linux/include/xen/swiotlb-xen.h
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   1#ifndef __LINUX_SWIOTLB_XEN_H
   2#define __LINUX_SWIOTLB_XEN_H
   3
   4#include <linux/swiotlb.h>
   5
   6extern int xen_swiotlb_init(int verbose, bool early);
   7
   8extern void
   9*xen_swiotlb_alloc_coherent(struct device *hwdev, size_t size,
  10                            dma_addr_t *dma_handle, gfp_t flags,
  11                            struct dma_attrs *attrs);
  12
  13extern void
  14xen_swiotlb_free_coherent(struct device *hwdev, size_t size,
  15                          void *vaddr, dma_addr_t dma_handle,
  16                          struct dma_attrs *attrs);
  17
  18extern dma_addr_t xen_swiotlb_map_page(struct device *dev, struct page *page,
  19                                       unsigned long offset, size_t size,
  20                                       enum dma_data_direction dir,
  21                                       struct dma_attrs *attrs);
  22
  23extern void xen_swiotlb_unmap_page(struct device *hwdev, dma_addr_t dev_addr,
  24                                   size_t size, enum dma_data_direction dir,
  25                                   struct dma_attrs *attrs);
  26extern int
  27xen_swiotlb_map_sg_attrs(struct device *hwdev, struct scatterlist *sgl,
  28                         int nelems, enum dma_data_direction dir,
  29                         struct dma_attrs *attrs);
  30
  31extern void
  32xen_swiotlb_unmap_sg_attrs(struct device *hwdev, struct scatterlist *sgl,
  33                           int nelems, enum dma_data_direction dir,
  34                           struct dma_attrs *attrs);
  35
  36extern void
  37xen_swiotlb_sync_single_for_cpu(struct device *hwdev, dma_addr_t dev_addr,
  38                                size_t size, enum dma_data_direction dir);
  39
  40extern void
  41xen_swiotlb_sync_sg_for_cpu(struct device *hwdev, struct scatterlist *sg,
  42                            int nelems, enum dma_data_direction dir);
  43
  44extern void
  45xen_swiotlb_sync_single_for_device(struct device *hwdev, dma_addr_t dev_addr,
  46                                   size_t size, enum dma_data_direction dir);
  47
  48extern void
  49xen_swiotlb_sync_sg_for_device(struct device *hwdev, struct scatterlist *sg,
  50                               int nelems, enum dma_data_direction dir);
  51
  52extern int
  53xen_swiotlb_dma_mapping_error(struct device *hwdev, dma_addr_t dma_addr);
  54
  55extern int
  56xen_swiotlb_dma_supported(struct device *hwdev, u64 mask);
  57
  58#endif /* __LINUX_SWIOTLB_XEN_H */
  59
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