include/asm-generic/dma-mapping-broken.h

   1 #ifndef _ASM_GENERIC_DMA_MAPPING_H
   2 #define _ASM_GENERIC_DMA_MAPPING_H
   3
   4 /* define the dma api to allow compilation but not linking of
   5  * dma dependent code.  Code that depends on the dma-mapping
   6  * API needs to set 'depends on HAS_DMA' in its Kconfig
   7  */
   8
   9 struct scatterlist;
  10
  11 extern void *
  12 dma_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_handle,
  13                    gfp_t flag);
  14
  15 extern void
  16 dma_free_coherent(struct device *dev, size_t size, void *cpu_addr,
  17                     dma_addr_t dma_handle);
  18
  19 #define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f)
  20 #define dma_free_noncoherent(d, s, v, h) dma_free_coherent(d, s, v, h)
  21
  22 extern dma_addr_t
  23 dma_map_single(struct device *dev, void *ptr, size_t size,
  24                enum dma_data_direction direction);
  25
  26 extern void
  27 dma_unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size,
  28                  enum dma_data_direction direction);
  29
  30 extern int
  31 dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
  32            enum dma_data_direction direction);
  33
  34 extern void
  35 dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nhwentries,
  36              enum dma_data_direction direction);
  37
  38 extern dma_addr_t
  39 dma_map_page(struct device *dev, struct page *page, unsigned long offset,
  40              size_t size, enum dma_data_direction direction);
  41
  42 extern void
  43 dma_unmap_page(struct device *dev, dma_addr_t dma_address, size_t size,
  44                enum dma_data_direction direction);
  45
  46 extern void
  47 dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle, size_t size,
  48                         enum dma_data_direction direction);
  49
  50 extern void
  51 dma_sync_single_range_for_cpu(struct device *dev, dma_addr_t dma_handle,
  52                               unsigned long offset, size_t size,
  53                               enum dma_data_direction direction);
  54
  55 extern void
  56 dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, int nelems,
  57                     enum dma_data_direction direction);
  58
  59 #define dma_sync_single_for_device dma_sync_single_for_cpu
  60 #define dma_sync_single_range_for_device dma_sync_single_range_for_cpu
  61 #define dma_sync_sg_for_device dma_sync_sg_for_cpu
  62
  63 extern int
  64 dma_mapping_error(struct device *dev, dma_addr_t dma_addr);
  65
  66 extern int
  67 dma_supported(struct device *dev, u64 mask);
  68
  69 extern int
  70 dma_set_mask(struct device *dev, u64 mask);
  71
  72 extern int
  73 dma_get_cache_alignment(void);
  74
  75 extern void
  76 dma_cache_sync(struct device *dev, void *vaddr, size_t size,
  77                enum dma_data_direction direction);
  78
  79 #endif /* _ASM_GENERIC_DMA_MAPPING_H */