From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tejun Heo Subject: Re: [patch] libata: use correct map_db values for ICH8 Date: Sat, 21 Oct 2006 01:35:20 +0900 Message-ID: <4538FAC8.4040709@gmail.com> References: <20061019132739.10e504ef.kristen.c.accardi@intel.com> <453891AD.70704@gmail.com> <20061020092622.f564da61.kristen.c.accardi@intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from ug-out-1314.google.com ([66.249.92.174]:10055 "EHLO ug-out-1314.google.com") by vger.kernel.org with ESMTP id S932274AbWJTQfa (ORCPT ); Fri, 20 Oct 2006 12:35:30 -0400 Received: by ug-out-1314.google.com with SMTP id z34so669864ugc for ; Fri, 20 Oct 2006 09:35:28 -0700 (PDT) In-Reply-To: <20061020092622.f564da61.kristen.c.accardi@intel.com> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Kristen Carlson Accardi Cc: linux-ide@vger.kernel.org, linux-kernel@vger.kernel.org, jeff@garzik.org Kristen Carlson Accardi wrote: >> Do you guys have doc update related to this? The doc and spec update >> still indicate that MAP value is reserved to 00b. Anyways, if you say >> that's right... >> >> Acked-by: Tejun Heo >> > As far as I know, this has always been documented. > The datasheet is located here: > http://developer.intel.com/design/chipsets/datashts/313056.htm Yeap, that's what I've been looking at for the whole time. > Indicates that 10b is valid for combined mode. Make sure you are looking > at device 31 function 2 - for 31 function 5 it is hardwired to 00b, but > for function 2, it can be 00 or 10. This was not very clear, so it's > easy to understand how this could have been misunderstood. See > section 11.1.33 in the notes, or do a search on "combined mode" through > the doc, and you'll see that MV can be 10b when SCC is 01 on device 31 > function 2. Ah... you're right. Thanks for pointing out. -- tejun