Full support for Ginger Console
[linux-ginger.git] / include / asm-generic / dma-coherent.h
blob85a3ffaa024208e0e00299641b320e67b0d4999e
1 #ifndef DMA_COHERENT_H
2 #define DMA_COHERENT_H
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);
14 * Standard interface
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);
21 extern void
22 dma_release_declared_memory(struct device *dev);
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
32 #endif