Date: Tue, 13 Mar 2007 23:01:29 +0100 From: Thomas Quinot <thomas@FreeBSD.ORG> To: Scott Long <scottl@samsco.org> Cc: josh.carroll@gmail.com, freebsd-scsi@freebsd.org, bug-followup@freebsd.org Subject: Re: kern/103602: drive gets wedged on READ CD CAPACITY if no disc is in Message-ID: <20070313220129.GA6579@melamine.cuivre.fr.eu.org> In-Reply-To: <45F71B7D.3090305@samsco.org> References: <20070313205731.GB3866@melamine.cuivre.fr.eu.org> <45F71A0F.4080601@samsco.org> <45F71B7D.3090305@samsco.org>
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* Scott Long, 2007-03-13 : > >I'm confused. CAM actually sends a READ_CAPACITY command to the drive, > >not a READ_CD_CAPACITY command. Are you saying that issuing both a > >READ_CAPACITY and a READ_CD_CAPACITY to an empty Sony drive results in > >the same bad behavior? Er, now *I* am confused. As I understand it, READ CAPACITY and READ CD RECORDED CAPACITY both refer to the same opcode (0x25), READ CAPACITY being the SBC terminology, while READ CD RECORDED CAPACITY is the MMC terminology. > Actually, I take that back, adding a TUR phase isn't as hard as I > thought. I'd like to know if doing a READ_CD_CAPACITY makes a > difference, though. Josh can probably test some commands and report the results, if you send him some camcontrol cmd's to experiment with. Thomas.
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