Re: [PATCH v3] mmc: card: Skip secure option for MoviNAND.
On 08/16/2012 01:09 PM, IAN CHEN wrote: > MMC_QUIRK_SEC_ERASE_TRIM_BROKEN seems quite clear but I might not use "SEC" > due to it could be Samsung Electronics Corporation. I didn't think so. MMC developers didn't think that SEC means Samsung Electronics Corporation. Already we used the flags with "_SEC_" It's no problem. Best Regards, Jaehoon Chung > So, how about MMC_QUIRK_SECDISCARD_BROKEN which was used in > mmc_blk_issue_secdiscard_rq() naming, the function we skip. > Or, MMC_QUIRK_SECERASE_SECTRIM_BROKEN? > > Regards, > Ian > -Original Message- > From: Linus Walleij [mailto:linus.wall...@linaro.org] > Sent: Tuesday, August 14, 2012 5:07 PM > To: IAN CHEN > Cc: c...@laptop.org; linkinj...@gmail.com; adrian.hun...@intel.com; > subha...@codeaurora.org; linux-...@vger.kernel.org; > linux-kernel@vger.kernel.org; d.j.s...@samsung.com; > jongtae22....@samsung.com; kyungmin.p...@samsung.com; jh80.ch...@samsung.com > Subject: Re: [PATCH v3] mmc: card: Skip secure option for MoviNAND. > > On Tue, Aug 14, 2012 at 9:06 AM, IAN CHEN wrote: > >> +#define MMC_QUIRK_SECURE_MODE_BROKEN (1<<10) /* Skip secure for >> erase/trim */ > > OK this will work and sorry for being picky, but we are working with RPMB > support and that's some other "secure mode" so to avoid any > misuderstandings it's better to name the flag like I proposed, > MMC_QUIRK_SEC_ERASE_TRIM_BROKEN > > I won't die if this goes in though :-) > > Yours, > Linus Walleij > > -- > To unsubscribe from this list: send the line "unsubscribe linux-mmc" in > the body of a message to majord...@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
RE: [PATCH v3] mmc: card: Skip secure option for MoviNAND.
MMC_QUIRK_SEC_ERASE_TRIM_BROKEN seems quite clear but I might not use "SEC" due to it could be Samsung Electronics Corporation. So, how about MMC_QUIRK_SECDISCARD_BROKEN which was used in mmc_blk_issue_secdiscard_rq() naming, the function we skip. Or, MMC_QUIRK_SECERASE_SECTRIM_BROKEN? Regards, Ian -Original Message- From: Linus Walleij [mailto:linus.wall...@linaro.org] Sent: Tuesday, August 14, 2012 5:07 PM To: IAN CHEN Cc: c...@laptop.org; linkinj...@gmail.com; adrian.hun...@intel.com; subha...@codeaurora.org; linux-...@vger.kernel.org; linux-kernel@vger.kernel.org; d.j.s...@samsung.com; jongtae22@samsung.com; kyungmin.p...@samsung.com; jh80.ch...@samsung.com Subject: Re: [PATCH v3] mmc: card: Skip secure option for MoviNAND. On Tue, Aug 14, 2012 at 9:06 AM, IAN CHEN wrote: > +#define MMC_QUIRK_SECURE_MODE_BROKEN (1<<10) /* Skip secure for > erase/trim */ OK this will work and sorry for being picky, but we are working with RPMB support and that's some other "secure mode" so to avoid any misuderstandings it's better to name the flag like I proposed, MMC_QUIRK_SEC_ERASE_TRIM_BROKEN I won't die if this goes in though :-) Yours, Linus Walleij -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: [PATCH v3] mmc: card: Skip secure option for MoviNAND.
Looks good to me
Acked-by: Jaehoon Chung
2012/8/14 IAN CHEN :
> For several MoviNAND, there are some known issue with secure option.
> For these specific MoviNAND device, we skip secure option.
>
> You could refer this discussion in XDA developers.
> http://forum.xda-developers.com/showthread.php?t=1644364
> https://plus.google.com/111398485184813224730/posts/21pTYfTsCkB#111398485184813224730/posts/21pTYfTsCkB
>
> Signed-off-by: Ian Chen
> ---
> drivers/mmc/card/block.c | 24 +++-
> include/linux/mmc/card.h |1 +
> 2 files changed, 24 insertions(+), 1 deletions(-)
>
> diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c
> index f1c84de..8d2de7e 100644
> --- a/drivers/mmc/card/block.c
> +++ b/drivers/mmc/card/block.c
> @@ -1411,7 +1411,8 @@ static int mmc_blk_issue_rq(struct mmc_queue *mq,
> struct request *req)
> /* complete ongoing async transfer before issuing discard */
> if (card->host->areq)
> mmc_blk_issue_rw_rq(mq, NULL);
> - if (req->cmd_flags & REQ_SECURE)
> + if (req->cmd_flags & REQ_SECURE &&
> + !(card->quirks & MMC_QUIRK_SECURE_MODE_BROKEN))
> ret = mmc_blk_issue_secdiscard_rq(mq, req);
> else
> ret = mmc_blk_issue_discard_rq(mq, req);
> @@ -1716,6 +1717,7 @@ force_ro_fail:
> #define CID_MANFID_SANDISK 0x2
> #define CID_MANFID_TOSHIBA 0x11
> #define CID_MANFID_MICRON 0x13
> +#define CID_MANFID_SAMSUNG 0x15
>
> static const struct mmc_fixup blk_fixups[] =
> {
> @@ -1752,6 +1754,26 @@ static const struct mmc_fixup blk_fixups[] =
> MMC_FIXUP(CID_NAME_ANY, CID_MANFID_MICRON, 0x200, add_quirk_mmc,
> MMC_QUIRK_LONG_READ_TIME),
>
> + /*
> +* Some issue about secure erase/secure trim for Samsung MoviNAND
> +*/
> + MMC_FIXUP("M8G2FA", CID_MANFID_SAMSUNG, CID_OEMID_ANY, add_quirk_mmc,
> + MMC_QUIRK_SECURE_MODE_BROKEN),
> + MMC_FIXUP("MAG4FA", CID_MANFID_SAMSUNG, CID_OEMID_ANY, add_quirk_mmc,
> + MMC_QUIRK_SECURE_MODE_BROKEN),
> + MMC_FIXUP("MBG8FA", CID_MANFID_SAMSUNG, CID_OEMID_ANY, add_quirk_mmc,
> + MMC_QUIRK_SECURE_MODE_BROKEN),
> + MMC_FIXUP("MCGAFA", CID_MANFID_SAMSUNG, CID_OEMID_ANY, add_quirk_mmc,
> + MMC_QUIRK_SECURE_MODE_BROKEN),
> + MMC_FIXUP("VAL00M", CID_MANFID_SAMSUNG, CID_OEMID_ANY, add_quirk_mmc,
> + MMC_QUIRK_SECURE_MODE_BROKEN),
> + MMC_FIXUP("VYL00M", CID_MANFID_SAMSUNG, CID_OEMID_ANY, add_quirk_mmc,
> + MMC_QUIRK_SECURE_MODE_BROKEN),
> + MMC_FIXUP("KYL00M", CID_MANFID_SAMSUNG, CID_OEMID_ANY, add_quirk_mmc,
> + MMC_QUIRK_SECURE_MODE_BROKEN),
> + MMC_FIXUP("VZL00M", CID_MANFID_SAMSUNG, CID_OEMID_ANY, add_quirk_mmc,
> + MMC_QUIRK_SECURE_MODE_BROKEN),
> +
> END_FIXUP
> };
>
> diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h
> index 111aca5..e7ec522 100644
> --- a/include/linux/mmc/card.h
> +++ b/include/linux/mmc/card.h
> @@ -239,6 +239,7 @@ struct mmc_card {
> #define MMC_QUIRK_BLK_NO_CMD23 (1<<7) /* Avoid CMD23 for regular
> multiblock */
> #define MMC_QUIRK_BROKEN_BYTE_MODE_512 (1<<8) /* Avoid sending 512
> bytes in */
> #define MMC_QUIRK_LONG_READ_TIME (1<<9)/* Data read time >
> CSD says */
> +#define MMC_QUIRK_SECURE_MODE_BROKEN (1<<10) /* Skip secure for
> erase/trim */
> /* byte mode */
> unsigned intpoweroff_notify_state; /* eMMC4.5 notify feature */
> #define MMC_NO_POWER_NOTIFICATION 0
> --
> 1.7.0.4
> --
> To unsubscribe from this list: send the line "unsubscribe linux-mmc" in
> the body of a message to majord...@vger.kernel.org
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Please read the FAQ at http://www.tux.org/lkml/
Re: [PATCH v3] mmc: card: Skip secure option for MoviNAND.
On Tue, Aug 14, 2012 at 9:06 AM, IAN CHEN wrote: > +#define MMC_QUIRK_SECURE_MODE_BROKEN (1<<10) /* Skip secure for > erase/trim */ OK this will work and sorry for being picky, but we are working with RPMB support and that's some other "secure mode" so to avoid any misuderstandings it's better to name the flag like I proposed, MMC_QUIRK_SEC_ERASE_TRIM_BROKEN I won't die if this goes in though :-) Yours, Linus Walleij -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: [PATCH v3] mmc: card: Skip secure option for MoviNAND.
2012/8/14, IAN CHEN : > For several MoviNAND, there are some known issue with secure option. > For these specific MoviNAND device, we skip secure option. > > You could refer this discussion in XDA developers. > http://forum.xda-developers.com/showthread.php?t=1644364 > https://plus.google.com/111398485184813224730/posts/21pTYfTsCkB#111398485184813224730/posts/21pTYfTsCkB > > Signed-off-by: Ian Chen > --- Looks good. Reviewed-by: Namjae Jeon -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
