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Wed, 5 Apr 2023 23:26:20 -0700 From: Nicolin Chen To: , , CC: , , , , , , , , , Subject: [PATCH RFC v1 1/3] iommu: Add set/unset_rid_user ops Date: Wed, 5 Apr 2023 23:25:34 -0700 Message-ID: <1944e8b2226585e309081a541e51addc137e6684.1680762112.git.nicolinc@nvidia.com> X-Mailer: git-send-email 2.40.0 In-Reply-To: References: MIME-Version: 1.0 X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CO1NAM11FT012:EE_|IA1PR12MB9031:EE_ X-MS-Office365-Filtering-Correlation-Id: 23d3829a-a1b7-46a2-ce89-08db3667daaf X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:216.228.118.233;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:dc7edge2.nvidia.com;CAT:NONE;SFS:(13230028)(4636009)(376002)(39860400002)(346002)(136003)(396003)(451199021)(40470700004)(36840700001)(46966006)(8936002)(40480700001)(40460700003)(82740400003)(478600001)(54906003)(70206006)(36860700001)(70586007)(8676002)(4326008)(7636003)(316002)(110136005)(41300700001)(7416002)(5660300002)(356005)(47076005)(83380400001)(186003)(426003)(7696005)(336012)(26005)(6666004)(86362001)(36756003)(82310400005)(2906002)(2616005);DIR:OUT;SFP:1101; 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X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Add a pair of new ops to allow user space to set virtual RID of a device. This can be converted to Stream ID for SMMUv3, so as to create the link between a physical Stream ID and a virtual Stream ID. Signed-off-by: Nicolin Chen --- include/linux/iommu.h | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/include/linux/iommu.h b/include/linux/iommu.h index 080278c8154d..f85ce6f01408 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -248,6 +248,7 @@ struct iommu_iotlb_gather { * driver init to device driver init (default no) * @dev_enable/disable_feat: per device entries to enable/disable * iommu specific features. + * @set/unset_rid_user: per device entries to set/unset user space Request ID * @page_response: handle page request response * @def_domain_type: device default domain type, return value: * - IOMMU_DOMAIN_IDENTITY: must use an identity domain @@ -291,6 +292,9 @@ struct iommu_ops { int (*dev_enable_feat)(struct device *dev, enum iommu_dev_features f); int (*dev_disable_feat)(struct device *dev, enum iommu_dev_features f); + int (*set_rid_user)(struct device *dev, u32 rid, u32 rid_base); + int (*unset_rid_user)(struct device *dev); + int (*page_response)(struct device *dev, struct iommu_fault_event *evt, struct iommu_page_response *msg); 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Wed, 5 Apr 2023 23:26:21 -0700 From: Nicolin Chen To: , , CC: , , , , , , , , , Subject: [PATCH RFC v1 2/3] iommufd: Add IOMMUFD_CMD_DEVICE_SET_RID and IOMMUFD_CMD_DEVICE_UNSET_RID Date: Wed, 5 Apr 2023 23:25:35 -0700 Message-ID: <70520cb453d3a2521fb982776080adf4b2e40047.1680762112.git.nicolinc@nvidia.com> X-Mailer: git-send-email 2.40.0 In-Reply-To: References: MIME-Version: 1.0 X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BN8NAM11FT039:EE_|DM4PR12MB6037:EE_ X-MS-Office365-Filtering-Correlation-Id: 2ea39927-e66c-48a0-622e-08db3667df72 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:216.228.118.232;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:dc7edge1.nvidia.com;CAT:NONE;SFS:(13230028)(4636009)(39860400002)(346002)(376002)(396003)(136003)(451199021)(40470700004)(46966006)(36840700001)(36860700001)(7636003)(8676002)(82740400003)(356005)(70206006)(70586007)(336012)(426003)(7416002)(41300700001)(8936002)(5660300002)(82310400005)(316002)(4326008)(110136005)(47076005)(478600001)(2906002)(40460700003)(54906003)(6666004)(86362001)(83380400001)(186003)(40480700001)(36756003)(7696005)(2616005)(26005);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 06 Apr 2023 06:26:35.9216 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 2ea39927-e66c-48a0-622e-08db3667df72 X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.118.232];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: BN8NAM11FT039.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM4PR12MB6037 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230405_232639_983024_BA2B40FE X-CRM114-Status: GOOD ( 13.81 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Add a new pair of ioctls to allow user space to set user space Request ID for a passthrough PCI device. This is to create a link between a physical RID and a virtual RID in the IOMMU driver that cares. Signed-off-by: Nicolin Chen --- drivers/iommu/iommufd/device.c | 39 +++++++++++++++++++++++++ drivers/iommu/iommufd/iommufd_private.h | 2 ++ drivers/iommu/iommufd/main.c | 4 +++ include/uapi/linux/iommufd.h | 31 ++++++++++++++++++++ 4 files changed, 76 insertions(+) diff --git a/drivers/iommu/iommufd/device.c b/drivers/iommu/iommufd/device.c index 207b0e3fd9c8..db756e5cd77b 100644 --- a/drivers/iommu/iommufd/device.c +++ b/drivers/iommu/iommufd/device.c @@ -735,6 +735,45 @@ void iommufd_device_detach(struct iommufd_device *idev) } EXPORT_SYMBOL_NS_GPL(iommufd_device_detach, IOMMUFD); +int iommufd_device_set_rid(struct iommufd_ucmd *ucmd) +{ + struct iommufd_device_set_rid *cmd = ucmd->cmd; + struct iommufd_device *idev; + const struct iommu_ops *ops; + int rc = 0; + + if (!cmd->rid) + return -EINVAL; + + idev = iommufd_get_device(ucmd, cmd->dev_id); + if (IS_ERR(idev)) + return PTR_ERR(idev); + + ops = dev_iommu_ops(idev->dev); + if (ops && ops->set_rid_user) + rc = ops->set_rid_user(idev->dev, cmd->rid, cmd->rid_base); + iommufd_put_object(&idev->obj); + return rc; +} + +int iommufd_device_unset_rid(struct iommufd_ucmd *ucmd) +{ + struct iommufd_device_unset_rid *cmd = ucmd->cmd; + struct iommufd_device *idev; + const struct iommu_ops *ops; + int rc = 0; + + idev = iommufd_get_device(ucmd, cmd->dev_id); + if (IS_ERR(idev)) + return PTR_ERR(idev); + + ops = dev_iommu_ops(idev->dev); + if (ops && ops->unset_rid_user) + rc = ops->unset_rid_user(idev->dev); + iommufd_put_object(&idev->obj); + return rc; +} + void iommufd_access_destroy_object(struct iommufd_object *obj) { struct iommufd_access *access = diff --git a/drivers/iommu/iommufd/iommufd_private.h b/drivers/iommu/iommufd/iommufd_private.h index e52fd9d8c160..d65617727c0c 100644 --- a/drivers/iommu/iommufd/iommufd_private.h +++ b/drivers/iommu/iommufd/iommufd_private.h @@ -320,6 +320,8 @@ iommufd_get_device(struct iommufd_ucmd *ucmd, u32 id) void iommufd_device_destroy(struct iommufd_object *obj); int iommufd_device_get_hw_info(struct iommufd_ucmd *ucmd); +int iommufd_device_set_rid(struct iommufd_ucmd *ucmd); +int iommufd_device_unset_rid(struct iommufd_ucmd *ucmd); extern const u64 iommufd_hwpt_type_bitmaps[]; diff --git a/drivers/iommu/iommufd/main.c b/drivers/iommu/iommufd/main.c index 7ec3ceac01b3..113fac4d4de0 100644 --- a/drivers/iommu/iommufd/main.c +++ b/drivers/iommu/iommufd/main.c @@ -317,6 +317,10 @@ static const struct iommufd_ioctl_op iommufd_ioctl_ops[] = { val64), IOCTL_OP(IOMMU_VFIO_IOAS, iommufd_vfio_ioas, struct iommu_vfio_ioas, __reserved), + IOCTL_OP(IOMMU_DEVICE_SET_RID, iommufd_device_set_rid, + struct iommufd_device_set_rid, rid_base), + IOCTL_OP(IOMMU_DEVICE_UNSET_RID, iommufd_device_unset_rid, + struct iommufd_device_unset_rid, dev_id), #ifdef CONFIG_IOMMUFD_TEST IOCTL_OP(IOMMU_TEST_CMD, iommufd_test, struct iommu_test_cmd, last), #endif diff --git a/include/uapi/linux/iommufd.h b/include/uapi/linux/iommufd.h index 59a44ceff27d..5188a4318e22 100644 --- a/include/uapi/linux/iommufd.h +++ b/include/uapi/linux/iommufd.h @@ -48,6 +48,8 @@ enum { IOMMUFD_CMD_HWPT_ALLOC, IOMMUFD_CMD_DEVICE_GET_HW_INFO, IOMMUFD_CMD_HWPT_INVALIDATE, + IOMMUFD_CMD_DEVICE_SET_RID, + IOMMUFD_CMD_DEVICE_UNSET_RID, }; /** @@ -482,4 +484,33 @@ struct iommu_hwpt_invalidate { __aligned_u64 data_uptr; }; #define IOMMU_HWPT_INVALIDATE _IO(IOMMUFD_TYPE, IOMMUFD_CMD_HWPT_INVALIDATE) + +/** + * struct iommufd_device_set_rid - ioctl(IOMMU_DEVICE_SET_RID) + * @size: sizeof(struct iommufd_device_set_rid) + * @dev_id: The device to set a Request ID + * @rid: PCI Request ID + * Bits [15:8] are the Bus number. + * Bits [7:3] are the Device number. + * Bits [2:0] are the Function number. + * @rid_base: Base ID to map PCI Request ID + */ +struct iommufd_device_set_rid { + __u32 size; + __u32 dev_id; + __u32 rid; + __u32 rid_base; +}; +#define IOMMU_DEVICE_SET_RID _IO(IOMMUFD_TYPE, IOMMUFD_CMD_DEVICE_SET_RID) + +/** + * struct iommufd_device_unset_rid - ioctl(IOMMU_DEVICE_UNSET_RID) + * @size: sizeof(struct iommufd_device_unset_rid) + * @dev_id: The device to unset a Request ID + */ +struct iommufd_device_unset_rid { + __u32 size; + __u32 dev_id; +}; +#define IOMMU_DEVICE_UNSET_RID _IO(IOMMUFD_TYPE, IOMMUFD_CMD_DEVICE_UNSET_RID) #endif From patchwork Thu Apr 6 06:25:36 2023 Content-Type: text/plain; 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Wed, 5 Apr 2023 23:26:21 -0700 From: Nicolin Chen To: , , CC: , , , , , , , , , Subject: [PATCH RFC v1 3/3] iommu/arm-smmu-v3: Implement set_rid_user and unset_rid_user Date: Wed, 5 Apr 2023 23:25:36 -0700 Message-ID: <2f00c7faa5c8ddfb4b94e85d3c5af7a0fa8df35d.1680762112.git.nicolinc@nvidia.com> X-Mailer: git-send-email 2.40.0 In-Reply-To: References: MIME-Version: 1.0 X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BN8NAM11FT039:EE_|MN0PR12MB6056:EE_ X-MS-Office365-Filtering-Correlation-Id: b7f1a9c2-1c8d-410f-e396-08db3667dff7 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:216.228.118.232;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:dc7edge1.nvidia.com;CAT:NONE;SFS:(13230028)(4636009)(376002)(396003)(346002)(39860400002)(136003)(451199021)(40470700004)(46966006)(36840700001)(478600001)(8676002)(70206006)(110136005)(316002)(70586007)(54906003)(6666004)(4326008)(7636003)(2906002)(82310400005)(40460700003)(5660300002)(356005)(7416002)(41300700001)(8936002)(40480700001)(82740400003)(36860700001)(86362001)(7696005)(2616005)(26005)(426003)(336012)(47076005)(36756003)(186003)(83380400001);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 06 Apr 2023 06:26:36.8278 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: b7f1a9c2-1c8d-410f-e396-08db3667dff7 X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.118.232];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: BN8NAM11FT039.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN0PR12MB6056 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230405_232639_915688_CF78553C X-CRM114-Status: GOOD ( 14.57 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Implement the new set_rid_user and unset_rid_user ops, by using an xarray to store the stream pointer indexed by a given user space Stream ID. This will be used by user cache invalidation hypercall, to check the SID field of an ATC_INV command and replace it with the corresponding physical SID. Signed-off-by: Nicolin Chen --- drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 45 +++++++++++++++++++++ drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h | 2 + 2 files changed, 47 insertions(+) diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c index f2425b0f0cd6..17bb90e78547 100644 --- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c +++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c @@ -2843,6 +2843,48 @@ static void arm_smmu_remove_dev_pasid(struct device *dev, ioasid_t pasid) arm_smmu_sva_remove_dev_pasid(domain, dev, pasid); } +static int arm_smmu_set_rid_user(struct device *dev, u32 rid, u32 rid_base) +{ + struct arm_smmu_master *master = dev_iommu_priv_get(dev); + struct arm_smmu_stream *stream = &master->streams[0]; + struct arm_smmu_device *smmu = master->smmu; + u32 sid_user = rid_base | rid; + int ret = 0; + + if (!sid_user) + return -EINVAL; + + ret = xa_alloc(&smmu->streams_user, &sid_user, stream, + XA_LIMIT(sid_user, sid_user), GFP_KERNEL_ACCOUNT); + if (ret) + return ret; + stream->id_user = sid_user; + return 0; +} + +static int arm_smmu_unset_rid_user(struct device *dev) +{ + struct arm_smmu_master *master = dev_iommu_priv_get(dev); + struct arm_smmu_stream *stream = &master->streams[0]; + struct arm_smmu_device *smmu = master->smmu; + u32 sid_user = stream->id_user; + + if (!sid_user) + return -ENODEV; + + xa_lock(&smmu->streams_user); + stream = __xa_erase(&smmu->streams_user, sid_user); + if (stream != master->streams) { + WARN_ON(__xa_alloc(&smmu->streams_user, &sid_user, stream, + XA_LIMIT(sid_user, sid_user), + GFP_KERNEL_ACCOUNT)); + xa_unlock(&smmu->streams_user); + return -EINVAL; + } + xa_unlock(&smmu->streams_user); + return 0; +} + static struct iommu_ops arm_smmu_ops = { .capable = arm_smmu_capable, .domain_alloc = arm_smmu_domain_alloc, @@ -2854,6 +2896,8 @@ static struct iommu_ops arm_smmu_ops = { .remove_dev_pasid = arm_smmu_remove_dev_pasid, .dev_enable_feat = arm_smmu_dev_enable_feature, .dev_disable_feat = arm_smmu_dev_disable_feature, + .set_rid_user = arm_smmu_set_rid_user, + .unset_rid_user = arm_smmu_unset_rid_user, .page_response = arm_smmu_page_response, .def_domain_type = arm_smmu_def_domain_type, .pgsize_bitmap = -1UL, /* Restricted during device attach */ @@ -3082,6 +3126,7 @@ static int arm_smmu_init_structures(struct arm_smmu_device *smmu) mutex_init(&smmu->streams_mutex); smmu->streams = RB_ROOT; + xa_init_flags(&smmu->streams_user, XA_FLAGS_ALLOC1 | XA_FLAGS_ACCOUNT); ret = arm_smmu_init_queues(smmu); if (ret) diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h index 8d772ea8a583..8ccea2e84bbb 100644 --- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h +++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h @@ -674,10 +674,12 @@ struct arm_smmu_device { struct rb_root streams; struct mutex streams_mutex; + struct xarray streams_user; }; struct arm_smmu_stream { u32 id; + u32 id_user; struct arm_smmu_master *master; struct rb_node node; };