iommu/amd: Implement apply_dm_region call-back

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

Signed-off-by: Joerg Roedel <jroedel@suse.de>

diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
index 1bb59ae2d586ad1ea6c55d62ac0e52443880bdab..4c9063ae442a07a7bfd929dfd3a7b7aba469e57b 100644 (file)
--- a/drivers/iommu/amd_iommu.c
+++ b/drivers/iommu/amd_iommu.c
@@ -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,
 };