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NAME

     ng_bt3c -- Netgraph node type that is also a 3Com Bluetooth PC card
     driver

SYNOPSIS

     #include <sys/types.h>
     #include <netgraph/bluetooth/include/ng_bt3c.h>

DESCRIPTION

     The btccc node type is both a persistent Netgraph node type and a driver
     for the 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.

     In order to use the card one MUST download the firmware first.  Due to
     copyright issues the firmware cannot be provided with this 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 the firmware into the card, use bt3cfw(8).  I am
     using the original firmware that came with the card on CD-ROM.

           MD5 (BT3CPCC.BIN) = 36170fda56ea9fdbf1702c966f8a97f1

     The node has a single hook called 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 hook are
     transmitted out.  No modification to the data is performed in either
     direction.

HARDWARE

     The ng_bt3c driver provides support for the 3Com/HP 3CRWB6096-A PCCARD
     bluetooth adapter.

HOOKS

     This node type supports the following hooks:

     hook    single HCI frame contained in single mbuf structure.

CONTROL MESSAGES

     This node type supports the generic control messages, plus the following:

     NGM_BT3C_NODE_GET_STATE
             Returns the current receiving state for the node.

     NGM_BT3C_NODE_GET_DEBUG
             Returns an integer containing the current debug level for the
             node.

     NGM_BT3C_NODE_SET_DEBUG
             This command takes an integer argument and sets the current debug
             level for the node.

     NGM_BT3C_NODE_GET_QLEN
             This command takes a parameter that specifies queue number and
             returns the current length of the queue for the node.

     NGM_BT3C_NODE_SET_QLEN
             This command takes two parameters that specify the queue number
             and the maximum length of the queue and sets the maximum length
             of the queue for the node.

     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.

     NGM_BT3C_NODE_RESET_STAT
             Reset all statistic counters to zero.

     NGM_BT3C_NODE_DOWNLOAD_FIRMWARE
             Download card firmware.

SHUTDOWN

     This node shuts down when the corresponding card is un-plugged.

SEE ALSO

     cardbus(4), netgraph(4), pccbb(4), pcic(4), pccard.conf(5), bt3cfw(8),
     ngctl(8)

HISTORY

     The btccc node type was implemented in FreeBSD 5.0.

AUTHORS

     Maksim Yevmenkin <m_evmenkin@yahoo.com>

BUGS

     The driver is based on information obtained from Jose Orlando Pereira
     <jop@di.uminho.pt> and disassembled the W2K driver.