cvs commit: src/sys/pci agp_i810.c
anholt at FreeBSD.org
Tue Sep 26 23:38:55 PDT 2006
anholt 2006-09-27 06:38:54 UTC
FreeBSD src repository
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.
Submitted by: mnag
Tested on: i945GM, i915GM
MFC after: 2 weeks
Revision Changes Path
1.39 +29 -13 src/sys/pci/agp_i810.c
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