1#ifndef __LINUX_SWIOTLB_XEN_H
2#define __LINUX_SWIOTLB_XEN_H
3
4#include <linux/dma-direction.h>
5#include <linux/swiotlb.h>
6
7extern int xen_swiotlb_init(int verbose, bool early);
8
9extern void
10*xen_swiotlb_alloc_coherent(struct device *hwdev, size_t size,
11			    dma_addr_t *dma_handle, gfp_t flags,
12			    struct dma_attrs *attrs);
13
14extern void
15xen_swiotlb_free_coherent(struct device *hwdev, size_t size,
16			  void *vaddr, dma_addr_t dma_handle,
17			  struct dma_attrs *attrs);
18
19extern dma_addr_t xen_swiotlb_map_page(struct device *dev, struct page *page,
20				       unsigned long offset, size_t size,
21				       enum dma_data_direction dir,
22				       struct dma_attrs *attrs);
23
24extern void xen_swiotlb_unmap_page(struct device *hwdev, dma_addr_t dev_addr,
25				   size_t size, enum dma_data_direction dir,
26				   struct dma_attrs *attrs);
27extern int
28xen_swiotlb_map_sg_attrs(struct device *hwdev, struct scatterlist *sgl,
29			 int nelems, enum dma_data_direction dir,
30			 struct dma_attrs *attrs);
31
32extern void
33xen_swiotlb_unmap_sg_attrs(struct device *hwdev, struct scatterlist *sgl,
34			   int nelems, enum dma_data_direction dir,
35			   struct dma_attrs *attrs);
36
37extern void
38xen_swiotlb_sync_single_for_cpu(struct device *hwdev, dma_addr_t dev_addr,
39				size_t size, enum dma_data_direction dir);
40
41extern void
42xen_swiotlb_sync_sg_for_cpu(struct device *hwdev, struct scatterlist *sg,
43			    int nelems, enum dma_data_direction dir);
44
45extern void
46xen_swiotlb_sync_single_for_device(struct device *hwdev, dma_addr_t dev_addr,
47				   size_t size, enum dma_data_direction dir);
48
49extern void
50xen_swiotlb_sync_sg_for_device(struct device *hwdev, struct scatterlist *sg,
51			       int nelems, enum dma_data_direction dir);
52
53extern int
54xen_swiotlb_dma_mapping_error(struct device *hwdev, dma_addr_t dma_addr);
55
56extern int
57xen_swiotlb_dma_supported(struct device *hwdev, u64 mask);
58
59extern int
60xen_swiotlb_set_dma_mask(struct device *dev, u64 dma_mask);
61#endif /* __LINUX_SWIOTLB_XEN_H */
62