Implementing the mtd_ooblayout_ops interface is the new way of exposing ECC/OOB layout to MTD users. Modify all NAND drivers to switch to this approach.
Signed-off-by: Boris Brezillon <boris.brezil...@free-electrons.com> --- This commit is a collection of commits that have been squashed to into a single one to limit the size of the patchset. If you want to have separate commit for each of the NAND drivers you can have a look at this branch [1]. [1]https://github.com/bbrezillon/linux-sunxi/commits/nand/ecclayout2 --- arch/arm/mach-pxa/spitz.c | 41 +++- arch/mips/include/asm/mach-jz4740/jz4740_nand.h | 2 +- arch/mips/jz4740/board-qi_lb60.c | 83 ++++--- drivers/mtd/nand/atmel_nand.c | 81 +++---- drivers/mtd/nand/bf5xx_nand.c | 47 ++-- drivers/mtd/nand/brcmnand/brcmnand.c | 255 ++++++++++++-------- drivers/mtd/nand/cafe_nand.c | 42 +++- drivers/mtd/nand/davinci_nand.c | 114 ++++----- drivers/mtd/nand/denali.c | 48 ++-- drivers/mtd/nand/diskonchip.c | 34 ++- drivers/mtd/nand/docg4.c | 29 ++- drivers/mtd/nand/fsl_elbc_nand.c | 79 ++++--- drivers/mtd/nand/fsl_ifc_nand.c | 224 +++++------------- drivers/mtd/nand/fsmc_nand.c | 294 +++++++----------------- drivers/mtd/nand/gpmi-nand/gpmi-nand.c | 48 +++- drivers/mtd/nand/hisi504_nand.c | 26 ++- drivers/mtd/nand/jz4740_nand.c | 2 +- drivers/mtd/nand/lpc32xx_mlc.c | 49 ++-- drivers/mtd/nand/lpc32xx_slc.c | 37 ++- drivers/mtd/nand/mxc_nand.c | 206 ++++++++--------- drivers/mtd/nand/omap2.c | 184 ++++++++------- drivers/mtd/nand/pxa3xx_nand.c | 101 ++++---- drivers/mtd/nand/s3c2410.c | 28 ++- drivers/mtd/nand/sh_flctl.c | 80 +++++-- drivers/mtd/nand/sharpsl.c | 2 +- drivers/mtd/nand/sm_common.c | 88 +++++-- drivers/mtd/nand/sunxi_nand.c | 112 ++++----- drivers/mtd/nand/vf610_nfc.c | 34 +-- include/linux/mtd/sharpsl.h | 2 +- 29 files changed, 1226 insertions(+), 1146 deletions(-) diff --git a/arch/arm/mach-pxa/spitz.c b/arch/arm/mach-pxa/spitz.c index f4e2e27..13ed4e3 100644 --- a/arch/arm/mach-pxa/spitz.c +++ b/arch/arm/mach-pxa/spitz.c @@ -763,14 +763,35 @@ static struct nand_bbt_descr spitz_nand_bbt = { .pattern = scan_ff_pattern }; -static struct nand_ecclayout akita_oobinfo = { - .oobfree = { {0x08, 0x09} }, - .eccbytes = 24, - .eccpos = { - 0x05, 0x01, 0x02, 0x03, 0x06, 0x07, 0x15, 0x11, - 0x12, 0x13, 0x16, 0x17, 0x25, 0x21, 0x22, 0x23, - 0x26, 0x27, 0x35, 0x31, 0x32, 0x33, 0x36, 0x37, - }, +static int akita_eccpos(struct mtd_info *mtd, int eccbyte) +{ + static int eccpos[] = { + 0x05, 0x01, 0x02, 0x03, 0x06, 0x07, 0x15, 0x11, + 0x12, 0x13, 0x16, 0x17, 0x25, 0x21, 0x22, 0x23, + 0x26, 0x27, 0x35, 0x31, 0x32, 0x33, 0x36, 0x37, + }; + + if (eccbyte >= ARRAY_SIZE(eccpos)) + return -ERANGE; + + return eccpos[eccbyte]; +} + +static int akita_oobfree(struct mtd_info *mtd, int section, + struct nand_oobfree *oobfree) +{ + if (section) + return -ERANGE; + + oobfree->offset = 8; + oobfree->length = 9; + + return 0; +} + +static const struct mtd_ooblayout_ops akita_ooblayout_ops = { + .eccpos = akita_eccpos, + .oobfree = akita_oobfree, }; static struct sharpsl_nand_platform_data spitz_nand_pdata = { @@ -804,11 +825,11 @@ static void __init spitz_nand_init(void) } else if (machine_is_akita()) { spitz_nand_partitions[1].size = 58 * 1024 * 1024; spitz_nand_bbt.len = 1; - spitz_nand_pdata.ecc_layout = &akita_oobinfo; + spitz_nand_pdata.ecc_layout = &akita_ooblayout_ops; } else if (machine_is_borzoi()) { spitz_nand_partitions[1].size = 32 * 1024 * 1024; spitz_nand_bbt.len = 1; - spitz_nand_pdata.ecc_layout = &akita_oobinfo; + spitz_nand_pdata.ecc_layout = &akita_ooblayout_ops; } platform_device_register(&spitz_nand_device); diff --git a/arch/mips/include/asm/mach-jz4740/jz4740_nand.h b/arch/mips/include/asm/mach-jz4740/jz4740_nand.h index 398733e..7f7b0fc 100644 --- a/arch/mips/include/asm/mach-jz4740/jz4740_nand.h +++ b/arch/mips/include/asm/mach-jz4740/jz4740_nand.h @@ -27,7 +27,7 @@ struct jz_nand_platform_data { unsigned char banks[JZ_NAND_NUM_BANKS]; - void (*ident_callback)(struct platform_device *, struct nand_chip *, + void (*ident_callback)(struct platform_device *, struct mtd_info *, struct mtd_partition **, int *num_partitions); }; diff --git a/arch/mips/jz4740/board-qi_lb60.c b/arch/mips/jz4740/board-qi_lb60.c index 934b15b..951621a 100644 --- a/arch/mips/jz4740/board-qi_lb60.c +++ b/arch/mips/jz4740/board-qi_lb60.c @@ -50,20 +50,6 @@ static bool is_avt2; #define QI_LB60_GPIO_KEYIN8 JZ_GPIO_PORTD(26) /* NAND */ -static struct nand_ecclayout qi_lb60_ecclayout_1gb = { - .eccbytes = 36, - .eccpos = { - 6, 7, 8, 9, 10, 11, 12, 13, - 14, 15, 16, 17, 18, 19, 20, 21, - 22, 23, 24, 25, 26, 27, 28, 29, - 30, 31, 32, 33, 34, 35, 36, 37, - 38, 39, 40, 41 - }, - .oobfree = { - { .offset = 2, .length = 4 }, - { .offset = 42, .length = 22 } - }, -}; /* Early prototypes of the QI LB60 had only 1GB of NAND. * In order to support these devices as well the partition and ecc layout is @@ -86,25 +72,6 @@ static struct mtd_partition qi_lb60_partitions_1gb[] = { }, }; -static struct nand_ecclayout qi_lb60_ecclayout_2gb = { - .eccbytes = 72, - .eccpos = { - 12, 13, 14, 15, 16, 17, 18, 19, - 20, 21, 22, 23, 24, 25, 26, 27, - 28, 29, 30, 31, 32, 33, 34, 35, - 36, 37, 38, 39, 40, 41, 42, 43, - 44, 45, 46, 47, 48, 49, 50, 51, - 52, 53, 54, 55, 56, 57, 58, 59, - 60, 61, 62, 63, 64, 65, 66, 67, - 68, 69, 70, 71, 72, 73, 74, 75, - 76, 77, 78, 79, 80, 81, 82, 83 - }, - .oobfree = { - { .offset = 2, .length = 10 }, - { .offset = 84, .length = 44 }, - }, -}; - static struct mtd_partition qi_lb60_partitions_2gb[] = { { .name = "NAND BOOT partition", @@ -123,19 +90,63 @@ static struct mtd_partition qi_lb60_partitions_2gb[] = { }, }; +static int qi_lb60_eccpos(struct mtd_info *mtd, int eccbyte) +{ + int eccbytes = 36, eccoff = 6; + + if (mtd->oobsize == 128) { + eccbytes *= 2; + eccoff *= 2; + } + + if (eccbyte >= eccbytes) + return -ERANGE; + + return eccoff + eccbyte; +} + +static int qi_lb60_oobfree(struct mtd_info *mtd, int section, + struct nand_oobfree *oobfree) +{ + int eccbytes = 36, eccoff = 6; + + if (section > 1) + return -ERANGE; + + if (mtd->oobsize == 128) { + eccbytes *= 2; + eccoff *= 2; + } + + if (!section) { + oobfree->offset = 2; + oobfree->length = eccoff - 2; + } else { + oobfree->offset = eccoff + eccbytes; + oobfree->length = mtd->oobsize - oobfree->offset; + } + + return 0; +} + +static const struct mtd_ooblayout_ops qi_lb60_ooblayout_ops = { + .eccpos = qi_lb60_eccpos, + .oobfree = qi_lb60_oobfree, +}; + static void qi_lb60_nand_ident(struct platform_device *pdev, - struct nand_chip *chip, struct mtd_partition **partitions, + struct mtd_info *mtd, struct mtd_partition **partitions, int *num_partitions) { if (chip->page_shift == 12) { - chip->ecc.layout = &qi_lb60_ecclayout_2gb; *partitions = qi_lb60_partitions_2gb; *num_partitions = ARRAY_SIZE(qi_lb60_partitions_2gb); } else { - chip->ecc.layout = &qi_lb60_ecclayout_1gb; *partitions = qi_lb60_partitions_1gb; *num_partitions = ARRAY_SIZE(qi_lb60_partitions_1gb); } + + mtd_set_ooblayout(mtd, &qi_lb60_ooblayout_ops); } static struct jz_nand_platform_data qi_lb60_nand_pdata = { diff --git a/drivers/mtd/nand/atmel_nand.c b/drivers/mtd/nand/atmel_nand.c index da16b1a..e67a502 100644 --- a/drivers/mtd/nand/atmel_nand.c +++ b/drivers/mtd/nand/atmel_nand.c @@ -67,30 +67,40 @@ struct atmel_nand_caps { bool pmecc_correct_erase_page; }; -/* oob layout for large page size +/* + * oob layout for large page size * bad block info is on bytes 0 and 1 * the bytes have to be consecutives to avoid * several NAND_CMD_RNDOUT during read - */ -static struct nand_ecclayout atmel_oobinfo_large = { - .eccbytes = 4, - .eccpos = {60, 61, 62, 63}, - .oobfree = { - {2, 58} - }, -}; - -/* oob layout for small page size + * + * oob layout for small page size * bad block info is on bytes 4 and 5 * the bytes have to be consecutives to avoid * several NAND_CMD_RNDOUT during read */ -static struct nand_ecclayout atmel_oobinfo_small = { - .eccbytes = 4, - .eccpos = {0, 1, 2, 3}, - .oobfree = { - {6, 10} - }, +static int atmel_eccpos_sp(struct mtd_info *mtd, int eccbyte) +{ + if (eccbyte >= 4) + return -ERANGE; + + return eccbyte; +} + +static int atmel_oobfree_sp(struct mtd_info *mtd, int section, + struct nand_oobfree *oobfree) +{ + if (section) + return -ERANGE; + + oobfree->offset = 6; + oobfree->length = mtd->oobsize - oobfree->offset; + + return 0; +} + +static const struct mtd_ooblayout_ops atmel_ooblayout_sp_ops = { + .eccpos = atmel_eccpos_sp, + .oobfree = atmel_oobfree_sp, }; struct atmel_nfc { @@ -157,8 +167,6 @@ struct atmel_nand_host { int *pmecc_delta; }; -static struct nand_ecclayout atmel_pmecc_oobinfo; - /* * Enable NAND. */ @@ -474,22 +482,6 @@ static int pmecc_get_ecc_bytes(int cap, int sector_size) return (m * cap + 7) / 8; } -static void pmecc_config_ecc_layout(struct nand_ecclayout *layout, - int oobsize, int ecc_len) -{ - int i; - - layout->eccbytes = ecc_len; - - /* ECC will occupy the last ecc_len bytes continuously */ - for (i = 0; i < ecc_len; i++) - layout->eccpos[i] = oobsize - ecc_len + i; - - layout->oobfree[0].offset = PMECC_OOB_RESERVED_BYTES; - layout->oobfree[0].length = - oobsize - ecc_len - layout->oobfree[0].offset; -} - static void __iomem *pmecc_get_alpha_to(struct atmel_nand_host *host) { int table_size; @@ -993,8 +985,8 @@ static void atmel_pmecc_core_init(struct mtd_info *mtd) { struct nand_chip *nand_chip = mtd->priv; struct atmel_nand_host *host = nand_chip->priv; + int eccbytes = nand_chip->ecc.bytes * nand_chip->ecc.steps; uint32_t val = 0; - struct nand_ecclayout *ecc_layout; pmecc_writel(host->ecc, CTRL, PMECC_CTRL_RST); pmecc_writel(host->ecc, CTRL, PMECC_CTRL_DISABLE); @@ -1041,11 +1033,9 @@ static void atmel_pmecc_core_init(struct mtd_info *mtd) | PMECC_CFG_AUTO_DISABLE); pmecc_writel(host->ecc, CFG, val); - ecc_layout = nand_chip->ecc.layout; pmecc_writel(host->ecc, SAREA, mtd->oobsize - 1); pmecc_writel(host->ecc, SADDR, mtd_eccpos(mtd, 0)); - pmecc_writel(host->ecc, EADDR, - mtd_eccpos(mtd, ecc_layout->eccbytes - 1)); + pmecc_writel(host->ecc, EADDR, mtd_eccpos(mtd, eccbytes - 1)); /* See datasheet about PMECC Clock Control Register */ pmecc_writel(host->ecc, CLK, 2); pmecc_writel(host->ecc, IDR, 0xff); @@ -1260,11 +1250,8 @@ static int atmel_pmecc_nand_init_params(struct platform_device *pdev, err_no = -EINVAL; goto err; } - pmecc_config_ecc_layout(&atmel_pmecc_oobinfo, - mtd->oobsize, - nand_chip->ecc.total); - nand_chip->ecc.layout = &atmel_pmecc_oobinfo; + mtd_set_ooblayout(mtd, &nand_ooblayout_lp_ops); break; default: dev_warn(host->dev, @@ -1607,19 +1594,19 @@ static int atmel_hw_nand_init_params(struct platform_device *pdev, /* set ECC page size and oob layout */ switch (mtd->writesize) { case 512: - nand_chip->ecc.layout = &atmel_oobinfo_small; + mtd_set_ooblayout(mtd, &atmel_ooblayout_sp_ops); ecc_writel(host->ecc, MR, ATMEL_ECC_PAGESIZE_528); break; case 1024: - nand_chip->ecc.layout = &atmel_oobinfo_large; + mtd_set_ooblayout(mtd, &nand_ooblayout_lp_ops); ecc_writel(host->ecc, MR, ATMEL_ECC_PAGESIZE_1056); break; case 2048: - nand_chip->ecc.layout = &atmel_oobinfo_large; + mtd_set_ooblayout(mtd, &nand_ooblayout_lp_ops); ecc_writel(host->ecc, MR, ATMEL_ECC_PAGESIZE_2112); break; case 4096: - nand_chip->ecc.layout = &atmel_oobinfo_large; + mtd_set_ooblayout(mtd, &nand_ooblayout_lp_ops); ecc_writel(host->ecc, MR, ATMEL_ECC_PAGESIZE_4224); break; default: diff --git a/drivers/mtd/nand/bf5xx_nand.c b/drivers/mtd/nand/bf5xx_nand.c index 61bd216..c0bbcd6 100644 --- a/drivers/mtd/nand/bf5xx_nand.c +++ b/drivers/mtd/nand/bf5xx_nand.c @@ -109,28 +109,29 @@ static const unsigned short bfin_nfc_pin_req[] = 0}; #ifdef CONFIG_MTD_NAND_BF5XX_BOOTROM_ECC -static struct nand_ecclayout bootrom_ecclayout = { - .eccbytes = 24, - .eccpos = { - 0x8 * 0, 0x8 * 0 + 1, 0x8 * 0 + 2, - 0x8 * 1, 0x8 * 1 + 1, 0x8 * 1 + 2, - 0x8 * 2, 0x8 * 2 + 1, 0x8 * 2 + 2, - 0x8 * 3, 0x8 * 3 + 1, 0x8 * 3 + 2, - 0x8 * 4, 0x8 * 4 + 1, 0x8 * 4 + 2, - 0x8 * 5, 0x8 * 5 + 1, 0x8 * 5 + 2, - 0x8 * 6, 0x8 * 6 + 1, 0x8 * 6 + 2, - 0x8 * 7, 0x8 * 7 + 1, 0x8 * 7 + 2 - }, - .oobfree = { - { 0x8 * 0 + 3, 5 }, - { 0x8 * 1 + 3, 5 }, - { 0x8 * 2 + 3, 5 }, - { 0x8 * 3 + 3, 5 }, - { 0x8 * 4 + 3, 5 }, - { 0x8 * 5 + 3, 5 }, - { 0x8 * 6 + 3, 5 }, - { 0x8 * 7 + 3, 5 }, - } +static int bootrom_eccpos(struct mtd_info *mtd, int eccbyte) +{ + if (eccbyte >= 24) + return -ERANGE; + + return ((eccbyte / 3) * 8) + (eccbyte % 3); +} + +static int bootrom_oobfree(struct mtd_info *mtd, int section, + struct nand_oobfree *oobfree) +{ + if (section > 7) + return -ERANGE; + + oobfree->offset = section * 8; + oobfree->length = 5; + + return 0; +} + +static const struct mtd_ooblayout_ops bootrom_ooblayout_ops = { + .eccpos = bootrom_eccpos, + .oobfree = bootrom_oobfree, }; #endif @@ -793,7 +794,7 @@ static int bf5xx_nand_probe(struct platform_device *pdev) /* setup hardware ECC data struct */ if (hardware_ecc) { #ifdef CONFIG_MTD_NAND_BF5XX_BOOTROM_ECC - chip->ecc.layout = &bootrom_ecclayout; + mtd_set_ooblayout(mtd, &bootrom_ooblayout_ops); #endif chip->read_buf = bf5xx_nand_dma_read_buf; chip->write_buf = bf5xx_nand_dma_write_buf; diff --git a/drivers/mtd/nand/brcmnand/brcmnand.c b/drivers/mtd/nand/brcmnand/brcmnand.c index a906ec2..5815afd 100644 --- a/drivers/mtd/nand/brcmnand/brcmnand.c +++ b/drivers/mtd/nand/brcmnand/brcmnand.c @@ -746,126 +746,179 @@ static inline bool is_hamming_ecc(struct brcmnand_cfg *cfg) } /* - * Returns a nand_ecclayout strucutre for the given layout/configuration. - * Returns NULL on failure. + * Set mtd->ooblayout to the appropriate mtd_ooblayout_ops given + * the layout/configuration. + * Returns -ERRCODE on failure. */ -static struct nand_ecclayout *brcmnand_create_layout(int ecc_level, - struct brcmnand_host *host) +static int brcmnand_hamming_eccpos(struct mtd_info *mtd, int eccbyte) { + struct nand_chip *chip = mtd->priv; + struct brcmnand_host *host = chip->priv; struct brcmnand_cfg *cfg = &host->hwcfg; - int i, j; - struct nand_ecclayout *layout; - int req; - int sectors; - int sas; - int idx1, idx2; - - layout = devm_kzalloc(&host->pdev->dev, sizeof(*layout), GFP_KERNEL); - if (!layout) - return NULL; - - sectors = cfg->page_size / (512 << cfg->sector_size_1k); - sas = cfg->spare_area_size << cfg->sector_size_1k; - - /* Hamming */ - if (is_hamming_ecc(cfg)) { - for (i = 0, idx1 = 0, idx2 = 0; i < sectors; i++) { - /* First sector of each page may have BBI */ - if (i == 0) { - layout->oobfree[idx2].offset = i * sas + 1; - /* Small-page NAND use byte 6 for BBI */ - if (cfg->page_size == 512) - layout->oobfree[idx2].offset--; - layout->oobfree[idx2].length = 5; - } else { - layout->oobfree[idx2].offset = i * sas; - layout->oobfree[idx2].length = 6; - } - idx2++; - layout->eccpos[idx1++] = i * sas + 6; - layout->eccpos[idx1++] = i * sas + 7; - layout->eccpos[idx1++] = i * sas + 8; - layout->oobfree[idx2].offset = i * sas + 9; - layout->oobfree[idx2].length = 7; - idx2++; - /* Leave zero-terminated entry for OOBFREE */ - if (idx1 >= MTD_MAX_ECCPOS_ENTRIES_LARGE || - idx2 >= MTD_MAX_OOBFREE_ENTRIES_LARGE - 1) - break; + int sas = cfg->spare_area_size << cfg->sector_size_1k; + int sectors = cfg->page_size / (512 << cfg->sector_size_1k); + int sector = eccbyte / 3; + + if (sector >= sectors) + return -ERANGE; + + return (sector * sas) + (eccbyte % 3) + 6; +} + +static int brcmnand_hamming_oobfree(struct mtd_info *mtd, int section, + struct nand_oobfree *oobfree) +{ + struct nand_chip *chip = mtd->priv; + struct brcmnand_host *host = chip->priv; + struct brcmnand_cfg *cfg = &host->hwcfg; + int sas = cfg->spare_area_size << cfg->sector_size_1k; + int sectors = cfg->page_size / (512 << cfg->sector_size_1k); + + if (section >= sectors * 2) + return -ERANGE; + + oobfree->offset = (section / 2) * sas; + + if (section & 1) { + oobfree->offset += 9; + oobfree->length = 7; + } else { + oobfree->length = 6; + + /* First sector of each page may have BBI */ + if (!section) { + /* + * Small-page NAND use byte 6 for BBI while large-page + * NAND use byte 0. + */ + if (cfg->page_size > 512) + oobfree->offset++; + oobfree->length--; } - goto out; } - /* - * CONTROLLER_VERSION: - * < v5.0: ECC_REQ = ceil(BCH_T * 13/8) - * >= v5.0: ECC_REQ = ceil(BCH_T * 14/8) - * But we will just be conservative. - */ - req = DIV_ROUND_UP(ecc_level * 14, 8); - if (req >= sas) { - dev_err(&host->pdev->dev, - "error: ECC too large for OOB (ECC bytes %d, spare sector %d)\n", - req, sas); - return NULL; + return 0; +} + +static const struct mtd_ooblayout_ops brcmnand_hamming_ooblayout_ops = { + .eccpos = brcmnand_hamming_eccpos, + .oobfree = brcmnand_hamming_oobfree, +}; + +static int brcmnand_bch_eccpos(struct mtd_info *mtd, int eccbyte) +{ + struct nand_chip *chip = mtd->priv; + struct brcmnand_host *host = chip->priv; + struct brcmnand_cfg *cfg = &host->hwcfg; + int sas = cfg->spare_area_size << cfg->sector_size_1k; + int sectors = cfg->page_size / (512 << cfg->sector_size_1k); + int sector = eccbyte / chip->ecc.bytes; + + if (sector >= sectors) + return -ERANGE; + + return (sector * (sas + 1)) - chip->ecc.bytes + + (eccbyte % chip->ecc.bytes); +} + +static int brcmnand_bch_oobfree_lp(struct mtd_info *mtd, int section, + struct nand_oobfree *oobfree) +{ + struct nand_chip *chip = mtd->priv; + struct brcmnand_host *host = chip->priv; + struct brcmnand_cfg *cfg = &host->hwcfg; + int sas = cfg->spare_area_size << cfg->sector_size_1k; + int sectors = cfg->page_size / (512 << cfg->sector_size_1k); + + if (section >= sectors) + return -ERANGE; + + if (sas <= chip->ecc.bytes) + return 0; + + oobfree->offset = section * sas; + oobfree->length = sas - chip->ecc.bytes; + + if (!section) { + oobfree->offset++; + oobfree->length--; } - layout->eccbytes = req * sectors; - for (i = 0, idx1 = 0, idx2 = 0; i < sectors; i++) { - for (j = sas - req; j < sas && idx1 < - MTD_MAX_ECCPOS_ENTRIES_LARGE; j++, idx1++) - layout->eccpos[idx1] = i * sas + j; + return 0; +} - /* First sector of each page may have BBI */ - if (i == 0) { - if (cfg->page_size == 512 && (sas - req >= 6)) { - /* Small-page NAND use byte 6 for BBI */ - layout->oobfree[idx2].offset = 0; - layout->oobfree[idx2].length = 5; - idx2++; - if (sas - req > 6) { - layout->oobfree[idx2].offset = 6; - layout->oobfree[idx2].length = - sas - req - 6; - idx2++; - } - } else if (sas > req + 1) { - layout->oobfree[idx2].offset = i * sas + 1; - layout->oobfree[idx2].length = sas - req - 1; - idx2++; - } - } else if (sas > req) { - layout->oobfree[idx2].offset = i * sas; - layout->oobfree[idx2].length = sas - req; - idx2++; - } - /* Leave zero-terminated entry for OOBFREE */ - if (idx1 >= MTD_MAX_ECCPOS_ENTRIES_LARGE || - idx2 >= MTD_MAX_OOBFREE_ENTRIES_LARGE - 1) - break; +static int brcmnand_bch_oobfree_sp(struct mtd_info *mtd, int section, + struct nand_oobfree *oobfree) +{ + struct nand_chip *chip = mtd->priv; + struct brcmnand_host *host = chip->priv; + struct brcmnand_cfg *cfg = &host->hwcfg; + int sas = cfg->spare_area_size << cfg->sector_size_1k; + + if (section > 1 || sas - chip->ecc.bytes < 6 || + (section && sas - chip->ecc.bytes == 6)) + return -ERANGE; + + if (!section) { + oobfree->offset = 0; + oobfree->length = 5; + } else { + oobfree->offset = 6; + oobfree->length = sas - chip->ecc.bytes - 6; } -out: - return layout; + + return 0; } -static struct nand_ecclayout *brcmstb_choose_ecc_layout( - struct brcmnand_host *host) +static const struct mtd_ooblayout_ops brcmnand_bch_lp_ooblayout_ops = { + .eccpos = brcmnand_bch_eccpos, + .oobfree = brcmnand_bch_oobfree_lp, +}; + +static const struct mtd_ooblayout_ops brcmnand_bch_sp_ooblayout_ops = { + .eccpos = brcmnand_bch_eccpos, + .oobfree = brcmnand_bch_oobfree_sp, +}; + +static int brcmstb_choose_ecc_layout(struct brcmnand_host *host) { - struct nand_ecclayout *layout; struct brcmnand_cfg *p = &host->hwcfg; + struct mtd_info *mtd = &host->mtd; + struct nand_ecc_ctrl *ecc = &host->chip.ecc; unsigned int ecc_level = p->ecc_level; + int sas = p->spare_area_size << p->sector_size_1k; + int sectors = p->page_size / (512 << p->sector_size_1k); if (p->sector_size_1k) ecc_level <<= 1; - layout = brcmnand_create_layout(ecc_level, host); - if (!layout) { + if (is_hamming_ecc(p)) { + ecc->bytes = 3 * sectors; + mtd_set_ooblayout(mtd, &brcmnand_hamming_ooblayout_ops); + return 0; + } else { + /* + * CONTROLLER_VERSION: + * < v5.0: ECC_REQ = ceil(BCH_T * 13/8) + * >= v5.0: ECC_REQ = ceil(BCH_T * 14/8) + * But we will just be conservative. + */ + ecc->bytes = DIV_ROUND_UP(ecc_level * 14, 8); + + if (p->page_size == 512) + mtd_set_ooblayout(mtd, &brcmnand_bch_sp_ooblayout_ops); + else + mtd_set_ooblayout(mtd, &brcmnand_bch_lp_ooblayout_ops); + } + + if (ecc->bytes >= sas) { dev_err(&host->pdev->dev, - "no proper ecc_layout for this NAND cfg\n"); - return NULL; + "error: ECC too large for OOB (ECC bytes %d, spare sector %d)\n", + ecc->bytes, sas); + return -EINVAL; } - return layout; + return 0; } static void brcmnand_wp(struct mtd_info *mtd, int wp) @@ -1976,9 +2029,9 @@ static int brcmnand_init_cs(struct brcmnand_host *host, struct device_node *dn) /* only use our internal HW threshold */ mtd->bitflip_threshold = 1; - chip->ecc.layout = brcmstb_choose_ecc_layout(host); - if (!chip->ecc.layout) - return -ENXIO; + ret = brcmstb_choose_ecc_layout(host); + if (ret) + return ret; if (nand_scan_tail(mtd)) return -ENXIO; diff --git a/drivers/mtd/nand/cafe_nand.c b/drivers/mtd/nand/cafe_nand.c index cce3ac4..39b2dcd 100644 --- a/drivers/mtd/nand/cafe_nand.c +++ b/drivers/mtd/nand/cafe_nand.c @@ -459,10 +459,35 @@ static int cafe_nand_read_page(struct mtd_info *mtd, struct nand_chip *chip, return max_bitflips; } -static struct nand_ecclayout cafe_oobinfo_2048 = { - .eccbytes = 14, - .eccpos = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13}, - .oobfree = {{14, 50}} +static int cafe_eccpos(struct mtd_info *mtd, int eccbyte) +{ + struct nand_chip *chip = mtd->priv; + int eccbytes = chip->ecc.steps * chip->ecc.bytes; + + if (eccbyte >= eccbytes) + return -ERANGE; + + return eccbyte; +} + +static int cafe_oobfree(struct mtd_info *mtd, int section, + struct nand_oobfree *oobfree) +{ + struct nand_chip *chip = mtd->priv; + int eccbytes = chip->ecc.steps * chip->ecc.bytes; + + if (section) + return -ERANGE; + + oobfree->offset = eccbytes; + oobfree->length = mtd->oobsize - eccbytes; + + return 0; +} + +static const struct mtd_ooblayout_ops cafe_ooblayout_ops = { + .eccpos = cafe_eccpos, + .oobfree = cafe_oobfree, }; /* Ick. The BBT code really ought to be able to work this bit out @@ -494,12 +519,6 @@ static struct nand_bbt_descr cafe_bbt_mirror_descr_2048 = { .pattern = cafe_mirror_pattern_2048 }; -static struct nand_ecclayout cafe_oobinfo_512 = { - .eccbytes = 14, - .eccpos = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13}, - .oobfree = {{14, 2}} -}; - static struct nand_bbt_descr cafe_bbt_main_descr_512 = { .options = NAND_BBT_LASTBLOCK | NAND_BBT_CREATE | NAND_BBT_WRITE | NAND_BBT_2BIT | NAND_BBT_VERSION, @@ -744,12 +763,11 @@ static int cafe_nand_probe(struct pci_dev *pdev, cafe->ctl2 |= 1<<29; /* 2KiB page size */ /* Set up ECC according to the type of chip we found */ + mtd_set_ooblayout(mtd, &cafe_ooblayout_ops); if (mtd->writesize == 2048) { - cafe->nand.ecc.layout = &cafe_oobinfo_2048; cafe->nand.bbt_td = &cafe_bbt_main_descr_2048; cafe->nand.bbt_md = &cafe_bbt_mirror_descr_2048; } else if (mtd->writesize == 512) { - cafe->nand.ecc.layout = &cafe_oobinfo_512; cafe->nand.bbt_td = &cafe_bbt_main_descr_512; cafe->nand.bbt_md = &cafe_bbt_mirror_descr_512; } else { diff --git a/drivers/mtd/nand/davinci_nand.c b/drivers/mtd/nand/davinci_nand.c index 8e351af..116ee76 100644 --- a/drivers/mtd/nand/davinci_nand.c +++ b/drivers/mtd/nand/davinci_nand.c @@ -55,7 +55,6 @@ struct davinci_nand_info { struct mtd_info mtd; struct nand_chip chip; - struct nand_ecclayout ecclayout; struct device *dev; struct clk *clk; @@ -487,63 +486,39 @@ static int nand_davinci_dev_ready(struct mtd_info *mtd) * ten ECC bytes plus the manufacturer's bad block marker byte, and * and not overlapping the default BBT markers. */ -static struct nand_ecclayout hwecc4_small = { - .eccbytes = 10, - .eccpos = { 0, 1, 2, 3, 4, - /* offset 5 holds the badblock marker */ - 6, 7, - 13, 14, 15, }, - .oobfree = { - {.offset = 8, .length = 5, }, - {.offset = 16, }, - }, -}; +static int hwecc4_small_eccpos(struct mtd_info *mtd, int eccbyte) +{ + if (eccbyte >= 10) + return -ERANGE; -/* An ECC layout for using 4-bit ECC with large-page (2048bytes) flash, - * storing ten ECC bytes plus the manufacturer's bad block marker byte, - * and not overlapping the default BBT markers. - */ -static struct nand_ecclayout hwecc4_2048 = { - .eccbytes = 40, - .eccpos = { - /* at the end of spare sector */ - 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, - 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, - 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, - 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, - }, - .oobfree = { - /* 2 bytes at offset 0 hold manufacturer badblock markers */ - {.offset = 2, .length = 22, }, - /* 5 bytes at offset 8 hold BBT markers */ - /* 8 bytes at offset 16 hold JFFS2 clean markers */ - }, -}; + if (eccbyte < 5) + return eccbyte; + else if (eccbyte < 7) + return eccbyte + 1; -/* - * An ECC layout for using 4-bit ECC with large-page (4096bytes) flash, - * storing ten ECC bytes plus the manufacturer's bad block marker byte, - * and not overlapping the default BBT markers. - */ -static struct nand_ecclayout hwecc4_4096 = { - .eccbytes = 80, - .eccpos = { - /* at the end of spare sector */ - 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, - 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, - 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, - 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, - 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, - 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, - 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, - 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, - }, - .oobfree = { - /* 2 bytes at offset 0 hold manufacturer badblock markers */ - {.offset = 2, .length = 46, }, - /* 5 bytes at offset 8 hold BBT markers */ - /* 8 bytes at offset 16 hold JFFS2 clean markers */ - }, + return eccbyte + 6; +} + +static int hwecc4_small_oobfree(struct mtd_info *mtd, int section, + struct nand_oobfree *oobfree) +{ + if (section > 1) + return -ERANGE; + + if (!section) { + oobfree->offset = 8; + oobfree->length = 5; + } else { + oobfree->offset = 16; + oobfree->length = mtd->oobsize - 16; + } + + return 0; +} + +static const struct mtd_ooblayout_ops hwecc4_small_ooblayout_ops = { + .eccpos = hwecc4_small_eccpos, + .oobfree = hwecc4_small_oobfree, }; #if defined(CONFIG_OF) @@ -810,27 +785,16 @@ static int nand_davinci_probe(struct platform_device *pdev) * table marker fits in the free bytes. */ if (chunks == 1) { - info->ecclayout = hwecc4_small; - info->ecclayout.oobfree[1].length = - info->mtd.oobsize - 16; - goto syndrome_done; - } - if (chunks == 4) { - info->ecclayout = hwecc4_2048; + mtd_set_ooblayout(&info->mtd, + &hwecc4_small_ooblayout_ops); + } else if (chunks == 4 || chunks == 8) { + mtd_set_ooblayout(&info->mtd, + &nand_ooblayout_lp_ops); info->chip.ecc.mode = NAND_ECC_HW_OOB_FIRST; - goto syndrome_done; - } - if (chunks == 8) { - info->ecclayout = hwecc4_4096; - info->chip.ecc.mode = NAND_ECC_HW_OOB_FIRST; - goto syndrome_done; + } else { + ret = -EIO; + goto err; } - - ret = -EIO; - goto err; - -syndrome_done: - info->chip.ecc.layout = &info->ecclayout; } ret = nand_scan_tail(&info->mtd); diff --git a/drivers/mtd/nand/denali.c b/drivers/mtd/nand/denali.c index 67eb2be..23086e3 100644 --- a/drivers/mtd/nand/denali.c +++ b/drivers/mtd/nand/denali.c @@ -1369,13 +1369,39 @@ static void denali_hw_init(struct denali_nand_info *denali) * correction */ #define ECC_8BITS 14 -static struct nand_ecclayout nand_8bit_oob = { - .eccbytes = 14, -}; - #define ECC_15BITS 26 -static struct nand_ecclayout nand_15bit_oob = { - .eccbytes = 26, + +static int denali_eccpos(struct mtd_info *mtd, int eccbyte) +{ + struct denali_nand_info *denali = mtd_to_denali(mtd); + struct nand_chip *chip = mtd_to_nand(mtd); + int eccbytes = chip->ecc.bytes * chip->ecc.steps; + + if (eccbyte >= eccbytes) + return -ERANGE; + + return eccbyte + denali->bbtskipbytes; +} + +static int denali_oobfree(struct mtd_info *mtd, int section, + struct nand_oobfree *oobfree) +{ + struct denali_nand_info *denali = mtd_to_denali(mtd); + struct nand_chip *chip = mtd_to_nand(mtd); + int eccbytes = chip->ecc.bytes * chip->ecc.steps; + + if (section) + return -ERANGE; + + oobfree->offset = eccbytes + denali->bbtskipbytes; + oobfree->length = mtd->oobsize - oobfree->offset; + + return 0; +} + +static const struct mtd_ooblayout_ops denali_ooblayout_ops = { + .eccpos = denali_eccpos, + .oobfree = denali_oobfree, }; static uint8_t bbt_pattern[] = {'B', 'b', 't', '0' }; @@ -1556,7 +1582,6 @@ int denali_init(struct denali_nand_info *denali) ECC_SECTOR_SIZE)))) { /* if MLC OOB size is large enough, use 15bit ECC*/ denali->nand.ecc.strength = 15; - denali->nand.ecc.layout = &nand_15bit_oob; denali->nand.ecc.bytes = ECC_15BITS; iowrite32(15, denali->flash_reg + ECC_CORRECTION); } else if (denali->mtd.oobsize < (denali->bbtskipbytes + @@ -1566,20 +1591,13 @@ int denali_init(struct denali_nand_info *denali) goto failed_req_irq; } else { denali->nand.ecc.strength = 8; - denali->nand.ecc.layout = &nand_8bit_oob; denali->nand.ecc.bytes = ECC_8BITS; iowrite32(8, denali->flash_reg + ECC_CORRECTION); } + mtd_set_ooblayout(&denali->mtd, &denali_ooblayout_ops); denali->nand.ecc.bytes *= denali->devnum; denali->nand.ecc.strength *= denali->devnum; - denali->nand.ecc.layout->eccbytes *= - denali->mtd.writesize / ECC_SECTOR_SIZE; - denali->nand.ecc.layout->oobfree[0].offset = - denali->bbtskipbytes + denali->nand.ecc.layout->eccbytes; - denali->nand.ecc.layout->oobfree[0].length = - denali->mtd.oobsize - denali->nand.ecc.layout->eccbytes - - denali->bbtskipbytes; /* * Let driver know the total blocks number and how many blocks diff --git a/drivers/mtd/nand/diskonchip.c b/drivers/mtd/nand/diskonchip.c index 0802158..7101c9a 100644 --- a/drivers/mtd/nand/diskonchip.c +++ b/drivers/mtd/nand/diskonchip.c @@ -993,10 +993,34 @@ static int doc200x_correct_data(struct mtd_info *mtd, u_char *dat, * safer. The only problem with it is that any code that parses oobfree must * be able to handle out-of-order segments. */ -static struct nand_ecclayout doc200x_oobinfo = { - .eccbytes = 6, - .eccpos = {0, 1, 2, 3, 4, 5}, - .oobfree = {{8, 8}, {6, 2}} +static int doc200x_eccpos(struct mtd_info *mtd, int eccbyte) +{ + if (eccbyte > 5) + return -ERANGE; + + return eccbyte; +} + +static int doc200x_oobfree(struct mtd_info *mtd, int section, + struct nand_oobfree *oobfree) +{ + if (section > 1) + return -ERANGE; + + if (!section) { + oobfree->offset = 8; + oobfree->length = 8; + } else { + oobfree->offset = 6; + oobfree->length = 2; + } + + return 0; +} + +static const struct mtd_ooblayout_ops doc200x_ooblayout_ops = { + .eccpos = doc200x_eccpos, + .oobfree = doc200x_oobfree, }; /* Find the (I)NFTL Media Header, and optionally also the mirror media header. @@ -1571,6 +1595,7 @@ static int __init doc_probe(unsigned long physadr) mtd->priv = nand; mtd->owner = THIS_MODULE; + mtd_set_ooblayout(mtd, &doc200x_ooblayout_ops); nand->priv = doc; nand->select_chip = doc200x_select_chip; @@ -1582,7 +1607,6 @@ static int __init doc_probe(unsigned long physadr) nand->ecc.calculate = doc200x_calculate_ecc; nand->ecc.correct = doc200x_correct_data; - nand->ecc.layout = &doc200x_oobinfo; nand->ecc.mode = NAND_ECC_HW_SYNDROME; nand->ecc.size = 512; nand->ecc.bytes = 6; diff --git a/drivers/mtd/nand/docg4.c b/drivers/mtd/nand/docg4.c index fdce91a..c032536 100644 --- a/drivers/mtd/nand/docg4.c +++ b/drivers/mtd/nand/docg4.c @@ -222,10 +222,29 @@ struct docg4_priv { * Bytes 8 - 14 are hw-generated ecc covering entire page + oob bytes 0 - 14. * Byte 15 (the last) is used by the driver as a "page written" flag. */ -static struct nand_ecclayout docg4_oobinfo = { - .eccbytes = 9, - .eccpos = {7, 8, 9, 10, 11, 12, 13, 14, 15}, - .oobfree = { {.offset = 2, .length = 5} } +static int docg4_eccpos(struct mtd_info *mtd, int eccbyte) +{ + if (eccbyte > 8) + return -ERANGE; + + return eccbyte + 7; +} + +static int docg4_oobfree(struct mtd_info *mtd, int section, + struct nand_oobfree *oobfree) +{ + if (section) + return -ERANGE; + + oobfree->offset = 2; + oobfree->length = 5; + + return 0; +} + +static const struct mtd_ooblayout_ops docg4_ooblayout_ops = { + .eccpos = docg4_eccpos, + .oobfree = docg4_oobfree, }; /* @@ -1209,6 +1228,7 @@ static void __init init_mtd_structs(struct mtd_info *mtd) mtd->writesize = DOCG4_PAGE_SIZE; mtd->erasesize = DOCG4_BLOCK_SIZE; mtd->oobsize = DOCG4_OOB_SIZE; + mtd_set_ooblayout(mtd, &docg4_ooblayout_ops); nand->chipsize = DOCG4_CHIP_SIZE; nand->chip_shift = DOCG4_CHIP_SHIFT; nand->bbt_erase_shift = nand->phys_erase_shift = DOCG4_ERASE_SHIFT; @@ -1217,7 +1237,6 @@ static void __init init_mtd_structs(struct mtd_info *mtd) nand->pagemask = 0x3ffff; nand->badblockpos = NAND_LARGE_BADBLOCK_POS; nand->badblockbits = 8; - nand->ecc.layout = &docg4_oobinfo; nand->ecc.mode = NAND_ECC_HW_SYNDROME; nand->ecc.size = DOCG4_PAGE_SIZE; nand->ecc.prepad = 8; diff --git a/drivers/mtd/nand/fsl_elbc_nand.c b/drivers/mtd/nand/fsl_elbc_nand.c index bd6d493..716ecb3 100644 --- a/drivers/mtd/nand/fsl_elbc_nand.c +++ b/drivers/mtd/nand/fsl_elbc_nand.c @@ -80,32 +80,53 @@ struct fsl_elbc_fcm_ctrl { /* These map to the positions used by the FCM hardware ECC generator */ -/* Small Page FLASH with FMR[ECCM] = 0 */ -static struct nand_ecclayout fsl_elbc_oob_sp_eccm0 = { - .eccbytes = 3, - .eccpos = {6, 7, 8}, - .oobfree = { {0, 5}, {9, 7} }, -}; +static int fsl_elbc_eccpos(struct mtd_info *mtd, int eccbyte) +{ + struct nand_chip *chip = mtd_to_nand(mtd); + struct fsl_elbc_mtd *priv = chip->priv; + int eccbytes = chip->ecc.bytes * chip->ecc.steps; + int eccpos; -/* Small Page FLASH with FMR[ECCM] = 1 */ -static struct nand_ecclayout fsl_elbc_oob_sp_eccm1 = { - .eccbytes = 3, - .eccpos = {8, 9, 10}, - .oobfree = { {0, 5}, {6, 2}, {11, 5} }, -}; + if (eccbyte >= eccbytes) + return -ERANGE; -/* Large Page FLASH with FMR[ECCM] = 0 */ -static struct nand_ecclayout fsl_elbc_oob_lp_eccm0 = { - .eccbytes = 12, - .eccpos = {6, 7, 8, 22, 23, 24, 38, 39, 40, 54, 55, 56}, - .oobfree = { {1, 5}, {9, 13}, {25, 13}, {41, 13}, {57, 7} }, -}; + eccpos = ((eccbyte / chip->ecc.bytes) * 16) + + (eccbyte % chip->ecc.bytes) + 6; + if (priv->fmr & FMR_ECCM) + eccpos += 2; + + return eccpos; +} + +static int fsl_elbc_oobfree(struct mtd_info *mtd, int section, + struct nand_oobfree *oobfree) +{ + struct nand_chip *chip = mtd_to_nand(mtd); + struct fsl_elbc_mtd *priv = chip->priv; -/* Large Page FLASH with FMR[ECCM] = 1 */ -static struct nand_ecclayout fsl_elbc_oob_lp_eccm1 = { - .eccbytes = 12, - .eccpos = {8, 9, 10, 24, 25, 26, 40, 41, 42, 56, 57, 58}, - .oobfree = { {1, 7}, {11, 13}, {27, 13}, {43, 13}, {59, 5} }, + if (section > chip->ecc.steps) + return -ERANGE; + + if (!section) { + oobfree->offset = 0; + if (mtd->writesize > 512) + oobfree->offset++; + oobfree->length = (priv->fmr & FMR_ECCM) ? 7 : 5; + } else { + oobfree->offset = (16 * section) - + ((priv->fmr & FMR_ECCM) ? 5 : 7); + if (section < chip->ecc.steps) + oobfree->length = 13; + else + oobfree->length = mtd->oobsize - oobfree->offset; + } + + return 0; +} + +static const struct mtd_ooblayout_ops fsl_elbc_ooblayout_ops = { + .eccpos = fsl_elbc_eccpos, + .oobfree = fsl_elbc_oobfree, }; /* @@ -676,14 +697,6 @@ static int fsl_elbc_chip_init_tail(struct mtd_info *mtd) } else if (mtd->writesize == 2048) { priv->page_size = 1; setbits32(&lbc->bank[priv->bank].or, OR_FCM_PGS); - /* adjust ecc setup if needed */ - if ((in_be32(&lbc->bank[priv->bank].br) & BR_DECC) == - BR_DECC_CHK_GEN) { - chip->ecc.size = 512; - chip->ecc.layout = (priv->fmr & FMR_ECCM) ? - &fsl_elbc_oob_lp_eccm1 : - &fsl_elbc_oob_lp_eccm0; - } } else { dev_err(priv->dev, "fsl_elbc_init: page size %d is not supported\n", @@ -781,9 +794,7 @@ static int fsl_elbc_chip_init(struct fsl_elbc_mtd *priv) if ((in_be32(&lbc->bank[priv->bank].br) & BR_DECC) == BR_DECC_CHK_GEN) { chip->ecc.mode = NAND_ECC_HW; - /* put in small page settings and adjust later if needed */ - chip->ecc.layout = (priv->fmr & FMR_ECCM) ? - &fsl_elbc_oob_sp_eccm1 : &fsl_elbc_oob_sp_eccm0; + mtd_set_ooblayout(&priv->mtd, &fsl_elbc_ooblayout_op); chip->ecc.size = 512; chip->ecc.bytes = 3; chip->ecc.strength = 1; diff --git a/drivers/mtd/nand/fsl_ifc_nand.c b/drivers/mtd/nand/fsl_ifc_nand.c index 610308e..fbd2548 100644 --- a/drivers/mtd/nand/fsl_ifc_nand.c +++ b/drivers/mtd/nand/fsl_ifc_nand.c @@ -68,136 +68,6 @@ struct fsl_ifc_nand_ctrl { static struct fsl_ifc_nand_ctrl *ifc_nand_ctrl; -/* 512-byte page with 4-bit ECC, 8-bit */ -static struct nand_ecclayout oob_512_8bit_ecc4 = { - .eccbytes = 8, - .eccpos = {8, 9, 10, 11, 12, 13, 14, 15}, - .oobfree = { {0, 5}, {6, 2} }, -}; - -/* 512-byte page with 4-bit ECC, 16-bit */ -static struct nand_ecclayout oob_512_16bit_ecc4 = { - .eccbytes = 8, - .eccpos = {8, 9, 10, 11, 12, 13, 14, 15}, - .oobfree = { {2, 6}, }, -}; - -/* 2048-byte page size with 4-bit ECC */ -static struct nand_ecclayout oob_2048_ecc4 = { - .eccbytes = 32, - .eccpos = { - 8, 9, 10, 11, 12, 13, 14, 15, - 16, 17, 18, 19, 20, 21, 22, 23, - 24, 25, 26, 27, 28, 29, 30, 31, - 32, 33, 34, 35, 36, 37, 38, 39, - }, - .oobfree = { {2, 6}, {40, 24} }, -}; - -/* 4096-byte page size with 4-bit ECC */ -static struct nand_ecclayout oob_4096_ecc4 = { - .eccbytes = 64, - .eccpos = { - 8, 9, 10, 11, 12, 13, 14, 15, - 16, 17, 18, 19, 20, 21, 22, 23, - 24, 25, 26, 27, 28, 29, 30, 31, - 32, 33, 34, 35, 36, 37, 38, 39, - 40, 41, 42, 43, 44, 45, 46, 47, - 48, 49, 50, 51, 52, 53, 54, 55, - 56, 57, 58, 59, 60, 61, 62, 63, - 64, 65, 66, 67, 68, 69, 70, 71, - }, - .oobfree = { {2, 6}, {72, 56} }, -}; - -/* 4096-byte page size with 8-bit ECC -- requires 218-byte OOB */ -static struct nand_ecclayout oob_4096_ecc8 = { - .eccbytes = 128, - .eccpos = { - 8, 9, 10, 11, 12, 13, 14, 15, - 16, 17, 18, 19, 20, 21, 22, 23, - 24, 25, 26, 27, 28, 29, 30, 31, - 32, 33, 34, 35, 36, 37, 38, 39, - 40, 41, 42, 43, 44, 45, 46, 47, - 48, 49, 50, 51, 52, 53, 54, 55, - 56, 57, 58, 59, 60, 61, 62, 63, - 64, 65, 66, 67, 68, 69, 70, 71, - 72, 73, 74, 75, 76, 77, 78, 79, - 80, 81, 82, 83, 84, 85, 86, 87, - 88, 89, 90, 91, 92, 93, 94, 95, - 96, 97, 98, 99, 100, 101, 102, 103, - 104, 105, 106, 107, 108, 109, 110, 111, - 112, 113, 114, 115, 116, 117, 118, 119, - 120, 121, 122, 123, 124, 125, 126, 127, - 128, 129, 130, 131, 132, 133, 134, 135, - }, - .oobfree = { {2, 6}, {136, 82} }, -}; - -/* 8192-byte page size with 4-bit ECC */ -static struct nand_ecclayout oob_8192_ecc4 = { - .eccbytes = 128, - .eccpos = { - 8, 9, 10, 11, 12, 13, 14, 15, - 16, 17, 18, 19, 20, 21, 22, 23, - 24, 25, 26, 27, 28, 29, 30, 31, - 32, 33, 34, 35, 36, 37, 38, 39, - 40, 41, 42, 43, 44, 45, 46, 47, - 48, 49, 50, 51, 52, 53, 54, 55, - 56, 57, 58, 59, 60, 61, 62, 63, - 64, 65, 66, 67, 68, 69, 70, 71, - 72, 73, 74, 75, 76, 77, 78, 79, - 80, 81, 82, 83, 84, 85, 86, 87, - 88, 89, 90, 91, 92, 93, 94, 95, - 96, 97, 98, 99, 100, 101, 102, 103, - 104, 105, 106, 107, 108, 109, 110, 111, - 112, 113, 114, 115, 116, 117, 118, 119, - 120, 121, 122, 123, 124, 125, 126, 127, - 128, 129, 130, 131, 132, 133, 134, 135, - }, - .oobfree = { {2, 6}, {136, 208} }, -}; - -/* 8192-byte page size with 8-bit ECC -- requires 218-byte OOB */ -static struct nand_ecclayout oob_8192_ecc8 = { - .eccbytes = 256, - .eccpos = { - 8, 9, 10, 11, 12, 13, 14, 15, - 16, 17, 18, 19, 20, 21, 22, 23, - 24, 25, 26, 27, 28, 29, 30, 31, - 32, 33, 34, 35, 36, 37, 38, 39, - 40, 41, 42, 43, 44, 45, 46, 47, - 48, 49, 50, 51, 52, 53, 54, 55, - 56, 57, 58, 59, 60, 61, 62, 63, - 64, 65, 66, 67, 68, 69, 70, 71, - 72, 73, 74, 75, 76, 77, 78, 79, - 80, 81, 82, 83, 84, 85, 86, 87, - 88, 89, 90, 91, 92, 93, 94, 95, - 96, 97, 98, 99, 100, 101, 102, 103, - 104, 105, 106, 107, 108, 109, 110, 111, - 112, 113, 114, 115, 116, 117, 118, 119, - 120, 121, 122, 123, 124, 125, 126, 127, - 128, 129, 130, 131, 132, 133, 134, 135, - 136, 137, 138, 139, 140, 141, 142, 143, - 144, 145, 146, 147, 148, 149, 150, 151, - 152, 153, 154, 155, 156, 157, 158, 159, - 160, 161, 162, 163, 164, 165, 166, 167, - 168, 169, 170, 171, 172, 173, 174, 175, - 176, 177, 178, 179, 180, 181, 182, 183, - 184, 185, 186, 187, 188, 189, 190, 191, - 192, 193, 194, 195, 196, 197, 198, 199, - 200, 201, 202, 203, 204, 205, 206, 207, - 208, 209, 210, 211, 212, 213, 214, 215, - 216, 217, 218, 219, 220, 221, 222, 223, - 224, 225, 226, 227, 228, 229, 230, 231, - 232, 233, 234, 235, 236, 237, 238, 239, - 240, 241, 242, 243, 244, 245, 246, 247, - 248, 249, 250, 251, 252, 253, 254, 255, - 256, 257, 258, 259, 260, 261, 262, 263, - }, - .oobfree = { {2, 6}, {264, 80} }, -}; - /* * Generic flash bbt descriptors */ @@ -224,6 +94,55 @@ static struct nand_bbt_descr bbt_mirror_descr = { .pattern = mirror_pattern, }; +static int fsl_ifc_eccpos(struct mtd_info *mtd, int eccbyte) +{ + struct nand_chip *chip = mtd_to_nand(mtd); + int eccbytes = chip->ecc.bytes * chip->ecc.steps; + + if (eccbyte >= eccbytes) + return -ERANGE; + + return eccbyte + 8; +} + +static int fsl_ifc_oobfree(struct mtd_info *mtd, int section, + struct nand_oobfree *oobfree) +{ + struct nand_chip *chip = mtd_to_nand(mtd); + int eccbytes = chip->ecc.bytes * chip->ecc.steps; + + if (section > 1) + return -ERANGE; + + if (mtd->writesize == 512 && + !(chip->options & NAND_BUSWIDTH_16)) { + if (!section) { + oobfree->offset = 0; + oobfree->length = 5; + } else { + oobfree->offset = 6; + oobfree->length = 2; + } + + return 0; + } + + if (!section) { + oobfree->offset = 2; + oobfree->length = 6; + } else { + oobfree->offset = eccbytes + 8; + oobfree->length = mtd->oobsize - oobfree->offset; + } + + return 0; +} + +static const struct mtd_ooblayout_ops fsl_ifc_ooblayout_ops = { + .eccpos = fsl_ifc_eccpos, + .oobfree = fsl_ifc_oobfree, +}; + /* * Set up the IFC hardware block and page address fields, and the ifc nand * structure addr field to point to the correct IFC buffer in memory @@ -877,7 +796,6 @@ static int fsl_ifc_chip_init(struct fsl_ifc_mtd *priv) struct fsl_ifc_ctrl *ctrl = priv->ctrl; struct fsl_ifc_regs __iomem *ifc = ctrl->regs; struct nand_chip *chip = &priv->chip; - struct nand_ecclayout *layout; u32 csor; /* Fill in fsl_ifc_mtd structure */ @@ -922,18 +840,9 @@ static int fsl_ifc_chip_init(struct fsl_ifc_mtd *priv) csor = ifc_in32(&ifc->csor_cs[priv->bank].csor); - /* Hardware generates ECC per 512 Bytes */ - chip->ecc.size = 512; - chip->ecc.bytes = 8; - chip->ecc.strength = 4; - switch (csor & CSOR_NAND_PGS_MASK) { case CSOR_NAND_PGS_512: - if (chip->options & NAND_BUSWIDTH_16) { - layout = &oob_512_16bit_ecc4; - } else { - layout = &oob_512_8bit_ecc4; - + if (!(chip->options & NAND_BUSWIDTH_16)) { /* Avoid conflict with bad block marker */ bbt_main_descr.offs = 0; bbt_mirror_descr.offs = 0; @@ -943,35 +852,16 @@ static int fsl_ifc_chip_init(struct fsl_ifc_mtd *priv) break; case CSOR_NAND_PGS_2K: - layout = &oob_2048_ecc4; priv->bufnum_mask = 3; break; case CSOR_NAND_PGS_4K: - if ((csor & CSOR_NAND_ECC_MODE_MASK) == - CSOR_NAND_ECC_MODE_4) { - layout = &oob_4096_ecc4; - } else { - layout = &oob_4096_ecc8; - chip->ecc.bytes = 16; - chip->ecc.strength = 8; - } - priv->bufnum_mask = 1; break; case CSOR_NAND_PGS_8K: - if ((csor & CSOR_NAND_ECC_MODE_MASK) == - CSOR_NAND_ECC_MODE_4) { - layout = &oob_8192_ecc4; - } else { - layout = &oob_8192_ecc8; - chip->ecc.bytes = 16; - chip->ecc.strength = 8; - } - priv->bufnum_mask = 0; - break; + break; default: dev_err(priv->dev, "bad csor %#x: bad page size\n", csor); @@ -981,7 +871,17 @@ static int fsl_ifc_chip_init(struct fsl_ifc_mtd *priv) /* Must also set CSOR_NAND_ECC_ENC_EN if DEC_EN set */ if (csor & CSOR_NAND_ECC_DEC_EN) { chip->ecc.mode = NAND_ECC_HW; - chip->ecc.layout = layout; + mtd_set_ooblayout(&priv->mtd, &fsl_ifc_ooblayout_ops); + + /* Hardware generates ECC per 512 Bytes */ + chip->ecc.size = 512; + if ((csor & CSOR_NAND_ECC_MODE_MASK) == CSOR_NAND_ECC_MODE_4) { + chip->ecc.bytes = 8; + chip->ecc.strength = 4; + } else { + chip->ecc.bytes = 16; + chip->ecc.strength = 8; + } } else { chip->ecc.mode = NAND_ECC_SOFT; } diff --git a/drivers/mtd/nand/fsmc_nand.c b/drivers/mtd/nand/fsmc_nand.c index 59fc6d0..14fd7f6 100644 --- a/drivers/mtd/nand/fsmc_nand.c +++ b/drivers/mtd/nand/fsmc_nand.c @@ -39,212 +39,6 @@ #include <linux/amba/bus.h> #include <mtd/mtd-abi.h> -static struct nand_ecclayout fsmc_ecc1_128_layout = { - .eccbytes = 24, - .eccpos = {2, 3, 4, 18, 19, 20, 34, 35, 36, 50, 51, 52, - 66, 67, 68, 82, 83, 84, 98, 99, 100, 114, 115, 116}, - .oobfree = { - {.offset = 8, .length = 8}, - {.offset = 24, .length = 8}, - {.offset = 40, .length = 8}, - {.offset = 56, .length = 8}, - {.offset = 72, .length = 8}, - {.offset = 88, .length = 8}, - {.offset = 104, .length = 8}, - {.offset = 120, .length = 8} - } -}; - -static struct nand_ecclayout fsmc_ecc1_64_layout = { - .eccbytes = 12, - .eccpos = {2, 3, 4, 18, 19, 20, 34, 35, 36, 50, 51, 52}, - .oobfree = { - {.offset = 8, .length = 8}, - {.offset = 24, .length = 8}, - {.offset = 40, .length = 8}, - {.offset = 56, .length = 8}, - } -}; - -static struct nand_ecclayout fsmc_ecc1_16_layout = { - .eccbytes = 3, - .eccpos = {2, 3, 4}, - .oobfree = { - {.offset = 8, .length = 8}, - } -}; - -/* - * ECC4 layout for NAND of pagesize 8192 bytes & OOBsize 256 bytes. 13*16 bytes - * of OB size is reserved for ECC, Byte no. 0 & 1 reserved for bad block and 46 - * bytes are free for use. - */ -static struct nand_ecclayout fsmc_ecc4_256_layout = { - .eccbytes = 208, - .eccpos = { 2, 3, 4, 5, 6, 7, 8, - 9, 10, 11, 12, 13, 14, - 18, 19, 20, 21, 22, 23, 24, - 25, 26, 27, 28, 29, 30, - 34, 35, 36, 37, 38, 39, 40, - 41, 42, 43, 44, 45, 46, - 50, 51, 52, 53, 54, 55, 56, - 57, 58, 59, 60, 61, 62, - 66, 67, 68, 69, 70, 71, 72, - 73, 74, 75, 76, 77, 78, - 82, 83, 84, 85, 86, 87, 88, - 89, 90, 91, 92, 93, 94, - 98, 99, 100, 101, 102, 103, 104, - 105, 106, 107, 108, 109, 110, - 114, 115, 116, 117, 118, 119, 120, - 121, 122, 123, 124, 125, 126, - 130, 131, 132, 133, 134, 135, 136, - 137, 138, 139, 140, 141, 142, - 146, 147, 148, 149, 150, 151, 152, - 153, 154, 155, 156, 157, 158, - 162, 163, 164, 165, 166, 167, 168, - 169, 170, 171, 172, 173, 174, - 178, 179, 180, 181, 182, 183, 184, - 185, 186, 187, 188, 189, 190, - 194, 195, 196, 197, 198, 199, 200, - 201, 202, 203, 204, 205, 206, - 210, 211, 212, 213, 214, 215, 216, - 217, 218, 219, 220, 221, 222, - 226, 227, 228, 229, 230, 231, 232, - 233, 234, 235, 236, 237, 238, - 242, 243, 244, 245, 246, 247, 248, - 249, 250, 251, 252, 253, 254 - }, - .oobfree = { - {.offset = 15, .length = 3}, - {.offset = 31, .length = 3}, - {.offset = 47, .length = 3}, - {.offset = 63, .length = 3}, - {.offset = 79, .length = 3}, - {.offset = 95, .length = 3}, - {.offset = 111, .length = 3}, - {.offset = 127, .length = 3}, - {.offset = 143, .length = 3}, - {.offset = 159, .length = 3}, - {.offset = 175, .length = 3}, - {.offset = 191, .length = 3}, - {.offset = 207, .length = 3}, - {.offset = 223, .length = 3}, - {.offset = 239, .length = 3}, - {.offset = 255, .length = 1} - } -}; - -/* - * ECC4 layout for NAND of pagesize 4096 bytes & OOBsize 224 bytes. 13*8 bytes - * of OOB size is reserved for ECC, Byte no. 0 & 1 reserved for bad block & 118 - * bytes are free for use. - */ -static struct nand_ecclayout fsmc_ecc4_224_layout = { - .eccbytes = 104, - .eccpos = { 2, 3, 4, 5, 6, 7, 8, - 9, 10, 11, 12, 13, 14, - 18, 19, 20, 21, 22, 23, 24, - 25, 26, 27, 28, 29, 30, - 34, 35, 36, 37, 38, 39, 40, - 41, 42, 43, 44, 45, 46, - 50, 51, 52, 53, 54, 55, 56, - 57, 58, 59, 60, 61, 62, - 66, 67, 68, 69, 70, 71, 72, - 73, 74, 75, 76, 77, 78, - 82, 83, 84, 85, 86, 87, 88, - 89, 90, 91, 92, 93, 94, - 98, 99, 100, 101, 102, 103, 104, - 105, 106, 107, 108, 109, 110, - 114, 115, 116, 117, 118, 119, 120, - 121, 122, 123, 124, 125, 126 - }, - .oobfree = { - {.offset = 15, .length = 3}, - {.offset = 31, .length = 3}, - {.offset = 47, .length = 3}, - {.offset = 63, .length = 3}, - {.offset = 79, .length = 3}, - {.offset = 95, .length = 3}, - {.offset = 111, .length = 3}, - {.offset = 127, .length = 97} - } -}; - -/* - * ECC4 layout for NAND of pagesize 4096 bytes & OOBsize 128 bytes. 13*8 bytes - * of OOB size is reserved for ECC, Byte no. 0 & 1 reserved for bad block & 22 - * bytes are free for use. - */ -static struct nand_ecclayout fsmc_ecc4_128_layout = { - .eccbytes = 104, - .eccpos = { 2, 3, 4, 5, 6, 7, 8, - 9, 10, 11, 12, 13, 14, - 18, 19, 20, 21, 22, 23, 24, - 25, 26, 27, 28, 29, 30, - 34, 35, 36, 37, 38, 39, 40, - 41, 42, 43, 44, 45, 46, - 50, 51, 52, 53, 54, 55, 56, - 57, 58, 59, 60, 61, 62, - 66, 67, 68, 69, 70, 71, 72, - 73, 74, 75, 76, 77, 78, - 82, 83, 84, 85, 86, 87, 88, - 89, 90, 91, 92, 93, 94, - 98, 99, 100, 101, 102, 103, 104, - 105, 106, 107, 108, 109, 110, - 114, 115, 116, 117, 118, 119, 120, - 121, 122, 123, 124, 125, 126 - }, - .oobfree = { - {.offset = 15, .length = 3}, - {.offset = 31, .length = 3}, - {.offset = 47, .length = 3}, - {.offset = 63, .length = 3}, - {.offset = 79, .length = 3}, - {.offset = 95, .length = 3}, - {.offset = 111, .length = 3}, - {.offset = 127, .length = 1} - } -}; - -/* - * ECC4 layout for NAND of pagesize 2048 bytes & OOBsize 64 bytes. 13*4 bytes of - * OOB size is reserved for ECC, Byte no. 0 & 1 reserved for bad block and 10 - * bytes are free for use. - */ -static struct nand_ecclayout fsmc_ecc4_64_layout = { - .eccbytes = 52, - .eccpos = { 2, 3, 4, 5, 6, 7, 8, - 9, 10, 11, 12, 13, 14, - 18, 19, 20, 21, 22, 23, 24, - 25, 26, 27, 28, 29, 30, - 34, 35, 36, 37, 38, 39, 40, - 41, 42, 43, 44, 45, 46, - 50, 51, 52, 53, 54, 55, 56, - 57, 58, 59, 60, 61, 62, - }, - .oobfree = { - {.offset = 15, .length = 3}, - {.offset = 31, .length = 3}, - {.offset = 47, .length = 3}, - {.offset = 63, .length = 1}, - } -}; - -/* - * ECC4 layout for NAND of pagesize 512 bytes & OOBsize 16 bytes. 13 bytes of - * OOB size is reserved for ECC, Byte no. 4 & 5 reserved for bad block and One - * byte is free for use. - */ -static struct nand_ecclayout fsmc_ecc4_16_layout = { - .eccbytes = 13, - .eccpos = { 0, 1, 2, 3, 6, 7, 8, - 9, 10, 11, 12, 13, 14 - }, - .oobfree = { - {.offset = 15, .length = 1}, - } -}; - /* * ECC placement definitions in oobfree type format. * There are 13 bytes of ecc for every 512 byte block and it has to be read @@ -274,6 +68,80 @@ static struct fsmc_eccplace fsmc_ecc4_sp_place = { } }; +static int fsmc_ecc1_eccpos(struct mtd_info *mtd, int eccbyte) +{ + struct nand_chip *chip = mtd_to_nand(mtd); + int eccbytes = chip->ecc.bytes * chip->ecc.steps; + + if (eccbyte >= eccbytes) + return -ERANGE; + + return ((eccbyte / 3) * 16) + (eccbyte % 3) + 2; +} + +static int fsmc_ecc1_oobfree(struct mtd_info *mtd, int section, + struct nand_oobfree *oobfree) +{ + struct nand_chip *chip = mtd_to_nand(mtd); + + if (section >= chip->ecc.steps) + return -ERANGE; + + oobfree->offset = (section * 16) + 8; + + if (section < chip->ecc.steps - 1) + oobfree->length = 8; + else + oobfree->length = mtd->oobsize - oobfree->offset; + + return 0; +} + +static const struct mtd_ooblayout_ops fsmc_ecc1_ooblayout_ops = { + .eccpos = fsmc_ecc1_eccpos, + .oobfree = fsmc_ecc1_oobfree, +}; + +static int fsmc_ecc4_eccpos(struct mtd_info *mtd, int eccbyte) +{ + struct nand_chip *chip = mtd_to_nand(mtd); + int eccbytes = chip->ecc.bytes * chip->ecc.steps; + + if (eccbyte >= eccbytes) + return -ERANGE; + + if (mtd->writesize > 512) + return ((eccbyte / 13) * 16) + (eccbyte % 13) + 2; + + if (eccbyte < 4) + return eccbyte; + + return eccbyte + 2; +} + +static int fsmc_ecc4_oobfree(struct mtd_info *mtd, int section, + struct nand_oobfree *oobfree) +{ + struct nand_chip *chip = mtd_to_nand(mtd); + + if (section >= chip->ecc.steps) + return -ERANGE; + + oobfree->offset = (section * 16) + 15; + + if (section < chip->ecc.steps - 1) + oobfree->length = 3; + else + oobfree->length = mtd->oobsize - oobfree->offset; + + return 0; +} + +static const struct mtd_ooblayout_ops fsmc_ecc4_ooblayout_ops = { + .eccpos = fsmc_ecc4_eccpos, + .oobfree = fsmc_ecc4_oobfree, +}; + /** * struct fsmc_nand_data - structure for FSMC NAND device state * @@ -1089,23 +957,18 @@ static int __init fsmc_nand_probe(struct platform_device *pdev) if (AMBA_REV_BITS(host->pid) >= 8) { switch (host->mtd.oobsize) { case 16: - nand->ecc.layout = &fsmc_ecc4_16_layout; host->ecc_place = &fsmc_ecc4_sp_place; break; case 64: - nand->ecc.layout = &fsmc_ecc4_64_layout; host->ecc_place = &fsmc_ecc4_lp_place; break; case 128: - nand->ecc.layout = &fsmc_ecc4_128_layout; host->ecc_place = &fsmc_ecc4_lp_place; break; case 224: - nand->ecc.layout = &fsmc_ecc4_224_layout; host->ecc_place = &fsmc_ecc4_lp_place; break; case 256: - nand->ecc.layout = &fsmc_ecc4_256_layout; host->ecc_place = &fsmc_ecc4_lp_place; break; default: @@ -1114,6 +977,8 @@ static int __init fsmc_nand_probe(struct platform_device *pdev) ret = -EINVAL; goto err_probe; } + + mtd_set_ooblayout(mtd, &fsmc_ecc4_ooblayout_ops); } else { switch (nand->ecc.mode) { case NAND_ECC_HW: @@ -1140,13 +1005,10 @@ static int __init fsmc_nand_probe(struct platform_device *pdev) if (nand->ecc.mode != NAND_ECC_SOFT_BCH) { switch (host->mtd.oobsize) { case 16: - nand->ecc.layout = &fsmc_ecc1_16_layout; - break; case 64: - nand->ecc.layout = &fsmc_ecc1_64_layout; - break; case 128: - nand->ecc.layout = &fsmc_ecc1_128_layout; + mtd_set_ooblayout(mtd, + &fsmc_ecc1_ooblayout_ops); break; default: dev_warn(&pdev->dev, diff --git a/drivers/mtd/nand/gpmi-nand/gpmi-nand.c b/drivers/mtd/nand/gpmi-nand/gpmi-nand.c index c208f5e..9894843 100644 --- a/drivers/mtd/nand/gpmi-nand/gpmi-nand.c +++ b/drivers/mtd/nand/gpmi-nand/gpmi-nand.c @@ -47,10 +47,41 @@ static struct nand_bbt_descr gpmi_bbt_descr = { * We may change the layout if we can get the ECC info from the datasheet, * else we will use all the (page + OOB). */ -static struct nand_ecclayout gpmi_hw_ecclayout = { - .eccbytes = 0, - .eccpos = { 0, }, - .oobfree = { {.offset = 0, .length = 0} } +static int gpmi_eccpos(struct mtd_info *mtd, int eccbyte) +{ + struct nand_chip *chip = mtd_to_nand(mtd); + struct gpmi_nand_data *this = chip->priv; + struct bch_geometry *geo = &this->bch_geometry; + int eccbytes = geo->page_size - mtd->writesize; + + if (eccbyte >= eccbytes) + return -ERANGE; + + return eccbyte; +} + +static int gpmi_oobfree(struct mtd_info *mtd, int section, + struct nand_oobfree *oobfree) +{ + struct nand_chip *chip = mtd_to_nand(mtd); + struct gpmi_nand_data *this = chip->priv; + struct bch_geometry *geo = &this->bch_geometry; + + if (section) + return -ERANGE; + + /* The available oob size we have. */ + if (geo->page_size < mtd->writesize + mtd->oobsize) { + oobfree->offset = geo->page_size - mtd->writesize; + oobfree->length = mtd->oobsize - oobfree->offset; + } + + return 0; +} + +static const struct mtd_ooblayout_ops gpmi_ooblayout_ops = { + .eccpos = gpmi_eccpos, + .oobfree = gpmi_oobfree, }; static const struct gpmi_devdata gpmi_devdata_imx23 = { @@ -141,7 +172,6 @@ static bool set_geometry_by_ecc_info(struct gpmi_nand_data *this) struct bch_geometry *geo = &this->bch_geometry; struct mtd_info *mtd = &this->mtd; struct nand_chip *chip = mtd->priv; - struct nand_oobfree *of = gpmi_hw_ecclayout.oobfree; unsigned int block_mark_bit_offset; if (!(chip->ecc_strength_ds > 0 && chip->ecc_step_ds > 0)) @@ -229,12 +259,6 @@ static bool set_geometry_by_ecc_info(struct gpmi_nand_data *this) geo->page_size = mtd->writesize + geo->metadata_size + (geo->gf_len * geo->ecc_strength * geo->ecc_chunk_count) / 8; - /* The available oob size we have. */ - if (geo->page_size < mtd->writesize + mtd->oobsize) { - of->offset = geo->page_size - mtd->writesize; - of->length = mtd->oobsize - of->offset; - } - geo->payload_size = mtd->writesize; geo->auxiliary_status_offset = ALIGN(geo->metadata_size, 4); @@ -1861,7 +1885,7 @@ static int gpmi_init_last(struct gpmi_nand_data *this) ecc->mode = NAND_ECC_HW; ecc->size = bch_geo->ecc_chunk_size; ecc->strength = bch_geo->ecc_strength; - ecc->layout = &gpmi_hw_ecclayout; + mtd_set_ooblayout(mtd, &gpmi_ooblayout_ops); /* * We only enable the subpage read when: diff --git a/drivers/mtd/nand/hisi504_nand.c b/drivers/mtd/nand/hisi504_nand.c index 32a5a4c..dd12cd7 100644 --- a/drivers/mtd/nand/hisi504_nand.c +++ b/drivers/mtd/nand/hisi504_nand.c @@ -632,8 +632,28 @@ static void hisi_nfc_host_init(struct hinfc_host *host) hinfc_write(host, HINFC504_INTEN_DMA, HINFC504_INTEN); } -static struct nand_ecclayout nand_ecc_2K_16bits = { - .oobfree = { {2, 6} }, +static int hisi_eccpos(struct mtd_info *mtd, int eccbyte) +{ + /* FIXME: add real eccpos definition. */ + return 0; +} + +static int hisi_oobfree(struct mtd_info *mtd, int section, + struct nand_oobfree *oobfree) +{ + /* FIXME: add full oobfree definition. */ + if (section) + return -ERANGE; + + oobfree->offset = 2; + oobfree->length = 6; + + return 0; +} + +static const struct mtd_ooblayout_ops hisi_ooblayout_ops = { + .eccpos = hisi_eccpos, + .oobfree = hisi_oobfree, }; static int hisi_nfc_ecc_probe(struct hinfc_host *host) @@ -669,7 +689,7 @@ static int hisi_nfc_ecc_probe(struct hinfc_host *host) case 16: ecc_bits = 6; if (mtd->writesize == 2048) - chip->ecc.layout = &nand_ecc_2K_16bits; + mtd_set_ooblayout(mtd, &hisi_ooblayout_ops); /* TODO: add more page size support */ break; diff --git a/drivers/mtd/nand/jz4740_nand.c b/drivers/mtd/nand/jz4740_nand.c index c4fe446..ec8bd6d 100644 --- a/drivers/mtd/nand/jz4740_nand.c +++ b/drivers/mtd/nand/jz4740_nand.c @@ -495,7 +495,7 @@ static int jz_nand_probe(struct platform_device *pdev) } if (pdata && pdata->ident_callback) { - pdata->ident_callback(pdev, chip, &pdata->partitions, + pdata->ident_callback(pdev, mtd, &pdata->partitions, &pdata->num_partitions); } diff --git a/drivers/mtd/nand/lpc32xx_mlc.c b/drivers/mtd/nand/lpc32xx_mlc.c index 0ee81a0..80f66ac 100644 --- a/drivers/mtd/nand/lpc32xx_mlc.c +++ b/drivers/mtd/nand/lpc32xx_mlc.c @@ -139,22 +139,36 @@ struct lpc32xx_nand_cfg_mlc { unsigned num_parts; }; -static struct nand_ecclayout lpc32xx_nand_oob = { - .eccbytes = 40, - .eccpos = { 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, - 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, - 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, - 54, 55, 56, 57, 58, 59, 60, 61, 62, 63 }, - .oobfree = { - { .offset = 0, - .length = 6, }, - { .offset = 16, - .length = 6, }, - { .offset = 32, - .length = 6, }, - { .offset = 48, - .length = 6, }, - }, +static int lpc32xx_eccpos(struct mtd_info *mtd, int eccbyte) +{ + struct nand_chip *nand_chip = mtd->priv; + int eccbytes = nand_chip->ecc.steps * nand_chip->ecc.bytes; + int off = 16 - nand_chip->ecc.bytes; + + if (eccbyte >= eccbytes) + return -ERANGE; + + return ((eccbyte / nand_chip->ecc.bytes) * 16) + off + + (eccbyte % nand_chip->ecc.bytes); +} + +static int lpc32xx_oobfree(struct mtd_info *mtd, int section, + struct nand_oobfree *oobfree) +{ + struct nand_chip *nand_chip = mtd->priv; + + if (section >= nand_chip->ecc.steps) + return -ERANGE; + + oobfree->offset = 16 * section; + oobfree->length = 16 - nand_chip->ecc.bytes; + + return 0; +} + +static const struct mtd_ooblayout_ops lpc32xx_ooblayout_ops = { + .eccpos = lpc32xx_eccpos, + .oobfree = lpc32xx_oobfree, }; static struct nand_bbt_descr lpc32xx_nand_bbt = { @@ -714,6 +728,7 @@ static int lpc32xx_nand_probe(struct platform_device *pdev) nand_chip->ecc.write_oob = lpc32xx_write_oob; nand_chip->ecc.read_oob = lpc32xx_read_oob; nand_chip->ecc.strength = 4; + nand_chip->ecc.bytes = 10; nand_chip->waitfunc = lpc32xx_waitfunc; nand_chip->options = NAND_NO_SUBPAGE_WRITE; @@ -752,7 +767,7 @@ static int lpc32xx_nand_probe(struct platform_device *pdev) nand_chip->ecc.mode = NAND_ECC_HW; nand_chip->ecc.size = 512; - nand_chip->ecc.layout = &lpc32xx_nand_oob; + mtd_set_ooblayout(mtd, &lpc32xx_ooblayout_ops); host->mlcsubpages = mtd->writesize / 512; /* initially clear interrupt status */ diff --git a/drivers/mtd/nand/lpc32xx_slc.c b/drivers/mtd/nand/lpc32xx_slc.c index 47dcfddd..3301c77 100644 --- a/drivers/mtd/nand/lpc32xx_slc.c +++ b/drivers/mtd/nand/lpc32xx_slc.c @@ -146,13 +146,34 @@ * NAND ECC Layout for small page NAND devices * Note: For large and huge page devices, the default layouts are used */ -static struct nand_ecclayout lpc32xx_nand_oob_16 = { - .eccbytes = 6, - .eccpos = {10, 11, 12, 13, 14, 15}, - .oobfree = { - { .offset = 0, .length = 4 }, - { .offset = 6, .length = 4 }, - }, +static int lpc32xx_eccpos(struct mtd_info *mtd, int eccbyte) +{ + if (eccbyte > 5) + return -ERANGE; + + return eccbyte + 10; +} + +static int lpc32xx_oobfree(struct mtd_info *mtd, int section, + struct nand_oobfree *oobfree) +{ + if (section > 1) + return -ERANGE; + + if (!section) { + oobfree->offset = 0; + oobfree->length = 4; + } else { + oobfree->offset = 6; + oobfree->length = 4; + } + + return 0; +} + +static const struct mtd_ooblayout_ops lpc32xx_ooblayout_ops = { + .eccpos = lpc32xx_eccpos, + .oobfree = lpc32xx_oobfree, }; static u8 bbt_pattern[] = {'B', 'b', 't', '0' }; @@ -877,7 +898,7 @@ static int lpc32xx_nand_probe(struct platform_device *pdev) * custom BBT marker layout. */ if (mtd->writesize <= 512) - chip->ecc.layout = &lpc32xx_nand_oob_16; + mtd_set_ooblayout(mtd, &lpc32xx_ooblayout_ops); /* These sizes remain the same regardless of page size */ chip->ecc.size = 256; diff --git a/drivers/mtd/nand/mxc_nand.c b/drivers/mtd/nand/mxc_nand.c index f507d36..7ea9c50 100644 --- a/drivers/mtd/nand/mxc_nand.c +++ b/drivers/mtd/nand/mxc_nand.c @@ -149,7 +149,7 @@ struct mxc_nand_devtype_data { int (*check_int)(struct mxc_nand_host *); void (*irq_control)(struct mxc_nand_host *, int); u32 (*get_ecc_status)(struct mxc_nand_host *); - struct nand_ecclayout *ecclayout_512, *ecclayout_2k, *ecclayout_4k; + const struct mtd_ooblayout_ops *ooblayout; void (*select_chip)(struct mtd_info *mtd, int chip); int (*correct_data)(struct mtd_info *mtd, u_char *dat, u_char *read_ecc, u_char *calc_ecc); @@ -201,73 +201,6 @@ struct mxc_nand_host { struct mxc_nand_platform_data pdata; }; -/* OOB placement block for use with hardware ecc generation */ -static struct nand_ecclayout nandv1_hw_eccoob_smallpage = { - .eccbytes = 5, - .eccpos = {6, 7, 8, 9, 10}, - .oobfree = {{0, 5}, {12, 4}, } -}; - -static struct nand_ecclayout nandv1_hw_eccoob_largepage = { - .eccbytes = 20, - .eccpos = {6, 7, 8, 9, 10, 22, 23, 24, 25, 26, - 38, 39, 40, 41, 42, 54, 55, 56, 57, 58}, - .oobfree = {{2, 4}, {11, 10}, {27, 10}, {43, 10}, {59, 5}, } -}; - -/* OOB description for 512 byte pages with 16 byte OOB */ -static struct nand_ecclayout nandv2_hw_eccoob_smallpage = { - .eccbytes = 1 * 9, - .eccpos = { - 7, 8, 9, 10, 11, 12, 13, 14, 15 - }, - .oobfree = { - {.offset = 0, .length = 5} - } -}; - -/* OOB description for 2048 byte pages with 64 byte OOB */ -static struct nand_ecclayout nandv2_hw_eccoob_largepage = { - .eccbytes = 4 * 9, - .eccpos = { - 7, 8, 9, 10, 11, 12, 13, 14, 15, - 23, 24, 25, 26, 27, 28, 29, 30, 31, - 39, 40, 41, 42, 43, 44, 45, 46, 47, - 55, 56, 57, 58, 59, 60, 61, 62, 63 - }, - .oobfree = { - {.offset = 2, .length = 4}, - {.offset = 16, .length = 7}, - {.offset = 32, .length = 7}, - {.offset = 48, .length = 7} - } -}; - -/* OOB description for 4096 byte pages with 128 byte OOB */ -static struct nand_ecclayout nandv2_hw_eccoob_4k = { - .eccbytes = 8 * 9, - .eccpos = { - 7, 8, 9, 10, 11, 12, 13, 14, 15, - 23, 24, 25, 26, 27, 28, 29, 30, 31, - 39, 40, 41, 42, 43, 44, 45, 46, 47, - 55, 56, 57, 58, 59, 60, 61, 62, 63, - 71, 72, 73, 74, 75, 76, 77, 78, 79, - 87, 88, 89, 90, 91, 92, 93, 94, 95, - 103, 104, 105, 106, 107, 108, 109, 110, 111, - 119, 120, 121, 122, 123, 124, 125, 126, 127, - }, - .oobfree = { - {.offset = 2, .length = 4}, - {.offset = 16, .length = 7}, - {.offset = 32, .length = 7}, - {.offset = 48, .length = 7}, - {.offset = 64, .length = 7}, - {.offset = 80, .length = 7}, - {.offset = 96, .length = 7}, - {.offset = 112, .length = 7}, - } -}; - static const char * const part_probes[] = { "cmdlinepart", "RedBoot", "ofpart", NULL }; @@ -943,6 +876,93 @@ static void mxc_do_addr_cycle(struct mtd_info *mtd, int column, int page_addr) } } +static int mxc_v1_eccpos(struct mtd_info *mtd, int eccbyte) +{ + struct nand_chip *nand_chip = mtd->priv; + int eccbytes = nand_chip->ecc.steps * nand_chip->ecc.bytes; + + if (eccbyte >= eccbytes) + return -ERANGE; + + return ((eccbyte / nand_chip->ecc.bytes) * 16) + 6 + + (eccbyte % nand_chip->ecc.bytes); +} + +static int mxc_v1_oobfree(struct mtd_info *mtd, int section, + struct nand_oobfree *oobfree) +{ + struct nand_chip *nand_chip = mtd->priv; + + if (section > nand_chip->ecc.steps) + return -ERANGE; + + if (!section) { + if (mtd->writesize <= 512) { + oobfree->offset = 0; + oobfree->length = 5; + } else { + oobfree->offset = 2; + oobfree->length = 4; + } + } else { + oobfree->offset = ((section - 1) * 16) + + nand_chip->ecc.bytes + 6; + if (section < nand_chip->ecc.steps) + oobfree->length = (section * 16) + 6 - oobfree->offset; + else + oobfree->length = mtd->oobsize - oobfree->offset; + } + + return 0; +} + +static const struct mtd_ooblayout_ops mxc_v1_ooblayout_ops = { + .eccpos = mxc_v1_eccpos, + .oobfree = mxc_v1_oobfree, +}; + +static int mxc_v2_eccpos(struct mtd_info *mtd, int eccbyte) +{ + struct nand_chip *nand_chip = mtd->priv; + int eccbytes = nand_chip->ecc.steps * nand_chip->ecc.bytes; + int stepsize = nand_chip->ecc.bytes == 9 ? 16 : 26; + + if (eccbyte >= eccbytes) + return -ERANGE; + + return ((eccbyte / nand_chip->ecc.bytes) * stepsize) + 7; +} + +static int mxc_v2_oobfree(struct mtd_info *mtd, int section, + struct nand_oobfree *oobfree) +{ + struct nand_chip *nand_chip = mtd->priv; + int stepsize = nand_chip->ecc.bytes == 9 ? 16 : 26; + + if (section > nand_chip->ecc.steps) + return -ERANGE; + + if (!section) { + if (mtd->writesize <= 512) { + oobfree->offset = 0; + oobfree->length = 5; + } else { + oobfree->offset = 2; + oobfree->length = 4; + } + } else { + oobfree->offset = section * stepsize; + oobfree->length = 7; + } + + return 0; +} + +static const struct mtd_ooblayout_ops mxc_v2_ooblayout_ops = { + .eccpos = mxc_v2_eccpos, + .oobfree = mxc_v2_oobfree, +}; + /* * v2 and v3 type controllers can do 4bit or 8bit ecc depending * on how much oob the nand chip has. For 8bit ecc we need at least @@ -960,23 +980,6 @@ static int get_eccsize(struct mtd_info *mtd) return 8; } -static void ecc_8bit_layout_4k(struct nand_ecclayout *layout) -{ - int i, j; - - layout->eccbytes = 8*18; - for (i = 0; i < 8; i++) - for (j = 0; j < 18; j++) - layout->eccpos[i*18 + j] = i*26 + j + 7; - - layout->oobfree[0].offset = 2; - layout->oobfree[0].length = 4; - for (i = 1; i < 8; i++) { - layout->oobfree[i].offset = i*26; - layout->oobfree[i].length = 7; - } -} - static void preset_v1(struct mtd_info *mtd) { struct nand_chip *nand_chip = mtd->priv; @@ -1270,9 +1273,7 @@ static const struct mxc_nand_devtype_data imx21_nand_devtype_data = { .check_int = check_int_v1_v2, .irq_control = irq_control_v1_v2, .get_ecc_status = get_ecc_status_v1, - .ecclayout_512 = &nandv1_hw_eccoob_smallpage, - .ecclayout_2k = &nandv1_hw_eccoob_largepage, - .ecclayout_4k = &nandv1_hw_eccoob_smallpage, /* XXX: needs fix */ + .ooblayout = &mxc_v1_ooblayout_ops, .select_chip = mxc_nand_select_chip_v1_v3, .correct_data = mxc_nand_correct_data_v1, .irqpending_quirk = 1, @@ -1295,9 +1296,7 @@ static const struct mxc_nand_devtype_data imx27_nand_devtype_data = { .check_int = check_int_v1_v2, .irq_control = irq_control_v1_v2, .get_ecc_status = get_ecc_status_v1, - .ecclayout_512 = &nandv1_hw_eccoob_smallpage, - .ecclayout_2k = &nandv1_hw_eccoob_largepage, - .ecclayout_4k = &nandv1_hw_eccoob_smallpage, /* XXX: needs fix */ + .ooblayout = &mxc_v1_ooblayout_ops, .select_chip = mxc_nand_select_chip_v1_v3, .correct_data = mxc_nand_correct_data_v1, .irqpending_quirk = 0, @@ -1321,9 +1320,7 @@ static const struct mxc_nand_devtype_data imx25_nand_devtype_data = { .check_int = check_int_v1_v2, .irq_control = irq_control_v1_v2, .get_ecc_status = get_ecc_status_v2, - .ecclayout_512 = &nandv2_hw_eccoob_smallpage, - .ecclayout_2k = &nandv2_hw_eccoob_largepage, - .ecclayout_4k = &nandv2_hw_eccoob_4k, + .ooblayout = &mxc_v2_ooblayout_ops, .select_chip = mxc_nand_select_chip_v2, .correct_data = mxc_nand_correct_data_v2_v3, .irqpending_quirk = 0, @@ -1347,9 +1344,7 @@ static const struct mxc_nand_devtype_data imx51_nand_devtype_data = { .check_int = check_int_v3, .irq_control = irq_control_v3, .get_ecc_status = get_ecc_status_v3, - .ecclayout_512 = &nandv2_hw_eccoob_smallpage, - .ecclayout_2k = &nandv2_hw_eccoob_largepage, - .ecclayout_4k = &nandv2_hw_eccoob_smallpage, /* XXX: needs fix */ + .ooblayout = &mxc_v2_ooblayout_ops, .select_chip = mxc_nand_select_chip_v1_v3, .correct_data = mxc_nand_correct_data_v2_v3, .irqpending_quirk = 0, @@ -1374,9 +1369,7 @@ static const struct mxc_nand_devtype_data imx53_nand_devtype_data = { .check_int = check_int_v3, .irq_control = irq_control_v3, .get_ecc_status = get_ecc_status_v3, - .ecclayout_512 = &nandv2_hw_eccoob_smallpage, - .ecclayout_2k = &nandv2_hw_eccoob_largepage, - .ecclayout_4k = &nandv2_hw_eccoob_smallpage, /* XXX: needs fix */ + .ooblayout = &mxc_v2_ooblayout_ops, .select_chip = mxc_nand_select_chip_v1_v3, .correct_data = mxc_nand_correct_data_v2_v3, .irqpending_quirk = 0, @@ -1578,7 +1571,7 @@ static int mxcnd_probe(struct platform_device *pdev) this->select_chip = host->devtype_data->select_chip; this->ecc.size = 512; - this->ecc.layout = host->devtype_data->ecclayout_512; + mtd_set_ooblayout(mtd, host->devtype_data->ooblayout); if (host->pdata.hw_ecc) { this->ecc.calculate = mxc_nand_calculate_ecc; @@ -1651,12 +1644,11 @@ static int mxcnd_probe(struct platform_device *pdev) /* Call preset again, with correct writesize this time */ host->devtype_data->preset(mtd); - if (mtd->writesize == 2048) - this->ecc.layout = host->devtype_data->ecclayout_2k; - else if (mtd->writesize == 4096) { - this->ecc.layout = host->devtype_data->ecclayout_4k; - if (get_eccsize(mtd) == 8) - ecc_8bit_layout_4k(this->ecc.layout); + if (!this->ecc.bytes) { + if (host->eccsize == 8) + this->ecc.bytes = 18; + else if (host->eccsize == 4) + this->ecc.bytes = 9; } /* diff --git a/drivers/mtd/nand/omap2.c b/drivers/mtd/nand/omap2.c index 6a598b1..3570e31 100644 --- a/drivers/mtd/nand/omap2.c +++ b/drivers/mtd/nand/omap2.c @@ -170,8 +170,6 @@ struct omap_nand_info { u_char *buf; int buf_len; struct gpmc_nand_regs reg; - /* generated at runtime depending on ECC algorithm and layout selected */ - struct nand_ecclayout oobinfo; /* fields specific for BCHx_HW ECC scheme */ struct device *elm_dev; struct device_node *of_node; @@ -1649,19 +1647,98 @@ static bool omap2_nand_ecc_check(struct omap_nand_info *info, return true; } +static int omap_eccpos(struct mtd_info *mtd, int eccbyte) +{ + struct nand_chip *chip = mtd_to_nand(mtd); + int off = chip->options & NAND_BUSWIDTH_16 ? + BADBLOCK_MARKER_LENGTH : 1; + + if (eccbyte >= chip->ecc.bytes * chip->ecc.steps) + return -ERANGE; + + return eccbyte + off; +} + +static int omap_oobfree(struct mtd_info *mtd, int section, + struct nand_oobfree *oobfree) +{ + struct nand_chip *chip = mtd_to_nand(mtd); + int off = chip->options & NAND_BUSWIDTH_16 ? + BADBLOCK_MARKER_LENGTH : 1; + if (section) + return -ERANGE; + + off += chip->ecc.bytes * chip->ecc.steps; + if (off >= mtd->oobsize) + return -ERANGE; + + oobfree->offset = off; + oobfree->length = mtd->oobsize - off; + + return 0; +} + +const struct mtd_ooblayout_ops omap_ooblayout_ops = { + .eccpos = omap_eccpos, + .oobfree = omap_oobfree, +}; + +static int omap_sw_eccpos(struct mtd_info *mtd, int eccbyte) +{ + struct nand_chip *chip = mtd_to_nand(mtd); + int off = chip->options & NAND_BUSWIDTH_16 ? + BADBLOCK_MARKER_LENGTH : 1; + + if (eccbyte >= chip->ecc.bytes * chip->ecc.steps) + return -ERANGE; + + /* + * When SW correction is employed, one OMAP specific marker byte is + * reserved after each ECC step. + */ + return (eccbyte % chip->ecc.bytes) + (eccbyte / chip->ecc.bytes) + off; +} + +static int omap_sw_oobfree(struct mtd_info *mtd, int section, + struct nand_oobfree *oobfree) +{ + struct nand_chip *chip = mtd_to_nand(mtd); + int off = chip->options & NAND_BUSWIDTH_16 ? + BADBLOCK_MARKER_LENGTH : 1; + if (section) + return -ERANGE; + + /* + * When SW correction is employed, one OMAP specific marker byte is + * reserved after each ECC step. + */ + off += ((chip->ecc.bytes + 1) * chip->ecc.steps); + if (off >= mtd->oobsize) + return -ERANGE; + + oobfree->offset = off; + oobfree->length = mtd->oobsize - off; + + return 0; +} + +const struct mtd_ooblayout_ops omap_sw_ooblayout_ops = { + .eccpos = omap_sw_eccpos, + .oobfree = omap_sw_oobfree, +}; + static int omap_nand_probe(struct platform_device *pdev) { struct omap_nand_info *info; struct omap_nand_platform_data *pdata; struct mtd_info *mtd; struct nand_chip *nand_chip; - struct nand_ecclayout *ecclayout; int err; - int i; dma_cap_mask_t mask; unsigned sig; - unsigned oob_index; struct resource *res; + int min_oobbytes; + int oobbytes_per_step; pdata = dev_get_platdata(&pdev->dev); if (pdata == NULL) { @@ -1821,7 +1898,7 @@ static int omap_nand_probe(struct platform_device *pdev) /* * Bail out earlier to let NAND_ECC_SOFT code create its own - * ecclayout instead of using ours. + * ooblayout instead of using ours. */ if (info->ecc_opt == OMAP_ECC_HAM1_CODE_SW) { nand_chip->ecc.mode = NAND_ECC_SOFT; @@ -1829,8 +1906,6 @@ static int omap_nand_probe(struct platform_device *pdev) } /* populate MTD interface based on ECC scheme */ - ecclayout = &info->oobinfo; - nand_chip->ecc.layout = ecclayout; switch (info->ecc_opt) { case OMAP_ECC_HAM1_CODE_HW: pr_info("nand: using OMAP_ECC_HAM1_CODE_HW\n"); @@ -1841,19 +1916,8 @@ static int omap_nand_probe(struct platform_device *pdev) nand_chip->ecc.calculate = omap_calculate_ecc; nand_chip->ecc.hwctl = omap_enable_hwecc; nand_chip->ecc.correct = omap_correct_data; - /* define ECC layout */ - ecclayout->eccbytes = nand_chip->ecc.bytes * - (mtd->writesize / - nand_chip->ecc.size); - if (nand_chip->options & NAND_BUSWIDTH_16) - oob_index = BADBLOCK_MARKER_LENGTH; - else - oob_index = 1; - for (i = 0; i < ecclayout->eccbytes; i++, oob_index++) - ecclayout->eccpos[i] = oob_index; - /* no reserved-marker in ecclayout for this ecc-scheme */ - ecclayout->oobfree->offset = - ecclayout->eccpos[ecclayout->eccbytes - 1] + 1; + mtd_set_ooblayout(mtd, &omap_ooblayout_ops); + oobbytes_per_step = nand_chip->ecc.bytes; break; case OMAP_ECC_BCH4_CODE_HW_DETECTION_SW: @@ -1865,19 +1929,9 @@ static int omap_nand_probe(struct platform_device *pdev) nand_chip->ecc.hwctl = omap_enable_hwecc_bch; nand_chip->ecc.correct = nand_bch_correct_data; nand_chip->ecc.calculate = omap_calculate_ecc_bch; - /* define ECC layout */ - ecclayout->eccbytes = nand_chip->ecc.bytes * - (mtd->writesize / - nand_chip->ecc.size); - oob_index = BADBLOCK_MARKER_LENGTH; - for (i = 0; i < ecclayout->eccbytes; i++, oob_index++) { - ecclayout->eccpos[i] = oob_index; - if (((i + 1) % nand_chip->ecc.bytes) == 0) - oob_index++; - } - /* include reserved-marker in ecclayout->oobfree calculation */ - ecclayout->oobfree->offset = 1 + - ecclayout->eccpos[ecclayout->eccbytes - 1] + 1; + mtd_set_ooblayout(mtd, &omap_sw_ooblayout_ops); + /* Reserve one byte for the OMAP marker */ + oobbytes_per_step = nand_chip->ecc.bytes + 1; /* software bch library is used for locating errors */ nand_chip->ecc.priv = nand_bch_init(mtd); if (!nand_chip->ecc.priv) { @@ -1899,16 +1953,8 @@ static int omap_nand_probe(struct platform_device *pdev) nand_chip->ecc.calculate = omap_calculate_ecc_bch; nand_chip->ecc.read_page = omap_read_page_bch; nand_chip->ecc.write_page = omap_write_page_bch; - /* define ECC layout */ - ecclayout->eccbytes = nand_chip->ecc.bytes * - (mtd->writesize / - nand_chip->ecc.size); - oob_index = BADBLOCK_MARKER_LENGTH; - for (i = 0; i < ecclayout->eccbytes; i++, oob_index++) - ecclayout->eccpos[i] = oob_index; - /* reserved marker already included in ecclayout->eccbytes */ - ecclayout->oobfree->offset = - ecclayout->eccpos[ecclayout->eccbytes - 1] + 1; + mtd_set_ooblayout(mtd, &omap_ooblayout_ops); + oobbytes_per_step = nand_chip->ecc.bytes; err = elm_config(info->elm_dev, BCH4_ECC, info->mtd.writesize / nand_chip->ecc.size, @@ -1926,19 +1972,9 @@ static int omap_nand_probe(struct platform_device *pdev) nand_chip->ecc.hwctl = omap_enable_hwecc_bch; nand_chip->ecc.correct = nand_bch_correct_data; nand_chip->ecc.calculate = omap_calculate_ecc_bch; - /* define ECC layout */ - ecclayout->eccbytes = nand_chip->ecc.bytes * - (mtd->writesize / - nand_chip->ecc.size); - oob_index = BADBLOCK_MARKER_LENGTH; - for (i = 0; i < ecclayout->eccbytes; i++, oob_index++) { - ecclayout->eccpos[i] = oob_index; - if (((i + 1) % nand_chip->ecc.bytes) == 0) - oob_index++; - } - /* include reserved-marker in ecclayout->oobfree calculation */ - ecclayout->oobfree->offset = 1 + - ecclayout->eccpos[ecclayout->eccbytes - 1] + 1; + mtd_set_ooblayout(mtd, &omap_sw_ooblayout_ops); + /* Reserve one byte for the OMAP marker */ + oobbytes_per_step = nand_chip->ecc.bytes + 1; /* software bch library is used for locating errors */ nand_chip->ecc.priv = nand_bch_init(mtd); if (!nand_chip->ecc.priv) { @@ -1960,6 +1996,8 @@ static int omap_nand_probe(struct platform_device *pdev) nand_chip->ecc.calculate = omap_calculate_ecc_bch; nand_chip->ecc.read_page = omap_read_page_bch; nand_chip->ecc.write_page = omap_write_page_bch; + mtd_set_ooblayout(mtd, &omap_ooblayout_ops); + oobbytes_per_step = nand_chip->ecc.bytes; err = elm_config(info->elm_dev, BCH8_ECC, info->mtd.writesize / nand_chip->ecc.size, @@ -1967,16 +2005,6 @@ static int omap_nand_probe(struct platform_device *pdev) if (err < 0) goto return_error; - /* define ECC layout */ - ecclayout->eccbytes = nand_chip->ecc.bytes * - (mtd->writesize / - nand_chip->ecc.size); - oob_index = BADBLOCK_MARKER_LENGTH; - for (i = 0; i < ecclayout->eccbytes; i++, oob_index++) - ecclayout->eccpos[i] = oob_index; - /* reserved marker already included in ecclayout->eccbytes */ - ecclayout->oobfree->offset = - ecclayout->eccpos[ecclayout->eccbytes - 1] + 1; break; case OMAP_ECC_BCH16_CODE_HW: @@ -1990,6 +2018,8 @@ static int omap_nand_probe(struct platform_device *pdev) nand_chip->ecc.calculate = omap_calculate_ecc_bch; nand_chip->ecc.read_page = omap_read_page_bch; nand_chip->ecc.write_page = omap_write_page_bch; + mtd_set_ooblayout(mtd, &omap_ooblayout_ops); + oobbytes_per_step = nand_chip->ecc.bytes; err = elm_config(info->elm_dev, BCH16_ECC, info->mtd.writesize / nand_chip->ecc.size, @@ -1997,16 +2027,6 @@ static int omap_nand_probe(struct platform_device *pdev) if (err < 0) goto return_error; - /* define ECC layout */ - ecclayout->eccbytes = nand_chip->ecc.bytes * - (mtd->writesize / - nand_chip->ecc.size); - oob_index = BADBLOCK_MARKER_LENGTH; - for (i = 0; i < ecclayout->eccbytes; i++, oob_index++) - ecclayout->eccpos[i] = oob_index; - /* reserved marker already included in ecclayout->eccbytes */ - ecclayout->oobfree->offset = - ecclayout->eccpos[ecclayout->eccbytes - 1] + 1; break; default: dev_err(&info->pdev->dev, "invalid or unsupported ECC scheme\n"); @@ -2014,13 +2034,15 @@ static int omap_nand_probe(struct platform_device *pdev) goto return_error; } - /* all OOB bytes from oobfree->offset till end off OOB are free */ - ecclayout->oobfree->length = mtd->oobsize - ecclayout->oobfree->offset; /* check if NAND device's OOB is enough to store ECC signatures */ - if (mtd->oobsize < (ecclayout->eccbytes + BADBLOCK_MARKER_LENGTH)) { + min_oobbytes = (oobbytes_per_step * + (mtd->writesize / nand_chip->ecc.size)) + + (nand_chip->options & NAND_BUSWIDTH_16 ? + BADBLOCK_MARKER_LENGTH : 1); + if (mtd->oobsize < min_oobbytes) { dev_err(&info->pdev->dev, "not enough OOB bytes required = %d, available=%d\n", - ecclayout->eccbytes, mtd->oobsize); + min_oobbytes, mtd->oobsize); err = -EINVAL; goto return_error; } diff --git a/drivers/mtd/nand/pxa3xx_nand.c b/drivers/mtd/nand/pxa3xx_nand.c index bdbc2c2..d0f163f 100644 --- a/drivers/mtd/nand/pxa3xx_nand.c +++ b/drivers/mtd/nand/pxa3xx_nand.c @@ -285,6 +285,59 @@ static struct pxa3xx_nand_flash builtin_flash_types[] = { { 0xba20, 16, 16, &timing[3] }, }; +static int pxa3xx_eccpos(struct mtd_info *mtd, int eccbyte) +{ + struct nand_chip *chip = mtd_to_nand(mtd); + struct pxa3xx_nand_host *host = chip->priv; + struct pxa3xx_nand_info *info = host->info_data; + int chunk = eccbyte / info->ecc_size; + int nchunks = mtd->writesize / info->chunk_size; + + if (chunk >= nchunks) + return -ERANGE; + + return (eccbyte % info->ecc_size) + info->spare_size + + ((info->ecc_size + info->spare_size) * chunk); +} + +static int pxa3xx_oobfree(struct mtd_info *mtd, int section, + struct nand_oobfree *oobfree) +{ + struct nand_chip *chip = mtd_to_nand(mtd); + struct pxa3xx_nand_host *host = chip->priv; + struct pxa3xx_nand_info *info = host->info_data; + int nchunks = mtd->writesize / info->chunk_size; + + if (section >= nchunks) + return -ERANGE; + + if (!info->spare_size) + return 0; + + oobfree->offset = section * (info->ecc_size + info->spare_size); + oobfree->length = info->spare_size; + if (!section) { + /* + * Bootrom looks in bytes 0 & 5 for bad blocks for the + * 4KB page / 4bit BCH combination. + */ + if (mtd->writesize == 4096 && info->chunk_size == 2048) { + oobfree->offset += 6; + oobfree->length -= 6; + } else { + oobfree->offset += 2; + oobfree->length -= 2; + } + } + + return 0; +} + +const struct mtd_ooblayout_ops pxa3xx_ooblayout_ops = { + .eccpos = pxa3xx_eccpos, + .oobfree = pxa3xx_oobfree, +}; + static u8 bbt_pattern[] = {'M', 'V', 'B', 'b', 't', '0' }; static u8 bbt_mirror_pattern[] = {'1', 't', 'b', 'B', 'V', 'M' }; @@ -308,41 +361,6 @@ static struct nand_bbt_descr bbt_mirror_descr = { .pattern = bbt_mirror_pattern }; -static struct nand_ecclayout ecc_layout_2KB_bch4bit = { - .eccbytes = 32, - .eccpos = { - 32, 33, 34, 35, 36, 37, 38, 39, - 40, 41, 42, 43, 44, 45, 46, 47, - 48, 49, 50, 51, 52, 53, 54, 55, - 56, 57, 58, 59, 60, 61, 62, 63}, - .oobfree = { {2, 30} } -}; - -static struct nand_ecclayout ecc_layout_4KB_bch4bit = { - .eccbytes = 64, - .eccpos = { - 32, 33, 34, 35, 36, 37, 38, 39, - 40, 41, 42, 43, 44, 45, 46, 47, - 48, 49, 50, 51, 52, 53, 54, 55, - 56, 57, 58, 59, 60, 61, 62, 63, - 96, 97, 98, 99, 100, 101, 102, 103, - 104, 105, 106, 107, 108, 109, 110, 111, - 112, 113, 114, 115, 116, 117, 118, 119, - 120, 121, 122, 123, 124, 125, 126, 127}, - /* Bootrom looks in bytes 0 & 5 for bad blocks */ - .oobfree = { {6, 26}, { 64, 32} } -}; - -static struct nand_ecclayout ecc_layout_4KB_bch8bit = { - .eccbytes = 128, - .eccpos = { - 32, 33, 34, 35, 36, 37, 38, 39, - 40, 41, 42, 43, 44, 45, 46, 47, - 48, 49, 50, 51, 52, 53, 54, 55, - 56, 57, 58, 59, 60, 61, 62, 63}, - .oobfree = { } -}; - #define NDTR0_tCH(c) (min((c), 7) << 19) #define NDTR0_tCS(c) (min((c), 7) << 16) #define NDTR0_tWH(c) (min((c), 7) << 11) @@ -1502,9 +1520,12 @@ static void pxa3xx_nand_free_buff(struct pxa3xx_nand_info *info) } static int pxa_ecc_init(struct pxa3xx_nand_info *info, - struct nand_ecc_ctrl *ecc, + struct mtd_info *mtd, int strength, int ecc_stepsize, int page_size) { + struct nand_chip *chip = mtd_to_nand(mtd); + struct nand_ecc_ctrl *ecc = &chip->ecc; + if (strength == 1 && ecc_stepsize == 512 && page_size == 2048) { info->chunk_size = 2048; info->spare_size = 40; @@ -1532,7 +1553,7 @@ static int pxa_ecc_init(struct pxa3xx_nand_info *info, info->ecc_size = 32; ecc->mode = NAND_ECC_HW; ecc->size = info->chunk_size; - ecc->layout = &ecc_layout_2KB_bch4bit; + mtd_set_ooblayout(mtd, &pxa3xx_ooblayout_ops); ecc->strength = 16; } else if (strength == 4 && ecc_stepsize == 512 && page_size == 4096) { @@ -1542,7 +1563,7 @@ static int pxa_ecc_init(struct pxa3xx_nand_info *info, info->ecc_size = 32; ecc->mode = NAND_ECC_HW; ecc->size = info->chunk_size; - ecc->layout = &ecc_layout_4KB_bch4bit; + mtd_set_ooblayout(mtd, &pxa3xx_ooblayout_ops); ecc->strength = 16; /* @@ -1556,7 +1577,7 @@ static int pxa_ecc_init(struct pxa3xx_nand_info *info, info->ecc_size = 32; ecc->mode = NAND_ECC_HW; ecc->size = info->chunk_size; - ecc->layout = &ecc_layout_4KB_bch8bit; + mtd_set_ooblayout(mtd, &pxa3xx_ooblayout_ops); ecc->strength = 16; } else { dev_err(&info->pdev->dev, @@ -1647,7 +1668,7 @@ static int pxa3xx_nand_scan(struct mtd_info *mtd) ecc_step = 512; } - ret = pxa_ecc_init(info, &chip->ecc, ecc_strength, + ret = pxa_ecc_init(info, mtd, ecc_strength, ecc_step, mtd->writesize); if (ret) return ret; diff --git a/drivers/mtd/nand/s3c2410.c b/drivers/mtd/nand/s3c2410.c index b569200..83c3920 100644 --- a/drivers/mtd/nand/s3c2410.c +++ b/drivers/mtd/nand/s3c2410.c @@ -84,11 +84,29 @@ /* new oob placement block for use with hardware ecc generation */ +static int s3c2410_eccpos(struct mtd_info *mtd, int eccbyte) +{ + if (eccbyte > 2) + return -ERANGE; + + return eccbyte; +} + +static int s3c2410_oobfree(struct mtd_info *mtd, int section, + struct nand_oobfree *oobfree) +{ + if (section) + return -ERANGE; + + oobfree->offset = 8; + oobfree->length = 8; + + return 0; +} -static struct nand_ecclayout nand_hw_eccoob = { - .eccbytes = 3, - .eccpos = {0, 1, 2}, - .oobfree = {{8, 8}} +const struct mtd_ooblayout_ops s3c2410_ooblayout_ops = { + .eccpos = s3c2410_eccpos, + .oobfree = s3c2410_oobfree, }; /* controller and mtd information */ @@ -918,7 +936,7 @@ static void s3c2410_nand_update_chip(struct s3c2410_nand_info *info, } else { chip->ecc.size = 512; chip->ecc.bytes = 3; - chip->ecc.layout = &nand_hw_eccoob; + mtd_set_ooblayout(&nmtd->mtd, &s3c2410_ooblayout_ops); } } diff --git a/drivers/mtd/nand/sh_flctl.c b/drivers/mtd/nand/sh_flctl.c index 57dc525..0430375 100644 --- a/drivers/mtd/nand/sh_flctl.c +++ b/drivers/mtd/nand/sh_flctl.c @@ -43,26 +43,66 @@ #include <linux/mtd/partitions.h> #include <linux/mtd/sh_flctl.h> -static struct nand_ecclayout flctl_4secc_oob_16 = { - .eccbytes = 10, - .eccpos = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9}, - .oobfree = { - {.offset = 12, - . length = 4} }, +static int flctl_4secc_oob_smallpage_eccpos(struct mtd_info *mtd, int eccbyte) +{ + struct nand_chip *chip = mtd_to_nand(mtd); + + if (eccbyte >= chip->ecc.bytes) + return -ERANGE; + + return eccbyte; +} + +static int flctl_4secc_oob_smallpage_oobfree(struct mtd_info *mtd, int section, + struct nand_oobfree *oobfree) +{ + if (section) + return -ERANGE; + + oobfree->offset = 12; + oobfree->length = 4; + + return 0; +} + +const struct mtd_ooblayout_ops flctl_4secc_oob_smallpage_ops = { + .eccpos = flctl_4secc_oob_smallpage_eccpos, + .oobfree = flctl_4secc_oob_smallpage_oobfree, }; -static struct nand_ecclayout flctl_4secc_oob_64 = { - .eccbytes = 4 * 10, - .eccpos = { - 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, - 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, - 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, - 54, 55, 56, 57, 58, 59, 60, 61, 62, 63 }, - .oobfree = { - {.offset = 2, .length = 4}, - {.offset = 16, .length = 6}, - {.offset = 32, .length = 6}, - {.offset = 48, .length = 6} }, +static int flctl_4secc_oob_largepage_eccpos(struct mtd_info *mtd, int eccbyte) +{ + struct nand_chip *chip = mtd_to_nand(mtd); + + if (eccbyte >= chip->ecc.bytes * chip->ecc.steps) + return -ERANGE; + + return ((eccbyte / chip->ecc.bytes) * 16) + 6 + + (eccbyte % chip->ecc.bytes); +} + +static int flctl_4secc_oob_largepage_oobfree(struct mtd_info *mtd, int section, + struct nand_oobfree *oobfree) +{ + struct nand_chip *chip = mtd_to_nand(mtd); + + if (section >= chip->ecc.steps) + return -ERANGE; + + oobfree->offset = section * 16; + oobfree->length = 6; + + if (!section) { + oobfree->offset += 2; + oobfree->length -= 2; + } + + return 0; +} + +const struct mtd_ooblayout_ops flctl_4secc_oob_largepage_ops = { + .eccpos = flctl_4secc_oob_largepage_eccpos, + .oobfree = flctl_4secc_oob_largepage_oobfree, }; static uint8_t scan_ff_pattern[] = { 0xff, 0xff }; @@ -987,10 +1027,10 @@ static int flctl_chip_init_tail(struct mtd_info *mtd) if (flctl->hwecc) { if (mtd->writesize == 512) { - chip->ecc.layout = &flctl_4secc_oob_16; + mtd_set_ooblayout(mtd, &flctl_4secc_oob_smallpage_ops); chip->badblock_pattern = &flctl_4secc_smallpage; } else { - chip->ecc.layout = &flctl_4secc_oob_64; + mtd_set_ooblayout(mtd, &flctl_4secc_oob_largepage_ops); chip->badblock_pattern = &flctl_4secc_largepage; } diff --git a/drivers/mtd/nand/sharpsl.c b/drivers/mtd/nand/sharpsl.c index 082b600..e49eb95 100644 --- a/drivers/mtd/nand/sharpsl.c +++ b/drivers/mtd/nand/sharpsl.c @@ -145,6 +145,7 @@ static int sharpsl_nand_probe(struct platform_device *pdev) /* Link the private data with the MTD structure */ sharpsl->mtd.priv = this; sharpsl->mtd.dev.parent = &pdev->dev; + mtd_set_ooblayout(&sharpsl->mtd, data->ecc_layout); platform_set_drvdata(pdev, sharpsl); @@ -167,7 +168,6 @@ static int sharpsl_nand_probe(struct platform_device *pdev) this->ecc.bytes = 3; this->ecc.strength = 1; this->badblock_pattern = data->badblock_pattern; - this->ecc.layout = data->ecc_layout; this->ecc.hwctl = sharpsl_nand_enable_hwecc; this->ecc.calculate = sharpsl_nand_calculate_ecc; this->ecc.correct = nand_correct_data; diff --git a/drivers/mtd/nand/sm_common.c b/drivers/mtd/nand/sm_common.c index e06b5e5..398d534 100644 --- a/drivers/mtd/nand/sm_common.c +++ b/drivers/mtd/nand/sm_common.c @@ -12,14 +12,46 @@ #include <linux/sizes.h> #include "sm_common.h" -static struct nand_ecclayout nand_oob_sm = { - .eccbytes = 6, - .eccpos = {8, 9, 10, 13, 14, 15}, - .oobfree = { - {.offset = 0 , .length = 4}, /* reserved */ - {.offset = 6 , .length = 2}, /* LBA1 */ - {.offset = 11, .length = 2} /* LBA2 */ +static int oob_sm_eccpos(struct mtd_info *mtd, int eccbyte) +{ + if (eccbyte > 5) + return -ERANGE; + + if (eccbyte < 3) + return eccbyte + 8; + + return eccbyte + 13; +} + +static int oob_sm_oobfree(struct mtd_info *mtd, int section, + struct nand_oobfree *oobfree) +{ + switch (section) { + case 0: + /* reserved */ + oobfree->offset = 0; + oobfree->length = 4; + break; + case 1: + /* LBA1 */ + oobfree->offset = 6; + oobfree->length = 2; + break; + case 2: + /* LBA2 */ + oobfree->offset = 11; + oobfree->length = 2; + break; + default: + return -ERANGE; } + + return 0; +} + +const struct mtd_ooblayout_ops oob_sm_ops = { + .eccpos = oob_sm_eccpos, + .oobfree = oob_sm_oobfree, }; /* NOTE: This layout is is not compatabable with SmartMedia, */ @@ -28,15 +60,39 @@ static struct nand_ecclayout nand_oob_sm = { /* If you use smftl, it will bypass this and work correctly */ /* If you not, then you break SmartMedia compliance anyway */ -static struct nand_ecclayout nand_oob_sm_small = { - .eccbytes = 3, - .eccpos = {0, 1, 2}, - .oobfree = { - {.offset = 3 , .length = 2}, /* reserved */ - {.offset = 6 , .length = 2}, /* LBA1 */ +static int oob_sm_small_eccpos(struct mtd_info *mtd, int eccbyte) +{ + if (eccbyte > 2) + return -ERANGE; + + return eccbyte; +} + +static int oob_sm_small_oobfree(struct mtd_info *mtd, int section, + struct nand_oobfree *oobfree) +{ + switch (section) { + case 0: + /* reserved */ + oobfree->offset = 3; + oobfree->length = 2; + break; + case 1: + /* LBA1 */ + oobfree->offset = 6; + oobfree->length = 2; + break; + default: + return -ERANGE; } -}; + return 0; +} + +const struct mtd_ooblayout_ops oob_sm_small_ops = { + .eccpos = oob_sm_small_eccpos, + .oobfree = oob_sm_small_oobfree, +}; static int sm_block_markbad(struct mtd_info *mtd, loff_t ofs) { @@ -121,9 +177,9 @@ int sm_register_device(struct mtd_info *mtd, int smartmedia) /* ECC layout */ if (mtd->writesize == SM_SECTOR_SIZE) - chip->ecc.layout = &nand_oob_sm; + mtd_set_ooblayout(mtd, &oob_sm_ops); else if (mtd->writesize == SM_SMALL_PAGE) - chip->ecc.layout = &nand_oob_sm_small; + mtd_set_ooblayout(mtd, &oob_sm_small_ops); else return -ENODEV; diff --git a/drivers/mtd/nand/sunxi_nand.c b/drivers/mtd/nand/sunxi_nand.c index 1bbcc0c..0443410 100644 --- a/drivers/mtd/nand/sunxi_nand.c +++ b/drivers/mtd/nand/sunxi_nand.c @@ -211,12 +211,9 @@ struct sunxi_nand_chip_sel { * sunxi HW ECC infos: stores information related to HW ECC support * * @mode: the sunxi ECC mode field deduced from ECC requirements - * @layout: the OOB layout depending on the ECC requirements and the - * selected ECC mode */ struct sunxi_nand_hw_ecc { int mode; - struct nand_ecclayout layout; }; /* @@ -1026,6 +1023,55 @@ static int sunxi_nand_chip_init_timings(struct sunxi_nand_chip *chip, return sunxi_nand_chip_set_timings(chip, timings); } +static int sunxi_nand_eccpos(struct mtd_info *mtd, int eccbyte) +{ + struct nand_chip *nand = mtd->priv; + struct nand_ecc_ctrl *ecc = &nand->ecc; + int eccbytes = ecc->bytes * ecc->steps; + + if (eccbyte >= eccbytes) + return -ERANGE; + + return ((eccbyte / ecc->bytes) * (ecc->bytes + 4)) + + (eccbyte % ecc->bytes); +} + +static int sunxi_nand_oobfree(struct mtd_info *mtd, int section, + struct nand_oobfree *oobfree) +{ + struct nand_chip *nand = mtd->priv; + struct nand_ecc_ctrl *ecc = &nand->ecc; + + if (section > ecc->steps) + return -ERANGE; + + /* + * The first 2 bytes are used for BB markers, hence we + * only have 2 bytes available in the first user data + * section. + */ + if (!section && ecc->mode == NAND_ECC_HW) { + oobfree->offset = 2; + oobfree->length = 2; + + return 0; + } + + oobfree->offset = section * (ecc->bytes + 4); + + if (section < ecc->steps) + oobfree->length = 4; + else + oobfree->offset = mtd->oobsize - oobfree->offset; + + return 0; +} + +const struct mtd_ooblayout_ops sunxi_nand_ooblayout_ops = { + .eccpos = sunxi_nand_eccpos, + .oobfree = sunxi_nand_oobfree, +}; + static int sunxi_nand_hw_common_ecc_ctrl_init(struct mtd_info *mtd, struct nand_ecc_ctrl *ecc, struct device_node *np) @@ -1035,7 +1081,6 @@ static int sunxi_nand_hw_common_ecc_ctrl_init(struct mtd_info *mtd, struct sunxi_nand_chip *sunxi_nand = to_sunxi_nand(nand); struct sunxi_nfc *nfc = to_sunxi_nfc(sunxi_nand->nand.controller); struct sunxi_nand_hw_ecc *data; - struct nand_ecclayout *layout; int nsectors; int ret; int i; @@ -1064,7 +1109,6 @@ static int sunxi_nand_hw_common_ecc_ctrl_init(struct mtd_info *mtd, /* HW ECC always work with even numbers of ECC bytes */ ecc->bytes = ALIGN(ecc->bytes, 2); - layout = &data->layout; nsectors = mtd->writesize / ecc->size; if (mtd->oobsize < ((ecc->bytes + 4) * nsectors)) { @@ -1072,9 +1116,7 @@ static int sunxi_nand_hw_common_ecc_ctrl_init(struct mtd_info *mtd, goto err; } - layout->eccbytes = (ecc->bytes * nsectors); - - ecc->layout = layout; + mtd_set_ooblayout(mtd, &sunxi_nand_ooblayout_ops); ecc->priv = data; return 0; @@ -1094,9 +1136,6 @@ static int sunxi_nand_hw_ecc_ctrl_init(struct mtd_info *mtd, struct nand_ecc_ctrl *ecc, struct device_node *np) { - struct nand_ecclayout *layout; - int nsectors; - int i, j; int ret; ret = sunxi_nand_hw_common_ecc_ctrl_init(mtd, ecc, np); @@ -1105,40 +1144,6 @@ static int sunxi_nand_hw_ecc_ctrl_init(struct mtd_info *mtd, ecc->read_page = sunxi_nfc_hw_ecc_read_page; ecc->write_page = sunxi_nfc_hw_ecc_write_page; - layout = ecc->layout; - nsectors = mtd->writesize / ecc->size; - - for (i = 0; i < nsectors; i++) { - if (i) { - layout->oobfree[i].offset = - layout->oobfree[i - 1].offset + - layout->oobfree[i - 1].length + - ecc->bytes; - layout->oobfree[i].length = 4; - } else { - /* - * The first 2 bytes are used for BB markers, hence we - * only have 2 bytes available in the first user data - * section. - */ - layout->oobfree[i].length = 2; - layout->oobfree[i].offset = 2; - } - - for (j = 0; j < ecc->bytes; j++) - layout->eccpos[(ecc->bytes * i) + j] = - layout->oobfree[i].offset + - layout->oobfree[i].length + j; - } - - if (mtd->oobsize > (ecc->bytes + 4) * nsectors) { - layout->oobfree[nsectors].offset = - layout->oobfree[nsectors - 1].offset + - layout->oobfree[nsectors - 1].length + - ecc->bytes; - layout->oobfree[nsectors].length = mtd->oobsize - - ((ecc->bytes + 4) * nsectors); - } return 0; } @@ -1147,9 +1152,6 @@ static int sunxi_nand_hw_syndrome_ecc_ctrl_init(struct mtd_info *mtd, struct nand_ecc_ctrl *ecc, struct device_node *np) { - struct nand_ecclayout *layout; - int nsectors; - int i; int ret; ret = sunxi_nand_hw_common_ecc_ctrl_init(mtd, ecc, np); @@ -1160,15 +1162,6 @@ static int sunxi_nand_hw_syndrome_ecc_ctrl_init(struct mtd_info *mtd, ecc->read_page = sunxi_nfc_hw_syndrome_ecc_read_page; ecc->write_page = sunxi_nfc_hw_syndrome_ecc_write_page; - layout = ecc->layout; - nsectors = mtd->writesize / ecc->size; - - for (i = 0; i < (ecc->bytes * nsectors); i++) - layout->eccpos[i] = i; - - layout->oobfree[0].length = mtd->oobsize - i; - layout->oobfree[0].offset = i; - return 0; } @@ -1180,7 +1173,6 @@ static void sunxi_nand_ecc_cleanup(struct nand_ecc_ctrl *ecc) sunxi_nand_hw_common_ecc_ctrl_cleanup(ecc); break; case NAND_ECC_NONE: - kfree(ecc->layout); default: break; } @@ -1214,10 +1206,6 @@ static int sunxi_nand_ecc_init(struct mtd_info *mtd, struct nand_ecc_ctrl *ecc, return ret; break; case NAND_ECC_NONE: - ecc->layout = kzalloc(sizeof(*ecc->layout), GFP_KERNEL); - if (!ecc->layout) - return -ENOMEM; - ecc->layout->oobfree[0].length = mtd->oobsize; case NAND_ECC_SOFT: break; default: diff --git a/drivers/mtd/nand/vf610_nfc.c b/drivers/mtd/nand/vf610_nfc.c index 0413e24..9055ee5 100644 --- a/drivers/mtd/nand/vf610_nfc.c +++ b/drivers/mtd/nand/vf610_nfc.c @@ -173,34 +173,6 @@ struct vf610_nfc { #define mtd_to_nfc(_mtd) container_of(_mtd, struct vf610_nfc, mtd) -static struct nand_ecclayout vf610_nfc_ecc45 = { - .eccbytes = 45, - .eccpos = {19, 20, 21, 22, 23, - 24, 25, 26, 27, 28, 29, 30, 31, - 32, 33, 34, 35, 36, 37, 38, 39, - 40, 41, 42, 43, 44, 45, 46, 47, - 48, 49, 50, 51, 52, 53, 54, 55, - 56, 57, 58, 59, 60, 61, 62, 63}, - .oobfree = { - {.offset = 2, - .length = 17} } -}; - -static struct nand_ecclayout vf610_nfc_ecc60 = { - .eccbytes = 60, - .eccpos = { 4, 5, 6, 7, 8, 9, 10, 11, - 12, 13, 14, 15, 16, 17, 18, 19, - 20, 21, 22, 23, 24, 25, 26, 27, - 28, 29, 30, 31, 32, 33, 34, 35, - 36, 37, 38, 39, 40, 41, 42, 43, - 44, 45, 46, 47, 48, 49, 50, 51, - 52, 53, 54, 55, 56, 57, 58, 59, - 60, 61, 62, 63 }, - .oobfree = { - {.offset = 2, - .length = 2} } -}; - static inline u32 vf610_nfc_read(struct vf610_nfc *nfc, uint reg) { return readl(nfc->regs + reg); @@ -780,14 +752,16 @@ static int vf610_nfc_probe(struct platform_device *pdev) if (mtd->oobsize > 64) mtd->oobsize = 64; + /* + * mtd->ecclayout is not specified here because we're using the + * default large page ECC layout defined in NAND core. + */ if (chip->ecc.strength == 32) { nfc->ecc_mode = ECC_60_BYTE; chip->ecc.bytes = 60; - chip->ecc.layout = &vf610_nfc_ecc60; } else if (chip->ecc.strength == 24) { nfc->ecc_mode = ECC_45_BYTE; chip->ecc.bytes = 45; - chip->ecc.layout = &vf610_nfc_ecc45; } else { dev_err(nfc->dev, "Unsupported ECC strength\n"); err = -ENXIO; diff --git a/include/linux/mtd/sharpsl.h b/include/linux/mtd/sharpsl.h index 25f4d2a..a8c23b2 100644 --- a/include/linux/mtd/sharpsl.h +++ b/include/linux/mtd/sharpsl.h @@ -14,7 +14,7 @@ struct sharpsl_nand_platform_data { struct nand_bbt_descr *badblock_pattern; - struct nand_ecclayout *ecc_layout; + struct nand_ooblayout_ops *ecc_layout; struct mtd_partition *partitions; unsigned int nr_partitions; }; -- 2.1.4 _______________________________________________ devel mailing list de...@linuxdriverproject.org http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
