Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932244AbVJCOPV (ORCPT ); Mon, 3 Oct 2005 10:15:21 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932243AbVJCOPV (ORCPT ); Mon, 3 Oct 2005 10:15:21 -0400 Received: from magic.adaptec.com ([216.52.22.17]:49857 "EHLO magic.adaptec.com") by vger.kernel.org with ESMTP id S932239AbVJCOPU (ORCPT ); Mon, 3 Oct 2005 10:15:20 -0400 Message-ID: <43413CE8.1090306@adaptec.com> Date: Mon, 03 Oct 2005 10:15:04 -0400 From: Luben Tuikov User-Agent: Mozilla Thunderbird 1.0.6 (X11/20050716) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Jeff Garzik CC: Andre Hedrick , "David S. Miller" , willy@w.ods.org, patmans@us.ibm.com, ltuikov@yahoo.com, linux-kernel@vger.kernel.org, akpm@osdl.org, torvalds@osdl.org, linux-scsi@vger.kernel.org, James Bottomley Subject: Re: I request inclusion of SAS Transport Layer and AIC-94xx into the kernel References: <433D8542.1010601@adaptec.com> <433DD0F8.4000501@pobox.com> In-Reply-To: <433DD0F8.4000501@pobox.com> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-OriginalArrivalTime: 03 Oct 2005 14:15:05.0455 (UTC) FILETIME=[DA2AE7F0:01C5C824] Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1146 Lines: 36 On 09/30/05 19:57, Jeff Garzik wrote: > Luben Tuikov wrote: > >>MPT-based drivers + James Bottomley's "transport attributes" > > > You continue to fail to see that a transport class is more than just > transport attributes. > > You continue to fail to see that working on transport class support IS a > transport layer, that includes management. > > Is you don't understand this fundamental stuff, how can we expect you to > get it right? >From what I see, because of its *layering* position JB's "transport attributes" cannot satisfy open transport. The reason is that MPT-based drivers indeed do need host template in the LLDD. Open Transport (SBP/USB/SAS) do not, since the chip is only an interface to the transport. The host template is implemented by a transport layer, say USB Storage or the SAS Transport Layer. This allows you to do great things, like layer intersection. Luben - 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/