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, see <http://www.gnu.org/licenses/>.
  26  *
  27  ********************************************************************/
  28
  29 #ifndef IRCOMM_TTY_H
  30 #define IRCOMM_TTY_H
  31
  32 #include <linux/serial.h>
  33 #include <linux/termios.h>
  34 #include <linux/timer.h>
  35 #include <linux/tty.h>          /* struct tty_struct */
  36
  37 #include <net/irda/irias_object.h>
  38 #include <net/irda/ircomm_core.h>
  39 #include <net/irda/ircomm_param.h>
  40
  41 #define IRCOMM_TTY_PORTS 32
  42 #define IRCOMM_TTY_MAGIC 0x3432
  43 #define IRCOMM_TTY_MAJOR 161
  44 #define IRCOMM_TTY_MINOR 0
  45
  46 /* This is used as an initial value to max_header_size before the proper
  47  * value is filled in (5 for ttp, 4 for lmp). This allow us to detect
  48  * the state of the underlying connection. - Jean II */
  49 #define IRCOMM_TTY_HDR_UNINITIALISED    16
  50 /* Same for payload size. See qos.c for the smallest max data size */
  51 #define IRCOMM_TTY_DATA_UNINITIALISED   (64 - IRCOMM_TTY_HDR_UNINITIALISED)
  52
  53 /*
  54  * IrCOMM TTY driver state
  55  */
  56 struct ircomm_tty_cb {
  57         irda_queue_t queue;            /* Must be first */
  58         struct tty_port port;
  59         magic_t magic;
  60
  61         int state;                /* Connect state */
  62
  63         struct ircomm_cb *ircomm; /* IrCOMM layer instance */
  64
  65         struct sk_buff *tx_skb;   /* Transmit buffer */
  66         struct sk_buff *ctrl_skb; /* Control data buffer */
  67
  68         /* Parameters */
  69         struct ircomm_params settings;
  70
  71         __u8 service_type;        /* The service that we support */
  72         int client;               /* True if we are a client */
  73         LOCAL_FLOW flow;          /* IrTTP flow status */
  74
  75         int line;
  76
  77         __u8 dlsap_sel;
  78         __u8 slsap_sel;
  79
  80         __u32 saddr;
  81         __u32 daddr;
  82
  83         __u32 max_data_size;   /* Max data we can transmit in one packet */
  84         __u32 max_header_size; /* The amount of header space we must reserve */
  85         __u32 tx_data_size;     /* Max data size of current tx_skb */
  86
  87         struct iriap_cb *iriap; /* Instance used for querying remote IAS */
  88         struct ias_object* obj;
  89         void *skey;
  90         void *ckey;
  91
  92         struct timer_list watchdog_timer;
  93         struct work_struct  tqueue;
  94
  95         /* Protect concurent access to :
  96          *      o self->ctrl_skb
  97          *      o self->tx_skb
  98          * Maybe other things may gain to be protected as well...
  99          * Jean II */
 100         spinlock_t spinlock;
 101 };
 102
 103 void ircomm_tty_start(struct tty_struct *tty);
 104 void ircomm_tty_check_modem_status(struct ircomm_tty_cb *self);
 105
 106 int ircomm_tty_tiocmget(struct tty_struct *tty);
 107 int ircomm_tty_tiocmset(struct tty_struct *tty, unsigned int set,
 108                         unsigned int clear);
 109 int ircomm_tty_ioctl(struct tty_struct *tty, unsigned int cmd,
 110                      unsigned long arg);
 111 void ircomm_tty_set_termios(struct tty_struct *tty,
 112                             struct ktermios *old_termios);
 113
 114 #endif
 115
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