---

yaml --- r: 270298 b: refs/heads/master c: d9ddd62 h: refs/heads/master v: v3
git-mirror · Oct 26, 2011 · b96a5ec · b96a5ec
1 parent 5da3989
commit b96a5ec
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Showing 6 changed files with 21 additions and 3 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 4e0a5adf46ee7810af2e1b7e4e8c2a298652618e
+refs/heads/master: d9ddd62943ee07a75d0428ffcf52f1a747a28c39
diff --git a/trunk/drivers/mmc/card/block.c b/trunk/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/trunk/drivers/mmc/card/queue.c b/trunk/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/trunk/drivers/mmc/core/core.c b/trunk/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/trunk/include/linux/mmc/core.h b/trunk/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/trunk/include/linux/mmc/mmc.h b/trunk/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 */