diff options
Diffstat (limited to 'drivers/mtd/onenand/onenand_bbt.c')
| -rw-r--r-- | drivers/mtd/onenand/onenand_bbt.c | 64 |
1 files changed, 35 insertions, 29 deletions
diff --git a/drivers/mtd/onenand/onenand_bbt.c b/drivers/mtd/onenand/onenand_bbt.c index 4510d3361ea..08d0085f3e9 100644 --- a/drivers/mtd/onenand/onenand_bbt.c +++ b/drivers/mtd/onenand/onenand_bbt.c @@ -15,7 +15,7 @@ #include <linux/slab.h> #include <linux/mtd/mtd.h> #include <linux/mtd/onenand.h> -#include <linux/mtd/compatmac.h> +#include <linux/export.h> /** * check_short_pattern - [GENERIC] check if a pattern is in the buffer @@ -62,10 +62,12 @@ static int create_bbt(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr int startblock; loff_t from; size_t readlen, ooblen; + struct mtd_oob_ops ops; + int rgn; printk(KERN_INFO "Scanning device for bad blocks\n"); - len = 1; + len = 2; /* We need only read few bytes from the OOB area */ scanlen = ooblen = 0; @@ -75,33 +77,44 @@ static int create_bbt(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr /* Note that numblocks is 2 * (real numblocks) here; * see i += 2 below as it makses shifting and masking less painful */ - numblocks = mtd->size >> (bbm->bbt_erase_shift - 1); + numblocks = this->chipsize >> (bbm->bbt_erase_shift - 1); startblock = 0; from = 0; + ops.mode = MTD_OPS_PLACE_OOB; + ops.ooblen = readlen; + ops.oobbuf = buf; + ops.len = ops.ooboffs = ops.retlen = ops.oobretlen = 0; + for (i = startblock; i < numblocks; ) { int ret; for (j = 0; j < len; j++) { - size_t retlen; - /* No need to read pages fully, * just read required OOB bytes */ - ret = mtd->read_oob(mtd, from + j * mtd->oobblock + bd->offs, - readlen, &retlen, &buf[0]); + ret = onenand_bbt_read_oob(mtd, + from + j * this->writesize + bd->offs, &ops); - if (ret) - return ret; + /* If it is a initial bad block, just ignore it */ + if (ret == ONENAND_BBT_READ_FATAL_ERROR) + return -EIO; - if (check_short_pattern(&buf[j * scanlen], scanlen, mtd->oobblock, bd)) { + if (ret || check_short_pattern(&buf[j * scanlen], + scanlen, this->writesize, bd)) { bbm->bbt[i >> 3] |= 0x03 << (i & 0x6); - printk(KERN_WARNING "Bad eraseblock %d at 0x%08x\n", - i >> 1, (unsigned int) from); + printk(KERN_INFO "OneNAND eraseblock %d is an " + "initial bad block\n", i >> 1); + mtd->ecc_stats.badblocks++; break; } } i += 2; - from += (1 << bbm->bbt_erase_shift); + + if (FLEXONENAND(this)) { + rgn = flexonenand_region(mtd, from); + from += mtd->eraseregions[rgn].erasesize; + } else + from += (1 << bbm->bbt_erase_shift); } return 0; @@ -120,7 +133,6 @@ static inline int onenand_memory_bbt (struct mtd_info *mtd, struct nand_bbt_desc { struct onenand_chip *this = mtd->priv; - bd->options &= ~NAND_BBT_SCANEMPTY; return create_bbt(mtd, this->page_buf, bd, -1); } @@ -138,10 +150,10 @@ static int onenand_isbad_bbt(struct mtd_info *mtd, loff_t offs, int allowbbt) uint8_t res; /* Get block number * 2 */ - block = (int) (offs >> (bbm->bbt_erase_shift - 1)); + block = (int) (onenand_block(this, offs) << 1); res = (bbm->bbt[block >> 3] >> (block & 0x06)) & 0x03; - DEBUG(MTD_DEBUG_LEVEL2, "onenand_isbad_bbt: bbt info for offs 0x%08x: (block %d) 0x%02x\n", + pr_debug("onenand_isbad_bbt: bbt info for offs 0x%08x: (block %d) 0x%02x\n", (unsigned int) offs, block >> 1, res); switch ((int) res) { @@ -163,8 +175,8 @@ static int onenand_isbad_bbt(struct mtd_info *mtd, loff_t offs, int allowbbt) * marked good / bad blocks and writes the bad block table(s) to * the selected place. * - * The bad block table memory is allocated here. It must be freed - * by calling the onenand_free_bbt function. + * The bad block table memory is allocated here. It is freed + * by the onenand_release function. * */ int onenand_scan_bbt(struct mtd_info *mtd, struct nand_bbt_descr *bd) @@ -173,15 +185,11 @@ int onenand_scan_bbt(struct mtd_info *mtd, struct nand_bbt_descr *bd) struct bbm_info *bbm = this->bbm; int len, ret = 0; - len = mtd->size >> (this->erase_shift + 2); - /* Allocate memory (2bit per block) */ - bbm->bbt = kmalloc(len, GFP_KERNEL); - if (!bbm->bbt) { - printk(KERN_ERR "onenand_scan_bbt: Out of memory\n"); + len = this->chipsize >> (this->erase_shift + 2); + /* Allocate memory (2bit per block) and clear the memory bad block table */ + bbm->bbt = kzalloc(len, GFP_KERNEL); + if (!bbm->bbt) return -ENOMEM; - } - /* Clear the memory bad block table */ - memset(bbm->bbt, 0x00, len); /* Set the bad block position */ bbm->badblockpos = ONENAND_BADBLOCK_POS; @@ -227,14 +235,12 @@ int onenand_default_bbt(struct mtd_info *mtd) struct onenand_chip *this = mtd->priv; struct bbm_info *bbm; - this->bbm = kmalloc(sizeof(struct bbm_info), GFP_KERNEL); + this->bbm = kzalloc(sizeof(struct bbm_info), GFP_KERNEL); if (!this->bbm) return -ENOMEM; bbm = this->bbm; - memset(bbm, 0, sizeof(struct bbm_info)); - /* 1KB page has same configuration as 2KB page */ if (!bbm->badblock_pattern) bbm->badblock_pattern = &largepage_memorybased; |