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List:       freebsd-hackers
Subject:    Re: Gigabyte 970A-UD3P and hwpstate problem
From:       Mario Lobo <lobo () bsd ! com ! br>
Date:       2015-07-12 18:23:21
Message-ID: 20150712152321.51b8407c () Papi
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On Sat, 11 Jul 2015 15:50:06 +0200
"Herbert J. Skuhra" <herbert@oslo.ath.cx> wrote:

> On Fri, Jul 10, 2015 at 09:37:52PM -0300, Mario Lobo wrote:
> > Hi;
> > 
> > I just installed a Gigabyte 970A-UD3P mobo and updated BIOS to the
> > latest version but the problem also showed with the previous
> > version.
> > 
> > Here is my amd64 10-STABLE setup:
> > 
> > FreeBSD 10.2-PRERELEASE #0 r285207M: Tue Jul  7 00:11:01 BRT 2015
> > amd64
> > 
> > CPU: AMD FX-8320E Eight-Core Processor (3214.93-MHz K8-class CPU)
> > Origin="AuthenticAMD"  Id=0x600f20  Family=0x15  Model=0x2
> > Stepping=0
> > Features=0x178bfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,MMX,FXSR,SSE,SSE2,HTT>
> >  Features2=0x3e98320b<SSE3,PCLMULQDQ,MON,SSSE3,FMA,CX16,SSE4.1,SSE4.2,POPCNT,AESNI,XSAVE,OSXSAVE,AVX,F16C>
> >  AMD Features=0x2e500800<SYSCALL,NX,MMX+,FFXSR,Page1GB,RDTSCP,LM> AMD
> > Features2=0x1ebbfff<LAHF,CMP,SVM,ExtAPIC,CR8,ABM,SSE4A,MAS,Prefetch,OSVW,IBS,XOP,SKINIT,WDT,LWP,FMA4,TCE,NodeId,TBM,Topology,PCXC,PNXC>
> >  Structured Extended Features=0x8<BMI1>
> > SVM: NP,NRIP,VClean,AFlush,DAssist,NAsids=65536
> > TSC: P-state invariant, performance statistics
> > real memory  = 17179869184 (16384 MB)
> > [snip]
> > ACPI BIOS Warning (bug): Optional FADT field Pm2ControlBlock has
> > zero address or length: 0x0000000000000000/0x1 (20150515/tbfadt-673)
> > [snip]
> > hpet0: <High Precision Event Timer> iomem 0xfed00000-0xfed003ff on
> > acpi0
> > 
> > The problem:
> > 
> > powerd: no cpufreq(4) support -- aborting: No such file or directory
> > /etc/rc: WARNING: failed to start powerd
> 
> Could this be your problem:
> 
> r276986 | nwhitehorn | 2015-01-11 18:10:07 +0100 (søn, 11 jan 2015) |
> 8 lines
> 
> MFC r265329:
> Disable ACPI and P4TCC throttling by default, following discussion on
> freebsd-current. These CPU speed control techniques are usually
> unhelpful at best. For now, continue building the relevant code into
> GENERIC so that it can trivially be re-enabled at runtime if anyone
> wants it.
> 
> Relnotes:       yes
> 
> % svnlite diff -c 276986 sys/amd64/conf/GENERIC.hints 
> Index: sys/amd64/conf/GENERIC.hints
> ===================================================================
> --- sys/amd64/conf/GENERIC.hints        (revision 276985)
> +++ sys/amd64/conf/GENERIC.hints        (revision 276986)
> @@ -31,3 +31,5 @@
> hint.attimer.0.port="0x40"
> hint.attimer.0.irq="0"
> hint.wbwd.0.at="isa"
> +hint.acpi_throttle.0.disabled="1"
> +hint.p4tcc.0.disabled="1"
> 
> Does it work if your unset or remove those lines
> from /boot/device.hints?
> 

YEEESSS ! Thanks for pointing that out!

I have these commented on my loader.conf but I didn't know they were
active somewhere else.

As far as cpufreq/powerd goes, it's working now and frequencies are
being throttled but still no cool'n'quiet/hwpstate0 showing on dmesg.
acpi_throttle attaches to cpu0 but not to the others.

acpi_throttle0: <ACPI CPU Throttling> on cpu0
acpi_throttle1: <ACPI CPU Throttling> on cpu1
acpi_throttle1: failed to attach P_CNT
device_attach: acpi_throttle1 attach returned 6
acpi_throttle2: <ACPI CPU Throttling> on cpu2
acpi_throttle2: failed to attach P_CNT
device_attach: acpi_throttle2 attach returned 6
acpi_throttle3: <ACPI CPU Throttling> on cpu3
acpi_throttle3: failed to attach P_CNT
device_attach: acpi_throttle3 attach returned 6
acpi_throttle4: <ACPI CPU Throttling> on cpu4
acpi_throttle4: failed to attach P_CNT
device_attach: acpi_throttle4 attach returned 6
acpi_throttle5: <ACPI CPU Throttling> on cpu5
acpi_throttle5: failed to attach P_CNT
device_attach: acpi_throttle5 attach returned 6
acpi_throttle6: <ACPI CPU Throttling> on cpu6
acpi_throttle6: failed to attach P_CNT
device_attach: acpi_throttle6 attach returned 6
acpi_throttle7: <ACPI CPU Throttling> on cpu7
acpi_throttle7: failed to attach P_CNT
device_attach: acpi_throttle7 attach returned 6

sysctl -a | grep freq

dev.cpufreq.0.%parent: cpu0
dev.cpufreq.0.%pnpinfo: 
dev.cpufreq.0.%location: 
dev.cpufreq.0.%driver: cpufreq
dev.cpufreq.0.%desc: 
dev.cpufreq.%parent: 
dev.acpi_throttle.0.freq_settings: 10000/-1 8750/-1 7500/-1 6250/-1
5000/-1 3750/-1 2500/-1 1250/-1 dev.cpu.0.freq_levels: 3214/-1 2812/-1
2410/-1 2008/-1 1607/-1 1205/-1 803/-1 
dev.cpu.0.freq: 803


Thanks again!
-- 
Mario Lobo
http://www.mallavoodoo.com.br
FreeBSD since 2.2.8 [not Pro-Audio.... YET!!] (99% winblows FREE)
 
"UNIX was not designed to stop you from doing stupid things, 
because that would also stop you from doing clever things."
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