Date: Thu, 13 Mar 2008 15:41:58 -0700 (PDT) From: jbsnyder <jbsnyder@gmail.com> To: freebsd-x11@freebsd.org Subject: Re: i915/GART broken in CURRENT Message-ID: <16040074.post@talk.nabble.com> In-Reply-To: <1205404488.75559.23.camel@localhost> References: <FC78635D-6A46-474B-85ED-E90281990FAD@mac.com> <1205404488.75559.23.camel@localhost>
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Ah, good to know. Is it possible to use an accelerated X driver without using this support? I don't care about 3D, I just don't want to spend lots of CPU cycles on dragging windows around. I will try re-enabling that section later, and see if that works on my particular machine. Tom Evans-3 wrote: > > On Tue, 2008-03-04 at 17:53 -0800, Matthew Willis wrote: >> I am on a Intel G33 motherboard: >> http://www.intel.com/products/motherboard/DG33FB/index.htm >> >> My video chip is a GMA 3100, which is in the i915 family. > > Its close to an i915, but its more 'second cousin' than family. The > other name for this chipset is G33. > >> >> I am using the "intel" driver, and I get a "Unable to open /dev/ >> agpgart (No such file or directory)" message when I start x. >> >> In researching this problem, I noticed that there were a few other >> mentions of it on boards and mailing lists, with no solutions, leading >> me to think that GART is simply broken for my configuration. >> >> Thanks for your help! >> Matt > > > Hi Matt, its not broken, its not supported at all. The highest intel > integrated graphics supported is i965G. G31, G33 and G35 are quite > different to the i810 style chips (i8xx, i9xx). > > There is an intial implementation of support added in agp_intel.c rev > 1.40: > > revision 1.40 > date: 2007/07/13 16:28:12; author: anholt; state: Exp; lines: +306 > -224 > Add support for G965/Q965/GM965/GME965/GME945 AGP. > > This adds a function to agp.c to set the aperture resource ID if it's > not the usual AGP_APBASE. Previously, agp.c had been assuming > AGP_APBASE, which resulted in incorrect agp_info, and contortions by > agp_i810.c to work around it. > > This also adds functions to agp.c for default AGP_GET_APERTURE() and > AGP_SET_APERTURE(), which return the aperture resource size and disallow > aperture size changes. Moving to these for our AGP drivers will likely > result in stability improvements. This should fix 855-class aperture > size detection. > > Additionally, refuse to attach agp_i810 when some RAM is above 4GB and > the GART can't reference memory that high. This should be very rare. > The correct solution would be bus_dma conversion for agp, which is > beyond the scope of this change. Other AGP drivers could likely use > this change as well. > > G33/Q35/Q33 AGP support is also included, but disconnected by default > due to lack of testing. > > PR: kern/109724 (855 aperture issue) > Submitted by: FUJIMOTO Kou<fujimoto@j.dendai.ac.jp> > Approved by: re (hrs) > > > The attached patch will reconnect the AGP support, but it probably won't > work. YMMV > > Tom > > Index: sys/dev/agp/agp_i810.c > =================================================================== > RCS file: /home/ncvs/src/sys/dev/agp/agp_i810.c,v > retrieving revision 1.44 > diff -u -r1.44 agp_i810.c > --- sys/dev/agp/agp_i810.c 26 Nov 2007 18:17:07 -0000 1.44 > +++ sys/dev/agp/agp_i810.c 13 Mar 2008 10:26:30 -0000 > @@ -156,14 +156,12 @@ > "Intel Q965 SVGA controller"}, > {0x29a28086, CHIP_I965, 0x00020000, > "Intel G965 SVGA controller"}, > -/* > {0x29b28086, CHIP_G33, 0x00020000, > "Intel Q35 SVGA controller"}, > {0x29c28086, CHIP_G33, 0x00020000, > "Intel G33 SVGA controller"}, > {0x29d28086, CHIP_G33, 0x00020000, > "Intel Q33 SVGA controller"}, > -*/ > {0x2a028086, CHIP_I965, 0x00020000, > "Intel GM965 SVGA controller"}, > {0x2a128086, CHIP_I965, 0x00020000, > > > > -- View this message in context: http://www.nabble.com/i915-GART-broken-in-CURRENT-tp15841516p16040074.html Sent from the freebsd-x11 mailing list archive at Nabble.com.
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