[PATCH] Fix handling spurious page fault for hugetlb region
[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 /* SWIOTLB interface */
7
8 extern dma_addr_t swiotlb_map_single(struct device *hwdev, void *ptr, size_t size,
9                                       int dir);
10 extern void swiotlb_unmap_single(struct device *hwdev, dma_addr_t dev_addr,
11                                   size_t size, int dir);
12 extern void swiotlb_sync_single_for_cpu(struct device *hwdev,
13                                          dma_addr_t dev_addr,
14                                          size_t size, int dir);
15 extern void swiotlb_sync_single_for_device(struct device *hwdev,
16                                             dma_addr_t dev_addr,
17                                             size_t size, int dir);
18 extern void swiotlb_sync_sg_for_cpu(struct device *hwdev,
19                                      struct scatterlist *sg, int nelems,
20                                      int dir);
21 extern void swiotlb_sync_sg_for_device(struct device *hwdev,
22                                         struct scatterlist *sg, int nelems,
23                                         int dir);
24 extern int swiotlb_map_sg(struct device *hwdev, struct scatterlist *sg,
25                       int nents, int direction);
26 extern void swiotlb_unmap_sg(struct device *hwdev, struct scatterlist *sg,
27                          int nents, int direction);
28 extern int swiotlb_dma_mapping_error(dma_addr_t dma_addr);
29 extern void *swiotlb_alloc_coherent (struct device *hwdev, size_t size,
30                                      dma_addr_t *dma_handle, int flags);
31 extern void swiotlb_free_coherent (struct device *hwdev, size_t size,
32                                    void *vaddr, dma_addr_t dma_handle);
33
34 #ifdef CONFIG_SWIOTLB
35 extern int swiotlb;
36 #else
37 #define swiotlb 0
38 #endif
39
40 #endif