From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750730AbWDDQHv (ORCPT ); Tue, 4 Apr 2006 12:07:51 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750732AbWDDQHv (ORCPT ); Tue, 4 Apr 2006 12:07:51 -0400 Received: from moutng.kundenserver.de ([212.227.126.171]:20168 "EHLO moutng.kundenserver.de") by vger.kernel.org with ESMTP id S1750730AbWDDQHu (ORCPT ); Tue, 4 Apr 2006 12:07:50 -0400 From: To: Cc: Subject: EPIA-M: DMA & VT8235 Lock-up Date: Tue, 4 Apr 2006 18:07:57 +0200 Message-ID: <17624747.9731144160783244.JavaMail.servlet@kundenserver> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Webmail Importance: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 X-Binford: 6100 (more power) X-Originating-From: 31661542 X-Routing: DE X-Message-Id: <31661542$1144160783243172.23.4.15714433154@pustefix157.kundenserver.de-2113841273> X-Provags-ID: kundenserver.de abuse@kundenserver.de login:b77685ddbddf372e99c047856fb7fc81 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hi, I am writing to this list since I think solving this issue may have some importance also to other Linux users. Please CC me if you answer since I am not subscribed to this list! Here is the issue: I have severe lock-ups with Vias ME6000 motherboard with UDMA100 transfers. MY Hardaware: VIA EPIA ME6000 (VIA VT8235 south bridge) 512 MB DDR400 RAM (verified OK!) Technotrend DVBs 1.5 card Intel Pro 1000 desktop ethernet card (e1000) Linux Kernel 2.6.13 Bios: 1.16 hard drive Samsung HM100JC (UDMA 100 capable) I made some test copying some files back and forth on my HD When I run this in dma4 and dma5 mode my systems stops working after a while. With lower DMA modes or in PIO mode everything is fine. I tested already different 80 pin ATA cables, but the cable does not solve the problem. So the board or the drivers have a DMA issue. I am wondering if this can be fixed in the LINUX Kernel or if this is an unsolved VT8235 hardware issue. Lockups usually occur if there is also other traffic, like network traffic. Via seems to have a solution for its Windows drivers since it has been reported that with a driver update in 2005 the issue was solved. Others users report similar problems. See related thread here: http://forums.viaarena.com/messageview.aspx?catid=28&threadid=60131&STAR TPAGE=1&FTVAR_FORUMVIEWTMP=Linear Are there any suggestions if this can be fixed by modifying kernel divers? RGDS Christian