[PATCH] x86_64: Use function pointers to call DMA mapping functions
[linux-2.6.git] / include / asm-x86_64 / swiotlb.h
1 #ifndef _ASM_SWIOTLB_H
2 #define _ASM_SWTIOLB_H 1
3
4 #include <linux/config.h>
5
6 #include <asm/dma-mapping.h>
7
8 /* SWIOTLB interface */
9
10 extern dma_addr_t swiotlb_map_single(struct device *hwdev, void *ptr,
11                                      size_t size, int dir);
12 extern void *swiotlb_alloc_coherent(struct device *hwdev, size_t size,
13                        dma_addr_t *dma_handle, gfp_t flags);
14 extern void swiotlb_unmap_single(struct device *hwdev, dma_addr_t dev_addr,
15                                   size_t size, int dir);
16 extern void swiotlb_sync_single_for_cpu(struct device *hwdev,
17                                          dma_addr_t dev_addr,
18                                          size_t size, int dir);
19 extern void swiotlb_sync_single_for_device(struct device *hwdev,
20                                             dma_addr_t dev_addr,
21                                             size_t size, int dir);
22 extern void swiotlb_sync_single_range_for_cpu(struct device *hwdev,
23                                               dma_addr_t dev_addr,
24                                               unsigned long offset,
25                                               size_t size, int dir);
26 extern void swiotlb_sync_single_range_for_device(struct device *hwdev,
27                                                  dma_addr_t dev_addr,
28                                                  unsigned long offset,
29                                                  size_t size, int dir);
30 extern void swiotlb_sync_sg_for_cpu(struct device *hwdev,
31                                      struct scatterlist *sg, int nelems,
32                                      int dir);
33 extern void swiotlb_sync_sg_for_device(struct device *hwdev,
34                                         struct scatterlist *sg, int nelems,
35                                         int dir);
36 extern int swiotlb_map_sg(struct device *hwdev, struct scatterlist *sg,
37                       int nents, int direction);
38 extern void swiotlb_unmap_sg(struct device *hwdev, struct scatterlist *sg,
39                          int nents, int direction);
40 extern int swiotlb_dma_mapping_error(dma_addr_t dma_addr);
41 extern void swiotlb_free_coherent (struct device *hwdev, size_t size,
42                                    void *vaddr, dma_addr_t dma_handle);
43 extern int swiotlb_dma_supported(struct device *hwdev, u64 mask);
44 extern void swiotlb_init(void);
45
46 #ifdef CONFIG_SWIOTLB
47 extern int swiotlb;
48 #else
49 #define swiotlb 0
50 #endif
51
52 extern void pci_swiotlb_init(void);
53
54 #endif /* _ASM_SWTIOLB_H */