Date: Fri, 11 Jul 2008 12:38:15 -0700 From: Jeremy Chadwick <koitsu@FreeBSD.org> To: Danny Braniss <danny@cs.huji.ac.il> Cc: freebsd-hackers@freebsd.org, nate@root.org Subject: Re: AuthenticAMD, cpufreq and SunFire X2200 Message-ID: <20080711193815.GA63636@eos.sc1.parodius.com> In-Reply-To: <E1KHNXP-000F4k-Kf@cs1.cs.huji.ac.il> References: <E1KHNXP-000F4k-Kf@cs1.cs.huji.ac.il>
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On Fri, Jul 11, 2008 at 09:40:11PM +0300, Danny Braniss wrote: > > On Fri, Jul 11, 2008 at 03:57:00PM +0300, Danny Braniss wrote: > > > Hi, > > > I'm trying to find out why there is no frequency info. > > > ie: > > > sunfire> sysctl dev.cpu.0 > > > dev.cpu.0.%desc: ACPI CPU > > > dev.cpu.0.%driver: cpu > > > dev.cpu.0.%location: handle=\_PR_.P001 > > > dev.cpu.0.%pnpinfo: _HID=none _UID=0 > > > dev.cpu.0.%parent: acpi0 > > > dev.cpu.0.cx_supported: C1/0 > > > dev.cpu.0.cx_lowest: C1 > > > dev.cpu.0.cx_usage: 100.00% > > > > > > so any help/insight is most welcome. > > > > > > BTW, its 7.0-stable > > > > Is the cpufreq device in your kernel config? Do the SunFire X2200's > > provide any sort of frequency data in their ACPI tables? Are there BIOS > > settings which are relevant to this board enabling Cool'n'Quiet or > > anything else of that nature (thus inducing the use of powernow(4))? > > > device is configured: > config -x /boot/kernel/kernel | grep -a cpufreq > device cpufreq > the BIOS has powernow enabled (or something similar). > the kernel prints: > ... > powernow0: <PowerNow! K8> on cpu0 > powernow0: STATUS: 0x3106120806120212 > powernow0: STATUS: maxfid: 0x12 > powernow0: STATUS: maxvid: 0x06 > ... > the same is repeated for cpu 1,2,3,4,5,6 & 7 - yes it's a dual quad. > > which seem to indicate that it didn't like the ACPI data it got - this by > comparing with other amd's that do report correctly. > > as to the question '...any sort of frequency data in their ACPI tables' > I tried to 'read' the ACPI data, but didn't understand the language :-( First and foremost, please don't remove the mailing list from the CC line; others need to know the technical details. I don't have an answer for you, however. Nate Lawson might have some ideas as to what's going on. A verbose boot may be needed. I've CC'd Nate here. -- | Jeremy Chadwick jdc at parodius.com | | Parodius Networking http://www.parodius.com/ | | UNIX Systems Administrator Mountain View, CA, USA | | Making life hard for others since 1977. PGP: 4BD6C0CB |
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