Index: head/sys/dev/sfxge/common/ef10_impl.h
===================================================================
--- head/sys/dev/sfxge/common/ef10_impl.h
+++ head/sys/dev/sfxge/common/ef10_impl.h
@@ -37,6 +37,13 @@
 extern "C" {
 #endif
 
+#if (EFSYS_OPT_HUNTINGTON && EFSYS_OPT_MEDFORD)
+#define	EF10_MAX_PIOBUF_NBUFS	MAX(HUNT_PIOBUF_NBUFS, MEDFORD_PIOBUF_NBUFS)
+#elif EFSYS_OPT_HUNTINGTON
+#define	EF10_MAX_PIOBUF_NBUFS	HUNT_PIOBUF_NBUFS
+#elif EFSYS_OPT_MEDFORD
+#define	EF10_MAX_PIOBUF_NBUFS	MEDFORD_PIOBUF_NBUFS
+#endif
 
 
 
Index: head/sys/dev/sfxge/common/efx_impl.h
===================================================================
--- head/sys/dev/sfxge/common/efx_impl.h
+++ head/sys/dev/sfxge/common/efx_impl.h
@@ -672,26 +672,29 @@
 			int			enu_unused;
 		} siena;
 #endif	/* EFSYS_OPT_SIENA */
-#if EFSYS_OPT_HUNTINGTON
+		int	enu_unused;
+	} en_u;
+#if (EFSYS_OPT_HUNTINGTON || EFSYS_OPT_MEDFORD)
+	union en_arch {
 		struct {
-			int			enu_vi_base;
-			int			enu_vi_count;
+			int			ena_vi_base;
+			int			ena_vi_count;
 #if EFSYS_OPT_VPD
-			caddr_t			enu_svpd;
-			size_t			enu_svpd_length;
+			caddr_t			ena_svpd;
+			size_t			ena_svpd_length;
 #endif	/* EFSYS_OPT_VPD */
-			efx_piobuf_handle_t	enu_piobuf_handle[HUNT_PIOBUF_NBUFS];
-			uint32_t		enu_piobuf_count;
-			uint32_t		enu_pio_alloc_map[HUNT_PIOBUF_NBUFS];
-			uint32_t		enu_pio_write_vi_base;
+			efx_piobuf_handle_t	ena_piobuf_handle[EF10_MAX_PIOBUF_NBUFS];
+			uint32_t		ena_piobuf_count;
+			uint32_t		ena_pio_alloc_map[EF10_MAX_PIOBUF_NBUFS];
+			uint32_t		ena_pio_write_vi_base;
 			/* Memory BAR mapping regions */
-			uint32_t		enu_uc_mem_map_offset;
-			size_t			enu_uc_mem_map_size;
-			uint32_t		enu_wc_mem_map_offset;
-			size_t			enu_wc_mem_map_size;
-		} hunt;
-#endif	/* EFSYS_OPT_HUNTINGTON */
-	} en_u;
+			uint32_t		ena_uc_mem_map_offset;
+			size_t			ena_uc_mem_map_size;
+			uint32_t		ena_wc_mem_map_offset;
+			size_t			ena_wc_mem_map_size;
+		} ef10;
+	} en_arch;
+#endif	/* (EFSYS_OPT_HUNTINGTON || EFSYS_OPT_MEDFORD) */
 };
 
 
Index: head/sys/dev/sfxge/common/hunt_nic.c
===================================================================
--- head/sys/dev/sfxge/common/hunt_nic.c
+++ head/sys/dev/sfxge/common/hunt_nic.c
@@ -715,30 +715,30 @@
 	efx_rc_t rc;
 
 	EFSYS_ASSERT3U(max_piobuf_count, <=,
-	    EFX_ARRAY_SIZE(enp->en_u.hunt.enu_piobuf_handle));
+	    EFX_ARRAY_SIZE(enp->en_arch.ef10.ena_piobuf_handle));
 
-	enp->en_u.hunt.enu_piobuf_count = 0;
+	enp->en_arch.ef10.ena_piobuf_count = 0;
 
 	for (i = 0; i < max_piobuf_count; i++) {
-		handlep = &enp->en_u.hunt.enu_piobuf_handle[i];
+		handlep = &enp->en_arch.ef10.ena_piobuf_handle[i];
 
 		if ((rc = efx_mcdi_alloc_piobuf(enp, handlep)) != 0)
 			goto fail1;
 
-		enp->en_u.hunt.enu_pio_alloc_map[i] = 0;
-		enp->en_u.hunt.enu_piobuf_count++;
+		enp->en_arch.ef10.ena_pio_alloc_map[i] = 0;
+		enp->en_arch.ef10.ena_piobuf_count++;
 	}
 
 	return;
 
 fail1:
-	for (i = 0; i < enp->en_u.hunt.enu_piobuf_count; i++) {
-		handlep = &enp->en_u.hunt.enu_piobuf_handle[i];
+	for (i = 0; i < enp->en_arch.ef10.ena_piobuf_count; i++) {
+		handlep = &enp->en_arch.ef10.ena_piobuf_handle[i];
 
 		efx_mcdi_free_piobuf(enp, *handlep);
 		*handlep = EFX_PIOBUF_HANDLE_INVALID;
 	}
-	enp->en_u.hunt.enu_piobuf_count = 0;
+	enp->en_arch.ef10.ena_piobuf_count = 0;
 }
 
 
@@ -749,13 +749,13 @@
 	efx_piobuf_handle_t *handlep;
 	unsigned int i;
 
-	for (i = 0; i < enp->en_u.hunt.enu_piobuf_count; i++) {
-		handlep = &enp->en_u.hunt.enu_piobuf_handle[i];
+	for (i = 0; i < enp->en_arch.ef10.ena_piobuf_count; i++) {
+		handlep = &enp->en_arch.ef10.ena_piobuf_handle[i];
 
 		efx_mcdi_free_piobuf(enp, *handlep);
 		*handlep = EFX_PIOBUF_HANDLE_INVALID;
 	}
-	enp->en_u.hunt.enu_piobuf_count = 0;
+	enp->en_arch.ef10.ena_piobuf_count = 0;
 }
 
 /* Sub-allocate a block from a piobuf */
@@ -781,14 +781,14 @@
 	EFSYS_ASSERT(sizep);
 
 	if ((edcp->edc_pio_alloc_size == 0) ||
-	    (enp->en_u.hunt.enu_piobuf_count == 0)) {
+	    (enp->en_arch.ef10.ena_piobuf_count == 0)) {
 		rc = ENOMEM;
 		goto fail1;
 	}
 	blk_per_buf = HUNT_PIOBUF_SIZE / edcp->edc_pio_alloc_size;
 
-	for (buf = 0; buf < enp->en_u.hunt.enu_piobuf_count; buf++) {
-		uint32_t *map = &enp->en_u.hunt.enu_pio_alloc_map[buf];
+	for (buf = 0; buf < enp->en_arch.ef10.ena_piobuf_count; buf++) {
+		uint32_t *map = &enp->en_arch.ef10.ena_pio_alloc_map[buf];
 
 		if (~(*map) == 0)
 			continue;
@@ -805,7 +805,7 @@
 	goto fail2;
 
 done:
-	*handlep = enp->en_u.hunt.enu_piobuf_handle[buf];
+	*handlep = enp->en_arch.ef10.ena_piobuf_handle[buf];
 	*bufnump = buf;
 	*blknump = blk;
 	*sizep = edcp->edc_pio_alloc_size;
@@ -831,13 +831,13 @@
 	uint32_t *map;
 	efx_rc_t rc;
 
-	if ((bufnum >= enp->en_u.hunt.enu_piobuf_count) ||
+	if ((bufnum >= enp->en_arch.ef10.ena_piobuf_count) ||
 	    (blknum >= (8 * sizeof (*map)))) {
 		rc = EINVAL;
 		goto fail1;
 	}
 
-	map = &enp->en_u.hunt.enu_pio_alloc_map[bufnum];
+	map = &enp->en_arch.ef10.ena_pio_alloc_map[bufnum];
 	if ((*map & (1u << blknum)) == 0) {
 		rc = ENOENT;
 		goto fail2;
@@ -1579,7 +1579,8 @@
 	 * each VI that is using a sub-allocated block from the piobuf.
 	 */
 	min_vi_count = edcp->edc_min_vi_count;
-	max_vi_count = edcp->edc_max_vi_count + enp->en_u.hunt.enu_piobuf_count;
+	max_vi_count =
+	    edcp->edc_max_vi_count + enp->en_arch.ef10.ena_piobuf_count;
 
 	/* Ensure that the previously attached driver's VIs are freed */
 	if ((rc = efx_mcdi_free_vis(enp)) != 0)
@@ -1601,44 +1602,44 @@
 		goto fail4;
 	}
 
-	enp->en_u.hunt.enu_vi_base = vi_base;
-	enp->en_u.hunt.enu_vi_count = vi_count;
+	enp->en_arch.ef10.ena_vi_base = vi_base;
+	enp->en_arch.ef10.ena_vi_count = vi_count;
 
-	if (vi_count < min_vi_count + enp->en_u.hunt.enu_piobuf_count) {
+	if (vi_count < min_vi_count + enp->en_arch.ef10.ena_piobuf_count) {
 		/* Not enough extra VIs to map piobufs */
 		hunt_nic_free_piobufs(enp);
 	}
 
-	enp->en_u.hunt.enu_pio_write_vi_base =
-	    vi_count - enp->en_u.hunt.enu_piobuf_count;
+	enp->en_arch.ef10.ena_pio_write_vi_base =
+	    vi_count - enp->en_arch.ef10.ena_piobuf_count;
 
 	/* Save UC memory mapping details */
-	enp->en_u.hunt.enu_uc_mem_map_offset = 0;
-	if (enp->en_u.hunt.enu_piobuf_count > 0) {
-		enp->en_u.hunt.enu_uc_mem_map_size =
+	enp->en_arch.ef10.ena_uc_mem_map_offset = 0;
+	if (enp->en_arch.ef10.ena_piobuf_count > 0) {
+		enp->en_arch.ef10.ena_uc_mem_map_size =
 		    (ER_DZ_TX_PIOBUF_STEP *
-		    enp->en_u.hunt.enu_pio_write_vi_base);
+		    enp->en_arch.ef10.ena_pio_write_vi_base);
 	} else {
-		enp->en_u.hunt.enu_uc_mem_map_size =
+		enp->en_arch.ef10.ena_uc_mem_map_size =
 		    (ER_DZ_TX_PIOBUF_STEP *
-		    enp->en_u.hunt.enu_vi_count);
+		    enp->en_arch.ef10.ena_vi_count);
 	}
 
 	/* Save WC memory mapping details */
-	enp->en_u.hunt.enu_wc_mem_map_offset =
-	    enp->en_u.hunt.enu_uc_mem_map_offset +
-	    enp->en_u.hunt.enu_uc_mem_map_size;
+	enp->en_arch.ef10.ena_wc_mem_map_offset =
+	    enp->en_arch.ef10.ena_uc_mem_map_offset +
+	    enp->en_arch.ef10.ena_uc_mem_map_size;
 
-	enp->en_u.hunt.enu_wc_mem_map_size =
+	enp->en_arch.ef10.ena_wc_mem_map_size =
 	    (ER_DZ_TX_PIOBUF_STEP *
-	    enp->en_u.hunt.enu_piobuf_count);
+	    enp->en_arch.ef10.ena_piobuf_count);
 
 	/* Link piobufs to extra VIs in WC mapping */
-	if (enp->en_u.hunt.enu_piobuf_count > 0) {
-		for (i = 0; i < enp->en_u.hunt.enu_piobuf_count; i++) {
+	if (enp->en_arch.ef10.ena_piobuf_count > 0) {
+		for (i = 0; i < enp->en_arch.ef10.ena_piobuf_count; i++) {
 			rc = efx_mcdi_link_piobuf(enp,
-			    enp->en_u.hunt.enu_pio_write_vi_base + i,
-			    enp->en_u.hunt.enu_piobuf_handle[i]);
+			    enp->en_arch.ef10.ena_pio_write_vi_base + i,
+			    enp->en_arch.ef10.ena_piobuf_handle[i]);
 			if (rc != 0)
 				break;
 		}
@@ -1715,7 +1716,7 @@
 	 * Report VIs that the client driver can use.
 	 * Do not include VIs used for PIO buffer writes.
 	 */
-	*vi_countp = enp->en_u.hunt.enu_pio_write_vi_base;
+	*vi_countp = enp->en_arch.ef10.ena_pio_write_vi_base;
 
 	return (0);
 }
@@ -1739,14 +1740,14 @@
 	switch (region) {
 	case EFX_REGION_VI:
 		/* UC mapped memory BAR region for VI registers */
-		*offsetp = enp->en_u.hunt.enu_uc_mem_map_offset;
-		*sizep = enp->en_u.hunt.enu_uc_mem_map_size;
+		*offsetp = enp->en_arch.ef10.ena_uc_mem_map_offset;
+		*sizep = enp->en_arch.ef10.ena_uc_mem_map_size;
 		break;
 
 	case EFX_REGION_PIO_WRITE_VI:
 		/* WC mapped memory BAR region for piobuf writes */
-		*offsetp = enp->en_u.hunt.enu_wc_mem_map_offset;
-		*sizep = enp->en_u.hunt.enu_wc_mem_map_size;
+		*offsetp = enp->en_arch.ef10.ena_wc_mem_map_offset;
+		*sizep = enp->en_arch.ef10.ena_wc_mem_map_size;
 		break;
 
 	default:
@@ -1773,10 +1774,10 @@
 	enp->en_vport_id = 0;
 
 	/* Unlink piobufs from extra VIs in WC mapping */
-	if (enp->en_u.hunt.enu_piobuf_count > 0) {
-		for (i = 0; i < enp->en_u.hunt.enu_piobuf_count; i++) {
+	if (enp->en_arch.ef10.ena_piobuf_count > 0) {
+		for (i = 0; i < enp->en_arch.ef10.ena_piobuf_count; i++) {
 			rc = efx_mcdi_unlink_piobuf(enp,
-			    enp->en_u.hunt.enu_pio_write_vi_base + i);
+			    enp->en_arch.ef10.ena_pio_write_vi_base + i);
 			if (rc != 0)
 				break;
 		}
@@ -1785,7 +1786,7 @@
 	hunt_nic_free_piobufs(enp);
 
 	(void) efx_mcdi_free_vis(enp);
-	enp->en_u.hunt.enu_vi_count = 0;
+	enp->en_arch.ef10.ena_vi_count = 0;
 }
 
 			void
Index: head/sys/dev/sfxge/common/hunt_vpd.c
===================================================================
--- head/sys/dev/sfxge/common/hunt_vpd.c
+++ head/sys/dev/sfxge/common/hunt_vpd.c
@@ -81,8 +81,8 @@
 			goto fail2;
 	}
 
-	enp->en_u.hunt.enu_svpd = svpd;
-	enp->en_u.hunt.enu_svpd_length = svpd_size;
+	enp->en_arch.ef10.ena_svpd = svpd;
+	enp->en_arch.ef10.ena_svpd_length = svpd_size;
 
 out:
 	return (0);
@@ -197,7 +197,7 @@
 	 * Verify that there is no duplication between the static and
 	 * dynamic cfg sectors.
 	 */
-	if (enp->en_u.hunt.enu_svpd_length == 0)
+	if (enp->en_arch.ef10.ena_svpd_length == 0)
 		goto done;
 
 	dcont = 0;
@@ -213,8 +213,8 @@
 		_NOTE(CONSTANTCONDITION)
 		while (1) {
 			if ((rc = efx_vpd_hunk_next(
-			    enp->en_u.hunt.enu_svpd,
-			    enp->en_u.hunt.enu_svpd_length, &stag, &skey,
+			    enp->en_arch.ef10.ena_svpd,
+			    enp->en_arch.ef10.ena_svpd_length, &stag, &skey,
 			    NULL, NULL, &scont)) != 0)
 				goto fail3;
 			if (scont == 0)
@@ -254,14 +254,14 @@
 	/*
 	 * Only create an ID string if the dynamic cfg doesn't have one
 	 */
-	if (enp->en_u.hunt.enu_svpd_length == 0)
+	if (enp->en_arch.ef10.ena_svpd_length == 0)
 		wantpid = B_TRUE;
 	else {
 		unsigned int offset;
 		uint8_t length;
 
-		rc = efx_vpd_hunk_get(enp->en_u.hunt.enu_svpd,
-				    enp->en_u.hunt.enu_svpd_length,
+		rc = efx_vpd_hunk_get(enp->en_arch.ef10.ena_svpd,
+				    enp->en_arch.ef10.ena_svpd_length,
 				    EFX_VPD_ID, 0, &offset, &length);
 		if (rc == 0)
 			wantpid = B_FALSE;
@@ -298,13 +298,13 @@
 	EFSYS_ASSERT(enp->en_family == EFX_FAMILY_HUNTINGTON);
 
 	/* Attempt to satisfy the request from svpd first */
-	if (enp->en_u.hunt.enu_svpd_length > 0) {
-		if ((rc = efx_vpd_hunk_get(enp->en_u.hunt.enu_svpd,
-		    enp->en_u.hunt.enu_svpd_length, evvp->evv_tag,
+	if (enp->en_arch.ef10.ena_svpd_length > 0) {
+		if ((rc = efx_vpd_hunk_get(enp->en_arch.ef10.ena_svpd,
+		    enp->en_arch.ef10.ena_svpd_length, evvp->evv_tag,
 		    evvp->evv_keyword, &offset, &length)) == 0) {
 			evvp->evv_length = length;
 			memcpy(evvp->evv_value,
-			    enp->en_u.hunt.enu_svpd + offset, length);
+			    enp->en_arch.ef10.ena_svpd + offset, length);
 			return (0);
 		} else if (rc != ENOENT)
 			goto fail1;
@@ -340,12 +340,12 @@
 	EFSYS_ASSERT(enp->en_family == EFX_FAMILY_HUNTINGTON);
 
 	/* If the provided (tag,keyword) exists in svpd, then it is readonly */
-	if (enp->en_u.hunt.enu_svpd_length > 0) {
+	if (enp->en_arch.ef10.ena_svpd_length > 0) {
 		unsigned int offset;
 		uint8_t length;
 
-		if ((rc = efx_vpd_hunk_get(enp->en_u.hunt.enu_svpd,
-		    enp->en_u.hunt.enu_svpd_length, evvp->evv_tag,
+		if ((rc = efx_vpd_hunk_get(enp->en_arch.ef10.ena_svpd,
+		    enp->en_arch.ef10.ena_svpd_length, evvp->evv_tag,
 		    evvp->evv_keyword, &offset, &length)) == 0) {
 			rc = EACCES;
 			goto fail1;
@@ -421,12 +421,12 @@
 {
 	EFSYS_ASSERT(enp->en_family == EFX_FAMILY_HUNTINGTON);
 
-	if (enp->en_u.hunt.enu_svpd_length > 0) {
-		EFSYS_KMEM_FREE(enp->en_esip, enp->en_u.hunt.enu_svpd_length,
-				enp->en_u.hunt.enu_svpd);
+	if (enp->en_arch.ef10.ena_svpd_length > 0) {
+		EFSYS_KMEM_FREE(enp->en_esip, enp->en_arch.ef10.ena_svpd_length,
+				enp->en_arch.ef10.ena_svpd);
 
-		enp->en_u.hunt.enu_svpd = NULL;
-		enp->en_u.hunt.enu_svpd_length = 0;
+		enp->en_arch.ef10.ena_svpd = NULL;
+		enp->en_arch.ef10.ena_svpd_length = 0;
 	}
 }
 
Index: head/sys/dev/sfxge/common/medford_impl.h
===================================================================
--- head/sys/dev/sfxge/common/medford_impl.h
+++ head/sys/dev/sfxge/common/medford_impl.h
@@ -37,7 +37,7 @@
 extern "C" {
 #endif
 
-
+#define	MEDFORD_PIOBUF_NBUFS	(16)
 
 
 #ifdef	__cplusplus