is PCITAG big enough for future expansion?

[Jesse Barnes]

On Wednesday, July 20, 2005 9:59 am, Dave Airlie wrote:
> I'm not fully up on the PCI spec, but what are the defined sizes for
> the
>
> domain, bus, device and function
>
> can these become larger than 255? we munge them all into an unsigned
> long PCITAG is it big enough for future expansion.. I think the
> PCITAG thing is a bit of an ugly hack, its not as if passing a
> pointer to a PciBusId instead of the unsigned long is really going to
> make a huge performance difference to the X server...

I like that idea, I was just checking how you had modified the mapping 
routines to see how we should update the in/out routines.  I'll go with 
PciBusId * I guess.

Jesse