1 #ifndef __ASM_SH_DMA_MAPPING_H
2 #define __ASM_SH_DMA_MAPPING_H
4 extern struct dma_map_ops *dma_ops;
5 extern void no_iommu_init(void);
7 static inline struct dma_map_ops *get_dma_ops(struct device *dev)
12 #include <asm-generic/dma-coherent.h>
13 #include <asm-generic/dma-mapping-common.h>
15 static inline int dma_supported(struct device *dev, u64 mask)
17 struct dma_map_ops *ops = get_dma_ops(dev);
19 if (ops->dma_supported)
20 return ops->dma_supported(dev, mask);
25 static inline int dma_set_mask(struct device *dev, u64 mask)
27 struct dma_map_ops *ops = get_dma_ops(dev);
29 if (!dev->dma_mask || !dma_supported(dev, mask))
31 if (ops->set_dma_mask)
32 return ops->set_dma_mask(dev, mask);
34 *dev->dma_mask = mask;
39 void dma_cache_sync(struct device *dev, void *vaddr, size_t size,
40 enum dma_data_direction dir);
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)
45 #ifdef CONFIG_DMA_COHERENT
46 #define dma_is_consistent(d, h) (1)
48 #define dma_is_consistent(d, h) (0)
51 static inline int dma_get_cache_alignment(void)
54 * Each processor family will define its own L1_CACHE_SHIFT,
55 * L1_CACHE_BYTES wraps to this, so this is always safe.
57 return L1_CACHE_BYTES;
60 static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
62 struct dma_map_ops *ops = get_dma_ops(dev);
64 if (ops->mapping_error)
65 return ops->mapping_error(dev, dma_addr);
70 static inline void *dma_alloc_coherent(struct device *dev, size_t size,
71 dma_addr_t *dma_handle, gfp_t gfp)
73 struct dma_map_ops *ops = get_dma_ops(dev);
76 if (dma_alloc_from_coherent(dev, size, dma_handle, &memory))
78 if (!ops->alloc_coherent)
81 memory = ops->alloc_coherent(dev, size, dma_handle, gfp);
82 debug_dma_alloc_coherent(dev, size, *dma_handle, memory);
87 static inline void dma_free_coherent(struct device *dev, size_t size,
88 void *vaddr, dma_addr_t dma_handle)
90 struct dma_map_ops *ops = get_dma_ops(dev);
92 if (dma_release_from_coherent(dev, get_order(size), vaddr))
95 debug_dma_free_coherent(dev, size, vaddr, dma_handle);
96 if (ops->free_coherent)
97 ops->free_coherent(dev, size, vaddr, dma_handle);
100 /* arch/sh/mm/consistent.c */
101 extern void *dma_generic_alloc_coherent(struct device *dev, size_t size,
102 dma_addr_t *dma_addr, gfp_t flag);
103 extern void dma_generic_free_coherent(struct device *dev, size_t size,
104 void *vaddr, dma_addr_t dma_handle);
106 #endif /* __ASM_SH_DMA_MAPPING_H */