UFS has many functions to print different types of debugging information. Some information is helpful for vendor drivers and can be dumped if something wrong in vendor-specific flows.
To have minimum and most simple exported interface for vendor drivers, create a single and unified entrance to most debugging functions, and then export the entry function. Signed-off-by: Stanley Chu <[email protected]> --- drivers/scsi/ufs/ufshcd.c | 49 +++++++++++++++++++++++---------------- drivers/scsi/ufs/ufshcd.h | 8 +++++++ 2 files changed, 37 insertions(+), 20 deletions(-) diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c index 152ae7f5ae86..5158c496cf95 100644 --- a/drivers/scsi/ufs/ufshcd.c +++ b/drivers/scsi/ufs/ufshcd.c @@ -573,6 +573,19 @@ static void ufshcd_print_pwr_info(struct ufs_hba *hba) hba->pwr_info.hs_rate); } +void ufshcd_print_info(struct ufs_hba *hba, enum ufs_info_item flags) +{ + if (flags & UFS_INFO_HOST_STATE) + ufshcd_print_host_state(hba); + if (flags & UFS_INFO_HOST_REGS) + ufshcd_print_host_regs(hba); + if (flags & UFS_INFO_PWR) + ufshcd_print_pwr_info(hba); + if (flags & UFS_INFO_TMRS) + ufshcd_print_tmrs(hba, hba->outstanding_tasks); +} +EXPORT_SYMBOL_GPL(ufshcd_print_info); + void ufshcd_delay_us(unsigned long us, unsigned long tolerance) { if (!us) @@ -3783,11 +3796,9 @@ static int ufshcd_uic_pwr_ctrl(struct ufs_hba *hba, struct uic_command *cmd) ret = (status != PWR_OK) ? status : -1; } out: - if (ret) { - ufshcd_print_host_state(hba); - ufshcd_print_pwr_info(hba); - ufshcd_print_host_regs(hba); - } + if (ret) + ufshcd_print_info(hba, UFS_INFO_HOST_STATE | + UFS_INFO_HOST_REGS | UFS_INFO_PWR); spin_lock_irqsave(hba->host->host_lock, flags); hba->active_uic_cmd = NULL; @@ -4454,7 +4465,7 @@ static int ufshcd_link_startup(struct ufs_hba *hba) /* Mark that link is up in PWM-G1, 1-lane, SLOW-AUTO mode */ ufshcd_init_pwr_info(hba); - ufshcd_print_pwr_info(hba); + ufshcd_print_info(hba, UFS_INFO_PWR); if (hba->quirks & UFSHCD_QUIRK_BROKEN_LCC) { ret = ufshcd_disable_device_tx_lcc(hba); @@ -4471,9 +4482,8 @@ static int ufshcd_link_startup(struct ufs_hba *hba) out: if (ret) { dev_err(hba->dev, "link startup failed %d\n", ret); - ufshcd_print_host_state(hba); - ufshcd_print_pwr_info(hba); - ufshcd_print_host_regs(hba); + ufshcd_print_info(hba, UFS_INFO_HOST_STATE | + UFS_INFO_HOST_REGS | UFS_INFO_PWR); } return ret; } @@ -4817,8 +4827,8 @@ ufshcd_transfer_rsp_status(struct ufs_hba *hba, struct ufshcd_lrb *lrbp) dev_err(hba->dev, "OCS error from controller = %x for tag %d\n", ocs, lrbp->task_tag); - ufshcd_print_host_regs(hba); - ufshcd_print_host_state(hba); + ufshcd_print_info(hba, UFS_INFO_HOST_STATE | + UFS_INFO_HOST_REGS); break; } /* end of switch */ @@ -5801,9 +5811,9 @@ static irqreturn_t ufshcd_check_errors(struct ufs_hba *hba) __func__, hba->saved_err, hba->saved_uic_err); - ufshcd_print_host_regs(hba); - ufshcd_print_pwr_info(hba); - ufshcd_print_tmrs(hba, hba->outstanding_tasks); + ufshcd_print_info(hba, UFS_INFO_HOST_REGS | + UFS_INFO_PWR | + UFS_INFO_TMRS); ufshcd_print_trs(hba, hba->outstanding_reqs, pr_prdt); } @@ -6416,9 +6426,8 @@ static int ufshcd_abort(struct scsi_cmnd *cmd) scsi_print_command(hba->lrb[tag].cmd); if (!hba->req_abort_count) { ufshcd_update_reg_hist(&hba->ufs_stats.task_abort, 0); - ufshcd_print_host_regs(hba); - ufshcd_print_host_state(hba); - ufshcd_print_pwr_info(hba); + ufshcd_print_info(hba, UFS_INFO_HOST_STATE | + UFS_INFO_HOST_REGS | UFS_INFO_PWR); ufshcd_print_trs(hba, 1 << tag, true); } else { ufshcd_print_trs(hba, 1 << tag, false); @@ -7444,7 +7453,7 @@ static int ufshcd_probe_hba(struct ufs_hba *hba, bool async) __func__, ret); goto out; } - ufshcd_print_pwr_info(hba); + ufshcd_print_info(hba, UFS_INFO_PWR); } /* @@ -8897,8 +8906,8 @@ int ufshcd_init(struct ufs_hba *hba, void __iomem *mmio_base, unsigned int irq) err = ufshcd_hba_enable(hba); if (err) { dev_err(hba->dev, "Host controller enable failed\n"); - ufshcd_print_host_regs(hba); - ufshcd_print_host_state(hba); + ufshcd_print_info(hba, UFS_INFO_HOST_STATE | + UFS_INFO_HOST_REGS); goto free_tmf_queue; } diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h index 7fa35c78342b..3450d9589602 100644 --- a/drivers/scsi/ufs/ufshcd.h +++ b/drivers/scsi/ufs/ufshcd.h @@ -817,6 +817,13 @@ static inline void ufshcd_rmwl(struct ufs_hba *hba, u32 mask, u32 val, u32 reg) ufshcd_writel(hba, tmp, reg); } +enum ufs_info_item { + UFS_INFO_HOST_STATE = (1 << 0), + UFS_INFO_HOST_REGS = (1 << 1), + UFS_INFO_PWR = (1 << 2), + UFS_INFO_TMRS = (1 << 3) +}; + int ufshcd_alloc_host(struct device *, struct ufs_hba **); void ufshcd_dealloc_host(struct ufs_hba *); int ufshcd_hba_enable(struct ufs_hba *hba); @@ -826,6 +833,7 @@ int ufshcd_make_hba_operational(struct ufs_hba *hba); void ufshcd_remove(struct ufs_hba *); int ufshcd_uic_hibern8_exit(struct ufs_hba *hba); void ufshcd_delay_us(unsigned long us, unsigned long tolerance); +void ufshcd_print_info(struct ufs_hba *hba, enum ufs_info_item flags); int ufshcd_wait_for_register(struct ufs_hba *hba, u32 reg, u32 mask, u32 val, unsigned long interval_us, unsigned long timeout_ms); -- 2.18.0
