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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id B1C20C433FE for ; Mon, 2 May 2022 01:52:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1356524AbiEBBzq (ORCPT ); Sun, 1 May 2022 21:55:46 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51936 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1356807AbiEBBzl (ORCPT ); Sun, 1 May 2022 21:55:41 -0400 Received: from mga18.intel.com (mga18.intel.com [134.134.136.126]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 560311EEEE for ; Sun, 1 May 2022 18:52:09 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1651456330; x=1682992330; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=mzTtaAStsMU4y588iYABmQJ+1EZsf0v9Q75YY8ToPeM=; b=DVm11VPmJpX7HG7DsKgY2FqnljjUmE0BA2OFcdeGRN0lvCIDP2TyLgce oA90Ge5Hff4fyS1m9zlrwP0483AwmARPDayaXPju53U1FgwhjeSQCUsXk cTq1k3T4B0yL2rh34xNPq7hcSGF1c7N3PpiDb4QVyzkViz0ppjVYWZZSQ sPMMy9jKrxUmu2fmr/+G8DB1k6zl7KonNvuF+i6deyxio9FbMu2lg8BhB oCUncPONQUPXDeteoLiz1cZw8vJnprWBf/9mlMGvJTJznk4O0fkzcRW+O XfBJFPgIrDQqgim+pwT0rjcCRzl3jXXqux5CWP5pgfGM0ksa8QIYY3kik g==; X-IronPort-AV: E=McAfee;i="6400,9594,10334"; a="249062067" X-IronPort-AV: E=Sophos;i="5.91,190,1647327600"; d="scan'208";a="249062067" Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by orsmga106.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 01 May 2022 18:52:08 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.91,190,1647327600"; d="scan'208";a="707406492" Received: from allen-box.sh.intel.com ([10.239.159.48]) by fmsmga001.fm.intel.com with ESMTP; 01 May 2022 18:52:05 -0700 From: Lu Baolu To: Joerg Roedel , Jason Gunthorpe , Christoph Hellwig , Kevin Tian , Ashok Raj , Will Deacon , Robin Murphy , Jean-Philippe Brucker , Dave Jiang , Vinod Koul Cc: Eric Auger , Liu Yi L , Jacob jun Pan , iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org, Lu Baolu Subject: [PATCH v5 06/12] iommu/vt-d: Add SVA domain support Date: Mon, 2 May 2022 09:48:36 +0800 Message-Id: <20220502014842.991097-7-baolu.lu@linux.intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220502014842.991097-1-baolu.lu@linux.intel.com> References: <20220502014842.991097-1-baolu.lu@linux.intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add support for SVA domain allocation and provide an SVA-specific iommu_domain_ops. Signed-off-by: Lu Baolu --- include/linux/intel-iommu.h | 1 + drivers/iommu/intel/iommu.c | 10 ++++++++++ drivers/iommu/intel/svm.c | 37 +++++++++++++++++++++++++++++++++++++ 3 files changed, 48 insertions(+) diff --git a/include/linux/intel-iommu.h b/include/linux/intel-iommu.h index 72e5d7900e71..3b4ca16f53e2 100644 --- a/include/linux/intel-iommu.h +++ b/include/linux/intel-iommu.h @@ -744,6 +744,7 @@ void intel_svm_unbind(struct iommu_sva *handle); u32 intel_svm_get_pasid(struct iommu_sva *handle); int intel_svm_page_response(struct device *dev, struct iommu_fault_event *evt, struct iommu_page_response *msg); +extern const struct iommu_domain_ops intel_svm_domain_ops; struct intel_svm_dev { struct list_head list; diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c index 170eb777d57b..5d1d3e325afa 100644 --- a/drivers/iommu/intel/iommu.c +++ b/drivers/iommu/intel/iommu.c @@ -4330,6 +4330,16 @@ static struct iommu_domain *intel_iommu_domain_alloc(unsigned type) return domain; case IOMMU_DOMAIN_IDENTITY: return &si_domain->domain; +#ifdef CONFIG_INTEL_IOMMU_SVM + case IOMMU_DOMAIN_SVA: + dmar_domain = alloc_domain(type); + if (!dmar_domain) + return NULL; + domain = &dmar_domain->domain; + domain->ops = &intel_svm_domain_ops; + + return domain; +#endif /* CONFIG_INTEL_IOMMU_SVM */ default: return NULL; } diff --git a/drivers/iommu/intel/svm.c b/drivers/iommu/intel/svm.c index 574ddddaa33a..ec684d883014 100644 --- a/drivers/iommu/intel/svm.c +++ b/drivers/iommu/intel/svm.c @@ -931,3 +931,40 @@ int intel_svm_page_response(struct device *dev, mutex_unlock(&pasid_mutex); return ret; } + +static int intel_svm_attach_dev_pasid(struct iommu_domain *domain, + struct device *dev, ioasid_t pasid) +{ + struct device_domain_info *info = dev_iommu_priv_get(dev); + struct mm_struct *mm = iommu_sva_domain_mm(domain); + struct intel_iommu *iommu = info->iommu; + struct iommu_sva *sva; + int ret = 0; + + mutex_lock(&pasid_mutex); + sva = intel_svm_bind_mm(iommu, dev, mm); + if (IS_ERR(sva)) + ret = PTR_ERR(sva); + mutex_unlock(&pasid_mutex); + + return ret; +} + +static void intel_svm_detach_dev_pasid(struct iommu_domain *domain, + struct device *dev, ioasid_t pasid) +{ + mutex_lock(&pasid_mutex); + intel_svm_unbind_mm(dev, pasid); + mutex_unlock(&pasid_mutex); +} + +static void intel_svm_domain_free(struct iommu_domain *domain) +{ + kfree(to_dmar_domain(domain)); +} + +const struct iommu_domain_ops intel_svm_domain_ops = { + .attach_dev_pasid = intel_svm_attach_dev_pasid, + .detach_dev_pasid = intel_svm_detach_dev_pasid, + .free = intel_svm_domain_free, +}; -- 2.25.1