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Subject[PATCH v3 2/5] mtd: nand: Make flags for bad block marker position more granular
Date
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>
---
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 6e248bdcc797..6202cbf7ee8d 100644
--- a/drivers/mtd/nand/raw/nand_amd.c
+++ b/drivers/mtd/nand/raw/nand_amd.c
@@ -40,7 +40,7 @@ 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 c6199cc68d2f..9ef7b86cdc42 100644
--- a/drivers/mtd/nand/raw/nand_base.c
+++ b/drivers/mtd/nand/raw/nand_base.c
@@ -302,7 +302,8 @@ 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);
@@ -550,7 +551,8 @@ 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 862eaa3a0552..c095c04d566d 100644
--- a/drivers/mtd/nand/raw/nand_bbt.c
+++ b/drivers/mtd/nand/raw/nand_bbt.c
@@ -466,7 +466,8 @@ 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 80d2d3a1b5f2..99a8092969a7 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 2789bf3857c9..e685d70c1618 100644
--- a/drivers/mtd/nand/raw/nand_hynix.c
+++ b/drivers/mtd/nand/raw/nand_hynix.c
@@ -674,7 +674,7 @@ 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 ea6b6e80d6f8..ca80e09783c7 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 3be737139210..ace50522dd19 100644
--- a/drivers/mtd/nand/raw/nand_samsung.c
+++ b/drivers/mtd/nand/raw/nand_samsung.c
@@ -123,7 +123,7 @@ 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 222a66bf0aa6..0031e6727193 100644
--- a/drivers/mtd/nand/raw/nand_toshiba.c
+++ b/drivers/mtd/nand/raw/nand_toshiba.c
@@ -147,7 +147,7 @@ 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 2017b00fadd8..971d9afd55e5 100644
--- a/drivers/mtd/nand/raw/sh_flctl.c
+++ b/drivers/mtd/nand/raw/sh_flctl.c
@@ -1176,7 +1176,7 @@ 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 da785d92e26e..23ad4ad790af 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
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