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=-9.7 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=unavailable 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 A55E4C33CB2 for ; Wed, 29 Jan 2020 05:57:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 84ED52063A for ; Wed, 29 Jan 2020 05:57:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726754AbgA2F5Y (ORCPT ); Wed, 29 Jan 2020 00:57:24 -0500 Received: from mga02.intel.com ([134.134.136.20]:33109 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726124AbgA2F4n (ORCPT ); Wed, 29 Jan 2020 00:56:43 -0500 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga008.jf.intel.com ([10.7.209.65]) by orsmga101.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 28 Jan 2020 21:56:42 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.70,376,1574150400"; d="scan'208";a="222346547" Received: from jacob-builder.jf.intel.com ([10.7.199.155]) by orsmga008.jf.intel.com with ESMTP; 28 Jan 2020 21:56:41 -0800 From: Jacob Pan To: iommu@lists.linux-foundation.org, LKML , "Lu Baolu" , Joerg Roedel , David Woodhouse Cc: "Yi Liu" , "Tian, Kevin" , Raj Ashok , Alex Williamson , "Christoph Hellwig" , Jean-Philippe Brucker , Jonathan Cameron , Eric Auger , Jacob Pan Subject: [PATCH V9 10/10] iommu/vt-d: Report PASID format as domain attribute Date: Tue, 28 Jan 2020 22:01:53 -0800 Message-Id: <1580277713-66934-11-git-send-email-jacob.jun.pan@linux.intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1580277713-66934-1-git-send-email-jacob.jun.pan@linux.intel.com> References: <1580277713-66934-1-git-send-email-jacob.jun.pan@linux.intel.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Report the domain attribute of PASID table format. As multiple formats of PASID table entry are supported, it is important for the guest to know which format to use in virtual IOMMU. The result will be used for binding device with guest PASID. Signed-off-by: Liu Yi L Signed-off-by: Jacob Pan --- drivers/iommu/intel-iommu.c | 22 ++++++++++++++++++++++ include/linux/iommu.h | 1 + 2 files changed, 23 insertions(+) diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c index 2f0bf7cc70ce..b3778e86dc32 100644 --- a/drivers/iommu/intel-iommu.c +++ b/drivers/iommu/intel-iommu.c @@ -6413,6 +6413,27 @@ intel_iommu_domain_set_attr(struct iommu_domain *domain, return ret; } +static int intel_iommu_domain_get_attr(struct iommu_domain *domain, + enum iommu_attr attr, void *data) +{ + /* Only used for guest */ + switch (domain->type) { + case IOMMU_DOMAIN_DMA: + return -ENODEV; + case IOMMU_DOMAIN_UNMANAGED: + switch (attr) { + case DOMAIN_ATTR_PASID_FORMAT: + *(int *)data = IOMMU_PASID_FORMAT_INTEL_VTD; + return 0; + default: + return -ENODEV; + } + break; + default: + return -EINVAL; + } +} + const struct iommu_ops intel_iommu_ops = { .capable = intel_iommu_capable, .domain_alloc = intel_iommu_domain_alloc, @@ -6432,6 +6453,7 @@ const struct iommu_ops intel_iommu_ops = { .put_resv_regions = intel_iommu_put_resv_regions, .apply_resv_region = intel_iommu_apply_resv_region, .device_group = pci_device_group, + .domain_get_attr = intel_iommu_domain_get_attr, .dev_has_feat = intel_iommu_dev_has_feat, .dev_feat_enabled = intel_iommu_dev_feat_enabled, .dev_enable_feat = intel_iommu_dev_enable_feat, diff --git a/include/linux/iommu.h b/include/linux/iommu.h index f2223cbb5fd5..9718c109ea0a 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -126,6 +126,7 @@ enum iommu_attr { DOMAIN_ATTR_FSL_PAMUV1, DOMAIN_ATTR_NESTING, /* two stages of translation */ DOMAIN_ATTR_DMA_USE_FLUSH_QUEUE, + DOMAIN_ATTR_PASID_FORMAT, DOMAIN_ATTR_MAX, }; -- 2.7.4