diff --git a/sys/dev/isp/ispmbox.h b/sys/dev/isp/ispmbox.h
index ce2fe06c68e0..8d01c61fc4a9 100644
--- a/sys/dev/isp/ispmbox.h
+++ b/sys/dev/isp/ispmbox.h
@@ -109,6 +109,9 @@
 
 #define	MBOX_ENABLE_TARGET_MODE		0x55
 #define		ENABLE_TARGET_FLAG	0x8000
+#define		ENABLE_TQING_FLAG	0x0004
+#define		ENABLE_MANDATORY_DISC	0x0002
+#define	MBOX_GET_TARGET_STATUS		0x56
 
 /* These are for the ISP2100 FC cards */
 #define	MBOX_GET_LOOP_ID		0x20
@@ -481,6 +484,16 @@ typedef struct {
 #define	ISP_EXEC_THROTTLE	16
 #endif
 
+/*
+ * About Firmware returns an 'attribute' word in mailbox 6.
+ */
+#define	ISP_FW_ATTR_TMODE	0x01
+#define	ISP_FW_ATTR_SCCLUN	0x02
+#define	ISP_FW_ATTR_FABRIC	0x04
+#define	ISP_FW_ATTR_CLASS2	0x08
+#define	ISP_FW_ATTR_FCTAPE	0x10
+#define	ISP_FW_ATTR_IP		0x20
+
 /*
  * FC (ISP2100) specific data structures
  */