PCI Subsystem Rework for X.org 7.1 Proposal
Alan.Coopersmith at Sun.COM
Fri Feb 3 20:49:55 PST 2006
Jesse Barnes wrote:
> Ugg... I think that gets ugly fast, since then the semantics of the
> various calls may be different depending on the bus your device is on.
> OTOH, having two separate drivers for the same chip whose only
> difference is the bus type is pretty painful too. Anyway, what bus
> types do we care about?
> o ISA? (I definitely don't care about this one, and if we did it could
> probably just have its own API)
> o PCI
> o AGP
> o PCIe
> o sbus?
> o MCA?
For SPARCs, UPA (found in UltraSPARC machines ranging from the Ultra 1
in 1995 to the SunBlade 2000 in 2002) is probably slightly more interesting
than sbus (found in SPARC & UltraSPARC machines from the SPARC 1 in 1988
to the Ultra 2 in 1996). The suncg6 driver would be sbus, sunffb UPA.
Sun will probably never put any official effort into supporting cards for
either of those buses with Xorg though - all the SPARC cards being planned
for Xorg support are PCI or PCI-E.
-Alan Coopersmith- alan.coopersmith at sun.com
Sun Microsystems, Inc. - X Window System Engineering
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