iommu/arm-smmu-v3: Enhance domain_alloc_user() to allocate PASID capable domain

Core layer is modified to call domain_alloc_user() to allocate PASID
capable domain. Enhance arm_smmu_domain_alloc_user() to allocate
PASID capable domain based on the 'flags' parameter.

Signed-off-by: Vasant Hegde <vasant.hegde@amd.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Link: https://lore.kernel.org/r/20241028093810.5901-5-vasant.hegde@amd.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>

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 737c5b88235510e3ddb91a28cecbdcdc14854b32..8a193141f003d7fa1beaf8848b268d3fd5939fae 100644 (file)
--- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
+++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
@@ -3084,7 +3084,8 @@ arm_smmu_domain_alloc_user(struct device *dev, u32 flags,
                           const struct iommu_user_data *user_data)
 {
        struct arm_smmu_master *master = dev_iommu_priv_get(dev);
-       const u32 PAGING_FLAGS = IOMMU_HWPT_ALLOC_DIRTY_TRACKING;
+       const u32 PAGING_FLAGS = IOMMU_HWPT_ALLOC_DIRTY_TRACKING |
+                                       IOMMU_HWPT_ALLOC_PASID;
        struct arm_smmu_domain *smmu_domain;
        int ret;
 
@@ -3093,6 +3094,9 @@ arm_smmu_domain_alloc_user(struct device *dev, u32 flags,
        if (parent || user_data)
                return ERR_PTR(-EOPNOTSUPP);
 
+       if (flags & IOMMU_HWPT_ALLOC_PASID)
+               return arm_smmu_domain_alloc_paging(dev);
+
        smmu_domain = arm_smmu_domain_alloc();
        if (IS_ERR(smmu_domain))
                return ERR_CAST(smmu_domain);