> >That's the problem, it doesn't work on AGP. outb works but inb segfaults. > >The syscall should only return an iobase for known working busses IMHO. At the >very least, it shouldn't return any for busses known not to work. >
That's the case. I mean it should know all busses and does support all 3 uninorth busses. Is it called properly for the AGP bus (bus 0) by XFree ? My understanding was that XFree could only handle 1 IO base and so was calling it only for the external PCI bus so that it can work with PCI-based cards. The fact that outb seem to work and inb gives an error is normal, write transactions rarely give an error as they are "posted" (buffered & delayed) by the host bridge. That doesn't mean that your outb actually ended up to the card. Ben.
