LM(4) | Device Drivers Manual | LM(4) |
lm
—
lm0 at isa? port 0x290
lm1 at isa? port 0x280
lm2 at isa? port 0x310
lm* at iic?
lm* at wbsio?
lm
driver provides support for the National
Semiconductor LM78/79/81 hardware monitors and register compatible chips to be
used with the sysctl(8) interface.
The original LM78 hardware monitor supports 11 sensors:
Sensor | Units | Typical Use |
IN0 |
uV DC | Core voltage |
IN1 |
uV DC | Unknown |
IN2 |
uV DC | +3.3V |
IN3 |
uV DC | +5V |
IN4 |
uV DC | +12V |
IN5 |
uV DC | -12V |
IN6 |
uV DC | -5V |
Temp |
uK | Motherboard Temperature |
Fan0 |
RPM | Fan |
Fan1 |
RPM | Chassis Fan |
Fan2 |
RPM | Fan |
For other devices, sensors' names and numbers will be different.
lm
driver include:
Some devices can attach to both
iic(4) and
isa(4); others can only attach to either one
or the other. If the lm
driver detects a device
attaching to both iic(4) and
isa(4), it will detach the device from
iic(4).
lm
driver first appeared in NetBSD
1.5; OpenBSD support was added in
OpenBSD 3.4.
lm
driver was written by Bill
Squier and ported to OpenBSD 3.4 by
Alexander Yurchenko
<grange@openbsd.org>.
The driver was largely rewritten for OpenBSD 3.9 by
Mark Kettenis
<kettenis@openbsd.org>.
There are currently no known pnpbios IDs assigned to LM chips.
This driver attaches to the Winbond W83791SD chip even though that chip does not have any sensors.
July 16, 2013 | OpenBSD-current |