From patchwork Mon May 8 20:07:23 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tom Zanussi X-Patchwork-Id: 91262 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a59:b0ea:0:b0:3b6:4342:cba0 with SMTP id b10csp2401518vqo; Mon, 8 May 2023 13:09:18 -0700 (PDT) X-Google-Smtp-Source: ACHHUZ6OETbUfxFDMU0Cn0RiGr5x1GTUJu4ohGjxqeT2pGVCryX0bSFDkC9lmXXzNtYCnLgHfnDQ X-Received: by 2002:a05:6a00:b41:b0:623:8592:75c4 with SMTP id p1-20020a056a000b4100b00623859275c4mr15642585pfo.29.1683576558592; Mon, 08 May 2023 13:09:18 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1683576558; cv=none; d=google.com; s=arc-20160816; b=ZVb0AOepcmP4p4D6LOt7iskEHmTK0vmgCpViuZGRra7CUpZGK00qBZK3DjcLuWpjE2 5tEq3fSSlLN/UrE0G41tj8kRrbMBFU2CtMLQWyp4UT4MlrLtvEcWfaV7X41eBmIzXm45 Ymvw598GfR1T1+0EFV3vvMuSkQrbVIy+oste3VJ76aoV0Wb7klqnn0LUpszG6FJ9P3tw fPuutjAIOMfr7xDQUs1Xl1LCMoilA5kj6+VDOq9b0++DyN7iQyPuAn58imx3L7CLc/y7 rWk5uPUC+0FfDnA4zhfCM+0INp0p9vjGUNy1BbioVbv0CYoV/URCX2kYhbncZp+QBEhw ynbA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature; bh=1ZKysnlBYHG8dIfWua+osoXqTj+idGfZRrQPjvfJlK8=; b=S3rzscj6JeVnOeSGuRfvcUZlNSxxAX4aVHY49TciKYWT9kHqT8FZQsi6HjmRNBleRf nx2Ru3VH1MhCrqpXmOcuz5UE8wgDZCU5ZgRNwt8sVjAwozlzir+fb9vSssWGWib2fxMp 4HN5EOPfZpK8zvpmny36ZxfR17/MBeUQcXhy+BtU578pkgpv0DImWsBiSBHAFUEpcoXY Srn29oA1W/CPHe/3pibSsFbm3VBwqZDQ20i7Ill3rimq7jCWUqykb957Ppt022wtlBHz jRCK49dBS82FWmLTLK7ipCQUxfpTuGONiczZ3m+7R2q86yrOlA9LaOLm/1XzrKtKuBi3 LZVA== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@intel.com header.s=Intel header.b=k1d0EKKt; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=intel.com Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id j5-20020a637a45000000b00528c16e927dsi2423558pgn.22.2023.05.08.13.09.05; Mon, 08 May 2023 13:09:18 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@intel.com header.s=Intel header.b=k1d0EKKt; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=intel.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233659AbjEHUHu (ORCPT + 99 others); Mon, 8 May 2023 16:07:50 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50652 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232953AbjEHUHp (ORCPT ); Mon, 8 May 2023 16:07:45 -0400 Received: from mga04.intel.com (mga04.intel.com [192.55.52.120]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B3998559F; Mon, 8 May 2023 13:07:43 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1683576463; x=1715112463; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=pJwEOHvPkYgQTXGPVd+jTC/4AgqiosCGSejwZchmjTU=; b=k1d0EKKtMW8odai6t6NSq++1dhtah4AsVwOyn+qSmZOU4BBcoaHlcm8H Jj0wBB4Tv8hA9iBmA1iGmIOeAqiH3xvhdT0Gd0vhap0dga/HoAHOlMoB/ mNyHV3XygoNkeSOnd3Zo5oXbSc/5viTsmD1vERbxaM8yU58z4QOXkfgbB 9uY8sMvlUYqwMSKDdiFvGCs3RUDcs+PKtFvuRUChoiw0MozIywCEhQMEd GFemVsAQekip6YaWITH7j/2eFRb/6IpjsMYYyyiquzxFX6kY7FGv6/nKY ltxPn1+N9maodbaXJlGUApOHoBVRNaq3QWDyXUsgoX6bn8tMEUPPmMEYA Q==; X-IronPort-AV: E=McAfee;i="6600,9927,10704"; a="348573608" X-IronPort-AV: E=Sophos;i="5.99,259,1677571200"; d="scan'208";a="348573608" Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by fmsmga104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 08 May 2023 13:07:43 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10704"; a="788241614" X-IronPort-AV: E=Sophos;i="5.99,259,1677571200"; d="scan'208";a="788241614" Received: from sajmal-mobl1.amr.corp.intel.com (HELO tzanussi-mobl1.intel.com) ([10.212.74.4]) by fmsmga003-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 08 May 2023 13:07:42 -0700 From: Tom Zanussi To: herbert@gondor.apana.org.au, davem@davemloft.net, fenghua.yu@intel.com, vkoul@kernel.org Cc: dave.jiang@intel.com, tony.luck@intel.com, wajdi.k.feghali@intel.com, james.guilford@intel.com, kanchana.p.sridhar@intel.com, giovanni.cabiddu@intel.com, linux-kernel@vger.kernel.org, linux-crypto@vger.kernel.org, dmaengine@vger.kernel.org Subject: [PATCH v4 01/15] dmaengine: idxd: add wq driver name support for accel-config user tool Date: Mon, 8 May 2023 15:07:23 -0500 Message-Id: X-Mailer: git-send-email 2.34.1 In-Reply-To: References: MIME-Version: 1.0 X-Spam-Status: No, score=-4.3 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_EF,RCVD_IN_DNSWL_MED,SPF_HELO_NONE, SPF_NONE,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1765357973163459931?= X-GMAIL-MSGID: =?utf-8?q?1765357973163459931?= From: Dave Jiang With the possibility of multiple wq drivers that can be bound to the wq, the user config tool accel-config needs a way to know which wq driver to bind to the wq. Introduce per wq driver_name sysfs attribute where the user can indicate the driver to be bound to the wq. This allows accel-config to just bind to the driver using wq->driver_name. Signed-off-by: Dave Jiang Signed-off-by: Tom Zanussi Reviewed-by: Fenghua Yu --- .../ABI/stable/sysfs-driver-dma-idxd | 6 ++++ drivers/dma/idxd/cdev.c | 8 ++++++ drivers/dma/idxd/dma.c | 6 ++++ drivers/dma/idxd/idxd.h | 9 ++++++ drivers/dma/idxd/sysfs.c | 28 +++++++++++++++++++ include/uapi/linux/idxd.h | 1 + 6 files changed, 58 insertions(+) diff --git a/Documentation/ABI/stable/sysfs-driver-dma-idxd b/Documentation/ABI/stable/sysfs-driver-dma-idxd index 3becc9a82bdf..d5daae442fe7 100644 --- a/Documentation/ABI/stable/sysfs-driver-dma-idxd +++ b/Documentation/ABI/stable/sysfs-driver-dma-idxd @@ -244,6 +244,12 @@ Description: Shows the operation capability bits displayed in bitmap format correlates to the operations allowed. It's visible only on platforms that support the capability. +What: /sys/bus/dsa/devices/wq./driver_name +Date: Mar 27, 2023 +KernelVersion: 6.4.0 +Contact: dmaengine@vger.kernel.org +Description: Name of driver to be bounded to the wq. + What: /sys/bus/dsa/devices/engine./group_id Date: Oct 25, 2019 KernelVersion: 5.6.0 diff --git a/drivers/dma/idxd/cdev.c b/drivers/dma/idxd/cdev.c index 674bfefca088..f3d1604e753d 100644 --- a/drivers/dma/idxd/cdev.c +++ b/drivers/dma/idxd/cdev.c @@ -304,6 +304,7 @@ void idxd_wq_del_cdev(struct idxd_wq *wq) static int idxd_user_drv_probe(struct idxd_dev *idxd_dev) { + struct device *dev = &idxd_dev->conf_dev; struct idxd_wq *wq = idxd_dev_to_wq(idxd_dev); struct idxd_device *idxd = wq->idxd; int rc; @@ -330,6 +331,13 @@ static int idxd_user_drv_probe(struct idxd_dev *idxd_dev) } mutex_lock(&wq->wq_lock); + + if (!idxd_wq_driver_name_match(wq, dev)) { + idxd->cmd_status = IDXD_SCMD_WQ_NO_DRV_NAME; + rc = -ENODEV; + goto err; + } + wq->type = IDXD_WQT_USER; rc = drv_enable_wq(wq); if (rc < 0) diff --git a/drivers/dma/idxd/dma.c b/drivers/dma/idxd/dma.c index eb35ca313684..8bb7e7ff8d6a 100644 --- a/drivers/dma/idxd/dma.c +++ b/drivers/dma/idxd/dma.c @@ -305,6 +305,12 @@ static int idxd_dmaengine_drv_probe(struct idxd_dev *idxd_dev) return -ENXIO; mutex_lock(&wq->wq_lock); + if (!idxd_wq_driver_name_match(wq, dev)) { + idxd->cmd_status = IDXD_SCMD_WQ_NO_DRV_NAME; + rc = -ENODEV; + goto err; + } + wq->type = IDXD_WQT_KERNEL; rc = drv_enable_wq(wq); diff --git a/drivers/dma/idxd/idxd.h b/drivers/dma/idxd/idxd.h index 7ced8d283d98..a83aecf11a01 100644 --- a/drivers/dma/idxd/idxd.h +++ b/drivers/dma/idxd/idxd.h @@ -151,6 +151,8 @@ struct idxd_cdev { int minor; }; +#define DRIVER_NAME_SIZE 128 + #define IDXD_ALLOCATED_BATCH_SIZE 128U #define WQ_NAME_SIZE 1024 #define WQ_TYPE_SIZE 10 @@ -214,6 +216,8 @@ struct idxd_wq { char name[WQ_NAME_SIZE + 1]; u64 max_xfer_bytes; u32 max_batch_size; + + char driver_name[DRIVER_NAME_SIZE + 1]; }; struct idxd_engine { @@ -580,6 +584,11 @@ static inline void idxd_wqcfg_set_max_batch_shift(int idxd_type, union wqcfg *wq wqcfg->max_batch_shift = max_batch_shift; } +static inline int idxd_wq_driver_name_match(struct idxd_wq *wq, struct device *dev) +{ + return (strncmp(wq->driver_name, dev->driver->name, strlen(dev->driver->name)) == 0); +} + int __must_check __idxd_driver_register(struct idxd_device_driver *idxd_drv, struct module *module, const char *mod_name); #define idxd_driver_register(driver) \ diff --git a/drivers/dma/idxd/sysfs.c b/drivers/dma/idxd/sysfs.c index 18cd8151dee0..3c9c549d356f 100644 --- a/drivers/dma/idxd/sysfs.c +++ b/drivers/dma/idxd/sysfs.c @@ -1224,6 +1224,33 @@ static ssize_t wq_op_config_store(struct device *dev, struct device_attribute *a static struct device_attribute dev_attr_wq_op_config = __ATTR(op_config, 0644, wq_op_config_show, wq_op_config_store); +static ssize_t wq_driver_name_show(struct device *dev, struct device_attribute *attr, char *buf) +{ + struct idxd_wq *wq = confdev_to_wq(dev); + + return sysfs_emit(buf, "%s\n", wq->driver_name); +} + +static ssize_t wq_driver_name_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct idxd_wq *wq = confdev_to_wq(dev); + + if (wq->state != IDXD_WQ_DISABLED) + return -EPERM; + + if (strlen(buf) > DRIVER_NAME_SIZE || strlen(buf) == 0) + return -EINVAL; + + memset(wq->driver_name, 0, DRIVER_NAME_SIZE + 1); + strncpy(wq->driver_name, buf, DRIVER_NAME_SIZE); + strreplace(wq->name, '\n', '\0'); + return count; +} + +static struct device_attribute dev_attr_wq_driver_name = + __ATTR(driver_name, 0644, wq_driver_name_show, wq_driver_name_store); + static struct attribute *idxd_wq_attributes[] = { &dev_attr_wq_clients.attr, &dev_attr_wq_state.attr, @@ -1242,6 +1269,7 @@ static struct attribute *idxd_wq_attributes[] = { &dev_attr_wq_occupancy.attr, &dev_attr_wq_enqcmds_retries.attr, &dev_attr_wq_op_config.attr, + &dev_attr_wq_driver_name.attr, NULL, }; diff --git a/include/uapi/linux/idxd.h b/include/uapi/linux/idxd.h index 1d553bedbdb5..2f85c8f59eb5 100644 --- a/include/uapi/linux/idxd.h +++ b/include/uapi/linux/idxd.h @@ -30,6 +30,7 @@ enum idxd_scmd_stat { IDXD_SCMD_WQ_NO_PRIV = 0x800f0000, IDXD_SCMD_WQ_IRQ_ERR = 0x80100000, IDXD_SCMD_WQ_USER_NO_IOMMU = 0x80110000, + IDXD_SCMD_WQ_NO_DRV_NAME = 0x80200000, }; #define IDXD_SCMD_SOFTERR_MASK 0x80000000