linux/drivers/net/usb/mcs7830.c
<<
>>
Prefs
   1/*
   2 * MOSCHIP MCS7830 based (7730/7830/7832) USB 2.0 Ethernet Devices
   3 *
   4 * based on usbnet.c, asix.c and the vendor provided mcs7830 driver
   5 *
   6 * Copyright (C) 2010 Andreas Mohr <andi@lisas.de>
   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 *
  12 * Definitions gathered from MOSCHIP, Data Sheet_7830DA.pdf (thanks!).
  13 *
  14 * 2010-12-19: add 7832 USB PID ("functionality same as MCS7830"),
  15 *             per active notification by manufacturer
  16 *
  17 * TODO:
  18 * - support HIF_REG_CONFIG_SLEEPMODE/HIF_REG_CONFIG_TXENABLE (via autopm?)
  19 * - implement ethtool_ops get_pauseparam/set_pauseparam
  20 *   via HIF_REG_PAUSE_THRESHOLD (>= revision C only!)
  21 * - implement get_eeprom/[set_eeprom]
  22 * - switch PHY on/off on ifup/ifdown (perhaps in usbnet.c, via MII)
  23 * - mcs7830_get_regs() handling is weird: for rev 2 we return 32 regs,
  24 *   can access only ~ 24, remaining user buffer is uninitialized garbage
  25 * - anything else?
  26 *
  27 *
  28 * This program is free software; you can redistribute it and/or modify
  29 * it under the terms of the GNU General Public License as published by
  30 * the Free Software Foundation; either version 2 of the License, or
  31 * (at your option) any later version.
  32 *
  33 * This program is distributed in the hope that it will be useful,
  34 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  35 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  36 * GNU General Public License for more details.
  37 *
  38 * You should have received a copy of the GNU General Public License
  39 * along with this program; if not, see <http://www.gnu.org/licenses/>.
  40 */
  41
  42#include <linux/crc32.h>
  43#include <linux/etherdevice.h>
  44#include <linux/ethtool.h>
  45#include <linux/mii.h>
  46#include <linux/module.h>
  47#include <linux/netdevice.h>
  48#include <linux/slab.h>
  49#include <linux/usb.h>
  50#include <linux/usb/usbnet.h>
  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 MCS7832_PRODUCT_ID      0x7832
  65#define MCS7830_PRODUCT_ID      0x7830
  66#define MCS7730_PRODUCT_ID      0x7730
  67
  68#define SITECOM_VENDOR_ID       0x0DF6
  69#define LN_030_PRODUCT_ID       0x0021
  70
  71#define MCS7830_MII_ADVERTISE   (ADVERTISE_PAUSE_CAP | ADVERTISE_100FULL | \
  72                                 ADVERTISE_100HALF | ADVERTISE_10FULL | \
  73                                 ADVERTISE_10HALF | ADVERTISE_CSMA)
  74
  75/* HIF_REG_XX corresponding index value */
  76enum {
  77        HIF_REG_MULTICAST_HASH                  = 0x00,
  78        HIF_REG_PACKET_GAP1                     = 0x08,
  79        HIF_REG_PACKET_GAP2                     = 0x09,
  80        HIF_REG_PHY_DATA                        = 0x0a,
  81        HIF_REG_PHY_CMD1                        = 0x0c,
  82           HIF_REG_PHY_CMD1_READ                = 0x40,
  83           HIF_REG_PHY_CMD1_WRITE               = 0x20,
  84           HIF_REG_PHY_CMD1_PHYADDR             = 0x01,
  85        HIF_REG_PHY_CMD2                        = 0x0d,
  86           HIF_REG_PHY_CMD2_PEND_FLAG_BIT       = 0x80,
  87           HIF_REG_PHY_CMD2_READY_FLAG_BIT      = 0x40,
  88        HIF_REG_CONFIG                          = 0x0e,
  89        /* hmm, spec sez: "R/W", "Except bit 3" (likely TXENABLE). */
  90           HIF_REG_CONFIG_CFG                   = 0x80,
  91           HIF_REG_CONFIG_SPEED100              = 0x40,
  92           HIF_REG_CONFIG_FULLDUPLEX_ENABLE     = 0x20,
  93           HIF_REG_CONFIG_RXENABLE              = 0x10,
  94           HIF_REG_CONFIG_TXENABLE              = 0x08,
  95           HIF_REG_CONFIG_SLEEPMODE             = 0x04,
  96           HIF_REG_CONFIG_ALLMULTICAST          = 0x02,
  97           HIF_REG_CONFIG_PROMISCUOUS           = 0x01,
  98        HIF_REG_ETHERNET_ADDR                   = 0x0f,
  99        HIF_REG_FRAME_DROP_COUNTER              = 0x15, /* 0..ff; reset: 0 */
 100        HIF_REG_PAUSE_THRESHOLD                 = 0x16,
 101           HIF_REG_PAUSE_THRESHOLD_DEFAULT      = 0,
 102};
 103
 104/* Trailing status byte in Ethernet Rx frame */
 105enum {
 106        MCS7830_RX_SHORT_FRAME          = 0x01, /* < 64 bytes */
 107        MCS7830_RX_LENGTH_ERROR         = 0x02, /* framelen != Ethernet length field */
 108        MCS7830_RX_ALIGNMENT_ERROR      = 0x04, /* non-even number of nibbles */
 109        MCS7830_RX_CRC_ERROR            = 0x08,
 110        MCS7830_RX_LARGE_FRAME          = 0x10, /* > 1518 bytes */
 111        MCS7830_RX_FRAME_CORRECT        = 0x20, /* frame is correct */
 112        /* [7:6] reserved */
 113};
 114
 115struct mcs7830_data {
 116        u8 multi_filter[8];
 117        u8 config;
 118};
 119
 120static const char driver_name[] = "MOSCHIP usb-ethernet driver";
 121
 122static int mcs7830_get_reg(struct usbnet *dev, u16 index, u16 size, void *data)
 123{
 124        return usbnet_read_cmd(dev, MCS7830_RD_BREQ, MCS7830_RD_BMREQ,
 125                                0x0000, index, data, size);
 126}
 127
 128static int mcs7830_set_reg(struct usbnet *dev, u16 index, u16 size, const void *data)
 129{
 130        return usbnet_write_cmd(dev, MCS7830_WR_BREQ, MCS7830_WR_BMREQ,
 131                                0x0000, index, data, size);
 132}
 133
 134static void mcs7830_set_reg_async(struct usbnet *dev, u16 index, u16 size, void *data)
 135{
 136        usbnet_write_cmd_async(dev, MCS7830_WR_BREQ, MCS7830_WR_BMREQ,
 137                                0x0000, index, data, size);
 138}
 139
 140static int mcs7830_hif_get_mac_address(struct usbnet *dev, unsigned char *addr)
 141{
 142        int ret = mcs7830_get_reg(dev, HIF_REG_ETHERNET_ADDR, ETH_ALEN, addr);
 143        if (ret < 0)
 144                return ret;
 145        return 0;
 146}
 147
 148static int mcs7830_hif_set_mac_address(struct usbnet *dev, unsigned char *addr)
 149{
 150        int ret = mcs7830_set_reg(dev, HIF_REG_ETHERNET_ADDR, ETH_ALEN, addr);
 151
 152        if (ret < 0)
 153                return ret;
 154        return 0;
 155}
 156
 157static int mcs7830_set_mac_address(struct net_device *netdev, void *p)
 158{
 159        int ret;
 160        struct usbnet *dev = netdev_priv(netdev);
 161        struct sockaddr *addr = p;
 162
 163        if (netif_running(netdev))
 164                return -EBUSY;
 165
 166        if (!is_valid_ether_addr(addr->sa_data))
 167                return -EADDRNOTAVAIL;
 168
 169        ret = mcs7830_hif_set_mac_address(dev, addr->sa_data);
 170
 171        if (ret < 0)
 172                return ret;
 173
 174        /* it worked --> adopt it on netdev side */
 175        memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
 176
 177        return 0;
 178}
 179
 180static int mcs7830_read_phy(struct usbnet *dev, u8 index)
 181{
 182        int ret;
 183        int i;
 184        __le16 val;
 185
 186        u8 cmd[2] = {
 187                HIF_REG_PHY_CMD1_READ | HIF_REG_PHY_CMD1_PHYADDR,
 188                HIF_REG_PHY_CMD2_PEND_FLAG_BIT | index,
 189        };
 190
 191        mutex_lock(&dev->phy_mutex);
 192        /* write the MII command */
 193        ret = mcs7830_set_reg(dev, HIF_REG_PHY_CMD1, 2, cmd);
 194        if (ret < 0)
 195                goto out;
 196
 197        /* wait for the data to become valid, should be within < 1ms */
 198        for (i = 0; i < 10; i++) {
 199                ret = mcs7830_get_reg(dev, HIF_REG_PHY_CMD1, 2, cmd);
 200                if ((ret < 0) || (cmd[1] & HIF_REG_PHY_CMD2_READY_FLAG_BIT))
 201                        break;
 202                ret = -EIO;
 203                msleep(1);
 204        }
 205        if (ret < 0)
 206                goto out;
 207
 208        /* read actual register contents */
 209        ret = mcs7830_get_reg(dev, HIF_REG_PHY_DATA, 2, &val);
 210        if (ret < 0)
 211                goto out;
 212        ret = le16_to_cpu(val);
 213        dev_dbg(&dev->udev->dev, "read PHY reg %02x: %04x (%d tries)\n",
 214                index, val, i);
 215out:
 216        mutex_unlock(&dev->phy_mutex);
 217        return ret;
 218}
 219
 220static int mcs7830_write_phy(struct usbnet *dev, u8 index, u16 val)
 221{
 222        int ret;
 223        int i;
 224        __le16 le_val;
 225
 226        u8 cmd[2] = {
 227                HIF_REG_PHY_CMD1_WRITE | HIF_REG_PHY_CMD1_PHYADDR,
 228                HIF_REG_PHY_CMD2_PEND_FLAG_BIT | (index & 0x1F),
 229        };
 230
 231        mutex_lock(&dev->phy_mutex);
 232
 233        /* write the new register contents */
 234        le_val = cpu_to_le16(val);
 235        ret = mcs7830_set_reg(dev, HIF_REG_PHY_DATA, 2, &le_val);
 236        if (ret < 0)
 237                goto out;
 238
 239        /* write the MII command */
 240        ret = mcs7830_set_reg(dev, HIF_REG_PHY_CMD1, 2, cmd);
 241        if (ret < 0)
 242                goto out;
 243
 244        /* wait for the command to be accepted by the PHY */
 245        for (i = 0; i < 10; i++) {
 246                ret = mcs7830_get_reg(dev, HIF_REG_PHY_CMD1, 2, cmd);
 247                if ((ret < 0) || (cmd[1] & HIF_REG_PHY_CMD2_READY_FLAG_BIT))
 248                        break;
 249                ret = -EIO;
 250                msleep(1);
 251        }
 252        if (ret < 0)
 253                goto out;
 254
 255        ret = 0;
 256        dev_dbg(&dev->udev->dev, "write PHY reg %02x: %04x (%d tries)\n",
 257                index, val, i);
 258out:
 259        mutex_unlock(&dev->phy_mutex);
 260        return ret;
 261}
 262
 263/*
 264 * This algorithm comes from the original mcs7830 version 1.4 driver,
 265 * not sure if it is needed.
 266 */
 267static int mcs7830_set_autoneg(struct usbnet *dev, int ptrUserPhyMode)
 268{
 269        int ret;
 270        /* Enable all media types */
 271        ret = mcs7830_write_phy(dev, MII_ADVERTISE, MCS7830_MII_ADVERTISE);
 272
 273        /* First reset BMCR */
 274        if (!ret)
 275                ret = mcs7830_write_phy(dev, MII_BMCR, 0x0000);
 276        /* Enable Auto Neg */
 277        if (!ret)
 278                ret = mcs7830_write_phy(dev, MII_BMCR, BMCR_ANENABLE);
 279        /* Restart Auto Neg (Keep the Enable Auto Neg Bit Set) */
 280        if (!ret)
 281                ret = mcs7830_write_phy(dev, MII_BMCR,
 282                                BMCR_ANENABLE | BMCR_ANRESTART  );
 283        return ret;
 284}
 285
 286
 287/*
 288 * if we can read register 22, the chip revision is C or higher
 289 */
 290static int mcs7830_get_rev(struct usbnet *dev)
 291{
 292        u8 dummy[2];
 293        int ret;
 294        ret = mcs7830_get_reg(dev, HIF_REG_FRAME_DROP_COUNTER, 2, dummy);
 295        if (ret > 0)
 296                return 2; /* Rev C or later */
 297        return 1; /* earlier revision */
 298}
 299
 300/*
 301 * On rev. C we need to set the pause threshold
 302 */
 303static void mcs7830_rev_C_fixup(struct usbnet *dev)
 304{
 305        u8 pause_threshold = HIF_REG_PAUSE_THRESHOLD_DEFAULT;
 306        int retry;
 307
 308        for (retry = 0; retry < 2; retry++) {
 309                if (mcs7830_get_rev(dev) == 2) {
 310                        dev_info(&dev->udev->dev, "applying rev.C fixup\n");
 311                        mcs7830_set_reg(dev, HIF_REG_PAUSE_THRESHOLD,
 312                                        1, &pause_threshold);
 313                }
 314                msleep(1);
 315        }
 316}
 317
 318static int mcs7830_mdio_read(struct net_device *netdev, int phy_id,
 319                             int location)
 320{
 321        struct usbnet *dev = netdev_priv(netdev);
 322        return mcs7830_read_phy(dev, location);
 323}
 324
 325static void mcs7830_mdio_write(struct net_device *netdev, int phy_id,
 326                                int location, int val)
 327{
 328        struct usbnet *dev = netdev_priv(netdev);
 329        mcs7830_write_phy(dev, location, val);
 330}
 331
 332static int mcs7830_ioctl(struct net_device *net, struct ifreq *rq, int cmd)
 333{
 334        struct usbnet *dev = netdev_priv(net);
 335        return generic_mii_ioctl(&dev->mii, if_mii(rq), cmd, NULL);
 336}
 337
 338static inline struct mcs7830_data *mcs7830_get_data(struct usbnet *dev)
 339{
 340        return (struct mcs7830_data *)&dev->data;
 341}
 342
 343static void mcs7830_hif_update_multicast_hash(struct usbnet *dev)
 344{
 345        struct mcs7830_data *data = mcs7830_get_data(dev);
 346        mcs7830_set_reg_async(dev, HIF_REG_MULTICAST_HASH,
 347                                sizeof data->multi_filter,
 348                                data->multi_filter);
 349}
 350
 351static void mcs7830_hif_update_config(struct usbnet *dev)
 352{
 353        /* implementation specific to data->config
 354           (argument needs to be heap-based anyway - USB DMA!) */
 355        struct mcs7830_data *data = mcs7830_get_data(dev);
 356        mcs7830_set_reg_async(dev, HIF_REG_CONFIG, 1, &data->config);
 357}
 358
 359static void mcs7830_data_set_multicast(struct net_device *net)
 360{
 361        struct usbnet *dev = netdev_priv(net);
 362        struct mcs7830_data *data = mcs7830_get_data(dev);
 363
 364        memset(data->multi_filter, 0, sizeof data->multi_filter);
 365
 366        data->config = HIF_REG_CONFIG_TXENABLE;
 367
 368        /* this should not be needed, but it doesn't work otherwise */
 369        data->config |= HIF_REG_CONFIG_ALLMULTICAST;
 370
 371        if (net->flags & IFF_PROMISC) {
 372                data->config |= HIF_REG_CONFIG_PROMISCUOUS;
 373        } else if (net->flags & IFF_ALLMULTI ||
 374                   netdev_mc_count(net) > MCS7830_MAX_MCAST) {
 375                data->config |= HIF_REG_CONFIG_ALLMULTICAST;
 376        } else if (netdev_mc_empty(net)) {
 377                /* just broadcast and directed */
 378        } else {
 379                /* We use the 20 byte dev->data
 380                 * for our 8 byte filter buffer
 381                 * to avoid allocating memory that
 382                 * is tricky to free later */
 383                struct netdev_hw_addr *ha;
 384                u32 crc_bits;
 385
 386                /* Build the multicast hash filter. */
 387                netdev_for_each_mc_addr(ha, net) {
 388                        crc_bits = ether_crc(ETH_ALEN, ha->addr) >> 26;
 389                        data->multi_filter[crc_bits >> 3] |= 1 << (crc_bits & 7);
 390                }
 391        }
 392}
 393
 394static int mcs7830_apply_base_config(struct usbnet *dev)
 395{
 396        int ret;
 397
 398        /* re-configure known MAC (suspend case etc.) */
 399        ret = mcs7830_hif_set_mac_address(dev, dev->net->dev_addr);
 400        if (ret) {
 401                dev_info(&dev->udev->dev, "Cannot set MAC address\n");
 402                goto out;
 403        }
 404
 405        /* Set up PHY */
 406        ret = mcs7830_set_autoneg(dev, 0);
 407        if (ret) {
 408                dev_info(&dev->udev->dev, "Cannot set autoneg\n");
 409                goto out;
 410        }
 411
 412        mcs7830_hif_update_multicast_hash(dev);
 413        mcs7830_hif_update_config(dev);
 414
 415        mcs7830_rev_C_fixup(dev);
 416        ret = 0;
 417out:
 418        return ret;
 419}
 420
 421/* credits go to asix_set_multicast */
 422static void mcs7830_set_multicast(struct net_device *net)
 423{
 424        struct usbnet *dev = netdev_priv(net);
 425
 426        mcs7830_data_set_multicast(net);
 427
 428        mcs7830_hif_update_multicast_hash(dev);
 429        mcs7830_hif_update_config(dev);
 430}
 431
 432static int mcs7830_get_regs_len(struct net_device *net)
 433{
 434        struct usbnet *dev = netdev_priv(net);
 435
 436        switch (mcs7830_get_rev(dev)) {
 437        case 1:
 438                return 21;
 439        case 2:
 440                return 32;
 441        }
 442        return 0;
 443}
 444
 445static void mcs7830_get_drvinfo(struct net_device *net, struct ethtool_drvinfo *drvinfo)
 446{
 447        usbnet_get_drvinfo(net, drvinfo);
 448}
 449
 450static void mcs7830_get_regs(struct net_device *net, struct ethtool_regs *regs, void *data)
 451{
 452        struct usbnet *dev = netdev_priv(net);
 453
 454        regs->version = mcs7830_get_rev(dev);
 455        mcs7830_get_reg(dev, 0, regs->len, data);
 456}
 457
 458static const struct ethtool_ops mcs7830_ethtool_ops = {
 459        .get_drvinfo            = mcs7830_get_drvinfo,
 460        .get_regs_len           = mcs7830_get_regs_len,
 461        .get_regs               = mcs7830_get_regs,
 462
 463        /* common usbnet calls */
 464        .get_link               = usbnet_get_link,
 465        .get_msglevel           = usbnet_get_msglevel,
 466        .set_msglevel           = usbnet_set_msglevel,
 467        .get_settings           = usbnet_get_settings,
 468        .set_settings           = usbnet_set_settings,
 469        .nway_reset             = usbnet_nway_reset,
 470};
 471
 472static const struct net_device_ops mcs7830_netdev_ops = {
 473        .ndo_open               = usbnet_open,
 474        .ndo_stop               = usbnet_stop,
 475        .ndo_start_xmit         = usbnet_start_xmit,
 476        .ndo_tx_timeout         = usbnet_tx_timeout,
 477        .ndo_change_mtu         = usbnet_change_mtu,
 478        .ndo_validate_addr      = eth_validate_addr,
 479        .ndo_do_ioctl           = mcs7830_ioctl,
 480        .ndo_set_rx_mode        = mcs7830_set_multicast,
 481        .ndo_set_mac_address    = mcs7830_set_mac_address,
 482};
 483
 484static int mcs7830_bind(struct usbnet *dev, struct usb_interface *udev)
 485{
 486        struct net_device *net = dev->net;
 487        int ret;
 488        int retry;
 489
 490        /* Initial startup: Gather MAC address setting from EEPROM */
 491        ret = -EINVAL;
 492        for (retry = 0; retry < 5 && ret; retry++)
 493                ret = mcs7830_hif_get_mac_address(dev, net->dev_addr);
 494        if (ret) {
 495                dev_warn(&dev->udev->dev, "Cannot read MAC address\n");
 496                goto out;
 497        }
 498
 499        mcs7830_data_set_multicast(net);
 500
 501        ret = mcs7830_apply_base_config(dev);
 502        if (ret)
 503                goto out;
 504
 505        net->ethtool_ops = &mcs7830_ethtool_ops;
 506        net->netdev_ops = &mcs7830_netdev_ops;
 507
 508        /* reserve space for the status byte on rx */
 509        dev->rx_urb_size = ETH_FRAME_LEN + 1;
 510
 511        dev->mii.mdio_read = mcs7830_mdio_read;
 512        dev->mii.mdio_write = mcs7830_mdio_write;
 513        dev->mii.dev = net;
 514        dev->mii.phy_id_mask = 0x3f;
 515        dev->mii.reg_num_mask = 0x1f;
 516        dev->mii.phy_id = *((u8 *) net->dev_addr + 1);
 517
 518        ret = usbnet_get_endpoints(dev, udev);
 519out:
 520        return ret;
 521}
 522
 523/* The chip always appends a status byte that we need to strip */
 524static int mcs7830_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
 525{
 526        u8 status;
 527
 528        /* This check is no longer done by usbnet */
 529        if (skb->len < dev->net->hard_header_len) {
 530                dev_err(&dev->udev->dev, "unexpected tiny rx frame\n");
 531                return 0;
 532        }
 533
 534        skb_trim(skb, skb->len - 1);
 535        status = skb->data[skb->len];
 536
 537        if (status != MCS7830_RX_FRAME_CORRECT) {
 538                dev_dbg(&dev->udev->dev, "rx fixup status %x\n", status);
 539
 540                /* hmm, perhaps usbnet.c already sees a globally visible
 541                   frame error and increments rx_errors on its own already? */
 542                dev->net->stats.rx_errors++;
 543
 544                if (status &    (MCS7830_RX_SHORT_FRAME
 545                                |MCS7830_RX_LENGTH_ERROR
 546                                |MCS7830_RX_LARGE_FRAME))
 547                        dev->net->stats.rx_length_errors++;
 548                if (status & MCS7830_RX_ALIGNMENT_ERROR)
 549                        dev->net->stats.rx_frame_errors++;
 550                if (status & MCS7830_RX_CRC_ERROR)
 551                        dev->net->stats.rx_crc_errors++;
 552        }
 553
 554        return skb->len > 0;
 555}
 556
 557static void mcs7830_status(struct usbnet *dev, struct urb *urb)
 558{
 559        u8 *buf = urb->transfer_buffer;
 560        bool link, link_changed;
 561
 562        if (urb->actual_length < 16)
 563                return;
 564
 565        link = !(buf[1] == 0x20);
 566        link_changed = netif_carrier_ok(dev->net) != link;
 567        if (link_changed) {
 568                usbnet_link_change(dev, link, 0);
 569                netdev_dbg(dev->net, "Link Status is: %d\n", link);
 570        }
 571}
 572
 573static const struct driver_info moschip_info = {
 574        .description    = "MOSCHIP 7830/7832/7730 usb-NET adapter",
 575        .bind           = mcs7830_bind,
 576        .rx_fixup       = mcs7830_rx_fixup,
 577        .flags          = FLAG_ETHER | FLAG_LINK_INTR,
 578        .status         = mcs7830_status,
 579        .in             = 1,
 580        .out            = 2,
 581};
 582
 583static const struct driver_info sitecom_info = {
 584        .description    = "Sitecom LN-30 usb-NET adapter",
 585        .bind           = mcs7830_bind,
 586        .rx_fixup       = mcs7830_rx_fixup,
 587        .flags          = FLAG_ETHER | FLAG_LINK_INTR,
 588        .status         = mcs7830_status,
 589        .in             = 1,
 590        .out            = 2,
 591};
 592
 593static const struct usb_device_id products[] = {
 594        {
 595                USB_DEVICE(MCS7830_VENDOR_ID, MCS7832_PRODUCT_ID),
 596                .driver_info = (unsigned long) &moschip_info,
 597        },
 598        {
 599                USB_DEVICE(MCS7830_VENDOR_ID, MCS7830_PRODUCT_ID),
 600                .driver_info = (unsigned long) &moschip_info,
 601        },
 602        {
 603                USB_DEVICE(MCS7830_VENDOR_ID, MCS7730_PRODUCT_ID),
 604                .driver_info = (unsigned long) &moschip_info,
 605        },
 606        {
 607                USB_DEVICE(SITECOM_VENDOR_ID, LN_030_PRODUCT_ID),
 608                .driver_info = (unsigned long) &sitecom_info,
 609        },
 610        {},
 611};
 612MODULE_DEVICE_TABLE(usb, products);
 613
 614static int mcs7830_reset_resume (struct usb_interface *intf)
 615{
 616        /* YES, this function is successful enough that ethtool -d
 617           does show same output pre-/post-suspend */
 618
 619        struct usbnet           *dev = usb_get_intfdata(intf);
 620
 621        mcs7830_apply_base_config(dev);
 622
 623        usbnet_resume(intf);
 624
 625        return 0;
 626}
 627
 628static struct usb_driver mcs7830_driver = {
 629        .name = driver_name,
 630        .id_table = products,
 631        .probe = usbnet_probe,
 632        .disconnect = usbnet_disconnect,
 633        .suspend = usbnet_suspend,
 634        .resume = usbnet_resume,
 635        .reset_resume = mcs7830_reset_resume,
 636        .disable_hub_initiated_lpm = 1,
 637};
 638
 639module_usb_driver(mcs7830_driver);
 640
 641MODULE_DESCRIPTION("USB to network adapter MCS7830)");
 642MODULE_LICENSE("GPL");
 643