Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933427Ab0FCAfE (ORCPT ); Wed, 2 Jun 2010 20:35:04 -0400 Received: from mail-iw0-f174.google.com ([209.85.214.174]:64587 "EHLO mail-iw0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933364Ab0FCAfB (ORCPT ); Wed, 2 Jun 2010 20:35:01 -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=sVhs13rKiLHvzSUEtX4EUCbjkJNSE83r45ksJCGPaiFo1x7hZZQtSWWsK8nuVx1Bqv bihETSm8iXD8OefYoddFywzMZVEKWmJC9KhZgVni1G0F4g7aT6Ih4laKwL4sqQO96GkZ 3UZj9IA2I/LtEKFjzBkC+LM0ZdZmzWEP3dfCY= Message-ID: <4C06F8B0.1010805@gmail.com> Date: Wed, 02 Jun 2010 18:34:56 -0600 From: Robert Hancock User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.9) Gecko/20100430 Fedora/3.0.4-3.fc13 Thunderbird/3.0.4 MIME-Version: 1.0 To: "Justin P. Mattock" 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: <20100601192101.GA15086@srcf.ucam.org> <4C056839.8020605@gmail.com> <20100601200704.GA16091@srcf.ucam.org> <4C056AE6.3000409@gmail.com> <20100601202130.GA16391@srcf.ucam.org> <4C056E0C.2030709@gmail.com> <20100601203351.GA16575@srcf.ucam.org> <4C0572B4.6000201@gmail.com> <20100601211219.GA17719@srcf.ucam.org> <4C057AE9.9020307@gmail.com> <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> In-Reply-To: <4C06F6EA.6090701@gmail.com> 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: 2331 Lines: 82 On 06/02/2010 06:27 PM, Justin P. Mattock wrote: > On 06/02/2010 05:20 PM, Robert Hancock wrote: >> On Wed, Jun 2, 2010 at 6:05 PM, Justin P. Mattock >> wrote: >>>>>> Hmm, so the FADT says the reset register is listed as supported, and >>>>>> says writing 0x06 to 0xCF9 is supposed to do it.. That's exactly what >>>>>> this should do: >>>>>> >>>>>> #include >>>>>> >>>>>> int main() { >>>>>> iopl(3); >>>>>> outb(6, 0xcf9); >>>>>> return 0; >>>>>> } >>>>>> >>>>>> but you said that didn't do anything.. It kind of seems like ACPI >>>>>> reboot is busted on this machine then, but then I wonder how Windows >>>>>> manages to work.. >>>>>> >>>>> >>>>> >>>>> alright!! I have a better idea at what this is now.. >>>>> as for the above code, yes this one segfaults, >>>>> the other code posted on the thread just returns >>>>> a command prompt(testing: >>>> >>>> You get a segfault on that one? Running as root? >>>> >>> >>> my bad(tired)I left out iopl(3); >>> in the code which was giving a segfault. >>> >>> running the below code(s) just gives a command prompt >>> >>> int main() { >>> iopl(3); >>> outb(0xfe, 0xcf9); >>> return 0; >>> } >>> >>> int main() { >>> iopl(3); >>> outb(6, 0xcf9); >>> return 0; >>> } >> >> What if you do: >> >> #include >> >> int main() { >> iopl(3); >> outb(2, 0xcf9); >> sleep(1); >> outb(6, 0xcf9); >> return 0; >> } >> >> That's basically what PCI reboot does. >> >> It's possible it doesn't take the first time - you could try modifying >> drivers/acpi/reboot.c to call acpi_reset in a loop instead of just >> trying once (assuming you have the patch to default to ACPI reboot >> enabled). >> > > the above code reboot's the machine as it should.. > I can look at that(need to take a break first though) > and see.. > > what about the whole kbd mechanism(0x64) give the info I provided > does it look possible, or is this machine strictly on cf9? The keyboard controller reset is the kernel default, so I assume that doesn't work on this machine or else this wouldn't have come up in the first place.. -- 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/