Added MSI/MSI-X and interrupt_distribute(9) support for powerpc.

branches: 1.9.30; 1.9.34;
#include <sys/bus.h> instead of <machine/bus.h>.

Modify mapiodev to take a third argument indicating whether the space
should be prefetchable (true) or not (false).

Add support pci_intr_setattr.
Export non-inline version of pci api for modules (_MODULE is defined).
Fix definition of pc_conf_hook and pc_conf_interrupt.
Switch to using inlines instead of macros.
Switch ibm4xx to use <powerpc/pci_machdep.h>

Change definition of pc_bus_maxdevs to get a void * instead a pci_chipset_tag_t
to match its use in pci_bus_maxdevs. This makes it the same as pci_conf_read
and pci_conf_write.
Change all struct device * to device_t.
[Obviously nothing ever used the first argument to pc_bus_maxdevs since it
could have never worked because it wasn't being passed a pci_chipset_tag_t.]

branches: 1.5.18; 1.5.22;
Fix $NetBSD$ tag.

Automatically detect the amount of installed RAM by reading the memory
bank registers from the PCI host bridge. Previously the RAM size was
hardcoded to 64MB.

Also fill out ibm82660reg.h with more definitions from the PowerPC to
PCI Bridge and Memory Controller User's Manual.

Many thanks to Tim Rightnour for helping with this patch.

branches: 1.3.16; 1.3.18; 1.3.20; 1.3.22; 1.3.24;
Merge the ppcoea-renovation branch to HEAD.

This branch was a major cleanup and rototill of many of the various OEA
cpu based PPC ports that focused on sharing as much code as possible
between the various ports to eliminate near-identical copies of files in
every tree. Additionally there is a new PIC system that unifies the
interface to interrupt code for all different OEA ppc arches. The work
for this branch was done by a variety of people, too long to list here.

TODO:
bebox still needs work to complete the transition to -renovation.
ofppc still needs a bunch of work, which I will be looking at.
ev64260 still needs to be renovated
amigappc was not attempted.

NOTES:
pmppc was removed as an arch, and moved to a evbppc target.

branches: 1.2.24; 1.2.32; 1.2.42; 1.2.44; 1.2.46; 1.2.48;
PCI_NETBSD_CONFIGURE should allocate (but not map) address space expansion
ROMS by default. Full discussion at
http://mail-index.netbsd.org/tech-kern/2005/12/16/0023.html
Closes PR kern/32467
Reviewed by briggs@

branches: 1.1.4; 1.1.18; 1.1.30; 1.1.32; 1.1.34;
Add IBM Network Station 1000 port. From John Gordon and updated by me.