iommu/amd: Implement DOMAIN_ATTR_GEOMETRY attribute
Implement the attribute itself and add the code for the
AMD IOMMU driver.
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c
index c39972d..ed5e0a5 100644
--- a/drivers/iommu/iommu.c
+++ b/drivers/iommu/iommu.c
@@ -348,10 +348,23 @@
int iommu_domain_get_attr(struct iommu_domain *domain,
enum iommu_attr attr, void *data)
{
- if (!domain->ops->domain_get_attr)
- return -EINVAL;
+ struct iommu_domain_geometry *geometry;
+ int ret = 0;
- return domain->ops->domain_get_attr(domain, attr, data);
+ switch (attr) {
+ case DOMAIN_ATTR_GEOMETRY:
+ geometry = data;
+ *geometry = domain->geometry;
+
+ break;
+ default:
+ if (!domain->ops->domain_get_attr)
+ return -EINVAL;
+
+ ret = domain->ops->domain_get_attr(domain, attr, data);
+ }
+
+ return ret;
}
EXPORT_SYMBOL_GPL(iommu_domain_get_attr);