[linux-2.6-block.git] / drivers / net / usb / mcs7830.c

/*
 * MosChips MCS7830 based USB 2.0 Ethernet Devices
 *
 * based on usbnet.c, asix.c and the vendor provided mcs7830 driver
 *
 * Copyright (C) 2010 Andreas Mohr <andi@lisas.de>
 * Copyright (C) 2006 Arnd Bergmann <arnd@arndb.de>
 * Copyright (C) 2003-2005 David Hollis <dhollis@davehollis.com>
 * Copyright (C) 2005 Phil Chang <pchang23@sbcglobal.net>
 * Copyright (c) 2002-2003 TiVo Inc.
 *
 * Definitions gathered from MOSCHIP, Data Sheet_7830DA.pdf (thanks!).
 *
 * TODO:
 * - add .reset_resume support (iface is _gone_ after resume w/ power loss)
 * - verify that mcs7830_get_regs() does have same output pre-/post-suspend
 * - support HIF_REG_CONFIG_SLEEPMODE/HIF_REG_CONFIG_TXENABLE (via autopm?)
 * - implement ethtool_ops get_pauseparam/set_pauseparam
 *   via HIF_REG_PAUSE_THRESHOLD (>= revision C only!)
 * - implement get_eeprom/[set_eeprom]
 * - switch PHY on/off on ifup/ifdown (perhaps in usbnet.c, via MII)
 * - mcs7830_get_regs() handling is weird: for rev 2 we return 32 regs,
 *   can access only ~ 24, remaining user buffer is uninitialized garbage
 * - anything else?
 *
 *
 * 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
 */

#include <linux/crc32.h>
#include <linux/etherdevice.h>
#include <linux/ethtool.h>
#include <linux/init.h>
#include <linux/mii.h>
#include <linux/module.h>
#include <linux/netdevice.h>
#include <linux/usb.h>
#include <linux/usb/usbnet.h>

/* requests */
#define MCS7830_RD_BMREQ	(USB_DIR_IN  | USB_TYPE_VENDOR | \
				 USB_RECIP_DEVICE)
#define MCS7830_WR_BMREQ	(USB_DIR_OUT | USB_TYPE_VENDOR | \
				 USB_RECIP_DEVICE)
#define MCS7830_RD_BREQ		0x0E
#define MCS7830_WR_BREQ		0x0D

#define MCS7830_CTRL_TIMEOUT	1000
#define MCS7830_MAX_MCAST	64

#define MCS7830_VENDOR_ID	0x9710
#define MCS7830_PRODUCT_ID	0x7830
#define MCS7730_PRODUCT_ID	0x7730

#define SITECOM_VENDOR_ID	0x0DF6
#define LN_030_PRODUCT_ID	0x0021

#define MCS7830_MII_ADVERTISE	(ADVERTISE_PAUSE_CAP | ADVERTISE_100FULL | \
				 ADVERTISE_100HALF | ADVERTISE_10FULL | \
				 ADVERTISE_10HALF | ADVERTISE_CSMA)

/* HIF_REG_XX coressponding index value */
enum {
	HIF_REG_MULTICAST_HASH			= 0x00,
	HIF_REG_PACKET_GAP1			= 0x08,
	HIF_REG_PACKET_GAP2			= 0x09,
	HIF_REG_PHY_DATA			= 0x0a,
	HIF_REG_PHY_CMD1			= 0x0c,
	   HIF_REG_PHY_CMD1_READ		= 0x40,
	   HIF_REG_PHY_CMD1_WRITE		= 0x20,
	   HIF_REG_PHY_CMD1_PHYADDR		= 0x01,
	HIF_REG_PHY_CMD2			= 0x0d,
	   HIF_REG_PHY_CMD2_PEND_FLAG_BIT	= 0x80,
	   HIF_REG_PHY_CMD2_READY_FLAG_BIT	= 0x40,
	HIF_REG_CONFIG				= 0x0e,
	   HIF_REG_CONFIG_CFG			= 0x80,
	   HIF_REG_CONFIG_SPEED100		= 0x40,
	   HIF_REG_CONFIG_FULLDUPLEX_ENABLE	= 0x20,
	   HIF_REG_CONFIG_RXENABLE		= 0x10,
	   HIF_REG_CONFIG_TXENABLE		= 0x08,
	   HIF_REG_CONFIG_SLEEPMODE		= 0x04,
	   HIF_REG_CONFIG_ALLMULTICAST		= 0x02,
	   HIF_REG_CONFIG_PROMISCIOUS		= 0x01,
	HIF_REG_ETHERNET_ADDR			= 0x0f,
	HIF_REG_22				= 0x15,
	HIF_REG_PAUSE_THRESHOLD			= 0x16,
	   HIF_REG_PAUSE_THRESHOLD_DEFAULT	= 0,
};

/* Trailing status byte in Ethernet Rx frame */
enum {
	MCS7830_RX_SHORT_FRAME		= 0x01, /* < 64 bytes */
	MCS7830_RX_LENGTH_ERROR		= 0x02, /* framelen != Ethernet length field */
	MCS7830_RX_ALIGNMENT_ERROR	= 0x04, /* non-even number of nibbles */
	MCS7830_RX_CRC_ERROR		= 0x08,
	MCS7830_RX_LARGE_FRAME		= 0x10, /* > 1518 bytes */
	MCS7830_RX_FRAME_CORRECT	= 0x20, /* frame is correct */
	/* [7:6] reserved */
};

struct mcs7830_data {
	u8 multi_filter[8];
	u8 config;
};

static const char driver_name[] = "MOSCHIP usb-ethernet driver";

static int mcs7830_get_reg(struct usbnet *dev, u16 index, u16 size, void *data)
{
	struct usb_device *xdev = dev->udev;
	int ret;
	void *buffer;

	buffer = kmalloc(size, GFP_NOIO);
	if (buffer == NULL)
		return -ENOMEM;

	ret = usb_control_msg(xdev, usb_rcvctrlpipe(xdev, 0), MCS7830_RD_BREQ,
			      MCS7830_RD_BMREQ, 0x0000, index, buffer,
			      size, MCS7830_CTRL_TIMEOUT);
	memcpy(data, buffer, size);
	kfree(buffer);

	return ret;
}

static int mcs7830_set_reg(struct usbnet *dev, u16 index, u16 size, void *data)
{
	struct usb_device *xdev = dev->udev;
	int ret;
	void *buffer;

	buffer = kmalloc(size, GFP_NOIO);
	if (buffer == NULL)
		return -ENOMEM;

	memcpy(buffer, data, size);

	ret = usb_control_msg(xdev, usb_sndctrlpipe(xdev, 0), MCS7830_WR_BREQ,
			      MCS7830_WR_BMREQ, 0x0000, index, buffer,
			      size, MCS7830_CTRL_TIMEOUT);
	kfree(buffer);
	return ret;
}

static void mcs7830_async_cmd_callback(struct urb *urb)
{
	struct usb_ctrlrequest *req = (struct usb_ctrlrequest *)urb->context;
	int status = urb->status;

	if (status < 0)
		printk(KERN_DEBUG "%s() failed with %d\n",
		       __func__, status);

	kfree(req);
	usb_free_urb(urb);
}

static void mcs7830_set_reg_async(struct usbnet *dev, u16 index, u16 size, void *data)
{
	struct usb_ctrlrequest *req;
	int ret;
	struct urb *urb;

	urb = usb_alloc_urb(0, GFP_ATOMIC);
	if (!urb) {
		dev_dbg(&dev->udev->dev,
			"Error allocating URB in write_cmd_async!\n");
		return;
	}

	req = kmalloc(sizeof *req, GFP_ATOMIC);
	if (!req) {
		dev_err(&dev->udev->dev,
			"Failed to allocate memory for control request\n");
		goto out;
	}
	req->bRequestType = MCS7830_WR_BMREQ;
	req->bRequest = MCS7830_WR_BREQ;
	req->wValue = 0;
	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,
			     mcs7830_async_cmd_callback, req);

	ret = usb_submit_urb(urb, GFP_ATOMIC);
	if (ret < 0) {
		dev_err(&dev->udev->dev,
			"Error submitting the control message: ret=%d\n", ret);
		goto out;
	}
	return;
out:
	kfree(req);
	usb_free_urb(urb);
}

static int mcs7830_get_address(struct usbnet *dev)
{
	int ret;
	ret = mcs7830_get_reg(dev, HIF_REG_ETHERNET_ADDR, ETH_ALEN,
				   dev->net->dev_addr);
	if (ret < 0)
		return ret;
	return 0;
}

static int mcs7830_read_phy(struct usbnet *dev, u8 index)
{
	int ret;
	int i;
	__le16 val;

	u8 cmd[2] = {
		HIF_REG_PHY_CMD1_READ | HIF_REG_PHY_CMD1_PHYADDR,
		HIF_REG_PHY_CMD2_PEND_FLAG_BIT | index,
	};

	mutex_lock(&dev->phy_mutex);
	/* write the MII command */
	ret = mcs7830_set_reg(dev, HIF_REG_PHY_CMD1, 2, cmd);
	if (ret < 0)
		goto out;

	/* wait for the data to become valid, should be within < 1ms */
	for (i = 0; i < 10; i++) {
		ret = mcs7830_get_reg(dev, HIF_REG_PHY_CMD1, 2, cmd);
		if ((ret < 0) || (cmd[1] & HIF_REG_PHY_CMD2_READY_FLAG_BIT))
			break;
		ret = -EIO;
		msleep(1);
	}
	if (ret < 0)
		goto out;

	/* read actual register contents */
	ret = mcs7830_get_reg(dev, HIF_REG_PHY_DATA, 2, &val);
	if (ret < 0)
		goto out;
	ret = le16_to_cpu(val);
	dev_dbg(&dev->udev->dev, "read PHY reg %02x: %04x (%d tries)\n",
		index, val, i);
out:
	mutex_unlock(&dev->phy_mutex);
	return ret;
}

static int mcs7830_write_phy(struct usbnet *dev, u8 index, u16 val)
{
	int ret;
	int i;
	__le16 le_val;

	u8 cmd[2] = {
		HIF_REG_PHY_CMD1_WRITE | HIF_REG_PHY_CMD1_PHYADDR,
		HIF_REG_PHY_CMD2_PEND_FLAG_BIT | (index & 0x1F),
	};

	mutex_lock(&dev->phy_mutex);

	/* write the new register contents */
	le_val = cpu_to_le16(val);
	ret = mcs7830_set_reg(dev, HIF_REG_PHY_DATA, 2, &le_val);
	if (ret < 0)
		goto out;

	/* write the MII command */
	ret = mcs7830_set_reg(dev, HIF_REG_PHY_CMD1, 2, cmd);
	if (ret < 0)
		goto out;

	/* wait for the command to be accepted by the PHY */
	for (i = 0; i < 10; i++) {
		ret = mcs7830_get_reg(dev, HIF_REG_PHY_CMD1, 2, cmd);
		if ((ret < 0) || (cmd[1] & HIF_REG_PHY_CMD2_READY_FLAG_BIT))
			break;
		ret = -EIO;
		msleep(1);
	}
	if (ret < 0)
		goto out;

	ret = 0;
	dev_dbg(&dev->udev->dev, "write PHY reg %02x: %04x (%d tries)\n",
		index, val, i);
out:
	mutex_unlock(&dev->phy_mutex);
	return ret;
}

/*
 * This algorithm comes from the original mcs7830 version 1.4 driver,
 * not sure if it is needed.
 */
static int mcs7830_set_autoneg(struct usbnet *dev, int ptrUserPhyMode)
{
	int ret;
	/* Enable all media types */
	ret = mcs7830_write_phy(dev, MII_ADVERTISE, MCS7830_MII_ADVERTISE);

	/* First reset BMCR */
	if (!ret)
		ret = mcs7830_write_phy(dev, MII_BMCR, 0x0000);
	/* Enable Auto Neg */
	if (!ret)
		ret = mcs7830_write_phy(dev, MII_BMCR, BMCR_ANENABLE);
	/* Restart Auto Neg (Keep the Enable Auto Neg Bit Set) */
	if (!ret)
		ret = mcs7830_write_phy(dev, MII_BMCR,
				BMCR_ANENABLE | BMCR_ANRESTART	);
	return ret < 0 ? : 0;
}


/*
 * if we can read register 22, the chip revision is C or higher
 */
static int mcs7830_get_rev(struct usbnet *dev)
{
	u8 dummy[2];
	int ret;
	ret = mcs7830_get_reg(dev, HIF_REG_22, 2, dummy);
	if (ret > 0)
		return 2; /* Rev C or later */
	return 1; /* earlier revision */
}

/*
 * On rev. C we need to set the pause threshold
 */
static void mcs7830_rev_C_fixup(struct usbnet *dev)
{
	u8 pause_threshold = HIF_REG_PAUSE_THRESHOLD_DEFAULT;
	int retry;

	for (retry = 0; retry < 2; retry++) {
		if (mcs7830_get_rev(dev) == 2) {
			dev_info(&dev->udev->dev, "applying rev.C fixup\n");
			mcs7830_set_reg(dev, HIF_REG_PAUSE_THRESHOLD,
					1, &pause_threshold);
		}
		msleep(1);
	}
}

static int mcs7830_init_dev(struct usbnet *dev)
{
	int ret;
	int retry;

	/* Read MAC address from EEPROM */
	ret = -EINVAL;
	for (retry = 0; retry < 5 && ret; retry++)
		ret = mcs7830_get_address(dev);
	if (ret) {
		dev_warn(&dev->udev->dev, "Cannot read MAC address\n");
		goto out;
	}

	/* Set up PHY */
	ret = mcs7830_set_autoneg(dev, 0);
	if (ret) {
		dev_info(&dev->udev->dev, "Cannot set autoneg\n");
		goto out;
	}

	mcs7830_rev_C_fixup(dev);
	ret = 0;
out:
	return ret;
}

static int mcs7830_mdio_read(struct net_device *netdev, int phy_id,
			     int location)
{
	struct usbnet *dev = netdev_priv(netdev);
	return mcs7830_read_phy(dev, location);
}

static void mcs7830_mdio_write(struct net_device *netdev, int phy_id,
				int location, int val)
{
	struct usbnet *dev = netdev_priv(netdev);
	mcs7830_write_phy(dev, location, val);
}

static int mcs7830_ioctl(struct net_device *net, struct ifreq *rq, int cmd)
{
	struct usbnet *dev = netdev_priv(net);
	return generic_mii_ioctl(&dev->mii, if_mii(rq), cmd, NULL);
}

/* credits go to asix_set_multicast */
static void mcs7830_set_multicast(struct net_device *net)
{
	struct usbnet *dev = netdev_priv(net);
	struct mcs7830_data *data = (struct mcs7830_data *)&dev->data;

	data->config = HIF_REG_CONFIG_TXENABLE;

	/* this should not be needed, but it doesn't work otherwise */
	data->config |= HIF_REG_CONFIG_ALLMULTICAST;

	if (net->flags & IFF_PROMISC) {
		data->config |= HIF_REG_CONFIG_PROMISCIOUS;
	} else if (net->flags & IFF_ALLMULTI ||
		   net->mc_count > MCS7830_MAX_MCAST) {
		data->config |= HIF_REG_CONFIG_ALLMULTICAST;
	} 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, sizeof data->multi_filter);

		/* 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;
		}

		mcs7830_set_reg_async(dev, HIF_REG_MULTICAST_HASH,
				sizeof data->multi_filter,
				data->multi_filter);
	}

	mcs7830_set_reg_async(dev, HIF_REG_CONFIG, 1, &data->config);
}

static int mcs7830_get_regs_len(struct net_device *net)
{
	struct usbnet *dev = netdev_priv(net);

	switch (mcs7830_get_rev(dev)) {
	case 1:
		return 21;
	case 2:
		return 32;
	}
	return 0;
}

static void mcs7830_get_drvinfo(struct net_device *net, struct ethtool_drvinfo *drvinfo)
{
	usbnet_get_drvinfo(net, drvinfo);
	drvinfo->regdump_len = mcs7830_get_regs_len(net);
}

static void mcs7830_get_regs(struct net_device *net, struct ethtool_regs *regs, void *data)
{
	struct usbnet *dev = netdev_priv(net);

	regs->version = mcs7830_get_rev(dev);
	mcs7830_get_reg(dev, 0, regs->len, data);
}

static const struct ethtool_ops mcs7830_ethtool_ops = {
	.get_drvinfo		= mcs7830_get_drvinfo,
	.get_regs_len		= mcs7830_get_regs_len,
	.get_regs		= mcs7830_get_regs,

	/* common usbnet calls */
	.get_link		= usbnet_get_link,
	.get_msglevel		= usbnet_get_msglevel,
	.set_msglevel		= usbnet_set_msglevel,
	.get_settings		= usbnet_get_settings,
	.set_settings		= usbnet_set_settings,
	.nway_reset		= usbnet_nway_reset,
};

static int mcs7830_set_mac_address(struct net_device *netdev, void *p)
{
	int ret;
	struct usbnet *dev = netdev_priv(netdev);
	struct sockaddr *addr = p;

	if (netif_running(netdev))
		return -EBUSY;

	if (!is_valid_ether_addr(addr->sa_data))
		return -EINVAL;

	memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);

	ret = mcs7830_set_reg(dev, HIF_REG_ETHERNET_ADDR, ETH_ALEN,
			netdev->dev_addr);

	if (ret < 0)
		return ret;

	return 0;
}

static const struct net_device_ops mcs7830_netdev_ops = {
	.ndo_open		= usbnet_open,
	.ndo_stop		= usbnet_stop,
	.ndo_start_xmit		= usbnet_start_xmit,
	.ndo_tx_timeout		= usbnet_tx_timeout,
	.ndo_change_mtu		= usbnet_change_mtu,
	.ndo_validate_addr	= eth_validate_addr,
	.ndo_do_ioctl 		= mcs7830_ioctl,
	.ndo_set_multicast_list = mcs7830_set_multicast,
	.ndo_set_mac_address	 = mcs7830_set_mac_address,
};

static int mcs7830_bind(struct usbnet *dev, struct usb_interface *udev)
{
	struct net_device *net = dev->net;
	int ret;

	ret = mcs7830_init_dev(dev);
	if (ret)
		goto out;

	net->ethtool_ops = &mcs7830_ethtool_ops;
	net->netdev_ops = &mcs7830_netdev_ops;
	mcs7830_set_multicast(net);

	/* reserve space for the status byte on rx */
	dev->rx_urb_size = ETH_FRAME_LEN + 1;

	dev->mii.mdio_read = mcs7830_mdio_read;
	dev->mii.mdio_write = mcs7830_mdio_write;
	dev->mii.dev = net;
	dev->mii.phy_id_mask = 0x3f;
	dev->mii.reg_num_mask = 0x1f;
	dev->mii.phy_id = *((u8 *) net->dev_addr + 1);

	ret = usbnet_get_endpoints(dev, udev);
out:
	return ret;
}

/* The chip always appends a status bytes that we need to strip */
static int mcs7830_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
{
	u8 status;

	if (skb->len == 0) {
		dev_err(&dev->udev->dev, "unexpected empty rx frame\n");
		return 0;
	}

	skb_trim(skb, skb->len - 1);
	status = skb->data[skb->len];

	if (status != MCS7830_RX_FRAME_CORRECT) {
		dev_dbg(&dev->udev->dev, "rx fixup status %x\n", status);

		/* hmm, perhaps usbnet.c already sees a globally visible
		   frame error and increments rx_errors on its own already? */
		dev->net->stats.rx_errors++;

		if (status &	(MCS7830_RX_SHORT_FRAME
				|MCS7830_RX_LENGTH_ERROR
				|MCS7830_RX_LARGE_FRAME))
			dev->net->stats.rx_length_errors++;
		if (status & MCS7830_RX_ALIGNMENT_ERROR)
			dev->net->stats.rx_frame_errors++;
		if (status & MCS7830_RX_CRC_ERROR)
			dev->net->stats.rx_crc_errors++;
	}

	return skb->len > 0;
}

static const struct driver_info moschip_info = {
	.description	= "MOSCHIP 7830/7730 usb-NET adapter",
	.bind		= mcs7830_bind,
	.rx_fixup	= mcs7830_rx_fixup,
	.flags		= FLAG_ETHER,
	.in		= 1,
	.out		= 2,
};

static const struct driver_info sitecom_info = {
	.description    = "Sitecom LN-30 usb-NET adapter",
	.bind		= mcs7830_bind,
	.rx_fixup	= mcs7830_rx_fixup,
	.flags		= FLAG_ETHER,
	.in		= 1,
	.out		= 2,
};

static const struct usb_device_id products[] = {
	{
		USB_DEVICE(MCS7830_VENDOR_ID, MCS7830_PRODUCT_ID),
		.driver_info = (unsigned long) &moschip_info,
	},
	{
		USB_DEVICE(MCS7830_VENDOR_ID, MCS7730_PRODUCT_ID),
		.driver_info = (unsigned long) &moschip_info,
	},
	{
		USB_DEVICE(SITECOM_VENDOR_ID, LN_030_PRODUCT_ID),
		.driver_info = (unsigned long) &sitecom_info,
	},
	{},
};
MODULE_DEVICE_TABLE(usb, products);

static struct usb_driver mcs7830_driver = {
	.name = driver_name,
	.id_table = products,
	.probe = usbnet_probe,
	.disconnect = usbnet_disconnect,
	.suspend = usbnet_suspend,
	.resume = usbnet_resume,
};

static int __init mcs7830_init(void)
{
	return usb_register(&mcs7830_driver);
}
module_init(mcs7830_init);

static void __exit mcs7830_exit(void)
{
	usb_deregister(&mcs7830_driver);
}
module_exit(mcs7830_exit);

MODULE_DESCRIPTION("USB to network adapter MCS7830)");
MODULE_LICENSE("GPL");
Commit	Line	Data
2a36d708 AB	1	/*
	2	* MosChips MCS7830 based USB 2.0 Ethernet Devices
	3	*
	4	* based on usbnet.c, asix.c and the vendor provided mcs7830 driver
	5	*
76802851	6	* Copyright (C) 2010 Andreas Mohr <andi@lisas.de>
2a36d708 AB	7	* Copyright (C) 2006 Arnd Bergmann <arnd@arndb.de>
	8	* Copyright (C) 2003-2005 David Hollis <dhollis@davehollis.com>
	9	* Copyright (C) 2005 Phil Chang <pchang23@sbcglobal.net>
	10	* Copyright (c) 2002-2003 TiVo Inc.
	11	*
76802851 AM	12	* Definitions gathered from MOSCHIP, Data Sheet_7830DA.pdf (thanks!).
	13	*
	14	* TODO:
	15	* - add .reset_resume support (iface is _gone_ after resume w/ power loss)
	16	* - verify that mcs7830_get_regs() does have same output pre-/post-suspend
	17	* - support HIF_REG_CONFIG_SLEEPMODE/HIF_REG_CONFIG_TXENABLE (via autopm?)
	18	* - implement ethtool_ops get_pauseparam/set_pauseparam
	19	* via HIF_REG_PAUSE_THRESHOLD (>= revision C only!)
	20	* - implement get_eeprom/[set_eeprom]
	21	* - switch PHY on/off on ifup/ifdown (perhaps in usbnet.c, via MII)
	22	* - mcs7830_get_regs() handling is weird: for rev 2 we return 32 regs,
	23	* can access only ~ 24, remaining user buffer is uninitialized garbage
	24	* - anything else?
	25	*
	26	*
2a36d708 AB	27	* This program is free software; you can redistribute it and/or modify
	28	* it under the terms of the GNU General Public License as published by
	29	* the Free Software Foundation; either version 2 of the License, or
	30	* (at your option) any later version.
	31	*
	32	* This program is distributed in the hope that it will be useful,
	33	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	34	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	35	* GNU General Public License for more details.
	36	*
	37	* You should have received a copy of the GNU General Public License
	38	* along with this program; if not, write to the Free Software
	39	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	40	*/
	41
	42	#include <linux/crc32.h>
	43	#include <linux/etherdevice.h>
	44	#include <linux/ethtool.h>
	45	#include <linux/init.h>
	46	#include <linux/mii.h>
	47	#include <linux/module.h>
	48	#include <linux/netdevice.h>
	49	#include <linux/usb.h>
3692e94f	50	#include <linux/usb/usbnet.h>
2a36d708 AB	51
	52	/* requests */
	53	#define MCS7830_RD_BMREQ (USB_DIR_IN \| USB_TYPE_VENDOR \| \
	54	USB_RECIP_DEVICE)
	55	#define MCS7830_WR_BMREQ (USB_DIR_OUT \| USB_TYPE_VENDOR \| \
	56	USB_RECIP_DEVICE)
	57	#define MCS7830_RD_BREQ 0x0E
	58	#define MCS7830_WR_BREQ 0x0D
	59
	60	#define MCS7830_CTRL_TIMEOUT 1000
	61	#define MCS7830_MAX_MCAST 64
	62
	63	#define MCS7830_VENDOR_ID 0x9710
	64	#define MCS7830_PRODUCT_ID 0x7830
8382cc1c AB	65	#define MCS7730_PRODUCT_ID 0x7730
	66
	67	#define SITECOM_VENDOR_ID 0x0DF6
	68	#define LN_030_PRODUCT_ID 0x0021
2a36d708 AB	69
	70	#define MCS7830_MII_ADVERTISE (ADVERTISE_PAUSE_CAP \| ADVERTISE_100FULL \| \
	71	ADVERTISE_100HALF \| ADVERTISE_10FULL \| \
	72	ADVERTISE_10HALF \| ADVERTISE_CSMA)
	73
	74	/* HIF_REG_XX coressponding index value */
	75	enum {
	76	HIF_REG_MULTICAST_HASH = 0x00,
	77	HIF_REG_PACKET_GAP1 = 0x08,
	78	HIF_REG_PACKET_GAP2 = 0x09,
	79	HIF_REG_PHY_DATA = 0x0a,
	80	HIF_REG_PHY_CMD1 = 0x0c,
	81	HIF_REG_PHY_CMD1_READ = 0x40,
	82	HIF_REG_PHY_CMD1_WRITE = 0x20,
	83	HIF_REG_PHY_CMD1_PHYADDR = 0x01,
	84	HIF_REG_PHY_CMD2 = 0x0d,
	85	HIF_REG_PHY_CMD2_PEND_FLAG_BIT = 0x80,
	86	HIF_REG_PHY_CMD2_READY_FLAG_BIT = 0x40,
	87	HIF_REG_CONFIG = 0x0e,
	88	HIF_REG_CONFIG_CFG = 0x80,
	89	HIF_REG_CONFIG_SPEED100 = 0x40,
	90	HIF_REG_CONFIG_FULLDUPLEX_ENABLE = 0x20,
	91	HIF_REG_CONFIG_RXENABLE = 0x10,
	92	HIF_REG_CONFIG_TXENABLE = 0x08,
	93	HIF_REG_CONFIG_SLEEPMODE = 0x04,
	94	HIF_REG_CONFIG_ALLMULTICAST = 0x02,
	95	HIF_REG_CONFIG_PROMISCIOUS = 0x01,
	96	HIF_REG_ETHERNET_ADDR = 0x0f,
	97	HIF_REG_22 = 0x15,
	98	HIF_REG_PAUSE_THRESHOLD = 0x16,
	99	HIF_REG_PAUSE_THRESHOLD_DEFAULT = 0,
	100	};
	101
76802851 AM	102	/* Trailing status byte in Ethernet Rx frame */
	103	enum {
	104	MCS7830_RX_SHORT_FRAME = 0x01, /* < 64 bytes */
	105	MCS7830_RX_LENGTH_ERROR = 0x02, /* framelen != Ethernet length field */
	106	MCS7830_RX_ALIGNMENT_ERROR = 0x04, /* non-even number of nibbles */
	107	MCS7830_RX_CRC_ERROR = 0x08,
	108	MCS7830_RX_LARGE_FRAME = 0x10, /* > 1518 bytes */
	109	MCS7830_RX_FRAME_CORRECT = 0x20, /* frame is correct */
	110	/* [7:6] reserved */
	111	};
	112
2a36d708 AB	113	struct mcs7830_data {
	114	u8 multi_filter[8];
	115	u8 config;
	116	};
	117
	118	static const char driver_name[] = "MOSCHIP usb-ethernet driver";
	119
	120	static int mcs7830_get_reg(struct usbnet dev, u16 index, u16 size, void data)
	121	{
	122	struct usb_device *xdev = dev->udev;
	123	int ret;
6d317482 CE	124	void *buffer;
	125
	126	buffer = kmalloc(size, GFP_NOIO);
	127	if (buffer == NULL)
	128	return -ENOMEM;
2a36d708 AB	129
2a36d708 AB	130	ret = usb_control_msg(xdev, usb_rcvctrlpipe(xdev, 0), MCS7830_RD_BREQ,
6d317482	131	MCS7830_RD_BMREQ, 0x0000, index, buffer,
1d39da3d	132	size, MCS7830_CTRL_TIMEOUT);
6d317482 CE	133	memcpy(data, buffer, size);
	134	kfree(buffer);
	135
2a36d708 AB	136	return ret;
	137	}
	138
	139	static int mcs7830_set_reg(struct usbnet dev, u16 index, u16 size, void data)
	140	{
	141	struct usb_device *xdev = dev->udev;
	142	int ret;
6d317482 CE	143	void *buffer;
	144
	145	buffer = kmalloc(size, GFP_NOIO);
	146	if (buffer == NULL)
	147	return -ENOMEM;
	148
	149	memcpy(buffer, data, size);
2a36d708 AB	150
2a36d708 AB	151	ret = usb_control_msg(xdev, usb_sndctrlpipe(xdev, 0), MCS7830_WR_BREQ,
6d317482	152	MCS7830_WR_BMREQ, 0x0000, index, buffer,
1d39da3d	153	size, MCS7830_CTRL_TIMEOUT);
6d317482	154	kfree(buffer);
2a36d708 AB	155	return ret;
	156	}
	157
	158	static void mcs7830_async_cmd_callback(struct urb *urb)
	159	{
	160	struct usb_ctrlrequest req = (struct usb_ctrlrequest )urb->context;
c94cb314	161	int status = urb->status;
2a36d708	162
c94cb314	163	if (status < 0)
898eb71c	164	printk(KERN_DEBUG "%s() failed with %d\n",
c94cb314	165	__func__, status);
2a36d708 AB	166
	167	kfree(req);
	168	usb_free_urb(urb);
	169	}
	170
	171	static void mcs7830_set_reg_async(struct usbnet dev, u16 index, u16 size, void data)
	172	{
	173	struct usb_ctrlrequest *req;
	174	int ret;
	175	struct urb *urb;
	176
	177	urb = usb_alloc_urb(0, GFP_ATOMIC);
	178	if (!urb) {
898eb71c JP	179	dev_dbg(&dev->udev->dev,
898eb71c JP	180	"Error allocating URB in write_cmd_async!\n");
2a36d708 AB	181	return;
	182	}
	183
	184	req = kmalloc(sizeof *req, GFP_ATOMIC);
	185	if (!req) {
898eb71c JP	186	dev_err(&dev->udev->dev,
898eb71c JP	187	"Failed to allocate memory for control request\n");
2a36d708 AB	188	goto out;
	189	}
	190	req->bRequestType = MCS7830_WR_BMREQ;
	191	req->bRequest = MCS7830_WR_BREQ;
	192	req->wValue = 0;
	193	req->wIndex = cpu_to_le16(index);
	194	req->wLength = cpu_to_le16(size);
	195
	196	usb_fill_control_urb(urb, dev->udev,
	197	usb_sndctrlpipe(dev->udev, 0),
	198	(void *)req, data, size,
	199	mcs7830_async_cmd_callback, req);
	200
	201	ret = usb_submit_urb(urb, GFP_ATOMIC);
	202	if (ret < 0) {
898eb71c JP	203	dev_err(&dev->udev->dev,
898eb71c JP	204	"Error submitting the control message: ret=%d\n", ret);
2a36d708 AB	205	goto out;
	206	}
	207	return;
	208	out:
	209	kfree(req);
	210	usb_free_urb(urb);
	211	}
	212
	213	static int mcs7830_get_address(struct usbnet *dev)
	214	{
	215	int ret;
	216	ret = mcs7830_get_reg(dev, HIF_REG_ETHERNET_ADDR, ETH_ALEN,
	217	dev->net->dev_addr);
	218	if (ret < 0)
	219	return ret;
	220	return 0;
	221	}
	222
	223	static int mcs7830_read_phy(struct usbnet *dev, u8 index)
	224	{
	225	int ret;
	226	int i;
	227	__le16 val;
	228
	229	u8 cmd[2] = {
	230	HIF_REG_PHY_CMD1_READ \| HIF_REG_PHY_CMD1_PHYADDR,
	231	HIF_REG_PHY_CMD2_PEND_FLAG_BIT \| index,
	232	};
	233
a9fc6338	234	mutex_lock(&dev->phy_mutex);
2a36d708 AB	235	/* write the MII command */
	236	ret = mcs7830_set_reg(dev, HIF_REG_PHY_CMD1, 2, cmd);
	237	if (ret < 0)
	238	goto out;
	239
	240	/* wait for the data to become valid, should be within < 1ms */
	241	for (i = 0; i < 10; i++) {
	242	ret = mcs7830_get_reg(dev, HIF_REG_PHY_CMD1, 2, cmd);
	243	if ((ret < 0) \|\| (cmd[1] & HIF_REG_PHY_CMD2_READY_FLAG_BIT))
	244	break;
	245	ret = -EIO;
	246	msleep(1);
	247	}
	248	if (ret < 0)
	249	goto out;
	250
	251	/* read actual register contents */
	252	ret = mcs7830_get_reg(dev, HIF_REG_PHY_DATA, 2, &val);
	253	if (ret < 0)
	254	goto out;
	255	ret = le16_to_cpu(val);
	256	dev_dbg(&dev->udev->dev, "read PHY reg %02x: %04x (%d tries)\n",
	257	index, val, i);
	258	out:
a9fc6338	259	mutex_unlock(&dev->phy_mutex);
2a36d708 AB	260	return ret;
	261	}
	262
	263	static int mcs7830_write_phy(struct usbnet *dev, u8 index, u16 val)
	264	{
	265	int ret;
	266	int i;
	267	__le16 le_val;
	268
	269	u8 cmd[2] = {
	270	HIF_REG_PHY_CMD1_WRITE \| HIF_REG_PHY_CMD1_PHYADDR,
	271	HIF_REG_PHY_CMD2_PEND_FLAG_BIT \| (index & 0x1F),
	272	};
	273
a9fc6338 AB	274	mutex_lock(&dev->phy_mutex);
a9fc6338 AB	275
2a36d708 AB	276	/* write the new register contents */
	277	le_val = cpu_to_le16(val);
	278	ret = mcs7830_set_reg(dev, HIF_REG_PHY_DATA, 2, &le_val);
	279	if (ret < 0)
	280	goto out;
	281
	282	/* write the MII command */
	283	ret = mcs7830_set_reg(dev, HIF_REG_PHY_CMD1, 2, cmd);
	284	if (ret < 0)
	285	goto out;
	286
	287	/* wait for the command to be accepted by the PHY */
	288	for (i = 0; i < 10; i++) {
	289	ret = mcs7830_get_reg(dev, HIF_REG_PHY_CMD1, 2, cmd);
	290	if ((ret < 0) \|\| (cmd[1] & HIF_REG_PHY_CMD2_READY_FLAG_BIT))
	291	break;
	292	ret = -EIO;
	293	msleep(1);
	294	}
	295	if (ret < 0)
	296	goto out;
	297
	298	ret = 0;
	299	dev_dbg(&dev->udev->dev, "write PHY reg %02x: %04x (%d tries)\n",
	300	index, val, i);
	301	out:
a9fc6338	302	mutex_unlock(&dev->phy_mutex);
2a36d708 AB	303	return ret;
	304	}
	305
	306	/*
	307	* This algorithm comes from the original mcs7830 version 1.4 driver,
	308	* not sure if it is needed.
	309	*/
	310	static int mcs7830_set_autoneg(struct usbnet *dev, int ptrUserPhyMode)
	311	{
	312	int ret;
	313	/* Enable all media types */
	314	ret = mcs7830_write_phy(dev, MII_ADVERTISE, MCS7830_MII_ADVERTISE);
	315
	316	/* First reset BMCR */
	317	if (!ret)
	318	ret = mcs7830_write_phy(dev, MII_BMCR, 0x0000);
	319	/* Enable Auto Neg */
	320	if (!ret)
	321	ret = mcs7830_write_phy(dev, MII_BMCR, BMCR_ANENABLE);
	322	/* Restart Auto Neg (Keep the Enable Auto Neg Bit Set) */
	323	if (!ret)
	324	ret = mcs7830_write_phy(dev, MII_BMCR,
	325	BMCR_ANENABLE \| BMCR_ANRESTART );
	326	return ret < 0 ? : 0;
	327	}
	328
	329
	330	/*
	331	* if we can read register 22, the chip revision is C or higher
	332	*/
	333	static int mcs7830_get_rev(struct usbnet *dev)
	334	{
	335	u8 dummy[2];
	336	int ret;
	337	ret = mcs7830_get_reg(dev, HIF_REG_22, 2, dummy);
	338	if (ret > 0)
	339	return 2; /* Rev C or later */
	340	return 1; /* earlier revision */
	341	}
	342
	343	/*
	344	* On rev. C we need to set the pause threshold
	345	*/
	346	static void mcs7830_rev_C_fixup(struct usbnet *dev)
	347	{
	348	u8 pause_threshold = HIF_REG_PAUSE_THRESHOLD_DEFAULT;
	349	int retry;
	350
	351	for (retry = 0; retry < 2; retry++) {
	352	if (mcs7830_get_rev(dev) == 2) {
	353	dev_info(&dev->udev->dev, "applying rev.C fixup\n");
	354	mcs7830_set_reg(dev, HIF_REG_PAUSE_THRESHOLD,
	355	1, &pause_threshold);
	356	}
	357	msleep(1);
	358	}
	359	}
	360
	361	static int mcs7830_init_dev(struct usbnet *dev)
	362	{
	363	int ret;
	364	int retry;
	365
	366	/* Read MAC address from EEPROM */
367	ret = -EINVAL;
368	for (retry = 0; retry < 5 && ret; retry++)
369	ret = mcs7830_get_address(dev);
370	if (ret) {
371	dev_warn(&dev->udev->dev, "Cannot read MAC address\n");
372	goto out;
373	}
374
375	/* Set up PHY */
376	ret = mcs7830_set_autoneg(dev, 0);
377	if (ret) {
378	dev_info(&dev->udev->dev, "Cannot set autoneg\n");
379	goto out;
380	}
381
382	mcs7830_rev_C_fixup(dev);
383	ret = 0;
384	out:
385	return ret;
386	}
387
388	static int mcs7830_mdio_read(struct net_device *netdev, int phy_id,
389	int location)
390	{
8f15ea42	391	struct usbnet *dev = netdev_priv(netdev);
2a36d708 AB	392	return mcs7830_read_phy(dev, location);
	393	}
	394
	395	static void mcs7830_mdio_write(struct net_device *netdev, int phy_id,
	396	int location, int val)
	397	{
8f15ea42	398	struct usbnet *dev = netdev_priv(netdev);
2a36d708 AB	399	mcs7830_write_phy(dev, location, val);
	400	}
	401
	402	static int mcs7830_ioctl(struct net_device net, struct ifreq rq, int cmd)
	403	{
	404	struct usbnet *dev = netdev_priv(net);
	405	return generic_mii_ioctl(&dev->mii, if_mii(rq), cmd, NULL);
	406	}
	407
	408	/* credits go to asix_set_multicast */
	409	static void mcs7830_set_multicast(struct net_device *net)
	410	{
	411	struct usbnet *dev = netdev_priv(net);
	412	struct mcs7830_data data = (struct mcs7830_data )&dev->data;
	413
	414	data->config = HIF_REG_CONFIG_TXENABLE;
	415
	416	/* this should not be needed, but it doesn't work otherwise */
	417	data->config \|= HIF_REG_CONFIG_ALLMULTICAST;
	418
	419	if (net->flags & IFF_PROMISC) {
	420	data->config \|= HIF_REG_CONFIG_PROMISCIOUS;
8e95a202 JP	421	} else if (net->flags & IFF_ALLMULTI \|\|
8e95a202 JP	422	net->mc_count > MCS7830_MAX_MCAST) {
2a36d708 AB	423	data->config \|= HIF_REG_CONFIG_ALLMULTICAST;
	424	} else if (net->mc_count == 0) {
	425	/* just broadcast and directed */
	426	} else {
	427	/* We use the 20 byte dev->data
	428	* for our 8 byte filter buffer
	429	* to avoid allocating memory that
	430	* is tricky to free later */
	431	struct dev_mc_list *mc_list = net->mc_list;
	432	u32 crc_bits;
	433	int i;
	434
	435	memset(data->multi_filter, 0, sizeof data->multi_filter);
	436
	437	/* Build the multicast hash filter. */
	438	for (i = 0; i < net->mc_count; i++) {
	439	crc_bits = ether_crc(ETH_ALEN, mc_list->dmi_addr) >> 26;
	440	data->multi_filter[crc_bits >> 3] \|= 1 << (crc_bits & 7);
	441	mc_list = mc_list->next;
	442	}
	443
	444	mcs7830_set_reg_async(dev, HIF_REG_MULTICAST_HASH,
	445	sizeof data->multi_filter,
	446	data->multi_filter);
	447	}
	448
	449	mcs7830_set_reg_async(dev, HIF_REG_CONFIG, 1, &data->config);
	450	}
	451
	452	static int mcs7830_get_regs_len(struct net_device *net)
	453	{
	454	struct usbnet *dev = netdev_priv(net);
	455
	456	switch (mcs7830_get_rev(dev)) {
	457	case 1:
	458	return 21;
	459	case 2:
	460	return 32;
	461	}
	462	return 0;
	463	}
	464
	465	static void mcs7830_get_drvinfo(struct net_device net, struct ethtool_drvinfo drvinfo)
	466	{
	467	usbnet_get_drvinfo(net, drvinfo);
	468	drvinfo->regdump_len = mcs7830_get_regs_len(net);
	469	}
	470
	471	static void mcs7830_get_regs(struct net_device net, struct ethtool_regs regs, void *data)
	472	{
	473	struct usbnet *dev = netdev_priv(net);
	474
	475	regs->version = mcs7830_get_rev(dev);
	476	mcs7830_get_reg(dev, 0, regs->len, data);
	477	}
	478
0fc0b732	479	static const struct ethtool_ops mcs7830_ethtool_ops = {
2a36d708 AB	480	.get_drvinfo = mcs7830_get_drvinfo,
	481	.get_regs_len = mcs7830_get_regs_len,
	482	.get_regs = mcs7830_get_regs,
	483
	484	/* common usbnet calls */
c41286fd	485	.get_link = usbnet_get_link,
2a36d708 AB	486	.get_msglevel = usbnet_get_msglevel,
2a36d708 AB	487	.set_msglevel = usbnet_set_msglevel,
c41286fd AB	488	.get_settings = usbnet_get_settings,
	489	.set_settings = usbnet_set_settings,
	490	.nway_reset = usbnet_nway_reset,
2a36d708 AB	491	};
2a36d708 AB	492
10254331 OM	493	static int mcs7830_set_mac_address(struct net_device netdev, void p)
	494	{
	495	int ret;
	496	struct usbnet *dev = netdev_priv(netdev);
	497	struct sockaddr *addr = p;
	498
	499	if (netif_running(netdev))
	500	return -EBUSY;
	501
	502	if (!is_valid_ether_addr(addr->sa_data))
	503	return -EINVAL;
	504
	505	memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
	506
	507	ret = mcs7830_set_reg(dev, HIF_REG_ETHERNET_ADDR, ETH_ALEN,
	508	netdev->dev_addr);
	509
	510	if (ret < 0)
	511	return ret;
	512
	513	return 0;
	514	}
	515
e12c4f83 SH	516	static const struct net_device_ops mcs7830_netdev_ops = {
	517	.ndo_open = usbnet_open,
	518	.ndo_stop = usbnet_stop,
	519	.ndo_start_xmit = usbnet_start_xmit,
	520	.ndo_tx_timeout = usbnet_tx_timeout,
	521	.ndo_change_mtu = usbnet_change_mtu,
	522	.ndo_validate_addr = eth_validate_addr,
	523	.ndo_do_ioctl = mcs7830_ioctl,
	524	.ndo_set_multicast_list = mcs7830_set_multicast,
	525	.ndo_set_mac_address = mcs7830_set_mac_address,
	526	};
	527
2a36d708 AB	528	static int mcs7830_bind(struct usbnet dev, struct usb_interface udev)
	529	{
	530	struct net_device *net = dev->net;
	531	int ret;
	532
	533	ret = mcs7830_init_dev(dev);
	534	if (ret)
	535	goto out;
	536
2a36d708	537	net->ethtool_ops = &mcs7830_ethtool_ops;
e12c4f83	538	net->netdev_ops = &mcs7830_netdev_ops;
2a36d708 AB	539	mcs7830_set_multicast(net);
	540
	541	/* reserve space for the status byte on rx */
	542	dev->rx_urb_size = ETH_FRAME_LEN + 1;
	543
	544	dev->mii.mdio_read = mcs7830_mdio_read;
	545	dev->mii.mdio_write = mcs7830_mdio_write;
	546	dev->mii.dev = net;
	547	dev->mii.phy_id_mask = 0x3f;
	548	dev->mii.reg_num_mask = 0x1f;
	549	dev->mii.phy_id = ((u8 ) net->dev_addr + 1);
	550
	551	ret = usbnet_get_endpoints(dev, udev);
	552	out:
	553	return ret;
	554	}
	555
	556	/* The chip always appends a status bytes that we need to strip */
	557	static int mcs7830_rx_fixup(struct usbnet dev, struct sk_buff skb)
	558	{
	559	u8 status;
	560
	561	if (skb->len == 0) {
	562	dev_err(&dev->udev->dev, "unexpected empty rx frame\n");
	563	return 0;
	564	}
	565
	566	skb_trim(skb, skb->len - 1);
	567	status = skb->data[skb->len];
	568
76802851	569	if (status != MCS7830_RX_FRAME_CORRECT) {
2a36d708 AB	570	dev_dbg(&dev->udev->dev, "rx fixup status %x\n", status);
2a36d708 AB	571
76802851 AM	572	/* hmm, perhaps usbnet.c already sees a globally visible
	573	frame error and increments rx_errors on its own already? */
	574	dev->net->stats.rx_errors++;
	575
	576	if (status & (MCS7830_RX_SHORT_FRAME
	577	\|MCS7830_RX_LENGTH_ERROR
	578	\|MCS7830_RX_LARGE_FRAME))
	579	dev->net->stats.rx_length_errors++;
	580	if (status & MCS7830_RX_ALIGNMENT_ERROR)
	581	dev->net->stats.rx_frame_errors++;
	582	if (status & MCS7830_RX_CRC_ERROR)
	583	dev->net->stats.rx_crc_errors++;
	584	}
	585
2a36d708 AB	586	return skb->len > 0;
	587	}
	588
	589	static const struct driver_info moschip_info = {
8382cc1c AB	590	.description = "MOSCHIP 7830/7730 usb-NET adapter",
	591	.bind = mcs7830_bind,
	592	.rx_fixup = mcs7830_rx_fixup,
	593	.flags = FLAG_ETHER,
	594	.in = 1,
	595	.out = 2,
	596	};
	597
	598	static const struct driver_info sitecom_info = {
	599	.description = "Sitecom LN-30 usb-NET adapter",
2a36d708 AB	600	.bind = mcs7830_bind,
	601	.rx_fixup = mcs7830_rx_fixup,
	602	.flags = FLAG_ETHER,
	603	.in = 1,
	604	.out = 2,
	605	};
	606
	607	static const struct usb_device_id products[] = {
	608	{
	609	USB_DEVICE(MCS7830_VENDOR_ID, MCS7830_PRODUCT_ID),
	610	.driver_info = (unsigned long) &moschip_info,
	611	},
8382cc1c AB	612	{
	613	USB_DEVICE(MCS7830_VENDOR_ID, MCS7730_PRODUCT_ID),
	614	.driver_info = (unsigned long) &moschip_info,
	615	},
	616	{
	617	USB_DEVICE(SITECOM_VENDOR_ID, LN_030_PRODUCT_ID),
	618	.driver_info = (unsigned long) &sitecom_info,
	619	},
2a36d708 AB	620	{},
	621	};
	622	MODULE_DEVICE_TABLE(usb, products);
	623
	624	static struct usb_driver mcs7830_driver = {
	625	.name = driver_name,
	626	.id_table = products,
	627	.probe = usbnet_probe,
	628	.disconnect = usbnet_disconnect,
	629	.suspend = usbnet_suspend,
	630	.resume = usbnet_resume,
	631	};
	632
	633	static int __init mcs7830_init(void)
	634	{
	635	return usb_register(&mcs7830_driver);
	636	}
	637	module_init(mcs7830_init);
	638
	639	static void __exit mcs7830_exit(void)
	640	{
	641	usb_deregister(&mcs7830_driver);
	642	}
	643	module_exit(mcs7830_exit);
	644
	645	MODULE_DESCRIPTION("USB to network adapter MCS7830)");
	646	MODULE_LICENSE("GPL");