CFT: k8temp driver

[Rui Paulo]

On Feb 10, 2008, at 8:51 PM, Carl Johan Gustavsson wrote:

> Rui Paulo wrote:
>> Hi,
>> Some AMD systems have two thermal sensors on both cores. I wrote a
>> simple driver to access these temperatures, but I don't have a system
>> to test. If anyone has a AMD K8 system, I would love if you could  
>> test
>> the k8temp driver that I wrote based on the Linux one.
>>
>> Get it at:
>>    http://people.freebsd.org/~rpaulo/k8temp.tgz
>>
>> Compile/test with:
>>    $ tar xzvf k8temp.tgz && cd k8temp
>>    $ make SYSDIR=/path/to/src/sys
>>    # kldload ./k8temp.ko
>>
>> This is still pre-alpha quality, so please don't use it on a
>> production system.
>>
>> Thanks in advance.
>> -- 
>> Rui Paulo
>>
> Hi!
>
> Tested it seems to work just fine! I gathered this info:
>
> # uname -a
> FreeBSD sleipner.home.swe 7.0-PRERELEASE FreeBSD 7.0-PRERELEASE #0:  
> Sat
> Feb  2 22:02:17 CET 2008
> carl at sleipner.home.swe:/usr/home/carl/usr.obj/usr/src/sys/ 
> SLEIPNER_7  i386
>
> exerpt from dmesg:
> CPU: Dual Core AMD Opteron(tm) Processor 165    (1808.34-MHz 686- 
> class CPU)
>  Origin = "AuthenticAMD"  Id = 0x20f32  Stepping = 2
>
> 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=0x1<SSE3>
>  AMD Features=0xe2500800<SYSCALL,NX,MMX+,FFXSR,LM,3DNow!+,3DNow!>
>  AMD Features2=0x3<LAHF,CMP>
>  Cores per package: 2
> ...
> k8temp0: <AMD K8 Thermal Sensors> on hostb3
> k8temp0: 44 41 44 41
>
>
> # sysctl dev.k8temp
> dev.k8temp.0.%desc: AMD K8 Thermal Sensors
> dev.k8temp.0.%driver: k8temp
> dev.k8temp.0.%parent: hostb3
> dev.k8temp.0.sensor0.core0: 44
> dev.k8temp.0.sensor0.core1: 40
> dev.k8temp.0.sensor1.core0: 45
> dev.k8temp.0.sensor1.core1: 45
>
> It's tested in i386 now, but I can provide data for amd64 using the  
> same
> cpu if you want.

Well, it should work as well too.

> Thanks for your work! It's a very handy feature.


Thanks for the testing. :-)

Regards.
--
Rui Paulo