*BSD News Article 35912


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From: mikebo@MCS.COM (Michael Borowiec)
Newsgroups: comp.os.386bsd.bugs
Subject: FreeBSD 1.1.5.1: AHA1542 problem - controller hangs using Exabyte
Date: 17 Sep 1994 17:30:49 -0500
Organization: MCSnet, Chicago Area Public Internet Access
Lines: 70
Message-ID: <35fqmp$nrj@Venus.mcs.com>
NNTP-Posting-Host: venus.mcs.com

I have a 486DX50 EISA/VLB system board w/16MB RAM & 256K cache.
Unfortunately I am running an AHA1542B. It is driving three disks,
an Archive Viper QIC150 and an Exabyte EXB-8200 (rev 4.25).

The problem shows up when I'm trying to copy anything from the
Exabyte to one of the hard disks. It copies a few megabytes, and
then everything goes to hell in a handbasket:

sd2(aha0:3:0): timed out
adapter not taking commands.. frozen?!
Debugger("aha1542") called.
aha0: MBO not free
.
.

and so on, and so on, and so on...
the machine is effectively hung, but the kernel never panics
and there isn't any way to recover except to hit the reset button.
I've been using the same configuration for several months with
nary a hiccup... until I added the Exabyte and tried to copy some
stuff to my disk.

Thanks for any input!
dmesg output follows.
- Mike

FreeBSD 1.1.5.1(RELEASE) (TIMESINK) #4: Mon Sep 12 22:12:15 CDT 1994
  kroot@timesink.ttl.com:/sys/compile/TIMESINK
CPU: i486DX (486-class CPU)
real memory  = 16384000 (4000 pages)
avail memory = 15269888 (3728 pages)
using 348 buffers containing 2854912 bytes of memory
Probing for devices on the ISA bus:
sc0 at 0x60-0x6f irq 1 on motherboard
sc0: VGA color <4 virtual consoles>
sio0 at 0x3f8-0x3ff irq 4 on isa
sio0: type 16550A
mse0 at 0x23c irq 3 on isa
lpt0 at 0x378-0x37f irq 7 on isa
lpt0: Interrupt-driven port
fdc0 at 0x3f0-0x3f7 irq 6 drq 2 on isa
fdc0: [0: fd0: 1.44MB 3.5in] [1: fd1: 1.2MB 5.25in]
aha0: reading board settings, dma=5 int=11  (bus speed defaulted)
aha0 at 0x330-0x333 irq 11 drq 5 on isa
aha0 waiting for scsi devices to settle
aha0 targ 0 lun 0: type 0(direct) fixed SCSI2
aha0 targ 0 lun 0: <QUANTUM LPS525S         3110>
sd0: 501MB (1027548 total sec), 2448 cyl, 6 head, 69 sec, bytes/sec 512
aha0 targ 1 lun 0: type 0(direct) fixed SCSI1
aha0 targ 1 lun 0: <MAXTOR  XT-4380S        B5A >
sd1: 318MB (651630 total sec), 1224 cyl, 15 head, 35 sec, bytes/sec 512
aha0 targ 2 lun 0: type 1(sequential) removable SCSI1
aha0 targ 2 lun 0: <ARCHIVE VIPER 150  20000-000>
st0: Archive  Viper 150 is a known rogue
st0: density code 0x0,  drive empty
aha0 targ 3 lun 0: type 0(direct) fixed SCSI1
aha0 targ 3 lun 0: <IMPRIMIS94601-15        1250>
sd2: 989MB (2026965 total sec), 1931 cyl, 15 head, 69 sec, bytes/sec 512
aha0 targ 5 lun 0: type 1(sequential) removable SCSI1
aha0 targ 5 lun 0: <EXABYTE EXB-8200        4.25>
st1: density code 0x0,  drive empty
ed0 at 0x280-0x29f irq 9 maddr 0xd8000 msize 16384 on isa
ed0: address 00:00:c0:d1:09:2d, type WD8013EP (16 bit) 
npx0 on motherboard
-- 
--------------------------------------------------------------------------
Michael Borowiec			All tied to their things,
mikebo@MCS.COM				they are netted by the strings...
					Free to flutter, in memory of
					their wasted wings...  P.Gabriel