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      12
  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 #define HCI_UART_QCA    8
  49 #define HCI_UART_AG6XX  9
  50 #define HCI_UART_NOKIA  10
  51 #define HCI_UART_MRVL   11
  52
  53 #define HCI_UART_RAW_DEVICE     0
  54 #define HCI_UART_RESET_ON_INIT  1
  55 #define HCI_UART_CREATE_AMP     2
  56 #define HCI_UART_INIT_PENDING   3
  57 #define HCI_UART_EXT_CONFIG     4
  58 #define HCI_UART_VND_DETECT     5
  59
  60 struct hci_uart;
  61 struct serdev_device;
  62
  63 struct hci_uart_proto {
  64         unsigned int id;
  65         const char *name;
  66         unsigned int manufacturer;
  67         unsigned int init_speed;
  68         unsigned int oper_speed;
  69         int (*open)(struct hci_uart *hu);
  70         int (*close)(struct hci_uart *hu);
  71         int (*flush)(struct hci_uart *hu);
  72         int (*setup)(struct hci_uart *hu);
  73         int (*set_baudrate)(struct hci_uart *hu, unsigned int speed);
  74         int (*recv)(struct hci_uart *hu, const void *data, int len);
  75         int (*enqueue)(struct hci_uart *hu, struct sk_buff *skb);
  76         struct sk_buff *(*dequeue)(struct hci_uart *hu);
  77 };
  78
  79 struct hci_uart {
  80         struct tty_struct       *tty;
  81         struct serdev_device    *serdev;
  82         struct hci_dev          *hdev;
  83         unsigned long           flags;
  84         unsigned long           hdev_flags;
  85
  86         struct work_struct      init_ready;
  87         struct work_struct      write_work;
  88
  89         const struct hci_uart_proto *proto;
  90         struct percpu_rw_semaphore proto_lock;  /* Stop work for proto close */
  91         void                    *priv;
  92
  93         struct sk_buff          *tx_skb;
  94         unsigned long           tx_state;
  95
  96         unsigned int init_speed;
  97         unsigned int oper_speed;
  98
  99         u8                      alignment;
 100         u8                      padding;
 101 };
 102
 103 /* HCI_UART proto flag bits */
 104 #define HCI_UART_PROTO_SET      0
 105 #define HCI_UART_REGISTERED     1
 106 #define HCI_UART_PROTO_READY    2
 107
 108 /* TX states  */
 109 #define HCI_UART_SENDING        1
 110 #define HCI_UART_TX_WAKEUP      2
 111
 112 int hci_uart_register_proto(const struct hci_uart_proto *p);
 113 int hci_uart_unregister_proto(const struct hci_uart_proto *p);
 114 int hci_uart_register_device(struct hci_uart *hu, const struct hci_uart_proto *p);
 115 void hci_uart_unregister_device(struct hci_uart *hu);
 116
 117 int hci_uart_tx_wakeup(struct hci_uart *hu);
 118 int hci_uart_init_ready(struct hci_uart *hu);
 119 void hci_uart_init_work(struct work_struct *work);
 120 void hci_uart_set_baudrate(struct hci_uart *hu, unsigned int speed);
 121 bool hci_uart_has_flow_control(struct hci_uart *hu);
 122 void hci_uart_set_flow_control(struct hci_uart *hu, bool enable);
 123 void hci_uart_set_speeds(struct hci_uart *hu, unsigned int init_speed,
 124                          unsigned int oper_speed);
 125
 126 #ifdef CONFIG_BT_HCIUART_H4
 127 int h4_init(void);
 128 int h4_deinit(void);
 129
 130 struct h4_recv_pkt {
 131         u8  type;       /* Packet type */
 132         u8  hlen;       /* Header length */
 133         u8  loff;       /* Data length offset in header */
 134         u8  lsize;      /* Data length field size */
 135         u16 maxlen;     /* Max overall packet length */
 136         int (*recv)(struct hci_dev *hdev, struct sk_buff *skb);
 137 };
 138
 139 #define H4_RECV_ACL \
 140         .type = HCI_ACLDATA_PKT, \
 141         .hlen = HCI_ACL_HDR_SIZE, \
 142         .loff = 2, \
 143         .lsize = 2, \
 144         .maxlen = HCI_MAX_FRAME_SIZE \
 145
 146 #define H4_RECV_SCO \
 147         .type = HCI_SCODATA_PKT, \
 148         .hlen = HCI_SCO_HDR_SIZE, \
 149         .loff = 2, \
 150         .lsize = 1, \
 151         .maxlen = HCI_MAX_SCO_SIZE
 152
 153 #define H4_RECV_EVENT \
 154         .type = HCI_EVENT_PKT, \
 155         .hlen = HCI_EVENT_HDR_SIZE, \
 156         .loff = 1, \
 157         .lsize = 1, \
 158         .maxlen = HCI_MAX_EVENT_SIZE
 159
 160 struct sk_buff *h4_recv_buf(struct hci_dev *hdev, struct sk_buff *skb,
 161                             const unsigned char *buffer, int count,
 162                             const struct h4_recv_pkt *pkts, int pkts_count);
 163 #endif
 164
 165 #ifdef CONFIG_BT_HCIUART_BCSP
 166 int bcsp_init(void);
 167 int bcsp_deinit(void);
 168 #endif
 169
 170 #ifdef CONFIG_BT_HCIUART_LL
 171 int ll_init(void);
 172 int ll_deinit(void);
 173 #endif
 174
 175 #ifdef CONFIG_BT_HCIUART_ATH3K
 176 int ath_init(void);
 177 int ath_deinit(void);
 178 #endif
 179
 180 #ifdef CONFIG_BT_HCIUART_3WIRE
 181 int h5_init(void);
 182 int h5_deinit(void);
 183 #endif
 184
 185 #ifdef CONFIG_BT_HCIUART_INTEL
 186 int intel_init(void);
 187 int intel_deinit(void);
 188 #endif
 189
 190 #ifdef CONFIG_BT_HCIUART_BCM
 191 int bcm_init(void);
 192 int bcm_deinit(void);
 193 #endif
 194
 195 #ifdef CONFIG_BT_HCIUART_QCA
 196 int qca_init(void);
 197 int qca_deinit(void);
 198 #endif
 199
 200 #ifdef CONFIG_BT_HCIUART_AG6XX
 201 int ag6xx_init(void);
 202 int ag6xx_deinit(void);
 203 #endif
 204
 205 #ifdef CONFIG_BT_HCIUART_MRVL
 206 int mrvl_init(void);
 207 int mrvl_deinit(void);
 208 #endif