LXR linux/drivers/isdn/hisax/fsm.h

   1/* $Id: fsm.h,v 1.3.2.2 2001/09/23 22:24:47 kai Exp $
   2 *
   3 * Finite state machine
   4 *
   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.
  11 *
  12 */
  13
  14#ifndef __FSM_H__
  15#define __FSM_H__
  16
  17#include <linux/timer.h>
  18
  19struct FsmInst;
  20
  21typedef void (*FSMFNPTR)(struct FsmInst *, int, void *);
  22
  23struct Fsm {
  24        FSMFNPTR *jumpmatrix;
  25        int state_count, event_count;
  26        char **strEvent, **strState;
  27};
  28
  29struct FsmInst {
  30        struct Fsm *fsm;
  31        int state;
  32        int debug;
  33        void *userdata;
  34        int userint;
  35        void (*printdebug) (struct FsmInst *, char *, ...);
  36};
  37
  38struct FsmNode {
  39        int state, event;
  40        void (*routine) (struct FsmInst *, int, void *);
  41};
  42
  43struct FsmTimer {
  44        struct FsmInst *fi;
  45        struct timer_list tl;
  46        int event;
  47        void *arg;
  48};
  49
  50int FsmNew(struct Fsm *fsm, struct FsmNode *fnlist, int fncount);
  51void FsmFree(struct Fsm *fsm);
  52int FsmEvent(struct FsmInst *fi, int event, void *arg);
  53void FsmChangeState(struct FsmInst *fi, int newstate);
  54void FsmInitTimer(struct FsmInst *fi, struct FsmTimer *ft);
  55int FsmAddTimer(struct FsmTimer *ft, int millisec, int event,
  56                void *arg, int where);
  57void FsmRestartTimer(struct FsmTimer *ft, int millisec, int event,
  58                     void *arg, int where);
  59void FsmDelTimer(struct FsmTimer *ft, int where);
  60
  61#endif
  62