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Subject[PATCH V4 2/7] mmc: sdhci: Capture eMMC and SD card errors
Date
Add changes to capture eMMC and SD card errors.
This is useful for debug and testing.

Signed-off-by: Liangliang Lu <quic_luliang@quicinc.com>
Signed-off-by: Sayali Lokhande <quic_sayalil@quicinc.com>
Signed-off-by: Bao D. Nguyen <quic_nguyenb@quicinc.com>
Signed-off-by: Shaik Sajida Bhanu <quic_c_sbhanu@quicinc.com>
---
drivers/mmc/host/sdhci.c | 52 +++++++++++++++++++++++++++++++++++++-----------
1 file changed, 40 insertions(+), 12 deletions(-)

diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index 07c6da1..741fb06 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -3159,6 +3159,7 @@ static void sdhci_timeout_timer(struct timer_list *t)
spin_lock_irqsave(&host->lock, flags);

if (host->cmd && !sdhci_data_line_cmd(host->cmd)) {
+ mmc_debugfs_err_stats_inc(host->mmc, MMC_ERR_REQ_TIMEOUT);
pr_err("%s: Timeout waiting for hardware cmd interrupt.\n",
mmc_hostname(host->mmc));
sdhci_dumpregs(host);
@@ -3181,6 +3182,7 @@ static void sdhci_timeout_data_timer(struct timer_list *t)

if (host->data || host->data_cmd ||
(host->cmd && sdhci_data_line_cmd(host->cmd))) {
+ mmc_debugfs_err_stats_inc(host->mmc, MMC_ERR_REQ_TIMEOUT);
pr_err("%s: Timeout waiting for hardware interrupt.\n",
mmc_hostname(host->mmc));
sdhci_dumpregs(host);
@@ -3240,11 +3242,15 @@ static void sdhci_cmd_irq(struct sdhci_host *host, u32 intmask, u32 *intmask_p)

if (intmask & (SDHCI_INT_TIMEOUT | SDHCI_INT_CRC |
SDHCI_INT_END_BIT | SDHCI_INT_INDEX)) {
- if (intmask & SDHCI_INT_TIMEOUT)
+ if (intmask & SDHCI_INT_TIMEOUT) {
host->cmd->error = -ETIMEDOUT;
- else
+ mmc_debugfs_err_stats_inc(host->mmc, MMC_ERR_CMD_TIMEOUT);
+ } else {
host->cmd->error = -EILSEQ;
-
+ if (host->cmd->opcode != MMC_SEND_TUNING_BLOCK ||
+ host->cmd->opcode != MMC_SEND_TUNING_BLOCK_HS200)
+ mmc_debugfs_err_stats_inc(host->mmc, MMC_ERR_CMD_CRC);
+ }
/* Treat data command CRC error the same as data CRC error */
if (host->cmd->data &&
(intmask & (SDHCI_INT_CRC | SDHCI_INT_TIMEOUT)) ==
@@ -3265,6 +3271,7 @@ static void sdhci_cmd_irq(struct sdhci_host *host, u32 intmask, u32 *intmask_p)
int err = (auto_cmd_status & SDHCI_AUTO_CMD_TIMEOUT) ?
-ETIMEDOUT :
-EILSEQ;
+ mmc_debugfs_err_stats_inc(host->mmc, MMC_ERR_AUTO_CMD);

if (sdhci_auto_cmd23(host, mrq)) {
mrq->sbc->error = err;
@@ -3342,6 +3349,7 @@ static void sdhci_data_irq(struct sdhci_host *host, u32 intmask)
if (intmask & SDHCI_INT_DATA_TIMEOUT) {
host->data_cmd = NULL;
data_cmd->error = -ETIMEDOUT;
+ mmc_debugfs_err_stats_inc(host->mmc, MMC_ERR_CMD_TIMEOUT);
__sdhci_finish_mrq(host, data_cmd->mrq);
return;
}
@@ -3375,18 +3383,25 @@ static void sdhci_data_irq(struct sdhci_host *host, u32 intmask)
return;
}

- if (intmask & SDHCI_INT_DATA_TIMEOUT)
+ if (intmask & SDHCI_INT_DATA_TIMEOUT) {
host->data->error = -ETIMEDOUT;
+ mmc_debugfs_err_stats_inc(host->mmc, MMC_ERR_DAT_TIMEOUT);
+ }
else if (intmask & SDHCI_INT_DATA_END_BIT)
host->data->error = -EILSEQ;
else if ((intmask & SDHCI_INT_DATA_CRC) &&
SDHCI_GET_CMD(sdhci_readw(host, SDHCI_COMMAND))
- != MMC_BUS_TEST_R)
+ != MMC_BUS_TEST_R) {
host->data->error = -EILSEQ;
+ if (host->cmd->opcode != MMC_SEND_TUNING_BLOCK ||
+ host->cmd->opcode != MMC_SEND_TUNING_BLOCK_HS200)
+ mmc_debugfs_err_stats_inc(host->mmc, MMC_ERR_DAT_CRC);
+ }
else if (intmask & SDHCI_INT_ADMA_ERROR) {
pr_err("%s: ADMA error: 0x%08x\n", mmc_hostname(host->mmc),
intmask);
sdhci_adma_show_error(host);
+ mmc_debugfs_err_stats_inc(host->mmc, MMC_ERR_ADMA);
host->data->error = -EIO;
if (host->ops->adma_workaround)
host->ops->adma_workaround(host, intmask);
@@ -3905,20 +3920,33 @@ bool sdhci_cqe_irq(struct sdhci_host *host, u32 intmask, int *cmd_error,
if (!host->cqe_on)
return false;

- if (intmask & (SDHCI_INT_INDEX | SDHCI_INT_END_BIT | SDHCI_INT_CRC))
+ if (intmask & (SDHCI_INT_INDEX | SDHCI_INT_END_BIT | SDHCI_INT_CRC)) {
*cmd_error = -EILSEQ;
- else if (intmask & SDHCI_INT_TIMEOUT)
+ if (intmask & SDHCI_INT_CRC) {
+ if (host->cmd->opcode != MMC_SEND_TUNING_BLOCK ||
+ host->cmd->opcode != MMC_SEND_TUNING_BLOCK_HS200)
+ mmc_debugfs_err_stats_inc(host->mmc, MMC_ERR_CMD_CRC);
+ }
+ } else if (intmask & SDHCI_INT_TIMEOUT) {
*cmd_error = -ETIMEDOUT;
- else
+ mmc_debugfs_err_stats_inc(host->mmc, MMC_ERR_CMD_TIMEOUT);
+ } else
*cmd_error = 0;

- if (intmask & (SDHCI_INT_DATA_END_BIT | SDHCI_INT_DATA_CRC))
+ if (intmask & (SDHCI_INT_DATA_END_BIT | SDHCI_INT_DATA_CRC)) {
*data_error = -EILSEQ;
- else if (intmask & SDHCI_INT_DATA_TIMEOUT)
+ if (intmask & SDHCI_INT_DATA_CRC) {
+ if (host->cmd->opcode != MMC_SEND_TUNING_BLOCK ||
+ host->cmd->opcode != MMC_SEND_TUNING_BLOCK_HS200)
+ mmc_debugfs_err_stats_inc(host->mmc, MMC_ERR_DAT_CRC);
+ }
+ } else if (intmask & SDHCI_INT_DATA_TIMEOUT) {
*data_error = -ETIMEDOUT;
- else if (intmask & SDHCI_INT_ADMA_ERROR)
+ mmc_debugfs_err_stats_inc(host->mmc, MMC_ERR_DAT_TIMEOUT);
+ } else if (intmask & SDHCI_INT_ADMA_ERROR) {
*data_error = -EIO;
- else
+ mmc_debugfs_err_stats_inc(host->mmc, MMC_ERR_ADMA);
+ } else
*data_error = 0;

/* Clear selected interrupts. */
--
QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member
of Code Aurora Forum, hosted by The Linux Foundation
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