Commit | Line | Data |
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1da177e4 LT |
1 | #ifndef _ASM_DMA_MAPPING_H |
2 | #define _ASM_DMA_MAPPING_H | |
3 | ||
4 | #include <asm/scatterlist.h> | |
5 | #include <asm/cache.h> | |
f8ac0425 | 6 | #include <asm-generic/dma-coherent.h> |
1da177e4 | 7 | |
70342287 | 8 | #ifndef CONFIG_SGI_IP27 /* Kludge to fix 2.6.39 build for IP27 */ |
48e1fd5a | 9 | #include <dma-coherence.h> |
a5602a32 | 10 | #endif |
1da177e4 | 11 | |
48e1fd5a | 12 | extern struct dma_map_ops *mips_dma_map_ops; |
1da177e4 | 13 | |
48e1fd5a DD |
14 | static inline struct dma_map_ops *get_dma_ops(struct device *dev) |
15 | { | |
16 | if (dev && dev->archdata.dma_ops) | |
17 | return dev->archdata.dma_ops; | |
18 | else | |
19 | return mips_dma_map_ops; | |
20 | } | |
1da177e4 | 21 | |
48e1fd5a DD |
22 | static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size) |
23 | { | |
24 | if (!dev->dma_mask) | |
25 | return 0; | |
1da177e4 | 26 | |
48e1fd5a DD |
27 | return addr + size <= *dev->dma_mask; |
28 | } | |
29 | ||
30 | static inline void dma_mark_clean(void *addr, size_t size) {} | |
31 | ||
32 | #include <asm-generic/dma-mapping-common.h> | |
33 | ||
34 | static inline int dma_supported(struct device *dev, u64 mask) | |
4f29c057 | 35 | { |
48e1fd5a DD |
36 | struct dma_map_ops *ops = get_dma_ops(dev); |
37 | return ops->dma_supported(dev, mask); | |
4f29c057 AN |
38 | } |
39 | ||
48e1fd5a DD |
40 | static inline int dma_mapping_error(struct device *dev, u64 mask) |
41 | { | |
42 | struct dma_map_ops *ops = get_dma_ops(dev); | |
9c83b07c SK |
43 | |
44 | debug_dma_mapping_error(dev, mask); | |
48e1fd5a DD |
45 | return ops->mapping_error(dev, mask); |
46 | } | |
1da177e4 LT |
47 | |
48 | static inline int | |
49 | dma_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 | ||
d3fa72e4 | 59 | extern void dma_cache_sync(struct device *dev, void *vaddr, size_t size, |
1da177e4 LT |
60 | enum dma_data_direction direction); |
61 | ||
e8d51e54 AP |
62 | #define dma_alloc_coherent(d,s,h,f) dma_alloc_attrs(d,s,h,f,NULL) |
63 | ||
64 | static inline void *dma_alloc_attrs(struct device *dev, size_t size, | |
65 | dma_addr_t *dma_handle, gfp_t gfp, | |
66 | struct dma_attrs *attrs) | |
48e1fd5a DD |
67 | { |
68 | void *ret; | |
69 | struct dma_map_ops *ops = get_dma_ops(dev); | |
70 | ||
e8d51e54 | 71 | ret = ops->alloc(dev, size, dma_handle, gfp, attrs); |
48e1fd5a DD |
72 | |
73 | debug_dma_alloc_coherent(dev, size, *dma_handle, ret); | |
74 | ||
75 | return ret; | |
76 | } | |
77 | ||
e8d51e54 AP |
78 | #define dma_free_coherent(d,s,c,h) dma_free_attrs(d,s,c,h,NULL) |
79 | ||
80 | static inline void dma_free_attrs(struct device *dev, size_t size, | |
81 | void *vaddr, dma_addr_t dma_handle, | |
82 | struct dma_attrs *attrs) | |
48e1fd5a DD |
83 | { |
84 | struct dma_map_ops *ops = get_dma_ops(dev); | |
85 | ||
e8d51e54 | 86 | ops->free(dev, size, vaddr, dma_handle, attrs); |
48e1fd5a DD |
87 | |
88 | debug_dma_free_coherent(dev, size, vaddr, dma_handle); | |
89 | } | |
90 | ||
91 | ||
92 | void *dma_alloc_noncoherent(struct device *dev, size_t size, | |
93 | dma_addr_t *dma_handle, gfp_t flag); | |
94 | ||
95 | void dma_free_noncoherent(struct device *dev, size_t size, | |
96 | void *vaddr, dma_addr_t dma_handle); | |
97 | ||
1da177e4 | 98 | #endif /* _ASM_DMA_MAPPING_H */ |