Date: Sun, 20 Mar 2011 20:14:55 +0100 From: Torfinn Ingolfsen <torfinn.ingolfsen@broadpark.no> To: freebsd-ppc@freebsd.org Subject: Re: PowerMac G5 Quad - fan control? Message-ID: <20110320201455.e249ebea.torfinn.ingolfsen@broadpark.no> In-Reply-To: <4D7BAA4E.4070908@freebsd.org> References: <20110312151608.b3240f3d.torfinn.ingolfsen@broadpark.no> <4D7BAA4E.4070908@freebsd.org>
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On Sat, 12 Mar 2011 11:15:58 -0600 Nathan Whitehorn <nwhitehorn@freebsd.org> wrote: > Different G5 models have different thermal regulation schemes. On the > PCI-Express-based systems (e.g. the Quad), CPU temperatures are read out > by the smusat driver, and fan control is done by the smu driver. I wrote > a small daemon to manage fans on my dual-core G5 that you may want to > adapt that can be found at > http://people.freebsd.org/~nwhitehorn/powermac112-fancontrol.c I notice that my quad machine has more temperature sensors than your machine: root@kg-g5# alias temp temp='sysctl dev.smusat.0.cpu_a0_diode_temp;sysctl dev.smusat.0.cpu_a1_diode_temp;sysctl dev.smusat.1.cpu_b0_diode_temp;sysctl dev.smusat.1.cpu_b1_diode_temp' root@kg-g5# temp dev.smusat.0.cpu_a0_diode_temp: 52 dev.smusat.0.cpu_a1_diode_temp: 61 dev.smusat.1.cpu_b0_diode_temp: 61 dev.smusat.1.cpu_b1_diode_temp: 62 I wonder if there is one set for the first cpu ("a") and one set for the other ("b")? And if I should modify the fan control program to take that into account. The question then is what to do with the "backside" and "expansion_slots_intake" fans, since they aren't linked to a cpu. Ok, I really don't know if the "drive_bay_a_intake" fan is linked to a cpu either. Thoughts? -- Torfinnhome | help
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