[issue1359] PowerNow! support

[Sepherosa Ziehau]

On Mon, May 11, 2009 at 5:38 AM, Alexander Polakov (via DragonFly
issue tracker) <sinknull at leaf.dragonflybsd.org> wrote:
>
> Alexander Polakov <polachok at gmail.com> added the comment:
>
>>But another thing: As you are the only person so far for whom this patch
>>works, can you check out if it works OK with sysutils/estd from pkgsrc,
>>which seems to support the machdep.powernow sysctls.
> Attached one works nice with estd (just added a sysctl).
>
>>It enters the for loop in k8pnow_states() but the memcmp() never succeeds.
> ACPI tables can be used instead, but I have no idea how to implement it at the
> moment. Anyway, I'm going to learn more about ACPI to fix acpi_ec and acpi_tz
> spamming system console with NO_HARDWARE_RESPONSE. Btw I made
> acpica-unix-20090422 port (which doesn't bring any benefit though).

I am planning to add pstate kernel module, but the first step will be
splitting cstate support from acpi_cpu module; so pstate and cstate
could be children devices of acpi_cpu.  Some BIOS only supplies
PCT/PSS/PPC stuffs through ACPI DSDT nowadays.

Best Regards,
sephe

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