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=-8.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,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 46123C43441 for ; Fri, 12 Oct 2018 05:19:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 1AAA72075B for ; Fri, 12 Oct 2018 05:19:02 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 1AAA72075B Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727605AbeJLMtj (ORCPT ); Fri, 12 Oct 2018 08:49:39 -0400 Received: from mga11.intel.com ([192.55.52.93]:62493 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726969AbeJLMti (ORCPT ); Fri, 12 Oct 2018 08:49:38 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga008.jf.intel.com ([10.7.209.65]) by fmsmga102.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 11 Oct 2018 22:18:59 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.54,371,1534834800"; d="scan'208";a="80842247" Received: from allen-box.sh.intel.com ([10.239.161.122]) by orsmga008.jf.intel.com with ESMTP; 11 Oct 2018 22:18:55 -0700 From: Lu Baolu To: Joerg Roedel , David Woodhouse , Alex Williamson , Kirti Wankhede Cc: ashok.raj@intel.com, sanjay.k.kumar@intel.com, jacob.jun.pan@intel.com, kevin.tian@intel.com, Jean-Philippe Brucker , yi.l.liu@intel.com, yi.y.sun@intel.com, peterx@redhat.com, tiwei.bie@intel.com, iommu@lists.linux-foundation.org, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, Lu Baolu , Jacob Pan Subject: [PATCH v3 5/8] iommu/vt-d: Return ID associated with an auxiliary domain Date: Fri, 12 Oct 2018 13:16:29 +0800 Message-Id: <20181012051632.26064-6-baolu.lu@linux.intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20181012051632.26064-1-baolu.lu@linux.intel.com> References: <20181012051632.26064-1-baolu.lu@linux.intel.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This adds support to return the default pasid associated with an auxiliary domain. The PCI device which is bound with this domain should use this value as the pasid for all DMA requests of the subset of device which is isolated and protected with this domain. Cc: Ashok Raj Cc: Jacob Pan Cc: Kevin Tian Cc: Liu Yi L Signed-off-by: Lu Baolu --- drivers/iommu/intel-iommu.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c index 3ca42b0e80df..4dc41232a0d6 100644 --- a/drivers/iommu/intel-iommu.c +++ b/drivers/iommu/intel-iommu.c @@ -5553,6 +5553,27 @@ static int intel_iommu_set_dev_attr(struct device *dev, return ret; } +static int intel_iommu_domain_get_attr(struct iommu_domain *domain, + enum iommu_attr attr, void *data) +{ + struct dmar_domain *dmar_domain = to_dmar_domain(domain); + int ret = -EINVAL, *id; + + switch (attr) { + case DOMAIN_ATTR_AUXD_ID: + if (dmar_domain->default_pasid > 0) { + ret = 0; + id = data; + *id = dmar_domain->default_pasid; + } + break; + default: + break; + } + + return ret; +} + const struct iommu_ops intel_iommu_ops = { .capable = intel_iommu_capable, .domain_alloc = intel_iommu_domain_alloc, @@ -5567,6 +5588,7 @@ const struct iommu_ops intel_iommu_ops = { .get_resv_regions = intel_iommu_get_resv_regions, .put_resv_regions = intel_iommu_put_resv_regions, .device_group = pci_device_group, + .domain_get_attr = intel_iommu_domain_get_attr, .get_dev_attr = intel_iommu_get_dev_attr, .set_dev_attr = intel_iommu_set_dev_attr, .pgsize_bitmap = INTEL_IOMMU_PGSIZES, -- 2.17.1