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Date:      Sun, 2 Jul 1995 03:24:39 GMT
From:      Stephen Hocking <sysseh@devetir.qld.gov.au>
To:        bugs@freebsd.org
Subject:   sea0 & imprimis94601-15 hangs at boot
Message-ID:  <199507020324.DAA00610@netfl15a.devetir.qld.gov.au>

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>using the sea0 driver/device and an imprimis94601-15 (aka seagate 
>st41200nv), the machine hangs at boot during device probe.
>the disk is the only target on the scsi bus.
>the bus is terminated at both ends.
>
>to aid the debug effort, i have editted seagate.c  #define DEBUG on line 
>120 of seagate.c
>
>the driver/device works with an archive viper 150 attached to the scsi bus.
>the disk works with FreeBSD 1.1.5.1 and the adaptec 1542C/CF, aha driver.
>
>i have not used DDB before or the rest of the kernel debugging tools,
>but i am just itching to start ;^).    send in the patches!

	I have the same problesm, at the moment I'm using the 2.0 seagate.c
with SEA_BLIND_TRANSFER undefined. I've also, turned on the NOMSGS define,
as it was having timeout problems with 2 devices attached. I notice that
yours is the TMC-885 like mine. The main work was apparently done on a ST02.
My theory (which I'm in the process of building a kernel to confirm) is that
the TMC-885 series does not support disconnect/reconnect at all well. I'll
be hacking on the latest version of the driver soon if my experiment turns
out to support this hypothesis.

	Stephen




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