Add mISDN core files

Add mISDN core files

Signed-off-by: Karsten Keil <kkeil@suse.de>

1 files changed, 183 insertions, 0 deletions

diff --git a/drivers/isdn/mISDN/fsm.c b/drivers/isdn/mISDN/fsm.c
new file mode 100644
index 000000000000..b5d6553f2dc8
--- /dev/null
+++ b/drivers/isdn/mISDN/fsm.c
@@ -0,0 +1,183 @@
+/*
+ * finite state machine implementation
+ *
+ * Author       Karsten Keil <kkeil@novell.com>
+ *
+ * Thanks to    Jan den Ouden
+ *              Fritz Elfert
+ * Copyright 2008  by Karsten Keil <kkeil@novell.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/string.h>
+#include "fsm.h"
+
+#define FSM_TIMER_DEBUG 0
+
+void
+mISDN_FsmNew(struct Fsm *fsm,
+       struct FsmNode *fnlist, int fncount)
+{
+        int i;
+
+        fsm->jumpmatrix = kzalloc(sizeof(FSMFNPTR) * fsm->state_count *
+                fsm->event_count, GFP_KERNEL);
+
+        for (i = 0; i < fncount; i++)
+                if ((fnlist[i].state >= fsm->state_count) ||
+                    (fnlist[i].event >= fsm->event_count)) {
+                        printk(KERN_ERR
+                            "mISDN_FsmNew Error: %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;
+}
+EXPORT_SYMBOL(mISDN_FsmNew);
+
+void
+mISDN_FsmFree(struct Fsm *fsm)
+{
+        kfree((void *) fsm->jumpmatrix);
+}
+EXPORT_SYMBOL(mISDN_FsmFree);
+
+int
+mISDN_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
+                    "mISDN_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 action",
+                                fi->fsm->strState[fi->state],
+                                fi->fsm->strEvent[event]);
+                return 1;
+        }
+}
+EXPORT_SYMBOL(mISDN_FsmEvent);
+
+void
+mISDN_FsmChangeState(struct FsmInst *fi, int newstate)
+{
+        fi->state = newstate;
+        if (fi->debug)
+                fi->printdebug(fi, "ChangeState %s",
+                        fi->fsm->strState[newstate]);
+}
+EXPORT_SYMBOL(mISDN_FsmChangeState);
+
+static void
+FsmExpireTimer(struct FsmTimer *ft)
+{
+#if FSM_TIMER_DEBUG
+        if (ft->fi->debug)
+                ft->fi->printdebug(ft->fi, "FsmExpireTimer %lx", (long) ft);
+#endif
+        mISDN_FsmEvent(ft->fi, ft->event, ft->arg);
+}
+
+void
+mISDN_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, "mISDN_FsmInitTimer %lx", (long) ft);
+#endif
+        init_timer(&ft->tl);
+}
+EXPORT_SYMBOL(mISDN_FsmInitTimer);
+
+void
+mISDN_FsmDelTimer(struct FsmTimer *ft, int where)
+{
+#if FSM_TIMER_DEBUG
+        if (ft->fi->debug)
+                ft->fi->printdebug(ft->fi, "mISDN_FsmDelTimer %lx %d",
+                        (long) ft, where);
+#endif
+        del_timer(&ft->tl);
+}
+EXPORT_SYMBOL(mISDN_FsmDelTimer);
+
+int
+mISDN_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, "mISDN_FsmAddTimer %lx %d %d",
+                        (long) ft, millisec, where);
+#endif
+
+        if (timer_pending(&ft->tl)) {
+                if (ft->fi->debug) {
+                        printk(KERN_WARNING
+                                "mISDN_FsmAddTimer: timer already active!\n");
+                        ft->fi->printdebug(ft->fi,
+                                "mISDN_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;
+}
+EXPORT_SYMBOL(mISDN_FsmAddTimer);
+
+void
+mISDN_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, "mISDN_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);
+}
+EXPORT_SYMBOL(mISDN_FsmRestartTimer);