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path: root/drivers/mmc/core
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Diffstat (limited to 'drivers/mmc/core')
-rw-r--r--drivers/mmc/core/bus.c3
-rw-r--r--drivers/mmc/core/core.c95
-rw-r--r--drivers/mmc/core/debugfs.c3
-rw-r--r--drivers/mmc/core/host.c8
-rw-r--r--drivers/mmc/core/mmc.c253
-rw-r--r--drivers/mmc/core/mmc_ops.c27
-rw-r--r--drivers/mmc/core/quirks.c2
-rw-r--r--drivers/mmc/core/sd.c19
8 files changed, 297 insertions, 113 deletions
diff --git a/drivers/mmc/core/bus.c b/drivers/mmc/core/bus.c
index 4bc48f104..c64266f5a 100644
--- a/drivers/mmc/core/bus.c
+++ b/drivers/mmc/core/bus.c
@@ -332,12 +332,13 @@ int mmc_add_card(struct mmc_card *card)
mmc_card_ddr52(card) ? "DDR " : "",
type);
} else {
- pr_info("%s: new %s%s%s%s%s card at address %04x\n",
+ pr_info("%s: new %s%s%s%s%s%s card at address %04x\n",
mmc_hostname(card->host),
mmc_card_uhs(card) ? "ultra high speed " :
(mmc_card_hs(card) ? "high speed " : ""),
mmc_card_hs400(card) ? "HS400 " :
(mmc_card_hs200(card) ? "HS200 " : ""),
+ mmc_card_hs400es(card) ? "Enhanced strobe " : "",
mmc_card_ddr52(card) ? "DDR " : "",
uhs_bus_speed_mode, type, card->rca);
}
diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
index 8b4dfd454..e55cde6d4 100644
--- a/drivers/mmc/core/core.c
+++ b/drivers/mmc/core/core.c
@@ -1127,6 +1127,15 @@ void mmc_set_initial_state(struct mmc_host *host)
host->ios.bus_width = MMC_BUS_WIDTH_1;
host->ios.timing = MMC_TIMING_LEGACY;
host->ios.drv_type = 0;
+ host->ios.enhanced_strobe = false;
+
+ /*
+ * Make sure we are in non-enhanced strobe mode before we
+ * actually enable it in ext_csd.
+ */
+ if ((host->caps2 & MMC_CAP2_HS400_ES) &&
+ host->ops->hs400_enhanced_strobe)
+ host->ops->hs400_enhanced_strobe(host, &host->ios);
mmc_set_ios(host);
}
@@ -1925,17 +1934,15 @@ void mmc_init_erase(struct mmc_card *card)
* to that size and alignment.
*
* For SD cards that define Allocation Unit size, limit erases to one
- * Allocation Unit at a time. For MMC cards that define High Capacity
- * Erase Size, whether it is switched on or not, limit to that size.
- * Otherwise just have a stab at a good value. For modern cards it
- * will end up being 4MiB. Note that if the value is too small, it
- * can end up taking longer to erase.
+ * Allocation Unit at a time.
+ * For MMC, have a stab at ai good value and for modern cards it will
+ * end up being 4MiB. Note that if the value is too small, it can end
+ * up taking longer to erase. Also note, erase_size is already set to
+ * High Capacity Erase Size if available when this function is called.
*/
if (mmc_card_sd(card) && card->ssr.au) {
card->pref_erase = card->ssr.au;
card->erase_shift = ffs(card->ssr.au) - 1;
- } else if (card->ext_csd.hc_erase_size) {
- card->pref_erase = card->ext_csd.hc_erase_size;
} else if (card->erase_size) {
sz = (card->csd.capacity << (card->csd.read_blkbits - 9)) >> 11;
if (sz < 128)
@@ -2060,7 +2067,8 @@ static int mmc_do_erase(struct mmc_card *card, unsigned int from,
unsigned int to, unsigned int arg)
{
struct mmc_command cmd = {0};
- unsigned int qty = 0;
+ unsigned int qty = 0, busy_timeout = 0;
+ bool use_r1b_resp = false;
unsigned long timeout;
int err;
@@ -2128,8 +2136,22 @@ static int mmc_do_erase(struct mmc_card *card, unsigned int from,
memset(&cmd, 0, sizeof(struct mmc_command));
cmd.opcode = MMC_ERASE;
cmd.arg = arg;
- cmd.flags = MMC_RSP_SPI_R1B | MMC_RSP_R1B | MMC_CMD_AC;
- cmd.busy_timeout = mmc_erase_timeout(card, arg, qty);
+ busy_timeout = mmc_erase_timeout(card, arg, qty);
+ /*
+ * If the host controller supports busy signalling and the timeout for
+ * the erase operation does not exceed the max_busy_timeout, we should
+ * use R1B response. Or we need to prevent the host from doing hw busy
+ * detection, which is done by converting to a R1 response instead.
+ */
+ if (card->host->max_busy_timeout &&
+ busy_timeout > card->host->max_busy_timeout) {
+ cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_AC;
+ } else {
+ cmd.flags = MMC_RSP_SPI_R1B | MMC_RSP_R1B | MMC_CMD_AC;
+ cmd.busy_timeout = busy_timeout;
+ use_r1b_resp = true;
+ }
+
err = mmc_wait_for_cmd(card->host, &cmd, 0);
if (err) {
pr_err("mmc_erase: erase error %d, status %#x\n",
@@ -2141,7 +2163,14 @@ static int mmc_do_erase(struct mmc_card *card, unsigned int from,
if (mmc_host_is_spi(card->host))
goto out;
- timeout = jiffies + msecs_to_jiffies(MMC_CORE_TIMEOUT_MS);
+ /*
+ * In case of when R1B + MMC_CAP_WAIT_WHILE_BUSY is used, the polling
+ * shall be avoided.
+ */
+ if ((card->host->caps & MMC_CAP_WAIT_WHILE_BUSY) && use_r1b_resp)
+ goto out;
+
+ timeout = jiffies + msecs_to_jiffies(busy_timeout);
do {
memset(&cmd, 0, sizeof(struct mmc_command));
cmd.opcode = MMC_SEND_STATUS;
@@ -2321,23 +2350,41 @@ static unsigned int mmc_do_calc_max_discard(struct mmc_card *card,
unsigned int arg)
{
struct mmc_host *host = card->host;
- unsigned int max_discard, x, y, qty = 0, max_qty, timeout;
+ unsigned int max_discard, x, y, qty = 0, max_qty, min_qty, timeout;
unsigned int last_timeout = 0;
- if (card->erase_shift)
+ if (card->erase_shift) {
max_qty = UINT_MAX >> card->erase_shift;
- else if (mmc_card_sd(card))
+ min_qty = card->pref_erase >> card->erase_shift;
+ } else if (mmc_card_sd(card)) {
max_qty = UINT_MAX;
- else
+ min_qty = card->pref_erase;
+ } else {
max_qty = UINT_MAX / card->erase_size;
+ min_qty = card->pref_erase / card->erase_size;
+ }
- /* Find the largest qty with an OK timeout */
+ /*
+ * We should not only use 'host->max_busy_timeout' as the limitation
+ * when deciding the max discard sectors. We should set a balance value
+ * to improve the erase speed, and it can not get too long timeout at
+ * the same time.
+ *
+ * Here we set 'card->pref_erase' as the minimal discard sectors no
+ * matter what size of 'host->max_busy_timeout', but if the
+ * 'host->max_busy_timeout' is large enough for more discard sectors,
+ * then we can continue to increase the max discard sectors until we
+ * get a balance value.
+ */
do {
y = 0;
for (x = 1; x && x <= max_qty && max_qty - x >= qty; x <<= 1) {
timeout = mmc_erase_timeout(card, arg, qty + x);
- if (timeout > host->max_busy_timeout)
+
+ if (qty + x > min_qty &&
+ timeout > host->max_busy_timeout)
break;
+
if (timeout < last_timeout)
break;
last_timeout = timeout;
@@ -2491,17 +2538,21 @@ static int mmc_rescan_try_freq(struct mmc_host *host, unsigned freq)
mmc_go_idle(host);
- mmc_send_if_cond(host, host->ocr_avail);
+ if (!(host->caps2 & MMC_CAP2_NO_SD))
+ mmc_send_if_cond(host, host->ocr_avail);
/* Order's important: probe SDIO, then SD, then MMC */
if (!(host->caps2 & MMC_CAP2_NO_SDIO))
if (!mmc_attach_sdio(host))
return 0;
- if (!mmc_attach_sd(host))
- return 0;
- if (!mmc_attach_mmc(host))
- return 0;
+ if (!(host->caps2 & MMC_CAP2_NO_SD))
+ if (!mmc_attach_sd(host))
+ return 0;
+
+ if (!(host->caps2 & MMC_CAP2_NO_MMC))
+ if (!mmc_attach_mmc(host))
+ return 0;
mmc_power_off(host);
return -EIO;
diff --git a/drivers/mmc/core/debugfs.c b/drivers/mmc/core/debugfs.c
index 9382a57a5..c8451ce55 100644
--- a/drivers/mmc/core/debugfs.c
+++ b/drivers/mmc/core/debugfs.c
@@ -148,7 +148,8 @@ static int mmc_ios_show(struct seq_file *s, void *data)
str = "mmc HS200";
break;
case MMC_TIMING_MMC_HS400:
- str = "mmc HS400";
+ str = mmc_card_hs400es(host->card) ?
+ "mmc HS400 enhanced strobe" : "mmc HS400";
break;
default:
str = "invalid";
diff --git a/drivers/mmc/core/host.c b/drivers/mmc/core/host.c
index 1be42fab1..98f25ffb4 100644
--- a/drivers/mmc/core/host.c
+++ b/drivers/mmc/core/host.c
@@ -313,6 +313,14 @@ int mmc_of_parse(struct mmc_host *host)
host->caps2 |= MMC_CAP2_HS400_1_8V | MMC_CAP2_HS200_1_8V_SDR;
if (of_property_read_bool(np, "mmc-hs400-1_2v"))
host->caps2 |= MMC_CAP2_HS400_1_2V | MMC_CAP2_HS200_1_2V_SDR;
+ if (of_property_read_bool(np, "mmc-hs400-enhanced-strobe"))
+ host->caps2 |= MMC_CAP2_HS400_ES;
+ if (of_property_read_bool(np, "no-sdio"))
+ host->caps2 |= MMC_CAP2_NO_SDIO;
+ if (of_property_read_bool(np, "no-sd"))
+ host->caps2 |= MMC_CAP2_NO_SD;
+ if (of_property_read_bool(np, "no-mmc"))
+ host->caps2 |= MMC_CAP2_NO_MMC;
host->dsr_req = !of_property_read_u32(np, "dsr", &host->dsr);
if (host->dsr_req && (host->dsr & ~0xffff)) {
diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c
index 5d438ad3e..f2d185cf8 100644
--- a/drivers/mmc/core/mmc.c
+++ b/drivers/mmc/core/mmc.c
@@ -45,6 +45,17 @@ static const unsigned int tacc_mant[] = {
35, 40, 45, 50, 55, 60, 70, 80,
};
+static const struct mmc_fixup mmc_ext_csd_fixups[] = {
+ /*
+ * Certain Hynix eMMC 4.41 cards might get broken when HPI feature
+ * is used so disable the HPI feature for such buggy cards.
+ */
+ MMC_FIXUP_EXT_CSD_REV(CID_NAME_ANY, CID_MANFID_HYNIX,
+ 0x014a, add_quirk, MMC_QUIRK_BROKEN_HPI, 5),
+
+ END_FIXUP
+};
+
#define UNSTUFF_BITS(resp,start,size) \
({ \
const int __size = size; \
@@ -235,6 +246,11 @@ static void mmc_select_card_type(struct mmc_card *card)
avail_type |= EXT_CSD_CARD_TYPE_HS400_1_2V;
}
+ if ((caps2 & MMC_CAP2_HS400_ES) &&
+ card->ext_csd.strobe_support &&
+ (avail_type & EXT_CSD_CARD_TYPE_HS400))
+ avail_type |= EXT_CSD_CARD_TYPE_HS400ES;
+
card->ext_csd.hs_max_dtr = hs_max_dtr;
card->ext_csd.hs200_max_dtr = hs200_max_dtr;
card->mmc_avail_type = avail_type;
@@ -370,6 +386,9 @@ static int mmc_decode_ext_csd(struct mmc_card *card, u8 *ext_csd)
*/
card->ext_csd.rev = ext_csd[EXT_CSD_REV];
+ /* fixup device after ext_csd revision field is updated */
+ mmc_fixup_device(card, mmc_ext_csd_fixups);
+
card->ext_csd.raw_sectors[0] = ext_csd[EXT_CSD_SEC_CNT + 0];
card->ext_csd.raw_sectors[1] = ext_csd[EXT_CSD_SEC_CNT + 1];
card->ext_csd.raw_sectors[2] = ext_csd[EXT_CSD_SEC_CNT + 2];
@@ -386,6 +405,7 @@ static int mmc_decode_ext_csd(struct mmc_card *card, u8 *ext_csd)
mmc_card_set_blockaddr(card);
}
+ card->ext_csd.strobe_support = ext_csd[EXT_CSD_STROBE_SUPPORT];
card->ext_csd.raw_card_type = ext_csd[EXT_CSD_CARD_TYPE];
mmc_select_card_type(card);
@@ -500,7 +520,8 @@ 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 (ext_csd[EXT_CSD_BKOPS_SUPPORT] & 0x1) {
+ if (!mmc_card_broken_hpi(card) &&
+ ext_csd[EXT_CSD_BKOPS_SUPPORT] & 0x1) {
card->ext_csd.bkops = 1;
card->ext_csd.man_bkops_en =
(ext_csd[EXT_CSD_BKOPS_EN] &
@@ -513,7 +534,8 @@ static int mmc_decode_ext_csd(struct mmc_card *card, u8 *ext_csd)
}
/* check whether the eMMC card supports HPI */
- if (!broken_hpi && (ext_csd[EXT_CSD_HPI_FEATURES] & 0x1)) {
+ if (!mmc_card_broken_hpi(card) &&
+ !broken_hpi && (ext_csd[EXT_CSD_HPI_FEATURES] & 0x1)) {
card->ext_csd.hpi = 1;
if (ext_csd[EXT_CSD_HPI_FEATURES] & 0x2)
card->ext_csd.hpi_cmd = MMC_STOP_TRANSMISSION;
@@ -727,6 +749,7 @@ MMC_DEV_ATTR(enhanced_area_offset, "%llu\n",
MMC_DEV_ATTR(enhanced_area_size, "%u\n", card->ext_csd.enhanced_area_size);
MMC_DEV_ATTR(raw_rpmb_size_mult, "%#x\n", card->ext_csd.raw_rpmb_size_mult);
MMC_DEV_ATTR(rel_sectors, "%#x\n", card->ext_csd.rel_sectors);
+MMC_DEV_ATTR(ocr, "%08x\n", card->ocr);
static ssize_t mmc_fwrev_show(struct device *dev,
struct device_attribute *attr,
@@ -744,6 +767,22 @@ static ssize_t mmc_fwrev_show(struct device *dev,
static DEVICE_ATTR(fwrev, S_IRUGO, mmc_fwrev_show, NULL);
+static ssize_t mmc_dsr_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct mmc_card *card = mmc_dev_to_card(dev);
+ struct mmc_host *host = card->host;
+
+ if (card->csd.dsr_imp && host->dsr_req)
+ return sprintf(buf, "0x%x\n", host->dsr);
+ else
+ /* return default DSR value */
+ return sprintf(buf, "0x%x\n", 0x404);
+}
+
+static DEVICE_ATTR(dsr, S_IRUGO, mmc_dsr_show, NULL);
+
static struct attribute *mmc_std_attrs[] = {
&dev_attr_cid.attr,
&dev_attr_csd.attr,
@@ -762,6 +801,8 @@ static struct attribute *mmc_std_attrs[] = {
&dev_attr_enhanced_area_size.attr,
&dev_attr_raw_rpmb_size_mult.attr,
&dev_attr_rel_sectors.attr,
+ &dev_attr_ocr.attr,
+ &dev_attr_dsr.attr,
NULL,
};
ATTRIBUTE_GROUPS(mmc_std);
@@ -959,6 +1000,19 @@ static int mmc_select_bus_width(struct mmc_card *card)
return err;
}
+/* Caller must hold re-tuning */
+static int mmc_switch_status(struct mmc_card *card)
+{
+ u32 status;
+ int err;
+
+ err = mmc_send_status(card, &status);
+ if (err)
+ return err;
+
+ return mmc_switch_status_error(card->host, status);
+}
+
/*
* Switch to the high-speed mode
*/
@@ -969,9 +1023,11 @@ static int mmc_select_hs(struct mmc_card *card)
err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_HS_TIMING, EXT_CSD_TIMING_HS,
card->ext_csd.generic_cmd6_time,
- true, true, true);
- if (!err)
+ true, false, true);
+ if (!err) {
mmc_set_timing(card->host, MMC_TIMING_MMC_HS);
+ err = mmc_switch_status(card);
+ }
return err;
}
@@ -1047,23 +1103,9 @@ static int mmc_select_hs_ddr(struct mmc_card *card)
return err;
}
-/* Caller must hold re-tuning */
-static int mmc_switch_status(struct mmc_card *card)
-{
- u32 status;
- int err;
-
- err = mmc_send_status(card, &status);
- if (err)
- return err;
-
- return mmc_switch_status_error(card->host, status);
-}
-
static int mmc_select_hs400(struct mmc_card *card)
{
struct mmc_host *host = card->host;
- bool send_status = true;
unsigned int max_dtr;
int err = 0;
u8 val;
@@ -1075,19 +1117,12 @@ static int mmc_select_hs400(struct mmc_card *card)
host->ios.bus_width == MMC_BUS_WIDTH_8))
return 0;
- if (host->caps & MMC_CAP_WAIT_WHILE_BUSY)
- send_status = false;
-
- /* Reduce frequency to HS frequency */
- max_dtr = card->ext_csd.hs_max_dtr;
- mmc_set_clock(host, max_dtr);
-
/* Switch card to HS mode */
val = EXT_CSD_TIMING_HS;
err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_HS_TIMING, val,
card->ext_csd.generic_cmd6_time,
- true, send_status, true);
+ true, false, true);
if (err) {
pr_err("%s: switch to high-speed from hs200 failed, err:%d\n",
mmc_hostname(host), err);
@@ -1097,11 +1132,13 @@ static int mmc_select_hs400(struct mmc_card *card)
/* Set host controller to HS timing */
mmc_set_timing(card->host, MMC_TIMING_MMC_HS);
- if (!send_status) {
- err = mmc_switch_status(card);
- if (err)
- goto out_err;
- }
+ /* Reduce frequency to HS frequency */
+ max_dtr = card->ext_csd.hs_max_dtr;
+ mmc_set_clock(host, max_dtr);
+
+ err = mmc_switch_status(card);
+ if (err)
+ goto out_err;
/* Switch card to DDR */
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
@@ -1120,7 +1157,7 @@ static int mmc_select_hs400(struct mmc_card *card)
err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_HS_TIMING, val,
card->ext_csd.generic_cmd6_time,
- true, send_status, true);
+ true, false, true);
if (err) {
pr_err("%s: switch to hs400 failed, err:%d\n",
mmc_hostname(host), err);
@@ -1131,11 +1168,9 @@ static int mmc_select_hs400(struct mmc_card *card)
mmc_set_timing(host, MMC_TIMING_MMC_HS400);
mmc_set_bus_speed(card);
- if (!send_status) {
- err = mmc_switch_status(card);
- if (err)
- goto out_err;
- }
+ err = mmc_switch_status(card);
+ if (err)
+ goto out_err;
return 0;
@@ -1153,14 +1188,10 @@ int mmc_hs200_to_hs400(struct mmc_card *card)
int mmc_hs400_to_hs200(struct mmc_card *card)
{
struct mmc_host *host = card->host;
- bool send_status = true;
unsigned int max_dtr;
int err;
u8 val;
- if (host->caps & MMC_CAP_WAIT_WHILE_BUSY)
- send_status = false;
-
/* Reduce frequency to HS */
max_dtr = card->ext_csd.hs_max_dtr;
mmc_set_clock(host, max_dtr);
@@ -1169,49 +1200,43 @@ int mmc_hs400_to_hs200(struct mmc_card *card)
val = EXT_CSD_TIMING_HS;
err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING,
val, card->ext_csd.generic_cmd6_time,
- true, send_status, true);
+ true, false, true);
if (err)
goto out_err;
mmc_set_timing(host, MMC_TIMING_MMC_DDR52);
- if (!send_status) {
- err = mmc_switch_status(card);
- if (err)
- goto out_err;
- }
+ err = mmc_switch_status(card);
+ if (err)
+ goto out_err;
/* Switch HS DDR to HS */
err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BUS_WIDTH,
EXT_CSD_BUS_WIDTH_8, card->ext_csd.generic_cmd6_time,
- true, send_status, true);
+ true, false, true);
if (err)
goto out_err;
mmc_set_timing(host, MMC_TIMING_MMC_HS);
- if (!send_status) {
- err = mmc_switch_status(card);
- if (err)
- goto out_err;
- }
+ err = mmc_switch_status(card);
+ if (err)
+ goto out_err;
/* Switch HS to HS200 */
val = EXT_CSD_TIMING_HS200 |
card->drive_strength << EXT_CSD_DRV_STR_SHIFT;
err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING,
- val, card->ext_csd.generic_cmd6_time, true,
- send_status, true);
+ val, card->ext_csd.generic_cmd6_time,
+ true, false, true);
if (err)
goto out_err;
mmc_set_timing(host, MMC_TIMING_MMC_HS200);
- if (!send_status) {
- err = mmc_switch_status(card);
- if (err)
- goto out_err;
- }
+ err = mmc_switch_status(card);
+ if (err)
+ goto out_err;
mmc_set_bus_speed(card);
@@ -1223,6 +1248,78 @@ out_err:
return err;
}
+static int mmc_select_hs400es(struct mmc_card *card)
+{
+ struct mmc_host *host = card->host;
+ int err = 0;
+ u8 val;
+
+ if (!(host->caps & MMC_CAP_8_BIT_DATA)) {
+ err = -ENOTSUPP;
+ goto out_err;
+ }
+
+ err = mmc_select_bus_width(card);
+ if (err < 0)
+ goto out_err;
+
+ /* Switch card to HS mode */
+ err = mmc_select_hs(card);
+ if (err) {
+ pr_err("%s: switch to high-speed failed, err:%d\n",
+ mmc_hostname(host), err);
+ goto out_err;
+ }
+
+ err = mmc_switch_status(card);
+ if (err)
+ goto out_err;
+
+ /* Switch card to DDR with strobe bit */
+ val = EXT_CSD_DDR_BUS_WIDTH_8 | EXT_CSD_BUS_WIDTH_STROBE;
+ err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
+ EXT_CSD_BUS_WIDTH,
+ val,
+ card->ext_csd.generic_cmd6_time);
+ if (err) {
+ pr_err("%s: switch to bus width for hs400es failed, err:%d\n",
+ mmc_hostname(host), err);
+ goto out_err;
+ }
+
+ /* Switch card to HS400 */
+ val = EXT_CSD_TIMING_HS400 |
+ card->drive_strength << EXT_CSD_DRV_STR_SHIFT;
+ err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
+ EXT_CSD_HS_TIMING, val,
+ card->ext_csd.generic_cmd6_time,
+ true, false, true);
+ if (err) {
+ pr_err("%s: switch to hs400es failed, err:%d\n",
+ mmc_hostname(host), err);
+ goto out_err;
+ }
+
+ /* Set host controller to HS400 timing and frequency */
+ mmc_set_timing(host, MMC_TIMING_MMC_HS400);
+
+ /* Controller enable enhanced strobe function */
+ host->ios.enhanced_strobe = true;
+ if (host->ops->hs400_enhanced_strobe)
+ host->ops->hs400_enhanced_strobe(host, &host->ios);
+
+ err = mmc_switch_status(card);
+ if (err)
+ goto out_err;
+
+ return 0;
+
+out_err:
+ pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host),
+ __func__, err);
+ return err;
+}
+
static void mmc_select_driver_type(struct mmc_card *card)
{
int card_drv_type, drive_strength, drv_type;
@@ -1250,7 +1347,6 @@ static void mmc_select_driver_type(struct mmc_card *card)
static int mmc_select_hs200(struct mmc_card *card)
{
struct mmc_host *host = card->host;
- bool send_status = true;
unsigned int old_timing, old_signal_voltage;
int err = -EINVAL;
u8 val;
@@ -1268,34 +1364,30 @@ static int mmc_select_hs200(struct mmc_card *card)
mmc_select_driver_type(card);
- if (host->caps & MMC_CAP_WAIT_WHILE_BUSY)
- send_status = false;
-
/*
* Set the bus width(4 or 8) with host's support and
* switch to HS200 mode if bus width is set successfully.
*/
err = mmc_select_bus_width(card);
- if (err >= 0) {
+ if (err > 0) {
val = EXT_CSD_TIMING_HS200 |
card->drive_strength << EXT_CSD_DRV_STR_SHIFT;
err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_HS_TIMING, val,
card->ext_csd.generic_cmd6_time,
- true, send_status, true);
+ true, false, true);
if (err)
goto err;
old_timing = host->ios.timing;
mmc_set_timing(host, MMC_TIMING_MMC_HS200);
- if (!send_status) {
- err = mmc_switch_status(card);
- /*
- * mmc_select_timing() assumes timing has not changed if
- * it is a switch error.
- */
- if (err == -EBADMSG)
- mmc_set_timing(host, old_timing);
- }
+
+ err = mmc_switch_status(card);
+ /*
+ * mmc_select_timing() assumes timing has not changed if
+ * it is a switch error.
+ */
+ if (err == -EBADMSG)
+ mmc_set_timing(host, old_timing);
}
err:
if (err) {
@@ -1310,7 +1402,7 @@ err:
}
/*
- * Activate High Speed or HS200 mode if supported.
+ * Activate High Speed, HS200 or HS400ES mode if supported.
*/
static int mmc_select_timing(struct mmc_card *card)
{
@@ -1319,7 +1411,9 @@ static int mmc_select_timing(struct mmc_card *card)
if (!mmc_can_ext_csd(card))
goto bus_speed;
- if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200)
+ if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400ES)
+ err = mmc_select_hs400es(card);
+ else if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200)
err = mmc_select_hs200(card);
else if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS)
err = mmc_select_hs(card);
@@ -1583,7 +1677,7 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
} else if (mmc_card_hs(card)) {
/* Select the desired bus width optionally */
err = mmc_select_bus_width(card);
- if (err >= 0) {
+ if (err > 0) {
err = mmc_select_hs_ddr(card);
if (err)
goto free_card;
@@ -1616,7 +1710,8 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
* If cache size is higher than 0, this indicates
* the existence of cache and it can be turned on.
*/
- if (card->ext_csd.cache_size > 0) {
+ if (!mmc_card_broken_hpi(card) &&
+ card->ext_csd.cache_size > 0) {
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_CACHE_CTRL, 1,
card->ext_csd.generic_cmd6_time);
diff --git a/drivers/mmc/core/mmc_ops.c b/drivers/mmc/core/mmc_ops.c
index 62355bda6..ad6e9798e 100644
--- a/drivers/mmc/core/mmc_ops.c
+++ b/drivers/mmc/core/mmc_ops.c
@@ -480,6 +480,7 @@ int __mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value,
u32 status = 0;
bool use_r1b_resp = use_busy_signal;
bool expired = false;
+ bool busy = false;
mmc_retune_hold(host);
@@ -533,21 +534,26 @@ int __mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value,
timeout_ms = MMC_OPS_TIMEOUT_MS;
/* Must check status to be sure of no errors. */
- timeout = jiffies + msecs_to_jiffies(timeout_ms);
+ timeout = jiffies + msecs_to_jiffies(timeout_ms) + 1;
do {
+ /*
+ * Due to the possibility of being preempted after
+ * sending the status command, check the expiration
+ * time first.
+ */
+ expired = time_after(jiffies, timeout);
if (send_status) {
- /*
- * Due to the possibility of being preempted after
- * sending the status command, check the expiration
- * time first.
- */
- expired = time_after(jiffies, timeout);
err = __mmc_send_status(card, &status, ignore_crc);
if (err)
goto out;
}
if ((host->caps & MMC_CAP_WAIT_WHILE_BUSY) && use_r1b_resp)
break;
+ if (host->ops->card_busy) {
+ if (!host->ops->card_busy(host))
+ break;
+ busy = true;
+ }
if (mmc_host_is_spi(host))
break;
@@ -556,19 +562,20 @@ int __mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value,
* does'nt support MMC_CAP_WAIT_WHILE_BUSY, then we can only
* rely on waiting for the stated timeout to be sufficient.
*/
- if (!send_status) {
+ if (!send_status && !host->ops->card_busy) {
mmc_delay(timeout_ms);
goto out;
}
/* Timeout if the device never leaves the program state. */
- if (expired && R1_CURRENT_STATE(status) == R1_STATE_PRG) {
+ if (expired &&
+ (R1_CURRENT_STATE(status) == R1_STATE_PRG || busy)) {
pr_err("%s: Card stuck in programming state! %s\n",
mmc_hostname(host), __func__);
err = -ETIMEDOUT;
goto out;
}
- } while (R1_CURRENT_STATE(status) == R1_STATE_PRG);
+ } while (R1_CURRENT_STATE(status) == R1_STATE_PRG || busy);
err = mmc_switch_status_error(host, status);
out:
diff --git a/drivers/mmc/core/quirks.c b/drivers/mmc/core/quirks.c
index fad660b95..ca9cade31 100644
--- a/drivers/mmc/core/quirks.c
+++ b/drivers/mmc/core/quirks.c
@@ -72,6 +72,8 @@ void mmc_fixup_device(struct mmc_card *card, const struct mmc_fixup *table)
f->cis_vendor == (u16) SDIO_ANY_ID) &&
(f->cis_device == card->cis.device ||
f->cis_device == (u16) SDIO_ANY_ID) &&
+ (f->ext_csd_rev == EXT_CSD_REV_ANY ||
+ f->ext_csd_rev == card->ext_csd.rev) &&
rev >= f->rev_start && rev <= f->rev_end) {
dev_dbg(&card->dev, "calling %pf\n", f->vendor_fixup);
f->vendor_fixup(card, f->data);
diff --git a/drivers/mmc/core/sd.c b/drivers/mmc/core/sd.c
index b95bd24d9..012393624 100644
--- a/drivers/mmc/core/sd.c
+++ b/drivers/mmc/core/sd.c
@@ -675,8 +675,25 @@ MMC_DEV_ATTR(manfid, "0x%06x\n", card->cid.manfid);
MMC_DEV_ATTR(name, "%s\n", card->cid.prod_name);
MMC_DEV_ATTR(oemid, "0x%04x\n", card->cid.oemid);
MMC_DEV_ATTR(serial, "0x%08x\n", card->cid.serial);
+MMC_DEV_ATTR(ocr, "%08x\n", card->ocr);
+static ssize_t mmc_dsr_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct mmc_card *card = mmc_dev_to_card(dev);
+ struct mmc_host *host = card->host;
+
+ if (card->csd.dsr_imp && host->dsr_req)
+ return sprintf(buf, "0x%x\n", host->dsr);
+ else
+ /* return default DSR value */
+ return sprintf(buf, "0x%x\n", 0x404);
+}
+
+static DEVICE_ATTR(dsr, S_IRUGO, mmc_dsr_show, NULL);
+
static struct attribute *sd_std_attrs[] = {
&dev_attr_cid.attr,
&dev_attr_csd.attr,
@@ -690,6 +707,8 @@ static struct attribute *sd_std_attrs[] = {
&dev_attr_name.attr,
&dev_attr_oemid.attr,
&dev_attr_serial.attr,
+ &dev_attr_ocr.attr,
+ &dev_attr_dsr.attr,
NULL,
};
ATTRIBUTE_GROUPS(sd_std);
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-01 16:21:57 +0000