diff --git a/drivers/mtd/nand/raw/denali.c b/drivers/mtd/nand/raw/denali.c index 24aeafc67cd4..e99d59d85197 100644 --- a/drivers/mtd/nand/raw/denali.c +++ b/drivers/mtd/nand/raw/denali.c @@ -1096,6 +1096,9 @@ static int denali_multidev_fixup(struct denali_nand_info *denali) { struct nand_chip *chip = &denali->nand; struct mtd_info *mtd = nand_to_mtd(chip); + struct nand_memory_organization *memorg; + + memorg = nanddev_get_memorg(&chip->base); /* * Support for multi device: @@ -1125,6 +1128,8 @@ static int denali_multidev_fixup(struct denali_nand_info *denali) } /* 2 chips in parallel */ + memorg->pagesize <<= 1; + memorg->oobsize <<= 1; mtd->size <<= 1; mtd->erasesize <<= 1; mtd->writesize <<= 1; diff --git a/drivers/mtd/nand/raw/diskonchip.c b/drivers/mtd/nand/raw/diskonchip.c index ead54c90f2d1..2e0da6a24bfd 100644 --- a/drivers/mtd/nand/raw/diskonchip.c +++ b/drivers/mtd/nand/raw/diskonchip.c @@ -1028,6 +1028,7 @@ static inline int __init nftl_partscan(struct mtd_info *mtd, struct mtd_partitio { struct nand_chip *this = mtd_to_nand(mtd); struct doc_priv *doc = nand_get_controller_data(this); + struct nand_memory_organization *memorg; int ret = 0; u_char *buf; struct NFTLMediaHeader *mh; @@ -1036,6 +1037,8 @@ static inline int __init nftl_partscan(struct mtd_info *mtd, struct mtd_partitio unsigned blocks, maxblocks; int offs, numheaders; + memorg = nanddev_get_memorg(&this->base); + buf = kmalloc(mtd->writesize, GFP_KERNEL); if (!buf) { return 0; @@ -1082,6 +1085,7 @@ static inline int __init nftl_partscan(struct mtd_info *mtd, struct mtd_partitio implementation of the NAND layer. */ if (mh->UnitSizeFactor != 0xff) { this->bbt_erase_shift += (0xff - mh->UnitSizeFactor); + memorg->pages_per_eraseblock <<= (0xff - mh->UnitSizeFactor); mtd->erasesize <<= (0xff - mh->UnitSizeFactor); pr_info("Setting virtual erase size to %d\n", mtd->erasesize); blocks = mtd->size >> this->bbt_erase_shift; diff --git a/drivers/mtd/nand/raw/ingenic/jz4740_nand.c b/drivers/mtd/nand/raw/ingenic/jz4740_nand.c index 9526d5b23c80..d5715dde4237 100644 --- a/drivers/mtd/nand/raw/ingenic/jz4740_nand.c +++ b/drivers/mtd/nand/raw/ingenic/jz4740_nand.c @@ -313,8 +313,11 @@ static int jz_nand_detect_bank(struct platform_device *pdev, uint32_t ctrl; struct nand_chip *chip = &nand->chip; struct mtd_info *mtd = nand_to_mtd(chip); + struct nand_memory_organization *memorg; u8 id[2]; + memorg = nanddev_get_memorg(&chip->base); + /* Request I/O resource. */ sprintf(res_name, "bank%d", bank); ret = jz_nand_ioremap_resource(pdev, res_name, @@ -352,6 +355,7 @@ static int jz_nand_detect_bank(struct platform_device *pdev, /* Update size of the MTD. */ chip->numchips++; + memorg->ntargets++; mtd->size += chip->chipsize; } diff --git a/drivers/mtd/nand/raw/nand_amd.c b/drivers/mtd/nand/raw/nand_amd.c index 890c5b43e03c..e008fd662ee6 100644 --- a/drivers/mtd/nand/raw/nand_amd.c +++ b/drivers/mtd/nand/raw/nand_amd.c @@ -20,6 +20,9 @@ static void amd_nand_decode_id(struct nand_chip *chip) { struct mtd_info *mtd = nand_to_mtd(chip); + struct nand_memory_organization *memorg; + + memorg = nanddev_get_memorg(&chip->base); nand_decode_ext_id(chip); @@ -31,9 +34,11 @@ static void amd_nand_decode_id(struct nand_chip *chip) */ if (chip->id.data[4] != 0x00 && chip->id.data[5] == 0x00 && chip->id.data[6] == 0x00 && chip->id.data[7] == 0x00 && - mtd->writesize == 512) { - mtd->erasesize = 128 * 1024; - mtd->erasesize <<= ((chip->id.data[3] & 0x03) << 1); + memorg->pagesize == 512) { + memorg->pages_per_eraseblock = 256; + memorg->pages_per_eraseblock <<= ((chip->id.data[3] & 0x03) << 1); + mtd->erasesize = memorg->pages_per_eraseblock * + memorg->pagesize; } } diff --git a/drivers/mtd/nand/raw/nand_base.c b/drivers/mtd/nand/raw/nand_base.c index ddd396e93e32..dbe3d96b74da 100644 --- a/drivers/mtd/nand/raw/nand_base.c +++ b/drivers/mtd/nand/raw/nand_base.c @@ -4485,21 +4485,30 @@ static int nand_get_bits_per_cell(u8 cellinfo) */ void nand_decode_ext_id(struct nand_chip *chip) { + struct nand_memory_organization *memorg; struct mtd_info *mtd = nand_to_mtd(chip); int extid; u8 *id_data = chip->id.data; + + memorg = nanddev_get_memorg(&chip->base); + /* The 3rd id byte holds MLC / multichip data */ + memorg->bits_per_cell = nand_get_bits_per_cell(id_data[2]); chip->bits_per_cell = nand_get_bits_per_cell(id_data[2]); /* The 4th id byte is the important one */ extid = id_data[3]; /* Calc pagesize */ - mtd->writesize = 1024 << (extid & 0x03); + memorg->pagesize = 1024 << (extid & 0x03); + mtd->writesize = memorg->pagesize; extid >>= 2; /* Calc oobsize */ - mtd->oobsize = (8 << (extid & 0x01)) * (mtd->writesize >> 9); + memorg->oobsize = (8 << (extid & 0x01)) * (mtd->writesize >> 9); + mtd->oobsize = memorg->oobsize; extid >>= 2; /* Calc blocksize. Blocksize is multiples of 64KiB */ + memorg->pages_per_eraseblock = ((64 * 1024) << (extid & 0x03)) / + memorg->pagesize; mtd->erasesize = (64 * 1024) << (extid & 0x03); extid >>= 2; /* Get buswidth information */ @@ -4516,12 +4525,19 @@ EXPORT_SYMBOL_GPL(nand_decode_ext_id); static void nand_decode_id(struct nand_chip *chip, struct nand_flash_dev *type) { struct mtd_info *mtd = nand_to_mtd(chip); + struct nand_memory_organization *memorg; + memorg = nanddev_get_memorg(&chip->base); + + memorg->pages_per_eraseblock = type->erasesize / type->pagesize; mtd->erasesize = type->erasesize; - mtd->writesize = type->pagesize; - mtd->oobsize = mtd->writesize / 32; + memorg->pagesize = type->pagesize; + mtd->writesize = memorg->pagesize; + memorg->oobsize = memorg->pagesize / 32; + mtd->oobsize = memorg->oobsize; /* All legacy ID NAND are small-page, SLC */ + memorg->bits_per_cell = 1; chip->bits_per_cell = 1; } @@ -4550,15 +4566,27 @@ static bool find_full_id_nand(struct nand_chip *chip, struct nand_flash_dev *type) { struct mtd_info *mtd = nand_to_mtd(chip); + struct nand_memory_organization *memorg; u8 *id_data = chip->id.data; - if (!strncmp(type->id, id_data, type->id_len)) { - mtd->writesize = type->pagesize; - mtd->erasesize = type->erasesize; - mtd->oobsize = type->oobsize; + memorg = nanddev_get_memorg(&chip->base); + if (!strncmp(type->id, id_data, type->id_len)) { + memorg->pagesize = type->pagesize; + mtd->writesize = memorg->pagesize; + memorg->pages_per_eraseblock = type->erasesize / + type->pagesize; + mtd->erasesize = type->erasesize; + memorg->oobsize = type->oobsize; + mtd->oobsize = memorg->oobsize; + + memorg->bits_per_cell = nand_get_bits_per_cell(id_data[2]); chip->bits_per_cell = nand_get_bits_per_cell(id_data[2]); chip->chipsize = (uint64_t)type->chipsize << 20; + memorg->eraseblocks_per_lun = + DIV_ROUND_DOWN_ULL((u64)type->chipsize << 20, + memorg->pagesize * + memorg->pages_per_eraseblock); chip->options |= type->options; chip->ecc_strength_ds = NAND_ECC_STRENGTH(type); chip->ecc_step_ds = NAND_ECC_STEP(type); @@ -4587,7 +4615,12 @@ static void nand_manufacturer_detect(struct nand_chip *chip) */ if (chip->manufacturer.desc && chip->manufacturer.desc->ops && chip->manufacturer.desc->ops->detect) { + struct nand_memory_organization *memorg; + + memorg = nanddev_get_memorg(&chip->base); + /* The 3rd id byte holds MLC / multichip data */ + memorg->bits_per_cell = nand_get_bits_per_cell(chip->id.data[2]); chip->bits_per_cell = nand_get_bits_per_cell(chip->id.data[2]); chip->manufacturer.desc->ops->detect(chip); } else { @@ -4637,10 +4670,20 @@ static int nand_detect(struct nand_chip *chip, struct nand_flash_dev *type) { const struct nand_manufacturer *manufacturer; struct mtd_info *mtd = nand_to_mtd(chip); + struct nand_memory_organization *memorg; int busw, ret; u8 *id_data = chip->id.data; u8 maf_id, dev_id; + /* + * Let's start by initializing memorg fields that might be left + * unassigned by the ID-based detection logic. + */ + memorg = nanddev_get_memorg(&chip->base); + memorg->planes_per_lun = 1; + memorg->luns_per_target = 1; + memorg->ntargets = 1; + /* * Reset the chip, required by some chips (e.g. Micron MT29FxGxxxxx) * after power-up. @@ -4745,6 +4788,11 @@ static int nand_detect(struct nand_chip *chip, struct nand_flash_dev *type) /* Get chip options */ chip->options |= type->options; + memorg->eraseblocks_per_lun = + DIV_ROUND_DOWN_ULL((u64)type->chipsize << 20, + memorg->pagesize * + memorg->pages_per_eraseblock); + ident_done: if (!mtd->name) mtd->name = chip->parameters.model; @@ -4971,10 +5019,13 @@ static int nand_scan_ident(struct nand_chip *chip, unsigned int maxchips, struct nand_flash_dev *table) { struct mtd_info *mtd = nand_to_mtd(chip); + struct nand_memory_organization *memorg; int nand_maf_id, nand_dev_id; unsigned int i; int ret; + memorg = nanddev_get_memorg(&chip->base); + /* Assume all dies are deselected when we enter nand_scan_ident(). */ chip->cur_cs = -1; @@ -5042,6 +5093,7 @@ static int nand_scan_ident(struct nand_chip *chip, unsigned int maxchips, pr_info("%d chips detected\n", i); /* Store the number of chips and calc total size for mtd */ + memorg->ntargets = i; chip->numchips = i; mtd->size = i * chip->chipsize; diff --git a/drivers/mtd/nand/raw/nand_hynix.c b/drivers/mtd/nand/raw/nand_hynix.c index 343f477362d1..94ea8c593589 100644 --- a/drivers/mtd/nand/raw/nand_hynix.c +++ b/drivers/mtd/nand/raw/nand_hynix.c @@ -418,24 +418,27 @@ static void hynix_nand_extract_oobsize(struct nand_chip *chip, bool valid_jedecid) { struct mtd_info *mtd = nand_to_mtd(chip); + struct nand_memory_organization *memorg; u8 oobsize; + memorg = nanddev_get_memorg(&chip->base); + oobsize = ((chip->id.data[3] >> 2) & 0x3) | ((chip->id.data[3] >> 4) & 0x4); if (valid_jedecid) { switch (oobsize) { case 0: - mtd->oobsize = 2048; + memorg->oobsize = 2048; break; case 1: - mtd->oobsize = 1664; + memorg->oobsize = 1664; break; case 2: - mtd->oobsize = 1024; + memorg->oobsize = 1024; break; case 3: - mtd->oobsize = 640; + memorg->oobsize = 640; break; default: /* @@ -450,25 +453,25 @@ static void hynix_nand_extract_oobsize(struct nand_chip *chip, } else { switch (oobsize) { case 0: - mtd->oobsize = 128; + memorg->oobsize = 128; break; case 1: - mtd->oobsize = 224; + memorg->oobsize = 224; break; case 2: - mtd->oobsize = 448; + memorg->oobsize = 448; break; case 3: - mtd->oobsize = 64; + memorg->oobsize = 64; break; case 4: - mtd->oobsize = 32; + memorg->oobsize = 32; break; case 5: - mtd->oobsize = 16; + memorg->oobsize = 16; break; case 6: - mtd->oobsize = 640; + memorg->oobsize = 640; break; default: /* @@ -492,8 +495,10 @@ static void hynix_nand_extract_oobsize(struct nand_chip *chip, * the actual OOB size for this chip is: 640 * 16k / 8k). */ if (chip->id.data[1] == 0xde) - mtd->oobsize *= mtd->writesize / SZ_8K; + memorg->oobsize *= memorg->pagesize / SZ_8K; } + + mtd->oobsize = memorg->oobsize; } static void hynix_nand_extract_ecc_requirements(struct nand_chip *chip, @@ -609,9 +614,12 @@ static void hynix_nand_extract_scrambling_requirements(struct nand_chip *chip, static void hynix_nand_decode_id(struct nand_chip *chip) { struct mtd_info *mtd = nand_to_mtd(chip); + struct nand_memory_organization *memorg; bool valid_jedecid; u8 tmp; + memorg = nanddev_get_memorg(&chip->base); + /* * Exclude all SLC NANDs from this advanced detection scheme. * According to the ranges defined in several datasheets, it might @@ -625,7 +633,8 @@ static void hynix_nand_decode_id(struct nand_chip *chip) } /* Extract pagesize */ - mtd->writesize = 2048 << (chip->id.data[3] & 0x03); + memorg->pagesize = 2048 << (chip->id.data[3] & 0x03); + mtd->writesize = memorg->pagesize; tmp = (chip->id.data[3] >> 4) & 0x3; /* @@ -635,12 +644,19 @@ static void hynix_nand_decode_id(struct nand_chip *chip) * The only exception is when ID[3][4:5] == 3 and ID[3][7] == 0, in * this case the erasesize is set to 768KiB. */ - if (chip->id.data[3] & 0x80) + if (chip->id.data[3] & 0x80) { + memorg->pages_per_eraseblock = (SZ_1M << tmp) / + memorg->pagesize; mtd->erasesize = SZ_1M << tmp; - else if (tmp == 3) + } else if (tmp == 3) { + memorg->pages_per_eraseblock = (SZ_512K + SZ_256K) / + memorg->pagesize; mtd->erasesize = SZ_512K + SZ_256K; - else + } else { + memorg->pages_per_eraseblock = (SZ_128K << tmp) / + memorg->pagesize; mtd->erasesize = SZ_128K << tmp; + } /* * Modern Toggle DDR NANDs have a valid JEDECID even though they are diff --git a/drivers/mtd/nand/raw/nand_jedec.c b/drivers/mtd/nand/raw/nand_jedec.c index 38b5dc22cb30..61e33ee7ee19 100644 --- a/drivers/mtd/nand/raw/nand_jedec.c +++ b/drivers/mtd/nand/raw/nand_jedec.c @@ -22,12 +22,15 @@ int nand_jedec_detect(struct nand_chip *chip) { struct mtd_info *mtd = nand_to_mtd(chip); + struct nand_memory_organization *memorg; struct nand_jedec_params *p; struct jedec_ecc_info *ecc; int jedec_version = 0; char id[5]; int i, val, ret; + memorg = nanddev_get_memorg(&chip->base); + /* Try JEDEC for unknown chip or LP */ ret = nand_readid_op(chip, 0x40, id, sizeof(id)); if (ret || strncmp(id, "JEDEC", sizeof(id))) @@ -81,17 +84,26 @@ int nand_jedec_detect(struct nand_chip *chip) goto free_jedec_param_page; } - mtd->writesize = le32_to_cpu(p->byte_per_page); + memorg->pagesize = le32_to_cpu(p->byte_per_page); + mtd->writesize = memorg->pagesize; /* Please reference to the comment for nand_flash_detect_onfi. */ - mtd->erasesize = 1 << (fls(le32_to_cpu(p->pages_per_block)) - 1); - mtd->erasesize *= mtd->writesize; + memorg->pages_per_eraseblock = + 1 << (fls(le32_to_cpu(p->pages_per_block)) - 1); + mtd->erasesize = memorg->pages_per_eraseblock * memorg->pagesize; - mtd->oobsize = le16_to_cpu(p->spare_bytes_per_page); + memorg->oobsize = le16_to_cpu(p->spare_bytes_per_page); + mtd->oobsize = memorg->oobsize; + + memorg->luns_per_target = p->lun_count; + memorg->planes_per_lun = 1 << p->multi_plane_addr; /* Please reference to the comment for nand_flash_detect_onfi. */ - chip->chipsize = 1 << (fls(le32_to_cpu(p->blocks_per_lun)) - 1); + memorg->eraseblocks_per_lun = + 1 << (fls(le32_to_cpu(p->blocks_per_lun)) - 1); + chip->chipsize = memorg->eraseblocks_per_lun; chip->chipsize *= (uint64_t)mtd->erasesize * p->lun_count; + memorg->bits_per_cell = p->bits_per_cell; chip->bits_per_cell = p->bits_per_cell; if (le16_to_cpu(p->features) & JEDEC_FEATURE_16_BIT_BUS) diff --git a/drivers/mtd/nand/raw/nand_onfi.c b/drivers/mtd/nand/raw/nand_onfi.c index d8184cf591ad..f3f59cf37d7f 100644 --- a/drivers/mtd/nand/raw/nand_onfi.c +++ b/drivers/mtd/nand/raw/nand_onfi.c @@ -140,12 +140,15 @@ static void nand_bit_wise_majority(const void **srcbufs, int nand_onfi_detect(struct nand_chip *chip) { struct mtd_info *mtd = nand_to_mtd(chip); + struct nand_memory_organization *memorg; struct nand_onfi_params *p; struct onfi_params *onfi; int onfi_version = 0; char id[4]; int i, ret, val; + memorg = nanddev_get_memorg(&chip->base); + /* Try ONFI for unknown chip or LP */ ret = nand_readid_op(chip, 0x20, id, sizeof(id)); if (ret || strncmp(id, "ONFI", 4)) @@ -221,21 +224,31 @@ int nand_onfi_detect(struct nand_chip *chip) goto free_onfi_param_page; } - mtd->writesize = le32_to_cpu(p->byte_per_page); + memorg->pagesize = le32_to_cpu(p->byte_per_page); + mtd->writesize = memorg->pagesize; /* * pages_per_block and blocks_per_lun may not be a power-of-2 size * (don't ask me who thought of this...). MTD assumes that these * dimensions will be power-of-2, so just truncate the remaining area. */ - mtd->erasesize = 1 << (fls(le32_to_cpu(p->pages_per_block)) - 1); - mtd->erasesize *= mtd->writesize; + memorg->pages_per_eraseblock = + 1 << (fls(le32_to_cpu(p->pages_per_block)) - 1); + mtd->erasesize = memorg->pages_per_eraseblock * memorg->pagesize; - mtd->oobsize = le16_to_cpu(p->spare_bytes_per_page); + memorg->oobsize = le16_to_cpu(p->spare_bytes_per_page); + mtd->oobsize = memorg->oobsize; + + memorg->luns_per_target = p->lun_count; + memorg->planes_per_lun = 1 << p->interleaved_bits; /* See erasesize comment */ - chip->chipsize = 1 << (fls(le32_to_cpu(p->blocks_per_lun)) - 1); + memorg->eraseblocks_per_lun = + 1 << (fls(le32_to_cpu(p->blocks_per_lun)) - 1); + memorg->max_bad_eraseblocks_per_lun = le32_to_cpu(p->blocks_per_lun); + chip->chipsize = memorg->eraseblocks_per_lun; chip->chipsize *= (uint64_t)mtd->erasesize * p->lun_count; + memorg->bits_per_cell = p->bits_per_cell; chip->bits_per_cell = p->bits_per_cell; chip->max_bb_per_die = le16_to_cpu(p->bb_per_lun); diff --git a/drivers/mtd/nand/raw/nand_samsung.c b/drivers/mtd/nand/raw/nand_samsung.c index e46d4c492ad8..9a9ad43cc97d 100644 --- a/drivers/mtd/nand/raw/nand_samsung.c +++ b/drivers/mtd/nand/raw/nand_samsung.c @@ -20,6 +20,9 @@ static void samsung_nand_decode_id(struct nand_chip *chip) { struct mtd_info *mtd = nand_to_mtd(chip); + struct nand_memory_organization *memorg; + + memorg = nanddev_get_memorg(&chip->base); /* New Samsung (6 byte ID): Samsung K9GAG08U0F (p.44) */ if (chip->id.len == 6 && !nand_is_slc(chip) && @@ -27,29 +30,30 @@ static void samsung_nand_decode_id(struct nand_chip *chip) u8 extid = chip->id.data[3]; /* Get pagesize */ - mtd->writesize = 2048 << (extid & 0x03); + memorg->pagesize = 2048 << (extid & 0x03); + mtd->writesize = memorg->pagesize; extid >>= 2; /* Get oobsize */ switch (((extid >> 2) & 0x4) | (extid & 0x3)) { case 1: - mtd->oobsize = 128; + memorg->oobsize = 128; break; case 2: - mtd->oobsize = 218; + memorg->oobsize = 218; break; case 3: - mtd->oobsize = 400; + memorg->oobsize = 400; break; case 4: - mtd->oobsize = 436; + memorg->oobsize = 436; break; case 5: - mtd->oobsize = 512; + memorg->oobsize = 512; break; case 6: - mtd->oobsize = 640; + memorg->oobsize = 640; break; default: /* @@ -62,8 +66,14 @@ static void samsung_nand_decode_id(struct nand_chip *chip) break; } + mtd->oobsize = memorg->oobsize; + /* Get blocksize */ extid >>= 2; + memorg->pages_per_eraseblock = (128 * 1024) << + (((extid >> 1) & 0x04) | + (extid & 0x03)) / + memorg->pagesize; mtd->erasesize = (128 * 1024) << (((extid >> 1) & 0x04) | (extid & 0x03)); diff --git a/drivers/mtd/nand/raw/nand_toshiba.c b/drivers/mtd/nand/raw/nand_toshiba.c index d068163b64b3..d8465049dfd6 100644 --- a/drivers/mtd/nand/raw/nand_toshiba.c +++ b/drivers/mtd/nand/raw/nand_toshiba.c @@ -101,6 +101,9 @@ static void toshiba_nand_benand_init(struct nand_chip *chip) static void toshiba_nand_decode_id(struct nand_chip *chip) { struct mtd_info *mtd = nand_to_mtd(chip); + struct nand_memory_organization *memorg; + + memorg = nanddev_get_memorg(&chip->base); nand_decode_ext_id(chip); @@ -114,8 +117,10 @@ static void toshiba_nand_decode_id(struct nand_chip *chip) */ if (chip->id.len >= 6 && nand_is_slc(chip) && (chip->id.data[5] & 0x7) == 0x6 /* 24nm */ && - !(chip->id.data[4] & 0x80) /* !BENAND */) - mtd->oobsize = 32 * mtd->writesize >> 9; + !(chip->id.data[4] & 0x80) /* !BENAND */) { + memorg->oobsize = 32 * memorg->pagesize >> 9; + mtd->oobsize = memorg->oobsize; + } /* * Extract ECC requirements from 6th id byte. diff --git a/drivers/mtd/nand/raw/nandsim.c b/drivers/mtd/nand/raw/nandsim.c index edf5fd3d5f07..bf54733f8b5b 100644 --- a/drivers/mtd/nand/raw/nandsim.c +++ b/drivers/mtd/nand/raw/nandsim.c @@ -2304,6 +2304,10 @@ static int __init ns_init_module(void) if (overridesize) { uint64_t new_size = (uint64_t)nsmtd->erasesize << overridesize; + struct nand_memory_organization *memorg; + + memorg = nanddev_get_memorg(&chip->base); + if (new_size >> overridesize != nsmtd->erasesize) { NS_ERR("overridesize is too big\n"); retval = -EINVAL; @@ -2311,6 +2315,7 @@ static int __init ns_init_module(void) } /* N.B. This relies on nand_scan not doing anything with the size before we change it */ nsmtd->size = new_size; + memorg->eraseblocks_per_lun = 1 << overridesize; chip->chipsize = new_size; chip->chip_shift = ffs(nsmtd->erasesize) + overridesize - 1; chip->pagemask = (chip->chipsize >> chip->page_shift) - 1;