1#ifndef _M68K_DMA_MAPPING_H
  2#define _M68K_DMA_MAPPING_H
  3
  4#include <asm/cache.h>
  5
  6struct scatterlist;
  7
  8#ifndef CONFIG_MMU_SUN3
  9static inline int dma_supported(struct device *dev, u64 mask)
 10{
 11	return 1;
 12}
 13
 14static inline int dma_set_mask(struct device *dev, u64 mask)
 15{
 16	return 0;
 17}
 18
 19extern void *dma_alloc_coherent(struct device *, size_t,
 20				dma_addr_t *, gfp_t);
 21extern void dma_free_coherent(struct device *, size_t,
 22			      void *, dma_addr_t);
 23
 24static inline void *dma_alloc_noncoherent(struct device *dev, size_t size,
 25					  dma_addr_t *handle, gfp_t flag)
 26{
 27	return dma_alloc_coherent(dev, size, handle, flag);
 28}
 29static inline void dma_free_noncoherent(struct device *dev, size_t size,
 30					void *addr, dma_addr_t handle)
 31{
 32	dma_free_coherent(dev, size, addr, handle);
 33}
 34static inline void dma_cache_sync(struct device *dev, void *vaddr, size_t size,
 35				  enum dma_data_direction dir)
 36{
 37	/* we use coherent allocation, so not much to do here. */
 38}
 39
 40extern dma_addr_t dma_map_single(struct device *, void *, size_t,
 41				 enum dma_data_direction);
 42static inline void dma_unmap_single(struct device *dev, dma_addr_t addr,
 43				    size_t size, enum dma_data_direction dir)
 44{
 45}
 46
 47extern dma_addr_t dma_map_page(struct device *, struct page *,
 48			       unsigned long, size_t size,
 49			       enum dma_data_direction);
 50static inline void dma_unmap_page(struct device *dev, dma_addr_t address,
 51				  size_t size, enum dma_data_direction dir)
 52{
 53}
 54
 55extern int dma_map_sg(struct device *, struct scatterlist *, int,
 56		      enum dma_data_direction);
 57static inline void dma_unmap_sg(struct device *dev, struct scatterlist *sg,
 58				int nhwentries, enum dma_data_direction dir)
 59{
 60}
 61
 62extern void dma_sync_single_for_device(struct device *, dma_addr_t, size_t,
 63				       enum dma_data_direction);
 64extern void dma_sync_sg_for_device(struct device *, struct scatterlist *, int,
 65				   enum dma_data_direction);
 66
 67static inline void dma_sync_single_range_for_device(struct device *dev,
 68		dma_addr_t dma_handle, unsigned long offset, size_t size,
 69		enum dma_data_direction direction)
 70{
 71	/* just sync everything for now */
 72	dma_sync_single_for_device(dev, dma_handle, offset + size, direction);
 73}
 74
 75static inline void dma_sync_single_for_cpu(struct device *dev, dma_addr_t handle,
 76					   size_t size, enum dma_data_direction dir)
 77{
 78}
 79
 80static inline void dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg,
 81				       int nents, enum dma_data_direction dir)
 82{
 83}
 84
 85static inline void dma_sync_single_range_for_cpu(struct device *dev,
 86		dma_addr_t dma_handle, unsigned long offset, size_t size,
 87		enum dma_data_direction direction)
 88{
 89	/* just sync everything for now */
 90	dma_sync_single_for_cpu(dev, dma_handle, offset + size, direction);
 91}
 92
 93static inline int dma_mapping_error(struct device *dev, dma_addr_t handle)
 94{
 95	return 0;
 96}
 97
 98#else
 99#include <asm-generic/dma-mapping-broken.h>
100#endif
101
102#endif  /* _M68K_DMA_MAPPING_H */