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-rw-r--r--drivers/thunderbolt/tb.h35
1 files changed, 35 insertions, 0 deletions
diff --git a/drivers/thunderbolt/tb.h b/drivers/thunderbolt/tb.h
new file mode 100644
index 00000000000..6055dfd713f
--- /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