git.baikalelectronics.ru Git - kernel.git/commit

]> git.baikalelectronics.ru Git - kernel.git/commit

author	Benjamin Herrenschmidt <benh@kernel.crashing.org>
	Wed, 24 Jun 2015 05:25:31 +0000 (15:25 +1000)
committer	Michael Ellerman <mpe@ellerman.id.au>
	Mon, 13 Jul 2015 00:10:55 +0000 (10:10 +1000)
commit	4fa1389a9bf2ac56486cac0ff4ec255a90b5e6e0
tree	89abc8109d548572af812a13de798fe0d4b32349	tree \| snapshot
parent	24150356773d3988fdf622501ad17c4685f673ac	commit \| diff

powerpc/iommu: Support "hybrid" iommu/direct DMA ops for coherent_mask < dma_mask

This patch adds the ability to the DMA direct ops to fallback to the IOMMU
ops for coherent alloc/free if the coherent mask of the device isn't
suitable for accessing the direct DMA space and the device also happens
to have an active IOMMU table.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

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arch/powerpc/Kconfig		diff \| blob \| history
arch/powerpc/include/asm/dma-mapping.h		diff \| blob \| history
arch/powerpc/kernel/dma-iommu.c		diff \| blob \| history
arch/powerpc/kernel/dma-swiotlb.c		diff \| blob \| history
arch/powerpc/kernel/dma.c		diff \| blob \| history