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 void *dma_alloc_coherent(struct device *dev, size_t size,
18 dma_addr_t *dma_handle, gfp_t flag);
20 void dma_free_coherent(struct device *dev, size_t size,
21 void *vaddr, dma_addr_t dma_handle);
24 dma_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_handle,
32 dma_free_coherent(struct device *dev, size_t size, void *cpu_addr,
33 dma_addr_t dma_handle)
38 static inline dma_addr_t
39 dma_map_single(struct device *dev, void *ptr, size_t size,
40 enum dma_data_direction direction)
42 BUG_ON(direction == DMA_NONE);
43 return virt_to_phys(ptr);
47 dma_unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size,
48 enum dma_data_direction direction)
50 BUG_ON(direction == DMA_NONE);
54 dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
55 enum dma_data_direction direction)
61 static inline dma_addr_t
62 dma_map_page(struct device *dev, struct page *page, unsigned long offset,
63 size_t size, enum dma_data_direction direction)
65 BUG_ON(direction == DMA_NONE);
66 return page_to_phys(page) + offset;
70 dma_unmap_page(struct device *dev, dma_addr_t dma_address, size_t size,
71 enum dma_data_direction direction)
73 BUG_ON(direction == DMA_NONE);
78 dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nhwentries,
79 enum dma_data_direction direction)
81 BUG_ON(direction == DMA_NONE);
85 dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle, size_t size,
86 enum dma_data_direction direction)
91 dma_sync_single_for_device(struct device *dev, dma_addr_t dma_handle, size_t size,
92 enum dma_data_direction direction)
97 dma_sync_single_range_for_cpu(struct device *dev, dma_addr_t dma_handle,
98 unsigned long offset, size_t size,
99 enum dma_data_direction direction)
104 dma_sync_single_range_for_device(struct device *dev, dma_addr_t dma_handle,
105 unsigned long offset, size_t size,
106 enum dma_data_direction direction)
111 dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, int nelems,
112 enum dma_data_direction direction)
117 dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, int nelems,
118 enum dma_data_direction direction)
123 dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
129 dma_supported(struct device *dev, u64 mask)
132 * we fall back to GFP_DMA when the mask isn't all 1s,
133 * so we can't guarantee allocations that must be
134 * within a tighter range than GFP_DMA..
136 if(mask < 0x00ffffff)
143 dma_set_mask(struct device *dev, u64 mask)
145 if(!dev->dma_mask || !dma_supported(dev, mask))
148 *dev->dma_mask = mask;
154 dma_get_cache_alignment(void)
156 return (1 << INTERNODE_CACHE_SHIFT);
159 #define dma_is_consistent(d, h) (1)
162 dma_cache_sync(struct device *dev, void *vaddr, size_t size,
163 enum dma_data_direction direction)