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/include/linux/iommu.h b/include/linux/iommu.h
index 0eef096..f7df4aa 100644
--- a/include/linux/iommu.h
+++ b/include/linux/iommu.h
@@ -37,11 +37,18 @@
typedef int (*iommu_fault_handler_t)(struct iommu_domain *,
struct device *, unsigned long, int, void *);
+struct iommu_domain_geometry {
+ dma_addr_t aperture_start; /* First address that can be mapped */
+ dma_addr_t aperture_end; /* Last address that can be mapped */
+ bool force_aperture; /* DMA only allowed in mappable range? */
+};
+
struct iommu_domain {
struct iommu_ops *ops;
void *priv;
iommu_fault_handler_t handler;
void *handler_token;
+ struct iommu_domain_geometry geometry;
};
#define IOMMU_CAP_CACHE_COHERENCY 0x1
@@ -49,6 +56,7 @@
enum iommu_attr {
DOMAIN_ATTR_MAX,
+ DOMAIN_ATTR_GEOMETRY,
};
#ifdef CONFIG_IOMMU_API