df13283e4b
commit 7e91c7df29b5e196de3dc6f086c8937973bd0b88 upstream. This function creates userspace mapping for the DMA-coherent memory. Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Signed-off-by: Oleksandr Dmytryshyn <oleksandr.dmytryshyn@globallogic.com> Signed-off-by: Andrii Anisov <andrii_anisov@epam.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
67 lines
2.1 KiB
C
67 lines
2.1 KiB
C
#ifndef __LINUX_SWIOTLB_XEN_H
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#define __LINUX_SWIOTLB_XEN_H
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#include <linux/dma-direction.h>
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#include <linux/swiotlb.h>
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extern int xen_swiotlb_init(int verbose, bool early);
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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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unsigned long attrs);
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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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unsigned long attrs);
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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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unsigned long 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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unsigned long attrs);
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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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unsigned long 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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unsigned long 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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extern int
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xen_swiotlb_set_dma_mask(struct device *dev, u64 dma_mask);
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extern int
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xen_swiotlb_dma_mmap(struct device *dev, struct vm_area_struct *vma,
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void *cpu_addr, dma_addr_t dma_addr, size_t size,
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unsigned long attrs);
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#endif /* __LINUX_SWIOTLB_XEN_H */
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