Date: Mon, 3 Apr 1995 18:32:01 -0500 (CDT) From: bob@obiwan.pmr.com (Bob Willcox) To: freebsd-current@freefall.cdrom.com (freebsd-current) Subject: aic7xxx.c: Target Busy console messages Message-ID: <m0rvvbF-00030nC@obiwan.pmr.com>
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I have noticed that with my new AHA-2740 controller card I get repetitive
ahc0: Target Busy
Messages on the console when accessing my Exabyte 8200 tape drive.
Is this message important? (The bt742a.c driver appears to not
issue a message for a busy status.) From the Exabyte EXB-8200
User's Manual:
"Busy status indicates the EXB-8200 is in the busy state. The
EXB-8200 is in a busy state when it is performing an internal
operation that prevents it from accepting another command until
the operation is complete.
The EXB-8200 returns Busy status for a command request until
the busy state is released. After the busy state is released,
the initiator must reissue the command to the EXB-8200. When
the busy state is released, selection operation and commands
can be executed normally."
>From this, it sounds to me that this is a rather normal condition
and that the driver should simply reissue the command (periodically)
until successful. Is this true of other devices as well?
Comments?
--
Bob Willcox
bob@obiwan.pmr.com (or obiwan%bob@uunet.uu.net)
Austin, TX
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