From owner-freebsd-current@FreeBSD.ORG Tue Jun 17 14:24:55 2003 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id B882737B401 for ; Tue, 17 Jun 2003 14:24:55 -0700 (PDT) Received: from amonsul.esperi.net (amonsul.esperi.net [194.216.214.15]) by mx1.FreeBSD.org (Postfix) with ESMTP id DF1DD43FBD for ; Tue, 17 Jun 2003 14:24:54 -0700 (PDT) (envelope-from nicolai@esperi.org) Received: from nicolai by amonsul.esperi.net with local (Exim 4.20) id 19SNwj-000JSR-7Y for freebsd-current@freebsd.org; Tue, 17 Jun 2003 22:24:53 +0100 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-ID: <16111.34597.145917.481769@amonsul.esperi.net> Date: Tue, 17 Jun 2003 22:24:53 +0100 From: Nicolai E M Plum To: freebsd-current@freebsd.org X-Mailer: VM 7.07 under Emacs 21.3.1 Sender: Nicolai E M Plum Subject: ATA DMA broken/kernel panic with 5.1-R/5.1-C and VIA 82C586B X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 17 Jun 2003 21:24:56 -0000 Hi I installed 5.1-RELEASE from the CD images, and have problems using DMA on my ATA discs. I get the same problem on several discs, both several years old and brand new, across several vendors. 4.6-RELEASE handles the discs fine. Relevant excepts from the boot messages are below, the entire thing can be seen at http://www.esperi.org/nicolai/misc/dmesg.eriador FreeBSD 5.1-RELEASE #0: Thu Jun 5 02:55:42 GMT 2003 root@wv1u.btc.adaptec.com:/usr/obj/usr/src/sys/GENERIC ... atapci0: port 0xfcd0-0xfcdf mem 0xfbffe000-0xfbffffff at device 7.1 on pci0 ata0: at 0x1f0 irq 14 on atapci0 ata1: at 0x170 irq 15 on atapci0 ... Timecounters tick every 10.000 msec ad0: 114473MB [232581/16/63] at ata0-master UDMA33 ad0: READ command timeout tag=0 serv=0 - resetting ata0: resetting devices .. done ... [ this repeats ] ad1: trying fallback to PIO mode ata0: resetting devices .. done Mounting root from ufs:/dev/ad0s1a I noticed some ATA problems solved in -current recently, so I tried compiling a kernel from sources about 2 days ago. Booting from that (GENERIC) kernel, I do not get "Mounting root..", instead I get (approximately, can't cut/paste that console): Fatal trap 12: page fault while in kernel mode fault virtual address = 0xdeadc0de fault code = supervisor read, page not present instruction pointer = 0x8:0xdeadcode stack pointer = 0x10:0xc736bc38 frame pointer = 0x19:0xc736bc50 .... current process = 21 (irc14: ata0) kernel: type 12 trap, code=0 Is this a known problem, perhaps specific to the 82C586B ATA controller? Thanks Nicolai