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ar71xx: add AR933x specific glue code for IRQ initialization
[openwrt.git] / target / linux / mpc83xx / patches-2.6.32 / 001-rb600.patch
1 --- /dev/null
2 +++ b/arch/powerpc/boot/dts/rb600.dts
3 @@ -0,0 +1,242 @@
4 +/*
5 + * RouterBOARD 600 series Device Tree Source
6 + *
7 + * Copyright 2009 Michael Guntsche <mike@it-loops.com>
8 + *
9 + * This program is free software; you can redistribute it and/or modify it
10 + * under the terms of the GNU General Public License as published by the
11 + * Free Software Foundation; either version 2 of the License, or (at your
12 + * option) any later version.
13 + */
14 +
15 +/dts-v1/;
16 +
17 +/ {
18 + model = "RB600";
19 + compatible = "MPC83xx";
20 + #address-cells = <1>;
21 + #size-cells = <1>;
22 +
23 + aliases {
24 + ethernet0 = &enet0;
25 + ethernet1 = &enet1;
26 + };
27 +
28 + chosen {
29 + linux,stdout-path = "/soc8343@e0000000/serial@4500";
30 + };
31 +
32 + cpus {
33 + #address-cells = <1>;
34 + #size-cells = <0>;
35 +
36 + PowerPC,8343E@0 {
37 + device_type = "cpu";
38 + reg = <0x0>;
39 + d-cache-line-size = <0x20>;
40 + i-cache-line-size = <0x20>;
41 + d-cache-size = <0x8000>;
42 + i-cache-size = <0x8000>;
43 + timebase-frequency = <0x0000000>; // filled by the bootwrapper from the firmware blob
44 + clock-frequency = <0x00000000>; // filled by the bootwrapper from the firmware blob
45 + };
46 + };
47 +
48 + memory {
49 + device_type = "memory";
50 + reg = <0x0 0x0000000>; // filled by the bootwrapper from the firmware blob
51 + };
52 +
53 + cf@f9200000 {
54 + lb-timings = <0x5dc 0x3e8 0x1194 0x5dc 0x2af8>;
55 + interrupt-at-level = <0x0>;
56 + interrupt-parent = <&ipic>;
57 + interrupts = <0x16 0x8>;
58 + lbc_extra_divider = <0x1>;
59 + reg = <0xf9200000 0x200000>;
60 + device_type = "rb,cf";
61 + };
62 +
63 + cf@f9000000 {
64 + lb-timings = <0x5dc 0x3e8 0x1194 0x5dc 0x2af8>;
65 + interrupt-at-level = <0x0>;
66 + interrupt-parent = <&ipic>;
67 + interrupts = <0x14 0x8>;
68 + lbc_extra_divider = <0x1>;
69 + reg = <0xf9000000 0x200000>;
70 + device_type = "rb,cf";
71 + };
72 +
73 + flash {
74 + reg = <0xff800000 0x20000>;
75 + };
76 +
77 + nnand {
78 + reg = <0xf0000000 0x1000>;
79 + };
80 +
81 + nand {
82 + ale = <&gpio 0x6>;
83 + cle = <&gpio 0x5>;
84 + nce = <&gpio 0x4>;
85 + rdy = <&gpio 0x3>;
86 + reg = <0xf8000000 0x1000>;
87 + device_type = "rb,nand";
88 + };
89 +
90 + fancon {
91 + interrupt-parent = <&ipic>;
92 + interrupts = <0x17 0x8>;
93 + sense = <&gpio 0x7>;
94 + fan_on = <&gpio 0x9>;
95 + };
96 +
97 + pci0: pci@e0008500 {
98 + device_type = "pci";
99 + compatible = "fsl,mpc8349-pci";
100 + reg = <0xe0008500 0x100 0xe0008300 0x8>;
101 + #address-cells = <3>;
102 + #size-cells = <2>;
103 + #interrupt-cells = <1>;
104 + ranges = <0x2000000 0x0 0x80000000 0x80000000 0x0 0x20000000 0x1000000 0x0 0x0 0xd0000000 0x0 0x4000000>;
105 + bus-range = <0x0 0x0>;
106 + interrupt-map = <
107 + 0x5800 0x0 0x0 0x1 &ipic 0x15 0x8
108 + 0x6000 0x0 0x0 0x1 &ipic 0x30 0x8
109 + 0x6000 0x0 0x0 0x2 &ipic 0x11 0x8
110 + 0x6800 0x0 0x0 0x1 &ipic 0x11 0x8
111 + 0x6800 0x0 0x0 0x2 &ipic 0x12 0x8
112 + 0x7000 0x0 0x0 0x1 &ipic 0x12 0x8
113 + 0x7000 0x0 0x0 0x2 &ipic 0x13 0x8
114 + 0x7800 0x0 0x0 0x1 &ipic 0x13 0x8
115 + 0x7800 0x0 0x0 0x2 &ipic 0x30 0x8
116 + 0x8000 0x0 0x0 0x1 &ipic 0x30 0x8
117 + 0x8000 0x0 0x0 0x2 &ipic 0x12 0x8
118 + 0x8000 0x0 0x0 0x3 &ipic 0x11 0x8
119 + 0x8000 0x0 0x0 0x4 &ipic 0x13 0x8
120 + 0xa000 0x0 0x0 0x1 &ipic 0x30 0x8
121 + 0xa000 0x0 0x0 0x2 &ipic 0x11 0x8
122 + 0xa000 0x0 0x0 0x3 &ipic 0x12 0x8
123 + 0xa000 0x0 0x0 0x4 &ipic 0x13 0x8
124 + 0xa800 0x0 0x0 0x1 &ipic 0x11 0x8
125 + 0xa800 0x0 0x0 0x2 &ipic 0x12 0x8
126 + 0xa800 0x0 0x0 0x3 &ipic 0x13 0x8
127 + 0xa800 0x0 0x0 0x4 &ipic 0x30 0x8>;
128 + interrupt-map-mask = <0xf800 0x0 0x0 0x7>;
129 + interrupt-parent = <&ipic>;
130 + };
131 +
132 + soc8343@e0000000 {
133 + #address-cells = <1>;
134 + #size-cells = <1>;
135 + device_type = "soc";
136 + compatible = "simple-bus";
137 + ranges = <0x0 0xe0000000 0x100000>;
138 + reg = <0xe0000000 0x200>;
139 + bus-frequency = <0x1>;
140 +
141 + led {
142 + user_led = <0x400 0x8>;
143 + };
144 +
145 + beeper {
146 + reg = <0x500 0x100>;
147 + };
148 +
149 + gpio: gpio@0 {
150 + reg = <0xc08 0x4>;
151 + device-id = <0x0>;
152 + compatible = "gpio";
153 + device_type = "gpio";
154 + };
155 +
156 + enet0: ethernet@25000 {
157 + #address-cells = <1>;
158 + #size-cells = <1>;
159 + cell-index = <0>;
160 + phy-handle = <&phy0>;
161 + tbi-handle = <&tbi0>;
162 + interrupt-parent = <&ipic>;
163 + interrupts = <0x23 0x8 0x24 0x8 0x25 0x8>;
164 + local-mac-address = [00 00 00 00 00 00];
165 + reg = <0x25000 0x1000>;
166 + ranges = <0x0 0x25000 0x1000>;
167 + compatible = "gianfar";
168 + model = "TSEC";
169 + device_type = "network";
170 +
171 + mdio@520 {
172 + #address-cells = <1>;
173 + #size-cells = <0>;
174 + compatible = "fsl,gianfar-tbi";
175 + reg = <0x520 0x20>;
176 +
177 + tbi0: tbi-phy@11 {
178 + reg = <0x11>;
179 + device_type = "tbi-phy";
180 + };
181 + };
182 + };
183 +
184 + enet1: ethernet@24000 {
185 + #address-cells = <1>;
186 + #size-cells = <1>;
187 + cell-index = <1>;
188 + phy-handle = <&phy1>;
189 + tbi-handle = <&tbi1>;
190 + interrupt-parent = <&ipic>;
191 + interrupts = <0x20 0x8 0x21 0x8 0x22 0x8>;
192 + local-mac-address = [00 00 00 00 00 00];
193 + reg = <0x24000 0x1000>;
194 + ranges = <0x0 0x24000 0x1000>;
195 + compatible = "gianfar";
196 + model = "TSEC";
197 + device_type = "network";
198 +
199 + mdio@520 {
200 + #size-cells = <0x0>;
201 + #address-cells = <0x1>;
202 + reg = <0x520 0x20>;
203 + compatible = "fsl,gianfar-mdio";
204 +
205 + phy0: ethernet-phy@0 {
206 + device_type = "ethernet-phy";
207 + reg = <0x0>;
208 + };
209 +
210 + phy1: ethernet-phy@1 {
211 + device_type = "ethernet-phy";
212 + reg = <0x1>;
213 + };
214 +
215 + tbi1: tbi-phy@11 {
216 + reg = <0x11>;
217 + device_type = "tbi-phy";
218 + };
219 + };
220 + };
221 +
222 + ipic: pic@700 {
223 + interrupt-controller;
224 + #address-cells = <0>;
225 + #interrupt-cells = <2>;
226 + reg = <0x700 0x100>;
227 + device_type = "ipic";
228 + };
229 +
230 + serial@4500 {
231 + interrupt-parent = <&ipic>;
232 + interrupts = <0x9 0x8>;
233 + clock-frequency = <0xfe4f840>;
234 + reg = <0x4500 0x100>;
235 + compatible = "ns16550";
236 + device_type = "serial";
237 + };
238 +
239 + wdt@200 {
240 + reg = <0x200 0x100>;
241 + compatible = "mpc83xx_wdt";
242 + device_type = "watchdog";
243 + };
244 + };
245 +};
246 --- a/arch/powerpc/boot/Makefile
247 +++ b/arch/powerpc/boot/Makefile
248 @@ -73,7 +73,7 @@ src-plat := of.c cuboot-52xx.c cuboot-82
249 cuboot-pq2.c cuboot-sequoia.c treeboot-walnut.c \
250 cuboot-bamboo.c cuboot-mpc7448hpc2.c cuboot-taishan.c \
251 fixed-head.S ep88xc.c ep405.c cuboot-c2k.c \
252 - cuboot-katmai.c cuboot-rainier.c redboot-8xx.c ep8248e.c \
253 + cuboot-katmai.c cuboot-rainier.c redboot-8xx.c ep8248e.c rb600.c \
254 cuboot-warp.c cuboot-85xx-cpm2.c cuboot-yosemite.c simpleboot.c \
255 virtex405-head.S virtex.c redboot-83xx.c cuboot-sam440ep.c \
256 cuboot-acadia.c cuboot-amigaone.c cuboot-kilauea.c
257 @@ -231,6 +231,7 @@ image-$(CONFIG_MPC834x_ITX) += cuImage.
258 image-$(CONFIG_MPC834x_MDS) += cuImage.mpc834x_mds
259 image-$(CONFIG_MPC836x_MDS) += cuImage.mpc836x_mds
260 image-$(CONFIG_ASP834x) += dtbImage.asp834x-redboot
261 +image-$(CONFIG_RB_PPC) += dtbImage.rb600
262
263 # Board ports in arch/powerpc/platform/85xx/Kconfig
264 image-$(CONFIG_MPC8540_ADS) += cuImage.mpc8540ads
265 --- /dev/null
266 +++ b/arch/powerpc/boot/rb600.c
267 @@ -0,0 +1,80 @@
268 +/*
269 + * The RouterBOARD platform -- for booting RB600(A) RouterBOARDs.
270 + *
271 + * Author: Michael Guntsche <mike@it-loops.com>
272 + *
273 + * Copyright (c) 2009 Michael Guntsche
274 + *
275 + * This program is free software; you can redistribute it and/or modify it
276 + * under the terms of the GNU General Public License version 2 as published
277 + * by the Free Software Foundation.
278 + */
279 +
280 +#include "ops.h"
281 +#include "types.h"
282 +#include "io.h"
283 +#include "stdio.h"
284 +#include <libfdt.h>
285 +
286 +BSS_STACK(4*1024);
287 +
288 +u64 memsize64;
289 +const void *fw_dtb;
290 +
291 +static void rb600_fixups(void)
292 +{
293 + const u32 *reg, *timebase, *clock;
294 + int node, size;
295 + void *chosen;
296 + const char* bootargs;
297 +
298 + dt_fixup_memory(0, memsize64);
299 +
300 + /* Set the MAC addresses. */
301 + node = fdt_path_offset(fw_dtb, "/soc8343@e0000000/ethernet@24000");
302 + reg = fdt_getprop(fw_dtb, node, "mac-address", &size);
303 + dt_fixup_mac_address_by_alias("ethernet1", (const u8 *)reg);
304 +
305 + node = fdt_path_offset(fw_dtb, "/soc8343@e0000000/ethernet@25000");
306 + reg = fdt_getprop(fw_dtb, node, "mac-address", &size);
307 + dt_fixup_mac_address_by_alias("ethernet0", (const u8 *)reg);
308 +
309 + /* Find the CPU timebase and clock frequencies. */
310 + node = fdt_node_offset_by_prop_value(fw_dtb, -1, "device_type", "cpu", sizeof("cpu"));
311 + timebase = fdt_getprop(fw_dtb, node, "timebase-frequency", &size);
312 + clock = fdt_getprop(fw_dtb, node, "clock-frequency", &size);
313 + dt_fixup_cpu_clocks(*clock, *timebase, 0);
314 +
315 + /* Fixup chosen
316 + * The bootloader reads the kernelparm segment and adds the content to
317 + * bootargs. This is needed to specify root and other boot flags.
318 + */
319 + chosen = finddevice("/chosen");
320 + node = fdt_path_offset(fw_dtb, "/chosen");
321 + bootargs = fdt_getprop(fw_dtb, node, "bootargs", &size);
322 + setprop_str(chosen, "bootargs", bootargs);
323 +}
324 +
325 +void platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
326 + unsigned long r6, unsigned long r7)
327 +{
328 + const u32 *reg;
329 + int node, size;
330 +
331 + fw_dtb = (const void *)r3;
332 +
333 + /* Find the memory range. */
334 + node = fdt_node_offset_by_prop_value(fw_dtb, -1, "device_type", "memory", sizeof("memory"));
335 + reg = fdt_getprop(fw_dtb, node, "reg", &size);
336 + memsize64 = reg[1];
337 +
338 + /* Now we have the memory size; initialize the heap. */
339 + simple_alloc_init(_end, memsize64 - (unsigned long)_end, 32, 64);
340 +
341 + /* Prepare the device tree and find the console. */
342 + fdt_init(_dtb_start);
343 + serial_console_init();
344 +
345 + /* Remaining fixups... */
346 + platform_ops.fixups = rb600_fixups;
347 +}
348 --- a/arch/powerpc/boot/wrapper
349 +++ b/arch/powerpc/boot/wrapper
350 @@ -202,7 +202,7 @@ ps3)
351 isection=.kernel:initrd
352 link_address=''
353 ;;
354 -ep88xc|ep405|ep8248e)
355 +ep88xc|ep405|ep8248e|rb600)
356 platformo="$object/fixed-head.o $object/$platform.o"
357 binary=y
358 ;;
359 --- a/arch/powerpc/kernel/Makefile
360 +++ b/arch/powerpc/kernel/Makefile
361 @@ -104,9 +104,11 @@ obj32-$(CONFIG_PPC_PERF_CTRS) += mpc7450
362
363 obj-$(CONFIG_8XX_MINIMAL_FPEMU) += softemu8xx.o
364
365 +ifneq ($(CONFIG_RB_IOMAP),y)
366 ifneq ($(CONFIG_PPC_INDIRECT_IO),y)
367 obj-y += iomap.o
368 endif
369 +endif
370
371 obj-$(CONFIG_PPC64) += $(obj64-y)
372 obj-$(CONFIG_PPC32) += $(obj32-y)
373 --- a/arch/powerpc/platforms/83xx/Kconfig
374 +++ b/arch/powerpc/platforms/83xx/Kconfig
375 @@ -30,6 +30,15 @@ config MPC832x_RDB
376 help
377 This option enables support for the MPC8323 RDB board.
378
379 +config RB_PPC
380 + bool "MikroTik RouterBOARD 600 series"
381 + select DEFAULT_UIMAGE
382 + select QUICC_ENGINE
383 + select PPC_MPC834x
384 + select RB_IOMAP
385 + help
386 + This option enables support for MikroTik RouterBOARD 600 series boards.
387 +
388 config MPC834x_MDS
389 bool "Freescale MPC834x MDS"
390 select DEFAULT_UIMAGE
391 --- a/arch/powerpc/platforms/83xx/Makefile
392 +++ b/arch/powerpc/platforms/83xx/Makefile
393 @@ -6,6 +6,7 @@ obj-$(CONFIG_SUSPEND) += suspend.o susp
394 obj-$(CONFIG_MCU_MPC8349EMITX) += mcu_mpc8349emitx.o
395 obj-$(CONFIG_MPC831x_RDB) += mpc831x_rdb.o
396 obj-$(CONFIG_MPC832x_RDB) += mpc832x_rdb.o
397 +obj-$(CONFIG_RB_PPC) += rbppc.o
398 obj-$(CONFIG_MPC834x_MDS) += mpc834x_mds.o
399 obj-$(CONFIG_MPC834x_ITX) += mpc834x_itx.o
400 obj-$(CONFIG_MPC836x_MDS) += mpc836x_mds.o
401 --- /dev/null
402 +++ b/arch/powerpc/platforms/83xx/rbppc.c
403 @@ -0,0 +1,316 @@
404 +/*
405 + * Copyright (C) 2008-2009 Noah Fontes <nfontes@transtruct.org>
406 + * Copyright (C) 2009 Michael Guntsche <mike@it-loops.com>
407 + * Copyright (C) Mikrotik 2007
408 + *
409 + * This program is free software; you can redistribute it and/or modify it
410 + * under the terms of the GNU General Public License as published by the
411 + * Free Software Foundation; either version 2 of the License, or (at your
412 + * option) any later version.
413 + */
414 +
415 +#include <linux/delay.h>
416 +#include <linux/root_dev.h>
417 +#include <linux/initrd.h>
418 +#include <linux/interrupt.h>
419 +#include <linux/of_platform.h>
420 +#include <linux/of_device.h>
421 +#include <linux/of_platform.h>
422 +#include <asm/time.h>
423 +#include <asm/ipic.h>
424 +#include <asm/udbg.h>
425 +#include <asm/qe.h>
426 +#include <asm/qe_ic.h>
427 +#include <sysdev/fsl_soc.h>
428 +#include <sysdev/fsl_pci.h>
429 +#include "mpc83xx.h"
430 +
431 +#define SYSCTL 0x100
432 +#define SICRL 0x014
433 +
434 +#define GTCFR2 0x04
435 +#define GTMDR4 0x22
436 +#define GTRFR4 0x26
437 +#define GTCNR4 0x2e
438 +#define GTVER4 0x36
439 +#define GTPSR4 0x3e
440 +
441 +#define GTCFR_BCM 0x40
442 +#define GTCFR_STP4 0x20
443 +#define GTCFR_RST4 0x10
444 +#define GTCFR_STP3 0x02
445 +#define GTCFR_RST3 0x01
446 +
447 +#define GTMDR_ORI 0x10
448 +#define GTMDR_FRR 0x08
449 +#define GTMDR_ICLK16 0x04
450 +
451 +extern int par_io_data_set(u8 port, u8 pin, u8 val);
452 +extern int par_io_config_pin(u8 port, u8 pin, int dir, int open_drain,
453 + int assignment, int has_irq);
454 +
455 +static unsigned timer_freq;
456 +static void *gtm;
457 +
458 +static int beeper_irq;
459 +static unsigned beeper_gpio_pin[2];
460 +
461 +irqreturn_t rbppc_timer_irq(int irq, void *ptr)
462 +{
463 + static int toggle = 0;
464 +
465 + par_io_data_set(beeper_gpio_pin[0], beeper_gpio_pin[1], toggle);
466 + toggle = !toggle;
467 +
468 + /* ack interrupt */
469 + out_be16(gtm + GTVER4, 3);
470 +
471 + return IRQ_HANDLED;
472 +}
473 +
474 +void rbppc_beep(unsigned freq)
475 +{
476 + unsigned gtmdr;
477 +
478 + if (freq > 5000) freq = 5000;
479 +
480 + if (!gtm)
481 + return;
482 + if (!freq) {
483 + out_8(gtm + GTCFR2, GTCFR_STP4 | GTCFR_STP3);
484 + return;
485 + }
486 +
487 + out_8(gtm + GTCFR2, GTCFR_RST4 | GTCFR_STP3);
488 + out_be16(gtm + GTPSR4, 255);
489 + gtmdr = GTMDR_FRR | GTMDR_ICLK16;
490 + if (beeper_irq != NO_IRQ) gtmdr |= GTMDR_ORI;
491 + out_be16(gtm + GTMDR4, gtmdr);
492 + out_be16(gtm + GTVER4, 3);
493 +
494 + out_be16(gtm + GTRFR4, timer_freq / 16 / 256 / freq / 2);
495 + out_be16(gtm + GTCNR4, 0);
496 +}
497 +EXPORT_SYMBOL(rbppc_beep);
498 +
499 +static void __init rbppc_setup_arch(void)
500 +{
501 + struct device_node *np;
502 +
503 + np = of_find_node_by_type(NULL, "cpu");
504 + if (np) {
505 + const unsigned *fp = of_get_property(np, "clock-frequency", NULL);
506 + loops_per_jiffy = fp ? *fp / HZ : 0;
507 +
508 + of_node_put(np);
509 + }
510 +
511 + np = of_find_node_by_name(NULL, "serial");
512 + if (np) {
513 + timer_freq =
514 + *(unsigned *) of_get_property(np, "clock-frequency", NULL);
515 + of_node_put(np);
516 + }
517 +
518 +#ifdef CONFIG_PCI
519 + np = of_find_node_by_type(NULL, "pci");
520 + if (np) {
521 + mpc83xx_add_bridge(np);
522 + }
523 +#endif
524 +
525 +#ifdef CONFIG_QUICC_ENGINE
526 + np = of_find_node_by_name(np, "par_io");
527 + if (np) {
528 + qe_reset();
529 + par_io_init(np);
530 + of_node_put(np);
531 +
532 + np = NULL;
533 + while (1) {
534 + np = of_find_node_by_name(np, "ucc");
535 + if (!np) break;
536 +
537 + par_io_of_config(np);
538 + }
539 + }
540 +#endif
541 +
542 +}
543 +
544 +void __init rbppc_init_IRQ(void)
545 +{
546 + struct device_node *np;
547 +
548 + np = of_find_node_by_type(NULL, "ipic");
549 + if (np) {
550 + ipic_init(np, 0);
551 + ipic_set_default_priority();
552 + of_node_put(np);
553 + }
554 +
555 +#ifdef CONFIG_QUICC_ENGINE
556 + np = of_find_node_by_type(NULL, "qeic");
557 + if (np) {
558 + qe_ic_init(np, 0, qe_ic_cascade_low_ipic, qe_ic_cascade_high_ipic);
559 + of_node_put(np);
560 + }
561 +#endif
562 +}
563 +
564 +static int __init rbppc_probe(void)
565 +{
566 + char *model;
567 +
568 + model = of_get_flat_dt_prop(of_get_flat_dt_root(), "model", NULL);
569 +
570 + if (!model)
571 + return 0;
572 +
573 + if (strcmp(model, "RB600") == 0)
574 + return 1;
575 +
576 + return 0;
577 +}
578 +
579 +static void __init rbppc_beeper_init(struct device_node *beeper)
580 +{
581 + struct resource res;
582 + struct device_node *gpio;
583 + const unsigned *pin;
584 + const unsigned *gpio_id;
585 +
586 + if (of_address_to_resource(beeper, 0, &res)) {
587 + printk(KERN_ERR "rbppc_beeper_init(%s): Beeper error: No region specified\n", beeper->full_name);
588 + return;
589 + }
590 +
591 + pin = of_get_property(beeper, "gpio", NULL);
592 + if (pin) {
593 + gpio = of_find_node_by_phandle(pin[0]);
594 +
595 + if (!gpio) {
596 + printk(KERN_ERR "rbppc_beeper_init(%s): Beeper error: GPIO handle %x not found\n", beeper->full_name, pin[0]);
597 + return;
598 + }
599 +
600 + gpio_id = of_get_property(gpio, "device-id", NULL);
601 + if (!gpio_id) {
602 + printk(KERN_ERR "rbppc_beeper_init(%s): Beeper error: No device-id specified in GPIO\n", beeper->full_name);
603 + return;
604 + }
605 +
606 + beeper_gpio_pin[0] = *gpio_id;
607 + beeper_gpio_pin[1] = pin[1];
608 +
609 + par_io_config_pin(*gpio_id, pin[1], 1, 0, 0, 0);
610 + } else {
611 + void *sysctl;
612 +
613 + sysctl = ioremap_nocache(get_immrbase() + SYSCTL, 0x100);
614 + out_be32(sysctl + SICRL,
615 + in_be32(sysctl + SICRL) | (1 << (31 - 19)));
616 + iounmap(sysctl);
617 + }
618 +
619 + gtm = ioremap_nocache(res.start, res.end - res.start + 1);
620 +
621 + beeper_irq = irq_of_parse_and_map(beeper, 0);
622 + if (beeper_irq != NO_IRQ) {
623 + int e = request_irq(beeper_irq, rbppc_timer_irq, 0, "beeper", NULL);
624 + if (e) {
625 + printk(KERN_ERR "rbppc_beeper_init(%s): Request of beeper irq failed!\n", beeper->full_name);
626 + }
627 + }
628 +}
629 +
630 +#define SBIT(x) (0x80000000 >> (x))
631 +#define DBIT(x, y) ((y) << (32 - (((x % 16) + 1) * 2)))
632 +
633 +#define SICRL_RB600(x) ((x) + (0x114 >> 2))
634 +#define GPIO_DIR_RB600(x) ((x) + (0xc00 >> 2))
635 +#define GPIO_DATA_RB600(x) ((x) + (0xc08 >> 2))
636 +
637 +static void rbppc_restart(char *cmd)
638 +{
639 + __be32 __iomem *reg;
640 +
641 + reg = ioremap(get_immrbase(), 0x1000);
642 + local_irq_disable();
643 + out_be32(SICRL_RB600(reg), in_be32(SICRL_RB600(reg)) & ~0x00800000);
644 + out_be32(GPIO_DIR_RB600(reg), in_be32(GPIO_DIR_RB600(reg)) | SBIT(2));
645 + out_be32(GPIO_DATA_RB600(reg), in_be32(GPIO_DATA_RB600(reg)) & ~SBIT(2));
646 +
647 + while (1);
648 +}
649 +
650 +static void rbppc_halt(void)
651 +{
652 + while (1);
653 +}
654 +
655 +static struct of_device_id rbppc_ids[] = {
656 + { .type = "soc", },
657 + { .compatible = "soc", },
658 + { .compatible = "simple-bus", },
659 + { .compatible = "gianfar", },
660 + { },
661 +};
662 +
663 +static int __init rbppc_declare_of_platform_devices(void)
664 +{
665 + struct device_node *np;
666 + unsigned idx;
667 +
668 + of_platform_bus_probe(NULL, rbppc_ids, NULL);
669 +
670 + np = of_find_node_by_type(NULL, "mdio");
671 + if (np) {
672 + unsigned len;
673 + unsigned *res;
674 + const unsigned *eres;
675 + struct device_node *ep;
676 +
677 + ep = of_find_compatible_node(NULL, "network", "ucc_geth");
678 + if (ep) {
679 + eres = of_get_property(ep, "reg", &len);
680 + res = (unsigned *) of_get_property(np, "reg", &len);
681 + if (res && eres) {
682 + res[0] = eres[0] + 0x120;
683 + }
684 + }
685 + }
686 +
687 + np = of_find_node_by_name(NULL, "nand");
688 + if (np) {
689 + of_platform_device_create(np, "nand", NULL);
690 + }
691 +
692 + idx = 0;
693 + for_each_node_by_type(np, "rb,cf") {
694 + char dev_name[12];
695 + snprintf(dev_name, sizeof(dev_name), "cf.%u", idx);
696 + of_platform_device_create(np, dev_name, NULL);
697 + ++idx;
698 + }
699 +
700 + np = of_find_node_by_name(NULL, "beeper");
701 + if (np) {
702 + rbppc_beeper_init(np);
703 + }
704 +
705 + return 0;
706 +}
707 +machine_device_initcall(rb600, rbppc_declare_of_platform_devices);
708 +
709 +define_machine(rb600) {
710 + .name = "MikroTik RouterBOARD 600 series",
711 + .probe = rbppc_probe,
712 + .setup_arch = rbppc_setup_arch,
713 + .init_IRQ = rbppc_init_IRQ,
714 + .get_irq = ipic_get_irq,
715 + .restart = rbppc_restart,
716 + .halt = rbppc_halt,
717 + .time_init = mpc83xx_time_init,
718 + .calibrate_decr = generic_calibrate_decr,
719 +};
720 --- a/arch/powerpc/platforms/Kconfig
721 +++ b/arch/powerpc/platforms/Kconfig
722 @@ -142,6 +142,10 @@ config GENERIC_IOMAP
723 bool
724 default n
725
726 +config RB_IOMAP
727 + bool
728 + default y if RB_PPC
729 +
730 source "drivers/cpufreq/Kconfig"
731
732 menu "CPU Frequency drivers"
733 --- a/arch/powerpc/sysdev/Makefile
734 +++ b/arch/powerpc/sysdev/Makefile
735 @@ -56,3 +56,5 @@ obj-$(CONFIG_PPC_MPC52xx) += mpc5xxx_clo
736 ifeq ($(CONFIG_SUSPEND),y)
737 obj-$(CONFIG_6xx) += 6xx-suspend.o
738 endif
739 +
740 +obj-$(CONFIG_RB_IOMAP) += rb_iomap.o
741 --- /dev/null
742 +++ b/arch/powerpc/sysdev/rb_iomap.c
743 @@ -0,0 +1,223 @@
744 +#include <linux/init.h>
745 +#include <linux/pci.h>
746 +#include <linux/mm.h>
747 +#include <asm/io.h>
748 +
749 +#define LOCALBUS_START 0x40000000
750 +#define LOCALBUS_MASK 0x007fffff
751 +#define LOCALBUS_REGMASK 0x001fffff
752 +
753 +static void __iomem *localbus_base;
754 +
755 +static inline int is_localbus(void __iomem *addr)
756 +{
757 + return ((unsigned) addr & ~LOCALBUS_MASK) == LOCALBUS_START;
758 +}
759 +
760 +static inline unsigned localbus_regoff(unsigned reg) {
761 + return (reg << 16) | (((reg ^ 8) & 8) << 17);
762 +}
763 +
764 +static inline void __iomem *localbus_addr(void __iomem *addr)
765 +{
766 + return localbus_base
767 + + ((unsigned) addr & LOCALBUS_MASK & ~LOCALBUS_REGMASK)
768 + + localbus_regoff((unsigned) addr & LOCALBUS_REGMASK);
769 +}
770 +
771 +unsigned int ioread8(void __iomem *addr)
772 +{
773 + if (is_localbus(addr))
774 + return in_be16(localbus_addr(addr)) >> 8;
775 + return readb(addr);
776 +}
777 +EXPORT_SYMBOL(ioread8);
778 +
779 +unsigned int ioread16(void __iomem *addr)
780 +{
781 + if (is_localbus(addr))
782 + return le16_to_cpu(in_be16(localbus_addr(addr)));
783 + return readw(addr);
784 +}
785 +EXPORT_SYMBOL(ioread16);
786 +
787 +unsigned int ioread16be(void __iomem *addr)
788 +{
789 + return in_be16(addr);
790 +}
791 +EXPORT_SYMBOL(ioread16be);
792 +
793 +unsigned int ioread32(void __iomem *addr)
794 +{
795 + return readl(addr);
796 +}
797 +EXPORT_SYMBOL(ioread32);
798 +
799 +unsigned int ioread32be(void __iomem *addr)
800 +{
801 + return in_be32(addr);
802 +}
803 +EXPORT_SYMBOL(ioread32be);
804 +
805 +void iowrite8(u8 val, void __iomem *addr)
806 +{
807 + if (is_localbus(addr))
808 + out_be16(localbus_addr(addr), ((u16) val) << 8);
809 + else
810 + writeb(val, addr);
811 +}
812 +EXPORT_SYMBOL(iowrite8);
813 +
814 +void iowrite16(u16 val, void __iomem *addr)
815 +{
816 + if (is_localbus(addr))
817 + out_be16(localbus_addr(addr), cpu_to_le16(val));
818 + else
819 + writew(val, addr);
820 +}
821 +EXPORT_SYMBOL(iowrite16);
822 +
823 +void iowrite16be(u16 val, void __iomem *addr)
824 +{
825 + out_be16(addr, val);
826 +}
827 +EXPORT_SYMBOL(iowrite16be);
828 +
829 +void iowrite32(u32 val, void __iomem *addr)
830 +{
831 + writel(val, addr);
832 +}
833 +EXPORT_SYMBOL(iowrite32);
834 +
835 +void iowrite32be(u32 val, void __iomem *addr)
836 +{
837 + out_be32(addr, val);
838 +}
839 +EXPORT_SYMBOL(iowrite32be);
840 +
841 +void ioread8_rep(void __iomem *addr, void *dst, unsigned long count)
842 +{
843 + if (is_localbus(addr)) {
844 + unsigned i;
845 + void *laddr = localbus_addr(addr);
846 + u8 *buf = dst;
847 +
848 + for (i = 0; i < count; ++i) {
849 + *buf++ = in_be16(laddr) >> 8;
850 + }
851 + } else {
852 + _insb((u8 __iomem *) addr, dst, count);
853 + }
854 +}
855 +EXPORT_SYMBOL(ioread8_rep);
856 +
857 +void ioread16_rep(void __iomem *addr, void *dst, unsigned long count)
858 +{
859 + if (is_localbus(addr)) {
860 + unsigned i;
861 + void *laddr = localbus_addr(addr);
862 + u16 *buf = dst;
863 +
864 + for (i = 0; i < count; ++i) {
865 + *buf++ = in_be16(laddr);
866 + }
867 + } else {
868 + _insw_ns((u16 __iomem *) addr, dst, count);
869 + }
870 +}
871 +EXPORT_SYMBOL(ioread16_rep);
872 +
873 +void ioread32_rep(void __iomem *addr, void *dst, unsigned long count)
874 +{
875 + _insl_ns((u32 __iomem *) addr, dst, count);
876 +}
877 +EXPORT_SYMBOL(ioread32_rep);
878 +
879 +void iowrite8_rep(void __iomem *addr, const void *src, unsigned long count)
880 +{
881 + if (is_localbus(addr)) {
882 + unsigned i;
883 + void *laddr = localbus_addr(addr);
884 + const u8 *buf = src;
885 +
886 + for (i = 0; i < count; ++i) {
887 + out_be16(laddr, ((u16) *buf++) << 8);
888 + }
889 + } else {
890 + _outsb((u8 __iomem *) addr, src, count);
891 + }
892 +}
893 +EXPORT_SYMBOL(iowrite8_rep);
894 +
895 +void iowrite16_rep(void __iomem *addr, const void *src, unsigned long count)
896 +{
897 + if (is_localbus(addr)) {
898 + unsigned i;
899 + void *laddr = localbus_addr(addr);
900 + const u16 *buf = src;
901 +
902 + for (i = 0; i < count; ++i) {
903 + out_be16(laddr, *buf++);
904 + }
905 + } else {
906 + _outsw_ns((u16 __iomem *) addr, src, count);
907 + }
908 +}
909 +EXPORT_SYMBOL(iowrite16_rep);
910 +
911 +void iowrite32_rep(void __iomem *addr, const void *src, unsigned long count)
912 +{
913 + _outsl_ns((u32 __iomem *) addr, src, count);
914 +}
915 +EXPORT_SYMBOL(iowrite32_rep);
916 +
917 +void __iomem *ioport_map(unsigned long port, unsigned int len)
918 +{
919 + return (void __iomem *) (port + _IO_BASE);
920 +}
921 +EXPORT_SYMBOL(ioport_unmap);
922 +
923 +void ioport_unmap(void __iomem *addr)
924 +{
925 + /* Nothing to do */
926 +}
927 +EXPORT_SYMBOL(ioport_map);
928 +
929 +void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max)
930 +{
931 + unsigned long start = pci_resource_start(dev, bar);
932 + unsigned long len = pci_resource_len(dev, bar);
933 + unsigned long flags = pci_resource_flags(dev, bar);
934 +
935 + if (!len)
936 + return NULL;
937 + if (max && len > max)
938 + len = max;
939 + if (flags & IORESOURCE_IO)
940 + return ioport_map(start, len);
941 + if (flags & IORESOURCE_MEM)
942 + return ioremap(start, len);
943 + /* What? */
944 + return NULL;
945 +}
946 +EXPORT_SYMBOL(pci_iomap);
947 +
948 +void pci_iounmap(struct pci_dev *dev, void __iomem *addr)
949 +{
950 + /* Nothing to do */
951 +}
952 +EXPORT_SYMBOL(pci_iounmap);
953 +
954 +void __iomem *localbus_map(unsigned long addr, unsigned int len)
955 +{
956 + if (!localbus_base)
957 + localbus_base = ioremap(addr & ~LOCALBUS_MASK,
958 + LOCALBUS_MASK + 1);
959 + return (void *) (LOCALBUS_START + (addr & LOCALBUS_MASK));
960 +}
961 +EXPORT_SYMBOL(localbus_map);
962 +
963 +void localbus_unmap(void __iomem *addr)
964 +{
965 +}
966 +EXPORT_SYMBOL(localbus_unmap);
967 --- a/drivers/ata/Kconfig
968 +++ b/drivers/ata/Kconfig
969 @@ -781,5 +781,12 @@ config PATA_BF54X
970
971 If unsure, say N.
972
973 +config PATA_RB_PPC
974 + tristate "MikroTik RB600 PATA support"
975 + depends on RB_PPC
976 + help
977 + This option enables support for PATA devices on MikroTik RouterBOARD
978 + 600 series boards.
979 +
980 endif # ATA_SFF
981 endif # ATA
982 --- a/drivers/ata/Makefile
983 +++ b/drivers/ata/Makefile
984 @@ -77,6 +77,7 @@ obj-$(CONFIG_PATA_PLATFORM) += pata_plat
985 obj-$(CONFIG_PATA_AT91) += pata_at91.o
986 obj-$(CONFIG_PATA_OF_PLATFORM) += pata_of_platform.o
987 obj-$(CONFIG_PATA_ICSIDE) += pata_icside.o
988 +obj-$(CONFIG_PATA_RB_PPC) += pata_rbppc_cf.o
989 # Should be last but two libata driver
990 obj-$(CONFIG_PATA_ACPI) += pata_acpi.o
991 # Should be last but one libata driver
992 --- /dev/null
993 +++ b/drivers/ata/pata_rbppc_cf.c
994 @@ -0,0 +1,701 @@
995 +/*
996 + * Copyright (C) 2008-2009 Noah Fontes <nfontes@transtruct.org>
997 + * Copyright (C) Mikrotik 2007
998 + *
999 + * This program is free software; you can redistribute it and/or modify it
1000 + * under the terms of the GNU General Public License as published by the
1001 + * Free Software Foundation; either version 2 of the License, or (at your
1002 + * option) any later version.
1003 + */
1004 +
1005 +#include <linux/kernel.h>
1006 +#include <linux/module.h>
1007 +#include <linux/init.h>
1008 +#include <scsi/scsi_host.h>
1009 +#include <linux/libata.h>
1010 +#include <linux/of_platform.h>
1011 +#include <linux/ata_platform.h>
1012 +
1013 +#define DEBUG_UPM 0
1014 +
1015 +#define DRV_NAME "pata_rbppc_cf"
1016 +#define DRV_VERSION "0.0.2"
1017 +
1018 +#define DEV2SEL_OFFSET 0x00100000
1019 +
1020 +#define IMMR_LBCFG_OFFSET 0x00005000
1021 +#define IMMR_LBCFG_SIZE 0x00001000
1022 +
1023 +#define LOCAL_BUS_MCMR 0x00000078
1024 +#define MxMR_OP_MASK 0x30000000
1025 +#define MxMR_OP_NORMAL 0x00000000
1026 +#define MxMR_OP_WRITE 0x10000000
1027 +#define MxMR_OP_READ 0x20000000
1028 +#define MxMR_OP_RUN 0x30000000
1029 +#define MxMR_LUPWAIT_LOW 0x08000000
1030 +#define MxMR_LUPWAIT_HIGH 0x00000000
1031 +#define MxMR_LUPWAIT_ENABLE 0x00040000
1032 +#define MxMR_RLF_MASK 0x0003c000
1033 +#define MxMR_RLF_SHIFT 14
1034 +#define MxMR_WLF_MASK 0x00003c00
1035 +#define MxMR_WLF_SHIFT 10
1036 +#define MxMR_MAD_MASK 0x0000003f
1037 +#define LOCAL_BUS_MDR 0x00000088
1038 +#define LOCAL_BUS_LCRR 0x000000D4
1039 +#define LCRR_CLKDIV_MASK 0x0000000f
1040 +
1041 +#define LOOP_SIZE 4
1042 +
1043 +#define UPM_READ_SINGLE_OFFSET 0x00
1044 +#define UPM_WRITE_SINGLE_OFFSET 0x18
1045 +#define UPM_DATA_SIZE 0x40
1046 +
1047 +#define LBT_CPUIN_MIN 0
1048 +#define LBT_CPUOUT_MIN 1
1049 +#define LBT_CPUOUT_MAX 2
1050 +#define LBT_EXTDEL_MIN 3
1051 +#define LBT_EXTDEL_MAX 4
1052 +#define LBT_SIZE 5
1053 +
1054 +/* UPM machine configuration bits */
1055 +#define N_BASE 0x00f00000
1056 +#define N_CS 0xf0000000
1057 +#define N_CS_H1 0xc0000000
1058 +#define N_CS_H2 0x30000000
1059 +#define N_WE 0x0f000000
1060 +#define N_WE_H1 0x0c000000
1061 +#define N_WE_H2 0x03000000
1062 +#define N_OE 0x00030000
1063 +#define N_OE_H1 0x00020000
1064 +#define N_OE_H2 0x00010000
1065 +#define WAEN 0x00001000
1066 +#define REDO_2 0x00000100
1067 +#define REDO_3 0x00000200
1068 +#define REDO_4 0x00000300
1069 +#define LOOP 0x00000080
1070 +#define NA 0x00000008
1071 +#define UTA 0x00000004
1072 +#define LAST 0x00000001
1073 +
1074 +#define REDO_VAL(mult) (REDO_2 * ((mult) - 1))
1075 +#define REDO_MAX_MULT 4
1076 +
1077 +#define READ_BASE (N_BASE | N_WE)
1078 +#define WRITE_BASE (N_BASE | N_OE)
1079 +#define EMPTY (N_BASE | N_CS | N_OE | N_WE | LAST)
1080 +
1081 +#define EOF_UPM_SETTINGS 0
1082 +#define ANOTHER_TIMING 1
1083 +
1084 +#define OA_CPUIN_MIN 0x01
1085 +#define OA_CPUOUT_MAX 0x02
1086 +#define OD_CPUOUT_MIN 0x04
1087 +#define OA_CPUOUT_DELTA 0x06
1088 +#define OA_EXTDEL_MAX 0x08
1089 +#define OD_EXTDEL_MIN 0x10
1090 +#define OA_EXTDEL_DELTA 0x18
1091 +#define O_MIN_CYCLE_TIME 0x20
1092 +#define O_MINUS_PREV 0x40
1093 +#define O_HALF_CYCLE 0x80
1094 +
1095 +extern void __iomem *localbus_map(unsigned long addr, unsigned int len);
1096 +extern void localbus_unmap(void __iomem *addr);
1097 +
1098 +struct rbppc_cf_info {
1099 + unsigned lbcfg_addr;
1100 + unsigned clk_time_ps;
1101 + int cur_mode;
1102 + u32 lb_timings[LBT_SIZE];
1103 +};
1104 +static struct rbppc_cf_info *rbinfo = NULL;
1105 +
1106 +struct upm_setting {
1107 + unsigned value;
1108 + unsigned ns[7];
1109 + unsigned clk_minus;
1110 + unsigned group_size;
1111 + unsigned options;
1112 +};
1113 +
1114 +static const struct upm_setting cfUpmReadSingle[] = {
1115 + { READ_BASE | N_OE,
1116 + /* t1 - ADDR setup time */
1117 + { 70, 50, 30, 30, 25, 15, 10 }, 0, 0, (OA_CPUOUT_DELTA |
1118 + OA_EXTDEL_MAX) },
1119 + { READ_BASE | N_OE_H1,
1120 + { 0, 0, 0, 0, 0, 0, 0 }, 0, 0, O_HALF_CYCLE },
1121 + { READ_BASE,
1122 + /* t2 - OE0 time */
1123 + { 290, 290, 290, 80, 70, 65, 55 }, 0, 2, (OA_CPUOUT_MAX |
1124 + OA_CPUIN_MIN) },
1125 + { READ_BASE | WAEN,
1126 + { 1, 1, 1, 1, 1, 0, 0 }, 0, 0, 0 },
1127 + { READ_BASE | UTA,
1128 + { 1, 1, 1, 1, 1, 1, 1 }, 0, 0, 0 },
1129 + { READ_BASE | N_OE,
1130 + /* t9 - ADDR hold time */
1131 + { 20, 15, 10, 10, 10, 10, 10 }, 0, 0, (OA_CPUOUT_DELTA |
1132 + OD_EXTDEL_MIN) },
1133 + { READ_BASE | N_OE | N_CS_H2,
1134 + { 0, 0, 0, 0, 0, 0, 0 }, 0, 0, O_HALF_CYCLE },
1135 + { READ_BASE | N_OE | N_CS,
1136 + /* t6Z -IORD data tristate */
1137 + { 30, 30, 30, 30, 30, 20, 20 }, 1, 1, O_MINUS_PREV },
1138 + { ANOTHER_TIMING,
1139 + /* t2i -IORD recovery time */
1140 + { 0, 0, 0, 70, 25, 25, 20 }, 2, 0, 0 },
1141 + { ANOTHER_TIMING,
1142 + /* CS 0 -> 1 MAX */
1143 + { 0, 0, 0, 0, 0, 0, 0 }, 1, 0, (OA_CPUOUT_DELTA |
1144 + OA_EXTDEL_MAX) },
1145 + { READ_BASE | N_OE | N_CS | LAST,
1146 + { 1, 1, 1, 1, 1, 1, 1 }, 0, 0, 0 },
1147 + { EOF_UPM_SETTINGS,
1148 + /* min total cycle time - includes turnaround and ALE cycle */
1149 + { 600, 383, 240, 180, 120, 100, 80 }, 2, 0, O_MIN_CYCLE_TIME },
1150 +};
1151 +
1152 +static const struct upm_setting cfUpmWriteSingle[] = {
1153 + { WRITE_BASE | N_WE,
1154 + /* t1 - ADDR setup time */
1155 + { 70, 50, 30, 30, 25, 15, 10 }, 0, 0, (OA_CPUOUT_DELTA |
1156 + OA_EXTDEL_MAX) },
1157 + { WRITE_BASE | N_WE_H1,
1158 + { 0, 0, 0, 0, 0, 0, 0 }, 0, 0, O_HALF_CYCLE },
1159 + { WRITE_BASE,
1160 + /* t2 - WE0 time */
1161 + { 290, 290, 290, 80, 70, 65, 55 }, 0, 1, OA_CPUOUT_DELTA },
1162 + { WRITE_BASE | WAEN,
1163 + { 1, 1, 1, 1, 1, 0, 0 }, 0, 0, 0 },
1164 + { WRITE_BASE | N_WE,
1165 + /* t9 - ADDR hold time */
1166 + { 20, 15, 10, 10, 10, 10, 10 }, 0, 0, (OA_CPUOUT_DELTA |
1167 + OD_EXTDEL_MIN) },
1168 + { WRITE_BASE | N_WE | N_CS_H2,
1169 + { 0, 0, 0, 0, 0, 0, 0 }, 0, 0, O_HALF_CYCLE },
1170 + { WRITE_BASE | N_WE | N_CS,
1171 + /* t4 - DATA hold time */
1172 + { 30, 20, 15, 10, 10, 10, 10 }, 0, 1, O_MINUS_PREV },
1173 + { ANOTHER_TIMING,
1174 + /* t2i -IOWR recovery time */
1175 + { 0, 0, 0, 70, 25, 25, 20 }, 1, 0, 0 },
1176 + { ANOTHER_TIMING,
1177 + /* CS 0 -> 1 MAX */
1178 + { 0, 0, 0, 0, 0, 0, 0 }, 0, 0, (OA_CPUOUT_DELTA |
1179 + OA_EXTDEL_MAX) },
1180 + { WRITE_BASE | N_WE | N_CS | UTA | LAST,
1181 + { 1, 1, 1, 1, 1, 1, 1 }, 0, 0, 0 },
1182 + /* min total cycle time - includes ALE cycle */
1183 + { EOF_UPM_SETTINGS,
1184 + { 600, 383, 240, 180, 120, 100, 80 }, 1, 0, O_MIN_CYCLE_TIME },
1185 +};
1186 +
1187 +static u8 rbppc_cf_check_status(struct ata_port *ap) {
1188 + u8 val = ioread8(ap->ioaddr.status_addr);
1189 + if (val == 0xF9)
1190 + val = 0x7F;
1191 + return val;
1192 +}
1193 +
1194 +static u8 rbppc_cf_check_altstatus(struct ata_port *ap) {
1195 + u8 val = ioread8(ap->ioaddr.altstatus_addr);
1196 + if (val == 0xF9)
1197 + val = 0x7F;
1198 + return val;
1199 +}
1200 +
1201 +static void rbppc_cf_dummy_noret(struct ata_port *ap) { }
1202 +static int rbppc_cf_dummy_ret0(struct ata_port *ap) { return 0; }
1203 +
1204 +static int ps2clk(int ps, unsigned clk_time_ps) {
1205 + int psMaxOver;
1206 + if (ps <= 0) return 0;
1207 +
1208 + /* round down if <= 2% over clk border, but no more than 1/4 clk cycle */
1209 + psMaxOver = ps * 2 / 100;
1210 + if (4 * psMaxOver > clk_time_ps) {
1211 + psMaxOver = clk_time_ps / 4;
1212 + }
1213 + return (ps + clk_time_ps - 1 - psMaxOver) / clk_time_ps;
1214 +}
1215 +
1216 +static int upm_gen_ps_table(const struct upm_setting *upm,
1217 + int mode, struct rbppc_cf_info *info,
1218 + int *psFinal) {
1219 + int uidx;
1220 + int lastUpmValIdx = 0;
1221 + int group_start_idx = -1;
1222 + int group_left_num = -1;
1223 + int clk_time_ps = info->clk_time_ps;
1224 +
1225 + for (uidx = 0; upm[uidx].value != EOF_UPM_SETTINGS; ++uidx) {
1226 + const struct upm_setting *us = upm + uidx;
1227 + unsigned opt = us->options;
1228 + int ps = us->ns[mode] * 1000 - us->clk_minus * clk_time_ps;
1229 +
1230 + if (opt & OA_CPUIN_MIN) ps += info->lb_timings[LBT_CPUIN_MIN];
1231 + if (opt & OD_CPUOUT_MIN) ps -= info->lb_timings[LBT_CPUOUT_MIN];
1232 + if (opt & OA_CPUOUT_MAX) ps += info->lb_timings[LBT_CPUOUT_MAX];
1233 + if (opt & OD_EXTDEL_MIN) ps -= info->lb_timings[LBT_EXTDEL_MIN];
1234 + if (opt & OA_EXTDEL_MAX) ps += info->lb_timings[LBT_EXTDEL_MAX];
1235 +
1236 + if (us->value == ANOTHER_TIMING) {
1237 + /* use longest timing from alternatives */
1238 + if (psFinal[lastUpmValIdx] < ps) {
1239 + psFinal[lastUpmValIdx] = ps;
1240 + }
1241 + ps = 0;
1242 + }
1243 + else {
1244 + if (us->group_size) {
1245 + group_start_idx = uidx;
1246 + group_left_num = us->group_size;
1247 + }
1248 + else if (group_left_num > 0) {
1249 + /* group time is divided on all group members */
1250 + int clk = ps2clk(ps, clk_time_ps);
1251 + psFinal[group_start_idx] -= clk * clk_time_ps;
1252 + --group_left_num;
1253 + }
1254 + if ((opt & O_MINUS_PREV) && lastUpmValIdx > 0) {
1255 + int clk = ps2clk(psFinal[lastUpmValIdx],
1256 + clk_time_ps);
1257 + ps -= clk * clk_time_ps;
1258 + }
1259 + lastUpmValIdx = uidx;
1260 + }
1261 + psFinal[uidx] = ps;
1262 + }
1263 + return uidx;
1264 +}
1265 +
1266 +static int free_half(int ps, int clk, int clk_time_ps) {
1267 + if (clk < 2) return 0;
1268 + return (clk * clk_time_ps - ps) * 2 >= clk_time_ps;
1269 +}
1270 +
1271 +static void upm_gen_clk_table(const struct upm_setting *upm,
1272 + int mode, int clk_time_ps,
1273 + int max_uidx, const int *psFinal, int *clkFinal) {
1274 + int clk_cycle_time;
1275 + int clk_total;
1276 + int uidx;
1277 +
1278 + /* convert picoseconds to clocks */
1279 + clk_total = 0;
1280 + for (uidx = 0; uidx < max_uidx; ++uidx) {
1281 + int clk = ps2clk(psFinal[uidx], clk_time_ps);
1282 + clkFinal[uidx] = clk;
1283 + clk_total += clk;
1284 + }
1285 +
1286 + /* check possibility of half cycle usage */
1287 + for (uidx = 1; uidx < max_uidx - 1; ++uidx) {
1288 + if ((upm[uidx].options & O_HALF_CYCLE) &&
1289 + free_half(psFinal[uidx - 1], clkFinal[uidx - 1],
1290 + clk_time_ps) &&
1291 + free_half(psFinal[uidx + 1], clkFinal[uidx + 1],
1292 + clk_time_ps)) {
1293 + ++clkFinal[uidx];
1294 + --clkFinal[uidx - 1];
1295 + --clkFinal[uidx + 1];
1296 + }
1297 + }
1298 +
1299 + if ((upm[max_uidx].options & O_MIN_CYCLE_TIME) == 0) return;
1300 +
1301 + /* check cycle time, adjust timings if needed */
1302 + clk_cycle_time = (ps2clk(upm[max_uidx].ns[mode] * 1000, clk_time_ps) -
1303 + upm[max_uidx].clk_minus);
1304 + uidx = 0;
1305 + while (clk_total < clk_cycle_time) {
1306 + /* extend all timings in round-robin to match cycle time */
1307 + if (clkFinal[uidx]) {
1308 +#if DEBUG_UPM
1309 + printk(KERN_INFO "extending %u by 1 clk\n", uidx);
1310 +#endif
1311 + ++clkFinal[uidx];
1312 + ++clk_total;
1313 + }
1314 + ++uidx;
1315 + if (uidx == max_uidx) uidx = 0;
1316 + }
1317 +}
1318 +
1319 +static void add_data_val(unsigned val, int *clkLeft, int maxClk,
1320 + unsigned *data, int *dataIdx) {
1321 + if (*clkLeft == 0) return;
1322 +
1323 + if (maxClk == 0 && *clkLeft >= LOOP_SIZE * 2) {
1324 + int times;
1325 + int times1;
1326 + int times2;
1327 +
1328 + times = *clkLeft / LOOP_SIZE;
1329 + if (times > REDO_MAX_MULT * 2) times = REDO_MAX_MULT * 2;
1330 + times1 = times / 2;
1331 + times2 = times - times1;
1332 +
1333 + val |= LOOP;
1334 + data[*dataIdx] = val | REDO_VAL(times1);
1335 + ++(*dataIdx);
1336 + data[*dataIdx] = val | REDO_VAL(times2);
1337 + ++(*dataIdx);
1338 +
1339 + *clkLeft -= times * LOOP_SIZE;
1340 + return;
1341 + }
1342 +
1343 + if (maxClk < 1 || maxClk > REDO_MAX_MULT) maxClk = REDO_MAX_MULT;
1344 + if (*clkLeft < maxClk) maxClk = *clkLeft;
1345 +
1346 + *clkLeft -= maxClk;
1347 + val |= REDO_VAL(maxClk);
1348 +
1349 + data[*dataIdx] = val;
1350 + ++(*dataIdx);
1351 +}
1352 +
1353 +static int upm_gen_final_data(const struct upm_setting *upm,
1354 + int max_uidx, int *clkFinal, unsigned *data) {
1355 + int dataIdx;
1356 + int uidx;
1357 +
1358 + dataIdx = 0;
1359 + for (uidx = 0; uidx < max_uidx; ++uidx) {
1360 + int clk = clkFinal[uidx];
1361 + while (clk > 0) {
1362 + add_data_val(upm[uidx].value, &clk, 0,
1363 + data, &dataIdx);
1364 + }
1365 + }
1366 + return dataIdx;
1367 +}
1368 +
1369 +static int conv_upm_table(const struct upm_setting *upm,
1370 + int mode, struct rbppc_cf_info *info,
1371 + unsigned *data) {
1372 +#if DEBUG_UPM
1373 + int uidx;
1374 +#endif
1375 + int psFinal[32];
1376 + int clkFinal[32];
1377 + int max_uidx;
1378 + int data_len;
1379 +
1380 + max_uidx = upm_gen_ps_table(upm, mode, info, psFinal);
1381 +
1382 + upm_gen_clk_table(upm, mode, info->clk_time_ps, max_uidx,
1383 + psFinal, clkFinal);
1384 +
1385 +#if DEBUG_UPM
1386 + /* dump out debug info */
1387 + for (uidx = 0; uidx < max_uidx; ++uidx) {
1388 + if (clkFinal[uidx]) {
1389 + printk(KERN_INFO "idx %d val %08x clk %d ps %d\n",
1390 + uidx, upm[uidx].value,
1391 + clkFinal[uidx], psFinal[uidx]);
1392 + }
1393 + }
1394 +#endif
1395 +
1396 + data_len = upm_gen_final_data(upm, max_uidx, clkFinal, data);
1397 +
1398 +#if DEBUG_UPM
1399 + for (uidx = 0; uidx < data_len; ++uidx) {
1400 + printk(KERN_INFO "cf UPM x result: idx %d val %08x\n",
1401 + uidx, data[uidx]);
1402 + }
1403 +#endif
1404 + return 0;
1405 +}
1406 +
1407 +static int gen_upm_data(int mode, struct rbppc_cf_info *info, unsigned *data) {
1408 + int i;
1409 +
1410 + for (i = 0; i < UPM_DATA_SIZE; ++i) {
1411 + data[i] = EMPTY;
1412 + }
1413 +
1414 + if (conv_upm_table(cfUpmReadSingle, mode, info, data + UPM_READ_SINGLE_OFFSET)) {
1415 + return -1;
1416 + }
1417 + if (conv_upm_table(cfUpmWriteSingle, mode, info, data + UPM_WRITE_SINGLE_OFFSET)) {
1418 + return -1;
1419 + }
1420 + return 0;
1421 +}
1422 +
1423 +static void rbppc_cf_program_upm(void *upmMemAddr, volatile void *lbcfg_mxmr, volatile void *lbcfg_mdr, const unsigned *upmData, unsigned offset, unsigned len) {
1424 + unsigned i;
1425 + unsigned mxmr;
1426 +
1427 + mxmr = in_be32(lbcfg_mxmr);
1428 + mxmr &= ~(MxMR_OP_MASK | MxMR_MAD_MASK);
1429 + mxmr |= (MxMR_OP_WRITE | offset);
1430 + out_be32(lbcfg_mxmr, mxmr);
1431 + in_be32(lbcfg_mxmr); /* flush MxMR write */
1432 +
1433 + for (i = 0; i < len; ++i) {
1434 + int to;
1435 + unsigned data = upmData[i + offset];
1436 + out_be32(lbcfg_mdr, data);
1437 + in_be32(lbcfg_mdr); /* flush MDR write */
1438 +
1439 + iowrite8(1, upmMemAddr); /* dummy write to any CF addr */
1440 +
1441 + /* wait for dummy write to complete */
1442 + for (to = 10000; to >= 0; --to) {
1443 + mxmr = in_be32(lbcfg_mxmr);
1444 + if (((mxmr ^ (i + 1)) & MxMR_MAD_MASK) == 0) {
1445 + break;
1446 + }
1447 + if (to == 0) {
1448 + printk(KERN_ERR "rbppc_cf_program_upm: UPMx program error at 0x%x: Timeout\n", i);
1449 + }
1450 + }
1451 + }
1452 + mxmr &= ~(MxMR_OP_MASK | MxMR_RLF_MASK | MxMR_WLF_MASK);
1453 + mxmr |= (MxMR_OP_NORMAL | (LOOP_SIZE << MxMR_RLF_SHIFT) | (LOOP_SIZE << MxMR_WLF_SHIFT));
1454 + out_be32(lbcfg_mxmr, mxmr);
1455 +}
1456 +
1457 +static int rbppc_cf_update_piomode(struct ata_port *ap, int mode) {
1458 + struct rbppc_cf_info *info = (struct rbppc_cf_info *)ap->host->private_data;
1459 + void *lbcfgBase;
1460 + unsigned upmData[UPM_DATA_SIZE];
1461 +
1462 + if (gen_upm_data(mode, info, upmData)) {
1463 + return -1;
1464 + }
1465 +
1466 + lbcfgBase = ioremap_nocache(info->lbcfg_addr, IMMR_LBCFG_SIZE);
1467 +
1468 + rbppc_cf_program_upm(ap->ioaddr.cmd_addr, ((char *)lbcfgBase) + LOCAL_BUS_MCMR, ((char *)lbcfgBase) + LOCAL_BUS_MDR, upmData, 0, UPM_DATA_SIZE);
1469 + iounmap(lbcfgBase);
1470 + return 0;
1471 +}
1472 +
1473 +static void rbppc_cf_set_piomode(struct ata_port *ap, struct ata_device *adev)
1474 +{
1475 + struct rbppc_cf_info *info = (struct rbppc_cf_info *)ap->host->private_data;
1476 + int mode = adev->pio_mode - XFER_PIO_0;
1477 +
1478 + DPRINTK("rbppc_cf_set_piomode: PIO %d\n", mode);
1479 + if (mode < 0) mode = 0;
1480 + if (mode > 6) mode = 6;
1481 +
1482 + if (info->cur_mode < 0 || info->cur_mode > mode) {
1483 + if (rbppc_cf_update_piomode(ap, mode) == 0) {
1484 + printk(KERN_INFO "rbppc_cf_set_piomode: PIO mode changed to %d\n", mode);
1485 + info->cur_mode = mode;
1486 + }
1487 + }
1488 +}
1489 +
1490 +static struct scsi_host_template rbppc_cf_sht = {
1491 + ATA_BASE_SHT(DRV_NAME),
1492 +};
1493 +
1494 +static struct ata_port_operations rbppc_cf_port_ops = {
1495 + .inherits = &ata_bmdma_port_ops,
1496 +
1497 + .sff_check_status = rbppc_cf_check_status,
1498 + .sff_check_altstatus = rbppc_cf_check_altstatus,
1499 +
1500 + .set_piomode = rbppc_cf_set_piomode,
1501 +
1502 + .port_start = rbppc_cf_dummy_ret0,
1503 +
1504 + .sff_irq_clear = rbppc_cf_dummy_noret,
1505 +};
1506 +
1507 +static int rbppc_cf_init_info(struct of_device *pdev, struct rbppc_cf_info *info) {
1508 + struct device_node *np;
1509 + struct resource res;
1510 + const u32 *u32ptr;
1511 + void *lbcfgBase;
1512 + void *lbcfg_lcrr;
1513 + unsigned lbc_clk_khz;
1514 + unsigned lbc_extra_divider = 1;
1515 + unsigned ccb_freq_hz;
1516 + unsigned lb_div;
1517 +
1518 + u32ptr = of_get_property(pdev->node, "lbc_extra_divider", NULL);
1519 + if (u32ptr && *u32ptr) {
1520 + lbc_extra_divider = *u32ptr;
1521 +#if DEBUG_UPM
1522 + printk(KERN_INFO "rbppc_cf_init_info: LBC extra divider %u\n",
1523 + lbc_extra_divider);
1524 +#endif
1525 + }
1526 +
1527 + np = of_find_node_by_type(NULL, "serial");
1528 + if (!np) {
1529 + printk(KERN_ERR "rbppc_cf_init_info: No serial node found\n");
1530 + return -1;
1531 + }
1532 + u32ptr = of_get_property(np, "clock-frequency", NULL);
1533 + if (u32ptr == 0 || *u32ptr == 0) {
1534 + printk(KERN_ERR "rbppc_cf_init_info: Serial does not have clock-frequency\n");
1535 + of_node_put(np);
1536 + return -1;
1537 + }
1538 + ccb_freq_hz = *u32ptr;
1539 + of_node_put(np);
1540 +
1541 + np = of_find_node_by_type(NULL, "soc");
1542 + if (!np) {
1543 + printk(KERN_ERR "rbppc_cf_init_info: No soc node found\n");
1544 + return -1;
1545 + }
1546 + if (of_address_to_resource(np, 0, &res)) {
1547 + printk(KERN_ERR "rbppc_cf_init_info: soc does not have resource\n");
1548 + of_node_put(np);
1549 + return -1;
1550 + }
1551 + info->lbcfg_addr = res.start + IMMR_LBCFG_OFFSET;
1552 + of_node_put(np);
1553 +
1554 + lbcfgBase = ioremap_nocache(info->lbcfg_addr, IMMR_LBCFG_SIZE);
1555 + lbcfg_lcrr = ((char*)lbcfgBase) + LOCAL_BUS_LCRR;
1556 + lb_div = (in_be32(lbcfg_lcrr) & LCRR_CLKDIV_MASK) * lbc_extra_divider;
1557 + iounmap(lbcfgBase);
1558 +
1559 + lbc_clk_khz = ccb_freq_hz / (1000 * lb_div);
1560 + info->clk_time_ps = 1000000000 / lbc_clk_khz;
1561 + printk(KERN_INFO "rbppc_cf_init_info: Using Local-Bus clock %u kHz %u ps\n",
1562 + lbc_clk_khz, info->clk_time_ps);
1563 +
1564 + u32ptr = of_get_property(pdev->node, "lb-timings", NULL);
1565 + if (u32ptr) {
1566 + memcpy(info->lb_timings, u32ptr, LBT_SIZE * sizeof(*u32ptr));
1567 +#if DEBUG_UPM
1568 + printk(KERN_INFO "rbppc_cf_init_info: Got LB timings <%u %u %u %u %u>\n",
1569 + u32ptr[0], u32ptr[1], u32ptr[2], u32ptr[3], u32ptr[4]);
1570 +#endif
1571 + }
1572 + info->cur_mode = -1;
1573 + return 0;
1574 +}
1575 +
1576 +static int rbppc_cf_probe(struct of_device *pdev,
1577 + const struct of_device_id *match)
1578 +{
1579 + struct ata_host *host;
1580 + struct ata_port *ap;
1581 + struct rbppc_cf_info *info = NULL;
1582 + struct resource res;
1583 + void *baddr;
1584 + const u32 *u32ptr;
1585 + int irq_level = 0;
1586 + int err = -ENOMEM;
1587 +
1588 + printk(KERN_INFO "rbppc_cf_probe: MikroTik RouterBOARD 600 series Compact Flash PATA driver, version " DRV_VERSION "\n");
1589 +
1590 + if (rbinfo == NULL) {
1591 + info = kmalloc(sizeof(*info), GFP_KERNEL);
1592 + if (info == NULL) {
1593 + printk(KERN_ERR "rbppc_cf_probe: Out of memory\n");
1594 + goto err_info;
1595 + }
1596 + memset(info, 0, sizeof(*info));
1597 +
1598 + if (rbppc_cf_init_info(pdev, info)) {
1599 + goto err_info;
1600 + }
1601 + rbinfo = info;
1602 + }
1603 +
1604 + u32ptr = of_get_property(pdev->node, "interrupt-at-level", NULL);
1605 + if (u32ptr) {
1606 + irq_level = *u32ptr;
1607 + printk(KERN_INFO "rbppc_cf_probe: IRQ level %u\n", irq_level);
1608 + }
1609 +
1610 + if (of_address_to_resource(pdev->node, 0, &res)) {
1611 + printk(KERN_ERR "rbppc_cf_probe: No reg property found\n");
1612 + goto err_info;
1613 + }
1614 +
1615 + host = ata_host_alloc(&pdev->dev, 1);
1616 + if (!host)
1617 + goto err_info;
1618 +
1619 + baddr = localbus_map(res.start, res.end - res.start + 1);
1620 + host->iomap = baddr;
1621 + host->private_data = rbinfo;
1622 +
1623 + ap = host->ports[0];
1624 + ap->ops = &rbppc_cf_port_ops;
1625 + ap->pio_mask = 0x7F; /* PIO modes 0-6 */
1626 + ap->flags = ATA_FLAG_NO_LEGACY;
1627 + ap->mwdma_mask = 0;
1628 +
1629 + ap->ioaddr.cmd_addr = baddr;
1630 + ata_sff_std_ports(&ap->ioaddr);
1631 + ap->ioaddr.ctl_addr = ap->ioaddr.cmd_addr + 14;
1632 + ap->ioaddr.altstatus_addr = ap->ioaddr.ctl_addr;
1633 + ap->ioaddr.bmdma_addr = 0;
1634 +
1635 + err = ata_host_activate(
1636 + host,
1637 + irq_of_parse_and_map(pdev->node, 0), ata_sff_interrupt,
1638 + irq_level ? IRQF_TRIGGER_HIGH : IRQF_TRIGGER_LOW,
1639 + &rbppc_cf_sht);
1640 + if (!err) return 0;
1641 +
1642 + localbus_unmap(baddr);
1643 +err_info:
1644 + if (info) {
1645 + kfree(info);
1646 + rbinfo = NULL;
1647 + }
1648 + return err;
1649 +}
1650 +
1651 +static int rbppc_cf_remove(struct of_device *pdev)
1652 +{
1653 + struct device *dev = &pdev->dev;
1654 + struct ata_host *host = dev_get_drvdata(dev);
1655 +
1656 + if (host == NULL) return -1;
1657 +
1658 + ata_host_detach(host);
1659 + return 0;
1660 +}
1661 +
1662 +static struct of_device_id rbppc_cf_ids[] = {
1663 + { .name = "cf", },
1664 + { },
1665 +};
1666 +
1667 +static struct of_platform_driver rbppc_cf_driver = {
1668 + .name = "cf",
1669 + .probe = rbppc_cf_probe,
1670 + .remove = rbppc_cf_remove,
1671 + .match_table = rbppc_cf_ids,
1672 + .driver = {
1673 + .name = "rbppc-cf",
1674 + .owner = THIS_MODULE,
1675 + },
1676 +};
1677 +
1678 +static int __init rbppc_init(void)
1679 +{
1680 + return of_register_platform_driver(&rbppc_cf_driver);
1681 +}
1682 +
1683 +static void __exit rbppc_exit(void)
1684 +{
1685 + of_unregister_platform_driver(&rbppc_cf_driver);
1686 +}
1687 +
1688 +MODULE_AUTHOR("Mikrotikls SIA");
1689 +MODULE_AUTHOR("Noah Fontes");
1690 +MODULE_DESCRIPTION("MikroTik RouterBOARD 600 series Compact Flash PATA driver");
1691 +MODULE_LICENSE("GPL");
1692 +MODULE_VERSION(DRV_VERSION);
1693 +
1694 +module_init(rbppc_init);
1695 +module_exit(rbppc_exit);
1696 --- a/drivers/mtd/nand/Kconfig
1697 +++ b/drivers/mtd/nand/Kconfig
1698 @@ -403,6 +403,13 @@ config MTD_NAND_PLATFORM
1699 devices. You will need to provide platform-specific functions
1700 via platform_data.
1701
1702 +config MTD_NAND_RB_PPC
1703 + tristate "MikroTik RB600 NAND support"
1704 + depends on MTD_NAND && MTD_PARTITIONS && RB_PPC
1705 + help
1706 + This option enables support for the NAND device on MikroTik
1707 + RouterBOARD 600 series boards.
1708 +
1709 config MTD_ALAUDA
1710 tristate "MTD driver for Olympus MAUSB-10 and Fujifilm DPC-R1"
1711 depends on MTD_NAND && USB
1712 --- a/drivers/mtd/nand/Makefile
1713 +++ b/drivers/mtd/nand/Makefile
1714 @@ -31,6 +31,7 @@ obj-$(CONFIG_MTD_NAND_BASLER_EXCITE) +=
1715 obj-$(CONFIG_MTD_NAND_PXA3xx) += pxa3xx_nand.o
1716 obj-$(CONFIG_MTD_NAND_TMIO) += tmio_nand.o
1717 obj-$(CONFIG_MTD_NAND_PLATFORM) += plat_nand.o
1718 +obj-$(CONFIG_MTD_NAND_RB_PPC) += rbppc_nand.o
1719 obj-$(CONFIG_MTD_ALAUDA) += alauda.o
1720 obj-$(CONFIG_MTD_NAND_PASEMI) += pasemi_nand.o
1721 obj-$(CONFIG_MTD_NAND_ORION) += orion_nand.o
1722 --- /dev/null
1723 +++ b/drivers/mtd/nand/rbppc_nand.c
1724 @@ -0,0 +1,252 @@
1725 +/*
1726 + * Copyright (C) 2008-2009 Noah Fontes <nfontes@transtruct.org>
1727 + * Copyright (C) 2009 Michael Guntsche <mike@it-loops.com>
1728 + * Copyright (C) Mikrotik 2007
1729 + *
1730 + * This program is free software; you can redistribute it and/or modify it
1731 + * under the terms of the GNU General Public License as published by the
1732 + * Free Software Foundation; either version 2 of the License, or (at your
1733 + * option) any later version.
1734 + */
1735 +
1736 +#include <linux/init.h>
1737 +#include <linux/mtd/nand.h>
1738 +#include <linux/mtd/mtd.h>
1739 +#include <linux/mtd/partitions.h>
1740 +#include <linux/of_platform.h>
1741 +#include <asm/of_platform.h>
1742 +#include <asm/of_device.h>
1743 +#include <linux/delay.h>
1744 +#include <asm/io.h>
1745 +
1746 +#define DRV_NAME "rbppc_nand"
1747 +#define DRV_VERSION "0.0.2"
1748 +
1749 +static struct mtd_info rmtd;
1750 +static struct nand_chip rnand;
1751 +
1752 +struct rbppc_nand_info {
1753 + void *gpi;
1754 + void *gpo;
1755 + void *localbus;
1756 +
1757 + unsigned gpio_rdy;
1758 + unsigned gpio_nce;
1759 + unsigned gpio_cle;
1760 + unsigned gpio_ale;
1761 + unsigned gpio_ctrls;
1762 +};
1763 +
1764 +/* We must use the OOB layout from yaffs 1 if we want this to be recognized
1765 + * properly. Borrowed from the OpenWRT patches for the RB532.
1766 + *
1767 + * See <https://dev.openwrt.org/browser/trunk/target/linux/rb532/
1768 + * patches-2.6.28/025-rb532_nand_fixup.patch> for more details.
1769 + */
1770 +static struct nand_ecclayout rbppc_nand_oob_16 = {
1771 + .eccbytes = 6,
1772 + .eccpos = { 8, 9, 10, 13, 14, 15 },
1773 + .oobavail = 9,
1774 + .oobfree = { { 0, 4 }, { 6, 2 }, { 11, 2 }, { 4, 1 } }
1775 +};
1776 +
1777 +static struct mtd_partition rbppc_nand_partition_info[] = {
1778 + {
1779 + name: "RouterBOARD NAND Boot",
1780 + offset: 0,
1781 + size: 4 * 1024 * 1024,
1782 + },
1783 + {
1784 + name: "RouterBOARD NAND Main",
1785 + offset: MTDPART_OFS_NXTBLK,
1786 + size: MTDPART_SIZ_FULL,
1787 + },
1788 +};
1789 +
1790 +static int rbppc_nand_dev_ready(struct mtd_info *mtd) {
1791 + struct nand_chip *chip = mtd->priv;
1792 + struct rbppc_nand_info *priv = chip->priv;
1793 +
1794 + return in_be32(priv->gpi) & priv->gpio_rdy;
1795 +}
1796 +
1797 +static void rbppc_nand_cmd_ctrl(struct mtd_info *mtd, int cmd, unsigned int ctrl) {
1798 + struct nand_chip *chip = mtd->priv;
1799 + struct rbppc_nand_info *priv = chip->priv;
1800 +
1801 + if (ctrl & NAND_CTRL_CHANGE) {
1802 + unsigned val = in_be32(priv->gpo);
1803 + if (!(val & priv->gpio_nce)) {
1804 + /* make sure Local Bus has done NAND operations */
1805 + readb(priv->localbus);
1806 + }
1807 +
1808 + if (ctrl & NAND_CLE) {
1809 + val |= priv->gpio_cle;
1810 + } else {
1811 + val &= ~priv->gpio_cle;
1812 + }
1813 + if (ctrl & NAND_ALE) {
1814 + val |= priv->gpio_ale;
1815 + } else {
1816 + val &= ~priv->gpio_ale;
1817 + }
1818 + if (!(ctrl & NAND_NCE)) {
1819 + val |= priv->gpio_nce;
1820 + } else {
1821 + val &= ~priv->gpio_nce;
1822 + }
1823 + out_be32(priv->gpo, val);
1824 +
1825 + /* make sure GPIO output has changed */
1826 + val ^= in_be32(priv->gpo);
1827 + if (val & priv->gpio_ctrls) {
1828 + printk(KERN_ERR "rbppc_nand_hwcontrol: NAND GPO change failed 0x%08x\n", val);
1829 + }
1830 + }
1831 +
1832 + if (cmd != NAND_CMD_NONE) writeb(cmd, chip->IO_ADDR_W);
1833 +}
1834 +
1835 +static void rbppc_nand_read_buf(struct mtd_info *mtd, uint8_t *buf, int len)
1836 +{
1837 + struct nand_chip *chip = mtd->priv;
1838 + memcpy(buf, chip->IO_ADDR_R, len);
1839 +}
1840 +
1841 +static unsigned init_ok = 0;
1842 +
1843 +static int rbppc_nand_probe(struct of_device *pdev,
1844 + const struct of_device_id *match)
1845 +{
1846 + struct device_node *gpio;
1847 + struct device_node *nnand;
1848 + struct resource res;
1849 + struct rbppc_nand_info *info;
1850 + void *baddr;
1851 + const unsigned *rdy, *nce, *cle, *ale;
1852 +
1853 + printk(KERN_INFO "rbppc_nand_probe: MikroTik RouterBOARD 600 series NAND driver, version " DRV_VERSION "\n");
1854 +
1855 + info = kmalloc(sizeof(*info), GFP_KERNEL);
1856 +
1857 + rdy = of_get_property(pdev->node, "rdy", NULL);
1858 + nce = of_get_property(pdev->node, "nce", NULL);
1859 + cle = of_get_property(pdev->node, "cle", NULL);
1860 + ale = of_get_property(pdev->node, "ale", NULL);
1861 +
1862 + if (!rdy || !nce || !cle || !ale) {
1863 + printk(KERN_ERR "rbppc_nand_probe: GPIO properties are missing\n");
1864 + goto err;
1865 + }
1866 + if (rdy[0] != nce[0] || rdy[0] != cle[0] || rdy[0] != ale[0]) {
1867 + printk(KERN_ERR "rbppc_nand_probe: Different GPIOs are not supported\n");
1868 + goto err;
1869 + }
1870 +
1871 + gpio = of_find_node_by_phandle(rdy[0]);
1872 + if (!gpio) {
1873 + printk(KERN_ERR "rbppc_nand_probe: No GPIO<%x> node found\n", *rdy);
1874 + goto err;
1875 + }
1876 + if (of_address_to_resource(gpio, 0, &res)) {
1877 + printk(KERN_ERR "rbppc_nand_probe: No reg property in GPIO found\n");
1878 + goto err;
1879 + }
1880 + info->gpo = ioremap_nocache(res.start, res.end - res.start + 1);
1881 +
1882 + if (!of_address_to_resource(gpio, 1, &res)) {
1883 + info->gpi = ioremap_nocache(res.start, res.end - res.start + 1);
1884 + } else {
1885 + info->gpi = info->gpo;
1886 + }
1887 + of_node_put(gpio);
1888 +
1889 + info->gpio_rdy = 1 << (31 - rdy[1]);
1890 + info->gpio_nce = 1 << (31 - nce[1]);
1891 + info->gpio_cle = 1 << (31 - cle[1]);
1892 + info->gpio_ale = 1 << (31 - ale[1]);
1893 + info->gpio_ctrls = info->gpio_nce | info->gpio_cle | info->gpio_ale;
1894 +
1895 + nnand = of_find_node_by_name(NULL, "nnand");
1896 + if (!nnand) {
1897 + printk("rbppc_nand_probe: No nNAND found\n");
1898 + goto err;
1899 + }
1900 + if (of_address_to_resource(nnand, 0, &res)) {
1901 + printk("rbppc_nand_probe: No reg property in nNAND found\n");
1902 + goto err;
1903 + }
1904 + of_node_put(nnand);
1905 + info->localbus = ioremap_nocache(res.start, res.end - res.start + 1);
1906 +
1907 + if (of_address_to_resource(pdev->node, 0, &res)) {
1908 + printk("rbppc_nand_probe: No reg property found\n");
1909 + goto err;
1910 + }
1911 + baddr = ioremap_nocache(res.start, res.end - res.start + 1);
1912 +
1913 + memset(&rnand, 0, sizeof(rnand));
1914 + rnand.cmd_ctrl = rbppc_nand_cmd_ctrl;
1915 + rnand.dev_ready = rbppc_nand_dev_ready;
1916 + rnand.read_buf = rbppc_nand_read_buf;
1917 + rnand.IO_ADDR_W = baddr;
1918 + rnand.IO_ADDR_R = baddr;
1919 + rnand.priv = info;
1920 +
1921 + memset(&rmtd, 0, sizeof(rmtd));
1922 + rnand.ecc.mode = NAND_ECC_SOFT;
1923 + rnand.ecc.layout = &rbppc_nand_oob_16;
1924 + rnand.chip_delay = 25;
1925 + rnand.options |= NAND_NO_AUTOINCR;
1926 + rmtd.priv = &rnand;
1927 + rmtd.owner = THIS_MODULE;
1928 +
1929 + if (nand_scan(&rmtd, 1) && nand_scan(&rmtd, 1) && nand_scan(&rmtd, 1) && nand_scan(&rmtd, 1)) {
1930 + printk(KERN_ERR "rbppc_nand_probe: RouterBOARD NAND device not found\n");
1931 + return -ENXIO;
1932 + }
1933 +
1934 + add_mtd_partitions(&rmtd, rbppc_nand_partition_info, 2);
1935 + init_ok = 1;
1936 + return 0;
1937 +
1938 +err:
1939 + kfree(info);
1940 + return -1;
1941 +}
1942 +
1943 +static struct of_device_id rbppc_nand_ids[] = {
1944 + { .name = "nand", },
1945 + { },
1946 +};
1947 +
1948 +static struct of_platform_driver rbppc_nand_driver = {
1949 + .name = "nand",
1950 + .probe = rbppc_nand_probe,
1951 + .match_table = rbppc_nand_ids,
1952 + .driver = {
1953 + .name = "rbppc-nand",
1954 + .owner = THIS_MODULE,
1955 + },
1956 +};
1957 +
1958 +static int __init rbppc_nand_init(void)
1959 +{
1960 + return of_register_platform_driver(&rbppc_nand_driver);
1961 +}
1962 +
1963 +static void __exit rbppc_nand_exit(void)
1964 +{
1965 + of_unregister_platform_driver(&rbppc_nand_driver);
1966 +}
1967 +
1968 +MODULE_AUTHOR("Mikrotikls SIA");
1969 +MODULE_AUTHOR("Noah Fontes");
1970 +MODULE_AUTHOR("Michael Guntsche");
1971 +MODULE_DESCRIPTION("MikroTik RouterBOARD 600 series NAND driver");
1972 +MODULE_LICENSE("GPL");
1973 +MODULE_VERSION(DRV_VERSION);
1974 +
1975 +module_init(rbppc_nand_init);
1976 +module_exit(rbppc_nand_exit);
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