| From: |
| Marek Szyprowski <m.szyprowski@samsung.com> |
| To: |
| linux-arm-kernel@lists.infradead.org,
linaro-mm-sig@lists.linaro.org, linux-mm@kvack.org,
linux-arch@vger.kernel.org |
| Subject: |
| [PATCH 0/8 v3] ARM: DMA-mapping framework redesign |
| Date: |
| Tue, 18 Oct 2011 19:19:17 +0200 |
| Message-ID: |
| <1318958365-19120-1-git-send-email-m.szyprowski@samsung.com> |
| Cc: |
| Marek Szyprowski <m.szyprowski@samsung.com>,
Kyungmin Park <kyungmin.park@samsung.com>,
Arnd Bergmann <arnd@arndb.de>, Joerg Roedel <joro@8bytes.org>,
Russell King - ARM Linux <linux@arm.linux.org.uk>,
Shariq Hasnain <shariq.hasnain@linaro.org>,
Chunsang Jeong <chunsang.jeong@linaro.org>,
Krishna Reddy <vdumpa@nvidia.com> |
| Archive‑link: | |
Article |
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-Sept...
http://lists.linaro.org/pipermail/linaro-mm-sig/2011-Sept...
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/s...
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
