diff options
| author | Kyungmin Park <kyungmin.park@samsung.com> | 2011-10-14 05:15:48 (GMT) |
|---|---|---|
| committer | Chris Ball <cjb@laptop.org> | 2011-10-26 20:32:26 (GMT) |
| commit | d9ddd62943ee07a75d0428ffcf52f1a747a28c39 (patch) | |
| tree | e4fb8b0b2ba2fe39bf725762b2c04441f1adf3b8 | |
| parent | 4e0a5adf46ee7810af2e1b7e4e8c2a298652618e (diff) | |
| download | linux-d9ddd62943ee07a75d0428ffcf52f1a747a28c39.tar.xz | |
mmc: core: mmc sanitize feature support for v4.5
In the v4.5, there's no secure erase & trim support.
Instead it supports the sanitize feature.
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
| -rw-r--r-- | drivers/mmc/card/block.c | 9 | ||||
| -rw-r--r-- | drivers/mmc/card/queue.c | 2 | ||||
| -rw-r--r-- | drivers/mmc/core/core.c | 8 | ||||
| -rw-r--r-- | include/linux/mmc/core.h | 1 | ||||
| -rw-r--r-- | include/linux/mmc/mmc.h | 2 |
5 files changed, 20 insertions, 2 deletions
diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c index 049445eb..e85816e 100644 --- a/drivers/mmc/card/block.c +++ b/drivers/mmc/card/block.c @@ -792,11 +792,18 @@ static int mmc_blk_issue_secdiscard_rq(struct mmc_queue *mq, unsigned int from, nr, arg; int err = 0, type = MMC_BLK_SECDISCARD; - if (!mmc_can_secure_erase_trim(card)) { + if (!(mmc_can_secure_erase_trim(card) || mmc_can_sanitize(card))) { err = -EOPNOTSUPP; goto out; } + /* The sanitize operation is supported at v4.5 only */ + if (mmc_can_sanitize(card)) { + err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, + EXT_CSD_SANITIZE_START, 1, 0); + goto out; + } + from = blk_rq_pos(req); nr = blk_rq_sectors(req); diff --git a/drivers/mmc/card/queue.c b/drivers/mmc/card/queue.c index fed290e..dcad59c 100644 --- a/drivers/mmc/card/queue.c +++ b/drivers/mmc/card/queue.c @@ -140,7 +140,7 @@ static void mmc_queue_setup_discard(struct request_queue *q, /* granularity must not be greater than max. discard */ if (card->pref_erase > max_discard) q->limits.discard_granularity = 0; - if (mmc_can_secure_erase_trim(card)) + if (mmc_can_secure_erase_trim(card) || mmc_can_sanitize(card)) queue_flag_set_unlocked(QUEUE_FLAG_SECDISCARD, q); } diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c index a3c4e0f..d9836e5 100644 --- a/drivers/mmc/core/core.c +++ b/drivers/mmc/core/core.c @@ -1713,6 +1713,14 @@ int mmc_can_trim(struct mmc_card *card) } EXPORT_SYMBOL(mmc_can_trim); +int mmc_can_sanitize(struct mmc_card *card) +{ + if (card->ext_csd.sec_feature_support & EXT_CSD_SEC_SANITIZE) + return 1; + return 0; +} +EXPORT_SYMBOL(mmc_can_sanitize); + int mmc_can_secure_erase_trim(struct mmc_card *card) { if (card->ext_csd.sec_feature_support & EXT_CSD_SEC_ER_EN) diff --git a/include/linux/mmc/core.h b/include/linux/mmc/core.h index 56e5625..9585835 100644 --- a/include/linux/mmc/core.h +++ b/include/linux/mmc/core.h @@ -156,6 +156,7 @@ extern int mmc_erase(struct mmc_card *card, unsigned int from, unsigned int nr, unsigned int arg); extern int mmc_can_erase(struct mmc_card *card); extern int mmc_can_trim(struct mmc_card *card); +extern int mmc_can_sanitize(struct mmc_card *card); extern int mmc_can_secure_erase_trim(struct mmc_card *card); extern int mmc_erase_group_aligned(struct mmc_card *card, unsigned int from, unsigned int nr); diff --git a/include/linux/mmc/mmc.h b/include/linux/mmc/mmc.h index 02e9e3d..8a05a21 100644 --- a/include/linux/mmc/mmc.h +++ b/include/linux/mmc/mmc.h @@ -275,6 +275,7 @@ struct _mmc_csd { #define EXT_CSD_PARTITION_ATTRIBUTE 156 /* R/W */ #define EXT_CSD_PARTITION_SUPPORT 160 /* RO */ #define EXT_CSD_RST_N_FUNCTION 162 /* R/W */ +#define EXT_CSD_SANITIZE_START 165 /* W */ #define EXT_CSD_WR_REL_PARAM 166 /* RO */ #define EXT_CSD_ERASE_GROUP_DEF 175 /* R/W */ #define EXT_CSD_PART_CONFIG 179 /* R/W */ @@ -343,6 +344,7 @@ struct _mmc_csd { #define EXT_CSD_SEC_ER_EN BIT(0) #define EXT_CSD_SEC_BD_BLK_EN BIT(2) #define EXT_CSD_SEC_GB_CL_EN BIT(4) +#define EXT_CSD_SEC_SANITIZE BIT(6) /* v4.5 only */ #define EXT_CSD_RST_N_EN_MASK 0x3 #define EXT_CSD_RST_N_ENABLED 1 /* RST_n is enabled on card */ |