[PATCHv7 0/9] ARM: DMA-mapping framework redesign

[Marek Szyprowski <m.szyprowski@samsung.com>]

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-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

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