Manuel wrote (quoting Frederic):
| > They are called in nearly all pci drivers, and are defined in each Port
| > that uses a pci Bus.
| > 
| > I guess they are related to the PCI bus configuration cycles, but I'm
| > not even sure.
| > 
| > If anyone could tell  me what one or both of these functions do, it
| > would be a great help.
| 
| Well, they're just used to read or write the registers in the PCI
| configuration space of each device.

Is that the best description we can manage? We should have a section
9 manapge for it (hint: if a user asks and an answer comes over the
mailing list, that's grounds for a manpage if the question was
about a ernel function). I'm a little reluctant to just put the above
text in such a manpage, but it's better than nothing.

--jhawk