From owner-freebsd-current Fri Aug 23 8:34:23 2002 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 1540737B400 for ; Fri, 23 Aug 2002 08:34:16 -0700 (PDT) Received: from mail.speakeasy.net (mail12.speakeasy.net [216.254.0.212]) by mx1.FreeBSD.org (Postfix) with ESMTP id 9F29D43E42 for ; Fri, 23 Aug 2002 08:34:15 -0700 (PDT) (envelope-from jhb@FreeBSD.org) Received: (qmail 9736 invoked from network); 23 Aug 2002 15:34:14 -0000 Received: from unknown (HELO server.baldwin.cx) ([216.27.160.63]) (envelope-sender ) by mail12.speakeasy.net (qmail-ldap-1.03) with DES-CBC3-SHA encrypted SMTP for ; 23 Aug 2002 15:34:14 -0000 Received: from laptop.baldwin.cx (gw1.twc.weather.com [216.133.140.1]) by server.baldwin.cx (8.12.5/8.12.5) with ESMTP id g7NFYDBQ024946; Fri, 23 Aug 2002 11:34:13 -0400 (EDT) (envelope-from jhb@FreeBSD.org) Message-ID: X-Mailer: XFMail 1.5.2 on FreeBSD X-Priority: 3 (Normal) Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 8bit MIME-Version: 1.0 In-Reply-To: <20020822192553.U33737-100000@carver.gumbysoft.com> Date: Fri, 23 Aug 2002 11:34:17 -0400 (EDT) From: John Baldwin To: Doug White Subject: Re: install crash on hp omnibook 6100 Cc: Andy Sparrow , Tomas Hodan , freebsd-current@FreeBSD.ORG Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On 23-Aug-2002 Doug White wrote: > On Thu, 22 Aug 2002, John Baldwin wrote: > >> > There is an issue with the HP laptop DSDT and our ACPI code. They >> > initialize some child devices before initializing their parents, causing >> > an infinite loop. The acpi-jp list doesn't seem interested in changing >> > the way we do initialization, and theres no docs on the part it's >> > initializing to rewrite the DSDT. >> >> Hmm, could you clarify. What child devices is it initializing first? > > Its trying to fetch some data from the cardbus controller before its been > initialized, but its trying to do it in its own _REG routine or > something... look for FDS_._REG; the CSID() function is what initiates > the loop. Reading the AML I don't see why we would get into a loop (and atm I don't feel like wading through 900k to see where the loop is). > I attempted to post a note to the acpi-jp list in april asking about our > architecture model but it appears to have never made it. We may need to > revisit our assumption that ACPI can be initialized top-down. No, you have to do things top-down. ACPI assumes this in several areas. For example, if you want to power on a PCI bus, you have to power on the bus before powering on devices off that bus. If you want to power off a bus, you power off children first, but initialization of devices is much more like the power on situation since parent devices provide resources needed by child devices. -- John Baldwin <>< http://www.FreeBSD.org/~jhb/ "Power Users Use the Power to Serve!" - http://www.FreeBSD.org/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message