diff options
Diffstat (limited to 'include/asm-blackfin/dma-mapping.h')
-rw-r--r-- | include/asm-blackfin/dma-mapping.h | 83 |
1 files changed, 0 insertions, 83 deletions
diff --git a/include/asm-blackfin/dma-mapping.h b/include/asm-blackfin/dma-mapping.h deleted file mode 100644 index 1a13c2fc3667..000000000000 --- a/include/asm-blackfin/dma-mapping.h +++ /dev/null @@ -1,83 +0,0 @@ -#ifndef _BLACKFIN_DMA_MAPPING_H -#define _BLACKFIN_DMA_MAPPING_H - -#include <asm/scatterlist.h> - -void dma_alloc_init(unsigned long start, unsigned long end); -void *dma_alloc_coherent(struct device *dev, size_t size, - dma_addr_t *dma_handle, gfp_t gfp); -void dma_free_coherent(struct device *dev, size_t size, void *vaddr, - dma_addr_t dma_handle); - -/* - * Now for the API extensions over the pci_ one - */ -#define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f) -#define dma_free_noncoherent(d, s, v, h) dma_free_coherent(d, s, v, h) - -#define dma_mapping_error - -/* - * Map a single buffer of the indicated size for DMA in streaming mode. - * The 32-bit bus address to use is returned. - * - * Once the device is given the dma address, the device owns this memory - * until either pci_unmap_single or pci_dma_sync_single is performed. - */ -extern dma_addr_t dma_map_single(struct device *dev, void *ptr, size_t size, - enum dma_data_direction direction); - -static inline dma_addr_t -dma_map_page(struct device *dev, struct page *page, - unsigned long offset, size_t size, - enum dma_data_direction dir) -{ - return dma_map_single(dev, page_address(page) + offset, size, dir); -} - -/* - * Unmap a single streaming mode DMA translation. The dma_addr and size - * must match what was provided for in a previous pci_map_single call. All - * other usages are undefined. - * - * After this call, reads by the cpu to the buffer are guarenteed to see - * whatever the device wrote there. - */ -extern void dma_unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size, - enum dma_data_direction direction); - -static inline void -dma_unmap_page(struct device *dev, dma_addr_t dma_addr, size_t size, - enum dma_data_direction dir) -{ - dma_unmap_single(dev, dma_addr, size, dir); -} - -/* - * Map a set of buffers described by scatterlist in streaming - * mode for DMA. This is the scather-gather version of the - * above pci_map_single interface. Here the scatter gather list - * elements are each tagged with the appropriate dma address - * and length. They are obtained via sg_dma_{address,length}(SG). - * - * NOTE: An implementation may be able to use a smaller number of - * DMA address/length pairs than there are SG table elements. - * (for example via virtual mapping capabilities) - * The routine returns the number of addr/length pairs actually - * used, at most nents. - * - * Device ownership issues as mentioned above for pci_map_single are - * the same here. - */ -extern int dma_map_sg(struct device *dev, struct scatterlist *sg, int nents, - enum dma_data_direction direction); - -/* - * Unmap a set of streaming mode DMA translations. - * Again, cpu read rules concerning calls here are the same as for - * pci_unmap_single() above. - */ -extern void dma_unmap_sg(struct device *dev, struct scatterlist *sg, - int nhwentries, enum dma_data_direction direction); - -#endif /* _BLACKFIN_DMA_MAPPING_H */ |