Eric Lee / smarc-fsl-linux-kernel

Blame view

include/xen/swiotlb-xen.h 2.01 KB
edit raw normal view history
b097186fd   Konrad Rzeszutek Wilk   swiotlb-xen: SWIO... 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
 
  #ifndef __LINUX_SWIOTLB_XEN_H
  #define __LINUX_SWIOTLB_XEN_H
  
  #include <linux/swiotlb.h>
  
  extern void xen_swiotlb_init(int verbose);
  
  extern void
  *xen_swiotlb_alloc_coherent(struct device *hwdev, size_t size,
  			    dma_addr_t *dma_handle, gfp_t flags);
  
  extern void
  xen_swiotlb_free_coherent(struct device *hwdev, size_t size,
  			  void *vaddr, dma_addr_t dma_handle);
  
  extern dma_addr_t xen_swiotlb_map_page(struct device *dev, struct page *page,
  				       unsigned long offset, size_t size,
  				       enum dma_data_direction dir,
  				       struct dma_attrs *attrs);
  
  extern void xen_swiotlb_unmap_page(struct device *hwdev, dma_addr_t dev_addr,
  				   size_t size, enum dma_data_direction dir,
  				   struct dma_attrs *attrs);
  /*
  extern int
  xen_swiotlb_map_sg(struct device *hwdev, struct scatterlist *sg, int nents,
  		   enum dma_data_direction dir);
  
  extern void
  xen_swiotlb_unmap_sg(struct device *hwdev, struct scatterlist *sg, int nents,
  		     enum dma_data_direction dir);
  */
  extern int
  xen_swiotlb_map_sg_attrs(struct device *hwdev, struct scatterlist *sgl,
  			 int nelems, enum dma_data_direction dir,
  			 struct dma_attrs *attrs);
  
  extern void
  xen_swiotlb_unmap_sg_attrs(struct device *hwdev, struct scatterlist *sgl,
  			   int nelems, enum dma_data_direction dir,
  			   struct dma_attrs *attrs);
  
  extern void
  xen_swiotlb_sync_single_for_cpu(struct device *hwdev, dma_addr_t dev_addr,
  				size_t size, enum dma_data_direction dir);
  
  extern void
  xen_swiotlb_sync_sg_for_cpu(struct device *hwdev, struct scatterlist *sg,
  			    int nelems, enum dma_data_direction dir);
  
  extern void
  xen_swiotlb_sync_single_for_device(struct device *hwdev, dma_addr_t dev_addr,
  				   size_t size, enum dma_data_direction dir);
  
  extern void
  xen_swiotlb_sync_sg_for_device(struct device *hwdev, struct scatterlist *sg,
  			       int nelems, enum dma_data_direction dir);
  
  extern int
  xen_swiotlb_dma_mapping_error(struct device *hwdev, dma_addr_t dma_addr);
  
  extern int
  xen_swiotlb_dma_supported(struct device *hwdev, u64 mask);
  
  #endif /* __LINUX_SWIOTLB_XEN_H */