FWOHCI(4)

NAME
fwohci - OHCI firewire chipset device driver

SYNOPSIS
kldload firewire

or

device firewire

DESCRIPTION
The fwohci driver provides support for PCI/CardBus firewire interface cards. The driver supports the following IEEE 1394 OHCI chipsets.

NEC uPD72861

Texas Instruments TSB12LV{22,23,26}, TSB43{AA22,AB22/A}, PCI44{10A,50}

Sony CX3022

VIA VT6306

Ricoh R5C552

SEE ALSO
firewire(4), fwe(4), sbp(4), fwcontrol(8), kldload(8)

HISTORY
The fwohci device driver first appeared in FreeBSD 5.0.

AUTHORS
-nosplit The fwohci device driver was written by Katsushi Kobayashi and Hidetoshi Shimokawa.

BUGS
The driver allows physical access from any nodes on the bus by default. This means that any devices on the bus can read and modify any memory space which can be accessed by an IEEE 1394 OHCI chip. It is allowed mostly for sbp(4) devices. This should be changed to allow it only for specific devices. Anyway, FireWire is a bus and not expected to be connected with un-trustable devices because a node can monitor all the traffic.