1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * MOSCHIP MCS7830 based (7730/7830/7832) USB 2.0 Ethernet Devices 4 * 5 * based on usbnet.c, asix.c and the vendor provided mcs7830 driver 6 * 7 * Copyright (C) 2010 Andreas Mohr <andi@lisas.de> 8 * Copyright (C) 2006 Arnd Bergmann <arnd@arndb.de> 9 * Copyright (C) 2003-2005 David Hollis <dhollis@davehollis.com> 10 * Copyright (C) 2005 Phil Chang <pchang23@sbcglobal.net> 11 * Copyright (c) 2002-2003 TiVo Inc. 12 * 13 * Definitions gathered from MOSCHIP, Data Sheet_7830DA.pdf (thanks!). 14 * 15 * 2010-12-19: add 7832 USB PID ("functionality same as MCS7830"), 16 * per active notification by manufacturer 17 * 18 * TODO: 19 * - support HIF_REG_CONFIG_SLEEPMODE/HIF_REG_CONFIG_TXENABLE (via autopm?) 20 * - implement ethtool_ops get_pauseparam/set_pauseparam 21 * via HIF_REG_PAUSE_THRESHOLD (>= revision C only!) 22 * - implement get_eeprom/[set_eeprom] 23 * - switch PHY on/off on ifup/ifdown (perhaps in usbnet.c, via MII) 24 * - mcs7830_get_regs() handling is weird: for rev 2 we return 32 regs, 25 * can access only ~ 24, remaining user buffer is uninitialized garbage 26 * - anything else? 27 */ 28 29 #include <linux/crc32.h> 30 #include <linux/etherdevice.h> 31 #include <linux/ethtool.h> 32 #include <linux/mii.h> 33 #include <linux/module.h> 34 #include <linux/netdevice.h> 35 #include <linux/slab.h> 36 #include <linux/usb.h> 37 #include <linux/usb/usbnet.h> 38 39 /* requests */ 40 #define MCS7830_RD_BMREQ (USB_DIR_IN | USB_TYPE_VENDOR | \ 41 USB_RECIP_DEVICE) 42 #define MCS7830_WR_BMREQ (USB_DIR_OUT | USB_TYPE_VENDOR | \ 43 USB_RECIP_DEVICE) 44 #define MCS7830_RD_BREQ 0x0E 45 #define MCS7830_WR_BREQ 0x0D 46 47 #define MCS7830_CTRL_TIMEOUT 1000 48 #define MCS7830_MAX_MCAST 64 49 50 #define MCS7830_VENDOR_ID 0x9710 51 #define MCS7832_PRODUCT_ID 0x7832 52 #define MCS7830_PRODUCT_ID 0x7830 53 #define MCS7730_PRODUCT_ID 0x7730 54 55 #define SITECOM_VENDOR_ID 0x0DF6 56 #define LN_030_PRODUCT_ID 0x0021 57 58 #define MCS7830_MII_ADVERTISE (ADVERTISE_PAUSE_CAP | ADVERTISE_100FULL | \ 59 ADVERTISE_100HALF | ADVERTISE_10FULL | \ 60 ADVERTISE_10HALF | ADVERTISE_CSMA) 61 62 /* HIF_REG_XX corresponding index value */ 63 enum { 64 HIF_REG_MULTICAST_HASH = 0x00, 65 HIF_REG_PACKET_GAP1 = 0x08, 66 HIF_REG_PACKET_GAP2 = 0x09, 67 HIF_REG_PHY_DATA = 0x0a, 68 HIF_REG_PHY_CMD1 = 0x0c, 69 HIF_REG_PHY_CMD1_READ = 0x40, 70 HIF_REG_PHY_CMD1_WRITE = 0x20, 71 HIF_REG_PHY_CMD1_PHYADDR = 0x01, 72 HIF_REG_PHY_CMD2 = 0x0d, 73 HIF_REG_PHY_CMD2_PEND_FLAG_BIT = 0x80, 74 HIF_REG_PHY_CMD2_READY_FLAG_BIT = 0x40, 75 HIF_REG_CONFIG = 0x0e, 76 /* hmm, spec sez: "R/W", "Except bit 3" (likely TXENABLE). */ 77 HIF_REG_CONFIG_CFG = 0x80, 78 HIF_REG_CONFIG_SPEED100 = 0x40, 79 HIF_REG_CONFIG_FULLDUPLEX_ENABLE = 0x20, 80 HIF_REG_CONFIG_RXENABLE = 0x10, 81 HIF_REG_CONFIG_TXENABLE = 0x08, 82 HIF_REG_CONFIG_SLEEPMODE = 0x04, 83 HIF_REG_CONFIG_ALLMULTICAST = 0x02, 84 HIF_REG_CONFIG_PROMISCUOUS = 0x01, 85 HIF_REG_ETHERNET_ADDR = 0x0f, 86 HIF_REG_FRAME_DROP_COUNTER = 0x15, /* 0..ff; reset: 0 */ 87 HIF_REG_PAUSE_THRESHOLD = 0x16, 88 HIF_REG_PAUSE_THRESHOLD_DEFAULT = 0, 89 }; 90 91 /* Trailing status byte in Ethernet Rx frame */ 92 enum { 93 MCS7830_RX_SHORT_FRAME = 0x01, /* < 64 bytes */ 94 MCS7830_RX_LENGTH_ERROR = 0x02, /* framelen != Ethernet length field */ 95 MCS7830_RX_ALIGNMENT_ERROR = 0x04, /* non-even number of nibbles */ 96 MCS7830_RX_CRC_ERROR = 0x08, 97 MCS7830_RX_LARGE_FRAME = 0x10, /* > 1518 bytes */ 98 MCS7830_RX_FRAME_CORRECT = 0x20, /* frame is correct */ 99 /* [7:6] reserved */ 100 }; 101 102 struct mcs7830_data { 103 u8 multi_filter[8]; 104 u8 config; 105 }; 106 107 static const char driver_name[] = "MOSCHIP usb-ethernet driver"; 108 109 static int mcs7830_get_reg(struct usbnet *dev, u16 index, u16 size, void *data) 110 { 111 int ret; 112 113 ret = usbnet_read_cmd(dev, MCS7830_RD_BREQ, MCS7830_RD_BMREQ, 114 0x0000, index, data, size); 115 if (ret < 0) 116 return ret; 117 else if (ret < size) 118 return -ENODATA; 119 120 return ret; 121 } 122 123 static int mcs7830_set_reg(struct usbnet *dev, u16 index, u16 size, const void *data) 124 { 125 return usbnet_write_cmd(dev, MCS7830_WR_BREQ, MCS7830_WR_BMREQ, 126 0x0000, index, data, size); 127 } 128 129 static void mcs7830_set_reg_async(struct usbnet *dev, u16 index, u16 size, void *data) 130 { 131 usbnet_write_cmd_async(dev, MCS7830_WR_BREQ, MCS7830_WR_BMREQ, 132 0x0000, index, data, size); 133 } 134 135 static int mcs7830_hif_get_mac_address(struct usbnet *dev, unsigned char *addr) 136 { 137 int ret = mcs7830_get_reg(dev, HIF_REG_ETHERNET_ADDR, ETH_ALEN, addr); 138 if (ret < 0) 139 return ret; 140 return 0; 141 } 142 143 static int mcs7830_hif_set_mac_address(struct usbnet *dev, 144 const unsigned char *addr) 145 { 146 int ret = mcs7830_set_reg(dev, HIF_REG_ETHERNET_ADDR, ETH_ALEN, addr); 147 148 if (ret < 0) 149 return ret; 150 return 0; 151 } 152 153 static int mcs7830_set_mac_address(struct net_device *netdev, void *p) 154 { 155 int ret; 156 struct usbnet *dev = netdev_priv(netdev); 157 struct sockaddr *addr = p; 158 159 if (netif_running(netdev)) 160 return -EBUSY; 161 162 if (!is_valid_ether_addr(addr->sa_data)) 163 return -EADDRNOTAVAIL; 164 165 ret = mcs7830_hif_set_mac_address(dev, addr->sa_data); 166 167 if (ret < 0) 168 return ret; 169 170 /* it worked --> adopt it on netdev side */ 171 eth_hw_addr_set(netdev, addr->sa_data); 172 173 return 0; 174 } 175 176 static int mcs7830_read_phy(struct usbnet *dev, u8 index) 177 { 178 int ret; 179 int i; 180 __le16 val; 181 182 u8 cmd[2] = { 183 HIF_REG_PHY_CMD1_READ | HIF_REG_PHY_CMD1_PHYADDR, 184 HIF_REG_PHY_CMD2_PEND_FLAG_BIT | index, 185 }; 186 187 mutex_lock(&dev->phy_mutex); 188 /* write the MII command */ 189 ret = mcs7830_set_reg(dev, HIF_REG_PHY_CMD1, 2, cmd); 190 if (ret < 0) 191 goto out; 192 193 /* wait for the data to become valid, should be within < 1ms */ 194 for (i = 0; i < 10; i++) { 195 ret = mcs7830_get_reg(dev, HIF_REG_PHY_CMD1, 2, cmd); 196 if ((ret < 0) || (cmd[1] & HIF_REG_PHY_CMD2_READY_FLAG_BIT)) 197 break; 198 ret = -EIO; 199 msleep(1); 200 } 201 if (ret < 0) 202 goto out; 203 204 /* read actual register contents */ 205 ret = mcs7830_get_reg(dev, HIF_REG_PHY_DATA, 2, &val); 206 if (ret < 0) 207 goto out; 208 ret = le16_to_cpu(val); 209 dev_dbg(&dev->udev->dev, "read PHY reg %02x: %04x (%d tries)\n", 210 index, val, i); 211 out: 212 mutex_unlock(&dev->phy_mutex); 213 return ret; 214 } 215 216 static int mcs7830_write_phy(struct usbnet *dev, u8 index, u16 val) 217 { 218 int ret; 219 int i; 220 __le16 le_val; 221 222 u8 cmd[2] = { 223 HIF_REG_PHY_CMD1_WRITE | HIF_REG_PHY_CMD1_PHYADDR, 224 HIF_REG_PHY_CMD2_PEND_FLAG_BIT | (index & 0x1F), 225 }; 226 227 mutex_lock(&dev->phy_mutex); 228 229 /* write the new register contents */ 230 le_val = cpu_to_le16(val); 231 ret = mcs7830_set_reg(dev, HIF_REG_PHY_DATA, 2, &le_val); 232 if (ret < 0) 233 goto out; 234 235 /* 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 command to be accepted by the PHY */ 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 ret = 0; 252 dev_dbg(&dev->udev->dev, "write PHY reg %02x: %04x (%d tries)\n", 253 index, val, i); 254 out: 255 mutex_unlock(&dev->phy_mutex); 256 return ret; 257 } 258 259 /* 260 * This algorithm comes from the original mcs7830 version 1.4 driver, 261 * not sure if it is needed. 262 */ 263 static int mcs7830_set_autoneg(struct usbnet *dev, int ptrUserPhyMode) 264 { 265 int ret; 266 /* Enable all media types */ 267 ret = mcs7830_write_phy(dev, MII_ADVERTISE, MCS7830_MII_ADVERTISE); 268 269 /* First reset BMCR */ 270 if (!ret) 271 ret = mcs7830_write_phy(dev, MII_BMCR, 0x0000); 272 /* Enable Auto Neg */ 273 if (!ret) 274 ret = mcs7830_write_phy(dev, MII_BMCR, BMCR_ANENABLE); 275 /* Restart Auto Neg (Keep the Enable Auto Neg Bit Set) */ 276 if (!ret) 277 ret = mcs7830_write_phy(dev, MII_BMCR, 278 BMCR_ANENABLE | BMCR_ANRESTART ); 279 return ret; 280 } 281 282 283 /* 284 * if we can read register 22, the chip revision is C or higher 285 */ 286 static int mcs7830_get_rev(struct usbnet *dev) 287 { 288 u8 dummy[2]; 289 int ret; 290 ret = mcs7830_get_reg(dev, HIF_REG_FRAME_DROP_COUNTER, 2, dummy); 291 if (ret > 0) 292 return 2; /* Rev C or later */ 293 return 1; /* earlier revision */ 294 } 295 296 /* 297 * On rev. C we need to set the pause threshold 298 */ 299 static void mcs7830_rev_C_fixup(struct usbnet *dev) 300 { 301 u8 pause_threshold = HIF_REG_PAUSE_THRESHOLD_DEFAULT; 302 int retry; 303 304 for (retry = 0; retry < 2; retry++) { 305 if (mcs7830_get_rev(dev) == 2) { 306 dev_info(&dev->udev->dev, "applying rev.C fixup\n"); 307 mcs7830_set_reg(dev, HIF_REG_PAUSE_THRESHOLD, 308 1, &pause_threshold); 309 } 310 msleep(1); 311 } 312 } 313 314 static int mcs7830_mdio_read(struct net_device *netdev, int phy_id, 315 int location) 316 { 317 struct usbnet *dev = netdev_priv(netdev); 318 return mcs7830_read_phy(dev, location); 319 } 320 321 static void mcs7830_mdio_write(struct net_device *netdev, int phy_id, 322 int location, int val) 323 { 324 struct usbnet *dev = netdev_priv(netdev); 325 mcs7830_write_phy(dev, location, val); 326 } 327 328 static inline struct mcs7830_data *mcs7830_get_data(struct usbnet *dev) 329 { 330 return (struct mcs7830_data *)&dev->data; 331 } 332 333 static void mcs7830_hif_update_multicast_hash(struct usbnet *dev) 334 { 335 struct mcs7830_data *data = mcs7830_get_data(dev); 336 mcs7830_set_reg_async(dev, HIF_REG_MULTICAST_HASH, 337 sizeof data->multi_filter, 338 data->multi_filter); 339 } 340 341 static void mcs7830_hif_update_config(struct usbnet *dev) 342 { 343 /* implementation specific to data->config 344 (argument needs to be heap-based anyway - USB DMA!) */ 345 struct mcs7830_data *data = mcs7830_get_data(dev); 346 mcs7830_set_reg_async(dev, HIF_REG_CONFIG, 1, &data->config); 347 } 348 349 static void mcs7830_data_set_multicast(struct net_device *net) 350 { 351 struct usbnet *dev = netdev_priv(net); 352 struct mcs7830_data *data = mcs7830_get_data(dev); 353 354 memset(data->multi_filter, 0, sizeof data->multi_filter); 355 356 data->config = HIF_REG_CONFIG_TXENABLE; 357 358 /* this should not be needed, but it doesn't work otherwise */ 359 data->config |= HIF_REG_CONFIG_ALLMULTICAST; 360 361 if (net->flags & IFF_PROMISC) { 362 data->config |= HIF_REG_CONFIG_PROMISCUOUS; 363 } else if (net->flags & IFF_ALLMULTI || 364 netdev_mc_count(net) > MCS7830_MAX_MCAST) { 365 data->config |= HIF_REG_CONFIG_ALLMULTICAST; 366 } else if (netdev_mc_empty(net)) { 367 /* just broadcast and directed */ 368 } else { 369 /* We use the 20 byte dev->data 370 * for our 8 byte filter buffer 371 * to avoid allocating memory that 372 * is tricky to free later */ 373 struct netdev_hw_addr *ha; 374 u32 crc_bits; 375 376 /* Build the multicast hash filter. */ 377 netdev_for_each_mc_addr(ha, net) { 378 crc_bits = ether_crc(ETH_ALEN, ha->addr) >> 26; 379 data->multi_filter[crc_bits >> 3] |= 1 << (crc_bits & 7); 380 } 381 } 382 } 383 384 static int mcs7830_apply_base_config(struct usbnet *dev) 385 { 386 int ret; 387 388 /* re-configure known MAC (suspend case etc.) */ 389 ret = mcs7830_hif_set_mac_address(dev, dev->net->dev_addr); 390 if (ret) { 391 dev_info(&dev->udev->dev, "Cannot set MAC address\n"); 392 goto out; 393 } 394 395 /* Set up PHY */ 396 ret = mcs7830_set_autoneg(dev, 0); 397 if (ret) { 398 dev_info(&dev->udev->dev, "Cannot set autoneg\n"); 399 goto out; 400 } 401 402 mcs7830_hif_update_multicast_hash(dev); 403 mcs7830_hif_update_config(dev); 404 405 mcs7830_rev_C_fixup(dev); 406 ret = 0; 407 out: 408 return ret; 409 } 410 411 /* credits go to asix_set_multicast */ 412 static void mcs7830_set_multicast(struct net_device *net) 413 { 414 struct usbnet *dev = netdev_priv(net); 415 416 mcs7830_data_set_multicast(net); 417 418 mcs7830_hif_update_multicast_hash(dev); 419 mcs7830_hif_update_config(dev); 420 } 421 422 static int mcs7830_get_regs_len(struct net_device *net) 423 { 424 struct usbnet *dev = netdev_priv(net); 425 426 switch (mcs7830_get_rev(dev)) { 427 case 1: 428 return 21; 429 case 2: 430 return 32; 431 } 432 return 0; 433 } 434 435 static void mcs7830_get_regs(struct net_device *net, struct ethtool_regs *regs, void *data) 436 { 437 struct usbnet *dev = netdev_priv(net); 438 439 regs->version = mcs7830_get_rev(dev); 440 mcs7830_get_reg(dev, 0, regs->len, data); 441 } 442 443 static const struct ethtool_ops mcs7830_ethtool_ops = { 444 .get_regs_len = mcs7830_get_regs_len, 445 .get_regs = mcs7830_get_regs, 446 447 /* common usbnet calls */ 448 .get_drvinfo = usbnet_get_drvinfo, 449 .get_link = usbnet_get_link, 450 .get_msglevel = usbnet_get_msglevel, 451 .set_msglevel = usbnet_set_msglevel, 452 .nway_reset = usbnet_nway_reset, 453 .get_link_ksettings = usbnet_get_link_ksettings_mii, 454 .set_link_ksettings = usbnet_set_link_ksettings_mii, 455 }; 456 457 static const struct net_device_ops mcs7830_netdev_ops = { 458 .ndo_open = usbnet_open, 459 .ndo_stop = usbnet_stop, 460 .ndo_start_xmit = usbnet_start_xmit, 461 .ndo_tx_timeout = usbnet_tx_timeout, 462 .ndo_change_mtu = usbnet_change_mtu, 463 .ndo_get_stats64 = dev_get_tstats64, 464 .ndo_validate_addr = eth_validate_addr, 465 .ndo_eth_ioctl = usbnet_mii_ioctl, 466 .ndo_set_rx_mode = mcs7830_set_multicast, 467 .ndo_set_mac_address = mcs7830_set_mac_address, 468 }; 469 470 static int mcs7830_bind(struct usbnet *dev, struct usb_interface *udev) 471 { 472 struct net_device *net = dev->net; 473 u8 addr[ETH_ALEN]; 474 int ret; 475 int retry; 476 477 /* Initial startup: Gather MAC address setting from EEPROM */ 478 ret = -EINVAL; 479 for (retry = 0; retry < 5 && ret; retry++) 480 ret = mcs7830_hif_get_mac_address(dev, addr); 481 if (ret) { 482 dev_warn(&dev->udev->dev, "Cannot read MAC address\n"); 483 goto out; 484 } 485 eth_hw_addr_set(net, addr); 486 487 mcs7830_data_set_multicast(net); 488 489 ret = mcs7830_apply_base_config(dev); 490 if (ret) 491 goto out; 492 493 net->ethtool_ops = &mcs7830_ethtool_ops; 494 net->netdev_ops = &mcs7830_netdev_ops; 495 496 /* reserve space for the status byte on rx */ 497 dev->rx_urb_size = ETH_FRAME_LEN + 1; 498 499 dev->mii.mdio_read = mcs7830_mdio_read; 500 dev->mii.mdio_write = mcs7830_mdio_write; 501 dev->mii.dev = net; 502 dev->mii.phy_id_mask = 0x3f; 503 dev->mii.reg_num_mask = 0x1f; 504 dev->mii.phy_id = *((u8 *) net->dev_addr + 1); 505 506 ret = usbnet_get_endpoints(dev, udev); 507 out: 508 return ret; 509 } 510 511 /* The chip always appends a status byte that we need to strip */ 512 static int mcs7830_rx_fixup(struct usbnet *dev, struct sk_buff *skb) 513 { 514 u8 status; 515 516 /* This check is no longer done by usbnet */ 517 if (skb->len < dev->net->hard_header_len) { 518 dev_err(&dev->udev->dev, "unexpected tiny rx frame\n"); 519 return 0; 520 } 521 522 skb_trim(skb, skb->len - 1); 523 status = skb->data[skb->len]; 524 525 if (status != MCS7830_RX_FRAME_CORRECT) { 526 dev_dbg(&dev->udev->dev, "rx fixup status %x\n", status); 527 528 /* hmm, perhaps usbnet.c already sees a globally visible 529 frame error and increments rx_errors on its own already? */ 530 dev->net->stats.rx_errors++; 531 532 if (status & (MCS7830_RX_SHORT_FRAME 533 |MCS7830_RX_LENGTH_ERROR 534 |MCS7830_RX_LARGE_FRAME)) 535 dev->net->stats.rx_length_errors++; 536 if (status & MCS7830_RX_ALIGNMENT_ERROR) 537 dev->net->stats.rx_frame_errors++; 538 if (status & MCS7830_RX_CRC_ERROR) 539 dev->net->stats.rx_crc_errors++; 540 } 541 542 return skb->len > 0; 543 } 544 545 static void mcs7830_status(struct usbnet *dev, struct urb *urb) 546 { 547 u8 *buf = urb->transfer_buffer; 548 bool link, link_changed; 549 550 if (urb->actual_length < 16) 551 return; 552 553 link = !(buf[1] == 0x20); 554 link_changed = netif_carrier_ok(dev->net) != link; 555 if (link_changed) { 556 usbnet_link_change(dev, link, 0); 557 netdev_dbg(dev->net, "Link Status is: %d\n", link); 558 } 559 } 560 561 static const struct driver_info moschip_info = { 562 .description = "MOSCHIP 7830/7832/7730 usb-NET adapter", 563 .bind = mcs7830_bind, 564 .rx_fixup = mcs7830_rx_fixup, 565 .flags = FLAG_ETHER | FLAG_LINK_INTR, 566 .status = mcs7830_status, 567 .in = 1, 568 .out = 2, 569 }; 570 571 static const struct driver_info sitecom_info = { 572 .description = "Sitecom LN-30 usb-NET adapter", 573 .bind = mcs7830_bind, 574 .rx_fixup = mcs7830_rx_fixup, 575 .flags = FLAG_ETHER | FLAG_LINK_INTR, 576 .status = mcs7830_status, 577 .in = 1, 578 .out = 2, 579 }; 580 581 static const struct usb_device_id products[] = { 582 { 583 USB_DEVICE(MCS7830_VENDOR_ID, MCS7832_PRODUCT_ID), 584 .driver_info = (unsigned long) &moschip_info, 585 }, 586 { 587 USB_DEVICE(MCS7830_VENDOR_ID, MCS7830_PRODUCT_ID), 588 .driver_info = (unsigned long) &moschip_info, 589 }, 590 { 591 USB_DEVICE(MCS7830_VENDOR_ID, MCS7730_PRODUCT_ID), 592 .driver_info = (unsigned long) &moschip_info, 593 }, 594 { 595 USB_DEVICE(SITECOM_VENDOR_ID, LN_030_PRODUCT_ID), 596 .driver_info = (unsigned long) &sitecom_info, 597 }, 598 {}, 599 }; 600 MODULE_DEVICE_TABLE(usb, products); 601 602 static int mcs7830_reset_resume (struct usb_interface *intf) 603 { 604 /* YES, this function is successful enough that ethtool -d 605 does show same output pre-/post-suspend */ 606 607 struct usbnet *dev = usb_get_intfdata(intf); 608 609 mcs7830_apply_base_config(dev); 610 611 usbnet_resume(intf); 612 613 return 0; 614 } 615 616 static struct usb_driver mcs7830_driver = { 617 .name = driver_name, 618 .id_table = products, 619 .probe = usbnet_probe, 620 .disconnect = usbnet_disconnect, 621 .suspend = usbnet_suspend, 622 .resume = usbnet_resume, 623 .reset_resume = mcs7830_reset_resume, 624 .disable_hub_initiated_lpm = 1, 625 }; 626 627 module_usb_driver(mcs7830_driver); 628 629 MODULE_DESCRIPTION("USB to network adapter MCS7830)"); 630 MODULE_LICENSE("GPL"); 631