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>
diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c
index 049445e..e85816e 100644
--- a/drivers/mmc/card/block.c
+++ b/drivers/mmc/card/block.c
@@ -792,11 +792,18 @@
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 @@
/* 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 @@
}
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)