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 */
56struct 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
103void ircomm_tty_start(struct tty_struct *tty);
104void ircomm_tty_check_modem_status(struct ircomm_tty_cb *self);
105
106int ircomm_tty_tiocmget(struct tty_struct *tty);
107int ircomm_tty_tiocmset(struct tty_struct *tty, unsigned int set,
108			unsigned int clear);
109int ircomm_tty_ioctl(struct tty_struct *tty, unsigned int cmd,
110		     unsigned long arg);
111void ircomm_tty_set_termios(struct tty_struct *tty,
112			    struct ktermios *old_termios);
113
114#endif
115
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