1/*********************************************************************
2 *
3 * Filename:      timer.h
4 * Version:
5 * Description:
6 * Status:        Experimental.
7 * Author:        Dag Brattli <dagb@cs.uit.no>
8 * Created at:    Sat Aug 16 00:59:29 1997
9 * Modified at:   Thu Oct  7 12:25:24 1999
10 * Modified by:   Dag Brattli <dagb@cs.uit.no>
11 *
12 *     Copyright (c) 1997, 1998-1999 Dag Brattli <dagb@cs.uit.no>,
13 *     All Rights Reserved.
14 *     Copyright (c) 2000-2001 Jean Tourrilhes <jt@hpl.hp.com>
15 *
16 *     This program is free software; you can redistribute it and/or
17 *     modify it under the terms of the GNU General Public License as
18 *     published by the Free Software Foundation; either version 2 of
19 *     the License, or (at your option) any later version.
20 *
21 *     Neither Dag Brattli nor University of Troms� admit liability nor
22 *     provide warranty for any of this software. This material is
23 *     provided "AS-IS" and at no charge.
24 *
25 ********************************************************************/
26
27#ifndef TIMER_H
28#define TIMER_H
29
30#include <linux/netdevice.h>
31
32#include <asm/param.h>  /* for HZ */
33
34#include <net/irda/irda.h>
35#include <net/irda/irmod.h>
36#include <net/irda/irlap.h>
37#include <net/irda/irlmp.h>
38#include <net/irda/irda_device.h>
39
40/*
41 *  Timeout definitions, some defined in IrLAP p. 92
42 */
43#define POLL_TIMEOUT        (450*HZ/1000)    /* Must never exceed 500 ms */
44#define FINAL_TIMEOUT       (500*HZ/1000)    /* Must never exceed 500 ms */
45
46/*
47 *  Normally twice of p-timer. Note 3, IrLAP p. 60 suggests at least twice
48 *  duration of the P-timer.
49 */
50#define WD_TIMEOUT          (POLL_TIMEOUT*2)
51
52#define MEDIABUSY_TIMEOUT   (500*HZ/1000)    /* 500 msec */
53#define SMALLBUSY_TIMEOUT   (100*HZ/1000)    /* 100 msec - IrLAP 6.13.4 */
54
55/*
56 *  Slot timer must never exceed 85 ms, and must always be at least 25 ms,
57 *  suggested to  75-85 msec by IrDA lite. This doesn't work with a lot of
58 *  devices, and other stackes uses a lot more, so it's best we do it as well
59 */
60#define SLOT_TIMEOUT            (90*HZ/1000)
61
62/*
63 *  We set the query timeout to 100 ms and then expect the value to be
64 *  multiplied with the number of slots to product the actual timeout value
65 */
66#define QUERY_TIMEOUT           (HZ/10)
67
68#define WATCHDOG_TIMEOUT        (20*HZ)       /* 20 sec */
69
70typedef void (*TIMER_CALLBACK)(void *);
71
72void irda_start_timer(struct timer_list *ptimer, int timeout, void* data,
73		      TIMER_CALLBACK callback);
74
75inline void irlap_start_slot_timer(struct irlap_cb *self, int timeout);
76inline void irlap_start_query_timer(struct irlap_cb *self, int timeout);
77inline void irlap_start_final_timer(struct irlap_cb *self, int timeout);
78inline void irlap_start_wd_timer(struct irlap_cb *self, int timeout);
79inline void irlap_start_backoff_timer(struct irlap_cb *self, int timeout);
80
81void irlap_start_mbusy_timer(struct irlap_cb *self, int timeout);
82void irlap_stop_mbusy_timer(struct irlap_cb *);
83
84struct lsap_cb;
85struct lap_cb;
86inline void irlmp_start_watchdog_timer(struct lsap_cb *, int timeout);
87inline void irlmp_start_discovery_timer(struct irlmp_cb *, int timeout);
88inline void irlmp_start_idle_timer(struct lap_cb *, int timeout);
89inline void irlmp_stop_idle_timer(struct lap_cb *self);
90
91#endif
92
93