Re: C2/C3 don't do anything

[Dominik Brodowski <linux-X3ehHDuj6sIIGcDfoQAp7BvVK+yQ3ZXh@public.gmane.org>]

On Fri, Feb 04, 2005 at 02:55:28PM -0800, Tony Lindgren wrote:
> > > > Should we have some extra code to scan the southbridges,
> > > 
> > > Definitely. There is already some "errata" handling in the processor module,
> > > possibly this could get extended.
> > 
> > I'm still using the patch to enable C3 on ICHx-M I once posted. Basically,
> > it provided a valid PM2_CNT_BLK address in case the OEM had forgotten to do
> > that, which in turn enabled C3 by providing a valid ARB_DIS address
> > (provided P_LVL3_LAT is valid).
> 
> I have some code for the amd76x_pm module that can be modified for
> scanning various southbridges. And then add functions for the
> to enable them. I don't know when I'll have time to play with that
> though.
> 
> This could be a separate module to start with, and then get integrated
> into the ACPI code later on.

Or this could be an extension of
drivers/acpi/processor_core.c::acpi_processor_errata() from the beginning.
Len, what do you think?

	Dominik


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