From owner-freebsd-hackers Fri Nov 1 02:50:56 1996 Return-Path: owner-hackers Received: (from root@localhost) by freefall.freebsd.org (8.7.5/8.7.3) id CAA17129 for hackers-outgoing; Fri, 1 Nov 1996 02:50:56 -0800 (PST) Received: from hda.hda.com (ip73-max1-fitch.zipnet.net [199.232.245.73]) by freefall.freebsd.org (8.7.5/8.7.3) with SMTP id CAA17124 for ; Fri, 1 Nov 1996 02:50:52 -0800 (PST) Received: (from dufault@localhost) by hda.hda.com (8.6.12/8.6.12) id FAA07666; Fri, 1 Nov 1996 05:28:54 -0500 From: Peter Dufault Message-Id: <199611011028.FAA07666@hda.hda.com> Subject: Re: probing scsi bus after boot? In-Reply-To: <6089.846795037@time.cdrom.com> from "Jordan K. Hubbard" at "Oct 31, 96 12:50:37 pm" To: jkh@time.cdrom.com (Jordan K. Hubbard) Date: Fri, 1 Nov 1996 05:28:54 -0500 (EST) Cc: joerg_wunsch@uriah.heep.sax.de, freebsd-hackers@FreeBSD.org, jlk@pavilion.co.uk X-Mailer: ELM [version 2.4ME+ PL25 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-hackers@FreeBSD.org X-Loop: FreeBSD.org Precedence: bulk > Huh? I just do this on /dev/sd0 or some other - it works great! > I use it to detect my scanner after power-up all the time. The super SCSI device is needed when nothing is on the bus at boot - you then need a way into the system for that case. Try putting your scanner on its own bus with no SCSI devices (I forgot - you NEVER have a system with no SCSI devices). The super SCSI device should support bus configuration (such as reprobe) and "device target" types of calls ("become this SCSI NEXUS"). It is essentially a SCSI bus device. I added it when I was doing some work with a prototype device on a dedicated bus that was frequently not powered up. IMHO super SCSI should be left working this way, maybe renamed to be a bus device. The SCSI user code should be ripped out with extreme prejudice - it is superceded by the newer configuration code. The code suffers from no use and no test. Peter -- Peter Dufault Real-Time Machine Control and Simulation HD Associates, Inc. Voice: 508 433 6936 dufault@hda.com Fax: 508 433 5267