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path: root/drivers/mmc/card/block.c
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Diffstat (limited to 'drivers/mmc/card/block.c')
-rw-r--r--drivers/mmc/card/block.c130
1 files changed, 95 insertions, 35 deletions
diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c
index dd27b0783d5..cd0b7f4a1ff 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)
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-22 12:53:14 +0000