Date: Tue, 20 Sep 2005 15:08:15 -0400 From: John Baldwin <jhb@FreeBSD.org> To: Nate Lawson <nate@root.org> Cc: cvs-src@FreeBSD.org, Mike Silbersack <silby@silby.com>, eta@lclark.edu, cvs-all@FreeBSD.org, src-committers@FreeBSD.org Subject: Re: cvs commit: src/sys/conf files.i386 src/sys/pci agp_ati.c agpreg.h src/sys/modules/agp Makefile Message-ID: <200509201508.17596.jhb@FreeBSD.org> In-Reply-To: <432C801E.2090904@root.org> References: <200509170336.j8H3alVZ083992@repoman.freebsd.org> <1126984598.45786.29.camel@leguin> <432C801E.2090904@root.org>
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On Saturday 17 September 2005 04:44 pm, Nate Lawson wrote: > Eric Anholt wrote: > > On Sat, 2005-09-17 at 12:04 -0700, Nate Lawson wrote: > >>Mike Silbersack wrote: > >>>I think I asked in irc a while ago, but I can't recall the answer. > >>> > >>>I don't seem to have agp support on my laptop, which has: > >>> > >>>(--) PCI:*(0:2:0) Intel Corporation 82852/855GM Integrated Graphics > >>>Device rev 2, Mem @ 0xe8000000/27, > >>>0xe0000000/19, I/O @ 0x1800/3 > >>>(--) PCI: (0:2:1) Intel Corporation 82852/855GM Integrated Graphics > >>>Device rev 2, Mem @ 0xf0000000/27, > >>>0xe0080000/19 > >>> > >>>According to Xorg. Was there something odd about the chipset, or is it > >>>just a matter of adding device IDs? This is with RELENG_6. > >> > >>855GM and GMS are supported by the latest beta Xorg. So you just need > >>to update your Xorg-server port. > > > > We clarified in private mail that the agp device isn't attaching. I > > think acpi_video is beating it out, confirming that we really need to be > > able to somehow share devices well for video. That's 3 drivers now > > (agp, drm, and acpi_video) that would all like to play. > > Ah. Yes, I think we'll have to do something like what I did for cpu > devices. Basically, cpu0, cpu1, etc. implement a pseudo bus and > multiple drivers attach below it. Do a devinfo to see this. There is > no real way in newbus to have multiple drivers attached to a device if > it doesn't implement a bus interface. > > This will require some design thinking. Yes, a vgapci(4) driver or some such. I've started tinkering in an (old) p4 branch (jhb_agp) with moving the various agp drivers to be children of hostb(4) so that one would be able to kldload agp as a first step. -- John Baldwin <jhb@FreeBSD.org> <>< http://www.FreeBSD.org/~jhb/ "Power Users Use the Power to Serve" = http://www.FreeBSD.org
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