1 files changed, 3 insertions, 0 deletions
diff --git a/tpu.h b/tpu.h
index 1805d7c..e18b3ed 100644
--- a/tpu.h
+++ b/tpu.h
@@ -73,6 +73,9 @@ struct tpu_port {
 	struct tpu *tpu;
 	enum tpu_port_type type;
 
+	/* set only if managed by io port */
+	struct tpu_io_port *io;
+
 	/* NOTE: dont access dst_port during execution,
 	 * values are transfered in post execution phase */
 	struct tpu_port *dst_port;