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Sat, 14 Jun 2025 00:15:35 -0700 From: Nicolin Chen <nicolinc@nvidia.com> To: <jgg@nvidia.com>, <kevin.tian@intel.com>, <corbet@lwn.net>, <will@kernel.org> CC: <bagasdotme@gmail.com>, <robin.murphy@arm.com>, <joro@8bytes.org>, <thierry.reding@gmail.com>, <vdumpa@nvidia.com>, <jonathanh@nvidia.com>, <shuah@kernel.org>, <jsnitsel@redhat.com>, <nathan@kernel.org>, <peterz@infradead.org>, <yi.l.liu@intel.com>, <mshavit@google.com>, <praan@google.com>, <zhangzekun11@huawei.com>, <iommu@lists.linux.dev>, <linux-doc@vger.kernel.org>, <linux-kernel@vger.kernel.org>, <linux-arm-kernel@lists.infradead.org>, <linux-tegra@vger.kernel.org>, <linux-kselftest@vger.kernel.org>, <patches@lists.linux.dev>, <mochs@nvidia.com>, <alok.a.tiwari@oracle.com>, <vasant.hegde@amd.com>, <dwmw2@infradead.org>, <baolu.lu@linux.intel.com> Subject: [PATCH v6 20/25] iommu/arm-smmu-v3-iommufd: Add hw_info to impl_ops Date: Sat, 14 Jun 2025 00:14:45 -0700 Message-ID: <f36b5e42bac83d0cdf5773cad1c3a44c3eaed396.1749884998.git.nicolinc@nvidia.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <cover.1749884998.git.nicolinc@nvidia.com> References: <cover.1749884998.git.nicolinc@nvidia.com> Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: <linux-kselftest.vger.kernel.org> List-Subscribe: <mailto:linux-kselftest+subscribe@vger.kernel.org> List-Unsubscribe: <mailto:linux-kselftest+unsubscribe@vger.kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-NV-OnPremToCloud: AnonymousSubmission X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BL02EPF0001A0FF:EE_|DM6PR12MB4284:EE_ X-MS-Office365-Filtering-Correlation-Id: 40377587-dae9-475c-e4c2-08ddab134a92 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|36860700013|7416014|376014|1800799024|82310400026; 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iommufd: Add vIOMMU infrastructure (Part-4 HW QUEUE)
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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 07589350b2a1..c408a035e65d 100644 --- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h +++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h @@ -721,6 +721,7 @@ struct arm_smmu_impl_ops { int (*init_structures)(struct arm_smmu_device *smmu); struct arm_smmu_cmdq *(*get_secondary_cmdq)( struct arm_smmu_device *smmu, struct arm_smmu_cmdq_ent *ent); + void *(*hw_info)(struct arm_smmu_device *smmu, u32 *length, u32 *type); const size_t vsmmu_size; const enum iommu_viommu_type vsmmu_type; int (*vsmmu_init)(struct arm_vsmmu *vsmmu, diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-iommufd.c b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-iommufd.c index 445365ae19e0..1c138aff73d1 100644 --- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-iommufd.c +++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-iommufd.c @@ -10,13 +10,17 @@ void *arm_smmu_hw_info(struct device *dev, u32 *length, u32 *type) { struct arm_smmu_master *master = dev_iommu_priv_get(dev); + const struct arm_smmu_impl_ops *impl_ops = master->smmu->impl_ops; struct iommu_hw_info_arm_smmuv3 *info; u32 __iomem *base_idr; unsigned int i; if (*type != IOMMU_HW_INFO_TYPE_DEFAULT && - *type != IOMMU_HW_INFO_TYPE_ARM_SMMUV3) - return ERR_PTR(-EOPNOTSUPP); + *type != IOMMU_HW_INFO_TYPE_ARM_SMMUV3) { + if (!impl_ops || !impl_ops->hw_info) + return ERR_PTR(-EOPNOTSUPP); + return impl_ops->hw_info(master->smmu, length, type); + } info = kzalloc(sizeof(*info), GFP_KERNEL); if (!info)