diff --git a/sys/dev/disk/ahci/ahci.c b/sys/dev/disk/ahci/ahci.c
index f1111e1..5a6816d 100644
--- a/sys/dev/disk/ahci/ahci.c
+++ b/sys/dev/disk/ahci/ahci.c
@@ -608,6 +608,26 @@ ahci_port_link_pwr_mgmt(struct ahci_port *ap, int link_pwr_mgmt)
 	ahci_os_unlock_port(ap);
 }
 
+/*
+ * Return current link power state.
+ */
+int
+ahci_port_link_pwr_state(struct ahci_port *ap)
+{
+	uint32_t r;
+
+	r = ahci_pread(ap, AHCI_PREG_SSTS);
+	switch (r & SATA_PM_SSTS_IPM) {
+	case SATA_PM_SSTS_IPM_ACTIVE:
+		return 1;
+	case SATA_PM_SSTS_IPM_PARTIAL:
+		return 2;
+	case SATA_PM_SSTS_IPM_SLUMBER:
+		return 3;
+	default:
+		return 0;
+	}
+}
 
 /*
  * Run the port / target state machine from a main context.
diff --git a/sys/dev/disk/ahci/ahci.h b/sys/dev/disk/ahci/ahci.h
index 123d681..ee02a85 100644
--- a/sys/dev/disk/ahci/ahci.h
+++ b/sys/dev/disk/ahci/ahci.h
@@ -507,6 +507,7 @@ void	ahci_port_state_machine(struct ahci_port *ap, int initial);
 void	ahci_port_free(struct ahci_softc *, u_int);
 int	ahci_port_reset(struct ahci_port *, struct ata_port *at, int);
 void	ahci_port_link_pwr_mgmt(struct ahci_port *, int link_pwr_mgmt);
+int	ahci_port_link_pwr_state(struct ahci_port *);
 
 u_int32_t ahci_read(struct ahci_softc *, bus_size_t);
 void	ahci_write(struct ahci_softc *, bus_size_t, u_int32_t);
diff --git a/sys/dev/disk/ahci/ahci_dragonfly.c b/sys/dev/disk/ahci/ahci_dragonfly.c
index 633fdb7..c17ffd8 100644
--- a/sys/dev/disk/ahci/ahci_dragonfly.c
+++ b/sys/dev/disk/ahci/ahci_dragonfly.c
@@ -163,6 +163,22 @@ ahci_systcl_link_pwr_mgmt (SYSCTL_HANDLER_ARGS)
 	return 0;
 }
 
+static int
+ahci_sysctl_link_pwr_state (SYSCTL_HANDLER_ARGS)
+{
+	struct ahci_port *ap = arg1;
+	const char *state_names[] = {"unknown", "active", "partial", "slumber"};
+	char buf[16];
+	int state;
+
+	state = ahci_port_link_pwr_state(ap);
+	if (state < 0 || state >= sizeof(state_names) / sizeof(state_names[0]))
+		state = 0;
+
+	ksnprintf(buf, sizeof(buf), "%s", state_names[state]);
+	return sysctl_handle_string(oidp, buf, sizeof(buf), req);
+}
+
 #if 0
 
 static int
@@ -241,8 +257,13 @@ ahci_os_start_port(struct ahci_port *ap)
 			SYSCTL_CHILDREN(ap->sysctl_tree), OID_AUTO,
 			"link_pwr_mgmt", CTLTYPE_INT | CTLFLAG_RW, ap, 0,
 			ahci_systcl_link_pwr_mgmt, "I",
-			"Link power management "
+			"Link power management policy "
 			"(0 = disabled, 1 = medium, 2 = aggressive)");
+		SYSCTL_ADD_PROC(&ap->sysctl_ctx,
+			SYSCTL_CHILDREN(ap->sysctl_tree), OID_AUTO,
+			"link_pwr_state", CTLTYPE_STRING | CTLFLAG_RD, ap, 0,
+			ahci_sysctl_link_pwr_state, "A",
+			"Link power management state");
 
 	}