+#define XEON_GEN4_PPD_CONN_MASK 0x0300
+#define XEON_GEN4_PPD_CONN_B2B 0x0200
+#define XEON_GEN4_PPD_DEV_MASK 0x1000
+#define XEON_GEN4_PPD_DEV_DSD 0x1000
+#define XEON_GEN4_PPD_DEV_USD 0x0000
+#define XEON_GEN4_PPD_LINKTRN 0x0008
+#define XEON_GEN4_SLOTSTS 0xb05a
+#define XEON_GEN4_SLOTSTS_DLLSCS 0x100