[PATCH] aic7xxx_osm build fix
[cris-mirror.git] / drivers / isdn / hisax / fsm.c
blob0d44a3f480ac6327808b866aef7597f254b8234d
1 /* $Id: fsm.c,v 1.14.6.4 2001/09/23 22:24:47 kai Exp $
3 * Finite state machine
5 * Author Karsten Keil
6 * Copyright by Karsten Keil <keil@isdn4linux.de>
7 * by Kai Germaschewski <kai.germaschewski@gmx.de>
8 *
9 * This software may be used and distributed according to the terms
10 * of the GNU General Public License, incorporated herein by reference.
12 * Thanks to Jan den Ouden
13 * Fritz Elfert
17 #include <linux/module.h>
18 #include <linux/init.h>
19 #include "hisax.h"
21 #define FSM_TIMER_DEBUG 0
23 int
24 FsmNew(struct Fsm *fsm, struct FsmNode *fnlist, int fncount)
26 int i;
28 fsm->jumpmatrix = (FSMFNPTR *)
29 kmalloc(sizeof (FSMFNPTR) * fsm->state_count * fsm->event_count, GFP_KERNEL);
30 if (!fsm->jumpmatrix)
31 return -ENOMEM;
33 memset(fsm->jumpmatrix, 0, sizeof (FSMFNPTR) * fsm->state_count * fsm->event_count);
35 for (i = 0; i < fncount; i++)
36 if ((fnlist[i].state>=fsm->state_count) || (fnlist[i].event>=fsm->event_count)) {
37 printk(KERN_ERR "FsmNew Error line %d st(%ld/%ld) ev(%ld/%ld)\n",
38 i,(long)fnlist[i].state,(long)fsm->state_count,
39 (long)fnlist[i].event,(long)fsm->event_count);
40 } else
41 fsm->jumpmatrix[fsm->state_count * fnlist[i].event +
42 fnlist[i].state] = (FSMFNPTR) fnlist[i].routine;
43 return 0;
46 void
47 FsmFree(struct Fsm *fsm)
49 kfree((void *) fsm->jumpmatrix);
52 int
53 FsmEvent(struct FsmInst *fi, int event, void *arg)
55 FSMFNPTR r;
57 if ((fi->state>=fi->fsm->state_count) || (event >= fi->fsm->event_count)) {
58 printk(KERN_ERR "FsmEvent Error st(%ld/%ld) ev(%d/%ld)\n",
59 (long)fi->state,(long)fi->fsm->state_count,event,(long)fi->fsm->event_count);
60 return(1);
62 r = fi->fsm->jumpmatrix[fi->fsm->state_count * event + fi->state];
63 if (r) {
64 if (fi->debug)
65 fi->printdebug(fi, "State %s Event %s",
66 fi->fsm->strState[fi->state],
67 fi->fsm->strEvent[event]);
68 r(fi, event, arg);
69 return (0);
70 } else {
71 if (fi->debug)
72 fi->printdebug(fi, "State %s Event %s no routine",
73 fi->fsm->strState[fi->state],
74 fi->fsm->strEvent[event]);
75 return (!0);
79 void
80 FsmChangeState(struct FsmInst *fi, int newstate)
82 fi->state = newstate;
83 if (fi->debug)
84 fi->printdebug(fi, "ChangeState %s",
85 fi->fsm->strState[newstate]);
88 static void
89 FsmExpireTimer(struct FsmTimer *ft)
91 #if FSM_TIMER_DEBUG
92 if (ft->fi->debug)
93 ft->fi->printdebug(ft->fi, "FsmExpireTimer %lx", (long) ft);
94 #endif
95 FsmEvent(ft->fi, ft->event, ft->arg);
98 void
99 FsmInitTimer(struct FsmInst *fi, struct FsmTimer *ft)
101 ft->fi = fi;
102 ft->tl.function = (void *) FsmExpireTimer;
103 ft->tl.data = (long) ft;
104 #if FSM_TIMER_DEBUG
105 if (ft->fi->debug)
106 ft->fi->printdebug(ft->fi, "FsmInitTimer %lx", (long) ft);
107 #endif
108 init_timer(&ft->tl);
111 void
112 FsmDelTimer(struct FsmTimer *ft, int where)
114 #if FSM_TIMER_DEBUG
115 if (ft->fi->debug)
116 ft->fi->printdebug(ft->fi, "FsmDelTimer %lx %d", (long) ft, where);
117 #endif
118 del_timer(&ft->tl);
122 FsmAddTimer(struct FsmTimer *ft,
123 int millisec, int event, void *arg, int where)
126 #if FSM_TIMER_DEBUG
127 if (ft->fi->debug)
128 ft->fi->printdebug(ft->fi, "FsmAddTimer %lx %d %d",
129 (long) ft, millisec, where);
130 #endif
132 if (timer_pending(&ft->tl)) {
133 printk(KERN_WARNING "FsmAddTimer: timer already active!\n");
134 ft->fi->printdebug(ft->fi, "FsmAddTimer already active!");
135 return -1;
137 init_timer(&ft->tl);
138 ft->event = event;
139 ft->arg = arg;
140 ft->tl.expires = jiffies + (millisec * HZ) / 1000;
141 add_timer(&ft->tl);
142 return 0;
145 void
146 FsmRestartTimer(struct FsmTimer *ft,
147 int millisec, int event, void *arg, int where)
150 #if FSM_TIMER_DEBUG
151 if (ft->fi->debug)
152 ft->fi->printdebug(ft->fi, "FsmRestartTimer %lx %d %d",
153 (long) ft, millisec, where);
154 #endif
156 if (timer_pending(&ft->tl))
157 del_timer(&ft->tl);
158 init_timer(&ft->tl);
159 ft->event = event;
160 ft->arg = arg;
161 ft->tl.expires = jiffies + (millisec * HZ) / 1000;
162 add_timer(&ft->tl);