arch/sparc/include/asm/dma-mapping.h

   1 #ifndef ___ASM_SPARC_DMA_MAPPING_H
   2 #define ___ASM_SPARC_DMA_MAPPING_H
   3
   4 #include <linux/scatterlist.h>
   5 #include <linux/mm.h>
   6 #include <linux/dma-debug.h>
   7
   8 #define DMA_ERROR_CODE  (~(dma_addr_t)0x0)
   9
  10 #define HAVE_ARCH_DMA_SUPPORTED 1
  11 int dma_supported(struct device *dev, u64 mask);
  12
  13 static inline void dma_cache_sync(struct device *dev, void *vaddr, size_t size,
  14                                   enum dma_data_direction dir)
  15 {
  16         /* Since dma_{alloc,free}_noncoherent() allocated coherent memory, this
  17          * routine can be a nop.
  18          */
  19 }
  20
  21 extern const struct dma_map_ops *dma_ops;
  22 extern const struct dma_map_ops *leon_dma_ops;
  23 extern const struct dma_map_ops pci32_dma_ops;
  24
  25 extern struct bus_type pci_bus_type;
  26
  27 static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus)
  28 {
  29 #ifdef CONFIG_SPARC_LEON
  30         if (sparc_cpu_model == sparc_leon)
  31                 return leon_dma_ops;
  32 #endif
  33 #if defined(CONFIG_SPARC32) && defined(CONFIG_PCI)
  34         if (bus == &pci_bus_type)
  35                 return &pci32_dma_ops;
  36 #endif
  37         return dma_ops;
  38 }
  39
  40 #endif