device drivers

[jason]

    I hope this is the right list, I have a nforce 2 board and have 
drivers that aren't working.  I read the nforce was based ond the amd 
chipset so I tried to use /sys/pci/agp_amd.c as a blueprint and modified 
it according to the data in /src/pci/agp_nvidia.c.  I am maybe half done 
and learned enough to know not to expect this thing to work.  I would 
like some more documentation and help if aviliable.  I read the 
developers and architecure handbooka and a few examples on the web. 
    I know enough to be dangerous, I have been told.  I would like to 
write a driver that comforms to all the new standards like newbus(does 
this apply for agp?), avoiding GAINT(I need more info on this),smp(since 
nvidia likes a universal driver architecure this would be helpfull for 
the nforce 3 and opteron), etc...  I have been getting some tech support 
from Mathew Dodd on the questions lets where I was just tring to get 3d 
working with a non-nvidia card.  It seems I am the only one with a nf2 
mobo and and ati video card who wants to do some gaming and can't.  He 
added agp_nvidia.c to freebsd and I think ether he gave up on me, or the 
driver does not work and he gave up on it.  So I am back to tring to 
write a driver myself.
    I emailed nvidia a couple of times for documentation and the only 
response I ever got was an automated conformation.  Big help they were, 
but if any else here has their ear maybe they could inquire?
Thanks,
Jason