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1 | #ifndef DMA_COHERENT_H |
2 | #define DMA_COHERENT_H |
3 | |
4 | #ifdef CONFIG_HAVE_GENERIC_DMA_COHERENT |
5 | /* |
6 | * These two functions are only for dma allocator. |
7 | * Don't use them in device drivers. |
8 | */ |
9 | int dma_alloc_from_coherent(struct device *dev, ssize_t size, |
10 | dma_addr_t *dma_handle, void **ret); |
11 | int dma_release_from_coherent(struct device *dev, int order, void *vaddr); |
12 | |
13 | /* |
14 | * Standard interface |
15 | */ |
16 | #define ARCH_HAS_DMA_DECLARE_COHERENT_MEMORY |
17 | extern int |
18 | dma_declare_coherent_memory(struct device *dev, dma_addr_t bus_addr, |
19 | dma_addr_t device_addr, size_t size, int flags); |
20 | |
21 | extern void |
22 | dma_release_declared_memory(struct device *dev); |
23 | |
24 | extern void * |
25 | dma_mark_declared_memory_occupied(struct device *dev, |
26 | dma_addr_t device_addr, size_t size); |
27 | #else |
28 | #define dma_alloc_from_coherent(dev, size, handle, ret) (0) |
29 | #define dma_release_from_coherent(dev, order, vaddr) (0) |
30 | #endif |
31 | |
32 | #endif |
33 |
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Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
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v3.9