From patchwork Mon Nov 5 07:34:05 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Baolu Lu X-Patchwork-Id: 10667501 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id ADE4913B5 for ; Mon, 5 Nov 2018 07:37:41 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 99CFF290CF for ; Mon, 5 Nov 2018 07:37:41 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 8D3222963E; Mon, 5 Nov 2018 07:37:41 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 354FF290CF for ; Mon, 5 Nov 2018 07:37:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729617AbeKEQz2 (ORCPT ); Mon, 5 Nov 2018 11:55:28 -0500 Received: from mga05.intel.com ([192.55.52.43]:47529 "EHLO mga05.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729293AbeKEQz2 (ORCPT ); Mon, 5 Nov 2018 11:55:28 -0500 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga006.jf.intel.com ([10.7.209.51]) by fmsmga105.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 04 Nov 2018 23:37:08 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.54,467,1534834800"; d="scan'208";a="88618134" Received: from allen-box.sh.intel.com ([10.239.161.122]) by orsmga006.jf.intel.com with ESMTP; 04 Nov 2018 23:37:04 -0800 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, Zeng Xin , iommu@lists.linux-foundation.org, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, Lu Baolu , Jacob Pan Subject: [PATCH v4 5/8] iommu/vt-d: Return ID associated with an auxiliary domain Date: Mon, 5 Nov 2018 15:34:05 +0800 Message-Id: <20181105073408.21815-6-baolu.lu@linux.intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20181105073408.21815-1-baolu.lu@linux.intel.com> References: <20181105073408.21815-1-baolu.lu@linux.intel.com> Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP 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 Signed-off-by: Lu Baolu Signed-off-by: Liu Yi L --- 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 a61b25ad0d3b..49a278a699b0 100644 --- a/drivers/iommu/intel-iommu.c +++ b/drivers/iommu/intel-iommu.c @@ -5576,6 +5576,27 @@ 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, @@ -5592,6 +5613,7 @@ 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,