* [PATCH v6 1/7] mtd: rawnand: Always store info about bad block markers in chip struct
2019-04-17 12:36 [PATCH v6 0/7] mtd: rawnand: Support bad block markers in first, second or last page Schrempf Frieder
@ 2019-04-17 12:36 ` Schrempf Frieder
2019-04-17 12:36 ` [PATCH v6 2/7] mtd: onenand: Store bad block marker position " Schrempf Frieder
` (6 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: Schrempf Frieder @ 2019-04-17 12:36 UTC (permalink / raw)
To: bbrezillon, miquel.raynal, richard, David Woodhouse,
Brian Norris, Marek Vasut
Cc: linux-mtd, linux-kernel, Schrempf Frieder
From: Frieder Schrempf <frieder.schrempf@kontron.de>
The information about where the manufacturer puts the bad block
markers inside the bad block and in the OOB data is stored in
different places. Let's move this information to nand_chip.options
and nand_chip.badblockpos.
As this chip-specific information is not directly related to the
bad block table (BBT), we also rename the flags to NAND_BBM_*.
Signed-off-by: Frieder Schrempf <frieder.schrempf@kontron.de>
Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com>
---
drivers/mtd/nand/raw/nand_amd.c | 2 +-
drivers/mtd/nand/raw/nand_base.c | 12 ++++++------
drivers/mtd/nand/raw/nand_bbt.c | 4 ++--
drivers/mtd/nand/raw/nand_esmt.c | 2 +-
drivers/mtd/nand/raw/nand_hynix.c | 4 ++--
drivers/mtd/nand/raw/nand_macronix.c | 2 +-
drivers/mtd/nand/raw/nand_micron.c | 2 +-
drivers/mtd/nand/raw/nand_samsung.c | 4 ++--
drivers/mtd/nand/raw/nand_toshiba.c | 2 +-
drivers/mtd/nand/raw/sh_flctl.c | 4 ++--
include/linux/mtd/rawnand.h | 16 +++++++++++++++-
11 files changed, 34 insertions(+), 20 deletions(-)
diff --git a/drivers/mtd/nand/raw/nand_amd.c b/drivers/mtd/nand/raw/nand_amd.c
index e008fd662ee6..9051e4e41eee 100644
--- a/drivers/mtd/nand/raw/nand_amd.c
+++ b/drivers/mtd/nand/raw/nand_amd.c
@@ -45,7 +45,7 @@ static void amd_nand_decode_id(struct nand_chip *chip)
static int amd_nand_init(struct nand_chip *chip)
{
if (nand_is_slc(chip))
- chip->bbt_options |= NAND_BBT_SCAN2NDPAGE;
+ chip->options |= NAND_BBM_SECONDPAGE;
return 0;
}
diff --git a/drivers/mtd/nand/raw/nand_base.c b/drivers/mtd/nand/raw/nand_base.c
index fd7ce5b929c0..e1111291389a 100644
--- a/drivers/mtd/nand/raw/nand_base.c
+++ b/drivers/mtd/nand/raw/nand_base.c
@@ -295,11 +295,11 @@ static int nand_block_bad(struct nand_chip *chip, loff_t ofs)
int page, page_end, res;
u8 bad;
- if (chip->bbt_options & NAND_BBT_SCANLASTPAGE)
+ if (chip->options & NAND_BBM_LASTPAGE)
ofs += mtd->erasesize - mtd->writesize;
page = (int)(ofs >> chip->page_shift) & chip->pagemask;
- page_end = page + (chip->bbt_options & NAND_BBT_SCAN2NDPAGE ? 2 : 1);
+ page_end = page + ((chip->options & NAND_BBM_SECONDPAGE) ? 2 : 1);
for (; page < page_end; page++) {
res = chip->ecc.read_oob(chip, page);
@@ -507,7 +507,7 @@ static int nand_default_block_markbad(struct nand_chip *chip, loff_t ofs)
ops.mode = MTD_OPS_PLACE_OOB;
/* Write to first/last page(s) if necessary */
- if (chip->bbt_options & NAND_BBT_SCANLASTPAGE)
+ if (chip->options & NAND_BBM_LASTPAGE)
ofs += mtd->erasesize - mtd->writesize;
do {
res = nand_do_write_oob(chip, ofs, &ops);
@@ -516,7 +516,7 @@ static int nand_default_block_markbad(struct nand_chip *chip, loff_t ofs)
i++;
ofs += mtd->writesize;
- } while ((chip->bbt_options & NAND_BBT_SCAN2NDPAGE) && i < 2);
+ } while ((chip->options & NAND_BBM_SECONDPAGE) && i < 2);
return ret;
}
@@ -4513,9 +4513,9 @@ static void nand_decode_bbm_options(struct nand_chip *chip)
/* Set the bad block position */
if (mtd->writesize > 512 || (chip->options & NAND_BUSWIDTH_16))
- chip->badblockpos = NAND_LARGE_BADBLOCK_POS;
+ chip->badblockpos = NAND_BBM_POS_LARGE;
else
- chip->badblockpos = NAND_SMALL_BADBLOCK_POS;
+ chip->badblockpos = NAND_BBM_POS_SMALL;
}
static inline bool is_full_id_nand(struct nand_flash_dev *type)
diff --git a/drivers/mtd/nand/raw/nand_bbt.c b/drivers/mtd/nand/raw/nand_bbt.c
index 9a7855839f81..4915dd7283bb 100644
--- a/drivers/mtd/nand/raw/nand_bbt.c
+++ b/drivers/mtd/nand/raw/nand_bbt.c
@@ -468,7 +468,7 @@ static int create_bbt(struct nand_chip *this, uint8_t *buf,
pr_info("Scanning device for bad blocks\n");
- if (bd->options & NAND_BBT_SCAN2NDPAGE)
+ if (this->options & NAND_BBM_SECONDPAGE)
numpages = 2;
else
numpages = 1;
@@ -489,7 +489,7 @@ static int create_bbt(struct nand_chip *this, uint8_t *buf,
from = (loff_t)startblock << this->bbt_erase_shift;
}
- if (this->bbt_options & NAND_BBT_SCANLASTPAGE)
+ if (this->options & NAND_BBM_LASTPAGE)
from += mtd->erasesize - (mtd->writesize * numpages);
for (i = startblock; i < numblocks; i++) {
diff --git a/drivers/mtd/nand/raw/nand_esmt.c b/drivers/mtd/nand/raw/nand_esmt.c
index 3de5e89482f5..4320d4c6a7cd 100644
--- a/drivers/mtd/nand/raw/nand_esmt.c
+++ b/drivers/mtd/nand/raw/nand_esmt.c
@@ -36,7 +36,7 @@ static void esmt_nand_decode_id(struct nand_chip *chip)
static int esmt_nand_init(struct nand_chip *chip)
{
if (nand_is_slc(chip))
- chip->bbt_options |= NAND_BBT_SCAN2NDPAGE;
+ chip->options |= NAND_BBM_SECONDPAGE;
return 0;
}
diff --git a/drivers/mtd/nand/raw/nand_hynix.c b/drivers/mtd/nand/raw/nand_hynix.c
index 821d221b83eb..33cb10df65b8 100644
--- a/drivers/mtd/nand/raw/nand_hynix.c
+++ b/drivers/mtd/nand/raw/nand_hynix.c
@@ -688,9 +688,9 @@ static int hynix_nand_init(struct nand_chip *chip)
int ret;
if (!nand_is_slc(chip))
- chip->bbt_options |= NAND_BBT_SCANLASTPAGE;
+ chip->options |= NAND_BBM_LASTPAGE;
else
- chip->bbt_options |= NAND_BBT_SCAN2NDPAGE;
+ chip->options |= NAND_BBM_SECONDPAGE;
hynix = kzalloc(sizeof(*hynix), GFP_KERNEL);
if (!hynix)
diff --git a/drivers/mtd/nand/raw/nand_macronix.c b/drivers/mtd/nand/raw/nand_macronix.c
index 47d8cda547cf..6db7ced4b96b 100644
--- a/drivers/mtd/nand/raw/nand_macronix.c
+++ b/drivers/mtd/nand/raw/nand_macronix.c
@@ -62,7 +62,7 @@ static void macronix_nand_fix_broken_get_timings(struct nand_chip *chip)
static int macronix_nand_init(struct nand_chip *chip)
{
if (nand_is_slc(chip))
- chip->bbt_options |= NAND_BBT_SCAN2NDPAGE;
+ chip->options |= NAND_BBM_SECONDPAGE;
macronix_nand_fix_broken_get_timings(chip);
diff --git a/drivers/mtd/nand/raw/nand_micron.c b/drivers/mtd/nand/raw/nand_micron.c
index 7a2cef02eacd..d43e15772f73 100644
--- a/drivers/mtd/nand/raw/nand_micron.c
+++ b/drivers/mtd/nand/raw/nand_micron.c
@@ -448,7 +448,7 @@ static int micron_nand_init(struct nand_chip *chip)
goto err_free_manuf_data;
if (mtd->writesize == 2048)
- chip->bbt_options |= NAND_BBT_SCAN2NDPAGE;
+ chip->options |= NAND_BBM_SECONDPAGE;
ondie = micron_supports_on_die_ecc(chip);
diff --git a/drivers/mtd/nand/raw/nand_samsung.c b/drivers/mtd/nand/raw/nand_samsung.c
index f7d7041b6213..f4db72329b7b 100644
--- a/drivers/mtd/nand/raw/nand_samsung.c
+++ b/drivers/mtd/nand/raw/nand_samsung.c
@@ -131,9 +131,9 @@ static int samsung_nand_init(struct nand_chip *chip)
chip->options |= NAND_SAMSUNG_LP_OPTIONS;
if (!nand_is_slc(chip))
- chip->bbt_options |= NAND_BBT_SCANLASTPAGE;
+ chip->options |= NAND_BBM_LASTPAGE;
else
- chip->bbt_options |= NAND_BBT_SCAN2NDPAGE;
+ chip->options |= NAND_BBM_SECONDPAGE;
return 0;
}
diff --git a/drivers/mtd/nand/raw/nand_toshiba.c b/drivers/mtd/nand/raw/nand_toshiba.c
index 13f9632f1cb4..67f01cef5651 100644
--- a/drivers/mtd/nand/raw/nand_toshiba.c
+++ b/drivers/mtd/nand/raw/nand_toshiba.c
@@ -152,7 +152,7 @@ static void toshiba_nand_decode_id(struct nand_chip *chip)
static int toshiba_nand_init(struct nand_chip *chip)
{
if (nand_is_slc(chip))
- chip->bbt_options |= NAND_BBT_SCAN2NDPAGE;
+ chip->options |= NAND_BBM_SECONDPAGE;
/* Check that chip is BENAND and ECC mode is on-die */
if (nand_is_slc(chip) && chip->ecc.mode == NAND_ECC_ON_DIE &&
diff --git a/drivers/mtd/nand/raw/sh_flctl.c b/drivers/mtd/nand/raw/sh_flctl.c
index 3f610040f0c3..02a6768ab13f 100644
--- a/drivers/mtd/nand/raw/sh_flctl.c
+++ b/drivers/mtd/nand/raw/sh_flctl.c
@@ -101,14 +101,12 @@ static const struct mtd_ooblayout_ops flctl_4secc_oob_largepage_ops = {
static uint8_t scan_ff_pattern[] = { 0xff, 0xff };
static struct nand_bbt_descr flctl_4secc_smallpage = {
- .options = NAND_BBT_SCAN2NDPAGE,
.offs = 11,
.len = 1,
.pattern = scan_ff_pattern,
};
static struct nand_bbt_descr flctl_4secc_largepage = {
- .options = NAND_BBT_SCAN2NDPAGE,
.offs = 0,
.len = 2,
.pattern = scan_ff_pattern,
@@ -1179,6 +1177,8 @@ static int flctl_probe(struct platform_device *pdev)
if (pdata->flcmncr_val & SEL_16BIT)
nand->options |= NAND_BUSWIDTH_16;
+ nand->options |= NAND_BBM_SECONDPAGE;
+
pm_runtime_enable(&pdev->dev);
pm_runtime_resume(&pdev->dev);
diff --git a/include/linux/mtd/rawnand.h b/include/linux/mtd/rawnand.h
index c0589f82c1f8..ef9e54a7ddeb 100644
--- a/include/linux/mtd/rawnand.h
+++ b/include/linux/mtd/rawnand.h
@@ -169,6 +169,20 @@ enum nand_ecc_algo {
/* Macros to identify the above */
#define NAND_HAS_SUBPAGE_READ(chip) ((chip->options & NAND_SUBPAGE_READ))
+/*
+ * There are different places where the manufacturer stores the factory bad
+ * block markers.
+ *
+ * Position within the block: Each of these pages needs to be checked for a
+ * bad block marking pattern.
+ */
+#define NAND_BBM_SECONDPAGE 0x02000000
+#define NAND_BBM_LASTPAGE 0x04000000
+
+/* Position within the OOB data of the page */
+#define NAND_BBM_POS_SMALL 5
+#define NAND_BBM_POS_LARGE 0
+
/* Non chip related options */
/* This option skips the bbt scan during initialization. */
#define NAND_SKIP_BBTSCAN 0x00010000
@@ -1055,7 +1069,7 @@ struct nand_chip {
int subpagesize;
int onfi_timing_mode_default;
- int badblockpos;
+ unsigned int badblockpos;
int badblockbits;
struct nand_id id;
--
2.17.1
______________________________________________________
Linux MTD discussion mailing list
http://lists.infradead.org/mailman/listinfo/linux-mtd/
^ permalink raw reply related [flat|nested] 9+ messages in thread* [PATCH v6 2/7] mtd: onenand: Store bad block marker position in chip struct
2019-04-17 12:36 [PATCH v6 0/7] mtd: rawnand: Support bad block markers in first, second or last page Schrempf Frieder
2019-04-17 12:36 ` [PATCH v6 1/7] mtd: rawnand: Always store info about bad block markers in chip struct Schrempf Frieder
@ 2019-04-17 12:36 ` Schrempf Frieder
2019-04-17 12:36 ` [PATCH v6 3/7] mtd: nand: Cleanup flags and fields for bad block marker position Schrempf Frieder
` (5 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: Schrempf Frieder @ 2019-04-17 12:36 UTC (permalink / raw)
To: bbrezillon, miquel.raynal, richard, Kyungmin Park,
David Woodhouse, Brian Norris, Marek Vasut
Cc: linux-mtd, linux-kernel, Schrempf Frieder
From: Frieder Schrempf <frieder.schrempf@kontron.de>
The information about where the manufacturer puts the bad block
markers inside the bad block and in the OOB data is stored in
different places. Let's move this information to the chip struct,
as we did it for rawnand.
Signed-off-by: Frieder Schrempf <frieder.schrempf@kontron.de>
Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com>
---
drivers/mtd/nand/onenand/onenand_base.c | 5 ++++-
drivers/mtd/nand/onenand/onenand_bbt.c | 3 ---
include/linux/mtd/onenand.h | 3 +++
3 files changed, 7 insertions(+), 4 deletions(-)
diff --git a/drivers/mtd/nand/onenand/onenand_base.c b/drivers/mtd/nand/onenand/onenand_base.c
index 4ca4b194e7d7..f41d76248550 100644
--- a/drivers/mtd/nand/onenand/onenand_base.c
+++ b/drivers/mtd/nand/onenand/onenand_base.c
@@ -2458,7 +2458,7 @@ static int onenand_default_block_markbad(struct mtd_info *mtd, loff_t ofs)
bbm->bbt[block >> 2] |= 0x01 << ((block & 0x03) << 1);
/* We write two bytes, so we don't have to mess with 16-bit access */
- ofs += mtd->oobsize + (bbm->badblockpos & ~0x01);
+ ofs += mtd->oobsize + (this->badblockpos & ~0x01);
/* FIXME : What to do when marking SLC block in partition
* with MLC erasesize? For now, it is not advisable to
* create partitions containing both SLC and MLC regions.
@@ -3967,6 +3967,9 @@ int onenand_scan(struct mtd_info *mtd, int maxchips)
if (!(this->options & ONENAND_SKIP_INITIAL_UNLOCKING))
this->unlock_all(mtd);
+ /* Set the bad block marker position */
+ this->badblockpos = ONENAND_BADBLOCK_POS;
+
ret = this->scan_bbt(mtd);
if ((!FLEXONENAND(this)) || ret)
return ret;
diff --git a/drivers/mtd/nand/onenand/onenand_bbt.c b/drivers/mtd/nand/onenand/onenand_bbt.c
index dde20487937d..57c31c81be18 100644
--- a/drivers/mtd/nand/onenand/onenand_bbt.c
+++ b/drivers/mtd/nand/onenand/onenand_bbt.c
@@ -190,9 +190,6 @@ static int onenand_scan_bbt(struct mtd_info *mtd, struct nand_bbt_descr *bd)
if (!bbm->bbt)
return -ENOMEM;
- /* Set the bad block position */
- bbm->badblockpos = ONENAND_BADBLOCK_POS;
-
/* Set erase shift */
bbm->bbt_erase_shift = this->erase_shift;
diff --git a/include/linux/mtd/onenand.h b/include/linux/mtd/onenand.h
index 0aaa98b219a4..bfe9e10fae04 100644
--- a/include/linux/mtd/onenand.h
+++ b/include/linux/mtd/onenand.h
@@ -94,6 +94,7 @@ struct onenand_chip {
unsigned int technology;
unsigned int density_mask;
unsigned int options;
+ unsigned int badblockpos;
unsigned int erase_shift;
unsigned int page_shift;
@@ -188,6 +189,8 @@ struct onenand_chip {
/* Check byte access in OneNAND */
#define ONENAND_CHECK_BYTE_ACCESS(addr) (addr & 0x1)
+#define ONENAND_BADBLOCK_POS 0
+
/*
* Options bits
*/
--
2.17.1
______________________________________________________
Linux MTD discussion mailing list
http://lists.infradead.org/mailman/listinfo/linux-mtd/
^ permalink raw reply related [flat|nested] 9+ messages in thread* [PATCH v6 3/7] mtd: nand: Cleanup flags and fields for bad block marker position
2019-04-17 12:36 [PATCH v6 0/7] mtd: rawnand: Support bad block markers in first, second or last page Schrempf Frieder
2019-04-17 12:36 ` [PATCH v6 1/7] mtd: rawnand: Always store info about bad block markers in chip struct Schrempf Frieder
2019-04-17 12:36 ` [PATCH v6 2/7] mtd: onenand: Store bad block marker position " Schrempf Frieder
@ 2019-04-17 12:36 ` Schrempf Frieder
2019-04-17 12:36 ` [PATCH v6 4/7] mtd: nand: Make flags for bad block marker position more granular Schrempf Frieder
` (4 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: Schrempf Frieder @ 2019-04-17 12:36 UTC (permalink / raw)
To: bbrezillon, miquel.raynal, richard, David Woodhouse,
Brian Norris, Marek Vasut
Cc: linux-mtd, linux-kernel, Schrempf Frieder
From: Frieder Schrempf <frieder.schrempf@kontron.de>
Now that we have moved the information to the chip level, let's
remove all the unused flags and fields.
Signed-off-by: Frieder Schrempf <frieder.schrempf@kontron.de>
Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com>
---
include/linux/mtd/bbm.h | 14 +-------------
1 file changed, 1 insertion(+), 13 deletions(-)
diff --git a/include/linux/mtd/bbm.h b/include/linux/mtd/bbm.h
index 3102bd754d18..010bc5544c54 100644
--- a/include/linux/mtd/bbm.h
+++ b/include/linux/mtd/bbm.h
@@ -93,10 +93,7 @@ struct nand_bbt_descr {
#define NAND_BBT_WRITE 0x00002000
/* Read and write back block contents when writing bbt */
#define NAND_BBT_SAVECONTENT 0x00004000
-/* Search good / bad pattern on the first and the second page */
-#define NAND_BBT_SCAN2NDPAGE 0x00008000
-/* Search good / bad pattern on the last page of the eraseblock */
-#define NAND_BBT_SCANLASTPAGE 0x00010000
+
/*
* Use a flash based bad block table. By default, OOB identifier is saved in
* OOB area. This option is passed to the default bad block table function.
@@ -123,13 +120,6 @@ struct nand_bbt_descr {
/* The maximum number of blocks to scan for a bbt */
#define NAND_BBT_SCAN_MAXBLOCKS 4
-/*
- * Constants for oob configuration
- */
-#define NAND_SMALL_BADBLOCK_POS 5
-#define NAND_LARGE_BADBLOCK_POS 0
-#define ONENAND_BADBLOCK_POS 0
-
/*
* Bad block scanning errors
*/
@@ -140,7 +130,6 @@ struct nand_bbt_descr {
/**
* struct bbm_info - [GENERIC] Bad Block Table data structure
* @bbt_erase_shift: [INTERN] number of address bits in a bbt entry
- * @badblockpos: [INTERN] position of the bad block marker in the oob area
* @options: options for this descriptor
* @bbt: [INTERN] bad block table pointer
* @isbad_bbt: function to determine if a block is bad
@@ -150,7 +139,6 @@ struct nand_bbt_descr {
*/
struct bbm_info {
int bbt_erase_shift;
- int badblockpos;
int options;
uint8_t *bbt;
--
2.17.1
______________________________________________________
Linux MTD discussion mailing list
http://lists.infradead.org/mailman/listinfo/linux-mtd/
^ permalink raw reply related [flat|nested] 9+ messages in thread* [PATCH v6 4/7] mtd: nand: Make flags for bad block marker position more granular
2019-04-17 12:36 [PATCH v6 0/7] mtd: rawnand: Support bad block markers in first, second or last page Schrempf Frieder
` (2 preceding siblings ...)
2019-04-17 12:36 ` [PATCH v6 3/7] mtd: nand: Cleanup flags and fields for bad block marker position Schrempf Frieder
@ 2019-04-17 12:36 ` Schrempf Frieder
2019-04-17 12:36 ` [PATCH v6 6/7] mtd: rawnand: ESMT: Also use the last page for bad block markers Schrempf Frieder
` (3 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: Schrempf Frieder @ 2019-04-17 12:36 UTC (permalink / raw)
To: bbrezillon, miquel.raynal, richard, David Woodhouse,
Brian Norris, Marek Vasut
Cc: linux-mtd, linux-kernel, Schrempf Frieder
From: Frieder Schrempf <frieder.schrempf@kontron.de>
To be able to check and set bad block markers in the first and
second page of a block independently of each other, we create
separate flags for both cases.
Previously NAND_BBM_SECONDPAGE meant, that both, the first and the
second page were used. With this patch NAND_BBM_FIRSTPAGE stands for
using the first page and NAND_BBM_SECONDPAGE for using the second
page.
This patch is only for preparation of subsequent changes and does
not implement the logic to actually handle both flags separately.
Signed-off-by: Frieder Schrempf <frieder.schrempf@kontron.de>
Reviewed-by: Boris Brezillon <bbrezillon@kernel.org>
Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com>
---
drivers/mtd/nand/raw/nand_amd.c | 2 +-
drivers/mtd/nand/raw/nand_base.c | 6 ++++--
drivers/mtd/nand/raw/nand_bbt.c | 3 ++-
drivers/mtd/nand/raw/nand_esmt.c | 2 +-
drivers/mtd/nand/raw/nand_hynix.c | 2 +-
drivers/mtd/nand/raw/nand_macronix.c | 2 +-
drivers/mtd/nand/raw/nand_micron.c | 2 +-
drivers/mtd/nand/raw/nand_samsung.c | 2 +-
drivers/mtd/nand/raw/nand_toshiba.c | 2 +-
drivers/mtd/nand/raw/sh_flctl.c | 2 +-
include/linux/mtd/rawnand.h | 1 +
11 files changed, 15 insertions(+), 11 deletions(-)
diff --git a/drivers/mtd/nand/raw/nand_amd.c b/drivers/mtd/nand/raw/nand_amd.c
index 9051e4e41eee..1417559d3057 100644
--- a/drivers/mtd/nand/raw/nand_amd.c
+++ b/drivers/mtd/nand/raw/nand_amd.c
@@ -45,7 +45,7 @@ static void amd_nand_decode_id(struct nand_chip *chip)
static int amd_nand_init(struct nand_chip *chip)
{
if (nand_is_slc(chip))
- chip->options |= NAND_BBM_SECONDPAGE;
+ chip->options |= NAND_BBM_FIRSTPAGE | NAND_BBM_SECONDPAGE;
return 0;
}
diff --git a/drivers/mtd/nand/raw/nand_base.c b/drivers/mtd/nand/raw/nand_base.c
index e1111291389a..6e2d728d2fd9 100644
--- a/drivers/mtd/nand/raw/nand_base.c
+++ b/drivers/mtd/nand/raw/nand_base.c
@@ -299,7 +299,8 @@ static int nand_block_bad(struct nand_chip *chip, loff_t ofs)
ofs += mtd->erasesize - mtd->writesize;
page = (int)(ofs >> chip->page_shift) & chip->pagemask;
- page_end = page + ((chip->options & NAND_BBM_SECONDPAGE) ? 2 : 1);
+ page_end = page + (((chip->options & NAND_BBM_FIRSTPAGE) &&
+ (chip->options & NAND_BBM_SECONDPAGE)) ? 2 : 1);
for (; page < page_end; page++) {
res = chip->ecc.read_oob(chip, page);
@@ -516,7 +517,8 @@ static int nand_default_block_markbad(struct nand_chip *chip, loff_t ofs)
i++;
ofs += mtd->writesize;
- } while ((chip->options & NAND_BBM_SECONDPAGE) && i < 2);
+ } while ((chip->options & NAND_BBM_FIRSTPAGE) &&
+ (chip->options & NAND_BBM_SECONDPAGE) && i < 2);
return ret;
}
diff --git a/drivers/mtd/nand/raw/nand_bbt.c b/drivers/mtd/nand/raw/nand_bbt.c
index 4915dd7283bb..4cb664847ef5 100644
--- a/drivers/mtd/nand/raw/nand_bbt.c
+++ b/drivers/mtd/nand/raw/nand_bbt.c
@@ -468,7 +468,8 @@ static int create_bbt(struct nand_chip *this, uint8_t *buf,
pr_info("Scanning device for bad blocks\n");
- if (this->options & NAND_BBM_SECONDPAGE)
+ if ((this->options & NAND_BBM_FIRSTPAGE) &&
+ (this->options & NAND_BBM_SECONDPAGE))
numpages = 2;
else
numpages = 1;
diff --git a/drivers/mtd/nand/raw/nand_esmt.c b/drivers/mtd/nand/raw/nand_esmt.c
index 4320d4c6a7cd..58646ed663ac 100644
--- a/drivers/mtd/nand/raw/nand_esmt.c
+++ b/drivers/mtd/nand/raw/nand_esmt.c
@@ -36,7 +36,7 @@ static void esmt_nand_decode_id(struct nand_chip *chip)
static int esmt_nand_init(struct nand_chip *chip)
{
if (nand_is_slc(chip))
- chip->options |= NAND_BBM_SECONDPAGE;
+ chip->options |= NAND_BBM_FIRSTPAGE | NAND_BBM_SECONDPAGE;
return 0;
}
diff --git a/drivers/mtd/nand/raw/nand_hynix.c b/drivers/mtd/nand/raw/nand_hynix.c
index 33cb10df65b8..7c600c4d5ec8 100644
--- a/drivers/mtd/nand/raw/nand_hynix.c
+++ b/drivers/mtd/nand/raw/nand_hynix.c
@@ -690,7 +690,7 @@ static int hynix_nand_init(struct nand_chip *chip)
if (!nand_is_slc(chip))
chip->options |= NAND_BBM_LASTPAGE;
else
- chip->options |= NAND_BBM_SECONDPAGE;
+ chip->options |= NAND_BBM_FIRSTPAGE | NAND_BBM_SECONDPAGE;
hynix = kzalloc(sizeof(*hynix), GFP_KERNEL);
if (!hynix)
diff --git a/drivers/mtd/nand/raw/nand_macronix.c b/drivers/mtd/nand/raw/nand_macronix.c
index 6db7ced4b96b..e287e71347c5 100644
--- a/drivers/mtd/nand/raw/nand_macronix.c
+++ b/drivers/mtd/nand/raw/nand_macronix.c
@@ -62,7 +62,7 @@ static void macronix_nand_fix_broken_get_timings(struct nand_chip *chip)
static int macronix_nand_init(struct nand_chip *chip)
{
if (nand_is_slc(chip))
- chip->options |= NAND_BBM_SECONDPAGE;
+ chip->options |= NAND_BBM_FIRSTPAGE | NAND_BBM_SECONDPAGE;
macronix_nand_fix_broken_get_timings(chip);
diff --git a/drivers/mtd/nand/raw/nand_micron.c b/drivers/mtd/nand/raw/nand_micron.c
index d43e15772f73..cbd4f09ac178 100644
--- a/drivers/mtd/nand/raw/nand_micron.c
+++ b/drivers/mtd/nand/raw/nand_micron.c
@@ -448,7 +448,7 @@ static int micron_nand_init(struct nand_chip *chip)
goto err_free_manuf_data;
if (mtd->writesize == 2048)
- chip->options |= NAND_BBM_SECONDPAGE;
+ chip->options |= NAND_BBM_FIRSTPAGE | NAND_BBM_SECONDPAGE;
ondie = micron_supports_on_die_ecc(chip);
diff --git a/drivers/mtd/nand/raw/nand_samsung.c b/drivers/mtd/nand/raw/nand_samsung.c
index f4db72329b7b..5552ce20ede0 100644
--- a/drivers/mtd/nand/raw/nand_samsung.c
+++ b/drivers/mtd/nand/raw/nand_samsung.c
@@ -133,7 +133,7 @@ static int samsung_nand_init(struct nand_chip *chip)
if (!nand_is_slc(chip))
chip->options |= NAND_BBM_LASTPAGE;
else
- chip->options |= NAND_BBM_SECONDPAGE;
+ chip->options |= NAND_BBM_FIRSTPAGE | NAND_BBM_SECONDPAGE;
return 0;
}
diff --git a/drivers/mtd/nand/raw/nand_toshiba.c b/drivers/mtd/nand/raw/nand_toshiba.c
index 67f01cef5651..74ffcae48726 100644
--- a/drivers/mtd/nand/raw/nand_toshiba.c
+++ b/drivers/mtd/nand/raw/nand_toshiba.c
@@ -152,7 +152,7 @@ static void toshiba_nand_decode_id(struct nand_chip *chip)
static int toshiba_nand_init(struct nand_chip *chip)
{
if (nand_is_slc(chip))
- chip->options |= NAND_BBM_SECONDPAGE;
+ chip->options |= NAND_BBM_FIRSTPAGE | NAND_BBM_SECONDPAGE;
/* Check that chip is BENAND and ECC mode is on-die */
if (nand_is_slc(chip) && chip->ecc.mode == NAND_ECC_ON_DIE &&
diff --git a/drivers/mtd/nand/raw/sh_flctl.c b/drivers/mtd/nand/raw/sh_flctl.c
index 02a6768ab13f..e509c93737c4 100644
--- a/drivers/mtd/nand/raw/sh_flctl.c
+++ b/drivers/mtd/nand/raw/sh_flctl.c
@@ -1177,7 +1177,7 @@ static int flctl_probe(struct platform_device *pdev)
if (pdata->flcmncr_val & SEL_16BIT)
nand->options |= NAND_BUSWIDTH_16;
- nand->options |= NAND_BBM_SECONDPAGE;
+ nand->options |= NAND_BBM_FIRSTPAGE | NAND_BBM_SECONDPAGE;
pm_runtime_enable(&pdev->dev);
pm_runtime_resume(&pdev->dev);
diff --git a/include/linux/mtd/rawnand.h b/include/linux/mtd/rawnand.h
index ef9e54a7ddeb..1383f46a5e5c 100644
--- a/include/linux/mtd/rawnand.h
+++ b/include/linux/mtd/rawnand.h
@@ -176,6 +176,7 @@ enum nand_ecc_algo {
* Position within the block: Each of these pages needs to be checked for a
* bad block marking pattern.
*/
+#define NAND_BBM_FIRSTPAGE 0x01000000
#define NAND_BBM_SECONDPAGE 0x02000000
#define NAND_BBM_LASTPAGE 0x04000000
--
2.17.1
______________________________________________________
Linux MTD discussion mailing list
http://lists.infradead.org/mailman/listinfo/linux-mtd/
^ permalink raw reply related [flat|nested] 9+ messages in thread* [PATCH v6 6/7] mtd: rawnand: ESMT: Also use the last page for bad block markers
2019-04-17 12:36 [PATCH v6 0/7] mtd: rawnand: Support bad block markers in first, second or last page Schrempf Frieder
` (3 preceding siblings ...)
2019-04-17 12:36 ` [PATCH v6 4/7] mtd: nand: Make flags for bad block marker position more granular Schrempf Frieder
@ 2019-04-17 12:36 ` Schrempf Frieder
2019-04-17 12:36 ` [PATCH v6 5/7] mtd: rawnand: Support bad block markers in first, second or last page Schrempf Frieder
` (2 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: Schrempf Frieder @ 2019-04-17 12:36 UTC (permalink / raw)
To: bbrezillon, miquel.raynal, richard, linux-kernel
Cc: David Woodhouse, Brian Norris, linux-mtd, Schrempf Frieder, Marek Vasut
From: Frieder Schrempf <frieder.schrempf@kontron.de>
It is known that some ESMT SLC NANDs have been shipped
with the factory bad block markers in the first or last page
of the block, instead of the first or second page. To be on
the safe side, let's check all three locations.
Signed-off-by: Frieder Schrempf <frieder.schrempf@kontron.de>
Reviewed-by: Boris Brezillon <bbrezillon@kernel.org>
Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com>
---
drivers/mtd/nand/raw/nand_esmt.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/drivers/mtd/nand/raw/nand_esmt.c b/drivers/mtd/nand/raw/nand_esmt.c
index 58646ed663ac..3338c68aaaf1 100644
--- a/drivers/mtd/nand/raw/nand_esmt.c
+++ b/drivers/mtd/nand/raw/nand_esmt.c
@@ -36,7 +36,14 @@ static void esmt_nand_decode_id(struct nand_chip *chip)
static int esmt_nand_init(struct nand_chip *chip)
{
if (nand_is_slc(chip))
- chip->options |= NAND_BBM_FIRSTPAGE | NAND_BBM_SECONDPAGE;
+ /*
+ * It is known that some ESMT SLC NANDs have been shipped
+ * with the factory bad block markers in the first or last page
+ * of the block, instead of the first or second page. To be on
+ * the safe side, let's check all three locations.
+ */
+ chip->options |= NAND_BBM_FIRSTPAGE | NAND_BBM_SECONDPAGE |
+ NAND_BBM_LASTPAGE;
return 0;
}
--
2.17.1
______________________________________________________
Linux MTD discussion mailing list
http://lists.infradead.org/mailman/listinfo/linux-mtd/
^ permalink raw reply related [flat|nested] 9+ messages in thread* [PATCH v6 5/7] mtd: rawnand: Support bad block markers in first, second or last page
2019-04-17 12:36 [PATCH v6 0/7] mtd: rawnand: Support bad block markers in first, second or last page Schrempf Frieder
` (4 preceding siblings ...)
2019-04-17 12:36 ` [PATCH v6 6/7] mtd: rawnand: ESMT: Also use the last page for bad block markers Schrempf Frieder
@ 2019-04-17 12:36 ` Schrempf Frieder
2019-04-17 12:36 ` [PATCH v6 7/7] mtd: rawnand: AMD: Also use the last page for bad block markers Schrempf Frieder
2019-04-18 16:25 ` [PATCH v6 0/7] mtd: rawnand: Support bad block markers in first, second or last page Miquel Raynal
7 siblings, 0 replies; 9+ messages in thread
From: Schrempf Frieder @ 2019-04-17 12:36 UTC (permalink / raw)
To: bbrezillon, miquel.raynal, richard, linux-kernel
Cc: David Woodhouse, Brian Norris, linux-mtd, Schrempf Frieder, Marek Vasut
From: Frieder Schrempf <frieder.schrempf@kontron.de>
Currently supported bad block marker positions within the block are:
* in first page only
* in last page only
* in first or second page
Some ESMT NANDs are known to have been shipped by the manufacturer
with bad block markers in the first or last page, instead of the
first or second page.
Also the datasheets for Cypress/Spansion/AMD NANDs claim that the
first, second *and* last page needs to be checked.
Therefore we make it possible to set NAND_BBM_FIRSTPAGE,
NAND_BBM_SECONDPAGE and NAND_BBM_LASTPAGE independently in any
combination.
To simplify the code, the logic to evaluate the flags is moved to a
a new function nand_bbm_get_next_page().
Signed-off-by: Frieder Schrempf <frieder.schrempf@kontron.de>
Reviewed-by: Boris Brezillon <bbrezillon@kernel.org>
---
drivers/mtd/nand/raw/internals.h | 1 +
drivers/mtd/nand/raw/nand_base.c | 63 ++++++++++++++++++++++----------
drivers/mtd/nand/raw/nand_bbt.c | 29 ++++++---------
3 files changed, 56 insertions(+), 37 deletions(-)
diff --git a/drivers/mtd/nand/raw/internals.h b/drivers/mtd/nand/raw/internals.h
index a204f9d7e123..cba6fe7dd8c4 100644
--- a/drivers/mtd/nand/raw/internals.h
+++ b/drivers/mtd/nand/raw/internals.h
@@ -76,6 +76,7 @@ extern const struct nand_manufacturer_ops toshiba_nand_manuf_ops;
/* Core functions */
const struct nand_manufacturer *nand_get_manufacturer(u8 id);
+int nand_bbm_get_next_page(struct nand_chip *chip, int page);
int nand_markbad_bbm(struct nand_chip *chip, loff_t ofs);
int nand_erase_nand(struct nand_chip *chip, struct erase_info *instr,
int allowbbt);
diff --git a/drivers/mtd/nand/raw/nand_base.c b/drivers/mtd/nand/raw/nand_base.c
index 6e2d728d2fd9..2cf71060d6f8 100644
--- a/drivers/mtd/nand/raw/nand_base.c
+++ b/drivers/mtd/nand/raw/nand_base.c
@@ -282,6 +282,31 @@ static void nand_release_device(struct nand_chip *chip)
mutex_unlock(&chip->lock);
}
+/**
+ * nand_bbm_get_next_page - Get the next page for bad block markers
+ * @chip: NAND chip object
+ * @page: First page to start checking for bad block marker usage
+ *
+ * Returns an integer that corresponds to the page offset within a block, for
+ * a page that is used to store bad block markers. If no more pages are
+ * available, -EINVAL is returned.
+ */
+int nand_bbm_get_next_page(struct nand_chip *chip, int page)
+{
+ struct mtd_info *mtd = nand_to_mtd(chip);
+ int last_page = ((mtd->erasesize - mtd->writesize) >>
+ chip->page_shift) & chip->pagemask;
+
+ if (page == 0 && chip->options & NAND_BBM_FIRSTPAGE)
+ return 0;
+ else if (page <= 1 && chip->options & NAND_BBM_SECONDPAGE)
+ return 1;
+ else if (page <= last_page && chip->options & NAND_BBM_LASTPAGE)
+ return last_page;
+
+ return -EINVAL;
+}
+
/**
* nand_block_bad - [DEFAULT] Read bad block marker from the chip
* @chip: NAND chip object
@@ -291,19 +316,15 @@ static void nand_release_device(struct nand_chip *chip)
*/
static int nand_block_bad(struct nand_chip *chip, loff_t ofs)
{
- struct mtd_info *mtd = nand_to_mtd(chip);
- int page, page_end, res;
+ int first_page, page_offset;
+ int res;
u8 bad;
- if (chip->options & NAND_BBM_LASTPAGE)
- ofs += mtd->erasesize - mtd->writesize;
+ first_page = (int)(ofs >> chip->page_shift) & chip->pagemask;
+ page_offset = nand_bbm_get_next_page(chip, 0);
- page = (int)(ofs >> chip->page_shift) & chip->pagemask;
- page_end = page + (((chip->options & NAND_BBM_FIRSTPAGE) &&
- (chip->options & NAND_BBM_SECONDPAGE)) ? 2 : 1);
-
- for (; page < page_end; page++) {
- res = chip->ecc.read_oob(chip, page);
+ while (page_offset >= 0) {
+ res = chip->ecc.read_oob(chip, first_page + page_offset);
if (res < 0)
return res;
@@ -315,6 +336,8 @@ static int nand_block_bad(struct nand_chip *chip, loff_t ofs)
res = hweight8(bad) < chip->badblockbits;
if (res)
return res;
+
+ page_offset = nand_bbm_get_next_page(chip, page_offset + 1);
}
return 0;
@@ -494,7 +517,7 @@ static int nand_default_block_markbad(struct nand_chip *chip, loff_t ofs)
struct mtd_info *mtd = nand_to_mtd(chip);
struct mtd_oob_ops ops;
uint8_t buf[2] = { 0, 0 };
- int ret = 0, res, i = 0;
+ int ret = 0, res, page_offset;
memset(&ops, 0, sizeof(ops));
ops.oobbuf = buf;
@@ -507,18 +530,18 @@ static int nand_default_block_markbad(struct nand_chip *chip, loff_t ofs)
}
ops.mode = MTD_OPS_PLACE_OOB;
- /* Write to first/last page(s) if necessary */
- if (chip->options & NAND_BBM_LASTPAGE)
- ofs += mtd->erasesize - mtd->writesize;
- do {
- res = nand_do_write_oob(chip, ofs, &ops);
+ page_offset = nand_bbm_get_next_page(chip, 0);
+
+ while (page_offset >= 0) {
+ res = nand_do_write_oob(chip,
+ ofs + (page_offset * mtd->writesize),
+ &ops);
+
if (!ret)
ret = res;
- i++;
- ofs += mtd->writesize;
- } while ((chip->options & NAND_BBM_FIRSTPAGE) &&
- (chip->options & NAND_BBM_SECONDPAGE) && i < 2);
+ page_offset = nand_bbm_get_next_page(chip, page_offset + 1);
+ }
return ret;
}
diff --git a/drivers/mtd/nand/raw/nand_bbt.c b/drivers/mtd/nand/raw/nand_bbt.c
index 4cb664847ef5..fd3c10216eda 100644
--- a/drivers/mtd/nand/raw/nand_bbt.c
+++ b/drivers/mtd/nand/raw/nand_bbt.c
@@ -416,11 +416,12 @@ static void read_abs_bbts(struct nand_chip *this, uint8_t *buf,
/* Scan a given block partially */
static int scan_block_fast(struct nand_chip *this, struct nand_bbt_descr *bd,
- loff_t offs, uint8_t *buf, int numpages)
+ loff_t offs, uint8_t *buf)
{
struct mtd_info *mtd = nand_to_mtd(this);
+
struct mtd_oob_ops ops;
- int j, ret;
+ int ret, page_offset;
ops.ooblen = mtd->oobsize;
ops.oobbuf = buf;
@@ -428,12 +429,15 @@ static int scan_block_fast(struct nand_chip *this, struct nand_bbt_descr *bd,
ops.datbuf = NULL;
ops.mode = MTD_OPS_PLACE_OOB;
- for (j = 0; j < numpages; j++) {
+ page_offset = nand_bbm_get_next_page(this, 0);
+
+ while (page_offset >= 0) {
/*
* 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);
+ ret = mtd_read_oob(mtd, offs + (page_offset * mtd->writesize),
+ &ops);
/* Ignore ECC errors when checking for BBM */
if (ret && !mtd_is_bitflip_or_eccerr(ret))
return ret;
@@ -441,8 +445,9 @@ static int scan_block_fast(struct nand_chip *this, struct nand_bbt_descr *bd,
if (check_short_pattern(buf, bd))
return 1;
- offs += mtd->writesize;
+ page_offset = nand_bbm_get_next_page(this, page_offset + 1);
}
+
return 0;
}
@@ -462,18 +467,11 @@ static int create_bbt(struct nand_chip *this, uint8_t *buf,
{
u64 targetsize = nanddev_target_size(&this->base);
struct mtd_info *mtd = nand_to_mtd(this);
- int i, numblocks, numpages;
- int startblock;
+ int i, numblocks, startblock;
loff_t from;
pr_info("Scanning device for bad blocks\n");
- if ((this->options & NAND_BBM_FIRSTPAGE) &&
- (this->options & NAND_BBM_SECONDPAGE))
- numpages = 2;
- else
- numpages = 1;
-
if (chip == -1) {
numblocks = mtd->size >> this->bbt_erase_shift;
startblock = 0;
@@ -490,15 +488,12 @@ static int create_bbt(struct nand_chip *this, uint8_t *buf,
from = (loff_t)startblock << this->bbt_erase_shift;
}
- if (this->options & NAND_BBM_LASTPAGE)
- from += mtd->erasesize - (mtd->writesize * numpages);
-
for (i = startblock; i < numblocks; i++) {
int ret;
BUG_ON(bd->options & NAND_BBT_NO_OOB);
- ret = scan_block_fast(this, bd, from, buf, numpages);
+ ret = scan_block_fast(this, bd, from, buf);
if (ret < 0)
return ret;
--
2.17.1
______________________________________________________
Linux MTD discussion mailing list
http://lists.infradead.org/mailman/listinfo/linux-mtd/
^ permalink raw reply related [flat|nested] 9+ messages in thread* [PATCH v6 7/7] mtd: rawnand: AMD: Also use the last page for bad block markers
2019-04-17 12:36 [PATCH v6 0/7] mtd: rawnand: Support bad block markers in first, second or last page Schrempf Frieder
` (5 preceding siblings ...)
2019-04-17 12:36 ` [PATCH v6 5/7] mtd: rawnand: Support bad block markers in first, second or last page Schrempf Frieder
@ 2019-04-17 12:36 ` Schrempf Frieder
2019-04-18 16:25 ` [PATCH v6 0/7] mtd: rawnand: Support bad block markers in first, second or last page Miquel Raynal
7 siblings, 0 replies; 9+ messages in thread
From: Schrempf Frieder @ 2019-04-17 12:36 UTC (permalink / raw)
To: bbrezillon, miquel.raynal, richard, linux-kernel
Cc: David Woodhouse, Brian Norris, linux-mtd, Schrempf Frieder, Marek Vasut
From: Frieder Schrempf <frieder.schrempf@kontron.de>
According to the datasheet of some Cypress SLC NANDs, the bad
block markers can be in the first, second or last page of a block.
So let's check all three locations.
Signed-off-by: Frieder Schrempf <frieder.schrempf@kontron.de>
Reviewed-by: Boris Brezillon <bbrezillon@kernel.org>
Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com>
---
drivers/mtd/nand/raw/nand_amd.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/drivers/mtd/nand/raw/nand_amd.c b/drivers/mtd/nand/raw/nand_amd.c
index 1417559d3057..6217555c19a6 100644
--- a/drivers/mtd/nand/raw/nand_amd.c
+++ b/drivers/mtd/nand/raw/nand_amd.c
@@ -45,7 +45,13 @@ static void amd_nand_decode_id(struct nand_chip *chip)
static int amd_nand_init(struct nand_chip *chip)
{
if (nand_is_slc(chip))
- chip->options |= NAND_BBM_FIRSTPAGE | NAND_BBM_SECONDPAGE;
+ /*
+ * According to the datasheet of some Cypress SLC NANDs,
+ * the bad block markers can be in the first, second or last
+ * page of a block. So let's check all three locations.
+ */
+ chip->options |= NAND_BBM_FIRSTPAGE | NAND_BBM_SECONDPAGE |
+ NAND_BBM_LASTPAGE;
return 0;
}
--
2.17.1
______________________________________________________
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http://lists.infradead.org/mailman/listinfo/linux-mtd/
^ permalink raw reply related [flat|nested] 9+ messages in thread* Re: [PATCH v6 0/7] mtd: rawnand: Support bad block markers in first, second or last page
2019-04-17 12:36 [PATCH v6 0/7] mtd: rawnand: Support bad block markers in first, second or last page Schrempf Frieder
` (6 preceding siblings ...)
2019-04-17 12:36 ` [PATCH v6 7/7] mtd: rawnand: AMD: Also use the last page for bad block markers Schrempf Frieder
@ 2019-04-18 16:25 ` Miquel Raynal
7 siblings, 0 replies; 9+ messages in thread
From: Miquel Raynal @ 2019-04-18 16:25 UTC (permalink / raw)
To: Schrempf Frieder; +Cc: richard, linux-mtd, linux-kernel, bbrezillon
Hi Schrempf,
Schrempf Frieder <frieder.schrempf@kontron.de> wrote on Wed, 17 Apr
2019 12:36:33 +0000:
> From: Frieder Schrempf <frieder.schrempf@kontron.de>
>
> Currently supported bad block marker positions within the block are:
> * in first page only
> * in last page only
> * in first or second page
>
> After some cleanup and preparation in patches 1 to 4 we make it
> possible to set NAND_BBM_FIRSTPAGE, NAND_BBM_SECONDPAGE and
> NAND_BBM_LASTPAGE independently of each other (patch 5).
>
> Some ESMT NANDs are known to have been shipped by the manufacturer
> with bad block markers in the first or last page, instead of the
> first or second page.
>
> Also the datasheets for Cypress/Spansion/AMD NANDs claim that the
> first, second *and* last page needs to be checked.
>
> Therefore in patch 6 and 7 we set all three flags for
> AMD/Spansion/Cypress and ESMT chips.
> ---
> Changes in v6:
> ==============
> * None (v5 was missing some of the mentioned fixes)
>
> Changes in v5:
> ==============
> * Rebase onto current nand/next
> * Fix nand_bbm_get_next_page() docs
> * Use inclusive values for start page in nand_bbm_get_next_page()
> * Return -EINVAL from nand_bbm_get_next_page() when no more pages are available
> * Improve code style in nand_block_bad()
> * Add parentheses in scan_block_fast() and nand_default_block_markbad()
> * Unsign badblockpos field in struct nand_chip and struct onenand_chip
> * Add R-b tags
>
> Changes in v4:
> ==============
> * Move onenand changes to separate patch
> * Add missing badblockpos field to onenand_chip struct
> * Move cleanup of badblockpos field and flags to separate patch
> * Move assignemnt of badblockpos from onenand_bbt.c to onenand_base.c
> * Fix incorrect usage of bbt_options in nand_bbt.c
> * Add R-b tags
>
> Changes in v3:
> ==============
> * Fix bit offsets for new flags in nand_chip->options
> * Move separation of flags for first and second page markers to a
> separate patch
> * Fix cover letter
> * Fix S-o-b tag
> * Add R-b tags
>
> Changes in v2:
> ==============
> * Rebase on 5.0-rc1
> * Add patch to move bad block marker position info to a common place and
> rename/prepare existing flags
> * improve/rename function nand_bbm_get_next_page() to use new flags
> ---
> Frieder Schrempf (7):
> mtd: rawnand: Always store info about bad block markers in chip struct
> mtd: onenand: Store bad block marker position in chip struct
> mtd: nand: Cleanup flags and fields for bad block marker position
> mtd: nand: Make flags for bad block marker position more granular
> mtd: rawnand: Support bad block markers in first, second or last page
> mtd: rawnand: ESMT: Also use the last page for bad block markers
> mtd: rawnand: AMD: Also use the last page for bad block markers
>
> drivers/mtd/nand/onenand/onenand_base.c | 5 +-
> drivers/mtd/nand/onenand/onenand_bbt.c | 3 --
> drivers/mtd/nand/raw/internals.h | 1 +
> drivers/mtd/nand/raw/nand_amd.c | 8 ++-
> drivers/mtd/nand/raw/nand_base.c | 65 +++++++++++++++++--------
> drivers/mtd/nand/raw/nand_bbt.c | 28 +++++------
> drivers/mtd/nand/raw/nand_esmt.c | 9 +++-
> drivers/mtd/nand/raw/nand_hynix.c | 4 +-
> drivers/mtd/nand/raw/nand_macronix.c | 2 +-
> drivers/mtd/nand/raw/nand_micron.c | 2 +-
> drivers/mtd/nand/raw/nand_samsung.c | 4 +-
> drivers/mtd/nand/raw/nand_toshiba.c | 2 +-
> drivers/mtd/nand/raw/sh_flctl.c | 4 +-
> include/linux/mtd/bbm.h | 14 +-----
> include/linux/mtd/onenand.h | 3 ++
> include/linux/mtd/rawnand.h | 17 ++++++-
> 16 files changed, 106 insertions(+), 65 deletions(-)
>
Series applied to
https://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux.git
branch nand/next.
Thanks,
Miquèl
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