From owner-freebsd-current@FreeBSD.ORG Wed Aug 25 23:28:09 2004 Return-Path: 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 990A116A4CE; Wed, 25 Aug 2004 23:28:09 +0000 (GMT) Received: from www.cryptography.com (li-22.members.linode.com [64.5.53.22]) by mx1.FreeBSD.org (Postfix) with ESMTP id 6A82C43D62; Wed, 25 Aug 2004 23:28:09 +0000 (GMT) (envelope-from nate@root.org) Received: from [10.0.0.34] (adsl-67-127-84-57.dsl.snfc21.pacbell.net [67.127.84.57]) by www.cryptography.com (8.12.8/8.12.8) with ESMTP id i7PNS78U002098; Wed, 25 Aug 2004 16:28:08 -0700 Message-ID: <412D2087.4000306@root.org> Date: Wed, 25 Aug 2004 16:28:07 -0700 From: Nate Lawson User-Agent: Mozilla Thunderbird 0.7.3 (Windows/20040803) X-Accept-Language: en-us, en MIME-Version: 1.0 To: "M. Warner Losh" References: <20040825.161733.103236573.imp@bsdimp.com> <20040825222345.GB79209@ip.net.ua> <412D12D4.1000401@root.org> <20040825.163521.103131991.imp@bsdimp.com> In-Reply-To: <20040825.163521.103131991.imp@bsdimp.com> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit cc: phk@phk.freebsd.dk cc: current@freebsd.org Subject: Re: No more floppy drive X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.1 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, 25 Aug 2004 23:28:09 -0000 M. Warner Losh wrote: > In message: <412D12D4.1000401@root.org> > Nate Lawson writes: > : There are only two ways currently to find fd0 on ISA systems: ACPI _FDE > : probing and hints. The acpi probe automatically falls back to the hints > : system if _FDE fails so you should leave the hint.fd.0 lines in but > : comment out hint.fdc lines (as you've done). > > I think this is a bad idea, but may be what we have to do for 5.3. We > can find out what drives are on the system by asking the rtc() if > there's no _FDE, which is what the old, pre-acpi code did (which is > why people are seeing their drives disappear now). This is incorrect. The acpi commits did not remove any rtc probe; there never was one. There were only two commits by me to fdc.c so check them out to see what I mean. All I did was move the existing hints probe into its own function, fdc_hints_probe(). The easiest way to see how fdX gets probed is to look for callers to fdc_add_child(). They are fdc_acpi_probe_children() and fdc_hints_probe(). The latter is called by the ISA attachment or the ACPI attachment if the _FDE method is not present. (BTW, it seems the pccard attachment doesn't probe this way?) -- Nate