From owner-freebsd-bugbusters@FreeBSD.ORG Mon May 29 05:03:47 2006 Return-Path: X-Original-To: bugbusters@freebsd.org Delivered-To: freebsd-bugbusters@FreeBSD.ORG Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id D5BD316AE52 for ; Mon, 29 May 2006 05:03:47 +0000 (UTC) (envelope-from mmcgus@yahoo.com) Received: from web52301.mail.yahoo.com (web52301.mail.yahoo.com [206.190.48.144]) by mx1.FreeBSD.org (Postfix) with SMTP id 3A45F43D72 for ; Mon, 29 May 2006 05:03:47 +0000 (GMT) (envelope-from mmcgus@yahoo.com) Received: (qmail 34976 invoked by uid 60001); 29 May 2006 05:03:46 -0000 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com; h=Message-ID:Received:Date:From:Subject:To:MIME-Version:Content-Type:Content-Transfer-Encoding; b=f0CjVEzqGwJ+VDaLrxroXI0cqTuuNlSBzoohp0KcooD9n7PXuwNtC24k/9q6WNvs5LgivdIomRImeealGlar2BlkJOwF3/ROa/fYKAa48o5Pq0u1vO7PnM5B0iO12Z3fLTiGHIiGa0OF9TaOidbjcLrCUEsf6SGwwHa2eWbashQ= ; Message-ID: <20060529050346.34974.qmail@web52301.mail.yahoo.com> Received: from [71.212.123.86] by web52301.mail.yahoo.com via HTTP; Sun, 28 May 2006 22:03:46 PDT Date: Sun, 28 May 2006 22:03:46 -0700 (PDT) From: Mike M To: bugbusters@freebsd.org MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit Cc: Subject: AGP driver misconfigures aperture size on Athlon64 with SiS 760 controller (+PATCH) X-BeenThere: freebsd-bugbusters@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "Coordination of the Problem Report handling effort." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 29 May 2006 05:03:48 -0000 Sorry about the formatting - send-pr doesn't work for me, and I couldn't see the images on the web form to submit it there... To: FreeBSD-gnats-submit@freebsd.org From: User & Reply-To: User & Cc: X-send-pr-version: 3.113 X-GNATS-Notify: >Submitter-Id: current-users >Originator: Mike M >Organization: none >Confidential: no >Synopsis: AGP driver misconfigures aperture size on Athlon64 with SiS 760 controller (+PATCH) >Severity: non-critical >Priority: low >Category: kern >Class: sw-bug >Release: FreeBSD 6.1-STABLE i386 >Environment: System: FreeBSD blunderbox.domain.actdsltmp 6.1-STABLE FreeBSD 6.1-STABLE #3: Sun May 28 20:40:21 PDT 2006 mmcg@blunderbox.domain.actdsltmp:/M/0/a/usr.obj/M/0/a/usr.src6/sys/BLUNDERBOX32 i386 Athlon 64, running FreeBSD/i386 >Description: Running FreeBSD-i386 on an Athlon 64, with a radeon 9600 video card and a SiS760 AGP bridge, using X.org 6.9; GENERIC kernel with agp, dri, and radeon dri compiled in. When starting Xorg using the system as configured above, DRM fails to initialize with the following: agp0: binding memory at bad offset 0 This causes DRM, hence DRI to fail, resulting in no acceleration for GLX under X. Somewhat frustrating, as I had purchased the radeon card to solve precisely this problem (with the built-in graphics). The reason: the AGP driver thinks that the aperture size is 4M - when, in fact, it is 64M. The aperture initialization then fails because AGP_GET_APERTURE() is returning 4M, whereas the radeon DRI driver is using the size information returned by agp_get_info() (which retrieves the size of the allocated resource directly from the resource manager, using rman_get_size(sc->as_aperture) - this may or may not be a bug). So agp_alloc_gatt() fails because it's asked to allocate 64M but only believes 4M is available. >How-To-Repeat: Use an Athlon 64 motherboard with a SiS 760 AGP bridge and (in my case) a radeon 9600 video card. Start Xorg. No DRI. >Fix: After the following patch, things magically started working (it just adds the SiS760 device ID to the agp_amd64.c handler): diff -c /usr/src/sys/pci/agp_amd64.c{.ctm,} *** /usr/src/sys/pci/agp_amd64.c.ctm Sun May 28 19:37:02 2006 --- /usr/src/sys/pci/agp_amd64.c Sun May 28 19:41:42 2006 *************** *** 97,102 **** --- 97,104 ---- return ("AMD 8151 AGP graphics tunnel"); case 0x07551039: return ("SiS 755 host to AGP bridge"); + case 0x07601039: + return ("SiS 760 host to AGP bridge"); case 0x168910b9: return ("ULi M1689 AGP Controller"); case 0x00d110de: glxgears went from 90fps to 1200fps. WARNING: I do not know how (or whether) this will affect non-athlon64s. __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com