pci_attach_args *" instead of from four separate parameters which in
all cases were extracted from the same "struct pci_attach_args".
This both simplifies the driver api, and allows for alternate PCI
interrupt mapping schemes, such as one using the tables described in
the Intel Multiprocessor Spec which describe interrupt wirings for
devices behind pci-pci bridges based on the device's location rather
the bridge's location.
Tested on alpha and i386; welcome to 1.5Q
this could result in garbage being written to the PCI status register,
which is unlikely to have had a serious effect. This was with us from
an #if 0 added in rev 1.6.
Address kern/9370, kern/9548, kern/9571, and kern/9573.
Save and restore critical PCI configuration registers because they are
sometimes bashed.
Add a powerhook to restore said PCI registers after APM events.
The fxp now works across a warm boot from windows (vaio).
The fxp now works across an apm suspend/resume or hibernate/resume cycle.
