freebsd_amp_hwpstate/usr.sbin/fwcontrol/fwcontrol.8

.\" Copyright (c) 2002 Hidetoshi Shimokawa
.\" All rights reserved.
.\"
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.\" $FreeBSD$
.\"
.Dd December 30, 2002
.Dt FWCONTROL 8
.Os
.Sh NAME
.Nm fwcontrol
.Nd FireWire control utility
.Sh SYNOPSIS
.Nm
.Op Fl u Ar bus_num
.Op Fl prt
.Op Fl c Ar node
.Op Fl d Ar node
.Op Fl o Ar node
.Op Fl s Ar node
.Op Fl l Ar file
.Op Fl g Ar gap_count
.Op Fl b Ar pri_req
.Op Fl R Ar filename
.Op Fl S Ar filename
.Sh DESCRIPTION
The
.Nm
utility is designed to provide a way for users to access and control the
.Fx
FireWire subsystem.
Without options,
.Nm
will output a list of devices that are/were connected to the bus.
.Pp
The following options are available:
.Bl -tag -width indent
.It Fl u Ar bus_num
Specify the FireWire bus number to be operated.
.It Fl r
Initiate bus reset.
.It Fl t
Show the topology map.
.It Fl p
Dump phy registers.
.It Fl c Ar node
Show the configuration ROM on the node.
.It Fl d Ar node
Hex dump of the configuration ROM.
.It Fl o Ar node
Send a link-on PHY packet to the node.
.It Fl s Ar node
Write to
.Dv RESET_START
register on the node.
.It Fl l Ar file
Load hex dump file of the configuration ROM and parse it.
.It Fl g Ar gap_count
Broadcast
.Ar gap_count
by phy_config packet.
.It Fl i Ar pri_req
Set
.Dv PRIORITY_BUDGET
register on all supported nodes.
.It Fl R Ar filename
Receive DV stream and dump it to a file.
Use Ctrl-C to stop the receiving.
Some DV cameras seem not to send the stream if a bus manager exits.
If you cannot get the stream, try the following commands:
.Bd -literal -offset indent
sysctl hw.firewire.try_bmr=0
fwcontrol -r
.Ed
.Pp
The resulting file contains raw DV data excluding isochronus header
and CIP header.
It can be handled by
.Nm libdv
in the
.Fx
Ports Collection.
.It Fl S Ar filename
Send a DV file as isochronus stream.
.El
.Sh EXAMPLES
Each DV frame has fixed size and it is easy to edit those frame order.
.Pp
.Dl "fwcontrol -R original.dv"
.Pp
Receive stream.
.Pp
.Dl "dd if=original.dv of=first.dv bs=120000 count=30"
.Pp
Get first 30 frames(NTSC).
.Pp
.Dl "dd if=original.dv of=second.dv bs=120000 skip=30 count=30"
.Pp
Get second 30 frames(NTSC).
.Pp
.Dl "cat second.dv first.dv | fwcontrol -S /dev/stdin"
.Pp
Swap first and second 30 frames and send them to DV recorder.
.Pp
For PAL, replace
.Dq Li bs=120000
with
.Dq Li bs=144000 .
.Sh FILES
.Bl -tag
.It Pa /dev/fw0.0
.El
.Sh SEE ALSO
.Xr firewire 4 ,
.Xr fwe 4 ,
.Xr fwohci 4 ,
.Xr sbp 4
.Sh HISTORY
The
.Nm
utility first appeared in
.Fx 5.0 .
.Sh AUTHORS
.An Hidetoshi Shimokawa Aq simokawa@FreeBSD.org
.Sh BUGS
This utility is still under development and provided for debug purpose.