LXR linux/include/net/irda/ircomm

   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 */
  63struct 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
 120void ircomm_tty_start(struct tty_struct *tty);
 121void ircomm_tty_check_modem_status(struct ircomm_tty_cb *self);
 122
 123extern int ircomm_tty_tiocmget(struct tty_struct *tty, struct file *file);
 124extern int ircomm_tty_tiocmset(struct tty_struct *tty, struct file *file,
 125                               unsigned int set, unsigned int clear);
 126extern int ircomm_tty_ioctl(struct tty_struct *tty, struct file *file, 
 127                            unsigned int cmd, unsigned long arg);
 128extern void ircomm_tty_set_termios(struct tty_struct *tty, 
 129                                   struct ktermios *old_termios);
 130
 131#endif
 132
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