| Message ID | 1642699582-14785-3-git-send-email-quic_c_sbhanu@quicinc.com |
|---|---|
| State | Superseded |
| Headers | show |
| Series | mmc: add error statistics for eMMC and SD card | expand |
On 20/01/2022 19:26, Shaik Sajida Bhanu wrote: > Add debug fs entry to query eMMC and SD card errors statistics > > Signed-off-by: Shaik Sajida Bhanu <quic_c_sbhanu@quicinc.com> > Signed-off-by: Liangliang Lu <luliang@codeaurora.org> > Signed-off-by: Sayali Lokhande <sayalil@codeaurora.org> > Signed-off-by: Bao D. Nguyen <nguyenb@codeaurora.org> > --- > drivers/mmc/core/debugfs.c | 81 ++++++++++++++++++++++++++++++++++++++++++++++ > 1 file changed, 81 insertions(+) > > diff --git a/drivers/mmc/core/debugfs.c b/drivers/mmc/core/debugfs.c > index 3fdbc80..f4cb594 100644 > --- a/drivers/mmc/core/debugfs.c > +++ b/drivers/mmc/core/debugfs.c > @@ -223,6 +223,82 @@ static int mmc_clock_opt_set(void *data, u64 val) > DEFINE_DEBUGFS_ATTRIBUTE(mmc_clock_fops, mmc_clock_opt_get, mmc_clock_opt_set, > "%llu\n"); > > +static int mmc_err_state_get(void *data, u64 *val) > +{ > + struct mmc_host *host = data; > + > + if (!host) > + return -EINVAL; > + > + *val = host->err_state ? 1 : 0; > + > + return 0; > +} > + > +DEFINE_SIMPLE_ATTRIBUTE(mmc_err_state, mmc_err_state_get, NULL, "%llu\n"); > + > +static int mmc_err_stats_show(struct seq_file *file, void *data) > +{ > + struct mmc_host *host = (struct mmc_host *)file->private; > + const char *desc[MMC_ERR_MAX] = { > + [MMC_ERR_CMD_TIMEOUT] = "Command Timeout Occurred", > + [MMC_ERR_CMD_CRC] = "Command CRC Errors Occurred", > + [MMC_ERR_DAT_TIMEOUT] = "Data Timeout Occurred", > + [MMC_ERR_DAT_CRC] = "Data CRC Errors Occurred", > + [MMC_ERR_AUTO_CMD] = "Auto-Cmd Error Occurred", > + [MMC_ERR_ADMA] = "ADMA Error Occurred", > + [MMC_ERR_TUNING] = "Tuning Error Occurred", > + [MMC_ERR_CMDQ_RED] = "CMDQ RED Errors", > + [MMC_ERR_CMDQ_GCE] = "CMDQ GCE Errors", > + [MMC_ERR_CMDQ_ICCE] = "CMDQ ICCE Errors", > + [MMC_ERR_REQ_TIMEOUT] = "Request Timedout", > + [MMC_ERR_CMDQ_REQ_TIMEOUT] = "CMDQ Request Timedout", > + [MMC_ERR_ICE_CFG] = "ICE Config Errors", > + }; > + int i; > + > + if (!host) > + return -EINVAL; > + > + if (!host->err_stats_enabled) { > + seq_printf(file, "Not supported by driver\n"); > + return 0; > + } > + > + for (i = 0; i < MMC_ERR_MAX; i++) { > + if (desc[i]) > + seq_printf(file, "# %s:\t %d\n", > + desc[i], host->err_stats[i]); > + } > + > + return 0; > +} > + > +static int mmc_err_stats_open(struct inode *inode, struct file *file) > +{ > + return single_open(file, mmc_err_stats_show, inode->i_private); > +} > + > +static ssize_t mmc_err_stats_write(struct file *filp, const char __user *ubuf, > + size_t cnt, loff_t *ppos) > +{ > + struct mmc_host *host = filp->f_mapping->host->i_private; > + > + if (!host) > + return -EINVAL; > + > + pr_debug("%s: Resetting MMC error statistics\n", __func__); > + memset(host->err_stats, 0, sizeof(host->err_stats)); > + > + return cnt; > +} > + > +static const struct file_operations mmc_err_stats_fops = { > + .open = mmc_err_stats_open, > + .read = seq_read, > + .write = mmc_err_stats_write, > +}; > + > void mmc_add_host_debugfs(struct mmc_host *host) > { > struct dentry *root; > @@ -236,6 +312,11 @@ void mmc_add_host_debugfs(struct mmc_host *host) > debugfs_create_file_unsafe("clock", S_IRUSR | S_IWUSR, root, host, > &mmc_clock_fops); > > + debugfs_create_file("err_state", 0600, root, host, > + &mmc_err_state); Please, let's drop err_state for now > + debugfs_create_file("err_stats", 0600, root, host, > + &mmc_err_stats_fops); > + > #ifdef CONFIG_FAIL_MMC_REQUEST > if (fail_request) > setup_fault_attr(&fail_default_attr, fail_request); >
Hi, Thanks for the review. Please find the inline comments. Thanks, Sajida -----Original Message----- From: Adrian Hunter <adrian.hunter@intel.com> Sent: Friday, January 21, 2022 12:40 PM To: Sajida Bhanu (Temp) (QUIC) <quic_c_sbhanu@quicinc.com>; Asutosh Das (QUIC) <quic_asutoshd@quicinc.com>; ulf.hansson@linaro.org; agross@kernel.org; bjorn.andersson@linaro.org; linux-mmc@vger.kernel.org; linux-arm-msm@vger.kernel.org; linux-kernel@vger.kernel.org Cc: stummala@codeaurora.org; vbadigan@codeaurora.org; Ram Prakash Gupta (QUIC) <quic_rampraka@quicinc.com>; Pradeep Pragallapati (QUIC) <quic_pragalla@quicinc.com>; sartgarg@codeaurora.org; nitirawa@codeaurora.org; sayalil@codeaurora.org; Liangliang Lu <luliang@codeaurora.org>; Bao D . Nguyen <nguyenb@codeaurora.org> Subject: Re: [PATCH V3 2/4] mmc: debugfs: Add debug fs entry for mmc driver On 20/01/2022 19:26, Shaik Sajida Bhanu wrote: > Add debug fs entry to query eMMC and SD card errors statistics > > Signed-off-by: Shaik Sajida Bhanu <quic_c_sbhanu@quicinc.com> > Signed-off-by: Liangliang Lu <luliang@codeaurora.org> > Signed-off-by: Sayali Lokhande <sayalil@codeaurora.org> > Signed-off-by: Bao D. Nguyen <nguyenb@codeaurora.org> > --- > drivers/mmc/core/debugfs.c | 81 > ++++++++++++++++++++++++++++++++++++++++++++++ > 1 file changed, 81 insertions(+) > > diff --git a/drivers/mmc/core/debugfs.c b/drivers/mmc/core/debugfs.c > index 3fdbc80..f4cb594 100644 > --- a/drivers/mmc/core/debugfs.c > +++ b/drivers/mmc/core/debugfs.c > @@ -223,6 +223,82 @@ static int mmc_clock_opt_set(void *data, u64 val) > DEFINE_DEBUGFS_ATTRIBUTE(mmc_clock_fops, mmc_clock_opt_get, mmc_clock_opt_set, > "%llu\n"); > > +static int mmc_err_state_get(void *data, u64 *val) { > + struct mmc_host *host = data; > + > + if (!host) > + return -EINVAL; > + > + *val = host->err_state ? 1 : 0; > + > + return 0; > +} > + > +DEFINE_SIMPLE_ATTRIBUTE(mmc_err_state, mmc_err_state_get, NULL, > +"%llu\n"); > + > +static int mmc_err_stats_show(struct seq_file *file, void *data) { > + struct mmc_host *host = (struct mmc_host *)file->private; > + const char *desc[MMC_ERR_MAX] = { > + [MMC_ERR_CMD_TIMEOUT] = "Command Timeout Occurred", > + [MMC_ERR_CMD_CRC] = "Command CRC Errors Occurred", > + [MMC_ERR_DAT_TIMEOUT] = "Data Timeout Occurred", > + [MMC_ERR_DAT_CRC] = "Data CRC Errors Occurred", > + [MMC_ERR_AUTO_CMD] = "Auto-Cmd Error Occurred", > + [MMC_ERR_ADMA] = "ADMA Error Occurred", > + [MMC_ERR_TUNING] = "Tuning Error Occurred", > + [MMC_ERR_CMDQ_RED] = "CMDQ RED Errors", > + [MMC_ERR_CMDQ_GCE] = "CMDQ GCE Errors", > + [MMC_ERR_CMDQ_ICCE] = "CMDQ ICCE Errors", > + [MMC_ERR_REQ_TIMEOUT] = "Request Timedout", > + [MMC_ERR_CMDQ_REQ_TIMEOUT] = "CMDQ Request Timedout", > + [MMC_ERR_ICE_CFG] = "ICE Config Errors", > + }; > + int i; > + > + if (!host) > + return -EINVAL; > + > + if (!host->err_stats_enabled) { > + seq_printf(file, "Not supported by driver\n"); > + return 0; > + } > + > + for (i = 0; i < MMC_ERR_MAX; i++) { > + if (desc[i]) > + seq_printf(file, "# %s:\t %d\n", > + desc[i], host->err_stats[i]); > + } > + > + return 0; > +} > + > +static int mmc_err_stats_open(struct inode *inode, struct file *file) > +{ > + return single_open(file, mmc_err_stats_show, inode->i_private); } > + > +static ssize_t mmc_err_stats_write(struct file *filp, const char __user *ubuf, > + size_t cnt, loff_t *ppos) > +{ > + struct mmc_host *host = filp->f_mapping->host->i_private; > + > + if (!host) > + return -EINVAL; > + > + pr_debug("%s: Resetting MMC error statistics\n", __func__); > + memset(host->err_stats, 0, sizeof(host->err_stats)); > + > + return cnt; > +} > + > +static const struct file_operations mmc_err_stats_fops = { > + .open = mmc_err_stats_open, > + .read = seq_read, > + .write = mmc_err_stats_write, > +}; > + > void mmc_add_host_debugfs(struct mmc_host *host) { > struct dentry *root; > @@ -236,6 +312,11 @@ void mmc_add_host_debugfs(struct mmc_host *host) > debugfs_create_file_unsafe("clock", S_IRUSR | S_IWUSR, root, host, > &mmc_clock_fops); > > + debugfs_create_file("err_state", 0600, root, host, > + &mmc_err_state); Please, let's drop err_state for now >>>>> first we can check this right, if it is set then we can go and check err_stats[] to know more on type of error (data /cmd timeout or CRC errors etc.). Please let me know your opinion on this.( Same as patch set (V3 1/4). > + debugfs_create_file("err_stats", 0600, root, host, > + &mmc_err_stats_fops); > + > #ifdef CONFIG_FAIL_MMC_REQUEST > if (fail_request) > setup_fault_attr(&fail_default_attr, fail_request); >
diff --git a/drivers/mmc/core/debugfs.c b/drivers/mmc/core/debugfs.c index 3fdbc80..f4cb594 100644 --- a/drivers/mmc/core/debugfs.c +++ b/drivers/mmc/core/debugfs.c @@ -223,6 +223,82 @@ static int mmc_clock_opt_set(void *data, u64 val) DEFINE_DEBUGFS_ATTRIBUTE(mmc_clock_fops, mmc_clock_opt_get, mmc_clock_opt_set, "%llu\n"); +static int mmc_err_state_get(void *data, u64 *val) +{ + struct mmc_host *host = data; + + if (!host) + return -EINVAL; + + *val = host->err_state ? 1 : 0; + + return 0; +} + +DEFINE_SIMPLE_ATTRIBUTE(mmc_err_state, mmc_err_state_get, NULL, "%llu\n"); + +static int mmc_err_stats_show(struct seq_file *file, void *data) +{ + struct mmc_host *host = (struct mmc_host *)file->private; + const char *desc[MMC_ERR_MAX] = { + [MMC_ERR_CMD_TIMEOUT] = "Command Timeout Occurred", + [MMC_ERR_CMD_CRC] = "Command CRC Errors Occurred", + [MMC_ERR_DAT_TIMEOUT] = "Data Timeout Occurred", + [MMC_ERR_DAT_CRC] = "Data CRC Errors Occurred", + [MMC_ERR_AUTO_CMD] = "Auto-Cmd Error Occurred", + [MMC_ERR_ADMA] = "ADMA Error Occurred", + [MMC_ERR_TUNING] = "Tuning Error Occurred", + [MMC_ERR_CMDQ_RED] = "CMDQ RED Errors", + [MMC_ERR_CMDQ_GCE] = "CMDQ GCE Errors", + [MMC_ERR_CMDQ_ICCE] = "CMDQ ICCE Errors", + [MMC_ERR_REQ_TIMEOUT] = "Request Timedout", + [MMC_ERR_CMDQ_REQ_TIMEOUT] = "CMDQ Request Timedout", + [MMC_ERR_ICE_CFG] = "ICE Config Errors", + }; + int i; + + if (!host) + return -EINVAL; + + if (!host->err_stats_enabled) { + seq_printf(file, "Not supported by driver\n"); + return 0; + } + + for (i = 0; i < MMC_ERR_MAX; i++) { + if (desc[i]) + seq_printf(file, "# %s:\t %d\n", + desc[i], host->err_stats[i]); + } + + return 0; +} + +static int mmc_err_stats_open(struct inode *inode, struct file *file) +{ + return single_open(file, mmc_err_stats_show, inode->i_private); +} + +static ssize_t mmc_err_stats_write(struct file *filp, const char __user *ubuf, + size_t cnt, loff_t *ppos) +{ + struct mmc_host *host = filp->f_mapping->host->i_private; + + if (!host) + return -EINVAL; + + pr_debug("%s: Resetting MMC error statistics\n", __func__); + memset(host->err_stats, 0, sizeof(host->err_stats)); + + return cnt; +} + +static const struct file_operations mmc_err_stats_fops = { + .open = mmc_err_stats_open, + .read = seq_read, + .write = mmc_err_stats_write, +}; + void mmc_add_host_debugfs(struct mmc_host *host) { struct dentry *root; @@ -236,6 +312,11 @@ void mmc_add_host_debugfs(struct mmc_host *host) debugfs_create_file_unsafe("clock", S_IRUSR | S_IWUSR, root, host, &mmc_clock_fops); + debugfs_create_file("err_state", 0600, root, host, + &mmc_err_state); + debugfs_create_file("err_stats", 0600, root, host, + &mmc_err_stats_fops); + #ifdef CONFIG_FAIL_MMC_REQUEST if (fail_request) setup_fault_attr(&fail_default_attr, fail_request);