From owner-freebsd-current@FreeBSD.ORG Wed May 3 21:53:41 2006 Return-Path: X-Original-To: freebsd-current@freebsd.org Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id C2A0F16A408 for ; Wed, 3 May 2006 21:53:41 +0000 (UTC) (envelope-from takawata@init-main.com) Received: from ns.init-main.com (104.194.138.210.bn.2iij.net [210.138.194.104]) by mx1.FreeBSD.org (Postfix) with ESMTP id 5CE8B43D46 for ; Wed, 3 May 2006 21:53:41 +0000 (GMT) (envelope-from takawata@init-main.com) Received: from init-main.com (localhost [127.0.0.1]) by ns.init-main.com (8.13.6/8.13.3) with ESMTP id k43Lpjg2009960; Thu, 4 May 2006 06:51:54 +0900 (JST) (envelope-from takawata@init-main.com) Message-Id: <200605032151.k43Lpjg2009960@ns.init-main.com> To: "M. Warner Losh" From: takawata@jp.freebsd.org In-reply-to: Your message of "Mon, 01 May 2006 22:27:43 CST." <20060501.222743.32503989.imp@bsdimp.com> Date: Thu, 04 May 2006 06:51:45 +0900 Sender: takawata@init-main.com Cc: freebsd-current@freebsd.org Subject: Re: lpt0 disappear (ppc related) X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 03 May 2006 21:53:41 -0000 In message <20060501.222743.32503989.imp@bsdimp.com>, "M. Warner Losh" さんいわ く: >In message: <200605020815.31012.doconnor@gsoft.com.au> > "Daniel O'Connor" writes: >: On Tuesday 02 May 2006 01:23, M. Warner Losh wrote: >: > : However you wouldn't expect that using it as a module would result in >: > : reduced functionality. (The same as how you wouldn't expect compiling >: > : something into your kernel would result in reduced functionality) >: > >: > At the same time, you'd expect it to behave like every other 'bus' in >: > the tree. We omit the attachments for drivers to that bus when the >: > kernel is built w/o that bus. This is why if you have, say, ep in the >: > kernel, but pccard loaded as a module, the 3c589 you just inserted >: > into the pccard slot won't work. >: > >: > It is a minor imperfection in the config system that no one has taken >: > on as a Problem To Solve. Solving it turns out to be somewhat tricky. >: >: Hmm, but I load acpi as a module and get acpi attachments.. (for sio and ppc >) >: >: it's black magic to me anyway :) >: >: I didn't mean to belittle Marcel's work, I was just suprised that it would >: cause a functionality loss like that. > >I think it just points out a weakness in the underlying system... Is it time to hide isa_dma interface under isa_if ? All acpi capable archictectures links isa_if.c, I think.