Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S263316AbTH0LwI (ORCPT ); Wed, 27 Aug 2003 07:52:08 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S263336AbTH0LwI (ORCPT ); Wed, 27 Aug 2003 07:52:08 -0400 Received: from parcelfarce.linux.theplanet.co.uk ([195.92.249.252]:7134 "EHLO www.linux.org.uk") by vger.kernel.org with ESMTP id S263316AbTH0LwF (ORCPT ); Wed, 27 Aug 2003 07:52:05 -0400 Message-ID: <3F4C9B59.20504@pobox.com> Date: Wed, 27 Aug 2003 07:51:53 -0400 From: Jeff Garzik Organization: none User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.2.1) Gecko/20021213 Debian/1.2.1-2.bunk X-Accept-Language: en MIME-Version: 1.0 To: Matthias Andree CC: linux-kernel Subject: Re: Promise SATA driver GPL'd References: <20030722184532.GA2321@codepoet.org> <20030722185443.GB6004@gtf.org> <20030722190705.GA2500@codepoet.org> <20030722205629.GA27179@gtf.org> <20030722213926.GA4295@codepoet.org> <3F4C1F09.846A83EF@vtc.edu.hk> <3F4C2210.6050404@pobox.com> <20030827090020.GC9054@merlin.emma.line.org> In-Reply-To: <20030827090020.GC9054@merlin.emma.line.org> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1250 Lines: 37 Matthias Andree wrote: > On Tue, 26 Aug 2003, Jeff Garzik wrote: > > >>For the future, I'm currently whipping the libata internals into shape >>so that Promise may be supported. Promise hardware supports native >>command queueing, a lot like many SCSI adapters. > > > Is that true even for the older stuff such as a PDC20265? PATA stuff will continue to be supported via drivers/ide, I'm only shooting for the newer SATA stuff. > It appears that FreeBSD 4-STABLE blacklists some older (before-TX2) > Promise chips because they apparently lock up when used with tagged > command queueing. I haven't yet looked at the ATAng driver merged into > FreeBSD 5-CURRENT. ATA tagged command queueing is a bunch of crap. :) I'm not sure whether I want to implement it or not. I was referring to _native_ command queueing. ATA TCQ is something different. ATA TCQ does not allow multiple outstanding scatter/gather tables to be sent to the host controller. Native command queuing does. Jeff - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/