[Xorg-driver-geode] GeodeLX freeze with General Software BIOS saga continues
Bart Trojanowski
bart at symbio-technologies.com
Fri Jan 11 06:36:42 PST 2008
* Alan Cox <alan at lxorguk.ukuu.org.uk> [080111 09:02]:
> > Can someone tell me why we don't access 0xCF8-0xCFF directly but emulate
> > them by a read them from PCI memory?
>
> The PCI configuration interface is managed by the OS. It uses 0xCF8-0xCFF
> and also newer interfaces internally. If you scribble on those ports
> directly as well they may clash and that can do really evilly bad 'where
> did my data go' kind of things.
Thank makes sense.
> The emulation logic should dig the correct information out of the /proc
> interface (or similar for other platforms). The full information is there
> so it may be a bug in the logic for parsing that.
Thanks Alan.
I guess I'll peal off more layers and see why I get the unexpected
value back.
-Bart
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