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/scatterlist.h>
   6 #include <linux/swiotlb.h>
   7
   8 extern int xen_swiotlb_init(int verbose, bool early);
   9
  10 extern void
  11 *xen_swiotlb_alloc_coherent(struct device *hwdev, size_t size,
  12                             dma_addr_t *dma_handle, gfp_t flags,
  13                             unsigned long attrs);
  14
  15 extern void
  16 xen_swiotlb_free_coherent(struct device *hwdev, size_t size,
  17                           void *vaddr, dma_addr_t dma_handle,
  18                           unsigned long attrs);
  19
  20 extern dma_addr_t xen_swiotlb_map_page(struct device *dev, struct page *page,
  21                                        unsigned long offset, size_t size,
  22                                        enum dma_data_direction dir,
  23                                        unsigned long attrs);
  24
  25 extern void xen_swiotlb_unmap_page(struct device *hwdev, dma_addr_t dev_addr,
  26                                    size_t size, enum dma_data_direction dir,
  27                                    unsigned long attrs);
  28 extern int
  29 xen_swiotlb_map_sg_attrs(struct device *hwdev, struct scatterlist *sgl,
  30                          int nelems, enum dma_data_direction dir,
  31                          unsigned long attrs);
  32
  33 extern void
  34 xen_swiotlb_unmap_sg_attrs(struct device *hwdev, struct scatterlist *sgl,
  35                            int nelems, enum dma_data_direction dir,
  36                            unsigned long attrs);
  37
  38 extern void
  39 xen_swiotlb_sync_single_for_cpu(struct device *hwdev, dma_addr_t dev_addr,
  40                                 size_t size, enum dma_data_direction dir);
  41
  42 extern void
  43 xen_swiotlb_sync_sg_for_cpu(struct device *hwdev, struct scatterlist *sg,
  44                             int nelems, enum dma_data_direction dir);
  45
  46 extern void
  47 xen_swiotlb_sync_single_for_device(struct device *hwdev, dma_addr_t dev_addr,
  48                                    size_t size, enum dma_data_direction dir);
  49
  50 extern void
  51 xen_swiotlb_sync_sg_for_device(struct device *hwdev, struct scatterlist *sg,
  52                                int nelems, enum dma_data_direction dir);
  53
  54 extern int
  55 xen_swiotlb_dma_supported(struct device *hwdev, u64 mask);
  56
  57 extern int
  58 xen_swiotlb_set_dma_mask(struct device *dev, u64 dma_mask);
  59
  60 extern int
  61 xen_swiotlb_dma_mmap(struct device *dev, struct vm_area_struct *vma,
  62                      void *cpu_addr, dma_addr_t dma_addr, size_t size,
  63                      unsigned long attrs);
  64
  65 extern int
  66 xen_swiotlb_get_sgtable(struct device *dev, struct sg_table *sgt,
  67                         void *cpu_addr, dma_addr_t handle, size_t size,
  68                         unsigned long attrs);
  69 #endif /* __LINUX_SWIOTLB_XEN_H */