Multiple PCI controllers

[Peter Grehan]

> I think there were not multiple-domain machines that FreeBSD ran on in 
> previous releases in general.

  Power Macs have up to 3 PCI buses, with each one having bus number 0 
at the host bridge. FreeBSD 6.* was fine with that, except if there was 
a conflict in bus/slot/function. Fortunately it looked like OpenFirmware 
was careful to avoid creating these conflicts when doing bus assignment.

later,

Peter.