---- /dev/null
-+++ b/arch/avr32/boards/atngw100/Kconfig
+diff --exclude=.git -urN linux-2.6.25.6/arch/arm/mach-at91/at91cap9_devices.c avr32-2.6/arch/arm/mach-at91/at91cap9_devices.c
+--- linux-2.6.25.6/arch/arm/mach-at91/at91cap9_devices.c 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/arm/mach-at91/at91cap9_devices.c 2008-06-12 15:09:38.603815938 +0200
+@@ -278,20 +278,25 @@
+ * -------------------------------------------------------------------- */
+
+ #if defined(CONFIG_MTD_NAND_AT91) || defined(CONFIG_MTD_NAND_AT91_MODULE)
+-static struct at91_nand_data nand_data;
++static struct atmel_nand_data nand_data;
+
+ #define NAND_BASE AT91_CHIPSELECT_3
+
+ static struct resource nand_resources[] = {
+- {
++ [0] = {
+ .start = NAND_BASE,
+ .end = NAND_BASE + SZ_256M - 1,
+ .flags = IORESOURCE_MEM,
++ },
++ [1] = {
++ .start = AT91_BASE_SYS + AT91_ECC,
++ .end = AT91_BASE_SYS + AT91_ECC + SZ_512 - 1,
++ .flags = IORESOURCE_MEM,
+ }
+ };
+
+ static struct platform_device at91cap9_nand_device = {
+- .name = "at91_nand",
++ .name = "atmel_nand",
+ .id = -1,
+ .dev = {
+ .platform_data = &nand_data,
+@@ -300,7 +305,7 @@
+ .num_resources = ARRAY_SIZE(nand_resources),
+ };
+
+-void __init at91_add_device_nand(struct at91_nand_data *data)
++void __init at91_add_device_nand(struct atmel_nand_data *data)
+ {
+ unsigned long csa, mode;
+
+@@ -341,7 +346,7 @@
+ platform_device_register(&at91cap9_nand_device);
+ }
+ #else
+-void __init at91_add_device_nand(struct at91_nand_data *data) {}
++void __init at91_add_device_nand(struct atmel_nand_data *data) {}
+ #endif
+
+ /* --------------------------------------------------------------------
+diff --exclude=.git -urN linux-2.6.25.6/arch/arm/mach-at91/at91rm9200_devices.c avr32-2.6/arch/arm/mach-at91/at91rm9200_devices.c
+--- linux-2.6.25.6/arch/arm/mach-at91/at91rm9200_devices.c 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/arm/mach-at91/at91rm9200_devices.c 2008-06-12 15:09:38.603815938 +0200
+@@ -369,7 +369,7 @@
+ * -------------------------------------------------------------------- */
+
+ #if defined(CONFIG_MTD_NAND_AT91) || defined(CONFIG_MTD_NAND_AT91_MODULE)
+-static struct at91_nand_data nand_data;
++static struct atmel_nand_data nand_data;
+
+ #define NAND_BASE AT91_CHIPSELECT_3
+
+@@ -382,7 +382,7 @@
+ };
+
+ static struct platform_device at91rm9200_nand_device = {
+- .name = "at91_nand",
++ .name = "atmel_nand",
+ .id = -1,
+ .dev = {
+ .platform_data = &nand_data,
+@@ -391,7 +391,7 @@
+ .num_resources = ARRAY_SIZE(nand_resources),
+ };
+
+-void __init at91_add_device_nand(struct at91_nand_data *data)
++void __init at91_add_device_nand(struct atmel_nand_data *data)
+ {
+ unsigned int csa;
+
+@@ -429,7 +429,7 @@
+ platform_device_register(&at91rm9200_nand_device);
+ }
+ #else
+-void __init at91_add_device_nand(struct at91_nand_data *data) {}
++void __init at91_add_device_nand(struct atmel_nand_data *data) {}
+ #endif
+
+
+diff --exclude=.git -urN linux-2.6.25.6/arch/arm/mach-at91/at91sam9260_devices.c avr32-2.6/arch/arm/mach-at91/at91sam9260_devices.c
+--- linux-2.6.25.6/arch/arm/mach-at91/at91sam9260_devices.c 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/arm/mach-at91/at91sam9260_devices.c 2008-06-12 15:09:38.603815938 +0200
+@@ -283,20 +283,25 @@
+ * -------------------------------------------------------------------- */
+
+ #if defined(CONFIG_MTD_NAND_AT91) || defined(CONFIG_MTD_NAND_AT91_MODULE)
+-static struct at91_nand_data nand_data;
++static struct atmel_nand_data nand_data;
+
+ #define NAND_BASE AT91_CHIPSELECT_3
+
+ static struct resource nand_resources[] = {
+- {
++ [0] = {
+ .start = NAND_BASE,
+ .end = NAND_BASE + SZ_256M - 1,
+ .flags = IORESOURCE_MEM,
++ },
++ [1] = {
++ .start = AT91_BASE_SYS + AT91_ECC,
++ .end = AT91_BASE_SYS + AT91_ECC + SZ_512 - 1,
++ .flags = IORESOURCE_MEM,
+ }
+ };
+
+ static struct platform_device at91sam9260_nand_device = {
+- .name = "at91_nand",
++ .name = "atmel_nand",
+ .id = -1,
+ .dev = {
+ .platform_data = &nand_data,
+@@ -305,7 +310,7 @@
+ .num_resources = ARRAY_SIZE(nand_resources),
+ };
+
+-void __init at91_add_device_nand(struct at91_nand_data *data)
++void __init at91_add_device_nand(struct atmel_nand_data *data)
+ {
+ unsigned long csa, mode;
+
+@@ -346,7 +351,7 @@
+ platform_device_register(&at91sam9260_nand_device);
+ }
+ #else
+-void __init at91_add_device_nand(struct at91_nand_data *data) {}
++void __init at91_add_device_nand(struct atmel_nand_data *data) {}
+ #endif
+
+
+diff --exclude=.git -urN linux-2.6.25.6/arch/arm/mach-at91/at91sam9261_devices.c avr32-2.6/arch/arm/mach-at91/at91sam9261_devices.c
+--- linux-2.6.25.6/arch/arm/mach-at91/at91sam9261_devices.c 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/arm/mach-at91/at91sam9261_devices.c 2008-06-12 15:09:38.607815889 +0200
+@@ -199,7 +199,7 @@
+ * -------------------------------------------------------------------- */
+
+ #if defined(CONFIG_MTD_NAND_AT91) || defined(CONFIG_MTD_NAND_AT91_MODULE)
+-static struct at91_nand_data nand_data;
++static struct atmel_nand_data nand_data;
+
+ #define NAND_BASE AT91_CHIPSELECT_3
+
+@@ -211,8 +211,8 @@
+ }
+ };
+
+-static struct platform_device at91_nand_device = {
+- .name = "at91_nand",
++static struct platform_device atmel_nand_device = {
++ .name = "atmel_nand",
+ .id = -1,
+ .dev = {
+ .platform_data = &nand_data,
+@@ -221,7 +221,7 @@
+ .num_resources = ARRAY_SIZE(nand_resources),
+ };
+
+-void __init at91_add_device_nand(struct at91_nand_data *data)
++void __init at91_add_device_nand(struct atmel_nand_data *data)
+ {
+ unsigned long csa, mode;
+
+@@ -262,11 +262,11 @@
+ at91_set_A_periph(AT91_PIN_PC1, 0); /* NANDWE */
+
+ nand_data = *data;
+- platform_device_register(&at91_nand_device);
++ platform_device_register(&atmel_nand_device);
+ }
+
+ #else
+-void __init at91_add_device_nand(struct at91_nand_data *data) {}
++void __init at91_add_device_nand(struct atmel_nand_data *data) {}
+ #endif
+
+
+@@ -539,6 +539,20 @@
+ at91_set_B_periph(AT91_PIN_PB28, 0); /* LCDD23 */
+ #endif
+
++#ifdef CONFIG_FB_INTSRAM
++ {
++ void __iomem *fb;
++ struct resource *fb_res = &lcdc_resources[2];
++ size_t fb_len = fb_res->end - fb_res->start + 1;
++
++ fb = ioremap_writecombine(fb_res->start, fb_len);
++ if (fb) {
++ memset(fb, 0, fb_len);
++ iounmap(fb, fb_len);
++ }
++ }
++#endif
++
+ lcdc_data = *data;
+ platform_device_register(&at91_lcdc_device);
+ }
+diff --exclude=.git -urN linux-2.6.25.6/arch/arm/mach-at91/at91sam9263_devices.c avr32-2.6/arch/arm/mach-at91/at91sam9263_devices.c
+--- linux-2.6.25.6/arch/arm/mach-at91/at91sam9263_devices.c 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/arm/mach-at91/at91sam9263_devices.c 2008-06-12 15:09:38.607815889 +0200
+@@ -353,20 +353,25 @@
+ * -------------------------------------------------------------------- */
+
+ #if defined(CONFIG_MTD_NAND_AT91) || defined(CONFIG_MTD_NAND_AT91_MODULE)
+-static struct at91_nand_data nand_data;
++static struct atmel_nand_data nand_data;
+
+ #define NAND_BASE AT91_CHIPSELECT_3
+
+ static struct resource nand_resources[] = {
+- {
++ [0] = {
+ .start = NAND_BASE,
+ .end = NAND_BASE + SZ_256M - 1,
+ .flags = IORESOURCE_MEM,
++ },
++ [1] = {
++ .start = AT91_BASE_SYS + AT91_ECC0,
++ .end = AT91_BASE_SYS + AT91_ECC0 + SZ_512 - 1,
++ .flags = IORESOURCE_MEM,
+ }
+ };
+
+ static struct platform_device at91sam9263_nand_device = {
+- .name = "at91_nand",
++ .name = "atmel_nand",
+ .id = -1,
+ .dev = {
+ .platform_data = &nand_data,
+@@ -375,7 +380,7 @@
+ .num_resources = ARRAY_SIZE(nand_resources),
+ };
+
+-void __init at91_add_device_nand(struct at91_nand_data *data)
++void __init at91_add_device_nand(struct atmel_nand_data *data)
+ {
+ unsigned long csa, mode;
+
+@@ -416,7 +421,7 @@
+ platform_device_register(&at91sam9263_nand_device);
+ }
+ #else
+-void __init at91_add_device_nand(struct at91_nand_data *data) {}
++void __init at91_add_device_nand(struct atmel_nand_data *data) {}
+ #endif
+
+
+diff --exclude=.git -urN linux-2.6.25.6/arch/arm/mach-at91/at91sam9rl_devices.c avr32-2.6/arch/arm/mach-at91/at91sam9rl_devices.c
+--- linux-2.6.25.6/arch/arm/mach-at91/at91sam9rl_devices.c 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/arm/mach-at91/at91sam9rl_devices.c 2008-06-12 15:09:38.607815889 +0200
+@@ -100,20 +100,25 @@
+ * -------------------------------------------------------------------- */
+
+ #if defined(CONFIG_MTD_NAND_AT91) || defined(CONFIG_MTD_NAND_AT91_MODULE)
+-static struct at91_nand_data nand_data;
++static struct atmel_nand_data nand_data;
+
+ #define NAND_BASE AT91_CHIPSELECT_3
+
+ static struct resource nand_resources[] = {
+- {
++ [0] = {
+ .start = NAND_BASE,
+ .end = NAND_BASE + SZ_256M - 1,
+ .flags = IORESOURCE_MEM,
++ },
++ [1] = {
++ .start = AT91_BASE_SYS + AT91_ECC,
++ .end = AT91_BASE_SYS + AT91_ECC + SZ_512 - 1,
++ .flags = IORESOURCE_MEM,
+ }
+ };
+
+-static struct platform_device at91_nand_device = {
+- .name = "at91_nand",
++static struct platform_device atmel_nand_device = {
++ .name = "atmel_nand",
+ .id = -1,
+ .dev = {
+ .platform_data = &nand_data,
+@@ -122,7 +127,7 @@
+ .num_resources = ARRAY_SIZE(nand_resources),
+ };
+
+-void __init at91_add_device_nand(struct at91_nand_data *data)
++void __init at91_add_device_nand(struct atmel_nand_data *data)
+ {
+ unsigned long csa;
+
+@@ -159,11 +164,11 @@
+ at91_set_A_periph(AT91_PIN_PB5, 0); /* NANDWE */
+
+ nand_data = *data;
+- platform_device_register(&at91_nand_device);
++ platform_device_register(&atmel_nand_device);
+ }
+
+ #else
+-void __init at91_add_device_nand(struct at91_nand_data *data) {}
++void __init at91_add_device_nand(struct atmel_nand_data *data) {}
+ #endif
+
+
+@@ -376,6 +381,20 @@
+ at91_set_B_periph(AT91_PIN_PC24, 0); /* LCDD22 */
+ at91_set_B_periph(AT91_PIN_PC25, 0); /* LCDD23 */
+
++#ifdef CONFIG_FB_INTSRAM
++ {
++ void __iomem *fb;
++ struct resource *fb_res = &lcdc_resources[2];
++ size_t fb_len = fb_res->end - fb_res->start + 1;
++
++ fb = ioremap_writecombine(fb_res->start, fb_len);
++ if (fb) {
++ memset(fb, 0, fb_len);
++ iounmap(fb, fb_len);
++ }
++ }
++#endif
++
+ lcdc_data = *data;
+ platform_device_register(&at91_lcdc_device);
+ }
+diff --exclude=.git -urN linux-2.6.25.6/arch/arm/mach-at91/board-cap9adk.c avr32-2.6/arch/arm/mach-at91/board-cap9adk.c
+--- linux-2.6.25.6/arch/arm/mach-at91/board-cap9adk.c 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/arm/mach-at91/board-cap9adk.c 2008-06-12 15:09:38.607815889 +0200
+@@ -175,7 +175,7 @@
+ return cap9adk_nand_partitions;
+ }
+
+-static struct at91_nand_data __initdata cap9adk_nand_data = {
++static struct atmel_nand_data __initdata cap9adk_nand_data = {
+ .ale = 21,
+ .cle = 22,
+ // .det_pin = ... not connected
+diff --exclude=.git -urN linux-2.6.25.6/arch/arm/mach-at91/board-dk.c avr32-2.6/arch/arm/mach-at91/board-dk.c
+--- linux-2.6.25.6/arch/arm/mach-at91/board-dk.c 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/arm/mach-at91/board-dk.c 2008-06-12 15:09:38.611815840 +0200
+@@ -151,7 +151,7 @@
+ return dk_nand_partition;
+ }
+
+-static struct at91_nand_data __initdata dk_nand_data = {
++static struct atmel_nand_data __initdata dk_nand_data = {
+ .ale = 22,
+ .cle = 21,
+ .det_pin = AT91_PIN_PB1,
+diff --exclude=.git -urN linux-2.6.25.6/arch/arm/mach-at91/board-kb9202.c avr32-2.6/arch/arm/mach-at91/board-kb9202.c
+--- linux-2.6.25.6/arch/arm/mach-at91/board-kb9202.c 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/arm/mach-at91/board-kb9202.c 2008-06-12 15:09:38.611815840 +0200
+@@ -102,7 +102,7 @@
+ return kb9202_nand_partition;
+ }
+
+-static struct at91_nand_data __initdata kb9202_nand_data = {
++static struct atmel_nand_data __initdata kb9202_nand_data = {
+ .ale = 22,
+ .cle = 21,
+ // .det_pin = ... not there
+diff --exclude=.git -urN linux-2.6.25.6/arch/arm/mach-at91/board-sam9260ek.c avr32-2.6/arch/arm/mach-at91/board-sam9260ek.c
+--- linux-2.6.25.6/arch/arm/mach-at91/board-sam9260ek.c 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/arm/mach-at91/board-sam9260ek.c 2008-06-12 15:09:38.611815840 +0200
+@@ -146,7 +146,7 @@
+ return ek_nand_partition;
+ }
+
+-static struct at91_nand_data __initdata ek_nand_data = {
++static struct atmel_nand_data __initdata ek_nand_data = {
+ .ale = 21,
+ .cle = 22,
+ // .det_pin = ... not connected
+diff --exclude=.git -urN linux-2.6.25.6/arch/arm/mach-at91/board-sam9261ek.c avr32-2.6/arch/arm/mach-at91/board-sam9261ek.c
+--- linux-2.6.25.6/arch/arm/mach-at91/board-sam9261ek.c 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/arm/mach-at91/board-sam9261ek.c 2008-06-12 15:09:38.611815840 +0200
+@@ -189,7 +189,7 @@
+ return ek_nand_partition;
+ }
+
+-static struct at91_nand_data __initdata ek_nand_data = {
++static struct atmel_nand_data __initdata ek_nand_data = {
+ .ale = 22,
+ .cle = 21,
+ // .det_pin = ... not connected
+diff --exclude=.git -urN linux-2.6.25.6/arch/arm/mach-at91/board-sam9263ek.c avr32-2.6/arch/arm/mach-at91/board-sam9263ek.c
+--- linux-2.6.25.6/arch/arm/mach-at91/board-sam9263ek.c 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/arm/mach-at91/board-sam9263ek.c 2008-06-12 15:09:38.611815840 +0200
+@@ -192,7 +192,7 @@
+ return ek_nand_partition;
+ }
+
+-static struct at91_nand_data __initdata ek_nand_data = {
++static struct atmel_nand_data __initdata ek_nand_data = {
+ .ale = 21,
+ .cle = 22,
+ // .det_pin = ... not connected
+diff --exclude=.git -urN linux-2.6.25.6/arch/arm/mach-at91/board-sam9rlek.c avr32-2.6/arch/arm/mach-at91/board-sam9rlek.c
+--- linux-2.6.25.6/arch/arm/mach-at91/board-sam9rlek.c 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/arm/mach-at91/board-sam9rlek.c 2008-06-12 15:09:38.611815840 +0200
+@@ -93,7 +93,7 @@
+ return ek_nand_partition;
+ }
+
+-static struct at91_nand_data __initdata ek_nand_data = {
++static struct atmel_nand_data __initdata ek_nand_data = {
+ .ale = 21,
+ .cle = 22,
+ // .det_pin = ... not connected
+diff --exclude=.git -urN linux-2.6.25.6/arch/avr32/boards/atngw100/Kconfig avr32-2.6/arch/avr32/boards/atngw100/Kconfig
+--- linux-2.6.25.6/arch/avr32/boards/atngw100/Kconfig 1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/arch/avr32/boards/atngw100/Kconfig 2008-06-12 15:09:38.711815728 +0200
@@ -0,0 +1,12 @@
+# NGW100 customization
+
+
+ Choose 'Y' here if you're having i2c-related problems and
+ want to rule out the i2c bus driver.
---- a/arch/avr32/boards/atngw100/setup.c
-+++ b/arch/avr32/boards/atngw100/setup.c
-@@ -20,7 +20,7 @@
- #include <asm/io.h>
- #include <asm/setup.h>
-
--#include <asm/arch/at32ap7000.h>
-+#include <asm/arch/at32ap700x.h>
- #include <asm/arch/board.h>
+diff --exclude=.git -urN linux-2.6.25.6/arch/avr32/boards/atngw100/setup.c avr32-2.6/arch/avr32/boards/atngw100/setup.c
+--- linux-2.6.25.6/arch/avr32/boards/atngw100/setup.c 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/avr32/boards/atngw100/setup.c 2008-06-12 15:09:38.711815728 +0200
+@@ -25,6 +25,13 @@
#include <asm/arch/init.h>
#include <asm/arch/portmux.h>
-@@ -37,11 +37,16 @@
+
++/* Oscillator frequencies. These are board-specific */
++unsigned long at32_board_osc_rates[3] = {
++ [0] = 32768, /* 32.768 kHz on RTC osc */
++ [1] = 20000000, /* 20 MHz on osc0 */
++ [2] = 12000000, /* 12 MHz on osc1 */
++};
++
+ /* Initialized by bootloader-specific startup code. */
+ struct tag *bootloader_tags __initdata;
+
+@@ -37,11 +44,16 @@
static struct spi_board_info spi0_board_info[] __initdata = {
{
.modalias = "mtd_dataflash",
/*
* The next two functions should go away as the boot loader is
* supposed to initialize the macb address registers with a valid
-@@ -124,6 +129,7 @@
+@@ -124,6 +136,7 @@
}
};
static struct i2c_gpio_platform_data i2c_gpio_data = {
.sda_pin = GPIO_PIN_PA(6),
.scl_pin = GPIO_PIN_PA(7),
-@@ -139,6 +145,7 @@
+@@ -139,6 +152,7 @@
.platform_data = &i2c_gpio_data,
},
};
static int __init atngw100_init(void)
{
-@@ -157,6 +164,7 @@
+@@ -157,6 +171,7 @@
set_hw_addr(at32_add_device_eth(1, ð_data[1]));
at32_add_device_spi(0, spi0_board_info, ARRAY_SIZE(spi0_board_info));
at32_add_device_usba(0, NULL);
for (i = 0; i < ARRAY_SIZE(ngw_leds); i++) {
-@@ -165,11 +173,15 @@
+@@ -165,11 +180,15 @@
}
platform_device_register(&ngw_gpio_leds);
return 0;
}
---- a/arch/avr32/boards/atstk1000/atstk1000.h
-+++ b/arch/avr32/boards/atstk1000/atstk1000.h
-@@ -12,4 +12,6 @@
+diff --exclude=.git -urN linux-2.6.25.6/arch/avr32/boards/atstk1000/atstk1002.c avr32-2.6/arch/avr32/boards/atstk1000/atstk1002.c
+--- linux-2.6.25.6/arch/avr32/boards/atstk1000/atstk1002.c 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/avr32/boards/atstk1000/atstk1002.c 2008-06-12 15:09:38.711815728 +0200
+@@ -1,7 +1,7 @@
+ /*
+- * ATSTK1002 daughterboard-specific init code
++ * ATSTK1002/ATSTK1006 daughterboard-specific init code
+ *
+- * Copyright (C) 2005-2006 Atmel Corporation
++ * Copyright (C) 2005-2007 Atmel Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+@@ -28,6 +28,80 @@
- extern struct atmel_lcdfb_info atstk1000_lcdc_data;
+ #include "atstk1000.h"
-+void atstk1000_setup_j2_leds(void);
++/* Oscillator frequencies. These are board specific */
++unsigned long at32_board_osc_rates[3] = {
++ [0] = 32768, /* 32.768 kHz on RTC osc */
++ [1] = 20000000, /* 20 MHz on osc0 */
++ [2] = 12000000, /* 12 MHz on osc1 */
++};
+
- #endif /* __ARCH_AVR32_BOARDS_ATSTK1000_ATSTK1000_H */
---- a/arch/avr32/boards/atstk1000/atstk1002.c
-+++ b/arch/avr32/boards/atstk1000/atstk1002.c
-@@ -11,7 +11,6 @@
- #include <linux/etherdevice.h>
- #include <linux/init.h>
- #include <linux/kernel.h>
--#include <linux/leds.h>
- #include <linux/platform_device.h>
- #include <linux/string.h>
- #include <linux/types.h>
-@@ -22,7 +21,7 @@
-
- #include <asm/io.h>
- #include <asm/setup.h>
--#include <asm/arch/at32ap7000.h>
-+#include <asm/arch/at32ap700x.h>
- #include <asm/arch/board.h>
- #include <asm/arch/init.h>
- #include <asm/arch/portmux.h>
-@@ -49,18 +48,16 @@
- },
- };
-
--#ifndef CONFIG_BOARD_ATSTK1002_SW1_CUSTOM
--#ifndef CONFIG_BOARD_ATSTK1002_SW3_CUSTOM
-+#ifdef CONFIG_BOARD_ATSTK1000_EXTDAC
- static struct at73c213_board_info at73c213_data = {
- .ssc_id = 0,
- .shortname = "AVR32 STK1000 external DAC",
- };
- #endif
--#endif
-
--#ifndef CONFIG_BOARD_ATSTK1002_SW1_CUSTOM
-+#ifndef CONFIG_BOARD_ATSTK100X_SW1_CUSTOM
- static struct spi_board_info spi0_board_info[] __initdata = {
--#ifndef CONFIG_BOARD_ATSTK1002_SW3_CUSTOM
-+#ifdef CONFIG_BOARD_ATSTK1000_EXTDAC
- {
- /* AT73C213 */
- .modalias = "at73c213",
-@@ -80,12 +77,25 @@
- };
- #endif
++/*
++ * The ATSTK1006 daughterboard is very similar to the ATSTK1002. Both
++ * have the AT32AP7000 chip on board; the difference is that the
++ * STK1006 has 128 MB SDRAM (the STK1002 uses the 8 MB SDRAM chip on
++ * the STK1000 motherboard) and 256 MB NAND flash (the STK1002 has
++ * none.)
++ *
++ * The RAM difference is handled by the boot loader, so the only
++ * difference we end up handling here is the NAND flash.
++ */
++#ifdef CONFIG_BOARD_ATSTK1006
++#include <linux/mtd/partitions.h>
++#include <asm/arch/smc.h>
++
++static struct smc_timing nand_timing __initdata = {
++ .ncs_read_setup = 0,
++ .nrd_setup = 10,
++ .ncs_write_setup = 0,
++ .nwe_setup = 10,
++
++ .ncs_read_pulse = 30,
++ .nrd_pulse = 15,
++ .ncs_write_pulse = 30,
++ .nwe_pulse = 15,
++
++ .read_cycle = 30,
++ .write_cycle = 30,
++
++ .ncs_read_recover = 0,
++ .nrd_recover = 15,
++ .ncs_write_recover = 0,
++ /* WE# high -> RE# low min 60 ns */
++ .nwe_recover = 50,
++};
++
++static struct smc_config nand_config __initdata = {
++ .bus_width = 1,
++ .nrd_controlled = 1,
++ .nwe_controlled = 1,
++ .nwait_mode = 0,
++ .byte_write = 0,
++ .tdf_cycles = 2,
++ .tdf_mode = 0,
++};
++
++static struct mtd_partition nand_partitions[] = {
++ {
++ .name = "main",
++ .offset = 0x00000000,
++ .size = MTDPART_SIZ_FULL,
++ },
++};
++
++static struct mtd_partition *nand_part_info(int size, int *num_partitions)
++{
++ *num_partitions = ARRAY_SIZE(nand_partitions);
++ return nand_partitions;
++}
++
++static struct atmel_nand_data atstk1006_nand_data __initdata = {
++ .cle = 21,
++ .ale = 22,
++ .rdy_pin = GPIO_PIN_PB(30),
++ .enable_pin = GPIO_PIN_PB(29),
++ .partition_info = nand_part_info,
++};
++#endif
--#ifdef CONFIG_BOARD_ATSTK1002_SPI1
-+#ifdef CONFIG_BOARD_ATSTK100X_SPI1
- static struct spi_board_info spi1_board_info[] __initdata = { {
- /* patch in custom entries here */
+ struct eth_addr {
+ u8 addr[6];
+@@ -83,6 +157,19 @@
} };
#endif
/*
* The next two functions should go away as the boot loader is
* supposed to initialize the macb address registers with a valid
-@@ -141,68 +151,8 @@
- clk_put(pclk);
- }
-
--#ifdef CONFIG_BOARD_ATSTK1002_J2_LED
--
--static struct gpio_led stk_j2_led[] = {
--#ifdef CONFIG_BOARD_ATSTK1002_J2_LED8
--#define LEDSTRING "J2 jumpered to LED8"
-- { .name = "led0:amber", .gpio = GPIO_PIN_PB( 8), },
-- { .name = "led1:amber", .gpio = GPIO_PIN_PB( 9), },
-- { .name = "led2:amber", .gpio = GPIO_PIN_PB(10), },
-- { .name = "led3:amber", .gpio = GPIO_PIN_PB(13), },
-- { .name = "led4:amber", .gpio = GPIO_PIN_PB(14), },
-- { .name = "led5:amber", .gpio = GPIO_PIN_PB(15), },
-- { .name = "led6:amber", .gpio = GPIO_PIN_PB(16), },
-- { .name = "led7:amber", .gpio = GPIO_PIN_PB(30),
-- .default_trigger = "heartbeat", },
--#else /* RGB */
--#define LEDSTRING "J2 jumpered to RGB LEDs"
-- { .name = "r1:red", .gpio = GPIO_PIN_PB( 8), },
-- { .name = "g1:green", .gpio = GPIO_PIN_PB(10), },
-- { .name = "b1:blue", .gpio = GPIO_PIN_PB(14), },
--
-- { .name = "r2:red", .gpio = GPIO_PIN_PB( 9),
-- .default_trigger = "heartbeat", },
-- { .name = "g2:green", .gpio = GPIO_PIN_PB(13), },
-- { .name = "b2:blue", .gpio = GPIO_PIN_PB(15),
-- .default_trigger = "heartbeat", },
-- /* PB16, PB30 unused */
--#endif
--};
--
--static struct gpio_led_platform_data stk_j2_led_data = {
-- .num_leds = ARRAY_SIZE(stk_j2_led),
-- .leds = stk_j2_led,
--};
--
--static struct platform_device stk_j2_led_dev = {
-- .name = "leds-gpio",
-- .id = 2, /* gpio block J2 */
-- .dev = {
-- .platform_data = &stk_j2_led_data,
-- },
--};
--
--static void setup_j2_leds(void)
--{
-- unsigned i;
--
-- for (i = 0; i < ARRAY_SIZE(stk_j2_led); i++)
-- at32_select_gpio(stk_j2_led[i].gpio, AT32_GPIOF_OUTPUT);
--
-- printk("STK1002: " LEDSTRING "\n");
-- platform_device_register(&stk_j2_led_dev);
--}
--
--#else
--static void setup_j2_leds(void)
--{
--}
--#endif
--
--#ifndef CONFIG_BOARD_ATSTK1002_SW1_CUSTOM
--#ifndef CONFIG_BOARD_ATSTK1002_SW3_CUSTOM
--static void __init at73c213_set_clk(struct at73c213_board_info *info)
-+#ifdef CONFIG_BOARD_ATSTK1000_EXTDAC
-+static void __init atstk1002_setup_extdac(void)
- {
- struct clk *gclk;
- struct clk *pll;
-@@ -220,7 +170,7 @@
- }
-
- at32_select_periph(GPIO_PIN_PA(30), GPIO_PERIPH_A, 0);
-- info->dac_clk = gclk;
-+ at73c213_data.dac_clk = gclk;
-
- err_set_clk:
- clk_put(pll);
-@@ -229,12 +179,16 @@
- err_gclk:
- return;
- }
--#endif
--#endif
-+#else
-+static void __init atstk1002_setup_extdac(void)
-+{
-+
-+}
-+#endif /* CONFIG_BOARD_ATSTK1000_EXTDAC */
-
- void __init setup_board(void)
- {
--#ifdef CONFIG_BOARD_ATSTK1002_SW2_CUSTOM
-+#ifdef CONFIG_BOARD_ATSTK100X_SW2_CUSTOM
- at32_map_usart(0, 1); /* USART 0/B: /dev/ttyS1, IRDA */
- #else
- at32_map_usart(1, 0); /* USART 1/A: /dev/ttyS0, DB9 */
-@@ -271,7 +225,7 @@
+@@ -212,6 +299,12 @@
at32_add_system_devices();
--#ifdef CONFIG_BOARD_ATSTK1002_SW2_CUSTOM
-+#ifdef CONFIG_BOARD_ATSTK100X_SW2_CUSTOM
++#ifdef CONFIG_BOARD_ATSTK1006
++ smc_set_timing(&nand_config, &nand_timing);
++ smc_set_configuration(3, &nand_config);
++ at32_add_device_nand(0, &atstk1006_nand_data);
++#endif
++
+ #ifdef CONFIG_BOARD_ATSTK100X_SW2_CUSTOM
at32_add_device_usart(1);
#else
- at32_add_device_usart(0);
-@@ -281,12 +235,16 @@
- #ifndef CONFIG_BOARD_ATSTK1002_SW6_CUSTOM
- set_hw_addr(at32_add_device_eth(0, ð_data[0]));
- #endif
--#ifndef CONFIG_BOARD_ATSTK1002_SW1_CUSTOM
-+#ifndef CONFIG_BOARD_ATSTK100X_SW1_CUSTOM
- at32_add_device_spi(0, spi0_board_info, ARRAY_SIZE(spi0_board_info));
- #endif
--#ifdef CONFIG_BOARD_ATSTK1002_SPI1
-+#ifdef CONFIG_BOARD_ATSTK100X_SPI1
+@@ -228,16 +321,30 @@
+ #ifdef CONFIG_BOARD_ATSTK100X_SPI1
at32_add_device_spi(1, spi1_board_info, ARRAY_SIZE(spi1_board_info));
#endif
+ at32_add_device_twi(0, NULL, 0);
#ifdef CONFIG_BOARD_ATSTK1002_SW5_CUSTOM
set_hw_addr(at32_add_device_eth(1, ð_data[1]));
#else
-@@ -294,18 +252,23 @@
- fbmem_start, fbmem_size);
+ at32_add_device_lcdc(0, &atstk1000_lcdc_data,
+- fbmem_start, fbmem_size);
++ fbmem_start, fbmem_size, 0);
#endif
at32_add_device_usba(0, NULL);
--#ifndef CONFIG_BOARD_ATSTK1002_SW3_CUSTOM
-- at32_add_device_ssc(0, ATMEL_SSC_TX);
+#ifdef CONFIG_BOARD_ATSTK100X_ENABLE_AC97
+ at32_add_device_ac97c(0);
+#else
+ at32_add_device_abdac(0);
- #endif
--
-- setup_j2_leds();
--
--#ifndef CONFIG_BOARD_ATSTK1002_SW3_CUSTOM
--#ifndef CONFIG_BOARD_ATSTK1002_SW1_CUSTOM
-- at73c213_set_clk(&at73c213_data);
-+#ifndef CONFIG_BOARD_ATSTK100X_SW3_CUSTOM
-+ at32_add_device_ssc(0, ATMEL_SSC_TX);
++#endif
+ #ifndef CONFIG_BOARD_ATSTK100X_SW3_CUSTOM
+ at32_add_device_ssc(0, ATMEL_SSC_TX);
#endif
+ at32_add_device_cf(0, 2, &cf0_data);
+#ifdef CONFIG_BOARD_ATSTK100X_ENABLE_PSIF
+ at32_add_device_psif(0);
+ at32_add_device_psif(1);
++#endif
+
+ atstk1000_setup_j2_leds();
+ atstk1002_setup_extdac();
+diff --exclude=.git -urN linux-2.6.25.6/arch/avr32/boards/atstk1000/atstk1003.c avr32-2.6/arch/avr32/boards/atstk1000/atstk1003.c
+--- linux-2.6.25.6/arch/avr32/boards/atstk1000/atstk1003.c 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/avr32/boards/atstk1000/atstk1003.c 2008-06-12 15:09:38.711815728 +0200
+@@ -27,6 +27,13 @@
+
+ #include "atstk1000.h"
+
++/* Oscillator frequencies. These are board specific */
++unsigned long at32_board_osc_rates[3] = {
++ [0] = 32768, /* 32.768 kHz on RTC osc */
++ [1] = 20000000, /* 20 MHz on osc0 */
++ [2] = 12000000, /* 12 MHz on osc1 */
++};
++
+ #ifdef CONFIG_BOARD_ATSTK1000_EXTDAC
+ static struct at73c213_board_info at73c213_data = {
+ .ssc_id = 0,
+@@ -59,6 +66,19 @@
+ } };
#endif
-+ atstk1000_setup_j2_leds();
-+ atstk1002_setup_extdac();
++static struct cf_platform_data __initdata cf0_data = {
++#ifdef CONFIG_BOARD_ATSTK1000_CF_HACKS
++ .detect_pin = CONFIG_BOARD_ATSTK1000_CF_DETECT_PIN,
++ .reset_pin = CONFIG_BOARD_ATSTK1000_CF_RESET_PIN,
++#else
++ .detect_pin = GPIO_PIN_NONE,
++ .reset_pin = GPIO_PIN_NONE,
++#endif
++ .vcc_pin = GPIO_PIN_NONE,
++ .ready_pin = GPIO_PIN_PB(27),
++ .cs = 4,
++};
+
- return 0;
- }
- postcore_initcall(atstk1002_init);
---- /dev/null
-+++ b/arch/avr32/boards/atstk1000/atstk1003.c
-@@ -0,0 +1,185 @@
-+/*
-+ * ATSTK1003 daughterboard-specific init code
-+ *
-+ * Copyright (C) 2007 Atmel Corporation
-+ *
-+ * This program is free software; you can redistribute it and/or modify
-+ * it under the terms of the GNU General Public License version 2 as
-+ * published by the Free Software Foundation.
-+ */
-+#include <linux/clk.h>
-+#include <linux/err.h>
-+#include <linux/init.h>
-+#include <linux/kernel.h>
-+#include <linux/platform_device.h>
-+#include <linux/string.h>
-+#include <linux/types.h>
-+
-+#include <linux/spi/at73c213.h>
-+#include <linux/spi/spi.h>
-+
-+#include <asm/setup.h>
-+
-+#include <asm/arch/at32ap700x.h>
-+#include <asm/arch/board.h>
-+#include <asm/arch/init.h>
-+#include <asm/arch/portmux.h>
-+
-+#include "atstk1000.h"
-+
-+#ifdef CONFIG_BOARD_ATSTK1000_EXTDAC
-+static struct at73c213_board_info at73c213_data = {
-+ .ssc_id = 0,
-+ .shortname = "AVR32 STK1000 external DAC",
-+};
-+#endif
-+
-+#ifndef CONFIG_BOARD_ATSTK100X_SW1_CUSTOM
-+static struct spi_board_info spi0_board_info[] __initdata = {
-+#ifdef CONFIG_BOARD_ATSTK1000_EXTDAC
-+ {
-+ /* AT73C213 */
-+ .modalias = "at73c213",
-+ .max_speed_hz = 200000,
-+ .chip_select = 0,
-+ .mode = SPI_MODE_1,
-+ .platform_data = &at73c213_data,
-+ },
-+#endif
-+ /*
-+ * We can control the LTV350QV LCD panel, but it isn't much
-+ * point since we don't have an LCD controller...
-+ */
-+};
-+#endif
-+
-+#ifdef CONFIG_BOARD_ATSTK100X_SPI1
-+static struct spi_board_info spi1_board_info[] __initdata = { {
-+ /* patch in custom entries here */
-+} };
-+#endif
-+
-+static struct cf_platform_data __initdata cf0_data = {
-+#ifdef CONFIG_BOARD_ATSTK1000_CF_HACKS
-+ .detect_pin = CONFIG_BOARD_ATSTK1000_CF_DETECT_PIN,
-+ .reset_pin = CONFIG_BOARD_ATSTK1000_CF_RESET_PIN,
-+#else
-+ .detect_pin = GPIO_PIN_NONE,
-+ .reset_pin = GPIO_PIN_NONE,
-+#endif
-+ .vcc_pin = GPIO_PIN_NONE,
-+ .ready_pin = GPIO_PIN_PB(27),
-+ .cs = 4,
-+};
-+
-+#ifdef CONFIG_BOARD_ATSTK1000_EXTDAC
-+static void __init atstk1003_setup_extdac(void)
-+{
-+ struct clk *gclk;
-+ struct clk *pll;
-+
-+ gclk = clk_get(NULL, "gclk0");
-+ if (IS_ERR(gclk))
-+ goto err_gclk;
-+ pll = clk_get(NULL, "pll0");
-+ if (IS_ERR(pll))
-+ goto err_pll;
-+
-+ if (clk_set_parent(gclk, pll)) {
-+ pr_debug("STK1000: failed to set pll0 as parent for DAC clock\n");
-+ goto err_set_clk;
-+ }
-+
-+ at32_select_periph(GPIO_PIN_PA(30), GPIO_PERIPH_A, 0);
-+ at73c213_data.dac_clk = gclk;
-+
-+err_set_clk:
-+ clk_put(pll);
-+err_pll:
-+ clk_put(gclk);
-+err_gclk:
-+ return;
-+}
-+#else
-+static void __init atstk1003_setup_extdac(void)
-+{
-+
-+}
-+#endif /* CONFIG_BOARD_ATSTK1000_EXTDAC */
-+
-+void __init setup_board(void)
-+{
-+#ifdef CONFIG_BOARD_ATSTK100X_SW2_CUSTOM
-+ at32_map_usart(0, 1); /* USART 0/B: /dev/ttyS1, IRDA */
-+#else
-+ at32_map_usart(1, 0); /* USART 1/A: /dev/ttyS0, DB9 */
-+#endif
-+ /* USART 2/unused: expansion connector */
-+ at32_map_usart(3, 2); /* USART 3/C: /dev/ttyS2, DB9 */
-+
-+ at32_setup_serial_console(0);
-+}
-+
-+static int __init atstk1003_init(void)
-+{
-+ /*
-+ * ATSTK1000 uses 32-bit SDRAM interface. Reserve the
-+ * SDRAM-specific pins so that nobody messes with them.
-+ */
-+ at32_reserve_pin(GPIO_PIN_PE(0)); /* DATA[16] */
-+ at32_reserve_pin(GPIO_PIN_PE(1)); /* DATA[17] */
-+ at32_reserve_pin(GPIO_PIN_PE(2)); /* DATA[18] */
-+ at32_reserve_pin(GPIO_PIN_PE(3)); /* DATA[19] */
-+ at32_reserve_pin(GPIO_PIN_PE(4)); /* DATA[20] */
-+ at32_reserve_pin(GPIO_PIN_PE(5)); /* DATA[21] */
-+ at32_reserve_pin(GPIO_PIN_PE(6)); /* DATA[22] */
-+ at32_reserve_pin(GPIO_PIN_PE(7)); /* DATA[23] */
-+ at32_reserve_pin(GPIO_PIN_PE(8)); /* DATA[24] */
-+ at32_reserve_pin(GPIO_PIN_PE(9)); /* DATA[25] */
-+ at32_reserve_pin(GPIO_PIN_PE(10)); /* DATA[26] */
-+ at32_reserve_pin(GPIO_PIN_PE(11)); /* DATA[27] */
-+ at32_reserve_pin(GPIO_PIN_PE(12)); /* DATA[28] */
-+ at32_reserve_pin(GPIO_PIN_PE(13)); /* DATA[29] */
-+ at32_reserve_pin(GPIO_PIN_PE(14)); /* DATA[30] */
-+ at32_reserve_pin(GPIO_PIN_PE(15)); /* DATA[31] */
-+ at32_reserve_pin(GPIO_PIN_PE(26)); /* SDCS */
-+
-+ at32_add_system_devices();
-+
-+#ifdef CONFIG_BOARD_ATSTK100X_SW2_CUSTOM
-+ at32_add_device_usart(1);
-+#else
-+ at32_add_device_usart(0);
-+#endif
-+ at32_add_device_usart(2);
-+
-+#ifndef CONFIG_BOARD_ATSTK100X_SW1_CUSTOM
-+ at32_add_device_spi(0, spi0_board_info, ARRAY_SIZE(spi0_board_info));
-+#endif
-+#ifdef CONFIG_BOARD_ATSTK100X_SPI1
-+ at32_add_device_spi(1, spi1_board_info, ARRAY_SIZE(spi1_board_info));
-+#endif
-+#ifndef CONFIG_BOARD_ATSTK100X_SW2_CUSTOM
+ #ifdef CONFIG_BOARD_ATSTK1000_EXTDAC
+ static void __init atstk1003_setup_extdac(void)
+ {
+@@ -147,12 +167,22 @@
+ at32_add_device_spi(1, spi1_board_info, ARRAY_SIZE(spi1_board_info));
+ #endif
+ #ifndef CONFIG_BOARD_ATSTK100X_SW2_CUSTOM
+- at32_add_device_mci(0);
+ at32_add_device_mci(0, NULL);
-+#endif
-+ at32_add_device_usba(0, NULL);
+ #endif
+ at32_add_device_usba(0, NULL);
+#ifdef CONFIG_BOARD_ATSTK100X_ENABLE_AC97
+ at32_add_device_ac97c(0);
+#else
+ at32_add_device_abdac(0);
+#endif
-+#ifndef CONFIG_BOARD_ATSTK100X_SW3_CUSTOM
-+ at32_add_device_ssc(0, ATMEL_SSC_TX);
-+#endif
+ #ifndef CONFIG_BOARD_ATSTK100X_SW3_CUSTOM
+ at32_add_device_ssc(0, ATMEL_SSC_TX);
+ #endif
+ at32_add_device_cf(0, 2, &cf0_data);
+#ifdef CONFIG_BOARD_ATSTK100X_ENABLE_PSIF
+ at32_add_device_psif(0);
+ at32_add_device_psif(1);
+#endif
-+
-+ atstk1000_setup_j2_leds();
-+ atstk1003_setup_extdac();
-+
-+ return 0;
-+}
-+postcore_initcall(atstk1003_init);
---- /dev/null
-+++ b/arch/avr32/boards/atstk1000/atstk1004.c
-@@ -0,0 +1,156 @@
-+/*
-+ * ATSTK1003 daughterboard-specific init code
-+ *
-+ * Copyright (C) 2007 Atmel Corporation
-+ *
-+ * This program is free software; you can redistribute it and/or modify
-+ * it under the terms of the GNU General Public License version 2 as
-+ * published by the Free Software Foundation.
-+ */
-+#include <linux/clk.h>
-+#include <linux/err.h>
-+#include <linux/init.h>
-+#include <linux/kernel.h>
-+#include <linux/platform_device.h>
-+#include <linux/string.h>
-+#include <linux/types.h>
-+
-+#include <linux/spi/at73c213.h>
-+#include <linux/spi/spi.h>
-+
-+#include <video/atmel_lcdc.h>
-+
-+#include <asm/setup.h>
-+
-+#include <asm/arch/at32ap700x.h>
-+#include <asm/arch/board.h>
-+#include <asm/arch/init.h>
-+#include <asm/arch/portmux.h>
-+
-+#include "atstk1000.h"
-+
-+#ifdef CONFIG_BOARD_ATSTK1000_EXTDAC
-+static struct at73c213_board_info at73c213_data = {
-+ .ssc_id = 0,
-+ .shortname = "AVR32 STK1000 external DAC",
-+};
-+#endif
-+
-+#ifndef CONFIG_BOARD_ATSTK100X_SW1_CUSTOM
-+static struct spi_board_info spi0_board_info[] __initdata = {
-+#ifdef CONFIG_BOARD_ATSTK1000_EXTDAC
-+ {
-+ /* AT73C213 */
-+ .modalias = "at73c213",
-+ .max_speed_hz = 200000,
-+ .chip_select = 0,
-+ .mode = SPI_MODE_1,
-+ .platform_data = &at73c213_data,
-+ },
-+#endif
-+ {
-+ /* QVGA display */
-+ .modalias = "ltv350qv",
-+ .max_speed_hz = 16000000,
-+ .chip_select = 1,
-+ .mode = SPI_MODE_3,
-+ },
+
+ atstk1000_setup_j2_leds();
+ atstk1003_setup_extdac();
+diff --exclude=.git -urN linux-2.6.25.6/arch/avr32/boards/atstk1000/atstk1004.c avr32-2.6/arch/avr32/boards/atstk1000/atstk1004.c
+--- linux-2.6.25.6/arch/avr32/boards/atstk1000/atstk1004.c 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/avr32/boards/atstk1000/atstk1004.c 2008-06-12 15:09:38.715815679 +0200
+@@ -29,6 +29,13 @@
+
+ #include "atstk1000.h"
+
++/* Oscillator frequencies. These are board specific */
++unsigned long at32_board_osc_rates[3] = {
++ [0] = 32768, /* 32.768 kHz on RTC osc */
++ [1] = 20000000, /* 20 MHz on osc0 */
++ [2] = 12000000, /* 12 MHz on osc1 */
+};
-+#endif
-+
-+#ifdef CONFIG_BOARD_ATSTK100X_SPI1
-+static struct spi_board_info spi1_board_info[] __initdata = { {
-+ /* patch in custom entries here */
-+} };
-+#endif
-+
-+#ifdef CONFIG_BOARD_ATSTK1000_EXTDAC
-+static void __init atstk1004_setup_extdac(void)
-+{
-+ struct clk *gclk;
-+ struct clk *pll;
-+
-+ gclk = clk_get(NULL, "gclk0");
-+ if (IS_ERR(gclk))
-+ goto err_gclk;
-+ pll = clk_get(NULL, "pll0");
-+ if (IS_ERR(pll))
-+ goto err_pll;
-+
-+ if (clk_set_parent(gclk, pll)) {
-+ pr_debug("STK1000: failed to set pll0 as parent for DAC clock\n");
-+ goto err_set_clk;
-+ }
-+
-+ at32_select_periph(GPIO_PIN_PA(30), GPIO_PERIPH_A, 0);
-+ at73c213_data.dac_clk = gclk;
-+
-+err_set_clk:
-+ clk_put(pll);
-+err_pll:
-+ clk_put(gclk);
-+err_gclk:
-+ return;
-+}
-+#else
-+static void __init atstk1004_setup_extdac(void)
-+{
-+
-+}
-+#endif /* CONFIG_BOARD_ATSTK1000_EXTDAC */
-+
-+void __init setup_board(void)
-+{
-+#ifdef CONFIG_BOARD_ATSTK100X_SW2_CUSTOM
-+ at32_map_usart(0, 1); /* USART 0/B: /dev/ttyS1, IRDA */
-+#else
-+ at32_map_usart(1, 0); /* USART 1/A: /dev/ttyS0, DB9 */
-+#endif
-+ /* USART 2/unused: expansion connector */
-+ at32_map_usart(3, 2); /* USART 3/C: /dev/ttyS2, DB9 */
-+
-+ at32_setup_serial_console(0);
-+}
-+
-+static int __init atstk1004_init(void)
-+{
-+ at32_add_system_devices();
-+
-+#ifdef CONFIG_BOARD_ATSTK100X_SW2_CUSTOM
-+ at32_add_device_usart(1);
-+#else
-+ at32_add_device_usart(0);
-+#endif
-+ at32_add_device_usart(2);
+
-+#ifndef CONFIG_BOARD_ATSTK100X_SW1_CUSTOM
-+ at32_add_device_spi(0, spi0_board_info, ARRAY_SIZE(spi0_board_info));
-+#endif
-+#ifdef CONFIG_BOARD_ATSTK100X_SPI1
-+ at32_add_device_spi(1, spi1_board_info, ARRAY_SIZE(spi1_board_info));
-+#endif
-+#ifndef CONFIG_BOARD_ATSTK100X_SW2_CUSTOM
+ #ifdef CONFIG_BOARD_ATSTK1000_EXTDAC
+ static struct at73c213_board_info at73c213_data = {
+ .ssc_id = 0,
+@@ -130,14 +137,23 @@
+ at32_add_device_spi(1, spi1_board_info, ARRAY_SIZE(spi1_board_info));
+ #endif
+ #ifndef CONFIG_BOARD_ATSTK100X_SW2_CUSTOM
+- at32_add_device_mci(0);
+ at32_add_device_mci(0, NULL);
-+#endif
-+ at32_add_device_lcdc(0, &atstk1000_lcdc_data,
-+ fbmem_start, fbmem_size);
-+ at32_add_device_usba(0, NULL);
+ #endif
+ at32_add_device_lcdc(0, &atstk1000_lcdc_data,
+- fbmem_start, fbmem_size);
++ fbmem_start, fbmem_size, 0);
+ at32_add_device_usba(0, NULL);
+#ifdef CONFIG_BOARD_ATSTK100X_ENABLE_AC97
+ at32_add_device_ac97c(0);
+#else
+ at32_add_device_abdac(0);
+#endif
-+#ifndef CONFIG_BOARD_ATSTK100X_SW3_CUSTOM
-+ at32_add_device_ssc(0, ATMEL_SSC_TX);
-+#endif
+ #ifndef CONFIG_BOARD_ATSTK100X_SW3_CUSTOM
+ at32_add_device_ssc(0, ATMEL_SSC_TX);
+ #endif
+#ifdef CONFIG_BOARD_ATSTK100X_ENABLE_PSIF
+ at32_add_device_psif(0);
+ at32_add_device_psif(1);
+#endif
-+
-+ atstk1000_setup_j2_leds();
-+ atstk1004_setup_extdac();
-+
-+ return 0;
-+}
-+postcore_initcall(atstk1004_init);
---- a/arch/avr32/boards/atstk1000/Kconfig
-+++ b/arch/avr32/boards/atstk1000/Kconfig
-@@ -1,34 +1,53 @@
- # STK1000 customization
--if BOARD_ATSTK1002
-+if BOARD_ATSTK1000
-
--config BOARD_ATSTK1002_CUSTOM
-- bool "Non-default STK-1002 jumper settings"
-+choice
-+ prompt "ATSTK1000 CPU daughterboard type"
-+ default BOARD_ATSTK1002
-+
-+config BOARD_ATSTK1002
-+ bool "ATSTK1002"
+ atstk1000_setup_j2_leds();
+ atstk1004_setup_extdac();
+diff --exclude=.git -urN linux-2.6.25.6/arch/avr32/boards/atstk1000/Kconfig avr32-2.6/arch/avr32/boards/atstk1000/Kconfig
+--- linux-2.6.25.6/arch/avr32/boards/atstk1000/Kconfig 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/avr32/boards/atstk1000/Kconfig 2008-06-12 15:09:38.711815728 +0200
+@@ -18,6 +18,10 @@
+ bool "ATSTK1004"
+ select CPU_AT32AP7002
+
++config BOARD_ATSTK1006
++ bool "ATSTK1006"
+ select CPU_AT32AP7000
+
-+config BOARD_ATSTK1003
-+ bool "ATSTK1003"
-+ select CPU_AT32AP7001
-+
-+config BOARD_ATSTK1004
-+ bool "ATSTK1004"
-+ select CPU_AT32AP7002
-+
-+endchoice
-+
-+
-+config BOARD_ATSTK100X_CUSTOM
-+ bool "Non-default STK1002/STK1003/STK1004 jumper settings"
- help
- You will normally leave the jumpers on the CPU card at their
- default settings. If you need to use certain peripherals,
- you will need to change some of those jumpers.
-
--if BOARD_ATSTK1002_CUSTOM
-+if BOARD_ATSTK100X_CUSTOM
-
--config BOARD_ATSTK1002_SW1_CUSTOM
-+config BOARD_ATSTK100X_SW1_CUSTOM
- bool "SW1: use SSC1 (not SPI0)"
- help
- This also prevents using the external DAC as an audio interface,
- and means you can't initialize the on-board QVGA display.
-
--config BOARD_ATSTK1002_SW2_CUSTOM
-+config BOARD_ATSTK100X_SW2_CUSTOM
- bool "SW2: use IRDA or TIMER0 (not UART-A, MMC/SD, and PS2-A)"
- help
- If you change this you'll want an updated boot loader putting
- the console on UART-C not UART-A.
-
--config BOARD_ATSTK1002_SW3_CUSTOM
-+config BOARD_ATSTK100X_SW3_CUSTOM
- bool "SW3: use TIMER1 (not SSC0 and GCLK)"
- help
- This also prevents using the external DAC as an audio interface.
-
--config BOARD_ATSTK1002_SW4_CUSTOM
-+config BOARD_ATSTK100X_SW4_CUSTOM
- bool "SW4: use ISI/Camera (not GPIOs, SPI1, and PS2-B)"
- help
- To use the camera interface you'll need a custom card (on the
-@@ -36,27 +55,29 @@
-
- config BOARD_ATSTK1002_SW5_CUSTOM
- bool "SW5: use MACB1 (not LCDC)"
-+ depends on BOARD_ATSTK1002
-
- config BOARD_ATSTK1002_SW6_CUSTOM
- bool "SW6: more GPIOs (not MACB0)"
-+ depends on BOARD_ATSTK1002
-
- endif # custom
-
--config BOARD_ATSTK1002_SPI1
-+config BOARD_ATSTK100X_SPI1
- bool "Configure SPI1 controller"
-- depends on !BOARD_ATSTK1002_SW4_CUSTOM
-+ depends on !BOARD_ATSTK100X_SW4_CUSTOM
- help
- All the signals for the second SPI controller are available on
- GPIO lines and accessed through the J1 jumper block. Say "y"
- here to configure that SPI controller.
-
--config BOARD_ATSTK1002_J2_LED
-+config BOARD_ATSTK1000_J2_LED
- bool
-- default BOARD_ATSTK1002_J2_LED8 || BOARD_ATSTK1002_J2_RGB
-+ default BOARD_ATSTK1000_J2_LED8 || BOARD_ATSTK1000_J2_RGB
-
- choice
- prompt "LEDs connected to J2:"
-- depends on LEDS_GPIO && !BOARD_ATSTK1002_SW4_CUSTOM
-+ depends on LEDS_GPIO && !BOARD_ATSTK100X_SW4_CUSTOM
- optional
- help
- Select this if you have jumpered the J2 jumper block to the
-@@ -64,16 +85,77 @@
- IDC cable. A default "heartbeat" trigger is provided, but
- you can of course override this.
-
--config BOARD_ATSTK1002_J2_LED8
-+config BOARD_ATSTK1000_J2_LED8
- bool "LED0..LED7"
- help
- Select this if J2 is jumpered to LED0..LED7 amber leds.
+ endchoice
--config BOARD_ATSTK1002_J2_RGB
-+config BOARD_ATSTK1000_J2_RGB
- bool "RGB leds"
- help
- Select this if J2 is jumpered to the RGB leds.
- endchoice
+@@ -102,4 +106,60 @@
+ depends on !BOARD_ATSTK100X_SW1_CUSTOM && !BOARD_ATSTK100X_SW3_CUSTOM
+ default y
--endif # stk 1002
-+config BOARD_ATSTK1000_EXTDAC
-+ bool
-+ depends on !BOARD_ATSTK100X_SW1_CUSTOM && !BOARD_ATSTK100X_SW3_CUSTOM
-+ default y
-+
+config BOARD_ATSTK100X_ENABLE_AC97
+ bool "Use AC97C instead of ABDAC"
+ help
+ Y if you have level convertion hardware or a PS/2 device capable of
+ operating on 3.3 volt.
+
-+endif # stk 1000
---- a/arch/avr32/boards/atstk1000/Makefile
-+++ b/arch/avr32/boards/atstk1000/Makefile
-@@ -1,2 +1,4 @@
- obj-y += setup.o flash.o
+ endif # stk 1000
+diff --exclude=.git -urN linux-2.6.25.6/arch/avr32/boards/atstk1000/Makefile avr32-2.6/arch/avr32/boards/atstk1000/Makefile
+--- linux-2.6.25.6/arch/avr32/boards/atstk1000/Makefile 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/avr32/boards/atstk1000/Makefile 2008-06-12 15:09:38.711815728 +0200
+@@ -2,3 +2,4 @@
obj-$(CONFIG_BOARD_ATSTK1002) += atstk1002.o
-+obj-$(CONFIG_BOARD_ATSTK1003) += atstk1003.o
-+obj-$(CONFIG_BOARD_ATSTK1004) += atstk1004.o
---- a/arch/avr32/boards/atstk1000/setup.c
-+++ b/arch/avr32/boards/atstk1000/setup.c
-@@ -10,13 +10,17 @@
- #include <linux/bootmem.h>
- #include <linux/fb.h>
- #include <linux/init.h>
-+#include <linux/platform_device.h>
- #include <linux/types.h>
- #include <linux/linkage.h>
-
- #include <video/atmel_lcdc.h>
-
- #include <asm/setup.h>
-+
-+#include <asm/arch/at32ap700x.h>
- #include <asm/arch/board.h>
-+#include <asm/arch/portmux.h>
-
- #include "atstk1000.h"
-
-@@ -61,3 +65,63 @@
- .default_monspecs = &atstk1000_default_monspecs,
- .guard_time = 2,
- };
-+
-+#ifdef CONFIG_BOARD_ATSTK1000_J2_LED
-+#include <linux/leds.h>
-+
-+static struct gpio_led stk1000_j2_led[] = {
-+#ifdef CONFIG_BOARD_ATSTK1000_J2_LED8
-+#define LEDSTRING "J2 jumpered to LED8"
-+ { .name = "led0:amber", .gpio = GPIO_PIN_PB( 8), },
-+ { .name = "led1:amber", .gpio = GPIO_PIN_PB( 9), },
-+ { .name = "led2:amber", .gpio = GPIO_PIN_PB(10), },
-+ { .name = "led3:amber", .gpio = GPIO_PIN_PB(13), },
-+ { .name = "led4:amber", .gpio = GPIO_PIN_PB(14), },
-+ { .name = "led5:amber", .gpio = GPIO_PIN_PB(15), },
-+ { .name = "led6:amber", .gpio = GPIO_PIN_PB(16), },
-+ { .name = "led7:amber", .gpio = GPIO_PIN_PB(30),
-+ .default_trigger = "heartbeat", },
-+#else /* RGB */
-+#define LEDSTRING "J2 jumpered to RGB LEDs"
-+ { .name = "r1:red", .gpio = GPIO_PIN_PB( 8), },
-+ { .name = "g1:green", .gpio = GPIO_PIN_PB(10), },
-+ { .name = "b1:blue", .gpio = GPIO_PIN_PB(14), },
-+
-+ { .name = "r2:red", .gpio = GPIO_PIN_PB( 9),
-+ .default_trigger = "heartbeat", },
-+ { .name = "g2:green", .gpio = GPIO_PIN_PB(13), },
-+ { .name = "b2:blue", .gpio = GPIO_PIN_PB(15),
-+ .default_trigger = "heartbeat", },
-+ /* PB16, PB30 unused */
-+#endif
-+};
-+
-+static struct gpio_led_platform_data stk1000_j2_led_data = {
-+ .num_leds = ARRAY_SIZE(stk1000_j2_led),
-+ .leds = stk1000_j2_led,
-+};
-+
-+static struct platform_device stk1000_j2_led_dev = {
-+ .name = "leds-gpio",
-+ .id = 2, /* gpio block J2 */
-+ .dev = {
-+ .platform_data = &stk1000_j2_led_data,
-+ },
-+};
-+
-+void __init atstk1000_setup_j2_leds(void)
-+{
-+ unsigned i;
-+
-+ for (i = 0; i < ARRAY_SIZE(stk1000_j2_led); i++)
-+ at32_select_gpio(stk1000_j2_led[i].gpio, AT32_GPIOF_OUTPUT);
-+
-+ printk("STK1000: " LEDSTRING "\n");
-+ platform_device_register(&stk1000_j2_led_dev);
-+}
-+#else /* CONFIG_BOARD_ATSTK1000_J2_LED */
-+void __init atstk1000_setup_j2_leds(void)
-+{
-+
-+}
-+#endif /* CONFIG_BOARD_ATSTK1000_J2_LED */
---- a/arch/avr32/configs/atngw100_defconfig
-+++ b/arch/avr32/configs/atngw100_defconfig
-@@ -1,46 +1,52 @@
+ obj-$(CONFIG_BOARD_ATSTK1003) += atstk1003.o
+ obj-$(CONFIG_BOARD_ATSTK1004) += atstk1004.o
++obj-$(CONFIG_BOARD_ATSTK1006) += atstk1002.o
+diff --exclude=.git -urN linux-2.6.25.6/arch/avr32/configs/atngw100_defconfig avr32-2.6/arch/avr32/configs/atngw100_defconfig
+--- linux-2.6.25.6/arch/avr32/configs/atngw100_defconfig 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/avr32/configs/atngw100_defconfig 2008-06-12 15:09:38.715815679 +0200
+@@ -1,7 +1,7 @@
#
# Automatically generated make config: don't edit
--# Linux kernel version: 2.6.22-rc5
--# Sat Jun 23 15:40:05 2007
-+# Linux kernel version: 2.6.24
-+# Thu Mar 6 12:49:54 2008
+-# Linux kernel version: 2.6.24-rc7
+-# Wed Jan 9 23:20:41 2008
++# Linux kernel version: 2.6.25.4
++# Wed Jun 11 15:23:36 2008
#
CONFIG_AVR32=y
CONFIG_GENERIC_GPIO=y
- CONFIG_GENERIC_HARDIRQS=y
-+CONFIG_STACKTRACE_SUPPORT=y
-+CONFIG_LOCKDEP_SUPPORT=y
-+CONFIG_TRACE_IRQFLAGS_SUPPORT=y
- CONFIG_HARDIRQS_SW_RESEND=y
+@@ -13,10 +13,10 @@
CONFIG_GENERIC_IRQ_PROBE=y
CONFIG_RWSEM_GENERIC_SPINLOCK=y
CONFIG_GENERIC_TIME=y
+CONFIG_GENERIC_CLOCKEVENTS=y
-+# CONFIG_RWSEM_XCHGADD_ALGORITHM is not set
+ # CONFIG_RWSEM_XCHGADD_ALGORITHM is not set
# CONFIG_ARCH_HAS_ILOG2_U32 is not set
# CONFIG_ARCH_HAS_ILOG2_U64 is not set
-+CONFIG_ARCH_SUPPORTS_OPROFILE=y
+-CONFIG_ARCH_SUPPORTS_OPROFILE=y
CONFIG_GENERIC_HWEIGHT=y
CONFIG_GENERIC_CALIBRATE_DELAY=y
CONFIG_GENERIC_BUG=y
- CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
-
- #
--# Code maturity level options
-+# General setup
- #
- CONFIG_EXPERIMENTAL=y
- CONFIG_BROKEN_ON_SMP=y
- CONFIG_INIT_ENV_ARG_LIMIT=32
--
--#
--# General setup
--#
- CONFIG_LOCALVERSION=""
- # CONFIG_LOCALVERSION_AUTO is not set
- CONFIG_SWAP=y
- CONFIG_SYSVIPC=y
--# CONFIG_IPC_NS is not set
- CONFIG_SYSVIPC_SYSCTL=y
- CONFIG_POSIX_MQUEUE=y
+@@ -37,17 +37,15 @@
CONFIG_BSD_PROCESS_ACCT=y
CONFIG_BSD_PROCESS_ACCT_V3=y
# CONFIG_TASKSTATS is not set
--# CONFIG_UTS_NS is not set
-+# CONFIG_USER_NS is not set
-+# CONFIG_PID_NS is not set
+-# CONFIG_USER_NS is not set
+-# CONFIG_PID_NS is not set
# CONFIG_AUDIT is not set
# CONFIG_IKCONFIG is not set
CONFIG_LOG_BUF_SHIFT=14
-+# CONFIG_CGROUPS is not set
-+CONFIG_FAIR_GROUP_SCHED=y
-+CONFIG_FAIR_USER_SCHED=y
-+# CONFIG_FAIR_CGROUP_SCHED is not set
+ # CONFIG_CGROUPS is not set
+-CONFIG_FAIR_GROUP_SCHED=y
+-CONFIG_FAIR_USER_SCHED=y
+-# CONFIG_FAIR_CGROUP_SCHED is not set
++# CONFIG_GROUP_SCHED is not set
CONFIG_SYSFS_DEPRECATED=y
++CONFIG_SYSFS_DEPRECATED_V2=y
# CONFIG_RELAY is not set
++# CONFIG_NAMESPACES is not set
CONFIG_BLK_DEV_INITRD=y
-@@ -61,35 +67,28 @@
+ CONFIG_INITRAMFS_SOURCE=""
+ CONFIG_CC_OPTIMIZE_FOR_SIZE=y
+@@ -61,11 +59,13 @@
+ CONFIG_PRINTK=y
+ CONFIG_BUG=y
+ CONFIG_ELF_CORE=y
++# CONFIG_COMPAT_BRK is not set
+ # CONFIG_BASE_FULL is not set
+ CONFIG_FUTEX=y
CONFIG_ANON_INODES=y
CONFIG_EPOLL=y
CONFIG_SIGNALFD=y
--CONFIG_TIMERFD=y
++CONFIG_TIMERFD=y
CONFIG_EVENTFD=y
CONFIG_SHMEM=y
CONFIG_VM_EVENT_COUNTERS=y
--# CONFIG_SLUB_DEBUG is not set
-+CONFIG_SLUB_DEBUG=y
+@@ -73,6 +73,14 @@
# CONFIG_SLAB is not set
CONFIG_SLUB=y
# CONFIG_SLOB is not set
-+CONFIG_SLABINFO=y
++CONFIG_PROFILING=y
++# CONFIG_MARKERS is not set
++CONFIG_OPROFILE=m
++CONFIG_HAVE_OPROFILE=y
++CONFIG_KPROBES=y
++CONFIG_HAVE_KPROBES=y
++# CONFIG_HAVE_KRETPROBES is not set
++CONFIG_PROC_PAGE_MONITOR=y
+ CONFIG_SLABINFO=y
CONFIG_RT_MUTEXES=y
# CONFIG_TINY_SHMEM is not set
- CONFIG_BASE_SMALL=1
--
--#
--# Loadable module support
--#
- CONFIG_MODULES=y
- CONFIG_MODULE_UNLOAD=y
- CONFIG_MODULE_FORCE_UNLOAD=y
- # CONFIG_MODVERSIONS is not set
- # CONFIG_MODULE_SRCVERSION_ALL is not set
- CONFIG_KMOD=y
--
--#
--# Block layer
--#
- CONFIG_BLOCK=y
- # CONFIG_LBD is not set
- # CONFIG_BLK_DEV_IO_TRACE is not set
- # CONFIG_LSF is not set
-+# CONFIG_BLK_DEV_BSG is not set
+@@ -101,10 +109,15 @@
+ CONFIG_DEFAULT_CFQ=y
+ # CONFIG_DEFAULT_NOOP is not set
+ CONFIG_DEFAULT_IOSCHED="cfq"
++CONFIG_CLASSIC_RCU=y
- #
- # IO Schedulers
-@@ -107,21 +106,28 @@
#
# System Type and features
#
CONFIG_SUBARCH_AVR32B=y
CONFIG_MMU=y
CONFIG_PERFORMANCE_COUNTERS=y
- CONFIG_PLATFORM_AT32AP=y
-+CONFIG_CPU_AT32AP700X=y
+@@ -113,6 +126,7 @@
CONFIG_CPU_AT32AP7000=y
# CONFIG_BOARD_ATSTK1000 is not set
CONFIG_BOARD_ATNGW100=y
CONFIG_LOADER_U_BOOT=y
#
- # Atmel AVR32 AP options
- #
--# CONFIG_AP7000_32_BIT_SMC is not set
--CONFIG_AP7000_16_BIT_SMC=y
--# CONFIG_AP7000_8_BIT_SMC is not set
-+# CONFIG_AP700X_32_BIT_SMC is not set
-+CONFIG_AP700X_16_BIT_SMC=y
-+# CONFIG_AP700X_8_BIT_SMC is not set
+@@ -121,6 +135,7 @@
+ # CONFIG_AP700X_32_BIT_SMC is not set
+ CONFIG_AP700X_16_BIT_SMC=y
+ # CONFIG_AP700X_8_BIT_SMC is not set
+CONFIG_GPIO_DEV=y
CONFIG_LOAD_ADDRESS=0x10000000
CONFIG_ENTRY_ADDRESS=0x90000000
CONFIG_PHYS_OFFSET=0x10000000
-@@ -141,10 +147,14 @@
- CONFIG_FLATMEM=y
- CONFIG_FLAT_NODE_MEM_MAP=y
- # CONFIG_SPARSEMEM_STATIC is not set
-+# CONFIG_SPARSEMEM_VMEMMAP_ENABLE is not set
- CONFIG_SPLIT_PTLOCK_CPUS=4
- # CONFIG_RESOURCES_64BIT is not set
+@@ -146,16 +161,26 @@
CONFIG_ZONE_DMA_FLAG=0
-+CONFIG_VIRT_TO_BUS=y
+ CONFIG_VIRT_TO_BUS=y
# CONFIG_OWNERSHIP_TRACE is not set
-+# CONFIG_NMI_DEBUGGING is not set
++CONFIG_NMI_DEBUGGING=y
+CONFIG_DW_DMAC=y
# CONFIG_HZ_100 is not set
CONFIG_HZ_250=y
# CONFIG_HZ_300 is not set
-@@ -153,13 +163,31 @@
+ # CONFIG_HZ_1000 is not set
+ CONFIG_HZ=250
++# CONFIG_SCHED_HRTICK is not set
CONFIG_CMDLINE=""
#
--# Bus options
-+# Power management options
- #
--# CONFIG_ARCH_SUPPORTS_MSI is not set
-
- #
--# PCCARD (PCMCIA/CardBus) support
-+# CPU Frequency scaling
-+#
-+CONFIG_CPU_FREQ=y
-+CONFIG_CPU_FREQ_TABLE=y
-+# CONFIG_CPU_FREQ_DEBUG is not set
-+# CONFIG_CPU_FREQ_STAT is not set
-+CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE=y
-+# CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE is not set
-+# CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND is not set
-+# CONFIG_CPU_FREQ_DEFAULT_GOV_CONSERVATIVE is not set
-+CONFIG_CPU_FREQ_GOV_PERFORMANCE=y
-+# CONFIG_CPU_FREQ_GOV_POWERSAVE is not set
-+CONFIG_CPU_FREQ_GOV_USERSPACE=y
-+CONFIG_CPU_FREQ_GOV_ONDEMAND=y
-+# CONFIG_CPU_FREQ_GOV_CONSERVATIVE is not set
-+CONFIG_CPU_FREQ_AT32AP=y
-+
-+#
-+# Bus options
+ # Power management options
#
-+# CONFIG_ARCH_SUPPORTS_MSI is not set
- # CONFIG_PCCARD is not set
++CONFIG_ARCH_SUSPEND_POSSIBLE=y
++CONFIG_PM=y
++# CONFIG_PM_LEGACY is not set
++# CONFIG_PM_DEBUG is not set
++CONFIG_PM_SLEEP=y
++CONFIG_SUSPEND=y
++CONFIG_SUSPEND_FREEZER=y
#
-@@ -213,6 +241,7 @@
- CONFIG_INET_XFRM_MODE_TRANSPORT=y
- CONFIG_INET_XFRM_MODE_TUNNEL=y
- CONFIG_INET_XFRM_MODE_BEET=y
-+# CONFIG_INET_LRO is not set
- CONFIG_INET_DIAG=y
- CONFIG_INET_TCP_DIAG=y
- # CONFIG_TCP_CONG_ADVANCED is not set
-@@ -240,6 +269,7 @@
+ # CPU Frequency scaling
+@@ -164,9 +189,9 @@
+ CONFIG_CPU_FREQ_TABLE=y
+ # CONFIG_CPU_FREQ_DEBUG is not set
+ # CONFIG_CPU_FREQ_STAT is not set
+-CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE=y
++# CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE is not set
+ # CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE is not set
+-# CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND is not set
++CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y
+ # CONFIG_CPU_FREQ_DEFAULT_GOV_CONSERVATIVE is not set
+ CONFIG_CPU_FREQ_GOV_PERFORMANCE=y
+ # CONFIG_CPU_FREQ_GOV_POWERSAVE is not set
+@@ -202,6 +227,7 @@
+ CONFIG_XFRM_USER=y
+ # CONFIG_XFRM_SUB_POLICY is not set
+ # CONFIG_XFRM_MIGRATE is not set
++# CONFIG_XFRM_STATISTICS is not set
+ CONFIG_NET_KEY=y
+ # CONFIG_NET_KEY_MIGRATE is not set
+ CONFIG_INET=y
+@@ -260,82 +286,33 @@
# CONFIG_NETWORK_SECMARK is not set
CONFIG_NETFILTER=y
# CONFIG_NETFILTER_DEBUG is not set
-+CONFIG_BRIDGE_NETFILTER=y
+-CONFIG_BRIDGE_NETFILTER=y
++# CONFIG_NETFILTER_ADVANCED is not set
#
# Core Netfilter Configuration
-@@ -252,6 +282,7 @@
- # CONFIG_NF_CONNTRACK_EVENTS is not set
- CONFIG_NF_CT_PROTO_GRE=m
- # CONFIG_NF_CT_PROTO_SCTP is not set
-+# CONFIG_NF_CT_PROTO_UDPLITE is not set
- CONFIG_NF_CONNTRACK_AMANDA=m
+ #
+-# CONFIG_NETFILTER_NETLINK is not set
+-CONFIG_NF_CONNTRACK_ENABLED=m
++CONFIG_NETFILTER_NETLINK=m
++CONFIG_NETFILTER_NETLINK_LOG=m
+ CONFIG_NF_CONNTRACK=m
+-CONFIG_NF_CT_ACCT=y
+-CONFIG_NF_CONNTRACK_MARK=y
+-# CONFIG_NF_CONNTRACK_EVENTS is not set
+-CONFIG_NF_CT_PROTO_GRE=m
+-# CONFIG_NF_CT_PROTO_SCTP is not set
+-# CONFIG_NF_CT_PROTO_UDPLITE is not set
+-CONFIG_NF_CONNTRACK_AMANDA=m
CONFIG_NF_CONNTRACK_FTP=m
- CONFIG_NF_CONNTRACK_H323=m
-@@ -269,9 +300,11 @@
- CONFIG_NETFILTER_XT_TARGET_NFQUEUE=m
+-CONFIG_NF_CONNTRACK_H323=m
+ CONFIG_NF_CONNTRACK_IRC=m
+-CONFIG_NF_CONNTRACK_NETBIOS_NS=m
+-CONFIG_NF_CONNTRACK_PPTP=m
+-CONFIG_NF_CONNTRACK_SANE=m
+ CONFIG_NF_CONNTRACK_SIP=m
+-CONFIG_NF_CONNTRACK_TFTP=m
++CONFIG_NF_CT_NETLINK=m
+ CONFIG_NETFILTER_XTABLES=y
+-CONFIG_NETFILTER_XT_TARGET_CLASSIFY=m
+-# CONFIG_NETFILTER_XT_TARGET_CONNMARK is not set
+-# CONFIG_NETFILTER_XT_TARGET_DSCP is not set
+ CONFIG_NETFILTER_XT_TARGET_MARK=m
+-CONFIG_NETFILTER_XT_TARGET_NFQUEUE=m
CONFIG_NETFILTER_XT_TARGET_NFLOG=m
- # CONFIG_NETFILTER_XT_TARGET_NOTRACK is not set
-+# CONFIG_NETFILTER_XT_TARGET_TRACE is not set
+-# CONFIG_NETFILTER_XT_TARGET_NOTRACK is not set
+-# CONFIG_NETFILTER_XT_TARGET_TRACE is not set
CONFIG_NETFILTER_XT_TARGET_TCPMSS=m
- CONFIG_NETFILTER_XT_MATCH_COMMENT=m
- CONFIG_NETFILTER_XT_MATCH_CONNBYTES=m
-+# CONFIG_NETFILTER_XT_MATCH_CONNLIMIT is not set
- CONFIG_NETFILTER_XT_MATCH_CONNMARK=m
+-CONFIG_NETFILTER_XT_MATCH_COMMENT=m
+-CONFIG_NETFILTER_XT_MATCH_CONNBYTES=m
+-# CONFIG_NETFILTER_XT_MATCH_CONNLIMIT is not set
+-CONFIG_NETFILTER_XT_MATCH_CONNMARK=m
CONFIG_NETFILTER_XT_MATCH_CONNTRACK=m
- # CONFIG_NETFILTER_XT_MATCH_DCCP is not set
-@@ -284,6 +317,7 @@
+-# CONFIG_NETFILTER_XT_MATCH_DCCP is not set
+-# CONFIG_NETFILTER_XT_MATCH_DSCP is not set
+-CONFIG_NETFILTER_XT_MATCH_ESP=m
+-CONFIG_NETFILTER_XT_MATCH_HELPER=m
+-CONFIG_NETFILTER_XT_MATCH_LENGTH=m
+-CONFIG_NETFILTER_XT_MATCH_LIMIT=m
+-CONFIG_NETFILTER_XT_MATCH_MAC=m
CONFIG_NETFILTER_XT_MATCH_MARK=m
CONFIG_NETFILTER_XT_MATCH_POLICY=m
- CONFIG_NETFILTER_XT_MATCH_MULTIPORT=m
-+# CONFIG_NETFILTER_XT_MATCH_PHYSDEV is not set
- CONFIG_NETFILTER_XT_MATCH_PKTTYPE=m
- CONFIG_NETFILTER_XT_MATCH_QUOTA=m
- CONFIG_NETFILTER_XT_MATCH_REALM=m
-@@ -292,6 +326,8 @@
- CONFIG_NETFILTER_XT_MATCH_STATISTIC=m
- CONFIG_NETFILTER_XT_MATCH_STRING=m
- CONFIG_NETFILTER_XT_MATCH_TCPMSS=m
-+# CONFIG_NETFILTER_XT_MATCH_TIME is not set
-+# CONFIG_NETFILTER_XT_MATCH_U32 is not set
- CONFIG_NETFILTER_XT_MATCH_HASHLIMIT=m
+-CONFIG_NETFILTER_XT_MATCH_MULTIPORT=m
+-# CONFIG_NETFILTER_XT_MATCH_PHYSDEV is not set
+-CONFIG_NETFILTER_XT_MATCH_PKTTYPE=m
+-CONFIG_NETFILTER_XT_MATCH_QUOTA=m
+-CONFIG_NETFILTER_XT_MATCH_REALM=m
+-# CONFIG_NETFILTER_XT_MATCH_SCTP is not set
+ CONFIG_NETFILTER_XT_MATCH_STATE=m
+-CONFIG_NETFILTER_XT_MATCH_STATISTIC=m
+-CONFIG_NETFILTER_XT_MATCH_STRING=m
+-CONFIG_NETFILTER_XT_MATCH_TCPMSS=m
+-# CONFIG_NETFILTER_XT_MATCH_TIME is not set
+-# CONFIG_NETFILTER_XT_MATCH_U32 is not set
+-CONFIG_NETFILTER_XT_MATCH_HASHLIMIT=m
+
+ #
+ # IP: Netfilter Configuration
+ #
+ CONFIG_NF_CONNTRACK_IPV4=m
+ CONFIG_NF_CONNTRACK_PROC_COMPAT=y
+-# CONFIG_IP_NF_QUEUE is not set
+ CONFIG_IP_NF_IPTABLES=m
+-CONFIG_IP_NF_MATCH_IPRANGE=m
+-CONFIG_IP_NF_MATCH_TOS=m
+-CONFIG_IP_NF_MATCH_RECENT=m
+-CONFIG_IP_NF_MATCH_ECN=m
+-CONFIG_IP_NF_MATCH_AH=m
+-CONFIG_IP_NF_MATCH_TTL=m
+-CONFIG_IP_NF_MATCH_OWNER=m
+-CONFIG_IP_NF_MATCH_ADDRTYPE=m
+ CONFIG_IP_NF_FILTER=m
+ CONFIG_IP_NF_TARGET_REJECT=m
+ CONFIG_IP_NF_TARGET_LOG=m
+@@ -343,54 +320,25 @@
+ CONFIG_NF_NAT=m
+ CONFIG_NF_NAT_NEEDED=y
+ CONFIG_IP_NF_TARGET_MASQUERADE=m
+-CONFIG_IP_NF_TARGET_REDIRECT=m
+-CONFIG_IP_NF_TARGET_NETMAP=m
+-CONFIG_IP_NF_TARGET_SAME=m
+-CONFIG_NF_NAT_SNMP_BASIC=m
+-CONFIG_NF_NAT_PROTO_GRE=m
+ CONFIG_NF_NAT_FTP=m
+ CONFIG_NF_NAT_IRC=m
+-CONFIG_NF_NAT_TFTP=m
+-CONFIG_NF_NAT_AMANDA=m
+-CONFIG_NF_NAT_PPTP=m
+-CONFIG_NF_NAT_H323=m
++# CONFIG_NF_NAT_TFTP is not set
++# CONFIG_NF_NAT_AMANDA is not set
++# CONFIG_NF_NAT_PPTP is not set
++# CONFIG_NF_NAT_H323 is not set
+ CONFIG_NF_NAT_SIP=m
+ CONFIG_IP_NF_MANGLE=m
+-CONFIG_IP_NF_TARGET_TOS=m
+-CONFIG_IP_NF_TARGET_ECN=m
+-CONFIG_IP_NF_TARGET_TTL=m
+-CONFIG_IP_NF_TARGET_CLUSTERIP=m
+-CONFIG_IP_NF_RAW=m
+-CONFIG_IP_NF_ARPTABLES=m
+-CONFIG_IP_NF_ARPFILTER=m
+-CONFIG_IP_NF_ARP_MANGLE=m
#
-@@ -359,13 +395,19 @@
+-# IPv6: Netfilter Configuration (EXPERIMENTAL)
++# IPv6: Netfilter Configuration
+ #
+ CONFIG_NF_CONNTRACK_IPV6=m
+-CONFIG_IP6_NF_QUEUE=m
+ CONFIG_IP6_NF_IPTABLES=m
+-CONFIG_IP6_NF_MATCH_RT=m
+-CONFIG_IP6_NF_MATCH_OPTS=m
+-CONFIG_IP6_NF_MATCH_FRAG=m
+-CONFIG_IP6_NF_MATCH_HL=m
+-CONFIG_IP6_NF_MATCH_OWNER=m
+ CONFIG_IP6_NF_MATCH_IPV6HEADER=m
+-CONFIG_IP6_NF_MATCH_AH=m
+-CONFIG_IP6_NF_MATCH_MH=m
+-CONFIG_IP6_NF_MATCH_EUI64=m
+ CONFIG_IP6_NF_FILTER=m
+ CONFIG_IP6_NF_TARGET_LOG=m
+ CONFIG_IP6_NF_TARGET_REJECT=m
CONFIG_IP6_NF_MANGLE=m
- CONFIG_IP6_NF_TARGET_HL=m
- CONFIG_IP6_NF_RAW=m
-+
-+#
-+# Bridge: Netfilter Configuration
-+#
-+# CONFIG_BRIDGE_NF_EBTABLES is not set
+-CONFIG_IP6_NF_TARGET_HL=m
+-CONFIG_IP6_NF_RAW=m
+-
+-#
+-# Bridge: Netfilter Configuration
+-#
+-# CONFIG_BRIDGE_NF_EBTABLES is not set
# CONFIG_IP_DCCP is not set
# CONFIG_IP_SCTP is not set
# CONFIG_TIPC is not set
- # CONFIG_ATM is not set
--# CONFIG_BRIDGE is not set
-+CONFIG_BRIDGE=m
- CONFIG_VLAN_8021Q=m
- # CONFIG_DECNET is not set
-+CONFIG_LLC=m
- # CONFIG_LLC2 is not set
- # CONFIG_IPX is not set
- # CONFIG_ATALK is not set
-@@ -373,10 +415,6 @@
- # CONFIG_LAPB is not set
+@@ -407,7 +355,6 @@
# CONFIG_ECONET is not set
# CONFIG_WAN_ROUTER is not set
--
--#
--# QoS and/or fair queueing
--#
# CONFIG_NET_SCHED is not set
- CONFIG_NET_CLS_ROUTE=y
+-CONFIG_NET_CLS_ROUTE=y
-@@ -384,6 +422,7 @@
- # Network testing
#
+ # Network testing
+@@ -415,6 +362,7 @@
# CONFIG_NET_PKTGEN is not set
-+# CONFIG_NET_TCPPROBE is not set
+ # CONFIG_NET_TCPPROBE is not set
# CONFIG_HAMRADIO is not set
++# CONFIG_CAN is not set
# CONFIG_IRDA is not set
# CONFIG_BT is not set
-@@ -397,6 +436,7 @@
- # CONFIG_MAC80211 is not set
- # CONFIG_IEEE80211 is not set
- # CONFIG_RFKILL is not set
-+# CONFIG_NET_9P is not set
-
- #
- # Device Drivers
-@@ -405,16 +445,13 @@
- #
- # Generic Driver Options
- #
-+CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug"
- CONFIG_STANDALONE=y
- # CONFIG_PREVENT_FIRMWARE_BUILD is not set
- # CONFIG_FW_LOADER is not set
- # CONFIG_DEBUG_DRIVER is not set
- # CONFIG_DEBUG_DEVRES is not set
- # CONFIG_SYS_HYPERVISOR is not set
--
--#
--# Connector - unified userspace <-> kernelspace linker
--#
- # CONFIG_CONNECTOR is not set
- CONFIG_MTD=y
- # CONFIG_MTD_DEBUG is not set
-@@ -434,6 +471,7 @@
- # CONFIG_INFTL is not set
- # CONFIG_RFD_FTL is not set
- # CONFIG_SSFDC is not set
-+# CONFIG_MTD_OOPS is not set
-
- #
- # RAM/ROM/Flash chip drivers
-@@ -493,20 +531,8 @@
- # UBI - Unsorted block images
- #
- # CONFIG_MTD_UBI is not set
--
--#
--# Parallel port support
--#
- # CONFIG_PARPORT is not set
--
--#
--# Plug and Play support
--#
--# CONFIG_PNPACPI is not set
--
--#
--# Block devices
--#
-+CONFIG_BLK_DEV=y
- # CONFIG_BLK_DEV_COW_COMMON is not set
- CONFIG_BLK_DEV_LOOP=m
- # CONFIG_BLK_DEV_CRYPTOLOOP is not set
-@@ -517,11 +543,13 @@
- CONFIG_BLK_DEV_RAM_BLOCKSIZE=1024
+ # CONFIG_AF_RXRPC is not set
+@@ -531,11 +479,18 @@
+ CONFIG_BLK_DEV_RAM=m
+ CONFIG_BLK_DEV_RAM_COUNT=16
+ CONFIG_BLK_DEV_RAM_SIZE=4096
+-CONFIG_BLK_DEV_RAM_BLOCKSIZE=1024
++# CONFIG_BLK_DEV_XIP is not set
# CONFIG_CDROM_PKTCDVD is not set
# CONFIG_ATA_OVER_ETH is not set
--
--#
--# Misc devices
--#
--# CONFIG_BLINK is not set
+-# CONFIG_MISC_DEVICES is not set
+-# CONFIG_IDE is not set
+CONFIG_MISC_DEVICES=y
+# CONFIG_ATMEL_PWM is not set
+CONFIG_ATMEL_TCLIB=y
+CONFIG_ATMEL_TCB_CLKSRC_BLOCK=0
+# CONFIG_EEPROM_93CX6 is not set
+# CONFIG_ATMEL_SSC is not set
- # CONFIG_IDE is not set
-
- #
-@@ -529,30 +557,42 @@
- #
- # CONFIG_RAID_ATTRS is not set
- # CONFIG_SCSI is not set
-+# CONFIG_SCSI_DMA is not set
- # CONFIG_SCSI_NETLINK is not set
- # CONFIG_ATA is not set
--
--#
--# Multi-device support (RAID and LVM)
--#
- # CONFIG_MD is not set
--
--#
--# Network device support
--#
- CONFIG_NETDEVICES=y
-+# CONFIG_NETDEVICES_MULTIQUEUE is not set
- # CONFIG_DUMMY is not set
- # CONFIG_BONDING is not set
-+# CONFIG_MACVLAN is not set
- # CONFIG_EQUALIZER is not set
- CONFIG_TUN=m
--# CONFIG_PHYLIB is not set
-+# CONFIG_VETH is not set
-+CONFIG_PHYLIB=y
++# CONFIG_ENCLOSURE_SERVICES is not set
++# CONFIG_HAVE_IDE is not set
#
--# Ethernet (10 or 100Mbit)
-+# MII PHY device drivers
- #
-+# CONFIG_MARVELL_PHY is not set
-+# CONFIG_DAVICOM_PHY is not set
-+# CONFIG_QSEMI_PHY is not set
-+# CONFIG_LXT_PHY is not set
-+# CONFIG_CICADA_PHY is not set
-+# CONFIG_VITESSE_PHY is not set
-+# CONFIG_SMSC_PHY is not set
-+# CONFIG_BROADCOM_PHY is not set
-+# CONFIG_ICPLUS_PHY is not set
-+# CONFIG_FIXED_PHY is not set
-+# CONFIG_MDIO_BITBANG is not set
+ # SCSI device support
+@@ -568,11 +523,13 @@
+ # CONFIG_SMSC_PHY is not set
+ # CONFIG_BROADCOM_PHY is not set
+ # CONFIG_ICPLUS_PHY is not set
++# CONFIG_REALTEK_PHY is not set
+ # CONFIG_FIXED_PHY is not set
+ # CONFIG_MDIO_BITBANG is not set
CONFIG_NET_ETHERNET=y
--CONFIG_MII=y
-+# CONFIG_MII is not set
+ # CONFIG_MII is not set
CONFIG_MACB=y
-+# CONFIG_IBM_NEW_EMAC_ZMII is not set
-+# CONFIG_IBM_NEW_EMAC_RGMII is not set
-+# CONFIG_IBM_NEW_EMAC_TAH is not set
-+# CONFIG_IBM_NEW_EMAC_EMAC4 is not set
-+# CONFIG_B44 is not set
- # CONFIG_NETDEV_1000 is not set
- # CONFIG_NETDEV_10000 is not set
-
-@@ -571,21 +611,14 @@
- CONFIG_PPP_BSDCOMP=m
- CONFIG_PPP_MPPE=m
- CONFIG_PPPOE=m
-+# CONFIG_PPPOL2TP is not set
++# CONFIG_ENC28J60 is not set
+ # CONFIG_IBM_NEW_EMAC_ZMII is not set
+ # CONFIG_IBM_NEW_EMAC_RGMII is not set
+ # CONFIG_IBM_NEW_EMAC_TAH is not set
+@@ -599,7 +556,6 @@
+ # CONFIG_PPPOL2TP is not set
# CONFIG_SLIP is not set
CONFIG_SLHC=m
- # CONFIG_SHAPER is not set
+-# CONFIG_SHAPER is not set
# CONFIG_NETCONSOLE is not set
# CONFIG_NETPOLL is not set
# CONFIG_NET_POLL_CONTROLLER is not set
--
--#
--# ISDN subsystem
--#
- # CONFIG_ISDN is not set
--
--#
--# Telephony Support
--#
- # CONFIG_PHONE is not set
-
- #
-@@ -615,28 +648,57 @@
+@@ -633,6 +589,7 @@
#
CONFIG_SERIAL_ATMEL=y
CONFIG_SERIAL_ATMEL_CONSOLE=y
# CONFIG_SERIAL_ATMEL_TTYAT is not set
CONFIG_SERIAL_CORE=y
CONFIG_SERIAL_CORE_CONSOLE=y
- CONFIG_UNIX98_PTYS=y
+@@ -640,8 +597,6 @@
# CONFIG_LEGACY_PTYS is not set
--
--#
--# IPMI
--#
# CONFIG_IPMI_HANDLER is not set
--# CONFIG_WATCHDOG is not set
# CONFIG_HW_RANDOM is not set
- # CONFIG_RTC is not set
- # CONFIG_GEN_RTC is not set
+-# CONFIG_RTC is not set
+-# CONFIG_GEN_RTC is not set
# CONFIG_R3964 is not set
# CONFIG_RAW_DRIVER is not set
--
--#
--# TPM devices
--#
# CONFIG_TCG_TPM is not set
--# CONFIG_I2C is not set
-+CONFIG_I2C=m
-+CONFIG_I2C_BOARDINFO=y
-+CONFIG_I2C_CHARDEV=m
-+
-+#
-+# I2C Algorithms
-+#
-+CONFIG_I2C_ALGOBIT=m
-+# CONFIG_I2C_ALGOPCF is not set
-+# CONFIG_I2C_ALGOPCA is not set
+@@ -659,6 +614,7 @@
+ #
+ # I2C Hardware Bus support
+ #
++CONFIG_I2C_ATMELTWI=m
+ CONFIG_I2C_GPIO=m
+ # CONFIG_I2C_OCORES is not set
+ # CONFIG_I2C_PARPORT_LIGHT is not set
+@@ -669,13 +625,12 @@
+ #
+ # Miscellaneous I2C Chip support
+ #
+-# CONFIG_SENSORS_DS1337 is not set
+-# CONFIG_SENSORS_DS1374 is not set
+ # CONFIG_DS1682 is not set
+ # CONFIG_SENSORS_EEPROM is not set
+ # CONFIG_SENSORS_PCF8574 is not set
+-# CONFIG_SENSORS_PCA9539 is not set
++# CONFIG_PCF8575 is not set
+ # CONFIG_SENSORS_PCF8591 is not set
++# CONFIG_TPS65010 is not set
+ # CONFIG_SENSORS_MAX6875 is not set
+ # CONFIG_SENSORS_TSL2550 is not set
+ # CONFIG_I2C_DEBUG_CORE is not set
+@@ -702,9 +657,27 @@
+ # CONFIG_SPI_AT25 is not set
+ CONFIG_SPI_SPIDEV=m
+ # CONFIG_SPI_TLE62X0 is not set
++CONFIG_HAVE_GPIO_LIB=y
+
+#
-+# I2C Hardware Bus support
++# GPIO Support
+#
-+CONFIG_I2C_ATMELTWI=m
-+CONFIG_I2C_GPIO=m
-+# CONFIG_I2C_OCORES is not set
-+# CONFIG_I2C_PARPORT_LIGHT is not set
-+# CONFIG_I2C_SIMTEC is not set
-+# CONFIG_I2C_TAOS_EVM is not set
-+# CONFIG_I2C_STUB is not set
++# CONFIG_DEBUG_GPIO is not set
+
+#
-+# Miscellaneous I2C Chip support
++# I2C GPIO expanders:
+#
-+# CONFIG_SENSORS_DS1337 is not set
-+# CONFIG_SENSORS_DS1374 is not set
-+# CONFIG_DS1682 is not set
-+# CONFIG_SENSORS_EEPROM is not set
-+# CONFIG_SENSORS_PCF8574 is not set
-+# CONFIG_SENSORS_PCA9539 is not set
-+# CONFIG_SENSORS_PCF8591 is not set
-+# CONFIG_SENSORS_MAX6875 is not set
-+# CONFIG_SENSORS_TSL2550 is not set
-+# CONFIG_I2C_DEBUG_CORE is not set
-+# CONFIG_I2C_DEBUG_ALGO is not set
-+# CONFIG_I2C_DEBUG_BUS is not set
-+# CONFIG_I2C_DEBUG_CHIP is not set
-
- #
- # SPI support
-@@ -655,13 +717,25 @@
- # SPI Protocol Masters
- #
- # CONFIG_SPI_AT25 is not set
--# CONFIG_SPI_SPIDEV is not set
-+CONFIG_SPI_SPIDEV=m
-+# CONFIG_SPI_TLE62X0 is not set
-+# CONFIG_W1 is not set
-+# CONFIG_POWER_SUPPLY is not set
-+# CONFIG_HWMON is not set
-+CONFIG_WATCHDOG=y
-+# CONFIG_WATCHDOG_NOWAYOUT is not set
-
- #
--# Dallas's 1-wire bus
-+# Watchdog Device Drivers
- #
--# CONFIG_W1 is not set
--# CONFIG_HWMON is not set
-+# CONFIG_SOFT_WATCHDOG is not set
-+CONFIG_AT32AP700X_WDT=y
++# CONFIG_GPIO_PCA953X is not set
++# CONFIG_GPIO_PCF857X is not set
+
+#
-+# Sonics Silicon Backplane
++# SPI GPIO expanders:
+#
-+CONFIG_SSB_POSSIBLE=y
-+# CONFIG_SSB is not set
-
- #
- # Multifunction device drivers
-@@ -678,23 +752,21 @@
- #
- # Graphics support
- #
-+# CONFIG_VGASTATE is not set
-+# CONFIG_VIDEO_OUTPUT_CONTROL is not set
-+# CONFIG_FB is not set
- # CONFIG_BACKLIGHT_LCD_SUPPORT is not set
-
- #
- # Display device support
- #
- # CONFIG_DISPLAY_SUPPORT is not set
--# CONFIG_VGASTATE is not set
--# CONFIG_FB is not set
++# CONFIG_GPIO_MCP23S08 is not set
+ # CONFIG_W1 is not set
+ # CONFIG_POWER_SUPPLY is not set
+ # CONFIG_HWMON is not set
++# CONFIG_THERMAL is not set
+ CONFIG_WATCHDOG=y
+ # CONFIG_WATCHDOG_NOWAYOUT is not set
+@@ -757,10 +730,6 @@
#
- # Sound
+ # NOTE: USB_STORAGE enables SCSI, and 'SCSI disk support'
#
- # CONFIG_SOUND is not set
-
-#
--# USB support
+-# USB Gadget Support
-#
-+CONFIG_USB_SUPPORT=y
- # CONFIG_USB_ARCH_HAS_HCD is not set
- # CONFIG_USB_ARCH_HAS_OHCI is not set
- # CONFIG_USB_ARCH_HAS_EHCI is not set
-@@ -706,12 +778,48 @@
+ CONFIG_USB_GADGET=y
+ # CONFIG_USB_GADGET_DEBUG is not set
+ # CONFIG_USB_GADGET_DEBUG_FILES is not set
+@@ -787,21 +756,24 @@
+ # CONFIG_USB_FILE_STORAGE_TEST is not set
+ CONFIG_USB_G_SERIAL=m
+ # CONFIG_USB_MIDI_GADGET is not set
+-CONFIG_MMC=m
++# CONFIG_USB_G_PRINTER is not set
++CONFIG_MMC=y
+ # CONFIG_MMC_DEBUG is not set
+ # CONFIG_MMC_UNSAFE_RESUME is not set
+
#
- # USB Gadget Support
+ # MMC/SD Card Drivers
#
--# CONFIG_USB_GADGET is not set
--# CONFIG_MMC is not set
-+CONFIG_USB_GADGET=y
-+# CONFIG_USB_GADGET_DEBUG is not set
-+# CONFIG_USB_GADGET_DEBUG_FILES is not set
-+CONFIG_USB_GADGET_SELECTED=y
-+# CONFIG_USB_GADGET_AMD5536UDC is not set
-+CONFIG_USB_GADGET_ATMEL_USBA=y
-+CONFIG_USB_ATMEL_USBA=y
-+# CONFIG_USB_GADGET_FSL_USB2 is not set
-+# CONFIG_USB_GADGET_NET2280 is not set
-+# CONFIG_USB_GADGET_PXA2XX is not set
-+# CONFIG_USB_GADGET_M66592 is not set
-+# CONFIG_USB_GADGET_GOKU is not set
-+# CONFIG_USB_GADGET_LH7A40X is not set
-+# CONFIG_USB_GADGET_OMAP is not set
-+# CONFIG_USB_GADGET_S3C2410 is not set
-+# CONFIG_USB_GADGET_AT91 is not set
-+# CONFIG_USB_GADGET_DUMMY_HCD is not set
-+CONFIG_USB_GADGET_DUALSPEED=y
-+CONFIG_USB_ZERO=m
-+CONFIG_USB_ETH=m
-+CONFIG_USB_ETH_RNDIS=y
-+CONFIG_USB_GADGETFS=m
-+CONFIG_USB_FILE_STORAGE=m
-+# CONFIG_USB_FILE_STORAGE_TEST is not set
-+CONFIG_USB_G_SERIAL=m
-+# CONFIG_USB_MIDI_GADGET is not set
-+CONFIG_MMC=y
-+# CONFIG_MMC_DEBUG is not set
-+# CONFIG_MMC_UNSAFE_RESUME is not set
-+
-+#
-+# MMC/SD Card Drivers
-+#
+-CONFIG_MMC_BLOCK=m
+CONFIG_MMC_BLOCK=y
-+# CONFIG_MMC_BLOCK_BOUNCE is not set
-+# CONFIG_SDIO_UART is not set
+ CONFIG_MMC_BLOCK_BOUNCE=y
+ # CONFIG_SDIO_UART is not set
#
--# LED devices
-+# MMC/SD Host Controller Drivers
+ # MMC/SD Host Controller Drivers
#
+CONFIG_MMC_ATMELMCI=y
-+CONFIG_MMC_SPI=m
+ CONFIG_MMC_SPI=m
++# CONFIG_MEMSTICK is not set
CONFIG_NEW_LEDS=y
CONFIG_LEDS_CLASS=y
-@@ -726,53 +834,71 @@
- CONFIG_LEDS_TRIGGERS=y
- CONFIG_LEDS_TRIGGER_TIMER=y
- CONFIG_LEDS_TRIGGER_HEARTBEAT=y
--
-+CONFIG_RTC_LIB=y
-+CONFIG_RTC_CLASS=y
-+CONFIG_RTC_HCTOSYS=y
-+CONFIG_RTC_HCTOSYS_DEVICE="rtc0"
-+# CONFIG_RTC_DEBUG is not set
+@@ -844,19 +816,22 @@
+ # CONFIG_RTC_DRV_PCF8563 is not set
+ # CONFIG_RTC_DRV_PCF8583 is not set
+ # CONFIG_RTC_DRV_M41T80 is not set
++# CONFIG_RTC_DRV_S35390A is not set
#
--# LED drivers
--#
--
--#
--# LED Triggers
--#
--
--#
--# InfiniBand support
-+# RTC interfaces
+ # SPI RTC drivers
#
-+CONFIG_RTC_INTF_SYSFS=y
-+CONFIG_RTC_INTF_PROC=y
-+CONFIG_RTC_INTF_DEV=y
-+# CONFIG_RTC_INTF_DEV_UIE_EMUL is not set
-+# CONFIG_RTC_DRV_TEST is not set
-
- #
--# EDAC - error detection and reporting (RAS) (EXPERIMENTAL)
-+# I2C RTC drivers
- #
-+# CONFIG_RTC_DRV_DS1307 is not set
-+# CONFIG_RTC_DRV_DS1374 is not set
-+# CONFIG_RTC_DRV_DS1672 is not set
-+# CONFIG_RTC_DRV_MAX6900 is not set
-+# CONFIG_RTC_DRV_RS5C372 is not set
-+# CONFIG_RTC_DRV_ISL1208 is not set
-+# CONFIG_RTC_DRV_X1205 is not set
-+# CONFIG_RTC_DRV_PCF8563 is not set
-+# CONFIG_RTC_DRV_PCF8583 is not set
-+# CONFIG_RTC_DRV_M41T80 is not set
-
- #
--# Real Time Clock
-+# SPI RTC drivers
- #
--# CONFIG_RTC_CLASS is not set
+-# CONFIG_RTC_DRV_RS5C348 is not set
+ # CONFIG_RTC_DRV_MAX6902 is not set
++# CONFIG_RTC_DRV_R9701 is not set
+# CONFIG_RTC_DRV_RS5C348 is not set
-+# CONFIG_RTC_DRV_MAX6902 is not set
#
--# DMA Engine support
-+# Platform RTC drivers
+ # Platform RTC drivers
#
--# CONFIG_DMA_ENGINE is not set
-+# CONFIG_RTC_DRV_DS1553 is not set
++# CONFIG_RTC_DRV_DS1511 is not set
+ # CONFIG_RTC_DRV_DS1553 is not set
+-# CONFIG_RTC_DRV_STK17TA8 is not set
+ # CONFIG_RTC_DRV_DS1742 is not set
+# CONFIG_RTC_DRV_STK17TA8 is not set
-+# CONFIG_RTC_DRV_DS1742 is not set
-+# CONFIG_RTC_DRV_M48T86 is not set
-+# CONFIG_RTC_DRV_M48T59 is not set
-+# CONFIG_RTC_DRV_V3020 is not set
-
- #
--# DMA Clients
-+# on-CPU RTC drivers
- #
-+CONFIG_RTC_DRV_AT32AP700X=y
-
- #
--# DMA Devices
-+# Userspace I/O
- #
-+# CONFIG_UIO is not set
-
+ # CONFIG_RTC_DRV_M48T86 is not set
+ # CONFIG_RTC_DRV_M48T59 is not set
+ # CONFIG_RTC_DRV_V3020 is not set
+@@ -874,25 +849,23 @@
#
# File systems
#
--CONFIG_EXT2_FS=y
-+CONFIG_EXT2_FS=m
+-CONFIG_EXT2_FS=m
++CONFIG_EXT2_FS=y
# CONFIG_EXT2_FS_XATTR is not set
# CONFIG_EXT2_FS_XIP is not set
--CONFIG_EXT3_FS=y
-+CONFIG_EXT3_FS=m
+-CONFIG_EXT3_FS=m
++CONFIG_EXT3_FS=y
# CONFIG_EXT3_FS_XATTR is not set
# CONFIG_EXT4DEV_FS is not set
--CONFIG_JBD=y
--# CONFIG_JBD_DEBUG is not set
-+CONFIG_JBD=m
+-CONFIG_JBD=m
++CONFIG_JBD=y
# CONFIG_REISERFS_FS is not set
# CONFIG_JFS_FS is not set
# CONFIG_FS_POSIX_ACL is not set
-@@ -781,7 +907,8 @@
+ # CONFIG_XFS_FS is not set
+ # CONFIG_GFS2_FS is not set
# CONFIG_OCFS2_FS is not set
- # CONFIG_MINIX_FS is not set
- # CONFIG_ROMFS_FS is not set
--# CONFIG_INOTIFY is not set
-+CONFIG_INOTIFY=y
-+CONFIG_INOTIFY_USER=y
+-# CONFIG_MINIX_FS is not set
+-# CONFIG_ROMFS_FS is not set
++# CONFIG_DNOTIFY is not set
+ CONFIG_INOTIFY=y
+ CONFIG_INOTIFY_USER=y
# CONFIG_QUOTA is not set
- # CONFIG_DNOTIFY is not set
+-# CONFIG_DNOTIFY is not set
# CONFIG_AUTOFS_FS is not set
-@@ -814,7 +941,6 @@
+ # CONFIG_AUTOFS4_FS is not set
+ CONFIG_FUSE_FS=m
+@@ -923,7 +896,7 @@
CONFIG_TMPFS=y
# CONFIG_TMPFS_POSIX_ACL is not set
# CONFIG_HUGETLB_PAGE is not set
--CONFIG_RAMFS=y
- CONFIG_CONFIGFS_FS=y
+-CONFIG_CONFIGFS_FS=m
++CONFIG_CONFIGFS_FS=y
#
-@@ -830,10 +956,12 @@
- CONFIG_JFFS2_FS=y
- CONFIG_JFFS2_FS_DEBUG=0
- CONFIG_JFFS2_FS_WRITEBUFFER=y
-+# CONFIG_JFFS2_FS_WBUF_VERIFY is not set
- # CONFIG_JFFS2_SUMMARY is not set
- # CONFIG_JFFS2_FS_XATTR is not set
- # CONFIG_JFFS2_COMPRESSION_OPTIONS is not set
- CONFIG_JFFS2_ZLIB=y
-+# CONFIG_JFFS2_LZO is not set
- CONFIG_JFFS2_RTIME=y
+ # Miscellaneous filesystems
+@@ -948,8 +921,10 @@
# CONFIG_JFFS2_RUBIN is not set
# CONFIG_CRAMFS is not set
-@@ -842,19 +970,21 @@
+ # CONFIG_VXFS_FS is not set
++# CONFIG_MINIX_FS is not set
+ # CONFIG_HPFS_FS is not set
# CONFIG_QNX4FS_FS is not set
++# CONFIG_ROMFS_FS is not set
# CONFIG_SYSV_FS is not set
# CONFIG_UFS_FS is not set
--
--#
--# Network File Systems
--#
-+CONFIG_NETWORK_FILESYSTEMS=y
- CONFIG_NFS_FS=y
- CONFIG_NFS_V3=y
- # CONFIG_NFS_V3_ACL is not set
- # CONFIG_NFS_V4 is not set
- # CONFIG_NFS_DIRECTIO is not set
--# CONFIG_NFSD is not set
-+CONFIG_NFSD=m
-+CONFIG_NFSD_V3=y
-+# CONFIG_NFSD_V3_ACL is not set
-+# CONFIG_NFSD_V4 is not set
-+CONFIG_NFSD_TCP=y
- CONFIG_ROOT_NFS=y
- CONFIG_LOCKD=y
- CONFIG_LOCKD_V4=y
-+CONFIG_EXPORTFS=m
- CONFIG_NFS_COMMON=y
- CONFIG_SUNRPC=y
- # CONFIG_SUNRPC_BIND34 is not set
-@@ -871,23 +1001,18 @@
- # CONFIG_NCP_FS is not set
- # CONFIG_CODA_FS is not set
- # CONFIG_AFS_FS is not set
--# CONFIG_9P_FS is not set
-
- #
- # Partition Types
- #
- # CONFIG_PARTITION_ADVANCED is not set
- CONFIG_MSDOS_PARTITION=y
--
--#
--# Native Language Support
--#
--CONFIG_NLS=y
-+CONFIG_NLS=m
- CONFIG_NLS_DEFAULT="iso8859-1"
--# CONFIG_NLS_CODEPAGE_437 is not set
-+CONFIG_NLS_CODEPAGE_437=m
- # CONFIG_NLS_CODEPAGE_737 is not set
- # CONFIG_NLS_CODEPAGE_775 is not set
--CONFIG_NLS_CODEPAGE_850=y
-+CONFIG_NLS_CODEPAGE_850=m
- # CONFIG_NLS_CODEPAGE_852 is not set
- # CONFIG_NLS_CODEPAGE_855 is not set
- # CONFIG_NLS_CODEPAGE_857 is not set
-@@ -908,7 +1033,7 @@
- # CONFIG_NLS_CODEPAGE_1250 is not set
- # CONFIG_NLS_CODEPAGE_1251 is not set
- # CONFIG_NLS_ASCII is not set
--CONFIG_NLS_ISO8859_1=y
-+CONFIG_NLS_ISO8859_1=m
- # CONFIG_NLS_ISO8859_2 is not set
- # CONFIG_NLS_ISO8859_3 is not set
- # CONFIG_NLS_ISO8859_4 is not set
-@@ -921,18 +1046,19 @@
- # CONFIG_NLS_ISO8859_15 is not set
- # CONFIG_NLS_KOI8_R is not set
+ CONFIG_NETWORK_FILESYSTEMS=y
+@@ -1030,11 +1005,6 @@
# CONFIG_NLS_KOI8_U is not set
--CONFIG_NLS_UTF8=y
--
--#
--# Distributed Lock Manager
--#
-+CONFIG_NLS_UTF8=m
+ CONFIG_NLS_UTF8=m
# CONFIG_DLM is not set
-+CONFIG_INSTRUMENTATION=y
-+CONFIG_PROFILING=y
-+CONFIG_OPROFILE=m
-+CONFIG_KPROBES=y
-+# CONFIG_MARKERS is not set
+-CONFIG_INSTRUMENTATION=y
+-CONFIG_PROFILING=y
+-CONFIG_OPROFILE=m
+-CONFIG_KPROBES=y
+-# CONFIG_MARKERS is not set
#
# Kernel hacking
- #
--CONFIG_TRACE_IRQFLAGS_SUPPORT=y
- # CONFIG_PRINTK_TIME is not set
-+CONFIG_ENABLE_WARN_DEPRECATED=y
- CONFIG_ENABLE_MUST_CHECK=y
- CONFIG_MAGIC_SYSRQ=y
- # CONFIG_UNUSED_SYMBOLS is not set
-@@ -941,12 +1067,17 @@
- CONFIG_DEBUG_KERNEL=y
- # CONFIG_DEBUG_SHIRQ is not set
- CONFIG_DETECT_SOFTLOCKUP=y
-+CONFIG_SCHED_DEBUG=y
+@@ -1053,6 +1023,7 @@
# CONFIG_SCHEDSTATS is not set
# CONFIG_TIMER_STATS is not set
-+# CONFIG_SLUB_DEBUG_ON is not set
+ # CONFIG_SLUB_DEBUG_ON is not set
++# CONFIG_SLUB_STATS is not set
# CONFIG_DEBUG_RT_MUTEXES is not set
# CONFIG_RT_MUTEX_TESTER is not set
# CONFIG_DEBUG_SPINLOCK is not set
- # CONFIG_DEBUG_MUTEXES is not set
-+# CONFIG_DEBUG_LOCK_ALLOC is not set
-+# CONFIG_PROVE_LOCKING is not set
-+# CONFIG_LOCK_STAT is not set
- # CONFIG_DEBUG_SPINLOCK_SLEEP is not set
- # CONFIG_DEBUG_LOCKING_API_SELFTESTS is not set
- # CONFIG_DEBUG_KOBJECT is not set
-@@ -954,21 +1085,21 @@
- # CONFIG_DEBUG_INFO is not set
- # CONFIG_DEBUG_VM is not set
+@@ -1069,9 +1040,10 @@
# CONFIG_DEBUG_LIST is not set
-+# CONFIG_DEBUG_SG is not set
+ # CONFIG_DEBUG_SG is not set
CONFIG_FRAME_POINTER=y
- # CONFIG_FORCED_INLINING is not set
-+# CONFIG_BOOT_PRINTK_DELAY is not set
+-# CONFIG_FORCED_INLINING is not set
+ # CONFIG_BOOT_PRINTK_DELAY is not set
# CONFIG_RCU_TORTURE_TEST is not set
-+# CONFIG_LKDTM is not set
++# CONFIG_KPROBES_SANITY_TEST is not set
++# CONFIG_BACKTRACE_SELF_TEST is not set
+ # CONFIG_LKDTM is not set
# CONFIG_FAULT_INJECTION is not set
--# CONFIG_KPROBES is not set
-+# CONFIG_SAMPLES is not set
-
- #
- # Security options
- #
- # CONFIG_KEYS is not set
- # CONFIG_SECURITY is not set
--
--#
--# Cryptographic options
--#
-+# CONFIG_SECURITY_FILE_CAPABILITIES is not set
+ # CONFIG_SAMPLES is not set
+@@ -1084,7 +1056,9 @@
+ # CONFIG_SECURITY_FILE_CAPABILITIES is not set
CONFIG_CRYPTO=y
CONFIG_CRYPTO_ALGAPI=y
++CONFIG_CRYPTO_AEAD=y
CONFIG_CRYPTO_BLKCIPHER=y
-@@ -989,6 +1120,7 @@
- CONFIG_CRYPTO_CBC=y
++# CONFIG_CRYPTO_SEQIV is not set
+ CONFIG_CRYPTO_HASH=y
+ CONFIG_CRYPTO_MANAGER=y
+ CONFIG_CRYPTO_HMAC=y
+@@ -1103,6 +1077,9 @@
CONFIG_CRYPTO_PCBC=m
# CONFIG_CRYPTO_LRW is not set
-+# CONFIG_CRYPTO_XTS is not set
+ # CONFIG_CRYPTO_XTS is not set
++# CONFIG_CRYPTO_CTR is not set
++# CONFIG_CRYPTO_GCM is not set
++# CONFIG_CRYPTO_CCM is not set
# CONFIG_CRYPTO_CRYPTD is not set
CONFIG_CRYPTO_DES=y
# CONFIG_CRYPTO_FCRYPT is not set
-@@ -1002,15 +1134,14 @@
- CONFIG_CRYPTO_ARC4=m
+@@ -1117,12 +1094,14 @@
# CONFIG_CRYPTO_KHAZAD is not set
# CONFIG_CRYPTO_ANUBIS is not set
-+# CONFIG_CRYPTO_SEED is not set
+ # CONFIG_CRYPTO_SEED is not set
++# CONFIG_CRYPTO_SALSA20 is not set
CONFIG_CRYPTO_DEFLATE=y
# CONFIG_CRYPTO_MICHAEL_MIC is not set
# CONFIG_CRYPTO_CRC32C is not set
# CONFIG_CRYPTO_CAMELLIA is not set
# CONFIG_CRYPTO_TEST is not set
--
--#
--# Hardware crypto devices
--#
-+# CONFIG_CRYPTO_AUTHENC is not set
-+CONFIG_CRYPTO_HW=y
+-# CONFIG_CRYPTO_AUTHENC is not set
++CONFIG_CRYPTO_AUTHENC=y
++# CONFIG_CRYPTO_LZO is not set
+ CONFIG_CRYPTO_HW=y
#
- # Library routines
-@@ -1018,8 +1149,9 @@
- CONFIG_BITREVERSE=y
- CONFIG_CRC_CCITT=m
- # CONFIG_CRC16 is not set
--# CONFIG_CRC_ITU_T is not set
-+CONFIG_CRC_ITU_T=m
- CONFIG_CRC32=y
-+CONFIG_CRC7=m
+@@ -1137,10 +1116,7 @@
# CONFIG_LIBCRC32C is not set
CONFIG_ZLIB_INFLATE=y
CONFIG_ZLIB_DEFLATE=y
---- a/arch/avr32/configs/atstk1002_defconfig
-+++ b/arch/avr32/configs/atstk1002_defconfig
-@@ -1,48 +1,49 @@
+-CONFIG_TEXTSEARCH=y
+-CONFIG_TEXTSEARCH_KMP=m
+-CONFIG_TEXTSEARCH_BM=m
+-CONFIG_TEXTSEARCH_FSM=m
++CONFIG_GENERIC_ALLOCATOR=y
+ CONFIG_PLIST=y
+ CONFIG_HAS_IOMEM=y
+ CONFIG_HAS_IOPORT=y
+diff --exclude=.git -urN linux-2.6.25.6/arch/avr32/configs/atstk1002_defconfig avr32-2.6/arch/avr32/configs/atstk1002_defconfig
+--- linux-2.6.25.6/arch/avr32/configs/atstk1002_defconfig 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/avr32/configs/atstk1002_defconfig 2008-06-12 15:09:38.715815679 +0200
+@@ -1,7 +1,7 @@
#
# Automatically generated make config: don't edit
--# Linux kernel version: 2.6.22-rc5
--# Sat Jun 23 15:32:08 2007
-+# Linux kernel version: 2.6.24
-+# Thu Mar 6 12:49:17 2008
+-# Linux kernel version: 2.6.24-rc7
+-# Wed Jan 9 23:07:43 2008
++# Linux kernel version: 2.6.25.4
++# Wed Jun 11 15:29:18 2008
#
CONFIG_AVR32=y
CONFIG_GENERIC_GPIO=y
- CONFIG_GENERIC_HARDIRQS=y
-+CONFIG_STACKTRACE_SUPPORT=y
-+CONFIG_LOCKDEP_SUPPORT=y
-+CONFIG_TRACE_IRQFLAGS_SUPPORT=y
- CONFIG_HARDIRQS_SW_RESEND=y
+@@ -13,10 +13,10 @@
CONFIG_GENERIC_IRQ_PROBE=y
CONFIG_RWSEM_GENERIC_SPINLOCK=y
CONFIG_GENERIC_TIME=y
+CONFIG_GENERIC_CLOCKEVENTS=y
-+# CONFIG_RWSEM_XCHGADD_ALGORITHM is not set
+ # CONFIG_RWSEM_XCHGADD_ALGORITHM is not set
# CONFIG_ARCH_HAS_ILOG2_U32 is not set
# CONFIG_ARCH_HAS_ILOG2_U64 is not set
-+CONFIG_ARCH_SUPPORTS_OPROFILE=y
+-CONFIG_ARCH_SUPPORTS_OPROFILE=y
CONFIG_GENERIC_HWEIGHT=y
CONFIG_GENERIC_CALIBRATE_DELAY=y
CONFIG_GENERIC_BUG=y
- CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
-
- #
--# Code maturity level options
-+# General setup
- #
- CONFIG_EXPERIMENTAL=y
- CONFIG_BROKEN_ON_SMP=y
- CONFIG_INIT_ENV_ARG_LIMIT=32
--
--#
--# General setup
--#
- CONFIG_LOCALVERSION=""
- # CONFIG_LOCALVERSION_AUTO is not set
- CONFIG_SWAP=y
- CONFIG_SYSVIPC=y
--# CONFIG_IPC_NS is not set
- CONFIG_SYSVIPC_SYSCTL=y
+@@ -36,15 +36,15 @@
CONFIG_POSIX_MQUEUE=y
--CONFIG_BSD_PROCESS_ACCT=y
--CONFIG_BSD_PROCESS_ACCT_V3=y
--CONFIG_TASKSTATS=y
--CONFIG_TASK_DELAY_ACCT=y
--# CONFIG_TASK_XACCT is not set
--# CONFIG_UTS_NS is not set
--CONFIG_AUDIT=y
-+# CONFIG_BSD_PROCESS_ACCT is not set
-+# CONFIG_TASKSTATS is not set
-+# CONFIG_USER_NS is not set
-+# CONFIG_PID_NS is not set
-+# CONFIG_AUDIT is not set
+ # CONFIG_BSD_PROCESS_ACCT is not set
+ # CONFIG_TASKSTATS is not set
+-# CONFIG_USER_NS is not set
+-# CONFIG_PID_NS is not set
+ # CONFIG_AUDIT is not set
# CONFIG_IKCONFIG is not set
CONFIG_LOG_BUF_SHIFT=14
-+# CONFIG_CGROUPS is not set
-+# CONFIG_FAIR_GROUP_SCHED is not set
+ # CONFIG_CGROUPS is not set
+-# CONFIG_FAIR_GROUP_SCHED is not set
++# CONFIG_GROUP_SCHED is not set
CONFIG_SYSFS_DEPRECATED=y
++CONFIG_SYSFS_DEPRECATED_V2=y
CONFIG_RELAY=y
++# CONFIG_NAMESPACES is not set
CONFIG_BLK_DEV_INITRD=y
-@@ -63,35 +64,28 @@
+ CONFIG_INITRAMFS_SOURCE=""
+ CONFIG_CC_OPTIMIZE_FOR_SIZE=y
+@@ -58,11 +58,13 @@
+ CONFIG_PRINTK=y
+ CONFIG_BUG=y
+ CONFIG_ELF_CORE=y
++# CONFIG_COMPAT_BRK is not set
+ # CONFIG_BASE_FULL is not set
+ CONFIG_FUTEX=y
CONFIG_ANON_INODES=y
CONFIG_EPOLL=y
CONFIG_SIGNALFD=y
--CONFIG_TIMERFD=y
++CONFIG_TIMERFD=y
CONFIG_EVENTFD=y
CONFIG_SHMEM=y
CONFIG_VM_EVENT_COUNTERS=y
--# CONFIG_SLUB_DEBUG is not set
-+CONFIG_SLUB_DEBUG=y
+@@ -70,6 +72,14 @@
# CONFIG_SLAB is not set
CONFIG_SLUB=y
# CONFIG_SLOB is not set
-+CONFIG_SLABINFO=y
++CONFIG_PROFILING=y
++# CONFIG_MARKERS is not set
++CONFIG_OPROFILE=m
++CONFIG_HAVE_OPROFILE=y
++CONFIG_KPROBES=y
++CONFIG_HAVE_KPROBES=y
++# CONFIG_HAVE_KRETPROBES is not set
++CONFIG_PROC_PAGE_MONITOR=y
+ CONFIG_SLABINFO=y
CONFIG_RT_MUTEXES=y
# CONFIG_TINY_SHMEM is not set
- CONFIG_BASE_SMALL=1
--
--#
--# Loadable module support
--#
- CONFIG_MODULES=y
- CONFIG_MODULE_UNLOAD=y
- # CONFIG_MODULE_FORCE_UNLOAD is not set
- # CONFIG_MODVERSIONS is not set
- # CONFIG_MODULE_SRCVERSION_ALL is not set
- # CONFIG_KMOD is not set
--
--#
--# Block layer
--#
- CONFIG_BLOCK=y
- # CONFIG_LBD is not set
- # CONFIG_BLK_DEV_IO_TRACE is not set
- # CONFIG_LSF is not set
-+# CONFIG_BLK_DEV_BSG is not set
-
- #
- # IO Schedulers
-@@ -99,32 +93,49 @@
- CONFIG_IOSCHED_NOOP=y
- # CONFIG_IOSCHED_AS is not set
- # CONFIG_IOSCHED_DEADLINE is not set
--# CONFIG_IOSCHED_CFQ is not set
-+CONFIG_IOSCHED_CFQ=y
- # CONFIG_DEFAULT_AS is not set
- # CONFIG_DEFAULT_DEADLINE is not set
--# CONFIG_DEFAULT_CFQ is not set
--CONFIG_DEFAULT_NOOP=y
--CONFIG_DEFAULT_IOSCHED="noop"
-+CONFIG_DEFAULT_CFQ=y
-+# CONFIG_DEFAULT_NOOP is not set
-+CONFIG_DEFAULT_IOSCHED="cfq"
+@@ -98,10 +108,15 @@
+ CONFIG_DEFAULT_CFQ=y
+ # CONFIG_DEFAULT_NOOP is not set
+ CONFIG_DEFAULT_IOSCHED="cfq"
++CONFIG_CLASSIC_RCU=y
#
# System Type and features
CONFIG_SUBARCH_AVR32B=y
CONFIG_MMU=y
CONFIG_PERFORMANCE_COUNTERS=y
- CONFIG_PLATFORM_AT32AP=y
-+CONFIG_CPU_AT32AP700X=y
- CONFIG_CPU_AT32AP7000=y
--CONFIG_BOARD_ATSTK1002=y
- CONFIG_BOARD_ATSTK1000=y
- # CONFIG_BOARD_ATNGW100 is not set
-+CONFIG_BOARD_ATSTK1002=y
-+# CONFIG_BOARD_ATSTK1003 is not set
-+# CONFIG_BOARD_ATSTK1004 is not set
-+# CONFIG_BOARD_ATSTK100X_CUSTOM is not set
-+# CONFIG_BOARD_ATSTK100X_SPI1 is not set
-+# CONFIG_BOARD_ATSTK1000_J2_LED is not set
-+# CONFIG_BOARD_ATSTK1000_J2_LED8 is not set
-+# CONFIG_BOARD_ATSTK1000_J2_RGB is not set
-+CONFIG_BOARD_ATSTK1000_EXTDAC=y
+@@ -113,12 +128,16 @@
+ CONFIG_BOARD_ATSTK1002=y
+ # CONFIG_BOARD_ATSTK1003 is not set
+ # CONFIG_BOARD_ATSTK1004 is not set
++# CONFIG_BOARD_ATSTK1006 is not set
+ # CONFIG_BOARD_ATSTK100X_CUSTOM is not set
+ # CONFIG_BOARD_ATSTK100X_SPI1 is not set
+ # CONFIG_BOARD_ATSTK1000_J2_LED is not set
+ # CONFIG_BOARD_ATSTK1000_J2_LED8 is not set
+ # CONFIG_BOARD_ATSTK1000_J2_RGB is not set
+ CONFIG_BOARD_ATSTK1000_EXTDAC=y
+# CONFIG_BOARD_ATSTK100X_ENABLE_AC97 is not set
+# CONFIG_BOARD_ATSTK1000_CF_HACKS is not set
+# CONFIG_BOARD_ATSTK100X_ENABLE_PSIF is not set
CONFIG_LOADER_U_BOOT=y
#
- # Atmel AVR32 AP options
- #
--# CONFIG_AP7000_32_BIT_SMC is not set
--CONFIG_AP7000_16_BIT_SMC=y
--# CONFIG_AP7000_8_BIT_SMC is not set
-+# CONFIG_AP700X_32_BIT_SMC is not set
-+CONFIG_AP700X_16_BIT_SMC=y
-+# CONFIG_AP700X_8_BIT_SMC is not set
+@@ -127,6 +146,7 @@
+ # CONFIG_AP700X_32_BIT_SMC is not set
+ CONFIG_AP700X_16_BIT_SMC=y
+ # CONFIG_AP700X_8_BIT_SMC is not set
+CONFIG_GPIO_DEV=y
CONFIG_LOAD_ADDRESS=0x10000000
CONFIG_ENTRY_ADDRESS=0x90000000
CONFIG_PHYS_OFFSET=0x10000000
-@@ -144,10 +155,14 @@
- CONFIG_FLATMEM=y
- CONFIG_FLAT_NODE_MEM_MAP=y
- # CONFIG_SPARSEMEM_STATIC is not set
-+# CONFIG_SPARSEMEM_VMEMMAP_ENABLE is not set
- CONFIG_SPLIT_PTLOCK_CPUS=4
- # CONFIG_RESOURCES_64BIT is not set
+@@ -152,16 +172,26 @@
CONFIG_ZONE_DMA_FLAG=0
-+CONFIG_VIRT_TO_BUS=y
+ CONFIG_VIRT_TO_BUS=y
# CONFIG_OWNERSHIP_TRACE is not set
+CONFIG_NMI_DEBUGGING=y
+CONFIG_DW_DMAC=y
# CONFIG_HZ_100 is not set
CONFIG_HZ_250=y
# CONFIG_HZ_300 is not set
-@@ -156,13 +171,31 @@
+ # CONFIG_HZ_1000 is not set
+ CONFIG_HZ=250
++# CONFIG_SCHED_HRTICK is not set
CONFIG_CMDLINE=""
#
--# Bus options
-+# Power management options
- #
--# CONFIG_ARCH_SUPPORTS_MSI is not set
-
- #
--# PCCARD (PCMCIA/CardBus) support
-+# CPU Frequency scaling
-+#
-+CONFIG_CPU_FREQ=y
-+CONFIG_CPU_FREQ_TABLE=y
-+# CONFIG_CPU_FREQ_DEBUG is not set
-+# CONFIG_CPU_FREQ_STAT is not set
-+CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE=y
-+# CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE is not set
-+# CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND is not set
-+# CONFIG_CPU_FREQ_DEFAULT_GOV_CONSERVATIVE is not set
-+CONFIG_CPU_FREQ_GOV_PERFORMANCE=y
-+# CONFIG_CPU_FREQ_GOV_POWERSAVE is not set
-+CONFIG_CPU_FREQ_GOV_USERSPACE=y
-+CONFIG_CPU_FREQ_GOV_ONDEMAND=y
-+# CONFIG_CPU_FREQ_GOV_CONSERVATIVE is not set
-+CONFIG_CPU_FREQ_AT32AP=y
-+
-+#
-+# Bus options
+ # Power management options
#
-+# CONFIG_ARCH_SUPPORTS_MSI is not set
- # CONFIG_PCCARD is not set
++CONFIG_ARCH_SUSPEND_POSSIBLE=y
++CONFIG_PM=y
++# CONFIG_PM_LEGACY is not set
++# CONFIG_PM_DEBUG is not set
++CONFIG_PM_SLEEP=y
++CONFIG_SUSPEND=y
++CONFIG_SUSPEND_FREEZER=y
#
-@@ -182,7 +215,12 @@
- CONFIG_PACKET=y
- CONFIG_PACKET_MMAP=y
- CONFIG_UNIX=y
--# CONFIG_NET_KEY is not set
-+CONFIG_XFRM=y
-+CONFIG_XFRM_USER=m
-+# CONFIG_XFRM_SUB_POLICY is not set
-+# CONFIG_XFRM_MIGRATE is not set
-+CONFIG_NET_KEY=m
-+# CONFIG_NET_KEY_MIGRATE is not set
+ # CPU Frequency scaling
+@@ -170,9 +200,9 @@
+ CONFIG_CPU_FREQ_TABLE=y
+ # CONFIG_CPU_FREQ_DEBUG is not set
+ # CONFIG_CPU_FREQ_STAT is not set
+-CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE=y
++# CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE is not set
+ # CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE is not set
+-# CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND is not set
++CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y
+ # CONFIG_CPU_FREQ_DEFAULT_GOV_CONSERVATIVE is not set
+ CONFIG_CPU_FREQ_GOV_PERFORMANCE=y
+ # CONFIG_CPU_FREQ_GOV_POWERSAVE is not set
+@@ -208,6 +238,7 @@
+ CONFIG_XFRM_USER=m
+ # CONFIG_XFRM_SUB_POLICY is not set
+ # CONFIG_XFRM_MIGRATE is not set
++# CONFIG_XFRM_STATISTICS is not set
+ CONFIG_NET_KEY=m
+ # CONFIG_NET_KEY_MIGRATE is not set
CONFIG_INET=y
- # CONFIG_IP_MULTICAST is not set
- # CONFIG_IP_ADVANCED_ROUTER is not set
-@@ -191,36 +229,52 @@
- CONFIG_IP_PNP_DHCP=y
- # CONFIG_IP_PNP_BOOTP is not set
- # CONFIG_IP_PNP_RARP is not set
--# CONFIG_NET_IPIP is not set
--# CONFIG_NET_IPGRE is not set
-+CONFIG_NET_IPIP=m
-+CONFIG_NET_IPGRE=m
- # CONFIG_ARPD is not set
- # CONFIG_SYN_COOKIES is not set
--# CONFIG_INET_AH is not set
--# CONFIG_INET_ESP is not set
-+CONFIG_INET_AH=m
-+CONFIG_INET_ESP=m
- # CONFIG_INET_IPCOMP is not set
- # CONFIG_INET_XFRM_TUNNEL is not set
--# CONFIG_INET_TUNNEL is not set
--# CONFIG_INET_XFRM_MODE_TRANSPORT is not set
--# CONFIG_INET_XFRM_MODE_TUNNEL is not set
--# CONFIG_INET_XFRM_MODE_BEET is not set
-+CONFIG_INET_TUNNEL=m
-+CONFIG_INET_XFRM_MODE_TRANSPORT=m
-+CONFIG_INET_XFRM_MODE_TUNNEL=m
-+CONFIG_INET_XFRM_MODE_BEET=m
-+# CONFIG_INET_LRO is not set
- CONFIG_INET_DIAG=y
- CONFIG_INET_TCP_DIAG=y
- # CONFIG_TCP_CONG_ADVANCED is not set
- CONFIG_TCP_CONG_CUBIC=y
- CONFIG_DEFAULT_TCP_CONG="cubic"
- # CONFIG_TCP_MD5SIG is not set
--# CONFIG_IPV6 is not set
--# CONFIG_INET6_XFRM_TUNNEL is not set
--# CONFIG_INET6_TUNNEL is not set
-+CONFIG_IPV6=m
-+# CONFIG_IPV6_PRIVACY is not set
-+# CONFIG_IPV6_ROUTER_PREF is not set
-+# CONFIG_IPV6_OPTIMISTIC_DAD is not set
-+CONFIG_INET6_AH=m
-+CONFIG_INET6_ESP=m
-+CONFIG_INET6_IPCOMP=m
-+# CONFIG_IPV6_MIP6 is not set
-+CONFIG_INET6_XFRM_TUNNEL=m
-+CONFIG_INET6_TUNNEL=m
-+CONFIG_INET6_XFRM_MODE_TRANSPORT=m
-+CONFIG_INET6_XFRM_MODE_TUNNEL=m
-+CONFIG_INET6_XFRM_MODE_BEET=m
-+# CONFIG_INET6_XFRM_MODE_ROUTEOPTIMIZATION is not set
-+CONFIG_IPV6_SIT=m
-+CONFIG_IPV6_TUNNEL=m
-+# CONFIG_IPV6_MULTIPLE_TABLES is not set
- # CONFIG_NETWORK_SECMARK is not set
- # CONFIG_NETFILTER is not set
- # CONFIG_IP_DCCP is not set
- # CONFIG_IP_SCTP is not set
- # CONFIG_TIPC is not set
- # CONFIG_ATM is not set
--# CONFIG_BRIDGE is not set
-+CONFIG_BRIDGE=m
- # CONFIG_VLAN_8021Q is not set
- # CONFIG_DECNET is not set
-+CONFIG_LLC=m
- # CONFIG_LLC2 is not set
- # CONFIG_IPX is not set
- # CONFIG_ATALK is not set
-@@ -228,16 +282,13 @@
- # CONFIG_LAPB is not set
- # CONFIG_ECONET is not set
- # CONFIG_WAN_ROUTER is not set
--
--#
--# QoS and/or fair queueing
--#
- # CONFIG_NET_SCHED is not set
-
- #
- # Network testing
- #
+@@ -279,6 +310,7 @@
# CONFIG_NET_PKTGEN is not set
-+# CONFIG_NET_TCPPROBE is not set
+ # CONFIG_NET_TCPPROBE is not set
# CONFIG_HAMRADIO is not set
++# CONFIG_CAN is not set
# CONFIG_IRDA is not set
# CONFIG_BT is not set
-@@ -251,6 +302,7 @@
- # CONFIG_MAC80211 is not set
- # CONFIG_IEEE80211 is not set
- # CONFIG_RFKILL is not set
-+# CONFIG_NET_9P is not set
+ # CONFIG_AF_RXRPC is not set
+@@ -395,13 +427,18 @@
+ CONFIG_BLK_DEV_RAM=m
+ CONFIG_BLK_DEV_RAM_COUNT=16
+ CONFIG_BLK_DEV_RAM_SIZE=4096
+-CONFIG_BLK_DEV_RAM_BLOCKSIZE=1024
++# CONFIG_BLK_DEV_XIP is not set
+ # CONFIG_CDROM_PKTCDVD is not set
+ # CONFIG_ATA_OVER_ETH is not set
+ CONFIG_MISC_DEVICES=y
++CONFIG_ATMEL_PWM=m
++CONFIG_ATMEL_TCLIB=y
++CONFIG_ATMEL_TCB_CLKSRC=y
++CONFIG_ATMEL_TCB_CLKSRC_BLOCK=0
+ # CONFIG_EEPROM_93CX6 is not set
+ CONFIG_ATMEL_SSC=m
+-# CONFIG_IDE is not set
++# CONFIG_ENCLOSURE_SERVICES is not set
++# CONFIG_HAVE_IDE is not set
#
- # Device Drivers
-@@ -259,16 +311,13 @@
+ # SCSI device support
+@@ -444,6 +481,7 @@
+ # CONFIG_SCSI_LOWLEVEL is not set
+ CONFIG_ATA=m
+ # CONFIG_ATA_NONSTANDARD is not set
++# CONFIG_SATA_MV is not set
+ CONFIG_PATA_AT32=m
+ # CONFIG_PATA_PLATFORM is not set
+ # CONFIG_MD is not set
+@@ -469,11 +507,13 @@
+ # CONFIG_SMSC_PHY is not set
+ # CONFIG_BROADCOM_PHY is not set
+ # CONFIG_ICPLUS_PHY is not set
++# CONFIG_REALTEK_PHY is not set
+ # CONFIG_FIXED_PHY is not set
+ # CONFIG_MDIO_BITBANG is not set
+ CONFIG_NET_ETHERNET=y
+ # CONFIG_MII is not set
+ CONFIG_MACB=y
++# CONFIG_ENC28J60 is not set
+ # CONFIG_IBM_NEW_EMAC_ZMII is not set
+ # CONFIG_IBM_NEW_EMAC_RGMII is not set
+ # CONFIG_IBM_NEW_EMAC_TAH is not set
+@@ -500,7 +540,6 @@
+ # CONFIG_PPPOL2TP is not set
+ # CONFIG_SLIP is not set
+ CONFIG_SLHC=m
+-# CONFIG_SHAPER is not set
+ # CONFIG_NETCONSOLE is not set
+ # CONFIG_NETPOLL is not set
+ # CONFIG_NET_POLL_CONTROLLER is not set
+@@ -568,6 +607,7 @@
#
- # Generic Driver Options
+ CONFIG_SERIAL_ATMEL=y
+ CONFIG_SERIAL_ATMEL_CONSOLE=y
++CONFIG_SERIAL_ATMEL_PDC=y
+ # CONFIG_SERIAL_ATMEL_TTYAT is not set
+ CONFIG_SERIAL_CORE=y
+ CONFIG_SERIAL_CORE_CONSOLE=y
+@@ -575,8 +615,6 @@
+ # CONFIG_LEGACY_PTYS is not set
+ # CONFIG_IPMI_HANDLER is not set
+ # CONFIG_HW_RANDOM is not set
+-# CONFIG_RTC is not set
+-# CONFIG_GEN_RTC is not set
+ # CONFIG_R3964 is not set
+ # CONFIG_RAW_DRIVER is not set
+ # CONFIG_TCG_TPM is not set
+@@ -594,6 +632,7 @@
#
-+CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug"
- CONFIG_STANDALONE=y
- # CONFIG_PREVENT_FIRMWARE_BUILD is not set
- # CONFIG_FW_LOADER is not set
- # CONFIG_DEBUG_DRIVER is not set
- # CONFIG_DEBUG_DEVRES is not set
- # CONFIG_SYS_HYPERVISOR is not set
--
--#
--# Connector - unified userspace <-> kernelspace linker
--#
- # CONFIG_CONNECTOR is not set
- CONFIG_MTD=y
- # CONFIG_MTD_DEBUG is not set
-@@ -288,6 +337,7 @@
- # CONFIG_INFTL is not set
- # CONFIG_RFD_FTL is not set
- # CONFIG_SSFDC is not set
-+# CONFIG_MTD_OOPS is not set
-
- #
- # RAM/ROM/Flash chip drivers
-@@ -327,6 +377,8 @@
+ # I2C Hardware Bus support
#
- # Self-contained MTD device drivers
++CONFIG_I2C_ATMELTWI=m
+ CONFIG_I2C_GPIO=m
+ # CONFIG_I2C_OCORES is not set
+ # CONFIG_I2C_PARPORT_LIGHT is not set
+@@ -604,13 +643,12 @@
#
-+CONFIG_MTD_DATAFLASH=m
-+CONFIG_MTD_M25P80=m
- # CONFIG_MTD_SLRAM is not set
- # CONFIG_MTD_PHRAM is not set
- # CONFIG_MTD_MTDRAM is not set
-@@ -345,20 +397,8 @@
- # UBI - Unsorted block images
+ # Miscellaneous I2C Chip support
#
- # CONFIG_MTD_UBI is not set
--
--#
--# Parallel port support
--#
- # CONFIG_PARPORT is not set
--
--#
--# Plug and Play support
--#
--# CONFIG_PNPACPI is not set
--
--#
--# Block devices
--#
-+CONFIG_BLK_DEV=y
- # CONFIG_BLK_DEV_COW_COMMON is not set
- CONFIG_BLK_DEV_LOOP=m
- # CONFIG_BLK_DEV_CRYPTOLOOP is not set
-@@ -369,42 +409,91 @@
- CONFIG_BLK_DEV_RAM_BLOCKSIZE=1024
- # CONFIG_CDROM_PKTCDVD is not set
- # CONFIG_ATA_OVER_ETH is not set
--
--#
--# Misc devices
--#
--# CONFIG_BLINK is not set
-+CONFIG_MISC_DEVICES=y
-+CONFIG_ATMEL_PWM=m
-+CONFIG_ATMEL_TCLIB=y
-+CONFIG_ATMEL_TCB_CLKSRC=y
-+CONFIG_ATMEL_TCB_CLKSRC_BLOCK=0
-+# CONFIG_EEPROM_93CX6 is not set
-+CONFIG_ATMEL_SSC=m
- # CONFIG_IDE is not set
+-# CONFIG_SENSORS_DS1337 is not set
+-# CONFIG_SENSORS_DS1374 is not set
+ # CONFIG_DS1682 is not set
+ # CONFIG_SENSORS_EEPROM is not set
+ # CONFIG_SENSORS_PCF8574 is not set
+-# CONFIG_SENSORS_PCA9539 is not set
++# CONFIG_PCF8575 is not set
+ # CONFIG_SENSORS_PCF8591 is not set
++# CONFIG_TPS65010 is not set
+ # CONFIG_SENSORS_MAX6875 is not set
+ # CONFIG_SENSORS_TSL2550 is not set
+ # CONFIG_I2C_DEBUG_CORE is not set
+@@ -637,9 +675,27 @@
+ # CONFIG_SPI_AT25 is not set
+ CONFIG_SPI_SPIDEV=m
+ # CONFIG_SPI_TLE62X0 is not set
++CONFIG_HAVE_GPIO_LIB=y
++
++#
++# GPIO Support
++#
++# CONFIG_DEBUG_GPIO is not set
++
++#
++# I2C GPIO expanders:
++#
++# CONFIG_GPIO_PCA953X is not set
++# CONFIG_GPIO_PCF857X is not set
++
++#
++# SPI GPIO expanders:
++#
++# CONFIG_GPIO_MCP23S08 is not set
+ # CONFIG_W1 is not set
+ # CONFIG_POWER_SUPPLY is not set
+ # CONFIG_HWMON is not set
++# CONFIG_THERMAL is not set
+ CONFIG_WATCHDOG=y
+ # CONFIG_WATCHDOG_NOWAYOUT is not set
+@@ -732,12 +788,18 @@
#
- # SCSI device support
+ # Generic devices
#
- # CONFIG_RAID_ATTRS is not set
--# CONFIG_SCSI is not set
-+CONFIG_SCSI=m
-+CONFIG_SCSI_DMA=y
-+# CONFIG_SCSI_TGT is not set
- # CONFIG_SCSI_NETLINK is not set
--# CONFIG_ATA is not set
-+# CONFIG_SCSI_PROC_FS is not set
++CONFIG_SND_AC97_CODEC=m
+ # CONFIG_SND_DUMMY is not set
+ # CONFIG_SND_MTPAV is not set
+ # CONFIG_SND_SERIAL_U16550 is not set
+ # CONFIG_SND_MPU401 is not set
#
--# Multi-device support (RAID and LVM)
-+# SCSI support type (disk, tape, CD-ROM)
- #
--# CONFIG_MD is not set
-+CONFIG_BLK_DEV_SD=m
-+# CONFIG_CHR_DEV_ST is not set
-+# CONFIG_CHR_DEV_OSST is not set
-+CONFIG_BLK_DEV_SR=m
-+# CONFIG_BLK_DEV_SR_VENDOR is not set
-+# CONFIG_CHR_DEV_SG is not set
-+# CONFIG_CHR_DEV_SCH is not set
-+
++# AVR32 devices
+#
-+# Some SCSI devices (e.g. CD jukebox) support multiple LUNs
++CONFIG_SND_ATMEL_AC97=m
++
+#
-+# CONFIG_SCSI_MULTI_LUN is not set
-+# CONFIG_SCSI_CONSTANTS is not set
-+# CONFIG_SCSI_LOGGING is not set
-+# CONFIG_SCSI_SCAN_ASYNC is not set
-+CONFIG_SCSI_WAIT_SCAN=m
-
+ # SPI devices
#
--# Network device support
-+# SCSI Transports
+ CONFIG_SND_AT73C213=m
+@@ -753,9 +815,14 @@
#
-+# CONFIG_SCSI_SPI_ATTRS is not set
-+# CONFIG_SCSI_FC_ATTRS is not set
-+# CONFIG_SCSI_ISCSI_ATTRS is not set
-+# CONFIG_SCSI_SAS_LIBSAS is not set
-+# CONFIG_SCSI_SRP_ATTRS is not set
-+# CONFIG_SCSI_LOWLEVEL is not set
-+CONFIG_ATA=m
-+# CONFIG_ATA_NONSTANDARD is not set
-+CONFIG_PATA_AT32=m
-+# CONFIG_PATA_PLATFORM is not set
-+# CONFIG_MD is not set
- CONFIG_NETDEVICES=y
--CONFIG_DUMMY=y
-+# CONFIG_NETDEVICES_MULTIQUEUE is not set
-+# CONFIG_DUMMY is not set
- # CONFIG_BONDING is not set
-+# CONFIG_MACVLAN is not set
- # CONFIG_EQUALIZER is not set
- CONFIG_TUN=m
--# CONFIG_PHYLIB is not set
-+# CONFIG_VETH is not set
-+CONFIG_PHYLIB=y
#
--# Ethernet (10 or 100Mbit)
-+# MII PHY device drivers
++# ALSA SoC audio for Freescale SOCs
++#
++
++#
+ # Open Sound System
+ #
+ # CONFIG_SOUND_PRIME is not set
++CONFIG_AC97_BUS=m
+ # CONFIG_HID_SUPPORT is not set
+ CONFIG_USB_SUPPORT=y
+ # CONFIG_USB_ARCH_HAS_HCD is not set
+@@ -765,10 +832,6 @@
+ #
+ # NOTE: USB_STORAGE enables SCSI, and 'SCSI disk support'
#
-+# CONFIG_MARVELL_PHY is not set
-+# CONFIG_DAVICOM_PHY is not set
-+# CONFIG_QSEMI_PHY is not set
-+# CONFIG_LXT_PHY is not set
-+# CONFIG_CICADA_PHY is not set
-+# CONFIG_VITESSE_PHY is not set
-+# CONFIG_SMSC_PHY is not set
-+# CONFIG_BROADCOM_PHY is not set
-+# CONFIG_ICPLUS_PHY is not set
-+# CONFIG_FIXED_PHY is not set
-+# CONFIG_MDIO_BITBANG is not set
- CONFIG_NET_ETHERNET=y
--CONFIG_MII=y
-+# CONFIG_MII is not set
- CONFIG_MACB=y
-+# CONFIG_IBM_NEW_EMAC_ZMII is not set
-+# CONFIG_IBM_NEW_EMAC_RGMII is not set
-+# CONFIG_IBM_NEW_EMAC_TAH is not set
-+# CONFIG_IBM_NEW_EMAC_EMAC4 is not set
-+# CONFIG_B44 is not set
- # CONFIG_NETDEV_1000 is not set
- # CONFIG_NETDEV_10000 is not set
-
-@@ -423,27 +512,54 @@
- CONFIG_PPP_BSDCOMP=m
- # CONFIG_PPP_MPPE is not set
- # CONFIG_PPPOE is not set
-+# CONFIG_PPPOL2TP is not set
- # CONFIG_SLIP is not set
- CONFIG_SLHC=m
- # CONFIG_SHAPER is not set
- # CONFIG_NETCONSOLE is not set
- # CONFIG_NETPOLL is not set
- # CONFIG_NET_POLL_CONTROLLER is not set
--
--#
--# ISDN subsystem
--#
- # CONFIG_ISDN is not set
-
-#
--# Telephony Support
+-# USB Gadget Support
-#
- # CONFIG_PHONE is not set
+ CONFIG_USB_GADGET=y
+ # CONFIG_USB_GADGET_DEBUG is not set
+ # CONFIG_USB_GADGET_DEBUG_FILES is not set
+@@ -796,27 +859,31 @@
+ # CONFIG_USB_FILE_STORAGE_TEST is not set
+ CONFIG_USB_G_SERIAL=m
+ # CONFIG_USB_MIDI_GADGET is not set
+-CONFIG_MMC=m
++# CONFIG_USB_G_PRINTER is not set
++CONFIG_MMC=y
+ # CONFIG_MMC_DEBUG is not set
+ # CONFIG_MMC_UNSAFE_RESUME is not set
#
- # Input device support
+ # MMC/SD Card Drivers
#
--# CONFIG_INPUT is not set
-+CONFIG_INPUT=m
-+# CONFIG_INPUT_FF_MEMLESS is not set
-+CONFIG_INPUT_POLLDEV=m
-+
-+#
-+# Userland interfaces
-+#
-+CONFIG_INPUT_MOUSEDEV=m
-+CONFIG_INPUT_MOUSEDEV_PSAUX=y
-+CONFIG_INPUT_MOUSEDEV_SCREEN_X=1024
-+CONFIG_INPUT_MOUSEDEV_SCREEN_Y=768
-+# CONFIG_INPUT_JOYDEV is not set
-+CONFIG_INPUT_EVDEV=m
-+# CONFIG_INPUT_EVBUG is not set
-+
-+#
-+# Input Device Drivers
-+#
-+CONFIG_INPUT_KEYBOARD=y
-+# CONFIG_KEYBOARD_ATKBD is not set
-+# CONFIG_KEYBOARD_SUNKBD is not set
-+# CONFIG_KEYBOARD_LKKBD is not set
-+# CONFIG_KEYBOARD_XTKBD is not set
-+# CONFIG_KEYBOARD_NEWTON is not set
-+# CONFIG_KEYBOARD_STOWAWAY is not set
-+CONFIG_KEYBOARD_GPIO=m
-+CONFIG_INPUT_MOUSE=y
-+# CONFIG_MOUSE_PS2 is not set
-+# CONFIG_MOUSE_SERIAL is not set
-+# CONFIG_MOUSE_VSXXXAA is not set
-+CONFIG_MOUSE_GPIO=m
-+# CONFIG_INPUT_JOYSTICK is not set
-+# CONFIG_INPUT_TABLET is not set
-+# CONFIG_INPUT_TOUCHSCREEN is not set
-+# CONFIG_INPUT_MISC is not set
+-CONFIG_MMC_BLOCK=m
++CONFIG_MMC_BLOCK=y
+ CONFIG_MMC_BLOCK_BOUNCE=y
+ # CONFIG_SDIO_UART is not set
#
- # Hardware I/O ports
-@@ -467,40 +583,94 @@
+ # MMC/SD Host Controller Drivers
#
- CONFIG_SERIAL_ATMEL=y
- CONFIG_SERIAL_ATMEL_CONSOLE=y
-+CONFIG_SERIAL_ATMEL_PDC=y
- # CONFIG_SERIAL_ATMEL_TTYAT is not set
- CONFIG_SERIAL_CORE=y
- CONFIG_SERIAL_CORE_CONSOLE=y
- CONFIG_UNIX98_PTYS=y
- # CONFIG_LEGACY_PTYS is not set
--
--#
--# IPMI
--#
- # CONFIG_IPMI_HANDLER is not set
--# CONFIG_WATCHDOG is not set
- # CONFIG_HW_RANDOM is not set
- # CONFIG_RTC is not set
- # CONFIG_GEN_RTC is not set
- # CONFIG_R3964 is not set
- # CONFIG_RAW_DRIVER is not set
-+# CONFIG_TCG_TPM is not set
-+CONFIG_I2C=m
-+CONFIG_I2C_BOARDINFO=y
-+CONFIG_I2C_CHARDEV=m
-+
-+#
-+# I2C Algorithms
-+#
-+CONFIG_I2C_ALGOBIT=m
-+# CONFIG_I2C_ALGOPCF is not set
-+# CONFIG_I2C_ALGOPCA is not set
-+
-+#
-+# I2C Hardware Bus support
-+#
-+CONFIG_I2C_ATMELTWI=m
-+CONFIG_I2C_GPIO=m
-+# CONFIG_I2C_OCORES is not set
-+# CONFIG_I2C_PARPORT_LIGHT is not set
-+# CONFIG_I2C_SIMTEC is not set
-+# CONFIG_I2C_TAOS_EVM is not set
-+# CONFIG_I2C_STUB is not set
-+
-+#
-+# Miscellaneous I2C Chip support
-+#
-+# CONFIG_SENSORS_DS1337 is not set
-+# CONFIG_SENSORS_DS1374 is not set
-+# CONFIG_DS1682 is not set
-+# CONFIG_SENSORS_EEPROM is not set
-+# CONFIG_SENSORS_PCF8574 is not set
-+# CONFIG_SENSORS_PCA9539 is not set
-+# CONFIG_SENSORS_PCF8591 is not set
-+# CONFIG_SENSORS_MAX6875 is not set
-+# CONFIG_SENSORS_TSL2550 is not set
-+# CONFIG_I2C_DEBUG_CORE is not set
-+# CONFIG_I2C_DEBUG_ALGO is not set
-+# CONFIG_I2C_DEBUG_BUS is not set
-+# CONFIG_I2C_DEBUG_CHIP is not set
++CONFIG_MMC_ATMELMCI=y
+ CONFIG_MMC_SPI=m
++# CONFIG_MEMSTICK is not set
+ CONFIG_NEW_LEDS=y
+ CONFIG_LEDS_CLASS=m
#
--# TPM devices
-+# SPI support
+ # LED drivers
#
--# CONFIG_TCG_TPM is not set
--# CONFIG_I2C is not set
-+CONFIG_SPI=y
-+# CONFIG_SPI_DEBUG is not set
-+CONFIG_SPI_MASTER=y
++CONFIG_LEDS_ATMEL_PWM=m
+ CONFIG_LEDS_GPIO=m
#
--# SPI support
-+# SPI Master Controller Drivers
- #
--# CONFIG_SPI is not set
--# CONFIG_SPI_MASTER is not set
-+CONFIG_SPI_ATMEL=y
-+# CONFIG_SPI_BITBANG is not set
+@@ -853,19 +920,22 @@
+ # CONFIG_RTC_DRV_PCF8563 is not set
+ # CONFIG_RTC_DRV_PCF8583 is not set
+ # CONFIG_RTC_DRV_M41T80 is not set
++# CONFIG_RTC_DRV_S35390A is not set
#
--# Dallas's 1-wire bus
-+# SPI Protocol Masters
+ # SPI RTC drivers
#
-+# CONFIG_SPI_AT25 is not set
-+CONFIG_SPI_SPIDEV=m
-+# CONFIG_SPI_TLE62X0 is not set
- # CONFIG_W1 is not set
-+# CONFIG_POWER_SUPPLY is not set
- # CONFIG_HWMON is not set
-+CONFIG_WATCHDOG=y
-+# CONFIG_WATCHDOG_NOWAYOUT is not set
-+
-+#
-+# Watchdog Device Drivers
-+#
-+# CONFIG_SOFT_WATCHDOG is not set
-+CONFIG_AT32AP700X_WDT=y
-+
-+#
-+# Sonics Silicon Backplane
-+#
-+CONFIG_SSB_POSSIBLE=y
-+# CONFIG_SSB is not set
+-# CONFIG_RTC_DRV_RS5C348 is not set
+ # CONFIG_RTC_DRV_MAX6902 is not set
++# CONFIG_RTC_DRV_R9701 is not set
++# CONFIG_RTC_DRV_RS5C348 is not set
#
- # Multifunction device drivers
-@@ -517,23 +687,104 @@
+ # Platform RTC drivers
#
- # Graphics support
- #
--# CONFIG_BACKLIGHT_LCD_SUPPORT is not set
-+# CONFIG_VGASTATE is not set
-+# CONFIG_VIDEO_OUTPUT_CONTROL is not set
-+CONFIG_FB=y
-+# CONFIG_FIRMWARE_EDID is not set
-+# CONFIG_FB_DDC is not set
-+CONFIG_FB_CFB_FILLRECT=y
-+CONFIG_FB_CFB_COPYAREA=y
-+CONFIG_FB_CFB_IMAGEBLIT=y
-+# CONFIG_FB_CFB_REV_PIXELS_IN_BYTE is not set
-+# CONFIG_FB_SYS_FILLRECT is not set
-+# CONFIG_FB_SYS_COPYAREA is not set
-+# CONFIG_FB_SYS_IMAGEBLIT is not set
-+# CONFIG_FB_SYS_FOPS is not set
-+CONFIG_FB_DEFERRED_IO=y
-+# CONFIG_FB_SVGALIB is not set
-+# CONFIG_FB_MACMODES is not set
-+# CONFIG_FB_BACKLIGHT is not set
-+# CONFIG_FB_MODE_HELPERS is not set
-+# CONFIG_FB_TILEBLITTING is not set
-+
-+#
-+# Frame buffer hardware drivers
-+#
-+# CONFIG_FB_S1D13XXX is not set
-+CONFIG_FB_ATMEL=y
-+# CONFIG_FB_VIRTUAL is not set
-+CONFIG_BACKLIGHT_LCD_SUPPORT=y
-+CONFIG_LCD_CLASS_DEVICE=y
-+CONFIG_LCD_LTV350QV=y
-+# CONFIG_BACKLIGHT_CLASS_DEVICE is not set
-
- #
- # Display device support
- #
- # CONFIG_DISPLAY_SUPPORT is not set
--# CONFIG_VGASTATE is not set
--# CONFIG_FB is not set
-+# CONFIG_LOGO is not set
-
- #
- # Sound
- #
--# CONFIG_SOUND is not set
-+CONFIG_SOUND=m
-+
-+#
-+# Advanced Linux Sound Architecture
-+#
-+CONFIG_SND=m
-+CONFIG_SND_TIMER=m
-+CONFIG_SND_PCM=m
-+# CONFIG_SND_SEQUENCER is not set
-+CONFIG_SND_OSSEMUL=y
-+CONFIG_SND_MIXER_OSS=m
-+CONFIG_SND_PCM_OSS=m
-+CONFIG_SND_PCM_OSS_PLUGINS=y
-+# CONFIG_SND_DYNAMIC_MINORS is not set
-+# CONFIG_SND_SUPPORT_OLD_API is not set
-+# CONFIG_SND_VERBOSE_PROCFS is not set
-+# CONFIG_SND_VERBOSE_PRINTK is not set
-+# CONFIG_SND_DEBUG is not set
-+
-+#
-+# Generic devices
-+#
-+CONFIG_SND_AC97_CODEC=m
-+# CONFIG_SND_DUMMY is not set
-+# CONFIG_SND_MTPAV is not set
-+# CONFIG_SND_SERIAL_U16550 is not set
-+# CONFIG_SND_MPU401 is not set
-+
-+#
-+# AVR32 devices
-+#
-+CONFIG_SND_ATMEL_AC97=m
-
- #
--# USB support
-+# SPI devices
- #
-+CONFIG_SND_AT73C213=m
-+CONFIG_SND_AT73C213_TARGET_BITRATE=48000
-+
-+#
-+# System on Chip audio support
-+#
-+# CONFIG_SND_SOC is not set
-+
-+#
-+# SoC Audio support for SuperH
-+#
-+
-+#
-+# Open Sound System
-+#
-+CONFIG_SOUND_PRIME=m
-+# CONFIG_SOUND_MSNDCLAS is not set
-+# CONFIG_SOUND_MSNDPIN is not set
-+CONFIG_SOUND_AT32_ABDAC=m
-+CONFIG_AC97_BUS=m
-+# CONFIG_HID_SUPPORT is not set
-+CONFIG_USB_SUPPORT=y
- # CONFIG_USB_ARCH_HAS_HCD is not set
- # CONFIG_USB_ARCH_HAS_OHCI is not set
- # CONFIG_USB_ARCH_HAS_EHCI is not set
-@@ -545,63 +796,137 @@
- #
- # USB Gadget Support
- #
--# CONFIG_USB_GADGET is not set
--# CONFIG_MMC is not set
--
--#
--# LED devices
--#
--# CONFIG_NEW_LEDS is not set
-+CONFIG_USB_GADGET=y
-+# CONFIG_USB_GADGET_DEBUG is not set
-+# CONFIG_USB_GADGET_DEBUG_FILES is not set
-+# CONFIG_USB_GADGET_DEBUG_FS is not set
-+CONFIG_USB_GADGET_SELECTED=y
-+# CONFIG_USB_GADGET_AMD5536UDC is not set
-+CONFIG_USB_GADGET_ATMEL_USBA=y
-+CONFIG_USB_ATMEL_USBA=y
-+# CONFIG_USB_GADGET_FSL_USB2 is not set
-+# CONFIG_USB_GADGET_NET2280 is not set
-+# CONFIG_USB_GADGET_PXA2XX is not set
-+# CONFIG_USB_GADGET_M66592 is not set
-+# CONFIG_USB_GADGET_GOKU is not set
-+# CONFIG_USB_GADGET_LH7A40X is not set
-+# CONFIG_USB_GADGET_OMAP is not set
-+# CONFIG_USB_GADGET_S3C2410 is not set
-+# CONFIG_USB_GADGET_AT91 is not set
-+# CONFIG_USB_GADGET_DUMMY_HCD is not set
-+CONFIG_USB_GADGET_DUALSPEED=y
-+CONFIG_USB_ZERO=m
-+CONFIG_USB_ETH=m
-+CONFIG_USB_ETH_RNDIS=y
-+CONFIG_USB_GADGETFS=m
-+CONFIG_USB_FILE_STORAGE=m
-+# CONFIG_USB_FILE_STORAGE_TEST is not set
-+CONFIG_USB_G_SERIAL=m
-+# CONFIG_USB_MIDI_GADGET is not set
-+CONFIG_MMC=y
-+# CONFIG_MMC_DEBUG is not set
-+# CONFIG_MMC_UNSAFE_RESUME is not set
-+
-+#
-+# MMC/SD Card Drivers
-+#
-+CONFIG_MMC_BLOCK=y
-+# CONFIG_MMC_BLOCK_BOUNCE is not set
-+# CONFIG_SDIO_UART is not set
-+
-+#
-+# MMC/SD Host Controller Drivers
-+#
-+CONFIG_MMC_ATMELMCI=y
-+CONFIG_MMC_SPI=m
-+CONFIG_NEW_LEDS=y
-+CONFIG_LEDS_CLASS=m
-
- #
- # LED drivers
- #
-+CONFIG_LEDS_ATMEL_PWM=m
-+CONFIG_LEDS_GPIO=m
-
- #
- # LED Triggers
- #
-+CONFIG_LEDS_TRIGGERS=y
-+CONFIG_LEDS_TRIGGER_TIMER=m
-+CONFIG_LEDS_TRIGGER_HEARTBEAT=m
-+CONFIG_RTC_LIB=y
-+CONFIG_RTC_CLASS=y
-+CONFIG_RTC_HCTOSYS=y
-+CONFIG_RTC_HCTOSYS_DEVICE="rtc0"
-+# CONFIG_RTC_DEBUG is not set
-
- #
--# InfiniBand support
-+# RTC interfaces
- #
-+CONFIG_RTC_INTF_SYSFS=y
-+CONFIG_RTC_INTF_PROC=y
-+CONFIG_RTC_INTF_DEV=y
-+# CONFIG_RTC_INTF_DEV_UIE_EMUL is not set
-+# CONFIG_RTC_DRV_TEST is not set
-
- #
--# EDAC - error detection and reporting (RAS) (EXPERIMENTAL)
-+# I2C RTC drivers
- #
-+# CONFIG_RTC_DRV_DS1307 is not set
-+# CONFIG_RTC_DRV_DS1374 is not set
-+# CONFIG_RTC_DRV_DS1672 is not set
-+# CONFIG_RTC_DRV_MAX6900 is not set
-+# CONFIG_RTC_DRV_RS5C372 is not set
-+# CONFIG_RTC_DRV_ISL1208 is not set
-+# CONFIG_RTC_DRV_X1205 is not set
-+# CONFIG_RTC_DRV_PCF8563 is not set
-+# CONFIG_RTC_DRV_PCF8583 is not set
-+# CONFIG_RTC_DRV_M41T80 is not set
-
- #
--# Real Time Clock
-+# SPI RTC drivers
- #
--# CONFIG_RTC_CLASS is not set
-+# CONFIG_RTC_DRV_RS5C348 is not set
-+# CONFIG_RTC_DRV_MAX6902 is not set
-
- #
--# DMA Engine support
-+# Platform RTC drivers
- #
--# CONFIG_DMA_ENGINE is not set
-+# CONFIG_RTC_DRV_DS1553 is not set
-+# CONFIG_RTC_DRV_STK17TA8 is not set
-+# CONFIG_RTC_DRV_DS1742 is not set
-+# CONFIG_RTC_DRV_M48T86 is not set
-+# CONFIG_RTC_DRV_M48T59 is not set
-+# CONFIG_RTC_DRV_V3020 is not set
-
- #
--# DMA Clients
-+# on-CPU RTC drivers
- #
-+CONFIG_RTC_DRV_AT32AP700X=y
-
- #
--# DMA Devices
-+# Userspace I/O
- #
-+# CONFIG_UIO is not set
-
++# CONFIG_RTC_DRV_DS1511 is not set
+ # CONFIG_RTC_DRV_DS1553 is not set
+-# CONFIG_RTC_DRV_STK17TA8 is not set
+ # CONFIG_RTC_DRV_DS1742 is not set
++# CONFIG_RTC_DRV_STK17TA8 is not set
+ # CONFIG_RTC_DRV_M48T86 is not set
+ # CONFIG_RTC_DRV_M48T59 is not set
+ # CONFIG_RTC_DRV_V3020 is not set
+@@ -883,13 +953,13 @@
#
# File systems
#
+CONFIG_EXT2_FS=y
# CONFIG_EXT2_FS_XATTR is not set
# CONFIG_EXT2_FS_XIP is not set
--# CONFIG_EXT3_FS is not set
+-CONFIG_EXT3_FS=m
+CONFIG_EXT3_FS=y
-+# CONFIG_EXT3_FS_XATTR is not set
+ # CONFIG_EXT3_FS_XATTR is not set
# CONFIG_EXT4DEV_FS is not set
+-CONFIG_JBD=m
+CONFIG_JBD=y
-+# CONFIG_JBD_DEBUG is not set
+ # CONFIG_JBD_DEBUG is not set
# CONFIG_REISERFS_FS is not set
# CONFIG_JFS_FS is not set
- # CONFIG_FS_POSIX_ACL is not set
+@@ -897,12 +967,10 @@
# CONFIG_XFS_FS is not set
# CONFIG_GFS2_FS is not set
# CONFIG_OCFS2_FS is not set
-CONFIG_MINIX_FS=m
-+# CONFIG_MINIX_FS is not set
- # CONFIG_ROMFS_FS is not set
+-# CONFIG_ROMFS_FS is not set
++# CONFIG_DNOTIFY is not set
CONFIG_INOTIFY=y
CONFIG_INOTIFY_USER=y
-@@ -609,7 +934,7 @@
- # CONFIG_DNOTIFY is not set
+ # CONFIG_QUOTA is not set
+-# CONFIG_DNOTIFY is not set
# CONFIG_AUTOFS_FS is not set
# CONFIG_AUTOFS4_FS is not set
--# CONFIG_FUSE_FS is not set
-+CONFIG_FUSE_FS=m
-
- #
- # CD-ROM/DVD Filesystems
-@@ -637,8 +962,7 @@
+ CONFIG_FUSE_FS=m
+@@ -933,7 +1001,7 @@
CONFIG_TMPFS=y
# CONFIG_TMPFS_POSIX_ACL is not set
# CONFIG_HUGETLB_PAGE is not set
--CONFIG_RAMFS=y
--CONFIG_CONFIGFS_FS=m
+-# CONFIG_CONFIGFS_FS is not set
+CONFIG_CONFIGFS_FS=y
#
# Miscellaneous filesystems
-@@ -652,11 +976,12 @@
- # CONFIG_EFS_FS is not set
- CONFIG_JFFS2_FS=y
- CONFIG_JFFS2_FS_DEBUG=0
--CONFIG_JFFS2_FS_WRITEBUFFER=y
-+# CONFIG_JFFS2_FS_WRITEBUFFER is not set
- # CONFIG_JFFS2_SUMMARY is not set
- # CONFIG_JFFS2_FS_XATTR is not set
- # CONFIG_JFFS2_COMPRESSION_OPTIONS is not set
- CONFIG_JFFS2_ZLIB=y
-+# CONFIG_JFFS2_LZO is not set
- CONFIG_JFFS2_RTIME=y
+@@ -957,8 +1025,10 @@
# CONFIG_JFFS2_RUBIN is not set
# CONFIG_CRAMFS is not set
-@@ -665,10 +990,7 @@
+ # CONFIG_VXFS_FS is not set
++CONFIG_MINIX_FS=m
+ # CONFIG_HPFS_FS is not set
# CONFIG_QNX4FS_FS is not set
++# CONFIG_ROMFS_FS is not set
# CONFIG_SYSV_FS is not set
# CONFIG_UFS_FS is not set
--
--#
--# Network File Systems
--#
-+CONFIG_NETWORK_FILESYSTEMS=y
- CONFIG_NFS_FS=y
- CONFIG_NFS_V3=y
- # CONFIG_NFS_V3_ACL is not set
-@@ -688,17 +1010,12 @@
- # CONFIG_NCP_FS is not set
- # CONFIG_CODA_FS is not set
- # CONFIG_AFS_FS is not set
--# CONFIG_9P_FS is not set
-
- #
- # Partition Types
- #
- # CONFIG_PARTITION_ADVANCED is not set
- CONFIG_MSDOS_PARTITION=y
--
--#
--# Native Language Support
--#
- CONFIG_NLS=m
- CONFIG_NLS_DEFAULT="iso8859-1"
- CONFIG_NLS_CODEPAGE_437=m
-@@ -739,17 +1056,18 @@
- # CONFIG_NLS_KOI8_R is not set
+ CONFIG_NETWORK_FILESYSTEMS=y
+@@ -1028,11 +1098,6 @@
# CONFIG_NLS_KOI8_U is not set
CONFIG_NLS_UTF8=m
--
--#
--# Distributed Lock Manager
--#
# CONFIG_DLM is not set
-+CONFIG_INSTRUMENTATION=y
-+CONFIG_PROFILING=y
-+CONFIG_OPROFILE=m
-+CONFIG_KPROBES=y
-+# CONFIG_MARKERS is not set
+-CONFIG_INSTRUMENTATION=y
+-CONFIG_PROFILING=y
+-CONFIG_OPROFILE=m
+-CONFIG_KPROBES=y
+-# CONFIG_MARKERS is not set
#
# Kernel hacking
- #
--CONFIG_TRACE_IRQFLAGS_SUPPORT=y
- # CONFIG_PRINTK_TIME is not set
-+CONFIG_ENABLE_WARN_DEPRECATED=y
- CONFIG_ENABLE_MUST_CHECK=y
- CONFIG_MAGIC_SYSRQ=y
- # CONFIG_UNUSED_SYMBOLS is not set
-@@ -758,12 +1076,17 @@
- CONFIG_DEBUG_KERNEL=y
- # CONFIG_DEBUG_SHIRQ is not set
- CONFIG_DETECT_SOFTLOCKUP=y
-+CONFIG_SCHED_DEBUG=y
+@@ -1051,6 +1116,7 @@
# CONFIG_SCHEDSTATS is not set
# CONFIG_TIMER_STATS is not set
-+# CONFIG_SLUB_DEBUG_ON is not set
+ # CONFIG_SLUB_DEBUG_ON is not set
++# CONFIG_SLUB_STATS is not set
# CONFIG_DEBUG_RT_MUTEXES is not set
# CONFIG_RT_MUTEX_TESTER is not set
# CONFIG_DEBUG_SPINLOCK is not set
- # CONFIG_DEBUG_MUTEXES is not set
-+# CONFIG_DEBUG_LOCK_ALLOC is not set
-+# CONFIG_PROVE_LOCKING is not set
-+# CONFIG_LOCK_STAT is not set
- # CONFIG_DEBUG_SPINLOCK_SLEEP is not set
- # CONFIG_DEBUG_LOCKING_API_SELFTESTS is not set
- # CONFIG_DEBUG_KOBJECT is not set
-@@ -771,22 +1094,63 @@
- # CONFIG_DEBUG_INFO is not set
- # CONFIG_DEBUG_VM is not set
+@@ -1067,9 +1133,10 @@
# CONFIG_DEBUG_LIST is not set
-+# CONFIG_DEBUG_SG is not set
+ # CONFIG_DEBUG_SG is not set
CONFIG_FRAME_POINTER=y
- CONFIG_FORCED_INLINING=y
-+# CONFIG_BOOT_PRINTK_DELAY is not set
+-CONFIG_FORCED_INLINING=y
+ # CONFIG_BOOT_PRINTK_DELAY is not set
# CONFIG_RCU_TORTURE_TEST is not set
-+# CONFIG_LKDTM is not set
++# CONFIG_KPROBES_SANITY_TEST is not set
++# CONFIG_BACKTRACE_SELF_TEST is not set
+ # CONFIG_LKDTM is not set
# CONFIG_FAULT_INJECTION is not set
--# CONFIG_KPROBES is not set
-+# CONFIG_SAMPLES is not set
+ # CONFIG_SAMPLES is not set
+@@ -1082,7 +1149,9 @@
+ # CONFIG_SECURITY_FILE_CAPABILITIES is not set
+ CONFIG_CRYPTO=y
+ CONFIG_CRYPTO_ALGAPI=m
++CONFIG_CRYPTO_AEAD=m
+ CONFIG_CRYPTO_BLKCIPHER=m
++# CONFIG_CRYPTO_SEQIV is not set
+ CONFIG_CRYPTO_HASH=m
+ CONFIG_CRYPTO_MANAGER=m
+ CONFIG_CRYPTO_HMAC=m
+@@ -1101,6 +1170,9 @@
+ # CONFIG_CRYPTO_PCBC is not set
+ # CONFIG_CRYPTO_LRW is not set
+ # CONFIG_CRYPTO_XTS is not set
++# CONFIG_CRYPTO_CTR is not set
++# CONFIG_CRYPTO_GCM is not set
++# CONFIG_CRYPTO_CCM is not set
+ # CONFIG_CRYPTO_CRYPTD is not set
+ CONFIG_CRYPTO_DES=m
+ # CONFIG_CRYPTO_FCRYPT is not set
+@@ -1115,12 +1187,14 @@
+ # CONFIG_CRYPTO_KHAZAD is not set
+ # CONFIG_CRYPTO_ANUBIS is not set
+ # CONFIG_CRYPTO_SEED is not set
++# CONFIG_CRYPTO_SALSA20 is not set
+ CONFIG_CRYPTO_DEFLATE=m
+ # CONFIG_CRYPTO_MICHAEL_MIC is not set
+ # CONFIG_CRYPTO_CRC32C is not set
+ # CONFIG_CRYPTO_CAMELLIA is not set
+ # CONFIG_CRYPTO_TEST is not set
+-# CONFIG_CRYPTO_AUTHENC is not set
++CONFIG_CRYPTO_AUTHENC=m
++# CONFIG_CRYPTO_LZO is not set
+ # CONFIG_CRYPTO_HW is not set
#
- # Security options
+@@ -1135,6 +1209,7 @@
+ # CONFIG_LIBCRC32C is not set
+ CONFIG_ZLIB_INFLATE=y
+ CONFIG_ZLIB_DEFLATE=y
++CONFIG_GENERIC_ALLOCATOR=y
+ CONFIG_PLIST=y
+ CONFIG_HAS_IOMEM=y
+ CONFIG_HAS_IOPORT=y
+diff --exclude=.git -urN linux-2.6.25.6/arch/avr32/configs/atstk1003_defconfig avr32-2.6/arch/avr32/configs/atstk1003_defconfig
+--- linux-2.6.25.6/arch/avr32/configs/atstk1003_defconfig 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/avr32/configs/atstk1003_defconfig 2008-06-12 15:09:38.715815679 +0200
+@@ -1,7 +1,7 @@
#
- # CONFIG_KEYS is not set
- # CONFIG_SECURITY is not set
--
--#
--# Cryptographic options
--#
--# CONFIG_CRYPTO is not set
-+# CONFIG_SECURITY_FILE_CAPABILITIES is not set
-+CONFIG_CRYPTO=y
-+CONFIG_CRYPTO_ALGAPI=m
-+CONFIG_CRYPTO_BLKCIPHER=m
-+CONFIG_CRYPTO_HASH=m
-+CONFIG_CRYPTO_MANAGER=m
-+CONFIG_CRYPTO_HMAC=m
-+# CONFIG_CRYPTO_XCBC is not set
-+# CONFIG_CRYPTO_NULL is not set
-+# CONFIG_CRYPTO_MD4 is not set
-+CONFIG_CRYPTO_MD5=m
-+CONFIG_CRYPTO_SHA1=m
-+# CONFIG_CRYPTO_SHA256 is not set
-+# CONFIG_CRYPTO_SHA512 is not set
-+# CONFIG_CRYPTO_WP512 is not set
-+# CONFIG_CRYPTO_TGR192 is not set
-+# CONFIG_CRYPTO_GF128MUL is not set
-+# CONFIG_CRYPTO_ECB is not set
-+CONFIG_CRYPTO_CBC=m
-+# CONFIG_CRYPTO_PCBC is not set
-+# CONFIG_CRYPTO_LRW is not set
-+# CONFIG_CRYPTO_XTS is not set
-+# CONFIG_CRYPTO_CRYPTD is not set
-+CONFIG_CRYPTO_DES=m
-+# CONFIG_CRYPTO_FCRYPT is not set
-+# CONFIG_CRYPTO_BLOWFISH is not set
-+# CONFIG_CRYPTO_TWOFISH is not set
-+# CONFIG_CRYPTO_SERPENT is not set
-+# CONFIG_CRYPTO_AES is not set
-+# CONFIG_CRYPTO_CAST5 is not set
-+# CONFIG_CRYPTO_CAST6 is not set
-+# CONFIG_CRYPTO_TEA is not set
-+# CONFIG_CRYPTO_ARC4 is not set
-+# CONFIG_CRYPTO_KHAZAD is not set
-+# CONFIG_CRYPTO_ANUBIS is not set
-+# CONFIG_CRYPTO_SEED is not set
-+CONFIG_CRYPTO_DEFLATE=m
-+# CONFIG_CRYPTO_MICHAEL_MIC is not set
-+# CONFIG_CRYPTO_CRC32C is not set
-+# CONFIG_CRYPTO_CAMELLIA is not set
-+# CONFIG_CRYPTO_TEST is not set
-+# CONFIG_CRYPTO_AUTHENC is not set
-+# CONFIG_CRYPTO_HW is not set
+ # Automatically generated make config: don't edit
+-# Linux kernel version: 2.6.24-rc7
+-# Wed Jan 9 22:54:34 2008
++# Linux kernel version: 2.6.25.4
++# Wed Jun 11 15:33:36 2008
+ #
+ CONFIG_AVR32=y
+ CONFIG_GENERIC_GPIO=y
+@@ -13,10 +13,10 @@
+ CONFIG_GENERIC_IRQ_PROBE=y
+ CONFIG_RWSEM_GENERIC_SPINLOCK=y
+ CONFIG_GENERIC_TIME=y
++CONFIG_GENERIC_CLOCKEVENTS=y
+ # CONFIG_RWSEM_XCHGADD_ALGORITHM is not set
+ # CONFIG_ARCH_HAS_ILOG2_U32 is not set
+ # CONFIG_ARCH_HAS_ILOG2_U64 is not set
+-CONFIG_ARCH_SUPPORTS_OPROFILE=y
+ CONFIG_GENERIC_HWEIGHT=y
+ CONFIG_GENERIC_CALIBRATE_DELAY=y
+ CONFIG_GENERIC_BUG=y
+@@ -39,17 +39,15 @@
+ CONFIG_TASKSTATS=y
+ CONFIG_TASK_DELAY_ACCT=y
+ # CONFIG_TASK_XACCT is not set
+-# CONFIG_USER_NS is not set
+-# CONFIG_PID_NS is not set
+ CONFIG_AUDIT=y
+ # CONFIG_IKCONFIG is not set
+ CONFIG_LOG_BUF_SHIFT=14
+ # CONFIG_CGROUPS is not set
+-CONFIG_FAIR_GROUP_SCHED=y
+-CONFIG_FAIR_USER_SCHED=y
+-# CONFIG_FAIR_CGROUP_SCHED is not set
++# CONFIG_GROUP_SCHED is not set
+ CONFIG_SYSFS_DEPRECATED=y
++CONFIG_SYSFS_DEPRECATED_V2=y
+ CONFIG_RELAY=y
++# CONFIG_NAMESPACES is not set
+ CONFIG_BLK_DEV_INITRD=y
+ CONFIG_INITRAMFS_SOURCE=""
+ CONFIG_CC_OPTIMIZE_FOR_SIZE=y
+@@ -63,11 +61,13 @@
+ CONFIG_PRINTK=y
+ CONFIG_BUG=y
+ CONFIG_ELF_CORE=y
++# CONFIG_COMPAT_BRK is not set
+ # CONFIG_BASE_FULL is not set
+ CONFIG_FUTEX=y
+ CONFIG_ANON_INODES=y
+ CONFIG_EPOLL=y
+ CONFIG_SIGNALFD=y
++CONFIG_TIMERFD=y
+ CONFIG_EVENTFD=y
+ CONFIG_SHMEM=y
+ CONFIG_VM_EVENT_COUNTERS=y
+@@ -75,6 +75,14 @@
+ # CONFIG_SLAB is not set
+ CONFIG_SLUB=y
+ # CONFIG_SLOB is not set
++CONFIG_PROFILING=y
++# CONFIG_MARKERS is not set
++CONFIG_OPROFILE=m
++CONFIG_HAVE_OPROFILE=y
++CONFIG_KPROBES=y
++CONFIG_HAVE_KPROBES=y
++# CONFIG_HAVE_KRETPROBES is not set
++CONFIG_PROC_PAGE_MONITOR=y
+ CONFIG_SLABINFO=y
+ CONFIG_RT_MUTEXES=y
+ # CONFIG_TINY_SHMEM is not set
+@@ -103,10 +111,15 @@
+ CONFIG_DEFAULT_CFQ=y
+ # CONFIG_DEFAULT_NOOP is not set
+ CONFIG_DEFAULT_IOSCHED="cfq"
++CONFIG_CLASSIC_RCU=y
#
- # Library routines
-@@ -794,10 +1158,10 @@
- CONFIG_BITREVERSE=y
- CONFIG_CRC_CCITT=m
- # CONFIG_CRC16 is not set
--# CONFIG_CRC_ITU_T is not set
-+CONFIG_CRC_ITU_T=m
- CONFIG_CRC32=y
-+CONFIG_CRC7=m
- # CONFIG_LIBCRC32C is not set
--CONFIG_AUDIT_GENERIC=y
- CONFIG_ZLIB_INFLATE=y
- CONFIG_ZLIB_DEFLATE=y
- CONFIG_PLIST=y
---- /dev/null
-+++ b/arch/avr32/configs/atstk1003_defconfig
-@@ -0,0 +1,1041 @@
+ # System Type and features
+ #
++CONFIG_TICK_ONESHOT=y
++CONFIG_NO_HZ=y
++CONFIG_HIGH_RES_TIMERS=y
++CONFIG_GENERIC_CLOCKEVENTS_BUILD=y
+ CONFIG_SUBARCH_AVR32B=y
+ CONFIG_MMU=y
+ CONFIG_PERFORMANCE_COUNTERS=y
+@@ -118,12 +131,16 @@
+ # CONFIG_BOARD_ATSTK1002 is not set
+ CONFIG_BOARD_ATSTK1003=y
+ # CONFIG_BOARD_ATSTK1004 is not set
++# CONFIG_BOARD_ATSTK1006 is not set
+ # CONFIG_BOARD_ATSTK100X_CUSTOM is not set
+ # CONFIG_BOARD_ATSTK100X_SPI1 is not set
+ # CONFIG_BOARD_ATSTK1000_J2_LED is not set
+ # CONFIG_BOARD_ATSTK1000_J2_LED8 is not set
+ # CONFIG_BOARD_ATSTK1000_J2_RGB is not set
+ CONFIG_BOARD_ATSTK1000_EXTDAC=y
++# CONFIG_BOARD_ATSTK100X_ENABLE_AC97 is not set
++# CONFIG_BOARD_ATSTK1000_CF_HACKS is not set
++# CONFIG_BOARD_ATSTK100X_ENABLE_PSIF is not set
+ CONFIG_LOADER_U_BOOT=y
+
+ #
+@@ -132,6 +149,7 @@
+ # CONFIG_AP700X_32_BIT_SMC is not set
+ CONFIG_AP700X_16_BIT_SMC=y
+ # CONFIG_AP700X_8_BIT_SMC is not set
++CONFIG_GPIO_DEV=y
+ CONFIG_LOAD_ADDRESS=0x10000000
+ CONFIG_ENTRY_ADDRESS=0x90000000
+ CONFIG_PHYS_OFFSET=0x10000000
+@@ -157,16 +175,26 @@
+ CONFIG_ZONE_DMA_FLAG=0
+ CONFIG_VIRT_TO_BUS=y
+ # CONFIG_OWNERSHIP_TRACE is not set
++CONFIG_NMI_DEBUGGING=y
++CONFIG_DW_DMAC=y
+ # CONFIG_HZ_100 is not set
+ CONFIG_HZ_250=y
+ # CONFIG_HZ_300 is not set
+ # CONFIG_HZ_1000 is not set
+ CONFIG_HZ=250
++# CONFIG_SCHED_HRTICK is not set
+ CONFIG_CMDLINE=""
+
+ #
+ # Power management options
+ #
++CONFIG_ARCH_SUSPEND_POSSIBLE=y
++CONFIG_PM=y
++# CONFIG_PM_LEGACY is not set
++# CONFIG_PM_DEBUG is not set
++CONFIG_PM_SLEEP=y
++CONFIG_SUSPEND=y
++CONFIG_SUSPEND_FREEZER=y
+
+ #
+ # CPU Frequency scaling
+@@ -175,9 +203,9 @@
+ CONFIG_CPU_FREQ_TABLE=y
+ # CONFIG_CPU_FREQ_DEBUG is not set
+ # CONFIG_CPU_FREQ_STAT is not set
+-CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE=y
++# CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE is not set
+ # CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE is not set
+-# CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND is not set
++CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y
+ # CONFIG_CPU_FREQ_DEFAULT_GOV_CONSERVATIVE is not set
+ CONFIG_CPU_FREQ_GOV_PERFORMANCE=y
+ # CONFIG_CPU_FREQ_GOV_POWERSAVE is not set
+@@ -260,6 +288,7 @@
+ # CONFIG_NET_PKTGEN is not set
+ # CONFIG_NET_TCPPROBE is not set
+ # CONFIG_HAMRADIO is not set
++# CONFIG_CAN is not set
+ # CONFIG_IRDA is not set
+ # CONFIG_BT is not set
+ # CONFIG_AF_RXRPC is not set
+@@ -376,13 +405,18 @@
+ CONFIG_BLK_DEV_RAM=m
+ CONFIG_BLK_DEV_RAM_COUNT=16
+ CONFIG_BLK_DEV_RAM_SIZE=4096
+-CONFIG_BLK_DEV_RAM_BLOCKSIZE=1024
++# CONFIG_BLK_DEV_XIP is not set
+ # CONFIG_CDROM_PKTCDVD is not set
+ # CONFIG_ATA_OVER_ETH is not set
+ CONFIG_MISC_DEVICES=y
++CONFIG_ATMEL_PWM=m
++CONFIG_ATMEL_TCLIB=y
++CONFIG_ATMEL_TCB_CLKSRC=y
++CONFIG_ATMEL_TCB_CLKSRC_BLOCK=0
+ # CONFIG_EEPROM_93CX6 is not set
+ CONFIG_ATMEL_SSC=m
+-# CONFIG_IDE is not set
++# CONFIG_ENCLOSURE_SERVICES is not set
++# CONFIG_HAVE_IDE is not set
+
+ #
+ # SCSI device support
+@@ -427,6 +461,7 @@
+ # CONFIG_SCSI_DEBUG is not set
+ CONFIG_ATA=m
+ # CONFIG_ATA_NONSTANDARD is not set
++# CONFIG_SATA_MV is not set
+ CONFIG_PATA_AT32=m
+ # CONFIG_PATA_PLATFORM is not set
+ # CONFIG_MD is not set
+@@ -460,7 +495,6 @@
+ # CONFIG_PPPOL2TP is not set
+ # CONFIG_SLIP is not set
+ CONFIG_SLHC=m
+-# CONFIG_SHAPER is not set
+ # CONFIG_NETCONSOLE is not set
+ # CONFIG_NETPOLL is not set
+ # CONFIG_NET_POLL_CONTROLLER is not set
+@@ -528,6 +562,7 @@
+ #
+ CONFIG_SERIAL_ATMEL=y
+ CONFIG_SERIAL_ATMEL_CONSOLE=y
++CONFIG_SERIAL_ATMEL_PDC=y
+ # CONFIG_SERIAL_ATMEL_TTYAT is not set
+ CONFIG_SERIAL_CORE=y
+ CONFIG_SERIAL_CORE_CONSOLE=y
+@@ -535,8 +570,6 @@
+ # CONFIG_LEGACY_PTYS is not set
+ # CONFIG_IPMI_HANDLER is not set
+ # CONFIG_HW_RANDOM is not set
+-# CONFIG_RTC is not set
+-# CONFIG_GEN_RTC is not set
+ # CONFIG_R3964 is not set
+ # CONFIG_RAW_DRIVER is not set
+ # CONFIG_TCG_TPM is not set
+@@ -554,6 +587,7 @@
+ #
+ # I2C Hardware Bus support
+ #
++CONFIG_I2C_ATMELTWI=m
+ CONFIG_I2C_GPIO=m
+ # CONFIG_I2C_OCORES is not set
+ # CONFIG_I2C_PARPORT_LIGHT is not set
+@@ -564,13 +598,12 @@
+ #
+ # Miscellaneous I2C Chip support
+ #
+-# CONFIG_SENSORS_DS1337 is not set
+-# CONFIG_SENSORS_DS1374 is not set
+ # CONFIG_DS1682 is not set
+ # CONFIG_SENSORS_EEPROM is not set
+ # CONFIG_SENSORS_PCF8574 is not set
+-# CONFIG_SENSORS_PCA9539 is not set
++# CONFIG_PCF8575 is not set
+ # CONFIG_SENSORS_PCF8591 is not set
++# CONFIG_TPS65010 is not set
+ # CONFIG_SENSORS_MAX6875 is not set
+ # CONFIG_SENSORS_TSL2550 is not set
+ # CONFIG_I2C_DEBUG_CORE is not set
+@@ -597,9 +630,27 @@
+ # CONFIG_SPI_AT25 is not set
+ CONFIG_SPI_SPIDEV=m
+ # CONFIG_SPI_TLE62X0 is not set
++CONFIG_HAVE_GPIO_LIB=y
++
+#
-+# Automatically generated make config: don't edit
-+# Linux kernel version: 2.6.24
-+# Thu Mar 6 12:50:27 2008
++# GPIO Support
+#
-+CONFIG_AVR32=y
-+CONFIG_GENERIC_GPIO=y
-+CONFIG_GENERIC_HARDIRQS=y
-+CONFIG_STACKTRACE_SUPPORT=y
-+CONFIG_LOCKDEP_SUPPORT=y
-+CONFIG_TRACE_IRQFLAGS_SUPPORT=y
-+CONFIG_HARDIRQS_SW_RESEND=y
-+CONFIG_GENERIC_IRQ_PROBE=y
-+CONFIG_RWSEM_GENERIC_SPINLOCK=y
-+CONFIG_GENERIC_TIME=y
-+CONFIG_GENERIC_CLOCKEVENTS=y
-+# CONFIG_RWSEM_XCHGADD_ALGORITHM is not set
-+# CONFIG_ARCH_HAS_ILOG2_U32 is not set
-+# CONFIG_ARCH_HAS_ILOG2_U64 is not set
-+CONFIG_ARCH_SUPPORTS_OPROFILE=y
-+CONFIG_GENERIC_HWEIGHT=y
-+CONFIG_GENERIC_CALIBRATE_DELAY=y
-+CONFIG_GENERIC_BUG=y
-+CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
++# CONFIG_DEBUG_GPIO is not set
+
+#
-+# General setup
++# I2C GPIO expanders:
+#
-+CONFIG_EXPERIMENTAL=y
-+CONFIG_BROKEN_ON_SMP=y
-+CONFIG_INIT_ENV_ARG_LIMIT=32
-+CONFIG_LOCALVERSION=""
-+# CONFIG_LOCALVERSION_AUTO is not set
-+CONFIG_SWAP=y
-+CONFIG_SYSVIPC=y
-+CONFIG_SYSVIPC_SYSCTL=y
-+CONFIG_POSIX_MQUEUE=y
-+CONFIG_BSD_PROCESS_ACCT=y
-+CONFIG_BSD_PROCESS_ACCT_V3=y
-+CONFIG_TASKSTATS=y
-+CONFIG_TASK_DELAY_ACCT=y
-+# CONFIG_TASK_XACCT is not set
-+# CONFIG_USER_NS is not set
-+# CONFIG_PID_NS is not set
-+CONFIG_AUDIT=y
-+# CONFIG_IKCONFIG is not set
-+CONFIG_LOG_BUF_SHIFT=14
-+# CONFIG_CGROUPS is not set
-+CONFIG_FAIR_GROUP_SCHED=y
-+CONFIG_FAIR_USER_SCHED=y
-+# CONFIG_FAIR_CGROUP_SCHED is not set
-+CONFIG_SYSFS_DEPRECATED=y
-+CONFIG_RELAY=y
-+CONFIG_BLK_DEV_INITRD=y
-+CONFIG_INITRAMFS_SOURCE=""
-+CONFIG_CC_OPTIMIZE_FOR_SIZE=y
-+CONFIG_SYSCTL=y
-+CONFIG_EMBEDDED=y
-+# CONFIG_SYSCTL_SYSCALL is not set
-+CONFIG_KALLSYMS=y
-+# CONFIG_KALLSYMS_ALL is not set
-+# CONFIG_KALLSYMS_EXTRA_PASS is not set
-+CONFIG_HOTPLUG=y
-+CONFIG_PRINTK=y
-+CONFIG_BUG=y
-+CONFIG_ELF_CORE=y
-+# CONFIG_BASE_FULL is not set
-+CONFIG_FUTEX=y
-+CONFIG_ANON_INODES=y
-+CONFIG_EPOLL=y
-+CONFIG_SIGNALFD=y
-+CONFIG_EVENTFD=y
-+CONFIG_SHMEM=y
-+CONFIG_VM_EVENT_COUNTERS=y
-+# CONFIG_SLUB_DEBUG is not set
-+# CONFIG_SLAB is not set
-+CONFIG_SLUB=y
-+# CONFIG_SLOB is not set
-+CONFIG_SLABINFO=y
-+CONFIG_RT_MUTEXES=y
-+# CONFIG_TINY_SHMEM is not set
-+CONFIG_BASE_SMALL=1
-+CONFIG_MODULES=y
-+CONFIG_MODULE_UNLOAD=y
-+# CONFIG_MODULE_FORCE_UNLOAD is not set
-+# CONFIG_MODVERSIONS is not set
-+# CONFIG_MODULE_SRCVERSION_ALL is not set
-+# CONFIG_KMOD is not set
-+CONFIG_BLOCK=y
-+# CONFIG_LBD is not set
-+# CONFIG_BLK_DEV_IO_TRACE is not set
-+# CONFIG_LSF is not set
-+# CONFIG_BLK_DEV_BSG is not set
++# CONFIG_GPIO_PCA953X is not set
++# CONFIG_GPIO_PCF857X is not set
+
+#
-+# IO Schedulers
++# SPI GPIO expanders:
+#
-+CONFIG_IOSCHED_NOOP=y
-+# CONFIG_IOSCHED_AS is not set
-+# CONFIG_IOSCHED_DEADLINE is not set
-+CONFIG_IOSCHED_CFQ=y
-+# CONFIG_DEFAULT_AS is not set
-+# CONFIG_DEFAULT_DEADLINE is not set
-+CONFIG_DEFAULT_CFQ=y
-+# CONFIG_DEFAULT_NOOP is not set
-+CONFIG_DEFAULT_IOSCHED="cfq"
++# CONFIG_GPIO_MCP23S08 is not set
+ # CONFIG_W1 is not set
+ # CONFIG_POWER_SUPPLY is not set
+ # CONFIG_HWMON is not set
++# CONFIG_THERMAL is not set
+ CONFIG_WATCHDOG=y
+ # CONFIG_WATCHDOG_NOWAYOUT is not set
+
+@@ -665,12 +716,18 @@
+ #
+ # Generic devices
+ #
++CONFIG_SND_AC97_CODEC=m
+ # CONFIG_SND_DUMMY is not set
+ # CONFIG_SND_MTPAV is not set
+ # CONFIG_SND_SERIAL_U16550 is not set
+ # CONFIG_SND_MPU401 is not set
+
+ #
++# AVR32 devices
++#
++CONFIG_SND_ATMEL_AC97=m
+
+#
-+# System Type and features
+ # SPI devices
+ #
+ CONFIG_SND_AT73C213=m
+@@ -686,9 +743,14 @@
+ #
+
+ #
++# ALSA SoC audio for Freescale SOCs
+#
-+CONFIG_TICK_ONESHOT=y
-+CONFIG_NO_HZ=y
-+CONFIG_HIGH_RES_TIMERS=y
++
++#
+ # Open Sound System
+ #
+ # CONFIG_SOUND_PRIME is not set
++CONFIG_AC97_BUS=m
+ # CONFIG_HID_SUPPORT is not set
+ CONFIG_USB_SUPPORT=y
+ # CONFIG_USB_ARCH_HAS_HCD is not set
+@@ -698,10 +760,6 @@
+ #
+ # NOTE: USB_STORAGE enables SCSI, and 'SCSI disk support'
+ #
+-
+-#
+-# USB Gadget Support
+-#
+ CONFIG_USB_GADGET=y
+ # CONFIG_USB_GADGET_DEBUG is not set
+ # CONFIG_USB_GADGET_DEBUG_FILES is not set
+@@ -729,27 +787,31 @@
+ # CONFIG_USB_FILE_STORAGE_TEST is not set
+ CONFIG_USB_G_SERIAL=m
+ # CONFIG_USB_MIDI_GADGET is not set
+-CONFIG_MMC=m
++# CONFIG_USB_G_PRINTER is not set
++CONFIG_MMC=y
+ # CONFIG_MMC_DEBUG is not set
+ # CONFIG_MMC_UNSAFE_RESUME is not set
+
+ #
+ # MMC/SD Card Drivers
+ #
+-CONFIG_MMC_BLOCK=m
++CONFIG_MMC_BLOCK=y
+ # CONFIG_MMC_BLOCK_BOUNCE is not set
+ # CONFIG_SDIO_UART is not set
+
+ #
+ # MMC/SD Host Controller Drivers
+ #
++CONFIG_MMC_ATMELMCI=y
+ CONFIG_MMC_SPI=m
++# CONFIG_MEMSTICK is not set
+ CONFIG_NEW_LEDS=y
+ CONFIG_LEDS_CLASS=y
+
+ #
+ # LED drivers
+ #
++CONFIG_LEDS_ATMEL_PWM=m
+ CONFIG_LEDS_GPIO=y
+
+ #
+@@ -786,19 +848,22 @@
+ # CONFIG_RTC_DRV_PCF8563 is not set
+ # CONFIG_RTC_DRV_PCF8583 is not set
+ # CONFIG_RTC_DRV_M41T80 is not set
++# CONFIG_RTC_DRV_S35390A is not set
+
+ #
+ # SPI RTC drivers
+ #
+-# CONFIG_RTC_DRV_RS5C348 is not set
+ # CONFIG_RTC_DRV_MAX6902 is not set
++# CONFIG_RTC_DRV_R9701 is not set
++# CONFIG_RTC_DRV_RS5C348 is not set
+
+ #
+ # Platform RTC drivers
+ #
++# CONFIG_RTC_DRV_DS1511 is not set
+ # CONFIG_RTC_DRV_DS1553 is not set
+-# CONFIG_RTC_DRV_STK17TA8 is not set
+ # CONFIG_RTC_DRV_DS1742 is not set
++# CONFIG_RTC_DRV_STK17TA8 is not set
+ # CONFIG_RTC_DRV_M48T86 is not set
+ # CONFIG_RTC_DRV_M48T59 is not set
+ # CONFIG_RTC_DRV_V3020 is not set
+@@ -816,13 +881,13 @@
+ #
+ # File systems
+ #
+-CONFIG_EXT2_FS=m
++CONFIG_EXT2_FS=y
+ # CONFIG_EXT2_FS_XATTR is not set
+ # CONFIG_EXT2_FS_XIP is not set
+-CONFIG_EXT3_FS=m
++CONFIG_EXT3_FS=y
+ # CONFIG_EXT3_FS_XATTR is not set
+ # CONFIG_EXT4DEV_FS is not set
+-CONFIG_JBD=m
++CONFIG_JBD=y
+ # CONFIG_JBD_DEBUG is not set
+ # CONFIG_REISERFS_FS is not set
+ # CONFIG_JFS_FS is not set
+@@ -830,12 +895,10 @@
+ # CONFIG_XFS_FS is not set
+ # CONFIG_GFS2_FS is not set
+ # CONFIG_OCFS2_FS is not set
+-# CONFIG_MINIX_FS is not set
+-# CONFIG_ROMFS_FS is not set
++# CONFIG_DNOTIFY is not set
+ CONFIG_INOTIFY=y
+ CONFIG_INOTIFY_USER=y
+ # CONFIG_QUOTA is not set
+-# CONFIG_DNOTIFY is not set
+ # CONFIG_AUTOFS_FS is not set
+ # CONFIG_AUTOFS4_FS is not set
+ CONFIG_FUSE_FS=m
+@@ -866,7 +929,7 @@
+ CONFIG_TMPFS=y
+ # CONFIG_TMPFS_POSIX_ACL is not set
+ # CONFIG_HUGETLB_PAGE is not set
+-CONFIG_CONFIGFS_FS=m
++CONFIG_CONFIGFS_FS=y
+
+ #
+ # Miscellaneous filesystems
+@@ -891,8 +954,10 @@
+ # CONFIG_JFFS2_RUBIN is not set
+ # CONFIG_CRAMFS is not set
+ # CONFIG_VXFS_FS is not set
++# CONFIG_MINIX_FS is not set
+ # CONFIG_HPFS_FS is not set
+ # CONFIG_QNX4FS_FS is not set
++# CONFIG_ROMFS_FS is not set
+ # CONFIG_SYSV_FS is not set
+ # CONFIG_UFS_FS is not set
+ # CONFIG_NETWORK_FILESYSTEMS is not set
+@@ -943,11 +1008,6 @@
+ # CONFIG_NLS_KOI8_U is not set
+ CONFIG_NLS_UTF8=m
+ # CONFIG_DLM is not set
+-CONFIG_INSTRUMENTATION=y
+-CONFIG_PROFILING=y
+-CONFIG_OPROFILE=m
+-CONFIG_KPROBES=y
+-# CONFIG_MARKERS is not set
+
+ #
+ # Kernel hacking
+@@ -965,6 +1025,7 @@
+ CONFIG_SCHED_DEBUG=y
+ # CONFIG_SCHEDSTATS is not set
+ # CONFIG_TIMER_STATS is not set
++# CONFIG_SLUB_STATS is not set
+ # CONFIG_DEBUG_RT_MUTEXES is not set
+ # CONFIG_RT_MUTEX_TESTER is not set
+ # CONFIG_DEBUG_SPINLOCK is not set
+@@ -981,9 +1042,10 @@
+ # CONFIG_DEBUG_LIST is not set
+ # CONFIG_DEBUG_SG is not set
+ CONFIG_FRAME_POINTER=y
+-CONFIG_FORCED_INLINING=y
+ # CONFIG_BOOT_PRINTK_DELAY is not set
+ # CONFIG_RCU_TORTURE_TEST is not set
++# CONFIG_KPROBES_SANITY_TEST is not set
++# CONFIG_BACKTRACE_SELF_TEST is not set
+ # CONFIG_LKDTM is not set
+ # CONFIG_FAULT_INJECTION is not set
+ # CONFIG_SAMPLES is not set
+@@ -1009,6 +1071,7 @@
+ CONFIG_AUDIT_GENERIC=y
+ CONFIG_ZLIB_INFLATE=y
+ CONFIG_ZLIB_DEFLATE=y
++CONFIG_GENERIC_ALLOCATOR=y
+ CONFIG_PLIST=y
+ CONFIG_HAS_IOMEM=y
+ CONFIG_HAS_IOPORT=y
+diff --exclude=.git -urN linux-2.6.25.6/arch/avr32/configs/atstk1004_defconfig avr32-2.6/arch/avr32/configs/atstk1004_defconfig
+--- linux-2.6.25.6/arch/avr32/configs/atstk1004_defconfig 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/avr32/configs/atstk1004_defconfig 2008-06-12 15:09:38.719815350 +0200
+@@ -1,7 +1,7 @@
+ #
+ # Automatically generated make config: don't edit
+-# Linux kernel version: 2.6.24-rc7
+-# Wed Jan 9 23:04:20 2008
++# Linux kernel version: 2.6.25.4
++# Wed Jun 11 15:37:49 2008
+ #
+ CONFIG_AVR32=y
+ CONFIG_GENERIC_GPIO=y
+@@ -13,10 +13,10 @@
+ CONFIG_GENERIC_IRQ_PROBE=y
+ CONFIG_RWSEM_GENERIC_SPINLOCK=y
+ CONFIG_GENERIC_TIME=y
++CONFIG_GENERIC_CLOCKEVENTS=y
+ # CONFIG_RWSEM_XCHGADD_ALGORITHM is not set
+ # CONFIG_ARCH_HAS_ILOG2_U32 is not set
+ # CONFIG_ARCH_HAS_ILOG2_U64 is not set
+-CONFIG_ARCH_SUPPORTS_OPROFILE=y
+ CONFIG_GENERIC_HWEIGHT=y
+ CONFIG_GENERIC_CALIBRATE_DELAY=y
+ CONFIG_GENERIC_BUG=y
+@@ -34,15 +34,15 @@
+ # CONFIG_POSIX_MQUEUE is not set
+ # CONFIG_BSD_PROCESS_ACCT is not set
+ # CONFIG_TASKSTATS is not set
+-# CONFIG_USER_NS is not set
+-# CONFIG_PID_NS is not set
+ # CONFIG_AUDIT is not set
+ # CONFIG_IKCONFIG is not set
+ CONFIG_LOG_BUF_SHIFT=14
+ # CONFIG_CGROUPS is not set
+-# CONFIG_FAIR_GROUP_SCHED is not set
++# CONFIG_GROUP_SCHED is not set
+ CONFIG_SYSFS_DEPRECATED=y
++CONFIG_SYSFS_DEPRECATED_V2=y
+ # CONFIG_RELAY is not set
++# CONFIG_NAMESPACES is not set
+ # CONFIG_BLK_DEV_INITRD is not set
+ CONFIG_CC_OPTIMIZE_FOR_SIZE=y
+ CONFIG_SYSCTL=y
+@@ -54,24 +54,37 @@
+ CONFIG_PRINTK=y
+ CONFIG_BUG=y
+ CONFIG_ELF_CORE=y
++# CONFIG_COMPAT_BRK is not set
+ # CONFIG_BASE_FULL is not set
+ # CONFIG_FUTEX is not set
+ # CONFIG_EPOLL is not set
+ # CONFIG_SIGNALFD is not set
++# CONFIG_TIMERFD is not set
+ # CONFIG_EVENTFD is not set
+ CONFIG_SHMEM=y
+ CONFIG_VM_EVENT_COUNTERS=y
+ # CONFIG_SLAB is not set
+ # CONFIG_SLUB is not set
+ CONFIG_SLOB=y
++# CONFIG_PROFILING is not set
++# CONFIG_MARKERS is not set
++CONFIG_HAVE_OPROFILE=y
++CONFIG_HAVE_KPROBES=y
++# CONFIG_HAVE_KRETPROBES is not set
++# CONFIG_PROC_PAGE_MONITOR is not set
+ # CONFIG_TINY_SHMEM is not set
+ CONFIG_BASE_SMALL=1
+ # CONFIG_MODULES is not set
+ # CONFIG_BLOCK is not set
++CONFIG_CLASSIC_RCU=y
+
+ #
+ # System Type and features
+ #
++# CONFIG_TICK_ONESHOT is not set
++# CONFIG_NO_HZ is not set
++# CONFIG_HIGH_RES_TIMERS is not set
+CONFIG_GENERIC_CLOCKEVENTS_BUILD=y
-+CONFIG_SUBARCH_AVR32B=y
-+CONFIG_MMU=y
-+CONFIG_PERFORMANCE_COUNTERS=y
-+CONFIG_PLATFORM_AT32AP=y
-+CONFIG_CPU_AT32AP700X=y
-+CONFIG_CPU_AT32AP7001=y
-+CONFIG_BOARD_ATSTK1000=y
-+# CONFIG_BOARD_ATNGW100 is not set
-+# CONFIG_BOARD_ATSTK1002 is not set
-+CONFIG_BOARD_ATSTK1003=y
-+# CONFIG_BOARD_ATSTK1004 is not set
-+# CONFIG_BOARD_ATSTK100X_CUSTOM is not set
-+# CONFIG_BOARD_ATSTK100X_SPI1 is not set
-+# CONFIG_BOARD_ATSTK1000_J2_LED is not set
-+# CONFIG_BOARD_ATSTK1000_J2_LED8 is not set
-+# CONFIG_BOARD_ATSTK1000_J2_RGB is not set
-+CONFIG_BOARD_ATSTK1000_EXTDAC=y
+ CONFIG_SUBARCH_AVR32B=y
+ CONFIG_MMU=y
+ CONFIG_PERFORMANCE_COUNTERS=y
+@@ -83,10 +96,14 @@
+ # CONFIG_BOARD_ATSTK1002 is not set
+ # CONFIG_BOARD_ATSTK1003 is not set
+ CONFIG_BOARD_ATSTK1004=y
++# CONFIG_BOARD_ATSTK1006 is not set
+ # CONFIG_BOARD_ATSTK100X_CUSTOM is not set
+ # CONFIG_BOARD_ATSTK100X_SPI1 is not set
+ # CONFIG_BOARD_ATSTK1000_J2_LED is not set
+ CONFIG_BOARD_ATSTK1000_EXTDAC=y
+# CONFIG_BOARD_ATSTK100X_ENABLE_AC97 is not set
+# CONFIG_BOARD_ATSTK1000_CF_HACKS is not set
+# CONFIG_BOARD_ATSTK100X_ENABLE_PSIF is not set
-+CONFIG_LOADER_U_BOOT=y
-+
-+#
-+# Atmel AVR32 AP options
-+#
-+# CONFIG_AP700X_32_BIT_SMC is not set
-+CONFIG_AP700X_16_BIT_SMC=y
-+# CONFIG_AP700X_8_BIT_SMC is not set
-+CONFIG_GPIO_DEV=y
-+CONFIG_LOAD_ADDRESS=0x10000000
-+CONFIG_ENTRY_ADDRESS=0x90000000
-+CONFIG_PHYS_OFFSET=0x10000000
-+CONFIG_PREEMPT_NONE=y
-+# CONFIG_PREEMPT_VOLUNTARY is not set
-+# CONFIG_PREEMPT is not set
-+# CONFIG_HAVE_ARCH_BOOTMEM_NODE is not set
-+# CONFIG_ARCH_HAVE_MEMORY_PRESENT is not set
-+# CONFIG_NEED_NODE_MEMMAP_SIZE is not set
-+CONFIG_ARCH_FLATMEM_ENABLE=y
-+# CONFIG_ARCH_DISCONTIGMEM_ENABLE is not set
-+# CONFIG_ARCH_SPARSEMEM_ENABLE is not set
-+CONFIG_SELECT_MEMORY_MODEL=y
-+CONFIG_FLATMEM_MANUAL=y
-+# CONFIG_DISCONTIGMEM_MANUAL is not set
-+# CONFIG_SPARSEMEM_MANUAL is not set
-+CONFIG_FLATMEM=y
-+CONFIG_FLAT_NODE_MEM_MAP=y
-+# CONFIG_SPARSEMEM_STATIC is not set
-+# CONFIG_SPARSEMEM_VMEMMAP_ENABLE is not set
-+CONFIG_SPLIT_PTLOCK_CPUS=4
-+# CONFIG_RESOURCES_64BIT is not set
-+CONFIG_ZONE_DMA_FLAG=0
-+CONFIG_VIRT_TO_BUS=y
-+# CONFIG_OWNERSHIP_TRACE is not set
-+CONFIG_NMI_DEBUGGING=y
+ CONFIG_LOADER_U_BOOT=y
+
+ #
+@@ -95,6 +112,7 @@
+ # CONFIG_AP700X_32_BIT_SMC is not set
+ CONFIG_AP700X_16_BIT_SMC=y
+ # CONFIG_AP700X_8_BIT_SMC is not set
++# CONFIG_GPIO_DEV is not set
+ CONFIG_LOAD_ADDRESS=0x10000000
+ CONFIG_ENTRY_ADDRESS=0x90000000
+ CONFIG_PHYS_OFFSET=0x10000000
+@@ -120,34 +138,26 @@
+ CONFIG_ZONE_DMA_FLAG=0
+ CONFIG_VIRT_TO_BUS=y
+ # CONFIG_OWNERSHIP_TRACE is not set
++# CONFIG_NMI_DEBUGGING is not set
+CONFIG_DW_DMAC=y
-+# CONFIG_HZ_100 is not set
-+CONFIG_HZ_250=y
-+# CONFIG_HZ_300 is not set
-+# CONFIG_HZ_1000 is not set
-+CONFIG_HZ=250
-+CONFIG_CMDLINE=""
-+
-+#
-+# Power management options
-+#
-+
-+#
-+# CPU Frequency scaling
-+#
-+CONFIG_CPU_FREQ=y
-+CONFIG_CPU_FREQ_TABLE=y
-+# CONFIG_CPU_FREQ_DEBUG is not set
-+# CONFIG_CPU_FREQ_STAT is not set
-+CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE=y
-+# CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE is not set
-+# CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND is not set
-+# CONFIG_CPU_FREQ_DEFAULT_GOV_CONSERVATIVE is not set
-+CONFIG_CPU_FREQ_GOV_PERFORMANCE=y
-+# CONFIG_CPU_FREQ_GOV_POWERSAVE is not set
-+CONFIG_CPU_FREQ_GOV_USERSPACE=y
-+CONFIG_CPU_FREQ_GOV_ONDEMAND=y
-+# CONFIG_CPU_FREQ_GOV_CONSERVATIVE is not set
-+CONFIG_CPU_FREQ_AT32AP=y
+ # CONFIG_HZ_100 is not set
+ CONFIG_HZ_250=y
+ # CONFIG_HZ_300 is not set
+ # CONFIG_HZ_1000 is not set
+ CONFIG_HZ=250
++# CONFIG_SCHED_HRTICK is not set
+ CONFIG_CMDLINE=""
+
+ #
+ # Power management options
+ #
++CONFIG_ARCH_SUSPEND_POSSIBLE=y
++# CONFIG_PM is not set
+
+ #
+ # CPU Frequency scaling
+ #
+-CONFIG_CPU_FREQ=y
+-CONFIG_CPU_FREQ_TABLE=y
+-# CONFIG_CPU_FREQ_DEBUG is not set
+-# CONFIG_CPU_FREQ_STAT is not set
+-CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE=y
+-# CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE is not set
+-# CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND is not set
+-# CONFIG_CPU_FREQ_DEFAULT_GOV_CONSERVATIVE is not set
+-CONFIG_CPU_FREQ_GOV_PERFORMANCE=y
+-# CONFIG_CPU_FREQ_GOV_POWERSAVE is not set
+-CONFIG_CPU_FREQ_GOV_USERSPACE=y
+-CONFIG_CPU_FREQ_GOV_ONDEMAND=y
+-# CONFIG_CPU_FREQ_GOV_CONSERVATIVE is not set
+-CONFIG_CPU_FREQ_AT32AP=y
++# CONFIG_CPU_FREQ is not set
+
+ #
+ # Bus options
+@@ -222,6 +232,7 @@
+ #
+ # CONFIG_NET_PKTGEN is not set
+ # CONFIG_HAMRADIO is not set
++# CONFIG_CAN is not set
+ # CONFIG_IRDA is not set
+ # CONFIG_BT is not set
+ # CONFIG_AF_RXRPC is not set
+@@ -321,6 +332,7 @@
+ # CONFIG_MTD_UBI is not set
+ # CONFIG_PARPORT is not set
+ # CONFIG_MISC_DEVICES is not set
++# CONFIG_HAVE_IDE is not set
+
+ #
+ # SCSI device support
+@@ -358,6 +370,7 @@
+ #
+ CONFIG_SERIAL_ATMEL=y
+ CONFIG_SERIAL_ATMEL_CONSOLE=y
++# CONFIG_SERIAL_ATMEL_PDC is not set
+ # CONFIG_SERIAL_ATMEL_TTYAT is not set
+ CONFIG_SERIAL_CORE=y
+ CONFIG_SERIAL_CORE_CONSOLE=y
+@@ -365,8 +378,6 @@
+ # CONFIG_LEGACY_PTYS is not set
+ # CONFIG_IPMI_HANDLER is not set
+ # CONFIG_HW_RANDOM is not set
+-# CONFIG_RTC is not set
+-# CONFIG_GEN_RTC is not set
+ # CONFIG_R3964 is not set
+ # CONFIG_TCG_TPM is not set
+ # CONFIG_I2C is not set
+@@ -389,9 +400,24 @@
+ # CONFIG_SPI_AT25 is not set
+ # CONFIG_SPI_SPIDEV is not set
+ # CONFIG_SPI_TLE62X0 is not set
++CONFIG_HAVE_GPIO_LIB=y
+
+#
-+# Bus options
++# GPIO Support
+#
-+# CONFIG_ARCH_SUPPORTS_MSI is not set
-+# CONFIG_PCCARD is not set
+
+#
-+# Executable file formats
++# I2C GPIO expanders:
+#
-+CONFIG_BINFMT_ELF=y
-+# CONFIG_BINFMT_MISC is not set
+
+#
-+# Networking
-+#
-+CONFIG_NET=y
-+
++# SPI GPIO expanders:
++#
++# CONFIG_GPIO_MCP23S08 is not set
+ # CONFIG_W1 is not set
+ # CONFIG_POWER_SUPPLY is not set
+ # CONFIG_HWMON is not set
++# CONFIG_THERMAL is not set
+ CONFIG_WATCHDOG=y
+ # CONFIG_WATCHDOG_NOWAYOUT is not set
+
+@@ -471,10 +497,6 @@
+ #
+ # NOTE: USB_STORAGE enables SCSI, and 'SCSI disk support'
+ #
+-
+-#
+-# USB Gadget Support
+-#
+ CONFIG_USB_GADGET=y
+ # CONFIG_USB_GADGET_DEBUG_FILES is not set
+ CONFIG_USB_GADGET_SELECTED=y
+@@ -499,7 +521,9 @@
+ # CONFIG_USB_FILE_STORAGE is not set
+ # CONFIG_USB_G_SERIAL is not set
+ # CONFIG_USB_MIDI_GADGET is not set
++# CONFIG_USB_G_PRINTER is not set
+ # CONFIG_MMC is not set
++# CONFIG_MEMSTICK is not set
+ # CONFIG_NEW_LEDS is not set
+ CONFIG_RTC_LIB=y
+ CONFIG_RTC_CLASS=y
+@@ -519,15 +543,17 @@
+ #
+ # SPI RTC drivers
+ #
+-# CONFIG_RTC_DRV_RS5C348 is not set
+ # CONFIG_RTC_DRV_MAX6902 is not set
++# CONFIG_RTC_DRV_R9701 is not set
++# CONFIG_RTC_DRV_RS5C348 is not set
+
+ #
+ # Platform RTC drivers
+ #
++# CONFIG_RTC_DRV_DS1511 is not set
+ # CONFIG_RTC_DRV_DS1553 is not set
+-# CONFIG_RTC_DRV_STK17TA8 is not set
+ # CONFIG_RTC_DRV_DS1742 is not set
++# CONFIG_RTC_DRV_STK17TA8 is not set
+ # CONFIG_RTC_DRV_M48T86 is not set
+ # CONFIG_RTC_DRV_M48T59 is not set
+ # CONFIG_RTC_DRV_V3020 is not set
+@@ -545,9 +571,9 @@
+ #
+ # File systems
+ #
++# CONFIG_DNOTIFY is not set
+ # CONFIG_INOTIFY is not set
+ # CONFIG_QUOTA is not set
+-# CONFIG_DNOTIFY is not set
+ # CONFIG_AUTOFS_FS is not set
+ # CONFIG_AUTOFS4_FS is not set
+ # CONFIG_FUSE_FS is not set
+@@ -580,7 +606,6 @@
+ # CONFIG_NETWORK_FILESYSTEMS is not set
+ # CONFIG_NLS is not set
+ # CONFIG_DLM is not set
+-# CONFIG_INSTRUMENTATION is not set
+
+ #
+ # Kernel hacking
+@@ -616,6 +641,7 @@
+ # CONFIG_LIBCRC32C is not set
+ CONFIG_ZLIB_INFLATE=y
+ CONFIG_ZLIB_DEFLATE=y
++CONFIG_GENERIC_ALLOCATOR=y
+ CONFIG_HAS_IOMEM=y
+ CONFIG_HAS_IOPORT=y
+ CONFIG_HAS_DMA=y
+diff --exclude=.git -urN linux-2.6.25.6/arch/avr32/configs/atstk1006_defconfig avr32-2.6/arch/avr32/configs/atstk1006_defconfig
+--- linux-2.6.25.6/arch/avr32/configs/atstk1006_defconfig 1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/arch/avr32/configs/atstk1006_defconfig 2008-06-12 15:09:38.719815350 +0200
+@@ -0,0 +1,1235 @@
++#
++# Automatically generated make config: don't edit
++# Linux kernel version: 2.6.25.4
++# Wed Jun 11 15:40:45 2008
++#
++CONFIG_AVR32=y
++CONFIG_GENERIC_GPIO=y
++CONFIG_GENERIC_HARDIRQS=y
++CONFIG_STACKTRACE_SUPPORT=y
++CONFIG_LOCKDEP_SUPPORT=y
++CONFIG_TRACE_IRQFLAGS_SUPPORT=y
++CONFIG_HARDIRQS_SW_RESEND=y
++CONFIG_GENERIC_IRQ_PROBE=y
++CONFIG_RWSEM_GENERIC_SPINLOCK=y
++CONFIG_GENERIC_TIME=y
++CONFIG_GENERIC_CLOCKEVENTS=y
++# CONFIG_RWSEM_XCHGADD_ALGORITHM is not set
++# CONFIG_ARCH_HAS_ILOG2_U32 is not set
++# CONFIG_ARCH_HAS_ILOG2_U64 is not set
++CONFIG_GENERIC_HWEIGHT=y
++CONFIG_GENERIC_CALIBRATE_DELAY=y
++CONFIG_GENERIC_BUG=y
++CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
++
++#
++# General setup
++#
++CONFIG_EXPERIMENTAL=y
++CONFIG_BROKEN_ON_SMP=y
++CONFIG_INIT_ENV_ARG_LIMIT=32
++CONFIG_LOCALVERSION=""
++# CONFIG_LOCALVERSION_AUTO is not set
++CONFIG_SWAP=y
++CONFIG_SYSVIPC=y
++CONFIG_SYSVIPC_SYSCTL=y
++CONFIG_POSIX_MQUEUE=y
++# CONFIG_BSD_PROCESS_ACCT is not set
++# CONFIG_TASKSTATS is not set
++# CONFIG_AUDIT is not set
++# CONFIG_IKCONFIG is not set
++CONFIG_LOG_BUF_SHIFT=14
++# CONFIG_CGROUPS is not set
++# CONFIG_GROUP_SCHED is not set
++CONFIG_SYSFS_DEPRECATED=y
++CONFIG_SYSFS_DEPRECATED_V2=y
++CONFIG_RELAY=y
++# CONFIG_NAMESPACES is not set
++CONFIG_BLK_DEV_INITRD=y
++CONFIG_INITRAMFS_SOURCE=""
++CONFIG_CC_OPTIMIZE_FOR_SIZE=y
++CONFIG_SYSCTL=y
++CONFIG_EMBEDDED=y
++# CONFIG_SYSCTL_SYSCALL is not set
++CONFIG_KALLSYMS=y
++# CONFIG_KALLSYMS_ALL is not set
++# CONFIG_KALLSYMS_EXTRA_PASS is not set
++CONFIG_HOTPLUG=y
++CONFIG_PRINTK=y
++CONFIG_BUG=y
++CONFIG_ELF_CORE=y
++# CONFIG_COMPAT_BRK is not set
++# CONFIG_BASE_FULL is not set
++CONFIG_FUTEX=y
++CONFIG_ANON_INODES=y
++CONFIG_EPOLL=y
++CONFIG_SIGNALFD=y
++CONFIG_TIMERFD=y
++CONFIG_EVENTFD=y
++CONFIG_SHMEM=y
++CONFIG_VM_EVENT_COUNTERS=y
++CONFIG_SLUB_DEBUG=y
++# CONFIG_SLAB is not set
++CONFIG_SLUB=y
++# CONFIG_SLOB is not set
++CONFIG_PROFILING=y
++# CONFIG_MARKERS is not set
++CONFIG_OPROFILE=m
++CONFIG_HAVE_OPROFILE=y
++CONFIG_KPROBES=y
++CONFIG_HAVE_KPROBES=y
++# CONFIG_HAVE_KRETPROBES is not set
++CONFIG_PROC_PAGE_MONITOR=y
++CONFIG_SLABINFO=y
++CONFIG_RT_MUTEXES=y
++# CONFIG_TINY_SHMEM is not set
++CONFIG_BASE_SMALL=1
++CONFIG_MODULES=y
++CONFIG_MODULE_UNLOAD=y
++# CONFIG_MODULE_FORCE_UNLOAD is not set
++# CONFIG_MODVERSIONS is not set
++# CONFIG_MODULE_SRCVERSION_ALL is not set
++# CONFIG_KMOD is not set
++CONFIG_BLOCK=y
++# CONFIG_LBD is not set
++# CONFIG_BLK_DEV_IO_TRACE is not set
++# CONFIG_LSF is not set
++# CONFIG_BLK_DEV_BSG is not set
++
++#
++# IO Schedulers
++#
++CONFIG_IOSCHED_NOOP=y
++# CONFIG_IOSCHED_AS is not set
++# CONFIG_IOSCHED_DEADLINE is not set
++CONFIG_IOSCHED_CFQ=y
++# CONFIG_DEFAULT_AS is not set
++# CONFIG_DEFAULT_DEADLINE is not set
++CONFIG_DEFAULT_CFQ=y
++# CONFIG_DEFAULT_NOOP is not set
++CONFIG_DEFAULT_IOSCHED="cfq"
++CONFIG_CLASSIC_RCU=y
++
++#
++# System Type and features
++#
++CONFIG_TICK_ONESHOT=y
++CONFIG_NO_HZ=y
++CONFIG_HIGH_RES_TIMERS=y
++CONFIG_GENERIC_CLOCKEVENTS_BUILD=y
++CONFIG_SUBARCH_AVR32B=y
++CONFIG_MMU=y
++CONFIG_PERFORMANCE_COUNTERS=y
++CONFIG_PLATFORM_AT32AP=y
++CONFIG_CPU_AT32AP700X=y
++CONFIG_CPU_AT32AP7000=y
++CONFIG_BOARD_ATSTK1000=y
++# CONFIG_BOARD_ATNGW100 is not set
++# CONFIG_BOARD_ATSTK1002 is not set
++# CONFIG_BOARD_ATSTK1003 is not set
++# CONFIG_BOARD_ATSTK1004 is not set
++CONFIG_BOARD_ATSTK1006=y
++# CONFIG_BOARD_ATSTK100X_CUSTOM is not set
++# CONFIG_BOARD_ATSTK100X_SPI1 is not set
++# CONFIG_BOARD_ATSTK1000_J2_LED is not set
++# CONFIG_BOARD_ATSTK1000_J2_LED8 is not set
++# CONFIG_BOARD_ATSTK1000_J2_RGB is not set
++CONFIG_BOARD_ATSTK1000_EXTDAC=y
++# CONFIG_BOARD_ATSTK100X_ENABLE_AC97 is not set
++# CONFIG_BOARD_ATSTK1000_CF_HACKS is not set
++# CONFIG_BOARD_ATSTK100X_ENABLE_PSIF is not set
++CONFIG_LOADER_U_BOOT=y
++
++#
++# Atmel AVR32 AP options
++#
++# CONFIG_AP700X_32_BIT_SMC is not set
++CONFIG_AP700X_16_BIT_SMC=y
++# CONFIG_AP700X_8_BIT_SMC is not set
++CONFIG_GPIO_DEV=y
++CONFIG_LOAD_ADDRESS=0x10000000
++CONFIG_ENTRY_ADDRESS=0x90000000
++CONFIG_PHYS_OFFSET=0x10000000
++CONFIG_PREEMPT_NONE=y
++# CONFIG_PREEMPT_VOLUNTARY is not set
++# CONFIG_PREEMPT is not set
++# CONFIG_HAVE_ARCH_BOOTMEM_NODE is not set
++# CONFIG_ARCH_HAVE_MEMORY_PRESENT is not set
++# CONFIG_NEED_NODE_MEMMAP_SIZE is not set
++CONFIG_ARCH_FLATMEM_ENABLE=y
++# CONFIG_ARCH_DISCONTIGMEM_ENABLE is not set
++# CONFIG_ARCH_SPARSEMEM_ENABLE is not set
++CONFIG_SELECT_MEMORY_MODEL=y
++CONFIG_FLATMEM_MANUAL=y
++# CONFIG_DISCONTIGMEM_MANUAL is not set
++# CONFIG_SPARSEMEM_MANUAL is not set
++CONFIG_FLATMEM=y
++CONFIG_FLAT_NODE_MEM_MAP=y
++# CONFIG_SPARSEMEM_STATIC is not set
++# CONFIG_SPARSEMEM_VMEMMAP_ENABLE is not set
++CONFIG_SPLIT_PTLOCK_CPUS=4
++# CONFIG_RESOURCES_64BIT is not set
++CONFIG_ZONE_DMA_FLAG=0
++CONFIG_VIRT_TO_BUS=y
++# CONFIG_OWNERSHIP_TRACE is not set
++CONFIG_NMI_DEBUGGING=y
++CONFIG_DW_DMAC=y
++# CONFIG_HZ_100 is not set
++CONFIG_HZ_250=y
++# CONFIG_HZ_300 is not set
++# CONFIG_HZ_1000 is not set
++CONFIG_HZ=250
++# CONFIG_SCHED_HRTICK is not set
++CONFIG_CMDLINE=""
++
++#
++# Power management options
++#
++CONFIG_ARCH_SUSPEND_POSSIBLE=y
++CONFIG_PM=y
++# CONFIG_PM_LEGACY is not set
++# CONFIG_PM_DEBUG is not set
++CONFIG_PM_SLEEP=y
++CONFIG_SUSPEND=y
++CONFIG_SUSPEND_FREEZER=y
++
++#
++# CPU Frequency scaling
++#
++CONFIG_CPU_FREQ=y
++CONFIG_CPU_FREQ_TABLE=y
++# CONFIG_CPU_FREQ_DEBUG is not set
++# CONFIG_CPU_FREQ_STAT is not set
++# CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE is not set
++# CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE is not set
++CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y
++# CONFIG_CPU_FREQ_DEFAULT_GOV_CONSERVATIVE is not set
++CONFIG_CPU_FREQ_GOV_PERFORMANCE=y
++# CONFIG_CPU_FREQ_GOV_POWERSAVE is not set
++CONFIG_CPU_FREQ_GOV_USERSPACE=y
++CONFIG_CPU_FREQ_GOV_ONDEMAND=y
++# CONFIG_CPU_FREQ_GOV_CONSERVATIVE is not set
++CONFIG_CPU_FREQ_AT32AP=y
++
++#
++# Bus options
++#
++# CONFIG_ARCH_SUPPORTS_MSI is not set
++# CONFIG_PCCARD is not set
++
++#
++# Executable file formats
++#
++CONFIG_BINFMT_ELF=y
++# CONFIG_BINFMT_MISC is not set
++
++#
++# Networking
++#
++CONFIG_NET=y
++
+#
+# Networking options
+#
+CONFIG_PACKET=y
+CONFIG_PACKET_MMAP=y
+CONFIG_UNIX=y
-+# CONFIG_NET_KEY is not set
++CONFIG_XFRM=y
++CONFIG_XFRM_USER=m
++# CONFIG_XFRM_SUB_POLICY is not set
++# CONFIG_XFRM_MIGRATE is not set
++# CONFIG_XFRM_STATISTICS is not set
++CONFIG_NET_KEY=m
++# CONFIG_NET_KEY_MIGRATE is not set
+CONFIG_INET=y
+# CONFIG_IP_MULTICAST is not set
+# CONFIG_IP_ADVANCED_ROUTER is not set
+CONFIG_IP_FIB_HASH=y
-+# CONFIG_IP_PNP is not set
-+# CONFIG_NET_IPIP is not set
-+# CONFIG_NET_IPGRE is not set
++CONFIG_IP_PNP=y
++CONFIG_IP_PNP_DHCP=y
++# CONFIG_IP_PNP_BOOTP is not set
++# CONFIG_IP_PNP_RARP is not set
++CONFIG_NET_IPIP=m
++CONFIG_NET_IPGRE=m
+# CONFIG_ARPD is not set
+# CONFIG_SYN_COOKIES is not set
-+# CONFIG_INET_AH is not set
-+# CONFIG_INET_ESP is not set
++CONFIG_INET_AH=m
++CONFIG_INET_ESP=m
+# CONFIG_INET_IPCOMP is not set
+# CONFIG_INET_XFRM_TUNNEL is not set
-+# CONFIG_INET_TUNNEL is not set
-+# CONFIG_INET_XFRM_MODE_TRANSPORT is not set
-+# CONFIG_INET_XFRM_MODE_TUNNEL is not set
-+# CONFIG_INET_XFRM_MODE_BEET is not set
++CONFIG_INET_TUNNEL=m
++CONFIG_INET_XFRM_MODE_TRANSPORT=m
++CONFIG_INET_XFRM_MODE_TUNNEL=m
++CONFIG_INET_XFRM_MODE_BEET=m
+# CONFIG_INET_LRO is not set
-+# CONFIG_INET_DIAG is not set
++CONFIG_INET_DIAG=y
++CONFIG_INET_TCP_DIAG=y
+# CONFIG_TCP_CONG_ADVANCED is not set
+CONFIG_TCP_CONG_CUBIC=y
+CONFIG_DEFAULT_TCP_CONG="cubic"
+# CONFIG_TCP_MD5SIG is not set
-+# CONFIG_IPV6 is not set
-+# CONFIG_INET6_XFRM_TUNNEL is not set
-+# CONFIG_INET6_TUNNEL is not set
-+# CONFIG_NETWORK_SECMARK is not set
-+# CONFIG_NETFILTER is not set
-+# CONFIG_IP_DCCP is not set
-+# CONFIG_IP_SCTP is not set
-+# CONFIG_TIPC is not set
-+# CONFIG_ATM is not set
-+# CONFIG_BRIDGE is not set
++CONFIG_IPV6=m
++# CONFIG_IPV6_PRIVACY is not set
++# CONFIG_IPV6_ROUTER_PREF is not set
++# CONFIG_IPV6_OPTIMISTIC_DAD is not set
++CONFIG_INET6_AH=m
++CONFIG_INET6_ESP=m
++CONFIG_INET6_IPCOMP=m
++# CONFIG_IPV6_MIP6 is not set
++CONFIG_INET6_XFRM_TUNNEL=m
++CONFIG_INET6_TUNNEL=m
++CONFIG_INET6_XFRM_MODE_TRANSPORT=m
++CONFIG_INET6_XFRM_MODE_TUNNEL=m
++CONFIG_INET6_XFRM_MODE_BEET=m
++# CONFIG_INET6_XFRM_MODE_ROUTEOPTIMIZATION is not set
++CONFIG_IPV6_SIT=m
++CONFIG_IPV6_TUNNEL=m
++# CONFIG_IPV6_MULTIPLE_TABLES is not set
++# CONFIG_NETWORK_SECMARK is not set
++# CONFIG_NETFILTER is not set
++# CONFIG_IP_DCCP is not set
++# CONFIG_IP_SCTP is not set
++# CONFIG_TIPC is not set
++# CONFIG_ATM is not set
++CONFIG_BRIDGE=m
+# CONFIG_VLAN_8021Q is not set
+# CONFIG_DECNET is not set
++CONFIG_LLC=m
+# CONFIG_LLC2 is not set
+# CONFIG_IPX is not set
+# CONFIG_ATALK is not set
+# CONFIG_NET_PKTGEN is not set
+# CONFIG_NET_TCPPROBE is not set
+# CONFIG_HAMRADIO is not set
++# CONFIG_CAN is not set
+# CONFIG_IRDA is not set
+# CONFIG_BT is not set
+# CONFIG_AF_RXRPC is not set
+# CONFIG_MTD_DOC2000 is not set
+# CONFIG_MTD_DOC2001 is not set
+# CONFIG_MTD_DOC2001PLUS is not set
-+# CONFIG_MTD_NAND is not set
++CONFIG_MTD_NAND=y
++# CONFIG_MTD_NAND_VERIFY_WRITE is not set
++# CONFIG_MTD_NAND_ECC_SMC is not set
++# CONFIG_MTD_NAND_MUSEUM_IDS is not set
++CONFIG_MTD_NAND_IDS=y
++# CONFIG_MTD_NAND_DISKONCHIP is not set
++CONFIG_MTD_NAND_ATMEL=y
++CONFIG_MTD_NAND_ATMEL_ECC_HW=y
++# CONFIG_MTD_NAND_ATMEL_ECC_SOFT is not set
++# CONFIG_MTD_NAND_ATMEL_ECC_NONE is not set
++# CONFIG_MTD_NAND_NANDSIM is not set
++# CONFIG_MTD_NAND_PLATFORM is not set
+# CONFIG_MTD_ONENAND is not set
+
+#
+# UBI - Unsorted block images
+#
-+# CONFIG_MTD_UBI is not set
++CONFIG_MTD_UBI=m
++CONFIG_MTD_UBI_WL_THRESHOLD=4096
++CONFIG_MTD_UBI_BEB_RESERVE=1
++CONFIG_MTD_UBI_GLUEBI=y
++
++#
++# UBI debugging options
++#
++# CONFIG_MTD_UBI_DEBUG is not set
+# CONFIG_PARPORT is not set
+CONFIG_BLK_DEV=y
+# CONFIG_BLK_DEV_COW_COMMON is not set
+CONFIG_BLK_DEV_RAM=m
+CONFIG_BLK_DEV_RAM_COUNT=16
+CONFIG_BLK_DEV_RAM_SIZE=4096
-+CONFIG_BLK_DEV_RAM_BLOCKSIZE=1024
++# CONFIG_BLK_DEV_XIP is not set
+# CONFIG_CDROM_PKTCDVD is not set
+# CONFIG_ATA_OVER_ETH is not set
+CONFIG_MISC_DEVICES=y
+CONFIG_ATMEL_TCB_CLKSRC_BLOCK=0
+# CONFIG_EEPROM_93CX6 is not set
+CONFIG_ATMEL_SSC=m
-+# CONFIG_IDE is not set
++# CONFIG_ENCLOSURE_SERVICES is not set
++# CONFIG_HAVE_IDE is not set
+
+#
+# SCSI device support
+# CONFIG_SCSI_ISCSI_ATTRS is not set
+# CONFIG_SCSI_SAS_LIBSAS is not set
+# CONFIG_SCSI_SRP_ATTRS is not set
-+CONFIG_SCSI_LOWLEVEL=y
-+# CONFIG_ISCSI_TCP is not set
-+# CONFIG_SCSI_DEBUG is not set
++# CONFIG_SCSI_LOWLEVEL is not set
+CONFIG_ATA=m
+# CONFIG_ATA_NONSTANDARD is not set
++# CONFIG_SATA_MV is not set
+CONFIG_PATA_AT32=m
+# CONFIG_PATA_PLATFORM is not set
+# CONFIG_MD is not set
+# CONFIG_BONDING is not set
+# CONFIG_MACVLAN is not set
+# CONFIG_EQUALIZER is not set
-+# CONFIG_TUN is not set
++CONFIG_TUN=m
+# CONFIG_VETH is not set
-+# CONFIG_NET_ETHERNET is not set
++CONFIG_PHYLIB=y
++
++#
++# MII PHY device drivers
++#
++# CONFIG_MARVELL_PHY is not set
++# CONFIG_DAVICOM_PHY is not set
++# CONFIG_QSEMI_PHY is not set
++# CONFIG_LXT_PHY is not set
++# CONFIG_CICADA_PHY is not set
++# CONFIG_VITESSE_PHY is not set
++# CONFIG_SMSC_PHY is not set
++# CONFIG_BROADCOM_PHY is not set
++# CONFIG_ICPLUS_PHY is not set
++# CONFIG_REALTEK_PHY is not set
++# CONFIG_FIXED_PHY is not set
++# CONFIG_MDIO_BITBANG is not set
++CONFIG_NET_ETHERNET=y
++# CONFIG_MII is not set
++CONFIG_MACB=y
++# CONFIG_ENC28J60 is not set
++# CONFIG_IBM_NEW_EMAC_ZMII is not set
++# CONFIG_IBM_NEW_EMAC_RGMII is not set
++# CONFIG_IBM_NEW_EMAC_TAH is not set
++# CONFIG_IBM_NEW_EMAC_EMAC4 is not set
++# CONFIG_B44 is not set
+# CONFIG_NETDEV_1000 is not set
+# CONFIG_NETDEV_10000 is not set
+
+# CONFIG_PPPOL2TP is not set
+# CONFIG_SLIP is not set
+CONFIG_SLHC=m
-+# CONFIG_SHAPER is not set
+# CONFIG_NETCONSOLE is not set
+# CONFIG_NETPOLL is not set
+# CONFIG_NET_POLL_CONTROLLER is not set
+CONFIG_INPUT_MOUSEDEV_SCREEN_X=1024
+CONFIG_INPUT_MOUSEDEV_SCREEN_Y=768
+# CONFIG_INPUT_JOYDEV is not set
-+# CONFIG_INPUT_EVDEV is not set
++CONFIG_INPUT_EVDEV=m
+# CONFIG_INPUT_EVBUG is not set
+
+#
+# CONFIG_LEGACY_PTYS is not set
+# CONFIG_IPMI_HANDLER is not set
+# CONFIG_HW_RANDOM is not set
-+# CONFIG_RTC is not set
-+# CONFIG_GEN_RTC is not set
+# CONFIG_R3964 is not set
+# CONFIG_RAW_DRIVER is not set
+# CONFIG_TCG_TPM is not set
+#
+# Miscellaneous I2C Chip support
+#
-+# CONFIG_SENSORS_DS1337 is not set
-+# CONFIG_SENSORS_DS1374 is not set
+# CONFIG_DS1682 is not set
+# CONFIG_SENSORS_EEPROM is not set
+# CONFIG_SENSORS_PCF8574 is not set
-+# CONFIG_SENSORS_PCA9539 is not set
++# CONFIG_PCF8575 is not set
+# CONFIG_SENSORS_PCF8591 is not set
++# CONFIG_TPS65010 is not set
+# CONFIG_SENSORS_MAX6875 is not set
+# CONFIG_SENSORS_TSL2550 is not set
+# CONFIG_I2C_DEBUG_CORE is not set
+# CONFIG_SPI_AT25 is not set
+CONFIG_SPI_SPIDEV=m
+# CONFIG_SPI_TLE62X0 is not set
++CONFIG_HAVE_GPIO_LIB=y
++
++#
++# GPIO Support
++#
++# CONFIG_DEBUG_GPIO is not set
++
++#
++# I2C GPIO expanders:
++#
++# CONFIG_GPIO_PCA953X is not set
++# CONFIG_GPIO_PCF857X is not set
++
++#
++# SPI GPIO expanders:
++#
++# CONFIG_GPIO_MCP23S08 is not set
+# CONFIG_W1 is not set
+# CONFIG_POWER_SUPPLY is not set
+# CONFIG_HWMON is not set
++# CONFIG_THERMAL is not set
+CONFIG_WATCHDOG=y
+# CONFIG_WATCHDOG_NOWAYOUT is not set
+
+#
+# CONFIG_VGASTATE is not set
+# CONFIG_VIDEO_OUTPUT_CONTROL is not set
-+# CONFIG_FB is not set
-+# CONFIG_BACKLIGHT_LCD_SUPPORT is not set
++CONFIG_FB=y
++# CONFIG_FIRMWARE_EDID is not set
++# CONFIG_FB_DDC is not set
++CONFIG_FB_CFB_FILLRECT=y
++CONFIG_FB_CFB_COPYAREA=y
++CONFIG_FB_CFB_IMAGEBLIT=y
++# CONFIG_FB_CFB_REV_PIXELS_IN_BYTE is not set
++# CONFIG_FB_SYS_FILLRECT is not set
++# CONFIG_FB_SYS_COPYAREA is not set
++# CONFIG_FB_SYS_IMAGEBLIT is not set
++# CONFIG_FB_SYS_FOPS is not set
++CONFIG_FB_DEFERRED_IO=y
++# CONFIG_FB_SVGALIB is not set
++# CONFIG_FB_MACMODES is not set
++# CONFIG_FB_BACKLIGHT is not set
++# CONFIG_FB_MODE_HELPERS is not set
++# CONFIG_FB_TILEBLITTING is not set
++
++#
++# Frame buffer hardware drivers
++#
++# CONFIG_FB_S1D13XXX is not set
++CONFIG_FB_ATMEL=y
++# CONFIG_FB_VIRTUAL is not set
++CONFIG_BACKLIGHT_LCD_SUPPORT=y
++CONFIG_LCD_CLASS_DEVICE=y
++CONFIG_LCD_LTV350QV=y
++# CONFIG_BACKLIGHT_CLASS_DEVICE is not set
+
+#
+# Display device support
+#
+# CONFIG_DISPLAY_SUPPORT is not set
++# CONFIG_LOGO is not set
+
+#
+# Sound
+CONFIG_SND_PCM_OSS=m
+CONFIG_SND_PCM_OSS_PLUGINS=y
+# CONFIG_SND_DYNAMIC_MINORS is not set
-+CONFIG_SND_SUPPORT_OLD_API=y
-+CONFIG_SND_VERBOSE_PROCFS=y
++# CONFIG_SND_SUPPORT_OLD_API is not set
++# CONFIG_SND_VERBOSE_PROCFS is not set
+# CONFIG_SND_VERBOSE_PRINTK is not set
+# CONFIG_SND_DEBUG is not set
+
+#
+
+#
++# ALSA SoC audio for Freescale SOCs
++#
++
++#
+# Open Sound System
+#
+# CONFIG_SOUND_PRIME is not set
+#
+# NOTE: USB_STORAGE enables SCSI, and 'SCSI disk support'
+#
-+
-+#
-+# USB Gadget Support
-+#
+CONFIG_USB_GADGET=y
+# CONFIG_USB_GADGET_DEBUG is not set
+# CONFIG_USB_GADGET_DEBUG_FILES is not set
-+CONFIG_USB_GADGET_DEBUG_FS=y
++# CONFIG_USB_GADGET_DEBUG_FS is not set
+CONFIG_USB_GADGET_SELECTED=y
+# CONFIG_USB_GADGET_AMD5536UDC is not set
+CONFIG_USB_GADGET_ATMEL_USBA=y
+# CONFIG_USB_FILE_STORAGE_TEST is not set
+CONFIG_USB_G_SERIAL=m
+# CONFIG_USB_MIDI_GADGET is not set
++# CONFIG_USB_G_PRINTER is not set
+CONFIG_MMC=y
+# CONFIG_MMC_DEBUG is not set
+# CONFIG_MMC_UNSAFE_RESUME is not set
+# MMC/SD Card Drivers
+#
+CONFIG_MMC_BLOCK=y
-+# CONFIG_MMC_BLOCK_BOUNCE is not set
++CONFIG_MMC_BLOCK_BOUNCE=y
+# CONFIG_SDIO_UART is not set
+
+#
+#
+CONFIG_MMC_ATMELMCI=y
+CONFIG_MMC_SPI=m
++# CONFIG_MEMSTICK is not set
+CONFIG_NEW_LEDS=y
-+CONFIG_LEDS_CLASS=y
++CONFIG_LEDS_CLASS=m
+
+#
+# LED drivers
+#
+CONFIG_LEDS_ATMEL_PWM=m
-+CONFIG_LEDS_GPIO=y
++CONFIG_LEDS_GPIO=m
+
+#
+# LED Triggers
+#
+CONFIG_LEDS_TRIGGERS=y
-+CONFIG_LEDS_TRIGGER_TIMER=y
-+CONFIG_LEDS_TRIGGER_HEARTBEAT=y
++CONFIG_LEDS_TRIGGER_TIMER=m
++CONFIG_LEDS_TRIGGER_HEARTBEAT=m
+CONFIG_RTC_LIB=y
+CONFIG_RTC_CLASS=y
+CONFIG_RTC_HCTOSYS=y
+# CONFIG_RTC_DRV_PCF8563 is not set
+# CONFIG_RTC_DRV_PCF8583 is not set
+# CONFIG_RTC_DRV_M41T80 is not set
++# CONFIG_RTC_DRV_S35390A is not set
+
+#
+# SPI RTC drivers
+#
-+# CONFIG_RTC_DRV_RS5C348 is not set
+# CONFIG_RTC_DRV_MAX6902 is not set
++# CONFIG_RTC_DRV_R9701 is not set
++# CONFIG_RTC_DRV_RS5C348 is not set
+
+#
+# Platform RTC drivers
+#
++# CONFIG_RTC_DRV_DS1511 is not set
+# CONFIG_RTC_DRV_DS1553 is not set
-+# CONFIG_RTC_DRV_STK17TA8 is not set
+# CONFIG_RTC_DRV_DS1742 is not set
++# CONFIG_RTC_DRV_STK17TA8 is not set
+# CONFIG_RTC_DRV_M48T86 is not set
+# CONFIG_RTC_DRV_M48T59 is not set
+# CONFIG_RTC_DRV_V3020 is not set
+#
+# Userspace I/O
+#
-+CONFIG_UIO=m
++# CONFIG_UIO is not set
+
+#
+# File systems
+#
-+CONFIG_EXT2_FS=m
++CONFIG_EXT2_FS=y
+# CONFIG_EXT2_FS_XATTR is not set
+# CONFIG_EXT2_FS_XIP is not set
-+CONFIG_EXT3_FS=m
++CONFIG_EXT3_FS=y
+# CONFIG_EXT3_FS_XATTR is not set
+# CONFIG_EXT4DEV_FS is not set
-+CONFIG_JBD=m
++CONFIG_JBD=y
+# CONFIG_JBD_DEBUG is not set
+# CONFIG_REISERFS_FS is not set
+# CONFIG_JFS_FS is not set
+# CONFIG_XFS_FS is not set
+# CONFIG_GFS2_FS is not set
+# CONFIG_OCFS2_FS is not set
-+# CONFIG_MINIX_FS is not set
-+# CONFIG_ROMFS_FS is not set
++# CONFIG_DNOTIFY is not set
+CONFIG_INOTIFY=y
+CONFIG_INOTIFY_USER=y
+# CONFIG_QUOTA is not set
-+# CONFIG_DNOTIFY is not set
+# CONFIG_AUTOFS_FS is not set
+# CONFIG_AUTOFS4_FS is not set
+CONFIG_FUSE_FS=m
+# CONFIG_EFS_FS is not set
+CONFIG_JFFS2_FS=y
+CONFIG_JFFS2_FS_DEBUG=0
-+CONFIG_JFFS2_FS_WRITEBUFFER=y
-+# CONFIG_JFFS2_FS_WBUF_VERIFY is not set
++# CONFIG_JFFS2_FS_WRITEBUFFER is not set
+# CONFIG_JFFS2_SUMMARY is not set
+# CONFIG_JFFS2_FS_XATTR is not set
+# CONFIG_JFFS2_COMPRESSION_OPTIONS is not set
+# CONFIG_JFFS2_RUBIN is not set
+# CONFIG_CRAMFS is not set
+# CONFIG_VXFS_FS is not set
++CONFIG_MINIX_FS=m
+# CONFIG_HPFS_FS is not set
+# CONFIG_QNX4FS_FS is not set
++# CONFIG_ROMFS_FS is not set
+# CONFIG_SYSV_FS is not set
+# CONFIG_UFS_FS is not set
-+# CONFIG_NETWORK_FILESYSTEMS is not set
++CONFIG_NETWORK_FILESYSTEMS=y
++CONFIG_NFS_FS=y
++CONFIG_NFS_V3=y
++# CONFIG_NFS_V3_ACL is not set
++# CONFIG_NFS_V4 is not set
++# CONFIG_NFS_DIRECTIO is not set
++# CONFIG_NFSD is not set
++CONFIG_ROOT_NFS=y
++CONFIG_LOCKD=y
++CONFIG_LOCKD_V4=y
++CONFIG_NFS_COMMON=y
++CONFIG_SUNRPC=y
++# CONFIG_SUNRPC_BIND34 is not set
++# CONFIG_RPCSEC_GSS_KRB5 is not set
++# CONFIG_RPCSEC_GSS_SPKM3 is not set
++# CONFIG_SMB_FS is not set
++# CONFIG_CIFS is not set
++# CONFIG_NCP_FS is not set
++# CONFIG_CODA_FS is not set
++# CONFIG_AFS_FS is not set
+
+#
+# Partition Types
+# CONFIG_NLS_KOI8_U is not set
+CONFIG_NLS_UTF8=m
+# CONFIG_DLM is not set
-+CONFIG_INSTRUMENTATION=y
-+CONFIG_PROFILING=y
-+CONFIG_OPROFILE=m
-+CONFIG_KPROBES=y
-+# CONFIG_MARKERS is not set
+
+#
+# Kernel hacking
+CONFIG_SCHED_DEBUG=y
+# CONFIG_SCHEDSTATS is not set
+# CONFIG_TIMER_STATS is not set
++# CONFIG_SLUB_DEBUG_ON is not set
++# CONFIG_SLUB_STATS is not set
+# CONFIG_DEBUG_RT_MUTEXES is not set
+# CONFIG_RT_MUTEX_TESTER is not set
+# CONFIG_DEBUG_SPINLOCK is not set
+# CONFIG_DEBUG_LIST is not set
+# CONFIG_DEBUG_SG is not set
+CONFIG_FRAME_POINTER=y
-+CONFIG_FORCED_INLINING=y
+# CONFIG_BOOT_PRINTK_DELAY is not set
+# CONFIG_RCU_TORTURE_TEST is not set
++# CONFIG_KPROBES_SANITY_TEST is not set
++# CONFIG_BACKTRACE_SELF_TEST is not set
+# CONFIG_LKDTM is not set
+# CONFIG_FAULT_INJECTION is not set
+# CONFIG_SAMPLES is not set
+# CONFIG_KEYS is not set
+# CONFIG_SECURITY is not set
+# CONFIG_SECURITY_FILE_CAPABILITIES is not set
-+# CONFIG_CRYPTO is not set
++CONFIG_CRYPTO=y
++CONFIG_CRYPTO_ALGAPI=m
++CONFIG_CRYPTO_AEAD=m
++CONFIG_CRYPTO_BLKCIPHER=m
++# CONFIG_CRYPTO_SEQIV is not set
++CONFIG_CRYPTO_HASH=m
++CONFIG_CRYPTO_MANAGER=m
++CONFIG_CRYPTO_HMAC=m
++# CONFIG_CRYPTO_XCBC is not set
++# CONFIG_CRYPTO_NULL is not set
++# CONFIG_CRYPTO_MD4 is not set
++CONFIG_CRYPTO_MD5=m
++CONFIG_CRYPTO_SHA1=m
++# CONFIG_CRYPTO_SHA256 is not set
++# CONFIG_CRYPTO_SHA512 is not set
++# CONFIG_CRYPTO_WP512 is not set
++# CONFIG_CRYPTO_TGR192 is not set
++# CONFIG_CRYPTO_GF128MUL is not set
++# CONFIG_CRYPTO_ECB is not set
++CONFIG_CRYPTO_CBC=m
++# CONFIG_CRYPTO_PCBC is not set
++# CONFIG_CRYPTO_LRW is not set
++# CONFIG_CRYPTO_XTS is not set
++# CONFIG_CRYPTO_CTR is not set
++# CONFIG_CRYPTO_GCM is not set
++# CONFIG_CRYPTO_CCM is not set
++# CONFIG_CRYPTO_CRYPTD is not set
++CONFIG_CRYPTO_DES=m
++# CONFIG_CRYPTO_FCRYPT is not set
++# CONFIG_CRYPTO_BLOWFISH is not set
++# CONFIG_CRYPTO_TWOFISH is not set
++# CONFIG_CRYPTO_SERPENT is not set
++# CONFIG_CRYPTO_AES is not set
++# CONFIG_CRYPTO_CAST5 is not set
++# CONFIG_CRYPTO_CAST6 is not set
++# CONFIG_CRYPTO_TEA is not set
++# CONFIG_CRYPTO_ARC4 is not set
++# CONFIG_CRYPTO_KHAZAD is not set
++# CONFIG_CRYPTO_ANUBIS is not set
++# CONFIG_CRYPTO_SEED is not set
++# CONFIG_CRYPTO_SALSA20 is not set
++CONFIG_CRYPTO_DEFLATE=m
++# CONFIG_CRYPTO_MICHAEL_MIC is not set
++# CONFIG_CRYPTO_CRC32C is not set
++# CONFIG_CRYPTO_CAMELLIA is not set
++# CONFIG_CRYPTO_TEST is not set
++CONFIG_CRYPTO_AUTHENC=m
++# CONFIG_CRYPTO_LZO is not set
++# CONFIG_CRYPTO_HW is not set
+
+#
+# Library routines
+CONFIG_CRC32=y
+CONFIG_CRC7=m
+# CONFIG_LIBCRC32C is not set
-+CONFIG_AUDIT_GENERIC=y
+CONFIG_ZLIB_INFLATE=y
+CONFIG_ZLIB_DEFLATE=y
++CONFIG_GENERIC_ALLOCATOR=y
+CONFIG_PLIST=y
+CONFIG_HAS_IOMEM=y
+CONFIG_HAS_IOPORT=y
+CONFIG_HAS_DMA=y
---- /dev/null
-+++ b/arch/avr32/configs/atstk1004_defconfig
-@@ -0,0 +1,639 @@
-+#
-+# Automatically generated make config: don't edit
-+# Linux kernel version: 2.6.24
-+# Thu Mar 6 12:51:05 2008
-+#
-+CONFIG_AVR32=y
-+CONFIG_GENERIC_GPIO=y
-+CONFIG_GENERIC_HARDIRQS=y
-+CONFIG_STACKTRACE_SUPPORT=y
-+CONFIG_LOCKDEP_SUPPORT=y
-+CONFIG_TRACE_IRQFLAGS_SUPPORT=y
-+CONFIG_HARDIRQS_SW_RESEND=y
-+CONFIG_GENERIC_IRQ_PROBE=y
-+CONFIG_RWSEM_GENERIC_SPINLOCK=y
-+CONFIG_GENERIC_TIME=y
-+CONFIG_GENERIC_CLOCKEVENTS=y
-+# CONFIG_RWSEM_XCHGADD_ALGORITHM is not set
-+# CONFIG_ARCH_HAS_ILOG2_U32 is not set
-+# CONFIG_ARCH_HAS_ILOG2_U64 is not set
-+CONFIG_ARCH_SUPPORTS_OPROFILE=y
-+CONFIG_GENERIC_HWEIGHT=y
-+CONFIG_GENERIC_CALIBRATE_DELAY=y
-+CONFIG_GENERIC_BUG=y
-+CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
+diff --exclude=.git -urN linux-2.6.25.6/arch/avr32/drivers/dw-dmac.c avr32-2.6/arch/avr32/drivers/dw-dmac.c
+--- linux-2.6.25.6/arch/avr32/drivers/dw-dmac.c 1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/arch/avr32/drivers/dw-dmac.c 2008-06-12 15:09:38.719815350 +0200
+@@ -0,0 +1,761 @@
++/*
++ * Driver for the Synopsys DesignWare DMA Controller
++ *
++ * Copyright (C) 2005-2006 Atmel Corporation
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 as
++ * published by the Free Software Foundation.
++ */
++#include <linux/clk.h>
++#include <linux/device.h>
++#include <linux/dma-mapping.h>
++#include <linux/dmapool.h>
++#include <linux/init.h>
++#include <linux/interrupt.h>
++#include <linux/module.h>
++#include <linux/platform_device.h>
+
-+#
-+# General setup
-+#
-+CONFIG_EXPERIMENTAL=y
-+CONFIG_BROKEN_ON_SMP=y
-+CONFIG_INIT_ENV_ARG_LIMIT=32
-+CONFIG_LOCALVERSION=""
-+# CONFIG_LOCALVERSION_AUTO is not set
-+# CONFIG_SYSVIPC is not set
-+# CONFIG_POSIX_MQUEUE is not set
-+# CONFIG_BSD_PROCESS_ACCT is not set
-+# CONFIG_TASKSTATS is not set
-+# CONFIG_USER_NS is not set
-+# CONFIG_PID_NS is not set
-+# CONFIG_AUDIT is not set
-+# CONFIG_IKCONFIG is not set
-+CONFIG_LOG_BUF_SHIFT=14
-+# CONFIG_CGROUPS is not set
-+# CONFIG_FAIR_GROUP_SCHED is not set
-+CONFIG_SYSFS_DEPRECATED=y
-+# CONFIG_RELAY is not set
-+# CONFIG_BLK_DEV_INITRD is not set
-+CONFIG_CC_OPTIMIZE_FOR_SIZE=y
-+CONFIG_SYSCTL=y
-+CONFIG_EMBEDDED=y
-+# CONFIG_SYSCTL_SYSCALL is not set
-+CONFIG_KALLSYMS=y
-+# CONFIG_KALLSYMS_EXTRA_PASS is not set
-+CONFIG_HOTPLUG=y
-+CONFIG_PRINTK=y
-+CONFIG_BUG=y
-+CONFIG_ELF_CORE=y
-+# CONFIG_BASE_FULL is not set
-+# CONFIG_FUTEX is not set
-+# CONFIG_EPOLL is not set
-+# CONFIG_SIGNALFD is not set
-+# CONFIG_EVENTFD is not set
-+CONFIG_SHMEM=y
-+CONFIG_VM_EVENT_COUNTERS=y
-+# CONFIG_SLAB is not set
-+# CONFIG_SLUB is not set
-+CONFIG_SLOB=y
-+# CONFIG_TINY_SHMEM is not set
-+CONFIG_BASE_SMALL=1
-+# CONFIG_MODULES is not set
-+# CONFIG_BLOCK is not set
++#include <asm/dma-controller.h>
++#include <asm/io.h>
+
-+#
-+# System Type and features
-+#
-+CONFIG_TICK_ONESHOT=y
-+CONFIG_NO_HZ=y
-+CONFIG_HIGH_RES_TIMERS=y
-+CONFIG_GENERIC_CLOCKEVENTS_BUILD=y
-+CONFIG_SUBARCH_AVR32B=y
-+CONFIG_MMU=y
-+CONFIG_PERFORMANCE_COUNTERS=y
-+CONFIG_PLATFORM_AT32AP=y
-+CONFIG_CPU_AT32AP700X=y
-+CONFIG_CPU_AT32AP7002=y
-+CONFIG_BOARD_ATSTK1000=y
-+# CONFIG_BOARD_ATNGW100 is not set
-+# CONFIG_BOARD_ATSTK1002 is not set
-+# CONFIG_BOARD_ATSTK1003 is not set
-+CONFIG_BOARD_ATSTK1004=y
-+# CONFIG_BOARD_ATSTK100X_CUSTOM is not set
-+# CONFIG_BOARD_ATSTK100X_SPI1 is not set
-+# CONFIG_BOARD_ATSTK1000_J2_LED is not set
-+CONFIG_BOARD_ATSTK1000_EXTDAC=y
-+# CONFIG_BOARD_ATSTK100X_ENABLE_AC97 is not set
-+# CONFIG_BOARD_ATSTK1000_CF_HACKS is not set
-+# CONFIG_BOARD_ATSTK100X_ENABLE_PSIF is not set
-+CONFIG_LOADER_U_BOOT=y
++#include "dw-dmac.h"
+
-+#
-+# Atmel AVR32 AP options
-+#
-+# CONFIG_AP700X_32_BIT_SMC is not set
-+CONFIG_AP700X_16_BIT_SMC=y
-+# CONFIG_AP700X_8_BIT_SMC is not set
-+# CONFIG_GPIO_DEV is not set
-+CONFIG_LOAD_ADDRESS=0x10000000
-+CONFIG_ENTRY_ADDRESS=0x90000000
-+CONFIG_PHYS_OFFSET=0x10000000
-+CONFIG_PREEMPT_NONE=y
-+# CONFIG_PREEMPT_VOLUNTARY is not set
-+# CONFIG_PREEMPT is not set
-+# CONFIG_HAVE_ARCH_BOOTMEM_NODE is not set
-+# CONFIG_ARCH_HAVE_MEMORY_PRESENT is not set
-+# CONFIG_NEED_NODE_MEMMAP_SIZE is not set
-+CONFIG_ARCH_FLATMEM_ENABLE=y
-+# CONFIG_ARCH_DISCONTIGMEM_ENABLE is not set
-+# CONFIG_ARCH_SPARSEMEM_ENABLE is not set
-+CONFIG_SELECT_MEMORY_MODEL=y
-+CONFIG_FLATMEM_MANUAL=y
-+# CONFIG_DISCONTIGMEM_MANUAL is not set
-+# CONFIG_SPARSEMEM_MANUAL is not set
-+CONFIG_FLATMEM=y
-+CONFIG_FLAT_NODE_MEM_MAP=y
-+# CONFIG_SPARSEMEM_STATIC is not set
-+# CONFIG_SPARSEMEM_VMEMMAP_ENABLE is not set
-+CONFIG_SPLIT_PTLOCK_CPUS=4
-+# CONFIG_RESOURCES_64BIT is not set
-+CONFIG_ZONE_DMA_FLAG=0
-+CONFIG_VIRT_TO_BUS=y
-+# CONFIG_OWNERSHIP_TRACE is not set
-+# CONFIG_NMI_DEBUGGING is not set
-+# CONFIG_DW_DMAC is not set
-+# CONFIG_HZ_100 is not set
-+CONFIG_HZ_250=y
-+# CONFIG_HZ_300 is not set
-+# CONFIG_HZ_1000 is not set
-+CONFIG_HZ=250
-+CONFIG_CMDLINE=""
++#define DMAC_NR_CHANNELS 3
++#define DMAC_MAX_BLOCKSIZE 4095
+
-+#
-+# Power management options
-+#
++enum {
++ CH_STATE_FREE = 0,
++ CH_STATE_ALLOCATED,
++ CH_STATE_BUSY,
++};
+
-+#
-+# CPU Frequency scaling
-+#
-+CONFIG_CPU_FREQ=y
-+CONFIG_CPU_FREQ_TABLE=y
-+# CONFIG_CPU_FREQ_DEBUG is not set
-+# CONFIG_CPU_FREQ_STAT is not set
-+CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE=y
-+# CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE is not set
-+# CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND is not set
-+# CONFIG_CPU_FREQ_DEFAULT_GOV_CONSERVATIVE is not set
-+CONFIG_CPU_FREQ_GOV_PERFORMANCE=y
-+# CONFIG_CPU_FREQ_GOV_POWERSAVE is not set
-+CONFIG_CPU_FREQ_GOV_USERSPACE=y
-+CONFIG_CPU_FREQ_GOV_ONDEMAND=y
-+# CONFIG_CPU_FREQ_GOV_CONSERVATIVE is not set
-+CONFIG_CPU_FREQ_AT32AP=y
++struct dw_dma_lli {
++ dma_addr_t sar;
++ dma_addr_t dar;
++ dma_addr_t llp;
++ u32 ctllo;
++ u32 ctlhi;
++ u32 sstat;
++ u32 dstat;
++};
+
-+#
-+# Bus options
-+#
-+# CONFIG_ARCH_SUPPORTS_MSI is not set
-+# CONFIG_PCCARD is not set
++struct dw_dma_block {
++ struct dw_dma_lli *lli_vaddr;
++ dma_addr_t lli_dma_addr;
++};
+
-+#
-+# Executable file formats
-+#
-+CONFIG_BINFMT_ELF=y
-+# CONFIG_BINFMT_MISC is not set
++struct dw_dma_channel {
++ unsigned int state;
++ int is_cyclic;
++ struct dma_request_sg *req_sg;
++ struct dma_request_cyclic *req_cyclic;
++ unsigned int nr_blocks;
++ int direction;
++ struct dw_dma_block *block;
++};
+
-+#
-+# Networking
-+#
-+CONFIG_NET=y
++struct dw_dma_controller {
++ spinlock_t lock;
++ void * __iomem regs;
++ struct dma_pool *lli_pool;
++ struct clk *hclk;
++ struct dma_controller dma;
++ struct dw_dma_channel channel[DMAC_NR_CHANNELS];
++};
++#define to_dw_dmac(dmac) container_of(dmac, struct dw_dma_controller, dma)
+
-+#
-+# Networking options
-+#
-+CONFIG_PACKET=y
-+CONFIG_PACKET_MMAP=y
-+CONFIG_UNIX=y
-+# CONFIG_NET_KEY is not set
-+CONFIG_INET=y
-+# CONFIG_IP_MULTICAST is not set
-+# CONFIG_IP_ADVANCED_ROUTER is not set
-+CONFIG_IP_FIB_HASH=y
-+# CONFIG_IP_PNP is not set
-+# CONFIG_NET_IPIP is not set
-+# CONFIG_NET_IPGRE is not set
-+# CONFIG_ARPD is not set
-+# CONFIG_SYN_COOKIES is not set
-+# CONFIG_INET_AH is not set
-+# CONFIG_INET_ESP is not set
-+# CONFIG_INET_IPCOMP is not set
-+# CONFIG_INET_XFRM_TUNNEL is not set
-+# CONFIG_INET_TUNNEL is not set
-+# CONFIG_INET_XFRM_MODE_TRANSPORT is not set
-+# CONFIG_INET_XFRM_MODE_TUNNEL is not set
-+# CONFIG_INET_XFRM_MODE_BEET is not set
-+# CONFIG_INET_LRO is not set
-+# CONFIG_INET_DIAG is not set
-+# CONFIG_TCP_CONG_ADVANCED is not set
-+CONFIG_TCP_CONG_CUBIC=y
-+CONFIG_DEFAULT_TCP_CONG="cubic"
-+# CONFIG_TCP_MD5SIG is not set
-+# CONFIG_IPV6 is not set
-+# CONFIG_INET6_XFRM_TUNNEL is not set
-+# CONFIG_INET6_TUNNEL is not set
-+# CONFIG_NETWORK_SECMARK is not set
-+# CONFIG_NETFILTER is not set
-+# CONFIG_IP_DCCP is not set
-+# CONFIG_IP_SCTP is not set
-+# CONFIG_TIPC is not set
-+# CONFIG_ATM is not set
-+# CONFIG_BRIDGE is not set
-+# CONFIG_VLAN_8021Q is not set
-+# CONFIG_DECNET is not set
-+# CONFIG_LLC2 is not set
-+# CONFIG_IPX is not set
-+# CONFIG_ATALK is not set
-+# CONFIG_X25 is not set
-+# CONFIG_LAPB is not set
-+# CONFIG_ECONET is not set
-+# CONFIG_WAN_ROUTER is not set
-+# CONFIG_NET_SCHED is not set
++#define dmac_writel_hi(dmac, reg, value) \
++ __raw_writel((value), (dmac)->regs + DW_DMAC_##reg + 4)
++#define dmac_readl_hi(dmac, reg) \
++ __raw_readl((dmac)->regs + DW_DMAC_##reg + 4)
++#define dmac_writel_lo(dmac, reg, value) \
++ __raw_writel((value), (dmac)->regs + DW_DMAC_##reg)
++#define dmac_readl_lo(dmac, reg) \
++ __raw_readl((dmac)->regs + DW_DMAC_##reg)
++#define dmac_chan_writel_hi(dmac, chan, reg, value) \
++ __raw_writel((value), ((dmac)->regs + 0x58 * (chan) \
++ + DW_DMAC_CHAN_##reg + 4))
++#define dmac_chan_readl_hi(dmac, chan, reg) \
++ __raw_readl((dmac)->regs + 0x58 * (chan) + DW_DMAC_CHAN_##reg + 4)
++#define dmac_chan_writel_lo(dmac, chan, reg, value) \
++ __raw_writel((value), (dmac)->regs + 0x58 * (chan) + DW_DMAC_CHAN_##reg)
++#define dmac_chan_readl_lo(dmac, chan, reg) \
++ __raw_readl((dmac)->regs + 0x58 * (chan) + DW_DMAC_CHAN_##reg)
++#define set_channel_bit(dmac, reg, chan) \
++ dmac_writel_lo(dmac, reg, (1 << (chan)) | (1 << ((chan) + 8)))
++#define clear_channel_bit(dmac, reg, chan) \
++ dmac_writel_lo(dmac, reg, (0 << (chan)) | (1 << ((chan) + 8)))
+
-+#
-+# Network testing
-+#
-+# CONFIG_NET_PKTGEN is not set
-+# CONFIG_HAMRADIO is not set
-+# CONFIG_IRDA is not set
-+# CONFIG_BT is not set
-+# CONFIG_AF_RXRPC is not set
++static int dmac_alloc_channel(struct dma_controller *_dmac)
++{
++ struct dw_dma_controller *dmac = to_dw_dmac(_dmac);
++ struct dw_dma_channel *chan;
++ unsigned long flags;
++ int i;
+
-+#
-+# Wireless
-+#
-+# CONFIG_CFG80211 is not set
-+# CONFIG_WIRELESS_EXT is not set
-+# CONFIG_MAC80211 is not set
-+# CONFIG_IEEE80211 is not set
-+# CONFIG_RFKILL is not set
-+# CONFIG_NET_9P is not set
++ spin_lock_irqsave(&dmac->lock, flags);
++ for (i = 0; i < DMAC_NR_CHANNELS; i++)
++ if (dmac->channel[i].state == CH_STATE_FREE)
++ break;
+
-+#
-+# Device Drivers
-+#
++ if (i < DMAC_NR_CHANNELS) {
++ chan = &dmac->channel[i];
++ chan->state = CH_STATE_ALLOCATED;
++ } else {
++ i = -EBUSY;
++ }
+
-+#
-+# Generic Driver Options
-+#
-+CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug"
-+CONFIG_STANDALONE=y
-+# CONFIG_PREVENT_FIRMWARE_BUILD is not set
-+# CONFIG_FW_LOADER is not set
-+# CONFIG_SYS_HYPERVISOR is not set
-+# CONFIG_CONNECTOR is not set
-+CONFIG_MTD=y
-+# CONFIG_MTD_DEBUG is not set
-+# CONFIG_MTD_CONCAT is not set
-+CONFIG_MTD_PARTITIONS=y
-+# CONFIG_MTD_REDBOOT_PARTS is not set
-+CONFIG_MTD_CMDLINE_PARTS=y
++ spin_unlock_irqrestore(&dmac->lock, flags);
+
-+#
-+# User Modules And Translation Layers
-+#
-+CONFIG_MTD_CHAR=y
-+# CONFIG_MTD_OOPS is not set
++ return i;
++}
+
-+#
-+# RAM/ROM/Flash chip drivers
-+#
-+CONFIG_MTD_CFI=y
-+# CONFIG_MTD_JEDECPROBE is not set
-+CONFIG_MTD_GEN_PROBE=y
-+# CONFIG_MTD_CFI_ADV_OPTIONS is not set
-+CONFIG_MTD_MAP_BANK_WIDTH_1=y
-+CONFIG_MTD_MAP_BANK_WIDTH_2=y
-+CONFIG_MTD_MAP_BANK_WIDTH_4=y
-+# CONFIG_MTD_MAP_BANK_WIDTH_8 is not set
-+# CONFIG_MTD_MAP_BANK_WIDTH_16 is not set
-+# CONFIG_MTD_MAP_BANK_WIDTH_32 is not set
-+CONFIG_MTD_CFI_I1=y
-+CONFIG_MTD_CFI_I2=y
-+# CONFIG_MTD_CFI_I4 is not set
-+# CONFIG_MTD_CFI_I8 is not set
-+# CONFIG_MTD_CFI_INTELEXT is not set
-+CONFIG_MTD_CFI_AMDSTD=y
-+# CONFIG_MTD_CFI_STAA is not set
-+CONFIG_MTD_CFI_UTIL=y
-+# CONFIG_MTD_RAM is not set
-+# CONFIG_MTD_ROM is not set
-+# CONFIG_MTD_ABSENT is not set
++static void dmac_release_channel(struct dma_controller *_dmac, int channel)
++{
++ struct dw_dma_controller *dmac = to_dw_dmac(_dmac);
+
-+#
-+# Mapping drivers for chip access
-+#
-+# CONFIG_MTD_COMPLEX_MAPPINGS is not set
-+CONFIG_MTD_PHYSMAP=y
-+CONFIG_MTD_PHYSMAP_START=0x8000000
-+CONFIG_MTD_PHYSMAP_LEN=0x0
-+CONFIG_MTD_PHYSMAP_BANKWIDTH=2
-+# CONFIG_MTD_PLATRAM is not set
++ BUG_ON(channel >= DMAC_NR_CHANNELS
++ || dmac->channel[channel].state != CH_STATE_ALLOCATED);
+
-+#
-+# Self-contained MTD device drivers
-+#
-+# CONFIG_MTD_DATAFLASH is not set
-+# CONFIG_MTD_M25P80 is not set
-+# CONFIG_MTD_SLRAM is not set
-+# CONFIG_MTD_PHRAM is not set
-+# CONFIG_MTD_MTDRAM is not set
++ dmac->channel[channel].state = CH_STATE_FREE;
++}
+
-+#
-+# Disk-On-Chip Device Drivers
-+#
-+# CONFIG_MTD_DOC2000 is not set
-+# CONFIG_MTD_DOC2001 is not set
-+# CONFIG_MTD_DOC2001PLUS is not set
-+# CONFIG_MTD_NAND is not set
-+# CONFIG_MTD_ONENAND is not set
++static struct dw_dma_block *allocate_blocks(struct dw_dma_controller *dmac,
++ unsigned int nr_blocks)
++{
++ struct dw_dma_block *block;
++ void *p;
++ unsigned int i;
+
-+#
-+# UBI - Unsorted block images
-+#
-+# CONFIG_MTD_UBI is not set
-+# CONFIG_PARPORT is not set
-+CONFIG_MISC_DEVICES=y
-+# CONFIG_ATMEL_PWM is not set
-+CONFIG_ATMEL_TCLIB=y
-+CONFIG_ATMEL_TCB_CLKSRC=y
-+CONFIG_ATMEL_TCB_CLKSRC_BLOCK=0
-+# CONFIG_EEPROM_93CX6 is not set
-+# CONFIG_ATMEL_SSC is not set
++ block = kmalloc(nr_blocks * sizeof(*block),
++ GFP_KERNEL);
++ if (unlikely(!block))
++ return NULL;
+
-+#
-+# SCSI device support
-+#
-+# CONFIG_SCSI_DMA is not set
-+# CONFIG_SCSI_NETLINK is not set
-+# CONFIG_NETDEVICES is not set
-+# CONFIG_ISDN is not set
-+# CONFIG_PHONE is not set
++ for (i = 0; i < nr_blocks; i++) {
++ p = dma_pool_alloc(dmac->lli_pool, GFP_KERNEL,
++ &block[i].lli_dma_addr);
++ block[i].lli_vaddr = p;
++ if (unlikely(!p))
++ goto fail;
++ }
+
-+#
-+# Input device support
-+#
-+# CONFIG_INPUT is not set
++ return block;
+
-+#
-+# Hardware I/O ports
-+#
-+# CONFIG_SERIO is not set
-+# CONFIG_GAMEPORT is not set
++fail:
++ for (i = 0; i < nr_blocks; i++) {
++ if (!block[i].lli_vaddr)
++ break;
++ dma_pool_free(dmac->lli_pool, block[i].lli_vaddr,
++ block[i].lli_dma_addr);
++ }
++ kfree(block);
++ return NULL;
++}
+
-+#
-+# Character devices
-+#
-+# CONFIG_VT is not set
-+# CONFIG_SERIAL_NONSTANDARD is not set
++static void cleanup_channel(struct dw_dma_controller *dmac,
++ struct dw_dma_channel *chan)
++{
++ unsigned int i;
+
-+#
-+# Serial drivers
-+#
-+# CONFIG_SERIAL_8250 is not set
++ if (chan->nr_blocks > 1) {
++ for (i = 0; i < chan->nr_blocks; i++)
++ dma_pool_free(dmac->lli_pool, chan->block[i].lli_vaddr,
++ chan->block[i].lli_dma_addr);
++ kfree(chan->block);
++ }
+
-+#
-+# Non-8250 serial port support
-+#
-+CONFIG_SERIAL_ATMEL=y
-+CONFIG_SERIAL_ATMEL_CONSOLE=y
-+# CONFIG_SERIAL_ATMEL_PDC is not set
-+# CONFIG_SERIAL_ATMEL_TTYAT is not set
-+CONFIG_SERIAL_CORE=y
-+CONFIG_SERIAL_CORE_CONSOLE=y
-+CONFIG_UNIX98_PTYS=y
-+# CONFIG_LEGACY_PTYS is not set
-+# CONFIG_IPMI_HANDLER is not set
-+# CONFIG_HW_RANDOM is not set
-+# CONFIG_RTC is not set
-+# CONFIG_GEN_RTC is not set
-+# CONFIG_R3964 is not set
-+# CONFIG_TCG_TPM is not set
-+# CONFIG_I2C is not set
++ chan->state = CH_STATE_ALLOCATED;
++}
+
-+#
-+# SPI support
-+#
-+CONFIG_SPI=y
-+CONFIG_SPI_MASTER=y
++static int dmac_prepare_request_sg(struct dma_controller *_dmac,
++ struct dma_request_sg *req)
++{
++ struct dw_dma_controller *dmac = to_dw_dmac(_dmac);
++ struct dw_dma_channel *chan;
++ unsigned long ctlhi, ctllo, cfghi, cfglo;
++ unsigned long block_size;
++ unsigned int nr_blocks;
++ int ret, i, direction;
++ unsigned long flags;
+
-+#
-+# SPI Master Controller Drivers
-+#
-+CONFIG_SPI_ATMEL=y
-+# CONFIG_SPI_BITBANG is not set
++ spin_lock_irqsave(&dmac->lock, flags);
+
-+#
-+# SPI Protocol Masters
-+#
-+# CONFIG_SPI_AT25 is not set
-+# CONFIG_SPI_SPIDEV is not set
-+# CONFIG_SPI_TLE62X0 is not set
-+# CONFIG_W1 is not set
-+# CONFIG_POWER_SUPPLY is not set
-+# CONFIG_HWMON is not set
-+CONFIG_WATCHDOG=y
-+# CONFIG_WATCHDOG_NOWAYOUT is not set
++ ret = -EINVAL;
++ if (req->req.channel >= DMAC_NR_CHANNELS
++ || dmac->channel[req->req.channel].state != CH_STATE_ALLOCATED
++ || req->block_size > DMAC_MAX_BLOCKSIZE) {
++ spin_unlock_irqrestore(&dmac->lock, flags);
++ return -EINVAL;
++ }
+
-+#
-+# Watchdog Device Drivers
-+#
-+# CONFIG_SOFT_WATCHDOG is not set
-+CONFIG_AT32AP700X_WDT=y
++ chan = &dmac->channel[req->req.channel];
++ chan->state = CH_STATE_BUSY;
++ chan->req_sg = req;
++ chan->is_cyclic = 0;
+
-+#
-+# Sonics Silicon Backplane
-+#
-+CONFIG_SSB_POSSIBLE=y
-+# CONFIG_SSB is not set
++ /*
++ * We have marked the channel as busy, so no need to keep the
++ * lock as long as we only touch the channel-specific
++ * registers
++ */
++ spin_unlock_irqrestore(&dmac->lock, flags);
+
-+#
-+# Multifunction device drivers
-+#
-+# CONFIG_MFD_SM501 is not set
++ /*
++ * There may be limitations in the driver and/or the DMA
++ * controller that prevents us from sending a whole
++ * scatterlist item in one go. Taking this into account,
++ * calculate the number of block transfers we need to set up.
++ *
++ * FIXME: Let the peripheral driver know about the maximum
++ * block size we support. We really don't want to use a
++ * different block size than what was suggested by the
++ * peripheral.
++ *
++ * Each block will get its own Linked List Item (LLI) below.
++ */
++ block_size = req->block_size;
++ nr_blocks = req->nr_blocks;
++ pr_debug("block_size %lu, nr_blocks %u nr_sg = %u\n",
++ block_size, nr_blocks, req->nr_sg);
+
-+#
-+# Multimedia devices
-+#
-+# CONFIG_VIDEO_DEV is not set
-+# CONFIG_DVB_CORE is not set
-+# CONFIG_DAB is not set
++ BUG_ON(nr_blocks == 0);
++ chan->nr_blocks = nr_blocks;
+
-+#
-+# Graphics support
-+#
-+# CONFIG_VGASTATE is not set
-+# CONFIG_VIDEO_OUTPUT_CONTROL is not set
-+CONFIG_FB=y
-+# CONFIG_FIRMWARE_EDID is not set
-+# CONFIG_FB_DDC is not set
-+CONFIG_FB_CFB_FILLRECT=y
-+CONFIG_FB_CFB_COPYAREA=y
-+CONFIG_FB_CFB_IMAGEBLIT=y
-+# CONFIG_FB_CFB_REV_PIXELS_IN_BYTE is not set
-+# CONFIG_FB_SYS_FILLRECT is not set
-+# CONFIG_FB_SYS_COPYAREA is not set
-+# CONFIG_FB_SYS_IMAGEBLIT is not set
-+# CONFIG_FB_SYS_FOPS is not set
-+CONFIG_FB_DEFERRED_IO=y
-+# CONFIG_FB_SVGALIB is not set
-+# CONFIG_FB_MACMODES is not set
-+# CONFIG_FB_BACKLIGHT is not set
-+# CONFIG_FB_MODE_HELPERS is not set
-+# CONFIG_FB_TILEBLITTING is not set
++ ret = -EINVAL;
++ cfglo = cfghi = 0;
++ switch (req->direction) {
++ case DMA_DIR_MEM_TO_PERIPH:
++ direction = DMA_TO_DEVICE;
++ cfghi = req->periph_id << (43 - 32);
++ break;
+
-+#
-+# Frame buffer hardware drivers
-+#
-+# CONFIG_FB_S1D13XXX is not set
-+CONFIG_FB_ATMEL=y
-+# CONFIG_FB_VIRTUAL is not set
-+CONFIG_BACKLIGHT_LCD_SUPPORT=y
-+CONFIG_LCD_CLASS_DEVICE=y
-+CONFIG_LCD_LTV350QV=y
-+# CONFIG_BACKLIGHT_CLASS_DEVICE is not set
++ case DMA_DIR_PERIPH_TO_MEM:
++ direction = DMA_FROM_DEVICE;
++ cfghi = req->periph_id << (39 - 32);
++ break;
++ default:
++ goto out_unclaim_channel;
++ }
+
-+#
-+# Display device support
-+#
-+# CONFIG_DISPLAY_SUPPORT is not set
-+# CONFIG_LOGO is not set
++ chan->direction = direction;
+
-+#
-+# Sound
-+#
-+# CONFIG_SOUND is not set
-+CONFIG_USB_SUPPORT=y
-+# CONFIG_USB_ARCH_HAS_HCD is not set
-+# CONFIG_USB_ARCH_HAS_OHCI is not set
-+# CONFIG_USB_ARCH_HAS_EHCI is not set
++ dmac_chan_writel_hi(dmac, req->req.channel, CFG, cfghi);
++ dmac_chan_writel_lo(dmac, req->req.channel, CFG, cfglo);
+
-+#
-+# NOTE: USB_STORAGE enables SCSI, and 'SCSI disk support'
-+#
++ ctlhi = block_size >> req->width;
++ ctllo = ((req->direction << 20)
++ // | (1 << 14) | (1 << 11) // source/dest burst trans len
++ | (req->width << 4) | (req->width << 1)
++ | (1 << 0)); // interrupt enable
+
-+#
-+# USB Gadget Support
-+#
-+CONFIG_USB_GADGET=y
-+# CONFIG_USB_GADGET_DEBUG_FILES is not set
-+CONFIG_USB_GADGET_SELECTED=y
-+# CONFIG_USB_GADGET_AMD5536UDC is not set
-+CONFIG_USB_GADGET_ATMEL_USBA=y
-+CONFIG_USB_ATMEL_USBA=y
-+# CONFIG_USB_GADGET_FSL_USB2 is not set
-+# CONFIG_USB_GADGET_NET2280 is not set
-+# CONFIG_USB_GADGET_PXA2XX is not set
-+# CONFIG_USB_GADGET_M66592 is not set
-+# CONFIG_USB_GADGET_GOKU is not set
-+# CONFIG_USB_GADGET_LH7A40X is not set
-+# CONFIG_USB_GADGET_OMAP is not set
-+# CONFIG_USB_GADGET_S3C2410 is not set
-+# CONFIG_USB_GADGET_AT91 is not set
-+# CONFIG_USB_GADGET_DUMMY_HCD is not set
-+CONFIG_USB_GADGET_DUALSPEED=y
-+# CONFIG_USB_ZERO is not set
-+CONFIG_USB_ETH=y
-+# CONFIG_USB_ETH_RNDIS is not set
-+# CONFIG_USB_GADGETFS is not set
-+# CONFIG_USB_FILE_STORAGE is not set
-+# CONFIG_USB_G_SERIAL is not set
-+# CONFIG_USB_MIDI_GADGET is not set
-+# CONFIG_MMC is not set
-+# CONFIG_NEW_LEDS is not set
-+CONFIG_RTC_LIB=y
-+CONFIG_RTC_CLASS=y
-+CONFIG_RTC_HCTOSYS=y
-+CONFIG_RTC_HCTOSYS_DEVICE="rtc0"
-+# CONFIG_RTC_DEBUG is not set
++ if (nr_blocks == 1) {
++ /* Only one block: No need to use block chaining */
++ if (direction == DMA_TO_DEVICE) {
++ dmac_chan_writel_lo(dmac, req->req.channel, SAR,
++ req->sg->dma_address);
++ dmac_chan_writel_lo(dmac, req->req.channel, DAR,
++ req->data_reg);
++ ctllo |= 2 << 7; // no dst increment
++ } else {
++ dmac_chan_writel_lo(dmac, req->req.channel, SAR,
++ req->data_reg);
++ dmac_chan_writel_lo(dmac, req->req.channel, DAR,
++ req->sg->dma_address);
++ ctllo |= 2 << 9; // no src increment
++ }
++ dmac_chan_writel_lo(dmac, req->req.channel, CTL, ctllo);
++ dmac_chan_writel_hi(dmac, req->req.channel, CTL, ctlhi);
++ pr_debug("ctl hi:lo 0x%lx:%lx\n", ctlhi, ctllo);
++ } else {
++ struct dw_dma_lli *lli, *lli_prev = NULL;
++ int j = 0, offset = 0;
+
-+#
-+# RTC interfaces
-+#
-+CONFIG_RTC_INTF_SYSFS=y
-+# CONFIG_RTC_INTF_PROC is not set
-+CONFIG_RTC_INTF_DEV=y
-+# CONFIG_RTC_INTF_DEV_UIE_EMUL is not set
-+# CONFIG_RTC_DRV_TEST is not set
++ ret = -ENOMEM;
++ chan->block = allocate_blocks(dmac, nr_blocks);
++ if (!chan->block)
++ goto out_unclaim_channel;
+
-+#
-+# SPI RTC drivers
-+#
-+# CONFIG_RTC_DRV_RS5C348 is not set
-+# CONFIG_RTC_DRV_MAX6902 is not set
++ if (direction == DMA_TO_DEVICE)
++ ctllo |= 1 << 28 | 1 << 27 | 2 << 7;
++ else
++ ctllo |= 1 << 28 | 1 << 27 | 2 << 9;
+
-+#
-+# Platform RTC drivers
-+#
-+# CONFIG_RTC_DRV_DS1553 is not set
-+# CONFIG_RTC_DRV_STK17TA8 is not set
-+# CONFIG_RTC_DRV_DS1742 is not set
-+# CONFIG_RTC_DRV_M48T86 is not set
-+# CONFIG_RTC_DRV_M48T59 is not set
-+# CONFIG_RTC_DRV_V3020 is not set
++ /*
++ * Map scatterlist items to blocks. One scatterlist
++ * item may need more than one block for the reasons
++ * mentioned above.
++ */
++ for (i = 0; i < nr_blocks; i++) {
++ lli = chan->block[i].lli_vaddr;
++ if (lli_prev) {
++ lli_prev->llp = chan->block[i].lli_dma_addr;
++ pr_debug("lli[%d] (0x%p/0x%x): 0x%x 0x%x 0x%x 0x%x 0x%x\n",
++ i - 1, chan->block[i - 1].lli_vaddr,
++ chan->block[i - 1].lli_dma_addr,
++ lli_prev->sar, lli_prev->dar, lli_prev->llp,
++ lli_prev->ctllo, lli_prev->ctlhi);
++ }
++ lli->llp = 0;
++ lli->ctllo = ctllo;
++ lli->ctlhi = ctlhi;
++ if (direction == DMA_TO_DEVICE) {
++ lli->sar = req->sg[j].dma_address + offset;
++ lli->dar = req->data_reg;
++ } else {
++ lli->sar = req->data_reg;
++ lli->dar = req->sg[j].dma_address + offset;
++ }
++ lli_prev = lli;
+
-+#
-+# on-CPU RTC drivers
-+#
-+CONFIG_RTC_DRV_AT32AP700X=y
++ offset += block_size;
++ if (offset > req->sg[j].length) {
++ j++;
++ offset = 0;
++ }
++ }
+
-+#
-+# Userspace I/O
-+#
-+# CONFIG_UIO is not set
++ pr_debug("lli[%d] (0x%p/0x%x): 0x%x 0x%x 0x%x 0x%x 0x%x\n",
++ i - 1, chan->block[i - 1].lli_vaddr,
++ chan->block[i - 1].lli_dma_addr, lli_prev->sar,
++ lli_prev->dar, lli_prev->llp,
++ lli_prev->ctllo, lli_prev->ctlhi);
+
-+#
-+# File systems
-+#
-+# CONFIG_INOTIFY is not set
-+# CONFIG_QUOTA is not set
-+# CONFIG_DNOTIFY is not set
-+# CONFIG_AUTOFS_FS is not set
-+# CONFIG_AUTOFS4_FS is not set
-+# CONFIG_FUSE_FS is not set
++ /*
++ * SAR, DAR and CTL are initialized from the LLI. We
++ * only have to enable the LLI bits in CTL.
++ */
++ dmac_chan_writel_hi(dmac, req->req.channel, CTL, 0);
++ dmac_chan_writel_lo(dmac, req->req.channel, LLP,
++ chan->block[0].lli_dma_addr);
++ dmac_chan_writel_lo(dmac, req->req.channel, CTL, 1 << 28 | 1 << 27);
++ }
+
-+#
-+# Pseudo filesystems
-+#
-+CONFIG_PROC_FS=y
-+CONFIG_PROC_KCORE=y
-+CONFIG_PROC_SYSCTL=y
-+CONFIG_SYSFS=y
-+CONFIG_TMPFS=y
-+# CONFIG_TMPFS_POSIX_ACL is not set
-+# CONFIG_HUGETLB_PAGE is not set
-+# CONFIG_CONFIGFS_FS is not set
++ set_channel_bit(dmac, MASK_XFER, req->req.channel);
++ set_channel_bit(dmac, MASK_ERROR, req->req.channel);
++ if (req->req.block_complete)
++ set_channel_bit(dmac, MASK_BLOCK, req->req.channel);
++ else
++ clear_channel_bit(dmac, MASK_BLOCK, req->req.channel);
+
-+#
-+# Miscellaneous filesystems
-+#
-+CONFIG_JFFS2_FS=y
-+CONFIG_JFFS2_FS_DEBUG=0
-+# CONFIG_JFFS2_FS_WRITEBUFFER is not set
-+# CONFIG_JFFS2_SUMMARY is not set
-+# CONFIG_JFFS2_FS_XATTR is not set
-+# CONFIG_JFFS2_COMPRESSION_OPTIONS is not set
-+CONFIG_JFFS2_ZLIB=y
-+# CONFIG_JFFS2_LZO is not set
-+CONFIG_JFFS2_RTIME=y
-+# CONFIG_JFFS2_RUBIN is not set
-+# CONFIG_NETWORK_FILESYSTEMS is not set
-+# CONFIG_NLS is not set
-+# CONFIG_DLM is not set
-+# CONFIG_INSTRUMENTATION is not set
++ return 0;
+
-+#
-+# Kernel hacking
-+#
-+# CONFIG_PRINTK_TIME is not set
-+CONFIG_ENABLE_WARN_DEPRECATED=y
-+CONFIG_ENABLE_MUST_CHECK=y
-+CONFIG_MAGIC_SYSRQ=y
-+# CONFIG_UNUSED_SYMBOLS is not set
-+# CONFIG_DEBUG_FS is not set
-+# CONFIG_HEADERS_CHECK is not set
-+# CONFIG_DEBUG_KERNEL is not set
-+# CONFIG_DEBUG_BUGVERBOSE is not set
-+# CONFIG_SAMPLES is not set
++out_unclaim_channel:
++ chan->state = CH_STATE_ALLOCATED;
++ return ret;
++}
+
-+#
-+# Security options
-+#
-+# CONFIG_KEYS is not set
-+# CONFIG_SECURITY is not set
-+# CONFIG_SECURITY_FILE_CAPABILITIES is not set
-+# CONFIG_CRYPTO is not set
++static int dmac_prepare_request_cyclic(struct dma_controller *_dmac,
++ struct dma_request_cyclic *req)
++{
++ struct dw_dma_controller *dmac = to_dw_dmac(_dmac);
++ struct dw_dma_channel *chan;
++ unsigned long ctlhi, ctllo, cfghi, cfglo;
++ unsigned long block_size;
++ int ret, i, direction;
++ unsigned long flags;
+
-+#
-+# Library routines
-+#
-+CONFIG_BITREVERSE=y
-+# CONFIG_CRC_CCITT is not set
-+# CONFIG_CRC16 is not set
-+# CONFIG_CRC_ITU_T is not set
-+CONFIG_CRC32=y
-+# CONFIG_CRC7 is not set
-+# CONFIG_LIBCRC32C is not set
-+CONFIG_ZLIB_INFLATE=y
-+CONFIG_ZLIB_DEFLATE=y
-+CONFIG_HAS_IOMEM=y
-+CONFIG_HAS_IOPORT=y
-+CONFIG_HAS_DMA=y
---- /dev/null
-+++ b/arch/avr32/drivers/dw-dmac.c
-@@ -0,0 +1,761 @@
-+/*
-+ * Driver for the Synopsys DesignWare DMA Controller
-+ *
-+ * Copyright (C) 2005-2006 Atmel Corporation
-+ *
-+ * This program is free software; you can redistribute it and/or modify
-+ * it under the terms of the GNU General Public License version 2 as
-+ * published by the Free Software Foundation.
-+ */
-+#include <linux/clk.h>
-+#include <linux/device.h>
-+#include <linux/dma-mapping.h>
-+#include <linux/dmapool.h>
-+#include <linux/init.h>
-+#include <linux/interrupt.h>
-+#include <linux/module.h>
-+#include <linux/platform_device.h>
++ spin_lock_irqsave(&dmac->lock, flags);
+
-+#include <asm/dma-controller.h>
-+#include <asm/io.h>
++ block_size = (req->buffer_size/req->periods) >> req->width;
+
-+#include "dw-dmac.h"
-+
-+#define DMAC_NR_CHANNELS 3
-+#define DMAC_MAX_BLOCKSIZE 4095
-+
-+enum {
-+ CH_STATE_FREE = 0,
-+ CH_STATE_ALLOCATED,
-+ CH_STATE_BUSY,
-+};
-+
-+struct dw_dma_lli {
-+ dma_addr_t sar;
-+ dma_addr_t dar;
-+ dma_addr_t llp;
-+ u32 ctllo;
-+ u32 ctlhi;
-+ u32 sstat;
-+ u32 dstat;
-+};
-+
-+struct dw_dma_block {
-+ struct dw_dma_lli *lli_vaddr;
-+ dma_addr_t lli_dma_addr;
-+};
-+
-+struct dw_dma_channel {
-+ unsigned int state;
-+ int is_cyclic;
-+ struct dma_request_sg *req_sg;
-+ struct dma_request_cyclic *req_cyclic;
-+ unsigned int nr_blocks;
-+ int direction;
-+ struct dw_dma_block *block;
-+};
-+
-+struct dw_dma_controller {
-+ spinlock_t lock;
-+ void * __iomem regs;
-+ struct dma_pool *lli_pool;
-+ struct clk *hclk;
-+ struct dma_controller dma;
-+ struct dw_dma_channel channel[DMAC_NR_CHANNELS];
-+};
-+#define to_dw_dmac(dmac) container_of(dmac, struct dw_dma_controller, dma)
-+
-+#define dmac_writel_hi(dmac, reg, value) \
-+ __raw_writel((value), (dmac)->regs + DW_DMAC_##reg + 4)
-+#define dmac_readl_hi(dmac, reg) \
-+ __raw_readl((dmac)->regs + DW_DMAC_##reg + 4)
-+#define dmac_writel_lo(dmac, reg, value) \
-+ __raw_writel((value), (dmac)->regs + DW_DMAC_##reg)
-+#define dmac_readl_lo(dmac, reg) \
-+ __raw_readl((dmac)->regs + DW_DMAC_##reg)
-+#define dmac_chan_writel_hi(dmac, chan, reg, value) \
-+ __raw_writel((value), ((dmac)->regs + 0x58 * (chan) \
-+ + DW_DMAC_CHAN_##reg + 4))
-+#define dmac_chan_readl_hi(dmac, chan, reg) \
-+ __raw_readl((dmac)->regs + 0x58 * (chan) + DW_DMAC_CHAN_##reg + 4)
-+#define dmac_chan_writel_lo(dmac, chan, reg, value) \
-+ __raw_writel((value), (dmac)->regs + 0x58 * (chan) + DW_DMAC_CHAN_##reg)
-+#define dmac_chan_readl_lo(dmac, chan, reg) \
-+ __raw_readl((dmac)->regs + 0x58 * (chan) + DW_DMAC_CHAN_##reg)
-+#define set_channel_bit(dmac, reg, chan) \
-+ dmac_writel_lo(dmac, reg, (1 << (chan)) | (1 << ((chan) + 8)))
-+#define clear_channel_bit(dmac, reg, chan) \
-+ dmac_writel_lo(dmac, reg, (0 << (chan)) | (1 << ((chan) + 8)))
-+
-+static int dmac_alloc_channel(struct dma_controller *_dmac)
-+{
-+ struct dw_dma_controller *dmac = to_dw_dmac(_dmac);
-+ struct dw_dma_channel *chan;
-+ unsigned long flags;
-+ int i;
-+
-+ spin_lock_irqsave(&dmac->lock, flags);
-+ for (i = 0; i < DMAC_NR_CHANNELS; i++)
-+ if (dmac->channel[i].state == CH_STATE_FREE)
-+ break;
-+
-+ if (i < DMAC_NR_CHANNELS) {
-+ chan = &dmac->channel[i];
-+ chan->state = CH_STATE_ALLOCATED;
-+ } else {
-+ i = -EBUSY;
-+ }
-+
-+ spin_unlock_irqrestore(&dmac->lock, flags);
-+
-+ return i;
-+}
-+
-+static void dmac_release_channel(struct dma_controller *_dmac, int channel)
-+{
-+ struct dw_dma_controller *dmac = to_dw_dmac(_dmac);
-+
-+ BUG_ON(channel >= DMAC_NR_CHANNELS
-+ || dmac->channel[channel].state != CH_STATE_ALLOCATED);
-+
-+ dmac->channel[channel].state = CH_STATE_FREE;
-+}
-+
-+static struct dw_dma_block *allocate_blocks(struct dw_dma_controller *dmac,
-+ unsigned int nr_blocks)
-+{
-+ struct dw_dma_block *block;
-+ void *p;
-+ unsigned int i;
-+
-+ block = kmalloc(nr_blocks * sizeof(*block),
-+ GFP_KERNEL);
-+ if (unlikely(!block))
-+ return NULL;
-+
-+ for (i = 0; i < nr_blocks; i++) {
-+ p = dma_pool_alloc(dmac->lli_pool, GFP_KERNEL,
-+ &block[i].lli_dma_addr);
-+ block[i].lli_vaddr = p;
-+ if (unlikely(!p))
-+ goto fail;
-+ }
-+
-+ return block;
-+
-+fail:
-+ for (i = 0; i < nr_blocks; i++) {
-+ if (!block[i].lli_vaddr)
-+ break;
-+ dma_pool_free(dmac->lli_pool, block[i].lli_vaddr,
-+ block[i].lli_dma_addr);
-+ }
-+ kfree(block);
-+ return NULL;
-+}
-+
-+static void cleanup_channel(struct dw_dma_controller *dmac,
-+ struct dw_dma_channel *chan)
-+{
-+ unsigned int i;
-+
-+ if (chan->nr_blocks > 1) {
-+ for (i = 0; i < chan->nr_blocks; i++)
-+ dma_pool_free(dmac->lli_pool, chan->block[i].lli_vaddr,
-+ chan->block[i].lli_dma_addr);
-+ kfree(chan->block);
-+ }
-+
-+ chan->state = CH_STATE_ALLOCATED;
-+}
-+
-+static int dmac_prepare_request_sg(struct dma_controller *_dmac,
-+ struct dma_request_sg *req)
-+{
-+ struct dw_dma_controller *dmac = to_dw_dmac(_dmac);
-+ struct dw_dma_channel *chan;
-+ unsigned long ctlhi, ctllo, cfghi, cfglo;
-+ unsigned long block_size;
-+ unsigned int nr_blocks;
-+ int ret, i, direction;
-+ unsigned long flags;
-+
-+ spin_lock_irqsave(&dmac->lock, flags);
-+
-+ ret = -EINVAL;
-+ if (req->req.channel >= DMAC_NR_CHANNELS
-+ || dmac->channel[req->req.channel].state != CH_STATE_ALLOCATED
-+ || req->block_size > DMAC_MAX_BLOCKSIZE) {
-+ spin_unlock_irqrestore(&dmac->lock, flags);
-+ return -EINVAL;
-+ }
++ ret = -EINVAL;
++ if (req->req.channel >= DMAC_NR_CHANNELS
++ || dmac->channel[req->req.channel].state != CH_STATE_ALLOCATED
++ || (req->periods == 0)
++ || block_size > DMAC_MAX_BLOCKSIZE) {
++ spin_unlock_irqrestore(&dmac->lock, flags);
++ return -EINVAL;
++ }
+
+ chan = &dmac->channel[req->req.channel];
+ chan->state = CH_STATE_BUSY;
-+ chan->req_sg = req;
-+ chan->is_cyclic = 0;
++ chan->is_cyclic = 1;
++ chan->req_cyclic = req;
+
+ /*
+ * We have marked the channel as busy, so no need to keep the
+ spin_unlock_irqrestore(&dmac->lock, flags);
+
+ /*
-+ * There may be limitations in the driver and/or the DMA
-+ * controller that prevents us from sending a whole
-+ * scatterlist item in one go. Taking this into account,
-+ * calculate the number of block transfers we need to set up.
-+ *
-+ * FIXME: Let the peripheral driver know about the maximum
-+ * block size we support. We really don't want to use a
-+ * different block size than what was suggested by the
-+ * peripheral.
-+ *
-+ * Each block will get its own Linked List Item (LLI) below.
++ Setup
+ */
-+ block_size = req->block_size;
-+ nr_blocks = req->nr_blocks;
-+ pr_debug("block_size %lu, nr_blocks %u nr_sg = %u\n",
-+ block_size, nr_blocks, req->nr_sg);
++ BUG_ON(req->buffer_size % req->periods);
++ /* printk(KERN_INFO "block_size = %lu, periods = %u\n", block_size, req->periods); */
+
-+ BUG_ON(nr_blocks == 0);
-+ chan->nr_blocks = nr_blocks;
++ chan->nr_blocks = req->periods;
+
+ ret = -EINVAL;
+ cfglo = cfghi = 0;
+ dmac_chan_writel_hi(dmac, req->req.channel, CFG, cfghi);
+ dmac_chan_writel_lo(dmac, req->req.channel, CFG, cfglo);
+
-+ ctlhi = block_size >> req->width;
++ ctlhi = block_size;
+ ctllo = ((req->direction << 20)
-+ // | (1 << 14) | (1 << 11) // source/dest burst trans len
+ | (req->width << 4) | (req->width << 1)
+ | (1 << 0)); // interrupt enable
+
-+ if (nr_blocks == 1) {
-+ /* Only one block: No need to use block chaining */
-+ if (direction == DMA_TO_DEVICE) {
-+ dmac_chan_writel_lo(dmac, req->req.channel, SAR,
-+ req->sg->dma_address);
-+ dmac_chan_writel_lo(dmac, req->req.channel, DAR,
-+ req->data_reg);
-+ ctllo |= 2 << 7; // no dst increment
-+ } else {
-+ dmac_chan_writel_lo(dmac, req->req.channel, SAR,
-+ req->data_reg);
-+ dmac_chan_writel_lo(dmac, req->req.channel, DAR,
-+ req->sg->dma_address);
-+ ctllo |= 2 << 9; // no src increment
-+ }
-+ dmac_chan_writel_lo(dmac, req->req.channel, CTL, ctllo);
-+ dmac_chan_writel_hi(dmac, req->req.channel, CTL, ctlhi);
-+ pr_debug("ctl hi:lo 0x%lx:%lx\n", ctlhi, ctllo);
-+ } else {
-+ struct dw_dma_lli *lli, *lli_prev = NULL;
-+ int j = 0, offset = 0;
++ {
++ struct dw_dma_lli *lli = NULL, *lli_prev = NULL;
+
+ ret = -ENOMEM;
-+ chan->block = allocate_blocks(dmac, nr_blocks);
++ chan->block = allocate_blocks(dmac, req->periods);
+ if (!chan->block)
+ goto out_unclaim_channel;
+
+ ctllo |= 1 << 28 | 1 << 27 | 2 << 9;
+
+ /*
-+ * Map scatterlist items to blocks. One scatterlist
-+ * item may need more than one block for the reasons
-+ * mentioned above.
++ * Set up a linked list items where each period gets
++ * an item. The linked list item for the last period
++ * points back to the star of the buffer making a
++ * cyclic buffer.
+ */
-+ for (i = 0; i < nr_blocks; i++) {
++ for (i = 0; i < req->periods; i++) {
+ lli = chan->block[i].lli_vaddr;
+ if (lli_prev) {
+ lli_prev->llp = chan->block[i].lli_dma_addr;
-+ pr_debug("lli[%d] (0x%p/0x%x): 0x%x 0x%x 0x%x 0x%x 0x%x\n",
-+ i - 1, chan->block[i - 1].lli_vaddr,
-+ chan->block[i - 1].lli_dma_addr,
-+ lli_prev->sar, lli_prev->dar, lli_prev->llp,
-+ lli_prev->ctllo, lli_prev->ctlhi);
++ /* printk(KERN_INFO "lli[%d] (0x%p/0x%x): 0x%x 0x%x 0x%x 0x%x 0x%x\n",
++ i - 1, chan->block[i - 1].lli_vaddr,
++ chan->block[i - 1].lli_dma_addr,
++ lli_prev->sar, lli_prev->dar, lli_prev->llp,
++ lli_prev->ctllo, lli_prev->ctlhi);*/
+ }
+ lli->llp = 0;
+ lli->ctllo = ctllo;
+ lli->ctlhi = ctlhi;
+ if (direction == DMA_TO_DEVICE) {
-+ lli->sar = req->sg[j].dma_address + offset;
++ lli->sar = req->buffer_start + i*(block_size << req->width);
+ lli->dar = req->data_reg;
+ } else {
+ lli->sar = req->data_reg;
-+ lli->dar = req->sg[j].dma_address + offset;
++ lli->dar = req->buffer_start + i*(block_size << req->width);
+ }
+ lli_prev = lli;
-+
-+ offset += block_size;
-+ if (offset > req->sg[j].length) {
-+ j++;
-+ offset = 0;
-+ }
+ }
-+
-+ pr_debug("lli[%d] (0x%p/0x%x): 0x%x 0x%x 0x%x 0x%x 0x%x\n",
-+ i - 1, chan->block[i - 1].lli_vaddr,
-+ chan->block[i - 1].lli_dma_addr, lli_prev->sar,
-+ lli_prev->dar, lli_prev->llp,
-+ lli_prev->ctllo, lli_prev->ctlhi);
-+
-+ /*
-+ * SAR, DAR and CTL are initialized from the LLI. We
-+ * only have to enable the LLI bits in CTL.
-+ */
-+ dmac_chan_writel_hi(dmac, req->req.channel, CTL, 0);
-+ dmac_chan_writel_lo(dmac, req->req.channel, LLP,
-+ chan->block[0].lli_dma_addr);
-+ dmac_chan_writel_lo(dmac, req->req.channel, CTL, 1 << 28 | 1 << 27);
-+ }
-+
-+ set_channel_bit(dmac, MASK_XFER, req->req.channel);
-+ set_channel_bit(dmac, MASK_ERROR, req->req.channel);
-+ if (req->req.block_complete)
-+ set_channel_bit(dmac, MASK_BLOCK, req->req.channel);
-+ else
-+ clear_channel_bit(dmac, MASK_BLOCK, req->req.channel);
-+
-+ return 0;
-+
-+out_unclaim_channel:
-+ chan->state = CH_STATE_ALLOCATED;
-+ return ret;
-+}
-+
-+static int dmac_prepare_request_cyclic(struct dma_controller *_dmac,
-+ struct dma_request_cyclic *req)
-+{
-+ struct dw_dma_controller *dmac = to_dw_dmac(_dmac);
-+ struct dw_dma_channel *chan;
-+ unsigned long ctlhi, ctllo, cfghi, cfglo;
-+ unsigned long block_size;
-+ int ret, i, direction;
-+ unsigned long flags;
-+
-+ spin_lock_irqsave(&dmac->lock, flags);
-+
-+ block_size = (req->buffer_size/req->periods) >> req->width;
-+
-+ ret = -EINVAL;
-+ if (req->req.channel >= DMAC_NR_CHANNELS
-+ || dmac->channel[req->req.channel].state != CH_STATE_ALLOCATED
-+ || (req->periods == 0)
-+ || block_size > DMAC_MAX_BLOCKSIZE) {
-+ spin_unlock_irqrestore(&dmac->lock, flags);
-+ return -EINVAL;
-+ }
-+
-+ chan = &dmac->channel[req->req.channel];
-+ chan->state = CH_STATE_BUSY;
-+ chan->is_cyclic = 1;
-+ chan->req_cyclic = req;
-+
-+ /*
-+ * We have marked the channel as busy, so no need to keep the
-+ * lock as long as we only touch the channel-specific
-+ * registers
-+ */
-+ spin_unlock_irqrestore(&dmac->lock, flags);
-+
-+ /*
-+ Setup
-+ */
-+ BUG_ON(req->buffer_size % req->periods);
-+ /* printk(KERN_INFO "block_size = %lu, periods = %u\n", block_size, req->periods); */
-+
-+ chan->nr_blocks = req->periods;
-+
-+ ret = -EINVAL;
-+ cfglo = cfghi = 0;
-+ switch (req->direction) {
-+ case DMA_DIR_MEM_TO_PERIPH:
-+ direction = DMA_TO_DEVICE;
-+ cfghi = req->periph_id << (43 - 32);
-+ break;
-+
-+ case DMA_DIR_PERIPH_TO_MEM:
-+ direction = DMA_FROM_DEVICE;
-+ cfghi = req->periph_id << (39 - 32);
-+ break;
-+ default:
-+ goto out_unclaim_channel;
-+ }
-+
-+ chan->direction = direction;
-+
-+ dmac_chan_writel_hi(dmac, req->req.channel, CFG, cfghi);
-+ dmac_chan_writel_lo(dmac, req->req.channel, CFG, cfglo);
-+
-+ ctlhi = block_size;
-+ ctllo = ((req->direction << 20)
-+ | (req->width << 4) | (req->width << 1)
-+ | (1 << 0)); // interrupt enable
-+
-+ {
-+ struct dw_dma_lli *lli = NULL, *lli_prev = NULL;
-+
-+ ret = -ENOMEM;
-+ chan->block = allocate_blocks(dmac, req->periods);
-+ if (!chan->block)
-+ goto out_unclaim_channel;
-+
-+ if (direction == DMA_TO_DEVICE)
-+ ctllo |= 1 << 28 | 1 << 27 | 2 << 7;
-+ else
-+ ctllo |= 1 << 28 | 1 << 27 | 2 << 9;
-+
-+ /*
-+ * Set up a linked list items where each period gets
-+ * an item. The linked list item for the last period
-+ * points back to the star of the buffer making a
-+ * cyclic buffer.
-+ */
-+ for (i = 0; i < req->periods; i++) {
-+ lli = chan->block[i].lli_vaddr;
-+ if (lli_prev) {
-+ lli_prev->llp = chan->block[i].lli_dma_addr;
-+ /* printk(KERN_INFO "lli[%d] (0x%p/0x%x): 0x%x 0x%x 0x%x 0x%x 0x%x\n",
-+ i - 1, chan->block[i - 1].lli_vaddr,
-+ chan->block[i - 1].lli_dma_addr,
-+ lli_prev->sar, lli_prev->dar, lli_prev->llp,
-+ lli_prev->ctllo, lli_prev->ctlhi);*/
-+ }
-+ lli->llp = 0;
-+ lli->ctllo = ctllo;
-+ lli->ctlhi = ctlhi;
-+ if (direction == DMA_TO_DEVICE) {
-+ lli->sar = req->buffer_start + i*(block_size << req->width);
-+ lli->dar = req->data_reg;
-+ } else {
-+ lli->sar = req->data_reg;
-+ lli->dar = req->buffer_start + i*(block_size << req->width);
-+ }
-+ lli_prev = lli;
-+ }
-+ lli->llp = chan->block[0].lli_dma_addr;
++ lli->llp = chan->block[0].lli_dma_addr;
+
+ /*printk(KERN_INFO "lli[%d] (0x%p/0x%x): 0x%x 0x%x 0x%x 0x%x 0x%x\n",
+ i - 1, chan->block[i - 1].lli_vaddr,
+MODULE_DESCRIPTION("Synopsys DesignWare DMA Controller driver");
+MODULE_AUTHOR("Haavard Skinnemoen <hskinnemoen@atmel.com>");
+MODULE_LICENSE("GPL");
---- /dev/null
-+++ b/arch/avr32/drivers/dw-dmac.h
+diff --exclude=.git -urN linux-2.6.25.6/arch/avr32/drivers/dw-dmac.h avr32-2.6/arch/avr32/drivers/dw-dmac.h
+--- linux-2.6.25.6/arch/avr32/drivers/dw-dmac.h 1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/arch/avr32/drivers/dw-dmac.h 2008-06-12 15:09:38.719815350 +0200
@@ -0,0 +1,42 @@
+/*
+ * Driver for the Synopsys DesignWare DMA Controller
+#define DW_DMAC_CHAN_DSR 0x050
+
+#endif /* __AVR32_DW_DMAC_H__ */
---- /dev/null
-+++ b/arch/avr32/drivers/Makefile
+diff --exclude=.git -urN linux-2.6.25.6/arch/avr32/drivers/Makefile avr32-2.6/arch/avr32/drivers/Makefile
+--- linux-2.6.25.6/arch/avr32/drivers/Makefile 1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/arch/avr32/drivers/Makefile 2008-06-12 15:09:38.719815350 +0200
@@ -0,0 +1 @@
+obj-$(CONFIG_DW_DMAC) += dw-dmac.o
---- a/arch/avr32/Kconfig
-+++ b/arch/avr32/Kconfig
-@@ -45,6 +45,9 @@
+diff --exclude=.git -urN linux-2.6.25.6/arch/avr32/Kconfig avr32-2.6/arch/avr32/Kconfig
+--- linux-2.6.25.6/arch/avr32/Kconfig 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/avr32/Kconfig 2008-06-12 15:09:38.711815728 +0200
+@@ -47,6 +47,9 @@
config GENERIC_TIME
def_bool y
config RWSEM_XCHGADD_ALGORITHM
def_bool n
-@@ -54,6 +57,9 @@
- config ARCH_HAS_ILOG2_U64
- def_bool n
-
-+config ARCH_SUPPORTS_OPROFILE
-+ def_bool y
-+
- config GENERIC_HWEIGHT
- def_bool y
-
-@@ -68,6 +74,8 @@
+@@ -70,6 +73,8 @@
menu "System Type and features"
config SUBARCH_AVR32B
bool
config MMU
-@@ -81,19 +89,23 @@
+@@ -83,6 +88,7 @@
select MMU
select PERFORMANCE_COUNTERS
+ select HAVE_GPIO_LIB
++ select GENERIC_ALLOCATOR
--choice
-- prompt "AVR32 CPU type"
-- default CPU_AT32AP7000
-+#
-+# CPU types
-+#
-
--config CPU_AT32AP7000
-- bool "AT32AP7000"
-+# AP7000 derivatives
-+config CPU_AT32AP700X
-+ bool
- select PLATFORM_AT32AP
--endchoice
--
--#
--# CPU Daughterboards for ATSTK1000
--config BOARD_ATSTK1002
-+config CPU_AT32AP7000
-+ bool
-+ select CPU_AT32AP700X
-+config CPU_AT32AP7001
-+ bool
-+ select CPU_AT32AP700X
-+config CPU_AT32AP7002
- bool
-+ select CPU_AT32AP700X
-
- choice
- prompt "AVR32 board type"
-@@ -101,15 +113,18 @@
-
- config BOARD_ATSTK1000
- bool "ATSTK1000 evaluation board"
-- select BOARD_ATSTK1002 if CPU_AT32AP7000
-
- config BOARD_ATNGW100
- bool "ATNGW100 Network Gateway"
-+ select CPU_AT32AP7000
- endchoice
-
+ #
+ # CPU types
+@@ -117,6 +123,9 @@
if BOARD_ATSTK1000
source "arch/avr32/boards/atstk1000/Kconfig"
endif
choice
prompt "Boot loader type"
-@@ -123,15 +138,15 @@
-
- config LOAD_ADDRESS
- hex
-- default 0x10000000 if LOADER_U_BOOT=y && CPU_AT32AP7000=y
-+ default 0x10000000 if LOADER_U_BOOT=y && CPU_AT32AP700X=y
-
- config ENTRY_ADDRESS
- hex
-- default 0x90000000 if LOADER_U_BOOT=y && CPU_AT32AP7000=y
-+ default 0x90000000 if LOADER_U_BOOT=y && CPU_AT32AP700X=y
-
- config PHYS_OFFSET
- hex
-- default 0x10000000 if CPU_AT32AP7000=y
-+ default 0x10000000 if CPU_AT32AP700X=y
-
- source "kernel/Kconfig.preempt"
+@@ -180,6 +189,10 @@
+ be dumped to the console when a Non-Maskable Interrupt
+ happens.
-@@ -163,6 +178,20 @@
- enabling Nexus-compliant debuggers to keep track of the PID of the
- currently executing task.
-
-+config NMI_DEBUGGING
-+ bool "NMI Debugging"
-+ default n
-+ help
-+ Say Y here and pass the nmi_debug command-line parameter to
-+ the kernel to turn on NMI debugging. Depending on the value
-+ of the nmi_debug option, various pieces of information will
-+ be dumped to the console when a Non-Maskable Interrupt
-+ happens.
-+
+config DW_DMAC
+ tristate "Synopsys DesignWare DMA Controller support"
+ default y if CPU_AT32AP7000
# FPU emulation goes here
source "kernel/Kconfig.hz"
-@@ -219,6 +248,8 @@
-
- source "fs/Kconfig"
-
-+source "kernel/Kconfig.instrumentation"
-+
- source "arch/avr32/Kconfig.debug"
-
- source "security/Kconfig"
---- a/arch/avr32/Kconfig.debug
-+++ b/arch/avr32/Kconfig.debug
-@@ -6,14 +6,4 @@
-
- source "lib/Kconfig.debug"
-
--config KPROBES
-- bool "Kprobes"
-- depends on DEBUG_KERNEL
-- help
-- Kprobes allows you to trap at almost any kernel address and
-- execute a callback function. register_kprobe() establishes
-- a probepoint and specifies the callback. Kprobes is useful
-- for kernel debugging, non-intrusive instrumentation and testing.
-- If in doubt, say "N".
--
- endmenu
---- a/arch/avr32/kernel/cpu.c
-+++ b/arch/avr32/kernel/cpu.c
-@@ -13,6 +13,7 @@
- #include <linux/percpu.h>
- #include <linux/param.h>
- #include <linux/errno.h>
-+#include <linux/clk.h>
-
- #include <asm/setup.h>
- #include <asm/sysreg.h>
-@@ -187,9 +188,20 @@
-
- subsys_initcall(topology_init);
+@@ -196,6 +209,11 @@
-+struct chip_id_map {
-+ u16 mid;
-+ u16 pn;
-+ const char *name;
-+};
-+
-+static const struct chip_id_map chip_names[] = {
-+ { .mid = 0x1f, .pn = 0x1e82, .name = "AT32AP700x" },
-+};
-+#define NR_CHIP_NAMES ARRAY_SIZE(chip_names)
-+
- static const char *cpu_names[] = {
- "Morgan",
-- "AP7000",
-+ "AP7",
- };
- #define NR_CPU_NAMES ARRAY_SIZE(cpu_names)
-
-@@ -206,12 +218,32 @@
- "MPU"
- };
+ menu "Power management options"
-+static const char *cpu_feature_flags[] = {
-+ "rmw", "dsp", "simd", "ocd", "perfctr", "java", "fpu",
-+};
-+
-+static const char *get_chip_name(struct avr32_cpuinfo *cpu)
-+{
-+ unsigned int i;
-+ unsigned int mid = avr32_get_manufacturer_id(cpu);
-+ unsigned int pn = avr32_get_product_number(cpu);
-+
-+ for (i = 0; i < NR_CHIP_NAMES; i++) {
-+ if (chip_names[i].mid == mid && chip_names[i].pn == pn)
-+ return chip_names[i].name;
-+ }
++config ARCH_SUSPEND_POSSIBLE
++ def_bool y
+
-+ return "(unknown)";
-+}
++source "kernel/power/Kconfig"
+
- void __init setup_processor(void)
- {
- unsigned long config0, config1;
- unsigned long features;
- unsigned cpu_id, cpu_rev, arch_id, arch_rev, mmu_type;
-+ unsigned device_id;
- unsigned tmp;
-+ unsigned i;
-
- config0 = sysreg_read(CONFIG0);
- config1 = sysreg_read(CONFIG1);
-@@ -221,11 +253,14 @@
- arch_rev = SYSREG_BFEXT(AR, config0);
- mmu_type = SYSREG_BFEXT(MMUT, config0);
-
-+ device_id = ocd_read(DID);
-+
- boot_cpu_data.arch_type = arch_id;
- boot_cpu_data.cpu_type = cpu_id;
- boot_cpu_data.arch_revision = arch_rev;
- boot_cpu_data.cpu_revision = cpu_rev;
- boot_cpu_data.tlb_config = mmu_type;
-+ boot_cpu_data.device_id = device_id;
-
- tmp = SYSREG_BFEXT(ILSZ, config1);
- if (tmp) {
-@@ -247,41 +282,34 @@
- return;
- }
+ menu "CPU Frequency scaling"
-- printk ("CPU: %s [%02x] revision %d (%s revision %d)\n",
-+ printk ("CPU: %s chip revision %c\n", get_chip_name(&boot_cpu_data),
-+ avr32_get_chip_revision(&boot_cpu_data) + 'A');
-+ printk ("CPU: %s [%02x] core revision %d (%s arch revision %d)\n",
- cpu_names[cpu_id], cpu_id, cpu_rev,
- arch_names[arch_id], arch_rev);
- printk ("CPU: MMU configuration: %s\n", mmu_types[mmu_type]);
-
- printk ("CPU: features:");
- features = 0;
-- if (config0 & SYSREG_BIT(CONFIG0_R)) {
-+ if (config0 & SYSREG_BIT(CONFIG0_R))
- features |= AVR32_FEATURE_RMW;
-- printk(" rmw");
-- }
-- if (config0 & SYSREG_BIT(CONFIG0_D)) {
-+ if (config0 & SYSREG_BIT(CONFIG0_D))
- features |= AVR32_FEATURE_DSP;
-- printk(" dsp");
-- }
-- if (config0 & SYSREG_BIT(CONFIG0_S)) {
-+ if (config0 & SYSREG_BIT(CONFIG0_S))
- features |= AVR32_FEATURE_SIMD;
-- printk(" simd");
-- }
-- if (config0 & SYSREG_BIT(CONFIG0_O)) {
-+ if (config0 & SYSREG_BIT(CONFIG0_O))
- features |= AVR32_FEATURE_OCD;
-- printk(" ocd");
-- }
-- if (config0 & SYSREG_BIT(CONFIG0_P)) {
-+ if (config0 & SYSREG_BIT(CONFIG0_P))
- features |= AVR32_FEATURE_PCTR;
-- printk(" perfctr");
-- }
-- if (config0 & SYSREG_BIT(CONFIG0_J)) {
-+ if (config0 & SYSREG_BIT(CONFIG0_J))
- features |= AVR32_FEATURE_JAVA;
-- printk(" java");
-- }
-- if (config0 & SYSREG_BIT(CONFIG0_F)) {
-+ if (config0 & SYSREG_BIT(CONFIG0_F))
- features |= AVR32_FEATURE_FPU;
-- printk(" fpu");
-- }
-+
-+ for (i = 0; i < ARRAY_SIZE(cpu_feature_flags); i++)
-+ if (features & (1 << i))
-+ printk(" %s", cpu_feature_flags[i]);
+ source "drivers/cpufreq/Kconfig"
+diff --exclude=.git -urN linux-2.6.25.6/arch/avr32/kernel/avr32_ksyms.c avr32-2.6/arch/avr32/kernel/avr32_ksyms.c
+--- linux-2.6.25.6/arch/avr32/kernel/avr32_ksyms.c 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/avr32/kernel/avr32_ksyms.c 2008-06-12 15:03:55.883815569 +0200
+@@ -29,7 +29,9 @@
+ */
+ EXPORT_SYMBOL(memset);
+ EXPORT_SYMBOL(memcpy);
+
- printk("\n");
- boot_cpu_data.features = features;
- }
-@@ -291,6 +319,8 @@
- {
- unsigned int icache_size, dcache_size;
- unsigned int cpu = smp_processor_id();
-+ unsigned int freq;
-+ unsigned int i;
-
- icache_size = boot_cpu_data.icache.ways *
- boot_cpu_data.icache.sets *
-@@ -301,15 +331,21 @@
-
- seq_printf(m, "processor\t: %d\n", cpu);
-
-+ seq_printf(m, "chip type\t: %s revision %c\n",
-+ get_chip_name(&boot_cpu_data),
-+ avr32_get_chip_revision(&boot_cpu_data) + 'A');
- if (boot_cpu_data.arch_type < NR_ARCH_NAMES)
-- seq_printf(m, "cpu family\t: %s revision %d\n",
-+ seq_printf(m, "cpu arch\t: %s revision %d\n",
- arch_names[boot_cpu_data.arch_type],
- boot_cpu_data.arch_revision);
- if (boot_cpu_data.cpu_type < NR_CPU_NAMES)
-- seq_printf(m, "cpu type\t: %s revision %d\n",
-+ seq_printf(m, "cpu core\t: %s revision %d\n",
- cpu_names[boot_cpu_data.cpu_type],
- boot_cpu_data.cpu_revision);
-
-+ freq = (clk_get_rate(boot_cpu_data.clk) + 500) / 1000;
-+ seq_printf(m, "cpu MHz\t\t: %u.%03u\n", freq / 1000, freq % 1000);
-+
- seq_printf(m, "i-cache\t\t: %dK (%u ways x %u sets x %u)\n",
- icache_size >> 10,
- boot_cpu_data.icache.ways,
-@@ -320,7 +356,13 @@
- boot_cpu_data.dcache.ways,
- boot_cpu_data.dcache.sets,
- boot_cpu_data.dcache.linesz);
-- seq_printf(m, "bogomips\t: %lu.%02lu\n",
-+
-+ seq_printf(m, "features\t:");
-+ for (i = 0; i < ARRAY_SIZE(cpu_feature_flags); i++)
-+ if (boot_cpu_data.features & (1 << i))
-+ seq_printf(m, " %s", cpu_feature_flags[i]);
-+
-+ seq_printf(m, "\nbogomips\t: %lu.%02lu\n",
- boot_cpu_data.loops_per_jiffy / (500000/HZ),
- (boot_cpu_data.loops_per_jiffy / (5000/HZ)) % 100);
-
-@@ -343,7 +385,7 @@
-
- }
+ EXPORT_SYMBOL(clear_page);
++EXPORT_SYMBOL(copy_page);
--struct seq_operations cpuinfo_op = {
-+const struct seq_operations cpuinfo_op = {
- .start = c_start,
- .next = c_next,
- .stop = c_stop,
---- /dev/null
-+++ b/arch/avr32/kernel/dma-controller.c
+ /*
+ * Userspace access stuff.
+@@ -41,6 +43,8 @@
+ EXPORT_SYMBOL(__strncpy_from_user);
+ EXPORT_SYMBOL(clear_user);
+ EXPORT_SYMBOL(__clear_user);
++EXPORT_SYMBOL(strnlen_user);
++
+ EXPORT_SYMBOL(csum_partial);
+ EXPORT_SYMBOL(csum_partial_copy_generic);
+
+diff --exclude=.git -urN linux-2.6.25.6/arch/avr32/kernel/dma-controller.c avr32-2.6/arch/avr32/kernel/dma-controller.c
+--- linux-2.6.25.6/arch/avr32/kernel/dma-controller.c 1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/arch/avr32/kernel/dma-controller.c 2008-06-12 15:09:38.719815350 +0200
@@ -0,0 +1,34 @@
+/*
+ * Preliminary DMA controller framework for AVR32
+ return NULL;
+}
+EXPORT_SYMBOL(find_dma_controller);
---- a/arch/avr32/kernel/entry-avr32b.S
-+++ b/arch/avr32/kernel/entry-avr32b.S
+diff --exclude=.git -urN linux-2.6.25.6/arch/avr32/kernel/entry-avr32b.S avr32-2.6/arch/avr32/kernel/entry-avr32b.S
+--- linux-2.6.25.6/arch/avr32/kernel/entry-avr32b.S 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/avr32/kernel/entry-avr32b.S 2008-06-12 15:03:55.883815569 +0200
@@ -741,26 +741,6 @@
.section .irq.text,"ax",@progbits
.global irq_level0
.global irq_level1
.global irq_level2
---- a/arch/avr32/kernel/irq.c
-+++ b/arch/avr32/kernel/irq.c
-@@ -25,6 +25,17 @@
- printk("unexpected IRQ %u\n", irq);
- }
-
-+/* May be overridden by platform code */
-+int __weak nmi_enable(void)
-+{
-+ return -ENOSYS;
-+}
-+
-+void __weak nmi_disable(void)
-+{
-+
-+}
-+
- #ifdef CONFIG_PROC_FS
- int show_interrupts(struct seq_file *p, void *v)
- {
---- a/arch/avr32/kernel/kprobes.c
-+++ b/arch/avr32/kernel/kprobes.c
-@@ -48,6 +48,7 @@
- void __kprobes arch_arm_kprobe(struct kprobe *p)
- {
- pr_debug("arming kprobe at %p\n", p->addr);
-+ ocd_enable(NULL);
- *p->addr = BREAKPOINT_INSTRUCTION;
- flush_icache_range((unsigned long)p->addr,
- (unsigned long)p->addr + sizeof(kprobe_opcode_t));
-@@ -56,6 +57,7 @@
- void __kprobes arch_disarm_kprobe(struct kprobe *p)
- {
- pr_debug("disarming kprobe at %p\n", p->addr);
-+ ocd_disable(NULL);
- *p->addr = p->opcode;
- flush_icache_range((unsigned long)p->addr,
- (unsigned long)p->addr + sizeof(kprobe_opcode_t));
-@@ -260,9 +262,6 @@
-
- int __init arch_init_kprobes(void)
- {
-- printk("KPROBES: Enabling monitor mode (MM|DBE)...\n");
-- ocd_write(DC, (1 << OCD_DC_MM_BIT) | (1 << OCD_DC_DBE_BIT));
--
- /* TODO: Register kretprobe trampoline */
- return 0;
- }
---- a/arch/avr32/kernel/Makefile
-+++ b/arch/avr32/kernel/Makefile
-@@ -6,9 +6,11 @@
-
- obj-$(CONFIG_SUBARCH_AVR32B) += entry-avr32b.o
- obj-y += syscall_table.o syscall-stubs.o irq.o
--obj-y += setup.o traps.o semaphore.o ptrace.o
-+obj-y += setup.o traps.o semaphore.o ocd.o ptrace.o
+diff --exclude=.git -urN linux-2.6.25.6/arch/avr32/kernel/Makefile avr32-2.6/arch/avr32/kernel/Makefile
+--- linux-2.6.25.6/arch/avr32/kernel/Makefile 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/avr32/kernel/Makefile 2008-06-12 15:09:38.719815350 +0200
+@@ -9,6 +9,7 @@
+ obj-y += setup.o traps.o semaphore.o ocd.o ptrace.o
obj-y += signal.o sys_avr32.o process.o time.o
obj-y += init_task.o switch_to.o cpu.o
+obj-y += dma-controller.o
obj-$(CONFIG_MODULES) += module.o avr32_ksyms.o
obj-$(CONFIG_KPROBES) += kprobes.o
obj-$(CONFIG_STACKTRACE) += stacktrace.o
-+obj-$(CONFIG_NMI_DEBUGGING) += nmi_debug.o
---- /dev/null
-+++ b/arch/avr32/kernel/nmi_debug.c
-@@ -0,0 +1,82 @@
-+/*
-+ * Copyright (C) 2007 Atmel Corporation
-+ *
-+ * This program is free software; you can redistribute it and/or modify
-+ * it under the terms of the GNU General Public License version 2 as
-+ * published by the Free Software Foundation.
-+ */
-+#include <linux/delay.h>
-+#include <linux/kdebug.h>
-+#include <linux/notifier.h>
-+#include <linux/sched.h>
-+
-+#include <asm/irq.h>
-+
-+enum nmi_action {
-+ NMI_SHOW_STATE = 1 << 0,
-+ NMI_SHOW_REGS = 1 << 1,
-+ NMI_DIE = 1 << 2,
-+ NMI_DEBOUNCE = 1 << 3,
-+};
-+
-+static unsigned long nmi_actions;
-+
-+static int nmi_debug_notify(struct notifier_block *self,
-+ unsigned long val, void *data)
-+{
-+ struct die_args *args = data;
-+
-+ if (likely(val != DIE_NMI))
-+ return NOTIFY_DONE;
-+
-+ if (nmi_actions & NMI_SHOW_STATE)
-+ show_state();
-+ if (nmi_actions & NMI_SHOW_REGS)
-+ show_regs(args->regs);
-+ if (nmi_actions & NMI_DEBOUNCE)
-+ mdelay(10);
-+ if (nmi_actions & NMI_DIE)
-+ return NOTIFY_BAD;
-+
-+ return NOTIFY_OK;
-+}
-+
-+static struct notifier_block nmi_debug_nb = {
-+ .notifier_call = nmi_debug_notify,
-+};
-+
-+static int __init nmi_debug_setup(char *str)
-+{
-+ char *p, *sep;
-+
-+ register_die_notifier(&nmi_debug_nb);
-+ if (nmi_enable()) {
-+ printk(KERN_WARNING "Unable to enable NMI.\n");
-+ return 0;
-+ }
-+
-+ if (*str != '=')
-+ return 0;
-+
-+ for (p = str + 1; *p; p = sep + 1) {
-+ sep = strchr(p, ',');
-+ if (sep)
-+ *sep = 0;
-+ if (strcmp(p, "state") == 0)
-+ nmi_actions |= NMI_SHOW_STATE;
-+ else if (strcmp(p, "regs") == 0)
-+ nmi_actions |= NMI_SHOW_REGS;
-+ else if (strcmp(p, "debounce") == 0)
-+ nmi_actions |= NMI_DEBOUNCE;
-+ else if (strcmp(p, "die") == 0)
-+ nmi_actions |= NMI_DIE;
-+ else
-+ printk(KERN_WARNING "NMI: Unrecognized action `%s'\n",
-+ p);
-+ if (!sep)
-+ break;
-+ }
-+
-+ return 0;
-+}
-+__setup("nmi_debug", nmi_debug_setup);
---- /dev/null
-+++ b/arch/avr32/kernel/ocd.c
-@@ -0,0 +1,163 @@
-+/*
-+ * Copyright (C) 2007 Atmel Corporation
-+ *
-+ * This program is free software; you can redistribute it and/or modify
-+ * it under the terms of the GNU General Public License version 2 as
-+ * published by the Free Software Foundation.
-+ */
-+#include <linux/init.h>
-+#include <linux/sched.h>
-+#include <linux/spinlock.h>
-+
-+#include <asm/ocd.h>
-+
-+static long ocd_count;
-+static spinlock_t ocd_lock;
-+
-+/**
-+ * ocd_enable - enable on-chip debugging
-+ * @child: task to be debugged
-+ *
-+ * If @child is non-NULL, ocd_enable() first checks if debugging has
-+ * already been enabled for @child, and if it has, does nothing.
-+ *
-+ * If @child is NULL (e.g. when debugging the kernel), or debugging
-+ * has not already been enabled for it, ocd_enable() increments the
-+ * reference count and enables the debugging hardware.
-+ */
-+void ocd_enable(struct task_struct *child)
-+{
-+ u32 dc;
-+
-+ if (child)
-+ pr_debug("ocd_enable: child=%s [%u]\n",
-+ child->comm, child->pid);
-+ else
-+ pr_debug("ocd_enable (no child)\n");
-+
-+ if (!child || !test_and_set_tsk_thread_flag(child, TIF_DEBUG)) {
-+ spin_lock(&ocd_lock);
-+ ocd_count++;
-+ dc = ocd_read(DC);
-+ dc |= (1 << OCD_DC_MM_BIT) | (1 << OCD_DC_DBE_BIT);
-+ ocd_write(DC, dc);
-+ spin_unlock(&ocd_lock);
-+ }
-+}
-+
-+/**
-+ * ocd_disable - disable on-chip debugging
-+ * @child: task that was being debugged, but isn't anymore
-+ *
-+ * If @child is non-NULL, ocd_disable() checks if debugging is enabled
-+ * for @child, and if it isn't, does nothing.
-+ *
-+ * If @child is NULL (e.g. when debugging the kernel), or debugging is
-+ * enabled, ocd_disable() decrements the reference count, and if it
-+ * reaches zero, disables the debugging hardware.
-+ */
-+void ocd_disable(struct task_struct *child)
-+{
-+ u32 dc;
-+
-+ if (!child)
-+ pr_debug("ocd_disable (no child)\n");
-+ else if (test_tsk_thread_flag(child, TIF_DEBUG))
-+ pr_debug("ocd_disable: child=%s [%u]\n",
-+ child->comm, child->pid);
-+
-+ if (!child || test_and_clear_tsk_thread_flag(child, TIF_DEBUG)) {
-+ spin_lock(&ocd_lock);
-+ ocd_count--;
-+
-+ WARN_ON(ocd_count < 0);
-+
-+ if (ocd_count <= 0) {
-+ dc = ocd_read(DC);
-+ dc &= ~((1 << OCD_DC_MM_BIT) | (1 << OCD_DC_DBE_BIT));
-+ ocd_write(DC, dc);
-+ }
-+ spin_unlock(&ocd_lock);
-+ }
-+}
-+
-+#ifdef CONFIG_DEBUG_FS
-+#include <linux/debugfs.h>
-+#include <linux/module.h>
-+
-+static struct dentry *ocd_debugfs_root;
-+static struct dentry *ocd_debugfs_DC;
-+static struct dentry *ocd_debugfs_DS;
-+static struct dentry *ocd_debugfs_count;
-+
-+static u64 ocd_DC_get(void *data)
-+{
-+ return ocd_read(DC);
-+}
-+static void ocd_DC_set(void *data, u64 val)
-+{
-+ ocd_write(DC, val);
-+}
-+DEFINE_SIMPLE_ATTRIBUTE(fops_DC, ocd_DC_get, ocd_DC_set, "0x%08llx\n");
-+
-+static u64 ocd_DS_get(void *data)
-+{
-+ return ocd_read(DS);
-+}
-+DEFINE_SIMPLE_ATTRIBUTE(fops_DS, ocd_DS_get, NULL, "0x%08llx\n");
-+
-+static u64 ocd_count_get(void *data)
-+{
-+ return ocd_count;
-+}
-+DEFINE_SIMPLE_ATTRIBUTE(fops_count, ocd_count_get, NULL, "%lld\n");
-+
-+static void ocd_debugfs_init(void)
-+{
-+ struct dentry *root;
-+
-+ root = debugfs_create_dir("ocd", NULL);
-+ if (IS_ERR(root) || !root)
-+ goto err_root;
-+ ocd_debugfs_root = root;
-+
-+ ocd_debugfs_DC = debugfs_create_file("DC", S_IRUSR | S_IWUSR,
-+ root, NULL, &fops_DC);
-+ if (!ocd_debugfs_DC)
-+ goto err_DC;
-+
-+ ocd_debugfs_DS = debugfs_create_file("DS", S_IRUSR, root,
-+ NULL, &fops_DS);
-+ if (!ocd_debugfs_DS)
-+ goto err_DS;
-+
-+ ocd_debugfs_count = debugfs_create_file("count", S_IRUSR, root,
-+ NULL, &fops_count);
-+ if (!ocd_debugfs_count)
-+ goto err_count;
-+
-+ return;
-+
-+err_count:
-+ debugfs_remove(ocd_debugfs_DS);
-+err_DS:
-+ debugfs_remove(ocd_debugfs_DC);
-+err_DC:
-+ debugfs_remove(ocd_debugfs_root);
-+err_root:
-+ printk(KERN_WARNING "OCD: Failed to create debugfs entries\n");
-+}
-+#else
-+static inline void ocd_debugfs_init(void)
-+{
-+
-+}
-+#endif
-+
-+static int __init ocd_init(void)
-+{
-+ spin_lock_init(&ocd_lock);
-+ ocd_debugfs_init();
-+ return 0;
-+}
-+arch_initcall(ocd_init);
---- a/arch/avr32/kernel/process.c
-+++ b/arch/avr32/kernel/process.c
-@@ -11,17 +11,18 @@
- #include <linux/fs.h>
- #include <linux/ptrace.h>
- #include <linux/reboot.h>
-+#include <linux/tick.h>
- #include <linux/uaccess.h>
- #include <linux/unistd.h>
-
- #include <asm/sysreg.h>
- #include <asm/ocd.h>
-
-+#include <asm/arch/pm.h>
+diff --exclude=.git -urN linux-2.6.25.6/arch/avr32/kernel/process.c avr32-2.6/arch/avr32/kernel/process.c
+--- linux-2.6.25.6/arch/avr32/kernel/process.c 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/avr32/kernel/process.c 2008-06-12 15:03:55.887814682 +0200
+@@ -18,11 +18,11 @@
+ #include <asm/sysreg.h>
+ #include <asm/ocd.h>
+
++#include <asm/arch/pm.h>
+
void (*pm_power_off)(void) = NULL;
EXPORT_SYMBOL(pm_power_off);
/*
* This file handles the architecture-dependent parts of process handling..
*/
-@@ -30,8 +31,10 @@
- {
- /* endless idle loop with no priority at all */
- while (1) {
-+ tick_nohz_stop_sched_tick();
- while (!need_resched())
- cpu_idle_sleep();
-+ tick_nohz_restart_sched_tick();
- preempt_enable_no_resched();
- schedule();
- preempt_disable();
-@@ -103,7 +106,7 @@
- */
- void exit_thread(void)
- {
-- /* nothing to do */
-+ ocd_disable(current);
- }
-
- void flush_thread(void)
-@@ -345,6 +348,10 @@
- p->thread.cpu_context.ksp = (unsigned long)childregs;
- p->thread.cpu_context.pc = (unsigned long)ret_from_fork;
+@@ -54,6 +54,8 @@
-+ clear_tsk_thread_flag(p, TIF_DEBUG);
-+ if ((clone_flags & CLONE_PTRACE) && test_thread_flag(TIF_DEBUG))
-+ ocd_enable(p);
-+
- return 0;
- }
-
---- a/arch/avr32/kernel/ptrace.c
-+++ b/arch/avr32/kernel/ptrace.c
-@@ -58,6 +58,7 @@
+ void machine_power_off(void)
{
- clear_tsk_thread_flag(child, TIF_SINGLE_STEP);
- clear_tsk_thread_flag(child, TIF_BREAKPOINT);
-+ ocd_disable(child);
++ if (pm_power_off)
++ pm_power_off();
}
- /*
-@@ -144,10 +145,6 @@
- {
- int ret;
-
-- pr_debug("ptrace: Enabling monitor mode...\n");
-- ocd_write(DC, ocd_read(DC) | (1 << OCD_DC_MM_BIT)
-- | (1 << OCD_DC_DBE_BIT));
--
- switch (request) {
- /* Read the word at location addr in the child process */
- case PTRACE_PEEKTEXT:
---- a/arch/avr32/kernel/setup.c
-+++ b/arch/avr32/kernel/setup.c
-@@ -273,6 +273,8 @@
+ void machine_restart(char *cmd)
+diff --exclude=.git -urN linux-2.6.25.6/arch/avr32/kernel/setup.c avr32-2.6/arch/avr32/kernel/setup.c
+--- linux-2.6.25.6/arch/avr32/kernel/setup.c 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/avr32/kernel/setup.c 2008-06-12 15:03:55.887814682 +0200
+@@ -274,6 +274,8 @@
printk(KERN_WARNING
"Failed to allocate framebuffer memory\n");
fbmem_size = 0;
}
}
---- a/arch/avr32/kernel/signal.c
-+++ b/arch/avr32/kernel/signal.c
-@@ -270,19 +270,12 @@
- if (!user_mode(regs))
- return 0;
+diff --exclude=.git -urN linux-2.6.25.6/arch/avr32/kernel/signal.c avr32-2.6/arch/avr32/kernel/signal.c
+--- linux-2.6.25.6/arch/avr32/kernel/signal.c 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/avr32/kernel/signal.c 2008-06-12 15:09:38.719815350 +0200
+@@ -93,6 +93,9 @@
+ if (restore_sigcontext(regs, &frame->uc.uc_mcontext))
+ goto badframe;
-- if (try_to_freeze()) {
-- signr = 0;
-- if (!signal_pending(current))
-- goto no_signal;
-- }
--
- if (test_thread_flag(TIF_RESTORE_SIGMASK))
- oldset = ¤t->saved_sigmask;
- else if (!oldset)
- oldset = ¤t->blocked;
-
- signr = get_signal_to_deliver(&info, &ka, regs, NULL);
--no_signal:
- if (syscall) {
- switch (regs->r12) {
- case -ERESTART_RESTARTBLOCK:
---- a/arch/avr32/kernel/time.c
-+++ b/arch/avr32/kernel/time.c
++ if (do_sigaltstack(&frame->uc.uc_stack, NULL, regs->sp) == -EFAULT)
++ goto badframe;
++
+ pr_debug("Context restored: pc = %08lx, lr = %08lx, sp = %08lx\n",
+ regs->pc, regs->lr, regs->sp);
+
+diff --exclude=.git -urN linux-2.6.25.6/arch/avr32/kernel/time.c avr32-2.6/arch/avr32/kernel/time.c
+--- linux-2.6.25.6/arch/avr32/kernel/time.c 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/avr32/kernel/time.c 2008-06-12 15:03:55.887814682 +0200
@@ -1,16 +1,12 @@
/*
* Copyright (C) 2004-2007 Atmel Corporation
+ comparator.min_delta_ns = clockevent_delta2ns(50, &comparator) + 1;
-static struct sysdev_class timer_class = {
-- set_kset_name("timer"),
+- .name = "timer",
-};
+ sysreg_write(COMPARE, 0);
+ timer_irqaction.dev_id = &comparator;
}
-
-device_initcall(init_timer_sysfs);
---- a/arch/avr32/kernel/traps.c
-+++ b/arch/avr32/kernel/traps.c
-@@ -9,6 +9,7 @@
- #include <linux/bug.h>
+diff --exclude=.git -urN linux-2.6.25.6/arch/avr32/lib/io-readsb.S avr32-2.6/arch/avr32/lib/io-readsb.S
+--- linux-2.6.25.6/arch/avr32/lib/io-readsb.S 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/avr32/lib/io-readsb.S 2008-06-12 15:09:38.719815350 +0200
+@@ -41,7 +41,7 @@
+ 2: sub r10, -4
+ reteq r12
+
+-3: ld.uh r8, r12[0]
++3: ld.ub r8, r12[0]
+ sub r10, 1
+ st.b r11++, r8
+ brne 3b
+diff --exclude=.git -urN linux-2.6.25.6/arch/avr32/mach-at32ap/at32ap700x.c avr32-2.6/arch/avr32/mach-at32ap/at32ap700x.c
+--- linux-2.6.25.6/arch/avr32/mach-at32ap/at32ap700x.c 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/avr32/mach-at32ap/at32ap700x.c 2008-06-12 15:09:38.723815860 +0200
+@@ -6,11 +6,13 @@
+ * published by the Free Software Foundation.
+ */
+ #include <linux/clk.h>
++#include <linux/delay.h>
+ #include <linux/fb.h>
#include <linux/init.h>
- #include <linux/kallsyms.h>
-+#include <linux/kdebug.h>
- #include <linux/module.h>
- #include <linux/notifier.h>
- #include <linux/sched.h>
-@@ -107,9 +108,23 @@
+ #include <linux/platform_device.h>
+ #include <linux/dma-mapping.h>
+ #include <linux/spi/spi.h>
++#include <linux/usb/atmel_usba_udc.h>
- asmlinkage void do_nmi(unsigned long ecr, struct pt_regs *regs)
- {
-- printk(KERN_ALERT "Got Non-Maskable Interrupt, dumping regs\n");
-- show_regs_log_lvl(regs, KERN_ALERT);
-- show_stack_log_lvl(current, regs->sp, regs, KERN_ALERT);
-+ int ret;
-+
-+ nmi_enter();
-+
-+ ret = notify_die(DIE_NMI, "NMI", regs, 0, ecr, SIGINT);
-+ switch (ret) {
-+ case NOTIFY_OK:
-+ case NOTIFY_STOP:
-+ return;
-+ case NOTIFY_BAD:
-+ die("Fatal Non-Maskable Interrupt", regs, SIGINT);
-+ default:
-+ break;
-+ }
-+
-+ printk(KERN_ALERT "Got NMI, but nobody cared. Disabling...\n");
-+ nmi_disable();
- }
+ #include <asm/io.h>
+ #include <asm/irq.h>
+@@ -18,6 +20,7 @@
+ #include <asm/arch/at32ap700x.h>
+ #include <asm/arch/board.h>
+ #include <asm/arch/portmux.h>
++#include <asm/arch/sram.h>
+
+ #include <video/atmel_lcdc.h>
+
+@@ -91,25 +94,18 @@
+
+ static DEFINE_SPINLOCK(pm_lock);
- asmlinkage void do_critical_exception(unsigned long ecr, struct pt_regs *regs)
---- a/arch/avr32/mach-at32ap/at32ap7000.c
-+++ /dev/null
-@@ -1,1730 +0,0 @@
--/*
-- * Copyright (C) 2005-2006 Atmel Corporation
-- *
-- * This program is free software; you can redistribute it and/or modify
-- * it under the terms of the GNU General Public License version 2 as
-- * published by the Free Software Foundation.
-- */
--#include <linux/clk.h>
--#include <linux/fb.h>
--#include <linux/init.h>
--#include <linux/platform_device.h>
--#include <linux/dma-mapping.h>
--#include <linux/spi/spi.h>
--
--#include <asm/io.h>
--
--#include <asm/arch/at32ap7000.h>
--#include <asm/arch/board.h>
--#include <asm/arch/portmux.h>
--
--#include <video/atmel_lcdc.h>
--
--#include "clock.h"
--#include "hmatrix.h"
--#include "pio.h"
--#include "pm.h"
--
--
--#define PBMEM(base) \
-- { \
-- .start = base, \
-- .end = base + 0x3ff, \
-- .flags = IORESOURCE_MEM, \
-- }
--#define IRQ(num) \
-- { \
-- .start = num, \
-- .end = num, \
-- .flags = IORESOURCE_IRQ, \
-- }
--#define NAMED_IRQ(num, _name) \
-- { \
-- .start = num, \
-- .end = num, \
-- .name = _name, \
-- .flags = IORESOURCE_IRQ, \
-- }
--
--/* REVISIT these assume *every* device supports DMA, but several
-- * don't ... tc, smc, pio, rtc, watchdog, pwm, ps2, and more.
-- */
--#define DEFINE_DEV(_name, _id) \
--static u64 _name##_id##_dma_mask = DMA_32BIT_MASK; \
--static struct platform_device _name##_id##_device = { \
-- .name = #_name, \
-- .id = _id, \
-- .dev = { \
-- .dma_mask = &_name##_id##_dma_mask, \
-- .coherent_dma_mask = DMA_32BIT_MASK, \
-- }, \
-- .resource = _name##_id##_resource, \
-- .num_resources = ARRAY_SIZE(_name##_id##_resource), \
--}
--#define DEFINE_DEV_DATA(_name, _id) \
--static u64 _name##_id##_dma_mask = DMA_32BIT_MASK; \
--static struct platform_device _name##_id##_device = { \
-- .name = #_name, \
-- .id = _id, \
-- .dev = { \
-- .dma_mask = &_name##_id##_dma_mask, \
-- .platform_data = &_name##_id##_data, \
-- .coherent_dma_mask = DMA_32BIT_MASK, \
-- }, \
-- .resource = _name##_id##_resource, \
-- .num_resources = ARRAY_SIZE(_name##_id##_resource), \
--}
--
--#define select_peripheral(pin, periph, flags) \
-- at32_select_periph(GPIO_PIN_##pin, GPIO_##periph, flags)
--
--#define DEV_CLK(_name, devname, bus, _index) \
--static struct clk devname##_##_name = { \
-- .name = #_name, \
-- .dev = &devname##_device.dev, \
-- .parent = &bus##_clk, \
-- .mode = bus##_clk_mode, \
-- .get_rate = bus##_clk_get_rate, \
-- .index = _index, \
--}
--
--static DEFINE_SPINLOCK(pm_lock);
--
-unsigned long at32ap7000_osc_rates[3] = {
- [0] = 32768,
- /* FIXME: these are ATSTK1002-specific */
- [1] = 20000000,
- [2] = 12000000,
-};
--
--static unsigned long osc_get_rate(struct clk *clk)
--{
++static struct clk osc0;
++static struct clk osc1;
+
+ static unsigned long osc_get_rate(struct clk *clk)
+ {
- return at32ap7000_osc_rates[clk->index];
--}
--
--static unsigned long pll_get_rate(struct clk *clk, unsigned long control)
--{
-- unsigned long div, mul, rate;
--
++ return at32_board_osc_rates[clk->index];
+ }
+
+ static unsigned long pll_get_rate(struct clk *clk, unsigned long control)
+ {
+ unsigned long div, mul, rate;
+
- if (!(control & PM_BIT(PLLEN)))
- return 0;
-
-- div = PM_BFEXT(PLLDIV, control) + 1;
-- mul = PM_BFEXT(PLLMUL, control) + 1;
--
-- rate = clk->parent->get_rate(clk->parent);
-- rate = (rate + div / 2) / div;
-- rate *= mul;
--
-- return rate;
--}
--
--static unsigned long pll0_get_rate(struct clk *clk)
--{
-- u32 control;
--
-- control = pm_readl(PLL0);
--
-- return pll_get_rate(clk, control);
--}
--
--static unsigned long pll1_get_rate(struct clk *clk)
--{
-- u32 control;
--
-- control = pm_readl(PLL1);
--
-- return pll_get_rate(clk, control);
--}
--
--/*
-- * The AT32AP7000 has five primary clock sources: One 32kHz
-- * oscillator, two crystal oscillators and two PLLs.
-- */
--static struct clk osc32k = {
-- .name = "osc32k",
-- .get_rate = osc_get_rate,
-- .users = 1,
-- .index = 0,
--};
--static struct clk osc0 = {
-- .name = "osc0",
-- .get_rate = osc_get_rate,
-- .users = 1,
-- .index = 1,
--};
--static struct clk osc1 = {
-- .name = "osc1",
-- .get_rate = osc_get_rate,
-- .index = 2,
--};
--static struct clk pll0 = {
-- .name = "pll0",
-- .get_rate = pll0_get_rate,
-- .parent = &osc0,
--};
--static struct clk pll1 = {
-- .name = "pll1",
-- .get_rate = pll1_get_rate,
-- .parent = &osc0,
--};
--
--/*
-- * The main clock can be either osc0 or pll0. The boot loader may
-- * have chosen one for us, so we don't really know which one until we
-- * have a look at the SM.
-- */
--static struct clk *main_clock;
--
--/*
-- * Synchronous clocks are generated from the main clock. The clocks
-- * must satisfy the constraint
-- * fCPU >= fHSB >= fPB
-- * i.e. each clock must not be faster than its parent.
-- */
--static unsigned long bus_clk_get_rate(struct clk *clk, unsigned int shift)
--{
-- return main_clock->get_rate(main_clock) >> shift;
--};
--
--static void cpu_clk_mode(struct clk *clk, int enabled)
--{
-- unsigned long flags;
-- u32 mask;
--
-- spin_lock_irqsave(&pm_lock, flags);
-- mask = pm_readl(CPU_MASK);
-- if (enabled)
-- mask |= 1 << clk->index;
-- else
-- mask &= ~(1 << clk->index);
-- pm_writel(CPU_MASK, mask);
-- spin_unlock_irqrestore(&pm_lock, flags);
--}
--
--static unsigned long cpu_clk_get_rate(struct clk *clk)
--{
-- unsigned long cksel, shift = 0;
--
-- cksel = pm_readl(CKSEL);
-- if (cksel & PM_BIT(CPUDIV))
-- shift = PM_BFEXT(CPUSEL, cksel) + 1;
--
-- return bus_clk_get_rate(clk, shift);
--}
--
--static long cpu_clk_set_rate(struct clk *clk, unsigned long rate, int apply)
--{
-- u32 control;
-- unsigned long parent_rate, child_div, actual_rate, div;
--
-- parent_rate = clk->parent->get_rate(clk->parent);
-- control = pm_readl(CKSEL);
--
-- if (control & PM_BIT(HSBDIV))
-- child_div = 1 << (PM_BFEXT(HSBSEL, control) + 1);
-- else
-- child_div = 1;
--
-- if (rate > 3 * (parent_rate / 4) || child_div == 1) {
-- actual_rate = parent_rate;
-- control &= ~PM_BIT(CPUDIV);
-- } else {
-- unsigned int cpusel;
-- div = (parent_rate + rate / 2) / rate;
-- if (div > child_div)
-- div = child_div;
-- cpusel = (div > 1) ? (fls(div) - 2) : 0;
-- control = PM_BIT(CPUDIV) | PM_BFINS(CPUSEL, cpusel, control);
-- actual_rate = parent_rate / (1 << (cpusel + 1));
-- }
--
-- pr_debug("clk %s: new rate %lu (actual rate %lu)\n",
-- clk->name, rate, actual_rate);
--
-- if (apply)
-- pm_writel(CKSEL, control);
--
-- return actual_rate;
--}
--
--static void hsb_clk_mode(struct clk *clk, int enabled)
--{
-- unsigned long flags;
-- u32 mask;
--
-- spin_lock_irqsave(&pm_lock, flags);
-- mask = pm_readl(HSB_MASK);
-- if (enabled)
-- mask |= 1 << clk->index;
-- else
-- mask &= ~(1 << clk->index);
-- pm_writel(HSB_MASK, mask);
-- spin_unlock_irqrestore(&pm_lock, flags);
--}
--
--static unsigned long hsb_clk_get_rate(struct clk *clk)
--{
-- unsigned long cksel, shift = 0;
--
-- cksel = pm_readl(CKSEL);
-- if (cksel & PM_BIT(HSBDIV))
-- shift = PM_BFEXT(HSBSEL, cksel) + 1;
--
-- return bus_clk_get_rate(clk, shift);
--}
--
--static void pba_clk_mode(struct clk *clk, int enabled)
--{
-- unsigned long flags;
-- u32 mask;
--
-- spin_lock_irqsave(&pm_lock, flags);
-- mask = pm_readl(PBA_MASK);
-- if (enabled)
-- mask |= 1 << clk->index;
-- else
-- mask &= ~(1 << clk->index);
-- pm_writel(PBA_MASK, mask);
-- spin_unlock_irqrestore(&pm_lock, flags);
--}
--
--static unsigned long pba_clk_get_rate(struct clk *clk)
--{
-- unsigned long cksel, shift = 0;
--
-- cksel = pm_readl(CKSEL);
-- if (cksel & PM_BIT(PBADIV))
-- shift = PM_BFEXT(PBASEL, cksel) + 1;
--
-- return bus_clk_get_rate(clk, shift);
--}
--
--static void pbb_clk_mode(struct clk *clk, int enabled)
--{
-- unsigned long flags;
-- u32 mask;
--
-- spin_lock_irqsave(&pm_lock, flags);
-- mask = pm_readl(PBB_MASK);
-- if (enabled)
-- mask |= 1 << clk->index;
-- else
-- mask &= ~(1 << clk->index);
-- pm_writel(PBB_MASK, mask);
-- spin_unlock_irqrestore(&pm_lock, flags);
--}
--
--static unsigned long pbb_clk_get_rate(struct clk *clk)
--{
-- unsigned long cksel, shift = 0;
--
-- cksel = pm_readl(CKSEL);
-- if (cksel & PM_BIT(PBBDIV))
-- shift = PM_BFEXT(PBBSEL, cksel) + 1;
--
-- return bus_clk_get_rate(clk, shift);
--}
--
--static struct clk cpu_clk = {
-- .name = "cpu",
-- .get_rate = cpu_clk_get_rate,
-- .set_rate = cpu_clk_set_rate,
-- .users = 1,
--};
--static struct clk hsb_clk = {
-- .name = "hsb",
-- .parent = &cpu_clk,
-- .get_rate = hsb_clk_get_rate,
--};
--static struct clk pba_clk = {
-- .name = "pba",
-- .parent = &hsb_clk,
-- .mode = hsb_clk_mode,
-- .get_rate = pba_clk_get_rate,
-- .index = 1,
--};
--static struct clk pbb_clk = {
-- .name = "pbb",
-- .parent = &hsb_clk,
-- .mode = hsb_clk_mode,
-- .get_rate = pbb_clk_get_rate,
-- .users = 1,
-- .index = 2,
--};
--
--/* --------------------------------------------------------------------
-- * Generic Clock operations
-- * -------------------------------------------------------------------- */
--
--static void genclk_mode(struct clk *clk, int enabled)
--{
-- u32 control;
--
-- control = pm_readl(GCCTRL(clk->index));
-- if (enabled)
-- control |= PM_BIT(CEN);
-- else
-- control &= ~PM_BIT(CEN);
-- pm_writel(GCCTRL(clk->index), control);
--}
--
--static unsigned long genclk_get_rate(struct clk *clk)
--{
-- u32 control;
-- unsigned long div = 1;
--
-- control = pm_readl(GCCTRL(clk->index));
-- if (control & PM_BIT(DIVEN))
-- div = 2 * (PM_BFEXT(DIV, control) + 1);
--
-- return clk->parent->get_rate(clk->parent) / div;
--}
--
--static long genclk_set_rate(struct clk *clk, unsigned long rate, int apply)
--{
-- u32 control;
-- unsigned long parent_rate, actual_rate, div;
--
-- parent_rate = clk->parent->get_rate(clk->parent);
-- control = pm_readl(GCCTRL(clk->index));
--
-- if (rate > 3 * parent_rate / 4) {
-- actual_rate = parent_rate;
-- control &= ~PM_BIT(DIVEN);
-- } else {
-- div = (parent_rate + rate) / (2 * rate) - 1;
-- control = PM_BFINS(DIV, div, control) | PM_BIT(DIVEN);
-- actual_rate = parent_rate / (2 * (div + 1));
-- }
--
-- dev_dbg(clk->dev, "clk %s: new rate %lu (actual rate %lu)\n",
-- clk->name, rate, actual_rate);
--
-- if (apply)
-- pm_writel(GCCTRL(clk->index), control);
--
-- return actual_rate;
--}
--
--int genclk_set_parent(struct clk *clk, struct clk *parent)
--{
-- u32 control;
--
-- dev_dbg(clk->dev, "clk %s: new parent %s (was %s)\n",
-- clk->name, parent->name, clk->parent->name);
--
-- control = pm_readl(GCCTRL(clk->index));
--
-- if (parent == &osc1 || parent == &pll1)
-- control |= PM_BIT(OSCSEL);
-- else if (parent == &osc0 || parent == &pll0)
-- control &= ~PM_BIT(OSCSEL);
-- else
-- return -EINVAL;
--
-- if (parent == &pll0 || parent == &pll1)
-- control |= PM_BIT(PLLSEL);
-- else
-- control &= ~PM_BIT(PLLSEL);
--
-- pm_writel(GCCTRL(clk->index), control);
-- clk->parent = parent;
--
-- return 0;
--}
--
--static void __init genclk_init_parent(struct clk *clk)
--{
-- u32 control;
-- struct clk *parent;
--
-- BUG_ON(clk->index > 7);
--
-- control = pm_readl(GCCTRL(clk->index));
-- if (control & PM_BIT(OSCSEL))
-- parent = (control & PM_BIT(PLLSEL)) ? &pll1 : &osc1;
-- else
-- parent = (control & PM_BIT(PLLSEL)) ? &pll0 : &osc0;
--
-- clk->parent = parent;
--}
--
--/* --------------------------------------------------------------------
-- * System peripherals
-- * -------------------------------------------------------------------- */
--static struct resource at32_pm0_resource[] = {
-- {
-- .start = 0xfff00000,
-- .end = 0xfff0007f,
-- .flags = IORESOURCE_MEM,
-- },
-- IRQ(20),
--};
--
--static struct resource at32ap700x_rtc0_resource[] = {
-- {
-- .start = 0xfff00080,
-- .end = 0xfff000af,
-- .flags = IORESOURCE_MEM,
-- },
-- IRQ(21),
--};
--
--static struct resource at32_wdt0_resource[] = {
-- {
-- .start = 0xfff000b0,
-- .end = 0xfff000cf,
-- .flags = IORESOURCE_MEM,
-- },
--};
--
--static struct resource at32_eic0_resource[] = {
-- {
-- .start = 0xfff00100,
-- .end = 0xfff0013f,
-- .flags = IORESOURCE_MEM,
-- },
-- IRQ(19),
--};
--
--DEFINE_DEV(at32_pm, 0);
--DEFINE_DEV(at32ap700x_rtc, 0);
--DEFINE_DEV(at32_wdt, 0);
--DEFINE_DEV(at32_eic, 0);
--
--/*
-- * Peripheral clock for PM, RTC, WDT and EIC. PM will ensure that this
-- * is always running.
-- */
--static struct clk at32_pm_pclk = {
-- .name = "pclk",
-- .dev = &at32_pm0_device.dev,
-- .parent = &pbb_clk,
-- .mode = pbb_clk_mode,
-- .get_rate = pbb_clk_get_rate,
-- .users = 1,
-- .index = 0,
--};
--
--static struct resource intc0_resource[] = {
-- PBMEM(0xfff00400),
--};
--struct platform_device at32_intc0_device = {
-- .name = "intc",
-- .id = 0,
-- .resource = intc0_resource,
-- .num_resources = ARRAY_SIZE(intc0_resource),
--};
--DEV_CLK(pclk, at32_intc0, pbb, 1);
--
--static struct clk ebi_clk = {
-- .name = "ebi",
-- .parent = &hsb_clk,
-- .mode = hsb_clk_mode,
-- .get_rate = hsb_clk_get_rate,
-- .users = 1,
--};
--static struct clk hramc_clk = {
-- .name = "hramc",
-- .parent = &hsb_clk,
-- .mode = hsb_clk_mode,
-- .get_rate = hsb_clk_get_rate,
-- .users = 1,
-- .index = 3,
--};
--
--static struct resource smc0_resource[] = {
-- PBMEM(0xfff03400),
--};
--DEFINE_DEV(smc, 0);
--DEV_CLK(pclk, smc0, pbb, 13);
--DEV_CLK(mck, smc0, hsb, 0);
--
--static struct platform_device pdc_device = {
-- .name = "pdc",
-- .id = 0,
--};
--DEV_CLK(hclk, pdc, hsb, 4);
--DEV_CLK(pclk, pdc, pba, 16);
--
--static struct clk pico_clk = {
-- .name = "pico",
-- .parent = &cpu_clk,
-- .mode = cpu_clk_mode,
-- .get_rate = cpu_clk_get_rate,
-- .users = 1,
--};
--
--static struct resource dmaca0_resource[] = {
-- {
-- .start = 0xff200000,
-- .end = 0xff20ffff,
-- .flags = IORESOURCE_MEM,
-- },
-- IRQ(2),
--};
--DEFINE_DEV(dmaca, 0);
--DEV_CLK(hclk, dmaca0, hsb, 10);
--
--/* --------------------------------------------------------------------
-- * HMATRIX
-- * -------------------------------------------------------------------- */
--
--static struct clk hmatrix_clk = {
-- .name = "hmatrix_clk",
-- .parent = &pbb_clk,
-- .mode = pbb_clk_mode,
-- .get_rate = pbb_clk_get_rate,
-- .index = 2,
-- .users = 1,
--};
--#define HMATRIX_BASE ((void __iomem *)0xfff00800)
--
--#define hmatrix_readl(reg) \
-- __raw_readl((HMATRIX_BASE) + HMATRIX_##reg)
--#define hmatrix_writel(reg,value) \
-- __raw_writel((value), (HMATRIX_BASE) + HMATRIX_##reg)
--
--/*
-- * Set bits in the HMATRIX Special Function Register (SFR) used by the
-- * External Bus Interface (EBI). This can be used to enable special
-- * features like CompactFlash support, NAND Flash support, etc. on
-- * certain chipselects.
-- */
--static inline void set_ebi_sfr_bits(u32 mask)
--{
-- u32 sfr;
--
-- clk_enable(&hmatrix_clk);
-- sfr = hmatrix_readl(SFR4);
-- sfr |= mask;
-- hmatrix_writel(SFR4, sfr);
-- clk_disable(&hmatrix_clk);
--}
--
--/* --------------------------------------------------------------------
+ div = PM_BFEXT(PLLDIV, control) + 1;
+ mul = PM_BFEXT(PLLMUL, control) + 1;
+
+@@ -120,6 +116,71 @@
+ return rate;
+ }
+
++static long pll_set_rate(struct clk *clk, unsigned long rate,
++ u32 *pll_ctrl)
++{
++ unsigned long mul;
++ unsigned long mul_best_fit = 0;
++ unsigned long div;
++ unsigned long div_min;
++ unsigned long div_max;
++ unsigned long div_best_fit = 0;
++ unsigned long base;
++ unsigned long pll_in;
++ unsigned long actual = 0;
++ unsigned long rate_error;
++ unsigned long rate_error_prev = ~0UL;
++ u32 ctrl;
++
++ /* Rate must be between 80 MHz and 200 Mhz. */
++ if (rate < 80000000UL || rate > 200000000UL)
++ return -EINVAL;
++
++ ctrl = PM_BF(PLLOPT, 4);
++ base = clk->parent->get_rate(clk->parent);
++
++ /* PLL input frequency must be between 6 MHz and 32 MHz. */
++ div_min = DIV_ROUND_UP(base, 32000000UL);
++ div_max = base / 6000000UL;
++
++ if (div_max < div_min)
++ return -EINVAL;
++
++ for (div = div_min; div <= div_max; div++) {
++ pll_in = (base + div / 2) / div;
++ mul = (rate + pll_in / 2) / pll_in;
++
++ if (mul == 0)
++ continue;
++
++ actual = pll_in * mul;
++ rate_error = abs(actual - rate);
++
++ if (rate_error < rate_error_prev) {
++ mul_best_fit = mul;
++ div_best_fit = div;
++ rate_error_prev = rate_error;
++ }
++
++ if (rate_error == 0)
++ break;
++ }
++
++ if (div_best_fit == 0)
++ return -EINVAL;
++
++ ctrl |= PM_BF(PLLMUL, mul_best_fit - 1);
++ ctrl |= PM_BF(PLLDIV, div_best_fit - 1);
++ ctrl |= PM_BF(PLLCOUNT, 16);
++
++ if (clk->parent == &osc1)
++ ctrl |= PM_BIT(PLLOSC);
++
++ *pll_ctrl = ctrl;
++
++ return actual;
++}
++
+ static unsigned long pll0_get_rate(struct clk *clk)
+ {
+ u32 control;
+@@ -129,6 +190,41 @@
+ return pll_get_rate(clk, control);
+ }
+
++static void pll1_mode(struct clk *clk, int enabled)
++{
++ unsigned long timeout;
++ u32 status;
++ u32 ctrl;
++
++ ctrl = pm_readl(PLL1);
++
++ if (enabled) {
++ if (!PM_BFEXT(PLLMUL, ctrl) && !PM_BFEXT(PLLDIV, ctrl)) {
++ pr_debug("clk %s: failed to enable, rate not set\n",
++ clk->name);
++ return;
++ }
++
++ ctrl |= PM_BIT(PLLEN);
++ pm_writel(PLL1, ctrl);
++
++ /* Wait for PLL lock. */
++ for (timeout = 10000; timeout; timeout--) {
++ status = pm_readl(ISR);
++ if (status & PM_BIT(LOCK1))
++ break;
++ udelay(10);
++ }
++
++ if (!(status & PM_BIT(LOCK1)))
++ printk(KERN_ERR "clk %s: timeout waiting for lock\n",
++ clk->name);
++ } else {
++ ctrl &= ~PM_BIT(PLLEN);
++ pm_writel(PLL1, ctrl);
++ }
++}
++
+ static unsigned long pll1_get_rate(struct clk *clk)
+ {
+ u32 control;
+@@ -138,6 +234,49 @@
+ return pll_get_rate(clk, control);
+ }
+
++static long pll1_set_rate(struct clk *clk, unsigned long rate, int apply)
++{
++ u32 ctrl = 0;
++ unsigned long actual_rate;
++
++ actual_rate = pll_set_rate(clk, rate, &ctrl);
++
++ if (apply) {
++ if (actual_rate != rate)
++ return -EINVAL;
++ if (clk->users > 0)
++ return -EBUSY;
++ pr_debug(KERN_INFO "clk %s: new rate %lu (actual rate %lu)\n",
++ clk->name, rate, actual_rate);
++ pm_writel(PLL1, ctrl);
++ }
++
++ return actual_rate;
++}
++
++static int pll1_set_parent(struct clk *clk, struct clk *parent)
++{
++ u32 ctrl;
++
++ if (clk->users > 0)
++ return -EBUSY;
++
++ ctrl = pm_readl(PLL1);
++ WARN_ON(ctrl & PM_BIT(PLLEN));
++
++ if (parent == &osc0)
++ ctrl &= ~PM_BIT(PLLOSC);
++ else if (parent == &osc1)
++ ctrl |= PM_BIT(PLLOSC);
++ else
++ return -EINVAL;
++
++ pm_writel(PLL1, ctrl);
++ clk->parent = parent;
++
++ return 0;
++}
++
+ /*
+ * The AT32AP7000 has five primary clock sources: One 32kHz
+ * oscillator, two crystal oscillators and two PLLs.
+@@ -166,7 +305,10 @@
+ };
+ static struct clk pll1 = {
+ .name = "pll1",
++ .mode = pll1_mode,
+ .get_rate = pll1_get_rate,
++ .set_rate = pll1_set_rate,
++ .set_parent = pll1_set_parent,
+ .parent = &osc0,
+ };
+
+@@ -534,6 +676,14 @@
+ .users = 1,
+ .index = 3,
+ };
++static struct clk sdramc_clk = {
++ .name = "sdramc_clk",
++ .parent = &pbb_clk,
++ .mode = pbb_clk_mode,
++ .get_rate = pbb_clk_get_rate,
++ .users = 1,
++ .index = 14,
++};
+
+ static struct resource smc0_resource[] = {
+ PBMEM(0xfff03400),
+@@ -605,19 +755,32 @@
+ }
+
+ /* --------------------------------------------------------------------
- * System Timer/Counter (TC)
-- * -------------------------------------------------------------------- */
++ * Timer/Counter (TC)
+ * -------------------------------------------------------------------- */
-static struct resource at32_systc0_resource[] = {
-- PBMEM(0xfff00c00),
-- IRQ(22),
--};
++
++static struct resource at32_tcb0_resource[] = {
+ PBMEM(0xfff00c00),
+ IRQ(22),
+ };
-struct platform_device at32_systc0_device = {
- .name = "systc",
-- .id = 0,
++static struct platform_device at32_tcb0_device = {
++ .name = "atmel_tcb",
+ .id = 0,
- .resource = at32_systc0_resource,
- .num_resources = ARRAY_SIZE(at32_systc0_resource),
--};
++ .resource = at32_tcb0_resource,
++ .num_resources = ARRAY_SIZE(at32_tcb0_resource),
+ };
-DEV_CLK(pclk, at32_systc0, pbb, 3);
--
--/* --------------------------------------------------------------------
-- * PIO
-- * -------------------------------------------------------------------- */
--
--static struct resource pio0_resource[] = {
-- PBMEM(0xffe02800),
-- IRQ(13),
--};
--DEFINE_DEV(pio, 0);
--DEV_CLK(mck, pio0, pba, 10);
--
--static struct resource pio1_resource[] = {
-- PBMEM(0xffe02c00),
-- IRQ(14),
--};
--DEFINE_DEV(pio, 1);
--DEV_CLK(mck, pio1, pba, 11);
--
--static struct resource pio2_resource[] = {
-- PBMEM(0xffe03000),
-- IRQ(15),
--};
--DEFINE_DEV(pio, 2);
--DEV_CLK(mck, pio2, pba, 12);
--
--static struct resource pio3_resource[] = {
-- PBMEM(0xffe03400),
-- IRQ(16),
--};
--DEFINE_DEV(pio, 3);
--DEV_CLK(mck, pio3, pba, 13);
--
--static struct resource pio4_resource[] = {
-- PBMEM(0xffe03800),
-- IRQ(17),
--};
--DEFINE_DEV(pio, 4);
--DEV_CLK(mck, pio4, pba, 14);
--
--void __init at32_add_system_devices(void)
--{
-- platform_device_register(&at32_pm0_device);
-- platform_device_register(&at32_intc0_device);
-- platform_device_register(&at32ap700x_rtc0_device);
-- platform_device_register(&at32_wdt0_device);
-- platform_device_register(&at32_eic0_device);
-- platform_device_register(&smc0_device);
-- platform_device_register(&pdc_device);
-- platform_device_register(&dmaca0_device);
--
++DEV_CLK(t0_clk, at32_tcb0, pbb, 3);
++
++static struct resource at32_tcb1_resource[] = {
++ PBMEM(0xfff01000),
++ IRQ(23),
++};
++static struct platform_device at32_tcb1_device = {
++ .name = "atmel_tcb",
++ .id = 1,
++ .resource = at32_tcb1_resource,
++ .num_resources = ARRAY_SIZE(at32_tcb1_resource),
++};
++DEV_CLK(t0_clk, at32_tcb1, pbb, 4);
+
+ /* --------------------------------------------------------------------
+ * PIO
+@@ -669,7 +832,8 @@
+ platform_device_register(&pdc_device);
+ platform_device_register(&dmaca0_device);
+
- platform_device_register(&at32_systc0_device);
--
-- platform_device_register(&pio0_device);
-- platform_device_register(&pio1_device);
-- platform_device_register(&pio2_device);
-- platform_device_register(&pio3_device);
-- platform_device_register(&pio4_device);
--}
--
--/* --------------------------------------------------------------------
-- * USART
-- * -------------------------------------------------------------------- */
--
--static struct atmel_uart_data atmel_usart0_data = {
-- .use_dma_tx = 1,
-- .use_dma_rx = 1,
--};
--static struct resource atmel_usart0_resource[] = {
-- PBMEM(0xffe00c00),
-- IRQ(6),
--};
--DEFINE_DEV_DATA(atmel_usart, 0);
--DEV_CLK(usart, atmel_usart0, pba, 3);
--
--static struct atmel_uart_data atmel_usart1_data = {
-- .use_dma_tx = 1,
-- .use_dma_rx = 1,
--};
--static struct resource atmel_usart1_resource[] = {
-- PBMEM(0xffe01000),
-- IRQ(7),
--};
--DEFINE_DEV_DATA(atmel_usart, 1);
--DEV_CLK(usart, atmel_usart1, pba, 4);
--
--static struct atmel_uart_data atmel_usart2_data = {
-- .use_dma_tx = 1,
-- .use_dma_rx = 1,
--};
--static struct resource atmel_usart2_resource[] = {
-- PBMEM(0xffe01400),
-- IRQ(8),
--};
--DEFINE_DEV_DATA(atmel_usart, 2);
--DEV_CLK(usart, atmel_usart2, pba, 5);
--
--static struct atmel_uart_data atmel_usart3_data = {
-- .use_dma_tx = 1,
-- .use_dma_rx = 1,
--};
--static struct resource atmel_usart3_resource[] = {
-- PBMEM(0xffe01800),
-- IRQ(9),
--};
--DEFINE_DEV_DATA(atmel_usart, 3);
--DEV_CLK(usart, atmel_usart3, pba, 6);
--
--static inline void configure_usart0_pins(void)
--{
-- select_peripheral(PA(8), PERIPH_B, 0); /* RXD */
-- select_peripheral(PA(9), PERIPH_B, 0); /* TXD */
--}
--
--static inline void configure_usart1_pins(void)
--{
-- select_peripheral(PA(17), PERIPH_A, 0); /* RXD */
-- select_peripheral(PA(18), PERIPH_A, 0); /* TXD */
--}
--
--static inline void configure_usart2_pins(void)
--{
-- select_peripheral(PB(26), PERIPH_B, 0); /* RXD */
-- select_peripheral(PB(27), PERIPH_B, 0); /* TXD */
--}
--
--static inline void configure_usart3_pins(void)
--{
-- select_peripheral(PB(18), PERIPH_B, 0); /* RXD */
-- select_peripheral(PB(17), PERIPH_B, 0); /* TXD */
--}
--
--static struct platform_device *__initdata at32_usarts[4];
--
--void __init at32_map_usart(unsigned int hw_id, unsigned int line)
--{
-- struct platform_device *pdev;
--
-- switch (hw_id) {
-- case 0:
-- pdev = &atmel_usart0_device;
-- configure_usart0_pins();
-- break;
-- case 1:
-- pdev = &atmel_usart1_device;
-- configure_usart1_pins();
-- break;
-- case 2:
-- pdev = &atmel_usart2_device;
-- configure_usart2_pins();
-- break;
-- case 3:
-- pdev = &atmel_usart3_device;
-- configure_usart3_pins();
-- break;
-- default:
-- return;
-- }
--
-- if (PXSEG(pdev->resource[0].start) == P4SEG) {
-- /* Addresses in the P4 segment are permanently mapped 1:1 */
-- struct atmel_uart_data *data = pdev->dev.platform_data;
-- data->regs = (void __iomem *)pdev->resource[0].start;
-- }
--
-- pdev->id = line;
-- at32_usarts[line] = pdev;
--}
--
--struct platform_device *__init at32_add_device_usart(unsigned int id)
--{
-- platform_device_register(at32_usarts[id]);
-- return at32_usarts[id];
--}
--
--struct platform_device *atmel_default_console_device;
--
--void __init at32_setup_serial_console(unsigned int usart_id)
--{
-- atmel_default_console_device = at32_usarts[usart_id];
--}
--
--/* --------------------------------------------------------------------
-- * Ethernet
-- * -------------------------------------------------------------------- */
--
--static struct eth_platform_data macb0_data;
--static struct resource macb0_resource[] = {
-- PBMEM(0xfff01800),
-- IRQ(25),
--};
--DEFINE_DEV_DATA(macb, 0);
--DEV_CLK(hclk, macb0, hsb, 8);
--DEV_CLK(pclk, macb0, pbb, 6);
--
--static struct eth_platform_data macb1_data;
--static struct resource macb1_resource[] = {
-- PBMEM(0xfff01c00),
-- IRQ(26),
--};
--DEFINE_DEV_DATA(macb, 1);
--DEV_CLK(hclk, macb1, hsb, 9);
--DEV_CLK(pclk, macb1, pbb, 7);
--
--struct platform_device *__init
--at32_add_device_eth(unsigned int id, struct eth_platform_data *data)
--{
-- struct platform_device *pdev;
--
-- switch (id) {
-- case 0:
-- pdev = &macb0_device;
--
-- select_peripheral(PC(3), PERIPH_A, 0); /* TXD0 */
-- select_peripheral(PC(4), PERIPH_A, 0); /* TXD1 */
-- select_peripheral(PC(7), PERIPH_A, 0); /* TXEN */
-- select_peripheral(PC(8), PERIPH_A, 0); /* TXCK */
-- select_peripheral(PC(9), PERIPH_A, 0); /* RXD0 */
-- select_peripheral(PC(10), PERIPH_A, 0); /* RXD1 */
-- select_peripheral(PC(13), PERIPH_A, 0); /* RXER */
-- select_peripheral(PC(15), PERIPH_A, 0); /* RXDV */
-- select_peripheral(PC(16), PERIPH_A, 0); /* MDC */
-- select_peripheral(PC(17), PERIPH_A, 0); /* MDIO */
--
-- if (!data->is_rmii) {
-- select_peripheral(PC(0), PERIPH_A, 0); /* COL */
-- select_peripheral(PC(1), PERIPH_A, 0); /* CRS */
-- select_peripheral(PC(2), PERIPH_A, 0); /* TXER */
-- select_peripheral(PC(5), PERIPH_A, 0); /* TXD2 */
-- select_peripheral(PC(6), PERIPH_A, 0); /* TXD3 */
-- select_peripheral(PC(11), PERIPH_A, 0); /* RXD2 */
-- select_peripheral(PC(12), PERIPH_A, 0); /* RXD3 */
-- select_peripheral(PC(14), PERIPH_A, 0); /* RXCK */
-- select_peripheral(PC(18), PERIPH_A, 0); /* SPD */
-- }
-- break;
--
-- case 1:
-- pdev = &macb1_device;
--
-- select_peripheral(PD(13), PERIPH_B, 0); /* TXD0 */
-- select_peripheral(PD(14), PERIPH_B, 0); /* TXD1 */
-- select_peripheral(PD(11), PERIPH_B, 0); /* TXEN */
-- select_peripheral(PD(12), PERIPH_B, 0); /* TXCK */
-- select_peripheral(PD(10), PERIPH_B, 0); /* RXD0 */
-- select_peripheral(PD(6), PERIPH_B, 0); /* RXD1 */
-- select_peripheral(PD(5), PERIPH_B, 0); /* RXER */
-- select_peripheral(PD(4), PERIPH_B, 0); /* RXDV */
-- select_peripheral(PD(3), PERIPH_B, 0); /* MDC */
-- select_peripheral(PD(2), PERIPH_B, 0); /* MDIO */
--
-- if (!data->is_rmii) {
-- select_peripheral(PC(19), PERIPH_B, 0); /* COL */
-- select_peripheral(PC(23), PERIPH_B, 0); /* CRS */
-- select_peripheral(PC(26), PERIPH_B, 0); /* TXER */
-- select_peripheral(PC(27), PERIPH_B, 0); /* TXD2 */
-- select_peripheral(PC(28), PERIPH_B, 0); /* TXD3 */
-- select_peripheral(PC(29), PERIPH_B, 0); /* RXD2 */
-- select_peripheral(PC(30), PERIPH_B, 0); /* RXD3 */
-- select_peripheral(PC(24), PERIPH_B, 0); /* RXCK */
-- select_peripheral(PD(15), PERIPH_B, 0); /* SPD */
-- }
-- break;
--
-- default:
-- return NULL;
-- }
--
-- memcpy(pdev->dev.platform_data, data, sizeof(struct eth_platform_data));
-- platform_device_register(pdev);
--
-- return pdev;
--}
--
--/* --------------------------------------------------------------------
-- * SPI
-- * -------------------------------------------------------------------- */
--static struct resource atmel_spi0_resource[] = {
-- PBMEM(0xffe00000),
-- IRQ(3),
--};
--DEFINE_DEV(atmel_spi, 0);
--DEV_CLK(spi_clk, atmel_spi0, pba, 0);
--
--static struct resource atmel_spi1_resource[] = {
-- PBMEM(0xffe00400),
-- IRQ(4),
--};
--DEFINE_DEV(atmel_spi, 1);
--DEV_CLK(spi_clk, atmel_spi1, pba, 1);
--
--static void __init
--at32_spi_setup_slaves(unsigned int bus_num, struct spi_board_info *b,
-- unsigned int n, const u8 *pins)
--{
-- unsigned int pin, mode;
--
-- for (; n; n--, b++) {
-- b->bus_num = bus_num;
-- if (b->chip_select >= 4)
-- continue;
-- pin = (unsigned)b->controller_data;
-- if (!pin) {
-- pin = pins[b->chip_select];
-- b->controller_data = (void *)pin;
-- }
-- mode = AT32_GPIOF_OUTPUT;
-- if (!(b->mode & SPI_CS_HIGH))
-- mode |= AT32_GPIOF_HIGH;
-- at32_select_gpio(pin, mode);
-- }
--}
--
--struct platform_device *__init
--at32_add_device_spi(unsigned int id, struct spi_board_info *b, unsigned int n)
--{
-- /*
-- * Manage the chipselects as GPIOs, normally using the same pins
-- * the SPI controller expects; but boards can use other pins.
-- */
-- static u8 __initdata spi0_pins[] =
-- { GPIO_PIN_PA(3), GPIO_PIN_PA(4),
-- GPIO_PIN_PA(5), GPIO_PIN_PA(20), };
-- static u8 __initdata spi1_pins[] =
-- { GPIO_PIN_PB(2), GPIO_PIN_PB(3),
-- GPIO_PIN_PB(4), GPIO_PIN_PA(27), };
-- struct platform_device *pdev;
--
-- switch (id) {
-- case 0:
-- pdev = &atmel_spi0_device;
-- select_peripheral(PA(0), PERIPH_A, 0); /* MISO */
-- select_peripheral(PA(1), PERIPH_A, 0); /* MOSI */
-- select_peripheral(PA(2), PERIPH_A, 0); /* SCK */
-- at32_spi_setup_slaves(0, b, n, spi0_pins);
-- break;
--
-- case 1:
-- pdev = &atmel_spi1_device;
-- select_peripheral(PB(0), PERIPH_B, 0); /* MISO */
-- select_peripheral(PB(1), PERIPH_B, 0); /* MOSI */
-- select_peripheral(PB(5), PERIPH_B, 0); /* SCK */
-- at32_spi_setup_slaves(1, b, n, spi1_pins);
-- break;
--
-- default:
-- return NULL;
-- }
--
-- spi_register_board_info(b, n);
-- platform_device_register(pdev);
-- return pdev;
--}
--
--/* --------------------------------------------------------------------
-- * TWI
-- * -------------------------------------------------------------------- */
--static struct resource atmel_twi0_resource[] __initdata = {
-- PBMEM(0xffe00800),
-- IRQ(5),
--};
--static struct clk atmel_twi0_pclk = {
-- .name = "twi_pclk",
-- .parent = &pba_clk,
-- .mode = pba_clk_mode,
-- .get_rate = pba_clk_get_rate,
-- .index = 2,
--};
--
++ platform_device_register(&at32_tcb0_device);
++ platform_device_register(&at32_tcb1_device);
+
+ platform_device_register(&pio0_device);
+ platform_device_register(&pio1_device);
+@@ -679,6 +843,81 @@
+ }
+
+ /* --------------------------------------------------------------------
++ * PSIF
++ * -------------------------------------------------------------------- */
++static struct resource atmel_psif0_resource[] __initdata = {
++ {
++ .start = 0xffe03c00,
++ .end = 0xffe03cff,
++ .flags = IORESOURCE_MEM,
++ },
++ IRQ(18),
++};
++static struct clk atmel_psif0_pclk = {
++ .name = "pclk",
++ .parent = &pba_clk,
++ .mode = pba_clk_mode,
++ .get_rate = pba_clk_get_rate,
++ .index = 15,
++};
++
++static struct resource atmel_psif1_resource[] __initdata = {
++ {
++ .start = 0xffe03d00,
++ .end = 0xffe03dff,
++ .flags = IORESOURCE_MEM,
++ },
++ IRQ(18),
++};
++static struct clk atmel_psif1_pclk = {
++ .name = "pclk",
++ .parent = &pba_clk,
++ .mode = pba_clk_mode,
++ .get_rate = pba_clk_get_rate,
++ .index = 15,
++};
++
++struct platform_device *__init at32_add_device_psif(unsigned int id)
++{
++ struct platform_device *pdev;
++
++ if (!(id == 0 || id == 1))
++ return NULL;
++
++ pdev = platform_device_alloc("atmel_psif", id);
++ if (!pdev)
++ return NULL;
++
++ switch (id) {
++ case 0:
++ if (platform_device_add_resources(pdev, atmel_psif0_resource,
++ ARRAY_SIZE(atmel_psif0_resource)))
++ goto err_add_resources;
++ atmel_psif0_pclk.dev = &pdev->dev;
++ select_peripheral(PA(8), PERIPH_A, 0); /* CLOCK */
++ select_peripheral(PA(9), PERIPH_A, 0); /* DATA */
++ break;
++ case 1:
++ if (platform_device_add_resources(pdev, atmel_psif1_resource,
++ ARRAY_SIZE(atmel_psif1_resource)))
++ goto err_add_resources;
++ atmel_psif1_pclk.dev = &pdev->dev;
++ select_peripheral(PB(11), PERIPH_A, 0); /* CLOCK */
++ select_peripheral(PB(12), PERIPH_A, 0); /* DATA */
++ break;
++ default:
++ return NULL;
++ }
++
++ platform_device_add(pdev);
++ return pdev;
++
++err_add_resources:
++ platform_device_put(pdev);
++ return NULL;
++}
++
++/* --------------------------------------------------------------------
+ * USART
+ * -------------------------------------------------------------------- */
+
+@@ -989,7 +1228,9 @@
+ .index = 2,
+ };
+
-struct platform_device *__init at32_add_device_twi(unsigned int id)
--{
-- struct platform_device *pdev;
--
-- if (id != 0)
-- return NULL;
--
-- pdev = platform_device_alloc("atmel_twi", id);
-- if (!pdev)
-- return NULL;
--
-- if (platform_device_add_resources(pdev, atmel_twi0_resource,
-- ARRAY_SIZE(atmel_twi0_resource)))
-- goto err_add_resources;
--
-- select_peripheral(PA(6), PERIPH_A, 0); /* SDA */
-- select_peripheral(PA(7), PERIPH_A, 0); /* SDL */
--
-- atmel_twi0_pclk.dev = &pdev->dev;
--
-- platform_device_add(pdev);
-- return pdev;
--
--err_add_resources:
-- platform_device_put(pdev);
-- return NULL;
--}
--
--/* --------------------------------------------------------------------
-- * MMC
-- * -------------------------------------------------------------------- */
--static struct resource atmel_mci0_resource[] __initdata = {
-- PBMEM(0xfff02400),
-- IRQ(28),
--};
--static struct clk atmel_mci0_pclk = {
-- .name = "mci_clk",
-- .parent = &pbb_clk,
-- .mode = pbb_clk_mode,
-- .get_rate = pbb_clk_get_rate,
-- .index = 9,
--};
--
++struct platform_device *__init at32_add_device_twi(unsigned int id,
++ struct i2c_board_info *b,
++ unsigned int n)
+ {
+ struct platform_device *pdev;
+
+@@ -1009,6 +1250,9 @@
+
+ atmel_twi0_pclk.dev = &pdev->dev;
+
++ if (b)
++ i2c_register_board_info(id, b, n);
++
+ platform_device_add(pdev);
+ return pdev;
+
+@@ -1032,7 +1276,8 @@
+ .index = 9,
+ };
+
-struct platform_device *__init at32_add_device_mci(unsigned int id)
--{
-- struct platform_device *pdev;
--
-- if (id != 0)
-- return NULL;
--
-- pdev = platform_device_alloc("atmel_mci", id);
-- if (!pdev)
++struct platform_device *__init
++at32_add_device_mci(unsigned int id, struct mci_platform_data *data)
+ {
+ struct platform_device *pdev;
+
+@@ -1041,11 +1286,15 @@
+
+ pdev = platform_device_alloc("atmel_mci", id);
+ if (!pdev)
- return NULL;
--
-- if (platform_device_add_resources(pdev, atmel_mci0_resource,
-- ARRAY_SIZE(atmel_mci0_resource)))
++ goto fail;
+
+ if (platform_device_add_resources(pdev, atmel_mci0_resource,
+ ARRAY_SIZE(atmel_mci0_resource)))
- goto err_add_resources;
--
-- select_peripheral(PA(10), PERIPH_A, 0); /* CLK */
-- select_peripheral(PA(11), PERIPH_A, 0); /* CMD */
-- select_peripheral(PA(12), PERIPH_A, 0); /* DATA0 */
-- select_peripheral(PA(13), PERIPH_A, 0); /* DATA1 */
-- select_peripheral(PA(14), PERIPH_A, 0); /* DATA2 */
-- select_peripheral(PA(15), PERIPH_A, 0); /* DATA3 */
--
-- atmel_mci0_pclk.dev = &pdev->dev;
--
-- platform_device_add(pdev);
-- return pdev;
--
++ goto fail;
++
++ if (data && platform_device_add_data(pdev, data,
++ sizeof(struct mci_platform_data)))
++ goto fail;
+
+ select_peripheral(PA(10), PERIPH_A, 0); /* CLK */
+ select_peripheral(PA(11), PERIPH_A, 0); /* CMD */
+@@ -1054,12 +1303,19 @@
+ select_peripheral(PA(14), PERIPH_A, 0); /* DATA2 */
+ select_peripheral(PA(15), PERIPH_A, 0); /* DATA3 */
+
++ if (data) {
++ if (data->detect_pin != GPIO_PIN_NONE)
++ at32_select_gpio(data->detect_pin, 0);
++ if (data->wp_pin != GPIO_PIN_NONE)
++ at32_select_gpio(data->wp_pin, 0);
++ }
++
+ atmel_mci0_pclk.dev = &pdev->dev;
+
+ platform_device_add(pdev);
+ return pdev;
+
-err_add_resources:
-- platform_device_put(pdev);
-- return NULL;
--}
--
--/* --------------------------------------------------------------------
-- * LCDC
-- * -------------------------------------------------------------------- */
--static struct atmel_lcdfb_info atmel_lcdfb0_data;
--static struct resource atmel_lcdfb0_resource[] = {
-- {
-- .start = 0xff000000,
-- .end = 0xff000fff,
-- .flags = IORESOURCE_MEM,
-- },
-- IRQ(1),
-- {
-- /* Placeholder for pre-allocated fb memory */
-- .start = 0x00000000,
-- .end = 0x00000000,
-- .flags = 0,
-- },
--};
--DEFINE_DEV_DATA(atmel_lcdfb, 0);
--DEV_CLK(hck1, atmel_lcdfb0, hsb, 7);
--static struct clk atmel_lcdfb0_pixclk = {
-- .name = "lcdc_clk",
-- .dev = &atmel_lcdfb0_device.dev,
-- .mode = genclk_mode,
-- .get_rate = genclk_get_rate,
-- .set_rate = genclk_set_rate,
-- .set_parent = genclk_set_parent,
-- .index = 7,
--};
--
--struct platform_device *__init
--at32_add_device_lcdc(unsigned int id, struct atmel_lcdfb_info *data,
++fail:
+ platform_device_put(pdev);
+ return NULL;
+ }
+@@ -1097,7 +1353,8 @@
+
+ struct platform_device *__init
+ at32_add_device_lcdc(unsigned int id, struct atmel_lcdfb_info *data,
- unsigned long fbmem_start, unsigned long fbmem_len)
--{
-- struct platform_device *pdev;
-- struct atmel_lcdfb_info *info;
-- struct fb_monspecs *monspecs;
-- struct fb_videomode *modedb;
-- unsigned int modedb_size;
--
-- /*
-- * Do a deep copy of the fb data, monspecs and modedb. Make
-- * sure all allocations are done before setting up the
-- * portmux.
-- */
-- monspecs = kmemdup(data->default_monspecs,
-- sizeof(struct fb_monspecs), GFP_KERNEL);
-- if (!monspecs)
-- return NULL;
--
-- modedb_size = sizeof(struct fb_videomode) * monspecs->modedb_len;
-- modedb = kmemdup(monspecs->modedb, modedb_size, GFP_KERNEL);
-- if (!modedb)
-- goto err_dup_modedb;
-- monspecs->modedb = modedb;
--
-- switch (id) {
-- case 0:
-- pdev = &atmel_lcdfb0_device;
++ unsigned long fbmem_start, unsigned long fbmem_len,
++ unsigned int pin_config)
+ {
+ struct platform_device *pdev;
+ struct atmel_lcdfb_info *info;
+@@ -1124,37 +1381,77 @@
+ switch (id) {
+ case 0:
+ pdev = &atmel_lcdfb0_device;
- select_peripheral(PC(19), PERIPH_A, 0); /* CC */
- select_peripheral(PC(20), PERIPH_A, 0); /* HSYNC */
- select_peripheral(PC(21), PERIPH_A, 0); /* PCLK */
- select_peripheral(PD(15), PERIPH_A, 0); /* DATA21 */
- select_peripheral(PD(16), PERIPH_A, 0); /* DATA22 */
- select_peripheral(PD(17), PERIPH_A, 0); /* DATA23 */
--
-- clk_set_parent(&atmel_lcdfb0_pixclk, &pll0);
-- clk_set_rate(&atmel_lcdfb0_pixclk, clk_get_rate(&pll0));
-- break;
--
-- default:
-- goto err_invalid_id;
-- }
--
-- if (fbmem_len) {
-- pdev->resource[2].start = fbmem_start;
-- pdev->resource[2].end = fbmem_start + fbmem_len - 1;
-- pdev->resource[2].flags = IORESOURCE_MEM;
-- }
--
-- info = pdev->dev.platform_data;
-- memcpy(info, data, sizeof(struct atmel_lcdfb_info));
-- info->default_monspecs = monspecs;
--
-- platform_device_register(pdev);
-- return pdev;
--
--err_invalid_id:
-- kfree(modedb);
--err_dup_modedb:
-- kfree(monspecs);
-- return NULL;
--}
--
--/* --------------------------------------------------------------------
-- * SSC
-- * -------------------------------------------------------------------- */
--static struct resource ssc0_resource[] = {
-- PBMEM(0xffe01c00),
-- IRQ(10),
--};
--DEFINE_DEV(ssc, 0);
--DEV_CLK(pclk, ssc0, pba, 7);
--
--static struct resource ssc1_resource[] = {
-- PBMEM(0xffe02000),
-- IRQ(11),
--};
--DEFINE_DEV(ssc, 1);
--DEV_CLK(pclk, ssc1, pba, 8);
--
--static struct resource ssc2_resource[] = {
-- PBMEM(0xffe02400),
-- IRQ(12),
--};
--DEFINE_DEV(ssc, 2);
--DEV_CLK(pclk, ssc2, pba, 9);
--
--struct platform_device *__init
--at32_add_device_ssc(unsigned int id, unsigned int flags)
--{
-- struct platform_device *pdev;
--
-- switch (id) {
-- case 0:
-- pdev = &ssc0_device;
-- if (flags & ATMEL_SSC_RF)
-- select_peripheral(PA(21), PERIPH_A, 0); /* RF */
-- if (flags & ATMEL_SSC_RK)
-- select_peripheral(PA(22), PERIPH_A, 0); /* RK */
-- if (flags & ATMEL_SSC_TK)
-- select_peripheral(PA(23), PERIPH_A, 0); /* TK */
-- if (flags & ATMEL_SSC_TF)
-- select_peripheral(PA(24), PERIPH_A, 0); /* TF */
-- if (flags & ATMEL_SSC_TD)
-- select_peripheral(PA(25), PERIPH_A, 0); /* TD */
-- if (flags & ATMEL_SSC_RD)
-- select_peripheral(PA(26), PERIPH_A, 0); /* RD */
-- break;
-- case 1:
-- pdev = &ssc1_device;
-- if (flags & ATMEL_SSC_RF)
-- select_peripheral(PA(0), PERIPH_B, 0); /* RF */
-- if (flags & ATMEL_SSC_RK)
-- select_peripheral(PA(1), PERIPH_B, 0); /* RK */
-- if (flags & ATMEL_SSC_TK)
-- select_peripheral(PA(2), PERIPH_B, 0); /* TK */
-- if (flags & ATMEL_SSC_TF)
-- select_peripheral(PA(3), PERIPH_B, 0); /* TF */
-- if (flags & ATMEL_SSC_TD)
-- select_peripheral(PA(4), PERIPH_B, 0); /* TD */
-- if (flags & ATMEL_SSC_RD)
-- select_peripheral(PA(5), PERIPH_B, 0); /* RD */
-- break;
-- case 2:
-- pdev = &ssc2_device;
-- if (flags & ATMEL_SSC_TD)
-- select_peripheral(PB(13), PERIPH_A, 0); /* TD */
-- if (flags & ATMEL_SSC_RD)
-- select_peripheral(PB(14), PERIPH_A, 0); /* RD */
-- if (flags & ATMEL_SSC_TK)
-- select_peripheral(PB(15), PERIPH_A, 0); /* TK */
-- if (flags & ATMEL_SSC_TF)
-- select_peripheral(PB(16), PERIPH_A, 0); /* TF */
-- if (flags & ATMEL_SSC_RF)
-- select_peripheral(PB(17), PERIPH_A, 0); /* RF */
-- if (flags & ATMEL_SSC_RK)
-- select_peripheral(PB(18), PERIPH_A, 0); /* RK */
-- break;
-- default:
-- return NULL;
-- }
--
-- platform_device_register(pdev);
-- return pdev;
--}
--
--/* --------------------------------------------------------------------
-- * USB Device Controller
-- * -------------------------------------------------------------------- */
--static struct resource usba0_resource[] __initdata = {
-- {
-- .start = 0xff300000,
-- .end = 0xff3fffff,
-- .flags = IORESOURCE_MEM,
-- }, {
-- .start = 0xfff03000,
-- .end = 0xfff033ff,
-- .flags = IORESOURCE_MEM,
-- },
-- IRQ(31),
--};
--static struct clk usba0_pclk = {
-- .name = "pclk",
-- .parent = &pbb_clk,
-- .mode = pbb_clk_mode,
-- .get_rate = pbb_clk_get_rate,
-- .index = 12,
--};
--static struct clk usba0_hclk = {
-- .name = "hclk",
-- .parent = &hsb_clk,
-- .mode = hsb_clk_mode,
-- .get_rate = hsb_clk_get_rate,
-- .index = 6,
--};
--
--struct platform_device *__init
--at32_add_device_usba(unsigned int id, struct usba_platform_data *data)
--{
-- struct platform_device *pdev;
--
-- if (id != 0)
-- return NULL;
--
-- pdev = platform_device_alloc("atmel_usba_udc", 0);
-- if (!pdev)
-- return NULL;
--
-- if (platform_device_add_resources(pdev, usba0_resource,
-- ARRAY_SIZE(usba0_resource)))
-- goto out_free_pdev;
--
++
++ switch (pin_config) {
++ case 0:
++ select_peripheral(PC(19), PERIPH_A, 0); /* CC */
++ select_peripheral(PC(20), PERIPH_A, 0); /* HSYNC */
++ select_peripheral(PC(21), PERIPH_A, 0); /* PCLK */
++ select_peripheral(PC(22), PERIPH_A, 0); /* VSYNC */
++ select_peripheral(PC(23), PERIPH_A, 0); /* DVAL */
++ select_peripheral(PC(24), PERIPH_A, 0); /* MODE */
++ select_peripheral(PC(25), PERIPH_A, 0); /* PWR */
++ select_peripheral(PC(26), PERIPH_A, 0); /* DATA0 */
++ select_peripheral(PC(27), PERIPH_A, 0); /* DATA1 */
++ select_peripheral(PC(28), PERIPH_A, 0); /* DATA2 */
++ select_peripheral(PC(29), PERIPH_A, 0); /* DATA3 */
++ select_peripheral(PC(30), PERIPH_A, 0); /* DATA4 */
++ select_peripheral(PC(31), PERIPH_A, 0); /* DATA5 */
++ select_peripheral(PD(0), PERIPH_A, 0); /* DATA6 */
++ select_peripheral(PD(1), PERIPH_A, 0); /* DATA7 */
++ select_peripheral(PD(2), PERIPH_A, 0); /* DATA8 */
++ select_peripheral(PD(3), PERIPH_A, 0); /* DATA9 */
++ select_peripheral(PD(4), PERIPH_A, 0); /* DATA10 */
++ select_peripheral(PD(5), PERIPH_A, 0); /* DATA11 */
++ select_peripheral(PD(6), PERIPH_A, 0); /* DATA12 */
++ select_peripheral(PD(7), PERIPH_A, 0); /* DATA13 */
++ select_peripheral(PD(8), PERIPH_A, 0); /* DATA14 */
++ select_peripheral(PD(9), PERIPH_A, 0); /* DATA15 */
++ select_peripheral(PD(10), PERIPH_A, 0); /* DATA16 */
++ select_peripheral(PD(11), PERIPH_A, 0); /* DATA17 */
++ select_peripheral(PD(12), PERIPH_A, 0); /* DATA18 */
++ select_peripheral(PD(13), PERIPH_A, 0); /* DATA19 */
++ select_peripheral(PD(14), PERIPH_A, 0); /* DATA20 */
++ select_peripheral(PD(15), PERIPH_A, 0); /* DATA21 */
++ select_peripheral(PD(16), PERIPH_A, 0); /* DATA22 */
++ select_peripheral(PD(17), PERIPH_A, 0); /* DATA23 */
++ break;
++ case 1:
++ select_peripheral(PE(0), PERIPH_B, 0); /* CC */
++ select_peripheral(PC(20), PERIPH_A, 0); /* HSYNC */
++ select_peripheral(PC(21), PERIPH_A, 0); /* PCLK */
++ select_peripheral(PC(22), PERIPH_A, 0); /* VSYNC */
++ select_peripheral(PE(1), PERIPH_B, 0); /* DVAL */
++ select_peripheral(PE(2), PERIPH_B, 0); /* MODE */
++ select_peripheral(PC(25), PERIPH_A, 0); /* PWR */
++ select_peripheral(PE(3), PERIPH_B, 0); /* DATA0 */
++ select_peripheral(PE(4), PERIPH_B, 0); /* DATA1 */
++ select_peripheral(PE(5), PERIPH_B, 0); /* DATA2 */
++ select_peripheral(PE(6), PERIPH_B, 0); /* DATA3 */
++ select_peripheral(PE(7), PERIPH_B, 0); /* DATA4 */
++ select_peripheral(PC(31), PERIPH_A, 0); /* DATA5 */
++ select_peripheral(PD(0), PERIPH_A, 0); /* DATA6 */
++ select_peripheral(PD(1), PERIPH_A, 0); /* DATA7 */
++ select_peripheral(PE(8), PERIPH_B, 0); /* DATA8 */
++ select_peripheral(PE(9), PERIPH_B, 0); /* DATA9 */
++ select_peripheral(PE(10), PERIPH_B, 0); /* DATA10 */
++ select_peripheral(PE(11), PERIPH_B, 0); /* DATA11 */
++ select_peripheral(PE(12), PERIPH_B, 0); /* DATA12 */
++ select_peripheral(PD(7), PERIPH_A, 0); /* DATA13 */
++ select_peripheral(PD(8), PERIPH_A, 0); /* DATA14 */
++ select_peripheral(PD(9), PERIPH_A, 0); /* DATA15 */
++ select_peripheral(PE(13), PERIPH_B, 0); /* DATA16 */
++ select_peripheral(PE(14), PERIPH_B, 0); /* DATA17 */
++ select_peripheral(PE(15), PERIPH_B, 0); /* DATA18 */
++ select_peripheral(PE(16), PERIPH_B, 0); /* DATA19 */
++ select_peripheral(PE(17), PERIPH_B, 0); /* DATA20 */
++ select_peripheral(PE(18), PERIPH_B, 0); /* DATA21 */
++ select_peripheral(PD(16), PERIPH_A, 0); /* DATA22 */
++ select_peripheral(PD(17), PERIPH_A, 0); /* DATA23 */
++ break;
++ default:
++ goto err_invalid_id;
++ }
+
+ clk_set_parent(&atmel_lcdfb0_pixclk, &pll0);
+ clk_set_rate(&atmel_lcdfb0_pixclk, clk_get_rate(&pll0));
+@@ -1351,9 +1648,39 @@
+ .index = 6,
+ };
+
++#define EP(nam, idx, maxpkt, maxbk, dma, isoc) \
++ [idx] = { \
++ .name = nam, \
++ .index = idx, \
++ .fifo_size = maxpkt, \
++ .nr_banks = maxbk, \
++ .can_dma = dma, \
++ .can_isoc = isoc, \
++ }
++
++static struct usba_ep_data at32_usba_ep[] __initdata = {
++ EP("ep0", 0, 64, 1, 0, 0),
++ EP("ep1", 1, 512, 2, 1, 1),
++ EP("ep2", 2, 512, 2, 1, 1),
++ EP("ep3-int", 3, 64, 3, 1, 0),
++ EP("ep4-int", 4, 64, 3, 1, 0),
++ EP("ep5", 5, 1024, 3, 1, 1),
++ EP("ep6", 6, 1024, 3, 1, 1),
++};
++
++#undef EP
++
+ struct platform_device *__init
+ at32_add_device_usba(unsigned int id, struct usba_platform_data *data)
+ {
++ /*
++ * pdata doesn't have room for any endpoints, so we need to
++ * append room for the ones we need right after it.
++ */
++ struct {
++ struct usba_platform_data pdata;
++ struct usba_ep_data ep[7];
++ } usba_data;
+ struct platform_device *pdev;
+
+ if (id != 0)
+@@ -1367,13 +1694,20 @@
+ ARRAY_SIZE(usba0_resource)))
+ goto out_free_pdev;
+
- if (data) {
- if (platform_device_add_data(pdev, data, sizeof(*data)))
- goto out_free_pdev;
--
++ if (data)
++ usba_data.pdata.vbus_pin = data->vbus_pin;
++ else
++ usba_data.pdata.vbus_pin = -EINVAL;
+
- if (data->vbus_pin != GPIO_PIN_NONE)
- at32_select_gpio(data->vbus_pin, 0);
- }
--
-- usba0_pclk.dev = &pdev->dev;
-- usba0_hclk.dev = &pdev->dev;
--
-- platform_device_add(pdev);
--
-- return pdev;
--
--out_free_pdev:
-- platform_device_put(pdev);
-- return NULL;
--}
--
--/* --------------------------------------------------------------------
-- * IDE / CompactFlash
-- * -------------------------------------------------------------------- */
--static struct resource at32_smc_cs4_resource[] __initdata = {
-- {
-- .start = 0x04000000,
-- .end = 0x07ffffff,
-- .flags = IORESOURCE_MEM,
-- },
-- IRQ(~0UL), /* Magic IRQ will be overridden */
--};
--static struct resource at32_smc_cs5_resource[] __initdata = {
-- {
-- .start = 0x20000000,
-- .end = 0x23ffffff,
-- .flags = IORESOURCE_MEM,
-- },
-- IRQ(~0UL), /* Magic IRQ will be overridden */
--};
--
--static int __init at32_init_ide_or_cf(struct platform_device *pdev,
-- unsigned int cs, unsigned int extint)
--{
-- static unsigned int extint_pin_map[4] __initdata = {
-- GPIO_PIN_PB(25),
-- GPIO_PIN_PB(26),
-- GPIO_PIN_PB(27),
-- GPIO_PIN_PB(28),
-- };
-- static bool common_pins_initialized __initdata = false;
-- unsigned int extint_pin;
-- int ret;
--
-- if (extint >= ARRAY_SIZE(extint_pin_map))
-- return -EINVAL;
-- extint_pin = extint_pin_map[extint];
--
-- switch (cs) {
-- case 4:
-- ret = platform_device_add_resources(pdev,
-- at32_smc_cs4_resource,
-- ARRAY_SIZE(at32_smc_cs4_resource));
-- if (ret)
-- return ret;
--
-- select_peripheral(PE(21), PERIPH_A, 0); /* NCS4 -> OE_N */
-- set_ebi_sfr_bits(HMATRIX_BIT(CS4A));
-- break;
-- case 5:
-- ret = platform_device_add_resources(pdev,
-- at32_smc_cs5_resource,
-- ARRAY_SIZE(at32_smc_cs5_resource));
-- if (ret)
-- return ret;
--
-- select_peripheral(PE(22), PERIPH_A, 0); /* NCS5 -> OE_N */
-- set_ebi_sfr_bits(HMATRIX_BIT(CS5A));
-- break;
-- default:
-- return -EINVAL;
-- }
--
-- if (!common_pins_initialized) {
-- select_peripheral(PE(19), PERIPH_A, 0); /* CFCE1 -> CS0_N */
-- select_peripheral(PE(20), PERIPH_A, 0); /* CFCE2 -> CS1_N */
-- select_peripheral(PE(23), PERIPH_A, 0); /* CFRNW -> DIR */
-- select_peripheral(PE(24), PERIPH_A, 0); /* NWAIT <- IORDY */
-- common_pins_initialized = true;
-- }
--
-- at32_select_periph(extint_pin, GPIO_PERIPH_A, AT32_GPIOF_DEGLITCH);
--
-- pdev->resource[1].start = EIM_IRQ_BASE + extint;
-- pdev->resource[1].end = pdev->resource[1].start;
--
-- return 0;
--}
--
--struct platform_device *__init
--at32_add_device_ide(unsigned int id, unsigned int extint,
-- struct ide_platform_data *data)
++ data = &usba_data.pdata;
++ data->num_ep = ARRAY_SIZE(at32_usba_ep);
++ memcpy(data->ep, at32_usba_ep, sizeof(at32_usba_ep));
++
++ if (platform_device_add_data(pdev, data, sizeof(usba_data)))
++ goto out_free_pdev;
++
++ if (data->vbus_pin >= 0)
++ at32_select_gpio(data->vbus_pin, 0);
+
+ usba0_pclk.dev = &pdev->dev;
+ usba0_hclk.dev = &pdev->dev;
+@@ -1526,6 +1860,58 @@
+ #endif
+
+ /* --------------------------------------------------------------------
++ * NAND Flash / SmartMedia
++ * -------------------------------------------------------------------- */
++static struct resource smc_cs3_resource[] __initdata = {
++ {
++ .start = 0x0c000000,
++ .end = 0x0fffffff,
++ .flags = IORESOURCE_MEM,
++ }, {
++ .start = 0xfff03c00,
++ .end = 0xfff03fff,
++ .flags = IORESOURCE_MEM,
++ },
++};
++
++struct platform_device *__init
++at32_add_device_nand(unsigned int id, struct atmel_nand_data *data)
++{
++ struct platform_device *pdev;
++
++ if (id != 0 || !data)
++ return NULL;
++
++ pdev = platform_device_alloc("atmel_nand", id);
++ if (!pdev)
++ goto fail;
++
++ if (platform_device_add_resources(pdev, smc_cs3_resource,
++ ARRAY_SIZE(smc_cs3_resource)))
++ goto fail;
++
++ if (platform_device_add_data(pdev, data,
++ sizeof(struct atmel_nand_data)))
++ goto fail;
++
++ set_ebi_sfr_bits(HMATRIX_BIT(CS3A));
++ if (data->enable_pin)
++ at32_select_gpio(data->enable_pin,
++ AT32_GPIOF_OUTPUT | AT32_GPIOF_HIGH);
++ if (data->rdy_pin)
++ at32_select_gpio(data->rdy_pin, 0);
++ if (data->det_pin)
++ at32_select_gpio(data->det_pin, 0);
++
++ platform_device_add(pdev);
++ return pdev;
++
++fail:
++ platform_device_put(pdev);
++ return NULL;
++}
++
++/* --------------------------------------------------------------------
+ * AC97C
+ * -------------------------------------------------------------------- */
+ static struct resource atmel_ac97c0_resource[] __initdata = {
+@@ -1683,6 +2069,7 @@
+ &hmatrix_clk,
+ &ebi_clk,
+ &hramc_clk,
++ &sdramc_clk,
+ &smc0_pclk,
+ &smc0_mck,
+ &pdc_hclk,
+@@ -1694,7 +2081,10 @@
+ &pio2_mck,
+ &pio3_mck,
+ &pio4_mck,
+- &at32_systc0_pclk,
++ &at32_tcb0_t0_clk,
++ &at32_tcb1_t0_clk,
++ &atmel_psif0_pclk,
++ &atmel_psif1_pclk,
+ &atmel_usart0_usart,
+ &atmel_usart1_usart,
+ &atmel_usart2_usart,
+@@ -1730,16 +2120,7 @@
+ };
+ unsigned int at32_nr_clocks = ARRAY_SIZE(at32_clock_list);
+
+-void __init at32_portmux_init(void)
-{
-- struct platform_device *pdev;
--
-- pdev = platform_device_alloc("at32_ide", id);
-- if (!pdev)
-- goto fail;
--
-- if (platform_device_add_data(pdev, data,
-- sizeof(struct ide_platform_data)))
-- goto fail;
--
-- if (at32_init_ide_or_cf(pdev, data->cs, extint))
-- goto fail;
--
-- platform_device_add(pdev);
-- return pdev;
--
--fail:
-- platform_device_put(pdev);
-- return NULL;
+- at32_init_pio(&pio0_device);
+- at32_init_pio(&pio1_device);
+- at32_init_pio(&pio2_device);
+- at32_init_pio(&pio3_device);
+- at32_init_pio(&pio4_device);
-}
-
--struct platform_device *__init
--at32_add_device_cf(unsigned int id, unsigned int extint,
-- struct cf_platform_data *data)
--{
-- struct platform_device *pdev;
--
-- pdev = platform_device_alloc("at32_cf", id);
-- if (!pdev)
-- goto fail;
--
-- if (platform_device_add_data(pdev, data,
-- sizeof(struct cf_platform_data)))
-- goto fail;
--
-- if (at32_init_ide_or_cf(pdev, data->cs, extint))
-- goto fail;
--
-- if (data->detect_pin != GPIO_PIN_NONE)
-- at32_select_gpio(data->detect_pin, AT32_GPIOF_DEGLITCH);
-- if (data->reset_pin != GPIO_PIN_NONE)
-- at32_select_gpio(data->reset_pin, 0);
-- if (data->vcc_pin != GPIO_PIN_NONE)
-- at32_select_gpio(data->vcc_pin, 0);
-- /* READY is used as extint, so we can't select it as gpio */
--
-- platform_device_add(pdev);
-- return pdev;
+-void __init at32_clock_init(void)
++void __init setup_platform(void)
+ {
+ u32 cpu_mask = 0, hsb_mask = 0, pba_mask = 0, pbb_mask = 0;
+ int i;
+@@ -1794,4 +2175,36 @@
+ pm_writel(HSB_MASK, hsb_mask);
+ pm_writel(PBA_MASK, pba_mask);
+ pm_writel(PBB_MASK, pbb_mask);
++
++ /* Initialize the port muxes */
++ at32_init_pio(&pio0_device);
++ at32_init_pio(&pio1_device);
++ at32_init_pio(&pio2_device);
++ at32_init_pio(&pio3_device);
++ at32_init_pio(&pio4_device);
++}
++
++struct gen_pool *sram_pool;
++
++static int __init sram_init(void)
++{
++ struct gen_pool *pool;
++
++ /* 1KiB granularity */
++ pool = gen_pool_create(10, -1);
++ if (!pool)
++ goto fail;
++
++ if (gen_pool_add(pool, 0x24000000, 0x8000, -1))
++ goto err_pool_add;
++
++ sram_pool = pool;
++ return 0;
++
++err_pool_add:
++ gen_pool_destroy(pool);
++fail:
++ pr_err("Failed to create SRAM pool\n");
++ return -ENOMEM;
+ }
++core_initcall(sram_init);
+diff --exclude=.git -urN linux-2.6.25.6/arch/avr32/mach-at32ap/at32ap.c avr32-2.6/arch/avr32/mach-at32ap/at32ap.c
+--- linux-2.6.25.6/arch/avr32/mach-at32ap/at32ap.c 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/avr32/mach-at32ap/at32ap.c 1970-01-01 01:00:00.000000000 +0100
+@@ -1,56 +0,0 @@
+-/*
+- * Copyright (C) 2006 Atmel Corporation
+- *
+- * This program is free software; you can redistribute it and/or modify
+- * it under the terms of the GNU General Public License version 2 as
+- * published by the Free Software Foundation.
+- */
-
--fail:
-- platform_device_put(pdev);
-- return NULL;
--}
+-#include <linux/clk.h>
+-#include <linux/err.h>
+-#include <linux/init.h>
+-#include <linux/platform_device.h>
-
--/* --------------------------------------------------------------------
-- * AC97C
-- * -------------------------------------------------------------------- */
--static struct resource atmel_ac97c0_resource[] __initdata = {
-- PBMEM(0xfff02800),
-- IRQ(29),
--};
--static struct clk atmel_ac97c0_pclk = {
-- .name = "pclk",
-- .parent = &pbb_clk,
-- .mode = pbb_clk_mode,
-- .get_rate = pbb_clk_get_rate,
-- .index = 10,
--};
+-#include <asm/arch/init.h>
-
--struct platform_device *__init at32_add_device_ac97c(unsigned int id)
+-void __init setup_platform(void)
-{
-- struct platform_device *pdev;
--
-- if (id != 0)
-- return NULL;
--
-- pdev = platform_device_alloc("atmel_ac97c", id);
-- if (!pdev)
-- return NULL;
--
-- if (platform_device_add_resources(pdev, atmel_ac97c0_resource,
-- ARRAY_SIZE(atmel_ac97c0_resource)))
-- goto err_add_resources;
--
-- select_peripheral(PB(20), PERIPH_B, 0); /* SYNC */
-- select_peripheral(PB(21), PERIPH_B, 0); /* SDO */
-- select_peripheral(PB(22), PERIPH_B, 0); /* SDI */
-- select_peripheral(PB(23), PERIPH_B, 0); /* SCLK */
--
-- atmel_ac97c0_pclk.dev = &pdev->dev;
--
-- platform_device_add(pdev);
-- return pdev;
--
--err_add_resources:
-- platform_device_put(pdev);
-- return NULL;
+- at32_clock_init();
+- at32_portmux_init();
-}
-
--/* --------------------------------------------------------------------
-- * ABDAC
-- * -------------------------------------------------------------------- */
--static struct resource abdac0_resource[] __initdata = {
-- PBMEM(0xfff02000),
-- IRQ(27),
--};
--static struct clk abdac0_pclk = {
-- .name = "pclk",
-- .parent = &pbb_clk,
-- .mode = pbb_clk_mode,
-- .get_rate = pbb_clk_get_rate,
-- .index = 8,
--};
--static struct clk abdac0_sample_clk = {
-- .name = "sample_clk",
-- .mode = genclk_mode,
-- .get_rate = genclk_get_rate,
-- .set_rate = genclk_set_rate,
-- .set_parent = genclk_set_parent,
-- .index = 6,
--};
--
--struct platform_device *__init at32_add_device_abdac(unsigned int id)
+-static int __init pdc_probe(struct platform_device *pdev)
-{
-- struct platform_device *pdev;
--
-- if (id != 0)
-- return NULL;
--
-- pdev = platform_device_alloc("abdac", id);
-- if (!pdev)
-- return NULL;
--
-- if (platform_device_add_resources(pdev, abdac0_resource,
-- ARRAY_SIZE(abdac0_resource)))
-- goto err_add_resources;
--
-- select_peripheral(PB(20), PERIPH_A, 0); /* DATA1 */
-- select_peripheral(PB(21), PERIPH_A, 0); /* DATA0 */
-- select_peripheral(PB(22), PERIPH_A, 0); /* DATAN1 */
-- select_peripheral(PB(23), PERIPH_A, 0); /* DATAN0 */
+- struct clk *pclk, *hclk;
-
-- abdac0_pclk.dev = &pdev->dev;
-- abdac0_sample_clk.dev = &pdev->dev;
+- pclk = clk_get(&pdev->dev, "pclk");
+- if (IS_ERR(pclk)) {
+- dev_err(&pdev->dev, "no pclk defined\n");
+- return PTR_ERR(pclk);
+- }
+- hclk = clk_get(&pdev->dev, "hclk");
+- if (IS_ERR(hclk)) {
+- dev_err(&pdev->dev, "no hclk defined\n");
+- clk_put(pclk);
+- return PTR_ERR(hclk);
+- }
-
-- platform_device_add(pdev);
-- return pdev;
+- clk_enable(pclk);
+- clk_enable(hclk);
-
--err_add_resources:
-- platform_device_put(pdev);
-- return NULL;
+- dev_info(&pdev->dev, "Atmel Peripheral DMA Controller enabled\n");
+- return 0;
-}
-
--/* --------------------------------------------------------------------
-- * GCLK
-- * -------------------------------------------------------------------- */
--static struct clk gclk0 = {
-- .name = "gclk0",
-- .mode = genclk_mode,
-- .get_rate = genclk_get_rate,
-- .set_rate = genclk_set_rate,
-- .set_parent = genclk_set_parent,
-- .index = 0,
--};
--static struct clk gclk1 = {
-- .name = "gclk1",
-- .mode = genclk_mode,
-- .get_rate = genclk_get_rate,
-- .set_rate = genclk_set_rate,
-- .set_parent = genclk_set_parent,
-- .index = 1,
--};
--static struct clk gclk2 = {
-- .name = "gclk2",
-- .mode = genclk_mode,
-- .get_rate = genclk_get_rate,
-- .set_rate = genclk_set_rate,
-- .set_parent = genclk_set_parent,
-- .index = 2,
--};
--static struct clk gclk3 = {
-- .name = "gclk3",
-- .mode = genclk_mode,
-- .get_rate = genclk_get_rate,
-- .set_rate = genclk_set_rate,
-- .set_parent = genclk_set_parent,
-- .index = 3,
--};
--static struct clk gclk4 = {
-- .name = "gclk4",
-- .mode = genclk_mode,
-- .get_rate = genclk_get_rate,
-- .set_rate = genclk_set_rate,
-- .set_parent = genclk_set_parent,
-- .index = 4,
--};
--
--struct clk *at32_clock_list[] = {
-- &osc32k,
-- &osc0,
-- &osc1,
-- &pll0,
-- &pll1,
-- &cpu_clk,
-- &hsb_clk,
-- &pba_clk,
-- &pbb_clk,
-- &at32_pm_pclk,
-- &at32_intc0_pclk,
-- &hmatrix_clk,
-- &ebi_clk,
-- &hramc_clk,
-- &smc0_pclk,
-- &smc0_mck,
-- &pdc_hclk,
-- &pdc_pclk,
-- &dmaca0_hclk,
-- &pico_clk,
-- &pio0_mck,
-- &pio1_mck,
-- &pio2_mck,
-- &pio3_mck,
-- &pio4_mck,
-- &at32_systc0_pclk,
-- &atmel_usart0_usart,
-- &atmel_usart1_usart,
-- &atmel_usart2_usart,
-- &atmel_usart3_usart,
-- &macb0_hclk,
-- &macb0_pclk,
-- &macb1_hclk,
-- &macb1_pclk,
-- &atmel_spi0_spi_clk,
-- &atmel_spi1_spi_clk,
-- &atmel_twi0_pclk,
-- &atmel_mci0_pclk,
-- &atmel_lcdfb0_hck1,
-- &atmel_lcdfb0_pixclk,
-- &ssc0_pclk,
-- &ssc1_pclk,
-- &ssc2_pclk,
-- &usba0_hclk,
-- &usba0_pclk,
-- &atmel_ac97c0_pclk,
-- &abdac0_pclk,
-- &abdac0_sample_clk,
-- &gclk0,
-- &gclk1,
-- &gclk2,
-- &gclk3,
-- &gclk4,
+-static struct platform_driver pdc_driver = {
+- .probe = pdc_probe,
+- .driver = {
+- .name = "pdc",
+- },
-};
--unsigned int at32_nr_clocks = ARRAY_SIZE(at32_clock_list);
-
--void __init at32_portmux_init(void)
+-static int __init pdc_init(void)
-{
-- at32_init_pio(&pio0_device);
-- at32_init_pio(&pio1_device);
-- at32_init_pio(&pio2_device);
-- at32_init_pio(&pio3_device);
-- at32_init_pio(&pio4_device);
+- return platform_driver_register(&pdc_driver);
-}
+-arch_initcall(pdc_init);
+diff --exclude=.git -urN linux-2.6.25.6/arch/avr32/mach-at32ap/cpufreq.c avr32-2.6/arch/avr32/mach-at32ap/cpufreq.c
+--- linux-2.6.25.6/arch/avr32/mach-at32ap/cpufreq.c 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/avr32/mach-at32ap/cpufreq.c 2008-06-12 15:03:55.891816030 +0200
+@@ -108,5 +108,4 @@
+ {
+ return cpufreq_register_driver(&at32_driver);
+ }
-
--void __init at32_clock_init(void)
--{
-- u32 cpu_mask = 0, hsb_mask = 0, pba_mask = 0, pbb_mask = 0;
-- int i;
--
-- if (pm_readl(MCCTRL) & PM_BIT(PLLSEL)) {
-- main_clock = &pll0;
-- cpu_clk.parent = &pll0;
-- } else {
-- main_clock = &osc0;
-- cpu_clk.parent = &osc0;
-- }
--
-- if (pm_readl(PLL0) & PM_BIT(PLLOSC))
-- pll0.parent = &osc1;
-- if (pm_readl(PLL1) & PM_BIT(PLLOSC))
-- pll1.parent = &osc1;
--
-- genclk_init_parent(&gclk0);
-- genclk_init_parent(&gclk1);
-- genclk_init_parent(&gclk2);
-- genclk_init_parent(&gclk3);
-- genclk_init_parent(&gclk4);
-- genclk_init_parent(&atmel_lcdfb0_pixclk);
-- genclk_init_parent(&abdac0_sample_clk);
--
-- /*
-- * Turn on all clocks that have at least one user already, and
-- * turn off everything else. We only do this for module
-- * clocks, and even though it isn't particularly pretty to
-- * check the address of the mode function, it should do the
-- * trick...
-- */
-- for (i = 0; i < ARRAY_SIZE(at32_clock_list); i++) {
-- struct clk *clk = at32_clock_list[i];
--
-- if (clk->users == 0)
-- continue;
--
-- if (clk->mode == &cpu_clk_mode)
-- cpu_mask |= 1 << clk->index;
-- else if (clk->mode == &hsb_clk_mode)
-- hsb_mask |= 1 << clk->index;
-- else if (clk->mode == &pba_clk_mode)
-- pba_mask |= 1 << clk->index;
-- else if (clk->mode == &pbb_clk_mode)
-- pbb_mask |= 1 << clk->index;
-- }
--
-- pm_writel(CPU_MASK, cpu_mask);
-- pm_writel(HSB_MASK, hsb_mask);
-- pm_writel(PBA_MASK, pba_mask);
-- pm_writel(PBB_MASK, pbb_mask);
--}
---- /dev/null
-+++ b/arch/avr32/mach-at32ap/at32ap700x.c
-@@ -0,0 +1,1944 @@
+-arch_initcall(at32_cpufreq_init);
++late_initcall(at32_cpufreq_init);
+diff --exclude=.git -urN linux-2.6.25.6/arch/avr32/mach-at32ap/gpio-dev.c avr32-2.6/arch/avr32/mach-at32ap/gpio-dev.c
+--- linux-2.6.25.6/arch/avr32/mach-at32ap/gpio-dev.c 1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/arch/avr32/mach-at32ap/gpio-dev.c 2008-06-12 15:09:38.723815860 +0200
+@@ -0,0 +1,573 @@
+/*
-+ * Copyright (C) 2005-2006 Atmel Corporation
++ * GPIO /dev and configfs interface
++ *
++ * Copyright (C) 2006-2007 Atmel Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
-+#include <linux/clk.h>
-+#include <linux/fb.h>
-+#include <linux/init.h>
-+#include <linux/platform_device.h>
-+#include <linux/dma-mapping.h>
-+#include <linux/spi/spi.h>
-+#include <linux/usb/atmel_usba_udc.h>
-+
-+#include <asm/io.h>
-+#include <asm/irq.h>
++#include <linux/kernel.h>
++#include <linux/configfs.h>
++#include <linux/cdev.h>
++#include <linux/device.h>
++#include <linux/fs.h>
++#include <linux/interrupt.h>
++#include <linux/module.h>
++#include <linux/poll.h>
++#include <linux/uaccess.h>
++#include <linux/wait.h>
+
-+#include <asm/arch/at32ap700x.h>
-+#include <asm/arch/board.h>
++#include <asm/gpio.h>
+#include <asm/arch/portmux.h>
+
-+#include <video/atmel_lcdc.h>
++#define GPIO_DEV_MAX 8
+
-+#include "clock.h"
-+#include "hmatrix.h"
-+#include "pio.h"
-+#include "pm.h"
++static struct class *gpio_dev_class;
++static dev_t gpio_devt;
+
++struct gpio_item {
++ spinlock_t lock;
+
-+#define PBMEM(base) \
-+ { \
-+ .start = base, \
-+ .end = base + 0x3ff, \
-+ .flags = IORESOURCE_MEM, \
-+ }
-+#define IRQ(num) \
-+ { \
-+ .start = num, \
-+ .end = num, \
-+ .flags = IORESOURCE_IRQ, \
-+ }
-+#define NAMED_IRQ(num, _name) \
-+ { \
-+ .start = num, \
-+ .end = num, \
-+ .name = _name, \
-+ .flags = IORESOURCE_IRQ, \
-+ }
-+
-+/* REVISIT these assume *every* device supports DMA, but several
-+ * don't ... tc, smc, pio, rtc, watchdog, pwm, ps2, and more.
-+ */
-+#define DEFINE_DEV(_name, _id) \
-+static u64 _name##_id##_dma_mask = DMA_32BIT_MASK; \
-+static struct platform_device _name##_id##_device = { \
-+ .name = #_name, \
-+ .id = _id, \
-+ .dev = { \
-+ .dma_mask = &_name##_id##_dma_mask, \
-+ .coherent_dma_mask = DMA_32BIT_MASK, \
-+ }, \
-+ .resource = _name##_id##_resource, \
-+ .num_resources = ARRAY_SIZE(_name##_id##_resource), \
-+}
-+#define DEFINE_DEV_DATA(_name, _id) \
-+static u64 _name##_id##_dma_mask = DMA_32BIT_MASK; \
-+static struct platform_device _name##_id##_device = { \
-+ .name = #_name, \
-+ .id = _id, \
-+ .dev = { \
-+ .dma_mask = &_name##_id##_dma_mask, \
-+ .platform_data = &_name##_id##_data, \
-+ .coherent_dma_mask = DMA_32BIT_MASK, \
-+ }, \
-+ .resource = _name##_id##_resource, \
-+ .num_resources = ARRAY_SIZE(_name##_id##_resource), \
-+}
-+
-+#define select_peripheral(pin, periph, flags) \
-+ at32_select_periph(GPIO_PIN_##pin, GPIO_##periph, flags)
-+
-+#define DEV_CLK(_name, devname, bus, _index) \
-+static struct clk devname##_##_name = { \
-+ .name = #_name, \
-+ .dev = &devname##_device.dev, \
-+ .parent = &bus##_clk, \
-+ .mode = bus##_clk_mode, \
-+ .get_rate = bus##_clk_get_rate, \
-+ .index = _index, \
-+}
-+
-+static DEFINE_SPINLOCK(pm_lock);
-+
-+unsigned long at32ap7000_osc_rates[3] = {
-+ [0] = 32768,
-+ /* FIXME: these are ATSTK1002-specific */
-+ [1] = 20000000,
-+ [2] = 12000000,
-+};
++ int enabled;
++ int initialized;
++ int port;
++ u32 pin_mask;
++ u32 oe_mask;
+
-+static unsigned long osc_get_rate(struct clk *clk)
-+{
-+ return at32ap7000_osc_rates[clk->index];
-+}
++ /* Pin state last time we read it (for blocking reads) */
++ u32 pin_state;
++ int changed;
+
-+static unsigned long pll_get_rate(struct clk *clk, unsigned long control)
-+{
-+ unsigned long div, mul, rate;
++ wait_queue_head_t change_wq;
++ struct fasync_struct *async_queue;
+
-+ if (!(control & PM_BIT(PLLEN)))
-+ return 0;
++ int id;
++ struct class_device *gpio_dev;
++ struct cdev char_dev;
++ struct config_item item;
++};
+
-+ div = PM_BFEXT(PLLDIV, control) + 1;
-+ mul = PM_BFEXT(PLLMUL, control) + 1;
++struct gpio_attribute {
++ struct configfs_attribute attr;
++ ssize_t (*show)(struct gpio_item *, char *);
++ ssize_t (*store)(struct gpio_item *, const char *, size_t);
++};
+
-+ rate = clk->parent->get_rate(clk->parent);
-+ rate = (rate + div / 2) / div;
-+ rate *= mul;
++static irqreturn_t gpio_dev_interrupt(int irq, void *dev_id)
++{
++ struct gpio_item *gpio = dev_id;
++ u32 old_state, new_state;
+
-+ return rate;
-+}
++ old_state = gpio->pin_state;
++ new_state = at32_gpio_get_value_multiple(gpio->port, gpio->pin_mask);
++ gpio->pin_state = new_state;
+
-+static unsigned long pll0_get_rate(struct clk *clk)
-+{
-+ u32 control;
++ if (new_state != old_state) {
++ gpio->changed = 1;
++ wake_up_interruptible(&gpio->change_wq);
+
-+ control = pm_readl(PLL0);
++ if (gpio->async_queue)
++ kill_fasync(&gpio->async_queue, SIGIO, POLL_IN);
++ }
+
-+ return pll_get_rate(clk, control);
++ return IRQ_HANDLED;
+}
+
-+static unsigned long pll1_get_rate(struct clk *clk)
++static int gpio_dev_open(struct inode *inode, struct file *file)
+{
-+ u32 control;
++ struct gpio_item *gpio = container_of(inode->i_cdev,
++ struct gpio_item,
++ char_dev);
++ unsigned int irq;
++ unsigned int i;
++ int ret;
+
-+ control = pm_readl(PLL1);
++ nonseekable_open(inode, file);
++ config_item_get(&gpio->item);
++ file->private_data = gpio;
+
-+ return pll_get_rate(clk, control);
-+}
++ gpio->pin_state = at32_gpio_get_value_multiple(gpio->port,
++ gpio->pin_mask);
++ gpio->changed = 1;
+
-+/*
-+ * The AT32AP7000 has five primary clock sources: One 32kHz
-+ * oscillator, two crystal oscillators and two PLLs.
-+ */
-+static struct clk osc32k = {
-+ .name = "osc32k",
-+ .get_rate = osc_get_rate,
-+ .users = 1,
-+ .index = 0,
-+};
-+static struct clk osc0 = {
-+ .name = "osc0",
-+ .get_rate = osc_get_rate,
-+ .users = 1,
-+ .index = 1,
-+};
-+static struct clk osc1 = {
-+ .name = "osc1",
-+ .get_rate = osc_get_rate,
-+ .index = 2,
-+};
-+static struct clk pll0 = {
-+ .name = "pll0",
-+ .get_rate = pll0_get_rate,
-+ .parent = &osc0,
-+};
-+static struct clk pll1 = {
-+ .name = "pll1",
-+ .get_rate = pll1_get_rate,
-+ .parent = &osc0,
-+};
++ for (i = 0; i < 32; i++) {
++ if (gpio->pin_mask & (1 << i)) {
++ irq = gpio_to_irq(32 * gpio->port + i);
++ ret = request_irq(irq, gpio_dev_interrupt, 0,
++ "gpio-dev", gpio);
++ if (ret)
++ goto err_irq;
++ }
++ }
+
-+/*
-+ * The main clock can be either osc0 or pll0. The boot loader may
-+ * have chosen one for us, so we don't really know which one until we
-+ * have a look at the SM.
-+ */
-+static struct clk *main_clock;
++ return 0;
+
-+/*
-+ * Synchronous clocks are generated from the main clock. The clocks
-+ * must satisfy the constraint
-+ * fCPU >= fHSB >= fPB
-+ * i.e. each clock must not be faster than its parent.
-+ */
-+static unsigned long bus_clk_get_rate(struct clk *clk, unsigned int shift)
-+{
-+ return main_clock->get_rate(main_clock) >> shift;
-+};
++err_irq:
++ while (i--) {
++ if (gpio->pin_mask & (1 << i)) {
++ irq = gpio_to_irq(32 * gpio->port + i);
++ free_irq(irq, gpio);
++ }
++ }
+
-+static void cpu_clk_mode(struct clk *clk, int enabled)
-+{
-+ unsigned long flags;
-+ u32 mask;
++ config_item_put(&gpio->item);
+
-+ spin_lock_irqsave(&pm_lock, flags);
-+ mask = pm_readl(CPU_MASK);
-+ if (enabled)
-+ mask |= 1 << clk->index;
-+ else
-+ mask &= ~(1 << clk->index);
-+ pm_writel(CPU_MASK, mask);
-+ spin_unlock_irqrestore(&pm_lock, flags);
++ return ret;
+}
+
-+static unsigned long cpu_clk_get_rate(struct clk *clk)
++static int gpio_dev_fasync(int fd, struct file *file, int mode)
+{
-+ unsigned long cksel, shift = 0;
-+
-+ cksel = pm_readl(CKSEL);
-+ if (cksel & PM_BIT(CPUDIV))
-+ shift = PM_BFEXT(CPUSEL, cksel) + 1;
++ struct gpio_item *gpio = file->private_data;
+
-+ return bus_clk_get_rate(clk, shift);
++ return fasync_helper(fd, file, mode, &gpio->async_queue);
+}
+
-+static long cpu_clk_set_rate(struct clk *clk, unsigned long rate, int apply)
++static int gpio_dev_release(struct inode *inode, struct file *file)
+{
-+ u32 control;
-+ unsigned long parent_rate, child_div, actual_rate, div;
-+
-+ parent_rate = clk->parent->get_rate(clk->parent);
-+ control = pm_readl(CKSEL);
++ struct gpio_item *gpio = file->private_data;
++ unsigned int irq;
++ unsigned int i;
+
-+ if (control & PM_BIT(HSBDIV))
-+ child_div = 1 << (PM_BFEXT(HSBSEL, control) + 1);
-+ else
-+ child_div = 1;
++ gpio_dev_fasync(-1, file, 0);
+
-+ if (rate > 3 * (parent_rate / 4) || child_div == 1) {
-+ actual_rate = parent_rate;
-+ control &= ~PM_BIT(CPUDIV);
-+ } else {
-+ unsigned int cpusel;
-+ div = (parent_rate + rate / 2) / rate;
-+ if (div > child_div)
-+ div = child_div;
-+ cpusel = (div > 1) ? (fls(div) - 2) : 0;
-+ control = PM_BIT(CPUDIV) | PM_BFINS(CPUSEL, cpusel, control);
-+ actual_rate = parent_rate / (1 << (cpusel + 1));
++ for (i = 0; i < 32; i++) {
++ if (gpio->pin_mask & (1 << i)) {
++ irq = gpio_to_irq(32 * gpio->port + i);
++ free_irq(irq, gpio);
++ }
+ }
+
-+ pr_debug("clk %s: new rate %lu (actual rate %lu)\n",
-+ clk->name, rate, actual_rate);
-+
-+ if (apply)
-+ pm_writel(CKSEL, control);
++ config_item_put(&gpio->item);
+
-+ return actual_rate;
++ return 0;
+}
+
-+static void hsb_clk_mode(struct clk *clk, int enabled)
++static unsigned int gpio_dev_poll(struct file *file, poll_table *wait)
+{
-+ unsigned long flags;
-+ u32 mask;
++ struct gpio_item *gpio = file->private_data;
++ unsigned int mask = 0;
+
-+ spin_lock_irqsave(&pm_lock, flags);
-+ mask = pm_readl(HSB_MASK);
-+ if (enabled)
-+ mask |= 1 << clk->index;
-+ else
-+ mask &= ~(1 << clk->index);
-+ pm_writel(HSB_MASK, mask);
-+ spin_unlock_irqrestore(&pm_lock, flags);
++ poll_wait(file, &gpio->change_wq, wait);
++ if (gpio->changed)
++ mask |= POLLIN | POLLRDNORM;
++
++ return mask;
+}
+
-+static unsigned long hsb_clk_get_rate(struct clk *clk)
++static ssize_t gpio_dev_read(struct file *file, char __user *buf,
++ size_t count, loff_t *offset)
+{
-+ unsigned long cksel, shift = 0;
++ struct gpio_item *gpio = file->private_data;
++ u32 value;
++
++ spin_lock_irq(&gpio->lock);
++ while (!gpio->changed) {
++ spin_unlock_irq(&gpio->lock);
+
-+ cksel = pm_readl(CKSEL);
-+ if (cksel & PM_BIT(HSBDIV))
-+ shift = PM_BFEXT(HSBSEL, cksel) + 1;
++ if (file->f_flags & O_NONBLOCK)
++ return -EAGAIN;
+
-+ return bus_clk_get_rate(clk, shift);
-+}
++ if (wait_event_interruptible(gpio->change_wq, gpio->changed))
++ return -ERESTARTSYS;
+
-+static void pba_clk_mode(struct clk *clk, int enabled)
-+{
-+ unsigned long flags;
-+ u32 mask;
++ spin_lock_irq(&gpio->lock);
++ }
+
-+ spin_lock_irqsave(&pm_lock, flags);
-+ mask = pm_readl(PBA_MASK);
-+ if (enabled)
-+ mask |= 1 << clk->index;
-+ else
-+ mask &= ~(1 << clk->index);
-+ pm_writel(PBA_MASK, mask);
-+ spin_unlock_irqrestore(&pm_lock, flags);
-+}
++ gpio->changed = 0;
++ value = at32_gpio_get_value_multiple(gpio->port, gpio->pin_mask);
+
-+static unsigned long pba_clk_get_rate(struct clk *clk)
-+{
-+ unsigned long cksel, shift = 0;
++ spin_unlock_irq(&gpio->lock);
+
-+ cksel = pm_readl(CKSEL);
-+ if (cksel & PM_BIT(PBADIV))
-+ shift = PM_BFEXT(PBASEL, cksel) + 1;
++ count = min(count, (size_t)4);
++ if (copy_to_user(buf, &value, count))
++ return -EFAULT;
+
-+ return bus_clk_get_rate(clk, shift);
++ return count;
+}
+
-+static void pbb_clk_mode(struct clk *clk, int enabled)
++static ssize_t gpio_dev_write(struct file *file, const char __user *buf,
++ size_t count, loff_t *offset)
+{
-+ unsigned long flags;
-+ u32 mask;
++ struct gpio_item *gpio = file->private_data;
++ u32 value = 0;
++ u32 mask = ~0UL;
+
-+ spin_lock_irqsave(&pm_lock, flags);
-+ mask = pm_readl(PBB_MASK);
-+ if (enabled)
-+ mask |= 1 << clk->index;
-+ else
-+ mask &= ~(1 << clk->index);
-+ pm_writel(PBB_MASK, mask);
-+ spin_unlock_irqrestore(&pm_lock, flags);
-+}
++ count = min(count, (size_t)4);
++ if (copy_from_user(&value, buf, count))
++ return -EFAULT;
+
-+static unsigned long pbb_clk_get_rate(struct clk *clk)
-+{
-+ unsigned long cksel, shift = 0;
++ /* Assuming big endian */
++ mask <<= (4 - count) * 8;
++ mask &= gpio->pin_mask;
+
-+ cksel = pm_readl(CKSEL);
-+ if (cksel & PM_BIT(PBBDIV))
-+ shift = PM_BFEXT(PBBSEL, cksel) + 1;
++ at32_gpio_set_value_multiple(gpio->port, value, mask);
+
-+ return bus_clk_get_rate(clk, shift);
++ return count;
+}
+
-+static struct clk cpu_clk = {
-+ .name = "cpu",
-+ .get_rate = cpu_clk_get_rate,
-+ .set_rate = cpu_clk_set_rate,
-+ .users = 1,
-+};
-+static struct clk hsb_clk = {
-+ .name = "hsb",
-+ .parent = &cpu_clk,
-+ .get_rate = hsb_clk_get_rate,
-+};
-+static struct clk pba_clk = {
-+ .name = "pba",
-+ .parent = &hsb_clk,
-+ .mode = hsb_clk_mode,
-+ .get_rate = pba_clk_get_rate,
-+ .index = 1,
-+};
-+static struct clk pbb_clk = {
-+ .name = "pbb",
-+ .parent = &hsb_clk,
-+ .mode = hsb_clk_mode,
-+ .get_rate = pbb_clk_get_rate,
-+ .users = 1,
-+ .index = 2,
++static struct file_operations gpio_dev_fops = {
++ .owner = THIS_MODULE,
++ .llseek = no_llseek,
++ .open = gpio_dev_open,
++ .release = gpio_dev_release,
++ .fasync = gpio_dev_fasync,
++ .poll = gpio_dev_poll,
++ .read = gpio_dev_read,
++ .write = gpio_dev_write,
+};
+
-+/* --------------------------------------------------------------------
-+ * Generic Clock operations
-+ * -------------------------------------------------------------------- */
-+
-+static void genclk_mode(struct clk *clk, int enabled)
++static struct gpio_item *to_gpio_item(struct config_item *item)
+{
-+ u32 control;
-+
-+ control = pm_readl(GCCTRL(clk->index));
-+ if (enabled)
-+ control |= PM_BIT(CEN);
-+ else
-+ control &= ~PM_BIT(CEN);
-+ pm_writel(GCCTRL(clk->index), control);
++ return item ? container_of(item, struct gpio_item, item) : NULL;
+}
+
-+static unsigned long genclk_get_rate(struct clk *clk)
++static ssize_t gpio_show_gpio_id(struct gpio_item *gpio, char *page)
+{
-+ u32 control;
-+ unsigned long div = 1;
-+
-+ control = pm_readl(GCCTRL(clk->index));
-+ if (control & PM_BIT(DIVEN))
-+ div = 2 * (PM_BFEXT(DIV, control) + 1);
-+
-+ return clk->parent->get_rate(clk->parent) / div;
++ return sprintf(page, "%d\n", gpio->port);
+}
+
-+static long genclk_set_rate(struct clk *clk, unsigned long rate, int apply)
++static ssize_t gpio_store_gpio_id(struct gpio_item *gpio,
++ const char *page, size_t count)
+{
-+ u32 control;
-+ unsigned long parent_rate, actual_rate, div;
++ unsigned long id;
++ char *p = (char *)page;
++ ssize_t ret = -EINVAL;
+
-+ parent_rate = clk->parent->get_rate(clk->parent);
-+ control = pm_readl(GCCTRL(clk->index));
++ id = simple_strtoul(p, &p, 0);
++ if (!p || (*p && (*p != '\n')))
++ return -EINVAL;
+
-+ if (rate > 3 * parent_rate / 4) {
-+ actual_rate = parent_rate;
-+ control &= ~PM_BIT(DIVEN);
-+ } else {
-+ div = (parent_rate + rate) / (2 * rate) - 1;
-+ control = PM_BFINS(DIV, div, control) | PM_BIT(DIVEN);
-+ actual_rate = parent_rate / (2 * (div + 1));
++ /* Switching PIO is not allowed when live... */
++ spin_lock(&gpio->lock);
++ if (!gpio->enabled) {
++ ret = -ENXIO;
++ if (at32_gpio_port_is_valid(id)) {
++ gpio->port = id;
++ ret = count;
++ }
+ }
++ spin_unlock(&gpio->lock);
+
-+ dev_dbg(clk->dev, "clk %s: new rate %lu (actual rate %lu)\n",
-+ clk->name, rate, actual_rate);
-+
-+ if (apply)
-+ pm_writel(GCCTRL(clk->index), control);
++ return ret;
++}
+
-+ return actual_rate;
++static ssize_t gpio_show_pin_mask(struct gpio_item *gpio, char *page)
++{
++ return sprintf(page, "0x%08x\n", gpio->pin_mask);
+}
+
-+int genclk_set_parent(struct clk *clk, struct clk *parent)
++static ssize_t gpio_store_pin_mask(struct gpio_item *gpio,
++ const char *page, size_t count)
+{
-+ u32 control;
++ u32 new_mask;
++ char *p = (char *)page;
++ ssize_t ret = -EINVAL;
+
-+ dev_dbg(clk->dev, "clk %s: new parent %s (was %s)\n",
-+ clk->name, parent->name, clk->parent->name);
-+
-+ control = pm_readl(GCCTRL(clk->index));
-+
-+ if (parent == &osc1 || parent == &pll1)
-+ control |= PM_BIT(OSCSEL);
-+ else if (parent == &osc0 || parent == &pll0)
-+ control &= ~PM_BIT(OSCSEL);
-+ else
++ new_mask = simple_strtoul(p, &p, 0);
++ if (!p || (*p && (*p != '\n')))
+ return -EINVAL;
+
-+ if (parent == &pll0 || parent == &pll1)
-+ control |= PM_BIT(PLLSEL);
-+ else
-+ control &= ~PM_BIT(PLLSEL);
++ /* Can't update the pin mask while live. */
++ spin_lock(&gpio->lock);
++ if (!gpio->enabled) {
++ gpio->oe_mask &= new_mask;
++ gpio->pin_mask = new_mask;
++ ret = count;
++ }
++ spin_unlock(&gpio->lock);
+
-+ pm_writel(GCCTRL(clk->index), control);
-+ clk->parent = parent;
++ return ret;
++}
+
-+ return 0;
++static ssize_t gpio_show_oe_mask(struct gpio_item *gpio, char *page)
++{
++ return sprintf(page, "0x%08x\n", gpio->oe_mask);
+}
+
-+static void __init genclk_init_parent(struct clk *clk)
++static ssize_t gpio_store_oe_mask(struct gpio_item *gpio,
++ const char *page, size_t count)
+{
-+ u32 control;
-+ struct clk *parent;
++ u32 mask;
++ char *p = (char *)page;
++ ssize_t ret = -EINVAL;
+
-+ BUG_ON(clk->index > 7);
++ mask = simple_strtoul(p, &p, 0);
++ if (!p || (*p && (*p != '\n')))
++ return -EINVAL;
+
-+ control = pm_readl(GCCTRL(clk->index));
-+ if (control & PM_BIT(OSCSEL))
-+ parent = (control & PM_BIT(PLLSEL)) ? &pll1 : &osc1;
-+ else
-+ parent = (control & PM_BIT(PLLSEL)) ? &pll0 : &osc0;
++ spin_lock(&gpio->lock);
++ if (!gpio->enabled) {
++ gpio->oe_mask = mask & gpio->pin_mask;
++ ret = count;
++ }
++ spin_unlock(&gpio->lock);
+
-+ clk->parent = parent;
++ return ret;
+}
+
-+/* --------------------------------------------------------------------
-+ * System peripherals
-+ * -------------------------------------------------------------------- */
-+static struct resource at32_pm0_resource[] = {
-+ {
-+ .start = 0xfff00000,
-+ .end = 0xfff0007f,
-+ .flags = IORESOURCE_MEM,
-+ },
-+ IRQ(20),
-+};
++static ssize_t gpio_show_enabled(struct gpio_item *gpio, char *page)
++{
++ return sprintf(page, "%d\n", gpio->enabled);
++}
+
-+static struct resource at32ap700x_rtc0_resource[] = {
-+ {
-+ .start = 0xfff00080,
-+ .end = 0xfff000af,
-+ .flags = IORESOURCE_MEM,
-+ },
-+ IRQ(21),
-+};
++static ssize_t gpio_store_enabled(struct gpio_item *gpio,
++ const char *page, size_t count)
++{
++ char *p = (char *)page;
++ int enabled;
++ int ret;
+
-+static struct resource at32_wdt0_resource[] = {
-+ {
-+ .start = 0xfff000b0,
-+ .end = 0xfff000cf,
-+ .flags = IORESOURCE_MEM,
-+ },
-+};
++ enabled = simple_strtoul(p, &p, 0);
++ if (!p || (*p && (*p != '\n')))
++ return -EINVAL;
+
-+static struct resource at32_eic0_resource[] = {
-+ {
-+ .start = 0xfff00100,
-+ .end = 0xfff0013f,
-+ .flags = IORESOURCE_MEM,
-+ },
-+ IRQ(19),
-+};
++ /* make it a boolean value */
++ enabled = !!enabled;
+
-+DEFINE_DEV(at32_pm, 0);
-+DEFINE_DEV(at32ap700x_rtc, 0);
-+DEFINE_DEV(at32_wdt, 0);
-+DEFINE_DEV(at32_eic, 0);
++ if (gpio->enabled == enabled)
++ /* No change; do nothing. */
++ return count;
+
-+/*
-+ * Peripheral clock for PM, RTC, WDT and EIC. PM will ensure that this
-+ * is always running.
-+ */
-+static struct clk at32_pm_pclk = {
-+ .name = "pclk",
-+ .dev = &at32_pm0_device.dev,
-+ .parent = &pbb_clk,
-+ .mode = pbb_clk_mode,
-+ .get_rate = pbb_clk_get_rate,
-+ .users = 1,
-+ .index = 0,
-+};
++ BUG_ON(gpio->id >= GPIO_DEV_MAX);
+
-+static struct resource intc0_resource[] = {
-+ PBMEM(0xfff00400),
-+};
-+struct platform_device at32_intc0_device = {
-+ .name = "intc",
-+ .id = 0,
-+ .resource = intc0_resource,
-+ .num_resources = ARRAY_SIZE(intc0_resource),
-+};
-+DEV_CLK(pclk, at32_intc0, pbb, 1);
++ if (!enabled) {
++ class_device_unregister(gpio->gpio_dev);
++ cdev_del(&gpio->char_dev);
++ at32_deselect_pins(gpio->port, gpio->pin_mask);
++ gpio->initialized = 0;
++ } else {
++ if (gpio->port < 0 || !gpio->pin_mask)
++ return -ENODEV;
++ }
+
-+static struct clk ebi_clk = {
-+ .name = "ebi",
-+ .parent = &hsb_clk,
-+ .mode = hsb_clk_mode,
-+ .get_rate = hsb_clk_get_rate,
-+ .users = 1,
-+};
-+static struct clk hramc_clk = {
-+ .name = "hramc",
-+ .parent = &hsb_clk,
-+ .mode = hsb_clk_mode,
-+ .get_rate = hsb_clk_get_rate,
-+ .users = 1,
-+ .index = 3,
-+};
++ /* Disallow any updates to gpio_id or pin_mask */
++ spin_lock(&gpio->lock);
++ gpio->enabled = enabled;
++ spin_unlock(&gpio->lock);
+
-+static struct resource smc0_resource[] = {
-+ PBMEM(0xfff03400),
-+};
-+DEFINE_DEV(smc, 0);
-+DEV_CLK(pclk, smc0, pbb, 13);
-+DEV_CLK(mck, smc0, hsb, 0);
++ if (!enabled)
++ return count;
+
-+static struct platform_device pdc_device = {
-+ .name = "pdc",
-+ .id = 0,
-+};
-+DEV_CLK(hclk, pdc, hsb, 4);
-+DEV_CLK(pclk, pdc, pba, 16);
-+
-+static struct clk pico_clk = {
-+ .name = "pico",
-+ .parent = &cpu_clk,
-+ .mode = cpu_clk_mode,
-+ .get_rate = cpu_clk_get_rate,
-+ .users = 1,
-+};
++ /* Now, try to allocate the pins */
++ ret = at32_select_gpio_pins(gpio->port, gpio->pin_mask, gpio->oe_mask);
++ if (ret)
++ goto err_alloc_pins;
+
-+static struct resource dmaca0_resource[] = {
-+ {
-+ .start = 0xff200000,
-+ .end = 0xff20ffff,
-+ .flags = IORESOURCE_MEM,
-+ },
-+ IRQ(2),
-+};
-+DEFINE_DEV(dmaca, 0);
-+DEV_CLK(hclk, dmaca0, hsb, 10);
++ gpio->initialized = 1;
+
-+/* --------------------------------------------------------------------
-+ * HMATRIX
-+ * -------------------------------------------------------------------- */
++ cdev_init(&gpio->char_dev, &gpio_dev_fops);
++ gpio->char_dev.owner = THIS_MODULE;
++ ret = cdev_add(&gpio->char_dev, MKDEV(MAJOR(gpio_devt), gpio->id), 1);
++ if (ret < 0)
++ goto err_cdev_add;
++ gpio->gpio_dev = class_device_create(gpio_dev_class, NULL,
++ MKDEV(MAJOR(gpio_devt), gpio->id),
++ NULL,
++ "gpio%d", gpio->id);
++ if (IS_ERR(gpio->gpio_dev)) {
++ printk(KERN_ERR "failed to create gpio%d\n", gpio->id);
++ ret = PTR_ERR(gpio->gpio_dev);
++ goto err_class_dev;
++ }
+
-+static struct clk hmatrix_clk = {
-+ .name = "hmatrix_clk",
-+ .parent = &pbb_clk,
-+ .mode = pbb_clk_mode,
-+ .get_rate = pbb_clk_get_rate,
-+ .index = 2,
-+ .users = 1,
-+};
-+#define HMATRIX_BASE ((void __iomem *)0xfff00800)
++ printk(KERN_INFO "created gpio%d (port%d/0x%08x) as (%d:%d)\n",
++ gpio->id, gpio->port, gpio->pin_mask,
++ MAJOR(gpio->gpio_dev->devt), MINOR(gpio->gpio_dev->devt));
+
-+#define hmatrix_readl(reg) \
-+ __raw_readl((HMATRIX_BASE) + HMATRIX_##reg)
-+#define hmatrix_writel(reg,value) \
-+ __raw_writel((value), (HMATRIX_BASE) + HMATRIX_##reg)
++ return 0;
+
-+/*
-+ * Set bits in the HMATRIX Special Function Register (SFR) used by the
-+ * External Bus Interface (EBI). This can be used to enable special
-+ * features like CompactFlash support, NAND Flash support, etc. on
-+ * certain chipselects.
-+ */
-+static inline void set_ebi_sfr_bits(u32 mask)
-+{
-+ u32 sfr;
++err_class_dev:
++ cdev_del(&gpio->char_dev);
++err_cdev_add:
++ at32_deselect_pins(gpio->port, gpio->pin_mask);
++ gpio->initialized = 0;
++err_alloc_pins:
++ spin_lock(&gpio->lock);
++ gpio->enabled = 0;
++ spin_unlock(&gpio->lock);
+
-+ clk_enable(&hmatrix_clk);
-+ sfr = hmatrix_readl(SFR4);
-+ sfr |= mask;
-+ hmatrix_writel(SFR4, sfr);
-+ clk_disable(&hmatrix_clk);
++ return ret;
+}
+
-+/* --------------------------------------------------------------------
-+ * Timer/Counter (TC)
-+ * -------------------------------------------------------------------- */
-+
-+static struct resource at32_tcb0_resource[] = {
-+ PBMEM(0xfff00c00),
-+ IRQ(22),
-+};
-+static struct platform_device at32_tcb0_device = {
-+ .name = "atmel_tcb",
-+ .id = 0,
-+ .resource = at32_tcb0_resource,
-+ .num_resources = ARRAY_SIZE(at32_tcb0_resource),
-+};
-+DEV_CLK(t0_clk, at32_tcb0, pbb, 3);
-+
-+static struct resource at32_tcb1_resource[] = {
-+ PBMEM(0xfff01000),
-+ IRQ(23),
++static struct gpio_attribute gpio_item_attr_gpio_id = {
++ .attr = {
++ .ca_owner = THIS_MODULE,
++ .ca_name = "gpio_id",
++ .ca_mode = S_IRUGO | S_IWUSR,
++ },
++ .show = gpio_show_gpio_id,
++ .store = gpio_store_gpio_id,
+};
-+static struct platform_device at32_tcb1_device = {
-+ .name = "atmel_tcb",
-+ .id = 1,
-+ .resource = at32_tcb1_resource,
-+ .num_resources = ARRAY_SIZE(at32_tcb1_resource),
++static struct gpio_attribute gpio_item_attr_pin_mask = {
++ .attr = {
++ .ca_owner = THIS_MODULE,
++ .ca_name = "pin_mask",
++ .ca_mode = S_IRUGO | S_IWUSR,
++ },
++ .show = gpio_show_pin_mask,
++ .store = gpio_store_pin_mask,
+};
-+DEV_CLK(t0_clk, at32_tcb1, pbb, 4);
-+
-+/* --------------------------------------------------------------------
-+ * PIO
-+ * -------------------------------------------------------------------- */
-+
-+static struct resource pio0_resource[] = {
-+ PBMEM(0xffe02800),
-+ IRQ(13),
++static struct gpio_attribute gpio_item_attr_oe_mask = {
++ .attr = {
++ .ca_owner = THIS_MODULE,
++ .ca_name = "oe_mask",
++ .ca_mode = S_IRUGO | S_IWUSR,
++ },
++ .show = gpio_show_oe_mask,
++ .store = gpio_store_oe_mask,
+};
-+DEFINE_DEV(pio, 0);
-+DEV_CLK(mck, pio0, pba, 10);
-+
-+static struct resource pio1_resource[] = {
-+ PBMEM(0xffe02c00),
-+ IRQ(14),
++static struct gpio_attribute gpio_item_attr_enabled = {
++ .attr = {
++ .ca_owner = THIS_MODULE,
++ .ca_name = "enabled",
++ .ca_mode = S_IRUGO | S_IWUSR,
++ },
++ .show = gpio_show_enabled,
++ .store = gpio_store_enabled,
+};
-+DEFINE_DEV(pio, 1);
-+DEV_CLK(mck, pio1, pba, 11);
+
-+static struct resource pio2_resource[] = {
-+ PBMEM(0xffe03000),
-+ IRQ(15),
++static struct configfs_attribute *gpio_item_attrs[] = {
++ &gpio_item_attr_gpio_id.attr,
++ &gpio_item_attr_pin_mask.attr,
++ &gpio_item_attr_oe_mask.attr,
++ &gpio_item_attr_enabled.attr,
++ NULL,
+};
-+DEFINE_DEV(pio, 2);
-+DEV_CLK(mck, pio2, pba, 12);
+
-+static struct resource pio3_resource[] = {
-+ PBMEM(0xffe03400),
-+ IRQ(16),
-+};
-+DEFINE_DEV(pio, 3);
-+DEV_CLK(mck, pio3, pba, 13);
++static ssize_t gpio_show_attr(struct config_item *item,
++ struct configfs_attribute *attr,
++ char *page)
++{
++ struct gpio_item *gpio_item = to_gpio_item(item);
++ struct gpio_attribute *gpio_attr
++ = container_of(attr, struct gpio_attribute, attr);
++ ssize_t ret = 0;
+
-+static struct resource pio4_resource[] = {
-+ PBMEM(0xffe03800),
-+ IRQ(17),
-+};
-+DEFINE_DEV(pio, 4);
-+DEV_CLK(mck, pio4, pba, 14);
++ if (gpio_attr->show)
++ ret = gpio_attr->show(gpio_item, page);
++ return ret;
++}
+
-+void __init at32_add_system_devices(void)
++static ssize_t gpio_store_attr(struct config_item *item,
++ struct configfs_attribute *attr,
++ const char *page, size_t count)
+{
-+ platform_device_register(&at32_pm0_device);
-+ platform_device_register(&at32_intc0_device);
-+ platform_device_register(&at32ap700x_rtc0_device);
-+ platform_device_register(&at32_wdt0_device);
-+ platform_device_register(&at32_eic0_device);
-+ platform_device_register(&smc0_device);
-+ platform_device_register(&pdc_device);
-+ platform_device_register(&dmaca0_device);
++ struct gpio_item *gpio_item = to_gpio_item(item);
++ struct gpio_attribute *gpio_attr
++ = container_of(attr, struct gpio_attribute, attr);
++ ssize_t ret = -EINVAL;
+
-+ platform_device_register(&at32_tcb0_device);
-+ platform_device_register(&at32_tcb1_device);
++ if (gpio_attr->store)
++ ret = gpio_attr->store(gpio_item, page, count);
++ return ret;
++}
+
-+ platform_device_register(&pio0_device);
-+ platform_device_register(&pio1_device);
-+ platform_device_register(&pio2_device);
-+ platform_device_register(&pio3_device);
-+ platform_device_register(&pio4_device);
++static void gpio_release(struct config_item *item)
++{
++ kfree(to_gpio_item(item));
+}
+
-+/* --------------------------------------------------------------------
-+ * PSIF
-+ * -------------------------------------------------------------------- */
-+static struct resource atmel_psif0_resource[] __initdata = {
-+ {
-+ .start = 0xffe03c00,
-+ .end = 0xffe03cff,
-+ .flags = IORESOURCE_MEM,
-+ },
-+ IRQ(18),
-+};
-+static struct clk atmel_psif0_pclk = {
-+ .name = "pclk",
-+ .parent = &pba_clk,
-+ .mode = pba_clk_mode,
-+ .get_rate = pba_clk_get_rate,
-+ .index = 15,
++static struct configfs_item_operations gpio_item_ops = {
++ .release = gpio_release,
++ .show_attribute = gpio_show_attr,
++ .store_attribute = gpio_store_attr,
+};
+
-+static struct resource atmel_psif1_resource[] __initdata = {
-+ {
-+ .start = 0xffe03d00,
-+ .end = 0xffe03dff,
-+ .flags = IORESOURCE_MEM,
-+ },
-+ IRQ(18),
-+};
-+static struct clk atmel_psif1_pclk = {
-+ .name = "pclk",
-+ .parent = &pba_clk,
-+ .mode = pba_clk_mode,
-+ .get_rate = pba_clk_get_rate,
-+ .index = 15,
++static struct config_item_type gpio_item_type = {
++ .ct_item_ops = &gpio_item_ops,
++ .ct_attrs = gpio_item_attrs,
++ .ct_owner = THIS_MODULE,
+};
+
-+struct platform_device *__init at32_add_device_psif(unsigned int id)
++static struct config_item *gpio_make_item(struct config_group *group,
++ const char *name)
+{
-+ struct platform_device *pdev;
-+
-+ if (!(id == 0 || id == 1))
-+ return NULL;
++ static int next_id;
++ struct gpio_item *gpio;
+
-+ pdev = platform_device_alloc("atmel_psif", id);
-+ if (!pdev)
++ if (next_id >= GPIO_DEV_MAX)
+ return NULL;
+
-+ switch (id) {
-+ case 0:
-+ if (platform_device_add_resources(pdev, atmel_psif0_resource,
-+ ARRAY_SIZE(atmel_psif0_resource)))
-+ goto err_add_resources;
-+ atmel_psif0_pclk.dev = &pdev->dev;
-+ select_peripheral(PA(8), PERIPH_A, 0); /* CLOCK */
-+ select_peripheral(PA(9), PERIPH_A, 0); /* DATA */
-+ break;
-+ case 1:
-+ if (platform_device_add_resources(pdev, atmel_psif1_resource,
-+ ARRAY_SIZE(atmel_psif1_resource)))
-+ goto err_add_resources;
-+ atmel_psif1_pclk.dev = &pdev->dev;
-+ select_peripheral(PB(11), PERIPH_A, 0); /* CLOCK */
-+ select_peripheral(PB(12), PERIPH_A, 0); /* DATA */
-+ break;
-+ default:
++ gpio = kzalloc(sizeof(struct gpio_item), GFP_KERNEL);
++ if (!gpio)
+ return NULL;
-+ }
+
-+ platform_device_add(pdev);
-+ return pdev;
++ gpio->id = next_id++;
++ config_item_init_type_name(&gpio->item, name, &gpio_item_type);
++ spin_lock_init(&gpio->lock);
++ init_waitqueue_head(&gpio->change_wq);
+
-+err_add_resources:
-+ platform_device_put(pdev);
-+ return NULL;
++ return &gpio->item;
+}
+
-+/* --------------------------------------------------------------------
-+ * USART
-+ * -------------------------------------------------------------------- */
++static void gpio_drop_item(struct config_group *group,
++ struct config_item *item)
++{
++ struct gpio_item *gpio = to_gpio_item(item);
+
-+static struct atmel_uart_data atmel_usart0_data = {
-+ .use_dma_tx = 1,
-+ .use_dma_rx = 1,
-+};
-+static struct resource atmel_usart0_resource[] = {
-+ PBMEM(0xffe00c00),
-+ IRQ(6),
-+};
-+DEFINE_DEV_DATA(atmel_usart, 0);
-+DEV_CLK(usart, atmel_usart0, pba, 3);
++ spin_lock(&gpio->lock);
++ if (gpio->enabled) {
++ class_device_unregister(gpio->gpio_dev);
++ cdev_del(&gpio->char_dev);
++ }
+
-+static struct atmel_uart_data atmel_usart1_data = {
-+ .use_dma_tx = 1,
-+ .use_dma_rx = 1,
-+};
-+static struct resource atmel_usart1_resource[] = {
-+ PBMEM(0xffe01000),
-+ IRQ(7),
-+};
-+DEFINE_DEV_DATA(atmel_usart, 1);
-+DEV_CLK(usart, atmel_usart1, pba, 4);
++ if (gpio->initialized) {
++ at32_deselect_pins(gpio->port, gpio->pin_mask);
++ gpio->initialized = 0;
++ gpio->enabled = 0;
++ }
++ spin_unlock(&gpio->lock);
++}
+
-+static struct atmel_uart_data atmel_usart2_data = {
-+ .use_dma_tx = 1,
-+ .use_dma_rx = 1,
-+};
-+static struct resource atmel_usart2_resource[] = {
-+ PBMEM(0xffe01400),
-+ IRQ(8),
++static struct configfs_group_operations gpio_group_ops = {
++ .make_item = gpio_make_item,
++ .drop_item = gpio_drop_item,
+};
-+DEFINE_DEV_DATA(atmel_usart, 2);
-+DEV_CLK(usart, atmel_usart2, pba, 5);
+
-+static struct atmel_uart_data atmel_usart3_data = {
-+ .use_dma_tx = 1,
-+ .use_dma_rx = 1,
++static struct config_item_type gpio_group_type = {
++ .ct_group_ops = &gpio_group_ops,
++ .ct_owner = THIS_MODULE,
+};
-+static struct resource atmel_usart3_resource[] = {
-+ PBMEM(0xffe01800),
-+ IRQ(9),
++
++static struct configfs_subsystem gpio_subsys = {
++ .su_group = {
++ .cg_item = {
++ .ci_namebuf = "gpio",
++ .ci_type = &gpio_group_type,
++ },
++ },
+};
-+DEFINE_DEV_DATA(atmel_usart, 3);
-+DEV_CLK(usart, atmel_usart3, pba, 6);
+
-+static inline void configure_usart0_pins(void)
++static int __init gpio_dev_init(void)
+{
-+ select_peripheral(PA(8), PERIPH_B, 0); /* RXD */
-+ select_peripheral(PA(9), PERIPH_B, 0); /* TXD */
-+}
++ int err;
+
-+static inline void configure_usart1_pins(void)
-+{
-+ select_peripheral(PA(17), PERIPH_A, 0); /* RXD */
-+ select_peripheral(PA(18), PERIPH_A, 0); /* TXD */
-+}
++ gpio_dev_class = class_create(THIS_MODULE, "gpio-dev");
++ if (IS_ERR(gpio_dev_class)) {
++ err = PTR_ERR(gpio_dev_class);
++ goto err_class_create;
++ }
+
-+static inline void configure_usart2_pins(void)
-+{
-+ select_peripheral(PB(26), PERIPH_B, 0); /* RXD */
-+ select_peripheral(PB(27), PERIPH_B, 0); /* TXD */
-+}
++ err = alloc_chrdev_region(&gpio_devt, 0, GPIO_DEV_MAX, "gpio");
++ if (err < 0)
++ goto err_alloc_chrdev;
++
++ /* Configfs initialization */
++ config_group_init(&gpio_subsys.su_group);
++ mutex_init(&gpio_subsys.su_mutex);
++ err = configfs_register_subsystem(&gpio_subsys);
++ if (err)
++ goto err_register_subsys;
+
-+static inline void configure_usart3_pins(void)
++ return 0;
++
++err_register_subsys:
++ unregister_chrdev_region(gpio_devt, GPIO_DEV_MAX);
++err_alloc_chrdev:
++ class_destroy(gpio_dev_class);
++err_class_create:
++ printk(KERN_WARNING "Failed to initialize gpio /dev interface\n");
++ return err;
++}
++late_initcall(gpio_dev_init);
+diff --exclude=.git -urN linux-2.6.25.6/arch/avr32/mach-at32ap/hsmc.c avr32-2.6/arch/avr32/mach-at32ap/hsmc.c
+--- linux-2.6.25.6/arch/avr32/mach-at32ap/hsmc.c 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/avr32/mach-at32ap/hsmc.c 2008-06-12 15:09:38.723815860 +0200
+@@ -278,4 +278,4 @@
+ {
+ return platform_driver_register(&hsmc_driver);
+ }
+-arch_initcall(hsmc_init);
++core_initcall(hsmc_init);
+diff --exclude=.git -urN linux-2.6.25.6/arch/avr32/mach-at32ap/intc.c avr32-2.6/arch/avr32/mach-at32ap/intc.c
+--- linux-2.6.25.6/arch/avr32/mach-at32ap/intc.c 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/avr32/mach-at32ap/intc.c 2008-06-12 15:09:38.723815860 +0200
+@@ -1,5 +1,5 @@
+ /*
+- * Copyright (C) 2006 Atmel Corporation
++ * Copyright (C) 2006, 2008 Atmel Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+@@ -12,15 +12,20 @@
+ #include <linux/interrupt.h>
+ #include <linux/irq.h>
+ #include <linux/platform_device.h>
++#include <linux/sysdev.h>
+
+-#include <asm/intc.h>
+ #include <asm/io.h>
+
+ #include "intc.h"
+
+ struct intc {
+- void __iomem *regs;
+- struct irq_chip chip;
++ void __iomem *regs;
++ struct irq_chip chip;
++ struct sys_device sysdev;
++#ifdef CONFIG_PM
++ unsigned long suspend_ipr;
++ unsigned long saved_ipr[64];
++#endif
+ };
+
+ extern struct platform_device at32_intc0_device;
+@@ -137,6 +142,74 @@
+ panic("Interrupt controller initialization failed!\n");
+ }
+
++#ifdef CONFIG_PM
++void intc_set_suspend_handler(unsigned long offset)
+{
-+ select_peripheral(PB(18), PERIPH_B, 0); /* RXD */
-+ select_peripheral(PB(17), PERIPH_B, 0); /* TXD */
++ intc0.suspend_ipr = offset;
+}
+
-+static struct platform_device *__initdata at32_usarts[4];
-+
-+void __init at32_map_usart(unsigned int hw_id, unsigned int line)
++static int intc_suspend(struct sys_device *sdev, pm_message_t state)
+{
-+ struct platform_device *pdev;
++ struct intc *intc = container_of(sdev, struct intc, sysdev);
++ int i;
+
-+ switch (hw_id) {
-+ case 0:
-+ pdev = &atmel_usart0_device;
-+ configure_usart0_pins();
-+ break;
-+ case 1:
-+ pdev = &atmel_usart1_device;
-+ configure_usart1_pins();
-+ break;
-+ case 2:
-+ pdev = &atmel_usart2_device;
-+ configure_usart2_pins();
-+ break;
-+ case 3:
-+ pdev = &atmel_usart3_device;
-+ configure_usart3_pins();
-+ break;
-+ default:
-+ return;
++ if (unlikely(!irqs_disabled())) {
++ pr_err("intc_suspend: called with interrupts enabled\n");
++ return -EINVAL;
+ }
+
-+ if (PXSEG(pdev->resource[0].start) == P4SEG) {
-+ /* Addresses in the P4 segment are permanently mapped 1:1 */
-+ struct atmel_uart_data *data = pdev->dev.platform_data;
-+ data->regs = (void __iomem *)pdev->resource[0].start;
++ if (unlikely(!intc->suspend_ipr)) {
++ pr_err("intc_suspend: suspend_ipr not initialized\n");
++ return -EINVAL;
++ }
++
++ for (i = 0; i < 64; i++) {
++ intc->saved_ipr[i] = intc_readl(intc, INTPR0 + 4 * i);
++ intc_writel(intc, INTPR0 + 4 * i, intc->suspend_ipr);
+ }
+
-+ pdev->id = line;
-+ at32_usarts[line] = pdev;
++ return 0;
+}
+
-+struct platform_device *__init at32_add_device_usart(unsigned int id)
++static int intc_resume(struct sys_device *sdev)
+{
-+ platform_device_register(at32_usarts[id]);
-+ return at32_usarts[id];
-+}
++ struct intc *intc = container_of(sdev, struct intc, sysdev);
++ int i;
+
-+struct platform_device *atmel_default_console_device;
++ WARN_ON(!irqs_disabled());
+
-+void __init at32_setup_serial_console(unsigned int usart_id)
-+{
-+ atmel_default_console_device = at32_usarts[usart_id];
-+}
++ for (i = 0; i < 64; i++)
++ intc_writel(intc, INTPR0 + 4 * i, intc->saved_ipr[i]);
+
-+/* --------------------------------------------------------------------
-+ * Ethernet
-+ * -------------------------------------------------------------------- */
++ return 0;
++}
++#else
++#define intc_suspend NULL
++#define intc_resume NULL
++#endif
+
-+#ifdef CONFIG_CPU_AT32AP7000
-+static struct eth_platform_data macb0_data;
-+static struct resource macb0_resource[] = {
-+ PBMEM(0xfff01800),
-+ IRQ(25),
-+};
-+DEFINE_DEV_DATA(macb, 0);
-+DEV_CLK(hclk, macb0, hsb, 8);
-+DEV_CLK(pclk, macb0, pbb, 6);
-+
-+static struct eth_platform_data macb1_data;
-+static struct resource macb1_resource[] = {
-+ PBMEM(0xfff01c00),
-+ IRQ(26),
++static struct sysdev_class intc_class = {
++ .name = "intc",
++ .suspend = intc_suspend,
++ .resume = intc_resume,
+};
-+DEFINE_DEV_DATA(macb, 1);
-+DEV_CLK(hclk, macb1, hsb, 9);
-+DEV_CLK(pclk, macb1, pbb, 7);
+
-+struct platform_device *__init
-+at32_add_device_eth(unsigned int id, struct eth_platform_data *data)
++static int __init intc_init_sysdev(void)
+{
-+ struct platform_device *pdev;
++ int ret;
+
-+ switch (id) {
-+ case 0:
-+ pdev = &macb0_device;
-+
-+ select_peripheral(PC(3), PERIPH_A, 0); /* TXD0 */
-+ select_peripheral(PC(4), PERIPH_A, 0); /* TXD1 */
-+ select_peripheral(PC(7), PERIPH_A, 0); /* TXEN */
-+ select_peripheral(PC(8), PERIPH_A, 0); /* TXCK */
-+ select_peripheral(PC(9), PERIPH_A, 0); /* RXD0 */
-+ select_peripheral(PC(10), PERIPH_A, 0); /* RXD1 */
-+ select_peripheral(PC(13), PERIPH_A, 0); /* RXER */
-+ select_peripheral(PC(15), PERIPH_A, 0); /* RXDV */
-+ select_peripheral(PC(16), PERIPH_A, 0); /* MDC */
-+ select_peripheral(PC(17), PERIPH_A, 0); /* MDIO */
-+
-+ if (!data->is_rmii) {
-+ select_peripheral(PC(0), PERIPH_A, 0); /* COL */
-+ select_peripheral(PC(1), PERIPH_A, 0); /* CRS */
-+ select_peripheral(PC(2), PERIPH_A, 0); /* TXER */
-+ select_peripheral(PC(5), PERIPH_A, 0); /* TXD2 */
-+ select_peripheral(PC(6), PERIPH_A, 0); /* TXD3 */
-+ select_peripheral(PC(11), PERIPH_A, 0); /* RXD2 */
-+ select_peripheral(PC(12), PERIPH_A, 0); /* RXD3 */
-+ select_peripheral(PC(14), PERIPH_A, 0); /* RXCK */
-+ select_peripheral(PC(18), PERIPH_A, 0); /* SPD */
-+ }
-+ break;
++ ret = sysdev_class_register(&intc_class);
++ if (ret)
++ return ret;
+
-+ case 1:
-+ pdev = &macb1_device;
-+
-+ select_peripheral(PD(13), PERIPH_B, 0); /* TXD0 */
-+ select_peripheral(PD(14), PERIPH_B, 0); /* TXD1 */
-+ select_peripheral(PD(11), PERIPH_B, 0); /* TXEN */
-+ select_peripheral(PD(12), PERIPH_B, 0); /* TXCK */
-+ select_peripheral(PD(10), PERIPH_B, 0); /* RXD0 */
-+ select_peripheral(PD(6), PERIPH_B, 0); /* RXD1 */
-+ select_peripheral(PD(5), PERIPH_B, 0); /* RXER */
-+ select_peripheral(PD(4), PERIPH_B, 0); /* RXDV */
-+ select_peripheral(PD(3), PERIPH_B, 0); /* MDC */
-+ select_peripheral(PD(2), PERIPH_B, 0); /* MDIO */
-+
-+ if (!data->is_rmii) {
-+ select_peripheral(PC(19), PERIPH_B, 0); /* COL */
-+ select_peripheral(PC(23), PERIPH_B, 0); /* CRS */
-+ select_peripheral(PC(26), PERIPH_B, 0); /* TXER */
-+ select_peripheral(PC(27), PERIPH_B, 0); /* TXD2 */
-+ select_peripheral(PC(28), PERIPH_B, 0); /* TXD3 */
-+ select_peripheral(PC(29), PERIPH_B, 0); /* RXD2 */
-+ select_peripheral(PC(30), PERIPH_B, 0); /* RXD3 */
-+ select_peripheral(PC(24), PERIPH_B, 0); /* RXCK */
-+ select_peripheral(PD(15), PERIPH_B, 0); /* SPD */
-+ }
-+ break;
++ intc0.sysdev.id = 0;
++ intc0.sysdev.cls = &intc_class;
++ ret = sysdev_register(&intc0.sysdev);
+
-+ default:
-+ return NULL;
-+ }
++ return ret;
++}
++device_initcall(intc_init_sysdev);
+
-+ memcpy(pdev->dev.platform_data, data, sizeof(struct eth_platform_data));
-+ platform_device_register(pdev);
+ unsigned long intc_get_pending(unsigned int group)
+ {
+ return intc_readl(&intc0, INTREQ0 + 4 * group);
+diff --exclude=.git -urN linux-2.6.25.6/arch/avr32/mach-at32ap/Kconfig avr32-2.6/arch/avr32/mach-at32ap/Kconfig
+--- linux-2.6.25.6/arch/avr32/mach-at32ap/Kconfig 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/avr32/mach-at32ap/Kconfig 2008-06-12 15:09:38.719815350 +0200
+@@ -26,6 +26,13 @@
+
+ endchoice
+
++config GPIO_DEV
++ bool "GPIO /dev interface"
++ select CONFIGFS_FS
++ default n
++ help
++ Say `Y' to enable a /dev interface to the GPIO pins.
+
-+ return pdev;
-+}
-+#endif
+ endmenu
+
+ endif # PLATFORM_AT32AP
+diff --exclude=.git -urN linux-2.6.25.6/arch/avr32/mach-at32ap/Makefile avr32-2.6/arch/avr32/mach-at32ap/Makefile
+--- linux-2.6.25.6/arch/avr32/mach-at32ap/Makefile 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/avr32/mach-at32ap/Makefile 2008-06-12 15:09:38.719815350 +0200
+@@ -1,4 +1,9 @@
+-obj-y += at32ap.o clock.o intc.o extint.o pio.o hsmc.o
+-obj-$(CONFIG_CPU_AT32AP700X) += at32ap700x.o
+-obj-$(CONFIG_CPU_AT32AP700X) += time-tc.o
++obj-y += pdc.o clock.o intc.o extint.o pio.o hsmc.o
++obj-$(CONFIG_CPU_AT32AP700X) += at32ap700x.o pm-at32ap700x.o
+ obj-$(CONFIG_CPU_FREQ_AT32AP) += cpufreq.o
++obj-$(CONFIG_GPIO_DEV) += gpio-dev.o
++obj-$(CONFIG_PM) += pm.o
+
-+/* --------------------------------------------------------------------
-+ * SPI
-+ * -------------------------------------------------------------------- */
-+static struct resource atmel_spi0_resource[] = {
-+ PBMEM(0xffe00000),
-+ IRQ(3),
-+};
-+DEFINE_DEV(atmel_spi, 0);
-+DEV_CLK(spi_clk, atmel_spi0, pba, 0);
++ifeq ($(CONFIG_PM_DEBUG),y)
++CFLAGS_pm.o += -DDEBUG
++endif
+diff --exclude=.git -urN linux-2.6.25.6/arch/avr32/mach-at32ap/pdc.c avr32-2.6/arch/avr32/mach-at32ap/pdc.c
+--- linux-2.6.25.6/arch/avr32/mach-at32ap/pdc.c 1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/arch/avr32/mach-at32ap/pdc.c 2008-06-12 15:09:38.723815860 +0200
+@@ -0,0 +1,48 @@
++/*
++ * Copyright (C) 2006 Atmel Corporation
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 as
++ * published by the Free Software Foundation.
++ */
+
-+static struct resource atmel_spi1_resource[] = {
-+ PBMEM(0xffe00400),
-+ IRQ(4),
-+};
-+DEFINE_DEV(atmel_spi, 1);
-+DEV_CLK(spi_clk, atmel_spi1, pba, 1);
++#include <linux/clk.h>
++#include <linux/err.h>
++#include <linux/init.h>
++#include <linux/platform_device.h>
+
-+static void __init
-+at32_spi_setup_slaves(unsigned int bus_num, struct spi_board_info *b,
-+ unsigned int n, const u8 *pins)
++static int __init pdc_probe(struct platform_device *pdev)
+{
-+ unsigned int pin, mode;
++ struct clk *pclk, *hclk;
+
-+ for (; n; n--, b++) {
-+ b->bus_num = bus_num;
-+ if (b->chip_select >= 4)
-+ continue;
-+ pin = (unsigned)b->controller_data;
-+ if (!pin) {
-+ pin = pins[b->chip_select];
-+ b->controller_data = (void *)pin;
-+ }
-+ mode = AT32_GPIOF_OUTPUT;
-+ if (!(b->mode & SPI_CS_HIGH))
-+ mode |= AT32_GPIOF_HIGH;
-+ at32_select_gpio(pin, mode);
-+ }
-+}
-+
-+struct platform_device *__init
-+at32_add_device_spi(unsigned int id, struct spi_board_info *b, unsigned int n)
-+{
-+ /*
-+ * Manage the chipselects as GPIOs, normally using the same pins
-+ * the SPI controller expects; but boards can use other pins.
-+ */
-+ static u8 __initdata spi0_pins[] =
-+ { GPIO_PIN_PA(3), GPIO_PIN_PA(4),
-+ GPIO_PIN_PA(5), GPIO_PIN_PA(20), };
-+ static u8 __initdata spi1_pins[] =
-+ { GPIO_PIN_PB(2), GPIO_PIN_PB(3),
-+ GPIO_PIN_PB(4), GPIO_PIN_PA(27), };
-+ struct platform_device *pdev;
-+
-+ switch (id) {
-+ case 0:
-+ pdev = &atmel_spi0_device;
-+ select_peripheral(PA(0), PERIPH_A, 0); /* MISO */
-+ select_peripheral(PA(1), PERIPH_A, 0); /* MOSI */
-+ select_peripheral(PA(2), PERIPH_A, 0); /* SCK */
-+ at32_spi_setup_slaves(0, b, n, spi0_pins);
-+ break;
-+
-+ case 1:
-+ pdev = &atmel_spi1_device;
-+ select_peripheral(PB(0), PERIPH_B, 0); /* MISO */
-+ select_peripheral(PB(1), PERIPH_B, 0); /* MOSI */
-+ select_peripheral(PB(5), PERIPH_B, 0); /* SCK */
-+ at32_spi_setup_slaves(1, b, n, spi1_pins);
-+ break;
-+
-+ default:
-+ return NULL;
++ pclk = clk_get(&pdev->dev, "pclk");
++ if (IS_ERR(pclk)) {
++ dev_err(&pdev->dev, "no pclk defined\n");
++ return PTR_ERR(pclk);
++ }
++ hclk = clk_get(&pdev->dev, "hclk");
++ if (IS_ERR(hclk)) {
++ dev_err(&pdev->dev, "no hclk defined\n");
++ clk_put(pclk);
++ return PTR_ERR(hclk);
+ }
+
-+ spi_register_board_info(b, n);
-+ platform_device_register(pdev);
-+ return pdev;
++ clk_enable(pclk);
++ clk_enable(hclk);
++
++ dev_info(&pdev->dev, "Atmel Peripheral DMA Controller enabled\n");
++ return 0;
+}
+
-+/* --------------------------------------------------------------------
-+ * TWI
-+ * -------------------------------------------------------------------- */
-+static struct resource atmel_twi0_resource[] __initdata = {
-+ PBMEM(0xffe00800),
-+ IRQ(5),
-+};
-+static struct clk atmel_twi0_pclk = {
-+ .name = "twi_pclk",
-+ .parent = &pba_clk,
-+ .mode = pba_clk_mode,
-+ .get_rate = pba_clk_get_rate,
-+ .index = 2,
++static struct platform_driver pdc_driver = {
++ .probe = pdc_probe,
++ .driver = {
++ .name = "pdc",
++ },
+};
+
-+struct platform_device *__init at32_add_device_twi(unsigned int id,
-+ struct i2c_board_info *b,
-+ unsigned int n)
++static int __init pdc_init(void)
+{
-+ struct platform_device *pdev;
-+
-+ if (id != 0)
-+ return NULL;
++ return platform_driver_register(&pdc_driver);
++}
++arch_initcall(pdc_init);
+diff --exclude=.git -urN linux-2.6.25.6/arch/avr32/mach-at32ap/pio.c avr32-2.6/arch/avr32/mach-at32ap/pio.c
+--- linux-2.6.25.6/arch/avr32/mach-at32ap/pio.c 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/avr32/mach-at32ap/pio.c 2008-06-12 15:09:38.723815860 +0200
+@@ -157,6 +157,82 @@
+ dump_stack();
+ }
+
++#ifdef CONFIG_GPIO_DEV
+
-+ pdev = platform_device_alloc("atmel_twi", id);
-+ if (!pdev)
-+ return NULL;
++/* Gang allocators and accessors; used by the GPIO /dev driver */
++int at32_gpio_port_is_valid(unsigned int port)
++{
++ return port < MAX_NR_PIO_DEVICES && pio_dev[port].regs != NULL;
++}
+
-+ if (platform_device_add_resources(pdev, atmel_twi0_resource,
-+ ARRAY_SIZE(atmel_twi0_resource)))
-+ goto err_add_resources;
++int at32_select_gpio_pins(unsigned int port, u32 pins, u32 oe_mask)
++{
++ struct pio_device *pio;
++ u32 old, new;
+
-+ select_peripheral(PA(6), PERIPH_A, 0); /* SDA */
-+ select_peripheral(PA(7), PERIPH_A, 0); /* SDL */
++ pio = &pio_dev[port];
++ BUG_ON(port > ARRAY_SIZE(pio_dev) || !pio->regs || (oe_mask & ~pins));
+
-+ atmel_twi0_pclk.dev = &pdev->dev;
++ /* Try to allocate the pins */
++ do {
++ old = pio->pinmux_mask;
++ if (old & pins)
++ return -EBUSY;
+
-+ if (b)
-+ i2c_register_board_info(id, b, n);
++ new = old | pins;
++ } while (cmpxchg(&pio->pinmux_mask, old, new) != old);
+
-+ platform_device_add(pdev);
-+ return pdev;
++ /* That went well, now configure the port */
++ pio_writel(pio, OER, oe_mask);
++ pio_writel(pio, PER, pins);
+
-+err_add_resources:
-+ platform_device_put(pdev);
-+ return NULL;
++ return 0;
+}
+
-+/* --------------------------------------------------------------------
-+ * MMC
-+ * -------------------------------------------------------------------- */
-+static struct resource atmel_mci0_resource[] __initdata = {
-+ PBMEM(0xfff02400),
-+ IRQ(28),
-+};
-+static struct clk atmel_mci0_pclk = {
-+ .name = "mci_clk",
-+ .parent = &pbb_clk,
-+ .mode = pbb_clk_mode,
-+ .get_rate = pbb_clk_get_rate,
-+ .index = 9,
-+};
-+
-+struct platform_device *__init
-+at32_add_device_mci(unsigned int id, struct mci_platform_data *data)
++void at32_deselect_pins(unsigned int port, u32 pins)
+{
-+ struct platform_device *pdev;
-+
-+ if (id != 0)
-+ return NULL;
-+
-+ pdev = platform_device_alloc("atmel_mci", id);
-+ if (!pdev)
-+ goto fail;
-+
-+ if (platform_device_add_resources(pdev, atmel_mci0_resource,
-+ ARRAY_SIZE(atmel_mci0_resource)))
-+ goto fail;
++ struct pio_device *pio;
++ u32 old, new;
+
-+ if (data && platform_device_add_data(pdev, data,
-+ sizeof(struct mci_platform_data)))
-+ goto fail;
++ pio = &pio_dev[port];
++ BUG_ON(port > ARRAY_SIZE(pio_dev) || !pio->regs);
+
-+ select_peripheral(PA(10), PERIPH_A, 0); /* CLK */
-+ select_peripheral(PA(11), PERIPH_A, 0); /* CMD */
-+ select_peripheral(PA(12), PERIPH_A, 0); /* DATA0 */
-+ select_peripheral(PA(13), PERIPH_A, 0); /* DATA1 */
-+ select_peripheral(PA(14), PERIPH_A, 0); /* DATA2 */
-+ select_peripheral(PA(15), PERIPH_A, 0); /* DATA3 */
++ /* Return to a "safe" mux configuration */
++ pio_writel(pio, PUER, pins);
++ pio_writel(pio, ODR, pins);
+
-+ if (data) {
-+ if (data->detect_pin != GPIO_PIN_NONE)
-+ at32_select_gpio(data->detect_pin, 0);
-+ if (data->wp_pin != GPIO_PIN_NONE)
-+ at32_select_gpio(data->wp_pin, 0);
-+ }
++ /* Deallocate the pins */
++ do {
++ old = pio->pinmux_mask;
++ new = old & ~pins;
++ } while (cmpxchg(&pio->pinmux_mask, old, new) != old);
++}
+
-+ atmel_mci0_pclk.dev = &pdev->dev;
++u32 at32_gpio_get_value_multiple(unsigned int port, u32 pins)
++{
++ struct pio_device *pio;
+
-+ platform_device_add(pdev);
-+ return pdev;
++ pio = &pio_dev[port];
++ BUG_ON(port > ARRAY_SIZE(pio_dev) || !pio->regs);
+
-+fail:
-+ platform_device_put(pdev);
-+ return NULL;
++ return pio_readl(pio, PDSR) & pins;
+}
+
-+/* --------------------------------------------------------------------
-+ * LCDC
-+ * -------------------------------------------------------------------- */
-+#if defined(CONFIG_CPU_AT32AP7000) || defined(CONFIG_CPU_AT32AP7002)
-+static struct atmel_lcdfb_info atmel_lcdfb0_data;
-+static struct resource atmel_lcdfb0_resource[] = {
-+ {
-+ .start = 0xff000000,
-+ .end = 0xff000fff,
-+ .flags = IORESOURCE_MEM,
-+ },
-+ IRQ(1),
-+ {
-+ /* Placeholder for pre-allocated fb memory */
-+ .start = 0x00000000,
-+ .end = 0x00000000,
-+ .flags = 0,
-+ },
-+};
-+DEFINE_DEV_DATA(atmel_lcdfb, 0);
-+DEV_CLK(hck1, atmel_lcdfb0, hsb, 7);
-+static struct clk atmel_lcdfb0_pixclk = {
-+ .name = "lcdc_clk",
-+ .dev = &atmel_lcdfb0_device.dev,
-+ .mode = genclk_mode,
-+ .get_rate = genclk_get_rate,
-+ .set_rate = genclk_set_rate,
-+ .set_parent = genclk_set_parent,
-+ .index = 7,
-+};
-+
-+struct platform_device *__init
-+at32_add_device_lcdc(unsigned int id, struct atmel_lcdfb_info *data,
-+ unsigned long fbmem_start, unsigned long fbmem_len)
++void at32_gpio_set_value_multiple(unsigned int port, u32 value, u32 mask)
+{
-+ struct platform_device *pdev;
-+ struct atmel_lcdfb_info *info;
-+ struct fb_monspecs *monspecs;
-+ struct fb_videomode *modedb;
-+ unsigned int modedb_size;
++ struct pio_device *pio;
+
-+ /*
-+ * Do a deep copy of the fb data, monspecs and modedb. Make
-+ * sure all allocations are done before setting up the
-+ * portmux.
-+ */
-+ monspecs = kmemdup(data->default_monspecs,
-+ sizeof(struct fb_monspecs), GFP_KERNEL);
-+ if (!monspecs)
-+ return NULL;
++ pio = &pio_dev[port];
++ BUG_ON(port > ARRAY_SIZE(pio_dev) || !pio->regs);
+
-+ modedb_size = sizeof(struct fb_videomode) * monspecs->modedb_len;
-+ modedb = kmemdup(monspecs->modedb, modedb_size, GFP_KERNEL);
-+ if (!modedb)
-+ goto err_dup_modedb;
-+ monspecs->modedb = modedb;
++ /* No atomic updates for now... */
++ pio_writel(pio, CODR, ~value & mask);
++ pio_writel(pio, SODR, value & mask);
++}
+
-+ switch (id) {
-+ case 0:
-+ pdev = &atmel_lcdfb0_device;
-+ select_peripheral(PC(19), PERIPH_A, 0); /* CC */
-+ select_peripheral(PC(20), PERIPH_A, 0); /* HSYNC */
-+ select_peripheral(PC(21), PERIPH_A, 0); /* PCLK */
-+ select_peripheral(PC(22), PERIPH_A, 0); /* VSYNC */
-+ select_peripheral(PC(23), PERIPH_A, 0); /* DVAL */
-+ select_peripheral(PC(24), PERIPH_A, 0); /* MODE */
-+ select_peripheral(PC(25), PERIPH_A, 0); /* PWR */
-+ select_peripheral(PC(26), PERIPH_A, 0); /* DATA0 */
-+ select_peripheral(PC(27), PERIPH_A, 0); /* DATA1 */
-+ select_peripheral(PC(28), PERIPH_A, 0); /* DATA2 */
-+ select_peripheral(PC(29), PERIPH_A, 0); /* DATA3 */
-+ select_peripheral(PC(30), PERIPH_A, 0); /* DATA4 */
-+ select_peripheral(PC(31), PERIPH_A, 0); /* DATA5 */
-+ select_peripheral(PD(0), PERIPH_A, 0); /* DATA6 */
-+ select_peripheral(PD(1), PERIPH_A, 0); /* DATA7 */
-+ select_peripheral(PD(2), PERIPH_A, 0); /* DATA8 */
-+ select_peripheral(PD(3), PERIPH_A, 0); /* DATA9 */
-+ select_peripheral(PD(4), PERIPH_A, 0); /* DATA10 */
-+ select_peripheral(PD(5), PERIPH_A, 0); /* DATA11 */
-+ select_peripheral(PD(6), PERIPH_A, 0); /* DATA12 */
-+ select_peripheral(PD(7), PERIPH_A, 0); /* DATA13 */
-+ select_peripheral(PD(8), PERIPH_A, 0); /* DATA14 */
-+ select_peripheral(PD(9), PERIPH_A, 0); /* DATA15 */
-+ select_peripheral(PD(10), PERIPH_A, 0); /* DATA16 */
-+ select_peripheral(PD(11), PERIPH_A, 0); /* DATA17 */
-+ select_peripheral(PD(12), PERIPH_A, 0); /* DATA18 */
-+ select_peripheral(PD(13), PERIPH_A, 0); /* DATA19 */
-+ select_peripheral(PD(14), PERIPH_A, 0); /* DATA20 */
-+ select_peripheral(PD(15), PERIPH_A, 0); /* DATA21 */
-+ select_peripheral(PD(16), PERIPH_A, 0); /* DATA22 */
-+ select_peripheral(PD(17), PERIPH_A, 0); /* DATA23 */
-+
-+ clk_set_parent(&atmel_lcdfb0_pixclk, &pll0);
-+ clk_set_rate(&atmel_lcdfb0_pixclk, clk_get_rate(&pll0));
-+ break;
++#endif /* CONFIG_GPIO_DEV */
+
-+ default:
-+ goto err_invalid_id;
-+ }
+
-+ if (fbmem_len) {
-+ pdev->resource[2].start = fbmem_start;
-+ pdev->resource[2].end = fbmem_start + fbmem_len - 1;
-+ pdev->resource[2].flags = IORESOURCE_MEM;
-+ }
+ /*--------------------------------------------------------------------------*/
+
+ /* GPIO API */
+@@ -318,6 +394,8 @@
+ const char *label;
+
+ label = gpiochip_is_requested(chip, i);
++ if (!label && (imr & mask))
++ label = "[irq]";
+ if (!label)
+ continue;
+
+diff --exclude=.git -urN linux-2.6.25.6/arch/avr32/mach-at32ap/pm-at32ap700x.S avr32-2.6/arch/avr32/mach-at32ap/pm-at32ap700x.S
+--- linux-2.6.25.6/arch/avr32/mach-at32ap/pm-at32ap700x.S 1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/arch/avr32/mach-at32ap/pm-at32ap700x.S 2008-06-12 15:09:38.723815860 +0200
+@@ -0,0 +1,174 @@
++/*
++ * Low-level Power Management code.
++ *
++ * Copyright (C) 2008 Atmel Corporation
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 as
++ * published by the Free Software Foundation.
++ */
++#include <asm/asm.h>
++#include <asm/asm-offsets.h>
++#include <asm/thread_info.h>
++#include <asm/arch/pm.h>
+
-+ info = pdev->dev.platform_data;
-+ memcpy(info, data, sizeof(struct atmel_lcdfb_info));
-+ info->default_monspecs = monspecs;
++#include "pm.h"
++#include "sdramc.h"
+
-+ platform_device_register(pdev);
-+ return pdev;
++/* Same as 0xfff00000 but fits in a 21 bit signed immediate */
++#define PM_BASE -0x100000
+
-+err_invalid_id:
-+ kfree(modedb);
-+err_dup_modedb:
-+ kfree(monspecs);
-+ return NULL;
-+}
-+#endif
++ .section .bss, "wa", @nobits
++ .global disable_idle_sleep
++ .type disable_idle_sleep, @object
++disable_idle_sleep:
++ .int 4
++ .size disable_idle_sleep, . - disable_idle_sleep
+
-+/* --------------------------------------------------------------------
-+ * PWM
-+ * -------------------------------------------------------------------- */
-+static struct resource atmel_pwm0_resource[] __initdata = {
-+ PBMEM(0xfff01400),
-+ IRQ(24),
-+};
-+static struct clk atmel_pwm0_mck = {
-+ .name = "mck",
-+ .parent = &pbb_clk,
-+ .mode = pbb_clk_mode,
-+ .get_rate = pbb_clk_get_rate,
-+ .index = 5,
-+};
++ /* Keep this close to the irq handlers */
++ .section .irq.text, "ax", @progbits
+
-+struct platform_device *__init at32_add_device_pwm(u32 mask)
-+{
-+ struct platform_device *pdev;
++ /*
++ * void cpu_enter_idle(void)
++ *
++ * Put the CPU into "idle" mode, in which it will consume
++ * significantly less power.
++ *
++ * If an interrupt comes along in the window between
++ * unmask_interrupts and the sleep instruction below, the
++ * interrupt code will adjust the return address so that we
++ * never execute the sleep instruction. This is required
++ * because the AP7000 doesn't unmask interrupts when entering
++ * sleep modes; later CPUs may not need this workaround.
++ */
++ .global cpu_enter_idle
++ .type cpu_enter_idle, @function
++cpu_enter_idle:
++ mask_interrupts
++ get_thread_info r8
++ ld.w r9, r8[TI_flags]
++ bld r9, TIF_NEED_RESCHED
++ brcs .Lret_from_sleep
++ sbr r9, TIF_CPU_GOING_TO_SLEEP
++ st.w r8[TI_flags], r9
++ unmask_interrupts
++ sleep CPU_SLEEP_IDLE
++ .size cpu_idle_sleep, . - cpu_idle_sleep
+
-+ if (!mask)
-+ return NULL;
++ /*
++ * Common return path for PM functions that don't run from
++ * SRAM.
++ */
++ .global cpu_idle_skip_sleep
++ .type cpu_idle_skip_sleep, @function
++cpu_idle_skip_sleep:
++ mask_interrupts
++ ld.w r9, r8[TI_flags]
++ cbr r9, TIF_CPU_GOING_TO_SLEEP
++ st.w r8[TI_flags], r9
++.Lret_from_sleep:
++ unmask_interrupts
++ retal r12
++ .size cpu_idle_skip_sleep, . - cpu_idle_skip_sleep
+
-+ pdev = platform_device_alloc("atmel_pwm", 0);
-+ if (!pdev)
-+ return NULL;
++#ifdef CONFIG_PM
++ .section .init.text, "ax", @progbits
+
-+ if (platform_device_add_resources(pdev, atmel_pwm0_resource,
-+ ARRAY_SIZE(atmel_pwm0_resource)))
-+ goto out_free_pdev;
++ .global pm_exception
++ .type pm_exception, @function
++pm_exception:
++ /*
++ * Exceptions are masked when we switch to this handler, so
++ * we'll only get "unrecoverable" exceptions (offset 0.)
++ */
++ sub r12, pc, . - .Lpanic_msg
++ lddpc pc, .Lpanic_addr
++
++ .align 2
++.Lpanic_addr:
++ .long panic
++.Lpanic_msg:
++ .asciz "Unrecoverable exception during suspend\n"
++ .size pm_exception, . - pm_exception
++
++ .global pm_irq0
++ .type pm_irq0, @function
++pm_irq0:
++ /* Disable interrupts and return after the sleep instruction */
++ mfsr r9, SYSREG_RSR_INT0
++ mtsr SYSREG_RAR_INT0, r8
++ sbr r9, SYSREG_GM_OFFSET
++ mtsr SYSREG_RSR_INT0, r9
++ rete
+
-+ if (platform_device_add_data(pdev, &mask, sizeof(mask)))
-+ goto out_free_pdev;
++ /*
++ * void cpu_enter_standby(unsigned long sdramc_base)
++ *
++ * Enter PM_SUSPEND_STANDBY mode. At this point, all drivers
++ * are suspended and interrupts are disabled. Interrupts
++ * marked as 'wakeup' event sources may still come along and
++ * get us out of here.
++ *
++ * The SDRAM will be put into self-refresh mode (which does
++ * not require a clock from the CPU), and the CPU will be put
++ * into "frozen" mode (HSB bus stopped). The SDRAM controller
++ * will automatically bring the SDRAM into normal mode on the
++ * first access, and the power manager will automatically
++ * start the HSB and CPU clocks upon a wakeup event.
++ *
++ * This code uses the same "skip sleep" technique as above.
++ * It is very important that we jump directly to
++ * cpu_after_sleep after the sleep instruction since that's
++ * where we'll end up if the interrupt handler decides that we
++ * need to skip the sleep instruction.
++ */
++ .global pm_standby
++ .type pm_standby, @function
++pm_standby:
++ /*
++ * interrupts are already masked at this point, and EVBA
++ * points to pm_exception above.
++ */
++ ld.w r10, r12[SDRAMC_LPR]
++ sub r8, pc, . - 1f /* return address for irq handler */
++ mov r11, SDRAMC_LPR_LPCB_SELF_RFR
++ bfins r10, r11, 0, 2 /* LPCB <- self Refresh */
++ sync 0 /* flush write buffer */
++ st.w r12[SDRAMC_LPR], r11 /* put SDRAM in self-refresh mode */
++ ld.w r11, r12[SDRAMC_LPR]
++ unmask_interrupts
++ sleep CPU_SLEEP_FROZEN
++1: mask_interrupts
++ retal r12
++ .size pm_standby, . - pm_standby
+
-+ if (mask & (1 << 0))
-+ select_peripheral(PA(28), PERIPH_A, 0);
-+ if (mask & (1 << 1))
-+ select_peripheral(PA(29), PERIPH_A, 0);
-+ if (mask & (1 << 2))
-+ select_peripheral(PA(21), PERIPH_B, 0);
-+ if (mask & (1 << 3))
-+ select_peripheral(PA(22), PERIPH_B, 0);
++ .global pm_suspend_to_ram
++ .type pm_suspend_to_ram, @function
++pm_suspend_to_ram:
++ /*
++ * interrupts are already masked at this point, and EVBA
++ * points to pm_exception above.
++ */
++ mov r11, 0
++ cache r11[2], 8 /* clean all dcache lines */
++ sync 0 /* flush write buffer */
++ ld.w r10, r12[SDRAMC_LPR]
++ sub r8, pc, . - 1f /* return address for irq handler */
++ mov r11, SDRAMC_LPR_LPCB_SELF_RFR
++ bfins r10, r11, 0, 2 /* LPCB <- self refresh */
++ st.w r12[SDRAMC_LPR], r10 /* put SDRAM in self-refresh mode */
++ ld.w r11, r12[SDRAMC_LPR]
+
-+ atmel_pwm0_mck.dev = &pdev->dev;
++ unmask_interrupts
++ sleep CPU_SLEEP_STOP
++1: mask_interrupts
+
-+ platform_device_add(pdev);
-+
-+ return pdev;
-+
-+out_free_pdev:
-+ platform_device_put(pdev);
-+ return NULL;
-+}
++ retal r12
++ .size pm_suspend_to_ram, . - pm_suspend_to_ram
++
++ .global pm_sram_end
++ .type pm_sram_end, @function
++pm_sram_end:
++ .size pm_sram_end, 0
++
++#endif /* CONFIG_PM */
+diff --exclude=.git -urN linux-2.6.25.6/arch/avr32/mach-at32ap/pm.c avr32-2.6/arch/avr32/mach-at32ap/pm.c
+--- linux-2.6.25.6/arch/avr32/mach-at32ap/pm.c 1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/arch/avr32/mach-at32ap/pm.c 2008-06-12 15:09:38.723815860 +0200
+@@ -0,0 +1,245 @@
++/*
++ * AVR32 AP Power Management
++ *
++ * Copyright (C) 2008 Atmel Corporation
++ *
++ * This program is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU General Public License
++ * version 2 as published by the Free Software Foundation.
++ */
++#include <linux/io.h>
++#include <linux/suspend.h>
++#include <linux/vmalloc.h>
+
-+/* --------------------------------------------------------------------
-+ * SSC
-+ * -------------------------------------------------------------------- */
-+static struct resource ssc0_resource[] = {
-+ PBMEM(0xffe01c00),
-+ IRQ(10),
-+};
-+DEFINE_DEV(ssc, 0);
-+DEV_CLK(pclk, ssc0, pba, 7);
++#include <asm/cacheflush.h>
++#include <asm/sysreg.h>
+
-+static struct resource ssc1_resource[] = {
-+ PBMEM(0xffe02000),
-+ IRQ(11),
-+};
-+DEFINE_DEV(ssc, 1);
-+DEV_CLK(pclk, ssc1, pba, 8);
++#include <asm/arch/pm.h>
++#include <asm/arch/sram.h>
+
-+static struct resource ssc2_resource[] = {
-+ PBMEM(0xffe02400),
-+ IRQ(12),
-+};
-+DEFINE_DEV(ssc, 2);
-+DEV_CLK(pclk, ssc2, pba, 9);
++/* FIXME: This is only valid for AP7000 */
++#define SDRAMC_BASE 0xfff03800
+
-+struct platform_device *__init
-+at32_add_device_ssc(unsigned int id, unsigned int flags)
-+{
-+ struct platform_device *pdev;
++#include "sdramc.h"
+
-+ switch (id) {
-+ case 0:
-+ pdev = &ssc0_device;
-+ if (flags & ATMEL_SSC_RF)
-+ select_peripheral(PA(21), PERIPH_A, 0); /* RF */
-+ if (flags & ATMEL_SSC_RK)
-+ select_peripheral(PA(22), PERIPH_A, 0); /* RK */
-+ if (flags & ATMEL_SSC_TK)
-+ select_peripheral(PA(23), PERIPH_A, 0); /* TK */
-+ if (flags & ATMEL_SSC_TF)
-+ select_peripheral(PA(24), PERIPH_A, 0); /* TF */
-+ if (flags & ATMEL_SSC_TD)
-+ select_peripheral(PA(25), PERIPH_A, 0); /* TD */
-+ if (flags & ATMEL_SSC_RD)
-+ select_peripheral(PA(26), PERIPH_A, 0); /* RD */
-+ break;
-+ case 1:
-+ pdev = &ssc1_device;
-+ if (flags & ATMEL_SSC_RF)
-+ select_peripheral(PA(0), PERIPH_B, 0); /* RF */
-+ if (flags & ATMEL_SSC_RK)
-+ select_peripheral(PA(1), PERIPH_B, 0); /* RK */
-+ if (flags & ATMEL_SSC_TK)
-+ select_peripheral(PA(2), PERIPH_B, 0); /* TK */
-+ if (flags & ATMEL_SSC_TF)
-+ select_peripheral(PA(3), PERIPH_B, 0); /* TF */
-+ if (flags & ATMEL_SSC_TD)
-+ select_peripheral(PA(4), PERIPH_B, 0); /* TD */
-+ if (flags & ATMEL_SSC_RD)
-+ select_peripheral(PA(5), PERIPH_B, 0); /* RD */
-+ break;
-+ case 2:
-+ pdev = &ssc2_device;
-+ if (flags & ATMEL_SSC_TD)
-+ select_peripheral(PB(13), PERIPH_A, 0); /* TD */
-+ if (flags & ATMEL_SSC_RD)
-+ select_peripheral(PB(14), PERIPH_A, 0); /* RD */
-+ if (flags & ATMEL_SSC_TK)
-+ select_peripheral(PB(15), PERIPH_A, 0); /* TK */
-+ if (flags & ATMEL_SSC_TF)
-+ select_peripheral(PB(16), PERIPH_A, 0); /* TF */
-+ if (flags & ATMEL_SSC_RF)
-+ select_peripheral(PB(17), PERIPH_A, 0); /* RF */
-+ if (flags & ATMEL_SSC_RK)
-+ select_peripheral(PB(18), PERIPH_A, 0); /* RK */
-+ break;
-+ default:
-+ return NULL;
-+ }
++#define SRAM_PAGE_FLAGS (SYSREG_BIT(TLBELO_D) | SYSREG_BF(SZ, 1) \
++ | SYSREG_BF(AP, 3) | SYSREG_BIT(G))
+
-+ platform_device_register(pdev);
-+ return pdev;
-+}
+
-+/* --------------------------------------------------------------------
-+ * USB Device Controller
-+ * -------------------------------------------------------------------- */
-+static struct resource usba0_resource[] __initdata = {
-+ {
-+ .start = 0xff300000,
-+ .end = 0xff3fffff,
-+ .flags = IORESOURCE_MEM,
-+ }, {
-+ .start = 0xfff03000,
-+ .end = 0xfff033ff,
-+ .flags = IORESOURCE_MEM,
-+ },
-+ IRQ(31),
-+};
-+static struct clk usba0_pclk = {
-+ .name = "pclk",
-+ .parent = &pbb_clk,
-+ .mode = pbb_clk_mode,
-+ .get_rate = pbb_clk_get_rate,
-+ .index = 12,
-+};
-+static struct clk usba0_hclk = {
-+ .name = "hclk",
-+ .parent = &hsb_clk,
-+ .mode = hsb_clk_mode,
-+ .get_rate = hsb_clk_get_rate,
-+ .index = 6,
-+};
++static unsigned long pm_sram_start;
++static size_t pm_sram_size;
++static struct vm_struct *pm_sram_area;
+
-+#define EP(nam, idx, maxpkt, maxbk, dma, isoc) \
-+ [idx] = { \
-+ .name = nam, \
-+ .index = idx, \
-+ .fifo_size = maxpkt, \
-+ .nr_banks = maxbk, \
-+ .can_dma = dma, \
-+ .can_isoc = isoc, \
-+ }
++static void (*avr32_pm_enter_standby)(unsigned long sdramc_base);
++static void (*avr32_pm_enter_str)(unsigned long sdramc_base);
+
-+static struct usba_ep_data at32_usba_ep[] __initdata = {
-+ EP("ep0", 0, 64, 1, 0, 0),
-+ EP("ep1", 1, 512, 2, 1, 1),
-+ EP("ep2", 2, 512, 2, 1, 1),
-+ EP("ep3-int", 3, 64, 3, 1, 0),
-+ EP("ep4-int", 4, 64, 3, 1, 0),
-+ EP("ep5", 5, 1024, 3, 1, 1),
-+ EP("ep6", 6, 1024, 3, 1, 1),
-+};
++/*
++ * Must be called with interrupts disabled. Exceptions will be masked
++ * on return (i.e. all exceptions will be "unrecoverable".)
++ */
++static void *avr32_pm_map_sram(void)
++{
++ unsigned long vaddr;
++ unsigned long page_addr;
++ u32 tlbehi;
++ u32 mmucr;
+
-+#undef EP
++ vaddr = (unsigned long)pm_sram_area->addr;
++ page_addr = pm_sram_start & PAGE_MASK;
+
-+struct platform_device *__init
-+at32_add_device_usba(unsigned int id, struct usba_platform_data *data)
-+{
+ /*
-+ * pdata doesn't have room for any endpoints, so we need to
-+ * append room for the ones we need right after it.
++ * Mask exceptions and grab the first TLB entry. We won't be
++ * needing it while sleeping.
+ */
-+ struct {
-+ struct usba_platform_data pdata;
-+ struct usba_ep_data ep[7];
-+ } usba_data;
-+ struct platform_device *pdev;
-+
-+ if (id != 0)
-+ return NULL;
-+
-+ pdev = platform_device_alloc("atmel_usba_udc", 0);
-+ if (!pdev)
-+ return NULL;
-+
-+ if (platform_device_add_resources(pdev, usba0_resource,
-+ ARRAY_SIZE(usba0_resource)))
-+ goto out_free_pdev;
-+
-+ if (data)
-+ usba_data.pdata.vbus_pin = data->vbus_pin;
-+ else
-+ usba_data.pdata.vbus_pin = -EINVAL;
-+
-+ data = &usba_data.pdata;
-+ data->num_ep = ARRAY_SIZE(at32_usba_ep);
-+ memcpy(data->ep, at32_usba_ep, sizeof(at32_usba_ep));
-+
-+ if (platform_device_add_data(pdev, data, sizeof(usba_data)))
-+ goto out_free_pdev;
-+
-+ if (data->vbus_pin >= 0)
-+ at32_select_gpio(data->vbus_pin, 0);
++ asm volatile("ssrf %0" : : "i"(SYSREG_EM_OFFSET) : "memory");
+
-+ usba0_pclk.dev = &pdev->dev;
-+ usba0_hclk.dev = &pdev->dev;
++ mmucr = sysreg_read(MMUCR);
++ tlbehi = sysreg_read(TLBEHI);
++ sysreg_write(MMUCR, SYSREG_BFINS(DRP, 0, mmucr));
+
-+ platform_device_add(pdev);
++ tlbehi = SYSREG_BF(ASID, SYSREG_BFEXT(ASID, tlbehi));
++ tlbehi |= vaddr & PAGE_MASK;
++ tlbehi |= SYSREG_BIT(TLBEHI_V);
+
-+ return pdev;
++ sysreg_write(TLBELO, page_addr | SRAM_PAGE_FLAGS);
++ sysreg_write(TLBEHI, tlbehi);
++ __builtin_tlbw();
+
-+out_free_pdev:
-+ platform_device_put(pdev);
-+ return NULL;
++ return (void *)(vaddr + pm_sram_start - page_addr);
+}
+
-+/* --------------------------------------------------------------------
-+ * IDE / CompactFlash
-+ * -------------------------------------------------------------------- */
-+#if defined(CONFIG_CPU_AT32AP7000) || defined(CONFIG_CPU_AT32AP7001)
-+static struct resource at32_smc_cs4_resource[] __initdata = {
-+ {
-+ .start = 0x04000000,
-+ .end = 0x07ffffff,
-+ .flags = IORESOURCE_MEM,
-+ },
-+ IRQ(~0UL), /* Magic IRQ will be overridden */
-+};
-+static struct resource at32_smc_cs5_resource[] __initdata = {
-+ {
-+ .start = 0x20000000,
-+ .end = 0x23ffffff,
-+ .flags = IORESOURCE_MEM,
-+ },
-+ IRQ(~0UL), /* Magic IRQ will be overridden */
-+};
-+
-+static int __init at32_init_ide_or_cf(struct platform_device *pdev,
-+ unsigned int cs, unsigned int extint)
++/*
++ * Must be called with interrupts disabled. Exceptions will be
++ * unmasked on return.
++ */
++static void avr32_pm_unmap_sram(void)
+{
-+ static unsigned int extint_pin_map[4] __initdata = {
-+ GPIO_PIN_PB(25),
-+ GPIO_PIN_PB(26),
-+ GPIO_PIN_PB(27),
-+ GPIO_PIN_PB(28),
-+ };
-+ static bool common_pins_initialized __initdata = false;
-+ unsigned int extint_pin;
-+ int ret;
-+
-+ if (extint >= ARRAY_SIZE(extint_pin_map))
-+ return -EINVAL;
-+ extint_pin = extint_pin_map[extint];
-+
-+ switch (cs) {
-+ case 4:
-+ ret = platform_device_add_resources(pdev,
-+ at32_smc_cs4_resource,
-+ ARRAY_SIZE(at32_smc_cs4_resource));
-+ if (ret)
-+ return ret;
-+
-+ select_peripheral(PE(21), PERIPH_A, 0); /* NCS4 -> OE_N */
-+ set_ebi_sfr_bits(HMATRIX_BIT(CS4A));
-+ break;
-+ case 5:
-+ ret = platform_device_add_resources(pdev,
-+ at32_smc_cs5_resource,
-+ ARRAY_SIZE(at32_smc_cs5_resource));
-+ if (ret)
-+ return ret;
++ u32 mmucr;
++ u32 tlbehi;
++ u32 tlbarlo;
+
-+ select_peripheral(PE(22), PERIPH_A, 0); /* NCS5 -> OE_N */
-+ set_ebi_sfr_bits(HMATRIX_BIT(CS5A));
-+ break;
-+ default:
-+ return -EINVAL;
-+ }
++ /* Going to update TLB entry at index 0 */
++ mmucr = sysreg_read(MMUCR);
++ tlbehi = sysreg_read(TLBEHI);
++ sysreg_write(MMUCR, SYSREG_BFINS(DRP, 0, mmucr));
+
-+ if (!common_pins_initialized) {
-+ select_peripheral(PE(19), PERIPH_A, 0); /* CFCE1 -> CS0_N */
-+ select_peripheral(PE(20), PERIPH_A, 0); /* CFCE2 -> CS1_N */
-+ select_peripheral(PE(23), PERIPH_A, 0); /* CFRNW -> DIR */
-+ select_peripheral(PE(24), PERIPH_A, 0); /* NWAIT <- IORDY */
-+ common_pins_initialized = true;
-+ }
++ /* Clear the "valid" bit */
++ tlbehi = SYSREG_BF(ASID, SYSREG_BFEXT(ASID, tlbehi));
++ sysreg_write(TLBEHI, tlbehi);
+
-+ at32_select_periph(extint_pin, GPIO_PERIPH_A, AT32_GPIOF_DEGLITCH);
++ /* Mark it as "not accessed" */
++ tlbarlo = sysreg_read(TLBARLO);
++ sysreg_write(TLBARLO, tlbarlo | 0x80000000U);
+
-+ pdev->resource[1].start = EIM_IRQ_BASE + extint;
-+ pdev->resource[1].end = pdev->resource[1].start;
++ /* Update the TLB */
++ __builtin_tlbw();
+
-+ return 0;
++ /* Unmask exceptions */
++ asm volatile("csrf %0" : : "i"(SYSREG_EM_OFFSET) : "memory");
+}
+
-+struct platform_device *__init
-+at32_add_device_ide(unsigned int id, unsigned int extint,
-+ struct ide_platform_data *data)
++static int avr32_pm_valid_state(suspend_state_t state)
+{
-+ struct platform_device *pdev;
-+
-+ pdev = platform_device_alloc("at32_ide", id);
-+ if (!pdev)
-+ goto fail;
-+
-+ if (platform_device_add_data(pdev, data,
-+ sizeof(struct ide_platform_data)))
-+ goto fail;
-+
-+ if (at32_init_ide_or_cf(pdev, data->cs, extint))
-+ goto fail;
-+
-+ platform_device_add(pdev);
-+ return pdev;
++ switch (state) {
++ case PM_SUSPEND_ON:
++ case PM_SUSPEND_STANDBY:
++ case PM_SUSPEND_MEM:
++ return 1;
+
-+fail:
-+ platform_device_put(pdev);
-+ return NULL;
++ default:
++ return 0;
++ }
+}
+
-+struct platform_device *__init
-+at32_add_device_cf(unsigned int id, unsigned int extint,
-+ struct cf_platform_data *data)
++static int avr32_pm_enter(suspend_state_t state)
+{
-+ struct platform_device *pdev;
++ u32 lpr_saved;
++ u32 evba_saved;
++ void *sram;
+
-+ pdev = platform_device_alloc("at32_cf", id);
-+ if (!pdev)
-+ goto fail;
-+
-+ if (platform_device_add_data(pdev, data,
-+ sizeof(struct cf_platform_data)))
-+ goto fail;
++ switch (state) {
++ case PM_SUSPEND_STANDBY:
++ sram = avr32_pm_map_sram();
+
-+ if (at32_init_ide_or_cf(pdev, data->cs, extint))
-+ goto fail;
++ /* Switch to in-sram exception handlers */
++ evba_saved = sysreg_read(EVBA);
++ sysreg_write(EVBA, (unsigned long)sram);
+
-+ if (data->detect_pin != GPIO_PIN_NONE)
-+ at32_select_gpio(data->detect_pin, AT32_GPIOF_DEGLITCH);
-+ if (data->reset_pin != GPIO_PIN_NONE)
-+ at32_select_gpio(data->reset_pin, 0);
-+ if (data->vcc_pin != GPIO_PIN_NONE)
-+ at32_select_gpio(data->vcc_pin, 0);
-+ /* READY is used as extint, so we can't select it as gpio */
++ /*
++ * Save the LPR register so that we can re-enable
++ * SDRAM Low Power mode on resume.
++ */
++ lpr_saved = sdramc_readl(LPR);
++ pr_debug("%s: Entering standby...\n", __func__);
++ avr32_pm_enter_standby(SDRAMC_BASE);
++ sdramc_writel(LPR, lpr_saved);
+
-+ platform_device_add(pdev);
-+ return pdev;
++ /* Switch back to regular exception handlers */
++ sysreg_write(EVBA, evba_saved);
+
-+fail:
-+ platform_device_put(pdev);
-+ return NULL;
-+}
-+#endif
++ avr32_pm_unmap_sram();
++ break;
+
-+/* --------------------------------------------------------------------
-+ * AC97C
-+ * -------------------------------------------------------------------- */
-+static struct resource atmel_ac97c0_resource[] __initdata = {
-+ PBMEM(0xfff02800),
-+ IRQ(29),
-+};
-+static struct clk atmel_ac97c0_pclk = {
-+ .name = "pclk",
-+ .parent = &pbb_clk,
-+ .mode = pbb_clk_mode,
-+ .get_rate = pbb_clk_get_rate,
-+ .index = 10,
-+};
++ case PM_SUSPEND_MEM:
++ sram = avr32_pm_map_sram();
+
-+struct platform_device *__init at32_add_device_ac97c(unsigned int id)
-+{
-+ struct platform_device *pdev;
++ /* Switch to in-sram exception handlers */
++ evba_saved = sysreg_read(EVBA);
++ sysreg_write(EVBA, (unsigned long)sram);
+
-+ if (id != 0)
-+ return NULL;
++ /*
++ * Save the LPR register so that we can re-enable
++ * SDRAM Low Power mode on resume.
++ */
++ lpr_saved = sdramc_readl(LPR);
++ pr_debug("%s: Entering suspend-to-ram...\n", __func__);
++ avr32_pm_enter_str(SDRAMC_BASE);
++ sdramc_writel(LPR, lpr_saved);
+
-+ pdev = platform_device_alloc("atmel_ac97c", id);
-+ if (!pdev)
-+ return NULL;
++ /* Switch back to regular exception handlers */
++ sysreg_write(EVBA, evba_saved);
+
-+ if (platform_device_add_resources(pdev, atmel_ac97c0_resource,
-+ ARRAY_SIZE(atmel_ac97c0_resource)))
-+ goto err_add_resources;
++ avr32_pm_unmap_sram();
++ break;
+
-+ select_peripheral(PB(20), PERIPH_B, 0); /* SYNC */
-+ select_peripheral(PB(21), PERIPH_B, 0); /* SDO */
-+ select_peripheral(PB(22), PERIPH_B, 0); /* SDI */
-+ select_peripheral(PB(23), PERIPH_B, 0); /* SCLK */
++ case PM_SUSPEND_ON:
++ pr_debug("%s: Entering idle...\n", __func__);
++ cpu_enter_idle();
++ break;
+
-+ atmel_ac97c0_pclk.dev = &pdev->dev;
++ default:
++ pr_debug("%s: Invalid suspend state %d\n", __func__, state);
++ goto out;
++ }
+
-+ platform_device_add(pdev);
-+ return pdev;
++ pr_debug("%s: wakeup\n", __func__);
+
-+err_add_resources:
-+ platform_device_put(pdev);
-+ return NULL;
++out:
++ return 0;
+}
+
-+/* --------------------------------------------------------------------
-+ * ABDAC
-+ * -------------------------------------------------------------------- */
-+static struct resource abdac0_resource[] __initdata = {
-+ PBMEM(0xfff02000),
-+ IRQ(27),
-+};
-+static struct clk abdac0_pclk = {
-+ .name = "pclk",
-+ .parent = &pbb_clk,
-+ .mode = pbb_clk_mode,
-+ .get_rate = pbb_clk_get_rate,
-+ .index = 8,
-+};
-+static struct clk abdac0_sample_clk = {
-+ .name = "sample_clk",
-+ .mode = genclk_mode,
-+ .get_rate = genclk_get_rate,
-+ .set_rate = genclk_set_rate,
-+ .set_parent = genclk_set_parent,
-+ .index = 6,
++static struct platform_suspend_ops avr32_pm_ops = {
++ .valid = avr32_pm_valid_state,
++ .enter = avr32_pm_enter,
+};
+
-+struct platform_device *__init at32_add_device_abdac(unsigned int id)
++static unsigned long avr32_pm_offset(void *symbol)
+{
-+ struct platform_device *pdev;
++ extern u8 pm_exception[];
+
-+ if (id != 0)
-+ return NULL;
++ return (unsigned long)symbol - (unsigned long)pm_exception;
++}
+
-+ pdev = platform_device_alloc("abdac", id);
-+ if (!pdev)
-+ return NULL;
++static int __init avr32_pm_init(void)
++{
++ extern u8 pm_exception[];
++ extern u8 pm_irq0[];
++ extern u8 pm_standby[];
++ extern u8 pm_suspend_to_ram[];
++ extern u8 pm_sram_end[];
++ void *dst;
+
-+ if (platform_device_add_resources(pdev, abdac0_resource,
-+ ARRAY_SIZE(abdac0_resource)))
-+ goto err_add_resources;
++ /*
++ * To keep things simple, we depend on not needing more than a
++ * single page.
++ */
++ pm_sram_size = avr32_pm_offset(pm_sram_end);
++ if (pm_sram_size > PAGE_SIZE)
++ goto err;
+
-+ select_peripheral(PB(20), PERIPH_A, 0); /* DATA1 */
-+ select_peripheral(PB(21), PERIPH_A, 0); /* DATA0 */
-+ select_peripheral(PB(22), PERIPH_A, 0); /* DATAN1 */
-+ select_peripheral(PB(23), PERIPH_A, 0); /* DATAN0 */
++ pm_sram_start = sram_alloc(pm_sram_size);
++ if (!pm_sram_start)
++ goto err_alloc_sram;
+
-+ abdac0_pclk.dev = &pdev->dev;
-+ abdac0_sample_clk.dev = &pdev->dev;
++ /* Grab a virtual area we can use later on. */
++ pm_sram_area = get_vm_area(pm_sram_size, VM_IOREMAP);
++ if (!pm_sram_area)
++ goto err_vm_area;
++ pm_sram_area->phys_addr = pm_sram_start;
+
-+ platform_device_add(pdev);
-+ return pdev;
++ local_irq_disable();
++ dst = avr32_pm_map_sram();
++ memcpy(dst, pm_exception, pm_sram_size);
++ flush_dcache_region(dst, pm_sram_size);
++ invalidate_icache_region(dst, pm_sram_size);
++ avr32_pm_unmap_sram();
++ local_irq_enable();
+
-+err_add_resources:
-+ platform_device_put(pdev);
-+ return NULL;
-+}
++ avr32_pm_enter_standby = dst + avr32_pm_offset(pm_standby);
++ avr32_pm_enter_str = dst + avr32_pm_offset(pm_suspend_to_ram);
++ intc_set_suspend_handler(avr32_pm_offset(pm_irq0));
+
-+/* --------------------------------------------------------------------
-+ * GCLK
-+ * -------------------------------------------------------------------- */
-+static struct clk gclk0 = {
-+ .name = "gclk0",
-+ .mode = genclk_mode,
-+ .get_rate = genclk_get_rate,
-+ .set_rate = genclk_set_rate,
-+ .set_parent = genclk_set_parent,
-+ .index = 0,
-+};
-+static struct clk gclk1 = {
-+ .name = "gclk1",
-+ .mode = genclk_mode,
-+ .get_rate = genclk_get_rate,
-+ .set_rate = genclk_set_rate,
-+ .set_parent = genclk_set_parent,
-+ .index = 1,
-+};
-+static struct clk gclk2 = {
-+ .name = "gclk2",
-+ .mode = genclk_mode,
-+ .get_rate = genclk_get_rate,
-+ .set_rate = genclk_set_rate,
-+ .set_parent = genclk_set_parent,
-+ .index = 2,
-+};
-+static struct clk gclk3 = {
-+ .name = "gclk3",
-+ .mode = genclk_mode,
-+ .get_rate = genclk_get_rate,
-+ .set_rate = genclk_set_rate,
-+ .set_parent = genclk_set_parent,
-+ .index = 3,
-+};
-+static struct clk gclk4 = {
-+ .name = "gclk4",
-+ .mode = genclk_mode,
-+ .get_rate = genclk_get_rate,
-+ .set_rate = genclk_set_rate,
-+ .set_parent = genclk_set_parent,
-+ .index = 4,
-+};
++ suspend_set_ops(&avr32_pm_ops);
+
-+struct clk *at32_clock_list[] = {
-+ &osc32k,
-+ &osc0,
-+ &osc1,
-+ &pll0,
-+ &pll1,
-+ &cpu_clk,
-+ &hsb_clk,
-+ &pba_clk,
-+ &pbb_clk,
-+ &at32_pm_pclk,
-+ &at32_intc0_pclk,
-+ &hmatrix_clk,
-+ &ebi_clk,
-+ &hramc_clk,
-+ &smc0_pclk,
-+ &smc0_mck,
-+ &pdc_hclk,
-+ &pdc_pclk,
-+ &dmaca0_hclk,
-+ &pico_clk,
-+ &pio0_mck,
-+ &pio1_mck,
-+ &pio2_mck,
-+ &pio3_mck,
-+ &pio4_mck,
-+ &at32_tcb0_t0_clk,
-+ &at32_tcb1_t0_clk,
-+ &atmel_psif0_pclk,
-+ &atmel_psif1_pclk,
-+ &atmel_usart0_usart,
-+ &atmel_usart1_usart,
-+ &atmel_usart2_usart,
-+ &atmel_usart3_usart,
-+ &atmel_pwm0_mck,
-+#if defined(CONFIG_CPU_AT32AP7000)
-+ &macb0_hclk,
-+ &macb0_pclk,
-+ &macb1_hclk,
-+ &macb1_pclk,
-+#endif
-+ &atmel_spi0_spi_clk,
-+ &atmel_spi1_spi_clk,
-+ &atmel_twi0_pclk,
-+ &atmel_mci0_pclk,
-+#if defined(CONFIG_CPU_AT32AP7000) || defined(CONFIG_CPU_AT32AP7002)
-+ &atmel_lcdfb0_hck1,
-+ &atmel_lcdfb0_pixclk,
-+#endif
-+ &ssc0_pclk,
-+ &ssc1_pclk,
-+ &ssc2_pclk,
-+ &usba0_hclk,
-+ &usba0_pclk,
-+ &atmel_ac97c0_pclk,
-+ &abdac0_pclk,
-+ &abdac0_sample_clk,
-+ &gclk0,
-+ &gclk1,
-+ &gclk2,
-+ &gclk3,
-+ &gclk4,
-+};
-+unsigned int at32_nr_clocks = ARRAY_SIZE(at32_clock_list);
++ printk("AVR32 AP Power Management enabled\n");
+
-+void __init at32_portmux_init(void)
-+{
-+ at32_init_pio(&pio0_device);
-+ at32_init_pio(&pio1_device);
-+ at32_init_pio(&pio2_device);
-+ at32_init_pio(&pio3_device);
-+ at32_init_pio(&pio4_device);
-+}
++ return 0;
+
-+void __init at32_clock_init(void)
-+{
-+ u32 cpu_mask = 0, hsb_mask = 0, pba_mask = 0, pbb_mask = 0;
-+ int i;
++err_vm_area:
++ sram_free(pm_sram_start, pm_sram_size);
++err_alloc_sram:
++err:
++ pr_err("AVR32 Power Management initialization failed\n");
++ return -ENOMEM;
++}
++arch_initcall(avr32_pm_init);
+diff --exclude=.git -urN linux-2.6.25.6/arch/avr32/mach-at32ap/sdramc.h avr32-2.6/arch/avr32/mach-at32ap/sdramc.h
+--- linux-2.6.25.6/arch/avr32/mach-at32ap/sdramc.h 1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/arch/avr32/mach-at32ap/sdramc.h 2008-06-12 15:09:38.723815860 +0200
+@@ -0,0 +1,76 @@
++/*
++ * Register definitions for the AT32AP SDRAM Controller
++ *
++ * Copyright (C) 2008 Atmel Corporation
++ *
++ * This program is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU General Public License
++ * version 2 as published by the Free Software Foundation.
++ */
+
-+ if (pm_readl(MCCTRL) & PM_BIT(PLLSEL)) {
-+ main_clock = &pll0;
-+ cpu_clk.parent = &pll0;
-+ } else {
-+ main_clock = &osc0;
-+ cpu_clk.parent = &osc0;
-+ }
-+
-+ if (pm_readl(PLL0) & PM_BIT(PLLOSC))
-+ pll0.parent = &osc1;
-+ if (pm_readl(PLL1) & PM_BIT(PLLOSC))
-+ pll1.parent = &osc1;
-+
-+ genclk_init_parent(&gclk0);
-+ genclk_init_parent(&gclk1);
-+ genclk_init_parent(&gclk2);
-+ genclk_init_parent(&gclk3);
-+ genclk_init_parent(&gclk4);
-+#if defined(CONFIG_CPU_AT32AP7000) || defined(CONFIG_CPU_AT32AP7002)
-+ genclk_init_parent(&atmel_lcdfb0_pixclk);
-+#endif
-+ genclk_init_parent(&abdac0_sample_clk);
++/* Register offsets */
++#define SDRAMC_MR 0x0000
++#define SDRAMC_TR 0x0004
++#define SDRAMC_CR 0x0008
++#define SDRAMC_HSR 0x000c
++#define SDRAMC_LPR 0x0010
++#define SDRAMC_IER 0x0014
++#define SDRAMC_IDR 0x0018
++#define SDRAMC_IMR 0x001c
++#define SDRAMC_ISR 0x0020
++#define SDRAMC_MDR 0x0024
++
++/* MR - Mode Register */
++#define SDRAMC_MR_MODE_NORMAL ( 0 << 0)
++#define SDRAMC_MR_MODE_NOP ( 1 << 0)
++#define SDRAMC_MR_MODE_BANKS_PRECHARGE ( 2 << 0)
++#define SDRAMC_MR_MODE_LOAD_MODE ( 3 << 0)
++#define SDRAMC_MR_MODE_AUTO_REFRESH ( 4 << 0)
++#define SDRAMC_MR_MODE_EXT_LOAD_MODE ( 5 << 0)
++#define SDRAMC_MR_MODE_POWER_DOWN ( 6 << 0)
++
++/* CR - Configuration Register */
++#define SDRAMC_CR_NC_8_BITS ( 0 << 0)
++#define SDRAMC_CR_NC_9_BITS ( 1 << 0)
++#define SDRAMC_CR_NC_10_BITS ( 2 << 0)
++#define SDRAMC_CR_NC_11_BITS ( 3 << 0)
++#define SDRAMC_CR_NR_11_BITS ( 0 << 2)
++#define SDRAMC_CR_NR_12_BITS ( 1 << 2)
++#define SDRAMC_CR_NR_13_BITS ( 2 << 2)
++#define SDRAMC_CR_NB_2_BANKS ( 0 << 4)
++#define SDRAMC_CR_NB_4_BANKS ( 1 << 4)
++#define SDRAMC_CR_CAS(x) ((x) << 5)
++#define SDRAMC_CR_DBW_32_BITS ( 0 << 7)
++#define SDRAMC_CR_DBW_16_BITS ( 1 << 7)
++#define SDRAMC_CR_TWR(x) ((x) << 8)
++#define SDRAMC_CR_TRC(x) ((x) << 12)
++#define SDRAMC_CR_TRP(x) ((x) << 16)
++#define SDRAMC_CR_TRCD(x) ((x) << 20)
++#define SDRAMC_CR_TRAS(x) ((x) << 24)
++#define SDRAMC_CR_TXSR(x) ((x) << 28)
++
++/* HSR - High Speed Register */
++#define SDRAMC_HSR_DA ( 1 << 0)
++
++/* LPR - Low Power Register */
++#define SDRAMC_LPR_LPCB_INHIBIT ( 0 << 0)
++#define SDRAMC_LPR_LPCB_SELF_RFR ( 1 << 0)
++#define SDRAMC_LPR_LPCB_PDOWN ( 2 << 0)
++#define SDRAMC_LPR_LPCB_DEEP_PDOWN ( 3 << 0)
++#define SDRAMC_LPR_PASR(x) ((x) << 4)
++#define SDRAMC_LPR_TCSR(x) ((x) << 8)
++#define SDRAMC_LPR_DS(x) ((x) << 10)
++#define SDRAMC_LPR_TIMEOUT(x) ((x) << 12)
++
++/* IER/IDR/IMR/ISR - Interrupt Enable/Disable/Mask/Status Register */
++#define SDRAMC_ISR_RES ( 1 << 0)
++
++/* MDR - Memory Device Register */
++#define SDRAMC_MDR_MD_SDRAM ( 0 << 0)
++#define SDRAMC_MDR_MD_LOW_PWR_SDRAM ( 1 << 0)
+
-+ /*
-+ * Turn on all clocks that have at least one user already, and
-+ * turn off everything else. We only do this for module
-+ * clocks, and even though it isn't particularly pretty to
-+ * check the address of the mode function, it should do the
-+ * trick...
-+ */
-+ for (i = 0; i < ARRAY_SIZE(at32_clock_list); i++) {
-+ struct clk *clk = at32_clock_list[i];
-+
-+ if (clk->users == 0)
-+ continue;
-+
-+ if (clk->mode == &cpu_clk_mode)
-+ cpu_mask |= 1 << clk->index;
-+ else if (clk->mode == &hsb_clk_mode)
-+ hsb_mask |= 1 << clk->index;
-+ else if (clk->mode == &pba_clk_mode)
-+ pba_mask |= 1 << clk->index;
-+ else if (clk->mode == &pbb_clk_mode)
-+ pbb_mask |= 1 << clk->index;
-+ }
-+
-+ pm_writel(CPU_MASK, cpu_mask);
-+ pm_writel(HSB_MASK, hsb_mask);
-+ pm_writel(PBA_MASK, pba_mask);
-+ pm_writel(PBB_MASK, pbb_mask);
-+}
---- a/arch/avr32/mach-at32ap/extint.c
-+++ b/arch/avr32/mach-at32ap/extint.c
-@@ -26,16 +26,10 @@
- #define EIC_MODE 0x0014
- #define EIC_EDGE 0x0018
- #define EIC_LEVEL 0x001c
--#define EIC_TEST 0x0020
- #define EIC_NMIC 0x0024
-
--/* Bitfields in TEST */
--#define EIC_TESTEN_OFFSET 31
--#define EIC_TESTEN_SIZE 1
++/* Register access macros */
++#define sdramc_readl(reg) \
++ __raw_readl((void __iomem __force *)SDRAMC_BASE + SDRAMC_##reg)
++#define sdramc_writel(reg, value) \
++ __raw_writel(value, (void __iomem __force *)SDRAMC_BASE + SDRAMC_##reg)
+diff --exclude=.git -urN linux-2.6.25.6/arch/avr32/mach-at32ap/time-tc.c avr32-2.6/arch/avr32/mach-at32ap/time-tc.c
+--- linux-2.6.25.6/arch/avr32/mach-at32ap/time-tc.c 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/avr32/mach-at32ap/time-tc.c 1970-01-01 01:00:00.000000000 +0100
+@@ -1,218 +0,0 @@
+-/*
+- * Copyright (C) 2004-2007 Atmel Corporation
+- *
+- * Based on MIPS implementation arch/mips/kernel/time.c
+- * Copyright 2001 MontaVista Software Inc.
+- *
+- * This program is free software; you can redistribute it and/or modify
+- * it under the terms of the GNU General Public License version 2 as
+- * published by the Free Software Foundation.
+- */
-
- /* Bitfields in NMIC */
--#define EIC_EN_OFFSET 0
--#define EIC_EN_SIZE 1
-+#define EIC_NMIC_ENABLE (1 << 0)
-
- /* Bit manipulation macros */
- #define EIC_BIT(name) \
-@@ -63,6 +57,9 @@
- unsigned int first_irq;
- };
+-#include <linux/clk.h>
+-#include <linux/clocksource.h>
+-#include <linux/time.h>
+-#include <linux/module.h>
+-#include <linux/interrupt.h>
+-#include <linux/irq.h>
+-#include <linux/kernel_stat.h>
+-#include <linux/errno.h>
+-#include <linux/init.h>
+-#include <linux/profile.h>
+-#include <linux/sysdev.h>
+-#include <linux/err.h>
+-
+-#include <asm/div64.h>
+-#include <asm/sysreg.h>
+-#include <asm/io.h>
+-#include <asm/sections.h>
+-
+-#include <asm/arch/time.h>
+-
+-/* how many counter cycles in a jiffy? */
+-static u32 cycles_per_jiffy;
+-
+-/* the count value for the next timer interrupt */
+-static u32 expirelo;
+-
+-/* the I/O registers of the TC module */
+-static void __iomem *ioregs;
+-
+-cycle_t read_cycle_count(void)
+-{
+- return (cycle_t)timer_read(ioregs, 0, CV);
+-}
+-
+-struct clocksource clocksource_avr32 = {
+- .name = "avr32",
+- .rating = 342,
+- .read = read_cycle_count,
+- .mask = CLOCKSOURCE_MASK(16),
+- .shift = 16,
+- .flags = CLOCK_SOURCE_IS_CONTINUOUS,
+-};
+-
+-static void avr32_timer_ack(void)
+-{
+- u16 count = expirelo;
+-
+- /* Ack this timer interrupt and set the next one, use a u16
+- * variable so it will wrap around correctly */
+- count += cycles_per_jiffy;
+- expirelo = count;
+- timer_write(ioregs, 0, RC, expirelo);
+-
+- /* Check to see if we have missed any timer interrupts */
+- count = timer_read(ioregs, 0, CV);
+- if ((count - expirelo) < 0x7fff) {
+- expirelo = count + cycles_per_jiffy;
+- timer_write(ioregs, 0, RC, expirelo);
+- }
+-}
+-
+-u32 avr32_hpt_read(void)
+-{
+- return timer_read(ioregs, 0, CV);
+-}
+-
+-static int avr32_timer_calc_div_and_set_jiffies(struct clk *pclk)
+-{
+- unsigned int cycles_max = (clocksource_avr32.mask + 1) / 2;
+- unsigned int divs[] = { 4, 8, 16, 32 };
+- int divs_size = ARRAY_SIZE(divs);
+- int i = 0;
+- unsigned long count_hz;
+- unsigned long shift;
+- unsigned long mult;
+- int clock_div = -1;
+- u64 tmp;
+-
+- shift = clocksource_avr32.shift;
+-
+- do {
+- count_hz = clk_get_rate(pclk) / divs[i];
+- mult = clocksource_hz2mult(count_hz, shift);
+- clocksource_avr32.mult = mult;
+-
+- tmp = TICK_NSEC;
+- tmp <<= shift;
+- tmp += mult / 2;
+- do_div(tmp, mult);
+-
+- cycles_per_jiffy = tmp;
+- } while (cycles_per_jiffy > cycles_max && ++i < divs_size);
+-
+- clock_div = i + 1;
+-
+- if (clock_div > divs_size) {
+- pr_debug("timer: could not calculate clock divider\n");
+- return -EFAULT;
+- }
+-
+- /* Set the clock divider */
+- timer_write(ioregs, 0, CMR, TIMER_BF(CMR_TCCLKS, clock_div));
+-
+- return 0;
+-}
+-
+-int avr32_hpt_init(unsigned int count)
+-{
+- struct resource *regs;
+- struct clk *pclk;
+- int irq = -1;
+- int ret = 0;
+-
+- ret = -ENXIO;
+-
+- irq = platform_get_irq(&at32_systc0_device, 0);
+- if (irq < 0) {
+- pr_debug("timer: could not get irq\n");
+- goto out_error;
+- }
+-
+- pclk = clk_get(&at32_systc0_device.dev, "pclk");
+- if (IS_ERR(pclk)) {
+- pr_debug("timer: could not get clk: %ld\n", PTR_ERR(pclk));
+- goto out_error;
+- }
+- clk_enable(pclk);
+-
+- regs = platform_get_resource(&at32_systc0_device, IORESOURCE_MEM, 0);
+- if (!regs) {
+- pr_debug("timer: could not get resource\n");
+- goto out_error_clk;
+- }
+-
+- ioregs = ioremap(regs->start, regs->end - regs->start + 1);
+- if (!ioregs) {
+- pr_debug("timer: could not get ioregs\n");
+- goto out_error_clk;
+- }
+-
+- ret = avr32_timer_calc_div_and_set_jiffies(pclk);
+- if (ret)
+- goto out_error_io;
+-
+- ret = setup_irq(irq, &timer_irqaction);
+- if (ret) {
+- pr_debug("timer: could not request irq %d: %d\n",
+- irq, ret);
+- goto out_error_io;
+- }
+-
+- expirelo = (timer_read(ioregs, 0, CV) / cycles_per_jiffy + 1)
+- * cycles_per_jiffy;
+-
+- /* Enable clock and interrupts on RC compare */
+- timer_write(ioregs, 0, CCR, TIMER_BIT(CCR_CLKEN));
+- timer_write(ioregs, 0, IER, TIMER_BIT(IER_CPCS));
+- /* Set cycles to first interrupt */
+- timer_write(ioregs, 0, RC, expirelo);
+-
+- printk(KERN_INFO "timer: AT32AP system timer/counter at 0x%p irq %d\n",
+- ioregs, irq);
+-
+- return 0;
+-
+-out_error_io:
+- iounmap(ioregs);
+-out_error_clk:
+- clk_put(pclk);
+-out_error:
+- return ret;
+-}
+-
+-int avr32_hpt_start(void)
+-{
+- timer_write(ioregs, 0, CCR, TIMER_BIT(CCR_SWTRG));
+- return 0;
+-}
+-
+-irqreturn_t timer_interrupt(int irq, void *dev_id)
+-{
+- unsigned int sr = timer_read(ioregs, 0, SR);
+-
+- if (sr & TIMER_BIT(SR_CPCS)) {
+- /* ack timer interrupt and try to set next interrupt */
+- avr32_timer_ack();
+-
+- /*
+- * Call the generic timer interrupt handler
+- */
+- write_seqlock(&xtime_lock);
+- do_timer(1);
+- write_sequnlock(&xtime_lock);
+-
+- /*
+- * In UP mode, we call local_timer_interrupt() to do profiling
+- * and process accounting.
+- *
+- * SMP is not supported yet.
+- */
+- local_timer_interrupt(irq, dev_id);
+-
+- return IRQ_HANDLED;
+- }
+-
+- return IRQ_NONE;
+-}
+diff --exclude=.git -urN linux-2.6.25.6/arch/avr32/Makefile avr32-2.6/arch/avr32/Makefile
+--- linux-2.6.25.6/arch/avr32/Makefile 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/avr32/Makefile 2008-06-12 15:09:38.711815728 +0200
+@@ -32,6 +32,7 @@
+ core-y += arch/avr32/kernel/
+ core-y += arch/avr32/mm/
+ drivers-$(CONFIG_OPROFILE) += arch/avr32/oprofile/
++drivers-y += arch/avr32/drivers/
+ libs-y += arch/avr32/lib/
-+static struct eic *nmi_eic;
-+static bool nmi_enabled;
-+
- static void eic_ack_irq(unsigned int irq)
- {
- struct eic *eic = get_irq_chip_data(irq);
-@@ -133,8 +130,11 @@
- eic_writel(eic, EDGE, edge);
- eic_writel(eic, LEVEL, level);
-
-- if (flow_type & (IRQ_TYPE_LEVEL_LOW | IRQ_TYPE_LEVEL_HIGH))
-+ if (flow_type & (IRQ_TYPE_LEVEL_LOW | IRQ_TYPE_LEVEL_HIGH)) {
- flow_type |= IRQ_LEVEL;
-+ __set_irq_handler_unlocked(irq, handle_level_irq);
-+ } else
-+ __set_irq_handler_unlocked(irq, handle_edge_irq);
- desc->status &= ~(IRQ_TYPE_SENSE_MASK | IRQ_LEVEL);
- desc->status |= flow_type;
- }
-@@ -154,9 +154,8 @@
- static void demux_eic_irq(unsigned int irq, struct irq_desc *desc)
- {
- struct eic *eic = desc->handler_data;
-- struct irq_desc *ext_desc;
- unsigned long status, pending;
-- unsigned int i, ext_irq;
-+ unsigned int i;
+ archincdir-$(CONFIG_PLATFORM_AT32AP) := arch-at32ap
+diff --exclude=.git -urN linux-2.6.25.6/arch/avr32/mm/init.c avr32-2.6/arch/avr32/mm/init.c
+--- linux-2.6.25.6/arch/avr32/mm/init.c 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/avr32/mm/init.c 2008-06-12 15:09:38.727815811 +0200
+@@ -11,6 +11,7 @@
+ #include <linux/swap.h>
+ #include <linux/init.h>
+ #include <linux/mmzone.h>
++#include <linux/module.h>
+ #include <linux/bootmem.h>
+ #include <linux/pagemap.h>
+ #include <linux/nodemask.h>
+@@ -28,15 +29,13 @@
+ pgd_t swapper_pg_dir[PTRS_PER_PGD];
- status = eic_readl(eic, ISR);
- pending = status & eic_readl(eic, IMR);
-@@ -165,15 +164,28 @@
- i = fls(pending) - 1;
- pending &= ~(1 << i);
-
-- ext_irq = i + eic->first_irq;
-- ext_desc = irq_desc + ext_irq;
-- if (ext_desc->status & IRQ_LEVEL)
-- handle_level_irq(ext_irq, ext_desc);
-- else
-- handle_edge_irq(ext_irq, ext_desc);
-+ generic_handle_irq(i + eic->first_irq);
- }
- }
+ struct page *empty_zero_page;
++EXPORT_SYMBOL(empty_zero_page);
-+int nmi_enable(void)
-+{
-+ nmi_enabled = true;
-+
-+ if (nmi_eic)
-+ eic_writel(nmi_eic, NMIC, EIC_NMIC_ENABLE);
-+
-+ return 0;
-+}
-+
-+void nmi_disable(void)
-+{
-+ if (nmi_eic)
-+ eic_writel(nmi_eic, NMIC, 0);
-+
-+ nmi_enabled = false;
-+}
-+
- static int __init eic_probe(struct platform_device *pdev)
+ /*
+ * Cache of MMU context last used.
+ */
+ unsigned long mmu_context_cache = NO_CONTEXT;
+
+-#define START_PFN (NODE_DATA(0)->bdata->node_boot_start >> PAGE_SHIFT)
+-#define MAX_LOW_PFN (NODE_DATA(0)->bdata->node_low_pfn)
+-
+ void show_mem(void)
{
- struct eic *eic;
-@@ -214,14 +226,13 @@
- pattern = eic_readl(eic, MODE);
- nr_irqs = fls(pattern);
-
-- /* Trigger on falling edge unless overridden by driver */
-- eic_writel(eic, MODE, 0UL);
-+ /* Trigger on low level unless overridden by driver */
- eic_writel(eic, EDGE, 0UL);
-+ eic_writel(eic, LEVEL, 0UL);
-
- eic->chip = &eic_chip;
-
- for (i = 0; i < nr_irqs; i++) {
-- /* NOTE the handler we set here is ignored by the demux */
- set_irq_chip_and_handler(eic->first_irq + i, &eic_chip,
- handle_level_irq);
- set_irq_chip_data(eic->first_irq + i, eic);
-@@ -230,6 +241,16 @@
- set_irq_chained_handler(int_irq, demux_eic_irq);
- set_irq_data(int_irq, eic);
-
-+ if (pdev->id == 0) {
-+ nmi_eic = eic;
-+ if (nmi_enabled)
-+ /*
-+ * Someone tried to enable NMI before we were
-+ * ready. Do it now.
-+ */
-+ nmi_enable();
-+ }
+ int total = 0, reserved = 0, cached = 0;
+diff --exclude=.git -urN linux-2.6.25.6/arch/avr32/oprofile/op_model_avr32.c avr32-2.6/arch/avr32/oprofile/op_model_avr32.c
+--- linux-2.6.25.6/arch/avr32/oprofile/op_model_avr32.c 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/avr32/oprofile/op_model_avr32.c 2008-06-12 15:03:55.895816260 +0200
+@@ -16,7 +16,6 @@
+ #include <linux/sched.h>
+ #include <linux/types.h>
+
+-#include <asm/intc.h>
+ #include <asm/sysreg.h>
+ #include <asm/system.h>
+
+diff --exclude=.git -urN linux-2.6.25.6/Documentation/ABI/stable/sysfs-class-ubi avr32-2.6/Documentation/ABI/stable/sysfs-class-ubi
+--- linux-2.6.25.6/Documentation/ABI/stable/sysfs-class-ubi 1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/Documentation/ABI/stable/sysfs-class-ubi 2008-06-12 15:03:55.427814470 +0200
+@@ -0,0 +1,212 @@
++What: /sys/class/ubi/
++Date: July 2006
++KernelVersion: 2.6.22
++Contact: Artem Bityutskiy <dedekind@infradead.org>
++Description:
++ The ubi/ class sub-directory belongs to the UBI subsystem and
++ provides general UBI information, per-UBI device information
++ and per-UBI volume information.
++
++What: /sys/class/ubi/version
++Date: July 2006
++KernelVersion: 2.6.22
++Contact: Artem Bityutskiy <dedekind@infradead.org>
++Description:
++ This file contains version of the latest supported UBI on-media
++ format. Currently it is 1, and there is no plan to change this.
++ However, if in the future UBI needs on-flash format changes
++ which cannot be done in a compatible manner, a new format
++ version will be added. So this is a mechanism for possible
++ future backward-compatible (but forward-incompatible)
++ improvements.
++
++What: /sys/class/ubiX/
++Date: July 2006
++KernelVersion: 2.6.22
++Contact: Artem Bityutskiy <dedekind@infradead.org>
++Description:
++ The /sys/class/ubi0, /sys/class/ubi1, etc directories describe
++ UBI devices (UBI device 0, 1, etc). They contain general UBI
++ device information and per UBI volume information (each UBI
++ device may have many UBI volumes)
++
++What: /sys/class/ubi/ubiX/avail_eraseblocks
++Date: July 2006
++KernelVersion: 2.6.22
++Contact: Artem Bityutskiy <dedekind@infradead.org>
++Description:
++ Amount of available logical eraseblock. For example, one may
++ create a new UBI volume which has this amount of logical
++ eraseblocks.
++
++What: /sys/class/ubi/ubiX/bad_peb_count
++Date: July 2006
++KernelVersion: 2.6.22
++Contact: Artem Bityutskiy <dedekind@infradead.org>
++Description:
++ Count of bad physical eraseblocks on the underlying MTD device.
++
++What: /sys/class/ubi/ubiX/bgt_enabled
++Date: July 2006
++KernelVersion: 2.6.22
++Contact: Artem Bityutskiy <dedekind@infradead.org>
++Description:
++ Contains ASCII "0\n" if the UBI background thread is disabled,
++ and ASCII "1\n" if it is enabled.
++
++What: /sys/class/ubi/ubiX/dev
++Date: July 2006
++KernelVersion: 2.6.22
++Contact: Artem Bityutskiy <dedekind@infradead.org>
++Description:
++ Major and minor numbers of the character device corresponding
++ to this UBI device (in <major>:<minor> format).
++
++What: /sys/class/ubi/ubiX/eraseblock_size
++Date: July 2006
++KernelVersion: 2.6.22
++Contact: Artem Bityutskiy <dedekind@infradead.org>
++Description:
++ Maximum logical eraseblock size this UBI device may provide. UBI
++ volumes may have smaller logical eraseblock size because of their
++ alignment.
++
++What: /sys/class/ubi/ubiX/max_ec
++Date: July 2006
++KernelVersion: 2.6.22
++Contact: Artem Bityutskiy <dedekind@infradead.org>
++Description:
++ Maximum physical eraseblock erase counter value.
++
++What: /sys/class/ubi/ubiX/max_vol_count
++Date: July 2006
++KernelVersion: 2.6.22
++Contact: Artem Bityutskiy <dedekind@infradead.org>
++Description:
++ Maximum number of volumes which this UBI device may have.
++
++What: /sys/class/ubi/ubiX/min_io_size
++Date: July 2006
++KernelVersion: 2.6.22
++Contact: Artem Bityutskiy <dedekind@infradead.org>
++Description:
++ Minimum input/output unit size. All the I/O may only be done
++ in fractions of the contained number.
++
++What: /sys/class/ubi/ubiX/mtd_num
++Date: January 2008
++KernelVersion: 2.6.25
++Contact: Artem Bityutskiy <dedekind@infradead.org>
++Description:
++ Number of the underlying MTD device.
++
++What: /sys/class/ubi/ubiX/reserved_for_bad
++Date: July 2006
++KernelVersion: 2.6.22
++Contact: Artem Bityutskiy <dedekind@infradead.org>
++Description:
++ Number of physical eraseblocks reserved for bad block handling.
++
++What: /sys/class/ubi/ubiX/total_eraseblocks
++Date: July 2006
++KernelVersion: 2.6.22
++Contact: Artem Bityutskiy <dedekind@infradead.org>
++Description:
++ Total number of good (not marked as bad) physical eraseblocks on
++ the underlying MTD device.
++
++What: /sys/class/ubi/ubiX/volumes_count
++Date: July 2006
++KernelVersion: 2.6.22
++Contact: Artem Bityutskiy <dedekind@infradead.org>
++Description:
++ Count of volumes on this UBI device.
++
++What: /sys/class/ubi/ubiX/ubiX_Y/
++Date: July 2006
++KernelVersion: 2.6.22
++Contact: Artem Bityutskiy <dedekind@infradead.org>
++Description:
++ The /sys/class/ubi/ubiX/ubiX_0/, /sys/class/ubi/ubiX/ubiX_1/,
++ etc directories describe UBI volumes on UBI device X (volumes
++ 0, 1, etc).
++
++What: /sys/class/ubi/ubiX/ubiX_Y/alignment
++Date: July 2006
++KernelVersion: 2.6.22
++Contact: Artem Bityutskiy <dedekind@infradead.org>
++Description:
++ Volume alignment - the value the logical eraseblock size of
++ this volume has to be aligned on. For example, 2048 means that
++ logical eraseblock size is multiple of 2048. In other words,
++ volume logical eraseblock size is UBI device logical eraseblock
++ size aligned to the alignment value.
++
++What: /sys/class/ubi/ubiX/ubiX_Y/corrupted
++Date: July 2006
++KernelVersion: 2.6.22
++Contact: Artem Bityutskiy <dedekind@infradead.org>
++Description:
++ Contains ASCII "0\n" if the UBI volume is OK, and ASCII "1\n"
++ if it is corrupted (e.g., due to an interrupted volume update).
++
++What: /sys/class/ubi/ubiX/ubiX_Y/data_bytes
++Date: July 2006
++KernelVersion: 2.6.22
++Contact: Artem Bityutskiy <dedekind@infradead.org>
++Description:
++ The amount of data this volume contains. This value makes sense
++ only for static volumes, and for dynamic volume it equivalent
++ to the total volume size in bytes.
++
++What: /sys/class/ubi/ubiX/ubiX_Y/dev
++Date: July 2006
++KernelVersion: 2.6.22
++Contact: Artem Bityutskiy <dedekind@infradead.org>
++Description:
++ Major and minor numbers of the character device corresponding
++ to this UBI volume (in <major>:<minor> format).
++
++What: /sys/class/ubi/ubiX/ubiX_Y/name
++Date: July 2006
++KernelVersion: 2.6.22
++Contact: Artem Bityutskiy <dedekind@infradead.org>
++Description:
++ Volume name.
++
++What: /sys/class/ubi/ubiX/ubiX_Y/reserved_ebs
++Date: July 2006
++KernelVersion: 2.6.22
++Contact: Artem Bityutskiy <dedekind@infradead.org>
++Description:
++ Count of physical eraseblock reserved for this volume.
++ Equivalent to the volume size in logical eraseblocks.
++
++What: /sys/class/ubi/ubiX/ubiX_Y/type
++Date: July 2006
++KernelVersion: 2.6.22
++Contact: Artem Bityutskiy <dedekind@infradead.org>
++Description:
++ Volume type. Contains ASCII "dynamic\n" for dynamic volumes and
++ "static\n" for static volumes.
++
++What: /sys/class/ubi/ubiX/ubiX_Y/upd_marker
++Date: July 2006
++KernelVersion: 2.6.22
++Contact: Artem Bityutskiy <dedekind@infradead.org>
++Description:
++ Contains ASCII "0\n" if the update marker is not set for this
++ volume, and "1\n" if it is set. The update marker is set when
++ volume update starts, and cleaned when it ends. So the presence
++ of the update marker indicates that the volume is being updated
++ at the moment of the update was interrupted. The later may be
++ checked using the "corrupted" sysfs file.
++
++What: /sys/class/ubi/ubiX/ubiX_Y/usable_eb_size
++Date: July 2006
++KernelVersion: 2.6.22
++Contact: Artem Bityutskiy <dedekind@infradead.org>
++Description:
++ Logical eraseblock size of this volume. Equivalent to logical
++ eraseblock size of the device aligned on the volume alignment
++ value.
+diff --exclude=.git -urN linux-2.6.25.6/Documentation/filesystems/ubifs.txt avr32-2.6/Documentation/filesystems/ubifs.txt
+--- linux-2.6.25.6/Documentation/filesystems/ubifs.txt 1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/Documentation/filesystems/ubifs.txt 2008-06-12 15:09:38.451815572 +0200
+@@ -0,0 +1,163 @@
++Introduction
++=============
++
++UBIFS file-system stands for UBI File System. UBI stands for "Unsorted
++Block Images". UBIFS is a flash file system, which means it is designed
++to work with flash devices. It is important to understand, that UBIFS
++is completely different to any traditional file-system in Linux, like
++Ext2, XFS, JFS, etc. UBIFS represents a separate class of file-systems
++which work with MTD devices, not block devices. The other Linux
++file-system of this class is JFFS2.
++
++To make it more clear, here is a small comparison of MTD devices and
++block devices.
++
++1 MTD devices represent flash devices and they consist of eraseblocks of
++ rather large size, typically about 128KiB. Block devices consist of
++ small blocks, typically 512 bytes.
++2 MTD devices support 3 main operations - read from some offset within an
++ eraseblock, write to some offset within an eraseblock, and erase a whole
++ eraseblock. Block devices support 2 main operations - read a whole
++ block and write a whole block.
++3 The whole eraseblock has to be erased before it becomes possible to
++ re-write its contents. Blocks may be just re-written.
++4 Eraseblocks become worn out after some number of erase cycles -
++ typically 100K-1G for SLC NAND and NOR flashes, and 1K-10K for MLC
++ NAND flashes. Blocks do not have the wear-out property.
++5 Eraseblocks may become bad (only on NAND flashes) and software should
++ deal with this. Blocks on hard drives typically do not become bad,
++ because hardware has mechanisms to substitute bad blocks, at least in
++ modern LBA disks.
++
++It should be quite obvious why UBIFS is very different to traditional
++file-systems.
++
++UBIFS works on top of UBI. UBI is a separate software layer which may be
++found in drivers/mtd/ubi. UBI is basically a volume management and
++wear-leveling layer. It provides so called UBI volumes which is a higher
++level abstraction than a MTD device. The programming model of UBI devices
++is very similar to MTD devices - they still consist of large eraseblocks,
++they have read/write/erase operations, but UBI devices are devoid of
++limitations like wear and bad blocks (items 4 and 5 in the above list).
++
++In a sense, UBIFS is a next generation of JFFS2 file-system, but it is
++very different and incompatible to JFFS2. The following are the main
++differences.
++
++* JFFS2 works on top of MTD devices, UBIFS depends on UBI and works on
++ top of UBI volumes.
++* JFFS2 does not have on-media index and has to build it while mounting,
++ which requires full media scan. UBIFS maintains the FS indexing
++ information on the flash media and does not require full media scan,
++ so it mounts many times faster than JFFS2.
++* JFFS2 is a write-through file-system, while UBIFS supports write-back,
++ which makes UBIFS much faster on writes.
++
++Similarly to JFFS2, UBIFS supports on-the-flight compression which makes
++it possible to fit quite a lot of data to the flash.
++
++Similarly to JFFS2, UBIFS is tolerant of unclean reboots and power-cuts.
++It does not need stuff like ckfs.ext2. UBIFS automatically replays its
++journal and recovers from crashes, ensuring that the on-flash data
++structures are consistent.
++
++UBIFS scales logarithmically (most of the data structures it uses are
++trees), so the mount time and memory consumption do not linearly depend
++on the flash size, like in case of JFFS2. This is because UBIFS
++maintains the FS index on the flash media. However, UBIFS depends on
++UBI, which scales linearly. So overall UBI/UBIFS stack scales linearly.
++Nevertheless, UBI/UBIFS scales considerably better than JFFS2.
++
++The authors of UBIFS believe, that it is possible to develop UBI2 which
++would scale logarithmically as well. UBI2 would support the same API as UBI,
++but it would be binary incompatible to UBI. So UBIFS would not need to be
++changed to use UBI2
++
++
++Mount options
++=============
++
++(*) == default.
++
++norm_unmount (*) commit on unmount; the journal is committed
++ when the file-system is unmounted so that the
++ next mount does not have to replay the journal
++ and it becomes very fast;
++fast_unmount do not commit on unmount; this option makes
++ unmount faster, but the next mount slower
++ because of the need to replay the journal.
++
++
++Quick usage instructions
++========================
++
++The UBI volume to mount is specified using "ubiX_Y" or "ubiX:NAME" syntax,
++where "X" is UBI device number, "Y" is UBI volume number, and "NAME" is
++UBI volume name.
++
++Mount volume 0 on UBI device 0 to /mnt/ubifs:
++$ mount -t ubifs ubi0_0 /mnt/ubifs
++
++Mount "rootfs" volume of UBI device 0 to /mnt/ubifs ("rootfs" is volume
++name):
++$ mount -t ubifs ubi0:rootfs /mnt/ubifs
++
++The following is an example of the kernel boot arguments to attach mtd0
++to UBI and mount volume "rootfs":
++ubi.mtd=0 root=ubi0:rootfs rootfstype=ubifs
++
++
++Module Parameters for Debugging
++===============================
++
++When UBIFS has been compiled with debugging enabled, there are 3 module
++parameters that are available to control aspects of testing and debugging.
++The parameters are unsigned integers where each bit controls an option.
++The parameters are:
++
++debug_msgs Selects which debug messages to display, as follows:
++
++ Message Type Flag value
++
++ General messages 1
++ Journal messages 2
++ Mount messages 4
++ Commit messages 8
++ LEB search messages 16
++ Budgeting messages 32
++ Garbage collection messages 64
++ Tree Node Cache (TNC) messages 128
++ LEB properties (lprops) messages 256
++ Input/output messages 512
++ Log messages 1024
++ Scan messages 2048
++ Recovery messages 4096
++
++debug_chks Selects extra checks that UBIFS can do while running:
++
++ Check Flag value
++
++ General checks 1
++ Check Tree Node Cache (TNC) 2
++ Check indexing tree size 4
++ Check orphan area 8
++ Check old indexing tree 16
++ Check LEB properties (lprops) 32
++
++debug_tsts Selects a mode of testing, as follows:
++
++ Test mode Flag value
++
++ Force in-the-gaps method 2
++ Failure mode for recovery testing 4
++
++For example, set debug_msgs to 5 to display General messages and Mount
++messages.
++
++
++References
++==========
++
++UBIFS documentation and FAQ/HOWTO at the MTD web site:
++http://www.linux-mtd.infradead.org/doc/ubifs.html
++http://www.linux-mtd.infradead.org/faq/ubifs.html
+diff --exclude=.git -urN linux-2.6.25.6/drivers/char/Kconfig avr32-2.6/drivers/char/Kconfig
+--- linux-2.6.25.6/drivers/char/Kconfig 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/char/Kconfig 2008-06-12 15:09:40.071816052 +0200
+@@ -706,7 +706,7 @@
+
+ config RTC
+ tristate "Enhanced Real Time Clock Support"
+- depends on !PPC && !PARISC && !IA64 && !M68K && !SPARC && !FRV && !ARM && !SUPERH && !S390
++ depends on !PPC && !PARISC && !IA64 && !M68K && !SPARC && !FRV && !ARM && !SUPERH && !S390 && !AVR32
+ ---help---
+ If you say Y here and create a character special file /dev/rtc with
+ major number 10 and minor number 135 using mknod ("man mknod"), you
+@@ -776,7 +776,7 @@
+
+ config GEN_RTC
+ tristate "Generic /dev/rtc emulation"
+- depends on RTC!=y && !IA64 && !ARM && !M32R && !MIPS && !SPARC && !FRV && !S390 && !SUPERH
++ depends on RTC!=y && !IA64 && !ARM && !M32R && !MIPS && !SPARC && !FRV && !S390 && !SUPERH && !AVR32
+ ---help---
+ If you say Y here and create a character special file /dev/rtc with
+ major number 10 and minor number 135 using mknod ("man mknod"), you
+diff --exclude=.git -urN linux-2.6.25.6/drivers/char/keyboard.c avr32-2.6/drivers/char/keyboard.c
+--- linux-2.6.25.6/drivers/char/keyboard.c 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/char/keyboard.c 2008-06-12 15:09:40.243816452 +0200
+@@ -1033,7 +1033,8 @@
+ #if defined(CONFIG_X86) || defined(CONFIG_IA64) || defined(CONFIG_ALPHA) ||\
+ defined(CONFIG_MIPS) || defined(CONFIG_PPC) || defined(CONFIG_SPARC) ||\
+ defined(CONFIG_PARISC) || defined(CONFIG_SUPERH) ||\
+- (defined(CONFIG_ARM) && defined(CONFIG_KEYBOARD_ATKBD) && !defined(CONFIG_ARCH_RPC))
++ (defined(CONFIG_ARM) && defined(CONFIG_KEYBOARD_ATKBD) && !defined(CONFIG_ARCH_RPC)) ||\
++ defined(CONFIG_AVR32)
+
+ #define HW_RAW(dev) (test_bit(EV_MSC, dev->evbit) && test_bit(MSC_RAW, dev->mscbit) &&\
+ ((dev)->id.bustype == BUS_I8042) && ((dev)->id.vendor == 0x0001) && ((dev)->id.product == 0x0001))
+diff --exclude=.git -urN linux-2.6.25.6/drivers/clocksource/Makefile avr32-2.6/drivers/clocksource/Makefile
+--- linux-2.6.25.6/drivers/clocksource/Makefile 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/clocksource/Makefile 2008-06-12 15:03:58.475816394 +0200
+@@ -1,3 +1,4 @@
++obj-$(CONFIG_ATMEL_TCB_CLKSRC) += tcb_clksrc.o
+ obj-$(CONFIG_X86_CYCLONE_TIMER) += cyclone.o
+ obj-$(CONFIG_X86_PM_TIMER) += acpi_pm.o
+ obj-$(CONFIG_SCx200HR_TIMER) += scx200_hrt.o
+diff --exclude=.git -urN linux-2.6.25.6/drivers/clocksource/tcb_clksrc.c avr32-2.6/drivers/clocksource/tcb_clksrc.c
+--- linux-2.6.25.6/drivers/clocksource/tcb_clksrc.c 1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/drivers/clocksource/tcb_clksrc.c 2008-06-12 15:03:58.479814669 +0200
+@@ -0,0 +1,302 @@
++#include <linux/init.h>
++#include <linux/clocksource.h>
++#include <linux/clockchips.h>
++#include <linux/interrupt.h>
++#include <linux/irq.h>
++
++#include <linux/clk.h>
++#include <linux/err.h>
++#include <linux/ioport.h>
++#include <linux/io.h>
++#include <linux/platform_device.h>
++#include <linux/atmel_tc.h>
++
+
- dev_info(&pdev->dev,
- "External Interrupt Controller at 0x%p, IRQ %u\n",
- eic->regs, int_irq);
---- /dev/null
-+++ b/arch/avr32/mach-at32ap/gpio-dev.c
-@@ -0,0 +1,573 @@
+/*
-+ * GPIO /dev and configfs interface
++ * We're configured to use a specific TC block, one that's not hooked
++ * up to external hardware, to provide a time solution:
+ *
-+ * Copyright (C) 2006-2007 Atmel Corporation
++ * - Two channels combine to create a free-running 32 bit counter
++ * with a base rate of 5+ MHz, packaged as a clocksource (with
++ * resolution better than 200 nsec).
+ *
-+ * This program is free software; you can redistribute it and/or modify
-+ * it under the terms of the GNU General Public License version 2 as
-+ * published by the Free Software Foundation.
++ * - The third channel may be used to provide a 16-bit clockevent
++ * source, used in either periodic or oneshot mode. This runs
++ * at 32 KiHZ, and can handle delays of up to two seconds.
++ *
++ * A boot clocksource and clockevent source are also currently needed,
++ * unless the relevant platforms (ARM/AT91, AVR32/AT32) are changed so
++ * this code can be used when init_timers() is called, well before most
++ * devices are set up. (Some low end AT91 parts, which can run uClinux,
++ * have only the timers in one TC block... they currently don't support
++ * the tclib code, because of that initialization issue.)
++ *
++ * REVISIT behavior during system suspend states... we should disable
++ * all clocks and save the power. Easily done for clockevent devices,
++ * but clocksources won't necessarily get the needed notifications.
++ * For deeper system sleep states, this will be mandatory...
+ */
-+#include <linux/kernel.h>
-+#include <linux/configfs.h>
-+#include <linux/cdev.h>
-+#include <linux/device.h>
-+#include <linux/fs.h>
-+#include <linux/interrupt.h>
-+#include <linux/module.h>
-+#include <linux/poll.h>
-+#include <linux/uaccess.h>
-+#include <linux/wait.h>
-+
-+#include <asm/gpio.h>
-+#include <asm/arch/portmux.h>
+
-+#define GPIO_DEV_MAX 8
-+
-+static struct class *gpio_dev_class;
-+static dev_t gpio_devt;
-+
-+struct gpio_item {
-+ spinlock_t lock;
++static void __iomem *tcaddr;
+
-+ int enabled;
-+ int initialized;
-+ int port;
-+ u32 pin_mask;
-+ u32 oe_mask;
++static cycle_t tc_get_cycles(void)
++{
++ unsigned long flags;
++ u32 lower, upper;
+
-+ /* Pin state last time we read it (for blocking reads) */
-+ u32 pin_state;
-+ int changed;
++ raw_local_irq_save(flags);
++ do {
++ upper = __raw_readl(tcaddr + ATMEL_TC_REG(1, CV));
++ lower = __raw_readl(tcaddr + ATMEL_TC_REG(0, CV));
++ } while (upper != __raw_readl(tcaddr + ATMEL_TC_REG(1, CV)));
+
-+ wait_queue_head_t change_wq;
-+ struct fasync_struct *async_queue;
++ raw_local_irq_restore(flags);
++ return (upper << 16) | lower;
++}
+
-+ int id;
-+ struct class_device *gpio_dev;
-+ struct cdev char_dev;
-+ struct config_item item;
++static struct clocksource clksrc = {
++ .name = "tcb_clksrc",
++ .rating = 200,
++ .read = tc_get_cycles,
++ .mask = CLOCKSOURCE_MASK(32),
++ .shift = 18,
++ .flags = CLOCK_SOURCE_IS_CONTINUOUS,
+};
+
-+struct gpio_attribute {
-+ struct configfs_attribute attr;
-+ ssize_t (*show)(struct gpio_item *, char *);
-+ ssize_t (*store)(struct gpio_item *, const char *, size_t);
++#ifdef CONFIG_GENERIC_CLOCKEVENTS
++
++struct tc_clkevt_device {
++ struct clock_event_device clkevt;
++ struct clk *clk;
++ void __iomem *regs;
+};
+
-+static irqreturn_t gpio_dev_interrupt(int irq, void *dev_id)
++static struct tc_clkevt_device *to_tc_clkevt(struct clock_event_device *clkevt)
+{
-+ struct gpio_item *gpio = dev_id;
-+ u32 old_state, new_state;
++ return container_of(clkevt, struct tc_clkevt_device, clkevt);
++}
+
-+ old_state = gpio->pin_state;
-+ new_state = at32_gpio_get_value_multiple(gpio->port, gpio->pin_mask);
-+ gpio->pin_state = new_state;
++/* For now, we always use the 32K clock ... this optimizes for NO_HZ,
++ * because using one of the divided clocks would usually mean the
++ * tick rate can never be less than several dozen Hz (vs 0.5 Hz).
++ *
++ * A divided clock could be good for high resolution timers, since
++ * 30.5 usec resolution can seem "low".
++ */
++static u32 timer_clock;
+
-+ if (new_state != old_state) {
-+ gpio->changed = 1;
-+ wake_up_interruptible(&gpio->change_wq);
++static void tc_mode(enum clock_event_mode m, struct clock_event_device *d)
++{
++ struct tc_clkevt_device *tcd = to_tc_clkevt(d);
++ void __iomem *regs = tcd->regs;
+
-+ if (gpio->async_queue)
-+ kill_fasync(&gpio->async_queue, SIGIO, POLL_IN);
++ if (tcd->clkevt.mode == CLOCK_EVT_MODE_PERIODIC
++ || tcd->clkevt.mode == CLOCK_EVT_MODE_ONESHOT) {
++ __raw_writel(0xff, regs + ATMEL_TC_REG(2, IDR));
++ __raw_writel(ATMEL_TC_CLKDIS, regs + ATMEL_TC_REG(2, CCR));
++ clk_disable(tcd->clk);
+ }
+
-+ return IRQ_HANDLED;
-+}
++ switch (m) {
+
-+static int gpio_dev_open(struct inode *inode, struct file *file)
-+{
-+ struct gpio_item *gpio = container_of(inode->i_cdev,
-+ struct gpio_item,
-+ char_dev);
-+ unsigned int irq;
-+ unsigned int i;
-+ int ret;
++ /* By not making the gentime core emulate periodic mode on top
++ * of oneshot, we get lower overhead and improved accuracy.
++ */
++ case CLOCK_EVT_MODE_PERIODIC:
++ clk_enable(tcd->clk);
+
-+ nonseekable_open(inode, file);
-+ config_item_get(&gpio->item);
-+ file->private_data = gpio;
++ /* slow clock, count up to RC, then irq and restart */
++ __raw_writel(timer_clock
++ | ATMEL_TC_WAVE | ATMEL_TC_WAVESEL_UP_AUTO,
++ regs + ATMEL_TC_REG(2, CMR));
++ __raw_writel((32768 + HZ/2) / HZ, tcaddr + ATMEL_TC_REG(2, RC));
+
-+ gpio->pin_state = at32_gpio_get_value_multiple(gpio->port,
-+ gpio->pin_mask);
-+ gpio->changed = 1;
++ /* Enable clock and interrupts on RC compare */
++ __raw_writel(ATMEL_TC_CPCS, regs + ATMEL_TC_REG(2, IER));
+
-+ for (i = 0; i < 32; i++) {
-+ if (gpio->pin_mask & (1 << i)) {
-+ irq = gpio_to_irq(32 * gpio->port + i);
-+ ret = request_irq(irq, gpio_dev_interrupt, 0,
-+ "gpio-dev", gpio);
-+ if (ret)
-+ goto err_irq;
-+ }
-+ }
++ /* go go gadget! */
++ __raw_writel(ATMEL_TC_CLKEN | ATMEL_TC_SWTRG,
++ regs + ATMEL_TC_REG(2, CCR));
++ break;
+
-+ return 0;
++ case CLOCK_EVT_MODE_ONESHOT:
++ clk_enable(tcd->clk);
+
-+err_irq:
-+ while (i--) {
-+ if (gpio->pin_mask & (1 << i)) {
-+ irq = gpio_to_irq(32 * gpio->port + i);
-+ free_irq(irq, gpio);
-+ }
-+ }
++ /* slow clock, count up to RC, then irq and stop */
++ __raw_writel(timer_clock | ATMEL_TC_CPCSTOP
++ | ATMEL_TC_WAVE | ATMEL_TC_WAVESEL_UP_AUTO,
++ regs + ATMEL_TC_REG(2, CMR));
++ __raw_writel(ATMEL_TC_CPCS, regs + ATMEL_TC_REG(2, IER));
+
-+ config_item_put(&gpio->item);
++ /* set_next_event() configures and starts the timer */
++ break;
+
-+ return ret;
++ default:
++ break;
++ }
+}
+
-+static int gpio_dev_fasync(int fd, struct file *file, int mode)
++static int tc_next_event(unsigned long delta, struct clock_event_device *d)
+{
-+ struct gpio_item *gpio = file->private_data;
++ __raw_writel(delta, tcaddr + ATMEL_TC_REG(2, RC));
+
-+ return fasync_helper(fd, file, mode, &gpio->async_queue);
++ /* go go gadget! */
++ __raw_writel(ATMEL_TC_CLKEN | ATMEL_TC_SWTRG,
++ tcaddr + ATMEL_TC_REG(2, CCR));
++ return 0;
+}
+
-+static int gpio_dev_release(struct inode *inode, struct file *file)
-+{
-+ struct gpio_item *gpio = file->private_data;
-+ unsigned int irq;
-+ unsigned int i;
++static struct tc_clkevt_device clkevt = {
++ .clkevt = {
++ .name = "tc_clkevt",
++ .features = CLOCK_EVT_FEAT_PERIODIC
++ | CLOCK_EVT_FEAT_ONESHOT,
++ .shift = 32,
++ /* Should be lower than at91rm9200's system timer */
++ .rating = 125,
++ .cpumask = CPU_MASK_CPU0,
++ .set_next_event = tc_next_event,
++ .set_mode = tc_mode,
++ },
++};
+
-+ gpio_dev_fasync(-1, file, 0);
++static irqreturn_t ch2_irq(int irq, void *handle)
++{
++ struct tc_clkevt_device *dev = handle;
++ unsigned int sr;
+
-+ for (i = 0; i < 32; i++) {
-+ if (gpio->pin_mask & (1 << i)) {
-+ irq = gpio_to_irq(32 * gpio->port + i);
-+ free_irq(irq, gpio);
-+ }
++ sr = __raw_readl(dev->regs + ATMEL_TC_REG(2, SR));
++ if (sr & ATMEL_TC_CPCS) {
++ dev->clkevt.event_handler(&dev->clkevt);
++ return IRQ_HANDLED;
+ }
+
-+ config_item_put(&gpio->item);
-+
-+ return 0;
++ return IRQ_NONE;
+}
+
-+static unsigned int gpio_dev_poll(struct file *file, poll_table *wait)
++static struct irqaction tc_irqaction = {
++ .name = "tc_clkevt",
++ .flags = IRQF_TIMER | IRQF_DISABLED,
++ .handler = ch2_irq,
++};
++
++static void __init setup_clkevents(struct atmel_tc *tc, int clk32k_divisor_idx)
+{
-+ struct gpio_item *gpio = file->private_data;
-+ unsigned int mask = 0;
++ struct clk *t2_clk = tc->clk[2];
++ int irq = tc->irq[2];
+
-+ poll_wait(file, &gpio->change_wq, wait);
-+ if (gpio->changed)
-+ mask |= POLLIN | POLLRDNORM;
++ clkevt.regs = tc->regs;
++ clkevt.clk = t2_clk;
++ tc_irqaction.dev_id = &clkevt;
+
-+ return mask;
++ timer_clock = clk32k_divisor_idx;
++
++ clkevt.clkevt.mult = div_sc(32768, NSEC_PER_SEC, clkevt.clkevt.shift);
++ clkevt.clkevt.max_delta_ns
++ = clockevent_delta2ns(0xffff, &clkevt.clkevt);
++ clkevt.clkevt.min_delta_ns = clockevent_delta2ns(1, &clkevt.clkevt) + 1;
++
++ setup_irq(irq, &tc_irqaction);
++
++ clockevents_register_device(&clkevt.clkevt);
+}
+
-+static ssize_t gpio_dev_read(struct file *file, char __user *buf,
-+ size_t count, loff_t *offset)
++#else /* !CONFIG_GENERIC_CLOCKEVENTS */
++
++static void __init setup_clkevents(struct atmel_tc *tc, int clk32k_divisor_idx)
+{
-+ struct gpio_item *gpio = file->private_data;
-+ u32 value;
++ /* NOTHING */
++}
+
-+ spin_lock_irq(&gpio->lock);
-+ while (!gpio->changed) {
-+ spin_unlock_irq(&gpio->lock);
++#endif
+
-+ if (file->f_flags & O_NONBLOCK)
-+ return -EAGAIN;
++static int __init tcb_clksrc_init(void)
++{
++ static char bootinfo[] __initdata
++ = KERN_DEBUG "%s: tc%d at %d.%03d MHz\n";
+
-+ if (wait_event_interruptible(gpio->change_wq, gpio->changed))
-+ return -ERESTARTSYS;
++ struct platform_device *pdev;
++ struct atmel_tc *tc;
++ struct clk *t0_clk;
++ u32 rate, divided_rate = 0;
++ int best_divisor_idx = -1;
++ int clk32k_divisor_idx = -1;
++ int i;
+
-+ spin_lock_irq(&gpio->lock);
++ tc = atmel_tc_alloc(CONFIG_ATMEL_TCB_CLKSRC_BLOCK, clksrc.name);
++ if (!tc) {
++ pr_debug("can't alloc TC for clocksource\n");
++ return -ENODEV;
+ }
++ tcaddr = tc->regs;
++ pdev = tc->pdev;
+
-+ gpio->changed = 0;
-+ value = at32_gpio_get_value_multiple(gpio->port, gpio->pin_mask);
++ t0_clk = tc->clk[0];
++ clk_enable(t0_clk);
+
-+ spin_unlock_irq(&gpio->lock);
++ /* How fast will we be counting? Pick something over 5 MHz. */
++ rate = (u32) clk_get_rate(t0_clk);
++ for (i = 0; i < 5; i++) {
++ unsigned divisor = atmel_tc_divisors[i];
++ unsigned tmp;
+
-+ count = min(count, (size_t)4);
-+ if (copy_to_user(buf, &value, count))
-+ return -EFAULT;
++ /* remember 32 KiHz clock for later */
++ if (!divisor) {
++ clk32k_divisor_idx = i;
++ continue;
++ }
+
-+ return count;
-+}
++ tmp = rate / divisor;
++ pr_debug("TC: %u / %-3u [%d] --> %u\n", rate, divisor, i, tmp);
++ if (best_divisor_idx > 0) {
++ if (tmp < 5 * 1000 * 1000)
++ continue;
++ }
++ divided_rate = tmp;
++ best_divisor_idx = i;
++ }
+
-+static ssize_t gpio_dev_write(struct file *file, const char __user *buf,
-+ size_t count, loff_t *offset)
-+{
-+ struct gpio_item *gpio = file->private_data;
-+ u32 value = 0;
-+ u32 mask = ~0UL;
++ clksrc.mult = clocksource_hz2mult(divided_rate, clksrc.shift);
+
-+ count = min(count, (size_t)4);
-+ if (copy_from_user(&value, buf, count))
-+ return -EFAULT;
++ printk(bootinfo, clksrc.name, CONFIG_ATMEL_TCB_CLKSRC_BLOCK,
++ divided_rate / 1000000,
++ ((divided_rate + 500000) % 1000000) / 1000);
+
-+ /* Assuming big endian */
-+ mask <<= (4 - count) * 8;
-+ mask &= gpio->pin_mask;
++ /* tclib will give us three clocks no matter what the
++ * underlying platform supports.
++ */
++ clk_enable(tc->clk[1]);
+
-+ at32_gpio_set_value_multiple(gpio->port, value, mask);
++ /* channel 0: waveform mode, input mclk/8, clock TIOA0 on overflow */
++ __raw_writel(best_divisor_idx /* likely divide-by-8 */
++ | ATMEL_TC_WAVE
++ | ATMEL_TC_WAVESEL_UP /* free-run */
++ | ATMEL_TC_ACPA_SET /* TIOA0 rises at 0 */
++ | ATMEL_TC_ACPC_CLEAR, /* (duty cycle 50%) */
++ tcaddr + ATMEL_TC_REG(0, CMR));
++ __raw_writel(0x0000, tcaddr + ATMEL_TC_REG(0, RA));
++ __raw_writel(0x8000, tcaddr + ATMEL_TC_REG(0, RC));
++ __raw_writel(0xff, tcaddr + ATMEL_TC_REG(0, IDR)); /* no irqs */
++ __raw_writel(ATMEL_TC_CLKEN, tcaddr + ATMEL_TC_REG(0, CCR));
+
-+ return count;
-+}
++ /* channel 1: waveform mode, input TIOA0 */
++ __raw_writel(ATMEL_TC_XC1 /* input: TIOA0 */
++ | ATMEL_TC_WAVE
++ | ATMEL_TC_WAVESEL_UP, /* free-run */
++ tcaddr + ATMEL_TC_REG(1, CMR));
++ __raw_writel(0xff, tcaddr + ATMEL_TC_REG(1, IDR)); /* no irqs */
++ __raw_writel(ATMEL_TC_CLKEN, tcaddr + ATMEL_TC_REG(1, CCR));
+
-+static struct file_operations gpio_dev_fops = {
-+ .owner = THIS_MODULE,
-+ .llseek = no_llseek,
-+ .open = gpio_dev_open,
-+ .release = gpio_dev_release,
-+ .fasync = gpio_dev_fasync,
-+ .poll = gpio_dev_poll,
-+ .read = gpio_dev_read,
-+ .write = gpio_dev_write,
-+};
++ /* chain channel 0 to channel 1, then reset all the timers */
++ __raw_writel(ATMEL_TC_TC1XC1S_TIOA0, tcaddr + ATMEL_TC_BMR);
++ __raw_writel(ATMEL_TC_SYNC, tcaddr + ATMEL_TC_BCR);
+
-+static struct gpio_item *to_gpio_item(struct config_item *item)
-+{
-+ return item ? container_of(item, struct gpio_item, item) : NULL;
-+}
++ /* and away we go! */
++ clocksource_register(&clksrc);
+
-+static ssize_t gpio_show_gpio_id(struct gpio_item *gpio, char *page)
-+{
-+ return sprintf(page, "%d\n", gpio->port);
++ /* channel 2: periodic and oneshot timer support */
++ setup_clkevents(tc, clk32k_divisor_idx);
++
++ return 0;
+}
++arch_initcall(tcb_clksrc_init);
+diff --exclude=.git -urN linux-2.6.25.6/drivers/i2c/busses/i2c-atmeltwi.c avr32-2.6/drivers/i2c/busses/i2c-atmeltwi.c
+--- linux-2.6.25.6/drivers/i2c/busses/i2c-atmeltwi.c 1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/drivers/i2c/busses/i2c-atmeltwi.c 2008-06-12 15:09:40.391816588 +0200
+@@ -0,0 +1,436 @@
++/*
++ * i2c Support for Atmel's Two-Wire Interface (TWI)
++ *
++ * Based on the work of Copyright (C) 2004 Rick Bronson
++ * Converted to 2.6 by Andrew Victor <andrew at sanpeople.com>
++ * Ported to AVR32 and heavily modified by Espen Krangnes
++ * <ekrangnes at atmel.com>
++ *
++ * Copyright (C) 2006 Atmel Corporation
++ *
++ * Borrowed heavily from the original work by:
++ * Copyright (C) 2000 Philip Edelbrock <phil at stimpy.netroedge.com>
++ *
++ * Partialy rewriten by Karel Hojdar <cmkaho at seznam.cz>
++ * bugs removed, interrupt routine markedly rewritten
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License as published by
++ * the Free Software Foundation; either version 2 of the License, or
++ * (at your option) any later version.
++ */
++#undef VERBOSE_DEBUG
+
-+static ssize_t gpio_store_gpio_id(struct gpio_item *gpio,
-+ const char *page, size_t count)
-+{
-+ unsigned long id;
-+ char *p = (char *)page;
-+ ssize_t ret = -EINVAL;
++#include <linux/module.h>
++#include <linux/slab.h>
++#include <linux/i2c.h>
++#include <linux/init.h>
++#include <linux/clk.h>
++#include <linux/err.h>
++#include <linux/interrupt.h>
++#include <linux/platform_device.h>
++#include <linux/completion.h>
++#include <linux/io.h>
+
-+ id = simple_strtoul(p, &p, 0);
-+ if (!p || (*p && (*p != '\n')))
-+ return -EINVAL;
++#include "i2c-atmeltwi.h"
+
-+ /* Switching PIO is not allowed when live... */
-+ spin_lock(&gpio->lock);
-+ if (!gpio->enabled) {
-+ ret = -ENXIO;
-+ if (at32_gpio_port_is_valid(id)) {
-+ gpio->port = id;
-+ ret = count;
-+ }
-+ }
-+ spin_unlock(&gpio->lock);
++static unsigned int baudrate = 100 * 1000;
++module_param(baudrate, uint, S_IRUGO);
++MODULE_PARM_DESC(baudrate, "The TWI baudrate");
+
-+ return ret;
-+}
+
-+static ssize_t gpio_show_pin_mask(struct gpio_item *gpio, char *page)
-+{
-+ return sprintf(page, "0x%08x\n", gpio->pin_mask);
-+}
++struct atmel_twi {
++ void __iomem *regs;
++ struct i2c_adapter adapter;
++ struct clk *pclk;
++ struct completion comp;
++ u32 mask;
++ u8 *buf;
++ u16 len;
++ u16 acks_left;
++ int status;
++ unsigned int irq;
+
-+static ssize_t gpio_store_pin_mask(struct gpio_item *gpio,
-+ const char *page, size_t count)
++};
++#define to_atmel_twi(adap) container_of(adap, struct atmel_twi, adapter)
++
++/*
++ * (Re)Initialize the TWI hardware registers.
++ */
++static int twi_hwinit(struct atmel_twi *twi)
+{
-+ u32 new_mask;
-+ char *p = (char *)page;
-+ ssize_t ret = -EINVAL;
++ unsigned long cdiv, ckdiv = 0;
+
-+ new_mask = simple_strtoul(p, &p, 0);
-+ if (!p || (*p && (*p != '\n')))
-+ return -EINVAL;
++ /* REVISIT: wait till SCL is high before resetting; otherwise,
++ * some versions will wedge forever.
++ */
+
-+ /* Can't update the pin mask while live. */
-+ spin_lock(&gpio->lock);
-+ if (!gpio->enabled) {
-+ gpio->oe_mask &= new_mask;
-+ gpio->pin_mask = new_mask;
-+ ret = count;
-+ }
-+ spin_unlock(&gpio->lock);
-+
-+ return ret;
-+}
-+
-+static ssize_t gpio_show_oe_mask(struct gpio_item *gpio, char *page)
-+{
-+ return sprintf(page, "0x%08x\n", gpio->oe_mask);
-+}
-+
-+static ssize_t gpio_store_oe_mask(struct gpio_item *gpio,
-+ const char *page, size_t count)
-+{
-+ u32 mask;
-+ char *p = (char *)page;
-+ ssize_t ret = -EINVAL;
++ twi_writel(twi, IDR, ~0UL);
++ twi_writel(twi, CR, TWI_BIT(SWRST)); /*Reset peripheral*/
++ twi_readl(twi, SR);
+
-+ mask = simple_strtoul(p, &p, 0);
-+ if (!p || (*p && (*p != '\n')))
-+ return -EINVAL;
++ cdiv = (clk_get_rate(twi->pclk) / (2 * baudrate)) - 4;
+
-+ spin_lock(&gpio->lock);
-+ if (!gpio->enabled) {
-+ gpio->oe_mask = mask & gpio->pin_mask;
-+ ret = count;
++ while (cdiv > 255) {
++ ckdiv++;
++ cdiv = cdiv >> 1;
+ }
-+ spin_unlock(&gpio->lock);
+
-+ return ret;
-+}
++ /* REVISIT: there are various errata to consider re CDIV and CHDIV
++ * here, at least on at91 parts.
++ */
+
-+static ssize_t gpio_show_enabled(struct gpio_item *gpio, char *page)
-+{
-+ return sprintf(page, "%d\n", gpio->enabled);
++ if (ckdiv > 7)
++ return -EINVAL;
++ else
++ twi_writel(twi, CWGR, TWI_BF(CKDIV, ckdiv)
++ | TWI_BF(CHDIV, cdiv)
++ | TWI_BF(CLDIV, cdiv));
++ return 0;
+}
+
-+static ssize_t gpio_store_enabled(struct gpio_item *gpio,
-+ const char *page, size_t count)
++/*
++ * Waits for the i2c status register to set the specified bitmask
++ * Returns 0 if timed out ... ~100ms is much longer than the SMBus
++ * limit, but I2C has no limit at all.
++ */
++static int twi_complete(struct atmel_twi *twi, u32 mask)
+{
-+ char *p = (char *)page;
-+ int enabled;
-+ int ret;
++ int timeout = msecs_to_jiffies(100);
+
-+ enabled = simple_strtoul(p, &p, 0);
-+ if (!p || (*p && (*p != '\n')))
-+ return -EINVAL;
++ mask |= TWI_BIT(TXCOMP);
++ twi->mask = mask | TWI_BIT(NACK) | TWI_BIT(OVRE);
++ init_completion(&twi->comp);
+
-+ /* make it a boolean value */
-+ enabled = !!enabled;
++ twi_writel(twi, IER, mask);
+
-+ if (gpio->enabled == enabled)
-+ /* No change; do nothing. */
-+ return count;
++ if (!wait_for_completion_timeout(&twi->comp, timeout)) {
++ /* RESET TWI interface */
++ twi_writel(twi, CR, TWI_BIT(SWRST));
+
-+ BUG_ON(gpio->id >= GPIO_DEV_MAX);
++ /* Reinitialize TWI */
++ twi_hwinit(twi);
+
-+ if (!enabled) {
-+ class_device_unregister(gpio->gpio_dev);
-+ cdev_del(&gpio->char_dev);
-+ at32_deselect_pins(gpio->port, gpio->pin_mask);
-+ gpio->initialized = 0;
-+ } else {
-+ if (gpio->port < 0 || !gpio->pin_mask)
-+ return -ENODEV;
++ return -ETIMEDOUT;
+ }
++ return 0;
++}
+
-+ /* Disallow any updates to gpio_id or pin_mask */
-+ spin_lock(&gpio->lock);
-+ gpio->enabled = enabled;
-+ spin_unlock(&gpio->lock);
++/*
++ * Generic i2c master transfer entrypoint.
++ */
++static int twi_xfer(struct i2c_adapter *adap, struct i2c_msg *pmsg, int num)
++{
++ struct atmel_twi *twi = to_atmel_twi(adap);
++ int i;
+
-+ if (!enabled)
-+ return count;
++ dev_dbg(&adap->dev, "twi_xfer: processing %d messages:\n", num);
+
-+ /* Now, try to allocate the pins */
-+ ret = at32_select_gpio_pins(gpio->port, gpio->pin_mask, gpio->oe_mask);
-+ if (ret)
-+ goto err_alloc_pins;
++ twi->status = 0;
++ for (i = 0; i < num; i++, pmsg++) {
++ twi->len = pmsg->len;
++ twi->buf = pmsg->buf;
++ twi->acks_left = pmsg->len;
++ twi_writel(twi, MMR, TWI_BF(DADR, pmsg->addr) |
++ (pmsg->flags & I2C_M_RD ? TWI_BIT(MREAD) : 0));
++ twi_writel(twi, IADR, TWI_BF(IADR, pmsg->addr));
+
-+ gpio->initialized = 1;
++ dev_dbg(&adap->dev,
++ "#%d: %s %d byte%s %s dev 0x%02x\n",
++ i,
++ pmsg->flags & I2C_M_RD ? "reading" : "writing",
++ pmsg->len,
++ pmsg->len > 1 ? "s" : "",
++ pmsg->flags & I2C_M_RD ? "from" : "to", pmsg->addr);
+
-+ cdev_init(&gpio->char_dev, &gpio_dev_fops);
-+ gpio->char_dev.owner = THIS_MODULE;
-+ ret = cdev_add(&gpio->char_dev, MKDEV(MAJOR(gpio_devt), gpio->id), 1);
-+ if (ret < 0)
-+ goto err_cdev_add;
-+ gpio->gpio_dev = class_device_create(gpio_dev_class, NULL,
-+ MKDEV(MAJOR(gpio_devt), gpio->id),
-+ NULL,
-+ "gpio%d", gpio->id);
-+ if (IS_ERR(gpio->gpio_dev)) {
-+ printk(KERN_ERR "failed to create gpio%d\n", gpio->id);
-+ ret = PTR_ERR(gpio->gpio_dev);
-+ goto err_class_dev;
-+ }
++ /* enable */
++ twi_writel(twi, CR, TWI_BIT(MSEN));
+
-+ printk(KERN_INFO "created gpio%d (port%d/0x%08x) as (%d:%d)\n",
-+ gpio->id, gpio->port, gpio->pin_mask,
-+ MAJOR(gpio->gpio_dev->devt), MINOR(gpio->gpio_dev->devt));
++ if (pmsg->flags & I2C_M_RD) {
++ /* cleanup after previous RX overruns */
++ while (twi_readl(twi, SR) & TWI_BIT(RXRDY))
++ twi_readl(twi, RHR);
+
-+ return 0;
++ if (twi->len == 1)
++ twi_writel(twi, CR,
++ TWI_BIT(START) | TWI_BIT(STOP));
++ else
++ twi_writel(twi, CR, TWI_BIT(START));
+
-+err_class_dev:
-+ cdev_del(&gpio->char_dev);
-+err_cdev_add:
-+ at32_deselect_pins(gpio->port, gpio->pin_mask);
-+ gpio->initialized = 0;
-+err_alloc_pins:
-+ spin_lock(&gpio->lock);
-+ gpio->enabled = 0;
-+ spin_unlock(&gpio->lock);
++ if (twi_complete(twi, TWI_BIT(RXRDY)) == -ETIMEDOUT) {
++ dev_dbg(&adap->dev, "RX[%d] timeout. "
++ "Stopped with %d bytes left\n",
++ i, twi->acks_left);
++ return -ETIMEDOUT;
++ }
++ } else {
++ twi_writel(twi, THR, twi->buf[0]);
++ twi->acks_left--;
++ /* REVISIT: some chips don't start automagically:
++ * twi_writel(twi, CR, TWI_BIT(START));
++ */
++ if (twi_complete(twi, TWI_BIT(TXRDY)) == -ETIMEDOUT) {
++ dev_dbg(&adap->dev, "TX[%d] timeout. "
++ "Stopped with %d bytes left\n",
++ i, twi->acks_left);
++ return -ETIMEDOUT;
++ }
++ /* REVISIT: an erratum workaround may be needed here;
++ * see sam9261 "STOP not generated" (START either).
++ */
++ }
+
-+ return ret;
-+}
++ /* Disable TWI interface */
++ twi_writel(twi, CR, TWI_BIT(MSDIS));
+
-+static struct gpio_attribute gpio_item_attr_gpio_id = {
-+ .attr = {
-+ .ca_owner = THIS_MODULE,
-+ .ca_name = "gpio_id",
-+ .ca_mode = S_IRUGO | S_IWUSR,
-+ },
-+ .show = gpio_show_gpio_id,
-+ .store = gpio_store_gpio_id,
-+};
-+static struct gpio_attribute gpio_item_attr_pin_mask = {
-+ .attr = {
-+ .ca_owner = THIS_MODULE,
-+ .ca_name = "pin_mask",
-+ .ca_mode = S_IRUGO | S_IWUSR,
-+ },
-+ .show = gpio_show_pin_mask,
-+ .store = gpio_store_pin_mask,
-+};
-+static struct gpio_attribute gpio_item_attr_oe_mask = {
-+ .attr = {
-+ .ca_owner = THIS_MODULE,
-+ .ca_name = "oe_mask",
-+ .ca_mode = S_IRUGO | S_IWUSR,
-+ },
-+ .show = gpio_show_oe_mask,
-+ .store = gpio_store_oe_mask,
-+};
-+static struct gpio_attribute gpio_item_attr_enabled = {
-+ .attr = {
-+ .ca_owner = THIS_MODULE,
-+ .ca_name = "enabled",
-+ .ca_mode = S_IRUGO | S_IWUSR,
-+ },
-+ .show = gpio_show_enabled,
-+ .store = gpio_store_enabled,
-+};
++ if (twi->status)
++ return twi->status;
+
-+static struct configfs_attribute *gpio_item_attrs[] = {
-+ &gpio_item_attr_gpio_id.attr,
-+ &gpio_item_attr_pin_mask.attr,
-+ &gpio_item_attr_oe_mask.attr,
-+ &gpio_item_attr_enabled.attr,
-+ NULL,
-+};
++ /* WARNING: This driver lies about properly supporting
++ * repeated start, or it would *ALWAYS* return here. It
++ * has issued a STOP. Continuing is a false claim -- that
++ * a second (or third, etc.) message is part of the same
++ * "combined" (no STOPs between parts) message.
++ */
+
-+static ssize_t gpio_show_attr(struct config_item *item,
-+ struct configfs_attribute *attr,
-+ char *page)
-+{
-+ struct gpio_item *gpio_item = to_gpio_item(item);
-+ struct gpio_attribute *gpio_attr
-+ = container_of(attr, struct gpio_attribute, attr);
-+ ssize_t ret = 0;
++ } /* end cur msg */
+
-+ if (gpio_attr->show)
-+ ret = gpio_attr->show(gpio_item, page);
-+ return ret;
++ return i;
+}
+
-+static ssize_t gpio_store_attr(struct config_item *item,
-+ struct configfs_attribute *attr,
-+ const char *page, size_t count)
-+{
-+ struct gpio_item *gpio_item = to_gpio_item(item);
-+ struct gpio_attribute *gpio_attr
-+ = container_of(attr, struct gpio_attribute, attr);
-+ ssize_t ret = -EINVAL;
+
-+ if (gpio_attr->store)
-+ ret = gpio_attr->store(gpio_item, page, count);
-+ return ret;
-+}
-+
-+static void gpio_release(struct config_item *item)
-+{
-+ kfree(to_gpio_item(item));
-+}
-+
-+static struct configfs_item_operations gpio_item_ops = {
-+ .release = gpio_release,
-+ .show_attribute = gpio_show_attr,
-+ .store_attribute = gpio_store_attr,
-+};
-+
-+static struct config_item_type gpio_item_type = {
-+ .ct_item_ops = &gpio_item_ops,
-+ .ct_attrs = gpio_item_attrs,
-+ .ct_owner = THIS_MODULE,
-+};
-+
-+static struct config_item *gpio_make_item(struct config_group *group,
-+ const char *name)
++static irqreturn_t twi_interrupt(int irq, void *dev_id)
+{
-+ static int next_id;
-+ struct gpio_item *gpio;
++ struct atmel_twi *twi = dev_id;
++ int status = twi_readl(twi, SR);
+
-+ if (next_id >= GPIO_DEV_MAX)
-+ return NULL;
++ /* Save state for later debug prints */
++ int old_status = status;
+
-+ gpio = kzalloc(sizeof(struct gpio_item), GFP_KERNEL);
-+ if (!gpio)
-+ return NULL;
++ if (twi->mask & status) {
+
-+ gpio->id = next_id++;
-+ config_item_init_type_name(&gpio->item, name, &gpio_item_type);
-+ spin_lock_init(&gpio->lock);
-+ init_waitqueue_head(&gpio->change_wq);
++ status &= twi->mask;
+
-+ return &gpio->item;
-+}
++ if (status & TWI_BIT(RXRDY)) {
++ if ((status & TWI_BIT(OVRE)) && twi->acks_left) {
++ /* Note weakness in fault reporting model:
++ * we can't say "the first N of these data
++ * bytes are valid".
++ */
++ dev_err(&twi->adapter.dev,
++ "OVERRUN RX! %04x, lost %d\n",
++ old_status, twi->acks_left);
++ twi->acks_left = 0;
++ twi_writel(twi, CR, TWI_BIT(STOP));
++ twi->status = -EOVERFLOW;
++ } else if (twi->acks_left > 0) {
++ twi->buf[twi->len - twi->acks_left] =
++ twi_readl(twi, RHR);
++ twi->acks_left--;
++ }
++ if (status & TWI_BIT(TXCOMP))
++ goto done;
++ if (twi->acks_left == 1)
++ twi_writel(twi, CR, TWI_BIT(STOP));
+
-+static void gpio_drop_item(struct config_group *group,
-+ struct config_item *item)
-+{
-+ struct gpio_item *gpio = to_gpio_item(item);
++ } else if (status & (TWI_BIT(NACK) | TWI_BIT(TXCOMP))) {
++ goto done;
+
-+ spin_lock(&gpio->lock);
-+ if (gpio->enabled) {
-+ class_device_unregister(gpio->gpio_dev);
-+ cdev_del(&gpio->char_dev);
-+ }
++ } else if (status & TWI_BIT(TXRDY)) {
++ if (twi->acks_left > 0) {
++ twi_writel(twi, THR,
++ twi->buf[twi->len - twi->acks_left]);
++ twi->acks_left--;
++ } else
++ twi_writel(twi, CR, TWI_BIT(STOP));
++ }
+
-+ if (gpio->initialized) {
-+ at32_deselect_pins(gpio->port, gpio->pin_mask);
-+ gpio->initialized = 0;
-+ gpio->enabled = 0;
++ if (twi->acks_left == 0)
++ twi_writel(twi, IDR, ~TWI_BIT(TXCOMP));
+ }
-+ spin_unlock(&gpio->lock);
-+}
-+
-+static struct configfs_group_operations gpio_group_ops = {
-+ .make_item = gpio_make_item,
-+ .drop_item = gpio_drop_item,
-+};
+
-+static struct config_item_type gpio_group_type = {
-+ .ct_group_ops = &gpio_group_ops,
-+ .ct_owner = THIS_MODULE,
-+};
++ /* enabling this message helps trigger overruns/underruns ... */
++ dev_vdbg(&twi->adapter.dev,
++ "ISR: SR 0x%04X, mask 0x%04X, acks %i\n",
++ old_status,
++ twi->acks_left ? twi->mask : TWI_BIT(TXCOMP),
++ twi->acks_left);
+
-+static struct configfs_subsystem gpio_subsys = {
-+ .su_group = {
-+ .cg_item = {
-+ .ci_namebuf = "gpio",
-+ .ci_type = &gpio_group_type,
-+ },
-+ },
-+};
++ return IRQ_HANDLED;
+
-+static int __init gpio_dev_init(void)
-+{
-+ int err;
++done:
++ /* Note weak fault reporting model: we can't report how many
++ * bytes we sent before the NAK, or let upper layers choose
++ * whether to continue. The I2C stack doesn't allow that...
++ */
++ if (status & TWI_BIT(NACK)) {
++ dev_dbg(&twi->adapter.dev, "NACK received! %d to go\n",
++ twi->acks_left);
++ twi->status = -EPIPE;
+
-+ gpio_dev_class = class_create(THIS_MODULE, "gpio-dev");
-+ if (IS_ERR(gpio_dev_class)) {
-+ err = PTR_ERR(gpio_dev_class);
-+ goto err_class_create;
++ /* TX underrun morphs automagically into a premature STOP;
++ * we'll probably observe UVRE even when it's not documented.
++ */
++ } else if (twi->acks_left && (twi->mask & TWI_BIT(TXRDY))) {
++ dev_err(&twi->adapter.dev, "UNDERRUN TX! %04x, %d to go\n",
++ old_status, twi->acks_left);
++ twi->status = -ENOSR;
+ }
+
-+ err = alloc_chrdev_region(&gpio_devt, 0, GPIO_DEV_MAX, "gpio");
-+ if (err < 0)
-+ goto err_alloc_chrdev;
-+
-+ /* Configfs initialization */
-+ config_group_init(&gpio_subsys.su_group);
-+ mutex_init(&gpio_subsys.su_mutex);
-+ err = configfs_register_subsystem(&gpio_subsys);
-+ if (err)
-+ goto err_register_subsys;
++ twi_writel(twi, IDR, ~0UL);
++ complete(&twi->comp);
+
-+ return 0;
++ dev_dbg(&twi->adapter.dev, "ISR: SR 0x%04X, acks %i --> %d\n",
++ old_status, twi->acks_left, twi->status);
+
-+err_register_subsys:
-+ unregister_chrdev_region(gpio_devt, GPIO_DEV_MAX);
-+err_alloc_chrdev:
-+ class_destroy(gpio_dev_class);
-+err_class_create:
-+ printk(KERN_WARNING "Failed to initialize gpio /dev interface\n");
-+ return err;
++ return IRQ_HANDLED;
+}
-+late_initcall(gpio_dev_init);
---- a/arch/avr32/mach-at32ap/intc.c
-+++ b/arch/avr32/mach-at32ap/intc.c
-@@ -13,7 +13,6 @@
- #include <linux/irq.h>
- #include <linux/platform_device.h>
-
--#include <asm/intc.h>
- #include <asm/io.h>
-
- #include "intc.h"
---- a/arch/avr32/mach-at32ap/Kconfig
-+++ b/arch/avr32/mach-at32ap/Kconfig
-@@ -3,9 +3,9 @@
- menu "Atmel AVR32 AP options"
-
- choice
-- prompt "AT32AP7000 static memory bus width"
-- depends on CPU_AT32AP7000
-- default AP7000_16_BIT_SMC
-+ prompt "AT32AP700x static memory bus width"
-+ depends on CPU_AT32AP700X
-+ default AP700X_16_BIT_SMC
- help
- Define the width of the AP7000 external static memory interface.
- This is used to determine how to mangle the address and/or data
-@@ -15,17 +15,24 @@
- width for all chip selects, excluding the flash (which is using
- raw access and is thus not affected by any of this.)
-
--config AP7000_32_BIT_SMC
-+config AP700X_32_BIT_SMC
- bool "32 bit"
-
--config AP7000_16_BIT_SMC
-+config AP700X_16_BIT_SMC
- bool "16 bit"
-
--config AP7000_8_BIT_SMC
-+config AP700X_8_BIT_SMC
- bool "8 bit"
-
- endchoice
-
-+config GPIO_DEV
-+ bool "GPIO /dev interface"
-+ select CONFIGFS_FS
-+ default n
-+ help
-+ Say `Y' to enable a /dev interface to the GPIO pins.
+
- endmenu
-
- endif # PLATFORM_AT32AP
---- a/arch/avr32/mach-at32ap/Makefile
-+++ b/arch/avr32/mach-at32ap/Makefile
-@@ -1,4 +1,4 @@
- obj-y += at32ap.o clock.o intc.o extint.o pio.o hsmc.o
--obj-$(CONFIG_CPU_AT32AP7000) += at32ap7000.o
--obj-$(CONFIG_CPU_AT32AP7000) += time-tc.o
-+obj-$(CONFIG_CPU_AT32AP700X) += at32ap700x.o pm-at32ap700x.o
- obj-$(CONFIG_CPU_FREQ_AT32AP) += cpufreq.o
-+obj-$(CONFIG_GPIO_DEV) += gpio-dev.o
---- a/arch/avr32/mach-at32ap/pio.c
-+++ b/arch/avr32/mach-at32ap/pio.c
-@@ -162,6 +162,82 @@
- dump_stack();
- }
-
-+#ifdef CONFIG_GPIO_DEV
+
-+/* Gang allocators and accessors; used by the GPIO /dev driver */
-+int at32_gpio_port_is_valid(unsigned int port)
++/*
++ * Return list of supported functionality.
++ *
++ * NOTE: see warning above about repeated starts; this driver is falsely
++ * claiming to support "combined" transfers. The mid-message STOPs mean
++ * some slaves will never work with this driver. (Use i2c-gpio...)
++ */
++static u32 twi_func(struct i2c_adapter *adapter)
+{
-+ return port < MAX_NR_PIO_DEVICES && pio_dev[port].regs != NULL;
++ return (I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL)
++ & ~I2C_FUNC_SMBUS_QUICK;
+}
+
-+int at32_select_gpio_pins(unsigned int port, u32 pins, u32 oe_mask)
++static struct i2c_algorithm twi_algorithm = {
++ .master_xfer = twi_xfer,
++ .functionality = twi_func,
++};
++
++/*
++ * Main initialization routine.
++ */
++static int __init twi_probe(struct platform_device *pdev)
+{
-+ struct pio_device *pio;
-+ u32 old, new;
++ struct atmel_twi *twi;
++ struct resource *regs;
++ struct clk *pclk;
++ struct i2c_adapter *adapter;
++ int rc, irq;
+
-+ pio = &pio_dev[port];
-+ BUG_ON(port > ARRAY_SIZE(pio_dev) || !pio->regs || (oe_mask & ~pins));
++ regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
++ if (!regs)
++ return -ENXIO;
+
-+ /* Try to allocate the pins */
-+ do {
-+ old = pio->pinmux_mask;
-+ if (old & pins)
-+ return -EBUSY;
++ pclk = clk_get(&pdev->dev, "twi_pclk");
++ if (IS_ERR(pclk))
++ return PTR_ERR(pclk);
++ clk_enable(pclk);
+
-+ new = old | pins;
-+ } while (cmpxchg(&pio->pinmux_mask, old, new) != old);
++ rc = -ENOMEM;
++ twi = kzalloc(sizeof(struct atmel_twi), GFP_KERNEL);
++ if (!twi) {
++ dev_dbg(&pdev->dev, "can't allocate interface!\n");
++ goto err_alloc_twi;
++ }
+
-+ /* That went well, now configure the port */
-+ pio_writel(pio, OER, oe_mask);
-+ pio_writel(pio, PER, pins);
++ twi->pclk = pclk;
++ twi->regs = ioremap(regs->start, regs->end - regs->start + 1);
++ if (!twi->regs)
++ goto err_ioremap;
+
-+ return 0;
-+}
++ irq = platform_get_irq(pdev, 0);
++ rc = request_irq(irq, twi_interrupt, 0, "twi", twi);
++ if (rc) {
++ dev_dbg(&pdev->dev, "can't bind irq!\n");
++ goto err_irq;
++ }
++ twi->irq = irq;
+
-+void at32_deselect_pins(unsigned int port, u32 pins)
-+{
-+ struct pio_device *pio;
-+ u32 old, new;
++ rc = twi_hwinit(twi);
++ if (rc) {
++ dev_err(&pdev->dev, "Unable to set baudrate\n");
++ goto err_hw_init;
++ }
+
-+ pio = &pio_dev[port];
-+ BUG_ON(port > ARRAY_SIZE(pio_dev) || !pio->regs);
++ adapter = &twi->adapter;
++ sprintf(adapter->name, "TWI");
++ adapter->algo = &twi_algorithm;
++ adapter->class = I2C_CLASS_ALL;
++ adapter->nr = pdev->id;
++ adapter->dev.parent = &pdev->dev;
+
-+ /* Return to a "safe" mux configuration */
-+ pio_writel(pio, PUER, pins);
-+ pio_writel(pio, ODR, pins);
++ platform_set_drvdata(pdev, twi);
+
-+ /* Deallocate the pins */
-+ do {
-+ old = pio->pinmux_mask;
-+ new = old & ~pins;
-+ } while (cmpxchg(&pio->pinmux_mask, old, new) != old);
-+}
++ rc = i2c_add_numbered_adapter(adapter);
++ if (rc) {
++ dev_dbg(&pdev->dev, "Adapter %s registration failed\n",
++ adapter->name);
++ goto err_register;
++ }
+
-+u32 at32_gpio_get_value_multiple(unsigned int port, u32 pins)
-+{
-+ struct pio_device *pio;
++ dev_info(&pdev->dev,
++ "Atmel TWI/I2C adapter (baudrate %dk) at 0x%08lx.\n",
++ baudrate/1000, (unsigned long)regs->start);
+
-+ pio = &pio_dev[port];
-+ BUG_ON(port > ARRAY_SIZE(pio_dev) || !pio->regs);
++ return 0;
+
-+ return pio_readl(pio, PDSR) & pins;
++
++err_register:
++ platform_set_drvdata(pdev, NULL);
++
++err_hw_init:
++ free_irq(irq, twi);
++
++err_irq:
++ iounmap(twi->regs);
++
++err_ioremap:
++ kfree(twi);
++
++err_alloc_twi:
++ clk_disable(pclk);
++ clk_put(pclk);
++
++ return rc;
+}
+
-+void at32_gpio_set_value_multiple(unsigned int port, u32 value, u32 mask)
++static int __exit twi_remove(struct platform_device *pdev)
+{
-+ struct pio_device *pio;
++ struct atmel_twi *twi = platform_get_drvdata(pdev);
++ int res;
+
-+ pio = &pio_dev[port];
-+ BUG_ON(port > ARRAY_SIZE(pio_dev) || !pio->regs);
++ platform_set_drvdata(pdev, NULL);
++ res = i2c_del_adapter(&twi->adapter);
++ twi_writel(twi, CR, TWI_BIT(MSDIS));
++ iounmap(twi->regs);
++ clk_disable(twi->pclk);
++ clk_put(twi->pclk);
++ free_irq(twi->irq, twi);
++ kfree(twi);
+
-+ /* No atomic updates for now... */
-+ pio_writel(pio, CODR, ~value & mask);
-+ pio_writel(pio, SODR, value & mask);
++ return res;
+}
+
-+#endif /* CONFIG_GPIO_DEV */
++static struct platform_driver twi_driver = {
++ .remove = __exit_p(twi_remove),
++ .driver = {
++ .name = "atmel_twi",
++ .owner = THIS_MODULE,
++ },
++};
++
++static int __init atmel_twi_init(void)
++{
++ return platform_driver_probe(&twi_driver, twi_probe);
++}
++
++static void __exit atmel_twi_exit(void)
++{
++ platform_driver_unregister(&twi_driver);
++}
+
++module_init(atmel_twi_init);
++module_exit(atmel_twi_exit);
+
- /*--------------------------------------------------------------------------*/
-
- /* GPIO API */
---- /dev/null
-+++ b/arch/avr32/mach-at32ap/pm-at32ap700x.S
-@@ -0,0 +1,66 @@
++MODULE_AUTHOR("Espen Krangnes");
++MODULE_DESCRIPTION("I2C driver for Atmel TWI");
++MODULE_LICENSE("GPL");
+diff --exclude=.git -urN linux-2.6.25.6/drivers/i2c/busses/i2c-atmeltwi.h avr32-2.6/drivers/i2c/busses/i2c-atmeltwi.h
+--- linux-2.6.25.6/drivers/i2c/busses/i2c-atmeltwi.h 1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/drivers/i2c/busses/i2c-atmeltwi.h 2008-06-12 15:09:40.391816588 +0200
+@@ -0,0 +1,117 @@
+/*
-+ * Low-level Power Management code.
-+ *
-+ * Copyright (C) 2008 Atmel Corporation
-+ *
-+ * This program is free software; you can redistribute it and/or modify
-+ * it under the terms of the GNU General Public License version 2 as
-+ * published by the Free Software Foundation.
++ * Register definitions for the Atmel Two-Wire Interface
+ */
-+#include <asm/asm.h>
-+#include <asm/asm-offsets.h>
-+#include <asm/thread_info.h>
-+#include <asm/arch/pm.h>
+
-+ .section .bss, "wa", @nobits
-+ .global disable_idle_sleep
-+ .type disable_idle_sleep, @object
-+disable_idle_sleep:
-+ .int 4
-+ .size disable_idle_sleep, . - disable_idle_sleep
++#ifndef __ATMELTWI_H__
++#define __ATMELTWI_H__
+
-+ /* Keep this close to the irq handlers */
-+ .section .irq.text, "ax", @progbits
++/* TWI register offsets */
++#define TWI_CR 0x0000
++#define TWI_MMR 0x0004
++#define TWI_SMR 0x0008
++#define TWI_IADR 0x000c
++#define TWI_CWGR 0x0010
++#define TWI_SR 0x0020
++#define TWI_IER 0x0024
++#define TWI_IDR 0x0028
++#define TWI_IMR 0x002c
++#define TWI_RHR 0x0030
++#define TWI_THR 0x0034
+
-+ /*
-+ * void cpu_enter_idle(void)
-+ *
-+ * Put the CPU into "idle" mode, in which it will consume
-+ * significantly less power.
-+ *
-+ * If an interrupt comes along in the window between
-+ * unmask_interrupts and the sleep instruction below, the
-+ * interrupt code will adjust the return address so that we
-+ * never execute the sleep instruction. This is required
-+ * because the AP7000 doesn't unmask interrupts when entering
-+ * sleep modes; later CPUs may not need this workaround.
-+ */
-+ .global cpu_enter_idle
-+ .type cpu_enter_idle, @function
-+cpu_enter_idle:
-+ mask_interrupts
-+ get_thread_info r8
-+ ld.w r9, r8[TI_flags]
-+ bld r9, TIF_NEED_RESCHED
-+ brcs .Lret_from_sleep
-+ sbr r9, TIF_CPU_GOING_TO_SLEEP
-+ st.w r8[TI_flags], r9
-+ unmask_interrupts
-+ sleep CPU_SLEEP_IDLE
-+ .size cpu_idle_sleep, . - cpu_idle_sleep
++/* Bitfields in CR */
++#define TWI_START_OFFSET 0
++#define TWI_START_SIZE 1
++#define TWI_STOP_OFFSET 1
++#define TWI_STOP_SIZE 1
++#define TWI_MSEN_OFFSET 2
++#define TWI_MSEN_SIZE 1
++#define TWI_MSDIS_OFFSET 3
++#define TWI_MSDIS_SIZE 1
++#define TWI_SVEN_OFFSET 4
++#define TWI_SVEN_SIZE 1
++#define TWI_SVDIS_OFFSET 5
++#define TWI_SVDIS_SIZE 1
++#define TWI_SWRST_OFFSET 7
++#define TWI_SWRST_SIZE 1
+
-+ /*
-+ * Common return path for PM functions that don't run from
-+ * SRAM.
-+ */
-+ .global cpu_idle_skip_sleep
-+ .type cpu_idle_skip_sleep, @function
-+cpu_idle_skip_sleep:
-+ mask_interrupts
-+ ld.w r9, r8[TI_flags]
-+ cbr r9, TIF_CPU_GOING_TO_SLEEP
-+ st.w r8[TI_flags], r9
-+.Lret_from_sleep:
-+ unmask_interrupts
-+ retal r12
-+ .size cpu_idle_skip_sleep, . - cpu_idle_skip_sleep
---- a/arch/avr32/mach-at32ap/time-tc.c
-+++ /dev/null
-@@ -1,218 +0,0 @@
--/*
-- * Copyright (C) 2004-2007 Atmel Corporation
-- *
-- * Based on MIPS implementation arch/mips/kernel/time.c
-- * Copyright 2001 MontaVista Software Inc.
-- *
-- * This program is free software; you can redistribute it and/or modify
-- * it under the terms of the GNU General Public License version 2 as
-- * published by the Free Software Foundation.
-- */
--
--#include <linux/clk.h>
--#include <linux/clocksource.h>
--#include <linux/time.h>
--#include <linux/module.h>
--#include <linux/interrupt.h>
--#include <linux/irq.h>
--#include <linux/kernel_stat.h>
--#include <linux/errno.h>
--#include <linux/init.h>
--#include <linux/profile.h>
--#include <linux/sysdev.h>
--#include <linux/err.h>
--
--#include <asm/div64.h>
--#include <asm/sysreg.h>
--#include <asm/io.h>
--#include <asm/sections.h>
--
--#include <asm/arch/time.h>
--
--/* how many counter cycles in a jiffy? */
--static u32 cycles_per_jiffy;
--
--/* the count value for the next timer interrupt */
--static u32 expirelo;
--
--/* the I/O registers of the TC module */
--static void __iomem *ioregs;
--
--cycle_t read_cycle_count(void)
--{
-- return (cycle_t)timer_read(ioregs, 0, CV);
--}
--
--struct clocksource clocksource_avr32 = {
-- .name = "avr32",
-- .rating = 342,
-- .read = read_cycle_count,
-- .mask = CLOCKSOURCE_MASK(16),
-- .shift = 16,
-- .flags = CLOCK_SOURCE_IS_CONTINUOUS,
--};
--
--static void avr32_timer_ack(void)
--{
-- u16 count = expirelo;
--
-- /* Ack this timer interrupt and set the next one, use a u16
-- * variable so it will wrap around correctly */
-- count += cycles_per_jiffy;
-- expirelo = count;
-- timer_write(ioregs, 0, RC, expirelo);
--
-- /* Check to see if we have missed any timer interrupts */
-- count = timer_read(ioregs, 0, CV);
-- if ((count - expirelo) < 0x7fff) {
-- expirelo = count + cycles_per_jiffy;
-- timer_write(ioregs, 0, RC, expirelo);
-- }
--}
--
--u32 avr32_hpt_read(void)
--{
-- return timer_read(ioregs, 0, CV);
--}
--
--static int avr32_timer_calc_div_and_set_jiffies(struct clk *pclk)
--{
-- unsigned int cycles_max = (clocksource_avr32.mask + 1) / 2;
-- unsigned int divs[] = { 4, 8, 16, 32 };
-- int divs_size = ARRAY_SIZE(divs);
-- int i = 0;
-- unsigned long count_hz;
-- unsigned long shift;
-- unsigned long mult;
-- int clock_div = -1;
-- u64 tmp;
--
-- shift = clocksource_avr32.shift;
--
-- do {
-- count_hz = clk_get_rate(pclk) / divs[i];
-- mult = clocksource_hz2mult(count_hz, shift);
-- clocksource_avr32.mult = mult;
--
-- tmp = TICK_NSEC;
-- tmp <<= shift;
-- tmp += mult / 2;
-- do_div(tmp, mult);
--
-- cycles_per_jiffy = tmp;
-- } while (cycles_per_jiffy > cycles_max && ++i < divs_size);
--
-- clock_div = i + 1;
--
-- if (clock_div > divs_size) {
-- pr_debug("timer: could not calculate clock divider\n");
-- return -EFAULT;
-- }
--
-- /* Set the clock divider */
-- timer_write(ioregs, 0, CMR, TIMER_BF(CMR_TCCLKS, clock_div));
--
-- return 0;
--}
--
--int avr32_hpt_init(unsigned int count)
--{
-- struct resource *regs;
-- struct clk *pclk;
-- int irq = -1;
-- int ret = 0;
--
-- ret = -ENXIO;
--
-- irq = platform_get_irq(&at32_systc0_device, 0);
-- if (irq < 0) {
-- pr_debug("timer: could not get irq\n");
-- goto out_error;
-- }
--
-- pclk = clk_get(&at32_systc0_device.dev, "pclk");
-- if (IS_ERR(pclk)) {
-- pr_debug("timer: could not get clk: %ld\n", PTR_ERR(pclk));
-- goto out_error;
-- }
-- clk_enable(pclk);
--
-- regs = platform_get_resource(&at32_systc0_device, IORESOURCE_MEM, 0);
-- if (!regs) {
-- pr_debug("timer: could not get resource\n");
-- goto out_error_clk;
-- }
--
-- ioregs = ioremap(regs->start, regs->end - regs->start + 1);
-- if (!ioregs) {
-- pr_debug("timer: could not get ioregs\n");
-- goto out_error_clk;
-- }
--
-- ret = avr32_timer_calc_div_and_set_jiffies(pclk);
-- if (ret)
-- goto out_error_io;
--
-- ret = setup_irq(irq, &timer_irqaction);
-- if (ret) {
-- pr_debug("timer: could not request irq %d: %d\n",
-- irq, ret);
-- goto out_error_io;
-- }
--
-- expirelo = (timer_read(ioregs, 0, CV) / cycles_per_jiffy + 1)
-- * cycles_per_jiffy;
--
-- /* Enable clock and interrupts on RC compare */
-- timer_write(ioregs, 0, CCR, TIMER_BIT(CCR_CLKEN));
-- timer_write(ioregs, 0, IER, TIMER_BIT(IER_CPCS));
-- /* Set cycles to first interrupt */
-- timer_write(ioregs, 0, RC, expirelo);
--
-- printk(KERN_INFO "timer: AT32AP system timer/counter at 0x%p irq %d\n",
-- ioregs, irq);
--
-- return 0;
--
--out_error_io:
-- iounmap(ioregs);
--out_error_clk:
-- clk_put(pclk);
--out_error:
-- return ret;
--}
--
--int avr32_hpt_start(void)
--{
-- timer_write(ioregs, 0, CCR, TIMER_BIT(CCR_SWTRG));
-- return 0;
--}
--
--irqreturn_t timer_interrupt(int irq, void *dev_id)
--{
-- unsigned int sr = timer_read(ioregs, 0, SR);
--
-- if (sr & TIMER_BIT(SR_CPCS)) {
-- /* ack timer interrupt and try to set next interrupt */
-- avr32_timer_ack();
--
-- /*
-- * Call the generic timer interrupt handler
-- */
-- write_seqlock(&xtime_lock);
-- do_timer(1);
-- write_sequnlock(&xtime_lock);
--
-- /*
-- * In UP mode, we call local_timer_interrupt() to do profiling
-- * and process accounting.
-- *
-- * SMP is not supported yet.
-- */
-- local_timer_interrupt(irq, dev_id);
--
-- return IRQ_HANDLED;
-- }
--
-- return IRQ_NONE;
--}
---- a/arch/avr32/Makefile
-+++ b/arch/avr32/Makefile
-@@ -16,7 +16,7 @@
- CFLAGS_MODULE += -mno-relax
- LDFLAGS_vmlinux += --relax
-
--cpuflags-$(CONFIG_CPU_AT32AP7000) += -mcpu=ap7000
-+cpuflags-$(CONFIG_PLATFORM_AT32AP) += -march=ap
-
- KBUILD_CFLAGS += $(cpuflags-y)
- KBUILD_AFLAGS += $(cpuflags-y)
-@@ -31,6 +31,8 @@
- core-$(CONFIG_LOADER_U_BOOT) += arch/avr32/boot/u-boot/
- core-y += arch/avr32/kernel/
- core-y += arch/avr32/mm/
-+drivers-$(CONFIG_OPROFILE) += arch/avr32/oprofile/
-+drivers-y += arch/avr32/drivers/
- libs-y += arch/avr32/lib/
++/* Bitfields in MMR */
++#define TWI_IADRSZ_OFFSET 8
++#define TWI_IADRSZ_SIZE 2
++#define TWI_MREAD_OFFSET 12
++#define TWI_MREAD_SIZE 1
++#define TWI_DADR_OFFSET 16
++#define TWI_DADR_SIZE 7
++
++/* Bitfields in SMR */
++#define TWI_SADR_OFFSET 16
++#define TWI_SADR_SIZE 7
++
++/* Bitfields in IADR */
++#define TWI_IADR_OFFSET 0
++#define TWI_IADR_SIZE 24
++
++/* Bitfields in CWGR */
++#define TWI_CLDIV_OFFSET 0
++#define TWI_CLDIV_SIZE 8
++#define TWI_CHDIV_OFFSET 8
++#define TWI_CHDIV_SIZE 8
++#define TWI_CKDIV_OFFSET 16
++#define TWI_CKDIV_SIZE 3
++
++/* Bitfields in SR */
++#define TWI_TXCOMP_OFFSET 0
++#define TWI_TXCOMP_SIZE 1
++#define TWI_RXRDY_OFFSET 1
++#define TWI_RXRDY_SIZE 1
++#define TWI_TXRDY_OFFSET 2
++#define TWI_TXRDY_SIZE 1
++#define TWI_SVDIR_OFFSET 3
++#define TWI_SVDIR_SIZE 1
++#define TWI_SVACC_OFFSET 4
++#define TWI_SVACC_SIZE 1
++#define TWI_GCACC_OFFSET 5
++#define TWI_GCACC_SIZE 1
++#define TWI_OVRE_OFFSET 6
++#define TWI_OVRE_SIZE 1
++#define TWI_UNRE_OFFSET 7
++#define TWI_UNRE_SIZE 1
++#define TWI_NACK_OFFSET 8
++#define TWI_NACK_SIZE 1
++#define TWI_ARBLST_OFFSET 9
++#define TWI_ARBLST_SIZE 1
++
++/* Bitfields in RHR */
++#define TWI_RXDATA_OFFSET 0
++#define TWI_RXDATA_SIZE 8
++
++/* Bitfields in THR */
++#define TWI_TXDATA_OFFSET 0
++#define TWI_TXDATA_SIZE 8
++
++/* Constants for IADRSZ */
++#define TWI_IADRSZ_NO_ADDR 0
++#define TWI_IADRSZ_ONE_BYTE 1
++#define TWI_IADRSZ_TWO_BYTES 2
++#define TWI_IADRSZ_THREE_BYTES 3
++
++/* Bit manipulation macros */
++#define TWI_BIT(name) \
++ (1 << TWI_##name##_OFFSET)
++#define TWI_BF(name, value) \
++ (((value) & ((1 << TWI_##name##_SIZE) - 1)) \
++ << TWI_##name##_OFFSET)
++#define TWI_BFEXT(name, value) \
++ (((value) >> TWI_##name##_OFFSET) \
++ & ((1 << TWI_##name##_SIZE) - 1))
++#define TWI_BFINS(name, value, old) \
++ (((old) & ~(((1 << TWI_##name##_SIZE) - 1) \
++ << TWI_##name##_OFFSET)) \
++ | TWI_BF(name, (value)))
++
++/* Register access macros */
++#define twi_readl(port, reg) \
++ __raw_readl((port)->regs + TWI_##reg)
++#define twi_writel(port, reg, value) \
++ __raw_writel((value), (port)->regs + TWI_##reg)
++
++#endif /* __ATMELTWI_H__ */
+diff --exclude=.git -urN linux-2.6.25.6/drivers/i2c/busses/Kconfig avr32-2.6/drivers/i2c/busses/Kconfig
+--- linux-2.6.25.6/drivers/i2c/busses/Kconfig 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/i2c/busses/Kconfig 2008-06-12 15:09:40.383816128 +0200
+@@ -88,6 +88,14 @@
+ to support combined I2C messages. Use the i2c-gpio driver
+ unless your system can cope with those limitations.
- archincdir-$(CONFIG_PLATFORM_AT32AP) := arch-at32ap
---- a/arch/avr32/mm/dma-coherent.c
-+++ b/arch/avr32/mm/dma-coherent.c
-@@ -41,6 +41,13 @@
- struct page *page, *free, *end;
- int order;
-
-+ /* Following is a work-around (a.k.a. hack) to prevent pages
-+ * with __GFP_COMP being passed to split_page() which cannot
-+ * handle them. The real problem is that this flag probably
-+ * should be 0 on AVR32 as it is not supported on this
-+ * platform--see CONFIG_HUGETLB_PAGE. */
-+ gfp &= ~(__GFP_COMP);
-+
- size = PAGE_ALIGN(size);
- order = get_order(size);
-
---- a/arch/avr32/mm/fault.c
-+++ b/arch/avr32/mm/fault.c
-@@ -189,6 +189,8 @@
-
- page = sysreg_read(PTBR);
- printk(KERN_ALERT "ptbr = %08lx", page);
-+ if (address >= TASK_SIZE)
-+ page = (unsigned long)swapper_pg_dir;
- if (page) {
- page = ((unsigned long *)page)[address >> 22];
- printk(" pgd = %08lx", page);
---- a/arch/avr32/mm/tlb.c
-+++ b/arch/avr32/mm/tlb.c
-@@ -348,7 +348,7 @@
- return 0;
- }
++config I2C_ATMELTWI
++ tristate "Atmel Two-Wire Interface (TWI)"
++ depends on I2C && (ARCH_AT91 || PLATFORM_AT32AP)
++ help
++ Atmel on-chip TWI controller. Say Y if you have an AT32 or
++ AT91-based device and want to use its built-in TWI
++ functionality.
++
+ config I2C_AU1550
+ tristate "Au1550/Au1200 SMBus interface"
+ depends on SOC_AU1550 || SOC_AU1200
+diff --exclude=.git -urN linux-2.6.25.6/drivers/i2c/busses/Makefile avr32-2.6/drivers/i2c/busses/Makefile
+--- linux-2.6.25.6/drivers/i2c/busses/Makefile 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/i2c/busses/Makefile 2008-06-12 15:09:40.383816128 +0200
+@@ -52,6 +52,7 @@
+ obj-$(CONFIG_I2C_VOODOO3) += i2c-voodoo3.o
+ obj-$(CONFIG_SCx200_ACB) += scx200_acb.o
+ obj-$(CONFIG_SCx200_I2C) += scx200_i2c.o
++obj-$(CONFIG_I2C_ATMELTWI) += i2c-atmeltwi.o
--static struct seq_operations tlb_ops = {
-+static const struct seq_operations tlb_ops = {
- .start = tlb_start,
- .next = tlb_next,
- .stop = tlb_stop,
---- /dev/null
-+++ b/arch/avr32/oprofile/Makefile
-@@ -0,0 +1,8 @@
-+obj-$(CONFIG_OPROFILE) += oprofile.o
-+
-+oprofile-y := $(addprefix ../../../drivers/oprofile/, \
-+ oprof.o cpu_buffer.o buffer_sync.o \
-+ event_buffer.o oprofile_files.o \
-+ oprofilefs.o oprofile_stats.o \
-+ timer_int.o)
-+oprofile-y += op_model_avr32.o
---- /dev/null
-+++ b/arch/avr32/oprofile/op_model_avr32.c
-@@ -0,0 +1,234 @@
+ ifeq ($(CONFIG_I2C_DEBUG_BUS),y)
+ EXTRA_CFLAGS += -DDEBUG
+diff --exclude=.git -urN linux-2.6.25.6/drivers/input/serio/at32psif.c avr32-2.6/drivers/input/serio/at32psif.c
+--- linux-2.6.25.6/drivers/input/serio/at32psif.c 1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/drivers/input/serio/at32psif.c 2008-06-12 15:09:40.619816021 +0200
+@@ -0,0 +1,351 @@
++/*
++ * Copyright (C) 2007 Atmel Corporation
++ *
++ * Driver for the AT32AP700X PS/2 controller (PSIF).
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published
++ * by the Free Software Foundation.
++ */
++#include <linux/kernel.h>
++#include <linux/module.h>
++#include <linux/device.h>
++#include <linux/init.h>
++#include <linux/serio.h>
++#include <linux/timer.h>
++#include <linux/interrupt.h>
++#include <linux/err.h>
++#include <linux/io.h>
++#include <linux/clk.h>
++#include <linux/platform_device.h>
++
++#include "at32psif.h"
++
++#define PSIF_BUF_SIZE 16
++
++#define ring_is_empty(_psif) (_psif->head == _psif->tail)
++#define ring_next_head(_psif) ((_psif->head + 1) & (PSIF_BUF_SIZE - 1))
++#define ring_next_tail(_psif) ((_psif->tail + 1) & (PSIF_BUF_SIZE - 1))
++
++struct psif {
++ struct platform_device *pdev;
++ struct clk *pclk;
++ struct serio *io;
++ struct timer_list tx_timer;
++ void __iomem *regs;
++ unsigned int irq;
++ unsigned int open;
++ /* Prevent concurrent writes to circular buffer. */
++ spinlock_t lock;
++ unsigned int head;
++ unsigned int tail;
++ unsigned char buffer[PSIF_BUF_SIZE];
++};
++
++static irqreturn_t psif_interrupt(int irq, void *_ptr)
++{
++ struct psif *psif = _ptr;
++ int retval = IRQ_NONE;
++ unsigned int io_flags = 0;
++ unsigned long status;
++
++ status = psif_readl(psif, SR);
++
++ if (status & PSIF_BIT(RXRDY)) {
++ unsigned char val = (unsigned char) psif_readl(psif, RHR);
++
++ if (status & PSIF_BIT(PARITY))
++ io_flags |= SERIO_PARITY;
++ if (status & PSIF_BIT(OVRUN))
++ dev_err(&psif->pdev->dev, "overrun read error\n");
++
++ serio_interrupt(psif->io, val, io_flags);
++
++ retval = IRQ_HANDLED;
++ }
++
++ spin_lock(&psif->lock);
++
++ if (status & PSIF_BIT(TXEMPTY)) {
++ if (status & PSIF_BIT(NACK))
++ dev_err(&psif->pdev->dev, "NACK error\n");
++
++ psif_writel(psif, IDR, PSIF_BIT(TXEMPTY));
++
++ if (!ring_is_empty(psif))
++ mod_timer(&psif->tx_timer,
++ jiffies + msecs_to_jiffies(1));
++
++ retval = IRQ_HANDLED;
++ }
++
++ spin_unlock(&psif->lock);
++
++ return retval;
++}
++
++static void psif_transmit_data(unsigned long data)
++{
++ struct psif *psif = (struct psif *)data;
++ unsigned long flags;
++
++ spin_lock_irqsave(&psif->lock, flags);
++
++ psif_writel(psif, THR, psif->buffer[psif->tail]);
++ psif->tail = ring_next_tail(psif);
++
++ if (!ring_is_empty(psif))
++ psif_writel(psif, IER, PSIF_BIT(TXEMPTY));
++
++ spin_unlock_irqrestore(&psif->lock, flags);
++}
++
++static int psif_write(struct serio *io, unsigned char val)
++{
++ struct psif *psif = io->port_data;
++ unsigned long flags;
++ unsigned int head;
++
++ spin_lock_irqsave(&psif->lock, flags);
++
++ head = ring_next_head(psif);
++
++ if (head != psif->tail) {
++ psif->buffer[psif->head] = val;
++ psif->head = head;
++ } else {
++ dev_err(&psif->pdev->dev, "underrun write error\n");
++ }
++
++ spin_unlock_irqrestore(&psif->lock, flags);
++
++ /* Make sure TXEMPTY interrupt is enabled. */
++ psif_writel(psif, IER, PSIF_BIT(TXEMPTY));
++
++ return 0;
++}
++
++static int psif_open(struct serio *io)
++{
++ struct psif *psif = io->port_data;
++ int retval;
++
++ retval = clk_enable(psif->pclk);
++ if (retval)
++ goto out;
++
++ psif_writel(psif, CR, PSIF_BIT(CR_TXEN) | PSIF_BIT(CR_RXEN));
++ psif_writel(psif, IER, PSIF_BIT(RXRDY));
++
++ psif->open = 1;
++out:
++ return retval;
++}
++
++static void psif_close(struct serio *io)
++{
++ struct psif *psif = io->port_data;
++
++ psif->open = 0;
++
++ psif_writel(psif, IDR, ~0UL);
++ psif_writel(psif, CR, PSIF_BIT(CR_TXDIS) | PSIF_BIT(CR_RXDIS));
++
++ clk_disable(psif->pclk);
++}
++
++static void psif_set_prescaler(struct psif *psif)
++{
++ unsigned long prscv;
++ unsigned long rate = clk_get_rate(psif->pclk);
++
++ /* PRSCV = Pulse length (100 us) * PSIF module frequency. */
++ prscv = 100 * (rate / 1000000UL);
++
++ if (prscv > ((1<<PSIF_PSR_PRSCV_SIZE) - 1)) {
++ prscv = (1<<PSIF_PSR_PRSCV_SIZE) - 1;
++ dev_dbg(&psif->pdev->dev, "pclk too fast, "
++ "prescaler set to max\n");
++ }
++
++ clk_enable(psif->pclk);
++ psif_writel(psif, PSR, prscv);
++ clk_disable(psif->pclk);
++}
++
++static int __init psif_probe(struct platform_device *pdev)
++{
++ struct resource *regs;
++ struct psif *psif;
++ struct serio *io;
++ struct clk *pclk;
++ int irq;
++ int ret;
++
++ psif = kzalloc(sizeof(struct psif), GFP_KERNEL);
++ if (!psif) {
++ dev_dbg(&pdev->dev, "out of memory\n");
++ ret = -ENOMEM;
++ goto out;
++ }
++ psif->pdev = pdev;
++
++ io = kzalloc(sizeof(struct serio), GFP_KERNEL);
++ if (!io) {
++ dev_dbg(&pdev->dev, "out of memory\n");
++ ret = -ENOMEM;
++ goto out_free_psif;
++ }
++ psif->io = io;
++
++ regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
++ if (!regs) {
++ dev_dbg(&pdev->dev, "no mmio resources defined\n");
++ ret = -ENOMEM;
++ goto out_free_io;
++ }
++
++ psif->regs = ioremap(regs->start, regs->end - regs->start + 1);
++ if (!psif->regs) {
++ ret = -ENOMEM;
++ dev_dbg(&pdev->dev, "could not map I/O memory\n");
++ goto out_free_io;
++ }
++
++ pclk = clk_get(&pdev->dev, "pclk");
++ if (IS_ERR(pclk)) {
++ dev_dbg(&pdev->dev, "could not get peripheral clock\n");
++ ret = PTR_ERR(pclk);
++ goto out_iounmap;
++ }
++ psif->pclk = pclk;
++
++ /* Reset the PSIF to enter at a known state. */
++ ret = clk_enable(pclk);
++ if (ret) {
++ dev_dbg(&pdev->dev, "could not enable pclk\n");
++ goto out_put_clk;
++ }
++ psif_writel(psif, CR, PSIF_BIT(CR_SWRST));
++ clk_disable(pclk);
++
++ setup_timer(&psif->tx_timer, psif_transmit_data, (unsigned long)psif);
++
++ irq = platform_get_irq(pdev, 0);
++ if (irq < 0) {
++ dev_dbg(&pdev->dev, "could not get irq\n");
++ ret = -ENXIO;
++ goto out_put_clk;
++ }
++ ret = request_irq(irq, psif_interrupt, IRQF_SHARED, "at32psif", psif);
++ if (ret) {
++ dev_dbg(&pdev->dev, "could not request irq %d\n", irq);
++ goto out_put_clk;
++ }
++ psif->irq = irq;
++
++ io->id.type = SERIO_8042;
++ io->write = psif_write;
++ io->open = psif_open;
++ io->close = psif_close;
++ strlcpy(io->name, pdev->dev.bus_id, sizeof(io->name));
++ strlcpy(io->phys, pdev->dev.bus_id, sizeof(io->phys));
++ io->port_data = psif;
++ io->dev.parent = &pdev->dev;
++
++ psif_set_prescaler(psif);
++
++ spin_lock_init(&psif->lock);
++ serio_register_port(psif->io);
++ platform_set_drvdata(pdev, psif);
++
++ dev_info(&pdev->dev, "Atmel AVR32 PSIF PS/2 driver on 0x%08x irq %d\n",
++ (int)psif->regs, psif->irq);
++
++ return 0;
++
++out_put_clk:
++ clk_put(psif->pclk);
++out_iounmap:
++ iounmap(psif->regs);
++out_free_io:
++ kfree(io);
++out_free_psif:
++ kfree(psif);
++out:
++ return ret;
++}
++
++static int __exit psif_remove(struct platform_device *pdev)
++{
++ struct psif *psif = platform_get_drvdata(pdev);
++
++ psif_writel(psif, IDR, ~0UL);
++ psif_writel(psif, CR, PSIF_BIT(CR_TXDIS) | PSIF_BIT(CR_RXDIS));
++
++ serio_unregister_port(psif->io);
++ iounmap(psif->regs);
++ free_irq(psif->irq, psif);
++ clk_put(psif->pclk);
++ kfree(psif);
++
++ platform_set_drvdata(pdev, NULL);
++
++ return 0;
++}
++
++#ifdef CONFIG_PM
++static int psif_suspend(struct platform_device *pdev, pm_message_t state)
++{
++ struct psif *psif = platform_get_drvdata(pdev);
++
++ if (psif->open) {
++ psif_writel(psif, CR, PSIF_BIT(CR_RXDIS) | PSIF_BIT(CR_TXDIS));
++ clk_disable(psif->pclk);
++ }
++
++ return 0;
++}
++
++static int psif_resume(struct platform_device *pdev)
++{
++ struct psif *psif = platform_get_drvdata(pdev);
++
++ if (psif->open) {
++ clk_enable(psif->pclk);
++ psif_set_prescaler(psif);
++ psif_writel(psif, CR, PSIF_BIT(CR_RXEN) | PSIF_BIT(CR_TXEN));
++ }
++
++ return 0;
++}
++#else
++#define psif_suspend NULL
++#define psif_resume NULL
++#endif
++
++static struct platform_driver psif_driver = {
++ .remove = __exit_p(psif_remove),
++ .driver = {
++ .name = "atmel_psif",
++ },
++ .suspend = psif_suspend,
++ .resume = psif_resume,
++};
++
++static int __init psif_init(void)
++{
++ return platform_driver_probe(&psif_driver, psif_probe);
++}
++
++static void __exit psif_exit(void)
++{
++ platform_driver_unregister(&psif_driver);
++}
++
++module_init(psif_init);
++module_exit(psif_exit);
++
++MODULE_AUTHOR("Hans-Christian Egtvedt <hcegtvedt@atmel.com>");
++MODULE_DESCRIPTION("Atmel AVR32 PSIF PS/2 driver");
++MODULE_LICENSE("GPL");
+diff --exclude=.git -urN linux-2.6.25.6/drivers/input/serio/at32psif.h avr32-2.6/drivers/input/serio/at32psif.h
+--- linux-2.6.25.6/drivers/input/serio/at32psif.h 1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/drivers/input/serio/at32psif.h 2008-06-12 15:09:40.619816021 +0200
+@@ -0,0 +1,82 @@
++/*
++ * Copyright (C) 2007 Atmel Corporation
++ *
++ * Driver for the AT32AP700X PS/2 controller (PSIF).
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published
++ * by the Free Software Foundation.
++ */
++
++#ifndef _AT32PSIF_H
++#define _AT32PSIF_H
++
++/* PSIF register offsets */
++#define PSIF_CR 0x00
++#define PSIF_RHR 0x04
++#define PSIF_THR 0x08
++#define PSIF_SR 0x10
++#define PSIF_IER 0x14
++#define PSIF_IDR 0x18
++#define PSIF_IMR 0x1c
++#define PSIF_PSR 0x24
++
++/* Bitfields in control register. */
++#define PSIF_CR_RXDIS_OFFSET 1
++#define PSIF_CR_RXDIS_SIZE 1
++#define PSIF_CR_RXEN_OFFSET 0
++#define PSIF_CR_RXEN_SIZE 1
++#define PSIF_CR_SWRST_OFFSET 15
++#define PSIF_CR_SWRST_SIZE 1
++#define PSIF_CR_TXDIS_OFFSET 9
++#define PSIF_CR_TXDIS_SIZE 1
++#define PSIF_CR_TXEN_OFFSET 8
++#define PSIF_CR_TXEN_SIZE 1
++
++/* Bitfields in interrupt disable, enable, mask and status register. */
++#define PSIF_NACK_OFFSET 8
++#define PSIF_NACK_SIZE 1
++#define PSIF_OVRUN_OFFSET 5
++#define PSIF_OVRUN_SIZE 1
++#define PSIF_PARITY_OFFSET 9
++#define PSIF_PARITY_SIZE 1
++#define PSIF_RXRDY_OFFSET 4
++#define PSIF_RXRDY_SIZE 1
++#define PSIF_TXEMPTY_OFFSET 1
++#define PSIF_TXEMPTY_SIZE 1
++#define PSIF_TXRDY_OFFSET 0
++#define PSIF_TXRDY_SIZE 1
++
++/* Bitfields in prescale register. */
++#define PSIF_PSR_PRSCV_OFFSET 0
++#define PSIF_PSR_PRSCV_SIZE 12
++
++/* Bitfields in receive hold register. */
++#define PSIF_RHR_RXDATA_OFFSET 0
++#define PSIF_RHR_RXDATA_SIZE 8
++
++/* Bitfields in transmit hold register. */
++#define PSIF_THR_TXDATA_OFFSET 0
++#define PSIF_THR_TXDATA_SIZE 8
++
++/* Bit manipulation macros */
++#define PSIF_BIT(name) \
++ (1 << PSIF_##name##_OFFSET)
++#define PSIF_BF(name, value) \
++ (((value) & ((1 << PSIF_##name##_SIZE) - 1)) \
++ << PSIF_##name##_OFFSET)
++#define PSIF_BFEXT(name, value)\
++ (((value) >> PSIF_##name##_OFFSET) \
++ & ((1 << PSIF_##name##_SIZE) - 1))
++#define PSIF_BFINS(name, value, old) \
++ (((old) & ~(((1 << PSIF_##name##_SIZE) - 1) \
++ << PSIF_##name##_OFFSET)) \
++ | PSIF_BF(name, value))
++
++/* Register access macros */
++#define psif_readl(port, reg) \
++ __raw_readl((port)->regs + PSIF_##reg)
++#define psif_writel(port, reg, value) \
++ __raw_writel((value), (port)->regs + PSIF_##reg)
++
++#endif /* _AT32PSIF_H */
+diff --exclude=.git -urN linux-2.6.25.6/drivers/input/serio/Kconfig avr32-2.6/drivers/input/serio/Kconfig
+--- linux-2.6.25.6/drivers/input/serio/Kconfig 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/input/serio/Kconfig 2008-06-12 15:09:40.615815791 +0200
+@@ -88,6 +88,17 @@
+ To compile this driver as a module, choose M here: the
+ module will be called rpckbd.
+
++config SERIO_AT32PSIF
++ tristate "AVR32 PSIF PS/2 keyboard and mouse controller"
++ depends on AVR32
++ default n
++ help
++ Say Y here if you want to use the PSIF peripheral on AVR32 devices
++ and connect a PS/2 keyboard and/or mouse to it.
++
++ To compile this driver as a module, choose M here: the module will
++ be called at32psif.
++
+ config SERIO_AMBAKMI
+ tristate "AMBA KMI keyboard controller"
+ depends on ARM_AMBA
+diff --exclude=.git -urN linux-2.6.25.6/drivers/input/serio/Makefile avr32-2.6/drivers/input/serio/Makefile
+--- linux-2.6.25.6/drivers/input/serio/Makefile 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/input/serio/Makefile 2008-06-12 15:03:58.919815686 +0200
+@@ -12,6 +12,7 @@
+ obj-$(CONFIG_SERIO_RPCKBD) += rpckbd.o
+ obj-$(CONFIG_SERIO_SA1111) += sa1111ps2.o
+ obj-$(CONFIG_SERIO_AMBAKMI) += ambakmi.o
++obj-$(CONFIG_SERIO_AT32PSIF) += at32psif.o
+ obj-$(CONFIG_SERIO_Q40KBD) += q40kbd.o
+ obj-$(CONFIG_SERIO_GSCPS2) += gscps2.o
+ obj-$(CONFIG_HP_SDC) += hp_sdc.o
+diff --exclude=.git -urN linux-2.6.25.6/drivers/misc/atmel_tclib.c avr32-2.6/drivers/misc/atmel_tclib.c
+--- linux-2.6.25.6/drivers/misc/atmel_tclib.c 1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/drivers/misc/atmel_tclib.c 2008-06-12 15:03:59.515815344 +0200
+@@ -0,0 +1,161 @@
++#include <linux/atmel_tc.h>
++#include <linux/clk.h>
++#include <linux/err.h>
++#include <linux/init.h>
++#include <linux/io.h>
++#include <linux/ioport.h>
++#include <linux/kernel.h>
++#include <linux/platform_device.h>
++
++/* Number of bytes to reserve for the iomem resource */
++#define ATMEL_TC_IOMEM_SIZE 256
++
++
++/*
++ * This is a thin library to solve the problem of how to portably allocate
++ * one of the TC blocks. For simplicity, it doesn't currently expect to
++ * share individual timers between different drivers.
++ */
++
++#if defined(CONFIG_AVR32)
++/* AVR32 has these divide PBB */
++const u8 atmel_tc_divisors[5] = { 0, 4, 8, 16, 32, };
++EXPORT_SYMBOL(atmel_tc_divisors);
++
++#elif defined(CONFIG_ARCH_AT91)
++/* AT91 has these divide MCK */
++const u8 atmel_tc_divisors[5] = { 2, 8, 32, 128, 0, };
++EXPORT_SYMBOL(atmel_tc_divisors);
++
++#endif
++
++static DEFINE_SPINLOCK(tc_list_lock);
++static LIST_HEAD(tc_list);
++
++/**
++ * atmel_tc_alloc - allocate a specified TC block
++ * @block: which block to allocate
++ * @name: name to be associated with the iomem resource
++ *
++ * Caller allocates a block. If it is available, a pointer to a
++ * pre-initialized struct atmel_tc is returned. The caller can access
++ * the registers directly through the "regs" field.
++ */
++struct atmel_tc *atmel_tc_alloc(unsigned block, const char *name)
++{
++ struct atmel_tc *tc;
++ struct platform_device *pdev = NULL;
++ struct resource *r;
++
++ spin_lock(&tc_list_lock);
++ list_for_each_entry(tc, &tc_list, node) {
++ if (tc->pdev->id == block) {
++ pdev = tc->pdev;
++ break;
++ }
++ }
++
++ if (!pdev || tc->iomem)
++ goto fail;
++
++ r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
++ r = request_mem_region(r->start, ATMEL_TC_IOMEM_SIZE, name);
++ if (!r)
++ goto fail;
++
++ tc->regs = ioremap(r->start, ATMEL_TC_IOMEM_SIZE);
++ if (!tc->regs)
++ goto fail_ioremap;
++
++ tc->iomem = r;
++
++out:
++ spin_unlock(&tc_list_lock);
++ return tc;
++
++fail_ioremap:
++ release_resource(r);
++fail:
++ tc = NULL;
++ goto out;
++}
++EXPORT_SYMBOL_GPL(atmel_tc_alloc);
++
++/**
++ * atmel_tc_free - release a specified TC block
++ * @tc: Timer/counter block that was returned by atmel_tc_alloc()
++ *
++ * This reverses the effect of atmel_tc_alloc(), unmapping the I/O
++ * registers, invalidating the resource returned by that routine and
++ * making the TC available to other drivers.
++ */
++void atmel_tc_free(struct atmel_tc *tc)
++{
++ spin_lock(&tc_list_lock);
++ if (tc->regs) {
++ iounmap(tc->regs);
++ release_resource(tc->iomem);
++ tc->regs = NULL;
++ tc->iomem = NULL;
++ }
++ spin_unlock(&tc_list_lock);
++}
++EXPORT_SYMBOL_GPL(atmel_tc_free);
++
++static int __init tc_probe(struct platform_device *pdev)
++{
++ struct atmel_tc *tc;
++ struct clk *clk;
++ int irq;
++
++ if (!platform_get_resource(pdev, IORESOURCE_MEM, 0))
++ return -EINVAL;
++
++ irq = platform_get_irq(pdev, 0);
++ if (irq < 0)
++ return -EINVAL;
++
++ tc = kzalloc(sizeof(struct atmel_tc), GFP_KERNEL);
++ if (!tc)
++ return -ENOMEM;
++
++ tc->pdev = pdev;
++
++ clk = clk_get(&pdev->dev, "t0_clk");
++ if (IS_ERR(clk)) {
++ kfree(tc);
++ return -EINVAL;
++ }
++
++ tc->clk[0] = clk;
++ tc->clk[1] = clk_get(&pdev->dev, "t1_clk");
++ if (IS_ERR(tc->clk[1]))
++ tc->clk[1] = clk;
++ tc->clk[2] = clk_get(&pdev->dev, "t2_clk");
++ if (IS_ERR(tc->clk[2]))
++ tc->clk[2] = clk;
++
++ tc->irq[0] = irq;
++ tc->irq[1] = platform_get_irq(pdev, 1);
++ if (tc->irq[1] < 0)
++ tc->irq[1] = irq;
++ tc->irq[2] = platform_get_irq(pdev, 2);
++ if (tc->irq[2] < 0)
++ tc->irq[2] = irq;
++
++ spin_lock(&tc_list_lock);
++ list_add_tail(&tc->node, &tc_list);
++ spin_unlock(&tc_list_lock);
++
++ return 0;
++}
++
++static struct platform_driver tc_driver = {
++ .driver.name = "atmel_tcb",
++};
++
++static int __init tc_init(void)
++{
++ return platform_driver_probe(&tc_driver, tc_probe);
++}
++arch_initcall(tc_init);
+diff --exclude=.git -urN linux-2.6.25.6/drivers/misc/Kconfig avr32-2.6/drivers/misc/Kconfig
+--- linux-2.6.25.6/drivers/misc/Kconfig 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/misc/Kconfig 2008-06-12 15:09:41.067816939 +0200
+@@ -22,6 +22,39 @@
+ purposes including software controlled power-efficent backlights
+ on LCD displays, motor control, and waveform generation.
+
++config ATMEL_TCLIB
++ bool "Atmel AT32/AT91 Timer/Counter Library"
++ depends on (AVR32 || ARCH_AT91)
++ help
++ Select this if you want a library to allocate the Timer/Counter
++ blocks found on many Atmel processors. This facilitates using
++ these blocks by different drivers despite processor differences.
++
++config ATMEL_TCB_CLKSRC
++ bool "TC Block Clocksource"
++ depends on ATMEL_TCLIB && GENERIC_TIME
++ default y
++ help
++ Select this to get a high precision clocksource based on a
++ TC block with a 5+ MHz base clock rate. Two timer channels
++ are combined to make a single 32-bit timer.
++
++ When GENERIC_CLOCKEVENTS is defined, the third timer channel
++ may be used as a clock event device supporting oneshot mode
++ (delays of up to two seconds) based on the 32 KiHz clock.
++
++config ATMEL_TCB_CLKSRC_BLOCK
++ int
++ depends on ATMEL_TCB_CLKSRC
++ prompt "TC Block" if ARCH_AT91RM9200 || ARCH_AT91SAM9260 || CPU_AT32AP700X
++ default 0
++ range 0 1
++ help
++ Some chips provide more than one TC block, so you have the
++ choice of which one to use for the clock framework. The other
++ TC can be used for other purposes, such as PWM generation and
++ interval timing.
++
+ config IBM_ASM
+ tristate "Device driver for IBM RSA service processor"
+ depends on X86 && PCI && INPUT && EXPERIMENTAL
+diff --exclude=.git -urN linux-2.6.25.6/drivers/misc/Makefile avr32-2.6/drivers/misc/Makefile
+--- linux-2.6.25.6/drivers/misc/Makefile 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/misc/Makefile 2008-06-12 15:09:41.067816939 +0200
+@@ -10,6 +10,7 @@
+ obj-$(CONFIG_ASUS_LAPTOP) += asus-laptop.o
+ obj-$(CONFIG_ATMEL_PWM) += atmel_pwm.o
+ obj-$(CONFIG_ATMEL_SSC) += atmel-ssc.o
++obj-$(CONFIG_ATMEL_TCLIB) += atmel_tclib.o
+ obj-$(CONFIG_TC1100_WMI) += tc1100-wmi.o
+ obj-$(CONFIG_LKDTM) += lkdtm.o
+ obj-$(CONFIG_TIFM_CORE) += tifm_core.o
+diff --exclude=.git -urN linux-2.6.25.6/drivers/mmc/host/atmel-mci.c avr32-2.6/drivers/mmc/host/atmel-mci.c
+--- linux-2.6.25.6/drivers/mmc/host/atmel-mci.c 1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/drivers/mmc/host/atmel-mci.c 2008-06-12 15:09:41.083816184 +0200
+@@ -0,0 +1,1220 @@
++/*
++ * Atmel MultiMedia Card Interface driver
++ *
++ * Copyright (C) 2004-2006 Atmel Corporation
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 as
++ * published by the Free Software Foundation.
++ */
++#include <linux/blkdev.h>
++#include <linux/clk.h>
++#include <linux/device.h>
++#include <linux/dma-mapping.h>
++#include <linux/init.h>
++#include <linux/interrupt.h>
++#include <linux/ioport.h>
++#include <linux/module.h>
++#include <linux/platform_device.h>
++
++#include <linux/mmc/host.h>
++
++#include <asm/dma-controller.h>
++#include <asm/io.h>
++#include <asm/arch/board.h>
++#include <asm/arch/gpio.h>
++
++#include "atmel-mci.h"
++
++#define DRIVER_NAME "atmel_mci"
++
++#define MCI_DATA_ERROR_FLAGS (MCI_BIT(DCRCE) | MCI_BIT(DTOE) | \
++ MCI_BIT(OVRE) | MCI_BIT(UNRE))
++
++enum {
++ EVENT_CMD_COMPLETE = 0,
++ EVENT_DATA_COMPLETE,
++ EVENT_DATA_ERROR,
++ EVENT_STOP_SENT,
++ EVENT_STOP_COMPLETE,
++ EVENT_DMA_COMPLETE,
++ EVENT_DMA_ERROR,
++};
++
++struct atmel_mci_dma {
++ struct dma_request_sg req;
++ unsigned short rx_periph_id;
++ unsigned short tx_periph_id;
++};
++
++struct atmel_mci {
++ struct mmc_host *mmc;
++ void __iomem *regs;
++ struct atmel_mci_dma dma;
++
++ struct mmc_request *mrq;
++ struct mmc_command *cmd;
++ struct mmc_data *data;
++
++ u32 cmd_status;
++ u32 data_status;
++ u32 stop_status;
++ u32 stop_cmdr;
++
++ struct tasklet_struct tasklet;
++ unsigned long pending_events;
++ unsigned long completed_events;
++
++ int present;
++ int detect_pin;
++ int wp_pin;
++
++ /* For detect pin debouncing */
++ struct timer_list detect_timer;
++
++ unsigned long bus_hz;
++ unsigned long mapbase;
++ struct clk *mck;
++ struct platform_device *pdev;
++
++#ifdef CONFIG_DEBUG_FS
++ struct dentry *debugfs_root;
++ struct dentry *debugfs_regs;
++ struct dentry *debugfs_req;
++ struct dentry *debugfs_pending_events;
++ struct dentry *debugfs_completed_events;
++#endif
++};
++
++/* Those printks take an awful lot of time... */
++#ifndef DEBUG
++static unsigned int fmax = 15000000U;
++#else
++static unsigned int fmax = 1000000U;
++#endif
++module_param(fmax, uint, 0444);
++MODULE_PARM_DESC(fmax, "Max frequency in Hz of the MMC bus clock");
++
++/* Test bit macros for completed events */
++#define mci_cmd_is_complete(host) \
++ test_bit(EVENT_CMD_COMPLETE, &host->completed_events)
++#define mci_data_is_complete(host) \
++ test_bit(EVENT_DATA_COMPLETE, &host->completed_events)
++#define mci_data_error_is_complete(host) \
++ test_bit(EVENT_DATA_ERROR, &host->completed_events)
++#define mci_stop_sent_is_complete(host) \
++ test_bit(EVENT_STOP_SENT, &host->completed_events)
++#define mci_stop_is_complete(host) \
++ test_bit(EVENT_STOP_COMPLETE, &host->completed_events)
++#define mci_dma_is_complete(host) \
++ test_bit(EVENT_DMA_COMPLETE, &host->completed_events)
++#define mci_dma_error_is_complete(host) \
++ test_bit(EVENT_DMA_ERROR, &host->completed_events)
++
++/* Test and clear bit macros for pending events */
++#define mci_clear_cmd_is_pending(host) \
++ test_and_clear_bit(EVENT_CMD_COMPLETE, &host->pending_events)
++#define mci_clear_data_is_pending(host) \
++ test_and_clear_bit(EVENT_DATA_COMPLETE, &host->pending_events)
++#define mci_clear_data_error_is_pending(host) \
++ test_and_clear_bit(EVENT_DATA_ERROR, &host->pending_events)
++#define mci_clear_stop_sent_is_pending(host) \
++ test_and_clear_bit(EVENT_STOP_SENT, &host->pending_events)
++#define mci_clear_stop_is_pending(host) \
++ test_and_clear_bit(EVENT_STOP_COMPLETE, &host->pending_events)
++#define mci_clear_dma_error_is_pending(host) \
++ test_and_clear_bit(EVENT_DMA_ERROR, &host->pending_events)
++
++/* Test and set bit macros for completed events */
++#define mci_set_cmd_is_completed(host) \
++ test_and_set_bit(EVENT_CMD_COMPLETE, &host->completed_events)
++#define mci_set_data_is_completed(host) \
++ test_and_set_bit(EVENT_DATA_COMPLETE, &host->completed_events)
++#define mci_set_data_error_is_completed(host) \
++ test_and_set_bit(EVENT_DATA_ERROR, &host->completed_events)
++#define mci_set_stop_sent_is_completed(host) \
++ test_and_set_bit(EVENT_STOP_SENT, &host->completed_events)
++#define mci_set_stop_is_completed(host) \
++ test_and_set_bit(EVENT_STOP_COMPLETE, &host->completed_events)
++#define mci_set_dma_error_is_completed(host) \
++ test_and_set_bit(EVENT_DMA_ERROR, &host->completed_events)
++
++/* Set bit macros for completed events */
++#define mci_set_cmd_complete(host) \
++ set_bit(EVENT_CMD_COMPLETE, &host->completed_events)
++#define mci_set_data_complete(host) \
++ set_bit(EVENT_DATA_COMPLETE, &host->completed_events)
++#define mci_set_data_error_complete(host) \
++ set_bit(EVENT_DATA_ERROR, &host->completed_events)
++#define mci_set_stop_sent_complete(host) \
++ set_bit(EVENT_STOP_SENT, &host->completed_events)
++#define mci_set_stop_complete(host) \
++ set_bit(EVENT_STOP_COMPLETE, &host->completed_events)
++#define mci_set_dma_complete(host) \
++ set_bit(EVENT_DMA_COMPLETE, &host->completed_events)
++#define mci_set_dma_error_complete(host) \
++ set_bit(EVENT_DMA_ERROR, &host->completed_events)
++
++/* Set bit macros for pending events */
++#define mci_set_cmd_pending(host) \
++ set_bit(EVENT_CMD_COMPLETE, &host->pending_events)
++#define mci_set_data_pending(host) \
++ set_bit(EVENT_DATA_COMPLETE, &host->pending_events)
++#define mci_set_data_error_pending(host) \
++ set_bit(EVENT_DATA_ERROR, &host->pending_events)
++#define mci_set_stop_sent_pending(host) \
++ set_bit(EVENT_STOP_SENT, &host->pending_events)
++#define mci_set_stop_pending(host) \
++ set_bit(EVENT_STOP_COMPLETE, &host->pending_events)
++#define mci_set_dma_error_pending(host) \
++ set_bit(EVENT_DMA_ERROR, &host->pending_events)
++
++/* Clear bit macros for pending events */
++#define mci_clear_cmd_pending(host) \
++ clear_bit(EVENT_CMD_COMPLETE, &host->pending_events)
++#define mci_clear_data_pending(host) \
++ clear_bit(EVENT_DATA_COMPLETE, &host->pending_events)
++#define mci_clear_data_error_pending(host) \
++ clear_bit(EVENT_DATA_ERROR, &host->pending_events)
++#define mci_clear_stop_sent_pending(host) \
++ clear_bit(EVENT_STOP_SENT, &host->pending_events)
++#define mci_clear_stop_pending(host) \
++ clear_bit(EVENT_STOP_COMPLETE, &host->pending_events)
++#define mci_clear_dma_error_pending(host) \
++ clear_bit(EVENT_DMA_ERROR, &host->pending_events)
++
++
++#ifdef CONFIG_DEBUG_FS
++#include <linux/debugfs.h>
++
++#define DBG_REQ_BUF_SIZE (4096 - sizeof(unsigned int))
++
++struct req_dbg_data {
++ unsigned int nbytes;
++ char str[DBG_REQ_BUF_SIZE];
++};
++
++static int req_dbg_open(struct inode *inode, struct file *file)
++{
++ struct atmel_mci *host;
++ struct mmc_request *mrq;
++ struct mmc_command *cmd, *stop;
++ struct mmc_data *data;
++ struct req_dbg_data *priv;
++ char *str;
++ unsigned long n = 0;
++
++ priv = kzalloc(DBG_REQ_BUF_SIZE, GFP_KERNEL);
++ if (!priv)
++ return -ENOMEM;
++ str = priv->str;
++
++ mutex_lock(&inode->i_mutex);
++ host = inode->i_private;
++
++ spin_lock_irq(&host->mmc->lock);
++ mrq = host->mrq;
++ if (mrq) {
++ cmd = mrq->cmd;
++ data = mrq->data;
++ stop = mrq->stop;
++ n = snprintf(str, DBG_REQ_BUF_SIZE,
++ "CMD%u(0x%x) %x %x %x %x %x (err %u)\n",
++ cmd->opcode, cmd->arg, cmd->flags,
++ cmd->resp[0], cmd->resp[1], cmd->resp[2],
++ cmd->resp[3], cmd->error);
++ if (n < DBG_REQ_BUF_SIZE && data)
++ n += snprintf(str + n, DBG_REQ_BUF_SIZE - n,
++ "DATA %u * %u (%u) %x (err %u)\n",
++ data->blocks, data->blksz,
++ data->bytes_xfered, data->flags,
++ data->error);
++ if (n < DBG_REQ_BUF_SIZE && stop)
++ n += snprintf(str + n, DBG_REQ_BUF_SIZE - n,
++ "CMD%u(0x%x) %x %x %x %x %x (err %u)\n",
++ stop->opcode, stop->arg, stop->flags,
++ stop->resp[0], stop->resp[1],
++ stop->resp[2], stop->resp[3],
++ stop->error);
++ }
++ spin_unlock_irq(&host->mmc->lock);
++ mutex_unlock(&inode->i_mutex);
++
++ priv->nbytes = min(n, DBG_REQ_BUF_SIZE);
++ file->private_data = priv;
++
++ return 0;
++}
++
++static ssize_t req_dbg_read(struct file *file, char __user *buf,
++ size_t nbytes, loff_t *ppos)
++{
++ struct req_dbg_data *priv = file->private_data;
++
++ return simple_read_from_buffer(buf, nbytes, ppos,
++ priv->str, priv->nbytes);
++}
++
++static int req_dbg_release(struct inode *inode, struct file *file)
++{
++ kfree(file->private_data);
++ return 0;
++}
++
++static const struct file_operations req_dbg_fops = {
++ .owner = THIS_MODULE,
++ .open = req_dbg_open,
++ .llseek = no_llseek,
++ .read = req_dbg_read,
++ .release = req_dbg_release,
++};
++
++static int regs_dbg_open(struct inode *inode, struct file *file)
++{
++ struct atmel_mci *host;
++ unsigned int i;
++ u32 *data;
++ int ret = -ENOMEM;
++
++ mutex_lock(&inode->i_mutex);
++ host = inode->i_private;
++ data = kmalloc(inode->i_size, GFP_KERNEL);
++ if (!data)
++ goto out;
++
++ spin_lock_irq(&host->mmc->lock);
++ for (i = 0; i < inode->i_size / 4; i++)
++ data[i] = __raw_readl(host->regs + i * 4);
++ spin_unlock_irq(&host->mmc->lock);
++
++ file->private_data = data;
++ ret = 0;
++
++out:
++ mutex_unlock(&inode->i_mutex);
++
++ return ret;
++}
++
++static ssize_t regs_dbg_read(struct file *file, char __user *buf,
++ size_t nbytes, loff_t *ppos)
++{
++ struct inode *inode = file->f_dentry->d_inode;
++ int ret;
++
++ mutex_lock(&inode->i_mutex);
++ ret = simple_read_from_buffer(buf, nbytes, ppos,
++ file->private_data,
++ file->f_dentry->d_inode->i_size);
++ mutex_unlock(&inode->i_mutex);
++
++ return ret;
++}
++
++static int regs_dbg_release(struct inode *inode, struct file *file)
++{
++ kfree(file->private_data);
++ return 0;
++}
++
++static const struct file_operations regs_dbg_fops = {
++ .owner = THIS_MODULE,
++ .open = regs_dbg_open,
++ .llseek = generic_file_llseek,
++ .read = regs_dbg_read,
++ .release = regs_dbg_release,
++};
++
++static void atmci_init_debugfs(struct atmel_mci *host)
++{
++ struct mmc_host *mmc;
++ struct dentry *root, *regs;
++ struct resource *res;
++
++ mmc = host->mmc;
++ root = debugfs_create_dir(mmc_hostname(mmc), NULL);
++ if (IS_ERR(root) || !root)
++ goto err_root;
++ host->debugfs_root = root;
++
++ regs = debugfs_create_file("regs", 0400, root, host, ®s_dbg_fops);
++ if (!regs)
++ goto err_regs;
++
++ res = platform_get_resource(host->pdev, IORESOURCE_MEM, 0);
++ regs->d_inode->i_size = res->end - res->start + 1;
++ host->debugfs_regs = regs;
++
++ host->debugfs_req = debugfs_create_file("req", 0400, root,
++ host, &req_dbg_fops);
++ if (!host->debugfs_req)
++ goto err_req;
++
++ host->debugfs_pending_events
++ = debugfs_create_u32("pending_events", 0400, root,
++ (u32 *)&host->pending_events);
++ if (!host->debugfs_pending_events)
++ goto err_pending_events;
++
++ host->debugfs_completed_events
++ = debugfs_create_u32("completed_events", 0400, root,
++ (u32 *)&host->completed_events);
++ if (!host->debugfs_completed_events)
++ goto err_completed_events;
++
++ return;
++
++err_completed_events:
++ debugfs_remove(host->debugfs_pending_events);
++err_pending_events:
++ debugfs_remove(host->debugfs_req);
++err_req:
++ debugfs_remove(host->debugfs_regs);
++err_regs:
++ debugfs_remove(host->debugfs_root);
++err_root:
++ host->debugfs_root = NULL;
++ dev_err(&host->pdev->dev,
++ "failed to initialize debugfs for %s\n",
++ mmc_hostname(mmc));
++}
++
++static void atmci_cleanup_debugfs(struct atmel_mci *host)
++{
++ if (host->debugfs_root) {
++ debugfs_remove(host->debugfs_completed_events);
++ debugfs_remove(host->debugfs_pending_events);
++ debugfs_remove(host->debugfs_req);
++ debugfs_remove(host->debugfs_regs);
++ debugfs_remove(host->debugfs_root);
++ host->debugfs_root = NULL;
++ }
++}
++#else
++static inline void atmci_init_debugfs(struct atmel_mci *host)
++{
++
++}
++
++static inline void atmci_cleanup_debugfs(struct atmel_mci *host)
++{
++
++}
++#endif /* CONFIG_DEBUG_FS */
++
++static inline unsigned int ns_to_clocks(struct atmel_mci *host,
++ unsigned int ns)
++{
++ return (ns * (host->bus_hz / 1000000) + 999) / 1000;
++}
++
++static void atmci_set_timeout(struct atmel_mci *host,
++ struct mmc_data *data)
++{
++ static unsigned dtomul_to_shift[] = {
++ 0, 4, 7, 8, 10, 12, 16, 20
++ };
++ unsigned timeout;
++ unsigned dtocyc, dtomul;
++
++ timeout = ns_to_clocks(host, data->timeout_ns) + data->timeout_clks;
++
++ for (dtomul = 0; dtomul < 8; dtomul++) {
++ unsigned shift = dtomul_to_shift[dtomul];
++ dtocyc = (timeout + (1 << shift) - 1) >> shift;
++ if (dtocyc < 15)
++ break;
++ }
++
++ if (dtomul >= 8) {
++ dtomul = 7;
++ dtocyc = 15;
++ }
++
++ dev_dbg(&host->mmc->class_dev, "setting timeout to %u cycles\n",
++ dtocyc << dtomul_to_shift[dtomul]);
++ mci_writel(host, DTOR, (MCI_BF(DTOMUL, dtomul)
++ | MCI_BF(DTOCYC, dtocyc)));
++}
++
++/*
++ * Return mask with command flags to be enabled for this command.
++ */
++static u32 atmci_prepare_command(struct mmc_host *mmc,
++ struct mmc_command *cmd)
++{
++ u32 cmdr;
++
++ cmd->error = 0;
++
++ cmdr = MCI_BF(CMDNB, cmd->opcode);
++
++ if (cmd->flags & MMC_RSP_PRESENT) {
++ if (cmd->flags & MMC_RSP_136)
++ cmdr |= MCI_BF(RSPTYP, MCI_RSPTYP_136_BIT);
++ else
++ cmdr |= MCI_BF(RSPTYP, MCI_RSPTYP_48_BIT);
++ }
++
++ /*
++ * This should really be MAXLAT_5 for CMD2 and ACMD41, but
++ * it's too difficult to determine whether this is an ACMD or
++ * not. Better make it 64.
++ */
++ cmdr |= MCI_BIT(MAXLAT);
++
++ if (mmc->ios.bus_mode == MMC_BUSMODE_OPENDRAIN)
++ cmdr |= MCI_BIT(OPDCMD);
++
++ dev_dbg(&mmc->class_dev,
++ "cmd: op %02x arg %08x flags %08x, cmdflags %08lx\n",
++ cmd->opcode, cmd->arg, cmd->flags, (unsigned long)cmdr);
++
++ return cmdr;
++}
++
++static void atmci_start_command(struct atmel_mci *host,
++ struct mmc_command *cmd,
++ u32 cmd_flags)
++{
++ WARN_ON(host->cmd);
++ host->cmd = cmd;
++
++ mci_writel(host, ARGR, cmd->arg);
++ mci_writel(host, CMDR, cmd_flags);
++
++ if (cmd->data)
++ dma_start_request(host->dma.req.req.dmac,
++ host->dma.req.req.channel);
++}
++
++/*
++ * Returns a mask of flags to be set in the command register when the
++ * command to start the transfer is to be sent.
++ */
++static u32 atmci_prepare_data(struct mmc_host *mmc, struct mmc_data *data)
++{
++ struct atmel_mci *host = mmc_priv(mmc);
++ u32 cmd_flags;
++
++ WARN_ON(host->data);
++ host->data = data;
++
++ atmci_set_timeout(host, data);
++ mci_writel(host, BLKR, (MCI_BF(BCNT, data->blocks)
++ | MCI_BF(BLKLEN, data->blksz)));
++ host->dma.req.block_size = data->blksz;
++ host->dma.req.nr_blocks = data->blocks;
++
++ cmd_flags = MCI_BF(TRCMD, MCI_TRCMD_START_TRANS);
++ if (data->flags & MMC_DATA_STREAM)
++ cmd_flags |= MCI_BF(TRTYP, MCI_TRTYP_STREAM);
++ else if (data->blocks > 1)
++ cmd_flags |= MCI_BF(TRTYP, MCI_TRTYP_MULTI_BLOCK);
++ else
++ cmd_flags |= MCI_BF(TRTYP, MCI_TRTYP_BLOCK);
++
++ if (data->flags & MMC_DATA_READ) {
++ cmd_flags |= MCI_BIT(TRDIR);
++ host->dma.req.nr_sg
++ = dma_map_sg(&host->pdev->dev, data->sg,
++ data->sg_len, DMA_FROM_DEVICE);
++ host->dma.req.periph_id = host->dma.rx_periph_id;
++ host->dma.req.direction = DMA_DIR_PERIPH_TO_MEM;
++ host->dma.req.data_reg = host->mapbase + MCI_RDR;
++ } else {
++ host->dma.req.nr_sg
++ = dma_map_sg(&host->pdev->dev, data->sg,
++ data->sg_len, DMA_TO_DEVICE);
++ host->dma.req.periph_id = host->dma.tx_periph_id;
++ host->dma.req.direction = DMA_DIR_MEM_TO_PERIPH;
++ host->dma.req.data_reg = host->mapbase + MCI_TDR;
++ }
++ host->dma.req.sg = data->sg;
++
++ dma_prepare_request_sg(host->dma.req.req.dmac, &host->dma.req);
++
++ return cmd_flags;
++}
++
++static void atmci_request(struct mmc_host *mmc, struct mmc_request *mrq)
++{
++ struct atmel_mci *host = mmc_priv(mmc);
++ struct mmc_data *data = mrq->data;
++ u32 iflags;
++ u32 cmdflags = 0;
++
++ iflags = mci_readl(host, IMR);
++ if (iflags)
++ dev_warn(&mmc->class_dev, "WARNING: IMR=0x%08x\n",
++ mci_readl(host, IMR));
++
++ WARN_ON(host->mrq != NULL);
++
++ /*
++ * We may "know" the card is gone even though there's still an
++ * electrical connection. If so, we really need to communicate
++ * this to the MMC core since there won't be any more
++ * interrupts as the card is completely removed. Otherwise,
++ * the MMC core might believe the card is still there even
++ * though the card was just removed very slowly.
++ */
++ if (!host->present) {
++ mrq->cmd->error = -ENOMEDIUM;
++ mmc_request_done(mmc, mrq);
++ return;
++ }
++
++ host->mrq = mrq;
++ host->pending_events = 0;
++ host->completed_events = 0;
++
++ iflags = MCI_BIT(CMDRDY);
++ cmdflags = atmci_prepare_command(mmc, mrq->cmd);
++
++ if (mrq->stop) {
++ WARN_ON(!data);
++
++ host->stop_cmdr = atmci_prepare_command(mmc, mrq->stop);
++ host->stop_cmdr |= MCI_BF(TRCMD, MCI_TRCMD_STOP_TRANS);
++ if (!(data->flags & MMC_DATA_WRITE))
++ host->stop_cmdr |= MCI_BIT(TRDIR);
++ if (data->flags & MMC_DATA_STREAM)
++ host->stop_cmdr |= MCI_BF(TRTYP, MCI_TRTYP_STREAM);
++ else
++ host->stop_cmdr |= MCI_BF(TRTYP, MCI_TRTYP_MULTI_BLOCK);
++ }
++ if (data) {
++ cmdflags |= atmci_prepare_data(mmc, data);
++ iflags |= MCI_DATA_ERROR_FLAGS;
++ }
++
++ atmci_start_command(host, mrq->cmd, cmdflags);
++ mci_writel(host, IER, iflags);
++}
++
++static void atmci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
++{
++ struct atmel_mci *host = mmc_priv(mmc);
++ u32 mr;
++
++ if (ios->clock) {
++ u32 clkdiv;
++
++ /* Set clock rate */
++ clkdiv = DIV_ROUND_UP(host->bus_hz, 2 * ios->clock) - 1;
++ if (clkdiv > 255) {
++ dev_warn(&mmc->class_dev,
++ "clock %u too slow; using %lu\n",
++ ios->clock, host->bus_hz / (2 * 256));
++ clkdiv = 255;
++ }
++
++ mr = mci_readl(host, MR);
++ mr = MCI_BFINS(CLKDIV, clkdiv, mr)
++ | MCI_BIT(WRPROOF) | MCI_BIT(RDPROOF);
++ mci_writel(host, MR, mr);
++
++ /* Enable the MCI controller */
++ mci_writel(host, CR, MCI_BIT(MCIEN));
++ } else {
++ /* Disable the MCI controller */
++ mci_writel(host, CR, MCI_BIT(MCIDIS));
++ }
++
++ switch (ios->bus_width) {
++ case MMC_BUS_WIDTH_1:
++ mci_writel(host, SDCR, 0);
++ break;
++ case MMC_BUS_WIDTH_4:
++ mci_writel(host, SDCR, MCI_BIT(SDCBUS));
++ break;
++ }
++
++ switch (ios->power_mode) {
++ case MMC_POWER_ON:
++ /* Send init sequence (74 clock cycles) */
++ mci_writel(host, IDR, ~0UL);
++ mci_writel(host, CMDR, MCI_BF(SPCMD, MCI_SPCMD_INIT_CMD));
++ while (!(mci_readl(host, SR) & MCI_BIT(CMDRDY)))
++ cpu_relax();
++ break;
++ default:
++ /*
++ * TODO: None of the currently available AVR32-based
++ * boards allow MMC power to be turned off. Implement
++ * power control when this can be tested properly.
++ */
++ break;
++ }
++}
++
++static int atmci_get_ro(struct mmc_host *mmc)
++{
++ int read_only = 0;
++ struct atmel_mci *host = mmc_priv(mmc);
++
++ if (host->wp_pin >= 0) {
++ read_only = gpio_get_value(host->wp_pin);
++ dev_dbg(&mmc->class_dev, "card is %s\n",
++ read_only ? "read-only" : "read-write");
++ } else {
++ dev_dbg(&mmc->class_dev,
++ "no pin for checking read-only switch."
++ " Assuming write-enable.\n");
++ }
++
++ return read_only;
++}
++
++static struct mmc_host_ops atmci_ops = {
++ .request = atmci_request,
++ .set_ios = atmci_set_ios,
++ .get_ro = atmci_get_ro,
++};
++
++static void atmci_request_end(struct mmc_host *mmc, struct mmc_request *mrq)
++{
++ struct atmel_mci *host = mmc_priv(mmc);
++
++ WARN_ON(host->cmd || host->data);
++ host->mrq = NULL;
++
++ mmc_request_done(mmc, mrq);
++}
++
++static void send_stop_cmd(struct mmc_host *mmc, struct mmc_data *data,
++ u32 flags)
++{
++ struct atmel_mci *host = mmc_priv(mmc);
++
++ atmci_start_command(host, data->stop, host->stop_cmdr | flags);
++ mci_writel(host, IER, MCI_BIT(CMDRDY));
++}
++
++static void atmci_data_complete(struct atmel_mci *host, struct mmc_data *data)
++{
++ host->data = NULL;
++ dma_unmap_sg(&host->pdev->dev, data->sg, host->dma.req.nr_sg,
++ ((data->flags & MMC_DATA_WRITE)
++ ? DMA_TO_DEVICE : DMA_FROM_DEVICE));
++
++ /*
++ * Data might complete before command for very short transfers
++ * (like READ_SCR)
++ */
++ if (mci_cmd_is_complete(host)
++ && (!data->stop || mci_stop_is_complete(host)))
++ atmci_request_end(host->mmc, data->mrq);
++}
++
++static void atmci_command_complete(struct atmel_mci *host,
++ struct mmc_command *cmd, u32 status)
++{
++ if (status & MCI_BIT(RTOE))
++ cmd->error = -ETIMEDOUT;
++ else if ((cmd->flags & MMC_RSP_CRC)
++ && (status & MCI_BIT(RCRCE)))
++ cmd->error = -EILSEQ;
++ else if (status & (MCI_BIT(RINDE) | MCI_BIT(RDIRE) | MCI_BIT(RENDE)))
++ cmd->error = -EIO;
++
++ if (cmd->error) {
++ dev_dbg(&host->mmc->class_dev,
++ "command error: op=0x%x status=0x%08x\n",
++ cmd->opcode, status);
++
++ if (cmd->data) {
++ dma_stop_request(host->dma.req.req.dmac,
++ host->dma.req.req.channel);
++ mci_writel(host, IDR, MCI_BIT(NOTBUSY)
++ | MCI_DATA_ERROR_FLAGS);
++ host->data = NULL;
++ }
++ }
++}
++
++static void atmci_detect_change(unsigned long data)
++{
++ struct atmel_mci *host = (struct atmel_mci *)data;
++ struct mmc_request *mrq = host->mrq;
++ int present;
++
++ /*
++ * atmci_remove() sets detect_pin to -1 before freeing the
++ * interrupt. We must not re-enable the interrupt if it has
++ * been freed.
++ */
++ smp_rmb();
++ if (host->detect_pin < 0)
++ return;
++
++ enable_irq(gpio_to_irq(host->detect_pin));
++ present = !gpio_get_value(host->detect_pin);
++
++ dev_vdbg(&host->pdev->dev, "detect change: %d (was %d)\n",
++ present, host->present);
++
++ if (present != host->present) {
++ dev_dbg(&host->mmc->class_dev, "card %s\n",
++ present ? "inserted" : "removed");
++ host->present = present;
++
++ /* Reset controller if card is gone */
++ if (!present) {
++ mci_writel(host, CR, MCI_BIT(SWRST));
++ mci_writel(host, IDR, ~0UL);
++ mci_writel(host, CR, MCI_BIT(MCIEN));
++ }
++
++ /* Clean up queue if present */
++ if (mrq) {
++ if (!mci_cmd_is_complete(host))
++ mrq->cmd->error = -ENOMEDIUM;
++ if (mrq->data && !mci_data_is_complete(host)
++ && !mci_data_error_is_complete(host)) {
++ dma_stop_request(host->dma.req.req.dmac,
++ host->dma.req.req.channel);
++ host->data->error = -ENOMEDIUM;
++ atmci_data_complete(host, host->data);
++ }
++ if (mrq->stop && !mci_stop_is_complete(host))
++ mrq->stop->error = -ENOMEDIUM;
++
++ host->cmd = NULL;
++ atmci_request_end(host->mmc, mrq);
++ }
++
++ mmc_detect_change(host->mmc, 0);
++ }
++}
++
++static void atmci_tasklet_func(unsigned long priv)
++{
++ struct mmc_host *mmc = (struct mmc_host *)priv;
++ struct atmel_mci *host = mmc_priv(mmc);
++ struct mmc_request *mrq = host->mrq;
++ struct mmc_data *data = host->data;
++
++ dev_vdbg(&mmc->class_dev,
++ "tasklet: pending/completed/mask %lx/%lx/%x\n",
++ host->pending_events, host->completed_events,
++ mci_readl(host, IMR));
++
++ if (mci_clear_cmd_is_pending(host)) {
++ mci_set_cmd_complete(host);
++ atmci_command_complete(host, mrq->cmd, host->cmd_status);
++ if (!host->data || mci_data_is_complete(host)
++ || mci_data_error_is_complete(host))
++ atmci_request_end(mmc, mrq);
++ }
++ if (mci_clear_stop_is_pending(host)) {
++ mci_set_stop_complete(host);
++ atmci_command_complete(host, mrq->stop, host->stop_status);
++ if (mci_data_is_complete(host)
++ || mci_data_error_is_complete(host))
++ atmci_request_end(mmc, mrq);
++ }
++ if (mci_clear_dma_error_is_pending(host)) {
++ mci_set_dma_error_complete(host);
++ mci_clear_data_pending(host);
++
++ /* DMA controller got bus error => invalid address */
++ data->error = -EIO;
++
++ dev_dbg(&mmc->class_dev, "dma error after %u bytes xfered\n",
++ host->data->bytes_xfered);
++
++ if (data->stop
++ && !mci_set_stop_sent_is_completed(host))
++ /* TODO: Check if card is still present */
++ send_stop_cmd(host->mmc, data, 0);
++
++ atmci_data_complete(host, data);
++ }
++ if (mci_clear_data_error_is_pending(host)) {
++ u32 status = host->data_status;
++
++ mci_set_data_error_complete(host);
++ mci_clear_data_pending(host);
++
++ dma_stop_request(host->dma.req.req.dmac,
++ host->dma.req.req.channel);
++
++ if (status & MCI_BIT(DCRCE)) {
++ dev_dbg(&mmc->class_dev, "data CRC error\n");
++ data->error = -EILSEQ;
++ } else if (status & MCI_BIT(DTOE)) {
++ dev_dbg(&mmc->class_dev, "data timeout error\n");
++ data->error = -ETIMEDOUT;
++ } else {
++ dev_dbg(&mmc->class_dev, "data FIFO error\n");
++ data->error = -EIO;
++ }
++ dev_dbg(&mmc->class_dev, "bytes xfered: %u\n",
++ data->bytes_xfered);
++
++ if (data->stop
++ && !mci_set_stop_sent_is_completed(host))
++ /* TODO: Check if card is still present */
++ send_stop_cmd(host->mmc, data, 0);
++
++ atmci_data_complete(host, data);
++ }
++ if (mci_clear_data_is_pending(host)) {
++ mci_set_data_complete(host);
++ data->bytes_xfered = data->blocks * data->blksz;
++ atmci_data_complete(host, data);
++ }
++}
++
++static void atmci_cmd_interrupt(struct mmc_host *mmc, u32 status)
++{
++ struct atmel_mci *host = mmc_priv(mmc);
++ struct mmc_command *cmd = host->cmd;
++
++ /*
++ * Read the response now so that we're free to send a new
++ * command immediately.
++ */
++ cmd->resp[0] = mci_readl(host, RSPR);
++ cmd->resp[1] = mci_readl(host, RSPR);
++ cmd->resp[2] = mci_readl(host, RSPR);
++ cmd->resp[3] = mci_readl(host, RSPR);
++
++ mci_writel(host, IDR, MCI_BIT(CMDRDY));
++ host->cmd = NULL;
++
++ if (mci_stop_sent_is_complete(host)) {
++ host->stop_status = status;
++ mci_set_stop_pending(host);
++ } else {
++ struct mmc_request *mrq = host->mrq;
++
++ if (mrq->stop && mci_dma_is_complete(host)
++ && !mci_set_stop_sent_is_completed(host))
++ send_stop_cmd(host->mmc, mrq->data, 0);
++ host->cmd_status = status;
++ mci_set_cmd_pending(host);
++ }
++
++ tasklet_schedule(&host->tasklet);
++}
++
++static void atmci_xfer_complete(struct dma_request *_req)
++{
++ struct dma_request_sg *req = to_dma_request_sg(_req);
++ struct atmel_mci_dma *dma;
++ struct atmel_mci *host;
++ struct mmc_data *data;
++
++ dma = container_of(req, struct atmel_mci_dma, req);
++ host = container_of(dma, struct atmel_mci, dma);
++ data = host->data;
++
++ /*
++ * This callback may be called before we see the CMDRDY
++ * interrupt under heavy irq load (possibly caused by other
++ * drivers) or when interrupts are disabled for a long time.
++ */
++ mci_set_dma_complete(host);
++ if (data->stop && mci_cmd_is_complete(host)
++ && !mci_set_stop_sent_is_completed(host))
++ send_stop_cmd(host->mmc, data, 0);
++
++ /*
++ * Regardless of what the documentation says, we have to wait
++ * for NOTBUSY even after block read operations.
++ *
++ * When the DMA transfer is complete, the controller may still
++ * be reading the CRC from the card, i.e. the data transfer is
++ * still in progress and we haven't seen all the potential
++ * error bits yet.
++ */
++ mci_writel(host, IER, MCI_BIT(NOTBUSY));
++}
++
++static void atmci_dma_error(struct dma_request *_req)
++{
++ struct dma_request_sg *req = to_dma_request_sg(_req);
++ struct atmel_mci_dma *dma;
++ struct atmel_mci *host;
++
++ dma = container_of(req, struct atmel_mci_dma, req);
++ host = container_of(dma, struct atmel_mci, dma);
++
++ mci_writel(host, IDR, (MCI_BIT(NOTBUSY)
++ | MCI_DATA_ERROR_FLAGS));
++
++ mci_set_dma_error_pending(host);
++ tasklet_schedule(&host->tasklet);
++}
++
++static irqreturn_t atmci_interrupt(int irq, void *dev_id)
++{
++ struct mmc_host *mmc = dev_id;
++ struct atmel_mci *host = mmc_priv(mmc);
++ u32 status, mask, pending;
++
++ spin_lock(&mmc->lock);
++
++ status = mci_readl(host, SR);
++ mask = mci_readl(host, IMR);
++ pending = status & mask;
++
++ do {
++ if (pending & MCI_DATA_ERROR_FLAGS) {
++ mci_writel(host, IDR, (MCI_BIT(NOTBUSY)
++ | MCI_DATA_ERROR_FLAGS));
++ host->data_status = status;
++ mci_set_data_error_pending(host);
++ tasklet_schedule(&host->tasklet);
++ break;
++ }
++ if (pending & MCI_BIT(CMDRDY))
++ atmci_cmd_interrupt(mmc, status);
++ if (pending & MCI_BIT(NOTBUSY)) {
++ mci_writel(host, IDR, (MCI_BIT(NOTBUSY)
++ | MCI_DATA_ERROR_FLAGS));
++ mci_set_data_pending(host);
++ tasklet_schedule(&host->tasklet);
++ }
++
++ status = mci_readl(host, SR);
++ mask = mci_readl(host, IMR);
++ pending = status & mask;
++ } while (pending);
++
++ spin_unlock(&mmc->lock);
++
++ return IRQ_HANDLED;
++}
++
++static irqreturn_t atmci_detect_interrupt(int irq, void *dev_id)
++{
++ struct mmc_host *mmc = dev_id;
++ struct atmel_mci *host = mmc_priv(mmc);
++
++ /*
++ * Disable interrupts until the pin has stabilized and check
++ * the state then. Use mod_timer() since we may be in the
++ * middle of the timer routine when this interrupt triggers.
++ */
++ disable_irq_nosync(irq);
++ mod_timer(&host->detect_timer, jiffies + msecs_to_jiffies(20));
++
++ return IRQ_HANDLED;
++}
++
++static int __devinit atmci_probe(struct platform_device *pdev)
++{
++ struct mci_platform_data *board;
++ struct atmel_mci *host;
++ struct mmc_host *mmc;
++ struct resource *regs;
++ int irq;
++ int ret;
++
++ regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
++ if (!regs)
++ return -ENXIO;
++ irq = platform_get_irq(pdev, 0);
++ if (irq < 0)
++ return irq;
++
++ board = pdev->dev.platform_data;
++
++ mmc = mmc_alloc_host(sizeof(struct atmel_mci), &pdev->dev);
++ if (!mmc)
++ return -ENOMEM;
++
++ host = mmc_priv(mmc);
++ host->pdev = pdev;
++ host->mmc = mmc;
++ if (board) {
++ host->detect_pin = board->detect_pin;
++ host->wp_pin = board->wp_pin;
++ } else {
++ host->detect_pin = -1;
++ host->wp_pin = -1;
++ }
++
++ host->mck = clk_get(&pdev->dev, "mci_clk");
++ if (IS_ERR(host->mck)) {
++ ret = PTR_ERR(host->mck);
++ goto out_free_host;
++ }
++ clk_enable(host->mck);
++
++ ret = -ENOMEM;
++ host->regs = ioremap(regs->start, regs->end - regs->start + 1);
++ if (!host->regs)
++ goto out_disable_clk;
++
++ host->bus_hz = clk_get_rate(host->mck);
++ host->mapbase = regs->start;
++
++ mmc->ops = &atmci_ops;
++ mmc->f_min = (host->bus_hz + 511) / 512;
++ mmc->f_max = min((unsigned int)(host->bus_hz / 2), fmax);
++ mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34;
++ mmc->caps |= MMC_CAP_4_BIT_DATA;
++
++ tasklet_init(&host->tasklet, atmci_tasklet_func, (unsigned long)mmc);
++
++ ret = request_irq(irq, atmci_interrupt, 0, "mmci", mmc);
++ if (ret)
++ goto out_unmap;
++
++ /* Assume card is present if we don't have a detect pin */
++ host->present = 1;
++ if (host->detect_pin >= 0) {
++ if (gpio_request(host->detect_pin, "mmc_detect")) {
++ dev_dbg(&mmc->class_dev, "no detect pin available\n");
++ host->detect_pin = -1;
++ } else {
++ host->present = !gpio_get_value(host->detect_pin);
++ }
++ }
++ if (host->wp_pin >= 0) {
++ if (gpio_request(host->wp_pin, "mmc_wp")) {
++ dev_dbg(&mmc->class_dev, "no WP pin available\n");
++ host->wp_pin = -1;
++ }
++ }
++
++ /* TODO: Get this information from platform data */
++ ret = -ENOMEM;
++ host->dma.req.req.dmac = find_dma_controller(0);
++ if (!host->dma.req.req.dmac) {
++ dev_dbg(&mmc->class_dev, "no DMA controller available\n");
++ goto out_free_irq;
++ }
++ ret = dma_alloc_channel(host->dma.req.req.dmac);
++ if (ret < 0) {
++ dev_dbg(&mmc->class_dev, "unable to allocate DMA channel\n");
++ goto out_free_irq;
++ }
++ host->dma.req.req.channel = ret;
++ host->dma.req.width = DMA_WIDTH_32BIT;
++ host->dma.req.req.xfer_complete = atmci_xfer_complete;
++ host->dma.req.req.block_complete = NULL; // atmci_block_complete;
++ host->dma.req.req.error = atmci_dma_error;
++ host->dma.rx_periph_id = 0;
++ host->dma.tx_periph_id = 1;
++
++ mci_writel(host, CR, MCI_BIT(SWRST));
++ mci_writel(host, IDR, ~0UL);
++
++ platform_set_drvdata(pdev, host);
++
++ mmc_add_host(mmc);
++
++ if (host->detect_pin >= 0) {
++ setup_timer(&host->detect_timer, atmci_detect_change,
++ (unsigned long)host);
++
++ ret = request_irq(gpio_to_irq(host->detect_pin),
++ atmci_detect_interrupt,
++ IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING,
++ DRIVER_NAME, mmc);
++ if (ret) {
++ dev_dbg(&mmc->class_dev,
++ "could not request IRQ %d for detect pin\n",
++ gpio_to_irq(host->detect_pin));
++ gpio_free(host->detect_pin);
++ host->detect_pin = -1;
++ }
++ }
++
++ dev_info(&mmc->class_dev, "Atmel MCI controller at 0x%08lx irq %d\n",
++ host->mapbase, irq);
++
++ atmci_init_debugfs(host);
++
++ return 0;
++
++out_free_irq:
++ if (host->detect_pin >= 0)
++ gpio_free(host->detect_pin);
++ if (host->wp_pin >= 0)
++ gpio_free(host->wp_pin);
++ free_irq(irq, mmc);
++out_unmap:
++ iounmap(host->regs);
++out_disable_clk:
++ clk_disable(host->mck);
++ clk_put(host->mck);
++out_free_host:
++ mmc_free_host(mmc);
++ return ret;
++}
++
++static int __devexit atmci_remove(struct platform_device *pdev)
++{
++ struct atmel_mci *host = platform_get_drvdata(pdev);
++
++ platform_set_drvdata(pdev, NULL);
++
++ if (host) {
++ atmci_cleanup_debugfs(host);
++
++ if (host->detect_pin >= 0) {
++ int pin = host->detect_pin;
++
++ /* Make sure our timer doesn't enable the interrupt */
++ host->detect_pin = -1;
++ smp_wmb();
++
++ free_irq(gpio_to_irq(pin), host->mmc);
++ del_timer_sync(&host->detect_timer);
++ cancel_delayed_work(&host->mmc->detect);
++ gpio_free(pin);
++ }
++
++ mmc_remove_host(host->mmc);
++
++ mci_writel(host, IDR, ~0UL);
++ mci_writel(host, CR, MCI_BIT(MCIDIS));
++ mci_readl(host, SR);
++
++ dma_release_channel(host->dma.req.req.dmac,
++ host->dma.req.req.channel);
++
++ if (host->wp_pin >= 0)
++ gpio_free(host->wp_pin);
++
++ free_irq(platform_get_irq(pdev, 0), host->mmc);
++ iounmap(host->regs);
++
++ clk_disable(host->mck);
++ clk_put(host->mck);
++
++ mmc_free_host(host->mmc);
++ }
++ return 0;
++}
++
++static struct platform_driver atmci_driver = {
++ .probe = atmci_probe,
++ .remove = __devexit_p(atmci_remove),
++ .driver = {
++ .name = DRIVER_NAME,
++ },
++};
++
++static int __init atmci_init(void)
++{
++ return platform_driver_register(&atmci_driver);
++}
++
++static void __exit atmci_exit(void)
++{
++ platform_driver_unregister(&atmci_driver);
++}
++
++module_init(atmci_init);
++module_exit(atmci_exit);
++
++MODULE_DESCRIPTION("Atmel Multimedia Card Interface driver");
++MODULE_LICENSE("GPL");
+diff --exclude=.git -urN linux-2.6.25.6/drivers/mmc/host/atmel-mci.h avr32-2.6/drivers/mmc/host/atmel-mci.h
+--- linux-2.6.25.6/drivers/mmc/host/atmel-mci.h 1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/drivers/mmc/host/atmel-mci.h 2008-06-12 15:09:41.083816184 +0200
+@@ -0,0 +1,192 @@
++/*
++ * Atmel MultiMedia Card Interface driver
++ *
++ * Copyright (C) 2004-2006 Atmel Corporation
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 as
++ * published by the Free Software Foundation.
++ */
++#ifndef __DRIVERS_MMC_ATMEL_MCI_H__
++#define __DRIVERS_MMC_ATMEL_MCI_H__
++
++/* MCI register offsets */
++#define MCI_CR 0x0000
++#define MCI_MR 0x0004
++#define MCI_DTOR 0x0008
++#define MCI_SDCR 0x000c
++#define MCI_ARGR 0x0010
++#define MCI_CMDR 0x0014
++#define MCI_BLKR 0x0018
++#define MCI_RSPR 0x0020
++#define MCI_RSPR1 0x0024
++#define MCI_RSPR2 0x0028
++#define MCI_RSPR3 0x002c
++#define MCI_RDR 0x0030
++#define MCI_TDR 0x0034
++#define MCI_SR 0x0040
++#define MCI_IER 0x0044
++#define MCI_IDR 0x0048
++#define MCI_IMR 0x004c
++
++/* Bitfields in CR */
++#define MCI_MCIEN_OFFSET 0
++#define MCI_MCIEN_SIZE 1
++#define MCI_MCIDIS_OFFSET 1
++#define MCI_MCIDIS_SIZE 1
++#define MCI_PWSEN_OFFSET 2
++#define MCI_PWSEN_SIZE 1
++#define MCI_PWSDIS_OFFSET 3
++#define MCI_PWSDIS_SIZE 1
++#define MCI_SWRST_OFFSET 7
++#define MCI_SWRST_SIZE 1
++
++/* Bitfields in MR */
++#define MCI_CLKDIV_OFFSET 0
++#define MCI_CLKDIV_SIZE 8
++#define MCI_PWSDIV_OFFSET 8
++#define MCI_PWSDIV_SIZE 3
++#define MCI_RDPROOF_OFFSET 11
++#define MCI_RDPROOF_SIZE 1
++#define MCI_WRPROOF_OFFSET 12
++#define MCI_WRPROOF_SIZE 1
++#define MCI_DMAPADV_OFFSET 14
++#define MCI_DMAPADV_SIZE 1
++#define MCI_BLKLEN_OFFSET 16
++#define MCI_BLKLEN_SIZE 16
++
++/* Bitfields in DTOR */
++#define MCI_DTOCYC_OFFSET 0
++#define MCI_DTOCYC_SIZE 4
++#define MCI_DTOMUL_OFFSET 4
++#define MCI_DTOMUL_SIZE 3
++
++/* Bitfields in SDCR */
++#define MCI_SDCSEL_OFFSET 0
++#define MCI_SDCSEL_SIZE 4
++#define MCI_SDCBUS_OFFSET 7
++#define MCI_SDCBUS_SIZE 1
++
++/* Bitfields in ARGR */
++#define MCI_ARG_OFFSET 0
++#define MCI_ARG_SIZE 32
++
++/* Bitfields in CMDR */
++#define MCI_CMDNB_OFFSET 0
++#define MCI_CMDNB_SIZE 6
++#define MCI_RSPTYP_OFFSET 6
++#define MCI_RSPTYP_SIZE 2
++#define MCI_SPCMD_OFFSET 8
++#define MCI_SPCMD_SIZE 3
++#define MCI_OPDCMD_OFFSET 11
++#define MCI_OPDCMD_SIZE 1
++#define MCI_MAXLAT_OFFSET 12
++#define MCI_MAXLAT_SIZE 1
++#define MCI_TRCMD_OFFSET 16
++#define MCI_TRCMD_SIZE 2
++#define MCI_TRDIR_OFFSET 18
++#define MCI_TRDIR_SIZE 1
++#define MCI_TRTYP_OFFSET 19
++#define MCI_TRTYP_SIZE 2
++
++/* Bitfields in BLKR */
++#define MCI_BCNT_OFFSET 0
++#define MCI_BCNT_SIZE 16
++
++/* Bitfields in RSPRn */
++#define MCI_RSP_OFFSET 0
++#define MCI_RSP_SIZE 32
++
++/* Bitfields in SR/IER/IDR/IMR */
++#define MCI_CMDRDY_OFFSET 0
++#define MCI_CMDRDY_SIZE 1
++#define MCI_RXRDY_OFFSET 1
++#define MCI_RXRDY_SIZE 1
++#define MCI_TXRDY_OFFSET 2
++#define MCI_TXRDY_SIZE 1
++#define MCI_BLKE_OFFSET 3
++#define MCI_BLKE_SIZE 1
++#define MCI_DTIP_OFFSET 4
++#define MCI_DTIP_SIZE 1
++#define MCI_NOTBUSY_OFFSET 5
++#define MCI_NOTBUSY_SIZE 1
++#define MCI_ENDRX_OFFSET 6
++#define MCI_ENDRX_SIZE 1
++#define MCI_ENDTX_OFFSET 7
++#define MCI_ENDTX_SIZE 1
++#define MCI_RXBUFF_OFFSET 14
++#define MCI_RXBUFF_SIZE 1
++#define MCI_TXBUFE_OFFSET 15
++#define MCI_TXBUFE_SIZE 1
++#define MCI_RINDE_OFFSET 16
++#define MCI_RINDE_SIZE 1
++#define MCI_RDIRE_OFFSET 17
++#define MCI_RDIRE_SIZE 1
++#define MCI_RCRCE_OFFSET 18
++#define MCI_RCRCE_SIZE 1
++#define MCI_RENDE_OFFSET 19
++#define MCI_RENDE_SIZE 1
++#define MCI_RTOE_OFFSET 20
++#define MCI_RTOE_SIZE 1
++#define MCI_DCRCE_OFFSET 21
++#define MCI_DCRCE_SIZE 1
++#define MCI_DTOE_OFFSET 22
++#define MCI_DTOE_SIZE 1
++#define MCI_OVRE_OFFSET 30
++#define MCI_OVRE_SIZE 1
++#define MCI_UNRE_OFFSET 31
++#define MCI_UNRE_SIZE 1
++
++/* Constants for DTOMUL */
++#define MCI_DTOMUL_1_CYCLE 0
++#define MCI_DTOMUL_16_CYCLES 1
++#define MCI_DTOMUL_128_CYCLES 2
++#define MCI_DTOMUL_256_CYCLES 3
++#define MCI_DTOMUL_1024_CYCLES 4
++#define MCI_DTOMUL_4096_CYCLES 5
++#define MCI_DTOMUL_65536_CYCLES 6
++#define MCI_DTOMUL_1048576_CYCLES 7
++
++/* Constants for RSPTYP */
++#define MCI_RSPTYP_NO_RESP 0
++#define MCI_RSPTYP_48_BIT 1
++#define MCI_RSPTYP_136_BIT 2
++
++/* Constants for SPCMD */
++#define MCI_SPCMD_NO_SPEC_CMD 0
++#define MCI_SPCMD_INIT_CMD 1
++#define MCI_SPCMD_SYNC_CMD 2
++#define MCI_SPCMD_INT_CMD 4
++#define MCI_SPCMD_INT_RESP 5
++
++/* Constants for TRCMD */
++#define MCI_TRCMD_NO_TRANS 0
++#define MCI_TRCMD_START_TRANS 1
++#define MCI_TRCMD_STOP_TRANS 2
++
++/* Constants for TRTYP */
++#define MCI_TRTYP_BLOCK 0
++#define MCI_TRTYP_MULTI_BLOCK 1
++#define MCI_TRTYP_STREAM 2
++
++/* Bit manipulation macros */
++#define MCI_BIT(name) \
++ (1 << MCI_##name##_OFFSET)
++#define MCI_BF(name,value) \
++ (((value) & ((1 << MCI_##name##_SIZE) - 1)) \
++ << MCI_##name##_OFFSET)
++#define MCI_BFEXT(name,value) \
++ (((value) >> MCI_##name##_OFFSET) \
++ & ((1 << MCI_##name##_SIZE) - 1))
++#define MCI_BFINS(name,value,old) \
++ (((old) & ~(((1 << MCI_##name##_SIZE) - 1) \
++ << MCI_##name##_OFFSET)) \
++ | MCI_BF(name,value))
++
++/* Register access macros */
++#define mci_readl(port,reg) \
++ __raw_readl((port)->regs + MCI_##reg)
++#define mci_writel(port,reg,value) \
++ __raw_writel((value), (port)->regs + MCI_##reg)
++
++#endif /* __DRIVERS_MMC_ATMEL_MCI_H__ */
+diff --exclude=.git -urN linux-2.6.25.6/drivers/mmc/host/Kconfig avr32-2.6/drivers/mmc/host/Kconfig
+--- linux-2.6.25.6/drivers/mmc/host/Kconfig 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/mmc/host/Kconfig 2008-06-12 15:09:41.083816184 +0200
+@@ -91,6 +91,16 @@
+
+ If unsure, say N.
+
++config MMC_ATMELMCI
++ tristate "Atmel Multimedia Card Interface support"
++ depends on AVR32 && MMC
++ help
++ This selects the Atmel Multimedia Card Interface. If you have
++ a AT91 (ARM) or AT32 (AVR32) platform with a Multimedia Card
++ slot, say Y or M here.
++
++ If unsure, say N.
++
+ config MMC_IMX
+ tristate "Motorola i.MX Multimedia Card Interface support"
+ depends on ARCH_IMX
+diff --exclude=.git -urN linux-2.6.25.6/drivers/mmc/host/Makefile avr32-2.6/drivers/mmc/host/Makefile
+--- linux-2.6.25.6/drivers/mmc/host/Makefile 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/mmc/host/Makefile 2008-06-12 15:09:41.083816184 +0200
+@@ -15,6 +15,7 @@
+ obj-$(CONFIG_MMC_AU1X) += au1xmmc.o
+ obj-$(CONFIG_MMC_OMAP) += omap.o
+ obj-$(CONFIG_MMC_AT91) += at91_mci.o
++obj-$(CONFIG_MMC_ATMELMCI) += atmel-mci.o
+ obj-$(CONFIG_MMC_TIFM_SD) += tifm_sd.o
+ obj-$(CONFIG_MMC_SPI) += mmc_spi.o
+
+diff --exclude=.git -urN linux-2.6.25.6/drivers/mtd/nand/at91_nand.c avr32-2.6/drivers/mtd/nand/at91_nand.c
+--- linux-2.6.25.6/drivers/mtd/nand/at91_nand.c 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/mtd/nand/at91_nand.c 1970-01-01 01:00:00.000000000 +0100
+@@ -1,236 +0,0 @@
+-/*
+- * drivers/mtd/nand/at91_nand.c
+- *
+- * Copyright (C) 2003 Rick Bronson
+- *
+- * Derived from drivers/mtd/nand/autcpu12.c
+- * Copyright (c) 2001 Thomas Gleixner (gleixner@autronix.de)
+- *
+- * Derived from drivers/mtd/spia.c
+- * Copyright (C) 2000 Steven J. Hill (sjhill@cotw.com)
+- *
+- * This program is free software; you can redistribute it and/or modify
+- * it under the terms of the GNU General Public License version 2 as
+- * published by the Free Software Foundation.
+- *
+- */
+-
+-#include <linux/slab.h>
+-#include <linux/module.h>
+-#include <linux/platform_device.h>
+-#include <linux/mtd/mtd.h>
+-#include <linux/mtd/nand.h>
+-#include <linux/mtd/partitions.h>
+-
+-#include <asm/io.h>
+-#include <asm/sizes.h>
+-
+-#include <asm/hardware.h>
+-#include <asm/arch/board.h>
+-#include <asm/arch/gpio.h>
+-
+-struct at91_nand_host {
+- struct nand_chip nand_chip;
+- struct mtd_info mtd;
+- void __iomem *io_base;
+- struct at91_nand_data *board;
+-};
+-
+-/*
+- * Hardware specific access to control-lines
+- */
+-static void at91_nand_cmd_ctrl(struct mtd_info *mtd, int cmd, unsigned int ctrl)
+-{
+- struct nand_chip *nand_chip = mtd->priv;
+- struct at91_nand_host *host = nand_chip->priv;
+-
+- if (cmd == NAND_CMD_NONE)
+- return;
+-
+- if (ctrl & NAND_CLE)
+- writeb(cmd, host->io_base + (1 << host->board->cle));
+- else
+- writeb(cmd, host->io_base + (1 << host->board->ale));
+-}
+-
+-/*
+- * Read the Device Ready pin.
+- */
+-static int at91_nand_device_ready(struct mtd_info *mtd)
+-{
+- struct nand_chip *nand_chip = mtd->priv;
+- struct at91_nand_host *host = nand_chip->priv;
+-
+- return at91_get_gpio_value(host->board->rdy_pin);
+-}
+-
+-/*
+- * Enable NAND.
+- */
+-static void at91_nand_enable(struct at91_nand_host *host)
+-{
+- if (host->board->enable_pin)
+- at91_set_gpio_value(host->board->enable_pin, 0);
+-}
+-
+-/*
+- * Disable NAND.
+- */
+-static void at91_nand_disable(struct at91_nand_host *host)
+-{
+- if (host->board->enable_pin)
+- at91_set_gpio_value(host->board->enable_pin, 1);
+-}
+-
+-#ifdef CONFIG_MTD_PARTITIONS
+-const char *part_probes[] = { "cmdlinepart", NULL };
+-#endif
+-
+-/*
+- * Probe for the NAND device.
+- */
+-static int __init at91_nand_probe(struct platform_device *pdev)
+-{
+- struct at91_nand_host *host;
+- struct mtd_info *mtd;
+- struct nand_chip *nand_chip;
+- int res;
+-
+-#ifdef CONFIG_MTD_PARTITIONS
+- struct mtd_partition *partitions = NULL;
+- int num_partitions = 0;
+-#endif
+-
+- /* Allocate memory for the device structure (and zero it) */
+- host = kzalloc(sizeof(struct at91_nand_host), GFP_KERNEL);
+- if (!host) {
+- printk(KERN_ERR "at91_nand: failed to allocate device structure.\n");
+- return -ENOMEM;
+- }
+-
+- host->io_base = ioremap(pdev->resource[0].start,
+- pdev->resource[0].end - pdev->resource[0].start + 1);
+- if (host->io_base == NULL) {
+- printk(KERN_ERR "at91_nand: ioremap failed\n");
+- kfree(host);
+- return -EIO;
+- }
+-
+- mtd = &host->mtd;
+- nand_chip = &host->nand_chip;
+- host->board = pdev->dev.platform_data;
+-
+- nand_chip->priv = host; /* link the private data structures */
+- mtd->priv = nand_chip;
+- mtd->owner = THIS_MODULE;
+-
+- /* Set address of NAND IO lines */
+- nand_chip->IO_ADDR_R = host->io_base;
+- nand_chip->IO_ADDR_W = host->io_base;
+- nand_chip->cmd_ctrl = at91_nand_cmd_ctrl;
+-
+- if (host->board->rdy_pin)
+- nand_chip->dev_ready = at91_nand_device_ready;
+-
+- nand_chip->ecc.mode = NAND_ECC_SOFT; /* enable ECC */
+- nand_chip->chip_delay = 20; /* 20us command delay time */
+-
+- if (host->board->bus_width_16) /* 16-bit bus width */
+- nand_chip->options |= NAND_BUSWIDTH_16;
+-
+- platform_set_drvdata(pdev, host);
+- at91_nand_enable(host);
+-
+- if (host->board->det_pin) {
+- if (at91_get_gpio_value(host->board->det_pin)) {
+- printk ("No SmartMedia card inserted.\n");
+- res = ENXIO;
+- goto out;
+- }
+- }
+-
+- /* Scan to find existance of the device */
+- if (nand_scan(mtd, 1)) {
+- res = -ENXIO;
+- goto out;
+- }
+-
+-#ifdef CONFIG_MTD_PARTITIONS
+-#ifdef CONFIG_MTD_CMDLINE_PARTS
+- mtd->name = "at91_nand";
+- num_partitions = parse_mtd_partitions(mtd, part_probes,
+- &partitions, 0);
+-#endif
+- if (num_partitions <= 0 && host->board->partition_info)
+- partitions = host->board->partition_info(mtd->size,
+- &num_partitions);
+-
+- if ((!partitions) || (num_partitions == 0)) {
+- printk(KERN_ERR "at91_nand: No parititions defined, or unsupported device.\n");
+- res = ENXIO;
+- goto release;
+- }
+-
+- res = add_mtd_partitions(mtd, partitions, num_partitions);
+-#else
+- res = add_mtd_device(mtd);
+-#endif
+-
+- if (!res)
+- return res;
+-
+-release:
+- nand_release(mtd);
+-out:
+- at91_nand_disable(host);
+- platform_set_drvdata(pdev, NULL);
+- iounmap(host->io_base);
+- kfree(host);
+- return res;
+-}
+-
+-/*
+- * Remove a NAND device.
+- */
+-static int __devexit at91_nand_remove(struct platform_device *pdev)
+-{
+- struct at91_nand_host *host = platform_get_drvdata(pdev);
+- struct mtd_info *mtd = &host->mtd;
+-
+- nand_release(mtd);
+-
+- at91_nand_disable(host);
+-
+- iounmap(host->io_base);
+- kfree(host);
+-
+- return 0;
+-}
+-
+-static struct platform_driver at91_nand_driver = {
+- .probe = at91_nand_probe,
+- .remove = at91_nand_remove,
+- .driver = {
+- .name = "at91_nand",
+- .owner = THIS_MODULE,
+- },
+-};
+-
+-static int __init at91_nand_init(void)
+-{
+- return platform_driver_register(&at91_nand_driver);
+-}
+-
+-
+-static void __exit at91_nand_exit(void)
+-{
+- platform_driver_unregister(&at91_nand_driver);
+-}
+-
+-
+-module_init(at91_nand_init);
+-module_exit(at91_nand_exit);
+-
+-MODULE_LICENSE("GPL");
+-MODULE_AUTHOR("Rick Bronson");
+-MODULE_DESCRIPTION("NAND/SmartMedia driver for AT91RM9200");
+diff --exclude=.git -urN linux-2.6.25.6/drivers/mtd/nand/atmel_nand.c avr32-2.6/drivers/mtd/nand/atmel_nand.c
+--- linux-2.6.25.6/drivers/mtd/nand/atmel_nand.c 1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/drivers/mtd/nand/atmel_nand.c 2008-06-12 15:09:41.107815889 +0200
+@@ -0,0 +1,650 @@
++/*
++ * Copyright (C) 2003 Rick Bronson
++ *
++ * Derived from drivers/mtd/nand/autcpu12.c
++ * Copyright (c) 2001 Thomas Gleixner (gleixner@autronix.de)
++ *
++ * Derived from drivers/mtd/spia.c
++ * Copyright (C) 2000 Steven J. Hill (sjhill@cotw.com)
++ *
++ *
++ * Add Hardware ECC support for AT91SAM9260 / AT91SAM9263
++ * Richard Genoud (richard.genoud@gmail.com), Adeneo Copyright (C) 2007
++ *
++ * Derived from Das U-Boot source code
++ * (u-boot-1.1.5/board/atmel/at91sam9263ek/nand.c)
++ * (C) Copyright 2006 ATMEL Rousset, Lacressonniere Nicolas
++ *
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 as
++ * published by the Free Software Foundation.
++ *
++ */
++
++#include <linux/slab.h>
++#include <linux/module.h>
++#include <linux/platform_device.h>
++#include <linux/mtd/mtd.h>
++#include <linux/mtd/nand.h>
++#include <linux/mtd/partitions.h>
++
++#include <linux/gpio.h>
++#include <linux/io.h>
++
++#include <asm/arch/board.h>
++#include <asm/arch/cpu.h>
++
++#ifdef CONFIG_MTD_NAND_ATMEL_ECC_HW
++#define hard_ecc 1
++#else
++#define hard_ecc 0
++#endif
++
++#ifdef CONFIG_MTD_NAND_ATMEL_ECC_NONE
++#define no_ecc 1
++#else
++#define no_ecc 0
++#endif
++
++/* Register access macros */
++#define ecc_readl(add, reg) \
++ __raw_readl(add + ATMEL_ECC_##reg)
++#define ecc_writel(add, reg, value) \
++ __raw_writel((value), add + ATMEL_ECC_##reg)
++
++#include "atmel_nand_ecc.h" /* Hardware ECC registers */
++
++/* oob layout for large page size
++ * bad block info is on bytes 0 and 1
++ * the bytes have to be consecutives to avoid
++ * several NAND_CMD_RNDOUT during read
++ */
++static struct nand_ecclayout atmel_oobinfo_large = {
++ .eccbytes = 4,
++ .eccpos = {60, 61, 62, 63},
++ .oobfree = {
++ {2, 58}
++ },
++};
++
++/* oob layout for small page size
++ * bad block info is on bytes 4 and 5
++ * the bytes have to be consecutives to avoid
++ * several NAND_CMD_RNDOUT during read
++ */
++static struct nand_ecclayout atmel_oobinfo_small = {
++ .eccbytes = 4,
++ .eccpos = {0, 1, 2, 3},
++ .oobfree = {
++ {6, 10}
++ },
++};
++
++struct atmel_nand_host {
++ struct nand_chip nand_chip;
++ struct mtd_info mtd;
++ void __iomem *io_base;
++ struct atmel_nand_data *board;
++ struct device *dev;
++ void __iomem *ecc;
++};
++
++/*
++ * Enable NAND.
++ */
++static void atmel_nand_enable(struct atmel_nand_host *host)
++{
++ if (host->board->enable_pin)
++ gpio_set_value(host->board->enable_pin, 0);
++}
++
++/*
++ * Disable NAND.
++ */
++static void atmel_nand_disable(struct atmel_nand_host *host)
++{
++ if (host->board->enable_pin)
++ gpio_set_value(host->board->enable_pin, 1);
++}
++
++/*
++ * Hardware specific access to control-lines
++ */
++static void atmel_nand_cmd_ctrl(struct mtd_info *mtd, int cmd, unsigned int ctrl)
++{
++ struct nand_chip *nand_chip = mtd->priv;
++ struct atmel_nand_host *host = nand_chip->priv;
++
++ if (ctrl & NAND_CTRL_CHANGE) {
++ if (ctrl & NAND_NCE)
++ atmel_nand_enable(host);
++ else
++ atmel_nand_disable(host);
++ }
++ if (cmd == NAND_CMD_NONE)
++ return;
++
++ if (ctrl & NAND_CLE)
++ writeb(cmd, host->io_base + (1 << host->board->cle));
++ else
++ writeb(cmd, host->io_base + (1 << host->board->ale));
++}
++
++/*
++ * Read the Device Ready pin.
++ */
++static int atmel_nand_device_ready(struct mtd_info *mtd)
++{
++ struct nand_chip *nand_chip = mtd->priv;
++ struct atmel_nand_host *host = nand_chip->priv;
++
++ return gpio_get_value(host->board->rdy_pin);
++}
++
++/*
++ * Minimal-overhead PIO for data access.
++ */
++static void atmel_read_buf(struct mtd_info *mtd, u8 *buf, int len)
++{
++ struct nand_chip *nand_chip = mtd->priv;
++
++ __raw_readsb(nand_chip->IO_ADDR_R, buf, len);
++}
++
++static void atmel_read_buf16(struct mtd_info *mtd, u8 *buf, int len)
++{
++ struct nand_chip *nand_chip = mtd->priv;
++
++ __raw_readsw(nand_chip->IO_ADDR_R, buf, len / 2);
++}
++
++static void atmel_write_buf(struct mtd_info *mtd, const u8 *buf, int len)
++{
++ struct nand_chip *nand_chip = mtd->priv;
++
++ __raw_writesb(nand_chip->IO_ADDR_W, buf, len);
++}
++
++static void atmel_write_buf16(struct mtd_info *mtd, const u8 *buf, int len)
++{
++ struct nand_chip *nand_chip = mtd->priv;
++
++ __raw_writesw(nand_chip->IO_ADDR_W, buf, len / 2);
++}
++
++/*
++ * write oob for small pages
++ */
++static int atmel_nand_write_oob_512(struct mtd_info *mtd,
++ struct nand_chip *chip, int page)
++{
++ int chunk = chip->ecc.bytes + chip->ecc.prepad + chip->ecc.postpad;
++ int eccsize = chip->ecc.size, length = mtd->oobsize;
++ int len, pos, status = 0;
++ const uint8_t *bufpoi = chip->oob_poi;
++
++ pos = eccsize + chunk;
++
++ chip->cmdfunc(mtd, NAND_CMD_SEQIN, pos, page);
++ len = min_t(int, length, chunk);
++ chip->write_buf(mtd, bufpoi, len);
++ bufpoi += len;
++ length -= len;
++ if (length > 0)
++ chip->write_buf(mtd, bufpoi, length);
++
++ chip->cmdfunc(mtd, NAND_CMD_PAGEPROG, -1, -1);
++ status = chip->waitfunc(mtd, chip);
++
++ return status & NAND_STATUS_FAIL ? -EIO : 0;
++
++}
++
++/*
++ * read oob for small pages
++ */
++static int atmel_nand_read_oob_512(struct mtd_info *mtd,
++ struct nand_chip *chip, int page, int sndcmd)
++{
++ if (sndcmd) {
++ chip->cmdfunc(mtd, NAND_CMD_READOOB, 0, page);
++ sndcmd = 0;
++ }
++ chip->read_buf(mtd, chip->oob_poi, mtd->oobsize);
++ return sndcmd;
++}
++
++/*
++ * Calculate HW ECC
++ *
++ * function called after a write
++ *
++ * mtd: MTD block structure
++ * dat: raw data (unused)
++ * ecc_code: buffer for ECC
++ */
++static int atmel_nand_calculate(struct mtd_info *mtd,
++ const u_char *dat, unsigned char *ecc_code)
++{
++ struct nand_chip *nand_chip = mtd->priv;
++ struct atmel_nand_host *host = nand_chip->priv;
++ uint32_t *eccpos = nand_chip->ecc.layout->eccpos;
++ unsigned int ecc_value;
++
++ /* get the first 2 ECC bytes */
++ ecc_value = ecc_readl(host->ecc, PR);
++
++ ecc_code[eccpos[0]] = ecc_value & 0xFF;
++ ecc_code[eccpos[1]] = (ecc_value >> 8) & 0xFF;
++
++ /* get the last 2 ECC bytes */
++ ecc_value = ecc_readl(host->ecc, NPR) & ATMEL_ECC_NPARITY;
++
++ ecc_code[eccpos[2]] = ecc_value & 0xFF;
++ ecc_code[eccpos[3]] = (ecc_value >> 8) & 0xFF;
++
++ return 0;
++}
++
++/*
++ * HW ECC read page function
++ *
++ * mtd: mtd info structure
++ * chip: nand chip info structure
++ * buf: buffer to store read data
++ */
++static int atmel_nand_read_page(struct mtd_info *mtd,
++ struct nand_chip *chip, uint8_t *buf)
++{
++ int eccsize = chip->ecc.size;
++ int eccbytes = chip->ecc.bytes;
++ uint32_t *eccpos = chip->ecc.layout->eccpos;
++ uint8_t *p = buf;
++ uint8_t *oob = chip->oob_poi;
++ uint8_t *ecc_pos;
++ int stat;
++
++ /*
++ * Errata: ALE is incorrectly wired up to the ECC controller
++ * on the AP7000, so it will include the address cycles in the
++ * ECC calculation.
++ *
++ * Workaround: Reset the parity registers before reading the
++ * actual data.
++ */
++ if (cpu_is_at32ap7000()) {
++ struct atmel_nand_host *host = chip->priv;
++ ecc_writel(host->ecc, CR, ATMEL_ECC_RST);
++ }
++
++ /* read the page */
++ chip->read_buf(mtd, p, eccsize);
++
++ /* move to ECC position if needed */
++ if (eccpos[0] != 0) {
++ /* This only works on large pages
++ * because the ECC controller waits for
++ * NAND_CMD_RNDOUTSTART after the
++ * NAND_CMD_RNDOUT.
++ * anyway, for small pages, the eccpos[0] == 0
++ */
++ chip->cmdfunc(mtd, NAND_CMD_RNDOUT,
++ mtd->writesize + eccpos[0], -1);
++ }
++
++ /* the ECC controller needs to read the ECC just after the data */
++ ecc_pos = oob + eccpos[0];
++ chip->read_buf(mtd, ecc_pos, eccbytes);
++
++ /* check if there's an error */
++ stat = chip->ecc.correct(mtd, p, oob, NULL);
++
++ if (stat < 0)
++ mtd->ecc_stats.failed++;
++ else
++ mtd->ecc_stats.corrected += stat;
++
++ /* get back to oob start (end of page) */
++ chip->cmdfunc(mtd, NAND_CMD_RNDOUT, mtd->writesize, -1);
++
++ /* read the oob */
++ chip->read_buf(mtd, oob, mtd->oobsize);
++
++ return 0;
++}
++
++/*
++ * HW ECC Correction
++ *
++ * function called after a read
++ *
++ * mtd: MTD block structure
++ * dat: raw data read from the chip
++ * read_ecc: ECC from the chip (unused)
++ * isnull: unused
++ *
++ * Detect and correct a 1 bit error for a page
++ */
++static int atmel_nand_correct(struct mtd_info *mtd, u_char *dat,
++ u_char *read_ecc, u_char *isnull)
++{
++ struct nand_chip *nand_chip = mtd->priv;
++ struct atmel_nand_host *host = nand_chip->priv;
++ unsigned int ecc_status;
++ unsigned int ecc_word, ecc_bit;
++
++ /* get the status from the Status Register */
++ ecc_status = ecc_readl(host->ecc, SR);
++
++ /* if there's no error */
++ if (likely(!(ecc_status & ATMEL_ECC_RECERR)))
++ return 0;
++
++ /* get error bit offset (4 bits) */
++ ecc_bit = ecc_readl(host->ecc, PR) & ATMEL_ECC_BITADDR;
++ /* get word address (12 bits) */
++ ecc_word = ecc_readl(host->ecc, PR) & ATMEL_ECC_WORDADDR;
++ ecc_word >>= 4;
++
++ /* if there are multiple errors */
++ if (ecc_status & ATMEL_ECC_MULERR) {
++ /* check if it is a freshly erased block
++ * (filled with 0xff) */
++ if ((ecc_bit == ATMEL_ECC_BITADDR)
++ && (ecc_word == (ATMEL_ECC_WORDADDR >> 4))) {
++ /* the block has just been erased, return OK */
++ return 0;
++ }
++ /* it doesn't seems to be a freshly
++ * erased block.
++ * We can't correct so many errors */
++ dev_dbg(host->dev, "atmel_nand : multiple errors detected."
++ " Unable to correct.\n");
++ return -EIO;
++ }
++
++ /* if there's a single bit error : we can correct it */
++ if (ecc_status & ATMEL_ECC_ECCERR) {
++ /* there's nothing much to do here.
++ * the bit error is on the ECC itself.
++ */
++ dev_dbg(host->dev, "atmel_nand : one bit error on ECC code."
++ " Nothing to correct\n");
++ return 0;
++ }
++
++ dev_dbg(host->dev, "atmel_nand : one bit error on data."
++ " (word offset in the page :"
++ " 0x%x bit offset : 0x%x)\n",
++ ecc_word, ecc_bit);
++ /* correct the error */
++ if (nand_chip->options & NAND_BUSWIDTH_16) {
++ /* 16 bits words */
++ ((unsigned short *) dat)[ecc_word] ^= (1 << ecc_bit);
++ } else {
++ /* 8 bits words */
++ dat[ecc_word] ^= (1 << ecc_bit);
++ }
++ dev_dbg(host->dev, "atmel_nand : error corrected\n");
++ return 1;
++}
++
++/*
++ * Enable HW ECC : unused on most chips
++ */
++static void atmel_nand_hwctl(struct mtd_info *mtd, int mode)
++{
++ if (cpu_is_at32ap7000()) {
++ struct nand_chip *nand_chip = mtd->priv;
++ struct atmel_nand_host *host = nand_chip->priv;
++ ecc_writel(host->ecc, CR, ATMEL_ECC_RST);
++ }
++}
++
++#ifdef CONFIG_MTD_PARTITIONS
++static const char *part_probes[] = { "cmdlinepart", NULL };
++#endif
++
++/*
++ * Probe for the NAND device.
++ */
++static int __init atmel_nand_probe(struct platform_device *pdev)
++{
++ struct atmel_nand_host *host;
++ struct mtd_info *mtd;
++ struct nand_chip *nand_chip;
++ struct resource *regs;
++ struct resource *mem;
++ int res;
++
++#ifdef CONFIG_MTD_PARTITIONS
++ struct mtd_partition *partitions = NULL;
++ int num_partitions = 0;
++#endif
++
++ mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
++ if (!mem) {
++ printk(KERN_ERR "atmel_nand: can't get I/O resource mem\n");
++ return -ENXIO;
++ }
++
++ /* Allocate memory for the device structure (and zero it) */
++ host = kzalloc(sizeof(struct atmel_nand_host), GFP_KERNEL);
++ if (!host) {
++ printk(KERN_ERR "atmel_nand: failed to allocate device structure.\n");
++ return -ENOMEM;
++ }
++
++ host->io_base = ioremap(mem->start, mem->end - mem->start + 1);
++ if (host->io_base == NULL) {
++ printk(KERN_ERR "atmel_nand: ioremap failed\n");
++ res = -EIO;
++ goto err_nand_ioremap;
++ }
++
++ mtd = &host->mtd;
++ nand_chip = &host->nand_chip;
++ host->board = pdev->dev.platform_data;
++ host->dev = &pdev->dev;
++
++ nand_chip->priv = host; /* link the private data structures */
++ mtd->priv = nand_chip;
++ mtd->owner = THIS_MODULE;
++
++ /* Set address of NAND IO lines */
++ nand_chip->IO_ADDR_R = host->io_base;
++ nand_chip->IO_ADDR_W = host->io_base;
++ nand_chip->cmd_ctrl = atmel_nand_cmd_ctrl;
++
++ if (host->board->rdy_pin)
++ nand_chip->dev_ready = atmel_nand_device_ready;
++
++ regs = platform_get_resource(pdev, IORESOURCE_MEM, 1);
++ if (!regs && hard_ecc) {
++ printk(KERN_ERR "atmel_nand: can't get I/O resource "
++ "regs\nFalling back on software ECC\n");
++ }
++
++ nand_chip->ecc.mode = NAND_ECC_SOFT; /* enable ECC */
++ if (no_ecc)
++ nand_chip->ecc.mode = NAND_ECC_NONE;
++ if (hard_ecc && regs) {
++ host->ecc = ioremap(regs->start, regs->end - regs->start + 1);
++ if (host->ecc == NULL) {
++ printk(KERN_ERR "atmel_nand: ioremap failed\n");
++ res = -EIO;
++ goto err_ecc_ioremap;
++ }
++ nand_chip->ecc.mode = NAND_ECC_HW_SYNDROME;
++ nand_chip->ecc.calculate = atmel_nand_calculate;
++ nand_chip->ecc.correct = atmel_nand_correct;
++ nand_chip->ecc.hwctl = atmel_nand_hwctl;
++ nand_chip->ecc.read_page = atmel_nand_read_page;
++ nand_chip->ecc.bytes = 4;
++ nand_chip->ecc.prepad = 0;
++ nand_chip->ecc.postpad = 0;
++ }
++
++ nand_chip->chip_delay = 20; /* 20us command delay time */
++
++ if (host->board->bus_width_16) { /* 16-bit bus width */
++ nand_chip->options |= NAND_BUSWIDTH_16;
++ nand_chip->read_buf = atmel_read_buf16;
++ nand_chip->write_buf = atmel_write_buf16;
++ } else {
++ nand_chip->read_buf = atmel_read_buf;
++ nand_chip->write_buf = atmel_write_buf;
++ }
++
++ platform_set_drvdata(pdev, host);
++ atmel_nand_enable(host);
++
++ if (host->board->det_pin) {
++ if (gpio_get_value(host->board->det_pin)) {
++ printk("No SmartMedia card inserted.\n");
++ res = ENXIO;
++ goto err_no_card;
++ }
++ }
++
++ /* first scan to find the device and get the page size */
++ if (nand_scan_ident(mtd, 1)) {
++ res = -ENXIO;
++ goto err_scan_ident;
++ }
++
++ if (nand_chip->ecc.mode == NAND_ECC_HW_SYNDROME) {
++ /* ECC is calculated for the whole page (1 step) */
++ nand_chip->ecc.size = mtd->writesize;
++
++ /* set ECC page size and oob layout */
++ switch (mtd->writesize) {
++ case 512:
++ nand_chip->ecc.layout = &atmel_oobinfo_small;
++ nand_chip->ecc.read_oob = atmel_nand_read_oob_512;
++ nand_chip->ecc.write_oob = atmel_nand_write_oob_512;
++ ecc_writel(host->ecc, MR, ATMEL_ECC_PAGESIZE_528);
++ break;
++ case 1024:
++ nand_chip->ecc.layout = &atmel_oobinfo_large;
++ ecc_writel(host->ecc, MR, ATMEL_ECC_PAGESIZE_1056);
++ break;
++ case 2048:
++ nand_chip->ecc.layout = &atmel_oobinfo_large;
++ ecc_writel(host->ecc, MR, ATMEL_ECC_PAGESIZE_2112);
++ break;
++ case 4096:
++ nand_chip->ecc.layout = &atmel_oobinfo_large;
++ ecc_writel(host->ecc, MR, ATMEL_ECC_PAGESIZE_4224);
++ break;
++ default:
++ /* page size not handled by HW ECC */
++ /* switching back to soft ECC */
++ nand_chip->ecc.mode = NAND_ECC_SOFT;
++ nand_chip->ecc.calculate = NULL;
++ nand_chip->ecc.correct = NULL;
++ nand_chip->ecc.hwctl = NULL;
++ nand_chip->ecc.read_page = NULL;
++ nand_chip->ecc.postpad = 0;
++ nand_chip->ecc.prepad = 0;
++ nand_chip->ecc.bytes = 0;
++ break;
++ }
++ }
++
++ /* second phase scan */
++ if (nand_scan_tail(mtd)) {
++ res = -ENXIO;
++ goto err_scan_tail;
++ }
++
++#ifdef CONFIG_MTD_PARTITIONS
++#ifdef CONFIG_MTD_CMDLINE_PARTS
++ mtd->name = "atmel_nand";
++ num_partitions = parse_mtd_partitions(mtd, part_probes,
++ &partitions, 0);
++#endif
++ if (num_partitions <= 0 && host->board->partition_info)
++ partitions = host->board->partition_info(mtd->size,
++ &num_partitions);
++
++ if ((!partitions) || (num_partitions == 0)) {
++ printk(KERN_ERR "atmel_nand: No parititions defined, or unsupported device.\n");
++ res = ENXIO;
++ goto err_no_partitions;
++ }
++
++ res = add_mtd_partitions(mtd, partitions, num_partitions);
++#else
++ res = add_mtd_device(mtd);
++#endif
++
++ if (!res)
++ return res;
++
++#ifdef CONFIG_MTD_PARTITIONS
++err_no_partitions:
++#endif
++ nand_release(mtd);
++err_scan_tail:
++err_scan_ident:
++err_no_card:
++ atmel_nand_disable(host);
++ platform_set_drvdata(pdev, NULL);
++ if (host->ecc)
++ iounmap(host->ecc);
++err_ecc_ioremap:
++ iounmap(host->io_base);
++err_nand_ioremap:
++ kfree(host);
++ return res;
++}
++
++/*
++ * Remove a NAND device.
++ */
++static int __exit atmel_nand_remove(struct platform_device *pdev)
++{
++ struct atmel_nand_host *host = platform_get_drvdata(pdev);
++ struct mtd_info *mtd = &host->mtd;
++
++ nand_release(mtd);
++
++ atmel_nand_disable(host);
++
++ if (host->ecc)
++ iounmap(host->ecc);
++ iounmap(host->io_base);
++ kfree(host);
++
++ return 0;
++}
++
++static struct platform_driver atmel_nand_driver = {
++ .remove = __exit_p(atmel_nand_remove),
++ .driver = {
++ .name = "atmel_nand",
++ .owner = THIS_MODULE,
++ },
++};
++
++static int __init atmel_nand_init(void)
++{
++ return platform_driver_probe(&atmel_nand_driver, atmel_nand_probe);
++}
++
++
++static void __exit atmel_nand_exit(void)
++{
++ platform_driver_unregister(&atmel_nand_driver);
++}
++
++
++module_init(atmel_nand_init);
++module_exit(atmel_nand_exit);
++
++MODULE_LICENSE("GPL");
++MODULE_AUTHOR("Rick Bronson");
++MODULE_DESCRIPTION("NAND/SmartMedia driver for AT91 / AVR32");
++MODULE_ALIAS("platform:atmel_nand");
+diff --exclude=.git -urN linux-2.6.25.6/drivers/mtd/nand/atmel_nand_ecc.h avr32-2.6/drivers/mtd/nand/atmel_nand_ecc.h
+--- linux-2.6.25.6/drivers/mtd/nand/atmel_nand_ecc.h 1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/drivers/mtd/nand/atmel_nand_ecc.h 2008-06-12 15:09:41.111815840 +0200
+@@ -0,0 +1,36 @@
++/*
++ * Error Corrected Code Controller (ECC) - System peripherals regsters.
++ * Based on AT91SAM9260 datasheet revision B.
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License as published by the
++ * Free Software Foundation; either version 2 of the License, or (at your
++ * option) any later version.
++ */
++
++#ifndef ATMEL_NAND_ECC_H
++#define ATMEL_NAND_ECC_H
++
++#define ATMEL_ECC_CR 0x00 /* Control register */
++#define ATMEL_ECC_RST (1 << 0) /* Reset parity */
++
++#define ATMEL_ECC_MR 0x04 /* Mode register */
++#define ATMEL_ECC_PAGESIZE (3 << 0) /* Page Size */
++#define ATMEL_ECC_PAGESIZE_528 (0)
++#define ATMEL_ECC_PAGESIZE_1056 (1)
++#define ATMEL_ECC_PAGESIZE_2112 (2)
++#define ATMEL_ECC_PAGESIZE_4224 (3)
++
++#define ATMEL_ECC_SR 0x08 /* Status register */
++#define ATMEL_ECC_RECERR (1 << 0) /* Recoverable Error */
++#define ATMEL_ECC_ECCERR (1 << 1) /* ECC Single Bit Error */
++#define ATMEL_ECC_MULERR (1 << 2) /* Multiple Errors */
++
++#define ATMEL_ECC_PR 0x0c /* Parity register */
++#define ATMEL_ECC_BITADDR (0xf << 0) /* Bit Error Address */
++#define ATMEL_ECC_WORDADDR (0xfff << 4) /* Word Error Address */
++
++#define ATMEL_ECC_NPR 0x10 /* NParity register */
++#define ATMEL_ECC_NPARITY (0xffff << 0) /* NParity */
++
++#endif
+diff --exclude=.git -urN linux-2.6.25.6/drivers/mtd/nand/bf5xx_nand.c avr32-2.6/drivers/mtd/nand/bf5xx_nand.c
+--- linux-2.6.25.6/drivers/mtd/nand/bf5xx_nand.c 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/mtd/nand/bf5xx_nand.c 2008-06-12 15:09:41.111815840 +0200
+@@ -803,3 +803,4 @@
+ MODULE_LICENSE("GPL");
+ MODULE_AUTHOR(DRV_AUTHOR);
+ MODULE_DESCRIPTION(DRV_DESC);
++MODULE_ALIAS("platform:" DRV_NAME);
+diff --exclude=.git -urN linux-2.6.25.6/drivers/mtd/nand/Kconfig avr32-2.6/drivers/mtd/nand/Kconfig
+--- linux-2.6.25.6/drivers/mtd/nand/Kconfig 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/mtd/nand/Kconfig 2008-06-12 15:09:41.107815889 +0200
+@@ -272,12 +272,54 @@
+
+ If you say "m", the module will be called "cs553x_nand.ko".
+
+-config MTD_NAND_AT91
+- bool "Support for NAND Flash / SmartMedia on AT91"
+- depends on ARCH_AT91
++config MTD_NAND_ATMEL
++ bool "Support for NAND Flash / SmartMedia on AT91 and AVR32"
++ depends on ARCH_AT91 || AVR32
+ help
+ Enables support for NAND Flash / Smart Media Card interface
+- on Atmel AT91 processors.
++ on Atmel AT91 and AVR32 processors.
++choice
++ prompt "ECC management for NAND Flash / SmartMedia on AT91 / AVR32"
++ depends on MTD_NAND_ATMEL
++
++config MTD_NAND_ATMEL_ECC_HW
++ bool "Hardware ECC"
++ depends on ARCH_AT91SAM9263 || ARCH_AT91SAM9260 || AVR32
++ help
++ Use hardware ECC instead of software ECC when the chip
++ supports it.
++
++ The hardware ECC controller is capable of single bit error
++ correction and 2-bit random detection per page.
++
++ NB : hardware and software ECC schemes are incompatible.
++ If you switch from one to another, you'll have to erase your
++ mtd partition.
++
++ If unsure, say Y
++
++config MTD_NAND_ATMEL_ECC_SOFT
++ bool "Software ECC"
++ help
++ Use software ECC.
++
++ NB : hardware and software ECC schemes are incompatible.
++ If you switch from one to another, you'll have to erase your
++ mtd partition.
++
++config MTD_NAND_ATMEL_ECC_NONE
++ bool "No ECC (testing only, DANGEROUS)"
++ depends on DEBUG_KERNEL
++ help
++ No ECC will be used.
++ It's not a good idea and it should be reserved for testing
++ purpose only.
++
++ If unsure, say N
++
++ endchoice
++
++endchoice
+
+ config MTD_NAND_CM_X270
+ tristate "Support for NAND Flash on CM-X270 modules"
+diff --exclude=.git -urN linux-2.6.25.6/drivers/mtd/nand/Makefile avr32-2.6/drivers/mtd/nand/Makefile
+--- linux-2.6.25.6/drivers/mtd/nand/Makefile 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/mtd/nand/Makefile 2008-06-12 15:09:41.107815889 +0200
+@@ -24,7 +24,7 @@
+ obj-$(CONFIG_MTD_NAND_NANDSIM) += nandsim.o
+ obj-$(CONFIG_MTD_NAND_CS553X) += cs553x_nand.o
+ obj-$(CONFIG_MTD_NAND_NDFC) += ndfc.o
+-obj-$(CONFIG_MTD_NAND_AT91) += at91_nand.o
++obj-$(CONFIG_MTD_NAND_ATMEL) += atmel_nand.o
+ obj-$(CONFIG_MTD_NAND_CM_X270) += cmx270_nand.o
+ obj-$(CONFIG_MTD_NAND_BASLER_EXCITE) += excite_nandflash.o
+ obj-$(CONFIG_MTD_NAND_PLATFORM) += plat_nand.o
+diff --exclude=.git -urN linux-2.6.25.6/drivers/mtd/nand/ndfc.c avr32-2.6/drivers/mtd/nand/ndfc.c
+--- linux-2.6.25.6/drivers/mtd/nand/ndfc.c 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/mtd/nand/ndfc.c 2008-06-12 15:03:59.579815954 +0200
+@@ -317,3 +317,5 @@
+ MODULE_LICENSE("GPL");
+ MODULE_AUTHOR("Thomas Gleixner <tglx@linutronix.de>");
+ MODULE_DESCRIPTION("Platform driver for NDFC");
++MODULE_ALIAS("platform:ndfc-chip");
++MODULE_ALIAS("platform:ndfc-nand");
+diff --exclude=.git -urN linux-2.6.25.6/drivers/mtd/nand/orion_nand.c avr32-2.6/drivers/mtd/nand/orion_nand.c
+--- linux-2.6.25.6/drivers/mtd/nand/orion_nand.c 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/mtd/nand/orion_nand.c 2008-06-12 15:09:41.115816070 +0200
+@@ -169,3 +169,4 @@
+ MODULE_LICENSE("GPL");
+ MODULE_AUTHOR("Tzachi Perelstein");
+ MODULE_DESCRIPTION("NAND glue for Orion platforms");
++MODULE_ALIAS("platform:orion_nand");
+diff --exclude=.git -urN linux-2.6.25.6/drivers/mtd/nand/plat_nand.c avr32-2.6/drivers/mtd/nand/plat_nand.c
+--- linux-2.6.25.6/drivers/mtd/nand/plat_nand.c 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/mtd/nand/plat_nand.c 2008-06-12 15:09:41.115816070 +0200
+@@ -150,3 +150,4 @@
+ MODULE_LICENSE("GPL");
+ MODULE_AUTHOR("Vitaly Wool");
+ MODULE_DESCRIPTION("Simple generic NAND driver");
++MODULE_ALIAS("platform:gen_nand");
+diff --exclude=.git -urN linux-2.6.25.6/drivers/mtd/nand/s3c2410.c avr32-2.6/drivers/mtd/nand/s3c2410.c
+--- linux-2.6.25.6/drivers/mtd/nand/s3c2410.c 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/mtd/nand/s3c2410.c 2008-06-12 15:09:41.115816070 +0200
+@@ -927,3 +927,6 @@
+ MODULE_LICENSE("GPL");
+ MODULE_AUTHOR("Ben Dooks <ben@simtec.co.uk>");
+ MODULE_DESCRIPTION("S3C24XX MTD NAND driver");
++MODULE_ALIAS("platform:s3c2410-nand");
++MODULE_ALIAS("platform:s3c2412-nand");
++MODULE_ALIAS("platform:s3c2440-nand");
+diff --exclude=.git -urN linux-2.6.25.6/drivers/mtd/ubi/build.c avr32-2.6/drivers/mtd/ubi/build.c
+--- linux-2.6.25.6/drivers/mtd/ubi/build.c 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/mtd/ubi/build.c 2008-06-12 15:09:41.119815462 +0200
+@@ -355,15 +355,34 @@
+ }
+
+ /**
++ * free_user_volumes - free all user volumes.
++ * @ubi: UBI device description object
++ *
++ * Normally the volumes are freed at the release function of the volume device
++ * objects. However, on error paths the volumes have to be freed before the
++ * device objects have been initialized.
++ */
++static void free_user_volumes(struct ubi_device *ubi)
++{
++ int i;
++
++ for (i = 0; i < ubi->vtbl_slots; i++)
++ if (ubi->volumes[i]) {
++ kfree(ubi->volumes[i]->eba_tbl);
++ kfree(ubi->volumes[i]);
++ }
++}
++
++/**
+ * uif_init - initialize user interfaces for an UBI device.
+ * @ubi: UBI device description object
+ *
+ * This function returns zero in case of success and a negative error code in
+- * case of failure.
++ * case of failure. Note, this function destroys all volumes if it failes.
+ */
+ static int uif_init(struct ubi_device *ubi)
+ {
+- int i, err;
++ int i, err, do_free = 0;
+ dev_t dev;
+
+ sprintf(ubi->ubi_name, UBI_NAME_STR "%d", ubi->ubi_num);
+@@ -410,10 +429,13 @@
+
+ out_volumes:
+ kill_volumes(ubi);
++ do_free = 0;
+ out_sysfs:
+ ubi_sysfs_close(ubi);
+ cdev_del(&ubi->cdev);
+ out_unreg:
++ if (do_free)
++ free_user_volumes(ubi);
+ unregister_chrdev_region(ubi->cdev.dev, ubi->vtbl_slots + 1);
+ ubi_err("cannot initialize UBI %s, error %d", ubi->ubi_name, err);
+ return err;
+@@ -422,6 +444,10 @@
+ /**
+ * uif_close - close user interfaces for an UBI device.
+ * @ubi: UBI device description object
++ *
++ * Note, since this function un-registers UBI volume device objects (@vol->dev),
++ * the memory allocated voe the volumes is freed as well (in the release
++ * function).
+ */
+ static void uif_close(struct ubi_device *ubi)
+ {
+@@ -432,6 +458,21 @@
+ }
+
+ /**
++ * free_internal_volumes - free internal volumes.
++ * @ubi: UBI device description object
++ */
++static void free_internal_volumes(struct ubi_device *ubi)
++{
++ int i;
++
++ for (i = ubi->vtbl_slots;
++ i < ubi->vtbl_slots + UBI_INT_VOL_COUNT; i++) {
++ kfree(ubi->volumes[i]->eba_tbl);
++ kfree(ubi->volumes[i]);
++ }
++}
++
++/**
+ * attach_by_scanning - attach an MTD device using scanning method.
+ * @ubi: UBI device descriptor
+ *
+@@ -475,6 +516,7 @@
+ out_wl:
+ ubi_wl_close(ubi);
+ out_vtbl:
++ free_internal_volumes(ubi);
+ vfree(ubi->vtbl);
+ out_si:
+ ubi_scan_destroy_si(si);
+@@ -530,7 +572,11 @@
+ ubi->min_io_size = ubi->mtd->writesize;
+ ubi->hdrs_min_io_size = ubi->mtd->writesize >> ubi->mtd->subpage_sft;
+
+- /* Make sure minimal I/O unit is power of 2 */
++ /*
++ * Make sure minimal I/O unit is power of 2. Note, there is no
++ * fundamental reason for this assumption. It is just an optimization
++ * which allows us to avoid costly division operations.
++ */
+ if (!is_power_of_2(ubi->min_io_size)) {
+ ubi_err("min. I/O unit (%d) is not power of 2",
+ ubi->min_io_size);
+@@ -581,7 +627,7 @@
+ if (ubi->vid_hdr_offset < UBI_EC_HDR_SIZE ||
+ ubi->leb_start < ubi->vid_hdr_offset + UBI_VID_HDR_SIZE ||
+ ubi->leb_start > ubi->peb_size - UBI_VID_HDR_SIZE ||
+- ubi->leb_start % ubi->min_io_size) {
++ ubi->leb_start & (ubi->min_io_size - 1)) {
+ ubi_err("bad VID header (%d) or data offsets (%d)",
+ ubi->vid_hdr_offset, ubi->leb_start);
+ return -EINVAL;
+@@ -606,8 +652,16 @@
+ ubi->ro_mode = 1;
+ }
+
+- dbg_msg("leb_size %d", ubi->leb_size);
+- dbg_msg("ro_mode %d", ubi->ro_mode);
++ ubi_msg("physical eraseblock size: %d bytes (%d KiB)",
++ ubi->peb_size, ubi->peb_size >> 10);
++ ubi_msg("logical eraseblock size: %d bytes", ubi->leb_size);
++ ubi_msg("smallest flash I/O unit: %d", ubi->min_io_size);
++ if (ubi->hdrs_min_io_size != ubi->min_io_size)
++ ubi_msg("sub-page size: %d",
++ ubi->hdrs_min_io_size);
++ ubi_msg("VID header offset: %d (aligned %d)",
++ ubi->vid_hdr_offset, ubi->vid_hdr_aloffset);
++ ubi_msg("data offset: %d", ubi->leb_start);
+
+ /*
+ * Note, ideally, we have to initialize ubi->bad_peb_count here. But
+@@ -638,7 +692,7 @@
+
+ /*
+ * Clear the auto-resize flag in the volume in-memory copy of the
+- * volume table, and 'ubi_resize_volume()' will propogate this change
++ * volume table, and 'ubi_resize_volume()' will propagate this change
+ * to the flash.
+ */
+ ubi->vtbl[vol_id].flags &= ~UBI_VTBL_AUTORESIZE_FLG;
+@@ -647,7 +701,7 @@
+ struct ubi_vtbl_record vtbl_rec;
+
+ /*
+- * No avalilable PEBs to re-size the volume, clear the flag on
++ * No available PEBs to re-size the volume, clear the flag on
+ * flash and exit.
+ */
+ memcpy(&vtbl_rec, &ubi->vtbl[vol_id],
+@@ -680,7 +734,7 @@
+ *
+ * This function attaches MTD device @mtd_dev to UBI and assign @ubi_num number
+ * to the newly created UBI device, unless @ubi_num is %UBI_DEV_NUM_AUTO, in
+- * which case this function finds a vacant device nubert and assings it
++ * which case this function finds a vacant device number and assigns it
+ * automatically. Returns the new UBI device number in case of success and a
+ * negative error code in case of failure.
+ *
+@@ -690,7 +744,7 @@
+ int ubi_attach_mtd_dev(struct mtd_info *mtd, int ubi_num, int vid_hdr_offset)
+ {
+ struct ubi_device *ubi;
+- int i, err;
++ int i, err, do_free = 1;
+
+ /*
+ * Check if we already have the same MTD device attached.
+@@ -755,8 +809,7 @@
+ mutex_init(&ubi->volumes_mutex);
+ spin_lock_init(&ubi->volumes_lock);
+
+- dbg_msg("attaching mtd%d to ubi%d: VID header offset %d",
+- mtd->index, ubi_num, vid_hdr_offset);
++ ubi_msg("attaching mtd%d to ubi%d", mtd->index, ubi_num);
+
+ err = io_init(ubi);
+ if (err)
+@@ -791,7 +844,7 @@
+
+ err = uif_init(ubi);
+ if (err)
+- goto out_detach;
++ goto out_nofree;
+
+ ubi->bgt_thread = kthread_create(ubi_thread, ubi, ubi->bgt_name);
+ if (IS_ERR(ubi->bgt_thread)) {
+@@ -804,15 +857,8 @@
+ ubi_msg("attached mtd%d to ubi%d", mtd->index, ubi_num);
+ ubi_msg("MTD device name: \"%s\"", mtd->name);
+ ubi_msg("MTD device size: %llu MiB", ubi->flash_size >> 20);
+- ubi_msg("physical eraseblock size: %d bytes (%d KiB)",
+- ubi->peb_size, ubi->peb_size >> 10);
+- ubi_msg("logical eraseblock size: %d bytes", ubi->leb_size);
+ ubi_msg("number of good PEBs: %d", ubi->good_peb_count);
+ ubi_msg("number of bad PEBs: %d", ubi->bad_peb_count);
+- ubi_msg("smallest flash I/O unit: %d", ubi->min_io_size);
+- ubi_msg("VID header offset: %d (aligned %d)",
+- ubi->vid_hdr_offset, ubi->vid_hdr_aloffset);
+- ubi_msg("data offset: %d", ubi->leb_start);
+ ubi_msg("max. allowed volumes: %d", ubi->vtbl_slots);
+ ubi_msg("wear-leveling threshold: %d", CONFIG_MTD_UBI_WL_THRESHOLD);
+ ubi_msg("number of internal volumes: %d", UBI_INT_VOL_COUNT);
+@@ -835,9 +881,13 @@
+
+ out_uif:
+ uif_close(ubi);
++out_nofree:
++ do_free = 0;
+ out_detach:
+- ubi_eba_close(ubi);
+ ubi_wl_close(ubi);
++ if (do_free)
++ free_user_volumes(ubi);
++ free_internal_volumes(ubi);
+ vfree(ubi->vtbl);
+ out_free:
+ vfree(ubi->peb_buf1);
+@@ -899,8 +949,8 @@
+ kthread_stop(ubi->bgt_thread);
+
+ uif_close(ubi);
+- ubi_eba_close(ubi);
+ ubi_wl_close(ubi);
++ free_internal_volumes(ubi);
+ vfree(ubi->vtbl);
+ put_mtd_device(ubi->mtd);
+ vfree(ubi->peb_buf1);
+@@ -950,8 +1000,7 @@
+ BUILD_BUG_ON(sizeof(struct ubi_vid_hdr) != 64);
+
+ if (mtd_devs > UBI_MAX_DEVICES) {
+- printk(KERN_ERR "UBI error: too many MTD devices, "
+- "maximum is %d\n", UBI_MAX_DEVICES);
++ ubi_err("too many MTD devices, maximum is %d", UBI_MAX_DEVICES);
+ return -EINVAL;
+ }
+
+@@ -959,25 +1008,25 @@
+ ubi_class = class_create(THIS_MODULE, UBI_NAME_STR);
+ if (IS_ERR(ubi_class)) {
+ err = PTR_ERR(ubi_class);
+- printk(KERN_ERR "UBI error: cannot create UBI class\n");
++ ubi_err("cannot create UBI class");
+ goto out;
+ }
+
+ err = class_create_file(ubi_class, &ubi_version);
+ if (err) {
+- printk(KERN_ERR "UBI error: cannot create sysfs file\n");
++ ubi_err("cannot create sysfs file");
+ goto out_class;
+ }
+
+ err = misc_register(&ubi_ctrl_cdev);
+ if (err) {
+- printk(KERN_ERR "UBI error: cannot register device\n");
++ ubi_err("cannot register device");
+ goto out_version;
+ }
+
+ ubi_wl_entry_slab = kmem_cache_create("ubi_wl_entry_slab",
+- sizeof(struct ubi_wl_entry),
+- 0, 0, NULL);
++ sizeof(struct ubi_wl_entry),
++ 0, 0, NULL);
+ if (!ubi_wl_entry_slab)
+ goto out_dev_unreg;
+
+@@ -1000,8 +1049,7 @@
+ mutex_unlock(&ubi_devices_mutex);
+ if (err < 0) {
+ put_mtd_device(mtd);
+- printk(KERN_ERR "UBI error: cannot attach mtd%d\n",
+- mtd->index);
++ ubi_err("cannot attach mtd%d", mtd->index);
+ goto out_detach;
+ }
+ }
+@@ -1023,7 +1071,7 @@
+ out_class:
+ class_destroy(ubi_class);
+ out:
+- printk(KERN_ERR "UBI error: cannot initialize UBI, error %d\n", err);
++ ubi_err("UBI error: cannot initialize UBI, error %d", err);
+ return err;
+ }
+ module_init(ubi_init);
+diff --exclude=.git -urN linux-2.6.25.6/drivers/mtd/ubi/cdev.c avr32-2.6/drivers/mtd/ubi/cdev.c
+--- linux-2.6.25.6/drivers/mtd/ubi/cdev.c 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/mtd/ubi/cdev.c 2008-06-12 15:09:41.119815462 +0200
+@@ -290,7 +290,7 @@
+ off = do_div(tmp, vol->usable_leb_size);
+ lnum = tmp;
+
+- if (off % ubi->min_io_size) {
++ if (off & (ubi->min_io_size - 1)) {
+ dbg_err("unaligned position");
+ return -EINVAL;
+ }
+@@ -299,7 +299,7 @@
+ count_save = count = vol->used_bytes - *offp;
+
+ /* We can write only in fractions of the minimum I/O unit */
+- if (count % ubi->min_io_size) {
++ if (count & (ubi->min_io_size - 1)) {
+ dbg_err("unaligned write length");
+ return -EINVAL;
+ }
+@@ -559,7 +559,7 @@
+ if (req->alignment > ubi->leb_size)
+ goto bad;
+
+- n = req->alignment % ubi->min_io_size;
++ n = req->alignment & (ubi->min_io_size - 1);
+ if (req->alignment != 1 && n)
+ goto bad;
+
+diff --exclude=.git -urN linux-2.6.25.6/drivers/mtd/ubi/debug.h avr32-2.6/drivers/mtd/ubi/debug.h
+--- linux-2.6.25.6/drivers/mtd/ubi/debug.h 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/mtd/ubi/debug.h 2008-06-12 15:09:41.123815692 +0200
+@@ -99,8 +99,10 @@
+ #ifdef CONFIG_MTD_UBI_DEBUG_MSG_BLD
+ /* Initialization and build messages */
+ #define dbg_bld(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
++#define UBI_IO_DEBUG 1
+ #else
+ #define dbg_bld(fmt, ...) ({})
++#define UBI_IO_DEBUG 0
+ #endif
+
+ #ifdef CONFIG_MTD_UBI_DEBUG_EMULATE_BITFLIPS
+diff --exclude=.git -urN linux-2.6.25.6/drivers/mtd/ubi/eba.c avr32-2.6/drivers/mtd/ubi/eba.c
+--- linux-2.6.25.6/drivers/mtd/ubi/eba.c 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/mtd/ubi/eba.c 2008-06-12 15:09:41.123815692 +0200
+@@ -752,7 +752,7 @@
+ /* If this is the last LEB @len may be unaligned */
+ len = ALIGN(data_size, ubi->min_io_size);
+ else
+- ubi_assert(len % ubi->min_io_size == 0);
++ ubi_assert(!(len & (ubi->min_io_size - 1)));
+
+ vid_hdr = ubi_zalloc_vid_hdr(ubi, GFP_NOFS);
+ if (!vid_hdr)
+@@ -1233,20 +1233,3 @@
+ }
+ return err;
+ }
+-
+-/**
+- * ubi_eba_close - close EBA unit.
+- * @ubi: UBI device description object
+- */
+-void ubi_eba_close(const struct ubi_device *ubi)
+-{
+- int i, num_volumes = ubi->vtbl_slots + UBI_INT_VOL_COUNT;
+-
+- dbg_eba("close EBA unit");
+-
+- for (i = 0; i < num_volumes; i++) {
+- if (!ubi->volumes[i])
+- continue;
+- kfree(ubi->volumes[i]->eba_tbl);
+- }
+-}
+diff --exclude=.git -urN linux-2.6.25.6/drivers/mtd/ubi/gluebi.c avr32-2.6/drivers/mtd/ubi/gluebi.c
+--- linux-2.6.25.6/drivers/mtd/ubi/gluebi.c 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/mtd/ubi/gluebi.c 2008-06-12 15:03:59.587815297 +0200
+@@ -291,11 +291,12 @@
+ /*
+ * In case of dynamic volume, MTD device size is just volume size. In
+ * case of a static volume the size is equivalent to the amount of data
+- * bytes, which is zero at this moment and will be changed after volume
+- * update.
++ * bytes.
+ */
+ if (vol->vol_type == UBI_DYNAMIC_VOLUME)
+ mtd->size = vol->usable_leb_size * vol->reserved_pebs;
++ else
++ mtd->size = vol->used_bytes;
+
+ if (add_mtd_device(mtd)) {
+ ubi_err("cannot not add MTD device\n");
+diff --exclude=.git -urN linux-2.6.25.6/drivers/mtd/ubi/io.c avr32-2.6/drivers/mtd/ubi/io.c
+--- linux-2.6.25.6/drivers/mtd/ubi/io.c 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/mtd/ubi/io.c 2008-06-12 15:03:59.587815297 +0200
+@@ -631,6 +631,8 @@
+
+ dbg_io("read EC header from PEB %d", pnum);
+ ubi_assert(pnum >= 0 && pnum < ubi->peb_count);
++ if (UBI_IO_DEBUG)
++ verbose = 1;
+
+ err = ubi_io_read(ubi, ec_hdr, pnum, 0, UBI_EC_HDR_SIZE);
+ if (err) {
+@@ -904,6 +906,8 @@
+
+ dbg_io("read VID header from PEB %d", pnum);
+ ubi_assert(pnum >= 0 && pnum < ubi->peb_count);
++ if (UBI_IO_DEBUG)
++ verbose = 1;
+
+ p = (char *)vid_hdr - ubi->vid_hdr_shift;
+ err = ubi_io_read(ubi, p, pnum, ubi->vid_hdr_aloffset,
+diff --exclude=.git -urN linux-2.6.25.6/drivers/mtd/ubi/kapi.c avr32-2.6/drivers/mtd/ubi/kapi.c
+--- linux-2.6.25.6/drivers/mtd/ubi/kapi.c 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/mtd/ubi/kapi.c 2008-06-12 15:09:41.123815692 +0200
+@@ -397,8 +397,8 @@
+ return -EROFS;
+
+ if (lnum < 0 || lnum >= vol->reserved_pebs || offset < 0 || len < 0 ||
+- offset + len > vol->usable_leb_size || offset % ubi->min_io_size ||
+- len % ubi->min_io_size)
++ offset + len > vol->usable_leb_size ||
++ offset & (ubi->min_io_size - 1) || len & (ubi->min_io_size - 1))
+ return -EINVAL;
+
+ if (dtype != UBI_LONGTERM && dtype != UBI_SHORTTERM &&
+@@ -447,7 +447,7 @@
+ return -EROFS;
+
+ if (lnum < 0 || lnum >= vol->reserved_pebs || len < 0 ||
+- len > vol->usable_leb_size || len % ubi->min_io_size)
++ len > vol->usable_leb_size || len & (ubi->min_io_size - 1))
+ return -EINVAL;
+
+ if (dtype != UBI_LONGTERM && dtype != UBI_SHORTTERM &&
+diff --exclude=.git -urN linux-2.6.25.6/drivers/mtd/ubi/Kconfig avr32-2.6/drivers/mtd/ubi/Kconfig
+--- linux-2.6.25.6/drivers/mtd/ubi/Kconfig 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/mtd/ubi/Kconfig 2008-06-12 15:03:59.583815905 +0200
+@@ -24,8 +24,13 @@
+ erase counter value and the lowest erase counter value of eraseblocks
+ of UBI devices. When this threshold is exceeded, UBI starts performing
+ wear leveling by means of moving data from eraseblock with low erase
+- counter to eraseblocks with high erase counter. Leave the default
+- value if unsure.
++ counter to eraseblocks with high erase counter.
++
++ The default value should be OK for SLC NAND flashes, NOR flashes and
++ other flashes which have eraseblock life-cycle 100000 or more.
++ However, in case of MLC NAND flashes which typically have eraseblock
++ life-cycle less then 10000, the threshold should be lessened (e.g.,
++ to 128 or 256, although it does not have to be power of 2).
+
+ config MTD_UBI_BEB_RESERVE
+ int "Percentage of reserved eraseblocks for bad eraseblocks handling"
+diff --exclude=.git -urN linux-2.6.25.6/drivers/mtd/ubi/misc.c avr32-2.6/drivers/mtd/ubi/misc.c
+--- linux-2.6.25.6/drivers/mtd/ubi/misc.c 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/mtd/ubi/misc.c 2008-06-12 15:09:41.123815692 +0200
+@@ -37,7 +37,7 @@
+ {
+ int i;
+
+- ubi_assert(length % ubi->min_io_size == 0);
++ ubi_assert(!(length & (ubi->min_io_size - 1)));
+
+ for (i = length - 1; i >= 0; i--)
+ if (((const uint8_t *)buf)[i] != 0xFF)
+diff --exclude=.git -urN linux-2.6.25.6/drivers/mtd/ubi/scan.c avr32-2.6/drivers/mtd/ubi/scan.c
+--- linux-2.6.25.6/drivers/mtd/ubi/scan.c 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/mtd/ubi/scan.c 2008-06-12 15:03:59.587815297 +0200
+@@ -42,6 +42,7 @@
+
+ #include <linux/err.h>
+ #include <linux/crc32.h>
++#include <asm/div64.h>
+ #include "ubi.h"
+
+ #ifdef CONFIG_MTD_UBI_DEBUG_PARANOID
+@@ -92,27 +93,6 @@
+ }
+
+ /**
+- * commit_to_mean_value - commit intermediate results to the final mean erase
+- * counter value.
+- * @si: scanning information
+- *
+- * This is a helper function which calculates partial mean erase counter mean
+- * value and adds it to the resulting mean value. As we can work only in
+- * integer arithmetic and we want to calculate the mean value of erase counter
+- * accurately, we first sum erase counter values in @si->ec_sum variable and
+- * count these components in @si->ec_count. If this temporary @si->ec_sum is
+- * going to overflow, we calculate the partial mean value
+- * (@si->ec_sum/@si->ec_count) and add it to @si->mean_ec.
+- */
+-static void commit_to_mean_value(struct ubi_scan_info *si)
+-{
+- si->ec_sum /= si->ec_count;
+- if (si->ec_sum % si->ec_count >= si->ec_count / 2)
+- si->mean_ec += 1;
+- si->mean_ec += si->ec_sum;
+-}
+-
+-/**
+ * validate_vid_hdr - check that volume identifier header is correct and
+ * consistent.
+ * @vid_hdr: the volume identifier header to check
+@@ -901,15 +881,8 @@
+
+ adjust_mean_ec:
+ if (!ec_corr) {
+- if (si->ec_sum + ec < ec) {
+- commit_to_mean_value(si);
+- si->ec_sum = 0;
+- si->ec_count = 0;
+- } else {
+- si->ec_sum += ec;
+- si->ec_count += 1;
+- }
+-
++ si->ec_sum += ec;
++ si->ec_count += 1;
+ if (ec > si->max_ec)
+ si->max_ec = ec;
+ if (ec < si->min_ec)
+@@ -965,9 +938,11 @@
+
+ dbg_msg("scanning is finished");
+
+- /* Finish mean erase counter calculations */
+- if (si->ec_count)
+- commit_to_mean_value(si);
++ /* Calculate mean erase counter */
++ if (si->ec_count) {
++ do_div(si->ec_sum, si->ec_count);
++ si->mean_ec = si->ec_sum;
++ }
+
+ if (si->is_empty)
+ ubi_msg("empty MTD device detected");
+diff --exclude=.git -urN linux-2.6.25.6/drivers/mtd/ubi/scan.h avr32-2.6/drivers/mtd/ubi/scan.h
+--- linux-2.6.25.6/drivers/mtd/ubi/scan.h 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/mtd/ubi/scan.h 2008-06-12 15:03:59.587815297 +0200
+@@ -124,7 +124,7 @@
+ int max_ec;
+ unsigned long long max_sqnum;
+ int mean_ec;
+- int ec_sum;
++ uint64_t ec_sum;
+ int ec_count;
+ };
+
+diff --exclude=.git -urN linux-2.6.25.6/drivers/mtd/ubi/ubi.h avr32-2.6/drivers/mtd/ubi/ubi.h
+--- linux-2.6.25.6/drivers/mtd/ubi/ubi.h 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/mtd/ubi/ubi.h 2008-06-12 15:09:41.123815692 +0200
+@@ -37,10 +37,9 @@
+ #include <linux/string.h>
+ #include <linux/vmalloc.h>
+ #include <linux/mtd/mtd.h>
+-
+-#include <mtd/ubi-header.h>
+ #include <linux/mtd/ubi.h>
+
++#include "ubi-media.h"
+ #include "scan.h"
+ #include "debug.h"
+
+@@ -478,7 +477,6 @@
+ int ubi_eba_copy_leb(struct ubi_device *ubi, int from, int to,
+ struct ubi_vid_hdr *vid_hdr);
+ int ubi_eba_init_scan(struct ubi_device *ubi, struct ubi_scan_info *si);
+-void ubi_eba_close(const struct ubi_device *ubi);
+
+ /* wl.c */
+ int ubi_wl_get_peb(struct ubi_device *ubi, int dtype);
+diff --exclude=.git -urN linux-2.6.25.6/drivers/mtd/ubi/ubi-media.h avr32-2.6/drivers/mtd/ubi/ubi-media.h
+--- linux-2.6.25.6/drivers/mtd/ubi/ubi-media.h 1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/drivers/mtd/ubi/ubi-media.h 2008-06-12 15:03:59.587815297 +0200
+@@ -0,0 +1,372 @@
++/*
++ * Copyright (c) International Business Machines Corp., 2006
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License as published by
++ * the Free Software Foundation; either version 2 of the License, or
++ * (at your option) any later version.
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
++ * the GNU General Public License for more details.
++ *
++ * You should have received a copy of the GNU General Public License
++ * along with this program; if not, write to the Free Software
++ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
++ *
++ * Authors: Artem Bityutskiy (Битюцкий Артём)
++ * Thomas Gleixner
++ * Frank Haverkamp
++ * Oliver Lohmann
++ * Andreas Arnez
++ */
++
++/*
++ * This file defines the layout of UBI headers and all the other UBI on-flash
++ * data structures.
++ */
++
++#ifndef __UBI_MEDIA_H__
++#define __UBI_MEDIA_H__
++
++#include <asm/byteorder.h>
++
++/* The version of UBI images supported by this implementation */
++#define UBI_VERSION 1
++
++/* The highest erase counter value supported by this implementation */
++#define UBI_MAX_ERASECOUNTER 0x7FFFFFFF
++
++/* The initial CRC32 value used when calculating CRC checksums */
++#define UBI_CRC32_INIT 0xFFFFFFFFU
++
++/* Erase counter header magic number (ASCII "UBI#") */
++#define UBI_EC_HDR_MAGIC 0x55424923
++/* Volume identifier header magic number (ASCII "UBI!") */
++#define UBI_VID_HDR_MAGIC 0x55424921
++
++/*
++ * Volume type constants used in the volume identifier header.
++ *
++ * @UBI_VID_DYNAMIC: dynamic volume
++ * @UBI_VID_STATIC: static volume
++ */
++enum {
++ UBI_VID_DYNAMIC = 1,
++ UBI_VID_STATIC = 2
++};
++
++/*
++ * Volume flags used in the volume table record.
++ *
++ * @UBI_VTBL_AUTORESIZE_FLG: auto-resize this volume
++ *
++ * %UBI_VTBL_AUTORESIZE_FLG flag can be set only for one volume in the volume
++ * table. UBI automatically re-sizes the volume which has this flag and makes
++ * the volume to be of largest possible size. This means that if after the
++ * initialization UBI finds out that there are available physical eraseblocks
++ * present on the device, it automatically appends all of them to the volume
++ * (the physical eraseblocks reserved for bad eraseblocks handling and other
++ * reserved physical eraseblocks are not taken). So, if there is a volume with
++ * the %UBI_VTBL_AUTORESIZE_FLG flag set, the amount of available logical
++ * eraseblocks will be zero after UBI is loaded, because all of them will be
++ * reserved for this volume. Note, the %UBI_VTBL_AUTORESIZE_FLG bit is cleared
++ * after the volume had been initialized.
++ *
++ * The auto-resize feature is useful for device production purposes. For
++ * example, different NAND flash chips may have different amount of initial bad
++ * eraseblocks, depending of particular chip instance. Manufacturers of NAND
++ * chips usually guarantee that the amount of initial bad eraseblocks does not
++ * exceed certain percent, e.g. 2%. When one creates an UBI image which will be
++ * flashed to the end devices in production, he does not know the exact amount
++ * of good physical eraseblocks the NAND chip on the device will have, but this
++ * number is required to calculate the volume sized and put them to the volume
++ * table of the UBI image. In this case, one of the volumes (e.g., the one
++ * which will store the root file system) is marked as "auto-resizable", and
++ * UBI will adjust its size on the first boot if needed.
++ *
++ * Note, first UBI reserves some amount of physical eraseblocks for bad
++ * eraseblock handling, and then re-sizes the volume, not vice-versa. This
++ * means that the pool of reserved physical eraseblocks will always be present.
++ */
++enum {
++ UBI_VTBL_AUTORESIZE_FLG = 0x01,
++};
++
++/*
++ * Compatibility constants used by internal volumes.
++ *
++ * @UBI_COMPAT_DELETE: delete this internal volume before anything is written
++ * to the flash
++ * @UBI_COMPAT_RO: attach this device in read-only mode
++ * @UBI_COMPAT_PRESERVE: preserve this internal volume - do not touch its
++ * physical eraseblocks, don't allow the wear-leveling unit to move them
++ * @UBI_COMPAT_REJECT: reject this UBI image
++ */
++enum {
++ UBI_COMPAT_DELETE = 1,
++ UBI_COMPAT_RO = 2,
++ UBI_COMPAT_PRESERVE = 4,
++ UBI_COMPAT_REJECT = 5
++};
++
++/* Sizes of UBI headers */
++#define UBI_EC_HDR_SIZE sizeof(struct ubi_ec_hdr)
++#define UBI_VID_HDR_SIZE sizeof(struct ubi_vid_hdr)
++
++/* Sizes of UBI headers without the ending CRC */
++#define UBI_EC_HDR_SIZE_CRC (UBI_EC_HDR_SIZE - sizeof(__be32))
++#define UBI_VID_HDR_SIZE_CRC (UBI_VID_HDR_SIZE - sizeof(__be32))
++
++/**
++ * struct ubi_ec_hdr - UBI erase counter header.
++ * @magic: erase counter header magic number (%UBI_EC_HDR_MAGIC)
++ * @version: version of UBI implementation which is supposed to accept this
++ * UBI image
++ * @padding1: reserved for future, zeroes
++ * @ec: the erase counter
++ * @vid_hdr_offset: where the VID header starts
++ * @data_offset: where the user data start
++ * @padding2: reserved for future, zeroes
++ * @hdr_crc: erase counter header CRC checksum
++ *
++ * The erase counter header takes 64 bytes and has a plenty of unused space for
++ * future usage. The unused fields are zeroed. The @version field is used to
++ * indicate the version of UBI implementation which is supposed to be able to
++ * work with this UBI image. If @version is greater then the current UBI
++ * version, the image is rejected. This may be useful in future if something
++ * is changed radically. This field is duplicated in the volume identifier
++ * header.
++ *
++ * The @vid_hdr_offset and @data_offset fields contain the offset of the the
++ * volume identifier header and user data, relative to the beginning of the
++ * physical eraseblock. These values have to be the same for all physical
++ * eraseblocks.
++ */
++struct ubi_ec_hdr {
++ __be32 magic;
++ __u8 version;
++ __u8 padding1[3];
++ __be64 ec; /* Warning: the current limit is 31-bit anyway! */
++ __be32 vid_hdr_offset;
++ __be32 data_offset;
++ __u8 padding2[36];
++ __be32 hdr_crc;
++} __attribute__ ((packed));
++
++/**
++ * struct ubi_vid_hdr - on-flash UBI volume identifier header.
++ * @magic: volume identifier header magic number (%UBI_VID_HDR_MAGIC)
++ * @version: UBI implementation version which is supposed to accept this UBI
++ * image (%UBI_VERSION)
++ * @vol_type: volume type (%UBI_VID_DYNAMIC or %UBI_VID_STATIC)
++ * @copy_flag: if this logical eraseblock was copied from another physical
++ * eraseblock (for wear-leveling reasons)
++ * @compat: compatibility of this volume (%0, %UBI_COMPAT_DELETE,
++ * %UBI_COMPAT_IGNORE, %UBI_COMPAT_PRESERVE, or %UBI_COMPAT_REJECT)
++ * @vol_id: ID of this volume
++ * @lnum: logical eraseblock number
++ * @leb_ver: version of this logical eraseblock (IMPORTANT: obsolete, to be
++ * removed, kept only for not breaking older UBI users)
++ * @data_size: how many bytes of data this logical eraseblock contains
++ * @used_ebs: total number of used logical eraseblocks in this volume
++ * @data_pad: how many bytes at the end of this physical eraseblock are not
++ * used
++ * @data_crc: CRC checksum of the data stored in this logical eraseblock
++ * @padding1: reserved for future, zeroes
++ * @sqnum: sequence number
++ * @padding2: reserved for future, zeroes
++ * @hdr_crc: volume identifier header CRC checksum
++ *
++ * The @sqnum is the value of the global sequence counter at the time when this
++ * VID header was created. The global sequence counter is incremented each time
++ * UBI writes a new VID header to the flash, i.e. when it maps a logical
++ * eraseblock to a new physical eraseblock. The global sequence counter is an
++ * unsigned 64-bit integer and we assume it never overflows. The @sqnum
++ * (sequence number) is used to distinguish between older and newer versions of
++ * logical eraseblocks.
++ *
++ * There are 2 situations when there may be more then one physical eraseblock
++ * corresponding to the same logical eraseblock, i.e., having the same @vol_id
++ * and @lnum values in the volume identifier header. Suppose we have a logical
++ * eraseblock L and it is mapped to the physical eraseblock P.
++ *
++ * 1. Because UBI may erase physical eraseblocks asynchronously, the following
++ * situation is possible: L is asynchronously erased, so P is scheduled for
++ * erasure, then L is written to,i.e. mapped to another physical eraseblock P1,
++ * so P1 is written to, then an unclean reboot happens. Result - there are 2
++ * physical eraseblocks P and P1 corresponding to the same logical eraseblock
++ * L. But P1 has greater sequence number, so UBI picks P1 when it attaches the
++ * flash.
++ *
++ * 2. From time to time UBI moves logical eraseblocks to other physical
++ * eraseblocks for wear-leveling reasons. If, for example, UBI moves L from P
++ * to P1, and an unclean reboot happens before P is physically erased, there
++ * are two physical eraseblocks P and P1 corresponding to L and UBI has to
++ * select one of them when the flash is attached. The @sqnum field says which
++ * PEB is the original (obviously P will have lower @sqnum) and the copy. But
++ * it is not enough to select the physical eraseblock with the higher sequence
++ * number, because the unclean reboot could have happen in the middle of the
++ * copying process, so the data in P is corrupted. It is also not enough to
++ * just select the physical eraseblock with lower sequence number, because the
++ * data there may be old (consider a case if more data was added to P1 after
++ * the copying). Moreover, the unclean reboot may happen when the erasure of P
++ * was just started, so it result in unstable P, which is "mostly" OK, but
++ * still has unstable bits.
++ *
++ * UBI uses the @copy_flag field to indicate that this logical eraseblock is a
++ * copy. UBI also calculates data CRC when the data is moved and stores it at
++ * the @data_crc field of the copy (P1). So when UBI needs to pick one physical
++ * eraseblock of two (P or P1), the @copy_flag of the newer one (P1) is
++ * examined. If it is cleared, the situation* is simple and the newer one is
++ * picked. If it is set, the data CRC of the copy (P1) is examined. If the CRC
++ * checksum is correct, this physical eraseblock is selected (P1). Otherwise
++ * the older one (P) is selected.
++ *
++ * Note, there is an obsolete @leb_ver field which was used instead of @sqnum
++ * in the past. But it is not used anymore and we keep it in order to be able
++ * to deal with old UBI images. It will be removed at some point.
++ *
++ * There are 2 sorts of volumes in UBI: user volumes and internal volumes.
++ * Internal volumes are not seen from outside and are used for various internal
++ * UBI purposes. In this implementation there is only one internal volume - the
++ * layout volume. Internal volumes are the main mechanism of UBI extensions.
++ * For example, in future one may introduce a journal internal volume. Internal
++ * volumes have their own reserved range of IDs.
++ *
++ * The @compat field is only used for internal volumes and contains the "degree
++ * of their compatibility". It is always zero for user volumes. This field
++ * provides a mechanism to introduce UBI extensions and to be still compatible
++ * with older UBI binaries. For example, if someone introduced a journal in
++ * future, he would probably use %UBI_COMPAT_DELETE compatibility for the
++ * journal volume. And in this case, older UBI binaries, which know nothing
++ * about the journal volume, would just delete this volume and work perfectly
++ * fine. This is similar to what Ext2fs does when it is fed by an Ext3fs image
++ * - it just ignores the Ext3fs journal.
++ *
++ * The @data_crc field contains the CRC checksum of the contents of the logical
++ * eraseblock if this is a static volume. In case of dynamic volumes, it does
++ * not contain the CRC checksum as a rule. The only exception is when the
++ * data of the physical eraseblock was moved by the wear-leveling unit, then
++ * the wear-leveling unit calculates the data CRC and stores it in the
++ * @data_crc field. And of course, the @copy_flag is %in this case.
++ *
++ * The @data_size field is used only for static volumes because UBI has to know
++ * how many bytes of data are stored in this eraseblock. For dynamic volumes,
++ * this field usually contains zero. The only exception is when the data of the
++ * physical eraseblock was moved to another physical eraseblock for
++ * wear-leveling reasons. In this case, UBI calculates CRC checksum of the
++ * contents and uses both @data_crc and @data_size fields. In this case, the
++ * @data_size field contains data size.
++ *
++ * The @used_ebs field is used only for static volumes and indicates how many
++ * eraseblocks the data of the volume takes. For dynamic volumes this field is
++ * not used and always contains zero.
++ *
++ * The @data_pad is calculated when volumes are created using the alignment
++ * parameter. So, effectively, the @data_pad field reduces the size of logical
++ * eraseblocks of this volume. This is very handy when one uses block-oriented
++ * software (say, cramfs) on top of the UBI volume.
++ */
++struct ubi_vid_hdr {
++ __be32 magic;
++ __u8 version;
++ __u8 vol_type;
++ __u8 copy_flag;
++ __u8 compat;
++ __be32 vol_id;
++ __be32 lnum;
++ __be32 leb_ver; /* obsolete, to be removed, don't use */
++ __be32 data_size;
++ __be32 used_ebs;
++ __be32 data_pad;
++ __be32 data_crc;
++ __u8 padding1[4];
++ __be64 sqnum;
++ __u8 padding2[12];
++ __be32 hdr_crc;
++} __attribute__ ((packed));
++
++/* Internal UBI volumes count */
++#define UBI_INT_VOL_COUNT 1
++
++/*
++ * Starting ID of internal volumes. There is reserved room for 4096 internal
++ * volumes.
++ */
++#define UBI_INTERNAL_VOL_START (0x7FFFFFFF - 4096)
++
++/* The layout volume contains the volume table */
++
++#define UBI_LAYOUT_VOLUME_ID UBI_INTERNAL_VOL_START
++#define UBI_LAYOUT_VOLUME_TYPE UBI_VID_DYNAMIC
++#define UBI_LAYOUT_VOLUME_ALIGN 1
++#define UBI_LAYOUT_VOLUME_EBS 2
++#define UBI_LAYOUT_VOLUME_NAME "layout volume"
++#define UBI_LAYOUT_VOLUME_COMPAT UBI_COMPAT_REJECT
++
++/* The maximum number of volumes per one UBI device */
++#define UBI_MAX_VOLUMES 128
++
++/* The maximum volume name length */
++#define UBI_VOL_NAME_MAX 127
++
++/* Size of the volume table record */
++#define UBI_VTBL_RECORD_SIZE sizeof(struct ubi_vtbl_record)
++
++/* Size of the volume table record without the ending CRC */
++#define UBI_VTBL_RECORD_SIZE_CRC (UBI_VTBL_RECORD_SIZE - sizeof(__be32))
++
++/**
++ * struct ubi_vtbl_record - a record in the volume table.
++ * @reserved_pebs: how many physical eraseblocks are reserved for this volume
++ * @alignment: volume alignment
++ * @data_pad: how many bytes are unused at the end of the each physical
++ * eraseblock to satisfy the requested alignment
++ * @vol_type: volume type (%UBI_DYNAMIC_VOLUME or %UBI_STATIC_VOLUME)
++ * @upd_marker: if volume update was started but not finished
++ * @name_len: volume name length
++ * @name: the volume name
++ * @flags: volume flags (%UBI_VTBL_AUTORESIZE_FLG)
++ * @padding: reserved, zeroes
++ * @crc: a CRC32 checksum of the record
++ *
++ * The volume table records are stored in the volume table, which is stored in
++ * the layout volume. The layout volume consists of 2 logical eraseblock, each
++ * of which contains a copy of the volume table (i.e., the volume table is
++ * duplicated). The volume table is an array of &struct ubi_vtbl_record
++ * objects indexed by the volume ID.
++ *
++ * If the size of the logical eraseblock is large enough to fit
++ * %UBI_MAX_VOLUMES records, the volume table contains %UBI_MAX_VOLUMES
++ * records. Otherwise, it contains as many records as it can fit (i.e., size of
++ * logical eraseblock divided by sizeof(struct ubi_vtbl_record)).
++ *
++ * The @upd_marker flag is used to implement volume update. It is set to %1
++ * before update and set to %0 after the update. So if the update operation was
++ * interrupted, UBI knows that the volume is corrupted.
++ *
++ * The @alignment field is specified when the volume is created and cannot be
++ * later changed. It may be useful, for example, when a block-oriented file
++ * system works on top of UBI. The @data_pad field is calculated using the
++ * logical eraseblock size and @alignment. The alignment must be multiple to the
++ * minimal flash I/O unit. If @alignment is 1, all the available space of
++ * the physical eraseblocks is used.
++ *
++ * Empty records contain all zeroes and the CRC checksum of those zeroes.
++ */
++struct ubi_vtbl_record {
++ __be32 reserved_pebs;
++ __be32 alignment;
++ __be32 data_pad;
++ __u8 vol_type;
++ __u8 upd_marker;
++ __be16 name_len;
++ __u8 name[UBI_VOL_NAME_MAX+1];
++ __u8 flags;
++ __u8 padding[23];
++ __be32 crc;
++} __attribute__ ((packed));
++
++#endif /* !__UBI_MEDIA_H__ */
+diff --exclude=.git -urN linux-2.6.25.6/drivers/mtd/ubi/upd.c avr32-2.6/drivers/mtd/ubi/upd.c
+--- linux-2.6.25.6/drivers/mtd/ubi/upd.c 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/mtd/ubi/upd.c 2008-06-12 15:09:41.123815692 +0200
+@@ -237,10 +237,10 @@
+ int err;
+
+ if (vol->vol_type == UBI_DYNAMIC_VOLUME) {
+- len = ALIGN(len, ubi->min_io_size);
+- memset(buf + len, 0xFF, len - len);
++ int l = ALIGN(len, ubi->min_io_size);
+
+- len = ubi_calc_data_len(ubi, buf, len);
++ memset(buf + len, 0xFF, l - len);
++ len = ubi_calc_data_len(ubi, buf, l);
+ if (len == 0) {
+ dbg_msg("all %d bytes contain 0xFF - skip", len);
+ return 0;
+diff --exclude=.git -urN linux-2.6.25.6/drivers/mtd/ubi/vmt.c avr32-2.6/drivers/mtd/ubi/vmt.c
+--- linux-2.6.25.6/drivers/mtd/ubi/vmt.c 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/mtd/ubi/vmt.c 2008-06-12 15:09:41.123815692 +0200
+@@ -127,6 +127,7 @@
+ {
+ struct ubi_volume *vol = container_of(dev, struct ubi_volume, dev);
+
++ kfree(vol->eba_tbl);
+ kfree(vol);
+ }
+
+@@ -201,7 +202,7 @@
+ */
+ int ubi_create_volume(struct ubi_device *ubi, struct ubi_mkvol_req *req)
+ {
+- int i, err, vol_id = req->vol_id, dont_free = 0;
++ int i, err, vol_id = req->vol_id, do_free = 1;
+ struct ubi_volume *vol;
+ struct ubi_vtbl_record vtbl_rec;
+ uint64_t bytes;
+@@ -365,14 +366,14 @@
+
+ out_sysfs:
+ /*
+- * We have registered our device, we should not free the volume*
++ * We have registered our device, we should not free the volume
+ * description object in this function in case of an error - it is
+ * freed by the release function.
+ *
+ * Get device reference to prevent the release function from being
+ * called just after sysfs has been closed.
+ */
+- dont_free = 1;
++ do_free = 0;
+ get_device(&vol->dev);
+ volume_sysfs_close(vol);
+ out_gluebi:
+@@ -382,17 +383,18 @@
+ out_cdev:
+ cdev_del(&vol->cdev);
+ out_mapping:
+- kfree(vol->eba_tbl);
++ if (do_free)
++ kfree(vol->eba_tbl);
+ out_acc:
+ spin_lock(&ubi->volumes_lock);
+ ubi->rsvd_pebs -= vol->reserved_pebs;
+ ubi->avail_pebs += vol->reserved_pebs;
+ out_unlock:
+ spin_unlock(&ubi->volumes_lock);
+- if (dont_free)
+- put_device(&vol->dev);
+- else
++ if (do_free)
+ kfree(vol);
++ else
++ put_device(&vol->dev);
+ ubi_err("cannot create volume %d, error %d", vol_id, err);
+ return err;
+ }
+@@ -445,8 +447,6 @@
+ goto out_err;
+ }
+
+- kfree(vol->eba_tbl);
+- vol->eba_tbl = NULL;
+ cdev_del(&vol->cdev);
+ volume_sysfs_close(vol);
+
+@@ -727,7 +727,7 @@
+ goto fail;
+ }
+
+- n = vol->alignment % ubi->min_io_size;
++ n = vol->alignment & (ubi->min_io_size - 1);
+ if (vol->alignment != 1 && n) {
+ ubi_err("alignment is not multiple of min I/O unit");
+ goto fail;
+diff --exclude=.git -urN linux-2.6.25.6/drivers/mtd/ubi/vtbl.c avr32-2.6/drivers/mtd/ubi/vtbl.c
+--- linux-2.6.25.6/drivers/mtd/ubi/vtbl.c 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/mtd/ubi/vtbl.c 2008-06-12 15:09:41.127815922 +0200
+@@ -127,7 +127,7 @@
+ const struct ubi_vtbl_record *vtbl)
+ {
+ int i, n, reserved_pebs, alignment, data_pad, vol_type, name_len;
+- int upd_marker;
++ int upd_marker, err;
+ uint32_t crc;
+ const char *name;
+
+@@ -153,7 +153,7 @@
+ if (reserved_pebs == 0) {
+ if (memcmp(&vtbl[i], &empty_vtbl_record,
+ UBI_VTBL_RECORD_SIZE)) {
+- dbg_err("bad empty record");
++ err = 2;
+ goto bad;
+ }
+ continue;
+@@ -161,56 +161,57 @@
+
+ if (reserved_pebs < 0 || alignment < 0 || data_pad < 0 ||
+ name_len < 0) {
+- dbg_err("negative values");
++ err = 3;
+ goto bad;
+ }
+
+ if (alignment > ubi->leb_size || alignment == 0) {
+- dbg_err("bad alignment");
++ err = 4;
+ goto bad;
+ }
+
+- n = alignment % ubi->min_io_size;
++ n = alignment & (ubi->min_io_size - 1);
+ if (alignment != 1 && n) {
+- dbg_err("alignment is not multiple of min I/O unit");
++ err = 5;
+ goto bad;
+ }
+
+ n = ubi->leb_size % alignment;
+ if (data_pad != n) {
+ dbg_err("bad data_pad, has to be %d", n);
++ err = 6;
+ goto bad;
+ }
+
+ if (vol_type != UBI_VID_DYNAMIC && vol_type != UBI_VID_STATIC) {
+- dbg_err("bad vol_type");
++ err = 7;
+ goto bad;
+ }
+
+ if (upd_marker != 0 && upd_marker != 1) {
+- dbg_err("bad upd_marker");
++ err = 8;
+ goto bad;
+ }
+
+ if (reserved_pebs > ubi->good_peb_count) {
+ dbg_err("too large reserved_pebs, good PEBs %d",
+ ubi->good_peb_count);
++ err = 9;
+ goto bad;
+ }
+
+ if (name_len > UBI_VOL_NAME_MAX) {
+- dbg_err("too long volume name, max %d",
+- UBI_VOL_NAME_MAX);
++ err = 10;
+ goto bad;
+ }
+
+ if (name[0] == '\0') {
+- dbg_err("NULL volume name");
++ err = 11;
+ goto bad;
+ }
+
+ if (name_len != strnlen(name, name_len + 1)) {
+- dbg_err("bad name_len");
++ err = 12;
+ goto bad;
+ }
+ }
+@@ -235,7 +236,7 @@
+ return 0;
+
+ bad:
+- ubi_err("volume table check failed, record %d", i);
++ ubi_err("volume table check failed: record %d, error %d", i, err);
+ ubi_dbg_dump_vtbl_record(&vtbl[i], i);
+ return -EINVAL;
+ }
+@@ -384,7 +385,16 @@
+ err = ubi_io_read_data(ubi, leb[seb->lnum], seb->pnum, 0,
+ ubi->vtbl_size);
+ if (err == UBI_IO_BITFLIPS || err == -EBADMSG)
+- /* Scrub the PEB later */
++ /*
++ * Scrub the PEB later. Note, -EBADMSG indicates an
++ * uncorrectable ECC error, but we have our own CRC and
++ * the data will be checked later. If the data is OK,
++ * the PEB will be scrubbed (because we set
++ * seb->scrub). If the data is not OK, the contents of
++ * the PEB will be recovered from the second copy, and
++ * seb->scrub will be cleared in
++ * 'ubi_scan_add_used()'.
++ */
+ seb->scrub = 1;
+ else if (err)
+ goto out_free;
+@@ -620,30 +630,32 @@
+ static int check_sv(const struct ubi_volume *vol,
+ const struct ubi_scan_volume *sv)
+ {
++ int err;
++
+ if (sv->highest_lnum >= vol->reserved_pebs) {
+- dbg_err("bad highest_lnum");
++ err = 1;
+ goto bad;
+ }
+ if (sv->leb_count > vol->reserved_pebs) {
+- dbg_err("bad leb_count");
++ err = 2;
+ goto bad;
+ }
+ if (sv->vol_type != vol->vol_type) {
+- dbg_err("bad vol_type");
++ err = 3;
+ goto bad;
+ }
+ if (sv->used_ebs > vol->reserved_pebs) {
+- dbg_err("bad used_ebs");
++ err = 4;
+ goto bad;
+ }
+ if (sv->data_pad != vol->data_pad) {
+- dbg_err("bad data_pad");
++ err = 5;
+ goto bad;
+ }
+ return 0;
+
+ bad:
+- ubi_err("bad scanning information");
++ ubi_err("bad scanning information, error %d", err);
+ ubi_dbg_dump_sv(sv);
+ ubi_dbg_dump_vol_info(vol);
+ return -EINVAL;
+@@ -672,14 +684,13 @@
+ return -EINVAL;
+ }
+
+- if (si->highest_vol_id >= ubi->vtbl_slots + UBI_INT_VOL_COUNT&&
++ if (si->highest_vol_id >= ubi->vtbl_slots + UBI_INT_VOL_COUNT &&
+ si->highest_vol_id < UBI_INTERNAL_VOL_START) {
+ ubi_err("too large volume ID %d found by scanning",
+ si->highest_vol_id);
+ return -EINVAL;
+ }
+
+-
+ for (i = 0; i < ubi->vtbl_slots + UBI_INT_VOL_COUNT; i++) {
+ cond_resched();
+
+diff --exclude=.git -urN linux-2.6.25.6/drivers/mtd/ubi/wl.c avr32-2.6/drivers/mtd/ubi/wl.c
+--- linux-2.6.25.6/drivers/mtd/ubi/wl.c 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/mtd/ubi/wl.c 2008-06-12 15:09:41.127815922 +0200
+@@ -1368,7 +1368,7 @@
+ int err;
+
+ if (kthread_should_stop())
+- goto out;
++ break;
+
+ if (try_to_freeze())
+ continue;
+@@ -1403,7 +1403,6 @@
+ cond_resched();
+ }
+
+-out:
+ dbg_wl("background thread \"%s\" is killed", ubi->bgt_name);
+ return 0;
+ }
+diff --exclude=.git -urN linux-2.6.25.6/drivers/net/macb.c avr32-2.6/drivers/net/macb.c
+--- linux-2.6.25.6/drivers/net/macb.c 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/net/macb.c 2008-06-12 15:09:41.343816061 +0200
+@@ -1277,8 +1277,45 @@
+ return 0;
+ }
+
++#ifdef CONFIG_PM
++static int macb_suspend(struct platform_device *pdev, pm_message_t state)
++{
++ struct net_device *netdev = platform_get_drvdata(pdev);
++ struct macb *bp = netdev_priv(netdev);
++
++ netif_device_detach(netdev);
++
++#ifndef CONFIG_ARCH_AT91
++ clk_disable(bp->hclk);
++#endif
++ clk_disable(bp->pclk);
++
++ return 0;
++}
++
++static int macb_resume(struct platform_device *pdev)
++{
++ struct net_device *netdev = platform_get_drvdata(pdev);
++ struct macb *bp = netdev_priv(netdev);
++
++ clk_enable(bp->pclk);
++#ifndef CONFIG_ARCH_AT91
++ clk_enable(bp->hclk);
++#endif
++
++ netif_device_attach(netdev);
++
++ return 0;
++}
++#else
++#define macb_suspend NULL
++#define macb_resume NULL
++#endif
++
+ static struct platform_driver macb_driver = {
+ .remove = __exit_p(macb_remove),
++ .suspend = macb_suspend,
++ .resume = macb_resume,
+ .driver = {
+ .name = "macb",
+ },
+diff --exclude=.git -urN linux-2.6.25.6/drivers/parport/Kconfig avr32-2.6/drivers/parport/Kconfig
+--- linux-2.6.25.6/drivers/parport/Kconfig 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/parport/Kconfig 2008-06-12 15:04:01.310815768 +0200
+@@ -36,7 +36,7 @@
+ config PARPORT_PC
+ tristate "PC-style hardware"
+ depends on (!SPARC64 || PCI) && !SPARC32 && !M32R && !FRV && \
+- (!M68K || ISA) && !MN10300
++ (!M68K || ISA) && !MN10300 && !AVR32
+ ---help---
+ You should say Y here if you have a PC-style parallel port. All
+ IBM PC compatible computers and some Alphas have PC-style
+diff --exclude=.git -urN linux-2.6.25.6/drivers/pcmcia/at32_cf.c avr32-2.6/drivers/pcmcia/at32_cf.c
+--- linux-2.6.25.6/drivers/pcmcia/at32_cf.c 1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/drivers/pcmcia/at32_cf.c 2008-06-12 15:09:42.047816626 +0200
+@@ -0,0 +1,533 @@
++/*
++ * Driver for AVR32 Static Memory Controller: CompactFlash support
++ *
++ * Copyright (C) 2006 Atmel Norway
++ *
++ * This program is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU General Public License as
++ * published by the Free Software Foundation; either version 2 of the
++ * License, or (at your option) any later version.
++ *
++ * This program is distributed in the hope that it will be useful, but
++ * WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ * General Public License for more details.
++ *
++ * You should have received a copy of the GNU General Public License
++ * along with this program; if not, write to the Free Software
++ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
++ * 02111-1307, USA.
++ *
++ * The full GNU General Public License is included in this
++ * distribution in the file called COPYING.
++ */
++#include <linux/module.h>
++#include <linux/kernel.h>
++#include <linux/platform_device.h>
++#include <linux/init.h>
++#include <linux/device.h>
++#include <linux/delay.h>
++#include <linux/interrupt.h>
++#include <linux/err.h>
++#include <linux/clk.h>
++#include <linux/dma-mapping.h>
++
++#include <pcmcia/ss.h>
++
++#include <asm/gpio.h>
++#include <asm/io.h>
++#include <asm/arch/board.h>
++
++#include <asm/arch/smc.h>
++
++struct at32_cf_socket {
++ struct pcmcia_socket socket;
++ int detect_pin;
++ int reset_pin;
++ int vcc_pin;
++ int ready_pin;
++ struct resource res_attr;
++ struct resource res_mem;
++ struct resource res_io;
++ struct smc_config smc;
++ unsigned int irq;
++ unsigned int cf_cs;
++ socket_state_t state;
++ unsigned present:1;
++};
++#define to_at32_cf(sock) container_of(sock, struct at32_cf_socket, socket)
++
++/*
++ * We have the following memory layout relative to the base address:
++ *
++ * Alt IDE Mode: 00e0 0000 -> 00ff ffff
++ * True IDE Mode: 00c0 0000 -> 00df ffff
++ * I/O memory: 0080 0000 -> 00bf ffff
++ * Common memory: 0040 0000 -> 007f ffff
++ * Attribute memory: 0000 0000 -> 003f ffff
++ */
++#define CF_ATTR_OFFSET 0x00000000
++#define CF_MEM_OFFSET 0x00400000
++#define CF_IO_OFFSET 0x00800000
++#define CF_RES_SIZE 4096
++
++#ifdef DEBUG
++
++static int pc_debug;
++module_param(pc_debug, int, 0644);
++
++static void at32_cf_debug(struct at32_cf_socket *cf, const char *func,
++ int level, const char *fmt, ...)
++{
++ va_list args;
++
++ if (pc_debug > level) {
++ printk(KERN_DEBUG "at32_cf/%u: %s: ", cf->cf_cs, func);
++ va_start(args, fmt);
++ vprintk(fmt, args);
++ va_end(args);
++ }
++}
++
++#define debug(cf, lvl, fmt, arg...) \
++ at32_cf_debug(cf, __func__, lvl, fmt, ##arg)
++
++#else
++#define debug(cf, lvl, fmt, arg...) do { } while (0)
++#endif
++
++static inline int at32_cf_present(struct at32_cf_socket *cf)
++{
++ int present = 1;
++
++ /* If we don't have a detect pin, assume the card is present */
++ if (cf->detect_pin >= 0)
++ present = !gpio_get_value(cf->detect_pin);
++
++ return present;
++}
++
++static irqreturn_t at32_cf_irq(int irq, void *dev_id)
++{
++ struct at32_cf_socket *cf = dev_id;
++ unsigned int present;
++
++ present = at32_cf_present(cf);
++ if (present != cf->present) {
++ cf->present = present;
++ debug(cf, 3, "card %s\n", present ? "present" : "gone");
++ pcmcia_parse_events(&cf->socket, SS_DETECT);
++ }
++
++ return IRQ_HANDLED;
++}
++
++static int at32_cf_get_status(struct pcmcia_socket *sock, u_int *value)
++{
++ struct at32_cf_socket *cf;
++ u_int status = 0;
++
++ cf = container_of(sock, struct at32_cf_socket, socket);
++
++ if (at32_cf_present(cf)) {
++ /* NOTE: gpio on AP7xxx is 3.3V */
++ status = SS_DETECT | SS_3VCARD;
++ if (cf->ready_pin < 0 || gpio_get_value(cf->ready_pin))
++ status |= SS_READY;
++ if (cf->vcc_pin < 0 || gpio_get_value(cf->vcc_pin))
++ status |= SS_POWERON;
++ }
++
++ *value = status;
++ return 0;
++}
++
++static int at32_cf_set_socket(struct pcmcia_socket *sock, socket_state_t *state)
++{
++ struct at32_cf_socket *cf = container_of(sock, struct at32_cf_socket, socket);
++
++ debug(cf, 2, "mask: %s%s%s%s%s%sflags: %s%s%s%s%s%sVcc %d Vpp %d irq %d\n",
++ (state->csc_mask==0)?"<NONE> ":"",
++ (state->csc_mask&SS_DETECT)?"DETECT ":"",
++ (state->csc_mask&SS_READY)?"READY ":"",
++ (state->csc_mask&SS_BATDEAD)?"BATDEAD ":"",
++ (state->csc_mask&SS_BATWARN)?"BATWARN ":"",
++ (state->csc_mask&SS_STSCHG)?"STSCHG ":"",
++ (state->flags==0)?"<NONE> ":"",
++ (state->flags&SS_PWR_AUTO)?"PWR_AUTO ":"",
++ (state->flags&SS_IOCARD)?"IOCARD ":"",
++ (state->flags&SS_RESET)?"RESET ":"",
++ (state->flags&SS_SPKR_ENA)?"SPKR_ENA ":"",
++ (state->flags&SS_OUTPUT_ENA)?"OUTPUT_ENA ":"",
++ state->Vcc, state->Vpp, state->io_irq);
++
++ /*
++ * TODO: Allow boards to override this in case they have level
++ * converters.
++ */
++ switch (state->Vcc) {
++ case 0:
++ if (cf->vcc_pin >= 0)
++ gpio_set_value(cf->vcc_pin, 0);
++ break;
++ case 33:
++ if (cf->vcc_pin >= 0)
++ gpio_set_value(cf->vcc_pin, 1);
++ break;
++ default:
++ return -EINVAL;
++ }
++
++ if (cf->reset_pin >= 0)
++ gpio_set_value(cf->reset_pin, state->flags & SS_RESET);
++
++ cf->state = *state;
++
++ return 0;
++}
++
++static int at32_cf_socket_init(struct pcmcia_socket *sock)
++{
++ debug(to_at32_cf(sock), 2, "called\n");
++
++ return 0;
++}
++
++static int at32_cf_suspend(struct pcmcia_socket *sock)
++{
++ debug(to_at32_cf(sock), 2, "called\n");
++
++ at32_cf_set_socket(sock, &dead_socket);
++
++ return 0;
++}
++
++static int at32_cf_set_io_map(struct pcmcia_socket *sock,
++ struct pccard_io_map *map)
++{
++ struct at32_cf_socket *cf = container_of(sock, struct at32_cf_socket, socket);
++ int retval;
++
++ debug(cf, 2, "map %u speed %u start 0x%08x stop 0x%08x\n",
++ map->map, map->speed, map->start, map->stop);
++ debug(cf, 2, "flags: %s%s%s%s%s%s%s%s\n",
++ (map->flags == 0) ? "<NONE>":"",
++ (map->flags & MAP_ACTIVE) ? "ACTIVE " : "",
++ (map->flags & MAP_16BIT) ? "16BIT " : "",
++ (map->flags & MAP_AUTOSZ) ? "AUTOSZ " : "",
++ (map->flags & MAP_0WS) ? "0WS " : "",
++ (map->flags & MAP_WRPROT) ? "WRPROT " : "",
++ (map->flags & MAP_USE_WAIT) ? "USE_WAIT " : "",
++ (map->flags & MAP_PREFETCH) ? "PREFETCH " : "");
++
++ map->flags &= MAP_ACTIVE | MAP_16BIT | MAP_USE_WAIT;
++
++ if (map->flags & MAP_16BIT)
++ cf->smc.bus_width = 2;
++ else
++ cf->smc.bus_width = 1;
++
++ if (map->flags & MAP_USE_WAIT)
++ cf->smc.nwait_mode = 3;
++ else
++ cf->smc.nwait_mode = 0;
++
++ retval = smc_set_configuration(cf->cf_cs, &cf->smc);
++ if (retval) {
++ printk(KERN_ERR "at32_cf: could not set up SMC for I/O\n");
++ return retval;
++ }
++
++ map->start = cf->socket.io_offset;
++ map->stop = map->start + CF_RES_SIZE - 1;
++
++ return 0;
++}
++
++static int
++at32_cf_set_mem_map(struct pcmcia_socket *sock, struct pccard_mem_map *map)
++{
++ struct at32_cf_socket *cf;
++ struct resource *res;
++ int retval;
++
++ cf = container_of(sock, struct at32_cf_socket, socket);
++
++ debug(cf, 2, "map %u speed %u card_start %08x\n",
++ map->map, map->speed, map->card_start);
++ debug(cf, 2, "flags: %s%s%s%s%s%s%s%s\n",
++ (map->flags==0)?"<NONE>":"",
++ (map->flags&MAP_ACTIVE)?"ACTIVE ":"",
++ (map->flags&MAP_16BIT)?"16BIT ":"",
++ (map->flags&MAP_AUTOSZ)?"AUTOSZ ":"",
++ (map->flags&MAP_0WS)?"0WS ":"",
++ (map->flags&MAP_WRPROT)?"WRPROT ":"",
++ (map->flags&MAP_ATTRIB)?"ATTRIB ":"",
++ (map->flags&MAP_USE_WAIT)?"USE_WAIT ":"");
++
++ if (map->card_start)
++ return -EINVAL;
++
++ map->flags &= MAP_ACTIVE | MAP_ATTRIB | MAP_16BIT | MAP_USE_WAIT;
++
++ if (map->flags & MAP_ATTRIB) {
++ res = &cf->res_attr;
++
++ /* Linksys WCF12 seems to use WAIT when reading CIS */
++ map->flags |= MAP_USE_WAIT;
++ } else {
++ res = &cf->res_mem;
++ }
++
++ if (map->flags & MAP_USE_WAIT)
++ cf->smc.nwait_mode = 3;
++ else
++ cf->smc.nwait_mode = 0;
++
++ retval = smc_set_configuration(cf->cf_cs, &cf->smc);
++ if (retval) {
++ printk(KERN_ERR "at32_cf: could not set up SMC for mem\n");
++ return retval;
++ }
++
++ map->static_start = res->start;
++
++ return 0;
++}
++
++static struct pccard_operations at32_cf_ops = {
++ .init = at32_cf_socket_init,
++ .suspend = at32_cf_suspend,
++ .get_status = at32_cf_get_status,
++ .set_socket = at32_cf_set_socket,
++ .set_io_map = at32_cf_set_io_map,
++ .set_mem_map = at32_cf_set_mem_map,
++};
++
++static int __init request_pin(struct platform_device *pdev,
++ unsigned int pin, const char *name)
++{
++ if (gpio_request(pin, name)) {
++ dev_warn(&pdev->dev, "failed to request %s pin\n", name);
++ return -1;
++ }
++
++ return pin;
++}
++
++static struct smc_timing at32_cf_timing __initdata = {
++ .ncs_read_setup = 30,
++ .nrd_setup = 100,
++ .ncs_write_setup = 30,
++ .nwe_setup = 100,
++
++ .ncs_read_pulse = 360,
++ .nrd_pulse = 290,
++ .ncs_write_pulse = 360,
++ .nwe_pulse = 290,
++
++ .read_cycle = 420,
++ .write_cycle = 420,
++};
++
++static int __init at32_cf_probe(struct platform_device *pdev)
++{
++ struct at32_cf_socket *cf;
++ struct cf_platform_data *board = pdev->dev.platform_data;
++ struct resource *res_skt;
++ int irq;
++ int ret;
++
++ dev_dbg(&pdev->dev, "probe");
++
++ if (!board)
++ return -ENXIO;
++
++ res_skt = platform_get_resource(pdev, IORESOURCE_MEM, 0);
++ if (!res_skt)
++ return -ENXIO;
++
++ irq = platform_get_irq(pdev, 0);
++ if (irq < 0)
++ return irq;
++
++ cf = kzalloc(sizeof(struct at32_cf_socket), GFP_KERNEL);
++ if (!cf)
++ return -ENOMEM;
++
++ cf->detect_pin = -1;
++ cf->reset_pin = -1;
++ cf->vcc_pin = -1;
++ cf->ready_pin = -1;
++ cf->cf_cs = board->cs;
++
++ if (board->detect_pin != GPIO_PIN_NONE)
++ cf->detect_pin = request_pin(pdev, board->detect_pin,
++ "cf_detect");
++ if (board->reset_pin != GPIO_PIN_NONE)
++ cf->reset_pin = request_pin(pdev, board->reset_pin,
++ "cf_reset");
++ if (board->vcc_pin != GPIO_PIN_NONE)
++ cf->vcc_pin = request_pin(pdev, board->vcc_pin,
++ "cf_vcc");
++ if (board->ready_pin != GPIO_PIN_NONE)
++ /* READY is also used for irq through EIM */
++ cf->ready_pin = board->ready_pin;
++
++ debug(cf, 2, "pins: detect=%d reset=%d vcc=%d\n",
++ cf->detect_pin, cf->reset_pin, cf->vcc_pin);
++
++ cf->socket.pci_irq = irq;
++ cf->socket.ops = &at32_cf_ops;
++ cf->socket.resource_ops = &pccard_static_ops;
++ cf->socket.dev.parent = &pdev->dev;
++ cf->socket.owner = THIS_MODULE;
++ cf->socket.features =
++ SS_CAP_MEM_ALIGN | SS_CAP_STATIC_MAP | SS_CAP_PCCARD;
++ cf->socket.map_size = CF_RES_SIZE;
++
++ cf->res_attr.start = res_skt->start + CF_ATTR_OFFSET;
++ cf->res_attr.end = cf->res_attr.start + CF_RES_SIZE - 1;
++ cf->res_attr.name = "attribute";
++ cf->res_attr.flags = IORESOURCE_MEM;
++ ret = request_resource(res_skt, &cf->res_attr);
++ if (ret)
++ goto err_request_res_attr;
++
++ cf->res_mem.start = res_skt->start + CF_MEM_OFFSET;
++ cf->res_mem.end = cf->res_mem.start + CF_RES_SIZE - 1;
++ cf->res_mem.name = "memory";
++ cf->res_mem.flags = IORESOURCE_MEM;
++ ret = request_resource(res_skt, &cf->res_mem);
++ if (ret)
++ goto err_request_res_mem;
++
++ cf->res_io.start = res_skt->start + CF_IO_OFFSET;
++ cf->res_io.end = cf->res_io.start + CF_RES_SIZE - 1;
++ cf->res_io.name = "io";
++ cf->res_io.flags = IORESOURCE_MEM;
++ ret = request_resource(res_skt, &cf->res_io);
++ if (ret)
++ goto err_request_res_io;
++
++ cf->socket.io_offset = cf->res_io.start;
++
++ if (cf->detect_pin >= 0) {
++ ret = request_irq(gpio_to_irq(cf->detect_pin), at32_cf_irq,
++ IRQF_SHARED, "cf_detect", cf);
++ if (ret) {
++ debug(cf, 1,
++ "failed to request cf_detect interrupt\n");
++ goto err_detect_irq;
++ }
++ }
++
++ cf->present = at32_cf_present(cf);
++
++ /* Setup SMC timings */
++ smc_set_timing(&cf->smc, &at32_cf_timing);
++
++ cf->smc.bus_width = 2;
++ cf->smc.nrd_controlled = 1;
++ cf->smc.nwe_controlled = 1;
++ cf->smc.nwait_mode = 0;
++ cf->smc.byte_write = 0;
++ cf->smc.tdf_cycles = 8;
++ cf->smc.tdf_mode = 0;
++
++ ret = smc_set_configuration(cf->cf_cs, &cf->smc);
++ if (ret) {
++ debug(cf, 1, "failed to configure SMC\n", ret);
++ goto err_smc;
++ }
++
++ ret = pcmcia_register_socket(&cf->socket);
++ if (ret) {
++ debug(cf, 1, "failed to register socket: %d\n", ret);
++ goto err_register_socket;
++ }
++
++ if (cf->reset_pin >= 0)
++ gpio_direction_output(cf->reset_pin, 0);
++
++ platform_set_drvdata(pdev, cf);
++
++ dev_info(&pdev->dev, "Atmel SMC CF interface at 0x%08lx\n",
++ (unsigned long)res_skt->start);
++
++ return 0;
++
++err_register_socket:
++err_smc:
++ if (cf->detect_pin >= 0)
++ free_irq(gpio_to_irq(cf->detect_pin), cf);
++err_detect_irq:
++ release_resource(&cf->res_io);
++err_request_res_io:
++ release_resource(&cf->res_mem);
++err_request_res_mem:
++ release_resource(&cf->res_attr);
++err_request_res_attr:
++ if (cf->vcc_pin >= 0)
++ gpio_free(cf->vcc_pin);
++ if (cf->reset_pin >= 0)
++ gpio_free(cf->reset_pin);
++ if (cf->detect_pin >= 0)
++ gpio_free(cf->detect_pin);
++ kfree(cf);
++
++ return ret;
++}
++
++static int __exit at32_cf_remove(struct platform_device *pdev)
++{
++ struct at32_cf_socket *cf = platform_get_drvdata(pdev);
++
++ pcmcia_unregister_socket(&cf->socket);
++ if (cf->detect_pin >= 0) {
++ free_irq(gpio_to_irq(cf->detect_pin), cf);
++ gpio_free(cf->detect_pin);
++ }
++ if (cf->vcc_pin >= 0)
++ gpio_free(cf->vcc_pin);
++ if (cf->reset_pin >= 0)
++ gpio_free(cf->reset_pin);
++
++ release_resource(&cf->res_io);
++ release_resource(&cf->res_mem);
++ release_resource(&cf->res_attr);
++ kfree(cf);
++ platform_set_drvdata(pdev, NULL);
++
++ return 0;
++}
++
++static struct platform_driver at32_cf_driver = {
++ .remove = __exit_p(at32_cf_remove),
++ .driver = {
++ .name = "at32_cf",
++ .owner = THIS_MODULE,
++ },
++};
++
++static int __init at32_cf_init(void)
++{
++ int ret;
++
++ ret = platform_driver_probe(&at32_cf_driver, at32_cf_probe);
++ if (ret)
++ printk(KERN_ERR "at32_cf: probe failed: %d\n", ret);
++ return ret;
++}
++
++static void __exit at32_cf_exit(void)
++{
++ platform_driver_unregister(&at32_cf_driver);
++}
++
++module_init(at32_cf_init);
++module_exit(at32_cf_exit);
++
++MODULE_LICENSE("GPL");
++MODULE_DESCRIPTION("Driver for SMC PCMCIA interface");
++MODULE_AUTHOR("Hans-Christian Egtvedt <hcegtvedt@atmel.com>");
+diff --exclude=.git -urN linux-2.6.25.6/drivers/pcmcia/Kconfig avr32-2.6/drivers/pcmcia/Kconfig
+--- linux-2.6.25.6/drivers/pcmcia/Kconfig 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/pcmcia/Kconfig 2008-06-12 15:09:42.047816626 +0200
+@@ -277,6 +277,13 @@
+ Say Y here to support the CompactFlash controller on the
+ PA Semi Electra eval board.
+
++config AT32_CF
++ tristate "AT32AP CompactFlash Controller"
++ depends on PCMCIA && AVR32 && PLATFORM_AT32AP
++ help
++ Say Y here to support the CompactFlash controller on AT32 chips.
++ Or choose M to compile the driver as a module named "at32_cf".
++
+ config PCCARD_NONSTATIC
+ tristate
+
+diff --exclude=.git -urN linux-2.6.25.6/drivers/pcmcia/Makefile avr32-2.6/drivers/pcmcia/Makefile
+--- linux-2.6.25.6/drivers/pcmcia/Makefile 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/pcmcia/Makefile 2008-06-12 15:09:42.047816626 +0200
+@@ -38,6 +38,7 @@
+ obj-$(CONFIG_OMAP_CF) += omap_cf.o
+ obj-$(CONFIG_AT91_CF) += at91_cf.o
+ obj-$(CONFIG_ELECTRA_CF) += electra_cf.o
++obj-$(CONFIG_AT32_CF) += at32_cf.o
+
+ sa11xx_core-y += soc_common.o sa11xx_base.o
+ pxa2xx_core-y += soc_common.o pxa2xx_base.o
+diff --exclude=.git -urN linux-2.6.25.6/drivers/serial/atmel_serial.c avr32-2.6/drivers/serial/atmel_serial.c
+--- linux-2.6.25.6/drivers/serial/atmel_serial.c 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/serial/atmel_serial.c 2008-06-12 15:09:42.514816054 +0200
+@@ -1440,6 +1440,15 @@
+ };
+
+ #ifdef CONFIG_PM
++static bool atmel_serial_clk_will_stop(void)
++{
++#ifdef CONFIG_ARCH_AT91
++ return at91_suspend_entering_slow_clock();
++#else
++ return false;
++#endif
++}
++
+ static int atmel_serial_suspend(struct platform_device *pdev,
+ pm_message_t state)
+ {
+@@ -1447,7 +1456,7 @@
+ struct atmel_uart_port *atmel_port = to_atmel_uart_port(port);
+
+ if (device_may_wakeup(&pdev->dev)
+- && !at91_suspend_entering_slow_clock())
++ && !atmel_serial_clk_will_stop())
+ enable_irq_wake(port->irq);
+ else {
+ uart_suspend_port(&atmel_uart, port);
+diff --exclude=.git -urN linux-2.6.25.6/drivers/spi/atmel_spi.c avr32-2.6/drivers/spi/atmel_spi.c
+--- linux-2.6.25.6/drivers/spi/atmel_spi.c 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/spi/atmel_spi.c 2008-06-12 15:09:42.542815989 +0200
+@@ -51,9 +51,7 @@
+ u8 stopping;
+ struct list_head queue;
+ struct spi_transfer *current_transfer;
+- unsigned long current_remaining_bytes;
+- struct spi_transfer *next_transfer;
+- unsigned long next_remaining_bytes;
++ unsigned long remaining_bytes;
+
+ void *buffer;
+ dma_addr_t buffer_dma;
+@@ -133,48 +131,6 @@
+ gpio_set_value(gpio, !active);
+ }
+
+-static inline int atmel_spi_xfer_is_last(struct spi_message *msg,
+- struct spi_transfer *xfer)
+-{
+- return msg->transfers.prev == &xfer->transfer_list;
+-}
+-
+-static inline int atmel_spi_xfer_can_be_chained(struct spi_transfer *xfer)
+-{
+- return xfer->delay_usecs == 0 && !xfer->cs_change;
+-}
+-
+-static void atmel_spi_next_xfer_data(struct spi_master *master,
+- struct spi_transfer *xfer,
+- dma_addr_t *tx_dma,
+- dma_addr_t *rx_dma,
+- u32 *plen)
+-{
+- struct atmel_spi *as = spi_master_get_devdata(master);
+- u32 len = *plen;
+-
+- /* use scratch buffer only when rx or tx data is unspecified */
+- if (xfer->rx_buf)
+- *rx_dma = xfer->rx_dma + xfer->len - len;
+- else {
+- *rx_dma = as->buffer_dma;
+- if (len > BUFFER_SIZE)
+- len = BUFFER_SIZE;
+- }
+- if (xfer->tx_buf)
+- *tx_dma = xfer->tx_dma + xfer->len - len;
+- else {
+- *tx_dma = as->buffer_dma;
+- if (len > BUFFER_SIZE)
+- len = BUFFER_SIZE;
+- memset(as->buffer, 0, len);
+- dma_sync_single_for_device(&as->pdev->dev,
+- as->buffer_dma, len, DMA_TO_DEVICE);
+- }
+-
+- *plen = len;
+-}
+-
+ /*
+ * Submit next transfer for DMA.
+ * lock is held, spi irq is blocked
+@@ -184,78 +140,53 @@
+ {
+ struct atmel_spi *as = spi_master_get_devdata(master);
+ struct spi_transfer *xfer;
+- u32 len, remaining, total;
++ u32 len;
+ dma_addr_t tx_dma, rx_dma;
+
+- if (!as->current_transfer)
+- xfer = list_entry(msg->transfers.next,
+- struct spi_transfer, transfer_list);
+- else if (!as->next_transfer)
+- xfer = list_entry(as->current_transfer->transfer_list.next,
+- struct spi_transfer, transfer_list);
+- else
+- xfer = NULL;
+-
+- if (xfer) {
+- len = xfer->len;
+- atmel_spi_next_xfer_data(master, xfer, &tx_dma, &rx_dma, &len);
+- remaining = xfer->len - len;
+-
+- spi_writel(as, RPR, rx_dma);
+- spi_writel(as, TPR, tx_dma);
+-
+- if (msg->spi->bits_per_word > 8)
+- len >>= 1;
+- spi_writel(as, RCR, len);
+- spi_writel(as, TCR, len);
+-
+- dev_dbg(&msg->spi->dev,
+- " start xfer %p: len %u tx %p/%08x rx %p/%08x\n",
+- xfer, xfer->len, xfer->tx_buf, xfer->tx_dma,
+- xfer->rx_buf, xfer->rx_dma);
+- } else {
+- xfer = as->next_transfer;
+- remaining = as->next_remaining_bytes;
++ xfer = as->current_transfer;
++ if (!xfer || as->remaining_bytes == 0) {
++ if (xfer)
++ xfer = list_entry(xfer->transfer_list.next,
++ struct spi_transfer, transfer_list);
++ else
++ xfer = list_entry(msg->transfers.next,
++ struct spi_transfer, transfer_list);
++ as->remaining_bytes = xfer->len;
++ as->current_transfer = xfer;
+ }
+
+- as->current_transfer = xfer;
+- as->current_remaining_bytes = remaining;
+-
+- if (remaining > 0)
+- len = remaining;
+- else if (!atmel_spi_xfer_is_last(msg, xfer)
+- && atmel_spi_xfer_can_be_chained(xfer)) {
+- xfer = list_entry(xfer->transfer_list.next,
+- struct spi_transfer, transfer_list);
+- len = xfer->len;
+- } else
+- xfer = NULL;
++ len = as->remaining_bytes;
+
+- as->next_transfer = xfer;
++ tx_dma = xfer->tx_dma + xfer->len - len;
++ rx_dma = xfer->rx_dma + xfer->len - len;
+
+- if (xfer) {
+- total = len;
+- atmel_spi_next_xfer_data(master, xfer, &tx_dma, &rx_dma, &len);
+- as->next_remaining_bytes = total - len;
+-
+- spi_writel(as, RNPR, rx_dma);
+- spi_writel(as, TNPR, tx_dma);
+-
+- if (msg->spi->bits_per_word > 8)
+- len >>= 1;
+- spi_writel(as, RNCR, len);
+- spi_writel(as, TNCR, len);
+-
+- dev_dbg(&msg->spi->dev,
+- " next xfer %p: len %u tx %p/%08x rx %p/%08x\n",
+- xfer, xfer->len, xfer->tx_buf, xfer->tx_dma,
+- xfer->rx_buf, xfer->rx_dma);
+- } else {
+- spi_writel(as, RNCR, 0);
+- spi_writel(as, TNCR, 0);
++ /* use scratch buffer only when rx or tx data is unspecified */
++ if (!xfer->rx_buf) {
++ rx_dma = as->buffer_dma;
++ if (len > BUFFER_SIZE)
++ len = BUFFER_SIZE;
+ }
++ if (!xfer->tx_buf) {
++ tx_dma = as->buffer_dma;
++ if (len > BUFFER_SIZE)
++ len = BUFFER_SIZE;
++ memset(as->buffer, 0, len);
++ dma_sync_single_for_device(&as->pdev->dev,
++ as->buffer_dma, len, DMA_TO_DEVICE);
++ }
++
++ spi_writel(as, RPR, rx_dma);
++ spi_writel(as, TPR, tx_dma);
+
+- /* REVISIT: We're waiting for ENDRX before we start the next
++ as->remaining_bytes -= len;
++ if (msg->spi->bits_per_word > 8)
++ len >>= 1;
++
++ /* REVISIT: when xfer->delay_usecs == 0, the PDC "next transfer"
++ * mechanism might help avoid the IRQ latency between transfers
++ * (and improve the nCS0 errata handling on at91rm9200 chips)
++ *
++ * We're also waiting for ENDRX before we start the next
+ * transfer because we need to handle some difficult timing
+ * issues otherwise. If we wait for ENDTX in one transfer and
+ * then starts waiting for ENDRX in the next, it's difficult
+@@ -265,7 +196,17 @@
+ *
+ * It should be doable, though. Just not now...
+ */
++ spi_writel(as, TNCR, 0);
++ spi_writel(as, RNCR, 0);
+ spi_writel(as, IER, SPI_BIT(ENDRX) | SPI_BIT(OVRES));
++
++ dev_dbg(&msg->spi->dev,
++ " start xfer %p: len %u tx %p/%08x rx %p/%08x imr %03x\n",
++ xfer, xfer->len, xfer->tx_buf, xfer->tx_dma,
++ xfer->rx_buf, xfer->rx_dma, spi_readl(as, IMR));
++
++ spi_writel(as, RCR, len);
++ spi_writel(as, TCR, len);
+ spi_writel(as, PTCR, SPI_BIT(TXTEN) | SPI_BIT(RXTEN));
+ }
+
+@@ -363,7 +304,6 @@
+ spin_lock(&as->lock);
+
+ as->current_transfer = NULL;
+- as->next_transfer = NULL;
+
+ /* continue if needed */
+ if (list_empty(&as->queue) || as->stopping)
+@@ -447,7 +387,7 @@
+
+ spi_writel(as, IDR, pending);
+
+- if (as->current_remaining_bytes == 0) {
++ if (as->remaining_bytes == 0) {
+ msg->actual_length += xfer->len;
+
+ if (!msg->is_dma_mapped)
+@@ -457,7 +397,7 @@
+ if (xfer->delay_usecs)
+ udelay(xfer->delay_usecs);
+
+- if (atmel_spi_xfer_is_last(msg, xfer)) {
++ if (msg->transfers.prev == &xfer->transfer_list) {
+ /* report completed message */
+ atmel_spi_msg_done(master, as, msg, 0,
+ xfer->cs_change);
+diff --exclude=.git -urN linux-2.6.25.6/drivers/usb/gadget/atmel_usba_udc.c avr32-2.6/drivers/usb/gadget/atmel_usba_udc.c
+--- linux-2.6.25.6/drivers/usb/gadget/atmel_usba_udc.c 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/usb/gadget/atmel_usba_udc.c 2008-06-12 15:09:42.586816287 +0200
+@@ -18,6 +18,7 @@
+ #include <linux/platform_device.h>
+ #include <linux/usb/ch9.h>
+ #include <linux/usb/gadget.h>
++#include <linux/usb/atmel_usba_udc.h>
+ #include <linux/delay.h>
+
+ #include <asm/gpio.h>
+@@ -27,6 +28,7 @@
+
+
+ static struct usba_udc the_udc;
++static struct usba_ep *usba_ep;
+
+ #ifdef CONFIG_USB_GADGET_DEBUG_FS
+ #include <linux/debugfs.h>
+@@ -324,53 +326,28 @@
+ return 1;
+ }
+
+-static void copy_to_fifo(void __iomem *fifo, const void *buf, int len)
+-{
+- unsigned long tmp;
++#if defined(CONFIG_AVR32)
+
+- DBG(DBG_FIFO, "copy to FIFO (len %d):\n", len);
+- for (; len > 0; len -= 4, buf += 4, fifo += 4) {
+- tmp = *(unsigned long *)buf;
+- if (len >= 4) {
+- DBG(DBG_FIFO, " -> %08lx\n", tmp);
+- __raw_writel(tmp, fifo);
+- } else {
+- do {
+- DBG(DBG_FIFO, " -> %02lx\n", tmp >> 24);
+- __raw_writeb(tmp >> 24, fifo);
+- fifo++;
+- tmp <<= 8;
+- } while (--len);
+- break;
+- }
+- }
++static void toggle_bias(int is_on)
++{
+ }
+
+-static void copy_from_fifo(void *buf, void __iomem *fifo, int len)
++#elif defined(CONFIG_ARCH_AT91)
++
++#include <asm/arch/at91_pmc.h>
++
++static void toggle_bias(int is_on)
+ {
+- union {
+- unsigned long *w;
+- unsigned char *b;
+- } p;
+- unsigned long tmp;
+-
+- DBG(DBG_FIFO, "copy from FIFO (len %d):\n", len);
+- for (p.w = buf; len > 0; len -= 4, p.w++, fifo += 4) {
+- if (len >= 4) {
+- tmp = __raw_readl(fifo);
+- *p.w = tmp;
+- DBG(DBG_FIFO, " -> %08lx\n", tmp);
+- } else {
+- do {
+- tmp = __raw_readb(fifo);
+- *p.b = tmp;
+- DBG(DBG_FIFO, " -> %02lx\n", tmp);
+- fifo++, p.b++;
+- } while (--len);
+- }
+- }
++ unsigned int uckr = at91_sys_read(AT91_CKGR_UCKR);
++
++ if (is_on)
++ at91_sys_write(AT91_CKGR_UCKR, uckr | AT91_PMC_BIASEN);
++ else
++ at91_sys_write(AT91_CKGR_UCKR, uckr & ~(AT91_PMC_BIASEN));
+ }
+
++#endif /* CONFIG_ARCH_AT91 */
++
+ static void next_fifo_transaction(struct usba_ep *ep, struct usba_request *req)
+ {
+ unsigned int transaction_len;
+@@ -387,7 +364,7 @@
+ ep->ep.name, req, transaction_len,
+ req->last_transaction ? ", done" : "");
+
+- copy_to_fifo(ep->fifo, req->req.buf + req->req.actual, transaction_len);
++ memcpy_toio(ep->fifo, req->req.buf + req->req.actual, transaction_len);
+ usba_ep_writel(ep, SET_STA, USBA_TX_PK_RDY);
+ req->req.actual += transaction_len;
+ }
+@@ -476,7 +453,7 @@
+ bytecount = req->req.length - req->req.actual;
+ }
+
+- copy_from_fifo(req->req.buf + req->req.actual,
++ memcpy_fromio(req->req.buf + req->req.actual,
+ ep->fifo, bytecount);
+ req->req.actual += bytecount;
+
+@@ -1029,33 +1006,6 @@
+ .set_selfpowered = usba_udc_set_selfpowered,
+ };
+
+-#define EP(nam, idx, maxpkt, maxbk, dma, isoc) \
+-{ \
+- .ep = { \
+- .ops = &usba_ep_ops, \
+- .name = nam, \
+- .maxpacket = maxpkt, \
+- }, \
+- .udc = &the_udc, \
+- .queue = LIST_HEAD_INIT(usba_ep[idx].queue), \
+- .fifo_size = maxpkt, \
+- .nr_banks = maxbk, \
+- .index = idx, \
+- .can_dma = dma, \
+- .can_isoc = isoc, \
+-}
+-
+-static struct usba_ep usba_ep[] = {
+- EP("ep0", 0, 64, 1, 0, 0),
+- EP("ep1in-bulk", 1, 512, 2, 1, 1),
+- EP("ep2out-bulk", 2, 512, 2, 1, 1),
+- EP("ep3in-int", 3, 64, 3, 1, 0),
+- EP("ep4out-int", 4, 64, 3, 1, 0),
+- EP("ep5in-iso", 5, 1024, 3, 1, 1),
+- EP("ep6out-iso", 6, 1024, 3, 1, 1),
+-};
+-#undef EP
+-
+ static struct usb_endpoint_descriptor usba_ep0_desc = {
+ .bLength = USB_DT_ENDPOINT_SIZE,
+ .bDescriptorType = USB_DT_ENDPOINT,
+@@ -1074,7 +1024,6 @@
+ static struct usba_udc the_udc = {
+ .gadget = {
+ .ops = &usba_udc_ops,
+- .ep0 = &usba_ep[0].ep,
+ .ep_list = LIST_HEAD_INIT(the_udc.gadget.ep_list),
+ .is_dualspeed = 1,
+ .name = "atmel_usba_udc",
+@@ -1231,7 +1180,7 @@
+ } else {
+ usba_ep_writel(ep, CTL_ENB, USBA_EPT_ENABLE);
+ usba_writel(udc, TST, USBA_TST_PKT_MODE);
+- copy_to_fifo(ep->fifo, test_packet_buffer,
++ memcpy_toio(ep->fifo, test_packet_buffer,
+ sizeof(test_packet_buffer));
+ usba_ep_writel(ep, SET_STA, USBA_TX_PK_RDY);
+ dev_info(dev, "Entering Test_Packet mode...\n");
+@@ -1530,13 +1479,13 @@
+ DBG(DBG_HW, "Packet length: %u\n", pkt_len);
+ if (pkt_len != sizeof(crq)) {
+ pr_warning("udc: Invalid packet length %u "
+- "(expected %lu)\n", pkt_len, sizeof(crq));
++ "(expected %zu)\n", pkt_len, sizeof(crq));
+ set_protocol_stall(udc, ep);
+ return;
+ }
+
+ DBG(DBG_FIFO, "Copying ctrl request from 0x%p:\n", ep->fifo);
+- copy_from_fifo(crq.data, ep->fifo, sizeof(crq));
++ memcpy_fromio(crq.data, ep->fifo, sizeof(crq));
+
+ /* Free up one bank in the FIFO so that we can
+ * generate or receive a reply right away. */
+@@ -1688,6 +1637,7 @@
+ DBG(DBG_INT, "irq, status=%#08x\n", status);
+
+ if (status & USBA_DET_SUSPEND) {
++ toggle_bias(0);
+ usba_writel(udc, INT_CLR, USBA_DET_SUSPEND);
+ DBG(DBG_BUS, "Suspend detected\n");
+ if (udc->gadget.speed != USB_SPEED_UNKNOWN
+@@ -1699,6 +1649,7 @@
+ }
+
+ if (status & USBA_WAKE_UP) {
++ toggle_bias(1);
+ usba_writel(udc, INT_CLR, USBA_WAKE_UP);
+ DBG(DBG_BUS, "Wake Up CPU detected\n");
+ }
+@@ -1792,12 +1743,14 @@
+ vbus = gpio_get_value(udc->vbus_pin);
+ if (vbus != udc->vbus_prev) {
+ if (vbus) {
+- usba_writel(udc, CTRL, USBA_EN_USBA);
++ toggle_bias(1);
++ usba_writel(udc, CTRL, USBA_ENABLE_MASK);
+ usba_writel(udc, INT_ENB, USBA_END_OF_RESET);
+ } else {
+ udc->gadget.speed = USB_SPEED_UNKNOWN;
+ reset_all_endpoints(udc);
+- usba_writel(udc, CTRL, 0);
++ toggle_bias(0);
++ usba_writel(udc, CTRL, USBA_DISABLE_MASK);
+ spin_unlock(&udc->lock);
+ udc->driver->disconnect(&udc->gadget);
+ spin_lock(&udc->lock);
+@@ -1850,7 +1803,8 @@
+ /* If Vbus is present, enable the controller and wait for reset */
+ spin_lock_irqsave(&udc->lock, flags);
+ if (vbus_is_present(udc) && udc->vbus_prev == 0) {
+- usba_writel(udc, CTRL, USBA_EN_USBA);
++ toggle_bias(1);
++ usba_writel(udc, CTRL, USBA_ENABLE_MASK);
+ usba_writel(udc, INT_ENB, USBA_END_OF_RESET);
+ }
+ spin_unlock_irqrestore(&udc->lock, flags);
+@@ -1883,7 +1837,8 @@
+ spin_unlock_irqrestore(&udc->lock, flags);
+
+ /* This will also disable the DP pullup */
+- usba_writel(udc, CTRL, 0);
++ toggle_bias(0);
++ usba_writel(udc, CTRL, USBA_DISABLE_MASK);
+
+ driver->unbind(&udc->gadget);
+ udc->gadget.dev.driver = NULL;
+@@ -1908,7 +1863,7 @@
+
+ regs = platform_get_resource(pdev, IORESOURCE_MEM, CTRL_IOMEM_ID);
+ fifo = platform_get_resource(pdev, IORESOURCE_MEM, FIFO_IOMEM_ID);
+- if (!regs || !fifo)
++ if (!regs || !fifo || !pdata)
+ return -ENXIO;
+
+ irq = platform_get_irq(pdev, 0);
+@@ -1953,19 +1908,48 @@
+
+ /* Make sure we start from a clean slate */
+ clk_enable(pclk);
+- usba_writel(udc, CTRL, 0);
++ toggle_bias(0);
++ usba_writel(udc, CTRL, USBA_DISABLE_MASK);
+ clk_disable(pclk);
+
++ usba_ep = kmalloc(sizeof(struct usba_ep) * pdata->num_ep,
++ GFP_KERNEL);
++ if (!usba_ep)
++ goto err_alloc_ep;
++
++ the_udc.gadget.ep0 = &usba_ep[0].ep;
++
+ INIT_LIST_HEAD(&usba_ep[0].ep.ep_list);
+ usba_ep[0].ep_regs = udc->regs + USBA_EPT_BASE(0);
+ usba_ep[0].dma_regs = udc->regs + USBA_DMA_BASE(0);
+ usba_ep[0].fifo = udc->fifo + USBA_FIFO_BASE(0);
+- for (i = 1; i < ARRAY_SIZE(usba_ep); i++) {
++ usba_ep[0].ep.ops = &usba_ep_ops;
++ usba_ep[0].ep.name = pdata->ep[0].name;
++ usba_ep[0].ep.maxpacket = pdata->ep[0].fifo_size;
++ usba_ep[0].udc = &the_udc;
++ INIT_LIST_HEAD(&usba_ep[0].queue);
++ usba_ep[0].fifo_size = pdata->ep[0].fifo_size;
++ usba_ep[0].nr_banks = pdata->ep[0].nr_banks;
++ usba_ep[0].index = pdata->ep[0].index;
++ usba_ep[0].can_dma = pdata->ep[0].can_dma;
++ usba_ep[0].can_isoc = pdata->ep[0].can_isoc;
++
++ for (i = 1; i < pdata->num_ep; i++) {
+ struct usba_ep *ep = &usba_ep[i];
+
+ ep->ep_regs = udc->regs + USBA_EPT_BASE(i);
+ ep->dma_regs = udc->regs + USBA_DMA_BASE(i);
+ ep->fifo = udc->fifo + USBA_FIFO_BASE(i);
++ ep->ep.ops = &usba_ep_ops;
++ ep->ep.name = pdata->ep[i].name;
++ ep->ep.maxpacket = pdata->ep[i].fifo_size;
++ ep->udc = &the_udc;
++ INIT_LIST_HEAD(&ep->queue);
++ ep->fifo_size = pdata->ep[i].fifo_size;
++ ep->nr_banks = pdata->ep[i].nr_banks;
++ ep->index = pdata->ep[i].index;
++ ep->can_dma = pdata->ep[i].can_dma;
++ ep->can_isoc = pdata->ep[i].can_isoc;
+
+ list_add_tail(&ep->ep.ep_list, &udc->gadget.ep_list);
+ }
+@@ -1984,7 +1968,7 @@
+ goto err_device_add;
+ }
+
+- if (pdata && pdata->vbus_pin != GPIO_PIN_NONE) {
++ if (pdata->vbus_pin >= 0) {
+ if (!gpio_request(pdata->vbus_pin, "atmel_usba_udc")) {
+ udc->vbus_pin = pdata->vbus_pin;
+
+@@ -2004,7 +1988,7 @@
+ }
+
+ usba_init_debugfs(udc);
+- for (i = 1; i < ARRAY_SIZE(usba_ep); i++)
++ for (i = 1; i < pdata->num_ep; i++)
+ usba_ep_init_debugfs(udc, &usba_ep[i]);
+
+ return 0;
+@@ -2012,6 +1996,8 @@
+ err_device_add:
+ free_irq(irq, udc);
+ err_request_irq:
++ kfree(usba_ep);
++err_alloc_ep:
+ iounmap(udc->fifo);
+ err_map_fifo:
+ iounmap(udc->regs);
+@@ -2029,10 +2015,11 @@
+ {
+ struct usba_udc *udc;
+ int i;
++ struct usba_platform_data *pdata = pdev->dev.platform_data;
+
+ udc = platform_get_drvdata(pdev);
+
+- for (i = 1; i < ARRAY_SIZE(usba_ep); i++)
++ for (i = 1; i < pdata->num_ep; i++)
+ usba_ep_cleanup_debugfs(&usba_ep[i]);
+ usba_cleanup_debugfs(udc);
+
+@@ -2040,6 +2027,7 @@
+ gpio_free(udc->vbus_pin);
+
+ free_irq(udc->irq, udc);
++ kfree(usba_ep);
+ iounmap(udc->fifo);
+ iounmap(udc->regs);
+ clk_put(udc->hclk);
+diff --exclude=.git -urN linux-2.6.25.6/drivers/usb/gadget/atmel_usba_udc.h avr32-2.6/drivers/usb/gadget/atmel_usba_udc.h
+--- linux-2.6.25.6/drivers/usb/gadget/atmel_usba_udc.h 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/usb/gadget/atmel_usba_udc.h 2008-06-12 15:04:02.443815949 +0200
+@@ -41,6 +41,15 @@
+ #define USBA_EN_USBA (1 << 8)
+ #define USBA_DETACH (1 << 9)
+ #define USBA_REMOTE_WAKE_UP (1 << 10)
++#define USBA_PULLD_DIS (1 << 11)
++
++#if defined(CONFIG_AVR32)
++#define USBA_ENABLE_MASK USBA_EN_USBA
++#define USBA_DISABLE_MASK 0
++#elif defined(CONFIG_ARCH_AT91)
++#define USBA_ENABLE_MASK (USBA_EN_USBA | USBA_PULLD_DIS)
++#define USBA_DISABLE_MASK USBA_DETACH
++#endif /* CONFIG_ARCH_AT91 */
+
+ /* Bitfields in FNUM */
+ #define USBA_MICRO_FRAME_NUM_OFFSET 0
+diff --exclude=.git -urN linux-2.6.25.6/drivers/usb/gadget/Kconfig avr32-2.6/drivers/usb/gadget/Kconfig
+--- linux-2.6.25.6/drivers/usb/gadget/Kconfig 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/usb/gadget/Kconfig 2008-06-12 15:09:42.582816057 +0200
+@@ -118,10 +118,10 @@
+ config USB_GADGET_ATMEL_USBA
+ boolean "Atmel USBA"
+ select USB_GADGET_DUALSPEED
+- depends on AVR32
++ depends on AVR32 || ARCH_AT91CAP9
+ help
+ USBA is the integrated high-speed USB Device controller on
+- the AT32AP700x processors from Atmel.
++ the AT32AP700x and AT91CAP9 processors from Atmel.
+
+ config USB_ATMEL_USBA
+ tristate
+diff --exclude=.git -urN linux-2.6.25.6/drivers/video/atmel_lcdfb.c avr32-2.6/drivers/video/atmel_lcdfb.c
+--- linux-2.6.25.6/drivers/video/atmel_lcdfb.c 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/video/atmel_lcdfb.c 2008-06-12 15:09:43.343816340 +0200
+@@ -38,7 +38,9 @@
+ #endif
+
+ #if defined(CONFIG_ARCH_AT91)
+-#define ATMEL_LCDFB_FBINFO_DEFAULT FBINFO_DEFAULT
++#define ATMEL_LCDFB_FBINFO_DEFAULT (FBINFO_DEFAULT \
++ | FBINFO_PARTIAL_PAN_OK \
++ | FBINFO_HWACCEL_YPAN)
+
+ static inline void atmel_lcdfb_update_dma2d(struct atmel_lcdfb_info *sinfo,
+ struct fb_var_screeninfo *var)
+@@ -176,7 +178,7 @@
+ .type = FB_TYPE_PACKED_PIXELS,
+ .visual = FB_VISUAL_TRUECOLOR,
+ .xpanstep = 0,
+- .ypanstep = 0,
++ .ypanstep = 1,
+ .ywrapstep = 0,
+ .accel = FB_ACCEL_NONE,
+ };
+@@ -250,6 +252,8 @@
+ return -ENOMEM;
+ }
+
++ memset(info->screen_base, 0, info->fix.smem_len);
++
+ return 0;
+ }
+
+@@ -634,7 +638,6 @@
+ struct fb_info *info = sinfo->info;
+ int ret = 0;
+
+- memset_io(info->screen_base, 0, info->fix.smem_len);
+ info->var.activate |= FB_ACTIVATE_FORCE | FB_ACTIVATE_NOW;
+
+ dev_info(info->device,
+@@ -764,6 +767,11 @@
+ info->screen_base = ioremap(info->fix.smem_start, info->fix.smem_len);
+ if (!info->screen_base)
+ goto release_intmem;
++
++ /*
++ * Don't clear the framebuffer -- someone may have set
++ * up a splash image.
++ */
+ } else {
+ /* alocate memory buffer */
+ ret = atmel_lcdfb_alloc_video_memory(sinfo);
+diff --exclude=.git -urN linux-2.6.25.6/fs/fs-writeback.c avr32-2.6/fs/fs-writeback.c
+--- linux-2.6.25.6/fs/fs-writeback.c 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/fs/fs-writeback.c 2008-06-12 15:09:44.531816544 +0200
+@@ -385,8 +385,6 @@
+ * WB_SYNC_HOLD is a hack for sys_sync(): reattach the inode to sb->s_dirty so
+ * that it can be located for waiting on in __writeback_single_inode().
+ *
+- * Called under inode_lock.
+- *
+ * If `bdi' is non-zero then we're being asked to writeback a specific queue.
+ * This function assumes that the blockdev superblock's inodes are backed by
+ * a variety of queues, so all inodes are searched. For other superblocks,
+@@ -402,11 +400,12 @@
+ * on the writer throttling path, and we get decent balancing between many
+ * throttled threads: we don't want them all piling up on inode_sync_wait.
+ */
+-static void
+-sync_sb_inodes(struct super_block *sb, struct writeback_control *wbc)
++void generic_sync_sb_inodes(struct super_block *sb,
++ struct writeback_control *wbc)
+ {
+ const unsigned long start = jiffies; /* livelock avoidance */
+
++ spin_lock(&inode_lock);
+ if (!wbc->for_kupdate || list_empty(&sb->s_io))
+ queue_io(sb, wbc->older_than_this);
+
+@@ -485,8 +484,16 @@
+ if (!list_empty(&sb->s_more_io))
+ wbc->more_io = 1;
+ }
++ spin_unlock(&inode_lock);
+ return; /* Leave any unwritten inodes on s_io */
+ }
++EXPORT_SYMBOL_GPL(generic_sync_sb_inodes);
++
++static void sync_sb_inodes(struct super_block *sb,
++ struct writeback_control *wbc)
++{
++ generic_sync_sb_inodes(sb, wbc);
++}
+
+ /*
+ * Start writeback of dirty pagecache data against all unlocked inodes.
+@@ -526,11 +533,8 @@
+ * be unmounted by the time it is released.
+ */
+ if (down_read_trylock(&sb->s_umount)) {
+- if (sb->s_root) {
+- spin_lock(&inode_lock);
++ if (sb->s_root)
+ sync_sb_inodes(sb, wbc);
+- spin_unlock(&inode_lock);
+- }
+ up_read(&sb->s_umount);
+ }
+ spin_lock(&sb_lock);
+@@ -568,9 +572,7 @@
+ (inodes_stat.nr_inodes - inodes_stat.nr_unused) +
+ nr_dirty + nr_unstable;
+ wbc.nr_to_write += wbc.nr_to_write / 2; /* Bit more for luck */
+- spin_lock(&inode_lock);
+ sync_sb_inodes(sb, &wbc);
+- spin_unlock(&inode_lock);
+ }
+
+ /*
+diff --exclude=.git -urN linux-2.6.25.6/fs/Kconfig avr32-2.6/fs/Kconfig
+--- linux-2.6.25.6/fs/Kconfig 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/fs/Kconfig 2008-06-12 15:09:43.915816293 +0200
+@@ -1347,6 +1347,9 @@
+
+ endchoice
+
++# UBIFS File system configuration
++source "fs/ubifs/Kconfig"
++
+ config CRAMFS
+ tristate "Compressed ROM file system support (cramfs)"
+ depends on BLOCK
+diff --exclude=.git -urN linux-2.6.25.6/fs/Makefile avr32-2.6/fs/Makefile
+--- linux-2.6.25.6/fs/Makefile 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/fs/Makefile 2008-06-12 15:09:43.915816293 +0200
+@@ -100,6 +100,7 @@
+ obj-$(CONFIG_UFS_FS) += ufs/
+ obj-$(CONFIG_EFS_FS) += efs/
+ obj-$(CONFIG_JFFS2_FS) += jffs2/
++obj-$(CONFIG_UBIFS_FS) += ubifs/
+ obj-$(CONFIG_AFFS_FS) += affs/
+ obj-$(CONFIG_ROMFS_FS) += romfs/
+ obj-$(CONFIG_QNX4FS_FS) += qnx4/
+diff --exclude=.git -urN linux-2.6.25.6/fs/ubifs/budget.c avr32-2.6/fs/ubifs/budget.c
+--- linux-2.6.25.6/fs/ubifs/budget.c 1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/fs/ubifs/budget.c 2008-06-12 15:09:45.311815896 +0200
+@@ -0,0 +1,863 @@
++/*
++ * This file is part of UBIFS.
++ *
++ * Copyright (C) 2006-2008 Nokia Corporation.
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published by
++ * the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but WITHOUT
++ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
++ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
++ * more details.
++ *
++ * You should have received a copy of the GNU General Public License along with
++ * this program; if not, write to the Free Software Foundation, Inc., 51
++ * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
++ *
++ * Authors: Adrian Hunter
++ * Artem Bityutskiy (Битюцкий Артём)
++ */
++
++/*
++ * This file implements the budgeting unit which is responsible for UBIFS space
++ * management.
++ *
++ * Factors such as compression, wasted space at the ends of LEBs, space in other
++ * journal heads, the effect of updates on the index, and so on, make it
++ * impossible to accurately predict the amount of space needed. Consequently
++ * approximations are used.
++ */
++
++#include "ubifs.h"
++#include <linux/writeback.h>
++#include <asm/div64.h>
++
++/*
++ * When pessimistic budget calculations say that there is no enough space,
++ * UBIFS starts writing back dirty inodes and pages, doing garbage collection,
++ * or committing. The below constants define maximum number of times UBIFS
++ * repeats the operations.
++ */
++#define MAX_SHRINK_RETRIES 8
++#define MAX_GC_RETRIES 4
++#define MAX_CMT_RETRIES 2
++#define MAX_NOSPC_RETRIES 1
++
++/*
++ * The below constant defines amount of dirty pages which should be written
++ * back at when trying to shrink the liability.
++ */
++#define NR_TO_WRITE 16
++
++/**
++ * struct retries_info - information about re-tries while making free space.
++ * @prev_liability: previous liability
++ * @shrink_cnt: how many times the liability was shrinked
++ * @shrink_retries: count of liability shrink re-tries (increased when
++ * liability does not shrink)
++ * @try_gc: GC should be tried first
++ * @gc_retries: how many times GC was run
++ * @cmt_retries: how many times commit has been done
++ * @nospc_retries: how many times GC returned %-ENOSPC
++ *
++ * Since we consider budgeting to be the fast-path, and this structure has to
++ * be allocated on stack and zeroed out, we make it smaller using bit-fields.
++ */
++struct retries_info {
++ long long prev_liability;
++ unsigned int shrink_cnt;
++ unsigned int shrink_retries:5;
++ unsigned int try_gc:1;
++ unsigned int gc_retries:4;
++ unsigned int cmt_retries:3;
++ unsigned int nospc_retries:1;
++};
++
++/**
++ * shrink_liability - write-back some dirty pages/inodes.
++ * @c: UBIFS file-system description object
++ * @nr_to_write: how many dirty pages to write-back
++ *
++ * This function shrinks UBIFS liability by means of writing back some amount
++ * of dirty inodes and their pages. Returns the amount of pages which were
++ * written back. The returned value does not include dirty inodes which were
++ * synchronized.
++ *
++ * Note, this function synchronizes even VFS inodes which are locked
++ * (@i_mutex) by the caller of the budgeting function, because write-back does
++ * not touch @i_mutex.
++ */
++static int shrink_liability(struct ubifs_info *c, int nr_to_write)
++{
++ struct writeback_control wbc = {
++ .sync_mode = WB_SYNC_NONE,
++ .range_end = LLONG_MAX,
++ .nr_to_write = nr_to_write,
++ };
++
++ generic_sync_sb_inodes(c->vfs_sb, &wbc);
++ dbg_budg("%ld pages were written back", nr_to_write - wbc.nr_to_write);
++ return nr_to_write - wbc.nr_to_write;
++}
++
++
++/**
++ * run_gc - run garbage collector.
++ * @c: UBIFS file-system description object
++ *
++ * This function runs garbage collector to make some more free space. Returns
++ * zero if a free LEB has been produced, %-EAGAIN if commit is required, and a
++ * negative error code in case of failure.
++ */
++static int run_gc(struct ubifs_info *c)
++{
++ int err, lnum;
++
++ /* Make some free space by garbage-collecting dirty space */
++ down_read(&c->commit_sem);
++ lnum = ubifs_garbage_collect(c, 1);
++ up_read(&c->commit_sem);
++ if (lnum < 0)
++ return lnum;
++
++ /* GC freed one LEB, return it to lprops */
++ dbg_budg("GC freed LEB %d", lnum);
++ err = ubifs_return_leb(c, lnum);
++ if (err)
++ return err;
++
++ return 0;
++}
++
++/**
++ * make_free_space - make more free space on the file-system.
++ * @c: UBIFS file-system description object
++ * @ri: information about previous invocations of this function
++ *
++ * This function is called when an operation cannot be budgeted because there
++ * is supposedly no free space. But in most cases there is some free space:
++ * o budgeting is pessimistic, so it always budgets more then it is actually
++ * needed, so shrinking the liability is one way to make free space - the
++ * cached data will take less space then it was budgeted for;
++ * o GC may turn some dark space into free space (budgeting treats dark space
++ * as not available);
++ * o commit may free some LEB, i.e., turn freeable LEBs into free LEBs.
++ *
++ * So this function tries to do the above. Returns %-EAGAIN if some free space
++ * was presumably made and the caller has to re-try budgeting the operation.
++ * Returns %-ENOSPC if it couldn't do more free space, and other negative error
++ * codes on failures.
++ */
++static int make_free_space(struct ubifs_info *c, struct retries_info *ri)
++{
++ int err;
++
++ /*
++ * If we have some dirty pages and inodes (liability), try to write
++ * them back unless this was tried too many times without effect
++ * already.
++ */
++ if (ri->shrink_retries < MAX_SHRINK_RETRIES && !ri->try_gc) {
++ long long liability;
++
++ spin_lock(&c->space_lock);
++ liability = c->budg_idx_growth + c->budg_data_growth +
++ c->budg_dd_growth;
++ spin_unlock(&c->space_lock);
++
++ if (ri->prev_liability >= liability) {
++ /* Liability does not shrink, next time try GC then */
++ ri->shrink_retries += 1;
++ if (ri->gc_retries < MAX_GC_RETRIES)
++ ri->try_gc = 1;
++ dbg_budg("liability did not shrink: retries %d of %d",
++ ri->shrink_retries, MAX_SHRINK_RETRIES);
++ }
++
++ dbg_budg("force write-back (count %d)", ri->shrink_cnt);
++ shrink_liability(c, NR_TO_WRITE + ri->shrink_cnt);
++
++ ri->prev_liability = liability;
++ ri->shrink_cnt += 1;
++ return -EAGAIN;
++ }
++
++ /*
++ * Try to run garbage collector unless it was already tried too many
++ * times.
++ */
++ if (ri->gc_retries < MAX_GC_RETRIES) {
++ ri->gc_retries += 1;
++ dbg_budg("run GC, retries %d of %d",
++ ri->gc_retries, MAX_GC_RETRIES);
++
++ ri->try_gc = 0;
++ err = run_gc(c);
++ if (!err)
++ return -EAGAIN;
++
++ if (err == -EAGAIN) {
++ dbg_budg("GC asked to commit");
++ err = ubifs_run_commit(c);
++ if (err)
++ return err;
++ return -EAGAIN;
++ }
++
++ if (err != -ENOSPC)
++ return err;
++
++ /*
++ * GC could not make any progress. If this is the first time,
++ * then it makes sense to try to commit, because it might make
++ * some dirty space.
++ */
++ dbg_budg("GC returned -ENOSPC, retries %d",
++ ri->nospc_retries);
++ if (ri->nospc_retries >= MAX_NOSPC_RETRIES)
++ return err;
++ ri->nospc_retries += 1;
++ }
++
++ /* Neither GC nor write-back helped, try to commit */
++ if (ri->cmt_retries < MAX_CMT_RETRIES) {
++ ri->cmt_retries += 1;
++ dbg_budg("run commit, retries %d of %d",
++ ri->cmt_retries, MAX_CMT_RETRIES);
++ err = ubifs_run_commit(c);
++ if (err)
++ return err;
++ return -EAGAIN;
++ }
++
++ return -ENOSPC;
++}
++
++/**
++ * ubifs_calc_min_idx_lebs - calculate amount of eraseblocks for the index.
++ * @c: UBIFS file-system description object
++ *
++ * This function calculates and returns the number of eraseblocks which should
++ * be kept for index usage.
++ */
++int ubifs_calc_min_idx_lebs(struct ubifs_info *c)
++{
++ int ret;
++ uint64_t idx_size;
++
++ idx_size = c->old_idx_sz + c->budg_idx_growth + c->budg_uncommitted_idx;
++
++ /* And make sure we have twice the index size of space reserved */
++ idx_size <<= 1;
++
++ /*
++ * We do not maintain 'old_idx_size' as 'old_idx_lebs'/'old_idx_bytes'
++ * pair, nor similarly the two variables for the new index size, so we
++ * have to do this costly 64-bit division on fast-path.
++ */
++ if (do_div(idx_size, c->leb_size - c->max_idx_node_sz))
++ ret = idx_size + 1;
++ else
++ ret = idx_size;
++ /*
++ * The index head is not available for the in-the-gaps method, so add an
++ * extra LEB to compensate.
++ */
++ ret += 1;
++ /*
++ * At present the index needs at least 2 LEBs: one for the index head
++ * and one for in-the-gaps method (which currently does not cater for
++ * the index head and so excludes it from consideration).
++ */
++ if (ret < 2)
++ ret = 2;
++ return ret;
++}
++
++/**
++ * ubifs_calc_available - calculate available FS space.
++ * @c: UBIFS file-system description object
++ *
++ * This function calculates and returns amount of FS space available for use.
++ */
++long long ubifs_calc_available(const struct ubifs_info *c)
++{
++ long long available, subtract_lebs;
++
++ /*
++ * Force the amount available to the total size reported if the used
++ * space is zero.
++ */
++ if (c->lst.total_used <= UBIFS_INO_NODE_SZ &&
++ c->budg_data_growth + c->budg_dd_growth == 0) {
++ /* Do the same calculation as for c->block_cnt */
++ available = c->main_lebs - 2;
++ available *= c->leb_size - c->dark_wm;
++ return available;
++ }
++
++ available = c->main_bytes - c->lst.total_used;
++
++ /*
++ * Now 'available' contains theoretically available flash space
++ * assuming there is no index, so we have to subtract the space which
++ * is reserved for the index.
++ */
++ subtract_lebs = c->min_idx_lebs;
++
++ /* Take into account that GC reserves one LEB for its own needs */
++ subtract_lebs += 1;
++
++ /*
++ * The GC journal head LEB is not really accessible. And since
++ * different write types go to different heads, we may count only on
++ * one head's space.
++ */
++ subtract_lebs += c->jhead_cnt - 1;
++
++ /* We also reserve one LEB for deletions, which bypass budgeting */
++ subtract_lebs += 1;
++
++ available -= subtract_lebs * c->leb_size;
++
++ /* Subtract the dead space which is not available for use */
++ available -= c->lst.total_dead;
++
++ /*
++ * Subtract dark space, which might or might not be usable - it depends
++ * on the data which we have on the media and which will be written. If
++ * this is a lot of uncompressed or not-compressible data, the dark
++ * space cannot be used.
++ */
++ available -= c->lst.total_dark;
++
++ /*
++ * However, there is more dark space. The index may be bigger than
++ * min_idx_lebs. Those extra LEBs are assumed to be available, but
++ * their dark space is not included in total_dark, so it is subtracted
++ * here.
++ */
++ if (c->lst.idx_lebs > c->min_idx_lebs) {
++ subtract_lebs = c->lst.idx_lebs - c->min_idx_lebs;
++ available -= subtract_lebs * c->dark_wm;
++ }
++
++ /* The calculations are rough and may end up with a negative number */
++ return available > 0 ? available : 0;
++}
++
++/**
++ * rp_can_write - check whether the user is allowed to write.
++ * @c: UBIFS file-system description object
++ * @avail: available space on FS
++ *
++ * UBIFS has so-called "reserved pool" which is flash space reserved
++ * for the superuser and for uses whose UID/GID is recorded in UBIFS superblock.
++ * This function checks whether current user is allowed to write
++ * to the file-system - it returns %1 if there is plenty of space or the user
++ * is eligible to use the reserved pool and %0 otherwise.
++ */
++static int rp_can_write(struct ubifs_info *c, long long avail)
++{
++ if (avail > c->rp_size || current->fsuid == c->rp_uid ||
++ capable(CAP_SYS_RESOURCE) ||
++ (c->rp_gid != 0 && in_group_p(c->rp_gid)))
++ return 1;
++
++ return 0;
++}
++
++/**
++ * do_budget_space - reserve flash space for index and data growth.
++ * @c: UBIFS file-system description object
++ *
++ * This function makes sure UBIFS has enough free eraseblocks for index growth
++ * and data.
++ *
++ * When budgeting index space, UBIFS reserves twice as more LEBs as the index
++ * would take if it was consolidated and written to the flash. This guarantees
++ * that the "in-the-gaps" commit method always succeeds and UBIFS will always
++ * be able to commit dirty index. So this function basically adds amount of
++ * budgeted index space to the size of the current index, multiplies this by 2,
++ * and makes sure this does not exceed the amount of free eraseblocks.
++ *
++ * Notes about @c->min_idx_lebs and @c->lst.idx_lebs variables:
++ * o @c->lst.idx_lebs is the number of LEBs the index currently uses. It might
++ * be large, because UBIFS does not do any index consolidation as long as
++ * there is free space. IOW, the index may take a lot of LEBs, but the LEBs
++ * will contain a lot of dirt.
++ * o @c->min_idx_lebs is the the index presumably takes. IOW, the index may be
++ * consolidated to take up to @c->min_idx_lebs LEBs.
++ *
++ * This function returns zero in case of success, and %-ENOSPC in case of
++ * failure.
++ */
++static int do_budget_space(struct ubifs_info *c)
++{
++ long long outstanding, available;
++ int lebs, rsvd_idx_lebs, min_idx_lebs;
++
++ /* First budget index space */
++ min_idx_lebs = ubifs_calc_min_idx_lebs(c);
++
++ /* Now 'min_idx_lebs' contains number of LEBs to reserve */
++ if (min_idx_lebs > c->lst.idx_lebs)
++ rsvd_idx_lebs = min_idx_lebs - c->lst.idx_lebs;
++ else
++ rsvd_idx_lebs = 0;
++
++ /*
++ * The number of LEBs that are available to be used by the index is:
++ *
++ * @c->lst.empty_lebs + @c->freeable_cnt + @c->idx_gc_cnt -
++ * @c->lst.taken_empty_lebs
++ *
++ * @empty_lebs are available because they are empty. @freeable_cnt are
++ * available because they contain only free and dirty space and the
++ * index allocation always occurs after wbufs are synch'ed.
++ * @idx_gc_cnt are available because they are index LEBs that have been
++ * garbage collected (including trivial GC) and are awaiting the commit
++ * before they can be unmapped - note that the in-the-gaps method will
++ * grab these if it needs them. @taken_empty_lebs are empty_lebs that
++ * have already been allocated for some purpose (also includes those
++ * LEBs on the @idx_gc list).
++ *
++ * Note, @taken_empty_lebs may temporarily be higher by one because of
++ * the way we serialize LEB allocations and budgeting. See a comment in
++ * 'ubifs_find_free_space()'.
++ */
++ lebs = c->lst.empty_lebs + c->freeable_cnt + c->idx_gc_cnt -
++ c->lst.taken_empty_lebs;
++ if (unlikely(rsvd_idx_lebs > lebs)) {
++ dbg_budg("out of indexing space: min_idx_lebs %d (old %d), "
++ "rsvd_idx_lebs %d", min_idx_lebs, c->min_idx_lebs,
++ rsvd_idx_lebs);
++ return -ENOSPC;
++ }
++
++ available = ubifs_calc_available(c);
++ outstanding = c->budg_data_growth + c->budg_dd_growth;
++
++ if (unlikely(available < outstanding)) {
++ dbg_budg("out of data space: available %lld, outstanding %lld",
++ available, outstanding);
++ return -ENOSPC;
++ }
++
++ if (!rp_can_write(c, available - outstanding))
++ return -ENOSPC;
++
++ c->min_idx_lebs = min_idx_lebs;
++ return 0;
++}
++
++/**
++ * calc_idx_growth - calculate approximate index growth from budgeting request.
++ * @c: UBIFS file-system description object
++ * @req: budgeting request
++ *
++ * For now we assume each new node adds one znode. But this is rather poor
++ * approximation, though.
++ */
++static int calc_idx_growth(const struct ubifs_info *c,
++ const struct ubifs_budget_req *req)
++{
++ int znodes;
++
++ znodes = req->new_ino + (req->new_page << UBIFS_BLOCKS_PER_PAGE_SHIFT) +
++ req->new_dent;
++ return znodes * c->max_idx_node_sz;
++}
++
++/**
++ * calc_data_growth - calculate approximate amount of new data from budgeting
++ * request.
++ * @c: UBIFS file-system description object
++ * @req: budgeting request
++ */
++static int calc_data_growth(const struct ubifs_info *c,
++ const struct ubifs_budget_req *req)
++{
++ int data_growth;
++
++ data_growth = req->new_ino ? c->inode_budget : 0;
++ if (req->new_page)
++ data_growth += c->page_budget;
++ if (req->new_dent)
++ data_growth += c->dent_budget;
++ data_growth += req->new_ino_d;
++
++ return data_growth;
++}
++
++/**
++ * calc_dd_growth - calculate approximate amount of data which makes other data
++ * dirty from budgeting request.
++ * @c: UBIFS file-system description object
++ * @req: budgeting request
++ */
++static int calc_dd_growth(const struct ubifs_info *c,
++ const struct ubifs_budget_req *req)
++{
++ int dd_growth;
++
++ dd_growth = req->dirtied_page ? c->page_budget : 0;
++
++ if (req->dirtied_ino)
++ dd_growth += c->inode_budget << (req->dirtied_ino - 1);
++ if (req->mod_dent)
++ dd_growth += c->dent_budget;
++ dd_growth += req->dirtied_ino_d;
++
++ return dd_growth;
++}
++
++/**
++ * ubifs_budget_space - ensure there is enough space to complete an operation.
++ * @c: UBIFS file-system description object
++ * @req: budget request
++ *
++ * This function allocates budget for an operation. It uses pessimistic
++ * approximation of how much flash space the operation needs. The goal of this
++ * function is to make sure UBIFS always has flash space to flush all dirty
++ * pages, dirty inodes, and dirty znodes (liability). This function may force
++ * commit, garbage-collection or write-back. Returns zero in case of success,
++ * %-ENOSPC if there is no free space and other negative error codes in case of
++ * failures.
++ */
++int ubifs_budget_space(struct ubifs_info *c, struct ubifs_budget_req *req)
++{
++ int uninitialized_var(cmt_retries), uninitialized_var(wb_retries);
++ int err, idx_growth, data_growth, dd_growth;
++ struct retries_info ri;
++
++ data_growth = calc_data_growth(c, req);
++ dd_growth = calc_dd_growth(c, req);
++ if (!data_growth && !dd_growth)
++ return 0;
++ idx_growth = calc_idx_growth(c, req);
++ memset(&ri, 0, sizeof(struct retries_info));
++
++again:
++ spin_lock(&c->space_lock);
++ ubifs_assert(c->budg_idx_growth >= 0);
++ ubifs_assert(c->budg_data_growth >= 0);
++ ubifs_assert(c->budg_dd_growth >= 0);
++
++ c->budg_idx_growth += idx_growth;
++ c->budg_data_growth += data_growth;
++ c->budg_dd_growth += dd_growth;
++
++ err = do_budget_space(c);
++ if (unlikely(err)) {
++ /* Restore the old values */
++ c->budg_idx_growth -= idx_growth;
++ c->budg_data_growth -= data_growth;
++ c->budg_dd_growth -= dd_growth;
++ spin_unlock(&c->space_lock);
++
++ goto make_space;
++ }
++
++ req->idx_growth = idx_growth;
++ req->data_growth = data_growth;
++ req->dd_growth = dd_growth;
++ spin_unlock(&c->space_lock);
++
++ return 0;
++
++make_space:
++ err = make_free_space(c, &ri);
++ if (err == -EAGAIN) {
++ dbg_budg("try again");
++ cond_resched();
++ goto again;
++ } else if (err == -ENOSPC)
++ dbg_budg("FS is full, -ENOSPC");
++ else
++ ubifs_err("cannot budget space, error %d", err);
++
++ return err;
++}
++
++/**
++ * ubifs_release_budget - release budgeted free space.
++ * @c: UBIFS file-system description object
++ * @req: budget request
++ *
++ * This function releases the space budgeted by 'ubifs_budget_space()'. Note,
++ * since the index changes (which were budgeted for in @req->idx_growth) will
++ * only be written to the media on commit, this function moves the index budget
++ * from @c->budg_idx_growth to @c->budg_uncommitted_idx. The latter will be
++ * zeroed by the commit operation.
++ */
++void ubifs_release_budget(struct ubifs_info *c, struct ubifs_budget_req *req)
++{
++ if (!req->data_growth && !req->dd_growth)
++ return;
++
++ if (req->idx_growth == -1)
++ req->idx_growth = calc_idx_growth(c, req);
++
++ spin_lock(&c->space_lock);
++ c->budg_idx_growth -= req->idx_growth;
++ c->budg_uncommitted_idx += req->idx_growth;
++ c->budg_data_growth -= req->data_growth;
++ c->budg_dd_growth -= req->dd_growth;
++ c->min_idx_lebs = ubifs_calc_min_idx_lebs(c);
++
++ ubifs_assert(c->budg_idx_growth >= 0);
++ ubifs_assert(c->budg_data_growth >= 0);
++ ubifs_assert(c->min_idx_lebs < c->main_lebs);
++ spin_unlock(&c->space_lock);
++}
++
++/**
++ * ubifs_convert_page_budget - convert budget of a new page.
++ * @c: UBIFS file-system description object
++ *
++ * This function converts budget which was allocated for a new page of data to
++ * the budget of changing an existing page of data. The latter is not larger
++ * then the former, so this function only does simple re-calculation and does
++ * not involve any write-back.
++ */
++void ubifs_convert_page_budget(struct ubifs_info *c)
++{
++ spin_lock(&c->space_lock);
++ /* Release the index growth reservation */
++ c->budg_idx_growth -= c->max_idx_node_sz << UBIFS_BLOCKS_PER_PAGE_SHIFT;
++ /* Release the data growth reservation */
++ c->budg_data_growth -= c->page_budget;
++ /* Increase the dirty data growth reservation instead */
++ c->budg_dd_growth += c->page_budget;
++ /* And re-calculate the indexing space reservation */
++ c->min_idx_lebs = ubifs_calc_min_idx_lebs(c);
++ spin_unlock(&c->space_lock);
++}
++
++/**
++ * ubifs_budget_inode_op - budget an operation on inode.
++ * @c: UBIFS file-system description object
++ * @inode: VFS inode which will be made dirty by the operation
++ * @req: budget request of the operation
++ *
++ * This function is called to get budget for an operation which changes an
++ * inode. The inode may be in dirty or clean state. The former means there is
++ * no need to allocate the budget as it has already been allocated before. The
++ * latter means that the inode change budget has to be allocated.
++ *
++ * The caller has to pass the inode which is going to be changed. This function
++ * acquires budget the for as described in @req plus the budget for changing
++ * the inode dirty, if needed. Returns zero in case of success, %-ENOSPC if
++ * there is no more flash space, and other negative error codes in case of
++ * failure.
++ *
++ * Note, upon exit, this function leaves the inode locked, and the
++ * 'ubifs_release_ino_dirty()' or 'ubifs_release_ino_clean()' function has to
++ * be called to unlock it.
++ */
++int ubifs_budget_inode_op(struct ubifs_info *c, struct inode *inode,
++ struct ubifs_budget_req *req)
++{
++ struct ubifs_inode *ui = ubifs_inode(inode);
++ int err, old = req->dirtied_ino;
++
++ ubifs_assert(req->dirtied_ino <= 3);
++ ubifs_assert(req->dirtied_ino_d <= UBIFS_MAX_INO_DATA * 3);
++
++again:
++ /*
++ * If the inode is clean, it will be dirtied by this operation and we
++ * have to budget for this.
++ */
++ req->dirtied_ino += !ui->dirty;
++ if (req->dirtied_ino > old)
++ req->dirtied_ino_d += ui->data_len;
++
++ /*
++ * Note, if the budget request does not actually request anything
++ * (i.e., @req contains only zeroes), 'ubifs_budget_space()' will
++ * return almost straight away.
++ */
++ err = ubifs_budget_space(c, req);
++ if (unlikely(err))
++ return err;
++
++ mutex_lock(&ui->budg_mutex);
++
++ if (req->dirtied_ino != old + !ui->dirty) {
++ /* The inode has probably been written back meanwhile */
++ ubifs_release_budget(c, req);
++ mutex_unlock(&ui->budg_mutex);
++ req->dirtied_ino = old;
++ req->dirtied_ino_d -= ui->data_len;
++ goto again;
++ }
++
++ UBIFS_DBG(ui->budgeted = 1);
++ return 0;
++}
++
++/**
++ * ubifs_release_ino_dirty - release budget of a "dirtying" operation.
++ * @c: UBIFS file-system description object
++ * @inode: VFS inode the operation worked on
++ * @req: budget to release
++ *
++ * This function has to be called at the end of VFS operations which acquired
++ * budget via 'ubifs_budget_inode_op()'. It assumes that the inode has been
++ * marked as dirty and will be synchronized later by write-back, so it does not
++ * release the budget of the inode.
++ *
++ * Note, this function also avoids releasing page budgets which are released
++ * separately.
++ */
++void ubifs_release_ino_dirty(struct ubifs_info *c, struct inode *inode,
++ struct ubifs_budget_req *req)
++{
++ ubifs_assert(req->dirtied_ino <= 4);
++ ubifs_assert(req->dirtied_ino_d <= UBIFS_MAX_INO_DATA * 4);
++ ubifs_assert(req->idx_growth >= 0);
++ ubifs_assert(req->data_growth >= 0);
++ ubifs_assert(req->dd_growth >= 0);
++
++ if (req->dirtied_ino) {
++ req->dd_growth -= c->inode_budget;
++ req->dd_growth -= req->dirtied_ino_d;
++ }
++
++ if (req->dirtied_page) {
++ req->dd_growth -= c->page_budget;
++ ubifs_assert(req->new_page == 0);
++ } else if (req->new_page) {
++ req->idx_growth -=
++ c->max_idx_node_sz << UBIFS_BLOCKS_PER_PAGE_SHIFT;
++ req->data_growth -= c->page_budget;
++ ubifs_assert(req->dirtied_page == 0);
++ }
++
++ ubifs_assert(req->dd_growth >= 0);
++ ubifs_release_budget(c, req);
++ mutex_unlock(&ubifs_inode(inode)->budg_mutex);
++}
++
++/**
++ * ubifs_cancel_ino_op - cancel budget of an operation on inode.
++ * @c: UBIFS file-system description object
++ * @inode: VFS inode the operation worked on
++ * @req: budget to release
++ *
++ * This function has to be called if the operation failed and whole budget has
++ * to be released, including the budget for inode which would had been
++ * dirtied. It is important not to mark the inode dirty before calling this
++ * function.
++ */
++void ubifs_cancel_ino_op(struct ubifs_info *c, struct inode *inode,
++ struct ubifs_budget_req *req)
++{
++ ubifs_assert(req->dirtied_ino <= 4);
++ ubifs_assert(req->dirtied_ino_d <= UBIFS_MAX_INO_DATA * 4);
++ ubifs_assert(req->idx_growth >= 0);
++ ubifs_assert(req->data_growth >= 0);
++ ubifs_assert(req->dd_growth >= 0);
++
++ ubifs_release_budget(c, req);
++ mutex_unlock(&ubifs_inode(inode)->budg_mutex);
++}
++
++/**
++ * ubifs_release_ino_clean - release budget of a "cleaning" operation.
++ * @c: UBIFS file-system description object
++ * @inode: VFS inode the operation worked on
++ * @req: budget to release
++ *
++ * This function has to be called at the end of VFS operations which acquired
++ * budget via 'ubifs_budget_inode_op()'. It assumed the operation synchronized
++ * the inode, so it marks the inode clean, unlocks it and releases whole budget.
++ *
++ * Note, this function also avoids releasing page budgets which are released
++ * separately.
++ */
++void ubifs_release_ino_clean(struct ubifs_info *c, struct inode *inode,
++ struct ubifs_budget_req *req)
++{
++ struct ubifs_inode *ui = ubifs_inode(inode);
++
++ ubifs_assert(req->dirtied_ino <= 4);
++ ubifs_assert(req->dirtied_ino_d <= UBIFS_MAX_INO_DATA * 4);
++ ubifs_assert(req->idx_growth >= 0);
++ ubifs_assert(req->data_growth >= 0);
++ ubifs_assert(req->dd_growth >= 0);
++ ubifs_assert(!req->dirtied_page);
++ ubifs_assert(!req->new_page);
++ UBIFS_DBG(ui->budgeted = 0);
++
++ ubifs_release_budget(c, req);
++ if (ui->dirty) {
++ ui->dirty = 0;
++ /*
++ * Note, VFS still treats the inode as dirty and
++ * 'ubifs_write_inode()' will be called, but it'll do nothing
++ * because @ui->dirty is %0.
++ */
++ atomic_long_dec(&c->dirty_ino_cnt);
++ }
++ mutex_unlock(&ubifs_inode(inode)->budg_mutex);
++}
++
++/**
++ * ubifs_release_new_page_budget - release budget of a new page.
++ * @c: UBIFS file-system description object
++ *
++ * This is a helper function which releases budget corresponding to the budget
++ * of one new page of data.
++ */
++void ubifs_release_new_page_budget(struct ubifs_info *c)
++{
++ struct ubifs_budget_req req = { .new_page = 1,
++ .idx_growth = -1,
++ .data_growth = c->page_budget };
++
++ ubifs_release_budget(c, &req);
++}
++
++/**
++ * ubifs_budg_get_free_space - return amount of free space.
++ * @c: UBIFS file-system description object
++ *
++ * This function returns amount of free space on the file-system.
++ */
++long long ubifs_budg_get_free_space(struct ubifs_info *c)
++{
++ int min_idx_lebs, rsvd_idx_lebs;
++ long long available, outstanding, free;
++
++ /* Do exactly the same calculations as in 'do_budget_space()' */
++ spin_lock(&c->space_lock);
++ min_idx_lebs = ubifs_calc_min_idx_lebs(c);
++
++ if (min_idx_lebs > c->lst.idx_lebs)
++ rsvd_idx_lebs = min_idx_lebs - c->lst.idx_lebs;
++ else
++ rsvd_idx_lebs = 0;
++
++ if (rsvd_idx_lebs > c->lst.empty_lebs + c->freeable_cnt + c->idx_gc_cnt
++ - c->lst.taken_empty_lebs) {
++ spin_unlock(&c->space_lock);
++ return 0;
++ }
++
++ c->min_idx_lebs = min_idx_lebs;
++ available = ubifs_calc_available(c);
++ outstanding = c->budg_data_growth + c->budg_dd_growth;
++ spin_unlock(&c->space_lock);
++
++ if (available > outstanding)
++ free = ubifs_reported_space(c, available - outstanding);
++ else
++ free = 0;
++
++ return free;
++}
+diff --exclude=.git -urN linux-2.6.25.6/fs/ubifs/commit.c avr32-2.6/fs/ubifs/commit.c
+--- linux-2.6.25.6/fs/ubifs/commit.c 1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/fs/ubifs/commit.c 2008-06-12 15:09:45.311815896 +0200
+@@ -0,0 +1,677 @@
++/*
++ * This file is part of UBIFS.
++ *
++ * Copyright (C) 2006-2008 Nokia Corporation.
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published by
++ * the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but WITHOUT
++ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
++ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
++ * more details.
++ *
++ * You should have received a copy of the GNU General Public License along with
++ * this program; if not, write to the Free Software Foundation, Inc., 51
++ * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
++ *
++ * Authors: Adrian Hunter
++ * Artem Bityutskiy (Битюцкий Артём)
++ */
++
++/*
++ * This file implements functions that manage the running of the commit process.
++ * Each affected module has its own functions to accomplish their part in the
++ * commit and those functions are called here.
++ *
++ * The commit is the process whereby all updates to the index and LEB properties
++ * are written out together and the journal becomes empty. This keeps the
++ * file system consistent - at all times the state can be recreated by reading
++ * the index and LEB properties and then replaying the journal.
++ *
++ * The commit is split into two parts named "commit start" and "commit end".
++ * During commit start, the commit process has exclusive access to the journal
++ * by holding the commit semaphore down for writing. As few I/O operations as
++ * possible are performed during commit start, instead the nodes that are to be
++ * written are merely identified. During commit end, the commit semaphore is no
++ * longer held and the journal is again in operation, allowing users to continue
++ * to use the file system while the bulk of the commit I/O is performed. The
++ * purpose of this two-step approach is to prevent the commit from causing any
++ * latency blips. Note that in any case, the commit does not prevent lookups
++ * (as permitted by the TNC mutex), or access to VFS data structures e.g. page
++ * cache.
++ */
++
++#include <linux/freezer.h>
++#include <linux/kthread.h>
++#include "ubifs.h"
++
++/**
++ * do_commit - commit the journal.
++ * @c: UBIFS file-system description object
++ *
++ * This function implements UBIFS commit. It has to be called with commit lock
++ * locked. Returns zero in case of success and a negative error code in case of
++ * failure.
++ */
++static int do_commit(struct ubifs_info *c)
++{
++ int err, new_ltail_lnum, old_ltail_lnum, i;
++ struct ubifs_zbranch zroot;
++ struct ubifs_lp_stats lst;
++
++ dbg_cmt("start");
++ if (c->ro_media) {
++ err = -EROFS;
++ goto out_up;
++ }
++
++ /* Sync all write buffers (necessary for recovery) */
++ for (i = 0; i < c->jhead_cnt; i++) {
++ err = ubifs_wbuf_sync(&c->jheads[i].wbuf);
++ if (err)
++ goto out_up;
++ }
++
++ err = ubifs_gc_start_commit(c);
++ if (err)
++ goto out_up;
++ err = dbg_check_lprops(c);
++ if (err)
++ goto out_up;
++ err = ubifs_log_start_commit(c, &new_ltail_lnum);
++ if (err)
++ goto out_up;
++ err = ubifs_tnc_start_commit(c, &zroot);
++ if (err)
++ goto out_up;
++ err = ubifs_lpt_start_commit(c);
++ if (err)
++ goto out_up;
++ err = ubifs_orphan_start_commit(c);
++ if (err)
++ goto out_up;
++
++ ubifs_get_lp_stats(c, &lst);
++
++ up_write(&c->commit_sem);
++
++ err = ubifs_tnc_end_commit(c);
++ if (err)
++ goto out;
++ err = ubifs_lpt_end_commit(c);
++ if (err)
++ goto out;
++ err = ubifs_orphan_end_commit(c);
++ if (err)
++ goto out;
++ old_ltail_lnum = c->ltail_lnum;
++ err = ubifs_log_end_commit(c, new_ltail_lnum);
++ if (err)
++ goto out;
++ err = dbg_check_old_index(c, &zroot);
++ if (err)
++ goto out;
++
++ mutex_lock(&c->mst_mutex);
++ c->mst_node->cmt_no = cpu_to_le64(++c->cmt_no);
++ c->mst_node->log_lnum = cpu_to_le32(new_ltail_lnum);
++ c->mst_node->root_lnum = cpu_to_le32(zroot.lnum);
++ c->mst_node->root_offs = cpu_to_le32(zroot.offs);
++ c->mst_node->root_len = cpu_to_le32(zroot.len);
++ c->mst_node->ihead_lnum = cpu_to_le32(c->ihead_lnum);
++ c->mst_node->ihead_offs = cpu_to_le32(c->ihead_offs);
++ c->mst_node->index_size = cpu_to_le64(c->old_idx_sz);
++ c->mst_node->lpt_lnum = cpu_to_le32(c->lpt_lnum);
++ c->mst_node->lpt_offs = cpu_to_le32(c->lpt_offs);
++ c->mst_node->nhead_lnum = cpu_to_le32(c->nhead_lnum);
++ c->mst_node->nhead_offs = cpu_to_le32(c->nhead_offs);
++ c->mst_node->ltab_lnum = cpu_to_le32(c->ltab_lnum);
++ c->mst_node->ltab_offs = cpu_to_le32(c->ltab_offs);
++ c->mst_node->lsave_lnum = cpu_to_le32(c->lsave_lnum);
++ c->mst_node->lsave_offs = cpu_to_le32(c->lsave_offs);
++ c->mst_node->lscan_lnum = cpu_to_le32(c->lscan_lnum);
++ c->mst_node->empty_lebs = cpu_to_le32(lst.empty_lebs);
++ c->mst_node->idx_lebs = cpu_to_le32(lst.idx_lebs);
++ c->mst_node->total_free = cpu_to_le64(lst.total_free);
++ c->mst_node->total_dirty = cpu_to_le64(lst.total_dirty);
++ c->mst_node->total_used = cpu_to_le64(lst.total_used);
++ c->mst_node->total_dead = cpu_to_le64(lst.total_dead);
++ c->mst_node->total_dark = cpu_to_le64(lst.total_dark);
++ if (c->no_orphs)
++ c->mst_node->flags |= cpu_to_le32(UBIFS_MST_NO_ORPHS);
++ else
++ c->mst_node->flags &= ~cpu_to_le32(UBIFS_MST_NO_ORPHS);
++ err = ubifs_write_master(c);
++ mutex_unlock(&c->mst_mutex);
++ if (err)
++ goto out;
++
++ err = ubifs_log_post_commit(c, old_ltail_lnum);
++ if (err)
++ goto out;
++ err = ubifs_gc_end_commit(c);
++ if (err)
++ goto out;
++ err = ubifs_lpt_post_commit(c);
++ if (err)
++ goto out;
++
++ spin_lock(&c->cs_lock);
++ c->cmt_state = COMMIT_RESTING;
++ wake_up(&c->cmt_wq);
++ dbg_cmt("commit end");
++ spin_unlock(&c->cs_lock);
++
++ return 0;
++
++out_up:
++ up_write(&c->commit_sem);
++out:
++ ubifs_err("commit failed, error %d", err);
++ spin_lock(&c->cs_lock);
++ c->cmt_state = COMMIT_BROKEN;
++ wake_up(&c->cmt_wq);
++ spin_unlock(&c->cs_lock);
++ ubifs_ro_mode(c, err);
++ return err;
++}
++
++/**
++ * run_bg_commit - run background commit if it is needed.
++ * @c: UBIFS file-system description object
++ *
++ * This function runs background commit if it is needed. Returns zero in case
++ * of success and a negative error code in case of failure.
++ */
++static int run_bg_commit(struct ubifs_info *c)
++{
++ spin_lock(&c->cs_lock);
++ /*
++ * Run background commit only if background commit was requested or if
++ * commit is required.
++ */
++ if (c->cmt_state != COMMIT_BACKGROUND &&
++ c->cmt_state != COMMIT_REQUIRED)
++ goto out;
++ spin_unlock(&c->cs_lock);
++
++ down_write(&c->commit_sem);
++ spin_lock(&c->cs_lock);
++ if (c->cmt_state == COMMIT_REQUIRED)
++ c->cmt_state = COMMIT_RUNNING_REQUIRED;
++ else if (c->cmt_state == COMMIT_BACKGROUND)
++ c->cmt_state = COMMIT_RUNNING_BACKGROUND;
++ else
++ goto out_cmt_unlock;
++ spin_unlock(&c->cs_lock);
++
++ return do_commit(c);
++
++out_cmt_unlock:
++ up_write(&c->commit_sem);
++out:
++ spin_unlock(&c->cs_lock);
++ return 0;
++}
++
++/**
++ * ubifs_bg_thread - UBIFS background thread function.
++ * @info: points to the file-system description object
++ *
++ * This function implements various file-system background activities:
++ * o when a write-buffer timer expires it synchronizes the appropriate
++ * write-buffer;
++ * o when the journal is about to be full, it starts in-advance commit.
++ *
++ * Note, other stuff like background garbage collection may be added here in
++ * future.
++ */
++int ubifs_bg_thread(void *info)
++{
++ int err;
++ struct ubifs_info *c = info;
++
++ ubifs_msg("background thread \"%s\" started, PID %d",
++ c->bgt_name, current->pid);
++ set_freezable();
++
++ while (1) {
++ if (kthread_should_stop())
++ break;
++
++ if (try_to_freeze())
++ continue;
++
++ set_current_state(TASK_INTERRUPTIBLE);
++ /* Check if there is something to do */
++ if (!c->need_bgt) {
++ /*
++ * Nothing prevents us from going sleep now and
++ * be never woken up and block the task which
++ * could wait in 'kthread_stop()' forever.
++ */
++ if (kthread_should_stop())
++ break;
++ schedule();
++ continue;
++ } else
++ __set_current_state(TASK_RUNNING);
++
++ c->need_bgt = 0;
++ err = ubifs_bg_wbufs_sync(c);
++ if (err)
++ ubifs_ro_mode(c, err);
++
++ run_bg_commit(c);
++ cond_resched();
++ }
++
++ dbg_msg("background thread \"%s\" stops", c->bgt_name);
++ return 0;
++}
++
++/**
++ * ubifs_commit_required - set commit state to "required".
++ * @c: UBIFS file-system description object
++ *
++ * This function is called if a commit is required but cannot be done from the
++ * calling function, so it is just flagged instead.
++ */
++void ubifs_commit_required(struct ubifs_info *c)
++{
++ spin_lock(&c->cs_lock);
++ switch (c->cmt_state) {
++ case COMMIT_RESTING:
++ case COMMIT_BACKGROUND:
++ dbg_cmt("old: %s, new: %s", dbg_cstate(c->cmt_state),
++ dbg_cstate(COMMIT_REQUIRED));
++ c->cmt_state = COMMIT_REQUIRED;
++ break;
++ case COMMIT_RUNNING_BACKGROUND:
++ dbg_cmt("old: %s, new: %s", dbg_cstate(c->cmt_state),
++ dbg_cstate(COMMIT_RUNNING_REQUIRED));
++ c->cmt_state = COMMIT_RUNNING_REQUIRED;
++ break;
++ case COMMIT_REQUIRED:
++ case COMMIT_RUNNING_REQUIRED:
++ case COMMIT_BROKEN:
++ break;
++ }
++ spin_unlock(&c->cs_lock);
++}
++
++/**
++ * ubifs_request_bg_commit - notify the background thread to do a commit.
++ * @c: UBIFS file-system description object
++ *
++ * This function is called if the journal is full enough to make a commit
++ * worthwhile, so background thread is kicked to start it.
++ */
++void ubifs_request_bg_commit(struct ubifs_info *c)
++{
++ spin_lock(&c->cs_lock);
++ if (c->cmt_state == COMMIT_RESTING) {
++ dbg_cmt("old: %s, new: %s", dbg_cstate(c->cmt_state),
++ dbg_cstate(COMMIT_BACKGROUND));
++ c->cmt_state = COMMIT_BACKGROUND;
++ spin_unlock(&c->cs_lock);
++ ubifs_wake_up_bgt(c);
++ } else
++ spin_unlock(&c->cs_lock);
++}
++
++/**
++ * wait_for_commit - wait for commit.
++ * @c: UBIFS file-system description object
++ *
++ * This function sleeps until the commit operation is no longer running.
++ */
++static int wait_for_commit(struct ubifs_info *c)
++{
++ dbg_cmt("pid %d goes sleep", current->pid);
++
++ /*
++ * The following sleeps if the condition is false, and will be woken
++ * when the commit ends. It is possible, although very unlikely, that we
++ * will wake up and see the subsequent commit running, rather than the
++ * one we were waiting for, and go back to sleep. However, we will be
++ * woken again, so there is no danger of sleeping forever.
++ */
++ wait_event(c->cmt_wq, c->cmt_state != COMMIT_RUNNING_BACKGROUND &&
++ c->cmt_state != COMMIT_RUNNING_REQUIRED);
++ dbg_cmt("commit finished, pid %d woke up", current->pid);
++ return 0;
++}
++
++/**
++ * ubifs_run_commit - run or wait for commit.
++ * @c: UBIFS file-system description object
++ *
++ * This function runs commit and returns zero in case of success and a negative
++ * error code in case of failure.
++ */
++int ubifs_run_commit(struct ubifs_info *c)
++{
++ int err = 0;
++
++ spin_lock(&c->cs_lock);
++ if (c->cmt_state == COMMIT_BROKEN) {
++ err = -EINVAL;
++ goto out;
++ }
++
++ if (c->cmt_state == COMMIT_RUNNING_BACKGROUND)
++ /*
++ * We set the commit state to 'running required' to indicate
++ * that we want it to complete as quickly as possible.
++ */
++ c->cmt_state = COMMIT_RUNNING_REQUIRED;
++
++ if (c->cmt_state == COMMIT_RUNNING_REQUIRED) {
++ spin_unlock(&c->cs_lock);
++ return wait_for_commit(c);
++ }
++ spin_unlock(&c->cs_lock);
++
++ /* Ok, the commit is indeed needed */
++
++ down_write(&c->commit_sem);
++ spin_lock(&c->cs_lock);
++ /*
++ * Since we unlocked 'c->cs_lock', the state may have changed, so
++ * re-check it.
++ */
++ if (c->cmt_state == COMMIT_BROKEN) {
++ err = -EINVAL;
++ goto out_cmt_unlock;
++ }
++
++ if (c->cmt_state == COMMIT_RUNNING_BACKGROUND)
++ c->cmt_state = COMMIT_RUNNING_REQUIRED;
++
++ if (c->cmt_state == COMMIT_RUNNING_REQUIRED) {
++ up_write(&c->commit_sem);
++ spin_unlock(&c->cs_lock);
++ return wait_for_commit(c);
++ }
++ c->cmt_state = COMMIT_RUNNING_REQUIRED;
++ spin_unlock(&c->cs_lock);
++
++ err = do_commit(c);
++ return err;
++
++out_cmt_unlock:
++ up_write(&c->commit_sem);
++out:
++ spin_unlock(&c->cs_lock);
++ return err;
++}
++
++/**
++ * ubifs_gc_should_commit - determine if it is time for GC to run commit.
++ * @c: UBIFS file-system description object
++ *
++ * This function is called by garbage collection to determine if commit should
++ * be run. If commit state is @COMMIT_BACKGROUND, which means that the journal
++ * is full enough to start commit, this function returns true. It is not
++ * absolutely necessary to commit yet, but it feels like this should be better
++ * then to keep doing GC. This function returns %1 if GC has to initiate commit
++ * and %0 if not.
++ */
++int ubifs_gc_should_commit(struct ubifs_info *c)
++{
++ int ret = 0;
++
++ spin_lock(&c->cs_lock);
++ if (c->cmt_state == COMMIT_BACKGROUND) {
++ dbg_cmt("commit required now");
++ c->cmt_state = COMMIT_REQUIRED;
++ } else
++ dbg_cmt("commit not requested");
++ if (c->cmt_state == COMMIT_REQUIRED)
++ ret = 1;
++ spin_unlock(&c->cs_lock);
++ return ret;
++}
++
++#ifdef CONFIG_UBIFS_FS_DEBUG
++
++/**
++ * struct idx_node - hold index nodes during index tree traversal.
++ * @list: list
++ * @iip: index in parent (slot number of this indexing node in the parent
++ * indexing node)
++ * @upper_key: all keys in this indexing node have to be less or equivalent to
++ * this key
++ * @idx: index node (8-byte aligned because all node structures must be 8-byte
++ * aligned)
++ */
++struct idx_node {
++ struct list_head list;
++ int iip;
++ union ubifs_key upper_key;
++ struct ubifs_idx_node idx __attribute__((aligned(8)));
++};
++
++/**
++ * dbg_old_index_check_init - get information for the next old index check.
++ * @c: UBIFS file-system description object
++ * @zroot: root of the index
++ *
++ * This function records information about the index that will be needed for the
++ * next old index check i.e. 'dbg_check_old_index()'.
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++int dbg_old_index_check_init(struct ubifs_info *c, struct ubifs_zbranch *zroot)
++{
++ struct ubifs_idx_node *idx;
++ int lnum, offs, len, err = 0;
++
++ c->old_zroot = *zroot;
++
++ lnum = c->old_zroot.lnum;
++ offs = c->old_zroot.offs;
++ len = c->old_zroot.len;
++
++ idx = kmalloc(c->max_idx_node_sz, GFP_NOFS);
++ if (!idx)
++ return -ENOMEM;
++
++ err = ubifs_read_node(c, idx, UBIFS_IDX_NODE, len, lnum, offs);
++ if (err)
++ goto out;
++
++ c->old_zroot_level = le16_to_cpu(idx->level);
++ c->old_zroot_sqnum = le64_to_cpu(idx->ch.sqnum);
++out:
++ kfree(idx);
++ return err;
++}
++
++/**
++ * dbg_check_old_index - check the old copy of the index.
++ * @c: UBIFS file-system description object
++ * @zroot: root of the new index
++ *
++ * In order to be able to recover from an unclean unmount, a complete copy of
++ * the index must exist on flash. This is the "old" index. The commit process
++ * must write the "new" index to flash without overwriting or destroying any
++ * part of the old index. This function is run at commit end in order to check
++ * that the old index does indeed exist completely intact.
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++int dbg_check_old_index(struct ubifs_info *c, struct ubifs_zbranch *zroot)
++{
++ int lnum, offs, len, err = 0, uninitialized_var(last_level), child_cnt;
++ int first = 1, iip;
++ union ubifs_key lower_key, upper_key, l_key, u_key;
++ unsigned long long uninitialized_var(last_sqnum);
++ struct ubifs_idx_node *idx;
++ struct list_head list;
++ struct idx_node *i;
++ size_t sz;
++
++ if (!(ubifs_chk_flags & UBIFS_CHK_OLD_IDX))
++ goto out;
++
++ INIT_LIST_HEAD(&list);
++
++ sz = sizeof(struct idx_node) + ubifs_idx_node_sz(c, c->fanout) -
++ UBIFS_IDX_NODE_SZ;
++
++ /* Start at the old zroot */
++ lnum = c->old_zroot.lnum;
++ offs = c->old_zroot.offs;
++ len = c->old_zroot.len;
++ iip = 0;
++
++ /*
++ * Traverse the index tree preorder depth-first i.e. do a node and then
++ * its subtrees from left to right.
++ */
++ while (1) {
++ struct ubifs_branch *br;
++
++ /* Get the next index node */
++ i = kmalloc(sz, GFP_NOFS);
++ if (!i) {
++ err = -ENOMEM;
++ goto out_free;
++ }
++ i->iip = iip;
++ /* Keep the index nodes on our path in a linked list */
++ list_add_tail(&i->list, &list);
++ /* Read the index node */
++ idx = &i->idx;
++ err = ubifs_read_node(c, idx, UBIFS_IDX_NODE, len, lnum, offs);
++ if (err)
++ goto out_free;
++ /* Validate index node */
++ child_cnt = le16_to_cpu(idx->child_cnt);
++ if (child_cnt < 1 || child_cnt > c->fanout) {
++ err = 1;
++ goto out_dump;
++ }
++ if (first) {
++ first = 0;
++ /* Check root level and sqnum */
++ if (le16_to_cpu(idx->level) != c->old_zroot_level) {
++ err = 2;
++ goto out_dump;
++ }
++ if (le64_to_cpu(idx->ch.sqnum) != c->old_zroot_sqnum) {
++ err = 3;
++ goto out_dump;
++ }
++ /* Set last values as though root had a parent */
++ last_level = le16_to_cpu(idx->level) + 1;
++ last_sqnum = le64_to_cpu(idx->ch.sqnum) + 1;
++ key_read(c, ubifs_idx_key(c, idx), &lower_key);
++ highest_ino_key(c, &upper_key, INUM_WATERMARK);
++ }
++ key_copy(c, &upper_key, &i->upper_key);
++ if (le16_to_cpu(idx->level) != last_level - 1) {
++ err = 3;
++ goto out_dump;
++ }
++ /*
++ * The index is always written bottom up hence a child's sqnum
++ * is always less than the parents.
++ */
++ if (le64_to_cpu(idx->ch.sqnum) >= last_sqnum) {
++ err = 4;
++ goto out_dump;
++ }
++ /* Check key range */
++ key_read(c, ubifs_idx_key(c, idx), &l_key);
++ br = ubifs_idx_branch(c, idx, child_cnt - 1);
++ key_read(c, &br->key, &u_key);
++ if (keys_cmp(c, &lower_key, &l_key) > 0) {
++ err = 5;
++ goto out_dump;
++ }
++ if (keys_cmp(c, &upper_key, &u_key) < 0) {
++ err = 6;
++ goto out_dump;
++ }
++ if (keys_cmp(c, &upper_key, &u_key) == 0)
++ if (!is_hash_key(c, &u_key)) {
++ err = 7;
++ goto out_dump;
++ }
++ /* Go to next index node */
++ if (le16_to_cpu(idx->level) == 0) {
++ /* At the bottom, so go up until can go right */
++ while (1) {
++ /* Drop the bottom of the list */
++ list_del(&i->list);
++ kfree(i);
++ /* No more list means we are done */
++ if (list_empty(&list))
++ goto out;
++ /* Look at the new bottom */
++ i = list_entry(list.prev, struct idx_node,
++ list);
++ idx = &i->idx;
++ /* Can we go right */
++ if (iip + 1 < le16_to_cpu(idx->child_cnt)) {
++ iip = iip + 1;
++ break;
++ } else
++ /* Nope, so go up again */
++ iip = i->iip;
++ }
++ } else
++ /* Go down left */
++ iip = 0;
++ /*
++ * We have the parent in 'idx' and now we set up for reading the
++ * child pointed to by slot 'iip'.
++ */
++ last_level = le16_to_cpu(idx->level);
++ last_sqnum = le64_to_cpu(idx->ch.sqnum);
++ br = ubifs_idx_branch(c, idx, iip);
++ lnum = le32_to_cpu(br->lnum);
++ offs = le32_to_cpu(br->offs);
++ len = le32_to_cpu(br->len);
++ key_read(c, &br->key, &lower_key);
++ if (iip + 1 < le16_to_cpu(idx->child_cnt)) {
++ br = ubifs_idx_branch(c, idx, iip + 1);
++ key_read(c, &br->key, &upper_key);
++ } else
++ key_copy(c, &i->upper_key, &upper_key);
++ }
++out:
++ err = dbg_old_index_check_init(c, zroot);
++ if (err)
++ goto out_free;
++
++ return 0;
++
++out_dump:
++ dbg_err("dumping index node (iip=%d)", i->iip);
++ dbg_dump_node(c, idx);
++ list_del(&i->list);
++ kfree(i);
++ if (!list_empty(&list)) {
++ i = list_entry(list.prev, struct idx_node, list);
++ dbg_err("dumping parent index node");
++ dbg_dump_node(c, &i->idx);
++ }
++out_free:
++ while (!list_empty(&list)) {
++ i = list_entry(list.next, struct idx_node, list);
++ list_del(&i->list);
++ kfree(i);
++ }
++ ubifs_err("failed, error %d", err);
++ if (err > 0)
++ err = -EINVAL;
++ return err;
++}
++
++#endif /* CONFIG_UBIFS_FS_DEBUG */
+diff --exclude=.git -urN linux-2.6.25.6/fs/ubifs/compress.c avr32-2.6/fs/ubifs/compress.c
+--- linux-2.6.25.6/fs/ubifs/compress.c 1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/fs/ubifs/compress.c 2008-06-12 15:09:45.315815846 +0200
+@@ -0,0 +1,253 @@
++/*
++ * This file is part of UBIFS.
++ *
++ * Copyright (C) 2006-2008 Nokia Corporation.
++ * Copyright (C) 2006, 2007 University of Szeged, Hungary
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published by
++ * the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but WITHOUT
++ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
++ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
++ * more details.
++ *
++ * You should have received a copy of the GNU General Public License along with
++ * this program; if not, write to the Free Software Foundation, Inc., 51
++ * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
++ *
++ * Authors: Adrian Hunter
++ * Artem Bityutskiy (Битюцкий Артём)
++ * Zoltan Sogor
++ */
++
++/*
++ * This file provides a single place to access to compression and
++ * decompression.
++ */
++
++#include <linux/crypto.h>
++#include "ubifs.h"
++
++/* Fake description object for the "none" compressor */
++static struct ubifs_compressor none_compr = {
++ .compr_type = UBIFS_COMPR_NONE,
++ .name = "no compression",
++ .capi_name = "",
++};
++
++#ifdef CONFIG_UBIFS_FS_LZO
++static DEFINE_MUTEX(lzo_mutex);
++
++static struct ubifs_compressor lzo_compr = {
++ .compr_type = UBIFS_COMPR_LZO,
++ .comp_mutex = &lzo_mutex,
++ .name = "LZO",
++ .capi_name = "lzo",
++};
++#else
++static struct ubifs_compressor lzo_compr = {
++ .compr_type = UBIFS_COMPR_LZO,
++ .name = "LZO",
++};
++#endif
++
++#ifdef CONFIG_UBIFS_FS_ZLIB
++static DEFINE_MUTEX(deflate_mutex);
++static DEFINE_MUTEX(inflate_mutex);
++
++static struct ubifs_compressor zlib_compr = {
++ .compr_type = UBIFS_COMPR_ZLIB,
++ .comp_mutex = &deflate_mutex,
++ .decomp_mutex = &inflate_mutex,
++ .name = "zlib",
++ .capi_name = "deflate",
++};
++#else
++static struct ubifs_compressor zlib_compr = {
++ .compr_type = UBIFS_COMPR_ZLIB,
++ .name = "zlib",
++};
++#endif
++
++/* All UBIFS compressors */
++struct ubifs_compressor *ubifs_compressors[UBIFS_COMPR_TYPES_CNT];
++
++/**
++ * ubifs_compress - compress data.
++ * @in_buf: data to compress
++ * @in_len: length of the data to compress
++ * @out_buf: output buffer where compressed data should be stored
++ * @out_len: output buffer length is returned here
++ * @compr_type: type of compression to use on enter, actually used compression
++ * type on exit
++ *
++ * This function compresses input buffer @in_buf of length @in_len and stores
++ * the result in the output buffer @out_buf and the resulting length in
++ * @out_len. If the input buffer does not compress, it is just copied to the
++ * @out_buf. The same happens if @compr_type is %UBIFS_COMPR_NONE or if
++ * compression error occurred.
++ *
++ * Note, if the input buffer was not compressed, it is copied to the output
++ * buffer and %UBIFS_COMPR_NONE is returned in @compr_type.
++ *
++ * This functions returns %0 on success or a negative error code on failure.
++ */
++void ubifs_compress(const void *in_buf, int in_len, void *out_buf, int *out_len,
++ int *compr_type)
++{
++ int err;
++ struct ubifs_compressor *compr = ubifs_compressors[*compr_type];
++
++ if (*compr_type == UBIFS_COMPR_NONE)
++ goto no_compr;
++
++ /* If the input data is small, do not even try to compress it */
++ if (in_len < UBIFS_MIN_COMPR_LEN)
++ goto no_compr;
++
++ if (compr->comp_mutex)
++ mutex_lock(compr->comp_mutex);
++ err = crypto_comp_compress(compr->cc, in_buf, in_len, out_buf,
++ out_len);
++ if (compr->comp_mutex)
++ mutex_unlock(compr->comp_mutex);
++ if (unlikely(err)) {
++ ubifs_warn("cannot compress %d bytes, compressor %s, "
++ "error %d, leave data uncompressed",
++ in_len, compr->name, err);
++ goto no_compr;
++ }
++
++ /*
++ * Presently, we just require that compression results in less data,
++ * rather than any defined minimum compression ratio or amount.
++ */
++ if (ALIGN(*out_len, 8) >= ALIGN(in_len, 8))
++ goto no_compr;
++
++ return;
++
++no_compr:
++ memcpy(out_buf, in_buf, in_len);
++ *out_len = in_len;
++ *compr_type = UBIFS_COMPR_NONE;
++}
++
++/**
++ * ubifs_decompress - decompress data.
++ * @in_buf: data to decompress
++ * @in_len: length of the data to decompress
++ * @out_buf: output buffer where decompressed data should
++ * @out_len: output length is returned here
++ * @compr_type: type of compression
++ *
++ * This function decompresses data from buffer @in_buf into buffer @out_buf.
++ * The length of the uncompressed data is returned in @out_len. This functions
++ * returns %0 on success or a negative error code on failure.
++ */
++int ubifs_decompress(const void *in_buf, int in_len, void *out_buf,
++ int *out_len, int compr_type)
++{
++ int err;
++ struct ubifs_compressor *compr;
++
++ if (unlikely(compr_type < 0 || compr_type >= UBIFS_COMPR_TYPES_CNT)) {
++ ubifs_err("invalid compression type %d", compr_type);
++ return -EINVAL;
++ }
++
++ compr = ubifs_compressors[compr_type];
++
++ if (unlikely(!compr->capi_name)) {
++ ubifs_err("%s compression is not compiled in", compr->name);
++ return -EINVAL;
++ }
++
++ if (compr_type == UBIFS_COMPR_NONE) {
++ memcpy(out_buf, in_buf, in_len);
++ *out_len = in_len;
++ return 0;
++ }
++
++ if (compr->decomp_mutex)
++ mutex_lock(compr->decomp_mutex);
++ err = crypto_comp_decompress(compr->cc, in_buf, in_len, out_buf,
++ out_len);
++ if (compr->decomp_mutex)
++ mutex_unlock(compr->decomp_mutex);
++ if (err)
++ ubifs_err("cannot decompress %d bytes, compressor %s, "
++ "error %d", in_len, compr->name, err);
++
++ return err;
++}
++
++/**
++ * compr_init - initialize a compressor.
++ * @compr: compressor description object
++ *
++ * This function initializes the requested compressor and returns zero in case
++ * of success or a negative error code in case of failure.
++ */
++static int __init compr_init(struct ubifs_compressor *compr)
++{
++ if (compr->capi_name) {
++ compr->cc = crypto_alloc_comp(compr->capi_name, 0, 0);
++ if (IS_ERR(compr->cc)) {
++ ubifs_err("cannot initialize compressor %s, error %ld",
++ compr->name, PTR_ERR(compr->cc));
++ return PTR_ERR(compr->cc);
++ }
++ }
++
++ ubifs_compressors[compr->compr_type] = compr;
++ return 0;
++}
++
++/**
++ * compr_exit - de-initialize a compressor.
++ * @compr: compressor description object
++ */
++static void compr_exit(struct ubifs_compressor *compr)
++{
++ if (compr->capi_name)
++ crypto_free_comp(compr->cc);
++ return;
++}
++
++/**
++ * ubifs_compressors_init - initialize UBIFS compressors.
++ *
++ * This function initializes the compressor which were compiled in. Returns
++ * zero in case of success and a negative error code in case of failure.
++ */
++int __init ubifs_compressors_init(void)
++{
++ int err;
++
++ err = compr_init(&lzo_compr);
++ if (err)
++ return err;
++
++ err = compr_init(&zlib_compr);
++ if (err)
++ goto out_lzo;
++
++ ubifs_compressors[UBIFS_COMPR_NONE] = &none_compr;
++ return 0;
++
++out_lzo:
++ compr_exit(&lzo_compr);
++ return err;
++}
++
++/**
++ * ubifs_compressors_exit - de-initialize UBIFS compressors.
++ */
++void __exit ubifs_compressors_exit(void)
++{
++ compr_exit(&lzo_compr);
++ compr_exit(&zlib_compr);
++}
+diff --exclude=.git -urN linux-2.6.25.6/fs/ubifs/debug.c avr32-2.6/fs/ubifs/debug.c
+--- linux-2.6.25.6/fs/ubifs/debug.c 1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/fs/ubifs/debug.c 2008-06-12 15:09:45.315815846 +0200
+@@ -0,0 +1,2210 @@
++/*
++ * This file is part of UBIFS.
++ *
++ * Copyright (C) 2006-2008 Nokia Corporation
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published by
++ * the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but WITHOUT
++ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
++ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
++ * more details.
++ *
++ * You should have received a copy of the GNU General Public License along with
++ * this program; if not, write to the Free Software Foundation, Inc., 51
++ * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
++ *
++ * Authors: Artem Bityutskiy (Битюцкий Артём)
++ * Adrian Hunter
++ */
++
++/*
++ * This file implements most of the debugging stuff which is compiled in only
++ * when it is enabled. But some debugging check functions are implemented in
++ * corresponding subsystem, just because they are closely related and utilize
++ * various local functions of those subsystems.
++ */
++
++#define UBIFS_DBG_PRESERVE_UBI
++
++#include "ubifs.h"
++#include <linux/module.h>
++#include <linux/moduleparam.h>
++
++#ifdef CONFIG_UBIFS_FS_DEBUG
++
++DEFINE_SPINLOCK(dbg_lock);
++
++static char dbg_key_buf0[128];
++static char dbg_key_buf1[128];
++
++unsigned int ubifs_msg_flags = UBIFS_MSG_FLAGS_DEFAULT;
++unsigned int ubifs_chk_flags = UBIFS_CHK_FLAGS_DEFAULT;
++unsigned int ubifs_tst_flags;
++
++module_param_named(debug_msgs, ubifs_msg_flags, uint, S_IRUGO | S_IWUSR);
++module_param_named(debug_chks, ubifs_chk_flags, uint, S_IRUGO | S_IWUSR);
++module_param_named(debug_tsts, ubifs_tst_flags, uint, S_IRUGO | S_IWUSR);
++
++MODULE_PARM_DESC(debug_msgs, "Debug message type flags");
++MODULE_PARM_DESC(debug_chks, "Debug check flags");
++MODULE_PARM_DESC(debug_tsts, "Debug special test flags");
++
++static const char *get_key_fmt(int fmt)
++{
++ switch (fmt) {
++ case UBIFS_SIMPLE_KEY_FMT:
++ return "simple";
++ default:
++ return "unknown/invalid format";
++ }
++}
++
++static const char *get_key_hash(int hash)
++{
++ switch (hash) {
++ case UBIFS_KEY_HASH_R5:
++ return "R5";
++ case UBIFS_KEY_HASH_TEST:
++ return "test";
++ default:
++ return "unknown/invalid name hash";
++ }
++}
++
++static const char *get_key_type(int type)
++{
++ switch (type) {
++ case UBIFS_INO_KEY:
++ return "inode";
++ case UBIFS_DENT_KEY:
++ return "direntry";
++ case UBIFS_XENT_KEY:
++ return "xentry";
++ case UBIFS_DATA_KEY:
++ return "data";
++ case UBIFS_TRUN_KEY:
++ return "truncate";
++ default:
++ return "unknown/invalid key";
++ }
++}
++
++static void sprintf_key(const struct ubifs_info *c, const union ubifs_key *key,
++ char *buffer)
++{
++ char *p = buffer;
++ int type = key_type(c, key);
++
++ if (c->key_fmt == UBIFS_SIMPLE_KEY_FMT) {
++ switch (type) {
++ case UBIFS_INO_KEY:
++ sprintf(p, "(%lu, %s)", key_inum(c, key),
++ get_key_type(type));
++ break;
++ case UBIFS_DENT_KEY:
++ case UBIFS_XENT_KEY:
++ sprintf(p, "(%lu, %s, %#08x)", key_inum(c, key),
++ get_key_type(type), key_hash(c, key));
++ break;
++ case UBIFS_DATA_KEY:
++ sprintf(p, "(%lu, %s, %u)", key_inum(c, key),
++ get_key_type(type), key_block(c, key));
++ break;
++ case UBIFS_TRUN_KEY:
++ sprintf(p, "(%lu, %s)",
++ key_inum(c, key), get_key_type(type));
++ break;
++ default:
++ sprintf(p, "(bad key type: %#08x, %#08x)",
++ key->u32[0], key->u32[1]);
++ }
++ } else
++ sprintf(p, "bad key format %d", c->key_fmt);
++}
++
++const char *dbg_key_str0(const struct ubifs_info *c, const union ubifs_key *key)
++{
++ /* dbg_lock must be held */
++ sprintf_key(c, key, dbg_key_buf0);
++ return dbg_key_buf0;
++}
++
++const char *dbg_key_str1(const struct ubifs_info *c, const union ubifs_key *key)
++{
++ /* dbg_lock must be held */
++ sprintf_key(c, key, dbg_key_buf1);
++ return dbg_key_buf1;
++}
++
++const char *dbg_ntype(int type)
++{
++ switch (type) {
++ case UBIFS_PAD_NODE:
++ return "padding node";
++ case UBIFS_SB_NODE:
++ return "superblock node";
++ case UBIFS_MST_NODE:
++ return "master node";
++ case UBIFS_REF_NODE:
++ return "reference node";
++ case UBIFS_INO_NODE:
++ return "inode node";
++ case UBIFS_DENT_NODE:
++ return "direntry node";
++ case UBIFS_XENT_NODE:
++ return "xentry node";
++ case UBIFS_DATA_NODE:
++ return "data node";
++ case UBIFS_TRUN_NODE:
++ return "truncate node";
++ case UBIFS_IDX_NODE:
++ return "indexing node";
++ case UBIFS_CS_NODE:
++ return "commit start node";
++ case UBIFS_ORPH_NODE:
++ return "orphan node";
++ default:
++ return "unknown node";
++ }
++}
++
++static const char *dbg_gtype(int type)
++{
++ switch (type) {
++ case UBIFS_NO_NODE_GROUP:
++ return "no node group";
++ case UBIFS_IN_NODE_GROUP:
++ return "in node group";
++ case UBIFS_LAST_OF_NODE_GROUP:
++ return "last of node group";
++ default:
++ return "unknown";
++ }
++}
++
++const char *dbg_cstate(int cmt_state)
++{
++ switch (cmt_state) {
++ case COMMIT_RESTING:
++ return "commit resting";
++ case COMMIT_BACKGROUND:
++ return "background commit requested";
++ case COMMIT_REQUIRED:
++ return "commit required";
++ case COMMIT_RUNNING_BACKGROUND:
++ return "BACKGROUND commit running";
++ case COMMIT_RUNNING_REQUIRED:
++ return "commit running and required";
++ case COMMIT_BROKEN:
++ return "broken commit";
++ default:
++ return "unknown commit state";
++ }
++}
++
++static void dump_ch(const struct ubifs_ch *ch)
++{
++ printk(KERN_DEBUG "\tmagic %#x\n", le32_to_cpu(ch->magic));
++ printk(KERN_DEBUG "\tcrc %#x\n", le32_to_cpu(ch->crc));
++ printk(KERN_DEBUG "\tnode_type %d (%s)\n", ch->node_type,
++ dbg_ntype(ch->node_type));
++ printk(KERN_DEBUG "\tgroup_type %d (%s)\n", ch->group_type,
++ dbg_gtype(ch->group_type));
++ printk(KERN_DEBUG "\tsqnum %llu\n",
++ (unsigned long long)le64_to_cpu(ch->sqnum));
++ printk(KERN_DEBUG "\tlen %u\n", le32_to_cpu(ch->len));
++}
++
++void dbg_dump_inode(const struct ubifs_info *c, const struct inode *inode)
++{
++ const struct ubifs_inode *ui = ubifs_inode(inode);
++
++ printk(KERN_DEBUG "inode %lu\n", inode->i_ino);
++ printk(KERN_DEBUG "size %llu\n",
++ (unsigned long long)i_size_read(inode));
++ printk(KERN_DEBUG "nlink %u\n", inode->i_nlink);
++ printk(KERN_DEBUG "uid %u\n", (unsigned int)inode->i_uid);
++ printk(KERN_DEBUG "gid %u\n", (unsigned int)inode->i_gid);
++ printk(KERN_DEBUG "atime %u.%u\n",
++ (unsigned int)inode->i_atime.tv_sec,
++ (unsigned int)inode->i_atime.tv_nsec);
++ printk(KERN_DEBUG "mtime %u.%u\n",
++ (unsigned int)inode->i_mtime.tv_sec,
++ (unsigned int)inode->i_mtime.tv_nsec);
++ printk(KERN_DEBUG "ctime %u.%u\n",
++ (unsigned int)inode->i_ctime.tv_sec,
++ (unsigned int)inode->i_ctime.tv_nsec);
++ printk(KERN_DEBUG "creat_sqnum %llu\n", ui->creat_sqnum);
++ printk(KERN_DEBUG "xattr_size %lld\n", ui->xattr_size);
++ printk(KERN_DEBUG "xattr_cnt %d\n", ui->xattr_cnt);
++ printk(KERN_DEBUG "xattr_names %d\n", ui->xattr_names);
++ printk(KERN_DEBUG "dirty %u\n", ui->dirty);
++ printk(KERN_DEBUG "xattr %u\n", ui->xattr);
++ printk(KERN_DEBUG "flags %d\n", ui->flags);
++ printk(KERN_DEBUG "compr_type %d\n", ui->compr_type);
++ printk(KERN_DEBUG "data_len %d\n", ui->data_len);
++}
++
++void dbg_dump_node(const struct ubifs_info *c, const void *node)
++{
++ int i, n;
++ union ubifs_key key;
++ const struct ubifs_ch *ch = node;
++
++ if (dbg_failure_mode)
++ return;
++
++ /* If the magic is incorrect, just hexdump the first bytes */
++ if (le32_to_cpu(ch->magic) != UBIFS_NODE_MAGIC) {
++ printk(KERN_DEBUG "Not a node, first %zu bytes:", UBIFS_CH_SZ);
++ print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, 32, 1,
++ (void *)node, UBIFS_CH_SZ, 1);
++ return;
++ }
++
++ spin_lock(&dbg_lock);
++ dump_ch(node);
++
++ switch (ch->node_type) {
++ case UBIFS_PAD_NODE:
++ {
++ const struct ubifs_pad_node *pad = node;
++
++ printk(KERN_DEBUG "\tpad_len %u\n",
++ le32_to_cpu(pad->pad_len));
++ break;
++ }
++ case UBIFS_SB_NODE:
++ {
++ const struct ubifs_sb_node *sup = node;
++ unsigned int sup_flags = le32_to_cpu(sup->flags);
++
++ printk(KERN_DEBUG "\tkey_hash %d (%s)\n",
++ (int)sup->key_hash, get_key_hash(sup->key_hash));
++ printk(KERN_DEBUG "\tkey_fmt %d (%s)\n",
++ (int)sup->key_fmt, get_key_fmt(sup->key_fmt));
++ printk(KERN_DEBUG "\tflags %#x\n", sup_flags);
++ printk(KERN_DEBUG "\t big_lpt %u\n",
++ !!(sup_flags & UBIFS_FLG_BIGLPT));
++ printk(KERN_DEBUG "\tmin_io_size %u\n",
++ le32_to_cpu(sup->min_io_size));
++ printk(KERN_DEBUG "\tleb_size %u\n",
++ le32_to_cpu(sup->leb_size));
++ printk(KERN_DEBUG "\tleb_cnt %u\n",
++ le32_to_cpu(sup->leb_cnt));
++ printk(KERN_DEBUG "\tmax_leb_cnt %u\n",
++ le32_to_cpu(sup->max_leb_cnt));
++ printk(KERN_DEBUG "\tmax_bud_bytes %llu\n",
++ (unsigned long long)le64_to_cpu(sup->max_bud_bytes));
++ printk(KERN_DEBUG "\tlog_lebs %u\n",
++ le32_to_cpu(sup->log_lebs));
++ printk(KERN_DEBUG "\tlpt_lebs %u\n",
++ le32_to_cpu(sup->lpt_lebs));
++ printk(KERN_DEBUG "\torph_lebs %u\n",
++ le32_to_cpu(sup->orph_lebs));
++ printk(KERN_DEBUG "\tjhead_cnt %u\n",
++ le32_to_cpu(sup->jhead_cnt));
++ printk(KERN_DEBUG "\tfanout %u\n",
++ le32_to_cpu(sup->fanout));
++ printk(KERN_DEBUG "\tlsave_cnt %u\n",
++ le32_to_cpu(sup->lsave_cnt));
++ printk(KERN_DEBUG "\tdefault_compr %u\n",
++ (int)le16_to_cpu(sup->default_compr));
++ printk(KERN_DEBUG "\trp_size %llu\n",
++ (unsigned long long)le64_to_cpu(sup->rp_size));
++ printk(KERN_DEBUG "\trp_uid %u\n",
++ le32_to_cpu(sup->rp_uid));
++ printk(KERN_DEBUG "\trp_gid %u\n",
++ le32_to_cpu(sup->rp_gid));
++ printk(KERN_DEBUG "\tfmt_version %u\n",
++ le32_to_cpu(sup->fmt_version));
++ printk(KERN_DEBUG "\ttime_gran %u\n",
++ le32_to_cpu(sup->time_gran));
++ printk(KERN_DEBUG "\tUUID %02X%02X%02X%02X-%02X%02X"
++ "-%02X%02X-%02X%02X-%02X%02X%02X%02X%02X%02X\n",
++ sup->uuid[0], sup->uuid[1], sup->uuid[2], sup->uuid[3],
++ sup->uuid[4], sup->uuid[5], sup->uuid[6], sup->uuid[7],
++ sup->uuid[8], sup->uuid[9], sup->uuid[10], sup->uuid[11],
++ sup->uuid[12], sup->uuid[13], sup->uuid[14],
++ sup->uuid[15]);
++ break;
++ }
++ case UBIFS_MST_NODE:
++ {
++ const struct ubifs_mst_node *mst = node;
++
++ printk(KERN_DEBUG "\thighest_inum %llu\n",
++ (unsigned long long)le64_to_cpu(mst->highest_inum));
++ printk(KERN_DEBUG "\tcommit number %llu\n",
++ (unsigned long long)le64_to_cpu(mst->cmt_no));
++ printk(KERN_DEBUG "\tflags %#x\n",
++ le32_to_cpu(mst->flags));
++ printk(KERN_DEBUG "\tlog_lnum %u\n",
++ le32_to_cpu(mst->log_lnum));
++ printk(KERN_DEBUG "\troot_lnum %u\n",
++ le32_to_cpu(mst->root_lnum));
++ printk(KERN_DEBUG "\troot_offs %u\n",
++ le32_to_cpu(mst->root_offs));
++ printk(KERN_DEBUG "\troot_len %u\n",
++ le32_to_cpu(mst->root_len));
++ printk(KERN_DEBUG "\tgc_lnum %u\n",
++ le32_to_cpu(mst->gc_lnum));
++ printk(KERN_DEBUG "\tihead_lnum %u\n",
++ le32_to_cpu(mst->ihead_lnum));
++ printk(KERN_DEBUG "\tihead_offs %u\n",
++ le32_to_cpu(mst->ihead_offs));
++ printk(KERN_DEBUG "\tindex_size %u\n",
++ le32_to_cpu(mst->index_size));
++ printk(KERN_DEBUG "\tlpt_lnum %u\n",
++ le32_to_cpu(mst->lpt_lnum));
++ printk(KERN_DEBUG "\tlpt_offs %u\n",
++ le32_to_cpu(mst->lpt_offs));
++ printk(KERN_DEBUG "\tnhead_lnum %u\n",
++ le32_to_cpu(mst->nhead_lnum));
++ printk(KERN_DEBUG "\tnhead_offs %u\n",
++ le32_to_cpu(mst->nhead_offs));
++ printk(KERN_DEBUG "\tltab_lnum %u\n",
++ le32_to_cpu(mst->ltab_lnum));
++ printk(KERN_DEBUG "\tltab_offs %u\n",
++ le32_to_cpu(mst->ltab_offs));
++ printk(KERN_DEBUG "\tlsave_lnum %u\n",
++ le32_to_cpu(mst->lsave_lnum));
++ printk(KERN_DEBUG "\tlsave_offs %u\n",
++ le32_to_cpu(mst->lsave_offs));
++ printk(KERN_DEBUG "\tlscan_lnum %u\n",
++ le32_to_cpu(mst->lscan_lnum));
++ printk(KERN_DEBUG "\tleb_cnt %u\n",
++ le32_to_cpu(mst->leb_cnt));
++ printk(KERN_DEBUG "\tempty_lebs %u\n",
++ le32_to_cpu(mst->empty_lebs));
++ printk(KERN_DEBUG "\tidx_lebs %u\n",
++ le32_to_cpu(mst->idx_lebs));
++ printk(KERN_DEBUG "\ttotal_free %llu\n",
++ (unsigned long long)le64_to_cpu(mst->total_free));
++ printk(KERN_DEBUG "\ttotal_dirty %llu\n",
++ (unsigned long long)le64_to_cpu(mst->total_dirty));
++ printk(KERN_DEBUG "\ttotal_used %llu\n",
++ (unsigned long long)le64_to_cpu(mst->total_used));
++ printk(KERN_DEBUG "\ttotal_dead %llu\n",
++ (unsigned long long)le64_to_cpu(mst->total_dead));
++ printk(KERN_DEBUG "\ttotal_dark %llu\n",
++ (unsigned long long)le64_to_cpu(mst->total_dark));
++ break;
++ }
++ case UBIFS_REF_NODE:
++ {
++ const struct ubifs_ref_node *ref = node;
++
++ printk(KERN_DEBUG "\tlnum %u\n",
++ le32_to_cpu(ref->lnum));
++ printk(KERN_DEBUG "\toffs %u\n",
++ le32_to_cpu(ref->offs));
++ printk(KERN_DEBUG "\tjhead %u\n",
++ le32_to_cpu(ref->jhead));
++ break;
++ }
++ case UBIFS_INO_NODE:
++ {
++ const struct ubifs_ino_node *ino = node;
++
++ key_read(c, &ino->key, &key);
++ printk(KERN_DEBUG "\tkey %s\n", DBGKEY(&key));
++ printk(KERN_DEBUG "\tcreat_sqnum %llu\n",
++ (unsigned long long)le64_to_cpu(ino->creat_sqnum));
++ printk(KERN_DEBUG "\tsize %llu\n",
++ (unsigned long long)le64_to_cpu(ino->size));
++ printk(KERN_DEBUG "\tnlink %u\n",
++ le32_to_cpu(ino->nlink));
++ printk(KERN_DEBUG "\tatime %lld.%u\n",
++ (long long)le64_to_cpu(ino->atime_sec),
++ le32_to_cpu(ino->atime_nsec));
++ printk(KERN_DEBUG "\tmtime %lld.%u\n",
++ (long long)le64_to_cpu(ino->mtime_sec),
++ le32_to_cpu(ino->mtime_nsec));
++ printk(KERN_DEBUG "\tctime %lld.%u\n",
++ (long long)le64_to_cpu(ino->ctime_sec),
++ le32_to_cpu(ino->ctime_nsec));
++ printk(KERN_DEBUG "\tuid %u\n",
++ le32_to_cpu(ino->uid));
++ printk(KERN_DEBUG "\tgid %u\n",
++ le32_to_cpu(ino->gid));
++ printk(KERN_DEBUG "\tmode %u\n",
++ le32_to_cpu(ino->mode));
++ printk(KERN_DEBUG "\tflags %#x\n",
++ le32_to_cpu(ino->flags));
++ printk(KERN_DEBUG "\txattr_cnt %u\n",
++ le32_to_cpu(ino->xattr_cnt));
++ printk(KERN_DEBUG "\txattr_size %llu\n",
++ (unsigned long long)le64_to_cpu(ino->xattr_size));
++ printk(KERN_DEBUG "\txattr_names %u\n",
++ le32_to_cpu(ino->xattr_names));
++ printk(KERN_DEBUG "\tcompr_type %#x\n",
++ (int)le16_to_cpu(ino->compr_type));
++ printk(KERN_DEBUG "\tdata len %u\n",
++ le32_to_cpu(ino->data_len));
++ break;
++ }
++ case UBIFS_DENT_NODE:
++ case UBIFS_XENT_NODE:
++ {
++ const struct ubifs_dent_node *dent = node;
++ int nlen = le16_to_cpu(dent->nlen);
++
++ key_read(c, &dent->key, &key);
++ printk(KERN_DEBUG "\tkey %s\n", DBGKEY(&key));
++ printk(KERN_DEBUG "\tinum %llu\n",
++ (unsigned long long)le64_to_cpu(dent->inum));
++ printk(KERN_DEBUG "\ttype %d\n", (int)dent->type);
++ printk(KERN_DEBUG "\tnlen %d\n", nlen);
++ printk(KERN_DEBUG "\tname ");
++
++ if (nlen > UBIFS_MAX_NLEN)
++ printk(KERN_DEBUG "(bad name length, not printing, "
++ "bad or corrupted node)");
++ else {
++ for (i = 0; i < nlen && dent->name[i]; i++)
++ printk("%c", dent->name[i]);
++ }
++ printk("\n");
++
++ break;
++ }
++ case UBIFS_DATA_NODE:
++ {
++ const struct ubifs_data_node *dn = node;
++ int dlen = le32_to_cpu(ch->len) - UBIFS_DATA_NODE_SZ;
++
++ key_read(c, &dn->key, &key);
++ printk(KERN_DEBUG "\tkey %s\n", DBGKEY(&key));
++ printk(KERN_DEBUG "\tsize %u\n",
++ le32_to_cpu(dn->size));
++ printk(KERN_DEBUG "\tcompr_typ %d\n",
++ (int)le16_to_cpu(dn->compr_type));
++ printk(KERN_DEBUG "\tdata size %d\n",
++ dlen);
++ printk(KERN_DEBUG "\tdata:\n");
++ print_hex_dump(KERN_DEBUG, "\t", DUMP_PREFIX_OFFSET, 32, 1,
++ (void *)&dn->data, dlen, 0);
++ break;
++ }
++ case UBIFS_TRUN_NODE:
++ {
++ const struct ubifs_trun_node *trun = node;
++
++ printk(KERN_DEBUG "\tinum %u\n",
++ le32_to_cpu(trun->inum));
++ printk(KERN_DEBUG "\told_size %llu\n",
++ (unsigned long long)le64_to_cpu(trun->old_size));
++ printk(KERN_DEBUG "\tnew_size %llu\n",
++ (unsigned long long)le64_to_cpu(trun->new_size));
++ break;
++ }
++ case UBIFS_IDX_NODE:
++ {
++ const struct ubifs_idx_node *idx = node;
++
++ n = le16_to_cpu(idx->child_cnt);
++ printk(KERN_DEBUG "\tchild_cnt %d\n", n);
++ printk(KERN_DEBUG "\tlevel %d\n",
++ (int)le16_to_cpu(idx->level));
++ printk(KERN_DEBUG "\tBranches:\n");
++
++ for (i = 0; i < n && i < c->fanout - 1; i++) {
++ const struct ubifs_branch *br;
++
++ br = ubifs_idx_branch(c, idx, i);
++ key_read(c, &br->key, &key);
++ printk(KERN_DEBUG "\t%d: LEB %d:%d len %d key %s\n",
++ i, le32_to_cpu(br->lnum), le32_to_cpu(br->offs),
++ le32_to_cpu(br->len), DBGKEY(&key));
++ }
++ break;
++ }
++ case UBIFS_CS_NODE:
++ break;
++ case UBIFS_ORPH_NODE:
++ {
++ const struct ubifs_orph_node *orph = node;
++
++ printk(KERN_DEBUG "\tcommit number %llu\n",
++ (unsigned long long)
++ le64_to_cpu(orph->cmt_no) & LLONG_MAX);
++ printk(KERN_DEBUG "\tlast node flag %llu\n",
++ (unsigned long long)(le64_to_cpu(orph->cmt_no)) >> 63);
++ n = (le32_to_cpu(ch->len) - UBIFS_ORPH_NODE_SZ) >> 3;
++ printk(KERN_DEBUG "\t%d orphan inode numbers:\n", n);
++ for (i = 0; i < n; i++)
++ printk(KERN_DEBUG "\t ino %llu\n",
++ le64_to_cpu(orph->inos[i]));
++ break;
++ }
++ default:
++ printk(KERN_DEBUG "node type %d was not recognized\n",
++ (int)ch->node_type);
++ }
++ spin_unlock(&dbg_lock);
++}
++
++void dbg_dump_budget_req(const struct ubifs_budget_req *req)
++{
++ spin_lock(&dbg_lock);
++ printk(KERN_DEBUG "Budgeting request: new_ino %d, dirtied_ino %d\n",
++ req->new_ino, req->dirtied_ino);
++ printk(KERN_DEBUG "\tnew_ino_d %d, dirtied_ino_d %d\n",
++ req->new_ino_d, req->dirtied_ino_d);
++ printk(KERN_DEBUG "\tnew_page %d, dirtied_page %d\n",
++ req->new_page, req->dirtied_page);
++ printk(KERN_DEBUG "\tnew_dent %d, mod_dent %d\n",
++ req->new_dent, req->mod_dent);
++ printk(KERN_DEBUG "\tidx_growth %d\n", req->idx_growth);
++ printk(KERN_DEBUG "\tdata_growth %d dd_growth %d\n",
++ req->data_growth, req->dd_growth);
++ spin_unlock(&dbg_lock);
++}
++
++void dbg_dump_lstats(const struct ubifs_lp_stats *lst)
++{
++ spin_lock(&dbg_lock);
++ printk(KERN_DEBUG "Lprops statistics: empty_lebs %d, idx_lebs %d\n",
++ lst->empty_lebs, lst->idx_lebs);
++ printk(KERN_DEBUG "\ttaken_empty_lebs %d, total_free %lld, "
++ "total_dirty %lld\n", lst->taken_empty_lebs, lst->total_free,
++ lst->total_dirty);
++ printk(KERN_DEBUG "\ttotal_used %lld, total_dark %lld, "
++ "total_dead %lld\n", lst->total_used, lst->total_dark,
++ lst->total_dead);
++ spin_unlock(&dbg_lock);
++}
++
++void dbg_dump_budg(struct ubifs_info *c)
++{
++ int i;
++ struct rb_node *rb;
++ struct ubifs_bud *bud;
++ struct ubifs_gced_idx_leb *idx_gc;
++
++ spin_lock(&dbg_lock);
++ printk(KERN_DEBUG "Budgeting info: budg_data_growth %lld, "
++ "budg_dd_growth %lld, budg_idx_growth %lld\n",
++ c->budg_data_growth, c->budg_dd_growth, c->budg_idx_growth);
++ printk(KERN_DEBUG "\tdata budget sum %lld, total budget sum %lld, "
++ "freeable_cnt %d\n", c->budg_data_growth + c->budg_dd_growth,
++ c->budg_data_growth + c->budg_dd_growth + c->budg_idx_growth,
++ c->freeable_cnt);
++ printk(KERN_DEBUG "\tmin_idx_lebs %d, old_idx_sz %lld, "
++ "calc_idx_sz %lld, idx_gc_cnt %d\n", c->min_idx_lebs,
++ c->old_idx_sz, c->calc_idx_sz, c->idx_gc_cnt);
++ printk(KERN_DEBUG "\tdirty_pg_cnt %ld, dirty_ino_cnt %ld, "
++ "dirty_zn_cnt %ld, clean_zn_cnt %ld\n",
++ atomic_long_read(&c->dirty_pg_cnt),
++ atomic_long_read(&c->dirty_ino_cnt),
++ atomic_long_read(&c->dirty_zn_cnt),
++ atomic_long_read(&c->clean_zn_cnt));
++ printk(KERN_DEBUG "\tdark_wm %d, dead_wm %d, max_idx_node_sz %d\n",
++ c->dark_wm, c->dead_wm, c->max_idx_node_sz);
++ printk(KERN_DEBUG "\tgc_lnum %d, ihead_lnum %d\n",
++ c->gc_lnum, c->ihead_lnum);
++ for (i = 0; i < c->jhead_cnt; i++)
++ printk(KERN_DEBUG "\tjhead %d\t LEB %d\n",
++ c->jheads[i].wbuf.jhead, c->jheads[i].wbuf.lnum);
++ for (rb = rb_first(&c->buds); rb; rb = rb_next(rb)) {
++ bud = rb_entry(rb, struct ubifs_bud, rb);
++ printk(KERN_DEBUG "\tbud LEB %d\n", bud->lnum);
++ }
++ list_for_each_entry(bud, &c->old_buds, list)
++ printk(KERN_DEBUG "\told bud LEB %d\n", bud->lnum);
++ list_for_each_entry(idx_gc, &c->idx_gc, list)
++ printk(KERN_DEBUG "\tGC'ed idx LEB %d unmap %d\n",
++ idx_gc->lnum, idx_gc->unmap);
++ printk(KERN_DEBUG "\tcommit state %d\n", c->cmt_state);
++ spin_unlock(&dbg_lock);
++}
++
++void dbg_dump_lprop(const struct ubifs_info *c, const struct ubifs_lprops *lp)
++{
++ printk(KERN_DEBUG "LEB %d lprops: free %d, dirty %d (used %d), "
++ "flags %#x\n", lp->lnum, lp->free, lp->dirty,
++ c->leb_size - lp->free - lp->dirty, lp->flags);
++}
++
++void dbg_dump_lprops(struct ubifs_info *c)
++{
++ int lnum, err;
++ struct ubifs_lprops lp;
++ struct ubifs_lp_stats lst;
++
++ printk(KERN_DEBUG "Dumping LEB properties\n");
++ ubifs_get_lp_stats(c, &lst);
++ dbg_dump_lstats(&lst);
++
++ for (lnum = c->main_first; lnum < c->leb_cnt; lnum++) {
++ err = ubifs_read_one_lp(c, lnum, &lp);
++ if (err)
++ ubifs_err("cannot read lprops for LEB %d", lnum);
++
++ dbg_dump_lprop(c, &lp);
++ }
++}
++
++void dbg_dump_leb(const struct ubifs_info *c, int lnum)
++{
++ struct ubifs_scan_leb *sleb;
++ struct ubifs_scan_node *snod;
++
++ if (dbg_failure_mode)
++ return;
++
++ printk(KERN_DEBUG "Dumping LEB %d\n", lnum);
++
++ sleb = ubifs_scan(c, lnum, 0, c->dbg_buf);
++ if (IS_ERR(sleb)) {
++ ubifs_err("scan error %d", (int)PTR_ERR(sleb));
++ return;
++ }
++
++ printk(KERN_DEBUG "LEB %d has %d nodes ending at %d\n", lnum,
++ sleb->nodes_cnt, sleb->endpt);
++
++ list_for_each_entry(snod, &sleb->nodes, list) {
++ cond_resched();
++ printk(KERN_DEBUG "Dumping node at LEB %d:%d len %d\n", lnum,
++ snod->offs, snod->len);
++ dbg_dump_node(c, snod->node);
++ }
++
++ ubifs_scan_destroy(sleb);
++ return;
++}
++
++void dbg_dump_znode(const struct ubifs_info *c,
++ const struct ubifs_znode *znode)
++{
++ int n;
++ const struct ubifs_zbranch *zbr;
++
++ spin_lock(&dbg_lock);
++ if (znode->parent)
++ zbr = &znode->parent->zbranch[znode->iip];
++ else
++ zbr = &c->zroot;
++
++ printk(KERN_DEBUG "znode %p, LEB %d:%d len %d parent %p iip %d level %d"
++ " child_cnt %d flags %lx\n", znode, zbr->lnum, zbr->offs,
++ zbr->len, znode->parent, znode->iip, znode->level,
++ znode->child_cnt, znode->flags);
++
++ if (znode->child_cnt <= 0 || znode->child_cnt > c->fanout) {
++ spin_unlock(&dbg_lock);
++ return;
++ }
++
++ printk(KERN_DEBUG "zbranches:\n");
++ for (n = 0; n < znode->child_cnt; n++) {
++ zbr = &znode->zbranch[n];
++ if (znode->level > 0)
++ printk(KERN_DEBUG "\t%d: znode %p LEB %d:%d len %d key "
++ "%s\n", n, zbr->znode, zbr->lnum,
++ zbr->offs, zbr->len,
++ DBGKEY(&zbr->key));
++ else
++ printk(KERN_DEBUG "\t%d: LNC %p LEB %d:%d len %d key "
++ "%s\n", n, zbr->znode, zbr->lnum,
++ zbr->offs, zbr->len,
++ DBGKEY(&zbr->key));
++ }
++ spin_unlock(&dbg_lock);
++}
++
++void dbg_dump_heap(struct ubifs_info *c, struct ubifs_lpt_heap *heap, int cat)
++{
++ int i;
++
++ printk(KERN_DEBUG "Dumping heap cat %d (%d elements)\n",
++ cat, heap->cnt);
++ for (i = 0; i < heap->cnt; i++) {
++ struct ubifs_lprops *lprops = heap->arr[i];
++
++ printk(KERN_DEBUG "\t%d. LEB %d hpos %d free %d dirty %d "
++ "flags %d\n", i, lprops->lnum, lprops->hpos,
++ lprops->free, lprops->dirty, lprops->flags);
++ }
++}
++
++void dbg_dump_pnode(struct ubifs_info *c, struct ubifs_pnode *pnode,
++ struct ubifs_nnode *parent, int iip)
++{
++ int i;
++
++ printk(KERN_DEBUG "Dumping pnode:\n");
++ printk(KERN_DEBUG "\taddress %zx parent %zx cnext %zx\n",
++ (size_t)pnode, (size_t)parent, (size_t)pnode->cnext);
++ printk(KERN_DEBUG "\tflags %lu iip %d level %d num %d\n",
++ pnode->flags, iip, pnode->level, pnode->num);
++ for (i = 0; i < UBIFS_LPT_FANOUT; i++) {
++ struct ubifs_lprops *lp = &pnode->lprops[i];
++
++ printk(KERN_DEBUG "\t%d: free %d dirty %d flags %d lnum %d\n",
++ i, lp->free, lp->dirty, lp->flags, lp->lnum);
++ }
++}
++
++void dbg_dump_tnc(struct ubifs_info *c)
++{
++ struct ubifs_znode *znode;
++ int level;
++
++ printk(KERN_DEBUG "\n");
++ printk(KERN_DEBUG "Dumping the TNC tree\n");
++ znode = ubifs_tnc_levelorder_next(c->zroot.znode, NULL);
++ level = znode->level;
++ printk(KERN_DEBUG "== Level %d ==\n", level);
++ while (znode) {
++ if (level != znode->level) {
++ level = znode->level;
++ printk(KERN_DEBUG "== Level %d ==\n", level);
++ }
++ dbg_dump_znode(c, znode);
++ znode = ubifs_tnc_levelorder_next(c->zroot.znode, znode);
++ }
++
++ printk(KERN_DEBUG "\n");
++}
++
++static int dump_znode(struct ubifs_info *c, struct ubifs_znode *znode,
++ void *priv)
++{
++ dbg_dump_znode(c, znode);
++ return 0;
++}
++
++/**
++ * dbg_dump_index - dump the on-flash index.
++ * @c: UBIFS file-system description object
++ *
++ * This function dumps whole UBIFS indexing B-tree, unlike 'dbg_dump_tnc()'
++ * which dumps only in-memory znodes and does not read znodes which from flash.
++ */
++void dbg_dump_index(struct ubifs_info *c)
++{
++ dbg_walk_index(c, NULL, dump_znode, NULL);
++}
++
++/*
++ * dbg_check_dir - check directory inode size and link count.
++ * @c: UBIFS file-system description object
++ * @dir: the directory to calculate size for
++ * @size: the result is returned here
++ *
++ * This function makes sure that directory size and link count are correct.
++ * Returns zero in case of success and a negative error code in case of
++ * failure.
++ *
++ * Note, it is good idea to make sure the @dir->i_mutex is locked before
++ * calling this function.
++ */
++int dbg_check_dir_size(struct ubifs_info *c, const struct inode *dir)
++{
++ unsigned int nlink = 2;
++ union ubifs_key key;
++ struct ubifs_dent_node *dent, *pdent = NULL;
++ struct qstr nm = { .name = NULL };
++ loff_t size = UBIFS_INO_NODE_SZ;
++
++ if (!(ubifs_chk_flags & UBIFS_CHK_GEN))
++ return 0;
++
++ if (!S_ISDIR(dir->i_mode))
++ return 0;
++
++ lowest_dent_key(c, &key, dir->i_ino);
++ while (1) {
++ int err;
++
++ dent = ubifs_tnc_next_ent(c, &key, &nm);
++ if (IS_ERR(dent)) {
++ err = PTR_ERR(dent);
++ if (err == -ENOENT)
++ break;
++ return err;
++ }
++
++ nm.name = dent->name;
++ nm.len = le16_to_cpu(dent->nlen);
++ size += CALC_DENT_SIZE(nm.len);
++ if (dent->type == UBIFS_ITYPE_DIR)
++ nlink += 1;
++ kfree(pdent);
++ pdent = dent;
++ key_read(c, &dent->key, &key);
++ }
++ kfree(pdent);
++
++ if (i_size_read(dir) != size) {
++ ubifs_err("directory inode %lu has size %llu, "
++ "but calculated size is %llu", dir->i_ino,
++ (unsigned long long)i_size_read(dir),
++ (unsigned long long)size);
++ dump_stack();
++ return -EINVAL;
++ }
++ if (dir->i_nlink != nlink) {
++ ubifs_err("directory inode %lu has nlink %u, but calculated "
++ "nlink is %u", dir->i_ino, dir->i_nlink, nlink);
++ dump_stack();
++ return -EINVAL;
++ }
++
++ return 0;
++}
++
++/**
++ * dbg_check_key_order - make sure that colliding keys are properly ordered.
++ * @c: UBIFS file-system description object
++ * @zbr1: first zbranch
++ * @zbr1: following zbranch
++ *
++ * In UBIFS indexing B-tree colliding keys has to be sorted in binary order of
++ * names of the direntries/xentries which are referred by the keys. This
++ * function reads direntries/xentries referred by @zbr1 and @zbr2 and makes
++ * sure the name of direntry/xentry referred by @zbr1 is less than
++ * direntry/xentry referred by @zbr2. Returns zero if this is true, %1 if not,
++ * and a negative error code in case of failure.
++ */
++static int dbg_check_key_order(struct ubifs_info *c, struct ubifs_zbranch *zbr1,
++ struct ubifs_zbranch *zbr2)
++{
++ int err, nlen1, nlen2, cmp;
++ struct ubifs_dent_node *dent1, *dent2;
++ union ubifs_key key;
++
++ ubifs_assert(!keys_cmp(c, &zbr1->key, &zbr2->key));
++ dent1 = kmalloc(UBIFS_MAX_DENT_NODE_SZ, GFP_NOFS);
++ if (!dent1)
++ return -ENOMEM;
++ dent2 = kmalloc(UBIFS_MAX_DENT_NODE_SZ, GFP_NOFS);
++ if (!dent2) {
++ err = -ENOMEM;
++ goto out_free;
++ }
++
++ err = ubifs_tnc_read_node(c, zbr1, dent1);
++ if (err)
++ goto out_free;
++ err = ubifs_validate_entry(c, dent1);
++ if (err)
++ goto out_free;
++
++ err = ubifs_tnc_read_node(c, zbr2, dent2);
++ if (err)
++ goto out_free;
++ err = ubifs_validate_entry(c, dent2);
++ if (err)
++ goto out_free;
++
++ /* Make sure node keys are the same as in zbranch */
++ err = 1;
++ key_read(c, &dent1->key, &key);
++ if (keys_cmp(c, &zbr1->key, &key)) {
++ dbg_err("1st entry at %d:%d has key %s", zbr1->lnum,
++ zbr1->offs, DBGKEY(&key));
++ dbg_err("but it should have key %s according to tnc",
++ DBGKEY(&zbr1->key));
++ dbg_dump_node(c, dent1);
++ goto out_free;
++ }
++
++ key_read(c, &dent2->key, &key);
++ if (keys_cmp(c, &zbr2->key, &key)) {
++ dbg_err("2nd entry at %d:%d has key %s", zbr1->lnum,
++ zbr1->offs, DBGKEY(&key));
++ dbg_err("but it should have key %s according to tnc",
++ DBGKEY(&zbr2->key));
++ dbg_dump_node(c, dent2);
++ goto out_free;
++ }
++
++ nlen1 = le16_to_cpu(dent1->nlen);
++ nlen2 = le16_to_cpu(dent2->nlen);
++
++ cmp = memcmp(dent1->name, dent2->name, min_t(int, nlen1, nlen2));
++ if (cmp < 0 || (cmp == 0 && nlen1 < nlen2)) {
++ err = 0;
++ goto out_free;
++ }
++ if (cmp == 0 && nlen1 == nlen2)
++ dbg_err("2 xent/dent nodes with the same name");
++ else
++ dbg_err("bad order of colliding key %s",
++ DBGKEY(&key));
++
++ dbg_msg("first node at %d:%d\n", zbr1->lnum, zbr1->offs);
++ dbg_dump_node(c, dent1);
++ dbg_msg("second node at %d:%d\n", zbr2->lnum, zbr2->offs);
++ dbg_dump_node(c, dent2);
++
++out_free:
++ kfree(dent2);
++ kfree(dent1);
++ return err;
++}
++
++/**
++ * dbg_check_znode - check if znode is all right.
++ * @c: UBIFS file-system description object
++ * @zbr: zbranch which points to this znode
++ *
++ * This function makes sure that znode referred to by @zbr is all right.
++ * Returns zero if it is, and %-EINVAL if it is not.
++ */
++static int dbg_check_znode(struct ubifs_info *c, struct ubifs_zbranch *zbr)
++{
++ struct ubifs_znode *znode = zbr->znode;
++ struct ubifs_znode *zp = znode->parent;
++ int n, err, cmp;
++
++ if (znode->child_cnt <= 0 || znode->child_cnt > c->fanout) {
++ err = 1;
++ goto out;
++ }
++ if (znode->level < 0) {
++ err = 2;
++ goto out;
++ }
++ if (znode->iip < 0 || znode->iip >= c->fanout) {
++ err = 3;
++ goto out;
++ }
++
++ if (zbr->len == 0)
++ /* Only dirty zbranch may have no on-flash nodes */
++ if (!ubifs_zn_dirty(znode)) {
++ err = 4;
++ goto out;
++ }
++
++ if (ubifs_zn_dirty(znode)) {
++ /*
++ * If znode is dirty, its parent has to be dirty as well. The
++ * order of the operation is important, so we have to have
++ * memory barriers.
++ */
++ smp_mb();
++ if (zp && !ubifs_zn_dirty(zp)) {
++ /*
++ * The dirty flag is atomic and is cleared outside the
++ * TNC mutex, so znode's dirty flag may now have
++ * been cleared. The child is always cleared before the
++ * parent, so we just need to check again.
++ */
++ smp_mb();
++ if (ubifs_zn_dirty(znode)) {
++ err = 5;
++ goto out;
++ }
++ }
++ }
++
++ if (zp) {
++ const union ubifs_key *min, *max;
++
++ if (znode->level != zp->level - 1) {
++ err = 6;
++ goto out;
++ }
++
++ /* Make sure the 'parent' pointer in our znode is correct */
++ err = ubifs_search_zbranch(c, zp, &zbr->key, &n);
++ if (!err) {
++ /* This zbranch does not exist in the parent */
++ err = 7;
++ goto out;
++ }
++
++ if (znode->iip >= zp->child_cnt) {
++ err = 8;
++ goto out;
++ }
++
++ if (znode->iip != n) {
++ /* This may happen only in case of collisions */
++ if (keys_cmp(c, &zp->zbranch[n].key,
++ &zp->zbranch[znode->iip].key)) {
++ err = 9;
++ goto out;
++ }
++ n = znode->iip;
++ }
++
++ /*
++ * Make sure that the first key in our znode is greater than or
++ * equal to the key in the pointing zbranch.
++ */
++ min = &zbr->key;
++ cmp = keys_cmp(c, min, &znode->zbranch[0].key);
++ if (cmp == 1) {
++ err = 10;
++ goto out;
++ }
++
++ if (n + 1 < zp->child_cnt) {
++ max = &zp->zbranch[n + 1].key;
++
++ /*
++ * Make sure the last key in our znode is less or
++ * equivalent than the the key in zbranch which goes
++ * after our pointing zbranch.
++ */
++ cmp = keys_cmp(c, max,
++ &znode->zbranch[znode->child_cnt - 1].key);
++ if (cmp == -1) {
++ err = 11;
++ goto out;
++ }
++ }
++ } else {
++ /* This may only be root znode */
++ if (zbr != &c->zroot) {
++ err = 12;
++ goto out;
++ }
++ }
++
++ /*
++ * Make sure that next key is greater or equivalent then the previous
++ * one.
++ */
++ for (n = 1; n < znode->child_cnt; n++) {
++ cmp = keys_cmp(c, &znode->zbranch[n - 1].key,
++ &znode->zbranch[n].key);
++ if (cmp > 0) {
++ err = 13;
++ goto out;
++ }
++ if (cmp == 0) {
++ /* This can only be keys with colliding hash */
++ if (!is_hash_key(c, &znode->zbranch[n].key)) {
++ err = 14;
++ goto out;
++ }
++
++ if (znode->level != 0 || c->replaying)
++ continue;
++
++ /*
++ * Colliding keys should follow binary order of
++ * corresponding xentry/dentry names.
++ */
++ err = dbg_check_key_order(c, &znode->zbranch[n - 1],
++ &znode->zbranch[n]);
++ if (err < 0)
++ return err;
++ if (err) {
++ err = 15;
++ goto out;
++ }
++ }
++ }
++
++ for (n = 0; n < znode->child_cnt; n++) {
++ if (!znode->zbranch[n].znode &&
++ (znode->zbranch[n].lnum == 0 ||
++ znode->zbranch[n].len == 0)) {
++ err = 16;
++ goto out;
++ }
++
++ if (znode->zbranch[n].lnum != 0 &&
++ znode->zbranch[n].len == 0) {
++ err = 17;
++ goto out;
++ }
++
++ if (znode->zbranch[n].lnum == 0 &&
++ znode->zbranch[n].len != 0) {
++ err = 18;
++ goto out;
++ }
++
++ if (znode->zbranch[n].lnum == 0 &&
++ znode->zbranch[n].offs != 0) {
++ err = 19;
++ goto out;
++ }
++
++ if (znode->level != 0 && znode->zbranch[n].znode)
++ if (znode->zbranch[n].znode->parent != znode) {
++ err = 20;
++ goto out;
++ }
++ }
++
++ return 0;
++
++out:
++ ubifs_err("failed, error %d", err);
++ ubifs_msg("dump of the znode");
++ dbg_dump_znode(c, znode);
++ if (zp) {
++ ubifs_msg("dump of the parent znode");
++ dbg_dump_znode(c, zp);
++ }
++ dump_stack();
++ return -EINVAL;
++}
++
++/**
++ * dbg_check_tnc - check TNC tree.
++ * @c: UBIFS file-system description object
++ * @extra: do extra checks that are possible at start commit
++ *
++ * This function traverses whole TNC tree and checks every znode. Returns zero
++ * if everything is all right and %-EINVAL if something is wrong with TNC.
++ */
++int dbg_check_tnc(struct ubifs_info *c, int extra)
++{
++ struct ubifs_znode *znode;
++ long clean_cnt = 0, dirty_cnt = 0;
++ int err, last;
++
++ if (!(ubifs_chk_flags & UBIFS_CHK_TNC))
++ return 0;
++
++ ubifs_assert(mutex_is_locked(&c->tnc_mutex));
++ if (!c->zroot.znode)
++ return 0;
++
++ znode = ubifs_tnc_postorder_first(c->zroot.znode);
++ while (1) {
++ struct ubifs_znode *prev;
++ struct ubifs_zbranch *zbr;
++
++ if (!znode->parent)
++ zbr = &c->zroot;
++ else
++ zbr = &znode->parent->zbranch[znode->iip];
++
++ err = dbg_check_znode(c, zbr);
++ if (err)
++ return err;
++
++ if (extra) {
++ if (ubifs_zn_dirty(znode))
++ dirty_cnt += 1;
++ else
++ clean_cnt += 1;
++ }
++
++ prev = znode;
++ znode = ubifs_tnc_postorder_next(znode);
++ if (!znode)
++ break;
++
++ /*
++ * If the last key of this znode is equivalent to the first key
++ * of the next znode (collision), then check order of the keys.
++ */
++ last = prev->child_cnt - 1;
++ if (prev->level == 0 && znode->level == 0 && !c->replaying &&
++ !keys_cmp(c, &prev->zbranch[last].key,
++ &znode->zbranch[0].key)) {
++ err = dbg_check_key_order(c, &prev->zbranch[last],
++ &znode->zbranch[0]);
++ if (err < 0)
++ return err;
++ if (err) {
++ ubifs_msg("first znode");
++ dbg_dump_znode(c, prev);
++ ubifs_msg("second znode");
++ dbg_dump_znode(c, znode);
++ return -EINVAL;
++ }
++ }
++ }
++
++ if (extra) {
++ if (clean_cnt != atomic_long_read(&c->clean_zn_cnt)) {
++ ubifs_err("incorrect clean_zn_cnt %ld, calculated %ld",
++ atomic_long_read(&c->clean_zn_cnt),
++ clean_cnt);
++ return -EINVAL;
++ }
++ if (dirty_cnt != atomic_long_read(&c->dirty_zn_cnt)) {
++ ubifs_err("incorrect dirty_zn_cnt %ld, calculated %ld",
++ atomic_long_read(&c->dirty_zn_cnt),
++ dirty_cnt);
++ return -EINVAL;
++ }
++ }
++
++ return 0;
++}
++
++/**
++ * dbg_walk_index - walk the on-flash index.
++ * @c: UBIFS file-system description object
++ * @leaf_cb: called for each leaf node
++ * @znode_cb: called for each indexing node
++ * @priv: private date which is passed to callbacks
++ *
++ * This function walks the UBIFS index and calls the @leaf_cb for each leaf
++ * node and @znode_cb for each indexing node. Returns zero in case of success
++ * and a negative error code in case of failure.
++ *
++ * It would be better if this function removed every znode it pulled to into
++ * the TNC, so that the behavior more closely matched the non-debugging
++ * behavior.
++ */
++int dbg_walk_index(struct ubifs_info *c, dbg_leaf_callback leaf_cb,
++ dbg_znode_callback znode_cb, void *priv)
++{
++ int err;
++ struct ubifs_zbranch *zbr;
++ struct ubifs_znode *znode, *child;
++
++ mutex_lock(&c->tnc_mutex);
++ /* If the root indexing node is not in TNC - pull it */
++ if (!c->zroot.znode) {
++ c->zroot.znode = ubifs_load_znode(c, &c->zroot, NULL, 0);
++ if (IS_ERR(c->zroot.znode)) {
++ err = PTR_ERR(c->zroot.znode);
++ c->zroot.znode = NULL;
++ goto out_unlock;
++ }
++ }
++
++ /*
++ * We are going to traverse the indexing tree in the postorder manner.
++ * Go down and find the leftmost indexing node where we are going to
++ * start from.
++ */
++ znode = c->zroot.znode;
++ while (znode->level > 0) {
++ zbr = &znode->zbranch[0];
++ child = zbr->znode;
++ if (!child) {
++ child = ubifs_load_znode(c, zbr, znode, 0);
++ if (IS_ERR(child)) {
++ err = PTR_ERR(child);
++ goto out_unlock;
++ }
++ zbr->znode = child;
++ }
++
++ znode = child;
++ }
++
++ /* Iterate over all indexing nodes */
++ while (1) {
++ int idx;
++
++ cond_resched();
++
++ if (znode_cb) {
++ err = znode_cb(c, znode, priv);
++ if (err) {
++ ubifs_err("znode checking function returned "
++ "error %d", err);
++ dbg_dump_znode(c, znode);
++ goto out_dump;
++ }
++ }
++ if (leaf_cb && znode->level == 0) {
++ for (idx = 0; idx < znode->child_cnt; idx++) {
++ zbr = &znode->zbranch[idx];
++ err = leaf_cb(c, zbr, priv);
++ if (err) {
++ ubifs_err("leaf checking function "
++ "returned error %d, for leaf "
++ "at LEB %d:%d",
++ err, zbr->lnum, zbr->offs);
++ goto out_dump;
++ }
++ }
++ }
++
++ if (!znode->parent)
++ break;
++
++ idx = znode->iip + 1;
++ znode = znode->parent;
++ if (idx < znode->child_cnt) {
++ /* Switch to the next index in the parent */
++ zbr = &znode->zbranch[idx];
++ child = zbr->znode;
++ if (!child) {
++ child = ubifs_load_znode(c, zbr, znode, idx);
++ if (IS_ERR(child)) {
++ err = PTR_ERR(child);
++ goto out_unlock;
++ }
++ zbr->znode = child;
++ }
++ znode = child;
++ } else
++ /*
++ * This is the last child, switch to the parent and
++ * continue.
++ */
++ continue;
++
++ /* Go to the lowest leftmost znode in the new sub-tree */
++ while (znode->level > 0) {
++ zbr = &znode->zbranch[0];
++ child = zbr->znode;
++ if (!child) {
++ child = ubifs_load_znode(c, zbr, znode, 0);
++ if (IS_ERR(child)) {
++ err = PTR_ERR(child);
++ goto out_unlock;
++ }
++ zbr->znode = child;
++ }
++ znode = child;
++ }
++ }
++
++ mutex_unlock(&c->tnc_mutex);
++ return 0;
++
++out_dump:
++ if (znode->parent)
++ zbr = &znode->parent->zbranch[znode->iip];
++ else
++ zbr = &c->zroot;
++ ubifs_msg("dump of znode at LEB %d:%d", zbr->lnum, zbr->offs);
++ dbg_dump_znode(c, znode);
++out_unlock:
++ mutex_unlock(&c->tnc_mutex);
++ return err;
++}
++
++/**
++ * add_size - add znode size to partially calculated index size.
++ * @c: UBIFS file-system description object
++ * @znode: znode to add size for
++ * @priv: partially calculated index size
++ *
++ * This is a helper function for 'dbg_check_idx_size()' which is called for
++ * every indexing node and adds its size to the 'long long' variable pointed to
++ * by @priv.
++ */
++static int add_size(struct ubifs_info *c, struct ubifs_znode *znode, void *priv)
++{
++ long long *idx_size = priv;
++ int add;
++
++ add = ubifs_idx_node_sz(c, znode->child_cnt);
++ add = ALIGN(add, 8);
++ *idx_size += add;
++ return 0;
++}
++
++/**
++ * dbg_check_idx_size - check index size.
++ * @c: UBIFS file-system description object
++ * @idx_size: size to check
++ *
++ * This function walks the UBIFS index, calculates its size and checks that the
++ * size is equivalent to @idx_size. Returns zero in case of success and a
++ * negative error code in case of failure.
++ */
++int dbg_check_idx_size(struct ubifs_info *c, long long idx_size)
++{
++ int err;
++ long long calc = 0;
++
++ if (!(ubifs_chk_flags & UBIFS_CHK_IDX_SZ))
++ return 0;
++
++ err = dbg_walk_index(c, NULL, add_size, &calc);
++ if (err) {
++ ubifs_err("error %d while walking the index", err);
++ return err;
++ }
++
++ if (calc != idx_size) {
++ ubifs_err("index size check failed: calculated size is %lld, "
++ "should be %lld", calc, idx_size);
++ dump_stack();
++ return -EINVAL;
++ }
++
++ return 0;
++}
++
++/**
++ * fsck_inode - information about an inode used when checking the file-system.
++ * @rb: link in the RB-tree of inodes
++ * @inum: inode number
++ * @mode: inode type, permissions, etc
++ * @nlink: inode link count
++ * @xatt_cnt: count of extended attributes
++ * @references: how many directory/xattr entries refer this inode (calculated
++ * while walking the index)
++ * @calc_cnt: for directory inode count of child directories, for regular files
++ * count of extended attributes
++ * @size: inode size (read from on-flash inode)
++ * @xattr_sz: summary size of all extended attributes (read from on-flash
++ * inode)
++ * @calc_sz: for directories calculated directory size, for regular files
++ * calculated summary size of all extended attributes
++ */
++struct fsck_inode {
++ struct rb_node rb;
++ ino_t inum;
++ umode_t mode;
++ int nlink;
++ int xattr_cnt;
++ int references;
++ int calc_cnt;
++ long long size;
++ long long xattr_sz;
++ long long calc_sz;
++};
++
++/**
++ * fsck_data - private FS checking information.
++ * @inodes: RB-tree of all inodes (contains @struct fsck_inode objects)
++ */
++struct fsck_data {
++ struct rb_root inodes;
++};
++
++/**
++ * add_inode - add inode information to RB-tree of inodes.
++ * @c: UBIFS file-system description object
++ * @fsckd: FS checking information
++ * @ino: raw UBIFS inode to add
++ *
++ * This is a helper function for 'check_leaf()' which adds information about
++ * inode @ino to the RB-tree of inodes. Returns inode information pointer in
++ * case of success and a negative error code in case of failure.
++ */
++static struct fsck_inode *add_inode(struct ubifs_info *c,
++ struct fsck_data *fsckd,
++ struct ubifs_ino_node *ino)
++{
++ struct rb_node **p, *parent = NULL;
++ struct fsck_inode *fscki;
++ ino_t inum = key_inum_flash(c, &ino->key);
++
++ p = &fsckd->inodes.rb_node;
++ while (*p) {
++ parent = *p;
++ fscki = rb_entry(parent, struct fsck_inode, rb);
++ if (inum < fscki->inum)
++ p = &(*p)->rb_left;
++ else if (inum > fscki->inum)
++ p = &(*p)->rb_right;
++ else
++ return fscki;
++ }
++
++ fscki = kzalloc(sizeof(struct fsck_inode), GFP_NOFS);
++ if (!fscki)
++ return ERR_PTR(-ENOMEM);
++
++ fscki->inum = inum;
++ fscki->nlink = le32_to_cpu(ino->nlink);
++ fscki->size = le64_to_cpu(ino->size);
++ fscki->xattr_cnt = le32_to_cpu(ino->xattr_cnt);
++ fscki->xattr_sz = le64_to_cpu(ino->xattr_size);
++ fscki->mode = le32_to_cpu(ino->mode);
++ if (S_ISDIR(fscki->mode)) {
++ fscki->calc_sz = UBIFS_INO_NODE_SZ;
++ fscki->calc_cnt = 2;
++ }
++ rb_link_node(&fscki->rb, parent, p);
++ rb_insert_color(&fscki->rb, &fsckd->inodes);
++ return fscki;
++}
++
++/**
++ * search_inode - search inode in the RB-tree of inodes.
++ * @fsckd: FS checking information
++ * @inum: inode number to search
++ *
++ * This is a helper function for 'check_leaf()' which searches inode @inum in
++ * the RB-tree of inodes and returns an inode information pointer or %NULL if
++ * the inode was not found.
++ */
++static struct fsck_inode *search_inode(struct fsck_data *fsckd, ino_t inum)
++{
++ struct rb_node *p;
++ struct fsck_inode *fscki;
++
++ p = fsckd->inodes.rb_node;
++ while (p) {
++ fscki = rb_entry(p, struct fsck_inode, rb);
++ if (inum < fscki->inum)
++ p = p->rb_left;
++ else if (inum > fscki->inum)
++ p = p->rb_right;
++ else
++ return fscki;
++ }
++ return NULL;
++}
++
++/**
++ * read_add_inode - read inode node and add it to RB-tree of inodes.
++ * @c: UBIFS file-system description object
++ * @fsckd: FS checking information
++ * @inum: inode number to read
++ *
++ * This is a helper function for 'check_leaf()' which finds inode node @inum in
++ * the index, reads it, and adds it to the RB-tree of inodes. Returns inode
++ * information pointer in case of success and a negative error code in case of
++ * failure.
++ */
++static struct fsck_inode *read_add_inode(struct ubifs_info *c,
++ struct fsck_data *fsckd, ino_t inum)
++{
++ int n, err;
++ union ubifs_key key;
++ struct ubifs_znode *znode;
++ struct ubifs_zbranch *zbr;
++ struct ubifs_ino_node *ino;
++ struct fsck_inode *fscki;
++
++ fscki = search_inode(fsckd, inum);
++ if (fscki)
++ return fscki;
++
++ ino_key_init(c, &key, inum);
++ err = ubifs_lookup_level0(c, &key, &znode, &n);
++ if (!err) {
++ ubifs_err("inode %lu not found in index", inum);
++ return ERR_PTR(-ENOENT);
++ } else if (err < 0) {
++ ubifs_err("error %d while looking up inode %lu", err, inum);
++ return ERR_PTR(err);
++ }
++
++ zbr = &znode->zbranch[n];
++ if (zbr->len < UBIFS_INO_NODE_SZ) {
++ ubifs_err("bad node %lu node length %d", inum, zbr->len);
++ return ERR_PTR(-EINVAL);
++ }
++
++ ino = kmalloc(zbr->len, GFP_NOFS);
++ if (!ino)
++ return ERR_PTR(-ENOMEM);
++
++ err = ubifs_tnc_read_node(c, zbr, ino);
++ if (err) {
++ ubifs_err("cannot read inode node at LEB %d:%d, error %d",
++ zbr->lnum, zbr->offs, err);
++ kfree(ino);
++ return ERR_PTR(err);
++ }
++
++ fscki = add_inode(c, fsckd, ino);
++ kfree(ino);
++ if (IS_ERR(fscki)) {
++ ubifs_err("error %ld while adding inode %lu node",
++ PTR_ERR(fscki), inum);
++ return fscki;
++ }
++
++ return fscki;
++}
++
++/**
++ * check_leaf - check leaf node.
++ * @c: UBIFS file-system description object
++ * @zbr: zbranch of the leaf node to check
++ * @priv: FS checking information
++ *
++ * This is a helper function for 'dbg_check_filesystem()' which is called for
++ * every single leaf node while walking the indexing tree. It checks that the
++ * leaf node referred from the indexing tree exists, has correct CRC, and does
++ * some other basic validation. This function is also responsible for building
++ * an RB-tree of inodes - it adds all inodes into the RB-tree. It also
++ * calculates reference count, size, etc for each inode in order to later
++ * compare them to the information stored inside the inodes and detect possible
++ * inconsistencies. Returns zero in case of success and a negative error code
++ * in case of failure.
++ */
++static int check_leaf(struct ubifs_info *c, struct ubifs_zbranch *zbr,
++ void *priv)
++{
++ ino_t inum;
++ void *node;
++ int err, type = key_type(c, &zbr->key);
++ struct fsck_inode *fscki;
++
++ if (zbr->len < UBIFS_CH_SZ) {
++ ubifs_err("bad leaf length %d (LEB %d:%d)",
++ zbr->len, zbr->lnum, zbr->offs);
++ return -EINVAL;
++ }
++
++ node = kmalloc(zbr->len, GFP_NOFS);
++ if (!node)
++ return -ENOMEM;
++
++ err = ubifs_tnc_read_node(c, zbr, node);
++ if (err) {
++ ubifs_err("cannot read leaf node at LEB %d:%d, error %d",
++ zbr->lnum, zbr->offs, err);
++ goto out_free;
++ }
++
++ /* If this is an inode node, add it to RB-tree of inodes */
++ if (type == UBIFS_INO_KEY) {
++ fscki = add_inode(c, priv, node);
++ if (IS_ERR(fscki)) {
++ err = PTR_ERR(fscki);
++ ubifs_err("error %d while adding inode node", err);
++ goto out_dump;
++ }
++ goto out;
++ }
++
++ if (type != UBIFS_DENT_KEY && type != UBIFS_XENT_KEY &&
++ type != UBIFS_DATA_KEY) {
++ ubifs_err("unexpected node type %d at LEB %d:%d",
++ type, zbr->lnum, zbr->offs);
++ err = -EINVAL;
++ goto out_free;
++ }
++
++ if (type == UBIFS_DATA_KEY) {
++ long long blk_offs;
++ struct ubifs_data_node *dn = node;
++
++ /*
++ * Search the inode node this data node belongs to and insert
++ * it to the RB-tree of inodes.
++ */
++ inum = key_inum_flash(c, &dn->key);
++ fscki = read_add_inode(c, priv, inum);
++ if (IS_ERR(fscki)) {
++ err = PTR_ERR(fscki);
++ ubifs_err("error %d while processing data node and "
++ "trying to find inode node %lu", err, inum);
++ goto out_dump;
++ }
++
++ /* Make sure the data node is within inode size */
++ blk_offs = (key_block_flash(c, &dn->key) << UBIFS_BLOCK_SHIFT);
++ blk_offs += le32_to_cpu(dn->size);
++ if (blk_offs > fscki->size) {
++ ubifs_err("data node at LEB %d:%d is not within inode "
++ "size %lld", zbr->lnum, zbr->offs, fscki->size);
++ err = -EINVAL;
++ goto out_dump;
++ }
++ } else {
++ int nlen;
++ struct ubifs_dent_node *dent = node;
++ struct fsck_inode *fscki1;
++
++ err = ubifs_validate_entry(c, dent);
++ if (err)
++ goto out_dump;
++
++ /*
++ * Search the inode node this entry refers to and the parent
++ * inode node and insert them to the RB-tree of inodes.
++ */
++ inum = le64_to_cpu(dent->inum);
++ fscki = read_add_inode(c, priv, inum);
++ if (IS_ERR(fscki)) {
++ err = PTR_ERR(fscki);
++ ubifs_err("error %d while processing entry node and "
++ "trying to find inode node %lu", err, inum);
++ goto out_dump;
++ }
++
++ /* Count how many direntries or xentries refers this inode */
++ fscki->references += 1;
++
++ inum = key_inum_flash(c, &dent->key);
++ fscki1 = read_add_inode(c, priv, inum);
++ if (IS_ERR(fscki1)) {
++ err = PTR_ERR(fscki);
++ ubifs_err("error %d while processing entry node and "
++ "trying to find parent inode node %lu",
++ err, inum);
++ goto out_dump;
++ }
++
++ nlen = le16_to_cpu(dent->nlen);
++ if (type == UBIFS_XENT_KEY) {
++ fscki1->calc_cnt += 1;
++ fscki1->calc_sz += CALC_DENT_SIZE(nlen);
++ fscki1->calc_sz += CALC_XATTR_BYTES(fscki->size);
++ } else {
++ fscki1->calc_sz += CALC_DENT_SIZE(nlen);
++ if (dent->type == UBIFS_ITYPE_DIR)
++ fscki1->calc_cnt += 1;
++ }
++ }
++
++out:
++ kfree(node);
++ return 0;
++
++out_dump:
++ ubifs_msg("dump of node at LEB %d:%d", zbr->lnum, zbr->offs);
++ dbg_dump_node(c, node);
++out_free:
++ kfree(node);
++ return err;
++}
++
++/**
++ * free_inodes - free RB-tree of inodes.
++ * @fsckd: FS checking information
++ */
++static void free_inodes(struct fsck_data *fsckd)
++{
++ struct rb_node *this = fsckd->inodes.rb_node;
++ struct fsck_inode *fscki;
++
++ while (this) {
++ if (this->rb_left)
++ this = this->rb_left;
++ else if (this->rb_right)
++ this = this->rb_right;
++ else {
++ fscki = rb_entry(this, struct fsck_inode, rb);
++ this = rb_parent(this);
++ if (this) {
++ if (this->rb_left == &fscki->rb)
++ this->rb_left = NULL;
++ else
++ this->rb_right = NULL;
++ }
++ kfree(fscki);
++ }
++ }
++}
++
++/**
++ * check_inodes - checks all inodes.
++ * @c: UBIFS file-system description object
++ * @fsckd: FS checking information
++ *
++ * This is a helper function for 'dbg_check_filesystem()' which walks the
++ * RB-tree of inodes after the index scan has been finished, and checks that
++ * inode nlink, size, etc are correct. Returns zero if inodes are fine,
++ * %-EINVAL if not, and a negative error code in case of failure.
++ */
++static int check_inodes(struct ubifs_info *c, struct fsck_data *fsckd)
++{
++ int n, err;
++ union ubifs_key key;
++ struct ubifs_znode *znode;
++ struct ubifs_zbranch *zbr;
++ struct ubifs_ino_node *ino;
++ struct fsck_inode *fscki;
++ struct rb_node *this = rb_first(&fsckd->inodes);
++
++ while (this) {
++ fscki = rb_entry(this, struct fsck_inode, rb);
++ this = rb_next(this);
++
++ if (S_ISDIR(fscki->mode)) {
++ /*
++ * Directories have to have exactly one reference (they
++ * cannot have hardlinks), although root inode is an
++ * exception.
++ */
++ if (fscki->inum != UBIFS_ROOT_INO &&
++ fscki->references != 1) {
++ ubifs_err("directory inode %lu has %d "
++ "direntries which refer it, but "
++ "should be 1", fscki->inum,
++ fscki->references);
++ goto out_dump;
++ }
++ if (fscki->inum == UBIFS_ROOT_INO &&
++ fscki->references != 0) {
++ ubifs_err("root inode %lu has non-zero (%d) "
++ "direntries which refer it",
++ fscki->inum, fscki->references);
++ goto out_dump;
++ }
++ if (fscki->calc_sz != fscki->size) {
++ ubifs_err("directory inode %lu size is %lld, "
++ "but calculated size is %lld",
++ fscki->inum, fscki->size,
++ fscki->calc_sz);
++ goto out_dump;
++ }
++ if (fscki->calc_cnt != fscki->nlink) {
++ ubifs_err("directory inode %lu nlink is %d, "
++ "but calculated nlink is %d",
++ fscki->inum, fscki->nlink,
++ fscki->calc_cnt);
++ goto out_dump;
++ }
++ } else {
++ if (fscki->references != fscki->nlink) {
++ ubifs_err("inode %lu nlink is %d, but "
++ "calculated nlink is %d", fscki->inum,
++ fscki->nlink, fscki->references);
++ goto out_dump;
++ }
++ if (fscki->xattr_sz != fscki->calc_sz) {
++ ubifs_err("inode %lu has xattr size %lld, but "
++ "calculated size is %lld",
++ fscki->inum, fscki->xattr_sz,
++ fscki->calc_sz);
++ goto out_dump;
++ }
++ if (fscki->xattr_cnt != fscki->calc_cnt) {
++ ubifs_err("inode %lu has %d xattrs, but "
++ "calculated count is %d", fscki->inum,
++ fscki->xattr_cnt, fscki->calc_cnt);
++ goto out_dump;
++ }
++ }
++ }
++
++ return 0;
++
++out_dump:
++ /* Read the bad inode and dump it */
++ ino_key_init(c, &key, fscki->inum);
++ err = ubifs_lookup_level0(c, &key, &znode, &n);
++ if (!err) {
++ ubifs_err("inode %lu not found in index", fscki->inum);
++ return -ENOENT;
++ } else if (err < 0) {
++ ubifs_err("error %d while looking up inode %lu",
++ err, fscki->inum);
++ return err;
++ }
++
++ zbr = &znode->zbranch[n];
++ ino = kmalloc(zbr->len, GFP_NOFS);
++ if (!ino)
++ return -ENOMEM;
++
++ err = ubifs_tnc_read_node(c, zbr, ino);
++ if (err) {
++ ubifs_err("cannot read inode node at LEB %d:%d, error %d",
++ zbr->lnum, zbr->offs, err);
++ kfree(ino);
++ return err;
++ }
++
++ ubifs_msg("dump of the inode %lu sitting in LEB %d:%d",
++ fscki->inum, zbr->lnum, zbr->offs);
++ dbg_dump_node(c, ino);
++ kfree(ino);
++ return -EINVAL;
++}
++
++/**
++ * dbg_check_filesystem - check the file-system.
++ * @c: UBIFS file-system description object
++ *
++ * This function checks the file system, namely:
++ * o makes sure that all leaf nodes exist and their CRCs are correct;
++ * o makes sure inode nlink, size, xattr size/count are correct (for all
++ * inodes).
++ *
++ * The function reads whole indexing tree and all nodes, so it is pretty
++ * heavy-weight. Returns zero if the file-system is consistent, %-EINVAL if
++ * not, and a negative error code in case of failure.
++ */
++int dbg_check_filesystem(struct ubifs_info *c)
++{
++ int err;
++ struct fsck_data fsckd;
++
++ if (!(ubifs_chk_flags & UBIFS_CHK_FS))
++ return 0;
++
++ fsckd.inodes = RB_ROOT;
++ err = dbg_walk_index(c, check_leaf, NULL, &fsckd);
++ if (err)
++ goto out_free;
++
++ err = check_inodes(c, &fsckd);
++ if (err)
++ goto out_free;
++
++ free_inodes(&fsckd);
++ return 0;
++
++out_free:
++ ubifs_err("file-system check failed with error %d", err);
++ dump_stack();
++ free_inodes(&fsckd);
++ return err;
++}
++
++static int invocation_cnt;
++
++int dbg_force_in_the_gaps(void)
++{
++ if (!dbg_force_in_the_gaps_enabled)
++ return 0;
++ /* Force in-the-gaps every 8th commit */
++ return !((invocation_cnt++) & 0x7);
++}
++
++/* Failure mode for recovery testing */
++
++#define chance(n, d) (simple_rand() <= (n) * 32768LL / (d))
++
++struct failure_mode_info {
++ struct list_head list;
++ struct ubifs_info *c;
++};
++
++static LIST_HEAD(fmi_list);
++static DEFINE_SPINLOCK(fmi_lock);
++
++static unsigned int next;
++
++static int simple_rand(void)
++{
++ if (next == 0)
++ next = current->pid;
++ next = next * 1103515245 + 12345;
++ return (next >> 16) & 32767;
++}
++
++void dbg_failure_mode_registration(struct ubifs_info *c)
++{
++ struct failure_mode_info *fmi;
++
++ fmi = kmalloc(sizeof(struct failure_mode_info), GFP_NOFS);
++ if (!fmi) {
++ dbg_err("Failed to register failure mode - no memory");
++ return;
++ }
++ fmi->c = c;
++ spin_lock(&fmi_lock);
++ list_add_tail(&fmi->list, &fmi_list);
++ spin_unlock(&fmi_lock);
++}
++
++void dbg_failure_mode_deregistration(struct ubifs_info *c)
++{
++ struct failure_mode_info *fmi, *tmp;
++
++ spin_lock(&fmi_lock);
++ list_for_each_entry_safe(fmi, tmp, &fmi_list, list)
++ if (fmi->c == c) {
++ list_del(&fmi->list);
++ kfree(fmi);
++ }
++ spin_unlock(&fmi_lock);
++}
++
++static struct ubifs_info *dbg_find_info(struct ubi_volume_desc *desc)
++{
++ struct failure_mode_info *fmi;
++
++ spin_lock(&fmi_lock);
++ list_for_each_entry(fmi, &fmi_list, list)
++ if (fmi->c->ubi == desc) {
++ struct ubifs_info *c = fmi->c;
++
++ spin_unlock(&fmi_lock);
++ return c;
++ }
++ spin_unlock(&fmi_lock);
++ return NULL;
++}
++
++static int in_failure_mode(struct ubi_volume_desc *desc)
++{
++ struct ubifs_info *c = dbg_find_info(desc);
++
++ if (c)
++ return c->failure_mode;
++ return 0;
++}
++
++static int do_fail(struct ubi_volume_desc *desc, int lnum, int write)
++{
++ struct ubifs_info *c = dbg_find_info(desc);
++
++ if (!c || !dbg_failure_mode)
++ return 0;
++ if (c->failure_mode)
++ return 1;
++ if (!c->fail_cnt) {
++ /* First call - decide delay to failure */
++ if (chance(1, 2)) {
++ unsigned int delay = 1 << (simple_rand() >> 11);
++
++ if (chance(1, 2)) {
++ c->fail_delay = 1;
++ c->fail_timeout = jiffies +
++ msecs_to_jiffies(delay);
++ dbg_rcvry("failing after %ums", delay);
++ } else {
++ c->fail_delay = 2;
++ c->fail_cnt_max = delay;
++ dbg_rcvry("failing after %u calls", delay);
++ }
++ }
++ c->fail_cnt += 1;
++ }
++ /* Determine if failure delay has expired */
++ if (c->fail_delay == 1) {
++ if (time_before(jiffies, c->fail_timeout))
++ return 0;
++ } else if (c->fail_delay == 2)
++ if (c->fail_cnt++ < c->fail_cnt_max)
++ return 0;
++ if (lnum == UBIFS_SB_LNUM) {
++ if (write) {
++ if (chance(1, 2))
++ return 0;
++ } else if (chance(19, 20))
++ return 0;
++ dbg_rcvry("failing in super block LEB %d", lnum);
++ } else if (lnum == UBIFS_MST_LNUM || lnum == UBIFS_MST_LNUM + 1) {
++ if (chance(19, 20))
++ return 0;
++ dbg_rcvry("failing in master LEB %d", lnum);
++ } else if (lnum >= UBIFS_LOG_LNUM && lnum <= c->log_last) {
++ if (write) {
++ if (chance(99, 100))
++ return 0;
++ } else if (chance(399, 400))
++ return 0;
++ dbg_rcvry("failing in log LEB %d", lnum);
++ } else if (lnum >= c->lpt_first && lnum <= c->lpt_last) {
++ if (write) {
++ if (chance(7, 8))
++ return 0;
++ } else if (chance(19, 20))
++ return 0;
++ dbg_rcvry("failing in LPT LEB %d", lnum);
++ } else if (lnum >= c->orph_first && lnum <= c->orph_last) {
++ if (write) {
++ if (chance(1, 2))
++ return 0;
++ } else if (chance(9, 10))
++ return 0;
++ dbg_rcvry("failing in orphan LEB %d", lnum);
++ } else if (lnum == c->ihead_lnum) {
++ if (chance(99, 100))
++ return 0;
++ dbg_rcvry("failing in index head LEB %d", lnum);
++ } else if (c->jheads && lnum == c->jheads[GCHD].wbuf.lnum) {
++ if (chance(9, 10))
++ return 0;
++ dbg_rcvry("failing in GC head LEB %d", lnum);
++ } else if (write && !RB_EMPTY_ROOT(&c->buds) &&
++ !ubifs_search_bud(c, lnum)) {
++ if (chance(19, 20))
++ return 0;
++ dbg_rcvry("failing in non-bud LEB %d", lnum);
++ } else if (c->cmt_state == COMMIT_RUNNING_BACKGROUND ||
++ c->cmt_state == COMMIT_RUNNING_REQUIRED) {
++ if (chance(999, 1000))
++ return 0;
++ dbg_rcvry("failing in bud LEB %d commit running", lnum);
++ } else {
++ if (chance(9999, 10000))
++ return 0;
++ dbg_rcvry("failing in bud LEB %d commit not running", lnum);
++ }
++ ubifs_err("*** SETTING FAILURE MODE ON (LEB %d) ***", lnum);
++ c->failure_mode = 1;
++ dump_stack();
++ return 1;
++}
++
++static void cut_data(const void *buf, int len)
++{
++ int flen, i;
++ unsigned char *p = (void *)buf;
++
++ flen = (len * (long long)simple_rand()) >> 15;
++ for (i = flen; i < len; i++)
++ p[i] = 0xff;
++}
++
++int dbg_leb_read(struct ubi_volume_desc *desc, int lnum, char *buf, int offset,
++ int len, int check)
++{
++ if (in_failure_mode(desc))
++ return -EIO;
++ return ubi_leb_read(desc, lnum, buf, offset, len, check);
++}
++
++int dbg_leb_write(struct ubi_volume_desc *desc, int lnum, const void *buf,
++ int offset, int len, int dtype)
++{
++ int err;
++
++ if (in_failure_mode(desc))
++ return -EIO;
++ if (do_fail(desc, lnum, 1))
++ cut_data(buf, len);
++ err = ubi_leb_write(desc, lnum, buf, offset, len, dtype);
++ if (err)
++ return err;
++ if (in_failure_mode(desc))
++ return -EIO;
++ return 0;
++}
++
++int dbg_leb_change(struct ubi_volume_desc *desc, int lnum, const void *buf,
++ int len, int dtype)
++{
++ int err;
++
++ if (do_fail(desc, lnum, 1))
++ return -EIO;
++ err = ubi_leb_change(desc, lnum, buf, len, dtype);
++ if (err)
++ return err;
++ if (do_fail(desc, lnum, 1))
++ return -EIO;
++ return 0;
++}
++
++int dbg_leb_erase(struct ubi_volume_desc *desc, int lnum)
++{
++ int err;
++
++ if (do_fail(desc, lnum, 0))
++ return -EIO;
++ err = ubi_leb_erase(desc, lnum);
++ if (err)
++ return err;
++ if (do_fail(desc, lnum, 0))
++ return -EIO;
++ return 0;
++}
++
++int dbg_leb_unmap(struct ubi_volume_desc *desc, int lnum)
++{
++ int err;
++
++ if (do_fail(desc, lnum, 0))
++ return -EIO;
++ err = ubi_leb_unmap(desc, lnum);
++ if (err)
++ return err;
++ if (do_fail(desc, lnum, 0))
++ return -EIO;
++ return 0;
++}
++
++int dbg_is_mapped(struct ubi_volume_desc *desc, int lnum)
++{
++ if (in_failure_mode(desc))
++ return -EIO;
++ return ubi_is_mapped(desc, lnum);
++}
++
++#endif /* CONFIG_UBIFS_FS_DEBUG */
+diff --exclude=.git -urN linux-2.6.25.6/fs/ubifs/debug.h avr32-2.6/fs/ubifs/debug.h
+--- linux-2.6.25.6/fs/ubifs/debug.h 1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/fs/ubifs/debug.h 2008-06-12 15:09:45.315815846 +0200
+@@ -0,0 +1,396 @@
++/*
++ * This file is part of UBIFS.
++ *
++ * Copyright (C) 2006-2008 Nokia Corporation.
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published by
++ * the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but WITHOUT
++ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
++ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
++ * more details.
++ *
++ * You should have received a copy of the GNU General Public License along with
++ * this program; if not, write to the Free Software Foundation, Inc., 51
++ * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
++ *
++ * Authors: Artem Bityutskiy (Битюцкий Артём)
++ * Adrian Hunter
++ */
++
++#ifndef __UBIFS_DEBUG_H__
++#define __UBIFS_DEBUG_H__
++
++#ifdef CONFIG_UBIFS_FS_DEBUG
++
++#define UBIFS_DBG(op) op
++
++#define ubifs_assert(expr) do { \
++ if (unlikely(!(expr))) { \
++ printk(KERN_CRIT "UBIFS assert failed in %s at %u (pid %d)\n", \
++ __func__, __LINE__, current->pid); \
++ dbg_dump_stack(); \
++ } \
++} while (0)
++
++#define ubifs_assert_cmt_locked(c) do { \
++ if (unlikely(down_write_trylock(&(c)->commit_sem))) { \
++ up_write(&(c)->commit_sem); \
++ printk(KERN_CRIT "commit lock is not locked!\n"); \
++ ubifs_assert(0); \
++ } \
++} while (0)
++
++#define dbg_dump_stack() do { \
++ if (!dbg_failure_mode) \
++ dump_stack(); \
++} while (0)
++
++/* Generic debugging messages */
++#define dbg_msg(fmt, ...) do { \
++ spin_lock(&dbg_lock); \
++ printk(KERN_DEBUG "UBIFS DBG (pid %d): %s: " fmt "\n", current->pid, \
++ __func__, ##__VA_ARGS__); \
++ spin_unlock(&dbg_lock); \
++} while (0)
++
++#define dbg_do_msg(typ, fmt, ...) do { \
++ if (ubifs_msg_flags & typ) \
++ dbg_msg(fmt, ##__VA_ARGS__); \
++} while (0)
++
++#define dbg_err(fmt, ...) do { \
++ spin_lock(&dbg_lock); \
++ ubifs_err(fmt, ##__VA_ARGS__); \
++ spin_unlock(&dbg_lock); \
++} while (0)
++
++const char *dbg_key_str0(const struct ubifs_info *c,
++ const union ubifs_key *key);
++const char *dbg_key_str1(const struct ubifs_info *c,
++ const union ubifs_key *key);
++
++/*
++ * DBGKEY macros require dbg_lock to be held, which it is in the dbg message
++ * macros.
++ */
++#define DBGKEY(key) dbg_key_str0(c, (key))
++#define DBGKEY1(key) dbg_key_str1(c, (key))
++
++/* General messages */
++#define dbg_gen(fmt, ...) dbg_do_msg(UBIFS_MSG_GEN, fmt, ##__VA_ARGS__)
++
++/* Additional journal messages */
++#define dbg_jnl(fmt, ...) dbg_do_msg(UBIFS_MSG_JNL, fmt, ##__VA_ARGS__)
++
++/* Additional TNC messages */
++#define dbg_tnc(fmt, ...) dbg_do_msg(UBIFS_MSG_TNC, fmt, ##__VA_ARGS__)
++
++/* Additional lprops messages */
++#define dbg_lp(fmt, ...) dbg_do_msg(UBIFS_MSG_LP, fmt, ##__VA_ARGS__)
++
++/* Additional LEB find messages */
++#define dbg_find(fmt, ...) dbg_do_msg(UBIFS_MSG_FIND, fmt, ##__VA_ARGS__)
++
++/* Additional mount messages */
++#define dbg_mnt(fmt, ...) dbg_do_msg(UBIFS_MSG_MNT, fmt, ##__VA_ARGS__)
++
++/* Additional I/O messages */
++#define dbg_io(fmt, ...) dbg_do_msg(UBIFS_MSG_IO, fmt, ##__VA_ARGS__)
++
++/* Additional commit messages */
++#define dbg_cmt(fmt, ...) dbg_do_msg(UBIFS_MSG_CMT, fmt, ##__VA_ARGS__)
++
++/* Additional budgeting messages */
++#define dbg_budg(fmt, ...) dbg_do_msg(UBIFS_MSG_BUDG, fmt, ##__VA_ARGS__)
++
++/* Additional log messages */
++#define dbg_log(fmt, ...) dbg_do_msg(UBIFS_MSG_LOG, fmt, ##__VA_ARGS__)
++
++/* Additional gc messages */
++#define dbg_gc(fmt, ...) dbg_do_msg(UBIFS_MSG_GC, fmt, ##__VA_ARGS__)
++
++/* Additional scan messages */
++#define dbg_scan(fmt, ...) dbg_do_msg(UBIFS_MSG_SCAN, fmt, ##__VA_ARGS__)
++
++/* Additional recovery messages */
++#define dbg_rcvry(fmt, ...) dbg_do_msg(UBIFS_MSG_RCVRY, fmt, ##__VA_ARGS__)
++
++/*
++ * Debugging message type flags (must match msg_type_names in debug.c).
++ *
++ * UBIFS_MSG_GEN: general messages
++ * UBIFS_MSG_JNL: journal messages
++ * UBIFS_MSG_MNT: mount messages
++ * UBIFS_MSG_CMT: commit messages
++ * UBIFS_MSG_FIND: LEB find messages
++ * UBIFS_MSG_BUDG: budgeting messages
++ * UBIFS_MSG_GC: garbage collection messages
++ * UBIFS_MSG_TNC: TNC messages
++ * UBIFS_MSG_LP: lprops messages
++ * UBIFS_MSG_IO: I/O messages
++ * UBIFS_MSG_LOG: log messages
++ * UBIFS_MSG_SCAN: scan messages
++ * UBIFS_MSG_RCVRY: recovery messages
++ */
++enum {
++ UBIFS_MSG_GEN = 0x1,
++ UBIFS_MSG_JNL = 0x2,
++ UBIFS_MSG_MNT = 0x4,
++ UBIFS_MSG_CMT = 0x8,
++ UBIFS_MSG_FIND = 0x10,
++ UBIFS_MSG_BUDG = 0x20,
++ UBIFS_MSG_GC = 0x40,
++ UBIFS_MSG_TNC = 0x80,
++ UBIFS_MSG_LP = 0x100,
++ UBIFS_MSG_IO = 0x200,
++ UBIFS_MSG_LOG = 0x400,
++ UBIFS_MSG_SCAN = 0x800,
++ UBIFS_MSG_RCVRY = 0x1000,
++};
++
++/* Debugging message type flags for each default debug message level */
++#define UBIFS_MSG_LVL_0 0
++#define UBIFS_MSG_LVL_1 0x1
++#define UBIFS_MSG_LVL_2 0x7f
++#define UBIFS_MSG_LVL_3 0xffff
++
++/*
++ * Debugging check flags (must match chk_names in debug.c).
++ *
++ * UBIFS_CHK_GEN: general checks
++ * UBIFS_CHK_TNC: check TNC
++ * UBIFS_CHK_IDX_SZ: check index size
++ * UBIFS_CHK_ORPH: check orphans
++ * UBIFS_CHK_OLD_IDX: check the old index
++ * UBIFS_CHK_LPROPS: check lprops
++ * UBIFS_CHK_FS: check the file-system
++ */
++enum {
++ UBIFS_CHK_GEN = 0x1,
++ UBIFS_CHK_TNC = 0x2,
++ UBIFS_CHK_IDX_SZ = 0x4,
++ UBIFS_CHK_ORPH = 0x8,
++ UBIFS_CHK_OLD_IDX = 0x10,
++ UBIFS_CHK_LPROPS = 0x20,
++ UBIFS_CHK_FS = 0x40,
++};
++
++/*
++ * Special testing flags (must match tst_names in debug.c).
++ *
++ * UBIFS_TST_FORCE_IN_THE_GAPS: force the use of in-the-gaps method
++ * UBIFS_TST_RCVRY: failure mode for recovery testing
++ */
++enum {
++ UBIFS_TST_FORCE_IN_THE_GAPS = 0x2,
++ UBIFS_TST_RCVRY = 0x4,
++};
++
++#if CONFIG_UBIFS_FS_DEBUG_MSG_LVL == 1
++#define UBIFS_MSG_FLAGS_DEFAULT UBIFS_MSG_LVL_1
++#elif CONFIG_UBIFS_FS_DEBUG_MSG_LVL == 2
++#define UBIFS_MSG_FLAGS_DEFAULT UBIFS_MSG_LVL_2
++#elif CONFIG_UBIFS_FS_DEBUG_MSG_LVL == 3
++#define UBIFS_MSG_FLAGS_DEFAULT UBIFS_MSG_LVL_3
++#else
++#define UBIFS_MSG_FLAGS_DEFAULT UBIFS_MSG_LVL_0
++#endif
++
++#ifdef CONFIG_UBIFS_FS_DEBUG_CHKS
++#define UBIFS_CHK_FLAGS_DEFAULT 0xffffffff
++#else
++#define UBIFS_CHK_FLAGS_DEFAULT 0
++#endif
++
++extern spinlock_t dbg_lock;
++
++extern unsigned int ubifs_msg_flags;
++extern unsigned int ubifs_chk_flags;
++extern unsigned int ubifs_tst_flags;
++
++/* Dump functions */
++
++const char *dbg_ntype(int type);
++const char *dbg_cstate(int cmt_state);
++const char *dbg_get_key_dump(const struct ubifs_info *c,
++ const union ubifs_key *key);
++void dbg_dump_inode(const struct ubifs_info *c, const struct inode *inode);
++void dbg_dump_node(const struct ubifs_info *c, const void *node);
++void dbg_dump_budget_req(const struct ubifs_budget_req *req);
++void dbg_dump_lstats(const struct ubifs_lp_stats *lst);
++void dbg_dump_budg(struct ubifs_info *c);
++void dbg_dump_lprop(const struct ubifs_info *c, const struct ubifs_lprops *lp);
++void dbg_dump_lprops(struct ubifs_info *c);
++void dbg_dump_leb(const struct ubifs_info *c, int lnum);
++void dbg_dump_znode(const struct ubifs_info *c,
++ const struct ubifs_znode *znode);
++void dbg_dump_heap(struct ubifs_info *c, struct ubifs_lpt_heap *heap, int cat);
++void dbg_dump_pnode(struct ubifs_info *c, struct ubifs_pnode *pnode,
++ struct ubifs_nnode *parent, int iip);
++void dbg_dump_tnc(struct ubifs_info *c);
++void dbg_dump_index(struct ubifs_info *c);
++
++/* Checking helper functions */
++
++typedef int (*dbg_leaf_callback)(struct ubifs_info *c,
++ struct ubifs_zbranch *zbr, void *priv);
++typedef int (*dbg_znode_callback)(struct ubifs_info *c,
++ struct ubifs_znode *znode, void *priv);
++
++int dbg_walk_index(struct ubifs_info *c, dbg_leaf_callback leaf_cb,
++ dbg_znode_callback znode_cb, void *priv);
++
++/* Checking functions */
++
++int dbg_check_lprops(struct ubifs_info *c);
++
++int dbg_old_index_check_init(struct ubifs_info *c, struct ubifs_zbranch *zroot);
++int dbg_check_old_index(struct ubifs_info *c, struct ubifs_zbranch *zroot);
++
++int dbg_check_cats(struct ubifs_info *c);
++
++int dbg_check_ltab(struct ubifs_info *c);
++
++int dbg_check_dir_size(struct ubifs_info *c, const struct inode *dir);
++
++int dbg_check_tnc(struct ubifs_info *c, int extra);
++
++int dbg_check_idx_size(struct ubifs_info *c, long long idx_size);
++
++int dbg_check_filesystem(struct ubifs_info *c);
++
++void dbg_check_heap(struct ubifs_info *c, struct ubifs_lpt_heap *heap, int cat,
++ int add_pos);
++
++int dbg_check_lprops(struct ubifs_info *c);
++int dbg_check_lpt_nodes(struct ubifs_info *c, struct ubifs_cnode *cnode,
++ int row, int col);
++
++/* Force the use of in-the-gaps method for testing */
++
++#define dbg_force_in_the_gaps_enabled \
++ (ubifs_tst_flags & UBIFS_TST_FORCE_IN_THE_GAPS)
++
++int dbg_force_in_the_gaps(void);
++
++/* Failure mode for recovery testing */
++
++#define dbg_failure_mode (ubifs_tst_flags & UBIFS_TST_RCVRY)
++
++void dbg_failure_mode_registration(struct ubifs_info *c);
++void dbg_failure_mode_deregistration(struct ubifs_info *c);
++
++#ifndef UBIFS_DBG_PRESERVE_UBI
++
++#define ubi_leb_read dbg_leb_read
++#define ubi_leb_write dbg_leb_write
++#define ubi_leb_change dbg_leb_change
++#define ubi_leb_erase dbg_leb_erase
++#define ubi_leb_unmap dbg_leb_unmap
++#define ubi_is_mapped dbg_is_mapped
++
++#endif
++
++int dbg_leb_read(struct ubi_volume_desc *desc, int lnum, char *buf, int offset,
++ int len, int check);
++int dbg_leb_write(struct ubi_volume_desc *desc, int lnum, const void *buf,
++ int offset, int len, int dtype);
++int dbg_leb_change(struct ubi_volume_desc *desc, int lnum, const void *buf,
++ int len, int dtype);
++int dbg_leb_erase(struct ubi_volume_desc *desc, int lnum);
++int dbg_leb_unmap(struct ubi_volume_desc *desc, int lnum);
++int dbg_is_mapped(struct ubi_volume_desc *desc, int lnum);
++
++static inline int dbg_read(struct ubi_volume_desc *desc, int lnum, char *buf,
++ int offset, int len)
++{
++ return dbg_leb_read(desc, lnum, buf, offset, len, 0);
++}
++
++static inline int dbg_write(struct ubi_volume_desc *desc, int lnum,
++ const void *buf, int offset, int len)
++{
++ return dbg_leb_write(desc, lnum, buf, offset, len, UBI_UNKNOWN);
++}
++
++static inline int dbg_change(struct ubi_volume_desc *desc, int lnum,
++ const void *buf, int len)
++{
++ return dbg_leb_change(desc, lnum, buf, len, UBI_UNKNOWN);
++}
++
++#else /* !CONFIG_UBIFS_FS_DEBUG */
++
++#define UBIFS_DBG(op)
++#define ubifs_assert(expr) ({})
++#define ubifs_assert_cmt_locked(c)
++#define dbg_dump_stack()
++#define dbg_err(fmt, ...) ({})
++#define dbg_msg(fmt, ...) ({})
++#define dbg_key(c, key, fmt, ...) ({})
++
++#define dbg_gen(fmt, ...) ({})
++#define dbg_jnl(fmt, ...) ({})
++#define dbg_tnc(fmt, ...) ({})
++#define dbg_lp(fmt, ...) ({})
++#define dbg_find(fmt, ...) ({})
++#define dbg_mnt(fmt, ...) ({})
++#define dbg_io(fmt, ...) ({})
++#define dbg_cmt(fmt, ...) ({})
++#define dbg_budg(fmt, ...) ({})
++#define dbg_log(fmt, ...) ({})
++#define dbg_gc(fmt, ...) ({})
++#define dbg_scan(fmt, ...) ({})
++#define dbg_rcvry(fmt, ...) ({})
++
++#define dbg_ntype(type) ""
++#define dbg_cstate(cmt_state) ""
++#define dbg_get_key_dump(c, key) ({})
++#define dbg_dump_inode(c, inode) ({})
++#define dbg_dump_node(c, node) ({})
++#define dbg_dump_budget_req(req) ({})
++#define dbg_dump_lstats(lst) ({})
++#define dbg_dump_budg(c) ({})
++#define dbg_dump_lprop(c, lp) ({})
++#define dbg_dump_lprops(c) ({})
++#define dbg_dump_leb(c, lnum) ({})
++#define dbg_dump_znode(c, znode) ({})
++#define dbg_dump_heap(c, heap, cat) ({})
++#define dbg_dump_pnode(c, pnode, parent, iip) ({})
++#define dbg_dump_tnc(c) ({})
++#define dbg_dump_index(c) ({})
++
++#define dbg_walk_index(c, leaf_cb, znode_cb, priv) 0
++
++#define dbg_old_index_check_init(c, zroot) 0
++#define dbg_check_old_index(c, zroot) 0
++
++#define dbg_check_cats(c) 0
++
++#define dbg_check_ltab(c) 0
++
++#define dbg_check_dir_size(c, dir) 0
++
++#define dbg_check_tnc(c, x) 0
++
++#define dbg_check_idx_size(c, idx_size) 0
++#define dbg_check_filesystem(c) 0
++
++#define dbg_check_heap(c, heap, cat, add_pos) ({})
++
++#define dbg_check_lprops(c) 0
++#define dbg_check_lpt_nodes(c, cnode, row, col) 0
++
++#define dbg_force_in_the_gaps_enabled 0
++#define dbg_force_in_the_gaps() 0
++
++#define dbg_failure_mode 0
++#define dbg_failure_mode_registration(c) ({})
++#define dbg_failure_mode_deregistration(c) ({})
++
++#endif /* !CONFIG_UBIFS_FS_DEBUG */
++
++#endif /* !__UBIFS_DEBUG_H__ */
+diff --exclude=.git -urN linux-2.6.25.6/fs/ubifs/dir.c avr32-2.6/fs/ubifs/dir.c
+--- linux-2.6.25.6/fs/ubifs/dir.c 1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/fs/ubifs/dir.c 2008-06-12 15:09:45.364399968 +0200
+@@ -0,0 +1,1017 @@
++/*
++ * This file is part of UBIFS.
++ *
++ * Copyright (C) 2006-2008 Nokia Corporation.
++ * Copyright (C) 2006, 2007 University of Szeged, Hungary
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published by
++ * the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but WITHOUT
++ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
++ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
++ * more details.
++ *
++ * You should have received a copy of the GNU General Public License along with
++ * this program; if not, write to the Free Software Foundation, Inc., 51
++ * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
++ *
++ * Authors: Artem Bityutskiy (Битюцкий Артём)
++ * Adrian Hunter
++ * Zoltan Sogor
++ */
++
++/*
++ * This file implements directory operations.
++ *
++ * All FS operations in this file allocate budget before writing anything to the
++ * media. If they fail to allocate it, the error is returned. The only
++ * exceptions are 'ubifs_unlink()' and 'ubifs_rmdir()' which keep working even
++ * if they unable to allocate the budget, because deletion %-ENOSPC failure is
++ * not what users are usually ready to get. UBIFS budgeting subsystem has some
++ * space reserved for these purposes.
++ *
++ * All operations in this file change the parent inode, e.g., 'ubifs_link()'
++ * changes ctime and nlink of the parent inode. The parent inode is written to
++ * the media straight away - it is not marked as dirty and there is no
++ * write-back for it. This was done to simplify file-system recovery which
++ * would otherwise be very difficult to do. So instead of marking the parent
++ * inode dirty, the operations mark it clean.
++ */
++
++#include "ubifs.h"
++
++/*
++ * Provide backing_dev_info in order to disable readahead. For UBIFS, I/O is
++ * not deferred, it is done immediately in readpage, which means the user would
++ * have to wait not just for their own I/O but the readahead I/O as well i.e.
++ * completely pointless.
++ */
++struct backing_dev_info ubifs_backing_dev_info = {
++ .ra_pages = 0, /* Set to zero to disable readahead */
++ .state = 0,
++ .capabilities = BDI_CAP_MAP_COPY,
++ .unplug_io_fn = default_unplug_io_fn,
++};
++
++/**
++ * inherit_flags - inherit flags of the parent inode.
++ * @dir: parent inode
++ * @mode: new inode mode flags
++ *
++ * This is a helper function for 'ubifs_new_inode()' which inherits flag of the
++ * parent directory inode @dir. UBIFS inodes inherit the following flags:
++ * o %UBIFS_COMPR_FL, which is useful to switch compression on/of on
++ * sub-directory basis;
++ * o %UBIFS_SYNC_FL - useful for the same reasons;
++ * o %UBIFS_DIRSYNC_FL - similar, but relevant only to directories.
++ *
++ * This function returns the inherited flags.
++ */
++static int inherit_flags(const struct inode *dir, int mode)
++{
++ int flags;
++ const struct ubifs_inode *ui = ubifs_inode(dir);
++
++ if (!S_ISDIR(dir->i_mode))
++ /*
++ * The parent is not a directory, which means that an extended
++ * attribute inode is being created. No flags.
++ */
++ return 0;
++
++ flags = ui->flags & (UBIFS_COMPR_FL | UBIFS_SYNC_FL | UBIFS_DIRSYNC_FL);
++ if (!S_ISDIR(mode))
++ /* The "DIRSYNC" flag only applies to directories */
++ flags &= ~UBIFS_DIRSYNC_FL;
++
++ return flags;
++}
++
++/**
++ * ubifs_new_inode - allocate new UBIFS inode object.
++ * @c: UBIFS file-system description object
++ * @dir: parent directory inode
++ * @mode: inode mode flags
++ *
++ * This function finds an unused inode number, allocates new inode and
++ * initializes it. Returns new inode in case of success and an error code in
++ * case of failure.
++ */
++struct inode *ubifs_new_inode(struct ubifs_info *c, const struct inode *dir,
++ int mode)
++{
++ struct inode *inode;
++ struct ubifs_inode *ui;
++
++ inode = new_inode(c->vfs_sb);
++ if (!inode)
++ return ERR_PTR(-ENOMEM);
++
++ /*
++ * Set 'S_NOCMTIME' to prevent VFS form updating [mc]time of inodes and
++ * marking them dirty in file write path (see 'file_update_time()').
++ * UBIFS has to fully control "clean <-> dirty" transitions of inodes
++ * to make budgeting work.
++ */
++ inode->i_flags |= (S_NOCMTIME);
++
++ inode->i_uid = current->fsuid;
++ if (dir->i_mode & S_ISGID) {
++ inode->i_gid = dir->i_gid;
++ if (S_ISDIR(mode))
++ mode |= S_ISGID;
++ } else
++ inode->i_gid = current->fsgid;
++ inode->i_mode = mode;
++ inode->i_mtime = inode->i_atime = inode->i_ctime =
++ ubifs_current_time(inode);
++ inode->i_mapping->nrpages = 0;
++ /* Disable readahead */
++ inode->i_mapping->backing_dev_info = &ubifs_backing_dev_info;
++
++ switch (mode & S_IFMT) {
++ case S_IFREG:
++ inode->i_mapping->a_ops = &ubifs_file_address_operations;
++ inode->i_op = &ubifs_file_inode_operations;
++ inode->i_fop = &ubifs_file_operations;
++ break;
++ case S_IFDIR:
++ inode->i_op = &ubifs_dir_inode_operations;
++ inode->i_fop = &ubifs_dir_operations;
++ inode->i_size = UBIFS_INO_NODE_SZ;
++ break;
++ case S_IFLNK:
++ inode->i_op = &ubifs_symlink_inode_operations;
++ break;
++ case S_IFSOCK:
++ case S_IFIFO:
++ case S_IFBLK:
++ case S_IFCHR:
++ inode->i_op = &ubifs_file_inode_operations;
++ break;
++ default:
++ BUG();
++ }
++
++ ui = ubifs_inode(inode);
++ ui->flags = inherit_flags(dir, mode);
++ ubifs_set_inode_flags(inode);
++
++ if (S_ISREG(mode))
++ ui->compr_type = c->default_compr;
++ else
++ ui->compr_type = UBIFS_COMPR_NONE;
++
++ spin_lock(&c->cnt_lock);
++ /* Inode number overflow is currently not supported */
++ if (c->highest_inum >= INUM_WARN_WATERMARK) {
++ if (c->highest_inum >= INUM_WATERMARK) {
++ spin_unlock(&c->cnt_lock);
++ ubifs_err("out of inode numbers");
++ make_bad_inode(inode);
++ iput(inode);
++ return ERR_PTR(-EINVAL);
++ }
++ ubifs_warn("running out of inode numbers (current %lu, max %d)",
++ c->highest_inum, INUM_WATERMARK);
++ }
++
++ inode->i_ino = ++c->highest_inum;
++ inode->i_generation = ++c->vfs_gen;
++ /*
++ * The creation sequence number remains with this inode for its
++ * lifetime. All nodes for this inode have a greater sequence number,
++ * and so it is possible to distinguish obsolete nodes belonging to a
++ * previous incarnation of the same inode number - for example, for the
++ * purpose of rebuilding the index.
++ */
++ ui->creat_sqnum = ++c->max_sqnum;
++ spin_unlock(&c->cnt_lock);
++
++ return inode;
++}
++
++#ifdef CONFIG_UBIFS_FS_DEBUG
++
++static int dbg_check_name(struct ubifs_dent_node *dent, struct qstr *nm)
++{
++ if (!(ubifs_chk_flags & UBIFS_CHK_GEN))
++ return 0;
++ if (le16_to_cpu(dent->nlen) != nm->len)
++ return -EINVAL;
++ if (memcmp(dent->name, nm->name, nm->len))
++ return -EINVAL;
++ return 0;
++}
++
++#else
++
++#define dbg_check_name(dent, nm) 0
++
++#endif
++
++static struct dentry *ubifs_lookup(struct inode *dir, struct dentry *dentry,
++ struct nameidata *nd)
++{
++ int err;
++ union ubifs_key key;
++ struct inode *inode = NULL;
++ struct ubifs_dent_node *dent;
++ struct ubifs_info *c = dir->i_sb->s_fs_info;
++
++ dbg_gen("'%.*s' in dir ino %lu",
++ dentry->d_name.len, dentry->d_name.name, dir->i_ino);
++
++ if (dentry->d_name.len > UBIFS_MAX_NLEN)
++ return ERR_PTR(-ENAMETOOLONG);
++
++ dent = kmalloc(UBIFS_MAX_DENT_NODE_SZ, GFP_NOFS);
++ if (!dent)
++ return ERR_PTR(-ENOMEM);
++
++ dent_key_init(c, &key, dir->i_ino, &dentry->d_name);
++
++ err = ubifs_tnc_lookup_nm(c, &key, dent, &dentry->d_name);
++ if (err) {
++ if (err == -ENOENT) {
++ dbg_gen("not found");
++ goto done;
++ }
++ goto out;
++ }
++
++ if (dbg_check_name(dent, &dentry->d_name)) {
++ err = -EINVAL;
++ goto out;
++ }
++
++ inode = ubifs_iget(dir->i_sb, le64_to_cpu(dent->inum));
++ if (IS_ERR(inode)) {
++ /*
++ * This should not happen. Probably the file-system needs
++ * checking.
++ */
++ err = PTR_ERR(inode);
++ ubifs_err("dead directory entry '%.*s', error %d",
++ dentry->d_name.len, dentry->d_name.name, err);
++ ubifs_ro_mode(c, err);
++ goto out;
++ }
++
++done:
++ kfree(dent);
++ /*
++ * Note, d_splice_alias() would be required instead if we supported
++ * NFS.
++ */
++ d_add(dentry, inode);
++ return NULL;
++
++out:
++ kfree(dent);
++ return ERR_PTR(err);
++}
++
++static int ubifs_create(struct inode *dir, struct dentry *dentry, int mode,
++ struct nameidata *nd)
++{
++ struct inode *inode;
++ struct ubifs_info *c = dir->i_sb->s_fs_info;
++ struct ubifs_budget_req req = { .new_ino = 1, .new_dent = 1 };
++ int err, sz_change = CALC_DENT_SIZE(dentry->d_name.len);
++
++ dbg_gen("dent '%.*s', mode %#x in dir ino %lu",
++ dentry->d_name.len, dentry->d_name.name, mode, dir->i_ino);
++
++ inode = ubifs_new_inode(c, dir, mode);
++ if (IS_ERR(inode))
++ return PTR_ERR(inode);
++
++ err = ubifs_budget_inode_op(c, dir, &req);
++ if (err)
++ goto out;
++
++ dir->i_size += sz_change;
++
++ err = ubifs_jnl_update(c, dir, &dentry->d_name, inode, 0,
++ IS_DIRSYNC(dir), 0);
++ if (err)
++ goto out_budg;
++
++ insert_inode_hash(inode);
++ d_instantiate(dentry, inode);
++ ubifs_release_ino_clean(c, dir, &req);
++ return 0;
++
++out_budg:
++ dir->i_size -= sz_change;
++ ubifs_cancel_ino_op(c, dir, &req);
++ ubifs_err("cannot create regular file, error %d", err);
++out:
++ make_bad_inode(inode);
++ iput(inode);
++ return err;
++}
++
++/**
++ * vfs_dent_type - get VFS directory entry type.
++ * @type: UBIFS directory entry type
++ *
++ * This function converts UBIFS directory entry type into VFS directory entry
++ * type.
++ */
++static unsigned int vfs_dent_type(uint8_t type)
++{
++ switch (type) {
++ case UBIFS_ITYPE_REG:
++ return DT_REG;
++ case UBIFS_ITYPE_DIR:
++ return DT_DIR;
++ case UBIFS_ITYPE_LNK:
++ return DT_LNK;
++ case UBIFS_ITYPE_BLK:
++ return DT_BLK;
++ case UBIFS_ITYPE_CHR:
++ return DT_CHR;
++ case UBIFS_ITYPE_FIFO:
++ return DT_FIFO;
++ case UBIFS_ITYPE_SOCK:
++ return DT_SOCK;
++ default:
++ BUG();
++ }
++ return 0;
++}
++
++/*
++ * The classical Unix view for directory is that it is a linear array of
++ * (name, inode number) entries. Linux/VFS assumes this model as well.
++ * Particularly, 'readdir()' call wants us to return a directory entry offset
++ * which later may be used to continue 'readdir()'ing the directory or to
++ * 'seek()' to that specific direntry. Obviously UBIFS does not really fit this
++ * model because directory entries are identified by keys, which may collide.
++ *
++ * UBIFS uses directory entry hash value for directory offsets, so
++ * 'seekdir()'/'telldir()' may not always work because of possible key
++ * collisions. But UBIFS guarantees that consecutive 'readdir()' calls work
++ * properly by means of saving full directory entry name in the private field
++ * of the file description object.
++ *
++ * This means that UBIFS cannot support NFS which requires full
++ * 'seekdir()'/'telldir()' support.
++ */
++static int ubifs_readdir(struct file *file, void *dirent, filldir_t filldir)
++{
++ int err, over = 0;
++ struct qstr nm;
++ union ubifs_key key;
++ struct ubifs_dent_node *dent;
++ struct inode *dir = file->f_path.dentry->d_inode;
++ struct ubifs_info *c = dir->i_sb->s_fs_info;
++
++ dbg_gen("dir ino %lu, f_pos %#llx", dir->i_ino, file->f_pos);
++
++ if (file->f_pos > UBIFS_S_KEY_HASH_MASK || file->f_pos == 2)
++ /*
++ * The directory was seek'ed to a senseless position or there
++ * are no more entries.
++ */
++ return 0;
++
++ /* File positions 0 and 1 correspond to "." and ".." */
++ if (file->f_pos == 0) {
++ ubifs_assert(!file->private_data);
++ over = filldir(dirent, ".", 1, 0, dir->i_ino, DT_DIR);
++ if (over)
++ return 0;
++ file->f_pos = 1;
++ }
++
++ if (file->f_pos == 1) {
++ ubifs_assert(!file->private_data);
++ over = filldir(dirent, "..", 2, 1,
++ parent_ino(file->f_path.dentry), DT_DIR);
++ if (over)
++ return 0;
++
++ /* Find the first entry in TNC and save it */
++ lowest_dent_key(c, &key, dir->i_ino);
++ nm.name = NULL;
++ dent = ubifs_tnc_next_ent(c, &key, &nm);
++ if (IS_ERR(dent)) {
++ err = PTR_ERR(dent);
++ goto out;
++ }
++
++ file->f_pos = key_hash_flash(c, &dent->key);
++ file->private_data = dent;
++ }
++
++ dent = file->private_data;
++ if (!dent) {
++ /*
++ * The directory was seek'ed to and is now readdir'ed.
++ * Find the entry corresponding to @file->f_pos or the
++ * closest one.
++ */
++ dent_key_init_hash(c, &key, dir->i_ino, file->f_pos);
++ nm.name = NULL;
++ dent = ubifs_tnc_next_ent(c, &key, &nm);
++ if (IS_ERR(dent)) {
++ err = PTR_ERR(dent);
++ goto out;
++ }
++ file->f_pos = key_hash_flash(c, &dent->key);
++ file->private_data = dent;
++ }
++
++ while (1) {
++ dbg_gen("feed '%s', ino %llu, new f_pos %#x",
++ dent->name, le64_to_cpu(dent->inum),
++ key_hash_flash(c, &dent->key));
++ ubifs_assert(dent->ch.sqnum > ubifs_inode(dir)->creat_sqnum);
++
++ nm.len = le16_to_cpu(dent->nlen);
++ over = filldir(dirent, dent->name, nm.len, file->f_pos,
++ le64_to_cpu(dent->inum),
++ vfs_dent_type(dent->type));
++ if (over)
++ return 0;
++
++ /* Switch to the next entry */
++ key_read(c, &dent->key, &key);
++ nm.name = dent->name;
++ dent = ubifs_tnc_next_ent(c, &key, &nm);
++ if (IS_ERR(dent)) {
++ err = PTR_ERR(dent);
++ goto out;
++ }
++
++ kfree(file->private_data);
++ file->f_pos = key_hash_flash(c, &dent->key);
++ file->private_data = dent;
++ cond_resched();
++ }
++
++out:
++ if (err != -ENOENT) {
++ ubifs_err("cannot find next direntry, error %d", err);
++ return err;
++ }
++
++ kfree(file->private_data);
++ file->private_data = NULL;
++ file->f_pos = 2;
++ return 0;
++}
++
++/* If a directory is seeked, we have to free saved readdir() state */
++loff_t ubifs_dir_llseek(struct file *file, loff_t offset, int origin)
++{
++ kfree(file->private_data);
++ file->private_data = NULL;
++ return generic_file_llseek(file, offset, origin);
++}
++
++/* Free saved readdir() state when the directory is closed */
++static int ubifs_dir_release(struct inode *dir, struct file *file)
++{
++ kfree(file->private_data);
++ file->private_data = NULL;
++ return 0;
++}
++
++static int ubifs_link(struct dentry *old_dentry, struct inode *dir,
++ struct dentry *dentry)
++{
++ struct ubifs_info *c = dir->i_sb->s_fs_info;
++ struct inode *inode = old_dentry->d_inode;
++ struct ubifs_inode *ui = ubifs_inode(inode);
++ struct ubifs_budget_req req = { .new_dent = 1, .dirtied_ino = 1,
++ .dirtied_ino_d = ui->data_len };
++ int err, sz_change = CALC_DENT_SIZE(dentry->d_name.len);
++
++ dbg_gen("dent '%.*s' to ino %lu (nlink %d) in dir ino %lu",
++ dentry->d_name.len, dentry->d_name.name, inode->i_ino,
++ inode->i_nlink, dir->i_ino);
++
++ err = ubifs_budget_inode_op(c, dir, &req);
++ if (err)
++ return err;
++
++ inc_nlink(inode);
++ dir->i_size += sz_change;
++ inode->i_ctime = dir->i_mtime = dir->i_ctime =
++ ubifs_current_time(inode);
++
++ err = ubifs_jnl_update(c, dir, &dentry->d_name, inode, 0,
++ IS_DIRSYNC(dir), 0);
++ if (err)
++ goto out_budg;
++
++ atomic_inc(&inode->i_count);
++ d_instantiate(dentry, inode);
++ ubifs_release_ino_clean(c, dir, &req);
++ return 0;
++
++out_budg:
++ dir->i_size -= sz_change;
++ ubifs_cancel_ino_op(c, dir, &req);
++ drop_nlink(inode);
++ iput(inode);
++ return err;
++}
++
++static int ubifs_unlink(struct inode *dir, struct dentry *dentry)
++{
++ struct ubifs_info *c = dir->i_sb->s_fs_info;
++ struct inode *inode = dentry->d_inode;
++ struct ubifs_budget_req req = { .mod_dent = 1, .dirtied_ino = 1 };
++ int sz_change = CALC_DENT_SIZE(dentry->d_name.len);
++ int err, budgeted = 1;
++
++ dbg_gen("dent '%.*s' from ino %lu (nlink %d) in dir ino %lu",
++ dentry->d_name.len, dentry->d_name.name, inode->i_ino,
++ inode->i_nlink, dir->i_ino);
++
++ err = ubifs_budget_inode_op(c, dir, &req);
++ if (err) {
++ if (err != -ENOSPC)
++ return err;
++ err = 0;
++ budgeted = 0;
++ }
++
++ dir->i_size -= sz_change;
++ dir->i_mtime = dir->i_ctime = ubifs_current_time(dir);
++
++ inode->i_ctime = dir->i_ctime;
++ drop_nlink(inode);
++
++ err = ubifs_jnl_update(c, dir, &dentry->d_name, inode, 1,
++ IS_DIRSYNC(dir), 0);
++ if (err)
++ goto out_budg;
++
++ if (budgeted)
++ ubifs_release_ino_clean(c, dir, &req);
++
++ return 0;
++
++out_budg:
++ dir->i_size += sz_change;
++ inc_nlink(inode);
++ if (budgeted)
++ ubifs_cancel_ino_op(c, dir, &req);
++ return err;
++}
++
++/**
++ * check_dir_empty - check if a directory is empty or not.
++ * @c: UBIFS file-system description object
++ * @dir: VFS inode object of the directory to check
++ *
++ * This function checks if directory @dir is empty. Returns zero if the
++ * directory is empty, %-ENOTEMPTY if it is not, and other negative error codes
++ * in case of of errors.
++ */
++static int check_dir_empty(struct ubifs_info *c, struct inode *dir)
++{
++ struct qstr nm = { .name = NULL };
++ struct ubifs_dent_node *dent;
++ union ubifs_key key;
++ int err;
++
++ lowest_dent_key(c, &key, dir->i_ino);
++ dent = ubifs_tnc_next_ent(c, &key, &nm);
++ if (IS_ERR(dent)) {
++ err = PTR_ERR(dent);
++ if (err == -ENOENT)
++ err = 0;
++ } else {
++ kfree(dent);
++ err = -ENOTEMPTY;
++ }
++
++ return err;
++}
++
++static int ubifs_rmdir(struct inode *dir, struct dentry *dentry)
++{
++ struct ubifs_info *c = dir->i_sb->s_fs_info;
++ struct inode *inode = dentry->d_inode;
++ struct ubifs_budget_req req = { .mod_dent = 1, .dirtied_ino = 1 };
++ int sz_change = CALC_DENT_SIZE(dentry->d_name.len);
++ int err, budgeted = 0;
++
++ dbg_gen("directory '%.*s', ino %lu in dir ino %lu", dentry->d_name.len,
++ dentry->d_name.name, inode->i_ino, dir->i_ino);
++
++ err = check_dir_empty(c, dentry->d_inode);
++ if (err)
++ return err;
++
++ budgeted = 1;
++ err = ubifs_budget_inode_op(c, dir, &req);
++ if (err) {
++ if (err != -ENOSPC)
++ return err;
++ budgeted = 0;
++ }
++
++ dir->i_size -= sz_change;
++ dir->i_mtime = dir->i_ctime = ubifs_current_time(dir);
++ drop_nlink(dir);
++
++ inode->i_size = 0;
++ inode->i_ctime = dir->i_ctime;
++ clear_nlink(inode);
++
++ err = ubifs_jnl_update(c, dir, &dentry->d_name, inode, 1,
++ IS_DIRSYNC(dir), 0);
++ if (err)
++ goto out_budg;
++
++ if (budgeted)
++ ubifs_release_ino_clean(c, dir, &req);
++
++ return 0;
++
++out_budg:
++ dir->i_size += sz_change;
++ inc_nlink(dir);
++ inc_nlink(inode);
++ inc_nlink(inode);
++ if (budgeted)
++ ubifs_cancel_ino_op(c, dir, &req);
++ return err;
++}
++
++static int ubifs_mkdir(struct inode *dir, struct dentry *dentry, int mode)
++{
++ struct inode *inode;
++ struct ubifs_info *c = dir->i_sb->s_fs_info;
++ struct ubifs_budget_req req = { .new_ino = 1, .new_dent = 1 };
++ int err, sz_change = CALC_DENT_SIZE(dentry->d_name.len);
++
++ dbg_gen("dent '%.*s', mode %#x in dir ino %lu",
++ dentry->d_name.len, dentry->d_name.name, mode, dir->i_ino);
++
++ err = ubifs_budget_inode_op(c, dir, &req);
++ if (err)
++ return err;
++
++ inode = ubifs_new_inode(c, dir, S_IFDIR | mode);
++ if (IS_ERR(inode)) {
++ err = PTR_ERR(inode);
++ goto out_budg;
++ }
++
++ insert_inode_hash(inode);
++ inc_nlink(inode);
++
++ dir->i_mtime = dir->i_ctime = ubifs_current_time(dir);
++ dir->i_size += sz_change;
++ inc_nlink(dir);
++
++ err = ubifs_jnl_update(c, dir, &dentry->d_name, inode, 0,
++ IS_DIRSYNC(dir), 0);
++ if (err) {
++ ubifs_err("cannot create directory, error %d", err);
++ goto out_inode;
++ }
++
++ d_instantiate(dentry, inode);
++ ubifs_release_ino_clean(c, dir, &req);
++ return 0;
++
++out_inode:
++ dir->i_size -= sz_change;
++ drop_nlink(dir);
++ make_bad_inode(inode);
++ iput(inode);
++out_budg:
++ ubifs_cancel_ino_op(c, dir, &req);
++ return err;
++}
++
++static int ubifs_mknod(struct inode *dir, struct dentry *dentry,
++ int mode, dev_t rdev)
++{
++ struct inode *inode;
++ struct ubifs_info *c = dir->i_sb->s_fs_info;
++ struct ubifs_budget_req req = { .new_ino = 1, .new_dent = 1 };
++ union ubifs_dev_desc *dev = NULL;
++ int sz_change = CALC_DENT_SIZE(dentry->d_name.len);
++ int err, devlen = 0;
++
++ dbg_gen("dent '%.*s' in dir ino %lu",
++ dentry->d_name.len, dentry->d_name.name, dir->i_ino);
++
++ if (!new_valid_dev(rdev))
++ return -EINVAL;
++
++ if (S_ISBLK(mode) || S_ISCHR(mode)) {
++ dev = kmalloc(sizeof(union ubifs_dev_desc), GFP_NOFS);
++ if (!dev)
++ return -ENOMEM;
++ devlen = ubifs_encode_dev(dev, rdev);
++ }
++
++ err = ubifs_budget_inode_op(c, dir, &req);
++ if (err) {
++ kfree(dev);
++ return err;
++ }
++
++ inode = ubifs_new_inode(c, dir, mode);
++ if (IS_ERR(inode)) {
++ kfree(dev);
++ err = PTR_ERR(inode);
++ goto out_budg;
++ }
++
++ init_special_inode(inode, inode->i_mode, rdev);
++
++ inode->i_size = devlen;
++ ubifs_inode(inode)->data = dev;
++ ubifs_inode(inode)->data_len = devlen;
++
++ dir->i_size += sz_change;
++
++ err = ubifs_jnl_update(c, dir, &dentry->d_name, inode, 0,
++ IS_DIRSYNC(dir), 0);
++ if (err)
++ goto out_inode;
++
++ insert_inode_hash(inode);
++ d_instantiate(dentry, inode);
++ ubifs_release_ino_clean(c, dir, &req);
++ return 0;
++
++out_inode:
++ dir->i_size -= sz_change;
++ make_bad_inode(inode);
++ iput(inode);
++out_budg:
++ ubifs_cancel_ino_op(c, dir, &req);
++ return err;
++}
++
++static int ubifs_symlink(struct inode *dir, struct dentry *dentry,
++ const char *symname)
++{
++ struct inode *inode;
++ struct ubifs_inode *ui;
++ struct ubifs_info *c = dir->i_sb->s_fs_info;
++ int err, len = strlen(symname);
++ int sz_change = CALC_DENT_SIZE(dentry->d_name.len);
++ struct ubifs_budget_req req = { .new_ino = 1, .new_dent = 1,
++ .new_ino_d = len };
++
++ dbg_gen("dent '%.*s', target '%s' in dir ino %lu", dentry->d_name.len,
++ dentry->d_name.name, symname, dir->i_ino);
++
++ if (len > UBIFS_MAX_INO_DATA)
++ return -ENAMETOOLONG;
++
++ err = ubifs_budget_inode_op(c, dir, &req);
++ if (err)
++ return err;
++
++ inode = ubifs_new_inode(c, dir, S_IFLNK | S_IRWXUGO);
++ if (IS_ERR(inode)) {
++ err = PTR_ERR(inode);
++ goto out_budg;
++ }
++
++ ui = ubifs_inode(inode);
++ ui->data = kmalloc(len + 1, GFP_NOFS);
++ if (!ui->data) {
++ err = -ENOMEM;
++ goto out_inode;
++ }
++
++ memcpy(ui->data, symname, len);
++ ((char *)ui->data)[len] = '\0';
++ /*
++ * The terminating zero byte is not written to the flash media and it
++ * is put just to make later in-memory string processing simpler. Thus,
++ * data length is @len, not @len + %1.
++ */
++ ui->data_len = len;
++ inode->i_size = len;
++
++ dir->i_size += sz_change;
++
++ err = ubifs_jnl_update(c, dir, &dentry->d_name, inode, 0,
++ IS_DIRSYNC(dir), 0);
++ if (err)
++ goto out_dir;
++
++ insert_inode_hash(inode);
++ d_instantiate(dentry, inode);
++ ubifs_release_ino_clean(c, dir, &req);
++ return 0;
++
++out_dir:
++ dir->i_size -= sz_change;
++out_inode:
++ make_bad_inode(inode);
++ iput(inode);
++out_budg:
++ ubifs_cancel_ino_op(c, dir, &req);
++ return err;
++}
++
++static int ubifs_rename(struct inode *old_dir, struct dentry *old_dentry,
++ struct inode *new_dir, struct dentry *new_dentry)
++{
++ struct ubifs_info *c = old_dir->i_sb->s_fs_info;
++ struct inode *old_inode = old_dentry->d_inode;
++ struct inode *new_inode = new_dentry->d_inode;
++ int err, move = (new_dir != old_dir);
++ int is_dir = S_ISDIR(old_inode->i_mode);
++ int unlink = !!new_inode;
++ int dirsync = (IS_DIRSYNC(old_dir) || IS_DIRSYNC(new_dir));
++ int new_sz = CALC_DENT_SIZE(new_dentry->d_name.len);
++ int old_sz = CALC_DENT_SIZE(old_dentry->d_name.len);
++ struct ubifs_budget_req req = { .new_dent = 1, .mod_dent = 1 };
++ struct timespec time = ubifs_current_time(old_dir);
++
++ dbg_gen("dent '%.*s' ino %lu in dir ino %lu to dent '%.*s' in "
++ "dir ino %lu", old_dentry->d_name.len, old_dentry->d_name.name,
++ old_inode->i_ino, old_dir->i_ino, new_dentry->d_name.len,
++ new_dentry->d_name.name, new_dir->i_ino);
++
++ if (unlink && is_dir) {
++ err = check_dir_empty(c, new_inode);
++ if (err)
++ return err;
++ }
++
++ if (move) {
++ req.dirtied_ino = 1;
++ if (unlink) {
++ req.dirtied_ino += 2;
++ req.dirtied_ino_d = ubifs_inode(new_inode)->data_len;
++ }
++ }
++
++ /*
++ * Note, rename may write @new_dir inode if the directory entry is
++ * moved there. And if the @new_dir is dirty, we do not bother to make
++ * it clean. It could be done, but requires extra coding which does not
++ * seem to be really worth it.
++ */
++ err = ubifs_budget_inode_op(c, old_dir, &req);
++ if (err)
++ return err;
++
++ /*
++ * Like most other Unix systems, set the ctime for inodes on a
++ * rename.
++ */
++ old_inode->i_ctime = time;
++
++ /*
++ * If we moved a directory to another parent directory, decrement
++ * 'i_nlink' of the old parent. Also, update 'i_size' of the old parent
++ * as well as its [mc]time.
++ */
++ if (is_dir && move)
++ drop_nlink(old_dir);
++ old_dir->i_size -= old_sz;
++ old_dir->i_mtime = old_dir->i_ctime = time;
++ new_dir->i_mtime = new_dir->i_ctime = time;
++
++ /*
++ * If we moved a directory object to new directory, parent's 'i_nlink'
++ * should be adjusted.
++ */
++ if (move && is_dir)
++ inc_nlink(new_dir);
++
++ /*
++ * And finally, if we unlinked a direntry which happened to have the
++ * same name as the moved direntry, we have to decrement 'i_nlink' of
++ * the unlinked inode and change its ctime.
++ */
++ if (unlink) {
++ /*
++ * Directories cannot have hard-links, so if this is a
++ * directory, decrement its 'i_nlink' twice because an empty
++ * directory has 'i_nlink' 2.
++ */
++ if (is_dir)
++ drop_nlink(new_inode);
++ new_inode->i_ctime = time;
++ drop_nlink(new_inode);
++ } else
++ new_dir->i_size += new_sz;
++
++ err = ubifs_jnl_rename(c, old_dir, old_dentry, new_dir, new_dentry,
++ dirsync);
++ if (err)
++ goto out_inode;
++
++ ubifs_release_ino_clean(c, old_dir, &req);
++ return 0;
++
++out_inode:
++ if (unlink) {
++ if (is_dir)
++ inc_nlink(new_inode);
++ inc_nlink(new_inode);
++ } else
++ new_dir->i_size -= new_sz;
++ old_dir->i_size += old_sz;
++ if (is_dir && move) {
++ drop_nlink(new_dir);
++ inc_nlink(old_dir);
++ }
++ ubifs_cancel_ino_op(c, old_dir, &req);
++ return err;
++}
++
++int ubifs_getattr(struct vfsmount *mnt, struct dentry *dentry,
++ struct kstat *stat)
++{
++ struct inode *inode = dentry->d_inode;
++ loff_t size;
++
++ stat->dev = inode->i_sb->s_dev;
++ stat->ino = inode->i_ino;
++ stat->mode = inode->i_mode;
++ stat->nlink = inode->i_nlink;
++ stat->uid = inode->i_uid;
++ stat->gid = inode->i_gid;
++ stat->rdev = inode->i_rdev;
++ stat->atime = inode->i_atime;
++ stat->mtime = inode->i_mtime;
++ stat->ctime = inode->i_ctime;
++ stat->blksize = UBIFS_BLOCK_SIZE;
++ stat->size = i_size_read(inode);
++
++ spin_lock(&inode->i_lock);
++ size = ubifs_inode(inode)->xattr_size;
++ spin_unlock(&inode->i_lock);
++
++ /*
++ * Unfortunately, the 'stat()' system call was designed for block
++ * device based file systems, and it is not appropriate for UBIFS,
++ * because UBIFS does not have notion of "block". For example, it is
++ * difficult to tell how many block a directory takes - it actually
++ * takes less than 300 bytes, but we have to round it to block size,
++ * which introduces large mistake. This makes utilities like 'du' to
++ * report completely senseless numbers. This is the reason why UBIFS
++ * goes the same way as JFFS2 - it reports zero blocks for everything
++ * but regular files, which makes more sense than reporting completely
++ * wrong sizes.
++ */
++ if (S_ISREG(inode->i_mode))
++ size += stat->size;
++
++ size = ALIGN(size, UBIFS_BLOCK_SIZE);
++ /*
++ * Note, user-space expects 512-byte blocks count irrespectively of what
++ * was reported in @stat->size.
++ */
++ stat->blocks = size >> 9;
++
++ return 0;
++}
++
++struct inode_operations ubifs_dir_inode_operations = {
++ .lookup = ubifs_lookup,
++ .create = ubifs_create,
++ .link = ubifs_link,
++ .symlink = ubifs_symlink,
++ .unlink = ubifs_unlink,
++ .mkdir = ubifs_mkdir,
++ .rmdir = ubifs_rmdir,
++ .mknod = ubifs_mknod,
++ .rename = ubifs_rename,
++ .setattr = ubifs_setattr,
++ .getattr = ubifs_getattr,
++#ifdef CONFIG_UBIFS_FS_XATTR
++ .setxattr = ubifs_setxattr,
++ .getxattr = ubifs_getxattr,
++ .listxattr = ubifs_listxattr,
++ .removexattr = ubifs_removexattr,
++#endif
++};
++
++struct file_operations ubifs_dir_operations = {
++ .llseek = ubifs_dir_llseek,
++ .release = ubifs_dir_release,
++ .read = generic_read_dir,
++ .readdir = ubifs_readdir,
++ .fsync = ubifs_fsync,
++ .unlocked_ioctl = ubifs_ioctl,
++#ifdef CONFIG_COMPAT
++ .compat_ioctl = ubifs_compat_ioctl,
++#endif
++};
+diff --exclude=.git -urN linux-2.6.25.6/fs/ubifs/file.c avr32-2.6/fs/ubifs/file.c
+--- linux-2.6.25.6/fs/ubifs/file.c 1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/fs/ubifs/file.c 2008-06-12 15:09:45.364399968 +0200
+@@ -0,0 +1,960 @@
++/*
++ * This file is part of UBIFS.
++ *
++ * Copyright (C) 2006-2008 Nokia Corporation.
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published by
++ * the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but WITHOUT
++ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
++ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
++ * more details.
++ *
++ * You should have received a copy of the GNU General Public License along with
++ * this program; if not, write to the Free Software Foundation, Inc., 51
++ * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
++ *
++ * Authors: Artem Bityutskiy (Битюцкий Артём)
++ * Adrian Hunter
++ */
++
++/*
++ * This file implements VFS file and inode operations of regular files, device
++ * nodes and symlinks as well as address space operations.
++ *
++ * UBIFS uses 2 page flags: PG_private and PG_checked. PG_private is set if the
++ * page is dirty and is used for budgeting purposes - dirty pages should not be
++ * budgeted. The PG_checked flag is set if full budgeting is required for the
++ * page e.g., when it corresponds to a file hole or it is just beyond the file
++ * size. The budgeting is done in 'ubifs_write_begin()', because it is OK to
++ * fail in this function, and the budget is released in 'ubifs_write_end()'. So
++ * the PG_private and PG_checked flags carry the information about how the page
++ * was budgeted, to make it possible to release the budget properly.
++ *
++ * A thing to keep in mind: inode's 'i_mutex' is locked in most VFS operations
++ * we implement. However, this is not true for '->writepage()', which might be
++ * called with 'i_mutex' unlocked. For example, when pdflush is performing
++ * write-back, it calls 'writepage()' with unlocked 'i_mutex', although the
++ * inode has 'I_LOCK' flag in this case. At "normal" work-paths 'i_mutex' is
++ * locked in '->writepage', e.g. in "sys_write -> alloc_pages -> direct reclaim
++ * path'. So, in '->writepage()' we are only guaranteed that the page is
++ * locked.
++ *
++ * Similarly, 'i_mutex' does not have to be locked in readpage(), e.g.,
++ * readahead path does not have it locked ("sys_read -> generic_file_aio_read
++ * -> ondemand_readahead -> readpage"). In case of readahead, 'I_LOCK' flag is
++ * not set as well.
++ *
++ * This, for example means that there might be 2 concurrent '->writepage()'
++ * calls for the same inode, but different inode dirty pages.
++ */
++
++#include "ubifs.h"
++#include <linux/mount.h>
++
++static int read_block(struct inode *inode, void *addr, unsigned int block,
++ struct ubifs_data_node *dn)
++{
++ struct ubifs_info *c = inode->i_sb->s_fs_info;
++ int err, len, out_len;
++ union ubifs_key key;
++ unsigned int dlen;
++
++ data_key_init(c, &key, inode->i_ino, block);
++ err = ubifs_tnc_lookup(c, &key, dn);
++ if (err) {
++ if (err == -ENOENT)
++ /* Not found, so it must be a hole */
++ memset(addr, 0, UBIFS_BLOCK_SIZE);
++ return err;
++ }
++
++ ubifs_assert(dn->ch.sqnum > ubifs_inode(inode)->creat_sqnum);
++
++ len = le32_to_cpu(dn->size);
++ if (len <= 0 || len > UBIFS_BLOCK_SIZE)
++ goto dump;
++
++ dlen = le32_to_cpu(dn->ch.len) - UBIFS_DATA_NODE_SZ;
++ out_len = UBIFS_BLOCK_SIZE;
++ err = ubifs_decompress(&dn->data, dlen, addr, &out_len,
++ le16_to_cpu(dn->compr_type));
++ if (err || len != out_len)
++ goto dump;
++
++ /*
++ * Data length can be less than a full block, even for blocks that are
++ * not the last in the file (e.g., as a result of making a hole and
++ * appending data). Ensure that the remainder is zeroed out.
++ */
++ if (len < UBIFS_BLOCK_SIZE)
++ memset(addr + len, 0, UBIFS_BLOCK_SIZE - len);
++
++ return 0;
++
++dump:
++ ubifs_err("bad data node (block %u, inode %lu)",
++ block, inode->i_ino);
++ dbg_dump_node(c, dn);
++ return -EINVAL;
++}
++
++static int do_readpage(struct page *page)
++{
++ void *addr;
++ int err = 0, i;
++ unsigned int block, beyond;
++ struct ubifs_data_node *dn;
++ struct inode *inode = page->mapping->host;
++ loff_t i_size = i_size_read(inode);
++
++ dbg_gen("ino %lu, pg %lu, i_size %lld, flags %#lx",
++ inode->i_ino, page->index, i_size, page->flags);
++ ubifs_assert(!PageChecked(page));
++ ubifs_assert(!PagePrivate(page));
++
++ addr = kmap(page);
++
++ block = page->index << UBIFS_BLOCKS_PER_PAGE_SHIFT;
++ beyond = (i_size + UBIFS_BLOCK_SIZE - 1) >> UBIFS_BLOCK_SHIFT;
++ if (block >= beyond) {
++ /* Reading beyond inode */
++ SetPageChecked(page);
++ memset(addr, 0, PAGE_CACHE_SIZE);
++ goto out;
++ }
++
++ dn = kmalloc(UBIFS_MAX_DATA_NODE_SZ, GFP_NOFS);
++ if (!dn) {
++ err = -ENOMEM;
++ goto error;
++ }
++
++ i = 0;
++ while (1) {
++ int ret;
++
++ if (block >= beyond) {
++ /* Reading beyond inode */
++ err = -ENOENT;
++ memset(addr, 0, UBIFS_BLOCK_SIZE);
++ } else {
++ ret = read_block(inode, addr, block, dn);
++ if (ret) {
++ err = ret;
++ if (err != -ENOENT)
++ break;
++ }
++ }
++ if (++i >= UBIFS_BLOCKS_PER_PAGE)
++ break;
++ block += 1;
++ addr += UBIFS_BLOCK_SIZE;
++ }
++ if (err) {
++ if (err == -ENOENT) {
++ /* Not found, so it must be a hole */
++ SetPageChecked(page);
++ dbg_gen("hole");
++ goto out_free;
++ }
++ ubifs_err("cannot read page %lu of inode %lu, error %d",
++ page->index, inode->i_ino, err);
++ goto error;
++ }
++
++out_free:
++ kfree(dn);
++out:
++ SetPageUptodate(page);
++ ClearPageError(page);
++ flush_dcache_page(page);
++ kunmap(page);
++ return 0;
++
++error:
++ kfree(dn);
++ ClearPageUptodate(page);
++ SetPageError(page);
++ flush_dcache_page(page);
++ kunmap(page);
++ return err;
++}
++
++static int ubifs_write_begin(struct file *file, struct address_space *mapping,
++ loff_t pos, unsigned len, unsigned flags,
++ struct page **pagep, void **fsdata)
++{
++ struct inode *inode = mapping->host;
++ struct ubifs_info *c = inode->i_sb->s_fs_info;
++ pgoff_t index = pos >> PAGE_CACHE_SHIFT;
++ struct ubifs_budget_req req = { .new_page = 1 };
++ loff_t i_size = i_size_read(inode);
++ int uninitialized_var(err);
++ struct page *page;
++
++ ubifs_assert(!(inode->i_sb->s_flags & MS_RDONLY));
++
++ if (unlikely(c->ro_media))
++ return -EROFS;
++
++ /*
++ * We are about to have a page of data written and we have to budget for
++ * this. The very important point here is that we have to budget before
++ * locking the page, because budgeting may force write-back, which
++ * would wait on locked pages and deadlock if we had the page locked.
++ *
++ * At this point we do not know anything about the page of data we are
++ * going to change, so assume the biggest budget (i.e., assume that
++ * this is a new page of data and it does not override an older page of
++ * data in the inode). Later the budget will be amended if this is not
++ * true.
++ */
++ if (pos + len > i_size)
++ /*
++ * We are writing beyond the file which means we are going to
++ * change inode size and make the inode dirty. And in turn,
++ * this means we have to budget for making the inode dirty.
++ *
++ * Note, if the inode is already dirty,
++ * 'ubifs_budget_inode_op()' will not allocate any budget,
++ * but will just lock the @budg_mutex of the inode to prevent
++ * it from becoming clean before we have changed its size,
++ * which is going to happen in 'ubifs_write_end()'.
++ */
++ err = ubifs_budget_inode_op(c, inode, &req);
++ else
++ /*
++ * The inode is not going to be marked as dirty by this write
++ * operation, do not budget for this.
++ */
++ err = ubifs_budget_space(c, &req);
++ if (unlikely(err))
++ return err;
++
++ page = __grab_cache_page(mapping, index);
++ if (unlikely(!page)) {
++ err = -ENOMEM;
++ goto out_release;
++ }
++
++ if (!PageUptodate(page)) {
++ /*
++ * The page is not loaded from the flash and has to be loaded
++ * unless we are writing all of it.
++ */
++ if (!(pos & PAGE_CACHE_MASK) && len == PAGE_CACHE_SIZE)
++ /*
++ * Set the PG_checked flag to make the further code
++ * assume the page is new.
++ */
++ SetPageChecked(page);
++ else {
++ err = do_readpage(page);
++ if (err)
++ goto out_unlock;
++ }
++
++ SetPageUptodate(page);
++ ClearPageError(page);
++ }
++
++ if (PagePrivate(page))
++ /*
++ * The page is dirty, which means it was budgeted twice:
++ * o first time the budget was allocated by the task which
++ * made the page dirty and set the PG_private flag;
++ * o and then we budgeted for it for the second time at the
++ * very beginning of this function.
++ *
++ * So what we have to do is to release the page budget we
++ * allocated.
++ *
++ * Note, the page write operation may change the inode length,
++ * which makes it dirty and means the budget should be
++ * allocated. This was done above in the "pos + len > i_size"
++ * case. If this was done, we do not free the the inode budget,
++ * because we cannot as we are really going to mark it dirty in
++ * the 'ubifs_write_end()' function.
++ */
++ ubifs_release_new_page_budget(c);
++ else if (!PageChecked(page))
++ /*
++ * The page is not new, which means we are changing the page
++ * which already exists on the media. This means that changing
++ * the page does not make the amount of indexing information
++ * larger, and this part of the budget which we have already
++ * acquired may be released.
++ */
++ ubifs_convert_page_budget(c);
++
++ *pagep = page;
++ return 0;
++
++out_unlock:
++ unlock_page(page);
++ page_cache_release(page);
++out_release:
++ if (pos + len > i_size)
++ ubifs_cancel_ino_op(c, inode, &req);
++ else
++ ubifs_release_budget(c, &req);
++ return err;
++}
++
++static int ubifs_write_end(struct file *file, struct address_space *mapping,
++ loff_t pos, unsigned len, unsigned copied,
++ struct page *page, void *fsdata)
++{
++ struct inode *inode = mapping->host;
++ struct ubifs_inode *ui = ubifs_inode(inode);
++ struct ubifs_info *c = inode->i_sb->s_fs_info;
++ loff_t i_size = i_size_read(inode);
++
++ dbg_gen("ino %lu, pos %llu, pg %lu, len %u, copied %d, i_size %lld",
++ inode->i_ino, pos, page->index, len, copied, i_size);
++
++ if (unlikely(copied < len && len == PAGE_CACHE_SIZE)) {
++ /*
++ * VFS copied less data to the page that it intended and
++ * declared in its '->write_begin()' call via the @len
++ * argument. If the page was not up-to-date, and @len was
++ * @PAGE_CACHE_SIZE, the 'ubifs_write_begin()' function did
++ * not load it from the media (for optimization reasons). This
++ * means that part of the page contains garbage. So read the
++ * page now.
++ */
++ dbg_gen("copied %d instead of %d, read page and repeat",
++ copied, len);
++
++ if (pos + len > i_size)
++ /* See a comment below about this hacky unlock */
++ mutex_unlock(&ui->budg_mutex);
++
++ copied = do_readpage(page);
++
++ /*
++ * Return 0 to force VFS to repeat the whole operation, or the
++ * error code if 'do_readpage()' failed.
++ */
++ goto out;
++ }
++
++ if (!PagePrivate(page)) {
++ SetPagePrivate(page);
++ atomic_long_inc(&c->dirty_pg_cnt);
++ __set_page_dirty_nobuffers(page);
++ }
++
++ if (pos + len > i_size) {
++ i_size_write(inode, pos + len);
++
++ /*
++ * Note, we do not set @I_DIRTY_PAGES (which means that the
++ * inode has dirty pages), this has been done in
++ * '__set_page_dirty_nobuffers()'.
++ */
++ mark_inode_dirty_sync(inode);
++
++ /*
++ * The inode has been marked dirty, unlock it. This is a bit
++ * hacky because normally we would have to call
++ * 'ubifs_release_ino_dirty()'. But we know there is nothing
++ * to release because page's budget will be released in
++ * 'ubifs_write_page()' and inode's budget will be released in
++ * 'ubifs_write_inode()', so just unlock the inode here for
++ * optimization.
++ */
++ mutex_unlock(&ui->budg_mutex);
++ }
++
++out:
++ unlock_page(page);
++ page_cache_release(page);
++ return copied;
++}
++
++static int ubifs_readpage(struct file *file, struct page *page)
++{
++ do_readpage(page);
++ unlock_page(page);
++ return 0;
++}
++
++/**
++ * release_existing_page_budget - release budget of an existing page.
++ * @c: UBIFS file-system description object
++ *
++ * This is a helper function which releases budget corresponding to the budget
++ * of changing one one page of data which already exists on the flash media.
++ *
++ * This function was not moved to "budget.c" because there is only one user.
++ */
++static void release_existing_page_budget(struct ubifs_info *c)
++{
++ struct ubifs_budget_req req = { .dd_growth = c->page_budget};
++
++ ubifs_release_budget(c, &req);
++}
++
++static int do_writepage(struct page *page, int len)
++{
++ int err = 0, i, blen;
++ unsigned int block;
++ void *addr;
++ union ubifs_key key;
++ struct inode *inode = page->mapping->host;
++ struct ubifs_info *c = inode->i_sb->s_fs_info;
++
++ /* Update radix tree tags */
++ set_page_writeback(page);
++
++ addr = kmap(page);
++
++ block = page->index << UBIFS_BLOCKS_PER_PAGE_SHIFT;
++ i = 0;
++ while (len) {
++ blen = min_t(int, len, UBIFS_BLOCK_SIZE);
++ data_key_init(c, &key, inode->i_ino, block);
++ err = ubifs_jnl_write_data(c, inode, &key, addr, blen);
++ if (err)
++ break;
++ if (++i >= UBIFS_BLOCKS_PER_PAGE)
++ break;
++ block += 1;
++ addr += blen;
++ len -= blen;
++ }
++ if (err) {
++ SetPageError(page);
++ ubifs_err("cannot write page %lu of inode %lu, error %d",
++ page->index, inode->i_ino, err);
++ ubifs_ro_mode(c, err);
++ }
++
++ ubifs_assert(PagePrivate(page));
++ if (PageChecked(page))
++ ubifs_release_new_page_budget(c);
++ else
++ release_existing_page_budget(c);
++
++ atomic_long_dec(&c->dirty_pg_cnt);
++ ClearPagePrivate(page);
++ ClearPageChecked(page);
++
++ kunmap(page);
++ unlock_page(page);
++ end_page_writeback(page);
++
++ return err;
++}
++
++static int ubifs_writepage(struct page *page, struct writeback_control *wbc)
++{
++ struct inode *inode = page->mapping->host;
++ loff_t i_size = i_size_read(inode);
++ pgoff_t end_index = i_size >> PAGE_CACHE_SHIFT;
++ int len;
++ void *kaddr;
++
++ dbg_gen("ino %lu, pg %lu, pg flags %#lx",
++ inode->i_ino, page->index, page->flags);
++ ubifs_assert(PagePrivate(page));
++
++ /* Is the page fully inside i_size? */
++ if (page->index < end_index)
++ return do_writepage(page, PAGE_CACHE_SIZE);
++
++ /* Is the page fully outside i_size? (truncate in progress) */
++ len = i_size & (PAGE_CACHE_SIZE - 1);
++ if (page->index >= end_index + 1 || !len) {
++ unlock_page(page);
++ return 0;
++ }
++
++ /*
++ * The page straddles i_size. It must be zeroed out on each and every
++ * writepage invocation because it may be mmapped. "A file is mapped
++ * in multiples of the page size. For a file that is not a multiple of
++ * the page size, the remaining memory is zeroed when mapped, and
++ * writes to that region are not written out to the file."
++ */
++ kaddr = kmap_atomic(page, KM_USER0);
++ memset(kaddr + len, 0, PAGE_CACHE_SIZE - len);
++ flush_dcache_page(page);
++ kunmap_atomic(kaddr, KM_USER0);
++
++ return do_writepage(page, len);
++}
++
++static int ubifs_trunc(struct inode *inode, loff_t new_size)
++{
++ loff_t old_size;
++ int err;
++
++ dbg_gen("ino %lu, size %lld -> %lld",
++ inode->i_ino, inode->i_size, new_size);
++ old_size = inode->i_size;
++
++ err = vmtruncate(inode, new_size);
++ if (err)
++ return err;
++
++ if (new_size < old_size) {
++ struct ubifs_info *c = inode->i_sb->s_fs_info;
++ int offset = new_size & (UBIFS_BLOCK_SIZE - 1);
++
++ if (offset) {
++ pgoff_t index = new_size >> PAGE_CACHE_SHIFT;
++ struct page *page;
++
++ page = find_lock_page(inode->i_mapping, index);
++ if (page) {
++ if (PageDirty(page)) {
++ ubifs_assert(PagePrivate(page));
++
++ clear_page_dirty_for_io(page);
++ if (UBIFS_BLOCKS_PER_PAGE_SHIFT)
++ offset = new_size &
++ (PAGE_CACHE_SIZE - 1);
++ err = do_writepage(page, offset);
++ page_cache_release(page);
++ if (err)
++ return err;
++ /*
++ * We could now tell ubifs_jnl_truncate
++ * not to read the last block.
++ */
++ } else {
++ /*
++ * We could 'kmap()' the page and
++ * pass the data to ubifs_jnl_truncate
++ * to save it from having to read it.
++ */
++ unlock_page(page);
++ page_cache_release(page);
++ }
++ }
++ }
++ err = ubifs_jnl_truncate(c, inode->i_ino, old_size, new_size);
++ if (err)
++ return err;
++ }
++
++ return 0;
++}
++
++int ubifs_setattr(struct dentry *dentry, struct iattr *attr)
++{
++ unsigned int ia_valid = attr->ia_valid;
++ struct inode *inode = dentry->d_inode;
++ struct ubifs_info *c = inode->i_sb->s_fs_info;
++ struct ubifs_budget_req req;
++ int truncation, err = 0;
++
++ dbg_gen("ino %lu, ia_valid %#x", inode->i_ino, ia_valid);
++ err = inode_change_ok(inode, attr);
++ if (err)
++ return err;
++
++ memset(&req, 0, sizeof(struct ubifs_budget_req));
++
++ /*
++ * If this is truncation, and we do not truncate on a block boundary,
++ * budget for changing one data block, because the last block will be
++ * re-written.
++ */
++ truncation = (ia_valid & ATTR_SIZE) && attr->ia_size != inode->i_size;
++ if (truncation && attr->ia_size < inode->i_size &&
++ (attr->ia_size & (UBIFS_BLOCK_SIZE - 1)))
++ req.dirtied_page = 1;
++
++ err = ubifs_budget_inode_op(c, inode, &req);
++ if (err)
++ return err;
++
++ if (truncation) {
++ err = ubifs_trunc(inode, attr->ia_size);
++ if (err) {
++ ubifs_cancel_ino_op(c, inode, &req);
++ return err;
++ }
++
++ inode->i_mtime = inode->i_ctime = ubifs_current_time(inode);
++ }
++
++ if (ia_valid & ATTR_UID)
++ inode->i_uid = attr->ia_uid;
++ if (ia_valid & ATTR_GID)
++ inode->i_gid = attr->ia_gid;
++ if (ia_valid & ATTR_ATIME)
++ inode->i_atime = timespec_trunc(attr->ia_atime,
++ inode->i_sb->s_time_gran);
++ if (ia_valid & ATTR_MTIME)
++ inode->i_mtime = timespec_trunc(attr->ia_mtime,
++ inode->i_sb->s_time_gran);
++ if (ia_valid & ATTR_CTIME)
++ inode->i_ctime = timespec_trunc(attr->ia_ctime,
++ inode->i_sb->s_time_gran);
++ if (ia_valid & ATTR_MODE) {
++ umode_t mode = attr->ia_mode;
++
++ if (!in_group_p(inode->i_gid) && !capable(CAP_FSETID))
++ mode &= ~S_ISGID;
++ inode->i_mode = mode;
++ }
++
++ mark_inode_dirty_sync(inode);
++ ubifs_release_ino_dirty(c, inode, &req);
++
++ if (req.dirtied_page) {
++ /*
++ * Truncation code does not make the reenacted page dirty, it
++ * just changes it on journal level, so we have to release page
++ * change budget.
++ */
++ memset(&req, 0, sizeof(struct ubifs_budget_req));
++ req.dd_growth = c->page_budget;
++ ubifs_release_budget(c, &req);
++ }
++
++ if (IS_SYNC(inode))
++ err = write_inode_now(inode, 1);
++
++ return err;
++}
++
++static void ubifs_invalidatepage(struct page *page, unsigned long offset)
++{
++ struct inode *inode = page->mapping->host;
++ struct ubifs_info *c = inode->i_sb->s_fs_info;
++ struct ubifs_budget_req req;
++
++ ubifs_assert(PagePrivate(page));
++ if (offset)
++ /* Partial page remains dirty */
++ return;
++
++ memset(&req, 0, sizeof(struct ubifs_budget_req));
++ if (PageChecked(page)) {
++ req.new_page = 1;
++ req.idx_growth = -1;
++ req.data_growth = c->page_budget;
++ } else
++ req.dd_growth = c->page_budget;
++ ubifs_release_budget(c, &req);
++
++ atomic_long_dec(&c->dirty_pg_cnt);
++ ClearPagePrivate(page);
++ ClearPageChecked(page);
++}
++
++static void *ubifs_follow_link(struct dentry *dentry, struct nameidata *nd)
++{
++ struct ubifs_inode *ui = ubifs_inode(dentry->d_inode);
++
++ nd_set_link(nd, ui->data);
++ return NULL;
++}
++
++int ubifs_fsync(struct file *file, struct dentry *dentry, int datasync)
++{
++ struct inode *inode = dentry->d_inode;
++ struct ubifs_info *c = inode->i_sb->s_fs_info;
++ int err;
++
++ dbg_gen("syncing inode %lu", inode->i_ino);
++
++ /* Synchronize the inode and dirty pages */
++ err = write_inode_now(inode, 1);
++ if (err)
++ return err;
++
++ /*
++ * Some data related to this inode may still sit in a write-buffer.
++ * Flush them.
++ */
++ err = ubifs_sync_wbufs_by_inodes(c, &inode, 1);
++ if (err)
++ return err;
++
++ return 0;
++}
++
++/**
++ * mctime_update_needed - check if mtime or ctime update is needed.
++ * @inode: the inode to do the check for
++ * @now: current time
++ *
++ * This helper function checks if the inode mtime/ctime should be updated or
++ * not. If current values of the time-stamps are within the UBIFS inode time
++ * granularity, they are not updated. This is an optimization.
++ */
++static inline int mctime_update_needed(const struct inode *inode,
++ const struct timespec *now)
++{
++ if (!timespec_equal(&inode->i_mtime, now) ||
++ !timespec_equal(&inode->i_ctime, now))
++ return 1;
++ return 0;
++}
++
++/**
++ * update_ctime - update mtime and ctime of an inode.
++ * @c: UBIFS file-system description object
++ * @inode: inode to update
++ *
++ * This function updates mtime and ctime of the inode if it is not equivalent to
++ * current time. Returns zero in case of success and a negative error code in
++ * case of failure.
++ */
++static int update_mctime(struct ubifs_info *c, struct inode *inode)
++{
++ struct timespec now = ubifs_current_time(inode);
++
++ if (mctime_update_needed(inode, &now)) {
++ struct ubifs_budget_req req;
++ int err;
++
++ memset(&req, 0, sizeof(struct ubifs_budget_req));
++ err = ubifs_budget_inode_op(c, inode, &req);
++ if (err)
++ return err;
++
++ inode->i_mtime = inode->i_ctime = now;
++ mark_inode_dirty_sync(inode);
++ mutex_unlock(&ubifs_inode(inode)->budg_mutex);
++ }
++
++ return 0;
++}
++
++static ssize_t ubifs_write(struct file *file, const char __user *buf,
++ size_t len, loff_t *ppos)
++{
++ int err;
++ ssize_t ret;
++ struct inode *inode = file->f_mapping->host;
++ struct ubifs_info *c = inode->i_sb->s_fs_info;
++
++ err = update_mctime(c, inode);
++ if (err)
++ return err;
++
++ ret = do_sync_write(file, buf, len, ppos);
++ if (ret < 0)
++ return ret;
++
++ if (ret > 0 && IS_SYNC(inode)) {
++ err = ubifs_sync_wbufs_by_inodes(c, &inode, 1);
++ if (err)
++ return err;
++ }
++
++ return ret;
++}
++
++static ssize_t ubifs_aio_write(struct kiocb *iocb, const struct iovec *iov,
++ unsigned long nr_segs, loff_t pos)
++{
++ int err;
++ ssize_t ret;
++ struct inode *inode = iocb->ki_filp->f_mapping->host;
++ struct ubifs_info *c = inode->i_sb->s_fs_info;
++
++ err = update_mctime(c, inode);
++ if (err)
++ return err;
++
++ ret = generic_file_aio_write(iocb, iov, nr_segs, pos);
++ if (ret < 0)
++ return ret;
++
++ if (ret > 0 && IS_SYNC(inode)) {
++ err = ubifs_sync_wbufs_by_inodes(c, &inode, 1);
++ if (err)
++ return err;
++ }
++
++ return ret;
++}
++
++static int ubifs_set_page_dirty(struct page *page)
++{
++ int ret;
++
++ ret = __set_page_dirty_nobuffers(page);
++ /*
++ * An attempt to dirty a page without budgeting for it - should not
++ * happen.
++ */
++ ubifs_assert(ret == 0);
++ return ret;
++}
++
++static int ubifs_releasepage(struct page *page, gfp_t unused_gfp_flags)
++{
++ /*
++ * An attempt to release a dirty page without budgeting for it - should
++ * not happen.
++ */
++ if (PageWriteback(page))
++ return 0;
++ ubifs_assert(PagePrivate(page));
++ ubifs_assert(0);
++ ClearPagePrivate(page);
++ ClearPageChecked(page);
++ return 1;
++}
++
++/*
++ * mmap()d file has taken write protection fault and is being made
++ * writable. UBIFS must ensure page is budgeted for.
++ */
++static int ubifs_vm_page_mkwrite(struct vm_area_struct *vma, struct page *page)
++{
++ struct inode *inode = vma->vm_file->f_path.dentry->d_inode;
++ struct ubifs_info *c = inode->i_sb->s_fs_info;
++ struct timespec now = ubifs_current_time(inode);
++ struct ubifs_budget_req req = { .new_page = 1 };
++ int err, update_time;
++
++ dbg_gen("ino %lu, pg %lu, i_size %lld", inode->i_ino, page->index,
++ i_size_read(inode));
++ ubifs_assert(!(inode->i_sb->s_flags & MS_RDONLY));
++
++ if (unlikely(c->ro_media))
++ return -EROFS;
++
++ /*
++ * We have not locked @page so far so we may budget for changing the
++ * page. Note, we cannot do this after we locked the page, because
++ * budgeting may cause write-back which would cause deadlock.
++ *
++ * At the moment we do not know whether the page is dirty or not, so we
++ * assume that it is not and budget for a new page. We could look at
++ * the @PG_private flag and figure this out, but we may race with write
++ * back and the page state may change by the time we lock it, so this
++ * would need additional care. We do not bother with this at the
++ * moment, although it might be good idea to do. Instead, we allocate
++ * budget for a new page and amend it later on if the page was in fact
++ * dirty.
++ *
++ * The budgeting-related logic of this function is similar to what we
++ * do in 'ubifs_write_begin()' and 'ubifs_write_end()'. Glance there
++ * for more comments.
++ */
++ if (mctime_update_needed(inode, &now)) {
++ /*
++ * We have to change inode time stamp which requires extra
++ * budgeting.
++ */
++ update_time = 1;
++ err = ubifs_budget_inode_op(c, inode, &req);
++ } else {
++ update_time = 0;
++ err = ubifs_budget_space(c, &req);
++ }
++ if (unlikely(err)) {
++ if (err == -ENOSPC)
++ ubifs_warn("out of space for mmapped file "
++ "(inode number %lu)", inode->i_ino);
++ return err;
++ }
++
++ lock_page(page);
++ if (unlikely(page->mapping != inode->i_mapping ||
++ page_offset(page) > i_size_read(inode))) {
++ /* Page got truncated out from underneath us */
++ err = -EINVAL;
++ goto out_unlock;
++ }
++
++ if (PagePrivate(page))
++ ubifs_release_new_page_budget(c);
++ else {
++ if (!PageChecked(page))
++ ubifs_convert_page_budget(c);
++ SetPagePrivate(page);
++ atomic_long_inc(&c->dirty_pg_cnt);
++ __set_page_dirty_nobuffers(page);
++ }
++
++ if (update_time) {
++ inode->i_mtime = inode->i_ctime = now;
++ mark_inode_dirty_sync(inode);
++ mutex_unlock(&ubifs_inode(inode)->budg_mutex);
++ }
++
++ unlock_page(page);
++ return 0;
++
++out_unlock:
++ unlock_page(page);
++ if (update_time)
++ ubifs_cancel_ino_op(c, inode, &req);
++ else
++ ubifs_release_budget(c, &req);
++ return err;
++}
++
++struct vm_operations_struct ubifs_file_vm_ops = {
++ .fault = filemap_fault,
++ .page_mkwrite = ubifs_vm_page_mkwrite,
++};
++
++static int ubifs_file_mmap(struct file *file, struct vm_area_struct *vma)
++{
++ int err;
++
++ /* 'generic_file_mmap()' takes care of NOMMU case */
++ err = generic_file_mmap(file, vma);
++ if (err)
++ return err;
++ vma->vm_ops = &ubifs_file_vm_ops;
++ return 0;
++}
++
++struct address_space_operations ubifs_file_address_operations = {
++ .readpage = ubifs_readpage,
++ .writepage = ubifs_writepage,
++ .write_begin = ubifs_write_begin,
++ .write_end = ubifs_write_end,
++ .invalidatepage = ubifs_invalidatepage,
++ .set_page_dirty = ubifs_set_page_dirty,
++ .releasepage = ubifs_releasepage,
++};
++
++struct inode_operations ubifs_file_inode_operations = {
++ .setattr = ubifs_setattr,
++ .getattr = ubifs_getattr,
++#ifdef CONFIG_UBIFS_FS_XATTR
++ .setxattr = ubifs_setxattr,
++ .getxattr = ubifs_getxattr,
++ .listxattr = ubifs_listxattr,
++ .removexattr = ubifs_removexattr,
++#endif
++};
++
++struct inode_operations ubifs_symlink_inode_operations = {
++ .readlink = generic_readlink,
++ .follow_link = ubifs_follow_link,
++ .setattr = ubifs_setattr,
++ .getattr = ubifs_getattr,
++};
++
++struct file_operations ubifs_file_operations = {
++ .llseek = generic_file_llseek,
++ .read = do_sync_read,
++ .write = ubifs_write,
++ .aio_read = generic_file_aio_read,
++ .aio_write = ubifs_aio_write,
++ .mmap = ubifs_file_mmap,
++ .fsync = ubifs_fsync,
++ .unlocked_ioctl = ubifs_ioctl,
++#ifdef CONFIG_COMPAT
++ .compat_ioctl = ubifs_compat_ioctl,
++#endif
++};
+diff --exclude=.git -urN linux-2.6.25.6/fs/ubifs/find.c avr32-2.6/fs/ubifs/find.c
+--- linux-2.6.25.6/fs/ubifs/find.c 1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/fs/ubifs/find.c 2008-06-12 15:09:45.364399968 +0200
+@@ -0,0 +1,977 @@
++/*
++ * This file is part of UBIFS.
++ *
++ * Copyright (C) 2006-2008 Nokia Corporation.
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published by
++ * the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but WITHOUT
++ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
++ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
++ * more details.
++ *
++ * You should have received a copy of the GNU General Public License along with
++ * this program; if not, write to the Free Software Foundation, Inc., 51
++ * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
++ *
++ * Authors: Artem Bityutskiy (Битюцкий Артём)
++ * Adrian Hunter
++ */
++
++/*
++ * This file contains functions for finding LEBs for various purposes e.g.
++ * garbage collection. In general, lprops category heaps and lists are used
++ * for fast access, falling back on scanning the LPT as a last resort.
++ */
++
++#include <linux/sort.h>
++#include "ubifs.h"
++
++/**
++ * struct scan_data - data provided to scan callback functions
++ * @min_space: minimum number of bytes for which to scan
++ * @pick_free: whether it is OK to scan for empty LEBs
++ * @lnum: LEB number found is returned here
++ * @exclude_index: whether to exclude index LEBs
++ */
++struct scan_data {
++ int min_space;
++ int pick_free;
++ int lnum;
++ int exclude_index;
++};
++
++/**
++ * valuable - determine whether LEB properties are valuable.
++ * @c: the UBIFS file-system description object
++ * @lprops: LEB properties
++ *
++ * This function return %1 if the LEB properties should be added to the LEB
++ * properties tree in memory. Otherwise %0 is returned.
++ */
++static int valuable(struct ubifs_info *c, const struct ubifs_lprops *lprops)
++{
++ int n, cat = lprops->flags & LPROPS_CAT_MASK;
++ struct ubifs_lpt_heap *heap;
++
++ switch (cat) {
++ case LPROPS_DIRTY:
++ case LPROPS_DIRTY_IDX:
++ case LPROPS_FREE:
++ heap = &c->lpt_heap[cat - 1];
++ if (heap->cnt < heap->max_cnt)
++ return 1;
++ if (lprops->free + lprops->dirty >= c->dark_wm)
++ return 1;
++ return 0;
++ case LPROPS_EMPTY:
++ n = c->lst.empty_lebs + c->freeable_cnt -
++ c->lst.taken_empty_lebs;
++ if (n < c->lsave_cnt)
++ return 1;
++ return 0;
++ case LPROPS_FREEABLE:
++ return 1;
++ case LPROPS_FRDI_IDX:
++ return 1;
++ }
++ return 0;
++}
++
++/**
++ * scan_for_dirty_cb - dirty space scan callback.
++ * @c: the UBIFS file-system description object
++ * @lprops: LEB properties to scan
++ * @in_tree: whether the LEB properties are in main memory
++ * @data: information passed to and from the caller of the scan
++ *
++ * This function returns a code that indicates whether the scan should continue
++ * (%LPT_SCAN_CONTINUE), whether the LEB properties should be added to the tree
++ * in main memory (%LPT_SCAN_ADD), or whether the scan should stop
++ * (%LPT_SCAN_STOP).
++ */
++static int scan_for_dirty_cb(struct ubifs_info *c,
++ const struct ubifs_lprops *lprops, int in_tree,
++ struct scan_data *data)
++{
++ int ret = LPT_SCAN_CONTINUE;
++
++ /* Exclude LEBs that are currently in use */
++ if (lprops->flags & LPROPS_TAKEN)
++ return LPT_SCAN_CONTINUE;
++ /* Determine whether to add these LEB properties to the tree */
++ if (!in_tree && valuable(c, lprops))
++ ret |= LPT_SCAN_ADD;
++ /* Exclude LEBs with too little space */
++ if (lprops->free + lprops->dirty < data->min_space)
++ return ret;
++ /* If specified, exclude index LEBs */
++ if (data->exclude_index && lprops->flags & LPROPS_INDEX)
++ return ret;
++ /* If specified, exclude empty or freeable LEBs */
++ if (lprops->free + lprops->dirty == c->leb_size) {
++ if (!data->pick_free)
++ return ret;
++ /* Exclude LEBs with too little dirty space (unless it is empty) */
++ } else if (lprops->dirty < c->dead_wm)
++ return ret;
++ /* Finally we found space */
++ data->lnum = lprops->lnum;
++ return LPT_SCAN_ADD | LPT_SCAN_STOP;
++}
++
++/**
++ * scan_for_dirty - find a data LEB with free space.
++ * @c: the UBIFS file-system description object
++ * @min_space: minimum amount free plus dirty space the returned LEB has to
++ * have
++ * @pick_free: if it is OK to return a free or freeable LEB
++ * @exclude_index: whether to exclude index LEBs
++ *
++ * This function returns a pointer to the LEB properties found or a negative
++ * error code.
++ */
++static const struct ubifs_lprops *scan_for_dirty(struct ubifs_info *c,
++ int min_space, int pick_free,
++ int exclude_index)
++{
++ const struct ubifs_lprops *lprops;
++ struct ubifs_lpt_heap *heap;
++ struct scan_data data;
++ int err, i;
++
++ /* There may be an LEB with enough dirty space on the free heap */
++ heap = &c->lpt_heap[LPROPS_FREE - 1];
++ for (i = 0; i < heap->cnt; i++) {
++ lprops = heap->arr[i];
++ if (lprops->free + lprops->dirty < min_space)
++ continue;
++ if (lprops->dirty < c->dead_wm)
++ continue;
++ return lprops;
++ }
++ /*
++ * A LEB may have fallen off of the bottom of the dirty heap, and ended
++ * up as uncategorized even though it has enough dirty space for us now,
++ * so check the uncategorized list. N.B. neither empty nor freeable LEBs
++ * can end up as uncategorized because they are kept on lists not
++ * finite-sized heaps.
++ */
++ list_for_each_entry(lprops, &c->uncat_list, list) {
++ if (lprops->flags & LPROPS_TAKEN)
++ continue;
++ if (lprops->free + lprops->dirty < min_space)
++ continue;
++ if (exclude_index && (lprops->flags & LPROPS_INDEX))
++ continue;
++ if (lprops->dirty < c->dead_wm)
++ continue;
++ return lprops;
++ }
++ /* We have looked everywhere in main memory, now scan the flash */
++ if (c->pnodes_have >= c->pnode_cnt)
++ /* All pnodes are in memory, so skip scan */
++ return ERR_PTR(-ENOSPC);
++ data.min_space = min_space;
++ data.pick_free = pick_free;
++ data.lnum = -1;
++ data.exclude_index = exclude_index;
++ err = ubifs_lpt_scan_nolock(c, -1, c->lscan_lnum,
++ (ubifs_lpt_scan_callback)scan_for_dirty_cb,
++ &data);
++ if (err)
++ return ERR_PTR(err);
++ ubifs_assert(data.lnum >= c->main_first && data.lnum < c->leb_cnt);
++ c->lscan_lnum = data.lnum;
++ lprops = ubifs_lpt_lookup_dirty(c, data.lnum);
++ if (IS_ERR(lprops))
++ return lprops;
++ ubifs_assert(lprops->lnum == data.lnum);
++ ubifs_assert(lprops->free + lprops->dirty >= min_space);
++ ubifs_assert(lprops->dirty >= c->dead_wm ||
++ (pick_free &&
++ lprops->free + lprops->dirty == c->leb_size));
++ ubifs_assert(!(lprops->flags & LPROPS_TAKEN));
++ ubifs_assert(!(lprops->flags & LPROPS_INDEX));
++ return lprops;
++}
++
++/**
++ * ubifs_find_dirty_leb - find a dirty LEB for the Garbage Collector.
++ * @c: the UBIFS file-system description object
++ * @ret_lp: LEB properties are returned here on exit
++ * @min_space: minimum amount free plus dirty space the returned LEB has to
++ * have
++ * @pick_free: controls whether it is OK to pick empty or index LEBs
++ *
++ * This function tries to find a dirty logical eraseblock which has at least
++ * @min_space free and dirty space. It prefers to take an LEB from the dirty or
++ * dirty index heap, and it falls-back to LPT scanning if the heaps are empty
++ * or do not have an LEB which satisfies the @min_space criteria.
++ *
++ * Note:
++ * o LEBs which have less than dead watermark of dirty space are never picked
++ * by this function;
++ *
++ * Returns zero and the LEB properties of
++ * found dirty LEB in case of success, %-ENOSPC if no dirty LEB was found and a
++ * negative error code in case of other failures. The returned LEB is marked as
++ * "taken".
++ *
++ * The additional @pick_free argument controls if this function has to return a
++ * free or freeable LEB if one is present. For example, GC must to set it to %1,
++ * when called from the journal space reservation function, because the
++ * appearance of free space may coincide with the loss of enough dirty space
++ * for GC to succeed anyway.
++ *
++ * In contrast, if the Garbage Collector is called from budgeting, it should
++ * just make free space, not return LEBs which are already free or freeable.
++ *
++ * In addition @pick_free is set to %2 by the recovery process in order to
++ * recover gc_lnum in which case an index LEB must not be returned.
++ */
++int ubifs_find_dirty_leb(struct ubifs_info *c, struct ubifs_lprops *ret_lp,
++ int min_space, int pick_free)
++{
++ int err = 0, sum, exclude_index = pick_free == 2 ? 1 : 0;
++ const struct ubifs_lprops *lp = NULL, *idx_lp = NULL;
++ struct ubifs_lpt_heap *heap, *idx_heap;
++
++ ubifs_get_lprops(c);
++
++ if (pick_free) {
++ int lebs, rsvd_idx_lebs = 0;
++
++ spin_lock(&c->space_lock);
++ lebs = c->lst.empty_lebs;
++ lebs += c->freeable_cnt - c->lst.taken_empty_lebs;
++
++ /*
++ * Note, the index may consume more LEBs than have been reserved
++ * for it. It is OK because it might be consolidated by GC.
++ * But if the index takes fewer LEBs than it is reserved for it,
++ * this function must avoid picking those reserved LEBs.
++ */
++ if (c->min_idx_lebs >= c->lst.idx_lebs) {
++ rsvd_idx_lebs = c->min_idx_lebs - c->lst.idx_lebs;
++ exclude_index = 1;
++ }
++ spin_unlock(&c->space_lock);
++
++ /* Check if there are enough free LEBs for the index */
++ if (rsvd_idx_lebs < lebs) {
++ /* OK, try to find an empty LEB */
++ lp = ubifs_fast_find_empty(c);
++ if (lp)
++ goto found;
++
++ /* Or a freeable LEB */
++ lp = ubifs_fast_find_freeable(c);
++ if (lp)
++ goto found;
++ } else
++ /*
++ * We cannot pick free/freeable LEBs in the below code.
++ */
++ pick_free = 0;
++ } else {
++ spin_lock(&c->space_lock);
++ exclude_index = (c->min_idx_lebs >= c->lst.idx_lebs);
++ spin_unlock(&c->space_lock);
++ }
++
++ /* Look on the dirty and dirty index heaps */
++ heap = &c->lpt_heap[LPROPS_DIRTY - 1];
++ idx_heap = &c->lpt_heap[LPROPS_DIRTY_IDX - 1];
++
++ if (idx_heap->cnt && !exclude_index) {
++ idx_lp = idx_heap->arr[0];
++ sum = idx_lp->free + idx_lp->dirty;
++ /*
++ * Since we reserve twice as more space for the index than it
++ * actually takes, it does not make sense to pick indexing LEBs
++ * with less than half LEB of dirty space.
++ */
++ if (sum < min_space || sum < c->half_leb_size)
++ idx_lp = NULL;
++ }
++
++ if (heap->cnt) {
++ lp = heap->arr[0];
++ if (lp->dirty + lp->free < min_space)
++ lp = NULL;
++ }
++
++ /* Pick the LEB with most space */
++ if (idx_lp && lp) {
++ if (idx_lp->free + idx_lp->dirty >= lp->free + lp->dirty)
++ lp = idx_lp;
++ } else if (idx_lp && !lp)
++ lp = idx_lp;
++
++ if (lp) {
++ ubifs_assert(lp->dirty >= c->dead_wm);
++ goto found;
++ }
++
++ /* Did not find a dirty LEB on the dirty heaps, have to scan */
++ dbg_find("scanning LPT for a dirty LEB");
++ lp = scan_for_dirty(c, min_space, pick_free, exclude_index);
++ if (IS_ERR(lp)) {
++ err = PTR_ERR(lp);
++ goto out;
++ }
++ ubifs_assert(lp->dirty >= c->dead_wm ||
++ (pick_free && lp->free + lp->dirty == c->leb_size));
++
++found:
++ dbg_find("found LEB %d, free %d, dirty %d, flags %#x",
++ lp->lnum, lp->free, lp->dirty, lp->flags);
++
++ lp = ubifs_change_lp(c, lp, LPROPS_NC, LPROPS_NC,
++ lp->flags | LPROPS_TAKEN, 0);
++ if (IS_ERR(lp)) {
++ err = PTR_ERR(lp);
++ goto out;
++ }
++
++ memcpy(ret_lp, lp, sizeof(struct ubifs_lprops));
++
++out:
++ ubifs_release_lprops(c);
++ return err;
++}
++
++/**
++ * scan_for_free_cb - free space scan callback.
++ * @c: the UBIFS file-system description object
++ * @lprops: LEB properties to scan
++ * @in_tree: whether the LEB properties are in main memory
++ * @data: information passed to and from the caller of the scan
++ *
++ * This function returns a code that indicates whether the scan should continue
++ * (%LPT_SCAN_CONTINUE), whether the LEB properties should be added to the tree
++ * in main memory (%LPT_SCAN_ADD), or whether the scan should stop
++ * (%LPT_SCAN_STOP).
++ */
++static int scan_for_free_cb(struct ubifs_info *c,
++ const struct ubifs_lprops *lprops, int in_tree,
++ struct scan_data *data)
++{
++ int ret = LPT_SCAN_CONTINUE;
++
++ /* Exclude LEBs that are currently in use */
++ if (lprops->flags & LPROPS_TAKEN)
++ return LPT_SCAN_CONTINUE;
++ /* Determine whether to add these LEB properties to the tree */
++ if (!in_tree && valuable(c, lprops))
++ ret |= LPT_SCAN_ADD;
++ /* Exclude index LEBs */
++ if (lprops->flags & LPROPS_INDEX)
++ return ret;
++ /* Exclude LEBs with too little space */
++ if (lprops->free < data->min_space)
++ return ret;
++ /* If specified, exclude empty LEBs */
++ if (!data->pick_free && lprops->free == c->leb_size)
++ return ret;
++ /*
++ * LEBs that have only free and dirty space must not be allocated
++ * because they may have been unmapped already or they may have data
++ * that is obsolete only because of nodes that are still sitting in a
++ * wbuf.
++ */
++ if (lprops->free + lprops->dirty == c->leb_size && lprops->dirty > 0)
++ return ret;
++ /* Finally we found space */
++ data->lnum = lprops->lnum;
++ return LPT_SCAN_ADD | LPT_SCAN_STOP;
++}
++
++/**
++ * do_find_free_space - find a data LEB with free space.
++ * @c: the UBIFS file-system description object
++ * @min_space: minimum amount of free space required
++ * @pick_free: whether it is OK to scan for empty LEBs
++ * @squeeze: whether to try to find space in a non-empty LEB first
++ *
++ * This function returns a pointer to the LEB properties found or a negative
++ * error code.
++ */
++static
++const struct ubifs_lprops *do_find_free_space(struct ubifs_info *c,
++ int min_space, int pick_free,
++ int squeeze)
++{
++ const struct ubifs_lprops *lprops;
++ struct ubifs_lpt_heap *heap;
++ struct scan_data data;
++ int err, i;
++
++ if (squeeze) {
++ lprops = ubifs_fast_find_free(c);
++ if (lprops && lprops->free >= min_space)
++ return lprops;
++ }
++ if (pick_free) {
++ lprops = ubifs_fast_find_empty(c);
++ if (lprops)
++ return lprops;
++ }
++ if (!squeeze) {
++ lprops = ubifs_fast_find_free(c);
++ if (lprops && lprops->free >= min_space)
++ return lprops;
++ }
++ /* There may be an LEB with enough free space on the dirty heap */
++ heap = &c->lpt_heap[LPROPS_DIRTY - 1];
++ for (i = 0; i < heap->cnt; i++) {
++ lprops = heap->arr[i];
++ if (lprops->free >= min_space)
++ return lprops;
++ }
++ /*
++ * A LEB may have fallen off of the bottom of the free heap, and ended
++ * up as uncategorized even though it has enough free space for us now,
++ * so check the uncategorized list. N.B. neither empty nor freeable LEBs
++ * can end up as uncategorized because they are kept on lists not
++ * finite-sized heaps.
++ */
++ list_for_each_entry(lprops, &c->uncat_list, list) {
++ if (lprops->flags & LPROPS_TAKEN)
++ continue;
++ if (lprops->flags & LPROPS_INDEX)
++ continue;
++ if (lprops->free >= min_space)
++ return lprops;
++ }
++ /* We have looked everywhere in main memory, now scan the flash */
++ if (c->pnodes_have >= c->pnode_cnt)
++ /* All pnodes are in memory, so skip scan */
++ return ERR_PTR(-ENOSPC);
++ data.min_space = min_space;
++ data.pick_free = pick_free;
++ data.lnum = -1;
++ err = ubifs_lpt_scan_nolock(c, -1, c->lscan_lnum,
++ (ubifs_lpt_scan_callback)scan_for_free_cb,
++ &data);
++ if (err)
++ return ERR_PTR(err);
++ ubifs_assert(data.lnum >= c->main_first && data.lnum < c->leb_cnt);
++ c->lscan_lnum = data.lnum;
++ lprops = ubifs_lpt_lookup_dirty(c, data.lnum);
++ if (IS_ERR(lprops))
++ return lprops;
++ ubifs_assert(lprops->lnum == data.lnum);
++ ubifs_assert(lprops->free >= min_space);
++ ubifs_assert(!(lprops->flags & LPROPS_TAKEN));
++ ubifs_assert(!(lprops->flags & LPROPS_INDEX));
++ return lprops;
++}
++
++/**
++ * ubifs_find_free_space - find a data LEB with free space.
++ * @c: the UBIFS file-system description object
++ * @min_space: minimum amount of required free space
++ * @free: contains amount of free space in the LEB on exit
++ * @squeeze: whether to try to find space in a non-empty LEB first
++ *
++ * This function looks for an LEB with at least @min_space bytes of free space.
++ * It tries to find an empty LEB if possible. If no empty LEBs are available,
++ * this function searches for a non-empty data LEB. The returned LEB is marked
++ * as "taken".
++ *
++ * This function returns found LEB number in case of success, %-ENOSPC if it
++ * failed to find a LEB with @min_space bytes of free space and other a negative
++ * error codes in case of failure.
++ */
++int ubifs_find_free_space(struct ubifs_info *c, int min_space, int *free,
++ int squeeze)
++{
++ const struct ubifs_lprops *lprops;
++ int lebs, rsvd_idx_lebs, pick_free = 0, err, lnum, flags;
++
++ dbg_find("min_space %d", min_space);
++ ubifs_assert(min_space > 0 && min_space <= c->dark_wm);
++
++ ubifs_get_lprops(c);
++
++ /* Check if there are enough empty LEBs for commit */
++ spin_lock(&c->space_lock);
++ if (c->min_idx_lebs > c->lst.idx_lebs)
++ rsvd_idx_lebs = c->min_idx_lebs - c->lst.idx_lebs;
++ else
++ rsvd_idx_lebs = 0;
++ lebs = c->lst.empty_lebs + c->freeable_cnt + c->idx_gc_cnt -
++ c->lst.taken_empty_lebs;
++ ubifs_assert(lebs + c->lst.idx_lebs >= c->min_idx_lebs);
++ if (rsvd_idx_lebs < lebs)
++ /*
++ * OK to allocate an empty LEB, but we still don't want to go
++ * looking for one if there aren't any.
++ */
++ if (c->lst.empty_lebs - c->lst.taken_empty_lebs > 0) {
++ pick_free = 1;
++ /*
++ * Because we release the space lock, we must account
++ * for this allocation here. After the LEB properties
++ * flags have been updated, we subtract one. Note, the
++ * result of this is that lprops also decreases
++ * @taken_empty_lebs in 'ubifs_change_lp()', so it is
++ * off by one for a short period of time which may
++ * introduce a small disturbance to budgeting
++ * calculations, but this is harmless because at the
++ * worst case this would make the budgeting subsystem
++ * be more pessimistic than needed.
++ *
++ * Fundamentally, this is about serialization of the
++ * budgeting and lprops subsystems. We could make the
++ * @space_lock a mutex and avoid dropping it before
++ * calling 'ubifs_change_lp()', but mutex is more
++ * heavy-weight, and we want budgeting to be as fast as
++ * possible.
++ */
++ c->lst.taken_empty_lebs += 1;
++ }
++ spin_unlock(&c->space_lock);
++
++ lprops = do_find_free_space(c, min_space, pick_free, squeeze);
++ if (IS_ERR(lprops)) {
++ err = PTR_ERR(lprops);
++ goto out;
++ }
++
++ lnum = lprops->lnum;
++ flags = lprops->flags | LPROPS_TAKEN;
++
++ lprops = ubifs_change_lp(c, lprops, LPROPS_NC, LPROPS_NC, flags, 0);
++ if (IS_ERR(lprops)) {
++ err = PTR_ERR(lprops);
++ goto out;
++ }
++
++ if (pick_free) {
++ spin_lock(&c->space_lock);
++ c->lst.taken_empty_lebs -= 1;
++ spin_unlock(&c->space_lock);
++ }
++
++ *free = lprops->free;
++ ubifs_release_lprops(c);
++
++ if (*free == c->leb_size) {
++ /*
++ * Ensure that empty LEBs have been unmapped. They may not have
++ * been, for example, because of an unclean unmount. Also
++ * LEBs that were freeable LEBs (free + dirty == leb_size) will
++ * not have been unmapped.
++ */
++ err = ubifs_leb_unmap(c, lnum);
++ if (err)
++ return err;
++ }
++
++ dbg_find("found LEB %d, free %d", lnum, *free);
++ ubifs_assert(*free >= min_space);
++ return lnum;
++
++out:
++ if (pick_free) {
++ spin_lock(&c->space_lock);
++ c->lst.taken_empty_lebs -= 1;
++ spin_unlock(&c->space_lock);
++ }
++ ubifs_release_lprops(c);
++ return err;
++}
++
++/**
++ * scan_for_idx_cb - callback used by the scan for a free LEB for the index.
++ * @c: the UBIFS file-system description object
++ * @lprops: LEB properties to scan
++ * @in_tree: whether the LEB properties are in main memory
++ * @data: information passed to and from the caller of the scan
++ *
++ * This function returns a code that indicates whether the scan should continue
++ * (%LPT_SCAN_CONTINUE), whether the LEB properties should be added to the tree
++ * in main memory (%LPT_SCAN_ADD), or whether the scan should stop
++ * (%LPT_SCAN_STOP).
++ */
++static int scan_for_idx_cb(struct ubifs_info *c,
++ const struct ubifs_lprops *lprops, int in_tree,
++ struct scan_data *data)
++{
++ int ret = LPT_SCAN_CONTINUE;
++
++ /* Exclude LEBs that are currently in use */
++ if (lprops->flags & LPROPS_TAKEN)
++ return LPT_SCAN_CONTINUE;
++ /* Determine whether to add these LEB properties to the tree */
++ if (!in_tree && valuable(c, lprops))
++ ret |= LPT_SCAN_ADD;
++ /* Exclude index LEBS */
++ if (lprops->flags & LPROPS_INDEX)
++ return ret;
++ /* Exclude LEBs that cannot be made empty */
++ if (lprops->free + lprops->dirty != c->leb_size)
++ return ret;
++ /*
++ * We are allocating for the index so it is safe to allocate LEBs with
++ * only free and dirty space, because write buffers are sync'd at commit
++ * start.
++ */
++ data->lnum = lprops->lnum;
++ return LPT_SCAN_ADD | LPT_SCAN_STOP;
++}
++
++/**
++ * scan_for_leb_for_idx - scan for a free LEB for the index.
++ * @c: the UBIFS file-system description object
++ */
++static const struct ubifs_lprops *scan_for_leb_for_idx(struct ubifs_info *c)
++{
++ struct ubifs_lprops *lprops;
++ struct scan_data data;
++ int err;
++
++ data.lnum = -1;
++ err = ubifs_lpt_scan_nolock(c, -1, c->lscan_lnum,
++ (ubifs_lpt_scan_callback)scan_for_idx_cb,
++ &data);
++ if (err)
++ return ERR_PTR(err);
++ ubifs_assert(data.lnum >= c->main_first && data.lnum < c->leb_cnt);
++ c->lscan_lnum = data.lnum;
++ lprops = ubifs_lpt_lookup_dirty(c, data.lnum);
++ if (IS_ERR(lprops))
++ return lprops;
++ ubifs_assert(lprops->lnum == data.lnum);
++ ubifs_assert(lprops->free + lprops->dirty == c->leb_size);
++ ubifs_assert(!(lprops->flags & LPROPS_TAKEN));
++ ubifs_assert(!(lprops->flags & LPROPS_INDEX));
++ return lprops;
++}
++
++/**
++ * ubifs_find_free_leb_for_idx - find a free LEB for the index.
++ * @c: the UBIFS file-system description object
++ *
++ * This function looks for a free LEB and returns that LEB number. The returned
++ * LEB is marked as "taken", "index".
++ *
++ * Only empty LEBs are allocated. This is for two reasons. First, the commit
++ * calculates the number of LEBs to allocate based on the assumption that they
++ * will be empty. Secondly, free space at the end of an index LEB is not
++ * guaranteed to be empty because it may have been used by the in-the-gaps
++ * method prior to an unclean unmount.
++ *
++ * If no LEB is found %-ENOSPC is returned. For other failures another negative
++ * error code is returned.
++ */
++int ubifs_find_free_leb_for_idx(struct ubifs_info *c)
++{
++ const struct ubifs_lprops *lprops;
++ int lnum = -1, err, flags;
++
++ ubifs_get_lprops(c);
++
++ lprops = ubifs_fast_find_empty(c);
++ if (!lprops) {
++ lprops = ubifs_fast_find_freeable(c);
++ if (!lprops) {
++ ubifs_assert(c->freeable_cnt == 0);
++ if (c->lst.empty_lebs - c->lst.taken_empty_lebs > 0) {
++ lprops = scan_for_leb_for_idx(c);
++ if (IS_ERR(lprops)) {
++ err = PTR_ERR(lprops);
++ goto out;
++ }
++ }
++ }
++ }
++
++ if (!lprops) {
++ err = -ENOSPC;
++ goto out;
++ }
++
++ lnum = lprops->lnum;
++
++ dbg_find("found LEB %d, free %d, dirty %d, flags %#x",
++ lnum, lprops->free, lprops->dirty, lprops->flags);
++
++ flags = lprops->flags | LPROPS_TAKEN | LPROPS_INDEX;
++ lprops = ubifs_change_lp(c, lprops, c->leb_size, 0, flags, 0);
++ if (IS_ERR(lprops)) {
++ err = PTR_ERR(lprops);
++ goto out;
++ }
++
++ ubifs_release_lprops(c);
++
++ /*
++ * Ensure that empty LEBs have been unmapped. They may not have been,
++ * for example, because of an unclean unmount. Also LEBs that were
++ * freeable LEBs (free + dirty == leb_size) will not have been unmapped.
++ */
++ err = ubifs_leb_unmap(c, lnum);
++ if (err) {
++ ubifs_change_one_lp(c, lnum, LPROPS_NC, LPROPS_NC, 0,
++ LPROPS_TAKEN | LPROPS_INDEX, 0);
++ return err;
++ }
++
++ return lnum;
++
++out:
++ ubifs_release_lprops(c);
++ return err;
++}
++
++static int cmp_dirty_idx(const struct ubifs_lprops **a,
++ const struct ubifs_lprops **b)
++{
++ const struct ubifs_lprops *lpa = *a;
++ const struct ubifs_lprops *lpb = *b;
++
++ return lpa->dirty + lpa->free - lpb->dirty - lpb->free;
++}
++
++static void swap_dirty_idx(struct ubifs_lprops **a, struct ubifs_lprops **b,
++ int size)
++{
++ struct ubifs_lprops *t = *a;
++
++ *a = *b;
++ *b = t;
++}
++
++/**
++ * ubifs_save_dirty_idx_lnums - save an array of the most dirty index LEB nos.
++ * @c: the UBIFS file-system description object
++ *
++ * This function is called each commit to create an array of LEB numbers of
++ * dirty index LEBs sorted in order of dirty and free space. This is used by
++ * the in-the-gaps method of TNC commit.
++ */
++int ubifs_save_dirty_idx_lnums(struct ubifs_info *c)
++{
++ int i;
++
++ ubifs_get_lprops(c);
++ /* Copy the LPROPS_DIRTY_IDX heap */
++ c->dirty_idx.cnt = c->lpt_heap[LPROPS_DIRTY_IDX - 1].cnt;
++ memcpy(c->dirty_idx.arr, c->lpt_heap[LPROPS_DIRTY_IDX - 1].arr,
++ sizeof(void *) * c->dirty_idx.cnt);
++ /* Sort it so that the dirtiest is now at the end */
++ sort(c->dirty_idx.arr, c->dirty_idx.cnt, sizeof(void *),
++ (int (*)(const void *, const void *))cmp_dirty_idx,
++ (void (*)(void *, void *, int))swap_dirty_idx);
++ dbg_find("found %d dirty index LEBs", c->dirty_idx.cnt);
++ if (c->dirty_idx.cnt)
++ dbg_find("dirtiest index LEB is %d with dirty %d and free %d",
++ c->dirty_idx.arr[c->dirty_idx.cnt - 1]->lnum,
++ c->dirty_idx.arr[c->dirty_idx.cnt - 1]->dirty,
++ c->dirty_idx.arr[c->dirty_idx.cnt - 1]->free);
++ /* Replace the lprops pointers with LEB numbers */
++ for (i = 0; i < c->dirty_idx.cnt; i++)
++ c->dirty_idx.arr[i] = (void *)(size_t)c->dirty_idx.arr[i]->lnum;
++ ubifs_release_lprops(c);
++ return 0;
++}
++
++/**
++ * scan_dirty_idx_cb - callback used by the scan for a dirty index LEB.
++ * @c: the UBIFS file-system description object
++ * @lprops: LEB properties to scan
++ * @in_tree: whether the LEB properties are in main memory
++ * @data: information passed to and from the caller of the scan
++ *
++ * This function returns a code that indicates whether the scan should continue
++ * (%LPT_SCAN_CONTINUE), whether the LEB properties should be added to the tree
++ * in main memory (%LPT_SCAN_ADD), or whether the scan should stop
++ * (%LPT_SCAN_STOP).
++ */
++static int scan_dirty_idx_cb(struct ubifs_info *c,
++ const struct ubifs_lprops *lprops, int in_tree,
++ struct scan_data *data)
++{
++ int ret = LPT_SCAN_CONTINUE;
++
++ /* Exclude LEBs that are currently in use */
++ if (lprops->flags & LPROPS_TAKEN)
++ return LPT_SCAN_CONTINUE;
++ /* Determine whether to add these LEB properties to the tree */
++ if (!in_tree && valuable(c, lprops))
++ ret |= LPT_SCAN_ADD;
++ /* Exclude non-index LEBs */
++ if (!(lprops->flags & LPROPS_INDEX))
++ return ret;
++ /* Exclude LEBs with too little space */
++ if (lprops->free + lprops->dirty < c->min_idx_node_sz)
++ return ret;
++ /* Finally we found space */
++ data->lnum = lprops->lnum;
++ return LPT_SCAN_ADD | LPT_SCAN_STOP;
++}
++
++/**
++ * find_dirty_idx_leb - find a dirty index LEB.
++ * @c: the UBIFS file-system description object
++ *
++ * This function returns LEB number upon success and a negative error code upon
++ * failure. In particular, -ENOSPC is returned if a dirty index LEB is not
++ * found.
++ *
++ * Note that this function scans the entire LPT but it is called very rarely.
++ */
++static int find_dirty_idx_leb(struct ubifs_info *c)
++{
++ const struct ubifs_lprops *lprops;
++ struct ubifs_lpt_heap *heap;
++ struct scan_data data;
++ int err, i, ret;
++
++ /* Check all structures in memory first */
++ data.lnum = -1;
++ heap = &c->lpt_heap[LPROPS_DIRTY_IDX - 1];
++ for (i = 0; i < heap->cnt; i++) {
++ lprops = heap->arr[i];
++ ret = scan_dirty_idx_cb(c, lprops, 1, &data);
++ if (ret & LPT_SCAN_STOP)
++ goto found;
++ }
++ list_for_each_entry(lprops, &c->frdi_idx_list, list) {
++ ret = scan_dirty_idx_cb(c, lprops, 1, &data);
++ if (ret & LPT_SCAN_STOP)
++ goto found;
++ }
++ list_for_each_entry(lprops, &c->uncat_list, list) {
++ ret = scan_dirty_idx_cb(c, lprops, 1, &data);
++ if (ret & LPT_SCAN_STOP)
++ goto found;
++ }
++ if (c->pnodes_have >= c->pnode_cnt)
++ /* All pnodes are in memory, so skip scan */
++ return -ENOSPC;
++ err = ubifs_lpt_scan_nolock(c, -1, c->lscan_lnum,
++ (ubifs_lpt_scan_callback)scan_dirty_idx_cb,
++ &data);
++ if (err)
++ return err;
++found:
++ ubifs_assert(data.lnum >= c->main_first && data.lnum < c->leb_cnt);
++ c->lscan_lnum = data.lnum;
++ lprops = ubifs_lpt_lookup_dirty(c, data.lnum);
++ if (IS_ERR(lprops))
++ return PTR_ERR(lprops);
++ ubifs_assert(lprops->lnum == data.lnum);
++ ubifs_assert(lprops->free + lprops->dirty >= c->min_idx_node_sz);
++ ubifs_assert(!(lprops->flags & LPROPS_TAKEN));
++ ubifs_assert((lprops->flags & LPROPS_INDEX));
++
++ dbg_find("found dirty LEB %d, free %d, dirty %d, flags %#x",
++ lprops->lnum, lprops->free, lprops->dirty, lprops->flags);
++
++ lprops = ubifs_change_lp(c, lprops, LPROPS_NC, LPROPS_NC,
++ lprops->flags | LPROPS_TAKEN, 0);
++ if (IS_ERR(lprops))
++ return PTR_ERR(lprops);
++
++ return lprops->lnum;
++}
++
++/**
++ * get_idx_gc_leb - try to get a LEB number from trivial GC.
++ * @c: the UBIFS file-system description object
++ */
++static int get_idx_gc_leb(struct ubifs_info *c)
++{
++ const struct ubifs_lprops *lp;
++ int err, lnum;
++
++ err = ubifs_get_idx_gc_leb(c);
++ if (err < 0)
++ return err;
++ lnum = err;
++ /*
++ * The LEB was due to be unmapped after the commit but
++ * it is needed now for this commit.
++ */
++ lp = ubifs_lpt_lookup_dirty(c, lnum);
++ if (unlikely(IS_ERR(lp)))
++ return PTR_ERR(lp);
++ lp = ubifs_change_lp(c, lp, LPROPS_NC, LPROPS_NC,
++ lp->flags | LPROPS_INDEX, -1);
++ if (unlikely(IS_ERR(lp)))
++ return PTR_ERR(lp);
++ dbg_find("LEB %d, dirty %d and free %d flags %#x",
++ lp->lnum, lp->dirty, lp->free, lp->flags);
++ return lnum;
++}
++
++/**
++ * find_dirtiest_idx_leb - find dirtiest index LEB from dirtiest array.
++ * @c: the UBIFS file-system description object
++ */
++static int find_dirtiest_idx_leb(struct ubifs_info *c)
++{
++ const struct ubifs_lprops *lp;
++ int lnum;
++
++ while (1) {
++ if (!c->dirty_idx.cnt)
++ return -ENOSPC;
++ /* The lprops pointers were replaced by LEB numbers */
++ lnum = (size_t)c->dirty_idx.arr[--c->dirty_idx.cnt];
++ lp = ubifs_lpt_lookup(c, lnum);
++ if (IS_ERR(lp))
++ return PTR_ERR(lp);
++ if ((lp->flags & LPROPS_TAKEN) || !(lp->flags & LPROPS_INDEX))
++ continue;
++ lp = ubifs_change_lp(c, lp, LPROPS_NC, LPROPS_NC,
++ lp->flags | LPROPS_TAKEN, 0);
++ if (IS_ERR(lp))
++ return PTR_ERR(lp);
++ break;
++ }
++ dbg_find("LEB %d, dirty %d and free %d flags %#x", lp->lnum, lp->dirty,
++ lp->free, lp->flags);
++ ubifs_assert(lp->flags | LPROPS_TAKEN);
++ ubifs_assert(lp->flags | LPROPS_INDEX);
++ return lnum;
++}
++
++/**
++ * ubifs_find_dirty_idx_leb - try to find dirtiest index LEB as at last commit.
++ * @c: the UBIFS file-system description object
++ *
++ * This function attempts to find an untaken index LEB with the most free and
++ * dirty space that can be used without overwriting index nodes that were in the
++ * last index committed.
++ */
++int ubifs_find_dirty_idx_leb(struct ubifs_info *c)
++{
++ int err;
++
++ ubifs_get_lprops(c);
++
++ /*
++ * We made an array of the dirtiest index LEB numbers as at the start of
++ * last commit. Try that array first.
++ */
++ err = find_dirtiest_idx_leb(c);
++
++ /* Next try scanning the entire LPT */
++ if (err == -ENOSPC)
++ err = find_dirty_idx_leb(c);
++
++ /* Finally take any index LEBs awaiting trivial GC */
++ if (err == -ENOSPC)
++ err = get_idx_gc_leb(c);
++
++ ubifs_release_lprops(c);
++ return err;
++}
+diff --exclude=.git -urN linux-2.6.25.6/fs/ubifs/gc.c avr32-2.6/fs/ubifs/gc.c
+--- linux-2.6.25.6/fs/ubifs/gc.c 1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/fs/ubifs/gc.c 2008-06-12 15:09:45.367815766 +0200
+@@ -0,0 +1,762 @@
++/*
++ * This file is part of UBIFS.
++ *
++ * Copyright (C) 2006-2008 Nokia Corporation.
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published by
++ * the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but WITHOUT
++ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
++ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
++ * more details.
++ *
++ * You should have received a copy of the GNU General Public License along with
++ * this program; if not, write to the Free Software Foundation, Inc., 51
++ * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
++ *
++ * Authors: Adrian Hunter
++ * Artem Bityutskiy (Битюцкий Артём)
++ */
++
++/*
++ * This file implements garbage collection. The procedure for garbage collection
++ * is different depending on whether a LEB as an index LEB (contains index
++ * nodes) or not. For non-index LEBs, garbage collection finds a LEB which
++ * contains a lot of dirty space (obsolete nodes), and copies the non-obsolete
++ * nodes to the journal, at which point the garbage-collected LEB is free to be
++ * reused. For index LEBs, garbage collection marks the non-obsolete index nodes
++ * dirty in the TNC, and after the next commit, the garbage-collected LEB is
++ * to be reused. Garbage collection will cause the number of dirty index nodes
++ * to grow, however sufficient space is reserved for the index to ensure the
++ * commit will never run out of space.
++ */
++
++#include <linux/pagemap.h>
++#include "ubifs.h"
++
++/*
++ * GC tries to optimize the way it fit nodes to available space, and it sorts
++ * nodes a little. The below constants are watermarks which define "large",
++ * "medium", and "small" nodes.
++ */
++#define MEDIUM_NODE_WM (UBIFS_BLOCK_SIZE / 4)
++#define SMALL_NODE_WM UBIFS_MAX_DENT_NODE_SZ
++
++/*
++ * GC may need to move more then one LEB to make progress. The below constants
++ * define "soft" and "hard" limits on the number of LEBs the garbage collector
++ * may move.
++ */
++#define SOFT_LEBS_LIMIT 4
++#define HARD_LEBS_LIMIT 32
++
++/**
++ * switch_gc_head - switch the garbage collection journal head.
++ * @c: UBIFS file-system description object
++ * @buf: buffer to write
++ * @len: length of the buffer to write
++ * @lnum: LEB number written is returned here
++ * @offs: offset written is returned here
++ *
++ * This function switch the GC head to the next LEB which is reserved in
++ * @c->gc_lnum. Returns %0 in case of success, %-EAGAIN if commit is required,
++ * and other negative error code in case of failures.
++ */
++static int switch_gc_head(struct ubifs_info *c)
++{
++ int err, gc_lnum = c->gc_lnum;
++ struct ubifs_wbuf *wbuf = &c->jheads[GCHD].wbuf;
++
++ ubifs_assert(gc_lnum != -1);
++ dbg_gc("switch GC head from LEB %d:%d to LEB %d (waste %d bytes)",
++ wbuf->lnum, wbuf->offs + wbuf->used, gc_lnum,
++ c->leb_size - wbuf->offs - wbuf->used);
++
++ err = ubifs_wbuf_sync_nolock(wbuf);
++ if (err)
++ return err;
++
++ /*
++ * The GC write-buffer was synchronized, we may safely unmap
++ * 'c->gc_lnum'.
++ */
++ err = ubifs_leb_unmap(c, gc_lnum);
++ if (err)
++ return err;
++
++ err = ubifs_add_bud_to_log(c, GCHD, gc_lnum, 0);
++ if (err)
++ return err;
++
++ c->gc_lnum = -1;
++ err = ubifs_wbuf_seek_nolock(wbuf, gc_lnum, 0, UBI_LONGTERM);
++ return err;
++}
++
++/**
++ * move_nodes - move nodes.
++ * @c: UBIFS file-system description object
++ * @sleb: describes nodes to move
++ *
++ * This function moves valid nodes from data LEB described by @sleb to the GC
++ * journal head. The obsolete nodes are dropped.
++ *
++ * When moving nodes we have to deal with classical bin-packing problem: the
++ * space in the current GC journal head LEB and in @c->gc_lnum are the "bins",
++ * where the nodes in the @sleb->nodes list are the elements which should be
++ * fit optimally to the bins. This function uses the "first fit decreasing"
++ * strategy, although it does not really sort the nodes but just split them on
++ * 3 classes - large, medium, and small, so they are roughly sorted.
++ *
++ * This function returns zero in case of success, %-EAGAIN if commit is
++ * required, and other negative error codes in case of other failures.
++ */
++static int move_nodes(struct ubifs_info *c, struct ubifs_scan_leb *sleb)
++{
++ struct ubifs_scan_node *snod, *tmp;
++ struct list_head large, medium, small;
++ struct ubifs_wbuf *wbuf = &c->jheads[GCHD].wbuf;
++ int avail, err, min = INT_MAX;
++
++ INIT_LIST_HEAD(&large);
++ INIT_LIST_HEAD(&medium);
++ INIT_LIST_HEAD(&small);
++
++ list_for_each_entry_safe(snod, tmp, &sleb->nodes, list) {
++ struct list_head *lst;
++
++ ubifs_assert(snod->type != UBIFS_IDX_NODE);
++ ubifs_assert(snod->type != UBIFS_REF_NODE);
++ ubifs_assert(snod->type != UBIFS_CS_NODE);
++
++ err = ubifs_tnc_has_node(c, &snod->key, 0, sleb->lnum,
++ snod->offs, 0);
++ if (err < 0)
++ goto out;
++
++ lst = &snod->list;
++ list_del(lst);
++ if (!err) {
++ /* The node is obsolete, remove it from the list */
++ kfree(snod);
++ continue;
++ }
++
++ /*
++ * Sort the list of nodes so that large nodes go first, and
++ * small nodes go last.
++ */
++ if (snod->len > MEDIUM_NODE_WM)
++ list_add(lst, &large);
++ else if (snod->len > SMALL_NODE_WM)
++ list_add(lst, &medium);
++ else
++ list_add(lst, &small);
++
++ /* And find the smallest node */
++ if (snod->len < min)
++ min = snod->len;
++ }
++
++ /*
++ * Join the tree lists so that we'd have one roughly sorted list
++ * ('large' will be the head of the joined list).
++ */
++ list_splice(&medium, large.prev);
++ list_splice(&small, large.prev);
++
++ if (wbuf->lnum == -1) {
++ /*
++ * The GC journal head is not set, because it is the first GC
++ * invocation since mount.
++ */
++ err = switch_gc_head(c);
++ if (err)
++ goto out;
++ }
++
++ /* Write nodes to their new location. Use the first-fit strategy */
++ while (1) {
++ avail = c->leb_size - wbuf->offs - wbuf->used;
++ list_for_each_entry_safe(snod, tmp, &large, list) {
++ int new_lnum, new_offs;
++
++ if (avail < min)
++ break;
++
++ if (snod->len > avail)
++ /* This node does not fit */
++ continue;
++
++ cond_resched();
++
++ new_lnum = wbuf->lnum;
++ new_offs = wbuf->offs + wbuf->used;
++ err = ubifs_wbuf_write_nolock(wbuf, snod->node,
++ snod->len);
++
++ err = ubifs_tnc_replace(c, &snod->key, sleb->lnum,
++ snod->offs, new_lnum, new_offs,
++ snod->len);
++ if (err)
++ goto out;
++
++ avail = c->leb_size - wbuf->offs - wbuf->used;
++ list_del(&snod->list);
++ kfree(snod);
++ }
++
++ if (list_empty(&large))
++ break;
++
++ /*
++ * Waste the rest of the space in the LEB and switch to the
++ * next LEB.
++ */
++ err = switch_gc_head(c);
++ if (err)
++ goto out;
++ }
++
++ return 0;
++
++out:
++ list_for_each_entry_safe(snod, tmp, &large, list) {
++ list_del(&snod->list);
++ kfree(snod);
++ }
++ return err;
++}
++
++/**
++ * gc_sync_wbufs - sync write-buffers for GC.
++ * @c: UBIFS file-system description object
++ *
++ * We must guarantee that obsoleting nodes are on flash. Unfortunately they may
++ * be in a write-buffer instead. That is, a node could be written to a
++ * write-buffer, obsoleting another node in a LEB that is GC'd. If that LEB is
++ * erased before the write-buffer is sync'd and then there is an unclean
++ * unmount, then an existing node is lost. To avoid this, we sync all
++ * write-buffers.
++ *
++ * This function returns %0 on success or a negative error code on failure.
++ */
++static int gc_sync_wbufs(struct ubifs_info *c)
++{
++ int err, i;
++
++ for (i = 0; i < c->jhead_cnt; i++) {
++ if (i == GCHD)
++ continue;
++ err = ubifs_wbuf_sync(&c->jheads[i].wbuf);
++ if (err)
++ return err;
++ }
++ return 0;
++}
++
++/**
++ * ubifs_garbage_collect_leb - garbage-collect a logical eraseblock.
++ * @c: UBIFS file-system description object
++ * @lp: describes the LEB to garbage collect
++ *
++ * This function garbage-collects an LEB and returns one of the @LEB_FREED,
++ * @LEB_RETAINED, etc positive codes in case of success, %-EAGAIN if commit is
++ * required, and other negative error codes in case of failures.
++ */
++int ubifs_garbage_collect_leb(struct ubifs_info *c, struct ubifs_lprops *lp)
++{
++ struct ubifs_scan_leb *sleb;
++ struct ubifs_scan_node *snod;
++ struct ubifs_wbuf *wbuf = &c->jheads[GCHD].wbuf;
++ int err = 0, lnum = lp->lnum;
++
++ ubifs_assert(c->gc_lnum != -1 || wbuf->offs + wbuf->used == 0 ||
++ c->need_recovery);
++ ubifs_assert(c->gc_lnum != lnum);
++ ubifs_assert(wbuf->lnum != lnum);
++
++ /*
++ * We scan the entire LEB even though we only really need to scan up to
++ * (c->leb_size - lp->free).
++ */
++ sleb = ubifs_scan(c, lnum, 0, c->sbuf);
++ if (IS_ERR(sleb))
++ return PTR_ERR(sleb);
++
++ ubifs_assert(!list_empty(&sleb->nodes));
++ snod = list_entry(sleb->nodes.next, struct ubifs_scan_node, list);
++
++ if (snod->type == UBIFS_IDX_NODE) {
++ struct ubifs_gced_idx_leb *idx_gc;
++
++ dbg_gc("indexing LEB %d (free %d, dirty %d)",
++ lnum, lp->free, lp->dirty);
++ list_for_each_entry(snod, &sleb->nodes, list) {
++ struct ubifs_idx_node *idx = snod->node;
++ int level = le16_to_cpu(idx->level);
++
++ ubifs_assert(snod->type == UBIFS_IDX_NODE);
++ key_read(c, ubifs_idx_key(c, idx), &snod->key);
++ err = ubifs_dirty_idx_node(c, &snod->key, level, lnum,
++ snod->offs);
++ if (err)
++ goto out;
++ }
++
++ idx_gc = kmalloc(sizeof(struct ubifs_gced_idx_leb), GFP_NOFS);
++ if (!idx_gc) {
++ err = -ENOMEM;
++ goto out;
++ }
++
++ idx_gc->lnum = lnum;
++ idx_gc->unmap = 0;
++ list_add(&idx_gc->list, &c->idx_gc);
++
++ /*
++ * Don't release the LEB until after the next commit, because
++ * it may contain date which is needed for recovery. So
++ * although we freed this LEB, it will become usable only after
++ * the commit.
++ */
++ err = ubifs_change_one_lp(c, lnum, c->leb_size, 0, 0,
++ LPROPS_INDEX, 1);
++ if (err)
++ goto out;
++ err = LEB_FREED_IDX;
++ } else {
++ dbg_gc("data LEB %d (free %d, dirty %d)",
++ lnum, lp->free, lp->dirty);
++
++ err = move_nodes(c, sleb);
++ if (err)
++ goto out;
++
++ err = gc_sync_wbufs(c);
++ if (err)
++ goto out;
++
++ err = ubifs_change_one_lp(c, lnum, c->leb_size, 0, 0, 0, 0);
++ if (err)
++ goto out;
++
++ if (c->gc_lnum == -1) {
++ c->gc_lnum = lnum;
++ err = LEB_RETAINED;
++ } else {
++ err = ubifs_wbuf_sync_nolock(wbuf);
++ if (err)
++ goto out;
++
++ err = ubifs_leb_unmap(c, lnum);
++ if (err)
++ goto out;
++
++ err = LEB_FREED;
++ }
++ }
++
++out:
++ ubifs_scan_destroy(sleb);
++ return err;
++}
++
++/**
++ * ubifs_garbage_collect - UBIFS garbage collector.
++ * @c: UBIFS file-system description object
++ * @anyway: do GC even if there are free LEBs
++ *
++ * This function does out-of-place garbage collection. The return codes are:
++ * o positive LEB number if the LEB has been freed and may be used;
++ * o %-EAGAIN if the caller has to run commit;
++ * o %-ENOSPC if GC failed to make any progress;
++ * o other negative error codes in case of other errors.
++ *
++ * Garbage collector writes data to the journal when GC'ing data LEBs, and just
++ * marking indexing nodes dirty when GC'ing indexing LEBs. Thus, at some point
++ * commit may be required. But commit cannot be run from inside GC, because the
++ * caller might be holding the commit lock, so %-EAGAIN is returned instead;
++ * And this error code means that the caller has to run commit, and re-run GC
++ * if there is still no free space.
++ *
++ * There are many reasons why this function may return %-EAGAIN:
++ * o the log is full and there is no space to write an LEB reference for
++ * @c->gc_lnum;
++ * o the journal is too large and exceeds size limitations;
++ * o GC moved indexing LEBs, but they can be used only after the commit;
++ * o the shrinker fails to find clean znodes to free and requests the commit;
++ * o etc.
++ *
++ * Note, if the file-system is close to be full, this function may return
++ * %-EAGAIN infinitely, so the caller has to limit amount of re-invocations of
++ * the function. E.g., this happens if the limits on the journal size are too
++ * tough and GC writes too much to the journal before an LEB is freed. This
++ * might also mean that the journal is too large, and the TNC becomes to big,
++ * so that the shrinker is constantly called, finds not clean znodes to free,
++ * and requests commit. Well, this may also happen if the journal is all right,
++ * but another kernel process consumes too much memory. Anyway, infinite
++ * %-EAGAIN may happen, but in some extreme/misconfiguration cases.
++ */
++int ubifs_garbage_collect(struct ubifs_info *c, int anyway)
++{
++ int i, err, ret, min_space = c->dead_wm;
++ struct ubifs_lprops lp;
++ struct ubifs_wbuf *wbuf = &c->jheads[GCHD].wbuf;
++
++ ubifs_assert_cmt_locked(c);
++
++ if (ubifs_gc_should_commit(c))
++ return -EAGAIN;
++
++ mutex_lock_nested(&wbuf->io_mutex, wbuf->jhead);
++ /* We expect the write-buffer to be empty on entry */
++ ubifs_assert(!wbuf->used);
++
++ for (i = 0; ; i++) {
++ int space_before = c->leb_size - wbuf->offs - wbuf->used;
++ int space_after;
++
++ cond_resched();
++
++ /* Give the commit an opportunity to run */
++ if (ubifs_gc_should_commit(c)) {
++ ret = -EAGAIN;
++ break;
++ }
++
++ if (i > SOFT_LEBS_LIMIT && !list_empty(&c->idx_gc)) {
++ /*
++ * We've done enough iterations. Indexing LEBs were
++ * moved and will be available after the commit.
++ */
++ dbg_gc("soft limit, some index LEBs GC'ed, -EAGAIN");
++ ubifs_commit_required(c);
++ ret = -EAGAIN;
++ break;
++ }
++
++ if (i > HARD_LEBS_LIMIT) {
++ /*
++ * We've moved too many LEBs and have not made
++ * progress, give up.
++ */
++ dbg_gc("hard limit, -ENOSPC");
++ ret = -ENOSPC;
++ break;
++ }
++
++ /*
++ * Empty and freeable LEBs can turn up while we waited for
++ * the wbuf lock, or while we have been running GC. In that
++ * case, we should just return one of those instead of
++ * continuing to GC dirty LEBs. Hence we request
++ * 'ubifs_find_dirty_leb()' to return an empty LEB if it can.
++ */
++ ret = ubifs_find_dirty_leb(c, &lp, min_space, anyway ? 0 : 1);
++ if (ret) {
++ if (ret == -ENOSPC)
++ dbg_gc("no more dirty LEBs");
++ break;
++ }
++
++ dbg_gc("found LEB %d: free %d, dirty %d, sum %d "
++ "(min. space %d)", lp.lnum, lp.free, lp.dirty,
++ lp.free + lp.dirty, min_space);
++
++ if (lp.free + lp.dirty == c->leb_size) {
++ /* An empty LEB was returned */
++ dbg_gc("LEB %d is free, return it", lp.lnum);
++ /*
++ * ubifs_find_dirty_leb() doesn't return freeable index
++ * LEBs.
++ */
++ ubifs_assert(!(lp.flags & LPROPS_INDEX));
++ if (lp.free != c->leb_size) {
++ /*
++ * Write buffers must be sync'd before
++ * unmapping freeable LEBs, because one of them
++ * may contain data which obsoletes something
++ * in 'lp.pnum'.
++ */
++ ret = gc_sync_wbufs(c);
++ if (ret)
++ goto out;
++ ret = ubifs_change_one_lp(c, lp.lnum,
++ c->leb_size, 0, 0, 0,
++ 0);
++ if (ret)
++ goto out;
++ }
++ ret = ubifs_leb_unmap(c, lp.lnum);
++ if (ret)
++ goto out;
++ ret = lp.lnum;
++ break;
++ }
++
++ space_before = c->leb_size - wbuf->offs - wbuf->used;
++ if (wbuf->lnum == -1)
++ space_before = 0;
++
++ ret = ubifs_garbage_collect_leb(c, &lp);
++ if (ret < 0) {
++ if (ret == -EAGAIN || ret == -ENOSPC) {
++ /*
++ * These codes are not errors, so we have to
++ * return the LEB to lprops. But if the
++ * 'ubifs_return_leb()' function fails, its
++ * failure code is propagated to the caller
++ * instead of the original '-EAGAIN' or
++ * '-ENOSPC'.
++ */
++ err = ubifs_return_leb(c, lp.lnum);
++ if (err)
++ ret = err;
++ break;
++ }
++ goto out;
++ }
++
++ if (ret == LEB_FREED) {
++ /* An LEB has been freed and is ready for use */
++ dbg_gc("LEB %d freed, return", lp.lnum);
++ ret = lp.lnum;
++ break;
++ }
++
++ if (ret == LEB_FREED_IDX) {
++ /*
++ * This was an indexing LEB and it cannot be
++ * immediately used. And instead of requesting the
++ * commit straight away, we try to garbage collect some
++ * more.
++ */
++ dbg_gc("indexing LEB %d freed, continue", lp.lnum);
++ continue;
++ }
++
++ ubifs_assert(ret == LEB_RETAINED);
++ space_after = c->leb_size - wbuf->offs - wbuf->used;
++ dbg_gc("LEB %d retained, freed %d bytes", lp.lnum,
++ space_after - space_before);
++
++ if (space_after > space_before) {
++ /* GC makes progress, keep working */
++ min_space >>= 1;
++ if (min_space < c->dead_wm)
++ min_space = c->dead_wm;
++ continue;
++ }
++
++ dbg_gc("did not make progress");
++
++ /*
++ * GC moved an LEB bud have not done any progress. This means
++ * that the previous GC head LEB contained too few free space
++ * and the LEB which was GC'ed contained only large nodes which
++ * did not fit that space.
++ *
++ * We can do 2 things:
++ * 1. pick another LEB in a hope it'll contain a small node
++ * which will fit the space we have at the end of current GC
++ * head LEB, but there is no guarantee, so we try this out
++ * unless we have already been working for too long;
++ * 2. request an LEB with more dirty space, which will force
++ * 'ubifs_find_dirty_leb()' to start scanning the lprops
++ * table, instead of just picking one from the heap
++ * (previously it already picked the dirtiest LEB).
++ */
++ if (i < SOFT_LEBS_LIMIT) {
++ dbg_gc("try again");
++ continue;
++ }
++
++ min_space <<= 1;
++ if (min_space > c->dark_wm)
++ min_space = c->dark_wm;
++ dbg_gc("set min. space to %d", min_space);
++ }
++
++ if (ret == -ENOSPC && !list_empty(&c->idx_gc)) {
++ dbg_gc("no space, some index LEBs GC'ed, -EAGAIN");
++ ubifs_commit_required(c);
++ ret = -EAGAIN;
++ }
++
++ err = ubifs_wbuf_sync_nolock(wbuf);
++ if (!err)
++ err = ubifs_leb_unmap(c, c->gc_lnum);
++ if (err)
++ ret = err;
++ mutex_unlock(&wbuf->io_mutex);
++ return ret;
++
++out:
++ ubifs_assert(ret < 0);
++ ubifs_assert(ret != -ENOSPC && ret != -EAGAIN);
++ ubifs_wbuf_sync_nolock(wbuf);
++ mutex_unlock(&wbuf->io_mutex);
++ ubifs_return_leb(c, lp.lnum);
++ return ret;
++}
++
++/**
++ * ubifs_gc_start_commit - garbage collection at start of commit.
++ * @c: UBIFS file-system description object
++ *
++ * If a LEB has only dirty and free space, then we may safely unmap it and make
++ * it free. Note, we cannot do this with indexing LEBs because dirty space may
++ * correspond index nodes that are required for recovery. In that case, the
++ * LEB cannot be unmapped until after the next commit.
++ *
++ * This function returns %0 upon success and a negative error code upon failure.
++ */
++int ubifs_gc_start_commit(struct ubifs_info *c)
++{
++ struct ubifs_gced_idx_leb *idx_gc;
++ const struct ubifs_lprops *lp;
++ int err = 0, flags;
++
++ ubifs_get_lprops(c);
++
++ /*
++ * Unmap (non-index) freeable LEBs. Note that recovery requires that all
++ * wbufs are sync'd before this, which is done in 'do_commit()'.
++ */
++ while (1) {
++ lp = ubifs_fast_find_freeable(c);
++ if (unlikely(IS_ERR(lp))) {
++ err = PTR_ERR(lp);
++ goto out;
++ }
++ if (!lp)
++ break;
++ ubifs_assert(!(lp->flags & LPROPS_TAKEN));
++ ubifs_assert(!(lp->flags & LPROPS_INDEX));
++ err = ubifs_leb_unmap(c, lp->lnum);
++ if (err)
++ goto out;
++ lp = ubifs_change_lp(c, lp, c->leb_size, 0, lp->flags, 0);
++ if (unlikely(IS_ERR(lp))) {
++ err = PTR_ERR(lp);
++ goto out;
++ }
++ ubifs_assert(!(lp->flags & LPROPS_TAKEN));
++ ubifs_assert(!(lp->flags & LPROPS_INDEX));
++ }
++
++ /* Mark GC'd index LEBs OK to unmap after this commit finishes */
++ list_for_each_entry(idx_gc, &c->idx_gc, list)
++ idx_gc->unmap = 1;
++
++ /* Record index freeable LEBs for unmapping after commit */
++ while (1) {
++ lp = ubifs_fast_find_frdi_idx(c);
++ if (unlikely(IS_ERR(lp))) {
++ err = PTR_ERR(lp);
++ goto out;
++ }
++ if (!lp)
++ break;
++ idx_gc = kmalloc(sizeof(struct ubifs_gced_idx_leb), GFP_NOFS);
++ if (!idx_gc) {
++ err = -ENOMEM;
++ goto out;
++ }
++ ubifs_assert(!(lp->flags & LPROPS_TAKEN));
++ ubifs_assert(lp->flags & LPROPS_INDEX);
++ /* Don't release the LEB until after the next commit */
++ flags = (lp->flags | LPROPS_TAKEN) ^ LPROPS_INDEX;
++ lp = ubifs_change_lp(c, lp, c->leb_size, 0, flags, 1);
++ if (unlikely(IS_ERR(lp))) {
++ err = PTR_ERR(lp);
++ kfree(idx_gc);
++ goto out;
++ }
++ ubifs_assert(lp->flags & LPROPS_TAKEN);
++ ubifs_assert(!(lp->flags & LPROPS_INDEX));
++ idx_gc->lnum = lp->lnum;
++ idx_gc->unmap = 1;
++ list_add(&idx_gc->list, &c->idx_gc);
++ }
++out:
++ ubifs_release_lprops(c);
++ return err;
++}
++
++/**
++ * ubifs_gc_end_commit - garbage collection at end of commit.
++ * @c: UBIFS file-system description object
++ *
++ * This function completes out-of-place garbage collection of index LEBs.
++ */
++int ubifs_gc_end_commit(struct ubifs_info *c)
++{
++ struct ubifs_gced_idx_leb *idx_gc, *tmp;
++ struct ubifs_wbuf *wbuf;
++ int err = 0;
++
++ wbuf = &c->jheads[GCHD].wbuf;
++ mutex_lock_nested(&wbuf->io_mutex, wbuf->jhead);
++ list_for_each_entry_safe(idx_gc, tmp, &c->idx_gc, list)
++ if (idx_gc->unmap) {
++ dbg_gc("LEB %d", idx_gc->lnum);
++ err = ubifs_leb_unmap(c, idx_gc->lnum);
++ if (err)
++ goto out;
++ err = ubifs_change_one_lp(c, idx_gc->lnum, LPROPS_NC,
++ LPROPS_NC, 0, LPROPS_TAKEN, -1);
++ if (err)
++ goto out;
++ list_del(&idx_gc->list);
++ kfree(idx_gc);
++ }
++out:
++ mutex_unlock(&wbuf->io_mutex);
++ return err;
++}
++
++/**
++ * ubifs_destroy_idx_gc - destroy idx_gc list.
++ * @c: UBIFS file-system description object
++ *
++ * This function destroys the idx_gc list. It is called when unmounting or
++ * remounting read-only so locks are not needed.
++ */
++void ubifs_destroy_idx_gc(struct ubifs_info *c)
++{
++ while (!list_empty(&c->idx_gc)) {
++ struct ubifs_gced_idx_leb *idx_gc;
++
++ idx_gc = list_entry(c->idx_gc.next, struct ubifs_gced_idx_leb,
++ list);
++ c->idx_gc_cnt -= 1;
++ list_del(&idx_gc->list);
++ kfree(idx_gc);
++ }
++
++}
++
++/**
++ * ubifs_get_idx_gc_leb - get a LEB from GC'd index LEB list.
++ * @c: UBIFS file-system description object
++ *
++ * Called during start commit so locks are not needed.
++ */
++int ubifs_get_idx_gc_leb(struct ubifs_info *c)
++{
++ struct ubifs_gced_idx_leb *idx_gc;
++ int lnum;
++
++ if (list_empty(&c->idx_gc))
++ return -ENOSPC;
++ idx_gc = list_entry(c->idx_gc.next, struct ubifs_gced_idx_leb, list);
++ lnum = idx_gc->lnum;
++ /* c->idx_gc_cnt is updated by the caller when lprops are updated */
++ list_del(&idx_gc->list);
++ kfree(idx_gc);
++ return lnum;
++}
+diff --exclude=.git -urN linux-2.6.25.6/fs/ubifs/io.c avr32-2.6/fs/ubifs/io.c
+--- linux-2.6.25.6/fs/ubifs/io.c 1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/fs/ubifs/io.c 2008-06-12 15:09:45.367815766 +0200
+@@ -0,0 +1,921 @@
++/*
++ * This file is part of UBIFS.
++ *
++ * Copyright (C) 2006-2008 Nokia Corporation.
++ * Copyright (C) 2006, 2007 University of Szeged, Hungary
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published by
++ * the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but WITHOUT
++ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
++ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
++ * more details.
++ *
++ * You should have received a copy of the GNU General Public License along with
++ * this program; if not, write to the Free Software Foundation, Inc., 51
++ * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
++ *
++ * Authors: Artem Bityutskiy (Битюцкий Артём)
++ * Adrian Hunter
++ * Zoltan Sogor
++ */
++
++/*
++ * This file implements UBIFS I/O subsystem which provides various I/O-related
++ * helper functions (reading/writing/checking/validating nodes) and implements
++ * write-buffering support. Write buffers help to save space which otherwise
++ * would have been wasted for padding to the nearest minimal I/O unit boundary.
++ * Instead, data first goes to the write-buffer and is flushed when the
++ * buffer is full or when it is not used for some time (by timer). This is
++ * similarto the mechanism is used by JFFS2.
++ *
++ * Write-buffers are defined by 'struct ubifs_wbuf' objects and protected by
++ * mutexes defined inside these objects. Since sometimes upper-level code
++ * has to lock the write-buffer (e.g. journal space reservation code), many
++ * functions related to write-buffers have "nolock" suffix which means that the
++ * caller has to lock the write-buffer before calling this function.
++ *
++ * UBIFS stores nodes at 64 bit-aligned addresses. If the node length is not
++ * aligned, UBIFS starts the next node from the aligned address, and the padded
++ * bytes may contain any rubbish. In other words, UBIFS does not put padding
++ * bytes in those small gaps. Common headers of nodes store real node lengths,
++ * not aligned lengths. Indexing nodes also store real lengths in branches.
++ *
++ * UBIFS uses padding when it pads to the next min. I/O unit. In this case it
++ * uses padding nodes or padding bytes, if the padding node does not fit.
++ *
++ * All UBIFS nodes are protected by CRC checksums and UBIFS checks all nodes
++ * every time they are read from the flash media.
++ */
++
++#include <linux/crc32.h>
++#include "ubifs.h"
++
++/**
++ * ubifs_check_node - check node.
++ * @c: UBIFS file-system description object
++ * @buf: node to check
++ * @lnum: logical eraseblock number
++ * @offs: offset within the logical eraseblock
++ * @quiet: print no messages
++ *
++ * This function checks node magic number and CRC checksum. This function also
++ * validates node length to prevent UBIFS from becoming crazy when an attacker
++ * feeds it a file-system image with incorrect nodes. For example, too large
++ * node length in the common header could cause UBIFS to read memory outside of
++ * allocated buffer when checking the CRC checksum.
++ *
++ * This function returns zero in case of success %-EUCLEAN in case of bad CRC
++ * or magic.
++ */
++int ubifs_check_node(const struct ubifs_info *c, const void *buf, int lnum,
++ int offs, int quiet)
++{
++ int err = -EINVAL, type, node_len;
++ uint32_t crc, node_crc, magic;
++ const struct ubifs_ch *ch = buf;
++
++ ubifs_assert(lnum >= 0 && lnum < c->leb_cnt && offs >= 0);
++ ubifs_assert(!(offs & 7) && offs < c->leb_size);
++
++ magic = le32_to_cpu(ch->magic);
++ if (magic != UBIFS_NODE_MAGIC) {
++ if (!quiet)
++ ubifs_err("bad magic %#08x, expected %#08x",
++ magic, UBIFS_NODE_MAGIC);
++ err = -EUCLEAN;
++ goto out;
++ }
++
++ type = ch->node_type;
++ if (type < 0 || type >= UBIFS_NODE_TYPES_CNT) {
++ if (!quiet)
++ ubifs_err("bad node type %d", type);
++ goto out;
++ }
++
++ node_len = le32_to_cpu(ch->len);
++ if (node_len + offs > c->leb_size)
++ goto out_len;
++
++ if (c->ranges[type].max_len == 0) {
++ if (node_len != c->ranges[type].len)
++ goto out_len;
++ } else if (node_len < c->ranges[type].min_len ||
++ node_len > c->ranges[type].max_len)
++ goto out_len;
++
++ crc = crc32(UBIFS_CRC32_INIT, buf + 8, node_len - 8);
++ node_crc = le32_to_cpu(ch->crc);
++ if (crc != node_crc) {
++ if (!quiet)
++ ubifs_err("bad CRC: calculated %#08x, read %#08x",
++ crc, node_crc);
++ err = -EUCLEAN;
++ goto out;
++ }
++
++ return 0;
++
++out_len:
++ if (!quiet)
++ ubifs_err("bad node length %d", node_len);
++out:
++ if (!quiet) {
++ ubifs_err("bad node at LEB %d:%d", lnum, offs);
++ dbg_dump_node(c, buf);
++ dbg_dump_stack();
++ }
++ return err;
++}
++
++/**
++ * ubifs_pad - pad flash space.
++ * @c: UBIFS file-system description object
++ * @buf: buffer to put padding to
++ * @pad: how many bytes to pad
++ *
++ * The flash media obliges us to write only in chunks of %c->min_io_size and
++ * when we have to write less data we add padding node to the write-buffer and
++ * pad it to the next minimal I/O unit's boundary. Padding nodes help when the
++ * media is being scanned. If the amount of wasted space is not enough to fit a
++ * padding node which takes %UBIFS_PAD_NODE_SZ bytes, we write padding bytes
++ * pattern (%UBIFS_PADDING_BYTE).
++ *
++ * Padding nodes are also used to fill gaps when the "commit-in-gaps" method is
++ * used.
++ */
++void ubifs_pad(const struct ubifs_info *c, void *buf, int pad)
++{
++ uint32_t crc;
++
++ ubifs_assert(pad >= 0 && !(pad & 7));
++
++ if (pad >= UBIFS_PAD_NODE_SZ) {
++ struct ubifs_ch *ch = buf;
++ struct ubifs_pad_node *pad_node = buf;
++
++ ch->magic = cpu_to_le32(UBIFS_NODE_MAGIC);
++ ch->node_type = UBIFS_PAD_NODE;
++ ch->group_type = UBIFS_NO_NODE_GROUP;
++ ch->padding[0] = ch->padding[1] = 0;
++ ch->sqnum = 0;
++ ch->len = cpu_to_le32(UBIFS_PAD_NODE_SZ);
++ pad -= UBIFS_PAD_NODE_SZ;
++ pad_node->pad_len = cpu_to_le32(pad);
++ crc = crc32(UBIFS_CRC32_INIT, buf + 8, UBIFS_PAD_NODE_SZ - 8);
++ ch->crc = cpu_to_le32(crc);
++ memset(buf + UBIFS_PAD_NODE_SZ, 0, pad);
++ } else if (pad > 0)
++ /* Too little space, padding node won't fit */
++ memset(buf, UBIFS_PADDING_BYTE, pad);
++}
++
++/**
++ * next_sqnum - get next sequence number.
++ * @c: UBIFS file-system description object
++ */
++static unsigned long long next_sqnum(struct ubifs_info *c)
++{
++ unsigned long long sqnum;
++
++ spin_lock(&c->cnt_lock);
++ sqnum = ++c->max_sqnum;
++ spin_unlock(&c->cnt_lock);
++
++ if (unlikely(sqnum >= SQNUM_WARN_WATERMARK)) {
++ if (sqnum >= SQNUM_WATERMARK) {
++ ubifs_err("sequence number overflow %llu, end of life",
++ sqnum);
++ ubifs_ro_mode(c, -EINVAL);
++ }
++ ubifs_warn("running out of sequence numbers, end of life soon");
++ }
++
++ return sqnum;
++}
++
++/**
++ * ubifs_prepare_node - prepare node to be written to flash.
++ * @c: UBIFS file-system description object
++ * @node: the node to pad
++ * @len: node length
++ * @pad: if the buffer has to be padded
++ *
++ * This function prepares node at @node to be written to the media - it
++ * calculates node CRC, fills the common header, and adds proper padding up to
++ * the next minimum I/O unit if @pad is not zero.
++ */
++void ubifs_prepare_node(struct ubifs_info *c, void *node, int len, int pad)
++{
++ uint32_t crc;
++ struct ubifs_ch *ch = node;
++ unsigned long long sqnum = next_sqnum(c);
++
++ ubifs_assert(len >= UBIFS_CH_SZ);
++
++ ch->magic = cpu_to_le32(UBIFS_NODE_MAGIC);
++ ch->len = cpu_to_le32(len);
++ ch->group_type = UBIFS_NO_NODE_GROUP;
++ ch->sqnum = cpu_to_le64(sqnum);
++ ch->padding[0] = ch->padding[1] = 0;
++ crc = crc32(UBIFS_CRC32_INIT, node + 8, len - 8);
++ ch->crc = cpu_to_le32(crc);
++
++ if (pad) {
++ len = ALIGN(len, 8);
++ pad = ALIGN(len, c->min_io_size) - len;
++ ubifs_pad(c, node + len, pad);
++ }
++}
++
++/**
++ * ubifs_prep_grp_node - prepare node of a group to be written to flash.
++ * @c: UBIFS file-system description object
++ * @node: the node to pad
++ * @len: node length
++ * @last: indicates the last node of the group
++ *
++ * This function prepares node at @node to be written to the media - it
++ * calculates node CRC and fills the common header.
++ */
++void ubifs_prep_grp_node(struct ubifs_info *c, void *node, int len, int last)
++{
++ uint32_t crc;
++ struct ubifs_ch *ch = node;
++ unsigned long long sqnum = next_sqnum(c);
++
++ ubifs_assert(len >= UBIFS_CH_SZ);
++
++ ch->magic = cpu_to_le32(UBIFS_NODE_MAGIC);
++ ch->len = cpu_to_le32(len);
++ if (last)
++ ch->group_type = UBIFS_LAST_OF_NODE_GROUP;
++ else
++ ch->group_type = UBIFS_IN_NODE_GROUP;
++ ch->sqnum = cpu_to_le64(sqnum);
++ ch->padding[0] = ch->padding[1] = 0;
++ crc = crc32(UBIFS_CRC32_INIT, node + 8, len - 8);
++ ch->crc = cpu_to_le32(crc);
++}
++
++/**
++ * wbuf_timer_callback - write-buffer timer callback function.
++ * @data: timer data (write-buffer descriptor)
++ *
++ * This function is called when the write-buffer timer expires.
++ */
++static void wbuf_timer_callback_nolock(unsigned long data)
++{
++ struct ubifs_wbuf *wbuf = (struct ubifs_wbuf *)data;
++
++ wbuf->need_sync = 1;
++ wbuf->c->need_wbuf_sync = 1;
++ ubifs_wake_up_bgt(wbuf->c);
++}
++
++/**
++ * new_wbuf_timer - start new write-buffer timer.
++ * @wbuf: write-buffer descriptor
++ */
++static void new_wbuf_timer_nolock(struct ubifs_wbuf *wbuf)
++{
++ ubifs_assert(!timer_pending(&wbuf->timer));
++
++ if (!wbuf->timeout)
++ return;
++
++ wbuf->timer.expires = jiffies + wbuf->timeout;
++ add_timer(&wbuf->timer);
++}
++
++/**
++ * cancel_wbuf_timer - cancel write-buffer timer.
++ * @wbuf: write-buffer descriptor
++ */
++static void cancel_wbuf_timer_nolock(struct ubifs_wbuf *wbuf)
++{
++ /*
++ * If the syncer is waiting for the lock (from the background thread's
++ * context) and another task is changing write-buffer then the syncing
++ * should be canceled.
++ */
++ wbuf->need_sync = 0;
++ del_timer(&wbuf->timer);
++}
++
++/**
++ * ubifs_wbuf_sync_nolock - synchronize write-buffer.
++ * @wbuf: write-buffer to synchronize
++ *
++ * This function synchronizes write-buffer @buf and returns zero in case of
++ * success or a negative error code in case of failure.
++ */
++int ubifs_wbuf_sync_nolock(struct ubifs_wbuf *wbuf)
++{
++ struct ubifs_info *c = wbuf->c;
++ int err, dirt;
++
++ cancel_wbuf_timer_nolock(wbuf);
++ if (!wbuf->used || wbuf->lnum == -1)
++ /* Write-buffer is empty or not seeked */
++ return 0;
++
++ dbg_io("LEB %d:%d, %d bytes",
++ wbuf->lnum, wbuf->offs, wbuf->used);
++ ubifs_assert(!(c->vfs_sb->s_flags & MS_RDONLY));
++ ubifs_assert(!(wbuf->avail & 7));
++ ubifs_assert(wbuf->offs + c->min_io_size <= c->leb_size);
++
++ if (c->ro_media)
++ return -EROFS;
++
++ ubifs_pad(c, wbuf->buf + wbuf->used, wbuf->avail);
++ err = ubi_leb_write(c->ubi, wbuf->lnum, wbuf->buf, wbuf->offs,
++ c->min_io_size, wbuf->dtype);
++ if (err) {
++ ubifs_err("cannot write %d bytes to LEB %d:%d",
++ c->min_io_size, wbuf->lnum, wbuf->offs);
++ dbg_dump_stack();
++ return err;
++ }
++
++ dirt = wbuf->avail;
++
++ spin_lock(&wbuf->lock);
++ wbuf->offs += c->min_io_size;
++ wbuf->avail = c->min_io_size;
++ wbuf->used = 0;
++ wbuf->next_ino = 0;
++ spin_unlock(&wbuf->lock);
++
++ if (wbuf->sync_callback)
++ err = wbuf->sync_callback(c, wbuf->lnum,
++ c->leb_size - wbuf->offs, dirt);
++ return err;
++}
++
++/**
++ * ubifs_wbuf_seek_nolock - seek write-buffer.
++ * @wbuf: write-buffer
++ * @lnum: logical eraseblock number to seek to
++ * @offs: logical eraseblock offset to seek to
++ * @dtype: data type
++ *
++ * This function targets the write buffer to logical eraseblock @lnum:@offs.
++ * The write-buffer is synchronized if it is not empty. Returns zero in case of
++ * success and a negative error code in case of failure.
++ */
++int ubifs_wbuf_seek_nolock(struct ubifs_wbuf *wbuf, int lnum, int offs,
++ int dtype)
++{
++ const struct ubifs_info *c = wbuf->c;
++
++ dbg_io("LEB %d:%d", lnum, offs);
++ ubifs_assert(lnum >= 0 && lnum < c->leb_cnt);
++ ubifs_assert(offs >= 0 && offs <= c->leb_size);
++ ubifs_assert(offs % c->min_io_size == 0 && !(offs & 7));
++ ubifs_assert(lnum != wbuf->lnum);
++
++ if (wbuf->used > 0) {
++ int err = ubifs_wbuf_sync_nolock(wbuf);
++
++ if (err)
++ return err;
++ }
++
++ spin_lock(&wbuf->lock);
++ wbuf->lnum = lnum;
++ wbuf->offs = offs;
++ wbuf->avail = c->min_io_size;
++ wbuf->used = 0;
++ spin_unlock(&wbuf->lock);
++ wbuf->dtype = dtype;
++
++ return 0;
++}
++
++/**
++ * ubifs_bg_wbufs_sync - synchronize write-buffers.
++ * @c: UBIFS file-system description object
++ *
++ * This function is called by background thread to synchronize write-buffers.
++ * Returns zero in case of success and a negative error code in case of
++ * failure.
++ */
++int ubifs_bg_wbufs_sync(struct ubifs_info *c)
++{
++ int err, i;
++
++ if (!c->need_wbuf_sync)
++ return 0;
++ c->need_wbuf_sync = 0;
++
++ if (c->ro_media) {
++ err = -EROFS;
++ goto out_timers;
++ }
++
++ dbg_io("synchronize");
++ for (i = 0; i < c->jhead_cnt; i++) {
++ struct ubifs_wbuf *wbuf = &c->jheads[i].wbuf;
++
++ cond_resched();
++
++ /*
++ * If the mutex is locked then wbuf is being changed, so
++ * synchronization is not necessary.
++ */
++ if (mutex_is_locked(&wbuf->io_mutex))
++ continue;
++
++ mutex_lock_nested(&wbuf->io_mutex, wbuf->jhead);
++ if (!wbuf->need_sync) {
++ mutex_unlock(&wbuf->io_mutex);
++ continue;
++ }
++
++ err = ubifs_wbuf_sync_nolock(wbuf);
++ mutex_unlock(&wbuf->io_mutex);
++ if (err) {
++ ubifs_err("cannot sync write-buffer, error %d", err);
++ ubifs_ro_mode(c, err);
++ goto out_timers;
++ }
++ }
++
++ return 0;
++
++out_timers:
++ /* Cancel all timers to prevent repeated errors */
++ for (i = 0; i < c->jhead_cnt; i++) {
++ struct ubifs_wbuf *wbuf = &c->jheads[i].wbuf;
++
++ mutex_lock_nested(&wbuf->io_mutex, wbuf->jhead);
++ cancel_wbuf_timer_nolock(wbuf);
++ mutex_unlock(&wbuf->io_mutex);
++ }
++ return err;
++}
++
++/**
++ * ubifs_wbuf_write_nolock - write data to flash via write-buffer.
++ * @wbuf: write-buffer
++ * @buf: node to write
++ * @len: node length
++ *
++ * This function writes data to flash via write-buffer @wbuf. This means that
++ * the last piece of the node won't reach the flash media immediately if it
++ * does not take whole minimal I/O unit. Instead, the node will sit in RAM
++ * until the write-buffer is synchronized (e.g., by timer).
++ *
++ * This function returns zero in case of success and a negative error code in
++ * case of failure. If the node cannot be written because there is no more
++ * space in this logical eraseblock, %-ENOSPC is returned.
++ */
++int ubifs_wbuf_write_nolock(struct ubifs_wbuf *wbuf, void *buf, int len)
++{
++ struct ubifs_info *c = wbuf->c;
++ int err, written, n, aligned_len = ALIGN(len, 8), offs;
++
++ dbg_io("%d bytes (%s) to wbuf at LEB %d:%d", len,
++ dbg_ntype(((struct ubifs_ch *)buf)->node_type), wbuf->lnum,
++ wbuf->offs + wbuf->used);
++ ubifs_assert(len > 0 && wbuf->lnum >= 0 && wbuf->lnum < c->leb_cnt);
++ ubifs_assert(wbuf->offs >= 0 && wbuf->offs % c->min_io_size == 0);
++ ubifs_assert(!(wbuf->offs & 7) && wbuf->offs <= c->leb_size);
++ ubifs_assert(wbuf->avail > 0 && wbuf->avail <= c->min_io_size);
++ ubifs_assert(mutex_is_locked(&wbuf->io_mutex));
++
++ if (c->leb_size - wbuf->offs - wbuf->used < aligned_len) {
++ err = -ENOSPC;
++ goto out;
++ }
++
++ cancel_wbuf_timer_nolock(wbuf);
++
++ if (c->ro_media)
++ return -EROFS;
++
++ if (aligned_len <= wbuf->avail) {
++ /*
++ * The node is not very large and fits entirely within
++ * write-buffer.
++ */
++ memcpy(wbuf->buf + wbuf->used, buf, len);
++
++ if (aligned_len == wbuf->avail) {
++ dbg_io("flush wbuf to LEB %d:%d", wbuf->lnum,
++ wbuf->offs);
++ err = ubi_leb_write(c->ubi, wbuf->lnum, wbuf->buf,
++ wbuf->offs, c->min_io_size,
++ wbuf->dtype);
++ if (err)
++ goto out;
++
++ spin_lock(&wbuf->lock);
++ wbuf->offs += c->min_io_size;
++ wbuf->avail = c->min_io_size;
++ wbuf->used = 0;
++ wbuf->next_ino = 0;
++ spin_unlock(&wbuf->lock);
++ } else {
++ spin_lock(&wbuf->lock);
++ wbuf->avail -= aligned_len;
++ wbuf->used += aligned_len;
++ spin_unlock(&wbuf->lock);
++ }
++
++ goto exit;
++ }
++
++ /*
++ * The node is large enough and does not fit entirely within current
++ * minimal I/O unit. We have to fill and flush write-buffer and switch
++ * to the next min. I/O unit.
++ */
++ dbg_io("flush wbuf to LEB %d:%d", wbuf->lnum, wbuf->offs);
++ memcpy(wbuf->buf + wbuf->used, buf, wbuf->avail);
++ err = ubi_leb_write(c->ubi, wbuf->lnum, wbuf->buf, wbuf->offs,
++ c->min_io_size, wbuf->dtype);
++ if (err)
++ goto out;
++
++ offs = wbuf->offs + c->min_io_size;
++ len -= wbuf->avail;
++ aligned_len -= wbuf->avail;
++ written = wbuf->avail;
++
++ /*
++ * The remaining data may take more whole min. I/O units, so write the
++ * remains multiple to min. I/O unit size directly to the flash media.
++ * We align node length to 8-byte boundary because we anyway flash wbuf
++ * if the remaining space is less than 8 bytes.
++ */
++ n = aligned_len >> c->min_io_shift;
++ if (n) {
++ n <<= c->min_io_shift;
++ dbg_io("write %d bytes to LEB %d:%d", n, wbuf->lnum, offs);
++ err = ubi_leb_write(c->ubi, wbuf->lnum, buf + written, offs, n,
++ wbuf->dtype);
++ if (err)
++ goto out;
++ offs += n;
++ aligned_len -= n;
++ len -= n;
++ written += n;
++ }
++
++ spin_lock(&wbuf->lock);
++ if (aligned_len)
++ /*
++ * And now we have what's left and what does not take whole
++ * min. I/O unit, so write it to the write-buffer and we are
++ * done.
++ */
++ memcpy(wbuf->buf, buf + written, len);
++
++ wbuf->offs = offs;
++ wbuf->used = aligned_len;
++ wbuf->avail = c->min_io_size - aligned_len;
++ wbuf->next_ino = 0;
++ spin_unlock(&wbuf->lock);
++
++exit:
++ if (wbuf->sync_callback) {
++ int free = c->leb_size - wbuf->offs - wbuf->used;
++
++ err = wbuf->sync_callback(c, wbuf->lnum, free, 0);
++ if (err)
++ goto out;
++ }
++
++ if (wbuf->used)
++ new_wbuf_timer_nolock(wbuf);
++
++ return 0;
++
++out:
++ ubifs_err("cannot write %d bytes to LEB %d:%d, error %d",
++ len, wbuf->lnum, wbuf->offs, err);
++ dbg_dump_node(c, buf);
++ dbg_dump_stack();
++ dbg_dump_leb(c, wbuf->lnum);
++ return err;
++}
++
++/**
++ * ubifs_write_node - write node to the media.
++ * @c: UBIFS file-system description object
++ * @buf: the node to write
++ * @len: node length
++ * @lnum: logical eraseblock number
++ * @offs: offset within the logical eraseblock
++ * @dtype: node life-time hint (%UBI_LONGTERM, %UBI_SHORTTERM, %UBI_UNKNOWN)
++ *
++ * This function automatically fills node magic number, assigns sequence
++ * number, and calculates node CRC checksum. The length of the @buf buffer has
++ * to be aligned to the minimal I/O unit size. This function automatically
++ * appends padding node and padding bytes if needed. Returns zero in case of
++ * success and a negative error code in case of failure.
++ */
++int ubifs_write_node(struct ubifs_info *c, void *buf, int len, int lnum,
++ int offs, int dtype)
++{
++ int err, buf_len = ALIGN(len, c->min_io_size);
++
++ dbg_io("LEB %d:%d, %s, length %d (aligned %d)",
++ lnum, offs, dbg_ntype(((struct ubifs_ch *)buf)->node_type), len,
++ buf_len);
++ ubifs_assert(lnum >= 0 && lnum < c->leb_cnt && offs >= 0);
++ ubifs_assert(offs % c->min_io_size == 0 && offs < c->leb_size);
++
++ if (c->ro_media)
++ return -EROFS;
++
++ ubifs_prepare_node(c, buf, len, 1);
++ err = ubi_leb_write(c->ubi, lnum, buf, offs, buf_len, dtype);
++ if (err) {
++ ubifs_err("cannot write %d bytes to LEB %d:%d, error %d",
++ buf_len, lnum, offs, err);
++ dbg_dump_node(c, buf);
++ dbg_dump_stack();
++ }
++
++ return err;
++}
++
++/**
++ * ubifs_read_node_wbuf - read node from the media or write-buffer.
++ * @wbuf: wbuf to check for un-written data
++ * @buf: buffer to read to
++ * @type: node type
++ * @len: node length
++ * @lnum: logical eraseblock number
++ * @offs: offset within the logical eraseblock
++ *
++ * This function reads a node of known type and length, checks it and stores
++ * in @buf. If the node partially or fully sits in the write-buffer, this
++ * function takes data from the buffer, otherwise it reads the flash media.
++ * Returns zero in case of success, %-EUCLEAN if CRC mismatched and a negative
++ * error code in case of failure.
++ */
++int ubifs_read_node_wbuf(struct ubifs_wbuf *wbuf, void *buf, int type, int len,
++ int lnum, int offs)
++{
++ const struct ubifs_info *c = wbuf->c;
++ int err, rlen, overlap;
++ struct ubifs_ch *ch = buf;
++
++ dbg_io("LEB %d:%d, %s, length %d", lnum, offs, dbg_ntype(type), len);
++ ubifs_assert(wbuf && lnum >= 0 && lnum < c->leb_cnt && offs >= 0);
++ ubifs_assert(!(offs & 7) && offs < c->leb_size);
++ ubifs_assert(type >= 0 && type < UBIFS_NODE_TYPES_CNT);
++
++ spin_lock(&wbuf->lock);
++ overlap = (lnum == wbuf->lnum && offs + len > wbuf->offs);
++ if (!overlap) {
++ /* We may safely unlock the write-buffer and read the data */
++ spin_unlock(&wbuf->lock);
++ return ubifs_read_node(c, buf, type, len, lnum, offs);
++ }
++
++ /* Don't read under wbuf */
++ rlen = wbuf->offs - offs;
++ if (rlen < 0)
++ rlen = 0;
++
++ /* Copy the rest from the write-buffer */
++ memcpy(buf + rlen, wbuf->buf + offs + rlen - wbuf->offs, len - rlen);
++ spin_unlock(&wbuf->lock);
++
++ if (rlen > 0) {
++ /* Read everything that goes before write-buffer */
++ err = ubi_read(c->ubi, lnum, buf, offs, rlen);
++ if (err && err != -EBADMSG) {
++ ubifs_err("failed to read node %d from LEB %d:%d, "
++ "error %d", type, lnum, offs, err);
++ dbg_dump_stack();
++ return err;
++ }
++ }
++
++ err = ubifs_check_node(c, buf, lnum, offs, 0);
++ if (err) {
++ ubifs_err("expected node type %d", type);
++ return err;
++ }
++
++ if (type != ch->node_type) {
++ ubifs_err("bad node type (%d but expected %d)",
++ ch->node_type, type);
++ goto out;
++ }
++
++ rlen = le32_to_cpu(ch->len);
++ if (rlen != len) {
++ ubifs_err("bad node length %d, expected %d", rlen, len);
++ goto out;
++ }
++
++ return 0;
++
++out:
++ ubifs_err("bad node at LEB %d:%d", lnum, offs);
++ dbg_dump_node(c, buf);
++ dbg_dump_stack();
++ return -EINVAL;
++}
++
++/**
++ * ubifs_read_node - read node.
++ * @c: UBIFS file-system description object
++ * @buf: buffer to read to
++ * @type: node type
++ * @len: node length (not aligned)
++ * @lnum: logical eraseblock number
++ * @offs: offset within the logical eraseblock
++ *
++ * This function reads a node of known type and and length, checks it and
++ * stores in @buf. Returns zero in case of success, %-EUCLEAN if CRC mismatched
++ * and a negative error code in case of failure.
++ */
++int ubifs_read_node(const struct ubifs_info *c, void *buf, int type, int len,
++ int lnum, int offs)
++{
++ int err, l;
++ struct ubifs_ch *ch = buf;
++
++ dbg_io("LEB %d:%d, %s, length %d", lnum, offs, dbg_ntype(type), len);
++ ubifs_assert(lnum >= 0 && lnum < c->leb_cnt && offs >= 0);
++ ubifs_assert(len >= UBIFS_CH_SZ && offs + len <= c->leb_size);
++ ubifs_assert(!(offs & 7) && offs < c->leb_size);
++ ubifs_assert(type >= 0 && type < UBIFS_NODE_TYPES_CNT);
++
++ err = ubi_read(c->ubi, lnum, buf, offs, len);
++ if (err && err != -EBADMSG) {
++ ubifs_err("cannot read node %d from LEB %d:%d, error %d",
++ type, lnum, offs, err);
++ return err;
++ }
++
++ err = ubifs_check_node(c, buf, lnum, offs, 0);
++ if (err) {
++ ubifs_err("expected node type %d", type);
++ return err;
++ }
++
++ if (type != ch->node_type) {
++ ubifs_err("bad node type (%d but expected %d)",
++ ch->node_type, type);
++ goto out;
++ }
++
++ l = le32_to_cpu(ch->len);
++ if (l != len) {
++ ubifs_err("bad node length %d, expected %d", l, len);
++ goto out;
++ }
++
++ return 0;
++
++out:
++ ubifs_err("bad node at LEB %d:%d", lnum, offs);
++ dbg_dump_node(c, buf);
++ dbg_dump_stack();
++ return -EINVAL;
++}
++
++/**
++ * ubifs_wbuf_init - initialize write-buffer.
++ * @c: UBIFS file-system description object
++ * @wbuf: write-buffer to initialize
++ *
++ * This function initializes write buffer. Returns zero in case of success
++ * %-ENOMEM in case of failure.
++ */
++int ubifs_wbuf_init(struct ubifs_info *c, struct ubifs_wbuf *wbuf)
++{
++ size_t size;
++
++ wbuf->buf = kmalloc(c->min_io_size, GFP_KERNEL);
++ if (!wbuf->buf)
++ return -ENOMEM;
++
++ size = (c->min_io_size / UBIFS_CH_SZ + 1) * sizeof(ino_t);
++ wbuf->inodes = kmalloc(size, GFP_KERNEL);
++ if (!wbuf->inodes) {
++ kfree(wbuf->buf);
++ wbuf->buf = NULL;
++ return -ENOMEM;
++ }
++
++ wbuf->used = 0;
++ wbuf->lnum = wbuf->offs = -1;
++ wbuf->avail = c->min_io_size;
++ wbuf->dtype = UBI_UNKNOWN;
++ wbuf->sync_callback = NULL;
++ mutex_init(&wbuf->io_mutex);
++ spin_lock_init(&wbuf->lock);
++
++ wbuf->c = c;
++ init_timer(&wbuf->timer);
++ wbuf->timer.function = wbuf_timer_callback_nolock;
++ wbuf->timer.data = (unsigned long)wbuf;
++ wbuf->timeout = DEFAULT_WBUF_TIMEOUT;
++ wbuf->next_ino = 0;
++
++ return 0;
++}
++
++/**
++ * ubifs_wbuf_add_ino_nolock - add an inode number into the wbuf inode array.
++ * @wbuf: the write-buffer whereto add
++ * @inum: the inode number
++ *
++ * This function adds an inode number to the inode array of the write-buffer.
++ */
++void ubifs_wbuf_add_ino_nolock(struct ubifs_wbuf *wbuf, ino_t inum)
++{
++ if (!wbuf->buf)
++ /* NOR flash or something similar */
++ return;
++
++ spin_lock(&wbuf->lock);
++ if (wbuf->used)
++ wbuf->inodes[wbuf->next_ino++] = inum;
++ spin_unlock(&wbuf->lock);
++}
++
++/**
++ * wbuf_has_ino - returns if the wbuf contains data from the inode.
++ * @wbuf: the write-buffer
++ * @inum: the inode number
++ *
++ * This function returns with %1 if the write-buffer contains some data from the
++ * given inode otherwise it returns with %0.
++ */
++static int wbuf_has_ino(struct ubifs_wbuf *wbuf, ino_t inum)
++{
++ int i, ret = 0;
++
++ spin_lock(&wbuf->lock);
++ for (i = 0; i < wbuf->next_ino; i++)
++ if (inum == wbuf->inodes[i]) {
++ ret = 1;
++ break;
++ }
++ spin_unlock(&wbuf->lock);
++
++ return ret;
++}
++
++/**
++ * ubifs_sync_wbufs_by_inodes - synchronize write-buffers which have data.
++ * belonging to specified inodes.
++ * @c: UBIFS file-system description object
++ * @inodes: array of inodes
++ * @count: number of elements in @inodes
++ *
++ * This function synchronizes write-buffers which contain nodes belonging to
++ * any inode specified in @inodes array. Returns zero in case of success and a
++ * negative error code in case of failure.
++ */
++int ubifs_sync_wbufs_by_inodes(struct ubifs_info *c,
++ struct inode * const *inodes, int count)
++{
++ int i, j, err = 0;
++
++ ubifs_assert(count);
++
++ for (i = 0; i < c->jhead_cnt; i++) {
++ struct ubifs_wbuf *wbuf = &c->jheads[i].wbuf;
++
++ if (i == GCHD)
++ /*
++ * GC head is special, do not look at it. Even if the
++ * head contains something related to this inode, it is
++ * a _copy_ of corresponding on-flash node which sits
++ * somewhere else.
++ */
++ continue;
++
++ for (j = 0; j < count && !err; j++)
++ if (wbuf_has_ino(wbuf, inodes[j]->i_ino)) {
++ mutex_lock_nested(&wbuf->io_mutex, wbuf->jhead);
++ if (wbuf_has_ino(wbuf, inodes[j]->i_ino))
++ err = ubifs_wbuf_sync_nolock(wbuf);
++ mutex_unlock(&wbuf->io_mutex);
++ break;
++ }
++
++ if (err) {
++ ubifs_ro_mode(c, err);
++ break;
++ }
++ }
++
++ return err;
++}
+diff --exclude=.git -urN linux-2.6.25.6/fs/ubifs/ioctl.c avr32-2.6/fs/ubifs/ioctl.c
+--- linux-2.6.25.6/fs/ubifs/ioctl.c 1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/fs/ubifs/ioctl.c 2008-06-12 15:09:45.367815766 +0200
+@@ -0,0 +1,204 @@
++/*
++ * This file is part of UBIFS.
++ *
++ * Copyright (C) 2006-2008 Nokia Corporation.
++ * Copyright (C) 2006, 2007 University of Szeged, Hungary
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published by
++ * the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but WITHOUT
++ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
++ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
++ * more details.
++ *
++ * You should have received a copy of the GNU General Public License along with
++ * this program; if not, write to the Free Software Foundation, Inc., 51
++ * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
++ *
++ * Authors: Zoltan Sogor
++ * Artem Bityutskiy (Битюцкий Артём)
++ * Adrian Hunter
++ */
++
++/* This file implements EXT2-compatible extended attribute ioctl() calls */
++
++#include <linux/compat.h>
++#include <linux/smp_lock.h>
++#include "ubifs.h"
++
++/**
++ * ubifs_set_inode_flags - set VFS inode flags.
++ * @inode: VFS inode to set flags for
++ *
++ * This function propagates flags from UBIFS inode object to VFS inode object.
++ */
++void ubifs_set_inode_flags(struct inode *inode)
++{
++ unsigned int flags = ubifs_inode(inode)->flags;
++
++ inode->i_flags &= ~(S_SYNC | S_APPEND | S_IMMUTABLE | S_DIRSYNC);
++ if (flags & UBIFS_SYNC_FL)
++ inode->i_flags |= S_SYNC;
++ if (flags & UBIFS_APPEND_FL)
++ inode->i_flags |= S_APPEND;
++ if (flags & UBIFS_IMMUTABLE_FL)
++ inode->i_flags |= S_IMMUTABLE;
++ if (flags & UBIFS_DIRSYNC_FL)
++ inode->i_flags |= S_DIRSYNC;
++}
++
++/*
++ * ioctl2ubifs - convert ioctl inode flags to UBIFS inode flags.
++ * @ioctl_flags: flags to convert
++ *
++ * This function convert ioctl flags (@FS_COMPR_FL, etc) to UBIFS inode flags
++ * (@UBIFS_COMPR_FL, etc).
++ */
++static int ioctl2ubifs(int ioctl_flags)
++{
++ int ubifs_flags = 0;
++
++ if (ioctl_flags & FS_COMPR_FL)
++ ubifs_flags |= UBIFS_COMPR_FL;
++ if (ioctl_flags & FS_SYNC_FL)
++ ubifs_flags |= UBIFS_SYNC_FL;
++ if (ioctl_flags & FS_APPEND_FL)
++ ubifs_flags |= UBIFS_APPEND_FL;
++ if (ioctl_flags & FS_IMMUTABLE_FL)
++ ubifs_flags |= UBIFS_IMMUTABLE_FL;
++ if (ioctl_flags & FS_DIRSYNC_FL)
++ ubifs_flags |= UBIFS_DIRSYNC_FL;
++
++ return ubifs_flags;
++}
++
++/*
++ * ubifs2ioctl - convert UBIFS inode flags to ioctl inode flags.
++ * @ubifs_flags: flags to convert
++ *
++ * This function convert UBIFS (@UBIFS_COMPR_FL, etc) to ioctl flags
++ * (@FS_COMPR_FL, etc).
++ */
++static int ubifs2ioctl(int ubifs_flags)
++{
++ int ioctl_flags = 0;
++
++ if (ubifs_flags & UBIFS_COMPR_FL)
++ ioctl_flags |= FS_COMPR_FL;
++ if (ubifs_flags & UBIFS_SYNC_FL)
++ ioctl_flags |= FS_SYNC_FL;
++ if (ubifs_flags & UBIFS_APPEND_FL)
++ ioctl_flags |= FS_APPEND_FL;
++ if (ubifs_flags & UBIFS_IMMUTABLE_FL)
++ ioctl_flags |= FS_IMMUTABLE_FL;
++ if (ubifs_flags & UBIFS_DIRSYNC_FL)
++ ioctl_flags |= FS_DIRSYNC_FL;
++
++ return ioctl_flags;
++}
++
++static int setflags(struct inode *inode, int flags)
++{
++ struct ubifs_inode *ui = ubifs_inode(inode);
++ struct ubifs_info *c = inode->i_sb->s_fs_info;
++ struct ubifs_budget_req req;
++ int oldflags, err;
++
++ mutex_lock(&inode->i_mutex);
++
++ memset(&req, 0 , sizeof(struct ubifs_budget_req));
++ err = ubifs_budget_inode_op(c, inode, &req);
++ if (err)
++ goto out;
++
++ /*
++ * The IMMUTABLE and APPEND_ONLY flags can only be changed by
++ * the relevant capability.
++ */
++ oldflags = ubifs2ioctl(ui->flags);
++ if ((flags ^ oldflags) & (FS_APPEND_FL | FS_IMMUTABLE_FL)) {
++ if (!capable(CAP_LINUX_IMMUTABLE)) {
++ err = -EPERM;
++ goto out_budg;
++ }
++ }
++
++ ui->flags = ioctl2ubifs(flags);
++ ubifs_set_inode_flags(inode);
++
++ inode->i_ctime = ubifs_current_time(inode);
++ mark_inode_dirty_sync(inode);
++
++ ubifs_release_ino_dirty(c, inode, &req);
++
++ if (IS_SYNC(inode))
++ err = write_inode_now(inode, 1);
++
++ mutex_unlock(&inode->i_mutex);
++ return err;
++
++out_budg:
++ ubifs_cancel_ino_op(c, inode, &req);
++out:
++ ubifs_err("can't modify inode %lu attributes", inode->i_ino);
++ mutex_unlock(&inode->i_mutex);
++ return err;
++}
++
++long ubifs_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
++{
++ int flags;
++ struct inode *inode = file->f_path.dentry->d_inode;
++
++ switch (cmd) {
++ case FS_IOC_GETFLAGS:
++ flags = ubifs2ioctl(ubifs_inode(inode)->flags);
++
++ return put_user(flags, (int __user *) arg);
++
++ case FS_IOC_SETFLAGS: {
++ if (IS_RDONLY(inode))
++ return -EROFS;
++
++ if (!is_owner_or_cap(inode))
++ return -EACCES;
++
++ if (get_user(flags, (int __user *) arg))
++ return -EFAULT;
++
++ if (!S_ISDIR(inode->i_mode))
++ flags &= ~FS_DIRSYNC_FL;
++
++ return setflags(inode, flags);
++ }
++
++ default:
++ return -ENOTTY;
++ }
++}
++
++#ifdef CONFIG_COMPAT
++long ubifs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
++{
++ int err;
++
++ switch (cmd) {
++ case FS_IOC32_GETFLAGS:
++ cmd = FS_IOC_GETFLAGS;
++ break;
++ case FS_IOC32_SETFLAGS:
++ cmd = FS_IOC_SETFLAGS;
++ break;
++ default:
++ return -ENOIOCTLCMD;
++ }
++
++ lock_kernel();
++ err = ubifs_ioctl(file, cmd, (unsigned long)compat_ptr(arg));
++ unlock_kernel();
++
++ return err;
++}
++#endif
+diff --exclude=.git -urN linux-2.6.25.6/fs/ubifs/journal.c avr32-2.6/fs/ubifs/journal.c
+--- linux-2.6.25.6/fs/ubifs/journal.c 1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/fs/ubifs/journal.c 2008-06-12 15:09:45.367815766 +0200
+@@ -0,0 +1,1286 @@
++/*
++ * This file is part of UBIFS.
++ *
++ * Copyright (C) 2006-2008 Nokia Corporation.
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published by
++ * the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but WITHOUT
++ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
++ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
++ * more details.
++ *
++ * You should have received a copy of the GNU General Public License along with
++ * this program; if not, write to the Free Software Foundation, Inc., 51
++ * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
++ *
++ * Authors: Artem Bityutskiy (Битюцкий Артём)
++ * Adrian Hunter
++ */
++
++/*
++ * This file implements UBIFS journal.
++ *
++ * The journal consists of 2 parts - the log and bud LEBs. The log has fixed
++ * length and position, while a bud logical eraseblock is any LEB in the main
++ * area. Buds contain file system data - data nodes, inode nodes, etc. The log
++ * contains only references to buds and some other stuff like commit
++ * start node. The idea is that when we commit the journal, we do
++ * not copy the data, the buds just become indexed. Since after the commit the
++ * nodes in bud eraseblocks become leaf nodes of the file system index tree, we
++ * use term "bud". Analogy is obvious, bud eraseblocks contain nodes which will
++ * become leafs in the future.
++ *
++ * The journal is multi-headed because we want to write data to the journal as
++ * optimally as possible. It is nice to have nodes belonging to the same inode
++ * in one LEB, so we may write data owned by different inodes to different
++ * journal heads, although at present only one data head is used.
++ *
++ * For recovery reasons, the base head contains all inode nodes, all directory
++ * entry nodes and all truncate nodes. This means that the other heads contain
++ * only data nodes.
++ *
++ * Bud LEBs may be half-indexed. For example, if the bud was not full at the
++ * time of commit, the bud is retained to continue to be used in the journal,
++ * even though the "front" of the LEB is now indexed. In that case, the log
++ * reference contains the offset where the bud starts for the purposes of the
++ * journal.
++ *
++ * The journal size has to be limited, because the larger is the journal, the
++ * longer it takes to mount UBIFS (scanning the journal) and the more memory it
++ * takes (indexing in the TNC).
++ *
++ * Note, all the journal write operations like 'ubifs_jnl_update()' here, which
++ * write multiple UBIFS nodes to the journal at one go, are atomic with respect
++ * to unclean reboots. Should the unclean reboot happen, the recovery code drops
++ * all the nodes.
++ */
++
++#include "ubifs.h"
++
++/**
++ * zero_ino_node_unused - zero out unused fields of an on-flash inode node.
++ * @ino: the inode to zero out
++ */
++static inline void zero_ino_node_unused(struct ubifs_ino_node *ino)
++{
++ memset(ino->padding, 0, 26);
++}
++
++/**
++ * zero_dent_node_unused - zero out unused fields of an on-flash directory
++ * entry node.
++ * @ino: the directory entry to zero out
++ */
++static inline void zero_dent_node_unused(struct ubifs_dent_node *dent)
++{
++ dent->padding1 = 0;
++ memset(dent->padding2, 0, 4);
++}
++
++/**
++ * zero_data_node_unused - zero out unused fields of an on-flash data node.
++ * @ino: the data node to zero out
++ */
++static inline void zero_data_node_unused(struct ubifs_data_node *data)
++{
++ memset(data->padding, 0, 2);
++}
++
++/**
++ * zero_trun_node_unused - zero out unused fields of an on-flash truncation
++ * node.
++ * @ino: the truncation node to zero out
++ */
++static inline void zero_trun_node_unused(struct ubifs_trun_node *trun)
++{
++ memset(trun->padding, 0, 12);
++}
++
++/**
++ * reserve_space - reserve space in the journal.
++ * @c: UBIFS file-system description object
++ * @jhead: journal head number
++ * @len: node length
++ *
++ * This function reserves space in journal head @head. If the reservation
++ * succeeded, the journal head stays locked and later has to be unlocked using
++ * 'release_head()'. 'write_node()' and 'write_head()' functions also unlock
++ * it. Returns zero in case of success, %-EAGAIN if commit has to be done, and
++ * other negative error codes in case of other failures.
++ */
++static int reserve_space(struct ubifs_info *c, int jhead, int len)
++{
++ int err = 0, err1, retries = 0, avail, lnum, offs, free, squeeze;
++ struct ubifs_wbuf *wbuf = &c->jheads[jhead].wbuf;
++
++ /*
++ * Typically, the base head has smaller nodes written to it, so it is
++ * better to try to allocate space at the ends of eraseblocks. This is
++ * what the squeeze parameter does.
++ */
++ squeeze = (jhead == BASEHD);
++again:
++ mutex_lock_nested(&wbuf->io_mutex, wbuf->jhead);
++ avail = c->leb_size - wbuf->offs - wbuf->used;
++
++ if (wbuf->lnum != -1 && avail >= len)
++ return 0;
++
++ /*
++ * Write buffer wasn't seek'ed or there is no enough space - look for an
++ * LEB with some empty space.
++ */
++ lnum = ubifs_find_free_space(c, len, &free, squeeze);
++ if (lnum >= 0) {
++ /* Found an LEB, add it to the journal head */
++ offs = c->leb_size - free;
++ err = ubifs_add_bud_to_log(c, jhead, lnum, offs);
++ if (err)
++ goto out_return;
++ /* A new bud was successfully allocated and added to the log */
++ goto out;
++ }
++
++ err = lnum;
++ if (err != -ENOSPC)
++ goto out_unlock;
++
++ /*
++ * No free space, we have to run garbage collector to make
++ * some. But the write-buffer mutex has to be unlocked because
++ * GC have to sync write buffers, which may lead a deadlock.
++ */
++ dbg_jnl("no free space jhead %d, run GC", jhead);
++ mutex_unlock(&wbuf->io_mutex);
++
++ lnum = ubifs_garbage_collect(c, 0);
++ if (lnum < 0) {
++ err = lnum;
++ if (err != -ENOSPC)
++ return err;
++
++ /*
++ * GC could not make a free LEB. But someone else may
++ * have allocated new bud for this journal head,
++ * because we dropped the 'io_mutex', so try once
++ * again.
++ */
++ dbg_jnl("GC couldn't make a free LEB for jhead %d", jhead);
++ if (retries++ < 2) {
++ dbg_jnl("retry (%d)", retries);
++ goto again;
++ }
++
++ dbg_jnl("return -ENOSPC");
++ return err;
++ }
++
++ mutex_lock_nested(&wbuf->io_mutex, wbuf->jhead);
++ dbg_jnl("got LEB %d for jhead %d", lnum, jhead);
++ avail = c->leb_size - wbuf->offs - wbuf->used;
++
++ if (wbuf->lnum != -1 && avail >= len) {
++ /*
++ * Someone else has switched the journal head and we have
++ * enough space now. This happens when more then one process is
++ * trying to write to the same journal head at the same time.
++ */
++ dbg_jnl("return LEB %d back, already have LEB %d:%d",
++ lnum, wbuf->lnum, wbuf->offs + wbuf->used);
++ err = ubifs_return_leb(c, lnum);
++ if (err)
++ goto out_unlock;
++ return 0;
++ }
++
++ err = ubifs_add_bud_to_log(c, jhead, lnum, 0);
++ if (err)
++ goto out_return;
++ offs = 0;
++
++out:
++ err = ubifs_wbuf_seek_nolock(wbuf, lnum, offs, UBI_SHORTTERM);
++ if (err)
++ goto out_unlock;
++
++ return 0;
++
++out_unlock:
++ mutex_unlock(&wbuf->io_mutex);
++ return err;
++
++out_return:
++ /* An error occurred and the LEB has to be returned to lprops */
++ ubifs_assert(err < 0);
++ err1 = ubifs_return_leb(c, lnum);
++ if (err1 && err == -EAGAIN)
++ /*
++ * Return original error code 'err' only if it is not
++ * '-EAGAIN', which is not really an error. Otherwise, return
++ * the error code of 'ubifs_return_leb()'.
++ */
++ err = err1;
++ mutex_unlock(&wbuf->io_mutex);
++ return err;
++}
++
++/**
++ * write_node - write node to a journal head.
++ * @c: UBIFS file-system description object
++ * @jhead: journal head
++ * @node: node to write
++ * @len: node length
++ * @lnum: LEB number written is returned here
++ * @offs: offset written is returned here
++ *
++ * This function writes a node to reserved space of journal head @jhead.
++ * Returns zero in case of success and a negative error code in case of
++ * failure.
++ */
++static int write_node(struct ubifs_info *c, int jhead, void *node, int len,
++ int *lnum, int *offs)
++{
++ struct ubifs_wbuf *wbuf = &c->jheads[jhead].wbuf;
++
++ ubifs_assert(jhead != GCHD);
++
++ *lnum = c->jheads[jhead].wbuf.lnum;
++ *offs = c->jheads[jhead].wbuf.offs + c->jheads[jhead].wbuf.used;
++
++ dbg_jnl("jhead %d, LEB %d:%d, len %d", jhead, *lnum, *offs, len);
++ ubifs_prepare_node(c, node, len, 0);
++
++ return ubifs_wbuf_write_nolock(wbuf, node, len);
++}
++
++/**
++ * write_head - write data to a journal head.
++ * @c: UBIFS file-system description object
++ * @jhead: journal head
++ * @buf: buffer to write
++ * @len: length to write
++ * @lnum: LEB number written is returned here
++ * @offs: offset written is returned here
++ * @sync: non-zero if the write-buffer has to by synchronized
++ *
++ * This function is the same as 'write_node()' but it does not assume the
++ * buffer it is writing is a node, so it does not prepare it (which means
++ * initializing common header and calculating CRC).
++ */
++static int write_head(struct ubifs_info *c, int jhead, void *buf, int len,
++ int *lnum, int *offs, int sync)
++{
++ int err;
++ struct ubifs_wbuf *wbuf = &c->jheads[jhead].wbuf;
++
++ ubifs_assert(jhead != GCHD);
++
++ *lnum = c->jheads[jhead].wbuf.lnum;
++ *offs = c->jheads[jhead].wbuf.offs + c->jheads[jhead].wbuf.used;
++ dbg_jnl("jhead %d, LEB %d:%d, len %d", jhead, *lnum, *offs, len);
++
++ err = ubifs_wbuf_write_nolock(wbuf, buf, len);
++ if (err)
++ return err;
++ if (sync)
++ err = ubifs_wbuf_sync_nolock(wbuf);
++ return err;
++}
++
++/**
++ * make_reservation - reserve journal space.
++ * @c: UBIFS file-system description object
++ * @jhead: journal head
++ * @len: how many bytes to reserve
++ *
++ * This function makes space reservation in journal head @jhead. The function
++ * takes the commit lock and locks the journal head, and the caller has to
++ * unlock the head and finish the reservation with 'finish_reservation()'.
++ * Returns zero in case of success and a negative error code in case of
++ * failure.
++ *
++ * Note, the journal head may be unlocked as soon as the data is written, while
++ * the commit lock has to be released after the data has been added to the
++ * TNC.
++ */
++static int make_reservation(struct ubifs_info *c, int jhead, int len)
++{
++ int err, cmt_retries = 0, nospc_retries = 0;
++
++ ubifs_assert(len <= c->dark_wm);
++
++again:
++ down_read(&c->commit_sem);
++ err = reserve_space(c, jhead, len);
++ if (!err)
++ return 0;
++ up_read(&c->commit_sem);
++
++ if (err == -ENOSPC) {
++ /*
++ * GC could not make any progress. We should try to commit
++ * once because it could make some dirty space and GC would
++ * make progress, so make the error -EAGAIN so that the below
++ * will commit and re-try.
++ */
++ if (nospc_retries++ < 2) {
++ dbg_jnl("no space, retry");
++ err = -EAGAIN;
++ }
++
++ /*
++ * This means that the budgeting is incorrect. We always have
++ * to be able to write to the media, because all operations are
++ * budgeted. Deletions are not budgeted, though, but we reserve
++ * an extra LEB for them.
++ */
++ }
++
++ if (err != -EAGAIN)
++ goto out;
++
++ /*
++ * -EAGAIN means that the journal is full or too large, or the above
++ * code wants to do one commit. Do this and re-try.
++ */
++ if (cmt_retries > 128) {
++ /*
++ * This should not happen unless the journal size limitations
++ * are too tough.
++ */
++ ubifs_err("stuck in space allocation");
++ err = -ENOSPC;
++ goto out;
++ } else if (cmt_retries > 32)
++ ubifs_warn("too many space allocation re-tries (%d)",
++ cmt_retries);
++
++ dbg_jnl("-EAGAIN, commit and retry (retried %d times)",
++ cmt_retries);
++ cmt_retries += 1;
++
++ err = ubifs_run_commit(c);
++ if (err)
++ return err;
++ goto again;
++
++out:
++ ubifs_err("cannot reserve %d bytes in jhead %d, error %d",
++ len, jhead, err);
++ if (err == -ENOSPC) {
++ /* This are some budgeting problems, print useful information */
++ down_write(&c->commit_sem);
++ spin_lock(&c->space_lock);
++ dbg_dump_stack();
++ dbg_dump_budg(c);
++ spin_unlock(&c->space_lock);
++ dbg_dump_lprops(c);
++ cmt_retries = dbg_check_lprops(c);
++ up_write(&c->commit_sem);
++ }
++
++ return err;
++}
++
++/**
++ * release_head - release a journal head.
++ * @c: UBIFS file-system description object
++ * @jhead: journal head
++ *
++ * This function releases journal head @jhead which was locked by
++ * the 'make_reservation()' function. It has to be called after each successful
++ * 'make_reservation()' invocation.
++ */
++static inline void release_head(struct ubifs_info *c, int jhead)
++{
++ mutex_unlock(&c->jheads[jhead].wbuf.io_mutex);
++}
++
++/**
++ * finish_reservation - finish a reservation.
++ * @c: UBIFS file-system description object
++ *
++ * This function finishes journal space reservation. It must be called after
++ * 'make_reservation()'.
++ */
++static void finish_reservation(struct ubifs_info *c)
++{
++ up_read(&c->commit_sem);
++}
++
++/**
++ * get_dent_type - translate VFS inode mode to UBIFS directory entry type.
++ * @mode: inode mode
++ */
++static int get_dent_type(int mode)
++{
++ switch (mode & S_IFMT) {
++ case S_IFREG:
++ return UBIFS_ITYPE_REG;
++ case S_IFDIR:
++ return UBIFS_ITYPE_DIR;
++ case S_IFLNK:
++ return UBIFS_ITYPE_LNK;
++ case S_IFBLK:
++ return UBIFS_ITYPE_BLK;
++ case S_IFCHR:
++ return UBIFS_ITYPE_CHR;
++ case S_IFIFO:
++ return UBIFS_ITYPE_FIFO;
++ case S_IFSOCK:
++ return UBIFS_ITYPE_SOCK;
++ default:
++ BUG();
++ }
++ return 0;
++}
++
++/**
++ * pack_inode - pack an inode node.
++ * @c: UBIFS file-system description object
++ * @ino: buffer in which to pack inode node
++ * @inode: inode to pack
++ * @last: indicates the last node of the group
++ * @last_reference: non-zero if this is a deletion inode
++ */
++static void pack_inode(struct ubifs_info *c, struct ubifs_ino_node *ino,
++ const struct inode *inode, int last, int last_reference)
++{
++ int data_len = 0;
++ struct ubifs_inode *ui = ubifs_inode(inode);
++
++ ino->ch.node_type = UBIFS_INO_NODE;
++ ino_key_init_flash(c, &ino->key, inode->i_ino);
++ ino->creat_sqnum = cpu_to_le64(ui->creat_sqnum);
++ ino->size = cpu_to_le64(i_size_read(inode));
++ ino->nlink = cpu_to_le32(inode->i_nlink);
++ ino->atime_sec = cpu_to_le64(inode->i_atime.tv_sec);
++ ino->atime_nsec = cpu_to_le32(inode->i_atime.tv_nsec);
++ ino->ctime_sec = cpu_to_le64(inode->i_ctime.tv_sec);
++ ino->ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec);
++ ino->mtime_sec = cpu_to_le64(inode->i_mtime.tv_sec);
++ ino->mtime_nsec = cpu_to_le32(inode->i_mtime.tv_nsec);
++ ino->uid = cpu_to_le32(inode->i_uid);
++ ino->gid = cpu_to_le32(inode->i_gid);
++ ino->mode = cpu_to_le32(inode->i_mode);
++ ino->flags = cpu_to_le32(ui->flags);
++ ino->compr_type = cpu_to_le16(ui->compr_type);
++ ino->xattr_cnt = cpu_to_le32(ui->xattr_cnt);
++ ino->xattr_size = cpu_to_le64(ui->xattr_size);
++ ino->xattr_names = cpu_to_le32(ui->xattr_names);
++ ino->data_len = cpu_to_le32(ui->data_len);
++ zero_ino_node_unused(ino);
++
++ /*
++ * Drop the attached data if this is a deletion inode, the data is not
++ * needed anymore.
++ */
++ if (!last_reference) {
++ memcpy(ino->data, ui->data, ui->data_len);
++ data_len = ui->data_len;
++ }
++
++ ubifs_prep_grp_node(c, ino, UBIFS_INO_NODE_SZ + data_len, last);
++}
++
++/**
++ * ubifs_jnl_update - update inode.
++ * @c: UBIFS file-system description object
++ * @dir: parent inode or host inode in case of extended attributes
++ * @nm: directory entry name
++ * @inode: inode
++ * @deletion: indicates a directory entry deletion i.e unlink or rmdir
++ * @sync: non-zero if the write-buffer has to be synchronized
++ * @xent: non-zero if the directory entry is an extended attribute entry
++ *
++ * This function updates an inode by writing a directory entry (or extended
++ * attribute entry), the inode itself, and the parent directory inode (or the
++ * host inode) to the journal.
++ *
++ * The function writes the host inode @dir last, which is important in case of
++ * extended attributes. Indeed, then we guarantee that if the host inode gets
++ * synchronized, and the write-buffer it sits in gets flushed, the extended
++ * attribute inode gets flushed too. And this is exactly what the user expects -
++ * synchronizing the host inode synchronizes its extended attributes.
++ * Similarly, this guarantees that if @dir is synchronized, its directory entry
++ * corresponding to @nm gets synchronized too.
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++int ubifs_jnl_update(struct ubifs_info *c, const struct inode *dir,
++ const struct qstr *nm, const struct inode *inode,
++ int deletion, int sync, int xent)
++{
++ int err, dlen, ilen, len, lnum, ino_offs, dent_offs;
++ int aligned_dlen, aligned_ilen;
++ int last_reference = !!(deletion && inode->i_nlink == 0);
++ struct ubifs_dent_node *dent;
++ struct ubifs_ino_node *ino;
++ union ubifs_key dent_key, ino_key;
++
++ dbg_jnl("ino %lu, dent '%.*s', data len %d in dir ino %lu",
++ inode->i_ino, nm->len, nm->name, ubifs_inode(inode)->data_len,
++ dir->i_ino);
++ ubifs_assert(ubifs_inode(dir)->data_len == 0);
++
++ dlen = UBIFS_DENT_NODE_SZ + nm->len + 1;
++ ilen = UBIFS_INO_NODE_SZ;
++
++ /*
++ * If the last reference to the inode is being deleted, then there is no
++ * need to attach and write inode data, it is being deleted anyway.
++ */
++ if (!last_reference)
++ ilen += ubifs_inode(inode)->data_len;
++
++ aligned_dlen = ALIGN(dlen, 8);
++ aligned_ilen = ALIGN(ilen, 8);
++
++ len = aligned_dlen + aligned_ilen + UBIFS_INO_NODE_SZ;
++
++ dent = kmalloc(len, GFP_NOFS);
++ if (!dent)
++ return -ENOMEM;
++
++ /* Make reservation before allocating sequence numbers */
++ err = make_reservation(c, BASEHD, len);
++ if (err)
++ goto out_free;
++
++ if (!xent) {
++ dent->ch.node_type = UBIFS_DENT_NODE;
++ dent_key_init(c, &dent_key, dir->i_ino, nm);
++ } else {
++ dent->ch.node_type = UBIFS_XENT_NODE;
++ xent_key_init(c, &dent_key, dir->i_ino, nm);
++ }
++
++ key_write(c, &dent_key, dent->key);
++ dent->inum = deletion ? 0 : cpu_to_le64(inode->i_ino);
++ dent->type = get_dent_type(inode->i_mode);
++ dent->nlen = cpu_to_le16(nm->len);
++ memcpy(dent->name, nm->name, nm->len);
++ dent->name[nm->len] = '\0';
++ zero_dent_node_unused(dent);
++ ubifs_prep_grp_node(c, dent, dlen, 0);
++
++ ino = (void *)dent + aligned_dlen;
++ pack_inode(c, ino, inode, 0, last_reference);
++
++ ino = (void *)ino + aligned_ilen;
++ pack_inode(c, ino, dir, 1, 0);
++
++ if (last_reference) {
++ err = ubifs_add_orphan(c, inode->i_ino);
++ if (err) {
++ release_head(c, BASEHD);
++ goto out_finish;
++ }
++ }
++
++ err = write_head(c, BASEHD, dent, len, &lnum, &dent_offs, sync);
++ if (!sync && !err) {
++ struct ubifs_wbuf *wbuf = &c->jheads[BASEHD].wbuf;
++
++ ubifs_wbuf_add_ino_nolock(wbuf, inode->i_ino);
++ ubifs_wbuf_add_ino_nolock(wbuf, dir->i_ino);
++ }
++ release_head(c, BASEHD);
++ kfree(dent);
++ if (err)
++ goto out_ro;
++
++ if (deletion) {
++ err = ubifs_tnc_remove_nm(c, &dent_key, nm);
++ if (err)
++ goto out_ro;
++ err = ubifs_add_dirt(c, lnum, dlen);
++ } else
++ err = ubifs_tnc_add_nm(c, &dent_key, lnum, dent_offs, dlen, nm);
++ if (err)
++ goto out_ro;
++
++ /*
++ * Note, we do not remove the inode from TNC even if the last reference
++ * to it has just been deleted, because the inode may still be opened.
++ * Instead, the inode has been added to orphan lists and the orphan
++ * subsystem will take further care about it.
++ */
++ ino_key_init(c, &ino_key, inode->i_ino);
++ ino_offs = dent_offs + aligned_dlen;
++ err = ubifs_tnc_add(c, &ino_key, lnum, ino_offs, ilen);
++ if (err)
++ goto out_ro;
++
++ ino_key_init(c, &ino_key, dir->i_ino);
++ ino_offs += aligned_ilen;
++ err = ubifs_tnc_add(c, &ino_key, lnum, ino_offs, UBIFS_INO_NODE_SZ);
++ if (err)
++ goto out_ro;
++
++ finish_reservation(c);
++ return 0;
++
++out_finish:
++ finish_reservation(c);
++out_free:
++ kfree(dent);
++ return err;
++
++out_ro:
++ ubifs_ro_mode(c, err);
++ if (last_reference)
++ ubifs_delete_orphan(c, inode->i_ino);
++ finish_reservation(c);
++ return err;
++}
++
++/**
++ * ubifs_jnl_write_data - write a data node to the journal.
++ * @c: UBIFS file-system description object
++ * @inode: inode the data node belongs to
++ * @key: node key
++ * @buf: buffer to write
++ * @len: data length (must not exceed %UBIFS_BLOCK_SIZE)
++ *
++ * This function writes a data node to the journal. Returns %0 if the data node
++ * was successfully written, and a negative error code in case of failure.
++ */
++int ubifs_jnl_write_data(struct ubifs_info *c, const struct inode *inode,
++ const union ubifs_key *key, const void *buf, int len)
++{
++ int err, lnum, offs, compr_type, out_len;
++ int dlen = UBIFS_DATA_NODE_SZ + UBIFS_BLOCK_SIZE * WORST_COMPR_FACTOR;
++ const struct ubifs_inode *ui = ubifs_inode(inode);
++ struct ubifs_data_node *data;
++
++ dbg_jnl("ino %lu, blk %u, len %d, key %s", key_inum(c, key),
++ key_block(c, key), len, DBGKEY(key));
++ ubifs_assert(len <= UBIFS_BLOCK_SIZE);
++
++ data = kmalloc(dlen, GFP_NOFS);
++ if (!data)
++ return -ENOMEM;
++
++ data->ch.node_type = UBIFS_DATA_NODE;
++ key_write(c, key, &data->key);
++ data->size = cpu_to_le32(len);
++ zero_data_node_unused(data);
++
++ if (!(ui->flags && UBIFS_COMPR_FL))
++ /* Compression is disabled for this inode */
++ compr_type = UBIFS_COMPR_NONE;
++ else
++ compr_type = ui->compr_type;
++
++ out_len = dlen - UBIFS_DATA_NODE_SZ;
++ ubifs_compress(buf, len, &data->data, &out_len, &compr_type);
++ ubifs_assert(out_len <= UBIFS_BLOCK_SIZE);
++
++ dlen = UBIFS_DATA_NODE_SZ + out_len;
++ data->compr_type = cpu_to_le16(compr_type);
++
++ /* Make reservation before allocating sequence numbers */
++ err = make_reservation(c, DATAHD, dlen);
++ if (err)
++ goto out_free;
++
++ err = write_node(c, DATAHD, data, dlen, &lnum, &offs);
++ if (!err)
++ ubifs_wbuf_add_ino_nolock(&c->jheads[DATAHD].wbuf,
++ key_inum(c, key));
++ release_head(c, DATAHD);
++ if (err)
++ goto out_ro;
++
++ err = ubifs_tnc_add(c, key, lnum, offs, dlen);
++ if (err)
++ goto out_ro;
++
++ finish_reservation(c);
++ kfree(data);
++ return 0;
++
++out_ro:
++ ubifs_ro_mode(c, err);
++ finish_reservation(c);
++out_free:
++ kfree(data);
++ return err;
++}
++
++/**
++ * ubifs_jnl_write_inode - flush inode to the journal.
++ * @c: UBIFS file-system description object
++ * @inode: inode to flush
++ * @last_reference: inode has been deleted
++ * @sync: non-zero if the write-buffer has to be synchronized
++ *
++ * This function writes inode @inode to the journal (to the base head). Returns
++ * zero in case of success and a negative error code in case of failure.
++ */
++int ubifs_jnl_write_inode(struct ubifs_info *c, const struct inode *inode,
++ int last_reference, int sync)
++{
++ int err, len, lnum, offs;
++ struct ubifs_ino_node *ino;
++ struct ubifs_inode *ui = ubifs_inode(inode);
++
++ dbg_jnl("ino %lu%s", inode->i_ino,
++ last_reference ? " (last reference)" : "");
++ if (last_reference)
++ ubifs_assert(inode->i_nlink == 0);
++
++ /* If the inode is deleted, do not write the attached data */
++ len = UBIFS_INO_NODE_SZ;
++ if (!last_reference)
++ len += ui->data_len;
++ ino = kmalloc(len, GFP_NOFS);
++ if (!ino)
++ return -ENOMEM;
++
++ /* Make reservation before allocating sequence numbers */
++ err = make_reservation(c, BASEHD, len);
++ if (err)
++ goto out_free;
++
++ pack_inode(c, ino, inode, 1, last_reference);
++
++ err = write_head(c, BASEHD, ino, len, &lnum, &offs, sync);
++ if (!sync && !err)
++ ubifs_wbuf_add_ino_nolock(&c->jheads[BASEHD].wbuf,
++ inode->i_ino);
++ release_head(c, BASEHD);
++ if (err)
++ goto out_ro;
++
++ if (last_reference) {
++ err = ubifs_tnc_remove_ino(c, inode->i_ino);
++ if (err)
++ goto out_ro;
++ ubifs_delete_orphan(c, inode->i_ino);
++ err = ubifs_add_dirt(c, lnum, len);
++ } else {
++ union ubifs_key key;
++
++ ino_key_init(c, &key, inode->i_ino);
++ err = ubifs_tnc_add(c, &key, lnum, offs, len);
++ }
++ if (err)
++ goto out_ro;
++
++ finish_reservation(c);
++ kfree(ino);
++ return 0;
++
++out_ro:
++ ubifs_ro_mode(c, err);
++ finish_reservation(c);
++out_free:
++ kfree(ino);
++ return err;
++}
++
++/**
++ * ubifs_jnl_rename - rename a directory entry.
++ * @c: UBIFS file-system description object
++ * @old_dir: parent inode of directory entry to rename
++ * @old_dentry: directory entry to rename
++ * @new_dir: parent inode of directory entry to rename
++ * @new_dentry: new directory entry (or directory entry to replace)
++ * @sync: non-zero if the write-buffer has to be synchronized
++ *
++ * Returns zero in case of success and a negative error code in case of failure.
++ */
++int ubifs_jnl_rename(struct ubifs_info *c, const struct inode *old_dir,
++ const struct dentry *old_dentry,
++ const struct inode *new_dir,
++ const struct dentry *new_dentry, int sync)
++{
++ const struct inode *old_inode = old_dentry->d_inode;
++ const struct inode *new_inode = new_dentry->d_inode;
++ int err, dlen1, dlen2, ilen, lnum, offs, len;
++ int aligned_dlen1, aligned_dlen2, plen = UBIFS_INO_NODE_SZ;
++ int last_reference = !!(new_inode && new_inode->i_nlink == 0);
++ struct ubifs_dent_node *dent, *dent2;
++ void *p;
++ union ubifs_key key;
++
++ dbg_jnl("dent '%.*s' in dir ino %lu to dent '%.*s' in dir ino %lu",
++ old_dentry->d_name.len, old_dentry->d_name.name,
++ old_dir->i_ino, new_dentry->d_name.len,
++ new_dentry->d_name.name, new_dir->i_ino);
++
++ ubifs_assert(ubifs_inode(old_dir)->data_len == 0);
++ ubifs_assert(ubifs_inode(new_dir)->data_len == 0);
++
++ dlen1 = UBIFS_DENT_NODE_SZ + new_dentry->d_name.len + 1;
++ dlen2 = UBIFS_DENT_NODE_SZ + old_dentry->d_name.len + 1;
++ if (new_inode) {
++ ilen = UBIFS_INO_NODE_SZ;
++ if (!last_reference)
++ ilen += ubifs_inode(new_inode)->data_len;
++ } else
++ ilen = 0;
++
++ aligned_dlen1 = ALIGN(dlen1, 8);
++ aligned_dlen2 = ALIGN(dlen2, 8);
++
++ len = aligned_dlen1 + aligned_dlen2 + ALIGN(ilen, 8) + ALIGN(plen, 8);
++ if (old_dir != new_dir)
++ len += plen;
++
++ dent = kmalloc(len, GFP_NOFS);
++ if (!dent)
++ return -ENOMEM;
++
++ /* Make reservation before allocating sequence numbers */
++ err = make_reservation(c, BASEHD, len);
++ if (err)
++ goto out_free;
++
++ /* Make new dent */
++ dent->ch.node_type = UBIFS_DENT_NODE;
++ dent_key_init_flash(c, &dent->key, new_dir->i_ino, &new_dentry->d_name);
++ dent->inum = cpu_to_le64(old_inode->i_ino);
++ dent->type = get_dent_type(old_inode->i_mode);
++ dent->nlen = cpu_to_le16(new_dentry->d_name.len);
++ memcpy(dent->name, new_dentry->d_name.name, new_dentry->d_name.len);
++ dent->name[new_dentry->d_name.len] = '\0';
++ zero_dent_node_unused(dent);
++ ubifs_prep_grp_node(c, dent, dlen1, 0);
++
++ dent2 = (void *)dent + aligned_dlen1;
++
++ /* Make deletion dent */
++ dent2->ch.node_type = UBIFS_DENT_NODE;
++ dent_key_init_flash(c, &dent2->key, old_dir->i_ino,
++ &old_dentry->d_name);
++ dent2->inum = 0;
++ dent2->type = DT_UNKNOWN;
++ dent2->nlen = cpu_to_le16(old_dentry->d_name.len);
++ memcpy(dent2->name, old_dentry->d_name.name, old_dentry->d_name.len);
++ dent2->name[old_dentry->d_name.len] = '\0';
++ zero_dent_node_unused(dent2);
++ ubifs_prep_grp_node(c, dent2, dlen2, 0);
++
++ p = (void *)dent2 + aligned_dlen2;
++ if (new_inode) {
++ pack_inode(c, p, new_inode, 0, last_reference);
++ p += ALIGN(ilen, 8);
++ }
++
++ if (old_dir == new_dir)
++ pack_inode(c, p, old_dir, 1, 0);
++ else {
++ pack_inode(c, p, old_dir, 0, 0);
++ p += ALIGN(plen, 8);
++ pack_inode(c, p, new_dir, 1, 0);
++ }
++
++ if (last_reference) {
++ err = ubifs_add_orphan(c, new_inode->i_ino);
++ if (err) {
++ release_head(c, BASEHD);
++ goto out_finish;
++ }
++ }
++
++ err = write_head(c, BASEHD, dent, len, &lnum, &offs, sync);
++ if (!sync && !err) {
++ struct ubifs_wbuf *wbuf = &c->jheads[BASEHD].wbuf;
++
++ ubifs_wbuf_add_ino_nolock(wbuf, new_dir->i_ino);
++ ubifs_wbuf_add_ino_nolock(wbuf, old_dir->i_ino);
++ if (new_inode)
++ ubifs_wbuf_add_ino_nolock(&c->jheads[BASEHD].wbuf,
++ new_inode->i_ino);
++ }
++ release_head(c, BASEHD);
++ if (err)
++ goto out_ro;
++
++ dent_key_init(c, &key, new_dir->i_ino, &new_dentry->d_name);
++ err = ubifs_tnc_add_nm(c, &key, lnum, offs, dlen1, &new_dentry->d_name);
++ if (err)
++ goto out_ro;
++
++ err = ubifs_add_dirt(c, lnum, dlen2);
++ if (err)
++ goto out_ro;
++
++ dent_key_init(c, &key, old_dir->i_ino, &old_dentry->d_name);
++ err = ubifs_tnc_remove_nm(c, &key, &old_dentry->d_name);
++ if (err)
++ goto out_ro;
++
++ offs += aligned_dlen1 + aligned_dlen2;
++ if (new_inode) {
++ ino_key_init(c, &key, new_inode->i_ino);
++ err = ubifs_tnc_add(c, &key, lnum, offs, ilen);
++ if (err)
++ goto out_ro;
++ offs += ALIGN(ilen, 8);
++ }
++
++ ino_key_init(c, &key, old_dir->i_ino);
++ err = ubifs_tnc_add(c, &key, lnum, offs, plen);
++ if (err)
++ goto out_ro;
++
++ if (old_dir != new_dir) {
++ offs += ALIGN(plen, 8);
++ ino_key_init(c, &key, new_dir->i_ino);
++ err = ubifs_tnc_add(c, &key, lnum, offs, plen);
++ if (err)
++ goto out_ro;
++ }
++
++ finish_reservation(c);
++ kfree(dent);
++ return 0;
++
++out_ro:
++ ubifs_ro_mode(c, err);
++ if (last_reference)
++ ubifs_delete_orphan(c, new_inode->i_ino);
++out_finish:
++ finish_reservation(c);
++out_free:
++ kfree(dent);
++ return err;
++}
++
++/**
++ * recomp_data_node - re-compress a truncated data node.
++ * @dn: data node to re-compress
++ * @new_len: new length
++ *
++ * This function is used when an inode is truncated and the last data node of
++ * the inode has to be re-compressed and re-written.
++ */
++static int recomp_data_node(struct ubifs_data_node *dn, int *new_len)
++{
++ void *buf;
++ int err, len, compr_type, out_len;
++
++ out_len = le32_to_cpu(dn->size);
++ buf = kmalloc(out_len * WORST_COMPR_FACTOR, GFP_NOFS);
++ if (!buf)
++ return -ENOMEM;
++
++ len = le32_to_cpu(dn->ch.len) - UBIFS_DATA_NODE_SZ;
++ compr_type = le16_to_cpu(dn->compr_type);
++ err = ubifs_decompress(&dn->data, len, buf, &out_len, compr_type);
++ if (err)
++ goto out;
++
++ ubifs_compress(buf, *new_len, &dn->data, &out_len, &compr_type);
++ ubifs_assert(out_len <= UBIFS_BLOCK_SIZE);
++ dn->compr_type = cpu_to_le16(compr_type);
++ dn->size = cpu_to_le32(*new_len);
++ *new_len = UBIFS_DATA_NODE_SZ + out_len;
++out:
++ kfree(buf);
++ return err;
++}
++
++/**
++ * ubifs_jnl_truncate - update the journal for a truncation.
++ * @c: UBIFS file-system description object
++ * @inum: inode number of inode being truncated
++ * @old_size: old size
++ * @new_size: new size
++ *
++ * When the size of a file decreases due to truncation, a truncation node is
++ * written, the journal tree is updated, and the last data block is re-written
++ * if it has been affected.
++ *
++ * This function returns %0 in the case of success, and a negative error code in
++ * case of failure.
++ */
++int ubifs_jnl_truncate(struct ubifs_info *c, ino_t inum,
++ loff_t old_size, loff_t new_size)
++{
++ union ubifs_key key, to_key;
++ struct ubifs_trun_node *trun;
++ struct ubifs_data_node *uninitialized_var(dn);
++ int err, dlen, len, lnum, offs, bit, sz;
++ unsigned int blk;
++
++ dbg_jnl("ino %lu, size %lld -> %lld", inum, old_size, new_size);
++
++ sz = UBIFS_TRUN_NODE_SZ + UBIFS_MAX_DATA_NODE_SZ * WORST_COMPR_FACTOR;
++ trun = kmalloc(sz, GFP_NOFS);
++ if (!trun)
++ return -ENOMEM;
++
++ trun->ch.node_type = UBIFS_TRUN_NODE;
++ trun->inum = cpu_to_le32(inum);
++ trun->old_size = cpu_to_le64(old_size);
++ trun->new_size = cpu_to_le64(new_size);
++ zero_trun_node_unused(trun);
++
++ dlen = new_size & (UBIFS_BLOCK_SIZE - 1);
++
++ if (dlen) {
++ /* Get last data block so it can be truncated */
++ dn = (void *)trun + ALIGN(UBIFS_TRUN_NODE_SZ, 8);
++ blk = new_size / UBIFS_BLOCK_SIZE;
++ data_key_init(c, &key, inum, blk);
++ dbg_jnl("last block key %s", DBGKEY(&key));
++ err = ubifs_tnc_lookup(c, &key, dn);
++ if (err == -ENOENT)
++ dlen = 0; /* Not found (so it is a hole) */
++ else if (err)
++ goto out_free;
++ else {
++ if (le32_to_cpu(dn->size) <= dlen)
++ dlen = 0; /* Nothing to do */
++ else {
++ int compr_type = le16_to_cpu(dn->compr_type);
++
++ if (compr_type != UBIFS_COMPR_NONE) {
++ err = recomp_data_node(dn, &dlen);
++ if (err)
++ goto out_free;
++ } else {
++ dn->size = cpu_to_le32(dlen);
++ dlen += UBIFS_DATA_NODE_SZ;
++ }
++ zero_data_node_unused(dn);
++ }
++ }
++ }
++
++ if (dlen)
++ len = ALIGN(UBIFS_TRUN_NODE_SZ, 8) + dlen;
++ else
++ len = UBIFS_TRUN_NODE_SZ;
++
++ /* Must make reservation before allocating sequence numbers */
++ err = make_reservation(c, BASEHD, len);
++ if (err)
++ goto out_free;
++
++ ubifs_prepare_node(c, trun, UBIFS_TRUN_NODE_SZ, 0);
++ if (dlen)
++ ubifs_prepare_node(c, dn, dlen, 0);
++
++ err = write_head(c, BASEHD, trun, len, &lnum, &offs, 0);
++ if (!err)
++ ubifs_wbuf_add_ino_nolock(&c->jheads[BASEHD].wbuf, inum);
++ release_head(c, BASEHD);
++ if (err)
++ goto out_ro;
++
++ if (dlen) {
++ offs += ALIGN(UBIFS_TRUN_NODE_SZ, 8);
++ err = ubifs_tnc_add(c, &key, lnum, offs, dlen);
++ if (err)
++ goto out_ro;
++ }
++
++ err = ubifs_add_dirt(c, lnum, UBIFS_TRUN_NODE_SZ);
++ if (err)
++ goto out_ro;
++
++ bit = new_size & (UBIFS_BLOCK_SIZE - 1);
++
++ blk = new_size / UBIFS_BLOCK_SIZE + (bit ? 1 : 0);
++ data_key_init(c, &key, inum, blk);
++
++ bit = old_size & (UBIFS_BLOCK_SIZE - 1);
++
++ blk = old_size / UBIFS_BLOCK_SIZE - (bit ? 0: 1);
++ data_key_init(c, &to_key, inum, blk);
++
++ err = ubifs_tnc_remove_range(c, &key, &to_key);
++ if (err)
++ goto out_ro;
++
++ finish_reservation(c);
++ kfree(trun);
++ return 0;
++
++out_ro:
++ ubifs_ro_mode(c, err);
++ finish_reservation(c);
++out_free:
++ kfree(trun);
++ return err;
++}
++
++#ifdef CONFIG_UBIFS_FS_XATTR
++
++int ubifs_jnl_delete_xattr(struct ubifs_info *c, const struct inode *host,
++ const struct inode *inode, const struct qstr *nm,
++ int sync)
++{
++ int err, xlen, hlen, len, lnum, xent_offs, aligned_xlen;
++ struct ubifs_dent_node *xent;
++ struct ubifs_ino_node *ino;
++ union ubifs_key xent_key, key1, key2;
++
++ dbg_jnl("host %lu, xattr ino %lu, name '%s', data len %d",
++ host->i_ino, inode->i_ino, nm->name,
++ ubifs_inode(inode)->data_len);
++ ubifs_assert(inode->i_nlink == 0);
++
++ /*
++ * Since we are deleting the inode, we do not bother to attach any data
++ * to it and assume its length is %UBIFS_INO_NODE_SZ.
++ */
++ xlen = UBIFS_DENT_NODE_SZ + nm->len + 1;
++ aligned_xlen = ALIGN(xlen, 8);
++ hlen = ubifs_inode(host)->data_len + UBIFS_INO_NODE_SZ;
++ len = aligned_xlen + UBIFS_INO_NODE_SZ + ALIGN(hlen, 8);
++
++ xent = kmalloc(len, GFP_NOFS);
++ if (!xent)
++ return -ENOMEM;
++
++ /* Make reservation before allocating sequence numbers */
++ err = make_reservation(c, BASEHD, len);
++ if (err) {
++ kfree(xent);
++ return err;
++ }
++
++ xent->ch.node_type = UBIFS_XENT_NODE;
++ xent_key_init(c, &xent_key, host->i_ino, nm);
++ key_write(c, &xent_key, xent->key);
++ xent->inum = 0;
++ xent->type = get_dent_type(inode->i_mode);
++ xent->nlen = cpu_to_le16(nm->len);
++ memcpy(xent->name, nm->name, nm->len);
++ xent->name[nm->len] = '\0';
++ zero_dent_node_unused(xent);
++ ubifs_prep_grp_node(c, xent, xlen, 0);
++
++ ino = (void *)xent + aligned_xlen;
++ pack_inode(c, ino, inode, 0, 1);
++
++ ino = (void *)ino + UBIFS_INO_NODE_SZ;
++ pack_inode(c, ino, host, 1, 0);
++
++ err = write_head(c, BASEHD, xent, len, &lnum, &xent_offs, sync);
++ if (!sync && !err)
++ ubifs_wbuf_add_ino_nolock(&c->jheads[BASEHD].wbuf, host->i_ino);
++ release_head(c, BASEHD);
++ kfree(xent);
++ if (err)
++ goto out_ro;
++
++ /* Remove the extended attribute entry from TNC */
++ err = ubifs_tnc_remove_nm(c, &xent_key, nm);
++ if (err)
++ goto out_ro;
++ err = ubifs_add_dirt(c, lnum, xlen);
++ if (err)
++ goto out_ro;
++
++ /*
++ * Remove all nodes belonging to the extended attribute inode from TNC.
++ * Well, there actually must be only one node - the inode itself.
++ */
++ lowest_ino_key(c, &key1, inode->i_ino);
++ highest_ino_key(c, &key2, inode->i_ino);
++ err = ubifs_tnc_remove_range(c, &key1, &key2);
++ if (err)
++ goto out_ro;
++ err = ubifs_add_dirt(c, lnum, UBIFS_INO_NODE_SZ);
++ if (err)
++ goto out_ro;
++
++ /* And update TNC with the new host inode position */
++ ino_key_init(c, &key1, host->i_ino);
++ err = ubifs_tnc_add(c, &key1, lnum, xent_offs + len - hlen, hlen);
++ if (err)
++ goto out_ro;
++
++ finish_reservation(c);
++ return 0;
++
++out_ro:
++ ubifs_ro_mode(c, err);
++ finish_reservation(c);
++ return err;
++}
++
++/**
++ * ubifs_jnl_write_2_inodes - write 2 inodes to the journal.
++ * @c: UBIFS file-system description object
++ * @inode1: first inode to write
++ * @inode2: second inode to write
++ * @sync: non-zero if the write-buffer has to be synchronized
++ *
++ * This function writes 2 inodes @inode1 and @inode2 to the journal (to the
++ * base head - first @inode1, then @inode2). Returns zero in case of success
++ * and a negative error code in case of failure.
++ */
++int ubifs_jnl_write_2_inodes(struct ubifs_info *c, const struct inode *inode1,
++ const struct inode *inode2, int sync)
++{
++ int err, len1, len2, aligned_len, aligned_len1, lnum, offs;
++ struct ubifs_ino_node *ino;
++ union ubifs_key key;
++
++ dbg_jnl("ino %lu, ino %lu", inode1->i_ino, inode2->i_ino);
++ ubifs_assert(inode1->i_nlink > 0);
++ ubifs_assert(inode2->i_nlink > 0);
++
++ len1 = UBIFS_INO_NODE_SZ + ubifs_inode(inode1)->data_len;
++ len2 = UBIFS_INO_NODE_SZ + ubifs_inode(inode2)->data_len;
++ aligned_len1 = ALIGN(len1, 8);
++ aligned_len = aligned_len1 + ALIGN(len2, 8);
++
++ ino = kmalloc(aligned_len, GFP_NOFS);
++ if (!ino)
++ return -ENOMEM;
++
++ /* Make reservation before allocating sequence numbers */
++ err = make_reservation(c, BASEHD, aligned_len);
++ if (err)
++ goto out_free;
++
++ pack_inode(c, ino, inode1, 0, 0);
++ pack_inode(c, (void *)ino + aligned_len1, inode2, 1, 0);
++
++ err = write_head(c, BASEHD, ino, aligned_len, &lnum, &offs, 0);
++ if (!sync && !err) {
++ struct ubifs_wbuf *wbuf = &c->jheads[BASEHD].wbuf;
++
++ ubifs_wbuf_add_ino_nolock(wbuf, inode1->i_ino);
++ ubifs_wbuf_add_ino_nolock(wbuf, inode2->i_ino);
++ }
++ release_head(c, BASEHD);
++ if (err)
++ goto out_ro;
++
++ ino_key_init(c, &key, inode1->i_ino);
++ err = ubifs_tnc_add(c, &key, lnum, offs, len1);
++ if (err)
++ goto out_ro;
++
++ ino_key_init(c, &key, inode2->i_ino);
++ err = ubifs_tnc_add(c, &key, lnum, offs + aligned_len1, len2);
++ if (err)
++ goto out_ro;
++
++ finish_reservation(c);
++ kfree(ino);
++ return 0;
++
++out_ro:
++ ubifs_ro_mode(c, err);
++ finish_reservation(c);
++out_free:
++ kfree(ino);
++ return err;
++}
++
++#endif /* CONFIG_UBIFS_FS_XATTR */
+diff --exclude=.git -urN linux-2.6.25.6/fs/ubifs/Kconfig avr32-2.6/fs/ubifs/Kconfig
+--- linux-2.6.25.6/fs/ubifs/Kconfig 1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/fs/ubifs/Kconfig 2008-06-12 15:09:45.311815896 +0200
+@@ -0,0 +1,72 @@
++config UBIFS_FS
++ tristate "UBIFS file system support"
++ select CRC16
++ select CRC32
++ select CRYPTO if UBIFS_FS_ADVANCED_COMPR
++ select CRYPTO if UBIFS_FS_LZO
++ select CRYPTO if UBIFS_FS_ZLIB
++ select CRYPTO_LZO if UBIFS_FS_LZO
++ select CRYPTO_DEFLATE if UBIFS_FS_ZLIB
++ depends on MTD_UBI
++ help
++ UBIFS is a file system for flash devices which works on top of UBI.
++
++config UBIFS_FS_XATTR
++ bool "Extended attributes support"
++ depends on UBIFS_FS
++ help
++ This option enables support of extended attributes.
++
++config UBIFS_FS_ADVANCED_COMPR
++ bool "Advanced compression options"
++ depends on UBIFS_FS
++ help
++ This option allows to explicitly choose which compressions, if any,
++ are enabled in UBIFS. Removing compressors means inbility to read
++ existing file systems.
++
++ If unsure, say 'N'.
++
++config UBIFS_FS_LZO
++ bool "LZO compression support" if UBIFS_FS_ADVANCED_COMPR
++ depends on UBIFS_FS
++ default y
++ help
++ LZO compressor is generally faster then zlib but compresses worse.
++ Say 'Y' if unsure.
++
++config UBIFS_FS_ZLIB
++ bool "ZLIB compression support" if UBIFS_FS_ADVANCED_COMPR
++ depends on UBIFS_FS
++ default y
++ help
++ Zlib copresses better then LZO but it is slower. Say 'Y' if unsure.
++
++# Debugging-related stuff
++config UBIFS_FS_DEBUG
++ bool "Enable debugging"
++ depends on UBIFS_FS
++ select DEBUG_FS
++ select KALLSYMS_ALL
++ help
++ This option enables UBIFS debugging.
++
++config UBIFS_FS_DEBUG_MSG_LVL
++ int "Default message level (0 = no extra messages, 3 = lots)"
++ depends on UBIFS_FS_DEBUG
++ default "0"
++ help
++ This controls the amount of debugging messages produced by UBIFS.
++ If reporting bugs, please try to have available a full dump of the
++ messages at level 1 while the misbehaviour was occurring. Level 2
++ may become necessary if level 1 messages were not enough to find the
++ bug. Generally Level 3 should be avoided.
++
++config UBIFS_FS_DEBUG_CHKS
++ bool "Enable extra checks"
++ depends on UBIFS_FS_DEBUG
++ help
++ If extra checks are enabled UBIFS will check the consistency of its
++ internal data structures during operation. However, UBIFS performance
++ is dramatically slower when this option is selected especially if the
++ file system is large.
+diff --exclude=.git -urN linux-2.6.25.6/fs/ubifs/key.h avr32-2.6/fs/ubifs/key.h
+--- linux-2.6.25.6/fs/ubifs/key.h 1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/fs/ubifs/key.h 2008-06-12 15:09:45.367815766 +0200
+@@ -0,0 +1,533 @@
++/*
++ * This file is part of UBIFS.
++ *
++ * Copyright (C) 2006-2008 Nokia Corporation.
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published by
++ * the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but WITHOUT
++ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
++ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
++ * more details.
++ *
++ * You should have received a copy of the GNU General Public License along with
++ * this program; if not, write to the Free Software Foundation, Inc., 51
++ * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
++ *
++ * Authors: Artem Bityutskiy (Битюцкий Артём)
++ * Adrian Hunter
++ */
++
++/*
++ * This header contains various key-related definitions and helper function.
++ * UBIFS allows several key schemes, so we access key fields only via these
++ * helpers. At the moment only one key scheme is supported.
++ *
++ * Simple key scheme
++ * ~~~~~~~~~~~~~~~~~
++ *
++ * Keys are 64-bits long. First 32-bits are inode number (parent inode number
++ * in case of direntry key). Next 3 bits are node type. The last 29 bits are
++ * 4KiB offset in case of inode node, and direntry hash in case of a direntry
++ * node. We use "r5" hash borrowed from reiserfs.
++ */
++
++#ifndef __UBIFS_KEY_H__
++#define __UBIFS_KEY_H__
++
++/**
++ * key_r5_hash - R5 hash function (borrowed from reiserfs).
++ * @s: direntry name
++ * @len: name length
++ */
++static inline uint32_t key_r5_hash(const char *s, int len)
++{
++ uint32_t a = 0;
++ const signed char *str = (const signed char *)s;
++
++ while (*str) {
++ a += *str << 4;
++ a += *str >> 4;
++ a *= 11;
++ str++;
++ }
++
++ a &= UBIFS_S_KEY_HASH_MASK;
++
++ /*
++ * We use hash values as offset in directories, so values %0 and %1 are
++ * reserved for "." and "..". %2 is reserved for "end of readdir"
++ * marker.
++ */
++ if (unlikely(a >= 0 && a <= 2))
++ a += 3;
++ return a;
++}
++
++/**
++ * key_test_hash - testing hash function.
++ * @str: direntry name
++ * @len: name length
++ */
++static inline uint32_t key_test_hash(const char *str, int len)
++{
++ uint32_t a = 0;
++
++ len = min_t(uint32_t, len, 4);
++ memcpy(&a, str, len);
++ a &= UBIFS_S_KEY_HASH_MASK;
++ if (unlikely(a >= 0 && a <= 2))
++ a += 3;
++ return a;
++}
++
++/**
++ * ino_key_init - initialize inode key.
++ * @c: UBIFS file-system description object
++ * @key: key to initialize
++ * @inum: inode number
++ */
++static inline void ino_key_init(const struct ubifs_info *c,
++ union ubifs_key *key, ino_t inum)
++{
++ key->u32[0] = inum;
++ key->u32[1] = UBIFS_INO_KEY << UBIFS_S_KEY_BLOCK_BITS;
++}
++
++/**
++ * ino_key_init_flash - initialize on-flash inode key.
++ * @c: UBIFS file-system description object
++ * @k: key to initialize
++ * @inum: inode number
++ */
++static inline void ino_key_init_flash(const struct ubifs_info *c, void *k,
++ ino_t inum)
++{
++ union ubifs_key *key = k;
++
++ key->j32[0] = cpu_to_le32(inum);
++ key->j32[1] = cpu_to_le32(UBIFS_INO_KEY << UBIFS_S_KEY_BLOCK_BITS);
++ memset(k + 8, 0, UBIFS_MAX_KEY_LEN - 8);
++}
++
++/**
++ * lowest_ino_key - get the lowest possible inode key.
++ * @c: UBIFS file-system description object
++ * @key: key to initialize
++ * @inum: inode number
++ */
++static inline void lowest_ino_key(const struct ubifs_info *c,
++ union ubifs_key *key, ino_t inum)
++{
++ key->u32[0] = inum;
++ key->u32[1] = 0;
++}
++
++/**
++ * highest_ino_key - get the highest possible inode key.
++ * @c: UBIFS file-system description object
++ * @key: key to initialize
++ * @inum: inode number
++ */
++static inline void highest_ino_key(const struct ubifs_info *c,
++ union ubifs_key *key, ino_t inum)
++{
++ key->u32[0] = inum;
++ key->u32[1] = 0xffffffff;
++}
++
++/**
++ * dent_key_init - initialize directory entry key.
++ * @c: UBIFS file-system description object
++ * @key: key to initialize
++ * @inum: parent inode number
++ * @nm: direntry name and length
++ */
++static inline void dent_key_init(const struct ubifs_info *c,
++ union ubifs_key *key, ino_t inum,
++ const struct qstr *nm)
++{
++ uint32_t hash = c->key_hash(nm->name, nm->len);
++
++ ubifs_assert(!(hash & ~UBIFS_S_KEY_HASH_MASK));
++ key->u32[0] = inum;
++ key->u32[1] = hash | (UBIFS_DENT_KEY << UBIFS_S_KEY_HASH_BITS);
++}
++
++/**
++ * dent_key_init_hash - initialize directory entry key without re-calculating
++ * hash function.
++ * @c: UBIFS file-system description object
++ * @key: key to initialize
++ * @inum: parent inode number
++ * @hash: direntry name hash
++ */
++static inline void dent_key_init_hash(const struct ubifs_info *c,
++ union ubifs_key *key, ino_t inum,
++ uint32_t hash)
++{
++ ubifs_assert(!(hash & ~UBIFS_S_KEY_HASH_MASK));
++ key->u32[0] = inum;
++ key->u32[1] = hash | (UBIFS_DENT_KEY << UBIFS_S_KEY_HASH_BITS);
++}
++
++/**
++ * dent_key_init_flash - initialize on-flash directory entry key.
++ * @c: UBIFS file-system description object
++ * @k: key to initialize
++ * @inum: parent inode number
++ * @nm: direntry name and length
++ */
++static inline void dent_key_init_flash(const struct ubifs_info *c, void *k,
++ ino_t inum, const struct qstr *nm)
++{
++ union ubifs_key *key = k;
++ uint32_t hash = c->key_hash(nm->name, nm->len);
++
++ ubifs_assert(!(hash & ~UBIFS_S_KEY_HASH_MASK));
++ key->j32[0] = cpu_to_le32(inum);
++ key->j32[1] = cpu_to_le32(hash |
++ (UBIFS_DENT_KEY << UBIFS_S_KEY_HASH_BITS));
++ memset(k + 8, 0, UBIFS_MAX_KEY_LEN - 8);
++}
++
++/**
++ * lowest_dent_key - get the lowest possible directory entry key.
++ * @c: UBIFS file-system description object
++ * @key: where to store the lowest key
++ * @inum: parent inode number
++ */
++static inline void lowest_dent_key(const struct ubifs_info *c,
++ union ubifs_key *key, ino_t inum)
++{
++ key->u32[0] = inum;
++ key->u32[1] = UBIFS_DENT_KEY << UBIFS_S_KEY_HASH_BITS;
++}
++
++/**
++ * xent_key_init - initialize extended attribute entry key.
++ * @c: UBIFS file-system description object
++ * @key: key to initialize
++ * @inum: host inode number
++ * @nm: extended attribute entry name and length
++ */
++static inline void xent_key_init(const struct ubifs_info *c,
++ union ubifs_key *key, ino_t inum,
++ const struct qstr *nm)
++{
++ uint32_t hash = c->key_hash(nm->name, nm->len);
++
++ ubifs_assert(!(hash & ~UBIFS_S_KEY_HASH_MASK));
++ key->u32[0] = inum;
++ key->u32[1] = hash | (UBIFS_XENT_KEY << UBIFS_S_KEY_HASH_BITS);
++}
++
++/**
++ * xent_key_init_hash - initialize extended attribute entry key without
++ * re-calculating hash function.
++ * @c: UBIFS file-system description object
++ * @key: key to initialize
++ * @inum: host inode number
++ * @hash: extended attribute entry name hash
++ */
++static inline void xent_key_init_hash(const struct ubifs_info *c,
++ union ubifs_key *key, ino_t inum,
++ uint32_t hash)
++{
++ ubifs_assert(!(hash & ~UBIFS_S_KEY_HASH_MASK));
++ key->u32[0] = inum;
++ key->u32[1] = hash | (UBIFS_XENT_KEY << UBIFS_S_KEY_HASH_BITS);
++}
++
++/**
++ * xent_key_init_flash - initialize on-flash extended attribute entry key.
++ * @c: UBIFS file-system description object
++ * @k: key to initialize
++ * @inum: host inode number
++ * @nm: extended attribute entry name and length
++ */
++static inline void xent_key_init_flash(const struct ubifs_info *c, void *k,
++ ino_t inum, const struct qstr *nm)
++{
++ union ubifs_key *key = k;
++ uint32_t hash = c->key_hash(nm->name, nm->len);
++
++ ubifs_assert(!(hash & ~UBIFS_S_KEY_HASH_MASK));
++ key->j32[0] = cpu_to_le32(inum);
++ key->j32[1] = cpu_to_le32(hash |
++ (UBIFS_XENT_KEY << UBIFS_S_KEY_HASH_BITS));
++ memset(k + 8, 0, UBIFS_MAX_KEY_LEN - 8);
++}
++
++/**
++ * lowest_xent_key - get the lowest possible extended attribute entry key.
++ * @c: UBIFS file-system description object
++ * @key: where to store the lowest key
++ * @inum: host inode number
++ */
++static inline void lowest_xent_key(const struct ubifs_info *c,
++ union ubifs_key *key, ino_t inum)
++{
++ key->u32[0] = inum;
++ key->u32[1] = UBIFS_XENT_KEY << UBIFS_S_KEY_HASH_BITS;
++}
++
++/**
++ * data_key_init - initialize data key.
++ * @c: UBIFS file-system description object
++ * @key: key to initialize
++ * @inum: inode number
++ * @block: block number
++ */
++static inline void data_key_init(const struct ubifs_info *c,
++ union ubifs_key *key, ino_t inum,
++ unsigned int block)
++{
++ ubifs_assert(!(block & ~UBIFS_S_KEY_BLOCK_MASK));
++ key->u32[0] = inum;
++ key->u32[1] = block | (UBIFS_DATA_KEY << UBIFS_S_KEY_BLOCK_BITS);
++}
++
++/**
++ * data_key_init_flash - initialize on-flash data key.
++ * @c: UBIFS file-system description object
++ * @k: key to initialize
++ * @inum: inode number
++ * @block: block number
++ */
++static inline void data_key_init_flash(const struct ubifs_info *c, void *k,
++ ino_t inum, unsigned int block)
++{
++ union ubifs_key *key = k;
++
++ ubifs_assert(!(block & ~UBIFS_S_KEY_BLOCK_MASK));
++ key->j32[0] = cpu_to_le32(inum);
++ key->j32[1] = cpu_to_le32(block |
++ (UBIFS_DATA_KEY << UBIFS_S_KEY_BLOCK_BITS));
++ memset(k + 8, 0, UBIFS_MAX_KEY_LEN - 8);
++}
++
++/**
++ * trun_key_init - initialize truncation node key.
++ * @c: UBIFS file-system description object
++ * @key: key to initialize
++ * @inum: inode number
++ *
++ * Note, UBIFS does not have truncation keys on the media and this function is
++ * only used for purposes of replay.
++ */
++static inline void trun_key_init(const struct ubifs_info *c,
++ union ubifs_key *key, ino_t inum)
++{
++ key->u32[0] = inum;
++ key->u32[1] = UBIFS_TRUN_KEY << UBIFS_S_KEY_BLOCK_BITS;
++}
++
++/**
++ * key_type - get key type.
++ * @c: UBIFS file-system description object
++ * @key: key to get type of
++ */
++static inline int key_type(const struct ubifs_info *c,
++ const union ubifs_key *key)
++{
++ return key->u32[1] >> UBIFS_S_KEY_BLOCK_BITS;
++}
++
++/**
++ * key_type_flash - get type of a on-flash formatted key.
++ * @c: UBIFS file-system description object
++ * @k: key to get type of
++ */
++static inline int key_type_flash(const struct ubifs_info *c, const void *k)
++{
++ const union ubifs_key *key = k;
++
++ return le32_to_cpu(key->u32[1]) >> UBIFS_S_KEY_BLOCK_BITS;
++}
++
++/**
++ * key_inum - fetch inode number from key.
++ * @c: UBIFS file-system description object
++ * @k: key to fetch inode number from
++ */
++static inline ino_t key_inum(const struct ubifs_info *c, const void *k)
++{
++ const union ubifs_key *key = k;
++
++ return key->u32[0];
++}
++
++/**
++ * key_inum_flash - fetch inode number from an on-flash formatted key.
++ * @c: UBIFS file-system description object
++ * @k: key to fetch inode number from
++ */
++static inline ino_t key_inum_flash(const struct ubifs_info *c, const void *k)
++{
++ const union ubifs_key *key = k;
++
++ return le32_to_cpu(key->j32[0]);
++}
++
++/**
++ * key_hash - get directory entry hash.
++ * @c: UBIFS file-system description object
++ * @key: the key to get hash from
++ */
++static inline int key_hash(const struct ubifs_info *c,
++ const union ubifs_key *key)
++{
++ return key->u32[1] & UBIFS_S_KEY_HASH_MASK;
++}
++
++/**
++ * key_hash_flash - get directory entry hash from an on-flash formatted key.
++ * @c: UBIFS file-system description object
++ * @k: the key to get hash from
++ */
++static inline int key_hash_flash(const struct ubifs_info *c, const void *k)
++{
++ const union ubifs_key *key = k;
++
++ return le32_to_cpu(key->j32[1]) & UBIFS_S_KEY_HASH_MASK;
++}
++
++/**
++ * key_block - get data block number.
++ * @c: UBIFS file-system description object
++ * @key: the key to get the block number from
++ */
++static inline unsigned int key_block(const struct ubifs_info *c,
++ const union ubifs_key *key)
++{
++ return key->u32[1] & UBIFS_S_KEY_BLOCK_MASK;
++}
++
++/**
++ * key_block_flash - get data block number from an on-flash formatted key.
++ * @c: UBIFS file-system description object
++ * @k: the key to get the block number from
++ */
++static inline unsigned int key_block_flash(const struct ubifs_info *c,
++ const void *k)
++{
++ const union ubifs_key *key = k;
++
++ return le32_to_cpu(key->u32[1]) & UBIFS_S_KEY_BLOCK_MASK;
++}
++
++/**
++ * key_read - transform a key to in-memory format.
++ * @c: UBIFS file-system description object
++ * @from: the key to transform
++ * @to: the key to store the result
++ */
++static inline void key_read(const struct ubifs_info *c, const void *from,
++ union ubifs_key *to)
++{
++ const union ubifs_key *f = from;
++
++ to->u32[0] = le32_to_cpu(f->j32[0]);
++ to->u32[1] = le32_to_cpu(f->j32[1]);
++}
++
++/**
++ * key_write - transform a key from in-memory format.
++ * @c: UBIFS file-system description object
++ * @from: the key to transform
++ * @to: the key to store the result
++ */
++static inline void key_write(const struct ubifs_info *c,
++ const union ubifs_key *from, void *to)
++{
++ union ubifs_key *t = to;
++
++ t->j32[0] = cpu_to_le32(from->u32[0]);
++ t->j32[1] = cpu_to_le32(from->u32[1]);
++ memset(to + 8, 0, UBIFS_MAX_KEY_LEN - 8);
++}
++
++/**
++ * key_write_idx - transform a key from in-memory format for the index.
++ * @c: UBIFS file-system description object
++ * @from: the key to transform
++ * @to: the key to store the result
++ */
++static inline void key_write_idx(const struct ubifs_info *c,
++ const union ubifs_key *from, void *to)
++{
++ union ubifs_key *t = to;
++
++ t->j32[0] = cpu_to_le32(from->u32[0]);
++ t->j32[1] = cpu_to_le32(from->u32[1]);
++}
++
++/**
++ * key_copy - copy a key.
++ * @c: UBIFS file-system description object
++ * @from: the key to copy from
++ * @to: the key to copy to
++ */
++static inline void key_copy(const struct ubifs_info *c,
++ const union ubifs_key *from, union ubifs_key *to)
++{
++ to->u64[0] = from->u64[0];
++}
++
++/**
++ * keys_cmp - compare keys.
++ * @c: UBIFS file-system description object
++ * @key1: the first key to compare
++ * @key2: the second key to compare
++ *
++ * This function compares 2 keys and returns %-1 if @key1 is less than
++ * @key2, 0 if the keys are equivalent and %1 if @key1 is greater than @key2.
++ */
++static inline int keys_cmp(const struct ubifs_info *c,
++ const union ubifs_key *key1,
++ const union ubifs_key *key2)
++{
++ if (key1->u32[0] < key2->u32[0])
++ return -1;
++ if (key1->u32[0] > key2->u32[0])
++ return 1;
++ if (key1->u32[1] < key2->u32[1])
++ return -1;
++ if (key1->u32[1] > key2->u32[1])
++ return 1;
++
++ return 0;
++}
++
++/**
++ * is_hash_key - is a key vulnerable to hash collisions.
++ * @c: UBIFS file-system description object
++ * @key: key
++ *
++ * This function returns %1 if @key is a hashed key or %0 otherwise.
++ */
++static inline int is_hash_key(const struct ubifs_info *c,
++ const union ubifs_key *key)
++{
++ int type = key_type(c, key);
++
++ return type == UBIFS_DENT_KEY || type == UBIFS_XENT_KEY;
++}
++
++/**
++ * key_max_inode_size - get maximum file size allowed by current key format.
++ * @c: UBIFS file-system description object
++ */
++static inline unsigned long long key_max_inode_size(const struct ubifs_info *c)
++{
++ switch (c->key_fmt) {
++ case UBIFS_SIMPLE_KEY_FMT:
++ return (1ULL << UBIFS_S_KEY_BLOCK_BITS) * UBIFS_BLOCK_SIZE;
++ default:
++ return 0;
++ }
++}
++#endif /* !__UBIFS_KEY_H__ */
+diff --exclude=.git -urN linux-2.6.25.6/fs/ubifs/log.c avr32-2.6/fs/ubifs/log.c
+--- linux-2.6.25.6/fs/ubifs/log.c 1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/fs/ubifs/log.c 2008-06-12 15:09:45.367815766 +0200
+@@ -0,0 +1,799 @@
++/*
++ * This file is part of UBIFS.
++ *
++ * Copyright (C) 2006-2008 Nokia Corporation.
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published by
++ * the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but WITHOUT
++ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
++ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
++ * more details.
++ *
++ * You should have received a copy of the GNU General Public License along with
++ * this program; if not, write to the Free Software Foundation, Inc., 51
++ * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
++ *
++ * Authors: Artem Bityutskiy (Битюцкий Артём)
++ * Adrian Hunter
++ */
++
++/*
++ * This file is a part of UBIFS journal implementation and contains various
++ * functions which manipulate the log. The log is a fixed area on the flash
++ * which does not contain any data but refers to buds. The log is a part of the
++ * journal.
++ */
++
++#include "ubifs.h"
++
++#ifdef CONFIG_UBIFS_FS_DEBUG
++static int dbg_check_bud_bytes(struct ubifs_info *c);
++#else
++#define dbg_check_bud_bytes(c) 0
++#endif
++
++/**
++ * ubifs_search_bud - search bud LEB.
++ * @c: UBIFS file-system description object
++ * @lnum: logical eraseblock number to search
++ *
++ * This function searches bud LEB @lnum. Returns bud description object in case
++ * of success and %NULL if there is no bud with this LEB number.
++ */
++struct ubifs_bud *ubifs_search_bud(struct ubifs_info *c, int lnum)
++{
++ struct rb_node *p;
++ struct ubifs_bud *bud;
++
++ spin_lock(&c->buds_lock);
++ p = c->buds.rb_node;
++ while (p) {
++ bud = rb_entry(p, struct ubifs_bud, rb);
++ if (lnum < bud->lnum)
++ p = p->rb_left;
++ else if (lnum > bud->lnum)
++ p = p->rb_right;
++ else {
++ spin_unlock(&c->buds_lock);
++ return bud;
++ }
++ }
++ spin_unlock(&c->buds_lock);
++ return NULL;
++}
++
++/**
++ * ubifs_get_wbuf - get the wbuf associated with a LEB, if there is one.
++ * @c: UBIFS file-system description object
++ * @lnum: logical eraseblock number to search
++ *
++ * This functions returns the wbuf for @lnum or %NULL if there is not one.
++ */
++struct ubifs_wbuf *ubifs_get_wbuf(struct ubifs_info *c, int lnum)
++{
++ struct rb_node *p;
++ struct ubifs_bud *bud;
++ int jhead;
++
++ if (!c->jheads)
++ return NULL;
++
++ spin_lock(&c->buds_lock);
++ p = c->buds.rb_node;
++ while (p) {
++ bud = rb_entry(p, struct ubifs_bud, rb);
++ if (lnum < bud->lnum)
++ p = p->rb_left;
++ else if (lnum > bud->lnum)
++ p = p->rb_right;
++ else {
++ jhead = bud->jhead;
++ spin_unlock(&c->buds_lock);
++ return &c->jheads[jhead].wbuf;
++ }
++ }
++ spin_unlock(&c->buds_lock);
++ return NULL;
++}
++
++/**
++ * next_log_lnum - switch to the next log LEB.
++ * @c: UBIFS file-system description object
++ * @lnum: current log LEB
++ */
++static inline int next_log_lnum(const struct ubifs_info *c, int lnum)
++{
++ lnum += 1;
++ if (lnum > c->log_last)
++ lnum = UBIFS_LOG_LNUM;
++
++ return lnum;
++}
++
++/**
++ * empty_log_bytes - calculate amount of empty space in the log.
++ * @c: UBIFS file-system description object
++ */
++static inline long long empty_log_bytes(const struct ubifs_info *c)
++{
++ long long h, t;
++
++ h = c->lhead_lnum * c->leb_size + c->lhead_offs;
++ t = c->ltail_lnum * c->leb_size;
++
++ if (h >= t)
++ return c->log_bytes - h + t;
++ else
++ return t - h;
++}
++
++/**
++ * ubifs_add_bud - add bud LEB to the tree of buds and its journal head list.
++ * @c: UBIFS file-system description object
++ * @bud: the bud to add
++ */
++void ubifs_add_bud(struct ubifs_info *c, struct ubifs_bud *bud)
++{
++ struct rb_node **p, *parent = NULL;
++ struct ubifs_bud *b;
++ struct ubifs_jhead *jhead;
++
++ spin_lock(&c->buds_lock);
++ p = &c->buds.rb_node;
++ while (*p) {
++ parent = *p;
++ b = rb_entry(parent, struct ubifs_bud, rb);
++ ubifs_assert(bud->lnum != b->lnum);
++ if (bud->lnum < b->lnum)
++ p = &(*p)->rb_left;
++ else
++ p = &(*p)->rb_right;
++ }
++
++ rb_link_node(&bud->rb, parent, p);
++ rb_insert_color(&bud->rb, &c->buds);
++ if (c->jheads) {
++ jhead = &c->jheads[bud->jhead];
++ list_add_tail(&bud->list, &jhead->buds_list);
++ } else
++ ubifs_assert(c->replaying && (c->vfs_sb->s_flags & MS_RDONLY));
++
++ /*
++ * Note, although this is a new bud, we anyway account this space now,
++ * before any data has been written to it, because this is about to
++ * guarantee fixed mount time, and this bud will anyway be read and
++ * scanned.
++ */
++ c->bud_bytes += c->leb_size - bud->start;
++
++ dbg_log("LEB %d:%d, jhead %d, bud_bytes %lld", bud->lnum,
++ bud->start, bud->jhead, c->bud_bytes);
++ spin_unlock(&c->buds_lock);
++}
++
++/**
++ * ubifs_create_buds_lists - create journal head buds lists for remount rw.
++ * @c: UBIFS file-system description object
++ */
++void ubifs_create_buds_lists(struct ubifs_info *c)
++{
++ struct rb_node *p;
++
++ spin_lock(&c->buds_lock);
++ p = rb_first(&c->buds);
++ while (p) {
++ struct ubifs_bud *bud = rb_entry(p, struct ubifs_bud, rb);
++ struct ubifs_jhead *jhead = &c->jheads[bud->jhead];
++
++ list_add_tail(&bud->list, &jhead->buds_list);
++ p = rb_next(p);
++ }
++ spin_unlock(&c->buds_lock);
++}
++
++/**
++ * ubifs_add_bud_to_log - add a new bud to the log.
++ * @c: UBIFS file-system description object
++ * @jhead: journal head the bud belongs to
++ * @lnum: LEB number of the bud
++ * @offs: starting offset of the bud
++ *
++ * This function writes reference node for the new bud LEB @lnum it to the log,
++ * and adds it to the buds tress. It also makes sure that log size does not
++ * exceed the 'c->max_bud_bytes' limit. Returns zero in case of success,
++ * %-EAGAIN if commit is required, and a negative error codes in case of
++ * failure.
++ */
++int ubifs_add_bud_to_log(struct ubifs_info *c, int jhead, int lnum, int offs)
++{
++ int err;
++ struct ubifs_bud *bud;
++ struct ubifs_ref_node *ref;
++
++ bud = kmalloc(sizeof(struct ubifs_bud), GFP_NOFS);
++ if (!bud)
++ return -ENOMEM;
++ ref = kzalloc(c->ref_node_alsz, GFP_NOFS);
++ if (!ref) {
++ kfree(bud);
++ return -ENOMEM;
++ }
++
++ mutex_lock(&c->log_mutex);
++ /* Make sure we have enough space in the log */
++ if (empty_log_bytes(c) - c->ref_node_alsz < c->min_log_bytes) {
++ dbg_log("not enough log space - %lld, required %d",
++ empty_log_bytes(c), c->min_log_bytes);
++ ubifs_commit_required(c);
++ err = -EAGAIN;
++ goto out_unlock;
++ }
++
++ /*
++ * Make sure the the amount of space in buds will not exceed
++ * 'c->max_bud_bytes' limit, because we want to guarantee mount time
++ * limits.
++ *
++ * It is not necessary to hold @c->buds_lock when reading @c->bud_bytes
++ * because we are holding @c->log_mutex. All @c->bud_bytes take place
++ * when both @c->log_mutex and @c->bud_bytes are locked.
++ */
++ if (c->bud_bytes + c->leb_size - offs > c->max_bud_bytes) {
++ dbg_log("bud bytes %lld (%lld max), require commit",
++ c->bud_bytes, c->max_bud_bytes);
++ ubifs_commit_required(c);
++ err = -EAGAIN;
++ goto out_unlock;
++ }
++
++ /*
++ * If the journal is full enough - start background commit. Note, it is
++ * OK to read 'c->cmt_state' without spinlock because integer reads
++ * are atomic in the kernel.
++ */
++ if (c->bud_bytes >= c->bg_bud_bytes &&
++ c->cmt_state == COMMIT_RESTING) {
++ dbg_log("bud bytes %lld (%lld max), initiate BG commit",
++ c->bud_bytes, c->max_bud_bytes);
++ ubifs_request_bg_commit(c);
++ }
++
++ bud->lnum = lnum;
++ bud->start = offs;
++ bud->jhead = jhead;
++
++ ref->ch.node_type = UBIFS_REF_NODE;
++ ref->lnum = cpu_to_le32(bud->lnum);
++ ref->offs = cpu_to_le32(bud->start);
++ ref->jhead = cpu_to_le32(jhead);
++
++ if (c->lhead_offs > c->leb_size - c->ref_node_alsz) {
++ c->lhead_lnum = next_log_lnum(c, c->lhead_lnum);
++ c->lhead_offs = 0;
++ }
++
++ if (c->lhead_offs == 0) {
++ /* Must ensure next log LEB has been unmapped */
++ err = ubifs_leb_unmap(c, c->lhead_lnum);
++ if (err)
++ goto out_unlock;
++ }
++
++ if (bud->start == 0) {
++ /*
++ * Before writing the LEB reference which refers an empty LEB
++ * to the log, we have to make sure it is mapped, because
++ * otherwise we'd risk to refer an LEB with garbage in case of
++ * an unclean reboot, because the target LEB might have been
++ * unmapped, but not yet physically erased.
++ */
++ err = ubi_leb_map(c->ubi, bud->lnum, UBI_SHORTTERM);
++ if (err)
++ goto out_unlock;
++ }
++
++ dbg_log("write ref LEB %d:%d",
++ c->lhead_lnum, c->lhead_offs);
++ err = ubifs_write_node(c, ref, UBIFS_REF_NODE_SZ, c->lhead_lnum,
++ c->lhead_offs, UBI_SHORTTERM);
++ c->lhead_offs += c->ref_node_alsz;
++ if (err)
++ goto out_unlock;
++
++ ubifs_add_bud(c, bud);
++
++ mutex_unlock(&c->log_mutex);
++ kfree(ref);
++ return 0;
++
++out_unlock:
++ mutex_unlock(&c->log_mutex);
++ kfree(ref);
++ kfree(bud);
++ return err;
++}
++
++/**
++ * remove_buds - remove used buds.
++ * @c: UBIFS file-system description object
++ *
++ * This function removes use buds from the buds tree. It does not remove the
++ * buds which are pointed to by journal heads.
++ */
++static void remove_buds(struct ubifs_info *c)
++{
++ struct rb_node *p;
++
++ ubifs_assert(list_empty(&c->old_buds));
++ c->cmt_bud_bytes = 0;
++ spin_lock(&c->buds_lock);
++ p = rb_first(&c->buds);
++ while (p) {
++ struct rb_node *p1 = p;
++ struct ubifs_bud *bud;
++ struct ubifs_wbuf *wbuf;
++
++ p = rb_next(p);
++ bud = rb_entry(p1, struct ubifs_bud, rb);
++ wbuf = &c->jheads[bud->jhead].wbuf;
++
++ if (wbuf->lnum == bud->lnum) {
++ /*
++ * Do not remove buds which are pointed to by journal
++ * heads (non-closed buds).
++ */
++ c->cmt_bud_bytes += wbuf->offs - bud->start;
++ dbg_log("preserve %d:%d, jhead %d, bud bytes %d, "
++ "cmt_bud_bytes %lld", bud->lnum, bud->start,
++ bud->jhead, wbuf->offs - bud->start,
++ c->cmt_bud_bytes);
++ bud->start = wbuf->offs;
++ } else {
++ c->cmt_bud_bytes += c->leb_size - bud->start;
++ dbg_log("remove %d:%d, jhead %d, bud bytes %d, "
++ "cmt_bud_bytes %lld", bud->lnum, bud->start,
++ bud->jhead, c->leb_size - bud->start,
++ c->cmt_bud_bytes);
++ rb_erase(p1, &c->buds);
++ list_del(&bud->list);
++ /*
++ * If the commit does not finish, the recovery will need
++ * to replay the journal, in which case the old buds
++ * must be unchanged. Do not release them until post
++ * commit i.e. do not allow them to be garbage
++ * collected.
++ */
++ list_add(&bud->list, &c->old_buds);
++ }
++ }
++ spin_unlock(&c->buds_lock);
++}
++
++/**
++ * ubifs_log_start_commit - start commit.
++ * @c: UBIFS file-system description object
++ * @ltail_lnum: return new log tail LEB number
++ *
++ * The commit operation starts with writing "commit start" node to the log and
++ * reference nodes for all journal heads which will define new journal after
++ * the commit has been finished. The commit start and reference nodes are
++ * written in one go to the nearest empty log LEB (hence, when commit is
++ * finished UBIFS may safely unmap all the previous log LEBs). This function
++ * returns zero in case of success and a negative error code in case of
++ * failure.
++ */
++int ubifs_log_start_commit(struct ubifs_info *c, int *ltail_lnum)
++{
++ void *buf;
++ struct ubifs_cs_node *cs;
++ struct ubifs_ref_node *ref;
++ int err, i, max_len, len;
++
++ err = dbg_check_bud_bytes(c);
++ if (err)
++ return err;
++
++ max_len = UBIFS_CS_NODE_SZ + c->jhead_cnt * UBIFS_REF_NODE_SZ;
++ max_len = ALIGN(max_len, c->min_io_size);
++ buf = cs = kmalloc(max_len, GFP_NOFS);
++ if (!buf)
++ return -ENOMEM;
++
++ cs->ch.node_type = UBIFS_CS_NODE;
++ cs->cmt_no = cpu_to_le64(c->cmt_no + 1);
++ ubifs_prepare_node(c, cs, UBIFS_CS_NODE_SZ, 0);
++
++ /*
++ * Note, we do not lock 'c->log_mutex' because this is the commit start
++ * phase and we are exclusively using the log. And we do not lock
++ * write-buffer because nobody can write to the file-system at this
++ * phase.
++ */
++
++ len = UBIFS_CS_NODE_SZ;
++ for (i = 0; i < c->jhead_cnt; i++) {
++ int lnum = c->jheads[i].wbuf.lnum;
++ int offs = c->jheads[i].wbuf.offs;
++
++ if (lnum == -1 || offs == c->leb_size)
++ continue;
++
++ dbg_log("add ref to LEB %d:%d for jhead %d", lnum, offs, i);
++ ref = buf + len;
++ ref->ch.node_type = UBIFS_REF_NODE;
++ ref->lnum = cpu_to_le32(lnum);
++ ref->offs = cpu_to_le32(offs);
++ ref->jhead = cpu_to_le32(i);
++
++ ubifs_prepare_node(c, ref, UBIFS_REF_NODE_SZ, 0);
++ len += UBIFS_REF_NODE_SZ;
++ }
++
++ ubifs_pad(c, buf + len, ALIGN(len, c->min_io_size) - len);
++
++ /* Switch to the next log LEB */
++ if (c->lhead_offs) {
++ c->lhead_lnum = next_log_lnum(c, c->lhead_lnum);
++ c->lhead_offs = 0;
++ }
++
++ if (c->lhead_offs == 0) {
++ /* Must ensure next LEB has been unmapped */
++ err = ubifs_leb_unmap(c, c->lhead_lnum);
++ if (err)
++ goto out;
++ }
++
++ len = ALIGN(len, c->min_io_size);
++ dbg_log("writing commit start at LEB %d:0, len %d", c->lhead_lnum, len);
++ err = ubifs_leb_write(c, c->lhead_lnum, cs, 0, len, UBI_SHORTTERM);
++ if (err)
++ goto out;
++
++ *ltail_lnum = c->lhead_lnum;
++
++ c->lhead_offs += len;
++ if (c->lhead_offs == c->leb_size) {
++ c->lhead_lnum = next_log_lnum(c, c->lhead_lnum);
++ c->lhead_offs = 0;
++ }
++
++ remove_buds(c);
++
++ /*
++ * We have started the commit and now users may use the rest of the log
++ * for new writes.
++ */
++ c->min_log_bytes = 0;
++
++out:
++ kfree(buf);
++ return err;
++}
++
++/**
++ * ubifs_log_end_commit - end commit.
++ * @c: UBIFS file-system description object
++ * @ltail_lnum: new log tail LEB number
++ *
++ * This function is called on when the commit operation was finished. It
++ * moves log tail to new position and unmaps LEBs which contain obsolete data.
++ * Returns zero in case of success and a negative error code in case of
++ * failure.
++ */
++int ubifs_log_end_commit(struct ubifs_info *c, int ltail_lnum)
++{
++ int err;
++
++ /*
++ * At this phase we have to lock 'c->log_mutex' because UBIFS allows FS
++ * writes during commit. Its only short "commit" start phase when
++ * writers are blocked.
++ */
++ mutex_lock(&c->log_mutex);
++
++ dbg_log("old tail was LEB %d:0, new tail is LEB %d:0",
++ c->ltail_lnum, ltail_lnum);
++
++ c->ltail_lnum = ltail_lnum;
++ /*
++ * The commit is finished and from now on it must be guaranteed that
++ * there is always enough space for the next commit.
++ */
++ c->min_log_bytes = c->leb_size;
++
++ spin_lock(&c->buds_lock);
++ c->bud_bytes -= c->cmt_bud_bytes;
++ spin_unlock(&c->buds_lock);
++
++ err = dbg_check_bud_bytes(c);
++
++ mutex_unlock(&c->log_mutex);
++ return err;
++}
++
++/**
++ * ubifs_log_post_commit - things to do after commit is completed.
++ * @c: UBIFS file-system description object
++ * @old_ltail_lnum: old log tail LEB number
++ *
++ * Release buds only after commit is completed, because they must be unchanged
++ * if recovery is needed.
++ *
++ * Unmap log LEBs only after commit is completed, because they may be needed for
++ * recovery.
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++int ubifs_log_post_commit(struct ubifs_info *c, int old_ltail_lnum)
++{
++ int lnum, err = 0;
++
++ while (!list_empty(&c->old_buds)) {
++ struct ubifs_bud *bud;
++
++ bud = list_entry(c->old_buds.next, struct ubifs_bud, list);
++ err = ubifs_return_leb(c, bud->lnum);
++ if (err)
++ return err;
++ list_del(&bud->list);
++ kfree(bud);
++ }
++ mutex_lock(&c->log_mutex);
++ for (lnum = old_ltail_lnum; lnum != c->ltail_lnum;
++ lnum = next_log_lnum(c, lnum)) {
++ dbg_log("unmap log LEB %d", lnum);
++ err = ubifs_leb_unmap(c, lnum);
++ if (err)
++ goto out;
++ }
++out:
++ mutex_unlock(&c->log_mutex);
++ return err;
++}
++
++/**
++ * struct done_ref - references that have been done.
++ * @rb: rb-tree node
++ * @lnum: LEB number
++ */
++struct done_ref {
++ struct rb_node rb;
++ int lnum;
++};
++
++/**
++ * done_already - determine if a reference has been done already.
++ * @done_tree: rb-tree to store references that have been done
++ * @lnum: LEB number of reference
++ *
++ * This function returns %1 if the reference has been done, %0 if not, otherwise
++ * a negative error code is returned.
++ */
++static int done_already(struct rb_root *done_tree, int lnum)
++{
++ struct rb_node **p = &done_tree->rb_node, *parent = NULL;
++ struct done_ref *dr;
++
++ while (*p) {
++ parent = *p;
++ dr = rb_entry(parent, struct done_ref, rb);
++ if (lnum < dr->lnum)
++ p = &(*p)->rb_left;
++ else if (lnum > dr->lnum)
++ p = &(*p)->rb_right;
++ else
++ return 1;
++ }
++
++ dr = kzalloc(sizeof(struct done_ref), GFP_NOFS);
++ if (!dr)
++ return -ENOMEM;
++
++ dr->lnum = lnum;
++
++ rb_link_node(&dr->rb, parent, p);
++ rb_insert_color(&dr->rb, done_tree);
++
++ return 0;
++}
++
++/**
++ * destroy_done_tree - destroy the done tree.
++ * @done_tree: done tree to destroy
++ */
++static void destroy_done_tree(struct rb_root *done_tree)
++{
++ struct rb_node *this = done_tree->rb_node;
++ struct done_ref *dr;
++
++ while (this) {
++ if (this->rb_left) {
++ this = this->rb_left;
++ continue;
++ } else if (this->rb_right) {
++ this = this->rb_right;
++ continue;
++ }
++ dr = rb_entry(this, struct done_ref, rb);
++ this = rb_parent(this);
++ if (this) {
++ if (this->rb_left == &dr->rb)
++ this->rb_left = NULL;
++ else
++ this->rb_right = NULL;
++ }
++ kfree(dr);
++ }
++}
++
++/**
++ * add_node - add a node to the consolidated log.
++ * @c: UBIFS file-system description object
++ * @buf: buffer to which to add
++ * @lnum: LEB number to which to write is passed and returned here
++ * @offs: offset to where to write is passed and returned here
++ * @node: node to add
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++static int add_node(struct ubifs_info *c, void *buf, int *lnum, int *offs,
++ void *node)
++{
++ struct ubifs_ch *ch = node;
++ int len = le32_to_cpu(ch->len), remains = c->leb_size - *offs;
++
++ if (len > remains) {
++ int sz = ALIGN(*offs, c->min_io_size), err;
++
++ ubifs_pad(c, buf + *offs, sz - *offs);
++ err = ubi_leb_change(c->ubi, *lnum, buf, sz, UBI_SHORTTERM);
++ if (err)
++ return err;
++ *lnum = next_log_lnum(c, *lnum);
++ *offs = 0;
++ }
++ memcpy(buf + *offs, node, len);
++ *offs += ALIGN(len, 8);
++ return 0;
++}
++
++/**
++ * ubifs_consolidate_log - consolidate the log.
++ * @c: UBIFS file-system description object
++ *
++ * Repeated failed commits could cause the log to be full, but at least 1 LEB is
++ * needed for commit. This function rewrites the reference nodes in the log
++ * omitting duplicates, and failed CS nodes, and leaving no gaps.
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++int ubifs_consolidate_log(struct ubifs_info *c)
++{
++ struct ubifs_scan_leb *sleb;
++ struct ubifs_scan_node *snod;
++ struct rb_root done_tree = RB_ROOT;
++ int lnum, err, first = 1, write_lnum, offs = 0;
++ void *buf;
++
++ dbg_rcvry("log tail LEB %d, log head LEB %d", c->ltail_lnum,
++ c->lhead_lnum);
++ buf = vmalloc(c->leb_size);
++ if (!buf)
++ return -ENOMEM;
++ lnum = c->ltail_lnum;
++ write_lnum = lnum;
++ while (1) {
++ sleb = ubifs_scan(c, lnum, 0, c->sbuf);
++ if (IS_ERR(sleb)) {
++ err = PTR_ERR(sleb);
++ goto out_free;
++ }
++ list_for_each_entry(snod, &sleb->nodes, list) {
++ switch (snod->type) {
++ case UBIFS_REF_NODE: {
++ struct ubifs_ref_node *ref = snod->node;
++ int ref_lnum = le32_to_cpu(ref->lnum);
++
++ err = done_already(&done_tree, ref_lnum);
++ if (err < 0)
++ goto out_scan;
++ if (err != 1) {
++ err = add_node(c, buf, &write_lnum,
++ &offs, snod->node);
++ if (err)
++ goto out_scan;
++ }
++ break;
++ }
++ case UBIFS_CS_NODE:
++ if (!first)
++ break;
++ err = add_node(c, buf, &write_lnum, &offs,
++ snod->node);
++ if (err)
++ goto out_scan;
++ first = 0;
++ break;
++ }
++ }
++ ubifs_scan_destroy(sleb);
++ if (lnum == c->lhead_lnum)
++ break;
++ lnum = next_log_lnum(c, lnum);
++ }
++ if (offs) {
++ int sz = ALIGN(offs, c->min_io_size);
++
++ ubifs_pad(c, buf + offs, sz - offs);
++ err = ubi_leb_change(c->ubi, write_lnum, buf, sz,
++ UBI_SHORTTERM);
++ if (err)
++ goto out_free;
++ offs = ALIGN(offs, c->min_io_size);
++ }
++ destroy_done_tree(&done_tree);
++ vfree(buf);
++ if (write_lnum == c->lhead_lnum) {
++ ubifs_err("log is too full");
++ return -EINVAL;
++ }
++ /* Unmap remaining LEBs */
++ lnum = write_lnum;
++ do {
++ lnum = next_log_lnum(c, lnum);
++ err = ubifs_leb_unmap(c, lnum);
++ if (err)
++ return err;
++ } while (lnum != c->lhead_lnum);
++ c->lhead_lnum = write_lnum;
++ c->lhead_offs = offs;
++ dbg_rcvry("new log head at %d:%d", c->lhead_lnum, c->lhead_offs);
++ return 0;
++
++out_scan:
++ ubifs_scan_destroy(sleb);
++out_free:
++ destroy_done_tree(&done_tree);
++ vfree(buf);
++ return err;
++}
++
++#ifdef CONFIG_UBIFS_FS_DEBUG
++
++/**
++ * dbg_check_bud_bytes - make sure bud bytes calculation are all right.
++ * @c: UBIFS file-system description object
++ *
++ * This function makes sure the amount of flash space used by closed buds
++ * ('c->bud_bytes' is correct). Returns zero in case of success and %-EINVAL in
++ * case of failure.
++ */
++static int dbg_check_bud_bytes(struct ubifs_info *c)
++{
++ int i, err = 0;
++ struct ubifs_bud *bud;
++ long long bud_bytes = 0;
++
++ if (!(ubifs_chk_flags & UBIFS_CHK_GEN))
++ return 0;
++
++ spin_lock(&c->buds_lock);
++ for (i = 0; i < c->jhead_cnt; i++)
++ list_for_each_entry(bud, &c->jheads[i].buds_list, list)
++ bud_bytes += c->leb_size - bud->start;
++
++ if (c->bud_bytes != bud_bytes) {
++ ubifs_err("bad bud_bytes %lld, calculated %lld",
++ c->bud_bytes, bud_bytes);
++ err = -EINVAL;
++ }
++ spin_unlock(&c->buds_lock);
++
++ return err;
++}
++
++#endif /* CONFIG_UBIFS_FS_DEBUG */
+diff --exclude=.git -urN linux-2.6.25.6/fs/ubifs/lprops.c avr32-2.6/fs/ubifs/lprops.c
+--- linux-2.6.25.6/fs/ubifs/lprops.c 1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/fs/ubifs/lprops.c 2008-06-12 15:09:45.371816276 +0200
+@@ -0,0 +1,1355 @@
++/*
++ * This file is part of UBIFS.
++ *
++ * Copyright (C) 2006-2008 Nokia Corporation.
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published by
++ * the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but WITHOUT
++ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
++ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
++ * more details.
++ *
++ * You should have received a copy of the GNU General Public License along with
++ * this program; if not, write to the Free Software Foundation, Inc., 51
++ * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
++ *
++ * Authors: Adrian Hunter
++ * Artem Bityutskiy (Битюцкий Артём)
++ */
++
++/*
++ * This file implements the functions that access LEB properties and their
++ * categories. LEBs are categorized based on the needs of UBIFS, and the
++ * categories are stored as either heaps or lists to provide a fast way of
++ * finding a LEB in a particular category. For example, UBIFS may need to find
++ * an empty LEB for the journal, or a very dirty LEB for garbage collection.
++ */
++
++#include "ubifs.h"
++
++/**
++ * get_heap_comp_val - get the LEB properties value for heap comparisons.
++ * @lprops: LEB properties
++ * @cat: LEB category
++ */
++static int get_heap_comp_val(struct ubifs_lprops *lprops, int cat)
++{
++ switch (cat) {
++ case LPROPS_FREE:
++ return lprops->free;
++ case LPROPS_DIRTY_IDX:
++ return lprops->free + lprops->dirty;
++ default:
++ return lprops->dirty;
++ }
++}
++
++/**
++ * move_up_lpt_heap - move a new heap entry up as far as possible.
++ * @c: UBIFS file-system description object
++ * @heap: LEB category heap
++ * @lprops: LEB properties to move
++ * @cat: LEB category
++ *
++ * New entries to a heap are added at the bottom and then moved up until the
++ * parent's value is greater. In the case of LPT's category heaps, the value
++ * is either the amount of free space or the amount of dirty space, depending
++ * on the category.
++ */
++static void move_up_lpt_heap(struct ubifs_info *c, struct ubifs_lpt_heap *heap,
++ struct ubifs_lprops *lprops, int cat)
++{
++ int val1, val2, hpos;
++
++ hpos = lprops->hpos;
++ if (!hpos)
++ return; /* Already top of the heap */
++ val1 = get_heap_comp_val(lprops, cat);
++ /* Compare to parent and, if greater, move up the heap */
++ do {
++ int ppos = (hpos - 1) / 2;
++
++ val2 = get_heap_comp_val(heap->arr[ppos], cat);
++ if (val2 >= val1)
++ return;
++ /* Greater than parent so move up */
++ heap->arr[ppos]->hpos = hpos;
++ heap->arr[hpos] = heap->arr[ppos];
++ heap->arr[ppos] = lprops;
++ lprops->hpos = ppos;
++ hpos = ppos;
++ } while (hpos);
++}
++
++/**
++ * adjust_lpt_heap - move a changed heap entry up or down the heap.
++ * @c: UBIFS file-system description object
++ * @heap: LEB category heap
++ * @lprops: LEB properties to move
++ * @hpos: heap position of @lprops
++ * @cat: LEB category
++ *
++ * Changed entries in a heap are moved up or down until the parent's value is
++ * greater. In the case of LPT's category heaps, the value is either the amount
++ * of free space or the amount of dirty space, depending on the category.
++ */
++static void adjust_lpt_heap(struct ubifs_info *c, struct ubifs_lpt_heap *heap,
++ struct ubifs_lprops *lprops, int hpos, int cat)
++{
++ int val1, val2, val3, cpos;
++
++ val1 = get_heap_comp_val(lprops, cat);
++ /* Compare to parent and, if greater than parent, move up the heap */
++ if (hpos) {
++ int ppos = (hpos - 1) / 2;
++
++ val2 = get_heap_comp_val(heap->arr[ppos], cat);
++ if (val1 > val2) {
++ /* Greater than parent so move up */
++ while (1) {
++ heap->arr[ppos]->hpos = hpos;
++ heap->arr[hpos] = heap->arr[ppos];
++ heap->arr[ppos] = lprops;
++ lprops->hpos = ppos;
++ hpos = ppos;
++ if (!hpos)
++ return;
++ ppos = (hpos - 1) / 2;
++ val2 = get_heap_comp_val(heap->arr[ppos], cat);
++ if (val1 <= val2)
++ return;
++ /* Still greater than parent so keep going */
++ }
++ }
++ }
++ /* Not greater than parent, so compare to children */
++ while (1) {
++ /* Compare to left child */
++ cpos = hpos * 2 + 1;
++ if (cpos >= heap->cnt)
++ return;
++ val2 = get_heap_comp_val(heap->arr[cpos], cat);
++ if (val1 < val2) {
++ /* Less than left child, so promote biggest child */
++ if (cpos + 1 < heap->cnt) {
++ val3 = get_heap_comp_val(heap->arr[cpos + 1],
++ cat);
++ if (val3 > val2)
++ cpos += 1; /* Right child is bigger */
++ }
++ heap->arr[cpos]->hpos = hpos;
++ heap->arr[hpos] = heap->arr[cpos];
++ heap->arr[cpos] = lprops;
++ lprops->hpos = cpos;
++ hpos = cpos;
++ continue;
++ }
++ /* Compare to right child */
++ cpos += 1;
++ if (cpos >= heap->cnt)
++ return;
++ val3 = get_heap_comp_val(heap->arr[cpos], cat);
++ if (val1 < val3) {
++ /* Less than right child, so promote right child */
++ heap->arr[cpos]->hpos = hpos;
++ heap->arr[hpos] = heap->arr[cpos];
++ heap->arr[cpos] = lprops;
++ lprops->hpos = cpos;
++ hpos = cpos;
++ continue;
++ }
++ return;
++ }
++}
++
++/**
++ * add_to_lpt_heap - add LEB properties to a LEB category heap.
++ * @c: UBIFS file-system description object
++ * @lprops: LEB properties to add
++ * @cat: LEB category
++ *
++ * This function returns %1 if @lprops is added to the heap for LEB category
++ * @cat, otherwise %0 is returned because the heap is full.
++ */
++static int add_to_lpt_heap(struct ubifs_info *c, struct ubifs_lprops *lprops,
++ int cat)
++{
++ struct ubifs_lpt_heap *heap = &c->lpt_heap[cat - 1];
++
++ if (heap->cnt >= heap->max_cnt) {
++ const int b = LPT_HEAP_SZ / 2 - 1;
++ int cpos, val1, val2;
++
++ /* Compare to some other LEB on the bottom of heap */
++ /* Pick a position kind of randomly */
++ cpos = (((size_t)lprops >> 4) & b) + b;
++ ubifs_assert(cpos >= b);
++ ubifs_assert(cpos < LPT_HEAP_SZ);
++ ubifs_assert(cpos < heap->cnt);
++
++ val1 = get_heap_comp_val(lprops, cat);
++ val2 = get_heap_comp_val(heap->arr[cpos], cat);
++ if (val1 > val2) {
++ struct ubifs_lprops *lp;
++
++ lp = heap->arr[cpos];
++ lp->flags &= ~LPROPS_CAT_MASK;
++ lp->flags |= LPROPS_UNCAT;
++ list_add(&lp->list, &c->uncat_list);
++ lprops->hpos = cpos;
++ heap->arr[cpos] = lprops;
++ move_up_lpt_heap(c, heap, lprops, cat);
++ dbg_check_heap(c, heap, cat, lprops->hpos);
++ return 1; /* Added to heap */
++ }
++ dbg_check_heap(c, heap, cat, -1);
++ return 0; /* Not added to heap */
++ } else {
++ lprops->hpos = heap->cnt++;
++ heap->arr[lprops->hpos] = lprops;
++ move_up_lpt_heap(c, heap, lprops, cat);
++ dbg_check_heap(c, heap, cat, lprops->hpos);
++ return 1; /* Added to heap */
++ }
++}
++
++/**
++ * remove_from_lpt_heap - remove LEB properties from a LEB category heap.
++ * @c: UBIFS file-system description object
++ * @lprops: LEB properties to remove
++ * @cat: LEB category
++ */
++static void remove_from_lpt_heap(struct ubifs_info *c,
++ struct ubifs_lprops *lprops, int cat)
++{
++ struct ubifs_lpt_heap *heap;
++ int hpos = lprops->hpos;
++
++ heap = &c->lpt_heap[cat - 1];
++ ubifs_assert(hpos >= 0 && hpos < heap->cnt);
++ ubifs_assert(heap->arr[hpos] == lprops);
++ heap->cnt -= 1;
++ if (hpos < heap->cnt) {
++ heap->arr[hpos] = heap->arr[heap->cnt];
++ heap->arr[hpos]->hpos = hpos;
++ adjust_lpt_heap(c, heap, heap->arr[hpos], hpos, cat);
++ }
++ dbg_check_heap(c, heap, cat, -1);
++}
++
++/**
++ * lpt_heap_replace - replace lprops in a category heap.
++ * @c: UBIFS file-system description object
++ * @old_lprops: LEB properties to replace
++ * @new_lprops: LEB properties with which to replace
++ * @cat: LEB category
++ *
++ * During commit it is sometimes necessary to copy a pnode (see dirty_cow_pnode)
++ * and the lprops that the pnode contains. When that happens, references in
++ * the category heaps to those lprops must be updated to point to the new
++ * lprops. This function does that.
++ */
++static void lpt_heap_replace(struct ubifs_info *c,
++ struct ubifs_lprops *old_lprops,
++ struct ubifs_lprops *new_lprops, int cat)
++{
++ struct ubifs_lpt_heap *heap;
++ int hpos = new_lprops->hpos;
++
++ heap = &c->lpt_heap[cat - 1];
++ heap->arr[hpos] = new_lprops;
++}
++
++/**
++ * ubifs_add_to_cat - add LEB properties to a category list or heap.
++ * @c: UBIFS file-system description object
++ * @lprops: LEB properties to add
++ * @cat: LEB category to which to add
++ *
++ * LEB properties are categorized to enable fast find operations.
++ */
++void ubifs_add_to_cat(struct ubifs_info *c, struct ubifs_lprops *lprops,
++ int cat)
++{
++ switch (cat) {
++ case LPROPS_DIRTY:
++ case LPROPS_DIRTY_IDX:
++ case LPROPS_FREE:
++ if (add_to_lpt_heap(c, lprops, cat))
++ break;
++ /* No more room on heap so make it uncategorized */
++ cat = LPROPS_UNCAT;
++ /* Fall through */
++ case LPROPS_UNCAT:
++ list_add(&lprops->list, &c->uncat_list);
++ break;
++ case LPROPS_EMPTY:
++ list_add(&lprops->list, &c->empty_list);
++ break;
++ case LPROPS_FREEABLE:
++ list_add(&lprops->list, &c->freeable_list);
++ c->freeable_cnt += 1;
++ break;
++ case LPROPS_FRDI_IDX:
++ list_add(&lprops->list, &c->frdi_idx_list);
++ break;
++ default:
++ ubifs_assert(0);
++ }
++ lprops->flags &= ~LPROPS_CAT_MASK;
++ lprops->flags |= cat;
++}
++
++/**
++ * ubifs_remove_from_cat - remove LEB properties from a category list or heap.
++ * @c: UBIFS file-system description object
++ * @lprops: LEB properties to remove
++ * @cat: LEB category from which to remove
++ *
++ * LEB properties are categorized to enable fast find operations.
++ */
++static void ubifs_remove_from_cat(struct ubifs_info *c,
++ struct ubifs_lprops *lprops, int cat)
++{
++ switch (cat) {
++ case LPROPS_DIRTY:
++ case LPROPS_DIRTY_IDX:
++ case LPROPS_FREE:
++ remove_from_lpt_heap(c, lprops, cat);
++ break;
++ case LPROPS_FREEABLE:
++ c->freeable_cnt -= 1;
++ ubifs_assert(c->freeable_cnt >= 0);
++ /* Fall through */
++ case LPROPS_UNCAT:
++ case LPROPS_EMPTY:
++ case LPROPS_FRDI_IDX:
++ ubifs_assert(!list_empty(&lprops->list));
++ list_del(&lprops->list);
++ break;
++ default:
++ ubifs_assert(0);
++ }
++}
++
++/**
++ * ubifs_replace_cat - replace lprops in a category list or heap.
++ * @c: UBIFS file-system description object
++ * @old_lprops: LEB properties to replace
++ * @new_lprops: LEB properties with which to replace
++ *
++ * During commit it is sometimes necessary to copy a pnode (see dirty_cow_pnode)
++ * and the lprops that the pnode contains. When that happens, references in
++ * category lists and heaps must be replaced. This function does that.
++ */
++void ubifs_replace_cat(struct ubifs_info *c, struct ubifs_lprops *old_lprops,
++ struct ubifs_lprops *new_lprops)
++{
++ int cat;
++
++ cat = new_lprops->flags & LPROPS_CAT_MASK;
++ switch (cat) {
++ case LPROPS_DIRTY:
++ case LPROPS_DIRTY_IDX:
++ case LPROPS_FREE:
++ lpt_heap_replace(c, old_lprops, new_lprops, cat);
++ break;
++ case LPROPS_UNCAT:
++ case LPROPS_EMPTY:
++ case LPROPS_FREEABLE:
++ case LPROPS_FRDI_IDX:
++ list_replace(&old_lprops->list, &new_lprops->list);
++ break;
++ default:
++ ubifs_assert(0);
++ }
++}
++
++/**
++ * ubifs_ensure_cat - ensure LEB properties are categorized.
++ * @c: UBIFS file-system description object
++ * @lprops: LEB properties
++ *
++ * A LEB may have fallen off of the bottom of a heap, and ended up as
++ * uncategorized even though it has enough space for us now. If that is the case
++ * this function will put the LEB back onto a heap.
++ */
++void ubifs_ensure_cat(struct ubifs_info *c, struct ubifs_lprops *lprops)
++{
++ int cat = lprops->flags & LPROPS_CAT_MASK;
++
++ if (cat != LPROPS_UNCAT)
++ return;
++ cat = ubifs_categorize_lprops(c, lprops);
++ if (cat == LPROPS_UNCAT)
++ return;
++ ubifs_remove_from_cat(c, lprops, LPROPS_UNCAT);
++ ubifs_add_to_cat(c, lprops, cat);
++}
++
++/**
++ * ubifs_categorize_lprops - categorize LEB properties.
++ * @c: UBIFS file-system description object
++ * @lprops: LEB properties to categorize
++ *
++ * LEB properties are categorized to enable fast find operations. This function
++ * returns the LEB category to which the LEB properties belong. Note however
++ * that if the LEB category is stored as a heap and the heap is full, the
++ * LEB properties may have their category changed to %LPROPS_UNCAT.
++ */
++int ubifs_categorize_lprops(const struct ubifs_info *c,
++ const struct ubifs_lprops *lprops)
++{
++ if (lprops->flags & LPROPS_TAKEN)
++ return LPROPS_UNCAT;
++
++ if (lprops->free == c->leb_size) {
++ ubifs_assert(!(lprops->flags & LPROPS_INDEX));
++ return LPROPS_EMPTY;
++ }
++
++ if (lprops->free + lprops->dirty == c->leb_size) {
++ if (lprops->flags & LPROPS_INDEX)
++ return LPROPS_FRDI_IDX;
++ else
++ return LPROPS_FREEABLE;
++ }
++
++ if (lprops->flags & LPROPS_INDEX) {
++ if (lprops->dirty + lprops->free >= c->min_idx_node_sz)
++ return LPROPS_DIRTY_IDX;
++ } else {
++ if (lprops->dirty >= c->dead_wm &&
++ lprops->dirty > lprops->free)
++ return LPROPS_DIRTY;
++ if (lprops->free > 0)
++ return LPROPS_FREE;
++ }
++
++ return LPROPS_UNCAT;
++}
++
++/**
++ * change_category - change LEB properties category.
++ * @c: UBIFS file-system description object
++ * @lprops: LEB properties to recategorize
++ *
++ * LEB properties are categorized to enable fast find operations. When the LEB
++ * properties change they must be recategorized.
++ */
++static void change_category(struct ubifs_info *c, struct ubifs_lprops *lprops)
++{
++ int old_cat = lprops->flags & LPROPS_CAT_MASK;
++ int new_cat = ubifs_categorize_lprops(c, lprops);
++
++ if (old_cat == new_cat) {
++ struct ubifs_lpt_heap *heap = &c->lpt_heap[new_cat - 1];
++
++ /* lprops on a heap now must be moved up or down */
++ if (new_cat < 1 || new_cat > LPROPS_HEAP_CNT)
++ return; /* Not on a heap */
++ heap = &c->lpt_heap[new_cat - 1];
++ adjust_lpt_heap(c, heap, lprops, lprops->hpos, new_cat);
++ } else {
++ ubifs_remove_from_cat(c, lprops, old_cat);
++ ubifs_add_to_cat(c, lprops, new_cat);
++ }
++}
++
++/**
++ * ubifs_get_lprops - get reference to LEB properties.
++ * @c: the UBIFS file-system description object
++ *
++ * This function locks lprops. Lprops have to be unlocked by
++ * 'ubifs_release_lprops()'.
++ */
++void ubifs_get_lprops(struct ubifs_info *c)
++{
++ mutex_lock(&c->lp_mutex);
++}
++
++/**
++ * calc_dark - calculate LEB dark space size.
++ * @c: the UBIFS file-system description object
++ * @spc: amount of free and dirty space in the LEB
++ *
++ * This function calculates amount of dark space in an LEB which has @spc bytes
++ * of free and dirty space. Returns the calculations result.
++ *
++ * Dark space is the space which is not always usable - it depends on which
++ * nodes are written in which order. E.g., if an LEB has only 512 free bytes,
++ * it is dark space, because it cannot fit a large data node. So UBIFS cannot
++ * count on this LEB and treat these 512 bytes as usable because it is not true
++ * if, for example, only big chunks of uncompressible data will be written to
++ * the FS.
++ */
++static int calc_dark(struct ubifs_info *c, int spc)
++{
++ ubifs_assert(!(spc & 7));
++
++ if (spc < c->dark_wm)
++ return spc;
++
++ /*
++ * If we have slightly more space then the dark space watermark, we can
++ * anyway safely assume it we'll be able to write a node of the
++ * smallest size there.
++ */
++ if (spc - c->dark_wm < MIN_WRITE_SZ)
++ return spc - MIN_WRITE_SZ;
++
++ return c->dark_wm;
++}
++
++/**
++ * is_lprops_dirty - determine if LEB properties are dirty.
++ * @c: the UBIFS file-system description object
++ * @lprops: LEB properties to test
++ */
++static int is_lprops_dirty(struct ubifs_info *c, struct ubifs_lprops *lprops)
++{
++ struct ubifs_pnode *pnode;
++ int pos;
++
++ pos = (lprops->lnum - c->main_first) & (UBIFS_LPT_FANOUT - 1);
++ pnode = (struct ubifs_pnode *)container_of(lprops - pos,
++ struct ubifs_pnode,
++ lprops[0]);
++ return !test_bit(COW_ZNODE, &pnode->flags) &&
++ test_bit(DIRTY_CNODE, &pnode->flags);
++}
++
++/**
++ * ubifs_change_lp - change LEB properties.
++ * @c: the UBIFS file-system description object
++ * @lp: LEB properties to change
++ * @free: new free space amount
++ * @dirty: new dirty space amount
++ * @flags: new flags
++ * @idx_gc_cnt: change to the count of idx_gc list
++ *
++ * This function changes LEB properties. This function does not change a LEB
++ * property (@free, @dirty or @flag) if the value passed is %LPROPS_NC.
++ *
++ * This function returns a pointer to the updated LEB properties on success
++ * and a negative error code on failure. N.B. the LEB properties may have had to
++ * be copied (due to COW) and consequently the pointer returned may not be the
++ * same as the pointer passed.
++ */
++const struct ubifs_lprops *ubifs_change_lp(struct ubifs_info *c,
++ const struct ubifs_lprops *lp,
++ int free, int dirty, int flags,
++ int idx_gc_cnt)
++{
++ /*
++ * This is the only function that is allowed to change lprops, so we
++ * discard the const qualifier.
++ */
++ struct ubifs_lprops *lprops = (struct ubifs_lprops *)lp;
++
++ dbg_lp("LEB %d, free %d, dirty %d, flags %d",
++ lprops->lnum, free, dirty, flags);
++
++ ubifs_assert(mutex_is_locked(&c->lp_mutex));
++ ubifs_assert(c->lst.empty_lebs >= 0 &&
++ c->lst.empty_lebs <= c->main_lebs);
++ ubifs_assert(c->freeable_cnt >= 0);
++ ubifs_assert(c->freeable_cnt <= c->main_lebs);
++ ubifs_assert(c->lst.taken_empty_lebs >= 0);
++ ubifs_assert(c->lst.taken_empty_lebs <= c->lst.empty_lebs);
++ ubifs_assert(!(c->lst.total_free & 7) && !(c->lst.total_dirty & 7));
++ ubifs_assert(!(c->lst.total_dead & 7) && !(c->lst.total_dark & 7));
++ ubifs_assert(!(c->lst.total_used & 7));
++ ubifs_assert(free == LPROPS_NC || free >= 0);
++ ubifs_assert(dirty == LPROPS_NC || dirty >= 0);
++
++ if (!is_lprops_dirty(c, lprops)) {
++ lprops = ubifs_lpt_lookup_dirty(c, lprops->lnum);
++ if (IS_ERR(lprops))
++ return lprops;
++ } else
++ ubifs_assert(lprops == ubifs_lpt_lookup_dirty(c, lprops->lnum));
++
++ ubifs_assert(!(lprops->free & 7) && !(lprops->dirty & 7));
++
++ spin_lock(&c->space_lock);
++
++ if ((lprops->flags & LPROPS_TAKEN) && lprops->free == c->leb_size)
++ c->lst.taken_empty_lebs -= 1;
++
++ if (!(lprops->flags & LPROPS_INDEX)) {
++ int old_spc;
++
++ old_spc = lprops->free + lprops->dirty;
++ if (old_spc < c->dead_wm)
++ c->lst.total_dead -= old_spc;
++ else
++ c->lst.total_dark -= calc_dark(c, old_spc);
++
++ c->lst.total_used -= c->leb_size - old_spc;
++ }
++
++ if (free != LPROPS_NC) {
++ free = ALIGN(free, 8);
++ c->lst.total_free += free - lprops->free;
++
++ /* Increase or decrease empty LEBs counter if needed */
++ if (free == c->leb_size) {
++ if (lprops->free != c->leb_size)
++ c->lst.empty_lebs += 1;
++ } else if (lprops->free == c->leb_size)
++ c->lst.empty_lebs -= 1;
++ lprops->free = free;
++ }
++
++ if (dirty != LPROPS_NC) {
++ dirty = ALIGN(dirty, 8);
++ c->lst.total_dirty += dirty - lprops->dirty;
++ lprops->dirty = dirty;
++ }
++
++ if (flags != LPROPS_NC) {
++ /* Take care about indexing LEBs counter if needed */
++ if ((lprops->flags & LPROPS_INDEX)) {
++ if (!(flags & LPROPS_INDEX))
++ c->lst.idx_lebs -= 1;
++ } else if (flags & LPROPS_INDEX)
++ c->lst.idx_lebs += 1;
++ lprops->flags = flags;
++ }
++
++ if (!(lprops->flags & LPROPS_INDEX)) {
++ int new_spc;
++
++ new_spc = lprops->free + lprops->dirty;
++ if (new_spc < c->dead_wm)
++ c->lst.total_dead += new_spc;
++ else
++ c->lst.total_dark += calc_dark(c, new_spc);
++
++ c->lst.total_used += c->leb_size - new_spc;
++ }
++
++ if ((lprops->flags & LPROPS_TAKEN) && lprops->free == c->leb_size)
++ c->lst.taken_empty_lebs += 1;
++
++ change_category(c, lprops);
++
++ c->idx_gc_cnt += idx_gc_cnt;
++
++ spin_unlock(&c->space_lock);
++
++ return lprops;
++}
++
++/**
++ * ubifs_release_lprops - release lprops lock.
++ * @c: the UBIFS file-system description object
++ *
++ * This function has to be called after each 'ubifs_get_lprops()' call to
++ * unlock lprops.
++ */
++void ubifs_release_lprops(struct ubifs_info *c)
++{
++ ubifs_assert(mutex_is_locked(&c->lp_mutex));
++ ubifs_assert(c->lst.empty_lebs >= 0 &&
++ c->lst.empty_lebs <= c->main_lebs);
++
++ mutex_unlock(&c->lp_mutex);
++}
++
++/**
++ * ubifs_get_lp_stats - get lprops statistics.
++ * @c: UBIFS file-system description object
++ * @st: return statistics
++ */
++void ubifs_get_lp_stats(struct ubifs_info *c, struct ubifs_lp_stats *st)
++{
++ spin_lock(&c->space_lock);
++ memcpy(st, &c->lst, sizeof(struct ubifs_lp_stats));
++ spin_unlock(&c->space_lock);
++}
++
++/**
++ * ubifs_change_one_lp - change LEB properties.
++ * @c: the UBIFS file-system description object
++ * @lnum: LEB to change properties for
++ * @free: amount of free space
++ * @dirty: amount of dirty space
++ * @flags_set: flags to set
++ * @flags_clean: flags to clean
++ * @idx_gc_cnt: change to the count of idx_gc list
++ *
++ * This function changes properties of LEB @lnum. It is a helper wrapper over
++ * 'ubifs_change_lp()' which hides lprops get/release. The arguments are the
++ * same as in case of 'ubifs_change_lp()'. Returns zero in case of success and
++ * a negative error code in case of failure.
++ */
++int ubifs_change_one_lp(struct ubifs_info *c, int lnum, int free, int dirty,
++ int flags_set, int flags_clean, int idx_gc_cnt)
++{
++ int err = 0, flags;
++ const struct ubifs_lprops *lp;
++
++ ubifs_get_lprops(c);
++
++ lp = ubifs_lpt_lookup_dirty(c, lnum);
++ if (IS_ERR(lp)) {
++ err = PTR_ERR(lp);
++ goto out;
++ }
++
++ flags = (lp->flags | flags_set) & ~flags_clean;
++ lp = ubifs_change_lp(c, lp, free, dirty, flags, idx_gc_cnt);
++ if (IS_ERR(lp))
++ err = PTR_ERR(lp);
++
++out:
++ ubifs_release_lprops(c);
++ return err;
++}
++
++/**
++ * ubifs_update_one_lp - update LEB properties.
++ * @c: the UBIFS file-system description object
++ * @lnum: LEB to change properties for
++ * @free: amount of free space
++ * @dirty: amount of dirty space to add
++ * @flags_set: flags to set
++ * @flags_clean: flags to clean
++ *
++ * This function is the same as 'ubifs_change_one_lp()' but @dirty is added to
++ * current dirty space, not substitutes it.
++ */
++int ubifs_update_one_lp(struct ubifs_info *c, int lnum, int free, int dirty,
++ int flags_set, int flags_clean)
++{
++ int err = 0, flags;
++ const struct ubifs_lprops *lp;
++
++ ubifs_get_lprops(c);
++
++ lp = ubifs_lpt_lookup_dirty(c, lnum);
++ if (IS_ERR(lp)) {
++ err = PTR_ERR(lp);
++ goto out;
++ }
++
++ flags = (lp->flags | flags_set) & ~flags_clean;
++ lp = ubifs_change_lp(c, lp, free, lp->dirty + dirty, flags, 0);
++ if (IS_ERR(lp))
++ err = PTR_ERR(lp);
++
++out:
++ ubifs_release_lprops(c);
++ return err;
++}
++
++/**
++ * ubifs_read_one_lp - read LEB properties.
++ * @c: the UBIFS file-system description object
++ * @lnum: LEB to read properties for
++ * @lp: where to store read properties
++ *
++ * This helper function reads properties of a LEB @lnum and stores them in @lp.
++ * Returns zero in case of success and a negative error code in case of
++ * failure.
++ */
++int ubifs_read_one_lp(struct ubifs_info *c, int lnum, struct ubifs_lprops *lp)
++{
++ int err = 0;
++ const struct ubifs_lprops *lpp;
++
++ ubifs_get_lprops(c);
++
++ lpp = ubifs_lpt_lookup(c, lnum);
++ if (IS_ERR(lpp)) {
++ err = PTR_ERR(lpp);
++ goto out;
++ }
++
++ memcpy(lp, lpp, sizeof(struct ubifs_lprops));
++
++out:
++ ubifs_release_lprops(c);
++ return err;
++}
++
++/**
++ * ubifs_fast_find_free - try to find a LEB with free space quickly.
++ * @c: the UBIFS file-system description object
++ *
++ * This function returns LEB properties for a LEB with free space or %NULL if
++ * the function is unable to find a LEB quickly.
++ */
++const struct ubifs_lprops *ubifs_fast_find_free(struct ubifs_info *c)
++{
++ struct ubifs_lprops *lprops;
++ struct ubifs_lpt_heap *heap;
++
++ ubifs_assert(mutex_is_locked(&c->lp_mutex));
++
++ heap = &c->lpt_heap[LPROPS_FREE - 1];
++ if (heap->cnt == 0)
++ return NULL;
++
++ lprops = heap->arr[0];
++ ubifs_assert(!(lprops->flags & LPROPS_TAKEN));
++ ubifs_assert(!(lprops->flags & LPROPS_INDEX));
++ return lprops;
++}
++
++/**
++ * ubifs_fast_find_empty - try to find an empty LEB quickly.
++ * @c: the UBIFS file-system description object
++ *
++ * This function returns LEB properties for an empty LEB or %NULL if the
++ * function is unable to find an empty LEB quickly.
++ */
++const struct ubifs_lprops *ubifs_fast_find_empty(struct ubifs_info *c)
++{
++ struct ubifs_lprops *lprops;
++
++ ubifs_assert(mutex_is_locked(&c->lp_mutex));
++
++ if (list_empty(&c->empty_list))
++ return NULL;
++
++ lprops = list_entry(c->empty_list.next, struct ubifs_lprops, list);
++ ubifs_assert(!(lprops->flags & LPROPS_TAKEN));
++ ubifs_assert(!(lprops->flags & LPROPS_INDEX));
++ ubifs_assert(lprops->free == c->leb_size);
++ return lprops;
++}
++
++/**
++ * ubifs_fast_find_freeable - try to find a freeable LEB quickly.
++ * @c: the UBIFS file-system description object
++ *
++ * This function returns LEB properties for a freeable LEB or %NULL if the
++ * function is unable to find a freeable LEB quickly.
++ */
++const struct ubifs_lprops *ubifs_fast_find_freeable(struct ubifs_info *c)
++{
++ struct ubifs_lprops *lprops;
++
++ ubifs_assert(mutex_is_locked(&c->lp_mutex));
++
++ if (list_empty(&c->freeable_list))
++ return NULL;
++
++ lprops = list_entry(c->freeable_list.next, struct ubifs_lprops, list);
++ ubifs_assert(!(lprops->flags & LPROPS_TAKEN));
++ ubifs_assert(!(lprops->flags & LPROPS_INDEX));
++ ubifs_assert(lprops->free + lprops->dirty == c->leb_size);
++ ubifs_assert(c->freeable_cnt > 0);
++ return lprops;
++}
++
++/**
++ * ubifs_fast_find_frdi_idx - try to find a freeable index LEB quickly.
++ * @c: the UBIFS file-system description object
++ *
++ * This function returns LEB properties for a freeable index LEB or %NULL if the
++ * function is unable to find a freeable index LEB quickly.
++ */
++const struct ubifs_lprops *ubifs_fast_find_frdi_idx(struct ubifs_info *c)
++{
++ struct ubifs_lprops *lprops;
++
++ ubifs_assert(mutex_is_locked(&c->lp_mutex));
++
++ if (list_empty(&c->frdi_idx_list))
++ return NULL;
++
++ lprops = list_entry(c->frdi_idx_list.next, struct ubifs_lprops, list);
++ ubifs_assert(!(lprops->flags & LPROPS_TAKEN));
++ ubifs_assert((lprops->flags & LPROPS_INDEX));
++ ubifs_assert(lprops->free + lprops->dirty == c->leb_size);
++ return lprops;
++}
++
++#ifdef CONFIG_UBIFS_FS_DEBUG
++
++/**
++ * dbg_check_cats - check category heaps and lists.
++ * @c: UBIFS file-system description object
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++int dbg_check_cats(struct ubifs_info *c)
++{
++ struct ubifs_lprops *lprops;
++ struct list_head *pos;
++ int i, cat;
++
++ if (!(ubifs_chk_flags & (UBIFS_CHK_GEN | UBIFS_CHK_LPROPS)))
++ return 0;
++
++ list_for_each_entry(lprops, &c->empty_list, list) {
++ if (lprops->free != c->leb_size) {
++ ubifs_err("non-empty LEB %d on empty list "
++ "(free %d dirty %d flags %d)", lprops->lnum,
++ lprops->free, lprops->dirty, lprops->flags);
++ return -EINVAL;
++ }
++ if (lprops->flags & LPROPS_TAKEN) {
++ ubifs_err("taken LEB %d on empty list "
++ "(free %d dirty %d flags %d)", lprops->lnum,
++ lprops->free, lprops->dirty, lprops->flags);
++ return -EINVAL;
++ }
++ }
++
++ i = 0;
++ list_for_each_entry(lprops, &c->freeable_list, list) {
++ if (lprops->free + lprops->dirty != c->leb_size) {
++ ubifs_err("non-freeable LEB %d on freeable list "
++ "(free %d dirty %d flags %d)", lprops->lnum,
++ lprops->free, lprops->dirty, lprops->flags);
++ return -EINVAL;
++ }
++ if (lprops->flags & LPROPS_TAKEN) {
++ ubifs_err("taken LEB %d on freeable list "
++ "(free %d dirty %d flags %d)", lprops->lnum,
++ lprops->free, lprops->dirty, lprops->flags);
++ return -EINVAL;
++ }
++ i += 1;
++ }
++ if (i != c->freeable_cnt) {
++ ubifs_err("freeable list count %d expected %d", i,
++ c->freeable_cnt);
++ return -EINVAL;
++ }
++
++ i = 0;
++ list_for_each(pos, &c->idx_gc)
++ i += 1;
++ if (i != c->idx_gc_cnt) {
++ ubifs_err("idx_gc list count %d expected %d", i,
++ c->idx_gc_cnt);
++ return -EINVAL;
++ }
++
++ list_for_each_entry(lprops, &c->frdi_idx_list, list) {
++ if (lprops->free + lprops->dirty != c->leb_size) {
++ ubifs_err("non-freeable LEB %d on frdi_idx list "
++ "(free %d dirty %d flags %d)", lprops->lnum,
++ lprops->free, lprops->dirty, lprops->flags);
++ return -EINVAL;
++ }
++ if (lprops->flags & LPROPS_TAKEN) {
++ ubifs_err("taken LEB %d on frdi_idx list "
++ "(free %d dirty %d flags %d)", lprops->lnum,
++ lprops->free, lprops->dirty, lprops->flags);
++ return -EINVAL;
++ }
++ if (!(lprops->flags & LPROPS_INDEX)) {
++ ubifs_err("non-index LEB %d on frdi_idx list "
++ "(free %d dirty %d flags %d)", lprops->lnum,
++ lprops->free, lprops->dirty, lprops->flags);
++ return -EINVAL;
++ }
++ }
++
++ for (cat = 1; cat <= LPROPS_HEAP_CNT; cat++) {
++ struct ubifs_lpt_heap *heap = &c->lpt_heap[cat - 1];
++
++ for (i = 0; i < heap->cnt; i++) {
++ lprops = heap->arr[i];
++ if (!lprops) {
++ ubifs_err("null ptr in LPT heap cat %d", cat);
++ return -EINVAL;
++ }
++ if (lprops->hpos != i) {
++ ubifs_err("bad ptr in LPT heap cat %d", cat);
++ return -EINVAL;
++ }
++ if (lprops->flags & LPROPS_TAKEN) {
++ ubifs_err("taken LEB in LPT heap cat %d", cat);
++ return -EINVAL;
++ }
++ }
++ }
++
++ return 0;
++}
++
++void dbg_check_heap(struct ubifs_info *c, struct ubifs_lpt_heap *heap, int cat,
++ int add_pos)
++{
++ int i = 0, j, err = 0;
++
++ if (!(ubifs_chk_flags & (UBIFS_CHK_GEN | UBIFS_CHK_LPROPS)))
++ return;
++
++ for (i = 0; i < heap->cnt; i++) {
++ struct ubifs_lprops *lprops = heap->arr[i];
++ struct ubifs_lprops *lp;
++
++ if (i != add_pos)
++ if ((lprops->flags & LPROPS_CAT_MASK) != cat) {
++ err = 1;
++ goto out;
++ }
++ if (lprops->hpos != i) {
++ err = 2;
++ goto out;
++ }
++ lp = ubifs_lpt_lookup(c, lprops->lnum);
++ if (IS_ERR(lp)) {
++ err = 3;
++ goto out;
++ }
++ if (lprops != lp) {
++ dbg_msg("lprops %zx lp %zx lprops->lnum %d lp->lnum %d",
++ (size_t)lprops, (size_t)lp, lprops->lnum,
++ lp->lnum);
++ err = 4;
++ goto out;
++ }
++ for (j = 0; j < i; j++) {
++ lp = heap->arr[j];
++ if (lp == lprops) {
++ err = 5;
++ goto out;
++ }
++ if (lp->lnum == lprops->lnum) {
++ err = 6;
++ goto out;
++ }
++ }
++ }
++out:
++ if (err) {
++ dbg_msg("failed cat %d hpos %d err %d", cat, i, err);
++ dbg_dump_stack();
++ dbg_dump_heap(c, heap, cat);
++ }
++}
++
++/**
++ * struct scan_check_data - data provided to scan callback function.
++ * @lst: LEB properties statistics
++ * @err: error code
++ */
++struct scan_check_data {
++ struct ubifs_lp_stats lst;
++ int err;
++};
++
++/**
++ * scan_check_cb - scan callback.
++ * @c: the UBIFS file-system description object
++ * @lp: LEB properties to scan
++ * @in_tree: whether the LEB properties are in main memory
++ * @data: information passed to and from the caller of the scan
++ *
++ * This function returns a code that indicates whether the scan should continue
++ * (%LPT_SCAN_CONTINUE), whether the LEB properties should be added to the tree
++ * in main memory (%LPT_SCAN_ADD), or whether the scan should stop
++ * (%LPT_SCAN_STOP).
++ */
++static int scan_check_cb(struct ubifs_info *c,
++ const struct ubifs_lprops *lp, int in_tree,
++ struct scan_check_data *data)
++{
++ struct ubifs_scan_leb *sleb;
++ struct ubifs_scan_node *snod;
++ struct ubifs_lp_stats *lst = &data->lst;
++ int cat, lnum = lp->lnum, is_idx = 0, used = 0, free, dirty;
++
++ cat = lp->flags & LPROPS_CAT_MASK;
++ if (cat != LPROPS_UNCAT) {
++ cat = ubifs_categorize_lprops(c, lp);
++ if (cat != (lp->flags & LPROPS_CAT_MASK)) {
++ ubifs_err("bad LEB category %d expected %d",
++ (lp->flags & LPROPS_CAT_MASK), cat);
++ goto out;
++ }
++ }
++
++ /* Check lp is on its category list (if it has one) */
++ if (in_tree) {
++ struct list_head *list = NULL;
++
++ switch (cat) {
++ case LPROPS_EMPTY:
++ list = &c->empty_list;
++ break;
++ case LPROPS_FREEABLE:
++ list = &c->freeable_list;
++ break;
++ case LPROPS_FRDI_IDX:
++ list = &c->frdi_idx_list;
++ break;
++ case LPROPS_UNCAT:
++ list = &c->uncat_list;
++ break;
++ }
++ if (list) {
++ struct ubifs_lprops *lprops;
++ int found = 0;
++
++ list_for_each_entry(lprops, list, list) {
++ if (lprops == lp) {
++ found = 1;
++ break;
++ }
++ }
++ if (!found) {
++ ubifs_err("bad LPT list (category %d)", cat);
++ goto out;
++ }
++ }
++ }
++
++ /* Check lp is on its category heap (if it has one) */
++ if (in_tree && cat > 0 && cat <= LPROPS_HEAP_CNT) {
++ struct ubifs_lpt_heap *heap = &c->lpt_heap[cat - 1];
++
++ if ((lp->hpos != -1 && heap->arr[lp->hpos]->lnum != lnum) ||
++ lp != heap->arr[lp->hpos]) {
++ ubifs_err("bad LPT heap (category %d)", cat);
++ goto out;
++ }
++ }
++
++ sleb = ubifs_scan(c, lnum, 0, c->dbg_buf);
++ if (IS_ERR(sleb)) {
++ /*
++ * After an unclean unmount, empty and freeable LEBs
++ * may contain garbage.
++ */
++ if (lp->free == c->leb_size) {
++ ubifs_err("scan errors were in empty LEB "
++ "- continuing checking");
++ lst->empty_lebs += 1;
++ lst->total_free += c->leb_size;
++ lst->total_dark += calc_dark(c, c->leb_size);
++ return LPT_SCAN_CONTINUE;
++ }
++
++ if (lp->free + lp->dirty == c->leb_size &&
++ !(lp->flags & LPROPS_INDEX)) {
++ ubifs_err("scan errors were in freeable LEB "
++ "- continuing checking");
++ lst->total_free += lp->free;
++ lst->total_dirty += lp->dirty;
++ lst->total_dark += calc_dark(c, c->leb_size);
++ return LPT_SCAN_CONTINUE;
++ }
++ data->err = PTR_ERR(sleb);
++ return LPT_SCAN_STOP;
++ }
++
++ is_idx = -1;
++ list_for_each_entry(snod, &sleb->nodes, list) {
++ int found, level = 0;
++
++ cond_resched();
++
++ if (is_idx == -1)
++ is_idx = (snod->type == UBIFS_IDX_NODE) ? 1 : 0;
++
++ if (is_idx && snod->type != UBIFS_IDX_NODE) {
++ ubifs_err("indexing node in data LEB %d:%d",
++ lnum, snod->offs);
++ goto out_destroy;
++ }
++
++ if (snod->type == UBIFS_IDX_NODE) {
++ struct ubifs_idx_node *idx = snod->node;
++
++ key_read(c, ubifs_idx_key(c, idx), &snod->key);
++ level = le16_to_cpu(idx->level);
++ }
++
++ found = ubifs_tnc_has_node(c, &snod->key, level, lnum,
++ snod->offs, is_idx);
++ if (found) {
++ if (found < 0)
++ goto out_destroy;
++ used += ALIGN(snod->len, 8);
++ }
++ }
++
++ free = c->leb_size - sleb->endpt;
++ dirty = sleb->endpt - used;
++
++ if (free > c->leb_size || free < 0 || dirty > c->leb_size ||
++ dirty < 0) {
++ ubifs_err("bad calculated accounting for LEB %d: "
++ "free %d, dirty %d", lnum, free, dirty);
++ goto out_destroy;
++ }
++
++ if (lp->free + lp->dirty == c->leb_size &&
++ free + dirty == c->leb_size)
++ if ((is_idx && !(lp->flags & LPROPS_INDEX)) ||
++ (!is_idx && free == c->leb_size)) {
++ /*
++ * Empty or freeable LEBs could contain index
++ * nodes from an uncompleted commit due to an
++ * unclean unmount. Or they could be empty for
++ * the same reason.
++ */
++ free = lp->free;
++ dirty = lp->dirty;
++ is_idx = 0;
++ }
++
++ if (is_idx && lp->free + lp->dirty == free + dirty &&
++ lnum != c->ihead_lnum) {
++ /*
++ * After an unclean unmount, an index LEB could have a different
++ * amount of free space than the value recorded by lprops. That
++ * is because the in-the-gaps method may use free space or
++ * create free space (as a side-effect of using ubi_leb_change
++ * and not writing the whole LEB). The incorrect free space
++ * value is not a problem because the index is only ever
++ * allocated empty LEBs, so there will never be an attempt to
++ * write to the free space at the end of an index LEB - except
++ * by the in-the-gaps method for which it is not a problem.
++ */
++ free = lp->free;
++ dirty = lp->dirty;
++ }
++
++ if (lp->free != free || lp->dirty != dirty)
++ goto out_print;
++
++ if (is_idx && !(lp->flags & LPROPS_INDEX)) {
++ if (free == c->leb_size)
++ /* Free but not unmapped LEB, it's fine */
++ is_idx = 0;
++ else {
++ ubifs_err("indexing node without indexing "
++ "flag");
++ goto out_print;
++ }
++ }
++
++ if (!is_idx && (lp->flags & LPROPS_INDEX)) {
++ ubifs_err("data node with indexing flag");
++ goto out_print;
++ }
++
++ if (free == c->leb_size)
++ lst->empty_lebs += 1;
++
++ if (is_idx)
++ lst->idx_lebs += 1;
++
++ if (!(lp->flags & LPROPS_INDEX))
++ lst->total_used += c->leb_size - free - dirty;
++ lst->total_free += free;
++ lst->total_dirty += dirty;
++
++ if (!(lp->flags & LPROPS_INDEX)) {
++ int spc = free + dirty;
++
++ if (spc < c->dead_wm)
++ lst->total_dead += spc;
++ else
++ lst->total_dark += calc_dark(c, spc);
++ }
++
++ ubifs_scan_destroy(sleb);
++
++ return LPT_SCAN_CONTINUE;
++
++out_print:
++ ubifs_err("bad accounting of LEB %d: free %d, dirty %d flags %#x, "
++ "should be free %d, dirty %d",
++ lnum, lp->free, lp->dirty, lp->flags, free, dirty);
++ dbg_dump_leb(c, lnum);
++out_destroy:
++ ubifs_scan_destroy(sleb);
++out:
++ data->err = -EINVAL;
++ return LPT_SCAN_STOP;
++}
++
++/**
++ * dbg_check_lprops - check all LEB properties.
++ * @c: UBIFS file-system description object
++ *
++ * This function checks all LEB properties and makes sure they are all correct.
++ * It returns zero if everything is fine, %-EINVAL if there is an inconsistency
++ * and other negative error codes in case of other errors. This function is
++ * called while the file system is locked (because of commit start), so no
++ * additional locking is required. Note that locking the LPT mutex would cause
++ * a circular lock dependency with the TNC mutex.
++ */
++int dbg_check_lprops(struct ubifs_info *c)
++{
++ int i, err;
++ struct scan_check_data data;
++ struct ubifs_lp_stats *lst = &data.lst;
++
++ if (!(ubifs_chk_flags & UBIFS_CHK_LPROPS))
++ return 0;
++
++ /*
++ * As we are going to scan the media, the write buffers have to be
++ * synchronized.
++ */
++ for (i = 0; i < c->jhead_cnt; i++) {
++ err = ubifs_wbuf_sync(&c->jheads[i].wbuf);
++ if (err)
++ return err;
++ }
++
++ memset(lst, 0, sizeof(struct ubifs_lp_stats));
++
++ data.err = 0;
++ err = ubifs_lpt_scan_nolock(c, c->main_first, c->leb_cnt - 1,
++ (ubifs_lpt_scan_callback)scan_check_cb,
++ &data);
++ if (err && err != -ENOSPC)
++ goto out;
++ if (data.err) {
++ err = data.err;
++ goto out;
++ }
++
++ if (lst->empty_lebs != c->lst.empty_lebs ||
++ lst->idx_lebs != c->lst.idx_lebs ||
++ lst->total_free != c->lst.total_free ||
++ lst->total_dirty != c->lst.total_dirty ||
++ lst->total_used != c->lst.total_used) {
++ ubifs_err("bad overall accounting");
++ ubifs_err("calculated: empty_lebs %d, idx_lebs %d, "
++ "total_free %lld, total_dirty %lld, total_used %lld",
++ lst->empty_lebs, lst->idx_lebs, lst->total_free,
++ lst->total_dirty, lst->total_used);
++ ubifs_err("read from lprops: empty_lebs %d, idx_lebs %d, "
++ "total_free %lld, total_dirty %lld, total_used %lld",
++ c->lst.empty_lebs, c->lst.idx_lebs, c->lst.total_free,
++ c->lst.total_dirty, c->lst.total_used);
++ err = -EINVAL;
++ goto out;
++ }
++
++ if (lst->total_dead != c->lst.total_dead ||
++ lst->total_dark != c->lst.total_dark) {
++ ubifs_err("bad dead/dark space accounting");
++ ubifs_err("calculated: total_dead %lld, total_dark %lld",
++ lst->total_dead, lst->total_dark);
++ ubifs_err("read from lprops: total_dead %lld, total_dark %lld",
++ c->lst.total_dead, c->lst.total_dark);
++ err = -EINVAL;
++ goto out;
++ }
++
++ err = dbg_check_cats(c);
++out:
++ return err;
++}
++
++#endif /* CONFIG_UBIFS_FS_DEBUG */
+diff --exclude=.git -urN linux-2.6.25.6/fs/ubifs/lpt.c avr32-2.6/fs/ubifs/lpt.c
+--- linux-2.6.25.6/fs/ubifs/lpt.c 1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/fs/ubifs/lpt.c 2008-06-12 15:09:45.475816115 +0200
+@@ -0,0 +1,2241 @@
++/*
++ * This file is part of UBIFS.
++ *
++ * Copyright (C) 2006-2008 Nokia Corporation.
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published by
++ * the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but WITHOUT
++ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
++ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
++ * more details.
++ *
++ * You should have received a copy of the GNU General Public License along with
++ * this program; if not, write to the Free Software Foundation, Inc., 51
++ * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
++ *
++ * Authors: Adrian Hunter
++ * Artem Bityutskiy (Битюцкий Артём)
++ */
++
++/*
++ * This file implements the LEB properties tree (LPT) area. The LPT area
++ * contains the LEB properties tree, a table of LPT area eraseblocks (ltab), and
++ * (for the "big" model) a table of saved LEB numbers (lsave). The LPT area sits
++ * between the log and the orphan area.
++ *
++ * The LPT area is like a miniature self-contained file system. It is required
++ * that it never runs out of space, is fast to access and update, and scales
++ * logarithmically. The LEB properties tree is implemented as a wandering tree
++ * much like the TNC, and the LPT area has its own garbage collection.
++ *
++ * The LPT has two slightly different forms called the "small model" and the
++ * "big model". The small model is used when the entire LEB properties table
++ * can be written into a single eraseblock. In that case, garbage collection
++ * consists of just writing the whole table, which therefore makes all other
++ * eraseblocks reusable. In the case of the big model, dirty eraseblocks are
++ * selected for garbage collection, which consists are marking the nodes in
++ * that LEB as dirty, and then only the dirty nodes are written out. Also, in
++ * the case of the big model, a table of LEB numbers is saved so that the entire
++ * LPT does not to be scanned looking for empty eraseblocks when UBIFS is first
++ * mounted.
++ */
++
++#include <linux/crc16.h>
++#include "ubifs.h"
++
++/**
++ * do_calc_lpt_geom - calculate sizes for the LPT area.
++ * @c: the UBIFS file-system description object
++ *
++ * Calculate the sizes of LPT bit fields, nodes, and tree, based on the
++ * properties of the flash and whether LPT is "big" (c->big_lpt).
++ */
++static void do_calc_lpt_geom(struct ubifs_info *c)
++{
++ int i, n, bits, per_leb_wastage, max_pnode_cnt;
++ long long sz, tot_wastage;
++
++ n = c->main_lebs + c->max_leb_cnt - c->leb_cnt;
++ max_pnode_cnt = DIV_ROUND_UP(n, UBIFS_LPT_FANOUT);
++
++ c->lpt_hght = 1;
++ n = UBIFS_LPT_FANOUT;
++ while (n < max_pnode_cnt) {
++ c->lpt_hght += 1;
++ n <<= UBIFS_LPT_FANOUT_SHIFT;
++ }
++
++ c->pnode_cnt = DIV_ROUND_UP(c->main_lebs, UBIFS_LPT_FANOUT);
++
++ n = DIV_ROUND_UP(c->pnode_cnt, UBIFS_LPT_FANOUT);
++ c->nnode_cnt = n;
++ for (i = 1; i < c->lpt_hght; i++) {
++ n = DIV_ROUND_UP(n, UBIFS_LPT_FANOUT);
++ c->nnode_cnt += n;
++ }
++
++ c->space_bits = fls(c->leb_size) - 3;
++ c->lpt_lnum_bits = fls(c->lpt_lebs);
++ c->lpt_offs_bits = fls(c->leb_size - 1);
++ c->lpt_spc_bits = fls(c->leb_size);
++
++ n = DIV_ROUND_UP(c->max_leb_cnt, UBIFS_LPT_FANOUT);
++ c->pcnt_bits = fls(n - 1);
++
++ c->lnum_bits = fls(c->max_leb_cnt - 1);
++
++ bits = UBIFS_LPT_CRC_BITS + UBIFS_LPT_TYPE_BITS +
++ (c->big_lpt ? c->pcnt_bits : 0) +
++ (c->space_bits * 2 + 1) * UBIFS_LPT_FANOUT;
++ c->pnode_sz = (bits + 7) / 8;
++
++ bits = UBIFS_LPT_CRC_BITS + UBIFS_LPT_TYPE_BITS +
++ (c->big_lpt ? c->pcnt_bits : 0) +
++ (c->lpt_lnum_bits + c->lpt_offs_bits) * UBIFS_LPT_FANOUT;
++ c->nnode_sz = (bits + 7) / 8;
++
++ bits = UBIFS_LPT_CRC_BITS + UBIFS_LPT_TYPE_BITS +
++ c->lpt_lebs * c->lpt_spc_bits * 2;
++ c->ltab_sz = (bits + 7) / 8;
++
++ bits = UBIFS_LPT_CRC_BITS + UBIFS_LPT_TYPE_BITS +
++ c->lnum_bits * c->lsave_cnt;
++ c->lsave_sz = (bits + 7) / 8;
++
++ /* Calculate the minimum LPT size */
++ c->lpt_sz = (long long)c->pnode_cnt * c->pnode_sz;
++ c->lpt_sz += (long long)c->nnode_cnt * c->nnode_sz;
++ c->lpt_sz += c->ltab_sz;
++ c->lpt_sz += c->lsave_sz;
++
++ /* Add wastage */
++ sz = c->lpt_sz;
++ per_leb_wastage = max_t(int, c->pnode_sz, c->nnode_sz);
++ sz += per_leb_wastage;
++ tot_wastage = per_leb_wastage;
++ while (sz > c->leb_size) {
++ sz += per_leb_wastage;
++ sz -= c->leb_size;
++ tot_wastage += per_leb_wastage;
++ }
++ tot_wastage += ALIGN(sz, c->min_io_size) - sz;
++ c->lpt_sz += tot_wastage;
++}
++
++/**
++ * ubifs_calc_lpt_geom - calculate and check sizes for the LPT area.
++ * @c: the UBIFS file-system description object
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++int ubifs_calc_lpt_geom(struct ubifs_info *c)
++{
++ int lebs_needed;
++ uint64_t sz;
++
++ do_calc_lpt_geom(c);
++
++ /* Verify that lpt_lebs is big enough */
++ sz = c->lpt_sz * 2; /* Must have at least 2 times the size */
++ sz += c->leb_size - 1;
++ do_div(sz, c->leb_size);
++ lebs_needed = sz;
++ if (lebs_needed > c->lpt_lebs) {
++ ubifs_err("too few LPT LEBs");
++ return -EINVAL;
++ }
++
++ /* Verify that ltab fits in a single LEB (since ltab is a single node */
++ if (c->ltab_sz > c->leb_size) {
++ ubifs_err("LPT ltab too big");
++ return -EINVAL;
++ }
++
++ return 0;
++}
++
++/**
++ * calc_dflt_lpt_geom - calculate default LPT geometry.
++ * @c: the UBIFS file-system description object
++ * @main_lebs: number of main area LEBs is passed and returned here
++ * @big_lpt: whether the LPT area is "big" is returned here
++ *
++ * The size of the LPT area depends on parameters that themselves are dependent
++ * on the size of the LPT area. This function, successively recalculates the LPT
++ * area geometry until the parameters and resultant geometry are consistent.
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++static int calc_dflt_lpt_geom(struct ubifs_info *c, int *main_lebs,
++ int *big_lpt)
++{
++ int i, lebs_needed;
++ uint64_t sz;
++
++ /* Start by assuming the minimum number of LPT LEBs */
++ c->lpt_lebs = UBIFS_MIN_LPT_LEBS;
++ c->main_lebs = *main_lebs - c->lpt_lebs;
++ if (c->main_lebs <= 0)
++ return -EINVAL;
++
++ /* And assume we will use the small LPT model */
++ c->big_lpt = 0;
++
++ /*
++ * Calculate the geometry based on assumptions above and then see if it
++ * makes sense
++ */
++ do_calc_lpt_geom(c);
++
++ /* Small LPT model must have lpt_sz < leb_size */
++ if (c->lpt_sz > c->leb_size) {
++ /* Nope, so try again using big LPT model */
++ c->big_lpt = 1;
++ do_calc_lpt_geom(c);
++ }
++
++ /* Now check there are enough LPT LEBs */
++ for (i = 0; i < 64 ; i++) {
++ sz = c->lpt_sz * 4; /* Allow 4 times the size */
++ sz += c->leb_size - 1;
++ do_div(sz, c->leb_size);
++ lebs_needed = sz;
++ if (lebs_needed > c->lpt_lebs) {
++ /* Not enough LPT LEBs so try again with more */
++ c->lpt_lebs = lebs_needed;
++ c->main_lebs = *main_lebs - c->lpt_lebs;
++ if (c->main_lebs <= 0)
++ return -EINVAL;
++ do_calc_lpt_geom(c);
++ continue;
++ }
++ if (c->ltab_sz > c->leb_size) {
++ ubifs_err("LPT ltab too big");
++ return -EINVAL;
++ }
++ *main_lebs = c->main_lebs;
++ *big_lpt = c->big_lpt;
++ return 0;
++ }
++ return -EINVAL;
++}
++
++/**
++ * pack_bits - pack bit fields end-to-end.
++ * @addr: address at which to pack (passed and next address returned)
++ * @pos: bit position at which to pack (passed and next position returned)
++ * @val: value to pack
++ * @nrbits: number of bits of value to pack (1-32)
++ */
++static void pack_bits(uint8_t **addr, int *pos, uint32_t val, int nrbits)
++{
++ uint8_t *p = *addr;
++ int b = *pos;
++
++ ubifs_assert(nrbits > 0);
++ ubifs_assert(nrbits <= 32);
++ ubifs_assert(*pos >= 0);
++ ubifs_assert(*pos < 8);
++ ubifs_assert((val >> nrbits) == 0 || nrbits == 32);
++ if (b) {
++ *p |= ((uint8_t)val) << b;
++ nrbits += b;
++ if (nrbits > 8) {
++ *++p = (uint8_t)(val >>= (8 - b));
++ if (nrbits > 16) {
++ *++p = (uint8_t)(val >>= 8);
++ if (nrbits > 24) {
++ *++p = (uint8_t)(val >>= 8);
++ if (nrbits > 32)
++ *++p = (uint8_t)(val >>= 8);
++ }
++ }
++ }
++ } else {
++ *p = (uint8_t)val;
++ if (nrbits > 8) {
++ *++p = (uint8_t)(val >>= 8);
++ if (nrbits > 16) {
++ *++p = (uint8_t)(val >>= 8);
++ if (nrbits > 24)
++ *++p = (uint8_t)(val >>= 8);
++ }
++ }
++ }
++ b = nrbits & 7;
++ if (b == 0)
++ p++;
++ *addr = p;
++ *pos = b;
++}
++
++/**
++ * ubifs_unpack_bits - unpack bit fields.
++ * @addr: address at which to unpack (passed and next address returned)
++ * @pos: bit position at which to unpack (passed and next position returned)
++ * @nrbits: number of bits of value to unpack (1-32)
++ *
++ * This functions returns the value unpacked.
++ */
++uint32_t ubifs_unpack_bits(uint8_t **addr, int *pos, int nrbits)
++{
++ const int k = 32 - nrbits;
++ uint8_t *p = *addr;
++ int b = *pos;
++ uint32_t val;
++
++ ubifs_assert(nrbits > 0);
++ ubifs_assert(nrbits <= 32);
++ ubifs_assert(*pos >= 0);
++ ubifs_assert(*pos < 8);
++ if (b) {
++ val = p[1] | ((uint32_t)p[2] << 8) | ((uint32_t)p[3] << 16) |
++ ((uint32_t)p[4] << 24);
++ val <<= (8 - b);
++ val |= *p >> b;
++ nrbits += b;
++ } else
++ val = p[0] | ((uint32_t)p[1] << 8) | ((uint32_t)p[2] << 16) |
++ ((uint32_t)p[3] << 24);
++ val <<= k;
++ val >>= k;
++ b = nrbits & 7;
++ p += nrbits / 8;
++ *addr = p;
++ *pos = b;
++ ubifs_assert((val >> nrbits) == 0 || nrbits - b == 32);
++ return val;
++}
++
++/**
++ * ubifs_pack_pnode - pack all the bit fields of a pnode.
++ * @c: UBIFS file-system description object
++ * @buf: buffer into which to pack
++ * @pnode: pnode to pack
++ */
++void ubifs_pack_pnode(struct ubifs_info *c, void *buf,
++ struct ubifs_pnode *pnode)
++{
++ uint8_t *addr = buf + UBIFS_LPT_CRC_BYTES;
++ int i, pos = 0;
++ uint16_t crc;
++
++ pack_bits(&addr, &pos, UBIFS_LPT_PNODE, UBIFS_LPT_TYPE_BITS);
++ if (c->big_lpt)
++ pack_bits(&addr, &pos, pnode->num, c->pcnt_bits);
++ for (i = 0; i < UBIFS_LPT_FANOUT; i++) {
++ pack_bits(&addr, &pos, pnode->lprops[i].free >> 3,
++ c->space_bits);
++ pack_bits(&addr, &pos, pnode->lprops[i].dirty >> 3,
++ c->space_bits);
++ if (pnode->lprops[i].flags & LPROPS_INDEX)
++ pack_bits(&addr, &pos, 1, 1);
++ else
++ pack_bits(&addr, &pos, 0, 1);
++ }
++ crc = crc16(-1, buf + UBIFS_LPT_CRC_BYTES,
++ c->pnode_sz - UBIFS_LPT_CRC_BYTES);
++ addr = buf;
++ pos = 0;
++ pack_bits(&addr, &pos, crc, UBIFS_LPT_CRC_BITS);
++}
++
++/**
++ * ubifs_pack_nnode - pack all the bit fields of a nnode.
++ * @c: UBIFS file-system description object
++ * @buf: buffer into which to pack
++ * @nnode: nnode to pack
++ */
++void ubifs_pack_nnode(struct ubifs_info *c, void *buf,
++ struct ubifs_nnode *nnode)
++{
++ uint8_t *addr = buf + UBIFS_LPT_CRC_BYTES;
++ int i, pos = 0;
++ uint16_t crc;
++
++ pack_bits(&addr, &pos, UBIFS_LPT_NNODE, UBIFS_LPT_TYPE_BITS);
++ if (c->big_lpt)
++ pack_bits(&addr, &pos, nnode->num, c->pcnt_bits);
++ for (i = 0; i < UBIFS_LPT_FANOUT; i++) {
++ int lnum = nnode->nbranch[i].lnum;
++
++ if (lnum == 0)
++ lnum = c->lpt_last + 1;
++ pack_bits(&addr, &pos, lnum - c->lpt_first, c->lpt_lnum_bits);
++ pack_bits(&addr, &pos, nnode->nbranch[i].offs,
++ c->lpt_offs_bits);
++ }
++ crc = crc16(-1, buf + UBIFS_LPT_CRC_BYTES,
++ c->nnode_sz - UBIFS_LPT_CRC_BYTES);
++ addr = buf;
++ pos = 0;
++ pack_bits(&addr, &pos, crc, UBIFS_LPT_CRC_BITS);
++}
++
++/**
++ * ubifs_pack_ltab - pack the LPT's own lprops table.
++ * @c: UBIFS file-system description object
++ * @buf: buffer into which to pack
++ * @ltab: LPT's own lprops table to pack
++ */
++void ubifs_pack_ltab(struct ubifs_info *c, void *buf,
++ struct ubifs_lpt_lprops *ltab)
++{
++ uint8_t *addr = buf + UBIFS_LPT_CRC_BYTES;
++ int i, pos = 0;
++ uint16_t crc;
++
++ pack_bits(&addr, &pos, UBIFS_LPT_LTAB, UBIFS_LPT_TYPE_BITS);
++ for (i = 0; i < c->lpt_lebs; i++) {
++ pack_bits(&addr, &pos, ltab[i].free, c->lpt_spc_bits);
++ pack_bits(&addr, &pos, ltab[i].dirty, c->lpt_spc_bits);
++ }
++ crc = crc16(-1, buf + UBIFS_LPT_CRC_BYTES,
++ c->ltab_sz - UBIFS_LPT_CRC_BYTES);
++ addr = buf;
++ pos = 0;
++ pack_bits(&addr, &pos, crc, UBIFS_LPT_CRC_BITS);
++}
++
++/**
++ * ubifs_pack_lsave - pack the LPT's save table.
++ * @c: UBIFS file-system description object
++ * @buf: buffer into which to pack
++ * @lsave: LPT's save table to pack
++ */
++void ubifs_pack_lsave(struct ubifs_info *c, void *buf, int *lsave)
++{
++ uint8_t *addr = buf + UBIFS_LPT_CRC_BYTES;
++ int i, pos = 0;
++ uint16_t crc;
++
++ pack_bits(&addr, &pos, UBIFS_LPT_LSAVE, UBIFS_LPT_TYPE_BITS);
++ for (i = 0; i < c->lsave_cnt; i++)
++ pack_bits(&addr, &pos, lsave[i], c->lnum_bits);
++ crc = crc16(-1, buf + UBIFS_LPT_CRC_BYTES,
++ c->lsave_sz - UBIFS_LPT_CRC_BYTES);
++ addr = buf;
++ pos = 0;
++ pack_bits(&addr, &pos, crc, UBIFS_LPT_CRC_BITS);
++}
++
++/**
++ * ubifs_add_lpt_dirt - add dirty space to LPT LEB properties.
++ * @c: UBIFS file-system description object
++ * @lnum: LEB number to which to add dirty space
++ * @dirty: amount of dirty space to add
++ */
++void ubifs_add_lpt_dirt(struct ubifs_info *c, int lnum, int dirty)
++{
++ if (!dirty || !lnum)
++ return;
++ dbg_lp("LEB %d add %d to %d",
++ lnum, dirty, c->ltab[lnum - c->lpt_first].dirty);
++ ubifs_assert(lnum >= c->lpt_first && lnum <= c->lpt_last);
++ c->ltab[lnum - c->lpt_first].dirty += dirty;
++}
++
++/**
++ * set_ltab - set LPT LEB properties.
++ * @c: UBIFS file-system description object
++ * @lnum: LEB number
++ * @free: amount of free space
++ * @dirty: amount of dirty space
++ */
++static void set_ltab(struct ubifs_info *c, int lnum, int free, int dirty)
++{
++ dbg_lp("LEB %d free %d dirty %d to %d %d",
++ lnum, c->ltab[lnum - c->lpt_first].free,
++ c->ltab[lnum - c->lpt_first].dirty, free, dirty);
++ ubifs_assert(lnum >= c->lpt_first && lnum <= c->lpt_last);
++ c->ltab[lnum - c->lpt_first].free = free;
++ c->ltab[lnum - c->lpt_first].dirty = dirty;
++}
++
++/**
++ * ubifs_add_nnode_dirt - add dirty space to LPT LEB properties.
++ * @c: UBIFS file-system description object
++ * @nnode: nnode for which to add dirt
++ */
++void ubifs_add_nnode_dirt(struct ubifs_info *c, struct ubifs_nnode *nnode)
++{
++ struct ubifs_nnode *np = nnode->parent;
++
++ if (np)
++ ubifs_add_lpt_dirt(c, np->nbranch[nnode->iip].lnum,
++ c->nnode_sz);
++ else {
++ ubifs_add_lpt_dirt(c, c->lpt_lnum, c->nnode_sz);
++ if (!(c->lpt_drty_flgs & LTAB_DIRTY)) {
++ c->lpt_drty_flgs |= LTAB_DIRTY;
++ ubifs_add_lpt_dirt(c, c->ltab_lnum, c->ltab_sz);
++ }
++ }
++}
++
++/**
++ * add_pnode_dirt - add dirty space to LPT LEB properties.
++ * @c: UBIFS file-system description object
++ * @pnode: pnode for which to add dirt
++ */
++static void add_pnode_dirt(struct ubifs_info *c, struct ubifs_pnode *pnode)
++{
++ ubifs_add_lpt_dirt(c, pnode->parent->nbranch[pnode->iip].lnum,
++ c->pnode_sz);
++}
++
++/**
++ * calc_nnode_num - calculate nnode number.
++ * @row: the row in the tree (root is zero)
++ * @col: the column in the row (leftmost is zero)
++ *
++ * The nnode number is a number that uniquely identifies a nnode and can be used
++ * easily to traverse the tree from the root to that nnode.
++ *
++ * This function calculates and returns the nnode number for the nnode at @row
++ * and @col.
++ */
++static int calc_nnode_num(int row, int col)
++{
++ int num, bits;
++
++ num = 1;
++ while (row--) {
++ bits = (col & (UBIFS_LPT_FANOUT - 1));
++ col >>= UBIFS_LPT_FANOUT_SHIFT;
++ num <<= UBIFS_LPT_FANOUT_SHIFT;
++ num |= bits;
++ }
++ return num;
++}
++
++/**
++ * calc_nnode_num_from_parent - calculate nnode number.
++ * @c: UBIFS file-system description object
++ * @parent: parent nnode
++ * @iip: index in parent
++ *
++ * The nnode number is a number that uniquely identifies a nnode and can be used
++ * easily to traverse the tree from the root to that nnode.
++ *
++ * This function calculates and returns the nnode number based on the parent's
++ * nnode number and the index in parent.
++ */
++static int calc_nnode_num_from_parent(struct ubifs_info *c,
++ struct ubifs_nnode *parent, int iip)
++{
++ int num, shft;
++
++ if (!parent)
++ return 1;
++ shft = (c->lpt_hght - parent->level) * UBIFS_LPT_FANOUT_SHIFT;
++ num = parent->num ^ (1 << shft);
++ num |= (UBIFS_LPT_FANOUT + iip) << shft;
++ return num;
++}
++
++/**
++ * calc_pnode_num_from_parent - calculate pnode number.
++ * @c: UBIFS file-system description object
++ * @parent: parent nnode
++ * @iip: index in parent
++ *
++ * The pnode number is a number that uniquely identifies a pnode and can be used
++ * easily to traverse the tree from the root to that pnode.
++ *
++ * This function calculates and returns the pnode number based on the parent's
++ * nnode number and the index in parent.
++ */
++static int calc_pnode_num_from_parent(struct ubifs_info *c,
++ struct ubifs_nnode *parent, int iip)
++{
++ int i, n = c->lpt_hght - 1, pnum = parent->num, num = 0;
++
++ for (i = 0; i < n; i++) {
++ num <<= UBIFS_LPT_FANOUT_SHIFT;
++ num |= pnum & (UBIFS_LPT_FANOUT - 1);
++ pnum >>= UBIFS_LPT_FANOUT_SHIFT;
++ }
++ num <<= UBIFS_LPT_FANOUT_SHIFT;
++ num |= iip;
++ return num;
++}
++
++/**
++ * ubifs_create_dflt_lpt - create default LPT.
++ * @c: UBIFS file-system description object
++ * @main_lebs: number of main area LEBs is passed and returned here
++ * @lpt_first: LEB number of first LPT LEB
++ * @lpt_lebs: number of LEBs for LPT is passed and returned here
++ * @big_lpt: use big LPT model is passed and returned here
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++int ubifs_create_dflt_lpt(struct ubifs_info *c, int *main_lebs, int lpt_first,
++ int *lpt_lebs, int *big_lpt)
++{
++ int lnum, err = 0, node_sz, iopos, i, j, cnt, len, alen, row;
++ int blnum, boffs, bsz, bcnt;
++ struct ubifs_pnode *pnode = NULL;
++ struct ubifs_nnode *nnode = NULL;
++ void *buf = NULL, *p;
++ struct ubifs_lpt_lprops *ltab = NULL;
++ int *lsave = NULL;
++
++ err = calc_dflt_lpt_geom(c, main_lebs, big_lpt);
++ if (err)
++ return err;
++ *lpt_lebs = c->lpt_lebs;
++
++ /* Needed by 'ubifs_pack_nnode()' and 'set_ltab()' */
++ c->lpt_first = lpt_first;
++ /* Needed by 'set_ltab()' */
++ c->lpt_last = lpt_first + c->lpt_lebs - 1;
++ /* Needed by 'ubifs_pack_lsave()' */
++ c->main_first = c->leb_cnt - *main_lebs;
++
++ lsave = kmalloc(sizeof(int) * c->lsave_cnt, GFP_KERNEL);
++ pnode = kzalloc(sizeof(struct ubifs_pnode), GFP_KERNEL);
++ nnode = kzalloc(sizeof(struct ubifs_nnode), GFP_KERNEL);
++ buf = vmalloc(c->leb_size);
++ ltab = vmalloc(sizeof(struct ubifs_lpt_lprops) * c->lpt_lebs);
++ if (!pnode || !nnode || !buf || !ltab || !lsave) {
++ err = -ENOMEM;
++ goto out;
++ }
++
++ ubifs_assert(!c->ltab);
++ c->ltab = ltab; /* Needed by set_ltab */
++
++ /* Initialize LPT's own lprops */
++ for (i = 0; i < c->lpt_lebs; i++) {
++ ltab[i].free = c->leb_size;
++ ltab[i].dirty = 0;
++ ltab[i].tgc = 0;
++ ltab[i].cmt = 0;
++ }
++
++ lnum = lpt_first;
++ p = buf;
++ /* Number of leaf nodes (pnodes) */
++ cnt = c->pnode_cnt;
++
++ /*
++ * The first pnode contains the LEB properties for the LEBs that contain
++ * the root inode node and the root index node of the index tree.
++ */
++ node_sz = ALIGN(ubifs_idx_node_sz(c, 1), 8);
++ iopos = ALIGN(node_sz, c->min_io_size);
++ pnode->lprops[0].free = c->leb_size - iopos;
++ pnode->lprops[0].dirty = iopos - node_sz;
++ pnode->lprops[0].flags = LPROPS_INDEX;
++
++ node_sz = UBIFS_INO_NODE_SZ;
++ iopos = ALIGN(node_sz, c->min_io_size);
++ pnode->lprops[1].free = c->leb_size - iopos;
++ pnode->lprops[1].dirty = iopos - node_sz;
++
++ for (i = 2; i < UBIFS_LPT_FANOUT; i++)
++ pnode->lprops[i].free = c->leb_size;
++
++ /* Add first pnode */
++ ubifs_pack_pnode(c, p, pnode);
++ p += c->pnode_sz;
++ len = c->pnode_sz;
++ pnode->num += 1;
++
++ /* Reset pnode values for remaining pnodes */
++ pnode->lprops[0].free = c->leb_size;
++ pnode->lprops[0].dirty = 0;
++ pnode->lprops[0].flags = 0;
++
++ pnode->lprops[1].free = c->leb_size;
++ pnode->lprops[1].dirty = 0;
++
++ /*
++ * To calculate the internal node branches, we keep information about
++ * the level below.
++ */
++ blnum = lnum; /* LEB number of level below */
++ boffs = 0; /* Offset of level below */
++ bcnt = cnt; /* Number of nodes in level below */
++ bsz = c->pnode_sz; /* Size of nodes in level below */
++
++ /* Add all remaining pnodes */
++ for (i = 1; i < cnt; i++) {
++ if (len + c->pnode_sz > c->leb_size) {
++ alen = ALIGN(len, c->min_io_size);
++ set_ltab(c, lnum, c->leb_size - alen, alen - len);
++ memset(p, 0xff, alen - len);
++ err = ubi_leb_change(c->ubi, lnum++, buf, alen,
++ UBI_SHORTTERM);
++ if (err)
++ goto out;
++ p = buf;
++ len = 0;
++ }
++ ubifs_pack_pnode(c, p, pnode);
++ p += c->pnode_sz;
++ len += c->pnode_sz;
++ /*
++ * pnodes are simply numbered left to right starting at zero,
++ * which means the pnode number can be used easily to traverse
++ * down the tree to the corresponding pnode.
++ */
++ pnode->num += 1;
++ }
++
++ row = 0;
++ for (i = UBIFS_LPT_FANOUT; cnt > i; i <<= UBIFS_LPT_FANOUT_SHIFT)
++ row += 1;
++ /* Add all nnodes, one level at a time */
++ while (1) {
++ /* Number of internal nodes (nnodes) at next level */
++ cnt = DIV_ROUND_UP(cnt, UBIFS_LPT_FANOUT);
++ for (i = 0; i < cnt; i++) {
++ if (len + c->nnode_sz > c->leb_size) {
++ alen = ALIGN(len, c->min_io_size);
++ set_ltab(c, lnum, c->leb_size - alen,
++ alen - len);
++ memset(p, 0xff, alen - len);
++ err = ubi_leb_change(c->ubi, lnum++, buf, alen,
++ UBI_SHORTTERM);
++ if (err)
++ goto out;
++ p = buf;
++ len = 0;
++ }
++ /* Only 1 nnode at this level, so it is the root */
++ if (cnt == 1) {
++ c->lpt_lnum = lnum;
++ c->lpt_offs = len;
++ }
++ /* Set branches to the level below */
++ for (j = 0; j < UBIFS_LPT_FANOUT; j++) {
++ if (bcnt) {
++ if (boffs + bsz > c->leb_size) {
++ blnum += 1;
++ boffs = 0;
++ }
++ nnode->nbranch[j].lnum = blnum;
++ nnode->nbranch[j].offs = boffs;
++ boffs += bsz;
++ bcnt--;
++ } else {
++ nnode->nbranch[j].lnum = 0;
++ nnode->nbranch[j].offs = 0;
++ }
++ }
++ nnode->num = calc_nnode_num(row, i);
++ ubifs_pack_nnode(c, p, nnode);
++ p += c->nnode_sz;
++ len += c->nnode_sz;
++ }
++ /* Only 1 nnode at this level, so it is the root */
++ if (cnt == 1)
++ break;
++ /* Update the information about the level below */
++ bcnt = cnt;
++ bsz = c->nnode_sz;
++ row -= 1;
++ }
++
++ if (*big_lpt) {
++ /* Need to add LPT's save table */
++ if (len + c->lsave_sz > c->leb_size) {
++ alen = ALIGN(len, c->min_io_size);
++ set_ltab(c, lnum, c->leb_size - alen, alen - len);
++ memset(p, 0xff, alen - len);
++ err = ubi_leb_change(c->ubi, lnum++, buf, alen,
++ UBI_SHORTTERM);
++ if (err)
++ goto out;
++ p = buf;
++ len = 0;
++ }
++
++ c->lsave_lnum = lnum;
++ c->lsave_offs = len;
++
++ for (i = 0; i < c->lsave_cnt && i < *main_lebs; i++)
++ lsave[i] = c->main_first + i;
++ for (; i < c->lsave_cnt; i++)
++ lsave[i] = c->main_first;
++
++ ubifs_pack_lsave(c, p, lsave);
++ p += c->lsave_sz;
++ len += c->lsave_sz;
++ }
++
++ /* Need to add LPT's own LEB properties table */
++ if (len + c->ltab_sz > c->leb_size) {
++ alen = ALIGN(len, c->min_io_size);
++ set_ltab(c, lnum, c->leb_size - alen, alen - len);
++ memset(p, 0xff, alen - len);
++ err = ubi_leb_change(c->ubi, lnum++, buf, alen, UBI_SHORTTERM);
++ if (err)
++ goto out;
++ p = buf;
++ len = 0;
++ }
++
++ c->ltab_lnum = lnum;
++ c->ltab_offs = len;
++
++ /* Update ltab before packing it */
++ len += c->ltab_sz;
++ alen = ALIGN(len, c->min_io_size);
++ set_ltab(c, lnum, c->leb_size - alen, alen - len);
++
++ ubifs_pack_ltab(c, p, ltab);
++ p += c->ltab_sz;
++
++ /* Write remaining buffer */
++ memset(p, 0xff, alen - len);
++ err = ubi_leb_change(c->ubi, lnum, buf, alen, UBI_SHORTTERM);
++ if (err)
++ goto out;
++
++ c->nhead_lnum = lnum;
++ c->nhead_offs = ALIGN(len, c->min_io_size);
++
++ dbg_lp("space_bits %d", c->space_bits);
++ dbg_lp("lpt_lnum_bits %d", c->lpt_lnum_bits);
++ dbg_lp("lpt_offs_bits %d", c->lpt_offs_bits);
++ dbg_lp("lpt_spc_bits %d", c->lpt_spc_bits);
++ dbg_lp("pcnt_bits %d", c->pcnt_bits);
++ dbg_lp("lnum_bits %d", c->lnum_bits);
++ dbg_lp("pnode_sz %d", c->pnode_sz);
++ dbg_lp("nnode_sz %d", c->nnode_sz);
++ dbg_lp("ltab_sz %d", c->ltab_sz);
++ dbg_lp("lsave_sz %d", c->lsave_sz);
++ dbg_lp("lsave_cnt %d", c->lsave_cnt);
++ dbg_lp("lpt_hght %d", c->lpt_hght);
++ dbg_lp("big_lpt %d", c->big_lpt);
++ dbg_lp("LPT root is at %d:%d", c->lpt_lnum, c->lpt_offs);
++ dbg_lp("LPT head is at %d:%d", c->nhead_lnum, c->nhead_offs);
++ dbg_lp("LPT ltab is at %d:%d", c->ltab_lnum, c->ltab_offs);
++ if (c->big_lpt)
++ dbg_lp("LPT lsave is at %d:%d", c->lsave_lnum, c->lsave_offs);
++out:
++ c->ltab = NULL;
++ kfree(lsave);
++ vfree(ltab);
++ vfree(buf);
++ kfree(nnode);
++ kfree(pnode);
++ return err;
++}
++
++/**
++ * update_cats - add LEB properties of a pnode to LEB category lists and heaps.
++ * @c: UBIFS file-system description object
++ * @pnode: pnode
++ *
++ * When a pnode is loaded into memory, the LEB properties it contains are added,
++ * by this function, to the LEB category lists and heaps.
++ */
++static void update_cats(struct ubifs_info *c, struct ubifs_pnode *pnode)
++{
++ int i;
++
++ for (i = 0; i < UBIFS_LPT_FANOUT; i++) {
++ int cat = pnode->lprops[i].flags & LPROPS_CAT_MASK;
++ int lnum = pnode->lprops[i].lnum;
++
++ if (!lnum)
++ return;
++ ubifs_add_to_cat(c, &pnode->lprops[i], cat);
++ }
++}
++
++/**
++ * replace_cats - add LEB properties of a pnode to LEB category lists and heaps.
++ * @c: UBIFS file-system description object
++ * @old_pnode: pnode copied
++ * @new_pnode: pnode copy
++ *
++ * During commit it is sometimes necessary to copy a pnode
++ * (see dirty_cow_pnode). When that happens, references in
++ * category lists and heaps must be replaced. This function does that.
++ */
++static void replace_cats(struct ubifs_info *c, struct ubifs_pnode *old_pnode,
++ struct ubifs_pnode *new_pnode)
++{
++ int i;
++
++ for (i = 0; i < UBIFS_LPT_FANOUT; i++) {
++ if (!new_pnode->lprops[i].lnum)
++ return;
++ ubifs_replace_cat(c, &old_pnode->lprops[i],
++ &new_pnode->lprops[i]);
++ }
++}
++
++/**
++ * check_lpt_crc - check LPT node crc is correct.
++ * @c: UBIFS file-system description object
++ * @buf: buffer containing node
++ * @len: length of node
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++static int check_lpt_crc(void *buf, int len)
++{
++ int pos = 0;
++ uint8_t *addr = buf;
++ uint16_t crc, calc_crc;
++
++ crc = ubifs_unpack_bits(&addr, &pos, UBIFS_LPT_CRC_BITS);
++ calc_crc = crc16(-1, buf + UBIFS_LPT_CRC_BYTES,
++ len - UBIFS_LPT_CRC_BYTES);
++ if (crc != calc_crc) {
++ ubifs_err("invalid crc in LPT node: crc %hx calc %hx", crc,
++ calc_crc);
++ dbg_dump_stack();
++ return -EINVAL;
++ }
++ return 0;
++}
++
++/**
++ * check_lpt_type - check LPT node type is correct.
++ * @c: UBIFS file-system description object
++ * @addr: address of type bit field is passed and returned updated here
++ * @pos: position of type bit field is passed and returned updated here
++ * @type: expected type
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++static int check_lpt_type(uint8_t **addr, int *pos, int type)
++{
++ int node_type;
++
++ node_type = ubifs_unpack_bits(addr, pos, UBIFS_LPT_TYPE_BITS);
++ if (node_type != type) {
++ ubifs_err("invalid type (%d) in LPT node type %d", node_type,
++ type);
++ dbg_dump_stack();
++ return -EINVAL;
++ }
++ return 0;
++}
++
++/**
++ * unpack_pnode - unpack a pnode.
++ * @c: UBIFS file-system description object
++ * @buf: buffer containing packed pnode to unpack
++ * @pnode: pnode structure to fill
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++static int unpack_pnode(struct ubifs_info *c, void *buf,
++ struct ubifs_pnode *pnode)
++{
++ uint8_t *addr = buf + UBIFS_LPT_CRC_BYTES;
++ int i, pos = 0, err;
++
++ err = check_lpt_type(&addr, &pos, UBIFS_LPT_PNODE);
++ if (err)
++ return err;
++ if (c->big_lpt)
++ pnode->num = ubifs_unpack_bits(&addr, &pos, c->pcnt_bits);
++ for (i = 0; i < UBIFS_LPT_FANOUT; i++) {
++ struct ubifs_lprops * const lprops = &pnode->lprops[i];
++
++ lprops->free = ubifs_unpack_bits(&addr, &pos, c->space_bits);
++ lprops->free <<= 3;
++ lprops->dirty = ubifs_unpack_bits(&addr, &pos, c->space_bits);
++ lprops->dirty <<= 3;
++
++ if (ubifs_unpack_bits(&addr, &pos, 1))
++ lprops->flags = LPROPS_INDEX;
++ else
++ lprops->flags = 0;
++ lprops->flags |= ubifs_categorize_lprops(c, lprops);
++ }
++ err = check_lpt_crc(buf, c->pnode_sz);
++ return err;
++}
++
++/**
++ * unpack_nnode - unpack a nnode.
++ * @c: UBIFS file-system description object
++ * @buf: buffer containing packed nnode to unpack
++ * @nnode: nnode structure to fill
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++static int unpack_nnode(struct ubifs_info *c, void *buf,
++ struct ubifs_nnode *nnode)
++{
++ uint8_t *addr = buf + UBIFS_LPT_CRC_BYTES;
++ int i, pos = 0, err;
++
++ err = check_lpt_type(&addr, &pos, UBIFS_LPT_NNODE);
++ if (err)
++ return err;
++ if (c->big_lpt)
++ nnode->num = ubifs_unpack_bits(&addr, &pos, c->pcnt_bits);
++ for (i = 0; i < UBIFS_LPT_FANOUT; i++) {
++ int lnum;
++
++ lnum = ubifs_unpack_bits(&addr, &pos, c->lpt_lnum_bits) +
++ c->lpt_first;
++ if (lnum == c->lpt_last + 1)
++ lnum = 0;
++ nnode->nbranch[i].lnum = lnum;
++ nnode->nbranch[i].offs = ubifs_unpack_bits(&addr, &pos,
++ c->lpt_offs_bits);
++ }
++ err = check_lpt_crc(buf, c->nnode_sz);
++ return err;
++}
++
++/**
++ * unpack_ltab - unpack the LPT's own lprops table.
++ * @c: UBIFS file-system description object
++ * @buf: buffer from which to unpack
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++static int unpack_ltab(struct ubifs_info *c, void *buf)
++{
++ uint8_t *addr = buf + UBIFS_LPT_CRC_BYTES;
++ int i, pos = 0, err;
++
++ err = check_lpt_type(&addr, &pos, UBIFS_LPT_LTAB);
++ if (err)
++ return err;
++ for (i = 0; i < c->lpt_lebs; i++) {
++ int free = ubifs_unpack_bits(&addr, &pos, c->lpt_spc_bits);
++ int dirty = ubifs_unpack_bits(&addr, &pos, c->lpt_spc_bits);
++
++ if (free < 0 || free > c->leb_size || dirty < 0 ||
++ dirty > c->leb_size || free + dirty > c->leb_size)
++ return -EINVAL;
++
++ c->ltab[i].free = free;
++ c->ltab[i].dirty = dirty;
++ c->ltab[i].tgc = 0;
++ c->ltab[i].cmt = 0;
++ }
++ err = check_lpt_crc(buf, c->ltab_sz);
++ return err;
++}
++
++/**
++ * unpack_lsave - unpack the LPT's save table.
++ * @c: UBIFS file-system description object
++ * @buf: buffer from which to unpack
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++static int unpack_lsave(struct ubifs_info *c, void *buf)
++{
++ uint8_t *addr = buf + UBIFS_LPT_CRC_BYTES;
++ int i, pos = 0, err;
++
++ err = check_lpt_type(&addr, &pos, UBIFS_LPT_LSAVE);
++ if (err)
++ return err;
++ for (i = 0; i < c->lsave_cnt; i++) {
++ int lnum = ubifs_unpack_bits(&addr, &pos, c->lnum_bits);
++
++ if (lnum < c->main_first || lnum >= c->leb_cnt)
++ return -EINVAL;
++ c->lsave[i] = lnum;
++ }
++ err = check_lpt_crc(buf, c->lsave_sz);
++ return err;
++}
++
++/**
++ * validate_nnode - validate a nnode.
++ * @c: UBIFS file-system description object
++ * @nnode: nnode to validate
++ * @parent: parent nnode (or NULL for the root nnode)
++ * @iip: index in parent
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++static int validate_nnode(struct ubifs_info *c, struct ubifs_nnode *nnode,
++ struct ubifs_nnode *parent, int iip)
++{
++ int i, lvl, max_offs;
++
++ if (c->big_lpt) {
++ int num = calc_nnode_num_from_parent(c, parent, iip);
++
++ if (nnode->num != num)
++ return -EINVAL;
++ }
++ lvl = parent ? parent->level - 1 : c->lpt_hght;
++ if (lvl < 1)
++ return -EINVAL;
++ if (lvl == 1)
++ max_offs = c->leb_size - c->pnode_sz;
++ else
++ max_offs = c->leb_size - c->nnode_sz;
++ for (i = 0; i < UBIFS_LPT_FANOUT; i++) {
++ int lnum = nnode->nbranch[i].lnum;
++ int offs = nnode->nbranch[i].offs;
++
++ if (lnum == 0) {
++ if (offs != 0)
++ return -EINVAL;
++ continue;
++ }
++ if (lnum < c->lpt_first || lnum > c->lpt_last)
++ return -EINVAL;
++ if (offs < 0 || offs > max_offs)
++ return -EINVAL;
++ }
++ return 0;
++}
++
++/**
++ * validate_pnode - validate a pnode.
++ * @c: UBIFS file-system description object
++ * @pnode: pnode to validate
++ * @parent: parent nnode
++ * @iip: index in parent
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++static int validate_pnode(struct ubifs_info *c, struct ubifs_pnode *pnode,
++ struct ubifs_nnode *parent, int iip)
++{
++ int i;
++
++ if (c->big_lpt) {
++ int num = calc_pnode_num_from_parent(c, parent, iip);
++
++ if (pnode->num != num)
++ return -EINVAL;
++ }
++ for (i = 0; i < UBIFS_LPT_FANOUT; i++) {
++ int free = pnode->lprops[i].free;
++ int dirty = pnode->lprops[i].dirty;
++
++ if (free < 0 || free > c->leb_size || free % c->min_io_size ||
++ (free & 7))
++ return -EINVAL;
++ if (dirty < 0 || dirty > c->leb_size || (dirty & 7))
++ return -EINVAL;
++ if (dirty + free > c->leb_size)
++ return -EINVAL;
++ }
++ return 0;
++}
++
++/**
++ * set_pnode_lnum - set LEB numbers on a pnode.
++ * @c: UBIFS file-system description object
++ * @pnode: pnode to update
++ *
++ * This function calculates the LEB numbers for the LEB properties it contains
++ * based on the pnode number.
++ */
++static void set_pnode_lnum(struct ubifs_info *c, struct ubifs_pnode *pnode)
++{
++ int i, lnum;
++
++ lnum = (pnode->num << UBIFS_LPT_FANOUT_SHIFT) + c->main_first;
++ for (i = 0; i < UBIFS_LPT_FANOUT; i++) {
++ if (lnum >= c->leb_cnt)
++ return;
++ pnode->lprops[i].lnum = lnum++;
++ }
++}
++
++/**
++ * ubifs_read_nnode - read a nnode from flash and link it to the tree in memory.
++ * @c: UBIFS file-system description object
++ * @parent: parent nnode (or NULL for the root)
++ * @iip: index in parent
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++int ubifs_read_nnode(struct ubifs_info *c, struct ubifs_nnode *parent, int iip)
++{
++ struct ubifs_nbranch *branch = NULL;
++ struct ubifs_nnode *nnode = NULL;
++ void *buf = c->lpt_nod_buf;
++ int err, lnum, offs;
++
++ if (parent) {
++ branch = &parent->nbranch[iip];
++ lnum = branch->lnum;
++ offs = branch->offs;
++ } else {
++ lnum = c->lpt_lnum;
++ offs = c->lpt_offs;
++ }
++ nnode = kzalloc(sizeof(struct ubifs_nnode), GFP_NOFS);
++ if (!nnode) {
++ err = -ENOMEM;
++ goto out;
++ }
++ if (lnum == 0) {
++ /*
++ * This nnode was not written which just means that the LEB
++ * properties in the subtree below it describe empty LEBs. We
++ * make the nnode as though we had read it, which in fact means
++ * doing almost nothing.
++ */
++ if (c->big_lpt)
++ nnode->num = calc_nnode_num_from_parent(c, parent, iip);
++ } else {
++ err = ubi_read(c->ubi, lnum, buf, offs, c->nnode_sz);
++ if (err)
++ goto out;
++ err = unpack_nnode(c, buf, nnode);
++ if (err)
++ goto out;
++ }
++ err = validate_nnode(c, nnode, parent, iip);
++ if (err)
++ goto out;
++ if (!c->big_lpt)
++ nnode->num = calc_nnode_num_from_parent(c, parent, iip);
++ if (parent) {
++ branch->nnode = nnode;
++ nnode->level = parent->level - 1;
++ } else {
++ c->nroot = nnode;
++ nnode->level = c->lpt_hght;
++ }
++ nnode->parent = parent;
++ nnode->iip = iip;
++ return 0;
++
++out:
++ ubifs_err("error %d reading nnode at %d:%d", err, lnum, offs);
++ kfree(nnode);
++ return err;
++}
++
++/**
++ * read_pnode - read a pnode from flash and link it to the tree in memory.
++ * @c: UBIFS file-system description object
++ * @parent: parent nnode
++ * @iip: index in parent
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++static int read_pnode(struct ubifs_info *c, struct ubifs_nnode *parent, int iip)
++{
++ struct ubifs_nbranch *branch;
++ struct ubifs_pnode *pnode = NULL;
++ void *buf = c->lpt_nod_buf;
++ int err, lnum, offs;
++
++ branch = &parent->nbranch[iip];
++ lnum = branch->lnum;
++ offs = branch->offs;
++ pnode = kzalloc(sizeof(struct ubifs_pnode), GFP_NOFS);
++ if (!pnode) {
++ err = -ENOMEM;
++ goto out;
++ }
++ if (lnum == 0) {
++ /*
++ * This pnode was not written which just means that the LEB
++ * properties in it describe empty LEBs. We make the pnode as
++ * though we had read it.
++ */
++ int i;
++
++ if (c->big_lpt)
++ pnode->num = calc_pnode_num_from_parent(c, parent, iip);
++ for (i = 0; i < UBIFS_LPT_FANOUT; i++) {
++ struct ubifs_lprops * const lprops = &pnode->lprops[i];
++
++ lprops->free = c->leb_size;
++ lprops->flags = ubifs_categorize_lprops(c, lprops);
++ }
++ } else {
++ err = ubi_read(c->ubi, lnum, buf, offs, c->pnode_sz);
++ if (err)
++ goto out;
++ err = unpack_pnode(c, buf, pnode);
++ if (err)
++ goto out;
++ }
++ err = validate_pnode(c, pnode, parent, iip);
++ if (err)
++ goto out;
++ if (!c->big_lpt)
++ pnode->num = calc_pnode_num_from_parent(c, parent, iip);
++ branch->pnode = pnode;
++ pnode->parent = parent;
++ pnode->iip = iip;
++ set_pnode_lnum(c, pnode);
++ c->pnodes_have += 1;
++ return 0;
++
++out:
++ ubifs_err("error %d reading pnode at %d:%d", err, lnum, offs);
++ dbg_dump_pnode(c, pnode, parent, iip);
++ dbg_msg("calc num: %d", calc_pnode_num_from_parent(c, parent, iip));
++ kfree(pnode);
++ return err;
++}
++
++/**
++ * read_ltab - read LPT's own lprops table.
++ * @c: UBIFS file-system description object
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++static int read_ltab(struct ubifs_info *c)
++{
++ int err;
++ void *buf;
++
++ buf = vmalloc(c->ltab_sz);
++ if (!buf)
++ return -ENOMEM;
++ err = ubi_read(c->ubi, c->ltab_lnum, buf, c->ltab_offs, c->ltab_sz);
++ if (err)
++ goto out;
++ err = unpack_ltab(c, buf);
++out:
++ vfree(buf);
++ return err;
++}
++
++/**
++ * read_lsave - read LPT's save table.
++ * @c: UBIFS file-system description object
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++static int read_lsave(struct ubifs_info *c)
++{
++ int err, i;
++ void *buf;
++
++ buf = vmalloc(c->lsave_sz);
++ if (!buf)
++ return -ENOMEM;
++ err = ubi_read(c->ubi, c->lsave_lnum, buf, c->lsave_offs, c->lsave_sz);
++ if (err)
++ goto out;
++ err = unpack_lsave(c, buf);
++ if (err)
++ goto out;
++ for (i = 0; i < c->lsave_cnt; i++) {
++ int lnum = c->lsave[i];
++
++ /*
++ * Due to automatic resizing, the values in the lsave table
++ * could be beyond the volume size - just ignore them.
++ */
++ if (lnum >= c->leb_cnt)
++ continue;
++ ubifs_lpt_lookup(c, lnum);
++ }
++out:
++ vfree(buf);
++ return err;
++}
++
++/**
++ * ubifs_get_nnode - get a nnode.
++ * @c: UBIFS file-system description object
++ * @parent: parent nnode (or NULL for the root)
++ * @iip: index in parent
++ *
++ * This function returns a pointer to the nnode on success or a negative error
++ * code on failure.
++ */
++struct ubifs_nnode *ubifs_get_nnode(struct ubifs_info *c,
++ struct ubifs_nnode *parent, int iip)
++{
++ struct ubifs_nbranch *branch;
++ struct ubifs_nnode *nnode;
++ int err;
++
++ branch = &parent->nbranch[iip];
++ nnode = branch->nnode;
++ if (nnode)
++ return nnode;
++ err = ubifs_read_nnode(c, parent, iip);
++ if (err)
++ return ERR_PTR(err);
++ return branch->nnode;
++}
++
++/**
++ * ubifs_get_pnode - get a pnode.
++ * @c: UBIFS file-system description object
++ * @parent: parent nnode
++ * @iip: index in parent
++ *
++ * This function returns a pointer to the pnode on success or a negative error
++ * code on failure.
++ */
++struct ubifs_pnode *ubifs_get_pnode(struct ubifs_info *c,
++ struct ubifs_nnode *parent, int iip)
++{
++ struct ubifs_nbranch *branch;
++ struct ubifs_pnode *pnode;
++ int err;
++
++ branch = &parent->nbranch[iip];
++ pnode = branch->pnode;
++ if (pnode)
++ return pnode;
++ err = read_pnode(c, parent, iip);
++ if (err)
++ return ERR_PTR(err);
++ update_cats(c, branch->pnode);
++ return branch->pnode;
++}
++
++/**
++ * ubifs_lpt_lookup - lookup LEB properties in the LPT.
++ * @c: UBIFS file-system description object
++ * @lnum: LEB number to lookup
++ *
++ * This function returns a pointer to the LEB properties on success or a
++ * negative error code on failure.
++ */
++struct ubifs_lprops *ubifs_lpt_lookup(struct ubifs_info *c, int lnum)
++{
++ int err, i, h, iip, shft;
++ struct ubifs_nnode *nnode;
++ struct ubifs_pnode *pnode;
++
++ if (!c->nroot) {
++ err = ubifs_read_nnode(c, NULL, 0);
++ if (err)
++ return ERR_PTR(err);
++ }
++ nnode = c->nroot;
++ i = lnum - c->main_first;
++ shft = c->lpt_hght * UBIFS_LPT_FANOUT_SHIFT;
++ for (h = 1; h < c->lpt_hght; h++) {
++ iip = ((i >> shft) & (UBIFS_LPT_FANOUT - 1));
++ shft -= UBIFS_LPT_FANOUT_SHIFT;
++ nnode = ubifs_get_nnode(c, nnode, iip);
++ if (IS_ERR(nnode))
++ return ERR_PTR(PTR_ERR(nnode));
++ }
++ iip = ((i >> shft) & (UBIFS_LPT_FANOUT - 1));
++ shft -= UBIFS_LPT_FANOUT_SHIFT;
++ pnode = ubifs_get_pnode(c, nnode, iip);
++ if (IS_ERR(pnode))
++ return ERR_PTR(PTR_ERR(pnode));
++ iip = (i & (UBIFS_LPT_FANOUT - 1));
++ dbg_lp("LEB %d, free %d, dirty %d, flags %d", lnum,
++ pnode->lprops[iip].free, pnode->lprops[iip].dirty,
++ pnode->lprops[iip].flags);
++ return &pnode->lprops[iip];
++}
++
++/**
++ * dirty_cow_nnode - ensure a nnode is not being committed.
++ * @c: UBIFS file-system description object
++ * @nnode: nnode to check
++ *
++ * Returns dirtied nnode on success or negative error code on failure.
++ */
++static struct ubifs_nnode *dirty_cow_nnode(struct ubifs_info *c,
++ struct ubifs_nnode *nnode)
++{
++ struct ubifs_nnode *n;
++ int i;
++
++ if (!test_bit(COW_CNODE, &nnode->flags)) {
++ /* nnode is not being committed */
++ if (!test_and_set_bit(DIRTY_CNODE, &nnode->flags)) {
++ c->dirty_nn_cnt += 1;
++ ubifs_add_nnode_dirt(c, nnode);
++ }
++ return nnode;
++ }
++
++ /* nnode is being committed, so copy it */
++ n = kmalloc(sizeof(struct ubifs_nnode), GFP_NOFS);
++ if (unlikely(!n))
++ return ERR_PTR(-ENOMEM);
++
++ memcpy(n, nnode, sizeof(struct ubifs_nnode));
++ n->cnext = NULL;
++ __set_bit(DIRTY_CNODE, &n->flags);
++ __clear_bit(COW_CNODE, &n->flags);
++
++ /* The children now have new parent */
++ for (i = 0; i < UBIFS_LPT_FANOUT; i++) {
++ struct ubifs_nbranch *branch = &n->nbranch[i];
++
++ if (branch->cnode)
++ branch->cnode->parent = n;
++ }
++
++ ubifs_assert(!test_bit(OBSOLETE_CNODE, &nnode->flags));
++ __set_bit(OBSOLETE_CNODE, &nnode->flags);
++
++ c->dirty_nn_cnt += 1;
++ ubifs_add_nnode_dirt(c, nnode);
++ if (nnode->parent)
++ nnode->parent->nbranch[n->iip].nnode = n;
++ else
++ c->nroot = n;
++ return n;
++}
++
++/**
++ * dirty_cow_pnode - ensure a pnode is not being committed.
++ * @c: UBIFS file-system description object
++ * @pnode: pnode to check
++ *
++ * Returns dirtied pnode on success or negative error code on failure.
++ */
++static struct ubifs_pnode *dirty_cow_pnode(struct ubifs_info *c,
++ struct ubifs_pnode *pnode)
++{
++ struct ubifs_pnode *p;
++
++ if (!test_bit(COW_CNODE, &pnode->flags)) {
++ /* pnode is not being committed */
++ if (!test_and_set_bit(DIRTY_CNODE, &pnode->flags)) {
++ c->dirty_pn_cnt += 1;
++ add_pnode_dirt(c, pnode);
++ }
++ return pnode;
++ }
++
++ /* pnode is being committed, so copy it */
++ p = kmalloc(sizeof(struct ubifs_pnode), GFP_NOFS);
++ if (unlikely(!p))
++ return ERR_PTR(-ENOMEM);
++
++ memcpy(p, pnode, sizeof(struct ubifs_pnode));
++ p->cnext = NULL;
++ __set_bit(DIRTY_CNODE, &p->flags);
++ __clear_bit(COW_CNODE, &p->flags);
++ replace_cats(c, pnode, p);
++
++ ubifs_assert(!test_bit(OBSOLETE_CNODE, &pnode->flags));
++ __set_bit(OBSOLETE_CNODE, &pnode->flags);
++
++ c->dirty_pn_cnt += 1;
++ add_pnode_dirt(c, pnode);
++ pnode->parent->nbranch[p->iip].pnode = p;
++ return p;
++}
++
++/**
++ * ubifs_lpt_lookup_dirty - lookup LEB properties in the LPT.
++ * @c: UBIFS file-system description object
++ * @lnum: LEB number to lookup
++ *
++ * This function returns a pointer to the LEB properties on success or a
++ * negative error code on failure.
++ */
++struct ubifs_lprops *ubifs_lpt_lookup_dirty(struct ubifs_info *c, int lnum)
++{
++ int err, i, h, iip, shft;
++ struct ubifs_nnode *nnode;
++ struct ubifs_pnode *pnode;
++
++ if (!c->nroot) {
++ err = ubifs_read_nnode(c, NULL, 0);
++ if (err)
++ return ERR_PTR(err);
++ }
++ nnode = c->nroot;
++ nnode = dirty_cow_nnode(c, nnode);
++ if (IS_ERR(nnode))
++ return ERR_PTR(PTR_ERR(nnode));
++ i = lnum - c->main_first;
++ shft = c->lpt_hght * UBIFS_LPT_FANOUT_SHIFT;
++ for (h = 1; h < c->lpt_hght; h++) {
++ iip = ((i >> shft) & (UBIFS_LPT_FANOUT - 1));
++ shft -= UBIFS_LPT_FANOUT_SHIFT;
++ nnode = ubifs_get_nnode(c, nnode, iip);
++ if (IS_ERR(nnode))
++ return ERR_PTR(PTR_ERR(nnode));
++ nnode = dirty_cow_nnode(c, nnode);
++ if (IS_ERR(nnode))
++ return ERR_PTR(PTR_ERR(nnode));
++ }
++ iip = ((i >> shft) & (UBIFS_LPT_FANOUT - 1));
++ shft -= UBIFS_LPT_FANOUT_SHIFT;
++ pnode = ubifs_get_pnode(c, nnode, iip);
++ if (IS_ERR(pnode))
++ return ERR_PTR(PTR_ERR(pnode));
++ pnode = dirty_cow_pnode(c, pnode);
++ if (IS_ERR(pnode))
++ return ERR_PTR(PTR_ERR(pnode));
++ iip = (i & (UBIFS_LPT_FANOUT - 1));
++ dbg_lp("LEB %d, free %d, dirty %d, flags %d", lnum,
++ pnode->lprops[iip].free, pnode->lprops[iip].dirty,
++ pnode->lprops[iip].flags);
++ ubifs_assert(test_bit(DIRTY_CNODE, &pnode->flags));
++ return &pnode->lprops[iip];
++}
++
++/**
++ * lpt_init_rd - initialize the LPT for reading.
++ * @c: UBIFS file-system description object
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++static int lpt_init_rd(struct ubifs_info *c)
++{
++ int err, i;
++
++ c->ltab = vmalloc(sizeof(struct ubifs_lpt_lprops) * c->lpt_lebs);
++ if (!c->ltab)
++ return -ENOMEM;
++
++ i = max_t(int, c->nnode_sz, c->pnode_sz);
++ c->lpt_nod_buf = kmalloc(i, GFP_KERNEL);
++ if (!c->lpt_nod_buf)
++ return -ENOMEM;
++
++ for (i = 0; i < LPROPS_HEAP_CNT; i++) {
++ c->lpt_heap[i].arr = kmalloc(sizeof(void *) * LPT_HEAP_SZ,
++ GFP_KERNEL);
++ if (!c->lpt_heap[i].arr)
++ return -ENOMEM;
++ c->lpt_heap[i].cnt = 0;
++ c->lpt_heap[i].max_cnt = LPT_HEAP_SZ;
++ }
++
++ c->dirty_idx.arr = kmalloc(sizeof(void *) * LPT_HEAP_SZ, GFP_KERNEL);
++ if (!c->dirty_idx.arr)
++ return -ENOMEM;
++ c->dirty_idx.cnt = 0;
++ c->dirty_idx.max_cnt = LPT_HEAP_SZ;
++
++ err = read_ltab(c);
++ if (err)
++ return err;
++
++ dbg_lp("space_bits %d", c->space_bits);
++ dbg_lp("lpt_lnum_bits %d", c->lpt_lnum_bits);
++ dbg_lp("lpt_offs_bits %d", c->lpt_offs_bits);
++ dbg_lp("lpt_spc_bits %d", c->lpt_spc_bits);
++ dbg_lp("pcnt_bits %d", c->pcnt_bits);
++ dbg_lp("lnum_bits %d", c->lnum_bits);
++ dbg_lp("pnode_sz %d", c->pnode_sz);
++ dbg_lp("nnode_sz %d", c->nnode_sz);
++ dbg_lp("ltab_sz %d", c->ltab_sz);
++ dbg_lp("lsave_sz %d", c->lsave_sz);
++ dbg_lp("lsave_cnt %d", c->lsave_cnt);
++ dbg_lp("lpt_hght %d", c->lpt_hght);
++ dbg_lp("big_lpt %d", c->big_lpt);
++ dbg_lp("LPT root is at %d:%d", c->lpt_lnum, c->lpt_offs);
++ dbg_lp("LPT head is at %d:%d", c->nhead_lnum, c->nhead_offs);
++ dbg_lp("LPT ltab is at %d:%d", c->ltab_lnum, c->ltab_offs);
++ if (c->big_lpt)
++ dbg_lp("LPT lsave is at %d:%d", c->lsave_lnum, c->lsave_offs);
++
++ return 0;
++}
++
++/**
++ * lpt_init_wr - initialize the LPT for writing.
++ * @c: UBIFS file-system description object
++ *
++ * 'lpt_init_rd()' must have been called already.
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++static int lpt_init_wr(struct ubifs_info *c)
++{
++ int err, i;
++
++ c->ltab_cmt = vmalloc(sizeof(struct ubifs_lpt_lprops) * c->lpt_lebs);
++ if (!c->ltab_cmt)
++ return -ENOMEM;
++
++ c->lpt_buf = vmalloc(c->leb_size);
++ if (!c->lpt_buf)
++ return -ENOMEM;
++
++ if (c->big_lpt) {
++ c->lsave = kmalloc(sizeof(int) * c->lsave_cnt, GFP_NOFS);
++ if (!c->lsave)
++ return -ENOMEM;
++ err = read_lsave(c);
++ if (err)
++ return err;
++ }
++
++ for (i = 0; i < c->lpt_lebs; i++)
++ if (c->ltab[i].free == c->leb_size) {
++ err = ubifs_leb_unmap(c, i + c->lpt_first);
++ if (err)
++ return err;
++ }
++
++ return 0;
++}
++
++/**
++ * ubifs_lpt_init - initialize the LPT.
++ * @c: UBIFS file-system description object
++ * @rd: whether to initialize lpt for reading
++ * @wr: whether to initialize lpt for writing
++ *
++ * For mounting 'rw', @rd and @wr are both true. For mounting 'ro', @rd is true
++ * and @wr is false. For mounting from 'ro' to 'rw', @rd is false and @wr is
++ * true.
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++int ubifs_lpt_init(struct ubifs_info *c, int rd, int wr)
++{
++ int err;
++
++ if (rd) {
++ err = lpt_init_rd(c);
++ if (err)
++ return err;
++ }
++
++ if (wr) {
++ err = lpt_init_wr(c);
++ if (err)
++ return err;
++ }
++
++ return 0;
++}
++
++/**
++ * struct lpt_scan_node - somewhere to put nodes while we scan LPT.
++ * @nnode: where to keep a nnode
++ * @pnode: where to keep a pnode
++ * @cnode: where to keep a cnode
++ * @in_tree: is the node in the tree in memory
++ * @ptr.nnode: pointer to the nnode (if it is an nnode) which may be here or in
++ * the tree
++ * @ptr.pnode: ditto for pnode
++ * @ptr.cnode: ditto for cnode
++ */
++struct lpt_scan_node {
++ union {
++ struct ubifs_nnode nnode;
++ struct ubifs_pnode pnode;
++ struct ubifs_cnode cnode;
++ };
++ int in_tree;
++ union {
++ struct ubifs_nnode *nnode;
++ struct ubifs_pnode *pnode;
++ struct ubifs_cnode *cnode;
++ } ptr;
++};
++
++/**
++ * scan_get_nnode - for the scan, get a nnode from either the tree or flash.
++ * @c: the UBIFS file-system description object
++ * @path: where to put the nnode
++ * @parent: parent of the nnode
++ * @iip: index in parent of the nnode
++ *
++ * This function returns a pointer to the nnode on success or a negative error
++ * code on failure.
++ */
++static struct ubifs_nnode *scan_get_nnode(struct ubifs_info *c,
++ struct lpt_scan_node *path,
++ struct ubifs_nnode *parent, int iip)
++{
++ struct ubifs_nbranch *branch;
++ struct ubifs_nnode *nnode;
++ void *buf = c->lpt_nod_buf;
++ int err;
++
++ branch = &parent->nbranch[iip];
++ nnode = branch->nnode;
++ if (nnode) {
++ path->in_tree = 1;
++ path->ptr.nnode = nnode;
++ return nnode;
++ }
++ nnode = &path->nnode;
++ path->in_tree = 0;
++ path->ptr.nnode = nnode;
++ memset(nnode, 0, sizeof(struct ubifs_nnode));
++ if (branch->lnum == 0) {
++ /*
++ * This nnode was not written which just means that the LEB
++ * properties in the subtree below it describe empty LEBs. We
++ * make the nnode as though we had read it, which in fact means
++ * doing almost nothing.
++ */
++ if (c->big_lpt)
++ nnode->num = calc_nnode_num_from_parent(c, parent, iip);
++ } else {
++ err = ubi_read(c->ubi, branch->lnum, buf, branch->offs,
++ c->nnode_sz);
++ if (err)
++ return ERR_PTR(err);
++ err = unpack_nnode(c, buf, nnode);
++ if (err)
++ return ERR_PTR(err);
++ }
++ err = validate_nnode(c, nnode, parent, iip);
++ if (err)
++ return ERR_PTR(err);
++ if (!c->big_lpt)
++ nnode->num = calc_nnode_num_from_parent(c, parent, iip);
++ nnode->level = parent->level - 1;
++ nnode->parent = parent;
++ nnode->iip = iip;
++ return nnode;
++}
++
++/**
++ * scan_get_pnode - for the scan, get a pnode from either the tree or flash.
++ * @c: the UBIFS file-system description object
++ * @path: where to put the pnode
++ * @parent: parent of the pnode
++ * @iip: index in parent of the pnode
++ *
++ * This function returns a pointer to the pnode on success or a negative error
++ * code on failure.
++ */
++static struct ubifs_pnode *scan_get_pnode(struct ubifs_info *c,
++ struct lpt_scan_node *path,
++ struct ubifs_nnode *parent, int iip)
++{
++ struct ubifs_nbranch *branch;
++ struct ubifs_pnode *pnode;
++ void *buf = c->lpt_nod_buf;
++ int err;
++
++ branch = &parent->nbranch[iip];
++ pnode = branch->pnode;
++ if (pnode) {
++ path->in_tree = 1;
++ path->ptr.pnode = pnode;
++ return pnode;
++ }
++ pnode = &path->pnode;
++ path->in_tree = 0;
++ path->ptr.pnode = pnode;
++ memset(pnode, 0, sizeof(struct ubifs_pnode));
++ if (branch->lnum == 0) {
++ /*
++ * This pnode was not written which just means that the LEB
++ * properties in it describe empty LEBs. We make the pnode as
++ * though we had read it.
++ */
++ int i;
++
++ if (c->big_lpt)
++ pnode->num = calc_pnode_num_from_parent(c, parent, iip);
++ for (i = 0; i < UBIFS_LPT_FANOUT; i++) {
++ struct ubifs_lprops * const lprops = &pnode->lprops[i];
++
++ lprops->free = c->leb_size;
++ lprops->flags = ubifs_categorize_lprops(c, lprops);
++ }
++ } else {
++ ubifs_assert(branch->lnum >= c->lpt_first &&
++ branch->lnum <= c->lpt_last);
++ ubifs_assert(branch->offs >= 0 && branch->offs < c->leb_size);
++ err = ubi_read(c->ubi, branch->lnum, buf, branch->offs,
++ c->pnode_sz);
++ if (err)
++ return ERR_PTR(err);
++ err = unpack_pnode(c, buf, pnode);
++ if (err)
++ return ERR_PTR(err);
++ }
++ err = validate_pnode(c, pnode, parent, iip);
++ if (err)
++ return ERR_PTR(err);
++ if (!c->big_lpt)
++ pnode->num = calc_pnode_num_from_parent(c, parent, iip);
++ pnode->parent = parent;
++ pnode->iip = iip;
++ set_pnode_lnum(c, pnode);
++ return pnode;
++}
++
++/**
++ * ubifs_lpt_scan_nolock - scan the LPT.
++ * @c: the UBIFS file-system description object
++ * @start_lnum: LEB number from which to start scanning
++ * @end_lnum: LEB number at which to stop scanning
++ * @scan_cb: callback function called for each lprops
++ * @data: data to be passed to the callback function
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++int ubifs_lpt_scan_nolock(struct ubifs_info *c, int start_lnum, int end_lnum,
++ ubifs_lpt_scan_callback scan_cb, void *data)
++{
++ int err = 0, i, h, iip, shft;
++ struct ubifs_nnode *nnode;
++ struct ubifs_pnode *pnode;
++ struct lpt_scan_node *path;
++
++ if (start_lnum == -1) {
++ start_lnum = end_lnum + 1;
++ if (start_lnum >= c->leb_cnt)
++ start_lnum = c->main_first;
++ }
++
++ ubifs_assert(start_lnum >= c->main_first && start_lnum < c->leb_cnt);
++ ubifs_assert(end_lnum >= c->main_first && end_lnum < c->leb_cnt);
++
++ if (!c->nroot) {
++ err = ubifs_read_nnode(c, NULL, 0);
++ if (err)
++ return err;
++ }
++
++ path = kmalloc(sizeof(struct lpt_scan_node) * (c->lpt_hght + 1),
++ GFP_NOFS);
++ if (!path)
++ return -ENOMEM;
++
++ path[0].ptr.nnode = c->nroot;
++ path[0].in_tree = 1;
++again:
++ /* Descend to the pnode containing start_lnum */
++ nnode = c->nroot;
++ i = start_lnum - c->main_first;
++ shft = c->lpt_hght * UBIFS_LPT_FANOUT_SHIFT;
++ for (h = 1; h < c->lpt_hght; h++) {
++ iip = ((i >> shft) & (UBIFS_LPT_FANOUT - 1));
++ shft -= UBIFS_LPT_FANOUT_SHIFT;
++ nnode = scan_get_nnode(c, path + h, nnode, iip);
++ if (IS_ERR(nnode)) {
++ err = PTR_ERR(nnode);
++ goto out;
++ }
++ }
++ iip = ((i >> shft) & (UBIFS_LPT_FANOUT - 1));
++ shft -= UBIFS_LPT_FANOUT_SHIFT;
++ pnode = scan_get_pnode(c, path + h, nnode, iip);
++ if (IS_ERR(pnode)) {
++ err = PTR_ERR(pnode);
++ goto out;
++ }
++ iip = (i & (UBIFS_LPT_FANOUT - 1));
++
++ /* Loop for each lprops */
++ while (1) {
++ struct ubifs_lprops *lprops = &pnode->lprops[iip];
++ int ret, lnum = lprops->lnum;
++
++ ret = scan_cb(c, lprops, path[h].in_tree, data);
++ if (ret < 0) {
++ err = ret;
++ goto out;
++ }
++ if (ret & LPT_SCAN_ADD) {
++ /* Add all the nodes in path to the tree in memory */
++ for (h = 1; h < c->lpt_hght; h++) {
++ const size_t sz = sizeof(struct ubifs_nnode);
++ struct ubifs_nnode *parent;
++
++ if (path[h].in_tree)
++ continue;
++ nnode = kmalloc(sz, GFP_NOFS);
++ if (!nnode) {
++ err = -ENOMEM;
++ goto out;
++ }
++ memcpy(nnode, &path[h].nnode, sz);
++ parent = nnode->parent;
++ parent->nbranch[nnode->iip].nnode = nnode;
++ path[h].ptr.nnode = nnode;
++ path[h].in_tree = 1;
++ path[h + 1].cnode.parent = nnode;
++ }
++ if (path[h].in_tree)
++ ubifs_ensure_cat(c, lprops);
++ else {
++ const size_t sz = sizeof(struct ubifs_pnode);
++ struct ubifs_nnode *parent;
++
++ pnode = kmalloc(sz, GFP_NOFS);
++ if (!pnode) {
++ err = -ENOMEM;
++ goto out;
++ }
++ memcpy(pnode, &path[h].pnode, sz);
++ parent = pnode->parent;
++ parent->nbranch[pnode->iip].pnode = pnode;
++ path[h].ptr.pnode = pnode;
++ path[h].in_tree = 1;
++ update_cats(c, pnode);
++ c->pnodes_have += 1;
++ }
++ err = dbg_check_lpt_nodes(c, (struct ubifs_cnode *)
++ c->nroot, 0, 0);
++ if (err)
++ goto out;
++ err = dbg_check_cats(c);
++ if (err)
++ goto out;
++ }
++ if (ret & LPT_SCAN_STOP) {
++ err = 0;
++ break;
++ }
++ /* Get the next lprops */
++ if (lnum == end_lnum) {
++ /*
++ * We got to the end without finding what we were
++ * looking for
++ */
++ err = -ENOSPC;
++ goto out;
++ }
++ if (lnum + 1 >= c->leb_cnt) {
++ /* Wrap-around to the beginning */
++ start_lnum = c->main_first;
++ goto again;
++ }
++ if (iip + 1 < UBIFS_LPT_FANOUT) {
++ /* Next lprops is in the same pnode */
++ iip += 1;
++ continue;
++ }
++ /* We need to get the next pnode. Go up until we can go right */
++ iip = pnode->iip;
++ while (1) {
++ h -= 1;
++ ubifs_assert(h >= 0);
++ nnode = path[h].ptr.nnode;
++ if (iip + 1 < UBIFS_LPT_FANOUT)
++ break;
++ iip = nnode->iip;
++ }
++ /* Go right */
++ iip += 1;
++ /* Descend to the pnode */
++ h += 1;
++ for (; h < c->lpt_hght; h++) {
++ nnode = scan_get_nnode(c, path + h, nnode, iip);
++ if (IS_ERR(nnode)) {
++ err = PTR_ERR(nnode);
++ goto out;
++ }
++ iip = 0;
++ }
++ pnode = scan_get_pnode(c, path + h, nnode, iip);
++ if (IS_ERR(pnode)) {
++ err = PTR_ERR(pnode);
++ goto out;
++ }
++ iip = 0;
++ }
++out:
++ kfree(path);
++ return err;
++}
++
++#ifdef CONFIG_UBIFS_FS_DEBUG
++
++/**
++ * dbg_chk_pnode - check a pnode.
++ * @c: the UBIFS file-system description object
++ * @pnode: pnode to check
++ * @col: pnode column
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++static int dbg_chk_pnode(struct ubifs_info *c, struct ubifs_pnode *pnode,
++ int col)
++{
++ int i;
++
++ if (pnode->num != col) {
++ dbg_err("pnode num %d expected %d parent num %d iip %d",
++ pnode->num, col, pnode->parent->num, pnode->iip);
++ return -EINVAL;
++ }
++ for (i = 0; i < UBIFS_LPT_FANOUT; i++) {
++ struct ubifs_lprops *lp, *lprops = &pnode->lprops[i];
++ int lnum = (pnode->num << UBIFS_LPT_FANOUT_SHIFT) + i +
++ c->main_first;
++ int found, cat = lprops->flags & LPROPS_CAT_MASK;
++ struct ubifs_lpt_heap *heap;
++ struct list_head *list = NULL;
++
++ if (lnum >= c->leb_cnt)
++ continue;
++ if (lprops->lnum != lnum) {
++ dbg_err("bad LEB number %d expected %d",
++ lprops->lnum, lnum);
++ return -EINVAL;
++ }
++ if (lprops->flags & LPROPS_TAKEN) {
++ if (cat != LPROPS_UNCAT) {
++ dbg_err("LEB %d taken but not uncat %d",
++ lprops->lnum, cat);
++ return -EINVAL;
++ }
++ continue;
++ }
++ if (lprops->flags & LPROPS_INDEX) {
++ switch (cat) {
++ case LPROPS_UNCAT:
++ case LPROPS_DIRTY_IDX:
++ case LPROPS_FRDI_IDX:
++ break;
++ default:
++ dbg_err("LEB %d index but cat %d",
++ lprops->lnum, cat);
++ return -EINVAL;
++ }
++ } else {
++ switch (cat) {
++ case LPROPS_UNCAT:
++ case LPROPS_DIRTY:
++ case LPROPS_FREE:
++ case LPROPS_EMPTY:
++ case LPROPS_FREEABLE:
++ break;
++ default:
++ dbg_err("LEB %d not index but cat %d",
++ lprops->lnum, cat);
++ return -EINVAL;
++ }
++ }
++ switch (cat) {
++ case LPROPS_UNCAT:
++ list = &c->uncat_list;
++ break;
++ case LPROPS_EMPTY:
++ list = &c->empty_list;
++ break;
++ case LPROPS_FREEABLE:
++ list = &c->freeable_list;
++ break;
++ case LPROPS_FRDI_IDX:
++ list = &c->frdi_idx_list;
++ break;
++ }
++ found = 0;
++ switch (cat) {
++ case LPROPS_DIRTY:
++ case LPROPS_DIRTY_IDX:
++ case LPROPS_FREE:
++ heap = &c->lpt_heap[cat - 1];
++ if (lprops->hpos < heap->cnt &&
++ heap->arr[lprops->hpos] == lprops)
++ found = 1;
++ break;
++ case LPROPS_UNCAT:
++ case LPROPS_EMPTY:
++ case LPROPS_FREEABLE:
++ case LPROPS_FRDI_IDX:
++ list_for_each_entry(lp, list, list)
++ if (lprops == lp) {
++ found = 1;
++ break;
++ }
++ break;
++ }
++ if (!found) {
++ dbg_err("LEB %d cat %d not found in cat heap/list",
++ lprops->lnum, cat);
++ return -EINVAL;
++ }
++ switch (cat) {
++ case LPROPS_EMPTY:
++ if (lprops->free != c->leb_size) {
++ dbg_err("LEB %d cat %d free %d dirty %d",
++ lprops->lnum, cat, lprops->free,
++ lprops->dirty);
++ return -EINVAL;
++ }
++ case LPROPS_FREEABLE:
++ case LPROPS_FRDI_IDX:
++ if (lprops->free + lprops->dirty != c->leb_size) {
++ dbg_err("LEB %d cat %d free %d dirty %d",
++ lprops->lnum, cat, lprops->free,
++ lprops->dirty);
++ return -EINVAL;
++ }
++ }
++ }
++ return 0;
++}
++
++/**
++ * dbg_check_lpt_nodes - check nnodes and pnodes.
++ * @c: the UBIFS file-system description object
++ * @cnode: next cnode (nnode or pnode) to check
++ * @row: row of cnode (root is zero)
++ * @col: column of cnode (leftmost is zero)
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++int dbg_check_lpt_nodes(struct ubifs_info *c, struct ubifs_cnode *cnode,
++ int row, int col)
++{
++ struct ubifs_nnode *nnode, *nn;
++ struct ubifs_cnode *cn;
++ int num, iip = 0, err;
++
++ if (!(ubifs_chk_flags & UBIFS_CHK_LPROPS))
++ return 0;
++
++ while (cnode) {
++ ubifs_assert(row >= 0);
++ nnode = cnode->parent;
++ if (cnode->level) {
++ /* cnode is a nnode */
++ num = calc_nnode_num(row, col);
++ if (cnode->num != num) {
++ dbg_err("nnode num %d expected %d "
++ "parent num %d iip %d", cnode->num, num,
++ (nnode ? nnode->num : 0), cnode->iip);
++ return -EINVAL;
++ }
++ nn = (struct ubifs_nnode *)cnode;
++ while (iip < UBIFS_LPT_FANOUT) {
++ cn = nn->nbranch[iip].cnode;
++ if (cn) {
++ /* Go down */
++ row += 1;
++ col <<= UBIFS_LPT_FANOUT_SHIFT;
++ col += iip;
++ iip = 0;
++ cnode = cn;
++ break;
++ }
++ /* Go right */
++ iip += 1;
++ }
++ if (iip < UBIFS_LPT_FANOUT)
++ continue;
++ } else {
++ struct ubifs_pnode *pnode;
++
++ /* cnode is a pnode */
++ pnode = (struct ubifs_pnode *)cnode;
++ err = dbg_chk_pnode(c, pnode, col);
++ if (err)
++ return err;
++ }
++ /* Go up and to the right */
++ row -= 1;
++ col >>= UBIFS_LPT_FANOUT_SHIFT;
++ iip = cnode->iip + 1;
++ cnode = (struct ubifs_cnode *)nnode;
++ }
++ return 0;
++}
++
++#endif /* CONFIG_UBIFS_FS_DEBUG */
+diff --exclude=.git -urN linux-2.6.25.6/fs/ubifs/lpt_commit.c avr32-2.6/fs/ubifs/lpt_commit.c
+--- linux-2.6.25.6/fs/ubifs/lpt_commit.c 1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/fs/ubifs/lpt_commit.c 2008-06-12 15:09:45.475816115 +0200
+@@ -0,0 +1,1631 @@
++/*
++ * This file is part of UBIFS.
++ *
++ * Copyright (C) 2006-2008 Nokia Corporation.
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published by
++ * the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but WITHOUT
++ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
++ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
++ * more details.
++ *
++ * You should have received a copy of the GNU General Public License along with
++ * this program; if not, write to the Free Software Foundation, Inc., 51
++ * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
++ *
++ * Authors: Adrian Hunter
++ * Artem Bityutskiy (Битюцкий Артём)
++ */
++
++/*
++ * This file implements commit-related functionality of the LEB properties
++ * subsystem.
++ */
++
++#include <linux/crc16.h>
++#include "ubifs.h"
++
++/**
++ * first_dirty_cnode - find first dirty cnode.
++ * @c: UBIFS file-system description object
++ * @nnode: nnode at which to start
++ *
++ * This function returns the first dirty cnode or %NULL if there is not one.
++ */
++static struct ubifs_cnode *first_dirty_cnode(struct ubifs_nnode *nnode)
++{
++ ubifs_assert(nnode);
++ while (1) {
++ int i, cont = 0;
++
++ for (i = 0; i < UBIFS_LPT_FANOUT; i++) {
++ struct ubifs_cnode *cnode;
++
++ cnode = nnode->nbranch[i].cnode;
++ if (cnode &&
++ test_bit(DIRTY_CNODE, &cnode->flags)) {
++ if (cnode->level == 0)
++ return cnode;
++ nnode = (struct ubifs_nnode *)cnode;
++ cont = 1;
++ break;
++ }
++ }
++ if (!cont)
++ return (struct ubifs_cnode *)nnode;
++ }
++}
++
++/**
++ * next_dirty_cnode - find next dirty cnode.
++ * @cnode: cnode from which to begin searching
++ *
++ * This function returns the next dirty cnode or %NULL if there is not one.
++ */
++static struct ubifs_cnode *next_dirty_cnode(struct ubifs_cnode *cnode)
++{
++ struct ubifs_nnode *nnode;
++ int i;
++
++ ubifs_assert(cnode);
++ nnode = cnode->parent;
++ if (!nnode)
++ return NULL;
++ for (i = cnode->iip + 1; i < UBIFS_LPT_FANOUT; i++) {
++ cnode = nnode->nbranch[i].cnode;
++ if (cnode && test_bit(DIRTY_CNODE, &cnode->flags)) {
++ if (cnode->level == 0)
++ return cnode; /* cnode is a pnode */
++ /* cnode is a nnode */
++ return first_dirty_cnode((struct ubifs_nnode *)cnode);
++ }
++ }
++ return (struct ubifs_cnode *)nnode;
++}
++
++/**
++ * get_cnodes_to_commit - create list of dirty cnodes to commit.
++ * @c: UBIFS file-system description object
++ *
++ * This function returns the number of cnodes to commit.
++ */
++static int get_cnodes_to_commit(struct ubifs_info *c)
++{
++ struct ubifs_cnode *cnode, *cnext;
++ int cnt = 0;
++
++ if (!c->nroot)
++ return 0;
++
++ if (!test_bit(DIRTY_CNODE, &c->nroot->flags))
++ return 0;
++
++ c->lpt_cnext = first_dirty_cnode(c->nroot);
++ cnode = c->lpt_cnext;
++ if (!cnode)
++ return 0;
++ cnt += 1;
++ while (1) {
++ ubifs_assert(!test_bit(COW_ZNODE, &cnode->flags));
++ __set_bit(COW_ZNODE, &cnode->flags);
++ cnext = next_dirty_cnode(cnode);
++ if (!cnext) {
++ cnode->cnext = c->lpt_cnext;
++ break;
++ }
++ cnode->cnext = cnext;
++ cnode = cnext;
++ cnt += 1;
++ }
++ dbg_cmt("committing %d cnodes", cnt);
++ dbg_lp("committing %d cnodes", cnt);
++ ubifs_assert(cnt == c->dirty_nn_cnt + c->dirty_pn_cnt);
++ return cnt;
++}
++
++/**
++ * upd_ltab - update LPT LEB properties.
++ * @c: UBIFS file-system description object
++ * @lnum: LEB number
++ * @free: amount of free space
++ * @dirty: amount of dirty space to add
++ */
++static void upd_ltab(struct ubifs_info *c, int lnum, int free, int dirty)
++{
++ dbg_lp("LEB %d free %d dirty %d to %d +%d",
++ lnum, c->ltab[lnum - c->lpt_first].free,
++ c->ltab[lnum - c->lpt_first].dirty, free, dirty);
++ ubifs_assert(lnum >= c->lpt_first && lnum <= c->lpt_last);
++ c->ltab[lnum - c->lpt_first].free = free;
++ c->ltab[lnum - c->lpt_first].dirty += dirty;
++}
++
++/**
++ * alloc_lpt_leb - allocate an LPT LEB that is empty.
++ * @c: UBIFS file-system description object
++ * @lnum: LEB number is passed and returned here
++ *
++ * This function finds the next empty LEB in the ltab starting from @lnum. If a
++ * an empty LEB is found it is returned in @lnum and the function returns %0.
++ * Otherwise the function returns -ENOSPC. Note however, that LPT is designed
++ * never to run out of space.
++ */
++static int alloc_lpt_leb(struct ubifs_info *c, int *lnum)
++{
++ int i, n;
++
++ n = *lnum - c->lpt_first + 1;
++ for (i = n; i < c->lpt_lebs; i++) {
++ if (c->ltab[i].tgc || c->ltab[i].cmt)
++ continue;
++ if (c->ltab[i].free == c->leb_size) {
++ c->ltab[i].cmt = 1;
++ *lnum = i + c->lpt_first;
++ return 0;
++ }
++ }
++
++ for (i = 0; i < n; i++) {
++ if (c->ltab[i].tgc || c->ltab[i].cmt)
++ continue;
++ if (c->ltab[i].free == c->leb_size) {
++ c->ltab[i].cmt = 1;
++ *lnum = i + c->lpt_first;
++ return 0;
++ }
++ }
++ dbg_err("last LEB %d", *lnum);
++ dump_stack();
++ return -ENOSPC;
++}
++
++/**
++ * layout_cnodes - layout cnodes for commit.
++ * @c: UBIFS file-system description object
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++static int layout_cnodes(struct ubifs_info *c)
++{
++ int lnum, offs, len, alen, done_lsave, done_ltab, err;
++ struct ubifs_cnode *cnode;
++
++ cnode = c->lpt_cnext;
++ if (!cnode)
++ return 0;
++ lnum = c->nhead_lnum;
++ offs = c->nhead_offs;
++ /* Try to place lsave and ltab nicely */
++ done_lsave = !c->big_lpt;
++ done_ltab = 0;
++ if (!done_lsave && offs + c->lsave_sz <= c->leb_size) {
++ done_lsave = 1;
++ c->lsave_lnum = lnum;
++ c->lsave_offs = offs;
++ offs += c->lsave_sz;
++ }
++
++ if (offs + c->ltab_sz <= c->leb_size) {
++ done_ltab = 1;
++ c->ltab_lnum = lnum;
++ c->ltab_offs = offs;
++ offs += c->ltab_sz;
++ }
++
++ do {
++ if (cnode->level) {
++ len = c->nnode_sz;
++ c->dirty_nn_cnt -= 1;
++ } else {
++ len = c->pnode_sz;
++ c->dirty_pn_cnt -= 1;
++ }
++ while (offs + len > c->leb_size) {
++ alen = ALIGN(offs, c->min_io_size);
++ upd_ltab(c, lnum, c->leb_size - alen, alen - offs);
++ err = alloc_lpt_leb(c, &lnum);
++ if (err)
++ return err;
++ offs = 0;
++ ubifs_assert(lnum >= c->lpt_first &&
++ lnum <= c->lpt_last);
++ /* Try to place lsave and ltab nicely */
++ if (!done_lsave) {
++ done_lsave = 1;
++ c->lsave_lnum = lnum;
++ c->lsave_offs = offs;
++ offs += c->lsave_sz;
++ continue;
++ }
++ if (!done_ltab) {
++ done_ltab = 1;
++ c->ltab_lnum = lnum;
++ c->ltab_offs = offs;
++ offs += c->ltab_sz;
++ continue;
++ }
++ break;
++ }
++ if (cnode->parent) {
++ cnode->parent->nbranch[cnode->iip].lnum = lnum;
++ cnode->parent->nbranch[cnode->iip].offs = offs;
++ } else {
++ c->lpt_lnum = lnum;
++ c->lpt_offs = offs;
++ }
++ offs += len;
++ cnode = cnode->cnext;
++ } while (cnode && cnode != c->lpt_cnext);
++
++ /* Make sure to place LPT's save table */
++ if (!done_lsave) {
++ if (offs + c->lsave_sz > c->leb_size) {
++ alen = ALIGN(offs, c->min_io_size);
++ upd_ltab(c, lnum, c->leb_size - alen, alen - offs);
++ err = alloc_lpt_leb(c, &lnum);
++ if (err)
++ return err;
++ offs = 0;
++ ubifs_assert(lnum >= c->lpt_first &&
++ lnum <= c->lpt_last);
++ }
++ done_lsave = 1;
++ c->lsave_lnum = lnum;
++ c->lsave_offs = offs;
++ offs += c->lsave_sz;
++ }
++
++ /* Make sure to place LPT's own lprops table */
++ if (!done_ltab) {
++ if (offs + c->ltab_sz > c->leb_size) {
++ alen = ALIGN(offs, c->min_io_size);
++ upd_ltab(c, lnum, c->leb_size - alen, alen - offs);
++ err = alloc_lpt_leb(c, &lnum);
++ if (err)
++ return err;
++ offs = 0;
++ ubifs_assert(lnum >= c->lpt_first &&
++ lnum <= c->lpt_last);
++ }
++ done_ltab = 1;
++ c->ltab_lnum = lnum;
++ c->ltab_offs = offs;
++ offs += c->ltab_sz;
++ }
++
++ alen = ALIGN(offs, c->min_io_size);
++ upd_ltab(c, lnum, c->leb_size - alen, alen - offs);
++ return 0;
++}
++
++/**
++ * realloc_lpt_leb - allocate an LPT LEB that is empty.
++ * @c: UBIFS file-system description object
++ * @lnum: LEB number is passed and returned here
++ *
++ * This function duplicates exactly the results of the function alloc_lpt_leb.
++ * It is used during end commit to reallocate the same LEB numbers that were
++ * allocated by alloc_lpt_leb during start commit.
++ *
++ * This function finds the next LEB that was allocated by the alloc_lpt_leb
++ * function starting from @lnum. If a LEB is found it is returned in @lnum and
++ * the function returns %0. Otherwise the function returns -ENOSPC.
++ * Note however, that LPT is designed never to run out of space.
++ */
++static int realloc_lpt_leb(struct ubifs_info *c, int *lnum)
++{
++ int i, n;
++
++ n = *lnum - c->lpt_first + 1;
++ for (i = n; i < c->lpt_lebs; i++)
++ if (c->ltab[i].cmt) {
++ c->ltab[i].cmt = 0;
++ *lnum = i + c->lpt_first;
++ return 0;
++ }
++
++ for (i = 0; i < n; i++)
++ if (c->ltab[i].cmt) {
++ c->ltab[i].cmt = 0;
++ *lnum = i + c->lpt_first;
++ return 0;
++ }
++ dbg_err("last LEB %d", *lnum);
++ dump_stack();
++ return -ENOSPC;
++}
++
++/**
++ * write_cnodes - write cnodes for commit.
++ * @c: UBIFS file-system description object
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++static int write_cnodes(struct ubifs_info *c)
++{
++ int lnum, offs, len, from, err, wlen, alen, done_ltab, done_lsave;
++ struct ubifs_cnode *cnode;
++ void *buf = c->lpt_buf;
++
++ cnode = c->lpt_cnext;
++ if (!cnode)
++ return 0;
++ lnum = c->nhead_lnum;
++ offs = c->nhead_offs;
++ from = offs;
++ /* Ensure empty LEB is unmapped */
++ if (offs == 0) {
++ err = ubifs_leb_unmap(c, lnum);
++ if (err)
++ return err;
++ }
++ /* Try to place lsave and ltab nicely */
++ done_lsave = !c->big_lpt;
++ done_ltab = 0;
++ if (!done_lsave && offs + c->lsave_sz <= c->leb_size) {
++ done_lsave = 1;
++ ubifs_pack_lsave(c, buf + offs, c->lsave);
++ offs += c->lsave_sz;
++ }
++
++ if (offs + c->ltab_sz <= c->leb_size) {
++ done_ltab = 1;
++ ubifs_pack_ltab(c, buf + offs, c->ltab_cmt);
++ offs += c->ltab_sz;
++ }
++
++ /* Loop for each cnode */
++ do {
++ if (cnode->level)
++ len = c->nnode_sz;
++ else
++ len = c->pnode_sz;
++ while (offs + len > c->leb_size) {
++ wlen = offs - from;
++ if (wlen) {
++ alen = ALIGN(wlen, c->min_io_size);
++ memset(buf + offs, 0xff, alen - wlen);
++ err = ubifs_leb_write(c, lnum, buf + from, from,
++ alen, UBI_SHORTTERM);
++ if (err)
++ return err;
++ }
++ err = realloc_lpt_leb(c, &lnum);
++ if (err)
++ return err;
++ offs = 0;
++ from = 0;
++ ubifs_assert(lnum >= c->lpt_first &&
++ lnum <= c->lpt_last);
++ err = ubifs_leb_unmap(c, lnum);
++ if (err)
++ return err;
++ /* Try to place lsave and ltab nicely */
++ if (!done_lsave) {
++ done_lsave = 1;
++ ubifs_pack_lsave(c, buf + offs, c->lsave);
++ offs += c->lsave_sz;
++ continue;
++ }
++ if (!done_ltab) {
++ done_ltab = 1;
++ ubifs_pack_ltab(c, buf + offs, c->ltab_cmt);
++ offs += c->ltab_sz;
++ continue;
++ }
++ break;
++ }
++ if (cnode->level)
++ ubifs_pack_nnode(c, buf + offs,
++ (struct ubifs_nnode *)cnode);
++ else
++ ubifs_pack_pnode(c, buf + offs,
++ (struct ubifs_pnode *)cnode);
++ /*
++ * The reason for the barriers is the same as in case of TNC.
++ * See comment in 'write_index()'. 'dirty_cow_nnode()' and
++ * 'dirty_cow_pnode()' are the functions for which this is
++ * important.
++ */
++ clear_bit(DIRTY_CNODE, &cnode->flags);
++ smp_mb__before_clear_bit();
++ clear_bit(COW_ZNODE, &cnode->flags);
++ smp_mb__after_clear_bit();
++ offs += len;
++ cnode = cnode->cnext;
++ } while (cnode && cnode != c->lpt_cnext);
++
++ /* Make sure to place LPT's save table */
++ if (!done_lsave) {
++ if (offs + c->lsave_sz > c->leb_size) {
++ wlen = offs - from;
++ alen = ALIGN(wlen, c->min_io_size);
++ memset(buf + offs, 0xff, alen - wlen);
++ err = ubifs_leb_write(c, lnum, buf + from, from, alen,
++ UBI_SHORTTERM);
++ if (err)
++ return err;
++ err = realloc_lpt_leb(c, &lnum);
++ if (err)
++ return err;
++ offs = 0;
++ ubifs_assert(lnum >= c->lpt_first &&
++ lnum <= c->lpt_last);
++ err = ubifs_leb_unmap(c, lnum);
++ if (err)
++ return err;
++ }
++ done_lsave = 1;
++ ubifs_pack_lsave(c, buf + offs, c->lsave);
++ offs += c->lsave_sz;
++ }
++
++ /* Make sure to place LPT's own lprops table */
++ if (!done_ltab) {
++ if (offs + c->ltab_sz > c->leb_size) {
++ wlen = offs - from;
++ alen = ALIGN(wlen, c->min_io_size);
++ memset(buf + offs, 0xff, alen - wlen);
++ err = ubifs_leb_write(c, lnum, buf + from, from, alen,
++ UBI_SHORTTERM);
++ if (err)
++ return err;
++ err = realloc_lpt_leb(c, &lnum);
++ if (err)
++ return err;
++ offs = 0;
++ ubifs_assert(lnum >= c->lpt_first &&
++ lnum <= c->lpt_last);
++ err = ubifs_leb_unmap(c, lnum);
++ if (err)
++ return err;
++ }
++ done_ltab = 1;
++ ubifs_pack_ltab(c, buf + offs, c->ltab_cmt);
++ offs += c->ltab_sz;
++ }
++
++ /* Write remaining data in buffer */
++ wlen = offs - from;
++ alen = ALIGN(wlen, c->min_io_size);
++ memset(buf + offs, 0xff, alen - wlen);
++ err = ubifs_leb_write(c, lnum, buf + from, from, alen, UBI_SHORTTERM);
++ if (err)
++ return err;
++ c->nhead_lnum = lnum;
++ c->nhead_offs = ALIGN(offs, c->min_io_size);
++
++ dbg_lp("LPT root is at %d:%d", c->lpt_lnum, c->lpt_offs);
++ dbg_lp("LPT head is at %d:%d", c->nhead_lnum, c->nhead_offs);
++ dbg_lp("LPT ltab is at %d:%d", c->ltab_lnum, c->ltab_offs);
++ if (c->big_lpt)
++ dbg_lp("LPT lsave is at %d:%d", c->lsave_lnum, c->lsave_offs);
++ return 0;
++}
++
++/**
++ * next_pnode - find next pnode.
++ * @c: UBIFS file-system description object
++ * @pnode: pnode
++ *
++ * This function returns the next pnode or %NULL if there are no more pnodes.
++ */
++static struct ubifs_pnode *next_pnode(struct ubifs_info *c,
++ struct ubifs_pnode *pnode)
++{
++ struct ubifs_nnode *nnode;
++ int iip;
++
++ /* Try to go right */
++ nnode = pnode->parent;
++ iip = pnode->iip + 1;
++ if (iip < UBIFS_LPT_FANOUT) {
++ /* We assume here that LEB zero is never an LPT LEB */
++ if (nnode->nbranch[iip].lnum)
++ return ubifs_get_pnode(c, nnode, iip);
++ else
++ return NULL;
++ }
++
++ /* Go up while can't go right */
++ do {
++ iip = nnode->iip + 1;
++ nnode = nnode->parent;
++ if (!nnode)
++ return NULL;
++ /* We assume here that LEB zero is never an LPT LEB */
++ } while (iip >= UBIFS_LPT_FANOUT || !nnode->nbranch[iip].lnum);
++
++ /* Go right */
++ nnode = ubifs_get_nnode(c, nnode, iip);
++ if (IS_ERR(nnode))
++ return (void *)nnode;
++
++ /* Go down to level 1 */
++ while (nnode->level > 1) {
++ nnode = ubifs_get_nnode(c, nnode, 0);
++ if (IS_ERR(nnode))
++ return (void *)nnode;
++ }
++
++ return ubifs_get_pnode(c, nnode, 0);
++}
++
++/**
++ * pnode_lookup - lookup a pnode in the LPT.
++ * @c: UBIFS file-system description object
++ * @i: pnode number (0 to main_lebs - 1)
++ *
++ * This function returns a pointer to the pnode on success or a negative
++ * error code on failure.
++ */
++static struct ubifs_pnode *pnode_lookup(struct ubifs_info *c, int i)
++{
++ int err, h, iip, shft;
++ struct ubifs_nnode *nnode;
++
++ if (!c->nroot) {
++ err = ubifs_read_nnode(c, NULL, 0);
++ if (err)
++ return ERR_PTR(err);
++ }
++ i <<= UBIFS_LPT_FANOUT_SHIFT;
++ nnode = c->nroot;
++ shft = c->lpt_hght * UBIFS_LPT_FANOUT_SHIFT;
++ for (h = 1; h < c->lpt_hght; h++) {
++ iip = ((i >> shft) & (UBIFS_LPT_FANOUT - 1));
++ shft -= UBIFS_LPT_FANOUT_SHIFT;
++ nnode = ubifs_get_nnode(c, nnode, iip);
++ if (IS_ERR(nnode))
++ return ERR_PTR(PTR_ERR(nnode));
++ }
++ iip = ((i >> shft) & (UBIFS_LPT_FANOUT - 1));
++ return ubifs_get_pnode(c, nnode, iip);
++}
++
++/**
++ * add_pnode_dirt - add dirty space to LPT LEB properties.
++ * @c: UBIFS file-system description object
++ * @pnode: pnode for which to add dirt
++ */
++static void add_pnode_dirt(struct ubifs_info *c, struct ubifs_pnode *pnode)
++{
++ ubifs_add_lpt_dirt(c, pnode->parent->nbranch[pnode->iip].lnum,
++ c->pnode_sz);
++}
++
++/**
++ * do_make_pnode_dirty - mark a pnode dirty.
++ * @c: UBIFS file-system description object
++ * @pnode: pnode to mark dirty
++ */
++static void do_make_pnode_dirty(struct ubifs_info *c, struct ubifs_pnode *pnode)
++{
++ /* Assumes cnext list is empty i.e. not called during commit */
++ if (!test_and_set_bit(DIRTY_CNODE, &pnode->flags)) {
++ struct ubifs_nnode *nnode;
++
++ c->dirty_pn_cnt += 1;
++ add_pnode_dirt(c, pnode);
++ /* Mark parent and ancestors dirty too */
++ nnode = pnode->parent;
++ while (nnode) {
++ if (!test_and_set_bit(DIRTY_CNODE, &nnode->flags)) {
++ c->dirty_nn_cnt += 1;
++ ubifs_add_nnode_dirt(c, nnode);
++ nnode = nnode->parent;
++ } else
++ break;
++ }
++ }
++}
++
++/**
++ * make_tree_dirty - mark the entire LEB properties tree dirty.
++ * @c: UBIFS file-system description object
++ *
++ * This function is used by the "small" LPT model to cause the entire LEB
++ * properties tree to be written. The "small" LPT model does not use LPT
++ * garbage collection because it is more efficient to write the entire tree
++ * (because it is small).
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++static int make_tree_dirty(struct ubifs_info *c)
++{
++ struct ubifs_pnode *pnode;
++
++ pnode = pnode_lookup(c, 0);
++ while (pnode) {
++ do_make_pnode_dirty(c, pnode);
++ pnode = next_pnode(c, pnode);
++ if (IS_ERR(pnode))
++ return PTR_ERR(pnode);
++ }
++ return 0;
++}
++
++/**
++ * need_write_all - determine if the LPT area is running out of free space.
++ * @c: UBIFS file-system description object
++ *
++ * This function returns %1 if the LPT area is running out of free space and %0
++ * if it is not.
++ */
++static int need_write_all(struct ubifs_info *c)
++{
++ long long free = 0;
++ int i;
++
++ for (i = 0; i < c->lpt_lebs; i++) {
++ if (i + c->lpt_first == c->nhead_lnum)
++ free += c->leb_size - c->nhead_offs;
++ else if (c->ltab[i].free == c->leb_size)
++ free += c->leb_size;
++ else if (c->ltab[i].free + c->ltab[i].dirty == c->leb_size)
++ free += c->leb_size;
++ }
++ /* Less than twice the size left */
++ if (free <= c->lpt_sz * 2)
++ return 1;
++ return 0;
++}
++
++/**
++ * lpt_tgc_start - start trivial garbage collection of LPT LEBs.
++ * @c: UBIFS file-system description object
++ *
++ * LPT trivial garbage collection is where a LPT LEB contains only dirty and
++ * free space and so may be reused as soon as the next commit is completed.
++ * This function is called during start commit to mark LPT LEBs for trivial GC.
++ */
++static void lpt_tgc_start(struct ubifs_info *c)
++{
++ int i;
++
++ for (i = 0; i < c->lpt_lebs; i++) {
++ if (i + c->lpt_first == c->nhead_lnum)
++ continue;
++ if (c->ltab[i].dirty > 0 &&
++ c->ltab[i].free + c->ltab[i].dirty == c->leb_size) {
++ c->ltab[i].tgc = 1;
++ c->ltab[i].free = c->leb_size;
++ c->ltab[i].dirty = 0;
++ dbg_lp("LEB %d", i + c->lpt_first);
++ }
++ }
++}
++
++/**
++ * lpt_tgc_end - end trivial garbage collection of LPT LEBs.
++ * @c: UBIFS file-system description object
++ *
++ * LPT trivial garbage collection is where a LPT LEB contains only dirty and
++ * free space and so may be reused as soon as the next commit is completed.
++ * This function is called after the commit is completed (master node has been
++ * written) and unmaps LPT LEBs that were marked for trivial GC.
++ */
++static int lpt_tgc_end(struct ubifs_info *c)
++{
++ int i, err;
++
++ for (i = 0; i < c->lpt_lebs; i++)
++ if (c->ltab[i].tgc) {
++ err = ubifs_leb_unmap(c, i + c->lpt_first);
++ if (err)
++ return err;
++ c->ltab[i].tgc = 0;
++ dbg_lp("LEB %d", i + c->lpt_first);
++ }
++ return 0;
++}
++
++/**
++ * populate_lsave - fill the lsave array with important LEB numbers.
++ * @c: the UBIFS file-system description object
++ *
++ * This function is only called for the "big" model. It records a small number
++ * of LEB numbers of important LEBs. Important LEBs are ones that are (from
++ * most important to least important): empty, freeable, freeable index, dirty
++ * index, dirty or free. Upon mount, we read this list of LEB numbers and bring
++ * their pnodes into memory. That will stop us from having to scan the LPT
++ * straight away. For the "small" model we assume that scanning the LPT is no
++ * big deal.
++ */
++static void populate_lsave(struct ubifs_info *c)
++{
++ struct ubifs_lprops *lprops;
++ struct ubifs_lpt_heap *heap;
++ int i, cnt = 0;
++
++ ubifs_assert(c->big_lpt);
++ if (!(c->lpt_drty_flgs & LSAVE_DIRTY)) {
++ c->lpt_drty_flgs |= LSAVE_DIRTY;
++ ubifs_add_lpt_dirt(c, c->lsave_lnum, c->lsave_sz);
++ }
++ list_for_each_entry(lprops, &c->empty_list, list) {
++ c->lsave[cnt++] = lprops->lnum;
++ if (cnt >= c->lsave_cnt)
++ return;
++ }
++ list_for_each_entry(lprops, &c->freeable_list, list) {
++ c->lsave[cnt++] = lprops->lnum;
++ if (cnt >= c->lsave_cnt)
++ return;
++ }
++ list_for_each_entry(lprops, &c->frdi_idx_list, list) {
++ c->lsave[cnt++] = lprops->lnum;
++ if (cnt >= c->lsave_cnt)
++ return;
++ }
++ heap = &c->lpt_heap[LPROPS_DIRTY_IDX - 1];
++ for (i = 0; i < heap->cnt; i++) {
++ c->lsave[cnt++] = heap->arr[i]->lnum;
++ if (cnt >= c->lsave_cnt)
++ return;
++ }
++ heap = &c->lpt_heap[LPROPS_DIRTY - 1];
++ for (i = 0; i < heap->cnt; i++) {
++ c->lsave[cnt++] = heap->arr[i]->lnum;
++ if (cnt >= c->lsave_cnt)
++ return;
++ }
++ heap = &c->lpt_heap[LPROPS_FREE - 1];
++ for (i = 0; i < heap->cnt; i++) {
++ c->lsave[cnt++] = heap->arr[i]->lnum;
++ if (cnt >= c->lsave_cnt)
++ return;
++ }
++ /* Fill it up completely */
++ while (cnt < c->lsave_cnt)
++ c->lsave[cnt++] = c->main_first;
++}
++
++/**
++ * ubifs_lpt_start_commit - UBIFS commit starts.
++ * @c: the UBIFS file-system description object
++ *
++ * This function has to be called when UBIFS starts the commit operation.
++ * This function "freezes" all currently dirty LEB properties and does not
++ * change them anymore. Further changes are saved and tracked separately
++ * because they are not part of this commit. This function returns zero in case
++ * of success and a negative error code in case of failure.
++ */
++int ubifs_lpt_start_commit(struct ubifs_info *c)
++{
++ int err, cnt;
++
++ dbg_lp("");
++
++ mutex_lock(&c->lp_mutex);
++ err = dbg_check_ltab(c);
++ if (err)
++ goto out;
++
++ lpt_tgc_start(c);
++
++ if (!c->dirty_pn_cnt) {
++ dbg_cmt("no cnodes to commit");
++ err = 0;
++ goto out;
++ }
++
++ if (!c->big_lpt && need_write_all(c)) {
++ /* If needed, write everything */
++ err = make_tree_dirty(c);
++ if (err)
++ goto out;
++ lpt_tgc_start(c);
++ }
++
++ if (c->big_lpt)
++ populate_lsave(c);
++
++ cnt = get_cnodes_to_commit(c);
++ ubifs_assert(cnt != 0);
++
++ err = layout_cnodes(c);
++ if (err)
++ goto out;
++
++ /* Copy the LPT's own lprops for end commit to write */
++ memcpy(c->ltab_cmt, c->ltab,
++ sizeof(struct ubifs_lpt_lprops) * c->lpt_lebs);
++ c->lpt_drty_flgs &= ~(LTAB_DIRTY | LSAVE_DIRTY);
++
++out:
++ mutex_unlock(&c->lp_mutex);
++ return err;
++}
++
++/**
++ * free_obsolete_cnodes - free obsolete cnodes for commit end.
++ * @c: UBIFS file-system description object
++ */
++static void free_obsolete_cnodes(struct ubifs_info *c)
++{
++ struct ubifs_cnode *cnode, *cnext;
++
++ cnext = c->lpt_cnext;
++ if (!cnext)
++ return;
++ do {
++ cnode = cnext;
++ cnext = cnode->cnext;
++ if (test_bit(OBSOLETE_CNODE, &cnode->flags))
++ kfree(cnode);
++ else
++ cnode->cnext = NULL;
++ } while (cnext != c->lpt_cnext);
++ c->lpt_cnext = NULL;
++}
++
++/**
++ * ubifs_lpt_end_commit - finish the commit operation.
++ * @c: the UBIFS file-system description object
++ *
++ * This function has to be called when the commit operation finishes. It
++ * flushes the changes which were "frozen" by 'ubifs_lprops_start_commit()' to
++ * the media. Returns zero in case of success and a negative error code in case
++ * of failure.
++ */
++int ubifs_lpt_end_commit(struct ubifs_info *c)
++{
++ int err;
++
++ dbg_lp("");
++
++ if (!c->lpt_cnext)
++ return 0;
++
++ err = write_cnodes(c);
++ if (err)
++ return err;
++
++ mutex_lock(&c->lp_mutex);
++ free_obsolete_cnodes(c);
++ mutex_unlock(&c->lp_mutex);
++
++ return 0;
++}
++
++/**
++ * nnode_lookup - lookup a nnode in the LPT.
++ * @c: UBIFS file-system description object
++ * @i: nnode number
++ *
++ * This function returns a pointer to the nnode on success or a negative
++ * error code on failure.
++ */
++static struct ubifs_nnode *nnode_lookup(struct ubifs_info *c, int i)
++{
++ int err, iip;
++ struct ubifs_nnode *nnode;
++
++ if (!c->nroot) {
++ err = ubifs_read_nnode(c, NULL, 0);
++ if (err)
++ return ERR_PTR(err);
++ }
++ nnode = c->nroot;
++ while (1) {
++ iip = i & (UBIFS_LPT_FANOUT - 1);
++ i >>= UBIFS_LPT_FANOUT_SHIFT;
++ if (!i)
++ break;
++ nnode = ubifs_get_nnode(c, nnode, iip);
++ if (IS_ERR(nnode))
++ return nnode;
++ }
++ return nnode;
++}
++
++/**
++ * make_nnode_dirty - find a nnode and, if found, make it dirty.
++ * @c: UBIFS file-system description object
++ * @node_num: nnode number of nnode to make dirty
++ * @lnum: LEB number where nnode was written
++ * @offs: offset where nnode was written
++ *
++ * This function is used by LPT garbage collection. LPT garbage collection is
++ * used only for the "big" LPT model (c->big_lpt == 1). Garbage collection
++ * simply involves marking all the nodes in the LEB being garbage-collected as
++ * dirty. The dirty nodes are written next commit, after which the LEB is free
++ * to be reused.
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++static int make_nnode_dirty(struct ubifs_info *c, int node_num, int lnum,
++ int offs)
++{
++ struct ubifs_nnode *nnode;
++
++ nnode = nnode_lookup(c, node_num);
++ if (IS_ERR(nnode))
++ return PTR_ERR(nnode);
++ if (nnode->parent) {
++ struct ubifs_nbranch *branch;
++
++ branch = &nnode->parent->nbranch[nnode->iip];
++ if (branch->lnum != lnum || branch->offs != offs)
++ return 0; /* nnode is obsolete */
++ } else if (c->lpt_lnum != lnum || c->lpt_offs != offs)
++ return 0; /* nnode is obsolete */
++ /* Assumes cnext list is empty i.e. not called during commit */
++ if (!test_and_set_bit(DIRTY_CNODE, &nnode->flags)) {
++ c->dirty_nn_cnt += 1;
++ ubifs_add_nnode_dirt(c, nnode);
++ /* Mark parent and ancestors dirty too */
++ nnode = nnode->parent;
++ while (nnode) {
++ if (!test_and_set_bit(DIRTY_CNODE, &nnode->flags)) {
++ c->dirty_nn_cnt += 1;
++ ubifs_add_nnode_dirt(c, nnode);
++ nnode = nnode->parent;
++ } else
++ break;
++ }
++ }
++ return 0;
++}
++
++/**
++ * make_pnode_dirty - find a pnode and, if found, make it dirty.
++ * @c: UBIFS file-system description object
++ * @node_num: pnode number of pnode to make dirty
++ * @lnum: LEB number where pnode was written
++ * @offs: offset where pnode was written
++ *
++ * This function is used by LPT garbage collection. LPT garbage collection is
++ * used only for the "big" LPT model (c->big_lpt == 1). Garbage collection
++ * simply involves marking all the nodes in the LEB being garbage-collected as
++ * dirty. The dirty nodes are written next commit, after which the LEB is free
++ * to be reused.
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++static int make_pnode_dirty(struct ubifs_info *c, int node_num, int lnum,
++ int offs)
++{
++ struct ubifs_pnode *pnode;
++ struct ubifs_nbranch *branch;
++
++ pnode = pnode_lookup(c, node_num);
++ if (IS_ERR(pnode))
++ return PTR_ERR(pnode);
++ branch = &pnode->parent->nbranch[pnode->iip];
++ if (branch->lnum != lnum || branch->offs != offs)
++ return 0;
++ do_make_pnode_dirty(c, pnode);
++ return 0;
++}
++
++/**
++ * make_ltab_dirty - make ltab node dirty.
++ * @c: UBIFS file-system description object
++ * @lnum: LEB number where ltab was written
++ * @offs: offset where ltab was written
++ *
++ * This function is used by LPT garbage collection. LPT garbage collection is
++ * used only for the "big" LPT model (c->big_lpt == 1). Garbage collection
++ * simply involves marking all the nodes in the LEB being garbage-collected as
++ * dirty. The dirty nodes are written next commit, after which the LEB is free
++ * to be reused.
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++static int make_ltab_dirty(struct ubifs_info *c, int lnum, int offs)
++{
++ if (lnum != c->ltab_lnum || offs != c->ltab_offs)
++ return 0; /* This ltab node is obsolete */
++ if (!(c->lpt_drty_flgs & LTAB_DIRTY)) {
++ c->lpt_drty_flgs |= LTAB_DIRTY;
++ ubifs_add_lpt_dirt(c, c->ltab_lnum, c->ltab_sz);
++ }
++ return 0;
++}
++
++/**
++ * make_lsave_dirty - make lsave node dirty.
++ * @c: UBIFS file-system description object
++ * @lnum: LEB number where lsave was written
++ * @offs: offset where lsave was written
++ *
++ * This function is used by LPT garbage collection. LPT garbage collection is
++ * used only for the "big" LPT model (c->big_lpt == 1). Garbage collection
++ * simply involves marking all the nodes in the LEB being garbage-collected as
++ * dirty. The dirty nodes are written next commit, after which the LEB is free
++ * to be reused.
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++static int make_lsave_dirty(struct ubifs_info *c, int lnum, int offs)
++{
++ if (lnum != c->lsave_lnum || offs != c->lsave_offs)
++ return 0; /* This lsave node is obsolete */
++ if (!(c->lpt_drty_flgs & LSAVE_DIRTY)) {
++ c->lpt_drty_flgs |= LSAVE_DIRTY;
++ ubifs_add_lpt_dirt(c, c->lsave_lnum, c->lsave_sz);
++ }
++ return 0;
++}
++
++/**
++ * make_node_dirty - make node dirty.
++ * @c: UBIFS file-system description object
++ * @node_type: LPT node type
++ * @node_num: node number
++ * @lnum: LEB number where node was written
++ * @offs: offset where node was written
++ *
++ * This function is used by LPT garbage collection. LPT garbage collection is
++ * used only for the "big" LPT model (c->big_lpt == 1). Garbage collection
++ * simply involves marking all the nodes in the LEB being garbage-collected as
++ * dirty. The dirty nodes are written next commit, after which the LEB is free
++ * to be reused.
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++static int make_node_dirty(struct ubifs_info *c, int node_type, int node_num,
++ int lnum, int offs)
++{
++ switch (node_type) {
++ case UBIFS_LPT_NNODE:
++ return make_nnode_dirty(c, node_num, lnum, offs);
++ case UBIFS_LPT_PNODE:
++ return make_pnode_dirty(c, node_num, lnum, offs);
++ case UBIFS_LPT_LTAB:
++ return make_ltab_dirty(c, lnum, offs);
++ case UBIFS_LPT_LSAVE:
++ return make_lsave_dirty(c, lnum, offs);
++ }
++ return -EINVAL;
++}
++
++/**
++ * get_lpt_node_len - return the length of a node based on its type.
++ * @c: UBIFS file-system description object
++ * @node_type: LPT node type
++ */
++static int get_lpt_node_len(struct ubifs_info *c, int node_type)
++{
++ switch (node_type) {
++ case UBIFS_LPT_NNODE:
++ return c->nnode_sz;
++ case UBIFS_LPT_PNODE:
++ return c->pnode_sz;
++ case UBIFS_LPT_LTAB:
++ return c->ltab_sz;
++ case UBIFS_LPT_LSAVE:
++ return c->lsave_sz;
++ }
++ return 0;
++}
++
++/**
++ * get_pad_len - return the length of padding in a buffer.
++ * @c: UBIFS file-system description object
++ * @buf: buffer
++ * @len: length of buffer
++ */
++static int get_pad_len(struct ubifs_info *c, uint8_t *buf, int len)
++{
++ int offs, pad_len;
++
++ if (c->min_io_size == 1)
++ return 0;
++ offs = c->leb_size - len;
++ pad_len = ALIGN(offs, c->min_io_size) - offs;
++ return pad_len;
++}
++
++/**
++ * get_lpt_node_type - return type (and node number) of a node in a buffer.
++ * @c: UBIFS file-system description object
++ * @buf: buffer
++ * @node_num: node number is returned here
++ */
++static int get_lpt_node_type(struct ubifs_info *c, uint8_t *buf, int *node_num)
++{
++ uint8_t *addr = buf + UBIFS_LPT_CRC_BYTES;
++ int pos = 0, node_type;
++
++ node_type = ubifs_unpack_bits(&addr, &pos, UBIFS_LPT_TYPE_BITS);
++ *node_num = ubifs_unpack_bits(&addr, &pos, c->pcnt_bits);
++ return node_type;
++}
++
++/**
++ * is_a_node - determine if a buffer contains a node.
++ * @c: UBIFS file-system description object
++ * @buf: buffer
++ * @len: length of buffer
++ *
++ * This function returns %1 if the buffer contains a node or %0 if it does not.
++ */
++static int is_a_node(struct ubifs_info *c, uint8_t *buf, int len)
++{
++ uint8_t *addr = buf + UBIFS_LPT_CRC_BYTES;
++ int pos = 0, node_type, node_len;
++ uint16_t crc, calc_crc;
++
++ node_type = ubifs_unpack_bits(&addr, &pos, UBIFS_LPT_TYPE_BITS);
++ if (node_type == UBIFS_LPT_NOT_A_NODE)
++ return 0;
++ node_len = get_lpt_node_len(c, node_type);
++ if (!node_len || node_len > len)
++ return 0;
++ pos = 0;
++ addr = buf;
++ crc = ubifs_unpack_bits(&addr, &pos, UBIFS_LPT_CRC_BITS);
++ calc_crc = crc16(-1, buf + UBIFS_LPT_CRC_BYTES,
++ node_len - UBIFS_LPT_CRC_BYTES);
++ if (crc != calc_crc)
++ return 0;
++ return 1;
++}
++
++
++/**
++ * lpt_gc_lnum - garbage collect a LPT LEB.
++ * @c: UBIFS file-system description object
++ * @lnum: LEB number to garbage collect
++ *
++ * LPT garbage collection is used only for the "big" LPT model
++ * (c->big_lpt == 1). Garbage collection simply involves marking all the nodes
++ * in the LEB being garbage-collected as dirty. The dirty nodes are written
++ * next commit, after which the LEB is free to be reused.
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++static int lpt_gc_lnum(struct ubifs_info *c, int lnum)
++{
++ int err, len = c->leb_size, node_type, node_num, node_len, offs;
++ void *buf = c->lpt_buf;
++
++ dbg_lp("LEB %d", lnum);
++ err = ubi_read(c->ubi, lnum, buf, 0, c->leb_size);
++ if (err) {
++ ubifs_err("cannot read LEB %d, error %d", lnum, err);
++ return err;
++ }
++ while (1) {
++ if (!is_a_node(c, buf, len)) {
++ int pad_len;
++
++ pad_len = get_pad_len(c, buf, len);
++ if (pad_len) {
++ buf += pad_len;
++ len -= pad_len;
++ continue;
++ }
++ return 0;
++ }
++ node_type = get_lpt_node_type(c, buf, &node_num);
++ node_len = get_lpt_node_len(c, node_type);
++ offs = c->leb_size - len;
++ ubifs_assert(node_len != 0);
++ mutex_lock(&c->lp_mutex);
++ err = make_node_dirty(c, node_type, node_num, lnum, offs);
++ mutex_unlock(&c->lp_mutex);
++ if (err)
++ return err;
++ buf += node_len;
++ len -= node_len;
++ }
++ return 0;
++}
++
++/**
++ * lpt_gc - LPT garbage collection.
++ * @c: UBIFS file-system description object
++ *
++ * Select a LPT LEB for LPT garbage collection and call 'lpt_gc_lnum()'.
++ * Returns %0 on success and a negative error code on failure.
++ */
++static int lpt_gc(struct ubifs_info *c)
++{
++ int i, lnum = -1, dirty = 0;
++
++ mutex_lock(&c->lp_mutex);
++ for (i = 0; i < c->lpt_lebs; i++) {
++ ubifs_assert(!c->ltab[i].tgc);
++ if (i + c->lpt_first == c->nhead_lnum ||
++ c->ltab[i].free + c->ltab[i].dirty == c->leb_size)
++ continue;
++ if (c->ltab[i].dirty > dirty) {
++ dirty = c->ltab[i].dirty;
++ lnum = i + c->lpt_first;
++ }
++ }
++ mutex_unlock(&c->lp_mutex);
++ if (lnum == -1)
++ return -ENOSPC;
++ return lpt_gc_lnum(c, lnum);
++}
++
++/**
++ * ubifs_lpt_post_commit - post commit LPT trivial GC and LPT GC.
++ * @c: UBIFS file-system description object
++ *
++ * LPT trivial GC is completed after a commit. Also LPT GC is done after a
++ * commit for the "big" LPT model.
++ */
++int ubifs_lpt_post_commit(struct ubifs_info *c)
++{
++ int err;
++
++ mutex_lock(&c->lp_mutex);
++ err = lpt_tgc_end(c);
++ if (err)
++ goto out;
++ if (c->big_lpt)
++ while (need_write_all(c)) {
++ mutex_unlock(&c->lp_mutex);
++ err = lpt_gc(c);
++ if (err)
++ return err;
++ mutex_lock(&c->lp_mutex);
++ }
++out:
++ mutex_unlock(&c->lp_mutex);
++ return err;
++}
++
++/**
++ * first_nnode - find the first nnode in memory.
++ * @c: UBIFS file-system description object
++ * @hght: height of tree where nnode found is returned here
++ *
++ * This function returns a pointer to the nnode found or %NULL if no nnode is
++ * found. This function is a helper to 'ubifs_lpt_free()'.
++ */
++static struct ubifs_nnode *first_nnode(struct ubifs_info *c, int *hght)
++{
++ struct ubifs_nnode *nnode;
++ int h, i, found;
++
++ nnode = c->nroot;
++ *hght = 0;
++ if (!nnode)
++ return NULL;
++ for (h = 1; h < c->lpt_hght; h++) {
++ found = 0;
++ for (i = 0; i < UBIFS_LPT_FANOUT; i++) {
++ if (nnode->nbranch[i].nnode) {
++ found = 1;
++ nnode = nnode->nbranch[i].nnode;
++ *hght = h;
++ break;
++ }
++ }
++ if (!found)
++ break;
++ }
++ return nnode;
++}
++
++/**
++ * next_nnode - find the next nnode in memory.
++ * @c: UBIFS file-system description object
++ * @nnode: nnode from which to start.
++ * @hght: height of tree where nnode is, is passed and returned here
++ *
++ * This function returns a pointer to the nnode found or %NULL if no nnode is
++ * found. This function is a helper to 'ubifs_lpt_free()'.
++ */
++static struct ubifs_nnode *next_nnode(struct ubifs_info *c,
++ struct ubifs_nnode *nnode, int *hght)
++{
++ struct ubifs_nnode *parent;
++ int iip, h, i, found;
++
++ parent = nnode->parent;
++ if (!parent)
++ return NULL;
++ if (nnode->iip == UBIFS_LPT_FANOUT - 1) {
++ *hght -= 1;
++ return parent;
++ }
++ for (iip = nnode->iip + 1; iip < UBIFS_LPT_FANOUT; iip++) {
++ nnode = parent->nbranch[iip].nnode;
++ if (nnode)
++ break;
++ }
++ if (!nnode) {
++ *hght -= 1;
++ return parent;
++ }
++ for (h = *hght + 1; h < c->lpt_hght; h++) {
++ found = 0;
++ for (i = 0; i < UBIFS_LPT_FANOUT; i++) {
++ if (nnode->nbranch[i].nnode) {
++ found = 1;
++ nnode = nnode->nbranch[i].nnode;
++ *hght = h;
++ break;
++ }
++ }
++ if (!found)
++ break;
++ }
++ return nnode;
++}
++
++/**
++ * ubifs_lpt_free - free resources owned by the LPT.
++ * @c: UBIFS file-system description object
++ * @wr_only: free only resources used for writing
++ */
++void ubifs_lpt_free(struct ubifs_info *c, int wr_only)
++{
++ struct ubifs_nnode *nnode;
++ int i, hght;
++
++ /* Free write-only things first */
++
++ free_obsolete_cnodes(c); /* Leftover from a failed commit */
++
++ vfree(c->ltab_cmt);
++ c->ltab_cmt = NULL;
++ vfree(c->lpt_buf);
++ c->lpt_buf = NULL;
++ kfree(c->lsave);
++ c->lsave = NULL;
++
++ if (wr_only)
++ return;
++
++ /* Now free the rest */
++
++ nnode = first_nnode(c, &hght);
++ while (nnode) {
++ for (i = 0; i < UBIFS_LPT_FANOUT; i++)
++ kfree(nnode->nbranch[i].nnode);
++ nnode = next_nnode(c, nnode, &hght);
++ }
++ for (i = 0; i < LPROPS_HEAP_CNT; i++)
++ kfree(c->lpt_heap[i].arr);
++ kfree(c->dirty_idx.arr);
++ kfree(c->nroot);
++ vfree(c->ltab);
++ kfree(c->lpt_nod_buf);
++}
++
++#ifdef CONFIG_UBIFS_FS_DEBUG
++
++/**
++ * dbg_is_all_ff - determine if a buffer contains only 0xff bytes.
++ * @buf: buffer
++ * @len: buffer length
++ */
++static int dbg_is_all_ff(uint8_t *buf, int len)
++{
++ int i;
++
++ for (i = 0; i < len; i++)
++ if (buf[i] != 0xff)
++ return 0;
++ return 1;
++}
++
++/**
++ * dbg_is_nnode_dirty - determine if a nnode is dirty.
++ * @c: the UBIFS file-system description object
++ * @lnum: LEB number where nnode was written
++ * @offs: offset where nnode was written
++ */
++static int dbg_is_nnode_dirty(struct ubifs_info *c, int lnum, int offs)
++{
++ struct ubifs_nnode *nnode;
++ int hght;
++
++ /* Entire tree is in memory so first_nnode / next_nnode are ok */
++ nnode = first_nnode(c, &hght);
++ for (; nnode; nnode = next_nnode(c, nnode, &hght)) {
++ struct ubifs_nbranch *branch;
++
++ cond_resched();
++ if (nnode->parent) {
++ branch = &nnode->parent->nbranch[nnode->iip];
++ if (branch->lnum != lnum || branch->offs != offs)
++ continue;
++ if (test_bit(DIRTY_CNODE, &nnode->flags))
++ return 1;
++ return 0;
++ } else {
++ if (c->lpt_lnum != lnum || c->lpt_offs != offs)
++ continue;
++ if (test_bit(DIRTY_CNODE, &nnode->flags))
++ return 1;
++ return 0;
++ }
++ }
++ return 1;
++}
++
++/**
++ * dbg_is_pnode_dirty - determine if a pnode is dirty.
++ * @c: the UBIFS file-system description object
++ * @lnum: LEB number where pnode was written
++ * @offs: offset where pnode was written
++ */
++static int dbg_is_pnode_dirty(struct ubifs_info *c, int lnum, int offs)
++{
++ int i, cnt;
++
++ cnt = DIV_ROUND_UP(c->main_lebs, UBIFS_LPT_FANOUT);
++ for (i = 0; i < cnt; i++) {
++ struct ubifs_pnode *pnode;
++ struct ubifs_nbranch *branch;
++
++ cond_resched();
++ pnode = pnode_lookup(c, i);
++ if (IS_ERR(pnode))
++ return PTR_ERR(pnode);
++ branch = &pnode->parent->nbranch[pnode->iip];
++ if (branch->lnum != lnum || branch->offs != offs)
++ continue;
++ if (test_bit(DIRTY_CNODE, &pnode->flags))
++ return 1;
++ return 0;
++ }
++ return 1;
++}
++
++/**
++ * dbg_is_ltab_dirty - determine if a ltab node is dirty.
++ * @c: the UBIFS file-system description object
++ * @lnum: LEB number where ltab node was written
++ * @offs: offset where ltab node was written
++ */
++static int dbg_is_ltab_dirty(struct ubifs_info *c, int lnum, int offs)
++{
++ if (lnum != c->ltab_lnum || offs != c->ltab_offs)
++ return 1;
++ return (c->lpt_drty_flgs & LTAB_DIRTY) != 0;
++}
++
++/**
++ * dbg_is_lsave_dirty - determine if a lsave node is dirty.
++ * @c: the UBIFS file-system description object
++ * @lnum: LEB number where lsave node was written
++ * @offs: offset where lsave node was written
++ */
++static int dbg_is_lsave_dirty(struct ubifs_info *c, int lnum, int offs)
++{
++ if (lnum != c->lsave_lnum || offs != c->lsave_offs)
++ return 1;
++ return (c->lpt_drty_flgs & LSAVE_DIRTY) != 0;
++}
++
++/**
++ * dbg_is_node_dirty - determine if a node is dirty.
++ * @c: the UBIFS file-system description object
++ * @node_type: node type
++ * @lnum: LEB number where node was written
++ * @offs: offset where node was written
++ */
++static int dbg_is_node_dirty(struct ubifs_info *c, int node_type, int lnum,
++ int offs)
++{
++ switch (node_type) {
++ case UBIFS_LPT_NNODE:
++ return dbg_is_nnode_dirty(c, lnum, offs);
++ case UBIFS_LPT_PNODE:
++ return dbg_is_pnode_dirty(c, lnum, offs);
++ case UBIFS_LPT_LTAB:
++ return dbg_is_ltab_dirty(c, lnum, offs);
++ case UBIFS_LPT_LSAVE:
++ return dbg_is_lsave_dirty(c, lnum, offs);
++ }
++ return 1;
++}
++
++/**
++ * dbg_check_ltab_lnum - check the ltab for a LPT LEB number.
++ * @c: the UBIFS file-system description object
++ * @lnum: LEB number where node was written
++ * @offs: offset where node was written
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++static int dbg_check_ltab_lnum(struct ubifs_info *c, int lnum)
++{
++ int err, len = c->leb_size, dirty = 0, node_type, node_num, node_len;
++ int ret;
++ void *buf = c->dbg_buf;
++
++ dbg_lp("LEB %d", lnum);
++ err = ubi_read(c->ubi, lnum, buf, 0, c->leb_size);
++ if (err) {
++ dbg_msg("ubi_read failed, LEB %d, error %d", lnum, err);
++ return err;
++ }
++ while (1) {
++ if (!is_a_node(c, buf, len)) {
++ int i, pad_len;
++
++ pad_len = get_pad_len(c, buf, len);
++ if (pad_len) {
++ buf += pad_len;
++ len -= pad_len;
++ dirty += pad_len;
++ continue;
++ }
++ if (!dbg_is_all_ff(buf, len)) {
++ dbg_msg("invalid empty space in LEB %d at %d",
++ lnum, c->leb_size - len);
++ err = -EINVAL;
++ }
++ i = lnum - c->lpt_first;
++ if (len != c->ltab[i].free) {
++ dbg_msg("invalid free space in LEB %d "
++ "(free %d, expected %d)",
++ lnum, len, c->ltab[i].free);
++ err = -EINVAL;
++ }
++ if (dirty != c->ltab[i].dirty) {
++ dbg_msg("invalid dirty space in LEB %d "
++ "(dirty %d, expected %d)",
++ lnum, dirty, c->ltab[i].dirty);
++ err = -EINVAL;
++ }
++ return err;
++ }
++ node_type = get_lpt_node_type(c, buf, &node_num);
++ node_len = get_lpt_node_len(c, node_type);
++ ret = dbg_is_node_dirty(c, node_type, lnum, c->leb_size - len);
++ if (ret == 1)
++ dirty += node_len;
++ buf += node_len;
++ len -= node_len;
++ }
++}
++
++/**
++ * dbg_check_ltab - check the free and dirty space in the ltab.
++ * @c: the UBIFS file-system description object
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++int dbg_check_ltab(struct ubifs_info *c)
++{
++ int lnum, err, i, cnt;
++
++ if (!(ubifs_chk_flags & UBIFS_CHK_LPROPS))
++ return 0;
++
++ /* Bring the entire tree into memory */
++ cnt = DIV_ROUND_UP(c->main_lebs, UBIFS_LPT_FANOUT);
++ for (i = 0; i < cnt; i++) {
++ struct ubifs_pnode *pnode;
++
++ pnode = pnode_lookup(c, i);
++ if (IS_ERR(pnode))
++ return PTR_ERR(pnode);
++ cond_resched();
++ }
++
++ /* Check nodes */
++ err = dbg_check_lpt_nodes(c, (struct ubifs_cnode *)c->nroot, 0, 0);
++ if (err)
++ return err;
++
++ /* Check each LEB */
++ for (lnum = c->lpt_first; lnum <= c->lpt_last; lnum++) {
++ err = dbg_check_ltab_lnum(c, lnum);
++ if (err) {
++ dbg_err("failed at LEB %d", lnum);
++ return err;
++ }
++ }
++
++ dbg_lp("succeeded");
++ return 0;
++}
++
++#endif /* CONFIG_UBIFS_FS_DEBUG */
+diff --exclude=.git -urN linux-2.6.25.6/fs/ubifs/Makefile avr32-2.6/fs/ubifs/Makefile
+--- linux-2.6.25.6/fs/ubifs/Makefile 1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/fs/ubifs/Makefile 2008-06-12 15:09:45.311815896 +0200
+@@ -0,0 +1,9 @@
++obj-$(CONFIG_UBIFS_FS) += ubifs.o
++
++ubifs-y += shrinker.o journal.o file.o dir.o super.o sb.o io.o
++ubifs-y += tnc.o master.o scan.o replay.o log.o commit.o gc.o orphan.o
++ubifs-y += budget.o find.o tnc_commit.o compress.o lpt.o lprops.o
++ubifs-y += recovery.o ioctl.o lpt_commit.o tnc_misc.o
++
++ubifs-$(CONFIG_UBIFS_FS_DEBUG) += debug.o
++ubifs-$(CONFIG_UBIFS_FS_XATTR) += xattr.o
+diff --exclude=.git -urN linux-2.6.25.6/fs/ubifs/master.c avr32-2.6/fs/ubifs/master.c
+--- linux-2.6.25.6/fs/ubifs/master.c 1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/fs/ubifs/master.c 2008-06-12 15:09:45.475816115 +0200
+@@ -0,0 +1,387 @@
++/*
++ * This file is part of UBIFS.
++ *
++ * Copyright (C) 2006-2008 Nokia Corporation.
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published by
++ * the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but WITHOUT
++ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
++ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
++ * more details.
++ *
++ * You should have received a copy of the GNU General Public License along with
++ * this program; if not, write to the Free Software Foundation, Inc., 51
++ * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
++ *
++ * Authors: Artem Bityutskiy (Битюцкий Артём)
++ * Adrian Hunter
++ */
++
++/* This file implements reading and writing the master node */
++
++#include "ubifs.h"
++
++/**
++ * scan_for_master - search the valid master node.
++ * @c: UBIFS file-system description object
++ *
++ * This function scans the master node LEBs and search for the latest master
++ * node. Returns zero in case of success and a negative error code in case of
++ * failure.
++ */
++static int scan_for_master(struct ubifs_info *c)
++{
++ struct ubifs_scan_leb *sleb;
++ struct ubifs_scan_node *snod;
++ int lnum, offs = 0, nodes_cnt;
++
++ lnum = UBIFS_MST_LNUM;
++
++ sleb = ubifs_scan(c, lnum, 0, c->sbuf);
++ if (IS_ERR(sleb))
++ return PTR_ERR(sleb);
++ nodes_cnt = sleb->nodes_cnt;
++ if (nodes_cnt > 0) {
++ snod = list_entry(sleb->nodes.prev, struct ubifs_scan_node,
++ list);
++ if (snod->type != UBIFS_MST_NODE)
++ goto out;
++ memcpy(c->mst_node, snod->node, snod->len);
++ offs = snod->offs;
++ }
++ ubifs_scan_destroy(sleb);
++
++ lnum += 1;
++
++ sleb = ubifs_scan(c, lnum, 0, c->sbuf);
++ if (IS_ERR(sleb))
++ return PTR_ERR(sleb);
++ if (sleb->nodes_cnt != nodes_cnt)
++ goto out;
++ if (!sleb->nodes_cnt)
++ goto out;
++ snod = list_entry(sleb->nodes.prev, struct ubifs_scan_node, list);
++ if (snod->type != UBIFS_MST_NODE)
++ goto out;
++ if (snod->offs != offs)
++ goto out;
++ if (memcmp((void *)c->mst_node + UBIFS_CH_SZ,
++ (void *)snod->node + UBIFS_CH_SZ,
++ UBIFS_MST_NODE_SZ - UBIFS_CH_SZ))
++ goto out;
++ c->mst_offs = offs;
++ ubifs_scan_destroy(sleb);
++ return 0;
++
++out:
++ ubifs_scan_destroy(sleb);
++ return -EINVAL;
++}
++
++/**
++ * validate_master - validate master node.
++ * @c: UBIFS file-system description object
++ *
++ * This function validates data which was read from master node. Returns zero
++ * if the data is all right and %-EINVAL if not.
++ */
++static int validate_master(const struct ubifs_info *c)
++{
++ unsigned long long main_sz;
++ int err;
++
++ if (c->max_sqnum >= SQNUM_WATERMARK) {
++ err = 1;
++ goto out;
++ }
++
++ if (c->cmt_no >= c->max_sqnum) {
++ err = 2;
++ goto out;
++ }
++
++ if (c->highest_inum >= INUM_WATERMARK) {
++ err = 3;
++ goto out;
++ }
++
++ if (c->lhead_lnum < UBIFS_LOG_LNUM ||
++ c->lhead_lnum >= UBIFS_LOG_LNUM + c->log_lebs ||
++ c->lhead_offs < 0 || c->lhead_offs >= c->leb_size ||
++ c->lhead_offs & (c->min_io_size - 1)) {
++ err = 4;
++ goto out;
++ }
++
++ if (c->zroot.lnum >= c->leb_cnt || c->zroot.lnum < c->main_first ||
++ c->zroot.offs >= c->leb_size || c->zroot.offs & 7) {
++ err = 5;
++ goto out;
++ }
++
++ if (c->zroot.len < c->ranges[UBIFS_IDX_NODE].min_len ||
++ c->zroot.len > c->ranges[UBIFS_IDX_NODE].max_len) {
++ err = 6;
++ goto out;
++ }
++
++ if (c->gc_lnum >= c->leb_cnt || c->gc_lnum < c->main_first) {
++ err = 7;
++ goto out;
++ }
++
++ if (c->ihead_lnum >= c->leb_cnt || c->ihead_lnum < c->main_first ||
++ c->ihead_offs % c->min_io_size || c->ihead_offs < 0 ||
++ c->ihead_offs > c->leb_size || c->ihead_offs & 7) {
++ err = 8;
++ goto out;
++ }
++
++ main_sz = c->main_lebs * (unsigned long long)c->leb_size;
++ if (c->old_idx_sz & 7 || c->old_idx_sz >= main_sz) {
++ err = 9;
++ goto out;
++ }
++
++ if (c->lpt_lnum < c->lpt_first || c->lpt_lnum > c->lpt_last ||
++ c->lpt_offs < 0 || c->lpt_offs + c->nnode_sz > c->leb_size) {
++ err = 10;
++ goto out;
++ }
++
++ if (c->nhead_lnum < c->lpt_first || c->nhead_lnum > c->lpt_last ||
++ c->nhead_offs < 0 || c->nhead_offs % c->min_io_size ||
++ c->nhead_offs > c->leb_size) {
++ err = 11;
++ goto out;
++ }
++
++ if (c->ltab_lnum < c->lpt_first || c->ltab_lnum > c->lpt_last ||
++ c->ltab_offs < 0 ||
++ c->ltab_offs + c->ltab_sz > c->leb_size) {
++ err = 12;
++ goto out;
++ }
++
++ if (c->big_lpt && (c->lsave_lnum < c->lpt_first ||
++ c->lsave_lnum > c->lpt_last || c->lsave_offs < 0 ||
++ c->lsave_offs + c->lsave_sz > c->leb_size)) {
++ err = 13;
++ goto out;
++ }
++
++ if (c->lscan_lnum < c->main_first || c->lscan_lnum >= c->leb_cnt) {
++ err = 14;
++ goto out;
++ }
++
++ if (c->lst.empty_lebs < 0 || c->lst.empty_lebs > c->main_lebs - 2) {
++ err = 15;
++ goto out;
++ }
++
++ if (c->lst.idx_lebs < 0 || c->lst.idx_lebs > c->main_lebs - 1) {
++ err = 16;
++ goto out;
++ }
++
++ if (c->lst.total_free < 0 || c->lst.total_free > main_sz ||
++ c->lst.total_free & 7) {
++ err = 17;
++ goto out;
++ }
++
++ if (c->lst.total_dirty < 0 || (c->lst.total_dirty & 7)) {
++ err = 18;
++ goto out;
++ }
++
++ if (c->lst.total_used < 0 || (c->lst.total_used & 7)) {
++ err = 19;
++ goto out;
++ }
++
++ if (c->lst.total_free + c->lst.total_dirty +
++ c->lst.total_used > main_sz) {
++ err = 20;
++ goto out;
++ }
++
++ if (c->lst.total_dead + c->lst.total_dark +
++ c->lst.total_used + c->old_idx_sz > main_sz) {
++ err = 21;
++ goto out;
++ }
++
++ if (c->lst.total_dead < 0 ||
++ c->lst.total_dead > c->lst.total_free + c->lst.total_dirty ||
++ c->lst.total_dead & 7) {
++ err = 22;
++ goto out;
++ }
++
++ if (c->lst.total_dark < 0 ||
++ c->lst.total_dark > c->lst.total_free + c->lst.total_dirty ||
++ c->lst.total_dark & 7) {
++ err = 23;
++ goto out;
++ }
++
++ return 0;
++
++out:
++ ubifs_err("bad master node at offset %d error %d", c->mst_offs, err);
++ dbg_dump_node(c, c->mst_node);
++ return -EINVAL;
++}
++
++/**
++ * ubifs_read_master - read master node.
++ * @c: UBIFS file-system description object
++ *
++ * This function finds and reads the master node during file-system mount. If
++ * the flash is empty, it creates default master node as well. Returns zero in
++ * case of success and a negative error code in case of failure.
++ */
++int ubifs_read_master(struct ubifs_info *c)
++{
++ int err, old_leb_cnt;
++
++ c->mst_node = kzalloc(c->mst_node_alsz, GFP_KERNEL);
++ if (!c->mst_node)
++ return -ENOMEM;
++
++ err = scan_for_master(c);
++ if (err) {
++ err = ubifs_recover_master_node(c);
++ if (err)
++ /*
++ * Note, we do not free 'c->mst_node' here because the
++ * unmount routine will take care of this.
++ */
++ return err;
++ }
++
++ /* Make sure that the recovery flag is clear */
++ c->mst_node->flags &= cpu_to_le32(~UBIFS_MST_RCVRY);
++
++ c->max_sqnum = le64_to_cpu(c->mst_node->ch.sqnum);
++ c->highest_inum = le64_to_cpu(c->mst_node->highest_inum);
++ c->cmt_no = le64_to_cpu(c->mst_node->cmt_no);
++ c->zroot.lnum = le32_to_cpu(c->mst_node->root_lnum);
++ c->zroot.offs = le32_to_cpu(c->mst_node->root_offs);
++ c->zroot.len = le32_to_cpu(c->mst_node->root_len);
++ c->lhead_lnum = le32_to_cpu(c->mst_node->log_lnum);
++ c->gc_lnum = le32_to_cpu(c->mst_node->gc_lnum);
++ c->ihead_lnum = le32_to_cpu(c->mst_node->ihead_lnum);
++ c->ihead_offs = le32_to_cpu(c->mst_node->ihead_offs);
++ c->old_idx_sz = le64_to_cpu(c->mst_node->index_size);
++ c->lpt_lnum = le32_to_cpu(c->mst_node->lpt_lnum);
++ c->lpt_offs = le32_to_cpu(c->mst_node->lpt_offs);
++ c->nhead_lnum = le32_to_cpu(c->mst_node->nhead_lnum);
++ c->nhead_offs = le32_to_cpu(c->mst_node->nhead_offs);
++ c->ltab_lnum = le32_to_cpu(c->mst_node->ltab_lnum);
++ c->ltab_offs = le32_to_cpu(c->mst_node->ltab_offs);
++ c->lsave_lnum = le32_to_cpu(c->mst_node->lsave_lnum);
++ c->lsave_offs = le32_to_cpu(c->mst_node->lsave_offs);
++ c->lscan_lnum = le32_to_cpu(c->mst_node->lscan_lnum);
++ c->lst.empty_lebs = le32_to_cpu(c->mst_node->empty_lebs);
++ c->lst.idx_lebs = le32_to_cpu(c->mst_node->idx_lebs);
++ old_leb_cnt = le32_to_cpu(c->mst_node->leb_cnt);
++ c->lst.total_free = le64_to_cpu(c->mst_node->total_free);
++ c->lst.total_dirty = le64_to_cpu(c->mst_node->total_dirty);
++ c->lst.total_used = le64_to_cpu(c->mst_node->total_used);
++ c->lst.total_dead = le64_to_cpu(c->mst_node->total_dead);
++ c->lst.total_dark = le64_to_cpu(c->mst_node->total_dark);
++
++ c->calc_idx_sz = c->old_idx_sz;
++
++ if (c->mst_node->flags & cpu_to_le32(UBIFS_MST_NO_ORPHS))
++ c->no_orphs = 1;
++
++ if (old_leb_cnt != c->leb_cnt) {
++ /* The file system has been resized */
++ int growth = c->leb_cnt - old_leb_cnt;
++
++ if (c->leb_cnt < old_leb_cnt ||
++ c->leb_cnt < UBIFS_MIN_LEB_CNT) {
++ ubifs_err("bad leb_cnt on master node");
++ dbg_dump_node(c, c->mst_node);
++ return -EINVAL;
++ }
++
++ dbg_mnt("Auto resizing (master) from %d LEBs to %d LEBs",
++ old_leb_cnt, c->leb_cnt);
++ c->lst.empty_lebs += growth;
++ c->lst.total_free += growth * (long long)c->leb_size;
++ c->lst.total_dark += growth * (long long)c->dark_wm;
++
++ /*
++ * Reflect changes back onto the master node. N.B. the master
++ * node gets written immediately whenever mounting (or
++ * remounting) in read-write mode, so we do not need to write it
++ * here.
++ */
++ c->mst_node->leb_cnt = cpu_to_le32(c->leb_cnt);
++ c->mst_node->empty_lebs = cpu_to_le32(c->lst.empty_lebs);
++ c->mst_node->total_free = cpu_to_le64(c->lst.total_free);
++ c->mst_node->total_dark = cpu_to_le64(c->lst.total_dark);
++ }
++
++ err = validate_master(c);
++ if (err)
++ return err;
++
++ err = dbg_old_index_check_init(c, &c->zroot);
++
++ return err;
++}
++
++/**
++ * ubifs_write_master - write master node.
++ * @c: UBIFS file-system description object
++ *
++ * This function writes the master node. The caller has to take the
++ * @c->mst_mutex lock before calling this function. Returns zero in case of
++ * success and a negative error code in case of failure. The master node is
++ * written twice to enable recovery.
++ */
++int ubifs_write_master(struct ubifs_info *c)
++{
++ int err, lnum, offs, len;
++
++ if (c->ro_media)
++ return -EINVAL;
++
++ lnum = UBIFS_MST_LNUM;
++ offs = c->mst_offs + c->mst_node_alsz;
++ len = UBIFS_MST_NODE_SZ;
++
++ if (offs + UBIFS_MST_NODE_SZ > c->leb_size) {
++ err = ubifs_leb_unmap(c, lnum);
++ if (err)
++ return err;
++ offs = 0;
++ }
++
++ c->mst_offs = offs;
++ c->mst_node->highest_inum = cpu_to_le64(c->highest_inum);
++
++ err = ubifs_write_node(c, c->mst_node, len, lnum, offs, UBI_SHORTTERM);
++ if (err)
++ return err;
++
++ lnum += 1;
++
++ if (offs == 0) {
++ err = ubifs_leb_unmap(c, lnum);
++ if (err)
++ return err;
++ }
++ err = ubifs_write_node(c, c->mst_node, len, lnum, offs, UBI_SHORTTERM);
++
++ return err;
++}
+diff --exclude=.git -urN linux-2.6.25.6/fs/ubifs/misc.h avr32-2.6/fs/ubifs/misc.h
+--- linux-2.6.25.6/fs/ubifs/misc.h 1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/fs/ubifs/misc.h 2008-06-12 15:09:45.475816115 +0200
+@@ -0,0 +1,311 @@
++/*
++ * This file is part of UBIFS.
++ *
++ * Copyright (C) 2006-2008 Nokia Corporation
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published by
++ * the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but WITHOUT
++ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
++ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
++ * more details.
++ *
++ * You should have received a copy of the GNU General Public License along with
++ * this program; if not, write to the Free Software Foundation, Inc., 51
++ * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
++ *
++ * Authors: Artem Bityutskiy (Битюцкий Артём)
++ * Adrian Hunter
++ */
++
++/*
++ * This file contains miscellaneous helper functions.
++ */
++
++#ifndef __UBIFS_MISC_H__
++#define __UBIFS_MISC_H__
++
++/**
++ * ubifs_zn_dirty - check if znode is dirty.
++ * @znode: znode to check
++ *
++ * This helper function returns %1 if @znode is dirty and %0 otherwise.
++ */
++static inline int ubifs_zn_dirty(const struct ubifs_znode *znode)
++{
++ return !!test_bit(DIRTY_ZNODE, &znode->flags);
++}
++
++/**
++ * ubifs_wake_up_bgt - wake up background thread.
++ * @c: UBIFS file-system description object
++ */
++static inline void ubifs_wake_up_bgt(struct ubifs_info *c)
++{
++ if (c->bgt && !c->need_bgt) {
++ c->need_bgt = 1;
++ wake_up_process(c->bgt);
++ }
++}
++
++/**
++ * ubifs_tnc_find_child - find next child in znode.
++ * @znode: znode to search at
++ * @start: the zbranch index to start at
++ *
++ * This helper function looks for znode child starting at index @start. Returns
++ * the child or %NULL if no children were found.
++ */
++static inline struct ubifs_znode *
++ubifs_tnc_find_child(struct ubifs_znode *znode, int start)
++{
++ while (start < znode->child_cnt) {
++ if (znode->zbranch[start].znode)
++ return znode->zbranch[start].znode;
++ start += 1;
++ }
++
++ return NULL;
++}
++
++/**
++ * ubifs_inode - get UBIFS inode information by VFS 'struct inode' object.
++ * @inode: the VFS 'struct inode' pointer
++ */
++static inline struct ubifs_inode *ubifs_inode(const struct inode *inode)
++{
++ return container_of(inode, struct ubifs_inode, vfs_inode);
++}
++
++/**
++ * ubifs_ro_mode - switch UBIFS to read read-only mode.
++ * @c: UBIFS file-system description object
++ * @err: error code which is the reason of switching to R/O mode
++ */
++static inline void ubifs_ro_mode(struct ubifs_info *c, int err)
++{
++ if (!c->ro_media) {
++ c->ro_media = 1;
++ ubifs_warn("switched to read-only mode, error %d", err);
++ dbg_dump_stack();
++ }
++}
++
++/**
++ * ubifs_compr_present - check if compressor was compiled in.
++ * @compr_type: compressor type to check
++ *
++ * This function returns %1 of compressor of type @compr_type is present, and
++ * %0 if not.
++ */
++static inline int ubifs_compr_present(int compr_type)
++{
++ ubifs_assert(compr_type >= 0 && compr_type < UBIFS_COMPR_TYPES_CNT);
++ return !!ubifs_compressors[compr_type]->capi_name;
++}
++
++/**
++ * ubifs_compr_name - get compressor name string by its type.
++ * @compr_type: compressor type
++ *
++ * This function returns compressor type string.
++ */
++static inline const char *ubifs_compr_name(int compr_type)
++{
++ ubifs_assert(compr_type >= 0 && compr_type < UBIFS_COMPR_TYPES_CNT);
++ return ubifs_compressors[compr_type]->name;
++}
++
++/**
++ * ubifs_wbuf_sync - synchronize write-buffer.
++ * @wbuf: write-buffer to synchronize
++ *
++ * This is the same as as 'ubifs_wbuf_sync_nolock()' but it does not assume
++ * that the write-buffer is already locked.
++ */
++static inline int ubifs_wbuf_sync(struct ubifs_wbuf *wbuf)
++{
++ int err;
++
++ mutex_lock_nested(&wbuf->io_mutex, wbuf->jhead);
++ err = ubifs_wbuf_sync_nolock(wbuf);
++ mutex_unlock(&wbuf->io_mutex);
++ return err;
++}
++
++/**
++ * ubifs_leb_unmap - unmap an LEB.
++ * @c: UBIFS file-system description object
++ * @lnum: LEB number to unmap
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++static inline int ubifs_leb_unmap(const struct ubifs_info *c, int lnum)
++{
++ int err;
++
++ err = ubi_leb_unmap(c->ubi, lnum);
++ if (err) {
++ ubifs_err("unmap LEB %d failed, error %d", lnum, err);
++ return err;
++ }
++
++ return 0;
++}
++
++/**
++ * ubifs_leb_write - write to a LEB.
++ * @c: UBIFS file-system description object
++ * @lnum: LEB number to write
++ * @buf: buffer to write from
++ * @offs: offset within LEB to write to
++ * @len: length to write
++ * @dtype: data type
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++static inline int ubifs_leb_write(const struct ubifs_info *c, int lnum,
++ const void *buf, int offs, int len, int dtype)
++{
++ int err;
++
++ err = ubi_leb_write(c->ubi, lnum, buf, offs, len, dtype);
++ if (err) {
++ ubifs_err("writing %d bytes at %d:%d, error %d",
++ len, lnum, offs, err);
++ return err;
++ }
++
++ return 0;
++}
++
++/**
++ * ubifs_encode_dev - encode device node IDs.
++ * @dev: UBIFS device node information
++ * @rdev: device IDs to encode
++ *
++ * This is a helper function which encodes major/minor numbers of a device node
++ * into UBIFS device node description. We use standard Linux "new" and "huge"
++ * encodings.
++ */
++static inline int ubifs_encode_dev(union ubifs_dev_desc *dev, dev_t rdev)
++{
++ if (new_valid_dev(rdev)) {
++ dev->new = cpu_to_le32(new_encode_dev(rdev));
++ return sizeof(dev->new);
++ } else {
++ dev->huge = cpu_to_le64(huge_encode_dev(rdev));
++ return sizeof(dev->huge);
++ }
++}
++
++/**
++ * ubifs_add_dirt - add dirty space to LEB properties.
++ * @c: the UBIFS file-system description object
++ * @lnum: LEB to add dirty space for
++ * @dirty: dirty space to add
++ *
++ * This is a helper function which increased amount of dirty LEB space. Returns
++ * zero in case of success and a negative error code in case of failure.
++ */
++static inline int ubifs_add_dirt(struct ubifs_info *c, int lnum, int dirty)
++{
++ return ubifs_update_one_lp(c, lnum, LPROPS_NC, dirty, 0, 0);
++}
++
++/**
++ * ubifs_return_leb - return LEB to lprops.
++ * @c: the UBIFS file-system description object
++ * @lnum: LEB to return
++ *
++ * This helper function cleans the "taken" flag of a logical eraseblock in the
++ * lprops. Returns zero in case of success and a negative error code in case of
++ * failure.
++ */
++static inline int ubifs_return_leb(struct ubifs_info *c, int lnum)
++{
++ return ubifs_change_one_lp(c, lnum, LPROPS_NC, LPROPS_NC, 0,
++ LPROPS_TAKEN, 0);
++}
++
++/**
++ * ubifs_idx_node_sz - return index node size.
++ * @c: the UBIFS file-system description object
++ * @child_cnt: number of children of this index node
++ */
++static inline int ubifs_idx_node_sz(const struct ubifs_info *c, int child_cnt)
++{
++ return UBIFS_IDX_NODE_SZ + (UBIFS_BRANCH_SZ + c->key_len) * child_cnt;
++}
++
++/**
++ * ubifs_idx_branch - return pointer to an index branch.
++ * @c: the UBIFS file-system description object
++ * @idx: index node
++ * @bnum: branch number
++ */
++static inline
++struct ubifs_branch *ubifs_idx_branch(const struct ubifs_info *c,
++ const struct ubifs_idx_node *idx,
++ int bnum)
++{
++ return (struct ubifs_branch *)((void *)idx->branches +
++ (UBIFS_BRANCH_SZ + c->key_len) * bnum);
++}
++
++/**
++ * ubifs_idx_key - return pointer to an index key.
++ * @c: the UBIFS file-system description object
++ * @idx: index node
++ */
++static inline void *ubifs_idx_key(const struct ubifs_info *c,
++ const struct ubifs_idx_node *idx)
++{
++ return (void *)((struct ubifs_branch *)idx->branches)->key;
++}
++
++/**
++ * ubifs_reported_space - calculate reported free space.
++ * @c: the UBIFS file-system description object
++ * @free: amount of free space
++ *
++ * This function calculates amount of free space which will be reported to
++ * user-space. User-space application tend to expect that if the file-system
++ * (e.g., via the 'statfs()' call) reports that it has N bytes available, they
++ * are able to write a file of size N. UBIFS attaches node headers to each data
++ * node and it has to write indexind nodes as well. This introduces additional
++ * overhead, and UBIFS it has to report sligtly less free space to meet the
++ * above expectetion.
++ *
++ * This function assumes free space is made up of uncompressed data nodes and
++ * full index nodes (one per data node, doubled because we always allow enough
++ * space to write the index twice).
++ *
++ * Note, the calculation is pessimistic, which means that most of the time
++ * UBIFS reports less space than it actually has.
++ */
++static inline long long ubifs_reported_space(const struct ubifs_info *c,
++ uint64_t free)
++{
++ int divisor, factor;
++
++ divisor = UBIFS_MAX_DATA_NODE_SZ + (c->max_idx_node_sz << 1);
++ factor = UBIFS_MAX_DATA_NODE_SZ - UBIFS_DATA_NODE_SZ;
++ do_div(free, divisor);
++
++ return free * factor;
++}
++
++/**
++ * ubifs_current_time - round current time to time granularity.
++ * @inode: inode
++ */
++static inline struct timespec ubifs_current_time(struct inode *inode)
++{
++ return (inode->i_sb->s_time_gran < NSEC_PER_SEC) ?
++ current_fs_time(inode->i_sb) : CURRENT_TIME_SEC;
++}
++
++#endif /* __UBIFS_MISC_H__ */
+diff --exclude=.git -urN linux-2.6.25.6/fs/ubifs/orphan.c avr32-2.6/fs/ubifs/orphan.c
+--- linux-2.6.25.6/fs/ubifs/orphan.c 1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/fs/ubifs/orphan.c 2008-06-12 15:09:45.475816115 +0200
+@@ -0,0 +1,958 @@
++/*
++ * This file is part of UBIFS.
++ *
++ * Copyright (C) 2006-2008 Nokia Corporation.
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published by
++ * the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but WITHOUT
++ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
++ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
++ * more details.
++ *
++ * You should have received a copy of the GNU General Public License along with
++ * this program; if not, write to the Free Software Foundation, Inc., 51
++ * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
++ *
++ * Author: Adrian Hunter
++ */
++
++#include "ubifs.h"
++
++/*
++ * An orphan is an inode number whose inode node has been committed to the index
++ * with a link count of zero. That happens when an open file is deleted
++ * (unlinked) and then a commit is run. In the normal course of events the inode
++ * would be deleted when the file is closed. However in the case of an unclean
++ * unmount, orphans need to be accounted for. After an unclean unmount, the
++ * orphans' inodes must be deleted which means either scanning the entire index
++ * looking for them, or keeping a list on flash somewhere. This unit implements
++ * the latter approach.
++ *
++ * The orphan area is a fixed number of LEBs situated between the LPT area and
++ * the main area. The number of orphan area LEBs is specified when the file
++ * system is created. The minimum number is 1. The size of the orphan area
++ * should be so that it can hold the maximum number of orphans that are expected
++ * to ever exist at one time.
++ *
++ * The number of orphans that can fit in a LEB is:
++ *
++ * (c->leb_size - UBIFS_ORPH_NODE_SZ) / sizeof(__le64)
++ *
++ * For example: a 15872 byte LEB can fit 1980 orphans so 1 LEB may be enough.
++ *
++ * Orphans are accumulated in a rb-tree. When an inode's link count drops to
++ * zero, the inode number is added to the rb-tree. It is removed from the tree
++ * when the inode is deleted. Any new orphans that are in the orphan tree when
++ * the commit is run, are written to the orphan area in 1 or more orph nodes.
++ * If the orphan area is full, it is consolidated to make space. There is
++ * always enough space because validation prevents the user from creating more
++ * than the maximum number of orphans allowed.
++ */
++
++#ifdef CONFIG_UBIFS_FS_DEBUG
++static int dbg_check_orphans(struct ubifs_info *c);
++#else
++#define dbg_check_orphans(c) 0
++#endif
++
++/**
++ * ubifs_add_orphan - add an orphan.
++ * @c: UBIFS file-system description object
++ * @inum: orphan inode number
++ *
++ * Add an orphan. This function is called when an inodes link count drops to
++ * zero.
++ */
++int ubifs_add_orphan(struct ubifs_info *c, ino_t inum)
++{
++ struct ubifs_orphan *orphan, *o;
++ struct rb_node **p, *parent = NULL;
++
++ orphan = kzalloc(sizeof(struct ubifs_orphan), GFP_NOFS);
++ if (!orphan)
++ return -ENOMEM;
++ orphan->inum = inum;
++ orphan->new = 1;
++
++ spin_lock(&c->orphan_lock);
++ if (c->tot_orphans >= c->max_orphans) {
++ spin_unlock(&c->orphan_lock);
++ kfree(orphan);
++ return -ENFILE;
++ }
++ p = &c->orph_tree.rb_node;
++ while (*p) {
++ parent = *p;
++ o = rb_entry(parent, struct ubifs_orphan, rb);
++ if (inum < o->inum)
++ p = &(*p)->rb_left;
++ else if (inum > o->inum)
++ p = &(*p)->rb_right;
++ else {
++ dbg_err("orphaned twice");
++ spin_unlock(&c->orphan_lock);
++ kfree(orphan);
++ return 0;
++ }
++ }
++ c->tot_orphans += 1;
++ c->new_orphans += 1;
++ rb_link_node(&orphan->rb, parent, p);
++ rb_insert_color(&orphan->rb, &c->orph_tree);
++ list_add_tail(&orphan->list, &c->orph_list);
++ list_add_tail(&orphan->new_list, &c->orph_new);
++ spin_unlock(&c->orphan_lock);
++ dbg_gen("ino %lu", inum);
++ return 0;
++}
++
++/**
++ * ubifs_delete_orphan - delete an orphan.
++ * @c: UBIFS file-system description object
++ * @inum: orphan inode number
++ *
++ * Delete an orphan. This function is called when an inode is deleted.
++ */
++void ubifs_delete_orphan(struct ubifs_info *c, ino_t inum)
++{
++ struct ubifs_orphan *o;
++ struct rb_node *p;
++
++ spin_lock(&c->orphan_lock);
++ p = c->orph_tree.rb_node;
++ while (p) {
++ o = rb_entry(p, struct ubifs_orphan, rb);
++ if (inum < o->inum)
++ p = p->rb_left;
++ else if (inum > o->inum)
++ p = p->rb_right;
++ else {
++ if (o->dnext) {
++ spin_unlock(&c->orphan_lock);
++ dbg_gen("deleted twice ino %lu", inum);
++ return;
++ }
++ if (o->cnext) {
++ o->dnext = c->orph_dnext;
++ c->orph_dnext = o;
++ spin_unlock(&c->orphan_lock);
++ dbg_gen("delete later ino %lu", inum);
++ return;
++ }
++ rb_erase(p, &c->orph_tree);
++ list_del(&o->list);
++ c->tot_orphans -= 1;
++ if (o->new) {
++ list_del(&o->new_list);
++ c->new_orphans -= 1;
++ }
++ spin_unlock(&c->orphan_lock);
++ kfree(o);
++ dbg_gen("inum %lu", inum);
++ return;
++ }
++ }
++ spin_unlock(&c->orphan_lock);
++ dbg_err("missing orphan ino %lu", inum);
++ dbg_dump_stack();
++}
++
++/**
++ * ubifs_orphan_start_commit - start commit of orphans.
++ * @c: UBIFS file-system description object
++ *
++ * Start commit of orphans.
++ */
++int ubifs_orphan_start_commit(struct ubifs_info *c)
++{
++ struct ubifs_orphan *orphan, **last;
++
++ spin_lock(&c->orphan_lock);
++ last = &c->orph_cnext;
++ list_for_each_entry(orphan, &c->orph_new, new_list) {
++ ubifs_assert(orphan->new);
++ orphan->new = 0;
++ *last = orphan;
++ last = &orphan->cnext;
++ }
++ *last = orphan->cnext;
++ c->cmt_orphans = c->new_orphans;
++ c->new_orphans = 0;
++ dbg_cmt("%d orphans to commit", c->cmt_orphans);
++ INIT_LIST_HEAD(&c->orph_new);
++ if (c->tot_orphans == 0)
++ c->no_orphs = 1;
++ else
++ c->no_orphs = 0;
++ spin_unlock(&c->orphan_lock);
++ return 0;
++}
++
++/**
++ * avail_orphs - calculate available space.
++ * @c: UBIFS file-system description object
++ *
++ * This function returns the number of orphans that can be written in the
++ * available space.
++ */
++static int avail_orphs(struct ubifs_info *c)
++{
++ int avail_lebs, avail, gap;
++
++ avail_lebs = c->orph_lebs - (c->ohead_lnum - c->orph_first) - 1;
++ avail = avail_lebs *
++ ((c->leb_size - UBIFS_ORPH_NODE_SZ) / sizeof(__le64));
++ gap = c->leb_size - c->ohead_offs;
++ if (gap >= UBIFS_ORPH_NODE_SZ + sizeof(__le64))
++ avail += (gap - UBIFS_ORPH_NODE_SZ) / sizeof(__le64);
++ return avail;
++}
++
++/**
++ * tot_avail_orphs - calculate total space.
++ * @c: UBIFS file-system description object
++ *
++ * This function returns the number of orphans that can be written in half
++ * the total space. That leaves half the space for adding new orphans.
++ */
++static int tot_avail_orphs(struct ubifs_info *c)
++{
++ int avail_lebs, avail;
++
++ avail_lebs = c->orph_lebs;
++ avail = avail_lebs *
++ ((c->leb_size - UBIFS_ORPH_NODE_SZ) / sizeof(__le64));
++ return avail / 2;
++}
++
++/**
++ * do_write_orph_node - write a node
++ * @c: UBIFS file-system description object
++ * @len: length of node
++ * @atomic: write atomically
++ *
++ * This function writes a node to the orphan head from the orphan buffer. If
++ * %atomic is not zero, then the write is done atomically. On success, %0 is
++ * returned, otherwise a negative error code is returned.
++ */
++static int do_write_orph_node(struct ubifs_info *c, int len, int atomic)
++{
++ int err = 0;
++
++ if (atomic) {
++ ubifs_assert(c->ohead_offs == 0);
++ ubifs_prepare_node(c, c->orph_buf, len, 1);
++ len = ALIGN(len, c->min_io_size);
++ err = ubi_leb_change(c->ubi, c->ohead_lnum, c->orph_buf, len,
++ UBI_SHORTTERM);
++ } else {
++ if (c->ohead_offs == 0) {
++ /* Ensure LEB has been unmapped */
++ err = ubifs_leb_unmap(c, c->ohead_lnum);
++ if (err)
++ return err;
++ }
++ err = ubifs_write_node(c, c->orph_buf, len, c->ohead_lnum,
++ c->ohead_offs, UBI_SHORTTERM);
++ }
++ return err;
++}
++
++/**
++ * write_orph_node - write an orph node
++ * @c: UBIFS file-system description object
++ * @atomic: write atomically
++ *
++ * This function builds an orph node from the cnext list and writes it to the
++ * orphan head. On success, %0 is returned, otherwise a negative error code
++ * is returned.
++ */
++static int write_orph_node(struct ubifs_info *c, int atomic)
++{
++ struct ubifs_orphan *orphan, *cnext;
++ struct ubifs_orph_node *orph;
++ int gap, err, len, cnt, i;
++
++ ubifs_assert(c->cmt_orphans > 0);
++ gap = c->leb_size - c->ohead_offs;
++ if (gap < UBIFS_ORPH_NODE_SZ + sizeof(__le64)) {
++ c->ohead_lnum += 1;
++ c->ohead_offs = 0;
++ gap = c->leb_size;
++ if (c->ohead_lnum > c->orph_last) {
++ /*
++ * We limit the number of orphans so that this should
++ * never happen.
++ */
++ ubifs_err("out of space in orphan area");
++ return -EINVAL;
++ }
++ }
++ cnt = (gap - UBIFS_ORPH_NODE_SZ) / sizeof(__le64);
++ if (cnt > c->cmt_orphans)
++ cnt = c->cmt_orphans;
++ len = UBIFS_ORPH_NODE_SZ + cnt * sizeof(__le64);
++ ubifs_assert(c->orph_buf);
++ orph = c->orph_buf;
++ orph->ch.node_type = UBIFS_ORPH_NODE;
++ spin_lock(&c->orphan_lock);
++ cnext = c->orph_cnext;
++ for (i = 0; i < cnt; i++) {
++ orphan = cnext;
++ orph->inos[i] = cpu_to_le64(orphan->inum);
++ cnext = orphan->cnext;
++ orphan->cnext = NULL;
++ }
++ c->orph_cnext = cnext;
++ c->cmt_orphans -= cnt;
++ spin_unlock(&c->orphan_lock);
++ if (c->cmt_orphans)
++ orph->cmt_no = cpu_to_le64(c->cmt_no + 1);
++ else
++ /* Mark the last node of the commit */
++ orph->cmt_no = cpu_to_le64((c->cmt_no + 1) | (1ULL << 63));
++ ubifs_assert(c->ohead_offs + len <= c->leb_size);
++ ubifs_assert(c->ohead_lnum >= c->orph_first);
++ ubifs_assert(c->ohead_lnum <= c->orph_last);
++ err = do_write_orph_node(c, len, atomic);
++ c->ohead_offs += ALIGN(len, c->min_io_size);
++ c->ohead_offs = ALIGN(c->ohead_offs, 8);
++ return err;
++}
++
++/**
++ * write_orph_nodes - write orph nodes until there are no more to commit
++ * @c: UBIFS file-system description object
++ * @atomic: write atomically
++ *
++ * This function writes orph nodes for all the orphans to commit. On success,
++ * %0 is returned, otherwise a negative error code is returned.
++ */
++static int write_orph_nodes(struct ubifs_info *c, int atomic)
++{
++ int err;
++
++ while (c->cmt_orphans > 0) {
++ err = write_orph_node(c, atomic);
++ if (err)
++ return err;
++ }
++ if (atomic) {
++ int lnum;
++
++ /* Unmap any unused LEBs after consolidation */
++ lnum = c->ohead_lnum + 1;
++ for (lnum = c->ohead_lnum + 1; lnum <= c->orph_last; lnum++) {
++ err = ubifs_leb_unmap(c, lnum);
++ if (err)
++ return err;
++ }
++ }
++ return 0;
++}
++
++/**
++ * consolidate - consolidate the orphan area.
++ * @c: UBIFS file-system description object
++ *
++ * This function enables consolidation by putting all the orphans into the list
++ * to commit. The list is in the order that the orphans were added, and the
++ * LEBs are written atomically in order, so at no time can orphans be lost by
++ * an unclean unmount.
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++static int consolidate(struct ubifs_info *c)
++{
++ int tot_avail = tot_avail_orphs(c), err = 0;
++
++ spin_lock(&c->orphan_lock);
++ dbg_cmt("there is space for %d orphans and there are %d",
++ tot_avail, c->tot_orphans);
++ if (c->tot_orphans - c->new_orphans <= tot_avail) {
++ struct ubifs_orphan *orphan, **last;
++ int cnt = 0;
++
++ /* Change the cnext list to include all non-new orphans */
++ last = &c->orph_cnext;
++ list_for_each_entry(orphan, &c->orph_list, list) {
++ if (orphan->new)
++ continue;
++ *last = orphan;
++ last = &orphan->cnext;
++ cnt += 1;
++ }
++ *last = orphan->cnext;
++ ubifs_assert(cnt == c->tot_orphans - c->new_orphans);
++ c->cmt_orphans = cnt;
++ c->ohead_lnum = c->orph_first;
++ c->ohead_offs = 0;
++ } else {
++ /*
++ * We limit the number of orphans so that this should
++ * never happen.
++ */
++ ubifs_err("out of space in orphan area");
++ err = -EINVAL;
++ }
++ spin_unlock(&c->orphan_lock);
++ return err;
++}
++
++/**
++ * commit_orphans - commit orphans.
++ * @c: UBIFS file-system description object
++ *
++ * This function commits orphans to flash. On success, %0 is returned,
++ * otherwise a negative error code is returned.
++ */
++static int commit_orphans(struct ubifs_info *c)
++{
++ int avail, atomic = 0, err;
++
++ ubifs_assert(c->cmt_orphans > 0);
++ avail = avail_orphs(c);
++ if (avail < c->cmt_orphans) {
++ /* Not enough space to write new orphans, so consolidate */
++ err = consolidate(c);
++ if (err)
++ return err;
++ atomic = 1;
++ }
++ err = write_orph_nodes(c, atomic);
++ return err;
++}
++
++/**
++ * erase_deleted - erase the orphans marked for deletion.
++ * @c: UBIFS file-system description object
++ *
++ * During commit, the orphans being committed cannot be deleted, so they are
++ * marked for deletion and deleted by this function. Also, the recovery
++ * adds killed orphans to the deletion list, and therefore they are deleted
++ * here too.
++ */
++static void erase_deleted(struct ubifs_info *c)
++{
++ struct ubifs_orphan *orphan, *dnext;
++
++ spin_lock(&c->orphan_lock);
++ dnext = c->orph_dnext;
++ while (dnext) {
++ orphan = dnext;
++ dnext = orphan->dnext;
++ ubifs_assert(!orphan->new);
++ rb_erase(&orphan->rb, &c->orph_tree);
++ list_del(&orphan->list);
++ c->tot_orphans -= 1;
++ dbg_gen("deleting orphan ino %lu", orphan->inum);
++ kfree(orphan);
++ }
++ c->orph_dnext = NULL;
++ spin_unlock(&c->orphan_lock);
++}
++
++/**
++ * ubifs_orphan_end_commit - end commit of orphans.
++ * @c: UBIFS file-system description object
++ *
++ * End commit of orphans.
++ */
++int ubifs_orphan_end_commit(struct ubifs_info *c)
++{
++ int err;
++
++ if (c->cmt_orphans != 0) {
++ err = commit_orphans(c);
++ if (err)
++ return err;
++ }
++ erase_deleted(c);
++ err = dbg_check_orphans(c);
++ return err;
++}
++
++/**
++ * clear_orphans - erase all LEBs used for orphans.
++ * @c: UBIFS file-system description object
++ *
++ * If recovery is not required, then the orphans from the previous session
++ * are not needed. This function locates the LEBs used to record
++ * orphans, and un-maps them.
++ */
++static int clear_orphans(struct ubifs_info *c)
++{
++ int lnum, err;
++
++ for (lnum = c->orph_first; lnum <= c->orph_last; lnum++) {
++ err = ubifs_leb_unmap(c, lnum);
++ if (err)
++ return err;
++ }
++ c->ohead_lnum = c->orph_first;
++ c->ohead_offs = 0;
++ return 0;
++}
++
++/**
++ * insert_dead_orphan - insert an orphan.
++ * @c: UBIFS file-system description object
++ * @inum: orphan inode number
++ *
++ * This function is a helper to the 'do_kill_orphans()' function. The orphan
++ * must be kept until the next commit, so it is added to the rb-tree and the
++ * deletion list.
++ */
++static int insert_dead_orphan(struct ubifs_info *c, ino_t inum)
++{
++ struct ubifs_orphan *orphan, *o;
++ struct rb_node **p, *parent = NULL;
++
++ orphan = kzalloc(sizeof(struct ubifs_orphan), GFP_KERNEL);
++ if (!orphan)
++ return -ENOMEM;
++ orphan->inum = inum;
++
++ p = &c->orph_tree.rb_node;
++ while (*p) {
++ parent = *p;
++ o = rb_entry(parent, struct ubifs_orphan, rb);
++ if (inum < o->inum)
++ p = &(*p)->rb_left;
++ else if (inum > o->inum)
++ p = &(*p)->rb_right;
++ else {
++ /* Already added - no problem */
++ kfree(orphan);
++ return 0;
++ }
++ }
++ c->tot_orphans += 1;
++ rb_link_node(&orphan->rb, parent, p);
++ rb_insert_color(&orphan->rb, &c->orph_tree);
++ list_add_tail(&orphan->list, &c->orph_list);
++ orphan->dnext = c->orph_dnext;
++ c->orph_dnext = orphan;
++ dbg_mnt("ino %lu, new %d, tot %d",
++ inum, c->new_orphans, c->tot_orphans);
++ return 0;
++}
++
++/**
++ * do_kill_orphans - remove orphan inodes from the index.
++ * @c: UBIFS file-system description object
++ * @sleb: scanned LEB
++ * @last_cmt_no: cmt_no of last orph node read is passed and returned here
++ * @outofdate: whether the LEB is out of date is returned here
++ * @last_flagged: whether the end orph node is encountered
++ *
++ * This function is a helper to the 'kill_orphans()' function. It goes through
++ * every orphan node in a LEB and for every inode number recorded, removes
++ * all keys for that inode from the TNC.
++ */
++static int do_kill_orphans(struct ubifs_info *c, struct ubifs_scan_leb *sleb,
++ unsigned long long *last_cmt_no, int *outofdate,
++ int *last_flagged)
++{
++ struct ubifs_scan_node *snod;
++ struct ubifs_orph_node *orph;
++ unsigned long long cmt_no;
++ ino_t inum;
++ int i, n, err, first = 1;
++
++ list_for_each_entry(snod, &sleb->nodes, list) {
++ if (snod->type != UBIFS_ORPH_NODE) {
++ ubifs_err("invalid node type %d in orphan area at "
++ "%d:%d", snod->type, sleb->lnum, snod->offs);
++ dbg_dump_node(c, snod->node);
++ return -EINVAL;
++ }
++
++ orph = snod->node;
++
++ /* Check commit number */
++ cmt_no = le64_to_cpu(orph->cmt_no) & LLONG_MAX;
++ /*
++ * The commit number on the master node may be less, because
++ * of a failed commit. If there are several failed commits in a
++ * row, the commit number written on orph nodes will continue to
++ * increase (because the commit number is adjusted here) even
++ * though the commit number on the master node stays the same
++ * because the master node has not been re-written.
++ */
++ if (cmt_no > c->cmt_no)
++ c->cmt_no = cmt_no;
++ if (cmt_no < *last_cmt_no && *last_flagged) {
++ /*
++ * The last orph node had a higher commit number and was
++ * flagged as the last written for that commit number.
++ * That makes this orph node, out of date.
++ */
++ if (!first) {
++ ubifs_err("out of order commit number %llu in "
++ "orphan node at %d:%d",
++ cmt_no, sleb->lnum, snod->offs);
++ dbg_dump_node(c, snod->node);
++ return -EINVAL;
++ }
++ dbg_rcvry("out of date LEB %d", sleb->lnum);
++ *outofdate = 1;
++ return 0;
++ }
++
++ if (first)
++ first = 0;
++
++ n = (le32_to_cpu(orph->ch.len) - UBIFS_ORPH_NODE_SZ) >> 3;
++ for (i = 0; i < n; i++) {
++ inum = le64_to_cpu(orph->inos[i]);
++ dbg_rcvry("deleting orphaned inode %lu", inum);
++ err = ubifs_tnc_remove_ino(c, inum);
++ if (err)
++ return err;
++ err = insert_dead_orphan(c, inum);
++ if (err)
++ return err;
++ }
++
++ *last_cmt_no = cmt_no;
++ if (le64_to_cpu(orph->cmt_no) & (1ULL << 63)) {
++ dbg_rcvry("last orph node for commit %llu at %d:%d",
++ cmt_no, sleb->lnum, snod->offs);
++ *last_flagged = 1;
++ } else
++ *last_flagged = 0;
++ }
++
++ return 0;
++}
++
++/**
++ * kill_orphans - remove all orphan inodes from the index.
++ * @c: UBIFS file-system description object
++ *
++ * If recovery is required, then orphan inodes recorded during the previous
++ * session (which ended with an unclean unmount) must be deleted from the index.
++ * This is done by updating the TNC, but since the index is not updated until
++ * the next commit, the LEBs where the orphan information is recorded are not
++ * erased until the next commit.
++ */
++static int kill_orphans(struct ubifs_info *c)
++{
++ unsigned long long last_cmt_no = 0;
++ int lnum, err = 0, outofdate = 0, last_flagged = 0;
++
++ c->ohead_lnum = c->orph_first;
++ c->ohead_offs = 0;
++ /* Check no-orphans flag and skip this if no orphans */
++ if (c->no_orphs) {
++ dbg_rcvry("no orphans");
++ return 0;
++ }
++ /*
++ * Orph nodes always start at c->orph_first and are written to each
++ * successive LEB in turn. Generally unused LEBs will have been unmapped
++ * but may contain out of date orph nodes if the unmap didn't go
++ * through. In addition, the last orph node written for each commit is
++ * marked (top bit of orph->cmt_no is set to 1). It is possible that
++ * there are orph nodes from the next commit (i.e. the commit did not
++ * complete successfully). In that case, no orphans will have been lost
++ * due to the way that orphans are written, and any orphans added will
++ * be valid orphans anyway and so can be deleted.
++ */
++ for (lnum = c->orph_first; lnum <= c->orph_last; lnum++) {
++ struct ubifs_scan_leb *sleb;
++
++ dbg_rcvry("LEB %d", lnum);
++ sleb = ubifs_scan(c, lnum, 0, c->sbuf);
++ if (IS_ERR(sleb)) {
++ sleb = ubifs_recover_leb(c, lnum, 0, c->sbuf, 0);
++ if (IS_ERR(sleb)) {
++ err = PTR_ERR(sleb);
++ break;
++ }
++ }
++ err = do_kill_orphans(c, sleb, &last_cmt_no, &outofdate,
++ &last_flagged);
++ if (err || outofdate) {
++ ubifs_scan_destroy(sleb);
++ break;
++ }
++ if (sleb->endpt) {
++ c->ohead_lnum = lnum;
++ c->ohead_offs = sleb->endpt;
++ }
++ ubifs_scan_destroy(sleb);
++ }
++ return err;
++}
++
++/**
++ * ubifs_mount_orphans - delete orphan inodes and erase LEBs that recorded them.
++ * @c: UBIFS file-system description object
++ * @unclean: indicates recovery from unclean unmount
++ * @read_only: indicates read only mount
++ *
++ * This function is called when mounting to erase orphans from the previous
++ * session. If UBIFS was not unmounted cleanly, then the inodes recorded as
++ * orphans are deleted.
++ */
++int ubifs_mount_orphans(struct ubifs_info *c, int unclean, int read_only)
++{
++ int err = 0;
++
++ c->max_orphans = tot_avail_orphs(c);
++
++ if (!read_only) {
++ c->orph_buf = vmalloc(c->leb_size);
++ if (!c->orph_buf)
++ return -ENOMEM;
++ }
++
++ if (unclean)
++ err = kill_orphans(c);
++ else if (!read_only)
++ err = clear_orphans(c);
++
++ return err;
++}
++
++#ifdef CONFIG_UBIFS_FS_DEBUG
++
++struct check_orphan {
++ struct rb_node rb;
++ ino_t inum;
++};
++
++struct check_info {
++ unsigned long last_ino;
++ unsigned long tot_inos;
++ unsigned long missing;
++ unsigned long long leaf_cnt;
++ struct ubifs_ino_node *node;
++ struct rb_root root;
++};
++
++static int dbg_find_orphan(struct ubifs_info *c, ino_t inum)
++{
++ struct ubifs_orphan *o;
++ struct rb_node *p;
++
++ spin_lock(&c->orphan_lock);
++ p = c->orph_tree.rb_node;
++ while (p) {
++ o = rb_entry(p, struct ubifs_orphan, rb);
++ if (inum < o->inum)
++ p = p->rb_left;
++ else if (inum > o->inum)
++ p = p->rb_right;
++ else {
++ spin_unlock(&c->orphan_lock);
++ return 1;
++ }
++ }
++ spin_unlock(&c->orphan_lock);
++ return 0;
++}
++
++static int dbg_ins_check_orphan(struct rb_root *root, ino_t inum)
++{
++ struct check_orphan *orphan, *o;
++ struct rb_node **p, *parent = NULL;
++
++ orphan = kzalloc(sizeof(struct check_orphan), GFP_NOFS);
++ if (!orphan)
++ return -ENOMEM;
++ orphan->inum = inum;
++
++ p = &root->rb_node;
++ while (*p) {
++ parent = *p;
++ o = rb_entry(parent, struct check_orphan, rb);
++ if (inum < o->inum)
++ p = &(*p)->rb_left;
++ else if (inum > o->inum)
++ p = &(*p)->rb_right;
++ else {
++ kfree(orphan);
++ return 0;
++ }
++ }
++ rb_link_node(&orphan->rb, parent, p);
++ rb_insert_color(&orphan->rb, root);
++ return 0;
++}
++
++static int dbg_find_check_orphan(struct rb_root *root, ino_t inum)
++{
++ struct check_orphan *o;
++ struct rb_node *p;
++
++ p = root->rb_node;
++ while (p) {
++ o = rb_entry(p, struct check_orphan, rb);
++ if (inum < o->inum)
++ p = p->rb_left;
++ else if (inum > o->inum)
++ p = p->rb_right;
++ else
++ return 1;
++ }
++ return 0;
++}
++
++static void dbg_free_check_tree(struct rb_root *root)
++{
++ struct rb_node *this = root->rb_node;
++ struct check_orphan *o;
++
++ while (this) {
++ if (this->rb_left) {
++ this = this->rb_left;
++ continue;
++ } else if (this->rb_right) {
++ this = this->rb_right;
++ continue;
++ }
++ o = rb_entry(this, struct check_orphan, rb);
++ this = rb_parent(this);
++ if (this) {
++ if (this->rb_left == &o->rb)
++ this->rb_left = NULL;
++ else
++ this->rb_right = NULL;
++ }
++ kfree(o);
++ }
++}
++
++static int dbg_orphan_check(struct ubifs_info *c, struct ubifs_zbranch *zbr,
++ void *priv)
++{
++ struct check_info *ci = priv;
++ ino_t inum;
++ int err;
++
++ inum = key_inum(c, &zbr->key);
++ if (inum != ci->last_ino) {
++ /* Lowest node type is the inode node, so it comes first */
++ if (key_type(c, &zbr->key) != UBIFS_INO_KEY)
++ ubifs_err("found orphan node ino %lu, type %d", inum,
++ key_type(c, &zbr->key));
++ ci->last_ino = inum;
++ ci->tot_inos += 1;
++ err = ubifs_tnc_read_node(c, zbr, ci->node);
++ if (err) {
++ ubifs_err("node read failed, error %d", err);
++ return err;
++ }
++ if (ci->node->nlink == 0)
++ /* Must be recorded as an orphan */
++ if (!dbg_find_check_orphan(&ci->root, inum) &&
++ !dbg_find_orphan(c, inum)) {
++ ubifs_err("missing orphan, ino %lu", inum);
++ ci->missing += 1;
++ }
++ }
++ ci->leaf_cnt += 1;
++ return 0;
++}
++
++static int dbg_read_orphans(struct check_info *ci, struct ubifs_scan_leb *sleb)
++{
++ struct ubifs_scan_node *snod;
++ struct ubifs_orph_node *orph;
++ ino_t inum;
++ int i, n, err;
++
++ list_for_each_entry(snod, &sleb->nodes, list) {
++ cond_resched();
++ if (snod->type != UBIFS_ORPH_NODE)
++ continue;
++ orph = snod->node;
++ n = (le32_to_cpu(orph->ch.len) - UBIFS_ORPH_NODE_SZ) >> 3;
++ for (i = 0; i < n; i++) {
++ inum = le64_to_cpu(orph->inos[i]);
++ err = dbg_ins_check_orphan(&ci->root, inum);
++ if (err)
++ return err;
++ }
++ }
++ return 0;
++}
++
++static int dbg_scan_orphans(struct ubifs_info *c, struct check_info *ci)
++{
++ int lnum, err = 0;
++
++ /* Check no-orphans flag and skip this if no orphans */
++ if (c->no_orphs)
++ return 0;
++
++ for (lnum = c->orph_first; lnum <= c->orph_last; lnum++) {
++ struct ubifs_scan_leb *sleb;
++
++ sleb = ubifs_scan(c, lnum, 0, c->dbg_buf);
++ if (IS_ERR(sleb)) {
++ err = PTR_ERR(sleb);
++ break;
++ }
++
++ err = dbg_read_orphans(ci, sleb);
++ ubifs_scan_destroy(sleb);
++ if (err)
++ break;
++ }
++
++ return err;
++}
++
++static int dbg_check_orphans(struct ubifs_info *c)
++{
++ struct check_info ci;
++ int err;
++
++ if (!(ubifs_chk_flags & UBIFS_CHK_ORPH))
++ return 0;
++
++ ci.last_ino = 0;
++ ci.tot_inos = 0;
++ ci.missing = 0;
++ ci.leaf_cnt = 0;
++ ci.root = RB_ROOT;
++ ci.node = kmalloc(UBIFS_MAX_INO_NODE_SZ, GFP_NOFS);
++ if (!ci.node) {
++ ubifs_err("out of memory");
++ return -ENOMEM;
++ }
++
++ err = dbg_scan_orphans(c, &ci);
++ if (err)
++ goto out;
++
++ err = dbg_walk_index(c, &dbg_orphan_check, NULL, &ci);
++ if (err) {
++ ubifs_err("cannot scan TNC, error %d", err);
++ goto out;
++ }
++
++ if (ci.missing) {
++ ubifs_err("%lu missing orphan(s)", ci.missing);
++ err = -EINVAL;
++ goto out;
++ }
++
++ dbg_cmt("last inode number is %lu", ci.last_ino);
++ dbg_cmt("total number of inodes is %lu", ci.tot_inos);
++ dbg_cmt("total number of leaf nodes is %llu", ci.leaf_cnt);
++
++out:
++ dbg_free_check_tree(&ci.root);
++ kfree(ci.node);
++ return err;
++}
++
++#endif /* CONFIG_UBIFS_FS_DEBUG */
+diff --exclude=.git -urN linux-2.6.25.6/fs/ubifs/recovery.c avr32-2.6/fs/ubifs/recovery.c
+--- linux-2.6.25.6/fs/ubifs/recovery.c 1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/fs/ubifs/recovery.c 2008-06-12 15:09:45.475816115 +0200
+@@ -0,0 +1,1537 @@
++/*
++ * This file is part of UBIFS.
++ *
++ * Copyright (C) 2006-2008 Nokia Corporation
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published by
++ * the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but WITHOUT
++ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
++ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
++ * more details.
++ *
++ * You should have received a copy of the GNU General Public License along with
++ * this program; if not, write to the Free Software Foundation, Inc., 51
++ * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
++ *
++ * Authors: Adrian Hunter
++ * Artem Bityutskiy (Битюцкий Артём)
++ */
++
++/*
++ * This file implements functions needed to recover from unclean un-mounts.
++ * When UBIFS is mounted, it checks a flag on the master node to determine if
++ * an un-mount was completed sucessfully. If not, the process of mounting
++ * incorparates additional checking and fixing of on-flash data structures.
++ * UBIFS always cleans away all remnants of an unclean un-mount, so that
++ * errors do not accumulate. However UBIFS defers recovery if it is mounted
++ * read-only, and the flash is not modified in that case.
++ */
++
++#include <linux/crc32.h>
++#include "ubifs.h"
++
++/**
++ * is_empty - determine whether a buffer is empty (contains all 0xff).
++ * @buf: buffer to clean
++ * @len: length of buffer
++ *
++ * This function returns %1 if the buffer is empty (contains all 0xff) otherwise
++ * %0 is returned.
++ */
++static int is_empty(void *buf, int len)
++{
++ uint8_t *p = buf;
++ int i;
++
++ for (i = 0; i < len; i++)
++ if (*p++ != 0xff)
++ return 0;
++ return 1;
++}
++
++/**
++ * get_master_node - get the last valid master node allowing for corruption.
++ * @c: UBIFS file-system description object
++ * @lnum: LEB number
++ * @pbuf: buffer containing the LEB read, is returned here
++ * @mst: master node, if found, is returned here
++ * @cor: corruption, if found, is returned here
++ *
++ * This function allocates a buffer, reads the LEB into it, and finds and
++ * returns the last valid master node allowing for one area of corruption.
++ * The corrupt area, if there is one, must be consistent with the assumption
++ * that it is the result of an unclean unmount while the master node was being
++ * written. Under those circumstances, it is valid to use the previously written
++ * master node.
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++static int get_master_node(const struct ubifs_info *c, int lnum, void **pbuf,
++ struct ubifs_mst_node **mst, void **cor)
++{
++ const int sz = c->mst_node_alsz;
++ int err, offs, len;
++ void *sbuf, *buf;
++
++ sbuf = vmalloc(c->leb_size);
++ if (!sbuf)
++ return -ENOMEM;
++
++ err = ubi_read(c->ubi, lnum, sbuf, 0, c->leb_size);
++ if (err && err != -EBADMSG)
++ goto out_free;
++
++ /* Find the first position that is definitely not a node */
++ offs = 0;
++ buf = sbuf;
++ len = c->leb_size;
++ while (offs + UBIFS_MST_NODE_SZ <= c->leb_size) {
++ struct ubifs_ch *ch = buf;
++
++ if (le32_to_cpu(ch->magic) != UBIFS_NODE_MAGIC)
++ break;
++ offs += sz;
++ buf += sz;
++ len -= sz;
++ }
++ /* See if there was a valid master node before that */
++ if (offs) {
++ int ret;
++
++ offs -= sz;
++ buf -= sz;
++ len += sz;
++ ret = ubifs_scan_a_node(c, buf, len, lnum, offs, 1);
++ if (ret != SCANNED_A_NODE && offs) {
++ /* Could have been corruption so check one place back */
++ offs -= sz;
++ buf -= sz;
++ len += sz;
++ ret = ubifs_scan_a_node(c, buf, len, lnum, offs, 1);
++ if (ret != SCANNED_A_NODE)
++ /*
++ * We accept only one area of corruption because
++ * we are assuming that it was caused while
++ * trying to write a master node.
++ */
++ goto out_err;
++ }
++ if (ret == SCANNED_A_NODE) {
++ struct ubifs_ch *ch = buf;
++
++ if (ch->node_type != UBIFS_MST_NODE)
++ goto out_err;
++ dbg_rcvry("found a master node at %d:%d", lnum, offs);
++ *mst = buf;
++ offs += sz;
++ buf += sz;
++ len -= sz;
++ }
++ }
++ /* Check for corruption */
++ if (offs < c->leb_size) {
++ if (!is_empty(buf, min_t(int, len, sz))) {
++ *cor = buf;
++ dbg_rcvry("found corruption at %d:%d", lnum, offs);
++ }
++ offs += sz;
++ buf += sz;
++ len -= sz;
++ }
++ /* Check remaining empty space */
++ if (offs < c->leb_size)
++ if (!is_empty(buf, len))
++ goto out_err;
++ *pbuf = sbuf;
++ return 0;
++
++out_err:
++ err = -EINVAL;
++out_free:
++ vfree(sbuf);
++ *mst = NULL;
++ *cor = NULL;
++ return err;
++}
++
++/**
++ * write_rcvrd_mst_node - write recovered master node.
++ * @c: UBIFS file-system description object
++ * @mst: master node
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++static int write_rcvrd_mst_node(struct ubifs_info *c,
++ struct ubifs_mst_node *mst)
++{
++ int err = 0, lnum = UBIFS_MST_LNUM, sz = c->mst_node_alsz;
++ uint32_t save_flags;
++
++ dbg_rcvry("recovery");
++
++ save_flags = mst->flags;
++ mst->flags = cpu_to_le32(le32_to_cpu(mst->flags) | UBIFS_MST_RCVRY);
++
++ ubifs_prepare_node(c, mst, UBIFS_MST_NODE_SZ, 1);
++ err = ubi_leb_change(c->ubi, lnum, mst, sz, UBI_SHORTTERM);
++ if (err)
++ goto out;
++ err = ubi_leb_change(c->ubi, lnum + 1, mst, sz, UBI_SHORTTERM);
++ if (err)
++ goto out;
++out:
++ mst->flags = save_flags;
++ return err;
++}
++
++/**
++ * ubifs_recover_master_node - recover the master node.
++ * @c: UBIFS file-system description object
++ *
++ * This function recovers the master node from corruption that may occur due to
++ * an unclean unmount.
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++int ubifs_recover_master_node(struct ubifs_info *c)
++{
++ void *buf1 = NULL, *buf2 = NULL, *cor1 = NULL, *cor2 = NULL;
++ struct ubifs_mst_node *mst1 = NULL, *mst2 = NULL, *mst;
++ const int sz = c->mst_node_alsz;
++ int err, offs1, offs2;
++
++ dbg_rcvry("recovery");
++
++ err = get_master_node(c, UBIFS_MST_LNUM, &buf1, &mst1, &cor1);
++ if (err)
++ goto out_free;
++
++ err = get_master_node(c, UBIFS_MST_LNUM + 1, &buf2, &mst2, &cor2);
++ if (err)
++ goto out_free;
++
++ if (mst1) {
++ offs1 = (void *)mst1 - buf1;
++ if ((le32_to_cpu(mst1->flags) & UBIFS_MST_RCVRY) &&
++ (offs1 == 0 && !cor1)) {
++ /*
++ * mst1 was written by recovery at offset 0 with no
++ * corruption.
++ */
++ dbg_rcvry("recovery recovery");
++ mst = mst1;
++ } else if (mst2) {
++ offs2 = (void *)mst2 - buf2;
++ if (offs1 == offs2) {
++ /* Same offset, so must be the same */
++ if (memcmp((void *)mst1 + UBIFS_CH_SZ,
++ (void *)mst2 + UBIFS_CH_SZ,
++ UBIFS_MST_NODE_SZ - UBIFS_CH_SZ))
++ goto out_err;
++ mst = mst1;
++ } else if (offs2 + sz == offs1) {
++ /* 1st LEB was written, 2nd was not */
++ if (cor1)
++ goto out_err;
++ mst = mst1;
++ } else if (offs1 == 0 && offs2 + sz >= c->leb_size) {
++ /* 1st LEB was unmapped and written, 2nd not */
++ if (cor1)
++ goto out_err;
++ mst = mst1;
++ } else
++ goto out_err;
++ } else {
++ /*
++ * 2nd LEB was unmapped and about to be written, so
++ * there must be only one master node in the first LEB
++ * and no corruption.
++ */
++ if (offs1 != 0 || cor1)
++ goto out_err;
++ mst = mst1;
++ }
++ } else {
++ if (!mst2)
++ goto out_err;
++ /*
++ * 1st LEB was unmapped and about to be written, so there must
++ * be no room left in 2nd LEB.
++ */
++ offs2 = (void *)mst2 - buf2;
++ if (offs2 + sz + sz <= c->leb_size)
++ goto out_err;
++ mst = mst2;
++ }
++
++ dbg_rcvry("recovered master node from LEB %d",
++ (mst == mst1 ? UBIFS_MST_LNUM : UBIFS_MST_LNUM + 1));
++
++ memcpy(c->mst_node, mst, UBIFS_MST_NODE_SZ);
++
++ if ((c->vfs_sb->s_flags & MS_RDONLY)) {
++ /* Read-only mode. Keep a copy for switching to rw mode */
++ c->rcvrd_mst_node = kmalloc(sz, GFP_KERNEL);
++ if (!c->rcvrd_mst_node) {
++ err = -ENOMEM;
++ goto out_free;
++ }
++ memcpy(c->rcvrd_mst_node, c->mst_node, UBIFS_MST_NODE_SZ);
++ } else {
++ /* Write the recovered master node */
++ c->max_sqnum = le64_to_cpu(mst->ch.sqnum) - 1;
++ err = write_rcvrd_mst_node(c, c->mst_node);
++ if (err)
++ goto out_free;
++ }
++
++ vfree(buf2);
++ vfree(buf1);
++
++ return 0;
++
++out_err:
++ err = -EINVAL;
++out_free:
++ ubifs_err("failed to recover master node");
++ if (mst1) {
++ dbg_err("dumping first master node");
++ dbg_dump_node(c, mst1);
++ }
++ if (mst2) {
++ dbg_err("dumping second master node");
++ dbg_dump_node(c, mst2);
++ }
++ vfree(buf2);
++ vfree(buf1);
++ return err;
++}
++
++/**
++ * ubifs_write_rcvrd_mst_node - write the recovered master node.
++ * @c: UBIFS file-system description object
++ *
++ * This function writes the master node that was recovered during mounting in
++ * read-only mode and must now be written because we are remounting rw.
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++int ubifs_write_rcvrd_mst_node(struct ubifs_info *c)
++{
++ int err;
++
++ if (!c->rcvrd_mst_node)
++ return 0;
++ c->rcvrd_mst_node->flags |= cpu_to_le32(UBIFS_MST_DIRTY);
++ c->mst_node->flags |= cpu_to_le32(UBIFS_MST_DIRTY);
++ err = write_rcvrd_mst_node(c, c->rcvrd_mst_node);
++ if (err)
++ return err;
++ kfree(c->rcvrd_mst_node);
++ c->rcvrd_mst_node = NULL;
++ return 0;
++}
++
++/**
++ * is_last_write - determine if an offset was in the last write to a LEB.
++ * @c: UBIFS file-system description object
++ * @buf: buffer to check
++ * @offs: offset to check
++ *
++ * This function returns %1 if @offs was in the last write to the LEB whose data
++ * is in @buf, otherwise %0 is returned. The determination is made by checking
++ * for subsequent empty space starting from the next min_io_size boundary (or a
++ * bit less than the common header size if min_io_size is one).
++ */
++static int is_last_write(const struct ubifs_info *c, void *buf, int offs)
++{
++ int empty_offs;
++ int check_len;
++ uint8_t *p;
++
++ if (c->min_io_size == 1) {
++ check_len = c->leb_size - offs;
++ p = buf + check_len;
++ for (; check_len > 0; check_len--)
++ if (*--p != 0xff)
++ break;
++ /*
++ * 'check_len' is the size of the corruption which cannot be
++ * more than the size of 1 node if it was caused by an unclean
++ * unmount.
++ */
++ if (check_len > UBIFS_MAX_NODE_SZ)
++ return 0;
++ return 1;
++ }
++
++ /*
++ * Round up to the next c->min_io_size boundary i.e. 'offs' is in the
++ * last wbuf written. After that should be empty space.
++ */
++ empty_offs = ALIGN(offs + 1, c->min_io_size);
++ check_len = c->leb_size - empty_offs;
++ p = buf + empty_offs - offs;
++
++ for (; check_len > 0; check_len--)
++ if (*p++ != 0xff)
++ return 0;
++ return 1;
++}
++
++/**
++ * clean_buf - clean the data from an LEB sitting in a buffer.
++ * @c: UBIFS file-system description object
++ * @buf: buffer to clean
++ * @lnum: LEB number to clean
++ * @offs: offset from which to clean
++ * @len: length of buffer
++ *
++ * This function pads up to the next min_io_size boundary (if there is one) and
++ * sets empty space to all 0xff. @buf, @offs and @len are updated to the next
++ * min_io_size boundary (if there is one).
++ */
++static void clean_buf(const struct ubifs_info *c, void **buf, int lnum,
++ int *offs, int *len)
++{
++ int empty_offs, pad_len;
++
++ lnum = lnum;
++ dbg_rcvry("cleaning corruption at %d:%d", lnum, *offs);
++
++ if (c->min_io_size == 1) {
++ memset(*buf, 0xff, c->leb_size - *offs);
++ return;
++ }
++
++ ubifs_assert(!(*offs & 7));
++ empty_offs = ALIGN(*offs, c->min_io_size);
++ pad_len = empty_offs - *offs;
++ ubifs_pad(c, *buf, pad_len);
++ *offs += pad_len;
++ *buf += pad_len;
++ *len -= pad_len;
++ memset(*buf, 0xff, c->leb_size - empty_offs);
++}
++
++/**
++ * no_more_nodes - determine if there are no more nodes in a buffer.
++ * @c: UBIFS file-system description object
++ * @buf: buffer to check
++ * @len: length of buffer
++ * @lnum: LEB number of the LEB from which @buf was read
++ * @offs: offset from which @buf was read
++ *
++ * This function scans @buf for more nodes and returns %0 is a node is found and
++ * %1 if no more nodes are found.
++ */
++static int no_more_nodes(const struct ubifs_info *c, void *buf, int len,
++ int lnum, int offs)
++{
++ int skip, next_offs = 0;
++
++ if (len > UBIFS_DATA_NODE_SZ) {
++ struct ubifs_ch *ch = buf;
++ int dlen = le32_to_cpu(ch->len);
++
++ if (ch->node_type == UBIFS_DATA_NODE && dlen >= UBIFS_CH_SZ &&
++ dlen <= UBIFS_MAX_DATA_NODE_SZ)
++ /* The corrupt node looks like a data node */
++ next_offs = ALIGN(offs + dlen, 8);
++ }
++
++ if (c->min_io_size == 1)
++ skip = 8;
++ else
++ skip = ALIGN(offs + 1, c->min_io_size) - offs;
++
++ offs += skip;
++ buf += skip;
++ len -= skip;
++ while (len > 8) {
++ struct ubifs_ch *ch = buf;
++ uint32_t magic = le32_to_cpu(ch->magic);
++ int ret;
++
++ if (magic == UBIFS_NODE_MAGIC) {
++ ret = ubifs_scan_a_node(c, buf, len, lnum, offs, 1);
++ if (ret == SCANNED_A_NODE || ret > 0) {
++ /*
++ * There is a small chance this is just data in
++ * a data node, so check that possibility. e.g.
++ * this is part of a file that itself contains
++ * a UBIFS image.
++ */
++ if (next_offs && offs + le32_to_cpu(ch->len) <=
++ next_offs)
++ continue;
++ dbg_rcvry("unexpected node at %d:%d", lnum,
++ offs);
++ return 0;
++ }
++ }
++ offs += 8;
++ buf += 8;
++ len -= 8;
++ }
++ return 1;
++}
++
++/**
++ * fix_unclean_leb - fix an unclean LEB.
++ * @c: UBIFS file-system description object
++ * @sleb: scanned LEB information
++ * @start: offset where scan started
++ */
++static int fix_unclean_leb(struct ubifs_info *c, struct ubifs_scan_leb *sleb,
++ int start)
++{
++ int lnum = sleb->lnum, endpt = start;
++
++ /* Get the end offset of the last node we are keeping */
++ if (!list_empty(&sleb->nodes)) {
++ struct ubifs_scan_node *snod;
++
++ snod = list_entry(sleb->nodes.prev,
++ struct ubifs_scan_node, list);
++ endpt = snod->offs + snod->len;
++ }
++
++ if ((c->vfs_sb->s_flags & MS_RDONLY) && !c->remounting_rw) {
++ /* Add to recovery list */
++ struct ubifs_unclean_leb *ucleb;
++
++ dbg_rcvry("need to fix LEB %d start %d endpt %d",
++ lnum, start, sleb->endpt);
++ ucleb = kzalloc(sizeof(struct ubifs_unclean_leb), GFP_NOFS);
++ if (!ucleb)
++ return -ENOMEM;
++ ucleb->lnum = lnum;
++ ucleb->endpt = endpt;
++ list_add_tail(&ucleb->list, &c->unclean_leb_list);
++ } else {
++ /* Write the fixed LEB back to flash */
++ int err;
++
++ dbg_rcvry("fixing LEB %d start %d endpt %d",
++ lnum, start, sleb->endpt);
++ if (endpt == 0) {
++ err = ubifs_leb_unmap(c, lnum);
++ if (err)
++ return err;
++ } else {
++ int len = ALIGN(endpt, c->min_io_size);
++
++ if (start) {
++ err = ubi_read(c->ubi, lnum, sleb->buf, 0,
++ start);
++ if (err)
++ return err;
++ }
++ /* Pad to min_io_size */
++ if (len > endpt) {
++ int pad_len = len - ALIGN(endpt, 8);
++
++ if (pad_len > 0) {
++ void *buf = sleb->buf + len - pad_len;
++
++ ubifs_pad(c, buf, pad_len);
++ }
++ }
++ err = ubi_leb_change(c->ubi, lnum, sleb->buf, len,
++ UBI_UNKNOWN);
++ if (err)
++ return err;
++ }
++ }
++ return 0;
++}
++
++/**
++ * drop_incomplete_group - drop nodes from an incomplete group.
++ * @sleb: scanned LEB information
++ * @offs: offset of dropped nodes is returned here
++ *
++ * This function returns %1 if nodes are dropped and %0 otherwise.
++ */
++static int drop_incomplete_group(struct ubifs_scan_leb *sleb, int *offs)
++{
++ int dropped = 0;
++
++ while (!list_empty(&sleb->nodes)) {
++ struct ubifs_scan_node *snod;
++ struct ubifs_ch *ch;
++
++ snod = list_entry(sleb->nodes.prev, struct ubifs_scan_node,
++ list);
++ ch = snod->node;
++ if (ch->group_type != UBIFS_IN_NODE_GROUP)
++ return dropped;
++ dbg_rcvry("dropping node at %d:%d", sleb->lnum, snod->offs);
++ *offs = snod->offs;
++ list_del(&snod->list);
++ kfree(snod);
++ sleb->nodes_cnt -= 1;
++ dropped = 1;
++ }
++ return dropped;
++}
++
++/**
++ * ubifs_recover_leb - scan and recover a LEB.
++ * @c: UBIFS file-system description object
++ * @lnum: LEB number
++ * @offs: offset
++ * @sbuf: LEB-sized buffer to use
++ * @grouped: nodes may be grouped for recovery
++ *
++ * This function does a scan of a LEB, but caters for errors that might have
++ * been caused by the unclean unmount from which we are attempting to recover.
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++struct ubifs_scan_leb *ubifs_recover_leb(struct ubifs_info *c, int lnum,
++ int offs, void *sbuf, int grouped)
++{
++ int err, len = c->leb_size - offs, need_clean = 0, quiet = 1;
++ int empty_chkd = 0, start = offs;
++ struct ubifs_scan_leb *sleb;
++ void *buf = sbuf + offs;
++
++ dbg_rcvry("%d:%d", lnum, offs);
++
++ sleb = ubifs_start_scan(c, lnum, offs, sbuf);
++ if (IS_ERR(sleb))
++ return sleb;
++
++ if (sleb->ecc)
++ need_clean = 1;
++
++ while (len >= 8) {
++ int ret;
++
++ dbg_scan("look at LEB %d:%d (%d bytes left)",
++ lnum, offs, len);
++
++ cond_resched();
++
++ /*
++ * Scan quietly until there is an error from which we cannot
++ * recover
++ */
++ ret = ubifs_scan_a_node(c, buf, len, lnum, offs, quiet);
++
++ if (ret == SCANNED_A_NODE) {
++ /* A valid node, and not a padding node */
++ struct ubifs_ch *ch = buf;
++ int node_len;
++
++ err = ubifs_add_snod(c, sleb, buf, offs);
++ if (err)
++ goto error;
++ node_len = ALIGN(le32_to_cpu(ch->len), 8);
++ offs += node_len;
++ buf += node_len;
++ len -= node_len;
++ continue;
++ }
++
++ if (ret > 0) {
++ /* Padding bytes or a valid padding node */
++ offs += ret;
++ buf += ret;
++ len -= ret;
++ continue;
++ }
++
++ if (ret == SCANNED_EMPTY_SPACE) {
++ if (!is_empty(buf, len)) {
++ if (!is_last_write(c, buf, offs))
++ break;
++ clean_buf(c, &buf, lnum, &offs, &len);
++ need_clean = 1;
++ }
++ empty_chkd = 1;
++ break;
++ }
++
++ if (ret == SCANNED_GARBAGE || ret == SCANNED_A_BAD_PAD_NODE)
++ if (is_last_write(c, buf, offs)) {
++ clean_buf(c, &buf, lnum, &offs, &len);
++ need_clean = 1;
++ empty_chkd = 1;
++ break;
++ }
++
++ if (ret == SCANNED_A_CORRUPT_NODE)
++ if (no_more_nodes(c, buf, len, lnum, offs)) {
++ clean_buf(c, &buf, lnum, &offs, &len);
++ need_clean = 1;
++ empty_chkd = 1;
++ break;
++ }
++
++ if (quiet) {
++ /* Redo the last scan but noisily */
++ quiet = 0;
++ continue;
++ }
++
++ switch (ret) {
++ case SCANNED_GARBAGE:
++ dbg_err("garbage");
++ goto corrupted;
++ case SCANNED_A_CORRUPT_NODE:
++ case SCANNED_A_BAD_PAD_NODE:
++ dbg_err("bad node");
++ goto corrupted;
++ default:
++ dbg_err("unknown");
++ goto corrupted;
++ }
++ }
++
++ if (!empty_chkd && !is_empty(buf, len)) {
++ if (is_last_write(c, buf, offs)) {
++ clean_buf(c, &buf, lnum, &offs, &len);
++ need_clean = 1;
++ } else {
++ ubifs_err("corrupt empty space at LEB %d:%d",
++ lnum, offs);
++ goto corrupted;
++ }
++ }
++
++ /* Drop nodes from incomplete group */
++ if (grouped && drop_incomplete_group(sleb, &offs)) {
++ buf = sbuf + offs;
++ len = c->leb_size - offs;
++ clean_buf(c, &buf, lnum, &offs, &len);
++ need_clean = 1;
++ }
++
++ if (offs % c->min_io_size) {
++ clean_buf(c, &buf, lnum, &offs, &len);
++ need_clean = 1;
++ }
++
++ ubifs_end_scan(c, sleb, lnum, offs);
++
++ if (need_clean) {
++ err = fix_unclean_leb(c, sleb, start);
++ if (err)
++ goto error;
++ }
++
++ return sleb;
++
++corrupted:
++ ubifs_scanned_corruption(c, lnum, offs, buf);
++ err = -EUCLEAN;
++error:
++ ubifs_err("LEB %d scanning failed", lnum);
++ ubifs_scan_destroy(sleb);
++ return ERR_PTR(err);
++}
++
++/**
++ * get_cs_sqnum - get commit start sequence number.
++ * @c: UBIFS file-system description object
++ * @lnum: LEB number of commit start node
++ * @offs: offset of commit start node
++ * @cs_sqnum: commit start sequence number is returned here
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++static int get_cs_sqnum(struct ubifs_info *c, int lnum, int offs,
++ unsigned long long *cs_sqnum)
++{
++ struct ubifs_cs_node *cs_node = NULL;
++ int err, ret;
++
++ dbg_rcvry("at %d:%d", lnum, offs);
++ cs_node = kmalloc(UBIFS_CS_NODE_SZ, GFP_KERNEL);
++ if (!cs_node)
++ return -ENOMEM;
++ if (c->leb_size - offs < UBIFS_CS_NODE_SZ)
++ goto out_err;
++ err = ubi_read(c->ubi, lnum, (void *)cs_node, offs, UBIFS_CS_NODE_SZ);
++ if (err && err != -EBADMSG)
++ goto out_free;
++ ret = ubifs_scan_a_node(c, cs_node, UBIFS_CS_NODE_SZ, lnum, offs, 0);
++ if (ret != SCANNED_A_NODE) {
++ dbg_err("Not a valid node");
++ goto out_err;
++ }
++ if (cs_node->ch.node_type != UBIFS_CS_NODE) {
++ dbg_err("Node a CS node, type is %d", cs_node->ch.node_type);
++ goto out_err;
++ }
++ if (le64_to_cpu(cs_node->cmt_no) != c->cmt_no) {
++ dbg_err("CS node cmt_no %llu != current cmt_no %llu",
++ (unsigned long long)le64_to_cpu(cs_node->cmt_no),
++ c->cmt_no);
++ goto out_err;
++ }
++ *cs_sqnum = le64_to_cpu(cs_node->ch.sqnum);
++ dbg_rcvry("commit start sqnum %llu", *cs_sqnum);
++ kfree(cs_node);
++ return 0;
++
++out_err:
++ err = -EINVAL;
++out_free:
++ ubifs_err("failed to get CS sqnum");
++ kfree(cs_node);
++ return err;
++}
++
++/**
++ * ubifs_recover_log_leb - scan and recover a log LEB.
++ * @c: UBIFS file-system description object
++ * @lnum: LEB number
++ * @offs: offset
++ * @sbuf: LEB-sized buffer to use
++ *
++ * This function does a scan of a LEB, but caters for errors that might have
++ * been caused by the unclean unmount from which we are attempting to recover.
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++struct ubifs_scan_leb *ubifs_recover_log_leb(struct ubifs_info *c, int lnum,
++ int offs, void *sbuf)
++{
++ struct ubifs_scan_leb *sleb;
++ int next_lnum;
++
++ dbg_rcvry("LEB %d", lnum);
++ next_lnum = lnum + 1;
++ if (next_lnum >= UBIFS_LOG_LNUM + c->log_lebs)
++ next_lnum = UBIFS_LOG_LNUM;
++ if (next_lnum != c->ltail_lnum) {
++ /*
++ * We can only recover at the end of the log, so check that the
++ * next log LEB is empty or out of date.
++ */
++ sleb = ubifs_scan(c, next_lnum, 0, sbuf);
++ if (IS_ERR(sleb))
++ return sleb;
++ if (sleb->nodes_cnt) {
++ struct ubifs_scan_node *snod;
++ unsigned long long cs_sqnum = c->cs_sqnum;
++
++ snod = list_entry(sleb->nodes.next,
++ struct ubifs_scan_node, list);
++ if (cs_sqnum == 0) {
++ int err;
++
++ err = get_cs_sqnum(c, lnum, offs, &cs_sqnum);
++ if (err) {
++ ubifs_scan_destroy(sleb);
++ return ERR_PTR(err);
++ }
++ }
++ if (snod->sqnum > cs_sqnum) {
++ ubifs_err("unrecoverable log corruption "
++ "in LEB %d", lnum);
++ ubifs_scan_destroy(sleb);
++ return ERR_PTR(-EUCLEAN);
++ }
++ }
++ ubifs_scan_destroy(sleb);
++ }
++ return ubifs_recover_leb(c, lnum, offs, sbuf, 0);
++}
++
++/**
++ * recover_head - recover a head.
++ * @c: UBIFS file-system description object
++ * @lnum: LEB number of head to recover
++ * @offs: offset of head to recover
++ * @sbuf: LEB-sized buffer to use
++ *
++ * This function ensures that there is no data on the flash at a head location.
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++static int recover_head(const struct ubifs_info *c, int lnum, int offs,
++ void *sbuf)
++{
++ int len, err, need_clean = 0;
++
++ if (c->min_io_size > 1)
++ len = c->min_io_size;
++ else
++ len = 512;
++ if (offs + len > c->leb_size)
++ len = c->leb_size - offs;
++
++ if (!len)
++ return 0;
++
++ /* Read at the head location and check it is empty flash */
++ err = ubi_read(c->ubi, lnum, sbuf, offs, len);
++ if (err)
++ need_clean = 1;
++ else {
++ uint8_t *p = sbuf;
++
++ while (len--)
++ if (*p++ != 0xff) {
++ need_clean = 1;
++ break;
++ }
++ }
++
++ if (need_clean) {
++ dbg_rcvry("cleaning head at %d:%d", lnum, offs);
++ if (offs == 0)
++ return ubifs_leb_unmap(c, lnum);
++ err = ubi_read(c->ubi, lnum, sbuf, 0, offs);
++ if (err)
++ return err;
++ return ubi_leb_change(c->ubi, lnum, sbuf, offs, UBI_UNKNOWN);
++ }
++
++ return 0;
++}
++
++/**
++ * ubifs_recover_inl_heads - recover index and LPT heads.
++ * @c: UBIFS file-system description object
++ * @sbuf: LEB-sized buffer to use
++ *
++ * This function ensures that there is no data on the flash at the index and
++ * LPT head locations.
++ *
++ * This deals with the recovery of a half-completed journal commit. UBIFS is
++ * careful never to overwrite the last version of the index or the LPT. Because
++ * the index and LPT are wandering trees, data from a half-completed commit will
++ * not be referenced anywhere in UBIFS. The data will be either in LEBs that are
++ * assumed to be empty and will be unmapped anyway before use, or in the index
++ * and LPT heads.
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++int ubifs_recover_inl_heads(const struct ubifs_info *c, void *sbuf)
++{
++ int err;
++
++ ubifs_assert(!(c->vfs_sb->s_flags & MS_RDONLY) || c->remounting_rw);
++
++ dbg_rcvry("checking index head at %d:%d", c->ihead_lnum, c->ihead_offs);
++ err = recover_head(c, c->ihead_lnum, c->ihead_offs, sbuf);
++ if (err)
++ return err;
++
++ dbg_rcvry("checking LPT head at %d:%d", c->nhead_lnum, c->nhead_offs);
++ err = recover_head(c, c->nhead_lnum, c->nhead_offs, sbuf);
++ if (err)
++ return err;
++
++ return 0;
++}
++
++/**
++ * clean_an_unclean_leb - read and write a LEB to remove corruption.
++ * @c: UBIFS file-system description object
++ * @ucleb: unclean LEB information
++ * @sbuf: LEB-sized buffer to use
++ *
++ * This function reads a LEB up to a point pre-determined by the mount recovery,
++ * checks the nodes, and writes the result back to the flash, thereby cleaning
++ * off any following corruption, or non-fatal ECC errors.
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++static int clean_an_unclean_leb(const struct ubifs_info *c,
++ struct ubifs_unclean_leb *ucleb, void *sbuf)
++{
++ int err, lnum = ucleb->lnum, offs = 0, len = ucleb->endpt, quiet = 1;
++ void *buf = sbuf;
++
++ dbg_rcvry("LEB %d len %d", lnum, len);
++
++ if (len == 0) {
++ /* Nothing to read, just unmap it */
++ err = ubifs_leb_unmap(c, lnum);
++ if (err)
++ return err;
++ return 0;
++ }
++
++ err = ubi_read(c->ubi, lnum, buf, offs, len);
++ if (err && err != -EBADMSG)
++ return err;
++
++ while (len >= 8) {
++ int ret;
++
++ cond_resched();
++
++ /* Scan quietly until there is an error */
++ ret = ubifs_scan_a_node(c, buf, len, lnum, offs, quiet);
++
++ if (ret == SCANNED_A_NODE) {
++ /* A valid node, and not a padding node */
++ struct ubifs_ch *ch = buf;
++ int node_len;
++
++ node_len = ALIGN(le32_to_cpu(ch->len), 8);
++ offs += node_len;
++ buf += node_len;
++ len -= node_len;
++ continue;
++ }
++
++ if (ret > 0) {
++ /* Padding bytes or a valid padding node */
++ offs += ret;
++ buf += ret;
++ len -= ret;
++ continue;
++ }
++
++ if (ret == SCANNED_EMPTY_SPACE) {
++ ubifs_err("unexpected empty space at %d:%d",
++ lnum, offs);
++ return -EUCLEAN;
++ }
++
++ if (quiet) {
++ /* Redo the last scan but noisily */
++ quiet = 0;
++ continue;
++ }
++
++ ubifs_scanned_corruption(c, lnum, offs, buf);
++ return -EUCLEAN;
++ }
++
++ /* Pad to min_io_size */
++ len = ALIGN(ucleb->endpt, c->min_io_size);
++ if (len > ucleb->endpt) {
++ int pad_len = len - ALIGN(ucleb->endpt, 8);
++
++ if (pad_len > 0) {
++ buf = c->sbuf + len - pad_len;
++ ubifs_pad(c, buf, pad_len);
++ }
++ }
++
++ /* Write back the LEB atomically */
++ err = ubi_leb_change(c->ubi, lnum, sbuf, len, UBI_UNKNOWN);
++ if (err)
++ return err;
++
++ dbg_rcvry("cleaned LEB %d", lnum);
++
++ return 0;
++}
++
++/**
++ * ubifs_clean_lebs - clean LEBs recovered during read-only mount.
++ * @c: UBIFS file-system description object
++ * @sbuf: LEB-sized buffer to use
++ *
++ * This function cleans a LEB identified during recovery that needs to be
++ * written but was not because UBIFS was mounted read-only. This happens when
++ * remounting to read-write mode.
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++int ubifs_clean_lebs(const struct ubifs_info *c, void *sbuf)
++{
++ dbg_rcvry("recovery");
++ while (!list_empty(&c->unclean_leb_list)) {
++ struct ubifs_unclean_leb *ucleb;
++ int err;
++
++ ucleb = list_entry(c->unclean_leb_list.next,
++ struct ubifs_unclean_leb, list);
++ err = clean_an_unclean_leb(c, ucleb, sbuf);
++ if (err)
++ return err;
++ list_del(&ucleb->list);
++ kfree(ucleb);
++ }
++ return 0;
++}
++
++/**
++ * ubifs_rcvry_gc_commit - recover the GC LEB number and run the commit.
++ * @c: UBIFS file-system description object
++ *
++ * Out-of-place garbage collection requires always one empty LEB with which to
++ * start garbage collection. The LEB number is recorded in c->gc_lnum and is
++ * written to the master node on unmounting. In the case of an unclean unmount
++ * the value of gc_lnum recorded in the master node is out of date and cannot
++ * be used. Instead, recovery must allocate an empty LEB for this purpose.
++ * However, there may not be enough empty space, in which case it must be
++ * possible to GC the dirtiest LEB into the GC head LEB.
++ *
++ * This function also runs the commit which causes the TNC updates from
++ * size-recovery and orphans to be written to the flash. That is important to
++ * ensure correct replay order for subsequent mounts.
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++int ubifs_rcvry_gc_commit(struct ubifs_info *c)
++{
++ struct ubifs_wbuf *wbuf = &c->jheads[GCHD].wbuf;
++ struct ubifs_lprops lp;
++ int lnum, err;
++
++ c->gc_lnum = -1;
++ if (wbuf->lnum == -1) {
++ dbg_rcvry("no GC head LEB");
++ goto find_free;
++ }
++ /*
++ * See whether the used space in the dirtiest LEB fits in the GC head
++ * LEB.
++ */
++ if (wbuf->offs == c->leb_size) {
++ dbg_rcvry("no room in GC head LEB");
++ goto find_free;
++ }
++ err = ubifs_find_dirty_leb(c, &lp, wbuf->offs, 2);
++ if (err) {
++ if (err == -ENOSPC)
++ dbg_err("could not find a dirty LEB");
++ return err;
++ }
++ ubifs_assert(!(lp.flags & LPROPS_INDEX));
++ lnum = lp.lnum;
++ if (lp.free + lp.dirty == c->leb_size) {
++ /* An empty LEB was returned */
++ if (lp.free != c->leb_size) {
++ err = ubifs_change_one_lp(c, lnum, c->leb_size,
++ 0, 0, 0, 0);
++ if (err)
++ return err;
++ }
++ err = ubifs_leb_unmap(c, lnum);
++ if (err)
++ return err;
++ c->gc_lnum = lnum;
++ dbg_rcvry("allocated LEB %d for GC", lnum);
++ /* Run the commit */
++ dbg_rcvry("committing");
++ return ubifs_run_commit(c);
++ }
++ /*
++ * There was no empty LEB so the used space in the dirtiest LEB must fit
++ * in the GC head LEB.
++ */
++ if (lp.free + lp.dirty < wbuf->offs) {
++ dbg_rcvry("LEB %d doesn't fit in GC head LEB %d:%d",
++ lnum, wbuf->lnum, wbuf->offs);
++ err = ubifs_return_leb(c, lnum);
++ if (err)
++ return err;
++ goto find_free;
++ }
++ /*
++ * We run the commit before garbage collection otherwise subsequent
++ * mounts will see the GC and orphan deletion in a different order.
++ */
++ dbg_rcvry("committing");
++ err = ubifs_run_commit(c);
++ if (err)
++ return err;
++ /*
++ * The data in the dirtiest LEB fits in the GC head LEB, so do the GC
++ * - use locking to keep 'ubifs_assert()' happy.
++ */
++ dbg_rcvry("GC'ing LEB %d", lnum);
++ mutex_lock_nested(&wbuf->io_mutex, wbuf->jhead);
++ err = ubifs_garbage_collect_leb(c, &lp);
++ if (err >= 0) {
++ int err2 = ubifs_wbuf_sync_nolock(wbuf);
++
++ if (err2)
++ err = err2;
++ }
++ mutex_unlock(&wbuf->io_mutex);
++ if (err < 0) {
++ dbg_err("GC failed, error %d", err);
++ if (err == -EAGAIN)
++ err = -EINVAL;
++ return err;
++ }
++ if (err != LEB_RETAINED) {
++ dbg_err("GC returned %d", err);
++ return -EINVAL;
++ }
++ err = ubifs_leb_unmap(c, c->gc_lnum);
++ if (err)
++ return err;
++ dbg_rcvry("allocated LEB %d for GC", lnum);
++ return 0;
++
++find_free:
++ /*
++ * There is no GC head LEB or the free space in the GC head LEB is too
++ * small. Allocate gc_lnum by calling 'ubifs_find_free_leb_for_idx()' so
++ * GC is not run.
++ */
++ lnum = ubifs_find_free_leb_for_idx(c);
++ if (lnum < 0) {
++ dbg_err("could not find an empty LEB");
++ return lnum;
++ }
++ /* And reset the index flag */
++ err = ubifs_change_one_lp(c, lnum, LPROPS_NC, LPROPS_NC, 0,
++ LPROPS_INDEX, 0);
++ if (err)
++ return err;
++ c->gc_lnum = lnum;
++ dbg_rcvry("allocated LEB %d for GC", lnum);
++ /* Run the commit */
++ dbg_rcvry("committing");
++ return ubifs_run_commit(c);
++}
++
++/**
++ * struct size_entry - inode size information for recovery.
++ * @rb: link in the RB-tree of sizes
++ * @inum: inode number
++ * @i_size: size on inode
++ * @d_size: maximum size based on data nodes
++ * @exists: indicates whether the inode exists
++ * @inode: inode if pinned in memory awaiting rw mode to fix it
++ */
++struct size_entry {
++ struct rb_node rb;
++ ino_t inum;
++ loff_t i_size;
++ loff_t d_size;
++ int exists;
++ struct inode *inode;
++};
++
++/**
++ * add_ino - add an entry to the size tree.
++ * @c: UBIFS file-system description object
++ * @inum: inode number
++ * @i_size: size on inode
++ * @d_size: maximum size based on data nodes
++ * @exists: indicates whether the inode exists
++ */
++static int add_ino(struct ubifs_info *c, ino_t inum, loff_t i_size,
++ loff_t d_size, int exists)
++{
++ struct rb_node **p = &c->size_tree.rb_node, *parent = NULL;
++ struct size_entry *e;
++
++ while (*p) {
++ parent = *p;
++ e = rb_entry(parent, struct size_entry, rb);
++ if (inum < e->inum)
++ p = &(*p)->rb_left;
++ else
++ p = &(*p)->rb_right;
++ }
++
++ e = kzalloc(sizeof(struct size_entry), GFP_KERNEL);
++ if (!e)
++ return -ENOMEM;
++
++ e->inum = inum;
++ e->i_size = i_size;
++ e->d_size = d_size;
++ e->exists = exists;
++
++ rb_link_node(&e->rb, parent, p);
++ rb_insert_color(&e->rb, &c->size_tree);
++
++ return 0;
++}
++
++/**
++ * find_ino - find an entry on the size tree.
++ * @c: UBIFS file-system description object
++ * @inum: inode number
++ */
++static struct size_entry *find_ino(struct ubifs_info *c, ino_t inum)
++{
++ struct rb_node *p = c->size_tree.rb_node;
++ struct size_entry *e;
++
++ while (p) {
++ e = rb_entry(p, struct size_entry, rb);
++ if (inum < e->inum)
++ p = p->rb_left;
++ else if (inum > e->inum)
++ p = p->rb_right;
++ else
++ return e;
++ }
++ return NULL;
++}
++
++/**
++ * remove_ino - remove an entry from the size tree.
++ * @c: UBIFS file-system description object
++ * @inum: inode number
++ */
++static void remove_ino(struct ubifs_info *c, ino_t inum)
++{
++ struct size_entry *e = find_ino(c, inum);
++
++ if (!e)
++ return;
++ rb_erase(&e->rb, &c->size_tree);
++ kfree(e);
++}
++
++/**
++ * ubifs_destroy_size_tree - free resources related to the size tree.
++ * @c: UBIFS file-system description object
++ */
++void ubifs_destroy_size_tree(struct ubifs_info *c)
++{
++ struct rb_node *this = c->size_tree.rb_node;
++ struct size_entry *e;
++
++ while (this) {
++ if (this->rb_left) {
++ this = this->rb_left;
++ continue;
++ } else if (this->rb_right) {
++ this = this->rb_right;
++ continue;
++ }
++ e = rb_entry(this, struct size_entry, rb);
++ if (e->inode)
++ iput(e->inode);
++ this = rb_parent(this);
++ if (this) {
++ if (this->rb_left == &e->rb)
++ this->rb_left = NULL;
++ else
++ this->rb_right = NULL;
++ }
++ kfree(e);
++ }
++ c->size_tree = RB_ROOT;
++}
++
++/**
++ * ubifs_recover_size_accum - accumulate inode sizes for recovery.
++ * @c: UBIFS file-system description object
++ * @key: node key
++ * @deletion: node is for a deletion
++ * @new_size: inode size
++ *
++ * This function has two purposes:
++ * 1) to ensure there are no data nodes that fall outside the inode size
++ * 2) to ensure there are no data nodes for inodes that do not exist
++ * To accomplish those purposes, a rb-tree is constructed containing an entry
++ * for each inode number in the journal that has not been deleted, and recording
++ * the size from the inode node, the maximum size of any data node (also altered
++ * by truncations) and a flag indicating a inode number for which no inode node
++ * was present in the journal.
++ *
++ * Note that there is still the possibility that there are data nodes that have
++ * been committed that are beyond the inode size, however the only way to find
++ * them would be to scan the entire index. Alternatively, some provision could
++ * be made to record the size of inodes at the start of commit, which would seem
++ * very cumbersome for a scenario that is quite unlikely and the only negative
++ * consequence of which is wasted space.
++ *
++ * This functions returns %0 on success and a negative error code on failure.
++ */
++int ubifs_recover_size_accum(struct ubifs_info *c, union ubifs_key *key,
++ int deletion, loff_t new_size)
++{
++ ino_t inum = key_inum(c, key);
++ struct size_entry *e;
++ int err;
++
++ switch (key_type(c, key)) {
++ case UBIFS_INO_KEY:
++ if (deletion)
++ remove_ino(c, inum);
++ else {
++ e = find_ino(c, inum);
++ if (e) {
++ e->i_size = new_size;
++ e->exists = 1;
++ } else {
++ err = add_ino(c, inum, new_size, 0, 1);
++ if (err)
++ return err;
++ }
++ }
++ break;
++ case UBIFS_DATA_KEY:
++ e = find_ino(c, inum);
++ if (e) {
++ if (new_size > e->d_size)
++ e->d_size = new_size;
++ } else {
++ err = add_ino(c, inum, 0, new_size, 0);
++ if (err)
++ return err;
++ }
++ break;
++ case UBIFS_TRUN_KEY:
++ e = find_ino(c, inum);
++ if (e)
++ e->d_size = new_size;
++ break;
++ }
++ return 0;
++}
++
++/**
++ * fix_size_in_place - fix inode size in place on flash.
++ * @c: UBIFS file-system description object
++ * @e: inode size information for recovery
++ */
++static int fix_size_in_place(struct ubifs_info *c, struct size_entry *e)
++{
++ struct ubifs_ino_node *ino = c->sbuf;
++ unsigned char *p;
++ union ubifs_key key;
++ int err, lnum, offs, len;
++ loff_t i_size;
++ uint32_t crc;
++
++ /* Locate the inode node LEB number and offset */
++ ino_key_init(c, &key, e->inum);
++ err = ubifs_tnc_locate(c, &key, ino, &lnum, &offs);
++ if (err)
++ goto out;
++ /*
++ * If the size recorded on the inode node is greater than the size that
++ * was calculated from nodes in the journal then don't change the inode.
++ */
++ i_size = le64_to_cpu(ino->size);
++ if (i_size >= e->d_size)
++ return 0;
++ /* Read the LEB */
++ err = ubi_read(c->ubi, lnum, c->sbuf, 0, c->leb_size);
++ if (err)
++ goto out;
++ /* Change the size field and recalculate the CRC */
++ ino = c->sbuf + offs;
++ ino->size = cpu_to_le64(e->d_size);
++ len = le32_to_cpu(ino->ch.len);
++ crc = crc32(UBIFS_CRC32_INIT, (void *)ino + 8, len - 8);
++ ino->ch.crc = cpu_to_le32(crc);
++ /* Work out where data in the LEB ends and free space begins */
++ p = c->sbuf;
++ len = c->leb_size - 1;
++ while (p[len] == 0xff)
++ len -= 1;
++ len = ALIGN(len + 1, c->min_io_size);
++ /* Atomically write the fixed LEB back again */
++ err = ubi_leb_change(c->ubi, lnum, c->sbuf, len, UBI_UNKNOWN);
++ if (err)
++ goto out;
++ dbg_rcvry("inode %lu at %d:%d size %lld -> %lld ", e->inum, lnum, offs,
++ i_size, e->d_size);
++ return 0;
++
++out:
++ ubifs_warn("inode %lu failed to fix size %lld -> %lld error %d",
++ e->inum, e->i_size, e->d_size, err);
++ return err;
++}
++
++/**
++ * ubifs_recover_size - recover inode size.
++ * @c: UBIFS file-system description object
++ *
++ * This function attempts to fix inode size discrepancies identified by the
++ * 'ubifs_recover_size_accum()' function.
++ *
++ * This functions returns %0 on success and a negative error code on failure.
++ */
++int ubifs_recover_size(struct ubifs_info *c)
++{
++ struct rb_node *this = rb_first(&c->size_tree);
++
++ while (this) {
++ struct size_entry *e;
++ int err;
++
++ e = rb_entry(this, struct size_entry, rb);
++ if (!e->exists) {
++ union ubifs_key key;
++
++ ino_key_init(c, &key, e->inum);
++ err = ubifs_tnc_lookup(c, &key, c->sbuf);
++ if (err && err != -ENOENT)
++ return err;
++ if (err == -ENOENT) {
++ /* Remove data nodes that have no inode */
++ dbg_rcvry("removing ino %lu", e->inum);
++ err = ubifs_tnc_remove_ino(c, e->inum);
++ if (err)
++ return err;
++ } else {
++ struct ubifs_ino_node *ino = c->sbuf;
++
++ e->exists = 1;
++ e->i_size = le64_to_cpu(ino->size);
++ }
++ }
++ if (e->exists && e->i_size < e->d_size) {
++ if (!e->inode && (c->vfs_sb->s_flags & MS_RDONLY)) {
++ /* Fix the inode size and pin it in memory */
++ struct inode *inode;
++
++ inode = ubifs_iget(c->vfs_sb, e->inum);
++ if (IS_ERR(inode))
++ return PTR_ERR(inode);
++ if (inode->i_size < e->d_size) {
++ dbg_rcvry("ino %lu size %lld -> %lld",
++ e->inum, e->d_size,
++ inode->i_size);
++ inode->i_size = e->d_size;
++ e->inode = inode;
++ this = rb_next(this);
++ continue;
++ }
++ iput(inode);
++ } else {
++ /* Fix the size in place */
++ err = fix_size_in_place(c, e);
++ if (err) {
++ if (e->inode)
++ /*
++ * We have changed the inode
++ * size in memory but failed to
++ * fix it on flash. Mark it
++ * dirty without budgeting, and
++ * hope we don't run out of
++ * space.
++ */
++ mark_inode_dirty_sync(e->inode);
++ /*
++ * We consider that failing to recover
++ * the size is not fatal, because it
++ * only affects files that were being
++ * written without synchronization and
++ * the only down side is that some space
++ * may be wasted.
++ */
++ err = 0;
++ }
++ if (e->inode)
++ iput(e->inode);
++ }
++ }
++ this = rb_next(this);
++ rb_erase(&e->rb, &c->size_tree);
++ kfree(e);
++ }
++ return 0;
++}
+diff --exclude=.git -urN linux-2.6.25.6/fs/ubifs/replay.c avr32-2.6/fs/ubifs/replay.c
+--- linux-2.6.25.6/fs/ubifs/replay.c 1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/fs/ubifs/replay.c 2008-06-12 15:09:45.515816461 +0200
+@@ -0,0 +1,1075 @@
+/*
-+ * AVR32 Performance Counter Driver
++ * This file is part of UBIFS.
+ *
-+ * Copyright (C) 2005-2007 Atmel Corporation
++ * Copyright (C) 2006-2008 Nokia Corporation.
+ *
-+ * This program is free software; you can redistribute it and/or modify
-+ * it under the terms of the GNU General Public License version 2 as
-+ * published by the Free Software Foundation.
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published by
++ * the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but WITHOUT
++ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
++ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
++ * more details.
++ *
++ * You should have received a copy of the GNU General Public License along with
++ * this program; if not, write to the Free Software Foundation, Inc., 51
++ * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
++ *
++ * Authors: Adrian Hunter
++ * Artem Bityutskiy (Битюцкий Артём)
++ */
++
++/*
++ * This file contains journal replay code. It runs when the file-system is being
++ * mounted and requires no locking.
++ *
++ * The larger is the journal, the longer it takes to scan it, so the longer it
++ * takes to mount UBIFS. This is why the journal has limited size which may be
++ * changed depending on the system requirements. But a larger journal gives
++ * faster I/O speed because it writes the index less frequently. So this is a
++ * trade-off. Also, the journal is indexed by the in-memory index (TNC), so the
++ * larger is the journal, the more memory its index may consume.
++ */
++
++#include "ubifs.h"
++
++/*
++ * Replay flags.
++ *
++ * REPLAY_DELETION: node was deleted
++ * REPLAY_REF: node is a reference node
++ */
++enum {
++ REPLAY_DELETION = 1,
++ REPLAY_REF = 2,
++};
++
++/**
++ * struct replay_entry - replay tree entry.
++ * @lnum: logical eraseblock number of the node
++ * @offs: node offset
++ * @len: node length
++ * @sqnum: node sequence number
++ * @flags: replay flags
++ * @rb: links the replay tree
++ * @key: node key
++ * @nm: directory entry name
++ * @old_size: truncation old size
++ * @new_size: truncation new size
++ * @free: amount of free space in a bud
++ * @dirty: amount of dirty space in a bud from padding and deletion nodes
+ *
-+ * Author: Ronny Pedersen
++ * UBIFS journal replay must compare node sequence numbers, which means it must
++ * build a tree of node information to insert into the TNC.
+ */
-+#include <linux/errno.h>
-+#include <linux/interrupt.h>
-+#include <linux/irq.h>
-+#include <linux/oprofile.h>
-+#include <linux/sched.h>
-+#include <linux/types.h>
-+
-+#include <asm/sysreg.h>
-+#include <asm/system.h>
++struct replay_entry {
++ int lnum;
++ int offs;
++ int len;
++ unsigned long long sqnum;
++ int flags;
++ struct rb_node rb;
++ union ubifs_key key;
++ union {
++ struct qstr nm;
++ struct {
++ loff_t old_size;
++ loff_t new_size;
++ };
++ struct {
++ int free;
++ int dirty;
++ };
++ };
++};
+
-+#define AVR32_PERFCTR_IRQ_GROUP 0
-+#define AVR32_PERFCTR_IRQ_LINE 1
++/**
++ * struct bud_entry - entry in the list of buds to replay.
++ * @list: next bud in the list
++ * @bud: bud description object
++ * @free: free bytes in the bud
++ * @sqnum: reference node sequence number
++ */
++struct bud_entry {
++ struct list_head list;
++ struct ubifs_bud *bud;
++ int free;
++ unsigned long long sqnum;
++};
+
-+enum { PCCNT, PCNT0, PCNT1, NR_counter };
++/**
++ * set_bud_lprops - set free and dirty space used by a bud.
++ * @c: UBIFS file-system description object
++ * @r: replay entry of bud
++ */
++static int set_bud_lprops(struct ubifs_info *c, struct replay_entry *r)
++{
++ const struct ubifs_lprops *lp;
++ int err = 0, dirty;
+
-+struct avr32_perf_counter {
-+ unsigned long enabled;
-+ unsigned long event;
-+ unsigned long count;
-+ unsigned long unit_mask;
-+ unsigned long kernel;
-+ unsigned long user;
++ ubifs_get_lprops(c);
+
-+ u32 ie_mask;
-+ u32 flag_mask;
-+};
++ lp = ubifs_lpt_lookup_dirty(c, r->lnum);
++ if (IS_ERR(lp)) {
++ err = PTR_ERR(lp);
++ goto out;
++ }
+
-+static struct avr32_perf_counter counter[NR_counter] = {
-+ {
-+ .ie_mask = SYSREG_BIT(IEC),
-+ .flag_mask = SYSREG_BIT(FC),
-+ }, {
-+ .ie_mask = SYSREG_BIT(IE0),
-+ .flag_mask = SYSREG_BIT(F0),
-+ }, {
-+ .ie_mask = SYSREG_BIT(IE1),
-+ .flag_mask = SYSREG_BIT(F1),
-+ },
-+};
++ dirty = lp->dirty;
++ if (r->offs == 0 && (lp->free != c->leb_size || lp->dirty != 0)) {
++ /*
++ * The LEB was added to the journal with a starting offset of
++ * zero which means the LEB must have been empty. The LEB
++ * property values should be lp->free == c->leb_size and
++ * lp->dirty == 0, but that is not the case. The reason is that
++ * the LEB was garbage collected. The garbage collector resets
++ * the free and dirty space without recording it anywhere except
++ * lprops, so if there is not a commit then lprops does not have
++ * that information next time the file system is mounted.
++ *
++ * We do not need to adjust free space because the scan has told
++ * us the exact value which is recorded in the replay entry as
++ * r->free.
++ *
++ * However we do need to subtract from the dirty space the
++ * amount of space that the garbage collector reclaimed, which
++ * is the whole LEB minus the amount of space that was free.
++ */
++ dbg_mnt("bud LEB %d was GC'd (%d free, %d dirty)", r->lnum,
++ lp->free, lp->dirty);
++ dbg_gc("bud LEB %d was GC'd (%d free, %d dirty)", r->lnum,
++ lp->free, lp->dirty);
++ dirty -= c->leb_size - lp->free;
++ /*
++ * If the replay order was perfect the dirty space would now be
++ * zero. The order is not perfect because the the journal heads
++ * race with eachother. This is not a problem but is does mean
++ * that the dirty space may temporarily exceed c->leb_size
++ * during the replay.
++ */
++ if (dirty != 0)
++ dbg_msg("LEB %d lp: %d free %d dirty "
++ "replay: %d free %d dirty", r->lnum, lp->free,
++ lp->dirty, r->free, r->dirty);
++ }
++ lp = ubifs_change_lp(c, lp, r->free, dirty + r->dirty,
++ lp->flags | LPROPS_TAKEN, 0);
++ if (IS_ERR(lp)) {
++ err = PTR_ERR(lp);
++ goto out;
++ }
++out:
++ ubifs_release_lprops(c);
++ return err;
++}
+
-+static void avr32_perf_counter_reset(void)
++/**
++ * trun_remove_range - apply a replay entry for a truncation to the TNC.
++ * @c: UBIFS file-system description object
++ * @r: replay entry of truncation
++ */
++static int trun_remove_range(struct ubifs_info *c, struct replay_entry *r)
+{
-+ /* Reset all counter and disable/clear all interrupts */
-+ sysreg_write(PCCR, (SYSREG_BIT(PCCR_R)
-+ | SYSREG_BIT(PCCR_C)
-+ | SYSREG_BIT(FC)
-+ | SYSREG_BIT(F0)
-+ | SYSREG_BIT(F1)));
++ unsigned min_blk, max_blk;
++ union ubifs_key min_key, max_key;
++ ino_t ino;
++
++ min_blk = r->new_size / UBIFS_BLOCK_SIZE;
++ if (r->new_size & (UBIFS_BLOCK_SIZE - 1))
++ min_blk += 1;
++
++ max_blk = r->old_size / UBIFS_BLOCK_SIZE;
++ if ((r->old_size & (UBIFS_BLOCK_SIZE - 1)) == 0)
++ max_blk -= 1;
++
++ ino = key_inum(c, &r->key);
++
++ data_key_init(c, &min_key, ino, min_blk);
++ data_key_init(c, &max_key, ino, max_blk);
++
++ return ubifs_tnc_remove_range(c, &min_key, &max_key);
+}
+
-+static irqreturn_t avr32_perf_counter_interrupt(int irq, void *dev_id)
++/**
++ * apply_replay_entry - apply a replay entry to the TNC.
++ * @c: UBIFS file-system description object
++ * @r: replay entry to apply
++ *
++ * Apply a replay entry to the TNC.
++ */
++static int apply_replay_entry(struct ubifs_info *c, struct replay_entry *r)
+{
-+ struct avr32_perf_counter *ctr = dev_id;
-+ struct pt_regs *regs;
-+ u32 pccr;
++ int err, deletion = ((r->flags & REPLAY_DELETION) != 0);
++
++ dbg_mnt("LEB %d:%d len %d flgs %d sqnum %llu %s", r->lnum,
++ r->offs, r->len, r->flags, r->sqnum, DBGKEY(&r->key));
++
++ /* Set c->replay_sqnum to help deal with dangling branches. */
++ c->replay_sqnum = r->sqnum;
++
++ if (r->flags & REPLAY_REF)
++ err = set_bud_lprops(c, r);
++ else if (is_hash_key(c, &r->key)) {
++ if (deletion)
++ err = ubifs_tnc_remove_nm(c, &r->key, &r->nm);
++ else
++ err = ubifs_tnc_add_nm(c, &r->key, r->lnum, r->offs,
++ r->len, &r->nm);
++ } else {
++ if (deletion)
++ switch (key_type(c, &r->key)) {
++ case UBIFS_INO_KEY:
++ {
++ ino_t inum = key_inum(c, &r->key);
+
-+ if (likely(!(intc_get_pending(AVR32_PERFCTR_IRQ_GROUP)
-+ & (1 << AVR32_PERFCTR_IRQ_LINE))))
-+ return IRQ_NONE;
++ err = ubifs_tnc_remove_ino(c, inum);
++ break;
++ }
++ case UBIFS_TRUN_KEY:
++ err = trun_remove_range(c, r);
++ break;
++ default:
++ err = ubifs_tnc_remove(c, &r->key);
++ break;
++ }
++ else
++ err = ubifs_tnc_add(c, &r->key, r->lnum, r->offs,
++ r->len);
++ if (err)
++ return err;
++
++ if (c->need_recovery)
++ err = ubifs_recover_size_accum(c, &r->key, deletion,
++ r->new_size);
++ }
+
-+ regs = get_irq_regs();
-+ pccr = sysreg_read(PCCR);
++ return err;
++}
+
-+ /* Clear the interrupt flags we're about to handle */
-+ sysreg_write(PCCR, pccr);
++/**
++ * destroy_replay_tree - destroy the replay.
++ * @c: UBIFS file-system description object
++ *
++ * Destroy the replay tree.
++ */
++static void destroy_replay_tree(struct ubifs_info *c)
++{
++ struct rb_node *this = c->replay_tree.rb_node;
++ struct replay_entry *r;
+
-+ /* PCCNT */
-+ if (ctr->enabled && (pccr & ctr->flag_mask)) {
-+ sysreg_write(PCCNT, -ctr->count);
-+ oprofile_add_sample(regs, PCCNT);
++ while (this) {
++ if (this->rb_left) {
++ this = this->rb_left;
++ continue;
++ } else if (this->rb_right) {
++ this = this->rb_right;
++ continue;
++ }
++ r = rb_entry(this, struct replay_entry, rb);
++ this = rb_parent(this);
++ if (this) {
++ if (this->rb_left == &r->rb)
++ this->rb_left = NULL;
++ else
++ this->rb_right = NULL;
++ }
++ if (is_hash_key(c, &r->key))
++ kfree(r->nm.name);
++ kfree(r);
+ }
-+ ctr++;
-+ /* PCNT0 */
-+ if (ctr->enabled && (pccr & ctr->flag_mask)) {
-+ sysreg_write(PCNT0, -ctr->count);
-+ oprofile_add_sample(regs, PCNT0);
++ c->replay_tree = RB_ROOT;
++}
++
++/**
++ * apply_replay_tree - apply the replay tree to the TNC.
++ * @c: UBIFS file-system description object
++ *
++ * Apply the replay tree.
++ * Returns zero in case of success and a negative error code in case of
++ * failure.
++ */
++static int apply_replay_tree(struct ubifs_info *c)
++{
++ struct rb_node *this = rb_first(&c->replay_tree);
++
++ while (this) {
++ struct replay_entry *r;
++ int err;
++
++ cond_resched();
++
++ r = rb_entry(this, struct replay_entry, rb);
++ err = apply_replay_entry(c, r);
++ if (err)
++ return err;
++ this = rb_next(this);
+ }
-+ ctr++;
-+ /* PCNT1 */
-+ if (ctr->enabled && (pccr & ctr->flag_mask)) {
-+ sysreg_write(PCNT1, -ctr->count);
-+ oprofile_add_sample(regs, PCNT1);
++ return 0;
++}
++
++/**
++ * insert_node - insert a node to the replay tree.
++ * @c: UBIFS file-system description object
++ * @lnum: node logical eraseblock number
++ * @offs: node offset
++ * @len: node length
++ * @key: node key
++ * @sqnum: sequence number
++ * @deletion: non-zero if this is a deletion
++ * @used: number of bytes in use in a LEB
++ * @old_size: truncation old size
++ * @new_size: truncation new size
++ *
++ * This function inserts a scanned non-direntry node to the replay tree. The
++ * replay tree is an RB-tree containing @struct replay_entry elements which are
++ * indexed by the sequence number. The replay tree is applied at the very end
++ * of the replay process. Since the tree is sorted in sequence number order,
++ * the older modifications are applied first. This function returns zero in
++ * case of success and a negative error code in case of failure.
++ */
++static int insert_node(struct ubifs_info *c, int lnum, int offs, int len,
++ union ubifs_key *key, unsigned long long sqnum,
++ int deletion, int *used, loff_t old_size,
++ loff_t new_size)
++{
++ struct rb_node **p = &c->replay_tree.rb_node, *parent = NULL;
++ struct replay_entry *r;
++
++ if (key_inum(c, key) >= c->highest_inum)
++ c->highest_inum = key_inum(c, key);
++
++ dbg_mnt("add LEB %d:%d, key %s", lnum, offs, DBGKEY(key));
++ while (*p) {
++ parent = *p;
++ r = rb_entry(parent, struct replay_entry, rb);
++ if (sqnum < r->sqnum) {
++ p = &(*p)->rb_left;
++ continue;
++ } else if (sqnum > r->sqnum) {
++ p = &(*p)->rb_right;
++ continue;
++ }
++ ubifs_err("duplicate sqnum in replay");
++ return -EINVAL;
+ }
+
-+ return IRQ_HANDLED;
++ r = kzalloc(sizeof(struct replay_entry), GFP_KERNEL);
++ if (!r)
++ return -ENOMEM;
++
++ if (!deletion)
++ *used += ALIGN(len, 8);
++ r->lnum = lnum;
++ r->offs = offs;
++ r->len = len;
++ r->sqnum = sqnum;
++ r->flags = (deletion ? REPLAY_DELETION : 0);
++ r->old_size = old_size;
++ r->new_size = new_size;
++ key_copy(c, key, &r->key);
++
++ rb_link_node(&r->rb, parent, p);
++ rb_insert_color(&r->rb, &c->replay_tree);
++ return 0;
+}
+
-+static int avr32_perf_counter_create_files(struct super_block *sb,
-+ struct dentry *root)
-+{
-+ struct dentry *dir;
-+ unsigned int i;
-+ char filename[4];
++/**
++ * insert_dent - insert a directory entry node into the replay tree.
++ * @c: UBIFS file-system description object
++ * @lnum: node logical eraseblock number
++ * @offs: node offset
++ * @len: node length
++ * @key: node key
++ * @name: directory entry name
++ * @nlen: directory entry name length
++ * @sqnum: sequence number
++ * @deletion: non-zero if this is a deletion
++ * @used: number of bytes in use in a LEB
++ *
++ * This function inserts a scanned directory entry node to the replay tree.
++ * Returns zero in case of success and a negative error code in case of
++ * failure.
++ *
++ * This function is also used for extended attribute entries because they are
++ * implemented as directory entry nodes.
++ */
++static int insert_dent(struct ubifs_info *c, int lnum, int offs, int len,
++ union ubifs_key *key, const char *name, int nlen,
++ unsigned long long sqnum, int deletion, int *used)
++{
++ struct rb_node **p = &c->replay_tree.rb_node, *parent = NULL;
++ struct replay_entry *r;
++ char *nbuf;
++
++ if (key_inum(c, key) >= c->highest_inum)
++ c->highest_inum = key_inum(c, key);
++
++ dbg_mnt("add LEB %d:%d, key %s", lnum, offs, DBGKEY(key));
++ while (*p) {
++ parent = *p;
++ r = rb_entry(parent, struct replay_entry, rb);
++ if (sqnum < r->sqnum) {
++ p = &(*p)->rb_left;
++ continue;
++ }
++ if (sqnum > r->sqnum) {
++ p = &(*p)->rb_right;
++ continue;
++ }
++ ubifs_err("duplicate sqnum in replay");
++ return -EINVAL;
++ }
++
++ r = kzalloc(sizeof(struct replay_entry), GFP_KERNEL);
++ if (!r)
++ return -ENOMEM;
++ nbuf = kmalloc(nlen + 1, GFP_KERNEL);
++ if (!nbuf) {
++ kfree(r);
++ return -ENOMEM;
++ }
+
-+ for (i = 0; i < NR_counter; i++) {
-+ snprintf(filename, sizeof(filename), "%u", i);
-+ dir = oprofilefs_mkdir(sb, root, filename);
++ if (!deletion)
++ *used += ALIGN(len, 8);
++ r->lnum = lnum;
++ r->offs = offs;
++ r->len = len;
++ r->sqnum = sqnum;
++ r->nm.len = nlen;
++ memcpy(nbuf, name, nlen);
++ nbuf[nlen] = '\0';
++ r->nm.name = nbuf;
++ r->flags = (deletion ? REPLAY_DELETION : 0);
++ key_copy(c, key, &r->key);
++
++ ubifs_assert(!*p);
++ rb_link_node(&r->rb, parent, p);
++ rb_insert_color(&r->rb, &c->replay_tree);
++ return 0;
++}
+
-+ oprofilefs_create_ulong(sb, dir, "enabled",
-+ &counter[i].enabled);
-+ oprofilefs_create_ulong(sb, dir, "event",
-+ &counter[i].event);
-+ oprofilefs_create_ulong(sb, dir, "count",
-+ &counter[i].count);
++/**
++ * ubifs_validate_entry - validate directory or extended attribute entry node.
++ * @c: UBIFS file-system description object
++ * @dent: the node to validate
++ *
++ * This function validates directory or extended attribute entry node @dent.
++ * Returns zero if the node is all right and a %-EINVAL if not.
++ */
++int ubifs_validate_entry(struct ubifs_info *c,
++ const struct ubifs_dent_node *dent)
++{
++ int key_type = key_type_flash(c, dent->key);
++ int nlen = le16_to_cpu(dent->nlen);
++
++ if (le32_to_cpu(dent->ch.len) != nlen + UBIFS_DENT_NODE_SZ + 1 ||
++ dent->type >= UBIFS_ITYPES_CNT ||
++ nlen > UBIFS_MAX_NLEN || dent->name[nlen] != 0 ||
++ strnlen(dent->name, nlen) != nlen ||
++ le64_to_cpu(dent->inum) > MAX_INUM) {
++ ubifs_err("bad %s node", key_type == UBIFS_DENT_KEY ?
++ "directory entry" : "extended attribute entry");
++ return -EINVAL;
++ }
+
-+ /* Dummy entries */
-+ oprofilefs_create_ulong(sb, dir, "kernel",
-+ &counter[i].kernel);
-+ oprofilefs_create_ulong(sb, dir, "user",
-+ &counter[i].user);
-+ oprofilefs_create_ulong(sb, dir, "unit_mask",
-+ &counter[i].unit_mask);
++ if (key_type != UBIFS_DENT_KEY && key_type != UBIFS_XENT_KEY) {
++ ubifs_err("bad key type %d", key_type);
++ return -EINVAL;
+ }
+
+ return 0;
+}
+
-+static int avr32_perf_counter_setup(void)
++/**
++ * replay_bud - replay a bud logical eraseblock.
++ * @c: UBIFS file-system description object
++ * @lnum: bud logical eraseblock number to replay
++ * @offs: bud start offset
++ * @jhead: journal head to which this bud belongs
++ * @free: amount of free space in the bud is returned here
++ * @dirty: amount of dirty space from padding and deletion nodes is returned
++ * here
++ *
++ * This function returns zero in case of success and a negative error code in
++ * case of failure.
++ */
++static int replay_bud(struct ubifs_info *c, int lnum, int offs, int jhead,
++ int *free, int *dirty)
+{
-+ struct avr32_perf_counter *ctr;
-+ u32 pccr;
-+ int ret;
-+ int i;
++ int err = 0, used = 0;
++ struct ubifs_scan_leb *sleb;
++ struct ubifs_scan_node *snod;
++ struct ubifs_bud *bud;
+
-+ pr_debug("avr32_perf_counter_setup\n");
++ dbg_mnt("replay bud LEB %d, head %d", lnum, jhead);
++ if (c->need_recovery)
++ sleb = ubifs_recover_leb(c, lnum, offs, c->sbuf, jhead != GCHD);
++ else
++ sleb = ubifs_scan(c, lnum, offs, c->sbuf);
++ if (IS_ERR(sleb))
++ return PTR_ERR(sleb);
+
-+ if (sysreg_read(PCCR) & SYSREG_BIT(PCCR_E)) {
-+ printk(KERN_ERR
-+ "oprofile: setup: perf counter already enabled\n");
-+ return -EBUSY;
-+ }
++ /*
++ * The bud does not have to start from offset zero - the beginning of
++ * the 'lnum' LEB may contain previously committed data. One of the
++ * things we have to do in replay is to correctly update lprops with
++ * newer information about this LEB.
++ *
++ * At this point lprops thinks that this LEB has 'c->leb_size - offs'
++ * bytes of free space because it only contain information about
++ * committed data.
++ *
++ * But we know that real amount of free space is 'c->leb_size -
++ * sleb->endpt', and the space in the 'lnum' LEB between 'offs' and
++ * 'sleb->endpt' is used by bud data. We have to correctly calculate
++ * how much of these data are dirty and update lprops with this
++ * information.
++ *
++ * The dirt in that LEB region is comprised of padding nodes, deletion
++ * nodes, truncation nodes and nodes which are obsoleted by subsequent
++ * nodes in this LEB. So instead of calculating clean space, we
++ * calculate used space ('used' variable).
++ */
+
-+ ret = request_irq(AVR32_PERFCTR_IRQ_GROUP,
-+ avr32_perf_counter_interrupt, IRQF_SHARED,
-+ "oprofile", counter);
-+ if (ret)
-+ return ret;
++ list_for_each_entry(snod, &sleb->nodes, list) {
++ int deletion = 0;
+
-+ avr32_perf_counter_reset();
++ cond_resched();
+
-+ pccr = 0;
-+ for (i = PCCNT; i < NR_counter; i++) {
-+ ctr = &counter[i];
-+ if (!ctr->enabled)
-+ continue;
++ if (snod->sqnum >= SQNUM_WATERMARK) {
++ ubifs_err("file system's life ended");
++ goto out_dump;
++ }
+
-+ pr_debug("enabling counter %d...\n", i);
++ if (snod->sqnum > c->max_sqnum)
++ c->max_sqnum = snod->sqnum;
+
-+ pccr |= ctr->ie_mask;
++ switch (snod->type) {
++ case UBIFS_INO_NODE:
++ {
++ struct ubifs_ino_node *ino = snod->node;
++ loff_t new_size = le64_to_cpu(ino->size);
+
-+ switch (i) {
-+ case PCCNT:
-+ /* PCCNT always counts cycles, so no events */
-+ sysreg_write(PCCNT, -ctr->count);
++ if (le32_to_cpu(ino->nlink) == 0)
++ deletion = 1;
++ err = insert_node(c, lnum, snod->offs, snod->len,
++ &snod->key, snod->sqnum, deletion,
++ &used, 0, new_size);
++ break;
++ }
++ case UBIFS_DATA_NODE:
++ {
++ struct ubifs_data_node *dn = snod->node;
++ loff_t new_size = le32_to_cpu(dn->size) +
++ key_block(c, &snod->key) *
++ UBIFS_BLOCK_SIZE;
++
++ err = insert_node(c, lnum, snod->offs, snod->len,
++ &snod->key, snod->sqnum, deletion,
++ &used, 0, new_size);
+ break;
-+ case PCNT0:
-+ pccr |= SYSREG_BF(CONF0, ctr->event);
-+ sysreg_write(PCNT0, -ctr->count);
++ }
++ case UBIFS_DENT_NODE:
++ case UBIFS_XENT_NODE:
++ {
++ struct ubifs_dent_node *dent = snod->node;
++
++ err = ubifs_validate_entry(c, dent);
++ if (err)
++ goto out_dump;
++
++ err = insert_dent(c, lnum, snod->offs, snod->len,
++ &snod->key, dent->name,
++ le16_to_cpu(dent->nlen), snod->sqnum,
++ !le64_to_cpu(dent->inum), &used);
+ break;
-+ case PCNT1:
-+ pccr |= SYSREG_BF(CONF1, ctr->event);
-+ sysreg_write(PCNT1, -ctr->count);
++ }
++ case UBIFS_TRUN_NODE:
++ {
++ struct ubifs_trun_node *trun = snod->node;
++ loff_t old_size = le64_to_cpu(trun->old_size);
++ loff_t new_size = le64_to_cpu(trun->new_size);
++ union ubifs_key key;
++
++ /* Validate truncation node */
++ if (old_size < 0 || old_size > c->max_inode_sz ||
++ new_size < 0 || new_size > c->max_inode_sz ||
++ old_size <= new_size) {
++ ubifs_err("bad truncation node");
++ goto out_dump;
++ }
++
++ /*
++ * Create a fake truncation key just to use the same
++ * functions which expect nodes to have keys.
++ */
++ trun_key_init(c, &key, le32_to_cpu(trun->inum));
++ err = insert_node(c, lnum, snod->offs, snod->len,
++ &key, snod->sqnum, 1, &used,
++ old_size, new_size);
+ break;
+ }
++ default:
++ ubifs_err("unexpected node type %d in bud LEB %d:%d",
++ snod->type, lnum, snod->offs);
++ err = -EINVAL;
++ goto out_dump;
++ }
++ if (err)
++ goto out;
+ }
+
-+ pr_debug("oprofile: writing 0x%x to PCCR...\n", pccr);
++ bud = ubifs_search_bud(c, lnum);
++ if (!bud)
++ BUG();
++
++ ubifs_assert(sleb->endpt - offs >= used);
++ ubifs_assert(sleb->endpt % c->min_io_size == 0);
+
-+ sysreg_write(PCCR, pccr);
++ if (sleb->endpt + c->min_io_size <= c->leb_size &&
++ !(c->vfs_sb->s_flags & MS_RDONLY))
++ err = ubifs_wbuf_seek_nolock(&c->jheads[jhead].wbuf, lnum,
++ sleb->endpt, UBI_SHORTTERM);
+
-+ return 0;
-+}
++ *dirty = sleb->endpt - offs - used;
++ *free = c->leb_size - sleb->endpt;
+
-+static void avr32_perf_counter_shutdown(void)
-+{
-+ pr_debug("avr32_perf_counter_shutdown\n");
++out:
++ ubifs_scan_destroy(sleb);
++ return err;
+
-+ avr32_perf_counter_reset();
-+ free_irq(AVR32_PERFCTR_IRQ_GROUP, counter);
++out_dump:
++ ubifs_err("bad node is at LEB %d:%d", lnum, snod->offs);
++ dbg_dump_node(c, snod->node);
++ ubifs_scan_destroy(sleb);
++ return -EINVAL;
+}
+
-+static int avr32_perf_counter_start(void)
-+{
-+ pr_debug("avr32_perf_counter_start\n");
++/**
++ * insert_ref_node - insert a reference node to the replay tree.
++ * @c: UBIFS file-system description object
++ * @lnum: node logical eraseblock number
++ * @offs: node offset
++ * @sqnum: sequence number
++ * @free: amount of free space in bud
++ * @dirty: amount of dirty space from padding and deletion nodes
++ *
++ * This function inserts a reference node to the replay tree and returns zero
++ * in case of success ort a negative error code in case of failure.
++ */
++static int insert_ref_node(struct ubifs_info *c, int lnum, int offs,
++ unsigned long long sqnum, int free, int dirty)
++{
++ struct rb_node **p = &c->replay_tree.rb_node, *parent = NULL;
++ struct replay_entry *r;
++
++ dbg_mnt("add ref LEB %d:%d", lnum, offs);
++ while (*p) {
++ parent = *p;
++ r = rb_entry(parent, struct replay_entry, rb);
++ if (sqnum < r->sqnum) {
++ p = &(*p)->rb_left;
++ continue;
++ } else if (sqnum > r->sqnum) {
++ p = &(*p)->rb_right;
++ continue;
++ }
++ ubifs_err("duplicate sqnum in replay tree");
++ return -EINVAL;
++ }
++
++ r = kzalloc(sizeof(struct replay_entry), GFP_KERNEL);
++ if (!r)
++ return -ENOMEM;
+
-+ sysreg_write(PCCR, sysreg_read(PCCR) | SYSREG_BIT(PCCR_E));
++ r->lnum = lnum;
++ r->offs = offs;
++ r->sqnum = sqnum;
++ r->flags = REPLAY_REF;
++ r->free = free;
++ r->dirty = dirty;
+
++ rb_link_node(&r->rb, parent, p);
++ rb_insert_color(&r->rb, &c->replay_tree);
+ return 0;
+}
+
-+static void avr32_perf_counter_stop(void)
-+{
-+ pr_debug("avr32_perf_counter_stop\n");
++/**
++ * replay_buds - replay all buds.
++ * @c: UBIFS file-system description object
++ *
++ * This function returns zero in case of success and a negative error code in
++ * case of failure.
++ */
++static int replay_buds(struct ubifs_info *c)
++{
++ struct bud_entry *b;
++ int err, uninitialized_var(free), uninitialized_var(dirty);
++
++ list_for_each_entry(b, &c->replay_buds, list) {
++ err = replay_bud(c, b->bud->lnum, b->bud->start, b->bud->jhead,
++ &free, &dirty);
++ if (err)
++ return err;
++ err = insert_ref_node(c, b->bud->lnum, b->bud->start, b->sqnum,
++ free, dirty);
++ if (err)
++ return err;
++ }
+
-+ sysreg_write(PCCR, sysreg_read(PCCR) & ~SYSREG_BIT(PCCR_E));
++ return 0;
+}
+
-+static struct oprofile_operations avr32_perf_counter_ops __initdata = {
-+ .create_files = avr32_perf_counter_create_files,
-+ .setup = avr32_perf_counter_setup,
-+ .shutdown = avr32_perf_counter_shutdown,
-+ .start = avr32_perf_counter_start,
-+ .stop = avr32_perf_counter_stop,
-+ .cpu_type = "avr32",
-+};
++/**
++ * destroy_bud_list - destroy the list of buds to replay.
++ * @c: UBIFS file-system description object
++ */
++static void destroy_bud_list(struct ubifs_info *c)
++{
++ struct bud_entry *b;
+
-+int __init oprofile_arch_init(struct oprofile_operations *ops)
++ while (!list_empty(&c->replay_buds)) {
++ b = list_entry(c->replay_buds.next, struct bud_entry, list);
++ list_del(&b->list);
++ kfree(b);
++ }
++}
++
++/**
++ * add_replay_bud - add a bud to the list of buds to replay.
++ * @c: UBIFS file-system description object
++ * @lnum: bud logical eraseblock number to replay
++ * @offs: bud start offset
++ * @jhead: journal head to which this bud belongs
++ * @sqnum: reference node sequence number
++ *
++ * This function returns zero in case of success and a negative error code in
++ * case of failure.
++ */
++static int add_replay_bud(struct ubifs_info *c, int lnum, int offs, int jhead,
++ unsigned long long sqnum)
+{
-+ if (!(current_cpu_data.features & AVR32_FEATURE_PCTR))
-+ return -ENODEV;
++ struct ubifs_bud *bud;
++ struct bud_entry *b;
++
++ dbg_mnt("add replay bud LEB %d:%d, head %d", lnum, offs, jhead);
++
++ bud = kmalloc(sizeof(struct ubifs_bud), GFP_KERNEL);
++ if (!bud)
++ return -ENOMEM;
++
++ b = kmalloc(sizeof(struct bud_entry), GFP_KERNEL);
++ if (!b) {
++ kfree(bud);
++ return -ENOMEM;
++ }
+
-+ memcpy(ops, &avr32_perf_counter_ops,
-+ sizeof(struct oprofile_operations));
++ bud->lnum = lnum;
++ bud->start = offs;
++ bud->jhead = jhead;
++ ubifs_add_bud(c, bud);
+
-+ printk(KERN_INFO "oprofile: using AVR32 performance monitoring.\n");
++ b->bud = bud;
++ b->sqnum = sqnum;
++ list_add_tail(&b->list, &c->replay_buds);
+
+ return 0;
+}
+
-+void oprofile_arch_exit(void)
++/**
++ * validate_ref - validate a reference node.
++ * @c: UBIFS file-system description object
++ * @ref: the reference node to validate
++ * @ref_lnum: LEB number of the reference node
++ * @ref_offs: reference node offset
++ *
++ * This function returns %1 if a bud reference already exists for the LEB. %0 is
++ * returned if the reference node is new, otherwise %-EINVAL is returned if
++ * validation failed.
++ */
++static int validate_ref(struct ubifs_info *c, const struct ubifs_ref_node *ref)
+{
++ struct ubifs_bud *bud;
++ int lnum = le32_to_cpu(ref->lnum);
++ unsigned int offs = le32_to_cpu(ref->offs);
++ unsigned int jhead = le32_to_cpu(ref->jhead);
+
-+}
---- a/Documentation/kernel-parameters.txt
-+++ b/Documentation/kernel-parameters.txt
-@@ -34,6 +34,7 @@
- ALSA ALSA sound support is enabled.
- APIC APIC support is enabled.
- APM Advanced Power Management support is enabled.
-+ AVR32 AVR32 architecture is enabled.
- AX25 Appropriate AX.25 support is enabled.
- BLACKFIN Blackfin architecture is enabled.
- DRM Direct Rendering Management support is enabled.
-@@ -1124,6 +1125,10 @@
- of returning the full 64-bit number.
- The default is to return 64-bit inode numbers.
-
-+ nmi_debug= [KNL,AVR32] Specify one or more actions to take
-+ when a NMI is triggered.
-+ Format: [state][,regs][,debounce][,die]
-+
- nmi_watchdog= [KNL,BUGS=X86-32] Debugging features for SMP kernels
-
- no387 [BUGS=X86-32] Tells the kernel to use the 387 maths
---- a/drivers/clocksource/Makefile
-+++ b/drivers/clocksource/Makefile
-@@ -1,3 +1,4 @@
-+obj-$(CONFIG_ATMEL_TCB_CLKSRC) += tcb_clksrc.o
- obj-$(CONFIG_X86_CYCLONE_TIMER) += cyclone.o
- obj-$(CONFIG_X86_PM_TIMER) += acpi_pm.o
- obj-$(CONFIG_SCx200HR_TIMER) += scx200_hrt.o
---- /dev/null
-+++ b/drivers/clocksource/tcb_clksrc.c
-@@ -0,0 +1,305 @@
-+#include <linux/init.h>
-+#include <linux/clocksource.h>
-+#include <linux/clockchips.h>
-+#include <linux/interrupt.h>
-+#include <linux/irq.h>
++ /*
++ * ref->offs may point to the end of LEB when the journal head points
++ * to the end of LEB and we write reference node for it during commit.
++ * So this is why we require 'offs > c->leb_size'.
++ */
++ if (jhead >= c->jhead_cnt || lnum >= c->leb_cnt ||
++ lnum < c->main_first || offs > c->leb_size ||
++ offs & (c->min_io_size - 1))
++ return -EINVAL;
+
-+#include <linux/clk.h>
-+#include <linux/err.h>
-+#include <linux/ioport.h>
-+#include <linux/io.h>
-+#include <linux/platform_device.h>
-+#include <linux/atmel_tc.h>
++ /* Make sure we have not already looked at this bud */
++ bud = ubifs_search_bud(c, lnum);
++ if (bud) {
++ if (bud->jhead == jhead && bud->start <= offs)
++ return 1;
++ ubifs_err("bud at LEB %d:%d was already referred", lnum, offs);
++ return -EINVAL;
++ }
+
++ return 0;
++}
+
-+/*
-+ * We're configured to use a specific TC block, one that's not hooked
-+ * up to external hardware, to provide a time solution:
-+ *
-+ * - Two channels combine to create a free-running 32 bit counter
-+ * with a base rate of 5+ MHz, packaged as a clocksource (with
-+ * resolution better than 200 nsec).
-+ *
-+ * - The third channel may be used to provide a 16-bit clockevent
-+ * source, used in either periodic or oneshot mode. This runs
-+ * at 32 KiHZ, and can handle delays of up to two seconds.
-+ *
-+ * A boot clocksource and clockevent source are also currently needed,
-+ * unless the relevant platforms (ARM/AT91, AVR32/AT32) are changed so
-+ * this code can be used when init_timers() is called, well before most
-+ * devices are set up. (Some low end AT91 parts, which can run uClinux,
-+ * have only the timers in one TC block... they currently don't support
-+ * the tclib code, because of that initialization issue.)
++/**
++ * replay_log_leb - replay a log logical eraseblock.
++ * @c: UBIFS file-system description object
++ * @lnum: log logical eraseblock to replay
++ * @offs: offset to start replaying from
++ * @sbuf: scan buffer
+ *
-+ * REVISIT behavior during system suspend states... we should disable
-+ * all clocks and save the power. Easily done for clockevent devices,
-+ * but clocksources won't necessarily get the needed notifications.
-+ * For deeper system sleep states, this will be mandatory...
++ * This function replays a log LEB and returns zero in case of success, %1 if
++ * this is the last LEB in the log, and a negative error code in case of
++ * failure.
+ */
++static int replay_log_leb(struct ubifs_info *c, int lnum, int offs, void *sbuf)
++{
++ int err;
++ struct ubifs_scan_leb *sleb;
++ struct ubifs_scan_node *snod;
++ const struct ubifs_cs_node *node;
++
++ dbg_mnt("replay log LEB %d:%d", lnum, offs);
++ sleb = ubifs_scan(c, lnum, offs, sbuf);
++ if (IS_ERR(sleb)) {
++ if (c->need_recovery)
++ sleb = ubifs_recover_log_leb(c, lnum, offs, sbuf);
++ if (IS_ERR(sleb))
++ return PTR_ERR(sleb);
++ }
++
++ if (sleb->nodes_cnt == 0) {
++ err = 1;
++ goto out;
++ }
++
++ node = sleb->buf;
++
++ snod = list_entry(sleb->nodes.next, struct ubifs_scan_node, list);
++ if (c->cs_sqnum == 0) {
++ /*
++ * This is the first log LEB we are looking at, make sure that
++ * the first node is a commit start node. Also record its
++ * sequence number so that UBIFS can determine where the log
++ * ends, because all nodes which were have higher sequence
++ * numbers.
++ */
++ if (snod->type != UBIFS_CS_NODE) {
++ dbg_err("first log node at LEB %d:%d is not CS node",
++ lnum, offs);
++ goto out_dump;
++ }
++ if (le64_to_cpu(node->cmt_no) != c->cmt_no) {
++ dbg_err("first CS node at LEB %d:%d has wrong "
++ "commit number %llu expected %llu",
++ lnum, offs,
++ (unsigned long long)le64_to_cpu(node->cmt_no),
++ c->cmt_no);
++ goto out_dump;
++ }
++
++ c->cs_sqnum = le64_to_cpu(node->ch.sqnum);
++ dbg_mnt("commit start sqnum %llu", c->cs_sqnum);
++ }
++
++ if (snod->sqnum < c->cs_sqnum) {
++ /*
++ * This means that we reached end of log and now
++ * look to the older log data, which was already
++ * committed but the eraseblock was not erased (UBIFS
++ * only unmaps it). So this basically means we have to
++ * exit with "end of log" code.
++ */
++ err = 1;
++ goto out;
++ }
+
-+static void __iomem *tcaddr;
++ /* Make sure the first node sits at offset zero of the LEB */
++ if (snod->offs != 0) {
++ dbg_err("first node is not at zero offset");
++ goto out_dump;
++ }
+
-+static cycle_t tc_get_cycles(void)
-+{
-+ unsigned long flags;
-+ u32 lower, upper;
++ list_for_each_entry(snod, &sleb->nodes, list) {
+
-+ raw_local_irq_save(flags);
-+ do {
-+ upper = __raw_readl(tcaddr + ATMEL_TC_REG(1, CV));
-+ lower = __raw_readl(tcaddr + ATMEL_TC_REG(0, CV));
-+ } while (upper != __raw_readl(tcaddr + ATMEL_TC_REG(1, CV)));
++ cond_resched();
+
-+ raw_local_irq_restore(flags);
-+ return (upper << 16) | lower;
-+}
++ if (snod->sqnum >= SQNUM_WATERMARK) {
++ ubifs_err("file system's life ended");
++ goto out_dump;
++ }
+
-+static struct clocksource clksrc = {
-+ .name = "tcb_clksrc",
-+ .rating = 200,
-+ .read = tc_get_cycles,
-+ .mask = CLOCKSOURCE_MASK(32),
-+ .shift = 18,
-+ .flags = CLOCK_SOURCE_IS_CONTINUOUS,
-+};
++ if (snod->sqnum < c->cs_sqnum) {
++ dbg_err("bad sqnum %llu, commit sqnum %llu",
++ snod->sqnum, c->cs_sqnum);
++ goto out_dump;
++ }
+
-+#ifdef CONFIG_GENERIC_CLOCKEVENTS
++ if (snod->sqnum > c->max_sqnum)
++ c->max_sqnum = snod->sqnum;
+
-+struct tc_clkevt_device {
-+ struct clock_event_device clkevt;
-+ struct clk *clk;
-+ void __iomem *regs;
-+};
++ switch (snod->type) {
++ case UBIFS_REF_NODE: {
++ const struct ubifs_ref_node *ref = snod->node;
+
-+static struct tc_clkevt_device *to_tc_clkevt(struct clock_event_device *clkevt)
-+{
-+ return container_of(clkevt, struct tc_clkevt_device, clkevt);
++ err = validate_ref(c, ref);
++ if (err == 1)
++ break; /* Already have this bud */
++ if (err)
++ goto out_dump;
++
++ err = add_replay_bud(c, le32_to_cpu(ref->lnum),
++ le32_to_cpu(ref->offs),
++ le32_to_cpu(ref->jhead),
++ snod->sqnum);
++ if (err)
++ goto out;
++
++ break;
++ }
++ case UBIFS_CS_NODE:
++ /* Make sure it sits at the beginning of LEB */
++ if (snod->offs != 0) {
++ ubifs_err("unexpected node in log");
++ goto out_dump;
++ }
++ break;
++ default:
++ ubifs_err("unexpected node in log");
++ goto out_dump;
++ }
++ }
++
++ if (sleb->endpt || c->lhead_offs >= c->leb_size) {
++ c->lhead_lnum = lnum;
++ c->lhead_offs = sleb->endpt;
++ }
++
++ err = !sleb->endpt;
++out:
++ ubifs_scan_destroy(sleb);
++ return err;
++
++out_dump:
++ ubifs_err("log error detected while replying the log at LEB %d:%d",
++ lnum, offs + snod->offs);
++ dbg_dump_node(c, snod->node);
++ ubifs_scan_destroy(sleb);
++ return -EINVAL;
+}
+
-+/* For now, we always use the 32K clock ... this optimizes for NO_HZ,
-+ * because using one of the divided clocks would usually mean the
-+ * tick rate can never be less than several dozen Hz (vs 0.5 Hz).
++/**
++ * take_ihead - update the status of the index head in lprops to 'taken'.
++ * @c: UBIFS file-system description object
+ *
-+ * A divided clock could be good for high resolution timers, since
-+ * 30.5 usec resolution can seem "low".
++ * This function returns the amount of free space in the index head LEB or a
++ * negative error code.
+ */
-+static u32 timer_clock;
-+
-+static void tc_mode(enum clock_event_mode m, struct clock_event_device *d)
++static int take_ihead(struct ubifs_info *c)
+{
-+ struct tc_clkevt_device *tcd = to_tc_clkevt(d);
-+ void __iomem *regs = tcd->regs;
++ const struct ubifs_lprops *lp;
++ int err, free;
+
-+ if (tcd->clkevt.mode == CLOCK_EVT_MODE_PERIODIC
-+ || tcd->clkevt.mode == CLOCK_EVT_MODE_ONESHOT) {
-+ __raw_writel(0xff, regs + ATMEL_TC_REG(2, IDR));
-+ __raw_writel(ATMEL_TC_CLKDIS, regs + ATMEL_TC_REG(2, CCR));
-+ clk_disable(tcd->clk);
++ ubifs_get_lprops(c);
++
++ lp = ubifs_lpt_lookup_dirty(c, c->ihead_lnum);
++ if (IS_ERR(lp)) {
++ err = PTR_ERR(lp);
++ goto out;
+ }
+
-+ switch (m) {
++ free = lp->free;
+
-+ /* By not making the gentime core emulate periodic mode on top
-+ * of oneshot, we get lower overhead and improved accuracy.
-+ */
-+ case CLOCK_EVT_MODE_PERIODIC:
-+ clk_enable(tcd->clk);
++ lp = ubifs_change_lp(c, lp, LPROPS_NC, LPROPS_NC,
++ lp->flags | LPROPS_TAKEN, 0);
++ if (IS_ERR(lp)) {
++ err = PTR_ERR(lp);
++ goto out;
++ }
+
-+ /* slow clock, count up to RC, then irq and restart */
-+ __raw_writel(timer_clock
-+ | ATMEL_TC_WAVE | ATMEL_TC_WAVESEL_UP_AUTO,
-+ regs + ATMEL_TC_REG(2, CMR));
-+ __raw_writel((32768 + HZ/2) / HZ, tcaddr + ATMEL_TC_REG(2, RC));
++ err = free;
++out:
++ ubifs_release_lprops(c);
++ return err;
++}
+
-+ /* Enable clock and interrupts on RC compare */
-+ __raw_writel(ATMEL_TC_CPCS, regs + ATMEL_TC_REG(2, IER));
++/**
++ * ubifs_replay_journal - replay journal.
++ * @c: UBIFS file-system description object
++ *
++ * This function scans the journal, replays and cleans it up. It makes sure all
++ * memory data structures related to uncommitted journal are built (dirty TNC
++ * tree, tree of buds, modified lprops, etc).
++ */
++int ubifs_replay_journal(struct ubifs_info *c)
++{
++ int err, i, lnum, offs, free;
++ void *sbuf = NULL;
+
-+ /* go go gadget! */
-+ __raw_writel(ATMEL_TC_CLKEN | ATMEL_TC_SWTRG,
-+ regs + ATMEL_TC_REG(2, CCR));
-+ break;
++ BUILD_BUG_ON(UBIFS_TRUN_KEY > 5);
+
-+ case CLOCK_EVT_MODE_ONESHOT:
-+ clk_enable(tcd->clk);
++ /* Update the status of the index head in lprops to 'taken' */
++ free = take_ihead(c);
++ if (free < 0)
++ return free; /* Error code */
+
-+ /* slow clock, count up to RC, then irq and stop */
-+ __raw_writel(timer_clock | ATMEL_TC_CPCSTOP
-+ | ATMEL_TC_WAVE | ATMEL_TC_WAVESEL_UP_AUTO,
-+ regs + ATMEL_TC_REG(2, CMR));
-+ __raw_writel(ATMEL_TC_CPCS, regs + ATMEL_TC_REG(2, IER));
++ if (c->ihead_offs != c->leb_size - free) {
++ ubifs_err("bad index head LEB %d:%d", c->ihead_lnum,
++ c->ihead_offs);
++ return -EINVAL;
++ }
+
-+ /* set_next_event() configures and starts the timer */
-+ break;
++ sbuf = vmalloc(c->leb_size);
++ if (!sbuf)
++ return -ENOMEM;
+
-+ default:
-+ break;
++ dbg_mnt("start replaying the journal");
++
++ c->replaying = 1;
++
++ lnum = c->ltail_lnum = c->lhead_lnum;
++ offs = c->lhead_offs;
++
++ for (i = 0; i < c->log_lebs; i++, lnum++) {
++ if (lnum >= UBIFS_LOG_LNUM + c->log_lebs) {
++ /*
++ * The log is logically circular, we reached the last
++ * LEB, switch to the first one.
++ */
++ lnum = UBIFS_LOG_LNUM;
++ offs = 0;
++ }
++ err = replay_log_leb(c, lnum, offs, sbuf);
++ if (err == 1)
++ /* We hit the end of the log */
++ break;
++ if (err)
++ goto out;
++ offs = 0;
+ }
-+}
+
-+static int tc_next_event(unsigned long delta, struct clock_event_device *d)
-+{
-+ __raw_writel(delta, tcaddr + ATMEL_TC_REG(2, RC));
++ err = replay_buds(c);
++ if (err)
++ goto out;
+
-+ /* go go gadget! */
-+ __raw_writel(ATMEL_TC_CLKEN | ATMEL_TC_SWTRG,
-+ tcaddr + ATMEL_TC_REG(2, CCR));
-+ return 0;
++ err = apply_replay_tree(c);
++ if (err)
++ goto out;
++
++ ubifs_assert(c->bud_bytes <= c->max_bud_bytes || c->need_recovery);
++ dbg_mnt("finished, log head LEB %d:%d, max_sqnum %llu, "
++ "highest_inum %lu", c->lhead_lnum, c->lhead_offs, c->max_sqnum,
++ c->highest_inum);
++out:
++ destroy_replay_tree(c);
++ destroy_bud_list(c);
++ vfree(sbuf);
++ c->replaying = 0;
++ return err;
+}
+diff --exclude=.git -urN linux-2.6.25.6/fs/ubifs/sb.c avr32-2.6/fs/ubifs/sb.c
+--- linux-2.6.25.6/fs/ubifs/sb.c 1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/fs/ubifs/sb.c 2008-06-12 15:09:45.515816461 +0200
+@@ -0,0 +1,618 @@
++/*
++ * This file is part of UBIFS.
++ *
++ * Copyright (C) 2006-2008 Nokia Corporation.
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published by
++ * the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but WITHOUT
++ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
++ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
++ * more details.
++ *
++ * You should have received a copy of the GNU General Public License along with
++ * this program; if not, write to the Free Software Foundation, Inc., 51
++ * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
++ *
++ * Authors: Artem Bityutskiy (Битюцкий Артём)
++ * Adrian Hunter
++ */
+
-+static struct tc_clkevt_device clkevt = {
-+ .clkevt = {
-+ .name = "tc_clkevt",
-+ .features = CLOCK_EVT_FEAT_PERIODIC
-+ | CLOCK_EVT_FEAT_ONESHOT,
-+ .shift = 32,
-+ /* Should be lower than at91rm9200's system timer */
-+ .rating = 125,
-+ .cpumask = CPU_MASK_CPU0,
-+ .set_next_event = tc_next_event,
-+ .set_mode = tc_mode,
-+ },
-+};
++/*
++ * This file implements UBIFS superblock. The superblock is stored at the first
++ * LEB of the volume and is never changed by UBIFS. Only user-space tools may
++ * change it. The superblock node mostly contains geometry information.
++ */
+
-+static irqreturn_t ch2_irq(int irq, void *handle)
-+{
-+ struct tc_clkevt_device *dev = handle;
-+ unsigned int sr;
++#include "ubifs.h"
++#include <linux/random.h>
+
-+ sr = __raw_readl(dev->regs + ATMEL_TC_REG(2, SR));
-+ if (sr & ATMEL_TC_CPCS) {
-+ dev->clkevt.event_handler(&dev->clkevt);
-+ return IRQ_HANDLED;
-+ }
++/*
++ * Default journal size in logical eraseblocks as a percent of total
++ * flash size.
++ */
++#define DEFAULT_JNL_PERCENT 5
+
-+ return IRQ_NONE;
-+}
++/* Default maximum journal size in bytes */
++#define DEFAULT_MAX_JNL (32*1024*1024)
+
-+static struct irqaction tc_irqaction = {
-+ .name = "tc_clkevt",
-+ .flags = IRQF_TIMER | IRQF_DISABLED,
-+ .handler = ch2_irq,
-+};
++/* Default indexing tree fanout */
++#define DEFAULT_FANOUT 8
+
-+static void __init setup_clkevents(struct atmel_tc *tc,
-+ struct clk *t0_clk, int clk32k_divisor_idx)
-+{
-+ struct platform_device *pdev = tc->pdev;
-+ struct clk *t2_clk = tc->clk[2];
-+ int irq = tc->irq[2];
++/* Default number of LEBs for orphan information */
++#ifdef CONFIG_UBIFS_FS_DEBUG
++#define DEFAULT_ORPHAN_LEBS 2 /* 2 is better for testing */
++#else
++#define DEFAULT_ORPHAN_LEBS 1
++#endif
+
-+ clkevt.regs = tc->regs;
-+ clkevt.clk = t2_clk;
-+ tc_irqaction.dev_id = &clkevt;
++/* Default number of journal heads */
++#define DEFAULT_JHEADS_CNT 1
+
-+ timer_clock = clk32k_divisor_idx;
++/* Default positions of different LEBs in the main area */
++#define DEFAULT_IDX_LEB 0
++#define DEFAULT_DATA_LEB 1
++#define DEFAULT_GC_LEB 2
+
-+ clkevt.clkevt.mult = div_sc(32768, NSEC_PER_SEC, clkevt.clkevt.shift);
-+ clkevt.clkevt.max_delta_ns
-+ = clockevent_delta2ns(0xffff, &clkevt.clkevt);
-+ clkevt.clkevt.min_delta_ns = clockevent_delta2ns(1, &clkevt.clkevt) + 1;
++/* Default number of LEB numbers in LPT's save table */
++#define DEFAULT_LSAVE_CNT 256
+
-+ setup_irq(irq, &tc_irqaction);
++/* Default reserved pool size as a percent of maximum free space */
++#define DEFAULT_RP_PERCENT 5
+
-+ clockevents_register_device(&clkevt.clkevt);
-+}
++/* The default maximum size of reserved pool in bytes */
++#define DEFAULT_MAX_RP_SIZE (5*1024*1024)
+
-+#else /* !CONFIG_GENERIC_CLOCKEVENTS */
++/* Default UBIFS compressor */
++#define DEFAULT_COMPRESSOR UBIFS_COMPR_LZO
+
-+static void __init setup_clkevents(struct atmel_tc *tc,
-+ struct clk *t0_clk, int clk32k_divisor_idx)
-+{
-+ /* NOTHING */
-+}
++/* Default time granularity in nanoseconds */
++#define DEFAULT_TIME_GRAN 1000000000
+
-+#endif
++/**
++ * create_default_filesystem - format empty UBI volume.
++ * @c: UBIFS file-system description object
++ *
++ * This function creates default empty file-system. Returns zero in case of
++ * success and a negative error code in case of failure.
++ */
++static int create_default_filesystem(struct ubifs_info *c)
++{
++ struct ubifs_sb_node *sup;
++ struct ubifs_mst_node *mst;
++ struct ubifs_idx_node *idx;
++ struct ubifs_branch *br;
++ struct ubifs_ino_node *ino;
++ struct ubifs_cs_node *cs;
++ union ubifs_key key;
++ int err, tmp, jnl_lebs, log_lebs, max_buds, main_lebs, main_first;
++ int lpt_lebs, lpt_first, orph_lebs, big_lpt, ino_waste, sup_flags = 0;
++ uint64_t tmp64, main_bytes;
++
++ /* Some functions called from here depend on the @c->key_len filed */
++ c->key_len = UBIFS_SK_LEN;
+
-+static int __init tcb_clksrc_init(void)
-+{
-+ static char bootinfo[] __initdata
-+ = KERN_DEBUG "%s: tc%d at %d.%03d MHz\n";
++ /*
++ * First of all, we have to calculate default file-system geometry -
++ * log size, journal size, etc.
++ */
++ c->max_leb_cnt = c->leb_cnt;
++ if (c->leb_cnt < 0x7FFFFFFF / DEFAULT_JNL_PERCENT)
++ /* We can first multiply then divide and have no overflow */
++ jnl_lebs = c->leb_cnt * DEFAULT_JNL_PERCENT / 100;
++ else
++ jnl_lebs = (c->leb_cnt / 100) * DEFAULT_JNL_PERCENT;
+
-+ struct platform_device *pdev;
-+ struct atmel_tc *tc;
-+ struct clk *t0_clk, *t1_clk;
-+ u32 rate, divided_rate = 0;
-+ int best_divisor_idx = -1;
-+ int clk32k_divisor_idx = -1;
-+ int i;
++ if (jnl_lebs < UBIFS_MIN_JNL_LEBS)
++ jnl_lebs = UBIFS_MIN_JNL_LEBS;
++ if (jnl_lebs * c->leb_size > DEFAULT_MAX_JNL)
++ jnl_lebs = DEFAULT_MAX_JNL / c->leb_size;
+
-+ tc = atmel_tc_alloc(CONFIG_ATMEL_TCB_CLKSRC_BLOCK, clksrc.name);
-+ if (!tc) {
-+ pr_debug("can't alloc TC for clocksource\n");
-+ return -ENODEV;
-+ }
-+ tcaddr = tc->regs;
-+ pdev = tc->pdev;
++ /*
++ * The log should be large enough to fit reference nodes for all bud
++ * LEBs. Because buds do not have to start from the beginning of LEBs
++ * (half of the LEB may contain committed data), the log should
++ * generally be larger, make it twice as large.
++ */
++ tmp = 2 * (c->ref_node_alsz * jnl_lebs) + c->leb_size - 1;
++ log_lebs = tmp / c->leb_size;
++ /* Plus one LEB reserved for commit */
++ log_lebs += 1;
++ /* And some extra space to allow writes while committing */
++ log_lebs += 1;
+
-+ t0_clk = tc->clk[0];
-+ clk_enable(t0_clk);
++ max_buds = jnl_lebs - log_lebs;
++ if (max_buds < UBIFS_MIN_BUD_LEBS)
++ max_buds = UBIFS_MIN_BUD_LEBS;
+
-+ /* How fast will we be counting? Pick something over 5 MHz. */
-+ rate = (u32) clk_get_rate(t0_clk);
-+ for (i = 0; i < 5; i++) {
-+ unsigned divisor = atmel_tc_divisors[i];
-+ unsigned tmp;
++ /*
++ * Orphan nodes are stored in a separate area. One node can store a lot
++ * of orphan inode numbers, but when new orphan comes we just add a new
++ * orphan node. At some point the nodes are consolidated into one
++ * orphan node.
++ */
++ orph_lebs = DEFAULT_ORPHAN_LEBS;
+
-+ /* remember 32 KiHz clock for later */
-+ if (!divisor) {
-+ clk32k_divisor_idx = i;
-+ continue;
-+ }
++ main_lebs = c->leb_cnt - UBIFS_SB_LEBS - UBIFS_MST_LEBS - log_lebs;
++ main_lebs -= orph_lebs;
+
-+ tmp = rate / divisor;
-+ pr_debug("TC: %u / %-3u [%d] --> %u\n", rate, divisor, i, tmp);
-+ if (best_divisor_idx > 0) {
-+ if (tmp < 5 * 1000 * 1000)
-+ continue;
-+ }
-+ divided_rate = tmp;
-+ best_divisor_idx = i;
++ lpt_first = UBIFS_LOG_LNUM + log_lebs;
++ c->lsave_cnt = DEFAULT_LSAVE_CNT;
++ err = ubifs_create_dflt_lpt(c, &main_lebs, lpt_first, &lpt_lebs,
++ &big_lpt);
++ if (err)
++ return err;
++
++ dbg_gen("LEB Properties Tree created (LEBs %d-%d)", lpt_first,
++ lpt_first + lpt_lebs - 1);
++
++ main_first = c->leb_cnt - main_lebs;
++
++ /* Create default superblock */
++ tmp = ALIGN(UBIFS_SB_NODE_SZ, c->min_io_size);
++ sup = kzalloc(tmp, GFP_KERNEL);
++ if (!sup)
++ return -ENOMEM;
++
++ tmp64 = (uint64_t)max_buds * c->leb_size;
++ if (big_lpt)
++ sup_flags |= UBIFS_FLG_BIGLPT;
++
++ sup->ch.node_type = UBIFS_SB_NODE;
++ sup->key_hash = UBIFS_KEY_HASH_R5;
++ sup->flags = cpu_to_le32(sup_flags);
++ sup->min_io_size = cpu_to_le32(c->min_io_size);
++ sup->leb_size = cpu_to_le32(c->leb_size);
++ sup->leb_cnt = cpu_to_le32(c->leb_cnt);
++ sup->max_leb_cnt = cpu_to_le32(c->max_leb_cnt);
++ sup->max_bud_bytes = cpu_to_le64(tmp64);
++ sup->log_lebs = cpu_to_le32(log_lebs);
++ sup->lpt_lebs = cpu_to_le32(lpt_lebs);
++ sup->orph_lebs = cpu_to_le32(orph_lebs);
++ sup->jhead_cnt = cpu_to_le32(DEFAULT_JHEADS_CNT);
++ sup->fanout = cpu_to_le32(DEFAULT_FANOUT);
++ sup->lsave_cnt = cpu_to_le32(c->lsave_cnt);
++ sup->fmt_version = cpu_to_le32(UBIFS_FORMAT_VERSION);
++ sup->default_compr = cpu_to_le16(DEFAULT_COMPRESSOR);
++ sup->time_gran = cpu_to_le32(DEFAULT_TIME_GRAN);
++
++ generate_random_uuid(sup->uuid);
++
++ main_bytes = (uint64_t)main_lebs * c->leb_size;
++ tmp64 = main_bytes * DEFAULT_RP_PERCENT;
++ do_div(tmp64, 100);
++ if (tmp64 > DEFAULT_MAX_RP_SIZE)
++ tmp64 = DEFAULT_MAX_RP_SIZE;
++ sup->rp_size = cpu_to_le64(tmp64);
++
++ err = ubifs_write_node(c, sup, UBIFS_SB_NODE_SZ, 0, 0, UBI_LONGTERM);
++ kfree(sup);
++ if (err)
++ return err;
++
++ dbg_gen("default superblock created at LEB 0:0");
++
++ /* Create default master node */
++ mst = kzalloc(c->mst_node_alsz, GFP_KERNEL);
++ if (!mst)
++ return -ENOMEM;
++
++ mst->ch.node_type = UBIFS_MST_NODE;
++ mst->log_lnum = cpu_to_le32(UBIFS_LOG_LNUM);
++ mst->highest_inum = cpu_to_le64(UBIFS_FIRST_INO);
++ mst->cmt_no = 0;
++ mst->root_lnum = cpu_to_le32(main_first + DEFAULT_IDX_LEB);
++ mst->root_offs = 0;
++ tmp = ubifs_idx_node_sz(c, 1);
++ mst->root_len = cpu_to_le32(tmp);
++ mst->gc_lnum = cpu_to_le32(main_first + DEFAULT_GC_LEB);
++ mst->ihead_lnum = cpu_to_le32(main_first + DEFAULT_IDX_LEB);
++ mst->ihead_offs = cpu_to_le32(ALIGN(tmp, c->min_io_size));
++ mst->index_size = cpu_to_le64(ALIGN(tmp, 8));
++ mst->lpt_lnum = cpu_to_le32(c->lpt_lnum);
++ mst->lpt_offs = cpu_to_le32(c->lpt_offs);
++ mst->nhead_lnum = cpu_to_le32(c->nhead_lnum);
++ mst->nhead_offs = cpu_to_le32(c->nhead_offs);
++ mst->ltab_lnum = cpu_to_le32(c->ltab_lnum);
++ mst->ltab_offs = cpu_to_le32(c->ltab_offs);
++ mst->lsave_lnum = cpu_to_le32(c->lsave_lnum);
++ mst->lsave_offs = cpu_to_le32(c->lsave_offs);
++ mst->lscan_lnum = cpu_to_le32(main_first);
++ mst->empty_lebs = cpu_to_le32(main_lebs - 2);
++ mst->idx_lebs = cpu_to_le32(1);
++ mst->leb_cnt = cpu_to_le32(c->leb_cnt);
++
++ /* Calculate lprops statistics */
++ tmp64 = main_bytes;
++ tmp64 -= ALIGN(ubifs_idx_node_sz(c, 1), c->min_io_size);
++ tmp64 -= ALIGN(UBIFS_INO_NODE_SZ, c->min_io_size);
++ mst->total_free = cpu_to_le64(tmp64);
++
++ tmp64 = ALIGN(ubifs_idx_node_sz(c, 1), c->min_io_size);
++ ino_waste = ALIGN(UBIFS_INO_NODE_SZ, c->min_io_size) -
++ UBIFS_INO_NODE_SZ;
++ tmp64 += ino_waste;
++ tmp64 -= ALIGN(ubifs_idx_node_sz(c, 1), 8);
++ mst->total_dirty = cpu_to_le64(tmp64);
++
++ /* The indexing LEB does not contribute to dark space */
++ tmp64 = (c->main_lebs - 1) * c->dark_wm;
++ mst->total_dark = cpu_to_le64(tmp64);
++
++ mst->total_used = cpu_to_le64(UBIFS_INO_NODE_SZ);
++
++ err = ubifs_write_node(c, mst, UBIFS_MST_NODE_SZ, UBIFS_MST_LNUM, 0,
++ UBI_UNKNOWN);
++ if (err) {
++ kfree(mst);
++ return err;
+ }
++ err = ubifs_write_node(c, mst, UBIFS_MST_NODE_SZ, UBIFS_MST_LNUM + 1, 0,
++ UBI_UNKNOWN);
++ kfree(mst);
++ if (err)
++ return err;
+
-+ clksrc.mult = clocksource_hz2mult(divided_rate, clksrc.shift);
++ dbg_gen("default master node created at LEB %d:0", UBIFS_MST_LNUM);
+
-+ printk(bootinfo, clksrc.name, CONFIG_ATMEL_TCB_CLKSRC_BLOCK,
-+ divided_rate / 1000000,
-+ ((divided_rate + 500000) % 1000000) / 1000);
++ /* Create the root indexing node */
++ tmp = ubifs_idx_node_sz(c, 1);
++ idx = kzalloc(ALIGN(tmp, c->min_io_size), GFP_KERNEL);
++ if (!idx)
++ return -ENOMEM;
+
-+ /* tclib will give us three clocks no matter what the
-+ * underlying platform supports.
-+ */
-+ clk_enable(tc->clk[1]);
++ c->key_fmt = UBIFS_SIMPLE_KEY_FMT;
++ c->key_hash = key_r5_hash;
++
++ idx->ch.node_type = UBIFS_IDX_NODE;
++ idx->child_cnt = cpu_to_le16(1);
++ ino_key_init(c, &key, UBIFS_ROOT_INO);
++ br = ubifs_idx_branch(c, idx, 0);
++ key_write_idx(c, &key, &br->key);
++ br->lnum = cpu_to_le32(main_first + DEFAULT_DATA_LEB);
++ br->len = cpu_to_le32(UBIFS_INO_NODE_SZ);
++ err = ubifs_write_node(c, idx, tmp, main_first + DEFAULT_IDX_LEB, 0,
++ UBI_UNKNOWN);
++ kfree(idx);
++ if (err)
++ return err;
+
-+ /* channel 0: waveform mode, input mclk/8, clock TIOA0 on overflow */
-+ __raw_writel(best_divisor_idx /* likely divide-by-8 */
-+ | ATMEL_TC_WAVE
-+ | ATMEL_TC_WAVESEL_UP /* free-run */
-+ | ATMEL_TC_ACPA_SET /* TIOA0 rises at 0 */
-+ | ATMEL_TC_ACPC_CLEAR, /* (duty cycle 50%) */
-+ tcaddr + ATMEL_TC_REG(0, CMR));
-+ __raw_writel(0x0000, tcaddr + ATMEL_TC_REG(0, RA));
-+ __raw_writel(0x8000, tcaddr + ATMEL_TC_REG(0, RC));
-+ __raw_writel(0xff, tcaddr + ATMEL_TC_REG(0, IDR)); /* no irqs */
-+ __raw_writel(ATMEL_TC_CLKEN, tcaddr + ATMEL_TC_REG(0, CCR));
++ dbg_gen("default root indexing node created LEB %d:0",
++ main_first + DEFAULT_IDX_LEB);
+
-+ /* channel 1: waveform mode, input TIOA0 */
-+ __raw_writel(ATMEL_TC_XC1 /* input: TIOA0 */
-+ | ATMEL_TC_WAVE
-+ | ATMEL_TC_WAVESEL_UP, /* free-run */
-+ tcaddr + ATMEL_TC_REG(1, CMR));
-+ __raw_writel(0xff, tcaddr + ATMEL_TC_REG(1, IDR)); /* no irqs */
-+ __raw_writel(ATMEL_TC_CLKEN, tcaddr + ATMEL_TC_REG(1, CCR));
++ /* Create default root inode */
++ tmp = ALIGN(UBIFS_INO_NODE_SZ, c->min_io_size);
++ ino = kzalloc(tmp, GFP_KERNEL);
++ if (!ino)
++ return -ENOMEM;
+
-+ /* chain channel 0 to channel 1, then reset all the timers */
-+ __raw_writel(ATMEL_TC_TC1XC1S_TIOA0, tcaddr + ATMEL_TC_BMR);
-+ __raw_writel(ATMEL_TC_SYNC, tcaddr + ATMEL_TC_BCR);
++ ino_key_init_flash(c, &ino->key, UBIFS_ROOT_INO);
++ ino->ch.node_type = UBIFS_INO_NODE;
++ ino->creat_sqnum = cpu_to_le64(++c->max_sqnum);
++ ino->nlink = cpu_to_le32(2);
++ tmp = cpu_to_le64(CURRENT_TIME_SEC.tv_sec);
++ ino->atime_sec = tmp;
++ ino->ctime_sec = tmp;
++ ino->mtime_sec = tmp;
++ ino->atime_nsec = 0;
++ ino->ctime_nsec = 0;
++ ino->mtime_nsec = 0;
++ ino->mode = cpu_to_le32(S_IFDIR | S_IRUGO | S_IWUSR | S_IXUGO);
++ ino->size = cpu_to_le64(UBIFS_INO_NODE_SZ);
++
++ /* Set compression enabled by default */
++ ino->flags = cpu_to_le32(UBIFS_COMPR_FL);
++
++ err = ubifs_write_node(c, ino, UBIFS_INO_NODE_SZ,
++ main_first + DEFAULT_DATA_LEB, 0,
++ UBI_UNKNOWN);
++ kfree(ino);
++ if (err)
++ return err;
+
-+ /* and away we go! */
-+ clocksource_register(&clksrc);
++ dbg_gen("root inode created at LEB %d:0",
++ main_first + DEFAULT_DATA_LEB);
+
-+ /* channel 2: periodic and oneshot timer support */
-+ setup_clkevents(tc, t0_clk, clk32k_divisor_idx);
++ /*
++ * The first node in the log has to be the commit start node. This is
++ * always the case during normal file-system operation. Write a fake
++ * commit start node to the log.
++ */
++ tmp = ALIGN(UBIFS_CS_NODE_SZ, c->min_io_size);
++ cs = kzalloc(tmp, GFP_KERNEL);
++ if (!cs)
++ return -ENOMEM;
+
++ cs->ch.node_type = UBIFS_CS_NODE;
++ err = ubifs_write_node(c, cs, UBIFS_CS_NODE_SZ, UBIFS_LOG_LNUM,
++ 0, UBI_UNKNOWN);
++ kfree(cs);
++
++ ubifs_msg("default file-system created");
+ return 0;
+}
-+arch_initcall(tcb_clksrc_init);
---- /dev/null
-+++ b/drivers/i2c/busses/i2c-atmeltwi.c
-@@ -0,0 +1,436 @@
-+/*
-+ * i2c Support for Atmel's Two-Wire Interface (TWI)
-+ *
-+ * Based on the work of Copyright (C) 2004 Rick Bronson
-+ * Converted to 2.6 by Andrew Victor <andrew at sanpeople.com>
-+ * Ported to AVR32 and heavily modified by Espen Krangnes
-+ * <ekrangnes at atmel.com>
-+ *
-+ * Copyright (C) 2006 Atmel Corporation
-+ *
-+ * Borrowed heavily from the original work by:
-+ * Copyright (C) 2000 Philip Edelbrock <phil at stimpy.netroedge.com>
-+ *
-+ * Partialy rewriten by Karel Hojdar <cmkaho at seznam.cz>
-+ * bugs removed, interrupt routine markedly rewritten
++
++/**
++ * validate_sb - validate superblock node.
++ * @c: UBIFS file-system description object
++ * @sup: superblock node
+ *
-+ * This program is free software; you can redistribute it and/or modify
-+ * it under the terms of the GNU General Public License as published by
-+ * the Free Software Foundation; either version 2 of the License, or
-+ * (at your option) any later version.
++ * This function validates superblock node @sup. Since most of data was read
++ * from the superblock and stored in @c, the function validates fields in @c
++ * instead. Returns zero in case of success and %-EINVAL in case of validation
++ * failure.
+ */
-+#undef VERBOSE_DEBUG
++static int validate_sb(struct ubifs_info *c, struct ubifs_sb_node *sup)
++{
++ long long max_bytes;
++ int err = 1;
+
-+#include <linux/module.h>
-+#include <linux/slab.h>
-+#include <linux/i2c.h>
-+#include <linux/init.h>
-+#include <linux/clk.h>
-+#include <linux/err.h>
-+#include <linux/interrupt.h>
-+#include <linux/platform_device.h>
-+#include <linux/completion.h>
-+#include <linux/io.h>
++ if (!c->key_hash) {
++ err = 2;
++ goto failed;
++ }
+
-+#include "i2c-atmeltwi.h"
++ if (sup->key_fmt != UBIFS_SIMPLE_KEY_FMT) {
++ err = 3;
++ goto failed;
++ }
+
-+static unsigned int baudrate = 100 * 1000;
-+module_param(baudrate, uint, S_IRUGO);
-+MODULE_PARM_DESC(baudrate, "The TWI baudrate");
++ if (le32_to_cpu(sup->min_io_size) != c->min_io_size) {
++ ubifs_err("min. I/O unit mismatch: %d in superblock, %d real",
++ le32_to_cpu(sup->min_io_size), c->min_io_size);
++ goto failed;
++ }
+
++ if (le32_to_cpu(sup->leb_size) != c->leb_size) {
++ ubifs_err("LEB size mismatch: %d in superblock, %d real",
++ le32_to_cpu(sup->leb_size), c->leb_size);
++ goto failed;
++ }
+
-+struct atmel_twi {
-+ void __iomem *regs;
-+ struct i2c_adapter adapter;
-+ struct clk *pclk;
-+ struct completion comp;
-+ u32 mask;
-+ u8 *buf;
-+ u16 len;
-+ u16 acks_left;
-+ int status;
-+ unsigned int irq;
++ if (c->leb_cnt < UBIFS_MIN_LEB_CNT || c->leb_cnt > c->vi.size) {
++ ubifs_err("bad LEB count: %d in superblock, %d on UBI volume, "
++ "%d minimum required", c->leb_cnt, c->vi.size,
++ UBIFS_MIN_LEB_CNT);
++ goto failed;
++ }
+
-+};
-+#define to_atmel_twi(adap) container_of(adap, struct atmel_twi, adapter)
++ if (c->max_leb_cnt < c->leb_cnt) {
++ ubifs_err("max. LEB count %d less than LEB count %d",
++ c->max_leb_cnt, c->leb_cnt);
++ goto failed;
++ }
+
-+/*
-+ * (Re)Initialize the TWI hardware registers.
-+ */
-+static int twi_hwinit(struct atmel_twi *twi)
-+{
-+ unsigned long cdiv, ckdiv = 0;
++ if (c->log_lebs < UBIFS_MIN_LOG_LEBS ||
++ c->lpt_lebs < UBIFS_MIN_LPT_LEBS ||
++ c->orph_lebs < UBIFS_MIN_ORPH_LEBS ||
++ c->main_lebs < UBIFS_MIN_MAIN_LEBS) {
++ err = 6;
++ goto failed;
++ }
+
-+ /* REVISIT: wait till SCL is high before resetting; otherwise,
-+ * some versions will wedge forever.
-+ */
++ if (c->main_lebs < UBIFS_MIN_MAIN_LEBS) {
++ err = 7;
++ goto failed;
++ }
+
-+ twi_writel(twi, IDR, ~0UL);
-+ twi_writel(twi, CR, TWI_BIT(SWRST)); /*Reset peripheral*/
-+ twi_readl(twi, SR);
++ if (c->max_bud_bytes < (long long)c->leb_size * UBIFS_MIN_BUD_LEBS ||
++ c->max_bud_bytes > (long long)c->leb_size * c->main_lebs) {
++ err = 8;
++ goto failed;
++ }
+
-+ cdiv = (clk_get_rate(twi->pclk) / (2 * baudrate)) - 4;
++ if (c->jhead_cnt < NONDATA_JHEADS_CNT + 1 ||
++ c->jhead_cnt > NONDATA_JHEADS_CNT + UBIFS_MAX_JHEADS) {
++ err = 9;
++ goto failed;
++ }
+
-+ while (cdiv > 255) {
-+ ckdiv++;
-+ cdiv = cdiv >> 1;
++ if (c->fanout < UBIFS_MIN_FANOUT ||
++ ubifs_idx_node_sz(c, c->fanout) > c->leb_size) {
++ err = 10;
++ goto failed;
+ }
+
-+ /* REVISIT: there are various errata to consider re CDIV and CHDIV
-+ * here, at least on at91 parts.
-+ */
++ if (c->lsave_cnt < 0 || (c->lsave_cnt > DEFAULT_LSAVE_CNT &&
++ c->lsave_cnt > c->max_leb_cnt - UBIFS_SB_LEBS - UBIFS_MST_LEBS -
++ c->log_lebs - c->lpt_lebs - c->orph_lebs)) {
++ err = 11;
++ goto failed;
++ }
++
++ if (UBIFS_SB_LEBS + UBIFS_MST_LEBS + c->log_lebs + c->lpt_lebs +
++ c->orph_lebs + c->main_lebs != c->leb_cnt) {
++ err = 12;
++ goto failed;
++ }
++
++ if (c->default_compr < 0 || c->default_compr >= UBIFS_COMPR_TYPES_CNT) {
++ err = 13;
++ goto failed;
++ }
++
++ max_bytes = c->main_lebs * (long long)c->leb_size;
++ if (c->rp_size < 0 || max_bytes < c->rp_size) {
++ err = 14;
++ goto failed;
++ }
++
++ if (le32_to_cpu(sup->time_gran) > 1000000000 ||
++ le32_to_cpu(sup->time_gran) < 1) {
++ err = 15;
++ goto failed;
++ }
+
-+ if (ckdiv > 7)
-+ return -EINVAL;
-+ else
-+ twi_writel(twi, CWGR, TWI_BF(CKDIV, ckdiv)
-+ | TWI_BF(CHDIV, cdiv)
-+ | TWI_BF(CLDIV, cdiv));
+ return 0;
++
++failed:
++ ubifs_err("bad superblock, error %d", err);
++ dbg_dump_node(c, sup);
++ return -EINVAL;
+}
+
-+/*
-+ * Waits for the i2c status register to set the specified bitmask
-+ * Returns 0 if timed out ... ~100ms is much longer than the SMBus
-+ * limit, but I2C has no limit at all.
++/**
++ * ubifs_read_sb_node - read superblock node.
++ * @c: UBIFS file-system description object
++ *
++ * This function returns a pointer to the superblock node or a negative error
++ * code.
+ */
-+static int twi_complete(struct atmel_twi *twi, u32 mask)
++struct ubifs_sb_node *ubifs_read_sb_node(struct ubifs_info *c)
+{
-+ int timeout = msecs_to_jiffies(100);
++ struct ubifs_sb_node *sup;
++ int err;
+
-+ mask |= TWI_BIT(TXCOMP);
-+ twi->mask = mask | TWI_BIT(NACK) | TWI_BIT(OVRE);
-+ init_completion(&twi->comp);
++ sup = kmalloc(ALIGN(UBIFS_SB_NODE_SZ, c->min_io_size), GFP_NOFS);
++ if (!sup)
++ return ERR_PTR(-ENOMEM);
+
-+ twi_writel(twi, IER, mask);
++ err = ubifs_read_node(c, sup, UBIFS_SB_NODE, UBIFS_SB_NODE_SZ,
++ UBIFS_SB_LNUM, 0);
++ if (err) {
++ kfree(sup);
++ return ERR_PTR(err);
++ }
+
-+ if (!wait_for_completion_timeout(&twi->comp, timeout)) {
-+ /* RESET TWI interface */
-+ twi_writel(twi, CR, TWI_BIT(SWRST));
++ return sup;
++}
+
-+ /* Reinitialize TWI */
-+ twi_hwinit(twi);
++/**
++ * ubifs_write_sb_node - write superblock node.
++ * @c: UBIFS file-system description object
++ * @sup: superblock node read with 'ubifs_read_sb_node()'
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++int ubifs_write_sb_node(struct ubifs_info *c, struct ubifs_sb_node *sup)
++{
++ int len = ALIGN(UBIFS_SB_NODE_SZ, c->min_io_size);
+
-+ return -ETIMEDOUT;
-+ }
-+ return 0;
++ ubifs_prepare_node(c, sup, UBIFS_SB_NODE_SZ, 1);
++ return ubi_leb_change(c->ubi, UBIFS_SB_LNUM, sup, len, UBI_LONGTERM);
+}
+
-+/*
-+ * Generic i2c master transfer entrypoint.
++/**
++ * ubifs_read_superblock - read superblock.
++ * @c: UBIFS file-system description object
++ *
++ * This function finds, reads and checks the superblock. If an empty UBI volume
++ * is being mounted, this function creates default superblock. Returns zero in
++ * case of success, and a negative error code in case of failure.
+ */
-+static int twi_xfer(struct i2c_adapter *adap, struct i2c_msg *pmsg, int num)
++int ubifs_read_superblock(struct ubifs_info *c)
+{
-+ struct atmel_twi *twi = to_atmel_twi(adap);
-+ int i;
++ int err, sup_flags;
++ struct ubifs_sb_node *sup;
+
-+ dev_dbg(&adap->dev, "twi_xfer: processing %d messages:\n", num);
++ if (c->empty) {
++ err = create_default_filesystem(c);
++ if (err)
++ return err;
++ }
+
-+ twi->status = 0;
-+ for (i = 0; i < num; i++, pmsg++) {
-+ twi->len = pmsg->len;
-+ twi->buf = pmsg->buf;
-+ twi->acks_left = pmsg->len;
-+ twi_writel(twi, MMR, TWI_BF(DADR, pmsg->addr) |
-+ (pmsg->flags & I2C_M_RD ? TWI_BIT(MREAD) : 0));
-+ twi_writel(twi, IADR, TWI_BF(IADR, pmsg->addr));
++ sup = ubifs_read_sb_node(c);
++ if (IS_ERR(sup))
++ return PTR_ERR(sup);
+
-+ dev_dbg(&adap->dev,
-+ "#%d: %s %d byte%s %s dev 0x%02x\n",
-+ i,
-+ pmsg->flags & I2C_M_RD ? "reading" : "writing",
-+ pmsg->len,
-+ pmsg->len > 1 ? "s" : "",
-+ pmsg->flags & I2C_M_RD ? "from" : "to", pmsg->addr);
++ /*
++ * The software supports all previous versions but not future versions,
++ * due to the unavailability of time-travelling equipment.
++ */
++ c->fmt_version = le32_to_cpu(sup->fmt_version);
++ if (c->fmt_version > UBIFS_FORMAT_VERSION) {
++ ubifs_err("on-flash format version is %d, but software only "
++ "supports up to version %d", c->fmt_version,
++ UBIFS_FORMAT_VERSION);
++ err = -EINVAL;
++ goto out;
++ }
+
-+ /* enable */
-+ twi_writel(twi, CR, TWI_BIT(MSEN));
++ if (c->fmt_version < 3) {
++ ubifs_err("on-flash format version %d is not supported",
++ c->fmt_version);
++ err = -EINVAL;
++ goto out;
++ }
+
-+ if (pmsg->flags & I2C_M_RD) {
-+ /* cleanup after previous RX overruns */
-+ while (twi_readl(twi, SR) & TWI_BIT(RXRDY))
-+ twi_readl(twi, RHR);
++ switch (sup->key_hash) {
++ case UBIFS_KEY_HASH_R5:
++ c->key_hash = key_r5_hash;
++ c->key_hash_type = UBIFS_KEY_HASH_R5;
++ break;
+
-+ if (twi->len == 1)
-+ twi_writel(twi, CR,
-+ TWI_BIT(START) | TWI_BIT(STOP));
-+ else
-+ twi_writel(twi, CR, TWI_BIT(START));
++ case UBIFS_KEY_HASH_TEST:
++ c->key_hash = key_test_hash;
++ c->key_hash_type = UBIFS_KEY_HASH_TEST;
++ break;
++ };
+
-+ if (twi_complete(twi, TWI_BIT(RXRDY)) == -ETIMEDOUT) {
-+ dev_dbg(&adap->dev, "RX[%d] timeout. "
-+ "Stopped with %d bytes left\n",
-+ i, twi->acks_left);
-+ return -ETIMEDOUT;
-+ }
-+ } else {
-+ twi_writel(twi, THR, twi->buf[0]);
-+ twi->acks_left--;
-+ /* REVISIT: some chips don't start automagically:
-+ * twi_writel(twi, CR, TWI_BIT(START));
-+ */
-+ if (twi_complete(twi, TWI_BIT(TXRDY)) == -ETIMEDOUT) {
-+ dev_dbg(&adap->dev, "TX[%d] timeout. "
-+ "Stopped with %d bytes left\n",
-+ i, twi->acks_left);
-+ return -ETIMEDOUT;
-+ }
-+ /* REVISIT: an erratum workaround may be needed here;
-+ * see sam9261 "STOP not generated" (START either).
-+ */
++ c->key_fmt = sup->key_fmt;
++
++ switch (c->key_fmt) {
++ case UBIFS_SIMPLE_KEY_FMT:
++ c->key_len = UBIFS_SK_LEN;
++ break;
++ default:
++ ubifs_err("unsupported key format");
++ err = -EINVAL;
++ goto out;
++ }
++
++ c->leb_cnt = le32_to_cpu(sup->leb_cnt);
++ c->max_leb_cnt = le32_to_cpu(sup->max_leb_cnt);
++ c->max_bud_bytes = le64_to_cpu(sup->max_bud_bytes);
++ c->log_lebs = le32_to_cpu(sup->log_lebs);
++ c->lpt_lebs = le32_to_cpu(sup->lpt_lebs);
++ c->orph_lebs = le32_to_cpu(sup->orph_lebs);
++ c->jhead_cnt = le32_to_cpu(sup->jhead_cnt) + NONDATA_JHEADS_CNT;
++ c->fanout = le32_to_cpu(sup->fanout);
++ c->lsave_cnt = le32_to_cpu(sup->lsave_cnt);
++ c->default_compr = le16_to_cpu(sup->default_compr);
++ c->rp_size = le64_to_cpu(sup->rp_size);
++ c->rp_uid = le32_to_cpu(sup->rp_uid);
++ c->rp_gid = le32_to_cpu(sup->rp_gid);
++ sup_flags = le32_to_cpu(sup->flags);
++
++ c->vfs_sb->s_time_gran = le32_to_cpu(sup->time_gran);
++
++ memcpy(&c->uuid, &sup->uuid, 16);
++
++ c->big_lpt = !!(sup_flags & UBIFS_FLG_BIGLPT);
++
++ /* Automatically increase file system size to the maximum size */
++ c->old_leb_cnt = c->leb_cnt;
++ if (c->leb_cnt < c->vi.size && c->leb_cnt < c->max_leb_cnt) {
++ c->leb_cnt = min_t(int, c->max_leb_cnt, c->vi.size);
++ if (c->vfs_sb->s_flags & MS_RDONLY)
++ dbg_mnt("Auto resizing (ro) from %d LEBs to %d LEBs",
++ c->old_leb_cnt, c->leb_cnt);
++ else {
++ dbg_mnt("Auto resizing (sb) from %d LEBs to %d LEBs",
++ c->old_leb_cnt, c->leb_cnt);
++ sup->leb_cnt = cpu_to_le32(c->leb_cnt);
++ err = ubifs_write_sb_node(c, sup);
++ if (err)
++ goto out;
++ c->old_leb_cnt = c->leb_cnt;
+ }
++ }
++
++ c->log_bytes = (long long)c->log_lebs * c->leb_size;
++ c->log_last = UBIFS_LOG_LNUM + c->log_lebs - 1;
++ c->lpt_first = UBIFS_LOG_LNUM + c->log_lebs;
++ c->lpt_last = c->lpt_first + c->lpt_lebs - 1;
++ c->orph_first = c->lpt_last + 1;
++ c->orph_last = c->orph_first + c->orph_lebs - 1;
++ c->main_lebs = c->leb_cnt - UBIFS_SB_LEBS - UBIFS_MST_LEBS;
++ c->main_lebs -= c->log_lebs + c->lpt_lebs + c->orph_lebs;
++ c->main_first = c->leb_cnt - c->main_lebs;
++ c->report_rp_size = ubifs_reported_space(c, c->rp_size);
++
++ err = validate_sb(c, sup);
++out:
++ kfree(sup);
++ return err;
++}
+diff --exclude=.git -urN linux-2.6.25.6/fs/ubifs/scan.c avr32-2.6/fs/ubifs/scan.c
+--- linux-2.6.25.6/fs/ubifs/scan.c 1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/fs/ubifs/scan.c 2008-06-12 15:09:45.515816461 +0200
+@@ -0,0 +1,362 @@
++/*
++ * This file is part of UBIFS.
++ *
++ * Copyright (C) 2006-2008 Nokia Corporation
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published by
++ * the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but WITHOUT
++ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
++ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
++ * more details.
++ *
++ * You should have received a copy of the GNU General Public License along with
++ * this program; if not, write to the Free Software Foundation, Inc., 51
++ * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
++ *
++ * Authors: Adrian Hunter
++ * Artem Bityutskiy (Битюцкий Артём)
++ */
+
-+ /* Disable TWI interface */
-+ twi_writel(twi, CR, TWI_BIT(MSDIS));
++/*
++ * This file implements the scan which is a general-purpose function for
++ * determining what nodes are in an eraseblock. The scan is used to replay the
++ * journal, to do garbage collection. for the TNC in-the-gaps method, and by
++ * debugging functions.
++ */
+
-+ if (twi->status)
-+ return twi->status;
++#include "ubifs.h"
+
-+ /* WARNING: This driver lies about properly supporting
-+ * repeated start, or it would *ALWAYS* return here. It
-+ * has issued a STOP. Continuing is a false claim -- that
-+ * a second (or third, etc.) message is part of the same
-+ * "combined" (no STOPs between parts) message.
-+ */
++/**
++ * scan_padding_bytes - scan for padding bytes.
++ * @buf: buffer to scan
++ * @len: length of buffer
++ *
++ * This function returns the number of padding bytes on success and
++ * %SCANNED_GARBAGE on failure.
++ */
++static int scan_padding_bytes(void *buf, int len)
++{
++ int pad_len = 0, max_pad_len = min_t(int, UBIFS_PAD_NODE_SZ, len);
++ uint8_t *p = buf;
+
-+ } /* end cur msg */
++ dbg_scan("not a node");
+
-+ return i;
-+}
++ while (pad_len < max_pad_len && *p++ == UBIFS_PADDING_BYTE)
++ pad_len += 1;
+
++ if (!pad_len || (pad_len & 7))
++ return SCANNED_GARBAGE;
+
-+static irqreturn_t twi_interrupt(int irq, void *dev_id)
++ dbg_scan("%d padding bytes", pad_len);
++
++ return pad_len;
++}
++
++/**
++ * ubifs_scan_a_node - scan for a node or padding.
++ * @c: UBIFS file-system description object
++ * @buf: buffer to scan
++ * @len: length of buffer
++ * @lnum: logical eraseblock number
++ * @offs: offset within the logical eraseblock
++ * @quiet: print no messages
++ *
++ * This function returns a scanning code to indicate what was scanned.
++ */
++int ubifs_scan_a_node(const struct ubifs_info *c, void *buf, int len, int lnum,
++ int offs, int quiet)
+{
-+ struct atmel_twi *twi = dev_id;
-+ int status = twi_readl(twi, SR);
++ struct ubifs_ch *ch = buf;
++ uint32_t magic;
+
-+ /* Save state for later debug prints */
-+ int old_status = status;
++ magic = le32_to_cpu(ch->magic);
+
-+ if (twi->mask & status) {
++ if (magic == 0xFFFFFFFF) {
++ dbg_scan("hit empty space");
++ return SCANNED_EMPTY_SPACE;
++ }
+
-+ status &= twi->mask;
++ if (magic != UBIFS_NODE_MAGIC)
++ return scan_padding_bytes(buf, len);
+
-+ if (status & TWI_BIT(RXRDY)) {
-+ if ((status & TWI_BIT(OVRE)) && twi->acks_left) {
-+ /* Note weakness in fault reporting model:
-+ * we can't say "the first N of these data
-+ * bytes are valid".
-+ */
-+ dev_err(&twi->adapter.dev,
-+ "OVERRUN RX! %04x, lost %d\n",
-+ old_status, twi->acks_left);
-+ twi->acks_left = 0;
-+ twi_writel(twi, CR, TWI_BIT(STOP));
-+ twi->status = -EOVERFLOW;
-+ } else if (twi->acks_left > 0) {
-+ twi->buf[twi->len - twi->acks_left] =
-+ twi_readl(twi, RHR);
-+ twi->acks_left--;
-+ }
-+ if (status & TWI_BIT(TXCOMP))
-+ goto done;
-+ if (twi->acks_left == 1)
-+ twi_writel(twi, CR, TWI_BIT(STOP));
++ if (len < UBIFS_CH_SZ)
++ return SCANNED_GARBAGE;
+
-+ } else if (status & (TWI_BIT(NACK) | TWI_BIT(TXCOMP))) {
-+ goto done;
++ dbg_scan("scanning %s", dbg_ntype(ch->node_type));
+
-+ } else if (status & TWI_BIT(TXRDY)) {
-+ if (twi->acks_left > 0) {
-+ twi_writel(twi, THR,
-+ twi->buf[twi->len - twi->acks_left]);
-+ twi->acks_left--;
-+ } else
-+ twi_writel(twi, CR, TWI_BIT(STOP));
++ if (ubifs_check_node(c, buf, lnum, offs, quiet))
++ return SCANNED_A_CORRUPT_NODE;
++
++ if (ch->node_type == UBIFS_PAD_NODE) {
++ struct ubifs_pad_node *pad = buf;
++ int pad_len = le32_to_cpu(pad->pad_len);
++ int node_len = le32_to_cpu(ch->len);
++
++ /* Validate the padding node */
++ if (pad_len < 0 ||
++ offs + node_len + pad_len > c->leb_size) {
++ if (!quiet) {
++ ubifs_err("bad pad node at LEB %d:%d",
++ lnum, offs);
++ dbg_dump_node(c, pad);
++ }
++ return SCANNED_A_BAD_PAD_NODE;
+ }
+
-+ if (twi->acks_left == 0)
-+ twi_writel(twi, IDR, ~TWI_BIT(TXCOMP));
++ /* Make the node pads to 8-byte boundary */
++ if ((node_len + pad_len) & 7) {
++ if (!quiet) {
++ dbg_err("bad padding length %d - %d",
++ offs, offs + node_len + pad_len);
++ }
++ return SCANNED_A_BAD_PAD_NODE;
++ }
++
++ dbg_scan("%d bytes padded, offset now %d",
++ pad_len, ALIGN(offs + node_len + pad_len, 8));
++
++ return node_len + pad_len;
+ }
+
-+ /* enabling this message helps trigger overruns/underruns ... */
-+ dev_vdbg(&twi->adapter.dev,
-+ "ISR: SR 0x%04X, mask 0x%04X, acks %i\n",
-+ old_status,
-+ twi->acks_left ? twi->mask : TWI_BIT(TXCOMP),
-+ twi->acks_left);
++ return SCANNED_A_NODE;
++}
+
-+ return IRQ_HANDLED;
++/**
++ * ubifs_start_scan - create LEB scanning information at start of scan.
++ * @c: UBIFS file-system description object
++ * @lnum: logical eraseblock number
++ * @offs: offset to start at (usually zero)
++ * @sbuf: scan buffer (must be c->leb_size)
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++struct ubifs_scan_leb *ubifs_start_scan(const struct ubifs_info *c, int lnum,
++ int offs, void *sbuf)
++{
++ struct ubifs_scan_leb *sleb;
++ int err;
+
-+done:
-+ /* Note weak fault reporting model: we can't report how many
-+ * bytes we sent before the NAK, or let upper layers choose
-+ * whether to continue. The I2C stack doesn't allow that...
-+ */
-+ if (status & TWI_BIT(NACK)) {
-+ dev_dbg(&twi->adapter.dev, "NACK received! %d to go\n",
-+ twi->acks_left);
-+ twi->status = -EPIPE;
++ dbg_scan("scan LEB %d:%d", lnum, offs);
+
-+ /* TX underrun morphs automagically into a premature STOP;
-+ * we'll probably observe UVRE even when it's not documented.
-+ */
-+ } else if (twi->acks_left && (twi->mask & TWI_BIT(TXRDY))) {
-+ dev_err(&twi->adapter.dev, "UNDERRUN TX! %04x, %d to go\n",
-+ old_status, twi->acks_left);
-+ twi->status = -ENOSR;
-+ }
++ sleb = kzalloc(sizeof(struct ubifs_scan_leb), GFP_NOFS);
++ if (!sleb)
++ return ERR_PTR(-ENOMEM);
+
-+ twi_writel(twi, IDR, ~0UL);
-+ complete(&twi->comp);
++ sleb->lnum = lnum;
++ INIT_LIST_HEAD(&sleb->nodes);
++ sleb->buf = sbuf;
+
-+ dev_dbg(&twi->adapter.dev, "ISR: SR 0x%04X, acks %i --> %d\n",
-+ old_status, twi->acks_left, twi->status);
++ err = ubi_read(c->ubi, lnum, sbuf + offs, offs, c->leb_size - offs);
++ if (err && err != -EBADMSG) {
++ ubifs_err("cannot read %d bytes from LEB %d:%d,"
++ " error %d", c->leb_size - offs, lnum, offs, err);
++ kfree(sleb);
++ return ERR_PTR(err);
++ }
+
-+ return IRQ_HANDLED;
++ if (err == -EBADMSG)
++ sleb->ecc = 1;
++
++ return sleb;
+}
+
++/**
++ * ubifs_end_scan - update LEB scanning information at end of scan.
++ * @c: UBIFS file-system description object
++ * @sleb: scanning information
++ * @lnum: logical eraseblock number
++ * @offs: offset to start at (usually zero)
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++void ubifs_end_scan(const struct ubifs_info *c, struct ubifs_scan_leb *sleb,
++ int lnum, int offs)
++{
++ lnum = lnum;
++ dbg_scan("stop scanning LEB %d at offset %d", lnum, offs);
++ ubifs_assert(offs % c->min_io_size == 0);
++
++ sleb->endpt = ALIGN(offs, c->min_io_size);
++}
+
-+/*
-+ * Return list of supported functionality.
++/**
++ * ubifs_add_snod - add a scanned node to LEB scanning information.
++ * @c: UBIFS file-system description object
++ * @sleb: scanning information
++ * @buf: buffer containing node
++ * @offs: offset of node on flash
+ *
-+ * NOTE: see warning above about repeated starts; this driver is falsely
-+ * claiming to support "combined" transfers. The mid-message STOPs mean
-+ * some slaves will never work with this driver. (Use i2c-gpio...)
++ * This function returns %0 on success and a negative error code on failure.
+ */
-+static u32 twi_func(struct i2c_adapter *adapter)
++int ubifs_add_snod(const struct ubifs_info *c, struct ubifs_scan_leb *sleb,
++ void *buf, int offs)
+{
-+ return (I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL)
-+ & ~I2C_FUNC_SMBUS_QUICK;
++ struct ubifs_ch *ch = buf;
++ struct ubifs_ino_node *ino = buf;
++ struct ubifs_scan_node *snod;
++
++ snod = kzalloc(sizeof(struct ubifs_scan_node), GFP_NOFS);
++ if (!snod)
++ return -ENOMEM;
++
++ snod->sqnum = le64_to_cpu(ch->sqnum);
++ snod->type = ch->node_type;
++ snod->offs = offs;
++ snod->len = le32_to_cpu(ch->len);
++ snod->node = buf;
++
++ switch (ch->node_type) {
++ case UBIFS_INO_NODE:
++ case UBIFS_DENT_NODE:
++ case UBIFS_XENT_NODE:
++ case UBIFS_DATA_NODE:
++ case UBIFS_TRUN_NODE:
++ /*
++ * The key is in the same place in all keyed
++ * nodes.
++ */
++ key_read(c, &ino->key, &snod->key);
++ break;
++ }
++ list_add_tail(&snod->list, &sleb->nodes);
++ sleb->nodes_cnt += 1;
++ return 0;
+}
+
-+static struct i2c_algorithm twi_algorithm = {
-+ .master_xfer = twi_xfer,
-+ .functionality = twi_func,
-+};
++/**
++ * ubifs_scanned_corruption - print information after UBIFS scanned corruption.
++ * @c: UBIFS file-system description object
++ * @lnum: LEB number of corruption
++ * @offs: offset of corruption
++ * @buf: buffer containing corruption
++ */
++void ubifs_scanned_corruption(const struct ubifs_info *c, int lnum, int offs,
++ void *buf)
++{
++ int len;
+
-+/*
-+ * Main initialization routine.
++ ubifs_err("corrupted data at LEB %d:%d", lnum, offs);
++ if (dbg_failure_mode)
++ return;
++ len = c->leb_size - offs;
++ if (len > 4096)
++ len = 4096;
++ dbg_err("first %d bytes from LEB %d:%d", len, lnum, offs);
++ print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, 32, 4, buf, len, 1);
++}
++
++/**
++ * ubifs_scan - scan a logical eraseblock.
++ * @c: UBIFS file-system description object
++ * @lnum: logical eraseblock number
++ * @offs: offset to start at (usually zero)
++ * @sbuf: scan buffer (must be c->leb_size)
++ *
++ * This function scans LEB number @lnum and returns complete information about
++ * its contents. Returns an error code in case of failure.
+ */
-+static int __init twi_probe(struct platform_device *pdev)
++struct ubifs_scan_leb *ubifs_scan(const struct ubifs_info *c, int lnum,
++ int offs, void *sbuf)
+{
-+ struct atmel_twi *twi;
-+ struct resource *regs;
-+ struct clk *pclk;
-+ struct i2c_adapter *adapter;
-+ int rc, irq;
++ void *buf = sbuf + offs;
++ int err, len = c->leb_size - offs;
++ struct ubifs_scan_leb *sleb;
+
-+ regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-+ if (!regs)
-+ return -ENXIO;
++ sleb = ubifs_start_scan(c, lnum, offs, sbuf);
++ if (IS_ERR(sleb))
++ return sleb;
+
-+ pclk = clk_get(&pdev->dev, "twi_pclk");
-+ if (IS_ERR(pclk))
-+ return PTR_ERR(pclk);
-+ clk_enable(pclk);
++ while (len >= 8) {
++ struct ubifs_ch *ch = buf;
++ int node_len, ret;
+
-+ rc = -ENOMEM;
-+ twi = kzalloc(sizeof(struct atmel_twi), GFP_KERNEL);
-+ if (!twi) {
-+ dev_dbg(&pdev->dev, "can't allocate interface!\n");
-+ goto err_alloc_twi;
-+ }
++ dbg_scan("look at LEB %d:%d (%d bytes left)",
++ lnum, offs, len);
+
-+ twi->pclk = pclk;
-+ twi->regs = ioremap(regs->start, regs->end - regs->start + 1);
-+ if (!twi->regs)
-+ goto err_ioremap;
++ cond_resched();
+
-+ irq = platform_get_irq(pdev, 0);
-+ rc = request_irq(irq, twi_interrupt, 0, "twi", twi);
-+ if (rc) {
-+ dev_dbg(&pdev->dev, "can't bind irq!\n");
-+ goto err_irq;
-+ }
-+ twi->irq = irq;
++ ret = ubifs_scan_a_node(c, buf, len, lnum, offs, 0);
+
-+ rc = twi_hwinit(twi);
-+ if (rc) {
-+ dev_err(&pdev->dev, "Unable to set baudrate\n");
-+ goto err_hw_init;
++ if (ret > 0) {
++ /* Padding bytes or a valid padding node */
++ offs += ret;
++ buf += ret;
++ len -= ret;
++ continue;
++ }
++
++ if (ret == SCANNED_EMPTY_SPACE)
++ /* Empty space is checked later */
++ break;
++
++ switch (ret) {
++ case SCANNED_GARBAGE:
++ dbg_err("garbage");
++ goto corrupted;
++ case SCANNED_A_NODE:
++ break;
++ case SCANNED_A_CORRUPT_NODE:
++ case SCANNED_A_BAD_PAD_NODE:
++ dbg_err("bad node");
++ goto corrupted;
++ default:
++ dbg_err("unknown");
++ goto corrupted;
++ }
++
++ err = ubifs_add_snod(c, sleb, buf, offs);
++ if (err)
++ goto error;
++
++ node_len = ALIGN(le32_to_cpu(ch->len), 8);
++ offs += node_len;
++ buf += node_len;
++ len -= node_len;
+ }
+
-+ adapter = &twi->adapter;
-+ sprintf(adapter->name, "TWI");
-+ adapter->algo = &twi_algorithm;
-+ adapter->class = I2C_CLASS_ALL;
-+ adapter->nr = pdev->id;
-+ adapter->dev.parent = &pdev->dev;
++ if (offs % c->min_io_size)
++ goto corrupted;
+
-+ platform_set_drvdata(pdev, twi);
++ ubifs_end_scan(c, sleb, lnum, offs);
+
-+ rc = i2c_add_numbered_adapter(adapter);
-+ if (rc) {
-+ dev_dbg(&pdev->dev, "Adapter %s registration failed\n",
-+ adapter->name);
-+ goto err_register;
++ for (; len > 4; offs += 4, buf = buf + 4, len -= 4)
++ if (*(uint32_t *)buf != 0xffffffff)
++ break;
++ for (; len; offs++, buf++, len--)
++ if (*(uint8_t *)buf != 0xff) {
++ ubifs_err("corrupt empty space at LEB %d:%d",
++ lnum, offs);
++ goto corrupted;
++ }
++
++ return sleb;
++
++corrupted:
++ ubifs_scanned_corruption(c, lnum, offs, buf);
++ err = -EUCLEAN;
++error:
++ ubifs_err("LEB %d scanning failed", lnum);
++ ubifs_scan_destroy(sleb);
++ return ERR_PTR(err);
++}
++
++/**
++ * ubifs_scan_destroy - destroy LEB scanning information.
++ * @sleb: scanning information to free
++ */
++void ubifs_scan_destroy(struct ubifs_scan_leb *sleb)
++{
++ struct ubifs_scan_node *node;
++ struct list_head *head;
++
++ head = &sleb->nodes;
++ while (!list_empty(head)) {
++ node = list_entry(head->next, struct ubifs_scan_node, list);
++ list_del(&node->list);
++ kfree(node);
+ }
++ kfree(sleb);
++}
+diff --exclude=.git -urN linux-2.6.25.6/fs/ubifs/shrinker.c avr32-2.6/fs/ubifs/shrinker.c
+--- linux-2.6.25.6/fs/ubifs/shrinker.c 1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/fs/ubifs/shrinker.c 2008-06-12 15:09:45.515816461 +0200
+@@ -0,0 +1,322 @@
++/*
++ * This file is part of UBIFS.
++ *
++ * Copyright (C) 2006-2008 Nokia Corporation.
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published by
++ * the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but WITHOUT
++ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
++ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
++ * more details.
++ *
++ * You should have received a copy of the GNU General Public License along with
++ * this program; if not, write to the Free Software Foundation, Inc., 51
++ * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
++ *
++ * Authors: Artem Bityutskiy (Битюцкий Артём)
++ * Adrian Hunter
++ */
+
-+ dev_info(&pdev->dev,
-+ "Atmel TWI/I2C adapter (baudrate %dk) at 0x%08lx.\n",
-+ baudrate/1000, (unsigned long)regs->start);
++/*
++ * This file implements UBIFS shrinker which evicts clean znodes from the TNC
++ * tree when Linux VM needs more RAM.
++ *
++ * We do not implement any LRU lists to find oldest znodes to free because it
++ * would add additional overhead to the file system fast paths. So the shrinker
++ * just walks the TNC tree when searching for znodes to free.
++ *
++ * If the root of a TNC sub-tree is clean and old enough, then the children are
++ * also clean and old enough. So the shrinker walks the TNC in level order and
++ * dumps entire sub-trees.
++ *
++ * The age of znodes is just the time-stamp when they were last looked at.
++ * The current shrinker first tries to evict old znodes, then young ones.
++ *
++ * Since the shrinker is global, it has to protect against races with FS
++ * un-mounts, which is done by the 'ubifs_infos_lock' and 'c->umount_mutex'.
++ */
+
-+ return 0;
++#include "ubifs.h"
+
++/* List of all UBIFS file-system instances */
++LIST_HEAD(ubifs_infos);
+
-+err_register:
-+ platform_set_drvdata(pdev, NULL);
++/*
++ * We number each shrinker run and record the number on the ubifs_info structure
++ * so that we can easily work out which ubifs_info structures have already been
++ * done by the current run.
++ */
++static unsigned int shrinker_run_no;
+
-+err_hw_init:
-+ free_irq(irq, twi);
++/* Protects 'ubifs_infos' list */
++DEFINE_SPINLOCK(ubifs_infos_lock);
+
-+err_irq:
-+ iounmap(twi->regs);
++/* Global clean znode counter (for all mounted UBIFS instances) */
++atomic_long_t ubifs_clean_zn_cnt;
+
-+err_ioremap:
-+ kfree(twi);
++/**
++ * shrink_tnc - shrink TNC tree.
++ * @c: UBIFS file-system description object
++ * @nr: number of znodes to free
++ * @age: the age of znodes to free
++ * @contention: if any contention, this is set to %1
++ *
++ * This function traverses TNC tree and frees clean znodes. It does not free
++ * clean znodes which younger then @age. Returns number of freed znodes.
++ */
++static int shrink_tnc(struct ubifs_info *c, int nr, int age, int *contention)
++{
++ int total_freed = 0;
++ struct ubifs_znode *znode, *zprev;
++ int time = get_seconds();
+
-+err_alloc_twi:
-+ clk_disable(pclk);
-+ clk_put(pclk);
++ ubifs_assert(mutex_is_locked(&c->umount_mutex));
++ ubifs_assert(mutex_is_locked(&c->tnc_mutex));
+
-+ return rc;
-+}
++ if (!c->zroot.znode || atomic_long_read(&c->clean_zn_cnt) == 0)
++ return 0;
++
++ /*
++ * Traverse the TNC tree in levelorder manner, so that it is possible
++ * to destroy large sub-trees. Indeed, if a znode is old, then all its
++ * children are older or of the same age.
++ *
++ * Note, we are holding 'c->tnc_mutex', so we do not have to lock the
++ * 'c->space_lock' when _reading_ 'c->clean_zn_cnt', because it is
++ * changed only when the 'c->tnc_mutex' is held.
++ */
++ zprev = NULL;
++ znode = ubifs_tnc_levelorder_next(c->zroot.znode, NULL);
++ while (znode && total_freed < nr &&
++ atomic_long_read(&c->clean_zn_cnt) > 0) {
++ int freed;
+
-+static int __exit twi_remove(struct platform_device *pdev)
-+{
-+ struct atmel_twi *twi = platform_get_drvdata(pdev);
-+ int res;
++ /*
++ * If the znode is clean, but it is in the 'c->cnext' list, this
++ * means that this znode has just been written to flash as a
++ * part of commit and was marked clean. They will be removed
++ * from the list at end commit. We cannot change the list,
++ * because it is not protected by any mutex (design decision to
++ * make commit really independent and parallel to main I/O). So
++ * we just skip these znodes.
++ *
++ * Note, the 'clean_zn_cnt' counters are not updated until
++ * after the commit, so the UBIFS shrinker does not report
++ * the znodes which are in the 'c->cnext' list as freeable.
++ *
++ * Also note, if the root of a sub-tree is not in 'c->cnext',
++ * then the whole sub-tree is not in 'c->cnext' as well, so it
++ * is safe to dump whole sub-tree.
++ */
+
-+ platform_set_drvdata(pdev, NULL);
-+ res = i2c_del_adapter(&twi->adapter);
-+ twi_writel(twi, CR, TWI_BIT(MSDIS));
-+ iounmap(twi->regs);
-+ clk_disable(twi->pclk);
-+ clk_put(twi->pclk);
-+ free_irq(twi->irq, twi);
-+ kfree(twi);
++ if (znode->cnext) {
++ /*
++ * Very soon these znodes will be removed from the list
++ * and become freeable.
++ */
++ *contention = 1;
++ } else if (!ubifs_zn_dirty(znode) &&
++ abs(time - znode->time) >= age) {
++ if (znode->parent)
++ znode->parent->zbranch[znode->iip].znode = NULL;
++ else
++ c->zroot.znode = NULL;
++
++ freed = ubifs_destroy_tnc_subtree(znode);
++ atomic_long_sub(freed, &ubifs_clean_zn_cnt);
++ atomic_long_sub(freed, &c->clean_zn_cnt);
++ ubifs_assert(atomic_long_read(&c->clean_zn_cnt) >= 0);
++ total_freed += freed;
++ znode = zprev;
++ }
+
-+ return res;
-+}
++ if (unlikely(!c->zroot.znode))
++ break;
+
-+static struct platform_driver twi_driver = {
-+ .remove = __exit_p(twi_remove),
-+ .driver = {
-+ .name = "atmel_twi",
-+ .owner = THIS_MODULE,
-+ },
-+};
++ zprev = znode;
++ znode = ubifs_tnc_levelorder_next(c->zroot.znode, znode);
++ cond_resched();
++ }
+
-+static int __init atmel_twi_init(void)
-+{
-+ return platform_driver_probe(&twi_driver, twi_probe);
++ return total_freed;
+}
+
-+static void __exit atmel_twi_exit(void)
-+{
-+ platform_driver_unregister(&twi_driver);
++/**
++ * shrink_tnc_trees - shrink UBIFS TNC trees.
++ * @nr: number of znodes to free
++ * @age: the age of znodes to free
++ * @contention: if any contention, this is set to %1
++ *
++ * This function walks the list of mounted UBIFS file-systems and frees clean
++ * znodes which are older then @age, until at least @nr znodes are freed.
++ * Returns the number of freed znodes.
++ */
++static int shrink_tnc_trees(int nr, int age, int *contention)
++{
++ struct ubifs_info *c;
++ struct list_head *p;
++ unsigned int run_no;
++ int freed = 0;
++
++ spin_lock(&ubifs_infos_lock);
++ do
++ run_no = ++shrinker_run_no;
++ while (run_no == 0);
++ /* Iterate over all mounted UBIFS file-systems and try to shrink them */
++ p = ubifs_infos.next;
++ while (p != &ubifs_infos) {
++ c = list_entry(p, struct ubifs_info, infos_list);
++ /*
++ * We move the ones we do to the end of the list, so we stop
++ * when we see one we have already done.
++ */
++ if (c->shrinker_run_no == run_no)
++ break;
++ if (!mutex_trylock(&c->umount_mutex)) {
++ /* Some un-mount is in progress, try next FS */
++ *contention = 1;
++ p = p->next;
++ continue;
++ }
++ /*
++ * We're holding 'c->umount_mutex', so the file-system won't go
++ * away.
++ */
++ if (!mutex_trylock(&c->tnc_mutex)) {
++ mutex_unlock(&c->umount_mutex);
++ *contention = 1;
++ p = p->next;
++ continue;
++ }
++ spin_unlock(&ubifs_infos_lock);
++ /*
++ * OK, now we have TNC locked, the file-system cannot go away -
++ * it is safe to reap the cache.
++ */
++ c->shrinker_run_no = run_no;
++ freed += shrink_tnc(c, nr, age, contention);
++ mutex_unlock(&c->tnc_mutex);
++ spin_lock(&ubifs_infos_lock);
++ /* Get the next list element before we move this one */
++ p = p->next;
++ /*
++ * Move this one to the end of the list to provide some
++ * fairness.
++ */
++ list_del(&c->infos_list);
++ list_add_tail(&c->infos_list, &ubifs_infos);
++ mutex_unlock(&c->umount_mutex);
++ if (freed >= nr)
++ break;
++ }
++ spin_unlock(&ubifs_infos_lock);
++ return freed;
+}
+
-+module_init(atmel_twi_init);
-+module_exit(atmel_twi_exit);
-+
-+MODULE_AUTHOR("Espen Krangnes");
-+MODULE_DESCRIPTION("I2C driver for Atmel TWI");
-+MODULE_LICENSE("GPL");
---- /dev/null
-+++ b/drivers/i2c/busses/i2c-atmeltwi.h
-@@ -0,0 +1,117 @@
-+/*
-+ * Register definitions for the Atmel Two-Wire Interface
++/**
++ * kick_a_thread - kick a background thread to start commit.
++ *
++ * This function kicks a background thread to start background commit. Returns
++ * %-1 if a thread was kicked or there is another reason to assume the memory
++ * will soon be freed or become freeable. If there are no dirty znodes, returns
++ * %0.
+ */
++static int kick_a_thread(void)
++{
++ int i;
++ struct ubifs_info *c;
+
-+#ifndef __ATMELTWI_H__
-+#define __ATMELTWI_H__
++ /*
++ * Iterate over all mounted UBIFS file-systems and find out if there is
++ * already an ongoing commit operation there. If no, then iterate for
++ * the second time and initiate background commit.
++ */
++ spin_lock(&ubifs_infos_lock);
++ for (i = 0; i < 2; i++) {
++ list_for_each_entry(c, &ubifs_infos, infos_list) {
++ long dirty_zn_cnt;
++
++ if (!mutex_trylock(&c->umount_mutex)) {
++ /*
++ * Some un-mount is in progress, it will
++ * certainly free memory, so just return.
++ */
++ spin_unlock(&ubifs_infos_lock);
++ return -1;
++ }
+
-+/* TWI register offsets */
-+#define TWI_CR 0x0000
-+#define TWI_MMR 0x0004
-+#define TWI_SMR 0x0008
-+#define TWI_IADR 0x000c
-+#define TWI_CWGR 0x0010
-+#define TWI_SR 0x0020
-+#define TWI_IER 0x0024
-+#define TWI_IDR 0x0028
-+#define TWI_IMR 0x002c
-+#define TWI_RHR 0x0030
-+#define TWI_THR 0x0034
++ dirty_zn_cnt = atomic_long_read(&c->dirty_zn_cnt);
+
-+/* Bitfields in CR */
-+#define TWI_START_OFFSET 0
-+#define TWI_START_SIZE 1
-+#define TWI_STOP_OFFSET 1
-+#define TWI_STOP_SIZE 1
-+#define TWI_MSEN_OFFSET 2
-+#define TWI_MSEN_SIZE 1
-+#define TWI_MSDIS_OFFSET 3
-+#define TWI_MSDIS_SIZE 1
-+#define TWI_SVEN_OFFSET 4
-+#define TWI_SVEN_SIZE 1
-+#define TWI_SVDIS_OFFSET 5
-+#define TWI_SVDIS_SIZE 1
-+#define TWI_SWRST_OFFSET 7
-+#define TWI_SWRST_SIZE 1
++ if (!dirty_zn_cnt || c->cmt_state == COMMIT_BROKEN ||
++ c->ro_media) {
++ mutex_unlock(&c->umount_mutex);
++ continue;
++ }
+
-+/* Bitfields in MMR */
-+#define TWI_IADRSZ_OFFSET 8
-+#define TWI_IADRSZ_SIZE 2
-+#define TWI_MREAD_OFFSET 12
-+#define TWI_MREAD_SIZE 1
-+#define TWI_DADR_OFFSET 16
-+#define TWI_DADR_SIZE 7
++ if (c->cmt_state != COMMIT_RESTING) {
++ spin_unlock(&ubifs_infos_lock);
++ mutex_unlock(&c->umount_mutex);
++ return -1;
++ }
+
-+/* Bitfields in SMR */
-+#define TWI_SADR_OFFSET 16
-+#define TWI_SADR_SIZE 7
++ if (i == 1) {
++ list_del(&c->infos_list);
++ list_add_tail(&c->infos_list, &ubifs_infos);
++ spin_unlock(&ubifs_infos_lock);
+
-+/* Bitfields in IADR */
-+#define TWI_IADR_OFFSET 0
-+#define TWI_IADR_SIZE 24
++ ubifs_request_bg_commit(c);
++ mutex_unlock(&c->umount_mutex);
++ return -1;
++ }
++ mutex_unlock(&c->umount_mutex);
++ }
++ }
++ spin_unlock(&ubifs_infos_lock);
+
-+/* Bitfields in CWGR */
-+#define TWI_CLDIV_OFFSET 0
-+#define TWI_CLDIV_SIZE 8
-+#define TWI_CHDIV_OFFSET 8
-+#define TWI_CHDIV_SIZE 8
-+#define TWI_CKDIV_OFFSET 16
-+#define TWI_CKDIV_SIZE 3
++ return 0;
++}
+
-+/* Bitfields in SR */
-+#define TWI_TXCOMP_OFFSET 0
-+#define TWI_TXCOMP_SIZE 1
-+#define TWI_RXRDY_OFFSET 1
-+#define TWI_RXRDY_SIZE 1
-+#define TWI_TXRDY_OFFSET 2
-+#define TWI_TXRDY_SIZE 1
-+#define TWI_SVDIR_OFFSET 3
-+#define TWI_SVDIR_SIZE 1
-+#define TWI_SVACC_OFFSET 4
-+#define TWI_SVACC_SIZE 1
-+#define TWI_GCACC_OFFSET 5
-+#define TWI_GCACC_SIZE 1
-+#define TWI_OVRE_OFFSET 6
-+#define TWI_OVRE_SIZE 1
-+#define TWI_UNRE_OFFSET 7
-+#define TWI_UNRE_SIZE 1
-+#define TWI_NACK_OFFSET 8
-+#define TWI_NACK_SIZE 1
-+#define TWI_ARBLST_OFFSET 9
-+#define TWI_ARBLST_SIZE 1
++int ubifs_shrinker(int nr, gfp_t gfp_mask)
++{
++ int freed, contention = 0;
++ long clean_zn_cnt = atomic_long_read(&ubifs_clean_zn_cnt);
+
-+/* Bitfields in RHR */
-+#define TWI_RXDATA_OFFSET 0
-+#define TWI_RXDATA_SIZE 8
++ if (nr == 0)
++ return clean_zn_cnt;
+
-+/* Bitfields in THR */
-+#define TWI_TXDATA_OFFSET 0
-+#define TWI_TXDATA_SIZE 8
++ if (!clean_zn_cnt) {
++ /*
++ * No clean znodes, nothing to reap. All we can do in this case
++ * is to kick background threads to start commit, which will
++ * probably make clean znodes which, in turn, will be freeable.
++ * And we return -1 which means will make VM call us again
++ * later.
++ */
++ dbg_tnc("no clean znodes, kick a thread");
++ return kick_a_thread();
++ }
+
-+/* Constants for IADRSZ */
-+#define TWI_IADRSZ_NO_ADDR 0
-+#define TWI_IADRSZ_ONE_BYTE 1
-+#define TWI_IADRSZ_TWO_BYTES 2
-+#define TWI_IADRSZ_THREE_BYTES 3
++ freed = shrink_tnc_trees(nr, OLD_ZNODE_AGE, &contention);
++ if (freed >= nr)
++ goto out;
+
-+/* Bit manipulation macros */
-+#define TWI_BIT(name) \
-+ (1 << TWI_##name##_OFFSET)
-+#define TWI_BF(name, value) \
-+ (((value) & ((1 << TWI_##name##_SIZE) - 1)) \
-+ << TWI_##name##_OFFSET)
-+#define TWI_BFEXT(name, value) \
-+ (((value) >> TWI_##name##_OFFSET) \
-+ & ((1 << TWI_##name##_SIZE) - 1))
-+#define TWI_BFINS(name, value, old) \
-+ (((old) & ~(((1 << TWI_##name##_SIZE) - 1) \
-+ << TWI_##name##_OFFSET)) \
-+ | TWI_BF(name, (value)))
++ dbg_tnc("not enough old znodes, try to free young ones");
++ freed += shrink_tnc_trees(nr - freed, YOUNG_ZNODE_AGE, &contention);
++ if (freed >= nr)
++ goto out;
+
-+/* Register access macros */
-+#define twi_readl(port, reg) \
-+ __raw_readl((port)->regs + TWI_##reg)
-+#define twi_writel(port, reg, value) \
-+ __raw_writel((value), (port)->regs + TWI_##reg)
++ dbg_tnc("not enough young znodes, free all");
++ freed += shrink_tnc_trees(nr - freed, 0, &contention);
+
-+#endif /* __ATMELTWI_H__ */
---- a/drivers/i2c/busses/Kconfig
-+++ b/drivers/i2c/busses/Kconfig
-@@ -88,6 +88,14 @@
- to support combined I2C messages. Use the i2c-gpio driver
- unless your system can cope with those limitations.
-
-+config I2C_ATMELTWI
-+ tristate "Atmel Two-Wire Interface (TWI)"
-+ depends on I2C && (ARCH_AT91 || PLATFORM_AT32AP)
-+ help
-+ Atmel on-chip TWI controller. Say Y if you have an AT32 or
-+ AT91-based device and want to use its built-in TWI
-+ functionality.
++ if (!freed && contention) {
++ dbg_tnc("freed nothing, but contention");
++ return -1;
++ }
+
- config I2C_AU1550
- tristate "Au1550/Au1200 SMBus interface"
- depends on SOC_AU1550 || SOC_AU1200
---- a/drivers/i2c/busses/Makefile
-+++ b/drivers/i2c/busses/Makefile
-@@ -53,6 +53,7 @@
- obj-$(CONFIG_I2C_VOODOO3) += i2c-voodoo3.o
- obj-$(CONFIG_SCx200_ACB) += scx200_acb.o
- obj-$(CONFIG_SCx200_I2C) += scx200_i2c.o
-+obj-$(CONFIG_I2C_ATMELTWI) += i2c-atmeltwi.o
-
- ifeq ($(CONFIG_I2C_DEBUG_BUS),y)
- EXTRA_CFLAGS += -DDEBUG
---- /dev/null
-+++ b/drivers/input/serio/at32psif.c
-@@ -0,0 +1,351 @@
++out:
++ dbg_tnc("%d znodes were freed, requested %d", freed, nr);
++ return freed;
++}
+diff --exclude=.git -urN linux-2.6.25.6/fs/ubifs/super.c avr32-2.6/fs/ubifs/super.c
+--- linux-2.6.25.6/fs/ubifs/super.c 1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/fs/ubifs/super.c 2008-06-12 15:09:45.600758286 +0200
+@@ -0,0 +1,1969 @@
+/*
-+ * Copyright (C) 2007 Atmel Corporation
++ * This file is part of UBIFS.
+ *
-+ * Driver for the AT32AP700X PS/2 controller (PSIF).
++ * Copyright (C) 2006-2008 Nokia Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
-+ * under the terms of the GNU General Public License version 2 as published
-+ * by the Free Software Foundation.
-+ */
-+#include <linux/kernel.h>
-+#include <linux/module.h>
-+#include <linux/device.h>
-+#include <linux/init.h>
-+#include <linux/serio.h>
-+#include <linux/timer.h>
-+#include <linux/interrupt.h>
-+#include <linux/err.h>
-+#include <linux/io.h>
-+#include <linux/clk.h>
-+#include <linux/platform_device.h>
-+
-+#include "at32psif.h"
-+
-+#define PSIF_BUF_SIZE 16
-+
-+#define ring_is_empty(_psif) (_psif->head == _psif->tail)
-+#define ring_next_head(_psif) ((_psif->head + 1) & (PSIF_BUF_SIZE - 1))
-+#define ring_next_tail(_psif) ((_psif->tail + 1) & (PSIF_BUF_SIZE - 1))
-+
-+struct psif {
-+ struct platform_device *pdev;
-+ struct clk *pclk;
-+ struct serio *io;
-+ struct timer_list tx_timer;
-+ void __iomem *regs;
-+ unsigned int irq;
-+ unsigned int open;
-+ /* Prevent concurrent writes to circular buffer. */
-+ spinlock_t lock;
-+ unsigned int head;
-+ unsigned int tail;
-+ unsigned char buffer[PSIF_BUF_SIZE];
++ * under the terms of the GNU General Public License version 2 as published by
++ * the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but WITHOUT
++ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
++ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
++ * more details.
++ *
++ * You should have received a copy of the GNU General Public License along with
++ * this program; if not, write to the Free Software Foundation, Inc., 51
++ * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
++ *
++ * Authors: Artem Bityutskiy (Битюцкий Артём)
++ * Adrian Hunter
++ */
++
++/*
++ * This file implements UBIFS initialization and VFS superblock operations. Some
++ * initialization stuff which is rather large and complex is placed at
++ * corresponding subsystems, but most of it is here.
++ */
++
++#include <linux/init.h>
++#include <linux/slab.h>
++#include <linux/module.h>
++#include <linux/ctype.h>
++#include <linux/random.h>
++#include <linux/kthread.h>
++#include <linux/parser.h>
++#include <linux/seq_file.h>
++#include <linux/mount.h>
++#include "ubifs.h"
++
++/* Slab cache for UBIFS inodes */
++struct kmem_cache *ubifs_inode_slab;
++
++/* UBIFS TNC shrinker description */
++static struct shrinker ubifs_shrinker_info = {
++ .shrink = ubifs_shrinker,
++ .seeks = DEFAULT_SEEKS,
+};
+
-+static irqreturn_t psif_interrupt(int irq, void *_ptr)
++/**
++ * validate_inode - validate inode.
++ * @c: UBIFS file-system description object
++ * @inode: the inode to validate
++ *
++ * This is a helper function for 'ubifs_iget()' which validates various fields
++ * of a newly built inode to make sure they contain sane values and prevent
++ * possible vulnerabilities. Returns zero if the inode is all right and
++ * a non-zero error code if not.
++ */
++static int validate_inode(struct ubifs_info *c, const struct inode *inode)
+{
-+ struct psif *psif = _ptr;
-+ int retval = IRQ_NONE;
-+ unsigned int io_flags = 0;
-+ unsigned long status;
++ int err;
++ const struct ubifs_inode *ui = ubifs_inode(inode);
+
-+ status = psif_readl(psif, SR);
++ if (inode->i_size > c->max_inode_sz) {
++ ubifs_err("inode is too large (%lld)",
++ (long long)inode->i_size);
++ return 1;
++ }
+
-+ if (status & PSIF_BIT(RXRDY)) {
-+ unsigned char val = (unsigned char) psif_readl(psif, RHR);
++ if (ui->compr_type < 0 || ui->compr_type >= UBIFS_COMPR_TYPES_CNT) {
++ ubifs_err("unknown compression type %d", ui->compr_type);
++ return 2;
++ }
+
-+ if (status & PSIF_BIT(PARITY))
-+ io_flags |= SERIO_PARITY;
-+ if (status & PSIF_BIT(OVRUN))
-+ dev_err(&psif->pdev->dev, "overrun read error\n");
++ if (ui->xattr_cnt < 0)
++ return 3;
+
-+ serio_interrupt(psif->io, val, io_flags);
++ if (ui->xattr_size < 0)
++ return 4;
+
-+ retval = IRQ_HANDLED;
++ if (ui->xattr_names < 0 ||
++ ui->xattr_names + ui->xattr_cnt > XATTR_LIST_MAX)
++ return 5;
++
++ if (ui->data_len < 0 || ui->data_len > UBIFS_MAX_INO_DATA)
++ return 6;
++
++ if (!ubifs_compr_present(ui->compr_type)) {
++ ubifs_warn("inode %lu uses '%s' compression, but it was not "
++ "compiled in", inode->i_ino,
++ ubifs_compr_name(ui->compr_type));
+ }
+
-+ spin_lock(&psif->lock);
++ err = dbg_check_dir_size(c, inode);
++ return err;
++}
+
-+ if (status & PSIF_BIT(TXEMPTY)) {
-+ if (status & PSIF_BIT(NACK))
-+ dev_err(&psif->pdev->dev, "NACK error\n");
++struct inode *ubifs_iget(struct super_block *sb, unsigned long inum)
++{
++ int err;
++ union ubifs_key key;
++ struct ubifs_ino_node *ino;
++ struct ubifs_info *c = sb->s_fs_info;
++ struct inode *inode;
++ struct ubifs_inode *ui;
++
++ dbg_gen("inode %lu", inum);
++
++ inode = iget_locked(sb, inum);
++ if (!inode)
++ return ERR_PTR(-ENOMEM);
++ if (!(inode->i_state & I_NEW))
++ return inode;
++ ui = ubifs_inode(inode);
++
++ ino = kmalloc(UBIFS_MAX_INO_NODE_SZ, GFP_NOFS);
++ if (!ino) {
++ err = -ENOMEM;
++ goto out;
++ }
+
-+ psif_writel(psif, IDR, PSIF_BIT(TXEMPTY));
++ ino_key_init(c, &key, inode->i_ino);
+
-+ if (!ring_is_empty(psif))
-+ mod_timer(&psif->tx_timer,
-+ jiffies + msecs_to_jiffies(1));
++ err = ubifs_tnc_lookup(c, &key, ino);
++ if (err)
++ goto out_ino;
++
++ inode->i_flags |= (S_NOCMTIME | S_NOATIME);
++ inode->i_nlink = le32_to_cpu(ino->nlink);
++ inode->i_uid = le32_to_cpu(ino->uid);
++ inode->i_gid = le32_to_cpu(ino->gid);
++ inode->i_atime.tv_sec = (int64_t)le64_to_cpu(ino->atime_sec);
++ inode->i_atime.tv_nsec = le32_to_cpu(ino->atime_nsec);
++ inode->i_mtime.tv_sec = (int64_t)le64_to_cpu(ino->mtime_sec);
++ inode->i_mtime.tv_nsec = le32_to_cpu(ino->mtime_nsec);
++ inode->i_ctime.tv_sec = (int64_t)le64_to_cpu(ino->ctime_sec);
++ inode->i_ctime.tv_nsec = le32_to_cpu(ino->ctime_nsec);
++ inode->i_mode = le32_to_cpu(ino->mode);
++ inode->i_size = le64_to_cpu(ino->size);
++
++ ui->data_len = le32_to_cpu(ino->data_len);
++ ui->flags = le32_to_cpu(ino->flags);
++ ui->compr_type = le16_to_cpu(ino->compr_type);
++ ui->creat_sqnum = le64_to_cpu(ino->creat_sqnum);
++ ui->xattr_cnt = le32_to_cpu(ino->xattr_cnt);
++ ui->xattr_size = le64_to_cpu(ino->xattr_size);
++ ui->xattr_names = le32_to_cpu(ino->xattr_names);
++
++ err = validate_inode(c, inode);
++ if (err)
++ goto out_invalid;
++
++ /* Disable readahead */
++ inode->i_mapping->backing_dev_info = &ubifs_backing_dev_info;
++
++ switch (inode->i_mode & S_IFMT) {
++ case S_IFREG:
++ inode->i_mapping->a_ops = &ubifs_file_address_operations;
++ inode->i_op = &ubifs_file_inode_operations;
++ inode->i_fop = &ubifs_file_operations;
++ if (ui->data_len != 0) {
++ err = 10;
++ goto out_invalid;
++ }
++ break;
++ case S_IFDIR:
++ inode->i_op = &ubifs_dir_inode_operations;
++ inode->i_fop = &ubifs_dir_operations;
++ if (ui->data_len != 0) {
++ err = 11;
++ goto out_invalid;
++ }
++ break;
++ case S_IFLNK:
++ inode->i_op = &ubifs_symlink_inode_operations;
++ if (ui->data_len <= 0 || ui->data_len > UBIFS_MAX_INO_DATA) {
++ err = 12;
++ goto out_invalid;
++ }
++ ui->data = kmalloc(ui->data_len + 1, GFP_NOFS);
++ if (!ui->data) {
++ err = -ENOMEM;
++ goto out_ino;
++ }
++ memcpy(ui->data, ino->data, ui->data_len);
++ ((char *)ui->data)[ui->data_len] = '\0';
++ break;
++ case S_IFBLK:
++ case S_IFCHR:
++ {
++ dev_t rdev;
++ union ubifs_dev_desc *dev;
+
-+ retval = IRQ_HANDLED;
-+ }
++ ui->data = kmalloc(sizeof(union ubifs_dev_desc), GFP_NOFS);
++ if (!ui->data) {
++ err = -ENOMEM;
++ goto out_ino;
++ }
+
-+ spin_unlock(&psif->lock);
++ dev = (union ubifs_dev_desc *)ino->data;
++ if (ui->data_len == sizeof(dev->new))
++ rdev = new_decode_dev(le32_to_cpu(dev->new));
++ else if (ui->data_len == sizeof(dev->huge))
++ rdev = huge_decode_dev(le64_to_cpu(dev->huge));
++ else {
++ err = 13;
++ goto out_invalid;
++ }
++ memcpy(ui->data, ino->data, ui->data_len);
++ inode->i_op = &ubifs_file_inode_operations;
++ init_special_inode(inode, inode->i_mode, rdev);
++ break;
++ }
++ case S_IFSOCK:
++ case S_IFIFO:
++ inode->i_op = &ubifs_file_inode_operations;
++ init_special_inode(inode, inode->i_mode, 0);
++ if (ui->data_len != 0) {
++ err = 14;
++ goto out_invalid;
++ }
++ break;
++ default:
++ err = 15;
++ goto out_invalid;
++ }
+
-+ return retval;
++ kfree(ino);
++ ubifs_set_inode_flags(inode);
++ unlock_new_inode(inode);
++ return inode;
++
++out_invalid:
++ ubifs_err("inode %lu validation failed, error %d", inode->i_ino, err);
++ dbg_dump_node(c, ino);
++ dbg_dump_inode(c, inode);
++ err = -EINVAL;
++out_ino:
++ kfree(ino);
++out:
++ ubifs_err("failed to read inode %lu, error %d", inode->i_ino, err);
++ iget_failed(inode);
++ return ERR_PTR(err);
+}
+
-+static void psif_transmit_data(unsigned long data)
++static struct inode *ubifs_alloc_inode(struct super_block *sb)
+{
-+ struct psif *psif = (struct psif *)data;
-+ unsigned long flags;
++ struct ubifs_inode *ui;
+
-+ spin_lock_irqsave(&psif->lock, flags);
++ ui = kmem_cache_alloc(ubifs_inode_slab, GFP_NOFS);
++ if (!ui)
++ return NULL;
+
-+ psif_writel(psif, THR, psif->buffer[psif->tail]);
-+ psif->tail = ring_next_tail(psif);
++ memset((void *)ui + sizeof(struct inode), 0,
++ sizeof(struct ubifs_inode) - sizeof(struct inode));
++ mutex_init(&ui->budg_mutex);
++ return &ui->vfs_inode;
++};
+
-+ if (!ring_is_empty(psif))
-+ psif_writel(psif, IER, PSIF_BIT(TXEMPTY));
++static void ubifs_destroy_inode(struct inode *inode)
++{
++ struct ubifs_inode *ui = ubifs_inode(inode);
+
-+ spin_unlock_irqrestore(&psif->lock, flags);
++ kfree(ui->data);
++ kmem_cache_free(ubifs_inode_slab, inode);
+}
+
-+static int psif_write(struct serio *io, unsigned char val)
++/*
++ * Note, Linux write-back code calls this without 'i_mutex'.
++ */
++static int ubifs_write_inode(struct inode *inode, int wait)
+{
-+ struct psif *psif = io->port_data;
-+ unsigned long flags;
-+ unsigned int head;
++ int err;
++ struct ubifs_info *c = inode->i_sb->s_fs_info;
++ struct ubifs_inode *ui = ubifs_inode(inode);
++ struct ubifs_budget_req req = {.dd_growth = c->inode_budget,
++ .dirtied_ino_d = ui->data_len};
+
-+ spin_lock_irqsave(&psif->lock, flags);
++ ubifs_assert(!ui->xattr);
++ if (is_bad_inode(inode))
++ return 0;
+
-+ head = ring_next_head(psif);
++ mutex_lock(&ui->budg_mutex);
+
-+ if (head != psif->tail) {
-+ psif->buffer[psif->head] = val;
-+ psif->head = head;
-+ } else {
-+ dev_err(&psif->pdev->dev, "underrun write error\n");
++ /*
++ * Due to races between write-back forced by budgeting
++ * (see 'sync_some_inodes()') and pdflush write-back, the inode may
++ * have already been synchronized, do not do this again.
++ *
++ * This might also happen if it was synchronized in e.g. ubifs_link()',
++ * etc.
++ */
++ if (!ui->dirty) {
++ mutex_unlock(&ui->budg_mutex);
++ return 0;
+ }
+
-+ spin_unlock_irqrestore(&psif->lock, flags);
++ ubifs_assert(ui->budgeted);
++ dbg_gen("inode %lu", inode->i_ino);
+
-+ /* Make sure TXEMPTY interrupt is enabled. */
-+ psif_writel(psif, IER, PSIF_BIT(TXEMPTY));
++ err = ubifs_jnl_write_inode(c, inode, 0, IS_SYNC(inode));
++ if (err)
++ ubifs_err("can't write inode %lu, error %d", inode->i_ino, err);
+
-+ return 0;
++ ui->dirty = 0;
++ UBIFS_DBG(ui->budgeted = 0);
++ atomic_long_dec(&c->dirty_ino_cnt);
++
++ ubifs_release_budget(c, &req);
++ mutex_unlock(&ui->budg_mutex);
++
++ return err;
+}
+
-+static int psif_open(struct serio *io)
++static void ubifs_delete_inode(struct inode *inode)
+{
-+ struct psif *psif = io->port_data;
-+ int retval;
++ struct ubifs_info *c = inode->i_sb->s_fs_info;
++ struct ubifs_inode *ui = ubifs_inode(inode);
++ struct ubifs_budget_req req = {.dd_growth = c->inode_budget,
++ .dirtied_ino_d = ui->data_len};
++ int err;
+
-+ retval = clk_enable(psif->pclk);
-+ if (retval)
++ if (ui->xattr) {
++ /*
++ * Extended attribute inode deletions are fully handled in
++ * 'ubifs_removexattr()'. These inodes are special and have
++ * limited usage, so there is nothing to do here.
++ */
++ ubifs_assert(!ui->dirty);
+ goto out;
++ }
+
-+ psif_writel(psif, CR, PSIF_BIT(CR_TXEN) | PSIF_BIT(CR_RXEN));
-+ psif_writel(psif, IER, PSIF_BIT(RXRDY));
++ dbg_gen("inode %lu", inode->i_ino);
++ ubifs_assert(!atomic_read(&inode->i_count));
++ ubifs_assert(inode->i_nlink == 0);
+
-+ psif->open = 1;
++ truncate_inode_pages(&inode->i_data, 0);
++ if (is_bad_inode(inode))
++ goto out;
++
++ mutex_lock(&ui->budg_mutex);
++
++ inode->i_size = 0;
++
++ err = ubifs_jnl_write_inode(c, inode, 1, IS_SYNC(inode));
++ if (err)
++ /*
++ * Worst case we have a lost orphan inode wasting space, so a
++ * simple error message is ok here.
++ */
++ ubifs_err("can't write inode %lu, error %d", inode->i_ino, err);
++
++ if (ui->dirty) {
++ ubifs_assert(ui->budgeted);
++ atomic_long_dec(&c->dirty_ino_cnt);
++ ui->dirty = 0;
++ UBIFS_DBG(ui->budgeted = 0);
++ ubifs_release_budget(c, &req);
++ }
++
++ mutex_unlock(&ui->budg_mutex);
+out:
-+ return retval;
++ clear_inode(inode);
+}
+
-+static void psif_close(struct serio *io)
++static void ubifs_dirty_inode(struct inode *inode)
+{
-+ struct psif *psif = io->port_data;
++ struct ubifs_inode *ui = ubifs_inode(inode);
+
-+ psif->open = 0;
++ ubifs_assert(mutex_is_locked(&ui->budg_mutex));
++ if (!ui->dirty) {
++ struct ubifs_info *c = inode->i_sb->s_fs_info;
+
-+ psif_writel(psif, IDR, ~0UL);
-+ psif_writel(psif, CR, PSIF_BIT(CR_TXDIS) | PSIF_BIT(CR_RXDIS));
++ ui->dirty = 1;
++ atomic_long_inc(&c->dirty_ino_cnt);
++ dbg_gen("inode %lu", inode->i_ino);
++ }
++}
+
-+ clk_disable(psif->pclk);
++static int ubifs_statfs(struct dentry *dentry, struct kstatfs *buf)
++{
++ struct ubifs_info *c = dentry->d_sb->s_fs_info;
++ unsigned long long free;
++
++ free = ubifs_budg_get_free_space(c);
++ dbg_gen("free space %lld bytes (%lld blocks)",
++ free, free >> UBIFS_BLOCK_SHIFT);
++
++ buf->f_type = UBIFS_SUPER_MAGIC;
++ buf->f_bsize = UBIFS_BLOCK_SIZE;
++ buf->f_blocks = c->block_cnt;
++ buf->f_bfree = free >> UBIFS_BLOCK_SHIFT;
++ if (free > c->report_rp_size)
++ buf->f_bavail = (free - c->report_rp_size) >> UBIFS_BLOCK_SHIFT;
++ else
++ buf->f_bavail = 0;
++ buf->f_files = 0;
++ buf->f_ffree = 0;
++ buf->f_namelen = UBIFS_MAX_NLEN;
++
++ return 0;
+}
+
-+static void psif_set_prescaler(struct psif *psif)
++static int ubifs_show_options(struct seq_file *s, struct vfsmount *mnt)
+{
-+ unsigned long prscv;
-+ unsigned long rate = clk_get_rate(psif->pclk);
++ struct ubifs_info *c = mnt->mnt_sb->s_fs_info;
+
-+ /* PRSCV = Pulse length (100 us) * PSIF module frequency. */
-+ prscv = 100 * (rate / 1000000UL);
++ if (c->mount_opts.unmount_mode == 2)
++ seq_printf(s, ",fast_unmount");
++ else if (c->mount_opts.unmount_mode == 1)
++ seq_printf(s, ",norm_unmount");
+
-+ if (prscv > ((1<<PSIF_PSR_PRSCV_SIZE) - 1)) {
-+ prscv = (1<<PSIF_PSR_PRSCV_SIZE) - 1;
-+ dev_dbg(&psif->pdev->dev, "pclk too fast, "
-+ "prescaler set to max\n");
-+ }
++ return 0;
++}
+
-+ clk_enable(psif->pclk);
-+ psif_writel(psif, PSR, prscv);
-+ clk_disable(psif->pclk);
++static int ubifs_sync_fs(struct super_block *sb, int wait)
++{
++ struct ubifs_info *c = sb->s_fs_info;
++ int i, ret = 0, err;
++
++ if (c->jheads)
++ for (i = 0; i < c->jhead_cnt; i++) {
++ err = ubifs_wbuf_sync(&c->jheads[i].wbuf);
++ if (err && !ret)
++ ret = err;
++ }
++ /*
++ * We ought to call sync for c->ubi but it does not have one. If it had
++ * it would in turn call mtd->sync, however mtd operations are
++ * synchronous anyway, so we don't lose any sleep here.
++ */
++ return ret;
+}
+
-+static int __init psif_probe(struct platform_device *pdev)
++/**
++ * init_constants_early - initialize UBIFS constants.
++ * @c: UBIFS file-system description object
++ *
++ * This function initialize UBIFS constants which do not need the superblock to
++ * be read. It also checks that the UBI volume satisfies basic UBIFS
++ * requirements. Returns zero in case of success and a negative error code in
++ * case of failure.
++ */
++static int init_constants_early(struct ubifs_info *c)
+{
-+ struct resource *regs;
-+ struct psif *psif;
-+ struct serio *io;
-+ struct clk *pclk;
-+ int irq;
-+ int ret;
++ if (c->vi.corrupted) {
++ ubifs_warn("UBI volume is corrupted - read-only mode");
++ c->ro_media = 1;
++ }
+
-+ psif = kzalloc(sizeof(struct psif), GFP_KERNEL);
-+ if (!psif) {
-+ dev_dbg(&pdev->dev, "out of memory\n");
-+ ret = -ENOMEM;
-+ goto out;
++ if (c->di.ro_mode) {
++ ubifs_msg("read-only UBI device");
++ c->ro_media = 1;
+ }
-+ psif->pdev = pdev;
+
-+ io = kzalloc(sizeof(struct serio), GFP_KERNEL);
-+ if (!io) {
-+ dev_dbg(&pdev->dev, "out of memory\n");
-+ ret = -ENOMEM;
-+ goto out_free_psif;
++ if (c->vi.vol_type == UBI_STATIC_VOLUME) {
++ ubifs_msg("static UBI volume - read-only mode");
++ c->ro_media = 1;
+ }
-+ psif->io = io;
+
-+ regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-+ if (!regs) {
-+ dev_dbg(&pdev->dev, "no mmio resources defined\n");
-+ ret = -ENOMEM;
-+ goto out_free_io;
++ c->leb_cnt = c->vi.size;
++ c->leb_size = c->vi.usable_leb_size;
++ c->half_leb_size = c->leb_size / 2;
++ c->min_io_size = c->di.min_io_size;
++ c->min_io_shift = fls(c->min_io_size) - 1;
++
++ if (c->leb_size < UBIFS_MIN_LEB_SZ) {
++ ubifs_err("too small LEBs (%d bytes), min. is %d bytes",
++ c->leb_size, UBIFS_MIN_LEB_SZ);
++ return -EINVAL;
+ }
+
-+ psif->regs = ioremap(regs->start, regs->end - regs->start + 1);
-+ if (!psif->regs) {
-+ ret = -ENOMEM;
-+ dev_dbg(&pdev->dev, "could not map I/O memory\n");
-+ goto out_free_io;
++ if (c->leb_cnt < UBIFS_MIN_LEB_CNT) {
++ ubifs_err("too few LEBs (%d), min. is %d",
++ c->leb_cnt, UBIFS_MIN_LEB_CNT);
++ return -EINVAL;
+ }
+
-+ pclk = clk_get(&pdev->dev, "pclk");
-+ if (IS_ERR(pclk)) {
-+ dev_dbg(&pdev->dev, "could not get peripheral clock\n");
-+ ret = PTR_ERR(pclk);
-+ goto out_iounmap;
++ if (!is_power_of_2(c->min_io_size)) {
++ ubifs_err("bad min. I/O size %d", c->min_io_size);
++ return -EINVAL;
+ }
-+ psif->pclk = pclk;
+
-+ /* Reset the PSIF to enter at a known state. */
-+ ret = clk_enable(pclk);
-+ if (ret) {
-+ dev_dbg(&pdev->dev, "could not enable pclk\n");
-+ goto out_put_clk;
++ /*
++ * UBIFS aligns all node to 8-byte boundary, so to make function in
++ * io.c simpler, assume minimum I/O unit size to be 8 bytes if it is
++ * less than 8.
++ */
++ if (c->min_io_size < 8) {
++ c->min_io_size = 8;
++ c->min_io_shift = 3;
+ }
-+ psif_writel(psif, CR, PSIF_BIT(CR_SWRST));
-+ clk_disable(pclk);
+
-+ setup_timer(&psif->tx_timer, psif_transmit_data, (unsigned long)psif);
++ c->ref_node_alsz = ALIGN(UBIFS_REF_NODE_SZ, c->min_io_size);
++ c->mst_node_alsz = ALIGN(UBIFS_MST_NODE_SZ, c->min_io_size);
+
-+ irq = platform_get_irq(pdev, 0);
-+ if (irq < 0) {
-+ dev_dbg(&pdev->dev, "could not get irq\n");
-+ ret = -ENXIO;
-+ goto out_put_clk;
-+ }
-+ ret = request_irq(irq, psif_interrupt, IRQF_SHARED, "at32psif", psif);
-+ if (ret) {
-+ dev_dbg(&pdev->dev, "could not request irq %d\n", irq);
-+ goto out_put_clk;
-+ }
-+ psif->irq = irq;
++ /*
++ * Initialize node length ranges which are mostly needed for node
++ * length validation.
++ */
++ c->ranges[UBIFS_PAD_NODE].len = UBIFS_PAD_NODE_SZ;
++ c->ranges[UBIFS_SB_NODE].len = UBIFS_SB_NODE_SZ;
++ c->ranges[UBIFS_MST_NODE].len = UBIFS_MST_NODE_SZ;
++ c->ranges[UBIFS_REF_NODE].len = UBIFS_REF_NODE_SZ;
++ c->ranges[UBIFS_TRUN_NODE].len = UBIFS_TRUN_NODE_SZ;
++ c->ranges[UBIFS_CS_NODE].len = UBIFS_CS_NODE_SZ;
++
++ c->ranges[UBIFS_INO_NODE].min_len = UBIFS_INO_NODE_SZ;
++ c->ranges[UBIFS_INO_NODE].max_len = UBIFS_MAX_INO_NODE_SZ;
++ c->ranges[UBIFS_ORPH_NODE].min_len =
++ UBIFS_ORPH_NODE_SZ + sizeof(__le64);
++ c->ranges[UBIFS_ORPH_NODE].max_len = c->leb_size;
++ c->ranges[UBIFS_DENT_NODE].min_len = UBIFS_DENT_NODE_SZ;
++ c->ranges[UBIFS_DENT_NODE].max_len = UBIFS_MAX_DENT_NODE_SZ;
++ c->ranges[UBIFS_XENT_NODE].min_len = UBIFS_XENT_NODE_SZ;
++ c->ranges[UBIFS_XENT_NODE].max_len = UBIFS_MAX_XENT_NODE_SZ;
++ c->ranges[UBIFS_DATA_NODE].min_len = UBIFS_DATA_NODE_SZ;
++ c->ranges[UBIFS_DATA_NODE].max_len = UBIFS_MAX_DATA_NODE_SZ;
++ /*
++ * Minimum indexing node size is amended later when superblock is
++ * read and the key length is known.
++ */
++ c->ranges[UBIFS_IDX_NODE].min_len = UBIFS_IDX_NODE_SZ + UBIFS_BRANCH_SZ;
++ /*
++ * Maximum indexing node size is amended later when superblock is
++ * read and the fanout is known.
++ */
++ c->ranges[UBIFS_IDX_NODE].max_len = INT_MAX;
++
++ /*
++ * Initialize dead and dark LEB space watermarks.
++ *
++ * Dead space is the space which cannot be used. Its watermark is
++ * equivalent to min. I/O unit or minimum node size if it is greater
++ * then min. I/O unit.
++ *
++ * Dark space is the space which might be used, or might not, depending
++ * on which node should be written to the LEB. Its watermark is
++ * equivalent to maximum UBIFS node size.
++ */
++ c->dead_wm = ALIGN(MIN_WRITE_SZ, c->min_io_size);
++ c->dark_wm = ALIGN(UBIFS_MAX_NODE_SZ, c->min_io_size);
++
++ return 0;
++}
++
++/**
++ * bud_wbuf_callback - bud LEB write-buffer synchronization call-back.
++ * @c: UBIFS file-system description object
++ * @lnum: LEB the write-buffer was synchronized to
++ * @free: how many free bytes left in this LEB
++ * @pad: how many bytes were padded
++ *
++ * This is a callback function which is called by the I/O unit when the
++ * write-buffer is synchronized. We need this to correctly maintain space
++ * accounting in bud logical eraseblocks. This function returns zero in case of
++ * success and a negative error code in case of failure.
++ *
++ * This function actually belongs to the journal, but we keep it here because
++ * we want to keep it static.
++ */
++static int bud_wbuf_callback(struct ubifs_info *c, int lnum, int free, int pad)
++{
++ return ubifs_update_one_lp(c, lnum, free, pad, 0, 0);
++}
++
++/*
++ * init_constants_late - initialize UBIFS constants.
++ * @c: UBIFS file-system description object
++ *
++ * This is a helper function which initializes various UBIFS constants after
++ * the superblock has been read. It also checks various UBIFS parameters and
++ * makes sure they are all right. Returns zero in case of success and a
++ * negative error code in case of failure.
++ */
++static int init_constants_late(struct ubifs_info *c)
++{
++ int tmp, err;
++ uint64_t tmp64;
++
++ c->main_bytes = c->main_lebs * c->leb_size;
++
++ c->max_znode_sz = sizeof(struct ubifs_znode) +
++ c->fanout * sizeof(struct ubifs_zbranch);
+
-+ io->id.type = SERIO_8042;
-+ io->write = psif_write;
-+ io->open = psif_open;
-+ io->close = psif_close;
-+ strlcpy(io->name, pdev->dev.bus_id, sizeof(io->name));
-+ strlcpy(io->phys, pdev->dev.bus_id, sizeof(io->phys));
-+ io->port_data = psif;
-+ io->dev.parent = &pdev->dev;
++ tmp = ubifs_idx_node_sz(c, 1);
++ c->ranges[UBIFS_IDX_NODE].min_len = tmp;
++ c->min_idx_node_sz = ALIGN(tmp, 8);
+
-+ psif_set_prescaler(psif);
++ tmp = ubifs_idx_node_sz(c, c->fanout);
++ c->ranges[UBIFS_IDX_NODE].max_len = tmp;
++ c->max_idx_node_sz = ALIGN(tmp, 8);
+
-+ spin_lock_init(&psif->lock);
-+ serio_register_port(psif->io);
-+ platform_set_drvdata(pdev, psif);
++ /* Make sure LEB size is large enough to fit full commit */
++ tmp = UBIFS_CS_NODE_SZ + UBIFS_REF_NODE_SZ * c->jhead_cnt;
++ tmp = ALIGN(tmp, c->min_io_size);
++ if (tmp > c->leb_size) {
++ dbg_err("too small LEB size %d, at least %d needed",
++ c->leb_size, tmp);
++ return -EINVAL;
++ }
+
-+ dev_info(&pdev->dev, "Atmel AVR32 PSIF PS/2 driver on 0x%08x irq %d\n",
-+ (int)psif->regs, psif->irq);
++ /*
++ * Make sure that the log is large enough to fit reference nodes for
++ * all buds plus one reserved LEB.
++ */
++ tmp64 = c->max_bud_bytes;
++ tmp = do_div(tmp64, c->leb_size);
++ c->max_bud_cnt = tmp64 + !!tmp;
++ tmp = (c->ref_node_alsz * c->max_bud_cnt + c->leb_size - 1);
++ tmp /= c->leb_size;
++ tmp += 1;
++ if (c->log_lebs < tmp) {
++ dbg_err("too small log %d LEBs, required min. %d LEBs",
++ c->log_lebs, tmp);
++ return -EINVAL;
++ }
+
-+ return 0;
++ /*
++ * When budgeting we assume worst-case scenarios when the pages are not
++ * be compressed and direntries are of the maximum size.
++ *
++ * Note, data, which may be stored in inodes is budgeted separately, so
++ * it is not included into 'c->inode_budget'.
++ */
++ c->page_budget = UBIFS_MAX_DATA_NODE_SZ * UBIFS_BLOCKS_PER_PAGE;
++ c->inode_budget = UBIFS_INO_NODE_SZ;
++ c->dent_budget = UBIFS_MAX_DENT_NODE_SZ;
+
-+out_put_clk:
-+ clk_put(psif->pclk);
-+out_iounmap:
-+ iounmap(psif->regs);
-+out_free_io:
-+ kfree(io);
-+out_free_psif:
-+ kfree(psif);
-+out:
-+ return ret;
-+}
++ /*
++ * When the amount of flash space used by buds becomes
++ * 'c->max_bud_bytes', UBIFS just blocks all writers and starts commit.
++ * The writers are unblocked when the commit is finished. To avoid
++ * writers to be blocked UBIFS initiates background commit in advance,
++ * when number of bud bytes becomes above the limit defined below.
++ */
++ c->bg_bud_bytes = (c->max_bud_bytes * 13) >> 4;
+
-+static int __exit psif_remove(struct platform_device *pdev)
-+{
-+ struct psif *psif = platform_get_drvdata(pdev);
++ /*
++ * Ensure minimum journal size. All the bytes in the journal heads are
++ * considered to be used, when calculating the current journal usage.
++ * Consequently, if the journal is too small, UBIFS will treat it as
++ * always full.
++ */
++ tmp64 = (uint64_t)(c->jhead_cnt + 1) * c->leb_size + 1;
++ if (c->bg_bud_bytes < tmp64)
++ c->bg_bud_bytes = tmp64;
++ if (c->max_bud_bytes < tmp64 + c->leb_size)
++ c->max_bud_bytes = tmp64 + c->leb_size;
+
-+ psif_writel(psif, IDR, ~0UL);
-+ psif_writel(psif, CR, PSIF_BIT(CR_TXDIS) | PSIF_BIT(CR_RXDIS));
++ err = ubifs_calc_lpt_geom(c);
++ if (err)
++ return err;
+
-+ serio_unregister_port(psif->io);
-+ iounmap(psif->regs);
-+ free_irq(psif->irq, psif);
-+ clk_put(psif->pclk);
-+ kfree(psif);
++ c->min_idx_lebs = ubifs_calc_min_idx_lebs(c);
+
-+ platform_set_drvdata(pdev, NULL);
++ /*
++ * Calculate total amount of FS blocks. This number is not used
++ * internally because it does not make much sense for UBIFS, but it is
++ * necessary to report something for the 'statfs()' call.
++ *
++ * Subtract the LEB reserved for GC and the LEB which is reserved for
++ * deletions.
++ *
++ * Review 'ubifs_calc_available()' if changing this calculation.
++ */
++ tmp64 = c->main_lebs - 2;
++ tmp64 *= c->leb_size - c->dark_wm;
++ tmp64 = ubifs_reported_space(c, tmp64);
++ c->block_cnt = tmp64 >> UBIFS_BLOCK_SHIFT;
+
+ return 0;
+}
+
-+#ifdef CONFIG_PM
-+static int psif_suspend(struct platform_device *pdev, pm_message_t state)
++/**
++ * take_gc_lnum - reserve GC LEB.
++ * @c: UBIFS file-system description object
++ *
++ * This function ensures that the LEB reserved for garbage collection is
++ * unmapped and is marked as "taken" in lprops. We also have to set free space
++ * to LEB size and dirty space to zero, because lprops may contain out-of-date
++ * information if the file-system was un-mounted before it has been committed.
++ * This function returns zero in case of success and a negative error code in
++ * case of failure.
++ */
++static int take_gc_lnum(struct ubifs_info *c)
+{
-+ struct psif *psif = platform_get_drvdata(pdev);
++ int err;
+
-+ if (psif->open) {
-+ psif_writel(psif, CR, PSIF_BIT(CR_RXDIS) | PSIF_BIT(CR_TXDIS));
-+ clk_disable(psif->pclk);
++ if (c->gc_lnum == -1) {
++ ubifs_err("no LEB for GC");
++ return -EINVAL;
+ }
+
-+ return 0;
++ err = ubifs_leb_unmap(c, c->gc_lnum);
++ if (err)
++ return err;
++
++ /* And we have to tell lprops that this LEB is taken */
++ err = ubifs_change_one_lp(c, c->gc_lnum, c->leb_size, 0,
++ LPROPS_TAKEN, 0, 0);
++ return err;
+}
+
-+static int psif_resume(struct platform_device *pdev)
++/**
++ * alloc_wbufs - allocate write-buffers.
++ * @c: UBIFS file-system description object
++ *
++ * This helper function allocates and initializes UBIFS write-buffers. Returns
++ * zero in case of success and %-ENOMEM in case of failure.
++ */
++static int alloc_wbufs(struct ubifs_info *c)
+{
-+ struct psif *psif = platform_get_drvdata(pdev);
++ int i, err;
+
-+ if (psif->open) {
-+ clk_enable(psif->pclk);
-+ psif_set_prescaler(psif);
-+ psif_writel(psif, CR, PSIF_BIT(CR_RXEN) | PSIF_BIT(CR_TXEN));
++ c->jheads = kzalloc(c->jhead_cnt * sizeof(struct ubifs_jhead),
++ GFP_KERNEL);
++ if (!c->jheads)
++ return -ENOMEM;
++
++ /* Initialize journal heads */
++ for (i = 0; i < c->jhead_cnt; i++) {
++ INIT_LIST_HEAD(&c->jheads[i].buds_list);
++ err = ubifs_wbuf_init(c, &c->jheads[i].wbuf);
++ if (err)
++ return err;
++
++ c->jheads[i].wbuf.sync_callback = &bud_wbuf_callback;
++ c->jheads[i].wbuf.jhead = i;
+ }
+
++ c->jheads[BASEHD].wbuf.dtype = UBI_SHORTTERM;
++ /*
++ * Garbage Collector head likely contains long-term data and
++ * does not need to be synchronized by timer.
++ */
++ c->jheads[GCHD].wbuf.dtype = UBI_LONGTERM;
++ c->jheads[GCHD].wbuf.timeout = 0;
++
+ return 0;
+}
-+#else
-+#define psif_suspend NULL
-+#define psif_resume NULL
-+#endif
-+
-+static struct platform_driver psif_driver = {
-+ .remove = __exit_p(psif_remove),
-+ .driver = {
-+ .name = "atmel_psif",
-+ },
-+ .suspend = psif_suspend,
-+ .resume = psif_resume,
-+};
+
-+static int __init psif_init(void)
++/**
++ * free_wbufs - free write-buffers.
++ * @c: UBIFS file-system description object
++ */
++static void free_wbufs(struct ubifs_info *c)
+{
-+ return platform_driver_probe(&psif_driver, psif_probe);
-+}
++ int i;
+
-+static void __exit psif_exit(void)
-+{
-+ platform_driver_unregister(&psif_driver);
++ if (c->jheads) {
++ for (i = 0; i < c->jhead_cnt; i++) {
++ kfree(c->jheads[i].wbuf.buf);
++ kfree(c->jheads[i].wbuf.inodes);
++ }
++ kfree(c->jheads);
++ c->jheads = NULL;
++ }
+}
+
-+module_init(psif_init);
-+module_exit(psif_exit);
-+
-+MODULE_AUTHOR("Hans-Christian Egtvedt <hcegtvedt@atmel.com>");
-+MODULE_DESCRIPTION("Atmel AVR32 PSIF PS/2 driver");
-+MODULE_LICENSE("GPL");
---- /dev/null
-+++ b/drivers/input/serio/at32psif.h
-@@ -0,0 +1,82 @@
-+/*
-+ * Copyright (C) 2007 Atmel Corporation
-+ *
-+ * Driver for the AT32AP700X PS/2 controller (PSIF).
-+ *
-+ * This program is free software; you can redistribute it and/or modify it
-+ * under the terms of the GNU General Public License version 2 as published
-+ * by the Free Software Foundation.
++/**
++ * free_orphans - free orphans.
++ * @c: UBIFS file-system description object
+ */
++static void free_orphans(struct ubifs_info *c)
++{
++ struct ubifs_orphan *orph;
+
-+#ifndef _AT32PSIF_H
-+#define _AT32PSIF_H
++ while (c->orph_dnext) {
++ orph = c->orph_dnext;
++ c->orph_dnext = orph->dnext;
++ list_del(&orph->list);
++ kfree(orph);
++ }
+
-+/* PSIF register offsets */
-+#define PSIF_CR 0x00
-+#define PSIF_RHR 0x04
-+#define PSIF_THR 0x08
-+#define PSIF_SR 0x10
-+#define PSIF_IER 0x14
-+#define PSIF_IDR 0x18
-+#define PSIF_IMR 0x1c
-+#define PSIF_PSR 0x24
++ while (!list_empty(&c->orph_list)) {
++ orph = list_entry(c->orph_list.next, struct ubifs_orphan, list);
++ list_del(&orph->list);
++ kfree(orph);
++ dbg_err("orphan list not empty at unmount");
++ }
+
-+/* Bitfields in control register. */
-+#define PSIF_CR_RXDIS_OFFSET 1
-+#define PSIF_CR_RXDIS_SIZE 1
-+#define PSIF_CR_RXEN_OFFSET 0
-+#define PSIF_CR_RXEN_SIZE 1
-+#define PSIF_CR_SWRST_OFFSET 15
-+#define PSIF_CR_SWRST_SIZE 1
-+#define PSIF_CR_TXDIS_OFFSET 9
-+#define PSIF_CR_TXDIS_SIZE 1
-+#define PSIF_CR_TXEN_OFFSET 8
-+#define PSIF_CR_TXEN_SIZE 1
++ vfree(c->orph_buf);
++ c->orph_buf = NULL;
++}
+
-+/* Bitfields in interrupt disable, enable, mask and status register. */
-+#define PSIF_NACK_OFFSET 8
-+#define PSIF_NACK_SIZE 1
-+#define PSIF_OVRUN_OFFSET 5
-+#define PSIF_OVRUN_SIZE 1
-+#define PSIF_PARITY_OFFSET 9
-+#define PSIF_PARITY_SIZE 1
-+#define PSIF_RXRDY_OFFSET 4
-+#define PSIF_RXRDY_SIZE 1
-+#define PSIF_TXEMPTY_OFFSET 1
-+#define PSIF_TXEMPTY_SIZE 1
-+#define PSIF_TXRDY_OFFSET 0
-+#define PSIF_TXRDY_SIZE 1
++/**
++ * free_buds - free per-bud objects.
++ * @c: UBIFS file-system description object
++ */
++static void free_buds(struct ubifs_info *c)
++{
++ struct rb_node *this = c->buds.rb_node;
++ struct ubifs_bud *bud;
++
++ while (this) {
++ if (this->rb_left)
++ this = this->rb_left;
++ else if (this->rb_right)
++ this = this->rb_right;
++ else {
++ bud = rb_entry(this, struct ubifs_bud, rb);
++ this = rb_parent(this);
++ if (this) {
++ if (this->rb_left == &bud->rb)
++ this->rb_left = NULL;
++ else
++ this->rb_right = NULL;
++ }
++ kfree(bud);
++ }
++ }
++}
+
-+/* Bitfields in prescale register. */
-+#define PSIF_PSR_PRSCV_OFFSET 0
-+#define PSIF_PSR_PRSCV_SIZE 12
++/**
++ * check_volume_empty - check if the UBI volume is empty.
++ * @c: UBIFS file-system description object
++ *
++ * This function checks if the UBIFS volume is empty by looking if its LEBs are
++ * mapped or not. The result of checking is stored in the @c->empty variable.
++ * Returns zero in case of success and a negative error code in case of
++ * failure.
++ */
++static int check_volume_empty(struct ubifs_info *c)
++{
++ int lnum, err;
+
-+/* Bitfields in receive hold register. */
-+#define PSIF_RHR_RXDATA_OFFSET 0
-+#define PSIF_RHR_RXDATA_SIZE 8
++ c->empty = 1;
++ for (lnum = 0; lnum < c->leb_cnt; lnum++) {
++ err = ubi_is_mapped(c->ubi, lnum);
++ if (unlikely(err < 0))
++ return err;
++ if (err == 1) {
++ c->empty = 0;
++ break;
++ }
+
-+/* Bitfields in transmit hold register. */
-+#define PSIF_THR_TXDATA_OFFSET 0
-+#define PSIF_THR_TXDATA_SIZE 8
++ cond_resched();
++ }
+
-+/* Bit manipulation macros */
-+#define PSIF_BIT(name) \
-+ (1 << PSIF_##name##_OFFSET)
-+#define PSIF_BF(name, value) \
-+ (((value) & ((1 << PSIF_##name##_SIZE) - 1)) \
-+ << PSIF_##name##_OFFSET)
-+#define PSIF_BFEXT(name, value)\
-+ (((value) >> PSIF_##name##_OFFSET) \
-+ & ((1 << PSIF_##name##_SIZE) - 1))
-+#define PSIF_BFINS(name, value, old) \
-+ (((old) & ~(((1 << PSIF_##name##_SIZE) - 1) \
-+ << PSIF_##name##_OFFSET)) \
-+ | PSIF_BF(name, value))
++ return 0;
++}
+
-+/* Register access macros */
-+#define psif_readl(port, reg) \
-+ __raw_readl((port)->regs + PSIF_##reg)
-+#define psif_writel(port, reg, value) \
-+ __raw_writel((value), (port)->regs + PSIF_##reg)
++/*
++ * UBIFS mount options.
++ *
++ * Opt_fast_unmount: do not run a journal commit before un-mounting
++ * Opt_norm_unmount: run a journal commit before un-mounting
++ * Opt_err: just end of array marker
++ */
++enum {
++ Opt_fast_unmount,
++ Opt_norm_unmount,
++ Opt_err,
++};
+
-+#endif /* _AT32PSIF_H */
---- a/drivers/input/serio/Kconfig
-+++ b/drivers/input/serio/Kconfig
-@@ -88,6 +88,17 @@
- To compile this driver as a module, choose M here: the
- module will be called rpckbd.
-
-+config SERIO_AT32PSIF
-+ tristate "AVR32 PSIF PS/2 keyboard and mouse controller"
-+ depends on AVR32
-+ default n
-+ help
-+ Say Y here if you want to use the PSIF peripheral on AVR32 devices
-+ and connect a PS/2 keyboard and/or mouse to it.
++static match_table_t tokens = {
++ {Opt_fast_unmount, "fast_unmount"},
++ {Opt_norm_unmount, "norm_unmount"},
++ {Opt_err, NULL},
++};
+
-+ To compile this driver as a module, choose M here: the module will
-+ be called at32psif.
++/**
++ * ubifs_parse_options - parse mount parameters.
++ * @c: UBIFS file-system description object
++ * @options: parameters to parse
++ * @is_remount: non-zero if this is FS re-mount
++ *
++ * This function parses UBIFS mount options and returns zero in case success
++ * and a negative error code in case of failure.
++ */
++static int ubifs_parse_options(struct ubifs_info *c, char *options,
++ int is_remount)
++{
++ char *p;
++ substring_t args[MAX_OPT_ARGS];
+
- config SERIO_AMBAKMI
- tristate "AMBA KMI keyboard controller"
- depends on ARM_AMBA
---- a/drivers/input/serio/Makefile
-+++ b/drivers/input/serio/Makefile
-@@ -12,6 +12,7 @@
- obj-$(CONFIG_SERIO_RPCKBD) += rpckbd.o
- obj-$(CONFIG_SERIO_SA1111) += sa1111ps2.o
- obj-$(CONFIG_SERIO_AMBAKMI) += ambakmi.o
-+obj-$(CONFIG_SERIO_AT32PSIF) += at32psif.o
- obj-$(CONFIG_SERIO_Q40KBD) += q40kbd.o
- obj-$(CONFIG_SERIO_GSCPS2) += gscps2.o
- obj-$(CONFIG_HP_SDC) += hp_sdc.o
---- a/drivers/leds/Kconfig
-+++ b/drivers/leds/Kconfig
-@@ -18,6 +18,13 @@
-
- comment "LED drivers"
-
-+config LEDS_ATMEL_PWM
-+ tristate "LED Support using Atmel PWM outputs"
-+ depends on LEDS_CLASS && ATMEL_PWM
-+ help
-+ This option enables support for LEDs driven using outputs
-+ of the dedicated PWM controller found on newer Atmel SOCs.
-+
- config LEDS_CORGI
- tristate "LED Support for the Sharp SL-C7x0 series"
- depends on LEDS_CLASS && PXA_SHARP_C7xx
---- /dev/null
-+++ b/drivers/leds/leds-atmel-pwm.c
-@@ -0,0 +1,155 @@
-+#include <linux/kernel.h>
-+#include <linux/platform_device.h>
-+#include <linux/leds.h>
-+#include <linux/io.h>
-+#include <linux/atmel_pwm.h>
++ if (!options)
++ return 0;
+
++ while ((p = strsep(&options, ","))) {
++ int token;
+
-+struct pwmled {
-+ struct led_classdev cdev;
-+ struct pwm_channel pwmc;
-+ struct gpio_led *desc;
-+ u32 mult;
-+ u8 active_low;
-+};
++ if (!*p)
++ continue;
++
++ token = match_token(p, tokens, args);
++ switch (token) {
++ case Opt_fast_unmount:
++ c->mount_opts.unmount_mode = 2;
++ c->fast_unmount = 1;
++ break;
++ case Opt_norm_unmount:
++ c->mount_opts.unmount_mode = 1;
++ c->fast_unmount = 0;
++ break;
++ default:
++ ubifs_err("unrecognized mount option \"%s\" "
++ "or missing value", p);
++ return -EINVAL;
++ }
++ }
+
++ return 0;
++}
+
-+/*
-+ * For simplicity, we use "brightness" as if it were a linear function
-+ * of PWM duty cycle. However, a logarithmic function of duty cycle is
-+ * probably a better match for perceived brightness: two is half as bright
-+ * as four, four is half as bright as eight, etc
++/**
++ * destroy_journal - destroy journal data structures.
++ * @c: UBIFS file-system description object
++ *
++ * This function destroys journal data structures including those that may have
++ * been created by recovery functions.
+ */
-+static void pwmled_brightness(struct led_classdev *cdev, enum led_brightness b)
++static void destroy_journal(struct ubifs_info *c)
+{
-+ struct pwmled *led;
++ while (!list_empty(&c->unclean_leb_list)) {
++ struct ubifs_unclean_leb *ucleb;
++
++ ucleb = list_entry(c->unclean_leb_list.next,
++ struct ubifs_unclean_leb, list);
++ list_del(&ucleb->list);
++ kfree(ucleb);
++ }
++ while (!list_empty(&c->old_buds)) {
++ struct ubifs_bud *bud;
+
-+ /* update the duty cycle for the *next* period */
-+ led = container_of(cdev, struct pwmled, cdev);
-+ pwm_channel_writel(&led->pwmc, PWM_CUPD, led->mult * (unsigned) b);
++ bud = list_entry(c->old_buds.next, struct ubifs_bud, list);
++ list_del(&bud->list);
++ kfree(bud);
++ }
++ ubifs_destroy_idx_gc(c);
++ ubifs_destroy_size_tree(c);
++ ubifs_tnc_close(c);
++ free_buds(c);
+}
+
-+/*
-+ * NOTE: we reuse the platform_data structure of GPIO leds,
-+ * but repurpose its "gpio" number as a PWM channel number.
++/**
++ * mount_ubifs - mount UBIFS file-system.
++ * @c: UBIFS file-system description object
++ *
++ * This function mounts UBIFS file system. Returns zero in case of success and
++ * a negative error code in case of failure.
++ *
++ * Note, the function does not de-allocate resources it it fails half way
++ * through, and the caller has to do this instead.
+ */
-+static int __init pwmled_probe(struct platform_device *pdev)
++static int mount_ubifs(struct ubifs_info *c)
+{
-+ const struct gpio_led_platform_data *pdata;
-+ struct pwmled *leds;
-+ unsigned i;
-+ int status;
++ struct super_block *sb = c->vfs_sb;
++ int err, mounted_read_only = (sb->s_flags & MS_RDONLY);
++ unsigned long long x;
++ size_t sz;
+
-+ pdata = pdev->dev.platform_data;
-+ if (!pdata || pdata->num_leds < 1)
-+ return -ENODEV;
++ err = init_constants_early(c);
++ if (err)
++ return err;
+
-+ leds = kcalloc(pdata->num_leds, sizeof(*leds), GFP_KERNEL);
-+ if (!leds)
++#ifdef CONFIG_UBIFS_FS_DEBUG
++ c->dbg_buf = vmalloc(c->leb_size);
++ if (!c->dbg_buf)
+ return -ENOMEM;
++#endif
+
-+ for (i = 0; i < pdata->num_leds; i++) {
-+ struct pwmled *led = leds + i;
-+ const struct gpio_led *dat = pdata->leds + i;
-+ u32 tmp;
-+
-+ led->cdev.name = dat->name;
-+ led->cdev.brightness = LED_OFF;
-+ led->cdev.brightness_set = pwmled_brightness;
-+ led->cdev.default_trigger = dat->default_trigger;
-+
-+ led->active_low = dat->active_low;
-+
-+ status = pwm_channel_alloc(dat->gpio, &led->pwmc);
-+ if (status < 0)
-+ goto err;
-+
-+ /*
-+ * Prescale clock by 2^x, so PWM counts in low MHz.
-+ * Start each cycle with the LED active, so increasing
-+ * the duty cycle gives us more time on (== brighter).
-+ */
-+ tmp = 5;
-+ if (!led->active_low)
-+ tmp |= PWM_CPR_CPOL;
-+ pwm_channel_writel(&led->pwmc, PWM_CMR, tmp);
++ err = check_volume_empty(c);
++ if (err)
++ goto out_free;
+
++ if (c->empty && (mounted_read_only || c->ro_media)) {
+ /*
-+ * Pick a period so PWM cycles at 100+ Hz; and a multiplier
-+ * for scaling duty cycle: brightness * mult.
++ * This UBI volume is empty, and read-only, or the file system
++ * is mounted read-only - we cannot format it.
+ */
-+ tmp = (led->pwmc.mck / (1 << 5)) / 100;
-+ tmp /= 255;
-+ led->mult = tmp;
-+ pwm_channel_writel(&led->pwmc, PWM_CDTY,
-+ led->cdev.brightness * 255);
-+ pwm_channel_writel(&led->pwmc, PWM_CPRD,
-+ LED_FULL * tmp);
++ ubifs_err("can't format empty UBI volume: read-only %s",
++ c->ro_media ? "UBI volume" : "mount");
++ err = -EROFS;
++ goto out_free;
++ }
+
-+ pwm_channel_enable(&led->pwmc);
++ if (c->ro_media && !mounted_read_only) {
++ ubifs_err("cannot mount read-write - read-only media");
++ err = -EROFS;
++ goto out_free;
++ }
+
-+ /* Hand it over to the LED framework */
-+ status = led_classdev_register(&pdev->dev, &led->cdev);
-+ if (status < 0) {
-+ pwm_channel_free(&led->pwmc);
-+ goto err;
-+ }
++ /*
++ * The requirement for the buffer is that it should fit indexing B-tree
++ * height amount of integers. We assume the height if the TNC tree will
++ * never exceed 64.
++ */
++ err = -ENOMEM;
++ c->bottom_up_buf = kmalloc(BOTTOM_UP_HEIGHT * sizeof(int), GFP_KERNEL);
++ if (!c->bottom_up_buf)
++ goto out_free;
++
++ c->sbuf = vmalloc(c->leb_size);
++ if (!c->sbuf)
++ goto out_free;
++
++ if (!mounted_read_only) {
++ c->ileb_buf = vmalloc(c->leb_size);
++ if (!c->ileb_buf)
++ goto out_free;
+ }
+
-+ platform_set_drvdata(pdev, leds);
-+ return 0;
++ err = ubifs_read_superblock(c);
++ if (err)
++ goto out_free;
+
-+err:
-+ while (i-- > 0) {
-+ led_classdev_unregister(&leds[i].cdev);
-+ pwm_channel_free(&leds[i].pwmc);
++ /*
++ * Make sure the compressor which is set as the default on in the
++ * superblock was actually compiled in.
++ */
++ if (!ubifs_compr_present(c->default_compr)) {
++ ubifs_warn("'%s' compressor is set by superblock, but not "
++ "compiled in", ubifs_compr_name(c->default_compr));
++ c->default_compr = UBIFS_COMPR_NONE;
+ }
-+ kfree(leds);
-+
-+ return status;
-+}
+
-+static int __exit pwmled_remove(struct platform_device *pdev)
-+{
-+ const struct gpio_led_platform_data *pdata;
-+ struct pwmled *leds;
-+ unsigned i;
++ dbg_failure_mode_registration(c);
+
-+ pdata = pdev->dev.platform_data;
-+ leds = platform_get_drvdata(pdev);
++ err = init_constants_late(c);
++ if (err)
++ goto out_dereg;
++
++ sz = ALIGN(c->max_idx_node_sz, c->min_io_size);
++ sz = ALIGN(sz + c->max_idx_node_sz, c->min_io_size);
++ c->cbuf = kmalloc(sz, GFP_NOFS);
++ if (!c->cbuf) {
++ err = -ENOMEM;
++ goto out_dereg;
++ }
+
-+ for (i = 0; i < pdata->num_leds; i++) {
-+ struct pwmled *led = leds + i;
++ if (!mounted_read_only) {
++ err = alloc_wbufs(c);
++ if (err)
++ goto out_cbuf;
++
++ /* Create background thread */
++ sprintf(c->bgt_name, BGT_NAME_PATTERN, c->vi.ubi_num,
++ c->vi.vol_id);
++ c->bgt = kthread_create(ubifs_bg_thread, c, c->bgt_name);
++ if (!c->bgt)
++ c->bgt = ERR_PTR(-EINVAL);
++ if (IS_ERR(c->bgt)) {
++ err = PTR_ERR(c->bgt);
++ c->bgt = NULL;
++ ubifs_err("cannot spawn \"%s\", error %d",
++ c->bgt_name, err);
++ goto out_wbufs;
++ }
++ wake_up_process(c->bgt);
++ }
+
-+ led_classdev_unregister(&led->cdev);
-+ pwm_channel_free(&led->pwmc);
++ err = ubifs_read_master(c);
++ if (err)
++ goto out_stop;
++
++ if ((c->mst_node->flags & cpu_to_le32(UBIFS_MST_DIRTY)) != 0) {
++ ubifs_msg("recovery needed");
++ c->need_recovery = 1;
++ if (!mounted_read_only) {
++ err = ubifs_recover_inl_heads(c, c->sbuf);
++ if (err)
++ goto out_master;
++ }
++ } else if (!mounted_read_only) {
++ /*
++ * Set the "dirty" flag so that if we reboot uncleanly we
++ * will notice this immediately on the next mount.
++ */
++ c->mst_node->flags |= cpu_to_le32(UBIFS_MST_DIRTY);
++ err = ubifs_write_master(c);
++ if (err)
++ goto out_master;
+ }
+
-+ kfree(leds);
-+ platform_set_drvdata(pdev, NULL);
-+ return 0;
-+}
++ err = ubifs_lpt_init(c, 1, !mounted_read_only);
++ if (err)
++ goto out_lpt;
+
-+static struct platform_driver pwmled_driver = {
-+ .driver = {
-+ .name = "leds-atmel-pwm",
-+ .owner = THIS_MODULE,
-+ },
-+ /* REVISIT add suspend() and resume() methods */
-+ .remove = __exit_p(pwmled_remove),
-+};
++ err = dbg_check_idx_size(c, c->old_idx_sz);
++ if (err)
++ goto out_lpt;
+
-+static int __init modinit(void)
-+{
-+ return platform_driver_probe(&pwmled_driver, pwmled_probe);
-+}
-+module_init(modinit);
++ err = ubifs_replay_journal(c);
++ if (err)
++ goto out_journal;
+
-+static void __exit modexit(void)
-+{
-+ platform_driver_unregister(&pwmled_driver);
-+}
-+module_exit(modexit);
++ err = ubifs_mount_orphans(c, c->need_recovery, mounted_read_only);
++ if (err)
++ goto out_orphans;
+
-+MODULE_DESCRIPTION("Driver for LEDs with PWM-controlled brightness");
-+MODULE_LICENSE("GPL");
---- a/drivers/leds/Makefile
-+++ b/drivers/leds/Makefile
-@@ -5,6 +5,7 @@
- obj-$(CONFIG_LEDS_TRIGGERS) += led-triggers.o
-
- # LED Platform Drivers
-+obj-$(CONFIG_LEDS_ATMEL_PWM) += leds-atmel-pwm.o
- obj-$(CONFIG_LEDS_CORGI) += leds-corgi.o
- obj-$(CONFIG_LEDS_LOCOMO) += leds-locomo.o
- obj-$(CONFIG_LEDS_SPITZ) += leds-spitz.o
---- /dev/null
-+++ b/drivers/misc/atmel_pwm.c
-@@ -0,0 +1,409 @@
-+#include <linux/module.h>
-+#include <linux/clk.h>
-+#include <linux/err.h>
-+#include <linux/io.h>
-+#include <linux/interrupt.h>
-+#include <linux/platform_device.h>
-+#include <linux/atmel_pwm.h>
++ if (!mounted_read_only) {
++ int lnum;
+
++ /* Check for enough free space */
++ if (ubifs_calc_available(c) <= 0) {
++ ubifs_err("insufficient available space");
++ err = -EINVAL;
++ goto out_orphans;
++ }
+
-+/*
-+ * This is a simple driver for the PWM controller found in various newer
-+ * Atmel SOCs, including the AVR32 series and the AT91sam9263.
-+ *
-+ * Chips with current Linux ports have only 4 PWM channels, out of max 32.
-+ * AT32UC3A and AT32UC3B chips have 7 channels (but currently no Linux).
-+ * Docs are inconsistent about the width of the channel counter registers;
-+ * it's at least 16 bits, but several places say 20 bits.
-+ */
-+#define PWM_NCHAN 4 /* max 32 */
++ /* Check for enough log space */
++ lnum = c->lhead_lnum + 1;
++ if (lnum >= UBIFS_LOG_LNUM + c->log_lebs)
++ lnum = UBIFS_LOG_LNUM;
++ if (lnum == c->ltail_lnum) {
++ err = ubifs_consolidate_log(c);
++ if (err)
++ goto out_orphans;
++ }
+
-+struct pwm {
-+ spinlock_t lock;
-+ struct platform_device *pdev;
-+ u32 mask;
-+ int irq;
-+ void __iomem *base;
-+ struct clk *clk;
-+ struct pwm_channel *channel[PWM_NCHAN];
-+ void (*handler[PWM_NCHAN])(struct pwm_channel *);
-+};
++ if (c->need_recovery) {
++ err = ubifs_recover_size(c);
++ if (err)
++ goto out_orphans;
++ err = ubifs_rcvry_gc_commit(c);
++ } else
++ err = take_gc_lnum(c);
++ if (err)
++ goto out_orphans;
++
++ err = dbg_check_lprops(c);
++ if (err)
++ goto out_orphans;
++ } else if (c->need_recovery) {
++ err = ubifs_recover_size(c);
++ if (err)
++ goto out_orphans;
++ }
+
++ spin_lock(&ubifs_infos_lock);
++ list_add_tail(&c->infos_list, &ubifs_infos);
++ spin_unlock(&ubifs_infos_lock);
+
-+/* global PWM controller registers */
-+#define PWM_MR 0x00
-+#define PWM_ENA 0x04
-+#define PWM_DIS 0x08
-+#define PWM_SR 0x0c
-+#define PWM_IER 0x10
-+#define PWM_IDR 0x14
-+#define PWM_IMR 0x18
-+#define PWM_ISR 0x1c
++ if (c->need_recovery) {
++ if (mounted_read_only)
++ ubifs_msg("recovery deferred");
++ else {
++ c->need_recovery = 0;
++ ubifs_msg("recovery completed");
++ }
++ }
+
-+static inline void pwm_writel(const struct pwm *p, unsigned offset, u32 val)
-+{
-+ __raw_writel(val, p->base + offset);
-+}
++ err = dbg_check_filesystem(c);
++ if (err)
++ goto out_infos;
++
++ ubifs_msg("mounted UBI device %d, volume %d", c->vi.ubi_num,
++ c->vi.vol_id);
++ if (mounted_read_only)
++ ubifs_msg("mounted read-only");
++ ubifs_msg("minimal I/O unit size: %d bytes", c->min_io_size);
++ ubifs_msg("logical eraseblock size: %d bytes (%d KiB)",
++ c->leb_size, c->leb_size / 1024);
++ x = (unsigned long long)c->main_lebs * c->leb_size;
++ ubifs_msg("file system size: %lld bytes (%lld KiB, %lld MiB, "
++ "%d LEBs)", x, x >> 10, x >> 20, c->main_lebs);
++ x = (unsigned long long)c->log_lebs * c->leb_size + c->max_bud_bytes;
++ ubifs_msg("journal size: %lld bytes (%lld KiB, %lld MiB, "
++ "%d LEBs)", x, x >> 10, x >> 20,
++ c->log_lebs + c->max_bud_cnt);
++ ubifs_msg("data journal heads: %d",
++ c->jhead_cnt - NONDATA_JHEADS_CNT);
++ ubifs_msg("default compressor: %s",
++ ubifs_compr_name(c->default_compr));
++ ubifs_msg("media format %d, latest format %d",
++ c->fmt_version, UBIFS_FORMAT_VERSION);
++
++ dbg_msg("compiled on: " __DATE__ " at " __TIME__);
++ dbg_msg("UUID: %02X%02X%02X%02X-%02X%02X"
++ "-%02X%02X-%02X%02X-%02X%02X%02X%02X%02X%02X",
++ c->uuid[0], c->uuid[1], c->uuid[2], c->uuid[3],
++ c->uuid[4], c->uuid[5], c->uuid[6], c->uuid[7],
++ c->uuid[8], c->uuid[9], c->uuid[10], c->uuid[11],
++ c->uuid[12], c->uuid[13], c->uuid[14], c->uuid[15]);
++ dbg_msg("fast unmount: %d", c->fast_unmount);
++ dbg_msg("big_lpt %d", c->big_lpt);
++ dbg_msg("log LEBs: %d (%d - %d)",
++ c->log_lebs, UBIFS_LOG_LNUM, c->log_last);
++ dbg_msg("LPT area LEBs: %d (%d - %d)",
++ c->lpt_lebs, c->lpt_first, c->lpt_last);
++ dbg_msg("orphan area LEBs: %d (%d - %d)",
++ c->orph_lebs, c->orph_first, c->orph_last);
++ dbg_msg("main area LEBs: %d (%d - %d)",
++ c->main_lebs, c->main_first, c->leb_cnt - 1);
++ dbg_msg("index LEBs: %d", c->lst.idx_lebs);
++ dbg_msg("total index bytes: %lld (%lld KiB, %lld MiB)",
++ c->old_idx_sz, c->old_idx_sz >> 10, c->old_idx_sz >> 20);
++ dbg_msg("key hash type: %d", c->key_hash_type);
++ dbg_msg("tree fanout: %d", c->fanout);
++ dbg_msg("reserved GC LEB: %d", c->gc_lnum);
++ dbg_msg("first main LEB: %d", c->main_first);
++ dbg_msg("dead watermark: %d", c->dead_wm);
++ dbg_msg("dark watermark: %d", c->dark_wm);
++ x = c->main_lebs * c->dark_wm;
++ dbg_msg("max. dark space: %lld (%lld KiB, %lld MiB)",
++ x, x >> 10, x >> 20);
++ dbg_msg("maximum bud bytes: %lld (%lld KiB, %lld MiB)",
++ c->max_bud_bytes, c->max_bud_bytes >> 10,
++ c->max_bud_bytes >> 20);
++ dbg_msg("BG commit bud bytes: %lld (%lld KiB, %lld MiB)",
++ c->bg_bud_bytes, c->bg_bud_bytes >> 10,
++ c->bg_bud_bytes >> 20);
++ dbg_msg("current bud bytes %lld (%lld KiB, %lld MiB)",
++ c->bud_bytes, c->bud_bytes >> 10, c->bud_bytes >> 20);
++ dbg_msg("max. seq. number: %llu", c->max_sqnum);
++ dbg_msg("commit number: %llu", c->cmt_no);
+
-+static inline u32 pwm_readl(const struct pwm *p, unsigned offset)
-+{
-+ return __raw_readl(p->base + offset);
++ return 0;
++
++out_infos:
++ spin_lock(&ubifs_infos_lock);
++ list_del(&c->infos_list);
++ spin_unlock(&ubifs_infos_lock);
++out_orphans:
++ free_orphans(c);
++out_journal:
++ destroy_journal(c);
++out_lpt:
++ ubifs_lpt_free(c, 0);
++out_master:
++ kfree(c->mst_node);
++ kfree(c->rcvrd_mst_node);
++out_stop:
++ if (c->bgt)
++ kthread_stop(c->bgt);
++out_wbufs:
++ free_wbufs(c);
++out_cbuf:
++ kfree(c->cbuf);
++out_dereg:
++ dbg_failure_mode_deregistration(c);
++out_free:
++ vfree(c->ileb_buf);
++ vfree(c->sbuf);
++ kfree(c->bottom_up_buf);
++ UBIFS_DBG(vfree(c->dbg_buf));
++ return err;
+}
+
-+static inline void __iomem *pwmc_regs(const struct pwm *p, int index)
++/**
++ * ubifs_umount - un-mount UBIFS file-system.
++ * @c: UBIFS file-system description object
++ *
++ * Note, this function is called to free allocated resourced when un-mounting,
++ * as well as free resources when an error occurred while we were half way
++ * through mounting (error path cleanup function). So it has to make sure the
++ * resource was actually allocated before freeing it.
++ */
++static void ubifs_umount(struct ubifs_info *c)
+{
-+ return p->base + 0x200 + index * 0x20;
-+}
++ dbg_gen("un-mounting UBI device %d, volume %d", c->vi.ubi_num,
++ c->vi.vol_id);
+
-+static struct pwm *pwm;
++ spin_lock(&ubifs_infos_lock);
++ list_del(&c->infos_list);
++ spin_unlock(&ubifs_infos_lock);
+
-+static void pwm_dumpregs(struct pwm_channel *ch, char *tag)
-+{
-+ struct device *dev = &pwm->pdev->dev;
++ if (c->bgt)
++ kthread_stop(c->bgt);
+
-+ dev_dbg(dev, "%s: mr %08x, sr %08x, imr %08x\n",
-+ tag,
-+ pwm_readl(pwm, PWM_MR),
-+ pwm_readl(pwm, PWM_SR),
-+ pwm_readl(pwm, PWM_IMR));
-+ dev_dbg(dev,
-+ "pwm ch%d - mr %08x, dty %u, prd %u, cnt %u\n",
-+ ch->index,
-+ pwm_channel_readl(ch, PWM_CMR),
-+ pwm_channel_readl(ch, PWM_CDTY),
-+ pwm_channel_readl(ch, PWM_CPRD),
-+ pwm_channel_readl(ch, PWM_CCNT));
-+}
++ destroy_journal(c);
++ free_wbufs(c);
++ free_orphans(c);
++ ubifs_lpt_free(c, 0);
+
++ kfree(c->cbuf);
++ kfree(c->rcvrd_mst_node);
++ kfree(c->mst_node);
++ vfree(c->sbuf);
++ kfree(c->bottom_up_buf);
++ UBIFS_DBG(vfree(c->dbg_buf));
++ vfree(c->ileb_buf);
++ dbg_failure_mode_deregistration(c);
++}
+
+/**
-+ * pwm_channel_alloc - allocate an unused PWM channel
-+ * @index: identifies the channel
-+ * @ch: structure to be initialized
++ * ubifs_remount_rw - re-mount in read-write mode.
++ * @c: UBIFS file-system description object
+ *
-+ * Drivers allocate PWM channels according to the board's wiring, and
-+ * matching board-specific setup code. Returns zero or negative errno.
++ * UBIFS avoids allocating many unnecessary resources when mounted in read-only
++ * mode. This function allocates the needed resources and re-mounts UBIFS in
++ * read-write mode.
+ */
-+int pwm_channel_alloc(int index, struct pwm_channel *ch)
++static int ubifs_remount_rw(struct ubifs_info *c)
+{
-+ unsigned long flags;
-+ int status = 0;
-+
-+ /* insist on PWM init, with this signal pinned out */
-+ if (!pwm || !(pwm->mask & 1 << index))
-+ return -ENODEV;
++ int err, lnum;
+
-+ if (index < 0 || index >= PWM_NCHAN || !ch)
++ if (c->ro_media)
+ return -EINVAL;
-+ memset(ch, 0, sizeof *ch);
+
-+ spin_lock_irqsave(&pwm->lock, flags);
-+ if (pwm->channel[index])
-+ status = -EBUSY;
-+ else {
-+ clk_enable(pwm->clk);
++ mutex_lock(&c->umount_mutex);
++ c->remounting_rw = 1;
+
-+ ch->regs = pwmc_regs(pwm, index);
-+ ch->index = index;
++ /* Check for enough free space */
++ if (ubifs_calc_available(c) <= 0) {
++ ubifs_err("insufficient available space");
++ err = -EINVAL;
++ goto out;
++ }
+
-+ /* REVISIT: ap7000 seems to go 2x as fast as we expect!! */
-+ ch->mck = clk_get_rate(pwm->clk);
++ if (c->old_leb_cnt != c->leb_cnt) {
++ struct ubifs_sb_node *sup;
+
-+ pwm->channel[index] = ch;
-+ pwm->handler[index] = NULL;
++ sup = ubifs_read_sb_node(c);
++ if (IS_ERR(sup)) {
++ err = PTR_ERR(sup);
++ goto out;
++ }
++ sup->leb_cnt = cpu_to_le32(c->leb_cnt);
++ err = ubifs_write_sb_node(c, sup);
++ if (err)
++ goto out;
++ }
+
-+ /* channel and irq are always disabled when we return */
-+ pwm_writel(pwm, PWM_DIS, 1 << index);
-+ pwm_writel(pwm, PWM_IDR, 1 << index);
++ if (c->need_recovery) {
++ ubifs_msg("completing deferred recovery");
++ err = ubifs_write_rcvrd_mst_node(c);
++ if (err)
++ goto out;
++ err = ubifs_recover_size(c);
++ if (err)
++ goto out;
++ err = ubifs_clean_lebs(c, c->sbuf);
++ if (err)
++ goto out;
++ err = ubifs_recover_inl_heads(c, c->sbuf);
++ if (err)
++ goto out;
+ }
-+ spin_unlock_irqrestore(&pwm->lock, flags);
-+ return status;
-+}
-+EXPORT_SYMBOL(pwm_channel_alloc);
+
-+static int pwmcheck(struct pwm_channel *ch)
-+{
-+ int index;
++ if (!(c->mst_node->flags & cpu_to_le32(UBIFS_MST_DIRTY))) {
++ c->mst_node->flags |= cpu_to_le32(UBIFS_MST_DIRTY);
++ err = ubifs_write_master(c);
++ if (err)
++ goto out;
++ }
+
-+ if (!pwm)
-+ return -ENODEV;
-+ if (!ch)
-+ return -EINVAL;
-+ index = ch->index;
-+ if (index < 0 || index >= PWM_NCHAN || pwm->channel[index] != ch)
-+ return -EINVAL;
++ c->ileb_buf = vmalloc(c->leb_size);
++ if (!c->ileb_buf) {
++ err = -ENOMEM;
++ goto out;
++ }
+
-+ return index;
-+}
++ err = ubifs_lpt_init(c, 0, 1);
++ if (err)
++ goto out;
+
-+/**
-+ * pwm_channel_free - release a previously allocated channel
-+ * @ch: the channel being released
-+ *
-+ * The channel is completely shut down (counter and IRQ disabled),
-+ * and made available for re-use. Returns zero, or negative errno.
-+ */
-+int pwm_channel_free(struct pwm_channel *ch)
-+{
-+ unsigned long flags;
-+ int t;
++ err = alloc_wbufs(c);
++ if (err)
++ goto out;
+
-+ spin_lock_irqsave(&pwm->lock, flags);
-+ t = pwmcheck(ch);
-+ if (t >= 0) {
-+ pwm->channel[t] = NULL;
-+ pwm->handler[t] = NULL;
++ ubifs_create_buds_lists(c);
++
++ /* Create background thread */
++ c->bgt = kthread_create(ubifs_bg_thread, c, c->bgt_name);
++ if (!c->bgt)
++ c->bgt = ERR_PTR(-EINVAL);
++ if (IS_ERR(c->bgt)) {
++ err = PTR_ERR(c->bgt);
++ c->bgt = NULL;
++ ubifs_err("cannot spawn \"%s\", error %d",
++ c->bgt_name, err);
++ return err;
++ }
++ wake_up_process(c->bgt);
+
-+ /* channel and irq are always disabled when we return */
-+ pwm_writel(pwm, PWM_DIS, 1 << t);
-+ pwm_writel(pwm, PWM_IDR, 1 << t);
++ c->orph_buf = vmalloc(c->leb_size);
++ if (!c->orph_buf)
++ return -ENOMEM;
+
-+ clk_disable(pwm->clk);
-+ t = 0;
++ /* Check for enough log space */
++ lnum = c->lhead_lnum + 1;
++ if (lnum >= UBIFS_LOG_LNUM + c->log_lebs)
++ lnum = UBIFS_LOG_LNUM;
++ if (lnum == c->ltail_lnum) {
++ err = ubifs_consolidate_log(c);
++ if (err)
++ goto out;
+ }
-+ spin_unlock_irqrestore(&pwm->lock, flags);
-+ return t;
-+}
-+EXPORT_SYMBOL(pwm_channel_free);
+
-+int __pwm_channel_onoff(struct pwm_channel *ch, int enabled)
-+{
-+ unsigned long flags;
-+ int t;
-+
-+ /* OMITTED FUNCTIONALITY: starting several channels in synch */
++ if (c->need_recovery)
++ err = ubifs_rcvry_gc_commit(c);
++ else
++ err = take_gc_lnum(c);
++ if (err)
++ goto out;
+
-+ spin_lock_irqsave(&pwm->lock, flags);
-+ t = pwmcheck(ch);
-+ if (t >= 0) {
-+ pwm_writel(pwm, enabled ? PWM_ENA : PWM_DIS, 1 << t);
-+ t = 0;
-+ pwm_dumpregs(ch, enabled ? "enable" : "disable");
++ if (c->need_recovery) {
++ c->need_recovery = 0;
++ ubifs_msg("deferred recovery completed");
+ }
-+ spin_unlock_irqrestore(&pwm->lock, flags);
+
-+ return t;
++ dbg_gen("re-mounted read-write");
++ c->vfs_sb->s_flags &= ~MS_RDONLY;
++ c->remounting_rw = 0;
++ mutex_unlock(&c->umount_mutex);
++ return 0;
++
++out:
++ vfree(c->orph_buf);
++ c->orph_buf = NULL;
++ if (c->bgt) {
++ kthread_stop(c->bgt);
++ c->bgt = NULL;
++ }
++ free_wbufs(c);
++ vfree(c->ileb_buf);
++ c->ileb_buf = NULL;
++ ubifs_lpt_free(c, 1);
++ c->remounting_rw = 0;
++ mutex_unlock(&c->umount_mutex);
++ return err;
+}
-+EXPORT_SYMBOL(__pwm_channel_onoff);
+
+/**
-+ * pwm_clk_alloc - allocate and configure CLKA or CLKB
-+ * @prescale: from 0..10, the power of two used to divide MCK
-+ * @div: from 1..255, the linear divisor to use
++ * commit_on_unmount - commit the journal when un-mounting.
++ * @c: UBIFS file-system description object
++ *
++ * This function is called during un-mounting and it commits the journal unless
++ * the "fast unmount" mode is enabled. It also avoids committing the journal if
++ * it contains too few data.
+ *
-+ * Returns PWM_CPR_CLKA, PWM_CPR_CLKB, or negative errno. The allocated
-+ * clock will run with a period of (2^prescale * div) / MCK, or twice as
-+ * long if center aligned PWM output is used. The clock must later be
-+ * deconfigured using pwm_clk_free().
++ * Sometimes recovery requires the journal to be committed at least once, and
++ * this function takes care about this.
+ */
-+int pwm_clk_alloc(unsigned prescale, unsigned div)
++static void commit_on_unmount(struct ubifs_info *c)
+{
-+ unsigned long flags;
-+ u32 mr;
-+ u32 val = (prescale << 8) | div;
-+ int ret = -EBUSY;
-+
-+ if (prescale >= 10 || div == 0 || div > 255)
-+ return -EINVAL;
++ if (!c->fast_unmount) {
++ long long bud_bytes;
+
-+ spin_lock_irqsave(&pwm->lock, flags);
-+ mr = pwm_readl(pwm, PWM_MR);
-+ if ((mr & 0xffff) == 0) {
-+ mr |= val;
-+ ret = PWM_CPR_CLKA;
-+ }
-+ if ((mr & (0xffff << 16)) == 0) {
-+ mr |= val << 16;
-+ ret = PWM_CPR_CLKB;
++ spin_lock(&c->buds_lock);
++ bud_bytes = c->bud_bytes;
++ spin_unlock(&c->buds_lock);
++ if (bud_bytes > c->leb_size)
++ ubifs_run_commit(c);
+ }
-+ if (ret > 0)
-+ pwm_writel(pwm, PWM_MR, mr);
-+ spin_unlock_irqrestore(&pwm->lock, flags);
-+ return ret;
+}
-+EXPORT_SYMBOL(pwm_clk_alloc);
+
+/**
-+ * pwm_clk_free - deconfigure and release CLKA or CLKB
++ * ubifs_remount_ro - re-mount in read-only mode.
++ * @c: UBIFS file-system description object
+ *
-+ * Reverses the effect of pwm_clk_alloc().
++ * We rely on VFS to have stopped writing. Possibly the background thread could
++ * be running a commit, however kthread_stop will wait in that case.
+ */
-+void pwm_clk_free(unsigned clk)
++static void ubifs_remount_ro(struct ubifs_info *c)
+{
-+ unsigned long flags;
-+ u32 mr;
++ int i, err;
+
-+ spin_lock_irqsave(&pwm->lock, flags);
-+ mr = pwm_readl(pwm, PWM_MR);
-+ if (clk == PWM_CPR_CLKA)
-+ pwm_writel(pwm, PWM_MR, mr & ~(0xffff << 0));
-+ if (clk == PWM_CPR_CLKB)
-+ pwm_writel(pwm, PWM_MR, mr & ~(0xffff << 16));
-+ spin_unlock_irqrestore(&pwm->lock, flags);
-+}
-+EXPORT_SYMBOL(pwm_clk_free);
++ ubifs_assert(!c->need_recovery);
++ commit_on_unmount(c);
+
-+/**
-+ * pwm_channel_handler - manage channel's IRQ handler
-+ * @ch: the channel
-+ * @handler: the handler to use, possibly NULL
-+ *
-+ * If the handler is non-null, the handler will be called after every
-+ * period of this PWM channel. If the handler is null, this channel
-+ * won't generate an IRQ.
-+ */
-+int pwm_channel_handler(struct pwm_channel *ch,
-+ void (*handler)(struct pwm_channel *ch))
-+{
-+ unsigned long flags;
-+ int t;
++ mutex_lock(&c->umount_mutex);
++ if (c->bgt) {
++ kthread_stop(c->bgt);
++ c->bgt = NULL;
++ }
++
++ for (i = 0; i < c->jhead_cnt; i++) {
++ ubifs_wbuf_sync(&c->jheads[i].wbuf);
++ del_timer_sync(&c->jheads[i].wbuf.timer);
++ }
+
-+ spin_lock_irqsave(&pwm->lock, flags);
-+ t = pwmcheck(ch);
-+ if (t >= 0) {
-+ pwm->handler[t] = handler;
-+ pwm_writel(pwm, handler ? PWM_IER : PWM_IDR, 1 << t);
-+ t = 0;
++ if (!c->ro_media) {
++ c->mst_node->flags &= ~cpu_to_le32(UBIFS_MST_DIRTY);
++ c->mst_node->flags |= cpu_to_le32(UBIFS_MST_NO_ORPHS);
++ c->mst_node->gc_lnum = cpu_to_le32(c->gc_lnum);
++ err = ubifs_write_master(c);
++ if (err)
++ ubifs_ro_mode(c, err);
+ }
-+ spin_unlock_irqrestore(&pwm->lock, flags);
+
-+ return t;
++ ubifs_destroy_idx_gc(c);
++ free_wbufs(c);
++ vfree(c->orph_buf);
++ c->orph_buf = NULL;
++ vfree(c->ileb_buf);
++ c->ileb_buf = NULL;
++ ubifs_lpt_free(c, 1);
++ mutex_unlock(&c->umount_mutex);
+}
-+EXPORT_SYMBOL(pwm_channel_handler);
+
-+static irqreturn_t pwm_irq(int id, void *_pwm)
++static void ubifs_put_super(struct super_block *sb)
+{
-+ struct pwm *p = _pwm;
-+ irqreturn_t handled = IRQ_NONE;
-+ u32 irqstat;
-+ int index;
++ int i;
++ struct ubifs_info *c = sb->s_fs_info;
+
-+ spin_lock(&p->lock);
++ ubifs_msg("un-mount UBI device %d, volume %d", c->vi.ubi_num,
++ c->vi.vol_id);
++ /*
++ * The following asserts are only valid if there has not been a failure
++ * of the media. For example, there will be dirty inodes if we failed
++ * to write them back because of I/O errors.
++ */
++ ubifs_assert(atomic_long_read(&c->dirty_pg_cnt) == 0);
++ ubifs_assert(atomic_long_read(&c->dirty_ino_cnt) == 0);
++ ubifs_assert(c->budg_idx_growth == 0);
++ ubifs_assert(c->budg_data_growth == 0);
+
-+ /* ack irqs, then handle them */
-+ irqstat = pwm_readl(pwm, PWM_ISR);
++ /*
++ * The 'c->umount_lock' prevents races between UBIFS memory shrinker
++ * and file system un-mount. Namely, it prevents the shrinker from
++ * picking this superblock for shrinking - it will be just skipped if
++ * the mutex is locked.
++ */
++ mutex_lock(&c->umount_mutex);
++ if (!(c->vfs_sb->s_flags & MS_RDONLY)) {
++ /*
++ * First of all kill the background thread to make sure it does
++ * not interfere with un-mounting and freeing resources.
++ */
++ if (c->bgt) {
++ kthread_stop(c->bgt);
++ c->bgt = NULL;
++ }
+
-+ while (irqstat) {
-+ struct pwm_channel *ch;
-+ void (*handler)(struct pwm_channel *ch);
++ /* Synchronize write-buffers */
++ if (c->jheads)
++ for (i = 0; i < c->jhead_cnt; i++) {
++ ubifs_wbuf_sync(&c->jheads[i].wbuf);
++ del_timer_sync(&c->jheads[i].wbuf.timer);
++ }
+
-+ index = ffs(irqstat) - 1;
-+ irqstat &= ~(1 << index);
-+ ch = pwm->channel[index];
-+ handler = pwm->handler[index];
-+ if (handler && ch) {
-+ spin_unlock(&p->lock);
-+ handler(ch);
-+ spin_lock(&p->lock);
-+ handled = IRQ_HANDLED;
++ /*
++ * On fatal errors c->ro_media is set to 1, in which case we do
++ * not write the master node.
++ */
++ if (!c->ro_media) {
++ /*
++ * We are being cleanly unmounted which means the
++ * orphans were killed - indicate this in the master
++ * node. Also save the reserved GC LEB number.
++ */
++ int err;
++
++ c->mst_node->flags &= ~cpu_to_le32(UBIFS_MST_DIRTY);
++ c->mst_node->flags |= cpu_to_le32(UBIFS_MST_NO_ORPHS);
++ c->mst_node->gc_lnum = cpu_to_le32(c->gc_lnum);
++ err = ubifs_write_master(c);
++ if (err)
++ /*
++ * Recovery will attempt to fix the master area
++ * next mount, so we just print a message and
++ * continue to unmount normally.
++ */
++ ubifs_err("failed to write master node, "
++ "error %d", err);
+ }
+ }
+
-+ spin_unlock(&p->lock);
-+ return handled;
++ ubifs_umount(c);
++ ubi_close_volume(c->ubi);
++ mutex_unlock(&c->umount_mutex);
++ kfree(c);
+}
+
-+static int __init pwm_probe(struct platform_device *pdev)
++static int ubifs_remount_fs(struct super_block *sb, int *flags, char *data)
+{
-+ struct resource *r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-+ int irq = platform_get_irq(pdev, 0);
-+ u32 *mp = pdev->dev.platform_data;
-+ struct pwm *p;
-+ int status = -EIO;
-+
-+ if (pwm)
-+ return -EBUSY;
-+ if (!r || irq < 0 || !mp || !*mp)
-+ return -ENODEV;
-+ if (*mp & ~((1<<PWM_NCHAN)-1)) {
-+ dev_warn(&pdev->dev, "mask 0x%x ... more than %d channels\n",
-+ *mp, PWM_NCHAN);
-+ return -EINVAL;
-+ }
++ int err;
++ struct ubifs_info *c = sb->s_fs_info;
+
-+ p = kzalloc(sizeof(*p), GFP_KERNEL);
-+ if (!p)
-+ return -ENOMEM;
++ dbg_gen("old flags %#lx, new flags %#x", sb->s_flags, *flags);
+
-+ spin_lock_init(&p->lock);
-+ p->pdev = pdev;
-+ p->mask = *mp;
-+ p->irq = irq;
-+ p->base = ioremap(r->start, r->end - r->start + 1);
-+ if (!p->base)
-+ goto fail;
-+ p->clk = clk_get(&pdev->dev, "mck");
-+ if (IS_ERR(p->clk)) {
-+ status = PTR_ERR(p->clk);
-+ p->clk = NULL;
-+ goto fail;
++ err = ubifs_parse_options(c, data, 1);
++ if (err) {
++ ubifs_err("invalid or unknown remount parameter");
++ return err;
+ }
-+
-+ status = request_irq(irq, pwm_irq, 0, pdev->name, p);
-+ if (status < 0)
-+ goto fail;
-+
-+ pwm = p;
-+ platform_set_drvdata(pdev, p);
++ if ((sb->s_flags & MS_RDONLY) && !(*flags & MS_RDONLY)) {
++ err = ubifs_remount_rw(c);
++ if (err)
++ return err;
++ } else if (!(sb->s_flags & MS_RDONLY) && (*flags & MS_RDONLY))
++ ubifs_remount_ro(c);
+
+ return 0;
-+
-+fail:
-+ if (p->clk)
-+ clk_put(p->clk);
-+ if (p->base)
-+ iounmap(p->base);
-+
-+ kfree(p);
-+ return status;
+}
+
-+static int __exit pwm_remove(struct platform_device *pdev)
++struct super_operations ubifs_super_operations = {
++ .alloc_inode = ubifs_alloc_inode,
++ .destroy_inode = ubifs_destroy_inode,
++ .put_super = ubifs_put_super,
++ .write_inode = ubifs_write_inode,
++ .delete_inode = ubifs_delete_inode,
++ .statfs = ubifs_statfs,
++ .dirty_inode = ubifs_dirty_inode,
++ .remount_fs = ubifs_remount_fs,
++ .show_options = ubifs_show_options,
++ .sync_fs = ubifs_sync_fs,
++};
++
++/**
++ * open_ubi - parse UBI device name string and open the UBI device.
++ * @name: UBI volume name
++ * @mode: UBI volume open mode
++ *
++ * There are several ways to specify UBI volumes when mounting UBIFS:
++ * o ubiX_Y - UBI device number X, volume Y;
++ * o ubiY - UBI device number 0, volume Y;
++ * o ubiX:NAME - mount UBI device X, volume with name NAME;
++ * o ubi:NAME - mount UBI device 0, volume with name NAME.
++ *
++ * Alternative '!' separator may be used instead of ':' (because some shells
++ * like busybox may interpret ':' as an NFS host name separator). This function
++ * returns ubi volume object in case of success and a negative error code in
++ * case of failure.
++ */
++static struct ubi_volume_desc *open_ubi(const char *name, int mode)
+{
-+ struct pwm *p = platform_get_drvdata(pdev);
++ int dev, vol;
++ char *endptr;
+
-+ if (p != pwm)
-+ return -EINVAL;
++ if (name[0] != 'u' || name[1] != 'b' || name[2] != 'i')
++ return ERR_PTR(-EINVAL);
+
-+ clk_enable(pwm->clk);
-+ pwm_writel(pwm, PWM_DIS, (1 << PWM_NCHAN) - 1);
-+ pwm_writel(pwm, PWM_IDR, (1 << PWM_NCHAN) - 1);
-+ clk_disable(pwm->clk);
++ /* ubi:NAME method */
++ if ((name[3] == ':' || name[3] == '!') && name[4] != '\0')
++ return ubi_open_volume_nm(0, name + 4, mode);
+
-+ pwm = NULL;
++ if (!isdigit(name[3]))
++ return ERR_PTR(-EINVAL);
+
-+ free_irq(p->irq, p);
-+ clk_put(p->clk);
-+ iounmap(p->base);
-+ kfree(p);
++ dev = simple_strtoul(name + 3, &endptr, 0);
+
-+ return 0;
-+}
++ /* ubiY method */
++ if (*endptr == '\0')
++ return ubi_open_volume(0, dev, mode);
+
-+static struct platform_driver atmel_pwm_driver = {
-+ .driver = {
-+ .name = "atmel_pwm",
-+ .owner = THIS_MODULE,
-+ },
-+ .remove = __exit_p(pwm_remove),
++ /* ubiX_Y method */
++ if (*endptr == '_' && isdigit(endptr[1])) {
++ vol = simple_strtoul(endptr + 1, &endptr, 0);
++ if (*endptr != '\0')
++ return ERR_PTR(-EINVAL);
++ return ubi_open_volume(dev, vol, mode);
++ }
+
-+ /* NOTE: PWM can keep running in AVR32 "idle" and "frozen" states;
-+ * and all AT91sam9263 states, albeit at reduced clock rate if
-+ * MCK becomes the slow clock (i.e. what Linux labels STR).
-+ */
-+};
++ /* ubiX:NAME method */
++ if ((*endptr == ':' || *endptr == '!') && endptr[1] != '\0')
++ return ubi_open_volume_nm(dev, ++endptr, mode);
+
-+static int __init pwm_init(void)
-+{
-+ return platform_driver_probe(&atmel_pwm_driver, pwm_probe);
++ return ERR_PTR(-EINVAL);
+}
-+module_init(pwm_init);
+
-+static void __exit pwm_exit(void)
++static int ubifs_fill_super(struct super_block *sb, void *data, int silent)
+{
-+ platform_driver_unregister(&atmel_pwm_driver);
-+}
-+module_exit(pwm_exit);
-+
-+MODULE_DESCRIPTION("Driver for AT32/AT91 PWM module");
-+MODULE_LICENSE("GPL");
---- /dev/null
-+++ b/drivers/misc/atmel_tclib.c
-@@ -0,0 +1,161 @@
-+#include <linux/atmel_tc.h>
-+#include <linux/clk.h>
-+#include <linux/err.h>
-+#include <linux/init.h>
-+#include <linux/io.h>
-+#include <linux/ioport.h>
-+#include <linux/kernel.h>
-+#include <linux/platform_device.h>
-+
-+/* Number of bytes to reserve for the iomem resource */
-+#define ATMEL_TC_IOMEM_SIZE 256
-+
-+
-+/*
-+ * This is a thin library to solve the problem of how to portably allocate
-+ * one of the TC blocks. For simplicity, it doesn't currently expect to
-+ * share individual timers between different drivers.
-+ */
-+
-+#if defined(CONFIG_AVR32)
-+/* AVR32 has these divide PBB */
-+const u8 atmel_tc_divisors[5] = { 0, 4, 8, 16, 32, };
-+EXPORT_SYMBOL(atmel_tc_divisors);
-+
-+#elif defined(CONFIG_ARCH_AT91)
-+/* AT91 has these divide MCK */
-+const u8 atmel_tc_divisors[5] = { 2, 8, 32, 128, 0, };
-+EXPORT_SYMBOL(atmel_tc_divisors);
++ struct ubi_volume_desc *ubi = sb->s_fs_info;
++ struct ubifs_info *c;
++ struct inode *root;
++ int err;
+
-+#endif
++ c = kzalloc(sizeof(struct ubifs_info), GFP_KERNEL);
++ if (!c)
++ return -ENOMEM;
+
-+static DEFINE_SPINLOCK(tc_list_lock);
-+static LIST_HEAD(tc_list);
++ spin_lock_init(&c->cnt_lock);
++ spin_lock_init(&c->cs_lock);
++ spin_lock_init(&c->buds_lock);
++ spin_lock_init(&c->space_lock);
++ spin_lock_init(&c->orphan_lock);
++ init_rwsem(&c->commit_sem);
++ mutex_init(&c->lp_mutex);
++ mutex_init(&c->tnc_mutex);
++ mutex_init(&c->log_mutex);
++ mutex_init(&c->mst_mutex);
++ mutex_init(&c->umount_mutex);
++ init_waitqueue_head(&c->cmt_wq);
++ c->buds = RB_ROOT;
++ c->old_idx = RB_ROOT;
++ c->size_tree = RB_ROOT;
++ c->orph_tree = RB_ROOT;
++ INIT_LIST_HEAD(&c->infos_list);
++ INIT_LIST_HEAD(&c->idx_gc);
++ INIT_LIST_HEAD(&c->replay_list);
++ INIT_LIST_HEAD(&c->replay_buds);
++ INIT_LIST_HEAD(&c->uncat_list);
++ INIT_LIST_HEAD(&c->empty_list);
++ INIT_LIST_HEAD(&c->freeable_list);
++ INIT_LIST_HEAD(&c->frdi_idx_list);
++ INIT_LIST_HEAD(&c->unclean_leb_list);
++ INIT_LIST_HEAD(&c->old_buds);
++ INIT_LIST_HEAD(&c->orph_list);
++ INIT_LIST_HEAD(&c->orph_new);
++
++ c->highest_inum = UBIFS_FIRST_INO;
++ get_random_bytes(&c->vfs_gen, sizeof(int));
++ c->lhead_lnum = c->ltail_lnum = UBIFS_LOG_LNUM;
++
++ ubi_get_volume_info(ubi, &c->vi);
++ ubi_get_device_info(c->vi.ubi_num, &c->di);
++
++ /* Re-open the UBI device in read-write mode */
++ c->ubi = ubi_open_volume(c->vi.ubi_num, c->vi.vol_id, UBI_READWRITE);
++ if (IS_ERR(c->ubi)) {
++ err = PTR_ERR(c->ubi);
++ goto out_free;
++ }
+
-+/**
-+ * atmel_tc_alloc - allocate a specified TC block
-+ * @block: which block to allocate
-+ * @name: name to be associated with the iomem resource
-+ *
-+ * Caller allocates a block. If it is available, a pointer to a
-+ * pre-initialized struct atmel_tc is returned. The caller can access
-+ * the registers directly through the "regs" field.
-+ */
-+struct atmel_tc *atmel_tc_alloc(unsigned block, const char *name)
-+{
-+ struct atmel_tc *tc;
-+ struct platform_device *pdev = NULL;
-+ struct resource *r;
++ err = ubifs_parse_options(c, data, 0);
++ if (err)
++ goto out_close;
++
++ c->vfs_sb = sb;
++
++ sb->s_fs_info = c;
++ sb->s_magic = UBIFS_SUPER_MAGIC;
++ sb->s_blocksize = UBIFS_BLOCK_SIZE;
++ sb->s_blocksize_bits = UBIFS_BLOCK_SHIFT;
++ sb->s_dev = c->vi.cdev;
++ sb->s_maxbytes = c->max_inode_sz = key_max_inode_size(c);
++ if (c->max_inode_sz > MAX_LFS_FILESIZE)
++ sb->s_maxbytes = c->max_inode_sz = MAX_LFS_FILESIZE;
++ sb->s_op = &ubifs_super_operations;
++
++ mutex_lock(&c->umount_mutex);
++ err = mount_ubifs(c);
++ if (err) {
++ ubifs_assert(err < 0);
++ goto out_unlock;
++ }
+
-+ spin_lock(&tc_list_lock);
-+ list_for_each_entry(tc, &tc_list, node) {
-+ if (tc->pdev->id == block) {
-+ pdev = tc->pdev;
-+ break;
-+ }
++ /* Read the root inode */
++ root = ubifs_iget(sb, UBIFS_ROOT_INO);
++ if (IS_ERR(root)) {
++ err = PTR_ERR(root);
++ goto out_umount;
+ }
+
-+ if (!pdev || tc->iomem)
-+ goto fail;
++ sb->s_root = d_alloc_root(root);
++ if (!sb->s_root)
++ goto out_iput;
+
-+ r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-+ r = request_mem_region(r->start, ATMEL_TC_IOMEM_SIZE, name);
-+ if (!r)
-+ goto fail;
++ mutex_unlock(&c->umount_mutex);
+
-+ tc->regs = ioremap(r->start, ATMEL_TC_IOMEM_SIZE);
-+ if (!tc->regs)
-+ goto fail_ioremap;
++ return 0;
+
-+ tc->iomem = r;
++out_iput:
++ iput(root);
++out_umount:
++ ubifs_umount(c);
++out_unlock:
++ mutex_unlock(&c->umount_mutex);
++out_close:
++ ubi_close_volume(c->ubi);
++out_free:
++ kfree(c);
++ return err;
++}
+
-+out:
-+ spin_unlock(&tc_list_lock);
-+ return tc;
++static int sb_test(struct super_block *sb, void *data)
++{
++ dev_t *dev = data;
+
-+fail_ioremap:
-+ release_resource(r);
-+fail:
-+ tc = NULL;
-+ goto out;
++ return sb->s_dev == *dev;
+}
-+EXPORT_SYMBOL_GPL(atmel_tc_alloc);
+
-+/**
-+ * atmel_tc_free - release a specified TC block
-+ * @tc: Timer/counter block that was returned by atmel_tc_alloc()
-+ *
-+ * This reverses the effect of atmel_tc_alloc(), unmapping the I/O
-+ * registers, invalidating the resource returned by that routine and
-+ * making the TC available to other drivers.
-+ */
-+void atmel_tc_free(struct atmel_tc *tc)
++static int sb_set(struct super_block *sb, void *data)
+{
-+ spin_lock(&tc_list_lock);
-+ if (tc->regs) {
-+ iounmap(tc->regs);
-+ release_resource(tc->iomem);
-+ tc->regs = NULL;
-+ tc->iomem = NULL;
-+ }
-+ spin_unlock(&tc_list_lock);
++ dev_t *dev = data;
++
++ sb->s_dev = *dev;
++ return 0;
+}
-+EXPORT_SYMBOL_GPL(atmel_tc_free);
+
-+static int __init tc_probe(struct platform_device *pdev)
++static int ubifs_get_sb(struct file_system_type *fs_type, int flags,
++ const char *name, void *data, struct vfsmount *mnt)
+{
-+ struct atmel_tc *tc;
-+ struct clk *clk;
-+ int irq;
++ struct ubi_volume_desc *ubi;
++ struct ubi_volume_info vi;
++ struct super_block *sb;
++ int err;
+
-+ if (!platform_get_resource(pdev, IORESOURCE_MEM, 0))
-+ return -EINVAL;
++ dbg_gen("name %s, flags %#x", name, flags);
+
-+ irq = platform_get_irq(pdev, 0);
-+ if (irq < 0)
-+ return -EINVAL;
++ /*
++ * Get UBI device number and volume ID. Mount it read-only so far
++ * because this might be a new mount point, and UBI allows only one
++ * read-write user at a time.
++ */
++ ubi = open_ubi(name, UBI_READONLY);
++ if (IS_ERR(ubi)) {
++ ubifs_err("cannot open \"%s\", error %d",
++ name, (int)PTR_ERR(ubi));
++ return PTR_ERR(ubi);
++ }
++ ubi_get_volume_info(ubi, &vi);
+
-+ tc = kzalloc(sizeof(struct atmel_tc), GFP_KERNEL);
-+ if (!tc)
-+ return -ENOMEM;
++ dbg_gen("opened ubi%d_%d", vi.ubi_num, vi.vol_id);
+
-+ tc->pdev = pdev;
++ sb = sget(fs_type, &sb_test, &sb_set, &vi.cdev);
++ if (IS_ERR(sb)) {
++ err = PTR_ERR(sb);
++ goto out_close;
++ }
+
-+ clk = clk_get(&pdev->dev, "t0_clk");
-+ if (IS_ERR(clk)) {
-+ kfree(tc);
-+ return -EINVAL;
++ if (sb->s_root) {
++ /* A new mount point for already mounted UBIFS */
++ dbg_gen("this ubi volume is already mounted");
++ if ((flags ^ sb->s_flags) & MS_RDONLY) {
++ err = -EBUSY;
++ goto out_deact;
++ }
++ } else {
++ sb->s_flags = flags;
++ /*
++ * Pass 'ubi' to 'fill_super()' in sb->s_fs_info where it is
++ * replaced by 'c'.
++ */
++ sb->s_fs_info = ubi;
++ err = ubifs_fill_super(sb, data, flags & MS_SILENT ? 1 : 0);
++ if (err)
++ goto out_deact;
++ /* We do not support atime */
++ sb->s_flags |= MS_ACTIVE | MS_NOATIME;
+ }
+
-+ tc->clk[0] = clk;
-+ tc->clk[1] = clk_get(&pdev->dev, "t1_clk");
-+ if (IS_ERR(tc->clk[1]))
-+ tc->clk[1] = clk;
-+ tc->clk[2] = clk_get(&pdev->dev, "t2_clk");
-+ if (IS_ERR(tc->clk[2]))
-+ tc->clk[2] = clk;
++ /* 'fill_super()' opens ubi again so we must close it here */
++ ubi_close_volume(ubi);
+
-+ tc->irq[0] = irq;
-+ tc->irq[1] = platform_get_irq(pdev, 1);
-+ if (tc->irq[1] < 0)
-+ tc->irq[1] = irq;
-+ tc->irq[2] = platform_get_irq(pdev, 2);
-+ if (tc->irq[2] < 0)
-+ tc->irq[2] = irq;
++ return simple_set_mnt(mnt, sb);
+
-+ spin_lock(&tc_list_lock);
-+ list_add_tail(&tc->node, &tc_list);
-+ spin_unlock(&tc_list_lock);
++out_deact:
++ up_write(&sb->s_umount);
++ deactivate_super(sb);
++out_close:
++ ubi_close_volume(ubi);
++ return err;
++}
+
-+ return 0;
++static void ubifs_kill_sb(struct super_block *sb)
++{
++ struct ubifs_info *c = sb->s_fs_info;
++
++ /*
++ * We do 'commit_on_unmount()' here instead of 'ubifs_put_super()'
++ * in order to be outside BKL.
++ */
++ if (sb->s_root && !(sb->s_flags & MS_RDONLY))
++ commit_on_unmount(c);
++ /* The un-mount routine is actually done in put_super() */
++ generic_shutdown_super(sb);
+}
+
-+static struct platform_driver tc_driver = {
-+ .driver.name = "atmel_tcb",
++static struct file_system_type ubifs_fs_type = {
++ .name = "ubifs",
++ .owner = THIS_MODULE,
++ .get_sb = ubifs_get_sb,
++ .kill_sb = ubifs_kill_sb
+};
+
-+static int __init tc_init(void)
++/*
++ * Inode slab cache constructor.
++ */
++static void inode_slab_ctor(struct kmem_cache *cachep, void *obj)
+{
-+ return platform_driver_probe(&tc_driver, tc_probe);
++ struct ubifs_inode *inode = obj;
++ inode_init_once(&inode->vfs_inode);
+}
-+arch_initcall(tc_init);
---- a/drivers/misc/Kconfig
-+++ b/drivers/misc/Kconfig
-@@ -13,6 +13,48 @@
-
- if MISC_DEVICES
-
-+config ATMEL_PWM
-+ tristate "Atmel AT32/AT91 PWM support"
-+ depends on AVR32 || ARCH_AT91
-+ help
-+ This option enables device driver support for the PWM channels
-+ on certain Atmel prcoessors. Pulse Width Modulation is used for
-+ purposes including software controlled power-efficent backlights
-+ on LCD displays, motor control, and waveform generation.
+
-+config ATMEL_TCLIB
-+ bool "Atmel AT32/AT91 Timer/Counter Library"
-+ depends on (AVR32 || ARCH_AT91)
-+ help
-+ Select this if you want a library to allocate the Timer/Counter
-+ blocks found on many Atmel processors. This facilitates using
-+ these blocks by different drivers despite processor differences.
++static int __init ubifs_init(void)
++{
++ int err;
+
-+config ATMEL_TCB_CLKSRC
-+ bool "TC Block Clocksource"
-+ depends on ATMEL_TCLIB && GENERIC_TIME
-+ default y
-+ help
-+ Select this to get a high precision clocksource based on a
-+ TC block with a 5+ MHz base clock rate. Two timer channels
-+ are combined to make a single 32-bit timer.
++ BUILD_BUG_ON(sizeof(struct ubifs_ch) != 24);
++
++ /* Make sure node sizes are 8-byte aligned */
++ BUILD_BUG_ON(UBIFS_CH_SZ & 7);
++ BUILD_BUG_ON(UBIFS_INO_NODE_SZ & 7);
++ BUILD_BUG_ON(UBIFS_DENT_NODE_SZ & 7);
++ BUILD_BUG_ON(UBIFS_XENT_NODE_SZ & 7);
++ BUILD_BUG_ON(UBIFS_DATA_NODE_SZ & 7);
++ BUILD_BUG_ON(UBIFS_TRUN_NODE_SZ & 7);
++ BUILD_BUG_ON(UBIFS_SB_NODE_SZ & 7);
++ BUILD_BUG_ON(UBIFS_MST_NODE_SZ & 7);
++ BUILD_BUG_ON(UBIFS_REF_NODE_SZ & 7);
++ BUILD_BUG_ON(UBIFS_CS_NODE_SZ & 7);
++ BUILD_BUG_ON(UBIFS_ORPH_NODE_SZ & 7);
++
++ BUILD_BUG_ON(UBIFS_MAX_DENT_NODE_SZ & 7);
++ BUILD_BUG_ON(UBIFS_MAX_XENT_NODE_SZ & 7);
++ BUILD_BUG_ON(UBIFS_MAX_DATA_NODE_SZ & 7);
++ BUILD_BUG_ON(UBIFS_MAX_INO_NODE_SZ & 7);
++ BUILD_BUG_ON(UBIFS_MAX_NODE_SZ & 7);
++ BUILD_BUG_ON(MIN_WRITE_SZ & 7);
++
++ /* Check min. node size */
++ BUILD_BUG_ON(UBIFS_INO_NODE_SZ < MIN_WRITE_SZ);
++ BUILD_BUG_ON(UBIFS_DENT_NODE_SZ < MIN_WRITE_SZ);
++ BUILD_BUG_ON(UBIFS_XENT_NODE_SZ < MIN_WRITE_SZ);
++ BUILD_BUG_ON(UBIFS_TRUN_NODE_SZ < MIN_WRITE_SZ);
++
++ BUILD_BUG_ON(UBIFS_MAX_DENT_NODE_SZ > UBIFS_MAX_NODE_SZ);
++ BUILD_BUG_ON(UBIFS_MAX_XENT_NODE_SZ > UBIFS_MAX_NODE_SZ);
++ BUILD_BUG_ON(UBIFS_MAX_DATA_NODE_SZ > UBIFS_MAX_NODE_SZ);
++ BUILD_BUG_ON(UBIFS_MAX_INO_NODE_SZ > UBIFS_MAX_NODE_SZ);
++
++ /* Defined node sizes */
++ BUILD_BUG_ON(UBIFS_SB_NODE_SZ != 4096);
++ BUILD_BUG_ON(UBIFS_MST_NODE_SZ != 512);
++ BUILD_BUG_ON(UBIFS_INO_NODE_SZ != 160);
++ BUILD_BUG_ON(UBIFS_REF_NODE_SZ != 64);
+
-+ When GENERIC_CLOCKEVENTS is defined, the third timer channel
-+ may be used as a clock event device supporting oneshot mode
-+ (delays of up to two seconds) based on the 32 KiHz clock.
++ /*
++ * We require that PAGE_CACHE_SIZE is greater-than-or-equal-to
++ * UBIFS_BLOCK_SIZE. It is assumed that both are powers of 2.
++ */
++ if (PAGE_CACHE_SIZE < UBIFS_BLOCK_SIZE) {
++ ubifs_err("VFS page cache size is %u bytes, but UBIFS requires"
++ " at least 4096 bytes",
++ (unsigned int)PAGE_CACHE_SIZE);
++ return -EINVAL;
++ }
+
-+config ATMEL_TCB_CLKSRC_BLOCK
-+ int
-+ depends on ATMEL_TCB_CLKSRC
-+ prompt "TC Block" if ARCH_AT91RM9200 || ARCH_AT91SAM9260 || CPU_AT32AP700X
-+ default 0
-+ range 0 1
-+ help
-+ Some chips provide more than one TC block, so you have the
-+ choice of which one to use for the clock framework. The other
-+ TC can be used for other purposes, such as PWM generation and
-+ interval timing.
++ err = bdi_init(&ubifs_backing_dev_info);
++ if (err)
++ return err;
+
- config IBM_ASM
- tristate "Device driver for IBM RSA service processor"
- depends on X86 && PCI && INPUT && EXPERIMENTAL
---- a/drivers/misc/Makefile
-+++ b/drivers/misc/Makefile
-@@ -7,7 +7,9 @@
- obj-$(CONFIG_HDPU_FEATURES) += hdpuftrs/
- obj-$(CONFIG_MSI_LAPTOP) += msi-laptop.o
- obj-$(CONFIG_ASUS_LAPTOP) += asus-laptop.o
-+obj-$(CONFIG_ATMEL_PWM) += atmel_pwm.o
- obj-$(CONFIG_ATMEL_SSC) += atmel-ssc.o
-+obj-$(CONFIG_ATMEL_TCLIB) += atmel_tclib.o
- obj-$(CONFIG_LKDTM) += lkdtm.o
- obj-$(CONFIG_TIFM_CORE) += tifm_core.o
- obj-$(CONFIG_TIFM_7XX1) += tifm_7xx1.o
---- /dev/null
-+++ b/drivers/mmc/host/atmel-mci.c
-@@ -0,0 +1,1220 @@
++ err = register_filesystem(&ubifs_fs_type);
++ if (err) {
++ ubifs_err("cannot register file system, error %d", err);
++ goto out;
++ }
++
++ err = -ENOMEM;
++ ubifs_inode_slab = kmem_cache_create("ubifs_inode_slab",
++ sizeof(struct ubifs_inode), 0,
++ SLAB_MEM_SPREAD | SLAB_RECLAIM_ACCOUNT,
++ &inode_slab_ctor);
++ if (!ubifs_inode_slab)
++ goto out_reg;
++
++ register_shrinker(&ubifs_shrinker_info);
++
++ err = ubifs_compressors_init();
++ if (err)
++ goto out_compr;
++
++ return 0;
++
++out_compr:
++ unregister_shrinker(&ubifs_shrinker_info);
++ kmem_cache_destroy(ubifs_inode_slab);
++out_reg:
++ unregister_filesystem(&ubifs_fs_type);
++out:
++ bdi_destroy(&ubifs_backing_dev_info);
++ return err;
++}
++/* late_initcall to let compressors initialize first */
++late_initcall(ubifs_init);
++
++static void __exit ubifs_exit(void)
++{
++ ubifs_assert(list_empty(&ubifs_infos));
++ ubifs_assert(atomic_long_read(&ubifs_clean_zn_cnt) == 0);
++
++ ubifs_compressors_exit();
++ unregister_shrinker(&ubifs_shrinker_info);
++ kmem_cache_destroy(ubifs_inode_slab);
++ unregister_filesystem(&ubifs_fs_type);
++ bdi_destroy(&ubifs_backing_dev_info);
++}
++module_exit(ubifs_exit);
++
++MODULE_LICENSE("GPL");
++MODULE_VERSION(__stringify(UBIFS_VERSION));
++MODULE_AUTHOR("Artem Bityutskiy, Adrian Hunter");
++MODULE_DESCRIPTION("UBIFS - UBI File System");
+diff --exclude=.git -urN linux-2.6.25.6/fs/ubifs/tnc.c avr32-2.6/fs/ubifs/tnc.c
+--- linux-2.6.25.6/fs/ubifs/tnc.c 1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/fs/ubifs/tnc.c 2008-06-12 15:09:45.600758286 +0200
+@@ -0,0 +1,2961 @@
+/*
-+ * Atmel MultiMedia Card Interface driver
++ * This file is part of UBIFS.
+ *
-+ * Copyright (C) 2004-2006 Atmel Corporation
++ * Copyright (C) 2006-2008 Nokia Corporation.
+ *
-+ * This program is free software; you can redistribute it and/or modify
-+ * it under the terms of the GNU General Public License version 2 as
-+ * published by the Free Software Foundation.
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published by
++ * the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but WITHOUT
++ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
++ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
++ * more details.
++ *
++ * You should have received a copy of the GNU General Public License along with
++ * this program; if not, write to the Free Software Foundation, Inc., 51
++ * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
++ *
++ * Authors: Adrian Hunter
++ * Artem Bityutskiy (Битюцкий Артём)
+ */
-+#include <linux/blkdev.h>
-+#include <linux/clk.h>
-+#include <linux/device.h>
-+#include <linux/dma-mapping.h>
-+#include <linux/init.h>
-+#include <linux/interrupt.h>
-+#include <linux/ioport.h>
-+#include <linux/module.h>
-+#include <linux/platform_device.h>
-+
-+#include <linux/mmc/host.h>
-+
-+#include <asm/dma-controller.h>
-+#include <asm/io.h>
-+#include <asm/arch/board.h>
-+#include <asm/arch/gpio.h>
-+
-+#include "atmel-mci.h"
+
-+#define DRIVER_NAME "atmel_mci"
++/*
++ * This file implements TNC (Tree Node Cache) which caches indexing nodes of
++ * the UBIFS B-tree.
++ *
++ * At the moment the locking rules of the TNC tree are quite simple and
++ * straightforward. We just have a mutex and lock it when we traverse the
++ * tree. If a znode is not in memory, we read it from flash while still having
++ * the mutex locked.
++ */
+
-+#define MCI_DATA_ERROR_FLAGS (MCI_BIT(DCRCE) | MCI_BIT(DTOE) | \
-+ MCI_BIT(OVRE) | MCI_BIT(UNRE))
++#include <linux/crc32.h>
++#include "ubifs.h"
+
++/*
++ * Returned codes of 'matches_name()' and 'fallible_matches_name()' functions.
++ * @NAME_LESS: name corresponding to the first argument is less than second
++ * @NAME_MATCHES: names match
++ * @NAME_GREATER: name corresponding to the second argument is greater than
++ * first
++ * @NOT_ON_MEDIA: node referred by zbranch does not exist on the media
++ *
++ * These constants were introduce to improve readability.
++ */
+enum {
-+ EVENT_CMD_COMPLETE = 0,
-+ EVENT_DATA_COMPLETE,
-+ EVENT_DATA_ERROR,
-+ EVENT_STOP_SENT,
-+ EVENT_STOP_COMPLETE,
-+ EVENT_DMA_COMPLETE,
-+ EVENT_DMA_ERROR,
++ NAME_LESS = 0,
++ NAME_MATCHES = 1,
++ NAME_GREATER = 2,
++ NOT_ON_MEDIA = 3,
+};
+
-+struct atmel_mci_dma {
-+ struct dma_request_sg req;
-+ unsigned short rx_periph_id;
-+ unsigned short tx_periph_id;
-+};
++/**
++ * insert_old_idx - record an index node obsoleted since the last commit start.
++ * @c: UBIFS file-system description object
++ * @lnum: LEB number of obsoleted index node
++ * @offs: offset of obsoleted index node
++ *
++ * Returns %0 on success, and a negative error code on failure.
++ *
++ * For recovery, there must always be a complete intact version of the index on
++ * flash at all times. That is called the "old index". It is the index as at the
++ * time of the last successful commit. Many of the index nodes in the old index
++ * may be dirty, but they must not be erased until the next successful commit
++ * (at which point that index becomes the old index).
++ *
++ * That means that the garbage collection and the in-the-gaps method of
++ * committing must be able to determine if an index node is in the old index.
++ * Most of the old index nodes can be found by looking up the TNC using the
++ * 'lookup_znode()' function. However, some of the old index nodes may have
++ * been deleted from the current index or may have been changed so much that
++ * they cannot be easily found. In those cases, an entry is added to an RB-tree.
++ * That is what this function does. The RB-tree is ordered by LEB number and
++ * offset because they uniquely identify the old index node.
++ */
++static int insert_old_idx(struct ubifs_info *c, int lnum, int offs)
++{
++ struct ubifs_old_idx *old_idx, *o;
++ struct rb_node **p, *parent = NULL;
+
-+struct atmel_mci {
-+ struct mmc_host *mmc;
-+ void __iomem *regs;
-+ struct atmel_mci_dma dma;
++ old_idx = kmalloc(sizeof(struct ubifs_old_idx), GFP_NOFS);
++ if (unlikely(!old_idx))
++ return -ENOMEM;
++ old_idx->lnum = lnum;
++ old_idx->offs = offs;
++
++ p = &c->old_idx.rb_node;
++ while (*p) {
++ parent = *p;
++ o = rb_entry(parent, struct ubifs_old_idx, rb);
++ if (lnum < o->lnum)
++ p = &(*p)->rb_left;
++ else if (lnum > o->lnum)
++ p = &(*p)->rb_right;
++ else if (offs < o->offs)
++ p = &(*p)->rb_left;
++ else if (offs > o->offs)
++ p = &(*p)->rb_right;
++ else {
++ ubifs_err("old idx added twice!");
++ kfree(old_idx);
++ return 0;
++ }
++ }
++ rb_link_node(&old_idx->rb, parent, p);
++ rb_insert_color(&old_idx->rb, &c->old_idx);
++ return 0;
++}
+
-+ struct mmc_request *mrq;
-+ struct mmc_command *cmd;
-+ struct mmc_data *data;
++/**
++ * insert_old_idx_znode - record a znode obsoleted since last commit start.
++ * @c: UBIFS file-system description object
++ * @znode: znode of obsoleted index node
++ *
++ * Returns %0 on success, and a negative error code on failure.
++ */
++int insert_old_idx_znode(struct ubifs_info *c, struct ubifs_znode *znode)
++{
++ if (znode->parent) {
++ struct ubifs_zbranch *zbr;
++
++ zbr = &znode->parent->zbranch[znode->iip];
++ if (zbr->len)
++ return insert_old_idx(c, zbr->lnum, zbr->offs);
++ } else
++ if (c->zroot.len)
++ return insert_old_idx(c, c->zroot.lnum,
++ c->zroot.offs);
++ return 0;
++}
++
++/**
++ * ins_clr_old_idx_znode - record a znode obsoleted since last commit start.
++ * @c: UBIFS file-system description object
++ * @znode: znode of obsoleted index node
++ *
++ * Returns %0 on success, and a negative error code on failure.
++ */
++static int ins_clr_old_idx_znode(struct ubifs_info *c,
++ struct ubifs_znode *znode)
++{
++ int err;
+
-+ u32 cmd_status;
-+ u32 data_status;
-+ u32 stop_status;
-+ u32 stop_cmdr;
++ if (znode->parent) {
++ struct ubifs_zbranch *zbr;
++
++ zbr = &znode->parent->zbranch[znode->iip];
++ if (zbr->len) {
++ err = insert_old_idx(c, zbr->lnum, zbr->offs);
++ if (err)
++ return err;
++ zbr->lnum = 0;
++ zbr->offs = 0;
++ zbr->len = 0;
++ }
++ } else
++ if (c->zroot.len) {
++ err = insert_old_idx(c, c->zroot.lnum, c->zroot.offs);
++ if (err)
++ return err;
++ c->zroot.lnum = 0;
++ c->zroot.offs = 0;
++ c->zroot.len = 0;
++ }
++ return 0;
++}
+
-+ struct tasklet_struct tasklet;
-+ unsigned long pending_events;
-+ unsigned long completed_events;
++/**
++ * destroy_old_idx - destroy the old_idx RB-tree.
++ * @c: UBIFS file-system description object
++ *
++ * During start commit, the old_idx RB-tree is used to avoid overwriting index
++ * nodes that were in the index last commit but have since been deleted. This
++ * is necessary for recovery i.e. the old index must be kept intact until the
++ * new index is successfully written. The old-idx RB-tree is used for the
++ * in-the-gaps method of writing index nodes and is destroyed every commit.
++ */
++void destroy_old_idx(struct ubifs_info *c)
++{
++ struct rb_node *this = c->old_idx.rb_node;
++ struct ubifs_old_idx *old_idx;
+
-+ int present;
-+ int detect_pin;
-+ int wp_pin;
++ while (this) {
++ if (this->rb_left) {
++ this = this->rb_left;
++ continue;
++ } else if (this->rb_right) {
++ this = this->rb_right;
++ continue;
++ }
++ old_idx = rb_entry(this, struct ubifs_old_idx, rb);
++ this = rb_parent(this);
++ if (this) {
++ if (this->rb_left == &old_idx->rb)
++ this->rb_left = NULL;
++ else
++ this->rb_right = NULL;
++ }
++ kfree(old_idx);
++ }
++ c->old_idx = RB_ROOT;
++}
+
-+ /* For detect pin debouncing */
-+ struct timer_list detect_timer;
++/**
++ * copy_znode - copy a dirty znode.
++ * @c: UBIFS file-system description object
++ * @znode: znode to copy
++ *
++ * A dirty znode being committed may not be changed, so it is copied.
++ */
++static struct ubifs_znode *copy_znode(struct ubifs_info *c,
++ struct ubifs_znode *znode)
++{
++ struct ubifs_znode *zn;
+
-+ unsigned long bus_hz;
-+ unsigned long mapbase;
-+ struct clk *mck;
-+ struct platform_device *pdev;
++ zn = kmalloc(c->max_znode_sz, GFP_NOFS);
++ if (unlikely(!zn))
++ return ERR_PTR(-ENOMEM);
+
-+#ifdef CONFIG_DEBUG_FS
-+ struct dentry *debugfs_root;
-+ struct dentry *debugfs_regs;
-+ struct dentry *debugfs_req;
-+ struct dentry *debugfs_pending_events;
-+ struct dentry *debugfs_completed_events;
-+#endif
-+};
++ memcpy(zn, znode, c->max_znode_sz);
++ zn->cnext = NULL;
++ __set_bit(DIRTY_ZNODE, &zn->flags);
++ __clear_bit(COW_ZNODE, &zn->flags);
+
-+/* Those printks take an awful lot of time... */
-+#ifndef DEBUG
-+static unsigned int fmax = 15000000U;
-+#else
-+static unsigned int fmax = 1000000U;
-+#endif
-+module_param(fmax, uint, 0444);
-+MODULE_PARM_DESC(fmax, "Max frequency in Hz of the MMC bus clock");
++ ubifs_assert(!test_bit(OBSOLETE_ZNODE, &znode->flags));
++ __set_bit(OBSOLETE_ZNODE, &znode->flags);
+
-+/* Test bit macros for completed events */
-+#define mci_cmd_is_complete(host) \
-+ test_bit(EVENT_CMD_COMPLETE, &host->completed_events)
-+#define mci_data_is_complete(host) \
-+ test_bit(EVENT_DATA_COMPLETE, &host->completed_events)
-+#define mci_data_error_is_complete(host) \
-+ test_bit(EVENT_DATA_ERROR, &host->completed_events)
-+#define mci_stop_sent_is_complete(host) \
-+ test_bit(EVENT_STOP_SENT, &host->completed_events)
-+#define mci_stop_is_complete(host) \
-+ test_bit(EVENT_STOP_COMPLETE, &host->completed_events)
-+#define mci_dma_is_complete(host) \
-+ test_bit(EVENT_DMA_COMPLETE, &host->completed_events)
-+#define mci_dma_error_is_complete(host) \
-+ test_bit(EVENT_DMA_ERROR, &host->completed_events)
++ if (znode->level != 0) {
++ int i;
++ const int n = zn->child_cnt;
+
-+/* Test and clear bit macros for pending events */
-+#define mci_clear_cmd_is_pending(host) \
-+ test_and_clear_bit(EVENT_CMD_COMPLETE, &host->pending_events)
-+#define mci_clear_data_is_pending(host) \
-+ test_and_clear_bit(EVENT_DATA_COMPLETE, &host->pending_events)
-+#define mci_clear_data_error_is_pending(host) \
-+ test_and_clear_bit(EVENT_DATA_ERROR, &host->pending_events)
-+#define mci_clear_stop_sent_is_pending(host) \
-+ test_and_clear_bit(EVENT_STOP_SENT, &host->pending_events)
-+#define mci_clear_stop_is_pending(host) \
-+ test_and_clear_bit(EVENT_STOP_COMPLETE, &host->pending_events)
-+#define mci_clear_dma_error_is_pending(host) \
-+ test_and_clear_bit(EVENT_DMA_ERROR, &host->pending_events)
++ /* The children now have new parent */
++ for (i = 0; i < n; i++) {
++ struct ubifs_zbranch *zbr = &zn->zbranch[i];
+
-+/* Test and set bit macros for completed events */
-+#define mci_set_cmd_is_completed(host) \
-+ test_and_set_bit(EVENT_CMD_COMPLETE, &host->completed_events)
-+#define mci_set_data_is_completed(host) \
-+ test_and_set_bit(EVENT_DATA_COMPLETE, &host->completed_events)
-+#define mci_set_data_error_is_completed(host) \
-+ test_and_set_bit(EVENT_DATA_ERROR, &host->completed_events)
-+#define mci_set_stop_sent_is_completed(host) \
-+ test_and_set_bit(EVENT_STOP_SENT, &host->completed_events)
-+#define mci_set_stop_is_completed(host) \
-+ test_and_set_bit(EVENT_STOP_COMPLETE, &host->completed_events)
-+#define mci_set_dma_error_is_completed(host) \
-+ test_and_set_bit(EVENT_DMA_ERROR, &host->completed_events)
++ if (zbr->znode)
++ zbr->znode->parent = zn;
++ }
++ }
+
-+/* Set bit macros for completed events */
-+#define mci_set_cmd_complete(host) \
-+ set_bit(EVENT_CMD_COMPLETE, &host->completed_events)
-+#define mci_set_data_complete(host) \
-+ set_bit(EVENT_DATA_COMPLETE, &host->completed_events)
-+#define mci_set_data_error_complete(host) \
-+ set_bit(EVENT_DATA_ERROR, &host->completed_events)
-+#define mci_set_stop_sent_complete(host) \
-+ set_bit(EVENT_STOP_SENT, &host->completed_events)
-+#define mci_set_stop_complete(host) \
-+ set_bit(EVENT_STOP_COMPLETE, &host->completed_events)
-+#define mci_set_dma_complete(host) \
-+ set_bit(EVENT_DMA_COMPLETE, &host->completed_events)
-+#define mci_set_dma_error_complete(host) \
-+ set_bit(EVENT_DMA_ERROR, &host->completed_events)
++ atomic_long_inc(&c->dirty_zn_cnt);
++ return zn;
++}
+
-+/* Set bit macros for pending events */
-+#define mci_set_cmd_pending(host) \
-+ set_bit(EVENT_CMD_COMPLETE, &host->pending_events)
-+#define mci_set_data_pending(host) \
-+ set_bit(EVENT_DATA_COMPLETE, &host->pending_events)
-+#define mci_set_data_error_pending(host) \
-+ set_bit(EVENT_DATA_ERROR, &host->pending_events)
-+#define mci_set_stop_sent_pending(host) \
-+ set_bit(EVENT_STOP_SENT, &host->pending_events)
-+#define mci_set_stop_pending(host) \
-+ set_bit(EVENT_STOP_COMPLETE, &host->pending_events)
-+#define mci_set_dma_error_pending(host) \
-+ set_bit(EVENT_DMA_ERROR, &host->pending_events)
++/**
++ * add_idx_dirt - add dirt due to a dirty znode.
++ * @c: UBIFS file-system description object
++ * @lnum: LEB number of index node
++ * @dirt: size of index node
++ *
++ * This function updates lprops dirty space and the new size of the index.
++ */
++static int add_idx_dirt(struct ubifs_info *c, int lnum, int dirt)
++{
++ c->calc_idx_sz -= ALIGN(dirt, 8);
++ return ubifs_add_dirt(c, lnum, dirt);
++}
+
-+/* Clear bit macros for pending events */
-+#define mci_clear_cmd_pending(host) \
-+ clear_bit(EVENT_CMD_COMPLETE, &host->pending_events)
-+#define mci_clear_data_pending(host) \
-+ clear_bit(EVENT_DATA_COMPLETE, &host->pending_events)
-+#define mci_clear_data_error_pending(host) \
-+ clear_bit(EVENT_DATA_ERROR, &host->pending_events)
-+#define mci_clear_stop_sent_pending(host) \
-+ clear_bit(EVENT_STOP_SENT, &host->pending_events)
-+#define mci_clear_stop_pending(host) \
-+ clear_bit(EVENT_STOP_COMPLETE, &host->pending_events)
-+#define mci_clear_dma_error_pending(host) \
-+ clear_bit(EVENT_DMA_ERROR, &host->pending_events)
++/**
++ * dirty_cow_znode - ensure a znode is not being committed.
++ * @c: UBIFS file-system description object
++ * @zbr: branch of znode to check
++ *
++ * Returns dirtied znode on success or negative error code on failure.
++ */
++static struct ubifs_znode *dirty_cow_znode(struct ubifs_info *c,
++ struct ubifs_zbranch *zbr)
++{
++ struct ubifs_znode *znode = zbr->znode;
++ struct ubifs_znode *zn;
++ int err;
+
++ if (!test_bit(COW_ZNODE, &znode->flags)) {
++ /* znode is not being committed */
++ if (!test_and_set_bit(DIRTY_ZNODE, &znode->flags)) {
++ atomic_long_inc(&c->dirty_zn_cnt);
++ atomic_long_dec(&c->clean_zn_cnt);
++ atomic_long_dec(&ubifs_clean_zn_cnt);
++ err = add_idx_dirt(c, zbr->lnum, zbr->len);
++ if (unlikely(err))
++ return ERR_PTR(err);
++ }
++ return znode;
++ }
+
-+#ifdef CONFIG_DEBUG_FS
-+#include <linux/debugfs.h>
++ zn = copy_znode(c, znode);
++ if (unlikely(IS_ERR(zn)))
++ return zn;
+
-+#define DBG_REQ_BUF_SIZE (4096 - sizeof(unsigned int))
++ if (zbr->len) {
++ err = insert_old_idx(c, zbr->lnum, zbr->offs);
++ if (unlikely(err))
++ return ERR_PTR(err);
++ err = add_idx_dirt(c, zbr->lnum, zbr->len);
++ } else
++ err = 0;
+
-+struct req_dbg_data {
-+ unsigned int nbytes;
-+ char str[DBG_REQ_BUF_SIZE];
-+};
++ zbr->znode = zn;
++ zbr->lnum = 0;
++ zbr->offs = 0;
++ zbr->len = 0;
+
-+static int req_dbg_open(struct inode *inode, struct file *file)
-+{
-+ struct atmel_mci *host;
-+ struct mmc_request *mrq;
-+ struct mmc_command *cmd, *stop;
-+ struct mmc_data *data;
-+ struct req_dbg_data *priv;
-+ char *str;
-+ unsigned long n = 0;
++ if (unlikely(err))
++ return ERR_PTR(err);
++ return zn;
++}
+
-+ priv = kzalloc(DBG_REQ_BUF_SIZE, GFP_KERNEL);
-+ if (!priv)
-+ return -ENOMEM;
-+ str = priv->str;
++/**
++ * lnc_add - add a leaf node to the leaf node cache.
++ * @c: UBIFS file-system description object
++ * @zbr: zbranch of leaf node
++ * @node: leaf node
++ *
++ * Leaf nodes are non-index nodes directory entry nodes or data nodes. The
++ * purpose of the leaf node cache is to save re-reading the same leaf node over
++ * and over again. Most things are cached by VFS, however the file system must
++ * cache directory entries for readdir and for resolving hash collisions. The
++ * present implementation of the leaf node cache is extremely simple, and
++ * allows for error returns that are not used but that may be needed if a more
++ * complex implementation is created.
++ *
++ * Note, this function does not add the @node object to LNC directly, but
++ * allocates a copy of the object and adds the copy to LNC. The reason for this
++ * is that @node has been allocated outside of the TNC subsystem and will be
++ * used with @c->tnc_mutex unlock upon return from the TNC subsystem. But LNC
++ * may be changed at any time, e.g. freed by the shrinker.
++ */
++static int lnc_add(struct ubifs_info *c, struct ubifs_zbranch *zbr,
++ const void *node)
++{
++ int err;
++ void *lnc_node;
++ const struct ubifs_dent_node *dent = node;
+
-+ mutex_lock(&inode->i_mutex);
-+ host = inode->i_private;
++ ubifs_assert(!zbr->leaf);
++ ubifs_assert(zbr->len != 0);
++ ubifs_assert(is_hash_key(c, &zbr->key));
+
-+ spin_lock_irq(&host->mmc->lock);
-+ mrq = host->mrq;
-+ if (mrq) {
-+ cmd = mrq->cmd;
-+ data = mrq->data;
-+ stop = mrq->stop;
-+ n = snprintf(str, DBG_REQ_BUF_SIZE,
-+ "CMD%u(0x%x) %x %x %x %x %x (err %u)\n",
-+ cmd->opcode, cmd->arg, cmd->flags,
-+ cmd->resp[0], cmd->resp[1], cmd->resp[2],
-+ cmd->resp[3], cmd->error);
-+ if (n < DBG_REQ_BUF_SIZE && data)
-+ n += snprintf(str + n, DBG_REQ_BUF_SIZE - n,
-+ "DATA %u * %u (%u) %x (err %u)\n",
-+ data->blocks, data->blksz,
-+ data->bytes_xfered, data->flags,
-+ data->error);
-+ if (n < DBG_REQ_BUF_SIZE && stop)
-+ n += snprintf(str + n, DBG_REQ_BUF_SIZE - n,
-+ "CMD%u(0x%x) %x %x %x %x %x (err %u)\n",
-+ stop->opcode, stop->arg, stop->flags,
-+ stop->resp[0], stop->resp[1],
-+ stop->resp[2], stop->resp[3],
-+ stop->error);
++ err = ubifs_validate_entry(c, dent);
++ if (err) {
++ dbg_dump_stack();
++ dbg_dump_node(c, dent);
++ return err;
+ }
-+ spin_unlock_irq(&host->mmc->lock);
-+ mutex_unlock(&inode->i_mutex);
+
-+ priv->nbytes = min(n, DBG_REQ_BUF_SIZE);
-+ file->private_data = priv;
++ lnc_node = kmalloc(zbr->len, GFP_NOFS);
++ if (!lnc_node)
++ /* We don't have to have the cache, so no error */
++ return 0;
+
++ memcpy(lnc_node, node, zbr->len);
++ zbr->leaf = lnc_node;
+ return 0;
+}
+
-+static ssize_t req_dbg_read(struct file *file, char __user *buf,
-+ size_t nbytes, loff_t *ppos)
++ /**
++ * lnc_add_directly - add a leaf node to the leaf-node-cache.
++ * @c: UBIFS file-system description object
++ * @zbr: zbranch of leaf node
++ * @node: leaf node
++ *
++ * This function is similar to 'lnc_add()', but it does not create a copy of
++ * @node but inserts @node to TNC directly.
++ */
++static int lnc_add_directly(struct ubifs_info *c, struct ubifs_zbranch *zbr,
++ void *node)
+{
-+ struct req_dbg_data *priv = file->private_data;
++ int err;
+
-+ return simple_read_from_buffer(buf, nbytes, ppos,
-+ priv->str, priv->nbytes);
++ ubifs_assert(!zbr->leaf);
++ ubifs_assert(zbr->len != 0);
++
++ err = ubifs_validate_entry(c, node);
++ if (err) {
++ dbg_dump_stack();
++ dbg_dump_node(c, node);
++ return err;
++ }
++
++ zbr->leaf = node;
++ return 0;
+}
+
-+static int req_dbg_release(struct inode *inode, struct file *file)
++/**
++ * lnc_free - remove a leaf node from the leaf node cache.
++ * @zbr: zbranch of leaf node
++ * @node: leaf node
++ */
++static void lnc_free(struct ubifs_zbranch *zbr)
+{
-+ kfree(file->private_data);
-+ return 0;
++ if (!zbr->leaf)
++ return;
++ kfree(zbr->leaf);
++ zbr->leaf = NULL;
+}
+
-+static const struct file_operations req_dbg_fops = {
-+ .owner = THIS_MODULE,
-+ .open = req_dbg_open,
-+ .llseek = no_llseek,
-+ .read = req_dbg_read,
-+ .release = req_dbg_release,
-+};
++/**
++ * tnc_read_node_nm - read a "hashed" leaf node.
++ * @c: UBIFS file-system description object
++ * @zbr: key and position of the node
++ * @node: node is returned here
++ *
++ * This function reads a "hashed" node defined by @zbr from the leaf node cache
++ * (in it is there) or from the hash media, in which case the node is also
++ * added to LNC. Returns zero in case of success or a negative negative error
++ * code in case of failure.
++ */
++static int tnc_read_node_nm(struct ubifs_info *c, struct ubifs_zbranch *zbr,
++ void *node)
++{
++ int err;
+
-+static int regs_dbg_open(struct inode *inode, struct file *file)
++ ubifs_assert(is_hash_key(c, &zbr->key));
++
++ if (zbr->leaf) {
++ /* Read from the leaf node cache */
++ ubifs_assert(zbr->len != 0);
++ memcpy(node, zbr->leaf, zbr->len);
++ return 0;
++ }
++
++ err = ubifs_tnc_read_node(c, zbr, node);
++ if (err)
++ return err;
++
++ /* Add the node to the leaf node cache */
++ err = lnc_add(c, zbr, node);
++ return err;
++}
++
++/**
++ * try_read_node - read a node if it is a node.
++ * @c: UBIFS file-system description object
++ * @buf: buffer to read to
++ * @type: node type
++ * @len: node length (not aligned)
++ * @lnum: LEB number of node to read
++ * @offs: offset of node to read
++ *
++ * This function tries to read a node of known type and length, checks it and
++ * stores it in @buf. This function returns %1 if a node is present and %0 if
++ * a node is not present. A negative error code is returned for I/O errors.
++ * This function performs that same function as ubifs_read_node except that
++ * it does not require that there is actually a node present and instead
++ * the return code indicates if a node was read.
++ */
++static int try_read_node(const struct ubifs_info *c, void *buf, int type,
++ int len, int lnum, int offs)
+{
-+ struct atmel_mci *host;
-+ unsigned int i;
-+ u32 *data;
-+ int ret = -ENOMEM;
++ int err, node_len;
++ struct ubifs_ch *ch = buf;
++ uint32_t crc, node_crc;
+
-+ mutex_lock(&inode->i_mutex);
-+ host = inode->i_private;
-+ data = kmalloc(inode->i_size, GFP_KERNEL);
-+ if (!data)
-+ goto out;
++ dbg_io("LEB %d:%d, %s, length %d", lnum, offs, dbg_ntype(type), len);
+
-+ spin_lock_irq(&host->mmc->lock);
-+ for (i = 0; i < inode->i_size / 4; i++)
-+ data[i] = __raw_readl(host->regs + i * 4);
-+ spin_unlock_irq(&host->mmc->lock);
++ err = ubi_read(c->ubi, lnum, buf, offs, len);
++ if (err) {
++ ubifs_err("cannot read node type %d from LEB %d:%d, error %d",
++ type, lnum, offs, err);
++ return err;
++ }
+
-+ file->private_data = data;
-+ ret = 0;
++ if (le32_to_cpu(ch->magic) != UBIFS_NODE_MAGIC)
++ return 0;
+
-+out:
-+ mutex_unlock(&inode->i_mutex);
++ if (ch->node_type != type)
++ return 0;
+
-+ return ret;
++ node_len = le32_to_cpu(ch->len);
++ if (node_len != len)
++ return 0;
++
++ crc = crc32(UBIFS_CRC32_INIT, buf + 8, node_len - 8);
++ node_crc = le32_to_cpu(ch->crc);
++ if (crc != node_crc)
++ return 0;
++
++ return 1;
+}
+
-+static ssize_t regs_dbg_read(struct file *file, char __user *buf,
-+ size_t nbytes, loff_t *ppos)
++/**
++ * fallible_read_node - try to read a leaf node.
++ * @c: UBIFS file-system description object
++ * @key: key of node to read
++ * @zbr: position of node
++ * @node: node returned
++ *
++ * This function tries to read a node and returns %1 if the node is read, %0
++ * if the node is not present, and a negative error code in the case of error.
++ */
++static int fallible_read_node(struct ubifs_info *c, const union ubifs_key *key,
++ struct ubifs_zbranch *zbr, void *node)
+{
-+ struct inode *inode = file->f_dentry->d_inode;
+ int ret;
+
-+ mutex_lock(&inode->i_mutex);
-+ ret = simple_read_from_buffer(buf, nbytes, ppos,
-+ file->private_data,
-+ file->f_dentry->d_inode->i_size);
-+ mutex_unlock(&inode->i_mutex);
++ dbg_tnc("LEB %d:%d, key %s", zbr->lnum, zbr->offs, DBGKEY(key));
++
++ ret = try_read_node(c, node, key_type(c, key), zbr->len, zbr->lnum,
++ zbr->offs);
++ if (ret == 1) {
++ union ubifs_key node_key;
++ struct ubifs_dent_node *dent = node;
+
++ /* All nodes have key in the same place */
++ key_read(c, &dent->key, &node_key);
++ if (keys_cmp(c, key, &node_key) != 0)
++ ret = 0;
++ }
++ if (ret == 0)
++ dbg_mnt("dangling branch LEB %d:%d len %d, key %s",
++ zbr->lnum, zbr->offs, zbr->len, DBGKEY(key));
+ return ret;
+}
+
-+static int regs_dbg_release(struct inode *inode, struct file *file)
-+{
-+ kfree(file->private_data);
-+ return 0;
++/**
++ * matches_name - determine if a directory or extended attribute entry matches
++ * a given name.
++ * @c: UBIFS file-system description object
++ * @zbr: zbranch of dent
++ * @nm: name to match
++ *
++ * This function checks if xentry/direntry referred by zbranch @zbr matches name
++ * @nm. Returns %NAME_MATCHES if it does, %NAME_LESS if the name referred by
++ * @zbr is less than @nm, and %NAME_GREATER if it is greater than @nm. In case
++ * of failure, a negative error code is returned.
++ */
++static int matches_name(struct ubifs_info *c, struct ubifs_zbranch *zbr,
++ const struct qstr *nm)
++{
++ struct ubifs_dent_node *dent;
++ int nlen, err;
++
++ /* If possible, match against the dent in the leaf node cache */
++ if (!zbr->leaf) {
++ dent = kmalloc(zbr->len, GFP_NOFS);
++ if (!dent)
++ return -ENOMEM;
++
++ err = ubifs_tnc_read_node(c, zbr, dent);
++ if (err)
++ goto out_free;
++
++ /* Add the node to the leaf node cache */
++ err = lnc_add_directly(c, zbr, dent);
++ if (err)
++ goto out_free;
++ } else
++ dent = zbr->leaf;
++
++ nlen = le16_to_cpu(dent->nlen);
++ err = memcmp(dent->name, nm->name, min_t(int, nlen, nm->len));
++ if (err == 0) {
++ if (nlen == nm->len)
++ return NAME_MATCHES;
++ else if (nlen < nm->len)
++ return NAME_LESS;
++ else
++ return NAME_GREATER;
++ } else if (err < 0)
++ return NAME_LESS;
++ else
++ return NAME_GREATER;
++
++out_free:
++ kfree(dent);
++ return err;
+}
+
-+static const struct file_operations regs_dbg_fops = {
-+ .owner = THIS_MODULE,
-+ .open = regs_dbg_open,
-+ .llseek = generic_file_llseek,
-+ .read = regs_dbg_read,
-+ .release = regs_dbg_release,
-+};
++/**
++ * get_znode - get a TNC znode that may not be loaded yet.
++ * @c: UBIFS file-system description object
++ * @znode: parent znode
++ * @n: znode branch slot number
++ *
++ * This function returns the znode or a negative error code.
++ */
++static struct ubifs_znode *get_znode(struct ubifs_info *c,
++ struct ubifs_znode *znode, int n)
++{
++ struct ubifs_zbranch *zbr;
+
-+static void atmci_init_debugfs(struct atmel_mci *host)
++ zbr = &znode->zbranch[n];
++ if (zbr->znode)
++ znode = zbr->znode;
++ else
++ znode = ubifs_load_znode(c, zbr, znode, n);
++ return znode;
++}
++
++/**
++ * tnc_next - find next TNC entry.
++ * @c: UBIFS file-system description object
++ * @zn: znode is passed and returned here
++ * @n: znode branch slot number is passed and returned here
++ *
++ * This function returns %0 if the next TNC entry is found, %-ENOENT if there is
++ * no next entry, or a negative error code otherwise.
++ */
++static int tnc_next(struct ubifs_info *c, struct ubifs_znode **zn, int *n)
+{
-+ struct mmc_host *mmc;
-+ struct dentry *root, *regs;
-+ struct resource *res;
++ struct ubifs_znode *znode = *zn;
++ int nn = *n;
+
-+ mmc = host->mmc;
-+ root = debugfs_create_dir(mmc_hostname(mmc), NULL);
-+ if (IS_ERR(root) || !root)
-+ goto err_root;
-+ host->debugfs_root = root;
++ nn += 1;
++ if (nn < znode->child_cnt) {
++ *n = nn;
++ return 0;
++ }
++ while (1) {
++ struct ubifs_znode *zp;
++
++ zp = znode->parent;
++ if (!zp)
++ return -ENOENT;
++ nn = znode->iip + 1;
++ znode = zp;
++ if (nn < znode->child_cnt) {
++ znode = get_znode(c, znode, nn);
++ if (IS_ERR(znode))
++ return PTR_ERR(znode);
++ while (znode->level != 0) {
++ znode = get_znode(c, znode, 0);
++ if (IS_ERR(znode))
++ return PTR_ERR(znode);
++ }
++ nn = 0;
++ break;
++ }
++ }
++ *zn = znode;
++ *n = nn;
++ return 0;
++}
+
-+ regs = debugfs_create_file("regs", 0400, root, host, ®s_dbg_fops);
-+ if (!regs)
-+ goto err_regs;
++/**
++ * tnc_prev - find previous TNC entry.
++ * @c: UBIFS file-system description object
++ * @zn: znode is returned here
++ * @n: znode branch slot number is passed and returned here
++ *
++ * This function returns %0 if the previous TNC entry is found, %-ENOENT if
++ * there is no next entry, or a negative error code otherwise.
++ */
++static int tnc_prev(struct ubifs_info *c, struct ubifs_znode **zn, int *n)
++{
++ struct ubifs_znode *znode = *zn;
++ int nn = *n;
+
-+ res = platform_get_resource(host->pdev, IORESOURCE_MEM, 0);
-+ regs->d_inode->i_size = res->end - res->start + 1;
-+ host->debugfs_regs = regs;
++ if (nn > 0) {
++ *n = nn - 1;
++ return 0;
++ }
++ while (1) {
++ struct ubifs_znode *zp;
++
++ zp = znode->parent;
++ if (!zp)
++ return -ENOENT;
++ nn = znode->iip - 1;
++ znode = zp;
++ if (nn >= 0) {
++ znode = get_znode(c, znode, nn);
++ if (IS_ERR(znode))
++ return PTR_ERR(znode);
++ while (znode->level != 0) {
++ nn = znode->child_cnt - 1;
++ znode = get_znode(c, znode, nn);
++ if (IS_ERR(znode))
++ return PTR_ERR(znode);
++ }
++ nn = znode->child_cnt - 1;
++ break;
++ }
++ }
++ *zn = znode;
++ *n = nn;
++ return 0;
++}
+
-+ host->debugfs_req = debugfs_create_file("req", 0400, root,
-+ host, &req_dbg_fops);
-+ if (!host->debugfs_req)
-+ goto err_req;
++/**
++ * resolve_collision - resolve a collision.
++ * @c: UBIFS file-system description object
++ * @key: key of a directory or extended attribute entry
++ * @zn: znode is returned here
++ * @n: zbranch number is passed and returned here
++ * @nm: name of the entry
++ *
++ * This function is called for "hashed" keys to make sure that the found key
++ * really corresponds to the looked up node (directory or extended attribute
++ * entry). It returns %1 and sets @zn and @n if the collision is resolved.
++ * %0 is returned if @nm is not found and @zn and @n are set to the previous
++ * entry, i.e. to the entry after which @nm could follow if it were in TNC.
++ * This means that @n may be set to %-1 if the leftmost key in @zn is the
++ * previous one. A negative error code is returned on failures.
++ */
++static int resolve_collision(struct ubifs_info *c, const union ubifs_key *key,
++ struct ubifs_znode **zn, int *n,
++ const struct qstr *nm)
++{
++ int err;
+
-+ host->debugfs_pending_events
-+ = debugfs_create_u32("pending_events", 0400, root,
-+ (u32 *)&host->pending_events);
-+ if (!host->debugfs_pending_events)
-+ goto err_pending_events;
++ err = matches_name(c, &(*zn)->zbranch[*n], nm);
++ if (unlikely(err < 0))
++ return err;
++ if (err == NAME_MATCHES)
++ return 1;
++
++ if (err == NAME_GREATER) {
++ /* Look left */
++ while (1) {
++ err = tnc_prev(c, zn, n);
++ if (err == -ENOENT) {
++ ubifs_assert(*n == 0);
++ *n = -1;
++ return 0;
++ }
++ if (err < 0)
++ return err;
++ if (keys_cmp(c, &(*zn)->zbranch[*n].key, key)) {
++ /*
++ * We have found the branch after which we would
++ * like to insert, but inserting in this znode
++ * may still be wrong. Consider the following 3
++ * znodes, in the case where we are resolving a
++ * collision with Key2.
++ *
++ * znode zp
++ * ----------------------
++ * level 1 | Key0 | Key1 |
++ * -----------------------
++ * | |
++ * znode za | | znode zb
++ * ------------ ------------
++ * level 0 | Key0 | | Key2 |
++ * ------------ ------------
++ *
++ * The lookup finds Key2 in znode zb. Lets say
++ * there is no match and the name is greater so
++ * we look left. When we find Key0, we end up
++ * here. If we return now, we will insert into
++ * znode za at slot n = 1. But that is invalid
++ * according to the parent's keys. Key2 must
++ * be inserted into znode zb.
++ *
++ * Note, this problem is not relevant for the
++ * case when we go right, because
++ * 'tnc_insert()' would correct the parent key.
++ */
++ if (*n == (*zn)->child_cnt - 1) {
++ err = tnc_next(c, zn, n);
++ if (err) {
++ /* Should be impossible */
++ ubifs_assert(0);
++ if (err == -ENOENT)
++ err = -EINVAL;
++ return err;
++ }
++ ubifs_assert(*n == 0);
++ *n = -1;
++ }
++ return 0;
++ }
++ err = matches_name(c, &(*zn)->zbranch[*n], nm);
++ if (err < 0)
++ return err;
++ if (err == NAME_LESS)
++ return 0;
++ if (err == NAME_MATCHES)
++ return 1;
++ ubifs_assert(err == NAME_GREATER);
++ }
++ } else {
++ int nn = *n;
++ struct ubifs_znode *znode = *zn;
++
++ /* Look right */
++ while (1) {
++ err = tnc_next(c, &znode, &nn);
++ if (err == -ENOENT)
++ return 0;
++ if (err < 0)
++ return err;
++ if (keys_cmp(c, &znode->zbranch[nn].key, key))
++ return 0;
++ err = matches_name(c, &znode->zbranch[nn], nm);
++ if (err < 0)
++ return err;
++ if (err == NAME_GREATER)
++ return 0;
++ *zn = znode;
++ *n = nn;
++ if (err == NAME_MATCHES)
++ return 1;
++ ubifs_assert(err == NAME_LESS);
++ }
++ }
++}
+
-+ host->debugfs_completed_events
-+ = debugfs_create_u32("completed_events", 0400, root,
-+ (u32 *)&host->completed_events);
-+ if (!host->debugfs_completed_events)
-+ goto err_completed_events;
++/**
++ * fallible_matches_name - determine if a dent matches a given name.
++ * @c: UBIFS file-system description object
++ * @zbr: zbranch of dent
++ * @nm: name to match
++ *
++ * This is a "fallible" version of 'matches_name()' function which does not
++ * panic if the direntry/xentry referred by @zbr does not exist on the media.
++ *
++ * This function checks if xentry/direntry referred by zbranch @zbr matches name
++ * @nm. Returns %NAME_MATCHES it does, %NAME_LESS if the name referred by @zbr
++ * is less than @nm, %NAME_GREATER if it is greater than @nm, and @NOT_ON_MEDIA
++ * if xentry/direntry referred by @zbr does not exist on the media. A negative
++ * error code is returned in case of failure.
++ */
++static int fallible_matches_name(struct ubifs_info *c,
++ struct ubifs_zbranch *zbr,
++ const struct qstr *nm)
++{
++ struct ubifs_dent_node *dent;
++ int nlen, err;
++
++ /* If possible, match against the dent in the leaf node cache */
++ if (!zbr->leaf) {
++ dent = kmalloc(zbr->len, GFP_NOFS);
++ if (!dent)
++ return -ENOMEM;
++
++ err = fallible_read_node(c, &zbr->key, zbr, dent);
++ if (err < 0)
++ goto out_free;
++ if (err == 0) {
++ /* The node was not present */
++ err = NOT_ON_MEDIA;
++ goto out_free;
++ }
++ ubifs_assert(err == 1);
+
-+ return;
++ err = lnc_add_directly(c, zbr, dent);
++ if (err)
++ goto out_free;
++ } else
++ dent = zbr->leaf;
++
++ nlen = le16_to_cpu(dent->nlen);
++ err = memcmp(dent->name, nm->name, min_t(int, nlen, nm->len));
++ if (err == 0) {
++ if (nlen == nm->len)
++ return NAME_MATCHES;
++ else if (nlen < nm->len)
++ return NAME_LESS;
++ else
++ return NAME_GREATER;
++ } else if (err < 0)
++ return NAME_LESS;
++ else
++ return NAME_GREATER;
+
-+err_completed_events:
-+ debugfs_remove(host->debugfs_pending_events);
-+err_pending_events:
-+ debugfs_remove(host->debugfs_req);
-+err_req:
-+ debugfs_remove(host->debugfs_regs);
-+err_regs:
-+ debugfs_remove(host->debugfs_root);
-+err_root:
-+ host->debugfs_root = NULL;
-+ dev_err(&host->pdev->dev,
-+ "failed to initialize debugfs for %s\n",
-+ mmc_hostname(mmc));
++out_free:
++ kfree(dent);
++ return err;
+}
+
-+static void atmci_cleanup_debugfs(struct atmel_mci *host)
-+{
-+ if (host->debugfs_root) {
-+ debugfs_remove(host->debugfs_completed_events);
-+ debugfs_remove(host->debugfs_pending_events);
-+ debugfs_remove(host->debugfs_req);
-+ debugfs_remove(host->debugfs_regs);
-+ debugfs_remove(host->debugfs_root);
-+ host->debugfs_root = NULL;
++/**
++ * fallible_resolve_collision - resolve a collision even if nodes are missing.
++ * @c: UBIFS file-system description object
++ * @key: key
++ * @zn: znode is returned here
++ * @n: branch number is passed and returned here
++ * @nm: name of directory entry
++ * @adding: indicates caller is adding a key to the TNC
++ *
++ * This is a "fallible" version of the 'resolve_collision()' function which
++ * does not panic if one of the nodes referred to by TNC does not exist on the
++ * media. This may happen when replaying the journal if a deleted node was
++ * Garbage-collected and the commit was not done. A branch that refers to a node
++ * that is not present is called a dangling branch. The following are the return
++ * codes for this function:
++ * o if @nm was found, %1 is returned and @zn and @n are set to the found
++ * branch;
++ * o if we are @adding and @nm was not found, %0 is returned;
++ * o if we are not @adding and @nm was not found, but a dangling branch was
++ * found, then %1 is returned and @zn and @n are set to the dangling branch;
++ * o a negative error code is returned in case of failure.
++ */
++static int fallible_resolve_collision(struct ubifs_info *c,
++ const union ubifs_key *key,
++ struct ubifs_znode **zn, int *n,
++ const struct qstr *nm, int adding)
++{
++ struct ubifs_znode *o_znode = NULL, *znode = *zn;
++ int uninitialized_var(o_n), err, cmp, unsure = 0, nn = *n;
++
++ cmp = fallible_matches_name(c, &znode->zbranch[nn], nm);
++ if (unlikely(cmp < 0))
++ return cmp;
++ if (cmp == NAME_MATCHES)
++ return 1;
++ if (cmp == NOT_ON_MEDIA) {
++ o_znode = znode;
++ o_n = nn;
++ /*
++ * We are unlucky and hit a dangling branch straight away.
++ * Now we do not really know where to go to find the needed
++ * branch - to the left or to the right. Well, let's try left.
++ */
++ unsure = 1;
++ } else if (!adding)
++ unsure = 1; /* Remove a dangling branch wherever it is */
++
++ if (cmp == NAME_GREATER || unsure) {
++ /* Look left */
++ while (1) {
++ err = tnc_prev(c, zn, n);
++ if (err == -ENOENT) {
++ ubifs_assert(*n == 0);
++ *n = -1;
++ break;
++ }
++ if (err < 0)
++ return err;
++ if (keys_cmp(c, &(*zn)->zbranch[*n].key, key)) {
++ /* See comments in 'resolve_collision()' */
++ if (*n == (*zn)->child_cnt - 1) {
++ err = tnc_next(c, zn, n);
++ if (err) {
++ /* Should be impossible */
++ ubifs_assert(0);
++ if (err == -ENOENT)
++ err = -EINVAL;
++ return err;
++ }
++ ubifs_assert(*n == 0);
++ *n = -1;
++ }
++ break;
++ }
++ err = fallible_matches_name(c, &(*zn)->zbranch[*n], nm);
++ if (err < 0)
++ return err;
++ if (err == NAME_MATCHES)
++ return 1;
++ if (err == NOT_ON_MEDIA) {
++ o_znode = *zn;
++ o_n = *n;
++ continue;
++ }
++ if (!adding)
++ continue;
++ if (err == NAME_LESS)
++ break;
++ else
++ unsure = 0;
++ }
+ }
-+}
-+#else
-+static inline void atmci_init_debugfs(struct atmel_mci *host)
-+{
+
-+}
++ if (cmp == NAME_LESS || unsure) {
++ /* Look right */
++ *zn = znode;
++ *n = nn;
++ while (1) {
++ err = tnc_next(c, &znode, &nn);
++ if (err == -ENOENT)
++ break;
++ if (err < 0)
++ return err;
++ if (keys_cmp(c, &znode->zbranch[nn].key, key))
++ break;
++ err = fallible_matches_name(c, &znode->zbranch[nn], nm);
++ if (err < 0)
++ return err;
++ if (err == NAME_GREATER)
++ break;
++ *zn = znode;
++ *n = nn;
++ if (err == NAME_MATCHES)
++ return 1;
++ if (err == NOT_ON_MEDIA) {
++ o_znode = znode;
++ o_n = nn;
++ }
++ }
++ }
+
-+static inline void atmci_cleanup_debugfs(struct atmel_mci *host)
-+{
++ /* Never match a dangling branch when adding */
++ if (adding || !o_znode)
++ return 0;
+
++ dbg_mnt("dangling match LEB %d:%d len %d %s",
++ o_znode->zbranch[o_n].lnum, o_znode->zbranch[o_n].offs,
++ o_znode->zbranch[o_n].len, DBGKEY(key));
++ *zn = o_znode;
++ *n = o_n;
++ return 1;
+}
-+#endif /* CONFIG_DEBUG_FS */
+
-+static inline unsigned int ns_to_clocks(struct atmel_mci *host,
-+ unsigned int ns)
++/**
++ * matches_position - determine if a zbranch matches a given position.
++ * @zbr: zbranch of dent
++ * @lnum: LEB number of dent to match
++ * @offs: offset of dent to match
++ *
++ * This function returns %1 if @lnum:@offs matches, and %0 otherwise.
++ */
++static int matches_position(struct ubifs_zbranch *zbr, int lnum, int offs)
+{
-+ return (ns * (host->bus_hz / 1000000) + 999) / 1000;
++ if (zbr->lnum == lnum && zbr->offs == offs)
++ return 1;
++ else
++ return 0;
+}
+
-+static void atmci_set_timeout(struct atmel_mci *host,
-+ struct mmc_data *data)
-+{
-+ static unsigned dtomul_to_shift[] = {
-+ 0, 4, 7, 8, 10, 12, 16, 20
-+ };
-+ unsigned timeout;
-+ unsigned dtocyc, dtomul;
++/**
++ * resolve_collision_directly - resolve a collision directly.
++ * @c: UBIFS file-system description object
++ * @key: key of directory entry
++ * @zn: znode is passed and returned here
++ * @n: zbranch number is passed and returned here
++ * @lnum: LEB number of dent node to match
++ * @offs: offset of dent node to match
++ *
++ * This function is used for "hashed" keys to make sure the found directory or
++ * extended attribute entry node is what was looked for. It is used when the
++ * flash address of the right node is known (@lnum:@offs) which makes it much
++ * easier to resolve collisions (no need to read entries and match full
++ * names). This function returns %1 and sets @zn and @n if the collision is
++ * resolved, %0 if @lnum:@offs is not found and @zn and @n are set to the
++ * previous directory entry. Otherwise a negative error code is returned.
++ */
++static int resolve_collision_directly(struct ubifs_info *c,
++ const union ubifs_key *key,
++ struct ubifs_znode **zn, int *n,
++ int lnum, int offs)
++{
++ struct ubifs_znode *znode;
++ int nn, err;
++
++ znode = *zn;
++ nn = *n;
++ if (matches_position(&znode->zbranch[nn], lnum, offs))
++ return 1;
++
++ /* Look left */
++ while (1) {
++ err = tnc_prev(c, &znode, &nn);
++ if (err == -ENOENT)
++ break;
++ if (err < 0)
++ return err;
++ if (keys_cmp(c, &znode->zbranch[nn].key, key))
++ break;
++ if (matches_position(&znode->zbranch[nn], lnum, offs)) {
++ *zn = znode;
++ *n = nn;
++ return 1;
++ }
++ }
+
-+ timeout = ns_to_clocks(host, data->timeout_ns) + data->timeout_clks;
++ /* Look right */
++ znode = *zn;
++ nn = *n;
++ while (1) {
++ err = tnc_next(c, &znode, &nn);
++ if (err == -ENOENT)
++ return 0;
++ if (err < 0)
++ return err;
++ if (keys_cmp(c, &znode->zbranch[nn].key, key))
++ return 0;
++ *zn = znode;
++ *n = nn;
++ if (matches_position(&znode->zbranch[nn], lnum, offs))
++ return 1;
++ }
++}
+
-+ for (dtomul = 0; dtomul < 8; dtomul++) {
-+ unsigned shift = dtomul_to_shift[dtomul];
-+ dtocyc = (timeout + (1 << shift) - 1) >> shift;
-+ if (dtocyc < 15)
-+ break;
++/**
++ * dirty_cow_bottom_up - dirty a znode and its ancestors.
++ * @c: UBIFS file-system description object
++ * @znode: znode to dirty
++ *
++ * If we do not have a unique key that resides in a znode, then we cannot
++ * dirty that znode from the top down (i.e. by using lookup_level0_dirty)
++ * This function records the path back to the last dirty ancestor, and then
++ * dirties the znodes on that path.
++ */
++static struct ubifs_znode *dirty_cow_bottom_up(struct ubifs_info *c,
++ struct ubifs_znode *znode)
++{
++ struct ubifs_znode *zp;
++ int *path = c->bottom_up_buf, p = 0;
++
++ ubifs_assert(c->zroot.znode);
++ ubifs_assert(znode);
++ if (c->zroot.znode->level > BOTTOM_UP_HEIGHT) {
++ kfree(c->bottom_up_buf);
++ c->bottom_up_buf = kmalloc(c->zroot.znode->level * sizeof(int),
++ GFP_NOFS);
++ if (!c->bottom_up_buf)
++ return ERR_PTR(-ENOMEM);
++ path = c->bottom_up_buf;
+ }
++ if (c->zroot.znode->level) {
++ /* Go up until parent is dirty */
++ while (1) {
++ int n;
+
-+ if (dtomul >= 8) {
-+ dtomul = 7;
-+ dtocyc = 15;
++ zp = znode->parent;
++ if (!zp)
++ break;
++ n = znode->iip;
++ ubifs_assert(p < c->zroot.znode->level);
++ path[p++] = n;
++ if (!zp->cnext && ubifs_zn_dirty(znode))
++ break;
++ znode = zp;
++ }
+ }
+
-+ dev_dbg(&host->mmc->class_dev, "setting timeout to %u cycles\n",
-+ dtocyc << dtomul_to_shift[dtomul]);
-+ mci_writel(host, DTOR, (MCI_BF(DTOMUL, dtomul)
-+ | MCI_BF(DTOCYC, dtocyc)));
++ /* Come back down, dirtying as we go */
++ while (1) {
++ struct ubifs_zbranch *zbr;
++
++ zp = znode->parent;
++ if (zp) {
++ ubifs_assert(path[p - 1] >= 0);
++ ubifs_assert(path[p - 1] < zp->child_cnt);
++ zbr = &zp->zbranch[path[--p]];
++ znode = dirty_cow_znode(c, zbr);
++ } else {
++ ubifs_assert(znode == c->zroot.znode);
++ znode = dirty_cow_znode(c, &c->zroot);
++ }
++ if (unlikely(IS_ERR(znode)) || !p)
++ break;
++ ubifs_assert(path[p - 1] >= 0);
++ ubifs_assert(path[p - 1] < znode->child_cnt);
++ znode = znode->zbranch[path[p - 1]].znode;
++ }
++
++ return znode;
+}
+
-+/*
-+ * Return mask with command flags to be enabled for this command.
++/**
++ * ubifs_lookup_level0 - search for zero-level znode.
++ * @c: UBIFS file-system description object
++ * @key: key to lookup
++ * @zn: znode is returned here
++ * @n: znode branch slot number is returned here
++ *
++ * This function looks up the TNC tree and search for zero-level znode which
++ * refers key @key. The found zero-level znode is returned in @zn. There are 3
++ * cases:
++ * o exact match, i.e. the found zero-level znode contains key @key, then %1
++ * is returned and slot number of the matched branch is stored in @n;
++ * o not exact match, which means that zero-level znode does not contain
++ * @key, then %0 is returned and slot number of the closed branch is stored
++ * in @n;
++ * o @key is so small that it is even less than the lowest key of the
++ * leftmost zero-level node, then %0 is returned and %0 is stored in @n.
++ *
++ * Note, when the TNC tree is traversed, some znodes may be absent, then this
++ * function reads corresponding indexing nodes and inserts them to TNC. In
++ * case of failure, a negative error code is returned.
+ */
-+static u32 atmci_prepare_command(struct mmc_host *mmc,
-+ struct mmc_command *cmd)
-+{
-+ u32 cmdr;
-+
-+ cmd->error = 0;
++int ubifs_lookup_level0(struct ubifs_info *c, const union ubifs_key *key,
++ struct ubifs_znode **zn, int *n)
++{
++ int err, exact;
++ struct ubifs_znode *znode;
++ unsigned long time = get_seconds();
+
-+ cmdr = MCI_BF(CMDNB, cmd->opcode);
++ dbg_tnc("search key %s", DBGKEY(key));
+
-+ if (cmd->flags & MMC_RSP_PRESENT) {
-+ if (cmd->flags & MMC_RSP_136)
-+ cmdr |= MCI_BF(RSPTYP, MCI_RSPTYP_136_BIT);
-+ else
-+ cmdr |= MCI_BF(RSPTYP, MCI_RSPTYP_48_BIT);
++ znode = c->zroot.znode;
++ if (unlikely(!znode)) {
++ znode = ubifs_load_znode(c, &c->zroot, NULL, 0);
++ if (IS_ERR(znode))
++ return PTR_ERR(znode);
+ }
+
-+ /*
-+ * This should really be MAXLAT_5 for CMD2 and ACMD41, but
-+ * it's too difficult to determine whether this is an ACMD or
-+ * not. Better make it 64.
-+ */
-+ cmdr |= MCI_BIT(MAXLAT);
++ znode->time = time;
+
-+ if (mmc->ios.bus_mode == MMC_BUSMODE_OPENDRAIN)
-+ cmdr |= MCI_BIT(OPDCMD);
++ while (1) {
++ struct ubifs_zbranch *zbr;
+
-+ dev_dbg(&mmc->class_dev,
-+ "cmd: op %02x arg %08x flags %08x, cmdflags %08lx\n",
-+ cmd->opcode, cmd->arg, cmd->flags, (unsigned long)cmdr);
++ exact = ubifs_search_zbranch(c, znode, key, n);
+
-+ return cmdr;
-+}
++ if (znode->level == 0)
++ break;
+
-+static void atmci_start_command(struct atmel_mci *host,
-+ struct mmc_command *cmd,
-+ u32 cmd_flags)
-+{
-+ WARN_ON(host->cmd);
-+ host->cmd = cmd;
++ if (*n < 0)
++ *n = 0;
++ zbr = &znode->zbranch[*n];
+
-+ mci_writel(host, ARGR, cmd->arg);
-+ mci_writel(host, CMDR, cmd_flags);
++ if (zbr->znode) {
++ znode->time = time;
++ znode = zbr->znode;
++ continue;
++ }
+
-+ if (cmd->data)
-+ dma_start_request(host->dma.req.req.dmac,
-+ host->dma.req.req.channel);
++ /* znode is not in TNC cache, load it from the media */
++ znode = ubifs_load_znode(c, zbr, znode, *n);
++ if (IS_ERR(znode))
++ return PTR_ERR(znode);
++ }
++
++ *zn = znode;
++ if (exact || !is_hash_key(c, key) || *n != -1) {
++ dbg_tnc("found %d, lvl %d, n %d", exact, znode->level, *n);
++ return exact;
++ }
++
++ /*
++ * Here is a tricky place. We have not found the key and this is a
++ * "hashed" key, which may collide. The rest of the code deals with
++ * situations like this:
++ *
++ * | 3 | 5 |
++ * / \
++ * | 3 | 5 | | 6 | 7 | (x)
++ *
++ * Or more a complex example:
++ *
++ * | 1 | 5 |
++ * / \
++ * | 1 | 3 | | 5 | 8 |
++ * \ /
++ * | 5 | 5 | | 6 | 7 | (x)
++ *
++ * In the examples, if we are looking for key "5", we may reach nodes
++ * marked with "(x)". In this case what we have do is to look at the
++ * left and see if there is "5" key there. If there is, we have to
++ * return it.
++ *
++ * Note, this whole situation is possible because we allow to have
++ * elements which are equivalent to the next key in the parent in the
++ * children of current znode. For example, this happens if we split a
++ * znode like this: | 3 | 5 | 5 | 6 | 7 |, which results in something
++ * like this:
++ * | 3 | 5 |
++ * / \
++ * | 3 | 5 | | 5 | 6 | 7 |
++ * ^
++ * And this becomes what is at the first "picture" after key "5" marked
++ * with "^" is removed. What could be done is we could prohibit
++ * splitting in the middle of the colliding sequence. Also, when
++ * removing the leftmost key, we would have to correct the key of the
++ * parent node, which would introduce additional complications. Namely,
++ * if we changed the the leftmost key of the parent znode, the garbage
++ * collector would be unable to find it (GC is doing this when GC'ing
++ * indexing LEBs). Although we already have an additional RB-tree where
++ * we save such changed znodes (see 'ins_clr_old_idx_znode()') until
++ * after the commit. But anyway, this does not look easy to implement
++ * so we did not try this.
++ */
++ err = tnc_prev(c, &znode, n);
++ if (err == -ENOENT) {
++ dbg_tnc("found 0, lvl %d, n -1", znode->level);
++ *n = -1;
++ return 0;
++ }
++ if (unlikely(err < 0))
++ return err;
++ if (keys_cmp(c, key, &znode->zbranch[*n].key)) {
++ dbg_tnc("found 0, lvl %d, n -1", znode->level);
++ *n = -1;
++ return 0;
++ }
++
++ dbg_tnc("found 1, lvl %d, n %d", znode->level, *n);
++ *zn = znode;
++ return 1;
+}
+
-+/*
-+ * Returns a mask of flags to be set in the command register when the
-+ * command to start the transfer is to be sent.
++/**
++ * lookup_level0_dirty - search for zero-level znode dirtying.
++ * @c: UBIFS file-system description object
++ * @key: key to lookup
++ * @zn: znode is returned here
++ * @n: znode branch slot number is returned here
++ *
++ * This function looks up the TNC tree and search for zero-level znode which
++ * refers key @key. The found zero-level znode is returned in @zn. There are 3
++ * cases:
++ * o exact match, i.e. the found zero-level znode contains key @key, then %1
++ * is returned and slot number of the matched branch is stored in @n;
++ * o not exact match, which means that zero-level znode does not contain @key
++ * then %0 is returned and slot number of the closed branch is stored in
++ * @n;
++ * o @key is so small that it is even less than the lowest key of the
++ * leftmost zero-level node, then %0 is returned and %-1 is stored in @n.
++ *
++ * Additionally all znodes in the path from the root to the located zero-level
++ * znode are marked as dirty.
++ *
++ * Note, when the TNC tree is traversed, some znodes may be absent, then this
++ * function reads corresponding indexing nodes and inserts them to TNC. In
++ * case of failure, a negative error code is returned.
+ */
-+static u32 atmci_prepare_data(struct mmc_host *mmc, struct mmc_data *data)
++static int lookup_level0_dirty(struct ubifs_info *c, const union ubifs_key *key,
++ struct ubifs_znode **zn, int *n)
+{
-+ struct atmel_mci *host = mmc_priv(mmc);
-+ u32 cmd_flags;
++ int err, exact;
++ struct ubifs_znode *znode;
++ unsigned long time = get_seconds();
+
-+ WARN_ON(host->data);
-+ host->data = data;
++ dbg_tnc("search and dirty key %s", DBGKEY(key));
+
-+ atmci_set_timeout(host, data);
-+ mci_writel(host, BLKR, (MCI_BF(BCNT, data->blocks)
-+ | MCI_BF(BLKLEN, data->blksz)));
-+ host->dma.req.block_size = data->blksz;
-+ host->dma.req.nr_blocks = data->blocks;
++ znode = c->zroot.znode;
++ if (unlikely(!znode)) {
++ znode = ubifs_load_znode(c, &c->zroot, NULL, 0);
++ if (IS_ERR(znode))
++ return PTR_ERR(znode);
++ }
+
-+ cmd_flags = MCI_BF(TRCMD, MCI_TRCMD_START_TRANS);
-+ if (data->flags & MMC_DATA_STREAM)
-+ cmd_flags |= MCI_BF(TRTYP, MCI_TRTYP_STREAM);
-+ else if (data->blocks > 1)
-+ cmd_flags |= MCI_BF(TRTYP, MCI_TRTYP_MULTI_BLOCK);
-+ else
-+ cmd_flags |= MCI_BF(TRTYP, MCI_TRTYP_BLOCK);
++ znode = dirty_cow_znode(c, &c->zroot);
++ if (IS_ERR(znode))
++ return PTR_ERR(znode);
+
-+ if (data->flags & MMC_DATA_READ) {
-+ cmd_flags |= MCI_BIT(TRDIR);
-+ host->dma.req.nr_sg
-+ = dma_map_sg(&host->pdev->dev, data->sg,
-+ data->sg_len, DMA_FROM_DEVICE);
-+ host->dma.req.periph_id = host->dma.rx_periph_id;
-+ host->dma.req.direction = DMA_DIR_PERIPH_TO_MEM;
-+ host->dma.req.data_reg = host->mapbase + MCI_RDR;
-+ } else {
-+ host->dma.req.nr_sg
-+ = dma_map_sg(&host->pdev->dev, data->sg,
-+ data->sg_len, DMA_TO_DEVICE);
-+ host->dma.req.periph_id = host->dma.tx_periph_id;
-+ host->dma.req.direction = DMA_DIR_MEM_TO_PERIPH;
-+ host->dma.req.data_reg = host->mapbase + MCI_TDR;
-+ }
-+ host->dma.req.sg = data->sg;
++ znode->time = time;
+
-+ dma_prepare_request_sg(host->dma.req.req.dmac, &host->dma.req);
++ while (1) {
++ struct ubifs_zbranch *zbr;
+
-+ return cmd_flags;
-+}
++ exact = ubifs_search_zbranch(c, znode, key, n);
+
-+static void atmci_request(struct mmc_host *mmc, struct mmc_request *mrq)
-+{
-+ struct atmel_mci *host = mmc_priv(mmc);
-+ struct mmc_data *data = mrq->data;
-+ u32 iflags;
-+ u32 cmdflags = 0;
++ if (znode->level == 0)
++ break;
+
-+ iflags = mci_readl(host, IMR);
-+ if (iflags)
-+ dev_warn(&mmc->class_dev, "WARNING: IMR=0x%08x\n",
-+ mci_readl(host, IMR));
++ if (*n < 0)
++ *n = 0;
++ zbr = &znode->zbranch[*n];
+
-+ WARN_ON(host->mrq != NULL);
++ if (zbr->znode) {
++ znode->time = time;
++ znode = dirty_cow_znode(c, zbr);
++ if (IS_ERR(znode))
++ return PTR_ERR(znode);
++ continue;
++ }
++
++ /* znode is not in TNC cache, load it from the media */
++ znode = ubifs_load_znode(c, zbr, znode, *n);
++ if (IS_ERR(znode))
++ return PTR_ERR(znode);
++ znode = dirty_cow_znode(c, zbr);
++ if (IS_ERR(znode))
++ return PTR_ERR(znode);
++ }
++
++ *zn = znode;
++ if (exact || !is_hash_key(c, key) || *n != -1) {
++ dbg_tnc("found %d, lvl %d, n %d", exact, znode->level, *n);
++ return exact;
++ }
+
+ /*
-+ * We may "know" the card is gone even though there's still an
-+ * electrical connection. If so, we really need to communicate
-+ * this to the MMC core since there won't be any more
-+ * interrupts as the card is completely removed. Otherwise,
-+ * the MMC core might believe the card is still there even
-+ * though the card was just removed very slowly.
++ * See huge comment at 'lookup_level0_dirty()' what is the rest of the
++ * code.
+ */
-+ if (!host->present) {
-+ mrq->cmd->error = -ENOMEDIUM;
-+ mmc_request_done(mmc, mrq);
-+ return;
++ err = tnc_prev(c, &znode, n);
++ if (err == -ENOENT) {
++ *n = -1;
++ dbg_tnc("found 0, lvl %d, n -1", znode->level);
++ return 0;
++ }
++ if (unlikely(err < 0))
++ return err;
++ if (keys_cmp(c, key, &znode->zbranch[*n].key)) {
++ *n = -1;
++ dbg_tnc("found 0, lvl %d, n -1", znode->level);
++ return 0;
+ }
+
-+ host->mrq = mrq;
-+ host->pending_events = 0;
-+ host->completed_events = 0;
++ if (znode->cnext || !ubifs_zn_dirty(znode)) {
++ znode = dirty_cow_bottom_up(c, znode);
++ if (IS_ERR(znode))
++ return PTR_ERR(znode);
++ }
+
-+ iflags = MCI_BIT(CMDRDY);
-+ cmdflags = atmci_prepare_command(mmc, mrq->cmd);
++ dbg_tnc("found 1, lvl %d, n %d", znode->level, *n);
++ *zn = znode;
++ return 1;
++}
+
-+ if (mrq->stop) {
-+ WARN_ON(!data);
++/**
++ * ubifs_tnc_lookup - look up a file-system node.
++ * @c: UBIFS file-system description object
++ * @key: node key to lookup
++ * @node: the node is returned here
++ *
++ * This function look up and reads node with key @key. The caller has to make
++ * sure the @node buffer is large enough to fit the node. Returns zero in case
++ * of success, %-ENOENT if the node was not found, and a negative error code in
++ * case of failure.
++ */
++int ubifs_tnc_lookup(struct ubifs_info *c, const union ubifs_key *key,
++ void *node)
++{
++ int found, n, err;
++ struct ubifs_znode *znode;
++ struct ubifs_zbranch zbr, *zt;
+
-+ host->stop_cmdr = atmci_prepare_command(mmc, mrq->stop);
-+ host->stop_cmdr |= MCI_BF(TRCMD, MCI_TRCMD_STOP_TRANS);
-+ if (!(data->flags & MMC_DATA_WRITE))
-+ host->stop_cmdr |= MCI_BIT(TRDIR);
-+ if (data->flags & MMC_DATA_STREAM)
-+ host->stop_cmdr |= MCI_BF(TRTYP, MCI_TRTYP_STREAM);
-+ else
-+ host->stop_cmdr |= MCI_BF(TRTYP, MCI_TRTYP_MULTI_BLOCK);
++ mutex_lock(&c->tnc_mutex);
++ found = ubifs_lookup_level0(c, key, &znode, &n);
++ if (!found) {
++ err = -ENOENT;
++ goto out;
++ } else if (found < 0) {
++ err = found;
++ goto out;
+ }
-+ if (data) {
-+ cmdflags |= atmci_prepare_data(mmc, data);
-+ iflags |= MCI_DATA_ERROR_FLAGS;
++ zt = &znode->zbranch[n];
++ if (is_hash_key(c, key)) {
++ /*
++ * In this case the leaf node cache gets used, so we pass the
++ * address of the zbranch and keep the mutex locked
++ */
++ err = tnc_read_node_nm(c, zt, node);
++ goto out;
+ }
++ zbr = znode->zbranch[n];
++ mutex_unlock(&c->tnc_mutex);
+
-+ atmci_start_command(host, mrq->cmd, cmdflags);
-+ mci_writel(host, IER, iflags);
++ err = ubifs_tnc_read_node(c, &zbr, node);
++ return err;
++
++out:
++ mutex_unlock(&c->tnc_mutex);
++ return err;
+}
+
-+static void atmci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
++/**
++ * ubifs_tnc_locate - look up a file-system node and return it and its location.
++ * @c: UBIFS file-system description object
++ * @key: node key to lookup
++ * @node: the node is returned here
++ * @lnum: LEB number is returned here
++ * @offs: offset is returned here
++ *
++ * This function is the same as 'ubifs_tnc_lookup()' but it returns the node
++ * location also. See 'ubifs_tnc_lookup()'.
++ */
++int ubifs_tnc_locate(struct ubifs_info *c, const union ubifs_key *key,
++ void *node, int *lnum, int *offs)
+{
-+ struct atmel_mci *host = mmc_priv(mmc);
-+ u32 mr;
++ int found, n, err;
++ struct ubifs_znode *znode;
++ struct ubifs_zbranch zbr, *zt;
+
-+ if (ios->clock) {
-+ u32 clkdiv;
++ mutex_lock(&c->tnc_mutex);
++ found = ubifs_lookup_level0(c, key, &znode, &n);
++ if (!found) {
++ err = -ENOENT;
++ goto out;
++ } else if (found < 0) {
++ err = found;
++ goto out;
++ }
++ zt = &znode->zbranch[n];
++ if (is_hash_key(c, key)) {
++ /*
++ * In this case the leaf node cache gets used, so we pass the
++ * address of the zbranch and keep the mutex locked
++ */
++ *lnum = zt->lnum;
++ *offs = zt->offs;
++ err = tnc_read_node_nm(c, zt, node);
++ goto out;
++ }
++ zbr = znode->zbranch[n];
++ mutex_unlock(&c->tnc_mutex);
+
-+ /* Set clock rate */
-+ clkdiv = DIV_ROUND_UP(host->bus_hz, 2 * ios->clock) - 1;
-+ if (clkdiv > 255) {
-+ dev_warn(&mmc->class_dev,
-+ "clock %u too slow; using %lu\n",
-+ ios->clock, host->bus_hz / (2 * 256));
-+ clkdiv = 255;
-+ }
++ *lnum = zbr.lnum;
++ *offs = zbr.offs;
+
-+ mr = mci_readl(host, MR);
-+ mr = MCI_BFINS(CLKDIV, clkdiv, mr)
-+ | MCI_BIT(WRPROOF) | MCI_BIT(RDPROOF);
-+ mci_writel(host, MR, mr);
++ err = ubifs_tnc_read_node(c, &zbr, node);
++ return err;
+
-+ /* Enable the MCI controller */
-+ mci_writel(host, CR, MCI_BIT(MCIEN));
-+ } else {
-+ /* Disable the MCI controller */
-+ mci_writel(host, CR, MCI_BIT(MCIDIS));
-+ }
++out:
++ mutex_unlock(&c->tnc_mutex);
++ return err;
++}
+
-+ switch (ios->bus_width) {
-+ case MMC_BUS_WIDTH_1:
-+ mci_writel(host, SDCR, 0);
-+ break;
-+ case MMC_BUS_WIDTH_4:
-+ mci_writel(host, SDCR, MCI_BIT(SDCBUS));
-+ break;
++/**
++ * do_lookup_nm- look up a "hashed" node.
++ * directory entry file-system node.
++ * @c: UBIFS file-system description object
++ * @key: node key to lookup
++ * @node: the node is returned here
++ * @nm: node name
++ *
++ * This function look up and reads a node which contains name hash in the key.
++ * Since the hash may have collisions, there may be many nodes with the same
++ * key, so we have to sequentially look to all of them until the needed one is
++ * found. This function returns zero in case of success, %-ENOENT if the node
++ * was not found, and a negative error code in case of failure.
++ */
++static int do_lookup_nm(struct ubifs_info *c, const union ubifs_key *key,
++ void *node, const struct qstr *nm)
++{
++ int found, n, err;
++ struct ubifs_znode *znode;
++ struct ubifs_zbranch zbr;
++
++ dbg_tnc("name '%.*s' key %s", nm->len, nm->name, DBGKEY(key));
++ mutex_lock(&c->tnc_mutex);
++ found = ubifs_lookup_level0(c, key, &znode, &n);
++ if (!found) {
++ err = -ENOENT;
++ goto out_unlock;
++ } else if (found < 0) {
++ err = found;
++ goto out_unlock;
+ }
+
-+ switch (ios->power_mode) {
-+ case MMC_POWER_ON:
-+ /* Send init sequence (74 clock cycles) */
-+ mci_writel(host, IDR, ~0UL);
-+ mci_writel(host, CMDR, MCI_BF(SPCMD, MCI_SPCMD_INIT_CMD));
-+ while (!(mci_readl(host, SR) & MCI_BIT(CMDRDY)))
-+ cpu_relax();
-+ break;
-+ default:
-+ /*
-+ * TODO: None of the currently available AVR32-based
-+ * boards allow MMC power to be turned off. Implement
-+ * power control when this can be tested properly.
-+ */
-+ break;
++ ubifs_assert(n >= 0);
++
++ err = resolve_collision(c, key, &znode, &n, nm);
++ dbg_tnc("rc returned %d, znode %p, n %d", err, znode, n);
++ if (unlikely(err < 0))
++ goto out_unlock;
++ if (err == 0) {
++ err = -ENOENT;
++ goto out_unlock;
+ }
-+}
+
-+static int atmci_get_ro(struct mmc_host *mmc)
-+{
-+ int read_only = 0;
-+ struct atmel_mci *host = mmc_priv(mmc);
++ zbr = znode->zbranch[n];
++ mutex_unlock(&c->tnc_mutex);
+
-+ if (host->wp_pin >= 0) {
-+ read_only = gpio_get_value(host->wp_pin);
-+ dev_dbg(&mmc->class_dev, "card is %s\n",
-+ read_only ? "read-only" : "read-write");
-+ } else {
-+ dev_dbg(&mmc->class_dev,
-+ "no pin for checking read-only switch."
-+ " Assuming write-enable.\n");
-+ }
++ err = tnc_read_node_nm(c, &zbr, node);
++ return err;
+
-+ return read_only;
++out_unlock:
++ mutex_unlock(&c->tnc_mutex);
++ return err;
+}
+
-+static struct mmc_host_ops atmci_ops = {
-+ .request = atmci_request,
-+ .set_ios = atmci_set_ios,
-+ .get_ro = atmci_get_ro,
-+};
-+
-+static void atmci_request_end(struct mmc_host *mmc, struct mmc_request *mrq)
++/**
++ * ubifs_tnc_lookup_nm- look up a "hashed" node.
++ * directory entry file-system node.
++ * @c: UBIFS file-system description object
++ * @key: node key to lookup
++ * @node: the node is returned here
++ * @nm: node name
++ *
++ * This function look up and reads a node which contains name hash in the key.
++ * Since the hash may have collisions, there may be many nodes with the same
++ * key, so we have to sequentially look to all of them until the needed one is
++ * found. This function returns zero in case of success, %-ENOENT if the node
++ * was not found, and a negative error code in case of failure.
++ */
++int ubifs_tnc_lookup_nm(struct ubifs_info *c, const union ubifs_key *key,
++ void *node, const struct qstr *nm)
+{
-+ struct atmel_mci *host = mmc_priv(mmc);
++ int err, len;
++ const struct ubifs_dent_node *dent = node;
++
++ /*
++ * We assume that in most of the cases there are no name collisions and
++ * 'ubifs_tnc_lookup()' returns us the right direntry.
++ */
++ err = ubifs_tnc_lookup(c, key, node);
++ if (err)
++ return err;
+
-+ WARN_ON(host->cmd || host->data);
-+ host->mrq = NULL;
++ len = le16_to_cpu(dent->nlen);
++ if (nm->len == len && !memcmp(dent->name, nm->name, len))
++ return 0;
+
-+ mmc_request_done(mmc, mrq);
++ /*
++ * Unluckily, there are hash collisions and we have to iterate over
++ * them look at each direntry with colliding name hash sequentially.
++ */
++ return do_lookup_nm(c, key, node, nm);
+}
+
-+static void send_stop_cmd(struct mmc_host *mmc, struct mmc_data *data,
-+ u32 flags)
++/**
++ * correct_parent_keys - correct parent znodes' keys.
++ * @c: UBIFS file-system description object
++ * @znode: znode to correct parent znodes for
++ *
++ * This is a helper function for 'tnc_insert()'. When the key of the leftmost
++ * zbranch changes, keys of parent znodes have to be corrected. This helper
++ * function is called in such situations and corrects the keys if needed.
++ */
++static void correct_parent_keys(const struct ubifs_info *c,
++ struct ubifs_znode *znode)
+{
-+ struct atmel_mci *host = mmc_priv(mmc);
++ union ubifs_key *key, *key1;
+
-+ atmci_start_command(host, data->stop, host->stop_cmdr | flags);
-+ mci_writel(host, IER, MCI_BIT(CMDRDY));
++ ubifs_assert(znode->parent);
++ ubifs_assert(znode->iip == 0);
++
++ key = &znode->zbranch[0].key;
++ key1 = &znode->parent->zbranch[0].key;
++
++ while (keys_cmp(c, key, key1) < 0) {
++ key_copy(c, key, key1);
++ znode = znode->parent;
++ if (!znode->parent || znode->iip)
++ break;
++ key1 = &znode->parent->zbranch[0].key;
++ }
+}
+
-+static void atmci_data_complete(struct atmel_mci *host, struct mmc_data *data)
++/**
++ * insert_zbranch - insert a zbranch into a znode.
++ * @znode: znode into which to insert
++ * @zbr: zbranch to insert
++ * @n: slot number to insert to
++ *
++ * This is a helper function for 'tnc_insert()'. UBIFS does not allow "gaps" in
++ * znode's array of zbranches and keeps zbranches consolidated, so when a new
++ * zbranch has to be inserted to the @znode->zbranches[]' array at the @n-th
++ * slot, zbranches starting from @n have to be moved right.
++ */
++static void insert_zbranch(struct ubifs_znode *znode,
++ const struct ubifs_zbranch *zbr, int n)
+{
-+ host->data = NULL;
-+ dma_unmap_sg(&host->pdev->dev, data->sg, host->dma.req.nr_sg,
-+ ((data->flags & MMC_DATA_WRITE)
-+ ? DMA_TO_DEVICE : DMA_FROM_DEVICE));
++ int i;
++
++ ubifs_assert(ubifs_zn_dirty(znode));
++
++ if (znode->level) {
++ for (i = znode->child_cnt; i > n; i--) {
++ znode->zbranch[i] = znode->zbranch[i - 1];
++ if (znode->zbranch[i].znode)
++ znode->zbranch[i].znode->iip = i;
++ }
++ if (zbr->znode)
++ zbr->znode->iip = n;
++ } else
++ for (i = znode->child_cnt; i > n; i--)
++ znode->zbranch[i] = znode->zbranch[i - 1];
++
++ znode->zbranch[n] = *zbr;
++ znode->child_cnt += 1;
+
+ /*
-+ * Data might complete before command for very short transfers
-+ * (like READ_SCR)
++ * After inserting at slot zero, the lower bound of the key range of
++ * this znode may have changed. If this znode is subsequently split
++ * then the upper bound of the key range may change, and furthermore
++ * it could change to be lower than the original lower bound. If that
++ * happens, then it will no longer be possible to find this znode in the
++ * TNC using the key from the index node on flash. That is bad because
++ * if it is not found, we will assume it is obsolete and may overwrite
++ * it. Then if there is an unclean unmount, we will start using the
++ * old index which will be broken.
++ *
++ * So we first mark znodes that have insertions at slot zero, and then
++ * if they are split we add their lnum/offs to the old_idx tree.
+ */
-+ if (mci_cmd_is_complete(host)
-+ && (!data->stop || mci_stop_is_complete(host)))
-+ atmci_request_end(host->mmc, data->mrq);
++ if (n == 0)
++ znode->alt = 1;
+}
+
-+static void atmci_command_complete(struct atmel_mci *host,
-+ struct mmc_command *cmd, u32 status)
++/**
++ * tnc_insert - insert a node into TNC.
++ * @c: UBIFS file-system description object
++ * @znode: znode to insert into
++ * @zbr: branch to insert
++ * @n: slot number to insert new zbranch to
++ *
++ * This function inserts a new node described by @zbr into znode @znode. If
++ * znode does not have a free slot for new zbranch, it is split. Parent znodes
++ * are splat as well if needed. Returns zero in case of success or a negative
++ * error code in case of failure.
++ */
++static int tnc_insert(struct ubifs_info *c, struct ubifs_znode *znode,
++ struct ubifs_zbranch *zbr, int n)
+{
-+ if (status & MCI_BIT(RTOE))
-+ cmd->error = -ETIMEDOUT;
-+ else if ((cmd->flags & MMC_RSP_CRC)
-+ && (status & MCI_BIT(RCRCE)))
-+ cmd->error = -EILSEQ;
-+ else if (status & (MCI_BIT(RINDE) | MCI_BIT(RDIRE) | MCI_BIT(RENDE)))
-+ cmd->error = -EIO;
++ struct ubifs_znode *zn, *zi, *zp;
++ int i, keep, move, appending = 0;
++ union ubifs_key *key = &zbr->key;
+
-+ if (cmd->error) {
-+ dev_dbg(&host->mmc->class_dev,
-+ "command error: op=0x%x status=0x%08x\n",
-+ cmd->opcode, status);
++ ubifs_assert(n >= 0 && n <= c->fanout);
+
-+ if (cmd->data) {
-+ dma_stop_request(host->dma.req.req.dmac,
-+ host->dma.req.req.channel);
-+ mci_writel(host, IDR, MCI_BIT(NOTBUSY)
-+ | MCI_DATA_ERROR_FLAGS);
-+ host->data = NULL;
-+ }
-+ }
-+}
++ /* Implement naive insert for now */
++again:
++ zp = znode->parent;
++ if (znode->child_cnt < c->fanout) {
++ ubifs_assert(n != c->fanout);
++ dbg_tnc("inserted at %d level %d, key %s", n, znode->level,
++ DBGKEY(key));
+
-+static void atmci_detect_change(unsigned long data)
-+{
-+ struct atmel_mci *host = (struct atmel_mci *)data;
-+ struct mmc_request *mrq = host->mrq;
-+ int present;
++ insert_zbranch(znode, zbr, n);
++
++ /* Ensure parent's key is correct */
++ if (n == 0 && zp && znode->iip == 0)
++ correct_parent_keys(c, znode);
++
++ return 0;
++ }
+
+ /*
-+ * atmci_remove() sets detect_pin to -1 before freeing the
-+ * interrupt. We must not re-enable the interrupt if it has
-+ * been freed.
++ * Unfortunately, @znode does not have more empty slots and we have to
++ * split it.
+ */
-+ smp_rmb();
-+ if (host->detect_pin < 0)
-+ return;
++ dbg_tnc("splitting level %d, key %s", znode->level, DBGKEY(key));
+
-+ enable_irq(gpio_to_irq(host->detect_pin));
-+ present = !gpio_get_value(host->detect_pin);
++ if (znode->alt)
++ /*
++ * We can no longer be sure of finding this znode by key, so we
++ * record it in the old_idx tree.
++ */
++ ins_clr_old_idx_znode(c, znode);
+
-+ dev_vdbg(&host->pdev->dev, "detect change: %d (was %d)\n",
-+ present, host->present);
++ zn = kzalloc(c->max_znode_sz, GFP_NOFS);
++ if (!zn)
++ return -ENOMEM;
++ zn->parent = zp;
++ zn->level = znode->level;
+
-+ if (present != host->present) {
-+ dev_dbg(&host->mmc->class_dev, "card %s\n",
-+ present ? "inserted" : "removed");
-+ host->present = present;
++ /* Decide where to split */
++ if (znode->level == 0 && n == c->fanout &&
++ key_type(c, key) == UBIFS_DATA_KEY) {
++ union ubifs_key *key1;
+
-+ /* Reset controller if card is gone */
-+ if (!present) {
-+ mci_writel(host, CR, MCI_BIT(SWRST));
-+ mci_writel(host, IDR, ~0UL);
-+ mci_writel(host, CR, MCI_BIT(MCIEN));
-+ }
++ /*
++ * If this is an inode which is being appended - do not split
++ * it because no other zbranches can be inserted between
++ * zbranches of consecutive data nodes anyway.
++ */
++ key1 = &znode->zbranch[n - 1].key;
++ if (key_inum(c, key1) == key_inum(c, key) &&
++ key_type(c, key1) == UBIFS_DATA_KEY &&
++ key_block(c, key1) == key_block(c, key) - 1)
++ appending = 1;
++ }
+
-+ /* Clean up queue if present */
-+ if (mrq) {
-+ if (!mci_cmd_is_complete(host))
-+ mrq->cmd->error = -ENOMEDIUM;
-+ if (mrq->data && !mci_data_is_complete(host)
-+ && !mci_data_error_is_complete(host)) {
-+ dma_stop_request(host->dma.req.req.dmac,
-+ host->dma.req.req.channel);
-+ host->data->error = -ENOMEDIUM;
-+ atmci_data_complete(host, host->data);
-+ }
-+ if (mrq->stop && !mci_stop_is_complete(host))
-+ mrq->stop->error = -ENOMEDIUM;
++ if (appending) {
++ keep = c->fanout;
++ move = 0;
++ } else {
++ keep = (c->fanout + 1) / 2;
++ move = c->fanout - keep;
++ }
+
-+ host->cmd = NULL;
-+ atmci_request_end(host->mmc, mrq);
-+ }
++ /*
++ * Although we don't at present, we could look at the neighbors and see
++ * if we can move some zbranches there.
++ */
+
-+ mmc_detect_change(host->mmc, 0);
++ if (n < keep) {
++ /* Insert into existing znode */
++ zi = znode;
++ move += 1;
++ keep -= 1;
++ } else {
++ /* Insert into new znode */
++ zi = zn;
++ n -= keep;
++ /* Re-parent */
++ if (zn->level != 0)
++ zbr->znode->parent = zn;
+ }
-+}
+
-+static void atmci_tasklet_func(unsigned long priv)
-+{
-+ struct mmc_host *mmc = (struct mmc_host *)priv;
-+ struct atmel_mci *host = mmc_priv(mmc);
-+ struct mmc_request *mrq = host->mrq;
-+ struct mmc_data *data = host->data;
++ __set_bit(DIRTY_ZNODE, &zn->flags);
++ atomic_long_inc(&c->dirty_zn_cnt);
+
-+ dev_vdbg(&mmc->class_dev,
-+ "tasklet: pending/completed/mask %lx/%lx/%x\n",
-+ host->pending_events, host->completed_events,
-+ mci_readl(host, IMR));
++ zn->child_cnt = move;
++ znode->child_cnt = keep;
+
-+ if (mci_clear_cmd_is_pending(host)) {
-+ mci_set_cmd_complete(host);
-+ atmci_command_complete(host, mrq->cmd, host->cmd_status);
-+ if (!host->data || mci_data_is_complete(host)
-+ || mci_data_error_is_complete(host))
-+ atmci_request_end(mmc, mrq);
-+ }
-+ if (mci_clear_stop_is_pending(host)) {
-+ mci_set_stop_complete(host);
-+ atmci_command_complete(host, mrq->stop, host->stop_status);
-+ if (mci_data_is_complete(host)
-+ || mci_data_error_is_complete(host))
-+ atmci_request_end(mmc, mrq);
++ dbg_tnc("moving %d, keeping %d", move, keep);
++
++ /* Move zbranch */
++ for (i = 0; i < move; i++) {
++ zn->zbranch[i] = znode->zbranch[keep + i];
++ /* Re-parent */
++ if (zn->level != 0)
++ if (zn->zbranch[i].znode) {
++ zn->zbranch[i].znode->parent = zn;
++ zn->zbranch[i].znode->iip = i;
++ }
+ }
-+ if (mci_clear_dma_error_is_pending(host)) {
-+ mci_set_dma_error_complete(host);
-+ mci_clear_data_pending(host);
+
-+ /* DMA controller got bus error => invalid address */
-+ data->error = -EIO;
++ /* Insert new key and branch */
++ dbg_tnc("inserting at %d level %d, key %s", n, zn->level, DBGKEY(key));
+
-+ dev_dbg(&mmc->class_dev, "dma error after %u bytes xfered\n",
-+ host->data->bytes_xfered);
++ insert_zbranch(zi, zbr, n);
+
-+ if (data->stop
-+ && !mci_set_stop_sent_is_completed(host))
-+ /* TODO: Check if card is still present */
-+ send_stop_cmd(host->mmc, data, 0);
++ /* Insert new znode (produced by spitting) into the parent */
++ if (zp) {
++ i = n;
++ /* Locate insertion point */
++ n = znode->iip + 1;
++ if (appending && n != c->fanout)
++ appending = 0;
+
-+ atmci_data_complete(host, data);
++ if (i == 0 && zi == znode && znode->iip == 0)
++ correct_parent_keys(c, znode);
++
++ /* Tail recursion */
++ zbr->key = zn->zbranch[0].key;
++ zbr->znode = zn;
++ zbr->lnum = 0;
++ zbr->offs = 0;
++ zbr->len = 0;
++ znode = zp;
++
++ goto again;
+ }
-+ if (mci_clear_data_error_is_pending(host)) {
-+ u32 status = host->data_status;
+
-+ mci_set_data_error_complete(host);
-+ mci_clear_data_pending(host);
++ /* We have to split root znode */
++ dbg_tnc("creating new zroot at level %d", znode->level + 1);
+
-+ dma_stop_request(host->dma.req.req.dmac,
-+ host->dma.req.req.channel);
++ zi = kzalloc(c->max_znode_sz, GFP_NOFS);
++ if (!zi)
++ return -ENOMEM;
+
-+ if (status & MCI_BIT(DCRCE)) {
-+ dev_dbg(&mmc->class_dev, "data CRC error\n");
-+ data->error = -EILSEQ;
-+ } else if (status & MCI_BIT(DTOE)) {
-+ dev_dbg(&mmc->class_dev, "data timeout error\n");
-+ data->error = -ETIMEDOUT;
-+ } else {
-+ dev_dbg(&mmc->class_dev, "data FIFO error\n");
-+ data->error = -EIO;
-+ }
-+ dev_dbg(&mmc->class_dev, "bytes xfered: %u\n",
-+ data->bytes_xfered);
++ zi->child_cnt = 2;
++ zi->level = znode->level + 1;
+
-+ if (data->stop
-+ && !mci_set_stop_sent_is_completed(host))
-+ /* TODO: Check if card is still present */
-+ send_stop_cmd(host->mmc, data, 0);
++ __set_bit(DIRTY_ZNODE, &zi->flags);
++ atomic_long_inc(&c->dirty_zn_cnt);
+
-+ atmci_data_complete(host, data);
-+ }
-+ if (mci_clear_data_is_pending(host)) {
-+ mci_set_data_complete(host);
-+ data->bytes_xfered = data->blocks * data->blksz;
-+ atmci_data_complete(host, data);
-+ }
++ zi->zbranch[0].key = znode->zbranch[0].key;
++ zi->zbranch[0].znode = znode;
++ zi->zbranch[0].lnum = c->zroot.lnum;
++ zi->zbranch[0].offs = c->zroot.offs;
++ zi->zbranch[0].len = c->zroot.len;
++ zi->zbranch[1].key = zn->zbranch[0].key;
++ zi->zbranch[1].znode = zn;
++
++ c->zroot.lnum = 0;
++ c->zroot.offs = 0;
++ c->zroot.len = 0;
++ c->zroot.znode = zi;
++
++ zn->parent = zi;
++ zn->iip = 1;
++ znode->parent = zi;
++ znode->iip = 0;
++
++ return 0;
+}
+
-+static void atmci_cmd_interrupt(struct mmc_host *mmc, u32 status)
-+{
-+ struct atmel_mci *host = mmc_priv(mmc);
-+ struct mmc_command *cmd = host->cmd;
++/**
++ * ubifs_tnc_add - add a node to TNC.
++ * @c: UBIFS file-system description object
++ * @key: key to add
++ * @lnum: LEB number of node
++ * @offs: node offset
++ * @len: node length
++ *
++ * This function adds a node with key @key to TNC. The node may be new or it may
++ * obsolete some existing one. Returns %0 on success or negative error code on
++ * failure.
++ */
++int ubifs_tnc_add(struct ubifs_info *c, const union ubifs_key *key, int lnum,
++ int offs, int len)
++{
++ int found, n, err = 0;
++ struct ubifs_znode *znode;
++
++ mutex_lock(&c->tnc_mutex);
++ dbg_tnc("%d:%d, len %d, key %s", lnum, offs, len, DBGKEY(key));
++ found = lookup_level0_dirty(c, key, &znode, &n);
++ if (!found) {
++ struct ubifs_zbranch zbr;
++
++ zbr.znode = NULL;
++ zbr.lnum = lnum;
++ zbr.offs = offs;
++ zbr.len = len;
++ key_copy(c, key, &zbr.key);
++ err = tnc_insert(c, znode, &zbr, n + 1);
++ } else if (found == 1) {
++ struct ubifs_zbranch *zbr = &znode->zbranch[n];
++
++ lnc_free(zbr);
++ err = ubifs_add_dirt(c, zbr->lnum, zbr->len);
++ zbr->lnum = lnum;
++ zbr->offs = offs;
++ zbr->len = len;
++ } else
++ err = found;
++ if (!err)
++ err = dbg_check_tnc(c, 0);
++ mutex_unlock(&c->tnc_mutex);
+
-+ /*
-+ * Read the response now so that we're free to send a new
-+ * command immediately.
-+ */
-+ cmd->resp[0] = mci_readl(host, RSPR);
-+ cmd->resp[1] = mci_readl(host, RSPR);
-+ cmd->resp[2] = mci_readl(host, RSPR);
-+ cmd->resp[3] = mci_readl(host, RSPR);
++ return err;
++}
+
-+ mci_writel(host, IDR, MCI_BIT(CMDRDY));
-+ host->cmd = NULL;
++/**
++ * ubifs_tnc_replace - replace a node in the TNC only if the old node is found.
++ * @c: UBIFS file-system description object
++ * @key: key to add
++ * @old_lnum: LEB number of old node
++ * @old_offs: old node offset
++ * @lnum: LEB number of node
++ * @offs: node offset
++ * @len: node length
++ *
++ * This function replaces a node with key @key in the TNC only if the old node
++ * is found. This function is called by garbage collection when node are moved.
++ * Returns %0 on success or negative error code on failure.
++ */
++int ubifs_tnc_replace(struct ubifs_info *c, const union ubifs_key *key,
++ int old_lnum, int old_offs, int lnum, int offs, int len)
++{
++ int found, n, err = 0;
++ struct ubifs_znode *znode;
++
++ mutex_lock(&c->tnc_mutex);
++ dbg_tnc("old LEB %d:%d, new LEB %d:%d, len %d, key %s", old_lnum,
++ old_offs, lnum, offs, len, DBGKEY(key));
++ found = lookup_level0_dirty(c, key, &znode, &n);
++ if (found < 0) {
++ err = found;
++ goto out_unlock;
++ }
+
-+ if (mci_stop_sent_is_complete(host)) {
-+ host->stop_status = status;
-+ mci_set_stop_pending(host);
-+ } else {
-+ struct mmc_request *mrq = host->mrq;
++ if (found == 1) {
++ struct ubifs_zbranch *zbr = &znode->zbranch[n];
++
++ found = 0;
++ if (zbr->lnum == old_lnum && zbr->offs == old_offs) {
++ lnc_free(zbr);
++ err = ubifs_add_dirt(c, zbr->lnum, zbr->len);
++ if (err)
++ goto out_unlock;
++ zbr->lnum = lnum;
++ zbr->offs = offs;
++ zbr->len = len;
++ found = 1;
++ } else if (is_hash_key(c, key)) {
++ found = resolve_collision_directly(c, key, &znode, &n,
++ old_lnum, old_offs);
++ dbg_tnc("rc returned %d, znode %p, n %d, LEB %d:%d",
++ found, znode, n, old_lnum, old_offs);
++ if (found < 0) {
++ err = found;
++ goto out_unlock;
++ }
+
-+ if (mrq->stop && mci_dma_is_complete(host)
-+ && !mci_set_stop_sent_is_completed(host))
-+ send_stop_cmd(host->mmc, mrq->data, 0);
-+ host->cmd_status = status;
-+ mci_set_cmd_pending(host);
++ if (found) {
++ /* Ensure the znode is dirtied */
++ if (znode->cnext || !ubifs_zn_dirty(znode)) {
++ znode = dirty_cow_bottom_up(c,
++ znode);
++ if (IS_ERR(znode)) {
++ err = PTR_ERR(znode);
++ goto out_unlock;
++ }
++ }
++ zbr = &znode->zbranch[n];
++ lnc_free(zbr);
++ err = ubifs_add_dirt(c, zbr->lnum,
++ zbr->len);
++ if (err)
++ goto out_unlock;
++ zbr->lnum = lnum;
++ zbr->offs = offs;
++ zbr->len = len;
++ }
++ }
+ }
+
-+ tasklet_schedule(&host->tasklet);
++ if (!found)
++ err = ubifs_add_dirt(c, lnum, len);
++
++ if (!err)
++ err = dbg_check_tnc(c, 0);
++
++out_unlock:
++ mutex_unlock(&c->tnc_mutex);
++ return err;
+}
+
-+static void atmci_xfer_complete(struct dma_request *_req)
-+{
-+ struct dma_request_sg *req = to_dma_request_sg(_req);
-+ struct atmel_mci_dma *dma;
-+ struct atmel_mci *host;
-+ struct mmc_data *data;
++/**
++ * ubifs_tnc_add_nm - add a "hashed" node to TNC.
++ * @c: UBIFS file-system description object
++ * @key: key to add
++ * @lnum: LEB number of node
++ * @offs: node offset
++ * @len: node length
++ * @nm: node name
++ *
++ * This is the same as 'ubifs_tnc_add()' but it should be used with keys which
++ * may have collisions, like directory entry keys.
++ */
++int ubifs_tnc_add_nm(struct ubifs_info *c, const union ubifs_key *key,
++ int lnum, int offs, int len, const struct qstr *nm)
++{
++ int found, n, err = 0;
++ struct ubifs_znode *znode;
++
++ mutex_lock(&c->tnc_mutex);
++ dbg_tnc("LEB %d:%d, name '%.*s', key %s", lnum, offs, nm->len, nm->name,
++ DBGKEY(key));
++ found = lookup_level0_dirty(c, key, &znode, &n);
++ if (found < 0) {
++ err = found;
++ goto out_unlock;
++ }
++
++ if (found == 1) {
++ if (c->replaying)
++ found = fallible_resolve_collision(c, key, &znode, &n,
++ nm, 1);
++ else
++ found = resolve_collision(c, key, &znode, &n, nm);
++ dbg_tnc("rc returned %d, znode %p, n %d", found, znode, n);
++ if (found < 0) {
++ err = found;
++ goto out_unlock;
++ }
++
++ /* Ensure the znode is dirtied */
++ if (znode->cnext || !ubifs_zn_dirty(znode)) {
++ znode = dirty_cow_bottom_up(c, znode);
++ if (IS_ERR(znode)) {
++ err = PTR_ERR(znode);
++ goto out_unlock;
++ }
++ }
++
++ if (found == 1) {
++ struct ubifs_zbranch *zbr = &znode->zbranch[n];
++
++ lnc_free(zbr);
++ err = ubifs_add_dirt(c, zbr->lnum, zbr->len);
++ zbr->lnum = lnum;
++ zbr->offs = offs;
++ zbr->len = len;
++ goto out_unlock;
++ }
++ }
+
-+ dma = container_of(req, struct atmel_mci_dma, req);
-+ host = container_of(dma, struct atmel_mci, dma);
-+ data = host->data;
++ if (!found) {
++ struct ubifs_zbranch zbr;
++
++ zbr.znode = NULL;
++ zbr.lnum = lnum;
++ zbr.offs = offs;
++ zbr.len = len;
++ key_copy(c, key, &zbr.key);
++ err = tnc_insert(c, znode, &zbr, n + 1);
++ if (err)
++ goto out_unlock;
++ if (c->replaying && c->replay_sqnum < c->cs_sqnum) {
++ /*
++ * This node was moved by garbage collection. We can
++ * tell because it is in the journal but it has a
++ * sequence number earlier than the last commit-start.
++ * We did not find it in the index so there may be a
++ * dangling branch still in the index. So we remove it
++ * by passing 'ubifs_tnc_remove_nm()' the same key but
++ * an unmatchable name.
++ */
++ struct qstr noname = { .len = 0, .name = "" };
+
-+ /*
-+ * This callback may be called before we see the CMDRDY
-+ * interrupt under heavy irq load (possibly caused by other
-+ * drivers) or when interrupts are disabled for a long time.
-+ */
-+ mci_set_dma_complete(host);
-+ if (data->stop && mci_cmd_is_complete(host)
-+ && !mci_set_stop_sent_is_completed(host))
-+ send_stop_cmd(host->mmc, data, 0);
++ err = dbg_check_tnc(c, 0);
++ mutex_unlock(&c->tnc_mutex);
++ if (err)
++ return err;
++ return ubifs_tnc_remove_nm(c, key, &noname);
++ }
++ }
+
-+ /*
-+ * Regardless of what the documentation says, we have to wait
-+ * for NOTBUSY even after block read operations.
-+ *
-+ * When the DMA transfer is complete, the controller may still
-+ * be reading the CRC from the card, i.e. the data transfer is
-+ * still in progress and we haven't seen all the potential
-+ * error bits yet.
-+ */
-+ mci_writel(host, IER, MCI_BIT(NOTBUSY));
++out_unlock:
++ if (!err)
++ err = dbg_check_tnc(c, 0);
++ mutex_unlock(&c->tnc_mutex);
++ return err;
+}
+
-+static void atmci_dma_error(struct dma_request *_req)
++/**
++ * tnc_delete - delete a znode form TNC.
++ * @c: UBIFS file-system description object
++ * @znode: znode to delete from
++ * @n: zbranch slot number to delete
++ *
++ * This function deletes a leaf node from @n-th slot of @znode. Returns zero in
++ * case of success and a negative error code in case of failure.
++ */
++static int tnc_delete(struct ubifs_info *c, struct ubifs_znode *znode, int n)
+{
-+ struct dma_request_sg *req = to_dma_request_sg(_req);
-+ struct atmel_mci_dma *dma;
-+ struct atmel_mci *host;
++ struct ubifs_zbranch *zbr;
++ struct ubifs_znode *zp;
++ int i, err;
+
-+ dma = container_of(req, struct atmel_mci_dma, req);
-+ host = container_of(dma, struct atmel_mci, dma);
++ /* Delete without merge for now */
++ ubifs_assert(znode->level == 0);
++ ubifs_assert(n >= 0 && n < c->fanout);
++ dbg_tnc("deleting %s", DBGKEY(&znode->zbranch[n].key));
+
-+ mci_writel(host, IDR, (MCI_BIT(NOTBUSY)
-+ | MCI_DATA_ERROR_FLAGS));
++ zbr = &znode->zbranch[n];
++ lnc_free(zbr);
+
-+ mci_set_dma_error_pending(host);
-+ tasklet_schedule(&host->tasklet);
-+}
++ err = ubifs_add_dirt(c, zbr->lnum, zbr->len);
++ if (err) {
++ dbg_dump_znode(c, znode);
++ return err;
++ }
+
-+static irqreturn_t atmci_interrupt(int irq, void *dev_id)
-+{
-+ struct mmc_host *mmc = dev_id;
-+ struct atmel_mci *host = mmc_priv(mmc);
-+ u32 status, mask, pending;
++ /* We do not "gap" zbranch slots */
++ for (i = n; i < znode->child_cnt - 1; i++)
++ znode->zbranch[i] = znode->zbranch[i + 1];
++ znode->child_cnt -= 1;
+
-+ spin_lock(&mmc->lock);
++ if (znode->child_cnt > 0)
++ return 0;
+
-+ status = mci_readl(host, SR);
-+ mask = mci_readl(host, IMR);
-+ pending = status & mask;
++ /*
++ * This was the last zbranch, we have to delete this znode from the
++ * parent.
++ */
+
+ do {
-+ if (pending & MCI_DATA_ERROR_FLAGS) {
-+ mci_writel(host, IDR, (MCI_BIT(NOTBUSY)
-+ | MCI_DATA_ERROR_FLAGS));
-+ host->data_status = status;
-+ mci_set_data_error_pending(host);
-+ tasklet_schedule(&host->tasklet);
-+ break;
-+ }
-+ if (pending & MCI_BIT(CMDRDY))
-+ atmci_cmd_interrupt(mmc, status);
-+ if (pending & MCI_BIT(NOTBUSY)) {
-+ mci_writel(host, IDR, (MCI_BIT(NOTBUSY)
-+ | MCI_DATA_ERROR_FLAGS));
-+ mci_set_data_pending(host);
-+ tasklet_schedule(&host->tasklet);
-+ }
++ ubifs_assert(!test_bit(OBSOLETE_ZNODE, &znode->flags));
++ ubifs_assert(ubifs_zn_dirty(znode));
+
-+ status = mci_readl(host, SR);
-+ mask = mci_readl(host, IMR);
-+ pending = status & mask;
-+ } while (pending);
++ zp = znode->parent;
++ n = znode->iip;
+
-+ spin_unlock(&mmc->lock);
++ atomic_long_dec(&c->dirty_zn_cnt);
+
-+ return IRQ_HANDLED;
-+}
++ err = insert_old_idx_znode(c, znode);
++ if (err)
++ return err;
+
-+static irqreturn_t atmci_detect_interrupt(int irq, void *dev_id)
-+{
-+ struct mmc_host *mmc = dev_id;
-+ struct atmel_mci *host = mmc_priv(mmc);
++ if (znode->cnext) {
++ __set_bit(OBSOLETE_ZNODE, &znode->flags);
++ atomic_long_inc(&c->clean_zn_cnt);
++ atomic_long_inc(&ubifs_clean_zn_cnt);
++ } else
++ kfree(znode);
++ znode = zp;
++ } while (znode->child_cnt == 1); /* while removing last child */
++
++ /* Remove from znode, entry n - 1 */
++ znode->child_cnt -= 1;
++ ubifs_assert(znode->level != 0);
++ for (i = n; i < znode->child_cnt; i++) {
++ znode->zbranch[i] = znode->zbranch[i + 1];
++ if (znode->zbranch[i].znode)
++ znode->zbranch[i].znode->iip = i;
++ }
+
+ /*
-+ * Disable interrupts until the pin has stabilized and check
-+ * the state then. Use mod_timer() since we may be in the
-+ * middle of the timer routine when this interrupt triggers.
++ * If this is the root and it has only 1 child then
++ * collapse the tree.
+ */
-+ disable_irq_nosync(irq);
-+ mod_timer(&host->detect_timer, jiffies + msecs_to_jiffies(20));
++ if (!znode->parent) {
++ while (znode->child_cnt == 1 && znode->level != 0) {
++ zp = znode;
++ zbr = &znode->zbranch[0];
++ znode = get_znode(c, znode, 0);
++ if (IS_ERR(znode))
++ return PTR_ERR(znode);
++ znode = dirty_cow_znode(c, zbr);
++ if (IS_ERR(znode))
++ return PTR_ERR(znode);
++ znode->parent = NULL;
++ znode->iip = 0;
++ if (c->zroot.len) {
++ err = insert_old_idx(c, c->zroot.lnum,
++ c->zroot.offs);
++ if (err)
++ return err;
++ }
++ c->zroot.lnum = zbr->lnum;
++ c->zroot.offs = zbr->offs;
++ c->zroot.len = zbr->len;
++ c->zroot.znode = znode;
++ ubifs_assert(!test_bit(OBSOLETE_ZNODE,
++ &zp->flags));
++ ubifs_assert(test_bit(DIRTY_ZNODE, &zp->flags));
++ atomic_long_dec(&c->dirty_zn_cnt);
++
++ if (zp->cnext) {
++ __set_bit(OBSOLETE_ZNODE, &zp->flags);
++ atomic_long_inc(&c->clean_zn_cnt);
++ atomic_long_inc(&ubifs_clean_zn_cnt);
++ } else
++ kfree(zp);
++ }
++ }
+
-+ return IRQ_HANDLED;
++ return 0;
+}
+
-+static int __devinit atmci_probe(struct platform_device *pdev)
++/**
++ * ubifs_tnc_remove - remove an index entry of a node.
++ * @c: UBIFS file-system description object
++ * @key: key of node
++ *
++ * Returns %0 on success or negative error code on failure.
++ */
++int ubifs_tnc_remove(struct ubifs_info *c, const union ubifs_key *key)
+{
-+ struct mci_platform_data *board;
-+ struct atmel_mci *host;
-+ struct mmc_host *mmc;
-+ struct resource *regs;
-+ int irq;
-+ int ret;
++ int found, n, err = 0;
++ struct ubifs_znode *znode;
+
-+ regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-+ if (!regs)
-+ return -ENXIO;
-+ irq = platform_get_irq(pdev, 0);
-+ if (irq < 0)
-+ return irq;
++ mutex_lock(&c->tnc_mutex);
++ dbg_tnc("key %s", DBGKEY(key));
++ found = lookup_level0_dirty(c, key, &znode, &n);
++ if (found < 0) {
++ err = found;
++ goto out_unlock;
++ }
++ if (found == 1)
++ err = tnc_delete(c, znode, n);
++ if (!err)
++ err = dbg_check_tnc(c, 0);
+
-+ board = pdev->dev.platform_data;
++out_unlock:
++ mutex_unlock(&c->tnc_mutex);
++ return err;
++}
+
-+ mmc = mmc_alloc_host(sizeof(struct atmel_mci), &pdev->dev);
-+ if (!mmc)
-+ return -ENOMEM;
++/**
++ * ubifs_tnc_remove_nm - remove an index entry for a "hashed" node.
++ * @c: UBIFS file-system description object
++ * @key: key of node
++ * @nm: directory entry name
++ *
++ * Returns %0 on success or negative error code on failure.
++ */
++int ubifs_tnc_remove_nm(struct ubifs_info *c, const union ubifs_key *key,
++ const struct qstr *nm)
++{
++ int n, err;
++ struct ubifs_znode *znode;
+
-+ host = mmc_priv(mmc);
-+ host->pdev = pdev;
-+ host->mmc = mmc;
-+ if (board) {
-+ host->detect_pin = board->detect_pin;
-+ host->wp_pin = board->wp_pin;
-+ } else {
-+ host->detect_pin = -1;
-+ host->wp_pin = -1;
++ mutex_lock(&c->tnc_mutex);
++ dbg_tnc("%.*s, key %s", nm->len, nm->name, DBGKEY(key));
++ err = lookup_level0_dirty(c, key, &znode, &n);
++ if (err < 0)
++ goto out_unlock;
++
++ if (err) {
++ if (c->replaying)
++ err = fallible_resolve_collision(c, key, &znode, &n,
++ nm, 0);
++ else
++ err = resolve_collision(c, key, &znode, &n, nm);
++ dbg_tnc("rc returned %d, znode %p, n %d", err, znode, n);
++ if (err < 0)
++ goto out_unlock;
++ if (err) {
++ /* Ensure the znode is dirtied */
++ if (znode->cnext || !ubifs_zn_dirty(znode)) {
++ znode = dirty_cow_bottom_up(c, znode);
++ if (IS_ERR(znode)) {
++ err = PTR_ERR(znode);
++ goto out_unlock;
++ }
++ }
++ err = tnc_delete(c, znode, n);
++ }
+ }
+
-+ host->mck = clk_get(&pdev->dev, "mci_clk");
-+ if (IS_ERR(host->mck)) {
-+ ret = PTR_ERR(host->mck);
-+ goto out_free_host;
++out_unlock:
++ if (!err)
++ err = dbg_check_tnc(c, 0);
++ mutex_unlock(&c->tnc_mutex);
++ return err;
++}
++
++/**
++ * key_in_range - determine if a key falls within a range of keys.
++ * @c: UBIFS file-system description object
++ * @key: key to check
++ * @from_key: lowest key in range
++ * @to_key: highest key in range
++ *
++ * This function returns %1 if the key is in range and %0 otherwise.
++ */
++static int key_in_range(struct ubifs_info *c, union ubifs_key *key,
++ union ubifs_key *from_key, union ubifs_key *to_key)
++{
++ if (keys_cmp(c, key, from_key) < 0)
++ return 0;
++ if (keys_cmp(c, key, to_key) > 0)
++ return 0;
++ return 1;
++}
++
++/**
++ * ubifs_tnc_remove_range - remove index entries in range.
++ * @c: UBIFS file-system description object
++ * @from_key: lowest key to remove
++ * @to_key: highest key to remove
++ *
++ * This function removes index entries starting at @from_key and ending at
++ * @to_key. This function returns zero in case of success and a negative error
++ * code in case of failure.
++ */
++int ubifs_tnc_remove_range(struct ubifs_info *c, union ubifs_key *from_key,
++ union ubifs_key *to_key)
++{
++ int i, n, k, err = 0;
++ struct ubifs_znode *znode;
++ union ubifs_key *key;
++
++ mutex_lock(&c->tnc_mutex);
++ while (1) {
++ /* Find first level 0 znode that contains keys to remove */
++ err = ubifs_lookup_level0(c, from_key, &znode, &n);
++ if (err < 0)
++ goto out_unlock;
++
++ if (err)
++ key = from_key;
++ else {
++ err = tnc_next(c, &znode, &n);
++ if (err == -ENOENT) {
++ err = 0;
++ goto out_unlock;
++ }
++ if (err < 0)
++ goto out_unlock;
++ key = &znode->zbranch[n].key;
++ if (!key_in_range(c, key, from_key, to_key)) {
++ err = 0;
++ goto out_unlock;
++ }
++ }
++
++ /* Ensure the znode is dirtied */
++ if (znode->cnext || !ubifs_zn_dirty(znode)) {
++ znode = dirty_cow_bottom_up(c, znode);
++ if (IS_ERR(znode)) {
++ err = PTR_ERR(znode);
++ goto out_unlock;
++ }
++ }
++
++ /* Remove all keys in range except the first */
++ for (i = n + 1, k = 0; i < znode->child_cnt; i++, k++) {
++ key = &znode->zbranch[i].key;
++ if (!key_in_range(c, key, from_key, to_key))
++ break;
++ lnc_free(&znode->zbranch[i]);
++ err = ubifs_add_dirt(c, znode->zbranch[i].lnum,
++ znode->zbranch[i].len);
++ if (err) {
++ dbg_dump_znode(c, znode);
++ goto out_unlock;
++ }
++ dbg_tnc("removing %s", DBGKEY(key));
++ }
++ if (k) {
++ for (i = n + 1 + k; i < znode->child_cnt; i++)
++ znode->zbranch[i - k] = znode->zbranch[i];
++ znode->child_cnt -= k;
++ }
++
++ /* Now delete the first */
++ err = tnc_delete(c, znode, n);
++ if (err)
++ goto out_unlock;
+ }
-+ clk_enable(host->mck);
+
-+ ret = -ENOMEM;
-+ host->regs = ioremap(regs->start, regs->end - regs->start + 1);
-+ if (!host->regs)
-+ goto out_disable_clk;
++out_unlock:
++ if (!err)
++ err = dbg_check_tnc(c, 0);
++ mutex_unlock(&c->tnc_mutex);
++ return err;
++}
+
-+ host->bus_hz = clk_get_rate(host->mck);
-+ host->mapbase = regs->start;
++/**
++ * ubifs_tnc_remove_ino - remove an inode from TNC.
++ * @c: UBIFS file-system description object
++ * @inum: inode number to remove
++ *
++ * This function remove inode @inum and all the extended attributes associated
++ * with the anode from TNC and returns zero in case of success or a negative
++ * error code in case of failure.
++ */
++int ubifs_tnc_remove_ino(struct ubifs_info *c, ino_t inum)
++{
++ union ubifs_key key1, key2;
++ struct ubifs_dent_node *xent, *pxent = NULL;
++ struct qstr nm = { .name = NULL };
+
-+ mmc->ops = &atmci_ops;
-+ mmc->f_min = (host->bus_hz + 511) / 512;
-+ mmc->f_max = min((unsigned int)(host->bus_hz / 2), fmax);
-+ mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34;
-+ mmc->caps |= MMC_CAP_4_BIT_DATA;
++ dbg_tnc("ino %lu", inum);
+
-+ tasklet_init(&host->tasklet, atmci_tasklet_func, (unsigned long)mmc);
++ /*
++ * Walk all extended attribute entries and remove them together with
++ * corresponding extended attribute inodes.
++ */
++ lowest_xent_key(c, &key1, inum);
++ while (1) {
++ ino_t xattr_inum;
++ int err;
++
++ xent = ubifs_tnc_next_ent(c, &key1, &nm);
++ if (IS_ERR(xent)) {
++ err = PTR_ERR(xent);
++ if (err == -ENOENT)
++ break;
++ return err;
++ }
+
-+ ret = request_irq(irq, atmci_interrupt, 0, "mmci", mmc);
-+ if (ret)
-+ goto out_unmap;
++ xattr_inum = le64_to_cpu(xent->inum);
++ dbg_tnc("xent '%s', ino %lu", xent->name, xattr_inum);
+
-+ /* Assume card is present if we don't have a detect pin */
-+ host->present = 1;
-+ if (host->detect_pin >= 0) {
-+ if (gpio_request(host->detect_pin, "mmc_detect")) {
-+ dev_dbg(&mmc->class_dev, "no detect pin available\n");
-+ host->detect_pin = -1;
-+ } else {
-+ host->present = !gpio_get_value(host->detect_pin);
++ nm.name = xent->name;
++ nm.len = le16_to_cpu(xent->nlen);
++ err = ubifs_tnc_remove_nm(c, &key1, &nm);
++ if (err) {
++ kfree(xent);
++ return err;
+ }
-+ }
-+ if (host->wp_pin >= 0) {
-+ if (gpio_request(host->wp_pin, "mmc_wp")) {
-+ dev_dbg(&mmc->class_dev, "no WP pin available\n");
-+ host->wp_pin = -1;
++
++ lowest_ino_key(c, &key1, xattr_inum);
++ highest_ino_key(c, &key2, xattr_inum);
++ err = ubifs_tnc_remove_range(c, &key1, &key2);
++ if (err) {
++ kfree(xent);
++ return err;
+ }
-+ }
+
-+ /* TODO: Get this information from platform data */
-+ ret = -ENOMEM;
-+ host->dma.req.req.dmac = find_dma_controller(0);
-+ if (!host->dma.req.req.dmac) {
-+ dev_dbg(&mmc->class_dev, "no DMA controller available\n");
-+ goto out_free_irq;
-+ }
-+ ret = dma_alloc_channel(host->dma.req.req.dmac);
-+ if (ret < 0) {
-+ dev_dbg(&mmc->class_dev, "unable to allocate DMA channel\n");
-+ goto out_free_irq;
++ kfree(pxent);
++ pxent = xent;
++ key_read(c, &xent->key, &key1);
+ }
-+ host->dma.req.req.channel = ret;
-+ host->dma.req.width = DMA_WIDTH_32BIT;
-+ host->dma.req.req.xfer_complete = atmci_xfer_complete;
-+ host->dma.req.req.block_complete = NULL; // atmci_block_complete;
-+ host->dma.req.req.error = atmci_dma_error;
-+ host->dma.rx_periph_id = 0;
-+ host->dma.tx_periph_id = 1;
-+
-+ mci_writel(host, CR, MCI_BIT(SWRST));
-+ mci_writel(host, IDR, ~0UL);
+
-+ platform_set_drvdata(pdev, host);
++ kfree(pxent);
++ lowest_ino_key(c, &key1, inum);
++ highest_ino_key(c, &key2, inum);
+
-+ mmc_add_host(mmc);
++ return ubifs_tnc_remove_range(c, &key1, &key2);
++}
+
-+ if (host->detect_pin >= 0) {
-+ setup_timer(&host->detect_timer, atmci_detect_change,
-+ (unsigned long)host);
++/**
++ * ubifs_tnc_next_ent - walk directory or extended attribute entries.
++ * @c: UBIFS file-system description object
++ * @key: key of last entry
++ * @nm: name of last entry found or %NULL
++ *
++ * This function finds and reads the next directory or extended attribute entry
++ * after the given key (@key) if there is one. @nm is used to resolve
++ * collisions.
++ *
++ * If the name of the current entry is not known and only the key is known,
++ * @nm->name has to be %NULL. In this case the semantics of this function is a
++ * little bit different and it returns the entry corresponding to this key, not
++ * the next one. If the key was not found, the closest "right" entry is
++ * returned.
++ *
++ * If the fist entry has to be found, @key has to contain the lowest possible
++ * key value for this inode and @name has to be %NULL.
++ *
++ * This function returns the found directory or extended attribute entry node
++ * in case of success, %-ENOENT is returned if no entry was found, and a
++ * negative error code is returned in case of failure.
++ */
++struct ubifs_dent_node *ubifs_tnc_next_ent(struct ubifs_info *c,
++ union ubifs_key *key,
++ const struct qstr *nm)
++{
++ int n, err, type = key_type(c, key);
++ struct ubifs_znode *znode;
++ struct ubifs_dent_node *dent;
++ struct ubifs_zbranch *zbr;
++ union ubifs_key *dkey;
++
++ dbg_tnc("%s %s", nm->name ? (char *)nm->name : "(lowest)", DBGKEY(key));
++ ubifs_assert(is_hash_key(c, key));
++
++ mutex_lock(&c->tnc_mutex);
++ err = ubifs_lookup_level0(c, key, &znode, &n);
++ if (unlikely(err < 0))
++ goto out_unlock;
++
++ if (nm->name) {
++ if (err) {
++ /* Handle collisions */
++ err = resolve_collision(c, key, &znode, &n, nm);
++ dbg_tnc("rc returned %d, znode %p, n %d",
++ err, znode, n);
++ if (unlikely(err < 0))
++ goto out_unlock;
++ }
+
-+ ret = request_irq(gpio_to_irq(host->detect_pin),
-+ atmci_detect_interrupt,
-+ IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING,
-+ DRIVER_NAME, mmc);
-+ if (ret) {
-+ dev_dbg(&mmc->class_dev,
-+ "could not request IRQ %d for detect pin\n",
-+ gpio_to_irq(host->detect_pin));
-+ gpio_free(host->detect_pin);
-+ host->detect_pin = -1;
++ /* Now find next entry */
++ err = tnc_next(c, &znode, &n);
++ if (unlikely(err))
++ goto out_unlock;
++ } else {
++ /*
++ * The full name of the entry was not given, in which case the
++ * behavior of this function is a little different and it
++ * returns current entry, not the next one.
++ */
++ if (!err) {
++ /*
++ * However, the given key does not exist in the TNC
++ * tree and @znode/@n variables contain the closest
++ * "preceding" element. Switch to the next one.
++ */
++ err = tnc_next(c, &znode, &n);
++ if (err)
++ goto out_unlock;
+ }
+ }
+
-+ dev_info(&mmc->class_dev, "Atmel MCI controller at 0x%08lx irq %d\n",
-+ host->mapbase, irq);
++ zbr = &znode->zbranch[n];
++ dent = kmalloc(zbr->len, GFP_NOFS);
++ if (unlikely(!dent)) {
++ err = -ENOMEM;
++ goto out_unlock;
++ }
+
-+ atmci_init_debugfs(host);
++ /*
++ * The above 'tnc_next()' call could lead us to the next inode, check
++ * this.
++ */
++ dkey = &zbr->key;
++ if (key_inum(c, dkey) != key_inum(c, key) ||
++ key_type(c, dkey) != type) {
++ err = -ENOENT;
++ goto out_free;
++ }
+
-+ return 0;
++ err = tnc_read_node_nm(c, zbr, dent);
++ if (unlikely(err))
++ goto out_free;
+
-+out_free_irq:
-+ if (host->detect_pin >= 0)
-+ gpio_free(host->detect_pin);
-+ if (host->wp_pin >= 0)
-+ gpio_free(host->wp_pin);
-+ free_irq(irq, mmc);
-+out_unmap:
-+ iounmap(host->regs);
-+out_disable_clk:
-+ clk_disable(host->mck);
-+ clk_put(host->mck);
-+out_free_host:
-+ mmc_free_host(mmc);
-+ return ret;
++ mutex_unlock(&c->tnc_mutex);
++ return dent;
++
++out_free:
++ kfree(dent);
++out_unlock:
++ mutex_unlock(&c->tnc_mutex);
++ return ERR_PTR(err);
+}
+
-+static int __devexit atmci_remove(struct platform_device *pdev)
++/**
++ * tnc_destroy_cnext - destroy left-over obsolete znodes from a failed commit.
++ * @c: UBIFS file-system description object
++ *
++ * Destroy left-over obsolete znodes from a failed commit.
++ */
++static void tnc_destroy_cnext(struct ubifs_info *c)
+{
-+ struct atmel_mci *host = platform_get_drvdata(pdev);
++ struct ubifs_znode *cnext;
+
-+ platform_set_drvdata(pdev, NULL);
++ if (!c->cnext)
++ return;
++ ubifs_assert(c->cmt_state == COMMIT_BROKEN);
++ cnext = c->cnext;
++ do {
++ struct ubifs_znode *znode = cnext;
+
-+ if (host) {
-+ atmci_cleanup_debugfs(host);
++ cnext = cnext->cnext;
++ if (test_bit(OBSOLETE_ZNODE, &znode->flags))
++ kfree(znode);
++ } while (cnext && cnext != c->cnext);
++}
+
-+ if (host->detect_pin >= 0) {
-+ int pin = host->detect_pin;
++/**
++ * ubifs_tnc_close - close TNC subsystem and free all related resources.
++ * @c: UBIFS file-system description object
++ */
++void ubifs_tnc_close(struct ubifs_info *c)
++{
++ long clean_freed;
+
-+ /* Make sure our timer doesn't enable the interrupt */
-+ host->detect_pin = -1;
-+ smp_wmb();
++ tnc_destroy_cnext(c);
++ if (c->zroot.znode) {
++ clean_freed = ubifs_destroy_tnc_subtree(c->zroot.znode);
++ atomic_long_sub(clean_freed, &ubifs_clean_zn_cnt);
++ }
++ kfree(c->gap_lebs);
++ kfree(c->ilebs);
++ destroy_old_idx(c);
++}
+
-+ free_irq(gpio_to_irq(pin), host->mmc);
-+ del_timer_sync(&host->detect_timer);
-+ cancel_delayed_work(&host->mmc->detect);
-+ gpio_free(pin);
++/**
++ * left_znode - get the znode to the left.
++ * @c: UBIFS file-system description object
++ * @znode: znode
++ *
++ * This function returns a pointer to the znode to the left of @znode or NULL if
++ * there is not one. A negative error code is returned on failure.
++ */
++static struct ubifs_znode *left_znode(struct ubifs_info *c,
++ struct ubifs_znode *znode)
++{
++ int level = znode->level;
++
++ while (1) {
++ int n = znode->iip - 1;
++
++ /* Go up until we can go left */
++ znode = znode->parent;
++ if (!znode)
++ return NULL;
++ if (n >= 0) {
++ /* Now go down the rightmost branch to 'level' */
++ znode = get_znode(c, znode, n);
++ if (IS_ERR(znode))
++ return znode;
++ while (znode->level != level) {
++ n = znode->child_cnt - 1;
++ znode = get_znode(c, znode, n);
++ if (IS_ERR(znode))
++ return znode;
++ }
++ break;
+ }
++ }
++ return znode;
++}
+
-+ mmc_remove_host(host->mmc);
++/**
++ * right_znode - get the znode to the right.
++ * @c: UBIFS file-system description object
++ * @znode: znode
++ *
++ * This function returns a pointer to the znode to the right of @znode or NULL
++ * if there is not one. A negative error code is returned on failure.
++ */
++static struct ubifs_znode *right_znode(struct ubifs_info *c,
++ struct ubifs_znode *znode)
++{
++ int level = znode->level;
++
++ while (1) {
++ int n = znode->iip + 1;
++
++ /* Go up until we can go right */
++ znode = znode->parent;
++ if (!znode)
++ return NULL;
++ if (n < znode->child_cnt) {
++ /* Now go down the leftmost branch to 'level' */
++ znode = get_znode(c, znode, n);
++ if (IS_ERR(znode))
++ return znode;
++ while (znode->level != level) {
++ znode = get_znode(c, znode, 0);
++ if (IS_ERR(znode))
++ return znode;
++ }
++ break;
++ }
++ }
++ return znode;
++}
+
-+ mci_writel(host, IDR, ~0UL);
-+ mci_writel(host, CR, MCI_BIT(MCIDIS));
-+ mci_readl(host, SR);
++/**
++ * lookup_znode - find a particular indexing node from TNC.
++ * @c: UBIFS file-system description object
++ * @key: index node key to lookup
++ * @level: index node level
++ * @lnum: index node LEB number
++ * @offs: index node offset
++ *
++ * This function searches an indexing node by its first key @key and its
++ * address @lnum:@offs. It looks up the indexing tree by pulling all indexing
++ * nodes it traverses to TNC. This function is called fro indexing nodes which
++ * were found on the media by scanning, for example when garbage-collecting or
++ * when doing in-the-gaps commit. This means that the indexing node which is
++ * looked for does not have to have exactly the same leftmost key @key, because
++ * the leftmost key may have been changed, in which case TNC will contain a
++ * dirty znode which still refers the same @lnum:@offs. This function is clever
++ * enough to recognize such indexing nodes.
++ *
++ * Note, if a znode was deleted or changed too much, then this function will
++ * not find it. For situations like this UBIFS has the old index RB-tree
++ * (indexed by @lnum:@offs).
++ *
++ * This function returns a pointer to the znode found or %NULL if it is not
++ * found. A negative error code is returned on failure.
++ */
++static struct ubifs_znode *lookup_znode(struct ubifs_info *c,
++ union ubifs_key *key, int level,
++ int lnum, int offs)
++{
++ struct ubifs_znode *znode, *zn;
++ int n, nn;
+
-+ dma_release_channel(host->dma.req.req.dmac,
-+ host->dma.req.req.channel);
++ /*
++ * The arguments have probably been read off flash, so don't assume
++ * they are valid.
++ */
++ if (level < 0)
++ return ERR_PTR(-EINVAL);
++
++ /* Get the root znode */
++ znode = c->zroot.znode;
++ if (!znode) {
++ znode = ubifs_load_znode(c, &c->zroot, NULL, 0);
++ if (IS_ERR(znode))
++ return znode;
++ }
++ /* Check if it is the one we are looking for */
++ if (c->zroot.lnum == lnum && c->zroot.offs == offs)
++ return znode;
++ /* Descend to the parent level i.e. (level + 1) */
++ if (level >= znode->level)
++ return NULL;
++ while (1) {
++ ubifs_search_zbranch(c, znode, key, &n);
++ if (n < 0) {
++ /*
++ * We reached a znode where the leftmost key is greater
++ * than the key we are searching for. This is the same
++ * situation as the one described in a huge comment at
++ * the end of the 'ubifs_lookup_level0()' function. And
++ * for exactly the same reasons we have to try to look
++ * left before giving up.
++ */
++ znode = left_znode(c, znode);
++ if (!znode)
++ return NULL;
++ if (IS_ERR(znode))
++ return znode;
++ ubifs_search_zbranch(c, znode, key, &n);
++ ubifs_assert(n >= 0);
++ }
++ if (znode->level == level + 1)
++ break;
++ znode = get_znode(c, znode, n);
++ if (IS_ERR(znode))
++ return znode;
++ }
++ /* Check if the child is the one we are looking for */
++ if (znode->zbranch[n].lnum == lnum && znode->zbranch[n].offs == offs)
++ return get_znode(c, znode, n);
++ /* If the key is unique, there is nowhere else to look */
++ if (!is_hash_key(c, key))
++ return NULL;
++ /*
++ * The key is not unique and so may be also in the znodes to either
++ * side.
++ */
++ zn = znode;
++ nn = n;
++ /* Look left */
++ while (1) {
++ /* Move one branch to the left */
++ if (n)
++ n -= 1;
++ else {
++ znode = left_znode(c, znode);
++ if (!znode)
++ break;
++ if (IS_ERR(znode))
++ return znode;
++ n = znode->child_cnt - 1;
++ }
++ /* Check it */
++ if (znode->zbranch[n].lnum == lnum &&
++ znode->zbranch[n].offs == offs)
++ return get_znode(c, znode, n);
++ /* Stop if the key is less than the one we are looking for */
++ if (keys_cmp(c, &znode->zbranch[n].key, key) < 0)
++ break;
++ }
++ /* Back to the middle */
++ znode = zn;
++ n = nn;
++ /* Look right */
++ while (1) {
++ /* Move one branch to the right */
++ if (++n >= znode->child_cnt) {
++ znode = right_znode(c, znode);
++ if (!znode)
++ break;
++ if (IS_ERR(znode))
++ return znode;
++ n = 0;
++ }
++ /* Check it */
++ if (znode->zbranch[n].lnum == lnum &&
++ znode->zbranch[n].offs == offs)
++ return get_znode(c, znode, n);
++ /* Stop if the key is greater than the one we are looking for */
++ if (keys_cmp(c, &znode->zbranch[n].key, key) > 0)
++ break;
++ }
++ return NULL;
++}
+
-+ if (host->wp_pin >= 0)
-+ gpio_free(host->wp_pin);
++/**
++ * is_idx_node_in_tnc - determine if an index node is in the TNC.
++ * @c: UBIFS file-system description object
++ * @key: key of index node
++ * @level: index node level
++ * @lnum: LEB number of index node
++ * @offs: offset of index node
++ *
++ * This function returns %0 if the index node is not referred to in the TNC, %1
++ * if the index node is referred to in the TNC and the corresponding znode is
++ * dirty, %2 if an index node is referred to in the TNC and the corresponding
++ * znode is clean, and a negative error code in case of failure.
++ *
++ * Note, the @key argument has to be the key of the first child. Also note,
++ * this function relies on the fact that 0:0 is never a valid LEB number and
++ * offset for a main-area node.
++ */
++int is_idx_node_in_tnc(struct ubifs_info *c, union ubifs_key *key, int level,
++ int lnum, int offs)
++{
++ struct ubifs_znode *znode;
+
-+ free_irq(platform_get_irq(pdev, 0), host->mmc);
-+ iounmap(host->regs);
++ znode = lookup_znode(c, key, level, lnum, offs);
++ if (!znode)
++ return 0;
++ if (IS_ERR(znode))
++ return PTR_ERR(znode);
+
-+ clk_disable(host->mck);
-+ clk_put(host->mck);
++ return ubifs_zn_dirty(znode) ? 1 : 2;
++}
+
-+ mmc_free_host(host->mmc);
++/**
++ * is_leaf_node_in_tnc - determine if a non-indexing not is in the TNC.
++ * @c: UBIFS file-system description object
++ * @key: node key
++ * @lnum: node LEB number
++ * @offs: node offset
++ *
++ * This function returns %1 if the node is referred to in the TNC, %0 if it is
++ * not, and a negative error code in case of failure.
++ *
++ * Note, this function relies on the fact that 0:0 is never a valid LEB number
++ * and offset for a main-area node.
++ */
++static int is_leaf_node_in_tnc(struct ubifs_info *c, union ubifs_key *key,
++ int lnum, int offs)
++{
++ struct ubifs_zbranch *zbr;
++ struct ubifs_znode *znode, *zn;
++ int n, found, err, nn;
++ const int unique = !is_hash_key(c, key);
++
++ found = ubifs_lookup_level0(c, key, &znode, &n);
++ if (found < 0)
++ return found; /* Error code */
++ if (!found)
++ return 0;
++ zbr = &znode->zbranch[n];
++ if (lnum == zbr->lnum && offs == zbr->offs)
++ return 1; /* Found it */
++ if (unique)
++ return 0;
++ /*
++ * Because the key is not unique, we have to look left
++ * and right as well
++ */
++ zn = znode;
++ nn = n;
++ /* Look left */
++ while (1) {
++ err = tnc_prev(c, &znode, &n);
++ if (err == -ENOENT)
++ break;
++ if (err)
++ return err;
++ if (keys_cmp(c, key, &znode->zbranch[n].key))
++ break;
++ zbr = &znode->zbranch[n];
++ if (lnum == zbr->lnum && offs == zbr->offs)
++ return 1; /* Found it */
++ }
++ /* Look right */
++ znode = zn;
++ n = nn;
++ while (1) {
++ err = tnc_next(c, &znode, &n);
++ if (err) {
++ if (err == -ENOENT)
++ return 0;
++ return err;
++ }
++ if (keys_cmp(c, key, &znode->zbranch[n].key))
++ break;
++ zbr = &znode->zbranch[n];
++ if (lnum == zbr->lnum && offs == zbr->offs)
++ return 1; /* Found it */
+ }
+ return 0;
+}
+
-+static struct platform_driver atmci_driver = {
-+ .probe = atmci_probe,
-+ .remove = __devexit_p(atmci_remove),
-+ .driver = {
-+ .name = DRIVER_NAME,
-+ },
-+};
-+
-+static int __init atmci_init(void)
++/**
++ * ubifs_tnc_has_node - determine whether a node is in the TNC.
++ * @c: UBIFS file-system description object
++ * @key: node key
++ * @level: index node level (if it is an index node)
++ * @lnum: node LEB number
++ * @offs: node offset
++ * @is_idx: non-zero if the node is an index node
++ *
++ * This function returns %1 if the node is in the TNC, %0 if it is not, and a
++ * negative error code in case of failure. For index nodes, @key has to be the
++ * key of the first child. An index node is considered to be in the TNC only if
++ * the corresponding znode is clean or has not been loaded.
++ */
++int ubifs_tnc_has_node(struct ubifs_info *c, union ubifs_key *key, int level,
++ int lnum, int offs, int is_idx)
+{
-+ return platform_driver_register(&atmci_driver);
-+}
++ int err;
+
-+static void __exit atmci_exit(void)
-+{
-+ platform_driver_unregister(&atmci_driver);
++ mutex_lock(&c->tnc_mutex);
++ if (is_idx) {
++ err = is_idx_node_in_tnc(c, key, level, lnum, offs);
++ if (err < 0)
++ goto out_unlock;
++ if (err == 1)
++ /* The index node was found but it was dirty */
++ err = 0;
++ else if (err == 2)
++ /* The index node was found and it was clean */
++ err = 1;
++ else
++ BUG_ON(err != 0);
++ } else
++ err = is_leaf_node_in_tnc(c, key, lnum, offs);
++
++out_unlock:
++ mutex_unlock(&c->tnc_mutex);
++ return err;
+}
+
-+module_init(atmci_init);
-+module_exit(atmci_exit);
++/**
++ * ubifs_dirty_idx_node - dirty an index node.
++ * @c: UBIFS file-system description object
++ * @key: index node key
++ * @level: index node level
++ * @lnum: index node LEB number
++ * @offs: index node offset
++ *
++ * This function loads and dirties an index node so that it can be garbage
++ * collected. The @key argument has to be the key of the first child. This
++ * function relies on the fact that 0:0 is never a valid LEB number and offset
++ * for a main-area node. Returns %0 on success and a negative error code on
++ * failure.
++ */
++int ubifs_dirty_idx_node(struct ubifs_info *c, union ubifs_key *key, int level,
++ int lnum, int offs)
++{
++ struct ubifs_znode *znode;
++ int err = 0;
++
++ mutex_lock(&c->tnc_mutex);
++ znode = lookup_znode(c, key, level, lnum, offs);
++ if (!znode)
++ goto out_unlock;
++ if (IS_ERR(znode)) {
++ err = PTR_ERR(znode);
++ goto out_unlock;
++ }
++ znode = dirty_cow_bottom_up(c, znode);
++ if (IS_ERR(znode)) {
++ err = PTR_ERR(znode);
++ goto out_unlock;
++ }
+
-+MODULE_DESCRIPTION("Atmel Multimedia Card Interface driver");
-+MODULE_LICENSE("GPL");
---- /dev/null
-+++ b/drivers/mmc/host/atmel-mci.h
-@@ -0,0 +1,192 @@
++out_unlock:
++ mutex_unlock(&c->tnc_mutex);
++ return err;
++}
+diff --exclude=.git -urN linux-2.6.25.6/fs/ubifs/tnc_commit.c avr32-2.6/fs/ubifs/tnc_commit.c
+--- linux-2.6.25.6/fs/ubifs/tnc_commit.c 1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/fs/ubifs/tnc_commit.c 2008-06-12 15:09:45.603817614 +0200
+@@ -0,0 +1,1105 @@
+/*
-+ * Atmel MultiMedia Card Interface driver
++ * This file is part of UBIFS.
+ *
-+ * Copyright (C) 2004-2006 Atmel Corporation
++ * Copyright (C) 2006-2008 Nokia Corporation.
+ *
-+ * This program is free software; you can redistribute it and/or modify
-+ * it under the terms of the GNU General Public License version 2 as
-+ * published by the Free Software Foundation.
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published by
++ * the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but WITHOUT
++ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
++ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
++ * more details.
++ *
++ * You should have received a copy of the GNU General Public License along with
++ * this program; if not, write to the Free Software Foundation, Inc., 51
++ * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
++ *
++ * Authors: Adrian Hunter
++ * Artem Bityutskiy (Битюцкий Артём)
+ */
-+#ifndef __DRIVERS_MMC_ATMEL_MCI_H__
-+#define __DRIVERS_MMC_ATMEL_MCI_H__
-+
-+/* MCI register offsets */
-+#define MCI_CR 0x0000
-+#define MCI_MR 0x0004
-+#define MCI_DTOR 0x0008
-+#define MCI_SDCR 0x000c
-+#define MCI_ARGR 0x0010
-+#define MCI_CMDR 0x0014
-+#define MCI_BLKR 0x0018
-+#define MCI_RSPR 0x0020
-+#define MCI_RSPR1 0x0024
-+#define MCI_RSPR2 0x0028
-+#define MCI_RSPR3 0x002c
-+#define MCI_RDR 0x0030
-+#define MCI_TDR 0x0034
-+#define MCI_SR 0x0040
-+#define MCI_IER 0x0044
-+#define MCI_IDR 0x0048
-+#define MCI_IMR 0x004c
-+
-+/* Bitfields in CR */
-+#define MCI_MCIEN_OFFSET 0
-+#define MCI_MCIEN_SIZE 1
-+#define MCI_MCIDIS_OFFSET 1
-+#define MCI_MCIDIS_SIZE 1
-+#define MCI_PWSEN_OFFSET 2
-+#define MCI_PWSEN_SIZE 1
-+#define MCI_PWSDIS_OFFSET 3
-+#define MCI_PWSDIS_SIZE 1
-+#define MCI_SWRST_OFFSET 7
-+#define MCI_SWRST_SIZE 1
-+
-+/* Bitfields in MR */
-+#define MCI_CLKDIV_OFFSET 0
-+#define MCI_CLKDIV_SIZE 8
-+#define MCI_PWSDIV_OFFSET 8
-+#define MCI_PWSDIV_SIZE 3
-+#define MCI_RDPROOF_OFFSET 11
-+#define MCI_RDPROOF_SIZE 1
-+#define MCI_WRPROOF_OFFSET 12
-+#define MCI_WRPROOF_SIZE 1
-+#define MCI_DMAPADV_OFFSET 14
-+#define MCI_DMAPADV_SIZE 1
-+#define MCI_BLKLEN_OFFSET 16
-+#define MCI_BLKLEN_SIZE 16
-+
-+/* Bitfields in DTOR */
-+#define MCI_DTOCYC_OFFSET 0
-+#define MCI_DTOCYC_SIZE 4
-+#define MCI_DTOMUL_OFFSET 4
-+#define MCI_DTOMUL_SIZE 3
-+
-+/* Bitfields in SDCR */
-+#define MCI_SDCSEL_OFFSET 0
-+#define MCI_SDCSEL_SIZE 4
-+#define MCI_SDCBUS_OFFSET 7
-+#define MCI_SDCBUS_SIZE 1
+
-+/* Bitfields in ARGR */
-+#define MCI_ARG_OFFSET 0
-+#define MCI_ARG_SIZE 32
++/* This file implements TNC functions for committing */
+
-+/* Bitfields in CMDR */
-+#define MCI_CMDNB_OFFSET 0
-+#define MCI_CMDNB_SIZE 6
-+#define MCI_RSPTYP_OFFSET 6
-+#define MCI_RSPTYP_SIZE 2
-+#define MCI_SPCMD_OFFSET 8
-+#define MCI_SPCMD_SIZE 3
-+#define MCI_OPDCMD_OFFSET 11
-+#define MCI_OPDCMD_SIZE 1
-+#define MCI_MAXLAT_OFFSET 12
-+#define MCI_MAXLAT_SIZE 1
-+#define MCI_TRCMD_OFFSET 16
-+#define MCI_TRCMD_SIZE 2
-+#define MCI_TRDIR_OFFSET 18
-+#define MCI_TRDIR_SIZE 1
-+#define MCI_TRTYP_OFFSET 19
-+#define MCI_TRTYP_SIZE 2
++#include "ubifs.h"
+
-+/* Bitfields in BLKR */
-+#define MCI_BCNT_OFFSET 0
-+#define MCI_BCNT_SIZE 16
++/**
++ * make_idx_node - make an index node for fill-the-gaps method of TNC commit.
++ * @c: UBIFS file-system description object
++ * @idx: buffer in which to place new index node
++ * @znode: znode from which to make new index node
++ * @lnum: LEB number where new index node will be written
++ * @offs: offset where new index node will be written
++ * @len: length of new index node
++ */
++static int make_idx_node(struct ubifs_info *c, struct ubifs_idx_node *idx,
++ struct ubifs_znode *znode, int lnum, int offs, int len)
++{
++ struct ubifs_znode *zp;
++ int i, err;
++
++ /* Make index node */
++ idx->ch.node_type = UBIFS_IDX_NODE;
++ idx->child_cnt = cpu_to_le16(znode->child_cnt);
++ idx->level = cpu_to_le16(znode->level);
++ for (i = 0; i < znode->child_cnt; i++) {
++ struct ubifs_branch *br = ubifs_idx_branch(c, idx, i);
++ struct ubifs_zbranch *zbr = &znode->zbranch[i];
++
++ key_write_idx(c, &zbr->key, &br->key);
++ br->lnum = cpu_to_le32(zbr->lnum);
++ br->offs = cpu_to_le32(zbr->offs);
++ br->len = cpu_to_le32(zbr->len);
++ if (!zbr->lnum || !zbr->len) {
++ ubifs_err("bad ref in znode");
++ dbg_dump_znode(c, znode);
++ if (zbr->znode)
++ dbg_dump_znode(c, zbr->znode);
++ }
++ }
++ ubifs_prepare_node(c, idx, len, 0);
+
-+/* Bitfields in RSPRn */
-+#define MCI_RSP_OFFSET 0
-+#define MCI_RSP_SIZE 32
++#ifdef CONFIG_UBIFS_FS_DEBUG
++ znode->lnum = lnum;
++ znode->offs = offs;
++ znode->len = len;
++#endif
+
-+/* Bitfields in SR/IER/IDR/IMR */
-+#define MCI_CMDRDY_OFFSET 0
-+#define MCI_CMDRDY_SIZE 1
-+#define MCI_RXRDY_OFFSET 1
-+#define MCI_RXRDY_SIZE 1
-+#define MCI_TXRDY_OFFSET 2
-+#define MCI_TXRDY_SIZE 1
-+#define MCI_BLKE_OFFSET 3
-+#define MCI_BLKE_SIZE 1
-+#define MCI_DTIP_OFFSET 4
-+#define MCI_DTIP_SIZE 1
-+#define MCI_NOTBUSY_OFFSET 5
-+#define MCI_NOTBUSY_SIZE 1
-+#define MCI_ENDRX_OFFSET 6
-+#define MCI_ENDRX_SIZE 1
-+#define MCI_ENDTX_OFFSET 7
-+#define MCI_ENDTX_SIZE 1
-+#define MCI_RXBUFF_OFFSET 14
-+#define MCI_RXBUFF_SIZE 1
-+#define MCI_TXBUFE_OFFSET 15
-+#define MCI_TXBUFE_SIZE 1
-+#define MCI_RINDE_OFFSET 16
-+#define MCI_RINDE_SIZE 1
-+#define MCI_RDIRE_OFFSET 17
-+#define MCI_RDIRE_SIZE 1
-+#define MCI_RCRCE_OFFSET 18
-+#define MCI_RCRCE_SIZE 1
-+#define MCI_RENDE_OFFSET 19
-+#define MCI_RENDE_SIZE 1
-+#define MCI_RTOE_OFFSET 20
-+#define MCI_RTOE_SIZE 1
-+#define MCI_DCRCE_OFFSET 21
-+#define MCI_DCRCE_SIZE 1
-+#define MCI_DTOE_OFFSET 22
-+#define MCI_DTOE_SIZE 1
-+#define MCI_OVRE_OFFSET 30
-+#define MCI_OVRE_SIZE 1
-+#define MCI_UNRE_OFFSET 31
-+#define MCI_UNRE_SIZE 1
++ err = insert_old_idx_znode(c, znode);
+
-+/* Constants for DTOMUL */
-+#define MCI_DTOMUL_1_CYCLE 0
-+#define MCI_DTOMUL_16_CYCLES 1
-+#define MCI_DTOMUL_128_CYCLES 2
-+#define MCI_DTOMUL_256_CYCLES 3
-+#define MCI_DTOMUL_1024_CYCLES 4
-+#define MCI_DTOMUL_4096_CYCLES 5
-+#define MCI_DTOMUL_65536_CYCLES 6
-+#define MCI_DTOMUL_1048576_CYCLES 7
++ /* Update the parent */
++ zp = znode->parent;
++ if (zp) {
++ struct ubifs_zbranch *zbr;
+
-+/* Constants for RSPTYP */
-+#define MCI_RSPTYP_NO_RESP 0
-+#define MCI_RSPTYP_48_BIT 1
-+#define MCI_RSPTYP_136_BIT 2
++ zbr = &zp->zbranch[znode->iip];
++ zbr->lnum = lnum;
++ zbr->offs = offs;
++ zbr->len = len;
++ } else {
++ c->zroot.lnum = lnum;
++ c->zroot.offs = offs;
++ c->zroot.len = len;
++ }
++ c->calc_idx_sz += ALIGN(len, 8);
+
-+/* Constants for SPCMD */
-+#define MCI_SPCMD_NO_SPEC_CMD 0
-+#define MCI_SPCMD_INIT_CMD 1
-+#define MCI_SPCMD_SYNC_CMD 2
-+#define MCI_SPCMD_INT_CMD 4
-+#define MCI_SPCMD_INT_RESP 5
++ atomic_long_dec(&c->dirty_zn_cnt);
+
-+/* Constants for TRCMD */
-+#define MCI_TRCMD_NO_TRANS 0
-+#define MCI_TRCMD_START_TRANS 1
-+#define MCI_TRCMD_STOP_TRANS 2
++ ubifs_assert(ubifs_zn_dirty(znode));
++ ubifs_assert(test_bit(COW_ZNODE, &znode->flags));
+
-+/* Constants for TRTYP */
-+#define MCI_TRTYP_BLOCK 0
-+#define MCI_TRTYP_MULTI_BLOCK 1
-+#define MCI_TRTYP_STREAM 2
++ __clear_bit(DIRTY_ZNODE, &znode->flags);
++ __clear_bit(COW_ZNODE, &znode->flags);
+
-+/* Bit manipulation macros */
-+#define MCI_BIT(name) \
-+ (1 << MCI_##name##_OFFSET)
-+#define MCI_BF(name,value) \
-+ (((value) & ((1 << MCI_##name##_SIZE) - 1)) \
-+ << MCI_##name##_OFFSET)
-+#define MCI_BFEXT(name,value) \
-+ (((value) >> MCI_##name##_OFFSET) \
-+ & ((1 << MCI_##name##_SIZE) - 1))
-+#define MCI_BFINS(name,value,old) \
-+ (((old) & ~(((1 << MCI_##name##_SIZE) - 1) \
-+ << MCI_##name##_OFFSET)) \
-+ | MCI_BF(name,value))
++ return err;
++}
+
-+/* Register access macros */
-+#define mci_readl(port,reg) \
-+ __raw_readl((port)->regs + MCI_##reg)
-+#define mci_writel(port,reg,value) \
-+ __raw_writel((value), (port)->regs + MCI_##reg)
++/**
++ * fill_gap - make index nodes in gaps in dirty index LEBs.
++ * @c: UBIFS file-system description object
++ * @lnum: LEB number that gap appears in
++ * @gap_start: offset of start of gap
++ * @gap_end: offset of end of gap
++ * @dirt: adds dirty space to this
++ *
++ * This function returns the number of index nodes written into the gap.
++ */
++static int fill_gap(struct ubifs_info *c, int lnum, int gap_start, int gap_end,
++ int *dirt)
++{
++ int len, gap_remains, gap_pos, written, pad_len;
+
-+#endif /* __DRIVERS_MMC_ATMEL_MCI_H__ */
---- a/drivers/mmc/host/Kconfig
-+++ b/drivers/mmc/host/Kconfig
-@@ -91,6 +91,16 @@
-
- If unsure, say N.
-
-+config MMC_ATMELMCI
-+ tristate "Atmel Multimedia Card Interface support"
-+ depends on AVR32 && MMC
-+ help
-+ This selects the Atmel Multimedia Card Interface. If you have
-+ a AT91 (ARM) or AT32 (AVR32) platform with a Multimedia Card
-+ slot, say Y or M here.
++ ubifs_assert((gap_start & 7) == 0);
++ ubifs_assert((gap_end & 7) == 0);
++ ubifs_assert(gap_end >= gap_start);
+
-+ If unsure, say N.
++ gap_remains = gap_end - gap_start;
++ if (!gap_remains)
++ return 0;
++ gap_pos = gap_start;
++ written = 0;
++ while (c->enext) {
++ len = ubifs_idx_node_sz(c, c->enext->child_cnt);
++ if (len < gap_remains) {
++ struct ubifs_znode *znode = c->enext;
++ const int alen = ALIGN(len, 8);
++ int err;
++
++ ubifs_assert(alen <= gap_remains);
++ err = make_idx_node(c, c->ileb_buf + gap_pos, znode,
++ lnum, gap_pos, len);
++ if (err)
++ return err;
++ gap_remains -= alen;
++ gap_pos += alen;
++ c->enext = znode->cnext;
++ if (c->enext == c->cnext)
++ c->enext = NULL;
++ written += 1;
++ } else
++ break;
++ }
++ if (gap_end == c->leb_size) {
++ c->ileb_len = ALIGN(gap_pos, c->min_io_size);
++ /* Pad to end of min_io_size */
++ pad_len = c->ileb_len - gap_pos;
++ } else
++ /* Pad to end of gap */
++ pad_len = gap_remains;
++ dbg_gc("LEB %d:%d to %d len %d nodes written %d wasted bytes %d",
++ lnum, gap_start, gap_end, gap_end - gap_start, written, pad_len);
++ ubifs_pad(c, c->ileb_buf + gap_pos, pad_len);
++ *dirt += pad_len;
++ return written;
++}
+
- config MMC_IMX
- tristate "Motorola i.MX Multimedia Card Interface support"
- depends on ARCH_IMX
---- a/drivers/mmc/host/Makefile
-+++ b/drivers/mmc/host/Makefile
-@@ -15,6 +15,7 @@
- obj-$(CONFIG_MMC_AU1X) += au1xmmc.o
- obj-$(CONFIG_MMC_OMAP) += omap.o
- obj-$(CONFIG_MMC_AT91) += at91_mci.o
-+obj-$(CONFIG_MMC_ATMELMCI) += atmel-mci.o
- obj-$(CONFIG_MMC_TIFM_SD) += tifm_sd.o
- obj-$(CONFIG_MMC_SPI) += mmc_spi.o
-
---- a/drivers/mtd/chips/cfi_cmdset_0001.c
-+++ b/drivers/mtd/chips/cfi_cmdset_0001.c
-@@ -50,6 +50,7 @@
- #define I82802AC 0x00ac
- #define MANUFACTURER_ST 0x0020
- #define M50LPW080 0x002F
-+#define AT49BV640D 0x02de
-
- static int cfi_intelext_read (struct mtd_info *, loff_t, size_t, size_t *, u_char *);
- static int cfi_intelext_write_words(struct mtd_info *, loff_t, size_t, size_t *, const u_char *);
-@@ -157,6 +158,47 @@
- }
- #endif
-
-+/* Atmel chips don't use the same PRI format as Intel chips */
-+static void fixup_convert_atmel_pri(struct mtd_info *mtd, void *param)
-+{
-+ struct map_info *map = mtd->priv;
-+ struct cfi_private *cfi = map->fldrv_priv;
-+ struct cfi_pri_intelext *extp = cfi->cmdset_priv;
-+ struct cfi_pri_atmel atmel_pri;
-+ uint32_t features = 0;
-+
-+ /* Reverse byteswapping */
-+ extp->FeatureSupport = cpu_to_le32(extp->FeatureSupport);
-+ extp->BlkStatusRegMask = cpu_to_le16(extp->BlkStatusRegMask);
-+ extp->ProtRegAddr = cpu_to_le16(extp->ProtRegAddr);
-+
-+ memcpy(&atmel_pri, extp, sizeof(atmel_pri));
-+ memset((char *)extp + 5, 0, sizeof(*extp) - 5);
-+
-+ printk(KERN_ERR "atmel Features: %02x\n", atmel_pri.Features);
-+
-+ if (atmel_pri.Features & 0x01) /* chip erase supported */
-+ features |= (1<<0);
-+ if (atmel_pri.Features & 0x02) /* erase suspend supported */
-+ features |= (1<<1);
-+ if (atmel_pri.Features & 0x04) /* program suspend supported */
-+ features |= (1<<2);
-+ if (atmel_pri.Features & 0x08) /* simultaneous operations supported */
-+ features |= (1<<9);
-+ if (atmel_pri.Features & 0x20) /* page mode read supported */
-+ features |= (1<<7);
-+ if (atmel_pri.Features & 0x40) /* queued erase supported */
-+ features |= (1<<4);
-+ if (atmel_pri.Features & 0x80) /* Protection bits supported */
-+ features |= (1<<6);
-+
-+ extp->FeatureSupport = features;
-+
-+ /* burst write mode not supported */
-+ cfi->cfiq->BufWriteTimeoutTyp = 0;
-+ cfi->cfiq->BufWriteTimeoutMax = 0;
-+}
-+
- #ifdef CMDSET0001_DISABLE_ERASE_SUSPEND_ON_WRITE
- /* Some Intel Strata Flash prior to FPO revision C has bugs in this area */
- static void fixup_intel_strataflash(struct mtd_info *mtd, void* param)
-@@ -234,6 +276,7 @@
- }
-
- static struct cfi_fixup cfi_fixup_table[] = {
-+ { CFI_MFR_ATMEL, CFI_ID_ANY, fixup_convert_atmel_pri, NULL },
- #ifdef CMDSET0001_DISABLE_ERASE_SUSPEND_ON_WRITE
- { CFI_MFR_ANY, CFI_ID_ANY, fixup_intel_strataflash, NULL },
- #endif
---- a/drivers/mtd/chips/cfi_cmdset_0002.c
-+++ b/drivers/mtd/chips/cfi_cmdset_0002.c
-@@ -186,6 +186,10 @@
- extp->TopBottom = 2;
- else
- extp->TopBottom = 3;
++/**
++ * find_old_idx - find an index node obsoleted since the last commit start.
++ * @c: UBIFS file-system description object
++ * @lnum: LEB number of obsoleted index node
++ * @offs: offset of obsoleted index node
++ *
++ * Returns %1 if found and %0 otherwise.
++ */
++static int find_old_idx(struct ubifs_info *c, int lnum, int offs)
++{
++ struct ubifs_old_idx *o;
++ struct rb_node *p;
++
++ p = c->old_idx.rb_node;
++ while (p) {
++ o = rb_entry(p, struct ubifs_old_idx, rb);
++ if (lnum < o->lnum)
++ p = p->rb_left;
++ else if (lnum > o->lnum)
++ p = p->rb_right;
++ else if (offs < o->offs)
++ p = p->rb_left;
++ else if (offs > o->offs)
++ p = p->rb_right;
++ else
++ return 1;
++ }
++ return 0;
++}
+
-+ /* burst write mode not supported */
-+ cfi->cfiq->BufWriteTimeoutTyp = 0;
-+ cfi->cfiq->BufWriteTimeoutMax = 0;
- }
-
- static void fixup_use_secsi(struct mtd_info *mtd, void *param)
-@@ -218,6 +222,7 @@
- }
-
- static struct cfi_fixup cfi_fixup_table[] = {
-+ { CFI_MFR_ATMEL, CFI_ID_ANY, fixup_convert_atmel_pri, NULL },
- #ifdef AMD_BOOTLOC_BUG
- { CFI_MFR_AMD, CFI_ID_ANY, fixup_amd_bootblock, NULL },
- #endif
-@@ -230,7 +235,6 @@
- #if !FORCE_WORD_WRITE
- { CFI_MFR_ANY, CFI_ID_ANY, fixup_use_write_buffers, NULL, },
- #endif
-- { CFI_MFR_ATMEL, CFI_ID_ANY, fixup_convert_atmel_pri, NULL },
- { 0, 0, NULL, NULL }
- };
- static struct cfi_fixup jedec_fixup_table[] = {
---- /dev/null
-+++ b/drivers/pcmcia/at32_cf.c
-@@ -0,0 +1,533 @@
-+/*
-+ * Driver for AVR32 Static Memory Controller: CompactFlash support
++/**
++ * is_idx_node_in_use - determine if an index node can be overwritten.
++ * @c: UBIFS file-system description object
++ * @key: key of index node
++ * @level: index node level
++ * @lnum: LEB number of index node
++ * @offs: offset of index node
+ *
-+ * Copyright (C) 2006 Atmel Norway
++ * If @key / @lnum / @offs identify an index node that was not part of the old
++ * index, then this function returns %0 (obsolete). Else if the index node was
++ * part of the old index but is now dirty %1 is returned, else if it is clean %2
++ * is returned. A negative error code is returned on failure.
++ */
++static int is_idx_node_in_use(struct ubifs_info *c, union ubifs_key *key,
++ int level, int lnum, int offs)
++{
++ int ret;
++
++ ret = is_idx_node_in_tnc(c, key, level, lnum, offs);
++ if (ret < 0)
++ return ret; /* Error code */
++ if (ret == 0)
++ if (find_old_idx(c, lnum, offs))
++ return 1;
++ return ret;
++}
++
++/**
++ * layout_leb_in_gaps - layout index nodes using in-the-gaps method.
++ * @c: UBIFS file-system description object
++ * @p: return LEB number here
+ *
-+ * This program is free software; you can redistribute it and/or
-+ * modify it under the terms of the GNU General Public License as
-+ * published by the Free Software Foundation; either version 2 of the
-+ * License, or (at your option) any later version.
++ * This function lays out new index nodes for dirty znodes using in-the-gaps
++ * method of TNC commit.
++ * This function merely puts the next znode into the next gap, making no attempt
++ * to try to maximise the number of znodes that fit.
++ * This function returns the number of index nodes written into the gaps, or a
++ * negative error code on failure.
++ */
++static int layout_leb_in_gaps(struct ubifs_info *c, int *p)
++{
++ struct ubifs_scan_leb *sleb;
++ struct ubifs_scan_node *snod;
++ int lnum, dirt = 0, gap_start, gap_end, err, written, tot_written;
++
++ tot_written = 0;
++ /* Get an index LEB with lots of obsolete index nodes */
++ lnum = ubifs_find_dirty_idx_leb(c);
++ if (lnum < 0)
++ /*
++ * There also may be dirt in the index head that could be
++ * filled, however we do not check there at present.
++ */
++ return lnum; /* Error code */
++ *p = lnum;
++ dbg_gc("LEB %d", lnum);
++ /*
++ * Scan the index LEB. We use the generic scan for this even though
++ * it is more comprehensive and less efficient than is needed for this
++ * purpose.
++ */
++ sleb = ubifs_scan(c, lnum, 0, c->ileb_buf);
++ c->ileb_len = 0;
++ if (IS_ERR(sleb))
++ return PTR_ERR(sleb);
++ gap_start = 0;
++ list_for_each_entry(snod, &sleb->nodes, list) {
++ struct ubifs_idx_node *idx;
++ int in_use, level;
++
++ ubifs_assert(snod->type == UBIFS_IDX_NODE);
++ idx = snod->node;
++ key_read(c, ubifs_idx_key(c, idx), &snod->key);
++ level = le16_to_cpu(idx->level);
++ /* Determine if the index node is in use (not obsolete) */
++ in_use = is_idx_node_in_use(c, &snod->key, level, lnum,
++ snod->offs);
++ if (in_use < 0) {
++ ubifs_scan_destroy(sleb);
++ return in_use; /* Error code */
++ }
++ if (in_use) {
++ if (in_use == 1)
++ dirt += ALIGN(snod->len, 8);
++ /*
++ * The obsolete index nodes form gaps that can be
++ * overwritten. This gap has ended because we have
++ * found an index node that is still in use
++ * i.e. not obsolete
++ */
++ gap_end = snod->offs;
++ /* Try to fill gap */
++ written = fill_gap(c, lnum, gap_start, gap_end, &dirt);
++ if (written < 0) {
++ ubifs_scan_destroy(sleb);
++ return written; /* Error code */
++ }
++ tot_written += written;
++ gap_start = ALIGN(snod->offs + snod->len, 8);
++ }
++ }
++ ubifs_scan_destroy(sleb);
++ c->ileb_len = c->leb_size;
++ gap_end = c->leb_size;
++ /* Try to fill gap */
++ written = fill_gap(c, lnum, gap_start, gap_end, &dirt);
++ if (written < 0)
++ return written; /* Error code */
++ tot_written += written;
++ if (tot_written == 0) {
++ struct ubifs_lprops lp;
++
++ dbg_gc("LEB %d wrote %d index nodes", lnum, tot_written);
++ err = ubifs_read_one_lp(c, lnum, &lp);
++ if (err)
++ return err;
++ if (lp.free == c->leb_size) {
++ /*
++ * We must have snatched this LEB from the idx_gc list
++ * so we need to correct the free and dirty space.
++ */
++ err = ubifs_change_one_lp(c, lnum,
++ c->leb_size - c->ileb_len,
++ dirt, 0, 0, 0);
++ if (err)
++ return err;
++ }
++ return 0;
++ }
++ err = ubifs_change_one_lp(c, lnum, c->leb_size - c->ileb_len, dirt,
++ 0, 0, 0);
++ if (err)
++ return err;
++ err = ubi_leb_change(c->ubi, lnum, c->ileb_buf, c->ileb_len,
++ UBI_SHORTTERM);
++ if (err) {
++ ubifs_err("ubi_leb_change failed, error %d", err);
++ return err;
++ }
++ dbg_gc("LEB %d wrote %d index nodes", lnum, tot_written);
++ return tot_written;
++}
++
++/**
++ * get_leb_cnt - calculate the number of empty LEBs needed to commit.
++ * @c: UBIFS file-system description object
++ * @cnt: number of znodes to commit
+ *
-+ * This program is distributed in the hope that it will be useful, but
-+ * WITHOUT ANY WARRANTY; without even the implied warranty of
-+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-+ * General Public License for more details.
++ * This function returns the number of empty LEBs needed to commit @cnt znodes
++ * to the current index head. The number is not exact and may be more than
++ * needed.
++ */
++static int get_leb_cnt(struct ubifs_info *c, int cnt)
++{
++ int d;
++
++ /* Assume maximum index node size (i.e. overestimate space needed) */
++ cnt -= (c->leb_size - c->ihead_offs) / c->max_idx_node_sz;
++ if (cnt < 0)
++ cnt = 0;
++ d = c->leb_size / c->max_idx_node_sz;
++ return DIV_ROUND_UP(cnt, d);
++}
++
++/**
++ * layout_in_gaps - in-the-gaps method of committing TNC.
++ * @c: UBIFS file-system description object
++ * @cnt: number of dirty znodes to commit.
+ *
-+ * You should have received a copy of the GNU General Public License
-+ * along with this program; if not, write to the Free Software
-+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
-+ * 02111-1307, USA.
++ * This function lays out new index nodes for dirty znodes using in-the-gaps
++ * method of TNC commit.
+ *
-+ * The full GNU General Public License is included in this
-+ * distribution in the file called COPYING.
++ * This function returns %0 on success and a negative error code on failure.
+ */
-+#include <linux/module.h>
-+#include <linux/kernel.h>
-+#include <linux/platform_device.h>
-+#include <linux/init.h>
-+#include <linux/device.h>
-+#include <linux/delay.h>
-+#include <linux/interrupt.h>
-+#include <linux/err.h>
-+#include <linux/clk.h>
-+#include <linux/dma-mapping.h>
-+
-+#include <pcmcia/ss.h>
++static int layout_in_gaps(struct ubifs_info *c, int cnt)
++{
++ int err, leb_needed_cnt, written, *p;
+
-+#include <asm/gpio.h>
-+#include <asm/io.h>
-+#include <asm/arch/board.h>
++ dbg_gc("%d znodes to write", cnt);
+
-+#include <asm/arch/smc.h>
++ c->gap_lebs = kmalloc(sizeof(int) * (c->lst.idx_lebs + 1), GFP_NOFS);
++ if (!c->gap_lebs)
++ return -ENOMEM;
+
-+struct at32_cf_socket {
-+ struct pcmcia_socket socket;
-+ int detect_pin;
-+ int reset_pin;
-+ int vcc_pin;
-+ int ready_pin;
-+ struct resource res_attr;
-+ struct resource res_mem;
-+ struct resource res_io;
-+ struct smc_config smc;
-+ unsigned int irq;
-+ unsigned int cf_cs;
-+ socket_state_t state;
-+ unsigned present:1;
-+};
-+#define to_at32_cf(sock) container_of(sock, struct at32_cf_socket, socket)
++ p = c->gap_lebs;
++ do {
++ ubifs_assert(p < c->gap_lebs + sizeof(int) * c->lst.idx_lebs);
++ written = layout_leb_in_gaps(c, p);
++ if (written < 0) {
++ err = written;
++ if (err == -ENOSPC) {
++ if (!dbg_force_in_the_gaps_enabled) {
++ /*
++ * Do not print scary warnings if the
++ * debugging option which forces
++ * in-the-gaps is enabled.
++ */
++ ubifs_err("out of space");
++ spin_lock(&c->space_lock);
++ dbg_dump_budg(c);
++ spin_unlock(&c->space_lock);
++ dbg_dump_lprops(c);
++ }
++ /* Try to commit anyway */
++ err = 0;
++ break;
++ }
++ kfree(c->gap_lebs);
++ c->gap_lebs = NULL;
++ return err;
++ }
++ p++;
++ cnt -= written;
++ leb_needed_cnt = get_leb_cnt(c, cnt);
++ dbg_gc("%d znodes remaining, need %d LEBs, have %d", cnt,
++ leb_needed_cnt, c->ileb_cnt);
++ } while (leb_needed_cnt > c->ileb_cnt);
++
++ *p = -1;
++ return 0;
++}
+
-+/*
-+ * We have the following memory layout relative to the base address:
-+ *
-+ * Alt IDE Mode: 00e0 0000 -> 00ff ffff
-+ * True IDE Mode: 00c0 0000 -> 00df ffff
-+ * I/O memory: 0080 0000 -> 00bf ffff
-+ * Common memory: 0040 0000 -> 007f ffff
-+ * Attribute memory: 0000 0000 -> 003f ffff
++/**
++ * layout_in_empty_space - layout index nodes in empty space.
++ * @c: UBIFS file-system description object
++ *
++ * This function lays out new index nodes for dirty znodes using empty LEBs.
++ *
++ * This function returns %0 on success and a negative error code on failure.
+ */
-+#define CF_ATTR_OFFSET 0x00000000
-+#define CF_MEM_OFFSET 0x00400000
-+#define CF_IO_OFFSET 0x00800000
-+#define CF_RES_SIZE 4096
++static int layout_in_empty_space(struct ubifs_info *c)
++{
++ struct ubifs_znode *znode, *cnext, *zp;
++ int lnum, offs, len, next_len, buf_len, buf_offs, used, avail;
++ int wlen, blen, err;
+
-+#ifdef DEBUG
++ cnext = c->enext;
++ if (!cnext)
++ return 0;
+
-+static int pc_debug;
-+module_param(pc_debug, int, 0644);
++ lnum = c->ihead_lnum;
++ buf_offs = c->ihead_offs;
+
-+static void at32_cf_debug(struct at32_cf_socket *cf, const char *func,
-+ int level, const char *fmt, ...)
-+{
-+ va_list args;
++ buf_len = ubifs_idx_node_sz(c, c->fanout);
++ buf_len = ALIGN(buf_len, c->min_io_size);
++ used = 0;
++ avail = buf_len;
+
-+ if (pc_debug > level) {
-+ printk(KERN_DEBUG "at32_cf/%u: %s: ", cf->cf_cs, func);
-+ va_start(args, fmt);
-+ vprintk(fmt, args);
-+ va_end(args);
-+ }
-+}
++ /* Ensure there is enough room for first write */
++ next_len = ubifs_idx_node_sz(c, cnext->child_cnt);
++ if (buf_offs + next_len > c->leb_size)
++ lnum = -1;
+
-+#define debug(cf, lvl, fmt, arg...) \
-+ at32_cf_debug(cf, __func__, lvl, fmt, ##arg)
++ while (1) {
++ znode = cnext;
+
-+#else
-+#define debug(cf, lvl, fmt, arg...) do { } while (0)
++ len = ubifs_idx_node_sz(c, znode->child_cnt);
++
++ /* Determine the index node position */
++ if (lnum == -1) {
++ if (c->ileb_nxt >= c->ileb_cnt) {
++ ubifs_err("out of space");
++ return -ENOSPC;
++ }
++ lnum = c->ilebs[c->ileb_nxt++];
++ buf_offs = 0;
++ used = 0;
++ avail = buf_len;
++ }
++
++ offs = buf_offs + used;
++
++#ifdef CONFIG_UBIFS_FS_DEBUG
++ znode->lnum = lnum;
++ znode->offs = offs;
++ znode->len = len;
+#endif
+
-+static inline int at32_cf_present(struct at32_cf_socket *cf)
-+{
-+ int present = 1;
++ /* Update the parent */
++ zp = znode->parent;
++ if (zp) {
++ struct ubifs_zbranch *zbr;
++ int i;
++
++ i = znode->iip;
++ zbr = &zp->zbranch[i];
++ zbr->lnum = lnum;
++ zbr->offs = offs;
++ zbr->len = len;
++ } else {
++ c->zroot.lnum = lnum;
++ c->zroot.offs = offs;
++ c->zroot.len = len;
++ }
++ c->calc_idx_sz += ALIGN(len, 8);
+
-+ /* If we don't have a detect pin, assume the card is present */
-+ if (cf->detect_pin >= 0)
-+ present = !gpio_get_value(cf->detect_pin);
++ /*
++ * Once lprops is updated, we can decrease the dirty znode count
++ * but it is easier to just do it here.
++ */
++ atomic_long_dec(&c->dirty_zn_cnt);
+
-+ return present;
-+}
++ /*
++ * Calculate the next index node length to see if there is
++ * enough room for it
++ */
++ cnext = znode->cnext;
++ if (cnext == c->cnext)
++ next_len = 0;
++ else
++ next_len = ubifs_idx_node_sz(c, cnext->child_cnt);
+
-+static irqreturn_t at32_cf_irq(int irq, void *dev_id)
-+{
-+ struct at32_cf_socket *cf = dev_id;
-+ unsigned int present;
++ if (c->min_io_size == 1) {
++ buf_offs += ALIGN(len, 8);
++ if (next_len) {
++ if (buf_offs + next_len <= c->leb_size)
++ continue;
++ err = ubifs_update_one_lp(c, lnum, 0,
++ c->leb_size - buf_offs, 0, 0);
++ if (err)
++ return err;
++ lnum = -1;
++ continue;
++ }
++ err = ubifs_update_one_lp(c, lnum,
++ c->leb_size - buf_offs, 0, 0, 0);
++ if (err)
++ return err;
++ break;
++ }
+
-+ present = at32_cf_present(cf);
-+ if (present != cf->present) {
-+ cf->present = present;
-+ debug(cf, 3, "card %s\n", present ? "present" : "gone");
-+ pcmcia_parse_events(&cf->socket, SS_DETECT);
++ /* Update buffer positions */
++ wlen = used + len;
++ used += ALIGN(len, 8);
++ avail -= ALIGN(len, 8);
++
++ if (next_len != 0 &&
++ buf_offs + used + next_len <= c->leb_size &&
++ avail > 0)
++ continue;
++
++ if (avail <= 0 && next_len &&
++ buf_offs + used + next_len <= c->leb_size)
++ blen = buf_len;
++ else
++ blen = ALIGN(wlen, c->min_io_size);
++
++ /* The buffer is full or there are no more znodes to do */
++ buf_offs += blen;
++ if (next_len) {
++ if (buf_offs + next_len > c->leb_size) {
++ err = ubifs_update_one_lp(c, lnum,
++ c->leb_size - buf_offs, blen - used,
++ 0, 0);
++ if (err)
++ return err;
++ lnum = -1;
++ }
++ used -= blen;
++ if (used < 0)
++ used = 0;
++ avail = buf_len - used;
++ continue;
++ }
++ err = ubifs_update_one_lp(c, lnum, c->leb_size - buf_offs,
++ blen - used, 0, 0);
++ if (err)
++ return err;
++ break;
+ }
+
-+ return IRQ_HANDLED;
++#ifdef CONFIG_UBIFS_FS_DEBUG
++ c->new_ihead_lnum = lnum;
++ c->new_ihead_offs = buf_offs;
++#endif
++
++ return 0;
+}
+
-+static int at32_cf_get_status(struct pcmcia_socket *sock, u_int *value)
++/**
++ * layout_commit - determine positions of index nodes to commit.
++ * @c: UBIFS file-system description object
++ * @no_space: indicates that insufficient empty LEBs were allocated
++ * @cnt: number of znodes to commit
++ *
++ * Calculate and update the positions of index nodes to commit. If there were
++ * an insufficient number of empty LEBs allocated, then index nodes are placed
++ * into the gaps created by obsolete index nodes in non-empty index LEBs. For
++ * this purpose, an obsolete index node is one that was not in the index as at
++ * the end of the last commit. To write "in-the-gaps" requires that those index
++ * LEBs are updated atomically in-place.
++ */
++static int layout_commit(struct ubifs_info *c, int no_space, int cnt)
+{
-+ struct at32_cf_socket *cf;
-+ u_int status = 0;
-+
-+ cf = container_of(sock, struct at32_cf_socket, socket);
++ int err;
+
-+ if (at32_cf_present(cf)) {
-+ /* NOTE: gpio on AP7xxx is 3.3V */
-+ status = SS_DETECT | SS_3VCARD;
-+ if (cf->ready_pin < 0 || gpio_get_value(cf->ready_pin))
-+ status |= SS_READY;
-+ if (cf->vcc_pin < 0 || gpio_get_value(cf->vcc_pin))
-+ status |= SS_POWERON;
++ if (no_space) {
++ err = layout_in_gaps(c, cnt);
++ if (err)
++ return err;
+ }
-+
-+ *value = status;
-+ return 0;
++ err = layout_in_empty_space(c);
++ return err;
+}
+
-+static int at32_cf_set_socket(struct pcmcia_socket *sock, socket_state_t *state)
++/**
++ * find_first_dirty - find first dirty znode.
++ * @znode: znode to begin searching from
++ */
++static struct ubifs_znode *find_first_dirty(struct ubifs_znode *znode)
+{
-+ struct at32_cf_socket *cf = container_of(sock, struct at32_cf_socket, socket);
++ int i, cont;
+
-+ debug(cf, 2, "mask: %s%s%s%s%s%sflags: %s%s%s%s%s%sVcc %d Vpp %d irq %d\n",
-+ (state->csc_mask==0)?"<NONE> ":"",
-+ (state->csc_mask&SS_DETECT)?"DETECT ":"",
-+ (state->csc_mask&SS_READY)?"READY ":"",
-+ (state->csc_mask&SS_BATDEAD)?"BATDEAD ":"",
-+ (state->csc_mask&SS_BATWARN)?"BATWARN ":"",
-+ (state->csc_mask&SS_STSCHG)?"STSCHG ":"",
-+ (state->flags==0)?"<NONE> ":"",
-+ (state->flags&SS_PWR_AUTO)?"PWR_AUTO ":"",
-+ (state->flags&SS_IOCARD)?"IOCARD ":"",
-+ (state->flags&SS_RESET)?"RESET ":"",
-+ (state->flags&SS_SPKR_ENA)?"SPKR_ENA ":"",
-+ (state->flags&SS_OUTPUT_ENA)?"OUTPUT_ENA ":"",
-+ state->Vcc, state->Vpp, state->io_irq);
++ if (!znode)
++ return NULL;
+
-+ /*
-+ * TODO: Allow boards to override this in case they have level
-+ * converters.
-+ */
-+ switch (state->Vcc) {
-+ case 0:
-+ if (cf->vcc_pin >= 0)
-+ gpio_set_value(cf->vcc_pin, 0);
-+ break;
-+ case 33:
-+ if (cf->vcc_pin >= 0)
-+ gpio_set_value(cf->vcc_pin, 1);
-+ break;
-+ default:
-+ return -EINVAL;
++ while (1) {
++ if (znode->level == 0) {
++ if (ubifs_zn_dirty(znode))
++ return znode;
++ return NULL;
++ }
++ cont = 0;
++ for (i = 0; i < znode->child_cnt; i++) {
++ struct ubifs_zbranch *zbr = &znode->zbranch[i];
++
++ if (zbr->znode && ubifs_zn_dirty(zbr->znode)) {
++ znode = zbr->znode;
++ cont = 1;
++ break;
++ }
++ }
++ if (!cont) {
++ if (ubifs_zn_dirty(znode))
++ return znode;
++ return NULL;
++ }
+ }
++}
+
-+ if (cf->reset_pin >= 0)
-+ gpio_set_value(cf->reset_pin, state->flags & SS_RESET);
++/**
++ * find_next_dirty - find next dirty znode.
++ * @znode: znode to begin searching from
++ */
++static struct ubifs_znode *find_next_dirty(struct ubifs_znode *znode)
++{
++ int n = znode->iip + 1;
+
-+ cf->state = *state;
++ znode = znode->parent;
++ if (!znode)
++ return NULL;
++ for (; n < znode->child_cnt; n++) {
++ struct ubifs_zbranch *zbr = &znode->zbranch[n];
+
-+ return 0;
++ if (zbr->znode && ubifs_zn_dirty(zbr->znode))
++ return find_first_dirty(zbr->znode);
++ }
++ return znode;
+}
+
-+static int at32_cf_socket_init(struct pcmcia_socket *sock)
++/**
++ * get_znodes_to_commit - create list of dirty znodes to commit.
++ * @c: UBIFS file-system description object
++ *
++ * This function returns the number of znodes to commit.
++ */
++static int get_znodes_to_commit(struct ubifs_info *c)
+{
-+ debug(to_at32_cf(sock), 2, "called\n");
++ struct ubifs_znode *znode, *cnext;
++ int cnt = 0;
+
-+ return 0;
++ c->cnext = find_first_dirty(c->zroot.znode);
++ znode = c->enext = c->cnext;
++ if (!znode) {
++ dbg_cmt("no znodes to commit");
++ return 0;
++ }
++ cnt += 1;
++ while (1) {
++ ubifs_assert(!test_bit(COW_ZNODE, &znode->flags));
++ __set_bit(COW_ZNODE, &znode->flags);
++ znode->alt = 0;
++ cnext = find_next_dirty(znode);
++ if (!cnext) {
++ znode->cnext = c->cnext;
++ break;
++ }
++ znode->cnext = cnext;
++ znode = cnext;
++ cnt += 1;
++ }
++ dbg_cmt("committing %d znodes", cnt);
++ ubifs_assert(cnt == atomic_long_read(&c->dirty_zn_cnt));
++ return cnt;
+}
+
-+static int at32_cf_suspend(struct pcmcia_socket *sock)
++/**
++ * alloc_idx_lebs - allocate empty LEBs to be used to commit.
++ * @c: UBIFS file-system description object
++ * @cnt: number of znodes to commit
++ *
++ * This function returns %-ENOSPC if it cannot allocate a sufficient number of
++ * empty LEBs. %0 is returned on success, otherwise a negative error code
++ * is returned.
++ */
++static int alloc_idx_lebs(struct ubifs_info *c, int cnt)
+{
-+ debug(to_at32_cf(sock), 2, "called\n");
-+
-+ at32_cf_set_socket(sock, &dead_socket);
++ int i, leb_cnt, lnum;
+
++ c->ileb_cnt = 0;
++ c->ileb_nxt = 0;
++ leb_cnt = get_leb_cnt(c, cnt);
++ dbg_cmt("need about %d empty LEBS for TNC commit", leb_cnt);
++ if (!leb_cnt)
++ return 0;
++ c->ilebs = kmalloc(leb_cnt * sizeof(int), GFP_NOFS);
++ if (!c->ilebs)
++ return -ENOMEM;
++ for (i = 0; i < leb_cnt; i++) {
++ lnum = ubifs_find_free_leb_for_idx(c);
++ if (lnum < 0)
++ return lnum;
++ c->ilebs[c->ileb_cnt++] = lnum;
++ dbg_cmt("LEB %d", lnum);
++ }
++ if (dbg_force_in_the_gaps())
++ return -ENOSPC;
+ return 0;
+}
+
-+static int at32_cf_set_io_map(struct pcmcia_socket *sock,
-+ struct pccard_io_map *map)
++/**
++ * free_unused_idx_lebs - free unused LEBs that were allocated for the commit.
++ * @c: UBIFS file-system description object
++ *
++ * It is possible that we allocate more empty LEBs for the commit than we need.
++ * This functions frees the surplus.
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++static int free_unused_idx_lebs(struct ubifs_info *c)
+{
-+ struct at32_cf_socket *cf = container_of(sock, struct at32_cf_socket, socket);
-+ int retval;
++ int i, err = 0, lnum, er;
+
-+ debug(cf, 2, "map %u speed %u start 0x%08x stop 0x%08x\n",
-+ map->map, map->speed, map->start, map->stop);
-+ debug(cf, 2, "flags: %s%s%s%s%s%s%s%s\n",
-+ (map->flags == 0) ? "<NONE>":"",
-+ (map->flags & MAP_ACTIVE) ? "ACTIVE " : "",
-+ (map->flags & MAP_16BIT) ? "16BIT " : "",
-+ (map->flags & MAP_AUTOSZ) ? "AUTOSZ " : "",
-+ (map->flags & MAP_0WS) ? "0WS " : "",
-+ (map->flags & MAP_WRPROT) ? "WRPROT " : "",
-+ (map->flags & MAP_USE_WAIT) ? "USE_WAIT " : "",
-+ (map->flags & MAP_PREFETCH) ? "PREFETCH " : "");
++ for (i = c->ileb_nxt; i < c->ileb_cnt; i++) {
++ lnum = c->ilebs[i];
++ dbg_cmt("LEB %d", lnum);
++ er = ubifs_change_one_lp(c, lnum, LPROPS_NC, LPROPS_NC, 0,
++ LPROPS_INDEX | LPROPS_TAKEN, 0);
++ if (!err)
++ err = er;
++ }
++ return err;
++}
+
-+ map->flags &= MAP_ACTIVE | MAP_16BIT | MAP_USE_WAIT;
++/**
++ * free_idx_lebs - free unused LEBs after commit end.
++ * @c: UBIFS file-system description object
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++static int free_idx_lebs(struct ubifs_info *c)
++{
++ int err;
+
-+ if (map->flags & MAP_16BIT)
-+ cf->smc.bus_width = 2;
-+ else
-+ cf->smc.bus_width = 1;
++ err = free_unused_idx_lebs(c);
++ kfree(c->ilebs);
++ c->ilebs = NULL;
++ return err;
++}
+
-+ if (map->flags & MAP_USE_WAIT)
-+ cf->smc.nwait_mode = 3;
-+ else
-+ cf->smc.nwait_mode = 0;
++/**
++ * ubifs_tnc_start_commit - start TNC commit.
++ * @c: UBIFS file-system description object
++ * @zroot: new index root position is returned here
++ *
++ * This function prepares the list of indexing nodes to commit and lays out
++ * their positions on flash. If there is not enough free space it uses the
++ * in-gap commit method. Returns zero in case of success and a negative error
++ * code in case of failure.
++ */
++int ubifs_tnc_start_commit(struct ubifs_info *c, struct ubifs_zbranch *zroot)
++{
++ int err = 0, cnt;
+
-+ retval = smc_set_configuration(cf->cf_cs, &cf->smc);
-+ if (retval) {
-+ printk(KERN_ERR "at32_cf: could not set up SMC for I/O\n");
-+ return retval;
++ mutex_lock(&c->tnc_mutex);
++ err = dbg_check_tnc(c, 1);
++ if (err)
++ goto out;
++ cnt = get_znodes_to_commit(c);
++ if (cnt != 0) {
++ int no_space = 0;
++
++ err = alloc_idx_lebs(c, cnt);
++ if (err == -ENOSPC)
++ no_space = 1;
++ else if (err)
++ goto out_free;
++ err = layout_commit(c, no_space, cnt);
++ if (err)
++ goto out_free;
++ ubifs_assert(atomic_long_read(&c->dirty_zn_cnt) == 0);
++ err = free_unused_idx_lebs(c);
++ if (err)
++ goto out;
+ }
++ destroy_old_idx(c);
++ memcpy(zroot, &c->zroot, sizeof(struct ubifs_zbranch));
+
-+ map->start = cf->socket.io_offset;
-+ map->stop = map->start + CF_RES_SIZE - 1;
++ err = ubifs_save_dirty_idx_lnums(c);
++ if (err)
++ goto out;
+
-+ return 0;
++ spin_lock(&c->space_lock);
++ /*
++ * Although we have not finished committing yet, update size of the
++ * committed index ('c->old_idx_sz') and zero out the index growth
++ * budget. It is OK to do this now, because we've reserved all the
++ * space which is needed to commit the index, and it is save for the
++ * budgeting subsystem to assume the index is already committed,
++ * even though it is not.
++ */
++ c->old_idx_sz = c->calc_idx_sz;
++ c->budg_uncommitted_idx = 0;
++ spin_unlock(&c->space_lock);
++ mutex_unlock(&c->tnc_mutex);
++
++ dbg_cmt("number of index LEBs %d", c->lst.idx_lebs);
++ dbg_cmt("size of index %llu", c->calc_idx_sz);
++ return err;
++
++out_free:
++ free_idx_lebs(c);
++out:
++ mutex_unlock(&c->tnc_mutex);
++ return err;
+}
+
-+static int
-+at32_cf_set_mem_map(struct pcmcia_socket *sock, struct pccard_mem_map *map)
++/**
++ * write_index - write index nodes.
++ * @c: UBIFS file-system description object
++ *
++ * This function writes the index nodes whose positions were laid out in the
++ * layout_in_empty_space function.
++ */
++static int write_index(struct ubifs_info *c)
+{
-+ struct at32_cf_socket *cf;
-+ struct resource *res;
-+ int retval;
++ struct ubifs_idx_node *idx;
++ struct ubifs_znode *znode, *cnext;
++ int i, lnum, offs, len, next_len, buf_len, buf_offs, used;
++ int avail, wlen, err, lnum_pos = 0;
+
-+ cf = container_of(sock, struct at32_cf_socket, socket);
++ cnext = c->enext;
++ if (!cnext)
++ return 0;
+
-+ debug(cf, 2, "map %u speed %u card_start %08x\n",
-+ map->map, map->speed, map->card_start);
-+ debug(cf, 2, "flags: %s%s%s%s%s%s%s%s\n",
-+ (map->flags==0)?"<NONE>":"",
-+ (map->flags&MAP_ACTIVE)?"ACTIVE ":"",
-+ (map->flags&MAP_16BIT)?"16BIT ":"",
-+ (map->flags&MAP_AUTOSZ)?"AUTOSZ ":"",
-+ (map->flags&MAP_0WS)?"0WS ":"",
-+ (map->flags&MAP_WRPROT)?"WRPROT ":"",
-+ (map->flags&MAP_ATTRIB)?"ATTRIB ":"",
-+ (map->flags&MAP_USE_WAIT)?"USE_WAIT ":"");
++ /*
++ * Always write index nodes to the index head so that index nodes and
++ * other types of nodes are never mixed in the same erase block.
++ */
++ lnum = c->ihead_lnum;
++ buf_offs = c->ihead_offs;
++
++ /* Allocate commit buffer */
++ buf_len = ALIGN(c->max_idx_node_sz, c->min_io_size);
++ used = 0;
++ avail = buf_len;
++
++ /* Ensure there is enough room for first write */
++ next_len = ubifs_idx_node_sz(c, cnext->child_cnt);
++ if (buf_offs + next_len > c->leb_size) {
++ err = ubifs_update_one_lp(c, lnum, LPROPS_NC, 0, 0,
++ LPROPS_TAKEN);
++ if (err)
++ return err;
++ lnum = -1;
++ }
++
++ while (1) {
++ cond_resched();
++
++ znode = cnext;
++ idx = c->cbuf + used;
++
++ /* Make index node */
++ idx->ch.node_type = UBIFS_IDX_NODE;
++ idx->child_cnt = cpu_to_le16(znode->child_cnt);
++ idx->level = cpu_to_le16(znode->level);
++ for (i = 0; i < znode->child_cnt; i++) {
++ struct ubifs_branch *br = ubifs_idx_branch(c, idx, i);
++ struct ubifs_zbranch *zbr = &znode->zbranch[i];
++
++ key_write_idx(c, &zbr->key, &br->key);
++ br->lnum = cpu_to_le32(zbr->lnum);
++ br->offs = cpu_to_le32(zbr->offs);
++ br->len = cpu_to_le32(zbr->len);
++ if (!zbr->lnum || !zbr->len) {
++ ubifs_err("bad ref in znode");
++ dbg_dump_znode(c, znode);
++ if (zbr->znode)
++ dbg_dump_znode(c, zbr->znode);
++ }
++ }
++ len = ubifs_idx_node_sz(c, znode->child_cnt);
++ ubifs_prepare_node(c, idx, len, 0);
++
++ /* Determine the index node position */
++ if (lnum == -1) {
++ lnum = c->ilebs[lnum_pos++];
++ buf_offs = 0;
++ used = 0;
++ avail = buf_len;
++ }
++ offs = buf_offs + used;
++
++#ifdef CONFIG_UBIFS_FS_DEBUG
++ if (lnum != znode->lnum || offs != znode->offs ||
++ len != znode->len) {
++ ubifs_err("inconsistent znode posn");
++ return -EINVAL;
++ }
++#endif
++
++ /* Grab some stuff from znode while we still can */
++ cnext = znode->cnext;
+
-+ if (map->card_start)
-+ return -EINVAL;
++ ubifs_assert(ubifs_zn_dirty(znode));
++ ubifs_assert(test_bit(COW_ZNODE, &znode->flags));
+
-+ map->flags &= MAP_ACTIVE | MAP_ATTRIB | MAP_16BIT | MAP_USE_WAIT;
++ /*
++ * It is important that other threads should see %DIRTY_ZNODE
++ * flag cleared before %COW_ZNODE. Specifically, it matters in
++ * the 'dirty_cow_znode()' function. This is the reason for the
++ * first barrier. Also, we want the bit changes to be seen to
++ * other threads ASAP, to avoid unnecesarry copying, which is
++ * the reason for the second barrier.
++ */
++ clear_bit(DIRTY_ZNODE, &znode->flags);
++ smp_mb__before_clear_bit();
++ clear_bit(COW_ZNODE, &znode->flags);
++ smp_mb__after_clear_bit();
+
-+ if (map->flags & MAP_ATTRIB) {
-+ res = &cf->res_attr;
++ /* Do not access znode from this point on */
+
-+ /* Linksys WCF12 seems to use WAIT when reading CIS */
-+ map->flags |= MAP_USE_WAIT;
-+ } else {
-+ res = &cf->res_mem;
-+ }
++ /* Update buffer positions */
++ wlen = used + len;
++ used += ALIGN(len, 8);
++ avail -= ALIGN(len, 8);
+
-+ if (map->flags & MAP_USE_WAIT)
-+ cf->smc.nwait_mode = 3;
-+ else
-+ cf->smc.nwait_mode = 0;
++ /*
++ * Calculate the next index node length to see if there is
++ * enough room for it
++ */
++ if (cnext == c->cnext)
++ next_len = 0;
++ else
++ next_len = ubifs_idx_node_sz(c, cnext->child_cnt);
+
-+ retval = smc_set_configuration(cf->cf_cs, &cf->smc);
-+ if (retval) {
-+ printk(KERN_ERR "at32_cf: could not set up SMC for mem\n");
-+ return retval;
++ if (c->min_io_size == 1) {
++ /*
++ * Write the prepared index node immediately if there is
++ * no minimum IO size
++ */
++ err = ubifs_leb_write(c, lnum, c->cbuf, buf_offs,
++ wlen, UBI_SHORTTERM);
++ if (err)
++ return err;
++ buf_offs += ALIGN(wlen, 8);
++ if (next_len) {
++ used = 0;
++ avail = buf_len;
++ if (buf_offs + next_len > c->leb_size) {
++ err = ubifs_update_one_lp(c, lnum,
++ LPROPS_NC, 0, 0, LPROPS_TAKEN);
++ if (err)
++ return err;
++ lnum = -1;
++ }
++ continue;
++ }
++ } else {
++ int blen, nxt_offs = buf_offs + used + next_len;
++
++ if (next_len && nxt_offs <= c->leb_size) {
++ if (avail > 0)
++ continue;
++ else
++ blen = buf_len;
++ } else {
++ wlen = ALIGN(wlen, 8);
++ blen = ALIGN(wlen, c->min_io_size);
++ ubifs_pad(c, c->cbuf + wlen, blen - wlen);
++ }
++ /*
++ * The buffer is full or there are no more znodes
++ * to do
++ */
++ err = ubifs_leb_write(c, lnum, c->cbuf, buf_offs,
++ blen, UBI_SHORTTERM);
++ if (err)
++ return err;
++ buf_offs += blen;
++ if (next_len) {
++ if (nxt_offs > c->leb_size) {
++ err = ubifs_update_one_lp(c, lnum,
++ LPROPS_NC, 0, 0, LPROPS_TAKEN);
++ if (err)
++ return err;
++ lnum = -1;
++ }
++ used -= blen;
++ if (used < 0)
++ used = 0;
++ avail = buf_len - used;
++ memmove(c->cbuf, c->cbuf + blen, used);
++ continue;
++ }
++ }
++ break;
+ }
+
-+ map->static_start = res->start;
++#ifdef CONFIG_UBIFS_FS_DEBUG
++ if (lnum != c->new_ihead_lnum || buf_offs != c->new_ihead_offs) {
++ ubifs_err("inconsistent ihead");
++ return -EINVAL;
++ }
++#endif
++
++ c->ihead_lnum = lnum;
++ c->ihead_offs = buf_offs;
+
+ return 0;
+}
+
-+static struct pccard_operations at32_cf_ops = {
-+ .init = at32_cf_socket_init,
-+ .suspend = at32_cf_suspend,
-+ .get_status = at32_cf_get_status,
-+ .set_socket = at32_cf_set_socket,
-+ .set_io_map = at32_cf_set_io_map,
-+ .set_mem_map = at32_cf_set_mem_map,
-+};
++/**
++ * free_obsolete_znodes - free obsolete znodes.
++ * @c: UBIFS file-system description object
++ *
++ * At the end of commit end, obsolete znodes are freed.
++ */
++static void free_obsolete_znodes(struct ubifs_info *c)
++{
++ struct ubifs_znode *znode, *cnext;
+
-+static int __init request_pin(struct platform_device *pdev,
-+ unsigned int pin, const char *name)
++ cnext = c->cnext;
++ do {
++ znode = cnext;
++ cnext = znode->cnext;
++ if (test_bit(OBSOLETE_ZNODE, &znode->flags))
++ kfree(znode);
++ else {
++ znode->cnext = NULL;
++ atomic_long_inc(&c->clean_zn_cnt);
++ atomic_long_inc(&ubifs_clean_zn_cnt);
++ }
++ } while (cnext != c->cnext);
++}
++
++/**
++ * return_gap_lebs - return LEBs used by the in-gap commit method.
++ * @c: UBIFS file-system description object
++ *
++ * This function clears the "taken" flag for the LEBs which were used by the
++ * "commit in-the-gaps" method.
++ */
++static int return_gap_lebs(struct ubifs_info *c)
+{
-+ if (gpio_request(pin, name)) {
-+ dev_warn(&pdev->dev, "failed to request %s pin\n", name);
-+ return -1;
++ int *p, err;
++
++ if (!c->gap_lebs)
++ return 0;
++
++ dbg_cmt("");
++ for (p = c->gap_lebs; *p != -1; p++) {
++ err = ubifs_change_one_lp(c, *p, LPROPS_NC, LPROPS_NC, 0,
++ LPROPS_TAKEN, 0);
++ if (err)
++ return err;
+ }
+
-+ return pin;
++ kfree(c->gap_lebs);
++ c->gap_lebs = NULL;
++ return 0;
+}
+
-+static struct smc_timing at32_cf_timing __initdata = {
-+ .ncs_read_setup = 30,
-+ .nrd_setup = 100,
-+ .ncs_write_setup = 30,
-+ .nwe_setup = 100,
++/**
++ * ubifs_tnc_end_commit - update the TNC for commit end.
++ * @c: UBIFS file-system description object
++ *
++ * Write the dirty znodes.
++ */
++int ubifs_tnc_end_commit(struct ubifs_info *c)
++{
++ int err;
+
-+ .ncs_read_pulse = 360,
-+ .nrd_pulse = 290,
-+ .ncs_write_pulse = 360,
-+ .nwe_pulse = 290,
++ if (!c->cnext)
++ return 0;
+
-+ .read_cycle = 420,
-+ .write_cycle = 420,
-+};
++ err = return_gap_lebs(c);
++ if (err)
++ return err;
+
-+static int __init at32_cf_probe(struct platform_device *pdev)
-+{
-+ struct at32_cf_socket *cf;
-+ struct cf_platform_data *board = pdev->dev.platform_data;
-+ struct resource *res_skt;
-+ int irq;
-+ int ret;
++ err = write_index(c);
++ if (err)
++ return err;
+
-+ dev_dbg(&pdev->dev, "probe");
++ mutex_lock(&c->tnc_mutex);
+
-+ if (!board)
-+ return -ENXIO;
++ dbg_cmt("TNC height is %d", c->zroot.znode->level + 1);
+
-+ res_skt = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-+ if (!res_skt)
-+ return -ENXIO;
++ free_obsolete_znodes(c);
+
-+ irq = platform_get_irq(pdev, 0);
-+ if (irq < 0)
-+ return irq;
++ c->cnext = NULL;
++ kfree(c->ilebs);
++ c->ilebs = NULL;
+
-+ cf = kzalloc(sizeof(struct at32_cf_socket), GFP_KERNEL);
-+ if (!cf)
-+ return -ENOMEM;
++ mutex_unlock(&c->tnc_mutex);
+
-+ cf->detect_pin = -1;
-+ cf->reset_pin = -1;
-+ cf->vcc_pin = -1;
-+ cf->ready_pin = -1;
-+ cf->cf_cs = board->cs;
++ return 0;
++}
+diff --exclude=.git -urN linux-2.6.25.6/fs/ubifs/tnc_misc.c avr32-2.6/fs/ubifs/tnc_misc.c
+--- linux-2.6.25.6/fs/ubifs/tnc_misc.c 1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/fs/ubifs/tnc_misc.c 2008-06-12 15:09:45.603817614 +0200
+@@ -0,0 +1,496 @@
++/*
++ * This file is part of UBIFS.
++ *
++ * Copyright (C) 2006-2008 Nokia Corporation.
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published by
++ * the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but WITHOUT
++ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
++ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
++ * more details.
++ *
++ * You should have received a copy of the GNU General Public License along with
++ * this program; if not, write to the Free Software Foundation, Inc., 51
++ * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
++ *
++ * Authors: Adrian Hunter
++ * Artem Bityutskiy (Битюцкий Артём)
++ */
+
-+ if (board->detect_pin != GPIO_PIN_NONE)
-+ cf->detect_pin = request_pin(pdev, board->detect_pin,
-+ "cf_detect");
-+ if (board->reset_pin != GPIO_PIN_NONE)
-+ cf->reset_pin = request_pin(pdev, board->reset_pin,
-+ "cf_reset");
-+ if (board->vcc_pin != GPIO_PIN_NONE)
-+ cf->vcc_pin = request_pin(pdev, board->vcc_pin,
-+ "cf_vcc");
-+ if (board->ready_pin != GPIO_PIN_NONE)
-+ /* READY is also used for irq through EIM */
-+ cf->ready_pin = board->ready_pin;
++/*
++ * This file contains miscelanious TNC-related functions shared betweend
++ * different files. This file does not form any logically separate TNC
++ * sub-system. The file was created because there is a lot of TNC code and
++ * putting it all in one file would make that file too big and unreadable.
++ */
+
-+ debug(cf, 2, "pins: detect=%d reset=%d vcc=%d\n",
-+ cf->detect_pin, cf->reset_pin, cf->vcc_pin);
++#include "ubifs.h"
+
-+ cf->socket.pci_irq = irq;
-+ cf->socket.ops = &at32_cf_ops;
-+ cf->socket.resource_ops = &pccard_static_ops;
-+ cf->socket.dev.parent = &pdev->dev;
-+ cf->socket.owner = THIS_MODULE;
-+ cf->socket.features =
-+ SS_CAP_MEM_ALIGN | SS_CAP_STATIC_MAP | SS_CAP_PCCARD;
-+ cf->socket.map_size = CF_RES_SIZE;
++/**
++ * ubifs_tnc_levelorder_next - next TNC tree element in levelorder traversal.
++ * @zr: root of the subtree to traverse
++ * @znode: previous znode
++ *
++ * This function implements levelorder TNC traversal. The LNC is ignored.
++ * Returns the next element or %NULL if @znode is already the last one.
++ */
++struct ubifs_znode *ubifs_tnc_levelorder_next(struct ubifs_znode *zr,
++ struct ubifs_znode *znode)
++{
++ int level, iip, level_search = 0;
++ struct ubifs_znode *zn;
+
-+ cf->res_attr.start = res_skt->start + CF_ATTR_OFFSET;
-+ cf->res_attr.end = cf->res_attr.start + CF_RES_SIZE - 1;
-+ cf->res_attr.name = "attribute";
-+ cf->res_attr.flags = IORESOURCE_MEM;
-+ ret = request_resource(res_skt, &cf->res_attr);
-+ if (ret)
-+ goto err_request_res_attr;
++ ubifs_assert(zr);
+
-+ cf->res_mem.start = res_skt->start + CF_MEM_OFFSET;
-+ cf->res_mem.end = cf->res_mem.start + CF_RES_SIZE - 1;
-+ cf->res_mem.name = "memory";
-+ cf->res_mem.flags = IORESOURCE_MEM;
-+ ret = request_resource(res_skt, &cf->res_mem);
-+ if (ret)
-+ goto err_request_res_mem;
++ if (unlikely(!znode))
++ return zr;
+
-+ cf->res_io.start = res_skt->start + CF_IO_OFFSET;
-+ cf->res_io.end = cf->res_io.start + CF_RES_SIZE - 1;
-+ cf->res_io.name = "io";
-+ cf->res_io.flags = IORESOURCE_MEM;
-+ ret = request_resource(res_skt, &cf->res_io);
-+ if (ret)
-+ goto err_request_res_io;
++ if (unlikely(znode == zr)) {
++ if (znode->level == 0)
++ return NULL;
++ return ubifs_tnc_find_child(zr, 0);
++ }
+
-+ cf->socket.io_offset = cf->res_io.start;
++ level = znode->level;
+
-+ if (cf->detect_pin >= 0) {
-+ ret = request_irq(gpio_to_irq(cf->detect_pin), at32_cf_irq,
-+ IRQF_SHARED, "cf_detect", cf);
-+ if (ret) {
-+ debug(cf, 1,
-+ "failed to request cf_detect interrupt\n");
-+ goto err_detect_irq;
++ iip = znode->iip;
++ while (1) {
++ ubifs_assert(znode->level <= zr->level);
++
++ /*
++ * First walk up until there is a znode with next branch to
++ * look at.
++ */
++ while (znode->parent != zr && iip >= znode->parent->child_cnt) {
++ znode = znode->parent;
++ iip = znode->iip;
+ }
-+ }
+
-+ cf->present = at32_cf_present(cf);
++ if (unlikely(znode->parent == zr &&
++ iip >= znode->parent->child_cnt)) {
++ /* This level is done, switch to the lower one */
++ level -= 1;
++ if (level_search || level < 0)
++ /*
++ * We were already looking for znode at lower
++ * level ('level_search'). As we are here
++ * again, it just does not exist. Or all levels
++ * were finished ('level < 0').
++ */
++ return NULL;
+
-+ /* Setup SMC timings */
-+ smc_set_timing(&cf->smc, &at32_cf_timing);
++ level_search = 1;
++ iip = -1;
++ znode = ubifs_tnc_find_child(zr, 0);
++ ubifs_assert(znode);
++ }
+
-+ cf->smc.bus_width = 2;
-+ cf->smc.nrd_controlled = 1;
-+ cf->smc.nwe_controlled = 1;
-+ cf->smc.nwait_mode = 0;
-+ cf->smc.byte_write = 0;
-+ cf->smc.tdf_cycles = 8;
-+ cf->smc.tdf_mode = 0;
++ /* Switch to the next index */
++ zn = ubifs_tnc_find_child(znode->parent, iip + 1);
++ if (!zn) {
++ /* No more children to look at, we have walk up */
++ iip = znode->parent->child_cnt;
++ continue;
++ }
+
-+ ret = smc_set_configuration(cf->cf_cs, &cf->smc);
-+ if (ret) {
-+ debug(cf, 1, "failed to configure SMC\n", ret);
-+ goto err_smc;
-+ }
++ /* Walk back down to the level we came from ('level') */
++ while (zn->level != level) {
++ znode = zn;
++ zn = ubifs_tnc_find_child(zn, 0);
++ if (!zn) {
++ /*
++ * This path is not too deep so it does not
++ * reach 'level'. Try next path.
++ */
++ iip = znode->iip;
++ break;
++ }
++ }
+
-+ ret = pcmcia_register_socket(&cf->socket);
-+ if (ret) {
-+ debug(cf, 1, "failed to register socket: %d\n", ret);
-+ goto err_register_socket;
++ if (zn) {
++ ubifs_assert(zn->level >= 0);
++ return zn;
++ }
+ }
++}
+
-+ if (cf->reset_pin >= 0)
-+ gpio_direction_output(cf->reset_pin, 0);
++/**
++ * ubifs_search_zbranch - search znode branch.
++ * @c: UBIFS file-system description object
++ * @znode: znode to search in
++ * @key: key to search for
++ * @n: znode branch slot number is returned here
++ *
++ * This is a helper function which search branch with key @key in @znode using
++ * binary search. The result of the search may be:
++ * o exact match, then %1 is returned, and the slot number of the branch is
++ * stored in @n;
++ * o no exact match, then %0 is returned and the slot number of the left
++ * closest branch is returned in @n; the slot if all keys in this znode are
++ * greater than @key, then %-1 is returned in @n.
++ */
++int ubifs_search_zbranch(const struct ubifs_info *c,
++ const struct ubifs_znode *znode,
++ const union ubifs_key *key, int *n)
++{
++ int beg = 0, end = znode->child_cnt, uninitialized_var(mid);
++ int uninitialized_var(cmp);
++ const struct ubifs_zbranch *zbr = &znode->zbranch[0];
++
++ ubifs_assert(end > beg);
++
++ while (end > beg) {
++ mid = (beg + end) >> 1;
++ cmp = keys_cmp(c, key, &zbr[mid].key);
++ if (cmp > 0)
++ beg = mid + 1;
++ else if (cmp < 0)
++ end = mid;
++ else {
++ *n = mid;
++ return 1;
++ }
++ }
+
-+ platform_set_drvdata(pdev, cf);
++ *n = end - 1;
+
-+ dev_info(&pdev->dev, "Atmel SMC CF interface at 0x%08lx\n",
-+ (unsigned long)res_skt->start);
++ /* The insert point is after *n */
++ ubifs_assert(*n >= -1 && *n < znode->child_cnt);
++ if (*n == -1)
++ ubifs_assert(keys_cmp(c, key, &zbr[0].key) < 0);
++ else
++ ubifs_assert(keys_cmp(c, key, &zbr[*n].key) > 0);
++ if (*n + 1 < znode->child_cnt)
++ ubifs_assert(keys_cmp(c, key, &zbr[*n + 1].key) < 0);
+
+ return 0;
++}
+
-+err_register_socket:
-+err_smc:
-+ if (cf->detect_pin >= 0)
-+ free_irq(gpio_to_irq(cf->detect_pin), cf);
-+err_detect_irq:
-+ release_resource(&cf->res_io);
-+err_request_res_io:
-+ release_resource(&cf->res_mem);
-+err_request_res_mem:
-+ release_resource(&cf->res_attr);
-+err_request_res_attr:
-+ if (cf->vcc_pin >= 0)
-+ gpio_free(cf->vcc_pin);
-+ if (cf->reset_pin >= 0)
-+ gpio_free(cf->reset_pin);
-+ if (cf->detect_pin >= 0)
-+ gpio_free(cf->detect_pin);
-+ kfree(cf);
++/**
++ * ubifs_tnc_postorder_first - find first znode to do postorder tree traversal.
++ * @znode: znode to start at (root of the sub-tree to traverse)
++ *
++ * Find the lowest leftmost znode in a subtree of the TNC tree. The LNC is
++ * ignored.
++ */
++struct ubifs_znode *ubifs_tnc_postorder_first(struct ubifs_znode *znode)
++{
++ if (unlikely(!znode))
++ return NULL;
+
-+ return ret;
++ while (znode->level > 0) {
++ struct ubifs_znode *child;
++
++ child = ubifs_tnc_find_child(znode, 0);
++ if (!child)
++ return znode;
++ znode = child;
++ }
++
++ return znode;
+}
+
-+static int __exit at32_cf_remove(struct platform_device *pdev)
++/**
++ * ubifs_tnc_postorder_next - next TNC tree element in postorder traversal.
++ * @znode: previous znode
++ *
++ * This function implements postorder TNC traversal. The LNC is ignored.
++ * Returns the next element or %NULL if @znode is already the last one.
++ */
++struct ubifs_znode *ubifs_tnc_postorder_next(struct ubifs_znode *znode)
+{
-+ struct at32_cf_socket *cf = platform_get_drvdata(pdev);
++ struct ubifs_znode *zn;
+
-+ pcmcia_unregister_socket(&cf->socket);
-+ if (cf->detect_pin >= 0) {
-+ free_irq(gpio_to_irq(cf->detect_pin), cf);
-+ gpio_free(cf->detect_pin);
-+ }
-+ if (cf->vcc_pin >= 0)
-+ gpio_free(cf->vcc_pin);
-+ if (cf->reset_pin >= 0)
-+ gpio_free(cf->reset_pin);
++ ubifs_assert(znode);
++ if (unlikely(!znode->parent))
++ return NULL;
+
-+ release_resource(&cf->res_io);
-+ release_resource(&cf->res_mem);
-+ release_resource(&cf->res_attr);
-+ kfree(cf);
-+ platform_set_drvdata(pdev, NULL);
++ /* Switch to the next index in the parent */
++ zn = ubifs_tnc_find_child(znode->parent, znode->iip + 1);
++ if (!zn)
++ /* This is in fact the last child, return parent */
++ return znode->parent;
+
-+ return 0;
++ /* Go to the first znode in this new subtree */
++ return ubifs_tnc_postorder_first(zn);
+}
+
-+static struct platform_driver at32_cf_driver = {
-+ .remove = __exit_p(at32_cf_remove),
-+ .driver = {
-+ .name = "at32_cf",
-+ .owner = THIS_MODULE,
-+ },
-+};
-+
-+static int __init at32_cf_init(void)
++/**
++ * ubifs_destroy_tnc_subtree - destroy all znodes connected to a subtree.
++ * @znode: znode defining subtree to destroy
++ *
++ * This function destroys subtree of the TNC tree. Returns number of clean
++ * znodes in the subtree.
++ */
++long ubifs_destroy_tnc_subtree(struct ubifs_znode *znode)
+{
-+ int ret;
++ struct ubifs_znode *zn = ubifs_tnc_postorder_first(znode);
++ long clean_freed = 0;
++ int n;
+
-+ ret = platform_driver_probe(&at32_cf_driver, at32_cf_probe);
-+ if (ret)
-+ printk(KERN_ERR "at32_cf: probe failed: %d\n", ret);
-+ return ret;
++ ubifs_assert(zn);
++ while (1) {
++ for (n = 0; n < zn->child_cnt; n++) {
++ if (!zn->zbranch[n].znode)
++ continue;
++
++ if (zn->level > 0 &&
++ !ubifs_zn_dirty(zn->zbranch[n].znode))
++ clean_freed += 1;
++
++ cond_resched();
++ kfree(zn->zbranch[n].znode);
++ }
++
++ if (zn == znode) {
++ if (!ubifs_zn_dirty(zn))
++ clean_freed += 1;
++ kfree(zn);
++ return clean_freed;
++ }
++
++ zn = ubifs_tnc_postorder_next(zn);
++ }
+}
+
-+static void __exit at32_cf_exit(void)
++/**
++ * read_znode - read an indexing node from flash and fill znode.
++ * @c: UBIFS file-system description object
++ * @lnum: LEB of the indexing node to read
++ * @offs: node offset
++ * @len: node length
++ * @znode: znode to read to
++ *
++ * This function reads an indexing node from the flash media and fills znode
++ * with the read data. Returns zero in case of success and a negative error
++ * code in case of failure. The read indexing node is validated and if anything
++ * is wrong with it, this function prints complaint messages and returns
++ * %-EINVAL.
++ */
++static int read_znode(struct ubifs_info *c, int lnum, int offs, int len,
++ struct ubifs_znode *znode)
+{
-+ platform_driver_unregister(&at32_cf_driver);
-+}
++ int i, err, type, cmp;
++ struct ubifs_idx_node *idx;
+
-+module_init(at32_cf_init);
-+module_exit(at32_cf_exit);
++ idx = kmalloc(c->max_idx_node_sz, GFP_NOFS);
++ if (!idx)
++ return -ENOMEM;
+
-+MODULE_LICENSE("GPL");
-+MODULE_DESCRIPTION("Driver for SMC PCMCIA interface");
-+MODULE_AUTHOR("Hans-Christian Egtvedt <hcegtvedt@atmel.com>");
---- a/drivers/pcmcia/Kconfig
-+++ b/drivers/pcmcia/Kconfig
-@@ -276,6 +276,13 @@
- Say Y here to support the CompactFlash controller on the
- PA Semi Electra eval board.
-
-+config AT32_CF
-+ tristate "AT32AP CompactFlash Controller"
-+ depends on PCMCIA && AVR32 && PLATFORM_AT32AP
-+ help
-+ Say Y here to support the CompactFlash controller on AT32 chips.
-+ Or choose M to compile the driver as a module named "at32_cf".
++ err = ubifs_read_node(c, idx, UBIFS_IDX_NODE, len, lnum, offs);
++ if (err < 0) {
++ kfree(idx);
++ return err;
++ }
+
- config PCCARD_NONSTATIC
- tristate
-
---- a/drivers/pcmcia/Makefile
-+++ b/drivers/pcmcia/Makefile
-@@ -38,6 +38,7 @@
- obj-$(CONFIG_OMAP_CF) += omap_cf.o
- obj-$(CONFIG_AT91_CF) += at91_cf.o
- obj-$(CONFIG_ELECTRA_CF) += electra_cf.o
-+obj-$(CONFIG_AT32_CF) += at32_cf.o
-
- sa11xx_core-y += soc_common.o sa11xx_base.o
- pxa2xx_core-y += soc_common.o pxa2xx_base.o
---- a/drivers/serial/atmel_serial.c
-+++ b/drivers/serial/atmel_serial.c
-@@ -7,6 +7,8 @@
- * Based on drivers/char/serial_sa1100.c, by Deep Blue Solutions Ltd.
- * Based on drivers/char/serial.c, by Linus Torvalds, Theodore Ts'o.
- *
-+ * DMA support added by Chip Coldwell.
-+ *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
-@@ -33,7 +35,9 @@
- #include <linux/sysrq.h>
- #include <linux/tty_flip.h>
- #include <linux/platform_device.h>
-+#include <linux/dma-mapping.h>
- #include <linux/atmel_pdc.h>
-+#include <linux/atmel_serial.h>
-
- #include <asm/io.h>
-
-@@ -45,7 +49,9 @@
- #include <asm/arch/gpio.h>
- #endif
-
--#include "atmel_serial.h"
-+#define PDC_BUFFER_SIZE 512
-+/* Revisit: We should calculate this based on the actual port settings */
-+#define PDC_RX_TIMEOUT (3 * 10) /* 3 bytes */
-
- #if defined(CONFIG_SERIAL_ATMEL_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
- #define SUPPORT_SYSRQ
-@@ -74,6 +80,7 @@
-
- #define ATMEL_ISR_PASS_LIMIT 256
-
-+/* UART registers. CR is write-only, hence no GET macro */
- #define UART_PUT_CR(port,v) __raw_writel(v, (port)->membase + ATMEL_US_CR)
- #define UART_GET_MR(port) __raw_readl((port)->membase + ATMEL_US_MR)
- #define UART_PUT_MR(port,v) __raw_writel(v, (port)->membase + ATMEL_US_MR)
-@@ -87,8 +94,6 @@
- #define UART_PUT_BRGR(port,v) __raw_writel(v, (port)->membase + ATMEL_US_BRGR)
- #define UART_PUT_RTOR(port,v) __raw_writel(v, (port)->membase + ATMEL_US_RTOR)
-
--// #define UART_GET_CR(port) __raw_readl((port)->membase + ATMEL_US_CR) // is write-only
--
- /* PDC registers */
- #define UART_PUT_PTCR(port,v) __raw_writel(v, (port)->membase + ATMEL_PDC_PTCR)
- #define UART_GET_PTSR(port) __raw_readl((port)->membase + ATMEL_PDC_PTSR)
-@@ -101,12 +106,24 @@
-
- #define UART_PUT_TPR(port,v) __raw_writel(v, (port)->membase + ATMEL_PDC_TPR)
- #define UART_PUT_TCR(port,v) __raw_writel(v, (port)->membase + ATMEL_PDC_TCR)
--//#define UART_PUT_TNPR(port,v) __raw_writel(v, (port)->membase + ATMEL_PDC_TNPR)
--//#define UART_PUT_TNCR(port,v) __raw_writel(v, (port)->membase + ATMEL_PDC_TNCR)
-
- static int (*atmel_open_hook)(struct uart_port *);
- static void (*atmel_close_hook)(struct uart_port *);
-
-+struct atmel_dma_buffer {
-+ unsigned char *buf;
-+ dma_addr_t dma_addr;
-+ unsigned int dma_size;
-+ unsigned int ofs;
-+};
++ znode->child_cnt = le16_to_cpu(idx->child_cnt);
++ znode->level = le16_to_cpu(idx->level);
+
-+struct atmel_uart_char {
-+ u16 status;
-+ u16 ch;
-+};
++ dbg_tnc("LEB %d:%d, level %d, %d branch",
++ lnum, offs, znode->level, znode->child_cnt);
+
-+#define ATMEL_SERIAL_RINGSIZE 1024
++ if (znode->child_cnt > c->fanout || znode->level > UBIFS_MAX_LEVELS) {
++ dbg_err("current fanout %d, branch count %d",
++ c->fanout, znode->child_cnt);
++ dbg_err("max levels %d, znode level %d",
++ UBIFS_MAX_LEVELS, znode->level);
++ err = 1;
++ goto out_dump;
++ }
+
- /*
- * We wrap our port structure around the generic uart_port.
- */
-@@ -115,6 +132,19 @@
- struct clk *clk; /* uart clock */
- unsigned short suspended; /* is port suspended? */
- int break_active; /* break being received */
++ for (i = 0; i < znode->child_cnt; i++) {
++ const struct ubifs_branch *br = ubifs_idx_branch(c, idx, i);
++ struct ubifs_zbranch *zbr = &znode->zbranch[i];
+
-+ short use_dma_rx; /* enable PDC receiver */
-+ short pdc_rx_idx; /* current PDC RX buffer */
-+ struct atmel_dma_buffer pdc_rx[2]; /* PDC receier */
++ key_read(c, &br->key, &zbr->key);
++ zbr->lnum = le32_to_cpu(br->lnum);
++ zbr->offs = le32_to_cpu(br->offs);
++ zbr->len = le32_to_cpu(br->len);
++ zbr->znode = NULL;
+
-+ short use_dma_tx; /* enable PDC transmitter */
-+ struct atmel_dma_buffer pdc_tx; /* PDC transmitter */
++ /* Validate branch */
+
-+ struct tasklet_struct tasklet;
-+ unsigned int irq_status;
-+ unsigned int irq_status_prev;
++ if (zbr->lnum < c->main_first ||
++ zbr->lnum >= c->leb_cnt || zbr->offs < 0 ||
++ zbr->offs + zbr->len > c->leb_size || zbr->offs & 7) {
++ dbg_err("bad branch %d", i);
++ err = 2;
++ goto out_dump;
++ }
+
-+ struct circ_buf rx_ring;
- };
-
- static struct atmel_uart_port atmel_ports[ATMEL_MAX_UART];
-@@ -123,6 +153,38 @@
- static struct console atmel_console;
- #endif
-
-+static inline struct atmel_uart_port *
-+to_atmel_uart_port(struct uart_port *uart)
-+{
-+ return container_of(uart, struct atmel_uart_port, uart);
-+}
++ switch (key_type(c, &zbr->key)) {
++ case UBIFS_INO_KEY:
++ case UBIFS_DATA_KEY:
++ case UBIFS_DENT_KEY:
++ case UBIFS_XENT_KEY:
++ break;
++ default:
++ dbg_msg("bad key type at slot %d: %s", i,
++ DBGKEY(&zbr->key));
++ err = 3;
++ goto out_dump;
++ }
+
-+#ifdef CONFIG_SERIAL_ATMEL_PDC
-+static bool atmel_use_dma_rx(struct uart_port *port)
-+{
-+ struct atmel_uart_port *atmel_port = to_atmel_uart_port(port);
++ if (znode->level)
++ continue;
+
-+ return atmel_port->use_dma_rx;
-+}
++ type = key_type(c, &zbr->key);
++ if (c->ranges[type].max_len == 0) {
++ if (zbr->len != c->ranges[type].len) {
++ dbg_err("bad target node (type %d) length (%d)",
++ type, zbr->len);
++ dbg_err("have to be %d", c->ranges[type].len);
++ err = 4;
++ goto out_dump;
++ }
++ } else if (zbr->len < c->ranges[type].min_len ||
++ zbr->len > c->ranges[type].max_len) {
++ dbg_err("bad target node (type %d) length (%d)",
++ type, zbr->len);
++ dbg_err("have to be in range of %d-%d",
++ c->ranges[type].min_len,
++ c->ranges[type].max_len);
++ err = 5;
++ goto out_dump;
++ }
++ }
+
-+static bool atmel_use_dma_tx(struct uart_port *port)
-+{
-+ struct atmel_uart_port *atmel_port = to_atmel_uart_port(port);
++ /*
++ * Ensure that the next key is greater or equivalent to the
++ * previous one.
++ */
++ for (i = 0; i < znode->child_cnt - 1; i++) {
++ const union ubifs_key *key1, *key2;
++
++ key1 = &znode->zbranch[i].key;
++ key2 = &znode->zbranch[i + 1].key;
++
++ cmp = keys_cmp(c, key1, key2);
++ if (cmp > 0) {
++ dbg_err("bad key order (keys %d and %d)", i, i + 1);
++ err = 6;
++ goto out_dump;
++ } else if (cmp == 0 && !is_hash_key(c, key1)) {
++ /* These can only be keys with colliding hash */
++ dbg_err("keys %d and %d are not hashed but equivalent",
++ i, i + 1);
++ err = 7;
++ goto out_dump;
++ }
++ }
+
-+ return atmel_port->use_dma_tx;
-+}
-+#else
-+static bool atmel_use_dma_rx(struct uart_port *port)
-+{
-+ return false;
-+}
++ kfree(idx);
++ return 0;
+
-+static bool atmel_use_dma_tx(struct uart_port *port)
-+{
-+ return false;
++out_dump:
++ ubifs_err("bad indexing node at LEB %d:%d, error %d", lnum, offs, err);
++ dbg_dump_node(c, idx);
++ kfree(idx);
++ return -EINVAL;
+}
-+#endif
-+
- /*
- * Return TIOCSER_TEMT when transmitter FIFO and Shift register is empty.
- */
-@@ -142,8 +204,8 @@
- #ifdef CONFIG_ARCH_AT91RM9200
- if (cpu_is_at91rm9200()) {
- /*
-- * AT91RM9200 Errata #39: RTS0 is not internally connected to PA21.
-- * We need to drive the pin manually.
-+ * AT91RM9200 Errata #39: RTS0 is not internally connected
-+ * to PA21. We need to drive the pin manually.
- */
- if (port->mapbase == AT91RM9200_BASE_US0) {
- if (mctrl & TIOCM_RTS)
-@@ -204,7 +266,12 @@
- */
- static void atmel_stop_tx(struct uart_port *port)
- {
-- UART_PUT_IDR(port, ATMEL_US_TXRDY);
-+ if (atmel_use_dma_tx(port)) {
-+ /* disable PDC transmit */
-+ UART_PUT_PTCR(port, ATMEL_PDC_TXTDIS);
-+ UART_PUT_IDR(port, ATMEL_US_ENDTX | ATMEL_US_TXBUFE);
-+ } else
-+ UART_PUT_IDR(port, ATMEL_US_TXRDY);
- }
-
- /*
-@@ -212,7 +279,17 @@
- */
- static void atmel_start_tx(struct uart_port *port)
- {
-- UART_PUT_IER(port, ATMEL_US_TXRDY);
-+ if (atmel_use_dma_tx(port)) {
-+ if (UART_GET_PTSR(port) & ATMEL_PDC_TXTEN)
-+ /* The transmitter is already running. Yes, we
-+ really need this.*/
-+ return;
+
-+ UART_PUT_IER(port, ATMEL_US_ENDTX | ATMEL_US_TXBUFE);
-+ /* re-enable PDC transmit */
-+ UART_PUT_PTCR(port, ATMEL_PDC_TXTEN);
-+ } else
-+ UART_PUT_IER(port, ATMEL_US_TXRDY);
- }
-
- /*
-@@ -220,7 +297,12 @@
- */
- static void atmel_stop_rx(struct uart_port *port)
- {
-- UART_PUT_IDR(port, ATMEL_US_RXRDY);
-+ if (atmel_use_dma_rx(port)) {
-+ /* disable PDC receive */
-+ UART_PUT_PTCR(port, ATMEL_PDC_RXTDIS);
-+ UART_PUT_IDR(port, ATMEL_US_ENDRX | ATMEL_US_TIMEOUT);
-+ } else
-+ UART_PUT_IDR(port, ATMEL_US_RXRDY);
- }
-
- /*
-@@ -228,7 +310,8 @@
- */
- static void atmel_enable_ms(struct uart_port *port)
- {
-- UART_PUT_IER(port, ATMEL_US_RIIC | ATMEL_US_DSRIC | ATMEL_US_DCDIC | ATMEL_US_CTSIC);
-+ UART_PUT_IER(port, ATMEL_US_RIIC | ATMEL_US_DSRIC
-+ | ATMEL_US_DCDIC | ATMEL_US_CTSIC);
- }
-
- /*
-@@ -243,22 +326,63 @@
- }
-
- /*
-+ * Stores the incoming character in the ring buffer
++/**
++ * ubifs_load_znode - load znode to TNC cache.
++ * @c: UBIFS file-system description object
++ * @zbr: znode branch
++ * @parent: znode's parent
++ * @iip: index in parent
++ *
++ * This function loads znode pointed to by @zbr into the TNC cache and
++ * returns pointer to it in case of success and a negative error code in case
++ * of failure.
+ */
-+static void
-+atmel_buffer_rx_char(struct uart_port *port, unsigned int status,
-+ unsigned int ch)
++struct ubifs_znode *ubifs_load_znode(struct ubifs_info *c,
++ struct ubifs_zbranch *zbr,
++ struct ubifs_znode *parent, int iip)
+{
-+ struct atmel_uart_port *atmel_port = to_atmel_uart_port(port);
-+ struct circ_buf *ring = &atmel_port->rx_ring;
-+ struct atmel_uart_char *c;
++ int err;
++ struct ubifs_znode *znode;
+
-+ if (!CIRC_SPACE(ring->head, ring->tail, ATMEL_SERIAL_RINGSIZE))
-+ /* Buffer overflow, ignore char */
-+ return;
++ ubifs_assert(!zbr->znode);
++ /*
++ * A slab cache is not presently used for znodes because the znode size
++ * depends on the fanout which is stored in the superblock.
++ */
++ znode = kzalloc(c->max_znode_sz, GFP_NOFS);
++ if (!znode)
++ return ERR_PTR(-ENOMEM);
++
++ err = read_znode(c, zbr->lnum, zbr->offs, zbr->len, znode);
++ if (err)
++ goto out;
++
++ atomic_long_inc(&c->clean_zn_cnt);
++
++ /*
++ * Increment the global clean znode counter as well. It is OK that
++ * global and per-FS clean znode counters may be inconsistent for some
++ * short time (because we might be preempted at this point), the global
++ * one is only used in shrinker.
++ */
++ atomic_long_inc(&ubifs_clean_zn_cnt);
+
-+ c = &((struct atmel_uart_char *)ring->buf)[ring->head];
-+ c->status = status;
-+ c->ch = ch;
++ zbr->znode = znode;
++ znode->parent = parent;
++ znode->time = get_seconds();
++ znode->iip = iip;
+
-+ /* Make sure the character is stored before we update head. */
-+ smp_wmb();
++ return znode;
+
-+ ring->head = (ring->head + 1) & (ATMEL_SERIAL_RINGSIZE - 1);
++out:
++ kfree(znode);
++ return ERR_PTR(err);
+}
+
-+/*
-+ * Deal with parity, framing and overrun errors.
++/**
++ * ubifs_tnc_read_node - read a leaf node from the flash media.
++ * @c: UBIFS file-system description object
++ * @zbr: key and position of the node
++ * @node: node is returned here
++ *
++ * This function reads a node defined by @zbr from the flash media. Returns
++ * zero in case of success or a negative negative error code in case of
++ * failure.
+ */
-+static void atmel_pdc_rxerr(struct uart_port *port, unsigned int status)
++int ubifs_tnc_read_node(struct ubifs_info *c, struct ubifs_zbranch *zbr,
++ void *node)
+{
-+ /* clear error */
-+ UART_PUT_CR(port, ATMEL_US_RSTSTA);
++ union ubifs_key key1, *key = &zbr->key;
++ int err, type = key_type(c, key);
++ struct ubifs_wbuf *wbuf;
++
++ ubifs_assert(!zbr->leaf);
++
++ /*
++ * 'zbr' has to point to on-flash node. The node may sit in a bud and
++ * may even be in a write buffer, so we have to take care about this.
++ */
++ wbuf = ubifs_get_wbuf(c, zbr->lnum);
++ if (wbuf)
++ err = ubifs_read_node_wbuf(wbuf, node, type, zbr->len,
++ zbr->lnum, zbr->offs);
++ else
++ err = ubifs_read_node(c, node, type, zbr->len, zbr->lnum,
++ zbr->offs);
++
++ if (err) {
++ dbg_tnc("key %s", DBGKEY(key));
++ return err;
++ }
+
-+ if (status & ATMEL_US_RXBRK) {
-+ /* ignore side-effect */
-+ status &= ~(ATMEL_US_PARE | ATMEL_US_FRAME);
-+ port->icount.brk++;
++ /* Make sure the key of the read node is correct */
++ key_read(c, key, &key1);
++ if (memcmp(node + UBIFS_KEY_OFFSET, &key1, c->key_len)) {
++ ubifs_err("bad key in node at LEB %d:%d",
++ zbr->lnum, zbr->offs);
++ dbg_tnc("looked for key %s found node's key %s",
++ DBGKEY(key), DBGKEY1(&key1));
++ dbg_dump_node(c, node);
++ return -EINVAL;
+ }
-+ if (status & ATMEL_US_PARE)
-+ port->icount.parity++;
-+ if (status & ATMEL_US_FRAME)
-+ port->icount.frame++;
-+ if (status & ATMEL_US_OVRE)
-+ port->icount.overrun++;
++
++ return 0;
+}
+diff --exclude=.git -urN linux-2.6.25.6/fs/ubifs/ubifs.h avr32-2.6/fs/ubifs/ubifs.h
+--- linux-2.6.25.6/fs/ubifs/ubifs.h 1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/fs/ubifs/ubifs.h 2008-06-12 15:09:45.603817614 +0200
+@@ -0,0 +1,1605 @@
++/*
++ * This file is part of UBIFS.
++ *
++ * Copyright (C) 2006-2008 Nokia Corporation
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published by
++ * the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but WITHOUT
++ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
++ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
++ * more details.
++ *
++ * You should have received a copy of the GNU General Public License along with
++ * this program; if not, write to the Free Software Foundation, Inc., 51
++ * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
++ *
++ * Authors: Artem Bityutskiy (Битюцкий Артём)
++ * Adrian Hunter
++ */
++
++/* Implementation version 0.7 */
++
++#ifndef __UBIFS_H__
++#define __UBIFS_H__
++
++#include <asm/div64.h>
++#include <linux/statfs.h>
++#include <linux/fs.h>
++#include <linux/err.h>
++#include <linux/sched.h>
++#include <linux/vmalloc.h>
++#include <linux/spinlock.h>
++#include <linux/mutex.h>
++#include <linux/rwsem.h>
++#include <linux/mtd/ubi.h>
++#include <linux/pagemap.h>
++#include <linux/backing-dev.h>
++#include "ubifs-media.h"
++
++/* Version of this UBIFS implementation */
++#define UBIFS_VERSION 1
++
++/* Normal UBIFS messages */
++#define ubifs_msg(fmt, ...) \
++ printk(KERN_NOTICE "UBIFS: " fmt "\n", ##__VA_ARGS__)
++/* UBIFS error messages */
++#define ubifs_err(fmt, ...) \
++ printk(KERN_ERR "UBIFS error (pid %d): %s: " fmt "\n", current->pid, \
++ __func__, ##__VA_ARGS__)
++/* UBIFS warning messages */
++#define ubifs_warn(fmt, ...) \
++ printk(KERN_WARNING "UBIFS warning (pid %d): %s: " fmt "\n", \
++ current->pid, __func__, ##__VA_ARGS__)
++
++/* UBIFS file system VFS magic number */
++#define UBIFS_SUPER_MAGIC 0x24051905
++
++/* Number of UBIFS blocks per VFS page */
++#define UBIFS_BLOCKS_PER_PAGE (PAGE_CACHE_SIZE / UBIFS_BLOCK_SIZE)
++#define UBIFS_BLOCKS_PER_PAGE_SHIFT (PAGE_CACHE_SHIFT - UBIFS_BLOCK_SHIFT)
++
++/* "File system end of life" sequence number watermark */
++#define SQNUM_WARN_WATERMARK 0xFFFFFFFF00000000ULL
++#define SQNUM_WATERMARK 0xFFFFFFFFFF000000ULL
++
++/* Minimum amount of data UBIFS writes to the flash */
++#define MIN_WRITE_SZ (UBIFS_DATA_NODE_SZ + 8)
+
+/*
- * Characters received (called from interrupt handler)
- */
- static void atmel_rx_chars(struct uart_port *port)
- {
-- struct atmel_uart_port *atmel_port = (struct atmel_uart_port *) port;
-- struct tty_struct *tty = port->info->tty;
-- unsigned int status, ch, flg;
-+ struct atmel_uart_port *atmel_port = to_atmel_uart_port(port);
-+ unsigned int status, ch;
-
- status = UART_GET_CSR(port);
- while (status & ATMEL_US_RXRDY) {
- ch = UART_GET_CHAR(port);
-
-- port->icount.rx++;
--
-- flg = TTY_NORMAL;
--
- /*
- * note that the error handling code is
- * out of the main execution path
-@@ -266,15 +390,14 @@
- if (unlikely(status & (ATMEL_US_PARE | ATMEL_US_FRAME
- | ATMEL_US_OVRE | ATMEL_US_RXBRK)
- || atmel_port->break_active)) {
-- UART_PUT_CR(port, ATMEL_US_RSTSTA); /* clear error */
-+
-+ /* clear error */
-+ UART_PUT_CR(port, ATMEL_US_RSTSTA);
-+
- if (status & ATMEL_US_RXBRK
- && !atmel_port->break_active) {
-- status &= ~(ATMEL_US_PARE | ATMEL_US_FRAME); /* ignore side-effect */
-- port->icount.brk++;
- atmel_port->break_active = 1;
- UART_PUT_IER(port, ATMEL_US_RXBRK);
-- if (uart_handle_break(port))
-- goto ignore_char;
- } else {
- /*
- * This is either the end-of-break
-@@ -287,52 +410,30 @@
- status &= ~ATMEL_US_RXBRK;
- atmel_port->break_active = 0;
- }
-- if (status & ATMEL_US_PARE)
-- port->icount.parity++;
-- if (status & ATMEL_US_FRAME)
-- port->icount.frame++;
-- if (status & ATMEL_US_OVRE)
-- port->icount.overrun++;
--
-- status &= port->read_status_mask;
--
-- if (status & ATMEL_US_RXBRK)
-- flg = TTY_BREAK;
-- else if (status & ATMEL_US_PARE)
-- flg = TTY_PARITY;
-- else if (status & ATMEL_US_FRAME)
-- flg = TTY_FRAME;
- }
-
-- if (uart_handle_sysrq_char(port, ch))
-- goto ignore_char;
--
-- uart_insert_char(port, status, ATMEL_US_OVRE, ch, flg);
--
-- ignore_char:
-+ atmel_buffer_rx_char(port, status, ch);
- status = UART_GET_CSR(port);
- }
-
-- tty_flip_buffer_push(tty);
-+ tasklet_schedule(&atmel_port->tasklet);
- }
-
- /*
-- * Transmit characters (called from interrupt handler)
-+ * Transmit characters (called from tasklet with TXRDY interrupt
-+ * disabled)
- */
- static void atmel_tx_chars(struct uart_port *port)
- {
- struct circ_buf *xmit = &port->info->xmit;
-
-- if (port->x_char) {
-+ if (port->x_char && UART_GET_CSR(port) & ATMEL_US_TXRDY) {
- UART_PUT_CHAR(port, port->x_char);
- port->icount.tx++;
- port->x_char = 0;
-- return;
- }
-- if (uart_circ_empty(xmit) || uart_tx_stopped(port)) {
-- atmel_stop_tx(port);
-+ if (uart_circ_empty(xmit) || uart_tx_stopped(port))
- return;
-- }
-
- while (UART_GET_CSR(port) & ATMEL_US_TXRDY) {
- UART_PUT_CHAR(port, xmit->buf[xmit->tail]);
-@@ -345,8 +446,88 @@
- if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
- uart_write_wakeup(port);
-
-- if (uart_circ_empty(xmit))
-- atmel_stop_tx(port);
-+ if (!uart_circ_empty(xmit))
-+ UART_PUT_IER(port, ATMEL_US_TXRDY);
-+}
++ * Currently we do not support inode number overlapping and re-using, so this
++ * watermark defines dangerous inode number level. This should be fixed later,
++ * although it is difficult to exceed current limit. Another option is to use
++ * 64-bit inode numbers, but this means more overhead.
++ */
++#define INUM_WARN_WATERMARK 0xFFF00000
++#define INUM_WATERMARK 0xFFFFFF00
++
++/* Largest key size supported in this implementation */
++#define CUR_MAX_KEY_LEN UBIFS_SK_LEN
++
++/* Maximum number of entries in each LPT (LEB category) heap */
++#define LPT_HEAP_SZ 256
++
++/*
++ * Background thread name pattern. The numbers are UBI device and volume
++ * numbers.
++ */
++#define BGT_NAME_PATTERN "ubifs_bgt%d_%d"
++
++/* Default write-buffer synchronization timeout (5 secs) */
++#define DEFAULT_WBUF_TIMEOUT (5 * HZ)
++
++/* Maximum possible inode number (only 32-bit inodes are supported now) */
++#define MAX_INUM 0xFFFFFFFF
++
++/* Number of non-data journal heads */
++#define NONDATA_JHEADS_CNT 2
++
++/* Garbage collector head */
++#define GCHD 0
++/* Base journal head number */
++#define BASEHD 1
++/* First "general purpose" journal head */
++#define DATAHD 2
++
++/* 'No change' value for 'ubifs_change_lp()' */
++#define LPROPS_NC 0x80000001
++
++/*
++ * There is no notion of truncation key because truncation nodes do not exist
++ * in TNC. However, when replaying, it is handy to introduce fake "truncation"
++ * keys for truncation nodes because the code becomes simpler. So we define
++ * %UBIFS_TRUN_KEY type.
++ */
++#define UBIFS_TRUN_KEY UBIFS_KEY_TYPES_CNT
+
+/*
-+ * receive interrupt handler.
++ * How much a directory entry/extended attribute entry adds to the parent/host
++ * inode.
+ */
-+static void
-+atmel_handle_receive(struct uart_port *port, unsigned int pending)
-+{
-+ struct atmel_uart_port *atmel_port = to_atmel_uart_port(port);
-+
-+ if (atmel_use_dma_rx(port)) {
-+ /*
-+ * PDC receive. Just schedule the tasklet and let it
-+ * figure out the details.
-+ *
-+ * TODO: We're not handling error flags correctly at
-+ * the moment.
-+ */
-+ if (pending & (ATMEL_US_ENDRX | ATMEL_US_TIMEOUT)) {
-+ UART_PUT_IDR(port, (ATMEL_US_ENDRX
-+ | ATMEL_US_TIMEOUT));
-+ tasklet_schedule(&atmel_port->tasklet);
-+ }
++#define CALC_DENT_SIZE(name_len) ALIGN(UBIFS_DENT_NODE_SZ + (name_len) + 1, 8)
+
-+ if (pending & (ATMEL_US_RXBRK | ATMEL_US_OVRE |
-+ ATMEL_US_FRAME | ATMEL_US_PARE))
-+ atmel_pdc_rxerr(port, pending);
-+ }
++/* How much an extended attribute adds to the host inode */
++#define CALC_XATTR_BYTES(data_len) ALIGN(UBIFS_INO_NODE_SZ + (data_len) + 1, 8)
+
-+ /* Interrupt receive */
-+ if (pending & ATMEL_US_RXRDY)
-+ atmel_rx_chars(port);
-+ else if (pending & ATMEL_US_RXBRK) {
-+ /*
-+ * End of break detected. If it came along with a
-+ * character, atmel_rx_chars will handle it.
-+ */
-+ UART_PUT_CR(port, ATMEL_US_RSTSTA);
-+ UART_PUT_IDR(port, ATMEL_US_RXBRK);
-+ atmel_port->break_active = 0;
-+ }
-+}
++/*
++ * Znodes which were not touched for 'OLD_ZNODE_AGE' seconds are considered
++ * "old", and znode which were touched last 'YOUNG_ZNODE_AGE' seconds ago are
++ * considered "young". This is used by shrinker when selecting znode to trim
++ * off.
++ */
++#define OLD_ZNODE_AGE 20
++#define YOUNG_ZNODE_AGE 5
+
+/*
-+ * transmit interrupt handler. (Transmit is IRQF_NODELAY safe)
++ * Some compressors, like LZO, may end up with more data then the input buffer.
++ * So UBIFS always allocates larger output buffer, to be sure the compressor
++ * will not corrupt memory in case of worst case compression.
+ */
-+static void
-+atmel_handle_transmit(struct uart_port *port, unsigned int pending)
-+{
-+ struct atmel_uart_port *atmel_port = to_atmel_uart_port(port);
++#define WORST_COMPR_FACTOR 2
+
-+ if (atmel_use_dma_tx(port)) {
-+ /* PDC transmit */
-+ if (pending & (ATMEL_US_ENDTX | ATMEL_US_TXBUFE)) {
-+ UART_PUT_IDR(port, ATMEL_US_ENDTX | ATMEL_US_TXBUFE);
-+ tasklet_schedule(&atmel_port->tasklet);
-+ }
-+ } else {
-+ /* Interrupt transmit */
-+ if (pending & ATMEL_US_TXRDY) {
-+ UART_PUT_IDR(port, ATMEL_US_TXRDY);
-+ tasklet_schedule(&atmel_port->tasklet);
-+ }
-+ }
-+}
++/* Maximum expected tree height for use by bottom_up_buf */
++#define BOTTOM_UP_HEIGHT 64
+
+/*
-+ * status flags interrupt handler.
++ * Znode flags (actually, bit numbers which store the flags).
++ *
++ * DIRTY_ZNODE: znode is dirty
++ * COW_ZNODE: znode is being committed and a new instance of this znode has to
++ * be created before changing this znode
++ * OBSOLETE_ZNODE: znode is obsolete, which means it was deleted, but it is
++ * still in the commit list and the ongoing commit operation
++ * will commit it, and delete this znode after it is done
+ */
-+static void
-+atmel_handle_status(struct uart_port *port, unsigned int pending,
-+ unsigned int status)
-+{
-+ struct atmel_uart_port *atmel_port = to_atmel_uart_port(port);
-+
-+ if (pending & (ATMEL_US_RIIC | ATMEL_US_DSRIC | ATMEL_US_DCDIC
-+ | ATMEL_US_CTSIC)) {
-+ atmel_port->irq_status = status;
-+ tasklet_schedule(&atmel_port->tasklet);
-+ }
- }
-
- /*
-@@ -355,47 +536,255 @@
- static irqreturn_t atmel_interrupt(int irq, void *dev_id)
- {
- struct uart_port *port = dev_id;
-- struct atmel_uart_port *atmel_port = (struct atmel_uart_port *) port;
- unsigned int status, pending, pass_counter = 0;
-
-- status = UART_GET_CSR(port);
-- pending = status & UART_GET_IMR(port);
-- while (pending) {
-- /* Interrupt receive */
-- if (pending & ATMEL_US_RXRDY)
-- atmel_rx_chars(port);
-- else if (pending & ATMEL_US_RXBRK) {
-+ do {
-+ status = UART_GET_CSR(port);
-+ pending = status & UART_GET_IMR(port);
-+ if (!pending)
-+ break;
++enum {
++ DIRTY_ZNODE = 0,
++ COW_ZNODE = 1,
++ OBSOLETE_ZNODE = 2
++};
+
-+ atmel_handle_receive(port, pending);
-+ atmel_handle_status(port, pending, status);
-+ atmel_handle_transmit(port, pending);
-+ } while (pass_counter++ < ATMEL_ISR_PASS_LIMIT);
++/*
++ * Commit states.
++ *
++ * COMMIT_RESTING: commit is not wanted
++ * COMMIT_BACKGROUND: background commit has been requested
++ * COMMIT_REQUIRED: commit is required
++ * COMMIT_RUNNING_BACKGROUND: background commit is running
++ * COMMIT_RUNNING_REQUIRED: commit is running and it is required
++ * COMMIT_BROKEN: commit failed
++ */
++enum {
++ COMMIT_RESTING = 0,
++ COMMIT_BACKGROUND,
++ COMMIT_REQUIRED,
++ COMMIT_RUNNING_BACKGROUND,
++ COMMIT_RUNNING_REQUIRED,
++ COMMIT_BROKEN,
++};
+
-+ return IRQ_HANDLED;
-+}
++/*
++ * 'ubifs_scan_a_node()' return values.
++ *
++ * SCANNED_GARBAGE: scanned garbage
++ * SCANNED_EMPTY_SPACE: scanned empty space
++ * SCANNED_A_NODE: scanned a valid node
++ * SCANNED_A_CORRUPT_NODE: scanned a corrupted node
++ * SCANNED_A_BAD_PAD_NODE: scanned a padding node with invalid pad length
++ *
++ * Greater than zero means: 'scanned that number of padding bytes'
++ */
++enum {
++ SCANNED_GARBAGE = 0,
++ SCANNED_EMPTY_SPACE = -1,
++ SCANNED_A_NODE = -2,
++ SCANNED_A_CORRUPT_NODE = -3,
++ SCANNED_A_BAD_PAD_NODE = -4,
++};
+
+/*
-+ * Called from tasklet with ENDTX and TXBUFE interrupts disabled.
++ * LPT cnode flag bits.
++ *
++ * DIRTY_CNODE: cnode is dirty
++ * COW_CNODE: cnode is being committed and must be copied before writing
++ * OBSOLETE_CNODE: cnode is being committed and has been copied (or deleted),
++ * so it can (and must) be freed when the commit is finished
+ */
-+static void atmel_tx_dma(struct uart_port *port)
-+{
-+ struct atmel_uart_port *atmel_port = to_atmel_uart_port(port);
-+ struct circ_buf *xmit = &port->info->xmit;
-+ struct atmel_dma_buffer *pdc = &atmel_port->pdc_tx;
-+ int count;
++enum {
++ DIRTY_CNODE = 0,
++ COW_CNODE = 1,
++ OBSOLETE_CNODE = 2,
++};
+
-+ xmit->tail += pdc->ofs;
-+ xmit->tail &= UART_XMIT_SIZE - 1;
++/*
++ * Dirty flag bits (lpt_drty_flgs) for LPT special nodes.
++ *
++ * LTAB_DIRTY: ltab node is dirty
++ * LSAVE_DIRTY: lsave node is dirty
++ */
++enum {
++ LTAB_DIRTY = 1,
++ LSAVE_DIRTY = 2,
++};
+
-+ port->icount.tx += pdc->ofs;
-+ pdc->ofs = 0;
++/*
++ * Return codes used by the garbage collector.
++ * @LEB_FREED: the logical eraseblock was freed and is ready to use
++ * @LEB_FREED_IDX: indexing LEB was freed and can be used only after the commit
++ * @LEB_RETAINED: the logical eraseblock was freed and retained for GC purposes
++ */
++enum {
++ LEB_FREED,
++ LEB_FREED_IDX,
++ LEB_RETAINED,
++};
+
-+ if (!uart_circ_empty(xmit)) {
-+ /* more to transmit - setup next transfer */
++/**
++ * struct ubifs_old_idx - index node obsoleted since last commit start.
++ * @rb: rb-tree node
++ * @lnum: LEB number of obsoleted index node
++ * @offs: offset of obsoleted index node
++ */
++struct ubifs_old_idx {
++ struct rb_node rb;
++ int lnum;
++ int offs;
++};
+
-+ /* disable PDC transmit */
-+ UART_PUT_PTCR(port, ATMEL_PDC_TXTDIS);
-+ dma_sync_single_for_device(port->dev,
-+ pdc->dma_addr,
-+ pdc->dma_size,
-+ DMA_TO_DEVICE);
++/* The below union makes it easier to deal with keys */
++union ubifs_key {
++ uint8_t u8[CUR_MAX_KEY_LEN];
++ uint32_t u32[CUR_MAX_KEY_LEN/4];
++ uint64_t u64[CUR_MAX_KEY_LEN/8];
++ __le32 j32[CUR_MAX_KEY_LEN/4];
++};
+
-+ count = CIRC_CNT_TO_END(xmit->head, xmit->tail, UART_XMIT_SIZE);
-+ pdc->ofs = count;
++/**
++ * struct ubifs_scan_node - UBIFS scanned node information.
++ * @list: list of scanned nodes
++ * @key: key of node scanned (if it has one)
++ * @sqnum: sequence number
++ * @type: type of node scanned
++ * @offs: offset with LEB of node scanned
++ * @len: length of node scanned
++ * @node: raw node
++ */
++struct ubifs_scan_node {
++ struct list_head list;
++ union ubifs_key key;
++ unsigned long long sqnum;
++ int type;
++ int offs;
++ int len;
++ void *node;
++};
+
-+ UART_PUT_TPR(port, pdc->dma_addr + xmit->tail);
-+ UART_PUT_TCR(port, count);
-+ /* re-enable PDC transmit and interrupts */
-+ UART_PUT_PTCR(port, ATMEL_PDC_TXTEN);
-+ UART_PUT_IER(port, ATMEL_US_ENDTX | ATMEL_US_TXBUFE);
-+ } else {
-+ /* nothing left to transmit - disable the transmitter */
++/**
++ * struct ubifs_scan_leb - UBIFS scanned LEB information.
++ * @lnum: logical eraseblock number
++ * @nodes_cnt: number of nodes scanned
++ * @nodes: list of struct ubifs_scan_node
++ * @endpt: end point (and therefore the start of empty space)
++ * @ecc: read returned -EBADMSG
++ * @buf: buffer containing entire LEB scanned
++ */
++struct ubifs_scan_leb {
++ int lnum;
++ int nodes_cnt;
++ struct list_head nodes;
++ int endpt;
++ int ecc;
++ void *buf;
++};
+
-+ /* disable PDC transmit */
-+ UART_PUT_PTCR(port, ATMEL_PDC_TXTDIS);
-+ }
++/**
++ * struct ubifs_gced_idx_leb - garbage-collected indexing LEB.
++ * @list: list
++ * @lnum: LEB number
++ * @unmap: OK to unmap this LEB
++ *
++ * This data structure is used to temporary store garbage-collected indexing
++ * LEBs - they are not released immediately, but only after the next commit.
++ * This is needed to guarantee recoverability.
++ */
++struct ubifs_gced_idx_leb {
++ struct list_head list;
++ int lnum;
++ int unmap;
++};
+
-+ if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
-+ uart_write_wakeup(port);
-+}
++/**
++ * struct ubifs_inode - UBIFS in-memory inode description.
++ * @vfs_inode: VFS inode description object
++ * @creat_sqnum: sequence number at time of creation
++ * @xattr_size: summarized size of all extended attributes in bytes, protected
++ * by @inode->i_lock
++ * @xattr_cnt: count of extended attributes this inode has
++ * @xattr_names: sum of lengths of all extended attribute names belonging to
++ * this inode
++ * @dirty: non-zero if the inode is dirty
++ * @xattr: non-zero if this is an extended attribute inode
++ * @budgeted: non-zero if the inode has been budgeted (used for debugging)
++ * @budg_mutex: serializes inode budgeting and write-back
++ * @flags: inode flags (@UBIFS_COMPR_FL, etc)
++ * @compr_type: default compression type used for this inode
++ * @data_len: length of the data attached to the inode
++ * @data: inode's data
++ *
++ * UBIFS has its own inode mutex, besides the VFS 'i_mutex'. The reason for
++ * this is budgeting - UBIFS has to budget each operation. So, if an operation
++ * is going to mark an inode dirty, it has to allocate budget for this. It
++ * cannot just mark it dirty because there is no guarantee there will be enough
++ * flash space when it is time to write the inode back. This means that UBIFS
++ * has to have full control over "clean <-> dirty" transitions of inodes (and
++ * pages actually, but it is easy for pages, because we have
++ * 'ubifs_prepare_write()' which is called _before_ every page change). But
++ * unfortunately, VFS marks inodes dirty in many places, and it does not ask
++ * the file-system if it is allowed to do so (there is a notifier, but it is
++ * not enough), i.e., there is no mechanism to synchronize with this. So we
++ * introduce our own dirty flag to UBIFS inodes and our own inode mutex to
++ * serialize "clean <-> dirty" transitions.
++ */
++struct ubifs_inode {
++ struct inode vfs_inode;
++ unsigned long long creat_sqnum;
++ long long xattr_size;
++ int xattr_cnt;
++ int xattr_names;
++ unsigned int dirty:1;
++ unsigned int xattr:1;
++#ifdef CONFIG_UBIFS_FS_DEBUG
++ unsigned int budgeted:1;
++#endif
++ struct mutex budg_mutex;
++ int flags;
++ int compr_type;
++ int data_len;
++ void *data;
++};
+
-+static void atmel_rx_from_ring(struct uart_port *port)
-+{
-+ struct atmel_uart_port *atmel_port = to_atmel_uart_port(port);
-+ struct circ_buf *ring = &atmel_port->rx_ring;
-+ unsigned int flg;
-+ unsigned int status;
++/**
++ * struct ubifs_unclean_leb - records a LEB recovered under read-only mode.
++ * @list: list
++ * @lnum: LEB number of recovered LEB
++ * @endpt: offset where recovery ended
++ *
++ * This structure records a LEB identified during recovery that needs to be
++ * cleaned but was not because UBIFS was mounted read-only. The information
++ * is used to clean the LEB when remounting to read-write mode.
++ */
++struct ubifs_unclean_leb {
++ struct list_head list;
++ int lnum;
++ int endpt;
++};
+
-+ while (ring->head != ring->tail) {
-+ struct atmel_uart_char c;
++/*
++ * LEB properties flags.
++ *
++ * LPROPS_UNCAT: not categorized
++ * LPROPS_DIRTY: dirty > 0, not index
++ * LPROPS_DIRTY_IDX: dirty + free > UBIFS_CH_SZ and index
++ * LPROPS_FREE: free > 0, not empty, not index
++ * LPROPS_HEAP_CNT: number of heaps used for storing categorized LEBs
++ * LPROPS_EMPTY: LEB is empty, not taken
++ * LPROPS_FREEABLE: free + dirty == leb_size, not index, not taken
++ * LPROPS_FRDI_IDX: free + dirty == leb_size and index, may be taken
++ * LPROPS_CAT_MASK: mask for the LEB categories above
++ * LPROPS_TAKEN: LEB was taken (this flag is not saved on the media)
++ * LPROPS_INDEX: LEB contains indexing nodes (this flag also exists on flash)
++ */
++enum {
++ LPROPS_UNCAT = 0,
++ LPROPS_DIRTY = 1,
++ LPROPS_DIRTY_IDX = 2,
++ LPROPS_FREE = 3,
++ LPROPS_HEAP_CNT = 3,
++ LPROPS_EMPTY = 4,
++ LPROPS_FREEABLE = 5,
++ LPROPS_FRDI_IDX = 6,
++ LPROPS_CAT_MASK = 15,
++ LPROPS_TAKEN = 16,
++ LPROPS_INDEX = 32,
++};
+
-+ /* Make sure c is loaded after head. */
-+ smp_rmb();
++/**
++ * struct ubifs_lprops - logical eraseblock properties.
++ * @free: amount of free space in bytes
++ * @dirty: amount of dirty space in bytes
++ * @flags: LEB properties flags (see above)
++ * @lnum: LEB number
++ * @list: list of same-category lprops (for LPROPS_EMPTY and LPROPS_FREEABLE)
++ * @hpos: heap position in heap of same-category lprops (other categories)
++ */
++struct ubifs_lprops {
++ int free;
++ int dirty;
++ int flags;
++ int lnum;
++ union {
++ struct list_head list;
++ int hpos;
++ };
++};
+
-+ c = ((struct atmel_uart_char *)ring->buf)[ring->tail];
++/**
++ * struct ubifs_lpt_lprops - LPT logical eraseblock properties.
++ * @free: amount of free space in bytes
++ * @dirty: amount of dirty space in bytes
++ * @tgc: trivial GC flag (1 => unmap after commit end)
++ * @cmt: commit flag (1 => reserved for commit)
++ */
++struct ubifs_lpt_lprops {
++ int free;
++ int dirty;
++ unsigned tgc : 1;
++ unsigned cmt : 1;
++};
+
-+ ring->tail = (ring->tail + 1) & (ATMEL_SERIAL_RINGSIZE - 1);
++/**
++ * struct ubifs_lp_stats - statistics of eraseblocks in the main area.
++ * @empty_lebs: number of empty LEBs
++ * @taken_empty_lebs: number of taken LEBs
++ * @idx_lebs: number of indexing LEBs
++ * @total_free: total free space in bytes
++ * @total_dirty: total dirty space in bytes
++ * @total_used: total used space in bytes (includes only data LEBs)
++ * @total_dead: total dead space in bytes (includes only data LEBs)
++ * @total_dark: total dark space in bytes (includes only data LEBs)
++ *
++ * N.B. total_dirty and total_used are different to other total_* fields,
++ * because they account _all_ LEBs, not just data LEBs.
++ *
++ * 'taken_empty_lebs' counts the LEBs that are in the transient state of having
++ * been 'taken' for use but not yet written to. 'taken_empty_lebs' is needed
++ * to account correctly for gc_lnum, otherwise 'empty_lebs' could be used
++ * by itself (in which case 'unused_lebs' would be a better name). In the case
++ * of gc_lnum, it is 'taken' at mount time or whenever a LEB is retained by GC,
++ * but unlike other empty LEBs that are 'taken', it may not be written straight
++ * away (i.e. before the next commit start or unmount), so either gc_lnum must
++ * be specially accounted for, or the current approach followed i.e. count it
++ * under 'taken_empty_lebs'.
++ */
++struct ubifs_lp_stats {
++ int empty_lebs;
++ int taken_empty_lebs;
++ int idx_lebs;
++ long long total_free;
++ long long total_dirty;
++ long long total_used;
++ long long total_dead;
++ long long total_dark;
++};
+
-+ port->icount.rx++;
-+ status = c.status;
-+ flg = TTY_NORMAL;
++struct ubifs_nnode;
+
-+ /*
-+ * note that the error handling code is
-+ * out of the main execution path
-+ */
-+ if (unlikely(status & (ATMEL_US_PARE | ATMEL_US_FRAME
-+ | ATMEL_US_OVRE | ATMEL_US_RXBRK))) {
-+ if (status & ATMEL_US_RXBRK) {
-+ /* ignore side-effect */
-+ status &= ~(ATMEL_US_PARE | ATMEL_US_FRAME);
-+
-+ port->icount.brk++;
-+ if (uart_handle_break(port))
-+ continue;
-+ }
-+ if (status & ATMEL_US_PARE)
-+ port->icount.parity++;
-+ if (status & ATMEL_US_FRAME)
-+ port->icount.frame++;
-+ if (status & ATMEL_US_OVRE)
-+ port->icount.overrun++;
++/**
++ * struct ubifs_cnode - LEB Properties Tree common node.
++ * @parent: parent nnode
++ * @cnext: next cnode to commit
++ * @flags: flags (%DIRTY_LPT_NODE or %OBSOLETE_LPT_NODE)
++ * @iip: index in parent
++ * @level: level in the tree (zero for pnodes, greater than zero for nnodes)
++ * @num: node number
++ */
++struct ubifs_cnode {
++ struct ubifs_nnode *parent;
++ struct ubifs_cnode *cnext;
++ unsigned long flags;
++ int iip;
++ int level;
++ int num;
++};
+
-+ status &= port->read_status_mask;
++/**
++ * struct ubifs_pnode - LEB Properties Tree leaf node.
++ * @parent: parent nnode
++ * @cnext: next cnode to commit
++ * @flags: flags (%DIRTY_LPT_NODE or %OBSOLETE_LPT_NODE)
++ * @iip: index in parent
++ * @level: level in the tree (always zero for pnodes)
++ * @num: node number
++ * @lprops: LEB properties array
++ */
++struct ubifs_pnode {
++ struct ubifs_nnode *parent;
++ struct ubifs_cnode *cnext;
++ unsigned long flags;
++ int iip;
++ int level;
++ int num;
++ struct ubifs_lprops lprops[UBIFS_LPT_FANOUT];
++};
+
-+ if (status & ATMEL_US_RXBRK)
-+ flg = TTY_BREAK;
-+ else if (status & ATMEL_US_PARE)
-+ flg = TTY_PARITY;
-+ else if (status & ATMEL_US_FRAME)
-+ flg = TTY_FRAME;
-+ }
++/**
++ * struct ubifs_nbranch - LEB Properties Tree internal node branch.
++ * @lnum: LEB number of child
++ * @offs: offset of child
++ * @nnode: nnode child
++ * @pnode: pnode child
++ * @cnode: cnode child
++ */
++struct ubifs_nbranch {
++ int lnum;
++ int offs;
++ union {
++ struct ubifs_nnode *nnode;
++ struct ubifs_pnode *pnode;
++ struct ubifs_cnode *cnode;
++ };
++};
+
++/**
++ * struct ubifs_nnode - LEB Properties Tree internal node.
++ * @parent: parent nnode
++ * @cnext: next cnode to commit
++ * @flags: flags (%DIRTY_LPT_NODE or %OBSOLETE_LPT_NODE)
++ * @iip: index in parent
++ * @level: level in the tree (always greater than zero for nnodes)
++ * @num: node number
++ * @nbranch: branches to child nodes
++ */
++struct ubifs_nnode {
++ struct ubifs_nnode *parent;
++ struct ubifs_cnode *cnext;
++ unsigned long flags;
++ int iip;
++ int level;
++ int num;
++ struct ubifs_nbranch nbranch[UBIFS_LPT_FANOUT];
++};
+
-+ if (uart_handle_sysrq_char(port, c.ch))
-+ continue;
++/**
++ * struct ubifs_lpt_heap - heap of categorized lprops.
++ * @arr: heap array
++ * @cnt: number in heap
++ * @max_cnt: maximum number allowed in heap
++ *
++ * There are %LPROPS_HEAP_CNT heaps.
++ */
++struct ubifs_lpt_heap {
++ struct ubifs_lprops **arr;
++ int cnt;
++ int max_cnt;
++};
+
-+ uart_insert_char(port, status, ATMEL_US_OVRE, c.ch, flg);
-+ }
++/*
++ * Return codes for LPT scan callback function.
++ *
++ * LPT_SCAN_CONTINUE: continue scanning
++ * LPT_SCAN_ADD: add the LEB properties scanned to the tree in memory
++ * LPT_SCAN_STOP: stop scanning
++ */
++enum {
++ LPT_SCAN_CONTINUE = 0,
++ LPT_SCAN_ADD = 1,
++ LPT_SCAN_STOP = 2,
++};
+
-+ /*
-+ * Drop the lock here since it might end up calling
-+ * uart_start(), which takes the lock.
-+ */
-+ spin_unlock(&port->lock);
-+ tty_flip_buffer_push(port->info->tty);
-+ spin_lock(&port->lock);
-+}
++struct ubifs_info;
+
-+static void atmel_rx_from_dma(struct uart_port *port)
-+{
-+ struct atmel_uart_port *atmel_port = to_atmel_uart_port(port);
-+ struct tty_struct *tty = port->info->tty;
-+ struct atmel_dma_buffer *pdc;
-+ int rx_idx = atmel_port->pdc_rx_idx;
-+ unsigned int head;
-+ unsigned int tail;
-+ unsigned int count;
++/* Callback used by the 'ubifs_lpt_scan_nolock()' function */
++typedef int (*ubifs_lpt_scan_callback)(struct ubifs_info *c,
++ const struct ubifs_lprops *lprops,
++ int in_tree, void *data);
+
-+ do {
-+ /* Reset the UART timeout early so that we don't miss one */
-+ UART_PUT_CR(port, ATMEL_US_STTTO);
++/**
++ * struct ubifs_wbuf - UBIFS write-buffer.
++ * @c: UBIFS file-system description object
++ * @buf: write-buffer (of min. flash I/O unit size)
++ * @lnum: logical eraseblock number the write-buffer points to
++ * @offs: write-buffer offset in this logical eraseblock
++ * @avail: number of bytes available in the write-buffer
++ * @used: number of used bytes in the write-buffer
++ * @dtype: type of data stored in this LEB (%UBI_LONGTERM, %UBI_SHORTTERM,
++ * %UBI_UNKNOWN)
++ * @jhead: journal head the mutex belongs to (note, needed only to shut lockdep
++ * up by 'mutex_lock_nested()).
++ * @sync_callback: write-buffer synchronization callback
++ * @io_mutex: serializes write-buffer I/O
++ * @lock: serializes @buf, @lnum, @offs, @avail, @used, @next_ino and @inodes
++ * fields
++ * @timer: write-buffer timer
++ * @timeout: timer expire interval in jiffies
++ * @need_sync: it is set if its timer expired and needs sync
++ * @next_ino: points to the next position of the following inode number
++ * @inodes: stores the inode numbers of the nodes which are in wbuf
++ *
++ * The write-buffer synchronization callback is called when the write-buffer is
++ * synchronized in order to notify how much space was wasted due to
++ * write-buffer padding and how much free space is left in the LEB.
++ *
++ * Note: the fields @buf, @lnum, @offs, @avail and @used can be read under
++ * spin-lock or mutex because they are written under both mutex and spin-lock.
++ * @buf is appended to under mutex but overwritten under both mutex and
++ * spin-lock. Thus the data between @buf and @buf + @used can be read under
++ * spinlock.
++ */
++struct ubifs_wbuf {
++ struct ubifs_info *c;
++ void *buf;
++ int lnum;
++ int offs;
++ int avail;
++ int used;
++ int dtype;
++ int jhead;
++ int (*sync_callback)(struct ubifs_info *c, int lnum, int free, int pad);
++ struct mutex io_mutex;
++ spinlock_t lock;
++ struct timer_list timer;
++ int timeout;
++ int need_sync;
++ int next_ino;
++ ino_t *inodes;
++};
+
-+ pdc = &atmel_port->pdc_rx[rx_idx];
-+ head = UART_GET_RPR(port) - pdc->dma_addr;
-+ tail = pdc->ofs;
++/**
++ * struct ubifs_bud - bud logical eraseblock.
++ * @lnum: logical eraseblock number
++ * @start: where the (uncommitted) bud data starts
++ * @jhead: journal head number this bud belongs to
++ * @list: link in the list buds belonging to the same journal head
++ * @rb: link in the tree of all buds
++ */
++struct ubifs_bud {
++ int lnum;
++ int start;
++ int jhead;
++ struct list_head list;
++ struct rb_node rb;
++};
+
-+ /* If the PDC has switched buffers, RPR won't contain
-+ * any address within the current buffer. Since head
-+ * is unsigned, we just need a one-way comparison to
-+ * find out.
-+ *
-+ * In this case, we just need to consume the entire
-+ * buffer and resubmit it for DMA. This will clear the
-+ * ENDRX bit as well, so that we can safely re-enable
-+ * all interrupts below.
-+ */
-+ head = min(head, pdc->dma_size);
-+
-+ if (likely(head != tail)) {
-+ dma_sync_single_for_cpu(port->dev, pdc->dma_addr,
-+ pdc->dma_size, DMA_FROM_DEVICE);
-+
- /*
-- * End of break detected. If it came along
-- * with a character, atmel_rx_chars will
-- * handle it.
-+ * head will only wrap around when we recycle
-+ * the DMA buffer, and when that happens, we
-+ * explicitly set tail to 0. So head will
-+ * always be greater than tail.
- */
-- UART_PUT_CR(port, ATMEL_US_RSTSTA);
-- UART_PUT_IDR(port, ATMEL_US_RXBRK);
-- atmel_port->break_active = 0;
-+ count = head - tail;
++/**
++ * struct ubifs_jhead - journal head.
++ * @wbuf: head's write-buffer
++ * @buds_list: list of bud LEBs belonging to this journal head
++ *
++ * Note, the @buds list is protected by the @c->buds_lock.
++ */
++struct ubifs_jhead {
++ struct ubifs_wbuf wbuf;
++ struct list_head buds_list;
++};
+
-+ tty_insert_flip_string(tty, pdc->buf + pdc->ofs, count);
++/**
++ * struct ubifs_zbranch - key/coordinate/length branch stored in znodes.
++ * @key: key
++ * @znode: znode address in memory
++ * @lnum: LEB number of the indexing node
++ * @offs: offset of the indexing node within @lnum
++ * @len: target node length
++ */
++struct ubifs_zbranch {
++ union ubifs_key key;
++ union {
++ struct ubifs_znode *znode;
++ void *leaf;
++ };
++ int lnum;
++ int offs;
++ int len;
++};
+
-+ dma_sync_single_for_device(port->dev, pdc->dma_addr,
-+ pdc->dma_size, DMA_FROM_DEVICE);
++/**
++ * struct ubifs_znode - in-memory representation of an indexing node.
++ * @parent: parent znode or NULL if it is the root
++ * @cnext: next znode to commit
++ * @flags: znode flags (%DIRTY_ZNODE, %COW_ZNODE or %OBSOLETE_ZNODE)
++ * @time: last access time (seconds)
++ * @level: level of the entry in the TNC tree
++ * @child_cnt: count of child znodes
++ * @iip: index in parent's zbranch array
++ * @alt: lower bound of key range has altered i.e. child inserted at slot 0
++ * @lnum: LEB number of the corresponding indexing node
++ * @offs: offset of the corresponding indexing node
++ * @len: length of the corresponding indexing node
++ * @zbranch: array of znode branches (@c->fanout elements)
++ */
++struct ubifs_znode {
++ struct ubifs_znode *parent;
++ struct ubifs_znode *cnext;
++ unsigned long flags;
++ unsigned long time;
++ int level;
++ int child_cnt;
++ int iip;
++ int alt;
++#ifdef CONFIG_UBIFS_FS_DEBUG
++ int lnum, offs, len;
++#endif
++ struct ubifs_zbranch zbranch[];
++};
+
-+ port->icount.rx += count;
-+ pdc->ofs = head;
-+ }
++/**
++ * struct ubifs_node_range - node length range description data structure.
++ * @len: fixed node length
++ * @min_len: minimum possible node length
++ * @max_len: maximum possible node length
++ *
++ * If @max_len is %0, the node has fixed length @len.
++ */
++struct ubifs_node_range {
++ union {
++ int len;
++ int min_len;
++ };
++ int max_len;
++};
+
-+ /*
-+ * If the current buffer is full, we need to check if
-+ * the next one contains any additional data.
-+ */
-+ if (head >= pdc->dma_size) {
-+ pdc->ofs = 0;
-+ UART_PUT_RNPR(port, pdc->dma_addr);
-+ UART_PUT_RNCR(port, pdc->dma_size);
++/**
++ * struct ubifs_compressor - UBIFS compressor description structure.
++ * @compr_type: compressor type (%UBIFS_COMPR_LZO, etc)
++ * @cc: cryptoapi compressor handle
++ * @comp_mutex: mutex used during compression
++ * @decomp_mutex: mutex used during decompression
++ * @name: compressor name
++ * @capi_name: cryptoapi compressor name
++ */
++struct ubifs_compressor {
++ int compr_type;
++ struct crypto_comp *cc;
++ struct mutex *comp_mutex;
++ struct mutex *decomp_mutex;
++ const char *name;
++ const char *capi_name;
++};
+
-+ rx_idx = !rx_idx;
-+ atmel_port->pdc_rx_idx = rx_idx;
- }
-+ } while (head >= pdc->dma_size);
++/**
++ * struct ubifs_budget_req - budget requirements of an operation.
++ *
++ * @new_ino: non-zero if the operation adds a new inode
++ * @dirtied_ino: how many inodes the operation makes dirty
++ * @new_page: non-zero if the operation adds a new page
++ * @dirtied_page: non-zero if the operation makes a page dirty
++ * @new_dent: non-zero if the operation adds a new directory entry
++ * @mod_dent: non-zero if the operation removes or modifies an existing
++ * directory entry
++ * @new_ino_d: now much data newly created inode contains
++ * @dirtied_ino_d: now much data dirtied inode contains
++ * @idx_growth: how much the index will supposedly grow
++ * @data_growth: how much new data the operation will supposedly add
++ * @dd_growth: how much data that makes other data dirty the operation will
++ * supposedly add
++ *
++ * @idx_growth, @data_growth and @dd_growth are not used in budget request. The
++ * budgeting subsystem caches index and data growth values there to avoid
++ * re-calculating them when the budget is released. However, if @idx_growth is
++ * %-1, it is calculated by the release function using other fields.
++ *
++ * An inode may contain 4KiB of data at max., thus the widths of @new_ino_d
++ * is 13 bits, and @dirtied_ino_d - 15, because up to 4 inodes may be made
++ * dirty by the re-name operation.
++ */
++struct ubifs_budget_req {
++ unsigned int new_ino:1;
++ unsigned int dirtied_ino:4;
++ unsigned int new_page:1;
++ unsigned int dirtied_page:1;
++ unsigned int new_dent:1;
++ unsigned int mod_dent:1;
++ unsigned int new_ino_d:13;
++ unsigned int dirtied_ino_d:15;
++ int idx_growth;
++ int data_growth;
++ int dd_growth;
++};
+
-+ /*
-+ * Drop the lock here since it might end up calling
-+ * uart_start(), which takes the lock.
-+ */
-+ spin_unlock(&port->lock);
-+ tty_flip_buffer_push(tty);
-+ spin_lock(&port->lock);
++/**
++ * struct ubifs_orphan - stores the inode number of an orphan.
++ * @rb: rb-tree node of rb-tree of orphans sorted by inode number
++ * @list: list head of list of orphans in order added
++ * @new_list: list head of list of orphans added since the last commit
++ * @cnext: next orphan to commit
++ * @dnext: next orphan to delete
++ * @inum: inode number
++ * @new: %1 => added since the last commit, otherwise %0
++ */
++struct ubifs_orphan {
++ struct rb_node rb;
++ struct list_head list;
++ struct list_head new_list;
++ struct ubifs_orphan *cnext;
++ struct ubifs_orphan *dnext;
++ ino_t inum;
++ int new;
++};
+
-+ UART_PUT_IER(port, ATMEL_US_ENDRX | ATMEL_US_TIMEOUT);
-+}
-
-- // TODO: All reads to CSR will clear these interrupts!
-- if (pending & ATMEL_US_RIIC) port->icount.rng++;
-- if (pending & ATMEL_US_DSRIC) port->icount.dsr++;
-- if (pending & ATMEL_US_DCDIC)
-+/*
-+ * tasklet handling tty stuff outside the interrupt handler.
++/**
++ * struct ubifs_mount_opts - UBIFS-specific mount options information.
++ * @unmount_mode: selected unmount mode (%0 default, %1 normal, %2 fast)
+ */
-+static void atmel_tasklet_func(unsigned long data)
-+{
-+ struct uart_port *port = (struct uart_port *)data;
-+ struct atmel_uart_port *atmel_port = to_atmel_uart_port(port);
-+ unsigned int status;
-+ unsigned int status_change;
++struct ubifs_mount_opts {
++ unsigned int unmount_mode:2;
++};
+
-+ /* The interrupt handler does not take the lock */
-+ spin_lock(&port->lock);
++/**
++ * struct ubifs_info - UBIFS file-system description data structure
++ * (per-superblock).
++ * @vfs_sb: VFS @struct super_block object
++ *
++ * @highest_inum: highest used inode number
++ * @vfs_gen: VFS inode generation counter
++ * @max_sqnum: current global sequence number
++ * @cmt_no: commit number (last successfully completed commit)
++ * @cnt_lock: protects @highest_inum, @vfs_gen, and @max_sqnum counters
++ * @fmt_version: UBIFS on-flash format version
++ * @uuid: UUID from super block
++ *
++ * @lhead_lnum: log head logical eraseblock number
++ * @lhead_offs: log head offset
++ * @ltail_lnum: log tail logical eraseblock number (offset is always 0)
++ * @log_mutex: protects the log, @lhead_lnum, @lhead_offs, @ltail_lnum, and
++ * @bud_bytes
++ * @min_log_bytes: minimum required number of bytes in the log
++ * @cmt_bud_bytes: used during commit to temporarily amount of bytes in
++ * committed buds
++ *
++ * @buds: tree of all buds indexed by bud LEB number
++ * @bud_bytes: how many bytes of flash is used by buds
++ * @buds_lock: protects the @buds tree, @bud_bytes, and per-journal head bud
++ * lists
++ * @jhead_cnt: count of journal heads
++ * @jheads: journal heads (head zero is base head)
++ * @max_bud_bytes: maximum number of bytes allowed in buds
++ * @bg_bud_bytes: number of bud bytes when background commit is initiated
++ * @old_buds: buds to be released after commit ends
++ * @max_bud_cnt: maximum number of buds
++ *
++ * @commit_sem: synchronizes committer with other processes
++ * @cmt_state: commit state
++ * @cs_lock: commit state lock
++ * @cmt_wq: wait queue to sleep on if the log is full and a commit is running
++ * @fast_unmount: do not run journal commit before unmounting
++ * @big_lpt: flag that LPT is too big to write whole during commit
++ *
++ * @tnc_mutex: protects the Tree Node Cache (TNC), @zroot, @cnext, @enext, and
++ * @calc_idx_sz
++ * @zroot: zbranch which points to the root index node and znode
++ * @cnext: next znode to commit
++ * @enext: next znode to commit to empty space
++ * @gap_lebs: array of LEBs used by the in-gaps commit method
++ * @cbuf: commit buffer
++ * @ileb_buf: buffer for commit in-the-gaps method
++ * @ileb_len: length of data in ileb_buf
++ * @ihead_lnum: LEB number of index head
++ * @ihead_offs: offset of index head
++ * @ilebs: pre-allocated index LEBs
++ * @ileb_cnt: number of pre-allocated index LEBs
++ * @ileb_nxt: next pre-allocated index LEBs
++ * @old_idx: tree of index nodes obsoleted since the last commit start
++ * @bottom_up_buf: a buffer which is used by 'dirty_cow_bottom_up()' in tnc.c
++ * @new_ihead_lnum: used by debugging to check ihead_lnum
++ * @new_ihead_offs: used by debugging to check ihead_offs
++ *
++ * @mst_node: master node
++ * @mst_offs: offset of valid master node
++ * @mst_mutex: protects the master node area, @mst_node, and @mst_offs
++ *
++ * @log_lebs: number of logical eraseblocks in the log
++ * @log_bytes: log size in bytes
++ * @log_last: last LEB of the log
++ * @lpt_lebs: number of LEBs used for lprops table
++ * @lpt_first: first LEB of the lprops table area
++ * @lpt_last: last LEB of the lprops table area
++ * @orph_lebs: number of LEBs used for the orphan area
++ * @orph_first: first LEB of the orphan area
++ * @orph_last: last LEB of the orphan area
++ * @main_lebs: count of LEBs in the main area
++ * @main_first: first LEB of the main area
++ * @main_bytes: main area size in bytes
++ * @default_compr: default compression type
++ *
++ * @key_hash_type: type of the key hash
++ * @key_hash: direntry key hash function
++ * @key_fmt: key format
++ * @key_len: key length
++ * @fanout: fanout of the index tree (number of links per indexing node)
++ *
++ * @min_io_size: minimal input/output unit size
++ * @min_io_shift: number of bits in @min_io_size minus one
++ * @leb_size: logical eraseblock size in bytes
++ * @half_leb_size: half LEB size
++ * @leb_cnt: count of logical eraseblocks
++ * @max_leb_cnt: maximum count of logical eraseblocks
++ * @old_leb_cnt: count of logical eraseblocks before resize
++ * @ro_media: the underlying UBI volume is read-only
++ *
++ * @dirty_pg_cnt: number of dirty pages (not used)
++ * @dirty_ino_cnt: number of dirty inodes (not used)
++ * @dirty_zn_cnt: number of dirty znodes
++ * @clean_zn_cnt: number of clean znodes
++ *
++ * @budg_idx_growth: amount of bytes budgeted for index growth
++ * @budg_data_growth: amount of bytes budgeted for cached data
++ * @budg_dd_growth: amount of bytes budgeted for cached data that will make
++ * other data dirty
++ * @budg_uncommitted_idx: amount of bytes were budgeted for growth of the index,
++ * but which still have to be taken into account because
++ * the index has not been committed so far
++ * @space_lock: protects @budg_idx_growth, @budg_data_growth, @budg_dd_growth,
++ * @budg_uncommited_idx, @min_idx_lebs, @old_idx_sz, and @lst;
++ * @min_idx_lebs: minimum number of LEBs required for the index
++ * @old_idx_sz: size of index on flash
++ * @calc_idx_sz: temporary variable which is used to calculate new index size
++ * (contains accurate new index size at end of TNC commit start)
++ * @lst: lprops statistics
++ *
++ * @page_budget: budget for a page
++ * @inode_budget: budget for an inode
++ * @dent_budget: budget for a directory entry
++ *
++ * @ref_node_alsz: size of the LEB reference node aligned to the min. flash
++ * I/O unit
++ * @mst_node_alsz: master node aligned size
++ * @min_idx_node_sz: minimum indexing node aligned on 8-bytes boundary
++ * @max_idx_node_sz: maximum indexing node aligned on 8-bytes boundary
++ * @max_inode_sz: maximum possible inode size in bytes
++ * @max_znode_sz: size of znode in bytes
++ * @dead_wm: LEB dead space watermark
++ * @dark_wm: LEB dark space watermark
++ * @block_cnt: count of 4KiB blocks on the FS
++ *
++ * @ranges: UBIFS node length ranges
++ * @ubi: UBI volume descriptor
++ * @di: UBI device information
++ * @vi: UBI volume information
++ *
++ * @orph_tree: rb-tree of orphan inode numbers
++ * @orph_list: list of orphan inode numbers in order added
++ * @orph_new: list of orphan inode numbers added since last commit
++ * @orph_cnext: next orphan to commit
++ * @orph_dnext: next orphan to delete
++ * @orphan_lock: lock for orph_tree and orph_new
++ * @orph_buf: buffer for orphan nodes
++ * @new_orphans: number of orphans since last commit
++ * @cmt_orphans: number of orphans being committed
++ * @tot_orphans: number of orphans in the rb_tree
++ * @max_orphans: maximum number of orphans allowed
++ * @ohead_lnum: orphan head LEB number
++ * @ohead_offs: orphan head offset
++ * @no_orphs: non-zero if there are no orphans
++ *
++ * @bgt: UBIFS background thread
++ * @bgt_name: background thread name
++ * @need_bgt: if background thread should run
++ * @need_wbuf_sync: if write-buffers have to be synchronized
++ *
++ * @gc_lnum: LEB number used for garbage collection
++ * @sbuf: a buffer of LEB size used by GC and replay for scanning
++ * @idx_gc: list of index LEBs that have been garbage collected
++ * @idx_gc_cnt: number of elements on the idx_gc list
++ *
++ * @infos_list: links all 'ubifs_info' objects
++ * @umount_mutex: serializes shrinker and un-mount
++ * @shrinker_run_no: shrinker run number
++ *
++ * @space_bits: number of bits needed to record free or dirty space
++ * @lpt_lnum_bits: number of bits needed to record a LEB number in the LPT
++ * @lpt_offs_bits: number of bits needed to record an offset in the LPT
++ * @lpt_spc_bits: number of bits needed to space in the LPT
++ * @pcnt_bits: number of bits needed to record pnode or nnode number
++ * @lnum_bits: number of bits needed to record LEB number
++ * @nnode_sz: size of on-flash nnode
++ * @pnode_sz: size of on-flash pnode
++ * @ltab_sz: size of on-flash LPT lprops table
++ * @lsave_sz: size of on-flash LPT save table
++ * @pnode_cnt: number of pnodes
++ * @nnode_cnt: number of nnodes
++ * @lpt_hght: height of the LPT
++ * @pnodes_have: number of pnodes in memory
++ *
++ * @lp_mutex: protects lprops table and all the other lprops-related fields
++ * @lpt_lnum: LEB number of the root nnode of the LPT
++ * @lpt_offs: offset of the root nnode of the LPT
++ * @nhead_lnum: LEB number of LPT head
++ * @nhead_offs: offset of LPT head
++ * @lpt_drty_flgs: dirty flags for LPT special nodes e.g. ltab
++ * @dirty_nn_cnt: number of dirty nnodes
++ * @dirty_pn_cnt: number of dirty pnodes
++ * @lpt_sz: LPT size
++ * @lpt_nod_buf: buffer for an on-flash nnode or pnode
++ * @lpt_buf: buffer of LEB size used by LPT
++ * @nroot: address in memory of the root nnode of the LPT
++ * @lpt_cnext: next LPT node to commit
++ * @lpt_heap: array of heaps of categorized lprops
++ * @dirty_idx: a (reverse sorted) copy of the LPROPS_DIRTY_IDX heap as at
++ * previous commit start
++ * @uncat_list: list of un-categorized LEBs
++ * @empty_list: list of empty LEBs
++ * @freeable_list: list of freeable non-index LEBs (free + dirty == leb_size)
++ * @frdi_idx_list: list of freeable index LEBs (free + dirty == leb_size)
++ * @freeable_cnt: number of freeable LEBs in @freeable_list
++ *
++ * @ltab_lnum: LEB number of LPT's own lprops table
++ * @ltab_offs: offset of LPT's own lprops table
++ * @ltab: LPT's own lprops table
++ * @ltab_cmt: LPT's own lprops table (commit copy)
++ * @lsave_cnt: number of LEB numbers in LPT's save table
++ * @lsave_lnum: LEB number of LPT's save table
++ * @lsave_offs: offset of LPT's save table
++ * @lsave: LPT's save table
++ * @lscan_lnum: LEB number of last LPT scan
++ *
++ * @rp_size: size of the reserved pool in bytes
++ * @report_rp_size: size of the reserved pool reported to userspace
++ * @rp_uid: reserved pool user ID
++ * @rp_gid: reserved pool group ID
++ *
++ * @empty: if the UBI device is empty
++ * @replay_tree: temporary tree used during journal replay
++ * @replay_list: temporary list used during journal replay
++ * @replay_buds: list of buds to replay
++ * @cs_sqnum: sequence number of first node in the log (commit start node)
++ * @replay_sqnum: sequence number of node currently being replayed
++ * @need_recovery: file-system needs recovery
++ * @replaying: set to %1 during journal replay
++ * @unclean_leb_list: LEBs to recover when mounting ro to rw
++ * @rcvrd_mst_node: recovered master node to write when mounting ro to rw
++ * @size_tree: inode size information for recovery
++ * @remounting_rw: set while remounting from ro to rw (sb flags have MS_RDONLY)
++ * @mount_opts: UBIFS-specific mount options
++ *
++ * @dbg_buf: a buffer of LEB size used for debugging purposes
++ * @old_zroot: old index root - used by 'dbg_check_old_index()'
++ * @old_zroot_level: old index root level - used by 'dbg_check_old_index()'
++ * @old_zroot_sqnum: old index root sqnum - used by 'dbg_check_old_index()'
++ * @failure_mode: failure mode for recovery testing
++ * @fail_delay: 0=>don't delay, 1=>delay a time, 2=>delay a number of calls
++ * @fail_timeout: time in jiffies when delay of failure mode expires
++ * @fail_cnt: current number of calls to failure mode I/O functions
++ * @fail_cnt_max: number of calls by which to delay failure mode
++ */
++struct ubifs_info {
++ struct super_block *vfs_sb;
++
++ ino_t highest_inum;
++ unsigned int vfs_gen;
++ unsigned long long max_sqnum;
++ unsigned long long cmt_no;
++ spinlock_t cnt_lock;
++ int fmt_version;
++ unsigned char uuid[16];
++
++ int lhead_lnum;
++ int lhead_offs;
++ int ltail_lnum;
++ struct mutex log_mutex;
++ int min_log_bytes;
++ long long cmt_bud_bytes;
++
++ struct rb_root buds;
++ long long bud_bytes;
++ spinlock_t buds_lock;
++ int jhead_cnt;
++ struct ubifs_jhead *jheads;
++ long long max_bud_bytes;
++ long long bg_bud_bytes;
++ struct list_head old_buds;
++ int max_bud_cnt;
++
++ struct rw_semaphore commit_sem;
++ int cmt_state;
++ spinlock_t cs_lock;
++ wait_queue_head_t cmt_wq;
++ unsigned int fast_unmount:1;
++ unsigned int big_lpt:1;
++
++ struct mutex tnc_mutex;
++ struct ubifs_zbranch zroot;
++ struct ubifs_znode *cnext;
++ struct ubifs_znode *enext;
++ int *gap_lebs;
++ void *cbuf;
++ void *ileb_buf;
++ int ileb_len;
++ int ihead_lnum;
++ int ihead_offs;
++ int *ilebs;
++ int ileb_cnt;
++ int ileb_nxt;
++ struct rb_root old_idx;
++ int *bottom_up_buf;
++#ifdef CONFIG_UBIFS_FS_DEBUG
++ int new_ihead_lnum;
++ int new_ihead_offs;
++#endif
+
-+ if (atmel_use_dma_tx(port))
-+ atmel_tx_dma(port);
-+ else
-+ atmel_tx_chars(port);
-+
-+ status = atmel_port->irq_status;
-+ status_change = status ^ atmel_port->irq_status_prev;
-+
-+ if (status_change & (ATMEL_US_RI | ATMEL_US_DSR
-+ | ATMEL_US_DCD | ATMEL_US_CTS)) {
-+ /* TODO: All reads to CSR will clear these interrupts! */
-+ if (status_change & ATMEL_US_RI)
-+ port->icount.rng++;
-+ if (status_change & ATMEL_US_DSR)
-+ port->icount.dsr++;
-+ if (status_change & ATMEL_US_DCD)
- uart_handle_dcd_change(port, !(status & ATMEL_US_DCD));
-- if (pending & ATMEL_US_CTSIC)
-+ if (status_change & ATMEL_US_CTS)
- uart_handle_cts_change(port, !(status & ATMEL_US_CTS));
-- if (pending & (ATMEL_US_RIIC | ATMEL_US_DSRIC | ATMEL_US_DCDIC | ATMEL_US_CTSIC))
-- wake_up_interruptible(&port->info->delta_msr_wait);
--
-- /* Interrupt transmit */
-- if (pending & ATMEL_US_TXRDY)
-- atmel_tx_chars(port);
-
-- if (pass_counter++ > ATMEL_ISR_PASS_LIMIT)
-- break;
-+ wake_up_interruptible(&port->info->delta_msr_wait);
-
-- status = UART_GET_CSR(port);
-- pending = status & UART_GET_IMR(port);
-+ atmel_port->irq_status_prev = status;
- }
-- return IRQ_HANDLED;
++ struct ubifs_mst_node *mst_node;
++ int mst_offs;
++ struct mutex mst_mutex;
++
++ int log_lebs;
++ long long log_bytes;
++ int log_last;
++ int lpt_lebs;
++ int lpt_first;
++ int lpt_last;
++ int orph_lebs;
++ int orph_first;
++ int orph_last;
++ int main_lebs;
++ int main_first;
++ long long main_bytes;
++ int default_compr;
++
++ uint8_t key_hash_type;
++ uint32_t (*key_hash)(const char *str, int len);
++ int key_fmt;
++ int key_len;
++ int fanout;
++
++ int min_io_size;
++ int min_io_shift;
++ int leb_size;
++ int half_leb_size;
++ int leb_cnt;
++ int max_leb_cnt;
++ int old_leb_cnt;
++ int ro_media;
++
++ atomic_long_t dirty_pg_cnt;
++ atomic_long_t dirty_ino_cnt;
++ atomic_long_t dirty_zn_cnt;
++ atomic_long_t clean_zn_cnt;
++
++ long long budg_idx_growth;
++ long long budg_data_growth;
++ long long budg_dd_growth;
++ long long budg_uncommitted_idx;
++ spinlock_t space_lock;
++ int min_idx_lebs;
++ unsigned long long old_idx_sz;
++ unsigned long long calc_idx_sz;
++ struct ubifs_lp_stats lst;
++
++ int page_budget;
++ int inode_budget;
++ int dent_budget;
++
++ int ref_node_alsz;
++ int mst_node_alsz;
++ int min_idx_node_sz;
++ int max_idx_node_sz;
++ long long max_inode_sz;
++ int max_znode_sz;
++ int dead_wm;
++ int dark_wm;
++ int block_cnt;
++
++ struct ubifs_node_range ranges[UBIFS_NODE_TYPES_CNT];
++ struct ubi_volume_desc *ubi;
++ struct ubi_device_info di;
++ struct ubi_volume_info vi;
++
++ struct rb_root orph_tree;
++ struct list_head orph_list;
++ struct list_head orph_new;
++ struct ubifs_orphan *orph_cnext;
++ struct ubifs_orphan *orph_dnext;
++ spinlock_t orphan_lock;
++ void *orph_buf;
++ int new_orphans;
++ int cmt_orphans;
++ int tot_orphans;
++ int max_orphans;
++ int ohead_lnum;
++ int ohead_offs;
++ int no_orphs;
++
++ struct task_struct *bgt;
++ char bgt_name[sizeof(BGT_NAME_PATTERN) + 9];
++ int need_bgt;
++ int need_wbuf_sync;
++
++ int gc_lnum;
++ void *sbuf;
++ struct list_head idx_gc;
++ int idx_gc_cnt;
++
++ struct list_head infos_list;
++ struct mutex umount_mutex;
++ unsigned int shrinker_run_no;
++
++ int space_bits;
++ int lpt_lnum_bits;
++ int lpt_offs_bits;
++ int lpt_spc_bits;
++ int pcnt_bits;
++ int lnum_bits;
++ int nnode_sz;
++ int pnode_sz;
++ int ltab_sz;
++ int lsave_sz;
++ int pnode_cnt;
++ int nnode_cnt;
++ int lpt_hght;
++ int pnodes_have;
++
++ struct mutex lp_mutex;
++ int lpt_lnum;
++ int lpt_offs;
++ int nhead_lnum;
++ int nhead_offs;
++ int lpt_drty_flgs;
++ int dirty_nn_cnt;
++ int dirty_pn_cnt;
++ long long lpt_sz;
++ void *lpt_nod_buf;
++ void *lpt_buf;
++ struct ubifs_nnode *nroot;
++ struct ubifs_cnode *lpt_cnext;
++ struct ubifs_lpt_heap lpt_heap[LPROPS_HEAP_CNT];
++ struct ubifs_lpt_heap dirty_idx;
++ struct list_head uncat_list;
++ struct list_head empty_list;
++ struct list_head freeable_list;
++ struct list_head frdi_idx_list;
++ int freeable_cnt;
++
++ int ltab_lnum;
++ int ltab_offs;
++ struct ubifs_lpt_lprops *ltab;
++ struct ubifs_lpt_lprops *ltab_cmt;
++ int lsave_cnt;
++ int lsave_lnum;
++ int lsave_offs;
++ int *lsave;
++ int lscan_lnum;
++
++ long long rp_size;
++ long long report_rp_size;
++ uid_t rp_uid;
++ gid_t rp_gid;
++
++ /* The below fields are used only during mounting and re-mounting */
++ int empty;
++ struct rb_root replay_tree;
++ struct list_head replay_list;
++ struct list_head replay_buds;
++ unsigned long long cs_sqnum;
++ unsigned long long replay_sqnum;
++ int need_recovery;
++ int replaying;
++ struct list_head unclean_leb_list;
++ struct ubifs_mst_node *rcvrd_mst_node;
++ struct rb_root size_tree;
++ int remounting_rw;
++ struct ubifs_mount_opts mount_opts;
++
++#ifdef CONFIG_UBIFS_FS_DEBUG
++ void *dbg_buf;
++ struct ubifs_zbranch old_zroot;
++ int old_zroot_level;
++ unsigned long long old_zroot_sqnum;
++ int failure_mode;
++ int fail_delay;
++ unsigned long fail_timeout;
++ unsigned int fail_cnt;
++ unsigned int fail_cnt_max;
++#endif
++};
+
-+ if (atmel_use_dma_rx(port))
-+ atmel_rx_from_dma(port);
-+ else
-+ atmel_rx_from_ring(port);
++extern struct list_head ubifs_infos;
++extern spinlock_t ubifs_infos_lock;
++extern atomic_long_t ubifs_clean_zn_cnt;
++extern struct kmem_cache *ubifs_inode_slab;
++extern struct super_operations ubifs_super_operations;
++extern struct address_space_operations ubifs_file_address_operations;
++extern struct file_operations ubifs_file_operations;
++extern struct inode_operations ubifs_file_inode_operations;
++extern struct file_operations ubifs_dir_operations;
++extern struct inode_operations ubifs_dir_inode_operations;
++extern struct inode_operations ubifs_symlink_inode_operations;
++extern struct backing_dev_info ubifs_backing_dev_info;
++extern struct ubifs_compressor *ubifs_compressors[UBIFS_COMPR_TYPES_CNT];
++
++/* io.c */
++int ubifs_wbuf_write_nolock(struct ubifs_wbuf *wbuf, void *buf, int len);
++int ubifs_wbuf_seek_nolock(struct ubifs_wbuf *wbuf, int lnum, int offs,
++ int dtype);
++int ubifs_wbuf_init(struct ubifs_info *c, struct ubifs_wbuf *wbuf);
++int ubifs_read_node(const struct ubifs_info *c, void *buf, int type, int len,
++ int lnum, int offs);
++int ubifs_read_node_wbuf(struct ubifs_wbuf *wbuf, void *buf, int type, int len,
++ int lnum, int offs);
++int ubifs_write_node(struct ubifs_info *c, void *node, int len, int lnum,
++ int offs, int dtype);
++int ubifs_check_node(const struct ubifs_info *c, const void *buf, int lnum,
++ int offs, int quiet);
++void ubifs_prepare_node(struct ubifs_info *c, void *buf, int len, int pad);
++void ubifs_prep_grp_node(struct ubifs_info *c, void *node, int len, int last);
++int ubifs_io_init(struct ubifs_info *c);
++void ubifs_pad(const struct ubifs_info *c, void *buf, int pad);
++int ubifs_wbuf_sync_nolock(struct ubifs_wbuf *wbuf);
++int ubifs_bg_wbufs_sync(struct ubifs_info *c);
++void ubifs_wbuf_add_ino_nolock(struct ubifs_wbuf *wbuf, ino_t inum);
++int ubifs_sync_wbufs_by_inodes(struct ubifs_info *c,
++ struct inode * const *inodes, int count);
++
++/* scan.c */
++struct ubifs_scan_leb *ubifs_scan(const struct ubifs_info *c, int lnum,
++ int offs, void *sbuf);
++void ubifs_scan_destroy(struct ubifs_scan_leb *sleb);
++int ubifs_scan_a_node(const struct ubifs_info *c, void *buf, int len, int lnum,
++ int offs, int quiet);
++struct ubifs_scan_leb *ubifs_start_scan(const struct ubifs_info *c, int lnum,
++ int offs, void *sbuf);
++void ubifs_end_scan(const struct ubifs_info *c, struct ubifs_scan_leb *sleb,
++ int lnum, int offs);
++int ubifs_add_snod(const struct ubifs_info *c, struct ubifs_scan_leb *sleb,
++ void *buf, int offs);
++void ubifs_scanned_corruption(const struct ubifs_info *c, int lnum, int offs,
++ void *buf);
++
++/* log.c */
++void ubifs_add_bud(struct ubifs_info *c, struct ubifs_bud *bud);
++void ubifs_create_buds_lists(struct ubifs_info *c);
++int ubifs_add_bud_to_log(struct ubifs_info *c, int jhead, int lnum, int offs);
++struct ubifs_bud *ubifs_search_bud(struct ubifs_info *c, int lnum);
++struct ubifs_wbuf *ubifs_get_wbuf(struct ubifs_info *c, int lnum);
++int ubifs_log_start_commit(struct ubifs_info *c, int *ltail_lnum);
++int ubifs_log_end_commit(struct ubifs_info *c, int new_ltail_lnum);
++int ubifs_log_post_commit(struct ubifs_info *c, int old_ltail_lnum);
++int ubifs_consolidate_log(struct ubifs_info *c);
++
++/* journal.c */
++int ubifs_jnl_update(struct ubifs_info *c, const struct inode *dir,
++ const struct qstr *nm, const struct inode *inode,
++ int deletion, int sync, int xent);
++int ubifs_jnl_write_data(struct ubifs_info *c, const struct inode *inode,
++ const union ubifs_key *key, const void *buf, int len);
++int ubifs_jnl_write_inode(struct ubifs_info *c, const struct inode *inode,
++ int last_reference, int sync);
++int ubifs_jnl_rename(struct ubifs_info *c, const struct inode *old_dir,
++ const struct dentry *old_dentry,
++ const struct inode *new_dir,
++ const struct dentry *new_dentry, int sync);
++int ubifs_jnl_truncate(struct ubifs_info *c, ino_t inum,
++ loff_t old_size, loff_t new_size);
++int ubifs_jnl_delete_xattr(struct ubifs_info *c, const struct inode *host,
++ const struct inode *inode, const struct qstr *nm,
++ int sync);
++int ubifs_jnl_write_2_inodes(struct ubifs_info *c, const struct inode *inode1,
++ const struct inode *inode2, int sync);
++
++/* budget.c */
++int ubifs_budget_space(struct ubifs_info *c, struct ubifs_budget_req *req);
++void ubifs_release_budget(struct ubifs_info *c, struct ubifs_budget_req *req);
++int ubifs_budget_inode_op(struct ubifs_info *c, struct inode *inode,
++ struct ubifs_budget_req *req);
++void ubifs_release_ino_dirty(struct ubifs_info *c, struct inode *inode,
++ struct ubifs_budget_req *req);
++void ubifs_cancel_ino_op(struct ubifs_info *c, struct inode *inode,
++ struct ubifs_budget_req *req);
++int ubifs_budget_ino_cleaning(struct ubifs_info *c, struct inode *inode,
++ struct ubifs_budget_req *req);
++void ubifs_release_ino_clean(struct ubifs_info *c, struct inode *inode,
++ struct ubifs_budget_req *req);
++long long ubifs_budg_get_free_space(struct ubifs_info *c);
++int ubifs_calc_min_idx_lebs(struct ubifs_info *c);
++void ubifs_convert_page_budget(struct ubifs_info *c);
++void ubifs_release_new_page_budget(struct ubifs_info *c);
++long long ubifs_calc_available(const struct ubifs_info *c);
++
++/* find.c */
++int ubifs_find_free_space(struct ubifs_info *c, int min_space, int *free,
++ int squeeze);
++int ubifs_find_free_leb_for_idx(struct ubifs_info *c);
++int ubifs_find_dirty_leb(struct ubifs_info *c, struct ubifs_lprops *ret_lp,
++ int min_space, int pick_free);
++int ubifs_find_dirty_idx_leb(struct ubifs_info *c);
++int ubifs_save_dirty_idx_lnums(struct ubifs_info *c);
++
++/* tnc.c */
++int ubifs_lookup_level0(struct ubifs_info *c, const union ubifs_key *key,
++ struct ubifs_znode **zn, int *n);
++int ubifs_tnc_lookup(struct ubifs_info *c, const union ubifs_key *key,
++ void *node);
++int ubifs_tnc_lookup_nm(struct ubifs_info *c, const union ubifs_key *key,
++ void *node, const struct qstr *nm);
++int ubifs_tnc_locate(struct ubifs_info *c, const union ubifs_key *key,
++ void *node, int *lnum, int *offs);
++int ubifs_tnc_add(struct ubifs_info *c, const union ubifs_key *key, int lnum,
++ int offs, int len);
++int ubifs_tnc_replace(struct ubifs_info *c, const union ubifs_key *key,
++ int old_lnum, int old_offs, int lnum, int offs, int len);
++int ubifs_tnc_add_nm(struct ubifs_info *c, const union ubifs_key *key,
++ int lnum, int offs, int len, const struct qstr *nm);
++int ubifs_tnc_remove(struct ubifs_info *c, const union ubifs_key *key);
++int ubifs_tnc_remove_nm(struct ubifs_info *c, const union ubifs_key *key,
++ const struct qstr *nm);
++int ubifs_tnc_remove_range(struct ubifs_info *c, union ubifs_key *from_key,
++ union ubifs_key *to_key);
++int ubifs_tnc_remove_ino(struct ubifs_info *c, ino_t inum);
++struct ubifs_dent_node *ubifs_tnc_next_ent(struct ubifs_info *c,
++ union ubifs_key *key,
++ const struct qstr *nm);
++void ubifs_tnc_close(struct ubifs_info *c);
++int ubifs_tnc_has_node(struct ubifs_info *c, union ubifs_key *key, int level,
++ int lnum, int offs, int is_idx);
++int ubifs_dirty_idx_node(struct ubifs_info *c, union ubifs_key *key, int level,
++ int lnum, int offs);
++/* Shared by tnc.c for tnc_commit.c */
++void destroy_old_idx(struct ubifs_info *c);
++int is_idx_node_in_tnc(struct ubifs_info *c, union ubifs_key *key, int level,
++ int lnum, int offs);
++int insert_old_idx_znode(struct ubifs_info *c, struct ubifs_znode *znode);
++
++/* tnc_misc.c */
++struct ubifs_znode *ubifs_tnc_levelorder_next(struct ubifs_znode *zr,
++ struct ubifs_znode *znode);
++int ubifs_search_zbranch(const struct ubifs_info *c,
++ const struct ubifs_znode *znode,
++ const union ubifs_key *key, int *n);
++struct ubifs_znode *ubifs_tnc_postorder_first(struct ubifs_znode *znode);
++struct ubifs_znode *ubifs_tnc_postorder_next(struct ubifs_znode *znode);
++long ubifs_destroy_tnc_subtree(struct ubifs_znode *zr);
++struct ubifs_znode *ubifs_load_znode(struct ubifs_info *c,
++ struct ubifs_zbranch *zbr,
++ struct ubifs_znode *parent, int iip);
++int ubifs_tnc_read_node(struct ubifs_info *c, struct ubifs_zbranch *zbr,
++ void *node);
++
++/* tnc_commit.c */
++int ubifs_tnc_start_commit(struct ubifs_info *c, struct ubifs_zbranch *zroot);
++int ubifs_tnc_end_commit(struct ubifs_info *c);
++
++/* shrinker.c */
++int ubifs_shrinker(int nr_to_scan, gfp_t gfp_mask);
++
++/* commit.c */
++int ubifs_bg_thread(void *info);
++void ubifs_commit_required(struct ubifs_info *c);
++void ubifs_request_bg_commit(struct ubifs_info *c);
++int ubifs_run_commit(struct ubifs_info *c);
++void ubifs_recovery_commit(struct ubifs_info *c);
++int ubifs_gc_should_commit(struct ubifs_info *c);
++void ubifs_wait_for_commit(struct ubifs_info *c);
++
++/* master.c */
++int ubifs_read_master(struct ubifs_info *c);
++int ubifs_write_master(struct ubifs_info *c);
++
++/* sb.c */
++int ubifs_read_superblock(struct ubifs_info *c);
++struct ubifs_sb_node *ubifs_read_sb_node(struct ubifs_info *c);
++int ubifs_write_sb_node(struct ubifs_info *c, struct ubifs_sb_node *sup);
++
++/* replay.c */
++int ubifs_validate_entry(struct ubifs_info *c,
++ const struct ubifs_dent_node *dent);
++int ubifs_replay_journal(struct ubifs_info *c);
++
++/* gc.c */
++int ubifs_garbage_collect(struct ubifs_info *c, int anyway);
++int ubifs_gc_start_commit(struct ubifs_info *c);
++int ubifs_gc_end_commit(struct ubifs_info *c);
++void ubifs_destroy_idx_gc(struct ubifs_info *c);
++int ubifs_get_idx_gc_leb(struct ubifs_info *c);
++int ubifs_garbage_collect_leb(struct ubifs_info *c, struct ubifs_lprops *lp);
++
++/* orphan.c */
++int ubifs_add_orphan(struct ubifs_info *c, ino_t inum);
++void ubifs_delete_orphan(struct ubifs_info *c, ino_t inum);
++int ubifs_orphan_start_commit(struct ubifs_info *c);
++int ubifs_orphan_end_commit(struct ubifs_info *c);
++int ubifs_mount_orphans(struct ubifs_info *c, int unclean, int read_only);
++
++/* lpt.c */
++int ubifs_calc_lpt_geom(struct ubifs_info *c);
++int ubifs_create_dflt_lpt(struct ubifs_info *c, int *main_lebs, int lpt_first,
++ int *lpt_lebs, int *big_lpt);
++int ubifs_lpt_init(struct ubifs_info *c, int rd, int wr);
++struct ubifs_lprops *ubifs_lpt_lookup(struct ubifs_info *c, int lnum);
++struct ubifs_lprops *ubifs_lpt_lookup_dirty(struct ubifs_info *c, int lnum);
++int ubifs_lpt_scan_nolock(struct ubifs_info *c, int start_lnum, int end_lnum,
++ ubifs_lpt_scan_callback scan_cb, void *data);
++
++/* Shared by lpt.c for lpt_commit.c */
++void ubifs_pack_lsave(struct ubifs_info *c, void *buf, int *lsave);
++void ubifs_pack_ltab(struct ubifs_info *c, void *buf,
++ struct ubifs_lpt_lprops *ltab);
++void ubifs_pack_pnode(struct ubifs_info *c, void *buf,
++ struct ubifs_pnode *pnode);
++void ubifs_pack_nnode(struct ubifs_info *c, void *buf,
++ struct ubifs_nnode *nnode);
++struct ubifs_pnode *ubifs_get_pnode(struct ubifs_info *c,
++ struct ubifs_nnode *parent, int iip);
++struct ubifs_nnode *ubifs_get_nnode(struct ubifs_info *c,
++ struct ubifs_nnode *parent, int iip);
++int ubifs_read_nnode(struct ubifs_info *c, struct ubifs_nnode *parent, int iip);
++void ubifs_add_lpt_dirt(struct ubifs_info *c, int lnum, int dirty);
++void ubifs_add_nnode_dirt(struct ubifs_info *c, struct ubifs_nnode *nnode);
++uint32_t ubifs_unpack_bits(uint8_t **addr, int *pos, int nrbits);
++struct ubifs_nnode *ubifs_first_nnode(struct ubifs_info *c, int *hght);
++
++/* lpt_commit.c */
++int ubifs_lpt_start_commit(struct ubifs_info *c);
++int ubifs_lpt_end_commit(struct ubifs_info *c);
++int ubifs_lpt_post_commit(struct ubifs_info *c);
++void ubifs_lpt_free(struct ubifs_info *c, int wr_only);
++
++/* lprops.c */
++void ubifs_get_lprops(struct ubifs_info *c);
++const struct ubifs_lprops *ubifs_change_lp(struct ubifs_info *c,
++ const struct ubifs_lprops *lp,
++ int free, int dirty, int flags,
++ int idx_gc_cnt);
++void ubifs_release_lprops(struct ubifs_info *c);
++void ubifs_get_lp_stats(struct ubifs_info *c, struct ubifs_lp_stats *stats);
++void ubifs_add_to_cat(struct ubifs_info *c, struct ubifs_lprops *lprops,
++ int cat);
++void ubifs_replace_cat(struct ubifs_info *c, struct ubifs_lprops *old_lprops,
++ struct ubifs_lprops *new_lprops);
++void ubifs_ensure_cat(struct ubifs_info *c, struct ubifs_lprops *lprops);
++int ubifs_categorize_lprops(const struct ubifs_info *c,
++ const struct ubifs_lprops *lprops);
++int ubifs_change_one_lp(struct ubifs_info *c, int lnum, int free, int dirty,
++ int flags_set, int flags_clean, int idx_gc_cnt);
++int ubifs_update_one_lp(struct ubifs_info *c, int lnum, int free, int dirty,
++ int flags_set, int flags_clean);
++int ubifs_read_one_lp(struct ubifs_info *c, int lnum, struct ubifs_lprops *lp);
++const struct ubifs_lprops *ubifs_fast_find_free(struct ubifs_info *c);
++const struct ubifs_lprops *ubifs_fast_find_empty(struct ubifs_info *c);
++const struct ubifs_lprops *ubifs_fast_find_freeable(struct ubifs_info *c);
++const struct ubifs_lprops *ubifs_fast_find_frdi_idx(struct ubifs_info *c);
++
++/* file.c */
++int ubifs_fsync(struct file *file, struct dentry *dentry, int datasync);
++int ubifs_setattr(struct dentry *dentry, struct iattr *attr);
++
++/* dir.c */
++struct inode *ubifs_new_inode(struct ubifs_info *c, const struct inode *dir,
++ int mode);
++int ubifs_getattr(struct vfsmount *mnt, struct dentry *dentry,
++ struct kstat *stat);
++
++/* xattr.c */
++int ubifs_setxattr(struct dentry *dentry, const char *name,
++ const void *value, size_t size, int flags);
++ssize_t ubifs_getxattr(struct dentry *dentry, const char *name, void *buf,
++ size_t size);
++ssize_t ubifs_listxattr(struct dentry *dentry, char *buffer, size_t size);
++int ubifs_removexattr(struct dentry *dentry, const char *name);
++
++/* super.c */
++struct inode *ubifs_iget(struct super_block *sb, unsigned long inum);
++
++/* recovery.c */
++int ubifs_recover_master_node(struct ubifs_info *c);
++int ubifs_write_rcvrd_mst_node(struct ubifs_info *c);
++struct ubifs_scan_leb *ubifs_recover_leb(struct ubifs_info *c, int lnum,
++ int offs, void *sbuf, int grouped);
++struct ubifs_scan_leb *ubifs_recover_log_leb(struct ubifs_info *c, int lnum,
++ int offs, void *sbuf);
++int ubifs_recover_inl_heads(const struct ubifs_info *c, void *sbuf);
++int ubifs_clean_lebs(const struct ubifs_info *c, void *sbuf);
++int ubifs_rcvry_gc_commit(struct ubifs_info *c);
++int ubifs_recover_size_accum(struct ubifs_info *c, union ubifs_key *key,
++ int deletion, loff_t new_size);
++int ubifs_recover_size(struct ubifs_info *c);
++void ubifs_destroy_size_tree(struct ubifs_info *c);
++
++/* ioctl.c */
++long ubifs_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
++void ubifs_set_inode_flags(struct inode *inode);
++#ifdef CONFIG_COMPAT
++long ubifs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
++#endif
+
-+ spin_unlock(&port->lock);
- }
-
- /*
-@@ -403,6 +792,8 @@
- */
- static int atmel_startup(struct uart_port *port)
- {
-+ struct atmel_uart_port *atmel_port = to_atmel_uart_port(port);
-+ struct tty_struct *tty = port->info->tty;
- int retval;
-
- /*
-@@ -415,13 +806,64 @@
- /*
- * Allocate the IRQ
- */
-- retval = request_irq(port->irq, atmel_interrupt, IRQF_SHARED, "atmel_serial", port);
-+ retval = request_irq(port->irq, atmel_interrupt, IRQF_SHARED,
-+ tty ? tty->name : "atmel_serial", port);
- if (retval) {
- printk("atmel_serial: atmel_startup - Can't get irq\n");
- return retval;
- }
-
- /*
-+ * Initialize DMA (if necessary)
-+ */
-+ if (atmel_use_dma_rx(port)) {
-+ int i;
++/* compressor.c */
++int __init ubifs_compressors_init(void);
++void __exit ubifs_compressors_exit(void);
++void ubifs_compress(const void *in_buf, int in_len, void *out_buf, int *out_len,
++ int *compr_type);
++int ubifs_decompress(const void *buf, int len, void *out, int *out_len,
++ int compr_type);
++
++#include "debug.h"
++#include "misc.h"
++#include "key.h"
++
++#endif /* !__UBIFS_H__ */
+diff --exclude=.git -urN linux-2.6.25.6/fs/ubifs/ubifs-media.h avr32-2.6/fs/ubifs/ubifs-media.h
+--- linux-2.6.25.6/fs/ubifs/ubifs-media.h 1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/fs/ubifs/ubifs-media.h 2008-06-12 15:09:45.603817614 +0200
+@@ -0,0 +1,729 @@
++/*
++ * This file is part of UBIFS.
++ *
++ * Copyright (C) 2006-2008 Nokia Corporation.
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published by
++ * the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but WITHOUT
++ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
++ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
++ * more details.
++ *
++ * You should have received a copy of the GNU General Public License along with
++ * this program; if not, write to the Free Software Foundation, Inc., 51
++ * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
++ *
++ * Authors: Artem Bityutskiy (Битюцкий Артём)
++ * Adrian Hunter
++ */
+
-+ for (i = 0; i < 2; i++) {
-+ struct atmel_dma_buffer *pdc = &atmel_port->pdc_rx[i];
-+
-+ pdc->buf = kmalloc(PDC_BUFFER_SIZE, GFP_KERNEL);
-+ if (pdc->buf == NULL) {
-+ if (i != 0) {
-+ dma_unmap_single(port->dev,
-+ atmel_port->pdc_rx[0].dma_addr,
-+ PDC_BUFFER_SIZE,
-+ DMA_FROM_DEVICE);
-+ kfree(atmel_port->pdc_rx[0].buf);
-+ }
-+ free_irq(port->irq, port);
-+ return -ENOMEM;
-+ }
-+ pdc->dma_addr = dma_map_single(port->dev,
-+ pdc->buf,
-+ PDC_BUFFER_SIZE,
-+ DMA_FROM_DEVICE);
-+ pdc->dma_size = PDC_BUFFER_SIZE;
-+ pdc->ofs = 0;
-+ }
++/*
++ * This file describes UBIFS on-flash format and contains definitions of all the
++ * relevant data structures and constants.
++ *
++ * All UBIFS on-flash objects are stored in the form of nodes. All nodes start
++ * with the UBIFS node magic number and have the same common header. Nodes
++ * always sit at 8-byte aligned positions on the media and node header sizes are
++ * also 8-byte aligned (except for the indexing node and the padding node).
++ */
+
-+ atmel_port->pdc_rx_idx = 0;
++#ifndef __UBIFS_MEDIA_H__
++#define __UBIFS_MEDIA_H__
+
-+ UART_PUT_RPR(port, atmel_port->pdc_rx[0].dma_addr);
-+ UART_PUT_RCR(port, PDC_BUFFER_SIZE);
++/* UBIFS node magic number (must not have the padding byte first or last) */
++#define UBIFS_NODE_MAGIC 0x06101831
+
-+ UART_PUT_RNPR(port, atmel_port->pdc_rx[1].dma_addr);
-+ UART_PUT_RNCR(port, PDC_BUFFER_SIZE);
-+ }
-+ if (atmel_use_dma_tx(port)) {
-+ struct atmel_dma_buffer *pdc = &atmel_port->pdc_tx;
-+ struct circ_buf *xmit = &port->info->xmit;
++/* UBIFS on-flash format version */
++#define UBIFS_FORMAT_VERSION 4
+
-+ pdc->buf = xmit->buf;
-+ pdc->dma_addr = dma_map_single(port->dev,
-+ pdc->buf,
-+ UART_XMIT_SIZE,
-+ DMA_TO_DEVICE);
-+ pdc->dma_size = UART_XMIT_SIZE;
-+ pdc->ofs = 0;
-+ }
++/* Minimum logical eraseblock size in bytes */
++#define UBIFS_MIN_LEB_SZ (15*1024)
+
-+ /*
- * If there is a specific "open" function (to register
- * control line interrupts)
- */
-@@ -437,9 +879,21 @@
- * Finally, enable the serial port
- */
- UART_PUT_CR(port, ATMEL_US_RSTSTA | ATMEL_US_RSTRX);
-- UART_PUT_CR(port, ATMEL_US_TXEN | ATMEL_US_RXEN); /* enable xmit & rcvr */
-+ /* enable xmit & rcvr */
-+ UART_PUT_CR(port, ATMEL_US_TXEN | ATMEL_US_RXEN);
-
-- UART_PUT_IER(port, ATMEL_US_RXRDY); /* enable receive only */
-+ if (atmel_use_dma_rx(port)) {
-+ /* set UART timeout */
-+ UART_PUT_RTOR(port, PDC_RX_TIMEOUT);
-+ UART_PUT_CR(port, ATMEL_US_STTTO);
-+
-+ UART_PUT_IER(port, ATMEL_US_ENDRX | ATMEL_US_TIMEOUT);
-+ /* enable PDC controller */
-+ UART_PUT_PTCR(port, ATMEL_PDC_RXTEN);
-+ } else {
-+ /* enable receive only */
-+ UART_PUT_IER(port, ATMEL_US_RXRDY);
-+ }
-
- return 0;
- }
-@@ -449,6 +903,38 @@
- */
- static void atmel_shutdown(struct uart_port *port)
- {
-+ struct atmel_uart_port *atmel_port = to_atmel_uart_port(port);
-+ /*
-+ * Ensure everything is stopped.
-+ */
-+ atmel_stop_rx(port);
-+ atmel_stop_tx(port);
++/* Initial CRC32 value used when calculating CRC checksums */
++#define UBIFS_CRC32_INIT 0xFFFFFFFFU
+
-+ /*
-+ * Shut-down the DMA.
-+ */
-+ if (atmel_use_dma_rx(port)) {
-+ int i;
++/*
++ * UBIFS does not try to compress data if its length is less than the below
++ * constant.
++ */
++#define UBIFS_MIN_COMPR_LEN 128
+
-+ for (i = 0; i < 2; i++) {
-+ struct atmel_dma_buffer *pdc = &atmel_port->pdc_rx[i];
++/* Root inode number */
++#define UBIFS_ROOT_INO 1
+
-+ dma_unmap_single(port->dev,
-+ pdc->dma_addr,
-+ pdc->dma_size,
-+ DMA_FROM_DEVICE);
-+ kfree(pdc->buf);
-+ }
-+ }
-+ if (atmel_use_dma_tx(port)) {
-+ struct atmel_dma_buffer *pdc = &atmel_port->pdc_tx;
++/* Lowest inode number used for regular inodes (not UBIFS-only internal ones) */
++#define UBIFS_FIRST_INO 64
+
-+ dma_unmap_single(port->dev,
-+ pdc->dma_addr,
-+ pdc->dma_size,
-+ DMA_TO_DEVICE);
-+ }
++/*
++ * Maximum file name and extended attribute length (must be a multiple of 8,
++ * minus 1).
++ */
++#define UBIFS_MAX_NLEN 255
+
- /*
- * Disable all interrupts, port and break condition.
- */
-@@ -471,45 +957,48 @@
- /*
- * Power / Clock management.
- */
--static void atmel_serial_pm(struct uart_port *port, unsigned int state, unsigned int oldstate)
-+static void atmel_serial_pm(struct uart_port *port, unsigned int state,
-+ unsigned int oldstate)
- {
-- struct atmel_uart_port *atmel_port = (struct atmel_uart_port *) port;
-+ struct atmel_uart_port *atmel_port = to_atmel_uart_port(port);
-
- switch (state) {
-- case 0:
-- /*
-- * Enable the peripheral clock for this serial port.
-- * This is called on uart_open() or a resume event.
-- */
-- clk_enable(atmel_port->clk);
-- break;
-- case 3:
-- /*
-- * Disable the peripheral clock for this serial port.
-- * This is called on uart_close() or a suspend event.
-- */
-- clk_disable(atmel_port->clk);
-- break;
-- default:
-- printk(KERN_ERR "atmel_serial: unknown pm %d\n", state);
-+ case 0:
-+ /*
-+ * Enable the peripheral clock for this serial port.
-+ * This is called on uart_open() or a resume event.
-+ */
-+ clk_enable(atmel_port->clk);
-+ break;
-+ case 3:
-+ /*
-+ * Disable the peripheral clock for this serial port.
-+ * This is called on uart_close() or a suspend event.
-+ */
-+ clk_disable(atmel_port->clk);
-+ break;
-+ default:
-+ printk(KERN_ERR "atmel_serial: unknown pm %d\n", state);
- }
- }
-
- /*
- * Change the port parameters
- */
--static void atmel_set_termios(struct uart_port *port, struct ktermios * termios, struct ktermios * old)
-+static void atmel_set_termios(struct uart_port *port, struct ktermios *termios,
-+ struct ktermios *old)
- {
- unsigned long flags;
- unsigned int mode, imr, quot, baud;
-
- /* Get current mode register */
-- mode = UART_GET_MR(port) & ~(ATMEL_US_USCLKS | ATMEL_US_CHRL | ATMEL_US_NBSTOP | ATMEL_US_PAR);
-+ mode = UART_GET_MR(port) & ~(ATMEL_US_USCLKS | ATMEL_US_CHRL
-+ | ATMEL_US_NBSTOP | ATMEL_US_PAR);
-
-- baud = uart_get_baud_rate(port, termios, old, 0, port->uartclk/16);
-+ baud = uart_get_baud_rate(port, termios, old, 0, port->uartclk / 16);
- quot = uart_get_divisor(port, baud);
-
-- if (quot > 65535) { /* BRGR is 16-bit, so switch to slower clock */
-+ if (quot > 65535) { /* BRGR is 16-bit, so switch to slower clock */
- quot /= 8;
- mode |= ATMEL_US_USCLKS_MCK_DIV8;
- }
-@@ -536,18 +1025,17 @@
-
- /* parity */
- if (termios->c_cflag & PARENB) {
-- if (termios->c_cflag & CMSPAR) { /* Mark or Space parity */
-+ /* Mark or Space parity */
-+ if (termios->c_cflag & CMSPAR) {
- if (termios->c_cflag & PARODD)
- mode |= ATMEL_US_PAR_MARK;
- else
- mode |= ATMEL_US_PAR_SPACE;
-- }
-- else if (termios->c_cflag & PARODD)
-+ } else if (termios->c_cflag & PARODD)
- mode |= ATMEL_US_PAR_ODD;
- else
- mode |= ATMEL_US_PAR_EVEN;
-- }
-- else
-+ } else
- mode |= ATMEL_US_PAR_NONE;
-
- spin_lock_irqsave(&port->lock, flags);
-@@ -558,6 +1046,10 @@
- if (termios->c_iflag & (BRKINT | PARMRK))
- port->read_status_mask |= ATMEL_US_RXBRK;
-
-+ if (atmel_use_dma_rx(port))
-+ /* need to enable error interrupts */
-+ UART_PUT_IER(port, port->read_status_mask);
++/* Maximum number of data journal heads */
++#define UBIFS_MAX_JHEADS 1
+
- /*
- * Characters to ignore
- */
-@@ -573,16 +1065,16 @@
- if (termios->c_iflag & IGNPAR)
- port->ignore_status_mask |= ATMEL_US_OVRE;
- }
--
-- // TODO: Ignore all characters if CREAD is set.
-+ /* TODO: Ignore all characters if CREAD is set.*/
-
- /* update the per-port timeout */
- uart_update_timeout(port, termios->c_cflag, baud);
-
-- /* disable interrupts and drain transmitter */
-- imr = UART_GET_IMR(port); /* get interrupt mask */
-- UART_PUT_IDR(port, -1); /* disable all interrupts */
-- while (!(UART_GET_CSR(port) & ATMEL_US_TXEMPTY)) { barrier(); }
-+ /* save/disable interrupts and drain transmitter */
-+ imr = UART_GET_IMR(port);
-+ UART_PUT_IDR(port, -1);
-+ while (!(UART_GET_CSR(port) & ATMEL_US_TXEMPTY))
-+ cpu_relax();
-
- /* disable receiver and transmitter */
- UART_PUT_CR(port, ATMEL_US_TXDIS | ATMEL_US_RXDIS);
-@@ -708,7 +1200,8 @@
- /*
- * Configure the port from the platform device resource info.
- */
--static void __devinit atmel_init_port(struct atmel_uart_port *atmel_port, struct platform_device *pdev)
-+static void __devinit atmel_init_port(struct atmel_uart_port *atmel_port,
-+ struct platform_device *pdev)
- {
- struct uart_port *port = &atmel_port->uart;
- struct atmel_uart_data *data = pdev->dev.platform_data;
-@@ -723,6 +1216,11 @@
- port->mapbase = pdev->resource[0].start;
- port->irq = pdev->resource[1].start;
-
-+ tasklet_init(&atmel_port->tasklet, atmel_tasklet_func,
-+ (unsigned long)port);
-+
-+ memset(&atmel_port->rx_ring, 0, sizeof(atmel_port->rx_ring));
-+
- if (data->regs)
- /* Already mapped by setup code */
- port->membase = data->regs;
-@@ -731,11 +1229,17 @@
- port->membase = NULL;
- }
-
-- if (!atmel_port->clk) { /* for console, the clock could already be configured */
-+ /* for console, the clock could already be configured */
-+ if (!atmel_port->clk) {
- atmel_port->clk = clk_get(&pdev->dev, "usart");
- clk_enable(atmel_port->clk);
- port->uartclk = clk_get_rate(atmel_port->clk);
- }
++/*
++ * Size of UBIFS data block. Note, UBIFS is not a block oriented file-system,
++ * which means that it does not treat the underlying media as consisting of
++ * blocks like in case of hard drives. Do not be confused. UBIFS block is just
++ * the maximum amount of data which one data node can have or which can be
++ * attached to an inode node.
++ */
++#define UBIFS_BLOCK_SIZE 4096
++#define UBIFS_BLOCK_SHIFT 12
++#define UBIFS_BLOCK_MASK 0x00000FFF
+
-+ atmel_port->use_dma_rx = data->use_dma_rx;
-+ atmel_port->use_dma_tx = data->use_dma_tx;
-+ if (atmel_use_dma_tx(port))
-+ port->fifosize = PDC_BUFFER_SIZE;
- }
-
- /*
-@@ -755,12 +1259,11 @@
- atmel_pops.set_wake = fns->set_wake;
- }
-
--
- #ifdef CONFIG_SERIAL_ATMEL_CONSOLE
- static void atmel_console_putchar(struct uart_port *port, int ch)
- {
- while (!(UART_GET_CSR(port) & ATMEL_US_TXRDY))
-- barrier();
-+ cpu_relax();
- UART_PUT_CHAR(port, ch);
- }
-
-@@ -773,38 +1276,40 @@
- unsigned int status, imr;
-
- /*
-- * First, save IMR and then disable interrupts
-+ * First, save IMR and then disable interrupts
- */
-- imr = UART_GET_IMR(port); /* get interrupt mask */
-+ imr = UART_GET_IMR(port);
- UART_PUT_IDR(port, ATMEL_US_RXRDY | ATMEL_US_TXRDY);
-
- uart_console_write(port, s, count, atmel_console_putchar);
-
- /*
-- * Finally, wait for transmitter to become empty
-- * and restore IMR
-+ * Finally, wait for transmitter to become empty
-+ * and restore IMR
- */
- do {
- status = UART_GET_CSR(port);
- } while (!(status & ATMEL_US_TXRDY));
-- UART_PUT_IER(port, imr); /* set interrupts back the way they were */
-+ /* set interrupts back the way they were */
-+ UART_PUT_IER(port, imr);
- }
-
- /*
-- * If the port was already initialised (eg, by a boot loader), try to determine
-- * the current setup.
-+ * If the port was already initialised (eg, by a boot loader),
-+ * try to determine the current setup.
- */
--static void __init atmel_console_get_options(struct uart_port *port, int *baud, int *parity, int *bits)
-+static void __init atmel_console_get_options(struct uart_port *port, int *baud,
-+ int *parity, int *bits)
- {
- unsigned int mr, quot;
-
--// TODO: CR is a write-only register
--// unsigned int cr;
--//
--// cr = UART_GET_CR(port) & (ATMEL_US_RXEN | ATMEL_US_TXEN);
--// if (cr == (ATMEL_US_RXEN | ATMEL_US_TXEN)) {
--// /* ok, the port was enabled */
--// }
-+ /*
-+ * If the baud rate generator isn't running, the port wasn't
-+ * initialized by the boot loader.
-+ */
-+ quot = UART_GET_BRGR(port);
-+ if (!quot)
-+ return;
-
- mr = UART_GET_MR(port) & ATMEL_US_CHRL;
- if (mr == ATMEL_US_CHRL_8)
-@@ -824,7 +1329,6 @@
- * lower than one of those, as it would make us fall through
- * to a much lower baud rate than we really want.
- */
-- quot = UART_GET_BRGR(port);
- *baud = port->uartclk / (16 * (quot - 1));
- }
-
-@@ -836,10 +1340,12 @@
- int parity = 'n';
- int flow = 'n';
-
-- if (port->membase == 0) /* Port not initialized yet - delay setup */
-+ if (port->membase == NULL) {
-+ /* Port not initialized yet - delay setup */
- return -ENODEV;
-+ }
-
-- UART_PUT_IDR(port, -1); /* disable interrupts */
-+ UART_PUT_IDR(port, -1);
- UART_PUT_CR(port, ATMEL_US_RSTSTA | ATMEL_US_RSTRX);
- UART_PUT_CR(port, ATMEL_US_TXEN | ATMEL_US_RXEN);
-
-@@ -871,13 +1377,16 @@
- static int __init atmel_console_init(void)
- {
- if (atmel_default_console_device) {
-- add_preferred_console(ATMEL_DEVICENAME, atmel_default_console_device->id, NULL);
-- atmel_init_port(&(atmel_ports[atmel_default_console_device->id]), atmel_default_console_device);
-+ add_preferred_console(ATMEL_DEVICENAME,
-+ atmel_default_console_device->id, NULL);
-+ atmel_init_port(&atmel_ports[atmel_default_console_device->id],
-+ atmel_default_console_device);
- register_console(&atmel_console);
- }
-
- return 0;
- }
++/* UBIFS padding byte pattern (must not be first or last byte of node magic) */
++#define UBIFS_PADDING_BYTE 0xCE
+
- console_initcall(atmel_console_init);
-
- /*
-@@ -885,34 +1394,48 @@
- */
- static int __init atmel_late_console_init(void)
- {
-- if (atmel_default_console_device && !(atmel_console.flags & CON_ENABLED))
-+ if (atmel_default_console_device
-+ && !(atmel_console.flags & CON_ENABLED))
- register_console(&atmel_console);
-
- return 0;
- }
++/* Maximum possible key length */
++#define UBIFS_MAX_KEY_LEN 16
+
- core_initcall(atmel_late_console_init);
-
-+static inline bool atmel_is_console_port(struct uart_port *port)
-+{
-+ return port->cons && port->cons->index == port->line;
-+}
++/* Key length ("simple" format) */
++#define UBIFS_SK_LEN 8
+
- #else
- #define ATMEL_CONSOLE_DEVICE NULL
++/* Minimum index tree fanout */
++#define UBIFS_MIN_FANOUT 2
+
-+static inline bool atmel_is_console_port(struct uart_port *port)
-+{
-+ return false;
-+}
- #endif
-
- static struct uart_driver atmel_uart = {
-- .owner = THIS_MODULE,
-- .driver_name = "atmel_serial",
-- .dev_name = ATMEL_DEVICENAME,
-- .major = SERIAL_ATMEL_MAJOR,
-- .minor = MINOR_START,
-- .nr = ATMEL_MAX_UART,
-- .cons = ATMEL_CONSOLE_DEVICE,
-+ .owner = THIS_MODULE,
-+ .driver_name = "atmel_serial",
-+ .dev_name = ATMEL_DEVICENAME,
-+ .major = SERIAL_ATMEL_MAJOR,
-+ .minor = MINOR_START,
-+ .nr = ATMEL_MAX_UART,
-+ .cons = ATMEL_CONSOLE_DEVICE,
- };
-
- #ifdef CONFIG_PM
--static int atmel_serial_suspend(struct platform_device *pdev, pm_message_t state)
-+static int atmel_serial_suspend(struct platform_device *pdev,
-+ pm_message_t state)
- {
- struct uart_port *port = platform_get_drvdata(pdev);
-- struct atmel_uart_port *atmel_port = (struct atmel_uart_port *) port;
-+ struct atmel_uart_port *atmel_port = to_atmel_uart_port(port);
-
-- if (device_may_wakeup(&pdev->dev) && !at91_suspend_entering_slow_clock())
-+ if (device_may_wakeup(&pdev->dev)
-+ && !at91_suspend_entering_slow_clock())
- enable_irq_wake(port->irq);
- else {
- uart_suspend_port(&atmel_uart, port);
-@@ -925,13 +1448,12 @@
- static int atmel_serial_resume(struct platform_device *pdev)
- {
- struct uart_port *port = platform_get_drvdata(pdev);
-- struct atmel_uart_port *atmel_port = (struct atmel_uart_port *) port;
-+ struct atmel_uart_port *atmel_port = to_atmel_uart_port(port);
-
- if (atmel_port->suspended) {
- uart_resume_port(&atmel_uart, port);
- atmel_port->suspended = 0;
-- }
-- else
-+ } else
- disable_irq_wake(port->irq);
-
- return 0;
-@@ -944,15 +1466,40 @@
- static int __devinit atmel_serial_probe(struct platform_device *pdev)
- {
- struct atmel_uart_port *port;
-+ void *data;
- int ret;
-
-+ BUILD_BUG_ON(!is_power_of_2(ATMEL_SERIAL_RINGSIZE));
++/* Maximum number of levels in UBIFS indexing B-tree */
++#define UBIFS_MAX_LEVELS 512
+
- port = &atmel_ports[pdev->id];
- atmel_init_port(port, pdev);
-
-+ if (!atmel_use_dma_rx(&port->uart)) {
-+ ret = -ENOMEM;
-+ data = kmalloc(sizeof(struct atmel_uart_char)
-+ * ATMEL_SERIAL_RINGSIZE, GFP_KERNEL);
-+ if (!data)
-+ goto err_alloc_ring;
-+ port->rx_ring.buf = data;
-+ }
++/* Maximum amount of data attached to an inode in bytes */
++#define UBIFS_MAX_INO_DATA UBIFS_BLOCK_SIZE
+
- ret = uart_add_one_port(&atmel_uart, &port->uart);
-- if (!ret) {
-- device_init_wakeup(&pdev->dev, 1);
-- platform_set_drvdata(pdev, port);
-+ if (ret)
-+ goto err_add_port;
++/* LEB Properties Tree fanout (must be power of 2) and fanout shift */
++#define UBIFS_LPT_FANOUT 4
++#define UBIFS_LPT_FANOUT_SHIFT 2
+
-+ device_init_wakeup(&pdev->dev, 1);
-+ platform_set_drvdata(pdev, port);
++/* LEB Properties Tree bit field sizes */
++#define UBIFS_LPT_CRC_BITS 16
++#define UBIFS_LPT_CRC_BYTES 2
++#define UBIFS_LPT_TYPE_BITS 4
+
-+ return 0;
++/* The key is always at the same position in all keyed nodes */
++#define UBIFS_KEY_OFFSET offsetof(struct ubifs_ino_node, key)
+
-+err_add_port:
-+ kfree(port->rx_ring.buf);
-+ port->rx_ring.buf = NULL;
-+err_alloc_ring:
-+ if (!atmel_is_console_port(&port->uart)) {
-+ clk_disable(port->clk);
-+ clk_put(port->clk);
-+ port->clk = NULL;
- }
-
- return ret;
-@@ -961,19 +1508,21 @@
- static int __devexit atmel_serial_remove(struct platform_device *pdev)
- {
- struct uart_port *port = platform_get_drvdata(pdev);
-- struct atmel_uart_port *atmel_port = (struct atmel_uart_port *) port;
-+ struct atmel_uart_port *atmel_port = to_atmel_uart_port(port);
- int ret = 0;
-
-- clk_disable(atmel_port->clk);
-- clk_put(atmel_port->clk);
--
- device_init_wakeup(&pdev->dev, 0);
- platform_set_drvdata(pdev, NULL);
-
-- if (port) {
-- ret = uart_remove_one_port(&atmel_uart, port);
-- kfree(port);
-- }
-+ ret = uart_remove_one_port(&atmel_uart, port);
++/*
++ * LEB Properties Tree node types.
++ *
++ * UBIFS_LPT_PNODE: LPT leaf node (contains LEB properties)
++ * UBIFS_LPT_NNODE: LPT internal node
++ * UBIFS_LPT_LTAB: LPT's own lprops table
++ * UBIFS_LPT_LSAVE: LPT's save table (big model only)
++ * UBIFS_LPT_NODE_CNT: count of LPT node types
++ * UBIFS_LPT_NOT_A_NODE: all ones (15 for 4 bits) is never a valid node type
++ */
++enum {
++ UBIFS_LPT_PNODE,
++ UBIFS_LPT_NNODE,
++ UBIFS_LPT_LTAB,
++ UBIFS_LPT_LSAVE,
++ UBIFS_LPT_NODE_CNT,
++ UBIFS_LPT_NOT_A_NODE = (1 << UBIFS_LPT_TYPE_BITS) - 1,
++};
+
-+ tasklet_kill(&atmel_port->tasklet);
-+ kfree(atmel_port->rx_ring.buf);
++/*
++ * UBIFS inode types.
++ *
++ * UBIFS_ITYPE_REG: regular file
++ * UBIFS_ITYPE_DIR: directory
++ * UBIFS_ITYPE_LNK: soft link
++ * UBIFS_ITYPE_BLK: block device node
++ * UBIFS_ITYPE_CHR: character device node
++ * UBIFS_ITYPE_FIFO: fifo
++ * UBIFS_ITYPE_SOCK: socket
++ * UBIFS_ITYPES_CNT: count of supported file types
++ */
++enum {
++ UBIFS_ITYPE_REG,
++ UBIFS_ITYPE_DIR,
++ UBIFS_ITYPE_LNK,
++ UBIFS_ITYPE_BLK,
++ UBIFS_ITYPE_CHR,
++ UBIFS_ITYPE_FIFO,
++ UBIFS_ITYPE_SOCK,
++ UBIFS_ITYPES_CNT,
++};
+
-+ /* "port" is allocated statically, so we shouldn't free it */
++/*
++ * Supported key hash functions.
++ *
++ * UBIFS_KEY_HASH_R5: R5 hash
++ * UBIFS_KEY_HASH_TEST: test hash which just returns first 4 bytes of the name
++ */
++enum {
++ UBIFS_KEY_HASH_R5,
++ UBIFS_KEY_HASH_TEST,
++};
+
-+ clk_disable(atmel_port->clk);
-+ clk_put(atmel_port->clk);
-
- return ret;
- }
---- a/drivers/serial/atmel_serial.h
-+++ /dev/null
-@@ -1,127 +0,0 @@
--/*
-- * drivers/serial/atmel_serial.h
-- *
-- * Copyright (C) 2005 Ivan Kokshaysky
-- * Copyright (C) SAN People
-- *
-- * USART registers.
-- * Based on AT91RM9200 datasheet revision E.
-- *
-- * This program is free software; you can redistribute it and/or modify
-- * it under the terms of the GNU General Public License as published by
-- * the Free Software Foundation; either version 2 of the License, or
-- * (at your option) any later version.
-- */
--
--#ifndef ATMEL_SERIAL_H
--#define ATMEL_SERIAL_H
--
--#define ATMEL_US_CR 0x00 /* Control Register */
--#define ATMEL_US_RSTRX (1 << 2) /* Reset Receiver */
--#define ATMEL_US_RSTTX (1 << 3) /* Reset Transmitter */
--#define ATMEL_US_RXEN (1 << 4) /* Receiver Enable */
--#define ATMEL_US_RXDIS (1 << 5) /* Receiver Disable */
--#define ATMEL_US_TXEN (1 << 6) /* Transmitter Enable */
--#define ATMEL_US_TXDIS (1 << 7) /* Transmitter Disable */
--#define ATMEL_US_RSTSTA (1 << 8) /* Reset Status Bits */
--#define ATMEL_US_STTBRK (1 << 9) /* Start Break */
--#define ATMEL_US_STPBRK (1 << 10) /* Stop Break */
--#define ATMEL_US_STTTO (1 << 11) /* Start Time-out */
--#define ATMEL_US_SENDA (1 << 12) /* Send Address */
--#define ATMEL_US_RSTIT (1 << 13) /* Reset Iterations */
--#define ATMEL_US_RSTNACK (1 << 14) /* Reset Non Acknowledge */
--#define ATMEL_US_RETTO (1 << 15) /* Rearm Time-out */
--#define ATMEL_US_DTREN (1 << 16) /* Data Terminal Ready Enable [AT91RM9200 only] */
--#define ATMEL_US_DTRDIS (1 << 17) /* Data Terminal Ready Disable [AT91RM9200 only] */
--#define ATMEL_US_RTSEN (1 << 18) /* Request To Send Enable */
--#define ATMEL_US_RTSDIS (1 << 19) /* Request To Send Disable */
--
--#define ATMEL_US_MR 0x04 /* Mode Register */
--#define ATMEL_US_USMODE (0xf << 0) /* Mode of the USART */
--#define ATMEL_US_USMODE_NORMAL 0
--#define ATMEL_US_USMODE_RS485 1
--#define ATMEL_US_USMODE_HWHS 2
--#define ATMEL_US_USMODE_MODEM 3
--#define ATMEL_US_USMODE_ISO7816_T0 4
--#define ATMEL_US_USMODE_ISO7816_T1 6
--#define ATMEL_US_USMODE_IRDA 8
--#define ATMEL_US_USCLKS (3 << 4) /* Clock Selection */
--#define ATMEL_US_USCLKS_MCK (0 << 4)
--#define ATMEL_US_USCLKS_MCK_DIV8 (1 << 4)
--#define ATMEL_US_USCLKS_SCK (3 << 4)
--#define ATMEL_US_CHRL (3 << 6) /* Character Length */
--#define ATMEL_US_CHRL_5 (0 << 6)
--#define ATMEL_US_CHRL_6 (1 << 6)
--#define ATMEL_US_CHRL_7 (2 << 6)
--#define ATMEL_US_CHRL_8 (3 << 6)
--#define ATMEL_US_SYNC (1 << 8) /* Synchronous Mode Select */
--#define ATMEL_US_PAR (7 << 9) /* Parity Type */
--#define ATMEL_US_PAR_EVEN (0 << 9)
--#define ATMEL_US_PAR_ODD (1 << 9)
--#define ATMEL_US_PAR_SPACE (2 << 9)
--#define ATMEL_US_PAR_MARK (3 << 9)
--#define ATMEL_US_PAR_NONE (4 << 9)
--#define ATMEL_US_PAR_MULTI_DROP (6 << 9)
--#define ATMEL_US_NBSTOP (3 << 12) /* Number of Stop Bits */
--#define ATMEL_US_NBSTOP_1 (0 << 12)
--#define ATMEL_US_NBSTOP_1_5 (1 << 12)
--#define ATMEL_US_NBSTOP_2 (2 << 12)
--#define ATMEL_US_CHMODE (3 << 14) /* Channel Mode */
--#define ATMEL_US_CHMODE_NORMAL (0 << 14)
--#define ATMEL_US_CHMODE_ECHO (1 << 14)
--#define ATMEL_US_CHMODE_LOC_LOOP (2 << 14)
--#define ATMEL_US_CHMODE_REM_LOOP (3 << 14)
--#define ATMEL_US_MSBF (1 << 16) /* Bit Order */
--#define ATMEL_US_MODE9 (1 << 17) /* 9-bit Character Length */
--#define ATMEL_US_CLKO (1 << 18) /* Clock Output Select */
--#define ATMEL_US_OVER (1 << 19) /* Oversampling Mode */
--#define ATMEL_US_INACK (1 << 20) /* Inhibit Non Acknowledge */
--#define ATMEL_US_DSNACK (1 << 21) /* Disable Successive NACK */
--#define ATMEL_US_MAX_ITER (7 << 24) /* Max Iterations */
--#define ATMEL_US_FILTER (1 << 28) /* Infrared Receive Line Filter */
--
--#define ATMEL_US_IER 0x08 /* Interrupt Enable Register */
--#define ATMEL_US_RXRDY (1 << 0) /* Receiver Ready */
--#define ATMEL_US_TXRDY (1 << 1) /* Transmitter Ready */
--#define ATMEL_US_RXBRK (1 << 2) /* Break Received / End of Break */
--#define ATMEL_US_ENDRX (1 << 3) /* End of Receiver Transfer */
--#define ATMEL_US_ENDTX (1 << 4) /* End of Transmitter Transfer */
--#define ATMEL_US_OVRE (1 << 5) /* Overrun Error */
--#define ATMEL_US_FRAME (1 << 6) /* Framing Error */
--#define ATMEL_US_PARE (1 << 7) /* Parity Error */
--#define ATMEL_US_TIMEOUT (1 << 8) /* Receiver Time-out */
--#define ATMEL_US_TXEMPTY (1 << 9) /* Transmitter Empty */
--#define ATMEL_US_ITERATION (1 << 10) /* Max number of Repetitions Reached */
--#define ATMEL_US_TXBUFE (1 << 11) /* Transmission Buffer Empty */
--#define ATMEL_US_RXBUFF (1 << 12) /* Reception Buffer Full */
--#define ATMEL_US_NACK (1 << 13) /* Non Acknowledge */
--#define ATMEL_US_RIIC (1 << 16) /* Ring Indicator Input Change [AT91RM9200 only] */
--#define ATMEL_US_DSRIC (1 << 17) /* Data Set Ready Input Change [AT91RM9200 only] */
--#define ATMEL_US_DCDIC (1 << 18) /* Data Carrier Detect Input Change [AT91RM9200 only] */
--#define ATMEL_US_CTSIC (1 << 19) /* Clear to Send Input Change */
--#define ATMEL_US_RI (1 << 20) /* RI */
--#define ATMEL_US_DSR (1 << 21) /* DSR */
--#define ATMEL_US_DCD (1 << 22) /* DCD */
--#define ATMEL_US_CTS (1 << 23) /* CTS */
--
--#define ATMEL_US_IDR 0x0c /* Interrupt Disable Register */
--#define ATMEL_US_IMR 0x10 /* Interrupt Mask Register */
--#define ATMEL_US_CSR 0x14 /* Channel Status Register */
--#define ATMEL_US_RHR 0x18 /* Receiver Holding Register */
--#define ATMEL_US_THR 0x1c /* Transmitter Holding Register */
--#define ATMEL_US_SYNH (1 << 15) /* Transmit/Receive Sync [AT91SAM9261 only] */
--
--#define ATMEL_US_BRGR 0x20 /* Baud Rate Generator Register */
--#define ATMEL_US_CD (0xffff << 0) /* Clock Divider */
--
--#define ATMEL_US_RTOR 0x24 /* Receiver Time-out Register */
--#define ATMEL_US_TO (0xffff << 0) /* Time-out Value */
--
--#define ATMEL_US_TTGR 0x28 /* Transmitter Timeguard Register */
--#define ATMEL_US_TG (0xff << 0) /* Timeguard Value */
--
--#define ATMEL_US_FIDI 0x40 /* FI DI Ratio Register */
--#define ATMEL_US_NER 0x44 /* Number of Errors Register */
--#define ATMEL_US_IF 0x4c /* IrDA Filter Register */
--
--#endif
---- a/drivers/serial/Kconfig
-+++ b/drivers/serial/Kconfig
-@@ -380,6 +380,21 @@
- console is the device which receives all kernel messages and
- warnings and which allows logins in single user mode).
-
-+config SERIAL_ATMEL_PDC
-+ bool "Support DMA transfers on AT91 / AT32 serial port"
-+ depends on SERIAL_ATMEL
-+ default y
-+ help
-+ Say Y here if you wish to use the PDC to do DMA transfers to
-+ and from the Atmel AT91 / AT32 serial port. In order to
-+ actually use DMA transfers, make sure that the use_dma_tx
-+ and use_dma_rx members in the atmel_uart_data struct is set
-+ appropriately for each port.
-+
-+ Note that break and error handling currently doesn't work
-+ properly when DMA is enabled. Make sure that ports where
-+ this matters don't use DMA.
-+
- config SERIAL_ATMEL_TTYAT
- bool "Install as device ttyATn instead of ttySn"
- depends on SERIAL_ATMEL=y
---- a/drivers/spi/atmel_spi.c
-+++ b/drivers/spi/atmel_spi.c
-@@ -51,7 +51,9 @@
- u8 stopping;
- struct list_head queue;
- struct spi_transfer *current_transfer;
-- unsigned long remaining_bytes;
-+ unsigned long current_remaining_bytes;
-+ struct spi_transfer *next_transfer;
-+ unsigned long next_remaining_bytes;
-
- void *buffer;
- dma_addr_t buffer_dma;
-@@ -113,6 +115,16 @@
- unsigned gpio = (unsigned) spi->controller_data;
- unsigned active = spi->mode & SPI_CS_HIGH;
- u32 mr;
-+ int i;
-+ u32 csr;
-+ u32 cpol = (spi->mode & SPI_CPOL) ? SPI_BIT(CPOL) : 0;
++/*
++ * Supported key formats.
++ *
++ * UBIFS_SIMPLE_KEY_FMT: simple key format
++ */
++enum {
++ UBIFS_SIMPLE_KEY_FMT,
++};
+
-+ /* Make sure clock polarity is correct */
-+ for (i = 0; i < spi->master->num_chipselect; i++) {
-+ csr = spi_readl(as, CSR0 + 4 * i);
-+ if ((csr ^ cpol) & SPI_BIT(CPOL))
-+ spi_writel(as, CSR0 + 4 * i, csr ^ SPI_BIT(CPOL));
-+ }
-
- /* only deactivate *this* device; sometimes transfers to
- * another device may be active when this routine is called.
-@@ -131,6 +143,48 @@
- gpio_set_value(gpio, !active);
- }
-
-+static inline int atmel_spi_xfer_is_last(struct spi_message *msg,
-+ struct spi_transfer *xfer)
-+{
-+ return msg->transfers.prev == &xfer->transfer_list;
-+}
++/*
++ * The simple key format uses 29 bits for storing UBIFS block number and hash
++ * value.
++ */
++#define UBIFS_S_KEY_BLOCK_BITS 29
++#define UBIFS_S_KEY_BLOCK_MASK 0x1FFFFFFF
++#define UBIFS_S_KEY_HASH_BITS UBIFS_S_KEY_BLOCK_BITS
++#define UBIFS_S_KEY_HASH_MASK UBIFS_S_KEY_BLOCK_MASK
+
-+static inline int atmel_spi_xfer_can_be_chained(struct spi_transfer *xfer)
-+{
-+ return xfer->delay_usecs == 0 && !xfer->cs_change;
-+}
++/*
++ * Key types.
++ *
++ * UBIFS_INO_KEY: inode node key
++ * UBIFS_DATA_KEY: data node key
++ * UBIFS_DENT_KEY: directory entry node key
++ * UBIFS_XENT_KEY: extended attribute entry key
++ * UBIFS_KEY_TYPES_CNT: number of supported key types
++ */
++enum {
++ UBIFS_INO_KEY,
++ UBIFS_DATA_KEY,
++ UBIFS_DENT_KEY,
++ UBIFS_XENT_KEY,
++ UBIFS_KEY_TYPES_CNT,
++};
+
-+static void atmel_spi_next_xfer_data(struct spi_master *master,
-+ struct spi_transfer *xfer,
-+ dma_addr_t *tx_dma,
-+ dma_addr_t *rx_dma,
-+ u32 *plen)
-+{
-+ struct atmel_spi *as = spi_master_get_devdata(master);
-+ u32 len = *plen;
++/* Count of LEBs reserved for the superblock area */
++#define UBIFS_SB_LEBS 1
++/* Count of LEBs reserved for the master area */
++#define UBIFS_MST_LEBS 2
++
++/* First LEB of the superblock area */
++#define UBIFS_SB_LNUM 0
++/* First LEB of the master area */
++#define UBIFS_MST_LNUM (UBIFS_SB_LNUM + UBIFS_SB_LEBS)
++/* First LEB of the log area */
++#define UBIFS_LOG_LNUM (UBIFS_MST_LNUM + UBIFS_MST_LEBS)
++
++/* Minimum number of logical eraseblocks in the log */
++#define UBIFS_MIN_LOG_LEBS 2
++/* Minimum number of bud logical eraseblocks */
++#define UBIFS_MIN_BUD_LEBS 2
++/* Minimum number of journal logical eraseblocks */
++#define UBIFS_MIN_JNL_LEBS (UBIFS_MIN_LOG_LEBS + UBIFS_MIN_BUD_LEBS)
++/* Minimum number of LPT area logical eraseblocks */
++#define UBIFS_MIN_LPT_LEBS 2
++/* Minimum number of orphan area logical eraseblocks */
++#define UBIFS_MIN_ORPH_LEBS 1
++/* Minimum number of main area logical eraseblocks */
++#define UBIFS_MIN_MAIN_LEBS 8
++
++/* Minimum number of logical eraseblocks */
++#define UBIFS_MIN_LEB_CNT (UBIFS_SB_LEBS + UBIFS_MST_LEBS + \
++ UBIFS_MIN_LOG_LEBS + UBIFS_MIN_BUD_LEBS + \
++ UBIFS_MIN_LPT_LEBS + UBIFS_MIN_ORPH_LEBS + \
++ UBIFS_MIN_MAIN_LEBS)
++
++/* Node sizes (N.B. these are guaranteed to be multiples of 8) */
++#define UBIFS_CH_SZ sizeof(struct ubifs_ch)
++#define UBIFS_INO_NODE_SZ sizeof(struct ubifs_ino_node)
++#define UBIFS_DATA_NODE_SZ sizeof(struct ubifs_data_node)
++#define UBIFS_DENT_NODE_SZ sizeof(struct ubifs_dent_node)
++#define UBIFS_TRUN_NODE_SZ sizeof(struct ubifs_trun_node)
++#define UBIFS_PAD_NODE_SZ sizeof(struct ubifs_pad_node)
++#define UBIFS_SB_NODE_SZ sizeof(struct ubifs_sb_node)
++#define UBIFS_MST_NODE_SZ sizeof(struct ubifs_mst_node)
++#define UBIFS_REF_NODE_SZ sizeof(struct ubifs_ref_node)
++#define UBIFS_IDX_NODE_SZ sizeof(struct ubifs_idx_node)
++#define UBIFS_CS_NODE_SZ sizeof(struct ubifs_cs_node)
++#define UBIFS_ORPH_NODE_SZ sizeof(struct ubifs_orph_node)
++/* Extended attribute entry nodes are identical to directory entry nodes */
++#define UBIFS_XENT_NODE_SZ UBIFS_DENT_NODE_SZ
++/* Only this does not have to be multiple of 8 bytes */
++#define UBIFS_BRANCH_SZ sizeof(struct ubifs_branch)
++
++/* Maximum node sizes (N.B. these are guaranteed to be multiples of 8) */
++#define UBIFS_MAX_DATA_NODE_SZ (UBIFS_DATA_NODE_SZ + UBIFS_BLOCK_SIZE)
++#define UBIFS_MAX_INO_NODE_SZ (UBIFS_INO_NODE_SZ + UBIFS_MAX_INO_DATA)
++#define UBIFS_MAX_DENT_NODE_SZ (UBIFS_DENT_NODE_SZ + UBIFS_MAX_NLEN + 1)
++#define UBIFS_MAX_XENT_NODE_SZ UBIFS_MAX_DENT_NODE_SZ
++
++/* The largest UBIFS node */
++#define UBIFS_MAX_NODE_SZ UBIFS_MAX_INO_NODE_SZ
+
-+ /* use scratch buffer only when rx or tx data is unspecified */
-+ if (xfer->rx_buf)
-+ *rx_dma = xfer->rx_dma + xfer->len - len;
-+ else {
-+ *rx_dma = as->buffer_dma;
-+ if (len > BUFFER_SIZE)
-+ len = BUFFER_SIZE;
-+ }
-+ if (xfer->tx_buf)
-+ *tx_dma = xfer->tx_dma + xfer->len - len;
-+ else {
-+ *tx_dma = as->buffer_dma;
-+ if (len > BUFFER_SIZE)
-+ len = BUFFER_SIZE;
-+ memset(as->buffer, 0, len);
-+ dma_sync_single_for_device(&as->pdev->dev,
-+ as->buffer_dma, len, DMA_TO_DEVICE);
-+ }
++/*
++ * On-flash inode flags.
++ *
++ * UBIFS_COMPR_FL: use compression for this inode
++ * UBIFS_SYNC_FL: I/O on this inode has to be synchronous
++ * UBIFS_IMMUTABLE_FL: inode is immutable
++ * UBIFS_APPEND_FL: writes to the inode may only append data
++ * UBIFS_DIRSYNC_FL: I/O on this directory inode has to be synchronous
++ *
++ * Note, these are on-flash flags which correspond to ioctl flags
++ * (@FS_COMPR_FL, etc). They have the same values now, but generally, do not
++ * have to be the same.
++ */
++enum {
++ UBIFS_COMPR_FL = 0x01,
++ UBIFS_SYNC_FL = 0x02,
++ UBIFS_IMMUTABLE_FL = 0x04,
++ UBIFS_APPEND_FL = 0x08,
++ UBIFS_DIRSYNC_FL = 0x10,
++};
++
++/* Inode flag bits used by UBIFS */
++#define UBIFS_FL_MASK 0x0000001F
++
++/*
++ * UBIFS compression types.
++ *
++ * UBIFS_COMPR_NONE: no compression
++ * UBIFS_COMPR_LZO: LZO compression
++ * UBIFS_COMPR_ZLIB: ZLIB compression
++ * UBIFS_COMPR_TYPES_CNT: count of supported compression types
++ */
++enum {
++ UBIFS_COMPR_NONE,
++ UBIFS_COMPR_LZO,
++ UBIFS_COMPR_ZLIB,
++ UBIFS_COMPR_TYPES_CNT,
++};
+
-+ *plen = len;
-+}
++/*
++ * UBIFS node types.
++ *
++ * UBIFS_INO_NODE: inode node
++ * UBIFS_DATA_NODE: data node
++ * UBIFS_DENT_NODE: directory entry node
++ * UBIFS_XENT_NODE: extended attribute node
++ * UBIFS_TRUN_NODE: truncation node
++ * UBIFS_PAD_NODE: padding node
++ * UBIFS_SB_NODE: superblock node
++ * UBIFS_MST_NODE: master node
++ * UBIFS_REF_NODE: LEB reference node
++ * UBIFS_IDX_NODE: index node
++ * UBIFS_CS_NODE: commit start node
++ * UBIFS_ORPH_NODE: orphan node
++ * UBIFS_NODE_TYPES_CNT: count of supported node types
++ *
++ * Note, we index arrays by these numbers, so keep them low and contiguous.
++ * Node type constants for inodes, direntries and so on have to be the same as
++ * corresponding key type constants.
++ */
++enum {
++ UBIFS_INO_NODE,
++ UBIFS_DATA_NODE,
++ UBIFS_DENT_NODE,
++ UBIFS_XENT_NODE,
++ UBIFS_TRUN_NODE,
++ UBIFS_PAD_NODE,
++ UBIFS_SB_NODE,
++ UBIFS_MST_NODE,
++ UBIFS_REF_NODE,
++ UBIFS_IDX_NODE,
++ UBIFS_CS_NODE,
++ UBIFS_ORPH_NODE,
++ UBIFS_NODE_TYPES_CNT,
++};
+
- /*
- * Submit next transfer for DMA.
- * lock is held, spi irq is blocked
-@@ -140,53 +194,78 @@
- {
- struct atmel_spi *as = spi_master_get_devdata(master);
- struct spi_transfer *xfer;
-- u32 len;
-+ u32 len, remaining, total;
- dma_addr_t tx_dma, rx_dma;
-
-- xfer = as->current_transfer;
-- if (!xfer || as->remaining_bytes == 0) {
-- if (xfer)
-- xfer = list_entry(xfer->transfer_list.next,
-- struct spi_transfer, transfer_list);
-- else
-- xfer = list_entry(msg->transfers.next,
-- struct spi_transfer, transfer_list);
-- as->remaining_bytes = xfer->len;
-- as->current_transfer = xfer;
-+ if (!as->current_transfer)
-+ xfer = list_entry(msg->transfers.next,
-+ struct spi_transfer, transfer_list);
-+ else if (!as->next_transfer)
-+ xfer = list_entry(as->current_transfer->transfer_list.next,
-+ struct spi_transfer, transfer_list);
-+ else
-+ xfer = NULL;
++/*
++ * Master node flags.
++ *
++ * UBIFS_MST_DIRTY: rebooted uncleanly - master node is dirty
++ * UBIFS_MST_NO_ORPHS: no orphan inodes present
++ * UBIFS_MST_RCVRY: written by recovery
++ */
++enum {
++ UBIFS_MST_DIRTY = 1,
++ UBIFS_MST_NO_ORPHS = 2,
++ UBIFS_MST_RCVRY = 4,
++};
+
-+ if (xfer) {
-+ len = xfer->len;
-+ atmel_spi_next_xfer_data(master, xfer, &tx_dma, &rx_dma, &len);
-+ remaining = xfer->len - len;
++/*
++ * Node group type (used by recovery to recover whole group or none).
++ *
++ * UBIFS_NO_NODE_GROUP: this node is not part of a group
++ * UBIFS_IN_NODE_GROUP: this node is a part of a group
++ * UBIFS_LAST_OF_NODE_GROUP: this node is the last in a group
++ */
++enum {
++ UBIFS_NO_NODE_GROUP = 0,
++ UBIFS_IN_NODE_GROUP,
++ UBIFS_LAST_OF_NODE_GROUP,
++};
+
-+ spi_writel(as, RPR, rx_dma);
-+ spi_writel(as, TPR, tx_dma);
++/*
++ * Superblock flags.
++ *
++ * UBIFS_FLG_BIGLPT: if "big" LPT model is used if set
++ */
++enum {
++ UBIFS_FLG_BIGLPT = 0x02,
++};
+
-+ if (msg->spi->bits_per_word > 8)
-+ len >>= 1;
-+ spi_writel(as, RCR, len);
-+ spi_writel(as, TCR, len);
++/**
++ * struct ubifs_ch - common header node.
++ * @magic: UBIFS node magic number (%UBIFS_NODE_MAGIC)
++ * @crc: CRC-32 checksum of the node header
++ * @sqnum: sequence number
++ * @len: full node length
++ * @node_type: node type
++ * @group_type: node group type
++ * @padding: reserved for future, zeroes
++ *
++ * Every UBIFS node starts with this common part. If the node has a key, the
++ * key always goes next.
++ */
++struct ubifs_ch {
++ __le32 magic;
++ __le32 crc;
++ __le64 sqnum;
++ __le32 len;
++ __u8 node_type;
++ __u8 group_type;
++ __u8 padding[2];
++} __attribute__ ((packed));
+
-+ dev_dbg(&msg->spi->dev,
-+ " start xfer %p: len %u tx %p/%08x rx %p/%08x\n",
-+ xfer, xfer->len, xfer->tx_buf, xfer->tx_dma,
-+ xfer->rx_buf, xfer->rx_dma);
-+ } else {
-+ xfer = as->next_transfer;
-+ remaining = as->next_remaining_bytes;
- }
-
-- len = as->remaining_bytes;
-+ as->current_transfer = xfer;
-+ as->current_remaining_bytes = remaining;
-
-- tx_dma = xfer->tx_dma + xfer->len - len;
-- rx_dma = xfer->rx_dma + xfer->len - len;
-+ if (remaining > 0)
-+ len = remaining;
-+ else if (!atmel_spi_xfer_is_last(msg, xfer)
-+ && atmel_spi_xfer_can_be_chained(xfer)) {
-+ xfer = list_entry(xfer->transfer_list.next,
-+ struct spi_transfer, transfer_list);
-+ len = xfer->len;
-+ } else
-+ xfer = NULL;
-
-- /* use scratch buffer only when rx or tx data is unspecified */
-- if (!xfer->rx_buf) {
-- rx_dma = as->buffer_dma;
-- if (len > BUFFER_SIZE)
-- len = BUFFER_SIZE;
-- }
-- if (!xfer->tx_buf) {
-- tx_dma = as->buffer_dma;
-- if (len > BUFFER_SIZE)
-- len = BUFFER_SIZE;
-- memset(as->buffer, 0, len);
-- dma_sync_single_for_device(&as->pdev->dev,
-- as->buffer_dma, len, DMA_TO_DEVICE);
-- }
-+ as->next_transfer = xfer;
-
-- spi_writel(as, RPR, rx_dma);
-- spi_writel(as, TPR, tx_dma);
-+ if (xfer) {
-+ total = len;
-+ atmel_spi_next_xfer_data(master, xfer, &tx_dma, &rx_dma, &len);
-+ as->next_remaining_bytes = total - len;
-+
-+ spi_writel(as, RNPR, rx_dma);
-+ spi_writel(as, TNPR, tx_dma);
-+
-+ if (msg->spi->bits_per_word > 8)
-+ len >>= 1;
-+ spi_writel(as, RNCR, len);
-+ spi_writel(as, TNCR, len);
-+
-+ dev_dbg(&msg->spi->dev,
-+ " next xfer %p: len %u tx %p/%08x rx %p/%08x\n",
-+ xfer, xfer->len, xfer->tx_buf, xfer->tx_dma,
-+ xfer->rx_buf, xfer->rx_dma);
-+ } else {
-+ spi_writel(as, RNCR, 0);
-+ spi_writel(as, TNCR, 0);
-+ }
-
-- as->remaining_bytes -= len;
-- if (msg->spi->bits_per_word > 8)
-- len >>= 1;
--
-- /* REVISIT: when xfer->delay_usecs == 0, the PDC "next transfer"
-- * mechanism might help avoid the IRQ latency between transfers
-- * (and improve the nCS0 errata handling on at91rm9200 chips)
-- *
-- * We're also waiting for ENDRX before we start the next
-+ /* REVISIT: We're waiting for ENDRX before we start the next
- * transfer because we need to handle some difficult timing
- * issues otherwise. If we wait for ENDTX in one transfer and
- * then starts waiting for ENDRX in the next, it's difficult
-@@ -196,17 +275,7 @@
- *
- * It should be doable, though. Just not now...
- */
-- spi_writel(as, TNCR, 0);
-- spi_writel(as, RNCR, 0);
- spi_writel(as, IER, SPI_BIT(ENDRX) | SPI_BIT(OVRES));
--
-- dev_dbg(&msg->spi->dev,
-- " start xfer %p: len %u tx %p/%08x rx %p/%08x imr %03x\n",
-- xfer, xfer->len, xfer->tx_buf, xfer->tx_dma,
-- xfer->rx_buf, xfer->rx_dma, spi_readl(as, IMR));
--
-- spi_writel(as, RCR, len);
-- spi_writel(as, TCR, len);
- spi_writel(as, PTCR, SPI_BIT(TXTEN) | SPI_BIT(RXTEN));
- }
-
-@@ -304,6 +373,7 @@
- spin_lock(&as->lock);
-
- as->current_transfer = NULL;
-+ as->next_transfer = NULL;
-
- /* continue if needed */
- if (list_empty(&as->queue) || as->stopping)
-@@ -387,7 +457,7 @@
-
- spi_writel(as, IDR, pending);
-
-- if (as->remaining_bytes == 0) {
-+ if (as->current_remaining_bytes == 0) {
- msg->actual_length += xfer->len;
-
- if (!msg->is_dma_mapped)
-@@ -397,7 +467,7 @@
- if (xfer->delay_usecs)
- udelay(xfer->delay_usecs);
-
-- if (msg->transfers.prev == &xfer->transfer_list) {
-+ if (atmel_spi_xfer_is_last(msg, xfer)) {
- /* report completed message */
- atmel_spi_msg_done(master, as, msg, 0,
- xfer->cs_change);
-@@ -500,9 +570,14 @@
- if (!(spi->mode & SPI_CPHA))
- csr |= SPI_BIT(NCPHA);
-
-- /* TODO: DLYBS and DLYBCT */
-- csr |= SPI_BF(DLYBS, 10);
-- csr |= SPI_BF(DLYBCT, 10);
-+ /* DLYBS is mostly irrelevant since we manage chipselect using GPIOs.
-+ *
-+ * DLYBCT would add delays between words, slowing down transfers.
-+ * It could potentially be useful to cope with DMA bottlenecks, but
-+ * in those cases it's probably best to just use a lower bitrate.
-+ */
-+ csr |= SPI_BF(DLYBS, 0);
-+ csr |= SPI_BF(DLYBCT, 0);
-
- /* chipselect must have been muxed as GPIO (e.g. in board setup) */
- npcs_pin = (unsigned int)spi->controller_data;
---- a/drivers/usb/gadget/atmel_usba_udc.c
-+++ b/drivers/usb/gadget/atmel_usba_udc.c
-@@ -18,6 +18,7 @@
- #include <linux/platform_device.h>
- #include <linux/usb/ch9.h>
- #include <linux/usb/gadget.h>
-+#include <linux/usb/atmel_usba_udc.h>
- #include <linux/delay.h>
-
- #include <asm/gpio.h>
-@@ -27,6 +28,7 @@
-
-
- static struct usba_udc the_udc;
-+static struct usba_ep *usba_ep;
-
- #ifdef CONFIG_USB_GADGET_DEBUG_FS
- #include <linux/debugfs.h>
-@@ -324,53 +326,6 @@
- return 1;
- }
-
--static void copy_to_fifo(void __iomem *fifo, const void *buf, int len)
--{
-- unsigned long tmp;
--
-- DBG(DBG_FIFO, "copy to FIFO (len %d):\n", len);
-- for (; len > 0; len -= 4, buf += 4, fifo += 4) {
-- tmp = *(unsigned long *)buf;
-- if (len >= 4) {
-- DBG(DBG_FIFO, " -> %08lx\n", tmp);
-- __raw_writel(tmp, fifo);
-- } else {
-- do {
-- DBG(DBG_FIFO, " -> %02lx\n", tmp >> 24);
-- __raw_writeb(tmp >> 24, fifo);
-- fifo++;
-- tmp <<= 8;
-- } while (--len);
-- break;
-- }
-- }
--}
--
--static void copy_from_fifo(void *buf, void __iomem *fifo, int len)
--{
-- union {
-- unsigned long *w;
-- unsigned char *b;
-- } p;
-- unsigned long tmp;
--
-- DBG(DBG_FIFO, "copy from FIFO (len %d):\n", len);
-- for (p.w = buf; len > 0; len -= 4, p.w++, fifo += 4) {
-- if (len >= 4) {
-- tmp = __raw_readl(fifo);
-- *p.w = tmp;
-- DBG(DBG_FIFO, " -> %08lx\n", tmp);
-- } else {
-- do {
-- tmp = __raw_readb(fifo);
-- *p.b = tmp;
-- DBG(DBG_FIFO, " -> %02lx\n", tmp);
-- fifo++, p.b++;
-- } while (--len);
-- }
-- }
--}
--
- static void next_fifo_transaction(struct usba_ep *ep, struct usba_request *req)
- {
- unsigned int transaction_len;
-@@ -387,7 +342,7 @@
- ep->ep.name, req, transaction_len,
- req->last_transaction ? ", done" : "");
-
-- copy_to_fifo(ep->fifo, req->req.buf + req->req.actual, transaction_len);
-+ memcpy_toio(ep->fifo, req->req.buf + req->req.actual, transaction_len);
- usba_ep_writel(ep, SET_STA, USBA_TX_PK_RDY);
- req->req.actual += transaction_len;
- }
-@@ -476,7 +431,7 @@
- bytecount = req->req.length - req->req.actual;
- }
-
-- copy_from_fifo(req->req.buf + req->req.actual,
-+ memcpy_fromio(req->req.buf + req->req.actual,
- ep->fifo, bytecount);
- req->req.actual += bytecount;
-
-@@ -1029,33 +984,6 @@
- .set_selfpowered = usba_udc_set_selfpowered,
- };
-
--#define EP(nam, idx, maxpkt, maxbk, dma, isoc) \
--{ \
-- .ep = { \
-- .ops = &usba_ep_ops, \
-- .name = nam, \
-- .maxpacket = maxpkt, \
-- }, \
-- .udc = &the_udc, \
-- .queue = LIST_HEAD_INIT(usba_ep[idx].queue), \
-- .fifo_size = maxpkt, \
-- .nr_banks = maxbk, \
-- .index = idx, \
-- .can_dma = dma, \
-- .can_isoc = isoc, \
--}
--
--static struct usba_ep usba_ep[] = {
-- EP("ep0", 0, 64, 1, 0, 0),
-- EP("ep1in-bulk", 1, 512, 2, 1, 1),
-- EP("ep2out-bulk", 2, 512, 2, 1, 1),
-- EP("ep3in-int", 3, 64, 3, 1, 0),
-- EP("ep4out-int", 4, 64, 3, 1, 0),
-- EP("ep5in-iso", 5, 1024, 3, 1, 1),
-- EP("ep6out-iso", 6, 1024, 3, 1, 1),
--};
--#undef EP
--
- static struct usb_endpoint_descriptor usba_ep0_desc = {
- .bLength = USB_DT_ENDPOINT_SIZE,
- .bDescriptorType = USB_DT_ENDPOINT,
-@@ -1074,7 +1002,6 @@
- static struct usba_udc the_udc = {
- .gadget = {
- .ops = &usba_udc_ops,
-- .ep0 = &usba_ep[0].ep,
- .ep_list = LIST_HEAD_INIT(the_udc.gadget.ep_list),
- .is_dualspeed = 1,
- .name = "atmel_usba_udc",
-@@ -1231,7 +1158,7 @@
- } else {
- usba_ep_writel(ep, CTL_ENB, USBA_EPT_ENABLE);
- usba_writel(udc, TST, USBA_TST_PKT_MODE);
-- copy_to_fifo(ep->fifo, test_packet_buffer,
-+ memcpy_toio(ep->fifo, test_packet_buffer,
- sizeof(test_packet_buffer));
- usba_ep_writel(ep, SET_STA, USBA_TX_PK_RDY);
- dev_info(dev, "Entering Test_Packet mode...\n");
-@@ -1539,7 +1466,7 @@
- }
-
- DBG(DBG_FIFO, "Copying ctrl request from 0x%p:\n", ep->fifo);
-- copy_from_fifo(crq.data, ep->fifo, sizeof(crq));
-+ memcpy_fromio(crq.data, ep->fifo, sizeof(crq));
-
- /* Free up one bank in the FIFO so that we can
- * generate or receive a reply right away. */
-@@ -1911,7 +1838,7 @@
-
- regs = platform_get_resource(pdev, IORESOURCE_MEM, CTRL_IOMEM_ID);
- fifo = platform_get_resource(pdev, IORESOURCE_MEM, FIFO_IOMEM_ID);
-- if (!regs || !fifo)
-+ if (!regs || !fifo || !pdata)
- return -ENXIO;
-
- irq = platform_get_irq(pdev, 0);
-@@ -1959,16 +1886,44 @@
- usba_writel(udc, CTRL, 0);
- clk_disable(pclk);
-
-+ usba_ep = kmalloc(sizeof(struct usba_ep) * pdata->num_ep,
-+ GFP_KERNEL);
-+ if (!usba_ep)
-+ goto err_alloc_ep;
++/**
++ * union ubifs_dev_desc - device node descriptor.
++ * @new: new type device descriptor
++ * @huge: huge type device descriptor
++ *
++ * This data structure describes major/minor numbers of a device node. In an
++ * inode is a device node then its data contains an object of this type. UBIFS
++ * uses standard Linux "new" and "huge" device node encodings.
++ */
++union ubifs_dev_desc {
++ __le32 new;
++ __le64 huge;
++} __attribute__ ((packed));
++
++/**
++ * struct ubifs_ino_node - inode node.
++ * @ch: common header
++ * @key: node key
++ * @creat_sqnum: sequence number at time of creation
++ * @size: inode size in bytes (amount of uncompressed data)
++ * @atime_sec: access time seconds
++ * @ctime_sec: creation time seconds
++ * @mtime_sec: modification time seconds
++ * @atime_nsec: access time nanoseconds
++ * @ctime_nsec: creation time nanoseconds
++ * @mtime_nsec: modification time nanoseconds
++ * @nlink: number of hard links
++ * @uid: owner ID
++ * @gid: group ID
++ * @mode: access flags
++ * @flags: per-inode flags (%UBIFS_COMPR_FL, %UBIFS_SYNC_FL, etc)
++ * @data_len: inode data length
++ * @xattr_cnt: count of extended attributes this inode has
++ * @xattr_size: summarized size of all extended attributes in bytes
++ * @xattr_names: sum of lengths of all extended attribute names belonging to
++ * this inode
++ * @compr_type: compression type used for this inode
++ * @padding: reserved for future, zeroes
++ * @data: data attached to the inode
++ *
++ * Note, even though inode compression type is defined by @compr_type, some
++ * nodes of this inode may be compressed with different compressor - this
++ * happens if compression type is changed while the inode already has data
++ * nodes. But @compr_type will be use for further writes to the inode.
++ *
++ * Note, do not forget to amend 'zero_ino_node_unused()' function when changing
++ * the padding fields.
++ */
++struct ubifs_ino_node {
++ struct ubifs_ch ch;
++ __u8 key[UBIFS_MAX_KEY_LEN];
++ __le64 creat_sqnum;
++ __le64 size;
++ __le64 atime_sec;
++ __le64 ctime_sec;
++ __le64 mtime_sec;
++ __le32 atime_nsec;
++ __le32 ctime_nsec;
++ __le32 mtime_nsec;
++ __le32 nlink;
++ __le32 uid;
++ __le32 gid;
++ __le32 mode;
++ __le32 flags;
++ __le32 data_len;
++ __le32 xattr_cnt;
++ __le64 xattr_size;
++ __le32 xattr_names;
++ __le16 compr_type;
++ __u8 padding[26]; /* Watch 'zero_ino_node_unused()' if changing! */
++ __u8 data[];
++} __attribute__ ((packed));
++
++/**
++ * struct ubifs_dent_node - directory entry node.
++ * @ch: common header
++ * @key: node key
++ * @inum: target inode number
++ * @padding1: reserved for future, zeroes
++ * @type: type of the target inode (%UBIFS_ITYPE_REG, %UBIFS_ITYPE_DIR, etc)
++ * @nlen: name length
++ * @padding2: reserved for future, zeroes
++ * @name: zero-terminated name
++ *
++ * Note, do not forget to amend 'zero_dent_node_unused()' function when
++ * changing the padding fields.
++ */
++struct ubifs_dent_node {
++ struct ubifs_ch ch;
++ __u8 key[UBIFS_MAX_KEY_LEN];
++ __le64 inum;
++ __u8 padding1;
++ __u8 type;
++ __le16 nlen;
++ __u8 padding2[4]; /* Watch 'zero_dent_node_unused()' if changing! */
++ __u8 name[];
++} __attribute__ ((packed));
+
-+ the_udc.gadget.ep0 = &usba_ep[0].ep;
++/**
++ * struct ubifs_data_node - data node.
++ * @ch: common header
++ * @key: node key
++ * @size: uncompressed data size in bytes
++ * @compr_type: compression type (%UBIFS_COMPR_NONE, %UBIFS_COMPR_LZO, etc)
++ * @padding: reserved for future, zeroes
++ * @data: data
++ *
++ * Note, do not forget to amend 'zero_data_node_unused()' function when
++ * changing the padding fields.
++ */
++struct ubifs_data_node {
++ struct ubifs_ch ch;
++ __u8 key[UBIFS_MAX_KEY_LEN];
++ __le32 size;
++ __le16 compr_type;
++ __u8 padding[2]; /* Watch 'zero_data_node_unused()' if changing! */
++ __u8 data[];
++} __attribute__ ((packed));
+
- INIT_LIST_HEAD(&usba_ep[0].ep.ep_list);
- usba_ep[0].ep_regs = udc->regs + USBA_EPT_BASE(0);
- usba_ep[0].dma_regs = udc->regs + USBA_DMA_BASE(0);
- usba_ep[0].fifo = udc->fifo + USBA_FIFO_BASE(0);
-- for (i = 1; i < ARRAY_SIZE(usba_ep); i++) {
-+ usba_ep[0].ep.ops = &usba_ep_ops;
-+ usba_ep[0].ep.name = pdata->ep[0].name;
-+ usba_ep[0].ep.maxpacket = pdata->ep[0].fifo_size;
-+ usba_ep[0].udc = &the_udc;
-+ INIT_LIST_HEAD(&usba_ep[0].queue);
-+ usba_ep[0].fifo_size = pdata->ep[0].fifo_size;
-+ usba_ep[0].nr_banks = pdata->ep[0].nr_banks;
-+ usba_ep[0].index = pdata->ep[0].index;
-+ usba_ep[0].can_dma = pdata->ep[0].can_dma;
-+ usba_ep[0].can_isoc = pdata->ep[0].can_isoc;
++/**
++ * struct ubifs_trun_node - truncation node.
++ * @ch: common header
++ * @inum: truncated inode number
++ * @padding: reserved for future, zeroes
++ * @old_size: size before truncation
++ * @new_size: size after truncation
++ *
++ * This node exists only in the journal and never goes to the main area. Note,
++ * do not forget to amend 'zero_trun_node_unused()' function when changing the
++ * padding fields.
++ */
++struct ubifs_trun_node {
++ struct ubifs_ch ch;
++ __le32 inum;
++ __u8 padding[12]; /* Watch 'zero_trun_node_unused()' if changing! */
++ __le64 old_size;
++ __le64 new_size;
++} __attribute__ ((packed));
+
-+ for (i = 1; i < pdata->num_ep; i++) {
- struct usba_ep *ep = &usba_ep[i];
-
- ep->ep_regs = udc->regs + USBA_EPT_BASE(i);
- ep->dma_regs = udc->regs + USBA_DMA_BASE(i);
- ep->fifo = udc->fifo + USBA_FIFO_BASE(i);
-+ ep->ep.ops = &usba_ep_ops;
-+ ep->ep.name = pdata->ep[i].name;
-+ ep->ep.maxpacket = pdata->ep[i].fifo_size;
-+ ep->udc = &the_udc;
-+ INIT_LIST_HEAD(&ep->queue);
-+ ep->fifo_size = pdata->ep[i].fifo_size;
-+ ep->nr_banks = pdata->ep[i].nr_banks;
-+ ep->index = pdata->ep[i].index;
-+ ep->can_dma = pdata->ep[i].can_dma;
-+ ep->can_isoc = pdata->ep[i].can_isoc;
-
- list_add_tail(&ep->ep.ep_list, &udc->gadget.ep_list);
- }
-@@ -1987,7 +1942,7 @@
- goto err_device_add;
- }
-
-- if (pdata && pdata->vbus_pin != GPIO_PIN_NONE) {
-+ if (pdata->vbus_pin >= 0) {
- if (!gpio_request(pdata->vbus_pin, "atmel_usba_udc")) {
- udc->vbus_pin = pdata->vbus_pin;
-
-@@ -2007,7 +1962,7 @@
- }
-
- usba_init_debugfs(udc);
-- for (i = 1; i < ARRAY_SIZE(usba_ep); i++)
-+ for (i = 1; i < pdata->num_ep; i++)
- usba_ep_init_debugfs(udc, &usba_ep[i]);
-
- return 0;
-@@ -2015,6 +1970,8 @@
- err_device_add:
- free_irq(irq, udc);
- err_request_irq:
-+ kfree(usba_ep);
-+err_alloc_ep:
- iounmap(udc->fifo);
- err_map_fifo:
- iounmap(udc->regs);
-@@ -2032,10 +1989,11 @@
- {
- struct usba_udc *udc;
- int i;
-+ struct usba_platform_data *pdata = pdev->dev.platform_data;
-
- udc = platform_get_drvdata(pdev);
-
-- for (i = 1; i < ARRAY_SIZE(usba_ep); i++)
-+ for (i = 1; i < pdata->num_ep; i++)
- usba_ep_cleanup_debugfs(&usba_ep[i]);
- usba_cleanup_debugfs(udc);
-
---- a/drivers/video/atmel_lcdfb.c
-+++ b/drivers/video/atmel_lcdfb.c
-@@ -16,6 +16,7 @@
- #include <linux/fb.h>
- #include <linux/init.h>
- #include <linux/delay.h>
-+#include <linux/backlight.h>
-
- #include <asm/arch/board.h>
- #include <asm/arch/cpu.h>
-@@ -37,7 +38,9 @@
- #endif
-
- #if defined(CONFIG_ARCH_AT91)
--#define ATMEL_LCDFB_FBINFO_DEFAULT FBINFO_DEFAULT
-+#define ATMEL_LCDFB_FBINFO_DEFAULT (FBINFO_DEFAULT \
-+ | FBINFO_PARTIAL_PAN_OK \
-+ | FBINFO_HWACCEL_YPAN)
-
- static inline void atmel_lcdfb_update_dma2d(struct atmel_lcdfb_info *sinfo,
- struct fb_var_screeninfo *var)
-@@ -69,12 +72,113 @@
- }
- #endif
-
-+static const u32 contrast_ctr = ATMEL_LCDC_PS_DIV8
-+ | ATMEL_LCDC_POL_POSITIVE
-+ | ATMEL_LCDC_ENA_PWMENABLE;
++/**
++ * struct ubifs_pad_node - padding node.
++ * @ch: common header
++ * @pad_len: how many bytes after this node are unused (because padded)
++ * @padding: reserved for future, zeroes
++ */
++struct ubifs_pad_node {
++ struct ubifs_ch ch;
++ __le32 pad_len;
++} __attribute__ ((packed));
++
++/**
++ * struct ubifs_sb_node - superblock node.
++ * @ch: common header
++ * @padding: reserved for future, zeroes
++ * @key_hash: type of hash function used in keys
++ * @key_fmt: format of the key
++ * @flags: file-system flags (%UBIFS_FLG_BIGLPT, etc)
++ * @min_io_size: minimal input/output unit size
++ * @leb_size: logical eraseblock size in bytes
++ * @leb_cnt: count of LEBs used by filesystem
++ * @max_leb_cnt: maximum count of LEBs used by filesystem
++ * @max_bud_bytes: maximum amount of data stored in buds
++ * @log_lebs: log size in logical eraseblocks
++ * @lpt_lebs: number of LEBs used for lprops table
++ * @orph_lebs: number of LEBs used for recording orphans
++ * @jhead_cnt: count of journal heads
++ * @fanout: tree fanout (max. number of links per indexing node)
++ * @lsave_cnt: number of LEB numbers in LPT's save table
++ * @fmt_version: UBIFS on-flash format version
++ * @default_compr: default compression
++ * @padding1: reserved for future, zeroes
++ * @rp_uid: reserve pool UID
++ * @rp_gid: reserve pool GID
++ * @rp_size: size of the reserved pool in bytes
++ * @padding2: reserved for future, zeroes
++ * @time_gran: time granularity in nanoseconds
++ * @uuid: UUID generated when the file system image was created
++ */
++struct ubifs_sb_node {
++ struct ubifs_ch ch;
++ __u8 padding[2];
++ __u8 key_hash;
++ __u8 key_fmt;
++ __le32 flags;
++ __le32 min_io_size;
++ __le32 leb_size;
++ __le32 leb_cnt;
++ __le32 max_leb_cnt;
++ __le64 max_bud_bytes;
++ __le32 log_lebs;
++ __le32 lpt_lebs;
++ __le32 orph_lebs;
++ __le32 jhead_cnt;
++ __le32 fanout;
++ __le32 lsave_cnt;
++ __le32 fmt_version;
++ __le16 default_compr;
++ __u8 padding1[2];
++ __le32 rp_uid;
++ __le32 rp_gid;
++ __le64 rp_size;
++ __le32 time_gran;
++ __u8 uuid[16];
++ __u8 padding2[3972];
++} __attribute__ ((packed));
++
++/**
++ * struct ubifs_mst_node - master node.
++ * @ch: common header
++ * @highest_inum: highest inode number in the committed index
++ * @cmt_no: commit number
++ * @flags: various flags (%UBIFS_MST_DIRTY, etc)
++ * @log_lnum: start of the log
++ * @root_lnum: LEB number of the root indexing node
++ * @root_offs: offset within @root_lnum
++ * @root_len: root indexing node length
++ * @gc_lnum: LEB reserved for garbage collection (%-1 value means the LEB was
++ * not reserved and should be reserved on mount)
++ * @ihead_lnum: LEB number of index head
++ * @ihead_offs: offset of index head
++ * @index_size: size of index on flash
++ * @total_free: total free space in bytes
++ * @total_dirty: total dirty space in bytes
++ * @total_used: total used space in bytes (includes only data LEBs)
++ * @total_dead: total dead space in bytes (includes only data LEBs)
++ * @total_dark: total dark space in bytes (includes only data LEBs)
++ * @lpt_lnum: LEB number of LPT root nnode
++ * @lpt_offs: offset of LPT root nnode
++ * @nhead_lnum: LEB number of LPT head
++ * @nhead_offs: offset of LPT head
++ * @ltab_lnum: LEB number of LPT's own lprops table
++ * @ltab_offs: offset of LPT's own lprops table
++ * @lsave_lnum: LEB number of LPT's save table (big model only)
++ * @lsave_offs: offset of LPT's save table (big model only)
++ * @lscan_lnum: LEB number of last LPT scan
++ * @empty_lebs: number of empty logical eraseblocks
++ * @idx_lebs: number of indexing logical eraseblocks
++ * @leb_cnt: count of LEBs used by filesystem
++ * @padding: reserved for future, zeroes
++ */
++struct ubifs_mst_node {
++ struct ubifs_ch ch;
++ __le64 highest_inum;
++ __le64 cmt_no;
++ __le32 flags;
++ __le32 log_lnum;
++ __le32 root_lnum;
++ __le32 root_offs;
++ __le32 root_len;
++ __le32 gc_lnum;
++ __le32 ihead_lnum;
++ __le32 ihead_offs;
++ __le64 index_size;
++ __le64 total_free;
++ __le64 total_dirty;
++ __le64 total_used;
++ __le64 total_dead;
++ __le64 total_dark;
++ __le32 lpt_lnum;
++ __le32 lpt_offs;
++ __le32 nhead_lnum;
++ __le32 nhead_offs;
++ __le32 ltab_lnum;
++ __le32 ltab_offs;
++ __le32 lsave_lnum;
++ __le32 lsave_offs;
++ __le32 lscan_lnum;
++ __le32 empty_lebs;
++ __le32 idx_lebs;
++ __le32 leb_cnt;
++ __u8 padding[344];
++} __attribute__ ((packed));
++
++/**
++ * struct ubifs_ref_node - logical eraseblock reference node.
++ * @ch: common header
++ * @lnum: the referred logical eraseblock number
++ * @offs: start offset in the referred LEB
++ * @jhead: journal head number
++ * @padding: reserved for future, zeroes
++ */
++struct ubifs_ref_node {
++ struct ubifs_ch ch;
++ __le32 lnum;
++ __le32 offs;
++ __le32 jhead;
++ __u8 padding[28];
++} __attribute__ ((packed));
++
++/**
++ * struct ubifs_branch - key/reference/length branch
++ * @lnum: LEB number of the target node
++ * @offs: offset within @lnum
++ * @len: target node length
++ * @key: key
++ */
++struct ubifs_branch {
++ __le32 lnum;
++ __le32 offs;
++ __le32 len;
++ __u8 key[];
++} __attribute__ ((packed));
++
++/**
++ * struct ubifs_idx_node - indexing node.
++ * @ch: common header
++ * @child_cnt: number of child index nodes
++ * @level: tree level
++ * @branches: LEB number / offset / length / key branches
++ */
++struct ubifs_idx_node {
++ struct ubifs_ch ch;
++ __le16 child_cnt;
++ __le16 level;
++ __u8 branches[];
++} __attribute__ ((packed));
++
++/**
++ * struct ubifs_cs_node - commit start node.
++ * @ch: common header
++ * @cmt_no: commit number
++ */
++struct ubifs_cs_node {
++ struct ubifs_ch ch;
++ __le64 cmt_no;
++} __attribute__ ((packed));
++
++/**
++ * struct ubifs_orph_node - orphan node.
++ * @ch: common header
++ * @cmt_no: commit number (also top bit is set on the last node of the commit)
++ * @inos: inode numbers of orphans
++ */
++struct ubifs_orph_node {
++ struct ubifs_ch ch;
++ __le64 cmt_no;
++ __le64 inos[];
++} __attribute__ ((packed));
++
++#endif /* __UBIFS_MEDIA_H__ */
+diff --exclude=.git -urN linux-2.6.25.6/fs/ubifs/xattr.c avr32-2.6/fs/ubifs/xattr.c
+--- linux-2.6.25.6/fs/ubifs/xattr.c 1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/fs/ubifs/xattr.c 2008-06-12 15:09:45.603817614 +0200
+@@ -0,0 +1,581 @@
++/*
++ * This file is part of UBIFS.
++ *
++ * Copyright (C) 2006-2008 Nokia Corporation.
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published by
++ * the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but WITHOUT
++ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
++ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
++ * more details.
++ *
++ * You should have received a copy of the GNU General Public License along with
++ * this program; if not, write to the Free Software Foundation, Inc., 51
++ * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
++ *
++ * Authors: Artem Bityutskiy (Битюцкий Артём)
++ * Adrian Hunter
++ */
++
++/*
++ * This file implements UBIFS extended attributes support.
++ *
++ * Extended attributes are implemented as regular inodes with attached data,
++ * which limits extended attribute size to UBIFS block size (4KiB). Names of
++ * extended attributes are described by extended attribute entries (xentries),
++ * which are almost identical to directory entries, but have different key type.
++ *
++ * In other words, the situation with extended attributes is very similar to
++ * directories. Indeed, any inode (but of course not xattr inodes) may have a
++ * number of associated xentries, just like directory inodes have associated
++ * directory entries. Extended attribute entries store the name of the extended
++ * attribute, the host inode number, and the extended attribute inode number.
++ * Similarly, direntries store the name, the parent and the target inode
++ * numbers. Thus, most of the common UBIFS mechanisms may be re-used for
++ * extended attributes.
++ *
++ * The number of extended attributes is not limited, but there is Linux
++ * limitation on the maximum possible size of the list of all extended
++ * attributes associated with an inode (%XATTR_LIST_MAX), so UBIFS makes sure
++ * the sum of all extended attribute names of the inode does not exceed that
++ * limit.
++ *
++ * Extended attributes are synchronous, which means they are written to the
++ * flash media synchronously and there is no write-back for extended attribute
++ * inodes. The extended attribute values are not stored in compressed form on
++ * the media.
++ *
++ * Since extended attributes are represented by regular inodes, they are cached
++ * in the VFS inode cache. The xentries are cached in the LNC cache (see
++ * tnc.c).
++ *
++ * ACL support is not implemented.
++ */
++
++#include <linux/xattr.h>
++#include <linux/posix_acl_xattr.h>
++#include "ubifs.h"
++
++/*
++ * Extended attribute type constants.
++ *
++ * USER_XATTR: user extended attribute ("user.*")
++ * TRUSTED_XATTR: trusted extended attribute ("trusted.*)
++ * SECURITY_XATTR: security extended attribute ("security.*")
++ */
++enum {
++ USER_XATTR,
++ TRUSTED_XATTR,
++ SECURITY_XATTR,
++};
+
-+#ifdef CONFIG_BACKLIGHT_ATMEL_LCDC
++static struct inode_operations none_inode_operations;
++static struct address_space_operations none_address_operations;
++static struct file_operations none_file_operations;
+
-+/* some bl->props field just changed */
-+static int atmel_bl_update_status(struct backlight_device *bl)
++/**
++ * create_xattr - create an extended attribute.
++ * @c: UBIFS file-system description object
++ * @host: host inode
++ * @nm: extended attribute name
++ * @value: extended attribute value
++ * @size: size of extended attribute value
++ *
++ * This is a helper function which creates an extended attribute of name @nm
++ * and value @value for inode @host. The host inode is also updated on flash
++ * because the ctime and extended attribute accounting data changes. This
++ * function returns zero in case of success and a negative error code in case
++ * of failure.
++ */
++static int create_xattr(struct ubifs_info *c, struct inode *host,
++ const struct qstr *nm, const void *value, int size)
+{
-+ struct atmel_lcdfb_info *sinfo = bl_get_data(bl);
-+ int power = sinfo->bl_power;
-+ int brightness = bl->props.brightness;
++ struct ubifs_inode *ui, *host_ui = ubifs_inode(host);
++ struct ubifs_budget_req req = { .new_ino = 1, .new_dent = 1,
++ .new_ino_d = size };
++ struct inode *inode;
++ int err;
+
-+ /* REVISIT there may be a meaningful difference between
-+ * fb_blank and power ... there seem to be some cases
-+ * this doesn't handle correctly.
++ /*
++ * Linux limits the maximum size of the extended attribute names list
++ * to %XATTR_LIST_MAX. This means we should not allow creating more*
++ * extended attributes if the name list becomes larger. This limitation
++ * is artificial for UBIFS, though.
+ */
-+ if (bl->props.fb_blank != sinfo->bl_power)
-+ power = bl->props.fb_blank;
-+ else if (bl->props.power != sinfo->bl_power)
-+ power = bl->props.power;
++ if (host_ui->xattr_names + host_ui->xattr_cnt +
++ nm->len + 1 > XATTR_LIST_MAX)
++ return -ENOSPC;
++
++ err = ubifs_budget_inode_op(c, host, &req);
++ if (err)
++ return err;
++
++ inode = ubifs_new_inode(c, host, S_IFREG | S_IRWXUGO);
++ if (IS_ERR(inode)) {
++ err = PTR_ERR(inode);
++ goto out_budg;
++ }
++
++ /* Re-define all operations to be "nothing" */
++ inode->i_mapping->a_ops = &none_address_operations;
++ inode->i_op = &none_inode_operations;
++ inode->i_fop = &none_file_operations;
++
++ inode->i_flags |= S_SYNC | S_NOATIME | S_NOCMTIME | S_NOQUOTA;
++ ui = ubifs_inode(inode);
++ ui->xattr = 1;
++ ui->data = kmalloc(size, GFP_NOFS);
++ if (!ui->data) {
++ err = -ENOMEM;
++ goto out_inode;
++ }
+
-+ if (brightness < 0 && power == FB_BLANK_UNBLANK)
-+ brightness = lcdc_readl(sinfo, ATMEL_LCDC_CONTRAST_VAL);
-+ else if (power != FB_BLANK_UNBLANK)
-+ brightness = 0;
++ memcpy(ui->data, value, size);
++ host->i_ctime = ubifs_current_time(host);
++ host_ui->xattr_cnt += 1;
++ spin_lock(&host->i_lock);
++ host_ui->xattr_size += CALC_DENT_SIZE(nm->len);
++ host_ui->xattr_size += CALC_XATTR_BYTES(size);
++ spin_unlock(&host->i_lock);
++ host_ui->xattr_names += nm->len;
+
-+ lcdc_writel(sinfo, ATMEL_LCDC_CONTRAST_VAL, brightness);
-+ lcdc_writel(sinfo, ATMEL_LCDC_CONTRAST_CTR,
-+ brightness ? contrast_ctr : 0);
++ /*
++ * We do not use i_size_write() because nobody can race with us as we
++ * are holding host @host->i_mutex - every xattr operation for this
++ * inode is serialized by it.
++ */
++ inode->i_size = size;
++ ui->data_len = size;
+
-+ bl->props.fb_blank = bl->props.power = sinfo->bl_power = power;
++ /*
++ * Note, it is important that 'ubifs_jnl_update()' writes the @host
++ * inode last, so when it gets synchronized and the write-buffer is
++ * flushed, the extended attribute is flushed as well.
++ */
++ err = ubifs_jnl_update(c, host, nm, inode, 0, IS_DIRSYNC(host), 1);
++ if (err)
++ goto out_cancel;
+
++ ubifs_release_ino_clean(c, host, &req);
++ insert_inode_hash(inode);
++ iput(inode);
+ return 0;
++
++out_cancel:
++ host_ui->xattr_cnt -= 1;
++ spin_lock(&host->i_lock);
++ host_ui->xattr_size -= CALC_DENT_SIZE(nm->len);
++ host_ui->xattr_size -= CALC_XATTR_BYTES(size);
++ spin_unlock(&host->i_lock);
++out_inode:
++ make_bad_inode(inode);
++ iput(inode);
++out_budg:
++ ubifs_cancel_ino_op(c, host, &req);
++ return err;
+}
+
-+static int atmel_bl_get_brightness(struct backlight_device *bl)
++/**
++ * change_xattr - change an extended attribute.
++ * @c: UBIFS file-system description object
++ * @host: host inode
++ * @inode: extended attribute inode
++ * @value: extended attribute value
++ * @size: size of extended attribute value
++ *
++ * This helper function changes the value of extended attribute @inode with new
++ * data from @value. Returns zero in case of success and a negative error code
++ * in case of failure.
++ */
++static int change_xattr(struct ubifs_info *c, struct inode *host,
++ struct inode *inode, const void *value, int size)
+{
-+ struct atmel_lcdfb_info *sinfo = bl_get_data(bl);
++ struct ubifs_inode *host_ui = ubifs_inode(host);
++ struct ubifs_inode *ui = ubifs_inode(inode);
++ struct ubifs_budget_req req = { .dirtied_ino = 1,
++ .dirtied_ino_d = ui->data_len };
++ int err;
++
++ ubifs_assert(ui->data_len == inode->i_size);
++
++ err = ubifs_budget_inode_op(c, host, &req);
++ if (err)
++ return err;
++
++ host->i_ctime = ubifs_current_time(host);
++ spin_lock(&host->i_lock);
++ host_ui->xattr_size -= CALC_XATTR_BYTES(ui->data_len);
++ host_ui->xattr_size += CALC_XATTR_BYTES(size);
++ spin_unlock(&host->i_lock);
++
++ kfree(ui->data);
++ ui->data = kmalloc(size, GFP_NOFS);
++ if (!ui->data) {
++ err = -ENOMEM;
++ goto out_budg;
++ }
++
++ memcpy(ui->data, value, size);
++ inode->i_size = size;
++ ui->data_len = size;
++
++ /*
++ * It is important to write the host inode after the xattr inode
++ * because if the host inode gets synchronized, then the extended
++ * attribute inode gets synchronized, because it goes before the host
++ * inode in the write-buffer.
++ */
++ err = ubifs_jnl_write_2_inodes(c, inode, host, IS_DIRSYNC(host));
++ if (err)
++ goto out_cancel;
++
++ ubifs_release_ino_clean(c, host, &req);
++ return 0;
+
-+ return lcdc_readl(sinfo, ATMEL_LCDC_CONTRAST_VAL);
++out_cancel:
++ spin_lock(&host->i_lock);
++ host_ui->xattr_size -= CALC_XATTR_BYTES(size);
++ host_ui->xattr_size += CALC_XATTR_BYTES(ui->data_len);
++ spin_unlock(&host->i_lock);
++ make_bad_inode(inode);
++out_budg:
++ ubifs_cancel_ino_op(c, host, &req);
++ return err;
+}
+
-+static struct backlight_ops atmel_lcdc_bl_ops = {
-+ .update_status = atmel_bl_update_status,
-+ .get_brightness = atmel_bl_get_brightness,
-+};
++/**
++ * check_namespace - check extended attribute name-space.
++ * @nm: extended attribute name
++ *
++ * This function makes sure the extended attribute name belongs to one of the
++ * supported extended attribute name-spaces. Returns name-space index in case
++ * of success and a negative error code in case of failure.
++ */
++static int check_namespace(const struct qstr *nm)
++{
++ int type;
++
++ if (nm->len > UBIFS_MAX_NLEN)
++ return -ENAMETOOLONG;
++
++ if (!strncmp(nm->name, XATTR_TRUSTED_PREFIX,
++ XATTR_TRUSTED_PREFIX_LEN)) {
++ if (nm->name[sizeof(XATTR_TRUSTED_PREFIX) - 1] == '\0')
++ return -EINVAL;
++ type = TRUSTED_XATTR;
++ } else if (!strncmp(nm->name, XATTR_USER_PREFIX,
++ XATTR_USER_PREFIX_LEN)) {
++ if (nm->name[XATTR_USER_PREFIX_LEN] == '\0')
++ return -EINVAL;
++ type = USER_XATTR;
++ } else if (!strncmp(nm->name, XATTR_SECURITY_PREFIX,
++ XATTR_SECURITY_PREFIX_LEN)) {
++ if (nm->name[sizeof(XATTR_SECURITY_PREFIX) - 1] == '\0')
++ return -EINVAL;
++ type = SECURITY_XATTR;
++ } else
++ return -EOPNOTSUPP;
++
++ return type;
++}
+
-+static void init_backlight(struct atmel_lcdfb_info *sinfo)
++int ubifs_setxattr(struct dentry *dentry, const char *name,
++ const void *value, size_t size, int flags)
+{
-+ struct backlight_device *bl;
++ struct inode *inode, *host = dentry->d_inode;
++ struct ubifs_info *c = host->i_sb->s_fs_info;
++ struct qstr nm = { .name = name, .len = strlen(name) };
++ struct ubifs_dent_node *xent;
++ union ubifs_key key;
++ int err, type;
+
-+ sinfo->bl_power = FB_BLANK_UNBLANK;
++ dbg_gen("xattr '%s', host ino %lu ('%.*s'), size %zd", name,
++ host->i_ino, dentry->d_name.len, dentry->d_name.name, size);
++ ubifs_assert(ubifs_inode(host)->xattr_cnt >= 0);
++ ubifs_assert(ubifs_inode(host)->xattr_size >= 0);
++ ubifs_assert(ubifs_inode(host)->xattr_names >= 0);
+
-+ if (sinfo->backlight)
-+ return;
++ if (size > UBIFS_MAX_INO_DATA)
++ return -ERANGE;
+
-+ bl = backlight_device_register("backlight", &sinfo->pdev->dev,
-+ sinfo, &atmel_lcdc_bl_ops);
-+ if (IS_ERR(sinfo->backlight)) {
-+ dev_err(&sinfo->pdev->dev, "error %ld on backlight register\n",
-+ PTR_ERR(bl));
-+ return;
++ type = check_namespace(&nm);
++ if (type < 0)
++ return type;
++
++ xent = kmalloc(UBIFS_MAX_XENT_NODE_SZ, GFP_NOFS);
++ if (!xent)
++ return -ENOMEM;
++
++ /*
++ * The extended attribute entries are stored in LNC, so multiple
++ * look-ups do not involve reading the flash.
++ */
++ xent_key_init(c, &key, host->i_ino, &nm);
++ err = ubifs_tnc_lookup_nm(c, &key, xent, &nm);
++ if (err) {
++ if (err != -ENOENT)
++ goto out_free;
++
++ if (flags & XATTR_REPLACE)
++ /* We are asked not to create the xattr */
++ err = -ENODATA;
++ else
++ err = create_xattr(c, host, &nm, value, size);
++ goto out_free;
++ }
++
++ if (flags & XATTR_CREATE) {
++ /* We are asked not to replace the xattr */
++ err = -EEXIST;
++ goto out_free;
++ }
++
++ inode = ubifs_iget(c->vfs_sb, le64_to_cpu(xent->inum));
++ if (IS_ERR(inode)) {
++ ubifs_err("dead extended attribute entry, error %d", err);
++ ubifs_ro_mode(c, err);
++ err = PTR_ERR(inode);
++ goto out_free;
++ }
++
++ err = change_xattr(c, host, inode, value, size);
++ iput(inode);
++
++out_free:
++ kfree(xent);
++ return err;
++}
++
++ssize_t ubifs_getxattr(struct dentry *dentry, const char *name, void *buf,
++ size_t size)
++{
++ struct inode *inode, *host = dentry->d_inode;
++ struct ubifs_info *c = host->i_sb->s_fs_info;
++ struct qstr nm = { .name = name, .len = strlen(name) };
++ struct ubifs_inode *ui;
++ struct ubifs_dent_node *xent;
++ union ubifs_key key;
++ int err;
++
++ dbg_gen("xattr '%s', ino %lu ('%.*s'), buf size %zd", name,
++ host->i_ino, dentry->d_name.len, dentry->d_name.name, size);
++ ubifs_assert(ubifs_inode(host)->xattr_cnt >= 0);
++ ubifs_assert(ubifs_inode(host)->xattr_size >= 0);
++ ubifs_assert(ubifs_inode(host)->xattr_names >= 0);
++
++ err = check_namespace(&nm);
++ if (err < 0)
++ return err;
++
++ xent = kmalloc(UBIFS_MAX_XENT_NODE_SZ, GFP_NOFS);
++ if (!xent)
++ return -ENOMEM;
++
++ mutex_lock(&host->i_mutex);
++ xent_key_init(c, &key, host->i_ino, &nm);
++ err = ubifs_tnc_lookup_nm(c, &key, xent, &nm);
++ if (err) {
++ if (err == -ENOENT)
++ err = -ENODATA;
++ goto out_unlock;
++ }
++
++ inode = ubifs_iget(c->vfs_sb, le64_to_cpu(xent->inum));
++ if (IS_ERR(inode)) {
++ ubifs_err("dead extended attribute entry, error %d", err);
++ ubifs_ro_mode(c, err);
++ err = PTR_ERR(inode);
++ goto out_unlock;
++ }
++
++ ui = ubifs_inode(inode);
++ ubifs_assert(inode->i_size == ui->data_len);
++ ubifs_assert(ubifs_inode(host)->xattr_size > ui->data_len);
++
++ if (buf) {
++ /* If @buf is %NULL we are supposed to return the length */
++ if (ui->data_len > size) {
++ dbg_err("buffer size %zd, xattr len %d",
++ size, ui->data_len);
++ err = -ERANGE;
++ goto out_iput;
++ }
++
++ memcpy(buf, ui->data, ui->data_len);
++ }
++ err = ui->data_len;
++
++out_iput:
++ iput(inode);
++out_unlock:
++ mutex_unlock(&host->i_mutex);
++ kfree(xent);
++ return err;
++}
++
++ssize_t ubifs_listxattr(struct dentry *dentry, char *buffer, size_t size)
++{
++ struct inode *host = dentry->d_inode;
++ struct ubifs_info *c = host->i_sb->s_fs_info;
++ struct ubifs_inode *host_ui = ubifs_inode(host);
++ union ubifs_key key;
++ struct ubifs_dent_node *xent, *pxent = NULL;
++ int err, len, written = 0;
++ struct qstr nm = { .name = NULL };
++
++ dbg_gen("ino %lu ('%.*s'), buffer size %zd", host->i_ino,
++ dentry->d_name.len, dentry->d_name.name, size);
++ ubifs_assert(host_ui->xattr_cnt >= 0);
++ ubifs_assert(host_ui->xattr_size >= 0);
++ ubifs_assert(host_ui->xattr_names >= 0);
++
++ len = host_ui->xattr_names + host_ui->xattr_cnt;
++ if (!buffer)
++ /*
++ * We should return the minimum buffer size which will fit a
++ * null-terminated list of all the extended attribute names.
++ */
++ return len;
++
++ if (len > size)
++ return -ERANGE;
++
++ lowest_xent_key(c, &key, host->i_ino);
++
++ mutex_lock(&host->i_mutex);
++ while (1) {
++ int type;
++
++ xent = ubifs_tnc_next_ent(c, &key, &nm);
++ if (unlikely(IS_ERR(xent))) {
++ err = PTR_ERR(xent);
++ break;
++ }
++
++ nm.name = xent->name;
++ nm.len = le16_to_cpu(xent->nlen);
++
++ type = check_namespace(&nm);
++ if (unlikely(type < 0)) {
++ err = type;
++ break;
++ }
++
++ /* Show trusted namespace only for "power" users */
++ if (type != TRUSTED_XATTR || capable(CAP_SYS_ADMIN)) {
++ memcpy(buffer + written, nm.name, nm.len + 1);
++ written += nm.len + 1;
++ }
++
++ kfree(pxent);
++ pxent = xent;
++ key_read(c, &xent->key, &key);
++ }
++ mutex_unlock(&host->i_mutex);
++
++ kfree(pxent);
++ if (err != -ENOENT) {
++ ubifs_err("cannot find next direntry, error %d", err);
++ return err;
+ }
-+ sinfo->backlight = bl;
+
-+ bl->props.power = FB_BLANK_UNBLANK;
-+ bl->props.fb_blank = FB_BLANK_UNBLANK;
-+ bl->props.max_brightness = 0xff;
-+ bl->props.brightness = atmel_bl_get_brightness(bl);
-+}
++ ubifs_assert(written <= size);
++ return written;
++}
++
++static int remove_xattr(struct ubifs_info *c, struct inode *host,
++ struct inode *inode, const struct qstr *nm)
++{
++ struct ubifs_inode *host_ui = ubifs_inode(host);
++ struct ubifs_inode *ui = ubifs_inode(inode);
++ struct ubifs_budget_req req = { .dirtied_ino = 1, .mod_dent = 1 };
++ int err;
++
++ ubifs_assert(ui->data_len == inode->i_size);
++
++ err = ubifs_budget_inode_op(c, host, &req);
++ if (err)
++ return err;
++
++ host->i_ctime = ubifs_current_time(host);
++ host_ui->xattr_cnt -= 1;
++ spin_lock(&host->i_lock);
++ host_ui->xattr_size -= CALC_DENT_SIZE(nm->len);
++ host_ui->xattr_size -= CALC_XATTR_BYTES(ui->data_len);
++ spin_unlock(&host->i_lock);
++ host_ui->xattr_names -= nm->len;
+
-+static void exit_backlight(struct atmel_lcdfb_info *sinfo)
-+{
-+ if (sinfo->backlight)
-+ backlight_device_unregister(sinfo->backlight);
-+}
++ err = ubifs_jnl_delete_xattr(c, host, inode, nm, IS_DIRSYNC(host));
++ if (err)
++ goto out_cancel;
+
-+#else
++ ubifs_release_ino_clean(c, host, &req);
++ return 0;
+
-+static void init_backlight(struct atmel_lcdfb_info *sinfo)
-+{
-+ dev_warn(&sinfo->pdev->dev, "backlight control is not available\n");
++out_cancel:
++ ubifs_cancel_ino_op(c, host, &req);
++ host_ui->xattr_cnt += 1;
++ spin_lock(&host->i_lock);
++ host_ui->xattr_size += CALC_DENT_SIZE(nm->len);
++ host_ui->xattr_size += CALC_XATTR_BYTES(ui->data_len);
++ spin_unlock(&host->i_lock);
++ make_bad_inode(inode);
++ return err;
+}
+
-+static void exit_backlight(struct atmel_lcdfb_info *sinfo)
++int ubifs_removexattr(struct dentry *dentry, const char *name)
+{
-+}
++ struct inode *inode, *host = dentry->d_inode;
++ struct ubifs_info *c = host->i_sb->s_fs_info;
++ struct qstr nm = { .name = name, .len = strlen(name) };
++ struct ubifs_dent_node *xent;
++ union ubifs_key key;
++ int err;
+
-+#endif
++ dbg_gen("xattr '%s', ino %lu ('%.*s')", name,
++ host->i_ino, dentry->d_name.len, dentry->d_name.name);
++ ubifs_assert(mutex_is_locked(&host->i_mutex));
++ ubifs_assert(ubifs_inode(host)->xattr_cnt >= 0);
++ ubifs_assert(ubifs_inode(host)->xattr_size >= 0);
++ ubifs_assert(ubifs_inode(host)->xattr_names >= 0);
+
-+static void init_contrast(struct atmel_lcdfb_info *sinfo)
-+{
-+ /* have some default contrast/backlight settings */
-+ lcdc_writel(sinfo, ATMEL_LCDC_CONTRAST_CTR, contrast_ctr);
-+ lcdc_writel(sinfo, ATMEL_LCDC_CONTRAST_VAL, ATMEL_LCDC_CVAL_DEFAULT);
++ err = check_namespace(&nm);
++ if (err < 0)
++ return err;
+
-+ if (sinfo->lcdcon_is_backlight)
-+ init_backlight(sinfo);
-+}
++ xent = kmalloc(UBIFS_MAX_XENT_NODE_SZ, GFP_NOFS);
++ if (!xent)
++ return -ENOMEM;
+
-
- static struct fb_fix_screeninfo atmel_lcdfb_fix __initdata = {
- .type = FB_TYPE_PACKED_PIXELS,
- .visual = FB_VISUAL_TRUECOLOR,
- .xpanstep = 0,
-- .ypanstep = 0,
-+ .ypanstep = 1,
- .ywrapstep = 0,
- .accel = FB_ACCEL_NONE,
- };
-@@ -148,6 +252,8 @@
- return -ENOMEM;
- }
-
-+ memset(info->screen_base, 0, info->fix.smem_len);
++ xent_key_init(c, &key, host->i_ino, &nm);
++ err = ubifs_tnc_lookup_nm(c, &key, xent, &nm);
++ if (err) {
++ if (err == -ENOENT)
++ err = -ENODATA;
++ goto out_free;
++ }
+
- return 0;
- }
-
-@@ -203,6 +309,26 @@
- var->transp.offset = var->transp.length = 0;
- var->xoffset = var->yoffset = 0;
-
-+ /* Saturate vertical and horizontal timings at maximum values */
-+ var->vsync_len = min_t(u32, var->vsync_len,
-+ (ATMEL_LCDC_VPW >> ATMEL_LCDC_VPW_OFFSET) + 1);
-+ var->upper_margin = min_t(u32, var->upper_margin,
-+ ATMEL_LCDC_VBP >> ATMEL_LCDC_VBP_OFFSET);
-+ var->lower_margin = min_t(u32, var->lower_margin,
-+ ATMEL_LCDC_VFP);
-+ var->right_margin = min_t(u32, var->right_margin,
-+ (ATMEL_LCDC_HFP >> ATMEL_LCDC_HFP_OFFSET) + 1);
-+ var->hsync_len = min_t(u32, var->hsync_len,
-+ (ATMEL_LCDC_HPW >> ATMEL_LCDC_HPW_OFFSET) + 1);
-+ var->left_margin = min_t(u32, var->left_margin,
-+ ATMEL_LCDC_HBP + 1);
-+
-+ /* Some parameters can't be zero */
-+ var->vsync_len = max_t(u32, var->vsync_len, 1);
-+ var->right_margin = max_t(u32, var->right_margin, 1);
-+ var->hsync_len = max_t(u32, var->hsync_len, 1);
-+ var->left_margin = max_t(u32, var->left_margin, 1);
-+
- switch (var->bits_per_pixel) {
- case 1:
- case 2:
-@@ -370,10 +496,6 @@
- /* Disable all interrupts */
- lcdc_writel(sinfo, ATMEL_LCDC_IDR, ~0UL);
-
-- /* Set contrast */
-- value = ATMEL_LCDC_PS_DIV8 | ATMEL_LCDC_POL_POSITIVE | ATMEL_LCDC_ENA_PWMENABLE;
-- lcdc_writel(sinfo, ATMEL_LCDC_CONTRAST_CTR, value);
-- lcdc_writel(sinfo, ATMEL_LCDC_CONTRAST_VAL, ATMEL_LCDC_CVAL_DEFAULT);
- /* ...wait for DMA engine to become idle... */
- while (lcdc_readl(sinfo, ATMEL_LCDC_DMACON) & ATMEL_LCDC_DMABUSY)
- msleep(10);
-@@ -516,7 +638,6 @@
- struct fb_info *info = sinfo->info;
- int ret = 0;
-
-- memset_io(info->screen_base, 0, info->fix.smem_len);
- info->var.activate |= FB_ACTIVATE_FORCE | FB_ACTIVATE_NOW;
-
- dev_info(info->device,
-@@ -577,6 +698,7 @@
- sinfo->default_monspecs = pdata_sinfo->default_monspecs;
- sinfo->atmel_lcdfb_power_control = pdata_sinfo->atmel_lcdfb_power_control;
- sinfo->guard_time = pdata_sinfo->guard_time;
-+ sinfo->lcdcon_is_backlight = pdata_sinfo->lcdcon_is_backlight;
- } else {
- dev_err(dev, "cannot get default configuration\n");
- goto free_info;
-@@ -645,6 +767,11 @@
- info->screen_base = ioremap(info->fix.smem_start, info->fix.smem_len);
- if (!info->screen_base)
- goto release_intmem;
++ inode = ubifs_iget(c->vfs_sb, le64_to_cpu(xent->inum));
++ if (IS_ERR(inode)) {
++ ubifs_err("dead extended attribute node entry");
++ ubifs_ro_mode(c, err);
++ err = PTR_ERR(inode);
++ goto out_free;
++ }
+
-+ /*
-+ * Don't clear the framebuffer -- someone may have set
-+ * up a splash image.
-+ */
- } else {
- /* alocate memory buffer */
- ret = atmel_lcdfb_alloc_video_memory(sinfo);
-@@ -670,6 +797,9 @@
- goto release_mem;
- }
-
-+ /* Initialize PWM for contrast or backlight ("off") */
-+ init_contrast(sinfo);
-+
- /* interrupt */
- ret = request_irq(sinfo->irq_base, atmel_lcdfb_interrupt, 0, pdev->name, info);
- if (ret) {
-@@ -721,6 +851,7 @@
- unregister_irqs:
- free_irq(sinfo->irq_base, info);
- unmap_mmio:
-+ exit_backlight(sinfo);
- iounmap(sinfo->mmio);
- release_mem:
- release_mem_region(info->fix.mmio_start, info->fix.mmio_len);
-@@ -755,6 +886,7 @@
- if (!sinfo)
- return 0;
-
-+ exit_backlight(sinfo);
- if (sinfo->atmel_lcdfb_power_control)
- sinfo->atmel_lcdfb_power_control(0);
- unregister_framebuffer(info);
-@@ -781,6 +913,9 @@
-
- static struct platform_driver atmel_lcdfb_driver = {
- .remove = __exit_p(atmel_lcdfb_remove),
++ ubifs_assert(inode->i_nlink == 1);
++ inode->i_nlink = 0;
++ err = remove_xattr(c, host, inode, &nm);
++ if (err)
++ inode->i_nlink = 1;
+
-+// FIXME need suspend, resume
++ /* If @i_nlink is 0, 'iput()' will delete the inode */
++ iput(inode);
+
- .driver = {
- .name = "atmel_lcdfb",
- .owner = THIS_MODULE,
---- a/drivers/video/backlight/Kconfig
-+++ b/drivers/video/backlight/Kconfig
-@@ -50,6 +50,19 @@
- To have support for your specific LCD panel you will have to
- select the proper drivers which depend on this option.
-
-+config BACKLIGHT_ATMEL_LCDC
-+ bool "Atmel LCDC Contrast-as-Backlight control"
-+ depends on BACKLIGHT_CLASS_DEVICE && FB_ATMEL
-+ default y if MACH_SAM9261EK || MACH_SAM9263EK
-+ help
-+ This provides a backlight control internal to the Atmel LCDC
-+ driver. If the LCD "contrast control" on your board is wired
-+ so it controls the backlight brightness, select this option to
-+ export this as a PWM-based backlight control.
-+
-+ If in doubt, it's safe to enable this option; it doesn't kick
-+ in unless the board's description says it's wired that way.
-+
- config BACKLIGHT_CORGI
- tristate "Generic (aka Sharp Corgi) Backlight Driver"
- depends on BACKLIGHT_CLASS_DEVICE
---- a/drivers/video/console/Kconfig
-+++ b/drivers/video/console/Kconfig
-@@ -6,7 +6,7 @@
-
- config VGA_CONSOLE
- bool "VGA text console" if EMBEDDED || !X86
-- depends on !ARCH_ACORN && !ARCH_EBSA110 && !4xx && !8xx && !SPARC && !M68K && !PARISC && !FRV && !ARCH_VERSATILE && !SUPERH && !BLACKFIN
-+ depends on !ARCH_ACORN && !ARCH_EBSA110 && !4xx && !8xx && !SPARC && !M68K && !PARISC && !FRV && !ARCH_VERSATILE && !SUPERH && !BLACKFIN && !AVR32
- default y
- help
- Saying Y here will allow you to use Linux in text mode through a
---- a/drivers/watchdog/Kconfig
-+++ b/drivers/watchdog/Kconfig
-@@ -223,7 +223,7 @@
-
- config AT32AP700X_WDT
- tristate "AT32AP700x watchdog"
-- depends on CPU_AT32AP7000
-+ depends on CPU_AT32AP700X
- help
- Watchdog timer embedded into AT32AP700x devices. This will reboot
- your system when the timeout is reached.
---- a/include/asm-avr32/arch-at32ap/at32ap7000.h
-+++ /dev/null
-@@ -1,35 +0,0 @@
++out_free:
++ kfree(xent);
++ return err;
++}
+diff --exclude=.git -urN linux-2.6.25.6/include/asm-arm/arch-at91/at91_ecc.h avr32-2.6/include/asm-arm/arch-at91/at91_ecc.h
+--- linux-2.6.25.6/include/asm-arm/arch-at91/at91_ecc.h 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/include/asm-arm/arch-at91/at91_ecc.h 1970-01-01 01:00:00.000000000 +0100
+@@ -1,38 +0,0 @@
-/*
-- * Pin definitions for AT32AP7000.
+- * include/asm-arm/arch-at91/at91_ecc.h
- *
-- * Copyright (C) 2006 Atmel Corporation
+- * Error Corrected Code Controller (ECC) - System peripherals regsters.
+- * Based on AT91SAM9260 datasheet revision B.
- *
-- * This program is free software; you can redistribute it and/or modify
-- * it under the terms of the GNU General Public License version 2 as
-- * published by the Free Software Foundation.
+- * This program is free software; you can redistribute it and/or modify it
+- * under the terms of the GNU General Public License as published by the
+- * Free Software Foundation; either version 2 of the License, or (at your
+- * option) any later version.
- */
--#ifndef __ASM_ARCH_AT32AP7000_H__
--#define __ASM_ARCH_AT32AP7000_H__
-
--#define GPIO_PERIPH_A 0
--#define GPIO_PERIPH_B 1
+-#ifndef AT91_ECC_H
+-#define AT91_ECC_H
-
--#define NR_GPIO_CONTROLLERS 4
+-#define AT91_ECC_CR (AT91_ECC + 0x00) /* Control register */
+-#define AT91_ECC_RST (1 << 0) /* Reset parity */
-
--/*
-- * Pin numbers identifying specific GPIO pins on the chip. They can
-- * also be converted to IRQ numbers by passing them through
-- * gpio_to_irq().
-- */
--#define GPIO_PIOA_BASE (0)
--#define GPIO_PIOB_BASE (GPIO_PIOA_BASE + 32)
--#define GPIO_PIOC_BASE (GPIO_PIOB_BASE + 32)
--#define GPIO_PIOD_BASE (GPIO_PIOC_BASE + 32)
--#define GPIO_PIOE_BASE (GPIO_PIOD_BASE + 32)
+-#define AT91_ECC_MR (AT91_ECC + 0x04) /* Mode register */
+-#define AT91_ECC_PAGESIZE (3 << 0) /* Page Size */
+-#define AT91_ECC_PAGESIZE_528 (0)
+-#define AT91_ECC_PAGESIZE_1056 (1)
+-#define AT91_ECC_PAGESIZE_2112 (2)
+-#define AT91_ECC_PAGESIZE_4224 (3)
+-
+-#define AT91_ECC_SR (AT91_ECC + 0x08) /* Status register */
+-#define AT91_ECC_RECERR (1 << 0) /* Recoverable Error */
+-#define AT91_ECC_ECCERR (1 << 1) /* ECC Single Bit Error */
+-#define AT91_ECC_MULERR (1 << 2) /* Multiple Errors */
+-
+-#define AT91_ECC_PR (AT91_ECC + 0x0c) /* Parity register */
+-#define AT91_ECC_BITADDR (0xf << 0) /* Bit Error Address */
+-#define AT91_ECC_WORDADDR (0xfff << 4) /* Word Error Address */
-
--#define GPIO_PIN_PA(N) (GPIO_PIOA_BASE + (N))
--#define GPIO_PIN_PB(N) (GPIO_PIOB_BASE + (N))
--#define GPIO_PIN_PC(N) (GPIO_PIOC_BASE + (N))
--#define GPIO_PIN_PD(N) (GPIO_PIOD_BASE + (N))
--#define GPIO_PIN_PE(N) (GPIO_PIOE_BASE + (N))
+-#define AT91_ECC_NPR (AT91_ECC + 0x10) /* NParity register */
+-#define AT91_ECC_NPARITY (0xffff << 0) /* NParity */
-
--#endif /* __ASM_ARCH_AT32AP7000_H__ */
---- /dev/null
-+++ b/include/asm-avr32/arch-at32ap/at32ap700x.h
-@@ -0,0 +1,35 @@
+-#endif
+diff --exclude=.git -urN linux-2.6.25.6/include/asm-arm/arch-at91/board.h avr32-2.6/include/asm-arm/arch-at91/board.h
+--- linux-2.6.25.6/include/asm-arm/arch-at91/board.h 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/include/asm-arm/arch-at91/board.h 2008-06-12 15:09:45.803815435 +0200
+@@ -85,7 +85,7 @@
+ extern void __init at91_add_device_usbh(struct at91_usbh_data *data);
+
+ /* NAND / SmartMedia */
+-struct at91_nand_data {
++struct atmel_nand_data {
+ u8 enable_pin; /* chip enable */
+ u8 det_pin; /* card detect */
+ u8 rdy_pin; /* ready/busy */
+@@ -94,7 +94,7 @@
+ u8 bus_width_16; /* buswidth is 16 bit */
+ struct mtd_partition* (*partition_info)(int, int*);
+ };
+-extern void __init at91_add_device_nand(struct at91_nand_data *data);
++extern void __init at91_add_device_nand(struct atmel_nand_data *data);
+
+ /* I2C*/
+ extern void __init at91_add_device_i2c(struct i2c_board_info *devices, int nr_devices);
+diff --exclude=.git -urN linux-2.6.25.6/include/asm-avr32/arch-at32ap/board.h avr32-2.6/include/asm-avr32/arch-at32ap/board.h
+--- linux-2.6.25.6/include/asm-avr32/arch-at32ap/board.h 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/include/asm-avr32/arch-at32ap/board.h 2008-06-12 15:09:45.855816193 +0200
+@@ -8,6 +8,12 @@
+
+ #define GPIO_PIN_NONE (-1)
+
+/*
-+ * Pin definitions for AT32AP7000.
-+ *
-+ * Copyright (C) 2006 Atmel Corporation
-+ *
-+ * This program is free software; you can redistribute it and/or modify
-+ * it under the terms of the GNU General Public License version 2 as
-+ * published by the Free Software Foundation.
++ * Clock rates for various on-board oscillators. The number of entries
++ * in this array is chip-dependent.
+ */
-+#ifndef __ASM_ARCH_AT32AP700X_H__
-+#define __ASM_ARCH_AT32AP700X_H__
-+
-+#define GPIO_PERIPH_A 0
-+#define GPIO_PERIPH_B 1
-+
-+#define NR_GPIO_CONTROLLERS 4
-+
-+/*
-+ * Pin numbers identifying specific GPIO pins on the chip. They can
-+ * also be converted to IRQ numbers by passing them through
-+ * gpio_to_irq().
-+ */
-+#define GPIO_PIOA_BASE (0)
-+#define GPIO_PIOB_BASE (GPIO_PIOA_BASE + 32)
-+#define GPIO_PIOC_BASE (GPIO_PIOB_BASE + 32)
-+#define GPIO_PIOD_BASE (GPIO_PIOC_BASE + 32)
-+#define GPIO_PIOE_BASE (GPIO_PIOD_BASE + 32)
-+
-+#define GPIO_PIN_PA(N) (GPIO_PIOA_BASE + (N))
-+#define GPIO_PIN_PB(N) (GPIO_PIOB_BASE + (N))
-+#define GPIO_PIN_PC(N) (GPIO_PIOC_BASE + (N))
-+#define GPIO_PIN_PD(N) (GPIO_PIOD_BASE + (N))
-+#define GPIO_PIN_PE(N) (GPIO_PIOE_BASE + (N))
-+
-+#endif /* __ASM_ARCH_AT32AP700X_H__ */
---- a/include/asm-avr32/arch-at32ap/board.h
-+++ b/include/asm-avr32/arch-at32ap/board.h
-@@ -38,9 +38,7 @@
++extern unsigned long at32_board_osc_rates[];
++
+ /* Add basic devices: system manager, interrupt controller, portmuxes, etc. */
+ void at32_add_system_devices(void);
+
+@@ -36,11 +42,10 @@
+ struct atmel_lcdfb_info;
+ struct platform_device *
at32_add_device_lcdc(unsigned int id, struct atmel_lcdfb_info *data,
- unsigned long fbmem_start, unsigned long fbmem_len);
+- unsigned long fbmem_start, unsigned long fbmem_len);
++ unsigned long fbmem_start, unsigned long fbmem_len,
++ unsigned int pin_config);
-struct usba_platform_data {
- int vbus_pin;
struct platform_device *
at32_add_device_usba(unsigned int id, struct usba_platform_data *data);
-@@ -51,6 +49,9 @@
- at32_add_device_ide(unsigned int id, unsigned int extint,
- struct ide_platform_data *data);
-
-+/* mask says which PWM channels to mux */
-+struct platform_device *at32_add_device_pwm(u32 mask);
-+
- /* depending on what's hooked up, not all SSC pins will be used */
- #define ATMEL_SSC_TK 0x01
- #define ATMEL_SSC_TF 0x02
-@@ -65,8 +66,17 @@
+@@ -68,8 +73,17 @@
struct platform_device *
at32_add_device_ssc(unsigned int id, unsigned int flags);
-struct platform_device *at32_add_device_mci(unsigned int id);
+struct i2c_board_info;
+struct platform_device *at32_add_device_twi(unsigned int id,
-+ struct i2c_board_info *b,
-+ unsigned int n);
++ struct i2c_board_info *b,
++ unsigned int n);
+
+struct mci_platform_data {
+ int detect_pin;
struct platform_device *at32_add_device_ac97c(unsigned int id);
struct platform_device *at32_add_device_abdac(unsigned int id);
-@@ -81,4 +91,7 @@
+@@ -84,4 +98,20 @@
at32_add_device_cf(unsigned int id, unsigned int extint,
struct cf_platform_data *data);
+struct platform_device *
+at32_add_device_psif(unsigned int id);
++
++/* NAND / SmartMedia */
++struct atmel_nand_data {
++ int enable_pin; /* chip enable */
++ int det_pin; /* card detect */
++ int rdy_pin; /* ready/busy */
++ u8 ale; /* address line number connected to ALE */
++ u8 cle; /* address line number connected to CLE */
++ u8 bus_width_16; /* buswidth is 16 bit */
++ struct mtd_partition *(*partition_info)(int size, int *num_partitions);
++};
++struct platform_device *
++at32_add_device_nand(unsigned int id, struct atmel_nand_data *data);
+
#endif /* __ASM_ARCH_BOARD_H */
---- a/include/asm-avr32/arch-at32ap/cpu.h
-+++ b/include/asm-avr32/arch-at32ap/cpu.h
-@@ -14,7 +14,7 @@
- * Only AT32AP7000 is defined for now. We can identify the specific
- * chip at runtime, but I'm not sure if it's really worth it.
- */
--#ifdef CONFIG_CPU_AT32AP7000
-+#ifdef CONFIG_CPU_AT32AP700X
- # define cpu_is_at32ap7000() (1)
- #else
- # define cpu_is_at32ap7000() (0)
---- a/include/asm-avr32/arch-at32ap/io.h
-+++ b/include/asm-avr32/arch-at32ap/io.h
-@@ -4,7 +4,7 @@
- /* For "bizarre" halfword swapping */
- #include <linux/byteorder/swabb.h>
-
--#if defined(CONFIG_AP7000_32_BIT_SMC)
-+#if defined(CONFIG_AP700X_32_BIT_SMC)
- # define __swizzle_addr_b(addr) (addr ^ 3UL)
- # define __swizzle_addr_w(addr) (addr ^ 2UL)
- # define __swizzle_addr_l(addr) (addr)
-@@ -14,7 +14,7 @@
- # define __mem_ioswabb(a, x) (x)
- # define __mem_ioswabw(a, x) swab16(x)
- # define __mem_ioswabl(a, x) swab32(x)
--#elif defined(CONFIG_AP7000_16_BIT_SMC)
-+#elif defined(CONFIG_AP700X_16_BIT_SMC)
- # define __swizzle_addr_b(addr) (addr ^ 1UL)
- # define __swizzle_addr_w(addr) (addr)
- # define __swizzle_addr_l(addr) (addr)
---- /dev/null
-+++ b/include/asm-avr32/arch-at32ap/pm.h
-@@ -0,0 +1,48 @@
+diff --exclude=.git -urN linux-2.6.25.6/include/asm-avr32/arch-at32ap/init.h avr32-2.6/include/asm-avr32/arch-at32ap/init.h
+--- linux-2.6.25.6/include/asm-avr32/arch-at32ap/init.h 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/include/asm-avr32/arch-at32ap/init.h 2008-06-12 15:09:45.855816193 +0200
+@@ -13,10 +13,6 @@
+ void setup_platform(void);
+ void setup_board(void);
+
+-/* Called by setup_platform */
+-void at32_clock_init(void);
+-void at32_portmux_init(void);
+-
+ void at32_setup_serial_console(unsigned int usart_id);
+
+ #endif /* __ASM_AVR32_AT32AP_INIT_H__ */
+diff --exclude=.git -urN linux-2.6.25.6/include/asm-avr32/arch-at32ap/pm.h avr32-2.6/include/asm-avr32/arch-at32ap/pm.h
+--- linux-2.6.25.6/include/asm-avr32/arch-at32ap/pm.h 1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/include/asm-avr32/arch-at32ap/pm.h 2008-06-12 15:09:45.855816193 +0200
+@@ -0,0 +1,51 @@
+/*
+ * AVR32 AP Power Management.
+ *
+
+#ifndef __ASSEMBLY__
+extern void cpu_enter_idle(void);
++extern void cpu_enter_standby(unsigned long sdramc_base);
+
+extern bool disable_idle_sleep;
+
+ else
+ cpu_enter_idle();
+}
++
++void intc_set_suspend_handler(unsigned long offset);
+#endif
+
+#endif /* __ASM_AVR32_ARCH_PM_H */
---- a/include/asm-avr32/arch-at32ap/portmux.h
-+++ b/include/asm-avr32/arch-at32ap/portmux.h
+diff --exclude=.git -urN linux-2.6.25.6/include/asm-avr32/arch-at32ap/portmux.h avr32-2.6/include/asm-avr32/arch-at32ap/portmux.h
+--- linux-2.6.25.6/include/asm-avr32/arch-at32ap/portmux.h 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/include/asm-avr32/arch-at32ap/portmux.h 2008-06-12 15:09:45.859816144 +0200
@@ -26,4 +26,16 @@
void at32_select_gpio(unsigned int pin, unsigned long flags);
void at32_reserve_pin(unsigned int pin);
+#endif /* CONFIG_GPIO_DEV */
+
#endif /* __ASM_ARCH_PORTMUX_H__ */
---- a/include/asm-avr32/arch-at32ap/time.h
-+++ /dev/null
+diff --exclude=.git -urN linux-2.6.25.6/include/asm-avr32/arch-at32ap/sram.h avr32-2.6/include/asm-avr32/arch-at32ap/sram.h
+--- linux-2.6.25.6/include/asm-avr32/arch-at32ap/sram.h 1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/include/asm-avr32/arch-at32ap/sram.h 2008-06-12 15:09:45.859816144 +0200
+@@ -0,0 +1,30 @@
++/*
++ * Simple SRAM allocator
++ *
++ * Copyright (C) 2008 Atmel Corporation
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 as
++ * published by the Free Software Foundation.
++ */
++#ifndef __ASM_AVR32_ARCH_SRAM_H
++#define __ASM_AVR32_ARCH_SRAM_H
++
++#include <linux/genalloc.h>
++
++extern struct gen_pool *sram_pool;
++
++static inline unsigned long sram_alloc(size_t len)
++{
++ if (!sram_pool)
++ return 0UL;
++
++ return gen_pool_alloc(sram_pool, len);
++}
++
++static inline void sram_free(unsigned long addr, size_t len)
++{
++ return gen_pool_free(sram_pool, addr, len);
++}
++
++#endif /* __ASM_AVR32_ARCH_SRAM_H */
+diff --exclude=.git -urN linux-2.6.25.6/include/asm-avr32/arch-at32ap/time.h avr32-2.6/include/asm-avr32/arch-at32ap/time.h
+--- linux-2.6.25.6/include/asm-avr32/arch-at32ap/time.h 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/include/asm-avr32/arch-at32ap/time.h 1970-01-01 01:00:00.000000000 +0100
@@ -1,112 +0,0 @@
-/*
- * Copyright (C) 2007 Atmel Corporation
- __raw_writel((value), port + (0x40 * instance) + TIMER_##reg)
-
-#endif /* _ASM_AVR32_ARCH_AT32AP_TIME_H */
---- a/include/asm-avr32/asm.h
-+++ b/include/asm-avr32/asm.h
+diff --exclude=.git -urN linux-2.6.25.6/include/asm-avr32/asm.h avr32-2.6/include/asm-avr32/asm.h
+--- linux-2.6.25.6/include/asm-avr32/asm.h 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/include/asm-avr32/asm.h 2008-06-12 15:04:04.683816631 +0200
@@ -12,10 +12,10 @@
#include <asm/asm-offsets.h>
#include <asm/thread_info.h>
#ifdef CONFIG_FRAME_POINTER
.macro save_fp
---- a/include/asm-avr32/byteorder.h
-+++ b/include/asm-avr32/byteorder.h
-@@ -12,8 +12,10 @@
- extern unsigned short __builtin_bswap_16(unsigned short x);
- #endif
-
-+#if 0
- #define __arch__swab32(x) __builtin_bswap_32(x)
- #define __arch__swab16(x) __builtin_bswap_16(x)
-+#endif
-
- #if !defined(__STRICT_ANSI__) || defined(__KERNEL__)
- # define __BYTEORDER_HAS_U64__
---- /dev/null
-+++ b/include/asm-avr32/dma-controller.h
+diff --exclude=.git -urN linux-2.6.25.6/include/asm-avr32/dma-controller.h avr32-2.6/include/asm-avr32/dma-controller.h
+--- linux-2.6.25.6/include/asm-avr32/dma-controller.h 1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/include/asm-avr32/dma-controller.h 2008-06-12 15:09:45.859816144 +0200
@@ -0,0 +1,166 @@
+/*
+ * Copyright (C) 2005-2006 Atmel Corporation
+extern struct dma_controller *find_dma_controller(int id);
+
+#endif /* __ASM_AVR32_DMA_CONTROLLER_H */
---- a/include/asm-avr32/intc.h
-+++ /dev/null
+diff --exclude=.git -urN linux-2.6.25.6/include/asm-avr32/intc.h avr32-2.6/include/asm-avr32/intc.h
+--- linux-2.6.25.6/include/asm-avr32/intc.h 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/include/asm-avr32/intc.h 1970-01-01 01:00:00.000000000 +0100
@@ -1,128 +0,0 @@
-#ifndef __ASM_AVR32_INTC_H
-#define __ASM_AVR32_INTC_H
-extern int intc_register_controller(struct irq_controller *ctrl);
-
-#endif /* __ASM_AVR32_INTC_H */
---- a/include/asm-avr32/irq.h
-+++ b/include/asm-avr32/irq.h
-@@ -11,4 +11,14 @@
-
- #define irq_canonicalize(i) (i)
-
-+#ifndef __ASSEMBLER__
-+int nmi_enable(void);
-+void nmi_disable(void);
+diff --exclude=.git -urN linux-2.6.25.6/include/asm-avr32/irq.h avr32-2.6/include/asm-avr32/irq.h
+--- linux-2.6.25.6/include/asm-avr32/irq.h 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/include/asm-avr32/irq.h 2008-06-12 15:04:04.687816302 +0200
+@@ -14,6 +14,11 @@
+ #ifndef __ASSEMBLER__
+ int nmi_enable(void);
+ void nmi_disable(void);
+
+/*
+ * Returns a bitmask of pending interrupts in a group.
+ */
+extern unsigned long intc_get_pending(unsigned int group);
-+#endif
-+
- #endif /* __ASM_AVR32_IOCTLS_H */
---- a/include/asm-avr32/kdebug.h
-+++ b/include/asm-avr32/kdebug.h
-@@ -5,6 +5,7 @@
- enum die_val {
- DIE_BREAKPOINT,
- DIE_SSTEP,
-+ DIE_NMI,
- };
-
- #endif /* __ASM_AVR32_KDEBUG_H */
---- a/include/asm-avr32/ocd.h
-+++ b/include/asm-avr32/ocd.h
-@@ -533,6 +533,11 @@
- #define ocd_read(reg) __ocd_read(OCD_##reg)
- #define ocd_write(reg, value) __ocd_write(OCD_##reg, value)
-
-+struct task_struct;
-+
-+void ocd_enable(struct task_struct *child);
-+void ocd_disable(struct task_struct *child);
-+
- #endif /* !__ASSEMBLER__ */
-
- #endif /* __ASM_AVR32_OCD_H */
---- a/include/asm-avr32/pgtable.h
-+++ b/include/asm-avr32/pgtable.h
-@@ -157,6 +157,7 @@
- #define _PAGE_S(x) _PAGE_NORMAL(x)
-
- #define PAGE_COPY _PAGE_P(PAGE_WRITE | PAGE_READ)
-+#define PAGE_SHARED _PAGE_S(PAGE_WRITE | PAGE_READ)
+ #endif
- #ifndef __ASSEMBLY__
- /*
---- a/include/asm-avr32/processor.h
-+++ b/include/asm-avr32/processor.h
-@@ -57,11 +57,25 @@
- unsigned short cpu_revision;
- enum tlb_config tlb_config;
- unsigned long features;
-+ u32 device_id;
-
- struct cache_info icache;
- struct cache_info dcache;
- };
+ #endif /* __ASM_AVR32_IOCTLS_H */
+diff --exclude=.git -urN linux-2.6.25.6/include/asm-avr32/page.h avr32-2.6/include/asm-avr32/page.h
+--- linux-2.6.25.6/include/asm-avr32/page.h 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/include/asm-avr32/page.h 2008-06-12 15:04:04.691816253 +0200
+@@ -8,13 +8,11 @@
+ #ifndef __ASM_AVR32_PAGE_H
+ #define __ASM_AVR32_PAGE_H
+
++#include <linux/const.h>
++
+ /* PAGE_SHIFT determines the page size */
+ #define PAGE_SHIFT 12
+-#ifdef __ASSEMBLY__
+-#define PAGE_SIZE (1 << PAGE_SHIFT)
+-#else
+-#define PAGE_SIZE (1UL << PAGE_SHIFT)
+-#endif
++#define PAGE_SIZE (_AC(1, UL) << PAGE_SHIFT)
+ #define PAGE_MASK (~(PAGE_SIZE-1))
+ #define PTE_MASK PAGE_MASK
-+static inline unsigned int avr32_get_manufacturer_id(struct avr32_cpuinfo *cpu)
-+{
-+ return (cpu->device_id >> 1) & 0x7f;
-+}
-+static inline unsigned int avr32_get_product_number(struct avr32_cpuinfo *cpu)
-+{
-+ return (cpu->device_id >> 12) & 0xffff;
-+}
-+static inline unsigned int avr32_get_chip_revision(struct avr32_cpuinfo *cpu)
-+{
-+ return (cpu->device_id >> 28) & 0x0f;
-+}
-+
- extern struct avr32_cpuinfo boot_cpu_data;
+diff --exclude=.git -urN linux-2.6.25.6/include/asm-avr32/pci.h avr32-2.6/include/asm-avr32/pci.h
+--- linux-2.6.25.6/include/asm-avr32/pci.h 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/include/asm-avr32/pci.h 2008-06-12 15:09:45.859816144 +0200
+@@ -5,4 +5,6 @@
- #ifdef CONFIG_SMP
---- a/include/asm-avr32/ptrace.h
-+++ b/include/asm-avr32/ptrace.h
-@@ -121,7 +121,15 @@
- };
+ #define PCI_DMA_BUS_IS_PHYS (1)
- #ifdef __KERNEL__
--# define user_mode(regs) (((regs)->sr & MODE_MASK) == MODE_USER)
-+
-+#include <asm/ocd.h>
++#include <asm-generic/pci-dma-compat.h>
+
-+#define arch_ptrace_attach(child) ocd_enable(child)
+ #endif /* __ASM_AVR32_PCI_H__ */
+diff --exclude=.git -urN linux-2.6.25.6/include/asm-avr32/serial.h avr32-2.6/include/asm-avr32/serial.h
+--- linux-2.6.25.6/include/asm-avr32/serial.h 1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/include/asm-avr32/serial.h 2008-06-12 15:04:04.695816483 +0200
+@@ -0,0 +1,13 @@
++#ifndef _ASM_SERIAL_H
++#define _ASM_SERIAL_H
+
-+#define user_mode(regs) (((regs)->sr & MODE_MASK) == MODE_USER)
-+#define instruction_pointer(regs) ((regs)->pc)
-+#define profile_pc(regs) instruction_pointer(regs)
++/*
++ * This assumes you have a 1.8432 MHz clock for your UART.
++ *
++ * It'd be nice if someone built a serial card with a 24.576 MHz
++ * clock, since the 16550A is capable of handling a top speed of 1.5
++ * megabits/second; but this requires the faster clock.
++ */
++#define BASE_BAUD (1843200 / 16)
+
- extern void show_regs (struct pt_regs *);
-
- static __inline__ int valid_user_regs(struct pt_regs *regs)
-@@ -141,9 +149,6 @@
- return 0;
- }
-
--#define instruction_pointer(regs) ((regs)->pc)
--
--#define profile_pc(regs) instruction_pointer(regs)
-
- #endif /* __KERNEL__ */
-
---- a/include/asm-avr32/thread_info.h
-+++ b/include/asm-avr32/thread_info.h
++#endif /* _ASM_SERIAL_H */
+diff --exclude=.git -urN linux-2.6.25.6/include/asm-avr32/thread_info.h avr32-2.6/include/asm-avr32/thread_info.h
+--- linux-2.6.25.6/include/asm-avr32/thread_info.h 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/include/asm-avr32/thread_info.h 2008-06-12 15:09:45.859816144 +0200
@@ -88,6 +88,7 @@
#define TIF_MEMDIE 6
#define TIF_RESTORE_SIGMASK 7 /* restore signal mask in do_signal */
#define TIF_CPU_GOING_TO_SLEEP 8 /* CPU is entering sleep 0 mode */
-+#define TIF_DEBUG 30 /* debugging enabled */
++#define TIF_FREEZE 29
+ #define TIF_DEBUG 30 /* debugging enabled */
#define TIF_USERSPACE 31 /* true if FS sets userspace */
- #define _TIF_SYSCALL_TRACE (1 << TIF_SYSCALL_TRACE)
---- /dev/null
-+++ b/include/linux/atmel_pwm.h
-@@ -0,0 +1,70 @@
-+#ifndef __LINUX_ATMEL_PWM_H
-+#define __LINUX_ATMEL_PWM_H
-+
-+/**
-+ * struct pwm_channel - driver handle to a PWM channel
-+ * @regs: base of this channel's registers
-+ * @index: number of this channel (0..31)
-+ * @mck: base clock rate, which can be prescaled and maybe subdivided
-+ *
-+ * Drivers initialize a pwm_channel structure using pwm_channel_alloc().
-+ * Then they configure its clock rate (derived from MCK), alignment,
-+ * polarity, and duty cycle by writing directly to the channel registers,
-+ * before enabling the channel by calling pwm_channel_enable().
-+ *
-+ * After emitting a PWM signal for the desired length of time, drivers
-+ * may then pwm_channel_disable() or pwm_channel_free(). Both of these
-+ * disable the channel, but when it's freed the IRQ is deconfigured and
-+ * the channel must later be re-allocated and reconfigured.
-+ *
-+ * Note that if the period or duty cycle need to be changed while the
-+ * PWM channel is operating, drivers must use the PWM_CUPD double buffer
-+ * mechanism, either polling until they change or getting implicitly
-+ * notified through a once-per-period interrupt handler.
-+ */
-+struct pwm_channel {
-+ void __iomem *regs;
-+ unsigned index;
-+ unsigned long mck;
-+};
-+
-+extern int pwm_channel_alloc(int index, struct pwm_channel *ch);
-+extern int pwm_channel_free(struct pwm_channel *ch);
-+
-+extern int pwm_clk_alloc(unsigned prescale, unsigned div);
-+extern void pwm_clk_free(unsigned clk);
-+
-+extern int __pwm_channel_onoff(struct pwm_channel *ch, int enabled);
-+
-+#define pwm_channel_enable(ch) __pwm_channel_onoff((ch), 1)
-+#define pwm_channel_disable(ch) __pwm_channel_onoff((ch), 0)
-+
-+/* periodic interrupts, mostly for CUPD changes to period or cycle */
-+extern int pwm_channel_handler(struct pwm_channel *ch,
-+ void (*handler)(struct pwm_channel *ch));
-+
-+/* per-channel registers (banked at pwm_channel->regs) */
-+#define PWM_CMR 0x00 /* mode register */
-+#define PWM_CPR_CPD (1 << 10) /* set: CUPD modifies period */
-+#define PWM_CPR_CPOL (1 << 9) /* set: idle high */
-+#define PWM_CPR_CALG (1 << 8) /* set: center align */
-+#define PWM_CPR_CPRE (0xf << 0) /* mask: rate is mck/(2^pre) */
-+#define PWM_CPR_CLKA (0xb << 0) /* rate CLKA */
-+#define PWM_CPR_CLKB (0xc << 0) /* rate CLKB */
-+#define PWM_CDTY 0x04 /* duty cycle (max of CPRD) */
-+#define PWM_CPRD 0x08 /* period (count up from zero) */
-+#define PWM_CCNT 0x0c /* counter (20 bits?) */
-+#define PWM_CUPD 0x10 /* update CPRD (or CDTY) next period */
-+
-+static inline void
-+pwm_channel_writel(struct pwm_channel *pwmc, unsigned offset, u32 val)
-+{
-+ __raw_writel(val, pwmc->regs + offset);
-+}
-+
-+static inline u32 pwm_channel_readl(struct pwm_channel *pwmc, unsigned offset)
-+{
-+ return __raw_readl(pwmc->regs + offset);
-+}
+diff --exclude=.git -urN linux-2.6.25.6/include/asm-avr32/xor.h avr32-2.6/include/asm-avr32/xor.h
+--- linux-2.6.25.6/include/asm-avr32/xor.h 1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/include/asm-avr32/xor.h 2008-06-12 15:04:04.707817453 +0200
+@@ -0,0 +1,6 @@
++#ifndef _ASM_XOR_H
++#define _ASM_XOR_H
+
-+#endif /* __LINUX_ATMEL_PWM_H */
---- /dev/null
-+++ b/include/linux/atmel_serial.h
-@@ -0,0 +1,127 @@
-+/*
-+ * include/linux/atmel_serial.h
-+ *
-+ * Copyright (C) 2005 Ivan Kokshaysky
-+ * Copyright (C) SAN People
-+ *
-+ * USART registers.
-+ * Based on AT91RM9200 datasheet revision E.
-+ *
-+ * This program is free software; you can redistribute it and/or modify
-+ * it under the terms of the GNU General Public License as published by
-+ * the Free Software Foundation; either version 2 of the License, or
-+ * (at your option) any later version.
-+ */
-+
-+#ifndef ATMEL_SERIAL_H
-+#define ATMEL_SERIAL_H
-+
-+#define ATMEL_US_CR 0x00 /* Control Register */
-+#define ATMEL_US_RSTRX (1 << 2) /* Reset Receiver */
-+#define ATMEL_US_RSTTX (1 << 3) /* Reset Transmitter */
-+#define ATMEL_US_RXEN (1 << 4) /* Receiver Enable */
-+#define ATMEL_US_RXDIS (1 << 5) /* Receiver Disable */
-+#define ATMEL_US_TXEN (1 << 6) /* Transmitter Enable */
-+#define ATMEL_US_TXDIS (1 << 7) /* Transmitter Disable */
-+#define ATMEL_US_RSTSTA (1 << 8) /* Reset Status Bits */
-+#define ATMEL_US_STTBRK (1 << 9) /* Start Break */
-+#define ATMEL_US_STPBRK (1 << 10) /* Stop Break */
-+#define ATMEL_US_STTTO (1 << 11) /* Start Time-out */
-+#define ATMEL_US_SENDA (1 << 12) /* Send Address */
-+#define ATMEL_US_RSTIT (1 << 13) /* Reset Iterations */
-+#define ATMEL_US_RSTNACK (1 << 14) /* Reset Non Acknowledge */
-+#define ATMEL_US_RETTO (1 << 15) /* Rearm Time-out */
-+#define ATMEL_US_DTREN (1 << 16) /* Data Terminal Ready Enable [AT91RM9200 only] */
-+#define ATMEL_US_DTRDIS (1 << 17) /* Data Terminal Ready Disable [AT91RM9200 only] */
-+#define ATMEL_US_RTSEN (1 << 18) /* Request To Send Enable */
-+#define ATMEL_US_RTSDIS (1 << 19) /* Request To Send Disable */
-+
-+#define ATMEL_US_MR 0x04 /* Mode Register */
-+#define ATMEL_US_USMODE (0xf << 0) /* Mode of the USART */
-+#define ATMEL_US_USMODE_NORMAL 0
-+#define ATMEL_US_USMODE_RS485 1
-+#define ATMEL_US_USMODE_HWHS 2
-+#define ATMEL_US_USMODE_MODEM 3
-+#define ATMEL_US_USMODE_ISO7816_T0 4
-+#define ATMEL_US_USMODE_ISO7816_T1 6
-+#define ATMEL_US_USMODE_IRDA 8
-+#define ATMEL_US_USCLKS (3 << 4) /* Clock Selection */
-+#define ATMEL_US_USCLKS_MCK (0 << 4)
-+#define ATMEL_US_USCLKS_MCK_DIV8 (1 << 4)
-+#define ATMEL_US_USCLKS_SCK (3 << 4)
-+#define ATMEL_US_CHRL (3 << 6) /* Character Length */
-+#define ATMEL_US_CHRL_5 (0 << 6)
-+#define ATMEL_US_CHRL_6 (1 << 6)
-+#define ATMEL_US_CHRL_7 (2 << 6)
-+#define ATMEL_US_CHRL_8 (3 << 6)
-+#define ATMEL_US_SYNC (1 << 8) /* Synchronous Mode Select */
-+#define ATMEL_US_PAR (7 << 9) /* Parity Type */
-+#define ATMEL_US_PAR_EVEN (0 << 9)
-+#define ATMEL_US_PAR_ODD (1 << 9)
-+#define ATMEL_US_PAR_SPACE (2 << 9)
-+#define ATMEL_US_PAR_MARK (3 << 9)
-+#define ATMEL_US_PAR_NONE (4 << 9)
-+#define ATMEL_US_PAR_MULTI_DROP (6 << 9)
-+#define ATMEL_US_NBSTOP (3 << 12) /* Number of Stop Bits */
-+#define ATMEL_US_NBSTOP_1 (0 << 12)
-+#define ATMEL_US_NBSTOP_1_5 (1 << 12)
-+#define ATMEL_US_NBSTOP_2 (2 << 12)
-+#define ATMEL_US_CHMODE (3 << 14) /* Channel Mode */
-+#define ATMEL_US_CHMODE_NORMAL (0 << 14)
-+#define ATMEL_US_CHMODE_ECHO (1 << 14)
-+#define ATMEL_US_CHMODE_LOC_LOOP (2 << 14)
-+#define ATMEL_US_CHMODE_REM_LOOP (3 << 14)
-+#define ATMEL_US_MSBF (1 << 16) /* Bit Order */
-+#define ATMEL_US_MODE9 (1 << 17) /* 9-bit Character Length */
-+#define ATMEL_US_CLKO (1 << 18) /* Clock Output Select */
-+#define ATMEL_US_OVER (1 << 19) /* Oversampling Mode */
-+#define ATMEL_US_INACK (1 << 20) /* Inhibit Non Acknowledge */
-+#define ATMEL_US_DSNACK (1 << 21) /* Disable Successive NACK */
-+#define ATMEL_US_MAX_ITER (7 << 24) /* Max Iterations */
-+#define ATMEL_US_FILTER (1 << 28) /* Infrared Receive Line Filter */
-+
-+#define ATMEL_US_IER 0x08 /* Interrupt Enable Register */
-+#define ATMEL_US_RXRDY (1 << 0) /* Receiver Ready */
-+#define ATMEL_US_TXRDY (1 << 1) /* Transmitter Ready */
-+#define ATMEL_US_RXBRK (1 << 2) /* Break Received / End of Break */
-+#define ATMEL_US_ENDRX (1 << 3) /* End of Receiver Transfer */
-+#define ATMEL_US_ENDTX (1 << 4) /* End of Transmitter Transfer */
-+#define ATMEL_US_OVRE (1 << 5) /* Overrun Error */
-+#define ATMEL_US_FRAME (1 << 6) /* Framing Error */
-+#define ATMEL_US_PARE (1 << 7) /* Parity Error */
-+#define ATMEL_US_TIMEOUT (1 << 8) /* Receiver Time-out */
-+#define ATMEL_US_TXEMPTY (1 << 9) /* Transmitter Empty */
-+#define ATMEL_US_ITERATION (1 << 10) /* Max number of Repetitions Reached */
-+#define ATMEL_US_TXBUFE (1 << 11) /* Transmission Buffer Empty */
-+#define ATMEL_US_RXBUFF (1 << 12) /* Reception Buffer Full */
-+#define ATMEL_US_NACK (1 << 13) /* Non Acknowledge */
-+#define ATMEL_US_RIIC (1 << 16) /* Ring Indicator Input Change [AT91RM9200 only] */
-+#define ATMEL_US_DSRIC (1 << 17) /* Data Set Ready Input Change [AT91RM9200 only] */
-+#define ATMEL_US_DCDIC (1 << 18) /* Data Carrier Detect Input Change [AT91RM9200 only] */
-+#define ATMEL_US_CTSIC (1 << 19) /* Clear to Send Input Change */
-+#define ATMEL_US_RI (1 << 20) /* RI */
-+#define ATMEL_US_DSR (1 << 21) /* DSR */
-+#define ATMEL_US_DCD (1 << 22) /* DCD */
-+#define ATMEL_US_CTS (1 << 23) /* CTS */
-+
-+#define ATMEL_US_IDR 0x0c /* Interrupt Disable Register */
-+#define ATMEL_US_IMR 0x10 /* Interrupt Mask Register */
-+#define ATMEL_US_CSR 0x14 /* Channel Status Register */
-+#define ATMEL_US_RHR 0x18 /* Receiver Holding Register */
-+#define ATMEL_US_THR 0x1c /* Transmitter Holding Register */
-+#define ATMEL_US_SYNH (1 << 15) /* Transmit/Receive Sync [AT91SAM9261 only] */
-+
-+#define ATMEL_US_BRGR 0x20 /* Baud Rate Generator Register */
-+#define ATMEL_US_CD (0xffff << 0) /* Clock Divider */
-+
-+#define ATMEL_US_RTOR 0x24 /* Receiver Time-out Register */
-+#define ATMEL_US_TO (0xffff << 0) /* Time-out Value */
-+
-+#define ATMEL_US_TTGR 0x28 /* Transmitter Timeguard Register */
-+#define ATMEL_US_TG (0xff << 0) /* Timeguard Value */
-+
-+#define ATMEL_US_FIDI 0x40 /* FI DI Ratio Register */
-+#define ATMEL_US_NER 0x44 /* Number of Errors Register */
-+#define ATMEL_US_IF 0x4c /* IrDA Filter Register */
++#include <asm-generic/xor.h>
+
+#endif
---- /dev/null
-+++ b/include/linux/atmel_tc.h
+diff --exclude=.git -urN linux-2.6.25.6/include/linux/atmel_tc.h avr32-2.6/include/linux/atmel_tc.h
+--- linux-2.6.25.6/include/linux/atmel_tc.h 1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/include/linux/atmel_tc.h 2008-06-12 15:04:07.586819080 +0200
@@ -0,0 +1,252 @@
+/*
+ * Timer/Counter Unit (TC) registers.
+#define ATMEL_TC_ETRGS (1 << 7) /* external trigger */
+
+#endif
---- /dev/null
-+++ b/include/linux/usb/atmel_usba_udc.h
+diff --exclude=.git -urN linux-2.6.25.6/include/linux/fs.h avr32-2.6/include/linux/fs.h
+--- linux-2.6.25.6/include/linux/fs.h 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/include/linux/fs.h 2008-06-12 15:09:46.255815187 +0200
+@@ -1691,6 +1691,8 @@
+ extern int invalidate_inode_pages2(struct address_space *mapping);
+ extern int invalidate_inode_pages2_range(struct address_space *mapping,
+ pgoff_t start, pgoff_t end);
++extern void generic_sync_sb_inodes(struct super_block *sb,
++ struct writeback_control *wbc);
+ extern int write_inode_now(struct inode *, int);
+ extern int filemap_fdatawrite(struct address_space *);
+ extern int filemap_flush(struct address_space *);
+diff --exclude=.git -urN linux-2.6.25.6/include/linux/usb/atmel_usba_udc.h avr32-2.6/include/linux/usb/atmel_usba_udc.h
+--- linux-2.6.25.6/include/linux/usb/atmel_usba_udc.h 1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/include/linux/usb/atmel_usba_udc.h 2008-06-12 15:04:07.986816119 +0200
@@ -0,0 +1,22 @@
+/*
+ * Platform data definitions for Atmel USBA gadget driver.
+};
+
+#endif /* __LINUX_USB_USBA_H */
---- a/include/video/atmel_lcdc.h
-+++ b/include/video/atmel_lcdc.h
-@@ -22,7 +22,7 @@
- #ifndef __ATMEL_LCDC_H__
- #define __ATMEL_LCDC_H__
-
-- /* LCD Controller info data structure */
-+ /* LCD Controller info data structure, stored in device platform_data */
- struct atmel_lcdfb_info {
- spinlock_t lock;
- struct fb_info *info;
-@@ -33,7 +33,14 @@
- struct platform_device *pdev;
- struct clk *bus_clk;
- struct clk *lcdc_clk;
-- unsigned int default_bpp;
-+
-+#ifdef CONFIG_BACKLIGHT_ATMEL_LCDC
-+ struct backlight_device *backlight;
-+ u8 bl_power;
-+#endif
-+ bool lcdcon_is_backlight;
-+
-+ u8 default_bpp;
- unsigned int default_lcdcon2;
- unsigned int default_dmacon;
- void (*atmel_lcdfb_power_control)(int on);
-@@ -115,20 +122,20 @@
- #define ATMEL_LCDC_MEMOR_LITTLE (1 << 31)
-
- #define ATMEL_LCDC_TIM1 0x0808
--#define ATMEL_LCDC_VFP (0xff << 0)
-+#define ATMEL_LCDC_VFP (0xffU << 0)
- #define ATMEL_LCDC_VBP_OFFSET 8
--#define ATMEL_LCDC_VBP (0xff << ATMEL_LCDC_VBP_OFFSET)
-+#define ATMEL_LCDC_VBP (0xffU << ATMEL_LCDC_VBP_OFFSET)
- #define ATMEL_LCDC_VPW_OFFSET 16
--#define ATMEL_LCDC_VPW (0x3f << ATMEL_LCDC_VPW_OFFSET)
-+#define ATMEL_LCDC_VPW (0x3fU << ATMEL_LCDC_VPW_OFFSET)
- #define ATMEL_LCDC_VHDLY_OFFSET 24
--#define ATMEL_LCDC_VHDLY (0xf << ATMEL_LCDC_VHDLY_OFFSET)
-+#define ATMEL_LCDC_VHDLY (0xfU << ATMEL_LCDC_VHDLY_OFFSET)
-
- #define ATMEL_LCDC_TIM2 0x080c
--#define ATMEL_LCDC_HBP (0xff << 0)
-+#define ATMEL_LCDC_HBP (0xffU << 0)
- #define ATMEL_LCDC_HPW_OFFSET 8
--#define ATMEL_LCDC_HPW (0x3f << ATMEL_LCDC_HPW_OFFSET)
-+#define ATMEL_LCDC_HPW (0x3fU << ATMEL_LCDC_HPW_OFFSET)
- #define ATMEL_LCDC_HFP_OFFSET 21
--#define ATMEL_LCDC_HFP (0x7ff << ATMEL_LCDC_HFP_OFFSET)
-+#define ATMEL_LCDC_HFP (0x7ffU << ATMEL_LCDC_HFP_OFFSET)
-
- #define ATMEL_LCDC_LCDFRMCFG 0x0810
- #define ATMEL_LCDC_LINEVAL (0x7ff << 0)
---- a/init/do_mounts.c
-+++ b/init/do_mounts.c
-@@ -219,8 +219,14 @@
+diff --exclude=.git -urN linux-2.6.25.6/include/mtd/Kbuild avr32-2.6/include/mtd/Kbuild
+--- linux-2.6.25.6/include/mtd/Kbuild 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/include/mtd/Kbuild 2008-06-12 15:04:08.018816005 +0200
+@@ -3,5 +3,4 @@
+ header-y += mtd-abi.h
+ header-y += mtd-user.h
+ header-y += nftl-user.h
+-header-y += ubi-header.h
+ header-y += ubi-user.h
+diff --exclude=.git -urN linux-2.6.25.6/include/mtd/ubi-header.h avr32-2.6/include/mtd/ubi-header.h
+--- linux-2.6.25.6/include/mtd/ubi-header.h 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/include/mtd/ubi-header.h 1970-01-01 01:00:00.000000000 +0100
+@@ -1,372 +0,0 @@
+-/*
+- * Copyright (c) International Business Machines Corp., 2006
+- *
+- * This program is free software; you can redistribute it and/or modify
+- * it under the terms of the GNU General Public License as published by
+- * the Free Software Foundation; either version 2 of the License, or
+- * (at your option) any later version.
+- *
+- * This program is distributed in the hope that it will be useful,
+- * but WITHOUT ANY WARRANTY; without even the implied warranty of
+- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
+- * the GNU General Public License for more details.
+- *
+- * You should have received a copy of the GNU General Public License
+- * along with this program; if not, write to the Free Software
+- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+- *
+- * Authors: Artem Bityutskiy (Битюцкий Артём)
+- * Thomas Gleixner
+- * Frank Haverkamp
+- * Oliver Lohmann
+- * Andreas Arnez
+- */
+-
+-/*
+- * This file defines the layout of UBI headers and all the other UBI on-flash
+- * data structures. May be included by user-space.
+- */
+-
+-#ifndef __UBI_HEADER_H__
+-#define __UBI_HEADER_H__
+-
+-#include <asm/byteorder.h>
+-
+-/* The version of UBI images supported by this implementation */
+-#define UBI_VERSION 1
+-
+-/* The highest erase counter value supported by this implementation */
+-#define UBI_MAX_ERASECOUNTER 0x7FFFFFFF
+-
+-/* The initial CRC32 value used when calculating CRC checksums */
+-#define UBI_CRC32_INIT 0xFFFFFFFFU
+-
+-/* Erase counter header magic number (ASCII "UBI#") */
+-#define UBI_EC_HDR_MAGIC 0x55424923
+-/* Volume identifier header magic number (ASCII "UBI!") */
+-#define UBI_VID_HDR_MAGIC 0x55424921
+-
+-/*
+- * Volume type constants used in the volume identifier header.
+- *
+- * @UBI_VID_DYNAMIC: dynamic volume
+- * @UBI_VID_STATIC: static volume
+- */
+-enum {
+- UBI_VID_DYNAMIC = 1,
+- UBI_VID_STATIC = 2
+-};
+-
+-/*
+- * Volume flags used in the volume table record.
+- *
+- * @UBI_VTBL_AUTORESIZE_FLG: auto-resize this volume
+- *
+- * %UBI_VTBL_AUTORESIZE_FLG flag can be set only for one volume in the volume
+- * table. UBI automatically re-sizes the volume which has this flag and makes
+- * the volume to be of largest possible size. This means that if after the
+- * initialization UBI finds out that there are available physical eraseblocks
+- * present on the device, it automatically appends all of them to the volume
+- * (the physical eraseblocks reserved for bad eraseblocks handling and other
+- * reserved physical eraseblocks are not taken). So, if there is a volume with
+- * the %UBI_VTBL_AUTORESIZE_FLG flag set, the amount of available logical
+- * eraseblocks will be zero after UBI is loaded, because all of them will be
+- * reserved for this volume. Note, the %UBI_VTBL_AUTORESIZE_FLG bit is cleared
+- * after the volume had been initialized.
+- *
+- * The auto-resize feature is useful for device production purposes. For
+- * example, different NAND flash chips may have different amount of initial bad
+- * eraseblocks, depending of particular chip instance. Manufacturers of NAND
+- * chips usually guarantee that the amount of initial bad eraseblocks does not
+- * exceed certain percent, e.g. 2%. When one creates an UBI image which will be
+- * flashed to the end devices in production, he does not know the exact amount
+- * of good physical eraseblocks the NAND chip on the device will have, but this
+- * number is required to calculate the volume sized and put them to the volume
+- * table of the UBI image. In this case, one of the volumes (e.g., the one
+- * which will store the root file system) is marked as "auto-resizable", and
+- * UBI will adjust its size on the first boot if needed.
+- *
+- * Note, first UBI reserves some amount of physical eraseblocks for bad
+- * eraseblock handling, and then re-sizes the volume, not vice-versa. This
+- * means that the pool of reserved physical eraseblocks will always be present.
+- */
+-enum {
+- UBI_VTBL_AUTORESIZE_FLG = 0x01,
+-};
+-
+-/*
+- * Compatibility constants used by internal volumes.
+- *
+- * @UBI_COMPAT_DELETE: delete this internal volume before anything is written
+- * to the flash
+- * @UBI_COMPAT_RO: attach this device in read-only mode
+- * @UBI_COMPAT_PRESERVE: preserve this internal volume - do not touch its
+- * physical eraseblocks, don't allow the wear-leveling unit to move them
+- * @UBI_COMPAT_REJECT: reject this UBI image
+- */
+-enum {
+- UBI_COMPAT_DELETE = 1,
+- UBI_COMPAT_RO = 2,
+- UBI_COMPAT_PRESERVE = 4,
+- UBI_COMPAT_REJECT = 5
+-};
+-
+-/* Sizes of UBI headers */
+-#define UBI_EC_HDR_SIZE sizeof(struct ubi_ec_hdr)
+-#define UBI_VID_HDR_SIZE sizeof(struct ubi_vid_hdr)
+-
+-/* Sizes of UBI headers without the ending CRC */
+-#define UBI_EC_HDR_SIZE_CRC (UBI_EC_HDR_SIZE - sizeof(__be32))
+-#define UBI_VID_HDR_SIZE_CRC (UBI_VID_HDR_SIZE - sizeof(__be32))
+-
+-/**
+- * struct ubi_ec_hdr - UBI erase counter header.
+- * @magic: erase counter header magic number (%UBI_EC_HDR_MAGIC)
+- * @version: version of UBI implementation which is supposed to accept this
+- * UBI image
+- * @padding1: reserved for future, zeroes
+- * @ec: the erase counter
+- * @vid_hdr_offset: where the VID header starts
+- * @data_offset: where the user data start
+- * @padding2: reserved for future, zeroes
+- * @hdr_crc: erase counter header CRC checksum
+- *
+- * The erase counter header takes 64 bytes and has a plenty of unused space for
+- * future usage. The unused fields are zeroed. The @version field is used to
+- * indicate the version of UBI implementation which is supposed to be able to
+- * work with this UBI image. If @version is greater then the current UBI
+- * version, the image is rejected. This may be useful in future if something
+- * is changed radically. This field is duplicated in the volume identifier
+- * header.
+- *
+- * The @vid_hdr_offset and @data_offset fields contain the offset of the the
+- * volume identifier header and user data, relative to the beginning of the
+- * physical eraseblock. These values have to be the same for all physical
+- * eraseblocks.
+- */
+-struct ubi_ec_hdr {
+- __be32 magic;
+- __u8 version;
+- __u8 padding1[3];
+- __be64 ec; /* Warning: the current limit is 31-bit anyway! */
+- __be32 vid_hdr_offset;
+- __be32 data_offset;
+- __u8 padding2[36];
+- __be32 hdr_crc;
+-} __attribute__ ((packed));
+-
+-/**
+- * struct ubi_vid_hdr - on-flash UBI volume identifier header.
+- * @magic: volume identifier header magic number (%UBI_VID_HDR_MAGIC)
+- * @version: UBI implementation version which is supposed to accept this UBI
+- * image (%UBI_VERSION)
+- * @vol_type: volume type (%UBI_VID_DYNAMIC or %UBI_VID_STATIC)
+- * @copy_flag: if this logical eraseblock was copied from another physical
+- * eraseblock (for wear-leveling reasons)
+- * @compat: compatibility of this volume (%0, %UBI_COMPAT_DELETE,
+- * %UBI_COMPAT_IGNORE, %UBI_COMPAT_PRESERVE, or %UBI_COMPAT_REJECT)
+- * @vol_id: ID of this volume
+- * @lnum: logical eraseblock number
+- * @leb_ver: version of this logical eraseblock (IMPORTANT: obsolete, to be
+- * removed, kept only for not breaking older UBI users)
+- * @data_size: how many bytes of data this logical eraseblock contains
+- * @used_ebs: total number of used logical eraseblocks in this volume
+- * @data_pad: how many bytes at the end of this physical eraseblock are not
+- * used
+- * @data_crc: CRC checksum of the data stored in this logical eraseblock
+- * @padding1: reserved for future, zeroes
+- * @sqnum: sequence number
+- * @padding2: reserved for future, zeroes
+- * @hdr_crc: volume identifier header CRC checksum
+- *
+- * The @sqnum is the value of the global sequence counter at the time when this
+- * VID header was created. The global sequence counter is incremented each time
+- * UBI writes a new VID header to the flash, i.e. when it maps a logical
+- * eraseblock to a new physical eraseblock. The global sequence counter is an
+- * unsigned 64-bit integer and we assume it never overflows. The @sqnum
+- * (sequence number) is used to distinguish between older and newer versions of
+- * logical eraseblocks.
+- *
+- * There are 2 situations when there may be more then one physical eraseblock
+- * corresponding to the same logical eraseblock, i.e., having the same @vol_id
+- * and @lnum values in the volume identifier header. Suppose we have a logical
+- * eraseblock L and it is mapped to the physical eraseblock P.
+- *
+- * 1. Because UBI may erase physical eraseblocks asynchronously, the following
+- * situation is possible: L is asynchronously erased, so P is scheduled for
+- * erasure, then L is written to,i.e. mapped to another physical eraseblock P1,
+- * so P1 is written to, then an unclean reboot happens. Result - there are 2
+- * physical eraseblocks P and P1 corresponding to the same logical eraseblock
+- * L. But P1 has greater sequence number, so UBI picks P1 when it attaches the
+- * flash.
+- *
+- * 2. From time to time UBI moves logical eraseblocks to other physical
+- * eraseblocks for wear-leveling reasons. If, for example, UBI moves L from P
+- * to P1, and an unclean reboot happens before P is physically erased, there
+- * are two physical eraseblocks P and P1 corresponding to L and UBI has to
+- * select one of them when the flash is attached. The @sqnum field says which
+- * PEB is the original (obviously P will have lower @sqnum) and the copy. But
+- * it is not enough to select the physical eraseblock with the higher sequence
+- * number, because the unclean reboot could have happen in the middle of the
+- * copying process, so the data in P is corrupted. It is also not enough to
+- * just select the physical eraseblock with lower sequence number, because the
+- * data there may be old (consider a case if more data was added to P1 after
+- * the copying). Moreover, the unclean reboot may happen when the erasure of P
+- * was just started, so it result in unstable P, which is "mostly" OK, but
+- * still has unstable bits.
+- *
+- * UBI uses the @copy_flag field to indicate that this logical eraseblock is a
+- * copy. UBI also calculates data CRC when the data is moved and stores it at
+- * the @data_crc field of the copy (P1). So when UBI needs to pick one physical
+- * eraseblock of two (P or P1), the @copy_flag of the newer one (P1) is
+- * examined. If it is cleared, the situation* is simple and the newer one is
+- * picked. If it is set, the data CRC of the copy (P1) is examined. If the CRC
+- * checksum is correct, this physical eraseblock is selected (P1). Otherwise
+- * the older one (P) is selected.
+- *
+- * Note, there is an obsolete @leb_ver field which was used instead of @sqnum
+- * in the past. But it is not used anymore and we keep it in order to be able
+- * to deal with old UBI images. It will be removed at some point.
+- *
+- * There are 2 sorts of volumes in UBI: user volumes and internal volumes.
+- * Internal volumes are not seen from outside and are used for various internal
+- * UBI purposes. In this implementation there is only one internal volume - the
+- * layout volume. Internal volumes are the main mechanism of UBI extensions.
+- * For example, in future one may introduce a journal internal volume. Internal
+- * volumes have their own reserved range of IDs.
+- *
+- * The @compat field is only used for internal volumes and contains the "degree
+- * of their compatibility". It is always zero for user volumes. This field
+- * provides a mechanism to introduce UBI extensions and to be still compatible
+- * with older UBI binaries. For example, if someone introduced a journal in
+- * future, he would probably use %UBI_COMPAT_DELETE compatibility for the
+- * journal volume. And in this case, older UBI binaries, which know nothing
+- * about the journal volume, would just delete this volume and work perfectly
+- * fine. This is similar to what Ext2fs does when it is fed by an Ext3fs image
+- * - it just ignores the Ext3fs journal.
+- *
+- * The @data_crc field contains the CRC checksum of the contents of the logical
+- * eraseblock if this is a static volume. In case of dynamic volumes, it does
+- * not contain the CRC checksum as a rule. The only exception is when the
+- * data of the physical eraseblock was moved by the wear-leveling unit, then
+- * the wear-leveling unit calculates the data CRC and stores it in the
+- * @data_crc field. And of course, the @copy_flag is %in this case.
+- *
+- * The @data_size field is used only for static volumes because UBI has to know
+- * how many bytes of data are stored in this eraseblock. For dynamic volumes,
+- * this field usually contains zero. The only exception is when the data of the
+- * physical eraseblock was moved to another physical eraseblock for
+- * wear-leveling reasons. In this case, UBI calculates CRC checksum of the
+- * contents and uses both @data_crc and @data_size fields. In this case, the
+- * @data_size field contains data size.
+- *
+- * The @used_ebs field is used only for static volumes and indicates how many
+- * eraseblocks the data of the volume takes. For dynamic volumes this field is
+- * not used and always contains zero.
+- *
+- * The @data_pad is calculated when volumes are created using the alignment
+- * parameter. So, effectively, the @data_pad field reduces the size of logical
+- * eraseblocks of this volume. This is very handy when one uses block-oriented
+- * software (say, cramfs) on top of the UBI volume.
+- */
+-struct ubi_vid_hdr {
+- __be32 magic;
+- __u8 version;
+- __u8 vol_type;
+- __u8 copy_flag;
+- __u8 compat;
+- __be32 vol_id;
+- __be32 lnum;
+- __be32 leb_ver; /* obsolete, to be removed, don't use */
+- __be32 data_size;
+- __be32 used_ebs;
+- __be32 data_pad;
+- __be32 data_crc;
+- __u8 padding1[4];
+- __be64 sqnum;
+- __u8 padding2[12];
+- __be32 hdr_crc;
+-} __attribute__ ((packed));
+-
+-/* Internal UBI volumes count */
+-#define UBI_INT_VOL_COUNT 1
+-
+-/*
+- * Starting ID of internal volumes. There is reserved room for 4096 internal
+- * volumes.
+- */
+-#define UBI_INTERNAL_VOL_START (0x7FFFFFFF - 4096)
+-
+-/* The layout volume contains the volume table */
+-
+-#define UBI_LAYOUT_VOLUME_ID UBI_INTERNAL_VOL_START
+-#define UBI_LAYOUT_VOLUME_TYPE UBI_VID_DYNAMIC
+-#define UBI_LAYOUT_VOLUME_ALIGN 1
+-#define UBI_LAYOUT_VOLUME_EBS 2
+-#define UBI_LAYOUT_VOLUME_NAME "layout volume"
+-#define UBI_LAYOUT_VOLUME_COMPAT UBI_COMPAT_REJECT
+-
+-/* The maximum number of volumes per one UBI device */
+-#define UBI_MAX_VOLUMES 128
+-
+-/* The maximum volume name length */
+-#define UBI_VOL_NAME_MAX 127
+-
+-/* Size of the volume table record */
+-#define UBI_VTBL_RECORD_SIZE sizeof(struct ubi_vtbl_record)
+-
+-/* Size of the volume table record without the ending CRC */
+-#define UBI_VTBL_RECORD_SIZE_CRC (UBI_VTBL_RECORD_SIZE - sizeof(__be32))
+-
+-/**
+- * struct ubi_vtbl_record - a record in the volume table.
+- * @reserved_pebs: how many physical eraseblocks are reserved for this volume
+- * @alignment: volume alignment
+- * @data_pad: how many bytes are unused at the end of the each physical
+- * eraseblock to satisfy the requested alignment
+- * @vol_type: volume type (%UBI_DYNAMIC_VOLUME or %UBI_STATIC_VOLUME)
+- * @upd_marker: if volume update was started but not finished
+- * @name_len: volume name length
+- * @name: the volume name
+- * @flags: volume flags (%UBI_VTBL_AUTORESIZE_FLG)
+- * @padding: reserved, zeroes
+- * @crc: a CRC32 checksum of the record
+- *
+- * The volume table records are stored in the volume table, which is stored in
+- * the layout volume. The layout volume consists of 2 logical eraseblock, each
+- * of which contains a copy of the volume table (i.e., the volume table is
+- * duplicated). The volume table is an array of &struct ubi_vtbl_record
+- * objects indexed by the volume ID.
+- *
+- * If the size of the logical eraseblock is large enough to fit
+- * %UBI_MAX_VOLUMES records, the volume table contains %UBI_MAX_VOLUMES
+- * records. Otherwise, it contains as many records as it can fit (i.e., size of
+- * logical eraseblock divided by sizeof(struct ubi_vtbl_record)).
+- *
+- * The @upd_marker flag is used to implement volume update. It is set to %1
+- * before update and set to %0 after the update. So if the update operation was
+- * interrupted, UBI knows that the volume is corrupted.
+- *
+- * The @alignment field is specified when the volume is created and cannot be
+- * later changed. It may be useful, for example, when a block-oriented file
+- * system works on top of UBI. The @data_pad field is calculated using the
+- * logical eraseblock size and @alignment. The alignment must be multiple to the
+- * minimal flash I/O unit. If @alignment is 1, all the available space of
+- * the physical eraseblocks is used.
+- *
+- * Empty records contain all zeroes and the CRC checksum of those zeroes.
+- */
+-struct ubi_vtbl_record {
+- __be32 reserved_pebs;
+- __be32 alignment;
+- __be32 data_pad;
+- __u8 vol_type;
+- __u8 upd_marker;
+- __be16 name_len;
+- __u8 name[UBI_VOL_NAME_MAX+1];
+- __u8 flags;
+- __u8 padding[23];
+- __be32 crc;
+-} __attribute__ ((packed));
+-
+-#endif /* !__UBI_HEADER_H__ */
+diff --exclude=.git -urN linux-2.6.25.6/init/do_mounts.c avr32-2.6/init/do_mounts.c
+--- linux-2.6.25.6/init/do_mounts.c 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/init/do_mounts.c 2008-06-12 15:09:46.451815572 +0200
+@@ -126,8 +126,14 @@
static int __init rootwait_setup(char *str)
{
root_wait = 1;
return 1;
}
---- a/kernel/ptrace.c
-+++ b/kernel/ptrace.c
-@@ -470,6 +470,8 @@
- lock_kernel();
- if (request == PTRACE_TRACEME) {
- ret = ptrace_traceme();
-+ if (!ret)
-+ arch_ptrace_attach(current);
- goto out;
- }
-
---- a/MAINTAINERS
-+++ b/MAINTAINERS
-@@ -671,6 +671,12 @@
- W: http://www.at91.com/
- S: Maintained
-
-+ATMEL AT91 / AT32 SERIAL DRIVER
-+P: Haavard Skinnemoen
-+M: hskinnemoen@atmel.com
-+L: linux-kernel@vger.kernel.org
-+S: Supported
-+
- ATMEL LCDFB DRIVER
- P: Nicolas Ferre
- M: nicolas.ferre@atmel.com
---- /dev/null
-+++ b/sound/avr32/ac97c.c
+@@ -347,7 +353,8 @@
+
+ if (saved_root_name[0]) {
+ root_device_name = saved_root_name;
+- if (!strncmp(root_device_name, "mtd", 3)) {
++ if (!strncmp(root_device_name, "mtd", 3) ||
++ !strncmp(root_device_name, "ubi", 3)) {
+ mount_block_root(root_device_name, root_mountflags);
+ goto out;
+ }
+diff --exclude=.git -urN linux-2.6.25.6/sound/avr32/ac97c.c avr32-2.6/sound/avr32/ac97c.c
+--- linux-2.6.25.6/sound/avr32/ac97c.c 1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/sound/avr32/ac97c.c 2008-06-12 15:09:47.011815952 +0200
@@ -0,0 +1,914 @@
+/*
+ * Driver for the Atmel AC97 controller
+ ac97c_writel(chip, COTHR, word);
+ goto read_reg;
+ }
-+ mdelay(10);
++ udelay(10);
+ } while (--timeout);
+
+ if (!--write)
+ unsigned short val = ac97c_readl(chip, CORHR);
+ return val;
+ }
-+ mdelay(10);
++ udelay(10);
+ } while (--timeout);
+
+ if (!--write)
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("Driver for Atmel AC97 Controller");
+MODULE_AUTHOR("Haavard Skinnemoen <hskinnemoen@atmel.com>");
---- /dev/null
-+++ b/sound/avr32/ac97c.h
+diff --exclude=.git -urN linux-2.6.25.6/sound/avr32/ac97c.h avr32-2.6/sound/avr32/ac97c.h
+--- linux-2.6.25.6/sound/avr32/ac97c.h 1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/sound/avr32/ac97c.h 2008-06-12 15:09:47.011815952 +0200
@@ -0,0 +1,71 @@
+/*
+ * Register definitions for the Atmel AC97 Controller.
+#define AC97C_CHANNEL_B 0x2
+
+#endif /* __SOUND_AVR32_AC97C_H */
---- /dev/null
-+++ b/sound/avr32/Kconfig
+diff --exclude=.git -urN linux-2.6.25.6/sound/avr32/Kconfig avr32-2.6/sound/avr32/Kconfig
+--- linux-2.6.25.6/sound/avr32/Kconfig 1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/sound/avr32/Kconfig 2008-06-12 15:09:47.011815952 +0200
@@ -0,0 +1,11 @@
+menu "AVR32 devices"
+ depends on SND != n && AVR32
+ ALSA sound driver for the Atmel AC97 controller.
+
+endmenu
---- /dev/null
-+++ b/sound/avr32/Makefile
+diff --exclude=.git -urN linux-2.6.25.6/sound/avr32/Makefile avr32-2.6/sound/avr32/Makefile
+--- linux-2.6.25.6/sound/avr32/Makefile 1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/sound/avr32/Makefile 2008-06-12 15:09:47.011815952 +0200
@@ -0,0 +1,3 @@
+snd-atmel-ac97-objs := ac97c.o
+
+obj-$(CONFIG_SND_ATMEL_AC97) += snd-atmel-ac97.o
---- a/sound/Kconfig
-+++ b/sound/Kconfig
+diff --exclude=.git -urN linux-2.6.25.6/sound/Kconfig avr32-2.6/sound/Kconfig
+--- linux-2.6.25.6/sound/Kconfig 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/sound/Kconfig 2008-06-12 15:09:47.011815952 +0200
@@ -63,6 +63,8 @@
source "sound/arm/Kconfig"
if SPI
source "sound/spi/Kconfig"
endif
---- a/sound/Makefile
-+++ b/sound/Makefile
+diff --exclude=.git -urN linux-2.6.25.6/sound/Makefile avr32-2.6/sound/Makefile
+--- linux-2.6.25.6/sound/Makefile 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/sound/Makefile 2008-06-12 15:09:47.011815952 +0200
@@ -6,7 +6,7 @@
obj-$(CONFIG_SOUND_PRIME) += oss/
obj-$(CONFIG_DMASOUND) += oss/
obj-$(CONFIG_SND_AOA) += aoa/
# This one must be compilable even if sound is configured out
---- /dev/null
-+++ b/sound/oss/at32_abdac.c
+diff --exclude=.git -urN linux-2.6.25.6/sound/oss/at32_abdac.c avr32-2.6/sound/oss/at32_abdac.c
+--- linux-2.6.25.6/sound/oss/at32_abdac.c 1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/sound/oss/at32_abdac.c 2008-06-12 15:09:47.027815755 +0200
@@ -0,0 +1,722 @@
+/*
+ * OSS Sound Driver for the Atmel AT32 on-chip DAC.
+MODULE_AUTHOR("Haavard Skinnemoen <hskinnemoen@atmel.com>");
+MODULE_DESCRIPTION("Sound Driver for the Atmel AT32 ABDAC");
+MODULE_LICENSE("GPL");
---- /dev/null
-+++ b/sound/oss/at32_abdac.h
+diff --exclude=.git -urN linux-2.6.25.6/sound/oss/at32_abdac.h avr32-2.6/sound/oss/at32_abdac.h
+--- linux-2.6.25.6/sound/oss/at32_abdac.h 1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/sound/oss/at32_abdac.h 2008-06-12 15:09:47.027815755 +0200
@@ -0,0 +1,59 @@
+/*
+ * Register definitions for the Atmel AT32 on-chip DAC.
+ __raw_writel((value), (port)->regs + DAC_##reg)
+
+#endif /* __SOUND_OSS_AT32_ABDAC_H__ */
---- a/sound/oss/Kconfig
-+++ b/sound/oss/Kconfig
+diff --exclude=.git -urN linux-2.6.25.6/sound/oss/Kconfig avr32-2.6/sound/oss/Kconfig
+--- linux-2.6.25.6/sound/oss/Kconfig 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/sound/oss/Kconfig 2008-06-12 15:09:47.023815804 +0200
@@ -654,3 +654,7 @@
int "DAC channel"
default "1"
+config SOUND_AT32_ABDAC
+ tristate "Atmel AT32 Audio Bitstream DAC (ABDAC) support"
+ depends on SOUND_PRIME && AVR32
---- a/sound/oss/Makefile
-+++ b/sound/oss/Makefile
-@@ -10,6 +10,7 @@
+diff --exclude=.git -urN linux-2.6.25.6/sound/oss/Makefile avr32-2.6/sound/oss/Makefile
+--- linux-2.6.25.6/sound/oss/Makefile 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/sound/oss/Makefile 2008-06-12 15:09:47.023815804 +0200
+@@ -9,6 +9,7 @@
# Please leave it as is, cause the link order is significant !
obj-$(CONFIG_SOUND_SH_DAC_AUDIO) += sh_dac_audio.o
obj-$(CONFIG_SOUND_HAL2) += hal2.o
obj-$(CONFIG_SOUND_AEDSP16) += aedsp16.o
---- a/sound/spi/at73c213.c
-+++ b/sound/spi/at73c213.c
-@@ -744,7 +744,7 @@
+diff --exclude=.git -urN linux-2.6.25.6/sound/spi/at73c213.c avr32-2.6/sound/spi/at73c213.c
+--- linux-2.6.25.6/sound/spi/at73c213.c 2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/sound/spi/at73c213.c 2008-06-12 15:09:47.247815006 +0200
+@@ -737,7 +737,7 @@
/*
* Device functions
*/
{
/*
* Continuous clock output.
-@@ -774,7 +774,7 @@
+@@ -767,7 +767,7 @@
return 0;
}
{
int retval;
unsigned char dac_ctrl = 0;
-@@ -939,7 +939,7 @@
+@@ -933,7 +933,7 @@
return retval;
}
projects / openwrt.git / commitdiff