diff --git a/sys/dev/isp/ispreg.h b/sys/dev/isp/ispreg.h
index 0dd517b1a5e1..d50cdf76cb0d 100644
--- a/sys/dev/isp/ispreg.h
+++ b/sys/dev/isp/ispreg.h
@@ -349,6 +349,19 @@
 
 #define	MAX_MAILBOX	8
 
+/*
+ * Fibre Protocol Module and Frame Buffer Register Offsets/Definitions (2X00).
+ * NB: The RISC processor must be paused and the appropriate register
+ * bank selected via BIU2100_CSR bits.
+ */
+
+#define	FPM_DIAG_CONFIG	(BIU_BLOCK + 0x96)
+#define		FPM_SOFT_RESET		0x0100
+
+#define	FBM_CMD		(BIU_BLOCK + 0xB8)
+#define		FBMCMD_FIFO_RESET_ALL	0xA000
+
+
 /*
  * SXP Block Register Offsets
  */
@@ -601,6 +614,10 @@
 #define	HCCR_CMD_PAUSE			0x2000	/* Pause RISC */
 #define	HCCR_CMD_RELEASE		0x3000	/* Release Paused RISC */
 #define	HCCR_CMD_STEP			0x4000	/* Single Step RISC */
+#define	HCCR_2X00_DISABLE_PARITY_PAUSE	0x4001	/*
+						 * Disable RISC pause on FPM
+						 * parity error.
+						 */
 #define	HCCR_CMD_SET_HOST_INT		0x5000	/* Set Host Interrupt */
 #define	HCCR_CMD_CLEAR_HOST_INT		0x6000	/* Clear Host Interrupt */
 #define	HCCR_CMD_CLEAR_RISC_INT		0x7000	/* Clear RISC interrupt */