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powerpc/vio: Use dma ops helpers 

Use the set_dma_ops helper. Instead of modifying vio_dma_mapping_ops,
just create a trivial wrapper for dma_supported.

Signed-off-by: Milton Miller <miltonm@bga.com>
Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Nishanth Aravamudan 2010-10-18 07:26:59 +00:00 committed by Benjamin Herrenschmidt
parent 72b962d3bb
commit 6d283d782f
1 changed files with 8 additions and 3 deletions
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11
arch/powerpc/kernel/vio.c
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@ -600,6 +600,11 @@ static void vio_dma_iommu_unmap_sg(struct device *dev,
vio_cmo_dealloc(viodev, alloc_size);
}
static int vio_dma_iommu_dma_supported(struct device *dev, u64 mask)
{
return dma_iommu_ops.dma_supported(dev, mask);
}
struct dma_map_ops vio_dma_mapping_ops = {
.alloc_coherent = vio_dma_iommu_alloc_coherent,
.free_coherent = vio_dma_iommu_free_coherent,
@ -607,6 +612,7 @@ struct dma_map_ops vio_dma_mapping_ops = {
.unmap_sg = vio_dma_iommu_unmap_sg,
.map_page = vio_dma_iommu_map_page,
.unmap_page = vio_dma_iommu_unmap_page,
.dma_supported = vio_dma_iommu_dma_supported,
};
@ -858,8 +864,7 @@ static void vio_cmo_bus_remove(struct vio_dev *viodev)
static void vio_cmo_set_dma_ops(struct vio_dev *viodev)
{
vio_dma_mapping_ops.dma_supported = dma_iommu_ops.dma_supported;
viodev->dev.archdata.dma_ops = &vio_dma_mapping_ops;
set_dma_ops(&viodev->dev, &vio_dma_mapping_ops);
}
/**
@ -1244,7 +1249,7 @@ struct vio_dev *vio_register_device_node(struct device_node *of_node)
if (firmware_has_feature(FW_FEATURE_CMO))
vio_cmo_set_dma_ops(viodev);
else
viodev->dev.archdata.dma_ops = &dma_iommu_ops;
set_dma_ops(&viodev->dev, &dma_iommu_ops);
set_iommu_table_base(&viodev->dev, vio_build_iommu_table(viodev));
set_dev_node(&viodev->dev, of_node_to_nid(of_node));