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+.\" ng_bt3c.4
+.\" 
+.\" Copyright (c) 2001-2002 Maksim Yevmenkin <m_evmenkin@yahoo.com>
+.\" All rights reserved.
+.\" 
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 
+.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\" 
+.\" $Id: ng_bt3c.4,v 1.3 2002/11/12 17:03:58 max Exp $
+.\" $FreeBSD$
+.Dd June 14, 2002
+.Dt NG_BT3C 4
+.Os
+.Sh NAME
+.Nm BTCCC
+.Nd Netgraph node type that is also a 3Com Bluetooth PC card driver
+.Sh SYNOPSIS
+.In sys/types.h
+.In ng_bt3c.h
+.Sh DESCRIPTION
+The
+.Nm BTCCC
+node type is both a persistent Netgraph node type and a driver for
+3Com Bluetooth PC card (3CRWB6096-HP). It implements a Bluetooth HCI
+UART transport layer as per chapter H4 of the Bluetooth Specification
+Book v1.1. A new node is created when the card is plugged.
+.Pp
+In order to use the card one
+.Em MUST
+download firmware first. Due to copyright issues I will no longer
+provide firmware with the driver. The firmware can be obtained
+from the Windows driver package that can be downloaded from the 3COM web 
+site at no charge. The firmware name is BT3CPCC.BIN. To load firmware 
+info the card use
+.Xr bt3cfw 8 .
+I'm using original firmware that came with the card on CD-ROM.
+.Bd -literal -offset indent
+MD5 (BT3CPCC.BIN) = 36170fda56ea9fdbf1702c966f8a97f1
+.Ed
+.Pp
+For OLDCARD systems the entry in 
+.Xr pccard.conf 5
+might look like this
+.Bd -literal -offset indent
+# 3Com 3CRWB60-A Bluetooth PC Card
+card "3COM" "3CRWB60-A" "Bluetooth PC Card"
+        config	auto	"btccc" ?
+	insert	/usr/sbin/bt3cfw -n $device -f /etc/BT3CPCC.bin
+.Ed
+.Pp
+Do not forget to load module and SIGHUP
+.Xr pccardd 8 .
+.Pp
+The node has a single hook called
+.Dv hook .
+Incoming bytes received on the device are re-assembled into HCI frames
+(according to the length). Full HCI frames are sent out on the hook. HCI 
+frames received on
+.Dv hook
+are transmitted out. No modification to the data is performed in 
+either direction.
+.Sh HOOKS
+This node type supports the following hooks:
+.Pp
+.Bl -tag -width foobar
+.It Dv hook
+single HCI frame contained in single
+.Dv mbuf
+structure.
+.El
+.Sh CONTROL MESSAGES
+This node type supports the generic control messages, plus the following:
+.Bl -tag -width foo
+.It Dv NGM_BT3C_NODE_GET_STATE
+Returns current receiving state for the node.
+.It Dv NGM_BT3C_NODE_GET_DEBUG
+Returns an integer containing the current debug level for the node.
+.It Dv NGM_BT3C_NODE_SET_DEBUG
+This command takes an integer argument and sets current debug level
+for the node.
+.It Dv NGM_BT3C_NODE_GET_QLEN
+This command takes a parameter that specifies queue number and returns 
+current length of the queue for the node.
+.It Dv NGM_BT3C_NODE_SET_QLEN
+This command takes two parameters that specify queue number and and 
+maximum length of the queue and sets maximum length of the queue for 
+the node.
+.It Dv NGM_BT3C_NODE_GET_STAT
+Returns various statistic information for the node, such as: number of 
+bytes (frames) sent, number of bytes (frames) received and number of 
+input (output) errors.
+.It Dv NGM_BT3C_NODE_RESET_STAT
+Reset all statistic counters to zero.
+.It Dv NGM_BT3C_NODE_DOWNLOAD_FIRMWARE
+Download card firmware.
+.El
+.Sh SHUTDOWN
+This node shuts down when the corresponding card is un-plugged.
+.Sh BUGS
+The driver is based on information obrained from Jose Orlando Pereira 
+<jop@di.uminho.pt> and disassembled W2K driver.
+.Sh SEE ALSO
+.Xr cardbus 4 ,
+.Xr pccbb 4 ,
+.Xr pcic 4 ,
+.Xr pccardc 8 ,
+.Xr pccardd 8 ,
+.Xr pccard.conf 5 ,
+.Xr netgraph 4 ,
+.Xr ngctl 8 ,
+.Xr bt3cfw 8
+.Sh HISTORY
+The
+.Nm BTCCC
+node type was implemented in
+.Fx 5.0 .
+.Sh AUTHORS
+.An Maksim Yevmenkin Aq m_evmenkin@yahoo.com