1 files changed, 95 insertions, 35 deletions

diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c
index dd27b0783d52..cd0b7f4a1ff2 100644
--- a/drivers/mmc/card/block.c
+++ b/drivers/mmc/card/block.c
@@ -34,6 +34,7 @@
 #include <linux/delay.h>
 #include <linux/capability.h>
 #include <linux/compat.h>
+#include <linux/pm_runtime.h>
 
 #include <linux/mmc/ioctl.h>
 #include <linux/mmc/card.h>
@@ -58,6 +59,8 @@ MODULE_ALIAS("mmc:block");
 #define INAND_CMD38_ARG_SECTRIM1 0x81
 #define INAND_CMD38_ARG_SECTRIM2 0x88
 #define MMC_BLK_TIMEOUT_MS  (10 * 60 * 1000)        /* 10 minute timeout */
+#define MMC_SANITIZE_REQ_TIMEOUT 240000
+#define MMC_EXTRACT_INDEX_FROM_ARG(x) ((x & 0x00FF0000) >> 16)
 
 #define mmc_req_rel_wr(req)	(((req->cmd_flags & REQ_FUA) || \
 				  (req->cmd_flags & REQ_META)) && \
@@ -222,7 +225,7 @@ static ssize_t power_ro_lock_store(struct device *dev,
 	md = mmc_blk_get(dev_to_disk(dev));
 	card = md->queue.card;
 
-	mmc_claim_host(card->host);
+	mmc_get_card(card);
 
 	ret = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BOOT_WP,
 				card->ext_csd.boot_ro_lock |
@@ -233,7 +236,7 @@ static ssize_t power_ro_lock_store(struct device *dev,
 	else
 		card->ext_csd.boot_ro_lock |= EXT_CSD_BOOT_WP_B_PWR_WP_EN;
 
-	mmc_release_host(card->host);
+	mmc_put_card(card);
 
 	if (!ret) {
 		pr_info("%s: Locking boot partition ro until next power on\n",
@@ -408,6 +411,35 @@ static int ioctl_rpmb_card_status_poll(struct mmc_card *card, u32 *status,
 	return err;
 }
 
+static int ioctl_do_sanitize(struct mmc_card *card)
+{
+	int err;
+
+	if (!(mmc_can_sanitize(card) &&
+	      (card->host->caps2 & MMC_CAP2_SANITIZE))) {
+			pr_warn("%s: %s - SANITIZE is not supported\n",
+				mmc_hostname(card->host), __func__);
+			err = -EOPNOTSUPP;
+			goto out;
+	}
+
+	pr_debug("%s: %s - SANITIZE IN PROGRESS...\n",
+		mmc_hostname(card->host), __func__);
+
+	err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
+					EXT_CSD_SANITIZE_START, 1,
+					MMC_SANITIZE_REQ_TIMEOUT);
+
+	if (err)
+		pr_err("%s: %s - EXT_CSD_SANITIZE_START failed. err=%d\n",
+		       mmc_hostname(card->host), __func__, err);
+
+	pr_debug("%s: %s - SANITIZE COMPLETED\n", mmc_hostname(card->host),
+					     __func__);
+out:
+	return err;
+}
+
 static int mmc_blk_ioctl_cmd(struct block_device *bdev,
 	struct mmc_ioc_cmd __user *ic_ptr)
 {
@@ -491,7 +523,7 @@ static int mmc_blk_ioctl_cmd(struct block_device *bdev,
 
 	mrq.cmd = &cmd;
 
-	mmc_claim_host(card->host);
+	mmc_get_card(card);
 
 	err = mmc_blk_part_switch(card, md);
 	if (err)
@@ -510,6 +542,17 @@ static int mmc_blk_ioctl_cmd(struct block_device *bdev,
 			goto cmd_rel_host;
 	}
 
+	if ((MMC_EXTRACT_INDEX_FROM_ARG(cmd.arg) == EXT_CSD_SANITIZE_START) &&
+	    (cmd.opcode == MMC_SWITCH)) {
+		err = ioctl_do_sanitize(card);
+
+		if (err)
+			pr_err("%s: ioctl_do_sanitize() failed. err = %d",
+			       __func__, err);
+
+		goto cmd_rel_host;
+	}
+
 	mmc_wait_for_req(card->host, &mrq);
 
 	if (cmd.error) {
@@ -558,7 +601,7 @@ static int mmc_blk_ioctl_cmd(struct block_device *bdev,
 	}
 
 cmd_rel_host:
-	mmc_release_host(card->host);
+	mmc_put_card(card);
 
 cmd_done:
 	mmc_blk_put(md);
@@ -939,10 +982,10 @@ static int mmc_blk_issue_secdiscard_rq(struct mmc_queue *mq,
 {
 	struct mmc_blk_data *md = mq->data;
 	struct mmc_card *card = md->queue.card;
-	unsigned int from, nr, arg, trim_arg, erase_arg;
+	unsigned int from, nr, arg;
 	int err = 0, type = MMC_BLK_SECDISCARD;
 
-	if (!(mmc_can_secure_erase_trim(card) || mmc_can_sanitize(card))) {
+	if (!(mmc_can_secure_erase_trim(card))) {
 		err = -EOPNOTSUPP;
 		goto out;
 	}
@@ -950,23 +993,11 @@ static int mmc_blk_issue_secdiscard_rq(struct mmc_queue *mq,
 	from = blk_rq_pos(req);
 	nr = blk_rq_sectors(req);
 
-	/* The sanitize operation is supported at v4.5 only */
-	if (mmc_can_sanitize(card)) {
-		erase_arg = MMC_ERASE_ARG;
-		trim_arg = MMC_TRIM_ARG;
-	} else {
-		erase_arg = MMC_SECURE_ERASE_ARG;
-		trim_arg = MMC_SECURE_TRIM1_ARG;
-	}
+	if (mmc_can_trim(card) && !mmc_erase_group_aligned(card, from, nr))
+		arg = MMC_SECURE_TRIM1_ARG;
+	else
+		arg = MMC_SECURE_ERASE_ARG;
 
-	if (mmc_erase_group_aligned(card, from, nr))
-		arg = erase_arg;
-	else if (mmc_can_trim(card))
-		arg = trim_arg;
-	else {
-		err = -EINVAL;
-		goto out;
-	}
 retry:
 	if (card->quirks & MMC_QUIRK_INAND_CMD38) {
 		err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
@@ -1002,9 +1033,6 @@ retry:
 			goto out;
 	}
 
-	if (mmc_can_sanitize(card))
-		err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
-				 EXT_CSD_SANITIZE_START, 1, 0);
 out_retry:
 	if (err && !mmc_blk_reset(md, card->host, type))
 		goto retry;
@@ -1895,7 +1923,7 @@ static int mmc_blk_issue_rq(struct mmc_queue *mq, struct request *req)
 
 	if (req && !mq->mqrq_prev->req)
 		/* claim host only for the first request */
-		mmc_claim_host(card->host);
+		mmc_get_card(card);
 
 	ret = mmc_blk_part_switch(card, md);
 	if (ret) {
@@ -1939,7 +1967,7 @@ out:
 		 * In case sepecial request, there is no reentry to
 		 * the 'mmc_blk_issue_rq' with 'mqrq_prev->req'.
 		 */
-		mmc_release_host(card->host);
+		mmc_put_card(card);
 	return ret;
 }
 
@@ -2158,6 +2186,14 @@ static void mmc_blk_remove_req(struct mmc_blk_data *md)
 	struct mmc_card *card;
 
 	if (md) {
+		/*
+		 * Flush remaining requests and free queues. It
+		 * is freeing the queue that stops new requests
+		 * from being accepted.
+		 */
+		mmc_cleanup_queue(&md->queue);
+		if (md->flags & MMC_BLK_PACKED_CMD)
+			mmc_packed_clean(&md->queue);
 		card = md->queue.card;
 		if (md->disk->flags & GENHD_FL_UP) {
 			device_remove_file(disk_to_dev(md->disk), &md->force_ro);
@@ -2166,14 +2202,8 @@ static void mmc_blk_remove_req(struct mmc_blk_data *md)
 				device_remove_file(disk_to_dev(md->disk),
 					&md->power_ro_lock);
 
-			/* Stop new requests from getting into the queue */
 			del_gendisk(md->disk);
 		}
-
-		/* Then flush out any already in there */
-		mmc_cleanup_queue(&md->queue);
-		if (md->flags & MMC_BLK_PACKED_CMD)
-			mmc_packed_clean(&md->queue);
 		mmc_blk_put(md);
 	}
 }
@@ -2336,6 +2366,19 @@ static int mmc_blk_probe(struct mmc_card *card)
 		if (mmc_add_disk(part_md))
 			goto out;
 	}
+
+	pm_runtime_set_autosuspend_delay(&card->dev, 3000);
+	pm_runtime_use_autosuspend(&card->dev);
+
+	/*
+	 * Don't enable runtime PM for SD-combo cards here. Leave that
+	 * decision to be taken during the SDIO init sequence instead.
+	 */
+	if (card->type != MMC_TYPE_SD_COMBO) {
+		pm_runtime_set_active(&card->dev);
+		pm_runtime_enable(&card->dev);
+	}
+
 	return 0;
 
  out:
@@ -2349,20 +2392,24 @@ static void mmc_blk_remove(struct mmc_card *card)
 	struct mmc_blk_data *md = mmc_get_drvdata(card);
 
 	mmc_blk_remove_parts(card, md);
+	pm_runtime_get_sync(&card->dev);
 	mmc_claim_host(card->host);
 	mmc_blk_part_switch(card, md);
 	mmc_release_host(card->host);
+	if (card->type != MMC_TYPE_SD_COMBO)
+		pm_runtime_disable(&card->dev);
+	pm_runtime_put_noidle(&card->dev);
 	mmc_blk_remove_req(md);
 	mmc_set_drvdata(card, NULL);
 }
 
-#ifdef CONFIG_PM
-static int mmc_blk_suspend(struct mmc_card *card)
+static int _mmc_blk_suspend(struct mmc_card *card)
 {
 	struct mmc_blk_data *part_md;
 	struct mmc_blk_data *md = mmc_get_drvdata(card);
 
 	if (md) {
+		pm_runtime_get_sync(&card->dev);
 		mmc_queue_suspend(&md->queue);
 		list_for_each_entry(part_md, &md->part, part) {
 			mmc_queue_suspend(&part_md->queue);
@@ -2371,6 +2418,17 @@ static int mmc_blk_suspend(struct mmc_card *card)
 	return 0;
 }
 
+static void mmc_blk_shutdown(struct mmc_card *card)
+{
+	_mmc_blk_suspend(card);
+}
+
+#ifdef CONFIG_PM
+static int mmc_blk_suspend(struct mmc_card *card)
+{
+	return _mmc_blk_suspend(card);
+}
+
 static int mmc_blk_resume(struct mmc_card *card)
 {
 	struct mmc_blk_data *part_md;
@@ -2386,6 +2444,7 @@ static int mmc_blk_resume(struct mmc_card *card)
 		list_for_each_entry(part_md, &md->part, part) {
 			mmc_queue_resume(&part_md->queue);
 		}
+		pm_runtime_put(&card->dev);
 	}
 	return 0;
 }
@@ -2402,6 +2461,7 @@ static struct mmc_driver mmc_driver = {
 	.remove		= mmc_blk_remove,
 	.suspend	= mmc_blk_suspend,
 	.resume		= mmc_blk_resume,
+	.shutdown	= mmc_blk_shutdown,
 };
 
 static int __init mmc_blk_init(void)