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diff --git a/include/asm-i386/mach-xen/asm/swiotlb.h b/include/asm-i386/mach-xen/asm/swiotlb.h
new file mode 100644
index 000000000..9a36815ac
--- /dev/null
+++ b/include/asm-i386/mach-xen/asm/swiotlb.h
@@ -0,0 +1,44 @@
+#ifndef _ASM_SWIOTLB_H
+#define _ASM_SWIOTLB_H 1
+
+#include <linux/config.h>
+#include <asm/scatterlist.h>
+
+/* SWIOTLB interface */
+
+extern dma_addr_t swiotlb_map_single(struct device *hwdev, void *ptr, size_t size,
+				      int dir);
+extern void swiotlb_unmap_single(struct device *hwdev, dma_addr_t dev_addr,
+				  size_t size, int dir);
+extern void swiotlb_sync_single_for_cpu(struct device *hwdev,
+					 dma_addr_t dev_addr,
+					 size_t size, int dir);
+extern void swiotlb_sync_single_for_device(struct device *hwdev,
+					    dma_addr_t dev_addr,
+					    size_t size, int dir);
+extern void swiotlb_sync_sg_for_cpu(struct device *hwdev,
+				     struct scatterlist *sg, int nelems,
+				     int dir);
+extern void swiotlb_sync_sg_for_device(struct device *hwdev,
+					struct scatterlist *sg, int nelems,
+					int dir);
+extern int swiotlb_map_sg(struct device *hwdev, struct scatterlist *sg,
+		      int nents, int direction);
+extern void swiotlb_unmap_sg(struct device *hwdev, struct scatterlist *sg,
+			 int nents, int direction);
+extern int swiotlb_dma_mapping_error(dma_addr_t dma_addr);
+extern dma_addr_t swiotlb_map_page(struct device *hwdev, struct page *page,
+                                   unsigned long offset, size_t size,
+                                   enum dma_data_direction direction);
+extern void swiotlb_unmap_page(struct device *hwdev, dma_addr_t dma_address,
+                               size_t size, enum dma_data_direction direction);
+extern int swiotlb_dma_supported(struct device *hwdev, u64 mask);
+extern void swiotlb_init(void);
+
+#ifdef CONFIG_SWIOTLB
+extern int swiotlb;
+#else
+#define swiotlb 0
+#endif
+
+#endif