Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933626Ab0FCCQI (ORCPT ); Wed, 2 Jun 2010 22:16:08 -0400 Received: from mail-pv0-f174.google.com ([74.125.83.174]:45594 "EHLO mail-pv0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933579Ab0FCCQG (ORCPT ); Wed, 2 Jun 2010 22:16:06 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:user-agent:mime-version:to:cc:subject :references:in-reply-to:content-type:content-transfer-encoding; b=BuR9Nco/AuEzNm/Vic0QcufMtjQ/UaIzNhBQYYJO/8klai22WHLdIQkczWKDZauTgZ Ps4F0kVDnjY8a6uwvqKju1mQC2y02PdsxiECZ01FyJRoIb4yuxJetDlZ2w+qd0r4Tz6W EI0P5SdIc8Z70H9uj+n08XD5QpjQRw0yR2f8k= Message-ID: <4C07107A.8070602@gmail.com> Date: Wed, 02 Jun 2010 19:16:26 -0700 From: "Justin P. Mattock" User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.4pre) Gecko/20091114 Lightning/1.0pre Thunderbird/3.0b4 MIME-Version: 1.0 To: Robert Hancock CC: Matthew Garrett , x86@kernel.org, tglx@linutronix.de, linux-kernel@vger.kernel.org Subject: Re: [PATCH]X86:reboot.c Add some dmi entries to pci_reboot_dmi_table. 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> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1980 Lines: 64 On 06/02/2010 07:05 PM, Robert Hancock wrote: > 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?) > yeah single try. then I rebooted and it was like dead or something. Justin P. Mattock -- 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/