1 #ifndef _ASM_DMA_MAPPING_H 2 #define _ASM_DMA_MAPPING_H 3 4 #include <asm/scatterlist.h> 5 #include <asm/cache.h> 6 #include <asm-generic/dma-coherent.h> 7 8 #include <dma-coherence.h> 9 10 extern struct dma_map_ops *mips_dma_map_ops; 11 12 static inline struct dma_map_ops *get_dma_ops(struct device *dev) 13 { 14 if (dev && dev->archdata.dma_ops) 15 return dev->archdata.dma_ops; 16 else 17 return mips_dma_map_ops; 18 } 19 20 static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size) 21 { 22 if (!dev->dma_mask) 23 return 0; 24 25 return addr + size <= *dev->dma_mask; 26 } 27 28 static inline void dma_mark_clean(void *addr, size_t size) {} 29 30 #include <asm-generic/dma-mapping-common.h> 31 32 static inline int dma_supported(struct device *dev, u64 mask) 33 { 34 struct dma_map_ops *ops = get_dma_ops(dev); 35 return ops->dma_supported(dev, mask); 36 } 37 38 static inline int dma_mapping_error(struct device *dev, u64 mask) 39 { 40 struct dma_map_ops *ops = get_dma_ops(dev); 41 return ops->mapping_error(dev, mask); 42 } 43 44 static inline int 45 dma_set_mask(struct device *dev, u64 mask) 46 { 47 if(!dev->dma_mask || !dma_supported(dev, mask)) 48 return -EIO; 49 50 *dev->dma_mask = mask; 51 52 return 0; 53 } 54 55 extern void dma_cache_sync(struct device *dev, void *vaddr, size_t size, 56 enum dma_data_direction direction); 57 58 static inline void *dma_alloc_coherent(struct device *dev, size_t size, 59 dma_addr_t *dma_handle, gfp_t gfp) 60 { 61 void *ret; 62 struct dma_map_ops *ops = get_dma_ops(dev); 63 64 ret = ops->alloc_coherent(dev, size, dma_handle, gfp); 65 66 debug_dma_alloc_coherent(dev, size, *dma_handle, ret); 67 68 return ret; 69 } 70 71 static inline void dma_free_coherent(struct device *dev, size_t size, 72 void *vaddr, dma_addr_t dma_handle) 73 { 74 struct dma_map_ops *ops = get_dma_ops(dev); 75 76 ops->free_coherent(dev, size, vaddr, dma_handle); 77 78 debug_dma_free_coherent(dev, size, vaddr, dma_handle); 79 } 80 81 82 void *dma_alloc_noncoherent(struct device *dev, size_t size, 83 dma_addr_t *dma_handle, gfp_t flag); 84 85 void dma_free_noncoherent(struct device *dev, size_t size, 86 void *vaddr, dma_addr_t dma_handle); 87 88 #endif /* _ASM_DMA_MAPPING_H */ 89