From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D37C6C04FF3 for ; Sat, 22 May 2021 00:20:26 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B85DB613E4 for ; Sat, 22 May 2021 00:20:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231156AbhEVAVo (ORCPT ); Fri, 21 May 2021 20:21:44 -0400 Received: from mga01.intel.com ([192.55.52.88]:24594 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230448AbhEVAVc (ORCPT ); Fri, 21 May 2021 20:21:32 -0400 IronPort-SDR: LF2MPiCXllk4cEOIio/MgJsD2XjDb8r3gO3Eo/CB6EiZ5UQqfJDruwoicit5zF1DkuWj2bsL/k LJHaw9Rp9R0A== X-IronPort-AV: E=McAfee;i="6200,9189,9991"; a="222715671" X-IronPort-AV: E=Sophos;i="5.82,319,1613462400"; d="scan'208";a="222715671" Received: from fmsmga006.fm.intel.com ([10.253.24.20]) by fmsmga101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 21 May 2021 17:20:08 -0700 IronPort-SDR: hZOuSZ0CJpLCgrLBJ3aW1MyOVv4Ft8V37cTrk97PDJSE+4tfuBU2QM5z2+p5QWjpF1Gp1S4kO/ b3CaTPLj5mQA== X-IronPort-AV: E=Sophos;i="5.82,319,1613462400"; d="scan'208";a="628864578" Received: from djiang5-desk3.ch.intel.com ([143.182.136.137]) by fmsmga006-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 21 May 2021 17:20:07 -0700 Subject: [PATCH v6 10/20] vfio/mdev: idxd: add mdev type as a new wq type From: Dave Jiang To: alex.williamson@redhat.com, kwankhede@nvidia.com, tglx@linutronix.de, vkoul@kernel.org, jgg@mellanox.com Cc: megha.dey@intel.com, jacob.jun.pan@intel.com, ashok.raj@intel.com, yi.l.liu@intel.com, baolu.lu@intel.com, kevin.tian@intel.com, sanjay.k.kumar@intel.com, tony.luck@intel.com, dan.j.williams@intel.com, eric.auger@redhat.com, pbonzini@redhat.com, dmaengine@vger.kernel.org, linux-kernel@vger.kernel.org, kvm@vger.kernel.org Date: Fri, 21 May 2021 17:20:07 -0700 Message-ID: <162164280754.261970.2354155734920115161.stgit@djiang5-desk3.ch.intel.com> In-Reply-To: <162164243591.261970.3439987543338120797.stgit@djiang5-desk3.ch.intel.com> References: <162164243591.261970.3439987543338120797.stgit@djiang5-desk3.ch.intel.com> User-Agent: StGit/0.23-29-ga622f1 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: dmaengine@vger.kernel.org Add "mdev" wq type and support helpers. The mdev wq type marks the wq to be utilized as a VFIO mediated device. Signed-off-by: Dave Jiang --- drivers/dma/idxd/idxd.h | 6 ++++++ drivers/dma/idxd/sysfs.c | 5 +++++ 2 files changed, 11 insertions(+) diff --git a/drivers/dma/idxd/idxd.h b/drivers/dma/idxd/idxd.h index 34ffa6dad53a..cbb046c2921f 100644 --- a/drivers/dma/idxd/idxd.h +++ b/drivers/dma/idxd/idxd.h @@ -129,6 +129,7 @@ enum idxd_wq_type { IDXD_WQT_NONE = 0, IDXD_WQT_KERNEL, IDXD_WQT_USER, + IDXD_WQT_MDEV, }; struct idxd_cdev { @@ -424,6 +425,11 @@ static inline bool is_idxd_wq_user(struct idxd_wq *wq) return wq->type == IDXD_WQT_USER; } +static inline bool is_idxd_wq_mdev(struct idxd_wq *wq) +{ + return (wq->type == IDXD_WQT_MDEV); +} + static inline bool wq_dedicated(struct idxd_wq *wq) { return test_bit(WQ_FLAG_DEDICATED, &wq->flags); diff --git a/drivers/dma/idxd/sysfs.c b/drivers/dma/idxd/sysfs.c index 6583c9c2e992..3d3a84be2c9b 100644 --- a/drivers/dma/idxd/sysfs.c +++ b/drivers/dma/idxd/sysfs.c @@ -17,6 +17,7 @@ static char *idxd_wq_type_names[] = { [IDXD_WQT_NONE] = "none", [IDXD_WQT_KERNEL] = "kernel", [IDXD_WQT_USER] = "user", + [IDXD_WQT_MDEV] = "mdev", }; static bool is_idxd_dev_drv(struct device_driver *drv) @@ -860,6 +861,8 @@ static ssize_t wq_type_show(struct device *dev, return sysfs_emit(buf, "%s\n", idxd_wq_type_names[IDXD_WQT_KERNEL]); case IDXD_WQT_USER: return sysfs_emit(buf, "%s\n", idxd_wq_type_names[IDXD_WQT_USER]); + case IDXD_WQT_MDEV: + return sysfs_emit(buf, "%s\n", idxd_wq_type_names[IDXD_WQT_MDEV]); case IDXD_WQT_NONE: default: return sysfs_emit(buf, "%s\n", idxd_wq_type_names[IDXD_WQT_NONE]); @@ -885,6 +888,8 @@ static ssize_t wq_type_store(struct device *dev, wq->type = IDXD_WQT_KERNEL; else if (sysfs_streq(buf, idxd_wq_type_names[IDXD_WQT_USER])) wq->type = IDXD_WQT_USER; + else if (sysfs_streq(buf, idxd_wq_type_names[IDXD_WQT_MDEV])) + wq->type = IDXD_WQT_MDEV; else return -EINVAL;