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intpm (4)
>> intpm (4) ( FreeBSD man: Специальные файлы /dev/* )
BSD mandoc
NAME
intpm
- Intel PIIX4 Power Management controller driver
SYNOPSIS
device smbusdevice smbdevice intpm
DESCRIPTION
This driver provides access to
Intel PIIX4 PCI Controller function 3
Power management controller.
Currently, only smbus controller
function is implemented.
But it also have bus idle monitoring function.
It
will display mapped I/O address for bus monitoring function when attaching.
This device requires IRQ 9 exclusively.
To use this, you should enable
ACPI function in BIOS configuration, or PnP mechanism assigns conflicted
IRQ for PnP ISA card.
And do not use IRQ 9 for Non-PnP ISA cards.