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Linus Torvalds1da177e2005-04-16 15:20:36 -07001#ifndef _M68K_DMA_MAPPING_H
2#define _M68K_DMA_MAPPING_H
3
Roman Zippel742636f2006-06-25 05:46:57 -07004#include <asm/cache.h>
5
Roman Zippelb035c962006-06-25 05:46:56 -07006struct scatterlist;
Linus Torvalds1da177e2005-04-16 15:20:36 -07007
Al Viro58ba81d2006-10-09 02:11:47 +01008#ifndef CONFIG_MMU_SUN3
Roman Zippelb035c962006-06-25 05:46:56 -07009static inline int dma_supported(struct device *dev, u64 mask)
10{
11 return 1;
12}
13
14static inline int dma_set_mask(struct device *dev, u64 mask)
15{
16 return 0;
17}
18
Roman Zippel742636f2006-06-25 05:46:57 -070019static inline int dma_get_cache_alignment(void)
20{
21 return 1 << L1_CACHE_SHIFT;
22}
23
Ralf Baechlef67637e2006-12-06 20:38:54 -080024static inline int dma_is_consistent(struct device *dev, dma_addr_t dma_addr)
Roman Zippel742636f2006-06-25 05:46:57 -070025{
26 return 0;
27}
28
Roman Zippelb035c962006-06-25 05:46:56 -070029extern void *dma_alloc_coherent(struct device *, size_t,
Al Virodc366702006-10-06 00:43:58 -070030 dma_addr_t *, gfp_t);
Roman Zippelb035c962006-06-25 05:46:56 -070031extern void dma_free_coherent(struct device *, size_t,
32 void *, dma_addr_t);
33
Roman Zippel742636f2006-06-25 05:46:57 -070034static inline void *dma_alloc_noncoherent(struct device *dev, size_t size,
35 dma_addr_t *handle, int flag)
36{
37 return dma_alloc_coherent(dev, size, handle, flag);
38}
39static inline void dma_free_noncoherent(struct device *dev, size_t size,
40 void *addr, dma_addr_t handle)
41{
42 dma_free_coherent(dev, size, addr, handle);
43}
Ralf Baechled3fa72e2006-12-06 20:38:56 -080044static inline void dma_cache_sync(struct device *dev, void *vaddr, size_t size,
Roman Zippel742636f2006-06-25 05:46:57 -070045 enum dma_data_direction dir)
46{
47 /* we use coherent allocation, so not much to do here. */
48}
49
Roman Zippelb035c962006-06-25 05:46:56 -070050extern dma_addr_t dma_map_single(struct device *, void *, size_t,
51 enum dma_data_direction);
52static inline void dma_unmap_single(struct device *dev, dma_addr_t addr,
53 size_t size, enum dma_data_direction dir)
54{
55}
56
57extern dma_addr_t dma_map_page(struct device *, struct page *,
58 unsigned long, size_t size,
59 enum dma_data_direction);
60static inline void dma_unmap_page(struct device *dev, dma_addr_t address,
61 size_t size, enum dma_data_direction dir)
62{
63}
64
65extern int dma_map_sg(struct device *, struct scatterlist *, int,
66 enum dma_data_direction);
67static inline void dma_unmap_sg(struct device *dev, struct scatterlist *sg,
68 int nhwentries, enum dma_data_direction dir)
69{
70}
71
72extern void dma_sync_single_for_device(struct device *, dma_addr_t, size_t,
73 enum dma_data_direction);
74extern void dma_sync_sg_for_device(struct device *, struct scatterlist *, int,
75 enum dma_data_direction);
76
77static inline void dma_sync_single_for_cpu(struct device *dev, dma_addr_t handle,
78 size_t size, enum dma_data_direction dir)
79{
80}
81
82static inline void dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg,
83 int nents, enum dma_data_direction dir)
84{
85}
86
87static inline int dma_mapping_error(dma_addr_t handle)
88{
89 return 0;
90}
Linus Torvalds1da177e2005-04-16 15:20:36 -070091
Al Viro58ba81d2006-10-09 02:11:47 +010092#else
93#include <asm-generic/dma-mapping-broken.h>
94#endif
95
Linus Torvalds1da177e2005-04-16 15:20:36 -070096#endif /* _M68K_DMA_MAPPING_H */