From mboxrd@z Thu Jan 1 00:00:00 1970 From: Douglas Gilbert Subject: Re: LSI Logic 1068E and SATA port replicators (Sil3726) Date: Fri, 04 Dec 2009 11:48:46 +0100 Message-ID: <4B18E90E.3090401@interlog.com> References: <4B18C83C.6060105@diskware.net> Reply-To: dgilbert@interlog.com Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from smtp.infotech.no ([82.134.31.41]:47088 "EHLO elrond.infotech.no" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753480AbZLDKso (ORCPT ); Fri, 4 Dec 2009 05:48:44 -0500 In-Reply-To: <4B18C83C.6060105@diskware.net> Sender: linux-scsi-owner@vger.kernel.org List-Id: linux-scsi@vger.kernel.org To: Martin Scholl Cc: linux-scsi@vger.kernel.org Martin, There is mention of SATA port selectors in the SAS spec (optional functionality in a SAS expander I think) but no mention of SATA port multipliers. The reason might be that a SAS expander already includes the functionality of a SATA port multiplier. The "ATA architectural notes" in Annex J of sas2r16.pdf found at www.t10.org might help. Doug Gilbert Martin Scholl wrote: > Hello all, > > > [disclaimer: what follows is probably a really stupid idea after all.] > > We would like to use a LSI SAS 1068E board with Sil3726 SATA port > replicators. This obviously "fails" in that only 1 disk out of the 5 > connected is actually visible. > > I found, if SATA drivers are to support a port multiplier, they inhert > from sata_pmp_port_ops. Is an analog infrastructure available for the > sas-based HBAs to support SATA port multipliers? (BTW is such a setup > actually supported form a protocol point of view?) > > I'm not a regular kernel hacker, so I cannot really help you in getting > quality sata mpm support (if possible after all) into the sas drivers. > What I can definitely offer is my time and will to test the driver > modifications you would send me. > > > > Martin > -- > To unsubscribe from this list: send the line "unsubscribe linux-scsi" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html >