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awilliam
GitHub Repository: awilliam/linux-vfio
 Path: blob/master/include/xen/swiotlb-xen.h
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#ifndef __LINUX_SWIOTLB_XEN_H

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#define __LINUX_SWIOTLB_XEN_H

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#include <linux/swiotlb.h>

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extern void xen_swiotlb_init(int verbose);

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extern void

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*xen_swiotlb_alloc_coherent(struct device *hwdev, size_t size,

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			    dma_addr_t *dma_handle, gfp_t flags);

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extern void

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xen_swiotlb_free_coherent(struct device *hwdev, size_t size,

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			  void *vaddr, dma_addr_t dma_handle);

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extern dma_addr_t xen_swiotlb_map_page(struct device *dev, struct page *page,

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				       unsigned long offset, size_t size,

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				       enum dma_data_direction dir,

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				       struct dma_attrs *attrs);

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extern void xen_swiotlb_unmap_page(struct device *hwdev, dma_addr_t dev_addr,

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				   size_t size, enum dma_data_direction dir,

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				   struct dma_attrs *attrs);

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/*

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extern int

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xen_swiotlb_map_sg(struct device *hwdev, struct scatterlist *sg, int nents,

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		   enum dma_data_direction dir);

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extern void

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xen_swiotlb_unmap_sg(struct device *hwdev, struct scatterlist *sg, int nents,

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		     enum dma_data_direction dir);

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*/

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extern int

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xen_swiotlb_map_sg_attrs(struct device *hwdev, struct scatterlist *sgl,

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			 int nelems, enum dma_data_direction dir,

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			 struct dma_attrs *attrs);

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extern void

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xen_swiotlb_unmap_sg_attrs(struct device *hwdev, struct scatterlist *sgl,

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			   int nelems, enum dma_data_direction dir,

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			   struct dma_attrs *attrs);

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extern void

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xen_swiotlb_sync_single_for_cpu(struct device *hwdev, dma_addr_t dev_addr,

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				size_t size, enum dma_data_direction dir);

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extern void

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xen_swiotlb_sync_sg_for_cpu(struct device *hwdev, struct scatterlist *sg,

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			    int nelems, enum dma_data_direction dir);

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extern void

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xen_swiotlb_sync_single_for_device(struct device *hwdev, dma_addr_t dev_addr,

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				   size_t size, enum dma_data_direction dir);

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extern void

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xen_swiotlb_sync_sg_for_device(struct device *hwdev, struct scatterlist *sg,

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			       int nelems, enum dma_data_direction dir);

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extern int

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xen_swiotlb_dma_mapping_error(struct device *hwdev, dma_addr_t dma_addr);

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extern int

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xen_swiotlb_dma_supported(struct device *hwdev, u64 mask);

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#endif /* __LINUX_SWIOTLB_XEN_H */

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