My PC has built-in intel G33 graphics, which I'm trying to get to work
in something better then vesa.
Following the instructions in
http://lists.freebsd.org/pipermail/freebsd-stable/2008-January/039638.html
I have compiled and installed the driver and kernel modules from the git
trees for drm and the xf86-video-intel driver from today.
I also patched agp_i810.c to remove the comments from the chipset
identifiers and rebuilt the kernel.
After loading the i915.ko kernel module, and starting X with a config
file using the intel driver, I still get;
(II) intel(0): xf86BindGARTMemory: bind key 1 at 0x006ff000 (pgoffset 1791)
(WW) intel(0): xf86BindGARTMemory: binding of gart memory with key 1
at offset 0x6ff000 failed (Invalid argument)
Fatal server error:
Couldn't bind memory for front buffer
In dmesg output I see:
agp0: trying to bind into stolen memory
Looking at the Xorg.0.log, the xf86-video-intel driver and the drm and
dri drivers seem to initialize OK.
Grepping through the source, this error seems to originate in
/usr/src/sys/pci/agp_i810.c;
if ( sc->chiptype != CHIP_I810 ) {
if ( (offset >> AGP_PAGE_SHIFT) < sc->stolen ) {
device_printf(dev, "trying to bind into stolen
memory");
return EINVAL;
}
[disclaimer: I'm not a software engineer by education or trade, just a
mechanical engineer who likes to tinker with computers and software]
I've been reading the agp code, the intel driver code and I've skimmed
the intel docs. I find the code quite hard to understand, and the intel
docs nigh-on unreadable.
Would modifying the if-statement to not produce this error on the
CHIP_G33 fix this problem? Or would it horribly blow up in my face?
Any help to get this to work would be very much appreciated!
Roland
--
R.F.Smith http://www.xs4all.nl/~rsmith/
[plain text _non-HTML_ PGP/GnuPG encrypted/signed email much appreciated]
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