From mboxrd@z Thu Jan 1 00:00:00 1970 From: James Bottomley Subject: Re: [PATCH] libata: add enclosure management support Date: Fri, 18 Jan 2008 18:47:18 -0600 Message-ID: <1200703638.3111.95.camel@localhost.localdomain> References: <20080115164417.4a5e2789@appleyard> <1200610243.3255.47.camel@localhost.localdomain> <20080118085227.4b7a379f@appleyard> <1200676281.3111.20.camel@localhost.localdomain> <20080118094116.7ac94f2e@appleyard> <1200701795.3111.89.camel@localhost.localdomain> <20080118163512.65d93c53@appleyard> Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit Return-path: Received: from accolon.hansenpartnership.com ([76.243.235.52]:39850 "EHLO accolon.hansenpartnership.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756295AbYASAr0 (ORCPT ); Fri, 18 Jan 2008 19:47:26 -0500 In-Reply-To: <20080118163512.65d93c53@appleyard> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: kristen.c.accardi@intel.com Cc: jeff@garzik.org, linux-ide@vger.kernel.org On Fri, 2008-01-18 at 16:35 -0800, Kristen Carlson Accardi wrote: > > Unfortunately, all the dual SAS/SATA enclosures seem to be coming with > > either SGPIO devices or full fledged SES-2 devices. I've actually got > > both (a backplane with SGPIO and an internal SAS/SATA enclosure with > > SES-2). Unfortunately, I don't have the necessary information to > > drive the SGPIO one ... it's connected directly to an aix94xx using > > the mini4i SGPIO signals ... I think aic94xx can drive them, we just > > don't have the programming information. The other is a standard > > SES-2 device, which I think I might be able to get working. > > > > Having documentation would be pretty helpful :). I know for ICH8, if > you read the docs it says that it supports SGPIO as well. But then you > realize it supports SGPIO via the LED protocol, wired up to translate > LED to SGPIO via hardware. But, even if it did support straight SGPIO, > this design can accommodate that. Can we see the documentation for the > SES-2 device? Yes, sure; SES-2 is here (usual place, since it's a SCSI standard): http://www.t10.org/ftp/t10/drafts/ses2/ses2r19a.pdf SGPIO is more convoluted. The canonical link is http://www.sffcommittee.com/ but that just seems to send you back to seagate. The actual standard is this one: ftp://ftp.seagate.com/sff/SFF-8485.PDF James