Add changes to capture eMMC and SD card errors.
This is useful for debug and testing.
Signed-off-by: Liangliang Lu <[email protected]>
Signed-off-by: Sayali Lokhande <[email protected]>
Signed-off-by: Bao D. Nguyen <[email protected]>
Signed-off-by: Shaik Sajida Bhanu <[email protected]>
---
drivers/mmc/host/sdhci.c | 59 ++++++++++++++++++++++++++++++++++++------------
drivers/mmc/host/sdhci.h | 3 +++
include/linux/mmc/mmc.h | 6 +++++
3 files changed, 53 insertions(+), 15 deletions(-)
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index 7728f26..bd4372c 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -224,6 +224,7 @@ void sdhci_reset(struct sdhci_host *host, u8 mask)
if (timedout) {
pr_err("%s: Reset 0x%x never completed.\n",
mmc_hostname(host->mmc), (int)mask);
+ sdhci_err_stats_inc(host, CTRL_TIMEOUT);
sdhci_dumpregs(host);
return;
}
@@ -1719,6 +1720,7 @@ static bool sdhci_send_command_retry(struct sdhci_host *host,
if (!timeout--) {
pr_err("%s: Controller never released inhibit bit(s).\n",
mmc_hostname(host->mmc));
+ sdhci_err_stats_inc(host, CTRL_TIMEOUT);
sdhci_dumpregs(host);
cmd->error = -EIO;
return false;
@@ -1968,6 +1970,7 @@ void sdhci_enable_clk(struct sdhci_host *host, u16 clk)
if (timedout) {
pr_err("%s: Internal clock never stabilised.\n",
mmc_hostname(host->mmc));
+ sdhci_err_stats_inc(host, CTRL_TIMEOUT);
sdhci_dumpregs(host);
return;
}
@@ -1990,6 +1993,7 @@ void sdhci_enable_clk(struct sdhci_host *host, u16 clk)
if (timedout) {
pr_err("%s: PLL clock never stabilised.\n",
mmc_hostname(host->mmc));
+ sdhci_err_stats_inc(host, CTRL_TIMEOUT);
sdhci_dumpregs(host);
return;
}
@@ -3145,6 +3149,7 @@ static void sdhci_timeout_timer(struct timer_list *t)
if (host->cmd && !sdhci_data_line_cmd(host->cmd)) {
pr_err("%s: Timeout waiting for hardware cmd interrupt.\n",
mmc_hostname(host->mmc));
+ sdhci_err_stats_inc(host, REQ_TIMEOUT);
sdhci_dumpregs(host);
host->cmd->error = -ETIMEDOUT;
@@ -3167,6 +3172,7 @@ static void sdhci_timeout_data_timer(struct timer_list *t)
(host->cmd && sdhci_data_line_cmd(host->cmd))) {
pr_err("%s: Timeout waiting for hardware interrupt.\n",
mmc_hostname(host->mmc));
+ sdhci_err_stats_inc(host, REQ_TIMEOUT);
sdhci_dumpregs(host);
if (host->data) {
@@ -3218,17 +3224,21 @@ static void sdhci_cmd_irq(struct sdhci_host *host, u32 intmask, u32 *intmask_p)
return;
pr_err("%s: Got command interrupt 0x%08x even though no command operation was in progress.\n",
mmc_hostname(host->mmc), (unsigned)intmask);
+ sdhci_err_stats_inc(host, UNEXPECTED_IRQ);
sdhci_dumpregs(host);
return;
}
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
+ sdhci_err_stats_inc(host, CMD_TIMEOUT);
+ } else {
host->cmd->error = -EILSEQ;
-
+ if (!mmc_op_tuning(host->cmd->opcode))
+ sdhci_err_stats_inc(host, CMD_CRC);
+ }
/* Treat data command CRC error the same as data CRC error */
if (host->cmd->data &&
(intmask & (SDHCI_INT_CRC | SDHCI_INT_TIMEOUT)) ==
@@ -3249,6 +3259,8 @@ 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;
+ sdhci_err_stats_inc(host, AUTO_CMD);
+
if (mrq->sbc && (host->flags & SDHCI_AUTO_CMD23)) {
mrq->sbc->error = err;
@@ -3326,6 +3338,7 @@ 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;
+ sdhci_err_stats_inc(host, CMD_TIMEOUT);
__sdhci_finish_mrq(host, data_cmd->mrq);
return;
}
@@ -3354,23 +3367,30 @@ static void sdhci_data_irq(struct sdhci_host *host, u32 intmask)
pr_err("%s: Got data interrupt 0x%08x even though no data operation was in progress.\n",
mmc_hostname(host->mmc), (unsigned)intmask);
+ sdhci_err_stats_inc(host, UNEXPECTED_IRQ);
sdhci_dumpregs(host);
return;
}
- if (intmask & SDHCI_INT_DATA_TIMEOUT)
+ if (intmask & SDHCI_INT_DATA_TIMEOUT) {
host->data->error = -ETIMEDOUT;
- else if (intmask & SDHCI_INT_DATA_END_BIT)
+ sdhci_err_stats_inc(host, DAT_TIMEOUT);
+ } else if (intmask & SDHCI_INT_DATA_END_BIT) {
host->data->error = -EILSEQ;
- else if ((intmask & SDHCI_INT_DATA_CRC) &&
+ if (!mmc_op_tuning(SDHCI_GET_CMD(sdhci_readw(host, SDHCI_COMMAND))))
+ sdhci_err_stats_inc(host, DAT_CRC);
+ } 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;
- else if (intmask & SDHCI_INT_ADMA_ERROR) {
+ if (!mmc_op_tuning(SDHCI_GET_CMD(sdhci_readw(host, SDHCI_COMMAND))))
+ sdhci_err_stats_inc(host, 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);
+ sdhci_err_stats_inc(host, ADMA);
host->data->error = -EIO;
if (host->ops->adma_workaround)
host->ops->adma_workaround(host, intmask);
@@ -3568,6 +3588,7 @@ static irqreturn_t sdhci_irq(int irq, void *dev_id)
if (unexpected) {
pr_err("%s: Unexpected interrupt 0x%08x.\n",
mmc_hostname(host->mmc), unexpected);
+ sdhci_err_stats_inc(host, UNEXPECTED_IRQ);
sdhci_dumpregs(host);
}
@@ -3889,20 +3910,27 @@ 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 (!mmc_op_tuning(host->cmd->opcode))
+ sdhci_err_stats_inc(host, CMD_CRC);
+ } else if (intmask & SDHCI_INT_TIMEOUT) {
*cmd_error = -ETIMEDOUT;
- else
+ sdhci_err_stats_inc(host, 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 (!mmc_op_tuning(host->cmd->opcode))
+ sdhci_err_stats_inc(host, DAT_CRC);
+ } else if (intmask & SDHCI_INT_DATA_TIMEOUT) {
*data_error = -ETIMEDOUT;
- else if (intmask & SDHCI_INT_ADMA_ERROR)
+ sdhci_err_stats_inc(host, DAT_TIMEOUT);
+ } else if (intmask & SDHCI_INT_ADMA_ERROR) {
*data_error = -EIO;
- else
+ sdhci_err_stats_inc(host, ADMA);
+ } else
*data_error = 0;
/* Clear selected interrupts. */
@@ -3918,6 +3946,7 @@ bool sdhci_cqe_irq(struct sdhci_host *host, u32 intmask, int *cmd_error,
sdhci_writel(host, intmask, SDHCI_INT_STATUS);
pr_err("%s: CQE: Unexpected interrupt 0x%08x.\n",
mmc_hostname(host->mmc), intmask);
+ sdhci_err_stats_inc(host, UNEXPECTED_IRQ);
sdhci_dumpregs(host);
}
diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h
index 6c689be..2c02ded 100644
--- a/drivers/mmc/host/sdhci.h
+++ b/drivers/mmc/host/sdhci.h
@@ -356,6 +356,9 @@ struct sdhci_adma2_64_desc {
*/
#define MMC_CMD_TRANSFER_TIME (10 * NSEC_PER_MSEC) /* max 10 ms */
+#define sdhci_err_stats_inc(host, err_name) \
+ mmc_debugfs_err_stats_inc((host)->mmc, MMC_ERR_##err_name)
+
enum sdhci_cookie {
COOKIE_UNMAPPED,
COOKIE_PRE_MAPPED, /* mapped by sdhci_pre_req() */
diff --git a/include/linux/mmc/mmc.h b/include/linux/mmc/mmc.h
index d9a65c6..9c50bc4 100644
--- a/include/linux/mmc/mmc.h
+++ b/include/linux/mmc/mmc.h
@@ -99,6 +99,12 @@ static inline bool mmc_op_multi(u32 opcode)
opcode == MMC_READ_MULTIPLE_BLOCK;
}
+static inline bool mmc_op_tuning(u32 opcode)
+{
+ return opcode == MMC_SEND_TUNING_BLOCK ||
+ opcode == MMC_SEND_TUNING_BLOCK_HS200;
+}
+
/*
* MMC_SWITCH argument format:
*
--
QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member
of Code Aurora Forum, hosted by The Linux Foundation
On 18/05/22 10:02, Shaik Sajida Bhanu wrote:
> Add changes to capture eMMC and SD card errors.
> This is useful for debug and testing.
>
> Signed-off-by: Liangliang Lu <[email protected]>
> Signed-off-by: Sayali Lokhande <[email protected]>
> Signed-off-by: Bao D. Nguyen <[email protected]>
> Signed-off-by: Shaik Sajida Bhanu <[email protected]>
Misplaced blank line (see below) and seems to need to be
re-based on Ulf's next branch:
git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc.git next
Otherwise:
Acked-by: Adrian Hunter <[email protected]>
> ---
> drivers/mmc/host/sdhci.c | 59 ++++++++++++++++++++++++++++++++++++------------
> drivers/mmc/host/sdhci.h | 3 +++
> include/linux/mmc/mmc.h | 6 +++++
> 3 files changed, 53 insertions(+), 15 deletions(-)
>
> diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
> index 7728f26..bd4372c 100644
> --- a/drivers/mmc/host/sdhci.c
> +++ b/drivers/mmc/host/sdhci.c
> @@ -224,6 +224,7 @@ void sdhci_reset(struct sdhci_host *host, u8 mask)
> if (timedout) {
> pr_err("%s: Reset 0x%x never completed.\n",
> mmc_hostname(host->mmc), (int)mask);
> + sdhci_err_stats_inc(host, CTRL_TIMEOUT);
> sdhci_dumpregs(host);
> return;
> }
> @@ -1719,6 +1720,7 @@ static bool sdhci_send_command_retry(struct sdhci_host *host,
> if (!timeout--) {
> pr_err("%s: Controller never released inhibit bit(s).\n",
> mmc_hostname(host->mmc));
> + sdhci_err_stats_inc(host, CTRL_TIMEOUT);
> sdhci_dumpregs(host);
> cmd->error = -EIO;
> return false;
> @@ -1968,6 +1970,7 @@ void sdhci_enable_clk(struct sdhci_host *host, u16 clk)
> if (timedout) {
> pr_err("%s: Internal clock never stabilised.\n",
> mmc_hostname(host->mmc));
> + sdhci_err_stats_inc(host, CTRL_TIMEOUT);
> sdhci_dumpregs(host);
> return;
> }
> @@ -1990,6 +1993,7 @@ void sdhci_enable_clk(struct sdhci_host *host, u16 clk)
> if (timedout) {
> pr_err("%s: PLL clock never stabilised.\n",
> mmc_hostname(host->mmc));
> + sdhci_err_stats_inc(host, CTRL_TIMEOUT);
> sdhci_dumpregs(host);
> return;
> }
> @@ -3145,6 +3149,7 @@ static void sdhci_timeout_timer(struct timer_list *t)
> if (host->cmd && !sdhci_data_line_cmd(host->cmd)) {
> pr_err("%s: Timeout waiting for hardware cmd interrupt.\n",
> mmc_hostname(host->mmc));
> + sdhci_err_stats_inc(host, REQ_TIMEOUT);
> sdhci_dumpregs(host);
>
> host->cmd->error = -ETIMEDOUT;
> @@ -3167,6 +3172,7 @@ static void sdhci_timeout_data_timer(struct timer_list *t)
> (host->cmd && sdhci_data_line_cmd(host->cmd))) {
> pr_err("%s: Timeout waiting for hardware interrupt.\n",
> mmc_hostname(host->mmc));
> + sdhci_err_stats_inc(host, REQ_TIMEOUT);
> sdhci_dumpregs(host);
>
> if (host->data) {
> @@ -3218,17 +3224,21 @@ static void sdhci_cmd_irq(struct sdhci_host *host, u32 intmask, u32 *intmask_p)
> return;
> pr_err("%s: Got command interrupt 0x%08x even though no command operation was in progress.\n",
> mmc_hostname(host->mmc), (unsigned)intmask);
> + sdhci_err_stats_inc(host, UNEXPECTED_IRQ);
> sdhci_dumpregs(host);
> return;
> }
>
> 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
> + sdhci_err_stats_inc(host, CMD_TIMEOUT);
> + } else {
> host->cmd->error = -EILSEQ;
> -
> + if (!mmc_op_tuning(host->cmd->opcode))
> + sdhci_err_stats_inc(host, CMD_CRC);
> + }
> /* Treat data command CRC error the same as data CRC error */
> if (host->cmd->data &&
> (intmask & (SDHCI_INT_CRC | SDHCI_INT_TIMEOUT)) ==
> @@ -3249,6 +3259,8 @@ 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;
Blank line better here
> + sdhci_err_stats_inc(host, AUTO_CMD);
> +
This makes double blank line
>
> if (mrq->sbc && (host->flags & SDHCI_AUTO_CMD23)) {
> mrq->sbc->error = err;
> @@ -3326,6 +3338,7 @@ 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;
> + sdhci_err_stats_inc(host, CMD_TIMEOUT);
> __sdhci_finish_mrq(host, data_cmd->mrq);
> return;
> }
> @@ -3354,23 +3367,30 @@ static void sdhci_data_irq(struct sdhci_host *host, u32 intmask)
>
> pr_err("%s: Got data interrupt 0x%08x even though no data operation was in progress.\n",
> mmc_hostname(host->mmc), (unsigned)intmask);
> + sdhci_err_stats_inc(host, UNEXPECTED_IRQ);
> sdhci_dumpregs(host);
>
> return;
> }
>
> - if (intmask & SDHCI_INT_DATA_TIMEOUT)
> + if (intmask & SDHCI_INT_DATA_TIMEOUT) {
> host->data->error = -ETIMEDOUT;
> - else if (intmask & SDHCI_INT_DATA_END_BIT)
> + sdhci_err_stats_inc(host, DAT_TIMEOUT);
> + } else if (intmask & SDHCI_INT_DATA_END_BIT) {
> host->data->error = -EILSEQ;
> - else if ((intmask & SDHCI_INT_DATA_CRC) &&
> + if (!mmc_op_tuning(SDHCI_GET_CMD(sdhci_readw(host, SDHCI_COMMAND))))
> + sdhci_err_stats_inc(host, DAT_CRC);
> + } 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;
> - else if (intmask & SDHCI_INT_ADMA_ERROR) {
> + if (!mmc_op_tuning(SDHCI_GET_CMD(sdhci_readw(host, SDHCI_COMMAND))))
> + sdhci_err_stats_inc(host, 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);
> + sdhci_err_stats_inc(host, ADMA);
> host->data->error = -EIO;
> if (host->ops->adma_workaround)
> host->ops->adma_workaround(host, intmask);
> @@ -3568,6 +3588,7 @@ static irqreturn_t sdhci_irq(int irq, void *dev_id)
> if (unexpected) {
> pr_err("%s: Unexpected interrupt 0x%08x.\n",
> mmc_hostname(host->mmc), unexpected);
> + sdhci_err_stats_inc(host, UNEXPECTED_IRQ);
> sdhci_dumpregs(host);
> }
>
> @@ -3889,20 +3910,27 @@ 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 (!mmc_op_tuning(host->cmd->opcode))
> + sdhci_err_stats_inc(host, CMD_CRC);
> + } else if (intmask & SDHCI_INT_TIMEOUT) {
> *cmd_error = -ETIMEDOUT;
> - else
> + sdhci_err_stats_inc(host, 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 (!mmc_op_tuning(host->cmd->opcode))
> + sdhci_err_stats_inc(host, DAT_CRC);
> + } else if (intmask & SDHCI_INT_DATA_TIMEOUT) {
> *data_error = -ETIMEDOUT;
> - else if (intmask & SDHCI_INT_ADMA_ERROR)
> + sdhci_err_stats_inc(host, DAT_TIMEOUT);
> + } else if (intmask & SDHCI_INT_ADMA_ERROR) {
> *data_error = -EIO;
> - else
> + sdhci_err_stats_inc(host, ADMA);
> + } else
> *data_error = 0;
>
> /* Clear selected interrupts. */
> @@ -3918,6 +3946,7 @@ bool sdhci_cqe_irq(struct sdhci_host *host, u32 intmask, int *cmd_error,
> sdhci_writel(host, intmask, SDHCI_INT_STATUS);
> pr_err("%s: CQE: Unexpected interrupt 0x%08x.\n",
> mmc_hostname(host->mmc), intmask);
> + sdhci_err_stats_inc(host, UNEXPECTED_IRQ);
> sdhci_dumpregs(host);
> }
>
> diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h
> index 6c689be..2c02ded 100644
> --- a/drivers/mmc/host/sdhci.h
> +++ b/drivers/mmc/host/sdhci.h
> @@ -356,6 +356,9 @@ struct sdhci_adma2_64_desc {
> */
> #define MMC_CMD_TRANSFER_TIME (10 * NSEC_PER_MSEC) /* max 10 ms */
>
> +#define sdhci_err_stats_inc(host, err_name) \
> + mmc_debugfs_err_stats_inc((host)->mmc, MMC_ERR_##err_name)
> +
> enum sdhci_cookie {
> COOKIE_UNMAPPED,
> COOKIE_PRE_MAPPED, /* mapped by sdhci_pre_req() */
> diff --git a/include/linux/mmc/mmc.h b/include/linux/mmc/mmc.h
> index d9a65c6..9c50bc4 100644
> --- a/include/linux/mmc/mmc.h
> +++ b/include/linux/mmc/mmc.h
> @@ -99,6 +99,12 @@ static inline bool mmc_op_multi(u32 opcode)
> opcode == MMC_READ_MULTIPLE_BLOCK;
> }
>
> +static inline bool mmc_op_tuning(u32 opcode)
> +{
> + return opcode == MMC_SEND_TUNING_BLOCK ||
> + opcode == MMC_SEND_TUNING_BLOCK_HS200;
> +}
> +
> /*
> * MMC_SWITCH argument format:
> *
Hi Adrain,
Thank You for the review.
Please find the inline comments.
Thanks,
Sajida
On 5/23/2022 12:44 PM, Adrian Hunter wrote:
> On 18/05/22 10:02, Shaik Sajida Bhanu wrote:
>> Add changes to capture eMMC and SD card errors.
>> This is useful for debug and testing.
>>
>> Signed-off-by: Liangliang Lu <[email protected]>
>> Signed-off-by: Sayali Lokhande <[email protected]>
>> Signed-off-by: Bao D. Nguyen <[email protected]>
>> Signed-off-by: Shaik Sajida Bhanu <[email protected]>
> Misplaced blank line (see below) and seems to need to be
Sure will address
> re-based on Ulf's next branch:
>
> git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc.git next
>
> Otherwise:
>
> Acked-by: Adrian Hunter <[email protected]>
>
>> ---
>> drivers/mmc/host/sdhci.c | 59 ++++++++++++++++++++++++++++++++++++------------
>> drivers/mmc/host/sdhci.h | 3 +++
>> include/linux/mmc/mmc.h | 6 +++++
>> 3 files changed, 53 insertions(+), 15 deletions(-)
>>
>> diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
>> index 7728f26..bd4372c 100644
>> --- a/drivers/mmc/host/sdhci.c
>> +++ b/drivers/mmc/host/sdhci.c
>> @@ -224,6 +224,7 @@ void sdhci_reset(struct sdhci_host *host, u8 mask)
>> if (timedout) {
>> pr_err("%s: Reset 0x%x never completed.\n",
>> mmc_hostname(host->mmc), (int)mask);
>> + sdhci_err_stats_inc(host, CTRL_TIMEOUT);
>> sdhci_dumpregs(host);
>> return;
>> }
>> @@ -1719,6 +1720,7 @@ static bool sdhci_send_command_retry(struct sdhci_host *host,
>> if (!timeout--) {
>> pr_err("%s: Controller never released inhibit bit(s).\n",
>> mmc_hostname(host->mmc));
>> + sdhci_err_stats_inc(host, CTRL_TIMEOUT);
>> sdhci_dumpregs(host);
>> cmd->error = -EIO;
>> return false;
>> @@ -1968,6 +1970,7 @@ void sdhci_enable_clk(struct sdhci_host *host, u16 clk)
>> if (timedout) {
>> pr_err("%s: Internal clock never stabilised.\n",
>> mmc_hostname(host->mmc));
>> + sdhci_err_stats_inc(host, CTRL_TIMEOUT);
>> sdhci_dumpregs(host);
>> return;
>> }
>> @@ -1990,6 +1993,7 @@ void sdhci_enable_clk(struct sdhci_host *host, u16 clk)
>> if (timedout) {
>> pr_err("%s: PLL clock never stabilised.\n",
>> mmc_hostname(host->mmc));
>> + sdhci_err_stats_inc(host, CTRL_TIMEOUT);
>> sdhci_dumpregs(host);
>> return;
>> }
>> @@ -3145,6 +3149,7 @@ static void sdhci_timeout_timer(struct timer_list *t)
>> if (host->cmd && !sdhci_data_line_cmd(host->cmd)) {
>> pr_err("%s: Timeout waiting for hardware cmd interrupt.\n",
>> mmc_hostname(host->mmc));
>> + sdhci_err_stats_inc(host, REQ_TIMEOUT);
>> sdhci_dumpregs(host);
>>
>> host->cmd->error = -ETIMEDOUT;
>> @@ -3167,6 +3172,7 @@ static void sdhci_timeout_data_timer(struct timer_list *t)
>> (host->cmd && sdhci_data_line_cmd(host->cmd))) {
>> pr_err("%s: Timeout waiting for hardware interrupt.\n",
>> mmc_hostname(host->mmc));
>> + sdhci_err_stats_inc(host, REQ_TIMEOUT);
>> sdhci_dumpregs(host);
>>
>> if (host->data) {
>> @@ -3218,17 +3224,21 @@ static void sdhci_cmd_irq(struct sdhci_host *host, u32 intmask, u32 *intmask_p)
>> return;
>> pr_err("%s: Got command interrupt 0x%08x even though no command operation was in progress.\n",
>> mmc_hostname(host->mmc), (unsigned)intmask);
>> + sdhci_err_stats_inc(host, UNEXPECTED_IRQ);
>> sdhci_dumpregs(host);
>> return;
>> }
>>
>> 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
>> + sdhci_err_stats_inc(host, CMD_TIMEOUT);
>> + } else {
>> host->cmd->error = -EILSEQ;
>> -
>> + if (!mmc_op_tuning(host->cmd->opcode))
>> + sdhci_err_stats_inc(host, CMD_CRC);
>> + }
>> /* Treat data command CRC error the same as data CRC error */
>> if (host->cmd->data &&
>> (intmask & (SDHCI_INT_CRC | SDHCI_INT_TIMEOUT)) ==
>> @@ -3249,6 +3259,8 @@ 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;
> Blank line better here
>
>> + sdhci_err_stats_inc(host, AUTO_CMD);
>> +
> This makes double blank line
>
>>
>> if (mrq->sbc && (host->flags & SDHCI_AUTO_CMD23)) {
>> mrq->sbc->error = err;
>> @@ -3326,6 +3338,7 @@ 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;
>> + sdhci_err_stats_inc(host, CMD_TIMEOUT);
>> __sdhci_finish_mrq(host, data_cmd->mrq);
>> return;
>> }
>> @@ -3354,23 +3367,30 @@ static void sdhci_data_irq(struct sdhci_host *host, u32 intmask)
>>
>> pr_err("%s: Got data interrupt 0x%08x even though no data operation was in progress.\n",
>> mmc_hostname(host->mmc), (unsigned)intmask);
>> + sdhci_err_stats_inc(host, UNEXPECTED_IRQ);
>> sdhci_dumpregs(host);
>>
>> return;
>> }
>>
>> - if (intmask & SDHCI_INT_DATA_TIMEOUT)
>> + if (intmask & SDHCI_INT_DATA_TIMEOUT) {
>> host->data->error = -ETIMEDOUT;
>> - else if (intmask & SDHCI_INT_DATA_END_BIT)
>> + sdhci_err_stats_inc(host, DAT_TIMEOUT);
>> + } else if (intmask & SDHCI_INT_DATA_END_BIT) {
>> host->data->error = -EILSEQ;
>> - else if ((intmask & SDHCI_INT_DATA_CRC) &&
>> + if (!mmc_op_tuning(SDHCI_GET_CMD(sdhci_readw(host, SDHCI_COMMAND))))
>> + sdhci_err_stats_inc(host, DAT_CRC);
>> + } 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;
>> - else if (intmask & SDHCI_INT_ADMA_ERROR) {
>> + if (!mmc_op_tuning(SDHCI_GET_CMD(sdhci_readw(host, SDHCI_COMMAND))))
>> + sdhci_err_stats_inc(host, 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);
>> + sdhci_err_stats_inc(host, ADMA);
>> host->data->error = -EIO;
>> if (host->ops->adma_workaround)
>> host->ops->adma_workaround(host, intmask);
>> @@ -3568,6 +3588,7 @@ static irqreturn_t sdhci_irq(int irq, void *dev_id)
>> if (unexpected) {
>> pr_err("%s: Unexpected interrupt 0x%08x.\n",
>> mmc_hostname(host->mmc), unexpected);
>> + sdhci_err_stats_inc(host, UNEXPECTED_IRQ);
>> sdhci_dumpregs(host);
>> }
>>
>> @@ -3889,20 +3910,27 @@ 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 (!mmc_op_tuning(host->cmd->opcode))
>> + sdhci_err_stats_inc(host, CMD_CRC);
>> + } else if (intmask & SDHCI_INT_TIMEOUT) {
>> *cmd_error = -ETIMEDOUT;
>> - else
>> + sdhci_err_stats_inc(host, 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 (!mmc_op_tuning(host->cmd->opcode))
>> + sdhci_err_stats_inc(host, DAT_CRC);
>> + } else if (intmask & SDHCI_INT_DATA_TIMEOUT) {
>> *data_error = -ETIMEDOUT;
>> - else if (intmask & SDHCI_INT_ADMA_ERROR)
>> + sdhci_err_stats_inc(host, DAT_TIMEOUT);
>> + } else if (intmask & SDHCI_INT_ADMA_ERROR) {
>> *data_error = -EIO;
>> - else
>> + sdhci_err_stats_inc(host, ADMA);
>> + } else
>> *data_error = 0;
>>
>> /* Clear selected interrupts. */
>> @@ -3918,6 +3946,7 @@ bool sdhci_cqe_irq(struct sdhci_host *host, u32 intmask, int *cmd_error,
>> sdhci_writel(host, intmask, SDHCI_INT_STATUS);
>> pr_err("%s: CQE: Unexpected interrupt 0x%08x.\n",
>> mmc_hostname(host->mmc), intmask);
>> + sdhci_err_stats_inc(host, UNEXPECTED_IRQ);
>> sdhci_dumpregs(host);
>> }
>>
>> diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h
>> index 6c689be..2c02ded 100644
>> --- a/drivers/mmc/host/sdhci.h
>> +++ b/drivers/mmc/host/sdhci.h
>> @@ -356,6 +356,9 @@ struct sdhci_adma2_64_desc {
>> */
>> #define MMC_CMD_TRANSFER_TIME (10 * NSEC_PER_MSEC) /* max 10 ms */
>>
>> +#define sdhci_err_stats_inc(host, err_name) \
>> + mmc_debugfs_err_stats_inc((host)->mmc, MMC_ERR_##err_name)
>> +
>> enum sdhci_cookie {
>> COOKIE_UNMAPPED,
>> COOKIE_PRE_MAPPED, /* mapped by sdhci_pre_req() */
>> diff --git a/include/linux/mmc/mmc.h b/include/linux/mmc/mmc.h
>> index d9a65c6..9c50bc4 100644
>> --- a/include/linux/mmc/mmc.h
>> +++ b/include/linux/mmc/mmc.h
>> @@ -99,6 +99,12 @@ static inline bool mmc_op_multi(u32 opcode)
>> opcode == MMC_READ_MULTIPLE_BLOCK;
>> }
>>
>> +static inline bool mmc_op_tuning(u32 opcode)
>> +{
>> + return opcode == MMC_SEND_TUNING_BLOCK ||
>> + opcode == MMC_SEND_TUNING_BLOCK_HS200;
>> +}
>> +
>> /*
>> * MMC_SWITCH argument format:
>> *