[PATCH V2 2/3] powerpc: Add support for swiotlb on 32-bit

[Kumar Gala]

On May 14, 2009, at 5:42 PM, Becky Bruce wrote:

> This patch includes the basic infrastructure to use swiotlb
> bounce buffering on 32-bit powerpc.  It is not yet enabled on
> any platforms.  Probably the most interesting bit is the
> addition of addr_needs_map to dma_ops - we need this as
> a dma_op because the decision of whether or not an addr
> can be mapped by a device is device-specific.
>
> Signed-off-by: Becky Bruce <beckyb at kernel.crashing.org>
> ---
> arch/powerpc/Kconfig                   |   12 ++-
> arch/powerpc/include/asm/dma-mapping.h |   11 ++
> arch/powerpc/include/asm/swiotlb.h     |   27 +++++
> arch/powerpc/kernel/Makefile           |    1 +
> arch/powerpc/kernel/dma-swiotlb.c      |  163 +++++++++++++++++++++++ 
> +++++++++
> arch/powerpc/kernel/dma.c              |    2 +-
> arch/powerpc/kernel/setup_32.c         |    6 +
> arch/powerpc/kernel/setup_64.c         |    6 +
> 8 files changed, 226 insertions(+), 2 deletions(-)
> create mode 100644 arch/powerpc/include/asm/swiotlb.h
> create mode 100644 arch/powerpc/kernel/dma-swiotlb.c

Acked-by: Kumar Gala <galak at kernel.crashing.org>

- k