include/asm-x86_64/swiotlb.h

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