From owner-freebsd-scsi@FreeBSD.ORG Tue Mar 18 10:37:05 2014 Return-Path: Delivered-To: freebsd-scsi@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 3FC52154 for ; Tue, 18 Mar 2014 10:37:05 +0000 (UTC) Received: from smtp1.multiplay.co.uk (smtp1.multiplay.co.uk [85.236.96.35]) by mx1.freebsd.org (Postfix) with ESMTP id 03CB2B52 for ; Tue, 18 Mar 2014 10:37:04 +0000 (UTC) Received: by smtp1.multiplay.co.uk (Postfix, from userid 65534) id DE36620E7088A; Tue, 18 Mar 2014 10:36:51 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on smtp1.multiplay.co.uk X-Spam-Level: ** X-Spam-Status: No, score=2.1 required=8.0 tests=AWL,BAYES_00,DOS_OE_TO_MX, FSL_HELO_NON_FQDN_1,HELO_NO_DOMAIN,RDNS_DYNAMIC,STOX_REPLY_TYPE autolearn=no version=3.3.1 Received: from r2d2 (82-69-141-170.dsl.in-addr.zen.co.uk [82.69.141.170]) by smtp1.multiplay.co.uk (Postfix) with ESMTPS id 9195320E70886; Tue, 18 Mar 2014 10:36:47 +0000 (UTC) Message-ID: <1B1689B9E3D94E45963FBE018E25CD64@multiplay.co.uk> From: "Steven Hartland" To: "Borja Marcos" , References: <4C5437F0-E612-4907-8D52-6FCB15CC78E1@sarenet.es> Subject: Re: SATA on SAS and tags Date: Tue, 18 Mar 2014 10:36:40 -0000 MIME-Version: 1.0 Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=original Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.5931 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.6157 X-BeenThere: freebsd-scsi@freebsd.org X-Mailman-Version: 2.1.17 Precedence: list List-Id: SCSI subsystem List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 18 Mar 2014 10:37:05 -0000 mps presents its devices as SCSI devices not ATA, using firmware based translation, so thats actually expected. Regards Steve ----- Original Message ----- From: "Borja Marcos" To: Sent: Tuesday, March 18, 2014 10:01 AM Subject: SATA on SAS and tags > > Hello, > > I guess this is a bug. I am using SATA SSDs connecting to a SAS backplane and SAS controller (LSI2008, IT firmware, mps driver) > and I've just noticed that CAM claims a maximum of 255 tags. > > Shouldn't it be 16 using NCQ instead of TCQ? > > > mps0: port 0xfc00-0xfcff mem 0xdf2b0000-0xdf2bffff,0xdf2c0000-0xdf2fffff irq 32 at device 0.0 on pci2 > mps0: Firmware: 18.00.00.00, Driver: 16.00.00.00-fbsd > mps0: IOCCapabilities: 1285c > > camcontrol devlist > # camcontrol devlist > at scbus0 target 8 lun 0 (pass0,da0) > at scbus0 target 9 lun 0 (pass1,da1) > at scbus0 target 10 lun 0 (da2,pass2) > at scbus0 target 11 lun 0 (da3,pass3) > at scbus0 target 12 lun 0 (da4,pass4) > at scbus0 target 13 lun 0 (pass5,da5) > at scbus0 target 14 lun 0 (da6,pass6) > at scbus0 target 15 lun 0 (da7,pass7) > at scbus0 target 17 lun 0 (da8,pass8) > at scbus0 target 18 lun 0 (da9,pass9) > at scbus0 target 19 lun 0 (da10,pass10) > at scbus0 target 20 lun 0 (da11,pass11) > at scbus0 target 21 lun 0 (da12,pass12) > at scbus0 target 25 lun 0 (da13,pass13) > > > # camcontrol tags da10 -v > (pass10:mps0:0:19:0): dev_openings 255 > (pass10:mps0:0:19:0): dev_active 0 > (pass10:mps0:0:19:0): devq_openings 255 > (pass10:mps0:0:19:0): devq_queued 0 > (pass10:mps0:0:19:0): held -63 > (pass10:mps0:0:19:0): mintags 2 > (pass10:mps0:0:19:0): maxtags 255 > > > Thanks! > > > > > > Borja. > > > _______________________________________________ > freebsd-scsi@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-scsi > To unsubscribe, send any mail to "freebsd-scsi-unsubscribe@freebsd.org" >