Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933595Ab0FCCGg (ORCPT ); Wed, 2 Jun 2010 22:06:36 -0400 Received: from mail-yw0-f179.google.com ([209.85.211.179]:64999 "EHLO mail-yw0-f179.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933519Ab0FCCGf (ORCPT ); Wed, 2 Jun 2010 22:06:35 -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; b=qn7KJ0behlQuO70++mJUXPA1t3lCag6l7Ce71XTFidKWc8+w2t0qAPyxrHXD70xAVz Zw07KofVjkzV0lmPZhestYfUqjn+L1GivKz8/OOVNWWNh5ojA6satx0Npz9VzIz8+iG/ b5h5liqtNqbJ99V6DPWEyrEMm3Yfs17mm0gbs= MIME-Version: 1.0 In-Reply-To: <20100603015659.GA19123@srcf.ucam.org> References: <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> <20100603015659.GA19123@srcf.ucam.org> Date: Wed, 2 Jun 2010 20:06:33 -0600 Message-ID: Subject: Re: [PATCH]X86:reboot.c Add some dmi entries to pci_reboot_dmi_table. From: Robert Hancock To: Matthew Garrett Cc: "Justin P. Mattock" , x86@kernel.org, tglx@linutronix.de, linux-kernel@vger.kernel.org Content-Type: text/plain; charset=ISO-8859-1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1401 Lines: 28 On Wed, Jun 2, 2010 at 7:56 PM, Matthew Garrett wrote: > On Wed, Jun 02, 2010 at 07:47:17PM -0600, Robert Hancock wrote: >> On Wed, Jun 2, 2010 at 7:37 PM, Matthew Garrett wrote: >> > 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.. > > Possibly an SMM trap... > >> Justin, what happens if you try the simple outb(6, 0xcf9) test program >> multiple times, does that do anything? > > Huh. That might work, yes. Windows does the ACPI write, an i8042 write, > the ACPI write, another i8042 write and then gives up. If that happens > sufficiently quickly, this might get us somewhere. Justin, can you try: If that's the sequence Windows is using then I'm thinking that's likely what we should be doing as well.. -- 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/