cvs commit: src/sys/pci agp_i810.c
joel at FreeBSD.org
Thu Sep 28 00:22:48 PDT 2006
On Thu, 2006-09-28 at 08:12 +0200, Joel Dahl wrote:
> On Wed, 2006-09-27 at 06:38 +0000, Eric Anholt wrote:
> > anholt 2006-09-27 06:38:54 UTC
> > FreeBSD src repository
> > Modified files:
> > sys/pci agp_i810.c
> > Log:
> > Add support for 945G/GM AGP chipsets.
> > The key problem was that the aperture size detection using the MSAC bit
> > doesn't work -- the bit appears to be set even when it shouldn't be. Linux
> > takes a different approach, testing for a bit of the GMADR (PCIR_BAR(2)) being
> > set. However, as I don't think that's a safe way to test aperture size, we
> > just allocate the resource and check its size. This also pointed out that
> > agp_generic_attach hadn't been allocating our aperture resource, which may
> > have caused problems in some cases.
> > Also corrected is a minor copy-and-pasteo in an error case.
> Hmm, I have a HP NX7400 laptop with an Intel i945 chipset, and it's
> running a very fresh current (GENERIC, no changes made whatsoever).
> However, I see the following in my dmesg when I start X (I *think* it
> started appearing just after your commit to agp_i810.c):
Ok, I can confirm that reverting back to revision 1.38 of agp_i810.c
fixes the problem.
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