From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tejun Heo Subject: Re: [PATCH 0/3] libsas: add support for port multiplier Date: Fri, 2 May 2014 11:36:17 -0400 Message-ID: <20140502153617.GH10204@htj.dyndns.org> References: <1398346023-10225-1-git-send-email-yxlraid@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from mail-qa0-f46.google.com ([209.85.216.46]:37477 "EHLO mail-qa0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751636AbaEBPgV (ORCPT ); Fri, 2 May 2014 11:36:21 -0400 Content-Disposition: inline In-Reply-To: <1398346023-10225-1-git-send-email-yxlraid@gmail.com> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Xiangliang Yu Cc: JBottomley@parallels.com, dan.j.williams@intel.com, todd.e.brandt@intel.com, lukasz.dorau@intel.com, linux-ide@vger.kernel.org, linux-kernel@vger.kernel.org, linux-scsi@vger.kernel.org On Thu, Apr 24, 2014 at 09:27:03PM +0800, Xiangliang Yu wrote: > This patch set will support SATA port multiplier(PM) in LIBSAS. > > LIBSAS is need to implement several key handling to support SATA PM: > First,low level driver notify libsas that SATA PM is attached to HBA port. > Then, LIBSAS will need to schedule SATA PMP error handler to scan SATA device > that is attached to PM, so we must implemet port softreset and PMP reset > handling. > If find SATA devices, we should add the devices into SAS transport layer. > In order to find SAS domain device we must implemet device type transformation > : scsi device -> (port number) -> ata device -> domain device. Then, we can > execute IO operation. > > In these patches, patch 1 is change SATA error handler. > And patch 2 will add SATA device into SAS layer and implement device type > transformation. Patch 3 implement SATA functional interface in mvsas. Please properly thread the patchset from the next posting. Dan, can you please take a look at this? Thanks. -- tejun