On Tue, 21 Jun 2005, Eric Anholt wrote:
On Tue, 2005-06-21 at 14:57 -0400, Vladimir Dergachev wrote:
/* Texture offset is dangerous and needs more checking */
ADD_RANGE(R300_TX_OFFSET_0, 16);
I don't think texture offsets are ever written to, however if they
point in the wrong place they can be used to read memory directly.
ideally we would check these to be either with MC_FB_LOCATION
or MC_AGP_LOCATION ranges. Problem is what do we do on PCI cards ?
use AIC controller settings ?
Just verify that the location is within expected areas of the card's
virtual address space, like you do for color/depth offsets, right?
Yes, the question is what these are for PCI cards. I guess AIC should have
a register similar to MC_AGP_LOCATION.
best
Vladimir Dergachev
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Eric Anholt [EMAIL PROTECTED]
http://people.freebsd.org/~anholt/ [EMAIL PROTECTED]
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