diff options
author | David Woodhouse <dwmw2@infradead.org> | 2006-05-13 13:07:53 -0400 |
---|---|---|
committer | David Woodhouse <dwmw2@infradead.org> | 2006-05-13 13:07:53 -0400 |
commit | e0c7d7675331140e5186d2d1a0efce1d3877d379 (patch) | |
tree | 45247eb5029382c64392aa641e8b0e5506ed152f /drivers/mtd/nand/nand_bbt.c | |
parent | 6943f8af7d6583be57d67bba8b2644371f6a10ca (diff) |
[MTD NAND] Indent all of drivers/mtd/nand/*.c.
It was just too painful to deal with.
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Diffstat (limited to 'drivers/mtd/nand/nand_bbt.c')
-rw-r--r-- | drivers/mtd/nand/nand_bbt.c | 263 |
1 files changed, 131 insertions, 132 deletions
diff --git a/drivers/mtd/nand/nand_bbt.c b/drivers/mtd/nand/nand_bbt.c index ccc48a4a6ad0..9adc6d62332a 100644 --- a/drivers/mtd/nand/nand_bbt.c +++ b/drivers/mtd/nand/nand_bbt.c | |||
@@ -48,7 +48,7 @@ | |||
48 | * | 48 | * |
49 | * Following assumptions are made: | 49 | * Following assumptions are made: |
50 | * - bbts start at a page boundary, if autolocated on a block boundary | 50 | * - bbts start at a page boundary, if autolocated on a block boundary |
51 | * - the space neccecary for a bbt in FLASH does not exceed a block boundary | 51 | * - the space necessary for a bbt in FLASH does not exceed a block boundary |
52 | * | 52 | * |
53 | */ | 53 | */ |
54 | 54 | ||
@@ -75,7 +75,7 @@ | |||
75 | * pattern area contain 0xff | 75 | * pattern area contain 0xff |
76 | * | 76 | * |
77 | */ | 77 | */ |
78 | static int check_pattern (uint8_t *buf, int len, int paglen, struct nand_bbt_descr *td) | 78 | static int check_pattern(uint8_t *buf, int len, int paglen, struct nand_bbt_descr *td) |
79 | { | 79 | { |
80 | int i, end = 0; | 80 | int i, end = 0; |
81 | uint8_t *p = buf; | 81 | uint8_t *p = buf; |
@@ -116,7 +116,7 @@ static int check_pattern (uint8_t *buf, int len, int paglen, struct nand_bbt_des | |||
116 | * no optional empty check | 116 | * no optional empty check |
117 | * | 117 | * |
118 | */ | 118 | */ |
119 | static int check_short_pattern (uint8_t *buf, struct nand_bbt_descr *td) | 119 | static int check_short_pattern(uint8_t *buf, struct nand_bbt_descr *td) |
120 | { | 120 | { |
121 | int i; | 121 | int i; |
122 | uint8_t *p = buf; | 122 | uint8_t *p = buf; |
@@ -142,8 +142,8 @@ static int check_short_pattern (uint8_t *buf, struct nand_bbt_descr *td) | |||
142 | * Read the bad block table starting from page. | 142 | * Read the bad block table starting from page. |
143 | * | 143 | * |
144 | */ | 144 | */ |
145 | static int read_bbt (struct mtd_info *mtd, uint8_t *buf, int page, int num, | 145 | static int read_bbt(struct mtd_info *mtd, uint8_t *buf, int page, int num, |
146 | int bits, int offs, int reserved_block_code) | 146 | int bits, int offs, int reserved_block_code) |
147 | { | 147 | { |
148 | int res, i, j, act = 0; | 148 | int res, i, j, act = 0; |
149 | struct nand_chip *this = mtd->priv; | 149 | struct nand_chip *this = mtd->priv; |
@@ -152,17 +152,17 @@ static int read_bbt (struct mtd_info *mtd, uint8_t *buf, int page, int num, | |||
152 | uint8_t msk = (uint8_t) ((1 << bits) - 1); | 152 | uint8_t msk = (uint8_t) ((1 << bits) - 1); |
153 | 153 | ||
154 | totlen = (num * bits) >> 3; | 154 | totlen = (num * bits) >> 3; |
155 | from = ((loff_t)page) << this->page_shift; | 155 | from = ((loff_t) page) << this->page_shift; |
156 | 156 | ||
157 | while (totlen) { | 157 | while (totlen) { |
158 | len = min (totlen, (size_t) (1 << this->bbt_erase_shift)); | 158 | len = min(totlen, (size_t) (1 << this->bbt_erase_shift)); |
159 | res = mtd->read_ecc (mtd, from, len, &retlen, buf, NULL, this->autooob); | 159 | res = mtd->read_ecc(mtd, from, len, &retlen, buf, NULL, this->autooob); |
160 | if (res < 0) { | 160 | if (res < 0) { |
161 | if (retlen != len) { | 161 | if (retlen != len) { |
162 | printk (KERN_INFO "nand_bbt: Error reading bad block table\n"); | 162 | printk(KERN_INFO "nand_bbt: Error reading bad block table\n"); |
163 | return res; | 163 | return res; |
164 | } | 164 | } |
165 | printk (KERN_WARNING "nand_bbt: ECC error while reading bad block table\n"); | 165 | printk(KERN_WARNING "nand_bbt: ECC error while reading bad block table\n"); |
166 | } | 166 | } |
167 | 167 | ||
168 | /* Analyse data */ | 168 | /* Analyse data */ |
@@ -172,17 +172,16 @@ static int read_bbt (struct mtd_info *mtd, uint8_t *buf, int page, int num, | |||
172 | uint8_t tmp = (dat >> j) & msk; | 172 | uint8_t tmp = (dat >> j) & msk; |
173 | if (tmp == msk) | 173 | if (tmp == msk) |
174 | continue; | 174 | continue; |
175 | if (reserved_block_code && | 175 | if (reserved_block_code && (tmp == reserved_block_code)) { |
176 | (tmp == reserved_block_code)) { | 176 | printk(KERN_DEBUG "nand_read_bbt: Reserved block at 0x%08x\n", |
177 | printk (KERN_DEBUG "nand_read_bbt: Reserved block at 0x%08x\n", | 177 | ((offs << 2) + (act >> 1)) << this->bbt_erase_shift); |
178 | ((offs << 2) + (act >> 1)) << this->bbt_erase_shift); | ||
179 | this->bbt[offs + (act >> 3)] |= 0x2 << (act & 0x06); | 178 | this->bbt[offs + (act >> 3)] |= 0x2 << (act & 0x06); |
180 | continue; | 179 | continue; |
181 | } | 180 | } |
182 | /* Leave it for now, if its matured we can move this | 181 | /* Leave it for now, if its matured we can move this |
183 | * message to MTD_DEBUG_LEVEL0 */ | 182 | * message to MTD_DEBUG_LEVEL0 */ |
184 | printk (KERN_DEBUG "nand_read_bbt: Bad block at 0x%08x\n", | 183 | printk(KERN_DEBUG "nand_read_bbt: Bad block at 0x%08x\n", |
185 | ((offs << 2) + (act >> 1)) << this->bbt_erase_shift); | 184 | ((offs << 2) + (act >> 1)) << this->bbt_erase_shift); |
186 | /* Factory marked bad or worn out ? */ | 185 | /* Factory marked bad or worn out ? */ |
187 | if (tmp == 0) | 186 | if (tmp == 0) |
188 | this->bbt[offs + (act >> 3)] |= 0x3 << (act & 0x06); | 187 | this->bbt[offs + (act >> 3)] |= 0x3 << (act & 0x06); |
@@ -207,7 +206,7 @@ static int read_bbt (struct mtd_info *mtd, uint8_t *buf, int page, int num, | |||
207 | * Read the bad block table for all chips starting at a given page | 206 | * Read the bad block table for all chips starting at a given page |
208 | * We assume that the bbt bits are in consecutive order. | 207 | * We assume that the bbt bits are in consecutive order. |
209 | */ | 208 | */ |
210 | static int read_abs_bbt (struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr *td, int chip) | 209 | static int read_abs_bbt(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr *td, int chip) |
211 | { | 210 | { |
212 | struct nand_chip *this = mtd->priv; | 211 | struct nand_chip *this = mtd->priv; |
213 | int res = 0, i; | 212 | int res = 0, i; |
@@ -242,23 +241,22 @@ static int read_abs_bbt (struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_des | |||
242 | * We assume that the bbt bits are in consecutive order. | 241 | * We assume that the bbt bits are in consecutive order. |
243 | * | 242 | * |
244 | */ | 243 | */ |
245 | static int read_abs_bbts (struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr *td, | 244 | static int read_abs_bbts(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr *td, struct nand_bbt_descr *md) |
246 | struct nand_bbt_descr *md) | ||
247 | { | 245 | { |
248 | struct nand_chip *this = mtd->priv; | 246 | struct nand_chip *this = mtd->priv; |
249 | 247 | ||
250 | /* Read the primary version, if available */ | 248 | /* Read the primary version, if available */ |
251 | if (td->options & NAND_BBT_VERSION) { | 249 | if (td->options & NAND_BBT_VERSION) { |
252 | nand_read_raw (mtd, buf, td->pages[0] << this->page_shift, mtd->oobblock, mtd->oobsize); | 250 | nand_read_raw(mtd, buf, td->pages[0] << this->page_shift, mtd->oobblock, mtd->oobsize); |
253 | td->version[0] = buf[mtd->oobblock + td->veroffs]; | 251 | td->version[0] = buf[mtd->oobblock + td->veroffs]; |
254 | printk (KERN_DEBUG "Bad block table at page %d, version 0x%02X\n", td->pages[0], td->version[0]); | 252 | printk(KERN_DEBUG "Bad block table at page %d, version 0x%02X\n", td->pages[0], td->version[0]); |
255 | } | 253 | } |
256 | 254 | ||
257 | /* Read the mirror version, if available */ | 255 | /* Read the mirror version, if available */ |
258 | if (md && (md->options & NAND_BBT_VERSION)) { | 256 | if (md && (md->options & NAND_BBT_VERSION)) { |
259 | nand_read_raw (mtd, buf, md->pages[0] << this->page_shift, mtd->oobblock, mtd->oobsize); | 257 | nand_read_raw(mtd, buf, md->pages[0] << this->page_shift, mtd->oobblock, mtd->oobsize); |
260 | md->version[0] = buf[mtd->oobblock + md->veroffs]; | 258 | md->version[0] = buf[mtd->oobblock + md->veroffs]; |
261 | printk (KERN_DEBUG "Bad block table at page %d, version 0x%02X\n", md->pages[0], md->version[0]); | 259 | printk(KERN_DEBUG "Bad block table at page %d, version 0x%02X\n", md->pages[0], md->version[0]); |
262 | } | 260 | } |
263 | 261 | ||
264 | return 1; | 262 | return 1; |
@@ -275,7 +273,7 @@ static int read_abs_bbts (struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_de | |||
275 | * Create a bad block table by scanning the device | 273 | * Create a bad block table by scanning the device |
276 | * for the given good/bad block identify pattern | 274 | * for the given good/bad block identify pattern |
277 | */ | 275 | */ |
278 | static int create_bbt (struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr *bd, int chip) | 276 | static int create_bbt(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr *bd, int chip) |
279 | { | 277 | { |
280 | struct nand_chip *this = mtd->priv; | 278 | struct nand_chip *this = mtd->priv; |
281 | int i, j, numblocks, len, scanlen; | 279 | int i, j, numblocks, len, scanlen; |
@@ -283,7 +281,7 @@ static int create_bbt (struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr | |||
283 | loff_t from; | 281 | loff_t from; |
284 | size_t readlen, ooblen; | 282 | size_t readlen, ooblen; |
285 | 283 | ||
286 | printk (KERN_INFO "Scanning device for bad blocks\n"); | 284 | printk(KERN_INFO "Scanning device for bad blocks\n"); |
287 | 285 | ||
288 | if (bd->options & NAND_BBT_SCANALLPAGES) | 286 | if (bd->options & NAND_BBT_SCANALLPAGES) |
289 | len = 1 << (this->bbt_erase_shift - this->page_shift); | 287 | len = 1 << (this->bbt_erase_shift - this->page_shift); |
@@ -300,7 +298,7 @@ static int create_bbt (struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr | |||
300 | readlen = bd->len; | 298 | readlen = bd->len; |
301 | } else { | 299 | } else { |
302 | /* Full page content should be read */ | 300 | /* Full page content should be read */ |
303 | scanlen = mtd->oobblock + mtd->oobsize; | 301 | scanlen = mtd->oobblock + mtd->oobsize; |
304 | readlen = len * mtd->oobblock; | 302 | readlen = len * mtd->oobblock; |
305 | ooblen = len * mtd->oobsize; | 303 | ooblen = len * mtd->oobsize; |
306 | } | 304 | } |
@@ -313,8 +311,8 @@ static int create_bbt (struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr | |||
313 | from = 0; | 311 | from = 0; |
314 | } else { | 312 | } else { |
315 | if (chip >= this->numchips) { | 313 | if (chip >= this->numchips) { |
316 | printk (KERN_WARNING "create_bbt(): chipnr (%d) > available chips (%d)\n", | 314 | printk(KERN_WARNING "create_bbt(): chipnr (%d) > available chips (%d)\n", |
317 | chip + 1, this->numchips); | 315 | chip + 1, this->numchips); |
318 | return -EINVAL; | 316 | return -EINVAL; |
319 | } | 317 | } |
320 | numblocks = this->chipsize >> (this->bbt_erase_shift - 1); | 318 | numblocks = this->chipsize >> (this->bbt_erase_shift - 1); |
@@ -327,7 +325,7 @@ static int create_bbt (struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr | |||
327 | int ret; | 325 | int ret; |
328 | 326 | ||
329 | if (bd->options & NAND_BBT_SCANEMPTY) | 327 | if (bd->options & NAND_BBT_SCANEMPTY) |
330 | if ((ret = nand_read_raw (mtd, buf, from, readlen, ooblen))) | 328 | if ((ret = nand_read_raw(mtd, buf, from, readlen, ooblen))) |
331 | return ret; | 329 | return ret; |
332 | 330 | ||
333 | for (j = 0; j < len; j++) { | 331 | for (j = 0; j < len; j++) { |
@@ -336,22 +334,21 @@ static int create_bbt (struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr | |||
336 | 334 | ||
337 | /* Read the full oob until read_oob is fixed to | 335 | /* Read the full oob until read_oob is fixed to |
338 | * handle single byte reads for 16 bit buswidth */ | 336 | * handle single byte reads for 16 bit buswidth */ |
339 | ret = mtd->read_oob(mtd, from + j * mtd->oobblock, | 337 | ret = mtd->read_oob(mtd, from + j * mtd->oobblock, mtd->oobsize, &retlen, buf); |
340 | mtd->oobsize, &retlen, buf); | ||
341 | if (ret) | 338 | if (ret) |
342 | return ret; | 339 | return ret; |
343 | 340 | ||
344 | if (check_short_pattern (buf, bd)) { | 341 | if (check_short_pattern(buf, bd)) { |
345 | this->bbt[i >> 3] |= 0x03 << (i & 0x6); | 342 | this->bbt[i >> 3] |= 0x03 << (i & 0x6); |
346 | printk (KERN_WARNING "Bad eraseblock %d at 0x%08x\n", | 343 | printk(KERN_WARNING "Bad eraseblock %d at 0x%08x\n", |
347 | i >> 1, (unsigned int) from); | 344 | i >> 1, (unsigned int)from); |
348 | break; | 345 | break; |
349 | } | 346 | } |
350 | } else { | 347 | } else { |
351 | if (check_pattern (&buf[j * scanlen], scanlen, mtd->oobblock, bd)) { | 348 | if (check_pattern(&buf[j * scanlen], scanlen, mtd->oobblock, bd)) { |
352 | this->bbt[i >> 3] |= 0x03 << (i & 0x6); | 349 | this->bbt[i >> 3] |= 0x03 << (i & 0x6); |
353 | printk (KERN_WARNING "Bad eraseblock %d at 0x%08x\n", | 350 | printk(KERN_WARNING "Bad eraseblock %d at 0x%08x\n", |
354 | i >> 1, (unsigned int) from); | 351 | i >> 1, (unsigned int)from); |
355 | break; | 352 | break; |
356 | } | 353 | } |
357 | } | 354 | } |
@@ -374,12 +371,12 @@ static int create_bbt (struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr | |||
374 | * block. | 371 | * block. |
375 | * If the option NAND_BBT_PERCHIP is given, each chip is searched | 372 | * If the option NAND_BBT_PERCHIP is given, each chip is searched |
376 | * for a bbt, which contains the bad block information of this chip. | 373 | * for a bbt, which contains the bad block information of this chip. |
377 | * This is neccecary to provide support for certain DOC devices. | 374 | * This is necessary to provide support for certain DOC devices. |
378 | * | 375 | * |
379 | * The bbt ident pattern resides in the oob area of the first page | 376 | * The bbt ident pattern resides in the oob area of the first page |
380 | * in a block. | 377 | * in a block. |
381 | */ | 378 | */ |
382 | static int search_bbt (struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr *td) | 379 | static int search_bbt(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr *td) |
383 | { | 380 | { |
384 | struct nand_chip *this = mtd->priv; | 381 | struct nand_chip *this = mtd->priv; |
385 | int i, chips; | 382 | int i, chips; |
@@ -389,7 +386,7 @@ static int search_bbt (struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr | |||
389 | 386 | ||
390 | /* Search direction top -> down ? */ | 387 | /* Search direction top -> down ? */ |
391 | if (td->options & NAND_BBT_LASTBLOCK) { | 388 | if (td->options & NAND_BBT_LASTBLOCK) { |
392 | startblock = (mtd->size >> this->bbt_erase_shift) -1; | 389 | startblock = (mtd->size >> this->bbt_erase_shift) - 1; |
393 | dir = -1; | 390 | dir = -1; |
394 | } else { | 391 | } else { |
395 | startblock = 0; | 392 | startblock = 0; |
@@ -417,7 +414,7 @@ static int search_bbt (struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr | |||
417 | for (block = 0; block < td->maxblocks; block++) { | 414 | for (block = 0; block < td->maxblocks; block++) { |
418 | int actblock = startblock + dir * block; | 415 | int actblock = startblock + dir * block; |
419 | /* Read first page */ | 416 | /* Read first page */ |
420 | nand_read_raw (mtd, buf, actblock << this->bbt_erase_shift, mtd->oobblock, mtd->oobsize); | 417 | nand_read_raw(mtd, buf, actblock << this->bbt_erase_shift, mtd->oobblock, mtd->oobsize); |
421 | if (!check_pattern(buf, scanlen, mtd->oobblock, td)) { | 418 | if (!check_pattern(buf, scanlen, mtd->oobblock, td)) { |
422 | td->pages[i] = actblock << (this->bbt_erase_shift - this->page_shift); | 419 | td->pages[i] = actblock << (this->bbt_erase_shift - this->page_shift); |
423 | if (td->options & NAND_BBT_VERSION) { | 420 | if (td->options & NAND_BBT_VERSION) { |
@@ -431,9 +428,10 @@ static int search_bbt (struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr | |||
431 | /* Check, if we found a bbt for each requested chip */ | 428 | /* Check, if we found a bbt for each requested chip */ |
432 | for (i = 0; i < chips; i++) { | 429 | for (i = 0; i < chips; i++) { |
433 | if (td->pages[i] == -1) | 430 | if (td->pages[i] == -1) |
434 | printk (KERN_WARNING "Bad block table not found for chip %d\n", i); | 431 | printk(KERN_WARNING "Bad block table not found for chip %d\n", i); |
435 | else | 432 | else |
436 | printk (KERN_DEBUG "Bad block table found at page %d, version 0x%02X\n", td->pages[i], td->version[i]); | 433 | printk(KERN_DEBUG "Bad block table found at page %d, version 0x%02X\n", td->pages[i], |
434 | td->version[i]); | ||
437 | } | 435 | } |
438 | return 0; | 436 | return 0; |
439 | } | 437 | } |
@@ -447,21 +445,19 @@ static int search_bbt (struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr | |||
447 | * | 445 | * |
448 | * Search and read the bad block table(s) | 446 | * Search and read the bad block table(s) |
449 | */ | 447 | */ |
450 | static int search_read_bbts (struct mtd_info *mtd, uint8_t *buf, | 448 | static int search_read_bbts(struct mtd_info *mtd, uint8_t * buf, struct nand_bbt_descr *td, struct nand_bbt_descr *md) |
451 | struct nand_bbt_descr *td, struct nand_bbt_descr *md) | ||
452 | { | 449 | { |
453 | /* Search the primary table */ | 450 | /* Search the primary table */ |
454 | search_bbt (mtd, buf, td); | 451 | search_bbt(mtd, buf, td); |
455 | 452 | ||
456 | /* Search the mirror table */ | 453 | /* Search the mirror table */ |
457 | if (md) | 454 | if (md) |
458 | search_bbt (mtd, buf, md); | 455 | search_bbt(mtd, buf, md); |
459 | 456 | ||
460 | /* Force result check */ | 457 | /* Force result check */ |
461 | return 1; | 458 | return 1; |
462 | } | 459 | } |
463 | 460 | ||
464 | |||
465 | /** | 461 | /** |
466 | * write_bbt - [GENERIC] (Re)write the bad block table | 462 | * write_bbt - [GENERIC] (Re)write the bad block table |
467 | * | 463 | * |
@@ -474,8 +470,8 @@ static int search_read_bbts (struct mtd_info *mtd, uint8_t *buf, | |||
474 | * (Re)write the bad block table | 470 | * (Re)write the bad block table |
475 | * | 471 | * |
476 | */ | 472 | */ |
477 | static int write_bbt (struct mtd_info *mtd, uint8_t *buf, | 473 | static int write_bbt(struct mtd_info *mtd, uint8_t *buf, |
478 | struct nand_bbt_descr *td, struct nand_bbt_descr *md, int chipsel) | 474 | struct nand_bbt_descr *td, struct nand_bbt_descr *md, int chipsel) |
479 | { | 475 | { |
480 | struct nand_chip *this = mtd->priv; | 476 | struct nand_chip *this = mtd->priv; |
481 | struct nand_oobinfo oobinfo; | 477 | struct nand_oobinfo oobinfo; |
@@ -492,7 +488,7 @@ static int write_bbt (struct mtd_info *mtd, uint8_t *buf, | |||
492 | rcode = 0xff; | 488 | rcode = 0xff; |
493 | /* Write bad block table per chip rather than per device ? */ | 489 | /* Write bad block table per chip rather than per device ? */ |
494 | if (td->options & NAND_BBT_PERCHIP) { | 490 | if (td->options & NAND_BBT_PERCHIP) { |
495 | numblocks = (int) (this->chipsize >> this->bbt_erase_shift); | 491 | numblocks = (int)(this->chipsize >> this->bbt_erase_shift); |
496 | /* Full device write or specific chip ? */ | 492 | /* Full device write or specific chip ? */ |
497 | if (chipsel == -1) { | 493 | if (chipsel == -1) { |
498 | nrchips = this->numchips; | 494 | nrchips = this->numchips; |
@@ -501,7 +497,7 @@ static int write_bbt (struct mtd_info *mtd, uint8_t *buf, | |||
501 | chip = chipsel; | 497 | chip = chipsel; |
502 | } | 498 | } |
503 | } else { | 499 | } else { |
504 | numblocks = (int) (mtd->size >> this->bbt_erase_shift); | 500 | numblocks = (int)(mtd->size >> this->bbt_erase_shift); |
505 | nrchips = 1; | 501 | nrchips = 1; |
506 | } | 502 | } |
507 | 503 | ||
@@ -540,9 +536,9 @@ static int write_bbt (struct mtd_info *mtd, uint8_t *buf, | |||
540 | if (!md || md->pages[chip] != page) | 536 | if (!md || md->pages[chip] != page) |
541 | goto write; | 537 | goto write; |
542 | } | 538 | } |
543 | printk (KERN_ERR "No space left to write bad block table\n"); | 539 | printk(KERN_ERR "No space left to write bad block table\n"); |
544 | return -ENOSPC; | 540 | return -ENOSPC; |
545 | write: | 541 | write: |
546 | 542 | ||
547 | /* Set up shift count and masks for the flash table */ | 543 | /* Set up shift count and masks for the flash table */ |
548 | bits = td->options & NAND_BBT_NRBITS_MSK; | 544 | bits = td->options & NAND_BBT_NRBITS_MSK; |
@@ -558,7 +554,7 @@ write: | |||
558 | 554 | ||
559 | to = ((loff_t) page) << this->page_shift; | 555 | to = ((loff_t) page) << this->page_shift; |
560 | 556 | ||
561 | memcpy (&oobinfo, this->autooob, sizeof(oobinfo)); | 557 | memcpy(&oobinfo, this->autooob, sizeof(oobinfo)); |
562 | oobinfo.useecc = MTD_NANDECC_PLACEONLY; | 558 | oobinfo.useecc = MTD_NANDECC_PLACEONLY; |
563 | 559 | ||
564 | /* Must we save the block contents ? */ | 560 | /* Must we save the block contents ? */ |
@@ -566,22 +562,23 @@ write: | |||
566 | /* Make it block aligned */ | 562 | /* Make it block aligned */ |
567 | to &= ~((loff_t) ((1 << this->bbt_erase_shift) - 1)); | 563 | to &= ~((loff_t) ((1 << this->bbt_erase_shift) - 1)); |
568 | len = 1 << this->bbt_erase_shift; | 564 | len = 1 << this->bbt_erase_shift; |
569 | res = mtd->read_ecc (mtd, to, len, &retlen, buf, &buf[len], &oobinfo); | 565 | res = mtd->read_ecc(mtd, to, len, &retlen, buf, &buf[len], &oobinfo); |
570 | if (res < 0) { | 566 | if (res < 0) { |
571 | if (retlen != len) { | 567 | if (retlen != len) { |
572 | printk (KERN_INFO "nand_bbt: Error reading block for writing the bad block table\n"); | 568 | printk(KERN_INFO |
569 | "nand_bbt: Error reading block for writing the bad block table\n"); | ||
573 | return res; | 570 | return res; |
574 | } | 571 | } |
575 | printk (KERN_WARNING "nand_bbt: ECC error while reading block for writing bad block table\n"); | 572 | printk(KERN_WARNING "nand_bbt: ECC error while reading block for writing bad block table\n"); |
576 | } | 573 | } |
577 | /* Calc the byte offset in the buffer */ | 574 | /* Calc the byte offset in the buffer */ |
578 | pageoffs = page - (int)(to >> this->page_shift); | 575 | pageoffs = page - (int)(to >> this->page_shift); |
579 | offs = pageoffs << this->page_shift; | 576 | offs = pageoffs << this->page_shift; |
580 | /* Preset the bbt area with 0xff */ | 577 | /* Preset the bbt area with 0xff */ |
581 | memset (&buf[offs], 0xff, (size_t)(numblocks >> sft)); | 578 | memset(&buf[offs], 0xff, (size_t) (numblocks >> sft)); |
582 | /* Preset the bbt's oob area with 0xff */ | 579 | /* Preset the bbt's oob area with 0xff */ |
583 | memset (&buf[len + pageoffs * mtd->oobsize], 0xff, | 580 | memset(&buf[len + pageoffs * mtd->oobsize], 0xff, |
584 | ((len >> this->page_shift) - pageoffs) * mtd->oobsize); | 581 | ((len >> this->page_shift) - pageoffs) * mtd->oobsize); |
585 | if (td->options & NAND_BBT_VERSION) { | 582 | if (td->options & NAND_BBT_VERSION) { |
586 | buf[len + (pageoffs * mtd->oobsize) + td->veroffs] = td->version[chip]; | 583 | buf[len + (pageoffs * mtd->oobsize) + td->veroffs] = td->version[chip]; |
587 | } | 584 | } |
@@ -589,22 +586,22 @@ write: | |||
589 | /* Calc length */ | 586 | /* Calc length */ |
590 | len = (size_t) (numblocks >> sft); | 587 | len = (size_t) (numblocks >> sft); |
591 | /* Make it page aligned ! */ | 588 | /* Make it page aligned ! */ |
592 | len = (len + (mtd->oobblock-1)) & ~(mtd->oobblock-1); | 589 | len = (len + (mtd->oobblock - 1)) & ~(mtd->oobblock - 1); |
593 | /* Preset the buffer with 0xff */ | 590 | /* Preset the buffer with 0xff */ |
594 | memset (buf, 0xff, len + (len >> this->page_shift) * mtd->oobsize); | 591 | memset(buf, 0xff, len + (len >> this->page_shift) * mtd->oobsize); |
595 | offs = 0; | 592 | offs = 0; |
596 | /* Pattern is located in oob area of first page */ | 593 | /* Pattern is located in oob area of first page */ |
597 | memcpy (&buf[len + td->offs], td->pattern, td->len); | 594 | memcpy(&buf[len + td->offs], td->pattern, td->len); |
598 | if (td->options & NAND_BBT_VERSION) { | 595 | if (td->options & NAND_BBT_VERSION) { |
599 | buf[len + td->veroffs] = td->version[chip]; | 596 | buf[len + td->veroffs] = td->version[chip]; |
600 | } | 597 | } |
601 | } | 598 | } |
602 | 599 | ||
603 | /* walk through the memory table */ | 600 | /* walk through the memory table */ |
604 | for (i = 0; i < numblocks; ) { | 601 | for (i = 0; i < numblocks;) { |
605 | uint8_t dat; | 602 | uint8_t dat; |
606 | dat = this->bbt[bbtoffs + (i >> 2)]; | 603 | dat = this->bbt[bbtoffs + (i >> 2)]; |
607 | for (j = 0; j < 4; j++ , i++) { | 604 | for (j = 0; j < 4; j++, i++) { |
608 | int sftcnt = (i << (3 - sft)) & sftmsk; | 605 | int sftcnt = (i << (3 - sft)) & sftmsk; |
609 | /* Do not store the reserved bbt blocks ! */ | 606 | /* Do not store the reserved bbt blocks ! */ |
610 | buf[offs + (i >> sft)] &= ~(msk[dat & 0x03] << sftcnt); | 607 | buf[offs + (i >> sft)] &= ~(msk[dat & 0x03] << sftcnt); |
@@ -612,23 +609,23 @@ write: | |||
612 | } | 609 | } |
613 | } | 610 | } |
614 | 611 | ||
615 | memset (&einfo, 0, sizeof (einfo)); | 612 | memset(&einfo, 0, sizeof(einfo)); |
616 | einfo.mtd = mtd; | 613 | einfo.mtd = mtd; |
617 | einfo.addr = (unsigned long) to; | 614 | einfo.addr = (unsigned long)to; |
618 | einfo.len = 1 << this->bbt_erase_shift; | 615 | einfo.len = 1 << this->bbt_erase_shift; |
619 | res = nand_erase_nand (mtd, &einfo, 1); | 616 | res = nand_erase_nand(mtd, &einfo, 1); |
620 | if (res < 0) { | 617 | if (res < 0) { |
621 | printk (KERN_WARNING "nand_bbt: Error during block erase: %d\n", res); | 618 | printk(KERN_WARNING "nand_bbt: Error during block erase: %d\n", res); |
622 | return res; | 619 | return res; |
623 | } | 620 | } |
624 | 621 | ||
625 | res = mtd->write_ecc (mtd, to, len, &retlen, buf, &buf[len], &oobinfo); | 622 | res = mtd->write_ecc(mtd, to, len, &retlen, buf, &buf[len], &oobinfo); |
626 | if (res < 0) { | 623 | if (res < 0) { |
627 | printk (KERN_WARNING "nand_bbt: Error while writing bad block table %d\n", res); | 624 | printk(KERN_WARNING "nand_bbt: Error while writing bad block table %d\n", res); |
628 | return res; | 625 | return res; |
629 | } | 626 | } |
630 | printk (KERN_DEBUG "Bad block table written to 0x%08x, version 0x%02X\n", | 627 | printk(KERN_DEBUG "Bad block table written to 0x%08x, version 0x%02X\n", |
631 | (unsigned int) to, td->version[chip]); | 628 | (unsigned int)to, td->version[chip]); |
632 | 629 | ||
633 | /* Mark it as used */ | 630 | /* Mark it as used */ |
634 | td->pages[chip] = page; | 631 | td->pages[chip] = page; |
@@ -644,27 +641,27 @@ write: | |||
644 | * The function creates a memory based bbt by scanning the device | 641 | * The function creates a memory based bbt by scanning the device |
645 | * for manufacturer / software marked good / bad blocks | 642 | * for manufacturer / software marked good / bad blocks |
646 | */ | 643 | */ |
647 | static inline int nand_memory_bbt (struct mtd_info *mtd, struct nand_bbt_descr *bd) | 644 | static inline int nand_memory_bbt(struct mtd_info *mtd, struct nand_bbt_descr *bd) |
648 | { | 645 | { |
649 | struct nand_chip *this = mtd->priv; | 646 | struct nand_chip *this = mtd->priv; |
650 | 647 | ||
651 | bd->options &= ~NAND_BBT_SCANEMPTY; | 648 | bd->options &= ~NAND_BBT_SCANEMPTY; |
652 | return create_bbt (mtd, this->data_buf, bd, -1); | 649 | return create_bbt(mtd, this->data_buf, bd, -1); |
653 | } | 650 | } |
654 | 651 | ||
655 | /** | 652 | /** |
656 | * check_create - [GENERIC] create and write bbt(s) if neccecary | 653 | * check_create - [GENERIC] create and write bbt(s) if necessary |
657 | * @mtd: MTD device structure | 654 | * @mtd: MTD device structure |
658 | * @buf: temporary buffer | 655 | * @buf: temporary buffer |
659 | * @bd: descriptor for the good/bad block search pattern | 656 | * @bd: descriptor for the good/bad block search pattern |
660 | * | 657 | * |
661 | * The function checks the results of the previous call to read_bbt | 658 | * The function checks the results of the previous call to read_bbt |
662 | * and creates / updates the bbt(s) if neccecary | 659 | * and creates / updates the bbt(s) if necessary |
663 | * Creation is neccecary if no bbt was found for the chip/device | 660 | * Creation is necessary if no bbt was found for the chip/device |
664 | * Update is neccecary if one of the tables is missing or the | 661 | * Update is necessary if one of the tables is missing or the |
665 | * version nr. of one table is less than the other | 662 | * version nr. of one table is less than the other |
666 | */ | 663 | */ |
667 | static int check_create (struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr *bd) | 664 | static int check_create(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr *bd) |
668 | { | 665 | { |
669 | int i, chips, writeops, chipsel, res; | 666 | int i, chips, writeops, chipsel, res; |
670 | struct nand_chip *this = mtd->priv; | 667 | struct nand_chip *this = mtd->priv; |
@@ -732,35 +729,35 @@ static int check_create (struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_des | |||
732 | rd = td; | 729 | rd = td; |
733 | goto writecheck; | 730 | goto writecheck; |
734 | } | 731 | } |
735 | create: | 732 | create: |
736 | /* Create the bad block table by scanning the device ? */ | 733 | /* Create the bad block table by scanning the device ? */ |
737 | if (!(td->options & NAND_BBT_CREATE)) | 734 | if (!(td->options & NAND_BBT_CREATE)) |
738 | continue; | 735 | continue; |
739 | 736 | ||
740 | /* Create the table in memory by scanning the chip(s) */ | 737 | /* Create the table in memory by scanning the chip(s) */ |
741 | create_bbt (mtd, buf, bd, chipsel); | 738 | create_bbt(mtd, buf, bd, chipsel); |
742 | 739 | ||
743 | td->version[i] = 1; | 740 | td->version[i] = 1; |
744 | if (md) | 741 | if (md) |
745 | md->version[i] = 1; | 742 | md->version[i] = 1; |
746 | writecheck: | 743 | writecheck: |
747 | /* read back first ? */ | 744 | /* read back first ? */ |
748 | if (rd) | 745 | if (rd) |
749 | read_abs_bbt (mtd, buf, rd, chipsel); | 746 | read_abs_bbt(mtd, buf, rd, chipsel); |
750 | /* If they weren't versioned, read both. */ | 747 | /* If they weren't versioned, read both. */ |
751 | if (rd2) | 748 | if (rd2) |
752 | read_abs_bbt (mtd, buf, rd2, chipsel); | 749 | read_abs_bbt(mtd, buf, rd2, chipsel); |
753 | 750 | ||
754 | /* Write the bad block table to the device ? */ | 751 | /* Write the bad block table to the device ? */ |
755 | if ((writeops & 0x01) && (td->options & NAND_BBT_WRITE)) { | 752 | if ((writeops & 0x01) && (td->options & NAND_BBT_WRITE)) { |
756 | res = write_bbt (mtd, buf, td, md, chipsel); | 753 | res = write_bbt(mtd, buf, td, md, chipsel); |
757 | if (res < 0) | 754 | if (res < 0) |
758 | return res; | 755 | return res; |
759 | } | 756 | } |
760 | 757 | ||
761 | /* Write the mirror bad block table to the device ? */ | 758 | /* Write the mirror bad block table to the device ? */ |
762 | if ((writeops & 0x02) && md && (md->options & NAND_BBT_WRITE)) { | 759 | if ((writeops & 0x02) && md && (md->options & NAND_BBT_WRITE)) { |
763 | res = write_bbt (mtd, buf, md, td, chipsel); | 760 | res = write_bbt(mtd, buf, md, td, chipsel); |
764 | if (res < 0) | 761 | if (res < 0) |
765 | return res; | 762 | return res; |
766 | } | 763 | } |
@@ -777,7 +774,7 @@ writecheck: | |||
777 | * accidental erasures / writes. The regions are identified by | 774 | * accidental erasures / writes. The regions are identified by |
778 | * the mark 0x02. | 775 | * the mark 0x02. |
779 | */ | 776 | */ |
780 | static void mark_bbt_region (struct mtd_info *mtd, struct nand_bbt_descr *td) | 777 | static void mark_bbt_region(struct mtd_info *mtd, struct nand_bbt_descr *td) |
781 | { | 778 | { |
782 | struct nand_chip *this = mtd->priv; | 779 | struct nand_chip *this = mtd->priv; |
783 | int i, j, chips, block, nrblocks, update; | 780 | int i, j, chips, block, nrblocks, update; |
@@ -795,7 +792,8 @@ static void mark_bbt_region (struct mtd_info *mtd, struct nand_bbt_descr *td) | |||
795 | for (i = 0; i < chips; i++) { | 792 | for (i = 0; i < chips; i++) { |
796 | if ((td->options & NAND_BBT_ABSPAGE) || | 793 | if ((td->options & NAND_BBT_ABSPAGE) || |
797 | !(td->options & NAND_BBT_WRITE)) { | 794 | !(td->options & NAND_BBT_WRITE)) { |
798 | if (td->pages[i] == -1) continue; | 795 | if (td->pages[i] == -1) |
796 | continue; | ||
799 | block = td->pages[i] >> (this->bbt_erase_shift - this->page_shift); | 797 | block = td->pages[i] >> (this->bbt_erase_shift - this->page_shift); |
800 | block <<= 1; | 798 | block <<= 1; |
801 | oldval = this->bbt[(block >> 3)]; | 799 | oldval = this->bbt[(block >> 3)]; |
@@ -815,7 +813,8 @@ static void mark_bbt_region (struct mtd_info *mtd, struct nand_bbt_descr *td) | |||
815 | oldval = this->bbt[(block >> 3)]; | 813 | oldval = this->bbt[(block >> 3)]; |
816 | newval = oldval | (0x2 << (block & 0x06)); | 814 | newval = oldval | (0x2 << (block & 0x06)); |
817 | this->bbt[(block >> 3)] = newval; | 815 | this->bbt[(block >> 3)] = newval; |
818 | if (oldval != newval) update = 1; | 816 | if (oldval != newval) |
817 | update = 1; | ||
819 | block += 2; | 818 | block += 2; |
820 | } | 819 | } |
821 | /* If we want reserved blocks to be recorded to flash, and some | 820 | /* If we want reserved blocks to be recorded to flash, and some |
@@ -840,7 +839,7 @@ static void mark_bbt_region (struct mtd_info *mtd, struct nand_bbt_descr *td) | |||
840 | * by calling the nand_free_bbt function. | 839 | * by calling the nand_free_bbt function. |
841 | * | 840 | * |
842 | */ | 841 | */ |
843 | int nand_scan_bbt (struct mtd_info *mtd, struct nand_bbt_descr *bd) | 842 | int nand_scan_bbt(struct mtd_info *mtd, struct nand_bbt_descr *bd) |
844 | { | 843 | { |
845 | struct nand_chip *this = mtd->priv; | 844 | struct nand_chip *this = mtd->priv; |
846 | int len, res = 0; | 845 | int len, res = 0; |
@@ -850,21 +849,21 @@ int nand_scan_bbt (struct mtd_info *mtd, struct nand_bbt_descr *bd) | |||
850 | 849 | ||
851 | len = mtd->size >> (this->bbt_erase_shift + 2); | 850 | len = mtd->size >> (this->bbt_erase_shift + 2); |
852 | /* Allocate memory (2bit per block) */ | 851 | /* Allocate memory (2bit per block) */ |
853 | this->bbt = kmalloc (len, GFP_KERNEL); | 852 | this->bbt = kmalloc(len, GFP_KERNEL); |
854 | if (!this->bbt) { | 853 | if (!this->bbt) { |
855 | printk (KERN_ERR "nand_scan_bbt: Out of memory\n"); | 854 | printk(KERN_ERR "nand_scan_bbt: Out of memory\n"); |
856 | return -ENOMEM; | 855 | return -ENOMEM; |
857 | } | 856 | } |
858 | /* Clear the memory bad block table */ | 857 | /* Clear the memory bad block table */ |
859 | memset (this->bbt, 0x00, len); | 858 | memset(this->bbt, 0x00, len); |
860 | 859 | ||
861 | /* If no primary table decriptor is given, scan the device | 860 | /* If no primary table decriptor is given, scan the device |
862 | * to build a memory based bad block table | 861 | * to build a memory based bad block table |
863 | */ | 862 | */ |
864 | if (!td) { | 863 | if (!td) { |
865 | if ((res = nand_memory_bbt(mtd, bd))) { | 864 | if ((res = nand_memory_bbt(mtd, bd))) { |
866 | printk (KERN_ERR "nand_bbt: Can't scan flash and build the RAM-based BBT\n"); | 865 | printk(KERN_ERR "nand_bbt: Can't scan flash and build the RAM-based BBT\n"); |
867 | kfree (this->bbt); | 866 | kfree(this->bbt); |
868 | this->bbt = NULL; | 867 | this->bbt = NULL; |
869 | } | 868 | } |
870 | return res; | 869 | return res; |
@@ -875,33 +874,32 @@ int nand_scan_bbt (struct mtd_info *mtd, struct nand_bbt_descr *bd) | |||
875 | len += (len >> this->page_shift) * mtd->oobsize; | 874 | len += (len >> this->page_shift) * mtd->oobsize; |
876 | buf = vmalloc(len); | 875 | buf = vmalloc(len); |
877 | if (!buf) { | 876 | if (!buf) { |
878 | printk (KERN_ERR "nand_bbt: Out of memory\n"); | 877 | printk(KERN_ERR "nand_bbt: Out of memory\n"); |
879 | kfree (this->bbt); | 878 | kfree(this->bbt); |
880 | this->bbt = NULL; | 879 | this->bbt = NULL; |
881 | return -ENOMEM; | 880 | return -ENOMEM; |
882 | } | 881 | } |
883 | 882 | ||
884 | /* Is the bbt at a given page ? */ | 883 | /* Is the bbt at a given page ? */ |
885 | if (td->options & NAND_BBT_ABSPAGE) { | 884 | if (td->options & NAND_BBT_ABSPAGE) { |
886 | res = read_abs_bbts (mtd, buf, td, md); | 885 | res = read_abs_bbts(mtd, buf, td, md); |
887 | } else { | 886 | } else { |
888 | /* Search the bad block table using a pattern in oob */ | 887 | /* Search the bad block table using a pattern in oob */ |
889 | res = search_read_bbts (mtd, buf, td, md); | 888 | res = search_read_bbts(mtd, buf, td, md); |
890 | } | 889 | } |
891 | 890 | ||
892 | if (res) | 891 | if (res) |
893 | res = check_create (mtd, buf, bd); | 892 | res = check_create(mtd, buf, bd); |
894 | 893 | ||
895 | /* Prevent the bbt regions from erasing / writing */ | 894 | /* Prevent the bbt regions from erasing / writing */ |
896 | mark_bbt_region (mtd, td); | 895 | mark_bbt_region(mtd, td); |
897 | if (md) | 896 | if (md) |
898 | mark_bbt_region (mtd, md); | 897 | mark_bbt_region(mtd, md); |
899 | 898 | ||
900 | vfree (buf); | 899 | vfree(buf); |
901 | return res; | 900 | return res; |
902 | } | 901 | } |
903 | 902 | ||
904 | |||
905 | /** | 903 | /** |
906 | * nand_update_bbt - [NAND Interface] update bad block table(s) | 904 | * nand_update_bbt - [NAND Interface] update bad block table(s) |
907 | * @mtd: MTD device structure | 905 | * @mtd: MTD device structure |
@@ -909,7 +907,7 @@ int nand_scan_bbt (struct mtd_info *mtd, struct nand_bbt_descr *bd) | |||
909 | * | 907 | * |
910 | * The function updates the bad block table(s) | 908 | * The function updates the bad block table(s) |
911 | */ | 909 | */ |
912 | int nand_update_bbt (struct mtd_info *mtd, loff_t offs) | 910 | int nand_update_bbt(struct mtd_info *mtd, loff_t offs) |
913 | { | 911 | { |
914 | struct nand_chip *this = mtd->priv; | 912 | struct nand_chip *this = mtd->priv; |
915 | int len, res = 0, writeops = 0; | 913 | int len, res = 0, writeops = 0; |
@@ -925,9 +923,9 @@ int nand_update_bbt (struct mtd_info *mtd, loff_t offs) | |||
925 | /* Allocate a temporary buffer for one eraseblock incl. oob */ | 923 | /* Allocate a temporary buffer for one eraseblock incl. oob */ |
926 | len = (1 << this->bbt_erase_shift); | 924 | len = (1 << this->bbt_erase_shift); |
927 | len += (len >> this->page_shift) * mtd->oobsize; | 925 | len += (len >> this->page_shift) * mtd->oobsize; |
928 | buf = kmalloc (len, GFP_KERNEL); | 926 | buf = kmalloc(len, GFP_KERNEL); |
929 | if (!buf) { | 927 | if (!buf) { |
930 | printk (KERN_ERR "nand_update_bbt: Out of memory\n"); | 928 | printk(KERN_ERR "nand_update_bbt: Out of memory\n"); |
931 | return -ENOMEM; | 929 | return -ENOMEM; |
932 | } | 930 | } |
933 | 931 | ||
@@ -935,7 +933,7 @@ int nand_update_bbt (struct mtd_info *mtd, loff_t offs) | |||
935 | 933 | ||
936 | /* Do we have a bbt per chip ? */ | 934 | /* Do we have a bbt per chip ? */ |
937 | if (td->options & NAND_BBT_PERCHIP) { | 935 | if (td->options & NAND_BBT_PERCHIP) { |
938 | chip = (int) (offs >> this->chip_shift); | 936 | chip = (int)(offs >> this->chip_shift); |
939 | chipsel = chip; | 937 | chipsel = chip; |
940 | } else { | 938 | } else { |
941 | chip = 0; | 939 | chip = 0; |
@@ -948,17 +946,17 @@ int nand_update_bbt (struct mtd_info *mtd, loff_t offs) | |||
948 | 946 | ||
949 | /* Write the bad block table to the device ? */ | 947 | /* Write the bad block table to the device ? */ |
950 | if ((writeops & 0x01) && (td->options & NAND_BBT_WRITE)) { | 948 | if ((writeops & 0x01) && (td->options & NAND_BBT_WRITE)) { |
951 | res = write_bbt (mtd, buf, td, md, chipsel); | 949 | res = write_bbt(mtd, buf, td, md, chipsel); |
952 | if (res < 0) | 950 | if (res < 0) |
953 | goto out; | 951 | goto out; |
954 | } | 952 | } |
955 | /* Write the mirror bad block table to the device ? */ | 953 | /* Write the mirror bad block table to the device ? */ |
956 | if ((writeops & 0x02) && md && (md->options & NAND_BBT_WRITE)) { | 954 | if ((writeops & 0x02) && md && (md->options & NAND_BBT_WRITE)) { |
957 | res = write_bbt (mtd, buf, md, td, chipsel); | 955 | res = write_bbt(mtd, buf, md, td, chipsel); |
958 | } | 956 | } |
959 | 957 | ||
960 | out: | 958 | out: |
961 | kfree (buf); | 959 | kfree(buf); |
962 | return res; | 960 | return res; |
963 | } | 961 | } |
964 | 962 | ||
@@ -1036,7 +1034,7 @@ static struct nand_bbt_descr bbt_mirror_descr = { | |||
1036 | * support for the device and calls the nand_scan_bbt function | 1034 | * support for the device and calls the nand_scan_bbt function |
1037 | * | 1035 | * |
1038 | */ | 1036 | */ |
1039 | int nand_default_bbt (struct mtd_info *mtd) | 1037 | int nand_default_bbt(struct mtd_info *mtd) |
1040 | { | 1038 | { |
1041 | struct nand_chip *this = mtd->priv; | 1039 | struct nand_chip *this = mtd->priv; |
1042 | 1040 | ||
@@ -1046,7 +1044,7 @@ int nand_default_bbt (struct mtd_info *mtd) | |||
1046 | * of the good / bad information, so we _must_ store | 1044 | * of the good / bad information, so we _must_ store |
1047 | * this information in a good / bad table during | 1045 | * this information in a good / bad table during |
1048 | * startup | 1046 | * startup |
1049 | */ | 1047 | */ |
1050 | if (this->options & NAND_IS_AND) { | 1048 | if (this->options & NAND_IS_AND) { |
1051 | /* Use the default pattern descriptors */ | 1049 | /* Use the default pattern descriptors */ |
1052 | if (!this->bbt_td) { | 1050 | if (!this->bbt_td) { |
@@ -1054,10 +1052,9 @@ int nand_default_bbt (struct mtd_info *mtd) | |||
1054 | this->bbt_md = &bbt_mirror_descr; | 1052 | this->bbt_md = &bbt_mirror_descr; |
1055 | } | 1053 | } |
1056 | this->options |= NAND_USE_FLASH_BBT; | 1054 | this->options |= NAND_USE_FLASH_BBT; |
1057 | return nand_scan_bbt (mtd, &agand_flashbased); | 1055 | return nand_scan_bbt(mtd, &agand_flashbased); |
1058 | } | 1056 | } |
1059 | 1057 | ||
1060 | |||
1061 | /* Is a flash based bad block table requested ? */ | 1058 | /* Is a flash based bad block table requested ? */ |
1062 | if (this->options & NAND_USE_FLASH_BBT) { | 1059 | if (this->options & NAND_USE_FLASH_BBT) { |
1063 | /* Use the default pattern descriptors */ | 1060 | /* Use the default pattern descriptors */ |
@@ -1066,18 +1063,17 @@ int nand_default_bbt (struct mtd_info *mtd) | |||
1066 | this->bbt_md = &bbt_mirror_descr; | 1063 | this->bbt_md = &bbt_mirror_descr; |
1067 | } | 1064 | } |
1068 | if (!this->badblock_pattern) { | 1065 | if (!this->badblock_pattern) { |
1069 | this->badblock_pattern = (mtd->oobblock > 512) ? | 1066 | this->badblock_pattern = (mtd->oobblock > 512) ? &largepage_flashbased : &smallpage_flashbased; |
1070 | &largepage_flashbased : &smallpage_flashbased; | ||
1071 | } | 1067 | } |
1072 | } else { | 1068 | } else { |
1073 | this->bbt_td = NULL; | 1069 | this->bbt_td = NULL; |
1074 | this->bbt_md = NULL; | 1070 | this->bbt_md = NULL; |
1075 | if (!this->badblock_pattern) { | 1071 | if (!this->badblock_pattern) { |
1076 | this->badblock_pattern = (mtd->oobblock > 512) ? | 1072 | this->badblock_pattern = (mtd->oobblock > 512) ? |
1077 | &largepage_memorybased : &smallpage_memorybased; | 1073 | &largepage_memorybased : &smallpage_memorybased; |
1078 | } | 1074 | } |
1079 | } | 1075 | } |
1080 | return nand_scan_bbt (mtd, this->badblock_pattern); | 1076 | return nand_scan_bbt(mtd, this->badblock_pattern); |
1081 | } | 1077 | } |
1082 | 1078 | ||
1083 | /** | 1079 | /** |
@@ -1087,26 +1083,29 @@ int nand_default_bbt (struct mtd_info *mtd) | |||
1087 | * @allowbbt: allow access to bad block table region | 1083 | * @allowbbt: allow access to bad block table region |
1088 | * | 1084 | * |
1089 | */ | 1085 | */ |
1090 | int nand_isbad_bbt (struct mtd_info *mtd, loff_t offs, int allowbbt) | 1086 | int nand_isbad_bbt(struct mtd_info *mtd, loff_t offs, int allowbbt) |
1091 | { | 1087 | { |
1092 | struct nand_chip *this = mtd->priv; | 1088 | struct nand_chip *this = mtd->priv; |
1093 | int block; | 1089 | int block; |
1094 | uint8_t res; | 1090 | uint8_t res; |
1095 | 1091 | ||
1096 | /* Get block number * 2 */ | 1092 | /* Get block number * 2 */ |
1097 | block = (int) (offs >> (this->bbt_erase_shift - 1)); | 1093 | block = (int)(offs >> (this->bbt_erase_shift - 1)); |
1098 | res = (this->bbt[block >> 3] >> (block & 0x06)) & 0x03; | 1094 | res = (this->bbt[block >> 3] >> (block & 0x06)) & 0x03; |
1099 | 1095 | ||
1100 | DEBUG (MTD_DEBUG_LEVEL2, "nand_isbad_bbt(): bbt info for offs 0x%08x: (block %d) 0x%02x\n", | 1096 | DEBUG(MTD_DEBUG_LEVEL2, "nand_isbad_bbt(): bbt info for offs 0x%08x: (block %d) 0x%02x\n", |
1101 | (unsigned int)offs, block >> 1, res); | 1097 | (unsigned int)offs, block >> 1, res); |
1102 | 1098 | ||
1103 | switch ((int)res) { | 1099 | switch ((int)res) { |
1104 | case 0x00: return 0; | 1100 | case 0x00: |
1105 | case 0x01: return 1; | 1101 | return 0; |
1106 | case 0x02: return allowbbt ? 0 : 1; | 1102 | case 0x01: |
1103 | return 1; | ||
1104 | case 0x02: | ||
1105 | return allowbbt ? 0 : 1; | ||
1107 | } | 1106 | } |
1108 | return 1; | 1107 | return 1; |
1109 | } | 1108 | } |
1110 | 1109 | ||
1111 | EXPORT_SYMBOL (nand_scan_bbt); | 1110 | EXPORT_SYMBOL(nand_scan_bbt); |
1112 | EXPORT_SYMBOL (nand_default_bbt); | 1111 | EXPORT_SYMBOL(nand_default_bbt); |