diff --git a/sys/dev/xl/if_xl.c b/sys/dev/xl/if_xl.c
index 03a711459f13..51e01f24575a 100644
--- a/sys/dev/xl/if_xl.c
+++ b/sys/dev/xl/if_xl.c
@@ -2969,7 +2969,7 @@ xl_init_locked(struct xl_softc *sc)
 
 	/* Set the RX early threshold */
 	CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_RX_SET_THRESH|(XL_PACKET_SIZE >>2));
-	CSR_WRITE_2(sc, XL_DMACTL, XL_DMACTL_UP_RX_EARLY);
+	CSR_WRITE_4(sc, XL_DMACTL, XL_DMACTL_UP_RX_EARLY);
 
 	/* Enable receiver and transmitter. */
 	CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_TX_ENABLE);
diff --git a/sys/dev/xl/if_xlreg.h b/sys/dev/xl/if_xlreg.h
index 28b956bbbc1d..f5494f55650f 100644
--- a/sys/dev/xl/if_xlreg.h
+++ b/sys/dev/xl/if_xlreg.h
@@ -124,6 +124,11 @@
 #define XL_DMACTL_DOWN_INPROG		0x00000080
 #define XL_DMACTL_COUNTER_SPEED		0x00000100
 #define XL_DMACTL_DOWNDOWN_MODE		0x00000200
+#define XL_DMACTL_UP_ALTSEQ_DIS		0x00010000	/* 3c90xB/3c90xC */
+#define XL_DMACTL_DOWN_ALTSEQ_DIS	0x00020000	/* 3c90xC only */
+#define XL_DMACTL_DEFEAT_MWI		0x00100000	/* 3c90xB/3c90xC */
+#define XL_DMACTL_DEFEAT_MRL		0x00100000	/* 3c90xB/3c90xC */
+#define XL_DMACTL_UP_OVERRUN_DISC_DIS	0x00200000	/* 3c90xB/3c90xC */
 #define XL_DMACTL_TARGET_ABORT		0x40000000
 #define XL_DMACTL_MASTER_ABORT		0x80000000