[PATCH] m68knommu: implement scatter/gather support macros

Implement the scattergather support macros for m68knommu targets.
Patch originally submitted by Leon Woestenberg <leonw@mailcan.com>.
Signed-off-by: NGreg Ungerer <gerg@uclinux.com>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

include/asm-m68knommu/scatterlist.h

 #ifndef _M68KNOMMU_SCATTERLIST_H
 #define _M68KNOMMU_SCATTERLIST_H
 
+#include <linux/mm.h>
+
 struct scatterlist {
 	struct page	*page;
 	unsigned int	offset;
@@ -8,6 +10,10 @@ struct scatterlist {
 	unsigned int	length;
 };
 
+#define sg_address(sg) (page_address((sg)->page) + (sg)->offset
+#define sg_dma_address(sg)      ((sg)->dma_address)
+#define sg_dma_len(sg)          ((sg)->length)
+
 #define ISA_DMA_THRESHOLD	(0xffffffff)
 
 #endif /* !(_M68KNOMMU_SCATTERLIST_H) */