Date: Fri, 11 Jul 2008 12:42:15 -0700 From: Nate Lawson <nate@root.org> To: Jeremy Chadwick <koitsu@FreeBSD.org> Cc: freebsd-hackers@FreeBSD.org Subject: Re: AuthenticAMD, cpufreq and SunFire X2200 Message-ID: <4877B797.9020209@root.org> In-Reply-To: <20080711193815.GA63636@eos.sc1.parodius.com> References: <E1KHNXP-000F4k-Kf@cs1.cs.huji.ac.il> <20080711193815.GA63636@eos.sc1.parodius.com>
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Jeremy Chadwick wrote: > 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. Looks like someone should check the AMD datasheets and/or acpidump. I'm currently not an active committer though. -- Nate
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