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
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
|
#ifndef _ASM_GENERIC_DMA_MAPPING_H
#define _ASM_GENERIC_DMA_MAPPING_H
/* define the dma api to allow compilation but not linking of
* dma dependent code. Code that depends on the dma-mapping
* API needs to set 'depends on HAS_DMA' in its Kconfig
*/
struct scatterlist;
extern void *
dma_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_handle,
gfp_t flag);
extern void
dma_free_coherent(struct device *dev, size_t size, void *cpu_addr,
dma_addr_t dma_handle);
#define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f)
#define dma_free_noncoherent(d, s, v, h) dma_free_coherent(d, s, v, h)
extern dma_addr_t
dma_map_single(struct device *dev, void *ptr, size_t size,
enum dma_data_direction direction);
extern void
dma_unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size,
enum dma_data_direction direction);
extern int
dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
enum dma_data_direction direction);
extern void
dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nhwentries,
enum dma_data_direction direction);
extern dma_addr_t
dma_map_page(struct device *dev, struct page *page, unsigned long offset,
size_t size, enum dma_data_direction direction);
extern void
dma_unmap_page(struct device *dev, dma_addr_t dma_address, size_t size,
enum dma_data_direction direction);
extern void
dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle, size_t size,
enum dma_data_direction direction);
extern void
dma_sync_single_range_for_cpu(struct device *dev, dma_addr_t dma_handle,
unsigned long offset, size_t size,
enum dma_data_direction direction);
extern void
dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, int nelems,
enum dma_data_direction direction);
#define dma_sync_single_for_device dma_sync_single_for_cpu
#define dma_sync_single_range_for_device dma_sync_single_range_for_cpu
#define dma_sync_sg_for_device dma_sync_sg_for_cpu
extern int
dma_mapping_error(dma_addr_t dma_addr);
extern int
dma_supported(struct device *dev, u64 mask);
extern int
dma_set_mask(struct device *dev, u64 mask);
extern int
dma_get_cache_alignment(void);
extern int
dma_is_consistent(struct device *dev, dma_addr_t dma_handle);
extern void
dma_cache_sync(struct device *dev, void *vaddr, size_t size,
enum dma_data_direction direction);
#endif /* _ASM_GENERIC_DMA_MAPPING_H */
|
