Date: Sat, 2 Nov 1996 21:12:39 -0500 (EST) From: Thomas David Rivers <ponds!rivers@dg-rtp.dg.com> To: ponds!freefall.cdrom.com!freebsd-hackers, ponds!lakes.water.net!rivers Subject: AHA2940 problems with 2.1.5-STABLE. Message-ID: <199611030212.VAA00237@lakes.water.net>
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I've just recovered from a "lock-up" of sorts in the aha2940
code.
Apparently, what I was doing triggered a reset of the SCSI bus;
which sent the ahc0: driver into a loop; continually resetting
the drives.
Although the machine was "working" - I couldn't get access to
any of the SCSI devices: disk drives, tapes or CD-ROM.
Of course, the ahc driver was producing much output; but syslogd was unable
to actually write this to /var/log/messages...
I quickly wrote it down; but could be mistaken here:
QOUTINT=0
cd0(ahc0:3:0) time out in status phase, SCSISGI==0xe6
sd1(ahc0:1:0) asserted ATN - device reset in message buffer
sd1(ahc0:1:0) timed out in status phase, SCSISGI==0xf6
ahc0: Issued Channel A Bus Reset #1. 4 SCBs aborted
This repeated for a while, and then the output changed to:
QOUTINT=0
cd0(ahc0:3:0) unknown error category from host adapter code
sd1(ahc0:1:0) asserted ATN - device reset in message buffer
sd1(ahc0:1:0) timed out in status phase, SCSISGI==0xf6
ahc0: Issued Channel A Bus Reset #1. 4 SCBs aborted
Then, it changed again to:
QOUTINT=0
cd0(ahc0:3:0) time out in status phase, SCSISGI==0xe6
sd1(ahc0:1:0) asserted ATN - device reset in message buffer
sd1(ahc0:1:0) timed out in status phase, SCSISGI==0xf6
ahc0: Issued Channel A Bus Reset #1. 5 SCBs aborted
ahc0: WARNING no command for scb1 (cmdcmplt)
It would cycle between these basic three... After about 15 minutes,
I rebooted the machine...
Now - the question to ask is just what did I do to cause this.
1) Begin writing a tape, using tar.
2) Start Xmcd and begin playing a CD.
This will cause the tape writing to start to fail; with
write error messages.
3) Stop the CD.
This sent my machine into the loop.
My configuration is a pentium 133 PCI machine, Triton II VX chipset,
with the following devices (from my latest reboot.):
FreeBSD 2.1.5-STABLE #1: Sat Nov 2 09:09:05 EST 1996
rivers@lakes.water.net:/usr/src/sys.2.1.5S/compile/LAKES
CPU: 133-MHz Pentium 735\90 or 815\100 (Pentium-class CPU)
Origin = "GenuineIntel" Id = 0x52c Stepping=12
Features=0x1bf<FPU,VME,DE,PSE,TSC,MSR,MCE,CX8>
real memory = 33554432 (32768K bytes)
avail memory = 30605312 (29888K bytes)
Probing for devices on PCI bus 0:
chip0 <generic PCI bridge (vendor=%04x device=%04x subclass=%1.2d)> rev 1 on pci0:0
chip1 <Intel 82371SB PCI-ISA bridge> rev 1 on pci0:7:0
chip2 <Intel 82371SB IDE interface> rev 0 on pci0:7:1
ahc0 <Adaptec 2940 Ultra SCSI host adapter> rev 0 int a irq 15 on pci0:17
ahc0: aic7880 Wide Channel, SCSI Id=7, 16 SCBs
ahc0 waiting for scsi devices to settle
(ahc0:0:0): "HP C3323-300 4242" type 0 fixed SCSI 2
sd0(ahc0:0:0): Direct-Access 1003MB (2056008 512 byte sectors)
ahc0:A:1: refuses WIDE negotiation. Using 8bit transfers
(ahc0:1:0): "MICROP 1548-15MZ1077802 HZ2P" type 0 fixed SCSI 1
sd1(ahc0:1:0): Direct-Access 1635MB (3349512 512 byte sectors)
ahc0:A:2: refuses WIDE negotiation. Using 8bit transfers
ahc0:A:2: refuses syncronous negotiation. Using asyncronous transfers
(ahc0:2:0): "WANGTEK 5150ES SCSI FA23 08" type 1 removable SCSI 1
st0(ahc0:2:0): Sequential-Access drive offline
(ahc0:3:0): "NEC CD-ROM DRIVE:400 1.0" type 5 removable SCSI 2
cd0(ahc0:3:0): CD-ROM cd present.[320520 x 2048 byte records]
vga0 <VGA-compatible display device> rev 211 int a irq 11 on pci0:20
I'm running a 2.1.5-STABLE kernel I grabbed on Oct. 17th.
I'd be happy to assist in any way in tracking this down...
- Dave Rivers -
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