From owner-freebsd-hackers@FreeBSD.ORG Tue Jun 17 10:01:36 2003 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 844BF37B401 for ; Tue, 17 Jun 2003 10:01:36 -0700 (PDT) Received: from cfcl.com (cpe-24-221-172-174.ca.sprintbbd.net [24.221.172.174]) by mx1.FreeBSD.org (Postfix) with ESMTP id E954043F85 for ; Tue, 17 Jun 2003 10:01:35 -0700 (PDT) (envelope-from rdm@cfcl.com) Received: from [192.168.254.205] ([192.168.254.205]) by cfcl.com (8.12.6/8.11.1) with ESMTP id h5HH1Gj4065290 for ; Tue, 17 Jun 2003 10:01:17 -0700 (PDT) (envelope-from rdm@cfcl.com) Mime-Version: 1.0 Message-Id: X-Mailer: Eudora for Macintosh! Date: Tue, 17 Jun 2003 10:01:31 -0700 To: freebsd-hackers@freebsd.org From: Rich Morin Content-Type: text/plain; charset="us-ascii" ; format="flowed" Subject: prospects for DMA support for SiS962(L) Southbridge? X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 17 Jun 2003 17:01:36 -0000 I recently upgraded my motherboard and CPU, as: 478 pin Celeron; 2.1 GHz 512 MB DDR DIMM (2 ea.) SiS962(L) Southbridge I then found that I couldn't boot the (FreeBSD 4.7) system, getting: ad0: READ command timeout tag=0 serv=0 resetting ata0: resetting devices After a bunch of Googling and some discussions on freebsd-questions, I decided to change line 90 of /usr/src/sys/dev/ataata-disk.c to: static int ata_dma = 0; This works, but I suspect that it is slowing down my disk I/O quite a bit. So, I would like to know the prospects for this controller being supported in FreeBSD any time soon. -r P.S. I have been told that I should be able to boot from a PCI-based EIDE card, but I am not familiar with the (AMI)BIOS. If you can supply me with specific instructions, I would be MOST grateful. -- email: rdm@cfcl.com; phone: +1 650-873-7841 http://www.cfcl.com/rdm - my home page, resume, etc. http://www.cfcl.com/Meta - The FreeBSD Browser, Meta Project, etc. http://www.ptf.com/dossier - Prime Time Freeware's DOSSIER series http://www.ptf.com/tdc - Prime Time Freeware's Darwin Collection