From owner-freebsd-questions  Sat Apr 29 10:16:11 2000
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From: Hal Peterson <hrp@alum.mit.edu>
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Date: Sat, 29 Apr 2000 12:14:37 -0500 (CDT)
To: FreeBSD-questions@FreeBSD.ORG
Subject: Configuring acd0 on wdc1 without wd?
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I'm running FreeBSD 3.4-RELEASE on a Dell Dimension XPS R400.  I have
two IDE disks on the first controller, and a CD-ROM and tape drive on
the second, so:

    wdc0
	wd0 (MS-DOS)
	wd1 (FreeBSD)
    wdc1
	acd0
	wst0

Everything works fine with the GENERIC configuration:

	# IDE controller and disks
	options		"CMD640"	# work around CMD640 chip deficiency
	controller	wdc0	at isa? port "IO_WD1" bio irq 14
	disk		wd0	at wdc0 drive 0
	disk		wd1	at wdc0 drive 1

	controller	wdc1	at isa? port "IO_WD2" bio irq 15
	disk		wd2	at wdc1 drive 0
	disk		wd3	at wdc1 drive 1

	# ATAPI devices
	options		ATAPI		#Enable ATAPI support for IDE bus
	options		ATAPI_STATIC	#Don't do it as an LKM
	device		acd0		#IDE CD-ROM
	device		wfd0		#IDE Floppy (e.g. LS-120)
	device		wst0		#IDE tape // added by hrp

Except I don't have disks (wd2, wd3) on the second controller.
FreeBSD takes a long time to boot while it probes for those disks, so
I tried to remove them; but now I can't get to the CD-ROM.  Here's
what happens when I try to "mount /cdrom":

	Apr 29 11:20:24 melchett /kernel: atapi1.0: controller not ready for cmd
	Apr 29 11:20:24 melchett /kernel: atapi1:0: ERROR 2, status=0, error=0
	Apr 29 11:20:24 melchett /kernel: acd0: read_toc failed

The former two messages appear seven times, the latter one appears
twice.  The whole process takes nearly a minute, and the machine is
frozen during that time.

It all gets better when I put back wd2 and wd3.

So my question is, how can I convince the atapi driver to talk to my
CD-ROM without having the bogus drives configured?

TiA.

--
Hal Peterson                                Bloomington, MN, USA


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