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 <bec...@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 <ga...@kernel.crashing.org>
- k
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