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Diffstat (limited to 'drivers/mmc/core')
-rw-r--r--drivers/mmc/core/block.c25
-rw-r--r--drivers/mmc/core/core.c6
-rw-r--r--drivers/mmc/core/mmc.c24
-rw-r--r--drivers/mmc/core/pwrseq_emmc.c38
-rw-r--r--drivers/mmc/core/queue.c1
-rw-r--r--drivers/mmc/core/sd.c8
6 files changed, 66 insertions, 36 deletions
diff --git a/drivers/mmc/core/block.c b/drivers/mmc/core/block.c
index e201ccb3fda4..eee004fb3c3e 100644
--- a/drivers/mmc/core/block.c
+++ b/drivers/mmc/core/block.c
@@ -472,7 +472,7 @@ out:
static int __mmc_blk_ioctl_cmd(struct mmc_card *card, struct mmc_blk_data *md,
struct mmc_blk_ioc_data *idata)
{
- struct mmc_command cmd = {};
+ struct mmc_command cmd = {}, sbc = {};
struct mmc_data data = {};
struct mmc_request mrq = {};
struct scatterlist sg;
@@ -550,10 +550,15 @@ static int __mmc_blk_ioctl_cmd(struct mmc_card *card, struct mmc_blk_data *md,
}
if (idata->rpmb) {
- err = mmc_set_blockcount(card, data.blocks,
- idata->ic.write_flag & (1 << 31));
- if (err)
- return err;
+ sbc.opcode = MMC_SET_BLOCK_COUNT;
+ /*
+ * We don't do any blockcount validation because the max size
+ * may be increased by a future standard. We just copy the
+ * 'Reliable Write' bit here.
+ */
+ sbc.arg = data.blocks | (idata->ic.write_flag & BIT(31));
+ sbc.flags = MMC_RSP_R1 | MMC_CMD_AC;
+ mrq.sbc = &sbc;
}
if ((MMC_EXTRACT_INDEX_FROM_ARG(cmd.arg) == EXT_CSD_SANITIZE_START) &&
@@ -2109,7 +2114,7 @@ static void mmc_blk_mq_req_done(struct mmc_request *mrq)
if (waiting)
wake_up(&mq->wait);
else
- kblockd_schedule_work(&mq->complete_work);
+ queue_work(mq->card->complete_wq, &mq->complete_work);
return;
}
@@ -2923,6 +2928,13 @@ static int mmc_blk_probe(struct mmc_card *card)
mmc_fixup_device(card, mmc_blk_fixups);
+ card->complete_wq = alloc_workqueue("mmc_complete",
+ WQ_MEM_RECLAIM | WQ_HIGHPRI, 0);
+ if (unlikely(!card->complete_wq)) {
+ pr_err("Failed to create mmc completion workqueue");
+ return -ENOMEM;
+ }
+
md = mmc_blk_alloc(card);
if (IS_ERR(md))
return PTR_ERR(md);
@@ -2986,6 +2998,7 @@ static void mmc_blk_remove(struct mmc_card *card)
pm_runtime_put_noidle(&card->dev);
mmc_blk_remove_req(md);
dev_set_drvdata(&card->dev, NULL);
+ destroy_workqueue(card->complete_wq);
}
static int _mmc_blk_suspend(struct mmc_card *card)
diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
index 50a5c340307b..6600b3466dfb 100644
--- a/drivers/mmc/core/core.c
+++ b/drivers/mmc/core/core.c
@@ -95,7 +95,7 @@ static void mmc_should_fail_request(struct mmc_host *host,
if (!data)
return;
- if (cmd->error || data->error ||
+ if ((cmd && cmd->error) || data->error ||
!should_fail(&host->fail_mmc_request, data->blksz * data->blocks))
return;
@@ -2378,9 +2378,9 @@ unsigned int mmc_calc_max_discard(struct mmc_card *card)
return card->pref_erase;
max_discard = mmc_do_calc_max_discard(card, MMC_ERASE_ARG);
- if (max_discard && mmc_can_trim(card)) {
+ if (mmc_can_trim(card)) {
max_trim = mmc_do_calc_max_discard(card, MMC_TRIM_ARG);
- if (max_trim < max_discard)
+ if (max_trim < max_discard || max_discard == 0)
max_discard = max_trim;
} else if (max_discard < card->erase_size) {
max_discard = 0;
diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c
index bc1bd2c25613..55997cf84b39 100644
--- a/drivers/mmc/core/mmc.c
+++ b/drivers/mmc/core/mmc.c
@@ -30,6 +30,7 @@
#include "pwrseq.h"
#define DEFAULT_CMD6_TIMEOUT_MS 500
+#define MIN_CACHE_EN_TIMEOUT_MS 1600
static const unsigned int tran_exp[] = {
10000, 100000, 1000000, 10000000,
@@ -526,8 +527,7 @@ static int mmc_decode_ext_csd(struct mmc_card *card, u8 *ext_csd)
card->cid.year += 16;
/* check whether the eMMC card supports BKOPS */
- if (!mmc_card_broken_hpi(card) &&
- ext_csd[EXT_CSD_BKOPS_SUPPORT] & 0x1) {
+ if (ext_csd[EXT_CSD_BKOPS_SUPPORT] & 0x1) {
card->ext_csd.bkops = 1;
card->ext_csd.man_bkops_en =
(ext_csd[EXT_CSD_BKOPS_EN] &
@@ -1782,20 +1782,26 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
if (err) {
pr_warn("%s: Enabling HPI failed\n",
mmc_hostname(card->host));
+ card->ext_csd.hpi_en = 0;
err = 0;
- } else
+ } else {
card->ext_csd.hpi_en = 1;
+ }
}
/*
- * If cache size is higher than 0, this indicates
- * the existence of cache and it can be turned on.
+ * If cache size is higher than 0, this indicates the existence of cache
+ * and it can be turned on. Note that some eMMCs from Micron has been
+ * reported to need ~800 ms timeout, while enabling the cache after
+ * sudden power failure tests. Let's extend the timeout to a minimum of
+ * DEFAULT_CACHE_EN_TIMEOUT_MS and do it for all cards.
*/
- if (!mmc_card_broken_hpi(card) &&
- card->ext_csd.cache_size > 0) {
+ if (card->ext_csd.cache_size > 0) {
+ unsigned int timeout_ms = MIN_CACHE_EN_TIMEOUT_MS;
+
+ timeout_ms = max(card->ext_csd.generic_cmd6_time, timeout_ms);
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
- EXT_CSD_CACHE_CTRL, 1,
- card->ext_csd.generic_cmd6_time);
+ EXT_CSD_CACHE_CTRL, 1, timeout_ms);
if (err && err != -EBADMSG)
goto free_card;
diff --git a/drivers/mmc/core/pwrseq_emmc.c b/drivers/mmc/core/pwrseq_emmc.c
index efb8a7965dd4..154f4204d58c 100644
--- a/drivers/mmc/core/pwrseq_emmc.c
+++ b/drivers/mmc/core/pwrseq_emmc.c
@@ -30,19 +30,14 @@ struct mmc_pwrseq_emmc {
#define to_pwrseq_emmc(p) container_of(p, struct mmc_pwrseq_emmc, pwrseq)
-static void __mmc_pwrseq_emmc_reset(struct mmc_pwrseq_emmc *pwrseq)
-{
- gpiod_set_value(pwrseq->reset_gpio, 1);
- udelay(1);
- gpiod_set_value(pwrseq->reset_gpio, 0);
- udelay(200);
-}
-
static void mmc_pwrseq_emmc_reset(struct mmc_host *host)
{
struct mmc_pwrseq_emmc *pwrseq = to_pwrseq_emmc(host->pwrseq);
- __mmc_pwrseq_emmc_reset(pwrseq);
+ gpiod_set_value_cansleep(pwrseq->reset_gpio, 1);
+ udelay(1);
+ gpiod_set_value_cansleep(pwrseq->reset_gpio, 0);
+ udelay(200);
}
static int mmc_pwrseq_emmc_reset_nb(struct notifier_block *this,
@@ -50,8 +45,11 @@ static int mmc_pwrseq_emmc_reset_nb(struct notifier_block *this,
{
struct mmc_pwrseq_emmc *pwrseq = container_of(this,
struct mmc_pwrseq_emmc, reset_nb);
+ gpiod_set_value(pwrseq->reset_gpio, 1);
+ udelay(1);
+ gpiod_set_value(pwrseq->reset_gpio, 0);
+ udelay(200);
- __mmc_pwrseq_emmc_reset(pwrseq);
return NOTIFY_DONE;
}
@@ -72,14 +70,18 @@ static int mmc_pwrseq_emmc_probe(struct platform_device *pdev)
if (IS_ERR(pwrseq->reset_gpio))
return PTR_ERR(pwrseq->reset_gpio);
- /*
- * register reset handler to ensure emmc reset also from
- * emergency_reboot(), priority 255 is the highest priority
- * so it will be executed before any system reboot handler.
- */
- pwrseq->reset_nb.notifier_call = mmc_pwrseq_emmc_reset_nb;
- pwrseq->reset_nb.priority = 255;
- register_restart_handler(&pwrseq->reset_nb);
+ if (!gpiod_cansleep(pwrseq->reset_gpio)) {
+ /*
+ * register reset handler to ensure emmc reset also from
+ * emergency_reboot(), priority 255 is the highest priority
+ * so it will be executed before any system reboot handler.
+ */
+ pwrseq->reset_nb.notifier_call = mmc_pwrseq_emmc_reset_nb;
+ pwrseq->reset_nb.priority = 255;
+ register_restart_handler(&pwrseq->reset_nb);
+ } else {
+ dev_notice(dev, "EMMC reset pin tied to a sleepy GPIO driver; reset on emergency-reboot disabled\n");
+ }
pwrseq->pwrseq.ops = &mmc_pwrseq_emmc_ops;
pwrseq->pwrseq.dev = dev;
diff --git a/drivers/mmc/core/queue.c b/drivers/mmc/core/queue.c
index 6edffeed9953..18aae28845ec 100644
--- a/drivers/mmc/core/queue.c
+++ b/drivers/mmc/core/queue.c
@@ -494,6 +494,7 @@ void mmc_cleanup_queue(struct mmc_queue *mq)
blk_mq_unquiesce_queue(q);
blk_cleanup_queue(q);
+ blk_mq_free_tag_set(&mq->tag_set);
/*
* A request can be completed before the next request, potentially
diff --git a/drivers/mmc/core/sd.c b/drivers/mmc/core/sd.c
index d0d9f90e7cdf..cfb8ee24eaba 100644
--- a/drivers/mmc/core/sd.c
+++ b/drivers/mmc/core/sd.c
@@ -216,6 +216,14 @@ static int mmc_decode_scr(struct mmc_card *card)
if (scr->sda_spec3)
scr->cmds = UNSTUFF_BITS(resp, 32, 2);
+
+ /* SD Spec says: any SD Card shall set at least bits 0 and 2 */
+ if (!(scr->bus_widths & SD_SCR_BUS_WIDTH_1) ||
+ !(scr->bus_widths & SD_SCR_BUS_WIDTH_4)) {
+ pr_err("%s: invalid bus width\n", mmc_hostname(card->host));
+ return -EINVAL;
+ }
+
return 0;
}
generated by cgit v1.2.3 (git 2.0.4) at 2024-07-01 14:57:17 +0000