1 files changed, 35 insertions, 0 deletions

diff --git a/drivers/thunderbolt/tb.h b/drivers/thunderbolt/tb.h
new file mode 100644
index 000000000000..6055dfd713fc
--- /dev/null
+++ b/drivers/thunderbolt/tb.h
@@ -0,0 +1,35 @@
+/*
+ * Thunderbolt Cactus Ridge driver - bus logic (NHI independent)
+ *
+ * Copyright (c) 2014 Andreas Noever <andreas.noever@gmail.com>
+ */
+
+#ifndef TB_H_
+#define TB_H_
+
+#include "ctl.h"
+
+/**
+ * struct tb - main thunderbolt bus structure
+ */
+struct tb {
+        struct mutex lock;      /*
+                                 * Big lock. Must be held when accessing cfg or
+                                 * any struct tb_switch / struct tb_port.
+                                 */
+        struct tb_nhi *nhi;
+        struct tb_ctl *ctl;
+        struct workqueue_struct *wq; /* ordered workqueue for plug events */
+        bool hotplug_active; /*
+                              * tb_handle_hotplug will stop progressing plug
+                              * events and exit if this is not set (it needs to
+                              * acquire the lock one more time). Used to drain
+                              * wq after cfg has been paused.
+                              */
+
+};
+
+struct tb *thunderbolt_alloc_and_start(struct tb_nhi *nhi);
+void thunderbolt_shutdown_and_free(struct tb *tb);
+
+#endif