From owner-freebsd-acpi@FreeBSD.ORG Fri Dec 10 18:43:29 2004 Return-Path: Delivered-To: freebsd-acpi@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 54DCF16A4DF for ; Fri, 10 Dec 2004 18:43:29 +0000 (GMT) Received: from www.cryptography.com (li-22.members.linode.com [64.5.53.22]) by mx1.FreeBSD.org (Postfix) with ESMTP id A3D6A43D39 for ; Fri, 10 Dec 2004 18:43:28 +0000 (GMT) (envelope-from nate@root.org) Received: from [10.0.0.34] (adsl-67-119-74-222.dsl.sntc01.pacbell.net [67.119.74.222]) by www.cryptography.com (8.12.8/8.12.8) with ESMTP id iBAIhQC4014091 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NOT); Fri, 10 Dec 2004 10:43:27 -0800 Message-ID: <41B9EE4E.8030703@root.org> Date: Fri, 10 Dec 2004 10:43:26 -0800 From: Nate Lawson User-Agent: Mozilla Thunderbird 0.9 (Windows/20041103) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Ulrich Spoerlein References: <41B4E577.9060502@root.org> <41B50754.10604@centtech.com> <41B50C12.6070103@root.org> <20041208095845.GA896@galgenberg.net> <41B76AF2.3040204@root.org> <20041210180446.GA768@galgenberg.net> In-Reply-To: <20041210180446.GA768@galgenberg.net> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit cc: acpi@FreeBSD.org Subject: Re: suspend/resume improved? X-BeenThere: freebsd-acpi@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: ACPI and power management development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 10 Dec 2004 18:43:29 -0000 Ulrich Spoerlein wrote: > On Wed, 08.12.2004 at 12:58:26 -0800, Nate Lawson wrote: > >>Add an infinite loop at various points in the suspend process until it >>hangs but doesn't reset. Start with the end of the first function below >>and work your way backwards. Once you identify the exact place the >>reset occurs, we can figure out why. Use boot -s to keep from having to >>fsck on each reset or hang. >> >>AcpiEnterSleepState():sys/contrib/dev/acpica/hwsleep.c > > > Line 444 is the culprit: > ACPI_FLUSH_CPU_CACHE (); > > Status = AcpiHwRegisterWrite (ACPI_MTX_DO_NOT_LOCK, ACPI_REGISTER_PM1A_CONTROL, PM1AControl); > if (ACPI_FAILURE (Status)) > { > return_ACPI_STATUS (Status); > } > > Putting the loop before AcpiHwRegisterWrite will enter infinite loop, > putting it after it -> Reset Interesting. If you add a "DELAY(10000);" before the register write, does this help? A more likely issue is that we need to write pm1a/b at the same time. Let me think about this and get you more info later. -- Nate