1#ifndef __ASM_SH_DMA_MAPPING_H
 2#define __ASM_SH_DMA_MAPPING_H
 3
 4extern struct dma_map_ops *dma_ops;
 5extern void no_iommu_init(void);
 6
 7static inline struct dma_map_ops *get_dma_ops(struct device *dev)
 8{
 9	return dma_ops;
10}
11
12#define DMA_ERROR_CODE 0
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
13
14void dma_cache_sync(struct device *dev, void *vaddr, size_t size,
15		    enum dma_data_direction dir);
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
16
17/* arch/sh/mm/consistent.c */
18extern void *dma_generic_alloc_coherent(struct device *dev, size_t size,
19					dma_addr_t *dma_addr, gfp_t flag,
20					struct dma_attrs *attrs);
21extern void dma_generic_free_coherent(struct device *dev, size_t size,
22				      void *vaddr, dma_addr_t dma_handle,
23				      struct dma_attrs *attrs);
24
25#endif /* __ASM_SH_DMA_MAPPING_H */

 1#ifndef __ASM_SH_DMA_MAPPING_H
 2#define __ASM_SH_DMA_MAPPING_H
 3
 4extern struct dma_map_ops *dma_ops;
 5extern void no_iommu_init(void);
 6
 7static inline struct dma_map_ops *get_dma_ops(struct device *dev)
 8{
 9	return dma_ops;
10}
11
12#include <asm-generic/dma-coherent.h>
13#include <asm-generic/dma-mapping-common.h>
14
15static inline int dma_supported(struct device *dev, u64 mask)
16{
17	struct dma_map_ops *ops = get_dma_ops(dev);
18
19	if (ops->dma_supported)
20		return ops->dma_supported(dev, mask);
21
22	return 1;
23}
24
25static inline int dma_set_mask(struct device *dev, u64 mask)
26{
27	struct dma_map_ops *ops = get_dma_ops(dev);
28
29	if (!dev->dma_mask || !dma_supported(dev, mask))
30		return -EIO;
31	if (ops->set_dma_mask)
32		return ops->set_dma_mask(dev, mask);
33
34	*dev->dma_mask = mask;
35
36	return 0;
37}
38
39void dma_cache_sync(struct device *dev, void *vaddr, size_t size,
40		    enum dma_data_direction dir);
41
42#define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f)
43#define dma_free_noncoherent(d, s, v, h) dma_free_coherent(d, s, v, h)
44
45static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
46{
47	struct dma_map_ops *ops = get_dma_ops(dev);
48
49	if (ops->mapping_error)
50		return ops->mapping_error(dev, dma_addr);
51
52	return dma_addr == 0;
53}
54
55#define dma_alloc_coherent(d,s,h,f)	dma_alloc_attrs(d,s,h,f,NULL)
56
57static inline void *dma_alloc_attrs(struct device *dev, size_t size,
58				    dma_addr_t *dma_handle, gfp_t gfp,
59				    struct dma_attrs *attrs)
60{
61	struct dma_map_ops *ops = get_dma_ops(dev);
62	void *memory;
63
64	if (dma_alloc_from_coherent(dev, size, dma_handle, &memory))
65		return memory;
66	if (!ops->alloc)
67		return NULL;
68
69	memory = ops->alloc(dev, size, dma_handle, gfp, attrs);
70	debug_dma_alloc_coherent(dev, size, *dma_handle, memory);
71
72	return memory;
73}
74
75#define dma_free_coherent(d,s,c,h) dma_free_attrs(d,s,c,h,NULL)
76
77static inline void dma_free_attrs(struct device *dev, size_t size,
78				  void *vaddr, dma_addr_t dma_handle,
79				  struct dma_attrs *attrs)
80{
81	struct dma_map_ops *ops = get_dma_ops(dev);
82
83	if (dma_release_from_coherent(dev, get_order(size), vaddr))
84		return;
85
86	debug_dma_free_coherent(dev, size, vaddr, dma_handle);
87	if (ops->free)
88		ops->free(dev, size, vaddr, dma_handle, attrs);
89}
90
91/* arch/sh/mm/consistent.c */
92extern void *dma_generic_alloc_coherent(struct device *dev, size_t size,
93					dma_addr_t *dma_addr, gfp_t flag,
94					struct dma_attrs *attrs);
95extern void dma_generic_free_coherent(struct device *dev, size_t size,
96				      void *vaddr, dma_addr_t dma_handle,
97				      struct dma_attrs *attrs);
98
99#endif /* __ASM_SH_DMA_MAPPING_H */