drivers/net/usb/mcs7830.c

   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 */
  76 enum {
  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 */
 105 enum {
 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
 115 struct mcs7830_data {
 116         u8 multi_filter[8];
 117         u8 config;
 118 };
 119
 120 static const char driver_name[] = "MOSCHIP usb-ethernet driver";
 121
 122 static 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
 128 static 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
 134 static 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
 140 static 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
 148 static 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
 157 static 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
 180 static 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);
 215 out:
 216         mutex_unlock(&dev->phy_mutex);
 217         return ret;
 218 }
 219
 220 static 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);
 258 out:
 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  */
 267 static 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  */
 290 static 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  */
 303 static 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
 318 static 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
 325 static 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
 332 static 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
 338 static inline struct mcs7830_data *mcs7830_get_data(struct usbnet *dev)
 339 {
 340         return (struct mcs7830_data *)&dev->data;
 341 }
 342
 343 static 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
 351 static 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
 359 static 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
 394 static 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;
 417 out:
 418         return ret;
 419 }
 420
 421 /* credits go to asix_set_multicast */
 422 static 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
 432 static 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
 445 static void mcs7830_get_drvinfo(struct net_device *net, struct ethtool_drvinfo *drvinfo)
 446 {
 447         usbnet_get_drvinfo(net, drvinfo);
 448 }
 449
 450 static 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
 458 static 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         .nway_reset             = usbnet_nway_reset,
 468         .get_link_ksettings     = usbnet_get_link_ksettings,
 469         .set_link_ksettings     = usbnet_set_link_ksettings,
 470 };
 471
 472 static 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_get_stats64        = usbnet_get_stats64,
 479         .ndo_validate_addr      = eth_validate_addr,
 480         .ndo_do_ioctl           = mcs7830_ioctl,
 481         .ndo_set_rx_mode        = mcs7830_set_multicast,
 482         .ndo_set_mac_address    = mcs7830_set_mac_address,
 483 };
 484
 485 static int mcs7830_bind(struct usbnet *dev, struct usb_interface *udev)
 486 {
 487         struct net_device *net = dev->net;
 488         int ret;
 489         int retry;
 490
 491         /* Initial startup: Gather MAC address setting from EEPROM */
 492         ret = -EINVAL;
 493         for (retry = 0; retry < 5 && ret; retry++)
 494                 ret = mcs7830_hif_get_mac_address(dev, net->dev_addr);
 495         if (ret) {
 496                 dev_warn(&dev->udev->dev, "Cannot read MAC address\n");
 497                 goto out;
 498         }
 499
 500         mcs7830_data_set_multicast(net);
 501
 502         ret = mcs7830_apply_base_config(dev);
 503         if (ret)
 504                 goto out;
 505
 506         net->ethtool_ops = &mcs7830_ethtool_ops;
 507         net->netdev_ops = &mcs7830_netdev_ops;
 508
 509         /* reserve space for the status byte on rx */
 510         dev->rx_urb_size = ETH_FRAME_LEN + 1;
 511
 512         dev->mii.mdio_read = mcs7830_mdio_read;
 513         dev->mii.mdio_write = mcs7830_mdio_write;
 514         dev->mii.dev = net;
 515         dev->mii.phy_id_mask = 0x3f;
 516         dev->mii.reg_num_mask = 0x1f;
 517         dev->mii.phy_id = *((u8 *) net->dev_addr + 1);
 518
 519         ret = usbnet_get_endpoints(dev, udev);
 520 out:
 521         return ret;
 522 }
 523
 524 /* The chip always appends a status byte that we need to strip */
 525 static int mcs7830_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
 526 {
 527         u8 status;
 528
 529         /* This check is no longer done by usbnet */
 530         if (skb->len < dev->net->hard_header_len) {
 531                 dev_err(&dev->udev->dev, "unexpected tiny rx frame\n");
 532                 return 0;
 533         }
 534
 535         skb_trim(skb, skb->len - 1);
 536         status = skb->data[skb->len];
 537
 538         if (status != MCS7830_RX_FRAME_CORRECT) {
 539                 dev_dbg(&dev->udev->dev, "rx fixup status %x\n", status);
 540
 541                 /* hmm, perhaps usbnet.c already sees a globally visible
 542                    frame error and increments rx_errors on its own already? */
 543                 dev->net->stats.rx_errors++;
 544
 545                 if (status &    (MCS7830_RX_SHORT_FRAME
 546                                 |MCS7830_RX_LENGTH_ERROR
 547                                 |MCS7830_RX_LARGE_FRAME))
 548                         dev->net->stats.rx_length_errors++;
 549                 if (status & MCS7830_RX_ALIGNMENT_ERROR)
 550                         dev->net->stats.rx_frame_errors++;
 551                 if (status & MCS7830_RX_CRC_ERROR)
 552                         dev->net->stats.rx_crc_errors++;
 553         }
 554
 555         return skb->len > 0;
 556 }
 557
 558 static void mcs7830_status(struct usbnet *dev, struct urb *urb)
 559 {
 560         u8 *buf = urb->transfer_buffer;
 561         bool link, link_changed;
 562
 563         if (urb->actual_length < 16)
 564                 return;
 565
 566         link = !(buf[1] == 0x20);
 567         link_changed = netif_carrier_ok(dev->net) != link;
 568         if (link_changed) {
 569                 usbnet_link_change(dev, link, 0);
 570                 netdev_dbg(dev->net, "Link Status is: %d\n", link);
 571         }
 572 }
 573
 574 static const struct driver_info moschip_info = {
 575         .description    = "MOSCHIP 7830/7832/7730 usb-NET adapter",
 576         .bind           = mcs7830_bind,
 577         .rx_fixup       = mcs7830_rx_fixup,
 578         .flags          = FLAG_ETHER | FLAG_LINK_INTR,
 579         .status         = mcs7830_status,
 580         .in             = 1,
 581         .out            = 2,
 582 };
 583
 584 static const struct driver_info sitecom_info = {
 585         .description    = "Sitecom LN-30 usb-NET adapter",
 586         .bind           = mcs7830_bind,
 587         .rx_fixup       = mcs7830_rx_fixup,
 588         .flags          = FLAG_ETHER | FLAG_LINK_INTR,
 589         .status         = mcs7830_status,
 590         .in             = 1,
 591         .out            = 2,
 592 };
 593
 594 static const struct usb_device_id products[] = {
 595         {
 596                 USB_DEVICE(MCS7830_VENDOR_ID, MCS7832_PRODUCT_ID),
 597                 .driver_info = (unsigned long) &moschip_info,
 598         },
 599         {
 600                 USB_DEVICE(MCS7830_VENDOR_ID, MCS7830_PRODUCT_ID),
 601                 .driver_info = (unsigned long) &moschip_info,
 602         },
 603         {
 604                 USB_DEVICE(MCS7830_VENDOR_ID, MCS7730_PRODUCT_ID),
 605                 .driver_info = (unsigned long) &moschip_info,
 606         },
 607         {
 608                 USB_DEVICE(SITECOM_VENDOR_ID, LN_030_PRODUCT_ID),
 609                 .driver_info = (unsigned long) &sitecom_info,
 610         },
 611         {},
 612 };
 613 MODULE_DEVICE_TABLE(usb, products);
 614
 615 static int mcs7830_reset_resume (struct usb_interface *intf)
 616 {
 617         /* YES, this function is successful enough that ethtool -d
 618            does show same output pre-/post-suspend */
 619
 620         struct usbnet           *dev = usb_get_intfdata(intf);
 621
 622         mcs7830_apply_base_config(dev);
 623
 624         usbnet_resume(intf);
 625
 626         return 0;
 627 }
 628
 629 static struct usb_driver mcs7830_driver = {
 630         .name = driver_name,
 631         .id_table = products,
 632         .probe = usbnet_probe,
 633         .disconnect = usbnet_disconnect,
 634         .suspend = usbnet_suspend,
 635         .resume = usbnet_resume,
 636         .reset_resume = mcs7830_reset_resume,
 637         .disable_hub_initiated_lpm = 1,
 638 };
 639
 640 module_usb_driver(mcs7830_driver);
 641
 642 MODULE_DESCRIPTION("USB to network adapter MCS7830)");
 643 MODULE_LICENSE("GPL");