Hello, This is another update on my attempt on DMA-mapping framework redesign. I focused mainly on the IOMMU mapper for ARM DMA-mapping implementation. DMA-mapping patches have been rebased onto Linux v3.1-rc9-next kernel with CMA v16 patches already applied. I've also integrated the code provided by Krishna Reddy and added the missing methods for IOMMU DMA mapper. The code has been tested on Samsung Exynos4 board. Here is the link to the initial version of the DMA-mapping redesign patches: http://www.spinics.net/lists/linux-mm/msg21241.html Second version of the patches: http://lists.linaro.org/pipermail/linaro-mm-sig/2011-September/000571.html http://lists.linaro.org/pipermail/linaro-mm-sig/2011-September/000577.html TODO: - start the discussion about chaning alloc_coherent into alloc_attrs in dma_map_ops structure. GIT tree will all the patches: http://git.infradead.org/users/kmpark/linux-2.6-samsung/shortlog/refs/heads/dma-mapping-v4 git://git.infradead.org/users/kmpark/linux-2.6-samsung dma-mapping-v4 Best regards -- Marek Szyprowski Samsung Poland R&D Center Patch summary: Marek Szyprowski (8): 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 common: dma-mapping: change alloc/free_coherent method to more generic alloc/free_attrs 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 | 78 +++- arch/arm/include/asm/device.h | 5 + arch/arm/include/asm/dma-iommu.h | 35 ++ arch/arm/include/asm/dma-mapping.h | 403 +++++------------ arch/arm/mm/dma-mapping.c | 869 +++++++++++++++++++++++++++++++----- arch/arm/mm/vmregion.h | 2 +- include/linux/dma-attrs.h | 1 + include/linux/dma-mapping.h | 13 +- 9 files changed, 973 insertions(+), 442 deletions(-) create mode 100644 arch/arm/include/asm/dma-iommu.h -- 1.7.1.569.g6f426 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>