Date: Sun, 07 Sep 2008 09:36:03 +0900 From: "G. Otsuji" <annona2@gmail.com> To: FreeBSD Current <freebsd-current@freebsd.org> Subject: AMD Family 10h cpufreq driver Message-ID: <200809070036.m870a3NC001532@softbank219001162114.bbtec.net>
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--Multipart_Sun_Sep__7_09:36:03_2008-1 Content-Type: text/plain; charset=US-ASCII Hello , I have AMD Phenom x4 9850 BE cpu ,but there was no sysctl oid dev.cpu.0.freq_levels. so I read the BKDG (bios and kernel developer guide for AMD Family 10h) and finally I reached some result. I wrote pstate.c cpufreq driver module. attached in this mail. I have tested this module on i386 current/stable, amd64 current/stable. and make -j20 buildworld can be done with running powerd. This module has capability to down clock to 400MHz. but It's slow, so echo "debug.cpufreq.lowest=1200" >>/boot/loader.conf. and the reuslt is as follows. $ sysctl dev.cpu.0.freq_levels dev.cpu.0.freq_levels: 2500/-1 2400/-1 2300/-1 2200/-1 2100/-1 2000/-1 1900/-1 1800/-1 1700/-1 1600/-1 1500/-1 1400/-1 1300/-1 1200/-1 I have enjoying this module in a few days but It's OK. AMD Family 10h cpu_id's are 100f23,100f2a,100f22. I don't have Opteron 13XX 23XX 83XX,Phenom X3, and other Phenom X4,And MP system. if you have these cpu's , i would like you to try this module. feel free to contact me. Sincerely, G. Otsuji <annona2@gmail.com> --Multipart_Sun_Sep__7_09:36:03_2008-1 Content-Type: application/octet-stream Content-Disposition: attachment; filename="pstate.c" Content-Transfer-Encoding: base64 LyotCiAqIENvcHlyaWdodCAoYykgMjAwOCBHZW4gT3RzdWppCiAqIEFsbCByaWdodHMgcmVzZXJ2 ZWQuCiAqCiAqIFJlZGlzdHJpYnV0aW9uIGFuZCB1c2UgaW4gc291cmNlIGFuZCBiaW5hcnkgZm9y bXMsIHdpdGggb3Igd2l0aG91dAogKiBtb2RpZmljYXRpb24sIGFyZSBwZXJtaXR0ZWQgcHJvdmlk aW5nIHRoYXQgdGhlIGZvbGxvd2luZyBjb25kaXRpb25zCiAqIGFyZSBtZXQ6CiAqIDEuIFJlZGlz dHJpYnV0aW9ucyBvZiBzb3VyY2UgY29kZSBtdXN0IHJldGFpbiB0aGUgYWJvdmUgY29weXJpZ2h0 CiAqICAgIG5vdGljZSwgdGhpcyBsaXN0IG9mIGNvbmRpdGlvbnMgYW5kIHRoZSBmb2xsb3dpbmcg ZGlzY2xhaW1lci4KICogMi4gUmVkaXN0cmlidXRpb25zIGluIGJpbmFyeSBmb3JtIG11c3QgcmVw cm9kdWNlIHRoZSBhYm92ZSBjb3B5cmlnaHQKICogICAgbm90aWNlLCB0aGlzIGxpc3Qgb2YgY29u ZGl0aW9ucyBhbmQgdGhlIGZvbGxvd2luZyBkaXNjbGFpbWVyIGluIHRoZQogKiAgICBkb2N1bWVu dGF0aW9uIGFuZC9vciBvdGhlciBtYXRlcmlhbHMgcHJvdmlkZWQgd2l0aCB0aGUgZGlzdHJpYnV0 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