Re: ncr53c875-0-<0,0>: M_REJECT received due to xm3401b cd-rom

Gerhard Traeger (Gerhard.Traeger@t-online.de)
Sun, 13 Sep 1998 17:05:41 +0200


Oh no! Me again!

I patched kernel 2.1.107 to ncr-driver 0.5 and compiled stock 2.1.121.

I got M_REJECTs for both. I disconnected the uw disc. Still M_REJECT.
I disconnected DDS and MO-disk. No M_REJECT ...
Now i am running 2.1.107+0.5 with all devices, passive termination at
scsi 2 end, *TAGS=32,*SYNC=40, recompile kernel 121 (because of
ppp-errors), waiting for M_REJECT for

> uptime
> 4:31pm up 30 min, 3 users, load average: 1.07, 0.88, 0.58
> 5:03pm up 1:02, 3 users, load average: 0.00, 0.06, 0.35

U understand?

The only software dependency that might be true:

3.0g(107/117/121): ncr53c875-0-<0,0>: M_REJECT received (75:8)
ncr53c875-0-<0,0>: M_REJECT received (35:8)

0.[(4)5](107/117): ncr53c875-0-<0,0>: M_REJECT received (19:8)

with scsi II devices only:

0.5(107): ncr53c875-0-<0,0>: M_REJECT received (3e:8)

and of course:

2.5f(107): no M_REJECT

while

2.5f(117): ncr53c875-0-<0,0>: M_REJECT sent for 1-3-1-19-1e
ncr53c875-0-<1,0>: M_REJECT sent for 1-3-1-19-f

btw: smp=y, 2xi586/133, 128MB, gcc2.8.1;

Is there any chance to separate bus signal corruption from memory
corruption?

you wrote:

>It seems to occur during the device scan at start-up.

I dont believe this. Sometimes there was M_REJECT after i ran x11.
When i started 2.1.121+3.0g first, i got several block _like_

ncr53c875-0: restart (scsi reset).
ncr53c875-0: Downloading SCSI SCRIPTS.
ncr53c875-0-<1,*>: FAST-10 SCSI 10.0 MB/s (100 ns, offset 16)
ncr53c875-0-<0,0>: M_REJECT received (75:8).

mixed into the normal boot messages (start of init, init of isdn ...)
(The above four lines are from previous message, i didnīt save the new
ones. As they occured so regular, i wouldnīt expect to be unable to
reproduce them now. If i remember correctly, both discs appeared, disc
id 1 using 20MB.).

gerhard.

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.rutgers.edu
Please read the FAQ at http://www.tux.org/lkml/faq.html