Commit 232c5ae8 authored by Sai Prakash Ranjan's avatar Sai Prakash Ranjan Committed by Will Deacon
Browse files

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



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: default avatarSai Prakash Ranjan <saiprakash.ranjan@codeaurora.org>
Reviewed-by: default avatarRobin Murphy <robin.murphy@arm.com>
Link: https://lore.kernel.org/r/28c5d101cc4ac29aff3553ecec7cf256d0907ed7.1587407458.git.saiprakash.ranjan@codeaurora.org


Signed-off-by: default avatarWill Deacon <will@kernel.org>
parent 64510ede

drivers/iommu/arm-smmu.c

+12 −0
Original line number Diff line number Diff line
@@ -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 */

};

drivers/iommu/arm-smmu.h

+1 −0
Original line number Diff line number Diff line
@@ -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)

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