qcacmn: Changes to converge WMI Recording feature

1.Logging of all WMI activities(commands, tx complete, events)
is adapted for WIN.
2. WIN and MCL continues to use existing approach of memory
allocation and it is managed using feature flag in common code.
3. Use debugfs for WMI event debugging.

example to read buffer through debugfs interface -
- Navigate to WMI directory under debugfs (/sys/kernel/debug/WMIx)
- It will display elements/files for all command/event buffers
- "cat wmi_command_log" (desired buffer name)
- Output will display something like this:
CMD ID = 16001
CMD = d 0 d8c6de24 e1cf
CMD ID = 16001
CMD = 8 0 0 0
CMD ID = 16001
CMD = d 0 d8c6de24 e1cf
CMD ID = 16001

Change-Id: I26895b480b9eaa400183c4667b9ac6980939cab9
Acked-by: Pratik Gandhi <[email protected]>
CRs-Fixed: 1019979

wmi/inc/wmi_unified_priv.h

@@ -46,19 +46,94 @@ typedef qdf_nbuf_t wmi_buf_t;
 #ifdef WMI_INTERFACE_EVENT_LOGGING
 
 #define WMI_EVENT_DEBUG_MAX_ENTRY (1024)
+#define WMI_EVENT_DEBUG_ENTRY_MAX_LENGTH (16)
+/* wmi_mgmt commands */
+#define WMI_MGMT_EVENT_DEBUG_MAX_ENTRY (256)
 
+/**
+ * struct wmi_command_debug - WMI command log buffer data type
+ * @ command - Store WMI Command id
+ * @ data - Stores WMI command data
+ * @ time - Time of WMI command handling
+ */
 struct wmi_command_debug {
 	uint32_t command;
-	uint32_t data[4]; /*16 bytes of WMI cmd excluding TLV and WMI headers */
+	/*16 bytes of WMI cmd excluding TLV and WMI headers */
+	uint32_t data[WMI_EVENT_DEBUG_ENTRY_MAX_LENGTH/sizeof(uint32_t)];
 	uint64_t time;
 };
 
+/**
+ * struct wmi_event_debug - WMI event log buffer data type
+ * @ command - Store WMI Event id
+ * @ data - Stores WMI Event data
+ * @ time - Time of WMI Event handling
+ */
 struct wmi_event_debug {
 	uint32_t event;
-	uint32_t data[4]; /*16 bytes of WMI event data excluding TLV header */
+	/*16 bytes of WMI event data excluding TLV header */
+	uint32_t data[WMI_EVENT_DEBUG_ENTRY_MAX_LENGTH/sizeof(uint32_t)];
 	uint64_t time;
 };
 
+/**
+ * struct wmi_log_buf_t - WMI log buffer information type
+ * @buf - Refernce to WMI log buffer
+ * @ length - length of buffer
+ * @ buf_tail_idx - Tail index of buffer
+ * @ p_buf_tail_idx - refernce to buffer tail index. It is added to accommodate
+ * unified design since MCL uses global variable for buffer tail index
+ */
+struct wmi_log_buf_t {
+	void *buf;
+	uint32_t length;
+	uint32_t buf_tail_idx;
+	uint32_t *p_buf_tail_idx;
+};
+
+/**
+ * struct wmi_debug_log_info - Meta data to hold information of all buffers
+ * used for WMI logging
+ * @wmi_command_log_buf_info - Buffer info for WMI Command log
+ * @wmi_command_tx_cmp_log_buf_info - Buffer info for WMI Command Tx completion
+ * log
+ * @wmi_event_log_buf_info - Buffer info for WMI Event log
+ * @wmi_rx_event_log_buf_info - Buffer info for WMI event received log
+ * @wmi_mgmt_command_log_buf_info - Buffer info for WMI Management Command log
+ * @wmi_mgmt_command_tx_cmp_log_buf_info - Buffer info for WMI Management
+ * Command Tx completion log
+ * @wmi_mgmt_event_log_buf_info - Buffer info for WMI Management event log
+ * @wmi_record_lock - Lock WMI recording
+ * @wmi_logging_enable - Enable/Disable state for WMI logging
+ * @buf_offset_command - Offset from where WMI command data should be logged
+ * @buf_offset_event - Offset from where WMI event data should be logged
+ * @is_management_record - Function refernce to check if command/event is
+ *  management record
+ * @wmi_id_to_name - Function refernce to API to convert Command id to
+ * string name
+ * @wmi_log_debugfs_dir - refernce to debugfs directory
+ */
+struct wmi_debug_log_info {
+	struct wmi_log_buf_t wmi_command_log_buf_info;
+	struct wmi_log_buf_t wmi_command_tx_cmp_log_buf_info;
+
+	struct wmi_log_buf_t wmi_event_log_buf_info;
+	struct wmi_log_buf_t wmi_rx_event_log_buf_info;
+
+	struct wmi_log_buf_t wmi_mgmt_command_log_buf_info;
+	struct wmi_log_buf_t wmi_mgmt_command_tx_cmp_log_buf_info;
+	struct wmi_log_buf_t wmi_mgmt_event_log_buf_info;
+
+	qdf_spinlock_t wmi_record_lock;
+	bool wmi_logging_enable;
+	uint32_t buf_offset_command;
+	uint32_t buf_offset_event;
+	bool (*is_management_record)(uint32_t cmd_id);
+	uint8_t *(*wmi_id_to_name)(uint32_t cmd_id);
+	struct dentry *wmi_log_debugfs_dir;
+	uint8_t wmi_instance_id;
+};
+
 #endif /*WMI_INTERFACE_EVENT_LOGGING */
 
 #ifdef WLAN_OPEN_SOURCE
@@ -1080,7 +1155,7 @@ struct wmi_unified {
 #endif /* WLAN_OPEN_SOURCE */
 
 #ifdef WMI_INTERFACE_EVENT_LOGGING
-	qdf_spinlock_t wmi_record_lock;
+	struct wmi_debug_log_info log_info;
 #endif /*WMI_INTERFACE_EVENT_LOGGING */
 
 	qdf_atomic_t is_target_suspended;

wmi/src/wmi_unified_non_tlv.c

@@ -7146,6 +7146,19 @@ static QDF_STATUS extract_tx_data_traffic_ctrl_ev_non_tlv(
 	return QDF_STATUS_SUCCESS;
 }
 
+#ifdef WMI_INTERFACE_EVENT_LOGGING
+static bool is_management_record_non_tlv(uint32_t cmd_id)
+{
+	if ((cmd_id == WMI_BCN_TX_CMDID) ||
+		(cmd_id == WMI_PDEV_SEND_BCN_CMDID) ||
+		(cmd_id == WMI_MGMT_TX_CMDID)) {
+		return true;
+	}
+
+	return false;
+}
+#endif
+
 struct wmi_ops non_tlv_ops =  {
 	.send_vdev_create_cmd = send_vdev_create_cmd_non_tlv,
 	.send_vdev_delete_cmd = send_vdev_delete_cmd_non_tlv,
@@ -7918,6 +7931,14 @@ void wmi_non_tlv_attach(struct wmi_unified *wmi_handle)
 	populate_non_tlv_events_id(wmi_handle->wmi_events);
 	populate_pdev_param_non_tlv(wmi_handle->pdev_param);
 	populate_vdev_param_non_tlv(wmi_handle->vdev_param);
+
+#ifdef WMI_INTERFACE_EVENT_LOGGING
+	wmi_handle->log_info.buf_offset_command = 0;
+	wmi_handle->log_info.buf_offset_event = 0;
+	wmi_handle->log_info.is_management_record =
+		is_management_record_non_tlv;
+	/*(uint8 *)(*wmi_id_to_name)(uint32_t cmd_id);*/
+#endif
 #else
 	qdf_print("%s: Not supported\n", __func__);
 #endif

wmi/src/wmi_unified_tlv.c

@@ -10377,6 +10377,14 @@ error:
 	return status;
 }
 
+static bool is_management_record_tlv(uint32_t cmd_id)
+{
+	if ((cmd_id == WMI_MGMT_TX_SEND_CMDID) ||
+			(cmd_id == WMI_MGMT_TX_COMPLETION_EVENTID))
+		return true;
+	return false;
+}
+
 struct wmi_ops tlv_ops =  {
 	.send_vdev_create_cmd = send_vdev_create_cmd_tlv,
 	.send_vdev_delete_cmd = send_vdev_delete_cmd_tlv,
@@ -10590,4 +10598,10 @@ struct wmi_ops tlv_ops =  {
 void wmi_tlv_attach(wmi_unified_t wmi_handle)
 {
 	wmi_handle->ops = &tlv_ops;
+#ifdef WMI_INTERFACE_EVENT_LOGGING
+	wmi_handle->log_info.buf_offset_command = 2;
+	wmi_handle->log_info.buf_offset_event = 4;
+	wmi_handle->log_info.is_management_record =
+		is_management_record_tlv;
+#endif
 }