arch/arm/mm/dma.h

   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