Date: Wed, 21 Mar 2001 11:32:39 +0100 From: Thomas Quinot <thomas@cuivre.fr.eu.org> To: Mike Smith <msmith@freebsd.org> Cc: thomas@cuivre.fr.eu.org, freebsd-hackers@freebsd.org Subject: Re: SCSI-over-* hacks Message-ID: <20010321113239.B37126@melusine.cuivre.fr.eu.org> In-Reply-To: <200103211001.f2LA1g502649@mass.dis.org>; from msmith@freebsd.org on Wed, Mar 21, 2001 at 02:01:42AM -0800 References: <20010321105250.A35328@melusine.cuivre.fr.eu.org> <200103211001.f2LA1g502649@mass.dis.org>
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Le 2001-03-21, Mike Smith écrivait :
> 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.
Um. The CAM tranport in question would not be a reimplementation of
the USB layer, of course. What I was mentioning was the possibility
of having a CAM transport that wraps a uscan device (just as there is
one already that wraps umass devices to make them appear as SCSI disks).
This would allow all USB scanners that use an SCSI command set to be
accessible through pass*, and thus be supported by any scanning software
that can use a SCSI scanner.
Thomas.
--
Thomas.Quinot@Cuivre.FR.EU.ORG
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