From owner-cvs-src@FreeBSD.ORG Tue Jan 27 17:53:36 2004 Return-Path: Delivered-To: cvs-src@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id EE91F16A4CE for ; Tue, 27 Jan 2004 17:53:36 -0800 (PST) Received: from mail2.speakeasy.net (mail2.speakeasy.net [216.254.0.202]) by mx1.FreeBSD.org (Postfix) with ESMTP id 4F30443D2F for ; Tue, 27 Jan 2004 17:53:33 -0800 (PST) (envelope-from jhb@FreeBSD.org) Received: (qmail 11806 invoked from network); 27 Jan 2004 20:51:27 -0000 Received: from dsl027-160-063.atl1.dsl.speakeasy.net (HELO server.baldwin.cx) ([216.27.160.63]) (envelope-sender ) encrypted SMTP for ; 27 Jan 2004 20:51:27 -0000 Received: from 10.50.40.205 (gw1.twc.weather.com [216.133.140.1]) by server.baldwin.cx (8.12.10/8.12.10) with ESMTP id i0RKpMM0058328; Tue, 27 Jan 2004 15:51:23 -0500 (EST) (envelope-from jhb@FreeBSD.org) From: John Baldwin To: Nate Lawson , "M. Warner Losh" Date: Tue, 27 Jan 2004 15:28:31 -0500 User-Agent: KMail/1.5.4 References: <200401270604.i0R64Fpc076025@repoman.freebsd.org> <20040127.091238.05978307.imp@bsdimp.com> <20040127112940.W37323@root.org> In-Reply-To: <20040127112940.W37323@root.org> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200401271528.31581.jhb@FreeBSD.org> X-Spam-Checker-Version: SpamAssassin 2.55 (1.174.2.19-2003-05-19-exp) cc: cvs-src@FreeBSD.org cc: src-committers@FreeBSD.org cc: cvs-all@FreeBSD.org Subject: Re: cvs commit: src/share/man/man9 bus_alloc_resource.9 bus_set_resource.9 X-BeenThere: cvs-src@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: CVS commit messages for the src tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 28 Jan 2004 01:53:37 -0000 On Tuesday 27 January 2004 02:55 pm, Nate Lawson wrote: > On Tue, 27 Jan 2004, M. Warner Losh wrote: > > In message: <200401270604.i0R64Fpc076025@repoman.freebsd.org> > > > > Nate Lawson writes: > > : njl 2004/01/26 22:04:15 PST > > : > > : FreeBSD src repository > > : > > : Modified files: > > : share/man/man9 bus_alloc_resource.9 bus_set_resource.9 > > : Log: > > : Document my adventures in newbus land. Clarify some examples, > > : especially that count is in bytes, not bits. There are some drivers > > : that I think make this mistake. (I've seen counts of 16 in the tree). > > > > Counts of 16 in the tree are likely correct. Many devices have 8 or > > 16 or 32 io ports in ISA land. I've not seen any drivers make this > > mistake. Care to give an example? > > Well, for one ichsmb(4). It allocates 16 IO ports but only uses 8 > according to its .h. The netgraph bt3c driver allocates 8 but only uses > 5. I'm curious if wi/owi really need 64 IO ports. The hardware needs to reserve any resource ranges that it will answer. Thus, the entire length of a PCI BAR needs to be reserved to keep another device from thinking it can use a resource that is silently going to conflict with another device. -- John Baldwin <>< http://www.FreeBSD.org/~jhb/ "Power Users Use the Power to Serve" = http://www.FreeBSD.org