* [PATCH v1 0/3] scsi: ufs: Provide fatal and auto-hibern8 error history
@ 2019-07-08 4:37 Stanley Chu
2019-07-08 4:37 ` [PATCH v1 1/3] scsi: ufs: Change names related to " Stanley Chu
` (3 more replies)
0 siblings, 4 replies; 5+ messages in thread
From: Stanley Chu @ 2019-07-08 4:37 UTC (permalink / raw)
To: linux-scsi, martin.petersen, avri.altman, alim.akhtar, pedrom.sousa
Cc: sthumma, marc.w.gonzalez, andy.teng, chun-hung.wu, kuohong.wang,
peter.wang, evgreen, subhashj, linux-mediatek, ygardi,
matthias.bgg, Stanley Chu, linux-arm-kernel, beanhuo
This patch set provides more information of fatal errros and auto-hibern8 errors
to improve debugging by keeping their error history as completed as possible.
Stanley Chu (3):
scsi: ufs: Change names related to error history
scsi: ufs: Add fatal and auto-hibern8 error history
scsi: ufs: Do not reset error history during host reset
drivers/scsi/ufs/ufshcd.c | 57 +++++++++++++++++++--------------------
drivers/scsi/ufs/ufshcd.h | 26 +++++++++++-------
2 files changed, 44 insertions(+), 39 deletions(-)
--
2.18.0
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 5+ messages in thread
* [PATCH v1 1/3] scsi: ufs: Change names related to error history
2019-07-08 4:37 [PATCH v1 0/3] scsi: ufs: Provide fatal and auto-hibern8 error history Stanley Chu
@ 2019-07-08 4:37 ` Stanley Chu
2019-07-08 4:37 ` [PATCH v1 2/3] scsi: ufs: Add fatal and auto-hibern8 " Stanley Chu
` (2 subsequent siblings)
3 siblings, 0 replies; 5+ messages in thread
From: Stanley Chu @ 2019-07-08 4:37 UTC (permalink / raw)
To: linux-scsi, martin.petersen, avri.altman, alim.akhtar, pedrom.sousa
Cc: sthumma, marc.w.gonzalez, andy.teng, chun-hung.wu, kuohong.wang,
peter.wang, evgreen, subhashj, linux-mediatek, ygardi,
matthias.bgg, Stanley Chu, linux-arm-kernel, beanhuo
Remove "uic" term in below error history functions and structures
for more general usages,
struct ufs_uic_err_reg_hist;
void ufshcd_update_uic_reg_hist(struct ufs_uic_err_reg_hist *reg_hist,
u32 reg);
void ufshcd_print_uic_err_hist(struct ufs_hba *hba,
struct ufs_uic)err_reg_hist *err_hist, char *err_name);
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
---
drivers/scsi/ufs/ufshcd.c | 39 ++++++++++++++++++++-------------------
drivers/scsi/ufs/ufshcd.h | 20 ++++++++++----------
2 files changed, 30 insertions(+), 29 deletions(-)
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index a208589426b1..eb062aba0d21 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -390,14 +390,15 @@ static void ufshcd_print_clk_freqs(struct ufs_hba *hba)
}
}
-static void ufshcd_print_uic_err_hist(struct ufs_hba *hba,
- struct ufs_uic_err_reg_hist *err_hist, char *err_name)
+static void ufshcd_print_err_hist(struct ufs_hba *hba,
+ struct ufs_err_reg_hist *err_hist,
+ char *err_name)
{
int i;
bool found = false;
- for (i = 0; i < UIC_ERR_REG_HIST_LENGTH; i++) {
- int p = (i + err_hist->pos) % UIC_ERR_REG_HIST_LENGTH;
+ for (i = 0; i < UFS_ERR_REG_HIST_LENGTH; i++) {
+ int p = (i + err_hist->pos) % UFS_ERR_REG_HIST_LENGTH;
if (err_hist->reg[p] == 0)
continue;
@@ -407,7 +408,7 @@ static void ufshcd_print_uic_err_hist(struct ufs_hba *hba,
}
if (!found)
- dev_err(hba->dev, "No record of %s uic errors\n", err_name);
+ dev_err(hba->dev, "No record of %s errors\n", err_name);
}
static void ufshcd_print_host_regs(struct ufs_hba *hba)
@@ -423,11 +424,11 @@ static void ufshcd_print_host_regs(struct ufs_hba *hba)
ktime_to_us(hba->ufs_stats.last_hibern8_exit_tstamp),
hba->ufs_stats.hibern8_exit_cnt);
- ufshcd_print_uic_err_hist(hba, &hba->ufs_stats.pa_err, "pa_err");
- ufshcd_print_uic_err_hist(hba, &hba->ufs_stats.dl_err, "dl_err");
- ufshcd_print_uic_err_hist(hba, &hba->ufs_stats.nl_err, "nl_err");
- ufshcd_print_uic_err_hist(hba, &hba->ufs_stats.tl_err, "tl_err");
- ufshcd_print_uic_err_hist(hba, &hba->ufs_stats.dme_err, "dme_err");
+ ufshcd_print_err_hist(hba, &hba->ufs_stats.pa_err, "pa_err");
+ ufshcd_print_err_hist(hba, &hba->ufs_stats.dl_err, "dl_err");
+ ufshcd_print_err_hist(hba, &hba->ufs_stats.nl_err, "nl_err");
+ ufshcd_print_err_hist(hba, &hba->ufs_stats.tl_err, "tl_err");
+ ufshcd_print_err_hist(hba, &hba->ufs_stats.dme_err, "dme_err");
ufshcd_print_clk_freqs(hba);
@@ -5346,12 +5347,12 @@ static void ufshcd_err_handler(struct work_struct *work)
pm_runtime_put_sync(hba->dev);
}
-static void ufshcd_update_uic_reg_hist(struct ufs_uic_err_reg_hist *reg_hist,
- u32 reg)
+static void ufshcd_update_reg_hist(struct ufs_err_reg_hist *reg_hist,
+ u32 reg)
{
reg_hist->reg[reg_hist->pos] = reg;
reg_hist->tstamp[reg_hist->pos] = ktime_get();
- reg_hist->pos = (reg_hist->pos + 1) % UIC_ERR_REG_HIST_LENGTH;
+ reg_hist->pos = (reg_hist->pos + 1) % UFS_ERR_REG_HIST_LENGTH;
}
/**
@@ -5372,13 +5373,13 @@ static void ufshcd_update_uic_error(struct ufs_hba *hba)
* must be checked but this error is handled separately.
*/
dev_dbg(hba->dev, "%s: UIC Lane error reported\n", __func__);
- ufshcd_update_uic_reg_hist(&hba->ufs_stats.pa_err, reg);
+ ufshcd_update_reg_hist(&hba->ufs_stats.pa_err, reg);
}
/* PA_INIT_ERROR is fatal and needs UIC reset */
reg = ufshcd_readl(hba, REG_UIC_ERROR_CODE_DATA_LINK_LAYER);
if (reg)
- ufshcd_update_uic_reg_hist(&hba->ufs_stats.dl_err, reg);
+ ufshcd_update_reg_hist(&hba->ufs_stats.dl_err, reg);
if (reg & UIC_DATA_LINK_LAYER_ERROR_PA_INIT)
hba->uic_error |= UFSHCD_UIC_DL_PA_INIT_ERROR;
@@ -5394,19 +5395,19 @@ static void ufshcd_update_uic_error(struct ufs_hba *hba)
/* UIC NL/TL/DME errors needs software retry */
reg = ufshcd_readl(hba, REG_UIC_ERROR_CODE_NETWORK_LAYER);
if (reg) {
- ufshcd_update_uic_reg_hist(&hba->ufs_stats.nl_err, reg);
+ ufshcd_update_reg_hist(&hba->ufs_stats.nl_err, reg);
hba->uic_error |= UFSHCD_UIC_NL_ERROR;
}
reg = ufshcd_readl(hba, REG_UIC_ERROR_CODE_TRANSPORT_LAYER);
if (reg) {
- ufshcd_update_uic_reg_hist(&hba->ufs_stats.tl_err, reg);
+ ufshcd_update_reg_hist(&hba->ufs_stats.tl_err, reg);
hba->uic_error |= UFSHCD_UIC_TL_ERROR;
}
reg = ufshcd_readl(hba, REG_UIC_ERROR_CODE_DME);
if (reg) {
- ufshcd_update_uic_reg_hist(&hba->ufs_stats.dme_err, reg);
+ ufshcd_update_reg_hist(&hba->ufs_stats.dme_err, reg);
hba->uic_error |= UFSHCD_UIC_DME_ERROR;
}
@@ -6682,7 +6683,7 @@ static void ufshcd_tune_unipro_params(struct ufs_hba *hba)
static void ufshcd_clear_dbg_ufs_stats(struct ufs_hba *hba)
{
- int err_reg_hist_size = sizeof(struct ufs_uic_err_reg_hist);
+ int err_reg_hist_size = sizeof(struct ufs_err_reg_hist);
hba->ufs_stats.hibern8_exit_cnt = 0;
hba->ufs_stats.last_hibern8_exit_tstamp = ktime_set(0, 0);
diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h
index 994d73d03207..dcc61f857c38 100644
--- a/drivers/scsi/ufs/ufshcd.h
+++ b/drivers/scsi/ufs/ufshcd.h
@@ -412,17 +412,17 @@ struct ufs_init_prefetch {
u32 icc_level;
};
-#define UIC_ERR_REG_HIST_LENGTH 8
+#define UFS_ERR_REG_HIST_LENGTH 8
/**
- * struct ufs_uic_err_reg_hist - keeps history of uic errors
+ * struct ufs_err_reg_hist - keeps history of uic errors
* @pos: index to indicate cyclic buffer position
* @reg: cyclic buffer for registers value
* @tstamp: cyclic buffer for time stamp
*/
-struct ufs_uic_err_reg_hist {
+struct ufs_err_reg_hist {
int pos;
- u32 reg[UIC_ERR_REG_HIST_LENGTH];
- ktime_t tstamp[UIC_ERR_REG_HIST_LENGTH];
+ u32 reg[UFS_ERR_REG_HIST_LENGTH];
+ ktime_t tstamp[UFS_ERR_REG_HIST_LENGTH];
};
/**
@@ -440,11 +440,11 @@ struct ufs_uic_err_reg_hist {
struct ufs_stats {
u32 hibern8_exit_cnt;
ktime_t last_hibern8_exit_tstamp;
- struct ufs_uic_err_reg_hist pa_err;
- struct ufs_uic_err_reg_hist dl_err;
- struct ufs_uic_err_reg_hist nl_err;
- struct ufs_uic_err_reg_hist tl_err;
- struct ufs_uic_err_reg_hist dme_err;
+ struct ufs_err_reg_hist pa_err;
+ struct ufs_err_reg_hist dl_err;
+ struct ufs_err_reg_hist nl_err;
+ struct ufs_err_reg_hist tl_err;
+ struct ufs_err_reg_hist dme_err;
};
/**
--
2.18.0
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 5+ messages in thread
* [PATCH v1 2/3] scsi: ufs: Add fatal and auto-hibern8 error history
2019-07-08 4:37 [PATCH v1 0/3] scsi: ufs: Provide fatal and auto-hibern8 error history Stanley Chu
2019-07-08 4:37 ` [PATCH v1 1/3] scsi: ufs: Change names related to " Stanley Chu
@ 2019-07-08 4:37 ` Stanley Chu
2019-07-08 4:37 ` [PATCH v1 3/3] scsi: ufs: Do not reset error history during host reset Stanley Chu
2019-07-08 8:25 ` [PATCH v1 0/3] scsi: ufs: Provide fatal and auto-hibern8 error history Avri Altman
3 siblings, 0 replies; 5+ messages in thread
From: Stanley Chu @ 2019-07-08 4:37 UTC (permalink / raw)
To: linux-scsi, martin.petersen, avri.altman, alim.akhtar, pedrom.sousa
Cc: sthumma, marc.w.gonzalez, andy.teng, chun-hung.wu, kuohong.wang,
peter.wang, evgreen, subhashj, linux-mediatek, ygardi,
matthias.bgg, Stanley Chu, linux-arm-kernel, beanhuo
Provide more information of fatal errros and auto-hibern8 errors
to improve debugging by extending existed UFS error history
framework.
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
---
drivers/scsi/ufs/ufshcd.c | 11 ++++++++++-
drivers/scsi/ufs/ufshcd.h | 6 ++++++
2 files changed, 16 insertions(+), 1 deletion(-)
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index eb062aba0d21..b8b874311509 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -429,6 +429,9 @@ static void ufshcd_print_host_regs(struct ufs_hba *hba)
ufshcd_print_err_hist(hba, &hba->ufs_stats.nl_err, "nl_err");
ufshcd_print_err_hist(hba, &hba->ufs_stats.tl_err, "tl_err");
ufshcd_print_err_hist(hba, &hba->ufs_stats.dme_err, "dme_err");
+ ufshcd_print_err_hist(hba, &hba->ufs_stats.fatal_err, "fatal_err");
+ ufshcd_print_err_hist(hba, &hba->ufs_stats.auto_hibern8_err,
+ "auto_hibern8_err");
ufshcd_print_clk_freqs(hba);
@@ -5440,8 +5443,10 @@ static void ufshcd_check_errors(struct ufs_hba *hba)
{
bool queue_eh_work = false;
- if (hba->errors & INT_FATAL_ERRORS)
+ if (hba->errors & INT_FATAL_ERRORS) {
+ ufshcd_update_reg_hist(&hba->ufs_stats.fatal_err, hba->errors);
queue_eh_work = true;
+ }
if (hba->errors & UIC_ERROR) {
hba->uic_error = 0;
@@ -5456,6 +5461,8 @@ static void ufshcd_check_errors(struct ufs_hba *hba)
__func__, (hba->errors & UIC_HIBERNATE_ENTER) ?
"Enter" : "Exit",
hba->errors, ufshcd_get_upmcrs(hba));
+ ufshcd_update_reg_hist(&hba->ufs_stats.auto_hibern8_err,
+ hba->errors);
queue_eh_work = true;
}
@@ -6693,6 +6700,8 @@ static void ufshcd_clear_dbg_ufs_stats(struct ufs_hba *hba)
memset(&hba->ufs_stats.nl_err, 0, err_reg_hist_size);
memset(&hba->ufs_stats.tl_err, 0, err_reg_hist_size);
memset(&hba->ufs_stats.dme_err, 0, err_reg_hist_size);
+ memset(&hba->ufs_stats.fatal_err, 0, err_reg_hist_size);
+ memset(&hba->ufs_stats.auto_hibern8_err, 0, err_reg_hist_size);
hba->req_abort_count = 0;
}
diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h
index dcc61f857c38..edd9a6f9cc3b 100644
--- a/drivers/scsi/ufs/ufshcd.h
+++ b/drivers/scsi/ufs/ufshcd.h
@@ -440,11 +440,17 @@ struct ufs_err_reg_hist {
struct ufs_stats {
u32 hibern8_exit_cnt;
ktime_t last_hibern8_exit_tstamp;
+
+ /* uic specific errors */
struct ufs_err_reg_hist pa_err;
struct ufs_err_reg_hist dl_err;
struct ufs_err_reg_hist nl_err;
struct ufs_err_reg_hist tl_err;
struct ufs_err_reg_hist dme_err;
+
+ /* fatal errors */
+ struct ufs_err_reg_hist fatal_err;
+ struct ufs_err_reg_hist auto_hibern8_err;
};
/**
--
2.18.0
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 5+ messages in thread
* [PATCH v1 3/3] scsi: ufs: Do not reset error history during host reset
2019-07-08 4:37 [PATCH v1 0/3] scsi: ufs: Provide fatal and auto-hibern8 error history Stanley Chu
2019-07-08 4:37 ` [PATCH v1 1/3] scsi: ufs: Change names related to " Stanley Chu
2019-07-08 4:37 ` [PATCH v1 2/3] scsi: ufs: Add fatal and auto-hibern8 " Stanley Chu
@ 2019-07-08 4:37 ` Stanley Chu
2019-07-08 8:25 ` [PATCH v1 0/3] scsi: ufs: Provide fatal and auto-hibern8 error history Avri Altman
3 siblings, 0 replies; 5+ messages in thread
From: Stanley Chu @ 2019-07-08 4:37 UTC (permalink / raw)
To: linux-scsi, martin.petersen, avri.altman, alim.akhtar, pedrom.sousa
Cc: sthumma, marc.w.gonzalez, andy.teng, chun-hung.wu, kuohong.wang,
peter.wang, evgreen, subhashj, linux-mediatek, ygardi,
matthias.bgg, Stanley Chu, linux-arm-kernel, beanhuo
Currently UFS error history will be reset and lost during host reset
flow by ufschd_probe_hba().
We shall not reset it and then error history can be kept as completed
as possible to improve debugging.
In addition, fix a minor display error in ufshcd_print_err_hist().
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
---
drivers/scsi/ufs/ufshcd.c | 13 +------------
1 file changed, 1 insertion(+), 12 deletions(-)
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index b8b874311509..a46c3d2b2ea3 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -402,7 +402,7 @@ static void ufshcd_print_err_hist(struct ufs_hba *hba,
if (err_hist->reg[p] == 0)
continue;
- dev_err(hba->dev, "%s[%d] = 0x%x at %lld us\n", err_name, i,
+ dev_err(hba->dev, "%s[%d] = 0x%x at %lld us\n", err_name, p,
err_hist->reg[p], ktime_to_us(err_hist->tstamp[p]));
found = true;
}
@@ -6690,19 +6690,8 @@ static void ufshcd_tune_unipro_params(struct ufs_hba *hba)
static void ufshcd_clear_dbg_ufs_stats(struct ufs_hba *hba)
{
- int err_reg_hist_size = sizeof(struct ufs_err_reg_hist);
-
hba->ufs_stats.hibern8_exit_cnt = 0;
hba->ufs_stats.last_hibern8_exit_tstamp = ktime_set(0, 0);
-
- memset(&hba->ufs_stats.pa_err, 0, err_reg_hist_size);
- memset(&hba->ufs_stats.dl_err, 0, err_reg_hist_size);
- memset(&hba->ufs_stats.nl_err, 0, err_reg_hist_size);
- memset(&hba->ufs_stats.tl_err, 0, err_reg_hist_size);
- memset(&hba->ufs_stats.dme_err, 0, err_reg_hist_size);
- memset(&hba->ufs_stats.fatal_err, 0, err_reg_hist_size);
- memset(&hba->ufs_stats.auto_hibern8_err, 0, err_reg_hist_size);
-
hba->req_abort_count = 0;
}
--
2.18.0
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 5+ messages in thread
* RE: [PATCH v1 0/3] scsi: ufs: Provide fatal and auto-hibern8 error history
2019-07-08 4:37 [PATCH v1 0/3] scsi: ufs: Provide fatal and auto-hibern8 error history Stanley Chu
` (2 preceding siblings ...)
2019-07-08 4:37 ` [PATCH v1 3/3] scsi: ufs: Do not reset error history during host reset Stanley Chu
@ 2019-07-08 8:25 ` Avri Altman
3 siblings, 0 replies; 5+ messages in thread
From: Avri Altman @ 2019-07-08 8:25 UTC (permalink / raw)
To: Stanley Chu, linux-scsi, martin.petersen, alim.akhtar, pedrom.sousa
Cc: sthumma, marc.w.gonzalez, andy.teng, chun-hung.wu, kuohong.wang,
peter.wang, evgreen, subhashj, linux-mediatek, ygardi,
matthias.bgg, linux-arm-kernel, beanhuo
This series looks good to me.
Thanks,
Avri
>
> This patch set provides more information of fatal errros and auto-hibern8
> errors
> to improve debugging by keeping their error history as completed as possible.
>
> Stanley Chu (3):
> scsi: ufs: Change names related to error history
> scsi: ufs: Add fatal and auto-hibern8 error history
> scsi: ufs: Do not reset error history during host reset
>
> drivers/scsi/ufs/ufshcd.c | 57 +++++++++++++++++++--------------------
> drivers/scsi/ufs/ufshcd.h | 26 +++++++++++-------
> 2 files changed, 44 insertions(+), 39 deletions(-)
>
> --
> 2.18.0
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 5+ messages in thread
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2019-07-08 4:37 [PATCH v1 0/3] scsi: ufs: Provide fatal and auto-hibern8 error history Stanley Chu
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2019-07-08 4:37 ` [PATCH v1 2/3] scsi: ufs: Add fatal and auto-hibern8 " Stanley Chu
2019-07-08 4:37 ` [PATCH v1 3/3] scsi: ufs: Do not reset error history during host reset Stanley Chu
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