Date: Tue, 15 Aug 2000 16:44:31 +0200 From: Martin Nilsson <martin@svenskabutiker.se> To: freebsd-hackers@freebsd.org Subject: What is needed to support i815 in XFree86 4.01? Message-ID: <3999574E.56C5D8BA@svenskabutiker.se>
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A friend of mine have just bought a computer with i815 chipset, I want to
convert him to FreeBSD so I need to get X running om his machine with the
builtin graphics on his motherboard.
The graphics part of the i815 chipset is believed to be equal to that of
the i810. Of course the PCI id:s are different so it's not detected by
the new agp driver in 4.1-Stable.
I have the two PCI-ids 1132 and 1130 for the video controller and the
host-to-hub bridge. I have tried to add these in src/sys/pci/pcisupport.c
and src/sys/pci/agp_i810.c but I'm not getting any messages from the agp
driver that it is installed (other than the texts I added).
Can someone tell me how this detection is supposed to work and if there
are more places that must be changed to get enable the graphics controller
XFree86-4.0.1 detects the i815 GMCH so it shoud be fine.
The following function must be rewritten as the id:s are now off by two:
/*
* Find bridge device.
*/
static device_t
agp_i810_find_bridge(device_t dev)
{
device_t *children, child;
int nchildren, i;
u_int32_t devid;
/*
* XXX assume that the bridge device's ID is one minus the vga ID.
*/
devid = pci_get_devid(dev) - 0x10000;
if (device_get_children(device_get_parent(dev), &children, &nchildren))
return 0;
for (i = 0; i < nchildren; i++) {
child = children[i];
if (pci_get_devid(child) == devid) {
free(children, M_TEMP);
return child;
}
}
free(children, M_TEMP);
return 0;
}
/Martin
--
_____________________________________________________________________
| o | +---------------------------+ +---------------------------+ | o |
| | | Martin Nilsson M.Sc. CS&E | | Internet & Intranet | | |
| o | | FILEX AB, Lund SWEDEN | | Applications & shopping. | | o |
| | | email: martin@filex.se | | UNIX, TCP/IP, Perl, C/C++ | | |
| o | | Phone: +46-46-304130 | | SQL dev. & consulting | | o |
| | +---------------------------+ +---------------------------+ | |
| o | You know the old saying - Any technology sufficiently | o |
| | advanced is indistinguishable from a Perl script | |
| o | - The Camel book p.301 | o |
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