Fujitsu P8010: est: CPU supports Enhanced Speedstep, but is not recognized

[Anish Mistry]

On Friday 29 February 2008, Yousif Hassan wrote:
> > Anish Mistry wrote:
> >> I got a new Fujitsu P8010 and est doesn't seem to attach to my
> >> dual core processor since it doesn't recognize the CPU.  My
> >> dmesg is linked at the end of the email.  Is there anything I
> >> can do to add it?
> >>
> >> cpu0: <ACPI CPU> on acpi0
> >> ACPI: SSDT @ 0x0xcf6cac73/0x01F6 (v  1 FUJ    FJNB1E3 
> >> 0x01050000 FUJ 0x00000100)
> >> ACPI: SSDT @ 0x0xcf6cb173/0x05CD (v  1 FUJ    FJNB1E3 
> >> 0x01050000 FUJ 0x00000100)
> >> est0: <Enhanced SpeedStep Frequency Control> on cpu0
> >> est: CPU supports Enhanced Speedstep, but is not recognized.
> >> est: cpu_vendor GenuineIntel, msr 619061906000619
> >> device_attach: est0 attach returned 6
> >> p4tcc0: <CPU Frequency Thermal Control> on cpu0
> >> cpu1: <ACPI CPU> on acpi0
> >> ACPI: SSDT @ 0x0xcf6cb0bb/0x00B8 (v  1 FUJ    FJNB1E3 
> >> 0x01050000 FUJ 0x00000100)
> >> ACPI: SSDT @ 0x0xcf6cb740/0x0047 (v  1 FUJ    FJNB1E3 
> >> 0x01050000 FUJ 0x00000100)
> >> est1: <Enhanced SpeedStep Frequency Control> on cpu1
> >> est: CPU supports Enhanced Speedstep, but is not recognized.
> >> est: cpu_vendor GenuineIntel, msr 619061906000619
> >> device_attach: est1 attach returned 6
> >>
> >>
> >> dmesg:
> >> http://am-productions.biz/docs/dmesg.boot
> >
> > I was about to say that est.c was not updated for 21 months so
> > newer processors is likely not to be supported by Enhanced
> > Speedstep but 3 hours ago there was a patch notified :)
> >
> > http://www.freebsd.org/cgi/cvsweb.cgi/src/sys/i386/cpufreq/est.c
> >
> > It doesn't look like it's going to help us though. I have the
> > exact same problem with all my new systems. Two core 2 duo and
> > one core 2 quad. They run way to hot without the correct
> > speedstep setting.
> >
> > The big issue that I can see is that the frequency-voltage tables
> > are missing in FreeBSD est.c, but they are for example easily
> > available at:
> > http://developer.intel.com/products/processor/core2duo/ Someone
> > with the knowledge and time just needs to implement it.
>
> Anish, are you running amd64?  This seems to be a recurring theme
> with amd64, based on some research I did and based on my anecdotal
> evidence.
Yes, I'm running amd64.

> I see this problem on my HP dv9700t which features a Core 2 Duo
> (T7500) if it boots an amd64 kernel.  In this case, the p4tcc
> driver attaches instead. Unfortunately, this driver only offers
> relative frequency control - good but not great.
My processor is an SL7100.

> When I boot the same machine with i386 kernel, est attaches fine
> and frequency control is far superior.  I have tested it out in
> numerous ways and it keeps the temperature nice and cool and scales
> up and down as needed (if powerd is adaptive or if passive cooling
> is on).
>
> Perhaps someone with more knowledge can confirm that there's
> something fishy with amd64.  Since it works in FreeBSD/i386, the
> fix is probably simpler than not.
>
> Yousif



-- 
Anish Mistry
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 187 bytes
Desc: This is a digitally signed message part.
Url : http://lists.freebsd.org/pipermail/freebsd-acpi/attachments/20080229/0f8c19b7/attachment.pgp