x86, ia64: convert to use generic dma_map_ops struct

This converts X86 and IA64 to use include/linux/dma-mapping.h.

It's a bit large but pretty boring. The major change for X86 is
converting 'int dir' to 'enum dma_data_direction dir' in DMA mapping
operations. The major changes for IA64 is using map_page and
unmap_page instead of map_single and unmap_single.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/include/linux/swiotlb.h b/include/linux/swiotlb.h
index dedd3c0..0567c3d 100644
--- a/include/linux/swiotlb.h
+++ b/include/linux/swiotlb.h
@@ -66,36 +66,38 @@
 
 extern int
 swiotlb_map_sg_attrs(struct device *hwdev, struct scatterlist *sgl, int nelems,
-		     int dir, struct dma_attrs *attrs);
+		     enum dma_data_direction dir, struct dma_attrs *attrs);
 
 extern void
 swiotlb_unmap_sg_attrs(struct device *hwdev, struct scatterlist *sgl,
-		       int nelems, int dir, struct dma_attrs *attrs);
+		       int nelems, enum dma_data_direction dir,
+		       struct dma_attrs *attrs);
 
 extern void
 swiotlb_sync_single_for_cpu(struct device *hwdev, dma_addr_t dev_addr,
-			    size_t size, int dir);
+			    size_t size, enum dma_data_direction dir);
 
 extern void
 swiotlb_sync_sg_for_cpu(struct device *hwdev, struct scatterlist *sg,
-			int nelems, int dir);
+			int nelems, enum dma_data_direction dir);
 
 extern void
 swiotlb_sync_single_for_device(struct device *hwdev, dma_addr_t dev_addr,
-			       size_t size, int dir);
+			       size_t size, enum dma_data_direction dir);
 
 extern void
 swiotlb_sync_sg_for_device(struct device *hwdev, struct scatterlist *sg,
-			   int nelems, int dir);
+			   int nelems, enum dma_data_direction dir);
 
 extern void
 swiotlb_sync_single_range_for_cpu(struct device *hwdev, dma_addr_t dev_addr,
-				  unsigned long offset, size_t size, int dir);
+				  unsigned long offset, size_t size,
+				  enum dma_data_direction dir);
 
 extern void
 swiotlb_sync_single_range_for_device(struct device *hwdev, dma_addr_t dev_addr,
 				     unsigned long offset, size_t size,
-				     int dir);
+				     enum dma_data_direction dir);
 
 extern int
 swiotlb_dma_mapping_error(struct device *hwdev, dma_addr_t dma_addr);