tree 600484291d9cfa68d54dc9b230f5bd115f495213
parent c7f439b99efbea74c70a5531f92566db5a6731f2
author David S. Miller <davem@sunset.davemloft.net> 1185601154 -0700
committer David S. Miller <davem@sunset.davemloft.net> 1185780454 -0700

[SPARC64]: Fix conflicts in SBUS/PCI/EBUS/ISA DMA handling.

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 <davem@davemloft.net>