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, 4106 insertions, 0 deletions

diff --git a/drivers/usb/net/usbnet.c b/drivers/usb/net/usbnet.c
new file mode 100644
index 00000000000..dd8b4456ea3
--- /dev/null
+++ b/drivers/usb/net/usbnet.c
@@ -0,0 +1,4106 @@
+/*
+ * USB Networking Links
+ * Copyright (C) 2000-2003 by David Brownell <dbrownell@users.sourceforge.net>
+ * Copyright (C) 2002 Pavel Machek <pavel@ucw.cz>
+ * Copyright (C) 2003-2005 David Hollis <dhollis@davehollis.com>
+ * Copyright (C) 2005 Phil Chang <pchang23@sbcglobal.net>
+ * Copyright (c) 2002-2003 TiVo Inc.
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+/*
+ * This is a generic "USB networking" framework that works with several
+ * kinds of full and high speed networking devices:
+ *
+ *   + USB host-to-host "network cables", used for IP-over-USB links.
+ *     These are often used for Laplink style connectivity products.
+ *	- AnchorChip 2720
+ *	- Belkin, eTEK (interops with Win32 drivers)
+ *	- GeneSys GL620USB-A
+ *	- NetChip 1080 (interoperates with NetChip Win32 drivers)
+ *	- Prolific PL-2301/2302 (replaces "plusb" driver)
+ *	- KC Technology KC2190
+ *
+ *   + Smart USB devices can support such links directly, using Internet
+ *     standard protocols instead of proprietary host-to-device links.
+ *	- Linux PDAs like iPaq, Yopy, and Zaurus
+ *	- The BLOB boot loader (for diskless booting)
+ *	- Linux "gadgets", perhaps using PXA-2xx or Net2280 controllers
+ *	- Devices using EPSON's sample USB firmware
+ *	- CDC-Ethernet class devices, such as many cable modems
+ *
+ *   + Adapters to networks such as Ethernet.
+ *	- AX8817X based USB 2.0 products
+ *
+ * Links to these devices can be bridged using Linux Ethernet bridging.
+ * With minor exceptions, these all use similar USB framing for network
+ * traffic, but need different protocols for control traffic.
+ *
+ * USB devices can implement their side of this protocol at the cost
+ * of two bulk endpoints; it's not restricted to "cable" applications.
+ * See the SA1110, Zaurus, or EPSON device/client support in this driver;
+ * slave/target drivers such as "usb-eth" (on most SA-1100 PDAs) or
+ * "g_ether" (in the Linux "gadget" framework) implement that behavior
+ * within devices.
+ *
+ *
+ * CHANGELOG:
+ *
+ * 13-sep-2000	experimental, new
+ * 10-oct-2000	usb_device_id table created. 
+ * 28-oct-2000	misc fixes; mostly, discard more TTL-mangled rx packets.
+ * 01-nov-2000	usb_device_id table and probing api update by
+ *		Adam J. Richter <adam@yggdrasil.com>.
+ * 18-dec-2000	(db) tx watchdog, "net1080" renaming to "usbnet", device_info
+ *		and prolific support, isolate net1080-specific bits, cleanup.
+ *		fix unlink_urbs oops in D3 PM resume code path.
+ *
+ * 02-feb-2001	(db) fix tx skb sharing, packet length, match_flags, ...
+ * 08-feb-2001	stubbed in "linuxdev", maybe the SA-1100 folk can use it;
+ *		AnchorChips 2720 support (from spec) for testing;
+ *		fix bit-ordering problem with ethernet multicast addr
+ * 19-feb-2001  Support for clearing halt conditions. SA1100 UDC support
+ *		updates. Oleg Drokin (green@iXcelerator.com)
+ * 25-mar-2001	More SA-1100 updates, including workaround for ip problem
+ *		expecting cleared skb->cb and framing change to match latest
+ *		handhelds.org version (Oleg).  Enable device IDs from the
+ *		Win32 Belkin driver; other cleanups (db).
+ * 16-jul-2001	Bugfixes for uhci oops-on-unplug, Belkin support, various
+ *		cleanups for problems not yet seen in the field. (db)
+ * 17-oct-2001	Handle "Advance USBNET" product, like Belkin/eTEK devices,
+ *		from Ioannis Mavroukakis <i.mavroukakis@btinternet.com>;
+ *		rx unlinks somehow weren't async; minor cleanup.
+ * 03-nov-2001	Merged GeneSys driver; original code from Jiun-Jie Huang
+ *		<huangjj@genesyslogic.com.tw>, updated by Stanislav Brabec
+ *		<utx@penguin.cz>.  Made framing options (NetChip/GeneSys)
+ *		tie mostly to (sub)driver info.  Workaround some PL-2302
+ *		chips that seem to reject SET_INTERFACE requests.
+ *
+ * 06-apr-2002	Added ethtool support, based on a patch from Brad Hards.
+ *		Level of diagnostics is more configurable; they use device
+ *		location (usb_device->devpath) instead of address (2.5).
+ *		For tx_fixup, memflags can't be NOIO.
+ * 07-may-2002	Generalize/cleanup keventd support, handling rx stalls (mostly
+ *		for USB 2.0 TTs) and memory shortages (potential) too. (db)
+ *		Use "locally assigned" IEEE802 address space. (Brad Hards)
+ * 18-oct-2002	Support for Zaurus (Pavel Machek), related cleanup (db).
+ * 14-dec-2002	Remove Zaurus-private crc32 code (Pavel); 2.5 oops fix,
+ * 		cleanups and stubbed PXA-250 support (db), fix for framing
+ * 		issues on Z, net1080, and gl620a (Toby Milne)
+ *
+ * 31-mar-2003	Use endpoint descriptors:  high speed support, simpler sa1100
+ * 		vs pxa25x, and CDC Ethernet.  Throttle down log floods on
+ * 		disconnect; other cleanups. (db)  Flush net1080 fifos
+ * 		after several sequential framing errors. (Johannes Erdfelt)
+ * 22-aug-2003	AX8817X support (Dave Hollis).
+ * 14-jun-2004  Trivial patch for AX8817X based Buffalo LUA-U2-KTX in Japan
+ *		(Neil Bortnak)
+ * 03-nov-2004	Trivial patch for KC2190 (KC-190) chip. (Jonathan McDowell)
+ *
+ * 01-feb-2005	AX88772 support (Phil Chang & Dave Hollis)
+ *-------------------------------------------------------------------------*/
+
+// #define	DEBUG			// error path messages, extra info
+// #define	VERBOSE			// more; success messages
+
+#include <linux/config.h>
+#ifdef	CONFIG_USB_DEBUG
+#   define DEBUG
+#endif
+#include <linux/module.h>
+#include <linux/kmod.h>
+#include <linux/sched.h>
+#include <linux/init.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/random.h>
+#include <linux/ethtool.h>
+#include <linux/workqueue.h>
+#include <linux/mii.h>
+#include <asm/uaccess.h>
+#include <asm/unaligned.h>
+#include <linux/usb.h>
+#include <asm/io.h>
+#include <asm/scatterlist.h>
+#include <linux/mm.h>
+#include <linux/dma-mapping.h>
+
+#define DRIVER_VERSION		"03-Nov-2004"
+
+
+/*-------------------------------------------------------------------------*/
+
+/*
+ * Nineteen USB 1.1 max size bulk transactions per frame (ms), max.
+ * Several dozen bytes of IPv4 data can fit in two such transactions.
+ * One maximum size Ethernet packet takes twenty four of them.
+ * For high speed, each frame comfortably fits almost 36 max size
+ * Ethernet packets (so queues should be bigger).
+ */
+#define	RX_QLEN(dev) (((dev)->udev->speed == USB_SPEED_HIGH) ? 60 : 4)
+#define	TX_QLEN(dev) (((dev)->udev->speed == USB_SPEED_HIGH) ? 60 : 4)
+
+// packets are always ethernet inside
+// ... except they can be bigger (limit of 64K with NetChip framing)
+#define MIN_PACKET	sizeof(struct ethhdr)
+#define MAX_PACKET	32768
+
+// reawaken network queue this soon after stopping; else watchdog barks
+#define TX_TIMEOUT_JIFFIES	(5*HZ)
+
+// throttle rx/tx briefly after some faults, so khubd might disconnect()
+// us (it polls at HZ/4 usually) before we report too many false errors.
+#define THROTTLE_JIFFIES	(HZ/8)
+
+// for vendor-specific control operations
+#define	CONTROL_TIMEOUT_MS	500
+
+// between wakeups
+#define UNLINK_TIMEOUT_MS	3
+
+/*-------------------------------------------------------------------------*/
+
+// randomly generated ethernet address
+static u8	node_id [ETH_ALEN];
+
+// state we keep for each device we handle
+struct usbnet {
+	// housekeeping
+	struct usb_device	*udev;
+	struct driver_info	*driver_info;
+	wait_queue_head_t	*wait;
+
+	// i/o info: pipes etc
+	unsigned		in, out;
+	struct usb_host_endpoint *status;
+	unsigned		maxpacket;
+	struct timer_list	delay;
+
+	// protocol/interface state
+	struct net_device	*net;
+	struct net_device_stats	stats;
+	int			msg_enable;
+	unsigned long		data [5];
+
+	struct mii_if_info	mii;
+
+	// various kinds of pending driver work
+	struct sk_buff_head	rxq;
+	struct sk_buff_head	txq;
+	struct sk_buff_head	done;
+	struct urb		*interrupt;
+	struct tasklet_struct	bh;
+
+	struct work_struct	kevent;
+	unsigned long		flags;
+#		define EVENT_TX_HALT	0
+#		define EVENT_RX_HALT	1
+#		define EVENT_RX_MEMORY	2
+#		define EVENT_STS_SPLIT	3
+};
+
+// device-specific info used by the driver
+struct driver_info {
+	char		*description;
+
+	int		flags;
+/* framing is CDC Ethernet, not writing ZLPs (hw issues), or optionally: */
+#define FLAG_FRAMING_NC	0x0001		/* guard against device dropouts */ 
+#define FLAG_FRAMING_GL	0x0002		/* genelink batches packets */
+#define FLAG_FRAMING_Z	0x0004		/* zaurus adds a trailer */
+#define FLAG_FRAMING_RN	0x0008		/* RNDIS batches, plus huge header */
+
+#define FLAG_NO_SETINT	0x0010		/* device can't set_interface() */
+#define FLAG_ETHER	0x0020		/* maybe use "eth%d" names */
+
+#define FLAG_FRAMING_AX 0x0040          /* AX88772/178 packets */
+
+	/* init device ... can sleep, or cause probe() failure */
+	int	(*bind)(struct usbnet *, struct usb_interface *);
+
+	/* cleanup device ... can sleep, but can't fail */
+	void	(*unbind)(struct usbnet *, struct usb_interface *);
+
+	/* reset device ... can sleep */
+	int	(*reset)(struct usbnet *);
+
+	/* see if peer is connected ... can sleep */
+	int	(*check_connect)(struct usbnet *);
+
+	/* for status polling */
+	void	(*status)(struct usbnet *, struct urb *);
+
+	/* fixup rx packet (strip framing) */
+	int	(*rx_fixup)(struct usbnet *dev, struct sk_buff *skb);
+
+	/* fixup tx packet (add framing) */
+	struct sk_buff	*(*tx_fixup)(struct usbnet *dev,
+				struct sk_buff *skb, int flags);
+
+	// FIXME -- also an interrupt mechanism
+	// useful for at least PL2301/2302 and GL620USB-A
+	// and CDC use them to report 'is it connected' changes
+
+	/* for new devices, use the descriptor-reading code instead */
+	int		in;		/* rx endpoint */
+	int		out;		/* tx endpoint */
+
+	unsigned long	data;		/* Misc driver specific data */
+};
+
+// we record the state for each of our queued skbs
+enum skb_state {
+	illegal = 0,
+	tx_start, tx_done,
+	rx_start, rx_done, rx_cleanup
+};
+
+struct skb_data {	// skb->cb is one of these
+	struct urb		*urb;
+	struct usbnet		*dev;
+	enum skb_state		state;
+	size_t			length;
+};
+
+static const char driver_name [] = "usbnet";
+
+/* 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");
+
+
+#ifdef DEBUG
+#define devdbg(usbnet, fmt, arg...) \
+	printk(KERN_DEBUG "%s: " fmt "\n" , (usbnet)->net->name , ## arg)
+#else
+#define devdbg(usbnet, fmt, arg...) do {} while(0)
+#endif
+
+#define deverr(usbnet, fmt, arg...) \
+	printk(KERN_ERR "%s: " fmt "\n" , (usbnet)->net->name , ## arg)
+#define devwarn(usbnet, fmt, arg...) \
+	printk(KERN_WARNING "%s: " fmt "\n" , (usbnet)->net->name , ## arg)
+
+#define devinfo(usbnet, fmt, arg...) \
+	printk(KERN_INFO "%s: " fmt "\n" , (usbnet)->net->name , ## arg); \
+
+/*-------------------------------------------------------------------------*/
+
+static void usbnet_get_drvinfo (struct net_device *, struct ethtool_drvinfo *);
+static u32 usbnet_get_link (struct net_device *);
+static u32 usbnet_get_msglevel (struct net_device *);
+static void usbnet_set_msglevel (struct net_device *, u32);
+
+/* mostly for PDA style devices, which are always connected if present */
+static int always_connected (struct usbnet *dev)
+{
+	return 0;
+}
+
+/* handles CDC Ethernet and many other network "bulk data" interfaces */
+static int
+get_endpoints (struct usbnet *dev, struct usb_interface *intf)
+{
+	int				tmp;
+	struct usb_host_interface	*alt = NULL;
+	struct usb_host_endpoint	*in = NULL, *out = NULL;
+	struct usb_host_endpoint	*status = NULL;
+
+	for (tmp = 0; tmp < intf->num_altsetting; tmp++) {
+		unsigned	ep;
+
+		in = out = status = NULL;
+		alt = intf->altsetting + tmp;
+
+		/* take the first altsetting with in-bulk + out-bulk;
+		 * remember any status endpoint, just in case;
+		 * ignore other endpoints and altsetttings.
+		 */
+		for (ep = 0; ep < alt->desc.bNumEndpoints; ep++) {
+			struct usb_host_endpoint	*e;
+			int				intr = 0;
+
+			e = alt->endpoint + ep;
+			switch (e->desc.bmAttributes) {
+			case USB_ENDPOINT_XFER_INT:
+				if (!(e->desc.bEndpointAddress & USB_DIR_IN))
+					continue;
+				intr = 1;
+				/* FALLTHROUGH */
+			case USB_ENDPOINT_XFER_BULK:
+				break;
+			default:
+				continue;
+			}
+			if (e->desc.bEndpointAddress & USB_DIR_IN) {
+				if (!intr && !in)
+					in = e;
+				else if (intr && !status)
+					status = e;
+			} else {
+				if (!out)
+					out = e;
+			}
+		}
+		if (in && out)
+			break;
+	}
+	if (!alt || !in || !out)
+		return -EINVAL;
+
+	if (alt->desc.bAlternateSetting != 0
+			|| !(dev->driver_info->flags & FLAG_NO_SETINT)) {
+		tmp = usb_set_interface (dev->udev, alt->desc.bInterfaceNumber,
+				alt->desc.bAlternateSetting);
+		if (tmp < 0)
+			return tmp;
+	}
+	
+	dev->in = usb_rcvbulkpipe (dev->udev,
+			in->desc.bEndpointAddress & USB_ENDPOINT_NUMBER_MASK);
+	dev->out = usb_sndbulkpipe (dev->udev,
+			out->desc.bEndpointAddress & USB_ENDPOINT_NUMBER_MASK);
+	dev->status = status;
+	return 0;
+}
+
+static void intr_complete (struct urb *urb, struct pt_regs *regs);
+
+static int init_status (struct usbnet *dev, struct usb_interface *intf)
+{
+	char		*buf = NULL;
+	unsigned	pipe = 0;
+	unsigned	maxp;
+	unsigned	period;
+
+	if (!dev->driver_info->status)
+		return 0;
+
+	pipe = usb_rcvintpipe (dev->udev,
+			dev->status->desc.bEndpointAddress
+				& USB_ENDPOINT_NUMBER_MASK);
+	maxp = usb_maxpacket (dev->udev, pipe, 0);
+
+	/* avoid 1 msec chatter:  min 8 msec poll rate */
+	period = max ((int) dev->status->desc.bInterval,
+		(dev->udev->speed == USB_SPEED_HIGH) ? 7 : 3);
+
+	buf = kmalloc (maxp, SLAB_KERNEL);
+	if (buf) {
+		dev->interrupt = usb_alloc_urb (0, SLAB_KERNEL);
+		if (!dev->interrupt) {
+			kfree (buf);
+			return -ENOMEM;
+		} else {
+			usb_fill_int_urb(dev->interrupt, dev->udev, pipe,
+				buf, maxp, intr_complete, dev, period);
+			dev_dbg(&intf->dev,
+				"status ep%din, %d bytes period %d\n",
+				usb_pipeendpoint(pipe), maxp, period);
+		}
+	}
+	return  0;
+}
+
+static void skb_return (struct usbnet *dev, struct sk_buff *skb)
+{
+	int	status;
+
+	skb->dev = dev->net;
+	skb->protocol = eth_type_trans (skb, dev->net);
+	dev->stats.rx_packets++;
+	dev->stats.rx_bytes += skb->len;
+
+	if (netif_msg_rx_status (dev))
+		devdbg (dev, "< rx, len %d, type 0x%x",
+			skb->len + sizeof (struct ethhdr), skb->protocol);
+	memset (skb->cb, 0, sizeof (struct skb_data));
+	status = netif_rx (skb);
+	if (status != NET_RX_SUCCESS && netif_msg_rx_err (dev))
+		devdbg (dev, "netif_rx status %d", status);
+}
+
+
+#ifdef	CONFIG_USB_ALI_M5632
+#define	HAVE_HARDWARE
+
+/*-------------------------------------------------------------------------
+ *
+ * ALi M5632 driver ... does high speed
+ *
+ *-------------------------------------------------------------------------*/
+
+static const struct driver_info	ali_m5632_info = {
+	.description =	"ALi M5632",
+};
+
+
+#endif
+
+
+#ifdef	CONFIG_USB_AN2720
+#define	HAVE_HARDWARE
+
+/*-------------------------------------------------------------------------
+ *
+ * AnchorChips 2720 driver ... http://www.cypress.com
+ *
+ * This doesn't seem to have a way to detect whether the peer is
+ * connected, or need any reset handshaking.  It's got pretty big
+ * internal buffers (handles most of a frame's worth of data).
+ * Chip data sheets don't describe any vendor control messages.
+ *
+ *-------------------------------------------------------------------------*/
+
+static const struct driver_info	an2720_info = {
+	.description =	"AnchorChips/Cypress 2720",
+	// no reset available!
+	// no check_connect available!
+
+	.in = 2, .out = 2,		// direction distinguishes these
+};
+
+#endif	/* CONFIG_USB_AN2720 */
+
+
+#ifdef CONFIG_USB_AX8817X
+/* ASIX AX8817X based USB 2.0 Ethernet Devices */
+
+#define HAVE_HARDWARE
+#define NEED_MII
+
+#include <linux/crc32.h>
+
+#define AX_CMD_SET_SW_MII		0x06
+#define AX_CMD_READ_MII_REG		0x07
+#define AX_CMD_WRITE_MII_REG		0x08
+#define AX_CMD_SET_HW_MII		0x0a
+#define AX_CMD_READ_EEPROM		0x0b
+#define AX_CMD_WRITE_EEPROM		0x0c
+#define AX_CMD_WRITE_ENABLE		0x0d
+#define AX_CMD_WRITE_DISABLE		0x0e
+#define AX_CMD_WRITE_RX_CTL		0x10
+#define AX_CMD_READ_IPG012		0x11
+#define AX_CMD_WRITE_IPG0		0x12
+#define AX_CMD_WRITE_IPG1		0x13
+#define AX_CMD_WRITE_IPG2		0x14
+#define AX_CMD_WRITE_MULTI_FILTER	0x16
+#define AX_CMD_READ_NODE_ID		0x17
+#define AX_CMD_READ_PHY_ID		0x19
+#define AX_CMD_WRITE_MEDIUM_MODE	0x1b
+#define AX_CMD_READ_MONITOR_MODE	0x1c
+#define AX_CMD_WRITE_MONITOR_MODE	0x1d
+#define AX_CMD_WRITE_GPIOS		0x1f
+#define AX_CMD_SW_RESET			0x20
+#define AX_CMD_SW_PHY_STATUS		0x21
+#define AX_CMD_SW_PHY_SELECT		0x22
+#define AX88772_CMD_READ_NODE_ID	0x13
+
+#define AX_MONITOR_MODE			0x01
+#define AX_MONITOR_LINK			0x02
+#define AX_MONITOR_MAGIC		0x04
+#define AX_MONITOR_HSFS			0x10
+
+#define AX_MCAST_FILTER_SIZE		8
+#define AX_MAX_MCAST			64
+
+#define AX_INTERRUPT_BUFSIZE		8
+
+#define AX_EEPROM_LEN			0x40
+
+#define AX_SWRESET_CLEAR		0x00
+#define AX_SWRESET_RR			0x01
+#define AX_SWRESET_RT			0x02
+#define AX_SWRESET_PRTE			0x04
+#define AX_SWRESET_PRL			0x08
+#define AX_SWRESET_BZ			0x10
+#define AX_SWRESET_IPRL			0x20
+#define AX_SWRESET_IPPD			0x40
+
+#define AX88772_IPG0_DEFAULT		0x15
+#define AX88772_IPG1_DEFAULT		0x0c
+#define AX88772_IPG2_DEFAULT		0x12
+
+#define AX_EEPROM_MAGIC			0xdeadbeef
+
+/* This structure cannot exceed sizeof(unsigned long [5]) AKA 20 bytes */
+struct ax8817x_data {
+	u8 multi_filter[AX_MCAST_FILTER_SIZE];
+	struct urb *int_urb;
+	u8 *int_buf;
+};
+
+static int ax8817x_read_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index,
+			    u16 size, void *data)
+{
+	return usb_control_msg(
+		dev->udev,
+		usb_rcvctrlpipe(dev->udev, 0),
+		cmd,
+		USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+		value,
+		index,
+		data,
+		size,
+		CONTROL_TIMEOUT_MS);
+}
+
+static int ax8817x_write_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index,
+			     u16 size, void *data)
+{
+	return usb_control_msg(
+		dev->udev,
+		usb_sndctrlpipe(dev->udev, 0),
+		cmd,
+		USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+		value,
+		index,
+		data,
+		size,
+		CONTROL_TIMEOUT_MS);
+}
+
+static void ax8817x_async_cmd_callback(struct urb *urb, struct pt_regs *regs)
+{
+	struct usb_ctrlrequest *req = (struct usb_ctrlrequest *)urb->context;
+
+	if (urb->status < 0)
+		printk(KERN_DEBUG "ax8817x_async_cmd_callback() failed with %d",
+			urb->status);
+
+	kfree(req);
+	usb_free_urb(urb);
+}
+
+static void ax8817x_interrupt_complete(struct urb *urb, struct pt_regs *regs)
+{
+	struct usbnet *dev = (struct usbnet *)urb->context;
+	struct ax8817x_data *data = (struct ax8817x_data *)&dev->data;
+	int link;
+
+	if (urb->status < 0) {
+		devdbg(dev,"ax8817x_interrupt_complete() failed with %d",
+			urb->status);
+	} else {
+		link = data->int_buf[2] & 0x01;
+		if (netif_carrier_ok(dev->net) != link) {
+			if (link)
+				netif_carrier_on(dev->net);
+			else
+				netif_carrier_off(dev->net);
+			devdbg(dev, "ax8817x - Link Status is: %d", link);
+		}
+		usb_submit_urb(data->int_urb, GFP_ATOMIC);
+	}
+}
+
+static void ax8817x_write_cmd_async(struct usbnet *dev, u8 cmd, u16 value, u16 index,
+				    u16 size, void *data)
+{
+	struct usb_ctrlrequest *req;
+	int status;
+	struct urb *urb;
+
+	if ((urb = usb_alloc_urb(0, GFP_ATOMIC)) == NULL) {
+		devdbg(dev, "Error allocating URB in write_cmd_async!");
+		return;
+	}
+
+	if ((req = kmalloc(sizeof(struct usb_ctrlrequest), GFP_ATOMIC)) == NULL) {
+		deverr(dev, "Failed to allocate memory for control request");
+		usb_free_urb(urb);
+		return;
+	}
+
+	req->bRequestType = USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE;
+	req->bRequest = cmd;
+	req->wValue = cpu_to_le16(value);
+	req->wIndex = cpu_to_le16(index); 
+	req->wLength = cpu_to_le16(size);
+
+	usb_fill_control_urb(urb, dev->udev,
+			     usb_sndctrlpipe(dev->udev, 0),
+			     (void *)req, data, size,
+			     ax8817x_async_cmd_callback, req);
+
+	if((status = usb_submit_urb(urb, GFP_ATOMIC)) < 0) {
+		deverr(dev, "Error submitting the control message: status=%d", status);
+		kfree(req);
+		usb_free_urb(urb);
+	}
+}
+
+static void ax8817x_set_multicast(struct net_device *net)
+{
+	struct usbnet *dev = netdev_priv(net);
+	struct ax8817x_data *data = (struct ax8817x_data *)&dev->data;
+	u8 rx_ctl = 0x8c;
+
+	if (net->flags & IFF_PROMISC) {
+		rx_ctl |= 0x01;
+	} else if (net->flags & IFF_ALLMULTI
+		   || net->mc_count > AX_MAX_MCAST) {
+		rx_ctl |= 0x02;
+	} else if (net->mc_count == 0) {
+		/* just broadcast and directed */
+	} else {
+		/* We use the 20 byte dev->data
+		 * for our 8 byte filter buffer
+		 * to avoid allocating memory that
+		 * is tricky to free later */
+		struct dev_mc_list *mc_list = net->mc_list;
+		u32 crc_bits;
+		int i;
+
+		memset(data->multi_filter, 0, AX_MCAST_FILTER_SIZE);
+
+		/* Build the multicast hash filter. */
+		for (i = 0; i < net->mc_count; i++) {
+			crc_bits =
+			    ether_crc(ETH_ALEN,
+				      mc_list->dmi_addr) >> 26;
+			data->multi_filter[crc_bits >> 3] |=
+			    1 << (crc_bits & 7);
+			mc_list = mc_list->next;
+		}
+
+		ax8817x_write_cmd_async(dev, AX_CMD_WRITE_MULTI_FILTER, 0, 0,
+				   AX_MCAST_FILTER_SIZE, data->multi_filter);
+
+		rx_ctl |= 0x10;
+	}
+
+	ax8817x_write_cmd_async(dev, AX_CMD_WRITE_RX_CTL, rx_ctl, 0, 0, NULL);
+}
+
+static int ax8817x_mdio_read(struct net_device *netdev, int phy_id, int loc)
+{
+	struct usbnet *dev = netdev_priv(netdev);
+	u16 res;
+	u8 buf[1];
+
+	ax8817x_write_cmd(dev, AX_CMD_SET_SW_MII, 0, 0, 0, &buf);
+	ax8817x_read_cmd(dev, AX_CMD_READ_MII_REG, phy_id, (__u16)loc, 2, (u16 *)&res);
+	ax8817x_write_cmd(dev, AX_CMD_SET_HW_MII, 0, 0, 0, &buf);
+
+	return res & 0xffff;
+}
+
+static void ax8817x_mdio_write(struct net_device *netdev, int phy_id, int loc, int val)
+{
+	struct usbnet *dev = netdev_priv(netdev);
+	u16 res = val;
+	u8 buf[1];
+
+	ax8817x_write_cmd(dev, AX_CMD_SET_SW_MII, 0, 0, 0, &buf);
+	ax8817x_write_cmd(dev, AX_CMD_WRITE_MII_REG, phy_id, (__u16)loc, 2, (u16 *)&res);
+	ax8817x_write_cmd(dev, AX_CMD_SET_HW_MII, 0, 0, 0, &buf);
+}
+
+static void ax8817x_get_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo)
+{
+	struct usbnet *dev = netdev_priv(net);
+	u8 opt;
+
+	if (ax8817x_read_cmd(dev, AX_CMD_READ_MONITOR_MODE, 0, 0, 1, &opt) < 0) {
+		wolinfo->supported = 0;
+		wolinfo->wolopts = 0;
+		return;
+	}
+	wolinfo->supported = WAKE_PHY | WAKE_MAGIC;
+	wolinfo->wolopts = 0;
+	if (opt & AX_MONITOR_MODE) {
+		if (opt & AX_MONITOR_LINK)
+			wolinfo->wolopts |= WAKE_PHY;
+		if (opt & AX_MONITOR_MAGIC)
+			wolinfo->wolopts |= WAKE_MAGIC;
+	}
+}
+
+static int ax8817x_set_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo)
+{
+	struct usbnet *dev = netdev_priv(net);
+	u8 opt = 0;
+	u8 buf[1];
+
+	if (wolinfo->wolopts & WAKE_PHY)
+		opt |= AX_MONITOR_LINK;
+	if (wolinfo->wolopts & WAKE_MAGIC)
+		opt |= AX_MONITOR_MAGIC;
+	if (opt != 0)
+		opt |= AX_MONITOR_MODE;
+
+	if (ax8817x_write_cmd(dev, AX_CMD_WRITE_MONITOR_MODE,
+			      opt, 0, 0, &buf) < 0)
+		return -EINVAL;
+
+	return 0;
+}
+
+static int ax8817x_get_eeprom_len(struct net_device *net)
+{
+	return AX_EEPROM_LEN;
+}
+
+static int ax8817x_get_eeprom(struct net_device *net,
+			      struct ethtool_eeprom *eeprom, u8 *data)
+{
+	struct usbnet *dev = netdev_priv(net);
+	u16 *ebuf = (u16 *)data;
+	int i;
+
+	/* Crude hack to ensure that we don't overwrite memory
+	 * if an odd length is supplied
+	 */
+	if (eeprom->len % 2)
+		return -EINVAL;
+
+	eeprom->magic = AX_EEPROM_MAGIC;
+
+	/* ax8817x returns 2 bytes from eeprom on read */
+	for (i=0; i < eeprom->len / 2; i++) {
+		if (ax8817x_read_cmd(dev, AX_CMD_READ_EEPROM, 
+			eeprom->offset + i, 0, 2, &ebuf[i]) < 0)
+			return -EINVAL;
+	}
+	return 0;
+}
+
+static void ax8817x_get_drvinfo (struct net_device *net,
+				 struct ethtool_drvinfo *info)
+{
+	/* Inherit standard device info */
+	usbnet_get_drvinfo(net, info);
+	info->eedump_len = 0x3e;
+}
+
+static int ax8817x_get_settings(struct net_device *net, struct ethtool_cmd *cmd)
+{
+	struct usbnet *dev = netdev_priv(net);
+
+	return mii_ethtool_gset(&dev->mii,cmd);
+}
+
+static int ax8817x_set_settings(struct net_device *net, struct ethtool_cmd *cmd)
+{
+	struct usbnet *dev = netdev_priv(net);
+
+	return mii_ethtool_sset(&dev->mii,cmd);
+}
+
+/* We need to override some ethtool_ops so we require our
+   own structure so we don't interfere with other usbnet
+   devices that may be connected at the same time. */
+static struct ethtool_ops ax8817x_ethtool_ops = {
+	.get_drvinfo		= ax8817x_get_drvinfo,
+	.get_link		= ethtool_op_get_link,
+	.get_msglevel		= usbnet_get_msglevel,
+	.set_msglevel		= usbnet_set_msglevel,
+	.get_wol		= ax8817x_get_wol,
+	.set_wol		= ax8817x_set_wol,
+	.get_eeprom_len		= ax8817x_get_eeprom_len,
+	.get_eeprom		= ax8817x_get_eeprom,
+	.get_settings		= ax8817x_get_settings,
+	.set_settings		= ax8817x_set_settings,
+};
+
+static int ax8817x_bind(struct usbnet *dev, struct usb_interface *intf)
+{
+	int ret = 0;
+	void *buf;
+	int i;
+	unsigned long gpio_bits = dev->driver_info->data;
+	struct ax8817x_data *data = (struct ax8817x_data *)dev->data;
+
+	get_endpoints(dev,intf);
+
+	if ((data->int_urb = usb_alloc_urb (0, GFP_KERNEL)) == NULL) {
+		dbg ("%s: cannot allocate interrupt URB",
+			dev->net->name);
+		ret = -ENOMEM;
+		goto out1;
+	}
+	
+	if ((data->int_buf = kmalloc(AX_INTERRUPT_BUFSIZE, GFP_KERNEL)) == NULL) {
+		dbg ("%s: cannot allocate memory for interrupt buffer",
+			dev->net->name);
+		ret = -ENOMEM;
+		goto out1;
+	}
+	memset(data->int_buf, 0, AX_INTERRUPT_BUFSIZE);
+
+	usb_fill_int_urb (data->int_urb, dev->udev,
+		usb_rcvintpipe (dev->udev, 1),
+		data->int_buf, AX_INTERRUPT_BUFSIZE,
+		ax8817x_interrupt_complete, dev,
+		dev->udev->speed == USB_SPEED_HIGH ? 8 : 100);
+
+	buf = kmalloc(ETH_ALEN, GFP_KERNEL);
+	if(!buf) {
+		ret = -ENOMEM;
+		goto out2;
+	}
+
+	/* Toggle the GPIOs in a manufacturer/model specific way */
+	for (i = 2; i >= 0; i--) {
+		if ((ret = ax8817x_write_cmd(dev, AX_CMD_WRITE_GPIOS,
+					(gpio_bits >> (i * 8)) & 0xff, 0, 0,
+					buf)) < 0)
+			goto out3;
+		msleep(5);
+	}
+
+	if ((ret = ax8817x_write_cmd(dev, AX_CMD_WRITE_RX_CTL, 0x80, 0, 0, buf)) < 0) {
+		dbg("send AX_CMD_WRITE_RX_CTL failed: %d", ret);
+		goto out3;
+	}
+
+	/* Get the MAC address */
+	memset(buf, 0, ETH_ALEN);
+	if ((ret = ax8817x_read_cmd(dev, AX_CMD_READ_NODE_ID, 0, 0, 6, buf)) < 0) {
+		dbg("read AX_CMD_READ_NODE_ID failed: %d", ret);
+		goto out3;
+	}
+	memcpy(dev->net->dev_addr, buf, ETH_ALEN);
+
+	/* Get the PHY id */
+	if ((ret = ax8817x_read_cmd(dev, AX_CMD_READ_PHY_ID, 0, 0, 2, buf)) < 0) {
+		dbg("error on read AX_CMD_READ_PHY_ID: %02x", ret);
+		goto out3;
+	} else if (ret < 2) {
+		/* this should always return 2 bytes */
+		dbg("AX_CMD_READ_PHY_ID returned less than 2 bytes: ret=%02x", ret);
+		ret = -EIO;
+		goto out3;
+	}
+
+	/* Initialize MII structure */
+	dev->mii.dev = dev->net;
+	dev->mii.mdio_read = ax8817x_mdio_read;
+	dev->mii.mdio_write = ax8817x_mdio_write;
+	dev->mii.phy_id_mask = 0x3f;
+	dev->mii.reg_num_mask = 0x1f;
+	dev->mii.phy_id = *((u8 *)buf + 1);
+
+	dev->net->set_multicast_list = ax8817x_set_multicast;
+	dev->net->ethtool_ops = &ax8817x_ethtool_ops;
+
+	ax8817x_mdio_write(dev->net, dev->mii.phy_id, MII_BMCR,
+			cpu_to_le16(BMCR_RESET));
+	ax8817x_mdio_write(dev->net, dev->mii.phy_id, MII_ADVERTISE,
+			cpu_to_le16(ADVERTISE_ALL | ADVERTISE_CSMA | 0x0400));
+	mii_nway_restart(&dev->mii);
+
+	if((ret = usb_submit_urb(data->int_urb, GFP_KERNEL)) < 0) {
+		dbg("Failed to submit interrupt URB: %02x", ret);
+		goto out2;
+	}
+
+	return 0;
+out3:
+	kfree(buf);
+out2:
+	kfree(data->int_buf);
+out1:
+	usb_free_urb(data->int_urb);
+	return ret;
+}
+
+static void ax8817x_unbind(struct usbnet *dev, struct usb_interface *intf)
+{
+	struct ax8817x_data *data = (struct ax8817x_data *)dev->data;
+
+	usb_kill_urb(data->int_urb);
+	usb_free_urb(data->int_urb);
+	kfree(data->int_buf);
+}
+
+static struct ethtool_ops ax88772_ethtool_ops = {
+	.get_drvinfo		= ax8817x_get_drvinfo,
+	.get_link		= ethtool_op_get_link,
+	.get_msglevel		= usbnet_get_msglevel,
+	.set_msglevel		= usbnet_set_msglevel,
+	.get_wol		= ax8817x_get_wol,
+	.set_wol		= ax8817x_set_wol,
+	.get_eeprom_len		= ax8817x_get_eeprom_len,
+	.get_eeprom		= ax8817x_get_eeprom,
+	.get_settings		= ax8817x_get_settings,
+	.set_settings		= ax8817x_set_settings,
+};
+
+static int ax88772_bind(struct usbnet *dev, struct usb_interface *intf)
+{
+	int ret;
+	void *buf;
+	struct ax8817x_data *data = (struct ax8817x_data *)dev->data;
+
+	get_endpoints(dev,intf);
+
+	if ((data->int_urb = usb_alloc_urb (0, GFP_KERNEL)) == 0) {
+		dbg ("Cannot allocate interrupt URB");
+		ret = -ENOMEM;
+		goto out1;
+	}
+	
+	if ((data->int_buf = kmalloc(AX_INTERRUPT_BUFSIZE, GFP_KERNEL)) == NULL) {
+		dbg ("Cannot allocate memory for interrupt buffer");
+		ret = -ENOMEM;
+		goto out1;
+	}
+	memset(data->int_buf, 0, AX_INTERRUPT_BUFSIZE);
+
+	usb_fill_int_urb (data->int_urb, dev->udev,
+		usb_rcvintpipe (dev->udev, 1),
+		data->int_buf, AX_INTERRUPT_BUFSIZE,
+		ax8817x_interrupt_complete, dev,
+		dev->udev->speed == USB_SPEED_HIGH ? 8 : 100);
+
+	buf = kmalloc(6, GFP_KERNEL);
+	if(!buf) {
+		dbg ("Cannot allocate memory for buffer");
+		ret = -ENOMEM;
+		goto out2;
+	}
+
+	if ((ret = ax8817x_write_cmd(dev, AX_CMD_WRITE_GPIOS,
+				     0x00B0, 0, 0, buf)) < 0)
+		goto out3;
+
+	msleep(5);
+	if ((ret = ax8817x_write_cmd(dev, AX_CMD_SW_PHY_SELECT, 0x0001, 0, 0, buf)) < 0) {
+		dbg("Select PHY #1 failed: %d", ret);
+		goto out3;
+	}
+
+	if ((ret =
+	     ax8817x_write_cmd(dev, AX_CMD_SW_RESET, AX_SWRESET_IPPD, 0, 0, buf)) < 0) {
+		dbg("Failed to power down internal PHY: %d", ret);
+		goto out3;
+	}
+
+	msleep(150);
+	if ((ret =
+	     ax8817x_write_cmd(dev, AX_CMD_SW_RESET, AX_SWRESET_CLEAR, 0, 0, buf)) < 0) {
+		dbg("Failed to perform software reset: %d", ret);
+		goto out3;
+	}
+
+	msleep(150);
+	if ((ret =
+	     ax8817x_write_cmd(dev, AX_CMD_SW_RESET, AX_SWRESET_IPRL | AX_SWRESET_PRL, 0, 0, buf)) < 0) {
+		dbg("Failed to set Internal/External PHY reset control: %d", ret);
+		goto out3;
+	}
+
+	msleep(150);
+	if ((ret =
+	     ax8817x_write_cmd(dev, AX_CMD_WRITE_RX_CTL, 0x0000, 0, 0,
+			       buf)) < 0) {
+		dbg("Failed to reset RX_CTL: %d", ret);
+		goto out3;
+	}
+
+	/* Get the MAC address */
+	memset(buf, 0, ETH_ALEN);
+	if ((ret = ax8817x_read_cmd(dev, AX88772_CMD_READ_NODE_ID, 0, 0, ETH_ALEN, buf)) < 0) {
+		dbg("Failed to read MAC address: %d", ret);
+		goto out3;
+	}
+	memcpy(dev->net->dev_addr, buf, ETH_ALEN);
+
+	if ((ret = ax8817x_write_cmd(dev, AX_CMD_SET_SW_MII, 0, 0, 0, buf)) < 0) {
+		dbg("Enabling software MII failed: %d", ret);
+		goto out3;
+	}
+
+	if (((ret =
+	      ax8817x_read_cmd(dev, AX_CMD_READ_MII_REG, 0x0010, 2, 2, buf)) < 0)
+	    || (*((u16 *)buf) != 0x003b)) {
+		dbg("Read PHY register 2 must be 0x3b00: %d", ret);
+		goto out3;
+	}
+
+	/* Initialize MII structure */
+	dev->mii.dev = dev->net;
+	dev->mii.mdio_read = ax8817x_mdio_read;
+	dev->mii.mdio_write = ax8817x_mdio_write;
+	dev->mii.phy_id_mask = 0xff;
+	dev->mii.reg_num_mask = 0xff;
+
+	/* Get the PHY id */
+	if ((ret = ax8817x_read_cmd(dev, AX_CMD_READ_PHY_ID, 0, 0, 2, buf)) < 0) {
+		dbg("Error reading PHY ID: %02x", ret);
+		goto out3;
+	} else if (ret < 2) {
+		/* this should always return 2 bytes */
+		dbg("AX_CMD_READ_PHY_ID returned less than 2 bytes: ret=%02x",
+		    ret);
+		ret = -EIO;
+		goto out3;
+	}
+	dev->mii.phy_id = *((u8 *)buf + 1);
+
+	if ((ret =
+	     ax8817x_write_cmd(dev, AX_CMD_SW_RESET, AX_SWRESET_PRL, 0, 0, buf)) < 0) {
+		dbg("Set external PHY reset pin level: %d", ret);
+		goto out3;
+	}
+	msleep(150);
+	if ((ret =
+	     ax8817x_write_cmd(dev, AX_CMD_SW_RESET, AX_SWRESET_IPRL | AX_SWRESET_PRL, 0, 0, buf)) < 0) {
+		dbg("Set Internal/External PHY reset control: %d", ret);
+		goto out3;
+	}
+	msleep(150);
+
+
+	dev->net->set_multicast_list = ax8817x_set_multicast;
+	dev->net->ethtool_ops = &ax88772_ethtool_ops;
+
+	ax8817x_mdio_write(dev->net, dev->mii.phy_id, MII_BMCR,
+			cpu_to_le16(BMCR_RESET));
+	ax8817x_mdio_write(dev->net, dev->mii.phy_id, MII_ADVERTISE,
+			cpu_to_le16(ADVERTISE_ALL | ADVERTISE_CSMA));
+	mii_nway_restart(&dev->mii);
+
+	if ((ret = ax8817x_write_cmd(dev, AX_CMD_WRITE_MEDIUM_MODE, 0x0336, 0, 0, buf)) < 0) {
+		dbg("Write medium mode register: %d", ret);
+		goto out3;
+	}
+
+	if ((ret = ax8817x_write_cmd(dev, AX_CMD_WRITE_IPG0, AX88772_IPG0_DEFAULT | AX88772_IPG1_DEFAULT,AX88772_IPG2_DEFAULT, 0, buf)) < 0) {
+		dbg("Write IPG,IPG1,IPG2 failed: %d", ret);
+		goto out3;
+	}
+	if ((ret =
+	     ax8817x_write_cmd(dev, AX_CMD_SET_HW_MII, 0, 0, 0, &buf)) < 0) {
+		dbg("Failed to set hardware MII: %02x", ret);
+		goto out3;
+	}