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);
124extern int ircomm_tty_tiocmset(struct tty_struct *tty,
125			       unsigned int set, unsigned int clear);
126extern int ircomm_tty_ioctl(struct tty_struct *tty, 
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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