From patchwork Thu May 13 05:55:14 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Can Guo X-Patchwork-Id: 12255173 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 57576C433ED for ; Thu, 13 May 2021 05:55:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2BABD61019 for ; Thu, 13 May 2021 05:55:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231243AbhEMF44 (ORCPT ); Thu, 13 May 2021 01:56:56 -0400 Received: from labrats.qualcomm.com ([199.106.110.90]:35000 "EHLO labrats.qualcomm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229935AbhEMF4z (ORCPT ); Thu, 13 May 2021 01:56:55 -0400 IronPort-SDR: JOcm2tonOhdQv+oTR2A8wHjCK7wnPCEfJWmCf6RgT+TVk1XWDi1Heau4CkTEO3GDgPg5Okd4qQ fVK68wH8XenVI/wLZs3Y+jNlcNzXOTGcAcoJVretcmB7RvWfiijM1PZJ2KzcS8Tp5yzN0ZGzZB p5Wm1IKaXvaDOjehhOfuZbSGARhVamkRR4eDefYQHNmtPvoNB6EBZ6+CzpsQaXfnkv17U6fiQI 3l1trb7MtRLWx9pSEUB5mfQloxCyJAEfBkKqzQFD82s9Yz48YwW11chExS3aey/CZ/SnPJs1vx q1Y= X-IronPort-AV: E=Sophos;i="5.82,296,1613462400"; d="scan'208";a="29767595" Received: from unknown (HELO ironmsg05-sd.qualcomm.com) ([10.53.140.145]) by labrats.qualcomm.com with ESMTP; 12 May 2021 22:55:46 -0700 X-QCInternal: smtphost Received: from wsp769891wss.qualcomm.com (HELO stor-presley.qualcomm.com) ([192.168.140.85]) by ironmsg05-sd.qualcomm.com with ESMTP; 12 May 2021 22:55:45 -0700 Received: by stor-presley.qualcomm.com (Postfix, from userid 359480) id 7DAF521A85; Wed, 12 May 2021 22:55:45 -0700 (PDT) From: Can Guo To: asutoshd@codeaurora.org, nguyenb@codeaurora.org, hongwus@codeaurora.org, ziqichen@codeaurora.org, linux-scsi@vger.kernel.org, kernel-team@android.com, cang@codeaurora.org Cc: Alim Akhtar , Avri Altman , "James E.J. Bottomley" , "Martin K. Petersen" , Stanley Chu , Bean Huo , Jaegeuk Kim , Adrian Hunter , Kiwoong Kim , Satya Tangirala , linux-kernel@vger.kernel.org (open list) Subject: [PATCH v1 1/6] scsi: ufs: Differentiate status of hba and wl pm ops Date: Wed, 12 May 2021 22:55:14 -0700 Message-Id: <1620885319-15151-3-git-send-email-cang@codeaurora.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1620885319-15151-1-git-send-email-cang@codeaurora.org> References: <1620885319-15151-1-git-send-email-cang@codeaurora.org> Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org 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 --- 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;