[SPARC64]: Beginnings of SUN4V PCI controller support.
Abstract out IOMMU operations so that we can have a different
set of calls on sun4v, which needs to do things through
hypervisor calls.
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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arch/sparc64/kernel/pci_sun4v.c
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