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, write to the Free Software 40 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 41 */ 42 43 #include <linux/crc32.h> 44 #include <linux/etherdevice.h> 45 #include <linux/ethtool.h> 46 #include <linux/init.h> 47 #include <linux/mii.h> 48 #include <linux/module.h> 49 #include <linux/netdevice.h> 50 #include <linux/slab.h> 51 #include <linux/usb.h> 52 #include <linux/usb/usbnet.h> 53 54 /* requests */ 55 #define MCS7830_RD_BMREQ (USB_DIR_IN | USB_TYPE_VENDOR | \ 56 USB_RECIP_DEVICE) 57 #define MCS7830_WR_BMREQ (USB_DIR_OUT | USB_TYPE_VENDOR | \ 58 USB_RECIP_DEVICE) 59 #define MCS7830_RD_BREQ 0x0E 60 #define MCS7830_WR_BREQ 0x0D 61 62 #define MCS7830_CTRL_TIMEOUT 1000 63 #define MCS7830_MAX_MCAST 64 64 65 #define MCS7830_VENDOR_ID 0x9710 66 #define MCS7832_PRODUCT_ID 0x7832 67 #define MCS7830_PRODUCT_ID 0x7830 68 #define MCS7730_PRODUCT_ID 0x7730 69 70 #define SITECOM_VENDOR_ID 0x0DF6 71 #define LN_030_PRODUCT_ID 0x0021 72 73 #define MCS7830_MII_ADVERTISE (ADVERTISE_PAUSE_CAP | ADVERTISE_100FULL | \ 74 ADVERTISE_100HALF | ADVERTISE_10FULL | \ 75 ADVERTISE_10HALF | ADVERTISE_CSMA) 76 77 /* HIF_REG_XX corresponding index value */ 78 enum { 79 HIF_REG_MULTICAST_HASH = 0x00, 80 HIF_REG_PACKET_GAP1 = 0x08, 81 HIF_REG_PACKET_GAP2 = 0x09, 82 HIF_REG_PHY_DATA = 0x0a, 83 HIF_REG_PHY_CMD1 = 0x0c, 84 HIF_REG_PHY_CMD1_READ = 0x40, 85 HIF_REG_PHY_CMD1_WRITE = 0x20, 86 HIF_REG_PHY_CMD1_PHYADDR = 0x01, 87 HIF_REG_PHY_CMD2 = 0x0d, 88 HIF_REG_PHY_CMD2_PEND_FLAG_BIT = 0x80, 89 HIF_REG_PHY_CMD2_READY_FLAG_BIT = 0x40, 90 HIF_REG_CONFIG = 0x0e, 91 /* hmm, spec sez: "R/W", "Except bit 3" (likely TXENABLE). */ 92 HIF_REG_CONFIG_CFG = 0x80, 93 HIF_REG_CONFIG_SPEED100 = 0x40, 94 HIF_REG_CONFIG_FULLDUPLEX_ENABLE = 0x20, 95 HIF_REG_CONFIG_RXENABLE = 0x10, 96 HIF_REG_CONFIG_TXENABLE = 0x08, 97 HIF_REG_CONFIG_SLEEPMODE = 0x04, 98 HIF_REG_CONFIG_ALLMULTICAST = 0x02, 99 HIF_REG_CONFIG_PROMISCUOUS = 0x01, 100 HIF_REG_ETHERNET_ADDR = 0x0f, 101 HIF_REG_FRAME_DROP_COUNTER = 0x15, /* 0..ff; reset: 0 */ 102 HIF_REG_PAUSE_THRESHOLD = 0x16, 103 HIF_REG_PAUSE_THRESHOLD_DEFAULT = 0, 104 }; 105 106 /* Trailing status byte in Ethernet Rx frame */ 107 enum { 108 MCS7830_RX_SHORT_FRAME = 0x01, /* < 64 bytes */ 109 MCS7830_RX_LENGTH_ERROR = 0x02, /* framelen != Ethernet length field */ 110 MCS7830_RX_ALIGNMENT_ERROR = 0x04, /* non-even number of nibbles */ 111 MCS7830_RX_CRC_ERROR = 0x08, 112 MCS7830_RX_LARGE_FRAME = 0x10, /* > 1518 bytes */ 113 MCS7830_RX_FRAME_CORRECT = 0x20, /* frame is correct */ 114 /* [7:6] reserved */ 115 }; 116 117 struct mcs7830_data { 118 u8 multi_filter[8]; 119 u8 config; 120 u8 link_counter; 121 }; 122 123 static const char driver_name[] = "MOSCHIP usb-ethernet driver"; 124 125 static int mcs7830_get_reg(struct usbnet *dev, u16 index, u16 size, void *data) 126 { 127 return usbnet_read_cmd(dev, MCS7830_RD_BREQ, MCS7830_RD_BMREQ, 128 0x0000, index, data, size); 129 } 130 131 static int mcs7830_set_reg(struct usbnet *dev, u16 index, u16 size, const void *data) 132 { 133 return usbnet_write_cmd(dev, MCS7830_WR_BREQ, MCS7830_WR_BMREQ, 134 0x0000, index, data, size); 135 } 136 137 static void mcs7830_set_reg_async(struct usbnet *dev, u16 index, u16 size, void *data) 138 { 139 usbnet_write_cmd_async(dev, MCS7830_WR_BREQ, MCS7830_WR_BMREQ, 140 0x0000, index, data, size); 141 } 142 143 static int mcs7830_hif_get_mac_address(struct usbnet *dev, unsigned char *addr) 144 { 145 int ret = mcs7830_get_reg(dev, HIF_REG_ETHERNET_ADDR, ETH_ALEN, addr); 146 if (ret < 0) 147 return ret; 148 return 0; 149 } 150 151 static int mcs7830_hif_set_mac_address(struct usbnet *dev, unsigned char *addr) 152 { 153 int ret = mcs7830_set_reg(dev, HIF_REG_ETHERNET_ADDR, ETH_ALEN, addr); 154 155 if (ret < 0) 156 return ret; 157 return 0; 158 } 159 160 static int mcs7830_set_mac_address(struct net_device *netdev, void *p) 161 { 162 int ret; 163 struct usbnet *dev = netdev_priv(netdev); 164 struct sockaddr *addr = p; 165 166 if (netif_running(netdev)) 167 return -EBUSY; 168 169 if (!is_valid_ether_addr(addr->sa_data)) 170 return -EADDRNOTAVAIL; 171 172 ret = mcs7830_hif_set_mac_address(dev, addr->sa_data); 173 174 if (ret < 0) 175 return ret; 176 177 /* it worked --> adopt it on netdev side */ 178 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); 179 180 return 0; 181 } 182 183 static int mcs7830_read_phy(struct usbnet *dev, u8 index) 184 { 185 int ret; 186 int i; 187 __le16 val; 188 189 u8 cmd[2] = { 190 HIF_REG_PHY_CMD1_READ | HIF_REG_PHY_CMD1_PHYADDR, 191 HIF_REG_PHY_CMD2_PEND_FLAG_BIT | index, 192 }; 193 194 mutex_lock(&dev->phy_mutex); 195 /* write the MII command */ 196 ret = mcs7830_set_reg(dev, HIF_REG_PHY_CMD1, 2, cmd); 197 if (ret < 0) 198 goto out; 199 200 /* wait for the data to become valid, should be within < 1ms */ 201 for (i = 0; i < 10; i++) { 202 ret = mcs7830_get_reg(dev, HIF_REG_PHY_CMD1, 2, cmd); 203 if ((ret < 0) || (cmd[1] & HIF_REG_PHY_CMD2_READY_FLAG_BIT)) 204 break; 205 ret = -EIO; 206 msleep(1); 207 } 208 if (ret < 0) 209 goto out; 210 211 /* read actual register contents */ 212 ret = mcs7830_get_reg(dev, HIF_REG_PHY_DATA, 2, &val); 213 if (ret < 0) 214 goto out; 215 ret = le16_to_cpu(val); 216 dev_dbg(&dev->udev->dev, "read PHY reg %02x: %04x (%d tries)\n", 217 index, val, i); 218 out: 219 mutex_unlock(&dev->phy_mutex); 220 return ret; 221 } 222 223 static int mcs7830_write_phy(struct usbnet *dev, u8 index, u16 val) 224 { 225 int ret; 226 int i; 227 __le16 le_val; 228 229 u8 cmd[2] = { 230 HIF_REG_PHY_CMD1_WRITE | HIF_REG_PHY_CMD1_PHYADDR, 231 HIF_REG_PHY_CMD2_PEND_FLAG_BIT | (index & 0x1F), 232 }; 233 234 mutex_lock(&dev->phy_mutex); 235 236 /* write the new register contents */ 237 le_val = cpu_to_le16(val); 238 ret = mcs7830_set_reg(dev, HIF_REG_PHY_DATA, 2, &le_val); 239 if (ret < 0) 240 goto out; 241 242 /* write the MII command */ 243 ret = mcs7830_set_reg(dev, HIF_REG_PHY_CMD1, 2, cmd); 244 if (ret < 0) 245 goto out; 246 247 /* wait for the command to be accepted by the PHY */ 248 for (i = 0; i < 10; i++) { 249 ret = mcs7830_get_reg(dev, HIF_REG_PHY_CMD1, 2, cmd); 250 if ((ret < 0) || (cmd[1] & HIF_REG_PHY_CMD2_READY_FLAG_BIT)) 251 break; 252 ret = -EIO; 253 msleep(1); 254 } 255 if (ret < 0) 256 goto out; 257 258 ret = 0; 259 dev_dbg(&dev->udev->dev, "write PHY reg %02x: %04x (%d tries)\n", 260 index, val, i); 261 out: 262 mutex_unlock(&dev->phy_mutex); 263 return ret; 264 } 265 266 /* 267 * This algorithm comes from the original mcs7830 version 1.4 driver, 268 * not sure if it is needed. 269 */ 270 static int mcs7830_set_autoneg(struct usbnet *dev, int ptrUserPhyMode) 271 { 272 int ret; 273 /* Enable all media types */ 274 ret = mcs7830_write_phy(dev, MII_ADVERTISE, MCS7830_MII_ADVERTISE); 275 276 /* First reset BMCR */ 277 if (!ret) 278 ret = mcs7830_write_phy(dev, MII_BMCR, 0x0000); 279 /* Enable Auto Neg */ 280 if (!ret) 281 ret = mcs7830_write_phy(dev, MII_BMCR, BMCR_ANENABLE); 282 /* Restart Auto Neg (Keep the Enable Auto Neg Bit Set) */ 283 if (!ret) 284 ret = mcs7830_write_phy(dev, MII_BMCR, 285 BMCR_ANENABLE | BMCR_ANRESTART ); 286 return ret; 287 } 288 289 290 /* 291 * if we can read register 22, the chip revision is C or higher 292 */ 293 static int mcs7830_get_rev(struct usbnet *dev) 294 { 295 u8 dummy[2]; 296 int ret; 297 ret = mcs7830_get_reg(dev, HIF_REG_FRAME_DROP_COUNTER, 2, dummy); 298 if (ret > 0) 299 return 2; /* Rev C or later */ 300 return 1; /* earlier revision */ 301 } 302 303 /* 304 * On rev. C we need to set the pause threshold 305 */ 306 static void mcs7830_rev_C_fixup(struct usbnet *dev) 307 { 308 u8 pause_threshold = HIF_REG_PAUSE_THRESHOLD_DEFAULT; 309 int retry; 310 311 for (retry = 0; retry < 2; retry++) { 312 if (mcs7830_get_rev(dev) == 2) { 313 dev_info(&dev->udev->dev, "applying rev.C fixup\n"); 314 mcs7830_set_reg(dev, HIF_REG_PAUSE_THRESHOLD, 315 1, &pause_threshold); 316 } 317 msleep(1); 318 } 319 } 320 321 static int mcs7830_mdio_read(struct net_device *netdev, int phy_id, 322 int location) 323 { 324 struct usbnet *dev = netdev_priv(netdev); 325 return mcs7830_read_phy(dev, location); 326 } 327 328 static void mcs7830_mdio_write(struct net_device *netdev, int phy_id, 329 int location, int val) 330 { 331 struct usbnet *dev = netdev_priv(netdev); 332 mcs7830_write_phy(dev, location, val); 333 } 334 335 static int mcs7830_ioctl(struct net_device *net, struct ifreq *rq, int cmd) 336 { 337 struct usbnet *dev = netdev_priv(net); 338 return generic_mii_ioctl(&dev->mii, if_mii(rq), cmd, NULL); 339 } 340 341 static inline struct mcs7830_data *mcs7830_get_data(struct usbnet *dev) 342 { 343 return (struct mcs7830_data *)&dev->data; 344 } 345 346 static void mcs7830_hif_update_multicast_hash(struct usbnet *dev) 347 { 348 struct mcs7830_data *data = mcs7830_get_data(dev); 349 mcs7830_set_reg_async(dev, HIF_REG_MULTICAST_HASH, 350 sizeof data->multi_filter, 351 data->multi_filter); 352 } 353 354 static void mcs7830_hif_update_config(struct usbnet *dev) 355 { 356 /* implementation specific to data->config 357 (argument needs to be heap-based anyway - USB DMA!) */ 358 struct mcs7830_data *data = mcs7830_get_data(dev); 359 mcs7830_set_reg_async(dev, HIF_REG_CONFIG, 1, &data->config); 360 } 361 362 static void mcs7830_data_set_multicast(struct net_device *net) 363 { 364 struct usbnet *dev = netdev_priv(net); 365 struct mcs7830_data *data = mcs7830_get_data(dev); 366 367 memset(data->multi_filter, 0, sizeof data->multi_filter); 368 369 data->config = HIF_REG_CONFIG_TXENABLE; 370 371 /* this should not be needed, but it doesn't work otherwise */ 372 data->config |= HIF_REG_CONFIG_ALLMULTICAST; 373 374 if (net->flags & IFF_PROMISC) { 375 data->config |= HIF_REG_CONFIG_PROMISCUOUS; 376 } else if (net->flags & IFF_ALLMULTI || 377 netdev_mc_count(net) > MCS7830_MAX_MCAST) { 378 data->config |= HIF_REG_CONFIG_ALLMULTICAST; 379 } else if (netdev_mc_empty(net)) { 380 /* just broadcast and directed */ 381 } else { 382 /* We use the 20 byte dev->data 383 * for our 8 byte filter buffer 384 * to avoid allocating memory that 385 * is tricky to free later */ 386 struct netdev_hw_addr *ha; 387 u32 crc_bits; 388 389 /* Build the multicast hash filter. */ 390 netdev_for_each_mc_addr(ha, net) { 391 crc_bits = ether_crc(ETH_ALEN, ha->addr) >> 26; 392 data->multi_filter[crc_bits >> 3] |= 1 << (crc_bits & 7); 393 } 394 } 395 } 396 397 static int mcs7830_apply_base_config(struct usbnet *dev) 398 { 399 int ret; 400 401 /* re-configure known MAC (suspend case etc.) */ 402 ret = mcs7830_hif_set_mac_address(dev, dev->net->dev_addr); 403 if (ret) { 404 dev_info(&dev->udev->dev, "Cannot set MAC address\n"); 405 goto out; 406 } 407 408 /* Set up PHY */ 409 ret = mcs7830_set_autoneg(dev, 0); 410 if (ret) { 411 dev_info(&dev->udev->dev, "Cannot set autoneg\n"); 412 goto out; 413 } 414 415 mcs7830_hif_update_multicast_hash(dev); 416 mcs7830_hif_update_config(dev); 417 418 mcs7830_rev_C_fixup(dev); 419 ret = 0; 420 out: 421 return ret; 422 } 423 424 /* credits go to asix_set_multicast */ 425 static void mcs7830_set_multicast(struct net_device *net) 426 { 427 struct usbnet *dev = netdev_priv(net); 428 429 mcs7830_data_set_multicast(net); 430 431 mcs7830_hif_update_multicast_hash(dev); 432 mcs7830_hif_update_config(dev); 433 } 434 435 static int mcs7830_get_regs_len(struct net_device *net) 436 { 437 struct usbnet *dev = netdev_priv(net); 438 439 switch (mcs7830_get_rev(dev)) { 440 case 1: 441 return 21; 442 case 2: 443 return 32; 444 } 445 return 0; 446 } 447 448 static void mcs7830_get_drvinfo(struct net_device *net, struct ethtool_drvinfo *drvinfo) 449 { 450 usbnet_get_drvinfo(net, drvinfo); 451 drvinfo->regdump_len = mcs7830_get_regs_len(net); 452 } 453 454 static void mcs7830_get_regs(struct net_device *net, struct ethtool_regs *regs, void *data) 455 { 456 struct usbnet *dev = netdev_priv(net); 457 458 regs->version = mcs7830_get_rev(dev); 459 mcs7830_get_reg(dev, 0, regs->len, data); 460 } 461 462 static const struct ethtool_ops mcs7830_ethtool_ops = { 463 .get_drvinfo = mcs7830_get_drvinfo, 464 .get_regs_len = mcs7830_get_regs_len, 465 .get_regs = mcs7830_get_regs, 466 467 /* common usbnet calls */ 468 .get_link = usbnet_get_link, 469 .get_msglevel = usbnet_get_msglevel, 470 .set_msglevel = usbnet_set_msglevel, 471 .get_settings = usbnet_get_settings, 472 .set_settings = usbnet_set_settings, 473 .nway_reset = usbnet_nway_reset, 474 }; 475 476 static const struct net_device_ops mcs7830_netdev_ops = { 477 .ndo_open = usbnet_open, 478 .ndo_stop = usbnet_stop, 479 .ndo_start_xmit = usbnet_start_xmit, 480 .ndo_tx_timeout = usbnet_tx_timeout, 481 .ndo_change_mtu = usbnet_change_mtu, 482 .ndo_validate_addr = eth_validate_addr, 483 .ndo_do_ioctl = mcs7830_ioctl, 484 .ndo_set_rx_mode = mcs7830_set_multicast, 485 .ndo_set_mac_address = mcs7830_set_mac_address, 486 }; 487 488 static int mcs7830_bind(struct usbnet *dev, struct usb_interface *udev) 489 { 490 struct net_device *net = dev->net; 491 int ret; 492 int retry; 493 494 /* Initial startup: Gather MAC address setting from EEPROM */ 495 ret = -EINVAL; 496 for (retry = 0; retry < 5 && ret; retry++) 497 ret = mcs7830_hif_get_mac_address(dev, net->dev_addr); 498 if (ret) { 499 dev_warn(&dev->udev->dev, "Cannot read MAC address\n"); 500 goto out; 501 } 502 503 mcs7830_data_set_multicast(net); 504 505 ret = mcs7830_apply_base_config(dev); 506 if (ret) 507 goto out; 508 509 net->ethtool_ops = &mcs7830_ethtool_ops; 510 net->netdev_ops = &mcs7830_netdev_ops; 511 512 /* reserve space for the status byte on rx */ 513 dev->rx_urb_size = ETH_FRAME_LEN + 1; 514 515 dev->mii.mdio_read = mcs7830_mdio_read; 516 dev->mii.mdio_write = mcs7830_mdio_write; 517 dev->mii.dev = net; 518 dev->mii.phy_id_mask = 0x3f; 519 dev->mii.reg_num_mask = 0x1f; 520 dev->mii.phy_id = *((u8 *) net->dev_addr + 1); 521 522 ret = usbnet_get_endpoints(dev, udev); 523 out: 524 return ret; 525 } 526 527 /* The chip always appends a status byte that we need to strip */ 528 static int mcs7830_rx_fixup(struct usbnet *dev, struct sk_buff *skb) 529 { 530 u8 status; 531 532 if (skb->len == 0) { 533 dev_err(&dev->udev->dev, "unexpected empty rx frame\n"); 534 return 0; 535 } 536 537 skb_trim(skb, skb->len - 1); 538 status = skb->data[skb->len]; 539 540 if (status != MCS7830_RX_FRAME_CORRECT) { 541 dev_dbg(&dev->udev->dev, "rx fixup status %x\n", status); 542 543 /* hmm, perhaps usbnet.c already sees a globally visible 544 frame error and increments rx_errors on its own already? */ 545 dev->net->stats.rx_errors++; 546 547 if (status & (MCS7830_RX_SHORT_FRAME 548 |MCS7830_RX_LENGTH_ERROR 549 |MCS7830_RX_LARGE_FRAME)) 550 dev->net->stats.rx_length_errors++; 551 if (status & MCS7830_RX_ALIGNMENT_ERROR) 552 dev->net->stats.rx_frame_errors++; 553 if (status & MCS7830_RX_CRC_ERROR) 554 dev->net->stats.rx_crc_errors++; 555 } 556 557 return skb->len > 0; 558 } 559 560 static void mcs7830_status(struct usbnet *dev, struct urb *urb) 561 { 562 u8 *buf = urb->transfer_buffer; 563 bool link, link_changed; 564 struct mcs7830_data *data = mcs7830_get_data(dev); 565 566 if (urb->actual_length < 16) 567 return; 568 569 link = !(buf[1] & 0x20); 570 link_changed = netif_carrier_ok(dev->net) != link; 571 if (link_changed) { 572 data->link_counter++; 573 /* 574 track link state 20 times to guard against erroneous 575 link state changes reported sometimes by the chip 576 */ 577 if (data->link_counter > 20) { 578 data->link_counter = 0; 579 usbnet_link_change(dev, link, 0); 580 netdev_dbg(dev->net, "Link Status is: %d\n", link); 581 } 582 } else 583 data->link_counter = 0; 584 } 585 586 static const struct driver_info moschip_info = { 587 .description = "MOSCHIP 7830/7832/7730 usb-NET adapter", 588 .bind = mcs7830_bind, 589 .rx_fixup = mcs7830_rx_fixup, 590 .flags = FLAG_ETHER | FLAG_LINK_INTR, 591 .status = mcs7830_status, 592 .in = 1, 593 .out = 2, 594 }; 595 596 static const struct driver_info sitecom_info = { 597 .description = "Sitecom LN-30 usb-NET adapter", 598 .bind = mcs7830_bind, 599 .rx_fixup = mcs7830_rx_fixup, 600 .flags = FLAG_ETHER | FLAG_LINK_INTR, 601 .status = mcs7830_status, 602 .in = 1, 603 .out = 2, 604 }; 605 606 static const struct usb_device_id products[] = { 607 { 608 USB_DEVICE(MCS7830_VENDOR_ID, MCS7832_PRODUCT_ID), 609 .driver_info = (unsigned long) &moschip_info, 610 }, 611 { 612 USB_DEVICE(MCS7830_VENDOR_ID, MCS7830_PRODUCT_ID), 613 .driver_info = (unsigned long) &moschip_info, 614 }, 615 { 616 USB_DEVICE(MCS7830_VENDOR_ID, MCS7730_PRODUCT_ID), 617 .driver_info = (unsigned long) &moschip_info, 618 }, 619 { 620 USB_DEVICE(SITECOM_VENDOR_ID, LN_030_PRODUCT_ID), 621 .driver_info = (unsigned long) &sitecom_info, 622 }, 623 {}, 624 }; 625 MODULE_DEVICE_TABLE(usb, products); 626 627 static int mcs7830_reset_resume (struct usb_interface *intf) 628 { 629 /* YES, this function is successful enough that ethtool -d 630 does show same output pre-/post-suspend */ 631 632 struct usbnet *dev = usb_get_intfdata(intf); 633 634 mcs7830_apply_base_config(dev); 635 636 usbnet_resume(intf); 637 638 return 0; 639 } 640 641 static struct usb_driver mcs7830_driver = { 642 .name = driver_name, 643 .id_table = products, 644 .probe = usbnet_probe, 645 .disconnect = usbnet_disconnect, 646 .suspend = usbnet_suspend, 647 .resume = usbnet_resume, 648 .reset_resume = mcs7830_reset_resume, 649 .disable_hub_initiated_lpm = 1, 650 }; 651 652 module_usb_driver(mcs7830_driver); 653 654 MODULE_DESCRIPTION("USB to network adapter MCS7830)"); 655 MODULE_LICENSE("GPL"); 656