ENVCTRL(4)

NAME
envctrl - Sun Ultra Enterprise 450 environmental monitoring

SYNOPSIS
envctrl* at ebus?

DESCRIPTION
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):
Sensor | Units | Description
CPU0 | degC | Processor 0 temperature
CPU1 | degC | Processor 1 temperature
CPU2 | degC | Processor 2 temperature
CPU3 | degC | Processor 3 temperature
PS0 | degC | Power supply 0 temperature
PS1 | degC | Power supply 1 temperature
PS2 | degC | Power supply 2 temperature
ambient | degC | Ambient temperature
cpufan voltage | V | Voltage used to drive processor fans
psfan voltage | V | Voltage used to drive power supply fans
ps failed | count | number of failed power supplies
fans failed | count | number of failed fans

SEE ALSO
envsys(4), envstat(8)

HISTORY
The envctrl driver first appeared in NetBSD 5.0.

AUTHORS
Tobias Nygren <tnn@NetBSD.org>

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

Environmental interrupts are not supported.