Date: Thu, 18 Sep 1997 08:57:34 GMT From: Walter Hafner <hafner@forwiss.tu-muenchen.de> To: freebsd-scsi@freebsd.org, freebsd-hardware@freebsd.org Cc: hafner@forwiss.tu-muenchen.de Subject: Is my NCR controller broken? Message-ID: <199709180857.IAA03695@pccog4.forwiss.tu-muenchen.de>
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Hello!
I just want to make sure I don't miss something before changing my
mainboard. Please enlighten me.
I run a 486/DX2-66 (ASUS SP-3 with onboard NCR-810 SCSI
controller). This computer runs for about 3 years now (2.0.5, 2.1.0,
2.1.5)
Since about four weeks I keep getting SCSI resets and then the bus is
dead. No recovery! And it's really strange because the NCR controller
reports totally different errors before hanging. Here are the error
reports from the last three crashes (typed in by hand, so the actual
format may differ):
-------------------------------------------------------------------------------
sd1(ncr0:1:0): internal error: cmd00 != 91=(vdsp[0] >> 24)
ncr0: timeout ccb=f19fbc00 (skip)
-------------------------------------------------------------------------------
ncr0:1: ERROR (a0:0) (f-28-0) (8/13) @ (260:00000000).
script cmd=fc00001c.
reg: da 10 80 13 47 08 01 1f 00 0f 81 28 80 00 00 00.
ncr0: restart (fatal error).
sd1(ncr0:1:0): command failed (9ff)@f19fbc00.
nrc0: timeout ccb=f19fbc00 (skip)
-------------------------------------------------------------------------------
ncr0: SCSI phase error fixup: CCB already dequeued (0xf19fbc00)
nrc0: timeout ccb=f19fbc00 (skip)
-------------------------------------------------------------------------------
I changed everything:
* disconnected everything except the system drive -> still errors
* changed cables (three different ones) -> still errors
* changed termination (two different external ones, internal, different
termpower sttings etc.) -> still errors
* turned all devices to 5MB synchr. and finally to acync via
'ncrcontrol' -> still errors
* finally replaced the system drive (old DEC 5200 against new IBM DAHC
34330) and put 2.2.1 on it -> still errors. Actually, the errors above
are from that setup.
The only thing I didn't change was the mainboard.
I'd be glad if anyone can confirm my suspicion that the NCR controller
has gone nuts. I just can't imagine why ...
I'd also appreciate it very much if someone with more insight than
myself could explain the error reports to me. I'd especially like to
know what this 'f19fbc00' means: it shows up in all three errors (what's
a 'ccb' anyway?)
Thanks in advance!
-Walter
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