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authorLinus Torvalds <torvalds@woody.linux-foundation.org>2007-05-09 16:10:11 -0400
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-05-09 16:10:11 -0400
commitba7cc09c9c9e29a57045dc5bbf843ac1cfad3283 (patch)
tree7e2d39269803b53ba048f3bad11cd6a1a38b35b9 /drivers/mtd
parentd84c4124c4b6611301b402e8611b7e36de3bd351 (diff)
parentb7aa48be1e7a11e36448a7db58931bbf735d2718 (diff)
Merge git://git.infradead.org/mtd-2.6
* git://git.infradead.org/mtd-2.6: (21 commits) [MTD] [CHIPS] Remove MTD_OBSOLETE_CHIPS (jedec, amd_flash, sharp) [MTD] Delete allegedly obsolete "bank_size" field of mtd_info. [MTD] Remove unnecessary user space check from mtd.h. [MTD] [MAPS] Remove flash maps for no longer supported 405LP boards [MTD] [MAPS] Fix missing printk() parameter in physmap_of.c MTD driver [MTD] [NAND] platform NAND driver: add driver [MTD] [NAND] platform NAND driver: update header [JFFS2] Simplify and clean up jffs2_add_tn_to_tree() some more. [JFFS2] Remove another bogus optimisation in jffs2_add_tn_to_tree() [JFFS2] Remove broken insert_point optimisation in jffs2_add_tn_to_tree() [JFFS2] Remember to calculate overlap on nodes which replace older nodes [JFFS2] Don't advance c->wbuf_ofs to next eraseblock after wbuf flush [MTD] [NAND] at91_nand.c: CMDLINE_PARTS support [MTD] [NAND] Tidy up handling of page number in nand_block_bad() [MTD] block2mtd_paramline[] mustn't be __initdata [MTD] [NAND] Support multiple chips in CAFÉ driver [MTD] [NAND] Rename cafe.c to cafe_nand.c and remove the multi-obj magic [MTD] [NAND] Use rslib for CAFÉ ECC [RSLIB] Support non-canonical GF representations [JFFS2] Remove dead file histo_mips.h ...
Diffstat (limited to 'drivers/mtd')
-rw-r--r--drivers/mtd/chips/Kconfig40
-rw-r--r--drivers/mtd/chips/Makefile4
-rw-r--r--drivers/mtd/chips/amd_flash.c1396
-rw-r--r--drivers/mtd/chips/jedec.c935
-rw-r--r--drivers/mtd/chips/sharp.c601
-rw-r--r--drivers/mtd/devices/block2mtd.c2
-rw-r--r--drivers/mtd/maps/Kconfig16
-rw-r--r--drivers/mtd/maps/Makefile2
-rw-r--r--drivers/mtd/maps/arctic-mtd.c145
-rw-r--r--drivers/mtd/maps/beech-mtd.c122
-rw-r--r--drivers/mtd/maps/physmap_of.c2
-rw-r--r--drivers/mtd/mtdpart.c1
-rw-r--r--drivers/mtd/nand/Kconfig21
-rw-r--r--drivers/mtd/nand/Makefile2
-rw-r--r--drivers/mtd/nand/at91_nand.c10
-rw-r--r--drivers/mtd/nand/cafe_ecc.c1381
-rw-r--r--drivers/mtd/nand/cafe_nand.c (renamed from drivers/mtd/nand/cafe.c)137
-rw-r--r--drivers/mtd/nand/nand_base.c11
-rw-r--r--drivers/mtd/nand/plat_nand.c150
19 files changed, 301 insertions, 4677 deletions
diff --git a/drivers/mtd/chips/Kconfig b/drivers/mtd/chips/Kconfig
index d28e0fc85e12..479d32b57a1e 100644
--- a/drivers/mtd/chips/Kconfig
+++ b/drivers/mtd/chips/Kconfig
@@ -1,5 +1,4 @@
1# drivers/mtd/chips/Kconfig 1# drivers/mtd/chips/Kconfig
2# $Id: Kconfig,v 1.18 2005/11/07 11:14:22 gleixner Exp $
3 2
4menu "RAM/ROM/Flash chip drivers" 3menu "RAM/ROM/Flash chip drivers"
5 depends on MTD!=n 4 depends on MTD!=n
@@ -231,45 +230,6 @@ config MTD_ABSENT
231 the system regardless of media presence. Device nodes created 230 the system regardless of media presence. Device nodes created
232 with this driver will return -ENODEV upon access. 231 with this driver will return -ENODEV upon access.
233 232
234config MTD_OBSOLETE_CHIPS
235 bool "Older (theoretically obsoleted now) drivers for non-CFI chips"
236 help
237 This option does not enable any code directly, but will allow you to
238 select some other chip drivers which are now considered obsolete,
239 because the generic CONFIG_JEDECPROBE code above should now detect
240 the chips which are supported by these drivers, and allow the generic
241 CFI-compatible drivers to drive the chips. Say 'N' here unless you have
242 already tried the CONFIG_JEDECPROBE method and reported its failure
243 to the MTD mailing list at <linux-mtd@lists.infradead.org>
244
245config MTD_AMDSTD
246 tristate "AMD compatible flash chip support (non-CFI)"
247 depends on MTD_OBSOLETE_CHIPS && BROKEN
248 help
249 This option enables support for flash chips using AMD-compatible
250 commands, including some which are not CFI-compatible and hence
251 cannot be used with the CONFIG_MTD_CFI_AMDSTD option.
252
253 It also works on AMD compatible chips that do conform to CFI.
254
255config MTD_SHARP
256 tristate "pre-CFI Sharp chip support"
257 depends on MTD_OBSOLETE_CHIPS
258 help
259 This option enables support for flash chips using Sharp-compatible
260 commands, including some which are not CFI-compatible and hence
261 cannot be used with the CONFIG_MTD_CFI_INTELxxx options.
262
263config MTD_JEDEC
264 tristate "JEDEC device support"
265 depends on MTD_OBSOLETE_CHIPS && BROKEN
266 help
267 Enable older JEDEC flash interface devices for self
268 programming flash. It is commonly used in older AMD chips. It is
269 only called JEDEC because the JEDEC association
270 <http://www.jedec.org/> distributes the identification codes for the
271 chips.
272
273config MTD_XIP 233config MTD_XIP
274 bool "XIP aware MTD support" 234 bool "XIP aware MTD support"
275 depends on !SMP && (MTD_CFI_INTELEXT || MTD_CFI_AMDSTD) && EXPERIMENTAL && ARCH_MTD_XIP 235 depends on !SMP && (MTD_CFI_INTELEXT || MTD_CFI_AMDSTD) && EXPERIMENTAL && ARCH_MTD_XIP
diff --git a/drivers/mtd/chips/Makefile b/drivers/mtd/chips/Makefile
index 75bc1c2a0f43..36582412ccda 100644
--- a/drivers/mtd/chips/Makefile
+++ b/drivers/mtd/chips/Makefile
@@ -1,19 +1,15 @@
1# 1#
2# linux/drivers/chips/Makefile 2# linux/drivers/chips/Makefile
3# 3#
4# $Id: Makefile.common,v 1.5 2005/11/07 11:14:22 gleixner Exp $
5 4
6obj-$(CONFIG_MTD) += chipreg.o 5obj-$(CONFIG_MTD) += chipreg.o
7obj-$(CONFIG_MTD_AMDSTD) += amd_flash.o
8obj-$(CONFIG_MTD_CFI) += cfi_probe.o 6obj-$(CONFIG_MTD_CFI) += cfi_probe.o
9obj-$(CONFIG_MTD_CFI_UTIL) += cfi_util.o 7obj-$(CONFIG_MTD_CFI_UTIL) += cfi_util.o
10obj-$(CONFIG_MTD_CFI_STAA) += cfi_cmdset_0020.o 8obj-$(CONFIG_MTD_CFI_STAA) += cfi_cmdset_0020.o
11obj-$(CONFIG_MTD_CFI_AMDSTD) += cfi_cmdset_0002.o 9obj-$(CONFIG_MTD_CFI_AMDSTD) += cfi_cmdset_0002.o
12obj-$(CONFIG_MTD_CFI_INTELEXT) += cfi_cmdset_0001.o 10obj-$(CONFIG_MTD_CFI_INTELEXT) += cfi_cmdset_0001.o
13obj-$(CONFIG_MTD_GEN_PROBE) += gen_probe.o 11obj-$(CONFIG_MTD_GEN_PROBE) += gen_probe.o
14obj-$(CONFIG_MTD_JEDEC) += jedec.o
15obj-$(CONFIG_MTD_JEDECPROBE) += jedec_probe.o 12obj-$(CONFIG_MTD_JEDECPROBE) += jedec_probe.o
16obj-$(CONFIG_MTD_RAM) += map_ram.o 13obj-$(CONFIG_MTD_RAM) += map_ram.o
17obj-$(CONFIG_MTD_ROM) += map_rom.o 14obj-$(CONFIG_MTD_ROM) += map_rom.o
18obj-$(CONFIG_MTD_SHARP) += sharp.o
19obj-$(CONFIG_MTD_ABSENT) += map_absent.o 15obj-$(CONFIG_MTD_ABSENT) += map_absent.o
diff --git a/drivers/mtd/chips/amd_flash.c b/drivers/mtd/chips/amd_flash.c
deleted file mode 100644
index e7999f15d85a..000000000000
--- a/drivers/mtd/chips/amd_flash.c
+++ /dev/null
@@ -1,1396 +0,0 @@
1/*
2 * MTD map driver for AMD compatible flash chips (non-CFI)
3 *
4 * Author: Jonas Holmberg <jonas.holmberg@axis.com>
5 *
6 * $Id: amd_flash.c,v 1.28 2005/11/07 11:14:22 gleixner Exp $
7 *
8 * Copyright (c) 2001 Axis Communications AB
9 *
10 * This file is under GPL.
11 *
12 */
13
14#include <linux/module.h>
15#include <linux/types.h>
16#include <linux/kernel.h>
17#include <linux/sched.h>
18#include <linux/errno.h>
19#include <linux/slab.h>
20#include <linux/delay.h>
21#include <linux/interrupt.h>
22#include <linux/init.h>
23#include <linux/mtd/map.h>
24#include <linux/mtd/mtd.h>
25#include <linux/mtd/flashchip.h>
26
27/* There's no limit. It exists only to avoid realloc. */
28#define MAX_AMD_CHIPS 8
29
30#define DEVICE_TYPE_X8 (8 / 8)
31#define DEVICE_TYPE_X16 (16 / 8)
32#define DEVICE_TYPE_X32 (32 / 8)
33
34/* Addresses */
35#define ADDR_MANUFACTURER 0x0000
36#define ADDR_DEVICE_ID 0x0001
37#define ADDR_SECTOR_LOCK 0x0002
38#define ADDR_HANDSHAKE 0x0003
39#define ADDR_UNLOCK_1 0x0555
40#define ADDR_UNLOCK_2 0x02AA
41
42/* Commands */
43#define CMD_UNLOCK_DATA_1 0x00AA
44#define CMD_UNLOCK_DATA_2 0x0055
45#define CMD_MANUFACTURER_UNLOCK_DATA 0x0090
46#define CMD_UNLOCK_BYPASS_MODE 0x0020
47#define CMD_PROGRAM_UNLOCK_DATA 0x00A0
48#define CMD_RESET_DATA 0x00F0
49#define CMD_SECTOR_ERASE_UNLOCK_DATA 0x0080
50#define CMD_SECTOR_ERASE_UNLOCK_DATA_2 0x0030
51
52#define CMD_UNLOCK_SECTOR 0x0060
53
54/* Manufacturers */
55#define MANUFACTURER_AMD 0x0001
56#define MANUFACTURER_ATMEL 0x001F
57#define MANUFACTURER_FUJITSU 0x0004
58#define MANUFACTURER_ST 0x0020
59#define MANUFACTURER_SST 0x00BF
60#define MANUFACTURER_TOSHIBA 0x0098
61
62/* AMD */
63#define AM29F800BB 0x2258
64#define AM29F800BT 0x22D6
65#define AM29LV800BB 0x225B
66#define AM29LV800BT 0x22DA
67#define AM29LV160DT 0x22C4
68#define AM29LV160DB 0x2249
69#define AM29BDS323D 0x22D1
70
71/* Atmel */
72#define AT49xV16x 0x00C0
73#define AT49xV16xT 0x00C2
74
75/* Fujitsu */
76#define MBM29LV160TE 0x22C4
77#define MBM29LV160BE 0x2249
78#define MBM29LV800BB 0x225B
79
80/* ST - www.st.com */
81#define M29W800T 0x00D7
82#define M29W160DT 0x22C4
83#define M29W160DB 0x2249
84
85/* SST */
86#define SST39LF800 0x2781
87#define SST39LF160 0x2782
88
89/* Toshiba */
90#define TC58FVT160 0x00C2
91#define TC58FVB160 0x0043
92
93#define D6_MASK 0x40
94
95struct amd_flash_private {
96 int device_type;
97 int interleave;
98 int numchips;
99 unsigned long chipshift;
100 struct flchip chips[0];
101};
102
103struct amd_flash_info {
104 const __u16 mfr_id;
105 const __u16 dev_id;
106 const char *name;
107 const u_long size;
108 const int numeraseregions;
109 const struct mtd_erase_region_info regions[4];
110};
111
112
113
114static int amd_flash_read(struct mtd_info *, loff_t, size_t, size_t *,
115 u_char *);
116static int amd_flash_write(struct mtd_info *, loff_t, size_t, size_t *,
117 const u_char *);
118static int amd_flash_erase(struct mtd_info *, struct erase_info *);
119static void amd_flash_sync(struct mtd_info *);
120static int amd_flash_suspend(struct mtd_info *);
121static void amd_flash_resume(struct mtd_info *);
122static void amd_flash_destroy(struct mtd_info *);
123static struct mtd_info *amd_flash_probe(struct map_info *map);
124
125
126static struct mtd_chip_driver amd_flash_chipdrv = {
127 .probe = amd_flash_probe,
128 .destroy = amd_flash_destroy,
129 .name = "amd_flash",
130 .module = THIS_MODULE
131};
132
133static inline __u32 wide_read(struct map_info *map, __u32 addr)
134{
135 if (map->buswidth == 1) {
136 return map_read8(map, addr);
137 } else if (map->buswidth == 2) {
138 return map_read16(map, addr);
139 } else if (map->buswidth == 4) {
140 return map_read32(map, addr);
141 }
142
143 return 0;
144}
145
146static inline void wide_write(struct map_info *map, __u32 val, __u32 addr)
147{
148 if (map->buswidth == 1) {
149 map_write8(map, val, addr);
150 } else if (map->buswidth == 2) {
151 map_write16(map, val, addr);
152 } else if (map->buswidth == 4) {
153 map_write32(map, val, addr);
154 }
155}
156
157static inline __u32 make_cmd(struct map_info *map, __u32 cmd)
158{
159 const struct amd_flash_private *private = map->fldrv_priv;
160 if ((private->interleave == 2) &&
161 (private->device_type == DEVICE_TYPE_X16)) {
162 cmd |= (cmd << 16);
163 }
164
165 return cmd;
166}
167
168static inline void send_unlock(struct map_info *map, unsigned long base)
169{
170 wide_write(map, (CMD_UNLOCK_DATA_1 << 16) | CMD_UNLOCK_DATA_1,
171 base + (map->buswidth * ADDR_UNLOCK_1));
172 wide_write(map, (CMD_UNLOCK_DATA_2 << 16) | CMD_UNLOCK_DATA_2,
173 base + (map->buswidth * ADDR_UNLOCK_2));
174}
175
176static inline void send_cmd(struct map_info *map, unsigned long base, __u32 cmd)
177{
178 send_unlock(map, base);
179 wide_write(map, make_cmd(map, cmd),
180 base + (map->buswidth * ADDR_UNLOCK_1));
181}
182
183static inline void send_cmd_to_addr(struct map_info *map, unsigned long base,
184 __u32 cmd, unsigned long addr)
185{
186 send_unlock(map, base);
187 wide_write(map, make_cmd(map, cmd), addr);
188}
189
190static inline int flash_is_busy(struct map_info *map, unsigned long addr,
191 int interleave)
192{
193
194 if ((interleave == 2) && (map->buswidth == 4)) {
195 __u32 read1, read2;
196
197 read1 = wide_read(map, addr);
198 read2 = wide_read(map, addr);
199
200 return (((read1 >> 16) & D6_MASK) !=
201 ((read2 >> 16) & D6_MASK)) ||
202 (((read1 & 0xffff) & D6_MASK) !=
203 ((read2 & 0xffff) & D6_MASK));
204 }
205
206 return ((wide_read(map, addr) & D6_MASK) !=
207 (wide_read(map, addr) & D6_MASK));
208}
209
210static inline void unlock_sector(struct map_info *map, unsigned long sect_addr,
211 int unlock)
212{
213 /* Sector lock address. A6 = 1 for unlock, A6 = 0 for lock */
214 int SLA = unlock ?
215 (sect_addr | (0x40 * map->buswidth)) :
216 (sect_addr & ~(0x40 * map->buswidth)) ;
217
218 __u32 cmd = make_cmd(map, CMD_UNLOCK_SECTOR);
219
220 wide_write(map, make_cmd(map, CMD_RESET_DATA), 0);
221 wide_write(map, cmd, SLA); /* 1st cycle: write cmd to any address */
222 wide_write(map, cmd, SLA); /* 2nd cycle: write cmd to any address */
223 wide_write(map, cmd, SLA); /* 3rd cycle: write cmd to SLA */
224}
225
226static inline int is_sector_locked(struct map_info *map,
227 unsigned long sect_addr)
228{
229 int status;
230
231 wide_write(map, CMD_RESET_DATA, 0);
232 send_cmd(map, sect_addr, CMD_MANUFACTURER_UNLOCK_DATA);
233
234 /* status is 0x0000 for unlocked and 0x0001 for locked */
235 status = wide_read(map, sect_addr + (map->buswidth * ADDR_SECTOR_LOCK));
236 wide_write(map, CMD_RESET_DATA, 0);
237 return status;
238}
239
240static int amd_flash_do_unlock(struct mtd_info *mtd, loff_t ofs, size_t len,
241 int is_unlock)
242{
243 struct map_info *map;
244 struct mtd_erase_region_info *merip;
245 int eraseoffset, erasesize, eraseblocks;
246 int i;
247 int retval = 0;
248 int lock_status;
249
250 map = mtd->priv;
251
252 /* Pass the whole chip through sector by sector and check for each
253 sector if the sector and the given interval overlap */
254 for(i = 0; i < mtd->numeraseregions; i++) {
255 merip = &mtd->eraseregions[i];
256
257 eraseoffset = merip->offset;
258 erasesize = merip->erasesize;
259 eraseblocks = merip->numblocks;
260
261 if (ofs > eraseoffset + erasesize)
262 continue;
263
264 while (eraseblocks > 0) {
265 if (ofs < eraseoffset + erasesize && ofs + len > eraseoffset) {
266 unlock_sector(map, eraseoffset, is_unlock);
267
268 lock_status = is_sector_locked(map, eraseoffset);
269
270 if (is_unlock && lock_status) {
271 printk("Cannot unlock sector at address %x length %xx\n",
272 eraseoffset, merip->erasesize);
273 retval = -1;
274 } else if (!is_unlock && !lock_status) {
275 printk("Cannot lock sector at address %x length %x\n",
276 eraseoffset, merip->erasesize);
277 retval = -1;
278 }
279 }
280 eraseoffset += erasesize;
281 eraseblocks --;
282 }
283 }
284 return retval;
285}
286
287static int amd_flash_unlock(struct mtd_info *mtd, loff_t ofs, size_t len)
288{
289 return amd_flash_do_unlock(mtd, ofs, len, 1);
290}
291
292static int amd_flash_lock(struct mtd_info *mtd, loff_t ofs, size_t len)
293{
294 return amd_flash_do_unlock(mtd, ofs, len, 0);
295}
296
297
298/*
299 * Reads JEDEC manufacturer ID and device ID and returns the index of the first
300 * matching table entry (-1 if not found or alias for already found chip).
301 */
302static int probe_new_chip(struct mtd_info *mtd, __u32 base,
303 struct flchip *chips,
304 struct amd_flash_private *private,
305 const struct amd_flash_info *table, int table_size)
306{
307 __u32 mfr_id;
308 __u32 dev_id;
309 struct map_info *map = mtd->priv;
310 struct amd_flash_private temp;
311 int i;
312
313 temp.device_type = DEVICE_TYPE_X16; // Assume X16 (FIXME)
314 temp.interleave = 2;
315 map->fldrv_priv = &temp;
316
317 /* Enter autoselect mode. */
318 send_cmd(map, base, CMD_RESET_DATA);
319 send_cmd(map, base, CMD_MANUFACTURER_UNLOCK_DATA);
320
321 mfr_id = wide_read(map, base + (map->buswidth * ADDR_MANUFACTURER));
322 dev_id = wide_read(map, base + (map->buswidth * ADDR_DEVICE_ID));
323
324 if ((map->buswidth == 4) && ((mfr_id >> 16) == (mfr_id & 0xffff)) &&
325 ((dev_id >> 16) == (dev_id & 0xffff))) {
326 mfr_id &= 0xffff;
327 dev_id &= 0xffff;
328 } else {
329 temp.interleave = 1;
330 }
331
332 for (i = 0; i < table_size; i++) {
333 if ((mfr_id == table[i].mfr_id) &&
334 (dev_id == table[i].dev_id)) {
335 if (chips) {
336 int j;
337
338 /* Is this an alias for an already found chip?
339 * In that case that chip should be in
340 * autoselect mode now.
341 */
342 for (j = 0; j < private->numchips; j++) {
343 __u32 mfr_id_other;
344 __u32 dev_id_other;
345
346 mfr_id_other =
347 wide_read(map, chips[j].start +
348 (map->buswidth *
349 ADDR_MANUFACTURER
350 ));
351 dev_id_other =
352 wide_read(map, chips[j].start +
353 (map->buswidth *
354 ADDR_DEVICE_ID));
355 if (temp.interleave == 2) {
356 mfr_id_other &= 0xffff;
357 dev_id_other &= 0xffff;
358 }
359 if ((mfr_id_other == mfr_id) &&
360 (dev_id_other == dev_id)) {
361
362 /* Exit autoselect mode. */
363 send_cmd(map, base,
364 CMD_RESET_DATA);
365
366 return -1;
367 }
368 }
369
370 if (private->numchips == MAX_AMD_CHIPS) {
371 printk(KERN_WARNING
372 "%s: Too many flash chips "
373 "detected. Increase "
374 "MAX_AMD_CHIPS from %d.\n",
375 map->name, MAX_AMD_CHIPS);
376
377 return -1;
378 }
379
380 chips[private->numchips].start = base;
381 chips[private->numchips].state = FL_READY;
382 chips[private->numchips].mutex =
383 &chips[private->numchips]._spinlock;
384 private->numchips++;
385 }
386
387 printk("%s: Found %d x %ldMiB %s at 0x%x\n", map->name,
388 temp.interleave, (table[i].size)/(1024*1024),
389 table[i].name, base);
390
391 mtd->size += table[i].size * temp.interleave;
392 mtd->numeraseregions += table[i].numeraseregions;
393
394 break;
395 }
396 }
397
398 /* Exit autoselect mode. */
399 send_cmd(map, base, CMD_RESET_DATA);
400
401 if (i == table_size) {
402 printk(KERN_DEBUG "%s: unknown flash device at 0x%x, "
403 "mfr id 0x%x, dev id 0x%x\n", map->name,
404 base, mfr_id, dev_id);
405 map->fldrv_priv = NULL;
406
407 return -1;
408 }
409
410 private->device_type = temp.device_type;
411 private->interleave = temp.interleave;
412
413 return i;
414}
415
416
417
418static struct mtd_info *amd_flash_probe(struct map_info *map)
419{
420 static const struct amd_flash_info table[] = {
421 {
422 .mfr_id = MANUFACTURER_AMD,
423 .dev_id = AM29LV160DT,
424 .name = "AMD AM29LV160DT",
425 .size = 0x00200000,
426 .numeraseregions = 4,
427 .regions = {
428 { .offset = 0x000000, .erasesize = 0x10000, .numblocks = 31 },
429 { .offset = 0x1F0000, .erasesize = 0x08000, .numblocks = 1 },
430 { .offset = 0x1F8000, .erasesize = 0x02000, .numblocks = 2 },
431 { .offset = 0x1FC000, .erasesize = 0x04000, .numblocks = 1 }
432 }
433 }, {
434 .mfr_id = MANUFACTURER_AMD,
435 .dev_id = AM29LV160DB,
436 .name = "AMD AM29LV160DB",
437 .size = 0x00200000,
438 .numeraseregions = 4,
439 .regions = {
440 { .offset = 0x000000, .erasesize = 0x04000, .numblocks = 1 },
441 { .offset = 0x004000, .erasesize = 0x02000, .numblocks = 2 },
442 { .offset = 0x008000, .erasesize = 0x08000, .numblocks = 1 },
443 { .offset = 0x010000, .erasesize = 0x10000, .numblocks = 31 }
444 }
445 }, {
446 .mfr_id = MANUFACTURER_TOSHIBA,
447 .dev_id = TC58FVT160,
448 .name = "Toshiba TC58FVT160",
449 .size = 0x00200000,
450 .numeraseregions = 4,
451 .regions = {
452 { .offset = 0x000000, .erasesize = 0x10000, .numblocks = 31 },
453 { .offset = 0x1F0000, .erasesize = 0x08000, .numblocks = 1 },
454 { .offset = 0x1F8000, .erasesize = 0x02000, .numblocks = 2 },
455 { .offset = 0x1FC000, .erasesize = 0x04000, .numblocks = 1 }
456 }
457 }, {
458 .mfr_id = MANUFACTURER_FUJITSU,
459 .dev_id = MBM29LV160TE,
460 .name = "Fujitsu MBM29LV160TE",
461 .size = 0x00200000,
462 .numeraseregions = 4,
463 .regions = {
464 { .offset = 0x000000, .erasesize = 0x10000, .numblocks = 31 },
465 { .offset = 0x1F0000, .erasesize = 0x08000, .numblocks = 1 },
466 { .offset = 0x1F8000, .erasesize = 0x02000, .numblocks = 2 },
467 { .offset = 0x1FC000, .erasesize = 0x04000, .numblocks = 1 }
468 }
469 }, {
470 .mfr_id = MANUFACTURER_TOSHIBA,
471 .dev_id = TC58FVB160,
472 .name = "Toshiba TC58FVB160",
473 .size = 0x00200000,
474 .numeraseregions = 4,
475 .regions = {
476 { .offset = 0x000000, .erasesize = 0x04000, .numblocks = 1 },
477 { .offset = 0x004000, .erasesize = 0x02000, .numblocks = 2 },
478 { .offset = 0x008000, .erasesize = 0x08000, .numblocks = 1 },
479 { .offset = 0x010000, .erasesize = 0x10000, .numblocks = 31 }
480 }
481 }, {
482 .mfr_id = MANUFACTURER_FUJITSU,
483 .dev_id = MBM29LV160BE,
484 .name = "Fujitsu MBM29LV160BE",
485 .size = 0x00200000,
486 .numeraseregions = 4,
487 .regions = {
488 { .offset = 0x000000, .erasesize = 0x04000, .numblocks = 1 },
489 { .offset = 0x004000, .erasesize = 0x02000, .numblocks = 2 },
490 { .offset = 0x008000, .erasesize = 0x08000, .numblocks = 1 },
491 { .offset = 0x010000, .erasesize = 0x10000, .numblocks = 31 }
492 }
493 }, {
494 .mfr_id = MANUFACTURER_AMD,
495 .dev_id = AM29LV800BB,
496 .name = "AMD AM29LV800BB",
497 .size = 0x00100000,
498 .numeraseregions = 4,
499 .regions = {
500 { .offset = 0x000000, .erasesize = 0x04000, .numblocks = 1 },
501 { .offset = 0x004000, .erasesize = 0x02000, .numblocks = 2 },
502 { .offset = 0x008000, .erasesize = 0x08000, .numblocks = 1 },
503 { .offset = 0x010000, .erasesize = 0x10000, .numblocks = 15 }
504 }
505 }, {
506 .mfr_id = MANUFACTURER_AMD,
507 .dev_id = AM29F800BB,
508 .name = "AMD AM29F800BB",
509 .size = 0x00100000,
510 .numeraseregions = 4,
511 .regions = {
512 { .offset = 0x000000, .erasesize = 0x04000, .numblocks = 1 },
513 { .offset = 0x004000, .erasesize = 0x02000, .numblocks = 2 },
514 { .offset = 0x008000, .erasesize = 0x08000, .numblocks = 1 },
515 { .offset = 0x010000, .erasesize = 0x10000, .numblocks = 15 }
516 }
517 }, {
518 .mfr_id = MANUFACTURER_AMD,
519 .dev_id = AM29LV800BT,
520 .name = "AMD AM29LV800BT",
521 .size = 0x00100000,
522 .numeraseregions = 4,
523 .regions = {
524 { .offset = 0x000000, .erasesize = 0x10000, .numblocks = 15 },
525 { .offset = 0x0F0000, .erasesize = 0x08000, .numblocks = 1 },
526 { .offset = 0x0F8000, .erasesize = 0x02000, .numblocks = 2 },
527 { .offset = 0x0FC000, .erasesize = 0x04000, .numblocks = 1 }
528 }
529 }, {
530 .mfr_id = MANUFACTURER_AMD,
531 .dev_id = AM29F800BT,
532 .name = "AMD AM29F800BT",
533 .size = 0x00100000,
534 .numeraseregions = 4,
535 .regions = {
536 { .offset = 0x000000, .erasesize = 0x10000, .numblocks = 15 },
537 { .offset = 0x0F0000, .erasesize = 0x08000, .numblocks = 1 },
538 { .offset = 0x0F8000, .erasesize = 0x02000, .numblocks = 2 },
539 { .offset = 0x0FC000, .erasesize = 0x04000, .numblocks = 1 }
540 }
541 }, {
542 .mfr_id = MANUFACTURER_AMD,
543 .dev_id = AM29LV800BB,
544 .name = "AMD AM29LV800BB",
545 .size = 0x00100000,
546 .numeraseregions = 4,
547 .regions = {
548 { .offset = 0x000000, .erasesize = 0x10000, .numblocks = 15 },
549 { .offset = 0x0F0000, .erasesize = 0x08000, .numblocks = 1 },
550 { .offset = 0x0F8000, .erasesize = 0x02000, .numblocks = 2 },
551 { .offset = 0x0FC000, .erasesize = 0x04000, .numblocks = 1 }
552 }
553 }, {
554 .mfr_id = MANUFACTURER_FUJITSU,
555 .dev_id = MBM29LV800BB,
556 .name = "Fujitsu MBM29LV800BB",
557 .size = 0x00100000,
558 .numeraseregions = 4,
559 .regions = {
560 { .offset = 0x000000, .erasesize = 0x04000, .numblocks = 1 },
561 { .offset = 0x004000, .erasesize = 0x02000, .numblocks = 2 },
562 { .offset = 0x008000, .erasesize = 0x08000, .numblocks = 1 },
563 { .offset = 0x010000, .erasesize = 0x10000, .numblocks = 15 }
564 }
565 }, {
566 .mfr_id = MANUFACTURER_ST,
567 .dev_id = M29W800T,
568 .name = "ST M29W800T",
569 .size = 0x00100000,
570 .numeraseregions = 4,
571 .regions = {
572 { .offset = 0x000000, .erasesize = 0x10000, .numblocks = 15 },
573 { .offset = 0x0F0000, .erasesize = 0x08000, .numblocks = 1 },
574 { .offset = 0x0F8000, .erasesize = 0x02000, .numblocks = 2 },
575 { .offset = 0x0FC000, .erasesize = 0x04000, .numblocks = 1 }
576 }
577 }, {
578 .mfr_id = MANUFACTURER_ST,
579 .dev_id = M29W160DT,
580 .name = "ST M29W160DT",
581 .size = 0x00200000,
582 .numeraseregions = 4,
583 .regions = {
584 { .offset = 0x000000, .erasesize = 0x10000, .numblocks = 31 },
585 { .offset = 0x1F0000, .erasesize = 0x08000, .numblocks = 1 },
586 { .offset = 0x1F8000, .erasesize = 0x02000, .numblocks = 2 },
587 { .offset = 0x1FC000, .erasesize = 0x04000, .numblocks = 1 }
588 }
589 }, {
590 .mfr_id = MANUFACTURER_ST,
591 .dev_id = M29W160DB,
592 .name = "ST M29W160DB",
593 .size = 0x00200000,
594 .numeraseregions = 4,
595 .regions = {
596 { .offset = 0x000000, .erasesize = 0x04000, .numblocks = 1 },
597 { .offset = 0x004000, .erasesize = 0x02000, .numblocks = 2 },
598 { .offset = 0x008000, .erasesize = 0x08000, .numblocks = 1 },
599 { .offset = 0x010000, .erasesize = 0x10000, .numblocks = 31 }
600 }
601 }, {
602 .mfr_id = MANUFACTURER_AMD,
603 .dev_id = AM29BDS323D,
604 .name = "AMD AM29BDS323D",
605 .size = 0x00400000,
606 .numeraseregions = 3,
607 .regions = {
608 { .offset = 0x000000, .erasesize = 0x10000, .numblocks = 48 },
609 { .offset = 0x300000, .erasesize = 0x10000, .numblocks = 15 },
610 { .offset = 0x3f0000, .erasesize = 0x02000, .numblocks = 8 },
611 }
612 }, {
613 .mfr_id = MANUFACTURER_ATMEL,
614 .dev_id = AT49xV16x,
615 .name = "Atmel AT49xV16x",
616 .size = 0x00200000,
617 .numeraseregions = 2,
618 .regions = {
619 { .offset = 0x000000, .erasesize = 0x02000, .numblocks = 8 },
620 { .offset = 0x010000, .erasesize = 0x10000, .numblocks = 31 }
621 }
622 }, {
623 .mfr_id = MANUFACTURER_ATMEL,
624 .dev_id = AT49xV16xT,
625 .name = "Atmel AT49xV16xT",
626 .size = 0x00200000,
627 .numeraseregions = 2,
628 .regions = {
629 { .offset = 0x000000, .erasesize = 0x10000, .numblocks = 31 },
630 { .offset = 0x1F0000, .erasesize = 0x02000, .numblocks = 8 }
631 }
632 }
633 };
634
635 struct mtd_info *mtd;
636 struct flchip chips[MAX_AMD_CHIPS];
637 int table_pos[MAX_AMD_CHIPS];
638 struct amd_flash_private temp;
639 struct amd_flash_private *private;
640 u_long size;
641 unsigned long base;
642 int i;
643 int reg_idx;
644 int offset;
645
646 mtd = kzalloc(sizeof(*mtd), GFP_KERNEL);
647 if (!mtd) {
648 printk(KERN_WARNING
649 "%s: kmalloc failed for info structure\n", map->name);
650 return NULL;
651 }
652 mtd->priv = map;
653
654 memset(&temp, 0, sizeof(temp));
655
656 printk("%s: Probing for AMD compatible flash...\n", map->name);
657
658 if ((table_pos[0] = probe_new_chip(mtd, 0, NULL, &temp, table,
659 ARRAY_SIZE(table)))
660 == -1) {
661 printk(KERN_WARNING
662 "%s: Found no AMD compatible device at location zero\n",
663 map->name);
664 kfree(mtd);
665
666 return NULL;
667 }
668
669 chips[0].start = 0;
670 chips[0].state = FL_READY;
671 chips[0].mutex = &chips[0]._spinlock;
672 temp.numchips = 1;
673 for (size = mtd->size; size > 1; size >>= 1) {
674 temp.chipshift++;
675 }
676 switch (temp.interleave) {
677 case 2:
678 temp.chipshift += 1;
679 break;
680 case 4:
681 temp.chipshift += 2;
682 break;
683 }
684
685 /* Find out if there are any more chips in the map. */
686 for (base = (1 << temp.chipshift);
687 base < map->size;
688 base += (1 << temp.chipshift)) {
689 int numchips = temp.numchips;
690 table_pos[numchips] = probe_new_chip(mtd, base, chips,
691 &temp, table, ARRAY_SIZE(table));
692 }
693
694 mtd->eraseregions = kmalloc(sizeof(struct mtd_erase_region_info) *
695 mtd->numeraseregions, GFP_KERNEL);
696 if (!mtd->eraseregions) {
697 printk(KERN_WARNING "%s: Failed to allocate "
698 "memory for MTD erase region info\n", map->name);
699 kfree(mtd);
700 map->fldrv_priv = NULL;
701 return NULL;
702 }
703
704 reg_idx = 0;
705 offset = 0;
706 for (i = 0; i < temp.numchips; i++) {
707 int dev_size;
708 int j;
709
710 dev_size = 0;
711 for (j = 0; j < table[table_pos[i]].numeraseregions; j++) {
712 mtd->eraseregions[reg_idx].offset = offset +
713 (table[table_pos[i]].regions[j].offset *
714 temp.interleave);
715 mtd->eraseregions[reg_idx].erasesize =
716 table[table_pos[i]].regions[j].erasesize *
717 temp.interleave;
718 mtd->eraseregions[reg_idx].numblocks =
719 table[table_pos[i]].regions[j].numblocks;
720 if (mtd->erasesize <
721 mtd->eraseregions[reg_idx].erasesize) {
722 mtd->erasesize =
723 mtd->eraseregions[reg_idx].erasesize;
724 }
725 dev_size += mtd->eraseregions[reg_idx].erasesize *
726 mtd->eraseregions[reg_idx].numblocks;
727 reg_idx++;
728 }
729 offset += dev_size;
730 }
731 mtd->type = MTD_NORFLASH;
732 mtd->writesize = 1;
733 mtd->flags = MTD_CAP_NORFLASH;
734 mtd->name = map->name;
735 mtd->erase = amd_flash_erase;
736 mtd->read = amd_flash_read;
737 mtd->write = amd_flash_write;
738 mtd->sync = amd_flash_sync;
739 mtd->suspend = amd_flash_suspend;
740 mtd->resume = amd_flash_resume;
741 mtd->lock = amd_flash_lock;
742 mtd->unlock = amd_flash_unlock;
743
744 private = kmalloc(sizeof(*private) + (sizeof(struct flchip) *
745 temp.numchips), GFP_KERNEL);
746 if (!private) {
747 printk(KERN_WARNING
748 "%s: kmalloc failed for private structure\n", map->name);
749 kfree(mtd);
750 map->fldrv_priv = NULL;
751 return NULL;
752 }
753 memcpy(private, &temp, sizeof(temp));
754 memcpy(private->chips, chips,
755 sizeof(struct flchip) * private->numchips);
756 for (i = 0; i < private->numchips; i++) {
757 init_waitqueue_head(&private->chips[i].wq);
758 spin_lock_init(&private->chips[i]._spinlock);
759 }
760
761 map->fldrv_priv = private;
762
763 map->fldrv = &amd_flash_chipdrv;
764
765 __module_get(THIS_MODULE);
766 return mtd;
767}
768
769
770
771static inline int read_one_chip(struct map_info *map, struct flchip *chip,
772 loff_t adr, size_t len, u_char *buf)
773{
774 DECLARE_WAITQUEUE(wait, current);
775 unsigned long timeo = jiffies + HZ;
776
777retry:
778 spin_lock_bh(chip->mutex);
779
780 if (chip->state != FL_READY){
781 printk(KERN_INFO "%s: waiting for chip to read, state = %d\n",
782 map->name, chip->state);
783 set_current_state(TASK_UNINTERRUPTIBLE);
784 add_wait_queue(&chip->wq, &wait);
785
786 spin_unlock_bh(chip->mutex);
787
788 schedule();
789 remove_wait_queue(&chip->wq, &wait);
790
791 if(signal_pending(current)) {
792 return -EINTR;
793 }
794
795 timeo = jiffies + HZ;
796
797 goto retry;
798 }
799
800 adr += chip->start;
801
802 chip->state = FL_READY;
803
804 map_copy_from(map, buf, adr, len);
805
806 wake_up(&chip->wq);
807 spin_unlock_bh(chip->mutex);
808
809 return 0;
810}
811
812
813
814static int amd_flash_read(struct mtd_info *mtd, loff_t from, size_t len,
815 size_t *retlen, u_char *buf)
816{
817 struct map_info *map = mtd->priv;
818 struct amd_flash_private *private = map->fldrv_priv;
819 unsigned long ofs;
820 int chipnum;
821 int ret = 0;
822
823 if ((from + len) > mtd->size) {
824 printk(KERN_WARNING "%s: read request past end of device "
825 "(0x%lx)\n", map->name, (unsigned long)from + len);
826
827 return -EINVAL;
828 }
829
830 /* Offset within the first chip that the first read should start. */
831 chipnum = (from >> private->chipshift);
832 ofs = from - (chipnum << private->chipshift);
833
834 *retlen = 0;
835
836 while (len) {
837 unsigned long this_len;
838
839 if (chipnum >= private->numchips) {
840 break;
841 }
842
843 if ((len + ofs - 1) >> private->chipshift) {
844 this_len = (1 << private->chipshift) - ofs;
845 } else {
846 this_len = len;
847 }
848
849 ret = read_one_chip(map, &private->chips[chipnum], ofs,
850 this_len, buf);
851 if (ret) {
852 break;
853 }
854
855 *retlen += this_len;
856 len -= this_len;
857 buf += this_len;
858
859 ofs = 0;
860 chipnum++;
861 }
862
863 return ret;
864}
865
866
867
868static int write_one_word(struct map_info *map, struct flchip *chip,
869 unsigned long adr, __u32 datum)
870{
871 unsigned long timeo = jiffies + HZ;
872 struct amd_flash_private *private = map->fldrv_priv;
873 DECLARE_WAITQUEUE(wait, current);
874 int ret = 0;
875 int times_left;
876
877retry:
878 spin_lock_bh(chip->mutex);
879
880 if (chip->state != FL_READY){
881 printk("%s: waiting for chip to write, state = %d\n",
882 map->name, chip->state);
883 set_current_state(TASK_UNINTERRUPTIBLE);
884 add_wait_queue(&chip->wq, &wait);
885
886 spin_unlock_bh(chip->mutex);
887
888 schedule();
889 remove_wait_queue(&chip->wq, &wait);
890 printk(KERN_INFO "%s: woke up to write\n", map->name);
891 if(signal_pending(current))
892 return -EINTR;
893
894 timeo = jiffies + HZ;
895
896 goto retry;
897 }
898
899 chip->state = FL_WRITING;
900
901 adr += chip->start;
902 ENABLE_VPP(map);
903 send_cmd(map, chip->start, CMD_PROGRAM_UNLOCK_DATA);
904 wide_write(map, datum, adr);
905
906 times_left = 500000;
907 while (times_left-- && flash_is_busy(map, adr, private->interleave)) {
908 if (need_resched()) {
909 spin_unlock_bh(chip->mutex);
910 schedule();
911 spin_lock_bh(chip->mutex);
912 }
913 }
914
915 if (!times_left) {
916 printk(KERN_WARNING "%s: write to 0x%lx timed out!\n",
917 map->name, adr);
918 ret = -EIO;
919 } else {
920 __u32 verify;
921 if ((verify = wide_read(map, adr)) != datum) {
922 printk(KERN_WARNING "%s: write to 0x%lx failed. "
923 "datum = %x, verify = %x\n",
924 map->name, adr, datum, verify);
925 ret = -EIO;
926 }
927 }
928
929 DISABLE_VPP(map);
930 chip->state = FL_READY;
931 wake_up(&chip->wq);
932 spin_unlock_bh(chip->mutex);
933
934 return ret;
935}
936
937
938
939static int amd_flash_write(struct mtd_info *mtd, loff_t to , size_t len,
940 size_t *retlen, const u_char *buf)
941{
942 struct map_info *map = mtd->priv;
943 struct amd_flash_private *private = map->fldrv_priv;
944 int ret = 0;
945 int chipnum;
946 unsigned long ofs;
947 unsigned long chipstart;
948
949 *retlen = 0;
950 if (!len) {
951 return 0;
952 }
953
954 chipnum = to >> private->chipshift;
955 ofs = to - (chipnum << private->chipshift);
956 chipstart = private->chips[chipnum].start;
957
958 /* If it's not bus-aligned, do the first byte write. */
959 if (ofs & (map->buswidth - 1)) {
960 unsigned long bus_ofs = ofs & ~(map->buswidth - 1);
961 int i = ofs - bus_ofs;
962 int n = 0;
963 u_char tmp_buf[4];
964 __u32 datum;
965
966 map_copy_from(map, tmp_buf,
967 bus_ofs + private->chips[chipnum].start,
968 map->buswidth);
969 while (len && i < map->buswidth)
970 tmp_buf[i++] = buf[n++], len--;
971
972 if (map->buswidth == 2) {
973 datum = *(__u16*)tmp_buf;
974 } else if (map->buswidth == 4) {
975 datum = *(__u32*)tmp_buf;
976 } else {
977 return -EINVAL; /* should never happen, but be safe */
978 }
979
980 ret = write_one_word(map, &private->chips[chipnum], bus_ofs,
981 datum);
982 if (ret) {
983 return ret;
984 }
985
986 ofs += n;
987 buf += n;
988 (*retlen) += n;
989
990 if (ofs >> private->chipshift) {
991 chipnum++;
992 ofs = 0;
993 if (chipnum == private->numchips) {
994 return 0;
995 }
996 }
997 }
998
999 /* We are now aligned, write as much as possible. */
1000 while(len >= map->buswidth) {
1001 __u32 datum;
1002
1003 if (map->buswidth == 1) {
1004 datum = *(__u8*)buf;
1005 } else if (map->buswidth == 2) {
1006 datum = *(__u16*)buf;
1007 } else if (map->buswidth == 4) {
1008 datum = *(__u32*)buf;
1009 } else {
1010 return -EINVAL;
1011 }
1012
1013 ret = write_one_word(map, &private->chips[chipnum], ofs, datum);
1014
1015 if (ret) {
1016 return ret;
1017 }
1018
1019 ofs += map->buswidth;
1020 buf += map->buswidth;
1021 (*retlen) += map->buswidth;
1022 len -= map->buswidth;
1023
1024 if (ofs >> private->chipshift) {
1025 chipnum++;
1026 ofs = 0;
1027 if (chipnum == private->numchips) {
1028 return 0;
1029 }
1030 chipstart = private->chips[chipnum].start;
1031 }
1032 }
1033
1034 if (len & (map->buswidth - 1)) {
1035 int i = 0, n = 0;
1036 u_char tmp_buf[2];
1037 __u32 datum;
1038
1039 map_copy_from(map, tmp_buf,
1040 ofs + private->chips[chipnum].start,
1041 map->buswidth);
1042 while (len--) {
1043 tmp_buf[i++] = buf[n++];
1044 }
1045
1046 if (map->buswidth == 2) {
1047 datum = *(__u16*)tmp_buf;
1048 } else if (map->buswidth == 4) {
1049 datum = *(__u32*)tmp_buf;
1050 } else {
1051 return -EINVAL; /* should never happen, but be safe */
1052 }
1053
1054 ret = write_one_word(map, &private->chips[chipnum], ofs, datum);
1055
1056 if (ret) {
1057 return ret;
1058 }
1059
1060 (*retlen) += n;
1061 }
1062
1063 return 0;
1064}
1065
1066
1067
1068static inline int erase_one_block(struct map_info *map, struct flchip *chip,
1069 unsigned long adr, u_long size)
1070{
1071 unsigned long timeo = jiffies + HZ;
1072 struct amd_flash_private *private = map->fldrv_priv;
1073 DECLARE_WAITQUEUE(wait, current);
1074
1075retry:
1076 spin_lock_bh(chip->mutex);
1077
1078 if (chip->state != FL_READY){
1079 set_current_state(TASK_UNINTERRUPTIBLE);
1080 add_wait_queue(&chip->wq, &wait);
1081
1082 spin_unlock_bh(chip->mutex);
1083
1084 schedule();
1085 remove_wait_queue(&chip->wq, &wait);
1086
1087 if (signal_pending(current)) {
1088 return -EINTR;
1089 }
1090
1091 timeo = jiffies + HZ;
1092
1093 goto retry;
1094 }
1095
1096 chip->state = FL_ERASING;
1097
1098 adr += chip->start;
1099 ENABLE_VPP(map);
1100 send_cmd(map, chip->start, CMD_SECTOR_ERASE_UNLOCK_DATA);
1101 send_cmd_to_addr(map, chip->start, CMD_SECTOR_ERASE_UNLOCK_DATA_2, adr);
1102
1103 timeo = jiffies + (HZ * 20);
1104
1105 spin_unlock_bh(chip->mutex);
1106 msleep(1000);
1107 spin_lock_bh(chip->mutex);
1108
1109 while (flash_is_busy(map, adr, private->interleave)) {
1110
1111 if (chip->state != FL_ERASING) {
1112 /* Someone's suspended the erase. Sleep */
1113 set_current_state(TASK_UNINTERRUPTIBLE);
1114 add_wait_queue(&chip->wq, &wait);
1115
1116 spin_unlock_bh(chip->mutex);
1117 printk(KERN_INFO "%s: erase suspended. Sleeping\n",
1118 map->name);
1119 schedule();
1120 remove_wait_queue(&chip->wq, &wait);
1121
1122 if (signal_pending(current)) {
1123 return -EINTR;
1124 }
1125
1126 timeo = jiffies + (HZ*2); /* FIXME */
1127 spin_lock_bh(chip->mutex);
1128 continue;
1129 }
1130
1131 /* OK Still waiting */
1132 if (time_after(jiffies, timeo)) {
1133 chip->state = FL_READY;
1134 spin_unlock_bh(chip->mutex);
1135 printk(KERN_WARNING "%s: waiting for erase to complete "
1136 "timed out.\n", map->name);
1137 DISABLE_VPP(map);
1138
1139 return -EIO;
1140 }
1141
1142 /* Latency issues. Drop the lock, wait a while and retry */
1143 spin_unlock_bh(chip->mutex);
1144
1145 if (need_resched())
1146 schedule();
1147 else
1148 udelay(1);
1149
1150 spin_lock_bh(chip->mutex);
1151 }
1152
1153 /* Verify every single word */
1154 {
1155 int address;
1156 int error = 0;
1157 __u8 verify;
1158
1159 for (address = adr; address < (adr + size); address++) {
1160 if ((verify = map_read8(map, address)) != 0xFF) {
1161 error = 1;
1162 break;
1163 }
1164 }
1165 if (error) {
1166 chip->state = FL_READY;
1167 spin_unlock_bh(chip->mutex);
1168 printk(KERN_WARNING
1169 "%s: verify error at 0x%x, size %ld.\n",
1170 map->name, address, size);
1171 DISABLE_VPP(map);
1172
1173 return -EIO;
1174 }
1175 }
1176
1177 DISABLE_VPP(map);
1178 chip->state = FL_READY;
1179 wake_up(&chip->wq);
1180 spin_unlock_bh(chip->mutex);
1181
1182 return 0;
1183}
1184
1185
1186
1187static int amd_flash_erase(struct mtd_info *mtd, struct erase_info *instr)
1188{
1189 struct map_info *map = mtd->priv;
1190 struct amd_flash_private *private = map->fldrv_priv;
1191 unsigned long adr, len;
1192 int chipnum;
1193 int ret = 0;
1194 int i;
1195 int first;
1196 struct mtd_erase_region_info *regions = mtd->eraseregions;
1197
1198 if (instr->addr > mtd->size) {
1199 return -EINVAL;
1200 }
1201
1202 if ((instr->len + instr->addr) > mtd->size) {
1203 return -EINVAL;
1204 }
1205
1206 /* Check that both start and end of the requested erase are
1207 * aligned with the erasesize at the appropriate addresses.
1208 */
1209
1210 i = 0;
1211
1212 /* Skip all erase regions which are ended before the start of
1213 the requested erase. Actually, to save on the calculations,
1214 we skip to the first erase region which starts after the
1215 start of the requested erase, and then go back one.
1216 */
1217
1218 while ((i < mtd->numeraseregions) &&
1219 (instr->addr >= regions[i].offset)) {
1220 i++;
1221 }
1222 i--;
1223
1224 /* OK, now i is pointing at the erase region in which this
1225 * erase request starts. Check the start of the requested
1226 * erase range is aligned with the erase size which is in
1227 * effect here.
1228 */
1229
1230 if (instr->addr & (regions[i].erasesize-1)) {
1231 return -EINVAL;
1232 }
1233
1234 /* Remember the erase region we start on. */
1235
1236 first = i;
1237
1238 /* Next, check that the end of the requested erase is aligned
1239 * with the erase region at that address.
1240 */
1241
1242 while ((i < mtd->numeraseregions) &&
1243 ((instr->addr + instr->len) >= regions[i].offset)) {
1244 i++;
1245 }
1246
1247 /* As before, drop back one to point at the region in which
1248 * the address actually falls.
1249 */
1250
1251 i--;
1252
1253 if ((instr->addr + instr->len) & (regions[i].erasesize-1)) {
1254 return -EINVAL;
1255 }
1256
1257 chipnum = instr->addr >> private->chipshift;
1258 adr = instr->addr - (chipnum << private->chipshift);
1259 len = instr->len;
1260
1261 i = first;
1262
1263 while (len) {
1264 ret = erase_one_block(map, &private->chips[chipnum], adr,
1265 regions[i].erasesize);
1266
1267 if (ret) {
1268 return ret;
1269 }
1270
1271 adr += regions[i].erasesize;
1272 len -= regions[i].erasesize;
1273
1274 if ((adr % (1 << private->chipshift)) ==
1275 ((regions[i].offset + (regions[i].erasesize *
1276 regions[i].numblocks))
1277 % (1 << private->chipshift))) {
1278 i++;
1279 }
1280
1281 if (adr >> private->chipshift) {
1282 adr = 0;
1283 chipnum++;
1284 if (chipnum >= private->numchips) {
1285 break;
1286 }
1287 }
1288 }
1289
1290 instr->state = MTD_ERASE_DONE;
1291 mtd_erase_callback(instr);
1292
1293 return 0;
1294}
1295
1296
1297
1298static void amd_flash_sync(struct mtd_info *mtd)
1299{
1300 struct map_info *map = mtd->priv;
1301 struct amd_flash_private *private = map->fldrv_priv;
1302 int i;
1303 struct flchip *chip;
1304 int ret = 0;
1305 DECLARE_WAITQUEUE(wait, current);
1306
1307 for (i = 0; !ret && (i < private->numchips); i++) {
1308 chip = &private->chips[i];
1309
1310 retry:
1311 spin_lock_bh(chip->mutex);
1312
1313 switch(chip->state) {
1314 case FL_READY:
1315 case FL_STATUS:
1316 case FL_CFI_QUERY:
1317 case FL_JEDEC_QUERY:
1318 chip->oldstate = chip->state;
1319 chip->state = FL_SYNCING;
1320 /* No need to wake_up() on this state change -
1321 * as the whole point is that nobody can do anything
1322 * with the chip now anyway.
1323 */
1324 case FL_SYNCING:
1325 spin_unlock_bh(chip->mutex);
1326 break;
1327
1328 default:
1329 /* Not an idle state */
1330 add_wait_queue(&chip->wq, &wait);
1331
1332 spin_unlock_bh(chip->mutex);
1333
1334 schedule();
1335
1336 remove_wait_queue(&chip->wq, &wait);
1337
1338 goto retry;
1339 }
1340 }
1341
1342 /* Unlock the chips again */
1343 for (i--; i >= 0; i--) {
1344 chip = &private->chips[i];
1345
1346 spin_lock_bh(chip->mutex);
1347
1348 if (chip->state == FL_SYNCING) {
1349 chip->state = chip->oldstate;
1350 wake_up(&chip->wq);
1351 }
1352 spin_unlock_bh(chip->mutex);
1353 }
1354}
1355
1356
1357
1358static int amd_flash_suspend(struct mtd_info *mtd)
1359{
1360printk("amd_flash_suspend(): not implemented!\n");
1361 return -EINVAL;
1362}
1363
1364
1365
1366static void amd_flash_resume(struct mtd_info *mtd)
1367{
1368printk("amd_flash_resume(): not implemented!\n");
1369}
1370
1371
1372
1373static void amd_flash_destroy(struct mtd_info *mtd)
1374{
1375 struct map_info *map = mtd->priv;
1376 struct amd_flash_private *private = map->fldrv_priv;
1377 kfree(private);
1378}
1379
1380int __init amd_flash_init(void)
1381{
1382 register_mtd_chip_driver(&amd_flash_chipdrv);
1383 return 0;
1384}
1385
1386void __exit amd_flash_exit(void)
1387{
1388 unregister_mtd_chip_driver(&amd_flash_chipdrv);
1389}
1390
1391module_init(amd_flash_init);
1392module_exit(amd_flash_exit);
1393
1394MODULE_LICENSE("GPL");
1395MODULE_AUTHOR("Jonas Holmberg <jonas.holmberg@axis.com>");
1396MODULE_DESCRIPTION("Old MTD chip driver for AMD flash chips");
diff --git a/drivers/mtd/chips/jedec.c b/drivers/mtd/chips/jedec.c
deleted file mode 100644
index 14e57b2bf842..000000000000
--- a/drivers/mtd/chips/jedec.c
+++ /dev/null
@@ -1,935 +0,0 @@
1
2/* JEDEC Flash Interface.
3 * This is an older type of interface for self programming flash. It is
4 * commonly use in older AMD chips and is obsolete compared with CFI.
5 * It is called JEDEC because the JEDEC association distributes the ID codes
6 * for the chips.
7 *
8 * See the AMD flash databook for information on how to operate the interface.
9 *
10 * This code does not support anything wider than 8 bit flash chips, I am
11 * not going to guess how to send commands to them, plus I expect they will
12 * all speak CFI..
13 *
14 * $Id: jedec.c,v 1.22 2005/01/05 18:05:11 dwmw2 Exp $
15 */
16
17#include <linux/init.h>
18#include <linux/module.h>
19#include <linux/kernel.h>
20#include <linux/slab.h>
21#include <linux/mtd/jedec.h>
22#include <linux/mtd/map.h>
23#include <linux/mtd/mtd.h>
24#include <linux/mtd/compatmac.h>
25
26static struct mtd_info *jedec_probe(struct map_info *);
27static int jedec_probe8(struct map_info *map,unsigned long base,
28 struct jedec_private *priv);
29static int jedec_probe16(struct map_info *map,unsigned long base,
30 struct jedec_private *priv);
31static int jedec_probe32(struct map_info *map,unsigned long base,
32 struct jedec_private *priv);
33static void jedec_flash_chip_scan(struct jedec_private *priv,unsigned long start,
34 unsigned long len);
35static int flash_erase(struct mtd_info *mtd, struct erase_info *instr);
36static int flash_write(struct mtd_info *mtd, loff_t start, size_t len,
37 size_t *retlen, const u_char *buf);
38
39static unsigned long my_bank_size;
40
41/* Listing of parts and sizes. We need this table to learn the sector
42 size of the chip and the total length */
43static const struct JEDECTable JEDEC_table[] = {
44 {
45 .jedec = 0x013D,
46 .name = "AMD Am29F017D",
47 .size = 2*1024*1024,
48 .sectorsize = 64*1024,
49 .capabilities = MTD_CAP_NORFLASH
50 },
51 {
52 .jedec = 0x01AD,
53 .name = "AMD Am29F016",
54 .size = 2*1024*1024,
55 .sectorsize = 64*1024,
56 .capabilities = MTD_CAP_NORFLASH
57 },
58 {
59 .jedec = 0x01D5,
60 .name = "AMD Am29F080",
61 .size = 1*1024*1024,
62 .sectorsize = 64*1024,
63 .capabilities = MTD_CAP_NORFLASH
64 },
65 {
66 .jedec = 0x01A4,
67 .name = "AMD Am29F040",
68 .size = 512*1024,
69 .sectorsize = 64*1024,
70 .capabilities = MTD_CAP_NORFLASH
71 },
72 {
73 .jedec = 0x20E3,
74 .name = "AMD Am29W040B",
75 .size = 512*1024,
76 .sectorsize = 64*1024,
77 .capabilities = MTD_CAP_NORFLASH
78 },
79 {
80 .jedec = 0xC2AD,
81 .name = "Macronix MX29F016",
82 .size = 2*1024*1024,
83 .sectorsize = 64*1024,
84 .capabilities = MTD_CAP_NORFLASH
85 },
86 { .jedec = 0x0 }
87};
88
89static const struct JEDECTable *jedec_idtoinf(__u8 mfr,__u8 id);
90static void jedec_sync(struct mtd_info *mtd) {};
91static int jedec_read(struct mtd_info *mtd, loff_t from, size_t len,
92 size_t *retlen, u_char *buf);
93static int jedec_read_banked(struct mtd_info *mtd, loff_t from, size_t len,
94 size_t *retlen, u_char *buf);
95
96static struct mtd_info *jedec_probe(struct map_info *map);
97
98
99
100static struct mtd_chip_driver jedec_chipdrv = {
101 .probe = jedec_probe,
102 .name = "jedec",
103 .module = THIS_MODULE
104};
105
106/* Probe entry point */
107
108static struct mtd_info *jedec_probe(struct map_info *map)
109{
110 struct mtd_info *MTD;
111 struct jedec_private *priv;
112 unsigned long Base;
113 unsigned long SectorSize;
114 unsigned count;
115 unsigned I,Uniq;
116 char Part[200];
117 memset(&priv,0,sizeof(priv));
118
119 MTD = kzalloc(sizeof(struct mtd_info) + sizeof(struct jedec_private), GFP_KERNEL);
120 if (!MTD)
121 return NULL;
122
123 priv = (struct jedec_private *)&MTD[1];
124
125 my_bank_size = map->size;
126
127 if (map->size/my_bank_size > MAX_JEDEC_CHIPS)
128 {
129 printk("mtd: Increase MAX_JEDEC_CHIPS, too many banks.\n");
130 kfree(MTD);
131 return NULL;
132 }
133
134 for (Base = 0; Base < map->size; Base += my_bank_size)
135 {
136 // Perhaps zero could designate all tests?
137 if (map->buswidth == 0)
138 map->buswidth = 1;
139
140 if (map->buswidth == 1){
141 if (jedec_probe8(map,Base,priv) == 0) {
142 printk("did recognize jedec chip\n");
143 kfree(MTD);
144 return NULL;
145 }
146 }
147 if (map->buswidth == 2)
148 jedec_probe16(map,Base,priv);
149 if (map->buswidth == 4)
150 jedec_probe32(map,Base,priv);
151 }
152
153 // Get the biggest sector size
154 SectorSize = 0;
155 for (I = 0; priv->chips[I].jedec != 0 && I < MAX_JEDEC_CHIPS; I++)
156 {
157 // printk("priv->chips[%d].jedec is %x\n",I,priv->chips[I].jedec);
158 // printk("priv->chips[%d].sectorsize is %lx\n",I,priv->chips[I].sectorsize);
159 if (priv->chips[I].sectorsize > SectorSize)
160 SectorSize = priv->chips[I].sectorsize;
161 }
162
163 // Quickly ensure that the other sector sizes are factors of the largest
164 for (I = 0; priv->chips[I].jedec != 0 && I < MAX_JEDEC_CHIPS; I++)
165 {
166 if ((SectorSize/priv->chips[I].sectorsize)*priv->chips[I].sectorsize != SectorSize)
167 {
168 printk("mtd: Failed. Device has incompatible mixed sector sizes\n");
169 kfree(MTD);
170 return NULL;
171 }
172 }
173
174 /* Generate a part name that includes the number of different chips and
175 other configuration information */
176 count = 1;
177 strlcpy(Part,map->name,sizeof(Part)-10);
178 strcat(Part," ");
179 Uniq = 0;
180 for (I = 0; priv->chips[I].jedec != 0 && I < MAX_JEDEC_CHIPS; I++)
181 {
182 const struct JEDECTable *JEDEC;
183
184 if (priv->chips[I+1].jedec == priv->chips[I].jedec)
185 {
186 count++;
187 continue;
188 }
189
190 // Locate the chip in the jedec table
191 JEDEC = jedec_idtoinf(priv->chips[I].jedec >> 8,priv->chips[I].jedec);
192 if (JEDEC == 0)
193 {
194 printk("mtd: Internal Error, JEDEC not set\n");
195 kfree(MTD);
196 return NULL;
197 }
198
199 if (Uniq != 0)
200 strcat(Part,",");
201 Uniq++;
202
203 if (count != 1)
204 sprintf(Part+strlen(Part),"%x*[%s]",count,JEDEC->name);
205 else
206 sprintf(Part+strlen(Part),"%s",JEDEC->name);
207 if (strlen(Part) > sizeof(Part)*2/3)
208 break;
209 count = 1;
210 }
211
212 /* Determine if the chips are organized in a linear fashion, or if there
213 are empty banks. Note, the last bank does not count here, only the
214 first banks are important. Holes on non-bank boundaries can not exist
215 due to the way the detection algorithm works. */
216 if (priv->size < my_bank_size)
217 my_bank_size = priv->size;
218 priv->is_banked = 0;
219 //printk("priv->size is %x, my_bank_size is %x\n",priv->size,my_bank_size);
220 //printk("priv->bank_fill[0] is %x\n",priv->bank_fill[0]);
221 if (!priv->size) {
222 printk("priv->size is zero\n");
223 kfree(MTD);
224 return NULL;
225 }
226 if (priv->size/my_bank_size) {
227 if (priv->size/my_bank_size == 1) {
228 priv->size = my_bank_size;
229 }
230 else {
231 for (I = 0; I != priv->size/my_bank_size - 1; I++)
232 {
233 if (priv->bank_fill[I] != my_bank_size)
234 priv->is_banked = 1;
235
236 /* This even could be eliminated, but new de-optimized read/write
237 functions have to be written */
238 printk("priv->bank_fill[%d] is %lx, priv->bank_fill[0] is %lx\n",I,priv->bank_fill[I],priv->bank_fill[0]);
239 if (priv->bank_fill[I] != priv->bank_fill[0])
240 {
241 printk("mtd: Failed. Cannot handle unsymmetric banking\n");
242 kfree(MTD);
243 return NULL;
244 }
245 }
246 }
247 }
248 if (priv->is_banked == 1)
249 strcat(Part,", banked");
250
251 // printk("Part: '%s'\n",Part);
252
253 memset(MTD,0,sizeof(*MTD));
254 // strlcpy(MTD->name,Part,sizeof(MTD->name));
255 MTD->name = map->name;
256 MTD->type = MTD_NORFLASH;
257 MTD->flags = MTD_CAP_NORFLASH;
258 MTD->writesize = 1;
259 MTD->erasesize = SectorSize*(map->buswidth);
260 // printk("MTD->erasesize is %x\n",(unsigned int)MTD->erasesize);
261 MTD->size = priv->size;
262 // printk("MTD->size is %x\n",(unsigned int)MTD->size);
263 //MTD->module = THIS_MODULE; // ? Maybe this should be the low level module?
264 MTD->erase = flash_erase;
265 if (priv->is_banked == 1)
266 MTD->read = jedec_read_banked;
267 else
268 MTD->read = jedec_read;
269 MTD->write = flash_write;
270 MTD->sync = jedec_sync;
271 MTD->priv = map;
272 map->fldrv_priv = priv;
273 map->fldrv = &jedec_chipdrv;
274 __module_get(THIS_MODULE);
275 return MTD;
276}
277
278/* Helper for the JEDEC function, JEDEC numbers all have odd parity */
279static int checkparity(u_char C)
280{
281 u_char parity = 0;
282 while (C != 0)
283 {
284 parity ^= C & 1;
285 C >>= 1;
286 }
287
288 return parity == 1;
289}
290
291
292/* Take an array of JEDEC numbers that represent interleved flash chips
293 and process them. Check to make sure they are good JEDEC numbers, look
294 them up and then add them to the chip list */
295static int handle_jedecs(struct map_info *map,__u8 *Mfg,__u8 *Id,unsigned Count,
296 unsigned long base,struct jedec_private *priv)
297{
298 unsigned I,J;
299 unsigned long Size;
300 unsigned long SectorSize;
301 const struct JEDECTable *JEDEC;
302
303 // Test #2 JEDEC numbers exhibit odd parity
304 for (I = 0; I != Count; I++)
305 {
306 if (checkparity(Mfg[I]) == 0 || checkparity(Id[I]) == 0)
307 return 0;
308 }
309
310 // Finally, just make sure all the chip sizes are the same
311 JEDEC = jedec_idtoinf(Mfg[0],Id[0]);
312
313 if (JEDEC == 0)
314 {
315 printk("mtd: Found JEDEC flash chip, but do not have a table entry for %x:%x\n",Mfg[0],Mfg[1]);
316 return 0;
317 }
318
319 Size = JEDEC->size;
320 SectorSize = JEDEC->sectorsize;
321 for (I = 0; I != Count; I++)
322 {
323 JEDEC = jedec_idtoinf(Mfg[0],Id[0]);
324 if (JEDEC == 0)
325 {
326 printk("mtd: Found JEDEC flash chip, but do not have a table entry for %x:%x\n",Mfg[0],Mfg[1]);
327 return 0;
328 }
329
330 if (Size != JEDEC->size || SectorSize != JEDEC->sectorsize)
331 {
332 printk("mtd: Failed. Interleved flash does not have matching characteristics\n");
333 return 0;
334 }
335 }
336
337 // Load the Chips
338 for (I = 0; I != MAX_JEDEC_CHIPS; I++)
339 {
340 if (priv->chips[I].jedec == 0)
341 break;
342 }
343
344 if (I + Count > MAX_JEDEC_CHIPS)
345 {
346 printk("mtd: Device has too many chips. Increase MAX_JEDEC_CHIPS\n");
347 return 0;
348 }
349
350 // Add them to the table
351 for (J = 0; J != Count; J++)
352 {
353 unsigned long Bank;
354
355 JEDEC = jedec_idtoinf(Mfg[J],Id[J]);
356 priv->chips[I].jedec = (Mfg[J] << 8) | Id[J];
357 priv->chips[I].size = JEDEC->size;
358 priv->chips[I].sectorsize = JEDEC->sectorsize;
359 priv->chips[I].base = base + J;
360 priv->chips[I].datashift = J*8;
361 priv->chips[I].capabilities = JEDEC->capabilities;
362 priv->chips[I].offset = priv->size + J;
363
364 // log2 n :|
365 priv->chips[I].addrshift = 0;
366 for (Bank = Count; Bank != 1; Bank >>= 1, priv->chips[I].addrshift++);
367
368 // Determine how filled this bank is.
369 Bank = base & (~(my_bank_size-1));
370 if (priv->bank_fill[Bank/my_bank_size] < base +
371 (JEDEC->size << priv->chips[I].addrshift) - Bank)
372 priv->bank_fill[Bank/my_bank_size] = base + (JEDEC->size << priv->chips[I].addrshift) - Bank;
373 I++;
374 }
375
376 priv->size += priv->chips[I-1].size*Count;
377
378 return priv->chips[I-1].size;
379}
380
381/* Lookup the chip information from the JEDEC ID table. */
382static const struct JEDECTable *jedec_idtoinf(__u8 mfr,__u8 id)
383{
384 __u16 Id = (mfr << 8) | id;
385 unsigned long I = 0;
386 for (I = 0; JEDEC_table[I].jedec != 0; I++)
387 if (JEDEC_table[I].jedec == Id)
388 return JEDEC_table + I;
389 return NULL;
390}
391
392// Look for flash using an 8 bit bus interface
393static int jedec_probe8(struct map_info *map,unsigned long base,
394 struct jedec_private *priv)
395{
396 #define flread(x) map_read8(map,base+x)
397 #define flwrite(v,x) map_write8(map,v,base+x)
398
399 const unsigned long AutoSel1 = 0xAA;
400 const unsigned long AutoSel2 = 0x55;
401 const unsigned long AutoSel3 = 0x90;
402 const unsigned long Reset = 0xF0;
403 __u32 OldVal;
404 __u8 Mfg[1];
405 __u8 Id[1];
406 unsigned I;
407 unsigned long Size;
408
409 // Wait for any write/erase operation to settle
410 OldVal = flread(base);
411 for (I = 0; OldVal != flread(base) && I < 10000; I++)
412 OldVal = flread(base);
413
414 // Reset the chip
415 flwrite(Reset,0x555);
416
417 // Send the sequence
418 flwrite(AutoSel1,0x555);
419 flwrite(AutoSel2,0x2AA);
420 flwrite(AutoSel3,0x555);
421
422 // Get the JEDEC numbers
423 Mfg[0] = flread(0);
424 Id[0] = flread(1);
425 // printk("Mfg is %x, Id is %x\n",Mfg[0],Id[0]);
426
427 Size = handle_jedecs(map,Mfg,Id,1,base,priv);
428 // printk("handle_jedecs Size is %x\n",(unsigned int)Size);
429 if (Size == 0)
430 {
431 flwrite(Reset,0x555);
432 return 0;
433 }
434
435
436 // Reset.
437 flwrite(Reset,0x555);
438
439 return 1;
440
441 #undef flread
442 #undef flwrite
443}
444
445// Look for flash using a 16 bit bus interface (ie 2 8-bit chips)
446static int jedec_probe16(struct map_info *map,unsigned long base,
447 struct jedec_private *priv)
448{
449 return 0;
450}
451
452// Look for flash using a 32 bit bus interface (ie 4 8-bit chips)
453static int jedec_probe32(struct map_info *map,unsigned long base,
454 struct jedec_private *priv)
455{
456 #define flread(x) map_read32(map,base+((x)<<2))
457 #define flwrite(v,x) map_write32(map,v,base+((x)<<2))
458
459 const unsigned long AutoSel1 = 0xAAAAAAAA;
460 const unsigned long AutoSel2 = 0x55555555;
461 const unsigned long AutoSel3 = 0x90909090;
462 const unsigned long Reset = 0xF0F0F0F0;
463 __u32 OldVal;
464 __u8 Mfg[4];
465 __u8 Id[4];
466 unsigned I;
467 unsigned long Size;
468
469 // Wait for any write/erase operation to settle
470 OldVal = flread(base);
471 for (I = 0; OldVal != flread(base) && I < 10000; I++)
472 OldVal = flread(base);
473
474 // Reset the chip
475 flwrite(Reset,0x555);
476
477 // Send the sequence
478 flwrite(AutoSel1,0x555);
479 flwrite(AutoSel2,0x2AA);
480 flwrite(AutoSel3,0x555);
481
482 // Test #1, JEDEC numbers are readable from 0x??00/0x??01
483 if (flread(0) != flread(0x100) ||
484 flread(1) != flread(0x101))
485 {
486 flwrite(Reset,0x555);
487 return 0;
488 }
489
490 // Split up the JEDEC numbers
491 OldVal = flread(0);
492 for (I = 0; I != 4; I++)
493 Mfg[I] = (OldVal >> (I*8));
494 OldVal = flread(1);
495 for (I = 0; I != 4; I++)
496 Id[I] = (OldVal >> (I*8));
497
498 Size = handle_jedecs(map,Mfg,Id,4,base,priv);
499 if (Size == 0)
500 {
501 flwrite(Reset,0x555);
502 return 0;
503 }
504
505 /* Check if there is address wrap around within a single bank, if this
506 returns JEDEC numbers then we assume that it is wrap around. Notice
507 we call this routine with the JEDEC return still enabled, if two or
508 more flashes have a truncated address space the probe test will still
509 work */
510 if (base + (Size<<2)+0x555 < map->size &&
511 base + (Size<<2)+0x555 < (base & (~(my_bank_size-1))) + my_bank_size)
512 {
513 if (flread(base+Size) != flread(base+Size + 0x100) ||
514 flread(base+Size + 1) != flread(base+Size + 0x101))
515 {
516 jedec_probe32(map,base+Size,priv);
517 }
518 }
519
520 // Reset.
521 flwrite(0xF0F0F0F0,0x555);
522
523 return 1;
524
525 #undef flread
526 #undef flwrite
527}
528
529/* Linear read. */
530static int jedec_read(struct mtd_info *mtd, loff_t from, size_t len,
531 size_t *retlen, u_char *buf)
532{
533 struct map_info *map = mtd->priv;
534
535 map_copy_from(map, buf, from, len);
536 *retlen = len;
537 return 0;
538}
539
540/* Banked read. Take special care to jump past the holes in the bank
541 mapping. This version assumes symetry in the holes.. */
542static int jedec_read_banked(struct mtd_info *mtd, loff_t from, size_t len,
543 size_t *retlen, u_char *buf)
544{
545 struct map_info *map = mtd->priv;
546 struct jedec_private *priv = map->fldrv_priv;
547
548 *retlen = 0;
549 while (len > 0)
550 {
551 // Determine what bank and offset into that bank the first byte is
552 unsigned long bank = from & (~(priv->bank_fill[0]-1));
553 unsigned long offset = from & (priv->bank_fill[0]-1);
554 unsigned long get = len;
555 if (priv->bank_fill[0] - offset < len)
556 get = priv->bank_fill[0] - offset;
557
558 bank /= priv->bank_fill[0];
559 map_copy_from(map,buf + *retlen,bank*my_bank_size + offset,get);
560
561 len -= get;
562 *retlen += get;
563 from += get;
564 }
565 return 0;
566}
567
568/* Pass the flags value that the flash return before it re-entered read
569 mode. */
570static void jedec_flash_failed(unsigned char code)
571{
572 /* Bit 5 being high indicates that there was an internal device
573 failure, erasure time limits exceeded or something */
574 if ((code & (1 << 5)) != 0)
575 {
576 printk("mtd: Internal Flash failure\n");
577 return;
578 }
579 printk("mtd: Programming didn't take\n");
580}
581
582/* This uses the erasure function described in the AMD Flash Handbook,
583 it will work for flashes with a fixed sector size only. Flashes with
584 a selection of sector sizes (ie the AMD Am29F800B) will need a different
585 routine. This routine tries to parallize erasing multiple chips/sectors
586 where possible */
587static int flash_erase(struct mtd_info *mtd, struct erase_info *instr)
588{
589 // Does IO to the currently selected chip
590 #define flread(x) map_read8(map,chip->base+((x)<<chip->addrshift))
591 #define flwrite(v,x) map_write8(map,v,chip->base+((x)<<chip->addrshift))
592
593 unsigned long Time = 0;
594 unsigned long NoTime = 0;
595 unsigned long start = instr->addr, len = instr->len;
596 unsigned int I;
597 struct map_info *map = mtd->priv;
598 struct jedec_private *priv = map->fldrv_priv;
599
600 // Verify the arguments..
601 if (start + len > mtd->size ||
602 (start % mtd->erasesize) != 0 ||
603 (len % mtd->erasesize) != 0 ||
604 (len/mtd->erasesize) == 0)
605 return -EINVAL;
606
607 jedec_flash_chip_scan(priv,start,len);
608
609 // Start the erase sequence on each chip
610 for (I = 0; priv->chips[I].jedec != 0 && I < MAX_JEDEC_CHIPS; I++)
611 {
612 unsigned long off;
613 struct jedec_flash_chip *chip = priv->chips + I;
614
615 if (chip->length == 0)
616 continue;
617
618 if (chip->start + chip->length > chip->size)
619 {
620 printk("DIE\n");
621 return -EIO;
622 }
623
624 flwrite(0xF0,chip->start + 0x555);
625 flwrite(0xAA,chip->start + 0x555);
626 flwrite(0x55,chip->start + 0x2AA);
627 flwrite(0x80,chip->start + 0x555);
628 flwrite(0xAA,chip->start + 0x555);
629 flwrite(0x55,chip->start + 0x2AA);
630
631 /* Once we start selecting the erase sectors the delay between each
632 command must not exceed 50us or it will immediately start erasing
633 and ignore the other sectors */
634 for (off = 0; off < len; off += chip->sectorsize)
635 {
636 // Check to make sure we didn't timeout
637 flwrite(0x30,chip->start + off);
638 if (off == 0)
639 continue;
640 if ((flread(chip->start + off) & (1 << 3)) != 0)
641 {
642 printk("mtd: Ack! We timed out the erase timer!\n");
643 return -EIO;
644 }
645 }
646 }
647
648 /* We could split this into a timer routine and return early, performing
649 background erasure.. Maybe later if the need warrents */
650
651 /* Poll the flash for erasure completion, specs say this can take as long
652 as 480 seconds to do all the sectors (for a 2 meg flash).
653 Erasure time is dependent on chip age, temp and wear.. */
654
655 /* This being a generic routine assumes a 32 bit bus. It does read32s
656 and bundles interleved chips into the same grouping. This will work
657 for all bus widths */
658 Time = 0;
659 NoTime = 0;
660 for (I = 0; priv->chips[I].jedec != 0 && I < MAX_JEDEC_CHIPS; I++)
661 {
662 struct jedec_flash_chip *chip = priv->chips + I;
663 unsigned long off = 0;
664 unsigned todo[4] = {0,0,0,0};
665 unsigned todo_left = 0;
666 unsigned J;
667
668 if (chip->length == 0)
669 continue;
670
671 /* Find all chips in this data line, realistically this is all
672 or nothing up to the interleve count */
673 for (J = 0; priv->chips[J].jedec != 0 && J < MAX_JEDEC_CHIPS; J++)
674 {
675 if ((priv->chips[J].base & (~((1<<chip->addrshift)-1))) ==
676 (chip->base & (~((1<<chip->addrshift)-1))))
677 {
678 todo_left++;
679 todo[priv->chips[J].base & ((1<<chip->addrshift)-1)] = 1;
680 }
681 }
682
683 /* printk("todo: %x %x %x %x\n",(short)todo[0],(short)todo[1],
684 (short)todo[2],(short)todo[3]);
685 */
686 while (1)
687 {
688 __u32 Last[4];
689 unsigned long Count = 0;
690
691 /* During erase bit 7 is held low and bit 6 toggles, we watch this,
692 should it stop toggling or go high then the erase is completed,
693 or this is not really flash ;> */
694 switch (map->buswidth) {
695 case 1:
696 Last[0] = map_read8(map,(chip->base >> chip->addrshift) + chip->start + off);
697 Last[1] = map_read8(map,(chip->base >> chip->addrshift) + chip->start + off);
698 Last[2] = map_read8(map,(chip->base >> chip->addrshift) + chip->start + off);
699 break;
700 case 2:
701 Last[0] = map_read16(map,(chip->base >> chip->addrshift) + chip->start + off);
702 Last[1] = map_read16(map,(chip->base >> chip->addrshift) + chip->start + off);
703 Last[2] = map_read16(map,(chip->base >> chip->addrshift) + chip->start + off);
704 break;
705 case 3:
706 Last[0] = map_read32(map,(chip->base >> chip->addrshift) + chip->start + off);
707 Last[1] = map_read32(map,(chip->base >> chip->addrshift) + chip->start + off);
708 Last[2] = map_read32(map,(chip->base >> chip->addrshift) + chip->start + off);
709 break;
710 }
711 Count = 3;
712 while (todo_left != 0)
713 {
714 for (J = 0; J != 4; J++)
715 {
716 __u8 Byte1 = (Last[(Count-1)%4] >> (J*8)) & 0xFF;
717 __u8 Byte2 = (Last[(Count-2)%4] >> (J*8)) & 0xFF;
718 __u8 Byte3 = (Last[(Count-3)%4] >> (J*8)) & 0xFF;
719 if (todo[J] == 0)
720 continue;
721
722 if ((Byte1 & (1 << 7)) == 0 && Byte1 != Byte2)
723 {
724// printk("Check %x %x %x\n",(short)J,(short)Byte1,(short)Byte2);
725 continue;
726 }
727
728 if (Byte1 == Byte2)
729 {
730 jedec_flash_failed(Byte3);
731 return -EIO;
732 }
733
734 todo[J] = 0;
735 todo_left--;
736 }
737
738/* if (NoTime == 0)
739 Time += HZ/10 - schedule_timeout(HZ/10);*/
740 NoTime = 0;
741
742 switch (map->buswidth) {
743 case 1:
744 Last[Count % 4] = map_read8(map,(chip->base >> chip->addrshift) + chip->start + off);
745 break;
746 case 2:
747 Last[Count % 4] = map_read16(map,(chip->base >> chip->addrshift) + chip->start + off);
748 break;
749 case 4:
750 Last[Count % 4] = map_read32(map,(chip->base >> chip->addrshift) + chip->start + off);
751 break;
752 }
753 Count++;
754
755/* // Count time, max of 15s per sector (according to AMD)
756 if (Time > 15*len/mtd->erasesize*HZ)
757 {
758 printk("mtd: Flash Erase Timed out\n");
759 return -EIO;
760 } */
761 }
762
763 // Skip to the next chip if we used chip erase
764 if (chip->length == chip->size)
765 off = chip->size;
766 else
767 off += chip->sectorsize;
768
769 if (off >= chip->length)
770 break;
771 NoTime = 1;
772 }
773
774 for (J = 0; priv->chips[J].jedec != 0 && J < MAX_JEDEC_CHIPS; J++)
775 {
776 if ((priv->chips[J].base & (~((1<<chip->addrshift)-1))) ==
777 (chip->base & (~((1<<chip->addrshift)-1))))
778 priv->chips[J].length = 0;
779 }
780 }
781
782 //printk("done\n");
783 instr->state = MTD_ERASE_DONE;
784 mtd_erase_callback(instr);
785 return 0;
786
787 #undef flread
788 #undef flwrite
789}
790
791/* This is the simple flash writing function. It writes to every byte, in
792 sequence. It takes care of how to properly address the flash if
793 the flash is interleved. It can only be used if all the chips in the
794 array are identical!*/
795static int flash_write(struct mtd_info *mtd, loff_t start, size_t len,
796 size_t *retlen, const u_char *buf)
797{
798 /* Does IO to the currently selected chip. It takes the bank addressing
799 base (which is divisible by the chip size) adds the necessary lower bits
800 of addrshift (interleave index) and then adds the control register index. */
801 #define flread(x) map_read8(map,base+(off&((1<<chip->addrshift)-1))+((x)<<chip->addrshift))
802 #define flwrite(v,x) map_write8(map,v,base+(off&((1<<chip->addrshift)-1))+((x)<<chip->addrshift))
803
804 struct map_info *map = mtd->priv;
805 struct jedec_private *priv = map->fldrv_priv;
806 unsigned long base;
807 unsigned long off;
808 size_t save_len = len;
809
810 if (start + len > mtd->size)
811 return -EIO;
812
813 //printk("Here");
814
815 //printk("flash_write: start is %x, len is %x\n",start,(unsigned long)len);
816 while (len != 0)
817 {
818 struct jedec_flash_chip *chip = priv->chips;
819 unsigned long bank;
820 unsigned long boffset;
821
822 // Compute the base of the flash.
823 off = ((unsigned long)start) % (chip->size << chip->addrshift);
824 base = start - off;
825
826 // Perform banked addressing translation.
827 bank = base & (~(priv->bank_fill[0]-1));
828 boffset = base & (priv->bank_fill[0]-1);
829 bank = (bank/priv->bank_fill[0])*my_bank_size;
830 base = bank + boffset;
831
832 // printk("Flasing %X %X %X\n",base,chip->size,len);
833 // printk("off is %x, compare with %x\n",off,chip->size << chip->addrshift);
834
835 // Loop over this page
836 for (; off != (chip->size << chip->addrshift) && len != 0; start++, len--, off++,buf++)
837 {
838 unsigned char oldbyte = map_read8(map,base+off);
839 unsigned char Last[4];
840 unsigned long Count = 0;
841
842 if (oldbyte == *buf) {
843 // printk("oldbyte and *buf is %x,len is %x\n",oldbyte,len);
844 continue;
845 }
846 if (((~oldbyte) & *buf) != 0)
847 printk("mtd: warn: Trying to set a 0 to a 1\n");
848
849 // Write
850 flwrite(0xAA,0x555);
851 flwrite(0x55,0x2AA);
852 flwrite(0xA0,0x555);
853 map_write8(map,*buf,base + off);
854 Last[0] = map_read8(map,base + off);
855 Last[1] = map_read8(map,base + off);
856 Last[2] = map_read8(map,base + off);
857
858 /* Wait for the flash to finish the operation. We store the last 4
859 status bytes that have been retrieved so we can determine why
860 it failed. The toggle bits keep toggling when there is a
861 failure */
862 for (Count = 3; Last[(Count - 1) % 4] != Last[(Count - 2) % 4] &&
863 Count < 10000; Count++)
864 Last[Count % 4] = map_read8(map,base + off);
865 if (Last[(Count - 1) % 4] != *buf)
866 {
867 jedec_flash_failed(Last[(Count - 3) % 4]);
868 return -EIO;
869 }
870 }
871 }
872 *retlen = save_len;
873 return 0;
874}
875
876/* This is used to enhance the speed of the erase routine,
877 when things are being done to multiple chips it is possible to
878 parallize the operations, particularly full memory erases of multi
879 chip memories benifit */
880static void jedec_flash_chip_scan(struct jedec_private *priv,unsigned long start,
881 unsigned long len)
882{
883 unsigned int I;
884
885 // Zero the records
886 for (I = 0; priv->chips[I].jedec != 0 && I < MAX_JEDEC_CHIPS; I++)
887 priv->chips[I].start = priv->chips[I].length = 0;
888
889 // Intersect the region with each chip
890 for (I = 0; priv->chips[I].jedec != 0 && I < MAX_JEDEC_CHIPS; I++)
891 {
892 struct jedec_flash_chip *chip = priv->chips + I;
893 unsigned long ByteStart;
894 unsigned long ChipEndByte = chip->offset + (chip->size << chip->addrshift);
895
896 // End is before this chip or the start is after it
897 if (start+len < chip->offset ||
898 ChipEndByte - (1 << chip->addrshift) < start)
899 continue;
900
901 if (start < chip->offset)
902 {
903 ByteStart = chip->offset;
904 chip->start = 0;
905 }
906 else
907 {
908 chip->start = (start - chip->offset + (1 << chip->addrshift)-1) >> chip->addrshift;
909 ByteStart = start;
910 }
911
912 if (start + len >= ChipEndByte)
913 chip->length = (ChipEndByte - ByteStart) >> chip->addrshift;
914 else
915 chip->length = (start + len - ByteStart + (1 << chip->addrshift)-1) >> chip->addrshift;
916 }
917}
918
919int __init jedec_init(void)
920{
921 register_mtd_chip_driver(&jedec_chipdrv);
922 return 0;
923}
924
925static void __exit jedec_exit(void)
926{
927 unregister_mtd_chip_driver(&jedec_chipdrv);
928}
929
930module_init(jedec_init);
931module_exit(jedec_exit);
932
933MODULE_LICENSE("GPL");
934MODULE_AUTHOR("Jason Gunthorpe <jgg@deltatee.com> et al.");
935MODULE_DESCRIPTION("Old MTD chip driver for JEDEC-compliant flash chips");
diff --git a/drivers/mtd/chips/sharp.c b/drivers/mtd/chips/sharp.c
deleted file mode 100644
index c9cd3d21ccfa..000000000000
--- a/drivers/mtd/chips/sharp.c
+++ /dev/null
@@ -1,601 +0,0 @@
1/*
2 * MTD chip driver for pre-CFI Sharp flash chips
3 *
4 * Copyright 2000,2001 David A. Schleef <ds@schleef.org>
5 * 2000,2001 Lineo, Inc.
6 *
7 * $Id: sharp.c,v 1.17 2005/11/29 14:28:28 gleixner Exp $
8 *
9 * Devices supported:
10 * LH28F016SCT Symmetrical block flash memory, 2Mx8
11 * LH28F008SCT Symmetrical block flash memory, 1Mx8
12 *
13 * Documentation:
14 * http://www.sharpmeg.com/datasheets/memic/flashcmp/
15 * http://www.sharpmeg.com/datasheets/memic/flashcmp/01symf/16m/016sctl9.pdf
16 * 016sctl9.pdf
17 *
18 * Limitations:
19 * This driver only supports 4x1 arrangement of chips.
20 * Not tested on anything but PowerPC.
21 */
22
23#include <linux/kernel.h>
24#include <linux/module.h>
25#include <linux/types.h>
26#include <linux/sched.h>
27#include <linux/errno.h>
28#include <linux/interrupt.h>
29#include <linux/mtd/map.h>
30#include <linux/mtd/mtd.h>
31#include <linux/mtd/cfi.h>
32#include <linux/delay.h>
33#include <linux/init.h>
34#include <linux/slab.h>
35
36#define CMD_RESET 0xffffffff
37#define CMD_READ_ID 0x90909090
38#define CMD_READ_STATUS 0x70707070
39#define CMD_CLEAR_STATUS 0x50505050
40#define CMD_BLOCK_ERASE_1 0x20202020
41#define CMD_BLOCK_ERASE_2 0xd0d0d0d0
42#define CMD_BYTE_WRITE 0x40404040
43#define CMD_SUSPEND 0xb0b0b0b0
44#define CMD_RESUME 0xd0d0d0d0
45#define CMD_SET_BLOCK_LOCK_1 0x60606060
46#define CMD_SET_BLOCK_LOCK_2 0x01010101
47#define CMD_SET_MASTER_LOCK_1 0x60606060
48#define CMD_SET_MASTER_LOCK_2 0xf1f1f1f1
49#define CMD_CLEAR_BLOCK_LOCKS_1 0x60606060
50#define CMD_CLEAR_BLOCK_LOCKS_2 0xd0d0d0d0
51
52#define SR_READY 0x80808080 // 1 = ready
53#define SR_ERASE_SUSPEND 0x40404040 // 1 = block erase suspended
54#define SR_ERROR_ERASE 0x20202020 // 1 = error in block erase or clear lock bits
55#define SR_ERROR_WRITE 0x10101010 // 1 = error in byte write or set lock bit
56#define SR_VPP 0x08080808 // 1 = Vpp is low
57#define SR_WRITE_SUSPEND 0x04040404 // 1 = byte write suspended
58#define SR_PROTECT 0x02020202 // 1 = lock bit set
59#define SR_RESERVED 0x01010101
60
61#define SR_ERRORS (SR_ERROR_ERASE|SR_ERROR_WRITE|SR_VPP|SR_PROTECT)
62
63/* Configuration options */
64
65#undef AUTOUNLOCK /* automatically unlocks blocks before erasing */
66
67static struct mtd_info *sharp_probe(struct map_info *);
68
69static int sharp_probe_map(struct map_info *map,struct mtd_info *mtd);
70
71static int sharp_read(struct mtd_info *mtd, loff_t from, size_t len,
72 size_t *retlen, u_char *buf);
73static int sharp_write(struct mtd_info *mtd, loff_t from, size_t len,
74 size_t *retlen, const u_char *buf);
75static int sharp_erase(struct mtd_info *mtd, struct erase_info *instr);
76static void sharp_sync(struct mtd_info *mtd);
77static int sharp_suspend(struct mtd_info *mtd);
78static void sharp_resume(struct mtd_info *mtd);
79static void sharp_destroy(struct mtd_info *mtd);
80
81static int sharp_write_oneword(struct map_info *map, struct flchip *chip,
82 unsigned long adr, __u32 datum);
83static int sharp_erase_oneblock(struct map_info *map, struct flchip *chip,
84 unsigned long adr);
85#ifdef AUTOUNLOCK
86static void sharp_unlock_oneblock(struct map_info *map, struct flchip *chip,
87 unsigned long adr);
88#endif
89
90
91struct sharp_info{
92 struct flchip *chip;
93 int bogus;
94 int chipshift;
95 int numchips;
96 struct flchip chips[1];
97};
98
99static void sharp_destroy(struct mtd_info *mtd);
100
101static struct mtd_chip_driver sharp_chipdrv = {
102 .probe = sharp_probe,
103 .destroy = sharp_destroy,
104 .name = "sharp",
105 .module = THIS_MODULE
106};
107
108
109static struct mtd_info *sharp_probe(struct map_info *map)
110{
111 struct mtd_info *mtd = NULL;
112 struct sharp_info *sharp = NULL;
113 int width;
114
115 mtd = kzalloc(sizeof(*mtd), GFP_KERNEL);
116 if(!mtd)
117 return NULL;
118
119 sharp = kzalloc(sizeof(*sharp), GFP_KERNEL);
120 if(!sharp) {
121 kfree(mtd);
122 return NULL;
123 }
124
125 width = sharp_probe_map(map,mtd);
126 if(!width){
127 kfree(mtd);
128 kfree(sharp);
129 return NULL;
130 }
131
132 mtd->priv = map;
133 mtd->type = MTD_NORFLASH;
134 mtd->erase = sharp_erase;
135 mtd->read = sharp_read;
136 mtd->write = sharp_write;
137 mtd->sync = sharp_sync;
138 mtd->suspend = sharp_suspend;
139 mtd->resume = sharp_resume;
140 mtd->flags = MTD_CAP_NORFLASH;
141 mtd->writesize = 1;
142 mtd->name = map->name;
143
144 sharp->chipshift = 23;
145 sharp->numchips = 1;
146 sharp->chips[0].start = 0;
147 sharp->chips[0].state = FL_READY;
148 sharp->chips[0].mutex = &sharp->chips[0]._spinlock;
149 sharp->chips[0].word_write_time = 0;
150 init_waitqueue_head(&sharp->chips[0].wq);
151 spin_lock_init(&sharp->chips[0]._spinlock);
152
153 map->fldrv = &sharp_chipdrv;
154 map->fldrv_priv = sharp;
155
156 __module_get(THIS_MODULE);
157 return mtd;
158}
159
160static inline void sharp_send_cmd(struct map_info *map, unsigned long cmd, unsigned long adr)
161{
162 map_word map_cmd;
163 map_cmd.x[0] = cmd;
164 map_write(map, map_cmd, adr);
165}
166
167static int sharp_probe_map(struct map_info *map,struct mtd_info *mtd)
168{
169 map_word tmp, read0, read4;
170 unsigned long base = 0;
171 int width = 4;
172
173 tmp = map_read(map, base+0);
174
175 sharp_send_cmd(map, CMD_READ_ID, base+0);
176
177 read0 = map_read(map, base+0);
178 read4 = map_read(map, base+4);
179 if(read0.x[0] == 0x89898989){
180 printk("Looks like sharp flash\n");
181 switch(read4.x[0]){
182 case 0xaaaaaaaa:
183 case 0xa0a0a0a0:
184 /* aa - LH28F016SCT-L95 2Mx8, 32 64k blocks*/
185 /* a0 - LH28F016SCT-Z4 2Mx8, 32 64k blocks*/
186 mtd->erasesize = 0x10000 * width;
187 mtd->size = 0x200000 * width;
188 return width;
189 case 0xa6a6a6a6:
190 /* a6 - LH28F008SCT-L12 1Mx8, 16 64k blocks*/
191 /* a6 - LH28F008SCR-L85 1Mx8, 16 64k blocks*/
192 mtd->erasesize = 0x10000 * width;
193 mtd->size = 0x100000 * width;
194 return width;
195#if 0
196 case 0x00000000: /* unknown */
197 /* XX - LH28F004SCT 512kx8, 8 64k blocks*/
198 mtd->erasesize = 0x10000 * width;
199 mtd->size = 0x80000 * width;
200 return width;
201#endif
202 default:
203 printk("Sort-of looks like sharp flash, 0x%08lx 0x%08lx\n",
204 read0.x[0], read4.x[0]);
205 }
206 }else if((map_read(map, base+0).x[0] == CMD_READ_ID)){
207 /* RAM, probably */
208 printk("Looks like RAM\n");
209 map_write(map, tmp, base+0);
210 }else{
211 printk("Doesn't look like sharp flash, 0x%08lx 0x%08lx\n",
212 read0.x[0], read4.x[0]);
213 }
214
215 return 0;
216}
217
218/* This function returns with the chip->mutex lock held. */
219static int sharp_wait(struct map_info *map, struct flchip *chip)
220{
221 int i;
222 map_word status;
223 unsigned long timeo = jiffies + HZ;
224 DECLARE_WAITQUEUE(wait, current);
225 int adr = 0;
226
227retry:
228 spin_lock_bh(chip->mutex);
229
230 switch(chip->state){
231 case FL_READY:
232 sharp_send_cmd(map, CMD_READ_STATUS, adr);
233 chip->state = FL_STATUS;
234 case FL_STATUS:
235 for(i=0;i<100;i++){
236 status = map_read(map, adr);
237 if((status.x[0] & SR_READY)==SR_READY)
238 break;
239 udelay(1);
240 }
241 break;
242 default:
243 printk("Waiting for chip\n");
244
245 set_current_state(TASK_INTERRUPTIBLE);
246 add_wait_queue(&chip->wq, &wait);
247
248 spin_unlock_bh(chip->mutex);
249
250 schedule();
251 remove_wait_queue(&chip->wq, &wait);
252
253 if(signal_pending(current))
254 return -EINTR;
255
256 timeo = jiffies + HZ;
257
258 goto retry;
259 }
260
261 sharp_send_cmd(map, CMD_RESET, adr);
262
263 chip->state = FL_READY;
264
265 return 0;
266}
267
268static void sharp_release(struct flchip *chip)
269{
270 wake_up(&chip->wq);
271 spin_unlock_bh(chip->mutex);
272}
273
274static int sharp_read(struct mtd_info *mtd, loff_t from, size_t len,
275 size_t *retlen, u_char *buf)
276{
277 struct map_info *map = mtd->priv;
278 struct sharp_info *sharp = map->fldrv_priv;
279 int chipnum;
280 int ret = 0;
281 int ofs = 0;
282
283 chipnum = (from >> sharp->chipshift);
284 ofs = from & ((1 << sharp->chipshift)-1);
285
286 *retlen = 0;
287
288 while(len){
289 unsigned long thislen;
290
291 if(chipnum>=sharp->numchips)
292 break;
293
294 thislen = len;
295 if(ofs+thislen >= (1<<sharp->chipshift))
296 thislen = (1<<sharp->chipshift) - ofs;
297
298 ret = sharp_wait(map,&sharp->chips[chipnum]);
299 if(ret<0)
300 break;
301
302 map_copy_from(map,buf,ofs,thislen);
303
304 sharp_release(&sharp->chips[chipnum]);
305
306 *retlen += thislen;
307 len -= thislen;
308 buf += thislen;
309
310 ofs = 0;
311 chipnum++;
312 }
313 return ret;
314}
315
316static int sharp_write(struct mtd_info *mtd, loff_t to, size_t len,
317 size_t *retlen, const u_char *buf)
318{
319 struct map_info *map = mtd->priv;
320 struct sharp_info *sharp = map->fldrv_priv;
321 int ret = 0;
322 int i,j;
323 int chipnum;
324 unsigned long ofs;
325 union { u32 l; unsigned char uc[4]; } tbuf;
326
327 *retlen = 0;
328
329 while(len){
330 tbuf.l = 0xffffffff;
331 chipnum = to >> sharp->chipshift;
332 ofs = to & ((1<<sharp->chipshift)-1);
333
334 j=0;
335 for(i=ofs&3;i<4 && len;i++){
336 tbuf.uc[i] = *buf;
337 buf++;
338 to++;
339 len--;
340 j++;
341 }
342 sharp_write_oneword(map, &sharp->chips[chipnum], ofs&~3, tbuf.l);
343 if(ret<0)
344 return ret;
345 (*retlen)+=j;
346 }
347
348 return 0;
349}
350
351static int sharp_write_oneword(struct map_info *map, struct flchip *chip,
352 unsigned long adr, __u32 datum)
353{
354 int ret;
355 int timeo;
356 int try;
357 int i;
358 map_word data, status;
359
360 status.x[0] = 0;
361 ret = sharp_wait(map,chip);
362
363 for(try=0;try<10;try++){
364 sharp_send_cmd(map, CMD_BYTE_WRITE, adr);
365 /* cpu_to_le32 -> hack to fix the writel be->le conversion */
366 data.x[0] = cpu_to_le32(datum);
367 map_write(map, data, adr);
368
369 chip->state = FL_WRITING;
370
371 timeo = jiffies + (HZ/2);
372
373 sharp_send_cmd(map, CMD_READ_STATUS, adr);
374 for(i=0;i<100;i++){
375 status = map_read(map, adr);
376 if((status.x[0] & SR_READY) == SR_READY)
377 break;
378 }
379 if(i==100){
380 printk("sharp: timed out writing\n");
381 }
382
383 if(!(status.x[0] & SR_ERRORS))
384 break;
385
386 printk("sharp: error writing byte at addr=%08lx status=%08lx\n", adr, status.x[0]);
387
388 sharp_send_cmd(map, CMD_CLEAR_STATUS, adr);
389 }
390 sharp_send_cmd(map, CMD_RESET, adr);
391 chip->state = FL_READY;
392
393 wake_up(&chip->wq);
394 spin_unlock_bh(chip->mutex);
395
396 return 0;
397}
398
399static int sharp_erase(struct mtd_info *mtd, struct erase_info *instr)
400{
401 struct map_info *map = mtd->priv;
402 struct sharp_info *sharp = map->fldrv_priv;
403 unsigned long adr,len;
404 int chipnum, ret=0;
405
406//printk("sharp_erase()\n");
407 if(instr->addr & (mtd->erasesize - 1))
408 return -EINVAL;
409 if(instr->len & (mtd->erasesize - 1))
410 return -EINVAL;
411 if(instr->len + instr->addr > mtd->size)
412 return -EINVAL;
413
414 chipnum = instr->addr >> sharp->chipshift;
415 adr = instr->addr & ((1<<sharp->chipshift)-1);
416 len = instr->len;
417
418 while(len){
419 ret = sharp_erase_oneblock(map, &sharp->chips[chipnum], adr);
420 if(ret)return ret;
421
422 adr += mtd->erasesize;
423 len -= mtd->erasesize;
424 if(adr >> sharp->chipshift){
425 adr = 0;
426 chipnum++;
427 if(chipnum>=sharp->numchips)
428 break;
429 }
430 }
431
432 instr->state = MTD_ERASE_DONE;
433 mtd_erase_callback(instr);
434
435 return 0;
436}
437
438static int sharp_do_wait_for_ready(struct map_info *map, struct flchip *chip,
439 unsigned long adr)
440{
441 int ret;
442 unsigned long timeo;
443 map_word status;
444 DECLARE_WAITQUEUE(wait, current);
445
446 sharp_send_cmd(map, CMD_READ_STATUS, adr);
447 status = map_read(map, adr);
448
449 timeo = jiffies + HZ;
450
451 while(time_before(jiffies, timeo)){
452 sharp_send_cmd(map, CMD_READ_STATUS, adr);
453 status = map_read(map, adr);
454 if((status.x[0] & SR_READY)==SR_READY){
455 ret = 0;
456 goto out;
457 }
458 set_current_state(TASK_INTERRUPTIBLE);
459 add_wait_queue(&chip->wq, &wait);
460
461 //spin_unlock_bh(chip->mutex);
462
463 schedule_timeout(1);
464 schedule();
465 remove_wait_queue(&chip->wq, &wait);
466
467 //spin_lock_bh(chip->mutex);
468
469 if (signal_pending(current)){
470 ret = -EINTR;
471 goto out;
472 }
473
474 }
475 ret = -ETIME;
476out:
477 return ret;
478}
479
480static int sharp_erase_oneblock(struct map_info *map, struct flchip *chip,
481 unsigned long adr)
482{
483 int ret;
484 //int timeo;
485 map_word status;
486 //int i;
487
488//printk("sharp_erase_oneblock()\n");
489
490#ifdef AUTOUNLOCK
491 /* This seems like a good place to do an unlock */
492 sharp_unlock_oneblock(map,chip,adr);
493#endif
494
495 sharp_send_cmd(map, CMD_BLOCK_ERASE_1, adr);
496 sharp_send_cmd(map, CMD_BLOCK_ERASE_2, adr);
497
498 chip->state = FL_ERASING;
499
500 ret = sharp_do_wait_for_ready(map,chip,adr);
501 if(ret<0)return ret;
502
503 sharp_send_cmd(map, CMD_READ_STATUS, adr);
504 status = map_read(map, adr);
505
506 if(!(status.x[0] & SR_ERRORS)){
507 sharp_send_cmd(map, CMD_RESET, adr);
508 chip->state = FL_READY;
509 //spin_unlock_bh(chip->mutex);
510 return 0;
511 }
512
513 printk("sharp: error erasing block at addr=%08lx status=%08lx\n", adr, status.x[0]);
514 sharp_send_cmd(map, CMD_CLEAR_STATUS, adr);
515
516 //spin_unlock_bh(chip->mutex);
517
518 return -EIO;
519}
520
521#ifdef AUTOUNLOCK
522static void sharp_unlock_oneblock(struct map_info *map, struct flchip *chip,
523 unsigned long adr)
524{
525 int i;
526 map_word status;
527
528 sharp_send_cmd(map, CMD_CLEAR_BLOCK_LOCKS_1, adr);
529 sharp_send_cmd(map, CMD_CLEAR_BLOCK_LOCKS_2, adr);
530
531 udelay(100);
532
533 status = map_read(map, adr);
534 printk("status=%08lx\n", status.x[0]);
535
536 for(i=0;i<1000;i++){
537 //sharp_send_cmd(map, CMD_READ_STATUS, adr);
538 status = map_read(map, adr);
539 if((status.x[0] & SR_READY) == SR_READY)
540 break;
541 udelay(100);
542 }
543 if(i==1000){
544 printk("sharp: timed out unlocking block\n");
545 }
546
547 if(!(status.x[0] & SR_ERRORS)){
548 sharp_send_cmd(map, CMD_RESET, adr);
549 chip->state = FL_READY;
550 return;
551 }
552
553 printk("sharp: error unlocking block at addr=%08lx status=%08lx\n", adr, status.x[0]);
554 sharp_send_cmd(map, CMD_CLEAR_STATUS, adr);
555}
556#endif
557
558static void sharp_sync(struct mtd_info *mtd)
559{
560 //printk("sharp_sync()\n");
561}
562
563static int sharp_suspend(struct mtd_info *mtd)
564{
565 printk("sharp_suspend()\n");
566 return -EINVAL;
567}
568
569static void sharp_resume(struct mtd_info *mtd)
570{
571 printk("sharp_resume()\n");
572
573}
574
575static void sharp_destroy(struct mtd_info *mtd)
576{
577 printk("sharp_destroy()\n");
578
579}
580
581static int __init sharp_probe_init(void)
582{
583 printk("MTD Sharp chip driver <ds@lineo.com>\n");
584
585 register_mtd_chip_driver(&sharp_chipdrv);
586
587 return 0;
588}
589
590static void __exit sharp_probe_exit(void)
591{
592 unregister_mtd_chip_driver(&sharp_chipdrv);
593}
594
595module_init(sharp_probe_init);
596module_exit(sharp_probe_exit);
597
598
599MODULE_LICENSE("GPL");
600MODULE_AUTHOR("David Schleef <ds@schleef.org>");
601MODULE_DESCRIPTION("Old MTD chip driver for pre-CFI Sharp flash chips");
diff --git a/drivers/mtd/devices/block2mtd.c b/drivers/mtd/devices/block2mtd.c
index fc4cc8ba9e29..be4b9948c762 100644
--- a/drivers/mtd/devices/block2mtd.c
+++ b/drivers/mtd/devices/block2mtd.c
@@ -373,7 +373,7 @@ static inline void kill_final_newline(char *str)
373 373
374#ifndef MODULE 374#ifndef MODULE
375static int block2mtd_init_called = 0; 375static int block2mtd_init_called = 0;
376static __initdata char block2mtd_paramline[80 + 12]; /* 80 for device, 12 for erase size */ 376static char block2mtd_paramline[80 + 12]; /* 80 for device, 12 for erase size */
377#endif 377#endif
378 378
379 379
diff --git a/drivers/mtd/maps/Kconfig b/drivers/mtd/maps/Kconfig
index 5fcd8b3631ba..b665e4ac2208 100644
--- a/drivers/mtd/maps/Kconfig
+++ b/drivers/mtd/maps/Kconfig
@@ -358,22 +358,6 @@ config MTD_CFI_FLAGADM
358 Mapping for the Flaga digital module. If you don't have one, ignore 358 Mapping for the Flaga digital module. If you don't have one, ignore
359 this setting. 359 this setting.
360 360
361config MTD_BEECH
362 tristate "CFI Flash device mapped on IBM 405LP Beech"
363 depends on MTD_CFI && BEECH
364 help
365 This enables access routines for the flash chips on the IBM
366 405LP Beech board. If you have one of these boards and would like
367 to use the flash chips on it, say 'Y'.
368
369config MTD_ARCTIC
370 tristate "CFI Flash device mapped on IBM 405LP Arctic"
371 depends on MTD_CFI && ARCTIC2
372 help
373 This enables access routines for the flash chips on the IBM 405LP
374 Arctic board. If you have one of these boards and would like to
375 use the flash chips on it, say 'Y'.
376
377config MTD_WALNUT 361config MTD_WALNUT
378 tristate "Flash device mapped on IBM 405GP Walnut" 362 tristate "Flash device mapped on IBM 405GP Walnut"
379 depends on MTD_JEDECPROBE && WALNUT 363 depends on MTD_JEDECPROBE && WALNUT
diff --git a/drivers/mtd/maps/Makefile b/drivers/mtd/maps/Makefile
index de036c5e6139..3acbb5d01ca4 100644
--- a/drivers/mtd/maps/Makefile
+++ b/drivers/mtd/maps/Makefile
@@ -58,8 +58,6 @@ obj-$(CONFIG_MTD_NETtel) += nettel.o
58obj-$(CONFIG_MTD_SCB2_FLASH) += scb2_flash.o 58obj-$(CONFIG_MTD_SCB2_FLASH) += scb2_flash.o
59obj-$(CONFIG_MTD_EBONY) += ebony.o 59obj-$(CONFIG_MTD_EBONY) += ebony.o
60obj-$(CONFIG_MTD_OCOTEA) += ocotea.o 60obj-$(CONFIG_MTD_OCOTEA) += ocotea.o
61obj-$(CONFIG_MTD_BEECH) += beech-mtd.o
62obj-$(CONFIG_MTD_ARCTIC) += arctic-mtd.o
63obj-$(CONFIG_MTD_WALNUT) += walnut.o 61obj-$(CONFIG_MTD_WALNUT) += walnut.o
64obj-$(CONFIG_MTD_H720X) += h720x-flash.o 62obj-$(CONFIG_MTD_H720X) += h720x-flash.o
65obj-$(CONFIG_MTD_SBC8240) += sbc8240.o 63obj-$(CONFIG_MTD_SBC8240) += sbc8240.o
diff --git a/drivers/mtd/maps/arctic-mtd.c b/drivers/mtd/maps/arctic-mtd.c
deleted file mode 100644
index 2cc902436275..000000000000
--- a/drivers/mtd/maps/arctic-mtd.c
+++ /dev/null
@@ -1,145 +0,0 @@
1/*
2 * $Id: arctic-mtd.c,v 1.14 2005/11/07 11:14:26 gleixner Exp $
3 *
4 * drivers/mtd/maps/arctic-mtd.c MTD mappings and partition tables for
5 * IBM 405LP Arctic boards.
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 *
21 * Copyright (C) 2002, International Business Machines Corporation
22 * All Rights Reserved.
23 *
24 * Bishop Brock
25 * IBM Research, Austin Center for Low-Power Computing
26 * bcbrock@us.ibm.com
27 * March 2002
28 *
29 * modified for Arctic by,
30 * David Gibson
31 * IBM OzLabs, Canberra, Australia
32 * <arctic@gibson.dropbear.id.au>
33 */
34
35#include <linux/kernel.h>
36#include <linux/module.h>
37#include <linux/types.h>
38#include <linux/init.h>
39
40#include <linux/mtd/mtd.h>
41#include <linux/mtd/map.h>
42#include <linux/mtd/partitions.h>
43
44#include <asm/io.h>
45#include <asm/ibm4xx.h>
46
47/*
48 * 0 : 0xFE00 0000 - 0xFEFF FFFF : Filesystem 1 (16MiB)
49 * 1 : 0xFF00 0000 - 0xFF4F FFFF : kernel (5.12MiB)
50 * 2 : 0xFF50 0000 - 0xFFF5 FFFF : Filesystem 2 (10.624MiB) (if non-XIP)
51 * 3 : 0xFFF6 0000 - 0xFFFF FFFF : PIBS Firmware (640KiB)
52 */
53
54#define FFS1_SIZE 0x01000000 /* 16MiB */
55#define KERNEL_SIZE 0x00500000 /* 5.12MiB */
56#define FFS2_SIZE 0x00a60000 /* 10.624MiB */
57#define FIRMWARE_SIZE 0x000a0000 /* 640KiB */
58
59
60#define NAME "Arctic Linux Flash"
61#define PADDR SUBZERO_BOOTFLASH_PADDR
62#define BUSWIDTH 2
63#define SIZE SUBZERO_BOOTFLASH_SIZE
64#define PARTITIONS 4
65
66/* Flash memories on these boards are memory resources, accessed big-endian. */
67
68{
69 /* do nothing for now */
70}
71
72static struct map_info arctic_mtd_map = {
73 .name = NAME,
74 .size = SIZE,
75 .bankwidth = BUSWIDTH,
76 .phys = PADDR,
77};
78
79static struct mtd_info *arctic_mtd;
80
81static struct mtd_partition arctic_partitions[PARTITIONS] = {
82 { .name = "Filesystem",
83 .size = FFS1_SIZE,
84 .offset = 0,},
85 { .name = "Kernel",
86 .size = KERNEL_SIZE,
87 .offset = FFS1_SIZE,},
88 { .name = "Filesystem",
89 .size = FFS2_SIZE,
90 .offset = FFS1_SIZE + KERNEL_SIZE,},
91 { .name = "Firmware",
92 .size = FIRMWARE_SIZE,
93 .offset = SUBZERO_BOOTFLASH_SIZE - FIRMWARE_SIZE,},
94};
95
96static int __init
97init_arctic_mtd(void)
98{
99 int err;
100
101 printk("%s: 0x%08x at 0x%08x\n", NAME, SIZE, PADDR);
102
103 arctic_mtd_map.virt = ioremap(PADDR, SIZE);
104
105 if (!arctic_mtd_map.virt) {
106 printk("%s: failed to ioremap 0x%x\n", NAME, PADDR);
107 return -EIO;
108 }
109 simple_map_init(&arctic_mtd_map);
110
111 printk("%s: probing %d-bit flash bus\n", NAME, BUSWIDTH * 8);
112 arctic_mtd = do_map_probe("cfi_probe", &arctic_mtd_map);
113
114 if (!arctic_mtd) {
115 iounmap(arctic_mtd_map.virt);
116 return -ENXIO;
117 }
118
119 arctic_mtd->owner = THIS_MODULE;
120
121 err = add_mtd_partitions(arctic_mtd, arctic_partitions, PARTITIONS);
122 if (err) {
123 printk("%s: add_mtd_partitions failed\n", NAME);
124 iounmap(arctic_mtd_map.virt);
125 }
126
127 return err;
128}
129
130static void __exit
131cleanup_arctic_mtd(void)
132{
133 if (arctic_mtd) {
134 del_mtd_partitions(arctic_mtd);
135 map_destroy(arctic_mtd);
136 iounmap((void *) arctic_mtd_map.virt);
137 }
138}
139
140module_init(init_arctic_mtd);
141module_exit(cleanup_arctic_mtd);
142
143MODULE_LICENSE("GPL");
144MODULE_AUTHOR("David Gibson <arctic@gibson.dropbear.id.au>");
145MODULE_DESCRIPTION("MTD map and partitions for IBM 405LP Arctic boards");
diff --git a/drivers/mtd/maps/beech-mtd.c b/drivers/mtd/maps/beech-mtd.c
deleted file mode 100644
index d76d5981b863..000000000000
--- a/drivers/mtd/maps/beech-mtd.c
+++ /dev/null
@@ -1,122 +0,0 @@
1/*
2 * $Id: beech-mtd.c,v 1.11 2005/11/07 11:14:26 gleixner Exp $
3 *
4 * drivers/mtd/maps/beech-mtd.c MTD mappings and partition tables for
5 * IBM 405LP Beech boards.
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 *
21 * Copyright (C) 2002, International Business Machines Corporation
22 * All Rights Reserved.
23 *
24 * Bishop Brock
25 * IBM Research, Austin Center for Low-Power Computing
26 * bcbrock@us.ibm.com
27 * March 2002
28 *
29 */
30
31#include <linux/kernel.h>
32#include <linux/module.h>
33#include <linux/types.h>
34#include <linux/init.h>
35
36#include <linux/mtd/mtd.h>
37#include <linux/mtd/map.h>
38#include <linux/mtd/partitions.h>
39
40#include <asm/io.h>
41#include <asm/ibm4xx.h>
42
43#define NAME "Beech Linux Flash"
44#define PADDR BEECH_BIGFLASH_PADDR
45#define SIZE BEECH_BIGFLASH_SIZE
46#define BUSWIDTH 1
47
48/* Flash memories on these boards are memory resources, accessed big-endian. */
49
50
51static struct map_info beech_mtd_map = {
52 .name = NAME,
53 .size = SIZE,
54 .bankwidth = BUSWIDTH,
55 .phys = PADDR
56};
57
58static struct mtd_info *beech_mtd;
59
60static struct mtd_partition beech_partitions[2] = {
61 {
62 .name = "Linux Kernel",
63 .size = BEECH_KERNEL_SIZE,
64 .offset = BEECH_KERNEL_OFFSET
65 }, {
66 .name = "Free Area",
67 .size = BEECH_FREE_AREA_SIZE,
68 .offset = BEECH_FREE_AREA_OFFSET
69 }
70};
71
72static int __init
73init_beech_mtd(void)
74{
75 int err;
76
77 printk("%s: 0x%08x at 0x%08x\n", NAME, SIZE, PADDR);
78
79 beech_mtd_map.virt = ioremap(PADDR, SIZE);
80
81 if (!beech_mtd_map.virt) {
82 printk("%s: failed to ioremap 0x%x\n", NAME, PADDR);
83 return -EIO;
84 }
85
86 simple_map_init(&beech_mtd_map);
87
88 printk("%s: probing %d-bit flash bus\n", NAME, BUSWIDTH * 8);
89 beech_mtd = do_map_probe("cfi_probe", &beech_mtd_map);
90
91 if (!beech_mtd) {
92 iounmap(beech_mtd_map.virt);
93 return -ENXIO;
94 }
95
96 beech_mtd->owner = THIS_MODULE;
97
98 err = add_mtd_partitions(beech_mtd, beech_partitions, 2);
99 if (err) {
100 printk("%s: add_mtd_partitions failed\n", NAME);
101 iounmap(beech_mtd_map.virt);
102 }
103
104 return err;
105}
106
107static void __exit
108cleanup_beech_mtd(void)
109{
110 if (beech_mtd) {
111 del_mtd_partitions(beech_mtd);
112 map_destroy(beech_mtd);
113 iounmap((void *) beech_mtd_map.virt);
114 }
115}
116
117module_init(init_beech_mtd);
118module_exit(cleanup_beech_mtd);
119
120MODULE_LICENSE("GPL");
121MODULE_AUTHOR("Bishop Brock <bcbrock@us.ibm.com>");
122MODULE_DESCRIPTION("MTD map and partitions for IBM 405LP Beech boards");
diff --git a/drivers/mtd/maps/physmap_of.c b/drivers/mtd/maps/physmap_of.c
index 72107dc06d67..bbb42c35b69b 100644
--- a/drivers/mtd/maps/physmap_of.c
+++ b/drivers/mtd/maps/physmap_of.c
@@ -186,7 +186,7 @@ static int __devinit of_physmap_probe(struct of_device *dev, const struct of_dev
186 else { 186 else {
187 if (strcmp(of_probe, "ROM")) 187 if (strcmp(of_probe, "ROM"))
188 dev_dbg(&dev->dev, "map_probe: don't know probe type " 188 dev_dbg(&dev->dev, "map_probe: don't know probe type "
189 "'%s', mapping as rom\n"); 189 "'%s', mapping as rom\n", of_probe);
190 info->mtd = do_map_probe("mtd_rom", &info->map); 190 info->mtd = do_map_probe("mtd_rom", &info->map);
191 } 191 }
192 if (info->mtd == NULL) { 192 if (info->mtd == NULL) {
diff --git a/drivers/mtd/mtdpart.c b/drivers/mtd/mtdpart.c
index 1af989023c66..9c6236852942 100644
--- a/drivers/mtd/mtdpart.c
+++ b/drivers/mtd/mtdpart.c
@@ -347,7 +347,6 @@ int add_mtd_partitions(struct mtd_info *master,
347 slave->mtd.subpage_sft = master->subpage_sft; 347 slave->mtd.subpage_sft = master->subpage_sft;
348 348
349 slave->mtd.name = parts[i].name; 349 slave->mtd.name = parts[i].name;
350 slave->mtd.bank_size = master->bank_size;
351 slave->mtd.owner = master->owner; 350 slave->mtd.owner = master->owner;
352 351
353 slave->mtd.read = part_read; 352 slave->mtd.read = part_read;
diff --git a/drivers/mtd/nand/Kconfig b/drivers/mtd/nand/Kconfig
index d05873b8c155..f1d60b6f048e 100644
--- a/drivers/mtd/nand/Kconfig
+++ b/drivers/mtd/nand/Kconfig
@@ -232,11 +232,13 @@ config MTD_NAND_BASLER_EXCITE
232 will be named "excite_nandflash.ko". 232 will be named "excite_nandflash.ko".
233 233
234config MTD_NAND_CAFE 234config MTD_NAND_CAFE
235 tristate "NAND support for OLPC CAFÉ chip" 235 tristate "NAND support for OLPC CAFÉ chip"
236 depends on PCI 236 depends on PCI
237 help 237 select REED_SOLOMON
238 Use NAND flash attached to the CAFÉ chip designed for the $100 238 select REED_SOLOMON_DEC16
239 laptop. 239 help
240 Use NAND flash attached to the CAFÉ chip designed for the $100
241 laptop.
240 242
241config MTD_NAND_CS553X 243config MTD_NAND_CS553X
242 tristate "NAND support for CS5535/CS5536 (AMD Geode companion chip)" 244 tristate "NAND support for CS5535/CS5536 (AMD Geode companion chip)"
@@ -270,4 +272,13 @@ config MTD_NAND_NANDSIM
270 The simulator may simulate various NAND flash chips for the 272 The simulator may simulate various NAND flash chips for the
271 MTD nand layer. 273 MTD nand layer.
272 274
275config MTD_NAND_PLATFORM
276 tristate "Support for generic platform NAND driver"
277 depends on MTD_NAND
278 help
279 This implements a generic NAND driver for on-SOC platform
280 devices. You will need to provide platform-specific functions
281 via platform_data.
282
283
273endif # MTD_NAND 284endif # MTD_NAND
diff --git a/drivers/mtd/nand/Makefile b/drivers/mtd/nand/Makefile
index 6872031a3fb2..edba1db14bfa 100644
--- a/drivers/mtd/nand/Makefile
+++ b/drivers/mtd/nand/Makefile
@@ -26,6 +26,6 @@ obj-$(CONFIG_MTD_NAND_NDFC) += ndfc.o
26obj-$(CONFIG_MTD_NAND_AT91) += at91_nand.o 26obj-$(CONFIG_MTD_NAND_AT91) += at91_nand.o
27obj-$(CONFIG_MTD_NAND_CM_X270) += cmx270_nand.o 27obj-$(CONFIG_MTD_NAND_CM_X270) += cmx270_nand.o
28obj-$(CONFIG_MTD_NAND_BASLER_EXCITE) += excite_nandflash.o 28obj-$(CONFIG_MTD_NAND_BASLER_EXCITE) += excite_nandflash.o
29obj-$(CONFIG_MTD_NAND_PLATFORM) += plat_nand.o
29 30
30nand-objs := nand_base.o nand_bbt.o 31nand-objs := nand_base.o nand_bbt.o
31cafe_nand-objs := cafe.o cafe_ecc.o
diff --git a/drivers/mtd/nand/at91_nand.c b/drivers/mtd/nand/at91_nand.c
index 14b80cc90a7b..512e999177f7 100644
--- a/drivers/mtd/nand/at91_nand.c
+++ b/drivers/mtd/nand/at91_nand.c
@@ -82,6 +82,10 @@ static void at91_nand_disable(struct at91_nand_host *host)
82 at91_set_gpio_value(host->board->enable_pin, 1); 82 at91_set_gpio_value(host->board->enable_pin, 1);
83} 83}
84 84
85#ifdef CONFIG_MTD_PARTITIONS
86const char *part_probes[] = { "cmdlinepart", NULL };
87#endif
88
85/* 89/*
86 * Probe for the NAND device. 90 * Probe for the NAND device.
87 */ 91 */
@@ -151,6 +155,12 @@ static int __init at91_nand_probe(struct platform_device *pdev)
151#ifdef CONFIG_MTD_PARTITIONS 155#ifdef CONFIG_MTD_PARTITIONS
152 if (host->board->partition_info) 156 if (host->board->partition_info)
153 partitions = host->board->partition_info(mtd->size, &num_partitions); 157 partitions = host->board->partition_info(mtd->size, &num_partitions);
158#ifdef CONFIG_MTD_CMDLINE_PARTS
159 else {
160 mtd->name = "at91_nand";
161 num_partitions = parse_mtd_partitions(mtd, part_probes, &partitions, 0);
162 }
163#endif
154 164
155 if ((!partitions) || (num_partitions == 0)) { 165 if ((!partitions) || (num_partitions == 0)) {
156 printk(KERN_ERR "at91_nand: No parititions defined, or unsupported device.\n"); 166 printk(KERN_ERR "at91_nand: No parititions defined, or unsupported device.\n");
diff --git a/drivers/mtd/nand/cafe_ecc.c b/drivers/mtd/nand/cafe_ecc.c
deleted file mode 100644
index ea5c8491d2c5..000000000000
--- a/drivers/mtd/nand/cafe_ecc.c
+++ /dev/null
@@ -1,1381 +0,0 @@
1/* Error correction for CAFÉ NAND controller
2 *
3 * © 2006 Marvell, Inc.
4 * Author: Tom Chiou
5 *
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the Free
8 * Software Foundation; either version 2 of the License, or (at your option)
9 * any later version.
10 *
11 * This program is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
14 * more details.
15 *
16 * You should have received a copy of the GNU General Public License along with
17 * this program; if not, write to the Free Software Foundation, Inc., 59
18 * Temple Place - Suite 330, Boston, MA 02111-1307, USA.
19 */
20
21#include <linux/kernel.h>
22#include <linux/module.h>
23#include <linux/errno.h>
24
25static unsigned short gf4096_mul(unsigned short, unsigned short);
26static unsigned short gf64_mul(unsigned short, unsigned short);
27static unsigned short gf4096_inv(unsigned short);
28static unsigned short err_pos(unsigned short);
29static void find_4bit_err_coefs(unsigned short, unsigned short, unsigned short,
30 unsigned short, unsigned short, unsigned short,
31 unsigned short, unsigned short, unsigned short *);
32static void zero_4x5_col3(unsigned short[4][5]);
33static void zero_4x5_col2(unsigned short[4][5]);
34static void zero_4x5_col1(unsigned short[4][5]);
35static void swap_4x5_rows(unsigned short[4][5], int, int, int);
36static void swap_2x3_rows(unsigned short m[2][3]);
37static void solve_4x5(unsigned short m[4][5], unsigned short *, int *);
38static void sort_coefs(int *, unsigned short *, int);
39static void find_4bit_err_pats(unsigned short, unsigned short, unsigned short,
40 unsigned short, unsigned short, unsigned short,
41 unsigned short, unsigned short, unsigned short *);
42static void find_3bit_err_coefs(unsigned short, unsigned short, unsigned short,
43 unsigned short, unsigned short, unsigned short,
44 unsigned short *);
45static void zero_3x4_col2(unsigned short[3][4]);
46static void zero_3x4_col1(unsigned short[3][4]);
47static void swap_3x4_rows(unsigned short[3][4], int, int, int);
48static void solve_3x4(unsigned short[3][4], unsigned short *, int *);
49static void find_3bit_err_pats(unsigned short, unsigned short, unsigned short,
50 unsigned short, unsigned short, unsigned short,
51 unsigned short *);
52
53static void find_2bit_err_pats(unsigned short, unsigned short, unsigned short,
54 unsigned short, unsigned short *);
55static void find_2x2_soln(unsigned short, unsigned short, unsigned short,
56 unsigned short, unsigned short, unsigned short,
57 unsigned short *);
58static void solve_2x3(unsigned short[2][3], unsigned short *);
59static int chk_no_err_only(unsigned short *, unsigned short *);
60static int chk_1_err_only(unsigned short *, unsigned short *);
61static int chk_2_err_only(unsigned short *, unsigned short *);
62static int chk_3_err_only(unsigned short *, unsigned short *);
63static int chk_4_err_only(unsigned short *, unsigned short *);
64
65static unsigned short gf64_mul(unsigned short a, unsigned short b)
66{
67 unsigned short tmp1, tmp2, tmp3, tmp4, tmp5;
68 unsigned short c_bit0, c_bit1, c_bit2, c_bit3, c_bit4, c_bit5, c;
69
70 tmp1 = ((a) ^ (a >> 5));
71 tmp2 = ((a >> 4) ^ (a >> 5));
72 tmp3 = ((a >> 3) ^ (a >> 4));
73 tmp4 = ((a >> 2) ^ (a >> 3));
74 tmp5 = ((a >> 1) ^ (a >> 2));
75
76 c_bit0 = ((a & b) ^ ((a >> 5) & (b >> 1)) ^ ((a >> 4) & (b >> 2)) ^
77 ((a >> 3) & (b >> 3)) ^ ((a >> 2) & (b >> 4)) ^ ((a >> 1) & (b >> 5))) & 0x1;
78
79 c_bit1 = (((a >> 1) & b) ^ (tmp1 & (b >> 1)) ^ (tmp2 & (b >> 2)) ^
80 (tmp3 & (b >> 3)) ^ (tmp4 & (b >> 4)) ^ (tmp5 & (b >> 5))) & 0x1;
81
82 c_bit2 = (((a >> 2) & b) ^ ((a >> 1) & (b >> 1)) ^ (tmp1 & (b >> 2)) ^
83 (tmp2 & (b >> 3)) ^ (tmp3 & (b >> 4)) ^ (tmp4 & (b >> 5))) & 0x1;
84
85 c_bit3 = (((a >> 3) & b) ^ ((a >> 2) & (b >> 1)) ^ ((a >> 1) & (b >> 2)) ^
86 (tmp1 & (b >> 3)) ^ (tmp2 & (b >> 4)) ^ (tmp3 & (b >> 5))) & 0x1;
87
88 c_bit4 = (((a >> 4) & b) ^ ((a >> 3) & (b >> 1)) ^ ((a >> 2) & (b >> 2)) ^
89 ((a >> 1) & (b >> 3)) ^ (tmp1 & (b >> 4)) ^ (tmp2 & (b >> 5))) & 0x1;
90
91 c_bit5 = (((a >> 5) & b) ^ ((a >> 4) & (b >> 1)) ^ ((a >> 3) & (b >> 2)) ^
92 ((a >> 2) & (b >> 3)) ^ ((a >> 1) & (b >> 4)) ^ (tmp1 & (b >> 5))) & 0x1;
93
94 c = c_bit0 | (c_bit1 << 1) | (c_bit2 << 2) | (c_bit3 << 3) | (c_bit4 << 4) | (c_bit5 << 5);
95
96 return c;
97}
98
99static unsigned short gf4096_mul(unsigned short a, unsigned short b)
100{
101 unsigned short ah, al, bh, bl, alxah, blxbh, ablh, albl, ahbh, ahbhB, c;
102
103 ah = (a >> 6) & 0x3f;
104 al = a & 0x3f;
105 bh = (b >> 6) & 0x3f;
106 bl = b & 0x3f;
107 alxah = al ^ ah;
108 blxbh = bl ^ bh;
109
110 ablh = gf64_mul(alxah, blxbh);
111 albl = gf64_mul(al, bl);
112 ahbh = gf64_mul(ah, bh);
113
114 ahbhB = ((ahbh & 0x1) << 5) |
115 ((ahbh & 0x20) >> 1) |
116 ((ahbh & 0x10) >> 1) | ((ahbh & 0x8) >> 1) | ((ahbh & 0x4) >> 1) | (((ahbh >> 1) ^ ahbh) & 0x1);
117
118 c = ((ablh ^ albl) << 6) | (ahbhB ^ albl);
119 return c;
120}
121
122static void find_2bit_err_pats(unsigned short s0, unsigned short s1, unsigned short r0, unsigned short r1, unsigned short *pats)
123{
124 find_2x2_soln(0x1, 0x1, r0, r1, s0, s1, pats);
125}
126
127static void find_3bit_err_coefs(unsigned short s0, unsigned short s1,
128 unsigned short s2, unsigned short s3, unsigned short s4, unsigned short s5, unsigned short *coefs)
129{
130 unsigned short m[3][4];
131 int row_order[3];
132
133 row_order[0] = 0;
134 row_order[1] = 1;
135 row_order[2] = 2;
136 m[0][0] = s2;
137 m[0][1] = s1;
138 m[0][2] = s0;
139 m[0][3] = s3;
140 m[1][0] = s3;
141 m[1][1] = s2;
142 m[1][2] = s1;
143 m[1][3] = s4;
144 m[2][0] = s4;
145 m[2][1] = s3;
146 m[2][2] = s2;
147 m[2][3] = s5;
148
149 if (m[0][2] != 0x0) {
150 zero_3x4_col2(m);
151 } else if (m[1][2] != 0x0) {
152 swap_3x4_rows(m, 0, 1, 4);
153 zero_3x4_col2(m);
154 } else if (m[2][2] != 0x0) {
155 swap_3x4_rows(m, 0, 2, 4);
156 zero_3x4_col2(m);
157 } else {
158 printk(KERN_ERR "Error: find_3bit_err_coefs, s0,s1,s2 all zeros!\n");
159 }
160
161 if (m[1][1] != 0x0) {
162 zero_3x4_col1(m);
163 } else if (m[2][1] != 0x0) {
164 swap_3x4_rows(m, 1, 2, 4);
165 zero_3x4_col1(m);
166 } else {
167 printk(KERN_ERR "Error: find_3bit_err_coefs, cannot resolve col 1!\n");
168 }
169
170 /* solve coefs */
171 solve_3x4(m, coefs, row_order);
172}
173
174static void zero_3x4_col2(unsigned short m[3][4])
175{
176 unsigned short minv1, minv2;
177
178 minv1 = gf4096_mul(m[1][2], gf4096_inv(m[0][2]));
179 minv2 = gf4096_mul(m[2][2], gf4096_inv(m[0][2]));
180 m[1][0] = m[1][0] ^ gf4096_mul(m[0][0], minv1);
181 m[1][1] = m[1][1] ^ gf4096_mul(m[0][1], minv1);
182 m[1][3] = m[1][3] ^ gf4096_mul(m[0][3], minv1);
183 m[2][0] = m[2][0] ^ gf4096_mul(m[0][0], minv2);
184 m[2][1] = m[2][1] ^ gf4096_mul(m[0][1], minv2);
185 m[2][3] = m[2][3] ^ gf4096_mul(m[0][3], minv2);
186}
187
188static void zero_3x4_col1(unsigned short m[3][4])
189{
190 unsigned short minv;
191 minv = gf4096_mul(m[2][1], gf4096_inv(m[1][1]));
192 m[2][0] = m[2][0] ^ gf4096_mul(m[1][0], minv);
193 m[2][3] = m[2][3] ^ gf4096_mul(m[1][3], minv);
194}
195
196static void swap_3x4_rows(unsigned short m[3][4], int i, int j, int col_width)
197{
198 unsigned short tmp0;
199 int cnt;
200 for (cnt = 0; cnt < col_width; cnt++) {
201 tmp0 = m[i][cnt];
202 m[i][cnt] = m[j][cnt];
203 m[j][cnt] = tmp0;
204 }
205}
206
207static void solve_3x4(unsigned short m[3][4], unsigned short *coefs, int *row_order)
208{
209 unsigned short tmp[3];
210 tmp[0] = gf4096_mul(m[2][3], gf4096_inv(m[2][0]));
211 tmp[1] = gf4096_mul((gf4096_mul(tmp[0], m[1][0]) ^ m[1][3]), gf4096_inv(m[1][1]));
212 tmp[2] = gf4096_mul((gf4096_mul(tmp[0], m[0][0]) ^ gf4096_mul(tmp[1], m[0][1]) ^ m[0][3]), gf4096_inv(m[0][2]));
213 sort_coefs(row_order, tmp, 3);
214 coefs[0] = tmp[0];
215 coefs[1] = tmp[1];
216 coefs[2] = tmp[2];
217}
218
219static void find_3bit_err_pats(unsigned short s0, unsigned short s1,
220 unsigned short s2, unsigned short r0,
221 unsigned short r1, unsigned short r2,
222 unsigned short *pats)
223{
224 find_2x2_soln(r0 ^ r2, r1 ^ r2,
225 gf4096_mul(r0, r0 ^ r2), gf4096_mul(r1, r1 ^ r2),
226 gf4096_mul(s0, r2) ^ s1, gf4096_mul(s1, r2) ^ s2, pats);
227 pats[2] = s0 ^ pats[0] ^ pats[1];
228}
229
230static void find_4bit_err_coefs(unsigned short s0, unsigned short s1,
231 unsigned short s2, unsigned short s3,
232 unsigned short s4, unsigned short s5,
233 unsigned short s6, unsigned short s7,
234 unsigned short *coefs)
235{
236 unsigned short m[4][5];
237 int row_order[4];
238
239 row_order[0] = 0;
240 row_order[1] = 1;
241 row_order[2] = 2;
242 row_order[3] = 3;
243
244 m[0][0] = s3;
245 m[0][1] = s2;
246 m[0][2] = s1;
247 m[0][3] = s0;
248 m[0][4] = s4;
249 m[1][0] = s4;
250 m[1][1] = s3;
251 m[1][2] = s2;
252 m[1][3] = s1;
253 m[1][4] = s5;
254 m[2][0] = s5;
255 m[2][1] = s4;
256 m[2][2] = s3;
257 m[2][3] = s2;
258 m[2][4] = s6;
259 m[3][0] = s6;
260 m[3][1] = s5;
261 m[3][2] = s4;
262 m[3][3] = s3;
263 m[3][4] = s7;
264
265 if (m[0][3] != 0x0) {
266 zero_4x5_col3(m);
267 } else if (m[1][3] != 0x0) {
268 swap_4x5_rows(m, 0, 1, 5);
269 zero_4x5_col3(m);
270 } else if (m[2][3] != 0x0) {
271 swap_4x5_rows(m, 0, 2, 5);
272 zero_4x5_col3(m);
273 } else if (m[3][3] != 0x0) {
274 swap_4x5_rows(m, 0, 3, 5);
275 zero_4x5_col3(m);
276 } else {
277 printk(KERN_ERR "Error: find_4bit_err_coefs, s0,s1,s2,s3 all zeros!\n");
278 }
279
280 if (m[1][2] != 0x0) {
281 zero_4x5_col2(m);
282 } else if (m[2][2] != 0x0) {
283 swap_4x5_rows(m, 1, 2, 5);
284 zero_4x5_col2(m);
285 } else if (m[3][2] != 0x0) {
286 swap_4x5_rows(m, 1, 3, 5);
287 zero_4x5_col2(m);
288 } else {
289 printk(KERN_ERR "Error: find_4bit_err_coefs, cannot resolve col 2!\n");
290 }
291
292 if (m[2][1] != 0x0) {
293 zero_4x5_col1(m);
294 } else if (m[3][1] != 0x0) {
295 swap_4x5_rows(m, 2, 3, 5);
296 zero_4x5_col1(m);
297 } else {
298 printk(KERN_ERR "Error: find_4bit_err_coefs, cannot resolve col 1!\n");
299 }
300
301 solve_4x5(m, coefs, row_order);
302}
303
304static void zero_4x5_col3(unsigned short m[4][5])
305{
306 unsigned short minv1, minv2, minv3;
307
308 minv1 = gf4096_mul(m[1][3], gf4096_inv(m[0][3]));
309 minv2 = gf4096_mul(m[2][3], gf4096_inv(m[0][3]));
310 minv3 = gf4096_mul(m[3][3], gf4096_inv(m[0][3]));
311
312 m[1][0] = m[1][0] ^ gf4096_mul(m[0][0], minv1);
313 m[1][1] = m[1][1] ^ gf4096_mul(m[0][1], minv1);
314 m[1][2] = m[1][2] ^ gf4096_mul(m[0][2], minv1);
315 m[1][4] = m[1][4] ^ gf4096_mul(m[0][4], minv1);
316 m[2][0] = m[2][0] ^ gf4096_mul(m[0][0], minv2);
317 m[2][1] = m[2][1] ^ gf4096_mul(m[0][1], minv2);
318 m[2][2] = m[2][2] ^ gf4096_mul(m[0][2], minv2);
319 m[2][4] = m[2][4] ^ gf4096_mul(m[0][4], minv2);
320 m[3][0] = m[3][0] ^ gf4096_mul(m[0][0], minv3);
321 m[3][1] = m[3][1] ^ gf4096_mul(m[0][1], minv3);
322 m[3][2] = m[3][2] ^ gf4096_mul(m[0][2], minv3);
323 m[3][4] = m[3][4] ^ gf4096_mul(m[0][4], minv3);
324}
325
326static void zero_4x5_col2(unsigned short m[4][5])
327{
328 unsigned short minv2, minv3;
329
330 minv2 = gf4096_mul(m[2][2], gf4096_inv(m[1][2]));
331 minv3 = gf4096_mul(m[3][2], gf4096_inv(m[1][2]));
332
333 m[2][0] = m[2][0] ^ gf4096_mul(m[1][0], minv2);
334 m[2][1] = m[2][1] ^ gf4096_mul(m[1][1], minv2);
335 m[2][4] = m[2][4] ^ gf4096_mul(m[1][4], minv2);
336 m[3][0] = m[3][0] ^ gf4096_mul(m[1][0], minv3);
337 m[3][1] = m[3][1] ^ gf4096_mul(m[1][1], minv3);
338 m[3][4] = m[3][4] ^ gf4096_mul(m[1][4], minv3);
339}
340
341static void zero_4x5_col1(unsigned short m[4][5])
342{
343 unsigned short minv;
344
345 minv = gf4096_mul(m[3][1], gf4096_inv(m[2][1]));
346
347 m[3][0] = m[3][0] ^ gf4096_mul(m[2][0], minv);
348 m[3][4] = m[3][4] ^ gf4096_mul(m[2][4], minv);
349}
350
351static void swap_4x5_rows(unsigned short m[4][5], int i, int j, int col_width)
352{
353 unsigned short tmp0;
354 int cnt;
355
356 for (cnt = 0; cnt < col_width; cnt++) {
357 tmp0 = m[i][cnt];
358 m[i][cnt] = m[j][cnt];
359 m[j][cnt] = tmp0;
360 }
361}
362
363static void solve_4x5(unsigned short m[4][5], unsigned short *coefs, int *row_order)
364{
365 unsigned short tmp[4];
366
367 tmp[0] = gf4096_mul(m[3][4], gf4096_inv(m[3][0]));
368 tmp[1] = gf4096_mul((gf4096_mul(tmp[0], m[2][0]) ^ m[2][4]), gf4096_inv(m[2][1]));
369 tmp[2] = gf4096_mul((gf4096_mul(tmp[0], m[1][0]) ^ gf4096_mul(tmp[1], m[1][1]) ^ m[1][4]), gf4096_inv(m[1][2]));
370 tmp[3] = gf4096_mul((gf4096_mul(tmp[0], m[0][0]) ^
371 gf4096_mul(tmp[1], m[0][1]) ^ gf4096_mul(tmp[2], m[0][2]) ^ m[0][4]), gf4096_inv(m[0][3]));
372 sort_coefs(row_order, tmp, 4);
373 coefs[0] = tmp[0];
374 coefs[1] = tmp[1];
375 coefs[2] = tmp[2];
376 coefs[3] = tmp[3];
377}
378
379static void sort_coefs(int *order, unsigned short *soln, int len)
380{
381 int cnt, start_cnt, least_ord, least_cnt;
382 unsigned short tmp0;
383 for (start_cnt = 0; start_cnt < len; start_cnt++) {
384 for (cnt = start_cnt; cnt < len; cnt++) {
385 if (cnt == start_cnt) {
386 least_ord = order[cnt];
387 least_cnt = start_cnt;
388 } else {
389 if (least_ord > order[cnt]) {
390 least_ord = order[cnt];
391 least_cnt = cnt;
392 }
393 }
394 }
395 if (least_cnt != start_cnt) {
396 tmp0 = order[least_cnt];
397 order[least_cnt] = order[start_cnt];
398 order[start_cnt] = tmp0;
399 tmp0 = soln[least_cnt];
400 soln[least_cnt] = soln[start_cnt];
401 soln[start_cnt] = tmp0;
402 }
403 }
404}
405
406static void find_4bit_err_pats(unsigned short s0, unsigned short s1,
407 unsigned short s2, unsigned short s3,
408 unsigned short z1, unsigned short z2,
409 unsigned short z3, unsigned short z4,
410 unsigned short *pats)
411{
412 unsigned short z4_z1, z3z4_z3z3, z4_z2, s0z4_s1, z1z4_z1z1,
413 z4_z3, z2z4_z2z2, s1z4_s2, z3z3z4_z3z3z3, z1z1z4_z1z1z1, z2z2z4_z2z2z2, s2z4_s3;
414 unsigned short tmp0, tmp1, tmp2, tmp3;
415
416 z4_z1 = z4 ^ z1;
417 z3z4_z3z3 = gf4096_mul(z3, z4) ^ gf4096_mul(z3, z3);
418 z4_z2 = z4 ^ z2;
419 s0z4_s1 = gf4096_mul(s0, z4) ^ s1;
420 z1z4_z1z1 = gf4096_mul(z1, z4) ^ gf4096_mul(z1, z1);
421 z4_z3 = z4 ^ z3;
422 z2z4_z2z2 = gf4096_mul(z2, z4) ^ gf4096_mul(z2, z2);
423 s1z4_s2 = gf4096_mul(s1, z4) ^ s2;
424 z3z3z4_z3z3z3 = gf4096_mul(gf4096_mul(z3, z3), z4) ^ gf4096_mul(gf4096_mul(z3, z3), z3);
425 z1z1z4_z1z1z1 = gf4096_mul(gf4096_mul(z1, z1), z4) ^ gf4096_mul(gf4096_mul(z1, z1), z1);
426 z2z2z4_z2z2z2 = gf4096_mul(gf4096_mul(z2, z2), z4) ^ gf4096_mul(gf4096_mul(z2, z2), z2);
427 s2z4_s3 = gf4096_mul(s2, z4) ^ s3;
428
429 //find err pat 0,1
430 find_2x2_soln(gf4096_mul(z4_z1, z3z4_z3z3) ^
431 gf4096_mul(z1z4_z1z1, z4_z3), gf4096_mul(z4_z2,
432 z3z4_z3z3) ^
433 gf4096_mul(z2z4_z2z2, z4_z3), gf4096_mul(z1z4_z1z1,
434 z3z3z4_z3z3z3) ^
435 gf4096_mul(z1z1z4_z1z1z1, z3z4_z3z3),
436 gf4096_mul(z2z4_z2z2,
437 z3z3z4_z3z3z3) ^ gf4096_mul(z2z2z4_z2z2z2,
438 z3z4_z3z3),
439 gf4096_mul(s0z4_s1, z3z4_z3z3) ^ gf4096_mul(s1z4_s2,
440 z4_z3),
441 gf4096_mul(s1z4_s2, z3z3z4_z3z3z3) ^ gf4096_mul(s2z4_s3, z3z4_z3z3), pats);
442 tmp0 = pats[0];
443 tmp1 = pats[1];
444 tmp2 = pats[0] ^ pats[1] ^ s0;
445 tmp3 = gf4096_mul(pats[0], z1) ^ gf4096_mul(pats[1], z2) ^ s1;
446
447 //find err pat 2,3
448 find_2x2_soln(0x1, 0x1, z3, z4, tmp2, tmp3, pats);
449 pats[2] = pats[0];
450 pats[3] = pats[1];
451 pats[0] = tmp0;
452 pats[1] = tmp1;
453}
454
455static void find_2x2_soln(unsigned short c00, unsigned short c01,
456 unsigned short c10, unsigned short c11,
457 unsigned short lval0, unsigned short lval1,
458 unsigned short *soln)
459{
460 unsigned short m[2][3];
461 m[0][0] = c00;
462 m[0][1] = c01;
463 m[0][2] = lval0;
464 m[1][0] = c10;
465 m[1][1] = c11;
466 m[1][2] = lval1;
467
468 if (m[0][1] != 0x0) {
469 /* */
470 } else if (m[1][1] != 0x0) {
471 swap_2x3_rows(m);
472 } else {
473 printk(KERN_ERR "Warning: find_2bit_err_coefs, s0,s1 all zeros!\n");
474 }
475
476 solve_2x3(m, soln);
477}
478
479static void swap_2x3_rows(unsigned short m[2][3])
480{
481 unsigned short tmp0;
482 int cnt;
483
484 for (cnt = 0; cnt < 3; cnt++) {
485 tmp0 = m[0][cnt];
486 m[0][cnt] = m[1][cnt];
487 m[1][cnt] = tmp0;
488 }
489}
490
491static void solve_2x3(unsigned short m[2][3], unsigned short *coefs)
492{
493 unsigned short minv;
494
495 minv = gf4096_mul(m[1][1], gf4096_inv(m[0][1]));
496 m[1][0] = m[1][0] ^ gf4096_mul(m[0][0], minv);
497 m[1][2] = m[1][2] ^ gf4096_mul(m[0][2], minv);
498 coefs[0] = gf4096_mul(m[1][2], gf4096_inv(m[1][0]));
499 coefs[1] = gf4096_mul((gf4096_mul(coefs[0], m[0][0]) ^ m[0][2]), gf4096_inv(m[0][1]));
500}
501
502static unsigned char gf64_inv[64] = {
503 0, 1, 33, 62, 49, 43, 31, 44, 57, 37, 52, 28, 46, 40, 22, 25,
504 61, 54, 51, 39, 26, 35, 14, 24, 23, 15, 20, 34, 11, 53, 45, 6,
505 63, 2, 27, 21, 56, 9, 50, 19, 13, 47, 48, 5, 7, 30, 12, 41,
506 42, 4, 38, 18, 10, 29, 17, 60, 36, 8, 59, 58, 55, 16, 3, 32
507};
508
509static unsigned short gf4096_inv(unsigned short din)
510{
511 unsigned short alahxal, ah2B, deno, inv, bl, bh;
512 unsigned short ah, al, ahxal;
513 unsigned short dout;
514
515 ah = (din >> 6) & 0x3f;
516 al = din & 0x3f;
517 ahxal = ah ^ al;
518 ah2B = (((ah ^ (ah >> 3)) & 0x1) << 5) |
519 ((ah >> 1) & 0x10) |
520 ((((ah >> 5) ^ (ah >> 2)) & 0x1) << 3) |
521 ((ah >> 2) & 0x4) | ((((ah >> 4) ^ (ah >> 1)) & 0x1) << 1) | (ah & 0x1);
522 alahxal = gf64_mul(ahxal, al);
523 deno = alahxal ^ ah2B;
524 inv = gf64_inv[deno];
525 bl = gf64_mul(inv, ahxal);
526 bh = gf64_mul(inv, ah);
527 dout = ((bh & 0x3f) << 6) | (bl & 0x3f);
528 return (((bh & 0x3f) << 6) | (bl & 0x3f));
529}
530
531static unsigned short err_pos_lut[4096] = {
532 0xfff, 0x000, 0x451, 0xfff, 0xfff, 0x3cf, 0xfff, 0x041,
533 0xfff, 0xfff, 0xfff, 0xfff, 0x28a, 0xfff, 0x492, 0xfff,
534 0x145, 0xfff, 0xfff, 0x514, 0xfff, 0x082, 0xfff, 0xfff,
535 0xfff, 0x249, 0x38e, 0x410, 0xfff, 0x104, 0x208, 0x1c7,
536 0xfff, 0xfff, 0xfff, 0xfff, 0x2cb, 0xfff, 0xfff, 0xfff,
537 0x0c3, 0x34d, 0x4d3, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
538 0xfff, 0xfff, 0xfff, 0x186, 0xfff, 0xfff, 0xfff, 0xfff,
539 0xfff, 0x30c, 0x555, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
540 0xfff, 0xfff, 0xfff, 0x166, 0xfff, 0xfff, 0xfff, 0xfff,
541 0x385, 0x14e, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x4e1,
542 0xfff, 0xfff, 0xfff, 0xfff, 0x538, 0xfff, 0x16d, 0xfff,
543 0xfff, 0xfff, 0x45b, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
544 0xfff, 0xfff, 0xfff, 0x29c, 0x2cc, 0x30b, 0x2b3, 0xfff,
545 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x0b3, 0xfff, 0x2f7,
546 0xfff, 0x32b, 0xfff, 0xfff, 0xfff, 0xfff, 0x0a7, 0xfff,
547 0xfff, 0x2da, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
548 0xfff, 0x07e, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
549 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x11c, 0xfff, 0xfff,
550 0xfff, 0xfff, 0xfff, 0x22f, 0xfff, 0x1f4, 0xfff, 0xfff,
551 0x2b0, 0x504, 0xfff, 0x114, 0xfff, 0xfff, 0xfff, 0x21d,
552 0xfff, 0xfff, 0xfff, 0xfff, 0x00d, 0x3c4, 0x340, 0x10f,
553 0xfff, 0xfff, 0x266, 0x02e, 0xfff, 0xfff, 0xfff, 0x4f8,
554 0x337, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
555 0xfff, 0xfff, 0xfff, 0x07b, 0x168, 0xfff, 0xfff, 0x0fe,
556 0xfff, 0xfff, 0x51a, 0xfff, 0x458, 0xfff, 0x36d, 0xfff,
557 0xfff, 0xfff, 0xfff, 0x073, 0x37d, 0x415, 0x550, 0xfff,
558 0xfff, 0xfff, 0x23b, 0x4b4, 0xfff, 0xfff, 0xfff, 0x1a1,
559 0xfff, 0xfff, 0x3aa, 0xfff, 0x117, 0x04d, 0x341, 0xfff,
560 0xfff, 0xfff, 0xfff, 0x518, 0x03e, 0x0f2, 0xfff, 0xfff,
561 0xfff, 0xfff, 0xfff, 0x363, 0xfff, 0x0b9, 0xfff, 0xfff,
562 0x241, 0xfff, 0xfff, 0x049, 0xfff, 0xfff, 0xfff, 0xfff,
563 0x15f, 0x52d, 0xfff, 0xfff, 0xfff, 0x29e, 0xfff, 0xfff,
564 0xfff, 0xfff, 0x4cf, 0x0fc, 0xfff, 0x36f, 0x3d3, 0xfff,
565 0x228, 0xfff, 0xfff, 0x45e, 0xfff, 0xfff, 0xfff, 0xfff,
566 0x238, 0xfff, 0xfff, 0xfff, 0xfff, 0x47f, 0xfff, 0xfff,
567 0x43a, 0x265, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x3e8,
568 0xfff, 0xfff, 0x01a, 0xfff, 0xfff, 0xfff, 0xfff, 0x21e,
569 0x1fc, 0x40b, 0xfff, 0xfff, 0xfff, 0x2d0, 0x159, 0xfff,
570 0xfff, 0x313, 0xfff, 0xfff, 0x05c, 0x4cc, 0xfff, 0xfff,
571 0x0f6, 0x3d5, 0xfff, 0xfff, 0xfff, 0x54f, 0xfff, 0xfff,
572 0xfff, 0x172, 0x1e4, 0x07c, 0xfff, 0xfff, 0xfff, 0xfff,
573 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x53c, 0x1ad, 0x535,
574 0x19b, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
575 0xfff, 0xfff, 0x092, 0xfff, 0x2be, 0xfff, 0xfff, 0x482,
576 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x0e6, 0xfff, 0xfff,
577 0xfff, 0xfff, 0xfff, 0x476, 0xfff, 0x51d, 0xfff, 0xfff,
578 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
579 0xfff, 0xfff, 0x342, 0x2b5, 0x22e, 0x09a, 0xfff, 0x08d,
580 0x44f, 0x3ed, 0xfff, 0xfff, 0xfff, 0xfff, 0x3d1, 0xfff,
581 0xfff, 0x543, 0xfff, 0x48f, 0xfff, 0x3d2, 0xfff, 0x0d5,
582 0x113, 0x0ec, 0x427, 0xfff, 0xfff, 0xfff, 0x4c4, 0xfff,
583 0xfff, 0x50a, 0xfff, 0x144, 0xfff, 0x105, 0x39f, 0x294,
584 0x164, 0xfff, 0x31a, 0xfff, 0xfff, 0x49a, 0xfff, 0x130,
585 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
586 0x1be, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
587 0xfff, 0xfff, 0x49e, 0x371, 0xfff, 0xfff, 0xfff, 0xfff,
588 0xfff, 0xfff, 0xfff, 0xfff, 0x0e8, 0x49c, 0x0f4, 0xfff,
589 0x338, 0x1a7, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
590 0xfff, 0x36c, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
591 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
592 0xfff, 0x1ae, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
593 0xfff, 0x31b, 0xfff, 0xfff, 0x2dd, 0x522, 0xfff, 0xfff,
594 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x2f4,
595 0x3c6, 0x30d, 0xfff, 0xfff, 0xfff, 0xfff, 0x34c, 0x18f,
596 0x30a, 0xfff, 0x01f, 0x079, 0xfff, 0xfff, 0x54d, 0x46b,
597 0x28c, 0x37f, 0xfff, 0xfff, 0xfff, 0xfff, 0x355, 0xfff,
598 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x14f, 0xfff, 0xfff,
599 0xfff, 0xfff, 0xfff, 0x359, 0x3fe, 0x3c5, 0xfff, 0xfff,
600 0xfff, 0xfff, 0x423, 0xfff, 0xfff, 0x34a, 0x22c, 0xfff,
601 0x25a, 0xfff, 0xfff, 0x4ad, 0xfff, 0x28d, 0xfff, 0xfff,
602 0xfff, 0xfff, 0xfff, 0x547, 0xfff, 0xfff, 0xfff, 0xfff,
603 0x2e2, 0xfff, 0xfff, 0x1d5, 0xfff, 0x2a8, 0xfff, 0xfff,
604 0x03f, 0xfff, 0xfff, 0xfff, 0xfff, 0x3eb, 0x0fa, 0xfff,
605 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x55b, 0xfff,
606 0x08e, 0xfff, 0x3ae, 0xfff, 0x3a4, 0xfff, 0x282, 0x158,
607 0xfff, 0x382, 0xfff, 0xfff, 0x499, 0xfff, 0xfff, 0x08a,
608 0xfff, 0xfff, 0xfff, 0x456, 0x3be, 0xfff, 0x1e2, 0xfff,
609 0xfff, 0xfff, 0xfff, 0xfff, 0x559, 0xfff, 0x1a0, 0xfff,
610 0xfff, 0x0b4, 0xfff, 0xfff, 0xfff, 0x2df, 0xfff, 0xfff,
611 0xfff, 0x07f, 0x4f5, 0xfff, 0xfff, 0x27c, 0x133, 0x017,
612 0xfff, 0x3fd, 0xfff, 0xfff, 0xfff, 0x44d, 0x4cd, 0x17a,
613 0x0d7, 0x537, 0xfff, 0xfff, 0x353, 0xfff, 0xfff, 0x351,
614 0x366, 0xfff, 0x44a, 0xfff, 0x1a6, 0xfff, 0xfff, 0xfff,
615 0x291, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x1e3,
616 0xfff, 0xfff, 0xfff, 0xfff, 0x389, 0xfff, 0x07a, 0xfff,
617 0x1b6, 0x2ed, 0xfff, 0xfff, 0xfff, 0xfff, 0x24e, 0x074,
618 0xfff, 0xfff, 0x3dc, 0xfff, 0x4e3, 0xfff, 0xfff, 0xfff,
619 0xfff, 0x4eb, 0xfff, 0xfff, 0x3b8, 0x4de, 0xfff, 0x19c,
620 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x262,
621 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x076, 0x4e8, 0x3da,
622 0xfff, 0x531, 0xfff, 0xfff, 0x14a, 0xfff, 0x0a2, 0x433,
623 0x3df, 0x1e9, 0xfff, 0xfff, 0xfff, 0xfff, 0x3e7, 0x285,
624 0x2d8, 0xfff, 0xfff, 0xfff, 0x349, 0x18d, 0x098, 0xfff,
625 0x0df, 0x4bf, 0xfff, 0xfff, 0x0b2, 0xfff, 0x346, 0x24d,
626 0xfff, 0xfff, 0xfff, 0x24f, 0x4fa, 0x2f9, 0xfff, 0xfff,
627 0x3c9, 0xfff, 0x2b4, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
628 0xfff, 0x056, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
629 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
630 0xfff, 0x179, 0xfff, 0x0e9, 0x3f0, 0x33d, 0xfff, 0xfff,
631 0xfff, 0xfff, 0xfff, 0x1fd, 0xfff, 0xfff, 0x526, 0xfff,
632 0xfff, 0xfff, 0x53d, 0xfff, 0xfff, 0xfff, 0x170, 0x331,
633 0xfff, 0x068, 0xfff, 0xfff, 0xfff, 0x3f7, 0xfff, 0x3d8,
634 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
635 0xfff, 0x09f, 0x556, 0xfff, 0xfff, 0x02d, 0xfff, 0xfff,
636 0x553, 0xfff, 0xfff, 0xfff, 0x1f0, 0xfff, 0xfff, 0x4d6,
637 0x41e, 0xfff, 0xfff, 0xfff, 0xfff, 0x4d5, 0xfff, 0xfff,
638 0xfff, 0xfff, 0xfff, 0x248, 0xfff, 0xfff, 0xfff, 0x0a3,
639 0xfff, 0x217, 0xfff, 0xfff, 0xfff, 0x4f1, 0x209, 0xfff,
640 0xfff, 0x475, 0x234, 0x52b, 0x398, 0xfff, 0x08b, 0xfff,
641 0xfff, 0xfff, 0xfff, 0x2c2, 0xfff, 0xfff, 0xfff, 0xfff,
642 0xfff, 0xfff, 0x268, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
643 0xfff, 0x4a3, 0xfff, 0x0aa, 0xfff, 0x1d9, 0xfff, 0xfff,
644 0xfff, 0xfff, 0x155, 0xfff, 0xfff, 0xfff, 0xfff, 0x0bf,
645 0x539, 0xfff, 0xfff, 0x2f1, 0x545, 0xfff, 0xfff, 0xfff,
646 0xfff, 0xfff, 0xfff, 0x2a7, 0x06f, 0xfff, 0x378, 0xfff,
647 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x25e, 0xfff,
648 0xfff, 0xfff, 0xfff, 0x15d, 0x02a, 0xfff, 0xfff, 0x0bc,
649 0x235, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
650 0x150, 0xfff, 0x1a9, 0xfff, 0xfff, 0xfff, 0xfff, 0x381,
651 0xfff, 0x04e, 0x270, 0x13f, 0xfff, 0xfff, 0x405, 0xfff,
652 0x3cd, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
653 0xfff, 0x2ef, 0xfff, 0x06a, 0xfff, 0xfff, 0xfff, 0x34f,
654 0x212, 0xfff, 0xfff, 0x0e2, 0xfff, 0x083, 0x298, 0xfff,
655 0xfff, 0xfff, 0x0c2, 0xfff, 0xfff, 0x52e, 0xfff, 0x488,
656 0xfff, 0xfff, 0xfff, 0x36b, 0xfff, 0xfff, 0xfff, 0x442,
657 0x091, 0xfff, 0x41c, 0xfff, 0xfff, 0x3a5, 0xfff, 0x4e6,
658 0xfff, 0xfff, 0x40d, 0x31d, 0xfff, 0xfff, 0xfff, 0x4c1,
659 0x053, 0xfff, 0x418, 0x13c, 0xfff, 0x350, 0xfff, 0x0ae,
660 0xfff, 0xfff, 0x41f, 0xfff, 0x470, 0xfff, 0x4ca, 0xfff,
661 0xfff, 0xfff, 0x02b, 0x450, 0xfff, 0x1f8, 0xfff, 0xfff,
662 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x293, 0xfff,
663 0xfff, 0xfff, 0xfff, 0x411, 0xfff, 0xfff, 0xfff, 0xfff,
664 0xfff, 0xfff, 0xfff, 0xfff, 0x0b8, 0xfff, 0xfff, 0xfff,
665 0x3e1, 0xfff, 0xfff, 0xfff, 0xfff, 0x43c, 0xfff, 0x2b2,
666 0x2ab, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x1ec,
667 0xfff, 0xfff, 0xfff, 0x3f8, 0x034, 0xfff, 0xfff, 0xfff,
668 0xfff, 0xfff, 0xfff, 0x11a, 0xfff, 0x541, 0x45c, 0x134,
669 0x1cc, 0xfff, 0xfff, 0xfff, 0x469, 0xfff, 0xfff, 0x44b,
670 0x161, 0xfff, 0xfff, 0xfff, 0x055, 0xfff, 0xfff, 0xfff,
671 0xfff, 0x307, 0xfff, 0xfff, 0xfff, 0xfff, 0x2d1, 0xfff,
672 0xfff, 0xfff, 0x124, 0x37b, 0x26b, 0x336, 0xfff, 0xfff,
673 0x2e4, 0x3cb, 0xfff, 0xfff, 0x0f8, 0x3c8, 0xfff, 0xfff,
674 0xfff, 0x461, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x4b5,
675 0x2cf, 0xfff, 0xfff, 0xfff, 0x20f, 0xfff, 0x35a, 0xfff,
676 0x490, 0xfff, 0x185, 0xfff, 0xfff, 0xfff, 0xfff, 0x42e,
677 0xfff, 0xfff, 0xfff, 0xfff, 0x54b, 0xfff, 0xfff, 0xfff,
678 0x146, 0xfff, 0x412, 0xfff, 0xfff, 0xfff, 0x1ff, 0xfff,
679 0xfff, 0x3e0, 0xfff, 0xfff, 0xfff, 0xfff, 0x2d5, 0xfff,
680 0x4df, 0x505, 0xfff, 0x413, 0xfff, 0x1a5, 0xfff, 0x3b2,
681 0xfff, 0xfff, 0xfff, 0x35b, 0xfff, 0x116, 0xfff, 0xfff,
682 0x171, 0x4d0, 0xfff, 0x154, 0x12d, 0xfff, 0xfff, 0xfff,
683 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x468, 0x4db, 0xfff,
684 0xfff, 0x1df, 0xfff, 0xfff, 0xfff, 0xfff, 0x05a, 0xfff,
685 0x0f1, 0x403, 0xfff, 0x22b, 0x2e0, 0xfff, 0xfff, 0xfff,
686 0x2b7, 0x373, 0xfff, 0xfff, 0xfff, 0xfff, 0x13e, 0xfff,
687 0xfff, 0xfff, 0x0d0, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
688 0x329, 0x1d2, 0x3fa, 0x047, 0xfff, 0x2f2, 0xfff, 0xfff,
689 0x141, 0x0ac, 0x1d7, 0xfff, 0x07d, 0xfff, 0xfff, 0xfff,
690 0x1c1, 0xfff, 0x487, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
691 0xfff, 0xfff, 0xfff, 0x045, 0xfff, 0xfff, 0xfff, 0xfff,
692 0x288, 0x0cd, 0xfff, 0xfff, 0xfff, 0xfff, 0x226, 0x1d8,
693 0xfff, 0x153, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x4cb,
694 0x528, 0xfff, 0xfff, 0xfff, 0x20a, 0x343, 0x3a1, 0xfff,
695 0xfff, 0xfff, 0x2d7, 0x2d3, 0x1aa, 0x4c5, 0xfff, 0xfff,
696 0xfff, 0x42b, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
697 0xfff, 0xfff, 0xfff, 0xfff, 0x3e9, 0xfff, 0x20b, 0x260,
698 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x37c, 0x2fd,
699 0xfff, 0xfff, 0x2c8, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
700 0xfff, 0x31e, 0xfff, 0x335, 0xfff, 0xfff, 0xfff, 0xfff,
701 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
702 0xfff, 0xfff, 0x135, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
703 0xfff, 0xfff, 0x35c, 0x4dd, 0x129, 0xfff, 0xfff, 0xfff,
704 0xfff, 0xfff, 0x1ef, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
705 0xfff, 0x34e, 0xfff, 0xfff, 0xfff, 0xfff, 0x407, 0xfff,
706 0xfff, 0xfff, 0xfff, 0xfff, 0x3ad, 0xfff, 0xfff, 0xfff,
707 0x379, 0xfff, 0xfff, 0x1d0, 0x38d, 0xfff, 0xfff, 0x1e8,
708 0x184, 0x3c1, 0x1c4, 0xfff, 0x1f9, 0xfff, 0xfff, 0x424,
709 0xfff, 0xfff, 0xfff, 0xfff, 0x1d3, 0x0d4, 0xfff, 0x4e9,
710 0xfff, 0xfff, 0xfff, 0x530, 0x107, 0xfff, 0x106, 0x04f,
711 0xfff, 0xfff, 0x4c7, 0x503, 0xfff, 0xfff, 0xfff, 0xfff,
712 0xfff, 0x15c, 0xfff, 0x23f, 0xfff, 0xfff, 0xfff, 0xfff,
713 0xfff, 0xfff, 0xfff, 0xfff, 0x4f3, 0xfff, 0xfff, 0x3c7,
714 0xfff, 0x278, 0xfff, 0xfff, 0x0a6, 0xfff, 0xfff, 0xfff,
715 0x122, 0x1cf, 0xfff, 0x327, 0xfff, 0x2e5, 0xfff, 0x29d,
716 0xfff, 0xfff, 0x3f1, 0xfff, 0xfff, 0x48d, 0xfff, 0xfff,
717 0xfff, 0xfff, 0x054, 0xfff, 0xfff, 0xfff, 0xfff, 0x178,
718 0x27e, 0x4e0, 0x352, 0x02f, 0x09c, 0xfff, 0x2a0, 0xfff,
719 0xfff, 0x46a, 0x457, 0xfff, 0xfff, 0x501, 0xfff, 0x2ba,
720 0xfff, 0xfff, 0xfff, 0x54e, 0x2e7, 0xfff, 0xfff, 0xfff,
721 0xfff, 0xfff, 0x551, 0xfff, 0xfff, 0x1db, 0x2aa, 0xfff,
722 0xfff, 0x4bc, 0xfff, 0xfff, 0x395, 0xfff, 0x0de, 0xfff,
723 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x455, 0xfff, 0x17e,
724 0xfff, 0x221, 0x4a7, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
725 0x388, 0xfff, 0xfff, 0xfff, 0x308, 0xfff, 0xfff, 0xfff,
726 0x20e, 0x4b9, 0xfff, 0x273, 0x20c, 0x09e, 0xfff, 0x057,
727 0xfff, 0xfff, 0xfff, 0xfff, 0x3f2, 0xfff, 0x1a8, 0x3a6,
728 0x14c, 0xfff, 0xfff, 0x071, 0xfff, 0xfff, 0x53a, 0xfff,
729 0xfff, 0xfff, 0xfff, 0x109, 0xfff, 0xfff, 0x399, 0xfff,
730 0x061, 0x4f0, 0x39e, 0x244, 0xfff, 0x035, 0xfff, 0xfff,
731 0x305, 0x47e, 0x297, 0xfff, 0xfff, 0x2b8, 0xfff, 0xfff,
732 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x1bc, 0xfff, 0x2fc,
733 0xfff, 0xfff, 0x554, 0xfff, 0xfff, 0xfff, 0xfff, 0x3b6,
734 0xfff, 0xfff, 0xfff, 0x515, 0x397, 0xfff, 0xfff, 0x12f,
735 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x4e5,
736 0xfff, 0x4fc, 0xfff, 0xfff, 0x05e, 0xfff, 0xfff, 0xfff,
737 0xfff, 0xfff, 0x0a8, 0x3af, 0x015, 0xfff, 0xfff, 0xfff,
738 0xfff, 0x138, 0xfff, 0xfff, 0xfff, 0x540, 0xfff, 0xfff,
739 0xfff, 0x027, 0x523, 0x2f0, 0xfff, 0xfff, 0xfff, 0xfff,
740 0xfff, 0xfff, 0x16c, 0xfff, 0x27d, 0xfff, 0xfff, 0xfff,
741 0xfff, 0x04c, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x4dc,
742 0xfff, 0xfff, 0x059, 0x301, 0xfff, 0xfff, 0xfff, 0xfff,
743 0xfff, 0xfff, 0xfff, 0x1a3, 0xfff, 0x15a, 0xfff, 0xfff,
744 0x0a5, 0xfff, 0x435, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
745 0xfff, 0x051, 0xfff, 0xfff, 0x131, 0xfff, 0x4f4, 0xfff,
746 0xfff, 0xfff, 0xfff, 0x441, 0xfff, 0x4fb, 0xfff, 0x03b,
747 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x1ed, 0x274,
748 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x0d3, 0x55e, 0x1b3,
749 0xfff, 0x0bd, 0xfff, 0xfff, 0xfff, 0xfff, 0x225, 0xfff,
750 0xfff, 0xfff, 0xfff, 0xfff, 0x4b7, 0xfff, 0xfff, 0x2ff,
751 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x4c3, 0xfff,
752 0x383, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x2f6,
753 0xfff, 0xfff, 0x1ee, 0xfff, 0x03d, 0xfff, 0xfff, 0xfff,
754 0xfff, 0xfff, 0x26f, 0x1dc, 0xfff, 0x0db, 0xfff, 0xfff,
755 0xfff, 0xfff, 0xfff, 0x0ce, 0xfff, 0xfff, 0x127, 0x03a,
756 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x311, 0xfff,
757 0xfff, 0x13d, 0x09d, 0x47b, 0x2a6, 0x50d, 0x510, 0x19a,
758 0xfff, 0x354, 0x414, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
759 0xfff, 0xfff, 0x44c, 0x3b0, 0xfff, 0x23d, 0x429, 0xfff,
760 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
761 0x4c0, 0x416, 0xfff, 0x05b, 0xfff, 0xfff, 0x137, 0xfff,
762 0x25f, 0x49f, 0xfff, 0x279, 0x013, 0xfff, 0xfff, 0xfff,
763 0x269, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
764 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x3d0, 0xfff, 0xfff,
765 0xfff, 0xfff, 0xfff, 0xfff, 0x077, 0xfff, 0xfff, 0x3fb,
766 0xfff, 0xfff, 0xfff, 0xfff, 0x271, 0x3a0, 0xfff, 0xfff,
767 0x40f, 0xfff, 0xfff, 0x3de, 0xfff, 0xfff, 0xfff, 0xfff,
768 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x1ab, 0x26a,
769 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x489, 0xfff, 0xfff,
770 0x252, 0xfff, 0xfff, 0xfff, 0xfff, 0x1b7, 0x42f, 0xfff,
771 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x3b7,
772 0xfff, 0x2bb, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
773 0xfff, 0xfff, 0xfff, 0x0f7, 0x01d, 0xfff, 0x067, 0xfff,
774 0xfff, 0xfff, 0xfff, 0x4e2, 0xfff, 0xfff, 0x4bb, 0xfff,
775 0xfff, 0xfff, 0x17b, 0xfff, 0x0ee, 0xfff, 0xfff, 0xfff,
776 0xfff, 0xfff, 0x36e, 0xfff, 0xfff, 0xfff, 0x533, 0xfff,
777 0xfff, 0xfff, 0x4d4, 0x356, 0xfff, 0xfff, 0x375, 0xfff,
778 0xfff, 0xfff, 0xfff, 0x4a4, 0x513, 0xfff, 0xfff, 0xfff,
779 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x4ff, 0xfff, 0x2af,
780 0xfff, 0xfff, 0x026, 0xfff, 0x0ad, 0xfff, 0xfff, 0xfff,
781 0xfff, 0x26e, 0xfff, 0xfff, 0xfff, 0xfff, 0x493, 0xfff,
782 0x463, 0x4d2, 0x4be, 0xfff, 0xfff, 0xfff, 0xfff, 0x4f2,
783 0x0b6, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
784 0xfff, 0x32d, 0x315, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
785 0xfff, 0x13a, 0x4a1, 0xfff, 0x27a, 0xfff, 0xfff, 0xfff,
786 0x47a, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
787 0x334, 0xfff, 0xfff, 0xfff, 0xfff, 0x54c, 0xfff, 0xfff,
788 0xfff, 0x0c9, 0x007, 0xfff, 0xfff, 0x12e, 0xfff, 0x0ff,
789 0xfff, 0xfff, 0x3f5, 0x509, 0xfff, 0xfff, 0xfff, 0xfff,
790 0x1c3, 0x2ad, 0xfff, 0xfff, 0x47c, 0x261, 0xfff, 0xfff,
791 0xfff, 0xfff, 0xfff, 0x152, 0xfff, 0xfff, 0xfff, 0x339,
792 0xfff, 0x243, 0x1c0, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
793 0x063, 0xfff, 0xfff, 0x254, 0xfff, 0xfff, 0x173, 0xfff,
794 0x0c7, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
795 0xfff, 0x362, 0x259, 0x485, 0x374, 0x0dc, 0x3ab, 0xfff,
796 0x1c5, 0x534, 0x544, 0xfff, 0xfff, 0x508, 0xfff, 0x402,
797 0x408, 0xfff, 0x0e7, 0xfff, 0xfff, 0x00a, 0x205, 0xfff,
798 0xfff, 0x2b9, 0xfff, 0xfff, 0xfff, 0x465, 0xfff, 0xfff,
799 0xfff, 0xfff, 0xfff, 0xfff, 0x23a, 0xfff, 0xfff, 0xfff,
800 0xfff, 0x147, 0x19d, 0x115, 0x214, 0xfff, 0x090, 0x368,
801 0xfff, 0x210, 0xfff, 0xfff, 0x280, 0x52a, 0x163, 0x148,
802 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x326, 0xfff, 0xfff,
803 0xfff, 0xfff, 0xfff, 0x2de, 0xfff, 0xfff, 0xfff, 0xfff,
804 0x206, 0x2c1, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
805 0x189, 0xfff, 0xfff, 0xfff, 0xfff, 0x367, 0xfff, 0x1a4,
806 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x443, 0xfff, 0x27b,
807 0xfff, 0xfff, 0x251, 0x549, 0xfff, 0xfff, 0xfff, 0xfff,
808 0xfff, 0xfff, 0x188, 0x04b, 0xfff, 0xfff, 0xfff, 0x31f,
809 0x4a6, 0xfff, 0x246, 0x1de, 0x156, 0xfff, 0xfff, 0xfff,
810 0x3a9, 0xfff, 0xfff, 0xfff, 0x2fa, 0xfff, 0x128, 0x0d1,
811 0x449, 0x255, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
812 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
813 0xfff, 0xfff, 0xfff, 0xfff, 0x258, 0xfff, 0xfff, 0xfff,
814 0x532, 0xfff, 0xfff, 0xfff, 0x303, 0x517, 0xfff, 0xfff,
815 0x2a9, 0x24a, 0xfff, 0xfff, 0x231, 0xfff, 0xfff, 0xfff,
816 0xfff, 0xfff, 0x4b6, 0x516, 0xfff, 0xfff, 0x0e4, 0x0eb,
817 0xfff, 0x4e4, 0xfff, 0x275, 0xfff, 0xfff, 0x031, 0xfff,
818 0xfff, 0xfff, 0xfff, 0xfff, 0x025, 0x21a, 0xfff, 0x0cc,
819 0x45f, 0x3d9, 0x289, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
820 0xfff, 0xfff, 0x23e, 0xfff, 0xfff, 0xfff, 0x438, 0x097,
821 0x419, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
822 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
823 0xfff, 0xfff, 0x0a9, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
824 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
825 0x37e, 0x0e0, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x431,
826 0x372, 0xfff, 0xfff, 0xfff, 0x1ba, 0x06e, 0xfff, 0x1b1,
827 0xfff, 0xfff, 0x12a, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
828 0xfff, 0xfff, 0x193, 0xfff, 0xfff, 0xfff, 0xfff, 0x10a,
829 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x048, 0x1b4,
830 0xfff, 0xfff, 0xfff, 0xfff, 0x295, 0x140, 0x108, 0xfff,
831 0xfff, 0xfff, 0xfff, 0x16f, 0xfff, 0x0a4, 0x37a, 0xfff,
832 0x29a, 0xfff, 0x284, 0xfff, 0xfff, 0xfff, 0xfff, 0x4c6,
833 0x2a2, 0x3a3, 0xfff, 0x201, 0xfff, 0xfff, 0xfff, 0x4bd,
834 0x005, 0x54a, 0x3b5, 0x204, 0x2ee, 0x11d, 0x436, 0xfff,
835 0xfff, 0xfff, 0xfff, 0xfff, 0x3ec, 0xfff, 0xfff, 0xfff,
836 0xfff, 0xfff, 0xfff, 0xfff, 0x11f, 0x498, 0x21c, 0xfff,
837 0xfff, 0xfff, 0x3d6, 0xfff, 0x4ab, 0xfff, 0x432, 0x2eb,
838 0x542, 0x4fd, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
839 0xfff, 0xfff, 0xfff, 0x4ce, 0xfff, 0xfff, 0x2fb, 0xfff,
840 0xfff, 0x2e1, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
841 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x1b9, 0x037, 0x0dd,
842 0xfff, 0xfff, 0xfff, 0x2bf, 0x521, 0x496, 0x095, 0xfff,
843 0xfff, 0x328, 0x070, 0x1bf, 0xfff, 0x393, 0xfff, 0xfff,
844 0x102, 0xfff, 0xfff, 0x21b, 0xfff, 0x142, 0x263, 0x519,
845 0xfff, 0x2a5, 0x177, 0xfff, 0x14d, 0x471, 0x4ae, 0xfff,
846 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
847 0x1f6, 0xfff, 0x481, 0xfff, 0xfff, 0xfff, 0x151, 0xfff,
848 0xfff, 0xfff, 0x085, 0x33f, 0xfff, 0xfff, 0xfff, 0x084,
849 0xfff, 0xfff, 0xfff, 0x345, 0x3a2, 0xfff, 0xfff, 0x0a0,
850 0x0da, 0x024, 0xfff, 0xfff, 0xfff, 0x1bd, 0xfff, 0x55c,
851 0x467, 0x445, 0xfff, 0xfff, 0xfff, 0x052, 0xfff, 0xfff,
852 0xfff, 0xfff, 0x51e, 0xfff, 0xfff, 0x39d, 0xfff, 0x35f,
853 0xfff, 0x376, 0x3ee, 0xfff, 0xfff, 0xfff, 0xfff, 0x448,
854 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x16a,
855 0xfff, 0x036, 0x38f, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
856 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x211,
857 0xfff, 0xfff, 0xfff, 0x230, 0xfff, 0xfff, 0x3ba, 0xfff,
858 0xfff, 0xfff, 0x3ce, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
859 0xfff, 0xfff, 0xfff, 0x229, 0xfff, 0x176, 0xfff, 0xfff,
860 0xfff, 0xfff, 0xfff, 0x00b, 0xfff, 0x162, 0x018, 0xfff,
861 0xfff, 0x233, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
862 0x400, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
863 0xfff, 0xfff, 0xfff, 0x12b, 0xfff, 0xfff, 0xfff, 0xfff,
864 0xfff, 0x3f4, 0xfff, 0x0f0, 0xfff, 0x1ac, 0xfff, 0xfff,
865 0x119, 0xfff, 0x2c0, 0xfff, 0xfff, 0xfff, 0x49b, 0xfff,
866 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x23c, 0xfff,
867 0x4b3, 0x010, 0x064, 0xfff, 0xfff, 0x4ba, 0xfff, 0xfff,
868 0xfff, 0xfff, 0xfff, 0x3c2, 0xfff, 0xfff, 0xfff, 0xfff,
869 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x006, 0x196, 0xfff,
870 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x100, 0x191, 0xfff,
871 0x1ea, 0x29f, 0xfff, 0xfff, 0xfff, 0x276, 0xfff, 0xfff,
872 0x2b1, 0x3b9, 0xfff, 0x03c, 0xfff, 0xfff, 0xfff, 0x180,
873 0xfff, 0x08f, 0xfff, 0xfff, 0x19e, 0x019, 0xfff, 0x0b0,
874 0x0fd, 0x332, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
875 0xfff, 0x06b, 0x2e8, 0xfff, 0x446, 0xfff, 0xfff, 0x004,
876 0x247, 0x197, 0xfff, 0x112, 0x169, 0x292, 0xfff, 0x302,
877 0xfff, 0xfff, 0x33b, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
878 0xfff, 0xfff, 0xfff, 0x287, 0x21f, 0xfff, 0x3ea, 0xfff,
879 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x4e7, 0xfff, 0xfff,
880 0xfff, 0xfff, 0xfff, 0x3a8, 0xfff, 0xfff, 0x2bc, 0xfff,
881 0x484, 0x296, 0xfff, 0x1c9, 0x08c, 0x1e5, 0x48a, 0xfff,
882 0x360, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
883 0x1ca, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
884 0xfff, 0xfff, 0xfff, 0x10d, 0xfff, 0xfff, 0xfff, 0xfff,
885 0xfff, 0xfff, 0x066, 0x2ea, 0x28b, 0x25b, 0xfff, 0x072,
886 0xfff, 0xfff, 0xfff, 0xfff, 0x2b6, 0xfff, 0xfff, 0x272,
887 0xfff, 0xfff, 0x525, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
888 0x2ca, 0xfff, 0xfff, 0xfff, 0x299, 0xfff, 0xfff, 0xfff,
889 0x558, 0x41a, 0xfff, 0x4f7, 0x557, 0xfff, 0x4a0, 0x344,
890 0x12c, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x125,
891 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
892 0x40e, 0xfff, 0xfff, 0x502, 0xfff, 0x103, 0x3e6, 0xfff,
893 0x527, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
894 0xfff, 0xfff, 0xfff, 0x45d, 0xfff, 0xfff, 0xfff, 0xfff,
895 0x44e, 0xfff, 0xfff, 0xfff, 0xfff, 0x0d2, 0x4c9, 0x35e,
896 0x459, 0x2d9, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x17d,
897 0x0c4, 0xfff, 0xfff, 0xfff, 0x3ac, 0x390, 0x094, 0xfff,
898 0x483, 0x0ab, 0xfff, 0x253, 0xfff, 0x391, 0xfff, 0xfff,
899 0xfff, 0xfff, 0x123, 0x0ef, 0xfff, 0xfff, 0xfff, 0x330,
900 0x38c, 0xfff, 0xfff, 0x2ae, 0xfff, 0xfff, 0xfff, 0x042,
901 0x012, 0x06d, 0xfff, 0xfff, 0xfff, 0x32a, 0x3db, 0x364,
902 0x2dc, 0xfff, 0x30f, 0x3d7, 0x4a5, 0x050, 0xfff, 0xfff,
903 0x029, 0xfff, 0xfff, 0xfff, 0xfff, 0x1d1, 0xfff, 0xfff,
904 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x480, 0xfff,
905 0x4ed, 0x081, 0x0a1, 0xfff, 0xfff, 0xfff, 0x30e, 0x52f,
906 0x257, 0xfff, 0xfff, 0x447, 0xfff, 0xfff, 0xfff, 0xfff,
907 0xfff, 0xfff, 0xfff, 0x401, 0x3cc, 0xfff, 0xfff, 0x0fb,
908 0x2c9, 0x42a, 0x314, 0x33e, 0x3bd, 0x318, 0xfff, 0x10e,
909 0x2a1, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x24c,
910 0x506, 0xfff, 0x267, 0xfff, 0xfff, 0x219, 0xfff, 0x1eb,
911 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
912 0x309, 0x3e2, 0x46c, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
913 0x384, 0xfff, 0xfff, 0xfff, 0xfff, 0x50c, 0xfff, 0x24b,
914 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x038,
915 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x194,
916 0x143, 0x3e3, 0xfff, 0xfff, 0xfff, 0x4c2, 0xfff, 0xfff,
917 0x0e1, 0x25c, 0xfff, 0x237, 0xfff, 0x1fe, 0xfff, 0xfff,
918 0xfff, 0x065, 0x2a4, 0xfff, 0x386, 0x55a, 0x11b, 0xfff,
919 0xfff, 0x192, 0xfff, 0x183, 0x00e, 0xfff, 0xfff, 0xfff,
920 0xfff, 0xfff, 0xfff, 0x4b2, 0x18e, 0xfff, 0xfff, 0xfff,
921 0xfff, 0x486, 0x4ef, 0x0c6, 0x380, 0xfff, 0x4a8, 0xfff,
922 0x0c5, 0xfff, 0xfff, 0xfff, 0xfff, 0x093, 0x1b8, 0xfff,
923 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x2e6,
924 0xfff, 0x0f3, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
925 0x28e, 0xfff, 0x53b, 0x420, 0x22a, 0x33a, 0xfff, 0x387,
926 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x2a3, 0xfff, 0xfff,
927 0xfff, 0x428, 0x500, 0xfff, 0xfff, 0x120, 0x2c6, 0x290,
928 0x2f5, 0x0e3, 0xfff, 0x0b7, 0xfff, 0x319, 0x474, 0xfff,
929 0xfff, 0xfff, 0x529, 0x014, 0xfff, 0x41b, 0x40a, 0x18b,
930 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x0d9,
931 0xfff, 0x38a, 0xfff, 0xfff, 0xfff, 0xfff, 0x1ce, 0xfff,
932 0xfff, 0xfff, 0xfff, 0xfff, 0x3b1, 0xfff, 0xfff, 0x05d,
933 0x2c4, 0xfff, 0xfff, 0x4af, 0xfff, 0x030, 0xfff, 0xfff,
934 0x203, 0xfff, 0x277, 0x256, 0xfff, 0xfff, 0xfff, 0x4f9,
935 0xfff, 0x2c7, 0xfff, 0x466, 0x016, 0x1cd, 0xfff, 0x167,
936 0xfff, 0xfff, 0x0c8, 0xfff, 0x43d, 0xfff, 0xfff, 0x020,
937 0xfff, 0xfff, 0x232, 0x1cb, 0x1e0, 0xfff, 0xfff, 0x347,
938 0xfff, 0x478, 0xfff, 0x365, 0xfff, 0xfff, 0xfff, 0xfff,
939 0x358, 0xfff, 0x10b, 0xfff, 0x35d, 0xfff, 0xfff, 0xfff,
940 0xfff, 0xfff, 0x452, 0x22d, 0xfff, 0xfff, 0x47d, 0xfff,
941 0x2f3, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x460, 0xfff,
942 0xfff, 0xfff, 0x50b, 0xfff, 0xfff, 0xfff, 0x2ec, 0xfff,
943 0xfff, 0xfff, 0xfff, 0xfff, 0x4b1, 0x422, 0xfff, 0xfff,
944 0xfff, 0x2d4, 0xfff, 0x239, 0xfff, 0xfff, 0xfff, 0x439,
945 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
946 0xfff, 0x491, 0x075, 0xfff, 0xfff, 0xfff, 0x06c, 0xfff,
947 0xfff, 0x0f9, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
948 0xfff, 0x139, 0xfff, 0x4f6, 0xfff, 0xfff, 0x409, 0xfff,
949 0xfff, 0x15b, 0xfff, 0xfff, 0x348, 0xfff, 0xfff, 0xfff,
950 0xfff, 0x4a2, 0x49d, 0xfff, 0x033, 0x175, 0xfff, 0x039,
951 0xfff, 0x312, 0x40c, 0xfff, 0xfff, 0x325, 0xfff, 0xfff,
952 0xfff, 0xfff, 0xfff, 0xfff, 0x4aa, 0xfff, 0xfff, 0xfff,
953 0xfff, 0xfff, 0xfff, 0x165, 0x3bc, 0x48c, 0x310, 0x096,
954 0xfff, 0xfff, 0x250, 0x1a2, 0xfff, 0xfff, 0xfff, 0xfff,
955 0x20d, 0x2ac, 0xfff, 0xfff, 0x39b, 0xfff, 0x377, 0xfff,
956 0x512, 0x495, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
957 0xfff, 0xfff, 0xfff, 0xfff, 0x357, 0x4ea, 0xfff, 0xfff,
958 0xfff, 0xfff, 0x198, 0xfff, 0xfff, 0xfff, 0x434, 0x04a,
959 0xfff, 0xfff, 0xfff, 0xfff, 0x062, 0xfff, 0x1d6, 0x1c8,
960 0xfff, 0x1f3, 0x281, 0xfff, 0x462, 0xfff, 0xfff, 0xfff,
961 0x4b0, 0xfff, 0x207, 0xfff, 0xfff, 0xfff, 0xfff, 0x3dd,
962 0xfff, 0xfff, 0x55d, 0xfff, 0x552, 0x494, 0x1af, 0xfff,
963 0xfff, 0xfff, 0xfff, 0xfff, 0x227, 0xfff, 0xfff, 0x069,
964 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x43e,
965 0x0b5, 0xfff, 0x524, 0x2d2, 0xfff, 0xfff, 0xfff, 0x28f,
966 0xfff, 0x01b, 0x50e, 0xfff, 0xfff, 0x1bb, 0xfff, 0xfff,
967 0x41d, 0xfff, 0x32e, 0x48e, 0xfff, 0x1f7, 0x224, 0xfff,
968 0xfff, 0xfff, 0xfff, 0xfff, 0x394, 0xfff, 0xfff, 0xfff,
969 0xfff, 0x52c, 0xfff, 0xfff, 0xfff, 0x392, 0xfff, 0x1e7,
970 0xfff, 0xfff, 0x3f9, 0x3a7, 0xfff, 0x51f, 0xfff, 0x0bb,
971 0x118, 0x3ca, 0xfff, 0x1dd, 0xfff, 0x48b, 0xfff, 0xfff,
972 0xfff, 0xfff, 0x50f, 0xfff, 0x0d6, 0xfff, 0x1fa, 0xfff,
973 0x11e, 0xfff, 0xfff, 0xfff, 0xfff, 0x4d7, 0xfff, 0x078,
974 0x008, 0xfff, 0x25d, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
975 0x032, 0x33c, 0xfff, 0x4d9, 0x160, 0xfff, 0xfff, 0x300,
976 0x0b1, 0xfff, 0x322, 0xfff, 0x4ec, 0xfff, 0xfff, 0x200,
977 0x00c, 0x369, 0x473, 0xfff, 0xfff, 0x32c, 0xfff, 0xfff,
978 0xfff, 0xfff, 0xfff, 0xfff, 0x53e, 0x3d4, 0x417, 0xfff,
979 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
980 0x34b, 0x001, 0x39a, 0x02c, 0xfff, 0xfff, 0x2ce, 0x00f,
981 0xfff, 0x0ba, 0xfff, 0xfff, 0xfff, 0xfff, 0x060, 0xfff,
982 0x406, 0xfff, 0xfff, 0xfff, 0x4ee, 0x4ac, 0xfff, 0x43f,
983 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x29b, 0xfff, 0xfff,
984 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x216,
985 0x190, 0xfff, 0x396, 0x464, 0xfff, 0xfff, 0x323, 0xfff,
986 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x2e9, 0xfff, 0x26d,
987 0x2cd, 0x040, 0xfff, 0xfff, 0xfff, 0xfff, 0x38b, 0x3c0,
988 0xfff, 0xfff, 0xfff, 0x1f2, 0xfff, 0x0ea, 0xfff, 0xfff,
989 0x472, 0xfff, 0x1fb, 0xfff, 0xfff, 0x0af, 0x27f, 0xfff,
990 0xfff, 0xfff, 0x479, 0x023, 0xfff, 0x0d8, 0x3b3, 0xfff,
991 0xfff, 0xfff, 0x121, 0xfff, 0xfff, 0x3bf, 0xfff, 0xfff,
992 0x16b, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
993 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
994 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
995 0x45a, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
996 0xfff, 0x0be, 0xfff, 0xfff, 0xfff, 0x111, 0xfff, 0x220,
997 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
998 0xfff, 0xfff, 0x09b, 0x218, 0xfff, 0x022, 0x202, 0xfff,
999 0x4c8, 0xfff, 0x0ed, 0xfff, 0xfff, 0x182, 0xfff, 0xfff,
1000 0xfff, 0x17f, 0x213, 0xfff, 0x321, 0x36a, 0xfff, 0x086,
1001 0xfff, 0xfff, 0xfff, 0x43b, 0x088, 0xfff, 0xfff, 0xfff,
1002 0xfff, 0x26c, 0xfff, 0x2f8, 0x3b4, 0xfff, 0xfff, 0xfff,
1003 0x132, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x333, 0x444,
1004 0x0c1, 0x4d8, 0x46d, 0x264, 0xfff, 0xfff, 0xfff, 0xfff,
1005 0x426, 0xfff, 0xfff, 0xfff, 0xfff, 0x2fe, 0xfff, 0xfff,
1006 0xfff, 0xfff, 0x011, 0xfff, 0x05f, 0xfff, 0xfff, 0xfff,
1007 0xfff, 0x10c, 0x101, 0xfff, 0xfff, 0xfff, 0xfff, 0x110,
1008 0xfff, 0x044, 0x304, 0x361, 0x404, 0xfff, 0x51b, 0x099,
1009 0xfff, 0x440, 0xfff, 0xfff, 0xfff, 0x222, 0xfff, 0xfff,
1010 0xfff, 0xfff, 0x1b5, 0xfff, 0x136, 0x430, 0xfff, 0x1da,
1011 0xfff, 0xfff, 0xfff, 0x043, 0xfff, 0x17c, 0xfff, 0xfff,
1012 0xfff, 0x01c, 0xfff, 0xfff, 0xfff, 0x425, 0x236, 0xfff,
1013 0x317, 0xfff, 0xfff, 0x437, 0x3fc, 0xfff, 0x1f1, 0xfff,
1014 0x324, 0xfff, 0xfff, 0x0ca, 0x306, 0xfff, 0x548, 0xfff,
1015 0x46e, 0xfff, 0xfff, 0xfff, 0x4b8, 0x1c2, 0x286, 0xfff,
1016 0xfff, 0x087, 0x18a, 0x19f, 0xfff, 0xfff, 0xfff, 0xfff,
1017 0x18c, 0xfff, 0x215, 0xfff, 0xfff, 0xfff, 0xfff, 0x283,
1018 0xfff, 0xfff, 0xfff, 0x126, 0xfff, 0xfff, 0x370, 0xfff,
1019 0x53f, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x31c, 0xfff,
1020 0x4d1, 0xfff, 0xfff, 0xfff, 0x021, 0xfff, 0x157, 0xfff,
1021 0xfff, 0x028, 0x16e, 0xfff, 0x421, 0xfff, 0x1c6, 0xfff,
1022 0xfff, 0x511, 0xfff, 0xfff, 0x39c, 0x46f, 0x1b2, 0xfff,
1023 0xfff, 0x316, 0xfff, 0xfff, 0x009, 0xfff, 0xfff, 0x195,
1024 0xfff, 0x240, 0x546, 0xfff, 0xfff, 0x520, 0xfff, 0xfff,
1025 0xfff, 0xfff, 0xfff, 0xfff, 0x454, 0xfff, 0xfff, 0xfff,
1026 0x3f3, 0xfff, 0xfff, 0x187, 0xfff, 0x4a9, 0xfff, 0xfff,
1027 0xfff, 0xfff, 0xfff, 0xfff, 0x51c, 0x453, 0x1e6, 0xfff,
1028 0xfff, 0xfff, 0x1b0, 0xfff, 0x477, 0xfff, 0xfff, 0xfff,
1029 0x4fe, 0xfff, 0x32f, 0xfff, 0xfff, 0x15e, 0x1d4, 0xfff,
1030 0x0e5, 0xfff, 0xfff, 0xfff, 0x242, 0x14b, 0x046, 0xfff,
1031 0x3f6, 0x3bb, 0x3e4, 0xfff, 0xfff, 0x2e3, 0xfff, 0x245,
1032 0xfff, 0x149, 0xfff, 0xfff, 0xfff, 0x2db, 0xfff, 0xfff,
1033 0x181, 0xfff, 0x089, 0x2c5, 0xfff, 0x1f5, 0xfff, 0x2d6,
1034 0x507, 0xfff, 0x42d, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
1035 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
1036 0x080, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
1037 0xfff, 0xfff, 0xfff, 0xfff, 0x3c3, 0x320, 0xfff, 0x1e1,
1038 0xfff, 0x0f5, 0x13b, 0xfff, 0xfff, 0xfff, 0x003, 0x4da,
1039 0xfff, 0xfff, 0xfff, 0x42c, 0xfff, 0xfff, 0x0cb, 0xfff,
1040 0x536, 0x2c3, 0xfff, 0xfff, 0xfff, 0xfff, 0x199, 0xfff,
1041 0xfff, 0x0c0, 0xfff, 0x01e, 0x497, 0xfff, 0xfff, 0x3e5,
1042 0xfff, 0xfff, 0xfff, 0x0cf, 0xfff, 0x2bd, 0xfff, 0x223,
1043 0xfff, 0x3ff, 0xfff, 0x058, 0x174, 0x3ef, 0xfff, 0x002
1044};
1045
1046static unsigned short err_pos(unsigned short din)
1047{
1048 BUG_ON(din >= ARRAY_SIZE(err_pos_lut));
1049 return err_pos_lut[din];
1050}
1051static int chk_no_err_only(unsigned short *chk_syndrome_list, unsigned short *err_info)
1052{
1053 if ((chk_syndrome_list[0] | chk_syndrome_list[1] |
1054 chk_syndrome_list[2] | chk_syndrome_list[3] |
1055 chk_syndrome_list[4] | chk_syndrome_list[5] |
1056 chk_syndrome_list[6] | chk_syndrome_list[7]) != 0x0) {
1057 return -EINVAL;
1058 } else {
1059 err_info[0] = 0x0;
1060 return 0;
1061 }
1062}
1063static int chk_1_err_only(unsigned short *chk_syndrome_list, unsigned short *err_info)
1064{
1065 unsigned short tmp0, tmp1, tmp2, tmp3, tmp4, tmp5, tmp6;
1066 tmp0 = gf4096_mul(chk_syndrome_list[1], gf4096_inv(chk_syndrome_list[0]));
1067 tmp1 = gf4096_mul(chk_syndrome_list[2], gf4096_inv(chk_syndrome_list[1]));
1068 tmp2 = gf4096_mul(chk_syndrome_list[3], gf4096_inv(chk_syndrome_list[2]));
1069 tmp3 = gf4096_mul(chk_syndrome_list[4], gf4096_inv(chk_syndrome_list[3]));
1070 tmp4 = gf4096_mul(chk_syndrome_list[5], gf4096_inv(chk_syndrome_list[4]));
1071 tmp5 = gf4096_mul(chk_syndrome_list[6], gf4096_inv(chk_syndrome_list[5]));
1072 tmp6 = gf4096_mul(chk_syndrome_list[7], gf4096_inv(chk_syndrome_list[6]));
1073 if ((tmp0 == tmp1) & (tmp1 == tmp2) & (tmp2 == tmp3) & (tmp3 == tmp4) & (tmp4 == tmp5) & (tmp5 == tmp6)) {
1074 err_info[0] = 0x1; // encode 1-symbol error as 0x1
1075 err_info[1] = err_pos(tmp0);
1076 err_info[1] = (unsigned short)(0x55e - err_info[1]);
1077 err_info[5] = chk_syndrome_list[0];
1078 return 0;
1079 } else
1080 return -EINVAL;
1081}
1082static int chk_2_err_only(unsigned short *chk_syndrome_list, unsigned short *err_info)
1083{
1084 unsigned short tmp0, tmp1, tmp2, tmp3, tmp4, tmp5, tmp6, tmp7;
1085 unsigned short coefs[4];
1086 unsigned short err_pats[4];
1087 int found_num_root = 0;
1088 unsigned short bit2_root0, bit2_root1;
1089 unsigned short bit2_root0_inv, bit2_root1_inv;
1090 unsigned short err_loc_eqn, test_root;
1091 unsigned short bit2_loc0, bit2_loc1;
1092 unsigned short bit2_pat0, bit2_pat1;
1093
1094 find_2x2_soln(chk_syndrome_list[1],
1095 chk_syndrome_list[0],
1096 chk_syndrome_list[2], chk_syndrome_list[1], chk_syndrome_list[2], chk_syndrome_list[3], coefs);
1097 for (test_root = 0x1; test_root < 0xfff; test_root++) {
1098 err_loc_eqn =
1099 gf4096_mul(coefs[1], gf4096_mul(test_root, test_root)) ^ gf4096_mul(coefs[0], test_root) ^ 0x1;
1100 if (err_loc_eqn == 0x0) {
1101 if (found_num_root == 0) {
1102 bit2_root0 = test_root;
1103 found_num_root = 1;
1104 } else if (found_num_root == 1) {
1105 bit2_root1 = test_root;
1106 found_num_root = 2;
1107 break;
1108 }
1109 }
1110 }
1111 if (found_num_root != 2)
1112 return -EINVAL;
1113 else {
1114 bit2_root0_inv = gf4096_inv(bit2_root0);
1115 bit2_root1_inv = gf4096_inv(bit2_root1);
1116 find_2bit_err_pats(chk_syndrome_list[0],
1117 chk_syndrome_list[1], bit2_root0_inv, bit2_root1_inv, err_pats);
1118 bit2_pat0 = err_pats[0];
1119 bit2_pat1 = err_pats[1];
1120 //for(x+1)
1121 tmp0 = gf4096_mul(gf4096_mul(bit2_root0_inv, bit2_root0_inv), gf4096_mul(bit2_root0_inv, bit2_root0_inv)); //rinv0^4
1122 tmp1 = gf4096_mul(bit2_root0_inv, tmp0); //rinv0^5
1123 tmp2 = gf4096_mul(bit2_root0_inv, tmp1); //rinv0^6
1124 tmp3 = gf4096_mul(bit2_root0_inv, tmp2); //rinv0^7
1125 tmp4 = gf4096_mul(gf4096_mul(bit2_root1_inv, bit2_root1_inv), gf4096_mul(bit2_root1_inv, bit2_root1_inv)); //rinv1^4
1126 tmp5 = gf4096_mul(bit2_root1_inv, tmp4); //rinv1^5
1127 tmp6 = gf4096_mul(bit2_root1_inv, tmp5); //rinv1^6
1128 tmp7 = gf4096_mul(bit2_root1_inv, tmp6); //rinv1^7
1129 //check if only 2-bit error
1130 if ((chk_syndrome_list[4] ==
1131 (gf4096_mul(bit2_pat0, tmp0) ^
1132 gf4096_mul(bit2_pat1,
1133 tmp4))) & (chk_syndrome_list[5] ==
1134 (gf4096_mul(bit2_pat0, tmp1) ^
1135 gf4096_mul(bit2_pat1,
1136 tmp5))) &
1137 (chk_syndrome_list[6] ==
1138 (gf4096_mul(bit2_pat0, tmp2) ^
1139 gf4096_mul(bit2_pat1,
1140 tmp6))) & (chk_syndrome_list[7] ==
1141 (gf4096_mul(bit2_pat0, tmp3) ^ gf4096_mul(bit2_pat1, tmp7)))) {
1142 if ((err_pos(bit2_root0_inv) == 0xfff) | (err_pos(bit2_root1_inv) == 0xfff)) {
1143 return -EINVAL;
1144 } else {
1145 bit2_loc0 = 0x55e - err_pos(bit2_root0_inv);
1146 bit2_loc1 = 0x55e - err_pos(bit2_root1_inv);
1147 err_info[0] = 0x2; // encode 2-symbol error as 0x2
1148 err_info[1] = bit2_loc0;
1149 err_info[2] = bit2_loc1;
1150 err_info[5] = bit2_pat0;
1151 err_info[6] = bit2_pat1;
1152 return 0;
1153 }
1154 } else
1155 return -EINVAL;
1156 }
1157}
1158static int chk_3_err_only(unsigned short *chk_syndrome_list, unsigned short *err_info)
1159{
1160 unsigned short tmp0, tmp1, tmp2, tmp3, tmp4, tmp5;
1161 unsigned short coefs[4];
1162 unsigned short err_pats[4];
1163 int found_num_root = 0;
1164 unsigned short bit3_root0, bit3_root1, bit3_root2;
1165 unsigned short bit3_root0_inv, bit3_root1_inv, bit3_root2_inv;
1166 unsigned short err_loc_eqn, test_root;
1167
1168 find_3bit_err_coefs(chk_syndrome_list[0], chk_syndrome_list[1],
1169 chk_syndrome_list[2], chk_syndrome_list[3],
1170 chk_syndrome_list[4], chk_syndrome_list[5], coefs);
1171
1172 for (test_root = 0x1; test_root < 0xfff; test_root++) {
1173 err_loc_eqn = gf4096_mul(coefs[2],
1174 gf4096_mul(gf4096_mul(test_root, test_root),
1175 test_root)) ^ gf4096_mul(coefs[1], gf4096_mul(test_root, test_root))
1176 ^ gf4096_mul(coefs[0], test_root) ^ 0x1;
1177
1178 if (err_loc_eqn == 0x0) {
1179 if (found_num_root == 0) {
1180 bit3_root0 = test_root;
1181 found_num_root = 1;
1182 } else if (found_num_root == 1) {
1183 bit3_root1 = test_root;
1184 found_num_root = 2;
1185 } else if (found_num_root == 2) {
1186 bit3_root2 = test_root;
1187 found_num_root = 3;
1188 break;
1189 }
1190 }
1191 }
1192 if (found_num_root != 3)
1193 return -EINVAL;
1194 else {
1195 bit3_root0_inv = gf4096_inv(bit3_root0);
1196 bit3_root1_inv = gf4096_inv(bit3_root1);
1197 bit3_root2_inv = gf4096_inv(bit3_root2);
1198
1199 find_3bit_err_pats(chk_syndrome_list[0], chk_syndrome_list[1],
1200 chk_syndrome_list[2], bit3_root0_inv,
1201 bit3_root1_inv, bit3_root2_inv, err_pats);
1202
1203 //check if only 3-bit error
1204 tmp0 = gf4096_mul(bit3_root0_inv, bit3_root0_inv);
1205 tmp0 = gf4096_mul(tmp0, tmp0);
1206 tmp0 = gf4096_mul(tmp0, bit3_root0_inv);
1207 tmp0 = gf4096_mul(tmp0, bit3_root0_inv); //rinv0^6
1208 tmp1 = gf4096_mul(tmp0, bit3_root0_inv); //rinv0^7
1209 tmp2 = gf4096_mul(bit3_root1_inv, bit3_root1_inv);
1210 tmp2 = gf4096_mul(tmp2, tmp2);
1211 tmp2 = gf4096_mul(tmp2, bit3_root1_inv);
1212 tmp2 = gf4096_mul(tmp2, bit3_root1_inv); //rinv1^6
1213 tmp3 = gf4096_mul(tmp2, bit3_root1_inv); //rinv1^7
1214 tmp4 = gf4096_mul(bit3_root2_inv, bit3_root2_inv);
1215 tmp4 = gf4096_mul(tmp4, tmp4);
1216 tmp4 = gf4096_mul(tmp4, bit3_root2_inv);
1217 tmp4 = gf4096_mul(tmp4, bit3_root2_inv); //rinv2^6
1218 tmp5 = gf4096_mul(tmp4, bit3_root2_inv); //rinv2^7
1219
1220 //check if only 3 errors
1221 if ((chk_syndrome_list[6] == (gf4096_mul(err_pats[0], tmp0) ^
1222 gf4096_mul(err_pats[1], tmp2) ^
1223 gf4096_mul(err_pats[2], tmp4))) &
1224 (chk_syndrome_list[7] == (gf4096_mul(err_pats[0], tmp1) ^
1225 gf4096_mul(err_pats[1], tmp3) ^ gf4096_mul(err_pats[2], tmp5)))) {
1226 if ((err_pos(bit3_root0_inv) == 0xfff) |
1227 (err_pos(bit3_root1_inv) == 0xfff) | (err_pos(bit3_root2_inv) == 0xfff)) {
1228 return -EINVAL;
1229 } else {
1230 err_info[0] = 0x3;
1231 err_info[1] = (0x55e - err_pos(bit3_root0_inv));
1232 err_info[2] = (0x55e - err_pos(bit3_root1_inv));
1233 err_info[3] = (0x55e - err_pos(bit3_root2_inv));
1234 err_info[5] = err_pats[0];
1235 err_info[6] = err_pats[1];
1236 err_info[7] = err_pats[2];
1237 return 0;
1238 }
1239 } else
1240 return -EINVAL;
1241 }
1242}
1243static int chk_4_err_only(unsigned short *chk_syndrome_list, unsigned short *err_info)
1244{
1245 unsigned short coefs[4];
1246 unsigned short err_pats[4];
1247 int found_num_root = 0;
1248 unsigned short bit4_root0, bit4_root1, bit4_root2, bit4_root3;
1249 unsigned short bit4_root0_inv, bit4_root1_inv, bit4_root2_inv, bit4_root3_inv;
1250 unsigned short err_loc_eqn, test_root;
1251
1252 find_4bit_err_coefs(chk_syndrome_list[0],
1253 chk_syndrome_list[1],
1254 chk_syndrome_list[2],
1255 chk_syndrome_list[3],
1256 chk_syndrome_list[4],
1257 chk_syndrome_list[5], chk_syndrome_list[6], chk_syndrome_list[7], coefs);
1258
1259 for (test_root = 0x1; test_root < 0xfff; test_root++) {
1260 err_loc_eqn =
1261 gf4096_mul(coefs[3],
1262 gf4096_mul(gf4096_mul
1263 (gf4096_mul(test_root, test_root),
1264 test_root),
1265 test_root)) ^ gf4096_mul(coefs[2],
1266 gf4096_mul
1267 (gf4096_mul(test_root, test_root), test_root))
1268 ^ gf4096_mul(coefs[1], gf4096_mul(test_root, test_root)) ^ gf4096_mul(coefs[0], test_root)
1269 ^ 0x1;
1270 if (err_loc_eqn == 0x0) {
1271 if (found_num_root == 0) {
1272 bit4_root0 = test_root;
1273 found_num_root = 1;
1274 } else if (found_num_root == 1) {
1275 bit4_root1 = test_root;
1276 found_num_root = 2;
1277 } else if (found_num_root == 2) {
1278 bit4_root2 = test_root;
1279 found_num_root = 3;
1280 } else {
1281 found_num_root = 4;
1282 bit4_root3 = test_root;
1283 break;
1284 }
1285 }
1286 }
1287 if (found_num_root != 4) {
1288 return -EINVAL;
1289 } else {
1290 bit4_root0_inv = gf4096_inv(bit4_root0);
1291 bit4_root1_inv = gf4096_inv(bit4_root1);
1292 bit4_root2_inv = gf4096_inv(bit4_root2);
1293 bit4_root3_inv = gf4096_inv(bit4_root3);
1294 find_4bit_err_pats(chk_syndrome_list[0],
1295 chk_syndrome_list[1],
1296 chk_syndrome_list[2],
1297 chk_syndrome_list[3],
1298 bit4_root0_inv, bit4_root1_inv, bit4_root2_inv, bit4_root3_inv, err_pats);
1299 err_info[0] = 0x4;
1300 err_info[1] = (0x55e - err_pos(bit4_root0_inv));
1301 err_info[2] = (0x55e - err_pos(bit4_root1_inv));
1302 err_info[3] = (0x55e - err_pos(bit4_root2_inv));
1303 err_info[4] = (0x55e - err_pos(bit4_root3_inv));
1304 err_info[5] = err_pats[0];
1305 err_info[6] = err_pats[1];
1306 err_info[7] = err_pats[2];
1307 err_info[8] = err_pats[3];
1308 return 0;
1309 }
1310}
1311
1312void correct_12bit_symbol(unsigned char *buf, unsigned short sym,
1313 unsigned short val)
1314{
1315 if (unlikely(sym > 1366)) {
1316 printk(KERN_ERR "Error: symbol %d out of range; cannot correct\n", sym);
1317 } else if (sym == 0) {
1318 buf[0] ^= val;
1319 } else if (sym & 1) {
1320 buf[1+(3*(sym-1))/2] ^= (val >> 4);
1321 buf[2+(3*(sym-1))/2] ^= ((val & 0xf) << 4);
1322 } else {
1323 buf[2+(3*(sym-2))/2] ^= (val >> 8);
1324 buf[3+(3*(sym-2))/2] ^= (val & 0xff);
1325 }
1326}
1327
1328static int debugecc = 0;
1329module_param(debugecc, int, 0644);
1330
1331int cafe_correct_ecc(unsigned char *buf,
1332 unsigned short *chk_syndrome_list)
1333{
1334 unsigned short err_info[9];
1335 int i;
1336
1337 if (debugecc) {
1338 printk(KERN_WARNING "cafe_correct_ecc invoked. Syndromes %x %x %x %x %x %x %x %x\n",
1339 chk_syndrome_list[0], chk_syndrome_list[1],
1340 chk_syndrome_list[2], chk_syndrome_list[3],
1341 chk_syndrome_list[4], chk_syndrome_list[5],
1342 chk_syndrome_list[6], chk_syndrome_list[7]);
1343 for (i=0; i < 2048; i+=16) {
1344 printk(KERN_WARNING "D %04x: %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x\n",
1345 i,
1346 buf[i], buf[i+1], buf[i+2], buf[i+3],
1347 buf[i+4], buf[i+5], buf[i+6], buf[i+7],
1348 buf[i+8], buf[i+9], buf[i+10], buf[i+11],
1349 buf[i+12], buf[i+13], buf[i+14], buf[i+15]);
1350 }
1351 for ( ; i < 2112; i+=16) {
1352 printk(KERN_WARNING "O %02x: %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x\n",
1353 i - 2048,
1354 buf[i], buf[i+1], buf[i+2], buf[i+3],
1355 buf[i+4], buf[i+5], buf[i+6], buf[i+7],
1356 buf[i+8], buf[i+9], buf[i+10], buf[i+11],
1357 buf[i+12], buf[i+13], buf[i+14], buf[i+15]);
1358 }
1359 }
1360
1361
1362
1363 if (chk_no_err_only(chk_syndrome_list, err_info) &&
1364 chk_1_err_only(chk_syndrome_list, err_info) &&
1365 chk_2_err_only(chk_syndrome_list, err_info) &&
1366 chk_3_err_only(chk_syndrome_list, err_info) &&
1367 chk_4_err_only(chk_syndrome_list, err_info)) {
1368 return -EIO;
1369 }
1370
1371 for (i=0; i < err_info[0]; i++) {
1372 if (debugecc)
1373 printk(KERN_WARNING "Correct symbol %d with 0x%03x\n",
1374 err_info[1+i], err_info[5+i]);
1375
1376 correct_12bit_symbol(buf, err_info[1+i], err_info[5+i]);
1377 }
1378
1379 return err_info[0];
1380}
1381
diff --git a/drivers/mtd/nand/cafe.c b/drivers/mtd/nand/cafe_nand.c
index c328a7514510..cff969d05d4a 100644
--- a/drivers/mtd/nand/cafe.c
+++ b/drivers/mtd/nand/cafe_nand.c
@@ -11,6 +11,7 @@
11#undef DEBUG 11#undef DEBUG
12#include <linux/mtd/mtd.h> 12#include <linux/mtd/mtd.h>
13#include <linux/mtd/nand.h> 13#include <linux/mtd/nand.h>
14#include <linux/rslib.h>
14#include <linux/pci.h> 15#include <linux/pci.h>
15#include <linux/delay.h> 16#include <linux/delay.h>
16#include <linux/interrupt.h> 17#include <linux/interrupt.h>
@@ -46,13 +47,14 @@
46#define CAFE_GLOBAL_IRQ_MASK 0x300c 47#define CAFE_GLOBAL_IRQ_MASK 0x300c
47#define CAFE_NAND_RESET 0x3034 48#define CAFE_NAND_RESET 0x3034
48 49
49int cafe_correct_ecc(unsigned char *buf, 50/* Missing from the datasheet: bit 19 of CTRL1 sets CE0 vs. CE1 */
50 unsigned short *chk_syndrome_list); 51#define CTRL1_CHIPSELECT (1<<19)
51 52
52struct cafe_priv { 53struct cafe_priv {
53 struct nand_chip nand; 54 struct nand_chip nand;
54 struct pci_dev *pdev; 55 struct pci_dev *pdev;
55 void __iomem *mmio; 56 void __iomem *mmio;
57 struct rs_control *rs;
56 uint32_t ctl1; 58 uint32_t ctl1;
57 uint32_t ctl2; 59 uint32_t ctl2;
58 int datalen; 60 int datalen;
@@ -195,8 +197,8 @@ static void cafe_nand_cmdfunc(struct mtd_info *mtd, unsigned command,
195 197
196 cafe->data_pos = cafe->datalen = 0; 198 cafe->data_pos = cafe->datalen = 0;
197 199
198 /* Set command valid bit */ 200 /* Set command valid bit, mask in the chip select bit */
199 ctl1 = 0x80000000 | command; 201 ctl1 = 0x80000000 | command | (cafe->ctl1 & CTRL1_CHIPSELECT);
200 202
201 /* Set RD or WR bits as appropriate */ 203 /* Set RD or WR bits as appropriate */
202 if (command == NAND_CMD_READID || command == NAND_CMD_STATUS) { 204 if (command == NAND_CMD_READID || command == NAND_CMD_STATUS) {
@@ -309,8 +311,16 @@ static void cafe_nand_cmdfunc(struct mtd_info *mtd, unsigned command,
309 311
310static void cafe_select_chip(struct mtd_info *mtd, int chipnr) 312static void cafe_select_chip(struct mtd_info *mtd, int chipnr)
311{ 313{
312 //struct cafe_priv *cafe = mtd->priv; 314 struct cafe_priv *cafe = mtd->priv;
313 // cafe_dev_dbg(&cafe->pdev->dev, "select_chip %d\n", chipnr); 315
316 cafe_dev_dbg(&cafe->pdev->dev, "select_chip %d\n", chipnr);
317
318 /* Mask the appropriate bit into the stored value of ctl1
319 which will be used by cafe_nand_cmdfunc() */
320 if (chipnr)
321 cafe->ctl1 |= CTRL1_CHIPSELECT;
322 else
323 cafe->ctl1 &= ~CTRL1_CHIPSELECT;
314} 324}
315 325
316static int cafe_nand_interrupt(int irq, void *id) 326static int cafe_nand_interrupt(int irq, void *id)
@@ -374,28 +384,66 @@ static int cafe_nand_read_page(struct mtd_info *mtd, struct nand_chip *chip,
374 chip->read_buf(mtd, chip->oob_poi, mtd->oobsize); 384 chip->read_buf(mtd, chip->oob_poi, mtd->oobsize);
375 385
376 if (checkecc && cafe_readl(cafe, NAND_ECC_RESULT) & (1<<18)) { 386 if (checkecc && cafe_readl(cafe, NAND_ECC_RESULT) & (1<<18)) {
377 unsigned short syn[8]; 387 unsigned short syn[8], pat[4];
378 int i; 388 int pos[4];
389 u8 *oob = chip->oob_poi;
390 int i, n;
379 391
380 for (i=0; i<8; i+=2) { 392 for (i=0; i<8; i+=2) {
381 uint32_t tmp = cafe_readl(cafe, NAND_ECC_SYN01 + (i*2)); 393 uint32_t tmp = cafe_readl(cafe, NAND_ECC_SYN01 + (i*2));
382 syn[i] = tmp & 0xfff; 394 syn[i] = cafe->rs->index_of[tmp & 0xfff];
383 syn[i+1] = (tmp >> 16) & 0xfff; 395 syn[i+1] = cafe->rs->index_of[(tmp >> 16) & 0xfff];
396 }
397
398 n = decode_rs16(cafe->rs, NULL, NULL, 1367, syn, 0, pos, 0,
399 pat);
400
401 for (i = 0; i < n; i++) {
402 int p = pos[i];
403
404 /* The 12-bit symbols are mapped to bytes here */
405
406 if (p > 1374) {
407 /* out of range */
408 n = -1374;
409 } else if (p == 0) {
410 /* high four bits do not correspond to data */
411 if (pat[i] > 0xff)
412 n = -2048;
413 else
414 buf[0] ^= pat[i];
415 } else if (p == 1365) {
416 buf[2047] ^= pat[i] >> 4;
417 oob[0] ^= pat[i] << 4;
418 } else if (p > 1365) {
419 if ((p & 1) == 1) {
420 oob[3*p/2 - 2048] ^= pat[i] >> 4;
421 oob[3*p/2 - 2047] ^= pat[i] << 4;
422 } else {
423 oob[3*p/2 - 2049] ^= pat[i] >> 8;
424 oob[3*p/2 - 2048] ^= pat[i];
425 }
426 } else if ((p & 1) == 1) {
427 buf[3*p/2] ^= pat[i] >> 4;
428 buf[3*p/2 + 1] ^= pat[i] << 4;
429 } else {
430 buf[3*p/2 - 1] ^= pat[i] >> 8;
431 buf[3*p/2] ^= pat[i];
432 }
384 } 433 }
385 434
386 if ((i = cafe_correct_ecc(buf, syn)) < 0) { 435 if (n < 0) {
387 dev_dbg(&cafe->pdev->dev, "Failed to correct ECC at %08x\n", 436 dev_dbg(&cafe->pdev->dev, "Failed to correct ECC at %08x\n",
388 cafe_readl(cafe, NAND_ADDR2) * 2048); 437 cafe_readl(cafe, NAND_ADDR2) * 2048);
389 for (i=0; i< 0x5c; i+=4) 438 for (i = 0; i < 0x5c; i += 4)
390 printk("Register %x: %08x\n", i, readl(cafe->mmio + i)); 439 printk("Register %x: %08x\n", i, readl(cafe->mmio + i));
391 mtd->ecc_stats.failed++; 440 mtd->ecc_stats.failed++;
392 } else { 441 } else {
393 dev_dbg(&cafe->pdev->dev, "Corrected %d symbol errors\n", i); 442 dev_dbg(&cafe->pdev->dev, "Corrected %d symbol errors\n", n);
394 mtd->ecc_stats.corrected += i; 443 mtd->ecc_stats.corrected += n;
395 } 444 }
396 } 445 }
397 446
398
399 return 0; 447 return 0;
400} 448}
401 449
@@ -416,7 +464,7 @@ static uint8_t cafe_mirror_pattern_512[] = { 0xBC };
416 464
417static struct nand_bbt_descr cafe_bbt_main_descr_2048 = { 465static struct nand_bbt_descr cafe_bbt_main_descr_2048 = {
418 .options = NAND_BBT_LASTBLOCK | NAND_BBT_CREATE | NAND_BBT_WRITE 466 .options = NAND_BBT_LASTBLOCK | NAND_BBT_CREATE | NAND_BBT_WRITE
419 | NAND_BBT_2BIT | NAND_BBT_VERSION | NAND_BBT_PERCHIP, 467 | NAND_BBT_2BIT | NAND_BBT_VERSION,
420 .offs = 14, 468 .offs = 14,
421 .len = 4, 469 .len = 4,
422 .veroffs = 18, 470 .veroffs = 18,
@@ -426,7 +474,7 @@ static struct nand_bbt_descr cafe_bbt_main_descr_2048 = {
426 474
427static struct nand_bbt_descr cafe_bbt_mirror_descr_2048 = { 475static struct nand_bbt_descr cafe_bbt_mirror_descr_2048 = {
428 .options = NAND_BBT_LASTBLOCK | NAND_BBT_CREATE | NAND_BBT_WRITE 476 .options = NAND_BBT_LASTBLOCK | NAND_BBT_CREATE | NAND_BBT_WRITE
429 | NAND_BBT_2BIT | NAND_BBT_VERSION | NAND_BBT_PERCHIP, 477 | NAND_BBT_2BIT | NAND_BBT_VERSION,
430 .offs = 14, 478 .offs = 14,
431 .len = 4, 479 .len = 4,
432 .veroffs = 18, 480 .veroffs = 18,
@@ -442,7 +490,7 @@ static struct nand_ecclayout cafe_oobinfo_512 = {
442 490
443static struct nand_bbt_descr cafe_bbt_main_descr_512 = { 491static struct nand_bbt_descr cafe_bbt_main_descr_512 = {
444 .options = NAND_BBT_LASTBLOCK | NAND_BBT_CREATE | NAND_BBT_WRITE 492 .options = NAND_BBT_LASTBLOCK | NAND_BBT_CREATE | NAND_BBT_WRITE
445 | NAND_BBT_2BIT | NAND_BBT_VERSION | NAND_BBT_PERCHIP, 493 | NAND_BBT_2BIT | NAND_BBT_VERSION,
446 .offs = 14, 494 .offs = 14,
447 .len = 1, 495 .len = 1,
448 .veroffs = 15, 496 .veroffs = 15,
@@ -452,7 +500,7 @@ static struct nand_bbt_descr cafe_bbt_main_descr_512 = {
452 500
453static struct nand_bbt_descr cafe_bbt_mirror_descr_512 = { 501static struct nand_bbt_descr cafe_bbt_mirror_descr_512 = {
454 .options = NAND_BBT_LASTBLOCK | NAND_BBT_CREATE | NAND_BBT_WRITE 502 .options = NAND_BBT_LASTBLOCK | NAND_BBT_CREATE | NAND_BBT_WRITE
455 | NAND_BBT_2BIT | NAND_BBT_VERSION | NAND_BBT_PERCHIP, 503 | NAND_BBT_2BIT | NAND_BBT_VERSION,
456 .offs = 14, 504 .offs = 14,
457 .len = 1, 505 .len = 1,
458 .veroffs = 15, 506 .veroffs = 15,
@@ -525,6 +573,48 @@ static int cafe_nand_block_bad(struct mtd_info *mtd, loff_t ofs, int getchip)
525 return 0; 573 return 0;
526} 574}
527 575
576/* F_2[X]/(X**6+X+1) */
577static unsigned short __devinit gf64_mul(u8 a, u8 b)
578{
579 u8 c;
580 unsigned int i;
581
582 c = 0;
583 for (i = 0; i < 6; i++) {
584 if (a & 1)
585 c ^= b;
586 a >>= 1;
587 b <<= 1;
588 if ((b & 0x40) != 0)
589 b ^= 0x43;
590 }
591
592 return c;
593}
594
595/* F_64[X]/(X**2+X+A**-1) with A the generator of F_64[X] */
596static u16 __devinit gf4096_mul(u16 a, u16 b)
597{
598 u8 ah, al, bh, bl, ch, cl;
599
600 ah = a >> 6;
601 al = a & 0x3f;
602 bh = b >> 6;
603 bl = b & 0x3f;
604
605 ch = gf64_mul(ah ^ al, bh ^ bl) ^ gf64_mul(al, bl);
606 cl = gf64_mul(gf64_mul(ah, bh), 0x21) ^ gf64_mul(al, bl);
607
608 return (ch << 6) ^ cl;
609}
610
611static int __devinit cafe_mul(int x)
612{
613 if (x == 0)
614 return 1;
615 return gf4096_mul(x, 0xe01);
616}
617
528static int __devinit cafe_nand_probe(struct pci_dev *pdev, 618static int __devinit cafe_nand_probe(struct pci_dev *pdev,
529 const struct pci_device_id *ent) 619 const struct pci_device_id *ent)
530{ 620{
@@ -564,6 +654,12 @@ static int __devinit cafe_nand_probe(struct pci_dev *pdev,
564 } 654 }
565 cafe->nand.buffers = (void *)cafe->dmabuf + 2112; 655 cafe->nand.buffers = (void *)cafe->dmabuf + 2112;
566 656
657 cafe->rs = init_rs_non_canonical(12, &cafe_mul, 0, 1, 8);
658 if (!cafe->rs) {
659 err = -ENOMEM;
660 goto out_ior;
661 }
662
567 cafe->nand.cmdfunc = cafe_nand_cmdfunc; 663 cafe->nand.cmdfunc = cafe_nand_cmdfunc;
568 cafe->nand.dev_ready = cafe_device_ready; 664 cafe->nand.dev_ready = cafe_device_ready;
569 cafe->nand.read_byte = cafe_read_byte; 665 cafe->nand.read_byte = cafe_read_byte;
@@ -646,7 +742,7 @@ static int __devinit cafe_nand_probe(struct pci_dev *pdev,
646 cafe_readl(cafe, GLOBAL_CTRL), cafe_readl(cafe, GLOBAL_IRQ_MASK)); 742 cafe_readl(cafe, GLOBAL_CTRL), cafe_readl(cafe, GLOBAL_IRQ_MASK));
647 743
648 /* Scan to find existence of the device */ 744 /* Scan to find existence of the device */
649 if (nand_scan_ident(mtd, 1)) { 745 if (nand_scan_ident(mtd, 2)) {
650 err = -ENXIO; 746 err = -ENXIO;
651 goto out_irq; 747 goto out_irq;
652 } 748 }
@@ -713,6 +809,7 @@ static void __devexit cafe_nand_remove(struct pci_dev *pdev)
713 cafe_writel(cafe, ~1 & cafe_readl(cafe, GLOBAL_IRQ_MASK), GLOBAL_IRQ_MASK); 809 cafe_writel(cafe, ~1 & cafe_readl(cafe, GLOBAL_IRQ_MASK), GLOBAL_IRQ_MASK);
714 free_irq(pdev->irq, mtd); 810 free_irq(pdev->irq, mtd);
715 nand_release(mtd); 811 nand_release(mtd);
812 free_rs(cafe->rs);
716 pci_iounmap(pdev, cafe->mmio); 813 pci_iounmap(pdev, cafe->mmio);
717 dma_free_coherent(&cafe->pdev->dev, 2112, cafe->dmabuf, cafe->dmaaddr); 814 dma_free_coherent(&cafe->pdev->dev, 2112, cafe->dmabuf, cafe->dmaaddr);
718 kfree(mtd); 815 kfree(mtd);
diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c
index 04de315e4937..7e68203fe1ba 100644
--- a/drivers/mtd/nand/nand_base.c
+++ b/drivers/mtd/nand/nand_base.c
@@ -303,28 +303,27 @@ static int nand_block_bad(struct mtd_info *mtd, loff_t ofs, int getchip)
303 struct nand_chip *chip = mtd->priv; 303 struct nand_chip *chip = mtd->priv;
304 u16 bad; 304 u16 bad;
305 305
306 page = (int)(ofs >> chip->page_shift) & chip->pagemask;
307
306 if (getchip) { 308 if (getchip) {
307 page = (int)(ofs >> chip->page_shift);
308 chipnr = (int)(ofs >> chip->chip_shift); 309 chipnr = (int)(ofs >> chip->chip_shift);
309 310
310 nand_get_device(chip, mtd, FL_READING); 311 nand_get_device(chip, mtd, FL_READING);
311 312
312 /* Select the NAND device */ 313 /* Select the NAND device */
313 chip->select_chip(mtd, chipnr); 314 chip->select_chip(mtd, chipnr);
314 } else 315 }
315 page = (int)(ofs >> chip->page_shift);
316 316
317 if (chip->options & NAND_BUSWIDTH_16) { 317 if (chip->options & NAND_BUSWIDTH_16) {
318 chip->cmdfunc(mtd, NAND_CMD_READOOB, chip->badblockpos & 0xFE, 318 chip->cmdfunc(mtd, NAND_CMD_READOOB, chip->badblockpos & 0xFE,
319 page & chip->pagemask); 319 page);
320 bad = cpu_to_le16(chip->read_word(mtd)); 320 bad = cpu_to_le16(chip->read_word(mtd));
321 if (chip->badblockpos & 0x1) 321 if (chip->badblockpos & 0x1)
322 bad >>= 8; 322 bad >>= 8;
323 if ((bad & 0xFF) != 0xff) 323 if ((bad & 0xFF) != 0xff)
324 res = 1; 324 res = 1;
325 } else { 325 } else {
326 chip->cmdfunc(mtd, NAND_CMD_READOOB, chip->badblockpos, 326 chip->cmdfunc(mtd, NAND_CMD_READOOB, chip->badblockpos, page);
327 page & chip->pagemask);
328 if (chip->read_byte(mtd) != 0xff) 327 if (chip->read_byte(mtd) != 0xff)
329 res = 1; 328 res = 1;
330 } 329 }
diff --git a/drivers/mtd/nand/plat_nand.c b/drivers/mtd/nand/plat_nand.c
new file mode 100644
index 000000000000..cd725fc5e813
--- /dev/null
+++ b/drivers/mtd/nand/plat_nand.c
@@ -0,0 +1,150 @@
1/*
2 * Generic NAND driver
3 *
4 * Author: Vitaly Wool <vitalywool@gmail.com>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 *
10 */
11
12#include <linux/io.h>
13#include <linux/module.h>
14#include <linux/platform_device.h>
15#include <linux/slab.h>
16#include <linux/mtd/mtd.h>
17#include <linux/mtd/nand.h>
18#include <linux/mtd/partitions.h>
19
20struct plat_nand_data {
21 struct nand_chip chip;
22 struct mtd_info mtd;
23 void __iomem *io_base;
24#ifdef CONFIG_MTD_PARTITIONS
25 int nr_parts;
26 struct mtd_partition *parts;
27#endif
28};
29
30/*
31 * Probe for the NAND device.
32 */
33static int __init plat_nand_probe(struct platform_device *pdev)
34{
35 struct platform_nand_data *pdata = pdev->dev.platform_data;
36 struct plat_nand_data *data;
37 int res = 0;
38
39 /* Allocate memory for the device structure (and zero it) */
40 data = kzalloc(sizeof(struct plat_nand_data), GFP_KERNEL);
41 if (!data) {
42 dev_err(&pdev->dev, "failed to allocate device structure.\n");
43 return -ENOMEM;
44 }
45
46 data->io_base = ioremap(pdev->resource[0].start,
47 pdev->resource[0].end - pdev->resource[0].start + 1);
48 if (data->io_base == NULL) {
49 dev_err(&pdev->dev, "ioremap failed\n");
50 kfree(data);
51 return -EIO;
52 }
53
54 data->chip.priv = &data;
55 data->mtd.priv = &data->chip;
56 data->mtd.owner = THIS_MODULE;
57
58 data->chip.IO_ADDR_R = data->io_base;
59 data->chip.IO_ADDR_W = data->io_base;
60 data->chip.cmd_ctrl = pdata->ctrl.cmd_ctrl;
61 data->chip.dev_ready = pdata->ctrl.dev_ready;
62 data->chip.select_chip = pdata->ctrl.select_chip;
63 data->chip.chip_delay = pdata->chip.chip_delay;
64 data->chip.options |= pdata->chip.options;
65
66 data->chip.ecc.hwctl = pdata->ctrl.hwcontrol;
67 data->chip.ecc.layout = pdata->chip.ecclayout;
68 data->chip.ecc.mode = NAND_ECC_SOFT;
69
70 platform_set_drvdata(pdev, data);
71
72 /* Scan to find existance of the device */
73 if (nand_scan(&data->mtd, 1)) {
74 res = -ENXIO;
75 goto out;
76 }
77
78#ifdef CONFIG_MTD_PARTITIONS
79 if (pdata->chip.part_probe_types) {
80 res = parse_mtd_partitions(&data->mtd,
81 pdata->chip.part_probe_types,
82 &data->parts, 0);
83 if (res > 0) {
84 add_mtd_partitions(&data->mtd, data->parts, res);
85 return 0;
86 }
87 }
88 if (pdata->chip.partitions) {
89 data->parts = pdata->chip.partitions;
90 res = add_mtd_partitions(&data->mtd, data->parts,
91 pdata->chip.nr_partitions);
92 } else
93#endif
94 res = add_mtd_device(&data->mtd);
95
96 if (!res)
97 return res;
98
99 nand_release(&data->mtd);
100out:
101 platform_set_drvdata(pdev, NULL);
102 iounmap(data->io_base);
103 kfree(data);
104 return res;
105}
106
107/*
108 * Remove a NAND device.
109 */
110static int __devexit plat_nand_remove(struct platform_device *pdev)
111{
112 struct plat_nand_data *data = platform_get_drvdata(pdev);
113 struct platform_nand_data *pdata = pdev->dev.platform_data;
114
115 nand_release(&data->mtd);
116#ifdef CONFIG_MTD_PARTITIONS
117 if (data->parts && data->parts != pdata->chip.partitions)
118 kfree(data->parts);
119#endif
120 iounmap(data->io_base);
121 kfree(data);
122
123 return 0;
124}
125
126static struct platform_driver plat_nand_driver = {
127 .probe = plat_nand_probe,
128 .remove = plat_nand_remove,
129 .driver = {
130 .name = "gen_nand",
131 .owner = THIS_MODULE,
132 },
133};
134
135static int __init plat_nand_init(void)
136{
137 return platform_driver_register(&plat_nand_driver);
138}
139
140static void __exit plat_nand_exit(void)
141{
142 platform_driver_unregister(&plat_nand_driver);
143}
144
145module_init(plat_nand_init);
146module_exit(plat_nand_exit);
147
148MODULE_LICENSE("GPL");
149MODULE_AUTHOR("Vitaly Wool");
150MODULE_DESCRIPTION("Simple generic NAND driver");
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-21 11:18:38 -0500