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| author | Milton Miller <miltonm@bga.com> | 2011-06-24 11:05:24 +0200 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2011-09-20 01:19:35 +0200 |
| commit | d24f9c6999eacd3a7bc2b289e49fcb2bf2fafef2 (patch) | |
| tree | 66276ee7149e5eab4b7ec9785bad7bdf0564ea3d /arch/powerpc/kernel/vio.c | |
| parent | dma-mapping: Add get_required_mask if arch overrides default (diff) | |
| download | linux-d24f9c6999eacd3a7bc2b289e49fcb2bf2fafef2.tar.xz linux-d24f9c6999eacd3a7bc2b289e49fcb2bf2fafef2.zip | |
powerpc: Use the newly added get_required_mask dma_map_ops hook
Now that the generic code has dma_map_ops set, instead of having a
messy ifdef & if block in the base dma_get_required_mask hook push
the computation into the dma ops.
If the ops fails to set the get_required_mask hook default to the
width of dma_addr_t.
This also corrects ibmbus ibmebus_dma_supported to require a 64
bit mask. I doubt anything is checking or setting the dma mask on
that bus.
Signed-off-by: Milton Miller <miltonm@bga.com>
Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com>
Cc: linuxppc-dev@lists.ozlabs.org
Cc: linux-kernel@vger.kernel.org
Cc: benh@kernel.crashing.org
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/kernel/vio.c')
| -rw-r--r-- | arch/powerpc/kernel/vio.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/arch/powerpc/kernel/vio.c b/arch/powerpc/kernel/vio.c index 1b695fdc362b..c0493259d133 100644 --- a/arch/powerpc/kernel/vio.c +++ b/arch/powerpc/kernel/vio.c @@ -605,6 +605,11 @@ static int vio_dma_iommu_dma_supported(struct device *dev, u64 mask) return dma_iommu_ops.dma_supported(dev, mask); } +static u64 vio_dma_get_required_mask(struct device *dev) +{ + return dma_iommu_ops.get_required_mask(dev); +} + struct dma_map_ops vio_dma_mapping_ops = { .alloc_coherent = vio_dma_iommu_alloc_coherent, .free_coherent = vio_dma_iommu_free_coherent, @@ -613,7 +618,7 @@ struct dma_map_ops vio_dma_mapping_ops = { .map_page = vio_dma_iommu_map_page, .unmap_page = vio_dma_iommu_unmap_page, .dma_supported = vio_dma_iommu_dma_supported, - + .get_required_mask = vio_dma_get_required_mask, }; /** |