1 files changed, 163 insertions, 0 deletions

diff --git a/drivers/isdn/hisax/fsm.c b/drivers/isdn/hisax/fsm.c
new file mode 100644
index 000000000000..0d44a3f480ac
--- /dev/null
+++ b/drivers/isdn/hisax/fsm.c
@@ -0,0 +1,163 @@
+/* $Id: fsm.c,v 1.14.6.4 2001/09/23 22:24:47 kai Exp $
+ *
+ * Finite state machine
+ *
+ * Author       Karsten Keil
+ * Copyright    by Karsten Keil      <keil@isdn4linux.de>
+ *              by Kai Germaschewski <kai.germaschewski@gmx.de>
+ * 
+ * This software may be used and distributed according to the terms
+ * of the GNU General Public License, incorporated herein by reference.
+ *
+ * Thanks to    Jan den Ouden
+ *              Fritz Elfert
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include "hisax.h"
+
+#define FSM_TIMER_DEBUG 0
+
+int
+FsmNew(struct Fsm *fsm, struct FsmNode *fnlist, int fncount)
+{
+        int i;
+
+        fsm->jumpmatrix = (FSMFNPTR *)
+                kmalloc(sizeof (FSMFNPTR) * fsm->state_count * fsm->event_count, GFP_KERNEL);
+        if (!fsm->jumpmatrix)
+                return -ENOMEM;
+
+        memset(fsm->jumpmatrix, 0, sizeof (FSMFNPTR) * fsm->state_count * fsm->event_count);
+
+        for (i = 0; i < fncount; i++) 
+                if ((fnlist[i].state>=fsm->state_count) || (fnlist[i].event>=fsm->event_count)) {
+                        printk(KERN_ERR "FsmNew Error line %d st(%ld/%ld) ev(%ld/%ld)\n",
+                                i,(long)fnlist[i].state,(long)fsm->state_count,
+                                (long)fnlist[i].event,(long)fsm->event_count);
+                } else          
+                        fsm->jumpmatrix[fsm->state_count * fnlist[i].event +
+                                fnlist[i].state] = (FSMFNPTR) fnlist[i].routine;
+        return 0;
+}
+
+void
+FsmFree(struct Fsm *fsm)
+{
+        kfree((void *) fsm->jumpmatrix);
+}
+
+int
+FsmEvent(struct FsmInst *fi, int event, void *arg)
+{
+        FSMFNPTR r;
+
+        if ((fi->state>=fi->fsm->state_count) || (event >= fi->fsm->event_count)) {
+                printk(KERN_ERR "FsmEvent Error st(%ld/%ld) ev(%d/%ld)\n",
+                        (long)fi->state,(long)fi->fsm->state_count,event,(long)fi->fsm->event_count);
+                return(1);
+        }
+        r = fi->fsm->jumpmatrix[fi->fsm->state_count * event + fi->state];
+        if (r) {
+                if (fi->debug)
+                        fi->printdebug(fi, "State %s Event %s",
+                                fi->fsm->strState[fi->state],
+                                fi->fsm->strEvent[event]);
+                r(fi, event, arg);
+                return (0);
+        } else {
+                if (fi->debug)
+                        fi->printdebug(fi, "State %s Event %s no routine",
+                                fi->fsm->strState[fi->state],
+                                fi->fsm->strEvent[event]);
+                return (!0);
+        }
+}
+
+void
+FsmChangeState(struct FsmInst *fi, int newstate)
+{
+        fi->state = newstate;
+        if (fi->debug)
+                fi->printdebug(fi, "ChangeState %s",
+                        fi->fsm->strState[newstate]);
+}
+
+static void
+FsmExpireTimer(struct FsmTimer *ft)
+{
+#if FSM_TIMER_DEBUG
+        if (ft->fi->debug)
+                ft->fi->printdebug(ft->fi, "FsmExpireTimer %lx", (long) ft);
+#endif
+        FsmEvent(ft->fi, ft->event, ft->arg);
+}
+
+void
+FsmInitTimer(struct FsmInst *fi, struct FsmTimer *ft)
+{
+        ft->fi = fi;
+        ft->tl.function = (void *) FsmExpireTimer;
+        ft->tl.data = (long) ft;
+#if FSM_TIMER_DEBUG
+        if (ft->fi->debug)
+                ft->fi->printdebug(ft->fi, "FsmInitTimer %lx", (long) ft);
+#endif
+        init_timer(&ft->tl);
+}
+
+void
+FsmDelTimer(struct FsmTimer *ft, int where)
+{
+#if FSM_TIMER_DEBUG
+        if (ft->fi->debug)
+                ft->fi->printdebug(ft->fi, "FsmDelTimer %lx %d", (long) ft, where);
+#endif
+        del_timer(&ft->tl);
+}
+
+int
+FsmAddTimer(struct FsmTimer *ft,
+            int millisec, int event, void *arg, int where)
+{
+
+#if FSM_TIMER_DEBUG
+        if (ft->fi->debug)
+                ft->fi->printdebug(ft->fi, "FsmAddTimer %lx %d %d",
+                        (long) ft, millisec, where);
+#endif
+
+        if (timer_pending(&ft->tl)) {
+                printk(KERN_WARNING "FsmAddTimer: timer already active!\n");
+                ft->fi->printdebug(ft->fi, "FsmAddTimer already active!");
+                return -1;
+        }
+        init_timer(&ft->tl);
+        ft->event = event;
+        ft->arg = arg;
+        ft->tl.expires = jiffies + (millisec * HZ) / 1000;
+        add_timer(&ft->tl);
+        return 0;
+}
+
+void
+FsmRestartTimer(struct FsmTimer *ft,
+            int millisec, int event, void *arg, int where)
+{
+
+#if FSM_TIMER_DEBUG
+        if (ft->fi->debug)
+                ft->fi->printdebug(ft->fi, "FsmRestartTimer %lx %d %d",
+                        (long) ft, millisec, where);
+#endif
+
+        if (timer_pending(&ft->tl))
+                del_timer(&ft->tl);
+        init_timer(&ft->tl);
+        ft->event = event;
+        ft->arg = arg;
+        ft->tl.expires = jiffies + (millisec * HZ) / 1000;
+        add_timer(&ft->tl);
+}