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authorChristoph Hellwig <hch@lst.de>2018-10-08 09:12:01 +0200
committerChristoph Hellwig <hch@lst.de>2018-10-19 08:53:24 +0200
commit886643b766321f15f63bd950be618cbb6dd22bbc (patch)
treed84cbe166a610723a06937fbb09c89ffcb608246 /arch/arm/Kconfig
parentswiotlb: add support for non-coherent DMA (diff)
downloadlinux-886643b766321f15f63bd950be618cbb6dd22bbc.tar.xz
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arm64: use the generic swiotlb_dma_ops
Now that the generic swiotlb code supports non-coherent DMA we can switch to it for arm64. For that we need to refactor the existing alloc/free/mmap/pgprot helpers to be used as the architecture hooks, and implement the standard arch_sync_dma_for_{device,cpu} hooks for cache maintaincance in the streaming dma hooks, which also implies using the generic dma_coherent flag in struct device. Note that we need to keep the old is_device_dma_coherent function around for now, so that the shared arm/arm64 Xen code keeps working. Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Catalin Marinas <catalin.marinas@arm.com>
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