#ifndef _ASM_DMA_MAPPING_H #define _ASM_DMA_MAPPING_H #include <asm/scatterlist.h> #include <asm/cache.h> void *dma_alloc_noncoherent(struct device *dev, size_t size, dma_addr_t *dma_handle, gfp_t flag); void dma_free_noncoherent(struct device *dev, size_t size, void *vaddr, dma_addr_t dma_handle); void *dma_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_handle, gfp_t flag); void dma_free_coherent(struct device *dev, size_t size, void *vaddr, dma_addr_t dma_handle); extern dma_addr_t dma_map_single(struct device *dev, void *ptr, size_t size, enum dma_data_direction direction); extern void dma_unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size, enum dma_data_direction direction); extern int dma_map_sg(struct device *dev, struct scatterlist *sg, int nents, enum dma_data_direction direction); extern dma_addr_t dma_map_page(struct device *dev, struct page *page, unsigned long offset, size_t size, enum dma_data_direction direction); extern void dma_unmap_page(struct device *dev, dma_addr_t dma_address, size_t size, enum dma_data_direction direction); extern void dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nhwentries, enum dma_data_direction direction); extern void dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle, size_t size, enum dma_data_direction direction); extern void dma_sync_single_for_device(struct device *dev, dma_addr_t dma_handle, size_t size, enum dma_data_direction direction); extern void dma_sync_single_range_for_cpu(struct device *dev, dma_addr_t dma_handle, unsigned long offset, size_t size, enum dma_data_direction direction); extern void dma_sync_single_range_for_device(struct device *dev, dma_addr_t dma_handle, unsigned long offset, size_t size, enum dma_data_direction direction); extern void dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, int nelems, enum dma_data_direction direction); extern void dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, int nelems, enum dma_data_direction direction); extern int dma_mapping_error(dma_addr_t dma_addr); extern int dma_supported(struct device *dev, u64 mask); static inline int dma_set_mask(struct device *dev, u64 mask) { if(!dev->dma_mask || !dma_supported(dev, mask)) return -EIO; *dev->dma_mask = mask; return 0; } static inline int dma_get_cache_alignment(void) { /* XXX Largest on any MIPS */ return 128; } extern int dma_is_consistent(struct device *dev, dma_addr_t dma_addr); extern void dma_cache_sync(struct device *dev, void *vaddr, size_t size, enum dma_data_direction direction); #define ARCH_HAS_DMA_DECLARE_COHERENT_MEMORY extern int dma_declare_coherent_memory(struct device *dev, dma_addr_t bus_addr, dma_addr_t device_addr, size_t size, int flags); extern void dma_release_declared_memory(struct device *dev); extern void * dma_mark_declared_memory_occupied(struct device *dev, dma_addr_t device_addr, size_t size); #endif /* _ASM_DMA_MAPPING_H */