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 /*
  56  * IrCOMM TTY driver state
  57  */
  58 struct ircomm_tty_cb {
  59         irda_queue_t queue;            /* Must be first */
  60         struct tty_port port;
  61         magic_t magic;
  62
  63         int state;                /* Connect state */
  64
  65         struct ircomm_cb *ircomm; /* IrCOMM layer instance */
  66
  67         struct sk_buff *tx_skb;   /* Transmit buffer */
  68         struct sk_buff *ctrl_skb; /* Control data buffer */
  69
  70         /* Parameters */
  71         struct ircomm_params settings;
  72
  73         __u8 service_type;        /* The service that we support */
  74         int client;               /* True if we are a client */
  75         LOCAL_FLOW flow;          /* IrTTP flow status */
  76
  77         int line;
  78
  79         __u8 dlsap_sel;
  80         __u8 slsap_sel;
  81
  82         __u32 saddr;
  83         __u32 daddr;
  84
  85         __u32 max_data_size;   /* Max data we can transmit in one packet */
  86         __u32 max_header_size; /* The amount of header space we must reserve */
  87         __u32 tx_data_size;     /* Max data size of current tx_skb */
  88
  89         struct iriap_cb *iriap; /* Instance used for querying remote IAS */
  90         struct ias_object* obj;
  91         void *skey;
  92         void *ckey;
  93
  94         struct timer_list watchdog_timer;
  95         struct work_struct  tqueue;
  96
  97         /* Protect concurent access to :
  98          *      o self->ctrl_skb
  99          *      o self->tx_skb
 100          * Maybe other things may gain to be protected as well...
 101          * Jean II */
 102         spinlock_t spinlock;
 103 };
 104
 105 void ircomm_tty_start(struct tty_struct *tty);
 106 void ircomm_tty_check_modem_status(struct ircomm_tty_cb *self);
 107
 108 extern int ircomm_tty_tiocmget(struct tty_struct *tty);
 109 extern int ircomm_tty_tiocmset(struct tty_struct *tty,
 110                                unsigned int set, unsigned int clear);
 111 extern int ircomm_tty_ioctl(struct tty_struct *tty,
 112                             unsigned int cmd, unsigned long arg);
 113 extern void ircomm_tty_set_termios(struct tty_struct *tty,
 114                                    struct ktermios *old_termios);
 115
 116 #endif
 117
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