1#ifndef _M68K_DMA_MAPPING_H
2#define _M68K_DMA_MAPPING_H
3
4#include <asm/cache.h>
5
6struct scatterlist;
7
8#ifndef CONFIG_MMU_SUN3
9static 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
19static inline int dma_get_cache_alignment(void)
20{
21	return 1 << L1_CACHE_SHIFT;
22}
23
24static inline int dma_is_consistent(struct device *dev, dma_addr_t dma_addr)
25{
26	return 0;
27}
28
29extern void *dma_alloc_coherent(struct device *, size_t,
30				dma_addr_t *, gfp_t);
31extern void dma_free_coherent(struct device *, size_t,
32			      void *, dma_addr_t);
33
34static inline void *dma_alloc_noncoherent(struct device *dev, size_t size,
35					  dma_addr_t *handle, gfp_t 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}
44static inline void dma_cache_sync(struct device *dev, void *vaddr, size_t size,
45				  enum dma_data_direction dir)
46{
47	/* we use coherent allocation, so not much to do here. */
48}
49
50extern 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}
91
92#else
93#include <asm-generic/dma-mapping-broken.h>
94#endif
95
96#endif  /* _M68K_DMA_MAPPING_H */
97