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Wed, 23 Sep 2020 10:11:53 +0000 From: Suravee Suthikulpanit To: linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org Cc: joro@8bytes.org, Suravee Suthikulpanit Subject: [PATCH 13/13] iommu: amd: Adopt IO page table framework Date: Wed, 23 Sep 2020 10:14:42 +0000 Message-Id: <20200923101442.73157-14-suravee.suthikulpanit@amd.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200923101442.73157-1-suravee.suthikulpanit@amd.com> References: <20200923101442.73157-1-suravee.suthikulpanit@amd.com> Content-Type: text/plain X-Originating-IP: [165.204.78.2] X-ClientProxiedBy: SN4PR0601CA0003.namprd06.prod.outlook.com (2603:10b6:803:2f::13) To DM5PR12MB1163.namprd12.prod.outlook.com (2603:10b6:3:7a::18) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from ethanolx5673host.amd.com (165.204.78.2) by SN4PR0601CA0003.namprd06.prod.outlook.com (2603:10b6:803:2f::13) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3412.20 via Frontend Transport; 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Signed-off-by: Suravee Suthikulpanit --- drivers/iommu/amd/amd_iommu.h | 3 +++ drivers/iommu/amd/iommu.c | 10 ++++++++++ 2 files changed, 13 insertions(+) diff --git a/drivers/iommu/amd/amd_iommu.h b/drivers/iommu/amd/amd_iommu.h index 2e8dc2a1ec0f..046ea81a3b77 100644 --- a/drivers/iommu/amd/amd_iommu.h +++ b/drivers/iommu/amd/amd_iommu.h @@ -127,4 +127,7 @@ static inline void amd_iommu_apply_ivrs_quirks(void) { } extern void amd_iommu_domain_set_pgtable(struct protection_domain *domain, u64 *root, int mode); extern void amd_iommu_free_pgtable(struct amd_io_pgtable *pgtable); +extern struct io_pgtable_ops * +amd_iommu_setup_io_pgtable_ops(struct iommu_dev_data *dev_data, + struct protection_domain *pdom); #endif diff --git a/drivers/iommu/amd/iommu.c b/drivers/iommu/amd/iommu.c index 77f44b927ae7..df304d8a630a 100644 --- a/drivers/iommu/amd/iommu.c +++ b/drivers/iommu/amd/iommu.c @@ -32,6 +32,7 @@ #include #include #include +#include #include #include #include @@ -1580,6 +1581,7 @@ static int pdev_iommuv2_enable(struct pci_dev *pdev) static int attach_device(struct device *dev, struct protection_domain *domain) { + struct io_pgtable_ops *pgtbl_ops; struct iommu_dev_data *dev_data; struct pci_dev *pdev; unsigned long flags; @@ -1623,6 +1625,12 @@ static int attach_device(struct device *dev, skip_ats_check: ret = 0; + pgtbl_ops = amd_iommu_setup_io_pgtable_ops(dev_data, domain); + if (!pgtbl_ops) { + ret = -ENOMEM; + goto out; + } + do_attach(dev_data, domain); /* @@ -1958,6 +1966,8 @@ static void amd_iommu_domain_free(struct iommu_domain *dom) if (domain->dev_cnt > 0) cleanup_domain(domain); + free_io_pgtable_ops(&domain->iop.iop.ops); + BUG_ON(domain->dev_cnt != 0); if (!dom) -- 2.17.1