qcacmn: Add host initiated self recovery callback in qdf

Add host initiated self recovery callback in qdf such that
self recovery can be invoked from all layers.

Change-Id: Ied2a468019a2e27039686a4acb0e4c8b4577ba8f
CRs-Fixed: 2083099

qdf/inc/qdf_event.h

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014-2016 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2014-2017 The Linux Foundation. All rights reserved.
  *
  * Previously licensed under the ISC license by Qualcomm Atheros, Inc.
  *
@@ -47,6 +47,10 @@ extern "C" {
 typedef __qdf_event_t qdf_event_t;
 /* Function declarations and documenation */
 
+#ifdef CONFIG_MCL
+typedef void (*qdf_self_recovery_callback)(void);
+#endif
+
 QDF_STATUS qdf_event_create(qdf_event_t *event);
 
 QDF_STATUS qdf_event_set(qdf_event_t *event);
@@ -65,6 +69,23 @@ QDF_STATUS qdf_wait_single_event(qdf_event_t *event,
  */
 QDF_STATUS qdf_exit_thread(QDF_STATUS status);
 
+#ifdef CONFIG_MCL
+/**
+ * qdf_register_self_recovery_callback () - register self recovery callback
+ * @callback:  self recovery callback
+ *
+ * Return: None
+ */
+void qdf_register_self_recovery_callback(qdf_self_recovery_callback callback);
+
+/**
+ * qdf_trigger_self_recovery () - tirgger self recovery
+ *
+ * Return: None
+ */
+void qdf_trigger_self_recovery(void);
+#endif
+
 #ifdef __cplusplus
 }
 #endif /* __cplusplus */

qdf/linux/src/qdf_event.c

@@ -39,6 +39,10 @@
 #include "qdf_mc_timer.h"
 #include <linux/export.h>
 
+#ifdef CONFIG_MCL
+static qdf_self_recovery_callback self_recovery_cb;
+#endif
+
 /* Function Definitions and Documentation */
 
 /**
@@ -273,3 +277,20 @@ QDF_STATUS qdf_exit_thread(QDF_STATUS status)
 	return QDF_STATUS_SUCCESS;
 }
 EXPORT_SYMBOL(qdf_exit_thread);
+
+#ifdef CONFIG_MCL
+void qdf_register_self_recovery_callback(qdf_self_recovery_callback callback)
+{
+	self_recovery_cb = callback;
+}
+
+void qdf_trigger_self_recovery(void)
+{
+	if (!self_recovery_cb) {
+		QDF_TRACE(QDF_MODULE_ID_QDF, QDF_TRACE_LEVEL_INFO,
+			  "No self recovery callback registered %s", __func__);
+		return;
+	}
+	self_recovery_cb();
+}
+#endif