diff --git a/sys/dev/pci/pcireg.h b/sys/dev/pci/pcireg.h
index 981d1e0cde4e..54ed1f3124df 100644
--- a/sys/dev/pci/pcireg.h
+++ b/sys/dev/pci/pcireg.h
@@ -605,9 +605,17 @@
 #define	PCIR_EXPRESS_DEVICE_CAP	0x4
 #define	PCIM_EXP_CAP_MAX_PAYLOAD	0x0007
 #define	PCIR_EXPRESS_DEVICE_CTL	0x8
+#define	PCIM_EXP_CTL_RELAXED_ORD_ENABLE	0x0010
 #define	PCIM_EXP_CTL_MAX_PAYLOAD	0x00e0
+#define	PCIM_EXP_CTL_NOSNOOP_ENABLE	0x0800
 #define	PCIM_EXP_CTL_MAX_READ_REQUEST	0x7000
 #define	PCIR_EXPRESS_DEVICE_STA	0xa
+#define	PCIM_EXP_STA_CORRECTABLE_ERROR	0x0001
+#define	PCIM_EXP_STA_NON_FATAL_ERROR	0x0002
+#define	PCIM_EXP_STA_FATAL_ERROR	0x0004
+#define	PCIM_EXP_STA_UNSUPPORTED_REQ	0x0008
+#define	PCIM_EXP_STA_AUX_POWER		0x0010
+#define	PCIM_EXP_STA_TRANSACTION_PND	0x0020
 #define	PCIR_EXPRESS_LINK_CAP	0xc
 #define	PCIM_LINK_CAP_MAX_SPEED		0x0000000f
 #define	PCIM_LINK_CAP_MAX_WIDTH		0x000003f0