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_single_range_for_cpu(struct device *hwdev,
  19                                               dma_addr_t dev_addr,
  20                                               unsigned long offset,
  21                                               size_t size, int dir);
  22 extern void swiotlb_sync_single_range_for_device(struct device *hwdev,
  23                                                  dma_addr_t dev_addr,
  24                                                  unsigned long offset,
  25                                                  size_t size, int dir);
  26 extern void swiotlb_sync_sg_for_cpu(struct device *hwdev,
  27                                      struct scatterlist *sg, int nelems,
  28                                      int dir);
  29 extern void swiotlb_sync_sg_for_device(struct device *hwdev,
  30                                         struct scatterlist *sg, int nelems,
  31                                         int dir);
  32 extern int swiotlb_map_sg(struct device *hwdev, struct scatterlist *sg,
  33                       int nents, int direction);
  34 extern void swiotlb_unmap_sg(struct device *hwdev, struct scatterlist *sg,
  35                          int nents, int direction);
  36 extern int swiotlb_dma_mapping_error(dma_addr_t dma_addr);
  37 extern void *swiotlb_alloc_coherent (struct device *hwdev, size_t size,
  38                                      dma_addr_t *dma_handle, gfp_t flags);
  39 extern void swiotlb_free_coherent (struct device *hwdev, size_t size,
  40                                    void *vaddr, dma_addr_t dma_handle);
  41
  42 #ifdef CONFIG_SWIOTLB
  43 extern int swiotlb;
  44 #else
  45 #define swiotlb 0
  46 #endif
  47
  48 #endif