drivers/bluetooth/hci_uart.h

   1 /*
   2    BlueZ - Bluetooth protocol stack for Linux
   3    Copyright (C) 2000-2001 Qualcomm Incorporated
   4
   5    Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License version 2 as
   9    published by the Free Software Foundation;
  10
  11    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  12    OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  13    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
  14    IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
  15    CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
  16    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  17    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  18    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  19
  20    ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
  21    COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
  22    SOFTWARE IS DISCLAIMED.
  23 */
  24
  25 /*
  26  * $Id: hci_uart.h,v 1.2 2002/09/09 01:17:32 maxk Exp $
  27  */
  28
  29 #ifndef N_HCI
  30 #define N_HCI   15
  31 #endif
  32
  33 /* Ioctls */
  34 #define HCIUARTSETPROTO _IOW('U', 200, int)
  35 #define HCIUARTGETPROTO _IOR('U', 201, int)
  36
  37 /* UART protocols */
  38 #define HCI_UART_MAX_PROTO      4
  39
  40 #define HCI_UART_H4     0
  41 #define HCI_UART_BCSP   1
  42 #define HCI_UART_3WIRE  2
  43 #define HCI_UART_H4DS   3
  44
  45 #ifdef __KERNEL__
  46 struct hci_uart;
  47
  48 struct hci_uart_proto {
  49         unsigned int id;
  50         int (*open)(struct hci_uart *hu);
  51         int (*close)(struct hci_uart *hu);
  52         int (*flush)(struct hci_uart *hu);
  53         int (*recv)(struct hci_uart *hu, void *data, int len);
  54         int (*enqueue)(struct hci_uart *hu, struct sk_buff *skb);
  55         struct sk_buff *(*dequeue)(struct hci_uart *hu);
  56 };
  57
  58 struct hci_uart {
  59         struct tty_struct  *tty;
  60         struct hci_dev     *hdev;
  61         unsigned long      flags;
  62
  63         struct hci_uart_proto *proto;
  64         void               *priv;
  65
  66         struct sk_buff     *tx_skb;
  67         unsigned long      tx_state;
  68         spinlock_t         rx_lock;
  69 };
  70
  71 /* HCI_UART flag bits */
  72 #define HCI_UART_PROTO_SET              0
  73
  74 /* TX states  */
  75 #define HCI_UART_SENDING                1
  76 #define HCI_UART_TX_WAKEUP              2
  77
  78 int hci_uart_register_proto(struct hci_uart_proto *p);
  79 int hci_uart_unregister_proto(struct hci_uart_proto *p);
  80 int hci_uart_tx_wakeup(struct hci_uart *hu);
  81
  82 #endif /* __KERNEL__ */