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From: Nate Lawson <nate@root.org>
To: Mark Santcroos <marks@ripe.net>
cc: acpi-jp@jp.FreeBSD.org
In-Reply-To: <20030721051928.GA654@laptop.6bone.nl>
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References: <20030720153907.A32793@root.org> <20030721051928.GA654@laptop.6bone.nl>
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Date: Mon, 21 Jul 2003 10:11:58 -0700
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Subject: [acpi-jp 2484] Re: acpi and cpu performance states
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On Mon, 21 Jul 2003, Mark Santcroos wrote:
> On Sun, Jul 20, 2003 at 03:45:55PM -0700, Nate Lawson wrote:
> > dmesg:
> > acpi_cpu0: <CPU> on acpi0
>
> + acpi_cpu: throttling enabled, 8 steps (100% to 12.5%), currently 100.0%
>
> > sysctl:
>
> + hw.acpi.cpu.max_speed: 8
> + hw.acpi.cpu.current_speed: 8
> + hw.acpi.cpu.performance_speed: 8
> + hw.acpi.cpu.economy_speed: 8
>
>
> I think you should find out why you don't have the stuff above.

The reason is that I have an ACPI 2.0 ASL and so it doesn't have as much
data in the processor block region.  Instead, it's in the namespace as
_PTC, _PCT, _PSS, _PPC as shown in the ASL I posted.  So without
implementing ACPI 2.0 support in acpi_cpu.c, it's unlikely that I will get
those.  Basically, the DutyWidth in my FADT is not > 0.

-Nate
