qcacmn: Hex dump generation for WMI events and cmds

Support WHUNT FW simulation feature.
Records all the WMI events and commands, for all PDEVs.
Set WMI_EXT_DBG flag to enable this.

Change-Id: I18e46f683e35912cad717ca3b9cc3d1885315362
CRs-Fixed: 2762266

qdf/linux/src/qdf_debugfs.c

@@ -176,6 +176,7 @@ void qdf_debugfs_hexdump(qdf_debugfs_file_t file, const uint8_t *buf,
 		     false);
 }
 
+qdf_export_symbol(qdf_debugfs_hexdump);
 #else
 
 void qdf_debugfs_hexdump(qdf_debugfs_file_t file, const uint8_t *buf,
@@ -203,6 +204,7 @@ void qdf_debugfs_hexdump(qdf_debugfs_file_t file, const uint8_t *buf,
 	}
 }
 
+qdf_export_symbol(qdf_debugfs_hexdump);
 #endif
 
 bool qdf_debugfs_overflow(qdf_debugfs_file_t file)
@@ -210,6 +212,8 @@ bool qdf_debugfs_overflow(qdf_debugfs_file_t file)
 	return seq_has_overflowed(file);
 }
 
+qdf_export_symbol(qdf_debugfs_overflow);
+
 void qdf_debugfs_write(qdf_debugfs_file_t file, const uint8_t *buf,
 		       qdf_size_t len)
 {

wmi/inc/wmi_unified_priv.h

@@ -2939,33 +2939,6 @@ static inline void wmi_ext_dbg_msg_put(struct wmi_ext_dbg_msg *msg)
 	qdf_mem_free(msg);
 }
 
-#else
-
-static inline QDF_STATUS wmi_ext_dbg_msg_cmd_record(struct wmi_unified
-						    *wmi_handle,
-						    uint8_t *buf, uint32_t len)
-{
-	return QDF_STATUS_SUCCESS;
-}
-
-static inline QDF_STATUS wmi_ext_dbg_msg_event_record(struct wmi_unified
-						      *wmi_handle,
-						      uint8_t *buf,
-						      uint32_t len)
-{
-	return QDF_STATUS_SUCCESS;
-}
-
-static inline QDF_STATUS wmi_ext_dbgfs_init(struct wmi_unified *wmi_handle)
-{
-	return QDF_STATUS_SUCCESS;
-}
-
-static inline QDF_STATUS wmi_ext_dbgfs_deinit(struct wmi_unified *wmi_handle)
-{
-	return QDF_STATUS_SUCCESS;
-}
-
 #endif /*WMI_EXT_DBG */
 
 #ifdef WLAN_CFR_ENABLE

wmi/src/wmi_unified.c

@@ -534,33 +534,45 @@ static QDF_STATUS wmi_ext_dbg_msg_write(void *priv, const char *buf,
 	return QDF_STATUS_E_NOSUPPORT;
 }
 
-static struct qdf_debugfs_fops wmi_ext_dbgfs_ops = {
-	.show		= wmi_ext_dbg_msg_show,
-	.write		= wmi_ext_dbg_msg_write,
-	.priv		= NULL,
-};
+static struct qdf_debugfs_fops wmi_ext_dbgfs_ops[WMI_MAX_RADIOS];
 
 /**
  * wmi_ext_debugfs_init() - init debugfs items for extended wmi dump.
  *
  * @wmi_handle: wmi handler
+ * @pdev_idx: pdev index
  *
  * Return: QDF_STATUS_SUCCESS if debugfs is initialized else
  * QDF_STATUS_E_FAILURE
  */
-static QDF_STATUS wmi_ext_dbgfs_init(struct wmi_unified *wmi_handle)
+static QDF_STATUS wmi_ext_dbgfs_init(struct wmi_unified *wmi_handle,
+				     uint32_t pdev_idx)
 {
 	qdf_dentry_t dentry;
+	char buf[32];
+
+	/* To maintain backward compatibility, naming convention for PDEV 0
+	 * dentry is kept same as before. For more than 1 PDEV, dentry
+	 * names will be appended with PDEVx.
+	 */
+	if (wmi_handle->soc->soc_idx == 0 && pdev_idx == 0) {
+		dentry  = qdf_debugfs_create_dir(WMI_EXT_DBG_DIR, NULL);
+	} else {
+		snprintf(buf, sizeof(buf), "WMI_EXT_DBG_SOC%u_PDEV%u",
+			 wmi_handle->soc->soc_idx, pdev_idx);
+		dentry  = qdf_debugfs_create_dir(buf, NULL);
+	}
 
-	dentry  = qdf_debugfs_create_dir(WMI_EXT_DBG_DIR, NULL);
 	if (!dentry) {
 		WMI_LOGE("error while creating extended wmi debugfs dir");
 		return QDF_STATUS_E_FAILURE;
 	}
 
-	wmi_ext_dbgfs_ops.priv = wmi_handle;
+	wmi_ext_dbgfs_ops[pdev_idx].show = wmi_ext_dbg_msg_show;
+	wmi_ext_dbgfs_ops[pdev_idx].write = wmi_ext_dbg_msg_write;
+	wmi_ext_dbgfs_ops[pdev_idx].priv = wmi_handle;
 	if (!qdf_debugfs_create_file(WMI_EXT_DBG_FILE, WMI_EXT_DBG_FILE_PERM,
-				     dentry, &wmi_ext_dbgfs_ops)) {
+				     dentry, &wmi_ext_dbgfs_ops[pdev_idx])) {
 		qdf_debugfs_remove_dir(dentry);
 		WMI_LOGE("error while creating extended wmi debugfs file");
 		return QDF_STATUS_E_FAILURE;
@@ -593,6 +605,34 @@ static QDF_STATUS wmi_ext_dbgfs_deinit(struct wmi_unified *wmi_handle)
 	return QDF_STATUS_SUCCESS;
 }
 
+#else
+
+static inline QDF_STATUS wmi_ext_dbg_msg_cmd_record(struct wmi_unified
+						    *wmi_handle,
+						    uint8_t *buf, uint32_t len)
+{
+	return QDF_STATUS_SUCCESS;
+}
+
+static inline QDF_STATUS wmi_ext_dbg_msg_event_record(struct wmi_unified
+						      *wmi_handle,
+						      uint8_t *buf,
+						      uint32_t len)
+{
+	return QDF_STATUS_SUCCESS;
+}
+
+static inline QDF_STATUS wmi_ext_dbgfs_init(struct wmi_unified *wmi_handle,
+					    uint32_t pdev_idx)
+{
+	return QDF_STATUS_SUCCESS;
+}
+
+static inline QDF_STATUS wmi_ext_dbgfs_deinit(struct wmi_unified *wmi_handle)
+{
+	return QDF_STATUS_SUCCESS;
+}
+
 #endif /*WMI_EXT_DBG */
 
 /**
@@ -2652,6 +2692,10 @@ void *wmi_unified_get_pdev_handle(struct wmi_soc *soc, uint32_t pdev_idx)
 		wmi_handle->target_type = soc->target_type;
 		wmi_handle->wmi_max_cmds = soc->wmi_max_cmds;
 
+		if (wmi_ext_dbgfs_init(wmi_handle, pdev_idx) !=
+		    QDF_STATUS_SUCCESS)
+			WMI_LOGE("failed to initialize wmi extended debugfs");
+
 		soc->wmi_pdev[pdev_idx] = wmi_handle;
 	} else
 		wmi_handle = soc->wmi_pdev[pdev_idx];
@@ -2799,7 +2843,7 @@ void *wmi_unified_attach(void *scn_handle,
 
 	soc->ops = wmi_handle->ops;
 	soc->wmi_pdev[0] = wmi_handle;
-	if (wmi_ext_dbgfs_init(wmi_handle) != QDF_STATUS_SUCCESS)
+	if (wmi_ext_dbgfs_init(wmi_handle, 0) != QDF_STATUS_SUCCESS)
 		WMI_LOGE("failed to initialize wmi extended debugfs");
 
 	wmi_wbuff_register(wmi_handle);
@@ -2832,8 +2876,6 @@ void wmi_unified_detach(struct wmi_unified *wmi_handle)
 
 	wmi_wbuff_deregister(wmi_handle);
 
-	wmi_ext_dbgfs_deinit(wmi_handle);
-
 	soc = wmi_handle->soc;
 	for (i = 0; i < WMI_MAX_RADIOS; i++) {
 		if (soc->wmi_pdev[i]) {
@@ -2858,6 +2900,9 @@ void wmi_unified_detach(struct wmi_unified *wmi_handle)
 					soc->wmi_pdev[i]->events_logs_list);
 
 			qdf_spinlock_destroy(&soc->wmi_pdev[i]->eventq_lock);
+
+			wmi_ext_dbgfs_deinit(soc->wmi_pdev[i]);
+
 			qdf_mem_free(soc->wmi_pdev[i]);
 		}
 	}