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ENVCTRL(4) Device Drivers Manual (sparc64) ENVCTRL(4)

envctrlSun Ultra Enterprise 450 environmental monitoring

envctrl* at ebus?

The envctrl driver provides thermal monitoring of processors and power supplies, as well as automatic fan regulation. The driver attaches to the SUNW,envctrl subsystem found on Ultra Enterprise 450 systems.

The following sensors can be queried with envstat(8):

degC Processor 0 temperature
degC Processor 1 temperature
degC Processor 2 temperature
degC Processor 3 temperature
degC Power supply 0 temperature
degC Power supply 1 temperature
degC Power supply 2 temperature
degC Ambient temperature
V Voltage used to drive processor fans
V Voltage used to drive power supply fans
count number of failed power supplies
count number of failed fans

envsys(4), envstat(8)

The envctrl driver first appeared in NetBSD 5.0.

Tobias Nygren <tnn@NetBSD.org>

The driver doesn't support SUNW,envctrltwo found on the Ultra Enterprise 250.

Environmental interrupts are not supported.

April 14, 2007 NetBSD-9.2