From patchwork Tue Mar 2 09:26:40 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jean-Philippe Brucker X-Patchwork-Id: 12111459 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=-18.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT 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 2772BC4332B for ; Tue, 2 Mar 2021 11:22:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 05BE264F12 for ; Tue, 2 Mar 2021 11:22:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1446517AbhCBLRo (ORCPT ); Tue, 2 Mar 2021 06:17:44 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59882 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1379047AbhCBJiz (ORCPT ); Tue, 2 Mar 2021 04:38:55 -0500 Received: from mail-wm1-x333.google.com (mail-wm1-x333.google.com [IPv6:2a00:1450:4864:20::333]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 16767C0617AB for ; Tue, 2 Mar 2021 01:35:36 -0800 (PST) Received: by mail-wm1-x333.google.com with SMTP id o16so1951921wmh.0 for ; Tue, 02 Mar 2021 01:35:36 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=fAwFmceeI8PT69Qzv7BbL234cbzlwFiSG33CnDCXBuk=; b=pVUo6Je1O9n09zMy7XzMnOeoxCf2gwvJSFjHsUpFlcN2ASmVQotVn/P3GJaA2vMsPG 5Oa73C/bPbSORaAchXIQza2ekIiLHAMzhiBZSlMfN6WbI9De+lb3VRTl3rQ2yQVlngcr V2RHEDDpBUjaRbWMvhc/3ySgIrurqPttQruKNTQF2GytX5XdWxpKNvyRtIS3TzMszIvc JBZB4CBm0UCJiSKiLxjvSyjWHHMuuOuEHyTWoD+ba6Xp8wX8IFgRMCwyw68DBIQ5z2iC eWdpOaKbSD5yQITmiRYw1xTk99A7N0QY50S3SPObJAaXzoV7J2H4ZrpqEenmZmu1CZJM pCiw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=fAwFmceeI8PT69Qzv7BbL234cbzlwFiSG33CnDCXBuk=; b=Q5NMGlXfS1ximYQp76HpDpinkFPilr/b5oXC0pNtVTYky0gyVMeM61HoCgsxCj2kvx WjAbd65YqEtW8LU7xpSkvI3OpAg44lk2dhUV0MLKZ/jDL4zkdRCKVfwuEWGp0ffry5HX nQQB8XHhWaT0NVkQZG3f3WsnVl8trMq8+ocfagL7gSjGKUwgUq6A8Ly1koKpJC9r0M8E 0sYgYTeipUrHhz5XFb+y0JqVvqZxVErjQr/3e3qn8V2htf7jnrHeic1BWN9ZDT0txGWF T6elnQ2HDo6K3Z7s+AuUICDNmSKtwCxMlksCBjWeIEwLIpFJ1BF8Zu7Tm4uqL7oeJwzY 9yHQ== X-Gm-Message-State: AOAM530epzj/DpWBsEvgjHfVuVsnH3V392jZZA7L+XC2omicI0Bb7P5n KRRI4uo9ZPhCuQ4KrCfo2GUNpA== X-Google-Smtp-Source: ABdhPJwrpaQozpbifmdBMiCZvNYDUDCjs8CDLKRQmFMc/2Y3eNN20yvyuRxJXyxFUTgbOPqB1BFNww== X-Received: by 2002:a1c:a504:: with SMTP id o4mr3053405wme.174.1614677734793; Tue, 02 Mar 2021 01:35:34 -0800 (PST) Received: from localhost.localdomain ([2001:1715:4e26:a7e0:116c:c27a:3e7f:5eaf]) by smtp.gmail.com with ESMTPSA id w131sm1963818wmb.8.2021.03.02.01.35.33 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 02 Mar 2021 01:35:34 -0800 (PST) From: Jean-Philippe Brucker To: joro@8bytes.org, will@kernel.org Cc: lorenzo.pieralisi@arm.com, robh+dt@kernel.org, guohanjun@huawei.com, sudeep.holla@arm.com, rjw@rjwysocki.net, lenb@kernel.org, robin.murphy@arm.com, Jonathan.Cameron@huawei.com, eric.auger@redhat.com, iommu@lists.linux-foundation.org, devicetree@vger.kernel.org, linux-acpi@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-accelerators@lists.ozlabs.org, baolu.lu@linux.intel.com, jacob.jun.pan@linux.intel.com, kevin.tian@intel.com, vdumpa@nvidia.com, zhangfei.gao@linaro.org, shameerali.kolothum.thodi@huawei.com, vivek.gautam@arm.com, zhukeqian1@huawei.com, wangzhou1@hisilicon.com, Jean-Philippe Brucker , David Woodhouse Subject: [PATCH v13 04/10] iommu/vt-d: Support IOMMU_DEV_FEAT_IOPF Date: Tue, 2 Mar 2021 10:26:40 +0100 Message-Id: <20210302092644.2553014-5-jean-philippe@linaro.org> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210302092644.2553014-1-jean-philippe@linaro.org> References: <20210302092644.2553014-1-jean-philippe@linaro.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org Allow drivers to query and enable IOMMU_DEV_FEAT_IOPF, which amounts to checking whether PRI is enabled. Reviewed-by: Lu Baolu Signed-off-by: Jean-Philippe Brucker --- Cc: David Woodhouse Cc: Lu Baolu --- drivers/iommu/intel/iommu.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c index ee0932307d64..c5c5fd444779 100644 --- a/drivers/iommu/intel/iommu.c +++ b/drivers/iommu/intel/iommu.c @@ -5343,6 +5343,8 @@ static int siov_find_pci_dvsec(struct pci_dev *pdev) static bool intel_iommu_dev_has_feat(struct device *dev, enum iommu_dev_features feat) { + struct device_domain_info *info = get_domain_info(dev); + if (feat == IOMMU_DEV_FEAT_AUX) { int ret; @@ -5357,13 +5359,13 @@ intel_iommu_dev_has_feat(struct device *dev, enum iommu_dev_features feat) return !!siov_find_pci_dvsec(to_pci_dev(dev)); } - if (feat == IOMMU_DEV_FEAT_SVA) { - struct device_domain_info *info = get_domain_info(dev); + if (feat == IOMMU_DEV_FEAT_IOPF) + return info && info->pri_supported; + if (feat == IOMMU_DEV_FEAT_SVA) return info && (info->iommu->flags & VTD_FLAG_SVM_CAPABLE) && info->pasid_supported && info->pri_supported && info->ats_supported; - } return false; } @@ -5374,6 +5376,9 @@ intel_iommu_dev_enable_feat(struct device *dev, enum iommu_dev_features feat) if (feat == IOMMU_DEV_FEAT_AUX) return intel_iommu_enable_auxd(dev); + if (feat == IOMMU_DEV_FEAT_IOPF) + return intel_iommu_dev_has_feat(dev, feat) ? 0 : -ENODEV; + if (feat == IOMMU_DEV_FEAT_SVA) { struct device_domain_info *info = get_domain_info(dev);