Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S264006AbUDFUv6 (ORCPT ); Tue, 6 Apr 2004 16:51:58 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S264007AbUDFUv5 (ORCPT ); Tue, 6 Apr 2004 16:51:57 -0400 Received: from delerium.kernelslacker.org ([81.187.208.145]:5567 "EHLO delerium.codemonkey.org.uk") by vger.kernel.org with ESMTP id S264006AbUDFUvZ (ORCPT ); Tue, 6 Apr 2004 16:51:25 -0400 Date: Tue, 6 Apr 2004 21:48:43 +0100 From: Dave Jones To: "Hemmann, Volker Armin" Cc: Bjoern Michaelsen , linux-kernel@vger.kernel.org Subject: Re: AGP problem SiS 746FX Linux 2.6.5-rc3 Message-ID: <20040406204843.GC1100@redhat.com> Mail-Followup-To: Dave Jones , "Hemmann, Volker Armin" , Bjoern Michaelsen , linux-kernel@vger.kernel.org References: <20040406031949.GA8351@lord.sinclair> <200404062206.38731.volker.hemmann@heim10.tu-clausthal.de> <20040406203122.GB1100@redhat.com> <200404062237.02210.volker.hemmann@heim10.tu-clausthal.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <200404062237.02210.volker.hemmann@heim10.tu-clausthal.de> User-Agent: Mutt/1.4.1i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 974 Lines: 23 On Tue, Apr 06, 2004 at 10:37:02PM +0200, Hemmann, Volker Armin wrote: > Capabilities: [c0] AGP version 3.0 Ok, so your system is fully AGP v3 compliant, (both host and gfx card). The missing check highlighted in your diff means that we only do AGPv3 stuff if we have an AGP 3.5 host bridge. You have a 3.0 bridge, so it was falling back to AGP v2. My suspicion now is that the 648 and 746 chipsets vary too much for them to both use the generic routines, so I'll reinstate the check. It'll still report that it finds an AGP v3.0 device, but until someone comes forward with chipset docs, it looks like it'll be limited to AGP v2. (I'm amazed that it works at all, really). It survives a testgart run too ? Dave - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/