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 */ 70