1#ifndef _ASM_SWIOTLB_H
2#define _ASM_SWIOTLB_H 1
3
4#include <asm/dma-mapping.h>
5
6/* SWIOTLB interface */
7
8extern dma_addr_t swiotlb_map_single(struct device *hwdev, void *ptr,
9				     size_t size, int dir);
10extern void *swiotlb_alloc_coherent(struct device *hwdev, size_t size,
11                       dma_addr_t *dma_handle, gfp_t flags);
12extern void swiotlb_unmap_single(struct device *hwdev, dma_addr_t dev_addr,
13				  size_t size, int dir);
14extern void swiotlb_sync_single_for_cpu(struct device *hwdev,
15					 dma_addr_t dev_addr,
16					 size_t size, int dir);
17extern void swiotlb_sync_single_for_device(struct device *hwdev,
18					    dma_addr_t dev_addr,
19					    size_t size, int dir);
20extern void swiotlb_sync_single_range_for_cpu(struct device *hwdev,
21					      dma_addr_t dev_addr,
22					      unsigned long offset,
23					      size_t size, int dir);
24extern void swiotlb_sync_single_range_for_device(struct device *hwdev,
25						 dma_addr_t dev_addr,
26						 unsigned long offset,
27						 size_t size, int dir);
28extern void swiotlb_sync_sg_for_cpu(struct device *hwdev,
29				     struct scatterlist *sg, int nelems,
30				     int dir);
31extern void swiotlb_sync_sg_for_device(struct device *hwdev,
32					struct scatterlist *sg, int nelems,
33					int dir);
34extern int swiotlb_map_sg(struct device *hwdev, struct scatterlist *sg,
35		      int nents, int direction);
36extern void swiotlb_unmap_sg(struct device *hwdev, struct scatterlist *sg,
37			 int nents, int direction);
38extern int swiotlb_dma_mapping_error(dma_addr_t dma_addr);
39extern void swiotlb_free_coherent (struct device *hwdev, size_t size,
40				   void *vaddr, dma_addr_t dma_handle);
41extern int swiotlb_dma_supported(struct device *hwdev, u64 mask);
42extern void swiotlb_init(void);
43
44extern int swiotlb_force;
45
46#ifdef CONFIG_SWIOTLB
47extern int swiotlb;
48#else
49#define swiotlb 0
50#endif
51
52extern void pci_swiotlb_init(void);
53
54static inline void dma_mark_clean(void *addr, size_t size) {}
55
56#endif /* _ASM_SWIOTLB_H */
57