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 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 /* 27 extern int 28 xen_swiotlb_map_sg(struct device *hwdev, struct scatterlist *sg, int nents, 29 enum dma_data_direction dir); 30 31 extern void 32 xen_swiotlb_unmap_sg(struct device *hwdev, struct scatterlist *sg, int nents, 33 enum dma_data_direction dir); 34 */ 35 extern int 36 xen_swiotlb_map_sg_attrs(struct device *hwdev, struct scatterlist *sgl, 37 int nelems, enum dma_data_direction dir, 38 struct dma_attrs *attrs); 39 40 extern void 41 xen_swiotlb_unmap_sg_attrs(struct device *hwdev, struct scatterlist *sgl, 42 int nelems, enum dma_data_direction dir, 43 struct dma_attrs *attrs); 44 45 extern void 46 xen_swiotlb_sync_single_for_cpu(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_cpu(struct device *hwdev, struct scatterlist *sg, 51 int nelems, enum dma_data_direction dir); 52 53 extern void 54 xen_swiotlb_sync_single_for_device(struct device *hwdev, dma_addr_t dev_addr, 55 size_t size, enum dma_data_direction dir); 56 57 extern void 58 xen_swiotlb_sync_sg_for_device(struct device *hwdev, struct scatterlist *sg, 59 int nelems, enum dma_data_direction dir); 60 61 extern int 62 xen_swiotlb_dma_mapping_error(struct device *hwdev, dma_addr_t dma_addr); 63 64 extern int 65 xen_swiotlb_dma_supported(struct device *hwdev, u64 mask); 66 67 #endif /* __LINUX_SWIOTLB_XEN_H */ 68