1 /* $Id: fsm.c,v 1.1.4.1 2001/11/20 14:19:35 kai Exp $
6 * Copyright by Karsten Keil <keil@isdn4linux.de>
7 * by Kai Germaschewski <kai.germaschewski@gmx.de>
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
17 #define __NO_VERSION__
18 #include <linux/module.h>
19 #include <linux/init.h>
22 #define FSM_TIMER_DEBUG 0
25 FsmNew(struct Fsm *fsm, struct FsmNode *fnlist, int fncount)
29 fsm->jumpmatrix = (FSMFNPTR *)
30 kmalloc(sizeof (FSMFNPTR) * fsm->state_count * fsm->event_count, GFP_KERNEL);
34 memset(fsm->jumpmatrix, 0, sizeof (FSMFNPTR) * fsm->state_count * fsm->event_count);
36 for (i = 0; i < fncount; i++)
37 if ((fnlist[i].state>=fsm->state_count) || (fnlist[i].event>=fsm->event_count)) {
38 printk(KERN_ERR "FsmNew Error line %d st(%ld/%ld) ev(%ld/%ld)\n",
39 i,(long)fnlist[i].state,(long)fsm->state_count,
40 (long)fnlist[i].event,(long)fsm->event_count);
42 fsm->jumpmatrix[fsm->state_count * fnlist[i].event +
43 fnlist[i].state] = (FSMFNPTR) fnlist[i].routine;
48 FsmFree(struct Fsm *fsm)
50 kfree((void *) fsm->jumpmatrix);
54 FsmEvent(struct FsmInst *fi, int event, void *arg)
58 if ((fi->state>=fi->fsm->state_count) || (event >= fi->fsm->event_count)) {
59 printk(KERN_ERR "FsmEvent Error st(%ld/%ld) ev(%d/%ld)\n",
60 (long)fi->state,(long)fi->fsm->state_count,event,(long)fi->fsm->event_count);
63 r = fi->fsm->jumpmatrix[fi->fsm->state_count * event + fi->state];
66 fi->printdebug(fi, "State %s Event %s",
67 fi->fsm->strState[fi->state],
68 fi->fsm->strEvent[event]);
73 fi->printdebug(fi, "State %s Event %s no routine",
74 fi->fsm->strState[fi->state],
75 fi->fsm->strEvent[event]);
81 FsmChangeState(struct FsmInst *fi, int newstate)
85 fi->printdebug(fi, "ChangeState %s",
86 fi->fsm->strState[newstate]);
90 FsmExpireTimer(struct FsmTimer *ft)
94 ft->fi->printdebug(ft->fi, "FsmExpireTimer %lx", (long) ft);
96 FsmEvent(ft->fi, ft->event, ft->arg);
100 FsmInitTimer(struct FsmInst *fi, struct FsmTimer *ft)
103 ft->tl.function = (void *) FsmExpireTimer;
104 ft->tl.data = (long) ft;
107 ft->fi->printdebug(ft->fi, "FsmInitTimer %lx", (long) ft);
113 FsmDelTimer(struct FsmTimer *ft, int where)
117 ft->fi->printdebug(ft->fi, "FsmDelTimer %lx %d", (long) ft, where);
123 FsmAddTimer(struct FsmTimer *ft,
124 int millisec, int event, void *arg, int where)
129 ft->fi->printdebug(ft->fi, "FsmAddTimer %lx %d %d",
130 (long) ft, millisec, where);
133 if (timer_pending(&ft->tl)) {
134 printk(KERN_WARNING "FsmAddTimer: timer already active!\n");
135 ft->fi->printdebug(ft->fi, "FsmAddTimer already active!");
141 ft->tl.expires = jiffies + (millisec * HZ) / 1000;
147 FsmRestartTimer(struct FsmTimer *ft,
148 int millisec, int event, void *arg, int where)
153 ft->fi->printdebug(ft->fi, "FsmRestartTimer %lx %d %d",
154 (long) ft, millisec, where);
157 if (timer_pending(&ft->tl))
162 ft->tl.expires = jiffies + (millisec * HZ) / 1000;