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ARM: DMA-mapping framework redesign
Hello, This is yet another update on my works DMA-mapping framework redesign for ARM architecture. It includes a few minor cleanup and fixes reported by Konrad Rzeszutek Wilk and Krishna Reddy. This version uses vmalloc for allocating page pointers array if it is larger than PAGE_SIZE. The chained allocation which fits inside a set of PAGE_SIZE units will be added later, once the base patches are merged. Like the previous version, this patchset is also based on the generic, cross-arch dma-mapping redesign patches posted in the "[PATCH 00/14] DMA-mapping framework redesign preparation" thread: http://www.spinics.net/lists/linux-sh/msg09777.html All patches have been now rebased onto v3.3-rc5 kernel. All the code has been tested on Samsung Exynos4 'UniversalC210' board with IOMMU driver posted by KyongHo Cho. History of the development: v1: (initial version of the DMA-mapping redesign patches): http://www.spinics.net/lists/linux-mm/msg21241.html v2: http://lists.linaro.org/pipermail/linaro-mm-sig/2011-Sept... http://lists.linaro.org/pipermail/linaro-mm-sig/2011-Sept... v3: http://www.spinics.net/lists/linux-mm/msg25490.html v4 and v5: http://www.spinics.net/lists/arm-kernel/msg151147.html http://www.spinics.net/lists/arm-kernel/msg154889.html v6: http://www.spinics.net/lists/linux-mm/msg29903.html Best regards -- Marek Szyprowski Samsung Poland R&D Center Patch summary: Marek Szyprowski (9): ARM: dma-mapping: introduce ARM_DMA_ERROR constant ARM: dma-mapping: use pr_* instread of printk ARM: dma-mapping: remove offset parameter to prepare for generic dma_ops ARM: dma-mapping: use asm-generic/dma-mapping-common.h ARM: dma-mapping: implement dma sg methods on top of any generic dma ops ARM: dma-mapping: move all dma bounce code to separate dma ops structure ARM: dma-mapping: remove redundant code and cleanup ARM: dma-mapping: use alloc, mmap, free from dma_ops ARM: dma-mapping: add support for IOMMU mapper arch/arm/Kconfig | 9 + arch/arm/common/dmabounce.c | 84 +++- arch/arm/include/asm/device.h | 4 + arch/arm/include/asm/dma-iommu.h | 34 ++ arch/arm/include/asm/dma-mapping.h | 407 ++++----------- arch/arm/mm/dma-mapping.c | 1013 ++++++++++++++++++++++++++++++------ arch/arm/mm/vmregion.h | 2 +- 7 files changed, 1088 insertions(+), 465 deletions(-) create mode 100644 arch/arm/include/asm/dma-iommu.h -- 1.7.1.569.g6f426 |
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