This is patch 2 of 4 of my CompactPCI hotplug core and
drivers, consisting of the CompactPCI hotplug driver core.

It is basically a glue layer on top of the PCI hotplug core that exposes
an API roughly similiar in concept to the API implemented by MontaVista
from the PICMG 2.12 specification, minus all the Win32isms and cruft.