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iommu/arm-smmu: Implement iommu_ops->def_domain_type call-back

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Implement the new def_domain_type call-back for the ARM
SMMU driver. We need this to support requesting the domain
type by the client devices.

Signed-off-by: Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Link: https://lore.kernel.org/r/28c5d101cc4ac29aff3553ecec7cf256d0907ed7.1587407458.git.saiprakash.ranjan@codeaurora.org
Signed-off-by: Will Deacon <will@kernel.org>
This commit is contained in:
Sai Prakash Ranjan 2020-04-21 00:03:50 +05:30 committed by Will Deacon
parent 64510ede36
commit 232c5ae8a3
2 changed files with 13 additions and 0 deletions
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12
drivers/iommu/arm-smmu.c
View file

@ -1609,6 +1609,17 @@ static void arm_smmu_get_resv_regions(struct device *dev,
iommu_dma_get_resv_regions(dev, head);
}
static int arm_smmu_def_domain_type(struct device *dev)
{
struct arm_smmu_master_cfg *cfg = dev_iommu_priv_get(dev);
const struct arm_smmu_impl *impl = cfg->smmu->impl;
if (impl && impl->def_domain_type)
return impl->def_domain_type(dev);
return 0;
}
static struct iommu_ops arm_smmu_ops = {
.capable = arm_smmu_capable,
.domain_alloc = arm_smmu_domain_alloc,
@ -1627,6 +1638,7 @@ static struct iommu_ops arm_smmu_ops = {
.of_xlate = arm_smmu_of_xlate,
.get_resv_regions = arm_smmu_get_resv_regions,
.put_resv_regions = generic_iommu_put_resv_regions,
.def_domain_type = arm_smmu_def_domain_type,
.pgsize_bitmap = -1UL, /* Restricted during device attach */
};

1
drivers/iommu/arm-smmu.h
View file

@ -386,6 +386,7 @@ struct arm_smmu_impl {
int (*init_context)(struct arm_smmu_domain *smmu_domain);
void (*tlb_sync)(struct arm_smmu_device *smmu, int page, int sync,
int status);
int (*def_domain_type)(struct device *dev);
};
static inline void __iomem *arm_smmu_page(struct arm_smmu_device *smmu, int n)