summaryrefslogtreecommitdiff
path: root/drivers/isdn/hardware/eicon/diddfunc.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/isdn/hardware/eicon/diddfunc.c')
-rw-r--r--drivers/isdn/hardware/eicon/diddfunc.c115
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();
+}