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SubjectRe: [PATCH v3 2/5] mtd: nand: Make flags for bad block marker position more granular
On Wed, 30 Jan 2019 13:01:47 +0000
Schrempf Frieder <frieder.schrempf@kontron.de> wrote:

> 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>

> ---
> 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
>

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