linux-kernel - Re: [PATCH v2] mmc: card: Skip secure option for MoviNAND.

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Date:	Tue, 14 Aug 2012 13:10:40 +0900
From:	Kyungmin Park <kyungmin.park@...sung.com>
To:	IAN CHEN <ian.cy.chen@...sung.com>
Cc:	cjb@...top.org, linkinjeon@...il.com, adrian.hunter@...el.com,
	subhashj@...eaurora.org, linus.walleij@...aro.org,
	linux-mmc@...r.kernel.org, linux-kernel@...r.kernel.org,
	d.j.shin@...sung.com, jongtae22.kim@...sung.com,
	jh80.chung@...sung.com
Subject: Re: [PATCH v2] mmc: card: Skip secure option for MoviNAND.

and also you should update "MMC_QUIRK_MOVINAND_SECURE" also.

On 8/14/12, Kyungmin Park <kyungmin.park@...sung.com> wrote:
> Hi Ian,
>
> "MMC_QUIRK_SKIP_SECURE"? It seems it support secure discard but want
> to skip. but it's wrong. it's broken feature at listed MoviNAND.
> As linus suggested, SECURE_BROKEN is better.
>
> Thank you,
> Kyungmin Park
>
> On 8/14/12, IAN CHEN <ian.cy.chen@...sung.com> wrote:
>> For several MoviNAND, there are some known issue with secure option.
>> For these specific MoviNAND device, we skip secure option.
>>
>> Signed-off-by: Ian Chen <ian.cy.chen@...sung.com>
>> ---
>>  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..a01cc14 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_SKIP_SECURE))
>>  			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_MOVINAND_SECURE),
>> +	MMC_FIXUP("MAG4FA", CID_MANFID_SAMSUNG, CID_OEMID_ANY, add_quirk_mmc,
>> +		  MMC_QUIRK_MOVINAND_SECURE),
>> +	MMC_FIXUP("MBG8FA", CID_MANFID_SAMSUNG, CID_OEMID_ANY, add_quirk_mmc,
>> +		  MMC_QUIRK_MOVINAND_SECURE),
>> +	MMC_FIXUP("MCGAFA", CID_MANFID_SAMSUNG, CID_OEMID_ANY, add_quirk_mmc,
>> +		  MMC_QUIRK_MOVINAND_SECURE),
>> +	MMC_FIXUP("VAL00M", CID_MANFID_SAMSUNG, CID_OEMID_ANY, add_quirk_mmc,
>> +		  MMC_QUIRK_MOVINAND_SECURE),
>> +	MMC_FIXUP("VYL00M", CID_MANFID_SAMSUNG, CID_OEMID_ANY, add_quirk_mmc,
>> +		  MMC_QUIRK_MOVINAND_SECURE),
>> +	MMC_FIXUP("KYL00M", CID_MANFID_SAMSUNG, CID_OEMID_ANY, add_quirk_mmc,
>> +		  MMC_QUIRK_MOVINAND_SECURE),
>> +	MMC_FIXUP("VZL00M", CID_MANFID_SAMSUNG, CID_OEMID_ANY, add_quirk_mmc,
>> +		  MMC_QUIRK_MOVINAND_SECURE),
>> +
>>  	END_FIXUP
>>  };
>>
>> diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h
>> index 111aca5..b639a92 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_SKIP_SECURE (1<<10)		/* Skip secure for erase/trim */
>>  						/* byte mode */
>>  	unsigned int    poweroff_notify_state;	/* eMMC4.5 notify feature */
>>  #define MMC_NO_POWER_NOTIFICATION	0
>> --
>> 1.7.0.4
>> --
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>>
>
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