From patchwork Thu Dec 8 23:18:31 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Asutosh Das X-Patchwork-Id: 13069011 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 A22EAC4332F for ; Thu, 8 Dec 2022 23:20:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229992AbiLHXUM (ORCPT ); Thu, 8 Dec 2022 18:20:12 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59564 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230022AbiLHXTs (ORCPT ); Thu, 8 Dec 2022 18:19:48 -0500 Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 59AA7A0F80; Thu, 8 Dec 2022 15:19:47 -0800 (PST) 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 2B8N479S014411; Thu, 8 Dec 2022 23:19:31 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=KUmDDQbEKYIrvM5vrZzKHPw9tSj7QBRyxDFFydUs+Yc=; b=NyzdBflikwHJw0bAckp67jPSz0FKvMNlHbvVC2mKlJCC2X1Z0xy05zI5XGl4hTHAZoLs vZAf4Ss5pm6pmM5BqSzJES70JQqiqZpcWnOTH17H168jgCOmCzox5PZbkwH5Aebebw3h plXZAequ6jb4qbj9xmznvjHQ72XLcltIoInr5CiU4JF+5XuKa81c7HDti282pqYddkNz WXy/7OQn/O0Q47UR7oQm0itJe9I7b57fxR4EFPiDSn8da4Ef97rXWqX8urZzUSYzxCFK wO63edHzYiMc3+EeGyWM+rTl+n2UYS5lcr78MlxW2PyiJZkU0MAnotSFMkHPcI7cTFwn Rw== Received: from nasanppmta01.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3mbffs9nen-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 08 Dec 2022 23:19:31 +0000 Received: from nasanex01a.na.qualcomm.com (corens_vlan604_snip.qualcomm.com [10.53.140.1]) by NASANPPMTA01.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 2B8NJVv8030557 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 8 Dec 2022 23:19:31 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 15.2.986.36; Thu, 8 Dec 2022 15:19:30 -0800 From: Asutosh Das To: , , CC: , , , , , , , , , Asutosh Das , , Alim Akhtar , "James E.J. Bottomley" , Jinyoung Choi , Krzysztof Kozlowski , Arthur Simchaev , Yoshihiro Shimoda , Keoseong Park , open list Subject: [PATCH v11 05/16] ufs: core: mcq: Add support to allocate multiple queues Date: Thu, 8 Dec 2022 15:18:31 -0800 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: 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-ORIG-GUID: xpEqI_AD9L6o5fnT-wmFP71vU5sKBOLK X-Proofpoint-GUID: xpEqI_AD9L6o5fnT-wmFP71vU5sKBOLK X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.923,Hydra:6.0.545,FMLib:17.11.122.1 definitions=2022-12-08_12,2022-12-08_01,2022-06-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 adultscore=0 mlxscore=0 priorityscore=1501 impostorscore=0 lowpriorityscore=0 mlxlogscore=999 bulkscore=0 spamscore=0 malwarescore=0 suspectscore=0 clxscore=1015 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2210170000 definitions=main-2212080192 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Multi-circular queue (MCQ) has been added in UFSHC v4.0 standard in addition to the Single Doorbell mode. The MCQ mode supports multiple submission and completion queues. Add support to allocate and configure the queues. Add module parameters support to configure the queues. 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/Makefile | 2 +- drivers/ufs/core/ufs-mcq.c | 124 +++++++++++++++++++++++++++++++++++++++++ drivers/ufs/core/ufshcd-priv.h | 1 + drivers/ufs/core/ufshcd.c | 12 ++++ include/ufs/ufshcd.h | 4 ++ 5 files changed, 142 insertions(+), 1 deletion(-) create mode 100644 drivers/ufs/core/ufs-mcq.c diff --git a/drivers/ufs/core/Makefile b/drivers/ufs/core/Makefile index 62f38c5..4d02e0f 100644 --- a/drivers/ufs/core/Makefile +++ b/drivers/ufs/core/Makefile @@ -1,7 +1,7 @@ # SPDX-License-Identifier: GPL-2.0 obj-$(CONFIG_SCSI_UFSHCD) += ufshcd-core.o -ufshcd-core-y += ufshcd.o ufs-sysfs.o +ufshcd-core-y += ufshcd.o ufs-sysfs.o ufs-mcq.o ufshcd-core-$(CONFIG_DEBUG_FS) += ufs-debugfs.o ufshcd-core-$(CONFIG_SCSI_UFS_BSG) += ufs_bsg.o ufshcd-core-$(CONFIG_SCSI_UFS_CRYPTO) += ufshcd-crypto.o diff --git a/drivers/ufs/core/ufs-mcq.c b/drivers/ufs/core/ufs-mcq.c new file mode 100644 index 0000000..6ed3625 --- /dev/null +++ b/drivers/ufs/core/ufs-mcq.c @@ -0,0 +1,124 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (c) 2022 Qualcomm Innovation Center. All rights reserved. + * + * Authors: + * Asutosh Das + * Can Guo + */ + +#include +#include +#include +#include +#include "ufshcd-priv.h" + +#define MAX_QUEUE_SUP GENMASK(7, 0) +#define UFS_MCQ_MIN_RW_QUEUES 2 +#define UFS_MCQ_MIN_READ_QUEUES 0 +#define UFS_MCQ_NUM_DEV_CMD_QUEUES 1 +#define UFS_MCQ_MIN_POLL_QUEUES 0 + +static int rw_queue_count_set(const char *val, const struct kernel_param *kp) +{ + return param_set_uint_minmax(val, kp, UFS_MCQ_MIN_RW_QUEUES, + num_possible_cpus()); +} + +static const struct kernel_param_ops rw_queue_count_ops = { + .set = rw_queue_count_set, + .get = param_get_uint, +}; + +static unsigned int rw_queues; +module_param_cb(rw_queues, &rw_queue_count_ops, &rw_queues, 0644); +MODULE_PARM_DESC(rw_queues, + "Number of interrupt driven I/O queues used for rw. Default value is nr_cpus"); + +static int read_queue_count_set(const char *val, const struct kernel_param *kp) +{ + return param_set_uint_minmax(val, kp, UFS_MCQ_MIN_READ_QUEUES, + num_possible_cpus()); +} + +static const struct kernel_param_ops read_queue_count_ops = { + .set = read_queue_count_set, + .get = param_get_uint, +}; + +static unsigned int read_queues; +module_param_cb(read_queues, &read_queue_count_ops, &read_queues, 0644); +MODULE_PARM_DESC(read_queues, + "Number of interrupt driven read queues used for read. Default value is 0"); + +static int poll_queue_count_set(const char *val, const struct kernel_param *kp) +{ + return param_set_uint_minmax(val, kp, UFS_MCQ_MIN_POLL_QUEUES, + num_possible_cpus()); +} + +static const struct kernel_param_ops poll_queue_count_ops = { + .set = poll_queue_count_set, + .get = param_get_uint, +}; + +static unsigned int poll_queues = 1; +module_param_cb(poll_queues, &poll_queue_count_ops, &poll_queues, 0644); +MODULE_PARM_DESC(poll_queues, + "Number of poll queues used for r/w. Default value is 1"); + +static int ufshcd_mcq_config_nr_queues(struct ufs_hba *hba) +{ + int i; + u32 hba_maxq, rem, tot_queues; + struct Scsi_Host *host = hba->host; + + hba_maxq = FIELD_GET(MAX_QUEUE_SUP, hba->mcq_capabilities); + + tot_queues = UFS_MCQ_NUM_DEV_CMD_QUEUES + read_queues + poll_queues + + rw_queues; + + if (hba_maxq < tot_queues) { + dev_err(hba->dev, "Total queues (%d) exceeds HC capacity (%d)\n", + tot_queues, hba_maxq); + return -EOPNOTSUPP; + } + + rem = hba_maxq - UFS_MCQ_NUM_DEV_CMD_QUEUES; + + if (rw_queues) { + hba->nr_queues[HCTX_TYPE_DEFAULT] = rw_queues; + rem -= hba->nr_queues[HCTX_TYPE_DEFAULT]; + } else { + rw_queues = num_possible_cpus(); + } + + if (poll_queues) { + hba->nr_queues[HCTX_TYPE_POLL] = poll_queues; + rem -= hba->nr_queues[HCTX_TYPE_POLL]; + } + + if (read_queues) { + hba->nr_queues[HCTX_TYPE_READ] = read_queues; + rem -= hba->nr_queues[HCTX_TYPE_READ]; + } + + if (!hba->nr_queues[HCTX_TYPE_DEFAULT]) + hba->nr_queues[HCTX_TYPE_DEFAULT] = min3(rem, rw_queues, + num_possible_cpus()); + + for (i = 0; i < HCTX_MAX_TYPES; i++) + host->nr_hw_queues += hba->nr_queues[i]; + + hba->nr_hw_queues = host->nr_hw_queues + UFS_MCQ_NUM_DEV_CMD_QUEUES; + return 0; +} + +int ufshcd_mcq_init(struct ufs_hba *hba) +{ + int ret; + + ret = ufshcd_mcq_config_nr_queues(hba); + + return ret; +} diff --git a/drivers/ufs/core/ufshcd-priv.h b/drivers/ufs/core/ufshcd-priv.h index a9e8e1f..9368ba2 100644 --- a/drivers/ufs/core/ufshcd-priv.h +++ b/drivers/ufs/core/ufshcd-priv.h @@ -61,6 +61,7 @@ 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); +int ufshcd_mcq_init(struct ufs_hba *hba); #define SD_ASCII_STD true #define SD_RAW false diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c index 869e495..4e2355b 100644 --- a/drivers/ufs/core/ufshcd.c +++ b/drivers/ufs/core/ufshcd.c @@ -8220,6 +8220,11 @@ static int ufshcd_add_lus(struct ufs_hba *hba) return ret; } +static int ufshcd_alloc_mcq(struct ufs_hba *hba) +{ + return ufshcd_mcq_init(hba); +} + /** * ufshcd_probe_hba - probe hba to detect device and initialize it * @hba: per-adapter instance @@ -8269,6 +8274,13 @@ static int ufshcd_probe_hba(struct ufs_hba *hba, bool init_dev_params) goto out; if (is_mcq_supported(hba)) { + ret = ufshcd_alloc_mcq(hba); + if (ret) { + /* Continue with SDB mode */ + use_mcq_mode = false; + dev_err(hba->dev, "MCQ mode is disabled, err=%d\n", + ret); + } ret = scsi_add_host(host, hba->dev); if (ret) { dev_err(hba->dev, "scsi_add_host failed\n"); diff --git a/include/ufs/ufshcd.h b/include/ufs/ufshcd.h index 70c0f9f..146b613 100644 --- a/include/ufs/ufshcd.h +++ b/include/ufs/ufshcd.h @@ -829,6 +829,8 @@ struct ufs_hba_monitor { * ee_ctrl_mask * @luns_avail: number of regular and well known LUNs supported by the UFS * device + * @nr_hw_queues: number of hardware queues configured + * @nr_queues: number of Queues of different queue types * @complete_put: whether or not to call ufshcd_rpm_put() from inside * ufshcd_resume_complete() * @ext_iid_sup: is EXT_IID is supported by UFSHC @@ -981,6 +983,8 @@ struct ufs_hba { u32 debugfs_ee_rate_limit_ms; #endif u32 luns_avail; + unsigned int nr_hw_queues; + unsigned int nr_queues[HCTX_MAX_TYPES]; bool complete_put; bool ext_iid_sup; bool mcq_sup;