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path: root/drivers/mtd/nand/nand_base.c
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Diffstat (limited to 'drivers/mtd/nand/nand_base.c')
-rw-r--r--drivers/mtd/nand/nand_base.c694
1 files changed, 337 insertions, 357 deletions
diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c
index 95e96fa1fceb..fdaf32083ada 100644
--- a/drivers/mtd/nand/nand_base.c
+++ b/drivers/mtd/nand/nand_base.c
@@ -92,24 +92,24 @@ static struct nand_oobinfo nand_oob_8 = {
92 .useecc = MTD_NANDECC_AUTOPLACE, 92 .useecc = MTD_NANDECC_AUTOPLACE,
93 .eccbytes = 3, 93 .eccbytes = 3,
94 .eccpos = {0, 1, 2}, 94 .eccpos = {0, 1, 2},
95 .oobfree = { {3, 2}, {6, 2} } 95 .oobfree = {{3, 2}, {6, 2}}
96}; 96};
97 97
98static struct nand_oobinfo nand_oob_16 = { 98static struct nand_oobinfo nand_oob_16 = {
99 .useecc = MTD_NANDECC_AUTOPLACE, 99 .useecc = MTD_NANDECC_AUTOPLACE,
100 .eccbytes = 6, 100 .eccbytes = 6,
101 .eccpos = {0, 1, 2, 3, 6, 7}, 101 .eccpos = {0, 1, 2, 3, 6, 7},
102 .oobfree = { {8, 8} } 102 .oobfree = {{8, 8}}
103}; 103};
104 104
105static struct nand_oobinfo nand_oob_64 = { 105static struct nand_oobinfo nand_oob_64 = {
106 .useecc = MTD_NANDECC_AUTOPLACE, 106 .useecc = MTD_NANDECC_AUTOPLACE,
107 .eccbytes = 24, 107 .eccbytes = 24,
108 .eccpos = { 108 .eccpos = {
109 40, 41, 42, 43, 44, 45, 46, 47, 109 40, 41, 42, 43, 44, 45, 46, 47,
110 48, 49, 50, 51, 52, 53, 54, 55, 110 48, 49, 50, 51, 52, 53, 54, 55,
111 56, 57, 58, 59, 60, 61, 62, 63}, 111 56, 57, 58, 59, 60, 61, 62, 63},
112 .oobfree = { {2, 38} } 112 .oobfree = {{2, 38}}
113}; 113};
114 114
115/* This is used for padding purposes in nand_write_oob */ 115/* This is used for padding purposes in nand_write_oob */
@@ -131,32 +131,32 @@ static void nand_write_buf(struct mtd_info *mtd, const u_char *buf, int len);
131static void nand_read_buf(struct mtd_info *mtd, u_char *buf, int len); 131static void nand_read_buf(struct mtd_info *mtd, u_char *buf, int len);
132static int nand_verify_buf(struct mtd_info *mtd, const u_char *buf, int len); 132static int nand_verify_buf(struct mtd_info *mtd, const u_char *buf, int len);
133 133
134static int nand_read (struct mtd_info *mtd, loff_t from, size_t len, size_t * retlen, u_char * buf); 134static int nand_read(struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf);
135static int nand_read_ecc (struct mtd_info *mtd, loff_t from, size_t len, 135static int nand_read_ecc(struct mtd_info *mtd, loff_t from, size_t len,
136 size_t * retlen, u_char * buf, u_char * eccbuf, struct nand_oobinfo *oobsel); 136 size_t *retlen, u_char *buf, u_char *eccbuf, struct nand_oobinfo *oobsel);
137static int nand_read_oob (struct mtd_info *mtd, loff_t from, size_t len, size_t * retlen, u_char * buf); 137static int nand_read_oob(struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf);
138static int nand_write (struct mtd_info *mtd, loff_t to, size_t len, size_t * retlen, const u_char * buf); 138static int nand_write(struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen, const u_char *buf);
139static int nand_write_ecc (struct mtd_info *mtd, loff_t to, size_t len, 139static int nand_write_ecc(struct mtd_info *mtd, loff_t to, size_t len,
140 size_t * retlen, const u_char * buf, u_char * eccbuf, struct nand_oobinfo *oobsel); 140 size_t *retlen, const u_char *buf, u_char *eccbuf, struct nand_oobinfo *oobsel);
141static int nand_write_oob (struct mtd_info *mtd, loff_t to, size_t len, size_t * retlen, const u_char *buf); 141static int nand_write_oob(struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen, const u_char *buf);
142static int nand_writev (struct mtd_info *mtd, const struct kvec *vecs, 142static int nand_writev(struct mtd_info *mtd, const struct kvec *vecs, unsigned long count, loff_t to, size_t *retlen);
143 unsigned long count, loff_t to, size_t * retlen); 143static int nand_writev_ecc(struct mtd_info *mtd, const struct kvec *vecs,
144static int nand_writev_ecc (struct mtd_info *mtd, const struct kvec *vecs, 144 unsigned long count, loff_t to, size_t *retlen, u_char *eccbuf,
145 unsigned long count, loff_t to, size_t * retlen, u_char *eccbuf, struct nand_oobinfo *oobsel); 145 struct nand_oobinfo *oobsel);
146static int nand_erase (struct mtd_info *mtd, struct erase_info *instr); 146static int nand_erase(struct mtd_info *mtd, struct erase_info *instr);
147static void nand_sync (struct mtd_info *mtd); 147static void nand_sync(struct mtd_info *mtd);
148 148
149/* Some internal functions */ 149/* Some internal functions */
150static int nand_write_page (struct mtd_info *mtd, struct nand_chip *this, int page, u_char *oob_buf, 150static int nand_write_page(struct mtd_info *mtd, struct nand_chip *this, int page, u_char * oob_buf,
151 struct nand_oobinfo *oobsel, int mode); 151 struct nand_oobinfo *oobsel, int mode);
152#ifdef CONFIG_MTD_NAND_VERIFY_WRITE 152#ifdef CONFIG_MTD_NAND_VERIFY_WRITE
153static int nand_verify_pages (struct mtd_info *mtd, struct nand_chip *this, int page, int numpages, 153static int nand_verify_pages(struct mtd_info *mtd, struct nand_chip *this, int page, int numpages,
154 u_char *oob_buf, struct nand_oobinfo *oobsel, int chipnr, int oobmode); 154 u_char *oob_buf, struct nand_oobinfo *oobsel, int chipnr, int oobmode);
155#else 155#else
156#define nand_verify_pages(...) (0) 156#define nand_verify_pages(...) (0)
157#endif 157#endif
158 158
159static int nand_get_device (struct nand_chip *this, struct mtd_info *mtd, int new_state); 159static int nand_get_device(struct nand_chip *this, struct mtd_info *mtd, int new_state);
160 160
161/** 161/**
162 * nand_release_device - [GENERIC] release chip 162 * nand_release_device - [GENERIC] release chip
@@ -164,7 +164,7 @@ static int nand_get_device (struct nand_chip *this, struct mtd_info *mtd, int ne
164 * 164 *
165 * Deselect, release chip lock and wake up anyone waiting on the device 165 * Deselect, release chip lock and wake up anyone waiting on the device
166 */ 166 */
167static void nand_release_device (struct mtd_info *mtd) 167static void nand_release_device(struct mtd_info *mtd)
168{ 168{
169 struct nand_chip *this = mtd->priv; 169 struct nand_chip *this = mtd->priv;
170 170
@@ -276,7 +276,7 @@ static void nand_write_word(struct mtd_info *mtd, u16 word)
276static void nand_select_chip(struct mtd_info *mtd, int chip) 276static void nand_select_chip(struct mtd_info *mtd, int chip)
277{ 277{
278 struct nand_chip *this = mtd->priv; 278 struct nand_chip *this = mtd->priv;
279 switch(chip) { 279 switch (chip) {
280 case -1: 280 case -1:
281 this->hwcontrol(mtd, NAND_CTL_CLRNCE); 281 this->hwcontrol(mtd, NAND_CTL_CLRNCE);
282 break; 282 break;
@@ -302,7 +302,7 @@ static void nand_write_buf(struct mtd_info *mtd, const u_char *buf, int len)
302 int i; 302 int i;
303 struct nand_chip *this = mtd->priv; 303 struct nand_chip *this = mtd->priv;
304 304
305 for (i=0; i<len; i++) 305 for (i = 0; i < len; i++)
306 writeb(buf[i], this->IO_ADDR_W); 306 writeb(buf[i], this->IO_ADDR_W);
307} 307}
308 308
@@ -319,7 +319,7 @@ static void nand_read_buf(struct mtd_info *mtd, u_char *buf, int len)
319 int i; 319 int i;
320 struct nand_chip *this = mtd->priv; 320 struct nand_chip *this = mtd->priv;
321 321
322 for (i=0; i<len; i++) 322 for (i = 0; i < len; i++)
323 buf[i] = readb(this->IO_ADDR_R); 323 buf[i] = readb(this->IO_ADDR_R);
324} 324}
325 325
@@ -336,7 +336,7 @@ static int nand_verify_buf(struct mtd_info *mtd, const u_char *buf, int len)
336 int i; 336 int i;
337 struct nand_chip *this = mtd->priv; 337 struct nand_chip *this = mtd->priv;
338 338
339 for (i=0; i<len; i++) 339 for (i = 0; i < len; i++)
340 if (buf[i] != readb(this->IO_ADDR_R)) 340 if (buf[i] != readb(this->IO_ADDR_R))
341 return -EFAULT; 341 return -EFAULT;
342 342
@@ -358,7 +358,7 @@ static void nand_write_buf16(struct mtd_info *mtd, const u_char *buf, int len)
358 u16 *p = (u16 *) buf; 358 u16 *p = (u16 *) buf;
359 len >>= 1; 359 len >>= 1;
360 360
361 for (i=0; i<len; i++) 361 for (i = 0; i < len; i++)
362 writew(p[i], this->IO_ADDR_W); 362 writew(p[i], this->IO_ADDR_W);
363 363
364} 364}
@@ -378,7 +378,7 @@ static void nand_read_buf16(struct mtd_info *mtd, u_char *buf, int len)
378 u16 *p = (u16 *) buf; 378 u16 *p = (u16 *) buf;
379 len >>= 1; 379 len >>= 1;
380 380
381 for (i=0; i<len; i++) 381 for (i = 0; i < len; i++)
382 p[i] = readw(this->IO_ADDR_R); 382 p[i] = readw(this->IO_ADDR_R);
383} 383}
384 384
@@ -397,7 +397,7 @@ static int nand_verify_buf16(struct mtd_info *mtd, const u_char *buf, int len)
397 u16 *p = (u16 *) buf; 397 u16 *p = (u16 *) buf;
398 len >>= 1; 398 len >>= 1;
399 399
400 for (i=0; i<len; i++) 400 for (i = 0; i < len; i++)
401 if (p[i] != readw(this->IO_ADDR_R)) 401 if (p[i] != readw(this->IO_ADDR_R))
402 return -EFAULT; 402 return -EFAULT;
403 403
@@ -423,22 +423,22 @@ static int nand_block_bad(struct mtd_info *mtd, loff_t ofs, int getchip)
423 chipnr = (int)(ofs >> this->chip_shift); 423 chipnr = (int)(ofs >> this->chip_shift);
424 424
425 /* Grab the lock and see if the device is available */ 425 /* Grab the lock and see if the device is available */
426 nand_get_device (this, mtd, FL_READING); 426 nand_get_device(this, mtd, FL_READING);
427 427
428 /* Select the NAND device */ 428 /* Select the NAND device */
429 this->select_chip(mtd, chipnr); 429 this->select_chip(mtd, chipnr);
430 } else 430 } else
431 page = (int) ofs; 431 page = (int)ofs;
432 432
433 if (this->options & NAND_BUSWIDTH_16) { 433 if (this->options & NAND_BUSWIDTH_16) {
434 this->cmdfunc (mtd, NAND_CMD_READOOB, this->badblockpos & 0xFE, page & this->pagemask); 434 this->cmdfunc(mtd, NAND_CMD_READOOB, this->badblockpos & 0xFE, page & this->pagemask);
435 bad = cpu_to_le16(this->read_word(mtd)); 435 bad = cpu_to_le16(this->read_word(mtd));
436 if (this->badblockpos & 0x1) 436 if (this->badblockpos & 0x1)
437 bad >>= 8; 437 bad >>= 8;
438 if ((bad & 0xFF) != 0xff) 438 if ((bad & 0xFF) != 0xff)
439 res = 1; 439 res = 1;
440 } else { 440 } else {
441 this->cmdfunc (mtd, NAND_CMD_READOOB, this->badblockpos, page & this->pagemask); 441 this->cmdfunc(mtd, NAND_CMD_READOOB, this->badblockpos, page & this->pagemask);
442 if (this->read_byte(mtd) != 0xff) 442 if (this->read_byte(mtd) != 0xff)
443 res = 1; 443 res = 1;
444 } 444 }
@@ -462,22 +462,22 @@ static int nand_block_bad(struct mtd_info *mtd, loff_t ofs, int getchip)
462static int nand_default_block_markbad(struct mtd_info *mtd, loff_t ofs) 462static int nand_default_block_markbad(struct mtd_info *mtd, loff_t ofs)
463{ 463{
464 struct nand_chip *this = mtd->priv; 464 struct nand_chip *this = mtd->priv;
465 u_char buf[2] = {0, 0}; 465 u_char buf[2] = { 0, 0 };
466 size_t retlen; 466 size_t retlen;
467 int block; 467 int block;
468 468
469 /* Get block number */ 469 /* Get block number */
470 block = ((int) ofs) >> this->bbt_erase_shift; 470 block = ((int)ofs) >> this->bbt_erase_shift;
471 if (this->bbt) 471 if (this->bbt)
472 this->bbt[block >> 2] |= 0x01 << ((block & 0x03) << 1); 472 this->bbt[block >> 2] |= 0x01 << ((block & 0x03) << 1);
473 473
474 /* Do we have a flash based bad block table ? */ 474 /* Do we have a flash based bad block table ? */
475 if (this->options & NAND_USE_FLASH_BBT) 475 if (this->options & NAND_USE_FLASH_BBT)
476 return nand_update_bbt (mtd, ofs); 476 return nand_update_bbt(mtd, ofs);
477 477
478 /* We write two bytes, so we dont have to mess with 16 bit access */ 478 /* We write two bytes, so we dont have to mess with 16 bit access */
479 ofs += mtd->oobsize + (this->badblockpos & ~0x01); 479 ofs += mtd->oobsize + (this->badblockpos & ~0x01);
480 return nand_write_oob (mtd, ofs , 2, &retlen, buf); 480 return nand_write_oob(mtd, ofs, 2, &retlen, buf);
481} 481}
482 482
483/** 483/**
@@ -487,11 +487,11 @@ static int nand_default_block_markbad(struct mtd_info *mtd, loff_t ofs)
487 * 487 *
488 * The function expects, that the device is already selected 488 * The function expects, that the device is already selected
489 */ 489 */
490static int nand_check_wp (struct mtd_info *mtd) 490static int nand_check_wp(struct mtd_info *mtd)
491{ 491{
492 struct nand_chip *this = mtd->priv; 492 struct nand_chip *this = mtd->priv;
493 /* Check the WP bit */ 493 /* Check the WP bit */
494 this->cmdfunc (mtd, NAND_CMD_STATUS, -1, -1); 494 this->cmdfunc(mtd, NAND_CMD_STATUS, -1, -1);
495 return (this->read_byte(mtd) & NAND_STATUS_WP) ? 0 : 1; 495 return (this->read_byte(mtd) & NAND_STATUS_WP) ? 0 : 1;
496} 496}
497 497
@@ -505,7 +505,7 @@ static int nand_check_wp (struct mtd_info *mtd)
505 * Check, if the block is bad. Either by reading the bad block table or 505 * Check, if the block is bad. Either by reading the bad block table or
506 * calling of the scan function. 506 * calling of the scan function.
507 */ 507 */
508static int nand_block_checkbad (struct mtd_info *mtd, loff_t ofs, int getchip, int allowbbt) 508static int nand_block_checkbad(struct mtd_info *mtd, loff_t ofs, int getchip, int allowbbt)
509{ 509{
510 struct nand_chip *this = mtd->priv; 510 struct nand_chip *this = mtd->priv;
511 511
@@ -513,7 +513,7 @@ static int nand_block_checkbad (struct mtd_info *mtd, loff_t ofs, int getchip, i
513 return this->block_bad(mtd, ofs, getchip); 513 return this->block_bad(mtd, ofs, getchip);
514 514
515 /* Return info from the table */ 515 /* Return info from the table */
516 return nand_isbad_bbt (mtd, ofs, allowbbt); 516 return nand_isbad_bbt(mtd, ofs, allowbbt);
517} 517}
518 518
519DEFINE_LED_TRIGGER(nand_led_trigger); 519DEFINE_LED_TRIGGER(nand_led_trigger);
@@ -525,7 +525,7 @@ DEFINE_LED_TRIGGER(nand_led_trigger);
525static void nand_wait_ready(struct mtd_info *mtd) 525static void nand_wait_ready(struct mtd_info *mtd)
526{ 526{
527 struct nand_chip *this = mtd->priv; 527 struct nand_chip *this = mtd->priv;
528 unsigned long timeo = jiffies + 2; 528 unsigned long timeo = jiffies + 2;
529 529
530 led_trigger_event(nand_led_trigger, LED_FULL); 530 led_trigger_event(nand_led_trigger, LED_FULL);
531 /* wait until command is processed or timeout occures */ 531 /* wait until command is processed or timeout occures */
@@ -547,7 +547,7 @@ static void nand_wait_ready(struct mtd_info *mtd)
547 * Send command to NAND device. This function is used for small page 547 * Send command to NAND device. This function is used for small page
548 * devices (256/512 Bytes per page) 548 * devices (256/512 Bytes per page)
549 */ 549 */
550static void nand_command (struct mtd_info *mtd, unsigned command, int column, int page_addr) 550static void nand_command(struct mtd_info *mtd, unsigned command, int column, int page_addr)
551{ 551{
552 register struct nand_chip *this = mtd->priv; 552 register struct nand_chip *this = mtd->priv;
553 553
@@ -588,11 +588,11 @@ static void nand_command (struct mtd_info *mtd, unsigned command, int column, in
588 this->write_byte(mtd, column); 588 this->write_byte(mtd, column);
589 } 589 }
590 if (page_addr != -1) { 590 if (page_addr != -1) {
591 this->write_byte(mtd, (unsigned char) (page_addr & 0xff)); 591 this->write_byte(mtd, (unsigned char)(page_addr & 0xff));
592 this->write_byte(mtd, (unsigned char) ((page_addr >> 8) & 0xff)); 592 this->write_byte(mtd, (unsigned char)((page_addr >> 8) & 0xff));
593 /* One more address cycle for devices > 32MiB */ 593 /* One more address cycle for devices > 32MiB */
594 if (this->chipsize > (32 << 20)) 594 if (this->chipsize > (32 << 20))
595 this->write_byte(mtd, (unsigned char) ((page_addr >> 16) & 0x0f)); 595 this->write_byte(mtd, (unsigned char)((page_addr >> 16) & 0x0f));
596 } 596 }
597 /* Latch in address */ 597 /* Latch in address */
598 this->hwcontrol(mtd, NAND_CTL_CLRALE); 598 this->hwcontrol(mtd, NAND_CTL_CLRALE);
@@ -601,7 +601,7 @@ static void nand_command (struct mtd_info *mtd, unsigned command, int column, in
601 /* 601 /*
602 * program and erase have their own busy handlers 602 * program and erase have their own busy handlers
603 * status and sequential in needs no delay 603 * status and sequential in needs no delay
604 */ 604 */
605 switch (command) { 605 switch (command) {
606 606
607 case NAND_CMD_PAGEPROG: 607 case NAND_CMD_PAGEPROG:
@@ -618,23 +618,23 @@ static void nand_command (struct mtd_info *mtd, unsigned command, int column, in
618 this->hwcontrol(mtd, NAND_CTL_SETCLE); 618 this->hwcontrol(mtd, NAND_CTL_SETCLE);
619 this->write_byte(mtd, NAND_CMD_STATUS); 619 this->write_byte(mtd, NAND_CMD_STATUS);
620 this->hwcontrol(mtd, NAND_CTL_CLRCLE); 620 this->hwcontrol(mtd, NAND_CTL_CLRCLE);
621 while ( !(this->read_byte(mtd) & NAND_STATUS_READY)); 621 while (!(this->read_byte(mtd) & NAND_STATUS_READY)) ;
622 return; 622 return;
623 623
624 /* This applies to read commands */ 624 /* This applies to read commands */
625 default: 625 default:
626 /* 626 /*
627 * If we don't have access to the busy pin, we apply the given 627 * If we don't have access to the busy pin, we apply the given
628 * command delay 628 * command delay
629 */ 629 */
630 if (!this->dev_ready) { 630 if (!this->dev_ready) {
631 udelay (this->chip_delay); 631 udelay(this->chip_delay);
632 return; 632 return;
633 } 633 }
634 } 634 }
635 /* Apply this short delay always to ensure that we do wait tWB in 635 /* Apply this short delay always to ensure that we do wait tWB in
636 * any case on any machine. */ 636 * any case on any machine. */
637 ndelay (100); 637 ndelay(100);
638 638
639 nand_wait_ready(mtd); 639 nand_wait_ready(mtd);
640} 640}
@@ -647,11 +647,11 @@ static void nand_command (struct mtd_info *mtd, unsigned command, int column, in
647 * @page_addr: the page address for this command, -1 if none 647 * @page_addr: the page address for this command, -1 if none
648 * 648 *
649 * Send command to NAND device. This is the version for the new large page devices 649 * Send command to NAND device. This is the version for the new large page devices
650 * We dont have the seperate regions as we have in the small page devices. 650 * We dont have the separate regions as we have in the small page devices.
651 * We must emulate NAND_CMD_READOOB to keep the code compatible. 651 * We must emulate NAND_CMD_READOOB to keep the code compatible.
652 * 652 *
653 */ 653 */
654static void nand_command_lp (struct mtd_info *mtd, unsigned command, int column, int page_addr) 654static void nand_command_lp(struct mtd_info *mtd, unsigned command, int column, int page_addr)
655{ 655{
656 register struct nand_chip *this = mtd->priv; 656 register struct nand_chip *this = mtd->priv;
657 657
@@ -661,7 +661,6 @@ static void nand_command_lp (struct mtd_info *mtd, unsigned command, int column,
661 command = NAND_CMD_READ0; 661 command = NAND_CMD_READ0;
662 } 662 }
663 663
664
665 /* Begin command latch cycle */ 664 /* Begin command latch cycle */
666 this->hwcontrol(mtd, NAND_CTL_SETCLE); 665 this->hwcontrol(mtd, NAND_CTL_SETCLE);
667 /* Write out the command to the device. */ 666 /* Write out the command to the device. */
@@ -681,11 +680,11 @@ static void nand_command_lp (struct mtd_info *mtd, unsigned command, int column,
681 this->write_byte(mtd, column >> 8); 680 this->write_byte(mtd, column >> 8);
682 } 681 }
683 if (page_addr != -1) { 682 if (page_addr != -1) {
684 this->write_byte(mtd, (unsigned char) (page_addr & 0xff)); 683 this->write_byte(mtd, (unsigned char)(page_addr & 0xff));
685 this->write_byte(mtd, (unsigned char) ((page_addr >> 8) & 0xff)); 684 this->write_byte(mtd, (unsigned char)((page_addr >> 8) & 0xff));
686 /* One more address cycle for devices > 128MiB */ 685 /* One more address cycle for devices > 128MiB */
687 if (this->chipsize > (128 << 20)) 686 if (this->chipsize > (128 << 20))
688 this->write_byte(mtd, (unsigned char) ((page_addr >> 16) & 0xff)); 687 this->write_byte(mtd, (unsigned char)((page_addr >> 16) & 0xff));
689 } 688 }
690 /* Latch in address */ 689 /* Latch in address */
691 this->hwcontrol(mtd, NAND_CTL_CLRALE); 690 this->hwcontrol(mtd, NAND_CTL_CLRALE);
@@ -706,9 +705,9 @@ static void nand_command_lp (struct mtd_info *mtd, unsigned command, int column,
706 case NAND_CMD_DEPLETE1: 705 case NAND_CMD_DEPLETE1:
707 return; 706 return;
708 707
709 /* 708 /*
710 * read error status commands require only a short delay 709 * read error status commands require only a short delay
711 */ 710 */
712 case NAND_CMD_STATUS_ERROR: 711 case NAND_CMD_STATUS_ERROR:
713 case NAND_CMD_STATUS_ERROR0: 712 case NAND_CMD_STATUS_ERROR0:
714 case NAND_CMD_STATUS_ERROR1: 713 case NAND_CMD_STATUS_ERROR1:
@@ -724,7 +723,7 @@ static void nand_command_lp (struct mtd_info *mtd, unsigned command, int column,
724 this->hwcontrol(mtd, NAND_CTL_SETCLE); 723 this->hwcontrol(mtd, NAND_CTL_SETCLE);
725 this->write_byte(mtd, NAND_CMD_STATUS); 724 this->write_byte(mtd, NAND_CMD_STATUS);
726 this->hwcontrol(mtd, NAND_CTL_CLRCLE); 725 this->hwcontrol(mtd, NAND_CTL_CLRCLE);
727 while ( !(this->read_byte(mtd) & NAND_STATUS_READY)); 726 while (!(this->read_byte(mtd) & NAND_STATUS_READY)) ;
728 return; 727 return;
729 728
730 case NAND_CMD_READ0: 729 case NAND_CMD_READ0:
@@ -736,21 +735,21 @@ static void nand_command_lp (struct mtd_info *mtd, unsigned command, int column,
736 this->hwcontrol(mtd, NAND_CTL_CLRCLE); 735 this->hwcontrol(mtd, NAND_CTL_CLRCLE);
737 /* Fall through into ready check */ 736 /* Fall through into ready check */
738 737
739 /* This applies to read commands */ 738 /* This applies to read commands */
740 default: 739 default:
741 /* 740 /*
742 * If we don't have access to the busy pin, we apply the given 741 * If we don't have access to the busy pin, we apply the given
743 * command delay 742 * command delay
744 */ 743 */
745 if (!this->dev_ready) { 744 if (!this->dev_ready) {
746 udelay (this->chip_delay); 745 udelay(this->chip_delay);
747 return; 746 return;
748 } 747 }
749 } 748 }
750 749
751 /* Apply this short delay always to ensure that we do wait tWB in 750 /* Apply this short delay always to ensure that we do wait tWB in
752 * any case on any machine. */ 751 * any case on any machine. */
753 ndelay (100); 752 ndelay(100);
754 753
755 nand_wait_ready(mtd); 754 nand_wait_ready(mtd);
756} 755}
@@ -763,16 +762,16 @@ static void nand_command_lp (struct mtd_info *mtd, unsigned command, int column,
763 * 762 *
764 * Get the device and lock it for exclusive access 763 * Get the device and lock it for exclusive access
765 */ 764 */
766static int nand_get_device (struct nand_chip *this, struct mtd_info *mtd, int new_state) 765static int nand_get_device(struct nand_chip *this, struct mtd_info *mtd, int new_state)
767{ 766{
768 struct nand_chip *active; 767 struct nand_chip *active;
769 spinlock_t *lock; 768 spinlock_t *lock;
770 wait_queue_head_t *wq; 769 wait_queue_head_t *wq;
771 DECLARE_WAITQUEUE (wait, current); 770 DECLARE_WAITQUEUE(wait, current);
772 771
773 lock = (this->controller) ? &this->controller->lock : &this->chip_lock; 772 lock = (this->controller) ? &this->controller->lock : &this->chip_lock;
774 wq = (this->controller) ? &this->controller->wq : &this->wq; 773 wq = (this->controller) ? &this->controller->wq : &this->wq;
775retry: 774 retry:
776 active = this; 775 active = this;
777 spin_lock(lock); 776 spin_lock(lock);
778 777
@@ -814,24 +813,24 @@ retry:
814static int nand_wait(struct mtd_info *mtd, struct nand_chip *this, int state) 813static int nand_wait(struct mtd_info *mtd, struct nand_chip *this, int state)
815{ 814{
816 815
817 unsigned long timeo = jiffies; 816 unsigned long timeo = jiffies;
818 int status; 817 int status;
819 818
820 if (state == FL_ERASING) 819 if (state == FL_ERASING)
821 timeo += (HZ * 400) / 1000; 820 timeo += (HZ * 400) / 1000;
822 else 821 else
823 timeo += (HZ * 20) / 1000; 822 timeo += (HZ * 20) / 1000;
824 823
825 led_trigger_event(nand_led_trigger, LED_FULL); 824 led_trigger_event(nand_led_trigger, LED_FULL);
826 825
827 /* Apply this short delay always to ensure that we do wait tWB in 826 /* Apply this short delay always to ensure that we do wait tWB in
828 * any case on any machine. */ 827 * any case on any machine. */
829 ndelay (100); 828 ndelay(100);
830 829
831 if ((state == FL_ERASING) && (this->options & NAND_IS_AND)) 830 if ((state == FL_ERASING) && (this->options & NAND_IS_AND))
832 this->cmdfunc (mtd, NAND_CMD_STATUS_MULTI, -1, -1); 831 this->cmdfunc(mtd, NAND_CMD_STATUS_MULTI, -1, -1);
833 else 832 else
834 this->cmdfunc (mtd, NAND_CMD_STATUS, -1, -1); 833 this->cmdfunc(mtd, NAND_CMD_STATUS, -1, -1);
835 834
836 while (time_before(jiffies, timeo)) { 835 while (time_before(jiffies, timeo)) {
837 /* Check, if we were interrupted */ 836 /* Check, if we were interrupted */
@@ -849,7 +848,7 @@ static int nand_wait(struct mtd_info *mtd, struct nand_chip *this, int state)
849 } 848 }
850 led_trigger_event(nand_led_trigger, LED_OFF); 849 led_trigger_event(nand_led_trigger, LED_OFF);
851 850
852 status = (int) this->read_byte(mtd); 851 status = (int)this->read_byte(mtd);
853 return status; 852 return status;
854} 853}
855 854
@@ -868,31 +867,31 @@ static int nand_wait(struct mtd_info *mtd, struct nand_chip *this, int state)
868 * 867 *
869 * Cached programming is not supported yet. 868 * Cached programming is not supported yet.
870 */ 869 */
871static int nand_write_page (struct mtd_info *mtd, struct nand_chip *this, int page, 870static int nand_write_page(struct mtd_info *mtd, struct nand_chip *this, int page,
872 u_char *oob_buf, struct nand_oobinfo *oobsel, int cached) 871 u_char *oob_buf, struct nand_oobinfo *oobsel, int cached)
873{ 872{
874 int i, status; 873 int i, status;
875 u_char ecc_code[32]; 874 u_char ecc_code[32];
876 int eccmode = oobsel->useecc ? this->eccmode : NAND_ECC_NONE; 875 int eccmode = oobsel->useecc ? this->eccmode : NAND_ECC_NONE;
877 int *oob_config = oobsel->eccpos; 876 int *oob_config = oobsel->eccpos;
878 int datidx = 0, eccidx = 0, eccsteps = this->eccsteps; 877 int datidx = 0, eccidx = 0, eccsteps = this->eccsteps;
879 int eccbytes = 0; 878 int eccbytes = 0;
880 879
881 /* FIXME: Enable cached programming */ 880 /* FIXME: Enable cached programming */
882 cached = 0; 881 cached = 0;
883 882
884 /* Send command to begin auto page programming */ 883 /* Send command to begin auto page programming */
885 this->cmdfunc (mtd, NAND_CMD_SEQIN, 0x00, page); 884 this->cmdfunc(mtd, NAND_CMD_SEQIN, 0x00, page);
886 885
887 /* Write out complete page of data, take care of eccmode */ 886 /* Write out complete page of data, take care of eccmode */
888 switch (eccmode) { 887 switch (eccmode) {
889 /* No ecc, write all */ 888 /* No ecc, write all */
890 case NAND_ECC_NONE: 889 case NAND_ECC_NONE:
891 printk (KERN_WARNING "Writing data without ECC to NAND-FLASH is not recommended\n"); 890 printk(KERN_WARNING "Writing data without ECC to NAND-FLASH is not recommended\n");
892 this->write_buf(mtd, this->data_poi, mtd->oobblock); 891 this->write_buf(mtd, this->data_poi, mtd->oobblock);
893 break; 892 break;
894 893
895 /* Software ecc 3/256, write all */ 894 /* Software ecc 3/256, write all */
896 case NAND_ECC_SOFT: 895 case NAND_ECC_SOFT:
897 for (; eccsteps; eccsteps--) { 896 for (; eccsteps; eccsteps--) {
898 this->calculate_ecc(mtd, &this->data_poi[datidx], ecc_code); 897 this->calculate_ecc(mtd, &this->data_poi[datidx], ecc_code);
@@ -928,11 +927,11 @@ static int nand_write_page (struct mtd_info *mtd, struct nand_chip *this, int pa
928 this->write_buf(mtd, oob_buf, mtd->oobsize); 927 this->write_buf(mtd, oob_buf, mtd->oobsize);
929 928
930 /* Send command to actually program the data */ 929 /* Send command to actually program the data */
931 this->cmdfunc (mtd, cached ? NAND_CMD_CACHEDPROG : NAND_CMD_PAGEPROG, -1, -1); 930 this->cmdfunc(mtd, cached ? NAND_CMD_CACHEDPROG : NAND_CMD_PAGEPROG, -1, -1);
932 931
933 if (!cached) { 932 if (!cached) {
934 /* call wait ready function */ 933 /* call wait ready function */
935 status = this->waitfunc (mtd, this, FL_WRITING); 934 status = this->waitfunc(mtd, this, FL_WRITING);
936 935
937 /* See if operation failed and additional status checks are available */ 936 /* See if operation failed and additional status checks are available */
938 if ((status & NAND_STATUS_FAIL) && (this->errstat)) { 937 if ((status & NAND_STATUS_FAIL) && (this->errstat)) {
@@ -941,12 +940,12 @@ static int nand_write_page (struct mtd_info *mtd, struct nand_chip *this, int pa
941 940
942 /* See if device thinks it succeeded */ 941 /* See if device thinks it succeeded */
943 if (status & NAND_STATUS_FAIL) { 942 if (status & NAND_STATUS_FAIL) {
944 DEBUG (MTD_DEBUG_LEVEL0, "%s: " "Failed write, page 0x%08x, ", __FUNCTION__, page); 943 DEBUG(MTD_DEBUG_LEVEL0, "%s: " "Failed write, page 0x%08x, ", __FUNCTION__, page);
945 return -EIO; 944 return -EIO;
946 } 945 }
947 } else { 946 } else {
948 /* FIXME: Implement cached programming ! */ 947 /* FIXME: Implement cached programming ! */
949 /* wait until cache is ready*/ 948 /* wait until cache is ready */
950 // status = this->waitfunc (mtd, this, FL_CACHEDRPG); 949 // status = this->waitfunc (mtd, this, FL_CACHEDRPG);
951 } 950 }
952 return 0; 951 return 0;
@@ -972,24 +971,24 @@ static int nand_write_page (struct mtd_info *mtd, struct nand_chip *this, int pa
972 * the error later when the ECC page check fails, but we would rather catch 971 * the error later when the ECC page check fails, but we would rather catch
973 * it early in the page write stage. Better to write no data than invalid data. 972 * it early in the page write stage. Better to write no data than invalid data.
974 */ 973 */
975static int nand_verify_pages (struct mtd_info *mtd, struct nand_chip *this, int page, int numpages, 974static int nand_verify_pages(struct mtd_info *mtd, struct nand_chip *this, int page, int numpages,
976 u_char *oob_buf, struct nand_oobinfo *oobsel, int chipnr, int oobmode) 975 u_char *oob_buf, struct nand_oobinfo *oobsel, int chipnr, int oobmode)
977{ 976{
978 int i, j, datidx = 0, oobofs = 0, res = -EIO; 977 int i, j, datidx = 0, oobofs = 0, res = -EIO;
979 int eccsteps = this->eccsteps; 978 int eccsteps = this->eccsteps;
980 int hweccbytes; 979 int hweccbytes;
981 u_char oobdata[64]; 980 u_char oobdata[64];
982 981
983 hweccbytes = (this->options & NAND_HWECC_SYNDROME) ? (oobsel->eccbytes / eccsteps) : 0; 982 hweccbytes = (this->options & NAND_HWECC_SYNDROME) ? (oobsel->eccbytes / eccsteps) : 0;
984 983
985 /* Send command to read back the first page */ 984 /* Send command to read back the first page */
986 this->cmdfunc (mtd, NAND_CMD_READ0, 0, page); 985 this->cmdfunc(mtd, NAND_CMD_READ0, 0, page);
987 986
988 for(;;) { 987 for (;;) {
989 for (j = 0; j < eccsteps; j++) { 988 for (j = 0; j < eccsteps; j++) {
990 /* Loop through and verify the data */ 989 /* Loop through and verify the data */
991 if (this->verify_buf(mtd, &this->data_poi[datidx], mtd->eccsize)) { 990 if (this->verify_buf(mtd, &this->data_poi[datidx], mtd->eccsize)) {
992 DEBUG (MTD_DEBUG_LEVEL0, "%s: " "Failed write verify, page 0x%08x ", __FUNCTION__, page); 991 DEBUG(MTD_DEBUG_LEVEL0, "%s: " "Failed write verify, page 0x%08x ", __FUNCTION__, page);
993 goto out; 992 goto out;
994 } 993 }
995 datidx += mtd->eccsize; 994 datidx += mtd->eccsize;
@@ -997,7 +996,7 @@ static int nand_verify_pages (struct mtd_info *mtd, struct nand_chip *this, int
997 if (!hweccbytes) 996 if (!hweccbytes)
998 continue; 997 continue;
999 if (this->verify_buf(mtd, &this->oob_buf[oobofs], hweccbytes)) { 998 if (this->verify_buf(mtd, &this->oob_buf[oobofs], hweccbytes)) {
1000 DEBUG (MTD_DEBUG_LEVEL0, "%s: " "Failed write verify, page 0x%08x ", __FUNCTION__, page); 999 DEBUG(MTD_DEBUG_LEVEL0, "%s: " "Failed write verify, page 0x%08x ", __FUNCTION__, page);
1001 goto out; 1000 goto out;
1002 } 1001 }
1003 oobofs += hweccbytes; 1002 oobofs += hweccbytes;
@@ -1008,7 +1007,7 @@ static int nand_verify_pages (struct mtd_info *mtd, struct nand_chip *this, int
1008 */ 1007 */
1009 if (oobmode) { 1008 if (oobmode) {
1010 if (this->verify_buf(mtd, &oob_buf[oobofs], mtd->oobsize - hweccbytes * eccsteps)) { 1009 if (this->verify_buf(mtd, &oob_buf[oobofs], mtd->oobsize - hweccbytes * eccsteps)) {
1011 DEBUG (MTD_DEBUG_LEVEL0, "%s: " "Failed write verify, page 0x%08x ", __FUNCTION__, page); 1010 DEBUG(MTD_DEBUG_LEVEL0, "%s: " "Failed write verify, page 0x%08x ", __FUNCTION__, page);
1012 goto out; 1011 goto out;
1013 } 1012 }
1014 } else { 1013 } else {
@@ -1020,10 +1019,9 @@ static int nand_verify_pages (struct mtd_info *mtd, struct nand_chip *this, int
1020 1019
1021 for (i = 0; i < ecccnt; i++) { 1020 for (i = 0; i < ecccnt; i++) {
1022 int idx = oobsel->eccpos[i]; 1021 int idx = oobsel->eccpos[i];
1023 if (oobdata[idx] != oob_buf[oobofs + idx] ) { 1022 if (oobdata[idx] != oob_buf[oobofs + idx]) {
1024 DEBUG (MTD_DEBUG_LEVEL0, 1023 DEBUG(MTD_DEBUG_LEVEL0, "%s: Failed ECC write verify, page 0x%08x, %6i bytes were succesful\n",
1025 "%s: Failed ECC write " 1024 __FUNCTION__, page, i);
1026 "verify, page 0x%08x, " "%6i bytes were succesful\n", __FUNCTION__, page, i);
1027 goto out; 1025 goto out;
1028 } 1026 }
1029 } 1027 }
@@ -1039,9 +1037,9 @@ static int nand_verify_pages (struct mtd_info *mtd, struct nand_chip *this, int
1039 * is marked as NOAUTOINCR by the board driver. 1037 * is marked as NOAUTOINCR by the board driver.
1040 * Do this also before returning, so the chip is 1038 * Do this also before returning, so the chip is
1041 * ready for the next command. 1039 * ready for the next command.
1042 */ 1040 */
1043 if (!this->dev_ready) 1041 if (!this->dev_ready)
1044 udelay (this->chip_delay); 1042 udelay(this->chip_delay);
1045 else 1043 else
1046 nand_wait_ready(mtd); 1044 nand_wait_ready(mtd);
1047 1045
@@ -1049,17 +1047,16 @@ static int nand_verify_pages (struct mtd_info *mtd, struct nand_chip *this, int
1049 if (!numpages) 1047 if (!numpages)
1050 return 0; 1048 return 0;
1051 1049
1052
1053 /* Check, if the chip supports auto page increment */ 1050 /* Check, if the chip supports auto page increment */
1054 if (!NAND_CANAUTOINCR(this)) 1051 if (!NAND_CANAUTOINCR(this))
1055 this->cmdfunc (mtd, NAND_CMD_READ0, 0x00, page); 1052 this->cmdfunc(mtd, NAND_CMD_READ0, 0x00, page);
1056 } 1053 }
1057 /* 1054 /*
1058 * Terminate the read command. We come here in case of an error 1055 * Terminate the read command. We come here in case of an error
1059 * So we must issue a reset command. 1056 * So we must issue a reset command.
1060 */ 1057 */
1061out: 1058 out:
1062 this->cmdfunc (mtd, NAND_CMD_RESET, -1, -1); 1059 this->cmdfunc(mtd, NAND_CMD_RESET, -1, -1);
1063 return res; 1060 return res;
1064} 1061}
1065#endif 1062#endif
@@ -1075,12 +1072,11 @@ out:
1075 * This function simply calls nand_do_read_ecc with oob buffer and oobsel = NULL 1072 * This function simply calls nand_do_read_ecc with oob buffer and oobsel = NULL
1076 * and flags = 0xff 1073 * and flags = 0xff
1077 */ 1074 */
1078static int nand_read (struct mtd_info *mtd, loff_t from, size_t len, size_t * retlen, u_char * buf) 1075static int nand_read(struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf)
1079{ 1076{
1080 return nand_do_read_ecc (mtd, from, len, retlen, buf, NULL, &mtd->oobinfo, 0xff); 1077 return nand_do_read_ecc(mtd, from, len, retlen, buf, NULL, &mtd->oobinfo, 0xff);
1081} 1078}
1082 1079
1083
1084/** 1080/**
1085 * nand_read_ecc - [MTD Interface] MTD compability function for nand_do_read_ecc 1081 * nand_read_ecc - [MTD Interface] MTD compability function for nand_do_read_ecc
1086 * @mtd: MTD device structure 1082 * @mtd: MTD device structure
@@ -1093,8 +1089,8 @@ static int nand_read (struct mtd_info *mtd, loff_t from, size_t len, size_t * re
1093 * 1089 *
1094 * This function simply calls nand_do_read_ecc with flags = 0xff 1090 * This function simply calls nand_do_read_ecc with flags = 0xff
1095 */ 1091 */
1096static int nand_read_ecc (struct mtd_info *mtd, loff_t from, size_t len, 1092static int nand_read_ecc(struct mtd_info *mtd, loff_t from, size_t len,
1097 size_t * retlen, u_char * buf, u_char * oob_buf, struct nand_oobinfo *oobsel) 1093 size_t *retlen, u_char *buf, u_char *oob_buf, struct nand_oobinfo *oobsel)
1098{ 1094{
1099 /* use userspace supplied oobinfo, if zero */ 1095 /* use userspace supplied oobinfo, if zero */
1100 if (oobsel == NULL) 1096 if (oobsel == NULL)
@@ -1102,7 +1098,6 @@ static int nand_read_ecc (struct mtd_info *mtd, loff_t from, size_t len,
1102 return nand_do_read_ecc(mtd, from, len, retlen, buf, oob_buf, oobsel, 0xff); 1098 return nand_do_read_ecc(mtd, from, len, retlen, buf, oob_buf, oobsel, 0xff);
1103} 1099}
1104 1100
1105
1106/** 1101/**
1107 * nand_do_read_ecc - [MTD Interface] Read data with ECC 1102 * nand_do_read_ecc - [MTD Interface] Read data with ECC
1108 * @mtd: MTD device structure 1103 * @mtd: MTD device structure
@@ -1119,9 +1114,8 @@ static int nand_read_ecc (struct mtd_info *mtd, loff_t from, size_t len,
1119 * 1114 *
1120 * NAND read with ECC 1115 * NAND read with ECC
1121 */ 1116 */
1122int nand_do_read_ecc (struct mtd_info *mtd, loff_t from, size_t len, 1117int nand_do_read_ecc(struct mtd_info *mtd, loff_t from, size_t len,
1123 size_t * retlen, u_char * buf, u_char * oob_buf, 1118 size_t *retlen, u_char *buf, u_char *oob_buf, struct nand_oobinfo *oobsel, int flags)
1124 struct nand_oobinfo *oobsel, int flags)
1125{ 1119{
1126 1120
1127 int i, j, col, realpage, page, end, ecc, chipnr, sndcmd = 1; 1121 int i, j, col, realpage, page, end, ecc, chipnr, sndcmd = 1;
@@ -1130,26 +1124,25 @@ int nand_do_read_ecc (struct mtd_info *mtd, loff_t from, size_t len,
1130 u_char *data_poi, *oob_data = oob_buf; 1124 u_char *data_poi, *oob_data = oob_buf;
1131 u_char ecc_calc[32]; 1125 u_char ecc_calc[32];
1132 u_char ecc_code[32]; 1126 u_char ecc_code[32];
1133 int eccmode, eccsteps; 1127 int eccmode, eccsteps;
1134 int *oob_config, datidx; 1128 int *oob_config, datidx;
1135 int blockcheck = (1 << (this->phys_erase_shift - this->page_shift)) - 1; 1129 int blockcheck = (1 << (this->phys_erase_shift - this->page_shift)) - 1;
1136 int eccbytes; 1130 int eccbytes;
1137 int compareecc = 1; 1131 int compareecc = 1;
1138 int oobreadlen; 1132 int oobreadlen;
1139 1133
1140 1134 DEBUG(MTD_DEBUG_LEVEL3, "nand_read_ecc: from = 0x%08x, len = %i\n", (unsigned int)from, (int)len);
1141 DEBUG (MTD_DEBUG_LEVEL3, "nand_read_ecc: from = 0x%08x, len = %i\n", (unsigned int) from, (int) len);
1142 1135
1143 /* Do not allow reads past end of device */ 1136 /* Do not allow reads past end of device */
1144 if ((from + len) > mtd->size) { 1137 if ((from + len) > mtd->size) {
1145 DEBUG (MTD_DEBUG_LEVEL0, "nand_read_ecc: Attempt read beyond end of device\n"); 1138 DEBUG(MTD_DEBUG_LEVEL0, "nand_read_ecc: Attempt read beyond end of device\n");
1146 *retlen = 0; 1139 *retlen = 0;
1147 return -EINVAL; 1140 return -EINVAL;
1148 } 1141 }
1149 1142
1150 /* Grab the lock and see if the device is available */ 1143 /* Grab the lock and see if the device is available */
1151 if (flags & NAND_GET_DEVICE) 1144 if (flags & NAND_GET_DEVICE)
1152 nand_get_device (this, mtd, FL_READING); 1145 nand_get_device(this, mtd, FL_READING);
1153 1146
1154 /* Autoplace of oob data ? Use the default placement scheme */ 1147 /* Autoplace of oob data ? Use the default placement scheme */
1155 if (oobsel->useecc == MTD_NANDECC_AUTOPLACE) 1148 if (oobsel->useecc == MTD_NANDECC_AUTOPLACE)
@@ -1163,7 +1156,7 @@ int nand_do_read_ecc (struct mtd_info *mtd, loff_t from, size_t len,
1163 this->select_chip(mtd, chipnr); 1156 this->select_chip(mtd, chipnr);
1164 1157
1165 /* First we calculate the starting page */ 1158 /* First we calculate the starting page */
1166 realpage = (int) (from >> this->page_shift); 1159 realpage = (int)(from >> this->page_shift);
1167 page = realpage & this->pagemask; 1160 page = realpage & this->pagemask;
1168 1161
1169 /* Get raw starting column */ 1162 /* Get raw starting column */
@@ -1201,13 +1194,13 @@ int nand_do_read_ecc (struct mtd_info *mtd, loff_t from, size_t len,
1201 if (realpage == this->pagebuf && !oob_buf) { 1194 if (realpage == this->pagebuf && !oob_buf) {
1202 /* aligned read ? */ 1195 /* aligned read ? */
1203 if (aligned) 1196 if (aligned)
1204 memcpy (data_poi, this->data_buf, end); 1197 memcpy(data_poi, this->data_buf, end);
1205 goto readdata; 1198 goto readdata;
1206 } 1199 }
1207 1200
1208 /* Check, if we must send the read command */ 1201 /* Check, if we must send the read command */
1209 if (sndcmd) { 1202 if (sndcmd) {
1210 this->cmdfunc (mtd, NAND_CMD_READ0, 0x00, page); 1203 this->cmdfunc(mtd, NAND_CMD_READ0, 0x00, page);
1211 sndcmd = 0; 1204 sndcmd = 0;
1212 } 1205 }
1213 1206
@@ -1219,24 +1212,26 @@ int nand_do_read_ecc (struct mtd_info *mtd, loff_t from, size_t len,
1219 eccsteps = this->eccsteps; 1212 eccsteps = this->eccsteps;
1220 1213
1221 switch (eccmode) { 1214 switch (eccmode) {
1222 case NAND_ECC_NONE: { /* No ECC, Read in a page */ 1215 case NAND_ECC_NONE:{
1223 static unsigned long lastwhinge = 0; 1216 /* No ECC, Read in a page */
1224 if ((lastwhinge / HZ) != (jiffies / HZ)) { 1217 static unsigned long lastwhinge = 0;
1225 printk (KERN_WARNING "Reading data from NAND FLASH without ECC is not recommended\n"); 1218 if ((lastwhinge / HZ) != (jiffies / HZ)) {
1226 lastwhinge = jiffies; 1219 printk(KERN_WARNING
1220 "Reading data from NAND FLASH without ECC is not recommended\n");
1221 lastwhinge = jiffies;
1222 }
1223 this->read_buf(mtd, data_poi, end);
1224 break;
1227 } 1225 }
1228 this->read_buf(mtd, data_poi, end);
1229 break;
1230 }
1231 1226
1232 case NAND_ECC_SOFT: /* Software ECC 3/256: Read in a page + oob data */ 1227 case NAND_ECC_SOFT: /* Software ECC 3/256: Read in a page + oob data */
1233 this->read_buf(mtd, data_poi, end); 1228 this->read_buf(mtd, data_poi, end);
1234 for (i = 0, datidx = 0; eccsteps; eccsteps--, i+=3, datidx += ecc) 1229 for (i = 0, datidx = 0; eccsteps; eccsteps--, i += 3, datidx += ecc)
1235 this->calculate_ecc(mtd, &data_poi[datidx], &ecc_calc[i]); 1230 this->calculate_ecc(mtd, &data_poi[datidx], &ecc_calc[i]);
1236 break; 1231 break;
1237 1232
1238 default: 1233 default:
1239 for (i = 0, datidx = 0; eccsteps; eccsteps--, i+=eccbytes, datidx += ecc) { 1234 for (i = 0, datidx = 0; eccsteps; eccsteps--, i += eccbytes, datidx += ecc) {
1240 this->enable_hwecc(mtd, NAND_ECC_READ); 1235 this->enable_hwecc(mtd, NAND_ECC_READ);
1241 this->read_buf(mtd, &data_poi[datidx], ecc); 1236 this->read_buf(mtd, &data_poi[datidx], ecc);
1242 1237
@@ -1252,8 +1247,8 @@ int nand_do_read_ecc (struct mtd_info *mtd, loff_t from, size_t len,
1252 * does the error correction on the fly */ 1247 * does the error correction on the fly */
1253 ecc_status = this->correct_data(mtd, &data_poi[datidx], &oob_data[i], &ecc_code[i]); 1248 ecc_status = this->correct_data(mtd, &data_poi[datidx], &oob_data[i], &ecc_code[i]);
1254 if ((ecc_status == -1) || (ecc_status > (flags && 0xff))) { 1249 if ((ecc_status == -1) || (ecc_status > (flags && 0xff))) {
1255 DEBUG (MTD_DEBUG_LEVEL0, "nand_read_ecc: " 1250 DEBUG(MTD_DEBUG_LEVEL0, "nand_read_ecc: "
1256 "Failed ECC read, page 0x%08x on chip %d\n", page, chipnr); 1251 "Failed ECC read, page 0x%08x on chip %d\n", page, chipnr);
1257 ecc_failed++; 1252 ecc_failed++;
1258 } 1253 }
1259 } else { 1254 } else {
@@ -1274,7 +1269,7 @@ int nand_do_read_ecc (struct mtd_info *mtd, loff_t from, size_t len,
1274 for (j = 0; j < oobsel->eccbytes; j++) 1269 for (j = 0; j < oobsel->eccbytes; j++)
1275 ecc_code[j] = oob_data[oob_config[j]]; 1270 ecc_code[j] = oob_data[oob_config[j]];
1276 1271
1277 /* correct data, if neccecary */ 1272 /* correct data, if necessary */
1278 for (i = 0, j = 0, datidx = 0; i < this->eccsteps; i++, datidx += ecc) { 1273 for (i = 0, j = 0, datidx = 0; i < this->eccsteps; i++, datidx += ecc) {
1279 ecc_status = this->correct_data(mtd, &data_poi[datidx], &ecc_code[j], &ecc_calc[j]); 1274 ecc_status = this->correct_data(mtd, &data_poi[datidx], &ecc_code[j], &ecc_calc[j]);
1280 1275
@@ -1291,16 +1286,16 @@ int nand_do_read_ecc (struct mtd_info *mtd, loff_t from, size_t len,
1291 } 1286 }
1292 1287
1293 if ((ecc_status == -1) || (ecc_status > (flags && 0xff))) { 1288 if ((ecc_status == -1) || (ecc_status > (flags && 0xff))) {
1294 DEBUG (MTD_DEBUG_LEVEL0, "nand_read_ecc: " "Failed ECC read, page 0x%08x\n", page); 1289 DEBUG(MTD_DEBUG_LEVEL0, "nand_read_ecc: " "Failed ECC read, page 0x%08x\n", page);
1295 ecc_failed++; 1290 ecc_failed++;
1296 } 1291 }
1297 } 1292 }
1298 1293
1299 readoob: 1294 readoob:
1300 /* check, if we have a fs supplied oob-buffer */ 1295 /* check, if we have a fs supplied oob-buffer */
1301 if (oob_buf) { 1296 if (oob_buf) {
1302 /* without autoplace. Legacy mode used by YAFFS1 */ 1297 /* without autoplace. Legacy mode used by YAFFS1 */
1303 switch(oobsel->useecc) { 1298 switch (oobsel->useecc) {
1304 case MTD_NANDECC_AUTOPLACE: 1299 case MTD_NANDECC_AUTOPLACE:
1305 case MTD_NANDECC_AUTOPL_USR: 1300 case MTD_NANDECC_AUTOPL_USR:
1306 /* Walk through the autoplace chunks */ 1301 /* Walk through the autoplace chunks */
@@ -1313,7 +1308,7 @@ int nand_do_read_ecc (struct mtd_info *mtd, loff_t from, size_t len,
1313 break; 1308 break;
1314 case MTD_NANDECC_PLACE: 1309 case MTD_NANDECC_PLACE:
1315 /* YAFFS1 legacy mode */ 1310 /* YAFFS1 legacy mode */
1316 oob_data += this->eccsteps * sizeof (int); 1311 oob_data += this->eccsteps * sizeof(int);
1317 default: 1312 default:
1318 oob_data += mtd->oobsize; 1313 oob_data += mtd->oobsize;
1319 } 1314 }
@@ -1331,9 +1326,9 @@ int nand_do_read_ecc (struct mtd_info *mtd, loff_t from, size_t len,
1331 * Do this before the AUTOINCR check, so no problems 1326 * Do this before the AUTOINCR check, so no problems
1332 * arise if a chip which does auto increment 1327 * arise if a chip which does auto increment
1333 * is marked as NOAUTOINCR by the board driver. 1328 * is marked as NOAUTOINCR by the board driver.
1334 */ 1329 */
1335 if (!this->dev_ready) 1330 if (!this->dev_ready)
1336 udelay (this->chip_delay); 1331 udelay(this->chip_delay);
1337 else 1332 else
1338 nand_wait_ready(mtd); 1333 nand_wait_ready(mtd);
1339 1334
@@ -1354,7 +1349,7 @@ int nand_do_read_ecc (struct mtd_info *mtd, loff_t from, size_t len,
1354 } 1349 }
1355 /* Check, if the chip supports auto page increment 1350 /* Check, if the chip supports auto page increment
1356 * or if we have hit a block boundary. 1351 * or if we have hit a block boundary.
1357 */ 1352 */
1358 if (!NAND_CANAUTOINCR(this) || !(page & blockcheck)) 1353 if (!NAND_CANAUTOINCR(this) || !(page & blockcheck))
1359 sndcmd = 1; 1354 sndcmd = 1;
1360 } 1355 }
@@ -1382,13 +1377,13 @@ int nand_do_read_ecc (struct mtd_info *mtd, loff_t from, size_t len,
1382 * 1377 *
1383 * NAND read out-of-band data from the spare area 1378 * NAND read out-of-band data from the spare area
1384 */ 1379 */
1385static int nand_read_oob (struct mtd_info *mtd, loff_t from, size_t len, size_t * retlen, u_char * buf) 1380static int nand_read_oob(struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf)
1386{ 1381{
1387 int i, col, page, chipnr; 1382 int i, col, page, chipnr;
1388 struct nand_chip *this = mtd->priv; 1383 struct nand_chip *this = mtd->priv;
1389 int blockcheck = (1 << (this->phys_erase_shift - this->page_shift)) - 1; 1384 int blockcheck = (1 << (this->phys_erase_shift - this->page_shift)) - 1;
1390 1385
1391 DEBUG (MTD_DEBUG_LEVEL3, "nand_read_oob: from = 0x%08x, len = %i\n", (unsigned int) from, (int) len); 1386 DEBUG(MTD_DEBUG_LEVEL3, "nand_read_oob: from = 0x%08x, len = %i\n", (unsigned int)from, (int)len);
1392 1387
1393 /* Shift to get page */ 1388 /* Shift to get page */
1394 page = (int)(from >> this->page_shift); 1389 page = (int)(from >> this->page_shift);
@@ -1402,19 +1397,19 @@ static int nand_read_oob (struct mtd_info *mtd, loff_t from, size_t len, size_t
1402 1397
1403 /* Do not allow reads past end of device */ 1398 /* Do not allow reads past end of device */
1404 if ((from + len) > mtd->size) { 1399 if ((from + len) > mtd->size) {
1405 DEBUG (MTD_DEBUG_LEVEL0, "nand_read_oob: Attempt read beyond end of device\n"); 1400 DEBUG(MTD_DEBUG_LEVEL0, "nand_read_oob: Attempt read beyond end of device\n");
1406 *retlen = 0; 1401 *retlen = 0;
1407 return -EINVAL; 1402 return -EINVAL;
1408 } 1403 }
1409 1404
1410 /* Grab the lock and see if the device is available */ 1405 /* Grab the lock and see if the device is available */
1411 nand_get_device (this, mtd , FL_READING); 1406 nand_get_device(this, mtd, FL_READING);
1412 1407
1413 /* Select the NAND device */ 1408 /* Select the NAND device */
1414 this->select_chip(mtd, chipnr); 1409 this->select_chip(mtd, chipnr);
1415 1410
1416 /* Send the read command */ 1411 /* Send the read command */
1417 this->cmdfunc (mtd, NAND_CMD_READOOB, col, page & this->pagemask); 1412 this->cmdfunc(mtd, NAND_CMD_READOOB, col, page & this->pagemask);
1418 /* 1413 /*
1419 * Read the data, if we read more than one page 1414 * Read the data, if we read more than one page
1420 * oob data, let the device transfer the data ! 1415 * oob data, let the device transfer the data !
@@ -1444,16 +1439,16 @@ static int nand_read_oob (struct mtd_info *mtd, loff_t from, size_t len, size_t
1444 * is marked as NOAUTOINCR by the board driver. 1439 * is marked as NOAUTOINCR by the board driver.
1445 */ 1440 */
1446 if (!this->dev_ready) 1441 if (!this->dev_ready)
1447 udelay (this->chip_delay); 1442 udelay(this->chip_delay);
1448 else 1443 else
1449 nand_wait_ready(mtd); 1444 nand_wait_ready(mtd);
1450 1445
1451 /* Check, if the chip supports auto page increment 1446 /* Check, if the chip supports auto page increment
1452 * or if we have hit a block boundary. 1447 * or if we have hit a block boundary.
1453 */ 1448 */
1454 if (!NAND_CANAUTOINCR(this) || !(page & blockcheck)) { 1449 if (!NAND_CANAUTOINCR(this) || !(page & blockcheck)) {
1455 /* For subsequent page reads set offset to 0 */ 1450 /* For subsequent page reads set offset to 0 */
1456 this->cmdfunc (mtd, NAND_CMD_READOOB, 0x0, page & this->pagemask); 1451 this->cmdfunc(mtd, NAND_CMD_READOOB, 0x0, page & this->pagemask);
1457 } 1452 }
1458 } 1453 }
1459 } 1454 }
@@ -1476,43 +1471,43 @@ static int nand_read_oob (struct mtd_info *mtd, loff_t from, size_t len, size_t
1476 * 1471 *
1477 * Read raw data including oob into buffer 1472 * Read raw data including oob into buffer
1478 */ 1473 */
1479int nand_read_raw (struct mtd_info *mtd, uint8_t *buf, loff_t from, size_t len, size_t ooblen) 1474int nand_read_raw(struct mtd_info *mtd, uint8_t *buf, loff_t from, size_t len, size_t ooblen)
1480{ 1475{
1481 struct nand_chip *this = mtd->priv; 1476 struct nand_chip *this = mtd->priv;
1482 int page = (int) (from >> this->page_shift); 1477 int page = (int)(from >> this->page_shift);
1483 int chip = (int) (from >> this->chip_shift); 1478 int chip = (int)(from >> this->chip_shift);
1484 int sndcmd = 1; 1479 int sndcmd = 1;
1485 int cnt = 0; 1480 int cnt = 0;
1486 int pagesize = mtd->oobblock + mtd->oobsize; 1481 int pagesize = mtd->oobblock + mtd->oobsize;
1487 int blockcheck = (1 << (this->phys_erase_shift - this->page_shift)) - 1; 1482 int blockcheck = (1 << (this->phys_erase_shift - this->page_shift)) - 1;
1488 1483
1489 /* Do not allow reads past end of device */ 1484 /* Do not allow reads past end of device */
1490 if ((from + len) > mtd->size) { 1485 if ((from + len) > mtd->size) {
1491 DEBUG (MTD_DEBUG_LEVEL0, "nand_read_raw: Attempt read beyond end of device\n"); 1486 DEBUG(MTD_DEBUG_LEVEL0, "nand_read_raw: Attempt read beyond end of device\n");
1492 return -EINVAL; 1487 return -EINVAL;
1493 } 1488 }
1494 1489
1495 /* Grab the lock and see if the device is available */ 1490 /* Grab the lock and see if the device is available */
1496 nand_get_device (this, mtd , FL_READING); 1491 nand_get_device(this, mtd, FL_READING);
1497 1492
1498 this->select_chip (mtd, chip); 1493 this->select_chip(mtd, chip);
1499 1494
1500 /* Add requested oob length */ 1495 /* Add requested oob length */
1501 len += ooblen; 1496 len += ooblen;
1502 1497
1503 while (len) { 1498 while (len) {
1504 if (sndcmd) 1499 if (sndcmd)
1505 this->cmdfunc (mtd, NAND_CMD_READ0, 0, page & this->pagemask); 1500 this->cmdfunc(mtd, NAND_CMD_READ0, 0, page & this->pagemask);
1506 sndcmd = 0; 1501 sndcmd = 0;
1507 1502
1508 this->read_buf (mtd, &buf[cnt], pagesize); 1503 this->read_buf(mtd, &buf[cnt], pagesize);
1509 1504
1510 len -= pagesize; 1505 len -= pagesize;
1511 cnt += pagesize; 1506 cnt += pagesize;
1512 page++; 1507 page++;
1513 1508
1514 if (!this->dev_ready) 1509 if (!this->dev_ready)
1515 udelay (this->chip_delay); 1510 udelay(this->chip_delay);
1516 else 1511 else
1517 nand_wait_ready(mtd); 1512 nand_wait_ready(mtd);
1518 1513
@@ -1526,7 +1521,6 @@ int nand_read_raw (struct mtd_info *mtd, uint8_t *buf, loff_t from, size_t len,
1526 return 0; 1521 return 0;
1527} 1522}
1528 1523
1529
1530/** 1524/**
1531 * nand_prepare_oobbuf - [GENERIC] Prepare the out of band buffer 1525 * nand_prepare_oobbuf - [GENERIC] Prepare the out of band buffer
1532 * @mtd: MTD device structure 1526 * @mtd: MTD device structure
@@ -1550,8 +1544,8 @@ int nand_read_raw (struct mtd_info *mtd, uint8_t *buf, loff_t from, size_t len,
1550 * forces the 0xff fill before using the buffer again. 1544 * forces the 0xff fill before using the buffer again.
1551 * 1545 *
1552*/ 1546*/
1553static u_char * nand_prepare_oobbuf (struct mtd_info *mtd, u_char *fsbuf, struct nand_oobinfo *oobsel, 1547static u_char *nand_prepare_oobbuf(struct mtd_info *mtd, u_char *fsbuf, struct nand_oobinfo *oobsel,
1554 int autoplace, int numpages) 1548 int autoplace, int numpages)
1555{ 1549{
1556 struct nand_chip *this = mtd->priv; 1550 struct nand_chip *this = mtd->priv;
1557 int i, len, ofs; 1551 int i, len, ofs;
@@ -1562,8 +1556,7 @@ static u_char * nand_prepare_oobbuf (struct mtd_info *mtd, u_char *fsbuf, struct
1562 1556
1563 /* Check, if the buffer must be filled with ff again */ 1557 /* Check, if the buffer must be filled with ff again */
1564 if (this->oobdirty) { 1558 if (this->oobdirty) {
1565 memset (this->oob_buf, 0xff, 1559 memset(this->oob_buf, 0xff, mtd->oobsize << (this->phys_erase_shift - this->page_shift));
1566 mtd->oobsize << (this->phys_erase_shift - this->page_shift));
1567 this->oobdirty = 0; 1560 this->oobdirty = 0;
1568 } 1561 }
1569 1562
@@ -1578,7 +1571,7 @@ static u_char * nand_prepare_oobbuf (struct mtd_info *mtd, u_char *fsbuf, struct
1578 for (i = 0, len = 0; len < mtd->oobavail; i++) { 1571 for (i = 0, len = 0; len < mtd->oobavail; i++) {
1579 int to = ofs + oobsel->oobfree[i][0]; 1572 int to = ofs + oobsel->oobfree[i][0];
1580 int num = oobsel->oobfree[i][1]; 1573 int num = oobsel->oobfree[i][1];
1581 memcpy (&this->oob_buf[to], fsbuf, num); 1574 memcpy(&this->oob_buf[to], fsbuf, num);
1582 len += num; 1575 len += num;
1583 fsbuf += num; 1576 fsbuf += num;
1584 } 1577 }
@@ -1600,9 +1593,9 @@ static u_char * nand_prepare_oobbuf (struct mtd_info *mtd, u_char *fsbuf, struct
1600 * This function simply calls nand_write_ecc with oob buffer and oobsel = NULL 1593 * This function simply calls nand_write_ecc with oob buffer and oobsel = NULL
1601 * 1594 *
1602*/ 1595*/
1603static int nand_write (struct mtd_info *mtd, loff_t to, size_t len, size_t * retlen, const u_char * buf) 1596static int nand_write(struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen, const u_char *buf)
1604{ 1597{
1605 return (nand_write_ecc (mtd, to, len, retlen, buf, NULL, NULL)); 1598 return (nand_write_ecc(mtd, to, len, retlen, buf, NULL, NULL));
1606} 1599}
1607 1600
1608/** 1601/**
@@ -1617,34 +1610,35 @@ static int nand_write (struct mtd_info *mtd, loff_t to, size_t len, size_t * ret
1617 * 1610 *
1618 * NAND write with ECC 1611 * NAND write with ECC
1619 */ 1612 */
1620static int nand_write_ecc (struct mtd_info *mtd, loff_t to, size_t len, 1613static int nand_write_ecc(struct mtd_info *mtd, loff_t to, size_t len,
1621 size_t * retlen, const u_char * buf, u_char * eccbuf, struct nand_oobinfo *oobsel) 1614 size_t *retlen, const u_char *buf, u_char *eccbuf,
1615 struct nand_oobinfo *oobsel)
1622{ 1616{
1623 int startpage, page, ret = -EIO, oob = 0, written = 0, chipnr; 1617 int startpage, page, ret = -EIO, oob = 0, written = 0, chipnr;
1624 int autoplace = 0, numpages, totalpages; 1618 int autoplace = 0, numpages, totalpages;
1625 struct nand_chip *this = mtd->priv; 1619 struct nand_chip *this = mtd->priv;
1626 u_char *oobbuf, *bufstart; 1620 u_char *oobbuf, *bufstart;
1627 int ppblock = (1 << (this->phys_erase_shift - this->page_shift)); 1621 int ppblock = (1 << (this->phys_erase_shift - this->page_shift));
1628 1622
1629 DEBUG (MTD_DEBUG_LEVEL3, "nand_write_ecc: to = 0x%08x, len = %i\n", (unsigned int) to, (int) len); 1623 DEBUG(MTD_DEBUG_LEVEL3, "nand_write_ecc: to = 0x%08x, len = %i\n", (unsigned int)to, (int)len);
1630 1624
1631 /* Initialize retlen, in case of early exit */ 1625 /* Initialize retlen, in case of early exit */
1632 *retlen = 0; 1626 *retlen = 0;
1633 1627
1634 /* Do not allow write past end of device */ 1628 /* Do not allow write past end of device */
1635 if ((to + len) > mtd->size) { 1629 if ((to + len) > mtd->size) {
1636 DEBUG (MTD_DEBUG_LEVEL0, "nand_write_ecc: Attempt to write past end of page\n"); 1630 DEBUG(MTD_DEBUG_LEVEL0, "nand_write_ecc: Attempt to write past end of page\n");
1637 return -EINVAL; 1631 return -EINVAL;
1638 } 1632 }
1639 1633
1640 /* reject writes, which are not page aligned */ 1634 /* reject writes, which are not page aligned */
1641 if (NOTALIGNED (to) || NOTALIGNED(len)) { 1635 if (NOTALIGNED(to) || NOTALIGNED(len)) {
1642 printk (KERN_NOTICE "nand_write_ecc: Attempt to write not page aligned data\n"); 1636 printk(KERN_NOTICE "nand_write_ecc: Attempt to write not page aligned data\n");
1643 return -EINVAL; 1637 return -EINVAL;
1644 } 1638 }
1645 1639
1646 /* Grab the lock and see if the device is available */ 1640 /* Grab the lock and see if the device is available */
1647 nand_get_device (this, mtd, FL_WRITING); 1641 nand_get_device(this, mtd, FL_WRITING);
1648 1642
1649 /* Calculate chipnr */ 1643 /* Calculate chipnr */
1650 chipnr = (int)(to >> this->chip_shift); 1644 chipnr = (int)(to >> this->chip_shift);
@@ -1669,7 +1663,7 @@ static int nand_write_ecc (struct mtd_info *mtd, loff_t to, size_t len,
1669 1663
1670 /* Setup variables and oob buffer */ 1664 /* Setup variables and oob buffer */
1671 totalpages = len >> this->page_shift; 1665 totalpages = len >> this->page_shift;
1672 page = (int) (to >> this->page_shift); 1666 page = (int)(to >> this->page_shift);
1673 /* Invalidate the page cache, if we write to the cached page */ 1667 /* Invalidate the page cache, if we write to the cached page */
1674 if (page <= this->pagebuf && this->pagebuf < (page + totalpages)) 1668 if (page <= this->pagebuf && this->pagebuf < (page + totalpages))
1675 this->pagebuf = -1; 1669 this->pagebuf = -1;
@@ -1678,22 +1672,22 @@ static int nand_write_ecc (struct mtd_info *mtd, loff_t to, size_t len,
1678 page &= this->pagemask; 1672 page &= this->pagemask;
1679 startpage = page; 1673 startpage = page;
1680 /* Calc number of pages we can write in one go */ 1674 /* Calc number of pages we can write in one go */
1681 numpages = min (ppblock - (startpage & (ppblock - 1)), totalpages); 1675 numpages = min(ppblock - (startpage & (ppblock - 1)), totalpages);
1682 oobbuf = nand_prepare_oobbuf (mtd, eccbuf, oobsel, autoplace, numpages); 1676 oobbuf = nand_prepare_oobbuf(mtd, eccbuf, oobsel, autoplace, numpages);
1683 bufstart = (u_char *)buf; 1677 bufstart = (u_char *) buf;
1684 1678
1685 /* Loop until all data is written */ 1679 /* Loop until all data is written */
1686 while (written < len) { 1680 while (written < len) {
1687 1681
1688 this->data_poi = (u_char*) &buf[written]; 1682 this->data_poi = (u_char *) &buf[written];
1689 /* Write one page. If this is the last page to write 1683 /* Write one page. If this is the last page to write
1690 * or the last page in this block, then use the 1684 * or the last page in this block, then use the
1691 * real pageprogram command, else select cached programming 1685 * real pageprogram command, else select cached programming
1692 * if supported by the chip. 1686 * if supported by the chip.
1693 */ 1687 */
1694 ret = nand_write_page (mtd, this, page, &oobbuf[oob], oobsel, (--numpages > 0)); 1688 ret = nand_write_page(mtd, this, page, &oobbuf[oob], oobsel, (--numpages > 0));
1695 if (ret) { 1689 if (ret) {
1696 DEBUG (MTD_DEBUG_LEVEL0, "nand_write_ecc: write_page failed %d\n", ret); 1690 DEBUG(MTD_DEBUG_LEVEL0, "nand_write_ecc: write_page failed %d\n", ret);
1697 goto out; 1691 goto out;
1698 } 1692 }
1699 /* Next oob page */ 1693 /* Next oob page */
@@ -1709,15 +1703,14 @@ static int nand_write_ecc (struct mtd_info *mtd, loff_t to, size_t len,
1709 /* Have we hit a block boundary ? Then we have to verify and 1703 /* Have we hit a block boundary ? Then we have to verify and
1710 * if verify is ok, we have to setup the oob buffer for 1704 * if verify is ok, we have to setup the oob buffer for
1711 * the next pages. 1705 * the next pages.
1712 */ 1706 */
1713 if (!(page & (ppblock - 1))){ 1707 if (!(page & (ppblock - 1))) {
1714 int ofs; 1708 int ofs;
1715 this->data_poi = bufstart; 1709 this->data_poi = bufstart;
1716 ret = nand_verify_pages (mtd, this, startpage, 1710 ret = nand_verify_pages(mtd, this, startpage, page - startpage,
1717 page - startpage, 1711 oobbuf, oobsel, chipnr, (eccbuf != NULL));
1718 oobbuf, oobsel, chipnr, (eccbuf != NULL));
1719 if (ret) { 1712 if (ret) {
1720 DEBUG (MTD_DEBUG_LEVEL0, "nand_write_ecc: verify_pages failed %d\n", ret); 1713 DEBUG(MTD_DEBUG_LEVEL0, "nand_write_ecc: verify_pages failed %d\n", ret);
1721 goto out; 1714 goto out;
1722 } 1715 }
1723 *retlen = written; 1716 *retlen = written;
@@ -1726,11 +1719,10 @@ static int nand_write_ecc (struct mtd_info *mtd, loff_t to, size_t len,
1726 if (eccbuf) 1719 if (eccbuf)
1727 eccbuf += (page - startpage) * ofs; 1720 eccbuf += (page - startpage) * ofs;
1728 totalpages -= page - startpage; 1721 totalpages -= page - startpage;
1729 numpages = min (totalpages, ppblock); 1722 numpages = min(totalpages, ppblock);
1730 page &= this->pagemask; 1723 page &= this->pagemask;
1731 startpage = page; 1724 startpage = page;
1732 oobbuf = nand_prepare_oobbuf (mtd, eccbuf, oobsel, 1725 oobbuf = nand_prepare_oobbuf(mtd, eccbuf, oobsel, autoplace, numpages);
1733 autoplace, numpages);
1734 oob = 0; 1726 oob = 0;
1735 /* Check, if we cross a chip boundary */ 1727 /* Check, if we cross a chip boundary */
1736 if (!page) { 1728 if (!page) {
@@ -1741,23 +1733,21 @@ static int nand_write_ecc (struct mtd_info *mtd, loff_t to, size_t len,
1741 } 1733 }
1742 } 1734 }
1743 /* Verify the remaining pages */ 1735 /* Verify the remaining pages */
1744cmp: 1736 cmp:
1745 this->data_poi = bufstart; 1737 this->data_poi = bufstart;
1746 ret = nand_verify_pages (mtd, this, startpage, totalpages, 1738 ret = nand_verify_pages(mtd, this, startpage, totalpages, oobbuf, oobsel, chipnr, (eccbuf != NULL));
1747 oobbuf, oobsel, chipnr, (eccbuf != NULL));
1748 if (!ret) 1739 if (!ret)
1749 *retlen = written; 1740 *retlen = written;
1750 else 1741 else
1751 DEBUG (MTD_DEBUG_LEVEL0, "nand_write_ecc: verify_pages failed %d\n", ret); 1742 DEBUG(MTD_DEBUG_LEVEL0, "nand_write_ecc: verify_pages failed %d\n", ret);
1752 1743
1753out: 1744 out:
1754 /* Deselect and wake up anyone waiting on the device */ 1745 /* Deselect and wake up anyone waiting on the device */
1755 nand_release_device(mtd); 1746 nand_release_device(mtd);
1756 1747
1757 return ret; 1748 return ret;
1758} 1749}
1759 1750
1760
1761/** 1751/**
1762 * nand_write_oob - [MTD Interface] NAND write out-of-band 1752 * nand_write_oob - [MTD Interface] NAND write out-of-band
1763 * @mtd: MTD device structure 1753 * @mtd: MTD device structure
@@ -1768,16 +1758,16 @@ out:
1768 * 1758 *
1769 * NAND write out-of-band 1759 * NAND write out-of-band
1770 */ 1760 */
1771static int nand_write_oob (struct mtd_info *mtd, loff_t to, size_t len, size_t * retlen, const u_char * buf) 1761static int nand_write_oob(struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen, const u_char *buf)
1772{ 1762{
1773 int column, page, status, ret = -EIO, chipnr; 1763 int column, page, status, ret = -EIO, chipnr;
1774 struct nand_chip *this = mtd->priv; 1764 struct nand_chip *this = mtd->priv;
1775 1765
1776 DEBUG (MTD_DEBUG_LEVEL3, "nand_write_oob: to = 0x%08x, len = %i\n", (unsigned int) to, (int) len); 1766 DEBUG(MTD_DEBUG_LEVEL3, "nand_write_oob: to = 0x%08x, len = %i\n", (unsigned int)to, (int)len);
1777 1767
1778 /* Shift to get page */ 1768 /* Shift to get page */
1779 page = (int) (to >> this->page_shift); 1769 page = (int)(to >> this->page_shift);
1780 chipnr = (int) (to >> this->chip_shift); 1770 chipnr = (int)(to >> this->chip_shift);
1781 1771
1782 /* Mask to get column */ 1772 /* Mask to get column */
1783 column = to & (mtd->oobsize - 1); 1773 column = to & (mtd->oobsize - 1);
@@ -1787,12 +1777,12 @@ static int nand_write_oob (struct mtd_info *mtd, loff_t to, size_t len, size_t *
1787 1777
1788 /* Do not allow write past end of page */ 1778 /* Do not allow write past end of page */
1789 if ((column + len) > mtd->oobsize) { 1779 if ((column + len) > mtd->oobsize) {
1790 DEBUG (MTD_DEBUG_LEVEL0, "nand_write_oob: Attempt to write past end of page\n"); 1780 DEBUG(MTD_DEBUG_LEVEL0, "nand_write_oob: Attempt to write past end of page\n");
1791 return -EINVAL; 1781 return -EINVAL;
1792 } 1782 }
1793 1783
1794 /* Grab the lock and see if the device is available */ 1784 /* Grab the lock and see if the device is available */
1795 nand_get_device (this, mtd, FL_WRITING); 1785 nand_get_device(this, mtd, FL_WRITING);
1796 1786
1797 /* Select the NAND device */ 1787 /* Select the NAND device */
1798 this->select_chip(mtd, chipnr); 1788 this->select_chip(mtd, chipnr);
@@ -1814,27 +1804,27 @@ static int nand_write_oob (struct mtd_info *mtd, loff_t to, size_t len, size_t *
1814 1804
1815 if (NAND_MUST_PAD(this)) { 1805 if (NAND_MUST_PAD(this)) {
1816 /* Write out desired data */ 1806 /* Write out desired data */
1817 this->cmdfunc (mtd, NAND_CMD_SEQIN, mtd->oobblock, page & this->pagemask); 1807 this->cmdfunc(mtd, NAND_CMD_SEQIN, mtd->oobblock, page & this->pagemask);
1818 /* prepad 0xff for partial programming */ 1808 /* prepad 0xff for partial programming */
1819 this->write_buf(mtd, ffchars, column); 1809 this->write_buf(mtd, ffchars, column);
1820 /* write data */ 1810 /* write data */
1821 this->write_buf(mtd, buf, len); 1811 this->write_buf(mtd, buf, len);
1822 /* postpad 0xff for partial programming */ 1812 /* postpad 0xff for partial programming */
1823 this->write_buf(mtd, ffchars, mtd->oobsize - (len+column)); 1813 this->write_buf(mtd, ffchars, mtd->oobsize - (len + column));
1824 } else { 1814 } else {
1825 /* Write out desired data */ 1815 /* Write out desired data */
1826 this->cmdfunc (mtd, NAND_CMD_SEQIN, mtd->oobblock + column, page & this->pagemask); 1816 this->cmdfunc(mtd, NAND_CMD_SEQIN, mtd->oobblock + column, page & this->pagemask);
1827 /* write data */ 1817 /* write data */
1828 this->write_buf(mtd, buf, len); 1818 this->write_buf(mtd, buf, len);
1829 } 1819 }
1830 /* Send command to program the OOB data */ 1820 /* Send command to program the OOB data */
1831 this->cmdfunc (mtd, NAND_CMD_PAGEPROG, -1, -1); 1821 this->cmdfunc(mtd, NAND_CMD_PAGEPROG, -1, -1);
1832 1822
1833 status = this->waitfunc (mtd, this, FL_WRITING); 1823 status = this->waitfunc(mtd, this, FL_WRITING);
1834 1824
1835 /* See if device thinks it succeeded */ 1825 /* See if device thinks it succeeded */
1836 if (status & NAND_STATUS_FAIL) { 1826 if (status & NAND_STATUS_FAIL) {
1837 DEBUG (MTD_DEBUG_LEVEL0, "nand_write_oob: " "Failed write, page 0x%08x\n", page); 1827 DEBUG(MTD_DEBUG_LEVEL0, "nand_write_oob: " "Failed write, page 0x%08x\n", page);
1838 ret = -EIO; 1828 ret = -EIO;
1839 goto out; 1829 goto out;
1840 } 1830 }
@@ -1843,23 +1833,22 @@ static int nand_write_oob (struct mtd_info *mtd, loff_t to, size_t len, size_t *
1843 1833
1844#ifdef CONFIG_MTD_NAND_VERIFY_WRITE 1834#ifdef CONFIG_MTD_NAND_VERIFY_WRITE
1845 /* Send command to read back the data */ 1835 /* Send command to read back the data */
1846 this->cmdfunc (mtd, NAND_CMD_READOOB, column, page & this->pagemask); 1836 this->cmdfunc(mtd, NAND_CMD_READOOB, column, page & this->pagemask);
1847 1837
1848 if (this->verify_buf(mtd, buf, len)) { 1838 if (this->verify_buf(mtd, buf, len)) {
1849 DEBUG (MTD_DEBUG_LEVEL0, "nand_write_oob: " "Failed write verify, page 0x%08x\n", page); 1839 DEBUG(MTD_DEBUG_LEVEL0, "nand_write_oob: " "Failed write verify, page 0x%08x\n", page);
1850 ret = -EIO; 1840 ret = -EIO;
1851 goto out; 1841 goto out;
1852 } 1842 }
1853#endif 1843#endif
1854 ret = 0; 1844 ret = 0;
1855out: 1845 out:
1856 /* Deselect and wake up anyone waiting on the device */ 1846 /* Deselect and wake up anyone waiting on the device */
1857 nand_release_device(mtd); 1847 nand_release_device(mtd);
1858 1848
1859 return ret; 1849 return ret;
1860} 1850}
1861 1851
1862
1863/** 1852/**
1864 * nand_writev - [MTD Interface] compabilty function for nand_writev_ecc 1853 * nand_writev - [MTD Interface] compabilty function for nand_writev_ecc
1865 * @mtd: MTD device structure 1854 * @mtd: MTD device structure
@@ -1870,10 +1859,10 @@ out:
1870 * 1859 *
1871 * NAND write with kvec. This just calls the ecc function 1860 * NAND write with kvec. This just calls the ecc function
1872 */ 1861 */
1873static int nand_writev (struct mtd_info *mtd, const struct kvec *vecs, unsigned long count, 1862static int nand_writev(struct mtd_info *mtd, const struct kvec *vecs, unsigned long count,
1874 loff_t to, size_t * retlen) 1863 loff_t to, size_t *retlen)
1875{ 1864{
1876 return (nand_writev_ecc (mtd, vecs, count, to, retlen, NULL, NULL)); 1865 return (nand_writev_ecc(mtd, vecs, count, to, retlen, NULL, NULL));
1877} 1866}
1878 1867
1879/** 1868/**
@@ -1888,13 +1877,13 @@ static int nand_writev (struct mtd_info *mtd, const struct kvec *vecs, unsigned
1888 * 1877 *
1889 * NAND write with iovec with ecc 1878 * NAND write with iovec with ecc
1890 */ 1879 */
1891static int nand_writev_ecc (struct mtd_info *mtd, const struct kvec *vecs, unsigned long count, 1880static int nand_writev_ecc(struct mtd_info *mtd, const struct kvec *vecs, unsigned long count,
1892 loff_t to, size_t * retlen, u_char *eccbuf, struct nand_oobinfo *oobsel) 1881 loff_t to, size_t *retlen, u_char *eccbuf, struct nand_oobinfo *oobsel)
1893{ 1882{
1894 int i, page, len, total_len, ret = -EIO, written = 0, chipnr; 1883 int i, page, len, total_len, ret = -EIO, written = 0, chipnr;
1895 int oob, numpages, autoplace = 0, startpage; 1884 int oob, numpages, autoplace = 0, startpage;
1896 struct nand_chip *this = mtd->priv; 1885 struct nand_chip *this = mtd->priv;
1897 int ppblock = (1 << (this->phys_erase_shift - this->page_shift)); 1886 int ppblock = (1 << (this->phys_erase_shift - this->page_shift));
1898 u_char *oobbuf, *bufstart; 1887 u_char *oobbuf, *bufstart;
1899 1888
1900 /* Preset written len for early exit */ 1889 /* Preset written len for early exit */
@@ -1903,28 +1892,27 @@ static int nand_writev_ecc (struct mtd_info *mtd, const struct kvec *vecs, unsig
1903 /* Calculate total length of data */ 1892 /* Calculate total length of data */
1904 total_len = 0; 1893 total_len = 0;
1905 for (i = 0; i < count; i++) 1894 for (i = 0; i < count; i++)
1906 total_len += (int) vecs[i].iov_len; 1895 total_len += (int)vecs[i].iov_len;
1907 1896
1908 DEBUG (MTD_DEBUG_LEVEL3, 1897 DEBUG(MTD_DEBUG_LEVEL3, "nand_writev: to = 0x%08x, len = %i, count = %ld\n", (unsigned int)to, (unsigned int)total_len, count);
1909 "nand_writev: to = 0x%08x, len = %i, count = %ld\n", (unsigned int) to, (unsigned int) total_len, count);
1910 1898
1911 /* Do not allow write past end of page */ 1899 /* Do not allow write past end of page */
1912 if ((to + total_len) > mtd->size) { 1900 if ((to + total_len) > mtd->size) {
1913 DEBUG (MTD_DEBUG_LEVEL0, "nand_writev: Attempted write past end of device\n"); 1901 DEBUG(MTD_DEBUG_LEVEL0, "nand_writev: Attempted write past end of device\n");
1914 return -EINVAL; 1902 return -EINVAL;
1915 } 1903 }
1916 1904
1917 /* reject writes, which are not page aligned */ 1905 /* reject writes, which are not page aligned */
1918 if (NOTALIGNED (to) || NOTALIGNED(total_len)) { 1906 if (NOTALIGNED(to) || NOTALIGNED(total_len)) {
1919 printk (KERN_NOTICE "nand_write_ecc: Attempt to write not page aligned data\n"); 1907 printk(KERN_NOTICE "nand_write_ecc: Attempt to write not page aligned data\n");
1920 return -EINVAL; 1908 return -EINVAL;
1921 } 1909 }
1922 1910
1923 /* Grab the lock and see if the device is available */ 1911 /* Grab the lock and see if the device is available */
1924 nand_get_device (this, mtd, FL_WRITING); 1912 nand_get_device(this, mtd, FL_WRITING);
1925 1913
1926 /* Get the current chip-nr */ 1914 /* Get the current chip-nr */
1927 chipnr = (int) (to >> this->chip_shift); 1915 chipnr = (int)(to >> this->chip_shift);
1928 /* Select the NAND device */ 1916 /* Select the NAND device */
1929 this->select_chip(mtd, chipnr); 1917 this->select_chip(mtd, chipnr);
1930 1918
@@ -1945,7 +1933,7 @@ static int nand_writev_ecc (struct mtd_info *mtd, const struct kvec *vecs, unsig
1945 autoplace = 1; 1933 autoplace = 1;
1946 1934
1947 /* Setup start page */ 1935 /* Setup start page */
1948 page = (int) (to >> this->page_shift); 1936 page = (int)(to >> this->page_shift);
1949 /* Invalidate the page cache, if we write to the cached page */ 1937 /* Invalidate the page cache, if we write to the cached page */
1950 if (page <= this->pagebuf && this->pagebuf < ((to + total_len) >> this->page_shift)) 1938 if (page <= this->pagebuf && this->pagebuf < ((to + total_len) >> this->page_shift))
1951 this->pagebuf = -1; 1939 this->pagebuf = -1;
@@ -1963,9 +1951,9 @@ static int nand_writev_ecc (struct mtd_info *mtd, const struct kvec *vecs, unsig
1963 * out of this iov in one go */ 1951 * out of this iov in one go */
1964 numpages = (vecs->iov_len - len) >> this->page_shift; 1952 numpages = (vecs->iov_len - len) >> this->page_shift;
1965 /* Do not cross block boundaries */ 1953 /* Do not cross block boundaries */
1966 numpages = min (ppblock - (startpage & (ppblock - 1)), numpages); 1954 numpages = min(ppblock - (startpage & (ppblock - 1)), numpages);
1967 oobbuf = nand_prepare_oobbuf (mtd, NULL, oobsel, autoplace, numpages); 1955 oobbuf = nand_prepare_oobbuf(mtd, NULL, oobsel, autoplace, numpages);
1968 bufstart = (u_char *)vecs->iov_base; 1956 bufstart = (u_char *) vecs->iov_base;
1969 bufstart += len; 1957 bufstart += len;
1970 this->data_poi = bufstart; 1958 this->data_poi = bufstart;
1971 oob = 0; 1959 oob = 0;
@@ -1974,8 +1962,8 @@ static int nand_writev_ecc (struct mtd_info *mtd, const struct kvec *vecs, unsig
1974 * then use the real pageprogram command, else select 1962 * then use the real pageprogram command, else select
1975 * cached programming if supported by the chip. 1963 * cached programming if supported by the chip.
1976 */ 1964 */
1977 ret = nand_write_page (mtd, this, page & this->pagemask, 1965 ret = nand_write_page(mtd, this, page & this->pagemask,
1978 &oobbuf[oob], oobsel, i != numpages); 1966 &oobbuf[oob], oobsel, i != numpages);
1979 if (ret) 1967 if (ret)
1980 goto out; 1968 goto out;
1981 this->data_poi += mtd->oobblock; 1969 this->data_poi += mtd->oobblock;
@@ -1984,7 +1972,7 @@ static int nand_writev_ecc (struct mtd_info *mtd, const struct kvec *vecs, unsig
1984 page++; 1972 page++;
1985 } 1973 }
1986 /* Check, if we have to switch to the next tuple */ 1974 /* Check, if we have to switch to the next tuple */
1987 if (len >= (int) vecs->iov_len) { 1975 if (len >= (int)vecs->iov_len) {
1988 vecs++; 1976 vecs++;
1989 len = 0; 1977 len = 0;
1990 count--; 1978 count--;
@@ -1998,7 +1986,7 @@ static int nand_writev_ecc (struct mtd_info *mtd, const struct kvec *vecs, unsig
1998 if (vecs->iov_base != NULL && vecs->iov_len) 1986 if (vecs->iov_base != NULL && vecs->iov_len)
1999 this->data_buf[cnt++] = ((u_char *) vecs->iov_base)[len++]; 1987 this->data_buf[cnt++] = ((u_char *) vecs->iov_base)[len++];
2000 /* Check, if we have to switch to the next tuple */ 1988 /* Check, if we have to switch to the next tuple */
2001 if (len >= (int) vecs->iov_len) { 1989 if (len >= (int)vecs->iov_len) {
2002 vecs++; 1990 vecs++;
2003 len = 0; 1991 len = 0;
2004 count--; 1992 count--;
@@ -2008,16 +1996,15 @@ static int nand_writev_ecc (struct mtd_info *mtd, const struct kvec *vecs, unsig
2008 this->data_poi = this->data_buf; 1996 this->data_poi = this->data_buf;
2009 bufstart = this->data_poi; 1997 bufstart = this->data_poi;
2010 numpages = 1; 1998 numpages = 1;
2011 oobbuf = nand_prepare_oobbuf (mtd, NULL, oobsel, autoplace, numpages); 1999 oobbuf = nand_prepare_oobbuf(mtd, NULL, oobsel, autoplace, numpages);
2012 ret = nand_write_page (mtd, this, page & this->pagemask, 2000 ret = nand_write_page(mtd, this, page & this->pagemask, oobbuf, oobsel, 0);
2013 oobbuf, oobsel, 0);
2014 if (ret) 2001 if (ret)
2015 goto out; 2002 goto out;
2016 page++; 2003 page++;
2017 } 2004 }
2018 2005
2019 this->data_poi = bufstart; 2006 this->data_poi = bufstart;
2020 ret = nand_verify_pages (mtd, this, startpage, numpages, oobbuf, oobsel, chipnr, 0); 2007 ret = nand_verify_pages(mtd, this, startpage, numpages, oobbuf, oobsel, chipnr, 0);
2021 if (ret) 2008 if (ret)
2022 goto out; 2009 goto out;
2023 2010
@@ -2035,7 +2022,7 @@ static int nand_writev_ecc (struct mtd_info *mtd, const struct kvec *vecs, unsig
2035 } 2022 }
2036 } 2023 }
2037 ret = 0; 2024 ret = 0;
2038out: 2025 out:
2039 /* Deselect and wake up anyone waiting on the device */ 2026 /* Deselect and wake up anyone waiting on the device */
2040 nand_release_device(mtd); 2027 nand_release_device(mtd);
2041 2028
@@ -2050,12 +2037,12 @@ out:
2050 * 2037 *
2051 * Standard erase command for NAND chips 2038 * Standard erase command for NAND chips
2052 */ 2039 */
2053static void single_erase_cmd (struct mtd_info *mtd, int page) 2040static void single_erase_cmd(struct mtd_info *mtd, int page)
2054{ 2041{
2055 struct nand_chip *this = mtd->priv; 2042 struct nand_chip *this = mtd->priv;
2056 /* Send commands to erase a block */ 2043 /* Send commands to erase a block */
2057 this->cmdfunc (mtd, NAND_CMD_ERASE1, -1, page); 2044 this->cmdfunc(mtd, NAND_CMD_ERASE1, -1, page);
2058 this->cmdfunc (mtd, NAND_CMD_ERASE2, -1, -1); 2045 this->cmdfunc(mtd, NAND_CMD_ERASE2, -1, -1);
2059} 2046}
2060 2047
2061/** 2048/**
@@ -2066,15 +2053,15 @@ static void single_erase_cmd (struct mtd_info *mtd, int page)
2066 * AND multi block erase command function 2053 * AND multi block erase command function
2067 * Erase 4 consecutive blocks 2054 * Erase 4 consecutive blocks
2068 */ 2055 */
2069static void multi_erase_cmd (struct mtd_info *mtd, int page) 2056static void multi_erase_cmd(struct mtd_info *mtd, int page)
2070{ 2057{
2071 struct nand_chip *this = mtd->priv; 2058 struct nand_chip *this = mtd->priv;
2072 /* Send commands to erase a block */ 2059 /* Send commands to erase a block */
2073 this->cmdfunc (mtd, NAND_CMD_ERASE1, -1, page++); 2060 this->cmdfunc(mtd, NAND_CMD_ERASE1, -1, page++);
2074 this->cmdfunc (mtd, NAND_CMD_ERASE1, -1, page++); 2061 this->cmdfunc(mtd, NAND_CMD_ERASE1, -1, page++);
2075 this->cmdfunc (mtd, NAND_CMD_ERASE1, -1, page++); 2062 this->cmdfunc(mtd, NAND_CMD_ERASE1, -1, page++);
2076 this->cmdfunc (mtd, NAND_CMD_ERASE1, -1, page); 2063 this->cmdfunc(mtd, NAND_CMD_ERASE1, -1, page);
2077 this->cmdfunc (mtd, NAND_CMD_ERASE2, -1, -1); 2064 this->cmdfunc(mtd, NAND_CMD_ERASE2, -1, -1);
2078} 2065}
2079 2066
2080/** 2067/**
@@ -2084,9 +2071,9 @@ static void multi_erase_cmd (struct mtd_info *mtd, int page)
2084 * 2071 *
2085 * Erase one ore more blocks 2072 * Erase one ore more blocks
2086 */ 2073 */
2087static int nand_erase (struct mtd_info *mtd, struct erase_info *instr) 2074static int nand_erase(struct mtd_info *mtd, struct erase_info *instr)
2088{ 2075{
2089 return nand_erase_nand (mtd, instr, 0); 2076 return nand_erase_nand(mtd, instr, 0);
2090} 2077}
2091 2078
2092#define BBT_PAGE_MASK 0xffffff3f 2079#define BBT_PAGE_MASK 0xffffff3f
@@ -2098,7 +2085,7 @@ static int nand_erase (struct mtd_info *mtd, struct erase_info *instr)
2098 * 2085 *
2099 * Erase one ore more blocks 2086 * Erase one ore more blocks
2100 */ 2087 */
2101int nand_erase_nand (struct mtd_info *mtd, struct erase_info *instr, int allowbbt) 2088int nand_erase_nand(struct mtd_info *mtd, struct erase_info *instr, int allowbbt)
2102{ 2089{
2103 int page, len, status, pages_per_block, ret, chipnr; 2090 int page, len, status, pages_per_block, ret, chipnr;
2104 struct nand_chip *this = mtd->priv; 2091 struct nand_chip *this = mtd->priv;
@@ -2107,35 +2094,34 @@ int nand_erase_nand (struct mtd_info *mtd, struct erase_info *instr, int allowbb
2107 /* It is used to see if the current page is in the same */ 2094 /* It is used to see if the current page is in the same */
2108 /* 256 block group and the same bank as the bbt. */ 2095 /* 256 block group and the same bank as the bbt. */
2109 2096
2110 DEBUG (MTD_DEBUG_LEVEL3, 2097 DEBUG(MTD_DEBUG_LEVEL3, "nand_erase: start = 0x%08x, len = %i\n", (unsigned int)instr->addr, (unsigned int)instr->len);
2111 "nand_erase: start = 0x%08x, len = %i\n", (unsigned int) instr->addr, (unsigned int) instr->len);
2112 2098
2113 /* Start address must align on block boundary */ 2099 /* Start address must align on block boundary */
2114 if (instr->addr & ((1 << this->phys_erase_shift) - 1)) { 2100 if (instr->addr & ((1 << this->phys_erase_shift) - 1)) {
2115 DEBUG (MTD_DEBUG_LEVEL0, "nand_erase: Unaligned address\n"); 2101 DEBUG(MTD_DEBUG_LEVEL0, "nand_erase: Unaligned address\n");
2116 return -EINVAL; 2102 return -EINVAL;
2117 } 2103 }
2118 2104
2119 /* Length must align on block boundary */ 2105 /* Length must align on block boundary */
2120 if (instr->len & ((1 << this->phys_erase_shift) - 1)) { 2106 if (instr->len & ((1 << this->phys_erase_shift) - 1)) {
2121 DEBUG (MTD_DEBUG_LEVEL0, "nand_erase: Length not block aligned\n"); 2107 DEBUG(MTD_DEBUG_LEVEL0, "nand_erase: Length not block aligned\n");
2122 return -EINVAL; 2108 return -EINVAL;
2123 } 2109 }
2124 2110
2125 /* Do not allow erase past end of device */ 2111 /* Do not allow erase past end of device */
2126 if ((instr->len + instr->addr) > mtd->size) { 2112 if ((instr->len + instr->addr) > mtd->size) {
2127 DEBUG (MTD_DEBUG_LEVEL0, "nand_erase: Erase past end of device\n"); 2113 DEBUG(MTD_DEBUG_LEVEL0, "nand_erase: Erase past end of device\n");
2128 return -EINVAL; 2114 return -EINVAL;
2129 } 2115 }
2130 2116
2131 instr->fail_addr = 0xffffffff; 2117 instr->fail_addr = 0xffffffff;
2132 2118
2133 /* Grab the lock and see if the device is available */ 2119 /* Grab the lock and see if the device is available */
2134 nand_get_device (this, mtd, FL_ERASING); 2120 nand_get_device(this, mtd, FL_ERASING);
2135 2121
2136 /* Shift to get first page */ 2122 /* Shift to get first page */
2137 page = (int) (instr->addr >> this->page_shift); 2123 page = (int)(instr->addr >> this->page_shift);
2138 chipnr = (int) (instr->addr >> this->chip_shift); 2124 chipnr = (int)(instr->addr >> this->chip_shift);
2139 2125
2140 /* Calculate pages in each block */ 2126 /* Calculate pages in each block */
2141 pages_per_block = 1 << (this->phys_erase_shift - this->page_shift); 2127 pages_per_block = 1 << (this->phys_erase_shift - this->page_shift);
@@ -2146,7 +2132,7 @@ int nand_erase_nand (struct mtd_info *mtd, struct erase_info *instr, int allowbb
2146 /* Check the WP bit */ 2132 /* Check the WP bit */
2147 /* Check, if it is write protected */ 2133 /* Check, if it is write protected */
2148 if (nand_check_wp(mtd)) { 2134 if (nand_check_wp(mtd)) {
2149 DEBUG (MTD_DEBUG_LEVEL0, "nand_erase: Device is write protected!!!\n"); 2135 DEBUG(MTD_DEBUG_LEVEL0, "nand_erase: Device is write protected!!!\n");
2150 instr->state = MTD_ERASE_FAILED; 2136 instr->state = MTD_ERASE_FAILED;
2151 goto erase_exit; 2137 goto erase_exit;
2152 } 2138 }
@@ -2166,7 +2152,7 @@ int nand_erase_nand (struct mtd_info *mtd, struct erase_info *instr, int allowbb
2166 while (len) { 2152 while (len) {
2167 /* Check if we have a bad block, we do not erase bad blocks ! */ 2153 /* Check if we have a bad block, we do not erase bad blocks ! */
2168 if (nand_block_checkbad(mtd, ((loff_t) page) << this->page_shift, 0, allowbbt)) { 2154 if (nand_block_checkbad(mtd, ((loff_t) page) << this->page_shift, 0, allowbbt)) {
2169 printk (KERN_WARNING "nand_erase: attempt to erase a bad block at page 0x%08x\n", page); 2155 printk(KERN_WARNING "nand_erase: attempt to erase a bad block at page 0x%08x\n", page);
2170 instr->state = MTD_ERASE_FAILED; 2156 instr->state = MTD_ERASE_FAILED;
2171 goto erase_exit; 2157 goto erase_exit;
2172 } 2158 }
@@ -2176,9 +2162,9 @@ int nand_erase_nand (struct mtd_info *mtd, struct erase_info *instr, int allowbb
2176 if (page <= this->pagebuf && this->pagebuf < (page + pages_per_block)) 2162 if (page <= this->pagebuf && this->pagebuf < (page + pages_per_block))
2177 this->pagebuf = -1; 2163 this->pagebuf = -1;
2178 2164
2179 this->erase_cmd (mtd, page & this->pagemask); 2165 this->erase_cmd(mtd, page & this->pagemask);
2180 2166
2181 status = this->waitfunc (mtd, this, FL_ERASING); 2167 status = this->waitfunc(mtd, this, FL_ERASING);
2182 2168
2183 /* See if operation failed and additional status checks are available */ 2169 /* See if operation failed and additional status checks are available */
2184 if ((status & NAND_STATUS_FAIL) && (this->errstat)) { 2170 if ((status & NAND_STATUS_FAIL) && (this->errstat)) {
@@ -2187,7 +2173,7 @@ int nand_erase_nand (struct mtd_info *mtd, struct erase_info *instr, int allowbb
2187 2173
2188 /* See if block erase succeeded */ 2174 /* See if block erase succeeded */
2189 if (status & NAND_STATUS_FAIL) { 2175 if (status & NAND_STATUS_FAIL) {
2190 DEBUG (MTD_DEBUG_LEVEL0, "nand_erase: " "Failed erase, page 0x%08x\n", page); 2176 DEBUG(MTD_DEBUG_LEVEL0, "nand_erase: " "Failed erase, page 0x%08x\n", page);
2191 instr->state = MTD_ERASE_FAILED; 2177 instr->state = MTD_ERASE_FAILED;
2192 instr->fail_addr = (page << this->page_shift); 2178 instr->fail_addr = (page << this->page_shift);
2193 goto erase_exit; 2179 goto erase_exit;
@@ -2221,7 +2207,7 @@ int nand_erase_nand (struct mtd_info *mtd, struct erase_info *instr, int allowbb
2221 } 2207 }
2222 instr->state = MTD_ERASE_DONE; 2208 instr->state = MTD_ERASE_DONE;
2223 2209
2224erase_exit: 2210 erase_exit:
2225 2211
2226 ret = instr->state == MTD_ERASE_DONE ? 0 : -EIO; 2212 ret = instr->state == MTD_ERASE_DONE ? 0 : -EIO;
2227 /* Do call back function */ 2213 /* Do call back function */
@@ -2236,9 +2222,9 @@ erase_exit:
2236 for (chipnr = 0; chipnr < this->numchips; chipnr++) { 2222 for (chipnr = 0; chipnr < this->numchips; chipnr++) {
2237 if (rewrite_bbt[chipnr]) { 2223 if (rewrite_bbt[chipnr]) {
2238 /* update the BBT for chip */ 2224 /* update the BBT for chip */
2239 DEBUG (MTD_DEBUG_LEVEL0, "nand_erase_nand: nand_update_bbt (%d:0x%0x 0x%0x)\n", 2225 DEBUG(MTD_DEBUG_LEVEL0, "nand_erase_nand: nand_update_bbt (%d:0x%0x 0x%0x)\n",
2240 chipnr, rewrite_bbt[chipnr], this->bbt_td->pages[chipnr]); 2226 chipnr, rewrite_bbt[chipnr], this->bbt_td->pages[chipnr]);
2241 nand_update_bbt (mtd, rewrite_bbt[chipnr]); 2227 nand_update_bbt(mtd, rewrite_bbt[chipnr]);
2242 } 2228 }
2243 } 2229 }
2244 } 2230 }
@@ -2253,31 +2239,30 @@ erase_exit:
2253 * 2239 *
2254 * Sync is actually a wait for chip ready function 2240 * Sync is actually a wait for chip ready function
2255 */ 2241 */
2256static void nand_sync (struct mtd_info *mtd) 2242static void nand_sync(struct mtd_info *mtd)
2257{ 2243{
2258 struct nand_chip *this = mtd->priv; 2244 struct nand_chip *this = mtd->priv;
2259 2245
2260 DEBUG (MTD_DEBUG_LEVEL3, "nand_sync: called\n"); 2246 DEBUG(MTD_DEBUG_LEVEL3, "nand_sync: called\n");
2261 2247
2262 /* Grab the lock and see if the device is available */ 2248 /* Grab the lock and see if the device is available */
2263 nand_get_device (this, mtd, FL_SYNCING); 2249 nand_get_device(this, mtd, FL_SYNCING);
2264 /* Release it and go back */ 2250 /* Release it and go back */
2265 nand_release_device (mtd); 2251 nand_release_device(mtd);
2266} 2252}
2267 2253
2268
2269/** 2254/**
2270 * nand_block_isbad - [MTD Interface] Check whether the block at the given offset is bad 2255 * nand_block_isbad - [MTD Interface] Check whether the block at the given offset is bad
2271 * @mtd: MTD device structure 2256 * @mtd: MTD device structure
2272 * @ofs: offset relative to mtd start 2257 * @ofs: offset relative to mtd start
2273 */ 2258 */
2274static int nand_block_isbad (struct mtd_info *mtd, loff_t ofs) 2259static int nand_block_isbad(struct mtd_info *mtd, loff_t ofs)
2275{ 2260{
2276 /* Check for invalid offset */ 2261 /* Check for invalid offset */
2277 if (ofs > mtd->size) 2262 if (ofs > mtd->size)
2278 return -EINVAL; 2263 return -EINVAL;
2279 2264
2280 return nand_block_checkbad (mtd, ofs, 1, 0); 2265 return nand_block_checkbad(mtd, ofs, 1, 0);
2281} 2266}
2282 2267
2283/** 2268/**
@@ -2285,17 +2270,17 @@ static int nand_block_isbad (struct mtd_info *mtd, loff_t ofs)
2285 * @mtd: MTD device structure 2270 * @mtd: MTD device structure
2286 * @ofs: offset relative to mtd start 2271 * @ofs: offset relative to mtd start
2287 */ 2272 */
2288static int nand_block_markbad (struct mtd_info *mtd, loff_t ofs) 2273static int nand_block_markbad(struct mtd_info *mtd, loff_t ofs)
2289{ 2274{
2290 struct nand_chip *this = mtd->priv; 2275 struct nand_chip *this = mtd->priv;
2291 int ret; 2276 int ret;
2292 2277
2293 if ((ret = nand_block_isbad(mtd, ofs))) { 2278 if ((ret = nand_block_isbad(mtd, ofs))) {
2294 /* If it was bad already, return success and do nothing. */ 2279 /* If it was bad already, return success and do nothing. */
2295 if (ret > 0) 2280 if (ret > 0)
2296 return 0; 2281 return 0;
2297 return ret; 2282 return ret;
2298 } 2283 }
2299 2284
2300 return this->block_markbad(mtd, ofs); 2285 return this->block_markbad(mtd, ofs);
2301} 2286}
@@ -2308,7 +2293,7 @@ static int nand_suspend(struct mtd_info *mtd)
2308{ 2293{
2309 struct nand_chip *this = mtd->priv; 2294 struct nand_chip *this = mtd->priv;
2310 2295
2311 return nand_get_device (this, mtd, FL_PM_SUSPENDED); 2296 return nand_get_device(this, mtd, FL_PM_SUSPENDED);
2312} 2297}
2313 2298
2314/** 2299/**
@@ -2322,12 +2307,10 @@ static void nand_resume(struct mtd_info *mtd)
2322 if (this->state == FL_PM_SUSPENDED) 2307 if (this->state == FL_PM_SUSPENDED)
2323 nand_release_device(mtd); 2308 nand_release_device(mtd);
2324 else 2309 else
2325 printk(KERN_ERR "resume() called for the chip which is not " 2310 printk(KERN_ERR "resume() called for the chip which is not in suspended state\n");
2326 "in suspended state\n");
2327 2311
2328} 2312}
2329 2313
2330
2331/** 2314/**
2332 * nand_scan - [NAND Interface] Scan for the NAND device 2315 * nand_scan - [NAND Interface] Scan for the NAND device
2333 * @mtd: MTD device structure 2316 * @mtd: MTD device structure
@@ -2340,12 +2323,12 @@ static void nand_resume(struct mtd_info *mtd)
2340 * they are not provided by the board driver 2323 * they are not provided by the board driver
2341 * 2324 *
2342 */ 2325 */
2343int nand_scan (struct mtd_info *mtd, int maxchips) 2326int nand_scan(struct mtd_info *mtd, int maxchips)
2344{ 2327{
2345 int i, nand_maf_id, nand_dev_id, busw, maf_id; 2328 int i, nand_maf_id, nand_dev_id, busw, maf_id;
2346 struct nand_chip *this = mtd->priv; 2329 struct nand_chip *this = mtd->priv;
2347 2330
2348 /* Get buswidth to select the correct functions*/ 2331 /* Get buswidth to select the correct functions */
2349 busw = this->options & NAND_BUSWIDTH_16; 2332 busw = this->options & NAND_BUSWIDTH_16;
2350 2333
2351 /* check for proper chip_delay setup, set 20us if not */ 2334 /* check for proper chip_delay setup, set 20us if not */
@@ -2387,7 +2370,7 @@ int nand_scan (struct mtd_info *mtd, int maxchips)
2387 this->select_chip(mtd, 0); 2370 this->select_chip(mtd, 0);
2388 2371
2389 /* Send the command for reading device ID */ 2372 /* Send the command for reading device ID */
2390 this->cmdfunc (mtd, NAND_CMD_READID, 0x00, -1); 2373 this->cmdfunc(mtd, NAND_CMD_READID, 0x00, -1);
2391 2374
2392 /* Read manufacturer and device IDs */ 2375 /* Read manufacturer and device IDs */
2393 nand_maf_id = this->read_byte(mtd); 2376 nand_maf_id = this->read_byte(mtd);
@@ -2399,7 +2382,8 @@ int nand_scan (struct mtd_info *mtd, int maxchips)
2399 if (nand_dev_id != nand_flash_ids[i].id) 2382 if (nand_dev_id != nand_flash_ids[i].id)
2400 continue; 2383 continue;
2401 2384
2402 if (!mtd->name) mtd->name = nand_flash_ids[i].name; 2385 if (!mtd->name)
2386 mtd->name = nand_flash_ids[i].name;
2403 this->chipsize = nand_flash_ids[i].chipsize << 20; 2387 this->chipsize = nand_flash_ids[i].chipsize << 20;
2404 2388
2405 /* New devices have all the information in additional id bytes */ 2389 /* New devices have all the information in additional id bytes */
@@ -2416,7 +2400,7 @@ int nand_scan (struct mtd_info *mtd, int maxchips)
2416 mtd->oobsize = (8 << (extid & 0x01)) * (mtd->oobblock >> 9); 2400 mtd->oobsize = (8 << (extid & 0x01)) * (mtd->oobblock >> 9);
2417 extid >>= 2; 2401 extid >>= 2;
2418 /* Calc blocksize. Blocksize is multiples of 64KiB */ 2402 /* Calc blocksize. Blocksize is multiples of 64KiB */
2419 mtd->erasesize = (64 * 1024) << (extid & 0x03); 2403 mtd->erasesize = (64 * 1024) << (extid & 0x03);
2420 extid >>= 2; 2404 extid >>= 2;
2421 /* Get buswidth information */ 2405 /* Get buswidth information */
2422 busw = (extid & 0x01) ? NAND_BUSWIDTH_16 : 0; 2406 busw = (extid & 0x01) ? NAND_BUSWIDTH_16 : 0;
@@ -2439,13 +2423,12 @@ int nand_scan (struct mtd_info *mtd, int maxchips)
2439 /* Check, if buswidth is correct. Hardware drivers should set 2423 /* Check, if buswidth is correct. Hardware drivers should set
2440 * this correct ! */ 2424 * this correct ! */
2441 if (busw != (this->options & NAND_BUSWIDTH_16)) { 2425 if (busw != (this->options & NAND_BUSWIDTH_16)) {
2442 printk (KERN_INFO "NAND device: Manufacturer ID:" 2426 printk(KERN_INFO "NAND device: Manufacturer ID:"
2443 " 0x%02x, Chip ID: 0x%02x (%s %s)\n", nand_maf_id, nand_dev_id, 2427 " 0x%02x, Chip ID: 0x%02x (%s %s)\n", nand_maf_id, nand_dev_id,
2444 nand_manuf_ids[maf_id].name , mtd->name); 2428 nand_manuf_ids[maf_id].name, mtd->name);
2445 printk (KERN_WARNING 2429 printk(KERN_WARNING
2446 "NAND bus width %d instead %d bit\n", 2430 "NAND bus width %d instead %d bit\n",
2447 (this->options & NAND_BUSWIDTH_16) ? 16 : 8, 2431 (this->options & NAND_BUSWIDTH_16) ? 16 : 8, busw ? 16 : 8);
2448 busw ? 16 : 8);
2449 this->select_chip(mtd, -1); 2432 this->select_chip(mtd, -1);
2450 return 1; 2433 return 1;
2451 } 2434 }
@@ -2456,13 +2439,12 @@ int nand_scan (struct mtd_info *mtd, int maxchips)
2456 this->chip_shift = ffs(this->chipsize) - 1; 2439 this->chip_shift = ffs(this->chipsize) - 1;
2457 2440
2458 /* Set the bad block position */ 2441 /* Set the bad block position */
2459 this->badblockpos = mtd->oobblock > 512 ? 2442 this->badblockpos = mtd->oobblock > 512 ? NAND_LARGE_BADBLOCK_POS : NAND_SMALL_BADBLOCK_POS;
2460 NAND_LARGE_BADBLOCK_POS : NAND_SMALL_BADBLOCK_POS;
2461 2443
2462 /* Get chip options, preserve non chip based options */ 2444 /* Get chip options, preserve non chip based options */
2463 this->options &= ~NAND_CHIPOPTIONS_MSK; 2445 this->options &= ~NAND_CHIPOPTIONS_MSK;
2464 this->options |= nand_flash_ids[i].options & NAND_CHIPOPTIONS_MSK; 2446 this->options |= nand_flash_ids[i].options & NAND_CHIPOPTIONS_MSK;
2465 /* Set this as a default. Board drivers can override it, if neccecary */ 2447 /* Set this as a default. Board drivers can override it, if necessary */
2466 this->options |= NAND_NO_AUTOINCR; 2448 this->options |= NAND_NO_AUTOINCR;
2467 /* Check if this is a not a samsung device. Do not clear the options 2449 /* Check if this is a not a samsung device. Do not clear the options
2468 * for chips which are not having an extended id. 2450 * for chips which are not having an extended id.
@@ -2480,23 +2462,23 @@ int nand_scan (struct mtd_info *mtd, int maxchips)
2480 if (mtd->oobblock > 512 && this->cmdfunc == nand_command) 2462 if (mtd->oobblock > 512 && this->cmdfunc == nand_command)
2481 this->cmdfunc = nand_command_lp; 2463 this->cmdfunc = nand_command_lp;
2482 2464
2483 printk (KERN_INFO "NAND device: Manufacturer ID:" 2465 printk(KERN_INFO "NAND device: Manufacturer ID:"
2484 " 0x%02x, Chip ID: 0x%02x (%s %s)\n", nand_maf_id, nand_dev_id, 2466 " 0x%02x, Chip ID: 0x%02x (%s %s)\n", nand_maf_id, nand_dev_id,
2485 nand_manuf_ids[maf_id].name , nand_flash_ids[i].name); 2467 nand_manuf_ids[maf_id].name, nand_flash_ids[i].name);
2486 break; 2468 break;
2487 } 2469 }
2488 2470
2489 if (!nand_flash_ids[i].name) { 2471 if (!nand_flash_ids[i].name) {
2490 printk (KERN_WARNING "No NAND device found!!!\n"); 2472 printk(KERN_WARNING "No NAND device found!!!\n");
2491 this->select_chip(mtd, -1); 2473 this->select_chip(mtd, -1);
2492 return 1; 2474 return 1;
2493 } 2475 }
2494 2476
2495 for (i=1; i < maxchips; i++) { 2477 for (i = 1; i < maxchips; i++) {
2496 this->select_chip(mtd, i); 2478 this->select_chip(mtd, i);
2497 2479
2498 /* Send the command for reading device ID */ 2480 /* Send the command for reading device ID */
2499 this->cmdfunc (mtd, NAND_CMD_READID, 0x00, -1); 2481 this->cmdfunc(mtd, NAND_CMD_READID, 0x00, -1);
2500 2482
2501 /* Read manufacturer and device IDs */ 2483 /* Read manufacturer and device IDs */
2502 if (nand_maf_id != this->read_byte(mtd) || 2484 if (nand_maf_id != this->read_byte(mtd) ||
@@ -2506,13 +2488,13 @@ int nand_scan (struct mtd_info *mtd, int maxchips)
2506 if (i > 1) 2488 if (i > 1)
2507 printk(KERN_INFO "%d NAND chips detected\n", i); 2489 printk(KERN_INFO "%d NAND chips detected\n", i);
2508 2490
2509 /* Allocate buffers, if neccecary */ 2491 /* Allocate buffers, if necessary */
2510 if (!this->oob_buf) { 2492 if (!this->oob_buf) {
2511 size_t len; 2493 size_t len;
2512 len = mtd->oobsize << (this->phys_erase_shift - this->page_shift); 2494 len = mtd->oobsize << (this->phys_erase_shift - this->page_shift);
2513 this->oob_buf = kmalloc (len, GFP_KERNEL); 2495 this->oob_buf = kmalloc(len, GFP_KERNEL);
2514 if (!this->oob_buf) { 2496 if (!this->oob_buf) {
2515 printk (KERN_ERR "nand_scan(): Cannot allocate oob_buf\n"); 2497 printk(KERN_ERR "nand_scan(): Cannot allocate oob_buf\n");
2516 return -ENOMEM; 2498 return -ENOMEM;
2517 } 2499 }
2518 this->options |= NAND_OOBBUF_ALLOC; 2500 this->options |= NAND_OOBBUF_ALLOC;
@@ -2521,11 +2503,11 @@ int nand_scan (struct mtd_info *mtd, int maxchips)
2521 if (!this->data_buf) { 2503 if (!this->data_buf) {
2522 size_t len; 2504 size_t len;
2523 len = mtd->oobblock + mtd->oobsize; 2505 len = mtd->oobblock + mtd->oobsize;
2524 this->data_buf = kmalloc (len, GFP_KERNEL); 2506 this->data_buf = kmalloc(len, GFP_KERNEL);
2525 if (!this->data_buf) { 2507 if (!this->data_buf) {
2526 if (this->options & NAND_OOBBUF_ALLOC) 2508 if (this->options & NAND_OOBBUF_ALLOC)
2527 kfree (this->oob_buf); 2509 kfree(this->oob_buf);
2528 printk (KERN_ERR "nand_scan(): Cannot allocate data_buf\n"); 2510 printk(KERN_ERR "nand_scan(): Cannot allocate data_buf\n");
2529 return -ENOMEM; 2511 return -ENOMEM;
2530 } 2512 }
2531 this->options |= NAND_DATABUF_ALLOC; 2513 this->options |= NAND_DATABUF_ALLOC;
@@ -2555,8 +2537,7 @@ int nand_scan (struct mtd_info *mtd, int maxchips)
2555 this->autooob = &nand_oob_64; 2537 this->autooob = &nand_oob_64;
2556 break; 2538 break;
2557 default: 2539 default:
2558 printk (KERN_WARNING "No oob scheme defined for oobsize %d\n", 2540 printk(KERN_WARNING "No oob scheme defined for oobsize %d\n", mtd->oobsize);
2559 mtd->oobsize);
2560 BUG(); 2541 BUG();
2561 } 2542 }
2562 } 2543 }
@@ -2571,7 +2552,7 @@ int nand_scan (struct mtd_info *mtd, int maxchips)
2571 * check ECC mode, default to software 2552 * check ECC mode, default to software
2572 * if 3byte/512byte hardware ECC is selected and we have 256 byte pagesize 2553 * if 3byte/512byte hardware ECC is selected and we have 256 byte pagesize
2573 * fallback to software ECC 2554 * fallback to software ECC
2574 */ 2555 */
2575 this->eccsize = 256; /* set default eccsize */ 2556 this->eccsize = 256; /* set default eccsize */
2576 this->eccbytes = 3; 2557 this->eccbytes = 3;
2577 2558
@@ -2591,19 +2572,19 @@ int nand_scan (struct mtd_info *mtd, int maxchips)
2591 case NAND_ECC_HW6_512: 2572 case NAND_ECC_HW6_512:
2592 case NAND_ECC_HW8_512: 2573 case NAND_ECC_HW8_512:
2593 if (mtd->oobblock == 256) { 2574 if (mtd->oobblock == 256) {
2594 printk (KERN_WARNING "512 byte HW ECC not possible on 256 Byte pagesize, fallback to SW ECC \n"); 2575 printk(KERN_WARNING "512 byte HW ECC not possible on 256 Byte pagesize, fallback to SW ECC \n");
2595 this->eccmode = NAND_ECC_SOFT; 2576 this->eccmode = NAND_ECC_SOFT;
2596 this->calculate_ecc = nand_calculate_ecc; 2577 this->calculate_ecc = nand_calculate_ecc;
2597 this->correct_data = nand_correct_data; 2578 this->correct_data = nand_correct_data;
2598 } else 2579 } else
2599 this->eccsize = 512; /* set eccsize to 512 */ 2580 this->eccsize = 512; /* set eccsize to 512 */
2600 break; 2581 break;
2601 2582
2602 case NAND_ECC_HW3_256: 2583 case NAND_ECC_HW3_256:
2603 break; 2584 break;
2604 2585
2605 case NAND_ECC_NONE: 2586 case NAND_ECC_NONE:
2606 printk (KERN_WARNING "NAND_ECC_NONE selected by board driver. This is not recommended !!\n"); 2587 printk(KERN_WARNING "NAND_ECC_NONE selected by board driver. This is not recommended !!\n");
2607 this->eccmode = NAND_ECC_NONE; 2588 this->eccmode = NAND_ECC_NONE;
2608 break; 2589 break;
2609 2590
@@ -2613,13 +2594,13 @@ int nand_scan (struct mtd_info *mtd, int maxchips)
2613 break; 2594 break;
2614 2595
2615 default: 2596 default:
2616 printk (KERN_WARNING "Invalid NAND_ECC_MODE %d\n", this->eccmode); 2597 printk(KERN_WARNING "Invalid NAND_ECC_MODE %d\n", this->eccmode);
2617 BUG(); 2598 BUG();
2618 } 2599 }
2619 2600
2620 /* Check hardware ecc function availability and adjust number of ecc bytes per 2601 /* Check hardware ecc function availability and adjust number of ecc bytes per
2621 * calculation step 2602 * calculation step
2622 */ 2603 */
2623 switch (this->eccmode) { 2604 switch (this->eccmode) {
2624 case NAND_ECC_HW12_2048: 2605 case NAND_ECC_HW12_2048:
2625 this->eccbytes += 4; 2606 this->eccbytes += 4;
@@ -2631,7 +2612,7 @@ int nand_scan (struct mtd_info *mtd, int maxchips)
2631 case NAND_ECC_HW3_256: 2612 case NAND_ECC_HW3_256:
2632 if (this->calculate_ecc && this->correct_data && this->enable_hwecc) 2613 if (this->calculate_ecc && this->correct_data && this->enable_hwecc)
2633 break; 2614 break;
2634 printk (KERN_WARNING "No ECC functions supplied, Hardware ECC not possible\n"); 2615 printk(KERN_WARNING "No ECC functions supplied, Hardware ECC not possible\n");
2635 BUG(); 2616 BUG();
2636 } 2617 }
2637 2618
@@ -2659,8 +2640,8 @@ int nand_scan (struct mtd_info *mtd, int maxchips)
2659 2640
2660 /* Initialize state, waitqueue and spinlock */ 2641 /* Initialize state, waitqueue and spinlock */
2661 this->state = FL_READY; 2642 this->state = FL_READY;
2662 init_waitqueue_head (&this->wq); 2643 init_waitqueue_head(&this->wq);
2663 spin_lock_init (&this->chip_lock); 2644 spin_lock_init(&this->chip_lock);
2664 2645
2665 /* De-select the device */ 2646 /* De-select the device */
2666 this->select_chip(mtd, -1); 2647 this->select_chip(mtd, -1);
@@ -2702,37 +2683,36 @@ int nand_scan (struct mtd_info *mtd, int maxchips)
2702 return 0; 2683 return 0;
2703 2684
2704 /* Build bad block table */ 2685 /* Build bad block table */
2705 return this->scan_bbt (mtd); 2686 return this->scan_bbt(mtd);
2706} 2687}
2707 2688
2708/** 2689/**
2709 * nand_release - [NAND Interface] Free resources held by the NAND device 2690 * nand_release - [NAND Interface] Free resources held by the NAND device
2710 * @mtd: MTD device structure 2691 * @mtd: MTD device structure
2711*/ 2692*/
2712void nand_release (struct mtd_info *mtd) 2693void nand_release(struct mtd_info *mtd)
2713{ 2694{
2714 struct nand_chip *this = mtd->priv; 2695 struct nand_chip *this = mtd->priv;
2715 2696
2716#ifdef CONFIG_MTD_PARTITIONS 2697#ifdef CONFIG_MTD_PARTITIONS
2717 /* Deregister partitions */ 2698 /* Deregister partitions */
2718 del_mtd_partitions (mtd); 2699 del_mtd_partitions(mtd);
2719#endif 2700#endif
2720 /* Deregister the device */ 2701 /* Deregister the device */
2721 del_mtd_device (mtd); 2702 del_mtd_device(mtd);
2722 2703
2723 /* Free bad block table memory */ 2704 /* Free bad block table memory */
2724 kfree (this->bbt); 2705 kfree(this->bbt);
2725 /* Buffer allocated by nand_scan ? */ 2706 /* Buffer allocated by nand_scan ? */
2726 if (this->options & NAND_OOBBUF_ALLOC) 2707 if (this->options & NAND_OOBBUF_ALLOC)
2727 kfree (this->oob_buf); 2708 kfree(this->oob_buf);
2728 /* Buffer allocated by nand_scan ? */ 2709 /* Buffer allocated by nand_scan ? */
2729 if (this->options & NAND_DATABUF_ALLOC) 2710 if (this->options & NAND_DATABUF_ALLOC)
2730 kfree (this->data_buf); 2711 kfree(this->data_buf);
2731} 2712}
2732 2713
2733EXPORT_SYMBOL_GPL (nand_scan); 2714EXPORT_SYMBOL_GPL(nand_scan);
2734EXPORT_SYMBOL_GPL (nand_release); 2715EXPORT_SYMBOL_GPL(nand_release);
2735
2736 2716
2737static int __init nand_base_init(void) 2717static int __init nand_base_init(void)
2738{ 2718{
@@ -2748,6 +2728,6 @@ static void __exit nand_base_exit(void)
2748module_init(nand_base_init); 2728module_init(nand_base_init);
2749module_exit(nand_base_exit); 2729module_exit(nand_base_exit);
2750 2730
2751MODULE_LICENSE ("GPL"); 2731MODULE_LICENSE("GPL");
2752MODULE_AUTHOR ("Steven J. Hill <sjhill@realitydiluted.com>, Thomas Gleixner <tglx@linutronix.de>"); 2732MODULE_AUTHOR("Steven J. Hill <sjhill@realitydiluted.com>, Thomas Gleixner <tglx@linutronix.de>");
2753MODULE_DESCRIPTION ("Generic NAND flash driver code"); 2733MODULE_DESCRIPTION("Generic NAND flash driver code");
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-29 10:04:11 -0500