introduce generic iommu_num_pages function

[linux-2.6-omap-h63xx.git] / include / linux / iommu-helper.h

diff --git a/include/linux/iommu-helper.h b/include/linux/iommu-helper.h
index a6d0586e2bf76227488045e7e38267a3f69bc455..3b068e5b56710222f43bd86a3a5f849128526171 100644 (file)
--- a/include/linux/iommu-helper.h
+++ b/include/linux/iommu-helper.h
@@ -23,4 +23,7 @@ extern unsigned long iommu_area_alloc(unsigned long *map, unsigned long size,
 extern void iommu_area_free(unsigned long *map, unsigned long start,
                            unsigned int nr);
 
+extern unsigned long iommu_num_pages(unsigned long addr, unsigned long len,
+                                    unsigned long io_page_size);
+
 #endif