mtd: resync with Linux-3.7.1
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>
[scottwood@freescale.com: some eccstrength and build fixes]
Signed-off-by: Scott Wood <scottwood@freescale.com>
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 @@
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 @@
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 @@
/* 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 @@
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 @@
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 @@
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 @@
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 @@
* 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 @@
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 @@
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 @@
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 @@
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 @@
else
size = len;
- err = subdev->lock(subdev, ofs, size);
+ err = mtd_lock(subdev, ofs, size);
if (err)
break;
@@ -467,9 +442,6 @@
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 @@
else
size = len;
- err = subdev->unlock(subdev, ofs, size);
+ err = mtd_unlock(subdev, ofs, size);
if (err)
break;
@@ -507,7 +479,7 @@
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 @@
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 @@
continue;
}
- res = subdev->block_isbad(subdev, ofs);
+ res = mtd_block_isbad(subdev, ofs);
break;
}
@@ -542,12 +511,9 @@
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 @@
continue;
}
- err = subdev->block_markbad(subdev, ofs);
+ err = mtd_block_markbad(subdev, ofs);
if (!err)
mtd->ecc_stats.badblocks++;
break;
@@ -609,14 +575,14 @@
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 @@
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 @@
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 @@
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 @@
}
}
#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 cbfc679..9dfe7bb 100644
--- a/drivers/mtd/mtdpart.c
+++ b/drivers/mtd/mtdpart.c
@@ -52,17 +52,11 @@
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 @@
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 @@
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 @@
{
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 @@
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 @@
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 @@
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 @@
slave->mtd.name = part->name;
slave->mtd.owner = master->owner;
- slave->mtd.read = part_read;
- slave->mtd.write = part_write;
+ 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;
+ 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;
@@ -416,12 +367,11 @@
}
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..3bfbaf8 100644
--- a/drivers/mtd/nand/atmel_nand.c
+++ b/drivers/mtd/nand/atmel_nand.c
@@ -489,7 +489,7 @@
}
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 @@
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 @@
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 @@
}
}
chip->write_buf(mtd, chip->oob_poi, mtd->oobsize);
+out:
+ return 0;
}
static void atmel_pmecc_core_init(struct mtd_info *mtd)
@@ -706,6 +709,7 @@
nand->ecc.read_page = atmel_nand_pmecc_read_page;
nand->ecc.write_page = atmel_nand_pmecc_write_page;
+ nand->ecc.strength = cap;
atmel_pmecc_core_init(mtd);
@@ -775,9 +779,10 @@
* 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/bfin_nand.c b/drivers/mtd/nand/bfin_nand.c
index c7ddbb2..7e755e8 100644
--- a/drivers/mtd/nand/bfin_nand.c
+++ b/drivers/mtd/nand/bfin_nand.c
@@ -374,9 +374,11 @@
if (!NAND_IS_512()) {
chip->ecc.bytes = 3;
chip->ecc.size = 256;
+ chip->ecc.strength = 1;
} else {
chip->ecc.bytes = 6;
chip->ecc.size = 512;
+ chip->ecc.strength = 2;
}
chip->ecc.mode = NAND_ECC_HW;
chip->ecc.calculate = bfin_nfc_calculate_ecc;
diff --git a/drivers/mtd/nand/davinci_nand.c b/drivers/mtd/nand/davinci_nand.c
index e8506dd..90f5985 100644
--- a/drivers/mtd/nand/davinci_nand.c
+++ b/drivers/mtd/nand/davinci_nand.c
@@ -607,12 +607,13 @@
{
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;
nand->ecc.size = 512;
nand->ecc.bytes = 3;
+ nand->ecc.strength = 1;
nand->ecc.calculate = nand_davinci_calculate_ecc;
nand->ecc.correct = nand_davinci_correct_data;
nand->ecc.hwctl = nand_davinci_enable_hwecc;
@@ -623,6 +624,7 @@
nand->ecc.mode = NAND_ECC_HW_OOB_FIRST;
nand->ecc.size = 512;
nand->ecc.bytes = 10;
+ nand->ecc.strength = 4;
nand->ecc.calculate = nand_davinci_4bit_calculate_ecc;
nand->ecc.correct = nand_davinci_4bit_correct_data;
nand->ecc.hwctl = nand_davinci_4bit_enable_hwecc;
diff --git a/drivers/mtd/nand/diskonchip.c b/drivers/mtd/nand/diskonchip.c
index edf3a099..4cd741e 100644
--- a/drivers/mtd/nand/diskonchip.c
+++ b/drivers/mtd/nand/diskonchip.c
@@ -134,7 +134,7 @@
/*
* 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 @@
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 @@
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 @@
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 @@
/* 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 +1658,8 @@
nand->ecc.mode = NAND_ECC_HW_SYNDROME;
nand->ecc.size = 512;
nand->ecc.bytes = 6;
- nand->options = NAND_USE_FLASH_BBT;
+ nand->ecc.strength = 2;
+ 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 fb34d12..0fa776a 100644
--- a/drivers/mtd/nand/fsl_elbc_nand.c
+++ b/drivers/mtd/nand/fsl_elbc_nand.c
@@ -640,9 +640,8 @@
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 @@
/* 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 @@
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;
@@ -769,6 +769,7 @@
nand->ecc.size = 512;
nand->ecc.bytes = 3;
nand->ecc.steps = 1;
+ nand->ecc.strength = 1;
} else {
/* otherwise fall back to default software ECC */
nand->ecc.mode = NAND_ECC_SOFT;
diff --git a/drivers/mtd/nand/fsl_ifc_nand.c b/drivers/mtd/nand/fsl_ifc_nand.c
index 49cfb33..439822c 100644
--- a/drivers/mtd/nand/fsl_ifc_nand.c
+++ b/drivers/mtd/nand/fsl_ifc_nand.c
@@ -686,9 +686,8 @@
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 @@
/* 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)
@@ -858,8 +858,8 @@
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;
@@ -890,11 +890,13 @@
bbt_mirror_descr.offs = 0;
}
+ nand->ecc.strength = 4;
priv->bufnum_mask = 15;
break;
case CSOR_NAND_PGS_2K:
layout = &oob_2048_ecc4;
+ nand->ecc.strength = 4;
priv->bufnum_mask = 3;
break;
@@ -902,8 +904,10 @@
if ((csor & CSOR_NAND_ECC_MODE_MASK) ==
CSOR_NAND_ECC_MODE_4) {
layout = &oob_4096_ecc4;
+ nand->ecc.strength = 4;
} else {
layout = &oob_4096_ecc8;
+ nand->ecc.strength = 8;
nand->ecc.bytes = 16;
}
diff --git a/drivers/mtd/nand/fsmc_nand.c b/drivers/mtd/nand/fsmc_nand.c
index 7a61d88..fab2aeb 100644
--- a/drivers/mtd/nand/fsmc_nand.c
+++ b/drivers/mtd/nand/fsmc_nand.c
@@ -341,6 +341,7 @@
* @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 @@
* 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;
@@ -452,6 +453,7 @@
switch (fsmc_version) {
case FSMC_VER8:
nand->ecc.bytes = 13;
+ nand->ecc.strength = 8;
nand->ecc.correct = fsmc_bch8_correct_data;
nand->ecc.read_page = fsmc_read_page_hwecc;
if (mtd->writesize == 512)
@@ -466,6 +468,7 @@
break;
default:
nand->ecc.bytes = 3;
+ nand->ecc.strength = 1;
nand->ecc.layout = &fsmc_ecc1_layout;
nand->ecc.correct = nand_correct_data;
break;
diff --git a/drivers/mtd/nand/jz4740_nand.c b/drivers/mtd/nand/jz4740_nand.c
index 3ec34f3..a691fbc 100644
--- a/drivers/mtd/nand/jz4740_nand.c
+++ b/drivers/mtd/nand/jz4740_nand.c
@@ -253,6 +253,7 @@
nand->ecc.mode = NAND_ECC_HW_OOB_FIRST;
nand->ecc.size = CONFIG_SYS_NAND_ECCSIZE;
nand->ecc.bytes = CONFIG_SYS_NAND_ECCBYTES;
+ nand->ecc.strength = 4;
nand->ecc.layout = &qi_lb60_ecclayout_2gb;
nand->chip_delay = 50;
nand->options = NAND_USE_FLASH_BBT;
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 @@
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 eeba521..ac435f2 100644
--- a/drivers/mtd/nand/mxc_nand.c
+++ b/drivers/mtd/nand/mxc_nand.c
@@ -396,7 +396,7 @@
#if defined(MXC_NFC_V2_1) || defined(MXC_NFC_V3_2)
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;
@@ -450,6 +450,7 @@
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;
@@ -494,6 +495,7 @@
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;
@@ -583,9 +585,10 @@
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;
@@ -619,11 +622,13 @@
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;
@@ -662,6 +667,7 @@
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,
@@ -1188,7 +1194,7 @@
#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
@@ -1236,6 +1242,13 @@
this->ecc.mode = NAND_ECC_HW;
}
+ if (this->ecc.mode == NAND_ECC_HW) {
+ if (is_mxc_nfc_1())
+ this->ecc.strength = 1;
+ else
+ this->ecc.strength = 4;
+ }
+
host->pagesize_2k = 0;
this->ecc.size = 512;
diff --git a/drivers/mtd/nand/mxs_nand.c b/drivers/mtd/nand/mxs_nand.c
index e38e151..7ba48c1 100644
--- a/drivers/mtd/nand/mxs_nand.c
+++ b/drivers/mtd/nand/mxs_nand.c
@@ -546,7 +546,8 @@
* 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 @@
/*
* 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 @@
rtn:
mxs_nand_return_dma_descs(nand_info);
+ return 0;
}
/*
@@ -763,7 +766,7 @@
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 @@
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;
@@ -866,7 +869,7 @@
* what to do.
*/
static int mxs_nand_ecc_read_oob(struct mtd_info *mtd, struct nand_chip *nand,
- int page, int cmd)
+ int page)
{
struct mxs_nand_info *nand_info = nand->priv;
@@ -997,19 +1000,19 @@
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. */
@@ -1163,6 +1166,7 @@
nand->ecc.mode = NAND_ECC_HW;
nand->ecc.bytes = 9;
nand->ecc.size = 512;
+ nand->ecc.strength = 8;
return 0;
diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c
index 3d84659..9e05cef 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 @@
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 @@
/**
* 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 @@
/**
* 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 @@
/**
* 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 @@
/**
* 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 @@
/**
* 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 @@
/**
* 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 @@
/**
* 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 @@
/**
* 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 @@
/**
* 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 @@
/**
* 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 @@
/**
* 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 @@
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 @@
/**
* 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 @@
/**
* 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 @@
/**
* 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 @@
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 @@
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 @@
/**
* 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 @@
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 @@
}
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 @@
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 @@
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 @@
/**
* 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 @@
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 @@
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 @@
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 @@
}
}
- /* 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 @@
/**
* 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_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 @@
}
/**
- * 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 @@
}
/**
- * 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 @@
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 @@
}
/**
- * 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 @@
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 @@
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 @@
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 @@
}
/**
- * 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 @@
}
/**
- * 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 @@
}
/**
- * 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 @@
}
/**
- * 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 @@
}
/**
- * 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 @@
buf = ops->datbuf;
oob = ops->oobbuf;
+ oob_required = oob ? 1 : 0;
while (1) {
WATCHDOG_RESET();
@@ -1232,41 +1259,46 @@
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 @@
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 @@
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 @@
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 @@
/**
* 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 @@
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 @@
}
/**
- * 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 @@
}
/**
- * 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);
+ stats = mtd->ecc_stats;
+
- if (ops->mode == MTD_OOB_AUTO)
+ if (ops->mode == MTD_OPS_AUTO_OOB)
len = chip->ecc.layout->oobavail;
else
len = mtd->oobsize;
@@ -1558,24 +1559,17 @@
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 @@
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 @@
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 @@
/**
- * 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 @@
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 @@
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 @@
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 @@
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 @@
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 @@
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 @@
#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 @@
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 @@
(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 @@
int cached = writelen > bytes && page != blockmask;
uint8_t *wbuf = buf;
- /* Partial page write ? */
+ /* Partial page write? */
if (unlikely(column || writelen < mtd->writesize)) {
cached = 0;
bytes = min_t(int, bytes - column, (int) writelen);
@@ -1984,12 +2007,15 @@
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 @@
/**
* 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 @@
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 @@
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 @@
/**
* 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 @@
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 @@
}
/**
- * 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 @@
}
/**
- * 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 @@
/**
* 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 @@
#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 @@
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 @@
* 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 @@
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 @@
/*
* 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 @@
/*
* 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 @@
/*
* 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 @@
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 @@
/**
* 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 @@
/**
* 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 @@
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 @@
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 @@
}
#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 @@
}
/*
- * 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 @@
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 @@
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 @@
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 @@
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 @@
#endif
/*
+ * 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;
+}
+
+/*
- * Get the flash and manufacturer id and lookup if the type is supported
+ * 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 @@
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 @@
*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 @@
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 @@
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 @@
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 @@
/*
* 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 @@
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 @@
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 @@
}
#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 @@
/**
* 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 @@
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 @@
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 @@
/* 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 @@
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 @@
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:
@@ -3047,11 +3233,12 @@
if (!chip->ecc.size)
chip->ecc.size = 256;
chip->ecc.bytes = 3;
+ chip->ecc.strength = 1;
break;
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 +3253,8 @@
/*
* 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 +3265,14 @@
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 +3284,19 @@
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 +3307,16 @@
/*
* 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 +3349,29 @@
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;
+ 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 */
+ /* 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 +3382,13 @@
/**
* 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 +3402,8 @@
/**
* 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 @@
/**
* 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 @@
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 @@
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 @@
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 @@
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 @@
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 @@
/**
* 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
+ * @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.
- *
-*/
-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 @@
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 @@
/**
* 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 @@
} 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 @@
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 @@
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 @@
/**
* 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 @@
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 @@
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 @@
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 @@
/* 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 @@
/**
* 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 @@
/* 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 @@
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 @@
/* 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 @@
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 @@
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 @@
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 @@
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 @@
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 @@
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 @@
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 @@
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 @@
/**
* 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 @@
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);
+ 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;
- 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);
+ td->version[i] = 1;
+ if (md)
+ md->version[i] = 1;
+ }
- /* Write the bad block table to the device ? */
+ /* 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 @@
/**
* 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 @@
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 @@
/**
* 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 @@
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 @@
/**
* 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
+ * @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.
+ * 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.
- *
-*/
+ * 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 @@
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 @@
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 @@
/**
* 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 @@
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 @@
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 @@
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 @@
.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 @@
.offs = 8,
.len = 4,
.veroffs = 12,
- .maxblocks = 4,
+ .maxblocks = NAND_BBT_SCAN_MAXBLOCKS,
.pattern = bbt_pattern
};
@@ -1306,55 +1263,51 @@
.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 @@
/**
* nand_default_bbt - [NAND Interface] Select a default bad block table for the device
- * @mtd: MTD device structure
+ * @mtd: MTD device structure
*
- * This function selects the default bad block table
- * support for the device and calls the nand_scan_bbt function
- *
-*/
+ * 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 @@
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 @@
}
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 @@
* 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 @@
* 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 @@
{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 fe8bdeb..d81972c 100644
--- a/drivers/mtd/nand/nand_util.c
+++ b/drivers/mtd/nand/nand_util.c
@@ -121,7 +121,7 @@
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 @@
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 @@
/* 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);
@@ -605,7 +606,7 @@
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;
@@ -615,7 +616,7 @@
ops.datbuf = p_buffer;
ops.oobbuf = ops.datbuf + pagesize;
- rval = nand->write_oob(nand, offset, &ops);
+ rval = mtd_write_oob(nand, offset, &ops);
if (rval != 0)
break;
diff --git a/drivers/mtd/nand/ndfc.c b/drivers/mtd/nand/ndfc.c
index 213d2c9..94b9033 100644
--- a/drivers/mtd/nand/ndfc.c
+++ b/drivers/mtd/nand/ndfc.c
@@ -216,6 +216,7 @@
nand->ecc.mode = NAND_ECC_HW;
nand->ecc.size = 256;
nand->ecc.bytes = 3;
+ nand->ecc.strength = 1;
nand->select_chip = ndfc_select_chip;
#ifdef CONFIG_SYS_NAND_BUSWIDTH_16BIT
diff --git a/drivers/mtd/nand/nomadik.c b/drivers/mtd/nand/nomadik.c
index b76f4cb..dc8e513 100644
--- a/drivers/mtd/nand/nomadik.c
+++ b/drivers/mtd/nand/nomadik.c
@@ -212,6 +212,7 @@
chip->ecc.mode = NAND_ECC_HW;
chip->ecc.bytes = 3;
chip->ecc.size = 512;
+ chip->ecc.strength = 1;
chip->ecc.layout = &nomadik_ecc_layout;
chip->ecc.calculate = nomadik_ecc_calculate;
chip->ecc.hwctl = nomadik_ecc_hwctl;
diff --git a/drivers/mtd/nand/omap_gpmc.c b/drivers/mtd/nand/omap_gpmc.c
index bc1bcad..d5f3248 100644
--- a/drivers/mtd/nand/omap_gpmc.c
+++ b/drivers/mtd/nand/omap_gpmc.c
@@ -590,11 +590,12 @@
* @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
*
*/
static int omap_read_page_bch(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;
@@ -804,6 +805,7 @@
nand->ecc.hwctl = NULL;
nand->ecc.correct = NULL;
nand->ecc.calculate = NULL;
+ nand->ecc.strength = eccstrength;
/* Setup the ecc configurations again */
if (hardware) {
@@ -901,7 +903,7 @@
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/s3c2410_nand.c b/drivers/mtd/nand/s3c2410_nand.c
index e1a459b..43d8213 100644
--- a/drivers/mtd/nand/s3c2410_nand.c
+++ b/drivers/mtd/nand/s3c2410_nand.c
@@ -173,6 +173,7 @@
nand->ecc.mode = NAND_ECC_HW;
nand->ecc.size = CONFIG_SYS_NAND_ECCSIZE;
nand->ecc.bytes = CONFIG_SYS_NAND_ECCBYTES;
+ nand->ecc.strength = 1;
#else
nand->ecc.mode = NAND_ECC_SOFT;
#endif
diff --git a/drivers/mtd/nand/tegra_nand.c b/drivers/mtd/nand/tegra_nand.c
index 4d94cc6..6afbec6 100644
--- a/drivers/mtd/nand/tegra_nand.c
+++ b/drivers/mtd/nand/tegra_nand.c
@@ -707,7 +707,7 @@
* -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 @@
* @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 @@
(readl(&info->reg->addr_reg2) << 16);
nand_rw_page(mtd, chip, (uint8_t *)buf, page, 1, 1);
+ return 0;
}
@@ -746,7 +747,7 @@
* -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 @@
* @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 @@
(readl(&info->reg->addr_reg2) << 16);
nand_rw_page(mtd, chip, (uint8_t *)buf, page, 0, 1);
+ return 0;
}
/**
@@ -873,19 +875,13 @@
* @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;
}
/**
@@ -1018,6 +1014,7 @@
nand->ecc.write_page_raw = nand_write_page_raw;
nand->ecc.read_oob = nand_read_oob;
nand->ecc.write_oob = nand_write_oob;
+ nand->ecc.strength = 1;
nand->select_chip = nand_select_chip;
nand->dev_ready = nand_dev_ready;
nand->priv = &nand_ctrl;
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 @@
#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 858e322..ddfe7e7 100644
--- a/drivers/mtd/onenand/onenand_base.c
+++ b/drivers/mtd/onenand/onenand_base.c
@@ -743,7 +743,7 @@
}
/**
- * 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
@@ -807,7 +807,7 @@
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 */
@@ -847,7 +847,7 @@
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;
@@ -914,7 +914,7 @@
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);
@@ -929,7 +929,7 @@
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;
}
@@ -950,7 +950,7 @@
/* 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;
}
}
@@ -987,7 +987,7 @@
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;
@@ -998,7 +998,7 @@
/* 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;
@@ -1041,7 +1041,7 @@
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);
@@ -1115,10 +1115,10 @@
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;
@@ -1337,7 +1337,7 @@
#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
@@ -1404,19 +1404,13 @@
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;
@@ -1450,7 +1444,7 @@
/* 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);
@@ -1502,7 +1496,7 @@
}
/**
- * 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
@@ -1521,7 +1515,7 @@
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;
@@ -1530,7 +1524,7 @@
/* 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;
@@ -1571,7 +1565,7 @@
/* 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);
@@ -1661,10 +1655,10 @@
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;
@@ -1720,13 +1714,6 @@
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);
@@ -1762,8 +1749,6 @@
return -EINVAL;
}
- instr->fail_addr = 0xffffffff;
-
/* Grab the lock and see if the device is available */
onenand_get_device(mtd, FL_ERASING);
@@ -1889,7 +1874,7 @@
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,
@@ -1915,7 +1900,6 @@
*/
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);
@@ -1926,7 +1910,7 @@
return ret;
}
- ret = this->block_markbad(mtd, ofs);
+ ret = mtd_block_markbad(mtd, ofs);
return ret;
}
@@ -2386,7 +2370,7 @@
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,
@@ -2645,14 +2629,14 @@
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 @@
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 @@
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 a708162..2588822 100644
--- a/drivers/mtd/ubi/build.c
+++ b/drivers/mtd/ubi/build.c
@@ -539,7 +539,7 @@
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 @@
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 @@
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 @@
}
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 @@
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 @@
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 @@
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 @@
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 @@
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 @@
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 @@
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