2 #define _ASM_SWIOTLB_H 1
4 /* SWIOTLB interface */
6 extern dma_addr_t swiotlb_map_single(struct device *hwdev, void *ptr, size_t size,
8 extern void swiotlb_unmap_single(struct device *hwdev, dma_addr_t dev_addr,
10 extern void swiotlb_sync_single_for_cpu(struct device *hwdev,
12 size_t size, int dir);
13 extern void swiotlb_sync_single_for_device(struct device *hwdev,
15 size_t size, int dir);
16 extern void swiotlb_sync_sg_for_cpu(struct device *hwdev,
17 struct scatterlist *sg, int nelems,
19 extern void swiotlb_sync_sg_for_device(struct device *hwdev,
20 struct scatterlist *sg, int nelems,
22 extern int swiotlb_map_sg(struct device *hwdev, struct scatterlist *sg,
23 int nents, int direction);
24 extern void swiotlb_unmap_sg(struct device *hwdev, struct scatterlist *sg,
25 int nents, int direction);
26 extern int swiotlb_dma_mapping_error(dma_addr_t dma_addr);
27 extern dma_addr_t swiotlb_map_page(struct device *hwdev, struct page *page,
28 unsigned long offset, size_t size,
29 enum dma_data_direction direction);
30 extern void swiotlb_unmap_page(struct device *hwdev, dma_addr_t dma_address,
31 size_t size, enum dma_data_direction direction);
32 extern int swiotlb_dma_supported(struct device *hwdev, u64 mask);
33 extern void swiotlb_init(void);
35 /* Width of DMA addresses in the IO TLB. 30 bits is a b44 limitation. */
36 #define IO_TLB_DMA_BITS 30