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Commit 8d54d6c8 authored by Joerg Roedel's avatar Joerg Roedel
Browse files

iommu/amd: Implement apply_dm_region call-back 



It is used to reserve the dm-regions in the iova-tree.

Signed-off-by: default avatarJoerg Roedel <jroedel@suse.de>
parent 81cd07b9

drivers/iommu/amd_iommu.c

+15 −0
Original line number Diff line number Diff line
@@ -3385,6 +3385,20 @@ static void amd_iommu_put_dm_regions(struct device *dev, 
		kfree(entry);

}



static void amd_iommu_apply_dm_region(struct device *dev,

				      struct iommu_domain *domain,

				      struct iommu_dm_region *region)

{

	struct protection_domain *pdomain = to_pdomain(domain);

	struct dma_ops_domain *dma_dom = pdomain->priv;

	unsigned long start, end;



	start = IOVA_PFN(region->start);

	end   = IOVA_PFN(region->start + region->length);



	WARN_ON_ONCE(reserve_iova(&dma_dom->iovad, start, end) == NULL);

}



static const struct iommu_ops amd_iommu_ops = {

	.capable = amd_iommu_capable,

	.domain_alloc = amd_iommu_domain_alloc,
@@ -3400,6 +3414,7 @@ static const struct iommu_ops amd_iommu_ops = { 
	.device_group = amd_iommu_device_group,

	.get_dm_regions = amd_iommu_get_dm_regions,

	.put_dm_regions = amd_iommu_put_dm_regions,

	.apply_dm_region = amd_iommu_apply_dm_region,

	.pgsize_bitmap	= AMD_IOMMU_PGSIZES,

};