MIPS: Octeon: refactor swiotlb code

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Share a common set of swiotlb operations, and to instead branch out in
__phys_to_dma/__dma_to_phys for the PCI vs non-PCI case.  Also use const
structures for the PCI methods so that attackers can't use them as
exploit vectors.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Patchwork: https://patchwork.linux-mips.org/patch/19532/
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

...

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Christoph Hellwig 2018-06-15 13:08:34 +02:00 • committed by Paul Burton

parent e20c5074f8

commit 97f9f9763a

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3 changed files with 71 additions and 94 deletions

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161

arch/mips/cavium-octeon/dma-octeon.c

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2

arch/mips/include/asm/mach-cavium-octeon/dma-coherence.h

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2

arch/mips/pci/pci-octeon.c

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