1 #ifndef DMA_H 2 #define DMA_H 3 4 #include <asm/glue-cache.h> 5 6 #ifndef MULTI_CACHE 7 #define dmac_map_area __glue(_CACHE,_dma_map_area) 8 #define dmac_unmap_area __glue(_CACHE,_dma_unmap_area) 9 10 /* 11 * These are private to the dma-mapping API. Do not use directly. 12 * Their sole purpose is to ensure that data held in the cache 13 * is visible to DMA, or data written by DMA to system memory is 14 * visible to the CPU. 15 */ 16 extern void dmac_map_area(const void *, size_t, int); 17 extern void dmac_unmap_area(const void *, size_t, int); 18 19 #else 20 21 /* 22 * These are private to the dma-mapping API. Do not use directly. 23 * Their sole purpose is to ensure that data held in the cache 24 * is visible to DMA, or data written by DMA to system memory is 25 * visible to the CPU. 26 */ 27 #define dmac_map_area cpu_cache.dma_map_area 28 #define dmac_unmap_area cpu_cache.dma_unmap_area 29 30 #endif 31 32 #endif 33