Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933581Ab0FCCFd (ORCPT ); Wed, 2 Jun 2010 22:05:33 -0400 Received: from mail-gy0-f174.google.com ([209.85.160.174]:51512 "EHLO mail-gy0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933549Ab0FCCFb convert rfc822-to-8bit (ORCPT ); Wed, 2 Jun 2010 22:05:31 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type:content-transfer-encoding; b=IDMaQMHAU0cLmmI3xXaX2soj2wfmjM3/1L/l6hlm2gmpw7hab+iG0Kuyu+MlDg0qan ffjBROOI4MMOGUGFceVd57ohtZDlkYGQkkUDZCd5Uz5PzbDO1qHeA4YW84QSwJ8bdPr2 3RErynB8vfl3NAxQcsisCjAhbjh9oD080Dh38= MIME-Version: 1.0 In-Reply-To: <4C070CB4.2030304@gmail.com> References: <20100601212901.GA18390@srcf.ucam.org> <4C057EF0.2030808@gmail.com> <4C05E800.1010400@gmail.com> <4C05F3BF.6090503@gmail.com> <4C06ECAA.3060708@gmail.com> <4C06ED18.2010400@gmail.com> <4C06F1DD.8060004@gmail.com> <4C06F6EA.6090701@gmail.com> <20100603013758.GA18755@srcf.ucam.org> <4C070CB4.2030304@gmail.com> Date: Wed, 2 Jun 2010 20:05:29 -0600 Message-ID: Subject: Re: [PATCH]X86:reboot.c Add some dmi entries to pci_reboot_dmi_table. From: Robert Hancock To: "Justin P. Mattock" Cc: Matthew Garrett , x86@kernel.org, tglx@linutronix.de, linux-kernel@vger.kernel.org Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1778 Lines: 57 On Wed, Jun 2, 2010 at 8:00 PM, Justin P. Mattock wrote: > On 06/02/2010 06:47 PM, Robert Hancock wrote: >> >> On Wed, Jun 2, 2010 at 7:37 PM, Matthew Garrett >> ?wrote: >>> >>> On Wed, Jun 02, 2010 at 05:27:22PM -0700, Justin P. Mattock wrote: >>>> >>>> On 06/02/2010 05:20 PM, Robert Hancock wrote: >>>>> >>>>> #include >>>>> >>>>> int main() { >>>>> ? ? ? ? ?iopl(3); >>>>> ? ? ? ? ?outb(2, 0xcf9); >>>>> ? ? ? ? ?sleep(1); >>>>> ? ? ? ? ?outb(6, 0xcf9); >>>>> ? ? ? ? ?return 0; >>>>> } >>>>> >>>>> That's basically what PCI reboot does. >>>> >>>> the above code reboot's the machine as it should.. >>>> I can look at that(need to take a break first though) >>>> and see.. >>> >>> That's pretty infuriating. The ACPI-provided definition doesn't work, >>> and there's no ACPI mechanism for expressing the more complex cf9 >>> behaviour. Windows doesn't appear to special case this, so we're >>> probably left trying to figure out why the keyboard controller method >>> doesn't work. Sigh. >> >> Do these Macs even have a PC keyboard controller? A recent thread on >> PS/2 keyboard/mouse controller probing suggests they may not.. >> >> Justin, what happens if you try the simple outb(6, 0xcf9) test program >> multiple times, does that do anything? >> > > > this reboots the system > > > int main() { > ? ? ? ? ? iopl(3); > ? ? ? ? ? outb(6, 0xcf9); > ? ? ? ? ? return 0; > } On a single try, or multiple times? (You tried that one before once and it didn't work, right?) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/