Intel PIIX SMBus controller
piixpm* at pci?
iic* at 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
- AMD Hudson-2
- ATI SB200, SB300, SB400, SB600, SB700, SB800
- Intel 82371AB (PIIX4), 82440MX
- ServerWorks OSB4, CSB5, CSB6, HT-1000, HT-1100
- SMSC Victory66
driver first appeared in
to provide support for the power
management (ACPI) timer. In OpenBSD 3.9
management support was dropped in favor of
SMBus functionality was added.
driver was written by
The driver doesn't support I2C commands with a data buffer size of more than 2