From: Becky Bruce Date: Fri, 12 Sep 2008 10:34:46 +0000 (+0000) Subject: powerpc: Merge 32 and 64-bit dma code X-Git-Tag: v2.6.28-rc1~569^2~48^2~1 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4fc665b88a79a45bae8bbf3a05563c27c7337c3d;p=pandora-kernel.git powerpc: Merge 32 and 64-bit dma code We essentially adopt the 64-bit dma code, with some changes to support 32-bit systems, including HIGHMEM. dma functions on 32-bit are now invoked via accessor functions which call the correct op for a device based on archdata dma_ops. If there is no archdata dma_ops, this defaults to dma_direct_ops. In addition, the dma_map/unmap_page functions are added to dma_ops because we can't just fall back on map/unmap_single when HIGHMEM is enabled. In the case of dma_direct_*, we stop using map/unmap_single and just use the page version - this saves a lot of ugly ifdeffing. We leave map/unmap_single in the dma_ops definition, though, because they are needed by the iommu code, which does not implement map/unmap_page. Ideally, going forward, we will completely eliminate map/unmap_single and just have map/unmap_page, if it's workable for 64-bit. Signed-off-by: Becky Bruce Signed-off-by: Kumar Gala --- Reading git-diff-tree failed