From patchwork Wed Dec 7 20:46:24 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Asutosh Das X-Patchwork-Id: 13067616 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 D3A74C4708D for ; Wed, 7 Dec 2022 20:50:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229732AbiLGUuN (ORCPT ); Wed, 7 Dec 2022 15:50:13 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33256 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230081AbiLGUtP (ORCPT ); Wed, 7 Dec 2022 15:49:15 -0500 Received: from alexa-out-sd-02.qualcomm.com (alexa-out-sd-02.qualcomm.com [199.106.114.39]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4DA2A81D9F; Wed, 7 Dec 2022 12:49:03 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; i=@quicinc.com; q=dns/txt; s=qcdkim; t=1670446143; x=1701982143; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version; bh=ZWh0XtmWAZIO7YQMk78LiilkuRluQTz7fx7cik9AWAc=; b=LTYOeyE0zzYTu7EK+Bvsuy4TEGPA8xvOXd9xxWWn4mz7/BWAVtAQcPwz kWrWVMri0pTH6xFq1hikx6H6V5J/pQLL/HFFzSoAqegRWo6WIsIsS0ocu 4IOSyBdDVCyUE7otkilFkUUTjXgpf+YZYyIaiOl4nectxg/1fpUcIfNSP w=; Received: from unknown (HELO ironmsg-SD-alpha.qualcomm.com) ([10.53.140.30]) by alexa-out-sd-02.qualcomm.com with ESMTP; 07 Dec 2022 12:49:03 -0800 X-QCInternal: smtphost Received: from unknown (HELO nasanex01a.na.qualcomm.com) ([10.52.223.231]) by ironmsg-SD-alpha.qualcomm.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 07 Dec 2022 12:49:03 -0800 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 15.2.986.36; Wed, 7 Dec 2022 12:49:02 -0800 From: Asutosh Das To: , , CC: , , , , , , , , , Asutosh Das , , Alim Akhtar , "James E.J. Bottomley" , Krzysztof Kozlowski , Jinyoung Choi , open list Subject: [PATCH v10 13/16] ufs: core: Prepare for completion in mcq Date: Wed, 7 Dec 2022 12:46:24 -0800 Message-ID: <73b4e33ce04f8ae3d909d4a32fbc5851c4987bd5.1670445699.git.quic_asutoshd@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) Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Modify completion path APIs and add completion queue entry. Co-developed-by: Can Guo Signed-off-by: Can Guo Signed-off-by: Asutosh Das Reviewed-by: Bart Van Assche Reviewed-by: Manivannan Sadhasivam --- drivers/ufs/core/ufshcd-priv.h | 2 ++ drivers/ufs/core/ufshcd.c | 80 ++++++++++++++++++++++++++---------------- 2 files changed, 51 insertions(+), 31 deletions(-) diff --git a/drivers/ufs/core/ufshcd-priv.h b/drivers/ufs/core/ufshcd-priv.h index a07f85e..a7af6aa 100644 --- a/drivers/ufs/core/ufshcd-priv.h +++ b/drivers/ufs/core/ufshcd-priv.h @@ -61,6 +61,8 @@ int ufshcd_query_attr(struct ufs_hba *hba, enum query_opcode opcode, int ufshcd_query_flag(struct ufs_hba *hba, enum query_opcode opcode, enum flag_idn idn, u8 index, bool *flag_res); void ufshcd_auto_hibern8_update(struct ufs_hba *hba, u32 ahit); +void ufshcd_compl_one_cqe(struct ufs_hba *hba, int task_tag, + struct cq_entry *cqe); int ufshcd_mcq_init(struct ufs_hba *hba); int ufshcd_mcq_decide_queue_depth(struct ufs_hba *hba); int ufshcd_mcq_memory_alloc(struct ufs_hba *hba); diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c index a7e613d..831da4f 100644 --- a/drivers/ufs/core/ufshcd.c +++ b/drivers/ufs/core/ufshcd.c @@ -784,12 +784,17 @@ static inline bool ufshcd_is_device_present(struct ufs_hba *hba) /** * ufshcd_get_tr_ocs - Get the UTRD Overall Command Status * @lrbp: pointer to local command reference block + * @cqe: pointer to the completion queue entry * * This function is used to get the OCS field from UTRD * Returns the OCS field in the UTRD */ -static enum utp_ocs ufshcd_get_tr_ocs(struct ufshcd_lrb *lrbp) +static enum utp_ocs ufshcd_get_tr_ocs(struct ufshcd_lrb *lrbp, + struct cq_entry *cqe) { + if (cqe) + return le32_to_cpu(cqe->status) & MASK_OCS; + return le32_to_cpu(lrbp->utr_descriptor_ptr->header.dword_2) & MASK_OCS; } @@ -3048,7 +3053,7 @@ static int ufshcd_wait_for_dev_cmd(struct ufs_hba *hba, * not trigger any race conditions. */ hba->dev_cmd.complete = NULL; - err = ufshcd_get_tr_ocs(lrbp); + err = ufshcd_get_tr_ocs(lrbp, hba->dev_cmd.cqe); if (!err) err = ufshcd_dev_cmd_completion(hba, lrbp); } else { @@ -5216,18 +5221,20 @@ ufshcd_scsi_cmd_status(struct ufshcd_lrb *lrbp, int scsi_status) * ufshcd_transfer_rsp_status - Get overall status of the response * @hba: per adapter instance * @lrbp: pointer to local reference block of completed command + * @cqe: pointer to the completion queue entry * * Returns result of the command to notify SCSI midlayer */ static inline int -ufshcd_transfer_rsp_status(struct ufs_hba *hba, struct ufshcd_lrb *lrbp) +ufshcd_transfer_rsp_status(struct ufs_hba *hba, struct ufshcd_lrb *lrbp, + struct cq_entry *cqe) { int result = 0; int scsi_status; enum utp_ocs ocs; /* overall command status of utrd */ - ocs = ufshcd_get_tr_ocs(lrbp); + ocs = ufshcd_get_tr_ocs(lrbp, cqe); if (hba->quirks & UFSHCD_QUIRK_BROKEN_OCS_FATAL_ERROR) { if (be32_to_cpu(lrbp->ucd_rsp_ptr->header.dword_1) & @@ -5392,42 +5399,53 @@ static void ufshcd_release_scsi_cmd(struct ufs_hba *hba, } /** - * __ufshcd_transfer_req_compl - handle SCSI and query command completion + * ufshcd_compl_one_cqe - handle a completion queue entry * @hba: per adapter instance - * @completed_reqs: bitmask that indicates which requests to complete + * @task_tag: the task tag of the request to be completed + * @cqe: pointer to the completion queue entry */ -static void __ufshcd_transfer_req_compl(struct ufs_hba *hba, - unsigned long completed_reqs) +void ufshcd_compl_one_cqe(struct ufs_hba *hba, int task_tag, + struct cq_entry *cqe) { struct ufshcd_lrb *lrbp; struct scsi_cmnd *cmd; - int index; - - for_each_set_bit(index, &completed_reqs, hba->nutrs) { - lrbp = &hba->lrb[index]; - lrbp->compl_time_stamp = ktime_get(); - lrbp->compl_time_stamp_local_clock = local_clock(); - cmd = lrbp->cmd; - if (cmd) { - if (unlikely(ufshcd_should_inform_monitor(hba, lrbp))) - ufshcd_update_monitor(hba, lrbp); - ufshcd_add_command_trace(hba, index, UFS_CMD_COMP); - cmd->result = ufshcd_transfer_rsp_status(hba, lrbp); - ufshcd_release_scsi_cmd(hba, lrbp); - /* Do not touch lrbp after scsi done */ - scsi_done(cmd); - } else if (lrbp->command_type == UTP_CMD_TYPE_DEV_MANAGE || - lrbp->command_type == UTP_CMD_TYPE_UFS_STORAGE) { - if (hba->dev_cmd.complete) { - ufshcd_add_command_trace(hba, index, - UFS_DEV_COMP); - complete(hba->dev_cmd.complete); - ufshcd_clk_scaling_update_busy(hba); - } + + lrbp = &hba->lrb[task_tag]; + lrbp->compl_time_stamp = ktime_get(); + cmd = lrbp->cmd; + if (cmd) { + if (unlikely(ufshcd_should_inform_monitor(hba, lrbp))) + ufshcd_update_monitor(hba, lrbp); + ufshcd_add_command_trace(hba, task_tag, UFS_CMD_COMP); + cmd->result = ufshcd_transfer_rsp_status(hba, lrbp, cqe); + ufshcd_release_scsi_cmd(hba, lrbp); + /* Do not touch lrbp after scsi done */ + scsi_done(cmd); + } else if (lrbp->command_type == UTP_CMD_TYPE_DEV_MANAGE || + lrbp->command_type == UTP_CMD_TYPE_UFS_STORAGE) { + if (hba->dev_cmd.complete) { + hba->dev_cmd.cqe = cqe; + ufshcd_add_command_trace(hba, task_tag, UFS_DEV_COMP); + complete(hba->dev_cmd.complete); + ufshcd_clk_scaling_update_busy(hba); } } } +/** + * __ufshcd_transfer_req_compl - handle SCSI and query command completion + * @hba: per adapter instance + * @completed_reqs: bitmask that indicates which requests to complete + */ +static void __ufshcd_transfer_req_compl(struct ufs_hba *hba, + unsigned long completed_reqs) +{ + int tag; + + for_each_set_bit(tag, &completed_reqs, hba->nutrs) + ufshcd_compl_one_cqe(hba, tag, NULL); +} + /* Any value that is not an existing queue number is fine for this constant. */ enum { UFSHCD_POLL_FROM_INTERRUPT_CONTEXT = -1