1 /* 2 * MOSCHIP MCS7830 based 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 * TODO: 15 * - support HIF_REG_CONFIG_SLEEPMODE/HIF_REG_CONFIG_TXENABLE (via autopm?) 16 * - implement ethtool_ops get_pauseparam/set_pauseparam 17 * via HIF_REG_PAUSE_THRESHOLD (>= revision C only!) 18 * - implement get_eeprom/[set_eeprom] 19 * - switch PHY on/off on ifup/ifdown (perhaps in usbnet.c, via MII) 20 * - mcs7830_get_regs() handling is weird: for rev 2 we return 32 regs, 21 * can access only ~ 24, remaining user buffer is uninitialized garbage 22 * - anything else? 23 * 24 * 25 * This program is free software; you can redistribute it and/or modify 26 * it under the terms of the GNU General Public License as published by 27 * the Free Software Foundation; either version 2 of the License, or 28 * (at your option) any later version. 29 * 30 * This program is distributed in the hope that it will be useful, 31 * but WITHOUT ANY WARRANTY; without even the implied warranty of 32 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 33 * GNU General Public License for more details. 34 * 35 * You should have received a copy of the GNU General Public License 36 * along with this program; if not, write to the Free Software 37 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 38 */ 39 40 #include <linux/crc32.h> 41 #include <linux/etherdevice.h> 42 #include <linux/ethtool.h> 43 #include <linux/init.h> 44 #include <linux/mii.h> 45 #include <linux/module.h> 46 #include <linux/netdevice.h> 47 #include <linux/slab.h> 48 #include <linux/usb.h> 49 #include <linux/usb/usbnet.h> 50 51 /* requests */ 52 #define MCS7830_RD_BMREQ (USB_DIR_IN | USB_TYPE_VENDOR | \ 53 USB_RECIP_DEVICE) 54 #define MCS7830_WR_BMREQ (USB_DIR_OUT | USB_TYPE_VENDOR | \ 55 USB_RECIP_DEVICE) 56 #define MCS7830_RD_BREQ 0x0E 57 #define MCS7830_WR_BREQ 0x0D 58 59 #define MCS7830_CTRL_TIMEOUT 1000 60 #define MCS7830_MAX_MCAST 64 61 62 #define MCS7830_VENDOR_ID 0x9710 63 #define MCS7830_PRODUCT_ID 0x7830 64 #define MCS7730_PRODUCT_ID 0x7730 65 66 #define SITECOM_VENDOR_ID 0x0DF6 67 #define LN_030_PRODUCT_ID 0x0021 68 69 #define MCS7830_MII_ADVERTISE (ADVERTISE_PAUSE_CAP | ADVERTISE_100FULL | \ 70 ADVERTISE_100HALF | ADVERTISE_10FULL | \ 71 ADVERTISE_10HALF | ADVERTISE_CSMA) 72 73 /* HIF_REG_XX corresponding index value */ 74 enum { 75 HIF_REG_MULTICAST_HASH = 0x00, 76 HIF_REG_PACKET_GAP1 = 0x08, 77 HIF_REG_PACKET_GAP2 = 0x09, 78 HIF_REG_PHY_DATA = 0x0a, 79 HIF_REG_PHY_CMD1 = 0x0c, 80 HIF_REG_PHY_CMD1_READ = 0x40, 81 HIF_REG_PHY_CMD1_WRITE = 0x20, 82 HIF_REG_PHY_CMD1_PHYADDR = 0x01, 83 HIF_REG_PHY_CMD2 = 0x0d, 84 HIF_REG_PHY_CMD2_PEND_FLAG_BIT = 0x80, 85 HIF_REG_PHY_CMD2_READY_FLAG_BIT = 0x40, 86 HIF_REG_CONFIG = 0x0e, 87 /* hmm, spec sez: "R/W", "Except bit 3" (likely TXENABLE). */ 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_PROMISCUOUS = 0x01, 96 HIF_REG_ETHERNET_ADDR = 0x0f, 97 HIF_REG_FRAME_DROP_COUNTER = 0x15, /* 0..ff; reset: 0 */ 98 HIF_REG_PAUSE_THRESHOLD = 0x16, 99 HIF_REG_PAUSE_THRESHOLD_DEFAULT = 0, 100 }; 101 102 /* 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 }; 112 113 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; 124 void *buffer; 125 126 buffer = kmalloc(size, GFP_NOIO); 127 if (buffer == NULL) 128 return -ENOMEM; 129 130 ret = usb_control_msg(xdev, usb_rcvctrlpipe(xdev, 0), MCS7830_RD_BREQ, 131 MCS7830_RD_BMREQ, 0x0000, index, buffer, 132 size, MCS7830_CTRL_TIMEOUT); 133 memcpy(data, buffer, size); 134 kfree(buffer); 135 136 return ret; 137 } 138 139 static int mcs7830_set_reg(struct usbnet *dev, u16 index, u16 size, const void *data) 140 { 141 struct usb_device *xdev = dev->udev; 142 int ret; 143 void *buffer; 144 145 buffer = kmalloc(size, GFP_NOIO); 146 if (buffer == NULL) 147 return -ENOMEM; 148 149 memcpy(buffer, data, size); 150 151 ret = usb_control_msg(xdev, usb_sndctrlpipe(xdev, 0), MCS7830_WR_BREQ, 152 MCS7830_WR_BMREQ, 0x0000, index, buffer, 153 size, MCS7830_CTRL_TIMEOUT); 154 kfree(buffer); 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; 161 int status = urb->status; 162 163 if (status < 0) 164 printk(KERN_DEBUG "%s() failed with %d\n", 165 __func__, status); 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) { 179 dev_dbg(&dev->udev->dev, 180 "Error allocating URB in write_cmd_async!\n"); 181 return; 182 } 183 184 req = kmalloc(sizeof *req, GFP_ATOMIC); 185 if (!req) { 186 dev_err(&dev->udev->dev, 187 "Failed to allocate memory for control request\n"); 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) { 203 dev_err(&dev->udev->dev, 204 "Error submitting the control message: ret=%d\n", ret); 205 goto out; 206 } 207 return; 208 out: 209 kfree(req); 210 usb_free_urb(urb); 211 } 212 213 static int mcs7830_hif_get_mac_address(struct usbnet *dev, unsigned char *addr) 214 { 215 int ret = mcs7830_get_reg(dev, HIF_REG_ETHERNET_ADDR, ETH_ALEN, addr); 216 if (ret < 0) 217 return ret; 218 return 0; 219 } 220 221 static int mcs7830_hif_set_mac_address(struct usbnet *dev, unsigned char *addr) 222 { 223 int ret = mcs7830_set_reg(dev, HIF_REG_ETHERNET_ADDR, ETH_ALEN, addr); 224 225 if (ret < 0) 226 return ret; 227 return 0; 228 } 229 230 static int mcs7830_set_mac_address(struct net_device *netdev, void *p) 231 { 232 int ret; 233 struct usbnet *dev = netdev_priv(netdev); 234 struct sockaddr *addr = p; 235 236 if (netif_running(netdev)) 237 return -EBUSY; 238 239 if (!is_valid_ether_addr(addr->sa_data)) 240 return -EINVAL; 241 242 ret = mcs7830_hif_set_mac_address(dev, addr->sa_data); 243 244 if (ret < 0) 245 return ret; 246 247 /* it worked --> adopt it on netdev side */ 248 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); 249 250 return 0; 251 } 252 253 static int mcs7830_read_phy(struct usbnet *dev, u8 index) 254 { 255 int ret; 256 int i; 257 __le16 val; 258 259 u8 cmd[2] = { 260 HIF_REG_PHY_CMD1_READ | HIF_REG_PHY_CMD1_PHYADDR, 261 HIF_REG_PHY_CMD2_PEND_FLAG_BIT | index, 262 }; 263 264 mutex_lock(&dev->phy_mutex); 265 /* write the MII command */ 266 ret = mcs7830_set_reg(dev, HIF_REG_PHY_CMD1, 2, cmd); 267 if (ret < 0) 268 goto out; 269 270 /* wait for the data to become valid, should be within < 1ms */ 271 for (i = 0; i < 10; i++) { 272 ret = mcs7830_get_reg(dev, HIF_REG_PHY_CMD1, 2, cmd); 273 if ((ret < 0) || (cmd[1] & HIF_REG_PHY_CMD2_READY_FLAG_BIT)) 274 break; 275 ret = -EIO; 276 msleep(1); 277 } 278 if (ret < 0) 279 goto out; 280 281 /* read actual register contents */ 282 ret = mcs7830_get_reg(dev, HIF_REG_PHY_DATA, 2, &val); 283 if (ret < 0) 284 goto out; 285 ret = le16_to_cpu(val); 286 dev_dbg(&dev->udev->dev, "read PHY reg %02x: %04x (%d tries)\n", 287 index, val, i); 288 out: 289 mutex_unlock(&dev->phy_mutex); 290 return ret; 291 } 292 293 static int mcs7830_write_phy(struct usbnet *dev, u8 index, u16 val) 294 { 295 int ret; 296 int i; 297 __le16 le_val; 298 299 u8 cmd[2] = { 300 HIF_REG_PHY_CMD1_WRITE | HIF_REG_PHY_CMD1_PHYADDR, 301 HIF_REG_PHY_CMD2_PEND_FLAG_BIT | (index & 0x1F), 302 }; 303 304 mutex_lock(&dev->phy_mutex); 305 306 /* write the new register contents */ 307 le_val = cpu_to_le16(val); 308 ret = mcs7830_set_reg(dev, HIF_REG_PHY_DATA, 2, &le_val); 309 if (ret < 0) 310 goto out; 311 312 /* write the MII command */ 313 ret = mcs7830_set_reg(dev, HIF_REG_PHY_CMD1, 2, cmd); 314 if (ret < 0) 315 goto out; 316 317 /* wait for the command to be accepted by the PHY */ 318 for (i = 0; i < 10; i++) { 319 ret = mcs7830_get_reg(dev, HIF_REG_PHY_CMD1, 2, cmd); 320 if ((ret < 0) || (cmd[1] & HIF_REG_PHY_CMD2_READY_FLAG_BIT)) 321 break; 322 ret = -EIO; 323 msleep(1); 324 } 325 if (ret < 0) 326 goto out; 327 328 ret = 0; 329 dev_dbg(&dev->udev->dev, "write PHY reg %02x: %04x (%d tries)\n", 330 index, val, i); 331 out: 332 mutex_unlock(&dev->phy_mutex); 333 return ret; 334 } 335 336 /* 337 * This algorithm comes from the original mcs7830 version 1.4 driver, 338 * not sure if it is needed. 339 */ 340 static int mcs7830_set_autoneg(struct usbnet *dev, int ptrUserPhyMode) 341 { 342 int ret; 343 /* Enable all media types */ 344 ret = mcs7830_write_phy(dev, MII_ADVERTISE, MCS7830_MII_ADVERTISE); 345 346 /* First reset BMCR */ 347 if (!ret) 348 ret = mcs7830_write_phy(dev, MII_BMCR, 0x0000); 349 /* Enable Auto Neg */ 350 if (!ret) 351 ret = mcs7830_write_phy(dev, MII_BMCR, BMCR_ANENABLE); 352 /* Restart Auto Neg (Keep the Enable Auto Neg Bit Set) */ 353 if (!ret) 354 ret = mcs7830_write_phy(dev, MII_BMCR, 355 BMCR_ANENABLE | BMCR_ANRESTART ); 356 return ret < 0 ? : 0; 357 } 358 359 360 /* 361 * if we can read register 22, the chip revision is C or higher 362 */ 363 static int mcs7830_get_rev(struct usbnet *dev) 364 { 365 u8 dummy[2]; 366 int ret; 367 ret = mcs7830_get_reg(dev, HIF_REG_FRAME_DROP_COUNTER, 2, dummy); 368 if (ret > 0) 369 return 2; /* Rev C or later */ 370 return 1; /* earlier revision */ 371 } 372 373 /* 374 * On rev. C we need to set the pause threshold 375 */ 376 static void mcs7830_rev_C_fixup(struct usbnet *dev) 377 { 378 u8 pause_threshold = HIF_REG_PAUSE_THRESHOLD_DEFAULT; 379 int retry; 380 381 for (retry = 0; retry < 2; retry++) { 382 if (mcs7830_get_rev(dev) == 2) { 383 dev_info(&dev->udev->dev, "applying rev.C fixup\n"); 384 mcs7830_set_reg(dev, HIF_REG_PAUSE_THRESHOLD, 385 1, &pause_threshold); 386 } 387 msleep(1); 388 } 389 } 390 391 static int mcs7830_mdio_read(struct net_device *netdev, int phy_id, 392 int location) 393 { 394 struct usbnet *dev = netdev_priv(netdev); 395 return mcs7830_read_phy(dev, location); 396 } 397 398 static void mcs7830_mdio_write(struct net_device *netdev, int phy_id, 399 int location, int val) 400 { 401 struct usbnet *dev = netdev_priv(netdev); 402 mcs7830_write_phy(dev, location, val); 403 } 404 405 static int mcs7830_ioctl(struct net_device *net, struct ifreq *rq, int cmd) 406 { 407 struct usbnet *dev = netdev_priv(net); 408 return generic_mii_ioctl(&dev->mii, if_mii(rq), cmd, NULL); 409 } 410 411 static inline struct mcs7830_data *mcs7830_get_data(struct usbnet *dev) 412 { 413 return (struct mcs7830_data *)&dev->data; 414 } 415 416 static void mcs7830_hif_update_multicast_hash(struct usbnet *dev) 417 { 418 struct mcs7830_data *data = mcs7830_get_data(dev); 419 mcs7830_set_reg_async(dev, HIF_REG_MULTICAST_HASH, 420 sizeof data->multi_filter, 421 data->multi_filter); 422 } 423 424 static void mcs7830_hif_update_config(struct usbnet *dev) 425 { 426 /* implementation specific to data->config 427 (argument needs to be heap-based anyway - USB DMA!) */ 428 struct mcs7830_data *data = mcs7830_get_data(dev); 429 mcs7830_set_reg_async(dev, HIF_REG_CONFIG, 1, &data->config); 430 } 431 432 static void mcs7830_data_set_multicast(struct net_device *net) 433 { 434 struct usbnet *dev = netdev_priv(net); 435 struct mcs7830_data *data = mcs7830_get_data(dev); 436 437 memset(data->multi_filter, 0, sizeof data->multi_filter); 438 439 data->config = HIF_REG_CONFIG_TXENABLE; 440 441 /* this should not be needed, but it doesn't work otherwise */ 442 data->config |= HIF_REG_CONFIG_ALLMULTICAST; 443 444 if (net->flags & IFF_PROMISC) { 445 data->config |= HIF_REG_CONFIG_PROMISCUOUS; 446 } else if (net->flags & IFF_ALLMULTI || 447 netdev_mc_count(net) > MCS7830_MAX_MCAST) { 448 data->config |= HIF_REG_CONFIG_ALLMULTICAST; 449 } else if (netdev_mc_empty(net)) { 450 /* just broadcast and directed */ 451 } else { 452 /* We use the 20 byte dev->data 453 * for our 8 byte filter buffer 454 * to avoid allocating memory that 455 * is tricky to free later */ 456 struct dev_mc_list *mc_list; 457 u32 crc_bits; 458 459 /* Build the multicast hash filter. */ 460 netdev_for_each_mc_addr(mc_list, net) { 461 crc_bits = ether_crc(ETH_ALEN, mc_list->dmi_addr) >> 26; 462 data->multi_filter[crc_bits >> 3] |= 1 << (crc_bits & 7); 463 } 464 } 465 } 466 467 static int mcs7830_apply_base_config(struct usbnet *dev) 468 { 469 int ret; 470 471 /* re-configure known MAC (suspend case etc.) */ 472 ret = mcs7830_hif_set_mac_address(dev, dev->net->dev_addr); 473 if (ret) { 474 dev_info(&dev->udev->dev, "Cannot set MAC address\n"); 475 goto out; 476 } 477 478 /* Set up PHY */ 479 ret = mcs7830_set_autoneg(dev, 0); 480 if (ret) { 481 dev_info(&dev->udev->dev, "Cannot set autoneg\n"); 482 goto out; 483 } 484 485 mcs7830_hif_update_multicast_hash(dev); 486 mcs7830_hif_update_config(dev); 487 488 mcs7830_rev_C_fixup(dev); 489 ret = 0; 490 out: 491 return ret; 492 } 493 494 /* credits go to asix_set_multicast */ 495 static void mcs7830_set_multicast(struct net_device *net) 496 { 497 struct usbnet *dev = netdev_priv(net); 498 499 mcs7830_data_set_multicast(net); 500 501 mcs7830_hif_update_multicast_hash(dev); 502 mcs7830_hif_update_config(dev); 503 } 504 505 static int mcs7830_get_regs_len(struct net_device *net) 506 { 507 struct usbnet *dev = netdev_priv(net); 508 509 switch (mcs7830_get_rev(dev)) { 510 case 1: 511 return 21; 512 case 2: 513 return 32; 514 } 515 return 0; 516 } 517 518 static void mcs7830_get_drvinfo(struct net_device *net, struct ethtool_drvinfo *drvinfo) 519 { 520 usbnet_get_drvinfo(net, drvinfo); 521 drvinfo->regdump_len = mcs7830_get_regs_len(net); 522 } 523 524 static void mcs7830_get_regs(struct net_device *net, struct ethtool_regs *regs, void *data) 525 { 526 struct usbnet *dev = netdev_priv(net); 527 528 regs->version = mcs7830_get_rev(dev); 529 mcs7830_get_reg(dev, 0, regs->len, data); 530 } 531 532 static const struct ethtool_ops mcs7830_ethtool_ops = { 533 .get_drvinfo = mcs7830_get_drvinfo, 534 .get_regs_len = mcs7830_get_regs_len, 535 .get_regs = mcs7830_get_regs, 536 537 /* common usbnet calls */ 538 .get_link = usbnet_get_link, 539 .get_msglevel = usbnet_get_msglevel, 540 .set_msglevel = usbnet_set_msglevel, 541 .get_settings = usbnet_get_settings, 542 .set_settings = usbnet_set_settings, 543 .nway_reset = usbnet_nway_reset, 544 }; 545 546 static const struct net_device_ops mcs7830_netdev_ops = { 547 .ndo_open = usbnet_open, 548 .ndo_stop = usbnet_stop, 549 .ndo_start_xmit = usbnet_start_xmit, 550 .ndo_tx_timeout = usbnet_tx_timeout, 551 .ndo_change_mtu = usbnet_change_mtu, 552 .ndo_validate_addr = eth_validate_addr, 553 .ndo_do_ioctl = mcs7830_ioctl, 554 .ndo_set_multicast_list = mcs7830_set_multicast, 555 .ndo_set_mac_address = mcs7830_set_mac_address, 556 }; 557 558 static int mcs7830_bind(struct usbnet *dev, struct usb_interface *udev) 559 { 560 struct net_device *net = dev->net; 561 int ret; 562 int retry; 563 564 /* Initial startup: Gather MAC address setting from EEPROM */ 565 ret = -EINVAL; 566 for (retry = 0; retry < 5 && ret; retry++) 567 ret = mcs7830_hif_get_mac_address(dev, net->dev_addr); 568 if (ret) { 569 dev_warn(&dev->udev->dev, "Cannot read MAC address\n"); 570 goto out; 571 } 572 573 mcs7830_data_set_multicast(net); 574 575 ret = mcs7830_apply_base_config(dev); 576 if (ret) 577 goto out; 578 579 net->ethtool_ops = &mcs7830_ethtool_ops; 580 net->netdev_ops = &mcs7830_netdev_ops; 581 582 /* reserve space for the status byte on rx */ 583 dev->rx_urb_size = ETH_FRAME_LEN + 1; 584 585 dev->mii.mdio_read = mcs7830_mdio_read; 586 dev->mii.mdio_write = mcs7830_mdio_write; 587 dev->mii.dev = net; 588 dev->mii.phy_id_mask = 0x3f; 589 dev->mii.reg_num_mask = 0x1f; 590 dev->mii.phy_id = *((u8 *) net->dev_addr + 1); 591 592 ret = usbnet_get_endpoints(dev, udev); 593 out: 594 return ret; 595 } 596 597 /* The chip always appends a status byte that we need to strip */ 598 static int mcs7830_rx_fixup(struct usbnet *dev, struct sk_buff *skb) 599 { 600 u8 status; 601 602 if (skb->len == 0) { 603 dev_err(&dev->udev->dev, "unexpected empty rx frame\n"); 604 return 0; 605 } 606 607 skb_trim(skb, skb->len - 1); 608 status = skb->data[skb->len]; 609 610 if (status != MCS7830_RX_FRAME_CORRECT) { 611 dev_dbg(&dev->udev->dev, "rx fixup status %x\n", status); 612 613 /* hmm, perhaps usbnet.c already sees a globally visible 614 frame error and increments rx_errors on its own already? */ 615 dev->net->stats.rx_errors++; 616 617 if (status & (MCS7830_RX_SHORT_FRAME 618 |MCS7830_RX_LENGTH_ERROR 619 |MCS7830_RX_LARGE_FRAME)) 620 dev->net->stats.rx_length_errors++; 621 if (status & MCS7830_RX_ALIGNMENT_ERROR) 622 dev->net->stats.rx_frame_errors++; 623 if (status & MCS7830_RX_CRC_ERROR) 624 dev->net->stats.rx_crc_errors++; 625 } 626 627 return skb->len > 0; 628 } 629 630 static const struct driver_info moschip_info = { 631 .description = "MOSCHIP 7830/7730 usb-NET adapter", 632 .bind = mcs7830_bind, 633 .rx_fixup = mcs7830_rx_fixup, 634 .flags = FLAG_ETHER, 635 .in = 1, 636 .out = 2, 637 }; 638 639 static const struct driver_info sitecom_info = { 640 .description = "Sitecom LN-30 usb-NET adapter", 641 .bind = mcs7830_bind, 642 .rx_fixup = mcs7830_rx_fixup, 643 .flags = FLAG_ETHER, 644 .in = 1, 645 .out = 2, 646 }; 647 648 static const struct usb_device_id products[] = { 649 { 650 USB_DEVICE(MCS7830_VENDOR_ID, MCS7830_PRODUCT_ID), 651 .driver_info = (unsigned long) &moschip_info, 652 }, 653 { 654 USB_DEVICE(MCS7830_VENDOR_ID, MCS7730_PRODUCT_ID), 655 .driver_info = (unsigned long) &moschip_info, 656 }, 657 { 658 USB_DEVICE(SITECOM_VENDOR_ID, LN_030_PRODUCT_ID), 659 .driver_info = (unsigned long) &sitecom_info, 660 }, 661 {}, 662 }; 663 MODULE_DEVICE_TABLE(usb, products); 664 665 static int mcs7830_reset_resume (struct usb_interface *intf) 666 { 667 /* YES, this function is successful enough that ethtool -d 668 does show same output pre-/post-suspend */ 669 670 struct usbnet *dev = usb_get_intfdata(intf); 671 672 mcs7830_apply_base_config(dev); 673 674 usbnet_resume(intf); 675 676 return 0; 677 } 678 679 static struct usb_driver mcs7830_driver = { 680 .name = driver_name, 681 .id_table = products, 682 .probe = usbnet_probe, 683 .disconnect = usbnet_disconnect, 684 .suspend = usbnet_suspend, 685 .resume = usbnet_resume, 686 .reset_resume = mcs7830_reset_resume, 687 }; 688 689 static int __init mcs7830_init(void) 690 { 691 return usb_register(&mcs7830_driver); 692 } 693 module_init(mcs7830_init); 694 695 static void __exit mcs7830_exit(void) 696 { 697 usb_deregister(&mcs7830_driver); 698 } 699 module_exit(mcs7830_exit); 700 701 MODULE_DESCRIPTION("USB to network adapter MCS7830)"); 702 MODULE_LICENSE("GPL"); 703