From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1765984AbXG0QLi (ORCPT ); Fri, 27 Jul 2007 12:11:38 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1761626AbXG0QL3 (ORCPT ); Fri, 27 Jul 2007 12:11:29 -0400 Received: from avexch1.qlogic.com ([198.70.193.115]:50598 "EHLO avexch1.qlogic.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751107AbXG0QL2 (ORCPT ); Fri, 27 Jul 2007 12:11:28 -0400 Date: Fri, 27 Jul 2007 09:11:20 -0700 From: Andrew Vasquez To: Andrew Patterson Cc: Ulrich Windl , linux-kernel@vger.kernel.org Subject: Re: Q: PCI-X @ 266MHz on HP rx6600 (Qlogic 4Gb FC HBA) Message-ID: <20070727161120.GB20540@plap.qlogic.org> References: <46A8BF75.161.5C8424A@Ulrich.Windl.rkdvmks1.ngate.uni-regensburg.de> <1185487419.7134.485.camel@bluto.andrew> <20070727062343.GC15408@plap.qlogic.org> <1185551189.7134.501.camel@bluto.andrew> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1185551189.7134.501.camel@bluto.andrew> Organization: QLogic Corporation User-Agent: Mutt/1.5.13 (2006-08-11) X-OriginalArrivalTime: 27 Jul 2007 16:10:35.0673 (UTC) FILETIME=[AA5CC090:01C7D068] Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 27 Jul 2007, Andrew Patterson wrote: > On Thu, 2007-07-26 at 23:23 -0700, Andrew Vasquez wrote: > > > The 33/66/100/133 values refer to the bus-clock speed at which the > > card is operating. As is seen here (although a bit truncated -- > > separate issue, I'll try to see if I can reproduce this on one of my > > HPQ rigs), the card is inserted into a PCI-X Mode-2 capable 133MHz > > (bus clock) slot. When operating under this mode, each data-phase > > between two devices is divided into 2 sub-phases, effectively doubling > > the transfer-data-rate to 266Mhz. > > I guess the proper terminology would be 266 MT/s (Mega > Transfers/second). Looking through the PSI_SIG PCI-X 2.0 marketing > blurbs, they use MHz a lot when referring to MT/S. So I would still > consider this to be a minor bug. The user wants to know the transfer > rate, not the actual frequency of the bus. Maybe just print out the > mode used instead, e.g., "PCI-X 266"? That sounds reasonable. I'll spin some patches today after I verify all the bus-bits with the PUI group. Thanks, Andrew Vasquez