diff -r -N -u -w oss-2.4/linux/drivers/net/tulip/interrupt.c oss-2.4-ddb5074/linux/drivers/net//tulip/interrupt.c
--- oss-2.4/linux/drivers/net/tulip/interrupt.c	Sun Dec  2 12:34:45 2001
+++ oss-2.4-ddb5074/linux/drivers/net//tulip/interrupt.c	Tue Jul  9 13:18:13 2002
@@ -186,6 +186,10 @@
 				       tp->rx_buffers[entry].skb->tail,
 				       pkt_len);
 #endif
+#if defined(__mips__)
+                dma_cache_inv((unsigned long)bus_to_virt(tp->rx_ring[entry].buffer1),pkt_len);
+#endif
+
 			} else { 	/* Pass up the skb already on the Rx ring. */
 				char *temp = skb_put(skb = tp->rx_buffers[entry].skb,
 						     pkt_len);
diff -r -N -u -w oss-2.4/linux/drivers/net/tulip/tulip_core.c oss-2.4-ddb5074/linux/drivers/net//tulip/tulip_core.c
--- oss-2.4/linux/drivers/net/tulip/tulip_core.c	Thu Jun 27 00:36:01 2002
+++ oss-2.4-ddb5074/linux/drivers/net//tulip/tulip_core.c	Tue Jul  9 13:31:04 2002
@@ -339,6 +339,11 @@
 		tp->tx_buffers[tp->cur_tx].skb = NULL;
 		tp->tx_buffers[tp->cur_tx].mapping = mapping;
 
+#if defined(__mips__)
+        dma_cache_wback_inv((unsigned long)tp->setup_frame,
+                            sizeof(tp->setup_frame));
+#endif
+
 		/* Put the setup frame on the Tx list. */
 		tp->tx_ring[tp->cur_tx].length = cpu_to_le32(0x08000000 | 192);
 		tp->tx_ring[tp->cur_tx].buffer1 = cpu_to_le32(mapping);
@@ -683,6 +688,11 @@
 					 PKT_BUF_SZ, PCI_DMA_FROMDEVICE);
 		tp->rx_buffers[i].mapping = mapping;
 		skb->dev = dev;			/* Mark as being used by this device. */
+#if defined(__mips__)
+        /* Kick out any matching lines in the cache. */
+        dma_cache_inv((unsigned long)skb->tail, PKT_BUF_SZ);
+#endif
+
 		tp->rx_ring[i].status = cpu_to_le32(DescOwned);	/* Owned by Tulip chip */
 		tp->rx_ring[i].buffer1 = cpu_to_le32(mapping);
 	}
@@ -736,6 +746,9 @@
 	/* if we were using Transmit Automatic Polling, we would need a
 	 * wmb() here. */
 	tp->tx_ring[entry].status = cpu_to_le32(DescOwned);
+#if defined(__mips__)
+	dma_cache_wback_inv((unsigned long)skb->data, skb->len);
+#endif
 	wmb();
 
 	tp->cur_tx++;
@@ -1568,6 +1581,15 @@
                        tp->flags &= ~HAS_MEDIA_TABLE;
                }
 #endif
+#ifdef CONFIG_DDB5074
+               if ((pdev->bus->number == 0) && (PCI_SLOT(pdev->devfn) == 1)) {
+                       /* DDB5477 MAC address in first EEPROM locations. */
+                       sa_offset = 0;
+					   /* No media table either */
+					   tp->flags &= ~HAS_MEDIA_TABLE;
+				}
+#endif
+
 #ifdef CONFIG_MIPS_COBALT
                if ((pdev->bus->number == 0) && 
                    ((PCI_SLOT(pdev->devfn) == 7) ||