X-Git-Url: https://git.rohieb.name/openwrt.git/blobdiff_plain/85b39abe7d82d9b6b3ee3c7bc9f9d94fbb65beff..dcb392448ba2c6660a0e0c85ff6f1389e9b382d4:/target/linux/ixp4xx/patches-2.6.24/200-npe_driver.patch diff --git a/target/linux/ixp4xx/patches-2.6.24/200-npe_driver.patch b/target/linux/ixp4xx/patches-2.6.24/200-npe_driver.patch index 8be7af7b5..97ff757e0 100644 --- a/target/linux/ixp4xx/patches-2.6.24/200-npe_driver.patch +++ b/target/linux/ixp4xx/patches-2.6.24/200-npe_driver.patch @@ -1,105 +1,37 @@ -diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c -index 4de432e..c4c810b 100644 ---- a/arch/arm/kernel/setup.c -+++ b/arch/arm/kernel/setup.c -@@ -61,6 +61,7 @@ extern int root_mountflags; - extern void _stext, _text, _etext, __data_start, _edata, _end; - - unsigned int processor_id; -+EXPORT_SYMBOL(processor_id); - unsigned int __machine_arch_type; - EXPORT_SYMBOL(__machine_arch_type); - -diff --git a/arch/arm/mach-ixp4xx/Kconfig b/arch/arm/mach-ixp4xx/Kconfig -index 61b2dfc..e774447 100644 ---- a/arch/arm/mach-ixp4xx/Kconfig -+++ b/arch/arm/mach-ixp4xx/Kconfig -@@ -189,6 +189,20 @@ config IXP4XX_INDIRECT_PCI - need to use the indirect method instead. If you don't know - what you need, leave this option unselected. - -+config IXP4XX_QMGR -+ tristate "IXP4xx Queue Manager support" -+ help -+ This driver supports IXP4xx built-in hardware queue manager -+ and is automatically selected by Ethernet and HSS drivers. +Index: linux-2.6.24.7/drivers/net/arm/Kconfig +=================================================================== +--- linux-2.6.24.7.orig/drivers/net/arm/Kconfig ++++ linux-2.6.24.7/drivers/net/arm/Kconfig +@@ -47,3 +47,13 @@ config EP93XX_ETH + help + This is a driver for the ethernet hardware included in EP93xx CPUs. + Say Y if you are building a kernel for EP93xx based devices. + -+config IXP4XX_NPE -+ tristate "IXP4xx Network Processor Engine support" -+ select HOTPLUG -+ select FW_LOADER ++config IXP4XX_ETH ++ tristate "IXP4xx Ethernet support" ++ depends on NET_ETHERNET && ARM && ARCH_IXP4XX ++ select IXP4XX_NPE ++ select IXP4XX_QMGR ++ select MII + help -+ This driver supports IXP4xx built-in network coprocessors -+ and is automatically selected by Ethernet and HSS drivers. -+ - endmenu - - endif -diff --git a/arch/arm/mach-ixp4xx/Makefile b/arch/arm/mach-ixp4xx/Makefile -index 77e00ad..4bb97e1 100644 ---- a/arch/arm/mach-ixp4xx/Makefile -+++ b/arch/arm/mach-ixp4xx/Makefile -@@ -30,3 +30,5 @@ obj-$(CONFIG_MACH_GATEWAY7001) += gateway7001-setup.o - obj-$(CONFIG_MACH_WG302V2) += wg302v2-setup.o - - obj-$(CONFIG_PCI) += $(obj-pci-$(CONFIG_PCI)) common-pci.o -+obj-$(CONFIG_IXP4XX_QMGR) += ixp4xx_qmgr.o -+obj-$(CONFIG_IXP4XX_NPE) += ixp4xx_npe.o -diff --git a/arch/arm/mach-ixp4xx/ixdp425-setup.c b/arch/arm/mach-ixp4xx/ixdp425-setup.c -index d5008d8..10b41c6 100644 ---- a/arch/arm/mach-ixp4xx/ixdp425-setup.c -+++ b/arch/arm/mach-ixp4xx/ixdp425-setup.c -@@ -177,6 +177,31 @@ static struct platform_device ixdp425_uart = { - .resource = ixdp425_uart_resources - }; - -+/* Built-in 10/100 Ethernet MAC interfaces */ -+static struct eth_plat_info ixdp425_plat_eth[] = { -+ { -+ .phy = 0, -+ .rxq = 3, -+ .txreadyq = 20, -+ }, { -+ .phy = 1, -+ .rxq = 4, -+ .txreadyq = 21, -+ } -+}; -+ -+static struct platform_device ixdp425_eth[] = { -+ { -+ .name = "ixp4xx_eth", -+ .id = IXP4XX_ETH_NPEB, -+ .dev.platform_data = ixdp425_plat_eth, -+ }, { -+ .name = "ixp4xx_eth", -+ .id = IXP4XX_ETH_NPEC, -+ .dev.platform_data = ixdp425_plat_eth + 1, -+ } -+}; -+ - static struct platform_device *ixdp425_devices[] __initdata = { - &ixdp425_i2c_controller, - &ixdp425_flash, -@@ -184,7 +209,9 @@ static struct platform_device *ixdp425_devices[] __initdata = { - defined(CONFIG_MTD_NAND_PLATFORM_MODULE) - &ixdp425_flash_nand, - #endif -- &ixdp425_uart -+ &ixdp425_uart, -+ &ixdp425_eth[0], -+ &ixdp425_eth[1], - }; - - static void __init ixdp425_init(void) -diff --git a/arch/arm/mach-ixp4xx/ixp4xx_npe.c b/arch/arm/mach-ixp4xx/ixp4xx_npe.c -new file mode 100644 -index 0000000..83c137e ++ Say Y here if you want to use built-in Ethernet ports ++ on IXP4xx processor. +Index: linux-2.6.24.7/drivers/net/arm/Makefile +=================================================================== +--- linux-2.6.24.7.orig/drivers/net/arm/Makefile ++++ linux-2.6.24.7/drivers/net/arm/Makefile +@@ -9,3 +9,4 @@ obj-$(CONFIG_ARM_ETHER3) += ether3.o + obj-$(CONFIG_ARM_ETHER1) += ether1.o + obj-$(CONFIG_ARM_AT91_ETHER) += at91_ether.o + obj-$(CONFIG_EP93XX_ETH) += ep93xx_eth.o ++obj-$(CONFIG_IXP4XX_ETH) += ixp4xx_eth.o +Index: linux-2.6.24.7/drivers/net/arm/ixp4xx_eth.c +=================================================================== --- /dev/null -+++ b/arch/arm/mach-ixp4xx/ixp4xx_npe.c -@@ -0,0 +1,741 @@ ++++ linux-2.6.24.7/drivers/net/arm/ixp4xx_eth.c +@@ -0,0 +1,1261 @@ +/* -+ * Intel IXP4xx Network Processor Engine driver for Linux ++ * Intel IXP4xx Ethernet driver for Linux + * + * Copyright (C) 2007 Krzysztof Halasa + * @@ -107,3777 +39,3929 @@ index 0000000..83c137e + * under the terms of version 2 of the GNU General Public License + * as published by the Free Software Foundation. + * -+ * The code is based on publicly available information: -+ * - Intel IXP4xx Developer's Manual and other e-papers -+ * - Intel IXP400 Access Library Software (BSD license) -+ * - previous works by Christian Hohnstaedt -+ * Thanks, Christian. ++ * Ethernet port config (0x00 is not present on IXP42X): ++ * ++ * logical port 0x00 0x10 0x20 ++ * NPE 0 (NPE-A) 1 (NPE-B) 2 (NPE-C) ++ * physical PortId 2 0 1 ++ * TX queue 23 24 25 ++ * RX-free queue 26 27 28 ++ * TX-done queue is always 31, per-port RX and TX-ready queues are configurable ++ * ++ * ++ * Queue entries: ++ * bits 0 -> 1 - NPE ID (RX and TX-done) ++ * bits 0 -> 2 - priority (TX, per 802.1D) ++ * bits 3 -> 4 - port ID (user-set?) ++ * bits 5 -> 31 - physical descriptor address + */ + +#include +#include -+#include ++#include ++#include +#include +#include -+#include -+#include ++#include ++#include +#include ++#include + -+#define DEBUG_MSG 0 -+#define DEBUG_FW 0 -+ -+#define NPE_COUNT 3 -+#define MAX_RETRIES 1000 /* microseconds */ -+#define NPE_42X_DATA_SIZE 0x800 /* in dwords */ -+#define NPE_46X_DATA_SIZE 0x1000 -+#define NPE_A_42X_INSTR_SIZE 0x1000 -+#define NPE_B_AND_C_42X_INSTR_SIZE 0x800 -+#define NPE_46X_INSTR_SIZE 0x1000 -+#define REGS_SIZE 0x1000 -+ -+#define NPE_PHYS_REG 32 ++#define DEBUG_QUEUES 0 ++#define DEBUG_DESC 0 ++#define DEBUG_RX 0 ++#define DEBUG_TX 0 ++#define DEBUG_PKT_BYTES 0 ++#define DEBUG_MDIO 0 ++#define DEBUG_CLOSE 0 + -+#define FW_MAGIC 0xFEEDF00D -+#define FW_BLOCK_TYPE_INSTR 0x0 -+#define FW_BLOCK_TYPE_DATA 0x1 -+#define FW_BLOCK_TYPE_EOF 0xF ++#define DRV_NAME "ixp4xx_eth" + -+/* NPE exec status (read) and command (write) */ -+#define CMD_NPE_STEP 0x01 -+#define CMD_NPE_START 0x02 -+#define CMD_NPE_STOP 0x03 -+#define CMD_NPE_CLR_PIPE 0x04 -+#define CMD_CLR_PROFILE_CNT 0x0C -+#define CMD_RD_INS_MEM 0x10 /* instruction memory */ -+#define CMD_WR_INS_MEM 0x11 -+#define CMD_RD_DATA_MEM 0x12 /* data memory */ -+#define CMD_WR_DATA_MEM 0x13 -+#define CMD_RD_ECS_REG 0x14 /* exec access register */ -+#define CMD_WR_ECS_REG 0x15 ++#define MAX_NPES 3 + -+#define STAT_RUN 0x80000000 -+#define STAT_STOP 0x40000000 -+#define STAT_CLEAR 0x20000000 -+#define STAT_ECS_K 0x00800000 /* pipeline clean */ ++#define RX_DESCS 64 /* also length of all RX queues */ ++#define TX_DESCS 16 /* also length of all TX queues */ ++#define TXDONE_QUEUE_LEN 64 /* dwords */ + -+#define NPE_STEVT 0x1B -+#define NPE_STARTPC 0x1C -+#define NPE_REGMAP 0x1E -+#define NPE_CINDEX 0x1F ++#define POOL_ALLOC_SIZE (sizeof(struct desc) * (RX_DESCS + TX_DESCS)) ++#define REGS_SIZE 0x1000 ++#define MAX_MRU 1536 /* 0x600 */ + -+#define INSTR_WR_REG_SHORT 0x0000C000 -+#define INSTR_WR_REG_BYTE 0x00004000 -+#define INSTR_RD_FIFO 0x0F888220 -+#define INSTR_RESET_MBOX 0x0FAC8210 ++#define MDIO_INTERVAL (3 * HZ) ++#define MAX_MDIO_RETRIES 100 /* microseconds, typically 30 cycles */ ++#define MAX_MII_RESET_RETRIES 100 /* mdio_read() cycles, typically 4 */ ++#define MAX_CLOSE_WAIT 1000 /* microseconds, typically 2-3 cycles */ + -+#define ECS_BG_CTXT_REG_0 0x00 /* Background Executing Context */ -+#define ECS_BG_CTXT_REG_1 0x01 /* Stack level */ -+#define ECS_BG_CTXT_REG_2 0x02 -+#define ECS_PRI_1_CTXT_REG_0 0x04 /* Priority 1 Executing Context */ -+#define ECS_PRI_1_CTXT_REG_1 0x05 /* Stack level */ -+#define ECS_PRI_1_CTXT_REG_2 0x06 -+#define ECS_PRI_2_CTXT_REG_0 0x08 /* Priority 2 Executing Context */ -+#define ECS_PRI_2_CTXT_REG_1 0x09 /* Stack level */ -+#define ECS_PRI_2_CTXT_REG_2 0x0A -+#define ECS_DBG_CTXT_REG_0 0x0C /* Debug Executing Context */ -+#define ECS_DBG_CTXT_REG_1 0x0D /* Stack level */ -+#define ECS_DBG_CTXT_REG_2 0x0E -+#define ECS_INSTRUCT_REG 0x11 /* NPE Instruction Register */ ++#define NPE_ID(port_id) ((port_id) >> 4) ++#define PHYSICAL_ID(port_id) ((NPE_ID(port_id) + 2) % 3) ++#define TX_QUEUE(port_id) (NPE_ID(port_id) + 23) ++#define RXFREE_QUEUE(port_id) (NPE_ID(port_id) + 26) ++#define TXDONE_QUEUE 31 + -+#define ECS_REG_0_ACTIVE 0x80000000 /* all levels */ -+#define ECS_REG_0_NEXTPC_MASK 0x1FFF0000 /* BG/PRI1/PRI2 levels */ -+#define ECS_REG_0_LDUR_BITS 8 -+#define ECS_REG_0_LDUR_MASK 0x00000700 /* all levels */ -+#define ECS_REG_1_CCTXT_BITS 16 -+#define ECS_REG_1_CCTXT_MASK 0x000F0000 /* all levels */ -+#define ECS_REG_1_SELCTXT_BITS 0 -+#define ECS_REG_1_SELCTXT_MASK 0x0000000F /* all levels */ -+#define ECS_DBG_REG_2_IF 0x00100000 /* debug level */ -+#define ECS_DBG_REG_2_IE 0x00080000 /* debug level */ ++#define ETH_NAPI_WEIGHT 16 + -+/* NPE watchpoint_fifo register bit */ -+#define WFIFO_VALID 0x80000000 ++/* TX Control Registers */ ++#define TX_CNTRL0_TX_EN 0x01 ++#define TX_CNTRL0_HALFDUPLEX 0x02 ++#define TX_CNTRL0_RETRY 0x04 ++#define TX_CNTRL0_PAD_EN 0x08 ++#define TX_CNTRL0_APPEND_FCS 0x10 ++#define TX_CNTRL0_2DEFER 0x20 ++#define TX_CNTRL0_RMII 0x40 /* reduced MII */ ++#define TX_CNTRL1_RETRIES 0x0F /* 4 bits */ + -+/* NPE messaging_status register bit definitions */ -+#define MSGSTAT_OFNE 0x00010000 /* OutFifoNotEmpty */ -+#define MSGSTAT_IFNF 0x00020000 /* InFifoNotFull */ -+#define MSGSTAT_OFNF 0x00040000 /* OutFifoNotFull */ -+#define MSGSTAT_IFNE 0x00080000 /* InFifoNotEmpty */ -+#define MSGSTAT_MBINT 0x00100000 /* Mailbox interrupt */ -+#define MSGSTAT_IFINT 0x00200000 /* InFifo interrupt */ -+#define MSGSTAT_OFINT 0x00400000 /* OutFifo interrupt */ -+#define MSGSTAT_WFINT 0x00800000 /* WatchFifo interrupt */ ++/* RX Control Registers */ ++#define RX_CNTRL0_RX_EN 0x01 ++#define RX_CNTRL0_PADSTRIP_EN 0x02 ++#define RX_CNTRL0_SEND_FCS 0x04 ++#define RX_CNTRL0_PAUSE_EN 0x08 ++#define RX_CNTRL0_LOOP_EN 0x10 ++#define RX_CNTRL0_ADDR_FLTR_EN 0x20 ++#define RX_CNTRL0_RX_RUNT_EN 0x40 ++#define RX_CNTRL0_BCAST_DIS 0x80 ++#define RX_CNTRL1_DEFER_EN 0x01 + -+/* NPE messaging_control register bit definitions */ -+#define MSGCTL_OUT_FIFO 0x00010000 /* enable output FIFO */ -+#define MSGCTL_IN_FIFO 0x00020000 /* enable input FIFO */ -+#define MSGCTL_OUT_FIFO_WRITE 0x01000000 /* enable FIFO + WRITE */ -+#define MSGCTL_IN_FIFO_WRITE 0x02000000 ++/* Core Control Register */ ++#define CORE_RESET 0x01 ++#define CORE_RX_FIFO_FLUSH 0x02 ++#define CORE_TX_FIFO_FLUSH 0x04 ++#define CORE_SEND_JAM 0x08 ++#define CORE_MDC_EN 0x10 /* MDIO using NPE-B ETH-0 only */ + -+/* NPE mailbox_status value for reset */ -+#define RESET_MBOX_STAT 0x0000F0F0 ++#define DEFAULT_TX_CNTRL0 (TX_CNTRL0_TX_EN | TX_CNTRL0_RETRY | \ ++ TX_CNTRL0_PAD_EN | TX_CNTRL0_APPEND_FCS | \ ++ TX_CNTRL0_2DEFER) ++#define DEFAULT_RX_CNTRL0 RX_CNTRL0_RX_EN ++#define DEFAULT_CORE_CNTRL CORE_MDC_EN + -+const char *npe_names[] = { "NPE-A", "NPE-B", "NPE-C" }; + -+#define print_npe(pri, npe, fmt, ...) \ -+ printk(pri "%s: " fmt, npe_name(npe), ## __VA_ARGS__) ++/* NPE message codes */ ++#define NPE_GETSTATUS 0x00 ++#define NPE_EDB_SETPORTADDRESS 0x01 ++#define NPE_EDB_GETMACADDRESSDATABASE 0x02 ++#define NPE_EDB_SETMACADDRESSSDATABASE 0x03 ++#define NPE_GETSTATS 0x04 ++#define NPE_RESETSTATS 0x05 ++#define NPE_SETMAXFRAMELENGTHS 0x06 ++#define NPE_VLAN_SETRXTAGMODE 0x07 ++#define NPE_VLAN_SETDEFAULTRXVID 0x08 ++#define NPE_VLAN_SETPORTVLANTABLEENTRY 0x09 ++#define NPE_VLAN_SETPORTVLANTABLERANGE 0x0A ++#define NPE_VLAN_SETRXQOSENTRY 0x0B ++#define NPE_VLAN_SETPORTIDEXTRACTIONMODE 0x0C ++#define NPE_STP_SETBLOCKINGSTATE 0x0D ++#define NPE_FW_SETFIREWALLMODE 0x0E ++#define NPE_PC_SETFRAMECONTROLDURATIONID 0x0F ++#define NPE_PC_SETAPMACTABLE 0x11 ++#define NPE_SETLOOPBACK_MODE 0x12 ++#define NPE_PC_SETBSSIDTABLE 0x13 ++#define NPE_ADDRESS_FILTER_CONFIG 0x14 ++#define NPE_APPENDFCSCONFIG 0x15 ++#define NPE_NOTIFY_MAC_RECOVERY_DONE 0x16 ++#define NPE_MAC_RECOVERY_START 0x17 + -+#if DEBUG_MSG -+#define debug_msg(npe, fmt, ...) \ -+ print_npe(KERN_DEBUG, npe, fmt, ## __VA_ARGS__) ++ ++#ifdef __ARMEB__ ++typedef struct sk_buff buffer_t; ++#define free_buffer dev_kfree_skb ++#define free_buffer_irq dev_kfree_skb_irq +#else -+#define debug_msg(npe, fmt, ...) ++typedef void buffer_t; ++#define free_buffer kfree ++#define free_buffer_irq kfree +#endif + -+static struct { -+ u32 reg, val; -+} ecs_reset[] = { -+ { ECS_BG_CTXT_REG_0, 0xA0000000 }, -+ { ECS_BG_CTXT_REG_1, 0x01000000 }, -+ { ECS_BG_CTXT_REG_2, 0x00008000 }, -+ { ECS_PRI_1_CTXT_REG_0, 0x20000080 }, -+ { ECS_PRI_1_CTXT_REG_1, 0x01000000 }, -+ { ECS_PRI_1_CTXT_REG_2, 0x00008000 }, -+ { ECS_PRI_2_CTXT_REG_0, 0x20000080 }, -+ { ECS_PRI_2_CTXT_REG_1, 0x01000000 }, -+ { ECS_PRI_2_CTXT_REG_2, 0x00008000 }, -+ { ECS_DBG_CTXT_REG_0, 0x20000000 }, -+ { ECS_DBG_CTXT_REG_1, 0x00000000 }, -+ { ECS_DBG_CTXT_REG_2, 0x001E0000 }, -+ { ECS_INSTRUCT_REG, 0x1003C00F }, ++struct eth_regs { ++ u32 tx_control[2], __res1[2]; /* 000 */ ++ u32 rx_control[2], __res2[2]; /* 010 */ ++ u32 random_seed, __res3[3]; /* 020 */ ++ u32 partial_empty_threshold, __res4; /* 030 */ ++ u32 partial_full_threshold, __res5; /* 038 */ ++ u32 tx_start_bytes, __res6[3]; /* 040 */ ++ u32 tx_deferral, rx_deferral,__res7[2]; /* 050 */ ++ u32 tx_2part_deferral[2], __res8[2]; /* 060 */ ++ u32 slot_time, __res9[3]; /* 070 */ ++ u32 mdio_command[4]; /* 080 */ ++ u32 mdio_status[4]; /* 090 */ ++ u32 mcast_mask[6], __res10[2]; /* 0A0 */ ++ u32 mcast_addr[6], __res11[2]; /* 0C0 */ ++ u32 int_clock_threshold, __res12[3]; /* 0E0 */ ++ u32 hw_addr[6], __res13[61]; /* 0F0 */ ++ u32 core_control; /* 1FC */ +}; + -+static struct npe npe_tab[NPE_COUNT] = { -+ { -+ .id = 0, -+ .regs = (struct npe_regs __iomem *)IXP4XX_NPEA_BASE_VIRT, -+ .regs_phys = IXP4XX_NPEA_BASE_PHYS, -+ }, { -+ .id = 1, -+ .regs = (struct npe_regs __iomem *)IXP4XX_NPEB_BASE_VIRT, -+ .regs_phys = IXP4XX_NPEB_BASE_PHYS, -+ }, { -+ .id = 2, -+ .regs = (struct npe_regs __iomem *)IXP4XX_NPEC_BASE_VIRT, -+ .regs_phys = IXP4XX_NPEC_BASE_PHYS, -+ } ++struct port { ++ struct resource *mem_res; ++ struct eth_regs __iomem *regs; ++ struct npe *npe; ++ struct net_device *netdev; ++ struct napi_struct napi; ++ struct net_device_stats stat; ++ struct mii_if_info mii; ++ struct delayed_work mdio_thread; ++ struct eth_plat_info *plat; ++ buffer_t *rx_buff_tab[RX_DESCS], *tx_buff_tab[TX_DESCS]; ++ struct desc *desc_tab; /* coherent */ ++ u32 desc_tab_phys; ++ int id; /* logical port ID */ ++ u16 mii_bmcr; +}; + -+int npe_running(struct npe *npe) -+{ -+ return (__raw_readl(&npe->regs->exec_status_cmd) & STAT_RUN) != 0; -+} ++/* NPE message structure */ ++struct msg { ++#ifdef __ARMEB__ ++ u8 cmd, eth_id, byte2, byte3; ++ u8 byte4, byte5, byte6, byte7; ++#else ++ u8 byte3, byte2, eth_id, cmd; ++ u8 byte7, byte6, byte5, byte4; ++#endif ++}; + -+static void npe_cmd_write(struct npe *npe, u32 addr, int cmd, u32 data) -+{ -+ __raw_writel(data, &npe->regs->exec_data); -+ __raw_writel(addr, &npe->regs->exec_addr); -+ __raw_writel(cmd, &npe->regs->exec_status_cmd); -+} ++/* Ethernet packet descriptor */ ++struct desc { ++ u32 next; /* pointer to next buffer, unused */ + -+static u32 npe_cmd_read(struct npe *npe, u32 addr, int cmd) -+{ -+ __raw_writel(addr, &npe->regs->exec_addr); -+ __raw_writel(cmd, &npe->regs->exec_status_cmd); -+ /* Iintroduce extra read cycles after issuing read command to NPE -+ so that we read the register after the NPE has updated it. -+ This is to overcome race condition between XScale and NPE */ -+ __raw_readl(&npe->regs->exec_data); -+ __raw_readl(&npe->regs->exec_data); -+ return __raw_readl(&npe->regs->exec_data); -+} ++#ifdef __ARMEB__ ++ u16 buf_len; /* buffer length */ ++ u16 pkt_len; /* packet length */ ++ u32 data; /* pointer to data buffer in RAM */ ++ u8 dest_id; ++ u8 src_id; ++ u16 flags; ++ u8 qos; ++ u8 padlen; ++ u16 vlan_tci; ++#else ++ u16 pkt_len; /* packet length */ ++ u16 buf_len; /* buffer length */ ++ u32 data; /* pointer to data buffer in RAM */ ++ u16 flags; ++ u8 src_id; ++ u8 dest_id; ++ u16 vlan_tci; ++ u8 padlen; ++ u8 qos; ++#endif + -+static void npe_clear_active(struct npe *npe, u32 reg) -+{ -+ u32 val = npe_cmd_read(npe, reg, CMD_RD_ECS_REG); -+ npe_cmd_write(npe, reg, CMD_WR_ECS_REG, val & ~ECS_REG_0_ACTIVE); -+} ++#ifdef __ARMEB__ ++ u8 dst_mac_0, dst_mac_1, dst_mac_2, dst_mac_3; ++ u8 dst_mac_4, dst_mac_5, src_mac_0, src_mac_1; ++ u8 src_mac_2, src_mac_3, src_mac_4, src_mac_5; ++#else ++ u8 dst_mac_3, dst_mac_2, dst_mac_1, dst_mac_0; ++ u8 src_mac_1, src_mac_0, dst_mac_5, dst_mac_4; ++ u8 src_mac_5, src_mac_4, src_mac_3, src_mac_2; ++#endif ++}; + -+static void npe_start(struct npe *npe) -+{ -+ /* ensure only Background Context Stack Level is active */ -+ npe_clear_active(npe, ECS_PRI_1_CTXT_REG_0); -+ npe_clear_active(npe, ECS_PRI_2_CTXT_REG_0); -+ npe_clear_active(npe, ECS_DBG_CTXT_REG_0); + -+ __raw_writel(CMD_NPE_CLR_PIPE, &npe->regs->exec_status_cmd); -+ __raw_writel(CMD_NPE_START, &npe->regs->exec_status_cmd); -+} ++#define rx_desc_phys(port, n) ((port)->desc_tab_phys + \ ++ (n) * sizeof(struct desc)) ++#define rx_desc_ptr(port, n) (&(port)->desc_tab[n]) + -+static void npe_stop(struct npe *npe) -+{ -+ __raw_writel(CMD_NPE_STOP, &npe->regs->exec_status_cmd); -+ __raw_writel(CMD_NPE_CLR_PIPE, &npe->regs->exec_status_cmd); /*FIXME?*/ -+} ++#define tx_desc_phys(port, n) ((port)->desc_tab_phys + \ ++ ((n) + RX_DESCS) * sizeof(struct desc)) ++#define tx_desc_ptr(port, n) (&(port)->desc_tab[(n) + RX_DESCS]) + -+static int __must_check npe_debug_instr(struct npe *npe, u32 instr, u32 ctx, -+ u32 ldur) ++#ifndef __ARMEB__ ++static inline void memcpy_swab32(u32 *dest, u32 *src, int cnt) +{ -+ u32 wc; + int i; ++ for (i = 0; i < cnt; i++) ++ dest[i] = swab32(src[i]); ++} ++#endif + -+ /* set the Active bit, and the LDUR, in the debug level */ -+ npe_cmd_write(npe, ECS_DBG_CTXT_REG_0, CMD_WR_ECS_REG, -+ ECS_REG_0_ACTIVE | (ldur << ECS_REG_0_LDUR_BITS)); -+ -+ /* set CCTXT at ECS DEBUG L3 to specify in which context to execute -+ the instruction, and set SELCTXT at ECS DEBUG Level to specify -+ which context store to access. -+ Debug ECS Level Reg 1 has form 0x000n000n, where n = context number -+ */ -+ npe_cmd_write(npe, ECS_DBG_CTXT_REG_1, CMD_WR_ECS_REG, -+ (ctx << ECS_REG_1_CCTXT_BITS) | -+ (ctx << ECS_REG_1_SELCTXT_BITS)); ++static spinlock_t mdio_lock; ++static struct eth_regs __iomem *mdio_regs; /* mdio command and status only */ ++static int ports_open; ++static struct port *npe_port_tab[MAX_NPES]; ++static struct dma_pool *dma_pool; + -+ /* clear the pipeline */ -+ __raw_writel(CMD_NPE_CLR_PIPE, &npe->regs->exec_status_cmd); + -+ /* load NPE instruction into the instruction register */ -+ npe_cmd_write(npe, ECS_INSTRUCT_REG, CMD_WR_ECS_REG, instr); ++static u16 mdio_cmd(struct net_device *dev, int phy_id, int location, ++ int write, u16 cmd) ++{ ++ int cycles = 0; + -+ /* we need this value later to wait for completion of NPE execution -+ step */ -+ wc = __raw_readl(&npe->regs->watch_count); ++ if (__raw_readl(&mdio_regs->mdio_command[3]) & 0x80) { ++ printk(KERN_ERR "%s: MII not ready to transmit\n", dev->name); ++ return 0; ++ } + -+ /* issue a Step One command via the Execution Control register */ -+ __raw_writel(CMD_NPE_STEP, &npe->regs->exec_status_cmd); ++ if (write) { ++ __raw_writel(cmd & 0xFF, &mdio_regs->mdio_command[0]); ++ __raw_writel(cmd >> 8, &mdio_regs->mdio_command[1]); ++ } ++ __raw_writel(((phy_id << 5) | location) & 0xFF, ++ &mdio_regs->mdio_command[2]); ++ __raw_writel((phy_id >> 3) | (write << 2) | 0x80 /* GO */, ++ &mdio_regs->mdio_command[3]); + -+ /* Watch Count register increments when NPE completes an instruction */ -+ for (i = 0; i < MAX_RETRIES; i++) { -+ if (wc != __raw_readl(&npe->regs->watch_count)) -+ return 0; ++ while ((cycles < MAX_MDIO_RETRIES) && ++ (__raw_readl(&mdio_regs->mdio_command[3]) & 0x80)) { + udelay(1); ++ cycles++; + } + -+ print_npe(KERN_ERR, npe, "reset: npe_debug_instr(): timeout\n"); -+ return -ETIMEDOUT; -+} ++ if (cycles == MAX_MDIO_RETRIES) { ++ printk(KERN_ERR "%s: MII write failed\n", dev->name); ++ return 0; ++ } + -+static int __must_check npe_logical_reg_write8(struct npe *npe, u32 addr, -+ u8 val, u32 ctx) -+{ -+ /* here we build the NPE assembler instruction: mov8 d0, #0 */ -+ u32 instr = INSTR_WR_REG_BYTE | /* OpCode */ -+ addr << 9 | /* base Operand */ -+ (val & 0x1F) << 4 | /* lower 5 bits to immediate data */ -+ (val & ~0x1F) << (18 - 5);/* higher 3 bits to CoProc instr. */ -+ return npe_debug_instr(npe, instr, ctx, 1); /* execute it */ -+} ++#if DEBUG_MDIO ++ printk(KERN_DEBUG "%s: mdio_cmd() took %i cycles\n", dev->name, ++ cycles); ++#endif + -+static int __must_check npe_logical_reg_write16(struct npe *npe, u32 addr, -+ u16 val, u32 ctx) -+{ -+ /* here we build the NPE assembler instruction: mov16 d0, #0 */ -+ u32 instr = INSTR_WR_REG_SHORT | /* OpCode */ -+ addr << 9 | /* base Operand */ -+ (val & 0x1F) << 4 | /* lower 5 bits to immediate data */ -+ (val & ~0x1F) << (18 - 5);/* higher 11 bits to CoProc instr. */ -+ return npe_debug_instr(npe, instr, ctx, 1); /* execute it */ -+} ++ if (write) ++ return 0; + -+static int __must_check npe_logical_reg_write32(struct npe *npe, u32 addr, -+ u32 val, u32 ctx) -+{ -+ /* write in 16 bit steps first the high and then the low value */ -+ if (npe_logical_reg_write16(npe, addr, val >> 16, ctx)) -+ return -ETIMEDOUT; -+ return npe_logical_reg_write16(npe, addr + 2, val & 0xFFFF, ctx); ++ if (__raw_readl(&mdio_regs->mdio_status[3]) & 0x80) { ++ printk(KERN_ERR "%s: MII read failed\n", dev->name); ++ return 0; ++ } ++ ++ return (__raw_readl(&mdio_regs->mdio_status[0]) & 0xFF) | ++ (__raw_readl(&mdio_regs->mdio_status[1]) << 8); +} + -+static int npe_reset(struct npe *npe) ++static int mdio_read(struct net_device *dev, int phy_id, int location) +{ -+ u32 val, ctl, exec_count, ctx_reg2; -+ int i; -+ -+ ctl = (__raw_readl(&npe->regs->messaging_control) | 0x3F000000) & -+ 0x3F3FFFFF; -+ -+ /* disable parity interrupt */ -+ __raw_writel(ctl & 0x3F00FFFF, &npe->regs->messaging_control); -+ -+ /* pre exec - debug instruction */ -+ /* turn off the halt bit by clearing Execution Count register. */ -+ exec_count = __raw_readl(&npe->regs->exec_count); -+ __raw_writel(0, &npe->regs->exec_count); -+ /* ensure that IF and IE are on (temporarily), so that we don't end up -+ stepping forever */ -+ ctx_reg2 = npe_cmd_read(npe, ECS_DBG_CTXT_REG_2, CMD_RD_ECS_REG); -+ npe_cmd_write(npe, ECS_DBG_CTXT_REG_2, CMD_WR_ECS_REG, ctx_reg2 | -+ ECS_DBG_REG_2_IF | ECS_DBG_REG_2_IE); -+ -+ /* clear the FIFOs */ -+ while (__raw_readl(&npe->regs->watchpoint_fifo) & WFIFO_VALID) -+ ; -+ while (__raw_readl(&npe->regs->messaging_status) & MSGSTAT_OFNE) -+ /* read from the outFIFO until empty */ -+ print_npe(KERN_DEBUG, npe, "npe_reset: read FIFO = 0x%X\n", -+ __raw_readl(&npe->regs->in_out_fifo)); -+ -+ while (__raw_readl(&npe->regs->messaging_status) & MSGSTAT_IFNE) -+ /* step execution of the NPE intruction to read inFIFO using -+ the Debug Executing Context stack */ -+ if (npe_debug_instr(npe, INSTR_RD_FIFO, 0, 0)) -+ return -ETIMEDOUT; ++ unsigned long flags; ++ u16 val; + -+ /* reset the mailbox reg from the XScale side */ -+ __raw_writel(RESET_MBOX_STAT, &npe->regs->mailbox_status); -+ /* from NPE side */ -+ if (npe_debug_instr(npe, INSTR_RESET_MBOX, 0, 0)) -+ return -ETIMEDOUT; ++ spin_lock_irqsave(&mdio_lock, flags); ++ val = mdio_cmd(dev, phy_id, location, 0, 0); ++ spin_unlock_irqrestore(&mdio_lock, flags); ++ return val; ++} + -+ /* Reset the physical registers in the NPE register file */ -+ for (val = 0; val < NPE_PHYS_REG; val++) { -+ if (npe_logical_reg_write16(npe, NPE_REGMAP, val >> 1, 0)) -+ return -ETIMEDOUT; -+ /* address is either 0 or 4 */ -+ if (npe_logical_reg_write32(npe, (val & 1) * 4, 0, 0)) -+ return -ETIMEDOUT; -+ } ++static void mdio_write(struct net_device *dev, int phy_id, int location, ++ int val) ++{ ++ unsigned long flags; + -+ /* Reset the context store = each context's Context Store registers */ ++ spin_lock_irqsave(&mdio_lock, flags); ++ mdio_cmd(dev, phy_id, location, 1, val); ++ spin_unlock_irqrestore(&mdio_lock, flags); ++} + -+ /* Context 0 has no STARTPC. Instead, this value is used to set NextPC -+ for Background ECS, to set where NPE starts executing code */ -+ val = npe_cmd_read(npe, ECS_BG_CTXT_REG_0, CMD_RD_ECS_REG); -+ val &= ~ECS_REG_0_NEXTPC_MASK; -+ val |= (0 /* NextPC */ << 16) & ECS_REG_0_NEXTPC_MASK; -+ npe_cmd_write(npe, ECS_BG_CTXT_REG_0, CMD_WR_ECS_REG, val); ++static void phy_reset(struct net_device *dev, int phy_id) ++{ ++ struct port *port = netdev_priv(dev); ++ int cycles = 0; + -+ for (i = 0; i < 16; i++) { -+ if (i) { /* Context 0 has no STEVT nor STARTPC */ -+ /* STEVT = off, 0x80 */ -+ if (npe_logical_reg_write8(npe, NPE_STEVT, 0x80, i)) -+ return -ETIMEDOUT; -+ if (npe_logical_reg_write16(npe, NPE_STARTPC, 0, i)) -+ return -ETIMEDOUT; ++ mdio_write(dev, phy_id, MII_BMCR, port->mii_bmcr | BMCR_RESET); ++ ++ while (cycles < MAX_MII_RESET_RETRIES) { ++ if (!(mdio_read(dev, phy_id, MII_BMCR) & BMCR_RESET)) { ++#if DEBUG_MDIO ++ printk(KERN_DEBUG "%s: phy_reset() took %i cycles\n", ++ dev->name, cycles); ++#endif ++ return; + } -+ /* REGMAP = d0->p0, d8->p2, d16->p4 */ -+ if (npe_logical_reg_write16(npe, NPE_REGMAP, 0x820, i)) -+ return -ETIMEDOUT; -+ if (npe_logical_reg_write8(npe, NPE_CINDEX, 0, i)) -+ return -ETIMEDOUT; ++ udelay(1); ++ cycles++; + } + -+ /* post exec */ -+ /* clear active bit in debug level */ -+ npe_cmd_write(npe, ECS_DBG_CTXT_REG_0, CMD_WR_ECS_REG, 0); -+ /* clear the pipeline */ -+ __raw_writel(CMD_NPE_CLR_PIPE, &npe->regs->exec_status_cmd); -+ /* restore previous values */ -+ __raw_writel(exec_count, &npe->regs->exec_count); -+ npe_cmd_write(npe, ECS_DBG_CTXT_REG_2, CMD_WR_ECS_REG, ctx_reg2); ++ printk(KERN_ERR "%s: MII reset failed\n", dev->name); ++} + -+ /* write reset values to Execution Context Stack registers */ -+ for (val = 0; val < ARRAY_SIZE(ecs_reset); val++) -+ npe_cmd_write(npe, ecs_reset[val].reg, CMD_WR_ECS_REG, -+ ecs_reset[val].val); ++static void eth_set_duplex(struct port *port) ++{ ++ if (port->mii.full_duplex) ++ __raw_writel(DEFAULT_TX_CNTRL0 & ~TX_CNTRL0_HALFDUPLEX, ++ &port->regs->tx_control[0]); ++ else ++ __raw_writel(DEFAULT_TX_CNTRL0 | TX_CNTRL0_HALFDUPLEX, ++ &port->regs->tx_control[0]); ++} + -+ /* clear the profile counter */ -+ __raw_writel(CMD_CLR_PROFILE_CNT, &npe->regs->exec_status_cmd); + -+ __raw_writel(0, &npe->regs->exec_count); -+ __raw_writel(0, &npe->regs->action_points[0]); -+ __raw_writel(0, &npe->regs->action_points[1]); -+ __raw_writel(0, &npe->regs->action_points[2]); -+ __raw_writel(0, &npe->regs->action_points[3]); -+ __raw_writel(0, &npe->regs->watch_count); ++static void phy_check_media(struct port *port, int init) ++{ ++ if (mii_check_media(&port->mii, 1, init)) ++ eth_set_duplex(port); ++ if (port->mii.force_media) { /* mii_check_media() doesn't work */ ++ struct net_device *dev = port->netdev; ++ int cur_link = mii_link_ok(&port->mii); ++ int prev_link = netif_carrier_ok(dev); + -+ val = ixp4xx_read_feature_bits(); -+ /* reset the NPE */ -+ ixp4xx_write_feature_bits(val & -+ ~(IXP4XX_FEATURE_RESET_NPEA << npe->id)); -+ for (i = 0; i < MAX_RETRIES; i++) { -+ if (!(ixp4xx_read_feature_bits() & -+ (IXP4XX_FEATURE_RESET_NPEA << npe->id))) -+ break; /* reset completed */ -+ udelay(1); ++ if (!prev_link && cur_link) { ++ printk(KERN_INFO "%s: link up\n", dev->name); ++ netif_carrier_on(dev); ++ } else if (prev_link && !cur_link) { ++ printk(KERN_INFO "%s: link down\n", dev->name); ++ netif_carrier_off(dev); ++ } + } -+ if (i == MAX_RETRIES) -+ return -ETIMEDOUT; ++} + -+ /* deassert reset */ -+ ixp4xx_write_feature_bits(val | -+ (IXP4XX_FEATURE_RESET_NPEA << npe->id)); -+ for (i = 0; i < MAX_RETRIES; i++) { -+ if (ixp4xx_read_feature_bits() & -+ (IXP4XX_FEATURE_RESET_NPEA << npe->id)) -+ break; /* NPE is back alive */ -+ udelay(1); -+ } -+ if (i == MAX_RETRIES) -+ return -ETIMEDOUT; + -+ npe_stop(npe); ++static void mdio_thread(struct work_struct *work) ++{ ++ struct port *port = container_of(work, struct port, mdio_thread.work); + -+ /* restore NPE configuration bus Control Register - parity settings */ -+ __raw_writel(ctl, &npe->regs->messaging_control); -+ return 0; ++ phy_check_media(port, 0); ++ schedule_delayed_work(&port->mdio_thread, MDIO_INTERVAL); +} + + -+int npe_send_message(struct npe *npe, const void *msg, const char *what) ++static inline void debug_pkt(struct net_device *dev, const char *func, ++ u8 *data, int len) +{ -+ const u32 *send = msg; -+ int cycles = 0; -+ -+ debug_msg(npe, "Trying to send message %s [%08X:%08X]\n", -+ what, send[0], send[1]); ++#if DEBUG_PKT_BYTES ++ int i; + -+ if (__raw_readl(&npe->regs->messaging_status) & MSGSTAT_IFNE) { -+ debug_msg(npe, "NPE input FIFO not empty\n"); -+ return -EIO; ++ printk(KERN_DEBUG "%s: %s(%i) ", dev->name, func, len); ++ for (i = 0; i < len; i++) { ++ if (i >= DEBUG_PKT_BYTES) ++ break; ++ printk("%s%02X", ++ ((i == 6) || (i == 12) || (i >= 14)) ? " " : "", ++ data[i]); + } ++ printk("\n"); ++#endif ++} + -+ __raw_writel(send[0], &npe->regs->in_out_fifo); -+ -+ if (!(__raw_readl(&npe->regs->messaging_status) & MSGSTAT_IFNF)) { -+ debug_msg(npe, "NPE input FIFO full\n"); -+ return -EIO; -+ } + -+ __raw_writel(send[1], &npe->regs->in_out_fifo); ++static inline void debug_desc(u32 phys, struct desc *desc) ++{ ++#if DEBUG_DESC ++ printk(KERN_DEBUG "%X: %X %3X %3X %08X %2X < %2X %4X %X" ++ " %X %X %02X%02X%02X%02X%02X%02X < %02X%02X%02X%02X%02X%02X\n", ++ phys, desc->next, desc->buf_len, desc->pkt_len, ++ desc->data, desc->dest_id, desc->src_id, desc->flags, ++ desc->qos, desc->padlen, desc->vlan_tci, ++ desc->dst_mac_0, desc->dst_mac_1, desc->dst_mac_2, ++ desc->dst_mac_3, desc->dst_mac_4, desc->dst_mac_5, ++ desc->src_mac_0, desc->src_mac_1, desc->src_mac_2, ++ desc->src_mac_3, desc->src_mac_4, desc->src_mac_5); ++#endif ++} + -+ while ((cycles < MAX_RETRIES) && -+ (__raw_readl(&npe->regs->messaging_status) & MSGSTAT_IFNE)) { -+ udelay(1); -+ cycles++; -+ } ++static inline void debug_queue(unsigned int queue, int is_get, u32 phys) ++{ ++#if DEBUG_QUEUES ++ static struct { ++ int queue; ++ char *name; ++ } names[] = { ++ { TX_QUEUE(0x10), "TX#0 " }, ++ { TX_QUEUE(0x20), "TX#1 " }, ++ { TX_QUEUE(0x00), "TX#2 " }, ++ { RXFREE_QUEUE(0x10), "RX-free#0 " }, ++ { RXFREE_QUEUE(0x20), "RX-free#1 " }, ++ { RXFREE_QUEUE(0x00), "RX-free#2 " }, ++ { TXDONE_QUEUE, "TX-done " }, ++ }; ++ int i; + -+ if (cycles == MAX_RETRIES) { -+ debug_msg(npe, "Timeout sending message\n"); -+ return -ETIMEDOUT; -+ } ++ for (i = 0; i < ARRAY_SIZE(names); i++) ++ if (names[i].queue == queue) ++ break; + -+ debug_msg(npe, "Sending a message took %i cycles\n", cycles); -+ return 0; ++ printk(KERN_DEBUG "Queue %i %s%s %X\n", queue, ++ i < ARRAY_SIZE(names) ? names[i].name : "", ++ is_get ? "->" : "<-", phys); ++#endif +} + -+int npe_recv_message(struct npe *npe, void *msg, const char *what) ++static inline u32 queue_get_entry(unsigned int queue) +{ -+ u32 *recv = msg; -+ int cycles = 0, cnt = 0; -+ -+ debug_msg(npe, "Trying to receive message %s\n", what); -+ -+ while (cycles < MAX_RETRIES) { -+ if (__raw_readl(&npe->regs->messaging_status) & MSGSTAT_OFNE) { -+ recv[cnt++] = __raw_readl(&npe->regs->in_out_fifo); -+ if (cnt == 2) -+ break; -+ } else { -+ udelay(1); -+ cycles++; -+ } -+ } ++ u32 phys = qmgr_get_entry(queue); ++ debug_queue(queue, 1, phys); ++ return phys; ++} + -+ switch(cnt) { -+ case 1: -+ debug_msg(npe, "Received [%08X]\n", recv[0]); -+ break; -+ case 2: -+ debug_msg(npe, "Received [%08X:%08X]\n", recv[0], recv[1]); -+ break; -+ } ++static inline int queue_get_desc(unsigned int queue, struct port *port, ++ int is_tx) ++{ ++ u32 phys, tab_phys, n_desc; ++ struct desc *tab; + -+ if (cycles == MAX_RETRIES) { -+ debug_msg(npe, "Timeout waiting for message\n"); -+ return -ETIMEDOUT; -+ } ++ if (!(phys = queue_get_entry(queue))) ++ return -1; + -+ debug_msg(npe, "Receiving a message took %i cycles\n", cycles); -+ return 0; ++ phys &= ~0x1F; /* mask out non-address bits */ ++ tab_phys = is_tx ? tx_desc_phys(port, 0) : rx_desc_phys(port, 0); ++ tab = is_tx ? tx_desc_ptr(port, 0) : rx_desc_ptr(port, 0); ++ n_desc = (phys - tab_phys) / sizeof(struct desc); ++ BUG_ON(n_desc >= (is_tx ? TX_DESCS : RX_DESCS)); ++ debug_desc(phys, &tab[n_desc]); ++ BUG_ON(tab[n_desc].next); ++ return n_desc; +} + -+int npe_send_recv_message(struct npe *npe, void *msg, const char *what) ++static inline void queue_put_desc(unsigned int queue, u32 phys, ++ struct desc *desc) +{ -+ int result; -+ u32 *send = msg, recv[2]; ++ debug_queue(queue, 0, phys); ++ debug_desc(phys, desc); ++ BUG_ON(phys & 0x1F); ++ qmgr_put_entry(queue, phys); ++ BUG_ON(qmgr_stat_overflow(queue)); ++} + -+ if ((result = npe_send_message(npe, msg, what)) != 0) -+ return result; -+ if ((result = npe_recv_message(npe, recv, what)) != 0) -+ return result; + -+ if ((recv[0] != send[0]) || (recv[1] != send[1])) { -+ debug_msg(npe, "Message %s: unexpected message received\n", -+ what); -+ return -EIO; -+ } -+ return 0; ++static inline void dma_unmap_tx(struct port *port, struct desc *desc) ++{ ++#ifdef __ARMEB__ ++ dma_unmap_single(&port->netdev->dev, desc->data, ++ desc->buf_len, DMA_TO_DEVICE); ++#else ++ dma_unmap_single(&port->netdev->dev, desc->data & ~3, ++ ALIGN((desc->data & 3) + desc->buf_len, 4), ++ DMA_TO_DEVICE); ++#endif +} + + -+int npe_load_firmware(struct npe *npe, const char *name, struct device *dev) ++static void eth_rx_irq(void *pdev) +{ -+ const struct firmware *fw_entry; ++ struct net_device *dev = pdev; ++ struct port *port = netdev_priv(dev); + -+ struct dl_block { -+ u32 type; -+ u32 offset; -+ } *blk; ++#if DEBUG_RX ++ printk(KERN_DEBUG "%s: eth_rx_irq\n", dev->name); ++#endif ++ qmgr_disable_irq(port->plat->rxq); ++ netif_rx_schedule(dev, &port->napi); ++} + -+ struct dl_image { -+ u32 magic; -+ u32 id; -+ u32 size; -+ union { -+ u32 data[0]; -+ struct dl_block blocks[0]; -+ }; -+ } *image; ++static int eth_poll(struct napi_struct *napi, int budget) ++{ ++ struct port *port = container_of(napi, struct port, napi); ++ struct net_device *dev = port->netdev; ++ unsigned int rxq = port->plat->rxq, rxfreeq = RXFREE_QUEUE(port->id); ++ int received = 0; + -+ struct dl_codeblock { -+ u32 npe_addr; -+ u32 size; -+ u32 data[0]; -+ } *cb; ++#if DEBUG_RX ++ printk(KERN_DEBUG "%s: eth_poll\n", dev->name); ++#endif + -+ int i, j, err, data_size, instr_size, blocks, table_end; -+ u32 cmd; ++ while (received < budget) { ++ struct sk_buff *skb; ++ struct desc *desc; ++ int n; ++#ifdef __ARMEB__ ++ struct sk_buff *temp; ++ u32 phys; ++#endif + -+ if ((err = request_firmware(&fw_entry, name, dev)) != 0) -+ return err; ++ if ((n = queue_get_desc(rxq, port, 0)) < 0) { ++ received = 0; /* No packet received */ ++#if DEBUG_RX ++ printk(KERN_DEBUG "%s: eth_poll netif_rx_complete\n", ++ dev->name); ++#endif ++ netif_rx_complete(dev, &port->napi); ++ qmgr_enable_irq(rxq); ++ if (!qmgr_stat_empty(rxq) && ++ netif_rx_reschedule(dev, &port->napi)) { ++#if DEBUG_RX ++ printk(KERN_DEBUG "%s: eth_poll" ++ " netif_rx_reschedule successed\n", ++ dev->name); ++#endif ++ qmgr_disable_irq(rxq); ++ continue; ++ } ++#if DEBUG_RX ++ printk(KERN_DEBUG "%s: eth_poll all done\n", ++ dev->name); ++#endif ++ return 0; /* all work done */ ++ } + -+ err = -EINVAL; -+ if (fw_entry->size < sizeof(struct dl_image)) { -+ print_npe(KERN_ERR, npe, "incomplete firmware file\n"); -+ goto err; -+ } -+ image = (struct dl_image*)fw_entry->data; ++ desc = rx_desc_ptr(port, n); + -+#if DEBUG_FW -+ print_npe(KERN_DEBUG, npe, "firmware: %08X %08X %08X (0x%X bytes)\n", -+ image->magic, image->id, image->size, image->size * 4); ++#ifdef __ARMEB__ ++ if ((skb = netdev_alloc_skb(dev, MAX_MRU)) != NULL) { ++ phys = dma_map_single(&dev->dev, skb->data, ++ MAX_MRU, DMA_FROM_DEVICE); ++ if (dma_mapping_error(phys)) { ++ dev_kfree_skb(skb); ++ skb = NULL; ++ } ++ } ++#else ++ skb = netdev_alloc_skb(dev, desc->pkt_len); +#endif + -+ if (image->magic == swab32(FW_MAGIC)) { /* swapped file */ -+ image->id = swab32(image->id); -+ image->size = swab32(image->size); -+ } else if (image->magic != FW_MAGIC) { -+ print_npe(KERN_ERR, npe, "bad firmware file magic: 0x%X\n", -+ image->magic); -+ goto err; -+ } -+ if ((image->size * 4 + sizeof(struct dl_image)) != fw_entry->size) { -+ print_npe(KERN_ERR, npe, -+ "inconsistent size of firmware file\n"); -+ goto err; -+ } -+ if (((image->id >> 24) & 0xF /* NPE ID */) != npe->id) { -+ print_npe(KERN_ERR, npe, "firmware file NPE ID mismatch\n"); -+ goto err; -+ } -+ if (image->magic == swab32(FW_MAGIC)) -+ for (i = 0; i < image->size; i++) -+ image->data[i] = swab32(image->data[i]); -+ -+ if (!cpu_is_ixp46x() && ((image->id >> 28) & 0xF /* device ID */)) { -+ print_npe(KERN_INFO, npe, "IXP46x firmware ignored on " -+ "IXP42x\n"); -+ goto err; -+ } ++ if (!skb) { ++ port->stat.rx_dropped++; ++ /* put the desc back on RX-ready queue */ ++ desc->buf_len = MAX_MRU; ++ desc->pkt_len = 0; ++ queue_put_desc(rxfreeq, rx_desc_phys(port, n), desc); ++ continue; ++ } + -+ if (npe_running(npe)) { -+ print_npe(KERN_INFO, npe, "unable to load firmware, NPE is " -+ "already running\n"); -+ err = -EBUSY; -+ goto err; -+ } -+#if 0 -+ npe_stop(npe); -+ npe_reset(npe); ++ /* process received frame */ ++#ifdef __ARMEB__ ++ temp = skb; ++ skb = port->rx_buff_tab[n]; ++ dma_unmap_single(&dev->dev, desc->data, ++ MAX_MRU, DMA_FROM_DEVICE); ++#else ++ dma_sync_single(&dev->dev, desc->data, ++ MAX_MRU, DMA_FROM_DEVICE); ++ memcpy_swab32((u32 *)skb->data, (u32 *)port->rx_buff_tab[n], ++ ALIGN(desc->pkt_len, 4) / 4); +#endif ++ skb_put(skb, desc->pkt_len); + -+ print_npe(KERN_INFO, npe, "firmware functionality 0x%X, " -+ "revision 0x%X:%X\n", (image->id >> 16) & 0xFF, -+ (image->id >> 8) & 0xFF, image->id & 0xFF); ++ debug_pkt(dev, "eth_poll", skb->data, skb->len); + -+ if (!cpu_is_ixp46x()) { -+ if (!npe->id) -+ instr_size = NPE_A_42X_INSTR_SIZE; -+ else -+ instr_size = NPE_B_AND_C_42X_INSTR_SIZE; -+ data_size = NPE_42X_DATA_SIZE; -+ } else { -+ instr_size = NPE_46X_INSTR_SIZE; -+ data_size = NPE_46X_DATA_SIZE; -+ } ++ skb->protocol = eth_type_trans(skb, dev); ++ dev->last_rx = jiffies; ++ port->stat.rx_packets++; ++ port->stat.rx_bytes += skb->len; ++ netif_receive_skb(skb); + -+ for (blocks = 0; blocks * sizeof(struct dl_block) / 4 < image->size; -+ blocks++) -+ if (image->blocks[blocks].type == FW_BLOCK_TYPE_EOF) -+ break; -+ if (blocks * sizeof(struct dl_block) / 4 >= image->size) { -+ print_npe(KERN_INFO, npe, "firmware EOF block marker not " -+ "found\n"); -+ goto err; ++ /* put the new buffer on RX-free queue */ ++#ifdef __ARMEB__ ++ port->rx_buff_tab[n] = temp; ++ desc->data = phys; ++#endif ++ desc->buf_len = MAX_MRU; ++ desc->pkt_len = 0; ++ queue_put_desc(rxfreeq, rx_desc_phys(port, n), desc); ++ received++; + } + -+#if DEBUG_FW -+ print_npe(KERN_DEBUG, npe, "%i firmware blocks found\n", blocks); ++#if DEBUG_RX ++ printk(KERN_DEBUG "eth_poll(): end, not all work done\n"); +#endif ++ return received; /* not all work done */ ++} + -+ table_end = blocks * sizeof(struct dl_block) / 4 + 1 /* EOF marker */; -+ for (i = 0, blk = image->blocks; i < blocks; i++, blk++) { -+ if (blk->offset > image->size - sizeof(struct dl_codeblock) / 4 -+ || blk->offset < table_end) { -+ print_npe(KERN_INFO, npe, "invalid offset 0x%X of " -+ "firmware block #%i\n", blk->offset, i); -+ goto err; -+ } + -+ cb = (struct dl_codeblock*)&image->data[blk->offset]; -+ if (blk->type == FW_BLOCK_TYPE_INSTR) { -+ if (cb->npe_addr + cb->size > instr_size) -+ goto too_big; -+ cmd = CMD_WR_INS_MEM; -+ } else if (blk->type == FW_BLOCK_TYPE_DATA) { -+ if (cb->npe_addr + cb->size > data_size) -+ goto too_big; -+ cmd = CMD_WR_DATA_MEM; -+ } else { -+ print_npe(KERN_INFO, npe, "invalid firmware block #%i " -+ "type 0x%X\n", i, blk->type); -+ goto err; -+ } -+ if (blk->offset + sizeof(*cb) / 4 + cb->size > image->size) { -+ print_npe(KERN_INFO, npe, "firmware block #%i doesn't " -+ "fit in firmware image: type %c, start 0x%X," -+ " length 0x%X\n", i, -+ blk->type == FW_BLOCK_TYPE_INSTR ? 'I' : 'D', -+ cb->npe_addr, cb->size); -+ goto err; -+ } ++static void eth_txdone_irq(void *unused) ++{ ++ u32 phys; + -+ for (j = 0; j < cb->size; j++) -+ npe_cmd_write(npe, cb->npe_addr + j, cmd, cb->data[j]); -+ } ++#if DEBUG_TX ++ printk(KERN_DEBUG DRV_NAME ": eth_txdone_irq\n"); ++#endif ++ while ((phys = queue_get_entry(TXDONE_QUEUE)) != 0) { ++ u32 npe_id, n_desc; ++ struct port *port; ++ struct desc *desc; ++ int start; + -+ npe_start(npe); -+ if (!npe_running(npe)) -+ print_npe(KERN_ERR, npe, "unable to start\n"); -+ release_firmware(fw_entry); -+ return 0; ++ npe_id = phys & 3; ++ BUG_ON(npe_id >= MAX_NPES); ++ port = npe_port_tab[npe_id]; ++ BUG_ON(!port); ++ phys &= ~0x1F; /* mask out non-address bits */ ++ n_desc = (phys - tx_desc_phys(port, 0)) / sizeof(struct desc); ++ BUG_ON(n_desc >= TX_DESCS); ++ desc = tx_desc_ptr(port, n_desc); ++ debug_desc(phys, desc); + -+too_big: -+ print_npe(KERN_INFO, npe, "firmware block #%i doesn't fit in NPE " -+ "memory: type %c, start 0x%X, length 0x%X\n", i, -+ blk->type == FW_BLOCK_TYPE_INSTR ? 'I' : 'D', -+ cb->npe_addr, cb->size); -+err: -+ release_firmware(fw_entry); -+ return err; -+} ++ if (port->tx_buff_tab[n_desc]) { /* not the draining packet */ ++ port->stat.tx_packets++; ++ port->stat.tx_bytes += desc->pkt_len; + ++ dma_unmap_tx(port, desc); ++#if DEBUG_TX ++ printk(KERN_DEBUG "%s: eth_txdone_irq free %p\n", ++ port->netdev->name, port->tx_buff_tab[n_desc]); ++#endif ++ free_buffer_irq(port->tx_buff_tab[n_desc]); ++ port->tx_buff_tab[n_desc] = NULL; ++ } + -+struct npe *npe_request(int id) -+{ -+ if (id < NPE_COUNT) -+ if (npe_tab[id].valid) -+ if (try_module_get(THIS_MODULE)) -+ return &npe_tab[id]; -+ return NULL; ++ start = qmgr_stat_empty(port->plat->txreadyq); ++ queue_put_desc(port->plat->txreadyq, phys, desc); ++ if (start) { ++#if DEBUG_TX ++ printk(KERN_DEBUG "%s: eth_txdone_irq xmit ready\n", ++ port->netdev->name); ++#endif ++ netif_wake_queue(port->netdev); ++ } ++ } +} + -+void npe_release(struct npe *npe) ++static int eth_xmit(struct sk_buff *skb, struct net_device *dev) +{ -+ module_put(THIS_MODULE); -+} ++ struct port *port = netdev_priv(dev); ++ unsigned int txreadyq = port->plat->txreadyq; ++ int len, offset, bytes, n; ++ void *mem; ++ u32 phys; ++ struct desc *desc; + ++#if DEBUG_TX ++ printk(KERN_DEBUG "%s: eth_xmit\n", dev->name); ++#endif + -+static int __init npe_init_module(void) -+{ ++ if (unlikely(skb->len > MAX_MRU)) { ++ dev_kfree_skb(skb); ++ port->stat.tx_errors++; ++ return NETDEV_TX_OK; ++ } + -+ int i, found = 0; ++ debug_pkt(dev, "eth_xmit", skb->data, skb->len); + -+ for (i = 0; i < NPE_COUNT; i++) { -+ struct npe *npe = &npe_tab[i]; -+ if (!(ixp4xx_read_feature_bits() & -+ (IXP4XX_FEATURE_RESET_NPEA << i))) -+ continue; /* NPE already disabled or not present */ -+ if (!(npe->mem_res = request_mem_region(npe->regs_phys, -+ REGS_SIZE, -+ npe_name(npe)))) { -+ print_npe(KERN_ERR, npe, -+ "failed to request memory region\n"); -+ continue; -+ } ++ len = skb->len; ++#ifdef __ARMEB__ ++ offset = 0; /* no need to keep alignment */ ++ bytes = len; ++ mem = skb->data; ++#else ++ offset = (int)skb->data & 3; /* keep 32-bit alignment */ ++ bytes = ALIGN(offset + len, 4); ++ if (!(mem = kmalloc(bytes, GFP_ATOMIC))) { ++ dev_kfree_skb(skb); ++ port->stat.tx_dropped++; ++ return NETDEV_TX_OK; ++ } ++ memcpy_swab32(mem, (u32 *)((int)skb->data & ~3), bytes / 4); ++ dev_kfree_skb(skb); ++#endif + -+ if (npe_reset(npe)) -+ continue; -+ npe->valid = 1; -+ found++; ++ phys = dma_map_single(&dev->dev, mem, bytes, DMA_TO_DEVICE); ++ if (dma_mapping_error(phys)) { ++#ifdef __ARMEB__ ++ dev_kfree_skb(skb); ++#else ++ kfree(mem); ++#endif ++ port->stat.tx_dropped++; ++ return NETDEV_TX_OK; + } + -+ if (!found) -+ return -ENOSYS; -+ return 0; -+} ++ n = queue_get_desc(txreadyq, port, 1); ++ BUG_ON(n < 0); ++ desc = tx_desc_ptr(port, n); + -+static void __exit npe_cleanup_module(void) -+{ -+ int i; ++#ifdef __ARMEB__ ++ port->tx_buff_tab[n] = skb; ++#else ++ port->tx_buff_tab[n] = mem; ++#endif ++ desc->data = phys + offset; ++ desc->buf_len = desc->pkt_len = len; + -+ for (i = 0; i < NPE_COUNT; i++) -+ if (npe_tab[i].mem_res) { -+ npe_reset(&npe_tab[i]); -+ release_resource(npe_tab[i].mem_res); ++ /* NPE firmware pads short frames with zeros internally */ ++ wmb(); ++ queue_put_desc(TX_QUEUE(port->id), tx_desc_phys(port, n), desc); ++ dev->trans_start = jiffies; ++ ++ if (qmgr_stat_empty(txreadyq)) { ++#if DEBUG_TX ++ printk(KERN_DEBUG "%s: eth_xmit queue full\n", dev->name); ++#endif ++ netif_stop_queue(dev); ++ /* we could miss TX ready interrupt */ ++ if (!qmgr_stat_empty(txreadyq)) { ++#if DEBUG_TX ++ printk(KERN_DEBUG "%s: eth_xmit ready again\n", ++ dev->name); ++#endif ++ netif_wake_queue(dev); + } ++ } ++ ++#if DEBUG_TX ++ printk(KERN_DEBUG "%s: eth_xmit end\n", dev->name); ++#endif ++ return NETDEV_TX_OK; +} + -+module_init(npe_init_module); -+module_exit(npe_cleanup_module); + -+MODULE_AUTHOR("Krzysztof Halasa"); -+MODULE_LICENSE("GPL v2"); ++static struct net_device_stats *eth_stats(struct net_device *dev) ++{ ++ struct port *port = netdev_priv(dev); ++ return &port->stat; ++} + -+EXPORT_SYMBOL(npe_names); -+EXPORT_SYMBOL(npe_running); -+EXPORT_SYMBOL(npe_request); -+EXPORT_SYMBOL(npe_release); -+EXPORT_SYMBOL(npe_load_firmware); -+EXPORT_SYMBOL(npe_send_message); -+EXPORT_SYMBOL(npe_recv_message); -+EXPORT_SYMBOL(npe_send_recv_message); -diff --git a/arch/arm/mach-ixp4xx/ixp4xx_qmgr.c b/arch/arm/mach-ixp4xx/ixp4xx_qmgr.c -new file mode 100644 -index 0000000..e833013 ---- /dev/null -+++ b/arch/arm/mach-ixp4xx/ixp4xx_qmgr.c -@@ -0,0 +1,274 @@ -+/* -+ * Intel IXP4xx Queue Manager driver for Linux -+ * -+ * Copyright (C) 2007 Krzysztof Halasa -+ * -+ * This program is free software; you can redistribute it and/or modify it -+ * under the terms of version 2 of the GNU General Public License -+ * as published by the Free Software Foundation. -+ */ ++static void eth_set_mcast_list(struct net_device *dev) ++{ ++ struct port *port = netdev_priv(dev); ++ struct dev_mc_list *mclist = dev->mc_list; ++ u8 diffs[ETH_ALEN], *addr; ++ int cnt = dev->mc_count, i; + -+#include -+#include -+#include -+#include -+#include ++ if ((dev->flags & IFF_PROMISC) || !mclist || !cnt) { ++ __raw_writel(DEFAULT_RX_CNTRL0 & ~RX_CNTRL0_ADDR_FLTR_EN, ++ &port->regs->rx_control[0]); ++ return; ++ } + -+#define DEBUG 0 ++ memset(diffs, 0, ETH_ALEN); ++ addr = mclist->dmi_addr; /* first MAC address */ + -+struct qmgr_regs __iomem *qmgr_regs; -+static struct resource *mem_res; -+static spinlock_t qmgr_lock; -+static u32 used_sram_bitmap[4]; /* 128 16-dword pages */ -+static void (*irq_handlers[HALF_QUEUES])(void *pdev); -+static void *irq_pdevs[HALF_QUEUES]; ++ while (--cnt && (mclist = mclist->next)) ++ for (i = 0; i < ETH_ALEN; i++) ++ diffs[i] |= addr[i] ^ mclist->dmi_addr[i]; + -+void qmgr_set_irq(unsigned int queue, int src, -+ void (*handler)(void *pdev), void *pdev) -+{ -+ u32 __iomem *reg = &qmgr_regs->irqsrc[queue / 8]; /* 8 queues / u32 */ -+ int bit = (queue % 8) * 4; /* 3 bits + 1 reserved bit per queue */ -+ unsigned long flags; ++ for (i = 0; i < ETH_ALEN; i++) { ++ __raw_writel(addr[i], &port->regs->mcast_addr[i]); ++ __raw_writel(~diffs[i], &port->regs->mcast_mask[i]); ++ } + -+ src &= 7; -+ spin_lock_irqsave(&qmgr_lock, flags); -+ __raw_writel((__raw_readl(reg) & ~(7 << bit)) | (src << bit), reg); -+ irq_handlers[queue] = handler; -+ irq_pdevs[queue] = pdev; -+ spin_unlock_irqrestore(&qmgr_lock, flags); ++ __raw_writel(DEFAULT_RX_CNTRL0 | RX_CNTRL0_ADDR_FLTR_EN, ++ &port->regs->rx_control[0]); +} + + -+static irqreturn_t qmgr_irq1(int irq, void *pdev) ++static int eth_ioctl(struct net_device *dev, struct ifreq *req, int cmd) +{ -+ int i; -+ u32 val = __raw_readl(&qmgr_regs->irqstat[0]); -+ __raw_writel(val, &qmgr_regs->irqstat[0]); /* ACK */ -+ -+ for (i = 0; i < HALF_QUEUES; i++) -+ if (val & (1 << i)) -+ irq_handlers[i](irq_pdevs[i]); ++ struct port *port = netdev_priv(dev); ++ unsigned int duplex_chg; ++ int err; + -+ return val ? IRQ_HANDLED : 0; ++ if (!netif_running(dev)) ++ return -EINVAL; ++ err = generic_mii_ioctl(&port->mii, if_mii(req), cmd, &duplex_chg); ++ if (duplex_chg) ++ eth_set_duplex(port); ++ return err; +} + + -+void qmgr_enable_irq(unsigned int queue) ++static int request_queues(struct port *port) +{ -+ unsigned long flags; -+ -+ spin_lock_irqsave(&qmgr_lock, flags); -+ __raw_writel(__raw_readl(&qmgr_regs->irqen[0]) | (1 << queue), -+ &qmgr_regs->irqen[0]); -+ spin_unlock_irqrestore(&qmgr_lock, flags); -+} ++ int err; + -+void qmgr_disable_irq(unsigned int queue) -+{ -+ unsigned long flags; ++ err = qmgr_request_queue(RXFREE_QUEUE(port->id), RX_DESCS, 0, 0); ++ if (err) ++ return err; + -+ spin_lock_irqsave(&qmgr_lock, flags); -+ __raw_writel(__raw_readl(&qmgr_regs->irqen[0]) & ~(1 << queue), -+ &qmgr_regs->irqen[0]); -+ spin_unlock_irqrestore(&qmgr_lock, flags); -+} ++ err = qmgr_request_queue(port->plat->rxq, RX_DESCS, 0, 0); ++ if (err) ++ goto rel_rxfree; + -+static inline void shift_mask(u32 *mask) -+{ -+ mask[3] = mask[3] << 1 | mask[2] >> 31; -+ mask[2] = mask[2] << 1 | mask[1] >> 31; -+ mask[1] = mask[1] << 1 | mask[0] >> 31; -+ mask[0] <<= 1; -+} ++ err = qmgr_request_queue(TX_QUEUE(port->id), TX_DESCS, 0, 0); ++ if (err) ++ goto rel_rx; + -+int qmgr_request_queue(unsigned int queue, unsigned int len /* dwords */, -+ unsigned int nearly_empty_watermark, -+ unsigned int nearly_full_watermark) -+{ -+ u32 cfg, addr = 0, mask[4]; /* in 16-dwords */ -+ int err; ++ err = qmgr_request_queue(port->plat->txreadyq, TX_DESCS, 0, 0); ++ if (err) ++ goto rel_tx; + -+ if (queue >= HALF_QUEUES) -+ return -ERANGE; ++ /* TX-done queue handles skbs sent out by the NPEs */ ++ if (!ports_open) { ++ err = qmgr_request_queue(TXDONE_QUEUE, TXDONE_QUEUE_LEN, 0, 0); ++ if (err) ++ goto rel_txready; ++ } ++ return 0; + -+ if ((nearly_empty_watermark | nearly_full_watermark) & ~7) -+ return -EINVAL; ++rel_txready: ++ qmgr_release_queue(port->plat->txreadyq); ++rel_tx: ++ qmgr_release_queue(TX_QUEUE(port->id)); ++rel_rx: ++ qmgr_release_queue(port->plat->rxq); ++rel_rxfree: ++ qmgr_release_queue(RXFREE_QUEUE(port->id)); ++ printk(KERN_DEBUG "%s: unable to request hardware queues\n", ++ port->netdev->name); ++ return err; ++} + -+ switch (len) { -+ case 16: -+ cfg = 0 << 24; -+ mask[0] = 0x1; -+ break; -+ case 32: -+ cfg = 1 << 24; -+ mask[0] = 0x3; -+ break; -+ case 64: -+ cfg = 2 << 24; -+ mask[0] = 0xF; -+ break; -+ case 128: -+ cfg = 3 << 24; -+ mask[0] = 0xFF; -+ break; -+ default: -+ return -EINVAL; -+ } ++static void release_queues(struct port *port) ++{ ++ qmgr_release_queue(RXFREE_QUEUE(port->id)); ++ qmgr_release_queue(port->plat->rxq); ++ qmgr_release_queue(TX_QUEUE(port->id)); ++ qmgr_release_queue(port->plat->txreadyq); + -+ cfg |= nearly_empty_watermark << 26; -+ cfg |= nearly_full_watermark << 29; -+ len /= 16; /* in 16-dwords: 1, 2, 4 or 8 */ -+ mask[1] = mask[2] = mask[3] = 0; ++ if (!ports_open) ++ qmgr_release_queue(TXDONE_QUEUE); ++} + -+ if (!try_module_get(THIS_MODULE)) -+ return -ENODEV; ++static int init_queues(struct port *port) ++{ ++ int i; + -+ spin_lock_irq(&qmgr_lock); -+ if (__raw_readl(&qmgr_regs->sram[queue])) { -+ err = -EBUSY; -+ goto err; -+ } ++ if (!ports_open) ++ if (!(dma_pool = dma_pool_create(DRV_NAME, NULL, ++ POOL_ALLOC_SIZE, 32, 0))) ++ return -ENOMEM; + -+ while (1) { -+ if (!(used_sram_bitmap[0] & mask[0]) && -+ !(used_sram_bitmap[1] & mask[1]) && -+ !(used_sram_bitmap[2] & mask[2]) && -+ !(used_sram_bitmap[3] & mask[3])) -+ break; /* found free space */ ++ if (!(port->desc_tab = dma_pool_alloc(dma_pool, GFP_KERNEL, ++ &port->desc_tab_phys))) ++ return -ENOMEM; ++ memset(port->desc_tab, 0, POOL_ALLOC_SIZE); ++ memset(port->rx_buff_tab, 0, sizeof(port->rx_buff_tab)); /* tables */ ++ memset(port->tx_buff_tab, 0, sizeof(port->tx_buff_tab)); + -+ addr++; -+ shift_mask(mask); -+ if (addr + len > ARRAY_SIZE(qmgr_regs->sram)) { -+ printk(KERN_ERR "qmgr: no free SRAM space for" -+ " queue %i\n", queue); -+ err = -ENOMEM; -+ goto err; ++ /* Setup RX buffers */ ++ for (i = 0; i < RX_DESCS; i++) { ++ struct desc *desc = rx_desc_ptr(port, i); ++ buffer_t *buff; ++ void *data; ++#ifdef __ARMEB__ ++ if (!(buff = netdev_alloc_skb(port->netdev, MAX_MRU))) ++ return -ENOMEM; ++ data = buff->data; ++#else ++ if (!(buff = kmalloc(MAX_MRU, GFP_KERNEL))) ++ return -ENOMEM; ++ data = buff; ++#endif ++ desc->buf_len = MAX_MRU; ++ desc->data = dma_map_single(&port->netdev->dev, data, ++ MAX_MRU, DMA_FROM_DEVICE); ++ if (dma_mapping_error(desc->data)) { ++ free_buffer(buff); ++ return -EIO; + } ++ port->rx_buff_tab[i] = buff; + } + -+ used_sram_bitmap[0] |= mask[0]; -+ used_sram_bitmap[1] |= mask[1]; -+ used_sram_bitmap[2] |= mask[2]; -+ used_sram_bitmap[3] |= mask[3]; -+ __raw_writel(cfg | (addr << 14), &qmgr_regs->sram[queue]); -+ spin_unlock_irq(&qmgr_lock); -+ -+#if DEBUG -+ printk(KERN_DEBUG "qmgr: requested queue %i, addr = 0x%02X\n", -+ queue, addr); -+#endif + return 0; -+ -+err: -+ spin_unlock_irq(&qmgr_lock); -+ module_put(THIS_MODULE); -+ return err; +} + -+void qmgr_release_queue(unsigned int queue) ++static void destroy_queues(struct port *port) +{ -+ u32 cfg, addr, mask[4]; -+ -+ BUG_ON(queue >= HALF_QUEUES); /* not in valid range */ ++ int i; + -+ spin_lock_irq(&qmgr_lock); -+ cfg = __raw_readl(&qmgr_regs->sram[queue]); -+ addr = (cfg >> 14) & 0xFF; -+ -+ BUG_ON(!addr); /* not requested */ -+ -+ switch ((cfg >> 24) & 3) { -+ case 0: mask[0] = 0x1; break; -+ case 1: mask[0] = 0x3; break; -+ case 2: mask[0] = 0xF; break; -+ case 3: mask[0] = 0xFF; break; ++ if (port->desc_tab) { ++ for (i = 0; i < RX_DESCS; i++) { ++ struct desc *desc = rx_desc_ptr(port, i); ++ buffer_t *buff = port->rx_buff_tab[i]; ++ if (buff) { ++ dma_unmap_single(&port->netdev->dev, ++ desc->data, MAX_MRU, ++ DMA_FROM_DEVICE); ++ free_buffer(buff); ++ } ++ } ++ for (i = 0; i < TX_DESCS; i++) { ++ struct desc *desc = tx_desc_ptr(port, i); ++ buffer_t *buff = port->tx_buff_tab[i]; ++ if (buff) { ++ dma_unmap_tx(port, desc); ++ free_buffer(buff); ++ } ++ } ++ dma_pool_free(dma_pool, port->desc_tab, port->desc_tab_phys); ++ port->desc_tab = NULL; + } + -+ while (addr--) -+ shift_mask(mask); -+ -+ __raw_writel(0, &qmgr_regs->sram[queue]); -+ -+ used_sram_bitmap[0] &= ~mask[0]; -+ used_sram_bitmap[1] &= ~mask[1]; -+ used_sram_bitmap[2] &= ~mask[2]; -+ used_sram_bitmap[3] &= ~mask[3]; -+ irq_handlers[queue] = NULL; /* catch IRQ bugs */ -+ spin_unlock_irq(&qmgr_lock); -+ -+ module_put(THIS_MODULE); -+#if DEBUG -+ printk(KERN_DEBUG "qmgr: released queue %i\n", queue); -+#endif ++ if (!ports_open && dma_pool) { ++ dma_pool_destroy(dma_pool); ++ dma_pool = NULL; ++ } +} + -+static int qmgr_init(void) ++static int eth_open(struct net_device *dev) +{ ++ struct port *port = netdev_priv(dev); ++ struct npe *npe = port->npe; ++ struct msg msg; + int i, err; -+ mem_res = request_mem_region(IXP4XX_QMGR_BASE_PHYS, -+ IXP4XX_QMGR_REGION_SIZE, -+ "IXP4xx Queue Manager"); -+ if (mem_res == NULL) -+ return -EBUSY; + -+ qmgr_regs = ioremap(IXP4XX_QMGR_BASE_PHYS, IXP4XX_QMGR_REGION_SIZE); -+ if (qmgr_regs == NULL) { -+ err = -ENOMEM; -+ goto error_map; -+ } ++ if (!npe_running(npe)) { ++ err = npe_load_firmware(npe, npe_name(npe), &dev->dev); ++ if (err) ++ return err; + -+ /* reset qmgr registers */ -+ for (i = 0; i < 4; i++) { -+ __raw_writel(0x33333333, &qmgr_regs->stat1[i]); -+ __raw_writel(0, &qmgr_regs->irqsrc[i]); -+ } -+ for (i = 0; i < 2; i++) { -+ __raw_writel(0, &qmgr_regs->stat2[i]); -+ __raw_writel(0xFFFFFFFF, &qmgr_regs->irqstat[i]); /* clear */ -+ __raw_writel(0, &qmgr_regs->irqen[i]); ++ if (npe_recv_message(npe, &msg, "ETH_GET_STATUS")) { ++ printk(KERN_ERR "%s: %s not responding\n", dev->name, ++ npe_name(npe)); ++ return -EIO; ++ } + } + -+ for (i = 0; i < QUEUES; i++) -+ __raw_writel(0, &qmgr_regs->sram[i]); ++ mdio_write(dev, port->plat->phy, MII_BMCR, port->mii_bmcr); + -+ err = request_irq(IRQ_IXP4XX_QM1, qmgr_irq1, 0, -+ "IXP4xx Queue Manager", NULL); -+ if (err) { -+ printk(KERN_ERR "qmgr: failed to request IRQ%i\n", -+ IRQ_IXP4XX_QM1); -+ goto error_irq; ++ memset(&msg, 0, sizeof(msg)); ++ msg.cmd = NPE_VLAN_SETRXQOSENTRY; ++ msg.eth_id = port->id; ++ msg.byte5 = port->plat->rxq | 0x80; ++ msg.byte7 = port->plat->rxq << 4; ++ for (i = 0; i < 8; i++) { ++ msg.byte3 = i; ++ if (npe_send_recv_message(port->npe, &msg, "ETH_SET_RXQ")) ++ return -EIO; + } + -+ used_sram_bitmap[0] = 0xF; /* 4 first pages reserved for config */ -+ spin_lock_init(&qmgr_lock); ++ msg.cmd = NPE_EDB_SETPORTADDRESS; ++ msg.eth_id = PHYSICAL_ID(port->id); ++ msg.byte2 = dev->dev_addr[0]; ++ msg.byte3 = dev->dev_addr[1]; ++ msg.byte4 = dev->dev_addr[2]; ++ msg.byte5 = dev->dev_addr[3]; ++ msg.byte6 = dev->dev_addr[4]; ++ msg.byte7 = dev->dev_addr[5]; ++ if (npe_send_recv_message(port->npe, &msg, "ETH_SET_MAC")) ++ return -EIO; + -+ printk(KERN_INFO "IXP4xx Queue Manager initialized.\n"); -+ return 0; ++ memset(&msg, 0, sizeof(msg)); ++ msg.cmd = NPE_FW_SETFIREWALLMODE; ++ msg.eth_id = port->id; ++ if (npe_send_recv_message(port->npe, &msg, "ETH_SET_FIREWALL_MODE")) ++ return -EIO; + -+error_irq: -+ iounmap(qmgr_regs); -+error_map: -+ release_mem_region(IXP4XX_QMGR_BASE_PHYS, IXP4XX_QMGR_REGION_SIZE); -+ return err; -+} ++ if ((err = request_queues(port)) != 0) ++ return err; + -+static void qmgr_remove(void) -+{ -+ free_irq(IRQ_IXP4XX_QM1, NULL); -+ synchronize_irq(IRQ_IXP4XX_QM1); -+ iounmap(qmgr_regs); -+ release_mem_region(IXP4XX_QMGR_BASE_PHYS, IXP4XX_QMGR_REGION_SIZE); -+} ++ if ((err = init_queues(port)) != 0) { ++ destroy_queues(port); ++ release_queues(port); ++ return err; ++ } + -+module_init(qmgr_init); -+module_exit(qmgr_remove); ++ for (i = 0; i < ETH_ALEN; i++) ++ __raw_writel(dev->dev_addr[i], &port->regs->hw_addr[i]); ++ __raw_writel(0x08, &port->regs->random_seed); ++ __raw_writel(0x12, &port->regs->partial_empty_threshold); ++ __raw_writel(0x30, &port->regs->partial_full_threshold); ++ __raw_writel(0x08, &port->regs->tx_start_bytes); ++ __raw_writel(0x15, &port->regs->tx_deferral); ++ __raw_writel(0x08, &port->regs->tx_2part_deferral[0]); ++ __raw_writel(0x07, &port->regs->tx_2part_deferral[1]); ++ __raw_writel(0x80, &port->regs->slot_time); ++ __raw_writel(0x01, &port->regs->int_clock_threshold); + -+MODULE_LICENSE("GPL v2"); -+MODULE_AUTHOR("Krzysztof Halasa"); ++ /* Populate queues with buffers, no failure after this point */ ++ for (i = 0; i < TX_DESCS; i++) ++ queue_put_desc(port->plat->txreadyq, ++ tx_desc_phys(port, i), tx_desc_ptr(port, i)); + -+EXPORT_SYMBOL(qmgr_regs); -+EXPORT_SYMBOL(qmgr_set_irq); -+EXPORT_SYMBOL(qmgr_enable_irq); -+EXPORT_SYMBOL(qmgr_disable_irq); -+EXPORT_SYMBOL(qmgr_request_queue); -+EXPORT_SYMBOL(qmgr_release_queue); -diff --git a/drivers/net/arm/Kconfig b/drivers/net/arm/Kconfig -index f9cc2b6..9274d3f 100644 ---- a/drivers/net/arm/Kconfig -+++ b/drivers/net/arm/Kconfig -@@ -47,3 +47,13 @@ config EP93XX_ETH - help - This is a driver for the ethernet hardware included in EP93xx CPUs. - Say Y if you are building a kernel for EP93xx based devices. ++ for (i = 0; i < RX_DESCS; i++) ++ queue_put_desc(RXFREE_QUEUE(port->id), ++ rx_desc_phys(port, i), rx_desc_ptr(port, i)); + -+config IXP4XX_ETH -+ tristate "IXP4xx Ethernet support" -+ depends on NET_ETHERNET && ARM && ARCH_IXP4XX -+ select IXP4XX_NPE -+ select IXP4XX_QMGR -+ select MII -+ help -+ Say Y here if you want to use built-in Ethernet ports -+ on IXP4xx processor. -diff --git a/drivers/net/arm/Makefile b/drivers/net/arm/Makefile -index a4c8682..7c812ac 100644 ---- a/drivers/net/arm/Makefile -+++ b/drivers/net/arm/Makefile -@@ -9,3 +9,4 @@ obj-$(CONFIG_ARM_ETHER3) += ether3.o - obj-$(CONFIG_ARM_ETHER1) += ether1.o - obj-$(CONFIG_ARM_AT91_ETHER) += at91_ether.o - obj-$(CONFIG_EP93XX_ETH) += ep93xx_eth.o -+obj-$(CONFIG_IXP4XX_ETH) += ixp4xx_eth.o -diff --git a/drivers/net/arm/ixp4xx_eth.c b/drivers/net/arm/ixp4xx_eth.c -new file mode 100644 -index 0000000..2c23f50 ---- /dev/null -+++ b/drivers/net/arm/ixp4xx_eth.c -@@ -0,0 +1,1259 @@ -+/* -+ * Intel IXP4xx Ethernet driver for Linux -+ * -+ * Copyright (C) 2007 Krzysztof Halasa -+ * -+ * This program is free software; you can redistribute it and/or modify it -+ * under the terms of version 2 of the GNU General Public License -+ * as published by the Free Software Foundation. -+ * -+ * Ethernet port config (0x00 is not present on IXP42X): -+ * -+ * logical port 0x00 0x10 0x20 -+ * NPE 0 (NPE-A) 1 (NPE-B) 2 (NPE-C) -+ * physical PortId 2 0 1 -+ * TX queue 23 24 25 -+ * RX-free queue 26 27 28 -+ * TX-done queue is always 31, per-port RX and TX-ready queues are configurable -+ * -+ * -+ * Queue entries: -+ * bits 0 -> 1 - NPE ID (RX and TX-done) -+ * bits 0 -> 2 - priority (TX, per 802.1D) -+ * bits 3 -> 4 - port ID (user-set?) -+ * bits 5 -> 31 - physical descriptor address -+ */ ++ __raw_writel(TX_CNTRL1_RETRIES, &port->regs->tx_control[1]); ++ __raw_writel(DEFAULT_TX_CNTRL0, &port->regs->tx_control[0]); ++ __raw_writel(0, &port->regs->rx_control[1]); ++ __raw_writel(DEFAULT_RX_CNTRL0, &port->regs->rx_control[0]); + -+#include -+#include -+#include -+#include -+#include -+#include -+#include -+#include -+#include -+#include ++ napi_enable(&port->napi); /* check location of this call */ + -+#define DEBUG_QUEUES 0 -+#define DEBUG_DESC 0 -+#define DEBUG_RX 0 -+#define DEBUG_TX 0 -+#define DEBUG_PKT_BYTES 0 -+#define DEBUG_MDIO 0 -+#define DEBUG_CLOSE 0 ++ phy_check_media(port, 1); ++ eth_set_mcast_list(dev); ++ netif_start_queue(dev); ++ schedule_delayed_work(&port->mdio_thread, MDIO_INTERVAL); + -+#define DRV_NAME "ixp4xx_eth" ++ qmgr_set_irq(port->plat->rxq, QUEUE_IRQ_SRC_NOT_EMPTY, ++ eth_rx_irq, dev); ++ if (!ports_open) { ++ qmgr_set_irq(TXDONE_QUEUE, QUEUE_IRQ_SRC_NOT_EMPTY, ++ eth_txdone_irq, NULL); ++ qmgr_enable_irq(TXDONE_QUEUE); ++ } ++ ports_open++; ++ netif_rx_schedule(dev, &port->napi); /* we may already have RX data, enables IRQ */ ++ return 0; ++} + -+#define MAX_NPES 3 ++static int eth_close(struct net_device *dev) ++{ ++ struct port *port = netdev_priv(dev); ++ struct msg msg; ++ int buffs = RX_DESCS; /* allocated RX buffers */ ++ int i; + -+#define RX_DESCS 64 /* also length of all RX queues */ -+#define TX_DESCS 16 /* also length of all TX queues */ -+#define TXDONE_QUEUE_LEN 64 /* dwords */ ++ ports_open--; ++ qmgr_disable_irq(port->plat->rxq); ++ netif_stop_queue(dev); + -+#define POOL_ALLOC_SIZE (sizeof(struct desc) * (RX_DESCS + TX_DESCS)) -+#define REGS_SIZE 0x1000 -+#define MAX_MRU 1536 /* 0x600 */ ++ while (queue_get_desc(RXFREE_QUEUE(port->id), port, 0) >= 0) ++ buffs--; + -+#define MDIO_INTERVAL (3 * HZ) -+#define MAX_MDIO_RETRIES 100 /* microseconds, typically 30 cycles */ -+#define MAX_MII_RESET_RETRIES 100 /* mdio_read() cycles, typically 4 */ -+#define MAX_CLOSE_WAIT 1000 /* microseconds, typically 2-3 cycles */ ++ memset(&msg, 0, sizeof(msg)); ++ msg.cmd = NPE_SETLOOPBACK_MODE; ++ msg.eth_id = port->id; ++ msg.byte3 = 1; ++ if (npe_send_recv_message(port->npe, &msg, "ETH_ENABLE_LOOPBACK")) ++ printk(KERN_CRIT "%s: unable to enable loopback\n", dev->name); + -+#define NPE_ID(port_id) ((port_id) >> 4) -+#define PHYSICAL_ID(port_id) ((NPE_ID(port_id) + 2) % 3) -+#define TX_QUEUE(port_id) (NPE_ID(port_id) + 23) -+#define RXFREE_QUEUE(port_id) (NPE_ID(port_id) + 26) -+#define TXDONE_QUEUE 31 ++ i = 0; ++ do { /* drain RX buffers */ ++ while (queue_get_desc(port->plat->rxq, port, 0) >= 0) ++ buffs--; ++ if (!buffs) ++ break; ++ if (qmgr_stat_empty(TX_QUEUE(port->id))) { ++ /* we have to inject some packet */ ++ struct desc *desc; ++ u32 phys; ++ int n = queue_get_desc(port->plat->txreadyq, port, 1); ++ BUG_ON(n < 0); ++ desc = tx_desc_ptr(port, n); ++ phys = tx_desc_phys(port, n); ++ desc->buf_len = desc->pkt_len = 1; ++ wmb(); ++ queue_put_desc(TX_QUEUE(port->id), phys, desc); ++ } ++ udelay(1); ++ } while (++i < MAX_CLOSE_WAIT); + -+/* TX Control Registers */ -+#define TX_CNTRL0_TX_EN 0x01 -+#define TX_CNTRL0_HALFDUPLEX 0x02 -+#define TX_CNTRL0_RETRY 0x04 -+#define TX_CNTRL0_PAD_EN 0x08 -+#define TX_CNTRL0_APPEND_FCS 0x10 -+#define TX_CNTRL0_2DEFER 0x20 -+#define TX_CNTRL0_RMII 0x40 /* reduced MII */ -+#define TX_CNTRL1_RETRIES 0x0F /* 4 bits */ ++ if (buffs) ++ printk(KERN_CRIT "%s: unable to drain RX queue, %i buffer(s)" ++ " left in NPE\n", dev->name, buffs); ++#if DEBUG_CLOSE ++ if (!buffs) ++ printk(KERN_DEBUG "Draining RX queue took %i cycles\n", i); ++#endif + -+/* RX Control Registers */ -+#define RX_CNTRL0_RX_EN 0x01 -+#define RX_CNTRL0_PADSTRIP_EN 0x02 -+#define RX_CNTRL0_SEND_FCS 0x04 -+#define RX_CNTRL0_PAUSE_EN 0x08 -+#define RX_CNTRL0_LOOP_EN 0x10 -+#define RX_CNTRL0_ADDR_FLTR_EN 0x20 -+#define RX_CNTRL0_RX_RUNT_EN 0x40 -+#define RX_CNTRL0_BCAST_DIS 0x80 -+#define RX_CNTRL1_DEFER_EN 0x01 ++ buffs = TX_DESCS; ++ while (queue_get_desc(TX_QUEUE(port->id), port, 1) >= 0) ++ buffs--; /* cancel TX */ + -+/* Core Control Register */ -+#define CORE_RESET 0x01 -+#define CORE_RX_FIFO_FLUSH 0x02 -+#define CORE_TX_FIFO_FLUSH 0x04 -+#define CORE_SEND_JAM 0x08 -+#define CORE_MDC_EN 0x10 /* MDIO using NPE-B ETH-0 only */ ++ i = 0; ++ do { ++ while (queue_get_desc(port->plat->txreadyq, port, 1) >= 0) ++ buffs--; ++ if (!buffs) ++ break; ++ } while (++i < MAX_CLOSE_WAIT); + -+#define DEFAULT_TX_CNTRL0 (TX_CNTRL0_TX_EN | TX_CNTRL0_RETRY | \ -+ TX_CNTRL0_PAD_EN | TX_CNTRL0_APPEND_FCS | \ -+ TX_CNTRL0_2DEFER) -+#define DEFAULT_RX_CNTRL0 RX_CNTRL0_RX_EN -+#define DEFAULT_CORE_CNTRL CORE_MDC_EN ++ if (buffs) ++ printk(KERN_CRIT "%s: unable to drain TX queue, %i buffer(s) " ++ "left in NPE\n", dev->name, buffs); ++#if DEBUG_CLOSE ++ if (!buffs) ++ printk(KERN_DEBUG "Draining TX queues took %i cycles\n", i); ++#endif + ++ msg.byte3 = 0; ++ if (npe_send_recv_message(port->npe, &msg, "ETH_DISABLE_LOOPBACK")) ++ printk(KERN_CRIT "%s: unable to disable loopback\n", ++ dev->name); + -+/* NPE message codes */ -+#define NPE_GETSTATUS 0x00 -+#define NPE_EDB_SETPORTADDRESS 0x01 -+#define NPE_EDB_GETMACADDRESSDATABASE 0x02 -+#define NPE_EDB_SETMACADDRESSSDATABASE 0x03 -+#define NPE_GETSTATS 0x04 -+#define NPE_RESETSTATS 0x05 -+#define NPE_SETMAXFRAMELENGTHS 0x06 -+#define NPE_VLAN_SETRXTAGMODE 0x07 -+#define NPE_VLAN_SETDEFAULTRXVID 0x08 -+#define NPE_VLAN_SETPORTVLANTABLEENTRY 0x09 -+#define NPE_VLAN_SETPORTVLANTABLERANGE 0x0A -+#define NPE_VLAN_SETRXQOSENTRY 0x0B -+#define NPE_VLAN_SETPORTIDEXTRACTIONMODE 0x0C -+#define NPE_STP_SETBLOCKINGSTATE 0x0D -+#define NPE_FW_SETFIREWALLMODE 0x0E -+#define NPE_PC_SETFRAMECONTROLDURATIONID 0x0F -+#define NPE_PC_SETAPMACTABLE 0x11 -+#define NPE_SETLOOPBACK_MODE 0x12 -+#define NPE_PC_SETBSSIDTABLE 0x13 -+#define NPE_ADDRESS_FILTER_CONFIG 0x14 -+#define NPE_APPENDFCSCONFIG 0x15 -+#define NPE_NOTIFY_MAC_RECOVERY_DONE 0x16 -+#define NPE_MAC_RECOVERY_START 0x17 ++ port->mii_bmcr = mdio_read(dev, port->plat->phy, MII_BMCR) & ++ ~(BMCR_RESET | BMCR_PDOWN); /* may have been altered */ ++ mdio_write(dev, port->plat->phy, MII_BMCR, ++ port->mii_bmcr | BMCR_PDOWN); + ++ if (!ports_open) ++ qmgr_disable_irq(TXDONE_QUEUE); ++ cancel_rearming_delayed_work(&port->mdio_thread); ++ napi_disable(&port->napi); ++ destroy_queues(port); ++ release_queues(port); ++ return 0; ++} + -+#ifdef __ARMEB__ -+typedef struct sk_buff buffer_t; -+#define free_buffer dev_kfree_skb -+#define free_buffer_irq dev_kfree_skb_irq -+#else -+typedef void buffer_t; -+#define free_buffer kfree -+#define free_buffer_irq kfree -+#endif ++static int __devinit eth_init_one(struct platform_device *pdev) ++{ ++ struct port *port; ++ struct net_device *dev; ++ struct eth_plat_info *plat = pdev->dev.platform_data; ++ u32 regs_phys; ++ int err; + -+struct eth_regs { -+ u32 tx_control[2], __res1[2]; /* 000 */ -+ u32 rx_control[2], __res2[2]; /* 010 */ -+ u32 random_seed, __res3[3]; /* 020 */ -+ u32 partial_empty_threshold, __res4; /* 030 */ -+ u32 partial_full_threshold, __res5; /* 038 */ -+ u32 tx_start_bytes, __res6[3]; /* 040 */ -+ u32 tx_deferral, rx_deferral,__res7[2]; /* 050 */ -+ u32 tx_2part_deferral[2], __res8[2]; /* 060 */ -+ u32 slot_time, __res9[3]; /* 070 */ -+ u32 mdio_command[4]; /* 080 */ -+ u32 mdio_status[4]; /* 090 */ -+ u32 mcast_mask[6], __res10[2]; /* 0A0 */ -+ u32 mcast_addr[6], __res11[2]; /* 0C0 */ -+ u32 int_clock_threshold, __res12[3]; /* 0E0 */ -+ u32 hw_addr[6], __res13[61]; /* 0F0 */ -+ u32 core_control; /* 1FC */ -+}; ++ if (!(dev = alloc_etherdev(sizeof(struct port)))) ++ return -ENOMEM; + -+struct port { -+ struct resource *mem_res; -+ struct eth_regs __iomem *regs; -+ struct npe *npe; -+ struct net_device *netdev; -+ struct net_device_stats stat; -+ struct mii_if_info mii; -+ struct delayed_work mdio_thread; -+ struct eth_plat_info *plat; -+ buffer_t *rx_buff_tab[RX_DESCS], *tx_buff_tab[TX_DESCS]; -+ struct desc *desc_tab; /* coherent */ -+ u32 desc_tab_phys; -+ int id; /* logical port ID */ -+ u16 mii_bmcr; -+}; ++ SET_NETDEV_DEV(dev, &pdev->dev); ++ port = netdev_priv(dev); ++ port->netdev = dev; ++ port->id = pdev->id; + -+/* NPE message structure */ -+struct msg { -+#ifdef __ARMEB__ -+ u8 cmd, eth_id, byte2, byte3; -+ u8 byte4, byte5, byte6, byte7; -+#else -+ u8 byte3, byte2, eth_id, cmd; -+ u8 byte7, byte6, byte5, byte4; -+#endif -+}; ++ switch (port->id) { ++ case IXP4XX_ETH_NPEA: ++ port->regs = (struct eth_regs __iomem *)IXP4XX_EthA_BASE_VIRT; ++ regs_phys = IXP4XX_EthA_BASE_PHYS; ++ break; ++ case IXP4XX_ETH_NPEB: ++ port->regs = (struct eth_regs __iomem *)IXP4XX_EthB_BASE_VIRT; ++ regs_phys = IXP4XX_EthB_BASE_PHYS; ++ break; ++ case IXP4XX_ETH_NPEC: ++ port->regs = (struct eth_regs __iomem *)IXP4XX_EthC_BASE_VIRT; ++ regs_phys = IXP4XX_EthC_BASE_PHYS; ++ break; ++ default: ++ err = -ENOSYS; ++ goto err_free; ++ } + -+/* Ethernet packet descriptor */ -+struct desc { -+ u32 next; /* pointer to next buffer, unused */ ++ dev->open = eth_open; ++ dev->hard_start_xmit = eth_xmit; ++ dev->stop = eth_close; ++ dev->get_stats = eth_stats; ++ dev->do_ioctl = eth_ioctl; ++ dev->set_multicast_list = eth_set_mcast_list; ++ dev->tx_queue_len = 100; + -+#ifdef __ARMEB__ -+ u16 buf_len; /* buffer length */ -+ u16 pkt_len; /* packet length */ -+ u32 data; /* pointer to data buffer in RAM */ -+ u8 dest_id; -+ u8 src_id; -+ u16 flags; -+ u8 qos; -+ u8 padlen; -+ u16 vlan_tci; -+#else -+ u16 pkt_len; /* packet length */ -+ u16 buf_len; /* buffer length */ -+ u32 data; /* pointer to data buffer in RAM */ -+ u16 flags; -+ u8 src_id; -+ u8 dest_id; -+ u16 vlan_tci; -+ u8 padlen; -+ u8 qos; -+#endif ++ netif_napi_add(dev, &port->napi, eth_poll, ETH_NAPI_WEIGHT); + -+#ifdef __ARMEB__ -+ u8 dst_mac_0, dst_mac_1, dst_mac_2, dst_mac_3; -+ u8 dst_mac_4, dst_mac_5, src_mac_0, src_mac_1; -+ u8 src_mac_2, src_mac_3, src_mac_4, src_mac_5; -+#else -+ u8 dst_mac_3, dst_mac_2, dst_mac_1, dst_mac_0; -+ u8 src_mac_1, src_mac_0, dst_mac_5, dst_mac_4; -+ u8 src_mac_5, src_mac_4, src_mac_3, src_mac_2; -+#endif -+}; -+ -+ -+#define rx_desc_phys(port, n) ((port)->desc_tab_phys + \ -+ (n) * sizeof(struct desc)) -+#define rx_desc_ptr(port, n) (&(port)->desc_tab[n]) -+ -+#define tx_desc_phys(port, n) ((port)->desc_tab_phys + \ -+ ((n) + RX_DESCS) * sizeof(struct desc)) -+#define tx_desc_ptr(port, n) (&(port)->desc_tab[(n) + RX_DESCS]) -+ -+#ifndef __ARMEB__ -+static inline void memcpy_swab32(u32 *dest, u32 *src, int cnt) -+{ -+ int i; -+ for (i = 0; i < cnt; i++) -+ dest[i] = swab32(src[i]); -+} -+#endif -+ -+static spinlock_t mdio_lock; -+static struct eth_regs __iomem *mdio_regs; /* mdio command and status only */ -+static int ports_open; -+static struct port *npe_port_tab[MAX_NPES]; -+static struct dma_pool *dma_pool; -+ -+ -+static u16 mdio_cmd(struct net_device *dev, int phy_id, int location, -+ int write, u16 cmd) -+{ -+ int cycles = 0; -+ -+ if (__raw_readl(&mdio_regs->mdio_command[3]) & 0x80) { -+ printk(KERN_ERR "%s: MII not ready to transmit\n", dev->name); -+ return 0; ++ if (!(port->npe = npe_request(NPE_ID(port->id)))) { ++ err = -EIO; ++ goto err_free; + } + -+ if (write) { -+ __raw_writel(cmd & 0xFF, &mdio_regs->mdio_command[0]); -+ __raw_writel(cmd >> 8, &mdio_regs->mdio_command[1]); ++ if (register_netdev(dev)) { ++ err = -EIO; ++ goto err_npe_rel; + } -+ __raw_writel(((phy_id << 5) | location) & 0xFF, -+ &mdio_regs->mdio_command[2]); -+ __raw_writel((phy_id >> 3) | (write << 2) | 0x80 /* GO */, -+ &mdio_regs->mdio_command[3]); + -+ while ((cycles < MAX_MDIO_RETRIES) && -+ (__raw_readl(&mdio_regs->mdio_command[3]) & 0x80)) { -+ udelay(1); -+ cycles++; ++ port->mem_res = request_mem_region(regs_phys, REGS_SIZE, dev->name); ++ if (!port->mem_res) { ++ err = -EBUSY; ++ goto err_unreg; + } + -+ if (cycles == MAX_MDIO_RETRIES) { -+ printk(KERN_ERR "%s: MII write failed\n", dev->name); -+ return 0; -+ } ++ port->plat = plat; ++ npe_port_tab[NPE_ID(port->id)] = port; ++ memcpy(dev->dev_addr, plat->hwaddr, ETH_ALEN); + -+#if DEBUG_MDIO -+ printk(KERN_DEBUG "%s: mdio_cmd() took %i cycles\n", dev->name, -+ cycles); -+#endif ++ platform_set_drvdata(pdev, dev); + -+ if (write) -+ return 0; ++ __raw_writel(DEFAULT_CORE_CNTRL | CORE_RESET, ++ &port->regs->core_control); ++ udelay(50); ++ __raw_writel(DEFAULT_CORE_CNTRL, &port->regs->core_control); ++ udelay(50); + -+ if (__raw_readl(&mdio_regs->mdio_status[3]) & 0x80) { -+ printk(KERN_ERR "%s: MII read failed\n", dev->name); -+ return 0; -+ } ++ port->mii.dev = dev; ++ port->mii.mdio_read = mdio_read; ++ port->mii.mdio_write = mdio_write; ++ port->mii.phy_id = plat->phy; ++ port->mii.phy_id_mask = 0x1F; ++ port->mii.reg_num_mask = 0x1F; + -+ return (__raw_readl(&mdio_regs->mdio_status[0]) & 0xFF) | -+ (__raw_readl(&mdio_regs->mdio_status[1]) << 8); -+} ++ printk(KERN_INFO "%s: MII PHY %i on %s\n", dev->name, plat->phy, ++ npe_name(port->npe)); + -+static int mdio_read(struct net_device *dev, int phy_id, int location) -+{ -+ unsigned long flags; -+ u16 val; ++ phy_reset(dev, plat->phy); ++ port->mii_bmcr = mdio_read(dev, plat->phy, MII_BMCR) & ++ ~(BMCR_RESET | BMCR_PDOWN); ++ mdio_write(dev, plat->phy, MII_BMCR, port->mii_bmcr | BMCR_PDOWN); + -+ spin_lock_irqsave(&mdio_lock, flags); -+ val = mdio_cmd(dev, phy_id, location, 0, 0); -+ spin_unlock_irqrestore(&mdio_lock, flags); -+ return val; ++ INIT_DELAYED_WORK(&port->mdio_thread, mdio_thread); ++ return 0; ++ ++err_unreg: ++ unregister_netdev(dev); ++err_npe_rel: ++ npe_release(port->npe); ++err_free: ++ free_netdev(dev); ++ return err; +} + -+static void mdio_write(struct net_device *dev, int phy_id, int location, -+ int val) ++static int __devexit eth_remove_one(struct platform_device *pdev) +{ -+ unsigned long flags; ++ struct net_device *dev = platform_get_drvdata(pdev); ++ struct port *port = netdev_priv(dev); + -+ spin_lock_irqsave(&mdio_lock, flags); -+ mdio_cmd(dev, phy_id, location, 1, val); -+ spin_unlock_irqrestore(&mdio_lock, flags); ++ unregister_netdev(dev); ++ npe_port_tab[NPE_ID(port->id)] = NULL; ++ platform_set_drvdata(pdev, NULL); ++ npe_release(port->npe); ++ release_resource(port->mem_res); ++ free_netdev(dev); ++ return 0; +} + -+static void phy_reset(struct net_device *dev, int phy_id) ++static struct platform_driver drv = { ++ .driver.name = DRV_NAME, ++ .probe = eth_init_one, ++ .remove = eth_remove_one, ++}; ++ ++static int __init eth_init_module(void) +{ -+ struct port *port = netdev_priv(dev); -+ int cycles = 0; ++ if (!(ixp4xx_read_feature_bits() & IXP4XX_FEATURE_NPEB_ETH0)) ++ return -ENOSYS; + -+ mdio_write(dev, phy_id, MII_BMCR, port->mii_bmcr | BMCR_RESET); -+ -+ while (cycles < MAX_MII_RESET_RETRIES) { -+ if (!(mdio_read(dev, phy_id, MII_BMCR) & BMCR_RESET)) { -+#if DEBUG_MDIO -+ printk(KERN_DEBUG "%s: phy_reset() took %i cycles\n", -+ dev->name, cycles); -+#endif -+ return; -+ } -+ udelay(1); -+ cycles++; -+ } ++ /* All MII PHY accesses use NPE-B Ethernet registers */ ++ spin_lock_init(&mdio_lock); ++ mdio_regs = (struct eth_regs __iomem *)IXP4XX_EthB_BASE_VIRT; ++ __raw_writel(DEFAULT_CORE_CNTRL, &mdio_regs->core_control); + -+ printk(KERN_ERR "%s: MII reset failed\n", dev->name); ++ return platform_driver_register(&drv); +} + -+static void eth_set_duplex(struct port *port) ++static void __exit eth_cleanup_module(void) +{ -+ if (port->mii.full_duplex) -+ __raw_writel(DEFAULT_TX_CNTRL0 & ~TX_CNTRL0_HALFDUPLEX, -+ &port->regs->tx_control[0]); -+ else -+ __raw_writel(DEFAULT_TX_CNTRL0 | TX_CNTRL0_HALFDUPLEX, -+ &port->regs->tx_control[0]); ++ platform_driver_unregister(&drv); +} + ++MODULE_AUTHOR("Krzysztof Halasa"); ++MODULE_DESCRIPTION("Intel IXP4xx Ethernet driver"); ++MODULE_LICENSE("GPL v2"); ++module_init(eth_init_module); ++module_exit(eth_cleanup_module); +Index: linux-2.6.24.7/drivers/net/wan/Kconfig +=================================================================== +--- linux-2.6.24.7.orig/drivers/net/wan/Kconfig ++++ linux-2.6.24.7/drivers/net/wan/Kconfig +@@ -334,6 +334,15 @@ config DSCC4_PCI_RST + + Say Y if your card supports this feature. + ++config IXP4XX_HSS ++ tristate "IXP4xx HSS (synchronous serial port) support" ++ depends on HDLC && ARM && ARCH_IXP4XX ++ select IXP4XX_NPE ++ select IXP4XX_QMGR ++ help ++ Say Y here if you want to use built-in HSS ports ++ on IXP4xx processor. + -+static void phy_check_media(struct port *port, int init) -+{ -+ if (mii_check_media(&port->mii, 1, init)) -+ eth_set_duplex(port); -+ if (port->mii.force_media) { /* mii_check_media() doesn't work */ -+ struct net_device *dev = port->netdev; -+ int cur_link = mii_link_ok(&port->mii); -+ int prev_link = netif_carrier_ok(dev); + config DLCI + tristate "Frame Relay DLCI support" + ---help--- +Index: linux-2.6.24.7/drivers/net/wan/Makefile +=================================================================== +--- linux-2.6.24.7.orig/drivers/net/wan/Makefile ++++ linux-2.6.24.7/drivers/net/wan/Makefile +@@ -42,6 +42,7 @@ obj-$(CONFIG_C101) += c101.o + obj-$(CONFIG_WANXL) += wanxl.o + obj-$(CONFIG_PCI200SYN) += pci200syn.o + obj-$(CONFIG_PC300TOO) += pc300too.o ++obj-$(CONFIG_IXP4XX_HSS) += ixp4xx_hss.o + + clean-files := wanxlfw.inc + $(obj)/wanxl.o: $(obj)/wanxlfw.inc +Index: linux-2.6.24.7/drivers/net/wan/ixp4xx_hss.c +=================================================================== +--- /dev/null ++++ linux-2.6.24.7/drivers/net/wan/ixp4xx_hss.c +@@ -0,0 +1,1270 @@ ++/* ++ * Intel IXP4xx HSS (synchronous serial port) driver for Linux ++ * ++ * Copyright (C) 2007 Krzysztof Halasa ++ * ++ * This program is free software; you can redistribute it and/or modify it ++ * under the terms of version 2 of the GNU General Public License ++ * as published by the Free Software Foundation. ++ */ + -+ if (!prev_link && cur_link) { -+ printk(KERN_INFO "%s: link up\n", dev->name); -+ netif_carrier_on(dev); -+ } else if (prev_link && !cur_link) { -+ printk(KERN_INFO "%s: link down\n", dev->name); -+ netif_carrier_off(dev); -+ } -+ } -+} ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include + ++#define DEBUG_QUEUES 0 ++#define DEBUG_DESC 0 ++#define DEBUG_RX 0 ++#define DEBUG_TX 0 ++#define DEBUG_PKT_BYTES 0 ++#define DEBUG_CLOSE 0 + -+static void mdio_thread(struct work_struct *work) -+{ -+ struct port *port = container_of(work, struct port, mdio_thread.work); ++#define DRV_NAME "ixp4xx_hss" + -+ phy_check_media(port, 0); -+ schedule_delayed_work(&port->mdio_thread, MDIO_INTERVAL); -+} ++#define PKT_EXTRA_FLAGS 0 /* orig 1 */ ++#define FRAME_SYNC_OFFSET 0 /* unused, channelized only */ ++#define FRAME_SYNC_SIZE 1024 ++#define PKT_NUM_PIPES 1 /* 1, 2 or 4 */ ++#define PKT_PIPE_FIFO_SIZEW 4 /* total 4 dwords per HSS */ + ++#define RX_DESCS 16 /* also length of all RX queues */ ++#define TX_DESCS 16 /* also length of all TX queues */ + -+static inline void debug_pkt(struct net_device *dev, const char *func, -+ u8 *data, int len) -+{ -+#if DEBUG_PKT_BYTES -+ int i; ++#define POOL_ALLOC_SIZE (sizeof(struct desc) * (RX_DESCS + TX_DESCS)) ++#define RX_SIZE (HDLC_MAX_MRU + 4) /* NPE needs more space */ ++#define MAX_CLOSE_WAIT 1000 /* microseconds */ + -+ printk(KERN_DEBUG "%s: %s(%i) ", dev->name, func, len); -+ for (i = 0; i < len; i++) { -+ if (i >= DEBUG_PKT_BYTES) -+ break; -+ printk("%s%02X", -+ ((i == 6) || (i == 12) || (i >= 14)) ? " " : "", -+ data[i]); -+ } -+ printk("\n"); -+#endif -+} ++/* Queue IDs */ ++#define HSS0_CHL_RXTRIG_QUEUE 12 /* orig size = 32 dwords */ ++#define HSS0_PKT_RX_QUEUE 13 /* orig size = 32 dwords */ ++#define HSS0_PKT_TX0_QUEUE 14 /* orig size = 16 dwords */ ++#define HSS0_PKT_TX1_QUEUE 15 ++#define HSS0_PKT_TX2_QUEUE 16 ++#define HSS0_PKT_TX3_QUEUE 17 ++#define HSS0_PKT_RXFREE0_QUEUE 18 /* orig size = 16 dwords */ ++#define HSS0_PKT_RXFREE1_QUEUE 19 ++#define HSS0_PKT_RXFREE2_QUEUE 20 ++#define HSS0_PKT_RXFREE3_QUEUE 21 ++#define HSS0_PKT_TXDONE_QUEUE 22 /* orig size = 64 dwords */ + ++#define HSS1_CHL_RXTRIG_QUEUE 10 ++#define HSS1_PKT_RX_QUEUE 0 ++#define HSS1_PKT_TX0_QUEUE 5 ++#define HSS1_PKT_TX1_QUEUE 6 ++#define HSS1_PKT_TX2_QUEUE 7 ++#define HSS1_PKT_TX3_QUEUE 8 ++#define HSS1_PKT_RXFREE0_QUEUE 1 ++#define HSS1_PKT_RXFREE1_QUEUE 2 ++#define HSS1_PKT_RXFREE2_QUEUE 3 ++#define HSS1_PKT_RXFREE3_QUEUE 4 ++#define HSS1_PKT_TXDONE_QUEUE 9 + -+static inline void debug_desc(u32 phys, struct desc *desc) -+{ -+#if DEBUG_DESC -+ printk(KERN_DEBUG "%X: %X %3X %3X %08X %2X < %2X %4X %X" -+ " %X %X %02X%02X%02X%02X%02X%02X < %02X%02X%02X%02X%02X%02X\n", -+ phys, desc->next, desc->buf_len, desc->pkt_len, -+ desc->data, desc->dest_id, desc->src_id, desc->flags, -+ desc->qos, desc->padlen, desc->vlan_tci, -+ desc->dst_mac_0, desc->dst_mac_1, desc->dst_mac_2, -+ desc->dst_mac_3, desc->dst_mac_4, desc->dst_mac_5, -+ desc->src_mac_0, desc->src_mac_1, desc->src_mac_2, -+ desc->src_mac_3, desc->src_mac_4, desc->src_mac_5); -+#endif -+} ++#define NPE_PKT_MODE_HDLC 0 ++#define NPE_PKT_MODE_RAW 1 ++#define NPE_PKT_MODE_56KMODE 2 ++#define NPE_PKT_MODE_56KENDIAN_MSB 4 + -+static inline void debug_queue(unsigned int queue, int is_get, u32 phys) -+{ -+#if DEBUG_QUEUES -+ static struct { -+ int queue; -+ char *name; -+ } names[] = { -+ { TX_QUEUE(0x10), "TX#0 " }, -+ { TX_QUEUE(0x20), "TX#1 " }, -+ { TX_QUEUE(0x00), "TX#2 " }, -+ { RXFREE_QUEUE(0x10), "RX-free#0 " }, -+ { RXFREE_QUEUE(0x20), "RX-free#1 " }, -+ { RXFREE_QUEUE(0x00), "RX-free#2 " }, -+ { TXDONE_QUEUE, "TX-done " }, -+ }; -+ int i; ++/* PKT_PIPE_HDLC_CFG_WRITE flags */ ++#define PKT_HDLC_IDLE_ONES 0x1 /* default = flags */ ++#define PKT_HDLC_CRC_32 0x2 /* default = CRC-16 */ ++#define PKT_HDLC_MSB_ENDIAN 0x4 /* default = LE */ + -+ for (i = 0; i < ARRAY_SIZE(names); i++) -+ if (names[i].queue == queue) -+ break; + -+ printk(KERN_DEBUG "Queue %i %s%s %X\n", queue, -+ i < ARRAY_SIZE(names) ? names[i].name : "", -+ is_get ? "->" : "<-", phys); -+#endif -+} ++/* hss_config, PCRs */ ++/* Frame sync sampling, default = active low */ ++#define PCR_FRM_SYNC_ACTIVE_HIGH 0x40000000 ++#define PCR_FRM_SYNC_FALLINGEDGE 0x80000000 ++#define PCR_FRM_SYNC_RISINGEDGE 0xC0000000 + -+static inline u32 queue_get_entry(unsigned int queue) -+{ -+ u32 phys = qmgr_get_entry(queue); -+ debug_queue(queue, 1, phys); -+ return phys; -+} ++/* Frame sync pin: input (default) or output generated off a given clk edge */ ++#define PCR_FRM_SYNC_OUTPUT_FALLING 0x20000000 ++#define PCR_FRM_SYNC_OUTPUT_RISING 0x30000000 + -+static inline int queue_get_desc(unsigned int queue, struct port *port, -+ int is_tx) -+{ -+ u32 phys, tab_phys, n_desc; -+ struct desc *tab; ++/* Frame and data clock sampling on edge, default = falling */ ++#define PCR_FCLK_EDGE_RISING 0x08000000 ++#define PCR_DCLK_EDGE_RISING 0x04000000 + -+ if (!(phys = queue_get_entry(queue))) -+ return -1; ++/* Clock direction, default = input */ ++#define PCR_SYNC_CLK_DIR_OUTPUT 0x02000000 + -+ phys &= ~0x1F; /* mask out non-address bits */ -+ tab_phys = is_tx ? tx_desc_phys(port, 0) : rx_desc_phys(port, 0); -+ tab = is_tx ? tx_desc_ptr(port, 0) : rx_desc_ptr(port, 0); -+ n_desc = (phys - tab_phys) / sizeof(struct desc); -+ BUG_ON(n_desc >= (is_tx ? TX_DESCS : RX_DESCS)); -+ debug_desc(phys, &tab[n_desc]); -+ BUG_ON(tab[n_desc].next); -+ return n_desc; -+} ++/* Generate/Receive frame pulses, default = enabled */ ++#define PCR_FRM_PULSE_DISABLED 0x01000000 + -+static inline void queue_put_desc(unsigned int queue, u32 phys, -+ struct desc *desc) -+{ -+ debug_queue(queue, 0, phys); -+ debug_desc(phys, desc); -+ BUG_ON(phys & 0x1F); -+ qmgr_put_entry(queue, phys); -+ BUG_ON(qmgr_stat_overflow(queue)); -+} ++ /* Data rate is full (default) or half the configured clk speed */ ++#define PCR_HALF_CLK_RATE 0x00200000 + ++/* Invert data between NPE and HSS FIFOs? (default = no) */ ++#define PCR_DATA_POLARITY_INVERT 0x00100000 + -+static inline void dma_unmap_tx(struct port *port, struct desc *desc) -+{ -+#ifdef __ARMEB__ -+ dma_unmap_single(&port->netdev->dev, desc->data, -+ desc->buf_len, DMA_TO_DEVICE); -+#else -+ dma_unmap_single(&port->netdev->dev, desc->data & ~3, -+ ALIGN((desc->data & 3) + desc->buf_len, 4), -+ DMA_TO_DEVICE); -+#endif -+} ++/* TX/RX endianness, default = LSB */ ++#define PCR_MSB_ENDIAN 0x00080000 + ++/* Normal (default) / open drain mode (TX only) */ ++#define PCR_TX_PINS_OPEN_DRAIN 0x00040000 + -+static void eth_rx_irq(void *pdev) -+{ -+ struct net_device *dev = pdev; -+ struct port *port = netdev_priv(dev); ++/* No framing bit transmitted and expected on RX? (default = framing bit) */ ++#define PCR_SOF_NO_FBIT 0x00020000 + -+#if DEBUG_RX -+ printk(KERN_DEBUG "%s: eth_rx_irq\n", dev->name); -+#endif -+ qmgr_disable_irq(port->plat->rxq); -+ netif_rx_schedule(dev); -+} ++/* Drive data pins? */ ++#define PCR_TX_DATA_ENABLE 0x00010000 + -+static int eth_poll(struct net_device *dev, int *budget) -+{ -+ struct port *port = netdev_priv(dev); -+ unsigned int rxq = port->plat->rxq, rxfreeq = RXFREE_QUEUE(port->id); -+ int quota = dev->quota, received = 0; ++/* Voice 56k type: drive the data pins low (default), high, high Z */ ++#define PCR_TX_V56K_HIGH 0x00002000 ++#define PCR_TX_V56K_HIGH_IMP 0x00004000 + -+#if DEBUG_RX -+ printk(KERN_DEBUG "%s: eth_poll\n", dev->name); -+#endif ++/* Unassigned type: drive the data pins low (default), high, high Z */ ++#define PCR_TX_UNASS_HIGH 0x00000800 ++#define PCR_TX_UNASS_HIGH_IMP 0x00001000 + -+ while (quota) { -+ struct sk_buff *skb; -+ struct desc *desc; -+ int n; -+#ifdef __ARMEB__ -+ struct sk_buff *temp; -+ u32 phys; -+#endif ++/* T1 @ 1.544MHz only: Fbit dictated in FIFO (default) or high Z */ ++#define PCR_TX_FB_HIGH_IMP 0x00000400 + -+ if ((n = queue_get_desc(rxq, port, 0)) < 0) { -+ dev->quota -= received; /* No packet received */ -+ *budget -= received; -+ received = 0; -+#if DEBUG_RX -+ printk(KERN_DEBUG "%s: eth_poll netif_rx_complete\n", -+ dev->name); -+#endif -+ netif_rx_complete(dev); -+ qmgr_enable_irq(rxq); -+ if (!qmgr_stat_empty(rxq) && -+ netif_rx_reschedule(dev, 0)) { -+#if DEBUG_RX -+ printk(KERN_DEBUG "%s: eth_poll" -+ " netif_rx_reschedule successed\n", -+ dev->name); -+#endif -+ qmgr_disable_irq(rxq); -+ continue; -+ } -+#if DEBUG_RX -+ printk(KERN_DEBUG "%s: eth_poll all done\n", -+ dev->name); -+#endif -+ return 0; /* all work done */ -+ } ++/* 56k data endiannes - which bit unused: high (default) or low */ ++#define PCR_TX_56KE_BIT_0_UNUSED 0x00000200 + -+ desc = rx_desc_ptr(port, n); ++/* 56k data transmission type: 32/8 bit data (default) or 56K data */ ++#define PCR_TX_56KS_56K_DATA 0x00000100 + -+#ifdef __ARMEB__ -+ if ((skb = netdev_alloc_skb(dev, MAX_MRU)) != NULL) { -+ phys = dma_map_single(&dev->dev, skb->data, -+ MAX_MRU, DMA_FROM_DEVICE); -+ if (dma_mapping_error(phys)) { -+ dev_kfree_skb(skb); -+ skb = NULL; -+ } -+ } -+#else -+ skb = netdev_alloc_skb(dev, desc->pkt_len); -+#endif ++/* hss_config, cCR */ ++/* Number of packetized clients, default = 1 */ ++#define CCR_NPE_HFIFO_2_HDLC 0x04000000 ++#define CCR_NPE_HFIFO_3_OR_4HDLC 0x08000000 + -+ if (!skb) { -+ port->stat.rx_dropped++; -+ /* put the desc back on RX-ready queue */ -+ desc->buf_len = MAX_MRU; -+ desc->pkt_len = 0; -+ queue_put_desc(rxfreeq, rx_desc_phys(port, n), desc); -+ continue; -+ } ++/* default = no loopback */ ++#define CCR_LOOPBACK 0x02000000 + -+ /* process received frame */ -+#ifdef __ARMEB__ -+ temp = skb; -+ skb = port->rx_buff_tab[n]; -+ dma_unmap_single(&dev->dev, desc->data, -+ MAX_MRU, DMA_FROM_DEVICE); -+#else -+ dma_sync_single(&dev->dev, desc->data, -+ MAX_MRU, DMA_FROM_DEVICE); -+ memcpy_swab32((u32 *)skb->data, (u32 *)port->rx_buff_tab[n], -+ ALIGN(desc->pkt_len, 4) / 4); -+#endif -+ skb_put(skb, desc->pkt_len); ++/* HSS number, default = 0 (first) */ ++#define CCR_SECOND_HSS 0x01000000 + -+ debug_pkt(dev, "eth_poll", skb->data, skb->len); + -+ skb->protocol = eth_type_trans(skb, dev); -+ dev->last_rx = jiffies; -+ port->stat.rx_packets++; -+ port->stat.rx_bytes += skb->len; -+ netif_receive_skb(skb); ++/* hss_config, clkCR: main:10, num:10, denom:12 */ ++#define CLK42X_SPEED_EXP ((0x3FF << 22) | ( 2 << 12) | 15) /*65 KHz*/ + -+ /* put the new buffer on RX-free queue */ -+#ifdef __ARMEB__ -+ port->rx_buff_tab[n] = temp; -+ desc->data = phys; -+#endif -+ desc->buf_len = MAX_MRU; -+ desc->pkt_len = 0; -+ queue_put_desc(rxfreeq, rx_desc_phys(port, n), desc); -+ quota--; -+ received++; -+ } -+ dev->quota -= received; -+ *budget -= received; -+#if DEBUG_RX -+ printk(KERN_DEBUG "eth_poll(): end, not all work done\n"); -+#endif -+ return 1; /* not all work done */ -+} ++#define CLK42X_SPEED_512KHZ (( 130 << 22) | ( 2 << 12) | 15) ++#define CLK42X_SPEED_1536KHZ (( 43 << 22) | ( 18 << 12) | 47) ++#define CLK42X_SPEED_1544KHZ (( 43 << 22) | ( 33 << 12) | 192) ++#define CLK42X_SPEED_2048KHZ (( 32 << 22) | ( 34 << 12) | 63) ++#define CLK42X_SPEED_4096KHZ (( 16 << 22) | ( 34 << 12) | 127) ++#define CLK42X_SPEED_8192KHZ (( 8 << 22) | ( 34 << 12) | 255) + ++#define CLK46X_SPEED_512KHZ (( 130 << 22) | ( 24 << 12) | 127) ++#define CLK46X_SPEED_1536KHZ (( 43 << 22) | (152 << 12) | 383) ++#define CLK46X_SPEED_1544KHZ (( 43 << 22) | ( 66 << 12) | 385) ++#define CLK46X_SPEED_2048KHZ (( 32 << 22) | (280 << 12) | 511) ++#define CLK46X_SPEED_4096KHZ (( 16 << 22) | (280 << 12) | 1023) ++#define CLK46X_SPEED_8192KHZ (( 8 << 22) | (280 << 12) | 2047) + -+static void eth_txdone_irq(void *unused) -+{ -+ u32 phys; + -+#if DEBUG_TX -+ printk(KERN_DEBUG DRV_NAME ": eth_txdone_irq\n"); -+#endif -+ while ((phys = queue_get_entry(TXDONE_QUEUE)) != 0) { -+ u32 npe_id, n_desc; -+ struct port *port; -+ struct desc *desc; -+ int start; ++/* hss_config, LUT entries */ ++#define TDMMAP_UNASSIGNED 0 ++#define TDMMAP_HDLC 1 /* HDLC - packetized */ ++#define TDMMAP_VOICE56K 2 /* Voice56K - 7-bit channelized */ ++#define TDMMAP_VOICE64K 3 /* Voice64K - 8-bit channelized */ + -+ npe_id = phys & 3; -+ BUG_ON(npe_id >= MAX_NPES); -+ port = npe_port_tab[npe_id]; -+ BUG_ON(!port); -+ phys &= ~0x1F; /* mask out non-address bits */ -+ n_desc = (phys - tx_desc_phys(port, 0)) / sizeof(struct desc); -+ BUG_ON(n_desc >= TX_DESCS); -+ desc = tx_desc_ptr(port, n_desc); -+ debug_desc(phys, desc); ++#define TIMESLOTS 128 ++#define LUT_BITS 2 + -+ if (port->tx_buff_tab[n_desc]) { /* not the draining packet */ -+ port->stat.tx_packets++; -+ port->stat.tx_bytes += desc->pkt_len; ++/* offsets into HSS config */ ++#define HSS_CONFIG_TX_PCR 0x00 ++#define HSS_CONFIG_RX_PCR 0x04 ++#define HSS_CONFIG_CORE_CR 0x08 ++#define HSS_CONFIG_CLOCK_CR 0x0C ++#define HSS_CONFIG_TX_FCR 0x10 ++#define HSS_CONFIG_RX_FCR 0x14 ++#define HSS_CONFIG_TX_LUT 0x18 ++#define HSS_CONFIG_RX_LUT 0x38 + -+ dma_unmap_tx(port, desc); -+#if DEBUG_TX -+ printk(KERN_DEBUG "%s: eth_txdone_irq free %p\n", -+ port->netdev->name, port->tx_buff_tab[n_desc]); -+#endif -+ free_buffer_irq(port->tx_buff_tab[n_desc]); -+ port->tx_buff_tab[n_desc] = NULL; -+ } + -+ start = qmgr_stat_empty(port->plat->txreadyq); -+ queue_put_desc(port->plat->txreadyq, phys, desc); -+ if (start) { -+#if DEBUG_TX -+ printk(KERN_DEBUG "%s: eth_txdone_irq xmit ready\n", -+ port->netdev->name); -+#endif -+ netif_wake_queue(port->netdev); -+ } -+ } -+} ++/* NPE command codes */ ++/* writes the ConfigWord value to the location specified by offset */ ++#define PORT_CONFIG_WRITE 0x40 + -+static int eth_xmit(struct sk_buff *skb, struct net_device *dev) -+{ -+ struct port *port = netdev_priv(dev); -+ unsigned int txreadyq = port->plat->txreadyq; -+ int len, offset, bytes, n; -+ void *mem; -+ u32 phys; -+ struct desc *desc; ++/* triggers the NPE to load the contents of the configuration table */ ++#define PORT_CONFIG_LOAD 0x41 + -+#if DEBUG_TX -+ printk(KERN_DEBUG "%s: eth_xmit\n", dev->name); -+#endif ++/* triggers the NPE to return an HssErrorReadResponse message */ ++#define PORT_ERROR_READ 0x42 + -+ if (unlikely(skb->len > MAX_MRU)) { -+ dev_kfree_skb(skb); -+ port->stat.tx_errors++; -+ return NETDEV_TX_OK; -+ } ++/* reset NPE internal status and enable the HssChannelized operation */ ++#define CHAN_FLOW_ENABLE 0x43 ++#define CHAN_FLOW_DISABLE 0x44 ++#define CHAN_IDLE_PATTERN_WRITE 0x45 ++#define CHAN_NUM_CHANS_WRITE 0x46 ++#define CHAN_RX_BUF_ADDR_WRITE 0x47 ++#define CHAN_RX_BUF_CFG_WRITE 0x48 ++#define CHAN_TX_BLK_CFG_WRITE 0x49 ++#define CHAN_TX_BUF_ADDR_WRITE 0x4A ++#define CHAN_TX_BUF_SIZE_WRITE 0x4B ++#define CHAN_TSLOTSWITCH_ENABLE 0x4C ++#define CHAN_TSLOTSWITCH_DISABLE 0x4D ++ ++/* downloads the gainWord value for a timeslot switching channel associated ++ with bypassNum */ ++#define CHAN_TSLOTSWITCH_GCT_DOWNLOAD 0x4E ++ ++/* triggers the NPE to reset internal status and enable the HssPacketized ++ operation for the flow specified by pPipe */ ++#define PKT_PIPE_FLOW_ENABLE 0x50 ++#define PKT_PIPE_FLOW_DISABLE 0x51 ++#define PKT_NUM_PIPES_WRITE 0x52 ++#define PKT_PIPE_FIFO_SIZEW_WRITE 0x53 ++#define PKT_PIPE_HDLC_CFG_WRITE 0x54 ++#define PKT_PIPE_IDLE_PATTERN_WRITE 0x55 ++#define PKT_PIPE_RX_SIZE_WRITE 0x56 ++#define PKT_PIPE_MODE_WRITE 0x57 ++ ++/* HDLC packet status values - desc->status */ ++#define ERR_SHUTDOWN 1 /* stop or shutdown occurrance */ ++#define ERR_HDLC_ALIGN 2 /* HDLC alignment error */ ++#define ERR_HDLC_FCS 3 /* HDLC Frame Check Sum error */ ++#define ERR_RXFREE_Q_EMPTY 4 /* RX-free queue became empty while receiving ++ this packet (if buf_len < pkt_len) */ ++#define ERR_HDLC_TOO_LONG 5 /* HDLC frame size too long */ ++#define ERR_HDLC_ABORT 6 /* abort sequence received */ ++#define ERR_DISCONNECTING 7 /* disconnect is in progress */ + -+ debug_pkt(dev, "eth_xmit", skb->data, skb->len); + -+ len = skb->len; +#ifdef __ARMEB__ -+ offset = 0; /* no need to keep alignment */ -+ bytes = len; -+ mem = skb->data; ++typedef struct sk_buff buffer_t; ++#define free_buffer dev_kfree_skb ++#define free_buffer_irq dev_kfree_skb_irq +#else -+ offset = (int)skb->data & 3; /* keep 32-bit alignment */ -+ bytes = ALIGN(offset + len, 4); -+ if (!(mem = kmalloc(bytes, GFP_ATOMIC))) { -+ dev_kfree_skb(skb); -+ port->stat.tx_dropped++; -+ return NETDEV_TX_OK; -+ } -+ memcpy_swab32(mem, (u32 *)((int)skb->data & ~3), bytes / 4); -+ dev_kfree_skb(skb); ++typedef void buffer_t; ++#define free_buffer kfree ++#define free_buffer_irq kfree +#endif + -+ phys = dma_map_single(&dev->dev, mem, bytes, DMA_TO_DEVICE); -+ if (dma_mapping_error(phys)) { ++struct port { ++ struct npe *npe; ++ struct net_device *netdev; ++ struct hss_plat_info *plat; ++ buffer_t *rx_buff_tab[RX_DESCS], *tx_buff_tab[TX_DESCS]; ++ struct desc *desc_tab; /* coherent */ ++ u32 desc_tab_phys; ++ int id; ++ unsigned int clock_type, clock_rate, loopback; ++ u8 hdlc_cfg; ++}; ++ ++/* NPE message structure */ ++struct msg { +#ifdef __ARMEB__ -+ dev_kfree_skb(skb); ++ u8 cmd, unused, hss_port, index; ++ union { ++ struct { u8 data8a, data8b, data8c, data8d; }; ++ struct { u16 data16a, data16b; }; ++ struct { u32 data32; }; ++ }; +#else -+ kfree(mem); ++ u8 index, hss_port, unused, cmd; ++ union { ++ struct { u8 data8d, data8c, data8b, data8a; }; ++ struct { u16 data16b, data16a; }; ++ struct { u32 data32; }; ++ }; +#endif -+ port->stat.tx_dropped++; -+ return NETDEV_TX_OK; -+ } ++}; + -+ n = queue_get_desc(txreadyq, port, 1); -+ BUG_ON(n < 0); -+ desc = tx_desc_ptr(port, n); ++/* HDLC packet descriptor */ ++struct desc { ++ u32 next; /* pointer to next buffer, unused */ + +#ifdef __ARMEB__ -+ port->tx_buff_tab[n] = skb; ++ u16 buf_len; /* buffer length */ ++ u16 pkt_len; /* packet length */ ++ u32 data; /* pointer to data buffer in RAM */ ++ u8 status; ++ u8 error_count; ++ u16 __reserved; +#else -+ port->tx_buff_tab[n] = mem; ++ u16 pkt_len; /* packet length */ ++ u16 buf_len; /* buffer length */ ++ u32 data; /* pointer to data buffer in RAM */ ++ u16 __reserved; ++ u8 error_count; ++ u8 status; +#endif -+ desc->data = phys + offset; -+ desc->buf_len = desc->pkt_len = len; ++ u32 __reserved1[4]; ++}; + -+ /* NPE firmware pads short frames with zeros internally */ -+ wmb(); -+ queue_put_desc(TX_QUEUE(port->id), tx_desc_phys(port, n), desc); -+ dev->trans_start = jiffies; + -+ if (qmgr_stat_empty(txreadyq)) { -+#if DEBUG_TX -+ printk(KERN_DEBUG "%s: eth_xmit queue full\n", dev->name); -+#endif -+ netif_stop_queue(dev); -+ /* we could miss TX ready interrupt */ -+ if (!qmgr_stat_empty(txreadyq)) { -+#if DEBUG_TX -+ printk(KERN_DEBUG "%s: eth_xmit ready again\n", -+ dev->name); -+#endif -+ netif_wake_queue(dev); -+ } -+ } ++#define rx_desc_phys(port, n) ((port)->desc_tab_phys + \ ++ (n) * sizeof(struct desc)) ++#define rx_desc_ptr(port, n) (&(port)->desc_tab[n]) + -+#if DEBUG_TX -+ printk(KERN_DEBUG "%s: eth_xmit end\n", dev->name); -+#endif -+ return NETDEV_TX_OK; -+} ++#define tx_desc_phys(port, n) ((port)->desc_tab_phys + \ ++ ((n) + RX_DESCS) * sizeof(struct desc)) ++#define tx_desc_ptr(port, n) (&(port)->desc_tab[(n) + RX_DESCS]) + ++/***************************************************************************** ++ * global variables ++ ****************************************************************************/ + -+static struct net_device_stats *eth_stats(struct net_device *dev) ++static int ports_open; ++static struct dma_pool *dma_pool; ++ ++static const struct { ++ int tx, txdone, rx, rxfree; ++}queue_ids[2] = {{ HSS0_PKT_TX0_QUEUE, HSS0_PKT_TXDONE_QUEUE, ++ HSS0_PKT_RX_QUEUE, HSS0_PKT_RXFREE0_QUEUE }, ++ { HSS1_PKT_TX0_QUEUE, HSS1_PKT_TXDONE_QUEUE, ++ HSS1_PKT_RX_QUEUE, HSS1_PKT_RXFREE0_QUEUE }, ++}; ++ ++/***************************************************************************** ++ * utility functions ++ ****************************************************************************/ ++ ++static inline struct port* dev_to_port(struct net_device *dev) +{ -+ struct port *port = netdev_priv(dev); -+ return &port->stat; ++ return dev_to_hdlc(dev)->priv; +} + -+static void eth_set_mcast_list(struct net_device *dev) ++#ifndef __ARMEB__ ++static inline void memcpy_swab32(u32 *dest, u32 *src, int cnt) +{ -+ struct port *port = netdev_priv(dev); -+ struct dev_mc_list *mclist = dev->mc_list; -+ u8 diffs[ETH_ALEN], *addr; -+ int cnt = dev->mc_count, i; -+ -+ if ((dev->flags & IFF_PROMISC) || !mclist || !cnt) { -+ __raw_writel(DEFAULT_RX_CNTRL0 & ~RX_CNTRL0_ADDR_FLTR_EN, -+ &port->regs->rx_control[0]); -+ return; -+ } -+ -+ memset(diffs, 0, ETH_ALEN); -+ addr = mclist->dmi_addr; /* first MAC address */ ++ int i; ++ for (i = 0; i < cnt; i++) ++ dest[i] = swab32(src[i]); ++} ++#endif + -+ while (--cnt && (mclist = mclist->next)) -+ for (i = 0; i < ETH_ALEN; i++) -+ diffs[i] |= addr[i] ^ mclist->dmi_addr[i]; ++static inline void debug_pkt(struct net_device *dev, const char *func, ++ u8 *data, int len) ++{ ++#if DEBUG_PKT_BYTES ++ int i; + -+ for (i = 0; i < ETH_ALEN; i++) { -+ __raw_writel(addr[i], &port->regs->mcast_addr[i]); -+ __raw_writel(~diffs[i], &port->regs->mcast_mask[i]); ++ printk(KERN_DEBUG "%s: %s(%i) ", dev->name, func, len); ++ for (i = 0; i < len; i++) { ++ if (i >= DEBUG_PKT_BYTES) ++ break; ++ printk("%s%02X", !(i % 4) ? " " : "", data[i]); + } -+ -+ __raw_writel(DEFAULT_RX_CNTRL0 | RX_CNTRL0_ADDR_FLTR_EN, -+ &port->regs->rx_control[0]); ++ printk("\n"); ++#endif +} + + -+static int eth_ioctl(struct net_device *dev, struct ifreq *req, int cmd) ++static inline void debug_desc(u32 phys, struct desc *desc) +{ -+ struct port *port = netdev_priv(dev); -+ unsigned int duplex_chg; -+ int err; -+ -+ if (!netif_running(dev)) -+ return -EINVAL; -+ err = generic_mii_ioctl(&port->mii, if_mii(req), cmd, &duplex_chg); -+ if (duplex_chg) -+ eth_set_duplex(port); -+ return err; ++#if DEBUG_DESC ++ printk(KERN_DEBUG "%X: %X %3X %3X %08X %X %X\n", ++ phys, desc->next, desc->buf_len, desc->pkt_len, ++ desc->data, desc->status, desc->error_count); ++#endif +} + -+ -+static int request_queues(struct port *port) ++static inline void debug_queue(unsigned int queue, int is_get, u32 phys) +{ -+ int err; -+ -+ err = qmgr_request_queue(RXFREE_QUEUE(port->id), RX_DESCS, 0, 0); -+ if (err) -+ return err; -+ -+ err = qmgr_request_queue(port->plat->rxq, RX_DESCS, 0, 0); -+ if (err) -+ goto rel_rxfree; -+ -+ err = qmgr_request_queue(TX_QUEUE(port->id), TX_DESCS, 0, 0); -+ if (err) -+ goto rel_rx; ++#if DEBUG_QUEUES ++ static struct { ++ int queue; ++ char *name; ++ } names[] = { ++ { HSS0_PKT_TX0_QUEUE, "TX#0 " }, ++ { HSS0_PKT_TXDONE_QUEUE, "TX-done#0 " }, ++ { HSS0_PKT_RX_QUEUE, "RX#0 " }, ++ { HSS0_PKT_RXFREE0_QUEUE, "RX-free#0 " }, ++ { HSS1_PKT_TX0_QUEUE, "TX#1 " }, ++ { HSS1_PKT_TXDONE_QUEUE, "TX-done#1 " }, ++ { HSS1_PKT_RX_QUEUE, "RX#1 " }, ++ { HSS1_PKT_RXFREE0_QUEUE, "RX-free#1 " }, ++ }; ++ int i; + -+ err = qmgr_request_queue(port->plat->txreadyq, TX_DESCS, 0, 0); -+ if (err) -+ goto rel_tx; ++ for (i = 0; i < ARRAY_SIZE(names); i++) ++ if (names[i].queue == queue) ++ break; + -+ /* TX-done queue handles skbs sent out by the NPEs */ -+ if (!ports_open) { -+ err = qmgr_request_queue(TXDONE_QUEUE, TXDONE_QUEUE_LEN, 0, 0); -+ if (err) -+ goto rel_txready; -+ } -+ return 0; ++ printk(KERN_DEBUG "Queue %i %s%s %X\n", queue, ++ i < ARRAY_SIZE(names) ? names[i].name : "", ++ is_get ? "->" : "<-", phys); ++#endif ++} + -+rel_txready: -+ qmgr_release_queue(port->plat->txreadyq); -+rel_tx: -+ qmgr_release_queue(TX_QUEUE(port->id)); -+rel_rx: -+ qmgr_release_queue(port->plat->rxq); -+rel_rxfree: -+ qmgr_release_queue(RXFREE_QUEUE(port->id)); -+ printk(KERN_DEBUG "%s: unable to request hardware queues\n", -+ port->netdev->name); -+ return err; ++static inline u32 queue_get_entry(unsigned int queue) ++{ ++ u32 phys = qmgr_get_entry(queue); ++ debug_queue(queue, 1, phys); ++ return phys; +} + -+static void release_queues(struct port *port) ++static inline int queue_get_desc(unsigned int queue, struct port *port, ++ int is_tx) +{ -+ qmgr_release_queue(RXFREE_QUEUE(port->id)); -+ qmgr_release_queue(port->plat->rxq); -+ qmgr_release_queue(TX_QUEUE(port->id)); -+ qmgr_release_queue(port->plat->txreadyq); ++ u32 phys, tab_phys, n_desc; ++ struct desc *tab; + -+ if (!ports_open) -+ qmgr_release_queue(TXDONE_QUEUE); ++ if (!(phys = queue_get_entry(queue))) ++ return -1; ++ ++ BUG_ON(phys & 0x1F); ++ tab_phys = is_tx ? tx_desc_phys(port, 0) : rx_desc_phys(port, 0); ++ tab = is_tx ? tx_desc_ptr(port, 0) : rx_desc_ptr(port, 0); ++ n_desc = (phys - tab_phys) / sizeof(struct desc); ++ BUG_ON(n_desc >= (is_tx ? TX_DESCS : RX_DESCS)); ++ debug_desc(phys, &tab[n_desc]); ++ BUG_ON(tab[n_desc].next); ++ return n_desc; +} + -+static int init_queues(struct port *port) ++static inline void queue_put_desc(unsigned int queue, u32 phys, ++ struct desc *desc) +{ -+ int i; -+ -+ if (!ports_open) -+ if (!(dma_pool = dma_pool_create(DRV_NAME, NULL, -+ POOL_ALLOC_SIZE, 32, 0))) -+ return -ENOMEM; ++ debug_queue(queue, 0, phys); ++ debug_desc(phys, desc); ++ BUG_ON(phys & 0x1F); ++ qmgr_put_entry(queue, phys); ++ BUG_ON(qmgr_stat_overflow(queue)); ++} + -+ if (!(port->desc_tab = dma_pool_alloc(dma_pool, GFP_KERNEL, -+ &port->desc_tab_phys))) -+ return -ENOMEM; -+ memset(port->desc_tab, 0, POOL_ALLOC_SIZE); -+ memset(port->rx_buff_tab, 0, sizeof(port->rx_buff_tab)); /* tables */ -+ memset(port->tx_buff_tab, 0, sizeof(port->tx_buff_tab)); + -+ /* Setup RX buffers */ -+ for (i = 0; i < RX_DESCS; i++) { -+ struct desc *desc = rx_desc_ptr(port, i); -+ buffer_t *buff; -+ void *data; ++static inline void dma_unmap_tx(struct port *port, struct desc *desc) ++{ +#ifdef __ARMEB__ -+ if (!(buff = netdev_alloc_skb(port->netdev, MAX_MRU))) -+ return -ENOMEM; -+ data = buff->data; ++ dma_unmap_single(&port->netdev->dev, desc->data, ++ desc->buf_len, DMA_TO_DEVICE); +#else -+ if (!(buff = kmalloc(MAX_MRU, GFP_KERNEL))) -+ return -ENOMEM; -+ data = buff; ++ dma_unmap_single(&port->netdev->dev, desc->data & ~3, ++ ALIGN((desc->data & 3) + desc->buf_len, 4), ++ DMA_TO_DEVICE); +#endif -+ desc->buf_len = MAX_MRU; -+ desc->data = dma_map_single(&port->netdev->dev, data, -+ MAX_MRU, DMA_FROM_DEVICE); -+ if (dma_mapping_error(desc->data)) { -+ free_buffer(buff); -+ return -EIO; -+ } -+ port->rx_buff_tab[i] = buff; -+ } ++} + -+ return 0; ++ ++static void hss_hdlc_set_carrier(void *pdev, int carrier) ++{ ++ struct net_device *dev = pdev; ++ if (carrier) ++ netif_carrier_on(dev); ++ else ++ netif_carrier_off(dev); +} + -+static void destroy_queues(struct port *port) ++static void hss_hdlc_rx_irq(void *pdev) +{ -+ int i; ++ struct net_device *dev = pdev; ++ struct port *port = dev_to_port(dev); + -+ if (port->desc_tab) { -+ for (i = 0; i < RX_DESCS; i++) { -+ struct desc *desc = rx_desc_ptr(port, i); -+ buffer_t *buff = port->rx_buff_tab[i]; -+ if (buff) { -+ dma_unmap_single(&port->netdev->dev, -+ desc->data, MAX_MRU, -+ DMA_FROM_DEVICE); -+ free_buffer(buff); -+ } -+ } -+ for (i = 0; i < TX_DESCS; i++) { -+ struct desc *desc = tx_desc_ptr(port, i); -+ buffer_t *buff = port->tx_buff_tab[i]; -+ if (buff) { -+ dma_unmap_tx(port, desc); -+ free_buffer(buff); -+ } -+ } -+ dma_pool_free(dma_pool, port->desc_tab, port->desc_tab_phys); -+ port->desc_tab = NULL; -+ } -+ -+ if (!ports_open && dma_pool) { -+ dma_pool_destroy(dma_pool); -+ dma_pool = NULL; -+ } ++#if DEBUG_RX ++ printk(KERN_DEBUG "%s: hss_hdlc_rx_irq\n", dev->name); ++#endif ++ qmgr_disable_irq(queue_ids[port->id].rx); ++ netif_rx_schedule(dev); +} + -+static int eth_open(struct net_device *dev) ++static int hss_hdlc_poll(struct net_device *dev, int *budget) +{ -+ struct port *port = netdev_priv(dev); -+ struct npe *npe = port->npe; -+ struct msg msg; -+ int i, err; -+ -+ if (!npe_running(npe)) { -+ err = npe_load_firmware(npe, npe_name(npe), &dev->dev); -+ if (err) -+ return err; -+ -+ if (npe_recv_message(npe, &msg, "ETH_GET_STATUS")) { -+ printk(KERN_ERR "%s: %s not responding\n", dev->name, -+ npe_name(npe)); -+ return -EIO; -+ } -+ } -+ -+ mdio_write(dev, port->plat->phy, MII_BMCR, port->mii_bmcr); ++ struct port *port = dev_to_port(dev); ++ unsigned int rxq = queue_ids[port->id].rx; ++ unsigned int rxfreeq = queue_ids[port->id].rxfree; ++ struct net_device_stats *stats = hdlc_stats(dev); ++ int quota = dev->quota, received = 0; + -+ memset(&msg, 0, sizeof(msg)); -+ msg.cmd = NPE_VLAN_SETRXQOSENTRY; -+ msg.eth_id = port->id; -+ msg.byte5 = port->plat->rxq | 0x80; -+ msg.byte7 = port->plat->rxq << 4; -+ for (i = 0; i < 8; i++) { -+ msg.byte3 = i; -+ if (npe_send_recv_message(port->npe, &msg, "ETH_SET_RXQ")) -+ return -EIO; -+ } ++#if DEBUG_RX ++ printk(KERN_DEBUG "%s: hss_hdlc_poll\n", dev->name); ++#endif + -+ msg.cmd = NPE_EDB_SETPORTADDRESS; -+ msg.eth_id = PHYSICAL_ID(port->id); -+ msg.byte2 = dev->dev_addr[0]; -+ msg.byte3 = dev->dev_addr[1]; -+ msg.byte4 = dev->dev_addr[2]; -+ msg.byte5 = dev->dev_addr[3]; -+ msg.byte6 = dev->dev_addr[4]; -+ msg.byte7 = dev->dev_addr[5]; -+ if (npe_send_recv_message(port->npe, &msg, "ETH_SET_MAC")) -+ return -EIO; ++ while (quota) { ++ struct sk_buff *skb; ++ struct desc *desc; ++ int n; ++#ifdef __ARMEB__ ++ struct sk_buff *temp; ++ u32 phys; ++#endif + -+ memset(&msg, 0, sizeof(msg)); -+ msg.cmd = NPE_FW_SETFIREWALLMODE; -+ msg.eth_id = port->id; -+ if (npe_send_recv_message(port->npe, &msg, "ETH_SET_FIREWALL_MODE")) -+ return -EIO; ++ if ((n = queue_get_desc(rxq, port, 0)) < 0) { ++ dev->quota -= received; /* No packet received */ ++ *budget -= received; ++ received = 0; ++#if DEBUG_RX ++ printk(KERN_DEBUG "%s: hss_hdlc_poll" ++ " netif_rx_complete\n", dev->name); ++#endif ++ netif_rx_complete(dev); ++ qmgr_enable_irq(rxq); ++ if (!qmgr_stat_empty(rxq) && ++ netif_rx_reschedule(dev, 0)) { ++#if DEBUG_RX ++ printk(KERN_DEBUG "%s: hss_hdlc_poll" ++ " netif_rx_reschedule successed\n", ++ dev->name); ++#endif ++ qmgr_disable_irq(rxq); ++ continue; ++ } ++#if DEBUG_RX ++ printk(KERN_DEBUG "%s: hss_hdlc_poll all done\n", ++ dev->name); ++#endif ++ return 0; /* all work done */ ++ } + -+ if ((err = request_queues(port)) != 0) -+ return err; ++ desc = rx_desc_ptr(port, n); + -+ if ((err = init_queues(port)) != 0) { -+ destroy_queues(port); -+ release_queues(port); -+ return err; -+ } ++ if (desc->error_count) /* FIXME - remove printk */ ++ printk(KERN_DEBUG "%s: hss_hdlc_poll status 0x%02X" ++ " errors %u\n", dev->name, desc->status, ++ desc->error_count); + -+ for (i = 0; i < ETH_ALEN; i++) -+ __raw_writel(dev->dev_addr[i], &port->regs->hw_addr[i]); -+ __raw_writel(0x08, &port->regs->random_seed); -+ __raw_writel(0x12, &port->regs->partial_empty_threshold); -+ __raw_writel(0x30, &port->regs->partial_full_threshold); -+ __raw_writel(0x08, &port->regs->tx_start_bytes); -+ __raw_writel(0x15, &port->regs->tx_deferral); -+ __raw_writel(0x08, &port->regs->tx_2part_deferral[0]); -+ __raw_writel(0x07, &port->regs->tx_2part_deferral[1]); -+ __raw_writel(0x80, &port->regs->slot_time); -+ __raw_writel(0x01, &port->regs->int_clock_threshold); ++ skb = NULL; ++ switch (desc->status) { ++ case 0: ++#ifdef __ARMEB__ ++ if ((skb = netdev_alloc_skb(dev, RX_SIZE)) != NULL) { ++ phys = dma_map_single(&dev->dev, skb->data, ++ RX_SIZE, ++ DMA_FROM_DEVICE); ++ if (dma_mapping_error(phys)) { ++ dev_kfree_skb(skb); ++ skb = NULL; ++ } ++ } ++#else ++ skb = netdev_alloc_skb(dev, desc->pkt_len); ++#endif ++ if (!skb) ++ stats->rx_dropped++; ++ break; ++ case ERR_HDLC_ALIGN: ++ case ERR_HDLC_ABORT: ++ stats->rx_frame_errors++; ++ stats->rx_errors++; ++ break; ++ case ERR_HDLC_FCS: ++ stats->rx_crc_errors++; ++ stats->rx_errors++; ++ break; ++ case ERR_HDLC_TOO_LONG: ++ stats->rx_length_errors++; ++ stats->rx_errors++; ++ break; ++ default: /* FIXME - remove printk */ ++ printk(KERN_ERR "%s: hss_hdlc_poll: status 0x%02X" ++ " errors %u\n", dev->name, desc->status, ++ desc->error_count); ++ stats->rx_errors++; ++ } + -+ /* Populate queues with buffers, no failure after this point */ -+ for (i = 0; i < TX_DESCS; i++) -+ queue_put_desc(port->plat->txreadyq, -+ tx_desc_phys(port, i), tx_desc_ptr(port, i)); ++ if (!skb) { ++ /* put the desc back on RX-ready queue */ ++ desc->buf_len = RX_SIZE; ++ desc->pkt_len = desc->status = 0; ++ queue_put_desc(rxfreeq, rx_desc_phys(port, n), desc); ++ continue; ++ } + -+ for (i = 0; i < RX_DESCS; i++) -+ queue_put_desc(RXFREE_QUEUE(port->id), -+ rx_desc_phys(port, i), rx_desc_ptr(port, i)); ++ /* process received frame */ ++#ifdef __ARMEB__ ++ temp = skb; ++ skb = port->rx_buff_tab[n]; ++ dma_unmap_single(&dev->dev, desc->data, ++ RX_SIZE, DMA_FROM_DEVICE); ++#else ++ dma_sync_single(&dev->dev, desc->data, ++ RX_SIZE, DMA_FROM_DEVICE); ++ memcpy_swab32((u32 *)skb->data, (u32 *)port->rx_buff_tab[n], ++ ALIGN(desc->pkt_len, 4) / 4); ++#endif ++ skb_put(skb, desc->pkt_len); + -+ __raw_writel(TX_CNTRL1_RETRIES, &port->regs->tx_control[1]); -+ __raw_writel(DEFAULT_TX_CNTRL0, &port->regs->tx_control[0]); -+ __raw_writel(0, &port->regs->rx_control[1]); -+ __raw_writel(DEFAULT_RX_CNTRL0, &port->regs->rx_control[0]); ++ debug_pkt(dev, "hss_hdlc_poll", skb->data, skb->len); + -+ phy_check_media(port, 1); -+ eth_set_mcast_list(dev); -+ netif_start_queue(dev); -+ schedule_delayed_work(&port->mdio_thread, MDIO_INTERVAL); ++ skb->protocol = hdlc_type_trans(skb, dev); ++ dev->last_rx = jiffies; ++ stats->rx_packets++; ++ stats->rx_bytes += skb->len; ++ netif_receive_skb(skb); + -+ qmgr_set_irq(port->plat->rxq, QUEUE_IRQ_SRC_NOT_EMPTY, -+ eth_rx_irq, dev); -+ if (!ports_open) { -+ qmgr_set_irq(TXDONE_QUEUE, QUEUE_IRQ_SRC_NOT_EMPTY, -+ eth_txdone_irq, NULL); -+ qmgr_enable_irq(TXDONE_QUEUE); ++ /* put the new buffer on RX-free queue */ ++#ifdef __ARMEB__ ++ port->rx_buff_tab[n] = temp; ++ desc->data = phys; ++#endif ++ desc->buf_len = RX_SIZE; ++ desc->pkt_len = 0; ++ queue_put_desc(rxfreeq, rx_desc_phys(port, n), desc); ++ quota--; ++ received++; + } -+ ports_open++; -+ netif_rx_schedule(dev); /* we may already have RX data, enables IRQ */ -+ return 0; ++ dev->quota -= received; ++ *budget -= received; ++#if DEBUG_RX ++ printk(KERN_DEBUG "hss_hdlc_poll: end, not all work done\n"); ++#endif ++ return 1; /* not all work done */ +} + -+static int eth_close(struct net_device *dev) ++ ++static void hss_hdlc_txdone_irq(void *pdev) +{ -+ struct port *port = netdev_priv(dev); -+ struct msg msg; -+ int buffs = RX_DESCS; /* allocated RX buffers */ -+ int i; ++ struct net_device *dev = pdev; ++ struct port *port = dev_to_port(dev); ++ struct net_device_stats *stats = hdlc_stats(dev); ++ int n_desc; + -+ ports_open--; -+ qmgr_disable_irq(port->plat->rxq); -+ netif_stop_queue(dev); ++#if DEBUG_TX ++ printk(KERN_DEBUG DRV_NAME ": hss_hdlc_txdone_irq\n"); ++#endif ++ while ((n_desc = queue_get_desc(queue_ids[port->id].txdone, ++ port, 1)) >= 0) { ++ struct desc *desc; ++ int start; + -+ while (queue_get_desc(RXFREE_QUEUE(port->id), port, 0) >= 0) -+ buffs--; -+ -+ memset(&msg, 0, sizeof(msg)); -+ msg.cmd = NPE_SETLOOPBACK_MODE; -+ msg.eth_id = port->id; -+ msg.byte3 = 1; -+ if (npe_send_recv_message(port->npe, &msg, "ETH_ENABLE_LOOPBACK")) -+ printk(KERN_CRIT "%s: unable to enable loopback\n", dev->name); ++ desc = tx_desc_ptr(port, n_desc); + -+ i = 0; -+ do { /* drain RX buffers */ -+ while (queue_get_desc(port->plat->rxq, port, 0) >= 0) -+ buffs--; -+ if (!buffs) -+ break; -+ if (qmgr_stat_empty(TX_QUEUE(port->id))) { -+ /* we have to inject some packet */ -+ struct desc *desc; -+ u32 phys; -+ int n = queue_get_desc(port->plat->txreadyq, port, 1); -+ BUG_ON(n < 0); -+ desc = tx_desc_ptr(port, n); -+ phys = tx_desc_phys(port, n); -+ desc->buf_len = desc->pkt_len = 1; -+ wmb(); -+ queue_put_desc(TX_QUEUE(port->id), phys, desc); -+ } -+ udelay(1); -+ } while (++i < MAX_CLOSE_WAIT); ++ stats->tx_packets++; ++ stats->tx_bytes += desc->pkt_len; + -+ if (buffs) -+ printk(KERN_CRIT "%s: unable to drain RX queue, %i buffer(s)" -+ " left in NPE\n", dev->name, buffs); -+#if DEBUG_CLOSE -+ if (!buffs) -+ printk(KERN_DEBUG "Draining RX queue took %i cycles\n", i); ++ dma_unmap_tx(port, desc); ++#if DEBUG_TX ++ printk(KERN_DEBUG "%s: hss_hdlc_txdone_irq free %p\n", ++ port->netdev->name, port->tx_buff_tab[n_desc]); +#endif ++ free_buffer_irq(port->tx_buff_tab[n_desc]); ++ port->tx_buff_tab[n_desc] = NULL; + -+ buffs = TX_DESCS; -+ while (queue_get_desc(TX_QUEUE(port->id), port, 1) >= 0) -+ buffs--; /* cancel TX */ -+ -+ i = 0; -+ do { -+ while (queue_get_desc(port->plat->txreadyq, port, 1) >= 0) -+ buffs--; -+ if (!buffs) -+ break; -+ } while (++i < MAX_CLOSE_WAIT); -+ -+ if (buffs) -+ printk(KERN_CRIT "%s: unable to drain TX queue, %i buffer(s) " -+ "left in NPE\n", dev->name, buffs); -+#if DEBUG_CLOSE -+ if (!buffs) -+ printk(KERN_DEBUG "Draining TX queues took %i cycles\n", i); ++ start = qmgr_stat_empty(port->plat->txreadyq); ++ queue_put_desc(port->plat->txreadyq, ++ tx_desc_phys(port, n_desc), desc); ++ if (start) { ++#if DEBUG_TX ++ printk(KERN_DEBUG "%s: hss_hdlc_txdone_irq xmit" ++ " ready\n", port->netdev->name); +#endif -+ -+ msg.byte3 = 0; -+ if (npe_send_recv_message(port->npe, &msg, "ETH_DISABLE_LOOPBACK")) -+ printk(KERN_CRIT "%s: unable to disable loopback\n", -+ dev->name); -+ -+ port->mii_bmcr = mdio_read(dev, port->plat->phy, MII_BMCR) & -+ ~(BMCR_RESET | BMCR_PDOWN); /* may have been altered */ -+ mdio_write(dev, port->plat->phy, MII_BMCR, -+ port->mii_bmcr | BMCR_PDOWN); -+ -+ if (!ports_open) -+ qmgr_disable_irq(TXDONE_QUEUE); -+ cancel_rearming_delayed_work(&port->mdio_thread); -+ destroy_queues(port); -+ release_queues(port); -+ return 0; ++ netif_wake_queue(port->netdev); ++ } ++ } +} + -+static int __devinit eth_init_one(struct platform_device *pdev) ++static int hss_hdlc_xmit(struct sk_buff *skb, struct net_device *dev) +{ -+ struct port *port; -+ struct net_device *dev; -+ struct eth_plat_info *plat = pdev->dev.platform_data; -+ u32 regs_phys; -+ int err; -+ -+ if (!(dev = alloc_etherdev(sizeof(struct port)))) -+ return -ENOMEM; ++ struct port *port = dev_to_port(dev); ++ struct net_device_stats *stats = hdlc_stats(dev); ++ unsigned int txreadyq = port->plat->txreadyq; ++ int len, offset, bytes, n; ++ void *mem; ++ u32 phys; ++ struct desc *desc; + -+ SET_MODULE_OWNER(dev); -+ SET_NETDEV_DEV(dev, &pdev->dev); -+ port = netdev_priv(dev); -+ port->netdev = dev; -+ port->id = pdev->id; ++#if DEBUG_TX ++ printk(KERN_DEBUG "%s: hss_hdlc_xmit\n", dev->name); ++#endif + -+ switch (port->id) { -+ case IXP4XX_ETH_NPEA: -+ port->regs = (struct eth_regs __iomem *)IXP4XX_EthA_BASE_VIRT; -+ regs_phys = IXP4XX_EthA_BASE_PHYS; -+ break; -+ case IXP4XX_ETH_NPEB: -+ port->regs = (struct eth_regs __iomem *)IXP4XX_EthB_BASE_VIRT; -+ regs_phys = IXP4XX_EthB_BASE_PHYS; -+ break; -+ case IXP4XX_ETH_NPEC: -+ port->regs = (struct eth_regs __iomem *)IXP4XX_EthC_BASE_VIRT; -+ regs_phys = IXP4XX_EthC_BASE_PHYS; -+ break; -+ default: -+ err = -ENOSYS; -+ goto err_free; ++ if (unlikely(skb->len > HDLC_MAX_MRU)) { ++ dev_kfree_skb(skb); ++ stats->tx_errors++; ++ return NETDEV_TX_OK; + } + -+ dev->open = eth_open; -+ dev->hard_start_xmit = eth_xmit; -+ dev->poll = eth_poll; -+ dev->stop = eth_close; -+ dev->get_stats = eth_stats; -+ dev->do_ioctl = eth_ioctl; -+ dev->set_multicast_list = eth_set_mcast_list; -+ dev->weight = 16; -+ dev->tx_queue_len = 100; ++ debug_pkt(dev, "hss_hdlc_xmit", skb->data, skb->len); + -+ if (!(port->npe = npe_request(NPE_ID(port->id)))) { -+ err = -EIO; -+ goto err_free; ++ len = skb->len; ++#ifdef __ARMEB__ ++ offset = 0; /* no need to keep alignment */ ++ bytes = len; ++ mem = skb->data; ++#else ++ offset = (int)skb->data & 3; /* keep 32-bit alignment */ ++ bytes = ALIGN(offset + len, 4); ++ if (!(mem = kmalloc(bytes, GFP_ATOMIC))) { ++ dev_kfree_skb(skb); ++ stats->tx_dropped++; ++ return NETDEV_TX_OK; + } ++ memcpy_swab32(mem, (u32 *)((int)skb->data & ~3), bytes / 4); ++ dev_kfree_skb(skb); ++#endif + -+ if (register_netdev(dev)) { -+ err = -EIO; -+ goto err_npe_rel; ++ phys = dma_map_single(&dev->dev, mem, bytes, DMA_TO_DEVICE); ++ if (dma_mapping_error(phys)) { ++#ifdef __ARMEB__ ++ dev_kfree_skb(skb); ++#else ++ kfree(mem); ++#endif ++ stats->tx_dropped++; ++ return NETDEV_TX_OK; + } + -+ port->mem_res = request_mem_region(regs_phys, REGS_SIZE, dev->name); -+ if (!port->mem_res) { -+ err = -EBUSY; -+ goto err_unreg; -+ } ++ n = queue_get_desc(txreadyq, port, 1); ++ BUG_ON(n < 0); ++ desc = tx_desc_ptr(port, n); + -+ port->plat = plat; -+ npe_port_tab[NPE_ID(port->id)] = port; -+ memcpy(dev->dev_addr, plat->hwaddr, ETH_ALEN); ++#ifdef __ARMEB__ ++ port->tx_buff_tab[n] = skb; ++#else ++ port->tx_buff_tab[n] = mem; ++#endif ++ desc->data = phys + offset; ++ desc->buf_len = desc->pkt_len = len; + -+ platform_set_drvdata(pdev, dev); ++ wmb(); ++ queue_put_desc(queue_ids[port->id].tx, tx_desc_phys(port, n), desc); ++ dev->trans_start = jiffies; + -+ __raw_writel(DEFAULT_CORE_CNTRL | CORE_RESET, -+ &port->regs->core_control); -+ udelay(50); -+ __raw_writel(DEFAULT_CORE_CNTRL, &port->regs->core_control); -+ udelay(50); ++ if (qmgr_stat_empty(txreadyq)) { ++#if DEBUG_TX ++ printk(KERN_DEBUG "%s: hss_hdlc_xmit queue full\n", dev->name); ++#endif ++ netif_stop_queue(dev); ++ /* we could miss TX ready interrupt */ ++ if (!qmgr_stat_empty(txreadyq)) { ++#if DEBUG_TX ++ printk(KERN_DEBUG "%s: hss_hdlc_xmit ready again\n", ++ dev->name); ++#endif ++ netif_wake_queue(dev); ++ } ++ } + -+ port->mii.dev = dev; -+ port->mii.mdio_read = mdio_read; -+ port->mii.mdio_write = mdio_write; -+ port->mii.phy_id = plat->phy; -+ port->mii.phy_id_mask = 0x1F; -+ port->mii.reg_num_mask = 0x1F; ++#if DEBUG_TX ++ printk(KERN_DEBUG "%s: hss_hdlc_xmit end\n", dev->name); ++#endif ++ return NETDEV_TX_OK; ++} + -+ printk(KERN_INFO "%s: MII PHY %i on %s\n", dev->name, plat->phy, -+ npe_name(port->npe)); + -+ phy_reset(dev, plat->phy); -+ port->mii_bmcr = mdio_read(dev, plat->phy, MII_BMCR) & -+ ~(BMCR_RESET | BMCR_PDOWN); -+ mdio_write(dev, plat->phy, MII_BMCR, port->mii_bmcr | BMCR_PDOWN); ++static int request_hdlc_queues(struct port *port) ++{ ++ int err; + -+ INIT_DELAYED_WORK(&port->mdio_thread, mdio_thread); -+ return 0; ++ err = qmgr_request_queue(queue_ids[port->id].rxfree, RX_DESCS, 0, 0); ++ if (err) ++ return err; + -+err_unreg: -+ unregister_netdev(dev); -+err_npe_rel: -+ npe_release(port->npe); -+err_free: -+ free_netdev(dev); -+ return err; -+} ++ err = qmgr_request_queue(queue_ids[port->id].rx, RX_DESCS, 0, 0); ++ if (err) ++ goto rel_rxfree; + -+static int __devexit eth_remove_one(struct platform_device *pdev) -+{ -+ struct net_device *dev = platform_get_drvdata(pdev); -+ struct port *port = netdev_priv(dev); ++ err = qmgr_request_queue(queue_ids[port->id].tx, TX_DESCS, 0, 0); ++ if (err) ++ goto rel_rx; + -+ unregister_netdev(dev); -+ npe_port_tab[NPE_ID(port->id)] = NULL; -+ platform_set_drvdata(pdev, NULL); -+ npe_release(port->npe); -+ release_resource(port->mem_res); -+ free_netdev(dev); ++ err = qmgr_request_queue(port->plat->txreadyq, TX_DESCS, 0, 0); ++ if (err) ++ goto rel_tx; ++ ++ err = qmgr_request_queue(queue_ids[port->id].txdone, TX_DESCS, 0, 0); ++ if (err) ++ goto rel_txready; + return 0; -+} + -+static struct platform_driver drv = { -+ .driver.name = DRV_NAME, -+ .probe = eth_init_one, -+ .remove = eth_remove_one, -+}; ++rel_txready: ++ qmgr_release_queue(port->plat->txreadyq); ++rel_tx: ++ qmgr_release_queue(queue_ids[port->id].tx); ++rel_rx: ++ qmgr_release_queue(queue_ids[port->id].rx); ++rel_rxfree: ++ qmgr_release_queue(queue_ids[port->id].rxfree); ++ printk(KERN_DEBUG "%s: unable to request hardware queues\n", ++ port->netdev->name); ++ return err; ++} + -+static int __init eth_init_module(void) ++static void release_hdlc_queues(struct port *port) +{ -+ if (!(ixp4xx_read_feature_bits() & IXP4XX_FEATURE_NPEB_ETH0)) -+ return -ENOSYS; -+ -+ /* All MII PHY accesses use NPE-B Ethernet registers */ -+ spin_lock_init(&mdio_lock); -+ mdio_regs = (struct eth_regs __iomem *)IXP4XX_EthB_BASE_VIRT; -+ __raw_writel(DEFAULT_CORE_CNTRL, &mdio_regs->core_control); -+ -+ return platform_driver_register(&drv); ++ qmgr_release_queue(queue_ids[port->id].rxfree); ++ qmgr_release_queue(queue_ids[port->id].rx); ++ qmgr_release_queue(queue_ids[port->id].txdone); ++ qmgr_release_queue(queue_ids[port->id].tx); ++ qmgr_release_queue(port->plat->txreadyq); +} + -+static void __exit eth_cleanup_module(void) ++static int init_hdlc_queues(struct port *port) +{ -+ platform_driver_unregister(&drv); -+} ++ int i; + -+MODULE_AUTHOR("Krzysztof Halasa"); -+MODULE_DESCRIPTION("Intel IXP4xx Ethernet driver"); -+MODULE_LICENSE("GPL v2"); -+module_init(eth_init_module); -+module_exit(eth_cleanup_module); -diff --git a/drivers/net/wan/Kconfig b/drivers/net/wan/Kconfig -index a3df09e..94e7aa7 100644 ---- a/drivers/net/wan/Kconfig -+++ b/drivers/net/wan/Kconfig -@@ -334,6 +334,15 @@ config DSCC4_PCI_RST - - Say Y if your card supports this feature. - -+config IXP4XX_HSS -+ tristate "IXP4xx HSS (synchronous serial port) support" -+ depends on HDLC && ARM && ARCH_IXP4XX -+ select IXP4XX_NPE -+ select IXP4XX_QMGR -+ help -+ Say Y here if you want to use built-in HSS ports -+ on IXP4xx processor. ++ if (!ports_open) ++ if (!(dma_pool = dma_pool_create(DRV_NAME, NULL, ++ POOL_ALLOC_SIZE, 32, 0))) ++ return -ENOMEM; + - config DLCI - tristate "Frame Relay DLCI support" - ---help--- -diff --git a/drivers/net/wan/Makefile b/drivers/net/wan/Makefile -index d61fef3..1b1d116 100644 ---- a/drivers/net/wan/Makefile -+++ b/drivers/net/wan/Makefile -@@ -42,6 +42,7 @@ obj-$(CONFIG_C101) += c101.o - obj-$(CONFIG_WANXL) += wanxl.o - obj-$(CONFIG_PCI200SYN) += pci200syn.o - obj-$(CONFIG_PC300TOO) += pc300too.o -+obj-$(CONFIG_IXP4XX_HSS) += ixp4xx_hss.o - - clean-files := wanxlfw.inc - $(obj)/wanxl.o: $(obj)/wanxlfw.inc -diff --git a/drivers/net/wan/ixp4xx_hss.c b/drivers/net/wan/ixp4xx_hss.c -new file mode 100644 -index 0000000..c4cdace ---- /dev/null -+++ b/drivers/net/wan/ixp4xx_hss.c -@@ -0,0 +1,1270 @@ -+/* -+ * Intel IXP4xx HSS (synchronous serial port) driver for Linux -+ * -+ * Copyright (C) 2007 Krzysztof Halasa -+ * -+ * This program is free software; you can redistribute it and/or modify it -+ * under the terms of version 2 of the GNU General Public License -+ * as published by the Free Software Foundation. -+ */ ++ if (!(port->desc_tab = dma_pool_alloc(dma_pool, GFP_KERNEL, ++ &port->desc_tab_phys))) ++ return -ENOMEM; ++ memset(port->desc_tab, 0, POOL_ALLOC_SIZE); ++ memset(port->rx_buff_tab, 0, sizeof(port->rx_buff_tab)); /* tables */ ++ memset(port->tx_buff_tab, 0, sizeof(port->tx_buff_tab)); + -+#include -+#include -+#include -+#include -+#include -+#include -+#include -+#include ++ /* Setup RX buffers */ ++ for (i = 0; i < RX_DESCS; i++) { ++ struct desc *desc = rx_desc_ptr(port, i); ++ buffer_t *buff; ++ void *data; ++#ifdef __ARMEB__ ++ if (!(buff = netdev_alloc_skb(port->netdev, RX_SIZE))) ++ return -ENOMEM; ++ data = buff->data; ++#else ++ if (!(buff = kmalloc(RX_SIZE, GFP_KERNEL))) ++ return -ENOMEM; ++ data = buff; ++#endif ++ desc->buf_len = RX_SIZE; ++ desc->data = dma_map_single(&port->netdev->dev, data, ++ RX_SIZE, DMA_FROM_DEVICE); ++ if (dma_mapping_error(desc->data)) { ++ free_buffer(buff); ++ return -EIO; ++ } ++ port->rx_buff_tab[i] = buff; ++ } + -+#define DEBUG_QUEUES 0 -+#define DEBUG_DESC 0 -+#define DEBUG_RX 0 -+#define DEBUG_TX 0 -+#define DEBUG_PKT_BYTES 0 -+#define DEBUG_CLOSE 0 ++ return 0; ++} + -+#define DRV_NAME "ixp4xx_hss" ++static void destroy_hdlc_queues(struct port *port) ++{ ++ int i; + -+#define PKT_EXTRA_FLAGS 0 /* orig 1 */ -+#define FRAME_SYNC_OFFSET 0 /* unused, channelized only */ -+#define FRAME_SYNC_SIZE 1024 -+#define PKT_NUM_PIPES 1 /* 1, 2 or 4 */ -+#define PKT_PIPE_FIFO_SIZEW 4 /* total 4 dwords per HSS */ ++ if (port->desc_tab) { ++ for (i = 0; i < RX_DESCS; i++) { ++ struct desc *desc = rx_desc_ptr(port, i); ++ buffer_t *buff = port->rx_buff_tab[i]; ++ if (buff) { ++ dma_unmap_single(&port->netdev->dev, ++ desc->data, RX_SIZE, ++ DMA_FROM_DEVICE); ++ free_buffer(buff); ++ } ++ } ++ for (i = 0; i < TX_DESCS; i++) { ++ struct desc *desc = tx_desc_ptr(port, i); ++ buffer_t *buff = port->tx_buff_tab[i]; ++ if (buff) { ++ dma_unmap_tx(port, desc); ++ free_buffer(buff); ++ } ++ } ++ dma_pool_free(dma_pool, port->desc_tab, port->desc_tab_phys); ++ port->desc_tab = NULL; ++ } + -+#define RX_DESCS 16 /* also length of all RX queues */ -+#define TX_DESCS 16 /* also length of all TX queues */ ++ if (!ports_open && dma_pool) { ++ dma_pool_destroy(dma_pool); ++ dma_pool = NULL; ++ } ++} + -+#define POOL_ALLOC_SIZE (sizeof(struct desc) * (RX_DESCS + TX_DESCS)) -+#define RX_SIZE (HDLC_MAX_MRU + 4) /* NPE needs more space */ -+#define MAX_CLOSE_WAIT 1000 /* microseconds */ ++static int hss_hdlc_open(struct net_device *dev) ++{ ++ struct port *port = dev_to_port(dev); ++ struct npe *npe = port->npe; ++ struct msg msg; ++ int i, err; + -+/* Queue IDs */ -+#define HSS0_CHL_RXTRIG_QUEUE 12 /* orig size = 32 dwords */ -+#define HSS0_PKT_RX_QUEUE 13 /* orig size = 32 dwords */ -+#define HSS0_PKT_TX0_QUEUE 14 /* orig size = 16 dwords */ -+#define HSS0_PKT_TX1_QUEUE 15 -+#define HSS0_PKT_TX2_QUEUE 16 -+#define HSS0_PKT_TX3_QUEUE 17 -+#define HSS0_PKT_RXFREE0_QUEUE 18 /* orig size = 16 dwords */ -+#define HSS0_PKT_RXFREE1_QUEUE 19 -+#define HSS0_PKT_RXFREE2_QUEUE 20 -+#define HSS0_PKT_RXFREE3_QUEUE 21 -+#define HSS0_PKT_TXDONE_QUEUE 22 /* orig size = 64 dwords */ ++ if (!npe_running(npe)) { ++ err = npe_load_firmware(npe, npe_name(npe), &dev->dev); ++ if (err) ++ return err; ++ } + -+#define HSS1_CHL_RXTRIG_QUEUE 10 -+#define HSS1_PKT_RX_QUEUE 0 -+#define HSS1_PKT_TX0_QUEUE 5 -+#define HSS1_PKT_TX1_QUEUE 6 -+#define HSS1_PKT_TX2_QUEUE 7 -+#define HSS1_PKT_TX3_QUEUE 8 -+#define HSS1_PKT_RXFREE0_QUEUE 1 -+#define HSS1_PKT_RXFREE1_QUEUE 2 -+#define HSS1_PKT_RXFREE2_QUEUE 3 -+#define HSS1_PKT_RXFREE3_QUEUE 4 -+#define HSS1_PKT_TXDONE_QUEUE 9 ++ if ((err = hdlc_open(dev)) != 0) ++ return err; + -+#define NPE_PKT_MODE_HDLC 0 -+#define NPE_PKT_MODE_RAW 1 -+#define NPE_PKT_MODE_56KMODE 2 -+#define NPE_PKT_MODE_56KENDIAN_MSB 4 ++ if (port->plat->open) ++ if ((err = port->plat->open(port->id, port->netdev, ++ hss_hdlc_set_carrier)) != 0) ++ goto err_hdlc_close; + -+/* PKT_PIPE_HDLC_CFG_WRITE flags */ -+#define PKT_HDLC_IDLE_ONES 0x1 /* default = flags */ -+#define PKT_HDLC_CRC_32 0x2 /* default = CRC-16 */ -+#define PKT_HDLC_MSB_ENDIAN 0x4 /* default = LE */ ++ /* HSS main configuration */ ++ memset(&msg, 0, sizeof(msg)); ++ msg.cmd = PORT_CONFIG_WRITE; ++ msg.hss_port = port->id; ++ msg.index = 0; /* offset in HSS config */ + ++ msg.data32 = PCR_FRM_PULSE_DISABLED | ++ PCR_SOF_NO_FBIT | ++ PCR_MSB_ENDIAN | ++ PCR_TX_DATA_ENABLE; + -+/* hss_config, PCRs */ -+/* Frame sync sampling, default = active low */ -+#define PCR_FRM_SYNC_ACTIVE_HIGH 0x40000000 -+#define PCR_FRM_SYNC_FALLINGEDGE 0x80000000 -+#define PCR_FRM_SYNC_RISINGEDGE 0xC0000000 ++ if (port->clock_type == CLOCK_INT) ++ msg.data32 |= PCR_SYNC_CLK_DIR_OUTPUT; + -+/* Frame sync pin: input (default) or output generated off a given clk edge */ -+#define PCR_FRM_SYNC_OUTPUT_FALLING 0x20000000 -+#define PCR_FRM_SYNC_OUTPUT_RISING 0x30000000 ++ if ((err = npe_send_message(npe, &msg, "HSS_SET_TX_PCR") != 0)) ++ goto err_plat_close; /* 0: TX PCR */ + -+/* Frame and data clock sampling on edge, default = falling */ -+#define PCR_FCLK_EDGE_RISING 0x08000000 -+#define PCR_DCLK_EDGE_RISING 0x04000000 ++ msg.index = 4; ++ msg.data32 ^= PCR_TX_DATA_ENABLE | PCR_DCLK_EDGE_RISING; ++ if ((err = npe_send_message(npe, &msg, "HSS_SET_RX_PCR") != 0)) ++ goto err_plat_close; /* 4: RX PCR */ + -+/* Clock direction, default = input */ -+#define PCR_SYNC_CLK_DIR_OUTPUT 0x02000000 -+ -+/* Generate/Receive frame pulses, default = enabled */ -+#define PCR_FRM_PULSE_DISABLED 0x01000000 ++ msg.index = 8; ++ msg.data32 = (port->loopback ? CCR_LOOPBACK : 0) | ++ (port->id ? CCR_SECOND_HSS : 0); ++ if ((err = npe_send_message(npe, &msg, "HSS_SET_CORE_CR") != 0)) ++ goto err_plat_close; /* 8: Core CR */ + -+ /* Data rate is full (default) or half the configured clk speed */ -+#define PCR_HALF_CLK_RATE 0x00200000 ++ msg.index = 12; ++ msg.data32 = CLK42X_SPEED_2048KHZ /* FIXME */; ++ if ((err = npe_send_message(npe, &msg, "HSS_SET_CLK_CR") != 0)) ++ goto err_plat_close; /* 12: CLK CR */ + -+/* Invert data between NPE and HSS FIFOs? (default = no) */ -+#define PCR_DATA_POLARITY_INVERT 0x00100000 ++ msg.data32 = (FRAME_SYNC_OFFSET << 16) | (FRAME_SYNC_SIZE - 1); ++ msg.index = 16; ++ if ((err = npe_send_message(npe, &msg, "HSS_SET_TX_FCR") != 0)) ++ goto err_plat_close; /* 16: TX FCR */ + -+/* TX/RX endianness, default = LSB */ -+#define PCR_MSB_ENDIAN 0x00080000 ++ msg.index = 20; ++ if ((err = npe_send_message(npe, &msg, "HSS_SET_RX_FCR") != 0)) ++ goto err_plat_close; /* 20: RX FCR */ + -+/* Normal (default) / open drain mode (TX only) */ -+#define PCR_TX_PINS_OPEN_DRAIN 0x00040000 ++ msg.data32 = 0; /* Fill LUT with HDLC timeslots */ ++ for (i = 0; i < 32 / LUT_BITS; i++) ++ msg.data32 |= TDMMAP_HDLC << (LUT_BITS * i); + -+/* No framing bit transmitted and expected on RX? (default = framing bit) */ -+#define PCR_SOF_NO_FBIT 0x00020000 ++ for (i = 0; i < 2 /* TX and RX */ * TIMESLOTS * LUT_BITS / 8; i += 4) { ++ msg.index = 24 + i; /* 24 - 55: TX LUT, 56 - 87: RX LUT */ ++ if ((err = npe_send_message(npe, &msg, "HSS_SET_LUT") != 0)) ++ goto err_plat_close; ++ } + -+/* Drive data pins? */ -+#define PCR_TX_DATA_ENABLE 0x00010000 ++ /* HDLC mode configuration */ ++ memset(&msg, 0, sizeof(msg)); ++ msg.cmd = PKT_NUM_PIPES_WRITE; ++ msg.hss_port = port->id; ++ msg.data8a = PKT_NUM_PIPES; ++ if ((err = npe_send_message(npe, &msg, "HSS_SET_PKT_PIPES") != 0)) ++ goto err_plat_close; + -+/* Voice 56k type: drive the data pins low (default), high, high Z */ -+#define PCR_TX_V56K_HIGH 0x00002000 -+#define PCR_TX_V56K_HIGH_IMP 0x00004000 ++ memset(&msg, 0, sizeof(msg)); ++ msg.cmd = PKT_PIPE_FIFO_SIZEW_WRITE; ++ msg.hss_port = port->id; ++ msg.data8a = PKT_PIPE_FIFO_SIZEW; ++ if ((err = npe_send_message(npe, &msg, "HSS_SET_PKT_FIFO") != 0)) ++ goto err_plat_close; + -+/* Unassigned type: drive the data pins low (default), high, high Z */ -+#define PCR_TX_UNASS_HIGH 0x00000800 -+#define PCR_TX_UNASS_HIGH_IMP 0x00001000 ++ memset(&msg, 0, sizeof(msg)); ++ msg.cmd = PKT_PIPE_IDLE_PATTERN_WRITE; ++ msg.hss_port = port->id; ++ msg.data32 = 0x7F7F7F7F; ++ if ((err = npe_send_message(npe, &msg, "HSS_SET_PKT_IDLE") != 0)) ++ goto err_plat_close; + -+/* T1 @ 1.544MHz only: Fbit dictated in FIFO (default) or high Z */ -+#define PCR_TX_FB_HIGH_IMP 0x00000400 ++ memset(&msg, 0, sizeof(msg)); ++ msg.cmd = PORT_CONFIG_LOAD; ++ msg.hss_port = port->id; ++ if ((err = npe_send_message(npe, &msg, "HSS_LOAD_CONFIG") != 0)) ++ goto err_plat_close; ++ if ((err = npe_recv_message(npe, &msg, "HSS_LOAD_CONFIG") != 0)) ++ goto err_plat_close; + -+/* 56k data endiannes - which bit unused: high (default) or low */ -+#define PCR_TX_56KE_BIT_0_UNUSED 0x00000200 ++ /* HSS_LOAD_CONFIG for port #1 returns port_id = #4 */ ++ if (msg.cmd != PORT_CONFIG_LOAD || msg.data32) { ++ printk(KERN_DEBUG "%s: unexpected message received in" ++ " response to HSS_LOAD_CONFIG\n", npe_name(npe)); ++ err = EIO; ++ goto err_plat_close; ++ } + -+/* 56k data transmission type: 32/8 bit data (default) or 56K data */ -+#define PCR_TX_56KS_56K_DATA 0x00000100 ++ memset(&msg, 0, sizeof(msg)); ++ msg.cmd = PKT_PIPE_HDLC_CFG_WRITE; ++ msg.hss_port = port->id; ++ msg.data8a = port->hdlc_cfg; /* rx_cfg */ ++ msg.data8b = port->hdlc_cfg | (PKT_EXTRA_FLAGS << 3); /* tx_cfg */ ++ if ((err = npe_send_message(npe, &msg, "HSS_SET_HDLC_CFG") != 0)) ++ goto err_plat_close; + -+/* hss_config, cCR */ -+/* Number of packetized clients, default = 1 */ -+#define CCR_NPE_HFIFO_2_HDLC 0x04000000 -+#define CCR_NPE_HFIFO_3_OR_4HDLC 0x08000000 ++ memset(&msg, 0, sizeof(msg)); ++ msg.cmd = PKT_PIPE_MODE_WRITE; ++ msg.hss_port = port->id; ++ msg.data8a = NPE_PKT_MODE_HDLC; ++ /* msg.data8b = inv_mask */ ++ /* msg.data8c = or_mask */ ++ if ((err = npe_send_message(npe, &msg, "HSS_SET_PKT_MODE") != 0)) ++ goto err_plat_close; + -+/* default = no loopback */ -+#define CCR_LOOPBACK 0x02000000 ++ memset(&msg, 0, sizeof(msg)); ++ msg.cmd = PKT_PIPE_RX_SIZE_WRITE; ++ msg.hss_port = port->id; ++ msg.data16a = HDLC_MAX_MRU; ++ if ((err = npe_send_message(npe, &msg, "HSS_SET_PKT_RX_SIZE") != 0)) ++ goto err_plat_close; + -+/* HSS number, default = 0 (first) */ -+#define CCR_SECOND_HSS 0x01000000 ++ if ((err = request_hdlc_queues(port)) != 0) ++ goto err_plat_close; + ++ if ((err = init_hdlc_queues(port)) != 0) ++ goto err_destroy_queues; + -+/* hss_config, clkCR: main:10, num:10, denom:12 */ -+#define CLK42X_SPEED_EXP ((0x3FF << 22) | ( 2 << 12) | 15) /*65 KHz*/ ++ memset(&msg, 0, sizeof(msg)); ++ msg.cmd = PKT_PIPE_FLOW_ENABLE; ++ msg.hss_port = port->id; ++ if ((err = npe_send_message(npe, &msg, "HSS_ENABLE_PKT_PIPE") != 0)) ++ goto err_destroy_queues; + -+#define CLK42X_SPEED_512KHZ (( 130 << 22) | ( 2 << 12) | 15) -+#define CLK42X_SPEED_1536KHZ (( 43 << 22) | ( 18 << 12) | 47) -+#define CLK42X_SPEED_1544KHZ (( 43 << 22) | ( 33 << 12) | 192) -+#define CLK42X_SPEED_2048KHZ (( 32 << 22) | ( 34 << 12) | 63) -+#define CLK42X_SPEED_4096KHZ (( 16 << 22) | ( 34 << 12) | 127) -+#define CLK42X_SPEED_8192KHZ (( 8 << 22) | ( 34 << 12) | 255) ++ /* Populate queues with buffers, no failure after this point */ ++ for (i = 0; i < TX_DESCS; i++) ++ queue_put_desc(port->plat->txreadyq, ++ tx_desc_phys(port, i), tx_desc_ptr(port, i)); + -+#define CLK46X_SPEED_512KHZ (( 130 << 22) | ( 24 << 12) | 127) -+#define CLK46X_SPEED_1536KHZ (( 43 << 22) | (152 << 12) | 383) -+#define CLK46X_SPEED_1544KHZ (( 43 << 22) | ( 66 << 12) | 385) -+#define CLK46X_SPEED_2048KHZ (( 32 << 22) | (280 << 12) | 511) -+#define CLK46X_SPEED_4096KHZ (( 16 << 22) | (280 << 12) | 1023) -+#define CLK46X_SPEED_8192KHZ (( 8 << 22) | (280 << 12) | 2047) ++ for (i = 0; i < RX_DESCS; i++) ++ queue_put_desc(queue_ids[port->id].rxfree, ++ rx_desc_phys(port, i), rx_desc_ptr(port, i)); + ++ netif_start_queue(dev); + -+/* hss_config, LUT entries */ -+#define TDMMAP_UNASSIGNED 0 -+#define TDMMAP_HDLC 1 /* HDLC - packetized */ -+#define TDMMAP_VOICE56K 2 /* Voice56K - 7-bit channelized */ -+#define TDMMAP_VOICE64K 3 /* Voice64K - 8-bit channelized */ ++ qmgr_set_irq(queue_ids[port->id].rx, QUEUE_IRQ_SRC_NOT_EMPTY, ++ hss_hdlc_rx_irq, dev); + -+#define TIMESLOTS 128 -+#define LUT_BITS 2 ++ qmgr_set_irq(queue_ids[port->id].txdone, QUEUE_IRQ_SRC_NOT_EMPTY, ++ hss_hdlc_txdone_irq, dev); ++ qmgr_enable_irq(queue_ids[port->id].txdone); + -+/* offsets into HSS config */ -+#define HSS_CONFIG_TX_PCR 0x00 -+#define HSS_CONFIG_RX_PCR 0x04 -+#define HSS_CONFIG_CORE_CR 0x08 -+#define HSS_CONFIG_CLOCK_CR 0x0C -+#define HSS_CONFIG_TX_FCR 0x10 -+#define HSS_CONFIG_RX_FCR 0x14 -+#define HSS_CONFIG_TX_LUT 0x18 -+#define HSS_CONFIG_RX_LUT 0x38 ++ ports_open++; ++ netif_rx_schedule(dev); /* we may already have RX data, enables IRQ */ ++ return 0; + ++err_destroy_queues: ++ destroy_hdlc_queues(port); ++ release_hdlc_queues(port); ++err_plat_close: ++ if (port->plat->close) ++ port->plat->close(port->id, port->netdev); ++err_hdlc_close: ++ hdlc_close(dev); ++ return err; ++} + -+/* NPE command codes */ -+/* writes the ConfigWord value to the location specified by offset */ -+#define PORT_CONFIG_WRITE 0x40 ++static int hss_hdlc_close(struct net_device *dev) ++{ ++ struct port *port = dev_to_port(dev); ++ struct npe *npe = port->npe; ++ struct msg msg; ++ int buffs = RX_DESCS; /* allocated RX buffers */ ++ int i; + -+/* triggers the NPE to load the contents of the configuration table */ -+#define PORT_CONFIG_LOAD 0x41 ++ ports_open--; ++ qmgr_disable_irq(queue_ids[port->id].rx); ++ netif_stop_queue(dev); + -+/* triggers the NPE to return an HssErrorReadResponse message */ -+#define PORT_ERROR_READ 0x42 ++ memset(&msg, 0, sizeof(msg)); ++ msg.cmd = PKT_PIPE_FLOW_DISABLE; ++ msg.hss_port = port->id; ++ if (npe_send_message(npe, &msg, "HSS_DISABLE_PKT_PIPE")) { ++ printk(KERN_CRIT "HSS-%i: unable to stop HDLC flow\n", ++ port->id); ++ /* The upper level would ignore the error anyway */ ++ } + -+/* reset NPE internal status and enable the HssChannelized operation */ -+#define CHAN_FLOW_ENABLE 0x43 -+#define CHAN_FLOW_DISABLE 0x44 -+#define CHAN_IDLE_PATTERN_WRITE 0x45 -+#define CHAN_NUM_CHANS_WRITE 0x46 -+#define CHAN_RX_BUF_ADDR_WRITE 0x47 -+#define CHAN_RX_BUF_CFG_WRITE 0x48 -+#define CHAN_TX_BLK_CFG_WRITE 0x49 -+#define CHAN_TX_BUF_ADDR_WRITE 0x4A -+#define CHAN_TX_BUF_SIZE_WRITE 0x4B -+#define CHAN_TSLOTSWITCH_ENABLE 0x4C -+#define CHAN_TSLOTSWITCH_DISABLE 0x4D ++ while (queue_get_desc(queue_ids[port->id].rxfree, port, 0) >= 0) ++ buffs--; ++ while (queue_get_desc(queue_ids[port->id].rx, port, 0) >= 0) ++ buffs--; + -+/* downloads the gainWord value for a timeslot switching channel associated -+ with bypassNum */ -+#define CHAN_TSLOTSWITCH_GCT_DOWNLOAD 0x4E ++ if (buffs) ++ printk(KERN_CRIT "%s: unable to drain RX queue, %i buffer(s)" ++ " left in NPE\n", dev->name, buffs); + -+/* triggers the NPE to reset internal status and enable the HssPacketized -+ operation for the flow specified by pPipe */ -+#define PKT_PIPE_FLOW_ENABLE 0x50 -+#define PKT_PIPE_FLOW_DISABLE 0x51 -+#define PKT_NUM_PIPES_WRITE 0x52 -+#define PKT_PIPE_FIFO_SIZEW_WRITE 0x53 -+#define PKT_PIPE_HDLC_CFG_WRITE 0x54 -+#define PKT_PIPE_IDLE_PATTERN_WRITE 0x55 -+#define PKT_PIPE_RX_SIZE_WRITE 0x56 -+#define PKT_PIPE_MODE_WRITE 0x57 ++ buffs = TX_DESCS; ++ while (queue_get_desc(queue_ids[port->id].tx, port, 1) >= 0) ++ buffs--; /* cancel TX */ + -+/* HDLC packet status values - desc->status */ -+#define ERR_SHUTDOWN 1 /* stop or shutdown occurrance */ -+#define ERR_HDLC_ALIGN 2 /* HDLC alignment error */ -+#define ERR_HDLC_FCS 3 /* HDLC Frame Check Sum error */ -+#define ERR_RXFREE_Q_EMPTY 4 /* RX-free queue became empty while receiving -+ this packet (if buf_len < pkt_len) */ -+#define ERR_HDLC_TOO_LONG 5 /* HDLC frame size too long */ -+#define ERR_HDLC_ABORT 6 /* abort sequence received */ -+#define ERR_DISCONNECTING 7 /* disconnect is in progress */ ++ i = 0; ++ do { ++ while (queue_get_desc(port->plat->txreadyq, port, 1) >= 0) ++ buffs--; ++ if (!buffs) ++ break; ++ } while (++i < MAX_CLOSE_WAIT); + -+ -+#ifdef __ARMEB__ -+typedef struct sk_buff buffer_t; -+#define free_buffer dev_kfree_skb -+#define free_buffer_irq dev_kfree_skb_irq -+#else -+typedef void buffer_t; -+#define free_buffer kfree -+#define free_buffer_irq kfree ++ if (buffs) ++ printk(KERN_CRIT "%s: unable to drain TX queue, %i buffer(s) " ++ "left in NPE\n", dev->name, buffs); ++#if DEBUG_CLOSE ++ if (!buffs) ++ printk(KERN_DEBUG "Draining TX queues took %i cycles\n", i); +#endif ++ qmgr_disable_irq(queue_ids[port->id].txdone); ++ destroy_hdlc_queues(port); ++ release_hdlc_queues(port); + -+struct port { -+ struct npe *npe; -+ struct net_device *netdev; -+ struct hss_plat_info *plat; -+ buffer_t *rx_buff_tab[RX_DESCS], *tx_buff_tab[TX_DESCS]; -+ struct desc *desc_tab; /* coherent */ -+ u32 desc_tab_phys; -+ int id; -+ unsigned int clock_type, clock_rate, loopback; -+ u8 hdlc_cfg; -+}; ++ if (port->plat->close) ++ port->plat->close(port->id, port->netdev); ++ hdlc_close(dev); ++ return 0; ++} + -+/* NPE message structure */ -+struct msg { -+#ifdef __ARMEB__ -+ u8 cmd, unused, hss_port, index; -+ union { -+ struct { u8 data8a, data8b, data8c, data8d; }; -+ struct { u16 data16a, data16b; }; -+ struct { u32 data32; }; -+ }; -+#else -+ u8 index, hss_port, unused, cmd; -+ union { -+ struct { u8 data8d, data8c, data8b, data8a; }; -+ struct { u16 data16b, data16a; }; -+ struct { u32 data32; }; -+ }; -+#endif -+}; + -+/* HDLC packet descriptor */ -+struct desc { -+ u32 next; /* pointer to next buffer, unused */ ++static int hss_hdlc_attach(struct net_device *dev, unsigned short encoding, ++ unsigned short parity) ++{ ++ struct port *port = dev_to_port(dev); + -+#ifdef __ARMEB__ -+ u16 buf_len; /* buffer length */ -+ u16 pkt_len; /* packet length */ -+ u32 data; /* pointer to data buffer in RAM */ -+ u8 status; -+ u8 error_count; -+ u16 __reserved; -+#else -+ u16 pkt_len; /* packet length */ -+ u16 buf_len; /* buffer length */ -+ u32 data; /* pointer to data buffer in RAM */ -+ u16 __reserved; -+ u8 error_count; -+ u8 status; -+#endif -+ u32 __reserved1[4]; ++ if (encoding != ENCODING_NRZ) ++ return -EINVAL; ++ ++ switch(parity) { ++ case PARITY_CRC16_PR1_CCITT: ++ port->hdlc_cfg = 0; ++ return 0; ++ ++ case PARITY_CRC32_PR1_CCITT: ++ port->hdlc_cfg = PKT_HDLC_CRC_32; ++ return 0; ++ ++ default: ++ return -EINVAL; ++ } ++} ++ ++ ++static int hss_hdlc_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) ++{ ++ const size_t size = sizeof(sync_serial_settings); ++ sync_serial_settings new_line; ++ int clk; ++ sync_serial_settings __user *line = ifr->ifr_settings.ifs_ifsu.sync; ++ struct port *port = dev_to_port(dev); ++ ++ if (cmd != SIOCWANDEV) ++ return hdlc_ioctl(dev, ifr, cmd); ++ ++ switch(ifr->ifr_settings.type) { ++ case IF_GET_IFACE: ++ ifr->ifr_settings.type = IF_IFACE_V35; ++ if (ifr->ifr_settings.size < size) { ++ ifr->ifr_settings.size = size; /* data size wanted */ ++ return -ENOBUFS; ++ } ++ memset(&new_line, 0, sizeof(new_line)); ++ new_line.clock_type = port->clock_type; ++ new_line.clock_rate = port->clock_rate; ++ new_line.loopback = port->loopback; ++ if (copy_to_user(line, &new_line, size)) ++ return -EFAULT; ++ return 0; ++ ++ case IF_IFACE_SYNC_SERIAL: ++ case IF_IFACE_V35: ++ if(!capable(CAP_NET_ADMIN)) ++ return -EPERM; ++ if (dev->flags & IFF_UP) ++ return -EBUSY; /* Cannot change parameters when open */ ++ ++ if (copy_from_user(&new_line, line, size)) ++ return -EFAULT; ++ ++ clk = new_line.clock_type; ++ if (port->plat->set_clock) ++ clk = port->plat->set_clock(port->id, clk); ++ ++ if (clk != CLOCK_EXT && clk != CLOCK_INT) ++ return -EINVAL; /* No such clock setting */ ++ ++ if (new_line.loopback != 0 && new_line.loopback != 1) ++ return -EINVAL; ++ ++ port->clock_type = clk; /* Update settings */ ++ port->clock_rate = new_line.clock_rate; ++ port->loopback = new_line.loopback; ++ return 0; ++ ++ default: ++ return hdlc_ioctl(dev, ifr, cmd); ++ } ++} ++ ++ ++static int __devinit hss_init_one(struct platform_device *pdev) ++{ ++ struct port *port; ++ struct net_device *dev; ++ hdlc_device *hdlc; ++ int err; ++ ++ if ((port = kzalloc(sizeof(*port), GFP_KERNEL)) == NULL) ++ return -ENOMEM; ++ platform_set_drvdata(pdev, port); ++ port->id = pdev->id; ++ ++ if ((port->npe = npe_request(0)) == NULL) { ++ err = -ENOSYS; ++ goto err_free; ++ } ++ ++ port->plat = pdev->dev.platform_data; ++ if ((port->netdev = dev = alloc_hdlcdev(port)) == NULL) { ++ err = -ENOMEM; ++ goto err_plat; ++ } ++ ++ SET_MODULE_OWNER(net); ++ SET_NETDEV_DEV(dev, &pdev->dev); ++ hdlc = dev_to_hdlc(dev); ++ hdlc->attach = hss_hdlc_attach; ++ hdlc->xmit = hss_hdlc_xmit; ++ dev->open = hss_hdlc_open; ++ dev->poll = hss_hdlc_poll; ++ dev->stop = hss_hdlc_close; ++ dev->do_ioctl = hss_hdlc_ioctl; ++ dev->weight = 16; ++ dev->tx_queue_len = 100; ++ port->clock_type = CLOCK_EXT; ++ port->clock_rate = 2048000; ++ ++ if (register_hdlc_device(dev)) { ++ printk(KERN_ERR "HSS-%i: unable to register HDLC device\n", ++ port->id); ++ err = -ENOBUFS; ++ goto err_free_netdev; ++ } ++ printk(KERN_INFO "%s: HSS-%i\n", dev->name, port->id); ++ return 0; ++ ++err_free_netdev: ++ free_netdev(dev); ++err_plat: ++ npe_release(port->npe); ++ platform_set_drvdata(pdev, NULL); ++err_free: ++ kfree(port); ++ return err; ++} ++ ++static int __devexit hss_remove_one(struct platform_device *pdev) ++{ ++ struct port *port = platform_get_drvdata(pdev); ++ ++ unregister_hdlc_device(port->netdev); ++ free_netdev(port->netdev); ++ npe_release(port->npe); ++ platform_set_drvdata(pdev, NULL); ++ kfree(port); ++ return 0; ++} ++ ++static struct platform_driver drv = { ++ .driver.name = DRV_NAME, ++ .probe = hss_init_one, ++ .remove = hss_remove_one, +}; + ++static int __init hss_init_module(void) ++{ ++ if ((ixp4xx_read_feature_bits() & ++ (IXP4XX_FEATURE_HDLC | IXP4XX_FEATURE_HSS)) != ++ (IXP4XX_FEATURE_HDLC | IXP4XX_FEATURE_HSS)) ++ return -ENOSYS; ++ return platform_driver_register(&drv); ++} ++ ++static void __exit hss_cleanup_module(void) ++{ ++ platform_driver_unregister(&drv); ++} ++ ++MODULE_AUTHOR("Krzysztof Halasa"); ++MODULE_DESCRIPTION("Intel IXP4xx HSS driver"); ++MODULE_LICENSE("GPL v2"); ++module_init(hss_init_module); ++module_exit(hss_cleanup_module); +Index: linux-2.6.24.7/include/asm-arm/arch-ixp4xx/ixp4xx-regs.h +=================================================================== +--- linux-2.6.24.7.orig/include/asm-arm/arch-ixp4xx/ixp4xx-regs.h ++++ linux-2.6.24.7/include/asm-arm/arch-ixp4xx/ixp4xx-regs.h +@@ -15,10 +15,6 @@ + * + */ + +-#ifndef __ASM_ARCH_HARDWARE_H__ +-#error "Do not include this directly, instead #include " +-#endif +- + #ifndef _ASM_ARM_IXP4XX_H_ + #define _ASM_ARM_IXP4XX_H_ + +@@ -607,4 +603,36 @@ + + #define DCMD_LENGTH 0x01fff /* length mask (max = 8K - 1) */ + ++/* "fuse" bits of IXP_EXP_CFG2 */ ++#define IXP4XX_FEATURE_RCOMP (1 << 0) ++#define IXP4XX_FEATURE_USB_DEVICE (1 << 1) ++#define IXP4XX_FEATURE_HASH (1 << 2) ++#define IXP4XX_FEATURE_AES (1 << 3) ++#define IXP4XX_FEATURE_DES (1 << 4) ++#define IXP4XX_FEATURE_HDLC (1 << 5) ++#define IXP4XX_FEATURE_AAL (1 << 6) ++#define IXP4XX_FEATURE_HSS (1 << 7) ++#define IXP4XX_FEATURE_UTOPIA (1 << 8) ++#define IXP4XX_FEATURE_NPEB_ETH0 (1 << 9) ++#define IXP4XX_FEATURE_NPEC_ETH (1 << 10) ++#define IXP4XX_FEATURE_RESET_NPEA (1 << 11) ++#define IXP4XX_FEATURE_RESET_NPEB (1 << 12) ++#define IXP4XX_FEATURE_RESET_NPEC (1 << 13) ++#define IXP4XX_FEATURE_PCI (1 << 14) ++#define IXP4XX_FEATURE_ECC_TIMESYNC (1 << 15) ++#define IXP4XX_FEATURE_UTOPIA_PHY_LIMIT (3 << 16) ++#define IXP4XX_FEATURE_USB_HOST (1 << 18) ++#define IXP4XX_FEATURE_NPEA_ETH (1 << 19) ++#define IXP4XX_FEATURE_NPEB_ETH_1_TO_3 (1 << 20) ++#define IXP4XX_FEATURE_RSA (1 << 21) ++#define IXP4XX_FEATURE_XSCALE_MAX_FREQ (3 << 22) ++#define IXP4XX_FEATURE_RESERVED (0xFF << 24) ++ ++#define IXP4XX_FEATURE_IXP46X_ONLY (IXP4XX_FEATURE_ECC_TIMESYNC | \ ++ IXP4XX_FEATURE_USB_HOST | \ ++ IXP4XX_FEATURE_NPEA_ETH | \ ++ IXP4XX_FEATURE_NPEB_ETH_1_TO_3 | \ ++ IXP4XX_FEATURE_RSA | \ ++ IXP4XX_FEATURE_XSCALE_MAX_FREQ) ++ + #endif +Index: linux-2.6.24.7/include/asm-arm/arch-ixp4xx/cpu.h +=================================================================== +--- linux-2.6.24.7.orig/include/asm-arm/arch-ixp4xx/cpu.h ++++ linux-2.6.24.7/include/asm-arm/arch-ixp4xx/cpu.h +@@ -28,4 +28,19 @@ extern unsigned int processor_id; + #define cpu_is_ixp46x() ((processor_id & IXP4XX_PROCESSOR_ID_MASK) == \ + IXP465_PROCESSOR_ID_VALUE) + ++static inline u32 ixp4xx_read_feature_bits(void) ++{ ++ unsigned int val = ~*IXP4XX_EXP_CFG2; ++ val &= ~IXP4XX_FEATURE_RESERVED; ++ if (!cpu_is_ixp46x()) ++ val &= ~IXP4XX_FEATURE_IXP46X_ONLY; ++ ++ return val; ++} ++ ++static inline void ixp4xx_write_feature_bits(u32 value) ++{ ++ *IXP4XX_EXP_CFG2 = ~value; ++} ++ + #endif /* _ASM_ARCH_CPU_H */ +Index: linux-2.6.24.7/include/asm-arm/arch-ixp4xx/hardware.h +=================================================================== +--- linux-2.6.24.7.orig/include/asm-arm/arch-ixp4xx/hardware.h ++++ linux-2.6.24.7/include/asm-arm/arch-ixp4xx/hardware.h +@@ -27,13 +27,13 @@ + + #define pcibios_assign_all_busses() 1 + ++/* Register locations and bits */ ++#include "ixp4xx-regs.h" ++ + #ifndef __ASSEMBLER__ + #include + #endif + +-/* Register locations and bits */ +-#include "ixp4xx-regs.h" +- + /* Platform helper functions and definitions */ + #include "platform.h" + +Index: linux-2.6.24.7/include/asm-arm/arch-ixp4xx/uncompress.h +=================================================================== +--- linux-2.6.24.7.orig/include/asm-arm/arch-ixp4xx/uncompress.h ++++ linux-2.6.24.7/include/asm-arm/arch-ixp4xx/uncompress.h +@@ -13,7 +13,7 @@ + #ifndef _ARCH_UNCOMPRESS_H_ + #define _ARCH_UNCOMPRESS_H_ + +-#include ++#include "ixp4xx-regs.h" + #include + #include + +Index: linux-2.6.24.7/arch/arm/kernel/setup.c +=================================================================== +--- linux-2.6.24.7.orig/arch/arm/kernel/setup.c ++++ linux-2.6.24.7/arch/arm/kernel/setup.c +@@ -62,6 +62,7 @@ extern int root_mountflags; + extern void _stext, _text, _etext, __data_start, _edata, _end; + + unsigned int processor_id; ++EXPORT_SYMBOL(processor_id); + unsigned int __machine_arch_type; + EXPORT_SYMBOL(__machine_arch_type); + +Index: linux-2.6.24.7/arch/arm/mach-ixp4xx/Kconfig +=================================================================== +--- linux-2.6.24.7.orig/arch/arm/mach-ixp4xx/Kconfig ++++ linux-2.6.24.7/arch/arm/mach-ixp4xx/Kconfig +@@ -262,6 +262,20 @@ config IXP4XX_INDIRECT_PCI + need to use the indirect method instead. If you don't know + what you need, leave this option unselected. + ++config IXP4XX_QMGR ++ tristate "IXP4xx Queue Manager support" ++ help ++ This driver supports IXP4xx built-in hardware queue manager ++ and is automatically selected by Ethernet and HSS drivers. ++ ++config IXP4XX_NPE ++ tristate "IXP4xx Network Processor Engine support" ++ select HOTPLUG ++ select FW_LOADER ++ help ++ This driver supports IXP4xx built-in network coprocessors ++ and is automatically selected by Ethernet and HSS drivers. ++ + endmenu + + endif +Index: linux-2.6.24.7/arch/arm/mach-ixp4xx/Makefile +=================================================================== +--- linux-2.6.24.7.orig/arch/arm/mach-ixp4xx/Makefile ++++ linux-2.6.24.7/arch/arm/mach-ixp4xx/Makefile +@@ -48,3 +48,5 @@ obj-$(CONFIG_MACH_AP1000) += ap1000-setu + obj-$(CONFIG_MACH_TW5334) += tw5334-setup.o + + obj-$(CONFIG_PCI) += $(obj-pci-$(CONFIG_PCI)) common-pci.o ++obj-$(CONFIG_IXP4XX_QMGR) += ixp4xx_qmgr.o ++obj-$(CONFIG_IXP4XX_NPE) += ixp4xx_npe.o +Index: linux-2.6.24.7/include/asm-arm/arch-ixp4xx/qmgr.h +=================================================================== +--- /dev/null ++++ linux-2.6.24.7/include/asm-arm/arch-ixp4xx/qmgr.h +@@ -0,0 +1,126 @@ ++/* ++ * Copyright (C) 2007 Krzysztof Halasa ++ * ++ * This program is free software; you can redistribute it and/or modify it ++ * under the terms of version 2 of the GNU General Public License ++ * as published by the Free Software Foundation. ++ */ ++ ++#ifndef IXP4XX_QMGR_H ++#define IXP4XX_QMGR_H + -+#define rx_desc_phys(port, n) ((port)->desc_tab_phys + \ -+ (n) * sizeof(struct desc)) -+#define rx_desc_ptr(port, n) (&(port)->desc_tab[n]) ++#include ++#include + -+#define tx_desc_phys(port, n) ((port)->desc_tab_phys + \ -+ ((n) + RX_DESCS) * sizeof(struct desc)) -+#define tx_desc_ptr(port, n) (&(port)->desc_tab[(n) + RX_DESCS]) ++#define HALF_QUEUES 32 ++#define QUEUES 64 /* only 32 lower queues currently supported */ ++#define MAX_QUEUE_LENGTH 4 /* in dwords */ + -+/***************************************************************************** -+ * global variables -+ ****************************************************************************/ ++#define QUEUE_STAT1_EMPTY 1 /* queue status bits */ ++#define QUEUE_STAT1_NEARLY_EMPTY 2 ++#define QUEUE_STAT1_NEARLY_FULL 4 ++#define QUEUE_STAT1_FULL 8 ++#define QUEUE_STAT2_UNDERFLOW 1 ++#define QUEUE_STAT2_OVERFLOW 2 + -+static int ports_open; -+static struct dma_pool *dma_pool; ++#define QUEUE_WATERMARK_0_ENTRIES 0 ++#define QUEUE_WATERMARK_1_ENTRY 1 ++#define QUEUE_WATERMARK_2_ENTRIES 2 ++#define QUEUE_WATERMARK_4_ENTRIES 3 ++#define QUEUE_WATERMARK_8_ENTRIES 4 ++#define QUEUE_WATERMARK_16_ENTRIES 5 ++#define QUEUE_WATERMARK_32_ENTRIES 6 ++#define QUEUE_WATERMARK_64_ENTRIES 7 + -+static const struct { -+ int tx, txdone, rx, rxfree; -+}queue_ids[2] = {{ HSS0_PKT_TX0_QUEUE, HSS0_PKT_TXDONE_QUEUE, -+ HSS0_PKT_RX_QUEUE, HSS0_PKT_RXFREE0_QUEUE }, -+ { HSS1_PKT_TX0_QUEUE, HSS1_PKT_TXDONE_QUEUE, -+ HSS1_PKT_RX_QUEUE, HSS1_PKT_RXFREE0_QUEUE }, ++/* queue interrupt request conditions */ ++#define QUEUE_IRQ_SRC_EMPTY 0 ++#define QUEUE_IRQ_SRC_NEARLY_EMPTY 1 ++#define QUEUE_IRQ_SRC_NEARLY_FULL 2 ++#define QUEUE_IRQ_SRC_FULL 3 ++#define QUEUE_IRQ_SRC_NOT_EMPTY 4 ++#define QUEUE_IRQ_SRC_NOT_NEARLY_EMPTY 5 ++#define QUEUE_IRQ_SRC_NOT_NEARLY_FULL 6 ++#define QUEUE_IRQ_SRC_NOT_FULL 7 ++ ++struct qmgr_regs { ++ u32 acc[QUEUES][MAX_QUEUE_LENGTH]; /* 0x000 - 0x3FF */ ++ u32 stat1[4]; /* 0x400 - 0x40F */ ++ u32 stat2[2]; /* 0x410 - 0x417 */ ++ u32 statne_h; /* 0x418 - queue nearly empty */ ++ u32 statf_h; /* 0x41C - queue full */ ++ u32 irqsrc[4]; /* 0x420 - 0x42F IRC source */ ++ u32 irqen[2]; /* 0x430 - 0x437 IRQ enabled */ ++ u32 irqstat[2]; /* 0x438 - 0x43F - IRQ access only */ ++ u32 reserved[1776]; ++ u32 sram[2048]; /* 0x2000 - 0x3FFF - config and buffer */ +}; + -+/***************************************************************************** -+ * utility functions -+ ****************************************************************************/ ++void qmgr_set_irq(unsigned int queue, int src, ++ void (*handler)(void *pdev), void *pdev); ++void qmgr_enable_irq(unsigned int queue); ++void qmgr_disable_irq(unsigned int queue); + -+static inline struct port* dev_to_port(struct net_device *dev) ++/* request_ and release_queue() must be called from non-IRQ context */ ++int qmgr_request_queue(unsigned int queue, unsigned int len /* dwords */, ++ unsigned int nearly_empty_watermark, ++ unsigned int nearly_full_watermark); ++void qmgr_release_queue(unsigned int queue); ++ ++ ++static inline void qmgr_put_entry(unsigned int queue, u32 val) +{ -+ return dev_to_hdlc(dev)->priv; ++ extern struct qmgr_regs __iomem *qmgr_regs; ++ __raw_writel(val, &qmgr_regs->acc[queue][0]); +} + -+#ifndef __ARMEB__ -+static inline void memcpy_swab32(u32 *dest, u32 *src, int cnt) ++static inline u32 qmgr_get_entry(unsigned int queue) +{ -+ int i; -+ for (i = 0; i < cnt; i++) -+ dest[i] = swab32(src[i]); ++ extern struct qmgr_regs __iomem *qmgr_regs; ++ return __raw_readl(&qmgr_regs->acc[queue][0]); +} -+#endif + -+static inline void debug_pkt(struct net_device *dev, const char *func, -+ u8 *data, int len) ++static inline int qmgr_get_stat1(unsigned int queue) +{ -+#if DEBUG_PKT_BYTES -+ int i; -+ -+ printk(KERN_DEBUG "%s: %s(%i) ", dev->name, func, len); -+ for (i = 0; i < len; i++) { -+ if (i >= DEBUG_PKT_BYTES) -+ break; -+ printk("%s%02X", !(i % 4) ? " " : "", data[i]); -+ } -+ printk("\n"); -+#endif ++ extern struct qmgr_regs __iomem *qmgr_regs; ++ return (__raw_readl(&qmgr_regs->stat1[queue >> 3]) ++ >> ((queue & 7) << 2)) & 0xF; +} + ++static inline int qmgr_get_stat2(unsigned int queue) ++{ ++ extern struct qmgr_regs __iomem *qmgr_regs; ++ return (__raw_readl(&qmgr_regs->stat2[queue >> 4]) ++ >> ((queue & 0xF) << 1)) & 0x3; ++} + -+static inline void debug_desc(u32 phys, struct desc *desc) ++static inline int qmgr_stat_empty(unsigned int queue) +{ -+#if DEBUG_DESC -+ printk(KERN_DEBUG "%X: %X %3X %3X %08X %X %X\n", -+ phys, desc->next, desc->buf_len, desc->pkt_len, -+ desc->data, desc->status, desc->error_count); -+#endif ++ return !!(qmgr_get_stat1(queue) & QUEUE_STAT1_EMPTY); +} + -+static inline void debug_queue(unsigned int queue, int is_get, u32 phys) ++static inline int qmgr_stat_nearly_empty(unsigned int queue) +{ -+#if DEBUG_QUEUES -+ static struct { -+ int queue; -+ char *name; -+ } names[] = { -+ { HSS0_PKT_TX0_QUEUE, "TX#0 " }, -+ { HSS0_PKT_TXDONE_QUEUE, "TX-done#0 " }, -+ { HSS0_PKT_RX_QUEUE, "RX#0 " }, -+ { HSS0_PKT_RXFREE0_QUEUE, "RX-free#0 " }, -+ { HSS1_PKT_TX0_QUEUE, "TX#1 " }, -+ { HSS1_PKT_TXDONE_QUEUE, "TX-done#1 " }, -+ { HSS1_PKT_RX_QUEUE, "RX#1 " }, -+ { HSS1_PKT_RXFREE0_QUEUE, "RX-free#1 " }, -+ }; -+ int i; ++ return !!(qmgr_get_stat1(queue) & QUEUE_STAT1_NEARLY_EMPTY); ++} + -+ for (i = 0; i < ARRAY_SIZE(names); i++) -+ if (names[i].queue == queue) -+ break; ++static inline int qmgr_stat_nearly_full(unsigned int queue) ++{ ++ return !!(qmgr_get_stat1(queue) & QUEUE_STAT1_NEARLY_FULL); ++} + -+ printk(KERN_DEBUG "Queue %i %s%s %X\n", queue, -+ i < ARRAY_SIZE(names) ? names[i].name : "", -+ is_get ? "->" : "<-", phys); -+#endif ++static inline int qmgr_stat_full(unsigned int queue) ++{ ++ return !!(qmgr_get_stat1(queue) & QUEUE_STAT1_FULL); +} + -+static inline u32 queue_get_entry(unsigned int queue) ++static inline int qmgr_stat_underflow(unsigned int queue) +{ -+ u32 phys = qmgr_get_entry(queue); -+ debug_queue(queue, 1, phys); -+ return phys; ++ return !!(qmgr_get_stat2(queue) & QUEUE_STAT2_UNDERFLOW); +} + -+static inline int queue_get_desc(unsigned int queue, struct port *port, -+ int is_tx) ++static inline int qmgr_stat_overflow(unsigned int queue) +{ -+ u32 phys, tab_phys, n_desc; -+ struct desc *tab; ++ return !!(qmgr_get_stat2(queue) & QUEUE_STAT2_OVERFLOW); ++} + -+ if (!(phys = queue_get_entry(queue))) -+ return -1; ++#endif +Index: linux-2.6.24.7/include/asm-arm/arch-ixp4xx/npe.h +=================================================================== +--- /dev/null ++++ linux-2.6.24.7/include/asm-arm/arch-ixp4xx/npe.h +@@ -0,0 +1,39 @@ ++#ifndef __IXP4XX_NPE_H ++#define __IXP4XX_NPE_H + -+ BUG_ON(phys & 0x1F); -+ tab_phys = is_tx ? tx_desc_phys(port, 0) : rx_desc_phys(port, 0); -+ tab = is_tx ? tx_desc_ptr(port, 0) : rx_desc_ptr(port, 0); -+ n_desc = (phys - tab_phys) / sizeof(struct desc); -+ BUG_ON(n_desc >= (is_tx ? TX_DESCS : RX_DESCS)); -+ debug_desc(phys, &tab[n_desc]); -+ BUG_ON(tab[n_desc].next); -+ return n_desc; ++#include ++ ++extern const char *npe_names[]; ++ ++struct npe_regs { ++ u32 exec_addr, exec_data, exec_status_cmd, exec_count; ++ u32 action_points[4]; ++ u32 watchpoint_fifo, watch_count; ++ u32 profile_count; ++ u32 messaging_status, messaging_control; ++ u32 mailbox_status, /*messaging_*/ in_out_fifo; ++}; ++ ++struct npe { ++ struct resource *mem_res; ++ struct npe_regs __iomem *regs; ++ u32 regs_phys; ++ int id; ++ int valid; ++}; ++ ++ ++static inline const char *npe_name(struct npe *npe) ++{ ++ return npe_names[npe->id]; +} + -+static inline void queue_put_desc(unsigned int queue, u32 phys, -+ struct desc *desc) ++int npe_running(struct npe *npe); ++int npe_send_message(struct npe *npe, const void *msg, const char *what); ++int npe_recv_message(struct npe *npe, void *msg, const char *what); ++int npe_send_recv_message(struct npe *npe, void *msg, const char *what); ++int npe_load_firmware(struct npe *npe, const char *name, struct device *dev); ++struct npe *npe_request(int id); ++void npe_release(struct npe *npe); ++ ++#endif /* __IXP4XX_NPE_H */ +Index: linux-2.6.24.7/arch/arm/mach-ixp4xx/ixp4xx_qmgr.c +=================================================================== +--- /dev/null ++++ linux-2.6.24.7/arch/arm/mach-ixp4xx/ixp4xx_qmgr.c +@@ -0,0 +1,274 @@ ++/* ++ * Intel IXP4xx Queue Manager driver for Linux ++ * ++ * Copyright (C) 2007 Krzysztof Halasa ++ * ++ * This program is free software; you can redistribute it and/or modify it ++ * under the terms of version 2 of the GNU General Public License ++ * as published by the Free Software Foundation. ++ */ ++ ++#include ++#include ++#include ++#include ++#include ++ ++#define DEBUG 0 ++ ++struct qmgr_regs __iomem *qmgr_regs; ++static struct resource *mem_res; ++static spinlock_t qmgr_lock; ++static u32 used_sram_bitmap[4]; /* 128 16-dword pages */ ++static void (*irq_handlers[HALF_QUEUES])(void *pdev); ++static void *irq_pdevs[HALF_QUEUES]; ++ ++void qmgr_set_irq(unsigned int queue, int src, ++ void (*handler)(void *pdev), void *pdev) +{ -+ debug_queue(queue, 0, phys); -+ debug_desc(phys, desc); -+ BUG_ON(phys & 0x1F); -+ qmgr_put_entry(queue, phys); -+ BUG_ON(qmgr_stat_overflow(queue)); ++ u32 __iomem *reg = &qmgr_regs->irqsrc[queue / 8]; /* 8 queues / u32 */ ++ int bit = (queue % 8) * 4; /* 3 bits + 1 reserved bit per queue */ ++ unsigned long flags; ++ ++ src &= 7; ++ spin_lock_irqsave(&qmgr_lock, flags); ++ __raw_writel((__raw_readl(reg) & ~(7 << bit)) | (src << bit), reg); ++ irq_handlers[queue] = handler; ++ irq_pdevs[queue] = pdev; ++ spin_unlock_irqrestore(&qmgr_lock, flags); +} + + -+static inline void dma_unmap_tx(struct port *port, struct desc *desc) ++static irqreturn_t qmgr_irq1(int irq, void *pdev) +{ -+#ifdef __ARMEB__ -+ dma_unmap_single(&port->netdev->dev, desc->data, -+ desc->buf_len, DMA_TO_DEVICE); -+#else -+ dma_unmap_single(&port->netdev->dev, desc->data & ~3, -+ ALIGN((desc->data & 3) + desc->buf_len, 4), -+ DMA_TO_DEVICE); -+#endif ++ int i; ++ u32 val = __raw_readl(&qmgr_regs->irqstat[0]); ++ __raw_writel(val, &qmgr_regs->irqstat[0]); /* ACK */ ++ ++ for (i = 0; i < HALF_QUEUES; i++) ++ if (val & (1 << i)) ++ irq_handlers[i](irq_pdevs[i]); ++ ++ return val ? IRQ_HANDLED : 0; +} + + -+static void hss_hdlc_set_carrier(void *pdev, int carrier) ++void qmgr_enable_irq(unsigned int queue) +{ -+ struct net_device *dev = pdev; -+ if (carrier) -+ netif_carrier_on(dev); -+ else -+ netif_carrier_off(dev); ++ unsigned long flags; ++ ++ spin_lock_irqsave(&qmgr_lock, flags); ++ __raw_writel(__raw_readl(&qmgr_regs->irqen[0]) | (1 << queue), ++ &qmgr_regs->irqen[0]); ++ spin_unlock_irqrestore(&qmgr_lock, flags); +} + -+static void hss_hdlc_rx_irq(void *pdev) ++void qmgr_disable_irq(unsigned int queue) +{ -+ struct net_device *dev = pdev; -+ struct port *port = dev_to_port(dev); ++ unsigned long flags; + -+#if DEBUG_RX -+ printk(KERN_DEBUG "%s: hss_hdlc_rx_irq\n", dev->name); -+#endif -+ qmgr_disable_irq(queue_ids[port->id].rx); -+ netif_rx_schedule(dev); ++ spin_lock_irqsave(&qmgr_lock, flags); ++ __raw_writel(__raw_readl(&qmgr_regs->irqen[0]) & ~(1 << queue), ++ &qmgr_regs->irqen[0]); ++ spin_unlock_irqrestore(&qmgr_lock, flags); +} + -+static int hss_hdlc_poll(struct net_device *dev, int *budget) ++static inline void shift_mask(u32 *mask) +{ -+ struct port *port = dev_to_port(dev); -+ unsigned int rxq = queue_ids[port->id].rx; -+ unsigned int rxfreeq = queue_ids[port->id].rxfree; -+ struct net_device_stats *stats = hdlc_stats(dev); -+ int quota = dev->quota, received = 0; ++ mask[3] = mask[3] << 1 | mask[2] >> 31; ++ mask[2] = mask[2] << 1 | mask[1] >> 31; ++ mask[1] = mask[1] << 1 | mask[0] >> 31; ++ mask[0] <<= 1; ++} + -+#if DEBUG_RX -+ printk(KERN_DEBUG "%s: hss_hdlc_poll\n", dev->name); -+#endif ++int qmgr_request_queue(unsigned int queue, unsigned int len /* dwords */, ++ unsigned int nearly_empty_watermark, ++ unsigned int nearly_full_watermark) ++{ ++ u32 cfg, addr = 0, mask[4]; /* in 16-dwords */ ++ int err; + -+ while (quota) { -+ struct sk_buff *skb; -+ struct desc *desc; -+ int n; -+#ifdef __ARMEB__ -+ struct sk_buff *temp; -+ u32 phys; -+#endif ++ if (queue >= HALF_QUEUES) ++ return -ERANGE; + -+ if ((n = queue_get_desc(rxq, port, 0)) < 0) { -+ dev->quota -= received; /* No packet received */ -+ *budget -= received; -+ received = 0; -+#if DEBUG_RX -+ printk(KERN_DEBUG "%s: hss_hdlc_poll" -+ " netif_rx_complete\n", dev->name); -+#endif -+ netif_rx_complete(dev); -+ qmgr_enable_irq(rxq); -+ if (!qmgr_stat_empty(rxq) && -+ netif_rx_reschedule(dev, 0)) { -+#if DEBUG_RX -+ printk(KERN_DEBUG "%s: hss_hdlc_poll" -+ " netif_rx_reschedule successed\n", -+ dev->name); -+#endif -+ qmgr_disable_irq(rxq); -+ continue; -+ } -+#if DEBUG_RX -+ printk(KERN_DEBUG "%s: hss_hdlc_poll all done\n", -+ dev->name); -+#endif -+ return 0; /* all work done */ -+ } ++ if ((nearly_empty_watermark | nearly_full_watermark) & ~7) ++ return -EINVAL; + -+ desc = rx_desc_ptr(port, n); ++ switch (len) { ++ case 16: ++ cfg = 0 << 24; ++ mask[0] = 0x1; ++ break; ++ case 32: ++ cfg = 1 << 24; ++ mask[0] = 0x3; ++ break; ++ case 64: ++ cfg = 2 << 24; ++ mask[0] = 0xF; ++ break; ++ case 128: ++ cfg = 3 << 24; ++ mask[0] = 0xFF; ++ break; ++ default: ++ return -EINVAL; ++ } + -+ if (desc->error_count) /* FIXME - remove printk */ -+ printk(KERN_DEBUG "%s: hss_hdlc_poll status 0x%02X" -+ " errors %u\n", dev->name, desc->status, -+ desc->error_count); ++ cfg |= nearly_empty_watermark << 26; ++ cfg |= nearly_full_watermark << 29; ++ len /= 16; /* in 16-dwords: 1, 2, 4 or 8 */ ++ mask[1] = mask[2] = mask[3] = 0; + -+ skb = NULL; -+ switch (desc->status) { -+ case 0: -+#ifdef __ARMEB__ -+ if ((skb = netdev_alloc_skb(dev, RX_SIZE)) != NULL) { -+ phys = dma_map_single(&dev->dev, skb->data, -+ RX_SIZE, -+ DMA_FROM_DEVICE); -+ if (dma_mapping_error(phys)) { -+ dev_kfree_skb(skb); -+ skb = NULL; -+ } -+ } -+#else -+ skb = netdev_alloc_skb(dev, desc->pkt_len); -+#endif -+ if (!skb) -+ stats->rx_dropped++; -+ break; -+ case ERR_HDLC_ALIGN: -+ case ERR_HDLC_ABORT: -+ stats->rx_frame_errors++; -+ stats->rx_errors++; -+ break; -+ case ERR_HDLC_FCS: -+ stats->rx_crc_errors++; -+ stats->rx_errors++; -+ break; -+ case ERR_HDLC_TOO_LONG: -+ stats->rx_length_errors++; -+ stats->rx_errors++; -+ break; -+ default: /* FIXME - remove printk */ -+ printk(KERN_ERR "%s: hss_hdlc_poll: status 0x%02X" -+ " errors %u\n", dev->name, desc->status, -+ desc->error_count); -+ stats->rx_errors++; -+ } ++ if (!try_module_get(THIS_MODULE)) ++ return -ENODEV; + -+ if (!skb) { -+ /* put the desc back on RX-ready queue */ -+ desc->buf_len = RX_SIZE; -+ desc->pkt_len = desc->status = 0; -+ queue_put_desc(rxfreeq, rx_desc_phys(port, n), desc); -+ continue; ++ spin_lock_irq(&qmgr_lock); ++ if (__raw_readl(&qmgr_regs->sram[queue])) { ++ err = -EBUSY; ++ goto err; ++ } ++ ++ while (1) { ++ if (!(used_sram_bitmap[0] & mask[0]) && ++ !(used_sram_bitmap[1] & mask[1]) && ++ !(used_sram_bitmap[2] & mask[2]) && ++ !(used_sram_bitmap[3] & mask[3])) ++ break; /* found free space */ ++ ++ addr++; ++ shift_mask(mask); ++ if (addr + len > ARRAY_SIZE(qmgr_regs->sram)) { ++ printk(KERN_ERR "qmgr: no free SRAM space for" ++ " queue %i\n", queue); ++ err = -ENOMEM; ++ goto err; + } ++ } + -+ /* process received frame */ -+#ifdef __ARMEB__ -+ temp = skb; -+ skb = port->rx_buff_tab[n]; -+ dma_unmap_single(&dev->dev, desc->data, -+ RX_SIZE, DMA_FROM_DEVICE); -+#else -+ dma_sync_single(&dev->dev, desc->data, -+ RX_SIZE, DMA_FROM_DEVICE); -+ memcpy_swab32((u32 *)skb->data, (u32 *)port->rx_buff_tab[n], -+ ALIGN(desc->pkt_len, 4) / 4); ++ used_sram_bitmap[0] |= mask[0]; ++ used_sram_bitmap[1] |= mask[1]; ++ used_sram_bitmap[2] |= mask[2]; ++ used_sram_bitmap[3] |= mask[3]; ++ __raw_writel(cfg | (addr << 14), &qmgr_regs->sram[queue]); ++ spin_unlock_irq(&qmgr_lock); ++ ++#if DEBUG ++ printk(KERN_DEBUG "qmgr: requested queue %i, addr = 0x%02X\n", ++ queue, addr); +#endif -+ skb_put(skb, desc->pkt_len); ++ return 0; ++ ++err: ++ spin_unlock_irq(&qmgr_lock); ++ module_put(THIS_MODULE); ++ return err; ++} ++ ++void qmgr_release_queue(unsigned int queue) ++{ ++ u32 cfg, addr, mask[4]; ++ ++ BUG_ON(queue >= HALF_QUEUES); /* not in valid range */ ++ ++ spin_lock_irq(&qmgr_lock); ++ cfg = __raw_readl(&qmgr_regs->sram[queue]); ++ addr = (cfg >> 14) & 0xFF; ++ ++ BUG_ON(!addr); /* not requested */ ++ ++ switch ((cfg >> 24) & 3) { ++ case 0: mask[0] = 0x1; break; ++ case 1: mask[0] = 0x3; break; ++ case 2: mask[0] = 0xF; break; ++ case 3: mask[0] = 0xFF; break; ++ } ++ ++ while (addr--) ++ shift_mask(mask); + -+ debug_pkt(dev, "hss_hdlc_poll", skb->data, skb->len); ++ __raw_writel(0, &qmgr_regs->sram[queue]); + -+ skb->protocol = hdlc_type_trans(skb, dev); -+ dev->last_rx = jiffies; -+ stats->rx_packets++; -+ stats->rx_bytes += skb->len; -+ netif_receive_skb(skb); ++ used_sram_bitmap[0] &= ~mask[0]; ++ used_sram_bitmap[1] &= ~mask[1]; ++ used_sram_bitmap[2] &= ~mask[2]; ++ used_sram_bitmap[3] &= ~mask[3]; ++ irq_handlers[queue] = NULL; /* catch IRQ bugs */ ++ spin_unlock_irq(&qmgr_lock); + -+ /* put the new buffer on RX-free queue */ -+#ifdef __ARMEB__ -+ port->rx_buff_tab[n] = temp; -+ desc->data = phys; -+#endif -+ desc->buf_len = RX_SIZE; -+ desc->pkt_len = 0; -+ queue_put_desc(rxfreeq, rx_desc_phys(port, n), desc); -+ quota--; -+ received++; -+ } -+ dev->quota -= received; -+ *budget -= received; -+#if DEBUG_RX -+ printk(KERN_DEBUG "hss_hdlc_poll: end, not all work done\n"); ++ module_put(THIS_MODULE); ++#if DEBUG ++ printk(KERN_DEBUG "qmgr: released queue %i\n", queue); +#endif -+ return 1; /* not all work done */ +} + -+ -+static void hss_hdlc_txdone_irq(void *pdev) ++static int qmgr_init(void) +{ -+ struct net_device *dev = pdev; -+ struct port *port = dev_to_port(dev); -+ struct net_device_stats *stats = hdlc_stats(dev); -+ int n_desc; -+ -+#if DEBUG_TX -+ printk(KERN_DEBUG DRV_NAME ": hss_hdlc_txdone_irq\n"); -+#endif -+ while ((n_desc = queue_get_desc(queue_ids[port->id].txdone, -+ port, 1)) >= 0) { -+ struct desc *desc; -+ int start; ++ int i, err; ++ mem_res = request_mem_region(IXP4XX_QMGR_BASE_PHYS, ++ IXP4XX_QMGR_REGION_SIZE, ++ "IXP4xx Queue Manager"); ++ if (mem_res == NULL) ++ return -EBUSY; + -+ desc = tx_desc_ptr(port, n_desc); ++ qmgr_regs = ioremap(IXP4XX_QMGR_BASE_PHYS, IXP4XX_QMGR_REGION_SIZE); ++ if (qmgr_regs == NULL) { ++ err = -ENOMEM; ++ goto error_map; ++ } + -+ stats->tx_packets++; -+ stats->tx_bytes += desc->pkt_len; ++ /* reset qmgr registers */ ++ for (i = 0; i < 4; i++) { ++ __raw_writel(0x33333333, &qmgr_regs->stat1[i]); ++ __raw_writel(0, &qmgr_regs->irqsrc[i]); ++ } ++ for (i = 0; i < 2; i++) { ++ __raw_writel(0, &qmgr_regs->stat2[i]); ++ __raw_writel(0xFFFFFFFF, &qmgr_regs->irqstat[i]); /* clear */ ++ __raw_writel(0, &qmgr_regs->irqen[i]); ++ } + -+ dma_unmap_tx(port, desc); -+#if DEBUG_TX -+ printk(KERN_DEBUG "%s: hss_hdlc_txdone_irq free %p\n", -+ port->netdev->name, port->tx_buff_tab[n_desc]); -+#endif -+ free_buffer_irq(port->tx_buff_tab[n_desc]); -+ port->tx_buff_tab[n_desc] = NULL; ++ for (i = 0; i < QUEUES; i++) ++ __raw_writel(0, &qmgr_regs->sram[i]); + -+ start = qmgr_stat_empty(port->plat->txreadyq); -+ queue_put_desc(port->plat->txreadyq, -+ tx_desc_phys(port, n_desc), desc); -+ if (start) { -+#if DEBUG_TX -+ printk(KERN_DEBUG "%s: hss_hdlc_txdone_irq xmit" -+ " ready\n", port->netdev->name); -+#endif -+ netif_wake_queue(port->netdev); -+ } ++ err = request_irq(IRQ_IXP4XX_QM1, qmgr_irq1, 0, ++ "IXP4xx Queue Manager", NULL); ++ if (err) { ++ printk(KERN_ERR "qmgr: failed to request IRQ%i\n", ++ IRQ_IXP4XX_QM1); ++ goto error_irq; + } ++ ++ used_sram_bitmap[0] = 0xF; /* 4 first pages reserved for config */ ++ spin_lock_init(&qmgr_lock); ++ ++ printk(KERN_INFO "IXP4xx Queue Manager initialized.\n"); ++ return 0; ++ ++error_irq: ++ iounmap(qmgr_regs); ++error_map: ++ release_mem_region(IXP4XX_QMGR_BASE_PHYS, IXP4XX_QMGR_REGION_SIZE); ++ return err; +} + -+static int hss_hdlc_xmit(struct sk_buff *skb, struct net_device *dev) ++static void qmgr_remove(void) +{ -+ struct port *port = dev_to_port(dev); -+ struct net_device_stats *stats = hdlc_stats(dev); -+ unsigned int txreadyq = port->plat->txreadyq; -+ int len, offset, bytes, n; -+ void *mem; -+ u32 phys; -+ struct desc *desc; ++ free_irq(IRQ_IXP4XX_QM1, NULL); ++ synchronize_irq(IRQ_IXP4XX_QM1); ++ iounmap(qmgr_regs); ++ release_mem_region(IXP4XX_QMGR_BASE_PHYS, IXP4XX_QMGR_REGION_SIZE); ++} + -+#if DEBUG_TX -+ printk(KERN_DEBUG "%s: hss_hdlc_xmit\n", dev->name); -+#endif ++module_init(qmgr_init); ++module_exit(qmgr_remove); + -+ if (unlikely(skb->len > HDLC_MAX_MRU)) { -+ dev_kfree_skb(skb); -+ stats->tx_errors++; -+ return NETDEV_TX_OK; -+ } ++MODULE_LICENSE("GPL v2"); ++MODULE_AUTHOR("Krzysztof Halasa"); + -+ debug_pkt(dev, "hss_hdlc_xmit", skb->data, skb->len); ++EXPORT_SYMBOL(qmgr_regs); ++EXPORT_SYMBOL(qmgr_set_irq); ++EXPORT_SYMBOL(qmgr_enable_irq); ++EXPORT_SYMBOL(qmgr_disable_irq); ++EXPORT_SYMBOL(qmgr_request_queue); ++EXPORT_SYMBOL(qmgr_release_queue); +Index: linux-2.6.24.7/arch/arm/mach-ixp4xx/ixp4xx_npe.c +=================================================================== +--- /dev/null ++++ linux-2.6.24.7/arch/arm/mach-ixp4xx/ixp4xx_npe.c +@@ -0,0 +1,741 @@ ++/* ++ * Intel IXP4xx Network Processor Engine driver for Linux ++ * ++ * Copyright (C) 2007 Krzysztof Halasa ++ * ++ * This program is free software; you can redistribute it and/or modify it ++ * under the terms of version 2 of the GNU General Public License ++ * as published by the Free Software Foundation. ++ * ++ * The code is based on publicly available information: ++ * - Intel IXP4xx Developer's Manual and other e-papers ++ * - Intel IXP400 Access Library Software (BSD license) ++ * - previous works by Christian Hohnstaedt ++ * Thanks, Christian. ++ */ ++ ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++ ++#define DEBUG_MSG 0 ++#define DEBUG_FW 0 ++ ++#define NPE_COUNT 3 ++#define MAX_RETRIES 1000 /* microseconds */ ++#define NPE_42X_DATA_SIZE 0x800 /* in dwords */ ++#define NPE_46X_DATA_SIZE 0x1000 ++#define NPE_A_42X_INSTR_SIZE 0x1000 ++#define NPE_B_AND_C_42X_INSTR_SIZE 0x800 ++#define NPE_46X_INSTR_SIZE 0x1000 ++#define REGS_SIZE 0x1000 ++ ++#define NPE_PHYS_REG 32 ++ ++#define FW_MAGIC 0xFEEDF00D ++#define FW_BLOCK_TYPE_INSTR 0x0 ++#define FW_BLOCK_TYPE_DATA 0x1 ++#define FW_BLOCK_TYPE_EOF 0xF ++ ++/* NPE exec status (read) and command (write) */ ++#define CMD_NPE_STEP 0x01 ++#define CMD_NPE_START 0x02 ++#define CMD_NPE_STOP 0x03 ++#define CMD_NPE_CLR_PIPE 0x04 ++#define CMD_CLR_PROFILE_CNT 0x0C ++#define CMD_RD_INS_MEM 0x10 /* instruction memory */ ++#define CMD_WR_INS_MEM 0x11 ++#define CMD_RD_DATA_MEM 0x12 /* data memory */ ++#define CMD_WR_DATA_MEM 0x13 ++#define CMD_RD_ECS_REG 0x14 /* exec access register */ ++#define CMD_WR_ECS_REG 0x15 ++ ++#define STAT_RUN 0x80000000 ++#define STAT_STOP 0x40000000 ++#define STAT_CLEAR 0x20000000 ++#define STAT_ECS_K 0x00800000 /* pipeline clean */ ++ ++#define NPE_STEVT 0x1B ++#define NPE_STARTPC 0x1C ++#define NPE_REGMAP 0x1E ++#define NPE_CINDEX 0x1F ++ ++#define INSTR_WR_REG_SHORT 0x0000C000 ++#define INSTR_WR_REG_BYTE 0x00004000 ++#define INSTR_RD_FIFO 0x0F888220 ++#define INSTR_RESET_MBOX 0x0FAC8210 ++ ++#define ECS_BG_CTXT_REG_0 0x00 /* Background Executing Context */ ++#define ECS_BG_CTXT_REG_1 0x01 /* Stack level */ ++#define ECS_BG_CTXT_REG_2 0x02 ++#define ECS_PRI_1_CTXT_REG_0 0x04 /* Priority 1 Executing Context */ ++#define ECS_PRI_1_CTXT_REG_1 0x05 /* Stack level */ ++#define ECS_PRI_1_CTXT_REG_2 0x06 ++#define ECS_PRI_2_CTXT_REG_0 0x08 /* Priority 2 Executing Context */ ++#define ECS_PRI_2_CTXT_REG_1 0x09 /* Stack level */ ++#define ECS_PRI_2_CTXT_REG_2 0x0A ++#define ECS_DBG_CTXT_REG_0 0x0C /* Debug Executing Context */ ++#define ECS_DBG_CTXT_REG_1 0x0D /* Stack level */ ++#define ECS_DBG_CTXT_REG_2 0x0E ++#define ECS_INSTRUCT_REG 0x11 /* NPE Instruction Register */ ++ ++#define ECS_REG_0_ACTIVE 0x80000000 /* all levels */ ++#define ECS_REG_0_NEXTPC_MASK 0x1FFF0000 /* BG/PRI1/PRI2 levels */ ++#define ECS_REG_0_LDUR_BITS 8 ++#define ECS_REG_0_LDUR_MASK 0x00000700 /* all levels */ ++#define ECS_REG_1_CCTXT_BITS 16 ++#define ECS_REG_1_CCTXT_MASK 0x000F0000 /* all levels */ ++#define ECS_REG_1_SELCTXT_BITS 0 ++#define ECS_REG_1_SELCTXT_MASK 0x0000000F /* all levels */ ++#define ECS_DBG_REG_2_IF 0x00100000 /* debug level */ ++#define ECS_DBG_REG_2_IE 0x00080000 /* debug level */ ++ ++/* NPE watchpoint_fifo register bit */ ++#define WFIFO_VALID 0x80000000 ++ ++/* NPE messaging_status register bit definitions */ ++#define MSGSTAT_OFNE 0x00010000 /* OutFifoNotEmpty */ ++#define MSGSTAT_IFNF 0x00020000 /* InFifoNotFull */ ++#define MSGSTAT_OFNF 0x00040000 /* OutFifoNotFull */ ++#define MSGSTAT_IFNE 0x00080000 /* InFifoNotEmpty */ ++#define MSGSTAT_MBINT 0x00100000 /* Mailbox interrupt */ ++#define MSGSTAT_IFINT 0x00200000 /* InFifo interrupt */ ++#define MSGSTAT_OFINT 0x00400000 /* OutFifo interrupt */ ++#define MSGSTAT_WFINT 0x00800000 /* WatchFifo interrupt */ ++ ++/* NPE messaging_control register bit definitions */ ++#define MSGCTL_OUT_FIFO 0x00010000 /* enable output FIFO */ ++#define MSGCTL_IN_FIFO 0x00020000 /* enable input FIFO */ ++#define MSGCTL_OUT_FIFO_WRITE 0x01000000 /* enable FIFO + WRITE */ ++#define MSGCTL_IN_FIFO_WRITE 0x02000000 + -+ len = skb->len; -+#ifdef __ARMEB__ -+ offset = 0; /* no need to keep alignment */ -+ bytes = len; -+ mem = skb->data; -+#else -+ offset = (int)skb->data & 3; /* keep 32-bit alignment */ -+ bytes = ALIGN(offset + len, 4); -+ if (!(mem = kmalloc(bytes, GFP_ATOMIC))) { -+ dev_kfree_skb(skb); -+ stats->tx_dropped++; -+ return NETDEV_TX_OK; -+ } -+ memcpy_swab32(mem, (u32 *)((int)skb->data & ~3), bytes / 4); -+ dev_kfree_skb(skb); -+#endif ++/* NPE mailbox_status value for reset */ ++#define RESET_MBOX_STAT 0x0000F0F0 + -+ phys = dma_map_single(&dev->dev, mem, bytes, DMA_TO_DEVICE); -+ if (dma_mapping_error(phys)) { -+#ifdef __ARMEB__ -+ dev_kfree_skb(skb); -+#else -+ kfree(mem); -+#endif -+ stats->tx_dropped++; -+ return NETDEV_TX_OK; -+ } ++const char *npe_names[] = { "NPE-A", "NPE-B", "NPE-C" }; + -+ n = queue_get_desc(txreadyq, port, 1); -+ BUG_ON(n < 0); -+ desc = tx_desc_ptr(port, n); ++#define print_npe(pri, npe, fmt, ...) \ ++ printk(pri "%s: " fmt, npe_name(npe), ## __VA_ARGS__) + -+#ifdef __ARMEB__ -+ port->tx_buff_tab[n] = skb; ++#if DEBUG_MSG ++#define debug_msg(npe, fmt, ...) \ ++ print_npe(KERN_DEBUG, npe, fmt, ## __VA_ARGS__) +#else -+ port->tx_buff_tab[n] = mem; ++#define debug_msg(npe, fmt, ...) +#endif -+ desc->data = phys + offset; -+ desc->buf_len = desc->pkt_len = len; + -+ wmb(); -+ queue_put_desc(queue_ids[port->id].tx, tx_desc_phys(port, n), desc); -+ dev->trans_start = jiffies; ++static struct { ++ u32 reg, val; ++} ecs_reset[] = { ++ { ECS_BG_CTXT_REG_0, 0xA0000000 }, ++ { ECS_BG_CTXT_REG_1, 0x01000000 }, ++ { ECS_BG_CTXT_REG_2, 0x00008000 }, ++ { ECS_PRI_1_CTXT_REG_0, 0x20000080 }, ++ { ECS_PRI_1_CTXT_REG_1, 0x01000000 }, ++ { ECS_PRI_1_CTXT_REG_2, 0x00008000 }, ++ { ECS_PRI_2_CTXT_REG_0, 0x20000080 }, ++ { ECS_PRI_2_CTXT_REG_1, 0x01000000 }, ++ { ECS_PRI_2_CTXT_REG_2, 0x00008000 }, ++ { ECS_DBG_CTXT_REG_0, 0x20000000 }, ++ { ECS_DBG_CTXT_REG_1, 0x00000000 }, ++ { ECS_DBG_CTXT_REG_2, 0x001E0000 }, ++ { ECS_INSTRUCT_REG, 0x1003C00F }, ++}; + -+ if (qmgr_stat_empty(txreadyq)) { -+#if DEBUG_TX -+ printk(KERN_DEBUG "%s: hss_hdlc_xmit queue full\n", dev->name); -+#endif -+ netif_stop_queue(dev); -+ /* we could miss TX ready interrupt */ -+ if (!qmgr_stat_empty(txreadyq)) { -+#if DEBUG_TX -+ printk(KERN_DEBUG "%s: hss_hdlc_xmit ready again\n", -+ dev->name); -+#endif -+ netif_wake_queue(dev); -+ } ++static struct npe npe_tab[NPE_COUNT] = { ++ { ++ .id = 0, ++ .regs = (struct npe_regs __iomem *)IXP4XX_NPEA_BASE_VIRT, ++ .regs_phys = IXP4XX_NPEA_BASE_PHYS, ++ }, { ++ .id = 1, ++ .regs = (struct npe_regs __iomem *)IXP4XX_NPEB_BASE_VIRT, ++ .regs_phys = IXP4XX_NPEB_BASE_PHYS, ++ }, { ++ .id = 2, ++ .regs = (struct npe_regs __iomem *)IXP4XX_NPEC_BASE_VIRT, ++ .regs_phys = IXP4XX_NPEC_BASE_PHYS, + } ++}; + -+#if DEBUG_TX -+ printk(KERN_DEBUG "%s: hss_hdlc_xmit end\n", dev->name); -+#endif -+ return NETDEV_TX_OK; ++int npe_running(struct npe *npe) ++{ ++ return (__raw_readl(&npe->regs->exec_status_cmd) & STAT_RUN) != 0; +} + -+ -+static int request_hdlc_queues(struct port *port) ++static void npe_cmd_write(struct npe *npe, u32 addr, int cmd, u32 data) +{ -+ int err; -+ -+ err = qmgr_request_queue(queue_ids[port->id].rxfree, RX_DESCS, 0, 0); -+ if (err) -+ return err; -+ -+ err = qmgr_request_queue(queue_ids[port->id].rx, RX_DESCS, 0, 0); -+ if (err) -+ goto rel_rxfree; ++ __raw_writel(data, &npe->regs->exec_data); ++ __raw_writel(addr, &npe->regs->exec_addr); ++ __raw_writel(cmd, &npe->regs->exec_status_cmd); ++} + -+ err = qmgr_request_queue(queue_ids[port->id].tx, TX_DESCS, 0, 0); -+ if (err) -+ goto rel_rx; ++static u32 npe_cmd_read(struct npe *npe, u32 addr, int cmd) ++{ ++ __raw_writel(addr, &npe->regs->exec_addr); ++ __raw_writel(cmd, &npe->regs->exec_status_cmd); ++ /* Iintroduce extra read cycles after issuing read command to NPE ++ so that we read the register after the NPE has updated it. ++ This is to overcome race condition between XScale and NPE */ ++ __raw_readl(&npe->regs->exec_data); ++ __raw_readl(&npe->regs->exec_data); ++ return __raw_readl(&npe->regs->exec_data); ++} + -+ err = qmgr_request_queue(port->plat->txreadyq, TX_DESCS, 0, 0); -+ if (err) -+ goto rel_tx; ++static void npe_clear_active(struct npe *npe, u32 reg) ++{ ++ u32 val = npe_cmd_read(npe, reg, CMD_RD_ECS_REG); ++ npe_cmd_write(npe, reg, CMD_WR_ECS_REG, val & ~ECS_REG_0_ACTIVE); ++} + -+ err = qmgr_request_queue(queue_ids[port->id].txdone, TX_DESCS, 0, 0); -+ if (err) -+ goto rel_txready; -+ return 0; ++static void npe_start(struct npe *npe) ++{ ++ /* ensure only Background Context Stack Level is active */ ++ npe_clear_active(npe, ECS_PRI_1_CTXT_REG_0); ++ npe_clear_active(npe, ECS_PRI_2_CTXT_REG_0); ++ npe_clear_active(npe, ECS_DBG_CTXT_REG_0); + -+rel_txready: -+ qmgr_release_queue(port->plat->txreadyq); -+rel_tx: -+ qmgr_release_queue(queue_ids[port->id].tx); -+rel_rx: -+ qmgr_release_queue(queue_ids[port->id].rx); -+rel_rxfree: -+ qmgr_release_queue(queue_ids[port->id].rxfree); -+ printk(KERN_DEBUG "%s: unable to request hardware queues\n", -+ port->netdev->name); -+ return err; ++ __raw_writel(CMD_NPE_CLR_PIPE, &npe->regs->exec_status_cmd); ++ __raw_writel(CMD_NPE_START, &npe->regs->exec_status_cmd); +} + -+static void release_hdlc_queues(struct port *port) ++static void npe_stop(struct npe *npe) +{ -+ qmgr_release_queue(queue_ids[port->id].rxfree); -+ qmgr_release_queue(queue_ids[port->id].rx); -+ qmgr_release_queue(queue_ids[port->id].txdone); -+ qmgr_release_queue(queue_ids[port->id].tx); -+ qmgr_release_queue(port->plat->txreadyq); ++ __raw_writel(CMD_NPE_STOP, &npe->regs->exec_status_cmd); ++ __raw_writel(CMD_NPE_CLR_PIPE, &npe->regs->exec_status_cmd); /*FIXME?*/ +} + -+static int init_hdlc_queues(struct port *port) ++static int __must_check npe_debug_instr(struct npe *npe, u32 instr, u32 ctx, ++ u32 ldur) +{ ++ u32 wc; + int i; + -+ if (!ports_open) -+ if (!(dma_pool = dma_pool_create(DRV_NAME, NULL, -+ POOL_ALLOC_SIZE, 32, 0))) -+ return -ENOMEM; ++ /* set the Active bit, and the LDUR, in the debug level */ ++ npe_cmd_write(npe, ECS_DBG_CTXT_REG_0, CMD_WR_ECS_REG, ++ ECS_REG_0_ACTIVE | (ldur << ECS_REG_0_LDUR_BITS)); + -+ if (!(port->desc_tab = dma_pool_alloc(dma_pool, GFP_KERNEL, -+ &port->desc_tab_phys))) -+ return -ENOMEM; -+ memset(port->desc_tab, 0, POOL_ALLOC_SIZE); -+ memset(port->rx_buff_tab, 0, sizeof(port->rx_buff_tab)); /* tables */ -+ memset(port->tx_buff_tab, 0, sizeof(port->tx_buff_tab)); ++ /* set CCTXT at ECS DEBUG L3 to specify in which context to execute ++ the instruction, and set SELCTXT at ECS DEBUG Level to specify ++ which context store to access. ++ Debug ECS Level Reg 1 has form 0x000n000n, where n = context number ++ */ ++ npe_cmd_write(npe, ECS_DBG_CTXT_REG_1, CMD_WR_ECS_REG, ++ (ctx << ECS_REG_1_CCTXT_BITS) | ++ (ctx << ECS_REG_1_SELCTXT_BITS)); + -+ /* Setup RX buffers */ -+ for (i = 0; i < RX_DESCS; i++) { -+ struct desc *desc = rx_desc_ptr(port, i); -+ buffer_t *buff; -+ void *data; -+#ifdef __ARMEB__ -+ if (!(buff = netdev_alloc_skb(port->netdev, RX_SIZE))) -+ return -ENOMEM; -+ data = buff->data; -+#else -+ if (!(buff = kmalloc(RX_SIZE, GFP_KERNEL))) -+ return -ENOMEM; -+ data = buff; -+#endif -+ desc->buf_len = RX_SIZE; -+ desc->data = dma_map_single(&port->netdev->dev, data, -+ RX_SIZE, DMA_FROM_DEVICE); -+ if (dma_mapping_error(desc->data)) { -+ free_buffer(buff); -+ return -EIO; -+ } -+ port->rx_buff_tab[i] = buff; -+ } ++ /* clear the pipeline */ ++ __raw_writel(CMD_NPE_CLR_PIPE, &npe->regs->exec_status_cmd); + -+ return 0; -+} ++ /* load NPE instruction into the instruction register */ ++ npe_cmd_write(npe, ECS_INSTRUCT_REG, CMD_WR_ECS_REG, instr); + -+static void destroy_hdlc_queues(struct port *port) -+{ -+ int i; ++ /* we need this value later to wait for completion of NPE execution ++ step */ ++ wc = __raw_readl(&npe->regs->watch_count); + -+ if (port->desc_tab) { -+ for (i = 0; i < RX_DESCS; i++) { -+ struct desc *desc = rx_desc_ptr(port, i); -+ buffer_t *buff = port->rx_buff_tab[i]; -+ if (buff) { -+ dma_unmap_single(&port->netdev->dev, -+ desc->data, RX_SIZE, -+ DMA_FROM_DEVICE); -+ free_buffer(buff); -+ } -+ } -+ for (i = 0; i < TX_DESCS; i++) { -+ struct desc *desc = tx_desc_ptr(port, i); -+ buffer_t *buff = port->tx_buff_tab[i]; -+ if (buff) { -+ dma_unmap_tx(port, desc); -+ free_buffer(buff); -+ } -+ } -+ dma_pool_free(dma_pool, port->desc_tab, port->desc_tab_phys); -+ port->desc_tab = NULL; ++ /* issue a Step One command via the Execution Control register */ ++ __raw_writel(CMD_NPE_STEP, &npe->regs->exec_status_cmd); ++ ++ /* Watch Count register increments when NPE completes an instruction */ ++ for (i = 0; i < MAX_RETRIES; i++) { ++ if (wc != __raw_readl(&npe->regs->watch_count)) ++ return 0; ++ udelay(1); + } + -+ if (!ports_open && dma_pool) { -+ dma_pool_destroy(dma_pool); -+ dma_pool = NULL; -+ } ++ print_npe(KERN_ERR, npe, "reset: npe_debug_instr(): timeout\n"); ++ return -ETIMEDOUT; +} + -+static int hss_hdlc_open(struct net_device *dev) ++static int __must_check npe_logical_reg_write8(struct npe *npe, u32 addr, ++ u8 val, u32 ctx) +{ -+ struct port *port = dev_to_port(dev); -+ struct npe *npe = port->npe; -+ struct msg msg; -+ int i, err; -+ -+ if (!npe_running(npe)) { -+ err = npe_load_firmware(npe, npe_name(npe), &dev->dev); -+ if (err) -+ return err; -+ } ++ /* here we build the NPE assembler instruction: mov8 d0, #0 */ ++ u32 instr = INSTR_WR_REG_BYTE | /* OpCode */ ++ addr << 9 | /* base Operand */ ++ (val & 0x1F) << 4 | /* lower 5 bits to immediate data */ ++ (val & ~0x1F) << (18 - 5);/* higher 3 bits to CoProc instr. */ ++ return npe_debug_instr(npe, instr, ctx, 1); /* execute it */ ++} + -+ if ((err = hdlc_open(dev)) != 0) -+ return err; ++static int __must_check npe_logical_reg_write16(struct npe *npe, u32 addr, ++ u16 val, u32 ctx) ++{ ++ /* here we build the NPE assembler instruction: mov16 d0, #0 */ ++ u32 instr = INSTR_WR_REG_SHORT | /* OpCode */ ++ addr << 9 | /* base Operand */ ++ (val & 0x1F) << 4 | /* lower 5 bits to immediate data */ ++ (val & ~0x1F) << (18 - 5);/* higher 11 bits to CoProc instr. */ ++ return npe_debug_instr(npe, instr, ctx, 1); /* execute it */ ++} + -+ if (port->plat->open) -+ if ((err = port->plat->open(port->id, port->netdev, -+ hss_hdlc_set_carrier)) != 0) -+ goto err_hdlc_close; ++static int __must_check npe_logical_reg_write32(struct npe *npe, u32 addr, ++ u32 val, u32 ctx) ++{ ++ /* write in 16 bit steps first the high and then the low value */ ++ if (npe_logical_reg_write16(npe, addr, val >> 16, ctx)) ++ return -ETIMEDOUT; ++ return npe_logical_reg_write16(npe, addr + 2, val & 0xFFFF, ctx); ++} + -+ /* HSS main configuration */ -+ memset(&msg, 0, sizeof(msg)); -+ msg.cmd = PORT_CONFIG_WRITE; -+ msg.hss_port = port->id; -+ msg.index = 0; /* offset in HSS config */ ++static int npe_reset(struct npe *npe) ++{ ++ u32 val, ctl, exec_count, ctx_reg2; ++ int i; + -+ msg.data32 = PCR_FRM_PULSE_DISABLED | -+ PCR_SOF_NO_FBIT | -+ PCR_MSB_ENDIAN | -+ PCR_TX_DATA_ENABLE; ++ ctl = (__raw_readl(&npe->regs->messaging_control) | 0x3F000000) & ++ 0x3F3FFFFF; + -+ if (port->clock_type == CLOCK_INT) -+ msg.data32 |= PCR_SYNC_CLK_DIR_OUTPUT; ++ /* disable parity interrupt */ ++ __raw_writel(ctl & 0x3F00FFFF, &npe->regs->messaging_control); + -+ if ((err = npe_send_message(npe, &msg, "HSS_SET_TX_PCR") != 0)) -+ goto err_plat_close; /* 0: TX PCR */ ++ /* pre exec - debug instruction */ ++ /* turn off the halt bit by clearing Execution Count register. */ ++ exec_count = __raw_readl(&npe->regs->exec_count); ++ __raw_writel(0, &npe->regs->exec_count); ++ /* ensure that IF and IE are on (temporarily), so that we don't end up ++ stepping forever */ ++ ctx_reg2 = npe_cmd_read(npe, ECS_DBG_CTXT_REG_2, CMD_RD_ECS_REG); ++ npe_cmd_write(npe, ECS_DBG_CTXT_REG_2, CMD_WR_ECS_REG, ctx_reg2 | ++ ECS_DBG_REG_2_IF | ECS_DBG_REG_2_IE); + -+ msg.index = 4; -+ msg.data32 ^= PCR_TX_DATA_ENABLE | PCR_DCLK_EDGE_RISING; -+ if ((err = npe_send_message(npe, &msg, "HSS_SET_RX_PCR") != 0)) -+ goto err_plat_close; /* 4: RX PCR */ ++ /* clear the FIFOs */ ++ while (__raw_readl(&npe->regs->watchpoint_fifo) & WFIFO_VALID) ++ ; ++ while (__raw_readl(&npe->regs->messaging_status) & MSGSTAT_OFNE) ++ /* read from the outFIFO until empty */ ++ print_npe(KERN_DEBUG, npe, "npe_reset: read FIFO = 0x%X\n", ++ __raw_readl(&npe->regs->in_out_fifo)); + -+ msg.index = 8; -+ msg.data32 = (port->loopback ? CCR_LOOPBACK : 0) | -+ (port->id ? CCR_SECOND_HSS : 0); -+ if ((err = npe_send_message(npe, &msg, "HSS_SET_CORE_CR") != 0)) -+ goto err_plat_close; /* 8: Core CR */ ++ while (__raw_readl(&npe->regs->messaging_status) & MSGSTAT_IFNE) ++ /* step execution of the NPE intruction to read inFIFO using ++ the Debug Executing Context stack */ ++ if (npe_debug_instr(npe, INSTR_RD_FIFO, 0, 0)) ++ return -ETIMEDOUT; + -+ msg.index = 12; -+ msg.data32 = CLK42X_SPEED_2048KHZ /* FIXME */; -+ if ((err = npe_send_message(npe, &msg, "HSS_SET_CLK_CR") != 0)) -+ goto err_plat_close; /* 12: CLK CR */ ++ /* reset the mailbox reg from the XScale side */ ++ __raw_writel(RESET_MBOX_STAT, &npe->regs->mailbox_status); ++ /* from NPE side */ ++ if (npe_debug_instr(npe, INSTR_RESET_MBOX, 0, 0)) ++ return -ETIMEDOUT; + -+ msg.data32 = (FRAME_SYNC_OFFSET << 16) | (FRAME_SYNC_SIZE - 1); -+ msg.index = 16; -+ if ((err = npe_send_message(npe, &msg, "HSS_SET_TX_FCR") != 0)) -+ goto err_plat_close; /* 16: TX FCR */ ++ /* Reset the physical registers in the NPE register file */ ++ for (val = 0; val < NPE_PHYS_REG; val++) { ++ if (npe_logical_reg_write16(npe, NPE_REGMAP, val >> 1, 0)) ++ return -ETIMEDOUT; ++ /* address is either 0 or 4 */ ++ if (npe_logical_reg_write32(npe, (val & 1) * 4, 0, 0)) ++ return -ETIMEDOUT; ++ } + -+ msg.index = 20; -+ if ((err = npe_send_message(npe, &msg, "HSS_SET_RX_FCR") != 0)) -+ goto err_plat_close; /* 20: RX FCR */ ++ /* Reset the context store = each context's Context Store registers */ + -+ msg.data32 = 0; /* Fill LUT with HDLC timeslots */ -+ for (i = 0; i < 32 / LUT_BITS; i++) -+ msg.data32 |= TDMMAP_HDLC << (LUT_BITS * i); ++ /* Context 0 has no STARTPC. Instead, this value is used to set NextPC ++ for Background ECS, to set where NPE starts executing code */ ++ val = npe_cmd_read(npe, ECS_BG_CTXT_REG_0, CMD_RD_ECS_REG); ++ val &= ~ECS_REG_0_NEXTPC_MASK; ++ val |= (0 /* NextPC */ << 16) & ECS_REG_0_NEXTPC_MASK; ++ npe_cmd_write(npe, ECS_BG_CTXT_REG_0, CMD_WR_ECS_REG, val); + -+ for (i = 0; i < 2 /* TX and RX */ * TIMESLOTS * LUT_BITS / 8; i += 4) { -+ msg.index = 24 + i; /* 24 - 55: TX LUT, 56 - 87: RX LUT */ -+ if ((err = npe_send_message(npe, &msg, "HSS_SET_LUT") != 0)) -+ goto err_plat_close; ++ for (i = 0; i < 16; i++) { ++ if (i) { /* Context 0 has no STEVT nor STARTPC */ ++ /* STEVT = off, 0x80 */ ++ if (npe_logical_reg_write8(npe, NPE_STEVT, 0x80, i)) ++ return -ETIMEDOUT; ++ if (npe_logical_reg_write16(npe, NPE_STARTPC, 0, i)) ++ return -ETIMEDOUT; ++ } ++ /* REGMAP = d0->p0, d8->p2, d16->p4 */ ++ if (npe_logical_reg_write16(npe, NPE_REGMAP, 0x820, i)) ++ return -ETIMEDOUT; ++ if (npe_logical_reg_write8(npe, NPE_CINDEX, 0, i)) ++ return -ETIMEDOUT; + } + -+ /* HDLC mode configuration */ -+ memset(&msg, 0, sizeof(msg)); -+ msg.cmd = PKT_NUM_PIPES_WRITE; -+ msg.hss_port = port->id; -+ msg.data8a = PKT_NUM_PIPES; -+ if ((err = npe_send_message(npe, &msg, "HSS_SET_PKT_PIPES") != 0)) -+ goto err_plat_close; ++ /* post exec */ ++ /* clear active bit in debug level */ ++ npe_cmd_write(npe, ECS_DBG_CTXT_REG_0, CMD_WR_ECS_REG, 0); ++ /* clear the pipeline */ ++ __raw_writel(CMD_NPE_CLR_PIPE, &npe->regs->exec_status_cmd); ++ /* restore previous values */ ++ __raw_writel(exec_count, &npe->regs->exec_count); ++ npe_cmd_write(npe, ECS_DBG_CTXT_REG_2, CMD_WR_ECS_REG, ctx_reg2); + -+ memset(&msg, 0, sizeof(msg)); -+ msg.cmd = PKT_PIPE_FIFO_SIZEW_WRITE; -+ msg.hss_port = port->id; -+ msg.data8a = PKT_PIPE_FIFO_SIZEW; -+ if ((err = npe_send_message(npe, &msg, "HSS_SET_PKT_FIFO") != 0)) -+ goto err_plat_close; ++ /* write reset values to Execution Context Stack registers */ ++ for (val = 0; val < ARRAY_SIZE(ecs_reset); val++) ++ npe_cmd_write(npe, ecs_reset[val].reg, CMD_WR_ECS_REG, ++ ecs_reset[val].val); + -+ memset(&msg, 0, sizeof(msg)); -+ msg.cmd = PKT_PIPE_IDLE_PATTERN_WRITE; -+ msg.hss_port = port->id; -+ msg.data32 = 0x7F7F7F7F; -+ if ((err = npe_send_message(npe, &msg, "HSS_SET_PKT_IDLE") != 0)) -+ goto err_plat_close; ++ /* clear the profile counter */ ++ __raw_writel(CMD_CLR_PROFILE_CNT, &npe->regs->exec_status_cmd); + -+ memset(&msg, 0, sizeof(msg)); -+ msg.cmd = PORT_CONFIG_LOAD; -+ msg.hss_port = port->id; -+ if ((err = npe_send_message(npe, &msg, "HSS_LOAD_CONFIG") != 0)) -+ goto err_plat_close; -+ if ((err = npe_recv_message(npe, &msg, "HSS_LOAD_CONFIG") != 0)) -+ goto err_plat_close; ++ __raw_writel(0, &npe->regs->exec_count); ++ __raw_writel(0, &npe->regs->action_points[0]); ++ __raw_writel(0, &npe->regs->action_points[1]); ++ __raw_writel(0, &npe->regs->action_points[2]); ++ __raw_writel(0, &npe->regs->action_points[3]); ++ __raw_writel(0, &npe->regs->watch_count); + -+ /* HSS_LOAD_CONFIG for port #1 returns port_id = #4 */ -+ if (msg.cmd != PORT_CONFIG_LOAD || msg.data32) { -+ printk(KERN_DEBUG "%s: unexpected message received in" -+ " response to HSS_LOAD_CONFIG\n", npe_name(npe)); -+ err = EIO; -+ goto err_plat_close; ++ val = ixp4xx_read_feature_bits(); ++ /* reset the NPE */ ++ ixp4xx_write_feature_bits(val & ++ ~(IXP4XX_FEATURE_RESET_NPEA << npe->id)); ++ for (i = 0; i < MAX_RETRIES; i++) { ++ if (!(ixp4xx_read_feature_bits() & ++ (IXP4XX_FEATURE_RESET_NPEA << npe->id))) ++ break; /* reset completed */ ++ udelay(1); + } ++ if (i == MAX_RETRIES) ++ return -ETIMEDOUT; + -+ memset(&msg, 0, sizeof(msg)); -+ msg.cmd = PKT_PIPE_HDLC_CFG_WRITE; -+ msg.hss_port = port->id; -+ msg.data8a = port->hdlc_cfg; /* rx_cfg */ -+ msg.data8b = port->hdlc_cfg | (PKT_EXTRA_FLAGS << 3); /* tx_cfg */ -+ if ((err = npe_send_message(npe, &msg, "HSS_SET_HDLC_CFG") != 0)) -+ goto err_plat_close; ++ /* deassert reset */ ++ ixp4xx_write_feature_bits(val | ++ (IXP4XX_FEATURE_RESET_NPEA << npe->id)); ++ for (i = 0; i < MAX_RETRIES; i++) { ++ if (ixp4xx_read_feature_bits() & ++ (IXP4XX_FEATURE_RESET_NPEA << npe->id)) ++ break; /* NPE is back alive */ ++ udelay(1); ++ } ++ if (i == MAX_RETRIES) ++ return -ETIMEDOUT; + -+ memset(&msg, 0, sizeof(msg)); -+ msg.cmd = PKT_PIPE_MODE_WRITE; -+ msg.hss_port = port->id; -+ msg.data8a = NPE_PKT_MODE_HDLC; -+ /* msg.data8b = inv_mask */ -+ /* msg.data8c = or_mask */ -+ if ((err = npe_send_message(npe, &msg, "HSS_SET_PKT_MODE") != 0)) -+ goto err_plat_close; ++ npe_stop(npe); + -+ memset(&msg, 0, sizeof(msg)); -+ msg.cmd = PKT_PIPE_RX_SIZE_WRITE; -+ msg.hss_port = port->id; -+ msg.data16a = HDLC_MAX_MRU; -+ if ((err = npe_send_message(npe, &msg, "HSS_SET_PKT_RX_SIZE") != 0)) -+ goto err_plat_close; ++ /* restore NPE configuration bus Control Register - parity settings */ ++ __raw_writel(ctl, &npe->regs->messaging_control); ++ return 0; ++} + -+ if ((err = request_hdlc_queues(port)) != 0) -+ goto err_plat_close; + -+ if ((err = init_hdlc_queues(port)) != 0) -+ goto err_destroy_queues; ++int npe_send_message(struct npe *npe, const void *msg, const char *what) ++{ ++ const u32 *send = msg; ++ int cycles = 0; + -+ memset(&msg, 0, sizeof(msg)); -+ msg.cmd = PKT_PIPE_FLOW_ENABLE; -+ msg.hss_port = port->id; -+ if ((err = npe_send_message(npe, &msg, "HSS_ENABLE_PKT_PIPE") != 0)) -+ goto err_destroy_queues; ++ debug_msg(npe, "Trying to send message %s [%08X:%08X]\n", ++ what, send[0], send[1]); + -+ /* Populate queues with buffers, no failure after this point */ -+ for (i = 0; i < TX_DESCS; i++) -+ queue_put_desc(port->plat->txreadyq, -+ tx_desc_phys(port, i), tx_desc_ptr(port, i)); ++ if (__raw_readl(&npe->regs->messaging_status) & MSGSTAT_IFNE) { ++ debug_msg(npe, "NPE input FIFO not empty\n"); ++ return -EIO; ++ } + -+ for (i = 0; i < RX_DESCS; i++) -+ queue_put_desc(queue_ids[port->id].rxfree, -+ rx_desc_phys(port, i), rx_desc_ptr(port, i)); ++ __raw_writel(send[0], &npe->regs->in_out_fifo); + -+ netif_start_queue(dev); ++ if (!(__raw_readl(&npe->regs->messaging_status) & MSGSTAT_IFNF)) { ++ debug_msg(npe, "NPE input FIFO full\n"); ++ return -EIO; ++ } + -+ qmgr_set_irq(queue_ids[port->id].rx, QUEUE_IRQ_SRC_NOT_EMPTY, -+ hss_hdlc_rx_irq, dev); ++ __raw_writel(send[1], &npe->regs->in_out_fifo); + -+ qmgr_set_irq(queue_ids[port->id].txdone, QUEUE_IRQ_SRC_NOT_EMPTY, -+ hss_hdlc_txdone_irq, dev); -+ qmgr_enable_irq(queue_ids[port->id].txdone); ++ while ((cycles < MAX_RETRIES) && ++ (__raw_readl(&npe->regs->messaging_status) & MSGSTAT_IFNE)) { ++ udelay(1); ++ cycles++; ++ } + -+ ports_open++; -+ netif_rx_schedule(dev); /* we may already have RX data, enables IRQ */ -+ return 0; ++ if (cycles == MAX_RETRIES) { ++ debug_msg(npe, "Timeout sending message\n"); ++ return -ETIMEDOUT; ++ } + -+err_destroy_queues: -+ destroy_hdlc_queues(port); -+ release_hdlc_queues(port); -+err_plat_close: -+ if (port->plat->close) -+ port->plat->close(port->id, port->netdev); -+err_hdlc_close: -+ hdlc_close(dev); -+ return err; ++ debug_msg(npe, "Sending a message took %i cycles\n", cycles); ++ return 0; +} + -+static int hss_hdlc_close(struct net_device *dev) ++int npe_recv_message(struct npe *npe, void *msg, const char *what) +{ -+ struct port *port = dev_to_port(dev); -+ struct npe *npe = port->npe; -+ struct msg msg; -+ int buffs = RX_DESCS; /* allocated RX buffers */ -+ int i; ++ u32 *recv = msg; ++ int cycles = 0, cnt = 0; + -+ ports_open--; -+ qmgr_disable_irq(queue_ids[port->id].rx); -+ netif_stop_queue(dev); ++ debug_msg(npe, "Trying to receive message %s\n", what); + -+ memset(&msg, 0, sizeof(msg)); -+ msg.cmd = PKT_PIPE_FLOW_DISABLE; -+ msg.hss_port = port->id; -+ if (npe_send_message(npe, &msg, "HSS_DISABLE_PKT_PIPE")) { -+ printk(KERN_CRIT "HSS-%i: unable to stop HDLC flow\n", -+ port->id); -+ /* The upper level would ignore the error anyway */ ++ while (cycles < MAX_RETRIES) { ++ if (__raw_readl(&npe->regs->messaging_status) & MSGSTAT_OFNE) { ++ recv[cnt++] = __raw_readl(&npe->regs->in_out_fifo); ++ if (cnt == 2) ++ break; ++ } else { ++ udelay(1); ++ cycles++; ++ } + } + -+ while (queue_get_desc(queue_ids[port->id].rxfree, port, 0) >= 0) -+ buffs--; -+ while (queue_get_desc(queue_ids[port->id].rx, port, 0) >= 0) -+ buffs--; -+ -+ if (buffs) -+ printk(KERN_CRIT "%s: unable to drain RX queue, %i buffer(s)" -+ " left in NPE\n", dev->name, buffs); -+ -+ buffs = TX_DESCS; -+ while (queue_get_desc(queue_ids[port->id].tx, port, 1) >= 0) -+ buffs--; /* cancel TX */ -+ -+ i = 0; -+ do { -+ while (queue_get_desc(port->plat->txreadyq, port, 1) >= 0) -+ buffs--; -+ if (!buffs) -+ break; -+ } while (++i < MAX_CLOSE_WAIT); ++ switch(cnt) { ++ case 1: ++ debug_msg(npe, "Received [%08X]\n", recv[0]); ++ break; ++ case 2: ++ debug_msg(npe, "Received [%08X:%08X]\n", recv[0], recv[1]); ++ break; ++ } + -+ if (buffs) -+ printk(KERN_CRIT "%s: unable to drain TX queue, %i buffer(s) " -+ "left in NPE\n", dev->name, buffs); -+#if DEBUG_CLOSE -+ if (!buffs) -+ printk(KERN_DEBUG "Draining TX queues took %i cycles\n", i); -+#endif -+ qmgr_disable_irq(queue_ids[port->id].txdone); -+ destroy_hdlc_queues(port); -+ release_hdlc_queues(port); ++ if (cycles == MAX_RETRIES) { ++ debug_msg(npe, "Timeout waiting for message\n"); ++ return -ETIMEDOUT; ++ } + -+ if (port->plat->close) -+ port->plat->close(port->id, port->netdev); -+ hdlc_close(dev); ++ debug_msg(npe, "Receiving a message took %i cycles\n", cycles); + return 0; +} + -+ -+static int hss_hdlc_attach(struct net_device *dev, unsigned short encoding, -+ unsigned short parity) ++int npe_send_recv_message(struct npe *npe, void *msg, const char *what) +{ -+ struct port *port = dev_to_port(dev); -+ -+ if (encoding != ENCODING_NRZ) -+ return -EINVAL; -+ -+ switch(parity) { -+ case PARITY_CRC16_PR1_CCITT: -+ port->hdlc_cfg = 0; -+ return 0; ++ int result; ++ u32 *send = msg, recv[2]; + -+ case PARITY_CRC32_PR1_CCITT: -+ port->hdlc_cfg = PKT_HDLC_CRC_32; -+ return 0; ++ if ((result = npe_send_message(npe, msg, what)) != 0) ++ return result; ++ if ((result = npe_recv_message(npe, recv, what)) != 0) ++ return result; + -+ default: -+ return -EINVAL; ++ if ((recv[0] != send[0]) || (recv[1] != send[1])) { ++ debug_msg(npe, "Message %s: unexpected message received\n", ++ what); ++ return -EIO; + } ++ return 0; +} + + -+static int hss_hdlc_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) ++int npe_load_firmware(struct npe *npe, const char *name, struct device *dev) +{ -+ const size_t size = sizeof(sync_serial_settings); -+ sync_serial_settings new_line; -+ int clk; -+ sync_serial_settings __user *line = ifr->ifr_settings.ifs_ifsu.sync; -+ struct port *port = dev_to_port(dev); -+ -+ if (cmd != SIOCWANDEV) -+ return hdlc_ioctl(dev, ifr, cmd); ++ const struct firmware *fw_entry; + -+ switch(ifr->ifr_settings.type) { -+ case IF_GET_IFACE: -+ ifr->ifr_settings.type = IF_IFACE_V35; -+ if (ifr->ifr_settings.size < size) { -+ ifr->ifr_settings.size = size; /* data size wanted */ -+ return -ENOBUFS; -+ } -+ memset(&new_line, 0, sizeof(new_line)); -+ new_line.clock_type = port->clock_type; -+ new_line.clock_rate = port->clock_rate; -+ new_line.loopback = port->loopback; -+ if (copy_to_user(line, &new_line, size)) -+ return -EFAULT; -+ return 0; ++ struct dl_block { ++ u32 type; ++ u32 offset; ++ } *blk; + -+ case IF_IFACE_SYNC_SERIAL: -+ case IF_IFACE_V35: -+ if(!capable(CAP_NET_ADMIN)) -+ return -EPERM; -+ if (dev->flags & IFF_UP) -+ return -EBUSY; /* Cannot change parameters when open */ ++ struct dl_image { ++ u32 magic; ++ u32 id; ++ u32 size; ++ union { ++ u32 data[0]; ++ struct dl_block blocks[0]; ++ }; ++ } *image; + -+ if (copy_from_user(&new_line, line, size)) -+ return -EFAULT; ++ struct dl_codeblock { ++ u32 npe_addr; ++ u32 size; ++ u32 data[0]; ++ } *cb; + -+ clk = new_line.clock_type; -+ if (port->plat->set_clock) -+ clk = port->plat->set_clock(port->id, clk); ++ int i, j, err, data_size, instr_size, blocks, table_end; ++ u32 cmd; + -+ if (clk != CLOCK_EXT && clk != CLOCK_INT) -+ return -EINVAL; /* No such clock setting */ ++ if ((err = request_firmware(&fw_entry, name, dev)) != 0) ++ return err; + -+ if (new_line.loopback != 0 && new_line.loopback != 1) -+ return -EINVAL; ++ err = -EINVAL; ++ if (fw_entry->size < sizeof(struct dl_image)) { ++ print_npe(KERN_ERR, npe, "incomplete firmware file\n"); ++ goto err; ++ } ++ image = (struct dl_image*)fw_entry->data; + -+ port->clock_type = clk; /* Update settings */ -+ port->clock_rate = new_line.clock_rate; -+ port->loopback = new_line.loopback; -+ return 0; ++#if DEBUG_FW ++ print_npe(KERN_DEBUG, npe, "firmware: %08X %08X %08X (0x%X bytes)\n", ++ image->magic, image->id, image->size, image->size * 4); ++#endif + -+ default: -+ return hdlc_ioctl(dev, ifr, cmd); ++ if (image->magic == swab32(FW_MAGIC)) { /* swapped file */ ++ image->id = swab32(image->id); ++ image->size = swab32(image->size); ++ } else if (image->magic != FW_MAGIC) { ++ print_npe(KERN_ERR, npe, "bad firmware file magic: 0x%X\n", ++ image->magic); ++ goto err; ++ } ++ if ((image->size * 4 + sizeof(struct dl_image)) != fw_entry->size) { ++ print_npe(KERN_ERR, npe, ++ "inconsistent size of firmware file\n"); ++ goto err; ++ } ++ if (((image->id >> 24) & 0xF /* NPE ID */) != npe->id) { ++ print_npe(KERN_ERR, npe, "firmware file NPE ID mismatch\n"); ++ goto err; + } -+} ++ if (image->magic == swab32(FW_MAGIC)) ++ for (i = 0; i < image->size; i++) ++ image->data[i] = swab32(image->data[i]); + ++ if (!cpu_is_ixp46x() && ((image->id >> 28) & 0xF /* device ID */)) { ++ print_npe(KERN_INFO, npe, "IXP46x firmware ignored on " ++ "IXP42x\n"); ++ goto err; ++ } + -+static int __devinit hss_init_one(struct platform_device *pdev) -+{ -+ struct port *port; -+ struct net_device *dev; -+ hdlc_device *hdlc; -+ int err; ++ if (npe_running(npe)) { ++ print_npe(KERN_INFO, npe, "unable to load firmware, NPE is " ++ "already running\n"); ++ err = -EBUSY; ++ goto err; ++ } ++#if 0 ++ npe_stop(npe); ++ npe_reset(npe); ++#endif + -+ if ((port = kzalloc(sizeof(*port), GFP_KERNEL)) == NULL) -+ return -ENOMEM; -+ platform_set_drvdata(pdev, port); -+ port->id = pdev->id; ++ print_npe(KERN_INFO, npe, "firmware functionality 0x%X, " ++ "revision 0x%X:%X\n", (image->id >> 16) & 0xFF, ++ (image->id >> 8) & 0xFF, image->id & 0xFF); + -+ if ((port->npe = npe_request(0)) == NULL) { -+ err = -ENOSYS; -+ goto err_free; ++ if (!cpu_is_ixp46x()) { ++ if (!npe->id) ++ instr_size = NPE_A_42X_INSTR_SIZE; ++ else ++ instr_size = NPE_B_AND_C_42X_INSTR_SIZE; ++ data_size = NPE_42X_DATA_SIZE; ++ } else { ++ instr_size = NPE_46X_INSTR_SIZE; ++ data_size = NPE_46X_DATA_SIZE; + } + -+ port->plat = pdev->dev.platform_data; -+ if ((port->netdev = dev = alloc_hdlcdev(port)) == NULL) { -+ err = -ENOMEM; -+ goto err_plat; ++ for (blocks = 0; blocks * sizeof(struct dl_block) / 4 < image->size; ++ blocks++) ++ if (image->blocks[blocks].type == FW_BLOCK_TYPE_EOF) ++ break; ++ if (blocks * sizeof(struct dl_block) / 4 >= image->size) { ++ print_npe(KERN_INFO, npe, "firmware EOF block marker not " ++ "found\n"); ++ goto err; + } + -+ SET_MODULE_OWNER(net); -+ SET_NETDEV_DEV(dev, &pdev->dev); -+ hdlc = dev_to_hdlc(dev); -+ hdlc->attach = hss_hdlc_attach; -+ hdlc->xmit = hss_hdlc_xmit; -+ dev->open = hss_hdlc_open; -+ dev->poll = hss_hdlc_poll; -+ dev->stop = hss_hdlc_close; -+ dev->do_ioctl = hss_hdlc_ioctl; -+ dev->weight = 16; -+ dev->tx_queue_len = 100; -+ port->clock_type = CLOCK_EXT; -+ port->clock_rate = 2048000; ++#if DEBUG_FW ++ print_npe(KERN_DEBUG, npe, "%i firmware blocks found\n", blocks); ++#endif + -+ if (register_hdlc_device(dev)) { -+ printk(KERN_ERR "HSS-%i: unable to register HDLC device\n", -+ port->id); -+ err = -ENOBUFS; -+ goto err_free_netdev; -+ } -+ printk(KERN_INFO "%s: HSS-%i\n", dev->name, port->id); -+ return 0; ++ table_end = blocks * sizeof(struct dl_block) / 4 + 1 /* EOF marker */; ++ for (i = 0, blk = image->blocks; i < blocks; i++, blk++) { ++ if (blk->offset > image->size - sizeof(struct dl_codeblock) / 4 ++ || blk->offset < table_end) { ++ print_npe(KERN_INFO, npe, "invalid offset 0x%X of " ++ "firmware block #%i\n", blk->offset, i); ++ goto err; ++ } + -+err_free_netdev: -+ free_netdev(dev); -+err_plat: -+ npe_release(port->npe); -+ platform_set_drvdata(pdev, NULL); -+err_free: -+ kfree(port); -+ return err; -+} ++ cb = (struct dl_codeblock*)&image->data[blk->offset]; ++ if (blk->type == FW_BLOCK_TYPE_INSTR) { ++ if (cb->npe_addr + cb->size > instr_size) ++ goto too_big; ++ cmd = CMD_WR_INS_MEM; ++ } else if (blk->type == FW_BLOCK_TYPE_DATA) { ++ if (cb->npe_addr + cb->size > data_size) ++ goto too_big; ++ cmd = CMD_WR_DATA_MEM; ++ } else { ++ print_npe(KERN_INFO, npe, "invalid firmware block #%i " ++ "type 0x%X\n", i, blk->type); ++ goto err; ++ } ++ if (blk->offset + sizeof(*cb) / 4 + cb->size > image->size) { ++ print_npe(KERN_INFO, npe, "firmware block #%i doesn't " ++ "fit in firmware image: type %c, start 0x%X," ++ " length 0x%X\n", i, ++ blk->type == FW_BLOCK_TYPE_INSTR ? 'I' : 'D', ++ cb->npe_addr, cb->size); ++ goto err; ++ } + -+static int __devexit hss_remove_one(struct platform_device *pdev) -+{ -+ struct port *port = platform_get_drvdata(pdev); ++ for (j = 0; j < cb->size; j++) ++ npe_cmd_write(npe, cb->npe_addr + j, cmd, cb->data[j]); ++ } + -+ unregister_hdlc_device(port->netdev); -+ free_netdev(port->netdev); -+ npe_release(port->npe); -+ platform_set_drvdata(pdev, NULL); -+ kfree(port); ++ npe_start(npe); ++ if (!npe_running(npe)) ++ print_npe(KERN_ERR, npe, "unable to start\n"); ++ release_firmware(fw_entry); + return 0; -+} -+ -+static struct platform_driver drv = { -+ .driver.name = DRV_NAME, -+ .probe = hss_init_one, -+ .remove = hss_remove_one, -+}; + -+static int __init hss_init_module(void) -+{ -+ if ((ixp4xx_read_feature_bits() & -+ (IXP4XX_FEATURE_HDLC | IXP4XX_FEATURE_HSS)) != -+ (IXP4XX_FEATURE_HDLC | IXP4XX_FEATURE_HSS)) -+ return -ENOSYS; -+ return platform_driver_register(&drv); -+} -+ -+static void __exit hss_cleanup_module(void) -+{ -+ platform_driver_unregister(&drv); ++too_big: ++ print_npe(KERN_INFO, npe, "firmware block #%i doesn't fit in NPE " ++ "memory: type %c, start 0x%X, length 0x%X\n", i, ++ blk->type == FW_BLOCK_TYPE_INSTR ? 'I' : 'D', ++ cb->npe_addr, cb->size); ++err: ++ release_firmware(fw_entry); ++ return err; +} + -+MODULE_AUTHOR("Krzysztof Halasa"); -+MODULE_DESCRIPTION("Intel IXP4xx HSS driver"); -+MODULE_LICENSE("GPL v2"); -+module_init(hss_init_module); -+module_exit(hss_cleanup_module); -diff --git a/include/asm-arm/arch-ixp4xx/cpu.h b/include/asm-arm/arch-ixp4xx/cpu.h -index d2523b3..2fa3d6b 100644 ---- a/include/asm-arm/arch-ixp4xx/cpu.h -+++ b/include/asm-arm/arch-ixp4xx/cpu.h -@@ -28,4 +28,19 @@ extern unsigned int processor_id; - #define cpu_is_ixp46x() ((processor_id & IXP4XX_PROCESSOR_ID_MASK) == \ - IXP465_PROCESSOR_ID_VALUE) - -+static inline u32 ixp4xx_read_feature_bits(void) -+{ -+ unsigned int val = ~*IXP4XX_EXP_CFG2; -+ val &= ~IXP4XX_FEATURE_RESERVED; -+ if (!cpu_is_ixp46x()) -+ val &= ~IXP4XX_FEATURE_IXP46X_ONLY; -+ -+ return val; -+} + -+static inline void ixp4xx_write_feature_bits(u32 value) ++struct npe *npe_request(int id) +{ -+ *IXP4XX_EXP_CFG2 = ~value; -+} -+ - #endif /* _ASM_ARCH_CPU_H */ -diff --git a/include/asm-arm/arch-ixp4xx/hardware.h b/include/asm-arm/arch-ixp4xx/hardware.h -index 297ceda..73e8dc3 100644 ---- a/include/asm-arm/arch-ixp4xx/hardware.h -+++ b/include/asm-arm/arch-ixp4xx/hardware.h -@@ -27,13 +27,13 @@ - - #define pcibios_assign_all_busses() 1 - -+/* Register locations and bits */ -+#include "ixp4xx-regs.h" -+ - #ifndef __ASSEMBLER__ - #include - #endif - --/* Register locations and bits */ --#include "ixp4xx-regs.h" -- - /* Platform helper functions and definitions */ - #include "platform.h" - -diff --git a/include/asm-arm/arch-ixp4xx/ixp4xx-regs.h b/include/asm-arm/arch-ixp4xx/ixp4xx-regs.h -index 5d949d7..c704fe8 100644 ---- a/include/asm-arm/arch-ixp4xx/ixp4xx-regs.h -+++ b/include/asm-arm/arch-ixp4xx/ixp4xx-regs.h -@@ -15,10 +15,6 @@ - * - */ - --#ifndef __ASM_ARCH_HARDWARE_H__ --#error "Do not include this directly, instead #include " --#endif -- - #ifndef _ASM_ARM_IXP4XX_H_ - #define _ASM_ARM_IXP4XX_H_ - -@@ -607,4 +603,36 @@ - - #define DCMD_LENGTH 0x01fff /* length mask (max = 8K - 1) */ - -+/* "fuse" bits of IXP_EXP_CFG2 */ -+#define IXP4XX_FEATURE_RCOMP (1 << 0) -+#define IXP4XX_FEATURE_USB_DEVICE (1 << 1) -+#define IXP4XX_FEATURE_HASH (1 << 2) -+#define IXP4XX_FEATURE_AES (1 << 3) -+#define IXP4XX_FEATURE_DES (1 << 4) -+#define IXP4XX_FEATURE_HDLC (1 << 5) -+#define IXP4XX_FEATURE_AAL (1 << 6) -+#define IXP4XX_FEATURE_HSS (1 << 7) -+#define IXP4XX_FEATURE_UTOPIA (1 << 8) -+#define IXP4XX_FEATURE_NPEB_ETH0 (1 << 9) -+#define IXP4XX_FEATURE_NPEC_ETH (1 << 10) -+#define IXP4XX_FEATURE_RESET_NPEA (1 << 11) -+#define IXP4XX_FEATURE_RESET_NPEB (1 << 12) -+#define IXP4XX_FEATURE_RESET_NPEC (1 << 13) -+#define IXP4XX_FEATURE_PCI (1 << 14) -+#define IXP4XX_FEATURE_ECC_TIMESYNC (1 << 15) -+#define IXP4XX_FEATURE_UTOPIA_PHY_LIMIT (3 << 16) -+#define IXP4XX_FEATURE_USB_HOST (1 << 18) -+#define IXP4XX_FEATURE_NPEA_ETH (1 << 19) -+#define IXP4XX_FEATURE_NPEB_ETH_1_TO_3 (1 << 20) -+#define IXP4XX_FEATURE_RSA (1 << 21) -+#define IXP4XX_FEATURE_XSCALE_MAX_FREQ (3 << 22) -+#define IXP4XX_FEATURE_RESERVED (0xFF << 24) -+ -+#define IXP4XX_FEATURE_IXP46X_ONLY (IXP4XX_FEATURE_ECC_TIMESYNC | \ -+ IXP4XX_FEATURE_USB_HOST | \ -+ IXP4XX_FEATURE_NPEA_ETH | \ -+ IXP4XX_FEATURE_NPEB_ETH_1_TO_3 | \ -+ IXP4XX_FEATURE_RSA | \ -+ IXP4XX_FEATURE_XSCALE_MAX_FREQ) ++ if (id < NPE_COUNT) ++ if (npe_tab[id].valid) ++ if (try_module_get(THIS_MODULE)) ++ return &npe_tab[id]; ++ return NULL; ++} + - #endif -diff --git a/include/asm-arm/arch-ixp4xx/npe.h b/include/asm-arm/arch-ixp4xx/npe.h -new file mode 100644 -index 0000000..37d0511 ---- /dev/null -+++ b/include/asm-arm/arch-ixp4xx/npe.h -@@ -0,0 +1,39 @@ -+#ifndef __IXP4XX_NPE_H -+#define __IXP4XX_NPE_H ++void npe_release(struct npe *npe) ++{ ++ module_put(THIS_MODULE); ++} + -+#include + -+extern const char *npe_names[]; ++static int __init npe_init_module(void) ++{ + -+struct npe_regs { -+ u32 exec_addr, exec_data, exec_status_cmd, exec_count; -+ u32 action_points[4]; -+ u32 watchpoint_fifo, watch_count; -+ u32 profile_count; -+ u32 messaging_status, messaging_control; -+ u32 mailbox_status, /*messaging_*/ in_out_fifo; -+}; ++ int i, found = 0; + -+struct npe { -+ struct resource *mem_res; -+ struct npe_regs __iomem *regs; -+ u32 regs_phys; -+ int id; -+ int valid; -+}; ++ for (i = 0; i < NPE_COUNT; i++) { ++ struct npe *npe = &npe_tab[i]; ++ if (!(ixp4xx_read_feature_bits() & ++ (IXP4XX_FEATURE_RESET_NPEA << i))) ++ continue; /* NPE already disabled or not present */ ++ if (!(npe->mem_res = request_mem_region(npe->regs_phys, ++ REGS_SIZE, ++ npe_name(npe)))) { ++ print_npe(KERN_ERR, npe, ++ "failed to request memory region\n"); ++ continue; ++ } + ++ if (npe_reset(npe)) ++ continue; ++ npe->valid = 1; ++ found++; ++ } + -+static inline const char *npe_name(struct npe *npe) ++ if (!found) ++ return -ENOSYS; ++ return 0; ++} ++ ++static void __exit npe_cleanup_module(void) +{ -+ return npe_names[npe->id]; ++ int i; ++ ++ for (i = 0; i < NPE_COUNT; i++) ++ if (npe_tab[i].mem_res) { ++ npe_reset(&npe_tab[i]); ++ release_resource(npe_tab[i].mem_res); ++ } +} + -+int npe_running(struct npe *npe); -+int npe_send_message(struct npe *npe, const void *msg, const char *what); -+int npe_recv_message(struct npe *npe, void *msg, const char *what); -+int npe_send_recv_message(struct npe *npe, void *msg, const char *what); -+int npe_load_firmware(struct npe *npe, const char *name, struct device *dev); -+struct npe *npe_request(int id); -+void npe_release(struct npe *npe); ++module_init(npe_init_module); ++module_exit(npe_cleanup_module); + -+#endif /* __IXP4XX_NPE_H */ -diff --git a/include/asm-arm/arch-ixp4xx/platform.h b/include/asm-arm/arch-ixp4xx/platform.h -index 2a44d3d..695b9c4 100644 ---- a/include/asm-arm/arch-ixp4xx/platform.h -+++ b/include/asm-arm/arch-ixp4xx/platform.h -@@ -77,8 +77,7 @@ extern unsigned long ixp4xx_exp_bus_size; ++MODULE_AUTHOR("Krzysztof Halasa"); ++MODULE_LICENSE("GPL v2"); ++ ++EXPORT_SYMBOL(npe_names); ++EXPORT_SYMBOL(npe_running); ++EXPORT_SYMBOL(npe_request); ++EXPORT_SYMBOL(npe_release); ++EXPORT_SYMBOL(npe_load_firmware); ++EXPORT_SYMBOL(npe_send_message); ++EXPORT_SYMBOL(npe_recv_message); ++EXPORT_SYMBOL(npe_send_recv_message); +Index: linux-2.6.24.7/include/asm-arm/arch-ixp4xx/platform.h +=================================================================== +--- linux-2.6.24.7.orig/include/asm-arm/arch-ixp4xx/platform.h ++++ linux-2.6.24.7/include/asm-arm/arch-ixp4xx/platform.h +@@ -102,6 +102,27 @@ struct ixp4xx_pata_data { - /* - * The IXP4xx chips do not have an I2C unit, so GPIO lines are just -- * used to -- * Used as platform_data to provide GPIO pin information to the ixp42x -+ * used as platform_data to provide GPIO pin information to the ixp42x - * I2C driver. - */ - struct ixp4xx_i2c_pins { -@@ -86,6 +85,27 @@ struct ixp4xx_i2c_pins { - unsigned long scl_pin; - }; + struct sys_timer; +#define IXP4XX_ETH_NPEA 0x00 +#define IXP4XX_ETH_NPEB 0x10 @@ -3901,150 +3985,52 @@ index 2a44d3d..695b9c4 100644 +}; + /* - * This structure provide a means for the board setup code - * to give information to th pata_ixp4xx driver. It is -diff --git a/include/asm-arm/arch-ixp4xx/qmgr.h b/include/asm-arm/arch-ixp4xx/qmgr.h -new file mode 100644 -index 0000000..1e52b95 ---- /dev/null -+++ b/include/asm-arm/arch-ixp4xx/qmgr.h -@@ -0,0 +1,126 @@ -+/* -+ * Copyright (C) 2007 Krzysztof Halasa -+ * -+ * This program is free software; you can redistribute it and/or modify it -+ * under the terms of version 2 of the GNU General Public License -+ * as published by the Free Software Foundation. -+ */ -+ -+#ifndef IXP4XX_QMGR_H -+#define IXP4XX_QMGR_H -+ -+#include -+#include -+ -+#define HALF_QUEUES 32 -+#define QUEUES 64 /* only 32 lower queues currently supported */ -+#define MAX_QUEUE_LENGTH 4 /* in dwords */ -+ -+#define QUEUE_STAT1_EMPTY 1 /* queue status bits */ -+#define QUEUE_STAT1_NEARLY_EMPTY 2 -+#define QUEUE_STAT1_NEARLY_FULL 4 -+#define QUEUE_STAT1_FULL 8 -+#define QUEUE_STAT2_UNDERFLOW 1 -+#define QUEUE_STAT2_OVERFLOW 2 -+ -+#define QUEUE_WATERMARK_0_ENTRIES 0 -+#define QUEUE_WATERMARK_1_ENTRY 1 -+#define QUEUE_WATERMARK_2_ENTRIES 2 -+#define QUEUE_WATERMARK_4_ENTRIES 3 -+#define QUEUE_WATERMARK_8_ENTRIES 4 -+#define QUEUE_WATERMARK_16_ENTRIES 5 -+#define QUEUE_WATERMARK_32_ENTRIES 6 -+#define QUEUE_WATERMARK_64_ENTRIES 7 -+ -+/* queue interrupt request conditions */ -+#define QUEUE_IRQ_SRC_EMPTY 0 -+#define QUEUE_IRQ_SRC_NEARLY_EMPTY 1 -+#define QUEUE_IRQ_SRC_NEARLY_FULL 2 -+#define QUEUE_IRQ_SRC_FULL 3 -+#define QUEUE_IRQ_SRC_NOT_EMPTY 4 -+#define QUEUE_IRQ_SRC_NOT_NEARLY_EMPTY 5 -+#define QUEUE_IRQ_SRC_NOT_NEARLY_FULL 6 -+#define QUEUE_IRQ_SRC_NOT_FULL 7 -+ -+struct qmgr_regs { -+ u32 acc[QUEUES][MAX_QUEUE_LENGTH]; /* 0x000 - 0x3FF */ -+ u32 stat1[4]; /* 0x400 - 0x40F */ -+ u32 stat2[2]; /* 0x410 - 0x417 */ -+ u32 statne_h; /* 0x418 - queue nearly empty */ -+ u32 statf_h; /* 0x41C - queue full */ -+ u32 irqsrc[4]; /* 0x420 - 0x42F IRC source */ -+ u32 irqen[2]; /* 0x430 - 0x437 IRQ enabled */ -+ u32 irqstat[2]; /* 0x438 - 0x43F - IRQ access only */ -+ u32 reserved[1776]; -+ u32 sram[2048]; /* 0x2000 - 0x3FFF - config and buffer */ + * Frequency of clock used for primary clocksource + */ +Index: linux-2.6.24.7/arch/arm/mach-ixp4xx/ixdp425-setup.c +=================================================================== +--- linux-2.6.24.7.orig/arch/arm/mach-ixp4xx/ixdp425-setup.c ++++ linux-2.6.24.7/arch/arm/mach-ixp4xx/ixdp425-setup.c +@@ -177,6 +177,31 @@ static struct platform_device ixdp425_ua + .resource = ixdp425_uart_resources + }; + ++/* Built-in 10/100 Ethernet MAC interfaces */ ++static struct eth_plat_info ixdp425_plat_eth[] = { ++ { ++ .phy = 0, ++ .rxq = 3, ++ .txreadyq = 20, ++ }, { ++ .phy = 1, ++ .rxq = 4, ++ .txreadyq = 21, ++ } +}; + -+void qmgr_set_irq(unsigned int queue, int src, -+ void (*handler)(void *pdev), void *pdev); -+void qmgr_enable_irq(unsigned int queue); -+void qmgr_disable_irq(unsigned int queue); -+ -+/* request_ and release_queue() must be called from non-IRQ context */ -+int qmgr_request_queue(unsigned int queue, unsigned int len /* dwords */, -+ unsigned int nearly_empty_watermark, -+ unsigned int nearly_full_watermark); -+void qmgr_release_queue(unsigned int queue); -+ -+ -+static inline void qmgr_put_entry(unsigned int queue, u32 val) -+{ -+ extern struct qmgr_regs __iomem *qmgr_regs; -+ __raw_writel(val, &qmgr_regs->acc[queue][0]); -+} -+ -+static inline u32 qmgr_get_entry(unsigned int queue) -+{ -+ extern struct qmgr_regs __iomem *qmgr_regs; -+ return __raw_readl(&qmgr_regs->acc[queue][0]); -+} -+ -+static inline int qmgr_get_stat1(unsigned int queue) -+{ -+ extern struct qmgr_regs __iomem *qmgr_regs; -+ return (__raw_readl(&qmgr_regs->stat1[queue >> 3]) -+ >> ((queue & 7) << 2)) & 0xF; -+} -+ -+static inline int qmgr_get_stat2(unsigned int queue) -+{ -+ extern struct qmgr_regs __iomem *qmgr_regs; -+ return (__raw_readl(&qmgr_regs->stat2[queue >> 4]) -+ >> ((queue & 0xF) << 1)) & 0x3; -+} -+ -+static inline int qmgr_stat_empty(unsigned int queue) -+{ -+ return !!(qmgr_get_stat1(queue) & QUEUE_STAT1_EMPTY); -+} -+ -+static inline int qmgr_stat_nearly_empty(unsigned int queue) -+{ -+ return !!(qmgr_get_stat1(queue) & QUEUE_STAT1_NEARLY_EMPTY); -+} -+ -+static inline int qmgr_stat_nearly_full(unsigned int queue) -+{ -+ return !!(qmgr_get_stat1(queue) & QUEUE_STAT1_NEARLY_FULL); -+} -+ -+static inline int qmgr_stat_full(unsigned int queue) -+{ -+ return !!(qmgr_get_stat1(queue) & QUEUE_STAT1_FULL); -+} -+ -+static inline int qmgr_stat_underflow(unsigned int queue) -+{ -+ return !!(qmgr_get_stat2(queue) & QUEUE_STAT2_UNDERFLOW); -+} -+ -+static inline int qmgr_stat_overflow(unsigned int queue) -+{ -+ return !!(qmgr_get_stat2(queue) & QUEUE_STAT2_OVERFLOW); -+} ++static struct platform_device ixdp425_eth[] = { ++ { ++ .name = "ixp4xx_eth", ++ .id = IXP4XX_ETH_NPEB, ++ .dev.platform_data = ixdp425_plat_eth, ++ }, { ++ .name = "ixp4xx_eth", ++ .id = IXP4XX_ETH_NPEC, ++ .dev.platform_data = ixdp425_plat_eth + 1, ++ } ++}; + -+#endif -diff --git a/include/asm-arm/arch-ixp4xx/uncompress.h b/include/asm-arm/arch-ixp4xx/uncompress.h -index f7a35b7..34ef48f 100644 ---- a/include/asm-arm/arch-ixp4xx/uncompress.h -+++ b/include/asm-arm/arch-ixp4xx/uncompress.h -@@ -13,7 +13,7 @@ - #ifndef _ARCH_UNCOMPRESS_H_ - #define _ARCH_UNCOMPRESS_H_ - --#include -+#include "ixp4xx-regs.h" - #include - #include + static struct platform_device *ixdp425_devices[] __initdata = { + &ixdp425_i2c_gpio, + &ixdp425_flash, +@@ -184,7 +209,9 @@ static struct platform_device *ixdp425_d + defined(CONFIG_MTD_NAND_PLATFORM_MODULE) + &ixdp425_flash_nand, + #endif +- &ixdp425_uart ++ &ixdp425_uart, ++ &ixdp425_eth[0], ++ &ixdp425_eth[1], + }; + static void __init ixdp425_init(void)