1 #ifndef _ASM_DMA_MAPPING_H
2 #define _ASM_DMA_MAPPING_H
4 #include <linux/device.h>
5 #include <asm/scatterlist.h>
8 void *dma_alloc_noncoherent(struct device *dev, size_t size,
9 dma_addr_t *dma_handle, int flag);
11 void dma_free_noncoherent(struct device *dev, size_t size,
12 void *vaddr, dma_addr_t dma_handle);
14 void *dma_alloc_coherent(struct device *dev, size_t size,
15 dma_addr_t *dma_handle, int flag);
17 void dma_free_coherent(struct device *dev, size_t size,
18 void *vaddr, dma_addr_t dma_handle);
20 extern dma_addr_t dma_map_single(struct device *dev, void *ptr, size_t size,
21 enum dma_data_direction direction);
22 extern void dma_unmap_single(struct device *dev, dma_addr_t dma_addr,
23 size_t size, enum dma_data_direction direction);
24 extern int dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
25 enum dma_data_direction direction);
26 extern dma_addr_t dma_map_page(struct device *dev, struct page *page,
27 unsigned long offset, size_t size, enum dma_data_direction direction);
28 extern void dma_unmap_page(struct device *dev, dma_addr_t dma_address,
29 size_t size, enum dma_data_direction direction);
30 extern void dma_unmap_sg(struct device *dev, struct scatterlist *sg,
31 int nhwentries, enum dma_data_direction direction);
32 extern void dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle,
33 size_t size, enum dma_data_direction direction);
34 extern void dma_sync_single_for_device(struct device *dev,
35 dma_addr_t dma_handle, size_t size, enum dma_data_direction direction);
36 extern void dma_sync_single_range_for_cpu(struct device *dev,
37 dma_addr_t dma_handle, unsigned long offset, size_t size,
38 enum dma_data_direction direction);
39 extern void dma_sync_single_range_for_device(struct device *dev,
40 dma_addr_t dma_handle, unsigned long offset, size_t size,
41 enum dma_data_direction direction);
42 extern void dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg,
43 int nelems, enum dma_data_direction direction);
44 extern void dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg,
45 int nelems, enum dma_data_direction direction);
46 extern int dma_mapping_error(dma_addr_t dma_addr);
47 extern int dma_supported(struct device *dev, u64 mask);
50 dma_set_mask(struct device *dev, u64 mask)
52 if(!dev->dma_mask || !dma_supported(dev, mask))
55 *dev->dma_mask = mask;
61 dma_get_cache_alignment(void)
63 /* XXX Largest on any MIPS */
67 extern int dma_is_consistent(dma_addr_t dma_addr);
69 extern void dma_cache_sync(void *vaddr, size_t size,
70 enum dma_data_direction direction);
72 #endif /* _ASM_DMA_MAPPING_H */