Hello,
This is another update on my works DMA-mapping framework redesign for ARM architecture. It includes a few minor cleanup and fixes since the last version posted by the end of December 2011. This patch series is now 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-rc2 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-September/000571.html http://lists.linaro.org/pipermail/linaro-mm-sig/2011-September/000577.html
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
Best regards -- Marek Szyprowski Samsung Poland R&D Center
Patch summary:
Marek Szyprowski (7): 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 | 78 +++- arch/arm/include/asm/device.h | 4 + arch/arm/include/asm/dma-iommu.h | 34 ++ arch/arm/include/asm/dma-mapping.h | 404 +++++------------ arch/arm/mm/dma-mapping.c | 897 ++++++++++++++++++++++++++++++------ arch/arm/mm/vmregion.h | 2 +- 7 files changed, 980 insertions(+), 448 deletions(-) create mode 100644 arch/arm/include/asm/dma-iommu.h