qcacmn: add the tags for the various hang event

As part of the hang event data population by various TLV format
is used, define tags for all the modules which can be used
while populating the data.

Change-Id: Ie9c53a8781a902ad687a78d1333053b6fae67021
CRs-Fixed: 2651729

qdf/inc/qdf_hang_event_notifier.h

@@ -25,7 +25,44 @@
 #include <qdf_notifier.h>
 
 #define QDF_HANG_EVENT_VERSION "1.0"
+/* Max hang event buffer size */
 #define QDF_HANG_EVENT_DATA_SIZE 784
+/* Max offset which host can write */
+#define QDF_WLAN_MAX_HOST_OFFSET 390
+/* Start of the Firmware Data offset */
+#define QDF_WLAN_HANG_FW_OFFSET 392
+
+/**
+ * hang_event_tag: Hang event tag for various modules
+ * @HANG_EVT_TAG_CDS: CDS module hang event tag
+ * @HANG_EVT_TAG_OS_IF: OS interface module hang event tag
+ * @HANG_EVT_TAG_OS_IF_SCAN: scan module hang event tag
+ * @HANG_EVT_TAG_LEGACY_MAC: Legacy mac module hang event tag
+ * @HANG_EVT_TAG_WMI_EVT_HIST: WMI event history hang event tag
+ * @HANG_EVT_TAG_WMI_CMD_HIST: WMI command history hang event tag
+ * @HANG_EVT_TAG_WMI_CMD_HIST: HTC event tag wmi command history hang event tag
+ * @HANG_EVT_TAG_DP_PEER_INFO: DP peer info hang event tag
+ * @HANG_EVT_TAG_CE_INFO: Copy Engine hang event tag
+ */
+enum hang_event_tag {
+	HANG_EVT_TAG_CDS,
+	HANG_EVT_TAG_OS_IF,
+	HANG_EVT_TAG_OS_IF_SCAN,
+	HANG_EVT_TAG_LEGACY_MAC,
+	HANG_EVT_TAG_WMI_EVT_HIST,
+	HANG_EVT_TAG_WMI_CMD_HIST,
+	HANG_EVT_TAG_HTC_CREDIT_HIST,
+	HANG_EVT_TAG_DP_PEER_INFO,
+	HANG_EVT_TAG_CE_INFO
+};
+
+#define QDF_HANG_EVENT_TLV_HDR_SIZE   (sizeof(uint32_t))
+
+#define QDF_HANG_EVT_SET_HDR(tlv_buf, tag, len) \
+	(((uint32_t *)(tlv_buf))[0]) = (((tag) << 16) | ((len) & 0x0000FFFF))
+
+#define QDF_HANG_GET_STRUCT_TLVLEN(tlv_struct) \
+	((uint32_t)(sizeof(tlv_struct) - QDF_HANG_EVENT_TLV_HDR_SIZE))
 
 /**
  * qdf_notifier_data - Private data for notifier data