From owner-acpi-jp@jp.FreeBSD.org Wed Mar 17 03:10:43 2004
Received: (from daemon@localhost)
	by castle.jp.FreeBSD.org (8.11.6p2+3.4W/8.11.3) id i2GIAhZ67089;
	Wed, 17 Mar 2004 03:10:43 +0900 (JST)
	(envelope-from owner-acpi-jp@jp.FreeBSD.org)
Received: from root.org (root.org [67.118.192.226])
	by castle.jp.FreeBSD.org (8.11.6p2+3.4W/8.11.3) with SMTP/inet id i2GIAf767081
	for <acpi-jp@jp.FreeBSD.org>; Wed, 17 Mar 2004 03:10:41 +0900 (JST)
	(envelope-from nate@root.org)
Received: (qmail 95784 invoked by uid 1000); 16 Mar 2004 18:10:36 -0000
From: Nate Lawson <nate@root.org>
To: Chia-liang Kao <clkao@clkao.org>
cc: imp@freebsd.org, acpi-jp@jp.FreeBSD.org
In-Reply-To: <20040316143411.GA4468@portege.clkao.org>
Message-ID: <20040316100826.S95770@root.org>
References: <20040316143411.GA4468@portege.clkao.org>
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII
Reply-To: acpi-jp@jp.FreeBSD.org
Precedence: list
Date: Tue, 16 Mar 2004 10:10:36 -0800
X-Sequence: acpi-jp 3112
Subject: [acpi-jp 3112] Re: acpi FADT and throttle problems
Sender: owner-acpi-jp@jp.FreeBSD.org
X-Originator: nate@root.org
X-Distribute: distribute version 2.1 (Alpha) patchlevel 24e+040307

On Tue, 16 Mar 2004, Chia-liang Kao wrote:
> I have some problems with throttling my Toshiba 3490.
>
> acpidump -t shows me: DUTY_OFFSET=1, DUTY_WIDTH=0 in FADT, so i don't
> have the hw.acpi.throttle MIB at all. while my dmesg says:
> CPU: Intel Pentium III (500.02-MHz 686-class CPU)
>   Origin = "GenuineIntel"  Id = 0x686  Stepping = 6
>
> So it looks like it should be able to trottle. Is it possible to
> override the FADT or fix it somehow?

Throttling is related to the chipset as well as CPU.  The system designer
specified 0 for the width for a reason.  You should try the acpi_toshiba
driver.  It provides throttling sysctls of its own.  If you absolutely
have to try ACPI throttling, you can just remove the check for cpu_width
== 0 in acpi_cpu.c.

-Nate
