From: Stanley Chu <stanley.chu@mediatek.com>
To: <linux-scsi@vger.kernel.org>, <martin.petersen@oracle.com>,
<avri.altman@wdc.com>, <alim.akhtar@samsung.com>,
<pedrom.sousa@synopsys.com>
Cc: sthumma@codeaurora.org, marc.w.gonzalez@free.fr,
andy.teng@mediatek.com, chun-hung.wu@mediatek.com,
kuohong.wang@mediatek.com, peter.wang@mediatek.com,
evgreen@chromium.org, subhashj@codeaurora.org,
linux-mediatek@lists.infradead.org, ygardi@codeaurora.org,
matthias.bgg@gmail.com, Stanley Chu <stanley.chu@mediatek.com>,
linux-arm-kernel@lists.infradead.org, beanhuo@micron.com
Subject: [PATCH v2 2/4] scsi: ufs: Add fatal and auto-hibern8 error history
Date: Wed, 10 Jul 2019 13:20:15 +0800 [thread overview]
Message-ID: <1562736017-29461-3-git-send-email-stanley.chu@mediatek.com> (raw)
In-Reply-To: <1562736017-29461-1-git-send-email-stanley.chu@mediatek.com>
Provide more information of fatal errros and auto-hibern8 errors
to improve debugging by extending extend existed UFS error history
framework.
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Reviewed-by: Avri Altman <avri.altman@wdc.com>
---
drivers/scsi/ufs/ufshcd.c | 11 ++++++++++-
drivers/scsi/ufs/ufshcd.h | 10 +++++++++-
2 files changed, 19 insertions(+), 2 deletions(-)
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..c6ec5c749ceb 100644
--- a/drivers/scsi/ufs/ufshcd.h
+++ b/drivers/scsi/ufs/ufshcd.h
@@ -414,7 +414,7 @@ struct ufs_init_prefetch {
#define UFS_ERR_REG_HIST_LENGTH 8
/**
- * struct ufs_err_reg_hist - keeps history of uic errors
+ * struct ufs_err_reg_hist - keeps history of errors
* @pos: index to indicate cyclic buffer position
* @reg: cyclic buffer for registers value
* @tstamp: cyclic buffer for time stamp
@@ -436,15 +436,23 @@ struct ufs_err_reg_hist {
* @nl_err: tracks nl-uic errors
* @tl_err: tracks tl-uic errors
* @dme_err: tracks dme errors
+ * @fatal_err: tracks fatal errors
+ * @auto_hibern8_err: tracks auto-hibernate errors
*/
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
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next prev parent reply other threads:[~2019-07-10 5:20 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-10 5:20 [PATCH v2 0/4] scsi: ufs: Provide fatal and auto-hibern8 error history Stanley Chu
2019-07-10 5:20 ` [PATCH v2 1/4] scsi: ufs: Change names related to " Stanley Chu
2019-07-10 5:20 ` Stanley Chu [this message]
2019-07-10 5:20 ` [PATCH v2 3/4] scsi: ufs: Do not reset error history during host reset Stanley Chu
2019-07-10 5:20 ` [PATCH v2 4/4] scsi: ufs: Add history of fatal events Stanley Chu
2019-07-10 8:04 ` Avri Altman
2019-07-10 9:28 ` Stanley Chu
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