drivers/bluetooth/hci_uart.h

   1 /*
   2  *
   3  *  Bluetooth HCI UART driver
   4  *
   5  *  Copyright (C) 2000-2001  Qualcomm Incorporated
   6  *  Copyright (C) 2002-2003  Maxim Krasnyansky <maxk@qualcomm.com>
   7  *  Copyright (C) 2004-2005  Marcel Holtmann <marcel@holtmann.org>
   8  *
   9  *
  10  *  This program is free software; you can redistribute it and/or modify
  11  *  it under the terms of the GNU General Public License as published by
  12  *  the Free Software Foundation; either version 2 of the License, or
  13  *  (at your option) any later version.
  14  *
  15  *  This program is distributed in the hope that it will be useful,
  16  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  *  GNU General Public License for more details.
  19  *
  20  *  You should have received a copy of the GNU General Public License
  21  *  along with this program; if not, write to the Free Software
  22  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  23  *
  24  */
  25
  26 #ifndef N_HCI
  27 #define N_HCI   15
  28 #endif
  29
  30 /* Ioctls */
  31 #define HCIUARTSETPROTO         _IOW('U', 200, int)
  32 #define HCIUARTGETPROTO         _IOR('U', 201, int)
  33 #define HCIUARTGETDEVICE        _IOR('U', 202, int)
  34 #define HCIUARTSETFLAGS         _IOW('U', 203, int)
  35 #define HCIUARTGETFLAGS         _IOR('U', 204, int)
  36
  37 /* UART protocols */
  38 #define HCI_UART_MAX_PROTO      8
  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 #define HCI_UART_LL     4
  45 #define HCI_UART_ATH3K  5
  46 #define HCI_UART_INTEL  6
  47 #define HCI_UART_BCM    7
  48
  49 #define HCI_UART_RAW_DEVICE     0
  50 #define HCI_UART_RESET_ON_INIT  1
  51 #define HCI_UART_CREATE_AMP     2
  52 #define HCI_UART_INIT_PENDING   3
  53 #define HCI_UART_EXT_CONFIG     4
  54 #define HCI_UART_VND_DETECT     5
  55
  56 struct hci_uart;
  57
  58 struct hci_uart_proto {
  59         unsigned int id;
  60         const char *name;
  61         unsigned int init_speed;
  62         unsigned int oper_speed;
  63         int (*open)(struct hci_uart *hu);
  64         int (*close)(struct hci_uart *hu);
  65         int (*flush)(struct hci_uart *hu);
  66         int (*setup)(struct hci_uart *hu);
  67         int (*set_baudrate)(struct hci_uart *hu, unsigned int speed);
  68         int (*recv)(struct hci_uart *hu, const void *data, int len);
  69         int (*enqueue)(struct hci_uart *hu, struct sk_buff *skb);
  70         struct sk_buff *(*dequeue)(struct hci_uart *hu);
  71 };
  72
  73 struct hci_uart {
  74         struct tty_struct       *tty;
  75         struct hci_dev          *hdev;
  76         unsigned long           flags;
  77         unsigned long           hdev_flags;
  78
  79         struct work_struct      init_ready;
  80         struct work_struct      write_work;
  81
  82         const struct hci_uart_proto *proto;
  83         void                    *priv;
  84
  85         struct sk_buff          *tx_skb;
  86         unsigned long           tx_state;
  87         spinlock_t              rx_lock;
  88
  89         unsigned int init_speed;
  90         unsigned int oper_speed;
  91 };
  92
  93 /* HCI_UART proto flag bits */
  94 #define HCI_UART_PROTO_SET      0
  95 #define HCI_UART_REGISTERED     1
  96
  97 /* TX states  */
  98 #define HCI_UART_SENDING        1
  99 #define HCI_UART_TX_WAKEUP      2
 100
 101 int hci_uart_register_proto(const struct hci_uart_proto *p);
 102 int hci_uart_unregister_proto(const struct hci_uart_proto *p);
 103 int hci_uart_tx_wakeup(struct hci_uart *hu);
 104 int hci_uart_init_ready(struct hci_uart *hu);
 105 void hci_uart_init_tty(struct hci_uart *hu);
 106 void hci_uart_set_baudrate(struct hci_uart *hu, unsigned int speed);
 107 void hci_uart_set_flow_control(struct hci_uart *hu, bool enable);
 108 void hci_uart_set_speeds(struct hci_uart *hu, unsigned int init_speed,
 109                          unsigned int oper_speed);
 110
 111 #ifdef CONFIG_BT_HCIUART_H4
 112 int h4_init(void);
 113 int h4_deinit(void);
 114
 115 struct h4_recv_pkt {
 116         u8  type;       /* Packet type */
 117         u8  hlen;       /* Header length */
 118         u8  loff;       /* Data length offset in header */
 119         u8  lsize;      /* Data length field size */
 120         u16 maxlen;     /* Max overall packet length */
 121         int (*recv)(struct hci_dev *hdev, struct sk_buff *skb);
 122 };
 123
 124 #define H4_RECV_ACL \
 125         .type = HCI_ACLDATA_PKT, \
 126         .hlen = HCI_ACL_HDR_SIZE, \
 127         .loff = 2, \
 128         .lsize = 2, \
 129         .maxlen = HCI_MAX_FRAME_SIZE \
 130
 131 #define H4_RECV_SCO \
 132         .type = HCI_SCODATA_PKT, \
 133         .hlen = HCI_SCO_HDR_SIZE, \
 134         .loff = 2, \
 135         .lsize = 1, \
 136         .maxlen = HCI_MAX_SCO_SIZE
 137
 138 #define H4_RECV_EVENT \
 139         .type = HCI_EVENT_PKT, \
 140         .hlen = HCI_EVENT_HDR_SIZE, \
 141         .loff = 1, \
 142         .lsize = 1, \
 143         .maxlen = HCI_MAX_EVENT_SIZE
 144
 145 struct sk_buff *h4_recv_buf(struct hci_dev *hdev, struct sk_buff *skb,
 146                             const unsigned char *buffer, int count,
 147                             const struct h4_recv_pkt *pkts, int pkts_count);
 148 #endif
 149
 150 #ifdef CONFIG_BT_HCIUART_BCSP
 151 int bcsp_init(void);
 152 int bcsp_deinit(void);
 153 #endif
 154
 155 #ifdef CONFIG_BT_HCIUART_LL
 156 int ll_init(void);
 157 int ll_deinit(void);
 158 #endif
 159
 160 #ifdef CONFIG_BT_HCIUART_ATH3K
 161 int ath_init(void);
 162 int ath_deinit(void);
 163 #endif
 164
 165 #ifdef CONFIG_BT_HCIUART_3WIRE
 166 int h5_init(void);
 167 int h5_deinit(void);
 168 #endif
 169
 170 #ifdef CONFIG_BT_HCIUART_BCM
 171 int bcm_init(void);
 172 int bcm_deinit(void);
 173 #endif