iommu: Add a map_pages() op for IOMMU drivers

[linux-2.6-microblaze.git] / include / linux / iommu.h

diff --git a/include/linux/iommu.h b/include/linux/iommu.h
index 32d4480..d7989d4 100644 (file)
--- a/include/linux/iommu.h
+++ b/include/linux/iommu.h
@@ -180,7 +180,10 @@ struct iommu_iotlb_gather {
  * @attach_dev: attach device to an iommu domain
  * @detach_dev: detach device from an iommu domain
  * @map: map a physically contiguous memory region to an iommu domain
+ * @map_pages: map a physically contiguous set of pages of the same size to
+ *             an iommu domain.
  * @unmap: unmap a physically contiguous memory region from an iommu domain
+ * @unmap_pages: unmap a number of pages of the same size from an iommu domain
  * @flush_iotlb_all: Synchronously flush all hardware TLBs for this domain
  * @iotlb_sync_map: Sync mappings created recently using @map to the hardware
  * @iotlb_sync: Flush all queued ranges from the hardware TLBs and empty flush
@@ -229,8 +232,14 @@ struct iommu_ops {
        void (*detach_dev)(struct iommu_domain *domain, struct device *dev);
        int (*map)(struct iommu_domain *domain, unsigned long iova,
                   phys_addr_t paddr, size_t size, int prot, gfp_t gfp);
+       int (*map_pages)(struct iommu_domain *domain, unsigned long iova,
+                        phys_addr_t paddr, size_t pgsize, size_t pgcount,
+                        int prot, gfp_t gfp, size_t *mapped);
        size_t (*unmap)(struct iommu_domain *domain, unsigned long iova,
                     size_t size, struct iommu_iotlb_gather *iotlb_gather);
+       size_t (*unmap_pages)(struct iommu_domain *domain, unsigned long iova,
+                             size_t pgsize, size_t pgcount,
+                             struct iommu_iotlb_gather *iotlb_gather);
        void (*flush_iotlb_all)(struct iommu_domain *domain);
        void (*iotlb_sync_map)(struct iommu_domain *domain, unsigned long iova,
                               size_t size);