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=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,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 7F400C2BA1A for ; Sun, 5 Apr 2020 08:34:38 +0000 (UTC) Received: from silver.osuosl.org (smtp3.osuosl.org [140.211.166.136]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 5F2E020678 for ; Sun, 5 Apr 2020 08:34:38 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 5F2E020678 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.intel.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=iommu-bounces@lists.linux-foundation.org Received: from localhost (localhost [127.0.0.1]) by silver.osuosl.org (Postfix) with ESMTP id 3A67420242; Sun, 5 Apr 2020 08:34:38 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from silver.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id LJPIF5RjW1fQ; Sun, 5 Apr 2020 08:34:35 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by silver.osuosl.org (Postfix) with ESMTP id 2E9AA204A8; Sun, 5 Apr 2020 08:34:35 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id 1DFB6C1AE2; Sun, 5 Apr 2020 08:34:35 +0000 (UTC) Received: from silver.osuosl.org (smtp3.osuosl.org [140.211.166.136]) by lists.linuxfoundation.org (Postfix) with ESMTP id 3B42EC0177 for ; Sun, 5 Apr 2020 08:34:33 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by silver.osuosl.org (Postfix) with ESMTP id 2846C204A8 for ; Sun, 5 Apr 2020 08:34:33 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from silver.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id IMGA8QDNLFng for ; Sun, 5 Apr 2020 08:34:30 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.7.6 Received: from mga14.intel.com (mga14.intel.com [192.55.52.115]) by silver.osuosl.org (Postfix) with ESMTPS id 868B8204F5 for ; Sun, 5 Apr 2020 08:34:30 +0000 (UTC) IronPort-SDR: MoRzVIiH6wjiIpfLyzFGQyl0mzgDgvk8PKJqqC82+yY6x1rYKqEmn520Il5fj3QaFna5doLJjY yrlucM9kAWLw== X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga004.jf.intel.com ([10.7.209.38]) by fmsmga103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 Apr 2020 01:34:30 -0700 IronPort-SDR: YQEZ9g4ZTJB4iDEeG95ARB80EYlsZEMvrPDSzOj4iJOVYQ7acNUVgVIlwpCqoOp9sHru3VSOZy KqFbjpY9AgbA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.72,347,1580803200"; d="scan'208";a="397179423" Received: from allen-box.sh.intel.com ([10.239.159.139]) by orsmga004.jf.intel.com with ESMTP; 05 Apr 2020 01:34:28 -0700 From: Lu Baolu To: Joerg Roedel Subject: [PATCH 18/19] iommu/vt-d: Report SVA feature with generic flag Date: Sun, 5 Apr 2020 16:30:52 +0800 Message-Id: <20200405083053.17865-19-baolu.lu@linux.intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200405083053.17865-1-baolu.lu@linux.intel.com> References: <20200405083053.17865-1-baolu.lu@linux.intel.com> Cc: iommu@lists.linux-foundation.org X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" From: Jacob Pan Query Shared Virtual Address/Memory capability is a generic feature. SVA feature check is the required first step before calling iommu_sva_bind_device(). VT-d checks SVA feature enabling at per IOMMU level during this step, SVA bind device will check and enable PCI ATS, PRS, and PASID capabilities at device level. This patch reports Intel SVM as SVA feature such that generic code (e.g. Uacce [1]) can use it. [1] https://lkml.org/lkml/2020/1/15/604 Signed-off-by: Jacob Pan Signed-off-by: Lu Baolu --- drivers/iommu/intel-iommu.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c index 3c82fcb50ee7..c79e68ae42a8 100644 --- a/drivers/iommu/intel-iommu.c +++ b/drivers/iommu/intel-iommu.c @@ -5956,6 +5956,14 @@ 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); + + return info && (info->iommu->flags & VTD_FLAG_SVM_CAPABLE) && + info->pasid_supported && info->pri_supported && + info->ats_supported; + } + return false; } @@ -5965,6 +5973,16 @@ 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_SVA) { + struct device_domain_info *info = get_domain_info(dev); + + if (!info) + return -EINVAL; + + if (info->iommu->flags & VTD_FLAG_SVM_CAPABLE) + return 0; + } + return -ENODEV; } -- 2.17.1 _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu