From owner-freebsd-hackers Wed Mar 21 2: 4:31 2001 Delivered-To: freebsd-hackers@freebsd.org Received: from mass.dis.org (mass.dis.org [216.240.45.41]) by hub.freebsd.org (Postfix) with ESMTP id EB0AA37B744 for ; Wed, 21 Mar 2001 02:04:27 -0800 (PST) (envelope-from msmith@mass.dis.org) Received: from mass.dis.org (localhost [127.0.0.1]) by mass.dis.org (8.11.2/8.11.2) with ESMTP id f2LA1g502649; Wed, 21 Mar 2001 02:01:43 -0800 (PST) (envelope-from msmith@mass.dis.org) Message-Id: <200103211001.f2LA1g502649@mass.dis.org> X-Mailer: exmh version 2.1.1 10/15/1999 To: thomas@cuivre.fr.eu.org Cc: freebsd-hackers@freebsd.org Subject: Re: SCSI-over-* hacks In-reply-to: Your message of "Wed, 21 Mar 2001 10:52:50 +0100." <20010321105250.A35328@melusine.cuivre.fr.eu.org> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Mime-Version: 1.0 Content-Transfer-Encoding: quoted-printable Date: Wed, 21 Mar 2001 02:01:42 -0800 From: Mike Smith Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG > Le 2001-03-21, Mike Smith =E9crivait : > = > > > Has anyone implemented/thought of implementing: > > > - a CAM transport for ATAPI devices; > > Yes. It's not a lot of work. > = > Ah, interesting! Do you know if any source code is publicly available? No, for various reasons it hasn't been done; primarily, the FreeBSD ATA = maintainer doesn't consider it worthwhile. > > > - a CAM transport for USB scanners; > > No; this wouldn't make much sense, since most USB scanners aren't SCS= I = > > devices. > > Mine (Minolta Dim=E2ge Scan Dual II, an Avision unit in disguise) is :)= Think about it for a moment. SCSI is way of encapsulating scanner commands so that you can transport = them to the scanner. So is USB. The command set your scanner uses is = probably the same as the SCSI command set, but this is not what a CAM = transport would give you - it would only give you the layers beneath, = which would not be useful, since you already have this in the form of USB= =2E > > > - the Linux SCSI generic device (/dev/sg*)? > > We already have a far superior mechanism (/dev/pass*) > = > Think 'Linux binary-only software'... Think "barfing up a prime rib, plus all the vegetables and gravy". 8) -- = =2E.. every activity meets with opposition, everyone who acts has his rivals and unfortunately opponents also. But not because people want to be opponents, rather because the tasks and relationships force people to take different points of view. [Dr. Fritz Todt] V I C T O R Y N O T V E N G E A N C E To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message