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 }; 121 122 static const char driver_name[] = "MOSCHIP usb-ethernet driver"; 123 124 static int mcs7830_get_reg(struct usbnet *dev, u16 index, u16 size, void *data) 125 { 126 struct usb_device *xdev = dev->udev; 127 int ret; 128 void *buffer; 129 130 buffer = kmalloc(size, GFP_NOIO); 131 if (buffer == NULL) 132 return -ENOMEM; 133 134 ret = usb_control_msg(xdev, usb_rcvctrlpipe(xdev, 0), MCS7830_RD_BREQ, 135 MCS7830_RD_BMREQ, 0x0000, index, buffer, 136 size, MCS7830_CTRL_TIMEOUT); 137 memcpy(data, buffer, size); 138 kfree(buffer); 139 140 return ret; 141 } 142 143 static int mcs7830_set_reg(struct usbnet *dev, u16 index, u16 size, const void *data) 144 { 145 struct usb_device *xdev = dev->udev; 146 int ret; 147 void *buffer; 148 149 buffer = kmemdup(data, size, GFP_NOIO); 150 if (buffer == NULL) 151 return -ENOMEM; 152 153 ret = usb_control_msg(xdev, usb_sndctrlpipe(xdev, 0), MCS7830_WR_BREQ, 154 MCS7830_WR_BMREQ, 0x0000, index, buffer, 155 size, MCS7830_CTRL_TIMEOUT); 156 kfree(buffer); 157 return ret; 158 } 159 160 static void mcs7830_async_cmd_callback(struct urb *urb) 161 { 162 struct usb_ctrlrequest *req = (struct usb_ctrlrequest *)urb->context; 163 int status = urb->status; 164 165 if (status < 0) 166 printk(KERN_DEBUG "%s() failed with %d\n", 167 __func__, status); 168 169 kfree(req); 170 usb_free_urb(urb); 171 } 172 173 static void mcs7830_set_reg_async(struct usbnet *dev, u16 index, u16 size, void *data) 174 { 175 struct usb_ctrlrequest *req; 176 int ret; 177 struct urb *urb; 178 179 urb = usb_alloc_urb(0, GFP_ATOMIC); 180 if (!urb) { 181 dev_dbg(&dev->udev->dev, 182 "Error allocating URB in write_cmd_async!\n"); 183 return; 184 } 185 186 req = kmalloc(sizeof *req, GFP_ATOMIC); 187 if (!req) { 188 dev_err(&dev->udev->dev, 189 "Failed to allocate memory for control request\n"); 190 goto out; 191 } 192 req->bRequestType = MCS7830_WR_BMREQ; 193 req->bRequest = MCS7830_WR_BREQ; 194 req->wValue = 0; 195 req->wIndex = cpu_to_le16(index); 196 req->wLength = cpu_to_le16(size); 197 198 usb_fill_control_urb(urb, dev->udev, 199 usb_sndctrlpipe(dev->udev, 0), 200 (void *)req, data, size, 201 mcs7830_async_cmd_callback, req); 202 203 ret = usb_submit_urb(urb, GFP_ATOMIC); 204 if (ret < 0) { 205 dev_err(&dev->udev->dev, 206 "Error submitting the control message: ret=%d\n", ret); 207 goto out; 208 } 209 return; 210 out: 211 kfree(req); 212 usb_free_urb(urb); 213 } 214 215 static int mcs7830_hif_get_mac_address(struct usbnet *dev, unsigned char *addr) 216 { 217 int ret = mcs7830_get_reg(dev, HIF_REG_ETHERNET_ADDR, ETH_ALEN, addr); 218 if (ret < 0) 219 return ret; 220 return 0; 221 } 222 223 static int mcs7830_hif_set_mac_address(struct usbnet *dev, unsigned char *addr) 224 { 225 int ret = mcs7830_set_reg(dev, HIF_REG_ETHERNET_ADDR, ETH_ALEN, addr); 226 227 if (ret < 0) 228 return ret; 229 return 0; 230 } 231 232 static int mcs7830_set_mac_address(struct net_device *netdev, void *p) 233 { 234 int ret; 235 struct usbnet *dev = netdev_priv(netdev); 236 struct sockaddr *addr = p; 237 238 if (netif_running(netdev)) 239 return -EBUSY; 240 241 if (!is_valid_ether_addr(addr->sa_data)) 242 return -EINVAL; 243 244 ret = mcs7830_hif_set_mac_address(dev, addr->sa_data); 245 246 if (ret < 0) 247 return ret; 248 249 /* it worked --> adopt it on netdev side */ 250 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); 251 252 return 0; 253 } 254 255 static int mcs7830_read_phy(struct usbnet *dev, u8 index) 256 { 257 int ret; 258 int i; 259 __le16 val; 260 261 u8 cmd[2] = { 262 HIF_REG_PHY_CMD1_READ | HIF_REG_PHY_CMD1_PHYADDR, 263 HIF_REG_PHY_CMD2_PEND_FLAG_BIT | index, 264 }; 265 266 mutex_lock(&dev->phy_mutex); 267 /* write the MII command */ 268 ret = mcs7830_set_reg(dev, HIF_REG_PHY_CMD1, 2, cmd); 269 if (ret < 0) 270 goto out; 271 272 /* wait for the data to become valid, should be within < 1ms */ 273 for (i = 0; i < 10; i++) { 274 ret = mcs7830_get_reg(dev, HIF_REG_PHY_CMD1, 2, cmd); 275 if ((ret < 0) || (cmd[1] & HIF_REG_PHY_CMD2_READY_FLAG_BIT)) 276 break; 277 ret = -EIO; 278 msleep(1); 279 } 280 if (ret < 0) 281 goto out; 282 283 /* read actual register contents */ 284 ret = mcs7830_get_reg(dev, HIF_REG_PHY_DATA, 2, &val); 285 if (ret < 0) 286 goto out; 287 ret = le16_to_cpu(val); 288 dev_dbg(&dev->udev->dev, "read PHY reg %02x: %04x (%d tries)\n", 289 index, val, i); 290 out: 291 mutex_unlock(&dev->phy_mutex); 292 return ret; 293 } 294 295 static int mcs7830_write_phy(struct usbnet *dev, u8 index, u16 val) 296 { 297 int ret; 298 int i; 299 __le16 le_val; 300 301 u8 cmd[2] = { 302 HIF_REG_PHY_CMD1_WRITE | HIF_REG_PHY_CMD1_PHYADDR, 303 HIF_REG_PHY_CMD2_PEND_FLAG_BIT | (index & 0x1F), 304 }; 305 306 mutex_lock(&dev->phy_mutex); 307 308 /* write the new register contents */ 309 le_val = cpu_to_le16(val); 310 ret = mcs7830_set_reg(dev, HIF_REG_PHY_DATA, 2, &le_val); 311 if (ret < 0) 312 goto out; 313 314 /* write the MII command */ 315 ret = mcs7830_set_reg(dev, HIF_REG_PHY_CMD1, 2, cmd); 316 if (ret < 0) 317 goto out; 318 319 /* wait for the command to be accepted by the PHY */ 320 for (i = 0; i < 10; i++) { 321 ret = mcs7830_get_reg(dev, HIF_REG_PHY_CMD1, 2, cmd); 322 if ((ret < 0) || (cmd[1] & HIF_REG_PHY_CMD2_READY_FLAG_BIT)) 323 break; 324 ret = -EIO; 325 msleep(1); 326 } 327 if (ret < 0) 328 goto out; 329 330 ret = 0; 331 dev_dbg(&dev->udev->dev, "write PHY reg %02x: %04x (%d tries)\n", 332 index, val, i); 333 out: 334 mutex_unlock(&dev->phy_mutex); 335 return ret; 336 } 337 338 /* 339 * This algorithm comes from the original mcs7830 version 1.4 driver, 340 * not sure if it is needed. 341 */ 342 static int mcs7830_set_autoneg(struct usbnet *dev, int ptrUserPhyMode) 343 { 344 int ret; 345 /* Enable all media types */ 346 ret = mcs7830_write_phy(dev, MII_ADVERTISE, MCS7830_MII_ADVERTISE); 347 348 /* First reset BMCR */ 349 if (!ret) 350 ret = mcs7830_write_phy(dev, MII_BMCR, 0x0000); 351 /* Enable Auto Neg */ 352 if (!ret) 353 ret = mcs7830_write_phy(dev, MII_BMCR, BMCR_ANENABLE); 354 /* Restart Auto Neg (Keep the Enable Auto Neg Bit Set) */ 355 if (!ret) 356 ret = mcs7830_write_phy(dev, MII_BMCR, 357 BMCR_ANENABLE | BMCR_ANRESTART ); 358 return ret; 359 } 360 361 362 /* 363 * if we can read register 22, the chip revision is C or higher 364 */ 365 static int mcs7830_get_rev(struct usbnet *dev) 366 { 367 u8 dummy[2]; 368 int ret; 369 ret = mcs7830_get_reg(dev, HIF_REG_FRAME_DROP_COUNTER, 2, dummy); 370 if (ret > 0) 371 return 2; /* Rev C or later */ 372 return 1; /* earlier revision */ 373 } 374 375 /* 376 * On rev. C we need to set the pause threshold 377 */ 378 static void mcs7830_rev_C_fixup(struct usbnet *dev) 379 { 380 u8 pause_threshold = HIF_REG_PAUSE_THRESHOLD_DEFAULT; 381 int retry; 382 383 for (retry = 0; retry < 2; retry++) { 384 if (mcs7830_get_rev(dev) == 2) { 385 dev_info(&dev->udev->dev, "applying rev.C fixup\n"); 386 mcs7830_set_reg(dev, HIF_REG_PAUSE_THRESHOLD, 387 1, &pause_threshold); 388 } 389 msleep(1); 390 } 391 } 392 393 static int mcs7830_mdio_read(struct net_device *netdev, int phy_id, 394 int location) 395 { 396 struct usbnet *dev = netdev_priv(netdev); 397 return mcs7830_read_phy(dev, location); 398 } 399 400 static void mcs7830_mdio_write(struct net_device *netdev, int phy_id, 401 int location, int val) 402 { 403 struct usbnet *dev = netdev_priv(netdev); 404 mcs7830_write_phy(dev, location, val); 405 } 406 407 static int mcs7830_ioctl(struct net_device *net, struct ifreq *rq, int cmd) 408 { 409 struct usbnet *dev = netdev_priv(net); 410 return generic_mii_ioctl(&dev->mii, if_mii(rq), cmd, NULL); 411 } 412 413 static inline struct mcs7830_data *mcs7830_get_data(struct usbnet *dev) 414 { 415 return (struct mcs7830_data *)&dev->data; 416 } 417 418 static void mcs7830_hif_update_multicast_hash(struct usbnet *dev) 419 { 420 struct mcs7830_data *data = mcs7830_get_data(dev); 421 mcs7830_set_reg_async(dev, HIF_REG_MULTICAST_HASH, 422 sizeof data->multi_filter, 423 data->multi_filter); 424 } 425 426 static void mcs7830_hif_update_config(struct usbnet *dev) 427 { 428 /* implementation specific to data->config 429 (argument needs to be heap-based anyway - USB DMA!) */ 430 struct mcs7830_data *data = mcs7830_get_data(dev); 431 mcs7830_set_reg_async(dev, HIF_REG_CONFIG, 1, &data->config); 432 } 433 434 static void mcs7830_data_set_multicast(struct net_device *net) 435 { 436 struct usbnet *dev = netdev_priv(net); 437 struct mcs7830_data *data = mcs7830_get_data(dev); 438 439 memset(data->multi_filter, 0, sizeof data->multi_filter); 440 441 data->config = HIF_REG_CONFIG_TXENABLE; 442 443 /* this should not be needed, but it doesn't work otherwise */ 444 data->config |= HIF_REG_CONFIG_ALLMULTICAST; 445 446 if (net->flags & IFF_PROMISC) { 447 data->config |= HIF_REG_CONFIG_PROMISCUOUS; 448 } else if (net->flags & IFF_ALLMULTI || 449 netdev_mc_count(net) > MCS7830_MAX_MCAST) { 450 data->config |= HIF_REG_CONFIG_ALLMULTICAST; 451 } else if (netdev_mc_empty(net)) { 452 /* just broadcast and directed */ 453 } else { 454 /* We use the 20 byte dev->data 455 * for our 8 byte filter buffer 456 * to avoid allocating memory that 457 * is tricky to free later */ 458 struct netdev_hw_addr *ha; 459 u32 crc_bits; 460 461 /* Build the multicast hash filter. */ 462 netdev_for_each_mc_addr(ha, net) { 463 crc_bits = ether_crc(ETH_ALEN, ha->addr) >> 26; 464 data->multi_filter[crc_bits >> 3] |= 1 << (crc_bits & 7); 465 } 466 } 467 } 468 469 static int mcs7830_apply_base_config(struct usbnet *dev) 470 { 471 int ret; 472 473 /* re-configure known MAC (suspend case etc.) */ 474 ret = mcs7830_hif_set_mac_address(dev, dev->net->dev_addr); 475 if (ret) { 476 dev_info(&dev->udev->dev, "Cannot set MAC address\n"); 477 goto out; 478 } 479 480 /* Set up PHY */ 481 ret = mcs7830_set_autoneg(dev, 0); 482 if (ret) { 483 dev_info(&dev->udev->dev, "Cannot set autoneg\n"); 484 goto out; 485 } 486 487 mcs7830_hif_update_multicast_hash(dev); 488 mcs7830_hif_update_config(dev); 489 490 mcs7830_rev_C_fixup(dev); 491 ret = 0; 492 out: 493 return ret; 494 } 495 496 /* credits go to asix_set_multicast */ 497 static void mcs7830_set_multicast(struct net_device *net) 498 { 499 struct usbnet *dev = netdev_priv(net); 500 501 mcs7830_data_set_multicast(net); 502 503 mcs7830_hif_update_multicast_hash(dev); 504 mcs7830_hif_update_config(dev); 505 } 506 507 static int mcs7830_get_regs_len(struct net_device *net) 508 { 509 struct usbnet *dev = netdev_priv(net); 510 511 switch (mcs7830_get_rev(dev)) { 512 case 1: 513 return 21; 514 case 2: 515 return 32; 516 } 517 return 0; 518 } 519 520 static void mcs7830_get_drvinfo(struct net_device *net, struct ethtool_drvinfo *drvinfo) 521 { 522 usbnet_get_drvinfo(net, drvinfo); 523 drvinfo->regdump_len = mcs7830_get_regs_len(net); 524 } 525 526 static void mcs7830_get_regs(struct net_device *net, struct ethtool_regs *regs, void *data) 527 { 528 struct usbnet *dev = netdev_priv(net); 529 530 regs->version = mcs7830_get_rev(dev); 531 mcs7830_get_reg(dev, 0, regs->len, data); 532 } 533 534 static const struct ethtool_ops mcs7830_ethtool_ops = { 535 .get_drvinfo = mcs7830_get_drvinfo, 536 .get_regs_len = mcs7830_get_regs_len, 537 .get_regs = mcs7830_get_regs, 538 539 /* common usbnet calls */ 540 .get_link = usbnet_get_link, 541 .get_msglevel = usbnet_get_msglevel, 542 .set_msglevel = usbnet_set_msglevel, 543 .get_settings = usbnet_get_settings, 544 .set_settings = usbnet_set_settings, 545 .nway_reset = usbnet_nway_reset, 546 }; 547 548 static const struct net_device_ops mcs7830_netdev_ops = { 549 .ndo_open = usbnet_open, 550 .ndo_stop = usbnet_stop, 551 .ndo_start_xmit = usbnet_start_xmit, 552 .ndo_tx_timeout = usbnet_tx_timeout, 553 .ndo_change_mtu = usbnet_change_mtu, 554 .ndo_validate_addr = eth_validate_addr, 555 .ndo_do_ioctl = mcs7830_ioctl, 556 .ndo_set_multicast_list = mcs7830_set_multicast, 557 .ndo_set_mac_address = mcs7830_set_mac_address, 558 }; 559 560 static int mcs7830_bind(struct usbnet *dev, struct usb_interface *udev) 561 { 562 struct net_device *net = dev->net; 563 int ret; 564 int retry; 565 566 /* Initial startup: Gather MAC address setting from EEPROM */ 567 ret = -EINVAL; 568 for (retry = 0; retry < 5 && ret; retry++) 569 ret = mcs7830_hif_get_mac_address(dev, net->dev_addr); 570 if (ret) { 571 dev_warn(&dev->udev->dev, "Cannot read MAC address\n"); 572 goto out; 573 } 574 575 mcs7830_data_set_multicast(net); 576 577 ret = mcs7830_apply_base_config(dev); 578 if (ret) 579 goto out; 580 581 net->ethtool_ops = &mcs7830_ethtool_ops; 582 net->netdev_ops = &mcs7830_netdev_ops; 583 584 /* reserve space for the status byte on rx */ 585 dev->rx_urb_size = ETH_FRAME_LEN + 1; 586 587 dev->mii.mdio_read = mcs7830_mdio_read; 588 dev->mii.mdio_write = mcs7830_mdio_write; 589 dev->mii.dev = net; 590 dev->mii.phy_id_mask = 0x3f; 591 dev->mii.reg_num_mask = 0x1f; 592 dev->mii.phy_id = *((u8 *) net->dev_addr + 1); 593 594 ret = usbnet_get_endpoints(dev, udev); 595 out: 596 return ret; 597 } 598 599 /* The chip always appends a status byte that we need to strip */ 600 static int mcs7830_rx_fixup(struct usbnet *dev, struct sk_buff *skb) 601 { 602 u8 status; 603 604 if (skb->len == 0) { 605 dev_err(&dev->udev->dev, "unexpected empty rx frame\n"); 606 return 0; 607 } 608 609 skb_trim(skb, skb->len - 1); 610 status = skb->data[skb->len]; 611 612 if (status != MCS7830_RX_FRAME_CORRECT) { 613 dev_dbg(&dev->udev->dev, "rx fixup status %x\n", status); 614 615 /* hmm, perhaps usbnet.c already sees a globally visible 616 frame error and increments rx_errors on its own already? */ 617 dev->net->stats.rx_errors++; 618 619 if (status & (MCS7830_RX_SHORT_FRAME 620 |MCS7830_RX_LENGTH_ERROR 621 |MCS7830_RX_LARGE_FRAME)) 622 dev->net->stats.rx_length_errors++; 623 if (status & MCS7830_RX_ALIGNMENT_ERROR) 624 dev->net->stats.rx_frame_errors++; 625 if (status & MCS7830_RX_CRC_ERROR) 626 dev->net->stats.rx_crc_errors++; 627 } 628 629 return skb->len > 0; 630 } 631 632 static const struct driver_info moschip_info = { 633 .description = "MOSCHIP 7830/7832/7730 usb-NET adapter", 634 .bind = mcs7830_bind, 635 .rx_fixup = mcs7830_rx_fixup, 636 .flags = FLAG_ETHER, 637 .in = 1, 638 .out = 2, 639 }; 640 641 static const struct driver_info sitecom_info = { 642 .description = "Sitecom LN-30 usb-NET adapter", 643 .bind = mcs7830_bind, 644 .rx_fixup = mcs7830_rx_fixup, 645 .flags = FLAG_ETHER, 646 .in = 1, 647 .out = 2, 648 }; 649 650 static const struct usb_device_id products[] = { 651 { 652 USB_DEVICE(MCS7830_VENDOR_ID, MCS7832_PRODUCT_ID), 653 .driver_info = (unsigned long) &moschip_info, 654 }, 655 { 656 USB_DEVICE(MCS7830_VENDOR_ID, MCS7830_PRODUCT_ID), 657 .driver_info = (unsigned long) &moschip_info, 658 }, 659 { 660 USB_DEVICE(MCS7830_VENDOR_ID, MCS7730_PRODUCT_ID), 661 .driver_info = (unsigned long) &moschip_info, 662 }, 663 { 664 USB_DEVICE(SITECOM_VENDOR_ID, LN_030_PRODUCT_ID), 665 .driver_info = (unsigned long) &sitecom_info, 666 }, 667 {}, 668 }; 669 MODULE_DEVICE_TABLE(usb, products); 670 671 static int mcs7830_reset_resume (struct usb_interface *intf) 672 { 673 /* YES, this function is successful enough that ethtool -d 674 does show same output pre-/post-suspend */ 675 676 struct usbnet *dev = usb_get_intfdata(intf); 677 678 mcs7830_apply_base_config(dev); 679 680 usbnet_resume(intf); 681 682 return 0; 683 } 684 685 static struct usb_driver mcs7830_driver = { 686 .name = driver_name, 687 .id_table = products, 688 .probe = usbnet_probe, 689 .disconnect = usbnet_disconnect, 690 .suspend = usbnet_suspend, 691 .resume = usbnet_resume, 692 .reset_resume = mcs7830_reset_resume, 693 }; 694 695 static int __init mcs7830_init(void) 696 { 697 return usb_register(&mcs7830_driver); 698 } 699 module_init(mcs7830_init); 700 701 static void __exit mcs7830_exit(void) 702 { 703 usb_deregister(&mcs7830_driver); 704 } 705 module_exit(mcs7830_exit); 706 707 MODULE_DESCRIPTION("USB to network adapter MCS7830)"); 708 MODULE_LICENSE("GPL"); 709