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MIPS: consolidate the swiotlb implementations

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Octeon and Loongson share exactly the same code, move it into a common
implementation, and use that implementation directly from get_arch_dma_ops.

Also provide the expected dma-direct.h helpers directly instead of
delegating to platform dma-coherence.h headers.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Patchwork: https://patchwork.linux-mips.org/patch/19534/
Signed-off-by: Paul Burton <paul.burton@mips.com>
Cc: Florian Fainelli <f.fainelli@gmail.com>
Cc: David Daney <david.daney@cavium.com>
Cc: Kevin Cernekee <cernekee@gmail.com>
Cc: Jiaxun Yang <jiaxun.yang@flygoat.com>
Cc: Tom Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Huacai Chen <chenhc@lemote.com>
Cc: iommu@lists.linux-foundation.org
Cc: linux-mips@linux-mips.org
This commit is contained in:
Christoph Hellwig
2018-06-15 13:08:36 +02:00
committed by Paul Burton
parent e799de3efb
commit f6d302e33d
8 changed files with 84 additions and 153 deletions
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5
arch/mips/include/asm/dma-mapping.h
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@@ -11,10 +11,15 @@
#endif
extern const struct dma_map_ops *mips_dma_map_ops;
extern const struct dma_map_ops mips_swiotlb_ops;
static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus)
{
#ifdef CONFIG_SWIOTLB
return &mips_swiotlb_ops;
#else
return mips_dma_map_ops;
#endif
}
#define arch_setup_dma_ops arch_setup_dma_ops