dcons(4) [freebsd man page]

DCONS(4)						   BSD Kernel Interfaces Manual 						  DCONS(4)

NAME

     dcons -- dumb console device driver

SYNOPSIS

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

	   options GDB
	   device firewire
	   device dcons

     Alternatively, to load the driver as a module at boot time, place the following line in your kernel configuration file:

	   options GDB

     and in loader.conf(5):

	   dcons_load="YES"

DESCRIPTION

     The dcons device is a simple console device which just reads from and writes to an allocated buffer for input and output respectively.  It is
     of no use by itself and it is supposed that the buffer is accessed via a bus like firewire(4) or kvm(3) for interaction.

     The buffer consists of 4 channels.  There are 2 ports, one for the console TTY and another is GDB port, then each port has an input channel
     and an output channel.

FILES

     /dev/dcons
     /etc/ttys

EXAMPLES

     If you want to run getty(8) on dcons, insert the following line into ttys(5) and send a HUP signal to init(8) using kill(1).

	   dcons   "/usr/libexec/getty std.9600"   vt100   on  secure

     Once the fwohci(4) device is initialized to allow physical access, the buffer can be accessed from another host via a firewire(4) bus using
     the dconschat(8) application.  See dconschat(8) for more details.

     If you want to use dcons(4) as a gdb(1) port, add the following line into loader.conf(5):

	   dcons_gdb="1"

SEE ALSO

     dcons_crom(4), ddb(4), firewire(4), fwohci(4), gdb(4), ttys(5), conscontrol(8), dconschat(8), fwcontrol(8)

AUTHORS

     Hidetoshi Shimokawa <simokawa@FreeBSD.org>

BUGS

     This driver is currently under development.

BSD
								 January 26, 2008							       BSD

FWOHCI(4)						   BSD Kernel Interfaces Manual 						 FWOHCI(4)

NAME

     fwohci -- OHCI FireWire chipset device driver

SYNOPSIS

     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 loader.conf(5):

	   firewire_load="YES"

     To disable physical access (see BUGS section for detail), put the following line in loader.conf(5):

	   hw.firewire.phydma_enable=0

HARDWARE

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

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

SEE ALSO

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

HISTORY

     The fwohci device driver first appeared in FreeBSD 5.0.

AUTHORS

     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 mem-
     ory 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.

BSD
								   March 3, 2008							       BSD