To: "Mike Berhan" <mikeb@bustrace.com> Cc: t10@t10.org Subject: Re: SMC-3r10 - Request Data Transfer Element Inquiry From: Kevin D Butt <kdbutt@us.ibm.com> Date: Mon, 7 Jan 2008 12:16:55 -0700 X-Message-Number: 8404 Formatted message: HTML-formatted message Mike, SPC-4r11 Annex C.3.3 lists the Maintenance IN op codes. Values A3h/00h-04h and A3/06h-09h are listed as "Restricted". This means that each command set is free to assign these values as it sees fit. Stated differently, when PERIPHERAL DEVICE TYPE in standard inquiry reports SCC device, then A3h/06h is interpreted as "REPORT STATES". When PERIPHERAL DEVICE TYPE in standard inquiry reports SMC device, then A3h/06h is interpreted as "REQUEST DATA TRANSFER ELEMENT INQUIRY". Kevin D. Butt SCSI & Fibre Channel Architect, Tape Firmware MS 6TYA, 9000 S. Rita Rd., Tucson, AZ 85744 Tel: 520-799-2869 / 520-799-5280 Fax: 520-799-2723 (T/L:321) Email address: kdbutt@us.ibm.com http://www-03.ibm.com/servers/storage/ "Mike Berhan" <mikeb@bustrace.com> Sent by: owner-t10@t10.org 01/07/2008 10:34 AM To <t10@t10.org> cc Subject SMC-3r10 - Request Data Transfer Element Inquiry * From the T10 Reflector (t10@t10.org), posted by: * "Mike Berhan" <mikeb@bustrace.com> * There seems to be an opcode conflict in SMC-3 going back several years. This is probably something that has been covered before or perhaps it's just a simple typo. Table 5 of SMC-3 shows the "Commands for media changer devices." For the MAINTENANCE IN commands, it shows the following operation codes: A3h/00h-04h A3h/06h-09h These operation codes are defined in SCC-2. Turning to SCC-2, we find that A3h/06h is defined as the "REPORT STATES" service action. Turning back to SMC-3, we see in Table 30 that A3h/06h is defined as "REQUEST DATA TRANSFER ELEMENT INQUIRY." This appears to be a conflict with A3h/06h unless I missed something. Can someone clarify this for me? Thank you. ------- Mike Berhan busTRACE Technologies 9700 Village Center Drive Suite 50-F Granite Bay, CA 95746 916.773.4554 phone 916.218.6283 fax http://www.bustrace.com * * For T10 Reflector information, send a message with * 'info t10' (no quotes) in the message body to majordomo@t10.org