From patchwork Thu Oct 20 18:03:40 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Asutosh Das X-Patchwork-Id: 13013899 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 C55D2C43217 for ; Thu, 20 Oct 2022 18:07:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230156AbiJTSHH (ORCPT ); Thu, 20 Oct 2022 14:07:07 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54294 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230230AbiJTSGw (ORCPT ); Thu, 20 Oct 2022 14:06:52 -0400 Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 239941805BE; Thu, 20 Oct 2022 11:06:51 -0700 (PDT) Received: from pps.filterd (m0279867.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.5/8.17.1.5) with ESMTP id 29KDHFG3024735; Thu, 20 Oct 2022 18:06:37 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=HjLRilSm+55GCVN0OtnfpHkw+m/9s2L8bdF9H9NZA2Y=; b=j8JLO2/OIGy8wjzGW1LjlQTwT4RukePBccmav+OySVhuI71PvkjNf6AR5rVsyhfGfftJ 70T/vVorWGfeavyjW5n4wY2/c4A2fffbmrlP3Yuw94iXKh2c8sNYQg8Z+9iWmgZ93/wn V2pzSkks71ViapWrl+elVGPOIsdw6xFDYJWqmfQbxlAO/hfeDjXtfaDdnYZdoT4YWpvs /9HsCKDEwdfp8V8zjmlV4yyXvF42LFmZ8YXsBNQbP9ctqFQsfJd+2k8JcOxaqI41Sl4L eKFtjegwFPI2POHhnT5rkxd11UEYd9K+9pyELcftF72711/YCs+0+aVEMh6B4zmDitCe 7g== Received: from nasanppmta05.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3kavq1ae7r-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 20 Oct 2022 18:06:37 +0000 Received: from nasanex01a.na.qualcomm.com ([10.52.223.231]) by NASANPPMTA05.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 29KI6apx023203 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 20 Oct 2022 18:06:36 GMT Received: from asutoshd-linux1.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 15.2.986.29; Thu, 20 Oct 2022 11:06:36 -0700 From: Asutosh Das To: , , CC: , , , , , , , , , , "Asutosh Das" , , Alim Akhtar , "James E.J. Bottomley" , Krzysztof Kozlowski , open list Subject: [PATCH v3 11/17] ufs: core: Prepare ufshcd_send_command for mcq Date: Thu, 20 Oct 2022 11:03:40 -0700 Message-ID: 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: nasanex01a.na.qualcomm.com (10.52.223.231) 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: Mu7Q0rUsDkcOSZdhskMncJliVZc_yTwt X-Proofpoint-ORIG-GUID: Mu7Q0rUsDkcOSZdhskMncJliVZc_yTwt X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.895,Hydra:6.0.545,FMLib:17.11.122.1 definitions=2022-10-20_09,2022-10-20_01,2022-06-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 bulkscore=0 adultscore=0 mlxlogscore=999 suspectscore=0 phishscore=0 clxscore=1015 priorityscore=1501 malwarescore=0 spamscore=0 lowpriorityscore=0 mlxscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2209130000 definitions=main-2210200108 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Add support to send commands using multiple submission queues in MCQ mode. Modify the functions that use ufshcd_send_command(). Co-developed-by: Can Guo Signed-off-by: Can Guo Signed-off-by: Asutosh Das Reviewed-by: Bart Van Assche --- drivers/ufs/core/ufs-mcq.c | 1 + drivers/ufs/core/ufshcd-priv.h | 10 ++++++++++ drivers/ufs/core/ufshcd.c | 36 ++++++++++++++++++++++++++---------- include/ufs/ufshcd.h | 5 +++++ 4 files changed, 42 insertions(+), 10 deletions(-) diff --git a/drivers/ufs/core/ufs-mcq.c b/drivers/ufs/core/ufs-mcq.c index 10a50eb..aed6272 100644 --- a/drivers/ufs/core/ufs-mcq.c +++ b/drivers/ufs/core/ufs-mcq.c @@ -394,6 +394,7 @@ int ufshcd_mcq_init(struct ufs_hba *hba) for (i = 0; i < hba->nr_hw_queues; i++) { hwq = &hba->uhq[i]; hwq->max_entries = hba->nutrs; + spin_lock_init(&hwq->sq_lock); } /* The very first HW queue is to serve device command */ diff --git a/drivers/ufs/core/ufshcd-priv.h b/drivers/ufs/core/ufshcd-priv.h index 01026e3..7df2d92 100644 --- a/drivers/ufs/core/ufshcd-priv.h +++ b/drivers/ufs/core/ufshcd-priv.h @@ -317,4 +317,14 @@ static inline bool ufs_is_valid_unit_desc_lun(struct ufs_dev_info *dev_info, return lun == UFS_UPIU_RPMB_WLUN || (lun < dev_info->max_lu_supported); } +static inline void ufshcd_inc_sq_tail(struct ufs_hw_queue *q) +{ + u32 mask = q->max_entries - 1; + u32 val; + + q->sq_tail_slot = (q->sq_tail_slot + 1) & mask; + val = q->sq_tail_slot * sizeof(struct utp_transfer_req_desc); + writel(val, q->mcq_sq_tail); +} + #endif /* _UFSHCD_PRIV_H_ */ diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c index 87201dd..ba19e12 100644 --- a/drivers/ufs/core/ufshcd.c +++ b/drivers/ufs/core/ufshcd.c @@ -2149,9 +2149,11 @@ static void ufshcd_update_monitor(struct ufs_hba *hba, const struct ufshcd_lrb * * ufshcd_send_command - Send SCSI or device management commands * @hba: per adapter instance * @task_tag: Task tag of the command + * @hwq: pointer to hardware queue instance */ static inline -void ufshcd_send_command(struct ufs_hba *hba, unsigned int task_tag) +void ufshcd_send_command(struct ufs_hba *hba, unsigned int task_tag, + struct ufs_hw_queue *hwq) { struct ufshcd_lrb *lrbp = &hba->lrb[task_tag]; unsigned long flags; @@ -2163,12 +2165,24 @@ void ufshcd_send_command(struct ufs_hba *hba, unsigned int task_tag) if (unlikely(ufshcd_should_inform_monitor(hba, lrbp))) ufshcd_start_monitor(hba, lrbp); - spin_lock_irqsave(&hba->outstanding_lock, flags); - if (hba->vops && hba->vops->setup_xfer_req) - hba->vops->setup_xfer_req(hba, task_tag, !!lrbp->cmd); - __set_bit(task_tag, &hba->outstanding_reqs); - ufshcd_writel(hba, 1 << task_tag, REG_UTP_TRANSFER_REQ_DOOR_BELL); - spin_unlock_irqrestore(&hba->outstanding_lock, flags); + if (is_mcq_enabled(hba)) { + int utrd_size = sizeof(struct utp_transfer_req_desc); + + spin_lock(&hwq->sq_lock); + memcpy(hwq->sqe_base_addr + (hwq->sq_tail_slot * utrd_size), + lrbp->utr_descriptor_ptr, utrd_size); + ufshcd_inc_sq_tail(hwq); + spin_unlock(&hwq->sq_lock); + } else { + spin_lock_irqsave(&hba->outstanding_lock, flags); + if (hba->vops && hba->vops->setup_xfer_req) + hba->vops->setup_xfer_req(hba, lrbp->task_tag, + !!lrbp->cmd); + __set_bit(lrbp->task_tag, &hba->outstanding_reqs); + ufshcd_writel(hba, 1 << lrbp->task_tag, + REG_UTP_TRANSFER_REQ_DOOR_BELL); + spin_unlock_irqrestore(&hba->outstanding_lock, flags); + } } /** @@ -2789,6 +2803,7 @@ static int ufshcd_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *cmd) int tag = scsi_cmd_to_rq(cmd)->tag; struct ufshcd_lrb *lrbp; int err = 0; + struct ufs_hw_queue *hwq = NULL; WARN_ONCE(tag < 0 || tag >= hba->nutrs, "Invalid tag %d\n", tag); @@ -2873,7 +2888,7 @@ static int ufshcd_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *cmd) goto out; } - ufshcd_send_command(hba, tag); + ufshcd_send_command(hba, tag, hwq); out: rcu_read_unlock(); @@ -3046,10 +3061,11 @@ static int ufshcd_exec_dev_cmd(struct ufs_hba *hba, goto out; hba->dev_cmd.complete = &wait; + hba->dev_cmd.cqe = NULL; ufshcd_add_query_upiu_trace(hba, UFS_QUERY_SEND, lrbp->ucd_req_ptr); - ufshcd_send_command(hba, tag); + ufshcd_send_command(hba, tag, hba->dev_cmd_queue); err = ufshcd_wait_for_dev_cmd(hba, lrbp, timeout); ufshcd_add_query_upiu_trace(hba, err ? UFS_QUERY_ERR : UFS_QUERY_COMP, (struct utp_upiu_req *)lrbp->ucd_rsp_ptr); @@ -6904,7 +6920,7 @@ static int ufshcd_issue_devman_upiu_cmd(struct ufs_hba *hba, ufshcd_add_query_upiu_trace(hba, UFS_QUERY_SEND, lrbp->ucd_req_ptr); - ufshcd_send_command(hba, tag); + ufshcd_send_command(hba, tag, hba->dev_cmd_queue); /* * ignore the returning value here - ufshcd_check_query_response is * bound to fail since dev_cmd.query and dev_cmd.type were left empty. diff --git a/include/ufs/ufshcd.h b/include/ufs/ufshcd.h index 511f1dc..2c572ff 100644 --- a/include/ufs/ufshcd.h +++ b/include/ufs/ufshcd.h @@ -218,6 +218,7 @@ struct ufs_dev_cmd { struct mutex lock; struct completion *complete; struct ufs_query query; + struct cq_entry *cqe; }; /** @@ -1054,6 +1055,8 @@ struct ufs_hba { * @cqe_dma_addr: completion queue dma address * @max_entries: max number of slots in this hardware queue * @id: hardware queue ID + * @sq_tp_slot: current slot to which SQ tail pointer is pointing + * @sq_lock: serialize submission queue access */ struct ufs_hw_queue { void __iomem *mcq_sq_head; @@ -1067,6 +1070,8 @@ struct ufs_hw_queue { dma_addr_t cqe_dma_addr; u32 max_entries; u32 id; + u32 sq_tail_slot; + spinlock_t sq_lock; }; static inline bool is_mcq_enabled(struct ufs_hba *hba)