iommu/tegra: Implement DOMAIN_ATTR_GEOMETRY attribute

Implement the attribute for the Tegra IOMMU drivers. Signed-off-by: Hiroshi DOYU <hdoyu@nvidia.com> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
mariux64 · Jul 11, 2012 · 2334990 · 2334990
1 parent 4be6a29
commit 2334990
Show file tree

Hide file tree

Showing 2 changed files with 10 additions and 0 deletions.
diff --git a/drivers/iommu/tegra-gart.c b/drivers/iommu/tegra-gart.c
@@ -165,6 +165,11 @@ static int gart_iommu_attach_dev(struct iommu_domain *domain,
 		return -EINVAL;
 	domain->priv = gart;
 
+	domain->geometry.aperture_start = gart->iovmm_base;
+	domain->geometry.aperture_end   = gart->iovmm_base +
+					gart->page_count * GART_PAGE_SIZE - 1;
+	domain->geometry.force_aperture = true;
+
 	client = devm_kzalloc(gart->dev, sizeof(*c), GFP_KERNEL);
 	if (!client)
 		return -ENOMEM;

diff --git a/drivers/iommu/tegra-smmu.c b/drivers/iommu/tegra-smmu.c
@@ -807,6 +807,11 @@ static int smmu_iommu_domain_init(struct iommu_domain *domain)
 	spin_unlock_irqrestore(&as->lock, flags);
 	domain->priv = as;
 
+	domain->geometry.aperture_start = smmu->iovmm_base;
+	domain->geometry.aperture_end   = smmu->iovmm_base +
+		smmu->page_count * SMMU_PAGE_SIZE - 1;
+	domain->geometry.force_aperture = true;
+
 	dev_dbg(smmu->dev, "smmu_as@%p\n", as);
 	return 0;