March 26, 2008 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

### SEE ALSO

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

### HISTORY

The piixpm driver first appeared in OpenBSD3.9 and then in NetBSD4.0.

### 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.