[U-Boot] [PATCH] mtd: resync with Linux-3.7.1

From: Brian Norris computersforpeace@gmail.com

This patch is essentially an update of u-boot MTD subsystem to the state of Linux-3.7.1 with exclusion of some bits:

- the update is concentrated on NAND, no onenand or CFI/NOR/SPI flashes interfaces are updated EXCEPT for API changes.

- new large NAND chips support is there, though some updates have got in Linux-3.8.-rc1, (which will follow on top of this patch).

To produce this update I used tag v3.7.1 of linux-stable repository.

The update was made using application of relevant patches, with changes relevant to U-Boot-only stuff sticked together to keep bisectability. Then all changes were grouped together to this patch.

Signed-off-by: Sergey Lapin slapin@ossfans.org --- board/ait/cam_enc_4xx/cam_enc_4xx.c | 12 +- common/cmd_nand.c | 18 +- common/cmd_onenand.c | 30 +- common/env_onenand.c | 6 +- drivers/mtd/Makefile | 4 +- drivers/mtd/cfi_mtd.c | 12 +- drivers/mtd/mtdconcat.c | 98 +-- drivers/mtd/mtdcore.c | 191 ++++ drivers/mtd/mtdpart.c | 158 ++-- drivers/mtd/nand/atmel_nand.c | 16 +- drivers/mtd/nand/davinci_nand.c | 2 +- drivers/mtd/nand/diskonchip.c | 12 +- drivers/mtd/nand/fsl_elbc_nand.c | 16 +- drivers/mtd/nand/fsl_ifc_nand.c | 16 +- drivers/mtd/nand/fsmc_nand.c | 3 +- drivers/mtd/nand/mpc5121_nfc.c | 2 +- drivers/mtd/nand/mxc_nand.c | 18 +- drivers/mtd/nand/mxs_nand.c | 31 +- drivers/mtd/nand/nand_base.c | 1655 ++++++++++++++++++++--------------- drivers/mtd/nand/nand_bbt.c | 822 ++++++++--------- drivers/mtd/nand/nand_ids.c | 14 +- drivers/mtd/nand/nand_util.c | 21 +- drivers/mtd/nand/omap_gpmc.c | 2 +- drivers/mtd/nand/tegra_nand.c | 26 +- drivers/mtd/nand/tegra_nand.h | 2 +- drivers/mtd/onenand/onenand_base.c | 82 +- drivers/mtd/onenand/onenand_bbt.c | 6 +- drivers/mtd/ubi/build.c | 2 +- drivers/mtd/ubi/eba.c | 2 +- drivers/mtd/ubi/io.c | 12 +- drivers/mtd/ubi/kapi.c | 2 +- drivers/mtd/ubi/misc.c | 2 +- drivers/mtd/ubi/vtbl.c | 2 +- fs/yaffs2/yaffs_mtdif.c | 18 +- fs/yaffs2/yaffs_mtdif2.c | 14 +- include/linux/mtd/bbm.h | 49 +- include/linux/mtd/mtd-abi.h | 158 ---- include/linux/mtd/mtd.h | 203 +++-- include/linux/mtd/nand.h | 173 ++-- include/linux/string.h | 3 + include/mtd/mtd-abi.h | 209 +++++ include/nand.h | 8 +- lib/string.c | 59 ++ 43 files changed, 2333 insertions(+), 1858 deletions(-) delete mode 100644 include/linux/mtd/mtd-abi.h create mode 100644 include/mtd/mtd-abi.h

diff --git a/board/ait/cam_enc_4xx/cam_enc_4xx.c b/board/ait/cam_enc_4xx/cam_enc_4xx.c index 32b28f9..2a0c31c 100644 --- a/board/ait/cam_enc_4xx/cam_enc_4xx.c +++ b/board/ait/cam_enc_4xx/cam_enc_4xx.c @@ -120,7 +120,7 @@ int board_eth_init(bd_t *bis) #ifdef CONFIG_NAND_DAVINCI static int davinci_std_read_page_syndrome(struct mtd_info *mtd, struct nand_chip *chip, - uint8_t *buf, int page) + uint8_t *buf, int oob_required, int page) { struct nand_chip *this = mtd->priv; int i, eccsize = chip->ecc.size; @@ -167,8 +167,9 @@ davinci_std_read_page_syndrome(struct mtd_info *mtd, struct nand_chip *chip, return 0; }

-static void davinci_std_write_page_syndrome(struct mtd_info *mtd, - struct nand_chip *chip, const uint8_t *buf) +static int davinci_std_write_page_syndrome(struct mtd_info *mtd, + struct nand_chip *chip, const uint8_t *buf, + int oob_required) { unsigned char davinci_ecc_buf[NAND_MAX_OOBSIZE]; struct nand_chip *this = mtd->priv; @@ -218,6 +219,7 @@ static void davinci_std_write_page_syndrome(struct mtd_info *mtd, i = mtd->oobsize - (oob - chip->oob_poi); if (i) chip->write_buf(mtd, oob, i); + return 0; }

static int davinci_std_write_oob_syndrome(struct mtd_info *mtd, @@ -239,7 +241,7 @@ static int davinci_std_write_oob_syndrome(struct mtd_info *mtd, }

static int davinci_std_read_oob_syndrome(struct mtd_info *mtd, - struct nand_chip *chip, int page, int sndcmd) + struct nand_chip *chip, int page) { struct nand_chip *this = mtd->priv; uint8_t *buf = chip->oob_poi; @@ -249,7 +251,7 @@ static int davinci_std_read_oob_syndrome(struct mtd_info *mtd,

chip->read_buf(mtd, bufpoi, mtd->oobsize);

- return 1; + return 0; }

static void nand_dm365evm_select_chip(struct mtd_info *mtd, int chip) diff --git a/common/cmd_nand.c b/common/cmd_nand.c index 1568594..c4ba0b3 100644 --- a/common/cmd_nand.c +++ b/common/cmd_nand.c @@ -62,8 +62,8 @@ static int nand_dump(nand_info_t *nand, ulong off, int only_oob, int repeat) ops.oobbuf = oobbuf; ops.len = nand->writesize; ops.ooblen = nand->oobsize; - ops.mode = MTD_OOB_RAW; - i = nand->read_oob(nand, addr, &ops); + ops.mode = MTD_OPS_RAW; + i = mtd_read_oob(nand, addr, &ops); if (i < 0) { printf("Error (%d) reading page %08lx\n", i, off); free(datbuf); @@ -407,13 +407,13 @@ static int raw_access(nand_info_t *nand, ulong addr, loff_t off, ulong count, .oobbuf = ((u8 *)addr) + nand->writesize, .len = nand->writesize, .ooblen = nand->oobsize, - .mode = MTD_OOB_RAW + .mode = MTD_OPS_RAW };

if (read) - ret = nand->read_oob(nand, off, &ops); + ret = mtd_read_oob(nand, off, &ops); else - ret = nand->write_oob(nand, off, &ops); + ret = mtd_write_oob(nand, off, &ops);

if (ret) { printf("%s: error at offset %llx, ret %d\n", @@ -680,13 +680,13 @@ static int do_nand(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) mtd_oob_ops_t ops = { .oobbuf = (u8 *)addr, .ooblen = rwsize, - .mode = MTD_OOB_RAW + .mode = MTD_OPS_RAW };

if (read) - ret = nand->read_oob(nand, off, &ops); + ret = mtd_read_oob(nand, off, &ops); else - ret = nand->write_oob(nand, off, &ops); + ret = mtd_write_oob(nand, off, &ops); } else if (raw) { ret = raw_access(nand, addr, off, pagecount, read); } else { @@ -729,7 +729,7 @@ static int do_nand(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) while (argc > 0) { addr = simple_strtoul(*argv, NULL, 16);

- if (nand->block_markbad(nand, addr)) { + if (mtd_block_markbad(nand, addr)) { printf("block 0x%08lx NOT marked " "as bad! ERROR %d\n", addr, ret); diff --git a/common/cmd_onenand.c b/common/cmd_onenand.c index a0d25e5..06cc140 100644 --- a/common/cmd_onenand.c +++ b/common/cmd_onenand.c @@ -83,7 +83,7 @@ static int onenand_block_read(loff_t from, size_t len, ops.len = blocksize;

while (blocks) { - ret = mtd->block_isbad(mtd, ofs); + ret = mtd_block_isbad(mtd, ofs); if (ret) { printk("Bad blocks %d at 0x%x\n", (u32)(ofs >> this->erase_shift), (u32)ofs); @@ -97,7 +97,7 @@ static int onenand_block_read(loff_t from, size_t len, ops.datbuf = buf;

ops.retlen = 0; - ret = mtd->read_oob(mtd, ofs, &ops); + ret = mtd_read_oob(mtd, ofs, &ops); if (ret) { printk("Read failed 0x%x, %d\n", (u32)ofs, ret); ofs += blocksize; @@ -118,7 +118,7 @@ static int onenand_write_oneblock_withoob(loff_t to, const u_char * buf, struct mtd_oob_ops ops = { .len = mtd->writesize, .ooblen = mtd->oobsize, - .mode = MTD_OOB_AUTO, + .mode = MTD_OPS_AUTO_OOB, }; int page, ret = 0; for (page = 0; page < (mtd->erasesize / mtd->writesize); page ++) { @@ -126,7 +126,7 @@ static int onenand_write_oneblock_withoob(loff_t to, const u_char * buf, buf += mtd->writesize; ops.oobbuf = (u_char *)buf; buf += mtd->oobsize; - ret = mtd->write_oob(mtd, to, &ops); + ret = mtd_write_oob(mtd, to, &ops); if (ret) break; to += mtd->writesize; @@ -156,7 +156,7 @@ static int onenand_block_write(loff_t to, size_t len, ofs = to;

while (blocks) { - ret = mtd->block_isbad(mtd, ofs); + ret = mtd_block_isbad(mtd, ofs); if (ret) { printk("Bad blocks %d at 0x%x\n", (u32)(ofs >> this->erase_shift), (u32)ofs); @@ -165,7 +165,7 @@ static int onenand_block_write(loff_t to, size_t len, }

if (!withoob) - ret = mtd->write(mtd, ofs, blocksize, &_retlen, buf); + ret = mtd_write(mtd, ofs, blocksize, &_retlen, buf); else ret = onenand_write_oneblock_withoob(ofs, buf, &_retlen); if (ret) { @@ -195,7 +195,7 @@ static int onenand_block_erase(u32 start, u32 size, int force) int blocksize = 1 << this->erase_shift;

for (ofs = start; ofs < (start + size); ofs += blocksize) { - ret = mtd->block_isbad(mtd, ofs); + ret = mtd_block_isbad(mtd, ofs); if (ret && !force) { printf("Skip erase bad block %d at 0x%x\n", (u32)(ofs >> this->erase_shift), (u32)ofs); @@ -206,7 +206,7 @@ static int onenand_block_erase(u32 start, u32 size, int force) instr.len = blocksize; instr.priv = force; instr.mtd = mtd; - ret = mtd->erase(mtd, &instr); + ret = mtd_erase(mtd, &instr); if (ret) { printf("erase failed block %d at 0x%x\n", (u32)(ofs >> this->erase_shift), (u32)ofs); @@ -261,7 +261,7 @@ static int onenand_block_test(u32 start, u32 size) while (blocks < end_block) { printf("\rTesting block %d at 0x%x", (u32)(ofs >> this->erase_shift), (u32)ofs);

- ret = mtd->block_isbad(mtd, ofs); + ret = mtd_block_isbad(mtd, ofs); if (ret) { printf("Skip erase bad block %d at 0x%x\n", (u32)(ofs >> this->erase_shift), (u32)ofs); @@ -270,19 +270,19 @@ static int onenand_block_test(u32 start, u32 size)

instr.addr = ofs; instr.len = blocksize; - ret = mtd->erase(mtd, &instr); + ret = mtd_erase(mtd, &instr); if (ret) { printk("Erase failed 0x%x, %d\n", (u32)ofs, ret); goto next; }

- ret = mtd->write(mtd, ofs, blocksize, &retlen, buf); + ret = mtd_write(mtd, ofs, blocksize, &retlen, buf); if (ret) { printk("Write failed 0x%x, %d\n", (u32)ofs, ret); goto next; }

- ret = mtd->read(mtd, ofs, blocksize, &retlen, verify_buf); + ret = mtd_read(mtd, ofs, blocksize, &retlen, verify_buf); if (ret) { printk("Read failed 0x%x, %d\n", (u32)ofs, ret); goto next; @@ -324,7 +324,7 @@ static int onenand_dump(struct mtd_info *mtd, ulong off, int only_oob) ops.len = mtd->writesize; ops.ooblen = mtd->oobsize; ops.retlen = 0; - i = mtd->read_oob(mtd, addr, &ops); + i = mtd_read_oob(mtd, addr, &ops); if (i < 0) { printf("Error (%d) reading page %08lx\n", i, off); free(datbuf); @@ -373,7 +373,7 @@ static int do_onenand_bad(cmd_tbl_t * cmdtp, int flag, int argc, char * const ar /* Currently only one OneNAND device is supported */ printf("\nDevice %d bad blocks:\n", 0); for (ofs = 0; ofs < mtd->size; ofs += mtd->erasesize) { - if (mtd->block_isbad(mtd, ofs)) + if (mtd_block_isbad(mtd, ofs)) printf(" %08x\n", (u32)ofs); }

@@ -530,7 +530,7 @@ static int do_onenand_markbad(cmd_tbl_t * cmdtp, int flag, int argc, char * cons while (argc > 0) { addr = simple_strtoul(*argv, NULL, 16);

- if (mtd->block_markbad(mtd, addr)) { + if (mtd_block_markbad(mtd, addr)) { printf("block 0x%08lx NOT marked " "as bad! ERROR %d\n", addr, ret); diff --git a/common/env_onenand.c b/common/env_onenand.c index faa903d..e8bde37 100644 --- a/common/env_onenand.c +++ b/common/env_onenand.c @@ -68,7 +68,7 @@ void env_relocate_spec(void) /* Check OneNAND exist */ if (mtd->writesize) /* Ignore read fail */ - mtd->read(mtd, env_addr, ONENAND_MAX_ENV_SIZE, + mtd_read(mtd, env_addr, ONENAND_MAX_ENV_SIZE, &retlen, (u_char *)buf); else mtd->writesize = MAX_ONENAND_PAGESIZE; @@ -113,12 +113,12 @@ int saveenv(void) #endif instr.addr = env_addr; instr.mtd = mtd; - if (mtd->erase(mtd, &instr)) { + if (mtd_erase(mtd, &instr)) { printf("OneNAND: erase failed at 0x%08llx\n", env_addr); return 1; }

- if (mtd->write(mtd, env_addr, ONENAND_MAX_ENV_SIZE, &retlen, + if (mtd_write(mtd, env_addr, ONENAND_MAX_ENV_SIZE, &retlen, (u_char *)&env_new)) { printf("OneNAND: write failed at 0x%llx\n", instr.addr); return 2; diff --git a/drivers/mtd/Makefile b/drivers/mtd/Makefile index 543c845..99f39fc 100644 --- a/drivers/mtd/Makefile +++ b/drivers/mtd/Makefile @@ -25,7 +25,9 @@ include $(TOPDIR)/config.mk

LIB := $(obj)libmtd.o

-COBJS-$(CONFIG_MTD_DEVICE) += mtdcore.o +ifneq (,$(findstring y,$(CONFIG_MTD_DEVICE)$(CONFIG_CMD_NAND)$(CONFIG_CMD_ONENAND))) +COBJS-y += mtdcore.o +endif COBJS-$(CONFIG_MTD_PARTITIONS) += mtdpart.o COBJS-$(CONFIG_MTD_CONCAT) += mtdconcat.o COBJS-$(CONFIG_HAS_DATAFLASH) += at45.o diff --git a/drivers/mtd/cfi_mtd.c b/drivers/mtd/cfi_mtd.c index 8d74fa9..bbb71a1 100644 --- a/drivers/mtd/cfi_mtd.c +++ b/drivers/mtd/cfi_mtd.c @@ -244,12 +244,12 @@ int cfi_mtd_init(void) mtd->size = fi->size; mtd->writesize = 1;

- mtd->erase = cfi_mtd_erase; - mtd->read = cfi_mtd_read; - mtd->write = cfi_mtd_write; - mtd->sync = cfi_mtd_sync; - mtd->lock = cfi_mtd_lock; - mtd->unlock = cfi_mtd_unlock; + mtd->_erase = cfi_mtd_erase; + mtd->_read = cfi_mtd_read; + mtd->_write = cfi_mtd_write; + mtd->_sync = cfi_mtd_sync; + mtd->_lock = cfi_mtd_lock; + mtd->_unlock = cfi_mtd_unlock; mtd->priv = fi;

if (add_mtd_device(mtd)) diff --git a/drivers/mtd/mtdconcat.c b/drivers/mtd/mtdconcat.c index e6d9384..31e4289 100644 --- a/drivers/mtd/mtdconcat.c +++ b/drivers/mtd/mtdconcat.c @@ -70,14 +70,14 @@ concat_read(struct mtd_info *mtd, loff_t from, size_t len, /* Entire transaction goes into this subdev */ size = len;

- err = subdev->read(subdev, from, size, &retsize, buf); + err = mtd_read(subdev, from, size, &retsize, buf);

/* Save information about bitflips! */ if (unlikely(err)) { - if (err == -EBADMSG) { + if (mtd_is_eccerr(err)) { mtd->ecc_stats.failed++; ret = err; - } else if (err == -EUCLEAN) { + } else if (mtd_is_bitflip(err)) { mtd->ecc_stats.corrected++; /* Do not overwrite -EBADMSG !! */ if (!ret) @@ -105,9 +105,6 @@ concat_write(struct mtd_info *mtd, loff_t to, size_t len, int err = -EINVAL; int i;

- if (!(mtd->flags & MTD_WRITEABLE)) - return -EROFS; - *retlen = 0;

for (i = 0; i < concat->num_subdev; i++) { @@ -124,11 +121,7 @@ concat_write(struct mtd_info *mtd, loff_t to, size_t len, else size = len;

- if (!(subdev->flags & MTD_WRITEABLE)) - err = -EROFS; - else - err = subdev->write(subdev, to, size, &retsize, buf); - + err = mtd_write(subdev, to, size, &retsize, buf); if (err) break;

@@ -165,16 +158,16 @@ concat_read_oob(struct mtd_info *mtd, loff_t from, struct mtd_oob_ops *ops) if (from + devops.len > subdev->size) devops.len = subdev->size - from;

- err = subdev->read_oob(subdev, from, &devops); + err = mtd_read_oob(subdev, from, &devops); ops->retlen += devops.retlen; ops->oobretlen += devops.oobretlen;

/* Save information about bitflips! */ if (unlikely(err)) { - if (err == -EBADMSG) { + if (mtd_is_eccerr(err)) { mtd->ecc_stats.failed++; ret = err; - } else if (err == -EUCLEAN) { + } else if (mtd_is_bitflip(err)) { mtd->ecc_stats.corrected++; /* Do not overwrite -EBADMSG !! */ if (!ret) @@ -225,7 +218,7 @@ concat_write_oob(struct mtd_info *mtd, loff_t to, struct mtd_oob_ops *ops) if (to + devops.len > subdev->size) devops.len = subdev->size - to;

- err = subdev->write_oob(subdev, to, &devops); + err = mtd_write_oob(subdev, to, &devops); ops->retlen += devops.retlen; if (err) return err; @@ -271,7 +264,7 @@ static int concat_dev_erase(struct mtd_info *mtd, struct erase_info *erase) * FIXME: Allow INTERRUPTIBLE. Which means * not having the wait_queue head on the stack. */ - err = mtd->erase(mtd, erase); + err = mtd_erase(mtd, erase); if (!err) { set_current_state(TASK_UNINTERRUPTIBLE); add_wait_queue(&waitq, &wait); @@ -294,15 +287,6 @@ static int concat_erase(struct mtd_info *mtd, struct erase_info *instr) uint64_t length, offset = 0; struct erase_info *erase;

- if (!(mtd->flags & MTD_WRITEABLE)) - return -EROFS; - - if (instr->addr > concat->mtd.size) - return -EINVAL; - - if (instr->len + instr->addr > concat->mtd.size) - return -EINVAL; - /* * Check for proper erase block alignment of the to-be-erased area. * It is easier to do this based on the super device's erase @@ -350,8 +334,6 @@ static int concat_erase(struct mtd_info *mtd, struct erase_info *instr) return -EINVAL; }

- instr->fail_addr = MTD_FAIL_ADDR_UNKNOWN; - /* make a local copy of instr to avoid modifying the caller's struct */ erase = kmalloc(sizeof (struct erase_info), GFP_KERNEL);

@@ -390,10 +372,6 @@ static int concat_erase(struct mtd_info *mtd, struct erase_info *instr) else erase->len = length;

- if (!(subdev->flags & MTD_WRITEABLE)) { - err = -EROFS; - break; - } length -= erase->len; if ((err = concat_dev_erase(subdev, erase))) { /* sanity check: should never happen since @@ -429,9 +407,6 @@ static int concat_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len) struct mtd_concat *concat = CONCAT(mtd); int i, err = -EINVAL;

- if ((len + ofs) > mtd->size) - return -EINVAL; - for (i = 0; i < concat->num_subdev; i++) { struct mtd_info *subdev = concat->subdev[i]; uint64_t size; @@ -446,7 +421,7 @@ static int concat_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len) else size = len;

- err = subdev->lock(subdev, ofs, size); + err = mtd_lock(subdev, ofs, size);

if (err) break; @@ -467,9 +442,6 @@ static int concat_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len) struct mtd_concat *concat = CONCAT(mtd); int i, err = 0;

- if ((len + ofs) > mtd->size) - return -EINVAL; - for (i = 0; i < concat->num_subdev; i++) { struct mtd_info *subdev = concat->subdev[i]; uint64_t size; @@ -484,7 +456,7 @@ static int concat_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len) else size = len;

- err = subdev->unlock(subdev, ofs, size); + err = mtd_unlock(subdev, ofs, size);

if (err) break; @@ -507,7 +479,7 @@ static void concat_sync(struct mtd_info *mtd)

for (i = 0; i < concat->num_subdev; i++) { struct mtd_info *subdev = concat->subdev[i]; - subdev->sync(subdev); + mtd_sync(subdev); } }

@@ -516,12 +488,9 @@ static int concat_block_isbad(struct mtd_info *mtd, loff_t ofs) struct mtd_concat *concat = CONCAT(mtd); int i, res = 0;

- if (!concat->subdev[0]->block_isbad) + if (!mtd_can_have_bb(concat->subdev[0])) return res;

- if (ofs > mtd->size) - return -EINVAL; - for (i = 0; i < concat->num_subdev; i++) { struct mtd_info *subdev = concat->subdev[i];

@@ -530,7 +499,7 @@ static int concat_block_isbad(struct mtd_info *mtd, loff_t ofs) continue; }

- res = subdev->block_isbad(subdev, ofs); + res = mtd_block_isbad(subdev, ofs); break; }

@@ -542,12 +511,9 @@ static int concat_block_markbad(struct mtd_info *mtd, loff_t ofs) struct mtd_concat *concat = CONCAT(mtd); int i, err = -EINVAL;

- if (!concat->subdev[0]->block_markbad) + if (!mtd_can_have_bb(concat->subdev[0])) return 0;

- if (ofs > mtd->size) - return -EINVAL; - for (i = 0; i < concat->num_subdev; i++) { struct mtd_info *subdev = concat->subdev[i];

@@ -556,7 +522,7 @@ static int concat_block_markbad(struct mtd_info *mtd, loff_t ofs) continue; }

- err = subdev->block_markbad(subdev, ofs); + err = mtd_block_markbad(subdev, ofs); if (!err) mtd->ecc_stats.badblocks++; break; @@ -609,14 +575,14 @@ struct mtd_info *mtd_concat_create(struct mtd_info *subdev[], /* subdevices to c concat->mtd.subpage_sft = subdev[0]->subpage_sft; concat->mtd.oobsize = subdev[0]->oobsize; concat->mtd.oobavail = subdev[0]->oobavail; - if (subdev[0]->read_oob) - concat->mtd.read_oob = concat_read_oob; - if (subdev[0]->write_oob) - concat->mtd.write_oob = concat_write_oob; - if (subdev[0]->block_isbad) - concat->mtd.block_isbad = concat_block_isbad; - if (subdev[0]->block_markbad) - concat->mtd.block_markbad = concat_block_markbad; + if (subdev[0]->_read_oob) + concat->mtd._read_oob = concat_read_oob; + if (subdev[0]->_write_oob) + concat->mtd._write_oob = concat_write_oob; + if (subdev[0]->_block_isbad) + concat->mtd._block_isbad = concat_block_isbad; + if (subdev[0]->_block_markbad) + concat->mtd._block_markbad = concat_block_markbad;

concat->mtd.ecc_stats.badblocks = subdev[0]->ecc_stats.badblocks;

@@ -653,8 +619,8 @@ struct mtd_info *mtd_concat_create(struct mtd_info *subdev[], /* subdevices to c if (concat->mtd.writesize != subdev[i]->writesize || concat->mtd.subpage_sft != subdev[i]->subpage_sft || concat->mtd.oobsize != subdev[i]->oobsize || - !concat->mtd.read_oob != !subdev[i]->read_oob || - !concat->mtd.write_oob != !subdev[i]->write_oob) { + !concat->mtd._read_oob != !subdev[i]->_read_oob || + !concat->mtd._write_oob != !subdev[i]->_write_oob) { kfree(concat); printk("Incompatible OOB or ECC data on "%s"\n", subdev[i]->name); @@ -669,12 +635,12 @@ struct mtd_info *mtd_concat_create(struct mtd_info *subdev[], /* subdevices to c concat->num_subdev = num_devs; concat->mtd.name = name;

- concat->mtd.erase = concat_erase; - concat->mtd.read = concat_read; - concat->mtd.write = concat_write; - concat->mtd.sync = concat_sync; - concat->mtd.lock = concat_lock; - concat->mtd.unlock = concat_unlock; + concat->mtd._erase = concat_erase; + concat->mtd._read = concat_read; + concat->mtd._write = concat_write; + concat->mtd._sync = concat_sync; + concat->mtd._lock = concat_lock; + concat->mtd._unlock = concat_unlock;

/* * Combine the erase block size info of the subdevices: diff --git a/drivers/mtd/mtdcore.c b/drivers/mtd/mtdcore.c index 3a81ada..49c0814 100644 --- a/drivers/mtd/mtdcore.c +++ b/drivers/mtd/mtdcore.c @@ -25,6 +25,11 @@ int add_mtd_device(struct mtd_info *mtd) mtd->index = i; mtd->usecount = 0;

+ /* default value if not set by driver */ + if (mtd->bitflip_threshold == 0) + mtd->bitflip_threshold = mtd->ecc_strength; + + /* No need to get a refcount on the module containing the notifier, since we hold the mtd_table_mutex */

@@ -186,3 +191,189 @@ void mtd_get_len_incl_bad(struct mtd_info *mtd, uint64_t offset, } } #endif /* defined(CONFIG_CMD_MTDPARTS_SPREAD) */ + + /* + * Erase is an asynchronous operation. Device drivers are supposed + * to call instr->callback() whenever the operation completes, even + * if it completes with a failure. + * Callers are supposed to pass a callback function and wait for it + * to be called before writing to the block. + */ +int mtd_erase(struct mtd_info *mtd, struct erase_info *instr) +{ + if (instr->addr > mtd->size || instr->len > mtd->size - instr->addr) + return -EINVAL; + if (!(mtd->flags & MTD_WRITEABLE)) + return -EROFS; + instr->fail_addr = MTD_FAIL_ADDR_UNKNOWN; + if (!instr->len) { + instr->state = MTD_ERASE_DONE; + mtd_erase_callback(instr); + return 0; + } + return mtd->_erase(mtd, instr); +} + +int mtd_read(struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, + u_char *buf) +{ + if (from < 0 || from > mtd->size || len > mtd->size - from) + return -EINVAL; + if (!len) + return 0; + return mtd->_read(mtd, from, len, retlen, buf); +} + +int mtd_write(struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen, + const u_char *buf) +{ + *retlen = 0; + if (to < 0 || to > mtd->size || len > mtd->size - to) + return -EINVAL; + if (!mtd->_write || !(mtd->flags & MTD_WRITEABLE)) + return -EROFS; + if (!len) + return 0; + return mtd->_write(mtd, to, len, retlen, buf); +} + +/* + * In blackbox flight recorder like scenarios we want to make successful writes + * in interrupt context. panic_write() is only intended to be called when its + * known the kernel is about to panic and we need the write to succeed. Since + * the kernel is not going to be running for much longer, this function can + * break locks and delay to ensure the write succeeds (but not sleep). + */ +int mtd_panic_write(struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen, + const u_char *buf) +{ + *retlen = 0; + if (!mtd->_panic_write) + return -EOPNOTSUPP; + if (to < 0 || to > mtd->size || len > mtd->size - to) + return -EINVAL; + if (!(mtd->flags & MTD_WRITEABLE)) + return -EROFS; + if (!len) + return 0; + return mtd->_panic_write(mtd, to, len, retlen, buf); +} + +int mtd_read_oob(struct mtd_info *mtd, loff_t from, struct mtd_oob_ops *ops) +{ + ops->retlen = ops->oobretlen = 0; + if (!mtd->_read_oob) + return -EOPNOTSUPP; + return mtd->_read_oob(mtd, from, ops); +} + +/* + * Method to access the protection register area, present in some flash + * devices. The user data is one time programmable but the factory data is read + * only. + */ +int mtd_get_fact_prot_info(struct mtd_info *mtd, struct otp_info *buf, + size_t len) +{ + if (!mtd->_get_fact_prot_info) + return -EOPNOTSUPP; + if (!len) + return 0; + return mtd->_get_fact_prot_info(mtd, buf, len); +} + +int mtd_read_fact_prot_reg(struct mtd_info *mtd, loff_t from, size_t len, + size_t *retlen, u_char *buf) +{ + *retlen = 0; + if (!mtd->_read_fact_prot_reg) + return -EOPNOTSUPP; + if (!len) + return 0; + return mtd->_read_fact_prot_reg(mtd, from, len, retlen, buf); +} + +int mtd_get_user_prot_info(struct mtd_info *mtd, struct otp_info *buf, + size_t len) +{ + if (!mtd->_get_user_prot_info) + return -EOPNOTSUPP; + if (!len) + return 0; + return mtd->_get_user_prot_info(mtd, buf, len); +} + +int mtd_read_user_prot_reg(struct mtd_info *mtd, loff_t from, size_t len, + size_t *retlen, u_char *buf) +{ + *retlen = 0; + if (!mtd->_read_user_prot_reg) + return -EOPNOTSUPP; + if (!len) + return 0; + return mtd->_read_user_prot_reg(mtd, from, len, retlen, buf); +} + +int mtd_write_user_prot_reg(struct mtd_info *mtd, loff_t to, size_t len, + size_t *retlen, u_char *buf) +{ + *retlen = 0; + if (!mtd->_write_user_prot_reg) + return -EOPNOTSUPP; + if (!len) + return 0; + return mtd->_write_user_prot_reg(mtd, to, len, retlen, buf); +} + +int mtd_lock_user_prot_reg(struct mtd_info *mtd, loff_t from, size_t len) +{ + if (!mtd->_lock_user_prot_reg) + return -EOPNOTSUPP; + if (!len) + return 0; + return mtd->_lock_user_prot_reg(mtd, from, len); +} + +/* Chip-supported device locking */ +int mtd_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len) +{ + if (!mtd->_lock) + return -EOPNOTSUPP; + if (ofs < 0 || ofs > mtd->size || len > mtd->size - ofs) + return -EINVAL; + if (!len) + return 0; + return mtd->_lock(mtd, ofs, len); +} + +int mtd_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len) +{ + if (!mtd->_unlock) + return -EOPNOTSUPP; + if (ofs < 0 || ofs > mtd->size || len > mtd->size - ofs) + return -EINVAL; + if (!len) + return 0; + return mtd->_unlock(mtd, ofs, len); +} + +int mtd_block_isbad(struct mtd_info *mtd, loff_t ofs) +{ + if (!mtd->_block_isbad) + return 0; + if (ofs < 0 || ofs > mtd->size) + return -EINVAL; + return mtd->_block_isbad(mtd, ofs); +} + +int mtd_block_markbad(struct mtd_info *mtd, loff_t ofs) +{ + if (!mtd->_block_markbad) + return -EOPNOTSUPP; + if (ofs < 0 || ofs > mtd->size) + return -EINVAL; + if (!(mtd->flags & MTD_WRITEABLE)) + return -EROFS; + return mtd->_block_markbad(mtd, ofs); +} + diff --git a/drivers/mtd/mtdpart.c b/drivers/mtd/mtdpart.c index 96dcda2..74d54ab 100644 --- a/drivers/mtd/mtdpart.c +++ b/drivers/mtd/mtdpart.c @@ -52,17 +52,11 @@ static int part_read(struct mtd_info *mtd, loff_t from, size_t len, int res;

stats = part->master->ecc_stats; - - if (from >= mtd->size) - len = 0; - else if (from + len > mtd->size) - len = mtd->size - from; - res = part->master->read(part->master, from + part->offset, - len, retlen, buf); + res = mtd_read(part->master, from + part->offset, len, retlen, buf); if (unlikely(res)) { - if (res == -EUCLEAN) + if (mtd_is_bitflip(res)) mtd->ecc_stats.corrected += part->master->ecc_stats.corrected - stats.corrected; - if (res == -EBADMSG) + if (mtd_is_eccerr(res)) mtd->ecc_stats.failed += part->master->ecc_stats.failed - stats.failed; } return res; @@ -78,12 +72,12 @@ static int part_read_oob(struct mtd_info *mtd, loff_t from, return -EINVAL; if (ops->datbuf && from + ops->len > mtd->size) return -EINVAL; - res = part->master->read_oob(part->master, from + part->offset, ops); + res = mtd_read_oob(part->master, from + part->offset, ops);

if (unlikely(res)) { - if (res == -EUCLEAN) + if (mtd_is_bitflip(res)) mtd->ecc_stats.corrected++; - if (res == -EBADMSG) + if (mtd_is_eccerr(res)) mtd->ecc_stats.failed++; } return res; @@ -93,58 +87,35 @@ static int part_read_user_prot_reg(struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf) { struct mtd_part *part = PART(mtd); - return part->master->read_user_prot_reg(part->master, from, - len, retlen, buf); + return mtd_read_user_prot_reg(part->master, from, len, retlen, buf); }

static int part_get_user_prot_info(struct mtd_info *mtd, struct otp_info *buf, size_t len) { struct mtd_part *part = PART(mtd); - return part->master->get_user_prot_info(part->master, buf, len); + return mtd_get_user_prot_info(part->master, buf, len); }

static int part_read_fact_prot_reg(struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf) { struct mtd_part *part = PART(mtd); - return part->master->read_fact_prot_reg(part->master, from, - len, retlen, buf); + return mtd_read_fact_prot_reg(part->master, from, len, retlen, buf); }

static int part_get_fact_prot_info(struct mtd_info *mtd, struct otp_info *buf, size_t len) { struct mtd_part *part = PART(mtd); - return part->master->get_fact_prot_info(part->master, buf, len); + return mtd_get_fact_prot_info(part->master, buf, len); }

static int part_write(struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen, const u_char *buf) { struct mtd_part *part = PART(mtd); - if (!(mtd->flags & MTD_WRITEABLE)) - return -EROFS; - if (to >= mtd->size) - len = 0; - else if (to + len > mtd->size) - len = mtd->size - to; - return part->master->write(part->master, to + part->offset, - len, retlen, buf); -} - -static int part_panic_write(struct mtd_info *mtd, loff_t to, size_t len, - size_t *retlen, const u_char *buf) -{ - struct mtd_part *part = PART(mtd); - if (!(mtd->flags & MTD_WRITEABLE)) - return -EROFS; - if (to >= mtd->size) - len = 0; - else if (to + len > mtd->size) - len = mtd->size - to; - return part->master->panic_write(part->master, to + part->offset, - len, retlen, buf); + return mtd_write(part->master, to + part->offset, len, retlen, buf); }

static int part_write_oob(struct mtd_info *mtd, loff_t to, @@ -152,41 +123,34 @@ static int part_write_oob(struct mtd_info *mtd, loff_t to, { struct mtd_part *part = PART(mtd);

- if (!(mtd->flags & MTD_WRITEABLE)) - return -EROFS; - if (to >= mtd->size) return -EINVAL; if (ops->datbuf && to + ops->len > mtd->size) return -EINVAL; - return part->master->write_oob(part->master, to + part->offset, ops); + return mtd_write_oob(part->master, to + part->offset, ops); }

static int part_write_user_prot_reg(struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf) { struct mtd_part *part = PART(mtd); - return part->master->write_user_prot_reg(part->master, from, - len, retlen, buf); + return mtd_write_user_prot_reg(part->master, from, len, retlen, buf); }

static int part_lock_user_prot_reg(struct mtd_info *mtd, loff_t from, size_t len) { struct mtd_part *part = PART(mtd); - return part->master->lock_user_prot_reg(part->master, from, len); + return mtd_lock_user_prot_reg(part->master, from, len); }

static int part_erase(struct mtd_info *mtd, struct erase_info *instr) { struct mtd_part *part = PART(mtd); int ret; - if (!(mtd->flags & MTD_WRITEABLE)) - return -EROFS; - if (instr->addr >= mtd->size) - return -EINVAL; + instr->addr += part->offset; - ret = part->master->erase(part->master, instr); + ret = mtd_erase(part->master, instr); if (ret) { if (instr->fail_addr != MTD_FAIL_ADDR_UNKNOWN) instr->fail_addr -= part->offset; @@ -197,7 +161,7 @@ static int part_erase(struct mtd_info *mtd, struct erase_info *instr)

void mtd_erase_callback(struct erase_info *instr) { - if (instr->mtd->erase == part_erase) { + if (instr->mtd->_erase == part_erase) { struct mtd_part *part = PART(instr->mtd);

if (instr->fail_addr != MTD_FAIL_ADDR_UNKNOWN) @@ -211,32 +175,26 @@ void mtd_erase_callback(struct erase_info *instr) static int part_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len) { struct mtd_part *part = PART(mtd); - if ((len + ofs) > mtd->size) - return -EINVAL; - return part->master->lock(part->master, ofs + part->offset, len); + return mtd_lock(part->master, ofs + part->offset, len); }

static int part_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len) { struct mtd_part *part = PART(mtd); - if ((len + ofs) > mtd->size) - return -EINVAL; - return part->master->unlock(part->master, ofs + part->offset, len); + return mtd_unlock(part->master, ofs + part->offset, len); }

static void part_sync(struct mtd_info *mtd) { struct mtd_part *part = PART(mtd); - part->master->sync(part->master); + mtd_sync(part->master); }

static int part_block_isbad(struct mtd_info *mtd, loff_t ofs) { struct mtd_part *part = PART(mtd); - if (ofs >= mtd->size) - return -EINVAL; ofs += part->offset; - return part->master->block_isbad(part->master, ofs); + return mtd_block_isbad(part->master, ofs); }

static int part_block_markbad(struct mtd_info *mtd, loff_t ofs) @@ -244,12 +202,8 @@ static int part_block_markbad(struct mtd_info *mtd, loff_t ofs) struct mtd_part *part = PART(mtd); int res;

- if (!(mtd->flags & MTD_WRITEABLE)) - return -EROFS; - if (ofs >= mtd->size) - return -EINVAL; ofs += part->offset; - res = part->master->block_markbad(part->master, ofs); + res = mtd_block_markbad(part->master, ofs); if (!res) mtd->ecc_stats.badblocks++; return res; @@ -303,39 +257,36 @@ static struct mtd_part *add_one_partition(struct mtd_info *master, slave->mtd.name = part->name; slave->mtd.owner = master->owner;

- slave->mtd.read = part_read; - slave->mtd.write = part_write; - - if (master->panic_write) - slave->mtd.panic_write = part_panic_write; - - if (master->read_oob) - slave->mtd.read_oob = part_read_oob; - if (master->write_oob) - slave->mtd.write_oob = part_write_oob; - if (master->read_user_prot_reg) - slave->mtd.read_user_prot_reg = part_read_user_prot_reg; - if (master->read_fact_prot_reg) - slave->mtd.read_fact_prot_reg = part_read_fact_prot_reg; - if (master->write_user_prot_reg) - slave->mtd.write_user_prot_reg = part_write_user_prot_reg; - if (master->lock_user_prot_reg) - slave->mtd.lock_user_prot_reg = part_lock_user_prot_reg; - if (master->get_user_prot_info) - slave->mtd.get_user_prot_info = part_get_user_prot_info; - if (master->get_fact_prot_info) - slave->mtd.get_fact_prot_info = part_get_fact_prot_info; - if (master->sync) - slave->mtd.sync = part_sync; - if (master->lock) - slave->mtd.lock = part_lock; - if (master->unlock) - slave->mtd.unlock = part_unlock; - if (master->block_isbad) - slave->mtd.block_isbad = part_block_isbad; - if (master->block_markbad) - slave->mtd.block_markbad = part_block_markbad; - slave->mtd.erase = part_erase; + slave->mtd._read = part_read; + slave->mtd._write = part_write; + + if (master->_read_oob) + slave->mtd._read_oob = part_read_oob; + if (master->_write_oob) + slave->mtd._write_oob = part_write_oob; + if (master->_read_user_prot_reg) + slave->mtd._read_user_prot_reg = part_read_user_prot_reg; + if (master->_read_fact_prot_reg) + slave->mtd._read_fact_prot_reg = part_read_fact_prot_reg; + if (master->_write_user_prot_reg) + slave->mtd._write_user_prot_reg = part_write_user_prot_reg; + if (master->_lock_user_prot_reg) + slave->mtd._lock_user_prot_reg = part_lock_user_prot_reg; + if (master->_get_user_prot_info) + slave->mtd._get_user_prot_info = part_get_user_prot_info; + if (master->_get_fact_prot_info) + slave->mtd._get_fact_prot_info = part_get_fact_prot_info; + if (master->_sync) + slave->mtd._sync = part_sync; + if (master->_lock) + slave->mtd._lock = part_lock; + if (master->_unlock) + slave->mtd._unlock = part_unlock; + if (master->_block_isbad) + slave->mtd._block_isbad = part_block_isbad; + if (master->_block_markbad) + slave->mtd._block_markbad = part_block_markbad; + slave->mtd._erase = part_erase; slave->master = master; slave->offset = part->offset; slave->index = partno; @@ -414,12 +365,11 @@ static struct mtd_part *add_one_partition(struct mtd_info *master, }

slave->mtd.ecclayout = master->ecclayout; - if (master->block_isbad) { + if (master->_block_isbad) { uint64_t offs = 0;

while (offs < slave->mtd.size) { - if (master->block_isbad(master, - offs + slave->offset)) + if (mtd_block_isbad(master, offs + slave->offset)) slave->mtd.ecc_stats.badblocks++; offs += slave->mtd.erasesize; } diff --git a/drivers/mtd/nand/atmel_nand.c b/drivers/mtd/nand/atmel_nand.c index 994dd9f..b09e7b7 100644 --- a/drivers/mtd/nand/atmel_nand.c +++ b/drivers/mtd/nand/atmel_nand.c @@ -489,7 +489,7 @@ normal_check: }

static int atmel_nand_pmecc_read_page(struct mtd_info *mtd, - struct nand_chip *chip, uint8_t *buf, int page) + struct nand_chip *chip, uint8_t *buf, int oob_required, int page) { struct atmel_nand_host *host = chip->priv; int eccsize = chip->ecc.size; @@ -529,8 +529,9 @@ static int atmel_nand_pmecc_read_page(struct mtd_info *mtd, return 0; }

-static void atmel_nand_pmecc_write_page(struct mtd_info *mtd, - struct nand_chip *chip, const uint8_t *buf) +static int atmel_nand_pmecc_write_page(struct mtd_info *mtd, + struct nand_chip *chip, const uint8_t *buf, + int oob_required) { struct atmel_nand_host *host = chip->priv; uint32_t *eccpos = chip->ecc.layout->eccpos; @@ -557,7 +558,7 @@ static void atmel_nand_pmecc_write_page(struct mtd_info *mtd,

if (!timeout) { printk(KERN_ERR "atmel_nand : Timeout to read PMECC status, fail to write PMECC in oob\n"); - return; + goto out; }

for (i = 0; i < host->pmecc_sector_number; i++) { @@ -570,6 +571,8 @@ static void atmel_nand_pmecc_write_page(struct mtd_info *mtd, } } chip->write_buf(mtd, chip->oob_poi, mtd->oobsize); +out: + return 0; }

static void atmel_pmecc_core_init(struct mtd_info *mtd) @@ -775,9 +778,10 @@ static int atmel_nand_calculate(struct mtd_info *mtd, * mtd: mtd info structure * chip: nand chip info structure * buf: buffer to store read data + * oob_required: caller expects OOB data read to chip->oob_poi */ -static int atmel_nand_read_page(struct mtd_info *mtd, - struct nand_chip *chip, uint8_t *buf, int page) +static int atmel_nand_read_page(struct mtd_info *mtd, struct nand_chip *chip, + uint8_t *buf, int oob_required, int page) { int eccsize = chip->ecc.size; int eccbytes = chip->ecc.bytes; diff --git a/drivers/mtd/nand/davinci_nand.c b/drivers/mtd/nand/davinci_nand.c index e8506dd..04b24f3 100644 --- a/drivers/mtd/nand/davinci_nand.c +++ b/drivers/mtd/nand/davinci_nand.c @@ -607,7 +607,7 @@ void davinci_nand_init(struct nand_chip *nand) { nand->chip_delay = 0; #ifdef CONFIG_SYS_NAND_USE_FLASH_BBT - nand->options |= NAND_USE_FLASH_BBT; + nand->bbt_options |= NAND_BBT_USE_FLASH; #endif #ifdef CONFIG_SYS_NAND_HW_ECC nand->ecc.mode = NAND_ECC_HW; diff --git a/drivers/mtd/nand/diskonchip.c b/drivers/mtd/nand/diskonchip.c index edf3a09..104d97f 100644 --- a/drivers/mtd/nand/diskonchip.c +++ b/drivers/mtd/nand/diskonchip.c @@ -134,7 +134,7 @@ static struct rs_control *rs_decoder;

/* * The HW decoder in the DoC ASIC's provides us a error syndrome, - * which we must convert to a standard syndrom usable by the generic + * which we must convert to a standard syndrome usable by the generic * Reed-Solomon library code. * * Fabrice Bellard figured this out in the old docecc code. I added @@ -154,7 +154,7 @@ static int doc_ecc_decode(struct rs_control *rs, uint8_t *data, uint8_t *ecc) ds[3] = ((ecc[3] & 0xc0) >> 6) | ((ecc[0] & 0xff) << 2); parity = ecc[1];

- /* Initialize the syndrom buffer */ + /* Initialize the syndrome buffer */ for (i = 0; i < NROOTS; i++) s[i] = ds[0]; /* @@ -1033,7 +1033,7 @@ static int doc200x_correct_data(struct mtd_info *mtd, u_char *dat, WriteDOC(DOC_ECC_DIS, docptr, Mplus_ECCConf); else WriteDOC(DOC_ECC_DIS, docptr, ECCConf); - if (no_ecc_failures && (ret == -EBADMSG)) { + if (no_ecc_failures && mtd_is_eccerr(ret)) { printk(KERN_ERR "suppressing ECC failure\n"); ret = 0; } @@ -1073,7 +1073,7 @@ static int __init find_media_headers(struct mtd_info *mtd, u_char *buf, const ch size_t retlen;

for (offs = 0; offs < mtd->size; offs += mtd->erasesize) { - ret = mtd->read(mtd, offs, mtd->writesize, &retlen, buf); + ret = mtd_read(mtd, offs, mtd->writesize, &retlen, buf); if (retlen != mtd->writesize) continue; if (ret) { @@ -1098,7 +1098,7 @@ static int __init find_media_headers(struct mtd_info *mtd, u_char *buf, const ch /* Only one mediaheader was found. We want buf to contain a mediaheader on return, so we'll have to re-read the one we found. */ offs = doc->mh0_page << this->page_shift; - ret = mtd->read(mtd, offs, mtd->writesize, &retlen, buf); + ret = mtd_read(mtd, offs, mtd->writesize, &retlen, buf); if (retlen != mtd->writesize) { /* Insanity. Give up. */ printk(KERN_ERR "Read DiskOnChip Media Header once, but can't reread it???\n"); @@ -1658,7 +1658,7 @@ static int __init doc_probe(unsigned long physadr) nand->ecc.mode = NAND_ECC_HW_SYNDROME; nand->ecc.size = 512; nand->ecc.bytes = 6; - nand->options = NAND_USE_FLASH_BBT; + nand->bbt_options = NAND_BBT_USE_FLASH;

doc->physadr = physadr; doc->virtadr = virtadr; diff --git a/drivers/mtd/nand/fsl_elbc_nand.c b/drivers/mtd/nand/fsl_elbc_nand.c index 834a8a6..65edbf5 100644 --- a/drivers/mtd/nand/fsl_elbc_nand.c +++ b/drivers/mtd/nand/fsl_elbc_nand.c @@ -640,9 +640,8 @@ static int fsl_elbc_wait(struct mtd_info *mtd, struct nand_chip *chip) return fsl_elbc_read_byte(mtd); }

-static int fsl_elbc_read_page(struct mtd_info *mtd, - struct nand_chip *chip, - uint8_t *buf, int page) +static int fsl_elbc_read_page(struct mtd_info *mtd, struct nand_chip *chip, + uint8_t *buf, int oob_required, int page) { fsl_elbc_read_buf(mtd, buf, mtd->writesize); fsl_elbc_read_buf(mtd, chip->oob_poi, mtd->oobsize); @@ -656,12 +655,13 @@ static int fsl_elbc_read_page(struct mtd_info *mtd, /* ECC will be calculated automatically, and errors will be detected in * waitfunc. */ -static void fsl_elbc_write_page(struct mtd_info *mtd, - struct nand_chip *chip, - const uint8_t *buf) +static int fsl_elbc_write_page(struct mtd_info *mtd, struct nand_chip *chip, + const uint8_t *buf, int oob_required) { fsl_elbc_write_buf(mtd, buf, mtd->writesize); fsl_elbc_write_buf(mtd, chip->oob_poi, mtd->oobsize); + + return 0; }

static struct fsl_elbc_ctrl *elbc_ctrl; @@ -747,8 +747,8 @@ static int fsl_elbc_chip_init(int devnum, u8 *addr) nand->bbt_md = &bbt_mirror_descr;

/* set up nand options */ - nand->options = NAND_NO_READRDY | NAND_NO_AUTOINCR | - NAND_USE_FLASH_BBT | NAND_NO_SUBPAGE_WRITE; + nand->options = NAND_NO_SUBPAGE_WRITE; + nand->bbt_options = NAND_BBT_USE_FLASH;

nand->controller = &elbc_ctrl->controller; nand->priv = priv; diff --git a/drivers/mtd/nand/fsl_ifc_nand.c b/drivers/mtd/nand/fsl_ifc_nand.c index b13d8a9..5d47b40 100644 --- a/drivers/mtd/nand/fsl_ifc_nand.c +++ b/drivers/mtd/nand/fsl_ifc_nand.c @@ -686,9 +686,8 @@ static int fsl_ifc_wait(struct mtd_info *mtd, struct nand_chip *chip) return nand_fsr; }

-static int fsl_ifc_read_page(struct mtd_info *mtd, - struct nand_chip *chip, - uint8_t *buf, int page) +static int fsl_ifc_read_page(struct mtd_info *mtd, struct nand_chip *chip, + uint8_t *buf, int oob_required, int page) { struct fsl_ifc_mtd *priv = chip->priv; struct fsl_ifc_ctrl *ctrl = priv->ctrl; @@ -705,12 +704,13 @@ static int fsl_ifc_read_page(struct mtd_info *mtd, /* ECC will be calculated automatically, and errors will be detected in * waitfunc. */ -static void fsl_ifc_write_page(struct mtd_info *mtd, - struct nand_chip *chip, - const uint8_t *buf) +static int fsl_ifc_write_page(struct mtd_info *mtd, struct nand_chip *chip, + const uint8_t *buf, int oob_required) { fsl_ifc_write_buf(mtd, buf, mtd->writesize); fsl_ifc_write_buf(mtd, chip->oob_poi, mtd->oobsize); + + return 0; }

static void fsl_ifc_ctrl_init(void) @@ -852,8 +852,8 @@ int board_nand_init(struct nand_chip *nand) nand->bbt_md = &bbt_mirror_descr;

/* set up nand options */ - nand->options = NAND_NO_READRDY | NAND_NO_AUTOINCR | - NAND_USE_FLASH_BBT | NAND_NO_SUBPAGE_WRITE; + nand->options = NAND_NO_SUBPAGE_WRITE; + nand->bbt_options = NAND_BBT_USE_FLASH;

if (cspr & CSPR_PORT_SIZE_16) { nand->read_byte = fsl_ifc_read_byte16; diff --git a/drivers/mtd/nand/fsmc_nand.c b/drivers/mtd/nand/fsmc_nand.c index 7a61d88..48ca543 100644 --- a/drivers/mtd/nand/fsmc_nand.c +++ b/drivers/mtd/nand/fsmc_nand.c @@ -341,6 +341,7 @@ void fsmc_enable_hwecc(struct mtd_info *mtd, int mode) * @mtd: mtd info structure * @chip: nand chip info structure * @buf: buffer to store read data + * @oob_required: caller expects OOB data read to chip->oob_poi * @page: page number to read * * This routine is needed for fsmc verison 8 as reading from NAND chip has to be @@ -350,7 +351,7 @@ void fsmc_enable_hwecc(struct mtd_info *mtd, int mode) * max of 8 bits) */ static int fsmc_read_page_hwecc(struct mtd_info *mtd, struct nand_chip *chip, - uint8_t *buf, int page) + uint8_t *buf, int oob_required, int page) { struct fsmc_eccplace *fsmc_eccpl; int i, j, s, stat, eccsize = chip->ecc.size; diff --git a/drivers/mtd/nand/mpc5121_nfc.c b/drivers/mtd/nand/mpc5121_nfc.c index e6b7a70..e53f341 100644 --- a/drivers/mtd/nand/mpc5121_nfc.c +++ b/drivers/mtd/nand/mpc5121_nfc.c @@ -621,7 +621,7 @@ int board_nand_init(struct nand_chip *chip) chip->write_buf = mpc5121_nfc_write_buf; chip->verify_buf = mpc5121_nfc_verify_buf; chip->select_chip = mpc5121_nfc_select_chip; - chip->options = NAND_NO_AUTOINCR | NAND_USE_FLASH_BBT; + chip->bbt_options = NAND_BBT_USE_FLASH; chip->ecc.mode = NAND_ECC_SOFT;

/* Reset NAND Flash controller */ diff --git a/drivers/mtd/nand/mxc_nand.c b/drivers/mtd/nand/mxc_nand.c index d0ded48..c51a012 100644 --- a/drivers/mtd/nand/mxc_nand.c +++ b/drivers/mtd/nand/mxc_nand.c @@ -380,7 +380,7 @@ static void mxc_nand_enable_hwecc(struct mtd_info *mtd, int mode) #ifdef MXC_NFC_V2_1 static int mxc_nand_read_oob_syndrome(struct mtd_info *mtd, struct nand_chip *chip, - int page, int sndcmd) + int page) { struct mxc_nand_host *host = chip->priv; uint8_t *buf = chip->oob_poi; @@ -434,6 +434,7 @@ static int mxc_nand_read_oob_syndrome(struct mtd_info *mtd, static int mxc_nand_read_page_raw_syndrome(struct mtd_info *mtd, struct nand_chip *chip, uint8_t *buf, + int oob_required, int page) { struct mxc_nand_host *host = chip->priv; @@ -478,6 +479,7 @@ static int mxc_nand_read_page_raw_syndrome(struct mtd_info *mtd, static int mxc_nand_read_page_syndrome(struct mtd_info *mtd, struct nand_chip *chip, uint8_t *buf, + int oob_required, int page) { struct mxc_nand_host *host = chip->priv; @@ -567,9 +569,10 @@ static int mxc_nand_write_oob_syndrome(struct mtd_info *mtd, return status & NAND_STATUS_FAIL ? -EIO : 0; }

-static void mxc_nand_write_page_raw_syndrome(struct mtd_info *mtd, +static int mxc_nand_write_page_raw_syndrome(struct mtd_info *mtd, struct nand_chip *chip, - const uint8_t *buf) + const uint8_t *buf, + int oob_required) { struct mxc_nand_host *host = chip->priv; int eccsize = chip->ecc.size; @@ -603,11 +606,13 @@ static void mxc_nand_write_page_raw_syndrome(struct mtd_info *mtd, size = mtd->oobsize - (oob - chip->oob_poi); if (size) chip->write_buf(mtd, oob, size); + return 0; }

-static void mxc_nand_write_page_syndrome(struct mtd_info *mtd, +static int mxc_nand_write_page_syndrome(struct mtd_info *mtd, struct nand_chip *chip, - const uint8_t *buf) + const uint8_t *buf, + int oob_required) { struct mxc_nand_host *host = chip->priv; int i, n, eccsize = chip->ecc.size; @@ -646,6 +651,7 @@ static void mxc_nand_write_page_syndrome(struct mtd_info *mtd, i = mtd->oobsize - (oob - chip->oob_poi); if (i) chip->write_buf(mtd, oob, i); + return 0; }

static int mxc_nand_correct_data(struct mtd_info *mtd, u_char *dat, @@ -1172,7 +1178,7 @@ int board_nand_init(struct nand_chip *this) #endif

#ifdef CONFIG_SYS_NAND_USE_FLASH_BBT - this->options |= NAND_USE_FLASH_BBT; + this->bbt_options |= NAND_BBT_USE_FLASH; this->bbt_td = &bbt_main_descr; this->bbt_md = &bbt_mirror_descr; #endif diff --git a/drivers/mtd/nand/mxs_nand.c b/drivers/mtd/nand/mxs_nand.c index e38e151..422519a 100644 --- a/drivers/mtd/nand/mxs_nand.c +++ b/drivers/mtd/nand/mxs_nand.c @@ -546,7 +546,8 @@ static uint8_t mxs_nand_read_byte(struct mtd_info *mtd) * Read a page from NAND. */ static int mxs_nand_ecc_read_page(struct mtd_info *mtd, struct nand_chip *nand, - uint8_t *buf, int page) + uint8_t *buf, int oob_required, + int page) { struct mxs_nand_info *nand_info = nand->priv; struct mxs_dma_desc *d; @@ -691,8 +692,9 @@ rtn: /* * Write a page to NAND. */ -static void mxs_nand_ecc_write_page(struct mtd_info *mtd, - struct nand_chip *nand, const uint8_t *buf) +static int mxs_nand_ecc_write_page(struct mtd_info *mtd, + struct nand_chip *nand, const uint8_t *buf, + int oob_required) { struct mxs_nand_info *nand_info = nand->priv; struct mxs_dma_desc *d; @@ -748,6 +750,7 @@ static void mxs_nand_ecc_write_page(struct mtd_info *mtd,

rtn: mxs_nand_return_dma_descs(nand_info); + return 0; }

/* @@ -763,7 +766,7 @@ static int mxs_nand_hook_read_oob(struct mtd_info *mtd, loff_t from, struct mxs_nand_info *nand_info = chip->priv; int ret;

- if (ops->mode == MTD_OOB_RAW) + if (ops->mode == MTD_OPS_RAW) nand_info->raw_oob_mode = 1; else nand_info->raw_oob_mode = 0; @@ -788,7 +791,7 @@ static int mxs_nand_hook_write_oob(struct mtd_info *mtd, loff_t to, struct mxs_nand_info *nand_info = chip->priv; int ret;

- if (ops->mode == MTD_OOB_RAW) + if (ops->mode == MTD_OPS_RAW) nand_info->raw_oob_mode = 1; else nand_info->raw_oob_mode = 0; @@ -997,19 +1000,19 @@ static int mxs_nand_scan_bbt(struct mtd_info *mtd) writel(BCH_CTRL_COMPLETE_IRQ_EN, &bch_regs->hw_bch_ctrl_set);

/* Hook some operations at the MTD level. */ - if (mtd->read_oob != mxs_nand_hook_read_oob) { - nand_info->hooked_read_oob = mtd->read_oob; - mtd->read_oob = mxs_nand_hook_read_oob; + if (mtd->_read_oob != mxs_nand_hook_read_oob) { + nand_info->hooked_read_oob = mtd->_read_oob; + mtd->_read_oob = mxs_nand_hook_read_oob; }

- if (mtd->write_oob != mxs_nand_hook_write_oob) { - nand_info->hooked_write_oob = mtd->write_oob; - mtd->write_oob = mxs_nand_hook_write_oob; + if (mtd->_write_oob != mxs_nand_hook_write_oob) { + nand_info->hooked_write_oob = mtd->_write_oob; + mtd->_write_oob = mxs_nand_hook_write_oob; }

- if (mtd->block_markbad != mxs_nand_hook_block_markbad) { - nand_info->hooked_block_markbad = mtd->block_markbad; - mtd->block_markbad = mxs_nand_hook_block_markbad; + if (mtd->_block_markbad != mxs_nand_hook_block_markbad) { + nand_info->hooked_block_markbad = mtd->_block_markbad; + mtd->_block_markbad = mxs_nand_hook_block_markbad; }

/* We use the reference implementation for bad block management. */ diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index a2d06be..3ad7783 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -21,7 +21,7 @@ * TODO: * Enable cached programming for 2k page size chips * Check, if mtd->ecctype should be set to MTD_ECC_HW - * if we have HW ecc support. + * if we have HW ECC support. * The AG-AND chips have nice features for speed improvement, * which are not supported yet. Read / program 4 pages in one go. * BBT table is not serialized, has to be fixed @@ -134,21 +134,14 @@ static int check_offs_len(struct mtd_info *mtd, ret = -EINVAL; }

- /* Do not allow past end of device */ - if (ofs + len > mtd->size) { - MTDDEBUG(MTD_DEBUG_LEVEL0, "%s: Past end of device\n", - __func__); - ret = -EINVAL; - } - return ret; }

/** * nand_release_device - [GENERIC] release chip - * @mtd: MTD device structure + * @mtd: MTD device structure * - * Deselect, release chip lock and wake up anyone waiting on the device + * Deselect, release chip lock and wake up anyone waiting on the device. */ static void nand_release_device(struct mtd_info *mtd) { @@ -160,9 +153,9 @@ static void nand_release_device(struct mtd_info *mtd)

/** * nand_read_byte - [DEFAULT] read one byte from the chip - * @mtd: MTD device structure + * @mtd: MTD device structure * - * Default read function for 8bit buswith + * Default read function for 8bit buswidth. */ uint8_t nand_read_byte(struct mtd_info *mtd) { @@ -172,10 +165,11 @@ uint8_t nand_read_byte(struct mtd_info *mtd)

/** * nand_read_byte16 - [DEFAULT] read one byte endianess aware from the chip - * @mtd: MTD device structure + * nand_read_byte16 - [DEFAULT] read one byte endianness aware from the chip + * @mtd: MTD device structure + * + * Default read function for 16bit buswidth with endianness conversion. * - * Default read function for 16bit buswith with - * endianess conversion */ static uint8_t nand_read_byte16(struct mtd_info *mtd) { @@ -185,10 +179,9 @@ static uint8_t nand_read_byte16(struct mtd_info *mtd)

/** * nand_read_word - [DEFAULT] read one word from the chip - * @mtd: MTD device structure + * @mtd: MTD device structure * - * Default read function for 16bit buswith without - * endianess conversion + * Default read function for 16bit buswidth without endianness conversion. */ static u16 nand_read_word(struct mtd_info *mtd) { @@ -198,8 +191,8 @@ static u16 nand_read_word(struct mtd_info *mtd)

/** * nand_select_chip - [DEFAULT] control CE line - * @mtd: MTD device structure - * @chipnr: chipnumber to select, -1 for deselect + * @mtd: MTD device structure + * @chipnr: chipnumber to select, -1 for deselect * * Default select function for 1 chip devices. */ @@ -221,11 +214,11 @@ static void nand_select_chip(struct mtd_info *mtd, int chipnr)

/** * nand_write_buf - [DEFAULT] write buffer to chip - * @mtd: MTD device structure - * @buf: data buffer - * @len: number of bytes to write + * @mtd: MTD device structure + * @buf: data buffer + * @len: number of bytes to write * - * Default write function for 8bit buswith + * Default write function for 8bit buswidth. */ void nand_write_buf(struct mtd_info *mtd, const uint8_t *buf, int len) { @@ -238,11 +231,11 @@ void nand_write_buf(struct mtd_info *mtd, const uint8_t *buf, int len)

/** * nand_read_buf - [DEFAULT] read chip data into buffer - * @mtd: MTD device structure - * @buf: buffer to store date - * @len: number of bytes to read + * @mtd: MTD device structure + * @buf: buffer to store date + * @len: number of bytes to read * - * Default read function for 8bit buswith + * Default read function for 8bit buswidth. */ void nand_read_buf(struct mtd_info *mtd, uint8_t *buf, int len) { @@ -255,11 +248,11 @@ void nand_read_buf(struct mtd_info *mtd, uint8_t *buf, int len)

/** * nand_verify_buf - [DEFAULT] Verify chip data against buffer - * @mtd: MTD device structure - * @buf: buffer containing the data to compare - * @len: number of bytes to compare + * @mtd: MTD device structure + * @buf: buffer containing the data to compare + * @len: number of bytes to compare * - * Default verify function for 8bit buswith + * Default verify function for 8bit buswidth. */ static int nand_verify_buf(struct mtd_info *mtd, const uint8_t *buf, int len) { @@ -274,11 +267,11 @@ static int nand_verify_buf(struct mtd_info *mtd, const uint8_t *buf, int len)

/** * nand_write_buf16 - [DEFAULT] write buffer to chip - * @mtd: MTD device structure - * @buf: data buffer - * @len: number of bytes to write + * @mtd: MTD device structure + * @buf: data buffer + * @len: number of bytes to write * - * Default write function for 16bit buswith + * Default write function for 16bit buswidth. */ void nand_write_buf16(struct mtd_info *mtd, const uint8_t *buf, int len) { @@ -294,11 +287,11 @@ void nand_write_buf16(struct mtd_info *mtd, const uint8_t *buf, int len)

/** * nand_read_buf16 - [DEFAULT] read chip data into buffer - * @mtd: MTD device structure - * @buf: buffer to store date - * @len: number of bytes to read + * @mtd: MTD device structure + * @buf: buffer to store date + * @len: number of bytes to read * - * Default read function for 16bit buswith + * Default read function for 16bit buswidth. */ void nand_read_buf16(struct mtd_info *mtd, uint8_t *buf, int len) { @@ -313,11 +306,11 @@ void nand_read_buf16(struct mtd_info *mtd, uint8_t *buf, int len)

/** * nand_verify_buf16 - [DEFAULT] Verify chip data against buffer - * @mtd: MTD device structure - * @buf: buffer containing the data to compare - * @len: number of bytes to compare + * @mtd: MTD device structure + * @buf: buffer containing the data to compare + * @len: number of bytes to compare * - * Default verify function for 16bit buswith + * Default verify function for 16bit buswidth. */ static int nand_verify_buf16(struct mtd_info *mtd, const uint8_t *buf, int len) { @@ -335,19 +328,19 @@ static int nand_verify_buf16(struct mtd_info *mtd, const uint8_t *buf, int len)

/** * nand_block_bad - [DEFAULT] Read bad block marker from the chip - * @mtd: MTD device structure - * @ofs: offset from device start - * @getchip: 0, if the chip is already selected + * @mtd: MTD device structure + * @ofs: offset from device start + * @getchip: 0, if the chip is already selected * * Check, if the block is bad. */ static int nand_block_bad(struct mtd_info *mtd, loff_t ofs, int getchip) { - int page, chipnr, res = 0; + int page, chipnr, res = 0, i = 0; struct nand_chip *chip = mtd->priv; u16 bad;

- if (chip->options & NAND_BBT_SCANLASTPAGE) + if (chip->bbt_options & NAND_BBT_SCANLASTPAGE) ofs += mtd->erasesize - mtd->writesize;

page = (int)(ofs >> chip->page_shift) & chip->pagemask; @@ -361,23 +354,29 @@ static int nand_block_bad(struct mtd_info *mtd, loff_t ofs, int getchip) chip->select_chip(mtd, chipnr); }

- if (chip->options & NAND_BUSWIDTH_16) { - chip->cmdfunc(mtd, NAND_CMD_READOOB, chip->badblockpos & 0xFE, - page); - bad = cpu_to_le16(chip->read_word(mtd)); - if (chip->badblockpos & 0x1) - bad >>= 8; - else - bad &= 0xFF; - } else { - chip->cmdfunc(mtd, NAND_CMD_READOOB, chip->badblockpos, page); - bad = chip->read_byte(mtd); - } + do { + if (chip->options & NAND_BUSWIDTH_16) { + chip->cmdfunc(mtd, NAND_CMD_READOOB, + chip->badblockpos & 0xFE, page); + bad = cpu_to_le16(chip->read_word(mtd)); + if (chip->badblockpos & 0x1) + bad >>= 8; + else + bad &= 0xFF; + } else { + chip->cmdfunc(mtd, NAND_CMD_READOOB, chip->badblockpos, + page); + bad = chip->read_byte(mtd); + }

- if (likely(chip->badblockbits == 8)) - res = bad != 0xFF; - else - res = hweight8(bad) < chip->badblockbits; + if (likely(chip->badblockbits == 8)) + res = bad != 0xFF; + else + res = hweight8(bad) < chip->badblockbits; + ofs += mtd->writesize; + page = (int)(ofs >> chip->page_shift) & chip->pagemask; + i++; + } while (!res && i < 2 && (chip->bbt_options & NAND_BBT_SCAN2NDPAGE));

if (getchip) nand_release_device(mtd); @@ -387,57 +386,83 @@ static int nand_block_bad(struct mtd_info *mtd, loff_t ofs, int getchip)

/** * nand_default_block_markbad - [DEFAULT] mark a block bad - * @mtd: MTD device structure - * @ofs: offset from device start + * @mtd: MTD device structure + * @ofs: offset from device start * - * This is the default implementation, which can be overridden by - * a hardware specific driver. + * This is the default implementation, which can be overridden by a hardware + * specific driver. We try operations in the following order, according to our + * bbt_options (NAND_BBT_NO_OOB_BBM and NAND_BBT_USE_FLASH): + * (1) erase the affected block, to allow OOB marker to be written cleanly + * (2) update in-memory BBT + * (3) write bad block marker to OOB area of affected block + * (4) update flash-based BBT + * Note that we retain the first error encountered in (3) or (4), finish the + * procedures, and dump the error in the end. */ static int nand_default_block_markbad(struct mtd_info *mtd, loff_t ofs) { struct nand_chip *chip = mtd->priv; uint8_t buf[2] = { 0, 0 }; - int block, ret, i = 0; + int block, res, ret = 0, i = 0; + int write_oob = !(chip->bbt_options & NAND_BBT_NO_OOB_BBM);

- if (chip->options & NAND_BBT_SCANLASTPAGE) - ofs += mtd->erasesize - mtd->writesize; + if (write_oob) { + struct erase_info einfo; + + /* Attempt erase before marking OOB */ + memset(&einfo, 0, sizeof(einfo)); + einfo.mtd = mtd; + einfo.addr = ofs; + einfo.len = 1 << chip->phys_erase_shift; + nand_erase_nand(mtd, &einfo, 0); + }

/* Get block number */ block = (int)(ofs >> chip->bbt_erase_shift); + /* Mark block bad in memory-based BBT */ if (chip->bbt) chip->bbt[block >> 2] |= 0x01 << ((block & 0x03) << 1);

- /* Do we have a flash based bad block table ? */ - if (chip->options & NAND_USE_FLASH_BBT) - ret = nand_update_bbt(mtd, ofs); - else { + /* Write bad block marker to OOB */ + if (write_oob) { + struct mtd_oob_ops ops; + loff_t wr_ofs = ofs; + nand_get_device(chip, mtd, FL_WRITING);

- /* Write to first two pages and to byte 1 and 6 if necessary. - * If we write to more than one location, the first error - * encountered quits the procedure. We write two bytes per - * location, so we dont have to mess with 16 bit access. - */ - do { - chip->ops.len = chip->ops.ooblen = 2; - chip->ops.datbuf = NULL; - chip->ops.oobbuf = buf; - chip->ops.ooboffs = chip->badblockpos & ~0x01; + ops.datbuf = NULL; + ops.oobbuf = buf; + ops.ooboffs = chip->badblockpos; + if (chip->options & NAND_BUSWIDTH_16) { + ops.ooboffs &= ~0x01; + ops.len = ops.ooblen = 2; + } else { + ops.len = ops.ooblen = 1; + } + ops.mode = MTD_OPS_PLACE_OOB;

- ret = nand_do_write_oob(mtd, ofs, &chip->ops); + /* Write to first/last page(s) if necessary */ + if (chip->bbt_options & NAND_BBT_SCANLASTPAGE) + wr_ofs += mtd->erasesize - mtd->writesize; + do { + res = nand_do_write_oob(mtd, wr_ofs, &ops); + if (!ret) + ret = res;

- if (!ret && (chip->options & NAND_BBT_SCANBYTE1AND6)) { - chip->ops.ooboffs = NAND_SMALL_BADBLOCK_POS - & ~0x01; - ret = nand_do_write_oob(mtd, ofs, &chip->ops); - } i++; - ofs += mtd->writesize; - } while (!ret && (chip->options & NAND_BBT_SCAN2NDPAGE) && - i < 2); + wr_ofs += mtd->writesize; + } while ((chip->bbt_options & NAND_BBT_SCAN2NDPAGE) && i < 2);

nand_release_device(mtd); } + + /* Update flash-based bad block table */ + if (chip->bbt_options & NAND_BBT_USE_FLASH) { + res = nand_update_bbt(mtd, ofs); + if (!ret) + ret = res; + } + if (!ret) mtd->ecc_stats.badblocks++;

@@ -446,16 +471,16 @@ static int nand_default_block_markbad(struct mtd_info *mtd, loff_t ofs)

/** * nand_check_wp - [GENERIC] check if the chip is write protected - * @mtd: MTD device structure - * Check, if the device is write protected + * @mtd: MTD device structure * - * The function expects, that the device is already selected + * Check, if the device is write protected. The function expects, that the + * device is already selected. */ static int nand_check_wp(struct mtd_info *mtd) { struct nand_chip *chip = mtd->priv;

- /* broken xD cards report WP despite being writable */ + /* Broken xD cards report WP despite being writable */ if (chip->options & NAND_BROKEN_XD) return 0;

@@ -466,10 +491,10 @@ static int nand_check_wp(struct mtd_info *mtd)

/** * nand_block_checkbad - [GENERIC] Check if a block is marked bad - * @mtd: MTD device structure - * @ofs: offset from device start - * @getchip: 0, if the chip is already selected - * @allowbbt: 1, if its allowed to access the bbt area + * @mtd: MTD device structure + * @ofs: offset from device start + * @getchip: 0, if the chip is already selected + * @allowbbt: 1, if its allowed to access the bbt area * * Check, if the block is bad. Either by reading the bad block table or * calling of the scan function. @@ -491,10 +516,7 @@ static int nand_block_checkbad(struct mtd_info *mtd, loff_t ofs, int getchip, return nand_isbad_bbt(mtd, ofs, allowbbt); }

-/* - * Wait for the ready pin, after a command - * The timeout is catched later. - */ +/* Wait for the ready pin, after a command. The timeout is caught later. */ void nand_wait_ready(struct mtd_info *mtd) { struct nand_chip *chip = mtd->priv; @@ -503,7 +525,7 @@ void nand_wait_ready(struct mtd_info *mtd)

time_start = get_timer(0);

- /* wait until command is processed or timeout occures */ + /* Wait until command is processed or timeout occurs */ while (get_timer(time_start) < timeo) { if (chip->dev_ready) if (chip->dev_ready(mtd)) @@ -513,13 +535,13 @@ void nand_wait_ready(struct mtd_info *mtd)

/** * nand_command - [DEFAULT] Send command to NAND device - * @mtd: MTD device structure - * @command: the command to be sent - * @column: the column address for this command, -1 if none - * @page_addr: the page address for this command, -1 if none + * @mtd: MTD device structure + * @command: the command to be sent + * @column: the column address for this command, -1 if none + * @page_addr: the page address for this command, -1 if none * - * Send command to NAND device. This function is used for small page - * devices (256/512 Bytes per page) + * Send command to NAND device. This function is used for small page devices + * (256/512 Bytes per page). */ static void nand_command(struct mtd_info *mtd, unsigned int command, int column, int page_addr) @@ -528,9 +550,7 @@ static void nand_command(struct mtd_info *mtd, unsigned int command, int ctrl = NAND_CTRL_CLE | NAND_CTRL_CHANGE; uint32_t rst_sts_cnt = CONFIG_SYS_NAND_RESET_CNT;

- /* - * Write out the command to the device. - */ + /* Write out the command to the device */ if (command == NAND_CMD_SEQIN) { int readcmd;

@@ -550,9 +570,7 @@ static void nand_command(struct mtd_info *mtd, unsigned int command, } chip->cmd_ctrl(mtd, command, ctrl);

- /* - * Address cycle, when necessary - */ + /* Address cycle, when necessary */ ctrl = NAND_CTRL_ALE | NAND_CTRL_CHANGE; /* Serially input address */ if (column != -1) { @@ -573,8 +591,8 @@ static void nand_command(struct mtd_info *mtd, unsigned int command, chip->cmd_ctrl(mtd, NAND_CMD_NONE, NAND_NCE | NAND_CTRL_CHANGE);

/* - * program and erase have their own busy handlers - * status and sequential in needs no delay + * Program and erase have their own busy handlers status and sequential + * in needs no delay */ switch (command) {

@@ -608,8 +626,10 @@ static void nand_command(struct mtd_info *mtd, unsigned int command, return; } } - /* Apply this short delay always to ensure that we do wait tWB in - * any case on any machine. */ + /* + * Apply this short delay always to ensure that we do wait tWB in + * any case on any machine. + */ ndelay(100);

nand_wait_ready(mtd); @@ -617,14 +637,14 @@ static void nand_command(struct mtd_info *mtd, unsigned int command,

/** * nand_command_lp - [DEFAULT] Send command to NAND large page device - * @mtd: MTD device structure - * @command: the command to be sent - * @column: the column address for this command, -1 if none - * @page_addr: the page address for this command, -1 if none + * @mtd: MTD device structure + * @command: the command to be sent + * @column: the column address for this command, -1 if none + * @page_addr: the page address for this command, -1 if none * * Send command to NAND device. This is the version for the new large page - * devices We dont have the separate regions as we have in the small page - * devices. We must emulate NAND_CMD_READOOB to keep the code compatible. + * devices. We don't have the separate regions as we have in the small page + * devices. We must emulate NAND_CMD_READOOB to keep the code compatible. */ static void nand_command_lp(struct mtd_info *mtd, unsigned int command, int column, int page_addr) @@ -667,8 +687,8 @@ static void nand_command_lp(struct mtd_info *mtd, unsigned int command, chip->cmd_ctrl(mtd, NAND_CMD_NONE, NAND_NCE | NAND_CTRL_CHANGE);

/* - * program and erase have their own busy handlers - * status, sequential in, and deplete1 need no delay + * Program and erase have their own busy handlers status, sequential + * in, and deplete1 need no delay. */ switch (command) {

@@ -682,14 +702,12 @@ static void nand_command_lp(struct mtd_info *mtd, unsigned int command, case NAND_CMD_DEPLETE1: return;

- /* - * read error status commands require only a short delay - */ case NAND_CMD_STATUS_ERROR: case NAND_CMD_STATUS_ERROR0: case NAND_CMD_STATUS_ERROR1: case NAND_CMD_STATUS_ERROR2: case NAND_CMD_STATUS_ERROR3: + /* Read error status commands require only a short delay */ udelay(chip->chip_delay); return;

@@ -723,7 +741,7 @@ static void nand_command_lp(struct mtd_info *mtd, unsigned int command, default: /* * If we don't have access to the busy pin, we apply the given - * command delay + * command delay. */ if (!chip->dev_ready) { udelay(chip->chip_delay); @@ -731,8 +749,10 @@ static void nand_command_lp(struct mtd_info *mtd, unsigned int command, } }

- /* Apply this short delay always to ensure that we do wait tWB in - * any case on any machine. */ + /* + * Apply this short delay always to ensure that we do wait tWB in + * any case on any machine. + */ ndelay(100);

nand_wait_ready(mtd); @@ -740,9 +760,9 @@ static void nand_command_lp(struct mtd_info *mtd, unsigned int command,

/** * nand_get_device - [GENERIC] Get chip for selected access - * @chip: the nand chip descriptor - * @mtd: MTD device structure - * @new_state: the state which is requested + * @chip: the nand chip descriptor + * @mtd: MTD device structure + * @new_state: the state which is requested * * Get the device and lock it for exclusive access */ @@ -754,13 +774,13 @@ nand_get_device(struct nand_chip *chip, struct mtd_info *mtd, int new_state) }

/** - * nand_wait - [DEFAULT] wait until the command is done - * @mtd: MTD device structure - * @chip: NAND chip structure + * nand_wait - [DEFAULT] wait until the command is done + * @mtd: MTD device structure + * @chip: NAND chip structure * - * Wait for command done. This applies to erase and program only - * Erase can take up to 400ms and program up to 20ms according to - * general NAND and SmartMedia specs + * Wait for command done. This applies to erase and program only. Erase can + * take up to 400ms and program up to 20ms according to general NAND and + * SmartMedia specs. */ static int nand_wait(struct mtd_info *mtd, struct nand_chip *chip) { @@ -804,34 +824,37 @@ static int nand_wait(struct mtd_info *mtd, struct nand_chip *chip) }

/** - * nand_read_page_raw - [Intern] read raw page data without ecc - * @mtd: mtd info structure - * @chip: nand chip info structure - * @buf: buffer to store read data - * @page: page number to read + * nand_read_page_raw - [INTERN] read raw page data without ecc + * @mtd: mtd info structure + * @chip: nand chip info structure + * @buf: buffer to store read data + * @oob_required: caller requires OOB data read to chip->oob_poi + * @page: page number to read * - * Not for syndrome calculating ecc controllers, which use a special oob layout + * Not for syndrome calculating ECC controllers, which use a special oob layout. */ static int nand_read_page_raw(struct mtd_info *mtd, struct nand_chip *chip, - uint8_t *buf, int page) + uint8_t *buf, int oob_required, int page) { chip->read_buf(mtd, buf, mtd->writesize); - chip->read_buf(mtd, chip->oob_poi, mtd->oobsize); + if (oob_required) + chip->read_buf(mtd, chip->oob_poi, mtd->oobsize); return 0; }

/** - * nand_read_page_raw_syndrome - [Intern] read raw page data without ecc - * @mtd: mtd info structure - * @chip: nand chip info structure - * @buf: buffer to store read data - * @page: page number to read + * nand_read_page_raw_syndrome - [INTERN] read raw page data without ecc + * @mtd: mtd info structure + * @chip: nand chip info structure + * @buf: buffer to store read data + * @oob_required: caller requires OOB data read to chip->oob_poi + * @page: page number to read * * We need a special oob layout and handling even when OOB isn't used. */ static int nand_read_page_raw_syndrome(struct mtd_info *mtd, - struct nand_chip *chip, - uint8_t *buf, int page) + struct nand_chip *chip, uint8_t *buf, + int oob_required, int page) { int eccsize = chip->ecc.size; int eccbytes = chip->ecc.bytes; @@ -864,14 +887,15 @@ static int nand_read_page_raw_syndrome(struct mtd_info *mtd, }

/** - * nand_read_page_swecc - [REPLACABLE] software ecc based page read function - * @mtd: mtd info structure - * @chip: nand chip info structure - * @buf: buffer to store read data - * @page: page number to read + * nand_read_page_swecc - [REPLACEABLE] software ECC based page read function + * @mtd: mtd info structure + * @chip: nand chip info structure + * @buf: buffer to store read data + * @oob_required: caller requires OOB data read to chip->oob_poi + * @page: page number to read */ static int nand_read_page_swecc(struct mtd_info *mtd, struct nand_chip *chip, - uint8_t *buf, int page) + uint8_t *buf, int oob_required, int page) { int i, eccsize = chip->ecc.size; int eccbytes = chip->ecc.bytes; @@ -881,7 +905,7 @@ static int nand_read_page_swecc(struct mtd_info *mtd, struct nand_chip *chip, uint8_t *ecc_code = chip->buffers->ecccode; uint32_t *eccpos = chip->ecc.layout->eccpos;

- chip->ecc.read_page_raw(mtd, chip, buf, page); + chip->ecc.read_page_raw(mtd, chip, buf, 1, page);

for (i = 0; eccsteps; eccsteps--, i += eccbytes, p += eccsize) chip->ecc.calculate(mtd, p, &ecc_calc[i]); @@ -905,12 +929,12 @@ static int nand_read_page_swecc(struct mtd_info *mtd, struct nand_chip *chip, }

/** - * nand_read_subpage - [REPLACABLE] software ecc based sub-page read function - * @mtd: mtd info structure - * @chip: nand chip info structure - * @data_offs: offset of requested data within the page - * @readlen: data length - * @bufpoi: buffer to store read data + * nand_read_subpage - [REPLACEABLE] software ECC based sub-page read function + * @mtd: mtd info structure + * @chip: nand chip info structure + * @data_offs: offset of requested data within the page + * @readlen: data length + * @bufpoi: buffer to store read data */ static int nand_read_subpage(struct mtd_info *mtd, struct nand_chip *chip, uint32_t data_offs, uint32_t readlen, uint8_t *bufpoi) @@ -923,12 +947,12 @@ static int nand_read_subpage(struct mtd_info *mtd, struct nand_chip *chip, int busw = (chip->options & NAND_BUSWIDTH_16) ? 2 : 1; int index = 0;

- /* Column address wihin the page aligned to ECC size (256bytes). */ + /* Column address within the page aligned to ECC size (256bytes) */ start_step = data_offs / chip->ecc.size; end_step = (data_offs + readlen - 1) / chip->ecc.size; num_steps = end_step - start_step + 1;

- /* Data size aligned to ECC ecc.size*/ + /* Data size aligned to ECC ecc.size */ datafrag_len = num_steps * chip->ecc.size; eccfrag_len = num_steps * chip->ecc.bytes;

@@ -940,13 +964,14 @@ static int nand_read_subpage(struct mtd_info *mtd, struct nand_chip *chip, p = bufpoi + data_col_addr; chip->read_buf(mtd, p, datafrag_len);

- /* Calculate ECC */ + /* Calculate ECC */ for (i = 0; i < eccfrag_len ; i += chip->ecc.bytes, p += chip->ecc.size) chip->ecc.calculate(mtd, p, &chip->buffers->ecccalc[i]);

- /* The performance is faster if to position offsets - according to ecc.pos. Let make sure here that - there are no gaps in ecc positions */ + /* + * The performance is faster if we position offsets according to + * ecc.pos. Let's make sure that there are no gaps in ECC positions. + */ for (i = 0; i < eccfrag_len - 1; i++) { if (eccpos[i + start_step * chip->ecc.bytes] + 1 != eccpos[i + start_step * chip->ecc.bytes + 1]) { @@ -958,8 +983,10 @@ static int nand_read_subpage(struct mtd_info *mtd, struct nand_chip *chip, chip->cmdfunc(mtd, NAND_CMD_RNDOUT, mtd->writesize, -1); chip->read_buf(mtd, chip->oob_poi, mtd->oobsize); } else { - /* send the command to read the particular ecc bytes */ - /* take care about buswidth alignment in read_buf */ + /* + * Send the command to read the particular ECC bytes take care + * about buswidth alignment in read_buf. + */ index = start_step * chip->ecc.bytes;

aligned_pos = eccpos[index] & ~(busw - 1); @@ -992,16 +1019,17 @@ static int nand_read_subpage(struct mtd_info *mtd, struct nand_chip *chip, }

/** - * nand_read_page_hwecc - [REPLACABLE] hardware ecc based page read function - * @mtd: mtd info structure - * @chip: nand chip info structure - * @buf: buffer to store read data - * @page: page number to read + * nand_read_page_hwecc - [REPLACEABLE] hardware ECC based page read function + * @mtd: mtd info structure + * @chip: nand chip info structure + * @buf: buffer to store read data + * @oob_required: caller requires OOB data read to chip->oob_poi + * @page: page number to read * - * Not for syndrome calculating ecc controllers which need a special oob layout + * Not for syndrome calculating ECC controllers which need a special oob layout. */ static int nand_read_page_hwecc(struct mtd_info *mtd, struct nand_chip *chip, - uint8_t *buf, int page) + uint8_t *buf, int oob_required, int page) { int i, eccsize = chip->ecc.size; int eccbytes = chip->ecc.bytes; @@ -1037,21 +1065,21 @@ static int nand_read_page_hwecc(struct mtd_info *mtd, struct nand_chip *chip, }

/** - * nand_read_page_hwecc_oob_first - [REPLACABLE] hw ecc, read oob first - * @mtd: mtd info structure - * @chip: nand chip info structure - * @buf: buffer to store read data - * @page: page number to read + * nand_read_page_hwecc_oob_first - [REPLACEABLE] hw ecc, read oob first + * @mtd: mtd info structure + * @chip: nand chip info structure + * @buf: buffer to store read data + * @oob_required: caller requires OOB data read to chip->oob_poi + * @page: page number to read * - * Hardware ECC for large page chips, require OOB to be read first. - * For this ECC mode, the write_page method is re-used from ECC_HW. - * These methods read/write ECC from the OOB area, unlike the - * ECC_HW_SYNDROME support with multiple ECC steps, follows the - * "infix ECC" scheme and reads/writes ECC from the data area, by - * overwriting the NAND manufacturer bad block markings. + * Hardware ECC for large page chips, require OOB to be read first. For this + * ECC mode, the write_page method is re-used from ECC_HW. These methods + * read/write ECC from the OOB area, unlike the ECC_HW_SYNDROME support with + * multiple ECC steps, follows the "infix ECC" scheme and reads/writes ECC from + * the data area, by overwriting the NAND manufacturer bad block markings. */ static int nand_read_page_hwecc_oob_first(struct mtd_info *mtd, - struct nand_chip *chip, uint8_t *buf, int page) + struct nand_chip *chip, uint8_t *buf, int oob_required, int page) { int i, eccsize = chip->ecc.size; int eccbytes = chip->ecc.bytes; @@ -1086,17 +1114,18 @@ static int nand_read_page_hwecc_oob_first(struct mtd_info *mtd, }

/** - * nand_read_page_syndrome - [REPLACABLE] hardware ecc syndrom based page read - * @mtd: mtd info structure - * @chip: nand chip info structure - * @buf: buffer to store read data - * @page: page number to read + * nand_read_page_syndrome - [REPLACEABLE] hardware ECC syndrome based page read + * @mtd: mtd info structure + * @chip: nand chip info structure + * @buf: buffer to store read data + * @oob_required: caller requires OOB data read to chip->oob_poi + * @page: page number to read * - * The hw generator calculates the error syndrome automatically. Therefor - * we need a special oob layout and handling. + * The hw generator calculates the error syndrome automatically. Therefore we + * need a special oob layout and handling. */ static int nand_read_page_syndrome(struct mtd_info *mtd, struct nand_chip *chip, - uint8_t *buf, int page) + uint8_t *buf, int oob_required, int page) { int i, eccsize = chip->ecc.size; int eccbytes = chip->ecc.bytes; @@ -1141,29 +1170,29 @@ static int nand_read_page_syndrome(struct mtd_info *mtd, struct nand_chip *chip, }

/** - * nand_transfer_oob - [Internal] Transfer oob to client buffer - * @chip: nand chip structure - * @oob: oob destination address - * @ops: oob ops structure - * @len: size of oob to transfer + * nand_transfer_oob - [INTERN] Transfer oob to client buffer + * @chip: nand chip structure + * @oob: oob destination address + * @ops: oob ops structure + * @len: size of oob to transfer */ static uint8_t *nand_transfer_oob(struct nand_chip *chip, uint8_t *oob, struct mtd_oob_ops *ops, size_t len) { switch (ops->mode) {

- case MTD_OOB_PLACE: - case MTD_OOB_RAW: + case MTD_OPS_PLACE_OOB: + case MTD_OPS_RAW: memcpy(oob, chip->oob_poi + ops->ooboffs, len); return oob + len;

- case MTD_OOB_AUTO: { + case MTD_OPS_AUTO_OOB: { struct nand_oobfree *free = chip->ecc.layout->oobfree; uint32_t boffs = 0, roffs = ops->ooboffs; size_t bytes = 0;

for (; free->length && len; free++, len -= bytes) { - /* Read request not from offset 0 ? */ + /* Read request not from offset 0? */ if (unlikely(roffs)) { if (roffs >= free->length) { roffs -= free->length; @@ -1189,26 +1218,23 @@ static uint8_t *nand_transfer_oob(struct nand_chip *chip, uint8_t *oob, }

/** - * nand_do_read_ops - [Internal] Read data with ECC - * - * @mtd: MTD device structure - * @from: offset to read from - * @ops: oob ops structure + * nand_do_read_ops - [INTERN] Read data with ECC + * @mtd: MTD device structure + * @from: offset to read from + * @ops: oob ops structure * * Internal function. Called with chip held. */ static int nand_do_read_ops(struct mtd_info *mtd, loff_t from, struct mtd_oob_ops *ops) { - int chipnr, page, realpage, col, bytes, aligned; + int chipnr, page, realpage, col, bytes, aligned, oob_required; struct nand_chip *chip = mtd->priv; struct mtd_ecc_stats stats; - int blkcheck = (1 << (chip->phys_erase_shift - chip->page_shift)) - 1; - int sndcmd = 1; int ret = 0; uint32_t readlen = ops->len; uint32_t oobreadlen = ops->ooblen; - uint32_t max_oobsize = ops->mode == MTD_OOB_AUTO ? + uint32_t max_oobsize = ops->mode == MTD_OPS_AUTO_OOB ? mtd->oobavail : mtd->oobsize;

uint8_t *bufpoi, *oob, *buf; @@ -1225,6 +1251,7 @@ static int nand_do_read_ops(struct mtd_info *mtd, loff_t from,

buf = ops->datbuf; oob = ops->oobbuf; + oob_required = oob ? 1 : 0;

while (1) { WATCHDOG_RESET(); @@ -1232,41 +1259,46 @@ static int nand_do_read_ops(struct mtd_info *mtd, loff_t from, bytes = min(mtd->writesize - col, readlen); aligned = (bytes == mtd->writesize);

- /* Is the current page in the buffer ? */ + /* Is the current page in the buffer? */ if (realpage != chip->pagebuf || oob) { bufpoi = aligned ? buf : chip->buffers->databuf;

- if (likely(sndcmd)) { - chip->cmdfunc(mtd, NAND_CMD_READ0, 0x00, page); - sndcmd = 0; - } + chip->cmdfunc(mtd, NAND_CMD_READ0, 0x00, page);

/* Now read the page into the buffer */ - if (unlikely(ops->mode == MTD_OOB_RAW)) - ret = chip->ecc.read_page_raw(mtd, chip, - bufpoi, page); + if (unlikely(ops->mode == MTD_OPS_RAW)) + ret = chip->ecc.read_page_raw(mtd, chip, bufpoi, + oob_required, + page); else if (!aligned && NAND_HAS_SUBPAGE_READ(chip) && !oob) ret = chip->ecc.read_subpage(mtd, chip, col, bytes, bufpoi); else ret = chip->ecc.read_page(mtd, chip, bufpoi, - page); - if (ret < 0) + oob_required, page); + if (ret < 0) { + if (!aligned) + /* Invalidate page cache */ + chip->pagebuf = -1; break; + }

/* Transfer not aligned data */ if (!aligned) { if (!NAND_HAS_SUBPAGE_READ(chip) && !oob && - !(mtd->ecc_stats.failed - stats.failed)) + !(mtd->ecc_stats.failed - stats.failed) && + (ops->mode != MTD_OPS_RAW)) chip->pagebuf = realpage; + else + /* Invalidate page cache */ + chip->pagebuf = -1; memcpy(buf, chip->buffers->databuf + col, bytes); }

buf += bytes;

if (unlikely(oob)) { - int toread = min(oobreadlen, max_oobsize);

if (toread) { @@ -1275,20 +1307,6 @@ static int nand_do_read_ops(struct mtd_info *mtd, loff_t from, oobreadlen -= toread; } } - - if (!(chip->options & NAND_NO_READRDY)) { - /* - * Apply delay or wait for ready/busy pin. Do - * this before the AUTOINCR check, so no - * problems arise if a chip which does auto - * increment is marked as NOAUTOINCR by the - * board driver. - */ - if (!chip->dev_ready) - udelay(chip->chip_delay); - else - nand_wait_ready(mtd); - } } else { memcpy(buf, chip->buffers->databuf + col, bytes); buf += bytes; @@ -1299,7 +1317,7 @@ static int nand_do_read_ops(struct mtd_info *mtd, loff_t from, if (!readlen) break;

- /* For subsequent reads align to page boundary. */ + /* For subsequent reads align to page boundary */ col = 0; /* Increment page address */ realpage++; @@ -1311,12 +1329,6 @@ static int nand_do_read_ops(struct mtd_info *mtd, loff_t from, chip->select_chip(mtd, -1); chip->select_chip(mtd, chipnr); } - - /* Check, if the chip supports auto page increment - * or if we have hit a block boundary. - */ - if (!NAND_CANAUTOINCR(chip) || !(page & blkcheck)) - sndcmd = 1; }

ops->retlen = ops->len - (size_t) readlen; @@ -1334,69 +1346,55 @@ static int nand_do_read_ops(struct mtd_info *mtd, loff_t from,

/** * nand_read - [MTD Interface] MTD compatibility function for nand_do_read_ecc - * @mtd: MTD device structure - * @from: offset to read from - * @len: number of bytes to read - * @retlen: pointer to variable to store the number of read bytes - * @buf: the databuffer to put data + * @mtd: MTD device structure + * @from: offset to read from + * @len: number of bytes to read + * @retlen: pointer to variable to store the number of read bytes + * @buf: the databuffer to put data * - * Get hold of the chip and call nand_do_read + * Get hold of the chip and call nand_do_read. */ static int nand_read(struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, uint8_t *buf) { struct nand_chip *chip = mtd->priv; + struct mtd_oob_ops ops; int ret;

- /* Do not allow reads past end of device */ - if ((from + len) > mtd->size) - return -EINVAL; - if (!len) - return 0; - nand_get_device(chip, mtd, FL_READING); - - chip->ops.len = len; - chip->ops.datbuf = buf; - chip->ops.oobbuf = NULL; - - ret = nand_do_read_ops(mtd, from, &chip->ops); - - *retlen = chip->ops.retlen; - + ops.len = len; + ops.datbuf = buf; + ops.oobbuf = NULL; + ops.mode = MTD_OPS_PLACE_OOB; + ret = nand_do_read_ops(mtd, from, &ops); + *retlen = ops.retlen; nand_release_device(mtd); - return ret; }

/** - * nand_read_oob_std - [REPLACABLE] the most common OOB data read function - * @mtd: mtd info structure - * @chip: nand chip info structure - * @page: page number to read - * @sndcmd: flag whether to issue read command or not + * nand_read_oob_std - [REPLACEABLE] the most common OOB data read function + * @mtd: mtd info structure + * @chip: nand chip info structure + * @page: page number to read */ static int nand_read_oob_std(struct mtd_info *mtd, struct nand_chip *chip, - int page, int sndcmd) + int page) { - if (sndcmd) { - chip->cmdfunc(mtd, NAND_CMD_READOOB, 0, page); - sndcmd = 0; - } + chip->cmdfunc(mtd, NAND_CMD_READOOB, 0, page); chip->read_buf(mtd, chip->oob_poi, mtd->oobsize); - return sndcmd; + return 0; }

/** - * nand_read_oob_syndrome - [REPLACABLE] OOB data read function for HW ECC + * nand_read_oob_syndrome - [REPLACEABLE] OOB data read function for HW ECC * with syndromes - * @mtd: mtd info structure - * @chip: nand chip info structure - * @page: page number to read - * @sndcmd: flag whether to issue read command or not + * @mtd: mtd info structure + * @chip: nand chip info structure + * @page: page number to read */ static int nand_read_oob_syndrome(struct mtd_info *mtd, struct nand_chip *chip, - int page, int sndcmd) + int page) { uint8_t *buf = chip->oob_poi; int length = mtd->oobsize; @@ -1423,14 +1421,14 @@ static int nand_read_oob_syndrome(struct mtd_info *mtd, struct nand_chip *chip, if (length > 0) chip->read_buf(mtd, bufpoi, length);

- return 1; + return 0; }

/** - * nand_write_oob_std - [REPLACABLE] the most common OOB data write function - * @mtd: mtd info structure - * @chip: nand chip info structure - * @page: page number to write + * nand_write_oob_std - [REPLACEABLE] the most common OOB data write function + * @mtd: mtd info structure + * @chip: nand chip info structure + * @page: page number to write */ static int nand_write_oob_std(struct mtd_info *mtd, struct nand_chip *chip, int page) @@ -1450,11 +1448,11 @@ static int nand_write_oob_std(struct mtd_info *mtd, struct nand_chip *chip, }

/** - * nand_write_oob_syndrome - [REPLACABLE] OOB data write function for HW ECC - * with syndrome - only for large page flash ! - * @mtd: mtd info structure - * @chip: nand chip info structure - * @page: page number to write + * nand_write_oob_syndrome - [REPLACEABLE] OOB data write function for HW ECC + * with syndrome - only for large page flash + * @mtd: mtd info structure + * @chip: nand chip info structure + * @page: page number to write */ static int nand_write_oob_syndrome(struct mtd_info *mtd, struct nand_chip *chip, int page) @@ -1509,27 +1507,30 @@ static int nand_write_oob_syndrome(struct mtd_info *mtd, }

/** - * nand_do_read_oob - [Intern] NAND read out-of-band - * @mtd: MTD device structure - * @from: offset to read from - * @ops: oob operations description structure + * nand_do_read_oob - [INTERN] NAND read out-of-band + * @mtd: MTD device structure + * @from: offset to read from + * @ops: oob operations description structure * - * NAND read out-of-band data from the spare area + * NAND read out-of-band data from the spare area. */ static int nand_do_read_oob(struct mtd_info *mtd, loff_t from, struct mtd_oob_ops *ops) { - int page, realpage, chipnr, sndcmd = 1; + int page, realpage, chipnr; struct nand_chip *chip = mtd->priv; - int blkcheck = (1 << (chip->phys_erase_shift - chip->page_shift)) - 1; + struct mtd_ecc_stats stats; int readlen = ops->ooblen; int len; uint8_t *buf = ops->oobbuf; + int ret = 0;

MTDDEBUG(MTD_DEBUG_LEVEL3, "%s: from = 0x%08Lx, len = %i\n", __func__, (unsigned long long)from, readlen);

- if (ops->mode == MTD_OOB_AUTO) + stats = mtd->ecc_stats; + + if (ops->mode == MTD_OPS_AUTO_OOB) len = chip->ecc.layout->oobavail; else len = mtd->oobsize; @@ -1558,24 +1559,17 @@ static int nand_do_read_oob(struct mtd_info *mtd, loff_t from,

while (1) { WATCHDOG_RESET(); - sndcmd = chip->ecc.read_oob(mtd, chip, page, sndcmd); + if (ops->mode == MTD_OPS_RAW) + ret = chip->ecc.read_oob_raw(mtd, chip, page); + else + ret = chip->ecc.read_oob(mtd, chip, page); + + if (ret < 0) + break;

len = min(len, readlen); buf = nand_transfer_oob(chip, buf, ops, len);

- if (!(chip->options & NAND_NO_READRDY)) { - /* - * Apply delay or wait for ready/busy pin. Do this - * before the AUTOINCR check, so no problems arise if a - * chip which does auto increment is marked as - * NOAUTOINCR by the board driver. - */ - if (!chip->dev_ready) - udelay(chip->chip_delay); - else - nand_wait_ready(mtd); - } - readlen -= len; if (!readlen) break; @@ -1590,25 +1584,26 @@ static int nand_do_read_oob(struct mtd_info *mtd, loff_t from, chip->select_chip(mtd, -1); chip->select_chip(mtd, chipnr); } - - /* Check, if the chip supports auto page increment - * or if we have hit a block boundary. - */ - if (!NAND_CANAUTOINCR(chip) || !(page & blkcheck)) - sndcmd = 1; }

- ops->oobretlen = ops->ooblen; - return 0; + ops->oobretlen = ops->ooblen - readlen; + + if (ret < 0) + return ret; + + if (mtd->ecc_stats.failed - stats.failed) + return -EBADMSG; + + return mtd->ecc_stats.corrected - stats.corrected ? -EUCLEAN : 0; }

/** * nand_read_oob - [MTD Interface] NAND read data and/or out-of-band - * @mtd: MTD device structure - * @from: offset to read from - * @ops: oob operation description structure + * @mtd: MTD device structure + * @from: offset to read from + * @ops: oob operation description structure * - * NAND read data and/or out-of-band data + * NAND read data and/or out-of-band data. */ static int nand_read_oob(struct mtd_info *mtd, loff_t from, struct mtd_oob_ops *ops) @@ -1628,9 +1623,9 @@ static int nand_read_oob(struct mtd_info *mtd, loff_t from, nand_get_device(chip, mtd, FL_READING);

switch (ops->mode) { - case MTD_OOB_PLACE: - case MTD_OOB_AUTO: - case MTD_OOB_RAW: + case MTD_OPS_PLACE_OOB: + case MTD_OPS_AUTO_OOB: + case MTD_OPS_RAW: break;

default: @@ -1649,31 +1644,36 @@ out:

/** - * nand_write_page_raw - [Intern] raw page write function - * @mtd: mtd info structure - * @chip: nand chip info structure - * @buf: data buffer + * nand_write_page_raw - [INTERN] raw page write function + * @mtd: mtd info structure + * @chip: nand chip info structure + * @buf: data buffer + * @oob_required: must write chip->oob_poi to OOB * - * Not for syndrome calculating ecc controllers, which use a special oob layout + * Not for syndrome calculating ECC controllers, which use a special oob layout. */ -static void nand_write_page_raw(struct mtd_info *mtd, struct nand_chip *chip, - const uint8_t *buf) +static int nand_write_page_raw(struct mtd_info *mtd, struct nand_chip *chip, + const uint8_t *buf, int oob_required) { chip->write_buf(mtd, buf, mtd->writesize); - chip->write_buf(mtd, chip->oob_poi, mtd->oobsize); + if (oob_required) + chip->write_buf(mtd, chip->oob_poi, mtd->oobsize); + + return 0; }

/** - * nand_write_page_raw_syndrome - [Intern] raw page write function - * @mtd: mtd info structure - * @chip: nand chip info structure - * @buf: data buffer + * nand_write_page_raw_syndrome - [INTERN] raw page write function + * @mtd: mtd info structure + * @chip: nand chip info structure + * @buf: data buffer + * @oob_required: must write chip->oob_poi to OOB * * We need a special oob layout and handling even when ECC isn't checked. */ -static void nand_write_page_raw_syndrome(struct mtd_info *mtd, +static int nand_write_page_raw_syndrome(struct mtd_info *mtd, struct nand_chip *chip, - const uint8_t *buf) + const uint8_t *buf, int oob_required) { int eccsize = chip->ecc.size; int eccbytes = chip->ecc.bytes; @@ -1701,15 +1701,18 @@ static void nand_write_page_raw_syndrome(struct mtd_info *mtd, size = mtd->oobsize - (oob - chip->oob_poi); if (size) chip->write_buf(mtd, oob, size); + + return 0; } /** - * nand_write_page_swecc - [REPLACABLE] software ecc based page write function - * @mtd: mtd info structure - * @chip: nand chip info structure - * @buf: data buffer + * nand_write_page_swecc - [REPLACEABLE] software ECC based page write function + * @mtd: mtd info structure + * @chip: nand chip info structure + * @buf: data buffer + * @oob_required: must write chip->oob_poi to OOB */ -static void nand_write_page_swecc(struct mtd_info *mtd, struct nand_chip *chip, - const uint8_t *buf) +static int nand_write_page_swecc(struct mtd_info *mtd, struct nand_chip *chip, + const uint8_t *buf, int oob_required) { int i, eccsize = chip->ecc.size; int eccbytes = chip->ecc.bytes; @@ -1718,24 +1721,25 @@ static void nand_write_page_swecc(struct mtd_info *mtd, struct nand_chip *chip, const uint8_t *p = buf; uint32_t *eccpos = chip->ecc.layout->eccpos;

- /* Software ecc calculation */ + /* Software ECC calculation */ for (i = 0; eccsteps; eccsteps--, i += eccbytes, p += eccsize) chip->ecc.calculate(mtd, p, &ecc_calc[i]);

for (i = 0; i < chip->ecc.total; i++) chip->oob_poi[eccpos[i]] = ecc_calc[i];

- chip->ecc.write_page_raw(mtd, chip, buf); + return chip->ecc.write_page_raw(mtd, chip, buf, 1); }

/** - * nand_write_page_hwecc - [REPLACABLE] hardware ecc based page write function - * @mtd: mtd info structure - * @chip: nand chip info structure - * @buf: data buffer + * nand_write_page_hwecc - [REPLACEABLE] hardware ECC based page write function + * @mtd: mtd info structure + * @chip: nand chip info structure + * @buf: data buffer + * @oob_required: must write chip->oob_poi to OOB */ -static void nand_write_page_hwecc(struct mtd_info *mtd, struct nand_chip *chip, - const uint8_t *buf) +static int nand_write_page_hwecc(struct mtd_info *mtd, struct nand_chip *chip, + const uint8_t *buf, int oob_required) { int i, eccsize = chip->ecc.size; int eccbytes = chip->ecc.bytes; @@ -1754,19 +1758,23 @@ static void nand_write_page_hwecc(struct mtd_info *mtd, struct nand_chip *chip, chip->oob_poi[eccpos[i]] = ecc_calc[i];

chip->write_buf(mtd, chip->oob_poi, mtd->oobsize); + + return 0; }

/** - * nand_write_page_syndrome - [REPLACABLE] hardware ecc syndrom based page write - * @mtd: mtd info structure - * @chip: nand chip info structure - * @buf: data buffer + * nand_write_page_syndrome - [REPLACEABLE] hardware ECC syndrome based page write + * @mtd: mtd info structure + * @chip: nand chip info structure + * @buf: data buffer + * @oob_required: must write chip->oob_poi to OOB * - * The hw generator calculates the error syndrome automatically. Therefor - * we need a special oob layout and handling. + * The hw generator calculates the error syndrome automatically. Therefore we + * need a special oob layout and handling. */ -static void nand_write_page_syndrome(struct mtd_info *mtd, - struct nand_chip *chip, const uint8_t *buf) +static int nand_write_page_syndrome(struct mtd_info *mtd, + struct nand_chip *chip, + const uint8_t *buf, int oob_required) { int i, eccsize = chip->ecc.size; int eccbytes = chip->ecc.bytes; @@ -1798,32 +1806,39 @@ static void nand_write_page_syndrome(struct mtd_info *mtd, i = mtd->oobsize - (oob - chip->oob_poi); if (i) chip->write_buf(mtd, oob, i); + + return 0; }

/** * nand_write_page - [REPLACEABLE] write one page - * @mtd: MTD device structure - * @chip: NAND chip descriptor - * @buf: the data to write - * @page: page number to write - * @cached: cached programming - * @raw: use _raw version of write_page + * @mtd: MTD device structure + * @chip: NAND chip descriptor + * @buf: the data to write + * @oob_required: must write chip->oob_poi to OOB + * @page: page number to write + * @cached: cached programming + * @raw: use _raw version of write_page */ static int nand_write_page(struct mtd_info *mtd, struct nand_chip *chip, - const uint8_t *buf, int page, int cached, int raw) + const uint8_t *buf, int oob_required, int page, + int cached, int raw) { int status;

chip->cmdfunc(mtd, NAND_CMD_SEQIN, 0x00, page);

if (unlikely(raw)) - chip->ecc.write_page_raw(mtd, chip, buf); + status = chip->ecc.write_page_raw(mtd, chip, buf, oob_required); else - chip->ecc.write_page(mtd, chip, buf); + status = chip->ecc.write_page(mtd, chip, buf, oob_required); + + if (status < 0) + return status;

/* - * Cached progamming disabled for now, Not sure if its worth the - * trouble. The speed gain is not very impressive. (2.3->2.6Mib/s) + * Cached progamming disabled for now. Not sure if it's worth the + * trouble. The speed gain is not very impressive. (2.3->2.6Mib/s). */ cached = 0;

@@ -1833,7 +1848,7 @@ static int nand_write_page(struct mtd_info *mtd, struct nand_chip *chip, status = chip->waitfunc(mtd, chip); /* * See if operation failed and additional status checks are - * available + * available. */ if ((status & NAND_STATUS_FAIL) && (chip->errstat)) status = chip->errstat(mtd, chip, FL_WRITING, status, @@ -1852,34 +1867,45 @@ static int nand_write_page(struct mtd_info *mtd, struct nand_chip *chip,

if (chip->verify_buf(mtd, buf, mtd->writesize)) return -EIO; + + /* Make sure the next page prog is preceded by a status read */ + chip->cmdfunc(mtd, NAND_CMD_STATUS, -1, -1); #endif return 0; }

/** - * nand_fill_oob - [Internal] Transfer client buffer to oob - * @chip: nand chip structure - * @oob: oob data buffer - * @len: oob data write length - * @ops: oob ops structure + * nand_fill_oob - [INTERN] Transfer client buffer to oob + * @mtd: MTD device structure + * @oob: oob data buffer + * @len: oob data write length + * @ops: oob ops structure */ -static uint8_t *nand_fill_oob(struct nand_chip *chip, uint8_t *oob, size_t len, - struct mtd_oob_ops *ops) +static uint8_t *nand_fill_oob(struct mtd_info *mtd, uint8_t *oob, size_t len, + struct mtd_oob_ops *ops) { + struct nand_chip *chip = mtd->priv; + + /* + * Initialise to all 0xFF, to avoid the possibility of left over OOB + * data from a previous OOB read. + */ + memset(chip->oob_poi, 0xff, mtd->oobsize); + switch (ops->mode) {

- case MTD_OOB_PLACE: - case MTD_OOB_RAW: + case MTD_OPS_PLACE_OOB: + case MTD_OPS_RAW: memcpy(chip->oob_poi + ops->ooboffs, oob, len); return oob + len;

- case MTD_OOB_AUTO: { + case MTD_OPS_AUTO_OOB: { struct nand_oobfree *free = chip->ecc.layout->oobfree; uint32_t boffs = 0, woffs = ops->ooboffs; size_t bytes = 0;

for (; free->length && len; free++, len -= bytes) { - /* Write request not from offset 0 ? */ + /* Write request not from offset 0? */ if (unlikely(woffs)) { if (woffs >= free->length) { woffs -= free->length; @@ -1907,12 +1933,12 @@ static uint8_t *nand_fill_oob(struct nand_chip *chip, uint8_t *oob, size_t len, #define NOTALIGNED(x) ((x & (chip->subpagesize - 1)) != 0)

/** - * nand_do_write_ops - [Internal] NAND write with ECC - * @mtd: MTD device structure - * @to: offset to write to - * @ops: oob operations description structure + * nand_do_write_ops - [INTERN] NAND write with ECC + * @mtd: MTD device structure + * @to: offset to write to + * @ops: oob operations description structure * - * NAND write with ECC + * NAND write with ECC. */ static int nand_do_write_ops(struct mtd_info *mtd, loff_t to, struct mtd_oob_ops *ops) @@ -1922,12 +1948,13 @@ static int nand_do_write_ops(struct mtd_info *mtd, loff_t to, uint32_t writelen = ops->len;

uint32_t oobwritelen = ops->ooblen; - uint32_t oobmaxlen = ops->mode == MTD_OOB_AUTO ? + uint32_t oobmaxlen = ops->mode == MTD_OPS_AUTO_OOB ? mtd->oobavail : mtd->oobsize;

uint8_t *oob = ops->oobbuf; uint8_t *buf = ops->datbuf; int ret, subpage; + int oob_required = oob ? 1 : 0;

ops->retlen = 0; if (!writelen) @@ -1957,10 +1984,6 @@ static int nand_do_write_ops(struct mtd_info *mtd, loff_t to, (chip->pagebuf << chip->page_shift) < (to + ops->len)) chip->pagebuf = -1;

- /* If we're not given explicit OOB data, let it be 0xFF */ - if (likely(!oob)) - memset(chip->oob_poi, 0xff, mtd->oobsize); - /* Don't allow multipage oob writes with offset */ if (oob && ops->ooboffs && (ops->ooboffs + ops->ooblen > oobmaxlen)) return -EINVAL; @@ -1972,7 +1995,7 @@ static int nand_do_write_ops(struct mtd_info *mtd, loff_t to, int cached = writelen > bytes && page != blockmask; uint8_t *wbuf = buf;

- /* Partial page write ? */ + /* Partial page write? */ if (unlikely(column || writelen < (mtd->writesize - 1))) { cached = 0; bytes = min_t(int, bytes - column, (int) writelen); @@ -1984,12 +2007,15 @@ static int nand_do_write_ops(struct mtd_info *mtd, loff_t to,

if (unlikely(oob)) { size_t len = min(oobwritelen, oobmaxlen); - oob = nand_fill_oob(chip, oob, len, ops); + oob = nand_fill_oob(mtd, oob, len, ops); oobwritelen -= len; + } else { + /* We still need to erase leftover OOB data */ + memset(chip->oob_poi, 0xff, mtd->oobsize); }

- ret = chip->write_page(mtd, chip, wbuf, page, cached, - (ops->mode == MTD_OOB_RAW)); + ret = chip->write_page(mtd, chip, wbuf, oob_required, page, + cached, (ops->mode == MTD_OPS_RAW)); if (ret) break;

@@ -2018,48 +2044,39 @@ static int nand_do_write_ops(struct mtd_info *mtd, loff_t to,

/** * nand_write - [MTD Interface] NAND write with ECC - * @mtd: MTD device structure - * @to: offset to write to - * @len: number of bytes to write - * @retlen: pointer to variable to store the number of written bytes - * @buf: the data to write + * @mtd: MTD device structure + * @to: offset to write to + * @len: number of bytes to write + * @retlen: pointer to variable to store the number of written bytes + * @buf: the data to write * - * NAND write with ECC + * NAND write with ECC. */ static int nand_write(struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen, const uint8_t *buf) { struct nand_chip *chip = mtd->priv; + struct mtd_oob_ops ops; int ret;

- /* Do not allow writes past end of device */ - if ((to + len) > mtd->size) - return -EINVAL; - if (!len) - return 0; - nand_get_device(chip, mtd, FL_WRITING); - - chip->ops.len = len; - chip->ops.datbuf = (uint8_t *)buf; - chip->ops.oobbuf = NULL; - - ret = nand_do_write_ops(mtd, to, &chip->ops); - - *retlen = chip->ops.retlen; - + ops.len = len; + ops.datbuf = (uint8_t *)buf; + ops.oobbuf = NULL; + ops.mode = MTD_OPS_PLACE_OOB; + ret = nand_do_write_ops(mtd, to, &ops); + *retlen = ops.retlen; nand_release_device(mtd); - return ret; }

/** * nand_do_write_oob - [MTD Interface] NAND write out-of-band - * @mtd: MTD device structure - * @to: offset to write to - * @ops: oob operation description structure + * @mtd: MTD device structure + * @to: offset to write to + * @ops: oob operation description structure * - * NAND write out-of-band + * NAND write out-of-band. */ static int nand_do_write_oob(struct mtd_info *mtd, loff_t to, struct mtd_oob_ops *ops) @@ -2070,7 +2087,7 @@ static int nand_do_write_oob(struct mtd_info *mtd, loff_t to, MTDDEBUG(MTD_DEBUG_LEVEL3, "%s: to = 0x%08x, len = %i\n", __func__, (unsigned int)to, (int)ops->ooblen);

- if (ops->mode == MTD_OOB_AUTO) + if (ops->mode == MTD_OPS_AUTO_OOB) len = chip->ecc.layout->oobavail; else len = mtd->oobsize; @@ -2120,10 +2137,12 @@ static int nand_do_write_oob(struct mtd_info *mtd, loff_t to, if (page == chip->pagebuf) chip->pagebuf = -1;

- memset(chip->oob_poi, 0xff, mtd->oobsize); - nand_fill_oob(chip, ops->oobbuf, ops->ooblen, ops); - status = chip->ecc.write_oob(mtd, chip, page & chip->pagemask); - memset(chip->oob_poi, 0xff, mtd->oobsize); + nand_fill_oob(mtd, ops->oobbuf, ops->ooblen, ops); + + if (ops->mode == MTD_OPS_RAW) + status = chip->ecc.write_oob_raw(mtd, chip, page & chip->pagemask); + else + status = chip->ecc.write_oob(mtd, chip, page & chip->pagemask);

if (status) return status; @@ -2135,9 +2154,9 @@ static int nand_do_write_oob(struct mtd_info *mtd, loff_t to,

/** * nand_write_oob - [MTD Interface] NAND write data and/or out-of-band - * @mtd: MTD device structure - * @to: offset to write to - * @ops: oob operation description structure + * @mtd: MTD device structure + * @to: offset to write to + * @ops: oob operation description structure */ static int nand_write_oob(struct mtd_info *mtd, loff_t to, struct mtd_oob_ops *ops) @@ -2157,9 +2176,9 @@ static int nand_write_oob(struct mtd_info *mtd, loff_t to, nand_get_device(chip, mtd, FL_WRITING);

switch (ops->mode) { - case MTD_OOB_PLACE: - case MTD_OOB_AUTO: - case MTD_OOB_RAW: + case MTD_OPS_PLACE_OOB: + case MTD_OPS_AUTO_OOB: + case MTD_OPS_RAW: break;

default: @@ -2177,11 +2196,11 @@ out: }

/** - * single_erease_cmd - [GENERIC] NAND standard block erase command function - * @mtd: MTD device structure - * @page: the page address of the block which will be erased + * single_erase_cmd - [GENERIC] NAND standard block erase command function + * @mtd: MTD device structure + * @page: the page address of the block which will be erased * - * Standard erase command for NAND chips + * Standard erase command for NAND chips. */ static void single_erase_cmd(struct mtd_info *mtd, int page) { @@ -2192,12 +2211,11 @@ static void single_erase_cmd(struct mtd_info *mtd, int page) }

/** - * multi_erease_cmd - [GENERIC] AND specific block erase command function - * @mtd: MTD device structure - * @page: the page address of the block which will be erased + * multi_erase_cmd - [GENERIC] AND specific block erase command function + * @mtd: MTD device structure + * @page: the page address of the block which will be erased * - * AND multi block erase command function - * Erase 4 consecutive blocks + * AND multi block erase command function. Erase 4 consecutive blocks. */ static void multi_erase_cmd(struct mtd_info *mtd, int page) { @@ -2212,10 +2230,10 @@ static void multi_erase_cmd(struct mtd_info *mtd, int page)

/** * nand_erase - [MTD Interface] erase block(s) - * @mtd: MTD device structure - * @instr: erase instruction + * @mtd: MTD device structure + * @instr: erase instruction * - * Erase one ore more blocks + * Erase one ore more blocks. */ static int nand_erase(struct mtd_info *mtd, struct erase_info *instr) { @@ -2224,12 +2242,12 @@ static int nand_erase(struct mtd_info *mtd, struct erase_info *instr)

#define BBT_PAGE_MASK 0xffffff3f /** - * nand_erase_nand - [Internal] erase block(s) - * @mtd: MTD device structure - * @instr: erase instruction - * @allowbbt: allow erasing the bbt area + * nand_erase_nand - [INTERN] erase block(s) + * @mtd: MTD device structure + * @instr: erase instruction + * @allowbbt: allow erasing the bbt area * - * Erase one ore more blocks + * Erase one ore more blocks. */ int nand_erase_nand(struct mtd_info *mtd, struct erase_info *instr, int allowbbt) @@ -2247,8 +2265,6 @@ int nand_erase_nand(struct mtd_info *mtd, struct erase_info *instr, if (check_offs_len(mtd, instr->addr, instr->len)) return -EINVAL;

- instr->fail_addr = MTD_FAIL_ADDR_UNKNOWN; - /* Grab the lock and see if the device is available */ nand_get_device(chip, mtd, FL_ERASING);

@@ -2274,7 +2290,7 @@ int nand_erase_nand(struct mtd_info *mtd, struct erase_info *instr, * If BBT requires refresh, set the BBT page mask to see if the BBT * should be rewritten. Otherwise the mask is set to 0xffffffff which * can not be matched. This is also done when the bbt is actually - * erased to avoid recusrsive updates + * erased to avoid recursive updates. */ if (chip->options & BBT_AUTO_REFRESH && !allowbbt) bbt_masked_page = chip->bbt_td->pages[chipnr] & BBT_PAGE_MASK; @@ -2286,20 +2302,18 @@ int nand_erase_nand(struct mtd_info *mtd, struct erase_info *instr,

while (len) { WATCHDOG_RESET(); - /* - * heck if we have a bad block, we do not erase bad blocks ! - */ + /* Check if we have a bad block, we do not erase bad blocks! */ if (!instr->scrub && nand_block_checkbad(mtd, ((loff_t) page) << chip->page_shift, 0, allowbbt)) { - printk(KERN_WARNING "%s: attempt to erase a bad block " - "at page 0x%08x\n", __func__, page); + pr_warn("%s: attempt to erase a bad block at page 0x%08x\n", + __func__, page); instr->state = MTD_ERASE_FAILED; goto erase_exit; }

/* * Invalidate the page cache, if we erase the block which - * contains the current cached page + * contains the current cached page. */ if (page <= chip->pagebuf && chip->pagebuf < (page + pages_per_block)) @@ -2329,7 +2343,7 @@ int nand_erase_nand(struct mtd_info *mtd, struct erase_info *instr,

/* * If BBT requires refresh, set the BBT rewrite flag to the - * page being erased + * page being erased. */ if (bbt_masked_page != 0xffffffff && (page & BBT_PAGE_MASK) == bbt_masked_page) @@ -2348,7 +2362,7 @@ int nand_erase_nand(struct mtd_info *mtd, struct erase_info *instr,

/* * If BBT requires refresh and BBT-PERCHIP, set the BBT - * page mask to see if this BBT should be rewritten + * page mask to see if this BBT should be rewritten. */ if (bbt_masked_page != 0xffffffff && (chip->bbt_td->options & NAND_BBT_PERCHIP)) @@ -2371,7 +2385,7 @@ erase_exit:

/* * If BBT requires refresh and erase was successful, rewrite any - * selected bad block tables + * selected bad block tables. */ if (bbt_masked_page == 0xffffffff || ret) return ret; @@ -2379,7 +2393,7 @@ erase_exit: for (chipnr = 0; chipnr < chip->numchips; chipnr++) { if (!rewrite_bbt[chipnr]) continue; - /* update the BBT for chip */ + /* Update the BBT for chip */ MTDDEBUG(MTD_DEBUG_LEVEL0, "%s: nand_update_bbt " "(%d:0x%0llx 0x%0x)\n", __func__, chipnr, rewrite_bbt[chipnr], chip->bbt_td->pages[chipnr]); @@ -2392,9 +2406,9 @@ erase_exit:

/** * nand_sync - [MTD Interface] sync - * @mtd: MTD device structure + * @mtd: MTD device structure * - * Sync is actually a wait for chip ready function + * Sync is actually a wait for chip ready function. */ static void nand_sync(struct mtd_info *mtd) { @@ -2410,22 +2424,18 @@ static void nand_sync(struct mtd_info *mtd)

/** * nand_block_isbad - [MTD Interface] Check if block at offset is bad - * @mtd: MTD device structure - * @offs: offset relative to mtd start + * @mtd: MTD device structure + * @offs: offset relative to mtd start */ static int nand_block_isbad(struct mtd_info *mtd, loff_t offs) { - /* Check for invalid offset */ - if (offs > mtd->size) - return -EINVAL; - return nand_block_checkbad(mtd, offs, 1, 0); }

/** * nand_block_markbad - [MTD Interface] Mark block at the given offset as bad - * @mtd: MTD device structure - * @ofs: offset relative to mtd start + * @mtd: MTD device structure + * @ofs: offset relative to mtd start */ static int nand_block_markbad(struct mtd_info *mtd, loff_t ofs) { @@ -2434,7 +2444,7 @@ static int nand_block_markbad(struct mtd_info *mtd, loff_t ofs)

ret = nand_block_isbad(mtd, ofs); if (ret) { - /* If it was bad already, return success and do nothing. */ + /* If it was bad already, return success and do nothing */ if (ret > 0) return 0; return ret; @@ -2443,9 +2453,51 @@ static int nand_block_markbad(struct mtd_info *mtd, loff_t ofs) return chip->block_markbad(mtd, ofs); }

-/* - * Set default functions + /** + * nand_onfi_set_features- [REPLACEABLE] set features for ONFI nand + * @mtd: MTD device structure + * @chip: nand chip info structure + * @addr: feature address. + * @subfeature_param: the subfeature parameters, a four bytes array. */ +static int nand_onfi_set_features(struct mtd_info *mtd, struct nand_chip *chip, + int addr, uint8_t *subfeature_param) +{ + int status; + + if (!chip->onfi_version) + return -EINVAL; + + chip->cmdfunc(mtd, NAND_CMD_SET_FEATURES, addr, -1); + chip->write_buf(mtd, subfeature_param, ONFI_SUBFEATURE_PARAM_LEN); + status = chip->waitfunc(mtd, chip); + if (status & NAND_STATUS_FAIL) + return -EIO; + return 0; +} + +/** + * nand_onfi_get_features- [REPLACEABLE] get features for ONFI nand + * @mtd: MTD device structure + * @chip: nand chip info structure + * @addr: feature address. + * @subfeature_param: the subfeature parameters, a four bytes array. + */ +static int nand_onfi_get_features(struct mtd_info *mtd, struct nand_chip *chip, + int addr, uint8_t *subfeature_param) +{ + if (!chip->onfi_version) + return -EINVAL; + + /* clear the sub feature parameters */ + memset(subfeature_param, 0, ONFI_SUBFEATURE_PARAM_LEN); + + chip->cmdfunc(mtd, NAND_CMD_GET_FEATURES, addr, -1); + chip->read_buf(mtd, subfeature_param, ONFI_SUBFEATURE_PARAM_LEN); + return 0; +} + +/* Set default functions */ static void nand_set_defaults(struct nand_chip *chip, int busw) { /* check for proper chip_delay setup, set 20us if not */ @@ -2483,23 +2535,21 @@ static void nand_set_defaults(struct nand_chip *chip, int busw) }

#ifdef CONFIG_SYS_NAND_ONFI_DETECTION -/* - * sanitize ONFI strings so we can safely print them - */ +/* Sanitize ONFI strings so we can safely print them */ static void sanitize_string(char *s, size_t len) { ssize_t i;

- /* null terminate */ + /* Null terminate */ s[len - 1] = 0;

- /* remove non printable chars */ + /* Remove non printable chars */ for (i = 0; i < len - 1; i++) { if (s[i] < ' ' || s[i] > 127) s[i] = '?'; }

- /* remove trailing spaces */ + /* Remove trailing spaces */ strim(s); }

@@ -2516,7 +2566,7 @@ static u16 onfi_crc16(u16 crc, u8 const *p, size_t len) }

/* - * Check if the NAND chip is ONFI compliant, returns 1 if it is, 0 otherwise + * Check if the NAND chip is ONFI compliant, returns 1 if it is, 0 otherwise. */ static int nand_flash_detect_onfi(struct mtd_info *mtd, struct nand_chip *chip, int *busw) @@ -2525,20 +2575,18 @@ static int nand_flash_detect_onfi(struct mtd_info *mtd, struct nand_chip *chip, int i; int val;

- /* try ONFI for unknow chip or LP */ + /* Try ONFI for unknown chip or LP */ chip->cmdfunc(mtd, NAND_CMD_READID, 0x20, -1); if (chip->read_byte(mtd) != 'O' || chip->read_byte(mtd) != 'N' || chip->read_byte(mtd) != 'F' || chip->read_byte(mtd) != 'I') return 0;

- MTDDEBUG(MTD_DEBUG_LEVEL0, "ONFI flash detected\n"); chip->cmdfunc(mtd, NAND_CMD_PARAM, 0, -1); for (i = 0; i < 3; i++) { chip->read_buf(mtd, (uint8_t *)p, sizeof(*p)); if (onfi_crc16(ONFI_CRC_BASE, (uint8_t *)p, 254) == le16_to_cpu(p->crc)) { - MTDDEBUG(MTD_DEBUG_LEVEL0, - "ONFI param page %d valid\n", i); + pr_info("ONFI param page %d valid\n", i); break; } } @@ -2546,7 +2594,7 @@ static int nand_flash_detect_onfi(struct mtd_info *mtd, struct nand_chip *chip, if (i == 3) return 0;

- /* check version */ + /* Check version */ val = le16_to_cpu(p->revision); if (val & (1 << 5)) chip->onfi_version = 23; @@ -2562,8 +2610,7 @@ static int nand_flash_detect_onfi(struct mtd_info *mtd, struct nand_chip *chip, chip->onfi_version = 0;

if (!chip->onfi_version) { - printk(KERN_INFO "%s: unsupported ONFI version: %d\n", - __func__, val); + pr_info("%s: unsupported ONFI version: %d\n", __func__, val); return 0; }

@@ -2580,8 +2627,7 @@ static int nand_flash_detect_onfi(struct mtd_info *mtd, struct nand_chip *chip, if (le16_to_cpu(p->features) & 1) *busw = NAND_BUSWIDTH_16;

- chip->options |= NAND_NO_READRDY | NAND_NO_AUTOINCR; - + pr_info("ONFI flash detected\n"); return 1; } #else @@ -2594,7 +2640,248 @@ static inline int nand_flash_detect_onfi(struct mtd_info *mtd, #endif

/* - * Get the flash and manufacturer id and lookup if the type is supported + * nand_id_has_period - Check if an ID string has a given wraparound period + * @id_data: the ID string + * @arrlen: the length of the @id_data array + * @period: the period of repitition + * + * Check if an ID string is repeated within a given sequence of bytes at + * specific repetition interval period (e.g., {0x20,0x01,0x7F,0x20} has a + * period of 2). This is a helper function for nand_id_len(). Returns non-zero + * if the repetition has a period of @period; otherwise, returns zero. + */ +static int nand_id_has_period(u8 *id_data, int arrlen, int period) +{ + int i, j; + for (i = 0; i < period; i++) + for (j = i + period; j < arrlen; j += period) + if (id_data[i] != id_data[j]) + return 0; + return 1; +} + +/* + * nand_id_len - Get the length of an ID string returned by CMD_READID + * @id_data: the ID string + * @arrlen: the length of the @id_data array + + * Returns the length of the ID string, according to known wraparound/trailing + * zero patterns. If no pattern exists, returns the length of the array. + */ +static int nand_id_len(u8 *id_data, int arrlen) +{ + int last_nonzero, period; + + /* Find last non-zero byte */ + for (last_nonzero = arrlen - 1; last_nonzero >= 0; last_nonzero--) + if (id_data[last_nonzero]) + break; + + /* All zeros */ + if (last_nonzero < 0) + return 0; + + /* Calculate wraparound period */ + for (period = 1; period < arrlen; period++) + if (nand_id_has_period(id_data, arrlen, period)) + break; + + /* There's a repeated pattern */ + if (period < arrlen) + return period; + + /* There are trailing zeros */ + if (last_nonzero < arrlen - 1) + return last_nonzero + 1; + + /* No pattern detected */ + return arrlen; +} + +/* + * Many new NAND share similar device ID codes, which represent the size of the + * chip. The rest of the parameters must be decoded according to generic or + * manufacturer-specific "extended ID" decoding patterns. + */ +static void nand_decode_ext_id(struct mtd_info *mtd, struct nand_chip *chip, + u8 id_data[8], int *busw) +{ + int extid, id_len; + /* The 3rd id byte holds MLC / multichip data */ + chip->cellinfo = id_data[2]; + /* The 4th id byte is the important one */ + extid = id_data[3]; + + id_len = nand_id_len(id_data, 8); + + /* + * Field definitions are in the following datasheets: + * Old style (4,5 byte ID): Samsung K9GAG08U0M (p.32) + * New Samsung (6 byte ID): Samsung K9GAG08U0F (p.44) + * Hynix MLC (6 byte ID): Hynix H27UBG8T2B (p.22) + * + * Check for ID length, non-zero 6th byte, cell type, and Hynix/Samsung + * ID to decide what to do. + */ + if (id_len == 6 && id_data[0] == NAND_MFR_SAMSUNG && + (chip->cellinfo & NAND_CI_CELLTYPE_MSK) && + id_data[5] != 0x00) { + /* Calc pagesize */ + mtd->writesize = 2048 << (extid & 0x03); + extid >>= 2; + /* Calc oobsize */ + switch (((extid >> 2) & 0x04) | (extid & 0x03)) { + case 1: + mtd->oobsize = 128; + break; + case 2: + mtd->oobsize = 218; + break; + case 3: + mtd->oobsize = 400; + break; + case 4: + mtd->oobsize = 436; + break; + case 5: + mtd->oobsize = 512; + break; + case 6: + default: /* Other cases are "reserved" (unknown) */ + mtd->oobsize = 640; + break; + } + extid >>= 2; + /* Calc blocksize */ + mtd->erasesize = (128 * 1024) << + (((extid >> 1) & 0x04) | (extid & 0x03)); + *busw = 0; + } else if (id_len == 6 && id_data[0] == NAND_MFR_HYNIX && + (chip->cellinfo & NAND_CI_CELLTYPE_MSK)) { + unsigned int tmp; + + /* Calc pagesize */ + mtd->writesize = 2048 << (extid & 0x03); + extid >>= 2; + /* Calc oobsize */ + switch (((extid >> 2) & 0x04) | (extid & 0x03)) { + case 0: + mtd->oobsize = 128; + break; + case 1: + mtd->oobsize = 224; + break; + case 2: + mtd->oobsize = 448; + break; + case 3: + mtd->oobsize = 64; + break; + case 4: + mtd->oobsize = 32; + break; + case 5: + mtd->oobsize = 16; + break; + default: + mtd->oobsize = 640; + break; + } + extid >>= 2; + /* Calc blocksize */ + tmp = ((extid >> 1) & 0x04) | (extid & 0x03); + if (tmp < 0x03) + mtd->erasesize = (128 * 1024) << tmp; + else if (tmp == 0x03) + mtd->erasesize = 768 * 1024; + else + mtd->erasesize = (64 * 1024) << tmp; + *busw = 0; + } else { + /* Calc pagesize */ + mtd->writesize = 1024 << (extid & 0x03); + extid >>= 2; + /* Calc oobsize */ + mtd->oobsize = (8 << (extid & 0x01)) * + (mtd->writesize >> 9); + extid >>= 2; + /* Calc blocksize. Blocksize is multiples of 64KiB */ + mtd->erasesize = (64 * 1024) << (extid & 0x03); + extid >>= 2; + /* Get buswidth information */ + *busw = (extid & 0x01) ? NAND_BUSWIDTH_16 : 0; + } +} + + /* + * Old devices have chip data hardcoded in the device ID table. nand_decode_id + * decodes a matching ID table entry and assigns the MTD size parameters for + * the chip. + */ +static void nand_decode_id(struct mtd_info *mtd, struct nand_chip *chip, + const struct nand_flash_dev *type, u8 id_data[8], + int *busw) +{ + int maf_id = id_data[0]; + + mtd->erasesize = type->erasesize; + mtd->writesize = type->pagesize; + mtd->oobsize = mtd->writesize / 32; + *busw = type->options & NAND_BUSWIDTH_16; + + /* + * Check for Spansion/AMD ID + repeating 5th, 6th byte since + * some Spansion chips have erasesize that conflicts with size + * listed in nand_ids table. + * Data sheet (5 byte ID): Spansion S30ML-P ORNAND (p.39) + */ + if (maf_id == NAND_MFR_AMD && id_data[4] != 0x00 && id_data[5] == 0x00 + && id_data[6] == 0x00 && id_data[7] == 0x00 + && mtd->writesize == 512) { + mtd->erasesize = 128 * 1024; + mtd->erasesize <<= ((id_data[3] & 0x03) << 1); + } +} + + /* + * Set the bad block marker/indicator (BBM/BBI) patterns according to some + * heuristic patterns using various detected parameters (e.g., manufacturer, + * page size, cell-type information). + */ +static void nand_decode_bbm_options(struct mtd_info *mtd, + struct nand_chip *chip, u8 id_data[8]) +{ + int maf_id = id_data[0]; + + /* Set the bad block position */ + if (mtd->writesize > 512 || (chip->options & NAND_BUSWIDTH_16)) + chip->badblockpos = NAND_LARGE_BADBLOCK_POS; + else + chip->badblockpos = NAND_SMALL_BADBLOCK_POS; + + /* + * Bad block marker is stored in the last page of each block on Samsung + * and Hynix MLC devices; stored in first two pages of each block on + * Micron devices with 2KiB pages and on SLC Samsung, Hynix, Toshiba, + * AMD/Spansion, and Macronix. All others scan only the first page. + */ + if ((chip->cellinfo & NAND_CI_CELLTYPE_MSK) && + (maf_id == NAND_MFR_SAMSUNG || + maf_id == NAND_MFR_HYNIX)) + chip->bbt_options |= NAND_BBT_SCANLASTPAGE; + else if ((!(chip->cellinfo & NAND_CI_CELLTYPE_MSK) && + (maf_id == NAND_MFR_SAMSUNG || + maf_id == NAND_MFR_HYNIX || + maf_id == NAND_MFR_TOSHIBA || + maf_id == NAND_MFR_AMD || + maf_id == NAND_MFR_MACRONIX)) || + (mtd->writesize == 2048 && + maf_id == NAND_MFR_MICRON)) + chip->bbt_options |= NAND_BBT_SCAN2NDPAGE; +} + +/* + * Get the flash and manufacturer id and lookup if the type is supported. */ static const struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd, struct nand_chip *chip, @@ -2605,14 +2892,13 @@ static const struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd, const char *name; int i, maf_idx; u8 id_data[8]; - int ret;

/* Select the device */ chip->select_chip(mtd, 0);

/* * Reset the chip, required by some chips (e.g. Micron MT29FxGxxxxx) - * after power-up + * after power-up. */ chip->cmdfunc(mtd, NAND_CMD_RESET, -1, -1);

@@ -2623,7 +2909,8 @@ static const struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd, *maf_id = chip->read_byte(mtd); *dev_id = chip->read_byte(mtd);

- /* Try again to make sure, as some systems the bus-hold or other + /* + * Try again to make sure, as some systems the bus-hold or other * interface concerns can cause random data which looks like a * possibly credible NAND flash to appear. If the two results do * not match, ignore the device completely. @@ -2631,13 +2918,14 @@ static const struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd,

chip->cmdfunc(mtd, NAND_CMD_READID, 0x00, -1);

- for (i = 0; i < 2; i++) + /* Read entire ID string */ + for (i = 0; i < 8; i++) id_data[i] = chip->read_byte(mtd);

if (id_data[0] != *maf_id || id_data[1] != *dev_id) { - printk(KERN_INFO "%s: second ID read did not match " - "%02x,%02x against %02x,%02x\n", __func__, - *maf_id, *dev_id, id_data[0], id_data[1]); + pr_info("%s: second ID read did not match " + "%02x,%02x against %02x,%02x\n", __func__, + *maf_id, *dev_id, id_data[0], id_data[1]); return ERR_PTR(-ENODEV); }

@@ -2651,18 +2939,10 @@ static const struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd, chip->onfi_version = 0; if (!type->name || !type->pagesize) { /* Check is chip is ONFI compliant */ - ret = nand_flash_detect_onfi(mtd, chip, &busw); - if (ret) + if (nand_flash_detect_onfi(mtd, chip, &busw)) goto ident_done; }

- chip->cmdfunc(mtd, NAND_CMD_READID, 0x00, -1); - - /* Read entire ID string */ - - for (i = 0; i < 8; i++) - id_data[i] = chip->read_byte(mtd); - if (!type->name) return ERR_PTR(-ENODEV);

@@ -2672,101 +2952,25 @@ static const struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd, chip->chipsize = (uint64_t)type->chipsize << 20;

if (!type->pagesize && chip->init_size) { - /* set the pagesize, oobsize, erasesize by the driver*/ + /* Set the pagesize, oobsize, erasesize by the driver */ busw = chip->init_size(mtd, chip, id_data); } else if (!type->pagesize) { - int extid; - /* The 3rd id byte holds MLC / multichip data */ - chip->cellinfo = id_data[2]; - /* The 4th id byte is the important one */ - extid = id_data[3]; - - /* - * Field definitions are in the following datasheets: - * Old style (4,5 byte ID): Samsung K9GAG08U0M (p.32) - * New style (6 byte ID): Samsung K9GBG08U0M (p.40) - * - * Check for wraparound + Samsung ID + nonzero 6th byte - * to decide what to do. - */ - if (id_data[0] == id_data[6] && id_data[1] == id_data[7] && - id_data[0] == NAND_MFR_SAMSUNG && - (chip->cellinfo & NAND_CI_CELLTYPE_MSK) && - id_data[5] != 0x00) { - /* Calc pagesize */ - mtd->writesize = 2048 << (extid & 0x03); - extid >>= 2; - /* Calc oobsize */ - switch (extid & 0x03) { - case 1: - mtd->oobsize = 128; - break; - case 2: - mtd->oobsize = 218; - break; - case 3: - mtd->oobsize = 400; - break; - default: - mtd->oobsize = 436; - break; - } - extid >>= 2; - /* Calc blocksize */ - mtd->erasesize = (128 * 1024) << - (((extid >> 1) & 0x04) | (extid & 0x03)); - busw = 0; - } else { - /* Calc pagesize */ - mtd->writesize = 1024 << (extid & 0x03); - extid >>= 2; - /* Calc oobsize */ - mtd->oobsize = (8 << (extid & 0x01)) * - (mtd->writesize >> 9); - extid >>= 2; - /* Calc blocksize. Blocksize is multiples of 64KiB */ - mtd->erasesize = (64 * 1024) << (extid & 0x03); - extid >>= 2; - /* Get buswidth information */ - busw = (extid & 0x01) ? NAND_BUSWIDTH_16 : 0; - } + /* Decode parameters from extended ID */ + nand_decode_ext_id(mtd, chip, id_data, &busw); } else { - /* - * Old devices have chip data hardcoded in the device id table - */ - mtd->erasesize = type->erasesize; - mtd->writesize = type->pagesize; - mtd->oobsize = mtd->writesize / 32; - busw = type->options & NAND_BUSWIDTH_16; - - /* - * Check for Spansion/AMD ID + repeating 5th, 6th byte since - * some Spansion chips have erasesize that conflicts with size - * listed in nand_ids table - * Data sheet (5 byte ID): Spansion S30ML-P ORNAND (p.39) - */ - if (*maf_id == NAND_MFR_AMD && id_data[4] != 0x00 && - id_data[5] == 0x00 && id_data[6] == 0x00 && - id_data[7] == 0x00 && mtd->writesize == 512) { - mtd->erasesize = 128 * 1024; - mtd->erasesize <<= ((id_data[3] & 0x03) << 1); - } + nand_decode_id(mtd, chip, type, id_data, &busw); } /* Get chip options, preserve non chip based options */ chip->options |= type->options;

- /* Check if chip is a not a samsung device. Do not clear the - * options for chips which are not having an extended id. + /* + * Check if chip is not a Samsung device. Do not clear the + * options for chips which do not have an extended id. */ if (*maf_id != NAND_MFR_SAMSUNG && !type->pagesize) chip->options &= ~NAND_SAMSUNG_LP_OPTIONS; ident_done:

- /* - * Set chip as a default. Board drivers can override it, if necessary - */ - chip->options |= NAND_NO_AUTOINCR; - /* Try to identify manufacturer */ for (maf_idx = 0; nand_manuf_ids[maf_idx].id != 0x0; maf_idx++) { if (nand_manuf_ids[maf_idx].id == *maf_id) @@ -2775,21 +2979,23 @@ ident_done:

/* * Check, if buswidth is correct. Hardware drivers should set - * chip correct ! + * chip correct! */ if (busw != (chip->options & NAND_BUSWIDTH_16)) { - printk(KERN_INFO "NAND device: Manufacturer ID:" - " 0x%02x, Chip ID: 0x%02x (%s %s)\n", *maf_id, - *dev_id, nand_manuf_ids[maf_idx].name, mtd->name); - printk(KERN_WARNING "NAND bus width %d instead %d bit\n", - (chip->options & NAND_BUSWIDTH_16) ? 16 : 8, - busw ? 16 : 8); + pr_info("NAND device: Manufacturer ID:" + " 0x%02x, Chip ID: 0x%02x (%s %s)\n", *maf_id, + *dev_id, nand_manuf_ids[maf_idx].name, mtd->name); + pr_warn("NAND bus width %d instead %d bit\n", + (chip->options & NAND_BUSWIDTH_16) ? 16 : 8, + busw ? 16 : 8); return ERR_PTR(-EINVAL); }

+ nand_decode_bbm_options(mtd, chip, id_data); + /* Calculate the address shift from the page size */ chip->page_shift = ffs(mtd->writesize) - 1; - /* Convert chipsize to number of pages per chip -1. */ + /* Convert chipsize to number of pages per chip -1 */ chip->pagemask = (chip->chipsize >> chip->page_shift) - 1;

chip->bbt_erase_shift = chip->phys_erase_shift = @@ -2803,73 +3009,38 @@ ident_done:

chip->badblockbits = 8;

- /* Set the bad block position */ - if (mtd->writesize > 512 || (busw & NAND_BUSWIDTH_16)) - chip->badblockpos = NAND_LARGE_BADBLOCK_POS; - else - chip->badblockpos = NAND_SMALL_BADBLOCK_POS; - - /* - * Bad block marker is stored in the last page of each block - * on Samsung and Hynix MLC devices; stored in first two pages - * of each block on Micron devices with 2KiB pages and on - * SLC Samsung, Hynix, Toshiba and AMD/Spansion. All others scan - * only the first page. - */ - if ((chip->cellinfo & NAND_CI_CELLTYPE_MSK) && - (*maf_id == NAND_MFR_SAMSUNG || - *maf_id == NAND_MFR_HYNIX)) - chip->options |= NAND_BBT_SCANLASTPAGE; - else if ((!(chip->cellinfo & NAND_CI_CELLTYPE_MSK) && - (*maf_id == NAND_MFR_SAMSUNG || - *maf_id == NAND_MFR_HYNIX || - *maf_id == NAND_MFR_TOSHIBA || - *maf_id == NAND_MFR_AMD)) || - (mtd->writesize == 2048 && - *maf_id == NAND_MFR_MICRON)) - chip->options |= NAND_BBT_SCAN2NDPAGE; - - /* - * Numonyx/ST 2K pages, x8 bus use BOTH byte 1 and 6 - */ - if (!(busw & NAND_BUSWIDTH_16) && - *maf_id == NAND_MFR_STMICRO && - mtd->writesize == 2048) { - chip->options |= NAND_BBT_SCANBYTE1AND6; - chip->badblockpos = 0; - } - /* Check for AND chips with 4 page planes */ if (chip->options & NAND_4PAGE_ARRAY) chip->erase_cmd = multi_erase_cmd; else chip->erase_cmd = single_erase_cmd;

- /* Do not replace user supplied command function ! */ + /* Do not replace user supplied command function! */ if (mtd->writesize > 512 && chip->cmdfunc == nand_command) chip->cmdfunc = nand_command_lp;

- /* TODO onfi flash name */ name = type->name; #ifdef CONFIG_SYS_NAND_ONFI_DETECTION if (chip->onfi_version) name = chip->onfi_params.model; #endif - MTDDEBUG(MTD_DEBUG_LEVEL0, "NAND device: Manufacturer ID:" - " 0x%02x, Chip ID: 0x%02x (%s %s)\n", *maf_id, *dev_id, - nand_manuf_ids[maf_idx].name, name); + pr_info("NAND device: Manufacturer ID: 0x%02x, Chip ID: 0x%02x (%s %s)," + " page size: %d, OOB size: %d\n", + *maf_id, *dev_id, nand_manuf_ids[maf_idx].name, + name, + mtd->writesize, mtd->oobsize);

return type; }

/** * nand_scan_ident - [NAND Interface] Scan for the NAND device - * @mtd: MTD device structure - * @maxchips: Number of chips to scan for - * @table: Alternative NAND ID table + * @mtd: MTD device structure + * @maxchips: number of chips to scan for + * @table: alternative NAND ID table * - * This is the first phase of the normal nand_scan() function. It - * reads the flash ID and sets up MTD fields accordingly. + * This is the first phase of the normal nand_scan() function. It reads the + * flash ID and sets up MTD fields accordingly. * * The mtd->owner field must be set to the module of the caller. */ @@ -2891,7 +3062,7 @@ int nand_scan_ident(struct mtd_info *mtd, int maxchips,

if (IS_ERR(type)) { #ifndef CONFIG_SYS_NAND_QUIET_TEST - printk(KERN_WARNING "No NAND device found!!!\n"); + pr_warn("No NAND device found\n"); #endif chip->select_chip(mtd, -1); return PTR_ERR(type); @@ -2911,7 +3082,7 @@ int nand_scan_ident(struct mtd_info *mtd, int maxchips, } #ifdef DEBUG if (i > 1) - printk(KERN_INFO "%d NAND chips detected\n", i); + pr_info("%d NAND chips detected\n", i); #endif

/* Store the number of chips and calc total size for mtd */ @@ -2924,17 +3095,21 @@ int nand_scan_ident(struct mtd_info *mtd, int maxchips,

/** * nand_scan_tail - [NAND Interface] Scan for the NAND device - * @mtd: MTD device structure + * @mtd: MTD device structure * - * This is the second phase of the normal nand_scan() function. It - * fills out all the uninitialized function pointers with the defaults - * and scans for a bad block table if appropriate. + * This is the second phase of the normal nand_scan() function. It fills out + * all the uninitialized function pointers with the defaults and scans for a + * bad block table if appropriate. */ int nand_scan_tail(struct mtd_info *mtd) { int i; struct nand_chip *chip = mtd->priv;

+ /* New bad blocks should be marked in OOB, flash-based BBT, or both */ + BUG_ON((chip->bbt_options & NAND_BBT_NO_OOB_BBM) && + !(chip->bbt_options & NAND_BBT_USE_FLASH)); + if (!(chip->options & NAND_OWN_BUFFERS)) chip->buffers = memalign(ARCH_DMA_MINALIGN, sizeof(*chip->buffers)); @@ -2945,7 +3120,7 @@ int nand_scan_tail(struct mtd_info *mtd) chip->oob_poi = chip->buffers->databuf + mtd->writesize;

/* - * If no default placement scheme is given, select an appropriate one + * If no default placement scheme is given, select an appropriate one. */ if (!chip->ecc.layout && (chip->ecc.mode != NAND_ECC_SOFT_BCH)) { switch (mtd->oobsize) { @@ -2962,16 +3137,22 @@ int nand_scan_tail(struct mtd_info *mtd) chip->ecc.layout = &nand_oob_128; break; default: - printk(KERN_WARNING "No oob scheme defined for " - "oobsize %d\n", mtd->oobsize); + pr_warn("No oob scheme defined for oobsize %d\n", + mtd->oobsize); } }

if (!chip->write_page) chip->write_page = nand_write_page;

+ /* set for ONFI nand */ + if (!chip->onfi_set_features) + chip->onfi_set_features = nand_onfi_set_features; + if (!chip->onfi_get_features) + chip->onfi_get_features = nand_onfi_get_features; + /* - * check ECC mode, default to software if 3byte/512byte hardware ECC is + * Check ECC mode, default to software if 3byte/512byte hardware ECC is * selected and we have 256 byte pagesize fallback to software ECC */

@@ -2980,15 +3161,15 @@ int nand_scan_tail(struct mtd_info *mtd) /* Similar to NAND_ECC_HW, but a separate read_page handle */ if (!chip->ecc.calculate || !chip->ecc.correct || !chip->ecc.hwctl) { - printk(KERN_WARNING "No ECC functions supplied; " - "Hardware ECC not possible\n"); + pr_warn("No ECC functions supplied; " + "hardware ECC not possible\n"); BUG(); } if (!chip->ecc.read_page) chip->ecc.read_page = nand_read_page_hwecc_oob_first;

case NAND_ECC_HW: - /* Use standard hwecc read page function ? */ + /* Use standard hwecc read page function? */ if (!chip->ecc.read_page) chip->ecc.read_page = nand_read_page_hwecc; if (!chip->ecc.write_page) @@ -3009,11 +3190,11 @@ int nand_scan_tail(struct mtd_info *mtd) chip->ecc.read_page == nand_read_page_hwecc || !chip->ecc.write_page || chip->ecc.write_page == nand_write_page_hwecc)) { - printk(KERN_WARNING "No ECC functions supplied; " - "Hardware ECC not possible\n"); + pr_warn("No ECC functions supplied; " + "hardware ECC not possible\n"); BUG(); } - /* Use standard syndrome read/write page function ? */ + /* Use standard syndrome read/write page function? */ if (!chip->ecc.read_page) chip->ecc.read_page = nand_read_page_syndrome; if (!chip->ecc.write_page) @@ -3027,11 +3208,16 @@ int nand_scan_tail(struct mtd_info *mtd) if (!chip->ecc.write_oob) chip->ecc.write_oob = nand_write_oob_syndrome;

- if (mtd->writesize >= chip->ecc.size) + if (mtd->writesize >= chip->ecc.size) { + if (!chip->ecc.strength) { + pr_warn("Driver must set ecc.strength when using hardware ECC\n"); + BUG(); + } break; - printk(KERN_WARNING "%d byte HW ECC not possible on " - "%d byte page size, fallback to SW ECC\n", - chip->ecc.size, mtd->writesize); + } + pr_warn("%d byte HW ECC not possible on " + "%d byte page size, fallback to SW ECC\n", + chip->ecc.size, mtd->writesize); chip->ecc.mode = NAND_ECC_SOFT;

case NAND_ECC_SOFT: @@ -3051,7 +3237,7 @@ int nand_scan_tail(struct mtd_info *mtd)

case NAND_ECC_SOFT_BCH: if (!mtd_nand_has_bch()) { - printk(KERN_WARNING "CONFIG_MTD_ECC_BCH not enabled\n"); + pr_warn("CONFIG_MTD_ECC_BCH not enabled\n"); return -EINVAL; } chip->ecc.calculate = nand_bch_calculate_ecc; @@ -3066,8 +3252,8 @@ int nand_scan_tail(struct mtd_info *mtd) /* * Board driver should supply ecc.size and ecc.bytes values to * select how many bits are correctable; see nand_bch_init() - * for details. - * Otherwise, default to 4 bits for large page devices + * for details. Otherwise, default to 4 bits for large page + * devices. */ if (!chip->ecc.size && (mtd->oobsize >= 64)) { chip->ecc.size = 512; @@ -3078,13 +3264,14 @@ int nand_scan_tail(struct mtd_info *mtd) chip->ecc.bytes, &chip->ecc.layout); if (!chip->ecc.priv) - printk(KERN_WARNING "BCH ECC initialization failed!\n"); - + pr_warn("BCH ECC initialization failed!\n"); + chip->ecc.strength = + chip->ecc.bytes * 8 / fls(8 * chip->ecc.size); break;

case NAND_ECC_NONE: - printk(KERN_WARNING "NAND_ECC_NONE selected by board driver. " - "This is not recommended !!\n"); + pr_warn("NAND_ECC_NONE selected by board driver. " + "This is not recommended !!\n"); chip->ecc.read_page = nand_read_page_raw; chip->ecc.write_page = nand_write_page_raw; chip->ecc.read_oob = nand_read_oob_std; @@ -3096,14 +3283,19 @@ int nand_scan_tail(struct mtd_info *mtd) break;

default: - printk(KERN_WARNING "Invalid NAND_ECC_MODE %d\n", - chip->ecc.mode); + pr_warn("Invalid NAND_ECC_MODE %d\n", chip->ecc.mode); BUG(); }

+ /* For many systems, the standard OOB write also works for raw */ + if (!chip->ecc.read_oob_raw) + chip->ecc.read_oob_raw = chip->ecc.read_oob; + if (!chip->ecc.write_oob_raw) + chip->ecc.write_oob_raw = chip->ecc.write_oob; + /* * The number of bytes available for a client to place data into - * the out of band area + * the out of band area. */ chip->ecc.layout->oobavail = 0; for (i = 0; chip->ecc.layout->oobfree[i].length @@ -3114,19 +3306,16 @@ int nand_scan_tail(struct mtd_info *mtd)

/* * Set the number of read / write steps for one page depending on ECC - * mode + * mode. */ chip->ecc.steps = mtd->writesize / chip->ecc.size; if (chip->ecc.steps * chip->ecc.size != mtd->writesize) { - printk(KERN_WARNING "Invalid ecc parameters\n"); + pr_warn("Invalid ECC parameters\n"); BUG(); } chip->ecc.total = chip->ecc.steps * chip->ecc.bytes;

- /* - * Allow subpage writes up to ecc.steps. Not possible for MLC - * FLASH. - */ + /* Allow subpage writes up to ecc.steps. Not possible for MLC flash */ if (!(chip->options & NAND_NO_SUBPAGE_WRITE) && !(chip->cellinfo & NAND_CI_CELLTYPE_MSK)) { switch (chip->ecc.steps) { @@ -3159,21 +3348,29 @@ int nand_scan_tail(struct mtd_info *mtd) mtd->type = MTD_NANDFLASH; mtd->flags = (chip->options & NAND_ROM) ? MTD_CAP_ROM : MTD_CAP_NANDFLASH; - mtd->erase = nand_erase; - mtd->point = NULL; - mtd->unpoint = NULL; - mtd->read = nand_read; - mtd->write = nand_write; - mtd->read_oob = nand_read_oob; - mtd->write_oob = nand_write_oob; - mtd->sync = nand_sync; - mtd->lock = NULL; - mtd->unlock = NULL; - mtd->block_isbad = nand_block_isbad; - mtd->block_markbad = nand_block_markbad; - - /* propagate ecc.layout to mtd_info */ + mtd->_erase = nand_erase; + mtd->_point = NULL; + mtd->_unpoint = NULL; + mtd->_read = nand_read; + mtd->_write = nand_write; + mtd->_read_oob = nand_read_oob; + mtd->_write_oob = nand_write_oob; + mtd->_sync = nand_sync; + mtd->_lock = NULL; + mtd->_unlock = NULL; + mtd->_block_isbad = nand_block_isbad; + mtd->_block_markbad = nand_block_markbad; + + /* propagate ecc info to mtd_info */ mtd->ecclayout = chip->ecc.layout; + mtd->ecc_strength = chip->ecc.strength; + /* + * Initialize bitflip_threshold to its default prior scan_bbt() call. + * scan_bbt() might invoke mtd_read(), thus bitflip_threshold must be + * properly set. + */ + if (!mtd->bitflip_threshold) + mtd->bitflip_threshold = mtd->ecc_strength;

/* Check, if we should skip the bad block table scan */ if (chip->options & NAND_SKIP_BBTSCAN) @@ -3184,15 +3381,13 @@ int nand_scan_tail(struct mtd_info *mtd)

/** * nand_scan - [NAND Interface] Scan for the NAND device - * @mtd: MTD device structure - * @maxchips: Number of chips to scan for - * - * This fills out all the uninitialized function pointers - * with the defaults. - * The flash ID is read and the mtd/chip structures are - * filled with the appropriate values. - * The mtd->owner field must be set to the module of the caller + * @mtd: MTD device structure + * @maxchips: number of chips to scan for * + * This fills out all the uninitialized function pointers with the defaults. + * The flash ID is read and the mtd/chip structures are filled with the + * appropriate values. The mtd->owner field must be set to the module of the + * caller. */ int nand_scan(struct mtd_info *mtd, int maxchips) { @@ -3206,8 +3401,8 @@ int nand_scan(struct mtd_info *mtd, int maxchips)

/** * nand_release - [NAND Interface] Free resources held by the NAND device - * @mtd: MTD device structure -*/ + * @mtd: MTD device structure + */ void nand_release(struct mtd_info *mtd) { struct nand_chip *chip = mtd->priv; diff --git a/drivers/mtd/nand/nand_bbt.c b/drivers/mtd/nand/nand_bbt.c index 74a7061..8ef5845 100644 --- a/drivers/mtd/nand/nand_bbt.c +++ b/drivers/mtd/nand/nand_bbt.c @@ -4,7 +4,7 @@ * Overview: * Bad block table support for the NAND driver * - * Copyright (C) 2004 Thomas Gleixner (tglx@linutronix.de) + * Copyright © 2004 Thomas Gleixner (tglx@linutronix.de) * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as @@ -14,7 +14,7 @@ * * When nand_scan_bbt is called, then it tries to find the bad block table * depending on the options in the BBT descriptor(s). If no flash based BBT - * (NAND_USE_FLASH_BBT) is specified then the device is scanned for factory + * (NAND_BBT_USE_FLASH) is specified then the device is scanned for factory * marked good / bad blocks. This information is used to create a memory BBT. * Once a new bad block is discovered then the "factory" information is updated * on the device. @@ -22,7 +22,7 @@ * BBT on flash. If a BBT is found then the contents are read and the memory * based BBT is created. If a mirrored BBT is selected then the mirror is * searched too and the versions are compared. If the mirror has a greater - * version number than the mirror BBT is used to build the memory based BBT. + * version number, then the mirror BBT is used to build the memory based BBT. * If the tables are not versioned, then we "or" the bad block information. * If one of the BBTs is out of date or does not exist it is (re)created. * If no BBT exists at all then the device is scanned for factory marked @@ -36,9 +36,9 @@ * The table is marked in the OOB area with an ident pattern and a version * number which indicates which of both tables is more up to date. If the NAND * controller needs the complete OOB area for the ECC information then the - * option NAND_USE_FLASH_BBT_NO_OOB should be used: it moves the ident pattern - * and the version byte into the data area and the OOB area will remain - * untouched. + * option NAND_BBT_NO_OOB should be used (along with NAND_BBT_USE_FLASH, of + * course): it moves the ident pattern and the version byte into the data area + * and the OOB area will remain untouched. * * The table uses 2 bits per block * 11b: block is good @@ -63,126 +63,81 @@ #include <malloc.h> #include <linux/compat.h> #include <linux/mtd/mtd.h> +#include <linux/mtd/bbm.h> #include <linux/mtd/nand.h> #include <linux/mtd/nand_ecc.h> #include <linux/bitops.h> +#include <linux/string.h>

#include <asm/errno.h>

static int check_pattern_no_oob(uint8_t *buf, struct nand_bbt_descr *td) { - int ret; - - ret = memcmp(buf, td->pattern, td->len); - if (!ret) - return ret; - return -1; + if (memcmp(buf, td->pattern, td->len)) + return -1; + return 0; }

/** * check_pattern - [GENERIC] check if a pattern is in the buffer - * @buf: the buffer to search - * @len: the length of buffer to search - * @paglen: the pagelength - * @td: search pattern descriptor - * - * Check for a pattern at the given place. Used to search bad block - * tables and good / bad block identifiers. - * If the SCAN_EMPTY option is set then check, if all bytes except the - * pattern area contain 0xff + * @buf: the buffer to search + * @len: the length of buffer to search + * @paglen: the pagelength + * @td: search pattern descriptor * -*/ + * Check for a pattern at the given place. Used to search bad block tables and + * good / bad block identifiers. If the SCAN_EMPTY option is set then check, if + * all bytes except the pattern area contain 0xff. + */ static int check_pattern(uint8_t *buf, int len, int paglen, struct nand_bbt_descr *td) { - int i, end = 0; + int end = 0; uint8_t *p = buf;

if (td->options & NAND_BBT_NO_OOB) return check_pattern_no_oob(buf, td);

end = paglen + td->offs; - if (td->options & NAND_BBT_SCANEMPTY) { - for (i = 0; i < end; i++) { - if (p[i] != 0xff) - return -1; - } - } + if (td->options & NAND_BBT_SCANEMPTY) + if (memchr_inv(p, 0xff, end)) + return -1; p += end;

/* Compare the pattern */ - for (i = 0; i < td->len; i++) { - if (p[i] != td->pattern[i]) - return -1; - } - - /* Check both positions 1 and 6 for pattern? */ - if (td->options & NAND_BBT_SCANBYTE1AND6) { - if (td->options & NAND_BBT_SCANEMPTY) { - p += td->len; - end += NAND_SMALL_BADBLOCK_POS - td->offs; - /* Check region between positions 1 and 6 */ - for (i = 0; i < NAND_SMALL_BADBLOCK_POS - td->offs - td->len; - i++) { - if (*p++ != 0xff) - return -1; - } - } - else { - p += NAND_SMALL_BADBLOCK_POS - td->offs; - } - /* Compare the pattern */ - for (i = 0; i < td->len; i++) { - if (p[i] != td->pattern[i]) - return -1; - } - } + if (memcmp(p, td->pattern, td->len)) + return -1;

if (td->options & NAND_BBT_SCANEMPTY) { p += td->len; end += td->len; - for (i = end; i < len; i++) { - if (*p++ != 0xff) - return -1; - } + if (memchr_inv(p, 0xff, len - end)) + return -1; } return 0; }

/** * check_short_pattern - [GENERIC] check if a pattern is in the buffer - * @buf: the buffer to search - * @td: search pattern descriptor + * @buf: the buffer to search + * @td: search pattern descriptor * - * Check for a pattern at the given place. Used to search bad block - * tables and good / bad block identifiers. Same as check_pattern, but - * no optional empty check - * -*/ + * Check for a pattern at the given place. Used to search bad block tables and + * good / bad block identifiers. Same as check_pattern, but no optional empty + * check. + */ static int check_short_pattern(uint8_t *buf, struct nand_bbt_descr *td) { - int i; - uint8_t *p = buf; - /* Compare the pattern */ - for (i = 0; i < td->len; i++) { - if (p[td->offs + i] != td->pattern[i]) - return -1; - } - /* Need to check location 1 AND 6? */ - if (td->options & NAND_BBT_SCANBYTE1AND6) { - for (i = 0; i < td->len; i++) { - if (p[NAND_SMALL_BADBLOCK_POS + i] != td->pattern[i]) - return -1; - } - } + if (memcmp(buf + td->offs, td->pattern, td->len)) + return -1; return 0; }

/** * add_marker_len - compute the length of the marker in data area - * @td: BBT descriptor used for computation + * @td: BBT descriptor used for computation * - * The length will be 0 if the markeris located in OOB area. + * The length will be 0 if the marker is located in OOB area. */ static u32 add_marker_len(struct nand_bbt_descr *td) { @@ -199,34 +154,33 @@ static u32 add_marker_len(struct nand_bbt_descr *td)

/** * read_bbt - [GENERIC] Read the bad block table starting from page - * @mtd: MTD device structure - * @buf: temporary buffer - * @page: the starting page - * @num: the number of bbt descriptors to read - * @td: the bbt describtion table - * @offs: offset in the memory table + * @mtd: MTD device structure + * @buf: temporary buffer + * @page: the starting page + * @num: the number of bbt descriptors to read + * @td: the bbt describtion table + * @offs: offset in the memory table * * Read the bad block table starting from page. - * */ static int read_bbt(struct mtd_info *mtd, uint8_t *buf, int page, int num, struct nand_bbt_descr *td, int offs) { - int res, i, j, act = 0; + int res, ret = 0, i, j, act = 0; struct nand_chip *this = mtd->priv; size_t retlen, len, totlen; loff_t from; int bits = td->options & NAND_BBT_NRBITS_MSK; - uint8_t msk = (uint8_t) ((1 << bits) - 1); + uint8_t msk = (uint8_t)((1 << bits) - 1); u32 marker_len; int reserved_block_code = td->reserved_block_code;

totlen = (num * bits) >> 3; marker_len = add_marker_len(td); - from = ((loff_t) page) << this->page_shift; + from = ((loff_t)page) << this->page_shift;

while (totlen) { - len = min(totlen, (size_t) (1 << this->bbt_erase_shift)); + len = min(totlen, (size_t)(1 << this->bbt_erase_shift)); if (marker_len) { /* * In case the BBT marker is not in the OOB area it @@ -236,13 +190,20 @@ static int read_bbt(struct mtd_info *mtd, uint8_t *buf, int page, int num, from += marker_len; marker_len = 0; } - res = mtd->read(mtd, from, len, &retlen, buf); + res = mtd_read(mtd, from, len, &retlen, buf); if (res < 0) { - if (retlen != len) { - printk(KERN_INFO "nand_bbt: Error reading bad block table\n"); + if (mtd_is_eccerr(res)) { + pr_info("nand_bbt: ECC error in BBT at " + "0x%012llx\n", from & ~mtd->writesize); + return res; + } else if (mtd_is_bitflip(res)) { + pr_info("nand_bbt: corrected error in BBT at " + "0x%012llx\n", from & ~mtd->writesize); + ret = res; + } else { + pr_info("nand_bbt: error reading BBT\n"); return res; } - printk(KERN_WARNING "nand_bbt: ECC error while reading bad block table\n"); }

/* Analyse data */ @@ -253,17 +214,16 @@ static int read_bbt(struct mtd_info *mtd, uint8_t *buf, int page, int num, if (tmp == msk) continue; if (reserved_block_code && (tmp == reserved_block_code)) { - printk(KERN_DEBUG "nand_read_bbt: Reserved block at 0x%012llx\n", - (loff_t)((offs << 2) + (act >> 1)) << this->bbt_erase_shift); + pr_info("nand_read_bbt: reserved block at 0x%012llx\n", + (loff_t)((offs << 2) + (act >> 1)) << this->bbt_erase_shift); this->bbt[offs + (act >> 3)] |= 0x2 << (act & 0x06); mtd->ecc_stats.bbtblocks++; continue; } - MTDDEBUG(MTD_DEBUG_LEVEL0, "nand_read_bbt: " \ - "Bad block at 0x%012llx\n", + pr_info("nand_read_bbt: Bad block at 0x%012llx\n", (loff_t)((offs << 2) + (act >> 1)) << this->bbt_erase_shift); - /* Factory marked bad or worn out ? */ + /* Factory marked bad or worn out? */ if (tmp == 0) this->bbt[offs + (act >> 3)] |= 0x3 << (act & 0x06); else @@ -274,20 +234,20 @@ static int read_bbt(struct mtd_info *mtd, uint8_t *buf, int page, int num, totlen -= len; from += len; } - return 0; + return ret; }

/** * read_abs_bbt - [GENERIC] Read the bad block table starting at a given page - * @mtd: MTD device structure - * @buf: temporary buffer - * @td: descriptor for the bad block table - * @chip: read the table for a specific chip, -1 read all chips. - * Applies only if NAND_BBT_PERCHIP option is set + * @mtd: MTD device structure + * @buf: temporary buffer + * @td: descriptor for the bad block table + * @chip: read the table for a specific chip, -1 read all chips; applies only if + * NAND_BBT_PERCHIP option is set * - * Read the bad block table for all chips starting at a given page - * We assume that the bbt bits are in consecutive order. -*/ + * Read the bad block table for all chips starting at a given page. We assume + * that the bbt bits are in consecutive order. + */ static int read_abs_bbt(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr *td, int chip) { struct nand_chip *this = mtd->priv; @@ -313,10 +273,8 @@ static int read_abs_bbt(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_desc return 0; }

-/* - * BBT marker is in the first page, no OOB. - */ -static int scan_read_raw_data(struct mtd_info *mtd, uint8_t *buf, loff_t offs, +/* BBT marker is in the first page, no OOB */ +static int scan_read_data(struct mtd_info *mtd, uint8_t *buf, loff_t offs, struct nand_bbt_descr *td) { size_t retlen; @@ -326,70 +284,73 @@ static int scan_read_raw_data(struct mtd_info *mtd, uint8_t *buf, loff_t offs, if (td->options & NAND_BBT_VERSION) len++;

- return mtd->read(mtd, offs, len, &retlen, buf); + return mtd_read(mtd, offs, len, &retlen, buf); }

-/* - * Scan read raw data from flash +/** + * scan_read_oob - [GENERIC] Scan data+OOB region to buffer + * @mtd: MTD device structure + * @buf: temporary buffer + * @offs: offset at which to scan + * @len: length of data region to read + * + * Scan read data from data+OOB. May traverse multiple pages, interleaving + * page,OOB,page,OOB,... in buf. Completes transfer and returns the "strongest" + * ECC condition (error or bitflip). May quit on the first (non-ECC) error. */ -static int scan_read_raw_oob(struct mtd_info *mtd, uint8_t *buf, loff_t offs, +static int scan_read_oob(struct mtd_info *mtd, uint8_t *buf, loff_t offs, size_t len) { struct mtd_oob_ops ops; - int res; + int res, ret = 0;

- ops.mode = MTD_OOB_RAW; + ops.mode = MTD_OPS_PLACE_OOB; ops.ooboffs = 0; ops.ooblen = mtd->oobsize;

- while (len > 0) { - if (len <= mtd->writesize) { - ops.oobbuf = buf + len; - ops.datbuf = buf; - ops.len = len; - return mtd->read_oob(mtd, offs, &ops); - } else { - ops.oobbuf = buf + mtd->writesize; - ops.datbuf = buf; - ops.len = mtd->writesize; - res = mtd->read_oob(mtd, offs, &ops); + ops.datbuf = buf; + ops.len = min(len, (size_t)mtd->writesize); + ops.oobbuf = buf + ops.len;

- if (res) + res = mtd_read_oob(mtd, offs, &ops); + if (res) { + if (!mtd_is_bitflip_or_eccerr(res)) return res; + else if (mtd_is_eccerr(res) || !ret) + ret = res; }

buf += mtd->oobsize + mtd->writesize; len -= mtd->writesize; + offs += mtd->writesize; } - return 0; + return ret; }

-static int scan_read_raw(struct mtd_info *mtd, uint8_t *buf, loff_t offs, +static int scan_read(struct mtd_info *mtd, uint8_t *buf, loff_t offs, size_t len, struct nand_bbt_descr *td) { if (td->options & NAND_BBT_NO_OOB) - return scan_read_raw_data(mtd, buf, offs, td); + return scan_read_data(mtd, buf, offs, td); else - return scan_read_raw_oob(mtd, buf, offs, len); + return scan_read_oob(mtd, buf, offs, len); }

-/* - * Scan write data with oob to flash - */ +/* Scan write data with oob to flash */ static int scan_write_bbt(struct mtd_info *mtd, loff_t offs, size_t len, uint8_t *buf, uint8_t *oob) { struct mtd_oob_ops ops;

- ops.mode = MTD_OOB_PLACE; + ops.mode = MTD_OPS_PLACE_OOB; ops.ooboffs = 0; ops.ooblen = mtd->oobsize; ops.datbuf = buf; ops.oobbuf = oob; ops.len = len;

- return mtd->write_oob(mtd, offs, &ops); + return mtd_write_oob(mtd, offs, &ops); }

static u32 bbt_get_ver_offs(struct mtd_info *mtd, struct nand_bbt_descr *td) @@ -403,65 +364,60 @@ static u32 bbt_get_ver_offs(struct mtd_info *mtd, struct nand_bbt_descr *td)

/** * read_abs_bbts - [GENERIC] Read the bad block table(s) for all chips starting at a given page - * @mtd: MTD device structure - * @buf: temporary buffer - * @td: descriptor for the bad block table - * @md: descriptor for the bad block table mirror - * - * Read the bad block table(s) for all chips starting at a given page - * We assume that the bbt bits are in consecutive order. + * @mtd: MTD device structure + * @buf: temporary buffer + * @td: descriptor for the bad block table + * @md: descriptor for the bad block table mirror * -*/ -static int read_abs_bbts(struct mtd_info *mtd, uint8_t *buf, - struct nand_bbt_descr *td, struct nand_bbt_descr *md) + * Read the bad block table(s) for all chips starting at a given page. We + * assume that the bbt bits are in consecutive order. + */ +static void read_abs_bbts(struct mtd_info *mtd, uint8_t *buf, + struct nand_bbt_descr *td, struct nand_bbt_descr *md) { struct nand_chip *this = mtd->priv;

/* Read the primary version, if available */ if (td->options & NAND_BBT_VERSION) { - scan_read_raw(mtd, buf, (loff_t)td->pages[0] << this->page_shift, + scan_read(mtd, buf, (loff_t)td->pages[0] << this->page_shift, mtd->writesize, td); td->version[0] = buf[bbt_get_ver_offs(mtd, td)]; - printk(KERN_DEBUG "Bad block table at page %d, version 0x%02X\n", - td->pages[0], td->version[0]); + pr_info("Bad block table at page %d, version 0x%02X\n", + td->pages[0], td->version[0]); }

/* Read the mirror version, if available */ if (md && (md->options & NAND_BBT_VERSION)) { - scan_read_raw(mtd, buf, (loff_t)md->pages[0] << this->page_shift, - mtd->writesize, td); + scan_read(mtd, buf, (loff_t)md->pages[0] << this->page_shift, + mtd->writesize, md); md->version[0] = buf[bbt_get_ver_offs(mtd, md)]; - printk(KERN_DEBUG "Bad block table at page %d, version 0x%02X\n", - md->pages[0], md->version[0]); + pr_info("Bad block table at page %d, version 0x%02X\n", + md->pages[0], md->version[0]); } - return 1; }

-/* - * Scan a given block full - */ +/* Scan a given block full */ static int scan_block_full(struct mtd_info *mtd, struct nand_bbt_descr *bd, loff_t offs, uint8_t *buf, size_t readlen, - int scanlen, int len) + int scanlen, int numpages) { int ret, j;

- ret = scan_read_raw_oob(mtd, buf, offs, readlen); - if (ret) + ret = scan_read_oob(mtd, buf, offs, readlen); + /* Ignore ECC errors when checking for BBM */ + if (ret && !mtd_is_bitflip_or_eccerr(ret)) return ret;

- for (j = 0; j < len; j++, buf += scanlen) { + for (j = 0; j < numpages; j++, buf += scanlen) { if (check_pattern(buf, scanlen, mtd->writesize, bd)) return 1; } return 0; }

-/* - * Scan a given block partially - */ +/* Scan a given block partially */ static int scan_block_fast(struct mtd_info *mtd, struct nand_bbt_descr *bd, - loff_t offs, uint8_t *buf, int len) + loff_t offs, uint8_t *buf, int numpages) { struct mtd_oob_ops ops; int j, ret; @@ -470,16 +426,16 @@ static int scan_block_fast(struct mtd_info *mtd, struct nand_bbt_descr *bd, ops.oobbuf = buf; ops.ooboffs = 0; ops.datbuf = NULL; - ops.mode = MTD_OOB_PLACE; + ops.mode = MTD_OPS_PLACE_OOB;

- for (j = 0; j < len; j++) { + for (j = 0; j < numpages; j++) { /* - * Read the full oob until read_oob is fixed to - * handle single byte reads for 16 bit - * buswidth + * Read the full oob until read_oob is fixed to handle single + * byte reads for 16 bit buswidth. */ - ret = mtd->read_oob(mtd, offs, &ops); - if (ret) + ret = mtd_read_oob(mtd, offs, &ops); + /* Ignore ECC errors when checking for BBM */ + if (ret && !mtd_is_bitflip_or_eccerr(ret)) return ret;

if (check_short_pattern(buf, bd)) @@ -492,32 +448,32 @@ static int scan_block_fast(struct mtd_info *mtd, struct nand_bbt_descr *bd,

/** * create_bbt - [GENERIC] Create a bad block table by scanning the device - * @mtd: MTD device structure - * @buf: temporary buffer - * @bd: descriptor for the good/bad block search pattern - * @chip: create the table for a specific chip, -1 read all chips. - * Applies only if NAND_BBT_PERCHIP option is set + * @mtd: MTD device structure + * @buf: temporary buffer + * @bd: descriptor for the good/bad block search pattern + * @chip: create the table for a specific chip, -1 read all chips; applies only + * if NAND_BBT_PERCHIP option is set * - * Create a bad block table by scanning the device - * for the given good/bad block identify pattern + * Create a bad block table by scanning the device for the given good/bad block + * identify pattern. */ static int create_bbt(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr *bd, int chip) { struct nand_chip *this = mtd->priv; - int i, numblocks, len, scanlen; + int i, numblocks, numpages, scanlen; int startblock; loff_t from; size_t readlen;

- MTDDEBUG(MTD_DEBUG_LEVEL0, "Scanning device for bad blocks\n"); + pr_info("Scanning device for bad blocks\n");

if (bd->options & NAND_BBT_SCANALLPAGES) - len = 1 << (this->bbt_erase_shift - this->page_shift); + numpages = 1 << (this->bbt_erase_shift - this->page_shift); else if (bd->options & NAND_BBT_SCAN2NDPAGE) - len = 2; + numpages = 2; else - len = 1; + numpages = 1;

if (!(bd->options & NAND_BBT_SCANEMPTY)) { /* We need only read few bytes from the OOB area */ @@ -526,18 +482,20 @@ static int create_bbt(struct mtd_info *mtd, uint8_t *buf, } else { /* Full page content should be read */ scanlen = mtd->writesize + mtd->oobsize; - readlen = len * mtd->writesize; + readlen = numpages * mtd->writesize; }

if (chip == -1) { - /* Note that numblocks is 2 * (real numblocks) here, see i+=2 - * below as it makes shifting and masking less painful */ + /* + * Note that numblocks is 2 * (real numblocks) here, see i+=2 + * below as it makes shifting and masking less painful + */ numblocks = mtd->size >> (this->bbt_erase_shift - 1); startblock = 0; from = 0; } else { if (chip >= this->numchips) { - printk(KERN_WARNING "create_bbt(): chipnr (%d) > available chips (%d)\n", + pr_warn("create_bbt(): chipnr (%d) > available chips (%d)\n", chip + 1, this->numchips); return -EINVAL; } @@ -547,8 +505,8 @@ static int create_bbt(struct mtd_info *mtd, uint8_t *buf, from = (loff_t)startblock << (this->bbt_erase_shift - 1); }

- if (this->options & NAND_BBT_SCANLASTPAGE) - from += mtd->erasesize - (mtd->writesize * len); + if (this->bbt_options & NAND_BBT_SCANLASTPAGE) + from += mtd->erasesize - (mtd->writesize * numpages);

for (i = startblock; i < numblocks;) { int ret; @@ -557,17 +515,16 @@ static int create_bbt(struct mtd_info *mtd, uint8_t *buf,

if (bd->options & NAND_BBT_SCANALLPAGES) ret = scan_block_full(mtd, bd, from, buf, readlen, - scanlen, len); + scanlen, numpages); else - ret = scan_block_fast(mtd, bd, from, buf, len); + ret = scan_block_fast(mtd, bd, from, buf, numpages);

if (ret < 0) return ret;

if (ret) { this->bbt[i >> 3] |= 0x03 << (i & 0x6); - MTDDEBUG(MTD_DEBUG_LEVEL0, - "Bad eraseblock %d at 0x%012llx\n", + pr_warn("Bad eraseblock %d at 0x%012llx\n", i >> 1, (unsigned long long)from); mtd->ecc_stats.badblocks++; } @@ -580,20 +537,18 @@ static int create_bbt(struct mtd_info *mtd, uint8_t *buf,

/** * search_bbt - [GENERIC] scan the device for a specific bad block table - * @mtd: MTD device structure - * @buf: temporary buffer - * @td: descriptor for the bad block table + * @mtd: MTD device structure + * @buf: temporary buffer + * @td: descriptor for the bad block table * - * Read the bad block table by searching for a given ident pattern. - * Search is preformed either from the beginning up or from the end of - * the device downwards. The search starts always at the start of a - * block. - * If the option NAND_BBT_PERCHIP is given, each chip is searched - * for a bbt, which contains the bad block information of this chip. - * This is necessary to provide support for certain DOC devices. + * Read the bad block table by searching for a given ident pattern. Search is + * preformed either from the beginning up or from the end of the device + * downwards. The search starts always at the start of a block. If the option + * NAND_BBT_PERCHIP is given, each chip is searched for a bbt, which contains + * the bad block information of this chip. This is necessary to provide support + * for certain DOC devices. * - * The bbt ident pattern resides in the oob area of the first page - * in a block. + * The bbt ident pattern resides in the oob area of the first page in a block. */ static int search_bbt(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr *td) { @@ -604,7 +559,7 @@ static int search_bbt(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr int bbtblocks; int blocktopage = this->bbt_erase_shift - this->page_shift;

- /* Search direction top -> down ? */ + /* Search direction top -> down? */ if (td->options & NAND_BBT_LASTBLOCK) { startblock = (mtd->size >> this->bbt_erase_shift) - 1; dir = -1; @@ -613,7 +568,7 @@ static int search_bbt(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr dir = 1; }

- /* Do we have a bbt per chip ? */ + /* Do we have a bbt per chip? */ if (td->options & NAND_BBT_PERCHIP) { chips = this->numchips; bbtblocks = this->chipsize >> this->bbt_erase_shift; @@ -634,7 +589,7 @@ static int search_bbt(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr loff_t offs = (loff_t)actblock << this->bbt_erase_shift;

/* Read first page */ - scan_read_raw(mtd, buf, offs, mtd->writesize, td); + scan_read(mtd, buf, offs, mtd->writesize, td); if (!check_pattern(buf, scanlen, mtd->writesize, td)) { td->pages[i] = actblock << blocktopage; if (td->options & NAND_BBT_VERSION) { @@ -649,10 +604,9 @@ static int search_bbt(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr /* Check, if we found a bbt for each requested chip */ for (i = 0; i < chips; i++) { if (td->pages[i] == -1) - printk(KERN_WARNING "Bad block table not found for chip %d\n", i); + pr_warn("Bad block table not found for chip %d\n", i); else - MTDDEBUG(MTD_DEBUG_LEVEL0, "Bad block table found " \ - "at page %d, version 0x%02X\n", td->pages[i], + pr_info("Bad block table found at page %d, version 0x%02X\n", td->pages[i], td->version[i]); } return 0; @@ -660,14 +614,16 @@ static int search_bbt(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr

/** * search_read_bbts - [GENERIC] scan the device for bad block table(s) - * @mtd: MTD device structure - * @buf: temporary buffer - * @td: descriptor for the bad block table - * @md: descriptor for the bad block table mirror + * @mtd: MTD device structure + * @buf: temporary buffer + * @td: descriptor for the bad block table + * @md: descriptor for the bad block table mirror * - * Search and read the bad block table(s) -*/ -static int search_read_bbts(struct mtd_info *mtd, uint8_t * buf, struct nand_bbt_descr *td, struct nand_bbt_descr *md) + * Search and read the bad block table(s). + */ +static void search_read_bbts(struct mtd_info *mtd, uint8_t *buf, + struct nand_bbt_descr *td, + struct nand_bbt_descr *md) { /* Search the primary table */ search_bbt(mtd, buf, td); @@ -675,23 +631,18 @@ static int search_read_bbts(struct mtd_info *mtd, uint8_t * buf, struct nand_bbt /* Search the mirror table */ if (md) search_bbt(mtd, buf, md); - - /* Force result check */ - return 1; }

/** * write_bbt - [GENERIC] (Re)write the bad block table + * @mtd: MTD device structure + * @buf: temporary buffer + * @td: descriptor for the bad block table + * @md: descriptor for the bad block table mirror + * @chipsel: selector for a specific chip, -1 for all * - * @mtd: MTD device structure - * @buf: temporary buffer - * @td: descriptor for the bad block table - * @md: descriptor for the bad block table mirror - * @chipsel: selector for a specific chip, -1 for all - * - * (Re)write the bad block table - * -*/ + * (Re)write the bad block table. + */ static int write_bbt(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr *td, struct nand_bbt_descr *md, int chipsel) @@ -710,14 +661,14 @@ static int write_bbt(struct mtd_info *mtd, uint8_t *buf, ops.ooblen = mtd->oobsize; ops.ooboffs = 0; ops.datbuf = NULL; - ops.mode = MTD_OOB_PLACE; + ops.mode = MTD_OPS_PLACE_OOB;

if (!rcode) rcode = 0xff; - /* Write bad block table per chip rather than per device ? */ + /* Write bad block table per chip rather than per device? */ if (td->options & NAND_BBT_PERCHIP) { numblocks = (int)(this->chipsize >> this->bbt_erase_shift); - /* Full device write or specific chip ? */ + /* Full device write or specific chip? */ if (chipsel == -1) { nrchips = this->numchips; } else { @@ -731,8 +682,8 @@ static int write_bbt(struct mtd_info *mtd, uint8_t *buf,

/* Loop through the chips */ for (; chip < nrchips; chip++) { - - /* There was already a version of the table, reuse the page + /* + * There was already a version of the table, reuse the page * This applies for absolute placement too, as we have the * page nr. in td->pages. */ @@ -741,8 +692,10 @@ static int write_bbt(struct mtd_info *mtd, uint8_t *buf, goto write; }

- /* Automatic placement of the bad block table */ - /* Search direction top -> down ? */ + /* + * Automatic placement of the bad block table. Search direction + * top -> down? + */ if (td->options & NAND_BBT_LASTBLOCK) { startblock = numblocks * (chip + 1) - 1; dir = -1; @@ -766,7 +719,7 @@ static int write_bbt(struct mtd_info *mtd, uint8_t *buf, if (!md || md->pages[chip] != page) goto write; } - printk(KERN_ERR "No space left to write bad block table\n"); + pr_err("No space left to write bad block table\n"); return -ENOSPC; write:

@@ -791,29 +744,27 @@ static int write_bbt(struct mtd_info *mtd, uint8_t *buf,

bbtoffs = chip * (numblocks >> 2);

- to = ((loff_t) page) << this->page_shift; + to = ((loff_t)page) << this->page_shift;

- /* Must we save the block contents ? */ + /* Must we save the block contents? */ if (td->options & NAND_BBT_SAVECONTENT) { /* Make it block aligned */ - to &= ~((loff_t) ((1 << this->bbt_erase_shift) - 1)); + to &= ~((loff_t)((1 << this->bbt_erase_shift) - 1)); len = 1 << this->bbt_erase_shift; - res = mtd->read(mtd, to, len, &retlen, buf); + res = mtd_read(mtd, to, len, &retlen, buf); if (res < 0) { if (retlen != len) { - printk(KERN_INFO "nand_bbt: Error " - "reading block for writing " - "the bad block table\n"); + pr_info("nand_bbt: error reading block " + "for writing the bad block table\n"); return res; } - printk(KERN_WARNING "nand_bbt: ECC error " - "while reading block for writing " - "bad block table\n"); + pr_warn("nand_bbt: ECC error while reading " + "block for writing bad block table\n"); } /* Read oob data */ ops.ooblen = (len >> this->page_shift) * mtd->oobsize; ops.oobbuf = &buf[len]; - res = mtd->read_oob(mtd, to + mtd->writesize, &ops); + res = mtd_read_oob(mtd, to + mtd->writesize, &ops); if (res < 0 || ops.oobretlen != ops.ooblen) goto outerr;

@@ -821,19 +772,19 @@ static int write_bbt(struct mtd_info *mtd, uint8_t *buf, pageoffs = page - (int)(to >> this->page_shift); offs = pageoffs << this->page_shift; /* Preset the bbt area with 0xff */ - memset(&buf[offs], 0xff, (size_t) (numblocks >> sft)); + memset(&buf[offs], 0xff, (size_t)(numblocks >> sft)); ooboffs = len + (pageoffs * mtd->oobsize);

} else if (td->options & NAND_BBT_NO_OOB) { ooboffs = 0; offs = td->len; - /* the version byte */ + /* The version byte */ if (td->options & NAND_BBT_VERSION) offs++; /* Calc length */ - len = (size_t) (numblocks >> sft); + len = (size_t)(numblocks >> sft); len += offs; - /* Make it page aligned ! */ + /* Make it page aligned! */ len = ALIGN(len, mtd->writesize); /* Preset the buffer with 0xff */ memset(buf, 0xff, len); @@ -841,8 +792,8 @@ static int write_bbt(struct mtd_info *mtd, uint8_t *buf, memcpy(buf, td->pattern, td->len); } else { /* Calc length */ - len = (size_t) (numblocks >> sft); - /* Make it page aligned ! */ + len = (size_t)(numblocks >> sft); + /* Make it page aligned! */ len = ALIGN(len, mtd->writesize); /* Preset the buffer with 0xff */ memset(buf, 0xff, len + @@ -856,13 +807,13 @@ static int write_bbt(struct mtd_info *mtd, uint8_t *buf, if (td->options & NAND_BBT_VERSION) buf[ooboffs + td->veroffs] = td->version[chip];

- /* walk through the memory table */ + /* Walk through the memory table */ for (i = 0; i < numblocks;) { uint8_t dat; dat = this->bbt[bbtoffs + (i >> 2)]; for (j = 0; j < 4; j++, i++) { int sftcnt = (i << (3 - sft)) & sftmsk; - /* Do not store the reserved bbt blocks ! */ + /* Do not store the reserved bbt blocks! */ buf[offs + (i >> sft)] &= ~(msk[dat & 0x03] << sftcnt); dat >>= 2; @@ -883,8 +834,8 @@ static int write_bbt(struct mtd_info *mtd, uint8_t *buf, if (res < 0) goto outerr;

- printk(KERN_DEBUG "Bad block table written to 0x%012llx, version " - "0x%02X\n", (unsigned long long)to, td->version[chip]); + pr_info("Bad block table written to 0x%012llx, version 0x%02X\n", + (unsigned long long)to, td->version[chip]);

/* Mark it as used */ td->pages[chip] = page; @@ -892,19 +843,18 @@ static int write_bbt(struct mtd_info *mtd, uint8_t *buf, return 0;

outerr: - printk(KERN_WARNING - "nand_bbt: Error while writing bad block table %d\n", res); + pr_warn("nand_bbt: error while writing bad block table %d\n", res); return res; }

/** * nand_memory_bbt - [GENERIC] create a memory based bad block table - * @mtd: MTD device structure - * @bd: descriptor for the good/bad block search pattern + * @mtd: MTD device structure + * @bd: descriptor for the good/bad block search pattern * - * The function creates a memory based bbt by scanning the device - * for manufacturer / software marked good / bad blocks -*/ + * The function creates a memory based bbt by scanning the device for + * manufacturer / software marked good / bad blocks. + */ static inline int nand_memory_bbt(struct mtd_info *mtd, struct nand_bbt_descr *bd) { struct nand_chip *this = mtd->priv; @@ -915,25 +865,24 @@ static inline int nand_memory_bbt(struct mtd_info *mtd, struct nand_bbt_descr *b

/** * check_create - [GENERIC] create and write bbt(s) if necessary - * @mtd: MTD device structure - * @buf: temporary buffer - * @bd: descriptor for the good/bad block search pattern + * @mtd: MTD device structure + * @buf: temporary buffer + * @bd: descriptor for the good/bad block search pattern * - * The function checks the results of the previous call to read_bbt - * and creates / updates the bbt(s) if necessary - * Creation is necessary if no bbt was found for the chip/device - * Update is necessary if one of the tables is missing or the - * version nr. of one table is less than the other -*/ + * The function checks the results of the previous call to read_bbt and creates + * / updates the bbt(s) if necessary. Creation is necessary if no bbt was found + * for the chip/device. Update is necessary if one of the tables is missing or + * the version nr. of one table is less than the other. + */ static int check_create(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr *bd) { - int i, chips, writeops, chipsel, res; + int i, chips, writeops, create, chipsel, res, res2; struct nand_chip *this = mtd->priv; struct nand_bbt_descr *td = this->bbt_td; struct nand_bbt_descr *md = this->bbt_md; struct nand_bbt_descr *rd, *rd2;

- /* Do we have a bbt per chip ? */ + /* Do we have a bbt per chip? */ if (td->options & NAND_BBT_PERCHIP) chips = this->numchips; else @@ -941,86 +890,98 @@ static int check_create(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_desc

for (i = 0; i < chips; i++) { writeops = 0; + create = 0; rd = NULL; rd2 = NULL; - /* Per chip or per device ? */ + res = res2 = 0; + /* Per chip or per device? */ chipsel = (td->options & NAND_BBT_PERCHIP) ? i : -1; - /* Mirrored table available ? */ + /* Mirrored table available? */ if (md) { if (td->pages[i] == -1 && md->pages[i] == -1) { + create = 1; writeops = 0x03; - goto create; - } - - if (td->pages[i] == -1) { + } else if (td->pages[i] == -1) { rd = md; - td->version[i] = md->version[i]; - writeops = 1; - goto writecheck; - } - - if (md->pages[i] == -1) { + writeops = 0x01; + } else if (md->pages[i] == -1) { rd = td; - md->version[i] = td->version[i]; - writeops = 2; - goto writecheck; - } - - if (td->version[i] == md->version[i]) { + writeops = 0x02; + } else if (td->version[i] == md->version[i]) { rd = td; if (!(td->options & NAND_BBT_VERSION)) rd2 = md; - goto writecheck; - } - - if (((int8_t) (td->version[i] - md->version[i])) > 0) { + } else if (((int8_t)(td->version[i] - md->version[i])) > 0) { rd = td; - md->version[i] = td->version[i]; - writeops = 2; + writeops = 0x02; } else { rd = md; - td->version[i] = md->version[i]; - writeops = 1; + writeops = 0x01; } - - goto writecheck; - } else { if (td->pages[i] == -1) { + create = 1; writeops = 0x01; - goto create; + } else { + rd = td; } - rd = td; - goto writecheck; } - create: - /* Create the bad block table by scanning the device ? */ - if (!(td->options & NAND_BBT_CREATE)) - continue;

- /* Create the table in memory by scanning the chip(s) */ - if (!(this->options & NAND_CREATE_EMPTY_BBT)) - create_bbt(mtd, buf, bd, chipsel); - - td->version[i] = 1; - if (md) - md->version[i] = 1; - writecheck: - /* read back first ? */ - if (rd) - read_abs_bbt(mtd, buf, rd, chipsel); - /* If they weren't versioned, read both. */ - if (rd2) - read_abs_bbt(mtd, buf, rd2, chipsel); - - /* Write the bad block table to the device ? */ + if (create) { + /* Create the bad block table by scanning the device? */ + if (!(td->options & NAND_BBT_CREATE)) + continue; + + /* Create the table in memory by scanning the chip(s) */ + if (!(this->bbt_options & NAND_BBT_CREATE_EMPTY)) + create_bbt(mtd, buf, bd, chipsel); + + td->version[i] = 1; + if (md) + md->version[i] = 1; + } + + /* Read back first? */ + if (rd) { + res = read_abs_bbt(mtd, buf, rd, chipsel); + if (mtd_is_eccerr(res)) { + /* Mark table as invalid */ + rd->pages[i] = -1; + rd->version[i] = 0; + i--; + continue; + } + } + /* If they weren't versioned, read both */ + if (rd2) { + res2 = read_abs_bbt(mtd, buf, rd2, chipsel); + if (mtd_is_eccerr(res2)) { + /* Mark table as invalid */ + rd2->pages[i] = -1; + rd2->version[i] = 0; + i--; + continue; + } + } + + /* Scrub the flash table(s)? */ + if (mtd_is_bitflip(res) || mtd_is_bitflip(res2)) + writeops = 0x03; + + /* Update version numbers before writing */ + if (md) { + td->version[i] = max(td->version[i], md->version[i]); + md->version[i] = td->version[i]; + } + + /* Write the bad block table to the device? */ if ((writeops & 0x01) && (td->options & NAND_BBT_WRITE)) { res = write_bbt(mtd, buf, td, md, chipsel); if (res < 0) return res; }

- /* Write the mirror bad block table to the device ? */ + /* Write the mirror bad block table to the device? */ if ((writeops & 0x02) && md && (md->options & NAND_BBT_WRITE)) { res = write_bbt(mtd, buf, md, td, chipsel); if (res < 0) @@ -1032,20 +993,19 @@ static int check_create(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_desc

/** * mark_bbt_regions - [GENERIC] mark the bad block table regions - * @mtd: MTD device structure - * @td: bad block table descriptor + * @mtd: MTD device structure + * @td: bad block table descriptor * - * The bad block table regions are marked as "bad" to prevent - * accidental erasures / writes. The regions are identified by - * the mark 0x02. -*/ + * The bad block table regions are marked as "bad" to prevent accidental + * erasures / writes. The regions are identified by the mark 0x02. + */ static void mark_bbt_region(struct mtd_info *mtd, struct nand_bbt_descr *td) { struct nand_chip *this = mtd->priv; int i, j, chips, block, nrblocks, update; uint8_t oldval, newval;

- /* Do we have a bbt per chip ? */ + /* Do we have a bbt per chip? */ if (td->options & NAND_BBT_PERCHIP) { chips = this->numchips; nrblocks = (int)(this->chipsize >> this->bbt_erase_shift); @@ -1082,9 +1042,11 @@ static void mark_bbt_region(struct mtd_info *mtd, struct nand_bbt_descr *td) update = 1; block += 2; } - /* If we want reserved blocks to be recorded to flash, and some - new ones have been marked, then we need to update the stored - bbts. This should only happen once. */ + /* + * If we want reserved blocks to be recorded to flash, and some + * new ones have been marked, then we need to update the stored + * bbts. This should only happen once. + */ if (update && td->reserved_block_code) nand_update_bbt(mtd, (loff_t)(block - 2) << (this->bbt_erase_shift - 1)); } @@ -1092,8 +1054,8 @@ static void mark_bbt_region(struct mtd_info *mtd, struct nand_bbt_descr *td)

/** * verify_bbt_descr - verify the bad block description - * @mtd: MTD device structure - * @bd: the table to verify + * @mtd: MTD device structure + * @bd: the table to verify * * This functions performs a few sanity checks on the bad block description * table. @@ -1111,16 +1073,16 @@ static void verify_bbt_descr(struct mtd_info *mtd, struct nand_bbt_descr *bd) pattern_len = bd->len; bits = bd->options & NAND_BBT_NRBITS_MSK;

- BUG_ON((this->options & NAND_USE_FLASH_BBT_NO_OOB) && - !(this->options & NAND_USE_FLASH_BBT)); + BUG_ON((this->bbt_options & NAND_BBT_NO_OOB) && + !(this->bbt_options & NAND_BBT_USE_FLASH)); BUG_ON(!bits);

if (bd->options & NAND_BBT_VERSION) pattern_len++;

if (bd->options & NAND_BBT_NO_OOB) { - BUG_ON(!(this->options & NAND_USE_FLASH_BBT)); - BUG_ON(!(this->options & NAND_USE_FLASH_BBT_NO_OOB)); + BUG_ON(!(this->bbt_options & NAND_BBT_USE_FLASH)); + BUG_ON(!(this->bbt_options & NAND_BBT_NO_OOB)); BUG_ON(bd->offs); if (bd->options & NAND_BBT_VERSION) BUG_ON(bd->veroffs != bd->len); @@ -1140,18 +1102,16 @@ static void verify_bbt_descr(struct mtd_info *mtd, struct nand_bbt_descr *bd)

/** * nand_scan_bbt - [NAND Interface] scan, find, read and maybe create bad block table(s) - * @mtd: MTD device structure - * @bd: descriptor for the good/bad block search pattern - * - * The function checks, if a bad block table(s) is/are already - * available. If not it scans the device for manufacturer - * marked good / bad blocks and writes the bad block table(s) to - * the selected place. + * @mtd: MTD device structure + * @bd: descriptor for the good/bad block search pattern * - * The bad block table memory is allocated here. It must be freed - * by calling the nand_free_bbt function. + * The function checks, if a bad block table(s) is/are already available. If + * not it scans the device for manufacturer marked good / bad blocks and writes + * the bad block table(s) to the selected place. * -*/ + * The bad block table memory is allocated here. It must be freed by calling + * the nand_free_bbt function. + */ int nand_scan_bbt(struct mtd_info *mtd, struct nand_bbt_descr *bd) { struct nand_chip *this = mtd->priv; @@ -1161,19 +1121,21 @@ int nand_scan_bbt(struct mtd_info *mtd, struct nand_bbt_descr *bd) struct nand_bbt_descr *md = this->bbt_md;

len = mtd->size >> (this->bbt_erase_shift + 2); - /* Allocate memory (2bit per block) and clear the memory bad block table */ + /* + * Allocate memory (2bit per block) and clear the memory bad block + * table. + */ this->bbt = kzalloc(len, GFP_KERNEL); - if (!this->bbt) { - printk(KERN_ERR "nand_scan_bbt: Out of memory\n"); + if (!this->bbt) return -ENOMEM; - }

- /* If no primary table decriptor is given, scan the device - * to build a memory based bad block table + /* + * If no primary table decriptor is given, scan the device to build a + * memory based bad block table. */ if (!td) { if ((res = nand_memory_bbt(mtd, bd))) { - printk(KERN_ERR "nand_bbt: Can't scan flash and build the RAM-based BBT\n"); + pr_err("nand_bbt: can't scan flash and build the RAM-based BBT\n"); kfree(this->bbt); this->bbt = NULL; } @@ -1187,22 +1149,20 @@ int nand_scan_bbt(struct mtd_info *mtd, struct nand_bbt_descr *bd) len += (len >> this->page_shift) * mtd->oobsize; buf = vmalloc(len); if (!buf) { - printk(KERN_ERR "nand_bbt: Out of memory\n"); kfree(this->bbt); this->bbt = NULL; return -ENOMEM; }

- /* Is the bbt at a given page ? */ + /* Is the bbt at a given page? */ if (td->options & NAND_BBT_ABSPAGE) { - res = read_abs_bbts(mtd, buf, td, md); + read_abs_bbts(mtd, buf, td, md); } else { /* Search the bad block table using a pattern in oob */ - res = search_read_bbts(mtd, buf, td, md); + search_read_bbts(mtd, buf, td, md); }

- if (res) - res = check_create(mtd, buf, bd); + res = check_create(mtd, buf, bd);

/* Prevent the bbt regions from erasing / writing */ mark_bbt_region(mtd, td); @@ -1215,15 +1175,15 @@ int nand_scan_bbt(struct mtd_info *mtd, struct nand_bbt_descr *bd)

/** * nand_update_bbt - [NAND Interface] update bad block table(s) - * @mtd: MTD device structure - * @offs: the offset of the newly marked block + * @mtd: MTD device structure + * @offs: the offset of the newly marked block * - * The function updates the bad block table(s) -*/ + * The function updates the bad block table(s). + */ int nand_update_bbt(struct mtd_info *mtd, loff_t offs) { struct nand_chip *this = mtd->priv; - int len, res = 0, writeops = 0; + int len, res = 0; int chip, chipsel; uint8_t *buf; struct nand_bbt_descr *td = this->bbt_td; @@ -1236,14 +1196,10 @@ int nand_update_bbt(struct mtd_info *mtd, loff_t offs) len = (1 << this->bbt_erase_shift); len += (len >> this->page_shift) * mtd->oobsize; buf = kmalloc(len, GFP_KERNEL); - if (!buf) { - printk(KERN_ERR "nand_update_bbt: Out of memory\n"); + if (!buf) return -ENOMEM; - }

- writeops = md != NULL ? 0x03 : 0x01; - - /* Do we have a bbt per chip ? */ + /* Do we have a bbt per chip? */ if (td->options & NAND_BBT_PERCHIP) { chip = (int)(offs >> this->chip_shift); chipsel = chip; @@ -1256,14 +1212,14 @@ int nand_update_bbt(struct mtd_info *mtd, loff_t offs) if (md) md->version[chip]++;

- /* Write the bad block table to the device ? */ - if ((writeops & 0x01) && (td->options & NAND_BBT_WRITE)) { + /* Write the bad block table to the device? */ + if (td->options & NAND_BBT_WRITE) { res = write_bbt(mtd, buf, td, md, chipsel); if (res < 0) goto out; } - /* Write the mirror bad block table to the device ? */ - if ((writeops & 0x02) && md && (md->options & NAND_BBT_WRITE)) { + /* Write the mirror bad block table to the device? */ + if (md && (md->options & NAND_BBT_WRITE)) { res = write_bbt(mtd, buf, md, td, chipsel); }

@@ -1272,8 +1228,10 @@ int nand_update_bbt(struct mtd_info *mtd, loff_t offs) return res; }

-/* Define some generic bad / good block scan pattern which are used - * while scanning a device for factory marked good / bad blocks. */ +/* + * Define some generic bad / good block scan pattern which are used + * while scanning a device for factory marked good / bad blocks. + */ static uint8_t scan_ff_pattern[] = { 0xff, 0xff };

static uint8_t scan_agand_pattern[] = { 0x1C, 0x71, 0xC7, 0x1C, 0x71, 0xC7 }; @@ -1285,8 +1243,7 @@ static struct nand_bbt_descr agand_flashbased = { .pattern = scan_agand_pattern };

-/* Generic flash bbt decriptors -*/ +/* Generic flash bbt descriptors */ static uint8_t bbt_pattern[] = {'B', 'b', 't', '0' }; static uint8_t mirror_pattern[] = {'1', 't', 'b', 'B' };

@@ -1296,7 +1253,7 @@ static struct nand_bbt_descr bbt_main_descr = { .offs = 8, .len = 4, .veroffs = 12, - .maxblocks = 4, + .maxblocks = NAND_BBT_SCAN_MAXBLOCKS, .pattern = bbt_pattern };

@@ -1306,55 +1263,51 @@ static struct nand_bbt_descr bbt_mirror_descr = { .offs = 8, .len = 4, .veroffs = 12, - .maxblocks = 4, + .maxblocks = NAND_BBT_SCAN_MAXBLOCKS, .pattern = mirror_pattern };

-static struct nand_bbt_descr bbt_main_no_bbt_descr = { +static struct nand_bbt_descr bbt_main_no_oob_descr = { .options = NAND_BBT_LASTBLOCK | NAND_BBT_CREATE | NAND_BBT_WRITE | NAND_BBT_2BIT | NAND_BBT_VERSION | NAND_BBT_PERCHIP | NAND_BBT_NO_OOB, .len = 4, .veroffs = 4, - .maxblocks = 4, + .maxblocks = NAND_BBT_SCAN_MAXBLOCKS, .pattern = bbt_pattern };

-static struct nand_bbt_descr bbt_mirror_no_bbt_descr = { +static struct nand_bbt_descr bbt_mirror_no_oob_descr = { .options = NAND_BBT_LASTBLOCK | NAND_BBT_CREATE | NAND_BBT_WRITE | NAND_BBT_2BIT | NAND_BBT_VERSION | NAND_BBT_PERCHIP | NAND_BBT_NO_OOB, .len = 4, .veroffs = 4, - .maxblocks = 4, + .maxblocks = NAND_BBT_SCAN_MAXBLOCKS, .pattern = mirror_pattern };

-#define BBT_SCAN_OPTIONS (NAND_BBT_SCANLASTPAGE | NAND_BBT_SCAN2NDPAGE | \ - NAND_BBT_SCANBYTE1AND6) +#define BADBLOCK_SCAN_MASK (~NAND_BBT_NO_OOB) /** - * nand_create_default_bbt_descr - [Internal] Creates a BBT descriptor structure - * @this: NAND chip to create descriptor for + * nand_create_badblock_pattern - [INTERN] Creates a BBT descriptor structure + * @this: NAND chip to create descriptor for * * This function allocates and initializes a nand_bbt_descr for BBM detection - * based on the properties of "this". The new descriptor is stored in + * based on the properties of @this. The new descriptor is stored in * this->badblock_pattern. Thus, this->badblock_pattern should be NULL when * passed to this function. - * */ -static int nand_create_default_bbt_descr(struct nand_chip *this) +static int nand_create_badblock_pattern(struct nand_chip *this) { struct nand_bbt_descr *bd; if (this->badblock_pattern) { - printk(KERN_WARNING "BBT descr already allocated; not replacing.\n"); + pr_warn("Bad block pattern already allocated; not replacing\n"); return -EINVAL; } bd = kzalloc(sizeof(*bd), GFP_KERNEL); - if (!bd) { - printk(KERN_ERR "nand_create_default_bbt_descr: Out of memory\n"); + if (!bd) return -ENOMEM; - } - bd->options = this->options & BBT_SCAN_OPTIONS; + bd->options = this->bbt_options & BADBLOCK_SCAN_MASK; bd->offs = this->badblockpos; bd->len = (this->options & NAND_BUSWIDTH_16) ? 2 : 1; bd->pattern = scan_ff_pattern; @@ -1365,22 +1318,20 @@ static int nand_create_default_bbt_descr(struct nand_chip *this)

/** * nand_default_bbt - [NAND Interface] Select a default bad block table for the device - * @mtd: MTD device structure - * - * This function selects the default bad block table - * support for the device and calls the nand_scan_bbt function + * @mtd: MTD device structure * -*/ + * This function selects the default bad block table support for the device and + * calls the nand_scan_bbt function. + */ int nand_default_bbt(struct mtd_info *mtd) { struct nand_chip *this = mtd->priv;

- /* Default for AG-AND. We must use a flash based - * bad block table as the devices have factory marked - * _good_ blocks. Erasing those blocks leads to loss - * of the good / bad information, so we _must_ store - * this information in a good / bad table during - * startup + /* + * Default for AG-AND. We must use a flash based bad block table as the + * devices have factory marked _good_ blocks. Erasing those blocks + * leads to loss of the good / bad information, so we _must_ store this + * information in a good / bad table during startup. */ if (this->options & NAND_IS_AND) { /* Use the default pattern descriptors */ @@ -1388,17 +1339,17 @@ int nand_default_bbt(struct mtd_info *mtd) this->bbt_td = &bbt_main_descr; this->bbt_md = &bbt_mirror_descr; } - this->options |= NAND_USE_FLASH_BBT; + this->bbt_options |= NAND_BBT_USE_FLASH; return nand_scan_bbt(mtd, &agand_flashbased); }

- /* Is a flash based bad block table requested ? */ - if (this->options & NAND_USE_FLASH_BBT) { + /* Is a flash based bad block table requested? */ + if (this->bbt_options & NAND_BBT_USE_FLASH) { /* Use the default pattern descriptors */ if (!this->bbt_td) { - if (this->options & NAND_USE_FLASH_BBT_NO_OOB) { - this->bbt_td = &bbt_main_no_bbt_descr; - this->bbt_md = &bbt_mirror_no_bbt_descr; + if (this->bbt_options & NAND_BBT_NO_OOB) { + this->bbt_td = &bbt_main_no_oob_descr; + this->bbt_md = &bbt_mirror_no_oob_descr; } else { this->bbt_td = &bbt_main_descr; this->bbt_md = &bbt_mirror_descr; @@ -1410,18 +1361,17 @@ int nand_default_bbt(struct mtd_info *mtd) }

if (!this->badblock_pattern) - nand_create_default_bbt_descr(this); + nand_create_badblock_pattern(this);

return nand_scan_bbt(mtd, this->badblock_pattern); }

/** * nand_isbad_bbt - [NAND Interface] Check if a block is bad - * @mtd: MTD device structure - * @offs: offset in the device - * @allowbbt: allow access to bad block table region - * -*/ + * @mtd: MTD device structure + * @offs: offset in the device + * @allowbbt: allow access to bad block table region + */ int nand_isbad_bbt(struct mtd_info *mtd, loff_t offs, int allowbbt) { struct nand_chip *this = mtd->priv; diff --git a/drivers/mtd/nand/nand_ids.c b/drivers/mtd/nand/nand_ids.c index 3953549..f856778 100644 --- a/drivers/mtd/nand/nand_ids.c +++ b/drivers/mtd/nand/nand_ids.c @@ -71,14 +71,15 @@ const struct nand_flash_dev nand_flash_ids[] = { * These are the new chips with large page size. The pagesize and the * erasesize is determined from the extended id bytes */ -#define LP_OPTIONS (NAND_SAMSUNG_LP_OPTIONS | NAND_NO_READRDY | NAND_NO_AUTOINCR) +#define LP_OPTIONS NAND_SAMSUNG_LP_OPTIONS #define LP_OPTIONS16 (LP_OPTIONS | NAND_BUSWIDTH_16)

- /*512 Megabit */ + /* 512 Megabit */ {"NAND 64MiB 1,8V 8-bit", 0xA2, 0, 64, 0, LP_OPTIONS}, {"NAND 64MiB 1,8V 8-bit", 0xA0, 0, 64, 0, LP_OPTIONS}, {"NAND 64MiB 3,3V 8-bit", 0xF2, 0, 64, 0, LP_OPTIONS}, {"NAND 64MiB 3,3V 8-bit", 0xD0, 0, 64, 0, LP_OPTIONS}, + {"NAND 64MiB 3,3V 8-bit", 0xF0, 0, 64, 0, LP_OPTIONS}, {"NAND 64MiB 1,8V 16-bit", 0xB2, 0, 64, 0, LP_OPTIONS16}, {"NAND 64MiB 1,8V 16-bit", 0xB0, 0, 64, 0, LP_OPTIONS16}, {"NAND 64MiB 3,3V 16-bit", 0xC2, 0, 64, 0, LP_OPTIONS16}, @@ -157,9 +158,7 @@ const struct nand_flash_dev nand_flash_ids[] = { * writes possible, but not implemented now */ {"AND 128MiB 3,3V 8-bit", 0x01, 2048, 128, 0x4000, - NAND_IS_AND | NAND_NO_AUTOINCR |NAND_NO_READRDY | NAND_4PAGE_ARRAY | - BBT_AUTO_REFRESH - }, + NAND_IS_AND | NAND_4PAGE_ARRAY | BBT_AUTO_REFRESH},

{NULL,} }; @@ -176,6 +175,9 @@ const struct nand_manufacturers nand_manuf_ids[] = { {NAND_MFR_STMICRO, "ST Micro"}, {NAND_MFR_HYNIX, "Hynix"}, {NAND_MFR_MICRON, "Micron"}, - {NAND_MFR_AMD, "AMD"}, + {NAND_MFR_AMD, "AMD/Spansion"}, + {NAND_MFR_MACRONIX, "Macronix"}, + {NAND_MFR_EON, "Eon"}, {0x0, "Unknown"} }; + diff --git a/drivers/mtd/nand/nand_util.c b/drivers/mtd/nand/nand_util.c index 2ba0c5e..0c68384 100644 --- a/drivers/mtd/nand/nand_util.c +++ b/drivers/mtd/nand/nand_util.c @@ -121,7 +121,7 @@ int nand_erase_opts(nand_info_t *meminfo, const nand_erase_options_t *opts) WATCHDOG_RESET();

if (!opts->scrub && bbtest) { - int ret = meminfo->block_isbad(meminfo, erase.addr); + int ret = mtd_block_isbad(meminfo, erase.addr); if (ret > 0) { if (!opts->quiet) printf("\rSkipping bad block at " @@ -144,7 +144,7 @@ int nand_erase_opts(nand_info_t *meminfo, const nand_erase_options_t *opts)

erased_length++;

- result = meminfo->erase(meminfo, &erase); + result = mtd_erase(meminfo, &erase); if (result != 0) { printf("\n%s: MTD Erase failure: %d\n", mtd_device, result); @@ -153,15 +153,16 @@ int nand_erase_opts(nand_info_t *meminfo, const nand_erase_options_t *opts)

/* format for JFFS2 ? */ if (opts->jffs2 && chip->ecc.layout->oobavail >= 8) { - chip->ops.ooblen = 8; - chip->ops.datbuf = NULL; - chip->ops.oobbuf = (uint8_t *)&cleanmarker; - chip->ops.ooboffs = 0; - chip->ops.mode = MTD_OOB_AUTO; + struct mtd_oob_ops ops; + ops.ooblen = 8; + ops.datbuf = NULL; + ops.oobbuf = (uint8_t *)&cleanmarker; + ops.ooboffs = 0; + ops.mode = MTD_OPS_AUTO_OOB;

- result = meminfo->write_oob(meminfo, + result = mtd_write_oob(meminfo, erase.addr, - &chip->ops); + &ops); if (result != 0) { printf("\n%s: MTD writeoob failure: %d\n", mtd_device, result); @@ -557,7 +558,7 @@ int nand_write_skip_bad(nand_info_t *nand, loff_t offset, size_t *length,

ops.len = pagesize; ops.ooblen = nand->oobsize; - ops.mode = MTD_OOB_AUTO; + ops.mode = MTD_OPS_AUTO_OOB; ops.ooboffs = 0;

pages = write_size / pagesize_oob; diff --git a/drivers/mtd/nand/omap_gpmc.c b/drivers/mtd/nand/omap_gpmc.c index f1469d1..ccf9750 100644 --- a/drivers/mtd/nand/omap_gpmc.c +++ b/drivers/mtd/nand/omap_gpmc.c @@ -344,7 +344,7 @@ int board_nand_init(struct nand_chip *nand) nand->IO_ADDR_W = (void __iomem *)&gpmc_cfg->cs[cs].nand_cmd;

nand->cmd_ctrl = omap_nand_hwcontrol; - nand->options = NAND_NO_PADDING | NAND_CACHEPRG | NAND_NO_AUTOINCR; + nand->options = NAND_NO_PADDING | NAND_CACHEPRG; /* If we are 16 bit dev, our gpmc config tells us that */ if ((readl(&gpmc_cfg->cs[cs].config1) & 0x3000) == 0x1000) nand->options |= NAND_BUSWIDTH_16; diff --git a/drivers/mtd/nand/tegra_nand.c b/drivers/mtd/nand/tegra_nand.c index 4d94cc6..854fd21 100644 --- a/drivers/mtd/nand/tegra_nand.c +++ b/drivers/mtd/nand/tegra_nand.c @@ -707,7 +707,7 @@ static int nand_rw_page(struct mtd_info *mtd, struct nand_chip *chip, * -EIO when command timeout */ static int nand_read_page_hwecc(struct mtd_info *mtd, - struct nand_chip *chip, uint8_t *buf, int page) + struct nand_chip *chip, uint8_t *buf, int oob_required, int page) { return nand_rw_page(mtd, chip, buf, page, 1, 0); } @@ -719,8 +719,8 @@ static int nand_read_page_hwecc(struct mtd_info *mtd, * @param chip nand chip info structure * @param buf data buffer */ -static void nand_write_page_hwecc(struct mtd_info *mtd, - struct nand_chip *chip, const uint8_t *buf) +static int nand_write_page_hwecc(struct mtd_info *mtd, + struct nand_chip *chip, const uint8_t *buf, int oob_required) { int page; struct nand_drv *info; @@ -731,6 +731,7 @@ static void nand_write_page_hwecc(struct mtd_info *mtd, (readl(&info->reg->addr_reg2) << 16);

nand_rw_page(mtd, chip, (uint8_t *)buf, page, 1, 1); + return 0; }

@@ -746,7 +747,7 @@ static void nand_write_page_hwecc(struct mtd_info *mtd, * -EIO when command timeout */ static int nand_read_page_raw(struct mtd_info *mtd, - struct nand_chip *chip, uint8_t *buf, int page) + struct nand_chip *chip, uint8_t *buf, int oob_required, int page) { return nand_rw_page(mtd, chip, buf, page, 0, 0); } @@ -758,8 +759,8 @@ static int nand_read_page_raw(struct mtd_info *mtd, * @param chip nand chip info structure * @param buf data buffer */ -static void nand_write_page_raw(struct mtd_info *mtd, - struct nand_chip *chip, const uint8_t *buf) +static int nand_write_page_raw(struct mtd_info *mtd, + struct nand_chip *chip, const uint8_t *buf, int oob_required) { int page; struct nand_drv *info; @@ -769,6 +770,7 @@ static void nand_write_page_raw(struct mtd_info *mtd, (readl(&info->reg->addr_reg2) << 16);

nand_rw_page(mtd, chip, (uint8_t *)buf, page, 0, 1); + return 0; }

/** @@ -873,19 +875,13 @@ static int nand_rw_oob(struct mtd_info *mtd, struct nand_chip *chip, * @param mtd mtd info structure * @param chip nand chip info structure * @param page page number to read - * @param sndcmd flag whether to issue read command or not - * @return 1 - issue read command next time - * 0 - not to issue */ static int nand_read_oob(struct mtd_info *mtd, struct nand_chip *chip, - int page, int sndcmd) + int page) { - if (sndcmd) { - chip->cmdfunc(mtd, NAND_CMD_READOOB, 0, page); - sndcmd = 0; - } + chip->cmdfunc(mtd, NAND_CMD_READOOB, 0, page); nand_rw_oob(mtd, chip, page, 0, 0); - return sndcmd; + return 0; }

/** diff --git a/drivers/mtd/nand/tegra_nand.h b/drivers/mtd/nand/tegra_nand.h index 7e74be7..622b869 100644 --- a/drivers/mtd/nand/tegra_nand.h +++ b/drivers/mtd/nand/tegra_nand.h @@ -224,7 +224,7 @@ enum { #define BCH_DEC_STATUS_MAX_CORR_CNT_MASK (0x1f << 8) #define BCH_DEC_STATUS_PAGE_NUMBER_MASK 0xFF

-#define LP_OPTIONS (NAND_NO_READRDY | NAND_NO_AUTOINCR) +#define LP_OPTIONS 0

struct nand_ctlr { u32 command; /* offset 00h */ diff --git a/drivers/mtd/onenand/onenand_base.c b/drivers/mtd/onenand/onenand_base.c index 1a7b40e..882341e 100644 --- a/drivers/mtd/onenand/onenand_base.c +++ b/drivers/mtd/onenand/onenand_base.c @@ -747,7 +747,7 @@ static void onenand_release_device(struct mtd_info *mtd) }

/** - * onenand_transfer_auto_oob - [Internal] oob auto-placement transfer + * onenand_transfer_auto_oob - [INTERN] oob auto-placement transfer * @param mtd MTD device structure * @param buf destination address * @param column oob offset to read from @@ -811,7 +811,7 @@ static int onenand_recover_lsb(struct mtd_info *mtd, loff_t addr, int status) return status;

/* check if we failed due to uncorrectable error */ - if (status != -EBADMSG && status != ONENAND_BBT_READ_ECC_ERROR) + if (!mtd_is_eccerr(status) && status != ONENAND_BBT_READ_ECC_ERROR) return status;

/* check if address lies in MLC region */ @@ -851,7 +851,7 @@ static int onenand_read_ops_nolock(struct mtd_info *mtd, loff_t from,

MTDDEBUG(MTD_DEBUG_LEVEL3, "onenand_read_ops_nolock: from = 0x%08x, len = %i\n", (unsigned int) from, (int) len);

- if (ops->mode == MTD_OOB_AUTO) + if (ops->mode == MTD_OPS_AUTO_OOB) oobsize = this->ecclayout->oobavail; else oobsize = mtd->oobsize; @@ -918,7 +918,7 @@ static int onenand_read_ops_nolock(struct mtd_info *mtd, loff_t from, thisooblen = oobsize - oobcolumn; thisooblen = min_t(int, thisooblen, ooblen - oobread);

- if (ops->mode == MTD_OOB_AUTO) + if (ops->mode == MTD_OPS_AUTO_OOB) onenand_transfer_auto_oob(mtd, oobbuf, oobcolumn, thisooblen); else this->read_bufferram(mtd, 0, ONENAND_SPARERAM, oobbuf, oobcolumn, thisooblen); @@ -933,7 +933,7 @@ static int onenand_read_ops_nolock(struct mtd_info *mtd, loff_t from, if (unlikely(ret)) ret = onenand_recover_lsb(mtd, from, ret); onenand_update_bufferram(mtd, from, !ret); - if (ret == -EBADMSG) + if (mtd_is_eccerr(ret)) ret = 0; }

@@ -954,7 +954,7 @@ static int onenand_read_ops_nolock(struct mtd_info *mtd, loff_t from, /* Now wait for load */ ret = this->wait(mtd, FL_READING); onenand_update_bufferram(mtd, from, !ret); - if (ret == -EBADMSG) + if (mtd_is_eccerr(ret)) ret = 0; } } @@ -991,7 +991,7 @@ static int onenand_read_oob_nolock(struct mtd_info *mtd, loff_t from, struct mtd_ecc_stats stats; int read = 0, thislen, column, oobsize; size_t len = ops->ooblen; - mtd_oob_mode_t mode = ops->mode; + unsigned int mode = ops->mode; u_char *buf = ops->oobbuf; int ret = 0, readcmd;

@@ -1002,7 +1002,7 @@ static int onenand_read_oob_nolock(struct mtd_info *mtd, loff_t from, /* Initialize return length value */ ops->oobretlen = 0;

- if (mode == MTD_OOB_AUTO) + if (mode == MTD_OPS_AUTO_OOB) oobsize = this->ecclayout->oobavail; else oobsize = mtd->oobsize; @@ -1045,7 +1045,7 @@ static int onenand_read_oob_nolock(struct mtd_info *mtd, loff_t from, break; }

- if (mode == MTD_OOB_AUTO) + if (mode == MTD_OPS_AUTO_OOB) onenand_transfer_auto_oob(mtd, buf, column, thislen); else this->read_bufferram(mtd, 0, ONENAND_SPARERAM, buf, column, thislen); @@ -1119,10 +1119,10 @@ int onenand_read_oob(struct mtd_info *mtd, loff_t from, int ret;

switch (ops->mode) { - case MTD_OOB_PLACE: - case MTD_OOB_AUTO: + case MTD_OPS_PLACE_OOB: + case MTD_OPS_AUTO_OOB: break; - case MTD_OOB_RAW: + case MTD_OPS_RAW: /* Not implemented yet */ default: return -EINVAL; @@ -1341,7 +1341,7 @@ static int onenand_verify(struct mtd_info *mtd, const u_char *buf, loff_t addr, #define NOTALIGNED(x) ((x & (this->subpagesize - 1)) != 0)

/** - * onenand_fill_auto_oob - [Internal] oob auto-placement transfer + * onenand_fill_auto_oob - [INTERN] oob auto-placement transfer * @param mtd MTD device structure * @param oob_buf oob buffer * @param buf source address @@ -1408,19 +1408,13 @@ static int onenand_write_ops_nolock(struct mtd_info *mtd, loff_t to, ops->retlen = 0; ops->oobretlen = 0;

- /* Do not allow writes past end of device */ - if (unlikely((to + len) > mtd->size)) { - printk(KERN_ERR "onenand_write_ops_nolock: Attempt write to past end of device\n"); - return -EINVAL; - } - /* Reject writes, which are not page aligned */ if (unlikely(NOTALIGNED(to) || NOTALIGNED(len))) { printk(KERN_ERR "onenand_write_ops_nolock: Attempt to write not page aligned data\n"); return -EINVAL; }

- if (ops->mode == MTD_OOB_AUTO) + if (ops->mode == MTD_OPS_AUTO_OOB) oobsize = this->ecclayout->oobavail; else oobsize = mtd->oobsize; @@ -1454,7 +1448,7 @@ static int onenand_write_ops_nolock(struct mtd_info *mtd, loff_t to, /* We send data to spare ram with oobsize * * to prevent byte access */ memset(oobbuf, 0xff, mtd->oobsize); - if (ops->mode == MTD_OOB_AUTO) + if (ops->mode == MTD_OPS_AUTO_OOB) onenand_fill_auto_oob(mtd, oobbuf, oob, oobcolumn, thisooblen); else memcpy(oobbuf + oobcolumn, oob, thisooblen); @@ -1506,7 +1500,7 @@ static int onenand_write_ops_nolock(struct mtd_info *mtd, loff_t to, }

/** - * onenand_write_oob_nolock - [Internal] OneNAND write out-of-band + * onenand_write_oob_nolock - [INTERN] OneNAND write out-of-band * @param mtd MTD device structure * @param to offset to write to * @param len number of bytes to write @@ -1525,7 +1519,7 @@ static int onenand_write_oob_nolock(struct mtd_info *mtd, loff_t to, u_char *oobbuf; size_t len = ops->ooblen; const u_char *buf = ops->oobbuf; - mtd_oob_mode_t mode = ops->mode; + unsigned int mode = ops->mode;

to += ops->ooboffs;

@@ -1534,7 +1528,7 @@ static int onenand_write_oob_nolock(struct mtd_info *mtd, loff_t to, /* Initialize retlen, in case of early exit */ ops->oobretlen = 0;

- if (mode == MTD_OOB_AUTO) + if (mode == MTD_OPS_AUTO_OOB) oobsize = this->ecclayout->oobavail; else oobsize = mtd->oobsize; @@ -1575,7 +1569,7 @@ static int onenand_write_oob_nolock(struct mtd_info *mtd, loff_t to, /* We send data to spare ram with oobsize * to prevent byte access */ memset(oobbuf, 0xff, mtd->oobsize); - if (mode == MTD_OOB_AUTO) + if (mode == MTD_OPS_AUTO_OOB) onenand_fill_auto_oob(mtd, oobbuf, buf, column, thislen); else memcpy(oobbuf + column, buf, thislen); @@ -1665,10 +1659,10 @@ int onenand_write_oob(struct mtd_info *mtd, loff_t to, int ret;

switch (ops->mode) { - case MTD_OOB_PLACE: - case MTD_OOB_AUTO: + case MTD_OPS_PLACE_OOB: + case MTD_OPS_AUTO_OOB: break; - case MTD_OOB_RAW: + case MTD_OPS_RAW: /* Not implemented yet */ default: return -EINVAL; @@ -1724,13 +1718,6 @@ int onenand_erase(struct mtd_info *mtd, struct erase_info *instr) MTDDEBUG(MTD_DEBUG_LEVEL3, "onenand_erase: start = 0x%08x, len = %i\n", (unsigned int) addr, len);

- /* Do not allow erase past end of device */ - if (unlikely((len + addr) > mtd->size)) { - MTDDEBUG(MTD_DEBUG_LEVEL0, "onenand_erase:" - "Erase past end of device\n"); - return -EINVAL; - } - if (FLEXONENAND(this)) { /* Find the eraseregion of this address */ i = flexonenand_region(mtd, addr); @@ -1766,8 +1753,6 @@ int onenand_erase(struct mtd_info *mtd, struct erase_info *instr) return -EINVAL; }

- instr->fail_addr = 0xffffffff; - /* Grab the lock and see if the device is available */ onenand_get_device(mtd, FL_ERASING);

@@ -1893,7 +1878,7 @@ static int onenand_default_block_markbad(struct mtd_info *mtd, loff_t ofs) struct bbm_info *bbm = this->bbm; u_char buf[2] = {0, 0}; struct mtd_oob_ops ops = { - .mode = MTD_OOB_PLACE, + .mode = MTD_OPS_PLACE_OOB, .ooblen = 2, .oobbuf = buf, .ooboffs = 0, @@ -1919,7 +1904,6 @@ static int onenand_default_block_markbad(struct mtd_info *mtd, loff_t ofs) */ int onenand_block_markbad(struct mtd_info *mtd, loff_t ofs) { - struct onenand_chip *this = mtd->priv; int ret;

ret = onenand_block_isbad(mtd, ofs); @@ -1930,7 +1914,7 @@ int onenand_block_markbad(struct mtd_info *mtd, loff_t ofs) return ret; }

- ret = this->block_markbad(mtd, ofs); + ret = mtd_block_markbad(mtd, ofs); return ret; }

@@ -2390,7 +2374,7 @@ static int flexonenand_check_blocks_erased(struct mtd_info *mtd, int i, ret; int block; struct mtd_oob_ops ops = { - .mode = MTD_OOB_PLACE, + .mode = MTD_OPS_PLACE_OOB, .ooboffs = 0, .ooblen = mtd->oobsize, .datbuf = NULL, @@ -2649,14 +2633,14 @@ int onenand_probe(struct mtd_info *mtd) mtd->size = this->chipsize;

mtd->flags = MTD_CAP_NANDFLASH; - mtd->erase = onenand_erase; - mtd->read = onenand_read; - mtd->write = onenand_write; - mtd->read_oob = onenand_read_oob; - mtd->write_oob = onenand_write_oob; - mtd->sync = onenand_sync; - mtd->block_isbad = onenand_block_isbad; - mtd->block_markbad = onenand_block_markbad; + mtd->_erase = onenand_erase; + mtd->_read = onenand_read; + mtd->_write = onenand_write; + mtd->_read_oob = onenand_read_oob; + mtd->_write_oob = onenand_write_oob; + mtd->_sync = onenand_sync; + mtd->_block_isbad = onenand_block_isbad; + mtd->_block_markbad = onenand_block_markbad;

return 0; } diff --git a/drivers/mtd/onenand/onenand_bbt.c b/drivers/mtd/onenand/onenand_bbt.c index 9d5da54..0267c2c 100644 --- a/drivers/mtd/onenand/onenand_bbt.c +++ b/drivers/mtd/onenand/onenand_bbt.c @@ -87,7 +87,7 @@ static int create_bbt(struct mtd_info *mtd, uint8_t * buf, startblock = 0; from = 0;

- ops.mode = MTD_OOB_PLACE; + ops.mode = MTD_OPS_PLACE_OOB; ops.ooblen = readlen; ops.oobbuf = buf; ops.len = ops.ooboffs = ops.retlen = ops.oobretlen = 0; @@ -200,10 +200,8 @@ int onenand_scan_bbt(struct mtd_info *mtd, struct nand_bbt_descr *bd) len = this->chipsize >> (this->erase_shift + 2); /* Allocate memory (2bit per block) */ bbm->bbt = malloc(len); - if (!bbm->bbt) { - printk(KERN_ERR "onenand_scan_bbt: Out of memory\n"); + if (!bbm->bbt) return -ENOMEM; - } /* Clear the memory bad block table */ memset(bbm->bbt, 0x00, len);

diff --git a/drivers/mtd/ubi/build.c b/drivers/mtd/ubi/build.c index d144ac2..0bd2938 100644 --- a/drivers/mtd/ubi/build.c +++ b/drivers/mtd/ubi/build.c @@ -539,7 +539,7 @@ static int io_init(struct ubi_device *ubi) ubi->peb_count = mtd_div_by_eb(ubi->mtd->size, ubi->mtd); ubi->flash_size = ubi->mtd->size;

- if (ubi->mtd->block_isbad && ubi->mtd->block_markbad) + if (mtd_can_have_bb(ubi->mtd)) ubi->bad_allowed = 1;

ubi->min_io_size = ubi->mtd->writesize; diff --git a/drivers/mtd/ubi/eba.c b/drivers/mtd/ubi/eba.c index d523c94..d2d3c9c 100644 --- a/drivers/mtd/ubi/eba.c +++ b/drivers/mtd/ubi/eba.c @@ -460,7 +460,7 @@ retry: if (err == UBI_IO_BITFLIPS) { scrub = 1; err = 0; - } else if (err == -EBADMSG) { + } else if (mtd_is_eccerr(err)) { if (vol->vol_type == UBI_DYNAMIC_VOLUME) goto out_unlock; scrub = 1; diff --git a/drivers/mtd/ubi/io.c b/drivers/mtd/ubi/io.c index 8423894..05de9ae 100644 --- a/drivers/mtd/ubi/io.c +++ b/drivers/mtd/ubi/io.c @@ -154,7 +154,7 @@ int ubi_io_read(const struct ubi_device *ubi, void *buf, int pnum, int offset,

addr = (loff_t)pnum * ubi->peb_size + offset; retry: - err = ubi->mtd->read(ubi->mtd, addr, len, &read, buf); + err = mtd_read(ubi->mtd, addr, len, &read, buf); if (err) { if (err == -EUCLEAN) { /* @@ -268,7 +268,7 @@ int ubi_io_write(struct ubi_device *ubi, const void *buf, int pnum, int offset, }

addr = (loff_t)pnum * ubi->peb_size + offset; - err = ubi->mtd->write(ubi->mtd, addr, len, &written, buf); + err = mtd_write(ubi->mtd, addr, len, &written, buf); if (err) { ubi_err("error %d while writing %d bytes to PEB %d:%d, written" " %zd bytes", err, len, pnum, offset, written); @@ -318,7 +318,7 @@ retry: ei.callback = erase_callback; ei.priv = (unsigned long)&wq;

- err = ubi->mtd->erase(ubi->mtd, &ei); + err = mtd_erase(ubi->mtd, &ei); if (err) { if (retries++ < UBI_IO_RETRIES) { dbg_io("error %d while erasing PEB %d, retry", @@ -516,7 +516,7 @@ int ubi_io_is_bad(const struct ubi_device *ubi, int pnum) if (ubi->bad_allowed) { int ret;

- ret = mtd->block_isbad(mtd, (loff_t)pnum * ubi->peb_size); + ret = mtd_block_isbad(mtd, (loff_t)pnum * ubi->peb_size); if (ret < 0) ubi_err("error %d while checking if PEB %d is bad", ret, pnum); @@ -551,7 +551,7 @@ int ubi_io_mark_bad(const struct ubi_device *ubi, int pnum) if (!ubi->bad_allowed) return 0;

- err = mtd->block_markbad(mtd, (loff_t)pnum * ubi->peb_size); + err = mtd_block_markbad(mtd, (loff_t)pnum * ubi->peb_size); if (err) ubi_err("cannot mark PEB %d bad, error %d", pnum, err); return err; @@ -1242,7 +1242,7 @@ static int paranoid_check_all_ff(struct ubi_device *ubi, int pnum, int offset, loff_t addr = (loff_t)pnum * ubi->peb_size + offset;

mutex_lock(&ubi->dbg_buf_mutex); - err = ubi->mtd->read(ubi->mtd, addr, len, &read, ubi->dbg_peb_buf); + err = mtd_read(ubi->mtd, addr, len, &read, ubi->dbg_peb_buf); if (err && err != -EUCLEAN) { ubi_err("error %d while reading %d bytes from PEB %d:%d, " "read %zd bytes", err, len, pnum, offset, read); diff --git a/drivers/mtd/ubi/kapi.c b/drivers/mtd/ubi/kapi.c index 423d479..e553188 100644 --- a/drivers/mtd/ubi/kapi.c +++ b/drivers/mtd/ubi/kapi.c @@ -349,7 +349,7 @@ int ubi_leb_read(struct ubi_volume_desc *desc, int lnum, char *buf, int offset, return 0;

err = ubi_eba_read_leb(ubi, vol, lnum, buf, offset, len, check); - if (err && err == -EBADMSG && vol->vol_type == UBI_STATIC_VOLUME) { + if (err && mtd_is_eccerr(err) && vol->vol_type == UBI_STATIC_VOLUME) { ubi_warn("mark volume %d as corrupted", vol_id); vol->corrupted = 1; } diff --git a/drivers/mtd/ubi/misc.c b/drivers/mtd/ubi/misc.c index a6410bf..e8660d9 100644 --- a/drivers/mtd/ubi/misc.c +++ b/drivers/mtd/ubi/misc.c @@ -82,7 +82,7 @@ int ubi_check_volume(struct ubi_device *ubi, int vol_id)

err = ubi_eba_read_leb(ubi, vol, i, buf, 0, size, 1); if (err) { - if (err == -EBADMSG) + if (mtd_is_eccerr(err)) err = 1; break; } diff --git a/drivers/mtd/ubi/vtbl.c b/drivers/mtd/ubi/vtbl.c index f679f06..29d2320 100644 --- a/drivers/mtd/ubi/vtbl.c +++ b/drivers/mtd/ubi/vtbl.c @@ -388,7 +388,7 @@ static struct ubi_vtbl_record *process_lvol(struct ubi_device *ubi,

err = ubi_io_read_data(ubi, leb[seb->lnum], seb->pnum, 0, ubi->vtbl_size); - if (err == UBI_IO_BITFLIPS || err == -EBADMSG) + if (err == UBI_IO_BITFLIPS || mtd_is_eccerr(err)) /* * Scrub the PEB later. Note, -EBADMSG indicates an * uncorrectable ECC error, but we have our own CRC and diff --git a/fs/yaffs2/yaffs_mtdif.c b/fs/yaffs2/yaffs_mtdif.c index db49052..6fcba04 100644 --- a/fs/yaffs2/yaffs_mtdif.c +++ b/fs/yaffs2/yaffs_mtdif.c @@ -70,22 +70,22 @@ int nandmtd_WriteChunkToNAND(struct yaffs_dev *dev, int chunkInNAND, u8 spareAsBytes[8]; /* OOB */

if (data && !spare) - retval = mtd->write(mtd, addr, dev->data_bytes_per_chunk, + retval = mtd_write(mtd, addr, dev->data_bytes_per_chunk, &dummy, data); else if (spare) { if (dev->param.use_nand_ecc) { translate_spare2oob(spare, spareAsBytes); - ops.mode = MTD_OOB_AUTO; + ops.mode = MTD_OPS_AUTO_OOB; ops.ooblen = 8; /* temp hack */ } else { - ops.mode = MTD_OOB_RAW; + ops.mode = MTD_OPS_RAW; ops.ooblen = YAFFS_BYTES_PER_SPARE; } ops.len = data ? dev->data_bytes_per_chunk : ops.ooblen; ops.datbuf = (u8 *)data; ops.ooboffs = 0; ops.oobbuf = spareAsBytes; - retval = mtd->write_oob(mtd, addr, &ops); + retval = mtd_write_oob(mtd, addr, &ops); }

if (retval == 0) @@ -106,21 +106,21 @@ int nandmtd_ReadChunkFromNAND(struct yaffs_dev *dev, int chunkInNAND, u8 *data, u8 spareAsBytes[8]; /* OOB */

if (data && !spare) - retval = mtd->read(mtd, addr, dev->data_bytes_per_chunk, + retval = mtd_read(mtd, addr, dev->data_bytes_per_chunk, &dummy, data); else if (spare) { if (dev->param.use_nand_ecc) { - ops.mode = MTD_OOB_AUTO; + ops.mode = MTD_OPS_AUTO_OOB; ops.ooblen = 8; /* temp hack */ } else { - ops.mode = MTD_OOB_RAW; + ops.mode = MTD_OPS_RAW; ops.ooblen = YAFFS_BYTES_PER_SPARE; } ops.len = data ? dev->data_bytes_per_chunk : ops.ooblen; ops.datbuf = data; ops.ooboffs = 0; ops.oobbuf = spareAsBytes; - retval = mtd->read_oob(mtd, addr, &ops); + retval = mtd_read_oob(mtd, addr, &ops); if (dev->param.use_nand_ecc) translate_oob2spare(spare, spareAsBytes); } @@ -151,7 +151,7 @@ int nandmtd_EraseBlockInNAND(struct yaffs_dev *dev, int blockNumber) /* Todo finish off the ei if required */

- retval = mtd->erase(mtd, &ei); + retval = mtd_erase(mtd, &ei);

if (retval == 0) return YAFFS_OK; diff --git a/fs/yaffs2/yaffs_mtdif2.c b/fs/yaffs2/yaffs_mtdif2.c index 8135bcc..234cb70 100644 --- a/fs/yaffs2/yaffs_mtdif2.c +++ b/fs/yaffs2/yaffs_mtdif2.c @@ -77,13 +77,13 @@ int nandmtd2_write_chunk_tags(struct yaffs_dev *dev, int nand_chunk, yaffs_pack_tags2(&pt, tags, !dev->param.no_tags_ecc); }

- ops.mode = MTD_OOB_AUTO; + ops.mode = MTD_OPS_AUTO_OOB; ops.ooblen = (dev->param.inband_tags) ? 0 : packed_tags_size; ops.len = dev->param.total_bytes_per_chunk; ops.ooboffs = 0; ops.datbuf = (u8 *) data; ops.oobbuf = (dev->param.inband_tags) ? NULL : packed_tags_ptr; - retval = mtd->write_oob(mtd, addr, &ops); + retval = mtd_write_oob(mtd, addr, &ops);

if (retval == 0) return YAFFS_OK; @@ -121,16 +121,16 @@ int nandmtd2_read_chunk_tags(struct yaffs_dev *dev, int nand_chunk, }

if (dev->param.inband_tags || (data && !tags)) - retval = mtd->read(mtd, addr, dev->param.total_bytes_per_chunk, + retval = mtd_read(mtd, addr, dev->param.total_bytes_per_chunk, &dummy, data); else if (tags) { - ops.mode = MTD_OOB_AUTO; + ops.mode = MTD_OPS_AUTO_OOB; ops.ooblen = packed_tags_size; ops.len = data ? dev->data_bytes_per_chunk : packed_tags_size; ops.ooboffs = 0; ops.datbuf = data; ops.oobbuf = local_spare; - retval = mtd->read_oob(mtd, addr, &ops); + retval = mtd_read_oob(mtd, addr, &ops); }

if (dev->param.inband_tags) { @@ -179,7 +179,7 @@ int nandmtd2_MarkNANDBlockBad(struct yaffs_dev *dev, int blockNo) "nandmtd2_MarkNANDBlockBad %d", blockNo);

retval = - mtd->block_markbad(mtd, + mtd_block_markbad(mtd, blockNo * dev->param.chunks_per_block * dev->data_bytes_per_chunk);

@@ -198,7 +198,7 @@ int nandmtd2_QueryNANDBlock(struct yaffs_dev *dev, int blockNo,

yaffs_trace(YAFFS_TRACE_MTD, "nandmtd2_QueryNANDBlock %d", blockNo); retval = - mtd->block_isbad(mtd, + mtd_block_isbad(mtd, blockNo * dev->param.chunks_per_block * dev->data_bytes_per_chunk);

diff --git a/include/linux/mtd/bbm.h b/include/linux/mtd/bbm.h index 8cbcdae..71292b1 100644 --- a/include/linux/mtd/bbm.h +++ b/include/linux/mtd/bbm.h @@ -81,32 +81,53 @@ struct nand_bbt_descr { #define NAND_BBT_LASTBLOCK 0x00000010 /* The bbt is at the given page, else we must scan for the bbt */ #define NAND_BBT_ABSPAGE 0x00000020 -/* The bbt is at the given page, else we must scan for the bbt */ -#define NAND_BBT_SEARCH 0x00000040 /* bbt is stored per chip on multichip devices */ #define NAND_BBT_PERCHIP 0x00000080 /* bbt has a version counter at offset veroffs */ #define NAND_BBT_VERSION 0x00000100 /* Create a bbt if none exists */ #define NAND_BBT_CREATE 0x00000200 +/* + * Create an empty BBT with no vendor information. Vendor's information may be + * unavailable, for example, if the NAND controller has a different data and OOB + * layout or if this information is already purged. Must be used in conjunction + * with NAND_BBT_CREATE. + */ +#define NAND_BBT_CREATE_EMPTY 0x00000400 /* Search good / bad pattern through all pages of a block */ -#define NAND_BBT_SCANALLPAGES 0x00000400 +#define NAND_BBT_SCANALLPAGES 0x00000800 /* Scan block empty during good / bad block scan */ -#define NAND_BBT_SCANEMPTY 0x00000800 +#define NAND_BBT_SCANEMPTY 0x00001000 /* Write bbt if neccecary */ -#define NAND_BBT_WRITE 0x00001000 +#define NAND_BBT_WRITE 0x00002000 /* Read and write back block contents when writing bbt */ -#define NAND_BBT_SAVECONTENT 0x00002000 +#define NAND_BBT_SAVECONTENT 0x00004000 /* Search good / bad pattern on the first and the second page */ -#define NAND_BBT_SCAN2NDPAGE 0x00004000 +#define NAND_BBT_SCAN2NDPAGE 0x00008000 /* Search good / bad pattern on the last page of the eraseblock */ -#define NAND_BBT_SCANLASTPAGE 0x00008000 -/* Chip stores bad block marker on BOTH 1st and 6th bytes of OOB */ -#define NAND_BBT_SCANBYTE1AND6 0x00100000 -/* The nand_bbt_descr was created dynamicaly and must be freed */ -#define NAND_BBT_DYNAMICSTRUCT 0x00200000 -/* The bad block table does not OOB for marker */ -#define NAND_BBT_NO_OOB 0x00400000 +#define NAND_BBT_SCANLASTPAGE 0x00010000 +/* + * Use a flash based bad block table. By default, OOB identifier is saved in + * OOB area. This option is passed to the default bad block table function. + */ +#define NAND_BBT_USE_FLASH 0x00020000 +/* + * Do not store flash based bad block table marker in the OOB area; store it + * in-band. + */ +#define NAND_BBT_NO_OOB 0x00040000 +/* + * Do not write new bad block markers to OOB; useful, e.g., when ECC covers + * entire spare area. Must be used with NAND_BBT_USE_FLASH. + */ +#define NAND_BBT_NO_OOB_BBM 0x00080000 + +/* + * Flag set by nand_create_default_bbt_descr(), marking that the nand_bbt_descr + * was allocated dynamicaly and must be freed in nand_release(). Has no meaning + * in nand_chip.bbt_options. + */ +#define NAND_BBT_DYNAMICSTRUCT 0x80000000

/* The maximum number of blocks to scan for a bbt */ #define NAND_BBT_SCAN_MAXBLOCKS 4 diff --git a/include/linux/mtd/mtd-abi.h b/include/linux/mtd/mtd-abi.h deleted file mode 100644 index 8bdd231..0000000 --- a/include/linux/mtd/mtd-abi.h +++ /dev/null @@ -1,158 +0,0 @@ -/* - * $Id: mtd-abi.h,v 1.13 2005/11/07 11:14:56 gleixner Exp $ - * - * Portions of MTD ABI definition which are shared by kernel and user space - */ - -#ifndef __MTD_ABI_H__ -#define __MTD_ABI_H__ - -#if 1 -#include <linux/compat.h> -#endif - -#include <linux/compiler.h> - -struct erase_info_user { - uint32_t start; - uint32_t length; -}; - -struct mtd_oob_buf { - uint32_t start; - uint32_t length; - unsigned char __user *ptr; -}; - -#define MTD_ABSENT 0 -#define MTD_RAM 1 -#define MTD_ROM 2 -#define MTD_NORFLASH 3 -#define MTD_NANDFLASH 4 -#define MTD_DATAFLASH 6 -#define MTD_UBIVOLUME 7 - -#define MTD_WRITEABLE 0x400 /* Device is writeable */ -#define MTD_BIT_WRITEABLE 0x800 /* Single bits can be flipped */ -#define MTD_NO_ERASE 0x1000 /* No erase necessary */ -#define MTD_STUPID_LOCK 0x2000 /* Always locked after reset */ - -/* Some common devices / combinations of capabilities */ -#define MTD_CAP_ROM 0 -#define MTD_CAP_RAM (MTD_WRITEABLE | MTD_BIT_WRITEABLE | MTD_NO_ERASE) -#define MTD_CAP_NORFLASH (MTD_WRITEABLE | MTD_BIT_WRITEABLE) -#define MTD_CAP_NANDFLASH (MTD_WRITEABLE) - -/* ECC byte placement */ -#define MTD_NANDECC_OFF 0 /* Switch off ECC (Not recommended) */ -#define MTD_NANDECC_PLACE 1 /* Use the given placement in the structure (YAFFS1 legacy mode) */ -#define MTD_NANDECC_AUTOPLACE 2 /* Use the default placement scheme */ -#define MTD_NANDECC_PLACEONLY 3 /* Use the given placement in the structure (Do not store ecc result on read) */ -#define MTD_NANDECC_AUTOPL_USR 4 /* Use the given autoplacement scheme rather than using the default */ - -/* OTP mode selection */ -#define MTD_OTP_OFF 0 -#define MTD_OTP_FACTORY 1 -#define MTD_OTP_USER 2 - -struct mtd_info_user { - uint8_t type; - uint32_t flags; - uint32_t size; /* Total size of the MTD */ - uint32_t erasesize; - uint32_t writesize; - uint32_t oobsize; /* Amount of OOB data per block (e.g. 16) */ - /* The below two fields are obsolete and broken, do not use them - * (TODO: remove at some point) */ - uint32_t ecctype; - uint32_t eccsize; -}; - -struct region_info_user { - uint32_t offset; /* At which this region starts, - * from the beginning of the MTD */ - uint32_t erasesize; /* For this region */ - uint32_t numblocks; /* Number of blocks in this region */ - uint32_t regionindex; -}; - -struct otp_info { - uint32_t start; - uint32_t length; - uint32_t locked; -}; - -#define MEMGETINFO _IOR('M', 1, struct mtd_info_user) -#define MEMERASE _IOW('M', 2, struct erase_info_user) -#define MEMWRITEOOB _IOWR('M', 3, struct mtd_oob_buf) -#define MEMREADOOB _IOWR('M', 4, struct mtd_oob_buf) -#define MEMLOCK _IOW('M', 5, struct erase_info_user) -#define MEMUNLOCK _IOW('M', 6, struct erase_info_user) -#define MEMGETREGIONCOUNT _IOR('M', 7, int) -#define MEMGETREGIONINFO _IOWR('M', 8, struct region_info_user) -#define MEMSETOOBSEL _IOW('M', 9, struct nand_oobinfo) -#define MEMGETOOBSEL _IOR('M', 10, struct nand_oobinfo) -#define MEMGETBADBLOCK _IOW('M', 11, loff_t) -#define MEMSETBADBLOCK _IOW('M', 12, loff_t) -#define OTPSELECT _IOR('M', 13, int) -#define OTPGETREGIONCOUNT _IOW('M', 14, int) -#define OTPGETREGIONINFO _IOW('M', 15, struct otp_info) -#define OTPLOCK _IOR('M', 16, struct otp_info) -#define ECCGETLAYOUT _IOR('M', 17, struct nand_ecclayout) -#define ECCGETSTATS _IOR('M', 18, struct mtd_ecc_stats) -#define MTDFILEMODE _IO('M', 19) - -/* - * Obsolete legacy interface. Keep it in order not to break userspace - * interfaces - */ -struct nand_oobinfo { - uint32_t useecc; - uint32_t eccbytes; - uint32_t oobfree[8][2]; - uint32_t eccpos[48]; -}; - -struct nand_oobfree { - uint32_t offset; - uint32_t length; -}; - -#define MTD_MAX_OOBFREE_ENTRIES 8 -/* - * ECC layout control structure. Exported to userspace for - * diagnosis and to allow creation of raw images - */ -struct nand_ecclayout { - uint32_t eccbytes; - uint32_t eccpos[128]; - uint32_t oobavail; - struct nand_oobfree oobfree[MTD_MAX_OOBFREE_ENTRIES]; -}; - -/** - * struct mtd_ecc_stats - error correction stats - * - * @corrected: number of corrected bits - * @failed: number of uncorrectable errors - * @badblocks: number of bad blocks in this partition - * @bbtblocks: number of blocks reserved for bad block tables - */ -struct mtd_ecc_stats { - uint32_t corrected; - uint32_t failed; - uint32_t badblocks; - uint32_t bbtblocks; -}; - -/* - * Read/write file modes for access to MTD - */ -enum mtd_file_modes { - MTD_MODE_NORMAL = MTD_OTP_OFF, - MTD_MODE_OTP_FACTORY = MTD_OTP_FACTORY, - MTD_MODE_OTP_USER = MTD_OTP_USER, - MTD_MODE_RAW, -}; - -#endif /* __MTD_ABI_H__ */ diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h index 141c960..6f44abd 100644 --- a/include/linux/mtd/mtd.h +++ b/include/linux/mtd/mtd.h @@ -9,7 +9,8 @@

#include <linux/types.h> #include <div64.h> -#include <linux/mtd/mtd-abi.h> +#include <mtd/mtd-abi.h> +#include <asm/errno.h>

#define MTD_CHAR_MAJOR 90 #define MTD_BLOCK_MAJOR 31 @@ -65,22 +66,6 @@ struct mtd_erase_region_info { unsigned long *lockmap; /* If keeping bitmap of locks */ };

-/* - * oob operation modes - * - * MTD_OOB_PLACE: oob data are placed at the given offset - * MTD_OOB_AUTO: oob data are automatically placed at the free areas - * which are defined by the ecclayout - * MTD_OOB_RAW: mode to read raw data+oob in one chunk. The oob data - * is inserted into the data. Thats a raw image of the - * flash contents. - */ -typedef enum { - MTD_OOB_PLACE, - MTD_OOB_AUTO, - MTD_OOB_RAW, -} mtd_oob_mode_t; - /** * struct mtd_oob_ops - oob operation operands * @mode: operation mode @@ -92,7 +77,7 @@ typedef enum { * @ooblen: number of oob bytes to write/read * @oobretlen: number of oob bytes written/read * @ooboffs: offset of oob data in the oob area (only relevant when - * mode = MTD_OOB_PLACE) + * mode = MTD_OPS_PLACE_OOB or MTD_OPS_RAW) * @datbuf: data buffer - if NULL only oob data are read/written * @oobbuf: oob data buffer * @@ -101,7 +86,7 @@ typedef enum { * OOB area. */ struct mtd_oob_ops { - mtd_oob_mode_t mode; + unsigned int mode; size_t len; size_t retlen; size_t ooblen; @@ -133,13 +118,25 @@ struct mtd_info { u_int32_t oobsize; /* Amount of OOB data per block (e.g. 16) */ u_int32_t oobavail; /* Available OOB bytes per block */

+ /* + * read ops return -EUCLEAN if max number of bitflips corrected on any + * one region comprising an ecc step equals or exceeds this value. + * Settable by driver, else defaults to ecc_strength. User can override + * in sysfs. N.B. The meaning of the -EUCLEAN return code has changed; + * see Documentation/ABI/testing/sysfs-class-mtd for more detail. + */ + unsigned int bitflip_threshold; + /* Kernel-only stuff starts here. */ const char *name; int index;

- /* ecc layout structure pointer - read only ! */ + /* ECC layout structure pointer - read only! */ struct nand_ecclayout *ecclayout;

+ /* max number of correctible bit errors per ecc step */ + unsigned int ecc_strength; + /* Data for variable erase regions. If numeraseregions is zero, * it means that the whole device has erasesize as given above. */ @@ -147,25 +144,17 @@ struct mtd_info { struct mtd_erase_region_info *eraseregions;

/* - * Erase is an asynchronous operation. Device drivers are supposed - * to call instr->callback() whenever the operation completes, even - * if it completes with a failure. - * Callers are supposed to pass a callback function and wait for it - * to be called before writing to the block. + * Do not call via these pointers, use corresponding mtd_*() + * wrappers instead. */ - int (*erase) (struct mtd_info *mtd, struct erase_info *instr); - - /* This stuff for eXecute-In-Place */ - /* phys is optional and may be set to NULL */ - int (*point) (struct mtd_info *mtd, loff_t from, size_t len, + int (*_erase) (struct mtd_info *mtd, struct erase_info *instr); + int (*_point) (struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, void **virt, phys_addr_t *phys); - - /* We probably shouldn't allow XIP if the unpoint isn't a NULL */ - void (*unpoint) (struct mtd_info *mtd, loff_t from, size_t len); - - - int (*read) (struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf); - int (*write) (struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen, const u_char *buf); + void (*_unpoint) (struct mtd_info *mtd, loff_t from, size_t len); + int (*_read) (struct mtd_info *mtd, loff_t from, size_t len, + size_t *retlen, u_char *buf); + int (*_write) (struct mtd_info *mtd, loff_t to, size_t len, + size_t *retlen, const u_char *buf);

/* In blackbox flight recorder like scenarios we want to make successful writes in interrupt context. panic_write() is only intended to be @@ -174,24 +163,35 @@ struct mtd_info { longer, this function can break locks and delay to ensure the write succeeds (but not sleep). */

- int (*panic_write) (struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen, const u_char *buf); + int (*_panic_write) (struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen, const u_char *buf);

- int (*read_oob) (struct mtd_info *mtd, loff_t from, + int (*_read_oob) (struct mtd_info *mtd, loff_t from, struct mtd_oob_ops *ops); - int (*write_oob) (struct mtd_info *mtd, loff_t to, + int (*_write_oob) (struct mtd_info *mtd, loff_t to, struct mtd_oob_ops *ops); - + int (*_get_fact_prot_info) (struct mtd_info *mtd, struct otp_info *buf, + size_t len); + int (*_read_fact_prot_reg) (struct mtd_info *mtd, loff_t from, + size_t len, size_t *retlen, u_char *buf); + int (*_get_user_prot_info) (struct mtd_info *mtd, struct otp_info *buf, + size_t len); + int (*_read_user_prot_reg) (struct mtd_info *mtd, loff_t from, + size_t len, size_t *retlen, u_char *buf); + int (*_write_user_prot_reg) (struct mtd_info *mtd, loff_t to, size_t len, + size_t *retlen, u_char *buf); + int (*_lock_user_prot_reg) (struct mtd_info *mtd, loff_t from, + size_t len); + void (*_sync) (struct mtd_info *mtd); + int (*_lock) (struct mtd_info *mtd, loff_t ofs, uint64_t len); + int (*_unlock) (struct mtd_info *mtd, loff_t ofs, uint64_t len); + int (*_block_isbad) (struct mtd_info *mtd, loff_t ofs); + int (*_block_markbad) (struct mtd_info *mtd, loff_t ofs); /* - * Methods to access the protection register area, present in some - * flash devices. The user data is one time programmable but the - * factory data is read only. + * If the driver is something smart, like UBI, it may need to maintain + * its own reference counting. The below functions are only for driver. */ - int (*get_fact_prot_info) (struct mtd_info *mtd, struct otp_info *buf, size_t len); - int (*read_fact_prot_reg) (struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf); - int (*get_user_prot_info) (struct mtd_info *mtd, struct otp_info *buf, size_t len); - int (*read_user_prot_reg) (struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf); - int (*write_user_prot_reg) (struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf); - int (*lock_user_prot_reg) (struct mtd_info *mtd, loff_t from, size_t len); + int (*_get_device) (struct mtd_info *mtd); + void (*_put_device) (struct mtd_info *mtd);

/* XXX U-BOOT XXX */ #if 0 @@ -201,18 +201,6 @@ struct mtd_info { */ int (*writev) (struct mtd_info *mtd, const struct kvec *vecs, unsigned long count, loff_t to, size_t *retlen); #endif - - /* Sync */ - void (*sync) (struct mtd_info *mtd); - - /* Chip-supported device locking */ - int (*lock) (struct mtd_info *mtd, loff_t ofs, uint64_t len); - int (*unlock) (struct mtd_info *mtd, loff_t ofs, uint64_t len); - - /* Bad block management functions */ - int (*block_isbad) (struct mtd_info *mtd, loff_t ofs); - int (*block_markbad) (struct mtd_info *mtd, loff_t ofs); - /* XXX U-BOOT XXX */ #if 0 struct notifier_block reboot_notifier; /* default mode before reboot */ @@ -227,15 +215,59 @@ struct mtd_info {

struct module *owner; int usecount; - - /* If the driver is something smart, like UBI, it may need to maintain - * its own reference counting. The below functions are only for driver. - * The driver may register its callbacks. These callbacks are not - * supposed to be called by MTD users */ - int (*get_device) (struct mtd_info *mtd); - void (*put_device) (struct mtd_info *mtd); };

+int mtd_erase(struct mtd_info *mtd, struct erase_info *instr); +int mtd_read(struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, + u_char *buf); +int mtd_write(struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen, + const u_char *buf); +int mtd_panic_write(struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen, + const u_char *buf); + +int mtd_read_oob(struct mtd_info *mtd, loff_t from, struct mtd_oob_ops *ops); + +static inline int mtd_write_oob(struct mtd_info *mtd, loff_t to, + struct mtd_oob_ops *ops) +{ + ops->retlen = ops->oobretlen = 0; + if (!mtd->_write_oob) + return -EOPNOTSUPP; + if (!(mtd->flags & MTD_WRITEABLE)) + return -EROFS; + return mtd->_write_oob(mtd, to, ops); +} + +int mtd_get_fact_prot_info(struct mtd_info *mtd, struct otp_info *buf, + size_t len); +int mtd_read_fact_prot_reg(struct mtd_info *mtd, loff_t from, size_t len, + size_t *retlen, u_char *buf); +int mtd_get_user_prot_info(struct mtd_info *mtd, struct otp_info *buf, + size_t len); +int mtd_read_user_prot_reg(struct mtd_info *mtd, loff_t from, size_t len, + size_t *retlen, u_char *buf); +int mtd_write_user_prot_reg(struct mtd_info *mtd, loff_t to, size_t len, + size_t *retlen, u_char *buf); +int mtd_lock_user_prot_reg(struct mtd_info *mtd, loff_t from, size_t len); + +/* XXX U-BOOT XXX */ +#if 0 +int mtd_writev(struct mtd_info *mtd, const struct kvec *vecs, + unsigned long count, loff_t to, size_t *retlen); +#endif + +static inline void mtd_sync(struct mtd_info *mtd) +{ + if (mtd->_sync) + mtd->_sync(mtd); +} + +int mtd_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len); +int mtd_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len); +int mtd_is_locked(struct mtd_info *mtd, loff_t ofs, uint64_t len); +int mtd_block_isbad(struct mtd_info *mtd, loff_t ofs); +int mtd_block_markbad(struct mtd_info *mtd, loff_t ofs); + static inline uint32_t mtd_div_by_eb(uint64_t sz, struct mtd_info *mtd) { do_div(sz, mtd->erasesize); @@ -247,6 +279,16 @@ static inline uint32_t mtd_mod_by_eb(uint64_t sz, struct mtd_info *mtd) return do_div(sz, mtd->erasesize); }

+static inline int mtd_has_oob(const struct mtd_info *mtd) +{ + return mtd->_read_oob && mtd->_write_oob; +} + +static inline int mtd_can_have_bb(const struct mtd_info *mtd) +{ + return !!mtd->_block_isbad; +} + /* Kernel-side ioctl definitions */

extern int add_mtd_device(struct mtd_info *mtd); @@ -269,12 +311,6 @@ struct mtd_notifier {

extern void register_mtd_user (struct mtd_notifier *new); extern int unregister_mtd_user (struct mtd_notifier *old); - -int default_mtd_writev(struct mtd_info *mtd, const struct kvec *vecs, - unsigned long count, loff_t to, size_t *retlen); - -int default_mtd_readv(struct mtd_info *mtd, struct kvec *vecs, - unsigned long count, loff_t from, size_t *retlen); #endif

#ifdef CONFIG_MTD_PARTITIONS @@ -296,17 +332,34 @@ static inline void mtd_erase_callback(struct erase_info *instr) #define MTD_DEBUG_LEVEL3 (3) /* Noisy */

#ifdef CONFIG_MTD_DEBUG +#define pr_debug(args...) MTDDEBUG(MTD_DEBUG_LEVEL0, args) #define MTDDEBUG(n, args...) \ do { \ if (n <= CONFIG_MTD_DEBUG_VERBOSE) \ printk(KERN_INFO args); \ } while(0) #else /* CONFIG_MTD_DEBUG */ +#define pr_debug(args...) #define MTDDEBUG(n, args...) \ do { \ if (0) \ printk(KERN_INFO args); \ } while(0) #endif /* CONFIG_MTD_DEBUG */ +#define pr_info(args...) MTDDEBUG(MTD_DEBUG_LEVEL0, args) +#define pr_warn(args...) MTDDEBUG(MTD_DEBUG_LEVEL0, args) +#define pr_err(args...) MTDDEBUG(MTD_DEBUG_LEVEL0, args) + +static inline int mtd_is_bitflip(int err) { + return err == -EUCLEAN; +} + +static inline int mtd_is_eccerr(int err) { + return err == -EBADMSG; +} + +static inline int mtd_is_bitflip_or_eccerr(int err) { + return mtd_is_bitflip(err) || mtd_is_eccerr(err); +}

#endif /* __MTD_MTD_H__ */ diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h index e9e9045..2055584 100644 --- a/include/linux/mtd/nand.h +++ b/include/linux/mtd/nand.h @@ -46,7 +46,7 @@ extern void nand_wait_ready(struct mtd_info *mtd); * is supported now. If you add a chip with bigger oobsize/page * adjust this accordingly. */ -#define NAND_MAX_OOBSIZE 576 +#define NAND_MAX_OOBSIZE 640 #define NAND_MAX_PAGESIZE 8192

/* @@ -82,6 +82,8 @@ extern void nand_wait_ready(struct mtd_info *mtd); #define NAND_CMD_READID 0x90 #define NAND_CMD_ERASE2 0xd0 #define NAND_CMD_PARAM 0xec +#define NAND_CMD_GET_FEATURES 0xee +#define NAND_CMD_SET_FEATURES 0xef #define NAND_CMD_RESET 0xff

#define NAND_CMD_LOCK 0x2a @@ -142,7 +144,7 @@ typedef enum { #define NAND_ECC_READ 0 /* Reset Hardware ECC for write */ #define NAND_ECC_WRITE 1 -/* Enable Hardware ECC before syndrom is read back from flash */ +/* Enable Hardware ECC before syndrome is read back from flash */ #define NAND_ECC_READSYN 2

/* Bit mask for flags passed to do_nand_read_ecc */ @@ -153,9 +155,7 @@ typedef enum { * Option constants for bizarre disfunctionality and real * features. */ -/* Chip can not auto increment pages */ -#define NAND_NO_AUTOINCR 0x00000001 -/* Buswitdh is 16 bit */ +/* Buswidth is 16 bit */ #define NAND_BUSWIDTH_16 0x00000002 /* Device supports partial programming without padding */ #define NAND_NO_PADDING 0x00000004 @@ -179,12 +179,6 @@ typedef enum { * This happens with the Renesas AG-AND chips, possibly others. */ #define BBT_AUTO_REFRESH 0x00000080 -/* - * Chip does not require ready check on read. True - * for all large page devices, as they do not support - * autoincrement. - */ -#define NAND_NO_READRDY 0x00000100 /* Chip does not allow subpage writes */ #define NAND_NO_SUBPAGE_WRITE 0x00000200

@@ -202,34 +196,21 @@ typedef enum { (NAND_NO_PADDING | NAND_CACHEPRG | NAND_COPYBACK)

/* Macros to identify the above */ -#define NAND_CANAUTOINCR(chip) (!(chip->options & NAND_NO_AUTOINCR)) #define NAND_MUST_PAD(chip) (!(chip->options & NAND_NO_PADDING)) #define NAND_HAS_CACHEPROG(chip) ((chip->options & NAND_CACHEPRG)) #define NAND_HAS_COPYBACK(chip) ((chip->options & NAND_COPYBACK)) #define NAND_HAS_SUBPAGE_READ(chip) ((chip->options & NAND_SUBPAGE_READ))

/* Non chip related options */ -/* - * Use a flash based bad block table. OOB identifier is saved in OOB area. - * This option is passed to the default bad block table function. - */ -#define NAND_USE_FLASH_BBT 0x00010000 /* This option skips the bbt scan during initialization. */ -#define NAND_SKIP_BBTSCAN 0x00020000 +#define NAND_SKIP_BBTSCAN 0x00010000 /* * This option is defined if the board driver allocates its own buffers * (e.g. because it needs them DMA-coherent). */ -#define NAND_OWN_BUFFERS 0x00040000 +#define NAND_OWN_BUFFERS 0x00020000 /* Chip may not exist, so silence any errors in scan */ -#define NAND_SCAN_SILENT_NODEV 0x00080000 -/* - * If passed additionally to NAND_USE_FLASH_BBT then BBT code will not touch - * the OOB area. - */ -#define NAND_USE_FLASH_BBT_NO_OOB 0x00800000 -/* Create an empty BBT with no vendor information if the BBT is available */ -#define NAND_CREATE_EMPTY_BBT 0x01000000 +#define NAND_SCAN_SILENT_NODEV 0x00040000

/* Options set by nand scan */ /* bbt has already been read */ @@ -244,6 +225,21 @@ typedef enum { /* Keep gcc happy */ struct nand_chip;

+/* ONFI timing mode, used in both asynchronous and synchronous mode */ +#define ONFI_TIMING_MODE_0 (1 << 0) +#define ONFI_TIMING_MODE_1 (1 << 1) +#define ONFI_TIMING_MODE_2 (1 << 2) +#define ONFI_TIMING_MODE_3 (1 << 3) +#define ONFI_TIMING_MODE_4 (1 << 4) +#define ONFI_TIMING_MODE_5 (1 << 5) +#define ONFI_TIMING_MODE_UNKNOWN (1 << 6) + +/* ONFI feature address */ +#define ONFI_FEATURE_ADDR_TIMING_MODE 0x1 + +/* ONFI subfeature parameters length */ +#define ONFI_SUBFEATURE_PARAM_LEN 4 + struct nand_onfi_params { /* rev info and features block */ /* 'O' 'N' 'F' 'I' */ @@ -326,27 +322,32 @@ struct nand_hw_control { };

/** - * struct nand_ecc_ctrl - Control structure for ecc - * @mode: ecc mode - * @steps: number of ecc steps per page - * @size: data bytes per ecc step - * @bytes: ecc bytes per step - * @total: total number of ecc bytes per page - * @prepad: padding information for syndrome based ecc generators - * @postpad: padding information for syndrome based ecc generators + * struct nand_ecc_ctrl - Control structure for ECC + * @mode: ECC mode + * @steps: number of ECC steps per page + * @size: data bytes per ECC step + * @bytes: ECC bytes per step + * @strength: max number of correctible bits per ECC step + * @total: total number of ECC bytes per page + * @prepad: padding information for syndrome based ECC generators + * @postpad: padding information for syndrome based ECC generators * @layout: ECC layout control struct pointer - * @priv: pointer to private ecc control data - * @hwctl: function to control hardware ecc generator. Must only + * @priv: pointer to private ECC control data + * @hwctl: function to control hardware ECC generator. Must only * be provided if an hardware ECC is available - * @calculate: function for ecc calculation or readback from ecc hardware - * @correct: function for ecc correction, matching to ecc generator (sw/hw) + * @calculate: function for ECC calculation or readback from ECC hardware + * @correct: function for ECC correction, matching to ECC generator (sw/hw) * @read_page_raw: function to read a raw page without ECC * @write_page_raw: function to write a raw page without ECC - * @read_page: function to read a page according to the ecc generator - * requirements. - * @read_subpage: function to read parts of the page covered by ECC. - * @write_page: function to write a page according to the ecc generator + * @read_page: function to read a page according to the ECC generator + * requirements; returns maximum number of bitflips corrected in + * any single ECC step, 0 if bitflips uncorrectable, -EIO hw error + * @read_subpage: function to read parts of the page covered by ECC; + * returns same as read_page() + * @write_page: function to write a page according to the ECC generator * requirements. + * @write_oob_raw: function to write chip OOB data without ECC + * @read_oob_raw: function to read chip OOB data without ECC * @read_oob: function to read chip OOB data * @write_oob: function to write chip OOB data */ @@ -356,6 +357,7 @@ struct nand_ecc_ctrl { int size; int bytes; int total; + int strength; int prepad; int postpad; struct nand_ecclayout *layout; @@ -366,25 +368,28 @@ struct nand_ecc_ctrl { int (*correct)(struct mtd_info *mtd, uint8_t *dat, uint8_t *read_ecc, uint8_t *calc_ecc); int (*read_page_raw)(struct mtd_info *mtd, struct nand_chip *chip, - uint8_t *buf, int page); - void (*write_page_raw)(struct mtd_info *mtd, struct nand_chip *chip, - const uint8_t *buf); + uint8_t *buf, int oob_required, int page); + int (*write_page_raw)(struct mtd_info *mtd, struct nand_chip *chip, + const uint8_t *buf, int oob_required); int (*read_page)(struct mtd_info *mtd, struct nand_chip *chip, - uint8_t *buf, int page); + uint8_t *buf, int oob_required, int page); int (*read_subpage)(struct mtd_info *mtd, struct nand_chip *chip, uint32_t offs, uint32_t len, uint8_t *buf); - void (*write_page)(struct mtd_info *mtd, struct nand_chip *chip, - const uint8_t *buf); - int (*read_oob)(struct mtd_info *mtd, struct nand_chip *chip, int page, - int sndcmd); + int (*write_page)(struct mtd_info *mtd, struct nand_chip *chip, + const uint8_t *buf, int oob_required); + int (*write_oob_raw)(struct mtd_info *mtd, struct nand_chip *chip, + int page); + int (*read_oob_raw)(struct mtd_info *mtd, struct nand_chip *chip, + int page); + int (*read_oob)(struct mtd_info *mtd, struct nand_chip *chip, int page); int (*write_oob)(struct mtd_info *mtd, struct nand_chip *chip, int page); };

/** * struct nand_buffers - buffer structure for read/write - * @ecccalc: buffer for calculated ecc - * @ecccode: buffer for ecc read from flash + * @ecccalc: buffer for calculated ECC + * @ecccode: buffer for ECC read from flash * @databuf: buffer for data - dynamically sized * * Do not change the order of buffers. databuf and oobrbuf must be in @@ -418,7 +423,7 @@ struct nand_buffers { * mtd->oobsize, mtd->writesize and so on. * @id_data contains the 8 bytes values of NAND_CMD_READID. * Return with the bus width. - * @dev_ready: [BOARDSPECIFIC] hardwarespecific function for accesing + * @dev_ready: [BOARDSPECIFIC] hardwarespecific function for accessing * device ready/busy line. If set to NULL no access to * ready/busy is available and the ready/busy information * is read from the chip status register. @@ -426,17 +431,17 @@ struct nand_buffers { * commands to the chip. * @waitfunc: [REPLACEABLE] hardwarespecific function for wait on * ready. - * @ecc: [BOARDSPECIFIC] ecc control ctructure + * @ecc: [BOARDSPECIFIC] ECC control structure * @buffers: buffer structure for read/write * @hwcontrol: platform-specific hardware control structure - * @ops: oob operation operands * @erase_cmd: [INTERN] erase command write function, selectable due * to AND support. * @scan_bbt: [REPLACEABLE] function to scan bad block table * @chip_delay: [BOARDSPECIFIC] chip dependent delay for transferring * data from array to read regs (tR). * @state: [INTERN] the current state of the NAND device - * @oob_poi: poison value buffer + * @oob_poi: "poison value buffer," used for laying out OOB data + * before writing * @page_shift: [INTERN] number of address bits in a page (column * address bits). * @phys_erase_shift: [INTERN] number of address bits in a physical eraseblock @@ -445,10 +450,14 @@ struct nand_buffers { * @options: [BOARDSPECIFIC] various chip options. They can partly * be set to inform nand_scan about special functionality. * See the defines for further explanation. + * @bbt_options: [INTERN] bad block specific options. All options used + * here must come from bbm.h. By default, these options + * will be copied to the appropriate nand_bbt_descr's. * @badblockpos: [INTERN] position of the bad block marker in the oob * area. - * @badblockbits: [INTERN] number of bits to left-shift the bad block - * number + * @badblockbits: [INTERN] minimum number of set bits in a good block's + * bad block marker position; i.e., BBM == 11110111b is + * not bad when badblockbits == 7 * @cellinfo: [INTERN] MLC/multichip data from chip ident * @numchips: [INTERN] number of physical chips * @chipsize: [INTERN] the size of one chip for multichip arrays @@ -460,7 +469,9 @@ struct nand_buffers { * non 0 if ONFI supported. * @onfi_params: [INTERN] holds the ONFI page parameter when ONFI is * supported, 0 otherwise. - * @ecclayout: [REPLACEABLE] the default ecc placement scheme + * @onfi_set_features [REPLACEABLE] set the features for ONFI nand + * @onfi_get_features [REPLACEABLE] get the features for ONFI nand + * @ecclayout: [REPLACEABLE] the default ECC placement scheme * @bbt: [INTERN] bad block table pointer * @bbt_td: [REPLACEABLE] bad block table descriptor for flash * lookup. @@ -468,9 +479,9 @@ struct nand_buffers { * @badblock_pattern: [REPLACEABLE] bad block scan pattern used for initial * bad block scan. * @controller: [REPLACEABLE] a pointer to a hardware controller - * structure which is shared among multiple independend + * structure which is shared among multiple independent * devices. - * @priv: [OPTIONAL] pointer to private chip date + * @priv: [OPTIONAL] pointer to private chip data * @errstat: [OPTIONAL] hardware specific function to perform * additional error status checks (determine if errors are * correctable). @@ -501,10 +512,16 @@ struct nand_chip { int (*errstat)(struct mtd_info *mtd, struct nand_chip *this, int state, int status, int page); int (*write_page)(struct mtd_info *mtd, struct nand_chip *chip, - const uint8_t *buf, int page, int cached, int raw); + const uint8_t *buf, int oob_required, int page, + int cached, int raw); + int (*onfi_set_features)(struct mtd_info *mtd, struct nand_chip *chip, + int feature_addr, uint8_t *subfeature_para); + int (*onfi_get_features)(struct mtd_info *mtd, struct nand_chip *chip, + int feature_addr, uint8_t *subfeature_para);

int chip_delay; unsigned int options; + unsigned int bbt_options;

int page_shift; int phys_erase_shift; @@ -534,8 +551,6 @@ struct nand_chip { struct nand_buffers *buffers; struct nand_hw_control hwcontrol;

- struct mtd_oob_ops ops; - uint8_t *bbt; struct nand_bbt_descr *bbt_td; struct nand_bbt_descr *bbt_md; @@ -557,6 +572,8 @@ struct nand_chip { #define NAND_MFR_HYNIX 0xad #define NAND_MFR_MICRON 0x2c #define NAND_MFR_AMD 0x01 +#define NAND_MFR_MACRONIX 0xc2 +#define NAND_MFR_EON 0x92

/** * struct nand_flash_dev - NAND Flash Device ID Structure @@ -615,9 +632,9 @@ extern int nand_do_read(struct mtd_info *mtd, loff_t from, size_t len, * @partitions: mtd partition list * @chip_delay: R/B delay value in us * @options: Option flags, e.g. 16bit buswidth - * @ecclayout: ecc layout info structure + * @bbt_options: BBT option flags, e.g. NAND_BBT_USE_FLASH + * @ecclayout: ECC layout info structure * @part_probe_types: NULL-terminated array of probe types - * @priv: hardware controller specific settings */ struct platform_nand_chip { int nr_chips; @@ -627,8 +644,8 @@ struct platform_nand_chip { struct nand_ecclayout *ecclayout; int chip_delay; unsigned int options; + unsigned int bbt_options; const char **part_probe_types; - void *priv; };

/* Keep gcc happy */ @@ -650,6 +667,7 @@ struct platform_nand_ctrl { int (*dev_ready)(struct mtd_info *mtd); void (*select_chip)(struct mtd_info *mtd, int chip); void (*cmd_ctrl)(struct mtd_info *mtd, int dat, unsigned int ctrl); + unsigned char (*read_byte)(struct mtd_info *mtd); void *priv; };

@@ -679,4 +697,23 @@ void nand_read_buf(struct mtd_info *mtd, uint8_t *buf, int len); void nand_read_buf16(struct mtd_info *mtd, uint8_t *buf, int len); uint8_t nand_read_byte(struct mtd_info *mtd);

+/* return the supported asynchronous timing mode. */ + +#ifdef CONFIG_SYS_NAND_ONFI_DETECTION +static inline int onfi_get_async_timing_mode(struct nand_chip *chip) +{ + if (!chip->onfi_version) + return ONFI_TIMING_MODE_UNKNOWN; + return le16_to_cpu(chip->onfi_params.async_timing_mode); +} + +/* return the supported synchronous timing mode. */ +static inline int onfi_get_sync_timing_mode(struct nand_chip *chip) +{ + if (!chip->onfi_version) + return ONFI_TIMING_MODE_UNKNOWN; + return le16_to_cpu(chip->onfi_params.src_sync_timing_mode); +} +#endif + #endif /* __LINUX_MTD_NAND_H */ diff --git a/include/linux/string.h b/include/linux/string.h index e9b134d..8e44855 100644 --- a/include/linux/string.h +++ b/include/linux/string.h @@ -85,6 +85,9 @@ extern int memcmp(const void *,const void *,__kernel_size_t); #ifndef __HAVE_ARCH_MEMCHR extern void * memchr(const void *,int,__kernel_size_t); #endif +#ifndef __HAVE_ARCH_MEMCHR_INV +void *memchr_inv(const void *, int, size_t); +#endif

#ifdef __cplusplus } diff --git a/include/mtd/mtd-abi.h b/include/mtd/mtd-abi.h new file mode 100644 index 0000000..d51c1ab --- /dev/null +++ b/include/mtd/mtd-abi.h @@ -0,0 +1,209 @@ +/* + * $Id: mtd-abi.h,v 1.13 2005/11/07 11:14:56 gleixner Exp $ + * + * Portions of MTD ABI definition which are shared by kernel and user space + */ + +#ifndef __MTD_ABI_H__ +#define __MTD_ABI_H__ + +#if 1 +#include <linux/compat.h> +#endif + +#include <linux/compiler.h> + +struct erase_info_user { + uint32_t start; + uint32_t length; +}; + +struct mtd_oob_buf { + uint32_t start; + uint32_t length; + unsigned char __user *ptr; +}; + +/* + * MTD operation modes + * + * @MTD_OPS_PLACE_OOB: OOB data are placed at the given offset (default) + * @MTD_OPS_AUTO_OOB: OOB data are automatically placed at the free areas + * which are defined by the internal ecclayout + * @MTD_OPS_RAW: data are transferred as-is, with no error correction; + * this mode implies %MTD_OPS_PLACE_OOB + * + * These modes can be passed to ioctl(MEMWRITE) and are also used internally. + * See notes on "MTD file modes" for discussion on %MTD_OPS_RAW vs. + * %MTD_FILE_MODE_RAW. + */ +enum { + MTD_OPS_PLACE_OOB = 0, + MTD_OPS_AUTO_OOB = 1, + MTD_OPS_RAW = 2, +}; + +#define MTD_ABSENT 0 +#define MTD_RAM 1 +#define MTD_ROM 2 +#define MTD_NORFLASH 3 +#define MTD_NANDFLASH 4 +#define MTD_DATAFLASH 6 +#define MTD_UBIVOLUME 7 + +#define MTD_WRITEABLE 0x400 /* Device is writeable */ +#define MTD_BIT_WRITEABLE 0x800 /* Single bits can be flipped */ +#define MTD_NO_ERASE 0x1000 /* No erase necessary */ +#define MTD_STUPID_LOCK 0x2000 /* Always locked after reset */ + +/* Some common devices / combinations of capabilities */ +#define MTD_CAP_ROM 0 +#define MTD_CAP_RAM (MTD_WRITEABLE | MTD_BIT_WRITEABLE | MTD_NO_ERASE) +#define MTD_CAP_NORFLASH (MTD_WRITEABLE | MTD_BIT_WRITEABLE) +#define MTD_CAP_NANDFLASH (MTD_WRITEABLE) + +/* ECC byte placement */ +#define MTD_NANDECC_OFF 0 /* Switch off ECC (Not recommended) */ +#define MTD_NANDECC_PLACE 1 /* Use the given placement in the structure (YAFFS1 legacy mode) */ +#define MTD_NANDECC_AUTOPLACE 2 /* Use the default placement scheme */ +#define MTD_NANDECC_PLACEONLY 3 /* Use the given placement in the structure (Do not store ecc result on read) */ +#define MTD_NANDECC_AUTOPL_USR 4 /* Use the given autoplacement scheme rather than using the default */ + +/* OTP mode selection */ +#define MTD_OTP_OFF 0 +#define MTD_OTP_FACTORY 1 +#define MTD_OTP_USER 2 + +struct mtd_info_user { + uint8_t type; + uint32_t flags; + uint32_t size; /* Total size of the MTD */ + uint32_t erasesize; + uint32_t writesize; + uint32_t oobsize; /* Amount of OOB data per block (e.g. 16) */ + /* The below two fields are obsolete and broken, do not use them + * (TODO: remove at some point) */ + uint32_t ecctype; + uint32_t eccsize; +}; + +struct region_info_user { + uint32_t offset; /* At which this region starts, + * from the beginning of the MTD */ + uint32_t erasesize; /* For this region */ + uint32_t numblocks; /* Number of blocks in this region */ + uint32_t regionindex; +}; + +struct otp_info { + uint32_t start; + uint32_t length; + uint32_t locked; +}; + +/* Get basic MTD characteristics info (better to use sysfs) */ +#define MEMGETINFO _IOR('M', 1, struct mtd_info_user) +/* Erase segment of MTD */ +#define MEMERASE _IOW('M', 2, struct erase_info_user) +/* Write out-of-band data from MTD */ +#define MEMWRITEOOB _IOWR('M', 3, struct mtd_oob_buf) +/* Read out-of-band data from MTD */ +#define MEMREADOOB _IOWR('M', 4, struct mtd_oob_buf) +/* Lock a chip (for MTD that supports it) */ +#define MEMLOCK _IOW('M', 5, struct erase_info_user) +/* Unlock a chip (for MTD that supports it) */ +#define MEMUNLOCK _IOW('M', 6, struct erase_info_user) +/* Get the number of different erase regions */ +#define MEMGETREGIONCOUNT _IOR('M', 7, int) +/* Get information about the erase region for a specific index */ +#define MEMGETREGIONINFO _IOWR('M', 8, struct region_info_user) +/* Get info about OOB modes (e.g., RAW, PLACE, AUTO) - legacy interface */ +#define MEMSETOOBSEL _IOW('M', 9, struct nand_oobinfo) +#define MEMGETOOBSEL _IOR('M', 10, struct nand_oobinfo) +/* Check if an eraseblock is bad */ +#define MEMGETBADBLOCK _IOW('M', 11, loff_t) +/* Mark an eraseblock as bad */ +#define MEMSETBADBLOCK _IOW('M', 12, loff_t) +/* Set OTP (One-Time Programmable) mode (factory vs. user) */ +#define OTPSELECT _IOR('M', 13, int) +/* Get number of OTP (One-Time Programmable) regions */ +#define OTPGETREGIONCOUNT _IOW('M', 14, int) +/* Get all OTP (One-Time Programmable) info about MTD */ +#define OTPGETREGIONINFO _IOW('M', 15, struct otp_info) +/* Lock a given range of user data (must be in mode %MTD_FILE_MODE_OTP_USER) */ +#define OTPLOCK _IOR('M', 16, struct otp_info) +/* Get ECC layout (deprecated) */ +#define ECCGETLAYOUT _IOR('M', 17, struct nand_ecclayout) +/* Get statistics about corrected/uncorrected errors */ +#define ECCGETSTATS _IOR('M', 18, struct mtd_ecc_stats) +/* Set MTD mode on a per-file-descriptor basis (see "MTD file modes") */ +#define MTDFILEMODE _IO('M', 19) + +/* + * Obsolete legacy interface. Keep it in order not to break userspace + * interfaces + */ +struct nand_oobinfo { + uint32_t useecc; + uint32_t eccbytes; + uint32_t oobfree[8][2]; + uint32_t eccpos[48]; +}; + +struct nand_oobfree { + uint32_t offset; + uint32_t length; +}; + +#define MTD_MAX_OOBFREE_ENTRIES 8 +/* + * ECC layout control structure. Exported to userspace for + * diagnosis and to allow creation of raw images + */ +struct nand_ecclayout { + uint32_t eccbytes; + uint32_t eccpos[128]; + uint32_t oobavail; + struct nand_oobfree oobfree[MTD_MAX_OOBFREE_ENTRIES]; +}; + +/** + * struct mtd_ecc_stats - error correction stats + * + * @corrected: number of corrected bits + * @failed: number of uncorrectable errors + * @badblocks: number of bad blocks in this partition + * @bbtblocks: number of blocks reserved for bad block tables + */ +struct mtd_ecc_stats { + uint32_t corrected; + uint32_t failed; + uint32_t badblocks; + uint32_t bbtblocks; +}; + +/* + * MTD file modes - for read/write access to MTD + * + * @MTD_FILE_MODE_NORMAL: OTP disabled, ECC enabled + * @MTD_FILE_MODE_OTP_FACTORY: OTP enabled in factory mode + * @MTD_FILE_MODE_OTP_USER: OTP enabled in user mode + * @MTD_FILE_MODE_RAW: OTP disabled, ECC disabled + * + * These modes can be set via ioctl(MTDFILEMODE). The mode mode will be retained + * separately for each open file descriptor. + * + * Note: %MTD_FILE_MODE_RAW provides the same functionality as %MTD_OPS_RAW - + * raw access to the flash, without error correction or autoplacement schemes. + * Wherever possible, the MTD_OPS_* mode will override the MTD_FILE_MODE_* mode + * (e.g., when using ioctl(MEMWRITE)), but in some cases, the MTD_FILE_MODE is + * used out of necessity (e.g., `write()', ioctl(MEMWRITEOOB64)). + */ +enum mtd_file_modes { + MTD_MODE_NORMAL = MTD_OTP_OFF, + MTD_MODE_OTP_FACTORY = MTD_OTP_FACTORY, + MTD_MODE_OTP_USER = MTD_OTP_USER, + MTD_MODE_RAW, +}; + +#endif /* __MTD_ABI_H__ */ diff --git a/include/nand.h b/include/nand.h index dded4e2..e61087a 100644 --- a/include/nand.h +++ b/include/nand.h @@ -55,17 +55,17 @@ extern nand_info_t nand_info[];

static inline int nand_read(nand_info_t *info, loff_t ofs, size_t *len, u_char *buf) { - return info->read(info, ofs, *len, (size_t *)len, buf); + return mtd_read(info, ofs, *len, (size_t *)len, buf); }

static inline int nand_write(nand_info_t *info, loff_t ofs, size_t *len, u_char *buf) { - return info->write(info, ofs, *len, (size_t *)len, buf); + return mtd_write(info, ofs, *len, (size_t *)len, buf); }

static inline int nand_block_isbad(nand_info_t *info, loff_t ofs) { - return info->block_isbad(info, ofs); + return mtd_block_isbad(info, ofs); }

static inline int nand_erase(nand_info_t *info, loff_t off, size_t size) @@ -77,7 +77,7 @@ static inline int nand_erase(nand_info_t *info, loff_t off, size_t size) instr.len = size; instr.callback = 0;

- return info->erase(info, &instr); + return mtd_erase(info, &instr); }

diff --git a/lib/string.c b/lib/string.c index 09dfae0..3a82efa 100644 --- a/lib/string.c +++ b/lib/string.c @@ -617,3 +617,62 @@ void *memchr(const void *s, int c, size_t n) }

#endif +#ifndef __HAVE_ARCH_MEMCHR_INV +static void *check_bytes8(const u8 *start, u8 value, unsigned int bytes) +{ + while (bytes) { + if (*start != value) + return (void *)start; + start++; + bytes--; + } + return NULL; +} +/** + * memchr_inv - Find an unmatching character in an area of memory. + * @start: The memory area + * @c: Find a character other than c + * @bytes: The size of the area. + * + * returns the address of the first character other than @c, or %NULL + * if the whole buffer contains just @c. + */ +void *memchr_inv(const void *start, int c, size_t bytes) +{ + u8 value = c; + u64 value64; + unsigned int words, prefix; + + if (bytes <= 16) + return check_bytes8(start, value, bytes); + + value64 = value; + value64 |= value64 << 8; + value64 |= value64 << 16; + value64 |= value64 << 32; + + prefix = (unsigned long)start % 8; + if (prefix) { + u8 *r; + + prefix = 8 - prefix; + r = check_bytes8(start, value, prefix); + if (r) + return r; + start += prefix; + bytes -= prefix; + } + + words = bytes / 8; + + while (words) { + if (*(u64 *)start != value64) + return check_bytes8(start, value, 8); + start += 8; + words--; + } + + return check_bytes8(start, value, bytes % 8); +} +#endif +