Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 1872 insertions, 0 deletions

diff --git a/drivers/net/dl2k.c b/drivers/net/dl2k.c
new file mode 100644
index 000000000000..aa42b7a27735
--- /dev/null
+++ b/drivers/net/dl2k.c
@@ -0,0 +1,1872 @@
+/*  D-Link DL2000-based Gigabit Ethernet Adapter Linux driver */
+/*
+    Copyright (c) 2001, 2002 by D-Link Corporation
+    Written by Edward Peng.<edward_peng@dlink.com.tw>
+    Created 03-May-2001, base on Linux' sundance.c.
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+*/
+/*
+    Rev		Date		Description
+    ==========================================================================
+    0.01	2001/05/03	Created DL2000-based linux driver
+    0.02	2001/05/21	Added VLAN and hardware checksum support.
+    1.00	2001/06/26	Added jumbo frame support.
+    1.01	2001/08/21	Added two parameters, rx_coalesce and rx_timeout.
+    1.02	2001/10/08	Supported fiber media.
+    				Added flow control parameters.
+    1.03	2001/10/12	Changed the default media to 1000mbps_fd for 
+    				the fiber devices.
+    1.04	2001/11/08	Fixed Tx stopped when tx very busy.
+    1.05	2001/11/22	Fixed Tx stopped when unidirectional tx busy.
+    1.06	2001/12/13	Fixed disconnect bug at 10Mbps mode.
+    				Fixed tx_full flag incorrect.
+				Added tx_coalesce paramter.
+    1.07	2002/01/03	Fixed miscount of RX frame error.
+    1.08	2002/01/17	Fixed the multicast bug.
+    1.09	2002/03/07	Move rx-poll-now to re-fill loop.	
+    				Added rio_timer() to watch rx buffers. 
+    1.10	2002/04/16	Fixed miscount of carrier error.
+    1.11	2002/05/23	Added ISR schedule scheme
+    				Fixed miscount of rx frame error for DGE-550SX.
+    				Fixed VLAN bug.
+    1.12	2002/06/13	Lock tx_coalesce=1 on 10/100Mbps mode.
+    1.13	2002/08/13	1. Fix disconnection (many tx:carrier/rx:frame
+    				   errs) with some mainboards.
+    				2. Use definition "DRV_NAME" "DRV_VERSION" 
+				   "DRV_RELDATE" for flexibility.	
+    1.14	2002/08/14	Support ethtool.	
+    1.15	2002/08/27	Changed the default media to Auto-Negotiation
+				for the fiber devices.    
+    1.16	2002/09/04      More power down time for fiber devices auto-
+    				negotiation.
+				Fix disconnect bug after ifup and ifdown.
+    1.17	2002/10/03	Fix RMON statistics overflow. 
+			     	Always use I/O mapping to access eeprom, 
+				avoid system freezing with some chipsets.
+
+*/
+#define DRV_NAME	"D-Link DL2000-based linux driver"
+#define DRV_VERSION	"v1.17a"
+#define DRV_RELDATE	"2002/10/04"
+#include "dl2k.h"
+
+static char version[] __devinitdata =
+      KERN_INFO DRV_NAME " " DRV_VERSION " " DRV_RELDATE "\n";	
+#define MAX_UNITS 8
+static int mtu[MAX_UNITS];
+static int vlan[MAX_UNITS];
+static int jumbo[MAX_UNITS];
+static char *media[MAX_UNITS];
+static int tx_flow=-1;
+static int rx_flow=-1;
+static int copy_thresh;
+static int rx_coalesce=10;	/* Rx frame count each interrupt */
+static int rx_timeout=200;	/* Rx DMA wait time in 640ns increments */
+static int tx_coalesce=16;	/* HW xmit count each TxDMAComplete */
+
+
+MODULE_AUTHOR ("Edward Peng");
+MODULE_DESCRIPTION ("D-Link DL2000-based Gigabit Ethernet Adapter");
+MODULE_LICENSE("GPL");
+module_param_array(mtu, int, NULL, 0);
+module_param_array(media, charp, NULL, 0);
+module_param_array(vlan, int, NULL, 0);
+module_param_array(jumbo, int, NULL, 0);
+module_param(tx_flow, int, 0);
+module_param(rx_flow, int, 0);
+module_param(copy_thresh, int, 0);
+module_param(rx_coalesce, int, 0);	/* Rx frame count each interrupt */
+module_param(rx_timeout, int, 0);	/* Rx DMA wait time in 64ns increments */
+module_param(tx_coalesce, int, 0); /* HW xmit count each TxDMAComplete */
+
+
+/* Enable the default interrupts */
+#define DEFAULT_INTR (RxDMAComplete | HostError | IntRequested | TxDMAComplete| \
+       UpdateStats | LinkEvent)
+#define EnableInt() \
+writew(DEFAULT_INTR, ioaddr + IntEnable)
+
+static int max_intrloop = 50;
+static int multicast_filter_limit = 0x40;
+
+static int rio_open (struct net_device *dev);
+static void rio_timer (unsigned long data);
+static void rio_tx_timeout (struct net_device *dev);
+static void alloc_list (struct net_device *dev);
+static int start_xmit (struct sk_buff *skb, struct net_device *dev);
+static irqreturn_t rio_interrupt (int irq, void *dev_instance, struct pt_regs *regs);
+static void rio_free_tx (struct net_device *dev, int irq);
+static void tx_error (struct net_device *dev, int tx_status);
+static int receive_packet (struct net_device *dev);
+static void rio_error (struct net_device *dev, int int_status);
+static int change_mtu (struct net_device *dev, int new_mtu);
+static void set_multicast (struct net_device *dev);
+static struct net_device_stats *get_stats (struct net_device *dev);
+static int clear_stats (struct net_device *dev);
+static int rio_ioctl (struct net_device *dev, struct ifreq *rq, int cmd);
+static int rio_close (struct net_device *dev);
+static int find_miiphy (struct net_device *dev);
+static int parse_eeprom (struct net_device *dev);
+static int read_eeprom (long ioaddr, int eep_addr);
+static int mii_wait_link (struct net_device *dev, int wait);
+static int mii_set_media (struct net_device *dev);
+static int mii_get_media (struct net_device *dev);
+static int mii_set_media_pcs (struct net_device *dev);
+static int mii_get_media_pcs (struct net_device *dev);
+static int mii_read (struct net_device *dev, int phy_addr, int reg_num);
+static int mii_write (struct net_device *dev, int phy_addr, int reg_num,
+		      u16 data);
+
+static struct ethtool_ops ethtool_ops;
+
+static int __devinit
+rio_probe1 (struct pci_dev *pdev, const struct pci_device_id *ent)
+{
+	struct net_device *dev;
+	struct netdev_private *np;
+	static int card_idx;
+	int chip_idx = ent->driver_data;
+	int err, irq;
+	long ioaddr;
+	static int version_printed;
+	void *ring_space;
+	dma_addr_t ring_dma;
+
+	if (!version_printed++)
+		printk ("%s", version);
+
+	err = pci_enable_device (pdev);
+	if (err)
+		return err;
+
+	irq = pdev->irq;
+	err = pci_request_regions (pdev, "dl2k");
+	if (err)
+		goto err_out_disable;
+
+	pci_set_master (pdev);
+	dev = alloc_etherdev (sizeof (*np));
+	if (!dev) {
+		err = -ENOMEM;
+		goto err_out_res;
+	}
+	SET_MODULE_OWNER (dev);
+	SET_NETDEV_DEV(dev, &pdev->dev);
+
+#ifdef MEM_MAPPING
+	ioaddr = pci_resource_start (pdev, 1);
+	ioaddr = (long) ioremap (ioaddr, RIO_IO_SIZE);
+	if (!ioaddr) {
+		err = -ENOMEM;
+		goto err_out_dev;
+	}
+#else
+	ioaddr = pci_resource_start (pdev, 0);
+#endif
+	dev->base_addr = ioaddr;
+	dev->irq = irq;
+	np = netdev_priv(dev);
+	np->chip_id = chip_idx;
+	np->pdev = pdev;
+	spin_lock_init (&np->tx_lock);
+	spin_lock_init (&np->rx_lock);
+
+	/* Parse manual configuration */
+	np->an_enable = 1;
+	np->tx_coalesce = 1;
+	if (card_idx < MAX_UNITS) {
+		if (media[card_idx] != NULL) {
+			np->an_enable = 0;
+			if (strcmp (media[card_idx], "auto") == 0 ||
+			    strcmp (media[card_idx], "autosense") == 0 || 
+			    strcmp (media[card_idx], "0") == 0 ) {
+				np->an_enable = 2; 
+			} else if (strcmp (media[card_idx], "100mbps_fd") == 0 ||
+			    strcmp (media[card_idx], "4") == 0) {
+				np->speed = 100;
+				np->full_duplex = 1;
+			} else if (strcmp (media[card_idx], "100mbps_hd") == 0
+				   || strcmp (media[card_idx], "3") == 0) {
+				np->speed = 100;
+				np->full_duplex = 0;
+			} else if (strcmp (media[card_idx], "10mbps_fd") == 0 ||
+				   strcmp (media[card_idx], "2") == 0) {
+				np->speed = 10;
+				np->full_duplex = 1;
+			} else if (strcmp (media[card_idx], "10mbps_hd") == 0 ||
+				   strcmp (media[card_idx], "1") == 0) {
+				np->speed = 10;
+				np->full_duplex = 0;
+			} else if (strcmp (media[card_idx], "1000mbps_fd") == 0 ||
+				 strcmp (media[card_idx], "6") == 0) {
+				np->speed=1000;
+				np->full_duplex=1;
+			} else if (strcmp (media[card_idx], "1000mbps_hd") == 0 ||
+				 strcmp (media[card_idx], "5") == 0) {
+				np->speed = 1000;
+				np->full_duplex = 0;
+			} else {
+				np->an_enable = 1;
+			}
+		}
+		if (jumbo[card_idx] != 0) {
+			np->jumbo = 1;
+			dev->mtu = MAX_JUMBO;
+		} else {
+			np->jumbo = 0;
+			if (mtu[card_idx] > 0 && mtu[card_idx] < PACKET_SIZE)
+				dev->mtu = mtu[card_idx];
+		}
+		np->vlan = (vlan[card_idx] > 0 && vlan[card_idx] < 4096) ?
+		    vlan[card_idx] : 0;
+		if (rx_coalesce > 0 && rx_timeout > 0) {
+			np->rx_coalesce = rx_coalesce;
+			np->rx_timeout = rx_timeout;
+			np->coalesce = 1;
+		}
+		np->tx_flow = (tx_flow == 0) ? 0 : 1;
+		np->rx_flow = (rx_flow == 0) ? 0 : 1;
+
+		if (tx_coalesce < 1)
+			tx_coalesce = 1;
+		else if (tx_coalesce > TX_RING_SIZE-1)
+			tx_coalesce = TX_RING_SIZE - 1;
+	}
+	dev->open = &rio_open;
+	dev->hard_start_xmit = &start_xmit;
+	dev->stop = &rio_close;
+	dev->get_stats = &get_stats;
+	dev->set_multicast_list = &set_multicast;
+	dev->do_ioctl = &rio_ioctl;
+	dev->tx_timeout = &rio_tx_timeout;
+	dev->watchdog_timeo = TX_TIMEOUT;
+	dev->change_mtu = &change_mtu;
+	SET_ETHTOOL_OPS(dev, &ethtool_ops);
+#if 0
+	dev->features = NETIF_F_IP_CSUM;
+#endif
+	pci_set_drvdata (pdev, dev);
+
+	ring_space = pci_alloc_consistent (pdev, TX_TOTAL_SIZE, &ring_dma);
+	if (!ring_space)
+		goto err_out_iounmap;
+	np->tx_ring = (struct netdev_desc *) ring_space;
+	np->tx_ring_dma = ring_dma;
+
+	ring_space = pci_alloc_consistent (pdev, RX_TOTAL_SIZE, &ring_dma);
+	if (!ring_space)
+		goto err_out_unmap_tx;
+	np->rx_ring = (struct netdev_desc *) ring_space;
+	np->rx_ring_dma = ring_dma;
+
+	/* Parse eeprom data */
+	parse_eeprom (dev);
+
+	/* Find PHY address */
+	err = find_miiphy (dev);
+	if (err)
+		goto err_out_unmap_rx;
+	
+	/* Fiber device? */
+	np->phy_media = (readw(ioaddr + ASICCtrl) & PhyMedia) ? 1 : 0;
+	np->link_status = 0;
+	/* Set media and reset PHY */
+	if (np->phy_media) {
+		/* default Auto-Negotiation for fiber deivices */
+	 	if (np->an_enable == 2) {
+			np->an_enable = 1;
+		}
+		mii_set_media_pcs (dev);
+	} else {
+		/* Auto-Negotiation is mandatory for 1000BASE-T,
+		   IEEE 802.3ab Annex 28D page 14 */
+		if (np->speed == 1000)
+			np->an_enable = 1;
+		mii_set_media (dev);
+	}
+	pci_read_config_byte(pdev, PCI_REVISION_ID, &np->pci_rev_id);
+
+	err = register_netdev (dev);
+	if (err)
+		goto err_out_unmap_rx;
+
+	card_idx++;
+
+	printk (KERN_INFO "%s: %s, %02x:%02x:%02x:%02x:%02x:%02x, IRQ %d\n",
+		dev->name, np->name,
+		dev->dev_addr[0], dev->dev_addr[1], dev->dev_addr[2],
+		dev->dev_addr[3], dev->dev_addr[4], dev->dev_addr[5], irq);
+	if (tx_coalesce > 1)
+		printk(KERN_INFO "tx_coalesce:\t%d packets\n", 
+				tx_coalesce);
+	if (np->coalesce)
+		printk(KERN_INFO "rx_coalesce:\t%d packets\n"
+		       KERN_INFO "rx_timeout: \t%d ns\n", 
+				np->rx_coalesce, np->rx_timeout*640);
+	if (np->vlan)
+		printk(KERN_INFO "vlan(id):\t%d\n", np->vlan);
+	return 0;
+
+      err_out_unmap_rx:
+	pci_free_consistent (pdev, RX_TOTAL_SIZE, np->rx_ring, np->rx_ring_dma);
+      err_out_unmap_tx:
+	pci_free_consistent (pdev, TX_TOTAL_SIZE, np->tx_ring, np->tx_ring_dma);
+      err_out_iounmap:
+#ifdef MEM_MAPPING
+	iounmap ((void *) ioaddr);
+
+      err_out_dev:
+#endif
+	free_netdev (dev);
+
+      err_out_res:
+	pci_release_regions (pdev);
+
+      err_out_disable:
+	pci_disable_device (pdev);
+	return err;
+}
+
+int
+find_miiphy (struct net_device *dev)
+{
+	int i, phy_found = 0;
+	struct netdev_private *np;
+	long ioaddr;
+	np = netdev_priv(dev);
+	ioaddr = dev->base_addr;
+	np->phy_addr = 1;
+
+	for (i = 31; i >= 0; i--) {
+		int mii_status = mii_read (dev, i, 1);
+		if (mii_status != 0xffff && mii_status != 0x0000) {
+			np->phy_addr = i;
+			phy_found++;
+		}
+	}
+	if (!phy_found) {
+		printk (KERN_ERR "%s: No MII PHY found!\n", dev->name);
+		return -ENODEV;
+	}
+	return 0;
+}
+
+int
+parse_eeprom (struct net_device *dev)
+{
+	int i, j;
+	long ioaddr = dev->base_addr;
+	u8 sromdata[256];
+	u8 *psib;
+	u32 crc;
+	PSROM_t psrom = (PSROM_t) sromdata;
+	struct netdev_private *np = netdev_priv(dev);
+
+	int cid, next;
+
+#ifdef	MEM_MAPPING
+	ioaddr = pci_resource_start (np->pdev, 0);
+#endif
+	/* Read eeprom */
+	for (i = 0; i < 128; i++) {
+		((u16 *) sromdata)[i] = le16_to_cpu (read_eeprom (ioaddr, i));
+	}
+#ifdef	MEM_MAPPING
+	ioaddr = dev->base_addr;
+#endif	
+	/* Check CRC */
+	crc = ~ether_crc_le (256 - 4, sromdata);
+	if (psrom->crc != crc) {
+		printk (KERN_ERR "%s: EEPROM data CRC error.\n", dev->name);
+		return -1;
+	}
+
+	/* Set MAC address */
+	for (i = 0; i < 6; i++)
+		dev->dev_addr[i] = psrom->mac_addr[i];
+
+	/* Parse Software Infomation Block */
+	i = 0x30;
+	psib = (u8 *) sromdata;
+	do {
+		cid = psib[i++];
+		next = psib[i++];
+		if ((cid == 0 && next == 0) || (cid == 0xff && next == 0xff)) {
+			printk (KERN_ERR "Cell data error\n");
+			return -1;
+		}
+		switch (cid) {
+		case 0:	/* Format version */
+			break;
+		case 1:	/* End of cell */
+			return 0;
+		case 2:	/* Duplex Polarity */
+			np->duplex_polarity = psib[i];
+			writeb (readb (ioaddr + PhyCtrl) | psib[i],
+				ioaddr + PhyCtrl);
+			break;
+		case 3:	/* Wake Polarity */
+			np->wake_polarity = psib[i];
+			break;
+		case 9:	/* Adapter description */
+			j = (next - i > 255) ? 255 : next - i;
+			memcpy (np->name, &(psib[i]), j);
+			break;
+		case 4:
+		case 5:
+		case 6:
+		case 7:
+		case 8:	/* Reversed */
+			break;
+		default:	/* Unknown cell */
+			return -1;
+		}
+		i = next;
+	} while (1);
+
+	return 0;
+}
+
+static int
+rio_open (struct net_device *dev)
+{
+	struct netdev_private *np = netdev_priv(dev);
+	long ioaddr = dev->base_addr;
+	int i;
+	u16 macctrl;
+	
+	i = request_irq (dev->irq, &rio_interrupt, SA_SHIRQ, dev->name, dev);
+	if (i)
+		return i;
+	
+	/* Reset all logic functions */
+	writew (GlobalReset | DMAReset | FIFOReset | NetworkReset | HostReset,
+		ioaddr + ASICCtrl + 2);
+	mdelay(10);
+	
+	/* DebugCtrl bit 4, 5, 9 must set */
+	writel (readl (ioaddr + DebugCtrl) | 0x0230, ioaddr + DebugCtrl);
+
+	/* Jumbo frame */
+	if (np->jumbo != 0)
+		writew (MAX_JUMBO+14, ioaddr + MaxFrameSize);
+
+	alloc_list (dev);
+
+	/* Get station address */
+	for (i = 0; i < 6; i++)
+		writeb (dev->dev_addr[i], ioaddr + StationAddr0 + i);
+
+	set_multicast (dev);
+	if (np->coalesce) {
+		writel (np->rx_coalesce | np->rx_timeout << 16,
+			ioaddr + RxDMAIntCtrl);
+	}
+	/* Set RIO to poll every N*320nsec. */
+	writeb (0x20, ioaddr + RxDMAPollPeriod);
+	writeb (0xff, ioaddr + TxDMAPollPeriod);
+	writeb (0x30, ioaddr + RxDMABurstThresh);
+	writeb (0x30, ioaddr + RxDMAUrgentThresh);
+	writel (0x0007ffff, ioaddr + RmonStatMask);
+	/* clear statistics */
+	clear_stats (dev);
+
+	/* VLAN supported */
+	if (np->vlan) {
+		/* priority field in RxDMAIntCtrl  */
+		writel (readl(ioaddr + RxDMAIntCtrl) | 0x7 << 10, 
+			ioaddr + RxDMAIntCtrl);
+		/* VLANId */
+		writew (np->vlan, ioaddr + VLANId);
+		/* Length/Type should be 0x8100 */
+		writel (0x8100 << 16 | np->vlan, ioaddr + VLANTag);
+		/* Enable AutoVLANuntagging, but disable AutoVLANtagging.
+		   VLAN information tagged by TFC' VID, CFI fields. */
+		writel (readl (ioaddr + MACCtrl) | AutoVLANuntagging,
+			ioaddr + MACCtrl);
+	}
+
+	init_timer (&np->timer);
+	np->timer.expires = jiffies + 1*HZ;
+	np->timer.data = (unsigned long) dev;
+	np->timer.function = &rio_timer;
+	add_timer (&np->timer);
+
+	/* Start Tx/Rx */
+	writel (readl (ioaddr + MACCtrl) | StatsEnable | RxEnable | TxEnable, 
+			ioaddr + MACCtrl);
+	
+	macctrl = 0;
+	macctrl |= (np->vlan) ? AutoVLANuntagging : 0;
+	macctrl |= (np->full_duplex) ? DuplexSelect : 0;
+	macctrl |= (np->tx_flow) ? TxFlowControlEnable : 0;
+	macctrl |= (np->rx_flow) ? RxFlowControlEnable : 0;
+	writew(macctrl,	ioaddr + MACCtrl);
+
+	netif_start_queue (dev);
+	
+	/* Enable default interrupts */
+	EnableInt ();
+	return 0;
+}
+
+static void 
+rio_timer (unsigned long data)
+{
+	struct net_device *dev = (struct net_device *)data;
+	struct netdev_private *np = netdev_priv(dev);
+	unsigned int entry;
+	int next_tick = 1*HZ;
+	unsigned long flags;
+
+	spin_lock_irqsave(&np->rx_lock, flags);
+	/* Recover rx ring exhausted error */
+	if (np->cur_rx - np->old_rx >= RX_RING_SIZE) {
+		printk(KERN_INFO "Try to recover rx ring exhausted...\n");
+		/* Re-allocate skbuffs to fill the descriptor ring */
+		for (; np->cur_rx - np->old_rx > 0; np->old_rx++) {
+			struct sk_buff *skb;
+			entry = np->old_rx % RX_RING_SIZE;
+			/* Dropped packets don't need to re-allocate */
+			if (np->rx_skbuff[entry] == NULL) {
+				skb = dev_alloc_skb (np->rx_buf_sz);
+				if (skb == NULL) {
+					np->rx_ring[entry].fraginfo = 0;
+					printk (KERN_INFO
+						"%s: Still unable to re-allocate Rx skbuff.#%d\n",
+						dev->name, entry);
+					break;
+				}
+				np->rx_skbuff[entry] = skb;
+				skb->dev = dev;
+				/* 16 byte align the IP header */
+				skb_reserve (skb, 2);
+				np->rx_ring[entry].fraginfo =
+				    cpu_to_le64 (pci_map_single
+					 (np->pdev, skb->tail, np->rx_buf_sz,
+					  PCI_DMA_FROMDEVICE));
+			}
+			np->rx_ring[entry].fraginfo |=
+			    cpu_to_le64 (np->rx_buf_sz) << 48;
+			np->rx_ring[entry].status = 0;
+		} /* end for */
+	} /* end if */
+	spin_unlock_irqrestore (&np->rx_lock, flags);
+	np->timer.expires = jiffies + next_tick;
+	add_timer(&np->timer);
+}
+	
+static void
+rio_tx_timeout (struct net_device *dev)
+{
+	long ioaddr = dev->base_addr;
+
+	printk (KERN_INFO "%s: Tx timed out (%4.4x), is buffer full?\n",
+		dev->name, readl (ioaddr + TxStatus));
+	rio_free_tx(dev, 0);
+	dev->if_port = 0;
+	dev->trans_start = jiffies;
+}
+
+ /* allocate and initialize Tx and Rx descriptors */
+static void
+alloc_list (struct net_device *dev)
+{
+	struct netdev_private *np = netdev_priv(dev);
+	int i;
+
+	np->cur_rx = np->cur_tx = 0;
+	np->old_rx = np->old_tx = 0;
+	np->rx_buf_sz = (dev->mtu <= 1500 ? PACKET_SIZE : dev->mtu + 32);
+
+	/* Initialize Tx descriptors, TFDListPtr leaves in start_xmit(). */
+	for (i = 0; i < TX_RING_SIZE; i++) {
+		np->tx_skbuff[i] = NULL;
+		np->tx_ring[i].status = cpu_to_le64 (TFDDone);
+		np->tx_ring[i].next_desc = cpu_to_le64 (np->tx_ring_dma +
+					      ((i+1)%TX_RING_SIZE) *
+					      sizeof (struct netdev_desc));
+	}
+
+	/* Initialize Rx descriptors */
+	for (i = 0; i < RX_RING_SIZE; i++) {
+		np->rx_ring[i].next_desc = cpu_to_le64 (np->rx_ring_dma +
+						((i + 1) % RX_RING_SIZE) *
+						sizeof (struct netdev_desc));
+		np->rx_ring[i].status = 0;
+		np->rx_ring[i].fraginfo = 0;
+		np->rx_skbuff[i] = NULL;
+	}
+
+	/* Allocate the rx buffers */
+	for (i = 0; i < RX_RING_SIZE; i++) {
+		/* Allocated fixed size of skbuff */
+		struct sk_buff *skb = dev_alloc_skb (np->rx_buf_sz);
+		np->rx_skbuff[i] = skb;
+		if (skb == NULL) {
+			printk (KERN_ERR
+				"%s: alloc_list: allocate Rx buffer error! ",
+				dev->name);
+			break;
+		}
+		skb->dev = dev;	/* Mark as being used by this device. */
+		skb_reserve (skb, 2);	/* 16 byte align the IP header. */
+		/* Rubicon now supports 40 bits of addressing space. */
+		np->rx_ring[i].fraginfo =
+		    cpu_to_le64 ( pci_map_single (
+			 	  np->pdev, skb->tail, np->rx_buf_sz,
+				  PCI_DMA_FROMDEVICE));
+		np->rx_ring[i].fraginfo |= cpu_to_le64 (np->rx_buf_sz) << 48;
+	}
+
+	/* Set RFDListPtr */
+	writel (cpu_to_le32 (np->rx_ring_dma), dev->base_addr + RFDListPtr0);
+	writel (0, dev->base_addr + RFDListPtr1);
+
+	return;
+}
+
+static int
+start_xmit (struct sk_buff *skb, struct net_device *dev)
+{
+	struct netdev_private *np = netdev_priv(dev);
+	struct netdev_desc *txdesc;
+	unsigned entry;
+	u32 ioaddr;
+	u64 tfc_vlan_tag = 0;
+
+	if (np->link_status == 0) {	/* Link Down */
+		dev_kfree_skb(skb);
+		return 0;
+	}
+	ioaddr = dev->base_addr;
+	entry = np->cur_tx % TX_RING_SIZE;
+	np->tx_skbuff[entry] = skb;
+	txdesc = &np->tx_ring[entry];
+
+#if 0
+	if (skb->ip_summed == CHECKSUM_HW) {
+		txdesc->status |=
+		    cpu_to_le64 (TCPChecksumEnable | UDPChecksumEnable |
+				 IPChecksumEnable);
+	}
+#endif
+	if (np->vlan) {
+		tfc_vlan_tag =
+		    cpu_to_le64 (VLANTagInsert) |
+		    (cpu_to_le64 (np->vlan) << 32) |
+		    (cpu_to_le64 (skb->priority) << 45);
+	}
+	txdesc->fraginfo = cpu_to_le64 (pci_map_single (np->pdev, skb->data,
+							skb->len,
+							PCI_DMA_TODEVICE));
+	txdesc->fraginfo |= cpu_to_le64 (skb->len) << 48;
+
+	/* DL2K bug: DMA fails to get next descriptor ptr in 10Mbps mode
+	 * Work around: Always use 1 descriptor in 10Mbps mode */
+	if (entry % np->tx_coalesce == 0 || np->speed == 10)
+		txdesc->status = cpu_to_le64 (entry | tfc_vlan_tag |
+					      WordAlignDisable | 
+					      TxDMAIndicate |
+					      (1 << FragCountShift));
+	else
+		txdesc->status = cpu_to_le64 (entry | tfc_vlan_tag |
+					      WordAlignDisable | 
+					      (1 << FragCountShift));
+
+	/* TxDMAPollNow */
+	writel (readl (ioaddr + DMACtrl) | 0x00001000, ioaddr + DMACtrl);
+	/* Schedule ISR */
+	writel(10000, ioaddr + CountDown);
+	np->cur_tx = (np->cur_tx + 1) % TX_RING_SIZE;
+	if ((np->cur_tx - np->old_tx + TX_RING_SIZE) % TX_RING_SIZE
+			< TX_QUEUE_LEN - 1 && np->speed != 10) {
+		/* do nothing */
+	} else if (!netif_queue_stopped(dev)) {
+		netif_stop_queue (dev);
+	}
+
+	/* The first TFDListPtr */
+	if (readl (dev->base_addr + TFDListPtr0) == 0) {
+		writel (np->tx_ring_dma + entry * sizeof (struct netdev_desc),
+			dev->base_addr + TFDListPtr0);
+		writel (0, dev->base_addr + TFDListPtr1);
+	}
+	
+	/* NETDEV WATCHDOG timer */
+	dev->trans_start = jiffies;
+	return 0;
+}
+
+static irqreturn_t
+rio_interrupt (int irq, void *dev_instance, struct pt_regs *rgs)
+{
+	struct net_device *dev = dev_instance;
+	struct netdev_private *np;
+	unsigned int_status;
+	long ioaddr;
+	int cnt = max_intrloop;
+	int handled = 0;
+
+	ioaddr = dev->base_addr;
+	np = netdev_priv(dev);
+	while (1) {
+		int_status = readw (ioaddr + IntStatus); 
+		writew (int_status, ioaddr + IntStatus);
+		int_status &= DEFAULT_INTR;
+		if (int_status == 0 || --cnt < 0)
+			break;
+		handled = 1;
+		/* Processing received packets */
+		if (int_status & RxDMAComplete)
+			receive_packet (dev);
+		/* TxDMAComplete interrupt */
+		if ((int_status & (TxDMAComplete|IntRequested))) {
+			int tx_status;
+			tx_status = readl (ioaddr + TxStatus);
+			if (tx_status & 0x01)
+				tx_error (dev, tx_status);
+			/* Free used tx skbuffs */
+			rio_free_tx (dev, 1);		
+		}
+
+		/* Handle uncommon events */
+		if (int_status &
+		    (HostError | LinkEvent | UpdateStats))
+			rio_error (dev, int_status);
+	}
+	if (np->cur_tx != np->old_tx)
+		writel (100, ioaddr + CountDown);
+	return IRQ_RETVAL(handled);
+}
+
+static void 
+rio_free_tx (struct net_device *dev, int irq) 
+{
+	struct netdev_private *np = netdev_priv(dev);
+	int entry = np->old_tx % TX_RING_SIZE;
+	int tx_use = 0;
+	unsigned long flag = 0;
+	
+	if (irq)
+		spin_lock(&np->tx_lock);
+	else
+		spin_lock_irqsave(&np->tx_lock, flag);
+			
+	/* Free used tx skbuffs */
+	while (entry != np->cur_tx) {
+		struct sk_buff *skb;
+
+		if (!(np->tx_ring[entry].status & TFDDone))
+			break;
+		skb = np->tx_skbuff[entry];
+		pci_unmap_single (np->pdev,
+				  np->tx_ring[entry].fraginfo,
+				  skb->len, PCI_DMA_TODEVICE);
+		if (irq)
+			dev_kfree_skb_irq (skb);
+		else
+			dev_kfree_skb (skb);
+
+		np->tx_skbuff[entry] = NULL;
+		entry = (entry + 1) % TX_RING_SIZE;
+		tx_use++;
+	}
+	if (irq)
+		spin_unlock(&np->tx_lock);
+	else
+		spin_unlock_irqrestore(&np->tx_lock, flag);
+	np->old_tx = entry;
+
+	/* If the ring is no longer full, clear tx_full and 
+	   call netif_wake_queue() */
+
+	if (netif_queue_stopped(dev) &&
+	    ((np->cur_tx - np->old_tx + TX_RING_SIZE) % TX_RING_SIZE 
+	    < TX_QUEUE_LEN - 1 || np->speed == 10)) {
+		netif_wake_queue (dev);
+	}
+}
+
+static void
+tx_error (struct net_device *dev, int tx_status)
+{
+	struct netdev_private *np;
+	long ioaddr = dev->base_addr;
+	int frame_id;
+	int i;
+
+	np = netdev_priv(dev);
+
+	frame_id = (tx_status & 0xffff0000);
+	printk (KERN_ERR "%s: Transmit error, TxStatus %4.4x, FrameId %d.\n",
+		dev->name, tx_status, frame_id);
+	np->stats.tx_errors++;
+	/* Ttransmit Underrun */
+	if (tx_status & 0x10) {
+		np->stats.tx_fifo_errors++;
+		writew (readw (ioaddr + TxStartThresh) + 0x10,
+			ioaddr + TxStartThresh);
+		/* Transmit Underrun need to set TxReset, DMARest, FIFOReset */
+		writew (TxReset | DMAReset | FIFOReset | NetworkReset,
+			ioaddr + ASICCtrl + 2);
+		/* Wait for ResetBusy bit clear */
+		for (i = 50; i > 0; i--) {
+			if ((readw (ioaddr + ASICCtrl + 2) & ResetBusy) == 0)
+				break;
+			mdelay (1);
+		}
+		rio_free_tx (dev, 1);
+		/* Reset TFDListPtr */
+		writel (np->tx_ring_dma +
+			np->old_tx * sizeof (struct netdev_desc),
+			dev->base_addr + TFDListPtr0);
+		writel (0, dev->base_addr + TFDListPtr1);
+
+		/* Let TxStartThresh stay default value */
+	}
+	/* Late Collision */
+	if (tx_status & 0x04) {
+		np->stats.tx_fifo_errors++;
+		/* TxReset and clear FIFO */
+		writew (TxReset | FIFOReset, ioaddr + ASICCtrl + 2);
+		/* Wait reset done */
+		for (i = 50; i > 0; i--) {
+			if ((readw (ioaddr + ASICCtrl + 2) & ResetBusy) == 0)
+				break;
+			mdelay (1);
+		}
+		/* Let TxStartThresh stay default value */
+	}
+	/* Maximum Collisions */
+#ifdef ETHER_STATS	
+	if (tx_status & 0x08) 
+		np->stats.collisions16++;
+#else
+	if (tx_status & 0x08) 
+		np->stats.collisions++;
+#endif
+	/* Restart the Tx */
+	writel (readw (dev->base_addr + MACCtrl) | TxEnable, ioaddr + MACCtrl);
+}
+
+static int
+receive_packet (struct net_device *dev)
+{
+	struct netdev_private *np = netdev_priv(dev);
+	int entry = np->cur_rx % RX_RING_SIZE;
+	int cnt = 30;
+
+	/* If RFDDone, FrameStart and FrameEnd set, there is a new packet in. */
+	while (1) {
+		struct netdev_desc *desc = &np->rx_ring[entry];
+		int pkt_len;
+		u64 frame_status;
+
+		if (!(desc->status & RFDDone) ||
+		    !(desc->status & FrameStart) || !(desc->status & FrameEnd))
+			break;
+
+		/* Chip omits the CRC. */
+		pkt_len = le64_to_cpu (desc->status & 0xffff);
+		frame_status = le64_to_cpu (desc->status);
+		if (--cnt < 0)
+			break;
+		/* Update rx error statistics, drop packet. */
+		if (frame_status & RFS_Errors) {
+			np->stats.rx_errors++;
+			if (frame_status & (RxRuntFrame | RxLengthError))
+				np->stats.rx_length_errors++;
+			if (frame_status & RxFCSError)
+				np->stats.rx_crc_errors++;
+			if (frame_status & RxAlignmentError && np->speed != 1000)
+				np->stats.rx_frame_errors++;
+			if (frame_status & RxFIFOOverrun)
+	 			np->stats.rx_fifo_errors++;
+		} else {
+			struct sk_buff *skb;
+
+			/* Small skbuffs for short packets */
+			if (pkt_len > copy_thresh) {
+				pci_unmap_single (np->pdev, desc->fraginfo,
+						  np->rx_buf_sz,
+						  PCI_DMA_FROMDEVICE);
+				skb_put (skb = np->rx_skbuff[entry], pkt_len);
+				np->rx_skbuff[entry] = NULL;
+			} else if ((skb = dev_alloc_skb (pkt_len + 2)) != NULL) {
+				pci_dma_sync_single_for_cpu(np->pdev,
+							    desc->fraginfo,
+							    np->rx_buf_sz,
+							    PCI_DMA_FROMDEVICE);
+				skb->dev = dev;
+				/* 16 byte align the IP header */
+				skb_reserve (skb, 2);
+				eth_copy_and_sum (skb,
+						  np->rx_skbuff[entry]->tail,
+						  pkt_len, 0);
+				skb_put (skb, pkt_len);
+				pci_dma_sync_single_for_device(np->pdev,
+							       desc->fraginfo,
+							       np->rx_buf_sz,
+							       PCI_DMA_FROMDEVICE);
+			}
+			skb->protocol = eth_type_trans (skb, dev);
+#if 0			
+			/* Checksum done by hw, but csum value unavailable. */
+			if (np->pci_rev_id >= 0x0c && 
+				!(frame_status & (TCPError | UDPError | IPError))) {
+				skb->ip_summed = CHECKSUM_UNNECESSARY;
+			} 
+#endif
+			netif_rx (skb);
+			dev->last_rx = jiffies;
+		}
+		entry = (entry + 1) % RX_RING_SIZE;
+	}
+	spin_lock(&np->rx_lock);
+	np->cur_rx = entry;
+	/* Re-allocate skbuffs to fill the descriptor ring */
+	entry = np->old_rx;
+	while (entry != np->cur_rx) {
+		struct sk_buff *skb;
+		/* Dropped packets don't need to re-allocate */
+		if (np->rx_skbuff[entry] == NULL) {
+			skb = dev_alloc_skb (np->rx_buf_sz);
+			if (skb == NULL) {
+				np->rx_ring[entry].fraginfo = 0;
+				printk (KERN_INFO
+					"%s: receive_packet: "
+					"Unable to re-allocate Rx skbuff.#%d\n",
+					dev->name, entry);
+				break;
+			}
+			np->rx_skbuff[entry] = skb;
+			skb->dev = dev;
+			/* 16 byte align the IP header */
+			skb_reserve (skb, 2);
+			np->rx_ring[entry].fraginfo =
+			    cpu_to_le64 (pci_map_single
+					 (np->pdev, skb->tail, np->rx_buf_sz,
+					  PCI_DMA_FROMDEVICE));
+		}
+		np->rx_ring[entry].fraginfo |=
+		    cpu_to_le64 (np->rx_buf_sz) << 48;
+		np->rx_ring[entry].status = 0;
+		entry = (entry + 1) % RX_RING_SIZE;
+	}
+	np->old_rx = entry;
+	spin_unlock(&np->rx_lock);
+	return 0;
+}
+
+static void
+rio_error (struct net_device *dev, int int_status)
+{
+	long ioaddr = dev->base_addr;
+	struct netdev_private *np = netdev_priv(dev);
+	u16 macctrl;
+
+	/* Link change event */
+	if (int_status & LinkEvent) {
+		if (mii_wait_link (dev, 10) == 0) {
+			printk (KERN_INFO "%s: Link up\n", dev->name);
+			if (np->phy_media)
+				mii_get_media_pcs (dev);
+			else
+				mii_get_media (dev);
+			if (np->speed == 1000)
+				np->tx_coalesce = tx_coalesce;
+			else 
+				np->tx_coalesce = 1;
+			macctrl = 0;
+			macctrl |= (np->vlan) ? AutoVLANuntagging : 0;
+			macctrl |= (np->full_duplex) ? DuplexSelect : 0;
+			macctrl |= (np->tx_flow) ? 
+				TxFlowControlEnable : 0;
+			macctrl |= (np->rx_flow) ? 
+				RxFlowControlEnable : 0;
+			writew(macctrl,	ioaddr + MACCtrl);
+			np->link_status = 1;
+			netif_carrier_on(dev);
+		} else {
+			printk (KERN_INFO "%s: Link off\n", dev->name);
+			np->link_status = 0;
+			netif_carrier_off(dev);
+		}
+	}
+
+	/* UpdateStats statistics registers */
+	if (int_status & UpdateStats) {
+		get_stats (dev);
+	}
+
+	/* PCI Error, a catastronphic error related to the bus interface 
+	   occurs, set GlobalReset and HostReset to reset. */
+	if (int_status & HostError) {
+		printk (KERN_ERR "%s: HostError! IntStatus %4.4x.\n",
+			dev->name, int_status);
+		writew (GlobalReset | HostReset, ioaddr + ASICCtrl + 2);
+		mdelay (500);
+	}
+}
+
+static struct net_device_stats *
+get_stats (struct net_device *dev)
+{
+	long ioaddr = dev->base_addr;
+	struct netdev_private *np = netdev_priv(dev);
+#ifdef MEM_MAPPING
+	int i;
+#endif
+	unsigned int stat_reg;
+
+	/* All statistics registers need to be acknowledged,
+	   else statistic overflow could cause problems */
+	
+	np->stats.rx_packets += readl (ioaddr + FramesRcvOk);
+	np->stats.tx_packets += readl (ioaddr + FramesXmtOk);
+	np->stats.rx_bytes += readl (ioaddr + OctetRcvOk);
+	np->stats.tx_bytes += readl (ioaddr + OctetXmtOk);
+
+	np->stats.multicast = readl (ioaddr + McstFramesRcvdOk);
+	np->stats.collisions += readl (ioaddr + SingleColFrames) 
+			     +  readl (ioaddr + MultiColFrames); 
+	
+	/* detailed tx errors */
+	stat_reg = readw (ioaddr + FramesAbortXSColls);
+	np->stats.tx_aborted_errors += stat_reg;
+	np->stats.tx_errors += stat_reg;
+
+	stat_reg = readw (ioaddr + CarrierSenseErrors);
+	np->stats.tx_carrier_errors += stat_reg;
+	np->stats.tx_errors += stat_reg;
+
+	/* Clear all other statistic register. */
+	readl (ioaddr + McstOctetXmtOk);
+	readw (ioaddr + BcstFramesXmtdOk);
+	readl (ioaddr + McstFramesXmtdOk);
+	readw (ioaddr + BcstFramesRcvdOk);
+	readw (ioaddr + MacControlFramesRcvd);
+	readw (ioaddr + FrameTooLongErrors);
+	readw (ioaddr + InRangeLengthErrors);
+	readw (ioaddr + FramesCheckSeqErrors);
+	readw (ioaddr + FramesLostRxErrors);
+	readl (ioaddr + McstOctetXmtOk);
+	readl (ioaddr + BcstOctetXmtOk);
+	readl (ioaddr + McstFramesXmtdOk);
+	readl (ioaddr + FramesWDeferredXmt);
+	readl (ioaddr + LateCollisions);
+	readw (ioaddr + BcstFramesXmtdOk);
+	readw (ioaddr + MacControlFramesXmtd);
+	readw (ioaddr + FramesWEXDeferal);
+
+#ifdef MEM_MAPPING
+	for (i = 0x100; i <= 0x150; i += 4)
+		readl (ioaddr + i);
+#endif
+	readw (ioaddr + TxJumboFrames);
+	readw (ioaddr + RxJumboFrames);
+	readw (ioaddr + TCPCheckSumErrors);
+	readw (ioaddr + UDPCheckSumErrors);
+	readw (ioaddr + IPCheckSumErrors);
+	return &np->stats;
+}
+
+static int
+clear_stats (struct net_device *dev)
+{
+	long ioaddr = dev->base_addr;
+#ifdef MEM_MAPPING
+	int i;
+#endif 
+
+	/* All statistics registers need to be acknowledged,
+	   else statistic overflow could cause problems */
+	readl (ioaddr + FramesRcvOk);
+	readl (ioaddr + FramesXmtOk);
+	readl (ioaddr + OctetRcvOk);
+	readl (ioaddr + OctetXmtOk);
+
+	readl (ioaddr + McstFramesRcvdOk);
+	readl (ioaddr + SingleColFrames);
+	readl (ioaddr + MultiColFrames);
+	readl (ioaddr + LateCollisions);
+	/* detailed rx errors */		
+	readw (ioaddr + FrameTooLongErrors);
+	readw (ioaddr + InRangeLengthErrors);
+	readw (ioaddr + FramesCheckSeqErrors);
+	readw (ioaddr + FramesLostRxErrors);
+
+	/* detailed tx errors */
+	readw (ioaddr + FramesAbortXSColls);
+	readw (ioaddr + CarrierSenseErrors);
+
+	/* Clear all other statistic register. */
+	readl (ioaddr + McstOctetXmtOk);
+	readw (ioaddr + BcstFramesXmtdOk);
+	readl (ioaddr + McstFramesXmtdOk);
+	readw (ioaddr + BcstFramesRcvdOk);
+	readw (ioaddr + MacControlFramesRcvd);
+	readl (ioaddr + McstOctetXmtOk);
+	readl (ioaddr + BcstOctetXmtOk);
+	readl (ioaddr + McstFramesXmtdOk);
+	readl (ioaddr + FramesWDeferredXmt);
+	readw (ioaddr + BcstFramesXmtdOk);
+	readw (ioaddr + MacControlFramesXmtd);
+	readw (ioaddr + FramesWEXDeferal);
+#ifdef MEM_MAPPING
+	for (i = 0x100; i <= 0x150; i += 4)
+		readl (ioaddr + i);
+#endif 
+	readw (ioaddr + TxJumboFrames);
+	readw (ioaddr + RxJumboFrames);
+	readw (ioaddr + TCPCheckSumErrors);
+	readw (ioaddr + UDPCheckSumErrors);
+	readw (ioaddr + IPCheckSumErrors);
+	return 0;
+}
+
+
+int
+change_mtu (struct net_device *dev, int new_mtu)
+{
+	struct netdev_private *np = netdev_priv(dev);
+	int max = (np->jumbo) ? MAX_JUMBO : 1536;
+
+	if ((new_mtu < 68) || (new_mtu > max)) {
+		return -EINVAL;
+	}
+
+	dev->mtu = new_mtu;
+
+	return 0;
+}
+
+static void
+set_multicast (struct net_device *dev)
+{
+	long ioaddr = dev->base_addr;
+	u32 hash_table[2];
+	u16 rx_mode = 0;
+	struct netdev_private *np = netdev_priv(dev);
+	
+	hash_table[0] = hash_table[1] = 0;
+	/* RxFlowcontrol DA: 01-80-C2-00-00-01. Hash index=0x39 */
+	hash_table[1] |= cpu_to_le32(0x02000000);
+	if (dev->flags & IFF_PROMISC) {
+		/* Receive all frames promiscuously. */
+		rx_mode = ReceiveAllFrames;
+	} else if ((dev->flags & IFF_ALLMULTI) || 
+			(dev->mc_count > multicast_filter_limit)) {
+		/* Receive broadcast and multicast frames */
+		rx_mode = ReceiveBroadcast | ReceiveMulticast | ReceiveUnicast;
+	} else if (dev->mc_count > 0) {
+		int i;
+		struct dev_mc_list *mclist;
+		/* Receive broadcast frames and multicast frames filtering 
+		   by Hashtable */
+		rx_mode =
+		    ReceiveBroadcast | ReceiveMulticastHash | ReceiveUnicast;
+		for (i=0, mclist = dev->mc_list; mclist && i < dev->mc_count; 
+				i++, mclist=mclist->next) 
+		{
+			int bit, index = 0;
+			int crc = ether_crc_le (ETH_ALEN, mclist->dmi_addr);
+			/* The inverted high significant 6 bits of CRC are
+			   used as an index to hashtable */
+			for (bit = 0; bit < 6; bit++)
+				if (crc & (1 << (31 - bit)))
+					index |= (1 << bit);
+			hash_table[index / 32] |= (1 << (index % 32));
+		}
+	} else {
+		rx_mode = ReceiveBroadcast | ReceiveUnicast;
+	}
+	if (np->vlan) {
+		/* ReceiveVLANMatch field in ReceiveMode */
+		rx_mode |= ReceiveVLANMatch;
+	}
+
+	writel (hash_table[0], ioaddr + HashTable0);
+	writel (hash_table[1], ioaddr + HashTable1);
+	writew (rx_mode, ioaddr + ReceiveMode);
+}
+
+static void rio_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
+{
+	struct netdev_private *np = netdev_priv(dev);
+	strcpy(info->driver, "dl2k");
+	strcpy(info->version, DRV_VERSION);
+	strcpy(info->bus_info, pci_name(np->pdev));
+}	
+
+static int rio_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
+{
+	struct netdev_private *np = netdev_priv(dev);
+	if (np->phy_media) {
+		/* fiber device */
+		cmd->supported = SUPPORTED_Autoneg | SUPPORTED_FIBRE;
+		cmd->advertising= ADVERTISED_Autoneg | ADVERTISED_FIBRE;
+		cmd->port = PORT_FIBRE;
+		cmd->transceiver = XCVR_INTERNAL;	
+	} else {
+		/* copper device */
+		cmd->supported = SUPPORTED_10baseT_Half | 
+			SUPPORTED_10baseT_Full | SUPPORTED_100baseT_Half
+			| SUPPORTED_100baseT_Full | SUPPORTED_1000baseT_Full |
+			SUPPORTED_Autoneg | SUPPORTED_MII;
+		cmd->advertising = ADVERTISED_10baseT_Half |
+			ADVERTISED_10baseT_Full | ADVERTISED_100baseT_Half |
+			ADVERTISED_100baseT_Full | ADVERTISED_1000baseT_Full|
+			ADVERTISED_Autoneg | ADVERTISED_MII;
+		cmd->port = PORT_MII;
+		cmd->transceiver = XCVR_INTERNAL;
+	}
+	if ( np->link_status ) { 
+		cmd->speed = np->speed;
+		cmd->duplex = np->full_duplex ? DUPLEX_FULL : DUPLEX_HALF;
+	} else {
+		cmd->speed = -1;
+		cmd->duplex = -1;
+	}
+	if ( np->an_enable)
+		cmd->autoneg = AUTONEG_ENABLE;
+	else
+		cmd->autoneg = AUTONEG_DISABLE;
+	
+	cmd->phy_address = np->phy_addr;
+	return 0;				   
+}
+
+static int rio_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
+{
+	struct netdev_private *np = netdev_priv(dev);
+	netif_carrier_off(dev);
+	if (cmd->autoneg == AUTONEG_ENABLE) {
+		if (np->an_enable)
+			return 0;
+		else {
+			np->an_enable = 1;
+			mii_set_media(dev);
+			return 0;	
+		}	
+	} else {
+		np->an_enable = 0;
+		if (np->speed == 1000) {
+			cmd->speed = SPEED_100;			
+			cmd->duplex = DUPLEX_FULL;
+			printk("Warning!! Can't disable Auto negotiation in 1000Mbps, change to Manual 100Mbps, Full duplex.\n");
+		}
+		switch(cmd->speed + cmd->duplex) {
+		
+		case SPEED_10 + DUPLEX_HALF:
+			np->speed = 10;
+			np->full_duplex = 0;
+			break;
+		
+		case SPEED_10 + DUPLEX_FULL:
+			np->speed = 10;
+			np->full_duplex = 1;
+			break;
+		case SPEED_100 + DUPLEX_HALF:
+			np->speed = 100;
+			np->full_duplex = 0;
+			break;
+		case SPEED_100 + DUPLEX_FULL:
+			np->speed = 100;
+			np->full_duplex = 1;
+			break;
+		case SPEED_1000 + DUPLEX_HALF:/* not supported */
+		case SPEED_1000 + DUPLEX_FULL:/* not supported */
+		default:
+			return -EINVAL;	
+		}
+		mii_set_media(dev);
+	}
+	return 0;
+}
+
+static u32 rio_get_link(struct net_device *dev)
+{
+	struct netdev_private *np = netdev_priv(dev);
+	return np->link_status;
+}
+
+static struct ethtool_ops ethtool_ops = {
+	.get_drvinfo = rio_get_drvinfo,
+	.get_settings = rio_get_settings,
+	.set_settings = rio_set_settings,
+	.get_link = rio_get_link,
+};
+
+static int
+rio_ioctl (struct net_device *dev, struct ifreq *rq, int cmd)
+{
+	int phy_addr;
+	struct netdev_private *np = netdev_priv(dev);
+	struct mii_data *miidata = (struct mii_data *) &rq->ifr_ifru;
+	
+	struct netdev_desc *desc;
+	int i;
+
+	phy_addr = np->phy_addr;
+	switch (cmd) {
+	case SIOCDEVPRIVATE:
+		break;
+	
+	case SIOCDEVPRIVATE + 1:
+		miidata->out_value = mii_read (dev, phy_addr, miidata->reg_num);
+		break;
+	case SIOCDEVPRIVATE + 2:
+		mii_write (dev, phy_addr, miidata->reg_num, miidata->in_value);
+		break;
+	case SIOCDEVPRIVATE + 3:
+		break;
+	case SIOCDEVPRIVATE + 4:
+		break;
+	case SIOCDEVPRIVATE + 5:
+		netif_stop_queue (dev);
+		break;
+	case SIOCDEVPRIVATE + 6:
+		netif_wake_queue (dev);
+		break;
+	case SIOCDEVPRIVATE + 7:
+		printk
+		    ("tx_full=%x cur_tx=%lx old_tx=%lx cur_rx=%lx old_rx=%lx\n",
+		     netif_queue_stopped(dev), np->cur_tx, np->old_tx, np->cur_rx,
+		     np->old_rx);
+		break;
+	case SIOCDEVPRIVATE + 8:
+		printk("TX ring:\n");
+		for (i = 0; i < TX_RING_SIZE; i++) {
+			desc = &np->tx_ring[i];
+			printk
+			    ("%02x:cur:%08x next:%08x status:%08x frag1:%08x frag0:%08x",
+			     i,
+			     (u32) (np->tx_ring_dma + i * sizeof (*desc)),
+			     (u32) desc->next_desc,
+			     (u32) desc->status, (u32) (desc->fraginfo >> 32),
+			     (u32) desc->fraginfo);
+			printk ("\n");
+		}
+		printk ("\n");
+		break;
+
+	default:
+		return -EOPNOTSUPP;
+	}
+	return 0;
+}
+
+#define EEP_READ 0x0200
+#define EEP_BUSY 0x8000
+/* Read the EEPROM word */
+/* We use I/O instruction to read/write eeprom to avoid fail on some machines */
+int
+read_eeprom (long ioaddr, int eep_addr)
+{
+	int i = 1000;
+	outw (EEP_READ | (eep_addr & 0xff), ioaddr + EepromCtrl);
+	while (i-- > 0) {
+		if (!(inw (ioaddr + EepromCtrl) & EEP_BUSY)) {
+			return inw (ioaddr + EepromData);
+		}
+	}
+	return 0;
+}
+
+enum phy_ctrl_bits {
+	MII_READ = 0x00, MII_CLK = 0x01, MII_DATA1 = 0x02, MII_WRITE = 0x04,
+	MII_DUPLEX = 0x08,
+};
+
+#define mii_delay() readb(ioaddr)
+static void
+mii_sendbit (struct net_device *dev, u32 data)
+{
+	long ioaddr = dev->base_addr + PhyCtrl;
+	data = (data) ? MII_DATA1 : 0;
+	data |= MII_WRITE;
+	data |= (readb (ioaddr) & 0xf8) | MII_WRITE;
+	writeb (data, ioaddr);
+	mii_delay ();
+	writeb (data | MII_CLK, ioaddr);
+	mii_delay ();
+}
+
+static int
+mii_getbit (struct net_device *dev)
+{
+	long ioaddr = dev->base_addr + PhyCtrl;
+	u8 data;
+
+	data = (readb (ioaddr) & 0xf8) | MII_READ;
+	writeb (data, ioaddr);
+	mii_delay ();
+	writeb (data | MII_CLK, ioaddr);
+	mii_delay ();
+	return ((readb (ioaddr) >> 1) & 1);
+}
+
+static void
+mii_send_bits (struct net_device *dev, u32 data, int len)
+{
+	int i;
+	for (i = len - 1; i >= 0; i--) {
+		mii_sendbit (dev, data & (1 << i));
+	}
+}
+
+static int
+mii_read (struct net_device *dev, int phy_addr, int reg_num)
+{
+	u32 cmd;
+	int i;
+	u32 retval = 0;
+
+	/* Preamble */
+	mii_send_bits (dev, 0xffffffff, 32);
+	/* ST(2), OP(2), ADDR(5), REG#(5), TA(2), Data(16) total 32 bits */
+	/* ST,OP = 0110'b for read operation */
+	cmd = (0x06 << 10 | phy_addr << 5 | reg_num);
+	mii_send_bits (dev, cmd, 14);
+	/* Turnaround */
+	if (mii_getbit (dev))
+		goto err_out;
+	/* Read data */
+	for (i = 0; i < 16; i++) {
+		retval |= mii_getbit (dev);
+		retval <<= 1;
+	}
+	/* End cycle */
+	mii_getbit (dev);
+	return (retval >> 1) & 0xffff;
+
+      err_out:
+	return 0;
+}
+static int
+mii_write (struct net_device *dev, int phy_addr, int reg_num, u16 data)
+{
+	u32 cmd;
+
+	/* Preamble */
+	mii_send_bits (dev, 0xffffffff, 32);
+	/* ST(2), OP(2), ADDR(5), REG#(5), TA(2), Data(16) total 32 bits */
+	/* ST,OP,AAAAA,RRRRR,TA = 0101xxxxxxxxxx10'b = 0x5002 for write */
+	cmd = (0x5002 << 16) | (phy_addr << 23) | (reg_num << 18) | data;
+	mii_send_bits (dev, cmd, 32);
+	/* End cycle */
+	mii_getbit (dev);
+	return 0;
+}
+static int
+mii_wait_link (struct net_device *dev, int wait)
+{
+	BMSR_t bmsr;
+	int phy_addr;
+	struct netdev_private *np;
+
+	np = netdev_priv(dev);
+	phy_addr = np->phy_addr;
+
+	do {
+		bmsr.image = mii_read (dev, phy_addr, MII_BMSR);
+		if (bmsr.bits.link_status)
+			return 0;
+		mdelay (1);
+	} while (--wait > 0);
+	return -1;
+}
+static int
+mii_get_media (struct net_device *dev)
+{
+	ANAR_t negotiate;
+	BMSR_t bmsr;
+	BMCR_t bmcr;
+	MSCR_t mscr;
+	MSSR_t mssr;
+	int phy_addr;
+	struct netdev_private *np;
+
+	np = netdev_priv(dev);
+	phy_addr = np->phy_addr;
+
+	bmsr.image = mii_read (dev, phy_addr, MII_BMSR);
+	if (np->an_enable) {
+		if (!bmsr.bits.an_complete) {
+			/* Auto-Negotiation not completed */
+			return -1;
+		}
+		negotiate.image = mii_read (dev, phy_addr, MII_ANAR) & 
+			mii_read (dev, phy_addr, MII_ANLPAR);
+		mscr.image = mii_read (dev, phy_addr, MII_MSCR);
+		mssr.image = mii_read (dev, phy_addr, MII_MSSR);
+		if (mscr.bits.media_1000BT_FD & mssr.bits.lp_1000BT_FD) {
+			np->speed = 1000;
+			np->full_duplex = 1;
+			printk (KERN_INFO "Auto 1000 Mbps, Full duplex\n");
+		} else if (mscr.bits.media_1000BT_HD & mssr.bits.lp_1000BT_HD) {
+			np->speed = 1000;
+			np->full_duplex = 0;
+			printk (KERN_INFO "Auto 1000 Mbps, Half duplex\n");
+		} else if (negotiate.bits.media_100BX_FD) {
+			np->speed = 100;
+			np->full_duplex = 1;
+			printk (KERN_INFO "Auto 100 Mbps, Full duplex\n");
+		} else if (negotiate.bits.media_100BX_HD) {
+			np->speed = 100;
+			np->full_duplex = 0;
+			printk (KERN_INFO "Auto 100 Mbps, Half duplex\n");
+		} else if (negotiate.bits.media_10BT_FD) {
+			np->speed = 10;
+			np->full_duplex = 1;
+			printk (KERN_INFO "Auto 10 Mbps, Full duplex\n");
+		} else if (negotiate.bits.media_10BT_HD) {
+			np->speed = 10;
+			np->full_duplex = 0;
+			printk (KERN_INFO "Auto 10 Mbps, Half duplex\n");
+		}
+		if (negotiate.bits.pause) {
+			np->tx_flow &= 1;
+			np->rx_flow &= 1;
+		} else if (negotiate.bits.asymmetric) {
+			np->tx_flow = 0;
+			np->rx_flow &= 1;
+		}
+		/* else tx_flow, rx_flow = user select  */
+	} else {
+		bmcr.image = mii_read (dev, phy_addr, MII_BMCR);
+		if (bmcr.bits.speed100 == 1 && bmcr.bits.speed1000 == 0) {
+			printk (KERN_INFO "Operating at 100 Mbps, ");
+		} else if (bmcr.bits.speed100 == 0 && bmcr.bits.speed1000 == 0) {
+			printk (KERN_INFO "Operating at 10 Mbps, ");
+		} else if (bmcr.bits.speed100 == 0 && bmcr.bits.speed1000 == 1) {
+			printk (KERN_INFO "Operating at 1000 Mbps, ");
+		}
+		if (bmcr.bits.duplex_mode) {
+			printk ("Full duplex\n");
+		} else {
+			printk ("Half duplex\n");
+		}
+	}
+	if (np->tx_flow) 
+		printk(KERN_INFO "Enable Tx Flow Control\n");
+	else	
+		printk(KERN_INFO "Disable Tx Flow Control\n");
+	if (np->rx_flow)
+		printk(KERN_INFO "Enable Rx Flow Control\n");
+	else
+		printk(KERN_INFO "Disable Rx Flow Control\n");
+
+	return 0;
+}
+
+static int
+mii_set_media (struct net_device *dev)
+{
+	PHY_SCR_t pscr;
+	BMCR_t bmcr;
+	BMSR_t bmsr;
+	ANAR_t anar;
+	int phy_addr;
+	struct netdev_private *np;
+	np = netdev_priv(dev);
+	phy_addr = np->phy_addr;
+
+	/* Does user set speed? */
+	if (np->an_enable) {
+		/* Advertise capabilities */
+		bmsr.image = mii_read (dev, phy_addr, MII_BMSR);
+		anar.image = mii_read (dev, phy_addr, MII_ANAR);
+		anar.bits.media_100BX_FD = bmsr.bits.media_100BX_FD;
+		anar.bits.media_100BX_HD = bmsr.bits.media_100BX_HD;
+		anar.bits.media_100BT4 = bmsr.bits.media_100BT4;
+		anar.bits.media_10BT_FD = bmsr.bits.media_10BT_FD;
+		anar.bits.media_10BT_HD = bmsr.bits.media_10BT_HD;
+		anar.bits.pause = 1;
+		anar.bits.asymmetric = 1;
+		mii_write (dev, phy_addr, MII_ANAR, anar.image);
+
+		/* Enable Auto crossover */
+		pscr.image = mii_read (dev, phy_addr, MII_PHY_SCR);
+		pscr.bits.mdi_crossover_mode = 3;	/* 11'b */
+		mii_write (dev, phy_addr, MII_PHY_SCR, pscr.image);
+		
+		/* Soft reset PHY */
+		mii_write (dev, phy_addr, MII_BMCR, MII_BMCR_RESET);
+		bmcr.image = 0;
+		bmcr.bits.an_enable = 1;
+		bmcr.bits.restart_an = 1;
+		bmcr.bits.reset = 1;
+		mii_write (dev, phy_addr, MII_BMCR, bmcr.image);
+		mdelay(1);
+	} else {
+		/* Force speed setting */
+		/* 1) Disable Auto crossover */
+		pscr.image = mii_read (dev, phy_addr, MII_PHY_SCR);
+		pscr.bits.mdi_crossover_mode = 0;
+		mii_write (dev, phy_addr, MII_PHY_SCR, pscr.image);
+
+		/* 2) PHY Reset */
+		bmcr.image = mii_read (dev, phy_addr, MII_BMCR);
+		bmcr.bits.reset = 1;
+		mii_write (dev, phy_addr, MII_BMCR, bmcr.image);
+
+		/* 3) Power Down */
+		bmcr.image = 0x1940;	/* must be 0x1940 */
+		mii_write (dev, phy_addr, MII_BMCR, bmcr.image);
+		mdelay (100);	/* wait a certain time */
+
+		/* 4) Advertise nothing */
+		mii_write (dev, phy_addr, MII_ANAR, 0);
+
+		/* 5) Set media and Power Up */
+		bmcr.image = 0;
+		bmcr.bits.power_down = 1;
+		if (np->speed == 100) {
+			bmcr.bits.speed100 = 1;
+			bmcr.bits.speed1000 = 0;
+			printk (KERN_INFO "Manual 100 Mbps, ");
+		} else if (np->speed == 10) {
+			bmcr.bits.speed100 = 0;
+			bmcr.bits.speed1000 = 0;
+			printk (KERN_INFO "Manual 10 Mbps, ");
+		}
+		if (np->full_duplex) {
+			bmcr.bits.duplex_mode = 1;
+			printk ("Full duplex\n");
+		} else {
+			bmcr.bits.duplex_mode = 0;
+			printk ("Half duplex\n");
+		}
+#if 0
+		/* Set 1000BaseT Master/Slave setting */
+		mscr.image = mii_read (dev, phy_addr, MII_MSCR);
+		mscr.bits.cfg_enable = 1;
+		mscr.bits.cfg_value = 0;
+#endif
+		mii_write (dev, phy_addr, MII_BMCR, bmcr.image);
+		mdelay(10);
+	}
+	return 0;
+}
+
+static int
+mii_get_media_pcs (struct net_device *dev)
+{
+	ANAR_PCS_t negotiate;
+	BMSR_t bmsr;
+	BMCR_t bmcr;
+	int phy_addr;
+	struct netdev_private *np;
+
+	np = netdev_priv(dev);
+	phy_addr = np->phy_addr;
+
+	bmsr.image = mii_read (dev, phy_addr, PCS_BMSR);
+	if (np->an_enable) {
+		if (!bmsr.bits.an_complete) {
+			/* Auto-Negotiation not completed */
+			return -1;
+		}
+		negotiate.image = mii_read (dev, phy_addr, PCS_ANAR) & 
+			mii_read (dev, phy_addr, PCS_ANLPAR);
+		np->speed = 1000;
+		if (negotiate.bits.full_duplex) {
+			printk (KERN_INFO "Auto 1000 Mbps, Full duplex\n");
+			np->full_duplex = 1;
+		} else {
+			printk (KERN_INFO "Auto 1000 Mbps, half duplex\n");
+			np->full_duplex = 0;
+		}
+		if (negotiate.bits.pause) {
+			np->tx_flow &= 1;
+			np->rx_flow &= 1;
+		} else if (negotiate.bits.asymmetric) {
+			np->tx_flow = 0;
+			np->rx_flow &= 1;
+		}
+		/* else tx_flow, rx_flow = user select  */
+	} else {
+		bmcr.image = mii_read (dev, phy_addr, PCS_BMCR);
+		printk (KERN_INFO "Operating at 1000 Mbps, ");
+		if (bmcr.bits.duplex_mode) {
+			printk ("Full duplex\n");
+		} else {
+			printk ("Half duplex\n");
+		}
+	}
+	if (np->tx_flow) 
+		printk(KERN_INFO "Enable Tx Flow Control\n");
+	else	
+		printk(KERN_INFO "Disable Tx Flow Control\n");
+	if (np->rx_flow)
+		printk(KERN_INFO "Enable Rx Flow Control\n");
+	else
+		printk(KERN_INFO "Disable Rx Flow Control\n");
+
+	return 0;
+}
+
+static int
+mii_set_media_pcs (struct net_device *dev)
+{
+	BMCR_t bmcr;
+	ESR_t esr;
+	ANAR_PCS_t anar;
+	int phy_addr;
+	struct netdev_private *np;
+	np = netdev_priv(dev);
+	phy_addr = np->phy_addr;
+
+	/* Auto-Negotiation? */
+	if (np->an_enable) {
+		/* Advertise capabilities */
+		esr.image = mii_read (dev, phy_addr, PCS_ESR);
+		anar.image = mii_read (dev, phy_addr, MII_ANAR);
+		anar.bits.half_duplex = 
+			esr.bits.media_1000BT_HD | esr.bits.media_1000BX_HD;
+		anar.bits.full_duplex = 
+			esr.bits.media_1000BT_FD | esr.bits.media_1000BX_FD;
+		anar.bits.pause = 1;
+		anar.bits.asymmetric = 1;
+		mii_write (dev, phy_addr, MII_ANAR, anar.image);
+
+		/* Soft reset PHY */
+		mii_write (dev, phy_addr, MII_BMCR, MII_BMCR_RESET);
+		bmcr.image = 0;
+		bmcr.bits.an_enable = 1;
+		bmcr.bits.restart_an = 1;
+		bmcr.bits.reset = 1;
+		mii_write (dev, phy_addr, MII_BMCR, bmcr.image);
+		mdelay(1);
+	} else {
+		/* Force speed setting */
+		/* PHY Reset */
+		bmcr.image = 0;
+		bmcr.bits.reset = 1;
+		mii_write (dev, phy_addr, MII_BMCR, bmcr.image);
+		mdelay(10);
+		bmcr.image = 0;
+		bmcr.bits.an_enable = 0;
+		if (np->full_duplex) {
+			bmcr.bits.duplex_mode = 1;
+			printk (KERN_INFO "Manual full duplex\n");
+		} else {
+			bmcr.bits.duplex_mode = 0;
+			printk (KERN_INFO "Manual half duplex\n");
+		}
+		mii_write (dev, phy_addr, MII_BMCR, bmcr.image);
+		mdelay(10);
+
+		/*  Advertise nothing */
+		mii_write (dev, phy_addr, MII_ANAR, 0);
+	}
+	return 0;
+}
+
+
+static int
+rio_close (struct net_device *dev)
+{
+	long ioaddr = dev->base_addr;
+	struct netdev_private *np = netdev_priv(dev);
+	struct sk_buff *skb;
+	int i;
+
+	netif_stop_queue (dev);
+
+	/* Disable interrupts */
+	writew (0, ioaddr + IntEnable);
+
+	/* Stop Tx and Rx logics */
+	writel (TxDisable | RxDisable | StatsDisable, ioaddr + MACCtrl);
+	synchronize_irq (dev->irq);
+	free_irq (dev->irq, dev);
+	del_timer_sync (&np->timer);
+	
+	/* Free all the skbuffs in the queue. */
+	for (i = 0; i < RX_RING_SIZE; i++) {
+		np->rx_ring[i].status = 0;
+		np->rx_ring[i].fraginfo = 0;
+		skb = np->rx_skbuff[i];
+		if (skb) {
+			pci_unmap_single (np->pdev, np->rx_ring[i].fraginfo,
+					  skb->len, PCI_DMA_FROMDEVICE);
+			dev_kfree_skb (skb);
+			np->rx_skbuff[i] = NULL;
+		}
+	}
+	for (i = 0; i < TX_RING_SIZE; i++) {
+		skb = np->tx_skbuff[i];
+		if (skb) {
+			pci_unmap_single (np->pdev, np->tx_ring[i].fraginfo,
+					  skb->len, PCI_DMA_TODEVICE);
+			dev_kfree_skb (skb);
+			np->tx_skbuff[i] = NULL;
+		}
+	}
+
+	return 0;
+}
+
+static void __devexit
+rio_remove1 (struct pci_dev *pdev)
+{
+	struct net_device *dev = pci_get_drvdata (pdev);
+
+	if (dev) {
+		struct netdev_private *np = netdev_priv(dev);
+
+		unregister_netdev (dev);
+		pci_free_consistent (pdev, RX_TOTAL_SIZE, np->rx_ring,
+				     np->rx_ring_dma);
+		pci_free_consistent (pdev, TX_TOTAL_SIZE, np->tx_ring,
+				     np->tx_ring_dma);
+#ifdef MEM_MAPPING
+		iounmap ((char *) (dev->base_addr));
+#endif
+		free_netdev (dev);
+		pci_release_regions (pdev);
+		pci_disable_device (pdev);
+	}
+	pci_set_drvdata (pdev, NULL);
+}
+
+static struct pci_driver rio_driver = {
+	.name		= "dl2k",
+	.id_table	= rio_pci_tbl,
+	.probe		= rio_probe1,
+	.remove		= __devexit_p(rio_remove1),
+};
+
+static int __init
+rio_init (void)
+{
+	return pci_module_init (&rio_driver);
+}
+
+static void __exit
+rio_exit (void)
+{
+	pci_unregister_driver (&rio_driver);
+}
+
+module_init (rio_init);
+module_exit (rio_exit);
+
+/*
+ 
+Compile command: 
+ 
+gcc -D__KERNEL__ -DMODULE -I/usr/src/linux/include -Wall -Wstrict-prototypes -O2 -c dl2k.c
+
+Read Documentation/networking/dl2k.txt for details.
+
+*/
+