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     fwohci — OHCI FireWire chipset device driver


     To compile this driver into the kernel, place the following line in your kernel
     configuration file:

           device firewire

     Alternatively, to load the driver as a module at boot time, place the following line in


     To disable physical access (see BUGS section for detail), put the following line in



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

        Adaptec AHA-894x/AIC-5800
        Apple Pangea
        Apple UniNorth
        Intel 82372FB
        IOGEAR GUF320
        Lucent / Agere FW322/323
        NEC uPD72861
        NEC uPD72870
        NEC uPD72871/2
        NEC uPD72873
        NEC uPD72874
        National Semiconductor CS4210
        Ricoh R5C551
        Ricoh R5C552
        Sony CX3022
        Sony i.LINK (CXD3222)
        Sun PCIO-2 (RIO 1394)
        Texas Instruments PCI4410A
        Texas Instruments PCI4450
        Texas Instruments PCI4451
        Texas Instruments TSB12LV22
        Texas Instruments TSB12LV23
        Texas Instruments TSB12LV26
        Texas Instruments TSB43AA22
        Texas Instruments TSB43AB21/A/AI/A-EP
        Texas Instruments TSB43AB22/A
        Texas Instruments TSB43AB23
        Texas Instruments TSB82AA2
        VIA Fire II (VT6306)


     firewire(4), fwe(4), fwip(4), sbp(4), fwcontrol(8), kldload(8)


     The fwohci device driver first appeared in FreeBSD 5.0.


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


     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.