1#ifndef _ASM_DMA_MAPPING_H
2#define _ASM_DMA_MAPPING_H
3
4#include <asm/scatterlist.h>
5#include <asm/cache.h>
6
7void *dma_alloc_noncoherent(struct device *dev, size_t size,
8			   dma_addr_t *dma_handle, gfp_t flag);
9
10void dma_free_noncoherent(struct device *dev, size_t size,
11			 void *vaddr, dma_addr_t dma_handle);
12
13void *dma_alloc_coherent(struct device *dev, size_t size,
14			   dma_addr_t *dma_handle, gfp_t flag);
15
16void dma_free_coherent(struct device *dev, size_t size,
17			 void *vaddr, dma_addr_t dma_handle);
18
19extern dma_addr_t dma_map_single(struct device *dev, void *ptr, size_t size,
20	enum dma_data_direction direction);
21extern void dma_unmap_single(struct device *dev, dma_addr_t dma_addr,
22	size_t size, enum dma_data_direction direction);
23extern int dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
24	enum dma_data_direction direction);
25extern dma_addr_t dma_map_page(struct device *dev, struct page *page,
26	unsigned long offset, size_t size, enum dma_data_direction direction);
27extern void dma_unmap_page(struct device *dev, dma_addr_t dma_address,
28	size_t size, enum dma_data_direction direction);
29extern void dma_unmap_sg(struct device *dev, struct scatterlist *sg,
30	int nhwentries, enum dma_data_direction direction);
31extern void dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle,
32	size_t size, enum dma_data_direction direction);
33extern void dma_sync_single_for_device(struct device *dev,
34	dma_addr_t dma_handle, size_t size, enum dma_data_direction direction);
35extern void dma_sync_single_range_for_cpu(struct device *dev,
36	dma_addr_t dma_handle, unsigned long offset, size_t size,
37	enum dma_data_direction direction);
38extern void dma_sync_single_range_for_device(struct device *dev,
39	dma_addr_t dma_handle, unsigned long offset, size_t size,
40	enum dma_data_direction direction);
41extern void dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg,
42	int nelems, enum dma_data_direction direction);
43extern void dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg,
44	int nelems, enum dma_data_direction direction);
45extern int dma_mapping_error(dma_addr_t dma_addr);
46extern int dma_supported(struct device *dev, u64 mask);
47
48static inline int
49dma_set_mask(struct device *dev, u64 mask)
50{
51	if(!dev->dma_mask || !dma_supported(dev, mask))
52		return -EIO;
53
54	*dev->dma_mask = mask;
55
56	return 0;
57}
58
59static inline int
60dma_get_cache_alignment(void)
61{
62	return 128;
63}
64
65extern int dma_is_consistent(struct device *dev, dma_addr_t dma_addr);
66
67extern void dma_cache_sync(struct device *dev, void *vaddr, size_t size,
68	       enum dma_data_direction direction);
69
70
71#endif /* _ASM_DMA_MAPPING_H */
72