From owner-freebsd-current  Wed Jul 30 06:23:02 1997
Return-Path: <owner-freebsd-current>
Received: (from root@localhost)
          by hub.freebsd.org (8.8.5/8.8.5) id GAA29898
          for current-outgoing; Wed, 30 Jul 1997 06:23:02 -0700 (PDT)
Received: from genesis.atrad.adelaide.edu.au (genesis.atrad.adelaide.edu.au [129.127.96.120])
          by hub.freebsd.org (8.8.5/8.8.5) with ESMTP id GAA29882
          for <current@FreeBSD.ORG>; Wed, 30 Jul 1997 06:22:55 -0700 (PDT)
Received: (from msmith@localhost) by genesis.atrad.adelaide.edu.au (8.8.5/8.7.3) id WAA22357; Wed, 30 Jul 1997 22:51:06 +0930 (CST)
From: Michael Smith <msmith@atrad.adelaide.edu.au>
Message-Id: <199707301321.WAA22357@genesis.atrad.adelaide.edu.au>
Subject: Re: code talks:  announcing EIDE bus master patches
In-Reply-To: <5rncuo$sp8@news.itfs.nsk.su> from "nnd@itfs.nsk.su" at "Jul 30, 97 12:44:08 pm"
To: nnd@itfs.nsk.su
Date: Wed, 30 Jul 1997 22:51:05 +0930 (CST)
Cc: current@FreeBSD.ORG
X-Mailer: ELM [version 2.4ME+ PL28 (25)]
MIME-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7bit
Sender: owner-freebsd-current@FreeBSD.ORG
X-Loop: FreeBSD.org
Precedence: bulk

nnd@itfs.nsk.su stands accused of saying:

> And the next one - when I try to set flags on wcd0 to '0xa0ffa0ff'
> the system can't start - I receive:
> panic - can not mount root (?) message.
> 	Is there any possibility to avoid this panic and
> fall back to PIO-mode ?

We would need the 'wd*' section of the boot probe to have any chance
of answering that.  It's also possible that you're the first SMP user 
to have tried this (?).

> 	N.Dudorov
> 
> -------------------------------------------------------------------
> Copyright (c) 1992-1997 FreeBSD Inc.
> Copyright (c) 1982, 1986, 1989, 1991, 1993
> 	The Regents of the University of California. All rights reserved.
> FreeBSD 3.0-CURRENT #0: Wed Jul 30 18:13:59 NSS 1997
>     nnd@nnd.itfs.nsk.su:/arch/3.0/src/sys/compile/SMP-NND
> CPU: Pentium (586-class CPU)
>   Origin = "GenuineIntel"  Id = 0x52c  Stepping=12
>   Features=0x3bf<FPU,VME,DE,PSE,TSC,MSR,MCE,CX8,APIC>
> real memory  = 67108864 (65536K bytes)
> avail memory = 63660032 (62168K bytes)
> FreeBSD/SMP: Multiprocessor motherboard
>  cpu0 (BSP): apic id:  0, version: 0x00030010, at 0xfee00000
>  cpu1 (AP):  apic id:  1, version: 0x00030010, at 0xfee00000
>  io0 (APIC): apic id:  2, version: 0x00170011, at 0xfec00000
> Probing for devices on PCI bus 0:
> chip0: <Intel 82439> rev 0x01 on pci0.0.0
> chip1: <Intel 82371SB PCI to ISA bridge> rev 0x01 on pci0.7.0
> ide_pci0: <Intel PIIX3 Bus-master IDE controller> rev 0x00 on pci0.7.1
> ide_pci: warning, ide0:0 not configured for DMA?
> ide_pci: warning, ide0:1 not configured for DMA?
> ide_pci: warning, ide1:0 not configured for DMA?
> ide_pci: warning, ide1:1 not configured for DMA?
> ......
> 


-- 
]] Mike Smith, Software Engineer        msmith@gsoft.com.au             [[
]] Genesis Software                     genesis@gsoft.com.au            [[
]] High-speed data acquisition and      (GSM mobile)     0411-222-496   [[
]] realtime instrument control.         (ph)          +61-8-8267-3493   [[
]] Unix hardware collector.             "Where are your PEZ?" The Tick  [[