include/xen/swiotlb-xen.h

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