A-Team_Digital_Solutions/android_kernel_motorola_sm6375
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[SPARC64]: Fix conflicts in SBUS/PCI/EBUS/ISA DMA handling.

Browse source 
Fully unify all of the DMA ops so that subordinate bus types to
the DMA operation providers (such as ebus, isa, of_device) can
work transparently.

Basically, we just make sure that for every system device we
create, the dev->archdata 'iommu' and 'stc' fields are filled
in.

Then we have two platform variants of the DMA ops, one for SUN4U which
actually programs the real hardware, and one for SUN4V which makes
hypervisor calls.

This also fixes the crashes in parport_pc on sparc64, reported by
Meelis Roos.

Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
David S. Miller 2007-07-27 22:39:14 -07:00
commit ad7ad57c61
18 changed files with 620 additions and 1224 deletions
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9
drivers/sbus/sbus.c
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@ -210,6 +210,10 @@ static void __init walk_children(struct device_node *dp, struct sbus_dev *parent
sdev->bus = sbus;
sdev->parent = parent;
sdev->ofdev.dev.archdata.iommu =
sbus->ofdev.dev.archdata.iommu;
sdev->ofdev.dev.archdata.stc =
sbus->ofdev.dev.archdata.stc;
fill_sbus_device(dp, sdev);
@ -269,6 +273,11 @@ static void __init build_one_sbus(struct device_node *dp, int num_sbus)
sdev->bus = sbus;
sdev->parent = NULL;
sdev->ofdev.dev.archdata.iommu =
sbus->ofdev.dev.archdata.iommu;
sdev->ofdev.dev.archdata.stc =
sbus->ofdev.dev.archdata.stc;
fill_sbus_device(dev_dp, sdev);
walk_children(dev_dp, sdev, sbus);