From patchwork Wed May 10 05:24:28 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Bao D. Nguyen" X-Patchwork-Id: 681759 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 62E9AC77B7C for ; Wed, 10 May 2023 05:27:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235883AbjEJF1Z (ORCPT ); Wed, 10 May 2023 01:27:25 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38106 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235606AbjEJF1V (ORCPT ); Wed, 10 May 2023 01:27:21 -0400 Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 084E81FEF; Tue, 9 May 2023 22:27:10 -0700 (PDT) Received: from pps.filterd (m0279864.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 34A2HR7d020674; Wed, 10 May 2023 05:26:57 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-type; s=qcppdkim1; bh=2eGlXlvn5UzqxcldaXw0YYLt5bMTRsK+KHOAM3hK55Y=; b=M31Dte0CUiCc1VEdtRH/YgXksCmY5GDg/JkWgtd2eC/ZzHKVekpJXp0KhhBJccXMKl6P YU1t1KMxWLAI1iHdGvG3Zma6NPvpgchKajzOHHV+l8T7VvpHRrKUxY1gtfBWsdxV/De7 XqrwhwGQSkBUE/pY8A3YcHUq4cKlGjGzXzXgjcm+Oe2PX/hKRoHJj59Cc6yXuEZH1kjK lrxSLekI4he6CrCjicOtZXTIa7ouER5OAwYZNu+myoYASkw7L/t5ZTk3s/Xu8WU7VJk1 Y8PXbLqu7tJsnvHvD96keEsYdEWm7afJ/kPPOFA05TbtKyPCksNIGhL4Y2iPbDZ4xtqD 7w== Received: from nasanppmta05.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3qfr509h1h-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 10 May 2023 05:26:57 +0000 Received: from nasanex01a.na.qualcomm.com (nasanex01a.na.qualcomm.com [10.52.223.231]) by NASANPPMTA05.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 34A5Qudq023106 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 10 May 2023 05:26:56 GMT Received: from stor-berry.qualcomm.com (10.80.80.8) by nasanex01a.na.qualcomm.com (10.52.223.231) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.42; Tue, 9 May 2023 22:26:56 -0700 From: "Bao D. Nguyen" To: , , , , , , , , CC: , "Bao D. Nguyen" , Alim Akhtar , "James E.J. Bottomley" , open list Subject: [PATCH v3 7/7] ufs: core: Add error handling for MCQ mode Date: Tue, 9 May 2023 22:24:28 -0700 Message-ID: <09428bd2ee5f9c832046142c9c6d13efebab8887.1683688693.git.quic_nguyenb@quicinc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: References: MIME-Version: 1.0 X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01b.na.qualcomm.com (10.46.141.250) To nasanex01a.na.qualcomm.com (10.52.223.231) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: yWJmVWtvnAU3Ev08Ury2ajigfNMxVeFT X-Proofpoint-ORIG-GUID: yWJmVWtvnAU3Ev08Ury2ajigfNMxVeFT X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.254,Aquarius:18.0.942,Hydra:6.0.573,FMLib:17.11.170.22 definitions=2023-05-10_02,2023-05-05_01,2023-02-09_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 priorityscore=1501 mlxscore=0 mlxlogscore=999 bulkscore=0 lowpriorityscore=0 malwarescore=0 clxscore=1015 impostorscore=0 adultscore=0 phishscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2304280000 definitions=main-2305100042 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org Add support for error handling for MCQ mode. Signed-off-by: Bao D. Nguyen --- drivers/ufs/core/ufshcd.c | 85 +++++++++++++++++++++++++++++++++++++++++------ 1 file changed, 74 insertions(+), 11 deletions(-) diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c index 5e3029ed..0c6dec67 100644 --- a/drivers/ufs/core/ufshcd.c +++ b/drivers/ufs/core/ufshcd.c @@ -3148,6 +3148,16 @@ static int ufshcd_wait_for_dev_cmd(struct ufs_hba *hba, err = -ETIMEDOUT; dev_dbg(hba->dev, "%s: dev_cmd request timedout, tag %d\n", __func__, lrbp->task_tag); + + /* MCQ mode */ + if (is_mcq_enabled(hba)) { + err = ufshcd_clear_cmds(hba, lrbp->task_tag); + if (!err) + hba->dev_cmd.complete = NULL; + return err; + } + + /* SDB mode */ if (ufshcd_clear_cmds(hba, lrbp->task_tag) == 0) { /* successfully cleared the command, retry if needed */ err = -EAGAIN; @@ -5581,6 +5591,10 @@ static int ufshcd_poll(struct Scsi_Host *shost, unsigned int queue_num) */ static irqreturn_t ufshcd_transfer_req_compl(struct ufs_hba *hba) { + struct ufshcd_lrb *lrbp; + u32 hwq_num, utag; + int tag; + /* Resetting interrupt aggregation counters first and reading the * DOOR_BELL afterward allows us to handle all the completed requests. * In order to prevent other interrupts starvation the DB is read once @@ -5599,7 +5613,22 @@ static irqreturn_t ufshcd_transfer_req_compl(struct ufs_hba *hba) * Ignore the ufshcd_poll() return value and return IRQ_HANDLED since we * do not want polling to trigger spurious interrupt complaints. */ - ufshcd_poll(hba->host, UFSHCD_POLL_FROM_INTERRUPT_CONTEXT); + if (!is_mcq_enabled(hba)) { + ufshcd_poll(hba->host, UFSHCD_POLL_FROM_INTERRUPT_CONTEXT); + goto out; + } + + /* MCQ mode */ + for (tag = 0; tag < hba->nutrs; tag++) { + lrbp = &hba->lrb[tag]; + if (ufshcd_cmd_inflight(lrbp->cmd)) { + utag = blk_mq_unique_tag(scsi_cmd_to_rq(lrbp->cmd)); + hwq_num = blk_mq_unique_tag_to_hwq(utag); + ufshcd_poll(hba->host, hwq_num); + } + } + +out: return IRQ_HANDLED; } @@ -6378,18 +6407,36 @@ static bool ufshcd_abort_all(struct ufs_hba *hba) bool needs_reset = false; int tag, ret; - /* Clear pending transfer requests */ - for_each_set_bit(tag, &hba->outstanding_reqs, hba->nutrs) { - ret = ufshcd_try_to_abort_task(hba, tag); - dev_err(hba->dev, "Aborting tag %d / CDB %#02x %s\n", tag, - hba->lrb[tag].cmd ? hba->lrb[tag].cmd->cmnd[0] : -1, - ret ? "failed" : "succeeded"); - if (ret) { - needs_reset = true; - goto out; + if (is_mcq_enabled(hba)) { + struct ufshcd_lrb *lrbp; + int tag; + + for (tag = 0; tag < hba->nutrs; tag++) { + lrbp = &hba->lrb[tag]; + if (!ufshcd_cmd_inflight(lrbp->cmd)) + continue; + ret = ufshcd_try_to_abort_task(hba, tag); + dev_err(hba->dev, "Aborting tag %d / CDB %#02x %s\n", tag, + hba->lrb[tag].cmd ? hba->lrb[tag].cmd->cmnd[0] : -1, + ret ? "failed" : "succeeded"); + if (ret) { + needs_reset = true; + goto out; + } + } + } else { + /* Clear pending transfer requests */ + for_each_set_bit(tag, &hba->outstanding_reqs, hba->nutrs) { + ret = ufshcd_try_to_abort_task(hba, tag); + dev_err(hba->dev, "Aborting tag %d / CDB %#02x %s\n", tag, + hba->lrb[tag].cmd ? hba->lrb[tag].cmd->cmnd[0] : -1, + ret ? "failed" : "succeeded"); + if (ret) { + needs_reset = true; + goto out; + } } } - /* Clear pending task management requests */ for_each_set_bit(tag, &hba->outstanding_tasks, hba->nutmrs) { if (ufshcd_clear_tm_cmd(hba, tag)) { @@ -7321,6 +7368,8 @@ static int ufshcd_eh_device_reset_handler(struct scsi_cmnd *cmd) unsigned long flags, pending_reqs = 0, not_cleared = 0; struct Scsi_Host *host; struct ufs_hba *hba; + struct ufs_hw_queue *hwq; + struct ufshcd_lrb *lrbp; u32 pos, not_cleared_mask = 0; int err; u8 resp = 0xF, lun; @@ -7336,6 +7385,20 @@ static int ufshcd_eh_device_reset_handler(struct scsi_cmnd *cmd) goto out; } + if (is_mcq_enabled(hba)) { + for (pos = 0; pos < hba->nutrs; pos++) { + lrbp = &hba->lrb[pos]; + if (ufshcd_cmd_inflight(lrbp->cmd) && + lrbp->lun == lun) { + ufshcd_clear_cmds(hba, pos); + hwq = ufshcd_mcq_req_to_hwq(hba, scsi_cmd_to_rq(lrbp->cmd)); + ufshcd_mcq_poll_cqe_lock(hba, hwq); + } + } + err = 0; + goto out; + } + /* clear the commands that were pending for corresponding LUN */ spin_lock_irqsave(&hba->outstanding_lock, flags); for_each_set_bit(pos, &hba->outstanding_reqs, hba->nutrs)