1 /* DMA mapping. Nothing tricky here, just virt_to_phys */
3 #ifndef _ASM_CRIS_DMA_MAPPING_H
4 #define _ASM_CRIS_DMA_MAPPING_H
7 #include <linux/kernel.h>
11 #include <asm/scatterlist.h>
13 #define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f)
14 #define dma_free_noncoherent(d, s, v, h) dma_free_coherent(d, s, v, h)
17 #include <asm-generic/dma-coherent.h>
19 void *dma_alloc_coherent(struct device *dev, size_t size,
20 dma_addr_t *dma_handle, gfp_t flag);
22 void dma_free_coherent(struct device *dev, size_t size,
23 void *vaddr, dma_addr_t dma_handle);
26 dma_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_handle,
34 dma_free_coherent(struct device *dev, size_t size, void *cpu_addr,
35 dma_addr_t dma_handle)
40 static inline dma_addr_t
41 dma_map_single(struct device *dev, void *ptr, size_t size,
42 enum dma_data_direction direction)
44 BUG_ON(direction == DMA_NONE);
45 return virt_to_phys(ptr);
49 dma_unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size,
50 enum dma_data_direction direction)
52 BUG_ON(direction == DMA_NONE);
56 dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
57 enum dma_data_direction direction)
63 static inline dma_addr_t
64 dma_map_page(struct device *dev, struct page *page, unsigned long offset,
65 size_t size, enum dma_data_direction direction)
67 BUG_ON(direction == DMA_NONE);
68 return page_to_phys(page) + offset;
72 dma_unmap_page(struct device *dev, dma_addr_t dma_address, size_t size,
73 enum dma_data_direction direction)
75 BUG_ON(direction == DMA_NONE);
80 dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nhwentries,
81 enum dma_data_direction direction)
83 BUG_ON(direction == DMA_NONE);
87 dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle, size_t size,
88 enum dma_data_direction direction)
93 dma_sync_single_for_device(struct device *dev, dma_addr_t dma_handle, size_t size,
94 enum dma_data_direction direction)
99 dma_sync_single_range_for_cpu(struct device *dev, dma_addr_t dma_handle,
100 unsigned long offset, size_t size,
101 enum dma_data_direction direction)
106 dma_sync_single_range_for_device(struct device *dev, dma_addr_t dma_handle,
107 unsigned long offset, size_t size,
108 enum dma_data_direction direction)
113 dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, int nelems,
114 enum dma_data_direction direction)
119 dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, int nelems,
120 enum dma_data_direction direction)
125 dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
131 dma_supported(struct device *dev, u64 mask)
134 * we fall back to GFP_DMA when the mask isn't all 1s,
135 * so we can't guarantee allocations that must be
136 * within a tighter range than GFP_DMA..
138 if(mask < 0x00ffffff)
145 dma_set_mask(struct device *dev, u64 mask)
147 if(!dev->dma_mask || !dma_supported(dev, mask))
150 *dev->dma_mask = mask;
156 dma_get_cache_alignment(void)
158 return (1 << INTERNODE_CACHE_SHIFT);
161 #define dma_is_consistent(d, h) (1)
164 dma_cache_sync(struct device *dev, void *vaddr, size_t size,
165 enum dma_data_direction direction)