+/* Field definitions in Slot Capabilities Register */
+#define ATTN_BUTTN_PRSN 0x00000001
+#define PWR_CTRL_PRSN 0x00000002
+#define MRL_SENS_PRSN 0x00000004
+#define ATTN_LED_PRSN 0x00000008
+#define PWR_LED_PRSN 0x00000010
+#define HP_SUPR_RM_SUP 0x00000020
+
+#define ATTN_BUTTN(cap) (cap & ATTN_BUTTN_PRSN)
+#define POWER_CTRL(cap) (cap & PWR_CTRL_PRSN)
+#define MRL_SENS(cap) (cap & MRL_SENS_PRSN)
+#define ATTN_LED(cap) (cap & ATTN_LED_PRSN)
+#define PWR_LED(cap) (cap & PWR_LED_PRSN)
+#define HP_SUPR_RM(cap) (cap & HP_SUPR_RM_SUP)
+