aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/mtd
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/mtd')
-rw-r--r--drivers/mtd/Kconfig30
-rw-r--r--drivers/mtd/chips/Kconfig12
-rw-r--r--drivers/mtd/chips/cfi_cmdset_0001.c93
-rw-r--r--drivers/mtd/chips/fwh_lock.h3
-rw-r--r--drivers/mtd/devices/Kconfig26
-rw-r--r--drivers/mtd/devices/Makefile1
-rw-r--r--drivers/mtd/devices/at91_dataflash26.c485
-rw-r--r--drivers/mtd/devices/block2mtd.c67
-rw-r--r--drivers/mtd/maps/Kconfig47
-rw-r--r--drivers/mtd/maps/Makefile2
-rw-r--r--drivers/mtd/maps/alchemy-flash.c9
-rw-r--r--drivers/mtd/maps/plat-ram.c3
-rw-r--r--drivers/mtd/maps/pmcmsp-flash.c184
-rw-r--r--drivers/mtd/maps/pmcmsp-ramroot.c105
-rw-r--r--drivers/mtd/mtd_blkdevs.c43
-rw-r--r--drivers/mtd/mtdchar.c2
-rw-r--r--drivers/mtd/nand/Kconfig58
-rw-r--r--drivers/mtd/nand/cafe.c25
-rw-r--r--drivers/mtd/nand/nand_base.c8
-rw-r--r--drivers/mtd/nand/nand_ids.c4
-rw-r--r--drivers/mtd/nand/nandsim.c518
-rw-r--r--drivers/mtd/onenand/Kconfig15
-rw-r--r--drivers/mtd/onenand/onenand_base.c21
23 files changed, 1522 insertions, 239 deletions
diff --git a/drivers/mtd/Kconfig b/drivers/mtd/Kconfig
index 6d1b91bf7ad5..c1b47db29bd2 100644
--- a/drivers/mtd/Kconfig
+++ b/drivers/mtd/Kconfig
@@ -1,8 +1,6 @@
1# $Id: Kconfig,v 1.11 2005/11/07 11:14:19 gleixner Exp $ 1# $Id: Kconfig,v 1.11 2005/11/07 11:14:19 gleixner Exp $
2 2
3menu "Memory Technology Devices (MTD)" 3menuconfig MTD
4
5config MTD
6 tristate "Memory Technology Device (MTD) support" 4 tristate "Memory Technology Device (MTD) support"
7 help 5 help
8 Memory Technology Devices are flash, RAM and similar chips, often 6 Memory Technology Devices are flash, RAM and similar chips, often
@@ -13,9 +11,10 @@ config MTD
13 them. It will also allow you to select individual drivers for 11 them. It will also allow you to select individual drivers for
14 particular hardware and users of MTD devices. If unsure, say N. 12 particular hardware and users of MTD devices. If unsure, say N.
15 13
14if MTD
15
16config MTD_DEBUG 16config MTD_DEBUG
17 bool "Debugging" 17 bool "Debugging"
18 depends on MTD
19 help 18 help
20 This turns on low-level debugging for the entire MTD sub-system. 19 This turns on low-level debugging for the entire MTD sub-system.
21 Normally, you should say 'N'. 20 Normally, you should say 'N'.
@@ -29,7 +28,6 @@ config MTD_DEBUG_VERBOSE
29 28
30config MTD_CONCAT 29config MTD_CONCAT
31 tristate "MTD concatenating support" 30 tristate "MTD concatenating support"
32 depends on MTD
33 help 31 help
34 Support for concatenating several MTD devices into a single 32 Support for concatenating several MTD devices into a single
35 (virtual) one. This allows you to have -for example- a JFFS(2) 33 (virtual) one. This allows you to have -for example- a JFFS(2)
@@ -38,7 +36,6 @@ config MTD_CONCAT
38 36
39config MTD_PARTITIONS 37config MTD_PARTITIONS
40 bool "MTD partitioning support" 38 bool "MTD partitioning support"
41 depends on MTD
42 help 39 help
43 If you have a device which needs to divide its flash chip(s) up 40 If you have a device which needs to divide its flash chip(s) up
44 into multiple 'partitions', each of which appears to the user as 41 into multiple 'partitions', each of which appears to the user as
@@ -153,11 +150,9 @@ config MTD_AFS_PARTS
153 'armflash' map driver (CONFIG_MTD_ARMFLASH) does this, for example. 150 'armflash' map driver (CONFIG_MTD_ARMFLASH) does this, for example.
154 151
155comment "User Modules And Translation Layers" 152comment "User Modules And Translation Layers"
156 depends on MTD
157 153
158config MTD_CHAR 154config MTD_CHAR
159 tristate "Direct char device access to MTD devices" 155 tristate "Direct char device access to MTD devices"
160 depends on MTD
161 help 156 help
162 This provides a character device for each MTD device present in 157 This provides a character device for each MTD device present in
163 the system, allowing the user to read and write directly to the 158 the system, allowing the user to read and write directly to the
@@ -166,12 +161,12 @@ config MTD_CHAR
166 161
167config MTD_BLKDEVS 162config MTD_BLKDEVS
168 tristate "Common interface to block layer for MTD 'translation layers'" 163 tristate "Common interface to block layer for MTD 'translation layers'"
169 depends on MTD && BLOCK 164 depends on BLOCK
170 default n 165 default n
171 166
172config MTD_BLOCK 167config MTD_BLOCK
173 tristate "Caching block device access to MTD devices" 168 tristate "Caching block device access to MTD devices"
174 depends on MTD && BLOCK 169 depends on BLOCK
175 select MTD_BLKDEVS 170 select MTD_BLKDEVS
176 ---help--- 171 ---help---
177 Although most flash chips have an erase size too large to be useful 172 Although most flash chips have an erase size too large to be useful
@@ -194,7 +189,7 @@ config MTD_BLOCK
194 189
195config MTD_BLOCK_RO 190config MTD_BLOCK_RO
196 tristate "Readonly block device access to MTD devices" 191 tristate "Readonly block device access to MTD devices"
197 depends on MTD_BLOCK!=y && MTD && BLOCK 192 depends on MTD_BLOCK!=y && BLOCK
198 select MTD_BLKDEVS 193 select MTD_BLKDEVS
199 help 194 help
200 This allows you to mount read-only file systems (such as cramfs) 195 This allows you to mount read-only file systems (such as cramfs)
@@ -206,7 +201,7 @@ config MTD_BLOCK_RO
206 201
207config FTL 202config FTL
208 tristate "FTL (Flash Translation Layer) support" 203 tristate "FTL (Flash Translation Layer) support"
209 depends on MTD && BLOCK 204 depends on BLOCK
210 select MTD_BLKDEVS 205 select MTD_BLKDEVS
211 ---help--- 206 ---help---
212 This provides support for the original Flash Translation Layer which 207 This provides support for the original Flash Translation Layer which
@@ -223,7 +218,7 @@ config FTL
223 218
224config NFTL 219config NFTL
225 tristate "NFTL (NAND Flash Translation Layer) support" 220 tristate "NFTL (NAND Flash Translation Layer) support"
226 depends on MTD && BLOCK 221 depends on BLOCK
227 select MTD_BLKDEVS 222 select MTD_BLKDEVS
228 ---help--- 223 ---help---
229 This provides support for the NAND Flash Translation Layer which is 224 This provides support for the NAND Flash Translation Layer which is
@@ -247,7 +242,7 @@ config NFTL_RW
247 242
248config INFTL 243config INFTL
249 tristate "INFTL (Inverse NAND Flash Translation Layer) support" 244 tristate "INFTL (Inverse NAND Flash Translation Layer) support"
250 depends on MTD && BLOCK 245 depends on BLOCK
251 select MTD_BLKDEVS 246 select MTD_BLKDEVS
252 ---help--- 247 ---help---
253 This provides support for the Inverse NAND Flash Translation 248 This provides support for the Inverse NAND Flash Translation
@@ -265,7 +260,7 @@ config INFTL
265 260
266config RFD_FTL 261config RFD_FTL
267 tristate "Resident Flash Disk (Flash Translation Layer) support" 262 tristate "Resident Flash Disk (Flash Translation Layer) support"
268 depends on MTD && BLOCK 263 depends on BLOCK
269 select MTD_BLKDEVS 264 select MTD_BLKDEVS
270 ---help--- 265 ---help---
271 This provides support for the flash translation layer known 266 This provides support for the flash translation layer known
@@ -276,7 +271,7 @@ config RFD_FTL
276 271
277config SSFDC 272config SSFDC
278 tristate "NAND SSFDC (SmartMedia) read only translation layer" 273 tristate "NAND SSFDC (SmartMedia) read only translation layer"
279 depends on MTD && BLOCK 274 depends on BLOCK
280 select MTD_BLKDEVS 275 select MTD_BLKDEVS
281 help 276 help
282 This enables read only access to SmartMedia formatted NAND 277 This enables read only access to SmartMedia formatted NAND
@@ -294,5 +289,4 @@ source "drivers/mtd/onenand/Kconfig"
294 289
295source "drivers/mtd/ubi/Kconfig" 290source "drivers/mtd/ubi/Kconfig"
296 291
297endmenu 292endif # MTD
298
diff --git a/drivers/mtd/chips/Kconfig b/drivers/mtd/chips/Kconfig
index 72e6d73beb40..d28e0fc85e12 100644
--- a/drivers/mtd/chips/Kconfig
+++ b/drivers/mtd/chips/Kconfig
@@ -6,7 +6,6 @@ menu "RAM/ROM/Flash chip drivers"
6 6
7config MTD_CFI 7config MTD_CFI
8 tristate "Detect flash chips by Common Flash Interface (CFI) probe" 8 tristate "Detect flash chips by Common Flash Interface (CFI) probe"
9 depends on MTD
10 select MTD_GEN_PROBE 9 select MTD_GEN_PROBE
11 help 10 help
12 The Common Flash Interface specification was developed by Intel, 11 The Common Flash Interface specification was developed by Intel,
@@ -18,7 +17,6 @@ config MTD_CFI
18 17
19config MTD_JEDECPROBE 18config MTD_JEDECPROBE
20 tristate "Detect non-CFI AMD/JEDEC-compatible flash chips" 19 tristate "Detect non-CFI AMD/JEDEC-compatible flash chips"
21 depends on MTD
22 select MTD_GEN_PROBE 20 select MTD_GEN_PROBE
23 help 21 help
24 This option enables JEDEC-style probing of flash chips which are not 22 This option enables JEDEC-style probing of flash chips which are not
@@ -213,21 +211,18 @@ config MTD_CFI_UTIL
213 211
214config MTD_RAM 212config MTD_RAM
215 tristate "Support for RAM chips in bus mapping" 213 tristate "Support for RAM chips in bus mapping"
216 depends on MTD
217 help 214 help
218 This option enables basic support for RAM chips accessed through 215 This option enables basic support for RAM chips accessed through
219 a bus mapping driver. 216 a bus mapping driver.
220 217
221config MTD_ROM 218config MTD_ROM
222 tristate "Support for ROM chips in bus mapping" 219 tristate "Support for ROM chips in bus mapping"
223 depends on MTD
224 help 220 help
225 This option enables basic support for ROM chips accessed through 221 This option enables basic support for ROM chips accessed through
226 a bus mapping driver. 222 a bus mapping driver.
227 223
228config MTD_ABSENT 224config MTD_ABSENT
229 tristate "Support for absent chips in bus mapping" 225 tristate "Support for absent chips in bus mapping"
230 depends on MTD
231 help 226 help
232 This option enables support for a dummy probing driver used to 227 This option enables support for a dummy probing driver used to
233 allocated placeholder MTD devices on systems that have socketed 228 allocated placeholder MTD devices on systems that have socketed
@@ -237,7 +232,6 @@ config MTD_ABSENT
237 with this driver will return -ENODEV upon access. 232 with this driver will return -ENODEV upon access.
238 233
239config MTD_OBSOLETE_CHIPS 234config MTD_OBSOLETE_CHIPS
240 depends on MTD
241 bool "Older (theoretically obsoleted now) drivers for non-CFI chips" 235 bool "Older (theoretically obsoleted now) drivers for non-CFI chips"
242 help 236 help
243 This option does not enable any code directly, but will allow you to 237 This option does not enable any code directly, but will allow you to
@@ -250,7 +244,7 @@ config MTD_OBSOLETE_CHIPS
250 244
251config MTD_AMDSTD 245config MTD_AMDSTD
252 tristate "AMD compatible flash chip support (non-CFI)" 246 tristate "AMD compatible flash chip support (non-CFI)"
253 depends on MTD && MTD_OBSOLETE_CHIPS && BROKEN 247 depends on MTD_OBSOLETE_CHIPS && BROKEN
254 help 248 help
255 This option enables support for flash chips using AMD-compatible 249 This option enables support for flash chips using AMD-compatible
256 commands, including some which are not CFI-compatible and hence 250 commands, including some which are not CFI-compatible and hence
@@ -260,7 +254,7 @@ config MTD_AMDSTD
260 254
261config MTD_SHARP 255config MTD_SHARP
262 tristate "pre-CFI Sharp chip support" 256 tristate "pre-CFI Sharp chip support"
263 depends on MTD && MTD_OBSOLETE_CHIPS 257 depends on MTD_OBSOLETE_CHIPS
264 help 258 help
265 This option enables support for flash chips using Sharp-compatible 259 This option enables support for flash chips using Sharp-compatible
266 commands, including some which are not CFI-compatible and hence 260 commands, including some which are not CFI-compatible and hence
@@ -268,7 +262,7 @@ config MTD_SHARP
268 262
269config MTD_JEDEC 263config MTD_JEDEC
270 tristate "JEDEC device support" 264 tristate "JEDEC device support"
271 depends on MTD && MTD_OBSOLETE_CHIPS && BROKEN 265 depends on MTD_OBSOLETE_CHIPS && BROKEN
272 help 266 help
273 Enable older JEDEC flash interface devices for self 267 Enable older JEDEC flash interface devices for self
274 programming flash. It is commonly used in older AMD chips. It is 268 programming flash. It is commonly used in older AMD chips. It is
diff --git a/drivers/mtd/chips/cfi_cmdset_0001.c b/drivers/mtd/chips/cfi_cmdset_0001.c
index f334959a335b..2f19fa78d24a 100644
--- a/drivers/mtd/chips/cfi_cmdset_0001.c
+++ b/drivers/mtd/chips/cfi_cmdset_0001.c
@@ -15,6 +15,8 @@
15 * - optimized write buffer method 15 * - optimized write buffer method
16 * 02/05/2002 Christopher Hoover <ch@hpl.hp.com>/<ch@murgatroid.com> 16 * 02/05/2002 Christopher Hoover <ch@hpl.hp.com>/<ch@murgatroid.com>
17 * - reworked lock/unlock/erase support for var size flash 17 * - reworked lock/unlock/erase support for var size flash
18 * 21/03/2007 Rodolfo Giometti <giometti@linux.it>
19 * - auto unlock sectors on resume for auto locking flash on power up
18 */ 20 */
19 21
20#include <linux/module.h> 22#include <linux/module.h>
@@ -30,6 +32,7 @@
30#include <linux/delay.h> 32#include <linux/delay.h>
31#include <linux/interrupt.h> 33#include <linux/interrupt.h>
32#include <linux/reboot.h> 34#include <linux/reboot.h>
35#include <linux/bitmap.h>
33#include <linux/mtd/xip.h> 36#include <linux/mtd/xip.h>
34#include <linux/mtd/map.h> 37#include <linux/mtd/map.h>
35#include <linux/mtd/mtd.h> 38#include <linux/mtd/mtd.h>
@@ -220,6 +223,15 @@ static void fixup_use_write_buffers(struct mtd_info *mtd, void *param)
220 } 223 }
221} 224}
222 225
226/*
227 * Some chips power-up with all sectors locked by default.
228 */
229static void fixup_use_powerup_lock(struct mtd_info *mtd, void *param)
230{
231 printk(KERN_INFO "Using auto-unlock on power-up/resume\n" );
232 mtd->flags |= MTD_STUPID_LOCK;
233}
234
223static struct cfi_fixup cfi_fixup_table[] = { 235static struct cfi_fixup cfi_fixup_table[] = {
224#ifdef CMDSET0001_DISABLE_ERASE_SUSPEND_ON_WRITE 236#ifdef CMDSET0001_DISABLE_ERASE_SUSPEND_ON_WRITE
225 { CFI_MFR_ANY, CFI_ID_ANY, fixup_intel_strataflash, NULL }, 237 { CFI_MFR_ANY, CFI_ID_ANY, fixup_intel_strataflash, NULL },
@@ -232,6 +244,7 @@ static struct cfi_fixup cfi_fixup_table[] = {
232#endif 244#endif
233 { CFI_MFR_ST, 0x00ba, /* M28W320CT */ fixup_st_m28w320ct, NULL }, 245 { CFI_MFR_ST, 0x00ba, /* M28W320CT */ fixup_st_m28w320ct, NULL },
234 { CFI_MFR_ST, 0x00bb, /* M28W320CB */ fixup_st_m28w320cb, NULL }, 246 { CFI_MFR_ST, 0x00bb, /* M28W320CB */ fixup_st_m28w320cb, NULL },
247 { MANUFACTURER_INTEL, 0x891c, fixup_use_powerup_lock, NULL, },
235 { 0, 0, NULL, NULL } 248 { 0, 0, NULL, NULL }
236}; 249};
237 250
@@ -460,6 +473,7 @@ static struct mtd_info *cfi_intelext_setup(struct mtd_info *mtd)
460 mtd->eraseregions[(j*cfi->cfiq->NumEraseRegions)+i].offset = (j*devsize)+offset; 473 mtd->eraseregions[(j*cfi->cfiq->NumEraseRegions)+i].offset = (j*devsize)+offset;
461 mtd->eraseregions[(j*cfi->cfiq->NumEraseRegions)+i].erasesize = ersize; 474 mtd->eraseregions[(j*cfi->cfiq->NumEraseRegions)+i].erasesize = ersize;
462 mtd->eraseregions[(j*cfi->cfiq->NumEraseRegions)+i].numblocks = ernum; 475 mtd->eraseregions[(j*cfi->cfiq->NumEraseRegions)+i].numblocks = ernum;
476 mtd->eraseregions[(j*cfi->cfiq->NumEraseRegions)+i].lockmap = kmalloc(ernum / 8 + 1, GFP_KERNEL);
463 } 477 }
464 offset += (ersize * ernum); 478 offset += (ersize * ernum);
465 } 479 }
@@ -1825,8 +1839,7 @@ static void cfi_intelext_sync (struct mtd_info *mtd)
1825 } 1839 }
1826} 1840}
1827 1841
1828#ifdef DEBUG_LOCK_BITS 1842static int __xipram do_getlockstatus_oneblock(struct map_info *map,
1829static int __xipram do_printlockstatus_oneblock(struct map_info *map,
1830 struct flchip *chip, 1843 struct flchip *chip,
1831 unsigned long adr, 1844 unsigned long adr,
1832 int len, void *thunk) 1845 int len, void *thunk)
@@ -1840,8 +1853,17 @@ static int __xipram do_printlockstatus_oneblock(struct map_info *map,
1840 chip->state = FL_JEDEC_QUERY; 1853 chip->state = FL_JEDEC_QUERY;
1841 status = cfi_read_query(map, adr+(2*ofs_factor)); 1854 status = cfi_read_query(map, adr+(2*ofs_factor));
1842 xip_enable(map, chip, 0); 1855 xip_enable(map, chip, 0);
1856 return status;
1857}
1858
1859#ifdef DEBUG_LOCK_BITS
1860static int __xipram do_printlockstatus_oneblock(struct map_info *map,
1861 struct flchip *chip,
1862 unsigned long adr,
1863 int len, void *thunk)
1864{
1843 printk(KERN_DEBUG "block status register for 0x%08lx is %x\n", 1865 printk(KERN_DEBUG "block status register for 0x%08lx is %x\n",
1844 adr, status); 1866 adr, do_getlockstatus_oneblock(map, chip, adr, len, thunk));
1845 return 0; 1867 return 0;
1846} 1868}
1847#endif 1869#endif
@@ -2216,14 +2238,45 @@ static int cfi_intelext_get_user_prot_info(struct mtd_info *mtd,
2216 2238
2217#endif 2239#endif
2218 2240
2241static void cfi_intelext_save_locks(struct mtd_info *mtd)
2242{
2243 struct mtd_erase_region_info *region;
2244 int block, status, i;
2245 unsigned long adr;
2246 size_t len;
2247
2248 for (i = 0; i < mtd->numeraseregions; i++) {
2249 region = &mtd->eraseregions[i];
2250 if (!region->lockmap)
2251 continue;
2252
2253 for (block = 0; block < region->numblocks; block++){
2254 len = region->erasesize;
2255 adr = region->offset + block * len;
2256
2257 status = cfi_varsize_frob(mtd,
2258 do_getlockstatus_oneblock, adr, len, 0);
2259 if (status)
2260 set_bit(block, region->lockmap);
2261 else
2262 clear_bit(block, region->lockmap);
2263 }
2264 }
2265}
2266
2219static int cfi_intelext_suspend(struct mtd_info *mtd) 2267static int cfi_intelext_suspend(struct mtd_info *mtd)
2220{ 2268{
2221 struct map_info *map = mtd->priv; 2269 struct map_info *map = mtd->priv;
2222 struct cfi_private *cfi = map->fldrv_priv; 2270 struct cfi_private *cfi = map->fldrv_priv;
2271 struct cfi_pri_intelext *extp = cfi->cmdset_priv;
2223 int i; 2272 int i;
2224 struct flchip *chip; 2273 struct flchip *chip;
2225 int ret = 0; 2274 int ret = 0;
2226 2275
2276 if ((mtd->flags & MTD_STUPID_LOCK)
2277 && extp && (extp->FeatureSupport & (1 << 5)))
2278 cfi_intelext_save_locks(mtd);
2279
2227 for (i=0; !ret && i<cfi->numchips; i++) { 2280 for (i=0; !ret && i<cfi->numchips; i++) {
2228 chip = &cfi->chips[i]; 2281 chip = &cfi->chips[i];
2229 2282
@@ -2285,10 +2338,33 @@ static int cfi_intelext_suspend(struct mtd_info *mtd)
2285 return ret; 2338 return ret;
2286} 2339}
2287 2340
2341static void cfi_intelext_restore_locks(struct mtd_info *mtd)
2342{
2343 struct mtd_erase_region_info *region;
2344 int block, i;
2345 unsigned long adr;
2346 size_t len;
2347
2348 for (i = 0; i < mtd->numeraseregions; i++) {
2349 region = &mtd->eraseregions[i];
2350 if (!region->lockmap)
2351 continue;
2352
2353 for (block = 0; block < region->numblocks; block++) {
2354 len = region->erasesize;
2355 adr = region->offset + block * len;
2356
2357 if (!test_bit(block, region->lockmap))
2358 cfi_intelext_unlock(mtd, adr, len);
2359 }
2360 }
2361}
2362
2288static void cfi_intelext_resume(struct mtd_info *mtd) 2363static void cfi_intelext_resume(struct mtd_info *mtd)
2289{ 2364{
2290 struct map_info *map = mtd->priv; 2365 struct map_info *map = mtd->priv;
2291 struct cfi_private *cfi = map->fldrv_priv; 2366 struct cfi_private *cfi = map->fldrv_priv;
2367 struct cfi_pri_intelext *extp = cfi->cmdset_priv;
2292 int i; 2368 int i;
2293 struct flchip *chip; 2369 struct flchip *chip;
2294 2370
@@ -2307,6 +2383,10 @@ static void cfi_intelext_resume(struct mtd_info *mtd)
2307 2383
2308 spin_unlock(chip->mutex); 2384 spin_unlock(chip->mutex);
2309 } 2385 }
2386
2387 if ((mtd->flags & MTD_STUPID_LOCK)
2388 && extp && (extp->FeatureSupport & (1 << 5)))
2389 cfi_intelext_restore_locks(mtd);
2310} 2390}
2311 2391
2312static int cfi_intelext_reset(struct mtd_info *mtd) 2392static int cfi_intelext_reset(struct mtd_info *mtd)
@@ -2347,12 +2427,19 @@ static void cfi_intelext_destroy(struct mtd_info *mtd)
2347{ 2427{
2348 struct map_info *map = mtd->priv; 2428 struct map_info *map = mtd->priv;
2349 struct cfi_private *cfi = map->fldrv_priv; 2429 struct cfi_private *cfi = map->fldrv_priv;
2430 struct mtd_erase_region_info *region;
2431 int i;
2350 cfi_intelext_reset(mtd); 2432 cfi_intelext_reset(mtd);
2351 unregister_reboot_notifier(&mtd->reboot_notifier); 2433 unregister_reboot_notifier(&mtd->reboot_notifier);
2352 kfree(cfi->cmdset_priv); 2434 kfree(cfi->cmdset_priv);
2353 kfree(cfi->cfiq); 2435 kfree(cfi->cfiq);
2354 kfree(cfi->chips[0].priv); 2436 kfree(cfi->chips[0].priv);
2355 kfree(cfi); 2437 kfree(cfi);
2438 for (i = 0; i < mtd->numeraseregions; i++) {
2439 region = &mtd->eraseregions[i];
2440 if (region->lockmap)
2441 kfree(region->lockmap);
2442 }
2356 kfree(mtd->eraseregions); 2443 kfree(mtd->eraseregions);
2357} 2444}
2358 2445
diff --git a/drivers/mtd/chips/fwh_lock.h b/drivers/mtd/chips/fwh_lock.h
index 77303ce5dcf1..ab44f2b996f8 100644
--- a/drivers/mtd/chips/fwh_lock.h
+++ b/drivers/mtd/chips/fwh_lock.h
@@ -65,11 +65,12 @@ static int fwh_xxlock_oneblock(struct map_info *map, struct flchip *chip,
65 return ret; 65 return ret;
66 } 66 }
67 67
68 chip->oldstate = chip->state;
68 chip->state = xxlt->state; 69 chip->state = xxlt->state;
69 map_write(map, CMD(xxlt->val), adr); 70 map_write(map, CMD(xxlt->val), adr);
70 71
71 /* Done and happy. */ 72 /* Done and happy. */
72 chip->state = FL_READY; 73 chip->state = chip->oldstate;
73 put_chip(map, chip, adr); 74 put_chip(map, chip, adr);
74 spin_unlock(chip->mutex); 75 spin_unlock(chip->mutex);
75 return 0; 76 return 0;
diff --git a/drivers/mtd/devices/Kconfig b/drivers/mtd/devices/Kconfig
index 440f6851da69..690c94236d7f 100644
--- a/drivers/mtd/devices/Kconfig
+++ b/drivers/mtd/devices/Kconfig
@@ -6,7 +6,7 @@ menu "Self-contained MTD device drivers"
6 6
7config MTD_PMC551 7config MTD_PMC551
8 tristate "Ramix PMC551 PCI Mezzanine RAM card support" 8 tristate "Ramix PMC551 PCI Mezzanine RAM card support"
9 depends on MTD && PCI 9 depends on PCI
10 ---help--- 10 ---help---
11 This provides a MTD device driver for the Ramix PMC551 RAM PCI card 11 This provides a MTD device driver for the Ramix PMC551 RAM PCI card
12 from Ramix Inc. <http://www.ramix.com/products/memory/pmc551.html>. 12 from Ramix Inc. <http://www.ramix.com/products/memory/pmc551.html>.
@@ -40,7 +40,7 @@ config MTD_PMC551_DEBUG
40 40
41config MTD_MS02NV 41config MTD_MS02NV
42 tristate "DEC MS02-NV NVRAM module support" 42 tristate "DEC MS02-NV NVRAM module support"
43 depends on MTD && MACH_DECSTATION 43 depends on MACH_DECSTATION
44 help 44 help
45 This is an MTD driver for the DEC's MS02-NV (54-20948-01) battery 45 This is an MTD driver for the DEC's MS02-NV (54-20948-01) battery
46 backed-up NVRAM module. The module was originally meant as an NFS 46 backed-up NVRAM module. The module was originally meant as an NFS
@@ -54,15 +54,23 @@ config MTD_MS02NV
54 54
55config MTD_DATAFLASH 55config MTD_DATAFLASH
56 tristate "Support for AT45xxx DataFlash" 56 tristate "Support for AT45xxx DataFlash"
57 depends on MTD && SPI_MASTER && EXPERIMENTAL 57 depends on SPI_MASTER && EXPERIMENTAL
58 help 58 help
59 This enables access to AT45xxx DataFlash chips, using SPI. 59 This enables access to AT45xxx DataFlash chips, using SPI.
60 Sometimes DataFlash chips are packaged inside MMC-format 60 Sometimes DataFlash chips are packaged inside MMC-format
61 cards; at this writing, the MMC stack won't handle those. 61 cards; at this writing, the MMC stack won't handle those.
62 62
63config MTD_DATAFLASH26
64 tristate "AT91RM9200 DataFlash AT26xxx"
65 depends on MTD && ARCH_AT91RM9200 && AT91_SPI
66 help
67 This enables access to the DataFlash chip (AT26xxx) on an
68 AT91RM9200-based board.
69 If you have such a board and such a DataFlash, say 'Y'.
70
63config MTD_M25P80 71config MTD_M25P80
64 tristate "Support for M25 SPI Flash" 72 tristate "Support for M25 SPI Flash"
65 depends on MTD && SPI_MASTER && EXPERIMENTAL 73 depends on SPI_MASTER && EXPERIMENTAL
66 help 74 help
67 This enables access to ST M25P80 and similar SPI flash chips, 75 This enables access to ST M25P80 and similar SPI flash chips,
68 used for program and data storage. Set up your spi devices 76 used for program and data storage. Set up your spi devices
@@ -70,7 +78,6 @@ config MTD_M25P80
70 78
71config MTD_SLRAM 79config MTD_SLRAM
72 tristate "Uncached system RAM" 80 tristate "Uncached system RAM"
73 depends on MTD
74 help 81 help
75 If your CPU cannot cache all of the physical memory in your machine, 82 If your CPU cannot cache all of the physical memory in your machine,
76 you can still use it for storage or swap by using this driver to 83 you can still use it for storage or swap by using this driver to
@@ -78,7 +85,6 @@ config MTD_SLRAM
78 85
79config MTD_PHRAM 86config MTD_PHRAM
80 tristate "Physical system RAM" 87 tristate "Physical system RAM"
81 depends on MTD
82 help 88 help
83 This is a re-implementation of the slram driver above. 89 This is a re-implementation of the slram driver above.
84 90
@@ -88,7 +94,7 @@ config MTD_PHRAM
88 94
89config MTD_LART 95config MTD_LART
90 tristate "28F160xx flash driver for LART" 96 tristate "28F160xx flash driver for LART"
91 depends on SA1100_LART && MTD 97 depends on SA1100_LART
92 help 98 help
93 This enables the flash driver for LART. Please note that you do 99 This enables the flash driver for LART. Please note that you do
94 not need any mapping/chip driver for LART. This one does it all 100 not need any mapping/chip driver for LART. This one does it all
@@ -96,7 +102,6 @@ config MTD_LART
96 102
97config MTD_MTDRAM 103config MTD_MTDRAM
98 tristate "Test driver using RAM" 104 tristate "Test driver using RAM"
99 depends on MTD
100 help 105 help
101 This enables a test MTD device driver which uses vmalloc() to 106 This enables a test MTD device driver which uses vmalloc() to
102 provide storage. You probably want to say 'N' unless you're 107 provide storage. You probably want to say 'N' unless you're
@@ -136,7 +141,7 @@ config MTDRAM_ABS_POS
136 141
137config MTD_BLOCK2MTD 142config MTD_BLOCK2MTD
138 tristate "MTD using block device" 143 tristate "MTD using block device"
139 depends on MTD && BLOCK 144 depends on BLOCK
140 help 145 help
141 This driver allows a block device to appear as an MTD. It would 146 This driver allows a block device to appear as an MTD. It would
142 generally be used in the following cases: 147 generally be used in the following cases:
@@ -150,7 +155,6 @@ comment "Disk-On-Chip Device Drivers"
150 155
151config MTD_DOC2000 156config MTD_DOC2000
152 tristate "M-Systems Disk-On-Chip 2000 and Millennium (DEPRECATED)" 157 tristate "M-Systems Disk-On-Chip 2000 and Millennium (DEPRECATED)"
153 depends on MTD
154 select MTD_DOCPROBE 158 select MTD_DOCPROBE
155 select MTD_NAND_IDS 159 select MTD_NAND_IDS
156 ---help--- 160 ---help---
@@ -173,7 +177,6 @@ config MTD_DOC2000
173 177
174config MTD_DOC2001 178config MTD_DOC2001
175 tristate "M-Systems Disk-On-Chip Millennium-only alternative driver (DEPRECATED)" 179 tristate "M-Systems Disk-On-Chip Millennium-only alternative driver (DEPRECATED)"
176 depends on MTD
177 select MTD_DOCPROBE 180 select MTD_DOCPROBE
178 select MTD_NAND_IDS 181 select MTD_NAND_IDS
179 ---help--- 182 ---help---
@@ -195,7 +198,6 @@ config MTD_DOC2001
195 198
196config MTD_DOC2001PLUS 199config MTD_DOC2001PLUS
197 tristate "M-Systems Disk-On-Chip Millennium Plus" 200 tristate "M-Systems Disk-On-Chip Millennium Plus"
198 depends on MTD
199 select MTD_DOCPROBE 201 select MTD_DOCPROBE
200 select MTD_NAND_IDS 202 select MTD_NAND_IDS
201 ---help--- 203 ---help---
diff --git a/drivers/mtd/devices/Makefile b/drivers/mtd/devices/Makefile
index 0f788d5c4bf8..8ab568b3f533 100644
--- a/drivers/mtd/devices/Makefile
+++ b/drivers/mtd/devices/Makefile
@@ -16,4 +16,5 @@ obj-$(CONFIG_MTD_MTDRAM) += mtdram.o
16obj-$(CONFIG_MTD_LART) += lart.o 16obj-$(CONFIG_MTD_LART) += lart.o
17obj-$(CONFIG_MTD_BLOCK2MTD) += block2mtd.o 17obj-$(CONFIG_MTD_BLOCK2MTD) += block2mtd.o
18obj-$(CONFIG_MTD_DATAFLASH) += mtd_dataflash.o 18obj-$(CONFIG_MTD_DATAFLASH) += mtd_dataflash.o
19obj-$(CONFIG_MTD_DATAFLASH26) += at91_dataflash26.o
19obj-$(CONFIG_MTD_M25P80) += m25p80.o 20obj-$(CONFIG_MTD_M25P80) += m25p80.o
diff --git a/drivers/mtd/devices/at91_dataflash26.c b/drivers/mtd/devices/at91_dataflash26.c
new file mode 100644
index 000000000000..64ce37f986fc
--- /dev/null
+++ b/drivers/mtd/devices/at91_dataflash26.c
@@ -0,0 +1,485 @@
1/*
2 * Atmel DataFlash driver for Atmel AT91RM9200 (Thunder)
3 * This is a largely modified version of at91_dataflash.c that
4 * supports AT26xxx dataflash chips. The original driver supports
5 * AT45xxx chips.
6 *
7 * Note: This driver was only tested with an AT26F004. It should be
8 * easy to make it work with other AT26xxx dataflash devices, though.
9 *
10 * Copyright (C) 2007 Hans J. Koch <hjk@linutronix.de>
11 * original Copyright (C) SAN People (Pty) Ltd
12 *
13 * This program is free software; you can redistribute it and/or
14 * modify it under the terms of the GNU General Public License
15 * version 2 as published by the Free Software Foundation.
16*/
17
18#include <linux/config.h>
19#include <linux/module.h>
20#include <linux/init.h>
21#include <linux/mtd/mtd.h>
22
23#include <asm/arch/at91_spi.h>
24
25#define DATAFLASH_MAX_DEVICES 4 /* max number of dataflash devices */
26
27#define MANUFACTURER_ID_ATMEL 0x1F
28
29/* command codes */
30
31#define AT26_OP_READ_STATUS 0x05
32#define AT26_OP_READ_DEV_ID 0x9F
33#define AT26_OP_ERASE_PAGE_4K 0x20
34#define AT26_OP_READ_ARRAY_FAST 0x0B
35#define AT26_OP_SEQUENTIAL_WRITE 0xAF
36#define AT26_OP_WRITE_ENABLE 0x06
37#define AT26_OP_WRITE_DISABLE 0x04
38#define AT26_OP_SECTOR_PROTECT 0x36
39#define AT26_OP_SECTOR_UNPROTECT 0x39
40
41/* status register bits */
42
43#define AT26_STATUS_BUSY 0x01
44#define AT26_STATUS_WRITE_ENABLE 0x02
45
46struct dataflash_local
47{
48 int spi; /* SPI chip-select number */
49 unsigned int page_size; /* number of bytes per page */
50};
51
52
53/* Detected DataFlash devices */
54static struct mtd_info* mtd_devices[DATAFLASH_MAX_DEVICES];
55static int nr_devices = 0;
56
57/* Allocate a single SPI transfer descriptor. We're assuming that if multiple
58 SPI transfers occur at the same time, spi_access_bus() will serialize them.
59 If this is not valid, then either (i) each dataflash 'priv' structure
60 needs it's own transfer descriptor, (ii) we lock this one, or (iii) use
61 another mechanism. */
62static struct spi_transfer_list* spi_transfer_desc;
63
64/*
65 * Perform a SPI transfer to access the DataFlash device.
66 */
67static int do_spi_transfer(int nr, char* tx, int tx_len, char* rx, int rx_len,
68 char* txnext, int txnext_len, char* rxnext, int rxnext_len)
69{
70 struct spi_transfer_list* list = spi_transfer_desc;
71
72 list->tx[0] = tx; list->txlen[0] = tx_len;
73 list->rx[0] = rx; list->rxlen[0] = rx_len;
74
75 list->tx[1] = txnext; list->txlen[1] = txnext_len;
76 list->rx[1] = rxnext; list->rxlen[1] = rxnext_len;
77
78 list->nr_transfers = nr;
79 /* Note: spi_transfer() always returns 0, there are no error checks */
80 return spi_transfer(list);
81}
82
83/*
84 * Return the status of the DataFlash device.
85 */
86static unsigned char at91_dataflash26_status(void)
87{
88 unsigned char command[2];
89
90 command[0] = AT26_OP_READ_STATUS;
91 command[1] = 0;
92
93 do_spi_transfer(1, command, 2, command, 2, NULL, 0, NULL, 0);
94
95 return command[1];
96}
97
98/*
99 * Poll the DataFlash device until it is READY.
100 */
101static unsigned char at91_dataflash26_waitready(void)
102{
103 unsigned char status;
104
105 while (1) {
106 status = at91_dataflash26_status();
107 if (!(status & AT26_STATUS_BUSY))
108 return status;
109 }
110}
111
112/*
113 * Enable/disable write access
114 */
115 static void at91_dataflash26_write_enable(int enable)
116{
117 unsigned char cmd[2];
118
119 DEBUG(MTD_DEBUG_LEVEL3, "write_enable: enable=%i\n", enable);
120
121 if (enable)
122 cmd[0] = AT26_OP_WRITE_ENABLE;
123 else
124 cmd[0] = AT26_OP_WRITE_DISABLE;
125 cmd[1] = 0;
126
127 do_spi_transfer(1, cmd, 2, cmd, 2, NULL, 0, NULL, 0);
128}
129
130/*
131 * Protect/unprotect sector
132 */
133 static void at91_dataflash26_sector_protect(loff_t addr, int protect)
134{
135 unsigned char cmd[4];
136
137 DEBUG(MTD_DEBUG_LEVEL3, "sector_protect: addr=0x%06x prot=%d\n",
138 addr, protect);
139
140 if (protect)
141 cmd[0] = AT26_OP_SECTOR_PROTECT;
142 else
143 cmd[0] = AT26_OP_SECTOR_UNPROTECT;
144 cmd[1] = (addr & 0x00FF0000) >> 16;
145 cmd[2] = (addr & 0x0000FF00) >> 8;
146 cmd[3] = (addr & 0x000000FF);
147
148 do_spi_transfer(1, cmd, 4, cmd, 4, NULL, 0, NULL, 0);
149}
150
151/*
152 * Erase blocks of flash.
153 */
154static int at91_dataflash26_erase(struct mtd_info *mtd,
155 struct erase_info *instr)
156{
157 struct dataflash_local *priv = (struct dataflash_local *) mtd->priv;
158 unsigned char cmd[4];
159
160 DEBUG(MTD_DEBUG_LEVEL1, "dataflash_erase: addr=0x%06x len=%i\n",
161 instr->addr, instr->len);
162
163 /* Sanity checks */
164 if (priv->page_size != 4096)
165 return -EINVAL; /* Can't handle other sizes at the moment */
166
167 if ( ((instr->len % mtd->erasesize) != 0)
168 || ((instr->len % priv->page_size) != 0)
169 || ((instr->addr % priv->page_size) != 0)
170 || ((instr->addr + instr->len) > mtd->size))
171 return -EINVAL;
172
173 spi_access_bus(priv->spi);
174
175 while (instr->len > 0) {
176 at91_dataflash26_write_enable(1);
177 at91_dataflash26_sector_protect(instr->addr, 0);
178 at91_dataflash26_write_enable(1);
179 cmd[0] = AT26_OP_ERASE_PAGE_4K;
180 cmd[1] = (instr->addr & 0x00FF0000) >> 16;
181 cmd[2] = (instr->addr & 0x0000FF00) >> 8;
182 cmd[3] = (instr->addr & 0x000000FF);
183
184 DEBUG(MTD_DEBUG_LEVEL3, "ERASE: (0x%02x) 0x%02x 0x%02x"
185 "0x%02x\n",
186 cmd[0], cmd[1], cmd[2], cmd[3]);
187
188 do_spi_transfer(1, cmd, 4, cmd, 4, NULL, 0, NULL, 0);
189 at91_dataflash26_waitready();
190
191 instr->addr += priv->page_size; /* next page */
192 instr->len -= priv->page_size;
193 }
194
195 at91_dataflash26_write_enable(0);
196 spi_release_bus(priv->spi);
197
198 /* Inform MTD subsystem that erase is complete */
199 instr->state = MTD_ERASE_DONE;
200 if (instr->callback)
201 instr->callback(instr);
202
203 return 0;
204}
205
206/*
207 * Read from the DataFlash device.
208 * from : Start offset in flash device
209 * len : Number of bytes to read
210 * retlen : Number of bytes actually read
211 * buf : Buffer that will receive data
212 */
213static int at91_dataflash26_read(struct mtd_info *mtd, loff_t from, size_t len,
214 size_t *retlen, u_char *buf)
215{
216 struct dataflash_local *priv = (struct dataflash_local *) mtd->priv;
217 unsigned char cmd[5];
218
219 DEBUG(MTD_DEBUG_LEVEL1, "dataflash_read: %lli .. %lli\n",
220 from, from+len);
221
222 *retlen = 0;
223
224 /* Sanity checks */
225 if (!len)
226 return 0;
227 if (from + len > mtd->size)
228 return -EINVAL;
229
230 cmd[0] = AT26_OP_READ_ARRAY_FAST;
231 cmd[1] = (from & 0x00FF0000) >> 16;
232 cmd[2] = (from & 0x0000FF00) >> 8;
233 cmd[3] = (from & 0x000000FF);
234 /* cmd[4] is a "Don't care" byte */
235
236 DEBUG(MTD_DEBUG_LEVEL3, "READ: (0x%02x) 0x%02x 0x%02x 0x%02x\n",
237 cmd[0], cmd[1], cmd[2], cmd[3]);
238
239 spi_access_bus(priv->spi);
240 do_spi_transfer(2, cmd, 5, cmd, 5, buf, len, buf, len);
241 spi_release_bus(priv->spi);
242
243 *retlen = len;
244 return 0;
245}
246
247/*
248 * Write to the DataFlash device.
249 * to : Start offset in flash device
250 * len : Number of bytes to write
251 * retlen : Number of bytes actually written
252 * buf : Buffer containing the data
253 */
254static int at91_dataflash26_write(struct mtd_info *mtd, loff_t to, size_t len,
255 size_t *retlen, const u_char *buf)
256{
257 struct dataflash_local *priv = (struct dataflash_local *) mtd->priv;
258 unsigned int addr, buf_index = 0;
259 int ret = -EIO, sector, last_sector;
260 unsigned char status, cmd[5];
261
262 DEBUG(MTD_DEBUG_LEVEL1, "dataflash_write: %lli .. %lli\n", to, to+len);
263
264 *retlen = 0;
265
266 /* Sanity checks */
267 if (!len)
268 return 0;
269 if (to + len > mtd->size)
270 return -EINVAL;
271
272 spi_access_bus(priv->spi);
273
274 addr = to;
275 last_sector = -1;
276
277 while (buf_index < len) {
278 sector = addr / priv->page_size;
279 /* Write first byte if a new sector begins */
280 if (sector != last_sector) {
281 at91_dataflash26_write_enable(1);
282 at91_dataflash26_sector_protect(addr, 0);
283 at91_dataflash26_write_enable(1);
284
285 /* Program first byte of a new sector */
286 cmd[0] = AT26_OP_SEQUENTIAL_WRITE;
287 cmd[1] = (addr & 0x00FF0000) >> 16;
288 cmd[2] = (addr & 0x0000FF00) >> 8;
289 cmd[3] = (addr & 0x000000FF);
290 cmd[4] = buf[buf_index++];
291 do_spi_transfer(1, cmd, 5, cmd, 5, NULL, 0, NULL, 0);
292 status = at91_dataflash26_waitready();
293 addr++;
294 /* On write errors, the chip resets the write enable
295 flag. This also happens after the last byte of a
296 sector is successfully programmed. */
297 if ( ( !(status & AT26_STATUS_WRITE_ENABLE))
298 && ((addr % priv->page_size) != 0) ) {
299 DEBUG(MTD_DEBUG_LEVEL1,
300 "write error1: addr=0x%06x, "
301 "status=0x%02x\n", addr, status);
302 goto write_err;
303 }
304 (*retlen)++;
305 last_sector = sector;
306 }
307
308 /* Write subsequent bytes in the same sector */
309 cmd[0] = AT26_OP_SEQUENTIAL_WRITE;
310 cmd[1] = buf[buf_index++];
311 do_spi_transfer(1, cmd, 2, cmd, 2, NULL, 0, NULL, 0);
312 status = at91_dataflash26_waitready();
313 addr++;
314
315 if ( ( !(status & AT26_STATUS_WRITE_ENABLE))
316 && ((addr % priv->page_size) != 0) ) {
317 DEBUG(MTD_DEBUG_LEVEL1, "write error2: addr=0x%06x, "
318 "status=0x%02x\n", addr, status);
319 goto write_err;
320 }
321
322 (*retlen)++;
323 }
324
325 ret = 0;
326 at91_dataflash26_write_enable(0);
327write_err:
328 spi_release_bus(priv->spi);
329 return ret;
330}
331
332/*
333 * Initialize and register DataFlash device with MTD subsystem.
334 */
335static int __init add_dataflash(int channel, char *name, int nr_pages,
336 int pagesize)
337{
338 struct mtd_info *device;
339 struct dataflash_local *priv;
340
341 if (nr_devices >= DATAFLASH_MAX_DEVICES) {
342 printk(KERN_ERR "at91_dataflash26: Too many devices "
343 "detected\n");
344 return 0;
345 }
346
347 device = kzalloc(sizeof(struct mtd_info) + strlen(name) + 8,
348 GFP_KERNEL);
349 if (!device)
350 return -ENOMEM;
351
352 device->name = (char *)&device[1];
353 sprintf(device->name, "%s.spi%d", name, channel);
354 device->size = nr_pages * pagesize;
355 device->erasesize = pagesize;
356 device->owner = THIS_MODULE;
357 device->type = MTD_DATAFLASH;
358 device->flags = MTD_CAP_NORFLASH;
359 device->erase = at91_dataflash26_erase;
360 device->read = at91_dataflash26_read;
361 device->write = at91_dataflash26_write;
362
363 priv = (struct dataflash_local *)kzalloc(sizeof(struct dataflash_local),
364 GFP_KERNEL);
365 if (!priv) {
366 kfree(device);
367 return -ENOMEM;
368 }
369
370 priv->spi = channel;
371 priv->page_size = pagesize;
372 device->priv = priv;
373
374 mtd_devices[nr_devices] = device;
375 nr_devices++;
376 printk(KERN_INFO "at91_dataflash26: %s detected [spi%i] (%i bytes)\n",
377 name, channel, device->size);
378
379 return add_mtd_device(device);
380}
381
382/*
383 * Detect and initialize DataFlash device connected to specified SPI channel.
384 *
385 */
386
387struct dataflash26_types {
388 unsigned char id0;
389 unsigned char id1;
390 char *name;
391 int pagesize;
392 int nr_pages;
393};
394
395struct dataflash26_types df26_types[] = {
396 {
397 .id0 = 0x04,
398 .id1 = 0x00,
399 .name = "AT26F004",
400 .pagesize = 4096,
401 .nr_pages = 128,
402 },
403 {
404 .id0 = 0x45,
405 .id1 = 0x01,
406 .name = "AT26DF081A", /* Not tested ! */
407 .pagesize = 4096,
408 .nr_pages = 256,
409 },
410};
411
412static int __init at91_dataflash26_detect(int channel)
413{
414 unsigned char status, cmd[5];
415 int i;
416
417 spi_access_bus(channel);
418 status = at91_dataflash26_status();
419
420 if (status == 0 || status == 0xff) {
421 printk(KERN_ERR "at91_dataflash26_detect: status error %d\n",
422 status);
423 spi_release_bus(channel);
424 return -ENODEV;
425 }
426
427 cmd[0] = AT26_OP_READ_DEV_ID;
428 do_spi_transfer(1, cmd, 5, cmd, 5, NULL, 0, NULL, 0);
429 spi_release_bus(channel);
430
431 if (cmd[1] != MANUFACTURER_ID_ATMEL)
432 return -ENODEV;
433
434 for (i = 0; i < ARRAY_SIZE(df26_types); i++) {
435 if ( cmd[2] == df26_types[i].id0
436 && cmd[3] == df26_types[i].id1)
437 return add_dataflash(channel,
438 df26_types[i].name,
439 df26_types[i].nr_pages,
440 df26_types[i].pagesize);
441 }
442
443 printk(KERN_ERR "at91_dataflash26_detect: Unsupported device "
444 "(0x%02x/0x%02x)\n", cmd[2], cmd[3]);
445 return -ENODEV;
446}
447
448static int __init at91_dataflash26_init(void)
449{
450 spi_transfer_desc = kmalloc(sizeof(struct spi_transfer_list),
451 GFP_KERNEL);
452 if (!spi_transfer_desc)
453 return -ENOMEM;
454
455 /* DataFlash (SPI chip select 0) */
456 at91_dataflash26_detect(0);
457
458#ifdef CONFIG_MTD_AT91_DATAFLASH_CARD
459 /* DataFlash card (SPI chip select 3) */
460 at91_dataflash26_detect(3);
461#endif
462 return 0;
463}
464
465static void __exit at91_dataflash26_exit(void)
466{
467 int i;
468
469 for (i = 0; i < DATAFLASH_MAX_DEVICES; i++) {
470 if (mtd_devices[i]) {
471 del_mtd_device(mtd_devices[i]);
472 kfree(mtd_devices[i]->priv);
473 kfree(mtd_devices[i]);
474 }
475 }
476 nr_devices = 0;
477 kfree(spi_transfer_desc);
478}
479
480module_init(at91_dataflash26_init);
481module_exit(at91_dataflash26_exit);
482
483MODULE_LICENSE("GPL");
484MODULE_AUTHOR("Hans J. Koch");
485MODULE_DESCRIPTION("DataFlash AT26xxx driver for Atmel AT91RM9200");
diff --git a/drivers/mtd/devices/block2mtd.c b/drivers/mtd/devices/block2mtd.c
index f9f2ce7806b0..ce47544dc120 100644
--- a/drivers/mtd/devices/block2mtd.c
+++ b/drivers/mtd/devices/block2mtd.c
@@ -40,56 +40,9 @@ struct block2mtd_dev {
40static LIST_HEAD(blkmtd_device_list); 40static LIST_HEAD(blkmtd_device_list);
41 41
42 42
43#define PAGE_READAHEAD 64 43static struct page* page_read(struct address_space *mapping, int index)
44static void cache_readahead(struct address_space *mapping, int index)
45{ 44{
46 filler_t *filler = (filler_t*)mapping->a_ops->readpage; 45 filler_t *filler = (filler_t*)mapping->a_ops->readpage;
47 int i, pagei;
48 unsigned ret = 0;
49 unsigned long end_index;
50 struct page *page;
51 LIST_HEAD(page_pool);
52 struct inode *inode = mapping->host;
53 loff_t isize = i_size_read(inode);
54
55 if (!isize) {
56 INFO("iSize=0 in cache_readahead\n");
57 return;
58 }
59
60 end_index = ((isize - 1) >> PAGE_CACHE_SHIFT);
61
62 read_lock_irq(&mapping->tree_lock);
63 for (i = 0; i < PAGE_READAHEAD; i++) {
64 pagei = index + i;
65 if (pagei > end_index) {
66 INFO("Overrun end of disk in cache readahead\n");
67 break;
68 }
69 page = radix_tree_lookup(&mapping->page_tree, pagei);
70 if (page && (!i))
71 break;
72 if (page)
73 continue;
74 read_unlock_irq(&mapping->tree_lock);
75 page = page_cache_alloc_cold(mapping);
76 read_lock_irq(&mapping->tree_lock);
77 if (!page)
78 break;
79 page->index = pagei;
80 list_add(&page->lru, &page_pool);
81 ret++;
82 }
83 read_unlock_irq(&mapping->tree_lock);
84 if (ret)
85 read_cache_pages(mapping, &page_pool, filler, NULL);
86}
87
88
89static struct page* page_readahead(struct address_space *mapping, int index)
90{
91 filler_t *filler = (filler_t*)mapping->a_ops->readpage;
92 cache_readahead(mapping, index);
93 return read_cache_page(mapping, index, filler, NULL); 46 return read_cache_page(mapping, index, filler, NULL);
94} 47}
95 48
@@ -105,14 +58,14 @@ static int _block2mtd_erase(struct block2mtd_dev *dev, loff_t to, size_t len)
105 u_long *max; 58 u_long *max;
106 59
107 while (pages) { 60 while (pages) {
108 page = page_readahead(mapping, index); 61 page = page_read(mapping, index);
109 if (!page) 62 if (!page)
110 return -ENOMEM; 63 return -ENOMEM;
111 if (IS_ERR(page)) 64 if (IS_ERR(page))
112 return PTR_ERR(page); 65 return PTR_ERR(page);
113 66
114 max = (u_long*)page_address(page) + PAGE_SIZE; 67 max = page_address(page) + PAGE_SIZE;
115 for (p=(u_long*)page_address(page); p<max; p++) 68 for (p=page_address(page); p<max; p++)
116 if (*p != -1UL) { 69 if (*p != -1UL) {
117 lock_page(page); 70 lock_page(page);
118 memset(page_address(page), 0xff, PAGE_SIZE); 71 memset(page_address(page), 0xff, PAGE_SIZE);
@@ -174,8 +127,7 @@ static int block2mtd_read(struct mtd_info *mtd, loff_t from, size_t len,
174 cpylen = len; // this page 127 cpylen = len; // this page
175 len = len - cpylen; 128 len = len - cpylen;
176 129
177 // Get page 130 page = page_read(dev->blkdev->bd_inode->i_mapping, index);
178 page = page_readahead(dev->blkdev->bd_inode->i_mapping, index);
179 if (!page) 131 if (!page)
180 return -ENOMEM; 132 return -ENOMEM;
181 if (IS_ERR(page)) 133 if (IS_ERR(page))
@@ -213,8 +165,7 @@ static int _block2mtd_write(struct block2mtd_dev *dev, const u_char *buf,
213 cpylen = len; // this page 165 cpylen = len; // this page
214 len = len - cpylen; 166 len = len - cpylen;
215 167
216 // Get page 168 page = page_read(mapping, index);
217 page = page_readahead(mapping, index);
218 if (!page) 169 if (!page)
219 return -ENOMEM; 170 return -ENOMEM;
220 if (IS_ERR(page)) 171 if (IS_ERR(page))
@@ -308,9 +259,9 @@ static struct block2mtd_dev *add_device(char *devname, int erase_size)
308 /* We might not have rootfs mounted at this point. Try 259 /* We might not have rootfs mounted at this point. Try
309 to resolve the device name by other means. */ 260 to resolve the device name by other means. */
310 261
311 dev_t dev = name_to_dev_t(devname); 262 dev_t devt = name_to_dev_t(devname);
312 if (dev != 0) { 263 if (devt) {
313 bdev = open_by_devnum(dev, FMODE_WRITE | FMODE_READ); 264 bdev = open_by_devnum(devt, FMODE_WRITE | FMODE_READ);
314 } 265 }
315 } 266 }
316#endif 267#endif
diff --git a/drivers/mtd/maps/Kconfig b/drivers/mtd/maps/Kconfig
index bbf0553bdb2e..d990d8141ef5 100644
--- a/drivers/mtd/maps/Kconfig
+++ b/drivers/mtd/maps/Kconfig
@@ -6,7 +6,6 @@ menu "Mapping drivers for chip access"
6 6
7config MTD_COMPLEX_MAPPINGS 7config MTD_COMPLEX_MAPPINGS
8 bool "Support non-linear mappings of flash chips" 8 bool "Support non-linear mappings of flash chips"
9 depends on MTD
10 help 9 help
11 This causes the chip drivers to allow for complicated 10 This causes the chip drivers to allow for complicated
12 paged mappings of flash chips. 11 paged mappings of flash chips.
@@ -69,6 +68,39 @@ config MTD_PHYSMAP_OF
69 physically into the CPU's memory. The mapping description here is 68 physically into the CPU's memory. The mapping description here is
70 taken from OF device tree. 69 taken from OF device tree.
71 70
71config MTD_PMC_MSP_EVM
72 tristate "CFI Flash device mapped on PMC-Sierra MSP"
73 depends on PMC_MSP && MTD_CFI
74 select MTD_PARTITIONS
75 help
76 This provides a 'mapping' driver which support the way
77 in which user-programmable flash chips are connected on the
78 PMC-Sierra MSP eval/demo boards
79
80choice
81 prompt "Maximum mappable memory avialable for flash IO"
82 depends on MTD_PMC_MSP_EVM
83 default MSP_FLASH_MAP_LIMIT_32M
84
85config MSP_FLASH_MAP_LIMIT_32M
86 bool "32M"
87
88endchoice
89
90config MSP_FLASH_MAP_LIMIT
91 hex
92 default "0x02000000"
93 depends on MSP_FLASH_MAP_LIMIT_32M
94
95config MTD_PMC_MSP_RAMROOT
96 tristate "Embedded RAM block device for root on PMC-Sierra MSP"
97 depends on PMC_MSP_EMBEDDED_ROOTFS && \
98 (MTD_BLOCK || MTD_BLOCK_RO) && \
99 MTD_RAM
100 help
101 This provides support for the embedded root file system
102 on PMC MSP devices. This memory is mapped as a MTD block device.
103
72config MTD_SUN_UFLASH 104config MTD_SUN_UFLASH
73 tristate "Sun Microsystems userflash support" 105 tristate "Sun Microsystems userflash support"
74 depends on SPARC && MTD_CFI 106 depends on SPARC && MTD_CFI
@@ -240,13 +272,13 @@ config MTD_NETtel
240 272
241config MTD_ALCHEMY 273config MTD_ALCHEMY
242 tristate "AMD Alchemy Pb1xxx/Db1xxx/RDK MTD support" 274 tristate "AMD Alchemy Pb1xxx/Db1xxx/RDK MTD support"
243 depends on SOC_AU1X00 275 depends on SOC_AU1X00 && MTD_PARTITIONS && MTD_CFI
244 help 276 help
245 Flash memory access on AMD Alchemy Pb/Db/RDK Reference Boards 277 Flash memory access on AMD Alchemy Pb/Db/RDK Reference Boards
246 278
247config MTD_MTX1 279config MTD_MTX1
248 tristate "4G Systems MTX-1 Flash device" 280 tristate "4G Systems MTX-1 Flash device"
249 depends on MIPS && MIPS_MTX1 281 depends on MIPS_MTX1 && MTD_CFI
250 help 282 help
251 Flash memory access on 4G Systems MTX-1 Board. If you have one of 283 Flash memory access on 4G Systems MTX-1 Board. If you have one of
252 these boards and would like to use the flash chips on it, say 'Y'. 284 these boards and would like to use the flash chips on it, say 'Y'.
@@ -384,7 +416,7 @@ config MTD_TQM834x
384 416
385config MTD_OCELOT 417config MTD_OCELOT
386 tristate "Momenco Ocelot boot flash device" 418 tristate "Momenco Ocelot boot flash device"
387 depends on MIPS && MOMENCO_OCELOT 419 depends on MOMENCO_OCELOT
388 help 420 help
389 This enables access routines for the boot flash device and for the 421 This enables access routines for the boot flash device and for the
390 NVRAM on the Momenco Ocelot board. If you have one of these boards 422 NVRAM on the Momenco Ocelot board. If you have one of these boards
@@ -517,7 +549,7 @@ config MTD_OMAP_NOR
517# This needs CFI or JEDEC, depending on the cards found. 549# This needs CFI or JEDEC, depending on the cards found.
518config MTD_PCI 550config MTD_PCI
519 tristate "PCI MTD driver" 551 tristate "PCI MTD driver"
520 depends on MTD && PCI && MTD_COMPLEX_MAPPINGS 552 depends on PCI && MTD_COMPLEX_MAPPINGS
521 help 553 help
522 Mapping for accessing flash devices on add-in cards like the Intel XScale 554 Mapping for accessing flash devices on add-in cards like the Intel XScale
523 IQ80310 card, and the Intel EBSA285 card in blank ROM programming mode 555 IQ80310 card, and the Intel EBSA285 card in blank ROM programming mode
@@ -527,7 +559,7 @@ config MTD_PCI
527 559
528config MTD_PCMCIA 560config MTD_PCMCIA
529 tristate "PCMCIA MTD driver" 561 tristate "PCMCIA MTD driver"
530 depends on MTD && PCMCIA && MTD_COMPLEX_MAPPINGS && BROKEN 562 depends on PCMCIA && MTD_COMPLEX_MAPPINGS && BROKEN
531 help 563 help
532 Map driver for accessing PCMCIA linear flash memory cards. These 564 Map driver for accessing PCMCIA linear flash memory cards. These
533 cards are usually around 4-16MiB in size. This does not include 565 cards are usually around 4-16MiB in size. This does not include
@@ -591,13 +623,12 @@ config MTD_BAST_MAXSIZE
591 623
592config MTD_SHARP_SL 624config MTD_SHARP_SL
593 bool "ROM mapped on Sharp SL Series" 625 bool "ROM mapped on Sharp SL Series"
594 depends on MTD && ARCH_PXA 626 depends on ARCH_PXA
595 help 627 help
596 This enables access to the flash chip on the Sharp SL Series of PDAs. 628 This enables access to the flash chip on the Sharp SL Series of PDAs.
597 629
598config MTD_PLATRAM 630config MTD_PLATRAM
599 tristate "Map driver for platform device RAM (mtd-ram)" 631 tristate "Map driver for platform device RAM (mtd-ram)"
600 depends on MTD
601 select MTD_RAM 632 select MTD_RAM
602 help 633 help
603 Map driver for RAM areas described via the platform device 634 Map driver for RAM areas described via the platform device
diff --git a/drivers/mtd/maps/Makefile b/drivers/mtd/maps/Makefile
index 071d0bf922b6..de036c5e6139 100644
--- a/drivers/mtd/maps/Makefile
+++ b/drivers/mtd/maps/Makefile
@@ -27,6 +27,8 @@ obj-$(CONFIG_MTD_CEIVA) += ceiva.o
27obj-$(CONFIG_MTD_OCTAGON) += octagon-5066.o 27obj-$(CONFIG_MTD_OCTAGON) += octagon-5066.o
28obj-$(CONFIG_MTD_PHYSMAP) += physmap.o 28obj-$(CONFIG_MTD_PHYSMAP) += physmap.o
29obj-$(CONFIG_MTD_PHYSMAP_OF) += physmap_of.o 29obj-$(CONFIG_MTD_PHYSMAP_OF) += physmap_of.o
30obj-$(CONFIG_MTD_PMC_MSP_EVM) += pmcmsp-flash.o
31obj-$(CONFIG_MTD_PMC_MSP_RAMROOT)+= pmcmsp-ramroot.o
30obj-$(CONFIG_MTD_PNC2000) += pnc2000.o 32obj-$(CONFIG_MTD_PNC2000) += pnc2000.o
31obj-$(CONFIG_MTD_PCMCIA) += pcmciamtd.o 33obj-$(CONFIG_MTD_PCMCIA) += pcmciamtd.o
32obj-$(CONFIG_MTD_RPXLITE) += rpxlite.o 34obj-$(CONFIG_MTD_RPXLITE) += rpxlite.o
diff --git a/drivers/mtd/maps/alchemy-flash.c b/drivers/mtd/maps/alchemy-flash.c
index 7fc8097e41d2..84fbe0e8c47e 100644
--- a/drivers/mtd/maps/alchemy-flash.c
+++ b/drivers/mtd/maps/alchemy-flash.c
@@ -1,10 +1,7 @@
1/* 1/*
2 * Flash memory access on AMD Alchemy evaluation boards 2 * Flash memory access on AMD Alchemy evaluation boards
3 * 3 *
4 * $Id: alchemy-flash.c,v 1.2 2005/11/07 11:14:26 gleixner Exp $
5 *
6 * (C) 2003, 2004 Pete Popov <ppopov@embeddedalley.com> 4 * (C) 2003, 2004 Pete Popov <ppopov@embeddedalley.com>
7 *
8 */ 5 */
9 6
10#include <linux/init.h> 7#include <linux/init.h>
@@ -18,12 +15,6 @@
18 15
19#include <asm/io.h> 16#include <asm/io.h>
20 17
21#ifdef DEBUG_RW
22#define DBG(x...) printk(x)
23#else
24#define DBG(x...)
25#endif
26
27#ifdef CONFIG_MIPS_PB1000 18#ifdef CONFIG_MIPS_PB1000
28#define BOARD_MAP_NAME "Pb1000 Flash" 19#define BOARD_MAP_NAME "Pb1000 Flash"
29#define BOARD_FLASH_SIZE 0x00800000 /* 8MB */ 20#define BOARD_FLASH_SIZE 0x00800000 /* 8MB */
diff --git a/drivers/mtd/maps/plat-ram.c b/drivers/mtd/maps/plat-ram.c
index 2b6504ecbbd1..894c0b271289 100644
--- a/drivers/mtd/maps/plat-ram.c
+++ b/drivers/mtd/maps/plat-ram.c
@@ -169,7 +169,8 @@ static int platram_probe(struct platform_device *pdev)
169 goto exit_free; 169 goto exit_free;
170 } 170 }
171 171
172 dev_dbg(&pdev->dev, "got platform resource %p (0x%lx)\n", res, res->start); 172 dev_dbg(&pdev->dev, "got platform resource %p (0x%llx)\n", res,
173 (unsigned long long)res->start);
173 174
174 /* setup map parameters */ 175 /* setup map parameters */
175 176
diff --git a/drivers/mtd/maps/pmcmsp-flash.c b/drivers/mtd/maps/pmcmsp-flash.c
new file mode 100644
index 000000000000..7e0377ec1c40
--- /dev/null
+++ b/drivers/mtd/maps/pmcmsp-flash.c
@@ -0,0 +1,184 @@
1/*
2 * Mapping of a custom board with both AMD CFI and JEDEC flash in partitions.
3 * Config with both CFI and JEDEC device support.
4 *
5 * Basically physmap.c with the addition of partitions and
6 * an array of mapping info to accomodate more than one flash type per board.
7 *
8 * Copyright 2005-2007 PMC-Sierra, Inc.
9 *
10 * This program is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU General Public License as published by the
12 * Free Software Foundation; either version 2 of the License, or (at your
13 * option) any later version.
14 *
15 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
16 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
17 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
18 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
21 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
22 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 *
26 * You should have received a copy of the GNU General Public License along
27 * with this program; if not, write to the Free Software Foundation, Inc.,
28 * 675 Mass Ave, Cambridge, MA 02139, USA.
29 */
30
31#include <linux/module.h>
32#include <linux/types.h>
33#include <linux/kernel.h>
34#include <linux/mtd/mtd.h>
35#include <linux/mtd/map.h>
36#include <linux/mtd/partitions.h>
37
38#include <asm/io.h>
39
40#include <msp_prom.h>
41#include <msp_regs.h>
42
43
44static struct mtd_info **msp_flash;
45static struct mtd_partition **msp_parts;
46static struct map_info *msp_maps;
47static int fcnt;
48
49#define DEBUG_MARKER printk(KERN_NOTICE "%s[%d]\n",__FUNCTION__,__LINE__)
50
51int __init init_msp_flash(void)
52{
53 int i, j;
54 int offset, coff;
55 char *env;
56 int pcnt;
57 char flash_name[] = "flash0";
58 char part_name[] = "flash0_0";
59 unsigned addr, size;
60
61 /* If ELB is disabled by "ful-mux" mode, we can't get at flash */
62 if ((*DEV_ID_REG & DEV_ID_SINGLE_PC) &&
63 (*ELB_1PC_EN_REG & SINGLE_PCCARD)) {
64 printk(KERN_NOTICE "Single PC Card mode: no flash access\n");
65 return -ENXIO;
66 }
67
68 /* examine the prom environment for flash devices */
69 for (fcnt = 0; (env = prom_getenv(flash_name)); fcnt++)
70 flash_name[5] = '0' + fcnt + 1;
71
72 if (fcnt < 1)
73 return -ENXIO;
74
75 printk(KERN_NOTICE "Found %d PMC flash devices\n", fcnt);
76 msp_flash = (struct mtd_info **)kmalloc(
77 fcnt * sizeof(struct map_info *), GFP_KERNEL);
78 msp_parts = (struct mtd_partition **)kmalloc(
79 fcnt * sizeof(struct mtd_partition *), GFP_KERNEL);
80 msp_maps = (struct map_info *)kmalloc(
81 fcnt * sizeof(struct mtd_info), GFP_KERNEL);
82 memset(msp_maps, 0, fcnt * sizeof(struct mtd_info));
83
84 /* loop over the flash devices, initializing each */
85 for (i = 0; i < fcnt; i++) {
86 /* examine the prom environment for flash partititions */
87 part_name[5] = '0' + i;
88 part_name[7] = '0';
89 for (pcnt = 0; (env = prom_getenv(part_name)); pcnt++)
90 part_name[7] = '0' + pcnt + 1;
91
92 if (pcnt == 0) {
93 printk(KERN_NOTICE "Skipping flash device %d "
94 "(no partitions defined)\n", i);
95 continue;
96 }
97
98 msp_parts[i] = (struct mtd_partition *)kmalloc(
99 pcnt * sizeof(struct mtd_partition), GFP_KERNEL);
100 memset(msp_parts[i], 0, pcnt * sizeof(struct mtd_partition));
101
102 /* now initialize the devices proper */
103 flash_name[5] = '0' + i;
104 env = prom_getenv(flash_name);
105
106 if (sscanf(env, "%x:%x", &addr, &size) < 2)
107 return -ENXIO;
108 addr = CPHYSADDR(addr);
109
110 printk(KERN_NOTICE
111 "MSP flash device \"%s\": 0x%08x at 0x%08x\n",
112 flash_name, size, addr);
113 /* This must matchs the actual size of the flash chip */
114 msp_maps[i].size = size;
115 msp_maps[i].phys = addr;
116
117 /*
118 * Platforms have a specific limit of the size of memory
119 * which may be mapped for flash:
120 */
121 if (size > CONFIG_MSP_FLASH_MAP_LIMIT)
122 size = CONFIG_MSP_FLASH_MAP_LIMIT;
123 msp_maps[i].virt = ioremap(addr, size);
124 msp_maps[i].bankwidth = 1;
125 msp_maps[i].name = strncpy(kmalloc(7, GFP_KERNEL),
126 flash_name, 7);
127
128 if (msp_maps[i].virt == NULL)
129 return -ENXIO;
130
131 for (j = 0; j < pcnt; j++) {
132 part_name[5] = '0' + i;
133 part_name[7] = '0' + j;
134
135 env = prom_getenv(part_name);
136
137 if (sscanf(env, "%x:%x:%n", &offset, &size, &coff) < 2)
138 return -ENXIO;
139
140 msp_parts[i][j].size = size;
141 msp_parts[i][j].offset = offset;
142 msp_parts[i][j].name = env + coff;
143 }
144
145 /* now probe and add the device */
146 simple_map_init(&msp_maps[i]);
147 msp_flash[i] = do_map_probe("cfi_probe", &msp_maps[i]);
148 if (msp_flash[i]) {
149 msp_flash[i]->owner = THIS_MODULE;
150 add_mtd_partitions(msp_flash[i], msp_parts[i], pcnt);
151 } else {
152 printk(KERN_ERR "map probe failed for flash\n");
153 return -ENXIO;
154 }
155 }
156
157 return 0;
158}
159
160static void __exit cleanup_msp_flash(void)
161{
162 int i;
163
164 for (i = 0; i < sizeof(msp_flash) / sizeof(struct mtd_info **); i++) {
165 del_mtd_partitions(msp_flash[i]);
166 map_destroy(msp_flash[i]);
167 iounmap((void *)msp_maps[i].virt);
168
169 /* free the memory */
170 kfree(msp_maps[i].name);
171 kfree(msp_parts[i]);
172 }
173
174 kfree(msp_flash);
175 kfree(msp_parts);
176 kfree(msp_maps);
177}
178
179MODULE_AUTHOR("PMC-Sierra, Inc");
180MODULE_DESCRIPTION("MTD map driver for PMC-Sierra MSP boards");
181MODULE_LICENSE("GPL");
182
183module_init(init_msp_flash);
184module_exit(cleanup_msp_flash);
diff --git a/drivers/mtd/maps/pmcmsp-ramroot.c b/drivers/mtd/maps/pmcmsp-ramroot.c
new file mode 100644
index 000000000000..18049bceba8d
--- /dev/null
+++ b/drivers/mtd/maps/pmcmsp-ramroot.c
@@ -0,0 +1,105 @@
1/*
2 * Mapping of the rootfs in a physical region of memory
3 *
4 * Copyright (C) 2005-2007 PMC-Sierra Inc.
5 * Author: Andrew Hughes, Andrew_Hughes@pmc-sierra.com
6 *
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License as published by the
9 * Free Software Foundation; either version 2 of the License, or (at your
10 * option) any later version.
11 *
12 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
13 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
14 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
15 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
16 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
17 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
18 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
19 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
20 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
21 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
22 *
23 * You should have received a copy of the GNU General Public License along
24 * with this program; if not, write to the Free Software Foundation, Inc.,
25 * 675 Mass Ave, Cambridge, MA 02139, USA.
26 */
27
28#include <linux/module.h>
29#include <linux/types.h>
30#include <linux/kernel.h>
31#include <linux/init.h>
32#include <linux/slab.h>
33#include <linux/fs.h>
34#include <linux/root_dev.h>
35#include <linux/mtd/mtd.h>
36#include <linux/mtd/map.h>
37
38#include <asm/io.h>
39
40#include <msp_prom.h>
41
42static struct mtd_info *rr_mtd;
43
44struct map_info rr_map = {
45 .name = "ramroot",
46 .bankwidth = 4,
47};
48
49static int __init init_rrmap(void)
50{
51 void *ramroot_start;
52 unsigned long ramroot_size;
53
54 /* Check for supported rootfs types */
55 if (get_ramroot(&ramroot_start, &ramroot_size)) {
56 rr_map.phys = CPHYSADDR(ramroot_start);
57 rr_map.size = ramroot_size;
58
59 printk(KERN_NOTICE
60 "PMC embedded root device: 0x%08lx @ 0x%08lx\n",
61 rr_map.size, (unsigned long)rr_map.phys);
62 } else {
63 printk(KERN_ERR
64 "init_rrmap: no supported embedded rootfs detected!\n");
65 return -ENXIO;
66 }
67
68 /* Map rootfs to I/O space for block device driver */
69 rr_map.virt = ioremap(rr_map.phys, rr_map.size);
70 if (!rr_map.virt) {
71 printk(KERN_ERR "Failed to ioremap\n");
72 return -EIO;
73 }
74
75 simple_map_init(&rr_map);
76
77 rr_mtd = do_map_probe("map_ram", &rr_map);
78 if (rr_mtd) {
79 rr_mtd->owner = THIS_MODULE;
80
81 add_mtd_device(rr_mtd);
82 ROOT_DEV = MKDEV(MTD_BLOCK_MAJOR, rr_mtd->index);
83
84 return 0;
85 }
86
87 iounmap(rr_map.virt);
88 return -ENXIO;
89}
90
91static void __exit cleanup_rrmap(void)
92{
93 del_mtd_device(rr_mtd);
94 map_destroy(rr_mtd);
95
96 iounmap(rr_map.virt);
97 rr_map.virt = NULL;
98}
99
100MODULE_AUTHOR("PMC-Sierra, Inc");
101MODULE_DESCRIPTION("MTD map driver for embedded PMC-Sierra MSP filesystem");
102MODULE_LICENSE("GPL");
103
104module_init(init_rrmap);
105module_exit(cleanup_rrmap);
diff --git a/drivers/mtd/mtd_blkdevs.c b/drivers/mtd/mtd_blkdevs.c
index b879a66daa9e..524b83b5ebf5 100644
--- a/drivers/mtd/mtd_blkdevs.c
+++ b/drivers/mtd/mtd_blkdevs.c
@@ -20,6 +20,7 @@
20#include <linux/hdreg.h> 20#include <linux/hdreg.h>
21#include <linux/init.h> 21#include <linux/init.h>
22#include <linux/mutex.h> 22#include <linux/mutex.h>
23#include <linux/kthread.h>
23#include <asm/uaccess.h> 24#include <asm/uaccess.h>
24 25
25static LIST_HEAD(blktrans_majors); 26static LIST_HEAD(blktrans_majors);
@@ -28,9 +29,7 @@ extern struct mutex mtd_table_mutex;
28extern struct mtd_info *mtd_table[]; 29extern struct mtd_info *mtd_table[];
29 30
30struct mtd_blkcore_priv { 31struct mtd_blkcore_priv {
31 struct completion thread_dead; 32 struct task_struct *thread;
32 int exiting;
33 wait_queue_head_t thread_wq;
34 struct request_queue *rq; 33 struct request_queue *rq;
35 spinlock_t queue_lock; 34 spinlock_t queue_lock;
36}; 35};
@@ -83,38 +82,19 @@ static int mtd_blktrans_thread(void *arg)
83 /* we might get involved when memory gets low, so use PF_MEMALLOC */ 82 /* we might get involved when memory gets low, so use PF_MEMALLOC */
84 current->flags |= PF_MEMALLOC | PF_NOFREEZE; 83 current->flags |= PF_MEMALLOC | PF_NOFREEZE;
85 84
86 daemonize("%sd", tr->name);
87
88 /* daemonize() doesn't do this for us since some kernel threads
89 actually want to deal with signals. We can't just call
90 exit_sighand() since that'll cause an oops when we finally
91 do exit. */
92 spin_lock_irq(&current->sighand->siglock);
93 sigfillset(&current->blocked);
94 recalc_sigpending();
95 spin_unlock_irq(&current->sighand->siglock);
96
97 spin_lock_irq(rq->queue_lock); 85 spin_lock_irq(rq->queue_lock);
98 86 while (!kthread_should_stop()) {
99 while (!tr->blkcore_priv->exiting) {
100 struct request *req; 87 struct request *req;
101 struct mtd_blktrans_dev *dev; 88 struct mtd_blktrans_dev *dev;
102 int res = 0; 89 int res = 0;
103 DECLARE_WAITQUEUE(wait, current);
104 90
105 req = elv_next_request(rq); 91 req = elv_next_request(rq);
106 92
107 if (!req) { 93 if (!req) {
108 add_wait_queue(&tr->blkcore_priv->thread_wq, &wait);
109 set_current_state(TASK_INTERRUPTIBLE); 94 set_current_state(TASK_INTERRUPTIBLE);
110
111 spin_unlock_irq(rq->queue_lock); 95 spin_unlock_irq(rq->queue_lock);
112
113 schedule(); 96 schedule();
114 remove_wait_queue(&tr->blkcore_priv->thread_wq, &wait);
115
116 spin_lock_irq(rq->queue_lock); 97 spin_lock_irq(rq->queue_lock);
117
118 continue; 98 continue;
119 } 99 }
120 100
@@ -133,13 +113,13 @@ static int mtd_blktrans_thread(void *arg)
133 } 113 }
134 spin_unlock_irq(rq->queue_lock); 114 spin_unlock_irq(rq->queue_lock);
135 115
136 complete_and_exit(&tr->blkcore_priv->thread_dead, 0); 116 return 0;
137} 117}
138 118
139static void mtd_blktrans_request(struct request_queue *rq) 119static void mtd_blktrans_request(struct request_queue *rq)
140{ 120{
141 struct mtd_blktrans_ops *tr = rq->queuedata; 121 struct mtd_blktrans_ops *tr = rq->queuedata;
142 wake_up(&tr->blkcore_priv->thread_wq); 122 wake_up_process(tr->blkcore_priv->thread);
143} 123}
144 124
145 125
@@ -388,8 +368,6 @@ int register_mtd_blktrans(struct mtd_blktrans_ops *tr)
388 return ret; 368 return ret;
389 } 369 }
390 spin_lock_init(&tr->blkcore_priv->queue_lock); 370 spin_lock_init(&tr->blkcore_priv->queue_lock);
391 init_completion(&tr->blkcore_priv->thread_dead);
392 init_waitqueue_head(&tr->blkcore_priv->thread_wq);
393 371
394 tr->blkcore_priv->rq = blk_init_queue(mtd_blktrans_request, &tr->blkcore_priv->queue_lock); 372 tr->blkcore_priv->rq = blk_init_queue(mtd_blktrans_request, &tr->blkcore_priv->queue_lock);
395 if (!tr->blkcore_priv->rq) { 373 if (!tr->blkcore_priv->rq) {
@@ -403,13 +381,14 @@ int register_mtd_blktrans(struct mtd_blktrans_ops *tr)
403 blk_queue_hardsect_size(tr->blkcore_priv->rq, tr->blksize); 381 blk_queue_hardsect_size(tr->blkcore_priv->rq, tr->blksize);
404 tr->blkshift = ffs(tr->blksize) - 1; 382 tr->blkshift = ffs(tr->blksize) - 1;
405 383
406 ret = kernel_thread(mtd_blktrans_thread, tr, CLONE_KERNEL); 384 tr->blkcore_priv->thread = kthread_run(mtd_blktrans_thread, tr,
407 if (ret < 0) { 385 "%sd", tr->name);
386 if (IS_ERR(tr->blkcore_priv->thread)) {
408 blk_cleanup_queue(tr->blkcore_priv->rq); 387 blk_cleanup_queue(tr->blkcore_priv->rq);
409 unregister_blkdev(tr->major, tr->name); 388 unregister_blkdev(tr->major, tr->name);
410 kfree(tr->blkcore_priv); 389 kfree(tr->blkcore_priv);
411 mutex_unlock(&mtd_table_mutex); 390 mutex_unlock(&mtd_table_mutex);
412 return ret; 391 return PTR_ERR(tr->blkcore_priv->thread);
413 } 392 }
414 393
415 INIT_LIST_HEAD(&tr->devs); 394 INIT_LIST_HEAD(&tr->devs);
@@ -432,9 +411,7 @@ int deregister_mtd_blktrans(struct mtd_blktrans_ops *tr)
432 mutex_lock(&mtd_table_mutex); 411 mutex_lock(&mtd_table_mutex);
433 412
434 /* Clean up the kernel thread */ 413 /* Clean up the kernel thread */
435 tr->blkcore_priv->exiting = 1; 414 kthread_stop(tr->blkcore_priv->thread);
436 wake_up(&tr->blkcore_priv->thread_wq);
437 wait_for_completion(&tr->blkcore_priv->thread_dead);
438 415
439 /* Remove it from the list of active majors */ 416 /* Remove it from the list of active majors */
440 list_del(&tr->list); 417 list_del(&tr->list);
diff --git a/drivers/mtd/mtdchar.c b/drivers/mtd/mtdchar.c
index 1592eac64e57..8c86b802f212 100644
--- a/drivers/mtd/mtdchar.c
+++ b/drivers/mtd/mtdchar.c
@@ -553,7 +553,7 @@ static int mtd_ioctl(struct inode *inode, struct file *file,
553 ops.datbuf = NULL; 553 ops.datbuf = NULL;
554 ops.mode = MTD_OOB_PLACE; 554 ops.mode = MTD_OOB_PLACE;
555 555
556 if (ops.ooboffs && ops.len > (mtd->oobsize - ops.ooboffs)) 556 if (ops.ooboffs && ops.ooblen > (mtd->oobsize - ops.ooboffs))
557 return -EINVAL; 557 return -EINVAL;
558 558
559 ops.oobbuf = kmalloc(buf.length, GFP_KERNEL); 559 ops.oobbuf = kmalloc(buf.length, GFP_KERNEL);
diff --git a/drivers/mtd/nand/Kconfig b/drivers/mtd/nand/Kconfig
index 2d12dcdd740c..4e62afe0c0f3 100644
--- a/drivers/mtd/nand/Kconfig
+++ b/drivers/mtd/nand/Kconfig
@@ -1,10 +1,7 @@
1# drivers/mtd/nand/Kconfig 1# drivers/mtd/nand/Kconfig
2# $Id: Kconfig,v 1.35 2005/11/07 11:14:30 gleixner Exp $ 2# $Id: Kconfig,v 1.35 2005/11/07 11:14:30 gleixner Exp $
3 3
4menu "NAND Flash Device Drivers" 4menuconfig MTD_NAND
5 depends on MTD!=n
6
7config MTD_NAND
8 tristate "NAND Device Support" 5 tristate "NAND Device Support"
9 depends on MTD 6 depends on MTD
10 select MTD_NAND_IDS 7 select MTD_NAND_IDS
@@ -13,9 +10,10 @@ config MTD_NAND
13 devices. For further information see 10 devices. For further information see
14 <http://www.linux-mtd.infradead.org/doc/nand.html>. 11 <http://www.linux-mtd.infradead.org/doc/nand.html>.
15 12
13if MTD_NAND
14
16config MTD_NAND_VERIFY_WRITE 15config MTD_NAND_VERIFY_WRITE
17 bool "Verify NAND page writes" 16 bool "Verify NAND page writes"
18 depends on MTD_NAND
19 help 17 help
20 This adds an extra check when data is written to the flash. The 18 This adds an extra check when data is written to the flash. The
21 NAND flash device internally checks only bits transitioning 19 NAND flash device internally checks only bits transitioning
@@ -25,53 +23,61 @@ config MTD_NAND_VERIFY_WRITE
25 23
26config MTD_NAND_ECC_SMC 24config MTD_NAND_ECC_SMC
27 bool "NAND ECC Smart Media byte order" 25 bool "NAND ECC Smart Media byte order"
28 depends on MTD_NAND
29 default n 26 default n
30 help 27 help
31 Software ECC according to the Smart Media Specification. 28 Software ECC according to the Smart Media Specification.
32 The original Linux implementation had byte 0 and 1 swapped. 29 The original Linux implementation had byte 0 and 1 swapped.
33 30
31config MTD_NAND_MUSEUM_IDS
32 bool "Enable chip ids for obsolete ancient NAND devices"
33 depends on MTD_NAND
34 default n
35 help
36 Enable this option only when your board has first generation
37 NAND chips (page size 256 byte, erase size 4-8KiB). The IDs
38 of these chips were reused by later, larger chips.
39
34config MTD_NAND_AUTCPU12 40config MTD_NAND_AUTCPU12
35 tristate "SmartMediaCard on autronix autcpu12 board" 41 tristate "SmartMediaCard on autronix autcpu12 board"
36 depends on MTD_NAND && ARCH_AUTCPU12 42 depends on ARCH_AUTCPU12
37 help 43 help
38 This enables the driver for the autronix autcpu12 board to 44 This enables the driver for the autronix autcpu12 board to
39 access the SmartMediaCard. 45 access the SmartMediaCard.
40 46
41config MTD_NAND_EDB7312 47config MTD_NAND_EDB7312
42 tristate "Support for Cirrus Logic EBD7312 evaluation board" 48 tristate "Support for Cirrus Logic EBD7312 evaluation board"
43 depends on MTD_NAND && ARCH_EDB7312 49 depends on ARCH_EDB7312
44 help 50 help
45 This enables the driver for the Cirrus Logic EBD7312 evaluation 51 This enables the driver for the Cirrus Logic EBD7312 evaluation
46 board to access the onboard NAND Flash. 52 board to access the onboard NAND Flash.
47 53
48config MTD_NAND_H1900 54config MTD_NAND_H1900
49 tristate "iPAQ H1900 flash" 55 tristate "iPAQ H1900 flash"
50 depends on MTD_NAND && ARCH_PXA && MTD_PARTITIONS 56 depends on ARCH_PXA && MTD_PARTITIONS
51 help 57 help
52 This enables the driver for the iPAQ h1900 flash. 58 This enables the driver for the iPAQ h1900 flash.
53 59
54config MTD_NAND_SPIA 60config MTD_NAND_SPIA
55 tristate "NAND Flash device on SPIA board" 61 tristate "NAND Flash device on SPIA board"
56 depends on ARCH_P720T && MTD_NAND 62 depends on ARCH_P720T
57 help 63 help
58 If you had to ask, you don't have one. Say 'N'. 64 If you had to ask, you don't have one. Say 'N'.
59 65
60config MTD_NAND_AMS_DELTA 66config MTD_NAND_AMS_DELTA
61 tristate "NAND Flash device on Amstrad E3" 67 tristate "NAND Flash device on Amstrad E3"
62 depends on MACH_AMS_DELTA && MTD_NAND 68 depends on MACH_AMS_DELTA
63 help 69 help
64 Support for NAND flash on Amstrad E3 (Delta). 70 Support for NAND flash on Amstrad E3 (Delta).
65 71
66config MTD_NAND_TOTO 72config MTD_NAND_TOTO
67 tristate "NAND Flash device on TOTO board" 73 tristate "NAND Flash device on TOTO board"
68 depends on ARCH_OMAP && MTD_NAND && BROKEN 74 depends on ARCH_OMAP && BROKEN
69 help 75 help
70 Support for NAND flash on Texas Instruments Toto platform. 76 Support for NAND flash on Texas Instruments Toto platform.
71 77
72config MTD_NAND_TS7250 78config MTD_NAND_TS7250
73 tristate "NAND Flash device on TS-7250 board" 79 tristate "NAND Flash device on TS-7250 board"
74 depends on MACH_TS72XX && MTD_NAND 80 depends on MACH_TS72XX
75 help 81 help
76 Support for NAND flash on Technologic Systems TS-7250 platform. 82 Support for NAND flash on Technologic Systems TS-7250 platform.
77 83
@@ -80,14 +86,14 @@ config MTD_NAND_IDS
80 86
81config MTD_NAND_AU1550 87config MTD_NAND_AU1550
82 tristate "Au1550/1200 NAND support" 88 tristate "Au1550/1200 NAND support"
83 depends on (SOC_AU1200 || SOC_AU1550) && MTD_NAND 89 depends on SOC_AU1200 || SOC_AU1550
84 help 90 help
85 This enables the driver for the NAND flash controller on the 91 This enables the driver for the NAND flash controller on the
86 AMD/Alchemy 1550 SOC. 92 AMD/Alchemy 1550 SOC.
87 93
88config MTD_NAND_RTC_FROM4 94config MTD_NAND_RTC_FROM4
89 tristate "Renesas Flash ROM 4-slot interface board (FROM_BOARD4)" 95 tristate "Renesas Flash ROM 4-slot interface board (FROM_BOARD4)"
90 depends on MTD_NAND && SH_SOLUTION_ENGINE 96 depends on SH_SOLUTION_ENGINE
91 select REED_SOLOMON 97 select REED_SOLOMON
92 select REED_SOLOMON_DEC8 98 select REED_SOLOMON_DEC8
93 select BITREVERSE 99 select BITREVERSE
@@ -97,13 +103,13 @@ config MTD_NAND_RTC_FROM4
97 103
98config MTD_NAND_PPCHAMELEONEVB 104config MTD_NAND_PPCHAMELEONEVB
99 tristate "NAND Flash device on PPChameleonEVB board" 105 tristate "NAND Flash device on PPChameleonEVB board"
100 depends on PPCHAMELEONEVB && MTD_NAND && BROKEN 106 depends on PPCHAMELEONEVB && BROKEN
101 help 107 help
102 This enables the NAND flash driver on the PPChameleon EVB Board. 108 This enables the NAND flash driver on the PPChameleon EVB Board.
103 109
104config MTD_NAND_S3C2410 110config MTD_NAND_S3C2410
105 tristate "NAND Flash support for S3C2410/S3C2440 SoC" 111 tristate "NAND Flash support for S3C2410/S3C2440 SoC"
106 depends on ARCH_S3C2410 && MTD_NAND 112 depends on ARCH_S3C2410
107 help 113 help
108 This enables the NAND flash controller on the S3C2410 and S3C2440 114 This enables the NAND flash controller on the S3C2410 and S3C2440
109 SoCs 115 SoCs
@@ -128,7 +134,7 @@ config MTD_NAND_S3C2410_HWECC
128 134
129config MTD_NAND_NDFC 135config MTD_NAND_NDFC
130 tristate "NDFC NanD Flash Controller" 136 tristate "NDFC NanD Flash Controller"
131 depends on MTD_NAND && 44x 137 depends on 44x
132 select MTD_NAND_ECC_SMC 138 select MTD_NAND_ECC_SMC
133 help 139 help
134 NDFC Nand Flash Controllers are integrated in EP44x SoCs 140 NDFC Nand Flash Controllers are integrated in EP44x SoCs
@@ -145,7 +151,7 @@ config MTD_NAND_S3C2410_CLKSTOP
145 151
146config MTD_NAND_DISKONCHIP 152config MTD_NAND_DISKONCHIP
147 tristate "DiskOnChip 2000, Millennium and Millennium Plus (NAND reimplementation) (EXPERIMENTAL)" 153 tristate "DiskOnChip 2000, Millennium and Millennium Plus (NAND reimplementation) (EXPERIMENTAL)"
148 depends on MTD_NAND && EXPERIMENTAL 154 depends on EXPERIMENTAL
149 select REED_SOLOMON 155 select REED_SOLOMON
150 select REED_SOLOMON_DEC16 156 select REED_SOLOMON_DEC16
151 help 157 help
@@ -215,11 +221,11 @@ config MTD_NAND_DISKONCHIP_BBTWRITE
215 221
216config MTD_NAND_SHARPSL 222config MTD_NAND_SHARPSL
217 tristate "Support for NAND Flash on Sharp SL Series (C7xx + others)" 223 tristate "Support for NAND Flash on Sharp SL Series (C7xx + others)"
218 depends on MTD_NAND && ARCH_PXA 224 depends on ARCH_PXA
219 225
220config MTD_NAND_BASLER_EXCITE 226config MTD_NAND_BASLER_EXCITE
221 tristate "Support for NAND Flash on Basler eXcite" 227 tristate "Support for NAND Flash on Basler eXcite"
222 depends on MTD_NAND && BASLER_EXCITE 228 depends on BASLER_EXCITE
223 help 229 help
224 This enables the driver for the NAND flash device found on the 230 This enables the driver for the NAND flash device found on the
225 Basler eXcite Smart Camera. If built as a module, the driver 231 Basler eXcite Smart Camera. If built as a module, the driver
@@ -227,14 +233,14 @@ config MTD_NAND_BASLER_EXCITE
227 233
228config MTD_NAND_CAFE 234config MTD_NAND_CAFE
229 tristate "NAND support for OLPC CAFÉ chip" 235 tristate "NAND support for OLPC CAFÉ chip"
230 depends on MTD_NAND && PCI 236 depends on PCI
231 help 237 help
232 Use NAND flash attached to the CAFÉ chip designed for the $100 238 Use NAND flash attached to the CAFÉ chip designed for the $100
233 laptop. 239 laptop.
234 240
235config MTD_NAND_CS553X 241config MTD_NAND_CS553X
236 tristate "NAND support for CS5535/CS5536 (AMD Geode companion chip)" 242 tristate "NAND support for CS5535/CS5536 (AMD Geode companion chip)"
237 depends on MTD_NAND && X86_32 && (X86_PC || X86_GENERICARCH) 243 depends on X86_32 && (X86_PC || X86_GENERICARCH)
238 help 244 help
239 The CS553x companion chips for the AMD Geode processor 245 The CS553x companion chips for the AMD Geode processor
240 include NAND flash controllers with built-in hardware ECC 246 include NAND flash controllers with built-in hardware ECC
@@ -247,16 +253,16 @@ config MTD_NAND_CS553X
247 253
248config MTD_NAND_AT91 254config MTD_NAND_AT91
249 bool "Support for NAND Flash / SmartMedia on AT91" 255 bool "Support for NAND Flash / SmartMedia on AT91"
250 depends on MTD_NAND && ARCH_AT91 256 depends on ARCH_AT91
251 help 257 help
252 Enables support for NAND Flash / Smart Media Card interface 258 Enables support for NAND Flash / Smart Media Card interface
253 on Atmel AT91 processors. 259 on Atmel AT91 processors.
254 260
255config MTD_NAND_NANDSIM 261config MTD_NAND_NANDSIM
256 tristate "Support for NAND Flash Simulator" 262 tristate "Support for NAND Flash Simulator"
257 depends on MTD_NAND && MTD_PARTITIONS 263 depends on MTD_PARTITIONS
258 help 264 help
259 The simulator may simulate various NAND flash chips for the 265 The simulator may simulate various NAND flash chips for the
260 MTD nand layer. 266 MTD nand layer.
261 267
262endmenu 268endif # MTD_NAND
diff --git a/drivers/mtd/nand/cafe.c b/drivers/mtd/nand/cafe.c
index fd6bb3ed40df..c328a7514510 100644
--- a/drivers/mtd/nand/cafe.c
+++ b/drivers/mtd/nand/cafe.c
@@ -530,7 +530,6 @@ static int __devinit cafe_nand_probe(struct pci_dev *pdev,
530{ 530{
531 struct mtd_info *mtd; 531 struct mtd_info *mtd;
532 struct cafe_priv *cafe; 532 struct cafe_priv *cafe;
533 uint32_t timing1, timing2, timing3;
534 uint32_t ctrl; 533 uint32_t ctrl;
535 int err = 0; 534 int err = 0;
536 535
@@ -587,21 +586,19 @@ static int __devinit cafe_nand_probe(struct pci_dev *pdev,
587 } 586 }
588 587
589 if (numtimings == 3) { 588 if (numtimings == 3) {
590 timing1 = timing[0];
591 timing2 = timing[1];
592 timing3 = timing[2];
593 cafe_dev_dbg(&cafe->pdev->dev, "Using provided timings (%08x %08x %08x)\n", 589 cafe_dev_dbg(&cafe->pdev->dev, "Using provided timings (%08x %08x %08x)\n",
594 timing1, timing2, timing3); 590 timing[0], timing[1], timing[2]);
595 } else { 591 } else {
596 timing1 = cafe_readl(cafe, NAND_TIMING1); 592 timing[0] = cafe_readl(cafe, NAND_TIMING1);
597 timing2 = cafe_readl(cafe, NAND_TIMING2); 593 timing[1] = cafe_readl(cafe, NAND_TIMING2);
598 timing3 = cafe_readl(cafe, NAND_TIMING3); 594 timing[2] = cafe_readl(cafe, NAND_TIMING3);
599 595
600 if (timing1 | timing2 | timing3) { 596 if (timing[0] | timing[1] | timing[2]) {
601 cafe_dev_dbg(&cafe->pdev->dev, "Timing registers already set (%08x %08x %08x)\n", timing1, timing2, timing3); 597 cafe_dev_dbg(&cafe->pdev->dev, "Timing registers already set (%08x %08x %08x)\n",
598 timing[0], timing[1], timing[2]);
602 } else { 599 } else {
603 dev_warn(&cafe->pdev->dev, "Timing registers unset; using most conservative defaults\n"); 600 dev_warn(&cafe->pdev->dev, "Timing registers unset; using most conservative defaults\n");
604 timing1 = timing2 = timing3 = 0xffffffff; 601 timing[0] = timing[1] = timing[2] = 0xffffffff;
605 } 602 }
606 } 603 }
607 604
@@ -609,9 +606,9 @@ static int __devinit cafe_nand_probe(struct pci_dev *pdev,
609 cafe_writel(cafe, 1, NAND_RESET); 606 cafe_writel(cafe, 1, NAND_RESET);
610 cafe_writel(cafe, 0, NAND_RESET); 607 cafe_writel(cafe, 0, NAND_RESET);
611 608
612 cafe_writel(cafe, timing1, NAND_TIMING1); 609 cafe_writel(cafe, timing[0], NAND_TIMING1);
613 cafe_writel(cafe, timing2, NAND_TIMING2); 610 cafe_writel(cafe, timing[1], NAND_TIMING2);
614 cafe_writel(cafe, timing3, NAND_TIMING3); 611 cafe_writel(cafe, timing[2], NAND_TIMING3);
615 612
616 cafe_writel(cafe, 0xffffffff, NAND_IRQ_MASK); 613 cafe_writel(cafe, 0xffffffff, NAND_IRQ_MASK);
617 err = request_irq(pdev->irq, &cafe_nand_interrupt, IRQF_SHARED, 614 err = request_irq(pdev->irq, &cafe_nand_interrupt, IRQF_SHARED,
diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c
index 6af37b8cff65..04de315e4937 100644
--- a/drivers/mtd/nand/nand_base.c
+++ b/drivers/mtd/nand/nand_base.c
@@ -312,7 +312,7 @@ static int nand_block_bad(struct mtd_info *mtd, loff_t ofs, int getchip)
312 /* Select the NAND device */ 312 /* Select the NAND device */
313 chip->select_chip(mtd, chipnr); 313 chip->select_chip(mtd, chipnr);
314 } else 314 } else
315 page = (int)ofs; 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,
@@ -350,7 +350,7 @@ static int nand_default_block_markbad(struct mtd_info *mtd, loff_t ofs)
350 int block, ret; 350 int block, ret;
351 351
352 /* Get block number */ 352 /* Get block number */
353 block = ((int)ofs) >> chip->bbt_erase_shift; 353 block = (int)(ofs >> chip->bbt_erase_shift);
354 if (chip->bbt) 354 if (chip->bbt)
355 chip->bbt[block >> 2] |= 0x01 << ((block & 0x03) << 1); 355 chip->bbt[block >> 2] |= 0x01 << ((block & 0x03) << 1);
356 356
@@ -771,7 +771,7 @@ static int nand_read_page_swecc(struct mtd_info *mtd, struct nand_chip *chip,
771 uint8_t *ecc_code = chip->buffers->ecccode; 771 uint8_t *ecc_code = chip->buffers->ecccode;
772 int *eccpos = chip->ecc.layout->eccpos; 772 int *eccpos = chip->ecc.layout->eccpos;
773 773
774 nand_read_page_raw(mtd, chip, buf); 774 chip->ecc.read_page_raw(mtd, chip, buf);
775 775
776 for (i = 0; eccsteps; eccsteps--, i += eccbytes, p += eccsize) 776 for (i = 0; eccsteps; eccsteps--, i += eccbytes, p += eccsize)
777 chip->ecc.calculate(mtd, p, &ecc_calc[i]); 777 chip->ecc.calculate(mtd, p, &ecc_calc[i]);
@@ -1426,7 +1426,7 @@ static void nand_write_page_swecc(struct mtd_info *mtd, struct nand_chip *chip,
1426 for (i = 0; i < chip->ecc.total; i++) 1426 for (i = 0; i < chip->ecc.total; i++)
1427 chip->oob_poi[eccpos[i]] = ecc_calc[i]; 1427 chip->oob_poi[eccpos[i]] = ecc_calc[i];
1428 1428
1429 nand_write_page_raw(mtd, chip, buf); 1429 chip->ecc.write_page_raw(mtd, chip, buf);
1430} 1430}
1431 1431
1432/** 1432/**
diff --git a/drivers/mtd/nand/nand_ids.c b/drivers/mtd/nand/nand_ids.c
index 2e2cdf2fc91d..2fc674a190cf 100644
--- a/drivers/mtd/nand/nand_ids.c
+++ b/drivers/mtd/nand/nand_ids.c
@@ -24,6 +24,8 @@
24* 512 512 Byte page size 24* 512 512 Byte page size
25*/ 25*/
26struct nand_flash_dev nand_flash_ids[] = { 26struct nand_flash_dev nand_flash_ids[] = {
27
28#ifdef CONFIG_MTD_NAND_MUSEUM_IDS
27 {"NAND 1MiB 5V 8-bit", 0x6e, 256, 1, 0x1000, 0}, 29 {"NAND 1MiB 5V 8-bit", 0x6e, 256, 1, 0x1000, 0},
28 {"NAND 2MiB 5V 8-bit", 0x64, 256, 2, 0x1000, 0}, 30 {"NAND 2MiB 5V 8-bit", 0x64, 256, 2, 0x1000, 0},
29 {"NAND 4MiB 5V 8-bit", 0x6b, 512, 4, 0x2000, 0}, 31 {"NAND 4MiB 5V 8-bit", 0x6b, 512, 4, 0x2000, 0},
@@ -39,6 +41,7 @@ struct nand_flash_dev nand_flash_ids[] = {
39 {"NAND 8MiB 3,3V 8-bit", 0xe6, 512, 8, 0x2000, 0}, 41 {"NAND 8MiB 3,3V 8-bit", 0xe6, 512, 8, 0x2000, 0},
40 {"NAND 8MiB 1,8V 16-bit", 0x49, 512, 8, 0x2000, NAND_BUSWIDTH_16}, 42 {"NAND 8MiB 1,8V 16-bit", 0x49, 512, 8, 0x2000, NAND_BUSWIDTH_16},
41 {"NAND 8MiB 3,3V 16-bit", 0x59, 512, 8, 0x2000, NAND_BUSWIDTH_16}, 43 {"NAND 8MiB 3,3V 16-bit", 0x59, 512, 8, 0x2000, NAND_BUSWIDTH_16},
44#endif
42 45
43 {"NAND 16MiB 1,8V 8-bit", 0x33, 512, 16, 0x4000, 0}, 46 {"NAND 16MiB 1,8V 8-bit", 0x33, 512, 16, 0x4000, 0},
44 {"NAND 16MiB 3,3V 8-bit", 0x73, 512, 16, 0x4000, 0}, 47 {"NAND 16MiB 3,3V 8-bit", 0x73, 512, 16, 0x4000, 0},
@@ -137,6 +140,7 @@ struct nand_manufacturers nand_manuf_ids[] = {
137 {NAND_MFR_RENESAS, "Renesas"}, 140 {NAND_MFR_RENESAS, "Renesas"},
138 {NAND_MFR_STMICRO, "ST Micro"}, 141 {NAND_MFR_STMICRO, "ST Micro"},
139 {NAND_MFR_HYNIX, "Hynix"}, 142 {NAND_MFR_HYNIX, "Hynix"},
143 {NAND_MFR_MICRON, "Micron"},
140 {0x0, "Unknown"} 144 {0x0, "Unknown"}
141}; 145};
142 146
diff --git a/drivers/mtd/nand/nandsim.c b/drivers/mtd/nand/nandsim.c
index c3bca9590ad2..205df0f771fe 100644
--- a/drivers/mtd/nand/nandsim.c
+++ b/drivers/mtd/nand/nandsim.c
@@ -37,6 +37,8 @@
37#include <linux/mtd/nand.h> 37#include <linux/mtd/nand.h>
38#include <linux/mtd/partitions.h> 38#include <linux/mtd/partitions.h>
39#include <linux/delay.h> 39#include <linux/delay.h>
40#include <linux/list.h>
41#include <linux/random.h>
40 42
41/* Default simulator parameters values */ 43/* Default simulator parameters values */
42#if !defined(CONFIG_NANDSIM_FIRST_ID_BYTE) || \ 44#if !defined(CONFIG_NANDSIM_FIRST_ID_BYTE) || \
@@ -90,6 +92,15 @@ static uint bus_width = CONFIG_NANDSIM_BUS_WIDTH;
90static uint do_delays = CONFIG_NANDSIM_DO_DELAYS; 92static uint do_delays = CONFIG_NANDSIM_DO_DELAYS;
91static uint log = CONFIG_NANDSIM_LOG; 93static uint log = CONFIG_NANDSIM_LOG;
92static uint dbg = CONFIG_NANDSIM_DBG; 94static uint dbg = CONFIG_NANDSIM_DBG;
95static unsigned long parts[MAX_MTD_DEVICES];
96static unsigned int parts_num;
97static char *badblocks = NULL;
98static char *weakblocks = NULL;
99static char *weakpages = NULL;
100static unsigned int bitflips = 0;
101static char *gravepages = NULL;
102static unsigned int rptwear = 0;
103static unsigned int overridesize = 0;
93 104
94module_param(first_id_byte, uint, 0400); 105module_param(first_id_byte, uint, 0400);
95module_param(second_id_byte, uint, 0400); 106module_param(second_id_byte, uint, 0400);
@@ -104,8 +115,16 @@ module_param(bus_width, uint, 0400);
104module_param(do_delays, uint, 0400); 115module_param(do_delays, uint, 0400);
105module_param(log, uint, 0400); 116module_param(log, uint, 0400);
106module_param(dbg, uint, 0400); 117module_param(dbg, uint, 0400);
107 118module_param_array(parts, ulong, &parts_num, 0400);
108MODULE_PARM_DESC(first_id_byte, "The fist byte returned by NAND Flash 'read ID' command (manufaturer ID)"); 119module_param(badblocks, charp, 0400);
120module_param(weakblocks, charp, 0400);
121module_param(weakpages, charp, 0400);
122module_param(bitflips, uint, 0400);
123module_param(gravepages, charp, 0400);
124module_param(rptwear, uint, 0400);
125module_param(overridesize, uint, 0400);
126
127MODULE_PARM_DESC(first_id_byte, "The first byte returned by NAND Flash 'read ID' command (manufacturer ID)");
109MODULE_PARM_DESC(second_id_byte, "The second byte returned by NAND Flash 'read ID' command (chip ID)"); 128MODULE_PARM_DESC(second_id_byte, "The second byte returned by NAND Flash 'read ID' command (chip ID)");
110MODULE_PARM_DESC(third_id_byte, "The third byte returned by NAND Flash 'read ID' command"); 129MODULE_PARM_DESC(third_id_byte, "The third byte returned by NAND Flash 'read ID' command");
111MODULE_PARM_DESC(fourth_id_byte, "The fourth byte returned by NAND Flash 'read ID' command"); 130MODULE_PARM_DESC(fourth_id_byte, "The fourth byte returned by NAND Flash 'read ID' command");
@@ -118,6 +137,23 @@ MODULE_PARM_DESC(bus_width, "Chip's bus width (8- or 16-bit)");
118MODULE_PARM_DESC(do_delays, "Simulate NAND delays using busy-waits if not zero"); 137MODULE_PARM_DESC(do_delays, "Simulate NAND delays using busy-waits if not zero");
119MODULE_PARM_DESC(log, "Perform logging if not zero"); 138MODULE_PARM_DESC(log, "Perform logging if not zero");
120MODULE_PARM_DESC(dbg, "Output debug information if not zero"); 139MODULE_PARM_DESC(dbg, "Output debug information if not zero");
140MODULE_PARM_DESC(parts, "Partition sizes (in erase blocks) separated by commas");
141/* Page and erase block positions for the following parameters are independent of any partitions */
142MODULE_PARM_DESC(badblocks, "Erase blocks that are initially marked bad, separated by commas");
143MODULE_PARM_DESC(weakblocks, "Weak erase blocks [: remaining erase cycles (defaults to 3)]"
144 " separated by commas e.g. 113:2 means eb 113"
145 " can be erased only twice before failing");
146MODULE_PARM_DESC(weakpages, "Weak pages [: maximum writes (defaults to 3)]"
147 " separated by commas e.g. 1401:2 means page 1401"
148 " can be written only twice before failing");
149MODULE_PARM_DESC(bitflips, "Maximum number of random bit flips per page (zero by default)");
150MODULE_PARM_DESC(gravepages, "Pages that lose data [: maximum reads (defaults to 3)]"
151 " separated by commas e.g. 1401:2 means page 1401"
152 " can be read only twice before failing");
153MODULE_PARM_DESC(rptwear, "Number of erases inbetween reporting wear, if not zero");
154MODULE_PARM_DESC(overridesize, "Specifies the NAND Flash size overriding the ID bytes. "
155 "The size is specified in erase blocks and as the exponent of a power of two"
156 " e.g. 5 means a size of 32 erase blocks");
121 157
122/* The largest possible page size */ 158/* The largest possible page size */
123#define NS_LARGEST_PAGE_SIZE 2048 159#define NS_LARGEST_PAGE_SIZE 2048
@@ -131,9 +167,11 @@ MODULE_PARM_DESC(dbg, "Output debug information if not zero");
131#define NS_DBG(args...) \ 167#define NS_DBG(args...) \
132 do { if (dbg) printk(KERN_DEBUG NS_OUTPUT_PREFIX " debug: " args); } while(0) 168 do { if (dbg) printk(KERN_DEBUG NS_OUTPUT_PREFIX " debug: " args); } while(0)
133#define NS_WARN(args...) \ 169#define NS_WARN(args...) \
134 do { printk(KERN_WARNING NS_OUTPUT_PREFIX " warnig: " args); } while(0) 170 do { printk(KERN_WARNING NS_OUTPUT_PREFIX " warning: " args); } while(0)
135#define NS_ERR(args...) \ 171#define NS_ERR(args...) \
136 do { printk(KERN_ERR NS_OUTPUT_PREFIX " errorr: " args); } while(0) 172 do { printk(KERN_ERR NS_OUTPUT_PREFIX " error: " args); } while(0)
173#define NS_INFO(args...) \
174 do { printk(KERN_INFO NS_OUTPUT_PREFIX " " args); } while(0)
137 175
138/* Busy-wait delay macros (microseconds, milliseconds) */ 176/* Busy-wait delay macros (microseconds, milliseconds) */
139#define NS_UDELAY(us) \ 177#define NS_UDELAY(us) \
@@ -238,7 +276,8 @@ union ns_mem {
238 * The structure which describes all the internal simulator data. 276 * The structure which describes all the internal simulator data.
239 */ 277 */
240struct nandsim { 278struct nandsim {
241 struct mtd_partition part; 279 struct mtd_partition partitions[MAX_MTD_DEVICES];
280 unsigned int nbparts;
242 281
243 uint busw; /* flash chip bus width (8 or 16) */ 282 uint busw; /* flash chip bus width (8 or 16) */
244 u_char ids[4]; /* chip's ID bytes */ 283 u_char ids[4]; /* chip's ID bytes */
@@ -338,6 +377,38 @@ static struct nandsim_operations {
338 STATE_DATAOUT, STATE_READY}} 377 STATE_DATAOUT, STATE_READY}}
339}; 378};
340 379
380struct weak_block {
381 struct list_head list;
382 unsigned int erase_block_no;
383 unsigned int max_erases;
384 unsigned int erases_done;
385};
386
387static LIST_HEAD(weak_blocks);
388
389struct weak_page {
390 struct list_head list;
391 unsigned int page_no;
392 unsigned int max_writes;
393 unsigned int writes_done;
394};
395
396static LIST_HEAD(weak_pages);
397
398struct grave_page {
399 struct list_head list;
400 unsigned int page_no;
401 unsigned int max_reads;
402 unsigned int reads_done;
403};
404
405static LIST_HEAD(grave_pages);
406
407static unsigned long *erase_block_wear = NULL;
408static unsigned int wear_eb_count = 0;
409static unsigned long total_wear = 0;
410static unsigned int rptwear_cnt = 0;
411
341/* MTD structure for NAND controller */ 412/* MTD structure for NAND controller */
342static struct mtd_info *nsmtd; 413static struct mtd_info *nsmtd;
343 414
@@ -381,6 +452,13 @@ static void free_device(struct nandsim *ns)
381 } 452 }
382} 453}
383 454
455static char *get_partition_name(int i)
456{
457 char buf[64];
458 sprintf(buf, "NAND simulator partition %d", i);
459 return kstrdup(buf, GFP_KERNEL);
460}
461
384/* 462/*
385 * Initialize the nandsim structure. 463 * Initialize the nandsim structure.
386 * 464 *
@@ -390,7 +468,9 @@ static int init_nandsim(struct mtd_info *mtd)
390{ 468{
391 struct nand_chip *chip = (struct nand_chip *)mtd->priv; 469 struct nand_chip *chip = (struct nand_chip *)mtd->priv;
392 struct nandsim *ns = (struct nandsim *)(chip->priv); 470 struct nandsim *ns = (struct nandsim *)(chip->priv);
393 int i; 471 int i, ret = 0;
472 u_int32_t remains;
473 u_int32_t next_offset;
394 474
395 if (NS_IS_INITIALIZED(ns)) { 475 if (NS_IS_INITIALIZED(ns)) {
396 NS_ERR("init_nandsim: nandsim is already initialized\n"); 476 NS_ERR("init_nandsim: nandsim is already initialized\n");
@@ -448,6 +528,40 @@ static int init_nandsim(struct mtd_info *mtd)
448 } 528 }
449 } 529 }
450 530
531 /* Fill the partition_info structure */
532 if (parts_num > ARRAY_SIZE(ns->partitions)) {
533 NS_ERR("too many partitions.\n");
534 ret = -EINVAL;
535 goto error;
536 }
537 remains = ns->geom.totsz;
538 next_offset = 0;
539 for (i = 0; i < parts_num; ++i) {
540 unsigned long part = parts[i];
541 if (!part || part > remains / ns->geom.secsz) {
542 NS_ERR("bad partition size.\n");
543 ret = -EINVAL;
544 goto error;
545 }
546 ns->partitions[i].name = get_partition_name(i);
547 ns->partitions[i].offset = next_offset;
548 ns->partitions[i].size = part * ns->geom.secsz;
549 next_offset += ns->partitions[i].size;
550 remains -= ns->partitions[i].size;
551 }
552 ns->nbparts = parts_num;
553 if (remains) {
554 if (parts_num + 1 > ARRAY_SIZE(ns->partitions)) {
555 NS_ERR("too many partitions.\n");
556 ret = -EINVAL;
557 goto error;
558 }
559 ns->partitions[i].name = get_partition_name(i);
560 ns->partitions[i].offset = next_offset;
561 ns->partitions[i].size = remains;
562 ns->nbparts += 1;
563 }
564
451 /* Detect how many ID bytes the NAND chip outputs */ 565 /* Detect how many ID bytes the NAND chip outputs */
452 for (i = 0; nand_flash_ids[i].name != NULL; i++) { 566 for (i = 0; nand_flash_ids[i].name != NULL; i++) {
453 if (second_id_byte != nand_flash_ids[i].id) 567 if (second_id_byte != nand_flash_ids[i].id)
@@ -474,7 +588,7 @@ static int init_nandsim(struct mtd_info *mtd)
474 printk("sector address bytes: %u\n", ns->geom.secaddrbytes); 588 printk("sector address bytes: %u\n", ns->geom.secaddrbytes);
475 printk("options: %#x\n", ns->options); 589 printk("options: %#x\n", ns->options);
476 590
477 if (alloc_device(ns) != 0) 591 if ((ret = alloc_device(ns)) != 0)
478 goto error; 592 goto error;
479 593
480 /* Allocate / initialize the internal buffer */ 594 /* Allocate / initialize the internal buffer */
@@ -482,21 +596,17 @@ static int init_nandsim(struct mtd_info *mtd)
482 if (!ns->buf.byte) { 596 if (!ns->buf.byte) {
483 NS_ERR("init_nandsim: unable to allocate %u bytes for the internal buffer\n", 597 NS_ERR("init_nandsim: unable to allocate %u bytes for the internal buffer\n",
484 ns->geom.pgszoob); 598 ns->geom.pgszoob);
599 ret = -ENOMEM;
485 goto error; 600 goto error;
486 } 601 }
487 memset(ns->buf.byte, 0xFF, ns->geom.pgszoob); 602 memset(ns->buf.byte, 0xFF, ns->geom.pgszoob);
488 603
489 /* Fill the partition_info structure */
490 ns->part.name = "NAND simulator partition";
491 ns->part.offset = 0;
492 ns->part.size = ns->geom.totsz;
493
494 return 0; 604 return 0;
495 605
496error: 606error:
497 free_device(ns); 607 free_device(ns);
498 608
499 return -ENOMEM; 609 return ret;
500} 610}
501 611
502/* 612/*
@@ -510,6 +620,287 @@ static void free_nandsim(struct nandsim *ns)
510 return; 620 return;
511} 621}
512 622
623static int parse_badblocks(struct nandsim *ns, struct mtd_info *mtd)
624{
625 char *w;
626 int zero_ok;
627 unsigned int erase_block_no;
628 loff_t offset;
629
630 if (!badblocks)
631 return 0;
632 w = badblocks;
633 do {
634 zero_ok = (*w == '0' ? 1 : 0);
635 erase_block_no = simple_strtoul(w, &w, 0);
636 if (!zero_ok && !erase_block_no) {
637 NS_ERR("invalid badblocks.\n");
638 return -EINVAL;
639 }
640 offset = erase_block_no * ns->geom.secsz;
641 if (mtd->block_markbad(mtd, offset)) {
642 NS_ERR("invalid badblocks.\n");
643 return -EINVAL;
644 }
645 if (*w == ',')
646 w += 1;
647 } while (*w);
648 return 0;
649}
650
651static int parse_weakblocks(void)
652{
653 char *w;
654 int zero_ok;
655 unsigned int erase_block_no;
656 unsigned int max_erases;
657 struct weak_block *wb;
658
659 if (!weakblocks)
660 return 0;
661 w = weakblocks;
662 do {
663 zero_ok = (*w == '0' ? 1 : 0);
664 erase_block_no = simple_strtoul(w, &w, 0);
665 if (!zero_ok && !erase_block_no) {
666 NS_ERR("invalid weakblocks.\n");
667 return -EINVAL;
668 }
669 max_erases = 3;
670 if (*w == ':') {
671 w += 1;
672 max_erases = simple_strtoul(w, &w, 0);
673 }
674 if (*w == ',')
675 w += 1;
676 wb = kzalloc(sizeof(*wb), GFP_KERNEL);
677 if (!wb) {
678 NS_ERR("unable to allocate memory.\n");
679 return -ENOMEM;
680 }
681 wb->erase_block_no = erase_block_no;
682 wb->max_erases = max_erases;
683 list_add(&wb->list, &weak_blocks);
684 } while (*w);
685 return 0;
686}
687
688static int erase_error(unsigned int erase_block_no)
689{
690 struct weak_block *wb;
691
692 list_for_each_entry(wb, &weak_blocks, list)
693 if (wb->erase_block_no == erase_block_no) {
694 if (wb->erases_done >= wb->max_erases)
695 return 1;
696 wb->erases_done += 1;
697 return 0;
698 }
699 return 0;
700}
701
702static int parse_weakpages(void)
703{
704 char *w;
705 int zero_ok;
706 unsigned int page_no;
707 unsigned int max_writes;
708 struct weak_page *wp;
709
710 if (!weakpages)
711 return 0;
712 w = weakpages;
713 do {
714 zero_ok = (*w == '0' ? 1 : 0);
715 page_no = simple_strtoul(w, &w, 0);
716 if (!zero_ok && !page_no) {
717 NS_ERR("invalid weakpagess.\n");
718 return -EINVAL;
719 }
720 max_writes = 3;
721 if (*w == ':') {
722 w += 1;
723 max_writes = simple_strtoul(w, &w, 0);
724 }
725 if (*w == ',')
726 w += 1;
727 wp = kzalloc(sizeof(*wp), GFP_KERNEL);
728 if (!wp) {
729 NS_ERR("unable to allocate memory.\n");
730 return -ENOMEM;
731 }
732 wp->page_no = page_no;
733 wp->max_writes = max_writes;
734 list_add(&wp->list, &weak_pages);
735 } while (*w);
736 return 0;
737}
738
739static int write_error(unsigned int page_no)
740{
741 struct weak_page *wp;
742
743 list_for_each_entry(wp, &weak_pages, list)
744 if (wp->page_no == page_no) {
745 if (wp->writes_done >= wp->max_writes)
746 return 1;
747 wp->writes_done += 1;
748 return 0;
749 }
750 return 0;
751}
752
753static int parse_gravepages(void)
754{
755 char *g;
756 int zero_ok;
757 unsigned int page_no;
758 unsigned int max_reads;
759 struct grave_page *gp;
760
761 if (!gravepages)
762 return 0;
763 g = gravepages;
764 do {
765 zero_ok = (*g == '0' ? 1 : 0);
766 page_no = simple_strtoul(g, &g, 0);
767 if (!zero_ok && !page_no) {
768 NS_ERR("invalid gravepagess.\n");
769 return -EINVAL;
770 }
771 max_reads = 3;
772 if (*g == ':') {
773 g += 1;
774 max_reads = simple_strtoul(g, &g, 0);
775 }
776 if (*g == ',')
777 g += 1;
778 gp = kzalloc(sizeof(*gp), GFP_KERNEL);
779 if (!gp) {
780 NS_ERR("unable to allocate memory.\n");
781 return -ENOMEM;
782 }
783 gp->page_no = page_no;
784 gp->max_reads = max_reads;
785 list_add(&gp->list, &grave_pages);
786 } while (*g);
787 return 0;
788}
789
790static int read_error(unsigned int page_no)
791{
792 struct grave_page *gp;
793
794 list_for_each_entry(gp, &grave_pages, list)
795 if (gp->page_no == page_no) {
796 if (gp->reads_done >= gp->max_reads)
797 return 1;
798 gp->reads_done += 1;
799 return 0;
800 }
801 return 0;
802}
803
804static void free_lists(void)
805{
806 struct list_head *pos, *n;
807 list_for_each_safe(pos, n, &weak_blocks) {
808 list_del(pos);
809 kfree(list_entry(pos, struct weak_block, list));
810 }
811 list_for_each_safe(pos, n, &weak_pages) {
812 list_del(pos);
813 kfree(list_entry(pos, struct weak_page, list));
814 }
815 list_for_each_safe(pos, n, &grave_pages) {
816 list_del(pos);
817 kfree(list_entry(pos, struct grave_page, list));
818 }
819 kfree(erase_block_wear);
820}
821
822static int setup_wear_reporting(struct mtd_info *mtd)
823{
824 size_t mem;
825
826 if (!rptwear)
827 return 0;
828 wear_eb_count = mtd->size / mtd->erasesize;
829 mem = wear_eb_count * sizeof(unsigned long);
830 if (mem / sizeof(unsigned long) != wear_eb_count) {
831 NS_ERR("Too many erase blocks for wear reporting\n");
832 return -ENOMEM;
833 }
834 erase_block_wear = kzalloc(mem, GFP_KERNEL);
835 if (!erase_block_wear) {
836 NS_ERR("Too many erase blocks for wear reporting\n");
837 return -ENOMEM;
838 }
839 return 0;
840}
841
842static void update_wear(unsigned int erase_block_no)
843{
844 unsigned long wmin = -1, wmax = 0, avg;
845 unsigned long deciles[10], decile_max[10], tot = 0;
846 unsigned int i;
847
848 if (!erase_block_wear)
849 return;
850 total_wear += 1;
851 if (total_wear == 0)
852 NS_ERR("Erase counter total overflow\n");
853 erase_block_wear[erase_block_no] += 1;
854 if (erase_block_wear[erase_block_no] == 0)
855 NS_ERR("Erase counter overflow for erase block %u\n", erase_block_no);
856 rptwear_cnt += 1;
857 if (rptwear_cnt < rptwear)
858 return;
859 rptwear_cnt = 0;
860 /* Calc wear stats */
861 for (i = 0; i < wear_eb_count; ++i) {
862 unsigned long wear = erase_block_wear[i];
863 if (wear < wmin)
864 wmin = wear;
865 if (wear > wmax)
866 wmax = wear;
867 tot += wear;
868 }
869 for (i = 0; i < 9; ++i) {
870 deciles[i] = 0;
871 decile_max[i] = (wmax * (i + 1) + 5) / 10;
872 }
873 deciles[9] = 0;
874 decile_max[9] = wmax;
875 for (i = 0; i < wear_eb_count; ++i) {
876 int d;
877 unsigned long wear = erase_block_wear[i];
878 for (d = 0; d < 10; ++d)
879 if (wear <= decile_max[d]) {
880 deciles[d] += 1;
881 break;
882 }
883 }
884 avg = tot / wear_eb_count;
885 /* Output wear report */
886 NS_INFO("*** Wear Report ***\n");
887 NS_INFO("Total numbers of erases: %lu\n", tot);
888 NS_INFO("Number of erase blocks: %u\n", wear_eb_count);
889 NS_INFO("Average number of erases: %lu\n", avg);
890 NS_INFO("Maximum number of erases: %lu\n", wmax);
891 NS_INFO("Minimum number of erases: %lu\n", wmin);
892 for (i = 0; i < 10; ++i) {
893 unsigned long from = (i ? decile_max[i - 1] + 1 : 0);
894 if (from > decile_max[i])
895 continue;
896 NS_INFO("Number of ebs with erase counts from %lu to %lu : %lu\n",
897 from,
898 decile_max[i],
899 deciles[i]);
900 }
901 NS_INFO("*** End of Wear Report ***\n");
902}
903
513/* 904/*
514 * Returns the string representation of 'state' state. 905 * Returns the string representation of 'state' state.
515 */ 906 */
@@ -822,9 +1213,31 @@ static void read_page(struct nandsim *ns, int num)
822 NS_DBG("read_page: page %d not allocated\n", ns->regs.row); 1213 NS_DBG("read_page: page %d not allocated\n", ns->regs.row);
823 memset(ns->buf.byte, 0xFF, num); 1214 memset(ns->buf.byte, 0xFF, num);
824 } else { 1215 } else {
1216 unsigned int page_no = ns->regs.row;
825 NS_DBG("read_page: page %d allocated, reading from %d\n", 1217 NS_DBG("read_page: page %d allocated, reading from %d\n",
826 ns->regs.row, ns->regs.column + ns->regs.off); 1218 ns->regs.row, ns->regs.column + ns->regs.off);
1219 if (read_error(page_no)) {
1220 int i;
1221 memset(ns->buf.byte, 0xFF, num);
1222 for (i = 0; i < num; ++i)
1223 ns->buf.byte[i] = random32();
1224 NS_WARN("simulating read error in page %u\n", page_no);
1225 return;
1226 }
827 memcpy(ns->buf.byte, NS_PAGE_BYTE_OFF(ns), num); 1227 memcpy(ns->buf.byte, NS_PAGE_BYTE_OFF(ns), num);
1228 if (bitflips && random32() < (1 << 22)) {
1229 int flips = 1;
1230 if (bitflips > 1)
1231 flips = (random32() % (int) bitflips) + 1;
1232 while (flips--) {
1233 int pos = random32() % (num * 8);
1234 ns->buf.byte[pos / 8] ^= (1 << (pos % 8));
1235 NS_WARN("read_page: flipping bit %d in page %d "
1236 "reading from %d ecc: corrected=%u failed=%u\n",
1237 pos, ns->regs.row, ns->regs.column + ns->regs.off,
1238 nsmtd->ecc_stats.corrected, nsmtd->ecc_stats.failed);
1239 }
1240 }
828 } 1241 }
829} 1242}
830 1243
@@ -883,6 +1296,7 @@ static int do_state_action(struct nandsim *ns, uint32_t action)
883{ 1296{
884 int num; 1297 int num;
885 int busdiv = ns->busw == 8 ? 1 : 2; 1298 int busdiv = ns->busw == 8 ? 1 : 2;
1299 unsigned int erase_block_no, page_no;
886 1300
887 action &= ACTION_MASK; 1301 action &= ACTION_MASK;
888 1302
@@ -942,14 +1356,24 @@ static int do_state_action(struct nandsim *ns, uint32_t action)
942 8 * (ns->geom.pgaddrbytes - ns->geom.secaddrbytes)) | ns->regs.column; 1356 8 * (ns->geom.pgaddrbytes - ns->geom.secaddrbytes)) | ns->regs.column;
943 ns->regs.column = 0; 1357 ns->regs.column = 0;
944 1358
1359 erase_block_no = ns->regs.row >> (ns->geom.secshift - ns->geom.pgshift);
1360
945 NS_DBG("do_state_action: erase sector at address %#x, off = %d\n", 1361 NS_DBG("do_state_action: erase sector at address %#x, off = %d\n",
946 ns->regs.row, NS_RAW_OFFSET(ns)); 1362 ns->regs.row, NS_RAW_OFFSET(ns));
947 NS_LOG("erase sector %d\n", ns->regs.row >> (ns->geom.secshift - ns->geom.pgshift)); 1363 NS_LOG("erase sector %u\n", erase_block_no);
948 1364
949 erase_sector(ns); 1365 erase_sector(ns);
950 1366
951 NS_MDELAY(erase_delay); 1367 NS_MDELAY(erase_delay);
952 1368
1369 if (erase_block_wear)
1370 update_wear(erase_block_no);
1371
1372 if (erase_error(erase_block_no)) {
1373 NS_WARN("simulating erase failure in erase block %u\n", erase_block_no);
1374 return -1;
1375 }
1376
953 break; 1377 break;
954 1378
955 case ACTION_PRGPAGE: 1379 case ACTION_PRGPAGE:
@@ -972,6 +1396,8 @@ static int do_state_action(struct nandsim *ns, uint32_t action)
972 if (prog_page(ns, num) == -1) 1396 if (prog_page(ns, num) == -1)
973 return -1; 1397 return -1;
974 1398
1399 page_no = ns->regs.row;
1400
975 NS_DBG("do_state_action: copy %d bytes from int buf to (%#x, %#x), raw off = %d\n", 1401 NS_DBG("do_state_action: copy %d bytes from int buf to (%#x, %#x), raw off = %d\n",
976 num, ns->regs.row, ns->regs.column, NS_RAW_OFFSET(ns) + ns->regs.off); 1402 num, ns->regs.row, ns->regs.column, NS_RAW_OFFSET(ns) + ns->regs.off);
977 NS_LOG("programm page %d\n", ns->regs.row); 1403 NS_LOG("programm page %d\n", ns->regs.row);
@@ -979,6 +1405,11 @@ static int do_state_action(struct nandsim *ns, uint32_t action)
979 NS_UDELAY(programm_delay); 1405 NS_UDELAY(programm_delay);
980 NS_UDELAY(output_cycle * ns->geom.pgsz / 1000 / busdiv); 1406 NS_UDELAY(output_cycle * ns->geom.pgsz / 1000 / busdiv);
981 1407
1408 if (write_error(page_no)) {
1409 NS_WARN("simulating write failure in page %u\n", page_no);
1410 return -1;
1411 }
1412
982 break; 1413 break;
983 1414
984 case ACTION_ZEROOFF: 1415 case ACTION_ZEROOFF:
@@ -1503,7 +1934,7 @@ static int __init ns_init_module(void)
1503{ 1934{
1504 struct nand_chip *chip; 1935 struct nand_chip *chip;
1505 struct nandsim *nand; 1936 struct nandsim *nand;
1506 int retval = -ENOMEM; 1937 int retval = -ENOMEM, i;
1507 1938
1508 if (bus_width != 8 && bus_width != 16) { 1939 if (bus_width != 8 && bus_width != 16) {
1509 NS_ERR("wrong bus width (%d), use only 8 or 16\n", bus_width); 1940 NS_ERR("wrong bus width (%d), use only 8 or 16\n", bus_width);
@@ -1533,6 +1964,8 @@ static int __init ns_init_module(void)
1533 chip->verify_buf = ns_nand_verify_buf; 1964 chip->verify_buf = ns_nand_verify_buf;
1534 chip->read_word = ns_nand_read_word; 1965 chip->read_word = ns_nand_read_word;
1535 chip->ecc.mode = NAND_ECC_SOFT; 1966 chip->ecc.mode = NAND_ECC_SOFT;
1967 /* The NAND_SKIP_BBTSCAN option is necessary for 'overridesize' */
1968 /* and 'badblocks' parameters to work */
1536 chip->options |= NAND_SKIP_BBTSCAN; 1969 chip->options |= NAND_SKIP_BBTSCAN;
1537 1970
1538 /* 1971 /*
@@ -1557,6 +1990,15 @@ static int __init ns_init_module(void)
1557 1990
1558 nsmtd->owner = THIS_MODULE; 1991 nsmtd->owner = THIS_MODULE;
1559 1992
1993 if ((retval = parse_weakblocks()) != 0)
1994 goto error;
1995
1996 if ((retval = parse_weakpages()) != 0)
1997 goto error;
1998
1999 if ((retval = parse_gravepages()) != 0)
2000 goto error;
2001
1560 if ((retval = nand_scan(nsmtd, 1)) != 0) { 2002 if ((retval = nand_scan(nsmtd, 1)) != 0) {
1561 NS_ERR("can't register NAND Simulator\n"); 2003 NS_ERR("can't register NAND Simulator\n");
1562 if (retval > 0) 2004 if (retval > 0)
@@ -1564,23 +2006,44 @@ static int __init ns_init_module(void)
1564 goto error; 2006 goto error;
1565 } 2007 }
1566 2008
1567 if ((retval = init_nandsim(nsmtd)) != 0) { 2009 if (overridesize) {
1568 NS_ERR("scan_bbt: can't initialize the nandsim structure\n"); 2010 u_int32_t new_size = nsmtd->erasesize << overridesize;
1569 goto error; 2011 if (new_size >> overridesize != nsmtd->erasesize) {
2012 NS_ERR("overridesize is too big\n");
2013 goto err_exit;
2014 }
2015 /* N.B. This relies on nand_scan not doing anything with the size before we change it */
2016 nsmtd->size = new_size;
2017 chip->chipsize = new_size;
2018 chip->chip_shift = ffs(new_size) - 1;
1570 } 2019 }
1571 2020
1572 if ((retval = nand_default_bbt(nsmtd)) != 0) { 2021 if ((retval = setup_wear_reporting(nsmtd)) != 0)
1573 free_nandsim(nand); 2022 goto err_exit;
1574 goto error; 2023
1575 } 2024 if ((retval = init_nandsim(nsmtd)) != 0)
2025 goto err_exit;
1576 2026
1577 /* Register NAND as one big partition */ 2027 if ((retval = parse_badblocks(nand, nsmtd)) != 0)
1578 add_mtd_partitions(nsmtd, &nand->part, 1); 2028 goto err_exit;
2029
2030 if ((retval = nand_default_bbt(nsmtd)) != 0)
2031 goto err_exit;
2032
2033 /* Register NAND partitions */
2034 if ((retval = add_mtd_partitions(nsmtd, &nand->partitions[0], nand->nbparts)) != 0)
2035 goto err_exit;
1579 2036
1580 return 0; 2037 return 0;
1581 2038
2039err_exit:
2040 free_nandsim(nand);
2041 nand_release(nsmtd);
2042 for (i = 0;i < ARRAY_SIZE(nand->partitions); ++i)
2043 kfree(nand->partitions[i].name);
1582error: 2044error:
1583 kfree(nsmtd); 2045 kfree(nsmtd);
2046 free_lists();
1584 2047
1585 return retval; 2048 return retval;
1586} 2049}
@@ -1593,10 +2056,14 @@ module_init(ns_init_module);
1593static void __exit ns_cleanup_module(void) 2056static void __exit ns_cleanup_module(void)
1594{ 2057{
1595 struct nandsim *ns = (struct nandsim *)(((struct nand_chip *)nsmtd->priv)->priv); 2058 struct nandsim *ns = (struct nandsim *)(((struct nand_chip *)nsmtd->priv)->priv);
2059 int i;
1596 2060
1597 free_nandsim(ns); /* Free nandsim private resources */ 2061 free_nandsim(ns); /* Free nandsim private resources */
1598 nand_release(nsmtd); /* Unregisterd drived */ 2062 nand_release(nsmtd); /* Unregister driver */
2063 for (i = 0;i < ARRAY_SIZE(ns->partitions); ++i)
2064 kfree(ns->partitions[i].name);
1599 kfree(nsmtd); /* Free other structures */ 2065 kfree(nsmtd); /* Free other structures */
2066 free_lists();
1600} 2067}
1601 2068
1602module_exit(ns_cleanup_module); 2069module_exit(ns_cleanup_module);
@@ -1604,4 +2071,3 @@ module_exit(ns_cleanup_module);
1604MODULE_LICENSE ("GPL"); 2071MODULE_LICENSE ("GPL");
1605MODULE_AUTHOR ("Artem B. Bityuckiy"); 2072MODULE_AUTHOR ("Artem B. Bityuckiy");
1606MODULE_DESCRIPTION ("The NAND flash simulator"); 2073MODULE_DESCRIPTION ("The NAND flash simulator");
1607
diff --git a/drivers/mtd/onenand/Kconfig b/drivers/mtd/onenand/Kconfig
index 373bddce8f1c..c257d397d08a 100644
--- a/drivers/mtd/onenand/Kconfig
+++ b/drivers/mtd/onenand/Kconfig
@@ -2,20 +2,18 @@
2# linux/drivers/mtd/onenand/Kconfig 2# linux/drivers/mtd/onenand/Kconfig
3# 3#
4 4
5menu "OneNAND Flash Device Drivers" 5menuconfig MTD_ONENAND
6 depends on MTD != n
7
8config MTD_ONENAND
9 tristate "OneNAND Device Support" 6 tristate "OneNAND Device Support"
10 depends on MTD 7 depends on MTD
11 help 8 help
12 This enables support for accessing all type of OneNAND flash 9 This enables support for accessing all type of OneNAND flash
13 devices. For further information see 10 devices. For further information see
14 <http://www.samsung.com/Products/Semiconductor/Flash/OneNAND_TM/index.htm>. 11 <http://www.samsung.com/Products/Semiconductor/OneNAND/index.htm>
12
13if MTD_ONENAND
15 14
16config MTD_ONENAND_VERIFY_WRITE 15config MTD_ONENAND_VERIFY_WRITE
17 bool "Verify OneNAND page writes" 16 bool "Verify OneNAND page writes"
18 depends on MTD_ONENAND
19 help 17 help
20 This adds an extra check when data is written to the flash. The 18 This adds an extra check when data is written to the flash. The
21 OneNAND flash device internally checks only bits transitioning 19 OneNAND flash device internally checks only bits transitioning
@@ -25,13 +23,12 @@ config MTD_ONENAND_VERIFY_WRITE
25 23
26config MTD_ONENAND_GENERIC 24config MTD_ONENAND_GENERIC
27 tristate "OneNAND Flash device via platform device driver" 25 tristate "OneNAND Flash device via platform device driver"
28 depends on MTD_ONENAND && ARM 26 depends on ARM
29 help 27 help
30 Support for OneNAND flash via platform device driver. 28 Support for OneNAND flash via platform device driver.
31 29
32config MTD_ONENAND_OTP 30config MTD_ONENAND_OTP
33 bool "OneNAND OTP Support" 31 bool "OneNAND OTP Support"
34 depends on MTD_ONENAND
35 help 32 help
36 One Block of the NAND Flash Array memory is reserved as 33 One Block of the NAND Flash Array memory is reserved as
37 a One-Time Programmable Block memory area. 34 a One-Time Programmable Block memory area.
@@ -43,4 +40,4 @@ config MTD_ONENAND_OTP
43 40
44 OTP block is fully-guaranteed to be a valid block. 41 OTP block is fully-guaranteed to be a valid block.
45 42
46endmenu 43endif # MTD_ONENAND
diff --git a/drivers/mtd/onenand/onenand_base.c b/drivers/mtd/onenand/onenand_base.c
index 9e14a26ca4e8..000794c6caf5 100644
--- a/drivers/mtd/onenand/onenand_base.c
+++ b/drivers/mtd/onenand/onenand_base.c
@@ -836,9 +836,11 @@ static int onenand_transfer_auto_oob(struct mtd_info *mtd, uint8_t *buf, int col
836 int readcol = column; 836 int readcol = column;
837 int readend = column + thislen; 837 int readend = column + thislen;
838 int lastgap = 0; 838 int lastgap = 0;
839 unsigned int i;
839 uint8_t *oob_buf = this->oob_buf; 840 uint8_t *oob_buf = this->oob_buf;
840 841
841 for (free = this->ecclayout->oobfree; free->length; ++free) { 842 free = this->ecclayout->oobfree;
843 for (i = 0; i < MTD_MAX_OOBFREE_ENTRIES && free->length; i++, free++) {
842 if (readcol >= lastgap) 844 if (readcol >= lastgap)
843 readcol += free->offset - lastgap; 845 readcol += free->offset - lastgap;
844 if (readend >= lastgap) 846 if (readend >= lastgap)
@@ -846,7 +848,8 @@ static int onenand_transfer_auto_oob(struct mtd_info *mtd, uint8_t *buf, int col
846 lastgap = free->offset + free->length; 848 lastgap = free->offset + free->length;
847 } 849 }
848 this->read_bufferram(mtd, ONENAND_SPARERAM, oob_buf, 0, mtd->oobsize); 850 this->read_bufferram(mtd, ONENAND_SPARERAM, oob_buf, 0, mtd->oobsize);
849 for (free = this->ecclayout->oobfree; free->length; ++free) { 851 free = this->ecclayout->oobfree;
852 for (i = 0; i < MTD_MAX_OOBFREE_ENTRIES && free->length; i++, free++) {
850 int free_end = free->offset + free->length; 853 int free_end = free->offset + free->length;
851 if (free->offset < readend && free_end > readcol) { 854 if (free->offset < readend && free_end > readcol) {
852 int st = max_t(int,free->offset,readcol); 855 int st = max_t(int,free->offset,readcol);
@@ -854,7 +857,7 @@ static int onenand_transfer_auto_oob(struct mtd_info *mtd, uint8_t *buf, int col
854 int n = ed - st; 857 int n = ed - st;
855 memcpy(buf, oob_buf + st, n); 858 memcpy(buf, oob_buf + st, n);
856 buf += n; 859 buf += n;
857 } else 860 } else if (column == 0)
858 break; 861 break;
859 } 862 }
860 return 0; 863 return 0;
@@ -1280,15 +1283,18 @@ static int onenand_fill_auto_oob(struct mtd_info *mtd, u_char *oob_buf,
1280 int writecol = column; 1283 int writecol = column;
1281 int writeend = column + thislen; 1284 int writeend = column + thislen;
1282 int lastgap = 0; 1285 int lastgap = 0;
1286 unsigned int i;
1283 1287
1284 for (free = this->ecclayout->oobfree; free->length; ++free) { 1288 free = this->ecclayout->oobfree;
1289 for (i = 0; i < MTD_MAX_OOBFREE_ENTRIES && free->length; i++, free++) {
1285 if (writecol >= lastgap) 1290 if (writecol >= lastgap)
1286 writecol += free->offset - lastgap; 1291 writecol += free->offset - lastgap;
1287 if (writeend >= lastgap) 1292 if (writeend >= lastgap)
1288 writeend += free->offset - lastgap; 1293 writeend += free->offset - lastgap;
1289 lastgap = free->offset + free->length; 1294 lastgap = free->offset + free->length;
1290 } 1295 }
1291 for (free = this->ecclayout->oobfree; free->length; ++free) { 1296 free = this->ecclayout->oobfree;
1297 for (i = 0; i < MTD_MAX_OOBFREE_ENTRIES && free->length; i++, free++) {
1292 int free_end = free->offset + free->length; 1298 int free_end = free->offset + free->length;
1293 if (free->offset < writeend && free_end > writecol) { 1299 if (free->offset < writeend && free_end > writecol) {
1294 int st = max_t(int,free->offset,writecol); 1300 int st = max_t(int,free->offset,writecol);
@@ -1296,7 +1302,7 @@ static int onenand_fill_auto_oob(struct mtd_info *mtd, u_char *oob_buf,
1296 int n = ed - st; 1302 int n = ed - st;
1297 memcpy(oob_buf + st, buf, n); 1303 memcpy(oob_buf + st, buf, n);
1298 buf += n; 1304 buf += n;
1299 } else 1305 } else if (column == 0)
1300 break; 1306 break;
1301 } 1307 }
1302 return 0; 1308 return 0;
@@ -2386,7 +2392,8 @@ int onenand_scan(struct mtd_info *mtd, int maxchips)
2386 * the out of band area 2392 * the out of band area
2387 */ 2393 */
2388 this->ecclayout->oobavail = 0; 2394 this->ecclayout->oobavail = 0;
2389 for (i = 0; this->ecclayout->oobfree[i].length; i++) 2395 for (i = 0; i < MTD_MAX_OOBFREE_ENTRIES &&
2396 this->ecclayout->oobfree[i].length; i++)
2390 this->ecclayout->oobavail += 2397 this->ecclayout->oobavail +=
2391 this->ecclayout->oobfree[i].length; 2398 this->ecclayout->oobfree[i].length;
2392 mtd->oobavail = this->ecclayout->oobavail; 2399 mtd->oobavail = this->ecclayout->oobavail;
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-22 16:34:03 -0500