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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