2 Commits

Author	SHA1	Message	Date
Benjamin Herrenschmidt	8b31e49d1d	powerpc: Fix up dma_alloc_coherent() on platforms without cache coherency. ... The implementation we just revived has issues, such as using a Kconfig-defined virtual address area in kernel space that nothing actually carves out (and thus will overlap whatever is there), or having some dependencies on being self contained in a single PTE page which adds unnecessary constraints on the kernel virtual address space. This fixes it by using more classic PTE accessors and automatically locating the area for consistent memory, carving an appropriate hole in the kernel virtual address space, leaving only the size of that area as a Kconfig option. It also brings some dma-mask related fixes from the ARM implementation which was almost identical initially but grew its own fixes. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>	2009-05-27 16:33:59 +10:00
Benjamin Herrenschmidt	b16e7766d6	powerpc: Move dma-noncoherent.c from arch/powerpc/lib to arch/powerpc/mm ... (pre-requisite to make the next patches more palatable) Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>	2009-05-27 16:32:05 +10:00