From patchwork Wed Jan 27 15:43:17 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: 12050481 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 3CC1BC433E6 for ; Wed, 27 Jan 2021 15:47:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 06141207C4 for ; Wed, 27 Jan 2021 15:47:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236411AbhA0Prk (ORCPT ); Wed, 27 Jan 2021 10:47:40 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60380 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236616AbhA0Ppg (ORCPT ); Wed, 27 Jan 2021 10:45:36 -0500 Received: from mail-wr1-x42d.google.com (mail-wr1-x42d.google.com [IPv6:2a00:1450:4864:20::42d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 04200C061797 for ; Wed, 27 Jan 2021 07:44:40 -0800 (PST) Received: by mail-wr1-x42d.google.com with SMTP id g10so2413707wrx.1 for ; Wed, 27 Jan 2021 07:44:39 -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=0HAbfAEz8TnDqiVsICUxE3hnnLknlvV/GMLCZp7lxlM=; b=ad/j4aBI/T3WQEdCN+D6UAssRoPtamKNCApTqJ4FK8vTOMCdUIsdNHY5IzN6j1WbgY +8re948rFqrdclQrOU+JQ7TK+1NZcyhl5Aw0t9A0R1Lxy2hKotqfrnQ/TcKW9OYoflRv aCDaEnJAJO/9z9KFs4OidYWk8o/9ptYrG9b6u4M/reWw2gwF1+9/jnnx8yRw4vkuau5W 1o19RF+k1Mb91K5dJ4y+iYEQG9SvHHUf4d0+zb3Lxt4NOo2rs2euYSb+wQGCwe6OEE3C 1352Mdoft0AYtZ72LLDVh3bk+vfGO2y3Vj5eB8jtgQZy7Kor4+bbXI2vnPnyWLGJuU2b VWjg== 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=0HAbfAEz8TnDqiVsICUxE3hnnLknlvV/GMLCZp7lxlM=; b=I5lA31P/5Z8vxmDm5B1ReML4qMxkAqVpe6lm7ecJQejoi5Dzw9m7Gmi0QCmCjNVkc2 /YMbLdkgFwPDkWTSUsBay/m5UKkn41NqWxIiZYZsLEpS2fGOVfnzZ2m/0OA0AlD8Y0Hm pmBDtO+AXUi5SKIX6mGkVSSn9hChLU9Vdj0Qmdja2iU+chxXQ3R116kLRz6kBYpcRRDh chbTnrvv448tfP3ZLKcBjZdCIpVs+hOQzX/c67IsGj8QK0rCvSkb6a9K8l1gtjiAz9DD UJmdaeewS64mpvXj35k5hHgNRjrN+0A40RUlgE5W4Do1HvFmNgkT/4jtaffXUqmPKxYg ZGzQ== X-Gm-Message-State: AOAM5325cD0wrRHBrbUEPok9HG06tOsUEVzoHg0aWxQ1ymGDFWT0nD+0 wcEXkxCD+J6K5s8wOGoM4vX0oQ== X-Google-Smtp-Source: ABdhPJxbp7bo3QjbnBits7bgWrNsTaylW9bW8JBsHqc833dGFAfY18iRqP1/Sk6YqyELC3Kkzp0OAA== X-Received: by 2002:adf:fc8a:: with SMTP id g10mr12217200wrr.189.1611762278786; Wed, 27 Jan 2021 07:44:38 -0800 (PST) Received: from localhost.localdomain ([2001:1715:4e26:a7e0:116c:c27a:3e7f:5eaf]) by smtp.gmail.com with ESMTPSA id r13sm3046921wmh.9.2021.01.27.07.44.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 27 Jan 2021 07:44:38 -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, Jean-Philippe Brucker , David Woodhouse Subject: [PATCH v12 04/10] iommu/vt-d: Support IOMMU_DEV_FEAT_IOPF Date: Wed, 27 Jan 2021 16:43:17 +0100 Message-Id: <20210127154322.3959196-5-jean-philippe@linaro.org> X-Mailer: git-send-email 2.30.0 In-Reply-To: <20210127154322.3959196-1-jean-philippe@linaro.org> References: <20210127154322.3959196-1-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 f665322a0991..c777bd94df5d 100644 --- a/drivers/iommu/intel/iommu.c +++ b/drivers/iommu/intel/iommu.c @@ -5330,6 +5330,8 @@ 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; @@ -5344,13 +5346,13 @@ 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; } @@ -5361,6 +5363,9 @@ 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);