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 void xen_swiotlb_init(int verbose);
   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
  12 extern void
  13 xen_swiotlb_free_coherent(struct device *hwdev, size_t size,
  14                           void *vaddr, dma_addr_t dma_handle);
  15
  16 extern dma_addr_t xen_swiotlb_map_page(struct device *dev, struct page *page,
  17                                        unsigned long offset, size_t size,
  18                                        enum dma_data_direction dir,
  19                                        struct dma_attrs *attrs);
  20
  21 extern void xen_swiotlb_unmap_page(struct device *hwdev, dma_addr_t dev_addr,
  22                                    size_t size, enum dma_data_direction dir,
  23                                    struct dma_attrs *attrs);
  24 /*
  25 extern int
  26 xen_swiotlb_map_sg(struct device *hwdev, struct scatterlist *sg, int nents,
  27                    enum dma_data_direction dir);
  28
  29 extern void
  30 xen_swiotlb_unmap_sg(struct device *hwdev, struct scatterlist *sg, int nents,
  31                      enum dma_data_direction dir);
  32 */
  33 extern int
  34 xen_swiotlb_map_sg_attrs(struct device *hwdev, struct scatterlist *sgl,
  35                          int nelems, enum dma_data_direction dir,
  36                          struct dma_attrs *attrs);
  37
  38 extern void
  39 xen_swiotlb_unmap_sg_attrs(struct device *hwdev, struct scatterlist *sgl,
  40                            int nelems, enum dma_data_direction dir,
  41                            struct dma_attrs *attrs);
  42
  43 extern void
  44 xen_swiotlb_sync_single_for_cpu(struct device *hwdev, dma_addr_t dev_addr,
  45                                 size_t size, enum dma_data_direction dir);
  46
  47 extern void
  48 xen_swiotlb_sync_sg_for_cpu(struct device *hwdev, struct scatterlist *sg,
  49                             int nelems, enum dma_data_direction dir);
  50
  51 extern void
  52 xen_swiotlb_sync_single_for_device(struct device *hwdev, dma_addr_t dev_addr,
  53                                    size_t size, enum dma_data_direction dir);
  54
  55 extern void
  56 xen_swiotlb_sync_sg_for_device(struct device *hwdev, struct scatterlist *sg,
  57                                int nelems, enum dma_data_direction dir);
  58
  59 extern int
  60 xen_swiotlb_dma_mapping_error(struct device *hwdev, dma_addr_t dma_addr);
  61
  62 extern int
  63 xen_swiotlb_dma_supported(struct device *hwdev, u64 mask);
  64
  65 #endif /* __LINUX_SWIOTLB_XEN_H */