Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu
[pandora-kernel.git] / arch / m68k / include / asm / dma-mapping.h
1 #ifndef _M68K_DMA_MAPPING_H
2 #define _M68K_DMA_MAPPING_H
3
4 #include <asm/cache.h>
5
6 struct scatterlist;
7
8 #ifndef CONFIG_MMU_SUN3
9 static inline int dma_supported(struct device *dev, u64 mask)
10 {
11         return 1;
12 }
13
14 static inline int dma_set_mask(struct device *dev, u64 mask)
15 {
16         return 0;
17 }
18
19 extern void *dma_alloc_coherent(struct device *, size_t,
20                                 dma_addr_t *, gfp_t);
21 extern void dma_free_coherent(struct device *, size_t,
22                               void *, dma_addr_t);
23
24 static inline void *dma_alloc_noncoherent(struct device *dev, size_t size,
25                                           dma_addr_t *handle, gfp_t flag)
26 {
27         return dma_alloc_coherent(dev, size, handle, flag);
28 }
29 static inline void dma_free_noncoherent(struct device *dev, size_t size,
30                                         void *addr, dma_addr_t handle)
31 {
32         dma_free_coherent(dev, size, addr, handle);
33 }
34 static inline void dma_cache_sync(struct device *dev, void *vaddr, size_t size,
35                                   enum dma_data_direction dir)
36 {
37         /* we use coherent allocation, so not much to do here. */
38 }
39
40 extern dma_addr_t dma_map_single(struct device *, void *, size_t,
41                                  enum dma_data_direction);
42 static inline void dma_unmap_single(struct device *dev, dma_addr_t addr,
43                                     size_t size, enum dma_data_direction dir)
44 {
45 }
46
47 extern dma_addr_t dma_map_page(struct device *, struct page *,
48                                unsigned long, size_t size,
49                                enum dma_data_direction);
50 static inline void dma_unmap_page(struct device *dev, dma_addr_t address,
51                                   size_t size, enum dma_data_direction dir)
52 {
53 }
54
55 extern int dma_map_sg(struct device *, struct scatterlist *, int,
56                       enum dma_data_direction);
57 static inline void dma_unmap_sg(struct device *dev, struct scatterlist *sg,
58                                 int nhwentries, enum dma_data_direction dir)
59 {
60 }
61
62 extern void dma_sync_single_for_device(struct device *, dma_addr_t, size_t,
63                                        enum dma_data_direction);
64 extern void dma_sync_sg_for_device(struct device *, struct scatterlist *, int,
65                                    enum dma_data_direction);
66
67 static inline void dma_sync_single_range_for_device(struct device *dev,
68                 dma_addr_t dma_handle, unsigned long offset, size_t size,
69                 enum dma_data_direction direction)
70 {
71         /* just sync everything for now */
72         dma_sync_single_for_device(dev, dma_handle, offset + size, direction);
73 }
74
75 static inline void dma_sync_single_for_cpu(struct device *dev, dma_addr_t handle,
76                                            size_t size, enum dma_data_direction dir)
77 {
78 }
79
80 static inline void dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg,
81                                        int nents, enum dma_data_direction dir)
82 {
83 }
84
85 static inline void dma_sync_single_range_for_cpu(struct device *dev,
86                 dma_addr_t dma_handle, unsigned long offset, size_t size,
87                 enum dma_data_direction direction)
88 {
89         /* just sync everything for now */
90         dma_sync_single_for_cpu(dev, dma_handle, offset + size, direction);
91 }
92
93 static inline int dma_mapping_error(struct device *dev, dma_addr_t handle)
94 {
95         return 0;
96 }
97
98 #else
99 #include <asm-generic/dma-mapping-broken.h>
100 #endif
101
102 #endif  /* _M68K_DMA_MAPPING_H */