Bug 15356

Summary:	ahc driver (Adaptec 7896) cannot see 4x18GB drives (but 3 are ok)
Product:	Base System	Reporter:	Marcin Cieslak <saper>
Component:	kern	Assignee:	freebsd-bugs (Nobody) <bugs>
Status:	Closed FIXED
Severity:	Affects Only Me	CC:	saper
Priority:	Normal
Version:	4.0-CURRENT
Hardware:	Any
OS:	Any

Description Marcin Cieslak 1999-12-08 15:50:01 UTC

When all 4 drives are plugged-in, the boot process goes fine,
BIOS reports all of them (C..F). After SCSI bus reset
system aborts with no rootdev message. 
It's enough to unplug _any_ disk (despite da0 which contains the system)
and the system works fine.
Sometimes with full CAM debug enabled (all buses and targets) it works,
it happend to me that all disks showed up when booted with 3.2-Release
install floppy.

Fix: 

None :(
How-To-Repeat: 
Plug all 4 IBM 18GB drives onto one channel.

Comment 1 Justin T. Gibbs freebsd_committer

1999-12-08 16:18:56 UTC

>FreeBSD barbera.system.pl 4.0-CURRENT FreeBSD 4.0-CURRENT #1: Mon Dec  6 16:18
>:04 CET 1999     toor@barbera.system.pl:/usr/src/sys/compile/Barbera.debug  i3
>86
>
>cvsuped as above.

Can you verify that you have:

$FreeBSD: src/sys/pci/ahc_pci.c,v 1.22 1999/12/06 18:29:03 gibbs Exp $

It was designed to address a termination issue on these chips, and you
may have just missed it.

If either you already have this revision or you try the new one and it
still doesn't work, send me the output from a boot -v.

--
Justin

Comment 2 Jeroen Ruigrok van der Werven freebsd_committer

2001-10-28 19:21:31 UTC

State Changed
From-To: open->closed

Justin said this was fixed in source. 
Feedback time-out, assume it fixed the problem.