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 static inline void *dma_alloc_attrs(struct device *dev, size_t size,
  20                                     dma_addr_t *dma_handle, gfp_t flag,
  21                                     struct dma_attrs *attrs)
  22 {
  23         /* attrs is not supported and ignored */
  24         return dma_alloc_coherent(dev, size, dma_handle, flag);
  25 }
  26
  27 static inline void dma_free_attrs(struct device *dev, size_t size,
  28                                   void *cpu_addr, dma_addr_t dma_handle,
  29                                   struct dma_attrs *attrs)
  30 {
  31         /* attrs is not supported and ignored */
  32         dma_free_coherent(dev, size, cpu_addr, dma_handle);
  33 }
  34
  35 #define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f)
  36 #define dma_free_noncoherent(d, s, v, h) dma_free_coherent(d, s, v, h)
  37
  38 extern dma_addr_t
  39 dma_map_single(struct device *dev, void *ptr, size_t size,
  40                enum dma_data_direction direction);
  41
  42 extern void
  43 dma_unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size,
  44                  enum dma_data_direction direction);
  45
  46 extern int
  47 dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
  48            enum dma_data_direction direction);
  49
  50 extern void
  51 dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nhwentries,
  52              enum dma_data_direction direction);
  53
  54 extern dma_addr_t
  55 dma_map_page(struct device *dev, struct page *page, unsigned long offset,
  56              size_t size, enum dma_data_direction direction);
  57
  58 extern void
  59 dma_unmap_page(struct device *dev, dma_addr_t dma_address, size_t size,
  60                enum dma_data_direction direction);
  61
  62 extern void
  63 dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle, size_t size,
  64                         enum dma_data_direction direction);
  65
  66 extern void
  67 dma_sync_single_range_for_cpu(struct device *dev, dma_addr_t dma_handle,
  68                               unsigned long offset, size_t size,
  69                               enum dma_data_direction direction);
  70
  71 extern void
  72 dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, int nelems,
  73                     enum dma_data_direction direction);
  74
  75 #define dma_sync_single_for_device dma_sync_single_for_cpu
  76 #define dma_sync_single_range_for_device dma_sync_single_range_for_cpu
  77 #define dma_sync_sg_for_device dma_sync_sg_for_cpu
  78
  79 extern int
  80 dma_mapping_error(struct device *dev, dma_addr_t dma_addr);
  81
  82 extern int
  83 dma_supported(struct device *dev, u64 mask);
  84
  85 extern int
  86 dma_set_mask(struct device *dev, u64 mask);
  87
  88 extern int
  89 dma_get_cache_alignment(void);
  90
  91 extern void
  92 dma_cache_sync(struct device *dev, void *vaddr, size_t size,
  93                enum dma_data_direction direction);
  94
  95 #endif /* _ASM_GENERIC_DMA_MAPPING_H */