From d3c615bf586f2796f24097bfa13386effaa4bf3e Mon Sep 17 00:00:00 2001 From: Stanley Chu Date: Wed, 10 Jul 2019 21:38:19 +0800 Subject: [PATCH] scsi: ufs: Add fatal and auto-hibern8 error history Provide more information about fatal and auto-hibern8 errors to improve debugging by extending existing UFS error history framework. [mkp: typos] Signed-off-by: Stanley Chu Reviewed-by: Avri Altman Signed-off-by: Martin K. Petersen --- 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 3865ba9886c2..46815e704396 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); @@ -5439,8 +5442,10 @@ 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; @@ -5455,6 +5460,8 @@ 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; } @@ -6692,6 +6699,8 @@ 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; }; /**