include/xen/swiotlb-xen.h

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