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
  19 struct FsmInst;
  20
  21 typedef void (* FSMFNPTR)(struct FsmInst *, int, void *);
  22
  23 struct Fsm {
  24         FSMFNPTR *jumpmatrix;
  25         int state_count, event_count;
  26         char **strEvent, **strState;
  27 };
  28
  29 struct 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
  38 struct FsmNode {
  39         int state, event;
  40         void (*routine) (struct FsmInst *, int, void *);
  41 };
  42
  43 struct FsmTimer {
  44         struct FsmInst *fi;
  45         struct timer_list tl;
  46         int event;
  47         void *arg;
  48 };
  49
  50 int FsmNew(struct Fsm *fsm, struct FsmNode *fnlist, int fncount);
  51 void FsmFree(struct Fsm *fsm);
  52 int FsmEvent(struct FsmInst *fi, int event, void *arg);
  53 void FsmChangeState(struct FsmInst *fi, int newstate);
  54 void FsmInitTimer(struct FsmInst *fi, struct FsmTimer *ft);
  55 int FsmAddTimer(struct FsmTimer *ft, int millisec, int event,
  56                 void *arg, int where);
  57 void FsmRestartTimer(struct FsmTimer *ft, int millisec, int event,
  58                      void *arg, int where);
  59 void FsmDelTimer(struct FsmTimer *ft, int where);
  60
  61 #endif