| commit | 817820b0226a1376f0fc68827ab8e42d86431117 | [log] [tgz] |
|---|---|---|
| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | Wed Jun 24 15:25:31 2015 +1000 |
| committer | Michael Ellerman <mpe@ellerman.id.au> | Mon Jul 13 10:10:55 2015 +1000 |
| tree | 89abc8109d548572af812a13de798fe0d4b32349 | |
| parent | e91c25111aa373af7439d97ab0e606bcffd599ef [diff] |
powerpc/iommu: Support "hybrid" iommu/direct DMA ops for coherent_mask < dma_mask This patch adds the ability to the DMA direct ops to fallback to the IOMMU ops for coherent alloc/free if the coherent mask of the device isn't suitable for accessing the direct DMA space and the device also happens to have an active IOMMU table. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>