On Sun, 2005-06-05 at 14:45 -0400, Vladimir Dergachev wrote: > >> Yes, however it is convenient to do so. > >> > >> The point is that AGP base address will not normally overlap the location > >> of system RAM. This is, of course, only reasonable for 32 bit systems.. > > > > I understand that part, but it's not what I meant. What I mean is this: You > > said, RADEON_MC_AGP_LOCATION is used to program where AGP is in the card's > > address space, and that's all fine and makes sense. > > > > However, we are *also* programming dev->agp->base into a register called > > RADEON_AGP_BASE. What is the meaning of that register? > > AFAIK this offset is used by PCI GART. When PCI GART is on this offset > specifies location of "AGP-like" space.
No, it's the address of the AGP aperture on the _bus_, (the value you were talking about earlier) though it's sometimes just 0. Ben. ------------------------------------------------------- This SF.Net email is sponsored by: NEC IT Guy Games. How far can you shotput a projector? How fast can you ride your desk chair down the office luge track? If you want to score the big prize, get to know the little guy. Play to win an NEC 61" plasma display: http://www.necitguy.com/?r=20 -- _______________________________________________ Dri-devel mailing list Dri-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/dri-devel
