[PATCH] mmc: core: SD: Add BROKEN-SD-DISCARD quirk

Avri Altman posted 1 patch 4 days, 12 hours ago
drivers/mmc/core/block.c  | 6 +++++-
drivers/mmc/core/card.h   | 1 +
drivers/mmc/core/quirks.h | 6 ++++++
include/linux/mmc/card.h  | 1 +
4 files changed, 13 insertions(+), 1 deletion(-)
[PATCH] mmc: core: SD: Add BROKEN-SD-DISCARD quirk
Posted by Avri Altman 4 days, 12 hours ago
Some SD-cards that are SDA-6.0 compliant reports they supports discard
while they actually don't.  This might cause mk2fs to fail while trying
to format the card and revert it to a read-only mode.

While at it, add SD MID for SANDISK. This is because eMMC MID is assign
by JEDEC and SD MID is assigned by SD 3c-LLC.

Signed-off-by: Avri Altman <avri.altman@wdc.com>
---
 drivers/mmc/core/block.c  | 6 +++++-
 drivers/mmc/core/card.h   | 1 +
 drivers/mmc/core/quirks.h | 6 ++++++
 include/linux/mmc/card.h  | 1 +
 4 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/drivers/mmc/core/block.c b/drivers/mmc/core/block.c
index ce89611a136e..a31dc915c5ec 100644
--- a/drivers/mmc/core/block.c
+++ b/drivers/mmc/core/block.c
@@ -1140,8 +1140,12 @@ static void mmc_blk_issue_discard_rq(struct mmc_queue *mq, struct request *req)
 {
 	struct mmc_blk_data *md = mq->blkdata;
 	struct mmc_card *card = md->queue.card;
+	unsigned int arg = card->erase_arg;
 
-	mmc_blk_issue_erase_rq(mq, req, MMC_BLK_DISCARD, card->erase_arg);
+	if (mmc_card_sd(card) && (card->quirks & MMC_QUIRK_BROKEN_SD_DISCARD))
+		arg = SD_ERASE_ARG;
+
+	mmc_blk_issue_erase_rq(mq, req, MMC_BLK_DISCARD, arg);
 }
 
 static void mmc_blk_issue_secdiscard_rq(struct mmc_queue *mq,
diff --git a/drivers/mmc/core/card.h b/drivers/mmc/core/card.h
index 99045e138ba4..881432309b46 100644
--- a/drivers/mmc/core/card.h
+++ b/drivers/mmc/core/card.h
@@ -73,6 +73,7 @@ struct mmc_fixup {
 #define EXT_CSD_REV_ANY (-1u)
 
 #define CID_MANFID_SANDISK      0x2
+#define CID_MANFID_SANDISK_SD   0x3
 #define CID_MANFID_ATP          0x9
 #define CID_MANFID_TOSHIBA      0x11
 #define CID_MANFID_MICRON       0x13
diff --git a/drivers/mmc/core/quirks.h b/drivers/mmc/core/quirks.h
index be4393988086..29b9497936df 100644
--- a/drivers/mmc/core/quirks.h
+++ b/drivers/mmc/core/quirks.h
@@ -100,6 +100,12 @@ static const struct mmc_fixup __maybe_unused mmc_blk_fixups[] = {
 	MMC_FIXUP("V10016", CID_MANFID_KINGSTON, CID_OEMID_ANY, add_quirk_mmc,
 		  MMC_QUIRK_TRIM_BROKEN),
 
+	/*
+	 * Some SD cards reports discard support while they don't
+	 */
+	MMC_FIXUP(CID_NAME_ANY, CID_MANFID_SANDISK_SD, 0x5344, add_quirk_sd,
+		  MMC_QUIRK_BROKEN_SD_DISCARD),
+
 	END_FIXUP
 };
 
diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h
index 8a30de08e913..c726ea781255 100644
--- a/include/linux/mmc/card.h
+++ b/include/linux/mmc/card.h
@@ -293,6 +293,7 @@ struct mmc_card {
 #define MMC_QUIRK_BROKEN_IRQ_POLLING	(1<<11)	/* Polling SDIO_CCCR_INTx could create a fake interrupt */
 #define MMC_QUIRK_TRIM_BROKEN	(1<<12)		/* Skip trim */
 #define MMC_QUIRK_BROKEN_HPI	(1<<13)		/* Disable broken HPI support */
+#define MMC_QUIRK_BROKEN_SD_DISCARD	(1<<14)	/* Disable broken SD discard support */
 
 	bool			reenable_cmdq;	/* Re-enable Command Queue */
 
-- 
2.17.1
Re: [PATCH] mmc: core: SD: Add BROKEN-SD-DISCARD quirk
Posted by Ulf Hansson 14 hours ago
On Fri, 23 Sept 2022 at 15:56, Avri Altman <avri.altman@wdc.com> wrote:
>
> Some SD-cards that are SDA-6.0 compliant reports they supports discard
> while they actually don't.  This might cause mk2fs to fail while trying
> to format the card and revert it to a read-only mode.
>
> While at it, add SD MID for SANDISK. This is because eMMC MID is assign
> by JEDEC and SD MID is assigned by SD 3c-LLC.
>
> Signed-off-by: Avri Altman <avri.altman@wdc.com>
> ---
>  drivers/mmc/core/block.c  | 6 +++++-
>  drivers/mmc/core/card.h   | 1 +
>  drivers/mmc/core/quirks.h | 6 ++++++
>  include/linux/mmc/card.h  | 1 +
>  4 files changed, 13 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/mmc/core/block.c b/drivers/mmc/core/block.c
> index ce89611a136e..a31dc915c5ec 100644
> --- a/drivers/mmc/core/block.c
> +++ b/drivers/mmc/core/block.c
> @@ -1140,8 +1140,12 @@ static void mmc_blk_issue_discard_rq(struct mmc_queue *mq, struct request *req)
>  {
>         struct mmc_blk_data *md = mq->blkdata;
>         struct mmc_card *card = md->queue.card;
> +       unsigned int arg = card->erase_arg;
>
> -       mmc_blk_issue_erase_rq(mq, req, MMC_BLK_DISCARD, card->erase_arg);
> +       if (mmc_card_sd(card) && (card->quirks & MMC_QUIRK_BROKEN_SD_DISCARD))

There's no need for the mmc_card_sd() here, as the quirk can't be set
unless it's the SD card type (see add_quirk_sd()).

Moreover, I would prefer if we can use a helper function
(mmc_card_broken_sd_discard()), that checks the new quirk bit. Similar
helpers are already available in drivers/mmc/core/card.h.

> +               arg = SD_ERASE_ARG;
> +
> +       mmc_blk_issue_erase_rq(mq, req, MMC_BLK_DISCARD, arg);
>  }
>
>  static void mmc_blk_issue_secdiscard_rq(struct mmc_queue *mq,
> diff --git a/drivers/mmc/core/card.h b/drivers/mmc/core/card.h
> index 99045e138ba4..881432309b46 100644
> --- a/drivers/mmc/core/card.h
> +++ b/drivers/mmc/core/card.h
> @@ -73,6 +73,7 @@ struct mmc_fixup {
>  #define EXT_CSD_REV_ANY (-1u)
>
>  #define CID_MANFID_SANDISK      0x2
> +#define CID_MANFID_SANDISK_SD   0x3
>  #define CID_MANFID_ATP          0x9
>  #define CID_MANFID_TOSHIBA      0x11
>  #define CID_MANFID_MICRON       0x13
> diff --git a/drivers/mmc/core/quirks.h b/drivers/mmc/core/quirks.h
> index be4393988086..29b9497936df 100644
> --- a/drivers/mmc/core/quirks.h
> +++ b/drivers/mmc/core/quirks.h
> @@ -100,6 +100,12 @@ static const struct mmc_fixup __maybe_unused mmc_blk_fixups[] = {
>         MMC_FIXUP("V10016", CID_MANFID_KINGSTON, CID_OEMID_ANY, add_quirk_mmc,
>                   MMC_QUIRK_TRIM_BROKEN),
>
> +       /*
> +        * Some SD cards reports discard support while they don't
> +        */
> +       MMC_FIXUP(CID_NAME_ANY, CID_MANFID_SANDISK_SD, 0x5344, add_quirk_sd,
> +                 MMC_QUIRK_BROKEN_SD_DISCARD),
> +
>         END_FIXUP
>  };
>
> diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h
> index 8a30de08e913..c726ea781255 100644
> --- a/include/linux/mmc/card.h
> +++ b/include/linux/mmc/card.h
> @@ -293,6 +293,7 @@ struct mmc_card {
>  #define MMC_QUIRK_BROKEN_IRQ_POLLING   (1<<11) /* Polling SDIO_CCCR_INTx could create a fake interrupt */
>  #define MMC_QUIRK_TRIM_BROKEN  (1<<12)         /* Skip trim */
>  #define MMC_QUIRK_BROKEN_HPI   (1<<13)         /* Disable broken HPI support */
> +#define MMC_QUIRK_BROKEN_SD_DISCARD    (1<<14) /* Disable broken SD discard support */
>
>         bool                    reenable_cmdq;  /* Re-enable Command Queue */
>
> --
> 2.17.1
>

Other than the minor nitpicks above, this looks good to me!

Kind regards
Uffe
RE: [PATCH] mmc: core: SD: Add BROKEN-SD-DISCARD quirk
Posted by Avri Altman 13 hours ago
> > diff --git a/drivers/mmc/core/block.c b/drivers/mmc/core/block.c
> > index ce89611a136e..a31dc915c5ec 100644
> > --- a/drivers/mmc/core/block.c
> > +++ b/drivers/mmc/core/block.c
> > @@ -1140,8 +1140,12 @@ static void mmc_blk_issue_discard_rq(struct
> mmc_queue *mq, struct request *req)
> >  {
> >         struct mmc_blk_data *md = mq->blkdata;
> >         struct mmc_card *card = md->queue.card;
> > +       unsigned int arg = card->erase_arg;
> >
> > -       mmc_blk_issue_erase_rq(mq, req, MMC_BLK_DISCARD, card-
> >erase_arg);
> > +       if (mmc_card_sd(card) && (card->quirks &
> MMC_QUIRK_BROKEN_SD_DISCARD))
> 
> There's no need for the mmc_card_sd() here, as the quirk can't be set
> unless it's the SD card type (see add_quirk_sd()).
Done.

> 
> Moreover, I would prefer if we can use a helper function
> (mmc_card_broken_sd_discard()), that checks the new quirk bit. Similar
> helpers are already available in drivers/mmc/core/card.h.
Done.


> 
> > +               arg = SD_ERASE_ARG;
> > +
> > +       mmc_blk_issue_erase_rq(mq, req, MMC_BLK_DISCARD, arg);
> >  }
> >
> >  static void mmc_blk_issue_secdiscard_rq(struct mmc_queue *mq,
> > diff --git a/drivers/mmc/core/card.h b/drivers/mmc/core/card.h
> > index 99045e138ba4..881432309b46 100644
> > --- a/drivers/mmc/core/card.h
> > +++ b/drivers/mmc/core/card.h
> > @@ -73,6 +73,7 @@ struct mmc_fixup {
> >  #define EXT_CSD_REV_ANY (-1u)
> >
> >  #define CID_MANFID_SANDISK      0x2
> > +#define CID_MANFID_SANDISK_SD   0x3
> >  #define CID_MANFID_ATP          0x9
> >  #define CID_MANFID_TOSHIBA      0x11
> >  #define CID_MANFID_MICRON       0x13
> > diff --git a/drivers/mmc/core/quirks.h b/drivers/mmc/core/quirks.h
> > index be4393988086..29b9497936df 100644
> > --- a/drivers/mmc/core/quirks.h
> > +++ b/drivers/mmc/core/quirks.h
> > @@ -100,6 +100,12 @@ static const struct mmc_fixup __maybe_unused
> mmc_blk_fixups[] = {
> >         MMC_FIXUP("V10016", CID_MANFID_KINGSTON, CID_OEMID_ANY,
> add_quirk_mmc,
> >                   MMC_QUIRK_TRIM_BROKEN),
> >
> > +       /*
> > +        * Some SD cards reports discard support while they don't
> > +        */
> > +       MMC_FIXUP(CID_NAME_ANY, CID_MANFID_SANDISK_SD, 0x5344,
> add_quirk_sd,
> > +                 MMC_QUIRK_BROKEN_SD_DISCARD),
> > +
> >         END_FIXUP
> >  };
> >
> > diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h
> > index 8a30de08e913..c726ea781255 100644
> > --- a/include/linux/mmc/card.h
> > +++ b/include/linux/mmc/card.h
> > @@ -293,6 +293,7 @@ struct mmc_card {
> >  #define MMC_QUIRK_BROKEN_IRQ_POLLING   (1<<11) /* Polling
> SDIO_CCCR_INTx could create a fake interrupt */
> >  #define MMC_QUIRK_TRIM_BROKEN  (1<<12)         /* Skip trim */
> >  #define MMC_QUIRK_BROKEN_HPI   (1<<13)         /* Disable broken HPI
> support */
> > +#define MMC_QUIRK_BROKEN_SD_DISCARD    (1<<14) /* Disable broken
> SD discard support */
> >
> >         bool                    reenable_cmdq;  /* Re-enable Command Queue */
> >
> > --
> > 2.17.1
> >
> 
> Other than the minor nitpicks above, this looks good to me!

Thanks,
Avri
> 
> Kind regards
> Uffe