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swiotlb-xen: implement xen_swiotlb_dma_mmap callback

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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>
This commit is contained in:
Stefano Stabellini
2017-02-07 19:58:02 +02:00
committed by Konrad Rzeszutek Wilk
parent 602d9858f0
commit 7e91c7df29
3 changed files with 25 additions and 0 deletions
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5
include/xen/swiotlb-xen.h
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@@ -55,4 +55,9 @@ xen_swiotlb_dma_supported(struct device *hwdev, u64 mask);
extern int
xen_swiotlb_set_dma_mask(struct device *dev, u64 dma_mask);
extern int
xen_swiotlb_dma_mmap(struct device *dev, struct vm_area_struct *vma,
void *cpu_addr, dma_addr_t dma_addr, size_t size,
unsigned long attrs);
#endif /* __LINUX_SWIOTLB_XEN_H */