On Fri, 12 Mar 2010 20:12:39 +0100 Albert Herranz <albert_herranz@xxxxxxxx> wrote: > The current SWIOTLB code does not support NOT_COHERENT_CACHE platforms. > This patch adds support for NOT_COHERENT_CACHE platforms to SWIOTLB by > adding two platform specific functions swiotlb_dma_sync_page() and > swiotlb_dma_sync() which can be used to explicitly manage cache coherency. > > On PowerPC these functions are mapped to their corresponding > __dma_sync_page() and __dma_sync() functions. > On other architectures using SWIOTLB these functions are optimized out. > > This will be used later to support SWIOTLB on the Nintendo Wii video game > console. > > CC: linuxppc-dev@xxxxxxxxxxxxxxxx > CC: linux-kernel@xxxxxxxxxxxxxxx > CC: x86@xxxxxxxxxx > CC: linux-ia64@xxxxxxxxxxxxxxx > Signed-off-by: Albert Herranz <albert_herranz@xxxxxxxx> > --- > arch/ia64/include/asm/swiotlb.h | 10 ++++++++++ > arch/powerpc/include/asm/swiotlb.h | 3 +++ > arch/x86/include/asm/swiotlb.h | 10 ++++++++++ > lib/swiotlb.c | 30 ++++++++++++++++++++++++------ > 4 files changed, 47 insertions(+), 6 deletions(-) Why can't you use dma_sync_single_* instead of inventing new swiotlb sync functions? -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
