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#ifndef _ASM_SWIOTLB_H
#define _ASM_SWIOTLB_H 1
/* SWIOTLB interface */
extern dma_addr_t swiotlb_map_single(struct device *hwdev, void *ptr, size_t size,
int dir);
extern void swiotlb_unmap_single(struct device *hwdev, dma_addr_t dev_addr,
size_t size, int dir);
extern void swiotlb_sync_single_for_cpu(struct device *hwdev,
dma_addr_t dev_addr,
size_t size, int dir);
extern void swiotlb_sync_single_for_device(struct device *hwdev,
dma_addr_t dev_addr,
size_t size, int dir);
extern void swiotlb_sync_sg_for_cpu(struct device *hwdev,
struct scatterlist *sg, int nelems,
int dir);
extern void swiotlb_sync_sg_for_device(struct device *hwdev,
struct scatterlist *sg, int nelems,
int dir);
extern int swiotlb_map_sg(struct device *hwdev, struct scatterlist *sg,
int nents, int direction);
extern void swiotlb_unmap_sg(struct device *hwdev, struct scatterlist *sg,
int nents, int direction);
extern int swiotlb_dma_mapping_error(dma_addr_t dma_addr);
#ifdef CONFIG_HIGHMEM
extern dma_addr_t swiotlb_map_page(struct device *hwdev, struct page *page,
unsigned long offset, size_t size,
enum dma_data_direction direction);
extern void swiotlb_unmap_page(struct device *hwdev, dma_addr_t dma_address,
size_t size, enum dma_data_direction direction);
#endif
extern int swiotlb_dma_supported(struct device *hwdev, u64 mask);
extern void swiotlb_init(void);
#ifdef CONFIG_SWIOTLB
extern int swiotlb;
#else
#define swiotlb 0
#endif
#endif
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