Date: Tue, 31 Jan 2006 12:38:59 +0100 From: Florent Thoumie <flz@xbsd.org> To: Matthew Jacob <mj@feral.com> Cc: freebsd-scsi@freebsd.org, Nate Lawson <nate@root.org> Subject: Re: cvs commit: src/sys/cam/scsi scsi_da.c src/sys/dev/usb umass.c usbdevs Message-ID: <200601311239.10248.flz@xbsd.org> In-Reply-To: <20060130213338.H79194@ns1.feral.com> References: <20060130202806.DCC7916A4CA@hub.freebsd.org> <43DEF43A.6090804@root.org> <20060130213338.H79194@ns1.feral.com>
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--nextPart3005303.P7i632OuBW Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Content-Disposition: inline On Tuesday 31 January 2006 06:33, Matthew Jacob wrote: > >> Linux only sends the SYNCHRONIZE_CACHE command if the WCE (Write Cache > >> Enable) bit of the disk is set. I can't seem to find something > >> equivalent to this in our CAM framework. I have no particular SCSI > >> knowledge but I guess I can have a look at this tomorrow. > >> > >> I'm forwarding this to freebsd-scsi@ (keep me CC'ed, as I'm not > >> subscribed to this list, yet). > > > > Hmm, is WCE part of the inquiry response? [moving to scsi@ list] > > Yes. Hum, reading Linux source and SCSI standard [1], I'm not so sure, but I mig= ht=20 be wrong. We need to request the caching page in scsi_mode_sense_{6,10}. I'll try to write something today, but I guess someone having already worke= d=20 on scsi will only need 10 minutes to DTRT. [1] http://www.danbbs.dk/~dino/SCSI/SCSI2-09.html (table 156) =2D-=20 =46lorent Thoumie flz@FreeBSD.org =46reeBSD Committer --nextPart3005303.P7i632OuBW Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.2 (FreeBSD) iD8DBQBD30xeMxEkbVFH3PQRAh5hAJ41awguZx4xg/Mec2huUjS0BNQxjQCfYPHY zo1mPzWax9DpJISLF9IwFU0= =asgn -----END PGP SIGNATURE----- --nextPart3005303.P7i632OuBW--
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