From 0291df8cc9dac09c303d21d5bcd2ad73762c836a Mon Sep 17 00:00:00 2001 From: FUJITA Tomonori Date: Mon, 4 Feb 2008 22:28:07 -0800 Subject: iommu sg: add IOMMU helper functions for the free area management This adds IOMMU helper functions for the free area management. These functions take care of LLD's segment boundary limit for IOMMUs. They would be useful for IOMMUs that use bitmap for the free area management. Signed-off-by: FUJITA Tomonori Cc: Jeff Garzik Cc: James Bottomley Cc: Jens Axboe Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/iommu-helper.h | 7 +++++++ 1 file changed, 7 insertions(+) create mode 100644 include/linux/iommu-helper.h (limited to 'include/linux/iommu-helper.h') diff --git a/include/linux/iommu-helper.h b/include/linux/iommu-helper.h new file mode 100644 index 000000000000..4dd4c04ff2f4 --- /dev/null +++ b/include/linux/iommu-helper.h @@ -0,0 +1,7 @@ +extern unsigned long iommu_area_alloc(unsigned long *map, unsigned long size, + unsigned long start, unsigned int nr, + unsigned long shift, + unsigned long boundary_size, + unsigned long align_mask); +extern void iommu_area_free(unsigned long *map, unsigned long start, + unsigned int nr); -- cgit