tree 4b7f513da50a3bce1cca7a28949258642e9c8ab7
parent 35ddb69cd223eea5b1c68af753ed014208b6144e
author Christoph Hellwig <hch@lst.de> 1523885091 +0200
committer Christoph Hellwig <hch@lst.de> 1526712372 +0200

dma-mapping: provide a generic dma-noncoherent implementation

Add a new dma_map_ops implementation that uses dma-direct for the
address mapping of streaming mappings, and which requires arch-specific
implemenations of coherent allocate/free.

Architectures have to provide flushing helpers to ownership trasnfers
to the device and/or CPU, and can provide optional implementations of
the coherent mmap functionality, and the cache_flush routines for
non-coherent long term allocations.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Tested-by: Alexey Brodkin <abrodkin@synopsys.com>
Acked-by: Vineet Gupta <vgupta@synopsys.com>