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iommu/arm-smmu-v3: Make the blocked domain support PASID

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The blocked domain is used to park RID to be blocking DMA state. This
can be extended to PASID as well. By this, the remove_dev_pasid() op
of ARM SMMUv3 can be dropped.

Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Reviewed-by: Nicolin Chen <nicolinc@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Yi Liu <yi.l.liu@intel.com>
Link: https://lore.kernel.org/r/20241204122928.11987-5-yi.l.liu@intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Jason Gunthorpe
2024-12-04 04:29:25 -08:00
committed by Joerg Roedel
parent b18301b915
commit ef181762cb
1 changed files with 6 additions and 6 deletions
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12
drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
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@@ -3016,13 +3016,12 @@ int arm_smmu_set_pasid(struct arm_smmu_master *master,
return ret;
}
static void arm_smmu_remove_dev_pasid(struct device *dev, ioasid_t pasid,
struct iommu_domain *domain)
static int arm_smmu_blocking_set_dev_pasid(struct iommu_domain *new_domain,
struct device *dev, ioasid_t pasid,
struct iommu_domain *old_domain)
{
struct arm_smmu_domain *smmu_domain = to_smmu_domain(old_domain);
struct arm_smmu_master *master = dev_iommu_priv_get(dev);
struct arm_smmu_domain *smmu_domain;
smmu_domain = to_smmu_domain(domain);
mutex_lock(&arm_smmu_asid_lock);
arm_smmu_clear_cd(master, pasid);
@@ -3043,6 +3042,7 @@ static void arm_smmu_remove_dev_pasid(struct device *dev, ioasid_t pasid,
sid_domain->type == IOMMU_DOMAIN_BLOCKED)
sid_domain->ops->attach_dev(sid_domain, dev);
}
return 0;
}
static void arm_smmu_attach_dev_ste(struct iommu_domain *domain,
@@ -3124,6 +3124,7 @@ static int arm_smmu_attach_dev_blocked(struct iommu_domain *domain,
static const struct iommu_domain_ops arm_smmu_blocked_ops = {
.attach_dev = arm_smmu_attach_dev_blocked,
.set_dev_pasid = arm_smmu_blocking_set_dev_pasid,
};
static struct iommu_domain arm_smmu_blocked_domain = {
@@ -3551,7 +3552,6 @@ static struct iommu_ops arm_smmu_ops = {
.device_group = arm_smmu_device_group,
.of_xlate = arm_smmu_of_xlate,
.get_resv_regions = arm_smmu_get_resv_regions,
.remove_dev_pasid = arm_smmu_remove_dev_pasid,
.dev_enable_feat = arm_smmu_dev_enable_feature,
.dev_disable_feat = arm_smmu_dev_disable_feature,
.page_response = arm_smmu_page_response,