--- if_dwxe.c.orig	Sat Nov 27 05:43:18 2021
+++ if_dwxe.c	Sat Nov 27 14:03:26 2021
@@ -446,6 +446,16 @@ dwxe_attach(struct device *parent, struct device *self
 
 	ifmedia_init(&sc->sc_media, 0, dwxe_media_change, dwxe_media_status);
 
+{
+	int p, r;
+	for (p = 0; p < 32; p++) {
+		printf("%02x:", p);
+		for (r = 0; r < 32; r++) {
+			printf(" %04x", dwxe_mii_readreg(self, p, r));
+		}
+		printf("\n");
+	}
+}
 	dwxe_reset(sc);
 
 	mii_attach(self, &sc->sc_mii, 0xffffffff, sc->sc_phyloc,