1/* SPDX-License-Identifier: GPL-2.0 */
 2#ifndef __LINUX_SWIOTLB_XEN_H
 3#define __LINUX_SWIOTLB_XEN_H
 4
 5#include <linux/swiotlb.h>
 6
 7void xen_dma_sync_for_cpu(struct device *dev, dma_addr_t handle,
 8		phys_addr_t paddr, size_t size, enum dma_data_direction dir);
 9void xen_dma_sync_for_device(struct device *dev, dma_addr_t handle,
10		phys_addr_t paddr, size_t size, enum dma_data_direction dir);
11
12extern int xen_swiotlb_init(int verbose, bool early);
13extern const struct dma_map_ops xen_swiotlb_dma_ops;
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
14
15#endif /* __LINUX_SWIOTLB_XEN_H */

 
 1#ifndef __LINUX_SWIOTLB_XEN_H
 2#define __LINUX_SWIOTLB_XEN_H
 3
 4#include <linux/swiotlb.h>
 5
 6extern void xen_swiotlb_init(int verbose);
 
 
 
 7
 8extern void
 9*xen_swiotlb_alloc_coherent(struct device *hwdev, size_t size,
10			    dma_addr_t *dma_handle, gfp_t flags,
11			    struct dma_attrs *attrs);
12
13extern void
14xen_swiotlb_free_coherent(struct device *hwdev, size_t size,
15			  void *vaddr, dma_addr_t dma_handle,
16			  struct dma_attrs *attrs);
17
18extern dma_addr_t xen_swiotlb_map_page(struct device *dev, struct page *page,
19				       unsigned long offset, size_t size,
20				       enum dma_data_direction dir,
21				       struct dma_attrs *attrs);
22
23extern void xen_swiotlb_unmap_page(struct device *hwdev, dma_addr_t dev_addr,
24				   size_t size, enum dma_data_direction dir,
25				   struct dma_attrs *attrs);
26/*
27extern int
28xen_swiotlb_map_sg(struct device *hwdev, struct scatterlist *sg, int nents,
29		   enum dma_data_direction dir);
30
31extern void
32xen_swiotlb_unmap_sg(struct device *hwdev, struct scatterlist *sg, int nents,
33		     enum dma_data_direction dir);
34*/
35extern int
36xen_swiotlb_map_sg_attrs(struct device *hwdev, struct scatterlist *sgl,
37			 int nelems, enum dma_data_direction dir,
38			 struct dma_attrs *attrs);
39
40extern void
41xen_swiotlb_unmap_sg_attrs(struct device *hwdev, struct scatterlist *sgl,
42			   int nelems, enum dma_data_direction dir,
43			   struct dma_attrs *attrs);
44
45extern void
46xen_swiotlb_sync_single_for_cpu(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_cpu(struct device *hwdev, struct scatterlist *sg,
51			    int nelems, enum dma_data_direction dir);
52
53extern void
54xen_swiotlb_sync_single_for_device(struct device *hwdev, dma_addr_t dev_addr,
55				   size_t size, enum dma_data_direction dir);
56
57extern void
58xen_swiotlb_sync_sg_for_device(struct device *hwdev, struct scatterlist *sg,
59			       int nelems, enum dma_data_direction dir);
60
61extern int
62xen_swiotlb_dma_mapping_error(struct device *hwdev, dma_addr_t dma_addr);
63
64extern int
65xen_swiotlb_dma_supported(struct device *hwdev, u64 mask);
66
67#endif /* __LINUX_SWIOTLB_XEN_H */