include/net/irda/ircomm_tty.h

   1 /*********************************************************************
   2  *
   3  * Filename:      ircomm_tty.h
   4  * Version:
   5  * Description:
   6  * Status:        Experimental.
   7  * Author:        Dag Brattli <dagb@cs.uit.no>
   8  * Created at:    Sun Jun  6 23:24:22 1999
   9  * Modified at:   Fri Jan 28 13:16:57 2000
  10  * Modified by:   Dag Brattli <dagb@cs.uit.no>
  11  *
  12  *     Copyright (c) 1999-2000 Dag Brattli, All Rights Reserved.
  13  *
  14  *     This program is free software; you can redistribute it and/or
  15  *     modify it under the terms of the GNU General Public License as
  16  *     published by the Free Software Foundation; either version 2 of
  17  *     the License, or (at your option) any later version.
  18  *
  19  *     This program is distributed in the hope that it will be useful,
  20  *     but WITHOUT ANY WARRANTY; without even the implied warranty of
  21  *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  22  *     GNU General Public License for more details.
  23  *
  24  *     You should have received a copy of the GNU General Public License
  25  *     along with this program; if not, write to the Free Software
  26  *     Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  27  *     MA 02111-1307 USA
  28  *
  29  ********************************************************************/
  30
  31 #ifndef IRCOMM_TTY_H
  32 #define IRCOMM_TTY_H
  33
  34 #include <linux/serial.h>
  35 #include <linux/termios.h>
  36 #include <linux/timer.h>
  37 #include <linux/tty.h>          /* struct tty_struct */
  38
  39 #include <net/irda/irias_object.h>
  40 #include <net/irda/ircomm_core.h>
  41 #include <net/irda/ircomm_param.h>
  42
  43 #define IRCOMM_TTY_PORTS 32
  44 #define IRCOMM_TTY_MAGIC 0x3432
  45 #define IRCOMM_TTY_MAJOR 161
  46 #define IRCOMM_TTY_MINOR 0
  47
  48 /* This is used as an initial value to max_header_size before the proper
  49  * value is filled in (5 for ttp, 4 for lmp). This allow us to detect
  50  * the state of the underlying connection. - Jean II */
  51 #define IRCOMM_TTY_HDR_UNINITIALISED    16
  52 /* Same for payload size. See qos.c for the smallest max data size */
  53 #define IRCOMM_TTY_DATA_UNINITIALISED   (64 - IRCOMM_TTY_HDR_UNINITIALISED)
  54
  55 /* Those are really defined in include/linux/serial.h - Jean II */
  56 #define ASYNC_B_INITIALIZED     31      /* Serial port was initialized */
  57 #define ASYNC_B_NORMAL_ACTIVE   29      /* Normal device is active */
  58 #define ASYNC_B_CLOSING         27      /* Serial port is closing */
  59
  60 /*
  61  * IrCOMM TTY driver state
  62  */
  63 struct ircomm_tty_cb {
  64         irda_queue_t queue;            /* Must be first */
  65         magic_t magic;
  66
  67         int state;                /* Connect state */
  68
  69         struct tty_struct *tty;
  70         struct ircomm_cb *ircomm; /* IrCOMM layer instance */
  71
  72         struct sk_buff *tx_skb;   /* Transmit buffer */
  73         struct sk_buff *ctrl_skb; /* Control data buffer */
  74
  75         /* Parameters */
  76         struct ircomm_params settings;
  77
  78         __u8 service_type;        /* The service that we support */
  79         int client;               /* True if we are a client */
  80         LOCAL_FLOW flow;          /* IrTTP flow status */
  81
  82         int line;
  83         unsigned long flags;
  84
  85         __u8 dlsap_sel;
  86         __u8 slsap_sel;
  87
  88         __u32 saddr;
  89         __u32 daddr;
  90
  91         __u32 max_data_size;   /* Max data we can transmit in one packet */
  92         __u32 max_header_size; /* The amount of header space we must reserve */
  93         __u32 tx_data_size;     /* Max data size of current tx_skb */
  94
  95         struct iriap_cb *iriap; /* Instance used for querying remote IAS */
  96         struct ias_object* obj;
  97         void *skey;
  98         void *ckey;
  99
 100         wait_queue_head_t open_wait;
 101         wait_queue_head_t close_wait;
 102         struct timer_list watchdog_timer;
 103         struct work_struct  tqueue;
 104
 105         unsigned short    close_delay;
 106         unsigned short    closing_wait; /* time to wait before closing */
 107
 108         int  open_count;
 109         int  blocked_open;      /* # of blocked opens */
 110
 111         /* Protect concurent access to :
 112          *      o self->open_count
 113          *      o self->ctrl_skb
 114          *      o self->tx_skb
 115          * Maybe other things may gain to be protected as well...
 116          * Jean II */
 117         spinlock_t spinlock;
 118 };
 119
 120 void ircomm_tty_start(struct tty_struct *tty);
 121 void ircomm_tty_check_modem_status(struct ircomm_tty_cb *self);
 122
 123 extern int ircomm_tty_tiocmget(struct tty_struct *tty, struct file *file);
 124 extern int ircomm_tty_tiocmset(struct tty_struct *tty, struct file *file,
 125                                unsigned int set, unsigned int clear);
 126 extern int ircomm_tty_ioctl(struct tty_struct *tty, struct file *file,
 127                             unsigned int cmd, unsigned long arg);
 128 extern void ircomm_tty_set_termios(struct tty_struct *tty,
 129                                    struct termios *old_termios);
 130 extern hashbin_t *ircomm_tty;
 131
 132 #endif
 133
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