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 
70 typedef void (*TIMER_CALLBACK)(void *);
71 
72 void irda_start_timer(struct timer_list *ptimer, int timeout, void* data,
73 		      TIMER_CALLBACK callback);
74 
75 void irlap_start_slot_timer(struct irlap_cb *self, int timeout);
76 void irlap_start_query_timer(struct irlap_cb *self, int timeout);
77 void irlap_start_final_timer(struct irlap_cb *self, int timeout);
78 void irlap_start_wd_timer(struct irlap_cb *self, int timeout);
79 void irlap_start_backoff_timer(struct irlap_cb *self, int timeout);
80 
81 void irlap_start_mbusy_timer(struct irlap_cb *self, int timeout);
82 void irlap_stop_mbusy_timer(struct irlap_cb *);
83 
84 struct lsap_cb;
85 struct lap_cb;
86 void irlmp_start_watchdog_timer(struct lsap_cb *, int timeout);
87 void irlmp_start_discovery_timer(struct irlmp_cb *, int timeout);
88 void irlmp_start_idle_timer(struct lap_cb *, int timeout);
89 void irlmp_stop_idle_timer(struct lap_cb *self);
90 
91 #endif
92 
93