Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / isdn / hisax / fsm.c

diff --git a/kernel/drivers/isdn/hisax/fsm.c b/kernel/drivers/isdn/hisax/fsm.c
new file mode 100644 (file)
index 0000000..c7a9471
--- /dev/null
+++ b/kernel/drivers/isdn/hisax/fsm.c
@@ -0,0 +1,162 @@
+/* $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/slab.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 =
+               kzalloc(sizeof(FSMFNPTR) * fsm->state_count * fsm->event_count, GFP_KERNEL);
+       if (!fsm->jumpmatrix)
+               return -ENOMEM;
+
+       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);
+}