| Message ID | 1620885319-15151-3-git-send-email-cang@codeaurora.org |
|---|---|
| State | New |
| Headers | show |
| Series | Complementary changes for error handling | expand |
Please ignore this one - it is duplicated. On 2021-05-13 13:55, Can Guo wrote: > Put pm_op_in_progress and is_sys_suspend flags back to ufshcd hba pm > ops, > add two new flags, namely wl_pm_op_in_progress and is_wl_sys_suspended, > to > track the UFS device W-LU pm ops. This helps us differentiate the > status of > hba and wl pm ops when we need to do troubleshooting. > > Signed-off-by: Can Guo <cang@codeaurora.org> > --- > drivers/scsi/ufs/ufshcd.c | 42 > ++++++++++++++++++++++++++++-------------- > drivers/scsi/ufs/ufshcd.h | 4 +++- > 2 files changed, 31 insertions(+), 15 deletions(-) > > diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c > index ab707a2..c69602b 100644 > --- a/drivers/scsi/ufs/ufshcd.c > +++ b/drivers/scsi/ufs/ufshcd.c > @@ -543,7 +543,9 @@ static void ufshcd_print_host_state(struct ufs_hba > *hba) > hba->saved_err, hba->saved_uic_err); > dev_err(hba->dev, "Device power mode=%d, UIC link state=%d\n", > hba->curr_dev_pwr_mode, hba->uic_link_state); > - dev_err(hba->dev, "PM in progress=%d, sys. suspended=%d\n", > + dev_err(hba->dev, "wl_pm_op_in_progress=%d, > is_wl_sys_suspended=%d\n", > + hba->wl_pm_op_in_progress, hba->is_wl_sys_suspended); > + dev_err(hba->dev, "pm_op_in_progress=%d, is_sys_suspended=%d\n", > hba->pm_op_in_progress, hba->is_sys_suspended); > dev_err(hba->dev, "Auto BKOPS=%d, Host self-block=%d\n", > hba->auto_bkops_enabled, hba->host->host_self_blocked); > @@ -1991,7 +1993,7 @@ static void ufshcd_clk_scaling_start_busy(struct > ufs_hba *hba) > if (!hba->clk_scaling.active_reqs++) > queue_resume_work = true; > > - if (!hba->clk_scaling.is_enabled || hba->pm_op_in_progress) > + if (!hba->clk_scaling.is_enabled || hba->wl_pm_op_in_progress) > return; > > if (queue_resume_work) > @@ -2640,7 +2642,7 @@ static int ufshcd_queuecommand(struct Scsi_Host > *host, struct scsi_cmnd *cmd) > > lrbp = &hba->lrb[tag]; > if (unlikely(lrbp->in_use)) { > - if (hba->pm_op_in_progress) > + if (hba->wl_pm_op_in_progress) > set_host_byte(cmd, DID_BAD_TARGET); > else > err = SCSI_MLQUEUE_HOST_BUSY; > @@ -2687,7 +2689,7 @@ static int ufshcd_queuecommand(struct Scsi_Host > *host, struct scsi_cmnd *cmd) > * err handler blocked for too long. So, just fail the scsi cmd > * sent from PM ops, err handler can recover PM error anyways. > */ > - if (hba->pm_op_in_progress) { > + if (hba->wl_pm_op_in_progress) { > hba->force_reset = true; > set_host_byte(cmd, DID_BAD_TARGET); > goto out_compl_cmd; > @@ -5036,7 +5038,7 @@ ufshcd_transfer_rsp_status(struct ufs_hba *hba, > struct ufshcd_lrb *lrbp) > * solution could be to abort the system suspend if > * UFS device needs urgent BKOPs. > */ > - if (!hba->pm_op_in_progress && > + if (!hba->wl_pm_op_in_progress && > !ufshcd_eh_in_progress(hba) && > ufshcd_is_exception_event(lrbp->ucd_rsp_ptr)) > /* Flushed in suspend */ > @@ -5799,7 +5801,7 @@ static void ufshcd_err_handling_prepare(struct > ufs_hba *hba) > { > ufshcd_rpm_get_sync(hba); > if (pm_runtime_status_suspended(&hba->sdev_ufs_device->sdev_gendev) > || > - hba->is_sys_suspended) { > + hba->is_wl_sys_suspended) { > enum ufs_pm_op pm_op; > > /* > @@ -5816,7 +5818,7 @@ static void ufshcd_err_handling_prepare(struct > ufs_hba *hba) > if (!ufshcd_is_clkgating_allowed(hba)) > ufshcd_setup_clocks(hba, true); > ufshcd_release(hba); > - pm_op = hba->is_sys_suspended ? UFS_SYSTEM_PM : UFS_RUNTIME_PM; > + pm_op = hba->is_wl_sys_suspended ? UFS_SYSTEM_PM : UFS_RUNTIME_PM; > ufshcd_vops_resume(hba, pm_op); > } else { > ufshcd_hold(hba, false); > @@ -5859,7 +5861,7 @@ static void ufshcd_recover_pm_error(struct > ufs_hba *hba) > struct request_queue *q; > int ret; > > - hba->is_sys_suspended = false; > + hba->is_wl_sys_suspended = false; > /* > * Set RPM status of wlun device to RPM_ACTIVE, > * this also clears its runtime error. > @@ -8709,7 +8711,7 @@ static int __ufshcd_wl_suspend(struct ufs_hba > *hba, enum ufs_pm_op pm_op) > enum ufs_dev_pwr_mode req_dev_pwr_mode; > enum uic_link_state req_link_state; > > - hba->pm_op_in_progress = true; > + hba->wl_pm_op_in_progress = true; > if (!ufshcd_is_shutdown_pm(pm_op)) { > pm_lvl = ufshcd_is_runtime_pm(pm_op) ? > hba->rpm_lvl : hba->spm_lvl; > @@ -8844,7 +8846,7 @@ static int __ufshcd_wl_suspend(struct ufs_hba > *hba, enum ufs_pm_op pm_op) > hba->clk_gating.is_suspended = false; > ufshcd_release(hba); > } > - hba->pm_op_in_progress = false; > + hba->wl_pm_op_in_progress = false; > return ret; > } > > @@ -8853,7 +8855,7 @@ static int __ufshcd_wl_resume(struct ufs_hba > *hba, enum ufs_pm_op pm_op) > int ret; > enum uic_link_state old_link_state = hba->uic_link_state; > > - hba->pm_op_in_progress = true; > + hba->wl_pm_op_in_progress = true; > > /* > * Call vendor specific resume callback. As these callbacks may > access > @@ -8931,7 +8933,7 @@ static int __ufshcd_wl_resume(struct ufs_hba > *hba, enum ufs_pm_op pm_op) > ufshcd_update_evt_hist(hba, UFS_EVT_WL_RES_ERR, (u32)ret); > hba->clk_gating.is_suspended = false; > ufshcd_release(hba); > - hba->pm_op_in_progress = false; > + hba->wl_pm_op_in_progress = false; > return ret; > } > > @@ -8997,7 +8999,7 @@ static int ufshcd_wl_suspend(struct device *dev) > > out: > if (!ret) > - hba->is_sys_suspended = true; > + hba->is_wl_sys_suspended = true; > trace_ufshcd_wl_suspend(dev_name(dev), ret, > ktime_to_us(ktime_sub(ktime_get(), start)), > hba->curr_dev_pwr_mode, hba->uic_link_state); > @@ -9025,7 +9027,7 @@ static int ufshcd_wl_resume(struct device *dev) > ktime_to_us(ktime_sub(ktime_get(), start)), > hba->curr_dev_pwr_mode, hba->uic_link_state); > if (!ret) > - hba->is_sys_suspended = false; > + hba->is_wl_sys_suspended = false; > up(&hba->host_sem); > return ret; > } > @@ -9067,6 +9069,8 @@ static int ufshcd_suspend(struct ufs_hba *hba) > > if (!hba->is_powered) > return 0; > + > + hba->pm_op_in_progress = true; > /* > * Disable the host irq as host controller as there won't be any > * host controller transaction expected till resume. > @@ -9086,6 +9090,7 @@ static int ufshcd_suspend(struct ufs_hba *hba) > ufshcd_vreg_set_lpm(hba); > /* Put the host controller in low power mode if possible */ > ufshcd_hba_vreg_set_lpm(hba); > + hba->pm_op_in_progress = false; > return ret; > } > > @@ -9106,6 +9111,7 @@ static int ufshcd_resume(struct ufs_hba *hba) > if (!hba->is_powered) > return 0; > > + hba->pm_op_in_progress = true; > ufshcd_hba_vreg_set_hpm(hba); > ret = ufshcd_vreg_set_hpm(hba); > if (ret) > @@ -9125,6 +9131,7 @@ static int ufshcd_resume(struct ufs_hba *hba) > out: > if (ret) > ufshcd_update_evt_hist(hba, UFS_EVT_RESUME_ERR, (u32)ret); > + hba->pm_op_in_progress = false; > return ret; > } > > @@ -9150,6 +9157,10 @@ int ufshcd_system_suspend(struct ufs_hba *hba) > trace_ufshcd_system_suspend(dev_name(hba->dev), ret, > ktime_to_us(ktime_sub(ktime_get(), start)), > hba->curr_dev_pwr_mode, hba->uic_link_state); > + > + if (!ret) > + hba->is_sys_suspended = true; > + > return ret; > } > EXPORT_SYMBOL(ufshcd_system_suspend); > @@ -9176,6 +9187,9 @@ int ufshcd_system_resume(struct ufs_hba *hba) > ktime_to_us(ktime_sub(ktime_get(), start)), > hba->curr_dev_pwr_mode, hba->uic_link_state); > > + if (!ret) > + hba->is_sys_suspended = false; > + > return ret; > } > EXPORT_SYMBOL(ufshcd_system_resume); > diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h > index b8b4fe2..201dc49 100644 > --- a/drivers/scsi/ufs/ufshcd.h > +++ b/drivers/scsi/ufs/ufshcd.h > @@ -739,7 +739,8 @@ struct ufs_hba { > enum ufs_pm_level spm_lvl; > struct device_attribute rpm_lvl_attr; > struct device_attribute spm_lvl_attr; > - int pm_op_in_progress; > + bool pm_op_in_progress; > + bool wl_pm_op_in_progress; > > /* Auto-Hibernate Idle Timer register value */ > u32 ahit; > @@ -826,6 +827,7 @@ struct ufs_hba { > struct devfreq *devfreq; > struct ufs_clk_scaling clk_scaling; > bool is_sys_suspended; > + bool is_wl_sys_suspended; > > enum bkops_status urgent_bkops_lvl; > bool is_urgent_bkops_lvl_checked;
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c index ab707a2..c69602b 100644 --- a/drivers/scsi/ufs/ufshcd.c +++ b/drivers/scsi/ufs/ufshcd.c @@ -543,7 +543,9 @@ static void ufshcd_print_host_state(struct ufs_hba *hba) hba->saved_err, hba->saved_uic_err); dev_err(hba->dev, "Device power mode=%d, UIC link state=%d\n", hba->curr_dev_pwr_mode, hba->uic_link_state); - dev_err(hba->dev, "PM in progress=%d, sys. suspended=%d\n", + dev_err(hba->dev, "wl_pm_op_in_progress=%d, is_wl_sys_suspended=%d\n", + hba->wl_pm_op_in_progress, hba->is_wl_sys_suspended); + dev_err(hba->dev, "pm_op_in_progress=%d, is_sys_suspended=%d\n", hba->pm_op_in_progress, hba->is_sys_suspended); dev_err(hba->dev, "Auto BKOPS=%d, Host self-block=%d\n", hba->auto_bkops_enabled, hba->host->host_self_blocked); @@ -1991,7 +1993,7 @@ static void ufshcd_clk_scaling_start_busy(struct ufs_hba *hba) if (!hba->clk_scaling.active_reqs++) queue_resume_work = true; - if (!hba->clk_scaling.is_enabled || hba->pm_op_in_progress) + if (!hba->clk_scaling.is_enabled || hba->wl_pm_op_in_progress) return; if (queue_resume_work) @@ -2640,7 +2642,7 @@ static int ufshcd_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *cmd) lrbp = &hba->lrb[tag]; if (unlikely(lrbp->in_use)) { - if (hba->pm_op_in_progress) + if (hba->wl_pm_op_in_progress) set_host_byte(cmd, DID_BAD_TARGET); else err = SCSI_MLQUEUE_HOST_BUSY; @@ -2687,7 +2689,7 @@ static int ufshcd_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *cmd) * err handler blocked for too long. So, just fail the scsi cmd * sent from PM ops, err handler can recover PM error anyways. */ - if (hba->pm_op_in_progress) { + if (hba->wl_pm_op_in_progress) { hba->force_reset = true; set_host_byte(cmd, DID_BAD_TARGET); goto out_compl_cmd; @@ -5036,7 +5038,7 @@ ufshcd_transfer_rsp_status(struct ufs_hba *hba, struct ufshcd_lrb *lrbp) * solution could be to abort the system suspend if * UFS device needs urgent BKOPs. */ - if (!hba->pm_op_in_progress && + if (!hba->wl_pm_op_in_progress && !ufshcd_eh_in_progress(hba) && ufshcd_is_exception_event(lrbp->ucd_rsp_ptr)) /* Flushed in suspend */ @@ -5799,7 +5801,7 @@ static void ufshcd_err_handling_prepare(struct ufs_hba *hba) { ufshcd_rpm_get_sync(hba); if (pm_runtime_status_suspended(&hba->sdev_ufs_device->sdev_gendev) || - hba->is_sys_suspended) { + hba->is_wl_sys_suspended) { enum ufs_pm_op pm_op; /* @@ -5816,7 +5818,7 @@ static void ufshcd_err_handling_prepare(struct ufs_hba *hba) if (!ufshcd_is_clkgating_allowed(hba)) ufshcd_setup_clocks(hba, true); ufshcd_release(hba); - pm_op = hba->is_sys_suspended ? UFS_SYSTEM_PM : UFS_RUNTIME_PM; + pm_op = hba->is_wl_sys_suspended ? UFS_SYSTEM_PM : UFS_RUNTIME_PM; ufshcd_vops_resume(hba, pm_op); } else { ufshcd_hold(hba, false); @@ -5859,7 +5861,7 @@ static void ufshcd_recover_pm_error(struct ufs_hba *hba) struct request_queue *q; int ret; - hba->is_sys_suspended = false; + hba->is_wl_sys_suspended = false; /* * Set RPM status of wlun device to RPM_ACTIVE, * this also clears its runtime error. @@ -8709,7 +8711,7 @@ static int __ufshcd_wl_suspend(struct ufs_hba *hba, enum ufs_pm_op pm_op) enum ufs_dev_pwr_mode req_dev_pwr_mode; enum uic_link_state req_link_state; - hba->pm_op_in_progress = true; + hba->wl_pm_op_in_progress = true; if (!ufshcd_is_shutdown_pm(pm_op)) { pm_lvl = ufshcd_is_runtime_pm(pm_op) ? hba->rpm_lvl : hba->spm_lvl; @@ -8844,7 +8846,7 @@ static int __ufshcd_wl_suspend(struct ufs_hba *hba, enum ufs_pm_op pm_op) hba->clk_gating.is_suspended = false; ufshcd_release(hba); } - hba->pm_op_in_progress = false; + hba->wl_pm_op_in_progress = false; return ret; } @@ -8853,7 +8855,7 @@ static int __ufshcd_wl_resume(struct ufs_hba *hba, enum ufs_pm_op pm_op) int ret; enum uic_link_state old_link_state = hba->uic_link_state; - hba->pm_op_in_progress = true; + hba->wl_pm_op_in_progress = true; /* * Call vendor specific resume callback. As these callbacks may access @@ -8931,7 +8933,7 @@ static int __ufshcd_wl_resume(struct ufs_hba *hba, enum ufs_pm_op pm_op) ufshcd_update_evt_hist(hba, UFS_EVT_WL_RES_ERR, (u32)ret); hba->clk_gating.is_suspended = false; ufshcd_release(hba); - hba->pm_op_in_progress = false; + hba->wl_pm_op_in_progress = false; return ret; } @@ -8997,7 +8999,7 @@ static int ufshcd_wl_suspend(struct device *dev) out: if (!ret) - hba->is_sys_suspended = true; + hba->is_wl_sys_suspended = true; trace_ufshcd_wl_suspend(dev_name(dev), ret, ktime_to_us(ktime_sub(ktime_get(), start)), hba->curr_dev_pwr_mode, hba->uic_link_state); @@ -9025,7 +9027,7 @@ static int ufshcd_wl_resume(struct device *dev) ktime_to_us(ktime_sub(ktime_get(), start)), hba->curr_dev_pwr_mode, hba->uic_link_state); if (!ret) - hba->is_sys_suspended = false; + hba->is_wl_sys_suspended = false; up(&hba->host_sem); return ret; } @@ -9067,6 +9069,8 @@ static int ufshcd_suspend(struct ufs_hba *hba) if (!hba->is_powered) return 0; + + hba->pm_op_in_progress = true; /* * Disable the host irq as host controller as there won't be any * host controller transaction expected till resume. @@ -9086,6 +9090,7 @@ static int ufshcd_suspend(struct ufs_hba *hba) ufshcd_vreg_set_lpm(hba); /* Put the host controller in low power mode if possible */ ufshcd_hba_vreg_set_lpm(hba); + hba->pm_op_in_progress = false; return ret; } @@ -9106,6 +9111,7 @@ static int ufshcd_resume(struct ufs_hba *hba) if (!hba->is_powered) return 0; + hba->pm_op_in_progress = true; ufshcd_hba_vreg_set_hpm(hba); ret = ufshcd_vreg_set_hpm(hba); if (ret) @@ -9125,6 +9131,7 @@ static int ufshcd_resume(struct ufs_hba *hba) out: if (ret) ufshcd_update_evt_hist(hba, UFS_EVT_RESUME_ERR, (u32)ret); + hba->pm_op_in_progress = false; return ret; } @@ -9150,6 +9157,10 @@ int ufshcd_system_suspend(struct ufs_hba *hba) trace_ufshcd_system_suspend(dev_name(hba->dev), ret, ktime_to_us(ktime_sub(ktime_get(), start)), hba->curr_dev_pwr_mode, hba->uic_link_state); + + if (!ret) + hba->is_sys_suspended = true; + return ret; } EXPORT_SYMBOL(ufshcd_system_suspend); @@ -9176,6 +9187,9 @@ int ufshcd_system_resume(struct ufs_hba *hba) ktime_to_us(ktime_sub(ktime_get(), start)), hba->curr_dev_pwr_mode, hba->uic_link_state); + if (!ret) + hba->is_sys_suspended = false; + return ret; } EXPORT_SYMBOL(ufshcd_system_resume); diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h index b8b4fe2..201dc49 100644 --- a/drivers/scsi/ufs/ufshcd.h +++ b/drivers/scsi/ufs/ufshcd.h @@ -739,7 +739,8 @@ struct ufs_hba { enum ufs_pm_level spm_lvl; struct device_attribute rpm_lvl_attr; struct device_attribute spm_lvl_attr; - int pm_op_in_progress; + bool pm_op_in_progress; + bool wl_pm_op_in_progress; /* Auto-Hibernate Idle Timer register value */ u32 ahit; @@ -826,6 +827,7 @@ struct ufs_hba { struct devfreq *devfreq; struct ufs_clk_scaling clk_scaling; bool is_sys_suspended; + bool is_wl_sys_suspended; enum bkops_status urgent_bkops_lvl; bool is_urgent_bkops_lvl_checked;
Put pm_op_in_progress and is_sys_suspend flags back to ufshcd hba pm ops, add two new flags, namely wl_pm_op_in_progress and is_wl_sys_suspended, to track the UFS device W-LU pm ops. This helps us differentiate the status of hba and wl pm ops when we need to do troubleshooting. Signed-off-by: Can Guo <cang@codeaurora.org> --- drivers/scsi/ufs/ufshcd.c | 42 ++++++++++++++++++++++++++++-------------- drivers/scsi/ufs/ufshcd.h | 4 +++- 2 files changed, 31 insertions(+), 15 deletions(-)