include/asm-x86_64/swiotlb.h

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