ENVCTRL(4)          NetBSD/sparc64 Kernel Interfaces Manual         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.

NetBSD 5.0_STABLE               April 14, 2007               NetBSD 5.0_STABLE
