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List:       netbsd-port-i386
Subject:    Re: CDROM problems
From:       Roger Brooks <R.S.Brooks () liverpool ! ac ! uk>
Date:       1999-06-27 21:02:02
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On Thu, 17 Jun 1999, Manuel Bouyer wrote:

> On Tue, Jun 15, 1999 at 11:06:39PM +0100, Roger Brooks wrote:
> > [...]
> > Jun 14 19:33:37 tallis /netbsd: pciide0 at pci0 dev 7 function 1: VIA \
> >                 Technologies VT82C586A IDE Controller
> > Jun 14 19:33:37 tallis /netbsd: pciide0: bus-master DMA support present
> > Jun 14 19:33:37 tallis /netbsd: pciide0: primary channel configured to \
> >                 compatibility mode
> > Jun 14 19:33:37 tallis /netbsd: atapibus0 at pciide0 channel 0
> > Jun 14 19:33:37 tallis /netbsd: atapibus0 drive 1: cmdsz 0x0 drqtype 0x0
> > Jun 14 19:33:37 tallis /netbsd: cd0 at atapibus0 drive 1: <ATAPI CD-ROM DRIVE 32X \
> >                 MAXIMUM, , 322P> type 5 cdrom removable
> > Jun 14 19:33:37 tallis /netbsd: cd0: drive supports PIO mode 4, DMA mode 2, \
> >                 Ultra-DMA mode 2
> > Jun 14 19:33:37 tallis /netbsd: wd0 at pciide0 channel 0 drive 0: <FUJITSU \
> >                 MPB3043ATU E>
> > Jun 14 19:33:37 tallis /netbsd: wd0: drive supports 16-sector pio transfers, lba \
> >                 addressing
> > Jun 14 19:33:37 tallis /netbsd: wd0: 4125MB, 8940 cyl, 15 head, 63 sec, 512 \
> >                 bytes/sect x 8448300 sectors
> > Jun 14 19:33:37 tallis /netbsd: wd0: 32-bits data port
> > Jun 14 19:33:37 tallis /netbsd: wd0: drive supports PIO mode 4, DMA mode 2, \
> >                 Ultra-DMA mode 2
> > Jun 14 19:33:37 tallis /netbsd: pciide0: primary channel interrupting at irq 14
> > Jun 14 19:33:37 tallis /netbsd: pciide0: secondary channel configured to \
> >                 compatibility mode
> > Jun 14 19:33:37 tallis /netbsd: wd1 at pciide0 channel 1 drive 0: <Maxtor \
> >                 90845D4>
> > Jun 14 19:33:37 tallis /netbsd: wd1: drive supports 16-sector pio transfers, lba \
> >                 addressing
> > Jun 14 19:33:37 tallis /netbsd: wd1: 8063MB, 16383 cyl, 16 head, 63 sec, 512 \
> >                 bytes/sect x 16514064 sectors
> > Jun 14 19:33:37 tallis /netbsd: wd1: 32-bits data port
> > Jun 14 19:33:37 tallis /netbsd: wd1: drive supports PIO mode 4, DMA mode 2, \
> >                 Ultra-DMA mode 2
> > Jun 14 19:33:37 tallis /netbsd: pciide0: secondary channel interrupting at irq 15
> > Jun 14 19:33:37 tallis /netbsd: wd0(pciide0:0:0): using PIO mode 4, Ultra-DMA \
> >                 mode 2 (using DMA data transfers)
> > Jun 14 19:33:37 tallis /netbsd: cd0(pciide0:0:1): using PIO mode 4, DMA mode 2 \
> >                 (using DMA data transfers)
> > Jun 14 19:33:37 tallis /netbsd: wd1(pciide0:1:0): using PIO mode 4, Ultra-DMA \
> > mode 2 (using DMA data transfers)
> 
> Could you try to move the CD to the secondary channel ?
> Maybe it's some kind of incompatibility between the CD and your FUJITSU
> drive ...

I've now tested the following configurations:

tallis /netbsd: wd0(pciide0:0:0): using PIO mode 4, Ultra-DMA mode 2 (using DMA data \
transfers) tallis /netbsd: wd1(pciide0:1:0): using PIO mode 4, Ultra-DMA mode 2 \
(using DMA data transfers) tallis /netbsd: cd0(pciide0:1:1): using PIO mode 4, \
Ultra-DMA mode 2 (using DMA data transfers)

Hangs system when attempting to read file from CDROM.



tallis /netbsd: wd0(pciide0:0:0): using PIO mode 4, Ultra-DMA mode 2 (using DMA data \
transfers) tallis /netbsd: wd1(pciide0:1:0): using PIO mode 4, Ultra-DMA mode 2 \
(using DMA data transfers) tallis /netbsd: cd0(pciide0:1:1): using PIO mode 4, DMA \
mode 2 (using DMA data transfers)

UDMA disabled with flags in config file - works OK.



tallis /netbsd: wd0(pciide0:0:0): using PIO mode 4, Ultra-DMA mode 2 (using DMA data \
transfers) tallis /netbsd: cd0(pciide0:1:0): using PIO mode 4, Ultra-DMA mode 2 \
(using DMA data transfers) (and IDE cable to wd1 was unplugged)

This was booted from an install floppy because wd1 is my 1.4 system disk, but has no \
MBR (and the cabling wouldn't allow me to put both HDs on the primary channel without \
removing them from the disk bays...).  After booting the install floppy, I mounted \
the 1.4 install CD and dd'ed a compressed tar saveset to /dev/null.  Result: an \
immediate system hang with:

pciide0:1:0 lost interrupt
	type: atapi
	c_bcount: 2048
	c_skip: 0

System then remained locked solid.

Clearly, my CDROM drive is promising something which it then fails to deliver.  When \
I turn off the UDMA modes in the config file it appears to work perfectly.  Maybe I'm \
the only person to have met this problem?  My main concern is that someone somewhere \
tries to do an install from CD, hits the same problem and concludes that NetBSD is no \
good.  Is it possible to have a quirk table to restrict DMA modes on rogue drives \
like this?  Probably not, as the driver probe doesn't seem to produce a vendor \
string.

Once again, does anyone have this model of CDROM drive working properly in UDMA mode \
2? It's an Acer Vuego CD632A (a 32x drive, bought about a year ago).



Roger

------------------------------------------------------------------------------
Roger Brooks (Systems Programmer),          |  Email: R.S.Brooks@liv.ac.uk
Computing Services Dept,                    |  Tel:   +44 151 794 4441
The University of Liverpool,                |  Fax:   +44 151 794 4442
PO Box 147, Liverpool L69 3BX, UK           | 
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