1 files changed, 115 insertions, 0 deletions
diff --git a/drivers/isdn/hardware/eicon/diddfunc.c b/drivers/isdn/hardware/eicon/diddfunc.c
new file mode 100644
index 000000000..b0b23ed8b
--- /dev/null
+++ b/drivers/isdn/hardware/eicon/diddfunc.c
@@ -0,0 +1,115 @@
+/* $Id: diddfunc.c,v 1.14.6.2 2004/08/28 20:03:53 armin Exp $
+ *
+ * DIDD Interface module for Eicon active cards.
+ *
+ * Functions are in dadapter.c
+ *
+ * Copyright 2002-2003 by Armin Schindler (mac@melware.de)
+ * Copyright 2002-2003 Cytronics & Melware (info@melware.de)
+ *
+ * This software may be used and distributed according to the terms
+ * of the GNU General Public License, incorporated herein by reference.
+ */
+
+#include "platform.h"
+#include "di_defs.h"
+#include "dadapter.h"
+#include "divasync.h"
+
+#define DBG_MINIMUM  (DL_LOG + DL_FTL + DL_ERR)
+#define DBG_DEFAULT  (DBG_MINIMUM + DL_XLOG + DL_REG)
+
+
+extern void DIVA_DIDD_Read(void *, int);
+extern char *DRIVERRELEASE_DIDD;
+static dword notify_handle;
+static DESCRIPTOR _DAdapter;
+
+/*
+ * didd callback function
+ */
+static void *didd_callback(void *context, DESCRIPTOR *adapter,
+			   int removal)
+{
+	if (adapter->type == IDI_DADAPTER) {
+		DBG_ERR(("Notification about IDI_DADAPTER change ! Oops."))
+			return (NULL);
+	} else if (adapter->type == IDI_DIMAINT) {
+		if (removal) {
+			DbgDeregister();
+		} else {
+			DbgRegister("DIDD", DRIVERRELEASE_DIDD, DBG_DEFAULT);
+		}
+	}
+	return (NULL);
+}
+
+/*
+ * connect to didd
+ */
+static int __init connect_didd(void)
+{
+	int x = 0;
+	int dadapter = 0;
+	IDI_SYNC_REQ req;
+	DESCRIPTOR DIDD_Table[MAX_DESCRIPTORS];
+
+	DIVA_DIDD_Read(DIDD_Table, sizeof(DIDD_Table));
+
+	for (x = 0; x < MAX_DESCRIPTORS; x++) {
+		if (DIDD_Table[x].type == IDI_DADAPTER) {	/* DADAPTER found */
+			dadapter = 1;
+			memcpy(&_DAdapter, &DIDD_Table[x], sizeof(_DAdapter));
+			req.didd_notify.e.Req = 0;
+			req.didd_notify.e.Rc =
+				IDI_SYNC_REQ_DIDD_REGISTER_ADAPTER_NOTIFY;
+			req.didd_notify.info.callback = (void *)didd_callback;
+			req.didd_notify.info.context = NULL;
+			_DAdapter.request((ENTITY *)&req);
+			if (req.didd_notify.e.Rc != 0xff)
+				return (0);
+			notify_handle = req.didd_notify.info.handle;
+		} else if (DIDD_Table[x].type == IDI_DIMAINT) {	/* MAINT found */
+			DbgRegister("DIDD", DRIVERRELEASE_DIDD, DBG_DEFAULT);
+		}
+	}
+	return (dadapter);
+}
+
+/*
+ * disconnect from didd
+ */
+static void __exit disconnect_didd(void)
+{
+	IDI_SYNC_REQ req;
+
+	req.didd_notify.e.Req = 0;
+	req.didd_notify.e.Rc = IDI_SYNC_REQ_DIDD_REMOVE_ADAPTER_NOTIFY;
+	req.didd_notify.info.handle = notify_handle;
+	_DAdapter.request((ENTITY *)&req);
+}
+
+/*
+ * init
+ */
+int __init diddfunc_init(void)
+{
+	diva_didd_load_time_init();
+
+	if (!connect_didd()) {
+		DBG_ERR(("init: failed to connect to DIDD."))
+			diva_didd_load_time_finit();
+		return (0);
+	}
+	return (1);
+}
+
+/*
+ * finit
+ */
+void __exit diddfunc_finit(void)
+{
+	DbgDeregister();
+	disconnect_didd();
+	diva_didd_load_time_finit();
+}