text: /*
   *  Copyright (c) 1999-2005 Petko Manolov (petkan@users.sourceforge.net)
   *
   * This program is free software; you can redistribute it and/or modify
   * it under the terms of the GNU General Public License version 2 as
   * published by the Free Software Foundation.
   *
   *	ChangeLog:
   *		....	Most of the time spent on reading sources & docs.
   *		v0.2.x	First official release for the Linux kernel.
   *		v0.3.0	Beutified and structured, some bugs fixed.
   *		v0.3.x	URBifying bulk requests and bugfixing. First relatively
   *			stable release. Still can touch device's registers only
   *			from top-halves.
   *		v0.4.0	Control messages remained unurbified are now URBs.
   *			Now we can touch the HW at any time.
   *		v0.4.9	Control urbs again use process context to wait. Argh...
   *			Some long standing bugs (enable_net_traffic) fixed.
   *			Also nasty trick about resubmiting control urb from
   *			interrupt context used. Please let me know how it
   *			behaves. Pegasus II support added since this version.
   *			TODO: suppressing HCD warnings spewage on disconnect.
   *		v0.4.13	Ethernet address is now set at probe(), not at open()
   *			time as this seems to break dhcpd. 
   *		v0.5.0	branch to 2.5.x kernels
   *		v0.5.1	ethtool support added
   *		v0.5.5	rx socket buffers are in a pool and the their allocation
   * 			is out of the interrupt routine.
   */
  
  #include <linux/sched.h>
  #include <linux/slab.h>
  #include <linux/init.h>
  #include <linux/delay.h>
  #include <linux/netdevice.h>
  #include <linux/etherdevice.h>
  #include <linux/ethtool.h>
  #include <linux/mii.h>
  #include <linux/usb.h>
  #include <linux/module.h>
  #include <asm/byteorder.h>
  #include <asm/uaccess.h>
  #include "pegasus.h"
  
  /*
   * Version Information
   */
  #define DRIVER_VERSION "v0.6.14 (2006/09/27)"
  #define DRIVER_AUTHOR "Petko Manolov <petkan@users.sourceforge.net>"
  #define DRIVER_DESC "Pegasus/Pegasus II USB Ethernet driver"
  
  static const char driver_name[] = "pegasus";
  
  #undef	PEGASUS_WRITE_EEPROM
  #define	BMSR_MEDIA	(BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | \
  			BMSR_100FULL | BMSR_ANEGCAPABLE)
  
  static int loopback = 0;
  static int mii_mode = 0;
  static char *devid=NULL;
  
  static struct usb_eth_dev usb_dev_id[] = {
  #define	PEGASUS_DEV(pn, vid, pid, flags)	\
  	{.name = pn, .vendor = vid, .device = pid, .private = flags},
  #include "pegasus.h"
  #undef	PEGASUS_DEV
  	{NULL, 0, 0, 0},
  	{NULL, 0, 0, 0}
  };
  
  static struct usb_device_id pegasus_ids[] = {
  #define	PEGASUS_DEV(pn, vid, pid, flags) \
  	{.match_flags = USB_DEVICE_ID_MATCH_DEVICE, .idVendor = vid, .idProduct = pid},
  #include "pegasus.h"
  #undef	PEGASUS_DEV
  	{},
  	{}
  };
  
  MODULE_AUTHOR(DRIVER_AUTHOR);
  MODULE_DESCRIPTION(DRIVER_DESC);
  MODULE_LICENSE("GPL");
  module_param(loopback, bool, 0);
  module_param(mii_mode, bool, 0);
  module_param(devid, charp, 0);
  MODULE_PARM_DESC(loopback, "Enable MAC loopback mode (bit 0)");
  MODULE_PARM_DESC(mii_mode, "Enable HomePNA mode (bit 0),default=MII mode = 0");
  MODULE_PARM_DESC(devid, "The format is: 'DEV_name:VendorID:DeviceID:Flags'");
  
  /* use ethtool to change the level for any given device */
  static int msg_level = -1;
  module_param (msg_level, int, 0);
  MODULE_PARM_DESC (msg_level, "Override default message level");
  
  MODULE_DEVICE_TABLE(usb, pegasus_ids);
  
  static int update_eth_regs_async(pegasus_t *);
  /* Aargh!!! I _really_ hate such tweaks */
  static void ctrl_callback(struct urb *urb)
  {
  	pegasus_t *pegasus = urb->context;
  
  	if (!pegasus)
  		return;
  
  	switch (urb->status) {
  	case 0:
  		if (pegasus->flags & ETH_REGS_CHANGE) {
  			pegasus->flags &= ~ETH_REGS_CHANGE;
  			pegasus->flags |= ETH_REGS_CHANGED;
  			update_eth_regs_async(pegasus);
  			return;
  		}
  		break;
  	case -EINPROGRESS:
  		return;
  	case -ENOENT:
  		break;
  	default:
  		if (netif_msg_drv(pegasus))
  			dev_dbg(&pegasus->intf->dev, "%s, status %d\n",
  				__FUNCTION__, urb->status);
  	}
  	pegasus->flags &= ~ETH_REGS_CHANGED;
  	wake_up(&pegasus->ctrl_wait);
  }
  
  static int get_registers(pegasus_t * pegasus, __u16 indx, __u16 size,
  			 void *data)
  {
  	int ret;
  	char *buffer;
  	DECLARE_WAITQUEUE(wait, current);
  
  	buffer = kmalloc(size, GFP_KERNEL);
  	if (!buffer) {
  		if (netif_msg_drv(pegasus))
  			dev_warn(&pegasus->intf->dev, "out of memory in %s\n",
  					__FUNCTION__);
  		return -ENOMEM;
  	}
  	add_wait_queue(&pegasus->ctrl_wait, &wait);
  	set_current_state(TASK_UNINTERRUPTIBLE);
  	while (pegasus->flags & ETH_REGS_CHANGED)
  		schedule();
  	remove_wait_queue(&pegasus->ctrl_wait, &wait);
  	set_current_state(TASK_RUNNING);
  
  	pegasus->dr.bRequestType = PEGASUS_REQT_READ;
  	pegasus->dr.bRequest = PEGASUS_REQ_GET_REGS;
  	pegasus->dr.wValue = cpu_to_le16(0);
  	pegasus->dr.wIndex = cpu_to_le16p(&indx);
  	pegasus->dr.wLength = cpu_to_le16p(&size);
  	pegasus->ctrl_urb->transfer_buffer_length = size;
  
  	usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb,
  			     usb_rcvctrlpipe(pegasus->usb, 0),
  			     (char *) &pegasus->dr,
  			     buffer, size, ctrl_callback, pegasus);
  
  	add_wait_queue(&pegasus->ctrl_wait, &wait);
  	set_current_state(TASK_UNINTERRUPTIBLE);
  
  	/* using ATOMIC, we'd never wake up if we slept */
  	if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC))) {
  		set_current_state(TASK_RUNNING);
  		if (ret == -ENODEV)
  			netif_device_detach(pegasus->net);
  		if (netif_msg_drv(pegasus))
  			dev_err(&pegasus->intf->dev, "%s, status %d\n",
  					__FUNCTION__, ret);
  		goto out;
  	}
  
  	schedule();
  out:
  	remove_wait_queue(&pegasus->ctrl_wait, &wait);
  	memcpy(data, buffer, size);
  	kfree(buffer);
  
  	return ret;
  }
  
  static int set_registers(pegasus_t * pegasus, __u16 indx, __u16 size,
  			 void *data)
  {
  	int ret;
  	char *buffer;
  	DECLARE_WAITQUEUE(wait, current);
  
  	buffer = kmalloc(size, GFP_KERNEL);
  	if (!buffer) {
  		if (netif_msg_drv(pegasus))
  			dev_warn(&pegasus->intf->dev, "out of memory in %s\n",
  					__FUNCTION__);
  		return -ENOMEM;
  	}
  	memcpy(buffer, data, size);
  
  	add_wait_queue(&pegasus->ctrl_wait, &wait);
  	set_current_state(TASK_UNINTERRUPTIBLE);
  	while (pegasus->flags & ETH_REGS_CHANGED)
  		schedule();
  	remove_wait_queue(&pegasus->ctrl_wait, &wait);
  	set_current_state(TASK_RUNNING);
  
  	pegasus->dr.bRequestType = PEGASUS_REQT_WRITE;
  	pegasus->dr.bRequest = PEGASUS_REQ_SET_REGS;
  	pegasus->dr.wValue = cpu_to_le16(0);
  	pegasus->dr.wIndex = cpu_to_le16p(&indx);
  	pegasus->dr.wLength = cpu_to_le16p(&size);
  	pegasus->ctrl_urb->transfer_buffer_length = size;
  
  	usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb,
  			     usb_sndctrlpipe(pegasus->usb, 0),
  			     (char *) &pegasus->dr,
  			     buffer, size, ctrl_callback, pegasus);
  
  	add_wait_queue(&pegasus->ctrl_wait, &wait);
  	set_current_state(TASK_UNINTERRUPTIBLE);
  
  	if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC))) {
  		if (ret == -ENODEV)
  			netif_device_detach(pegasus->net);
  		if (netif_msg_drv(pegasus))
  			dev_err(&pegasus->intf->dev, "%s, status %d\n",
  					__FUNCTION__, ret);
  		goto out;
  	}
  
  	schedule();
  out:
  	remove_wait_queue(&pegasus->ctrl_wait, &wait);
  	kfree(buffer);
  
  	return ret;
  }
  
  static int set_register(pegasus_t * pegasus, __u16 indx, __u8 data)
  {
  	int ret;
  	char *tmp;
  	DECLARE_WAITQUEUE(wait, current);
  
  	tmp = kmalloc(1, GFP_KERNEL);
  	if (!tmp) {
  		if (netif_msg_drv(pegasus))
  			dev_warn(&pegasus->intf->dev, "out of memory in %s\n",
  					__FUNCTION__);
  		return -ENOMEM;
  	}
  	memcpy(tmp, &data, 1);
  	add_wait_queue(&pegasus->ctrl_wait, &wait);
  	set_current_state(TASK_UNINTERRUPTIBLE);
  	while (pegasus->flags & ETH_REGS_CHANGED)
  		schedule();
  	remove_wait_queue(&pegasus->ctrl_wait, &wait);
  	set_current_state(TASK_RUNNING);
  
  	pegasus->dr.bRequestType = PEGASUS_REQT_WRITE;
  	pegasus->dr.bRequest = PEGASUS_REQ_SET_REG;
  	pegasus->dr.wValue = cpu_to_le16(data);
  	pegasus->dr.wIndex = cpu_to_le16p(&indx);
  	pegasus->dr.wLength = cpu_to_le16(1);
  	pegasus->ctrl_urb->transfer_buffer_length = 1;
  
  	usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb,
  			     usb_sndctrlpipe(pegasus->usb, 0),
  			     (char *) &pegasus->dr,
  			     tmp, 1, ctrl_callback, pegasus);
  
  	add_wait_queue(&pegasus->ctrl_wait, &wait);
  	set_current_state(TASK_UNINTERRUPTIBLE);
  
  	if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC))) {
  		if (ret == -ENODEV)
  			netif_device_detach(pegasus->net);
  		if (netif_msg_drv(pegasus))
  			dev_err(&pegasus->intf->dev, "%s, status %d\n",
  					__FUNCTION__, ret);
  		goto out;
  	}
  
  	schedule();
  out:
  	remove_wait_queue(&pegasus->ctrl_wait, &wait);
  	kfree(tmp);
  
  	return ret;
  }
  
  static int update_eth_regs_async(pegasus_t * pegasus)
  {
  	int ret;
  
  	pegasus->dr.bRequestType = PEGASUS_REQT_WRITE;
  	pegasus->dr.bRequest = PEGASUS_REQ_SET_REGS;
  	pegasus->dr.wValue = 0;
  	pegasus->dr.wIndex = cpu_to_le16(EthCtrl0);
  	pegasus->dr.wLength = cpu_to_le16(3);
  	pegasus->ctrl_urb->transfer_buffer_length = 3;
  
  	usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb,
  			     usb_sndctrlpipe(pegasus->usb, 0),
  			     (char *) &pegasus->dr,
  			     pegasus->eth_regs, 3, ctrl_callback, pegasus);
  
  	if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC))) {
  		if (ret == -ENODEV)
  			netif_device_detach(pegasus->net);
  		if (netif_msg_drv(pegasus))
  			dev_err(&pegasus->intf->dev, "%s, status %d\n",
  					__FUNCTION__, ret);
  	}
  
  	return ret;
  }
  
  /* Returns 0 on success, error on failure */
  static int read_mii_word(pegasus_t * pegasus, __u8 phy, __u8 indx, __u16 * regd)
  {
  	int i;
  	__u8 data[4] = { phy, 0, 0, indx };
  	__le16 regdi;
  	int ret;
  
  	set_register(pegasus, PhyCtrl, 0);
  	set_registers(pegasus, PhyAddr, sizeof (data), data);
  	set_register(pegasus, PhyCtrl, (indx | PHY_READ));
  	for (i = 0; i < REG_TIMEOUT; i++) {
  		ret = get_registers(pegasus, PhyCtrl, 1, data);
  		if (ret == -ESHUTDOWN)
  			goto fail;
  		if (data[0] & PHY_DONE)
  			break;
  	}
  	if (i < REG_TIMEOUT) {
  		ret = get_registers(pegasus, PhyData, 2, &regdi);
  		*regd = le16_to_cpu(regdi);
  		return ret;
  	}
  fail:
  	if (netif_msg_drv(pegasus))
  		dev_warn(&pegasus->intf->dev, "%s failed\n", __FUNCTION__);
  
  	return ret;
  }
  
  static int mdio_read(struct net_device *dev, int phy_id, int loc)
  {
  	pegasus_t *pegasus = (pegasus_t *) netdev_priv(dev);
  	u16 res;
  
  	read_mii_word(pegasus, phy_id, loc, &res);
  	return (int)res;
  }
  
  static int write_mii_word(pegasus_t * pegasus, __u8 phy, __u8 indx, __u16 regd)
  {
  	int i;
  	__u8 data[4] = { phy, 0, 0, indx };
  	int ret;
  
  	data[1] = (u8) regd;
  	data[2] = (u8) (regd >> 8);
  	set_register(pegasus, PhyCtrl, 0);
  	set_registers(pegasus, PhyAddr, sizeof(data), data);
  	set_register(pegasus, PhyCtrl, (indx | PHY_WRITE));
  	for (i = 0; i < REG_TIMEOUT; i++) {
  		ret = get_registers(pegasus, PhyCtrl, 1, data);
  		if (ret == -ESHUTDOWN)
  			goto fail;
  		if (data[0] & PHY_DONE)
  			break;
  	}
  	if (i < REG_TIMEOUT)
  		return ret;
  
  fail:
  	if (netif_msg_drv(pegasus))
  		dev_warn(&pegasus->intf->dev, "%s failed\n", __FUNCTION__);
  	return -ETIMEDOUT;
  }
  
  static void mdio_write(struct net_device *dev, int phy_id, int loc, int val)
  {
  	pegasus_t *pegasus = (pegasus_t *) netdev_priv(dev);
  
  	write_mii_word(pegasus, phy_id, loc, val);
  }
  
  static int read_eprom_word(pegasus_t * pegasus, __u8 index, __u16 * retdata)
  {
  	int i;
  	__u8 tmp;
  	__le16 retdatai;
  	int ret;
  
  	set_register(pegasus, EpromCtrl, 0);
  	set_register(pegasus, EpromOffset, index);
  	set_register(pegasus, EpromCtrl, EPROM_READ);
  
  	for (i = 0; i < REG_TIMEOUT; i++) {
  		ret = get_registers(pegasus, EpromCtrl, 1, &tmp);
  		if (tmp & EPROM_DONE)
  			break;
  		if (ret == -ESHUTDOWN)
  			goto fail;
  	}
  	if (i < REG_TIMEOUT) {
  		ret = get_registers(pegasus, EpromData, 2, &retdatai);
  		*retdata = le16_to_cpu(retdatai);
  		return ret;
  	}
  
  fail:
  	if (netif_msg_drv(pegasus))
  		dev_warn(&pegasus->intf->dev, "%s failed\n", __FUNCTION__);
  	return -ETIMEDOUT;
  }
  
  #ifdef	PEGASUS_WRITE_EEPROM
  static inline void enable_eprom_write(pegasus_t * pegasus)
  {
  	__u8 tmp;
  	int ret;
  
  	get_registers(pegasus, EthCtrl2, 1, &tmp);
  	set_register(pegasus, EthCtrl2, tmp | EPROM_WR_ENABLE);
  }
  
  static inline void disable_eprom_write(pegasus_t * pegasus)
  {
  	__u8 tmp;
  	int ret;
  
  	get_registers(pegasus, EthCtrl2, 1, &tmp);
  	set_register(pegasus, EpromCtrl, 0);
  	set_register(pegasus, EthCtrl2, tmp & ~EPROM_WR_ENABLE);
  }
  
  static int write_eprom_word(pegasus_t * pegasus, __u8 index, __u16 data)
  {
  	int i;
  	__u8 tmp, d[4] = { 0x3f, 0, 0, EPROM_WRITE };
  	int ret;
  
  	set_registers(pegasus, EpromOffset, 4, d);
  	enable_eprom_write(pegasus);
  	set_register(pegasus, EpromOffset, index);
  	set_registers(pegasus, EpromData, 2, &data);
  	set_register(pegasus, EpromCtrl, EPROM_WRITE);
  
  	for (i = 0; i < REG_TIMEOUT; i++) {
  		ret = get_registers(pegasus, EpromCtrl, 1, &tmp);
  		if (ret == -ESHUTDOWN)
  			goto fail;
  		if (tmp & EPROM_DONE)
  			break;
  	}
  	disable_eprom_write(pegasus);
  	if (i < REG_TIMEOUT)
  		return ret;
  fail:
  	if (netif_msg_drv(pegasus))
  		dev_warn(&pegasus->intf->dev, "%s failed\n", __FUNCTION__);
  	return -ETIMEDOUT;
  }
  #endif				/* PEGASUS_WRITE_EEPROM */
  
  static inline void get_node_id(pegasus_t * pegasus, __u8 * id)
  {
  	int i;
  	__u16 w16;
  
  	for (i = 0; i < 3; i++) {
  		read_eprom_word(pegasus, i, &w16);
  		((__le16 *) id)[i] = cpu_to_le16p(&w16);
  	}
  }
  
  static void set_ethernet_addr(pegasus_t * pegasus)
  {
  	__u8 node_id[6];
  
  	if (pegasus->features & PEGASUS_II) {
  		get_registers(pegasus, 0x10, sizeof(node_id), node_id);
  	} else {
  		get_node_id(pegasus, node_id);
  		set_registers(pegasus, EthID, sizeof (node_id), node_id);
  	}
  	memcpy(pegasus->net->dev_addr, node_id, sizeof (node_id));
  }
  
  static inline int reset_mac(pegasus_t * pegasus)
  {
  	__u8 data = 0x8;
  	int i;
  
  	set_register(pegasus, EthCtrl1, data);
  	for (i = 0; i < REG_TIMEOUT; i++) {
  		get_registers(pegasus, EthCtrl1, 1, &data);
  		if (~data & 0x08) {
  			if (loopback & 1)
  				break;
  			if (mii_mode && (pegasus->features & HAS_HOME_PNA))
  				set_register(pegasus, Gpio1, 0x34);
  			else
  				set_register(pegasus, Gpio1, 0x26);
  			set_register(pegasus, Gpio0, pegasus->features);
  			set_register(pegasus, Gpio0, DEFAULT_GPIO_SET);
  			break;
  		}
  	}
  	if (i == REG_TIMEOUT)
  		return -ETIMEDOUT;
  
  	if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS ||
  	    usb_dev_id[pegasus->dev_index].vendor == VENDOR_DLINK) {
  		set_register(pegasus, Gpio0, 0x24);
  		set_register(pegasus, Gpio0, 0x26);
  	}
  	if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_ELCON) {
  		__u16 auxmode;
  		read_mii_word(pegasus, 3, 0x1b, &auxmode);
  		write_mii_word(pegasus, 3, 0x1b, auxmode | 4);
  	}
  
  	return 0;
  }
  
  static int enable_net_traffic(struct net_device *dev, struct usb_device *usb)
  {
  	__u16 linkpart;
  	__u8 data[4];
  	pegasus_t *pegasus = netdev_priv(dev);
  	int ret;
  
  	read_mii_word(pegasus, pegasus->phy, MII_LPA, &linkpart);
  	data[0] = 0xc9;
  	data[1] = 0;
  	if (linkpart & (ADVERTISE_100FULL | ADVERTISE_10FULL))
  		data[1] |= 0x20;	/* set full duplex */
  	if (linkpart & (ADVERTISE_100FULL | ADVERTISE_100HALF))
  		data[1] |= 0x10;	/* set 100 Mbps */
  	if (mii_mode)
  		data[1] = 0;
  	data[2] = (loopback & 1) ? 0x09 : 0x01;
  
  	memcpy(pegasus->eth_regs, data, sizeof (data));
  	ret = set_registers(pegasus, EthCtrl0, 3, data);
  
  	if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS ||
  	    usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS2 ||
  	    usb_dev_id[pegasus->dev_index].vendor == VENDOR_DLINK) {
  		u16 auxmode;
  		read_mii_word(pegasus, 0, 0x1b, &auxmode);
  		write_mii_word(pegasus, 0, 0x1b, auxmode | 4);
  	}
  
  	return ret;
  }
  
  static void fill_skb_pool(pegasus_t * pegasus)
  {
  	int i;
  
  	for (i = 0; i < RX_SKBS; i++) {
  		if (pegasus->rx_pool[i])
  			continue;
  		pegasus->rx_pool[i] = dev_alloc_skb(PEGASUS_MTU + 2);
  		/*
  		 ** we give up if the allocation fail. the tasklet will be
  		 ** rescheduled again anyway...
  		 */
  		if (pegasus->rx_pool[i] == NULL)
  			return;
  		skb_reserve(pegasus->rx_pool[i], 2);
  	}
  }
  
  static void free_skb_pool(pegasus_t * pegasus)
  {
  	int i;
  
  	for (i = 0; i < RX_SKBS; i++) {
  		if (pegasus->rx_pool[i]) {
  			dev_kfree_skb(pegasus->rx_pool[i]);
  			pegasus->rx_pool[i] = NULL;
  		}
  	}
  }
  
  static inline struct sk_buff *pull_skb(pegasus_t * pegasus)
  {
  	int i;
  	struct sk_buff *skb;
  
  	for (i = 0; i < RX_SKBS; i++) {
  		if (likely(pegasus->rx_pool[i] != NULL)) {
  			skb = pegasus->rx_pool[i];
  			pegasus->rx_pool[i] = NULL;
  			return skb;
  		}
  	}
  	return NULL;
  }
  
  static void read_bulk_callback(struct urb *urb)
  {
  	pegasus_t *pegasus = urb->context;
  	struct net_device *net;
  	int rx_status, count = urb->actual_length;
  	u8 *buf = urb->transfer_buffer;
  	__u16 pkt_len;
  
  	if (!pegasus)
  		return;
  
  	net = pegasus->net;
  	if (!netif_device_present(net) || !netif_running(net))
  		return;
  
  	switch (urb->status) {
  	case 0:
  		break;
  	case -ETIME:
  		if (netif_msg_rx_err(pegasus))
  			pr_debug("%s: reset MAC\n", net->name);
  		pegasus->flags &= ~PEGASUS_RX_BUSY;
  		break;
  	case -EPIPE:		/* stall, or disconnect from TT */
  		/* FIXME schedule work to clear the halt */
  		if (netif_msg_rx_err(pegasus))
  			printk(KERN_WARNING "%s: no rx stall recovery\n",
  					net->name);
  		return;
  	case -ENOENT:
  	case -ECONNRESET:
  	case -ESHUTDOWN:
  		if (netif_msg_ifdown(pegasus))
  			pr_debug("%s: rx unlink, %d\n", net->name, urb->status);
  		return;
  	default:
  		if (netif_msg_rx_err(pegasus))
  			pr_debug("%s: RX status %d\n", net->name, urb->status);
  		goto goon;
  	}
  
  	if (!count || count < 4)
  		goto goon;
  
  	rx_status = buf[count - 2];
  	if (rx_status & 0x1e) {
  		if (netif_msg_rx_err(pegasus))
  			pr_debug("%s: RX packet error %x\n",
  					net->name, rx_status);
  		pegasus->stats.rx_errors++;
  		if (rx_status & 0x06)	// long or runt
  			pegasus->stats.rx_length_errors++;
  		if (rx_status & 0x08)
  			pegasus->stats.rx_crc_errors++;
  		if (rx_status & 0x10)	// extra bits
  			pegasus->stats.rx_frame_errors++;
  		goto goon;
  	}
  	if (pegasus->chip == 0x8513) {
  		pkt_len = le32_to_cpu(*(__le32 *)urb->transfer_buffer);
  		pkt_len &= 0x0fff;
  		pegasus->rx_skb->data += 2;
  	} else {
  		pkt_len = buf[count - 3] << 8;
  		pkt_len += buf[count - 4];
  		pkt_len &= 0xfff;
  		pkt_len -= 8;
  	}
  
  	/*
  	 * If the packet is unreasonably long, quietly drop it rather than
  	 * kernel panicing by calling skb_put.
  	 */
  	if (pkt_len > PEGASUS_MTU)
  		goto goon;
  
  	/*
  	 * at this point we are sure pegasus->rx_skb != NULL
  	 * so we go ahead and pass up the packet.
  	 */
  	skb_put(pegasus->rx_skb, pkt_len);
  	pegasus->rx_skb->protocol = eth_type_trans(pegasus->rx_skb, net);
  	netif_rx(pegasus->rx_skb);
  	pegasus->stats.rx_packets++;
  	pegasus->stats.rx_bytes += pkt_len;
  
  	if (pegasus->flags & PEGASUS_UNPLUG)
  		return;
  
  	spin_lock(&pegasus->rx_pool_lock);
  	pegasus->rx_skb = pull_skb(pegasus);
  	spin_unlock(&pegasus->rx_pool_lock);
  
  	if (pegasus->rx_skb == NULL)
  		goto tl_sched;
  goon:
  	usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb,
  			  usb_rcvbulkpipe(pegasus->usb, 1),
  			  pegasus->rx_skb->data, PEGASUS_MTU + 8,
  			  read_bulk_callback, pegasus);
  	rx_status = usb_submit_urb(pegasus->rx_urb, GFP_ATOMIC);
  	if (rx_status == -ENODEV)
  		netif_device_detach(pegasus->net);
  	else if (rx_status) {
  		pegasus->flags |= PEGASUS_RX_URB_FAIL;
  		goto tl_sched;
  	} else {
  		pegasus->flags &= ~PEGASUS_RX_URB_FAIL;
  	}
  
  	return;
  
  tl_sched:
  	tasklet_schedule(&pegasus->rx_tl);
  }
  
  static void rx_fixup(unsigned long data)
  {
  	pegasus_t *pegasus;
  	unsigned long flags;
  	int status;
  
  	pegasus = (pegasus_t *) data;
  	if (pegasus->flags & PEGASUS_UNPLUG)
  		return;
  
  	spin_lock_irqsave(&pegasus->rx_pool_lock, flags);
  	fill_skb_pool(pegasus);
  	if (pegasus->flags & PEGASUS_RX_URB_FAIL)
  		if (pegasus->rx_skb)
  			goto try_again;
  	if (pegasus->rx_skb == NULL) {
  		pegasus->rx_skb = pull_skb(pegasus);
  	}
  	if (pegasus->rx_skb == NULL) {
  		if (netif_msg_rx_err(pegasus))
  			printk(KERN_WARNING "%s: low on memory\n",
  					pegasus->net->name);
  		tasklet_schedule(&pegasus->rx_tl);
  		goto done;
  	}
  	usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb,
  			  usb_rcvbulkpipe(pegasus->usb, 1),
  			  pegasus->rx_skb->data, PEGASUS_MTU + 8,
  			  read_bulk_callback, pegasus);
  try_again:
  	status = usb_submit_urb(pegasus->rx_urb, GFP_ATOMIC);
  	if (status == -ENODEV)
  		netif_device_detach(pegasus->net);
  	else if (status) {
  		pegasus->flags |= PEGASUS_RX_URB_FAIL;
  		tasklet_schedule(&pegasus->rx_tl);
  	} else {
  		pegasus->flags &= ~PEGASUS_RX_URB_FAIL;
  	}
  done:
  	spin_unlock_irqrestore(&pegasus->rx_pool_lock, flags);
  }
  
  static void write_bulk_callback(struct urb *urb)
  {
  	pegasus_t *pegasus = urb->context;
  	struct net_device *net;
  
  	if (!pegasus)
  		return;
  
  	net = pegasus->net;
  
  	if (!netif_device_present(net) || !netif_running(net))
  		return;
  
  	switch (urb->status) {
  	case -EPIPE:
  		/* FIXME schedule_work() to clear the tx halt */
  		netif_stop_queue(net);
  		if (netif_msg_tx_err(pegasus))
  			printk(KERN_WARNING "%s: no tx stall recovery\n",
  					net->name);
  		return;
  	case -ENOENT:
  	case -ECONNRESET:
  	case -ESHUTDOWN:
  		if (netif_msg_ifdown(pegasus))
  			pr_debug("%s: tx unlink, %d\n", net->name, urb->status);
  		return;
  	default:
  		if (netif_msg_tx_err(pegasus))
  			pr_info("%s: TX status %d\n", net->name, urb->status);
  		/* FALL THROUGH */
  	case 0:
  		break;
  	}
  
  	net->trans_start = jiffies;
  	netif_wake_queue(net);
  }
  
  static void intr_callback(struct urb *urb)
  {
  	pegasus_t *pegasus = urb->context;
  	struct net_device *net;
  	int status;
  
  	if (!pegasus)
  		return;
  	net = pegasus->net;
  
  	switch (urb->status) {
  	case 0:
  		break;
  	case -ECONNRESET:	/* unlink */
  	case -ENOENT:
  	case -ESHUTDOWN:
  		return;
  	default:
  		/* some Pegasus-I products report LOTS of data
  		 * toggle errors... avoid log spamming
  		 */
  		if (netif_msg_timer(pegasus))
  			pr_debug("%s: intr status %d\n", net->name,
  					urb->status);
  	}
  
  	if (urb->actual_length >= 6) {
  		u8	* d = urb->transfer_buffer;
  
  		/* byte 0 == tx_status1, reg 2B */
  		if (d[0] & (TX_UNDERRUN|EXCESSIVE_COL
  					|LATE_COL|JABBER_TIMEOUT)) {
  			pegasus->stats.tx_errors++;
  			if (d[0] & TX_UNDERRUN)
  				pegasus->stats.tx_fifo_errors++;
  			if (d[0] & (EXCESSIVE_COL | JABBER_TIMEOUT))
  				pegasus->stats.tx_aborted_errors++;
  			if (d[0] & LATE_COL)
  				pegasus->stats.tx_window_errors++;
  		}
  
  		/* d[5].LINK_STATUS lies on some adapters.
  		 * d[0].NO_CARRIER kicks in only with failed TX.
  		 * ... so monitoring with MII may be safest.
  		 */
  
  		/* bytes 3-4 == rx_lostpkt, reg 2E/2F */
  		pegasus->stats.rx_missed_errors += ((d[3] & 0x7f) << 8) | d[4];
  	}
  
  	status = usb_submit_urb(urb, GFP_ATOMIC);
  	if (status == -ENODEV)
  		netif_device_detach(pegasus->net);
  	if (status && netif_msg_timer(pegasus))
  		printk(KERN_ERR "%s: can't resubmit interrupt urb, %d\n",
  				net->name, status);
  }
  
  static void pegasus_tx_timeout(struct net_device *net)
  {
  	pegasus_t *pegasus = netdev_priv(net);
  	if (netif_msg_timer(pegasus))
  		printk(KERN_WARNING "%s: tx timeout\n", net->name);
  	usb_unlink_urb(pegasus->tx_urb);
  	pegasus->stats.tx_errors++;
  }
  
  static int pegasus_start_xmit(struct sk_buff *skb, struct net_device *net)
  {
  	pegasus_t *pegasus = netdev_priv(net);
  	int count = ((skb->len + 2) & 0x3f) ? skb->len + 2 : skb->len + 3;
  	int res;
  	__u16 l16 = skb->len;
  
  	netif_stop_queue(net);
  
  	((__le16 *) pegasus->tx_buff)[0] = cpu_to_le16(l16);
  	skb_copy_from_linear_data(skb, pegasus->tx_buff + 2, skb->len);
  	usb_fill_bulk_urb(pegasus->tx_urb, pegasus->usb,
  			  usb_sndbulkpipe(pegasus->usb, 2),
  			  pegasus->tx_buff, count,
  			  write_bulk_callback, pegasus);
  	if ((res = usb_submit_urb(pegasus->tx_urb, GFP_ATOMIC))) {
  		if (netif_msg_tx_err(pegasus))
  			printk(KERN_WARNING "%s: fail tx, %d\n",
  					net->name, res);
  		switch (res) {
  		case -EPIPE:		/* stall, or disconnect from TT */
  			/* cleanup should already have been scheduled */
  			break;
  		case -ENODEV:		/* disconnect() upcoming */
  			netif_device_detach(pegasus->net);
  			break;
  		default:
  			pegasus->stats.tx_errors++;
  			netif_start_queue(net);
  		}
  	} else {
  		pegasus->stats.tx_packets++;
  		pegasus->stats.tx_bytes += skb->len;
  		net->trans_start = jiffies;
  	}
  	dev_kfree_skb(skb);
  
  	return 0;
  }
  
  static struct net_device_stats *pegasus_netdev_stats(struct net_device *dev)
  {
  	return &((pegasus_t *) netdev_priv(dev))->stats;
  }
  
  static inline void disable_net_traffic(pegasus_t * pegasus)
  {
  	int tmp = 0;
  
  	set_registers(pegasus, EthCtrl0, 2, &tmp);
  }
  
  static inline void get_interrupt_interval(pegasus_t * pegasus)
  {
  	__u8 data[2];
  
  	read_eprom_word(pegasus, 4, (__u16 *) data);
  	if (pegasus->usb->speed != USB_SPEED_HIGH) {
  		if (data[1] < 0x80) {
  			if (netif_msg_timer(pegasus))
  				dev_info(&pegasus->intf->dev, "intr interval "
  					"changed from %ums to %ums\n",
  					data[1], 0x80);
  			data[1] = 0x80;
  #ifdef PEGASUS_WRITE_EEPROM
  			write_eprom_word(pegasus, 4, *(__u16 *) data);
  #endif
  		}
  	}
  	pegasus->intr_interval = data[1];
  }
  
  static void set_carrier(struct net_device *net)
  {
  	pegasus_t *pegasus = netdev_priv(net);
  	u16 tmp;
  
  	if (read_mii_word(pegasus, pegasus->phy, MII_BMSR, &tmp))
  		return;
  
  	if (tmp & BMSR_LSTATUS)
  		netif_carrier_on(net);
  	else
  		netif_carrier_off(net);
  }
  
  static void free_all_urbs(pegasus_t * pegasus)
  {
  	usb_free_urb(pegasus->intr_urb);
  	usb_free_urb(pegasus->tx_urb);
  	usb_free_urb(pegasus->rx_urb);
  	usb_free_urb(pegasus->ctrl_urb);
  }
  
  static void unlink_all_urbs(pegasus_t * pegasus)
  {
  	usb_kill_urb(pegasus->intr_urb);
  	usb_kill_urb(pegasus->tx_urb);
  	usb_kill_urb(pegasus->rx_urb);
  	usb_kill_urb(pegasus->ctrl_urb);
  }
  
  static int alloc_urbs(pegasus_t * pegasus)
  {
  	pegasus->ctrl_urb = usb_alloc_urb(0, GFP_KERNEL);
  	if (!pegasus->ctrl_urb) {
  		return 0;
  	}
  	pegasus->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
  	if (!pegasus->rx_urb) {
  		usb_free_urb(pegasus->ctrl_urb);
  		return 0;
  	}
  	pegasus->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
  	if (!pegasus->tx_urb) {
  		usb_free_urb(pegasus->rx_urb);
  		usb_free_urb(pegasus->ctrl_urb);
  		return 0;
  	}
  	pegasus->intr_urb = usb_alloc_urb(0, GFP_KERNEL);
  	if (!pegasus->intr_urb) {
  		usb_free_urb(pegasus->tx_urb);
  		usb_free_urb(pegasus->rx_urb);
  		usb_free_urb(pegasus->ctrl_urb);
  		return 0;
  	}
  
  	return 1;
  }
  
  static int pegasus_open(struct net_device *net)
  {
  	pegasus_t *pegasus = netdev_priv(net);
  	int res;
  
  	if (pegasus->rx_skb == NULL)
  		pegasus->rx_skb = pull_skb(pegasus);
  	/*
  	 ** Note: no point to free the pool.  it is empty :-)
  	 */
  	if (!pegasus->rx_skb)
  		return -ENOMEM;
  
  	res = set_registers(pegasus, EthID, 6, net->dev_addr);
  	
  	usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb,
  			  usb_rcvbulkpipe(pegasus->usb, 1),
  			  pegasus->rx_skb->data, PEGASUS_MTU + 8,
  			  read_bulk_callback, pegasus);
  	if ((res = usb_submit_urb(pegasus->rx_urb, GFP_KERNEL))) {
  		if (res == -ENODEV)
  			netif_device_detach(pegasus->net);
  		if (netif_msg_ifup(pegasus))
  			pr_debug("%s: failed rx_urb, %d", net->name, res);
  		goto exit;
  	}
  
  	usb_fill_int_urb(pegasus->intr_urb, pegasus->usb,
  			 usb_rcvintpipe(pegasus->usb, 3),
  			 pegasus->intr_buff, sizeof (pegasus->intr_buff),
  			 intr_callback, pegasus, pegasus->intr_interval);
  	if ((res = usb_submit_urb(pegasus->intr_urb, GFP_KERNEL))) {
  		if (res == -ENODEV)
  			netif_device_detach(pegasus->net);
  		if (netif_msg_ifup(pegasus))
  			pr_debug("%s: failed intr_urb, %d\n", net->name, res);
  		usb_kill_urb(pegasus->rx_urb);
  		goto exit;
  	}
  	if ((res = enable_net_traffic(net, pegasus->usb))) {
  		if (netif_msg_ifup(pegasus))
  			pr_debug("%s: can't enable_net_traffic() - %d\n",
  					net->name, res);
  		res = -EIO;
  		usb_kill_urb(pegasus->rx_urb);
  		usb_kill_urb(pegasus->intr_urb);
  		free_skb_pool(pegasus);
  		goto exit;
  	}
  	set_carrier(net);
  	netif_start_queue(net);
  	if (netif_msg_ifup(pegasus))
  		pr_debug("%s: open\n", net->name);
  	res = 0;
  exit:
  	return res;
  }
  
  static int pegasus_close(struct net_device *net)
  {
  	pegasus_t *pegasus = netdev_priv(net);
  
  	netif_stop_queue(net);
  	if (!(pegasus->flags & PEGASUS_UNPLUG))
  		disable_net_traffic(pegasus);
  	tasklet_kill(&pegasus->rx_tl);
  	unlink_all_urbs(pegasus);
  
  	return 0;
  }
  
  static void pegasus_get_drvinfo(struct net_device *dev,
  				struct ethtool_drvinfo *info)
  {
  	pegasus_t *pegasus = netdev_priv(dev);
  	strncpy(info->driver, driver_name, sizeof (info->driver) - 1);
  	strncpy(info->version, DRIVER_VERSION, sizeof (info->version) - 1);
  	usb_make_path(pegasus->usb, info->bus_info, sizeof (info->bus_info));
  }
  
  /* also handles three patterns of some kind in hardware */
  #define	WOL_SUPPORTED	(WAKE_MAGIC|WAKE_PHY)
  
  static void
  pegasus_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
  {
  	pegasus_t	*pegasus = netdev_priv(dev);
  
  	wol->supported = WAKE_MAGIC | WAKE_PHY;
  	wol->wolopts = pegasus->wolopts;
  }
  
  static int
  pegasus_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
  {
  	pegasus_t	*pegasus = netdev_priv(dev);
  	u8		reg78 = 0x04;
  	
  	if (wol->wolopts & ~WOL_SUPPORTED)
  		return -EINVAL;
  
  	if (wol->wolopts & WAKE_MAGIC)
  		reg78 |= 0x80;
  	if (wol->wolopts & WAKE_PHY)
  		reg78 |= 0x40;
  	/* FIXME this 0x10 bit still needs to get set in the chip... */
  	if (wol->wolopts)
  		pegasus->eth_regs[0] |= 0x10;
  	else
  		pegasus->eth_regs[0] &= ~0x10;
  	pegasus->wolopts = wol->wolopts;
  	return set_register(pegasus, WakeupControl, reg78);
  }
  
  static inline void pegasus_reset_wol(struct net_device *dev)
  {
  	struct ethtool_wolinfo wol;
  	
  	memset(&wol, 0, sizeof wol);
  	(void) pegasus_set_wol(dev, &wol);
  }
  
  static int
  pegasus_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
  {
  	pegasus_t *pegasus;
  
  	if (in_atomic())
  		return 0;
  
  	pegasus = netdev_priv(dev);
  	mii_ethtool_gset(&pegasus->mii, ecmd);
  
  	return 0;
  }
  
  static int
  pegasus_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
  {
  	pegasus_t *pegasus = netdev_priv(dev);
  	return mii_ethtool_sset(&pegasus->mii, ecmd);
  }
  
  static int pegasus_nway_reset(struct net_device *dev)
  {
  	pegasus_t *pegasus = netdev_priv(dev);
  	return mii_nway_restart(&pegasus->mii);
  }
  
  static u32 pegasus_get_link(struct net_device *dev)
  {
  	pegasus_t *pegasus = netdev_priv(dev);
  	return mii_link_ok(&pegasus->mii);
  }
  
  static u32 pegasus_get_msglevel(struct net_device *dev)
  {
  	pegasus_t *pegasus = netdev_priv(dev);
  	return pegasus->msg_enable;
  }
  
  static void pegasus_set_msglevel(struct net_device *dev, u32 v)
  {
  	pegasus_t *pegasus = netdev_priv(dev);
  	pegasus->msg_enable = v;
  }
  
  static struct ethtool_ops ops = {
  	.get_drvinfo = pegasus_get_drvinfo,
  	.get_settings = pegasus_get_settings,
  	.set_settings = pegasus_set_settings,
  	.nway_reset = pegasus_nway_reset,
  	.get_link = pegasus_get_link,
  	.get_msglevel = pegasus_get_msglevel,
  	.set_msglevel = pegasus_set_msglevel,
  	.get_wol = pegasus_get_wol,
  	.set_wol = pegasus_set_wol,
  };
  
  static int pegasus_ioctl(struct net_device *net, struct ifreq *rq, int cmd)
  {
  	__u16 *data = (__u16 *) & rq->ifr_ifru;
  	pegasus_t *pegasus = netdev_priv(net);
  	int res;
  
  	switch (cmd) {
  	case SIOCDEVPRIVATE:
  		data[0] = pegasus->phy;
  	case SIOCDEVPRIVATE + 1:
  		read_mii_word(pegasus, data[0], data[1] & 0x1f, &data[3]);
  		res = 0;
  		break;
  	case SIOCDEVPRIVATE + 2:
  		if (!capable(CAP_NET_ADMIN))
  			return -EPERM;
  		write_mii_word(pegasus, pegasus->phy, data[1] & 0x1f, data[2]);
  		res = 0;
  		break;
  	default:
  		res = -EOPNOTSUPP;
  	}
  	return res;
  }
  
  static void pegasus_set_multicast(struct net_device *net)
  {
  	pegasus_t *pegasus = netdev_priv(net);
  
  	if (net->flags & IFF_PROMISC) {
  		pegasus->eth_regs[EthCtrl2] |= RX_PROMISCUOUS;
  		if (netif_msg_link(pegasus))
  			pr_info("%s: Promiscuous mode enabled.\n", net->name);
  	} else if (net->mc_count ||
  		   (net->flags & IFF_ALLMULTI)) {
  		pegasus->eth_regs[EthCtrl0] |= RX_MULTICAST;
  		pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS;
  		if (netif_msg_link(pegasus))
  			pr_info("%s: set allmulti\n", net->name);
  	} else {
  		pegasus->eth_regs[EthCtrl0] &= ~RX_MULTICAST;
  		pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS;
  	}
  
  	pegasus->flags |= ETH_REGS_CHANGE;
  	ctrl_callback(pegasus->ctrl_urb);
  }
  
  static __u8 mii_phy_probe(pegasus_t * pegasus)
  {
  	int i;
  	__u16 tmp;
  
  	for (i = 0; i < 32; i++) {
  		read_mii_word(pegasus, i, MII_BMSR, &tmp);
  		if (tmp == 0 || tmp == 0xffff || (tmp & BMSR_MEDIA) == 0)
  			continue;
  		else
  			return i;
  	}
  
  	return 0xff;
  }
  
  static inline void setup_pegasus_II(pegasus_t * pegasus)
  {
  	__u8 data = 0xa5;
  	
  	set_register(pegasus, Reg1d, 0);
  	set_register(pegasus, Reg7b, 1);
  	mdelay(100);
  	if ((pegasus->features & HAS_HOME_PNA) && mii_mode)
  		set_register(pegasus, Reg7b, 0);
  	else
  		set_register(pegasus, Reg7b, 2);
  
  	set_register(pegasus, 0x83, data);
  	get_registers(pegasus, 0x83, 1, &data);
  
  	if (data == 0xa5) {
  		pegasus->chip = 0x8513;
  	} else {
  		pegasus->chip = 0;
  	}
  
  	set_register(pegasus, 0x80, 0xc0);
  	set_register(pegasus, 0x83, 0xff);
  	set_register(pegasus, 0x84, 0x01);
  	
  	if (pegasus->features & HAS_HOME_PNA && mii_mode)
  		set_register(pegasus, Reg81, 6);
  	else
  		set_register(pegasus, Reg81, 2);
  }
  
  
  static struct workqueue_struct *pegasus_workqueue = NULL;
  #define CARRIER_CHECK_DELAY (2 * HZ)
  
  static void check_carrier(struct work_struct *work)
  {
  	pegasus_t *pegasus = container_of(work, pegasus_t, carrier_check.work);
  	set_carrier(pegasus->net);
  	if (!(pegasus->flags & PEGASUS_UNPLUG)) {
  		queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check,
  			CARRIER_CHECK_DELAY);
  	}
  }
  
  static int pegasus_probe(struct usb_interface *intf,
  			 const struct usb_device_id *id)
  {
  	struct usb_device *dev = interface_to_usbdev(intf);
  	struct net_device *net;
  	pegasus_t *pegasus;
  	int dev_index = id - pegasus_ids;
  	int res = -ENOMEM;
  	DECLARE_MAC_BUF(mac);
  
  	usb_get_dev(dev);
  	net = alloc_etherdev(sizeof(struct pegasus));
  	if (!net) {
  		dev_err(&intf->dev, "can't allocate %s\n", "device");
  		goto out;
  	}
  
  	pegasus = netdev_priv(net);
  	pegasus->dev_index = dev_index;
  	init_waitqueue_head(&pegasus->ctrl_wait);
  
  	if (!alloc_urbs(pegasus)) {
  		dev_err(&intf->dev, "can't allocate %s\n", "urbs");
  		goto out1;
  	}
  
  	tasklet_init(&pegasus->rx_tl, rx_fixup, (unsigned long) pegasus);
  
  	INIT_DELAYED_WORK(&pegasus->carrier_check, check_carrier);
  
  	pegasus->intf = intf;
  	pegasus->usb = dev;
  	pegasus->net = net;
  	net->open = pegasus_open;
  	net->stop = pegasus_close;
  	net->watchdog_timeo = PEGASUS_TX_TIMEOUT;
  	net->tx_timeout = pegasus_tx_timeout;
  	net->do_ioctl = pegasus_ioctl;
  	net->hard_start_xmit = pegasus_start_xmit;
  	net->set_multicast_list = pegasus_set_multicast;
  	net->get_stats = pegasus_netdev_stats;
  	SET_ETHTOOL_OPS(net, &ops);
  	pegasus->mii.dev = net;
  	pegasus->mii.mdio_read = mdio_read;
  	pegasus->mii.mdio_write = mdio_write;
  	pegasus->mii.phy_id_mask = 0x1f;
  	pegasus->mii.reg_num_mask = 0x1f;
  	spin_lock_init(&pegasus->rx_pool_lock);
  	pegasus->msg_enable = netif_msg_init (msg_level, NETIF_MSG_DRV
  				| NETIF_MSG_PROBE | NETIF_MSG_LINK);
  
  	pegasus->features = usb_dev_id[dev_index].private;
  	get_interrupt_interval(pegasus);
  	if (reset_mac(pegasus)) {
  		dev_err(&intf->dev, "can't reset MAC\n");
  		res = -EIO;
  		goto out2;
  	}
  	set_ethernet_addr(pegasus);
  	fill_skb_pool(pegasus);
  	if (pegasus->features & PEGASUS_II) {
  		dev_info(&intf->dev, "setup Pegasus II specific registers\n");
  		setup_pegasus_II(pegasus);
  	}
  	pegasus->phy = mii_phy_probe(pegasus);
  	if (pegasus->phy == 0xff) {
  		dev_warn(&intf->dev, "can't locate MII phy, using default\n");
  		pegasus->phy = 1;
  	}
  	pegasus->mii.phy_id = pegasus->phy;
  	usb_set_intfdata(intf, pegasus);
  	SET_NETDEV_DEV(net, &intf->dev);
  	pegasus_reset_wol(net);
  	res = register_netdev(net);
  	if (res)
  		goto out3;
  	queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check,
  				CARRIER_CHECK_DELAY);
  
  	dev_info(&intf->dev, "%s, %s, %s\n",
  		 net->name,
  		 usb_dev_id[dev_index].name,
  		 print_mac(mac, net->dev_addr));
  	return 0;
  
  out3:
  	usb_set_intfdata(intf, NULL);
  	free_skb_pool(pegasus);
  out2:
  	free_all_urbs(pegasus);
  out1:
  	free_netdev(net);
  out:
  	usb_put_dev(dev);
  	return res;
  }
  
  static void pegasus_disconnect(struct usb_interface *intf)
  {
  	struct pegasus *pegasus = usb_get_intfdata(intf);
  
  	usb_set_intfdata(intf, NULL);
  	if (!pegasus) {
  		dev_dbg(&intf->dev, "unregistering non-bound device?\n");
  		return;
  	}
  
  	pegasus->flags |= PEGASUS_UNPLUG;
  	cancel_delayed_work(&pegasus->carrier_check);
  	unregister_netdev(pegasus->net);
  	usb_put_dev(interface_to_usbdev(intf));
  	unlink_all_urbs(pegasus);
  	free_all_urbs(pegasus);
  	free_skb_pool(pegasus);
  	if (pegasus->rx_skb != NULL) {
  		dev_kfree_skb(pegasus->rx_skb);
  		pegasus->rx_skb = NULL;
  	}
  	free_netdev(pegasus->net);
  }
  
  static int pegasus_suspend (struct usb_interface *intf, pm_message_t message)
  {
  	struct pegasus *pegasus = usb_get_intfdata(intf);
  	
  	netif_device_detach (pegasus->net);
  	cancel_delayed_work(&pegasus->carrier_check);
  	if (netif_running(pegasus->net)) {
  		usb_kill_urb(pegasus->rx_urb);
  		usb_kill_urb(pegasus->intr_urb);
  	}
  	return 0;
  }
  
  static int pegasus_resume (struct usb_interface *intf)
  {
  	struct pegasus *pegasus = usb_get_intfdata(intf);
  
  	netif_device_attach (pegasus->net);
  	if (netif_running(pegasus->net)) {
  		pegasus->rx_urb->status = 0;
  		pegasus->rx_urb->actual_length = 0;
  		read_bulk_callback(pegasus->rx_urb);
  
  		pegasus->intr_urb->status = 0;
  		pegasus->intr_urb->actual_length = 0;
  		intr_callback(pegasus->intr_urb);
  	}
  	queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check,
  				CARRIER_CHECK_DELAY);
  	return 0;
  }
  
  static struct usb_driver pegasus_driver = {
  	.name = driver_name,
  	.probe = pegasus_probe,
  	.disconnect = pegasus_disconnect,
  	.id_table = pegasus_ids,
  	.suspend = pegasus_suspend,
  	.resume = pegasus_resume,
  };
  
  static void parse_id(char *id)
  {
  	unsigned int vendor_id=0, device_id=0, flags=0, i=0;
  	char *token, *name=NULL;
  
  	if ((token = strsep(&id, ":")) != NULL)
  		name = token;
  	/* name now points to a null terminated string*/
  	if ((token = strsep(&id, ":")) != NULL)
  		vendor_id = simple_strtoul(token, NULL, 16);
  	if ((token = strsep(&id, ":")) != NULL)
  		device_id = simple_strtoul(token, NULL, 16);
  	flags = simple_strtoul(id, NULL, 16);
  	pr_info("%s: new device %s, vendor ID 0x%04x, device ID 0x%04x, flags: 0x%x\n",
  	        driver_name, name, vendor_id, device_id, flags);
  
  	if (vendor_id > 0x10000 || vendor_id == 0)
  		return;
  	if (device_id > 0x10000 || device_id == 0)
  		return;
  
  	for (i=0; usb_dev_id[i].name; i++);
  	usb_dev_id[i].name = name;
  	usb_dev_id[i].vendor = vendor_id;
  	usb_dev_id[i].device = device_id;
  	usb_dev_id[i].private = flags;
  	pegasus_ids[i].match_flags = USB_DEVICE_ID_MATCH_DEVICE;
  	pegasus_ids[i].idVendor = vendor_id;
  	pegasus_ids[i].idProduct = device_id;
  }
  
  static int __init pegasus_init(void)
  {
  	pr_info("%s: %s, " DRIVER_DESC "\n", driver_name, DRIVER_VERSION);
  	if (devid)
  		parse_id(devid);
  	pegasus_workqueue = create_singlethread_workqueue("pegasus");
  	if (!pegasus_workqueue)
  		return -ENOMEM;
  	return usb_register(&pegasus_driver);
  }
  
  static void __exit pegasus_exit(void)
  {
  	destroy_workqueue(pegasus_workqueue);
  	usb_deregister(&pegasus_driver);
  }
  
  module_init(pegasus_init);
  module_exit(pegasus_exit);
  