Hello Marek,
I have tested below patch series for vanilla 3.4-rc2 (without videobuf2
support for dmabuf patches) with and without IOMMU support on origen
board. These patches are good now. You can add:
Tested-By: Subash Patel <subash.ramaswamy@xxxxxxxxxx> for whole series.
Regards,
Subash
On 04/10/2012 04:34 PM, Marek Szyprowski wrote:
Hello,
Linux v3.4-rc2, which include dma-mapping preparation patches, has been
released two days ago, now it's time for the next spin of ARM
dma-mapping redesign patches. This version includes various fixes posted
separately to v7, mainly related to incorrect io address space bitmap
setup and a major issue with broken mmap for memory which comes from
dma_declare_coherent(). The patches have been also rebased onto Linux
v3.4-rc2 which comes with dma_map_ops related changes.
The code has been tested on Samsung Exynos4 'UniversalC210' and NURI
boards with IOMMU driver posted by KyongHo Cho, I will put separate
branch which shows how to integrate this driver with this patchset.
The patches are also available on my git repository at:
git://git.linaro.org/people/mszyprowski/linux-dma-mapping.git 3.4-rc2-arm-dma-v8
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
v6:
http://www.spinics.net/lists/linux-mm/msg29903.html
v7:
http://www.spinics.net/lists/arm-kernel/msg162149.html
Best regards
Marek Szyprowski
Samsung Poland R&D Center
Patch summary:
Marek Szyprowski (10):
common: add dma_mmap_from_coherent() function
ARM: dma-mapping: use pr_* instread of printk
ARM: dma-mapping: introduce ARM_DMA_ERROR constant
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 | 1019 ++++++++++++++++++++++++++++++------
arch/arm/mm/vmregion.h | 2 +-
drivers/base/dma-coherent.c | 42 ++
include/asm-generic/dma-coherent.h | 4 +-
9 files changed, 1138 insertions(+), 467 deletions(-)
create mode 100644 arch/arm/include/asm/dma-iommu.h
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