HWPOISON: Add a madvise() injector for soft page offlining
[linux-2.6.git] / include / asm-generic / dma-coherent.h
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