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

   1 #ifndef _ASM_DMA_MAPPING_H
   2 #define _ASM_DMA_MAPPING_H
   3
   4 #include <linux/scatterlist.h>
   5 #include <asm/dma-coherence.h>
   6 #include <asm/cache.h>
   7
   8 #ifndef CONFIG_SGI_IP27 /* Kludge to fix 2.6.39 build for IP27 */
   9 #include <dma-coherence.h>
  10 #endif
  11
  12 extern struct dma_map_ops *mips_dma_map_ops;
  13
  14 static inline struct dma_map_ops *get_dma_ops(struct device *dev)
  15 {
  16         if (dev && dev->archdata.dma_ops)
  17                 return dev->archdata.dma_ops;
  18         else
  19                 return mips_dma_map_ops;
  20 }
  21
  22 static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size)
  23 {
  24         if (!dev->dma_mask)
  25                 return false;
  26
  27         return addr + size <= *dev->dma_mask;
  28 }
  29
  30 static inline void dma_mark_clean(void *addr, size_t size) {}
  31
  32 extern void dma_cache_sync(struct device *dev, void *vaddr, size_t size,
  33                enum dma_data_direction direction);
  34
  35 #define arch_setup_dma_ops arch_setup_dma_ops
  36 static inline void arch_setup_dma_ops(struct device *dev, u64 dma_base,
  37                                       u64 size, const struct iommu_ops *iommu,
  38                                       bool coherent)
  39 {
  40 #ifdef CONFIG_DMA_PERDEV_COHERENT
  41         dev->archdata.dma_coherent = coherent;
  42 #endif
  43 }
  44
  45 #endif /* _ASM_DMA_MAPPING_H */