PIIXPM(4) | Device Drivers Manual | PIIXPM(4)

# NAME

`piixpm` — Intel PIIX and compatible Power Management controller

# SYNOPSIS

`piixpm* at pci? dev ? function ?`
`iic* at piixpm?`

# DESCRIPTION

The `piixpm` driver provides support for the Intel PIIX and compatible Power Management controller. Only the SMBus host interface is supported and can be used with the iic(4) framework.

Supported chipsets:

- ATI SB200, SB300, SB400, SB600, SB700, SB800
- Intel 82371AB (PIIX4), 82440MX
- Serverworks OSB4, OSB5, OSB6, HT1000SB
- AMD FCHs (HUDSON, BOLTON and KERNCZ)

# SEE ALSO

iic(4), intro(4), pci(4)

# HISTORY

The `piixpm` driver first appeared in OpenBSD 3.9 and then in NetBSD 4.0.

# AUTHORS

The current `piixpm` driver was written by Alexander Yurchenko <grange@openbsd.org>. It was ported to NetBSD by Jared D. McNeill <jmcneill@netbsd.org>.

# BUGS

The driver doesn't support I2C commands with a data buffer size of more than 2 bytes.

January 14, 2020 | NetBSD 11.0