1 /* 2 * Copyright (c) 2012 Bjørn Mork <bjorn@mork.no> 3 * 4 * The probing code is heavily inspired by cdc_ether, which is: 5 * Copyright (C) 2003-2005 by David Brownell 6 * Copyright (C) 2006 by Ole Andre Vadla Ravnas (ActiveSync) 7 * 8 * This program is free software; you can redistribute it and/or 9 * modify it under the terms of the GNU General Public License 10 * version 2 as published by the Free Software Foundation. 11 */ 12 13 #include <linux/module.h> 14 #include <linux/sched/signal.h> 15 #include <linux/netdevice.h> 16 #include <linux/ethtool.h> 17 #include <linux/etherdevice.h> 18 #include <linux/if_arp.h> 19 #include <linux/mii.h> 20 #include <linux/rtnetlink.h> 21 #include <linux/usb.h> 22 #include <linux/usb/cdc.h> 23 #include <linux/usb/usbnet.h> 24 #include <linux/usb/cdc-wdm.h> 25 26 /* This driver supports wwan (3G/LTE/?) devices using a vendor 27 * specific management protocol called Qualcomm MSM Interface (QMI) - 28 * in addition to the more common AT commands over serial interface 29 * management 30 * 31 * QMI is wrapped in CDC, using CDC encapsulated commands on the 32 * control ("master") interface of a two-interface CDC Union 33 * resembling standard CDC ECM. The devices do not use the control 34 * interface for any other CDC messages. Most likely because the 35 * management protocol is used in place of the standard CDC 36 * notifications NOTIFY_NETWORK_CONNECTION and NOTIFY_SPEED_CHANGE 37 * 38 * Alternatively, control and data functions can be combined in a 39 * single USB interface. 40 * 41 * Handling a protocol like QMI is out of the scope for any driver. 42 * It is exported as a character device using the cdc-wdm driver as 43 * a subdriver, enabling userspace applications ("modem managers") to 44 * handle it. 45 * 46 * These devices may alternatively/additionally be configured using AT 47 * commands on a serial interface 48 */ 49 50 /* driver specific data */ 51 struct qmi_wwan_state { 52 struct usb_driver *subdriver; 53 atomic_t pmcount; 54 unsigned long flags; 55 struct usb_interface *control; 56 struct usb_interface *data; 57 }; 58 59 enum qmi_wwan_flags { 60 QMI_WWAN_FLAG_RAWIP = 1 << 0, 61 QMI_WWAN_FLAG_MUX = 1 << 1, 62 }; 63 64 enum qmi_wwan_quirks { 65 QMI_WWAN_QUIRK_DTR = 1 << 0, /* needs "set DTR" request */ 66 }; 67 68 struct qmimux_hdr { 69 u8 pad; 70 u8 mux_id; 71 __be16 pkt_len; 72 }; 73 74 struct qmimux_priv { 75 struct net_device *real_dev; 76 u8 mux_id; 77 }; 78 79 static int qmimux_open(struct net_device *dev) 80 { 81 struct qmimux_priv *priv = netdev_priv(dev); 82 struct net_device *real_dev = priv->real_dev; 83 84 if (!(priv->real_dev->flags & IFF_UP)) 85 return -ENETDOWN; 86 87 if (netif_carrier_ok(real_dev)) 88 netif_carrier_on(dev); 89 return 0; 90 } 91 92 static int qmimux_stop(struct net_device *dev) 93 { 94 netif_carrier_off(dev); 95 return 0; 96 } 97 98 static netdev_tx_t qmimux_start_xmit(struct sk_buff *skb, struct net_device *dev) 99 { 100 struct qmimux_priv *priv = netdev_priv(dev); 101 unsigned int len = skb->len; 102 struct qmimux_hdr *hdr; 103 104 hdr = skb_push(skb, sizeof(struct qmimux_hdr)); 105 hdr->pad = 0; 106 hdr->mux_id = priv->mux_id; 107 hdr->pkt_len = cpu_to_be16(len); 108 skb->dev = priv->real_dev; 109 return dev_queue_xmit(skb); 110 } 111 112 static const struct net_device_ops qmimux_netdev_ops = { 113 .ndo_open = qmimux_open, 114 .ndo_stop = qmimux_stop, 115 .ndo_start_xmit = qmimux_start_xmit, 116 }; 117 118 static void qmimux_setup(struct net_device *dev) 119 { 120 dev->header_ops = NULL; /* No header */ 121 dev->type = ARPHRD_NONE; 122 dev->hard_header_len = 0; 123 dev->addr_len = 0; 124 dev->flags = IFF_POINTOPOINT | IFF_NOARP | IFF_MULTICAST; 125 dev->netdev_ops = &qmimux_netdev_ops; 126 dev->needs_free_netdev = true; 127 } 128 129 static struct net_device *qmimux_find_dev(struct usbnet *dev, u8 mux_id) 130 { 131 struct qmimux_priv *priv; 132 struct list_head *iter; 133 struct net_device *ldev; 134 135 rcu_read_lock(); 136 netdev_for_each_upper_dev_rcu(dev->net, ldev, iter) { 137 priv = netdev_priv(ldev); 138 if (priv->mux_id == mux_id) { 139 rcu_read_unlock(); 140 return ldev; 141 } 142 } 143 rcu_read_unlock(); 144 return NULL; 145 } 146 147 static bool qmimux_has_slaves(struct usbnet *dev) 148 { 149 return !list_empty(&dev->net->adj_list.upper); 150 } 151 152 static int qmimux_rx_fixup(struct usbnet *dev, struct sk_buff *skb) 153 { 154 unsigned int len, offset = sizeof(struct qmimux_hdr); 155 struct qmimux_hdr *hdr; 156 struct net_device *net; 157 struct sk_buff *skbn; 158 159 while (offset < skb->len) { 160 hdr = (struct qmimux_hdr *)skb->data; 161 len = be16_to_cpu(hdr->pkt_len); 162 163 /* drop the packet, bogus length */ 164 if (offset + len > skb->len) 165 return 0; 166 167 /* control packet, we do not know what to do */ 168 if (hdr->pad & 0x80) 169 goto skip; 170 171 net = qmimux_find_dev(dev, hdr->mux_id); 172 if (!net) 173 goto skip; 174 skbn = netdev_alloc_skb(net, len); 175 if (!skbn) 176 return 0; 177 skbn->dev = net; 178 179 switch (skb->data[offset] & 0xf0) { 180 case 0x40: 181 skbn->protocol = htons(ETH_P_IP); 182 break; 183 case 0x60: 184 skbn->protocol = htons(ETH_P_IPV6); 185 break; 186 default: 187 /* not ip - do not know what to do */ 188 goto skip; 189 } 190 191 skb_put_data(skbn, skb->data + offset, len); 192 if (netif_rx(skbn) != NET_RX_SUCCESS) 193 return 0; 194 195 skip: 196 offset += len + sizeof(struct qmimux_hdr); 197 } 198 return 1; 199 } 200 201 static int qmimux_register_device(struct net_device *real_dev, u8 mux_id) 202 { 203 struct net_device *new_dev; 204 struct qmimux_priv *priv; 205 int err; 206 207 new_dev = alloc_netdev(sizeof(struct qmimux_priv), 208 "qmimux%d", NET_NAME_UNKNOWN, qmimux_setup); 209 if (!new_dev) 210 return -ENOBUFS; 211 212 dev_net_set(new_dev, dev_net(real_dev)); 213 priv = netdev_priv(new_dev); 214 priv->mux_id = mux_id; 215 priv->real_dev = real_dev; 216 217 err = register_netdevice(new_dev); 218 if (err < 0) 219 goto out_free_newdev; 220 221 /* Account for reference in struct qmimux_priv_priv */ 222 dev_hold(real_dev); 223 224 err = netdev_upper_dev_link(real_dev, new_dev); 225 if (err) 226 goto out_unregister_netdev; 227 228 netif_stacked_transfer_operstate(real_dev, new_dev); 229 230 return 0; 231 232 out_unregister_netdev: 233 unregister_netdevice(new_dev); 234 dev_put(real_dev); 235 236 out_free_newdev: 237 free_netdev(new_dev); 238 return err; 239 } 240 241 static void qmimux_unregister_device(struct net_device *dev) 242 { 243 struct qmimux_priv *priv = netdev_priv(dev); 244 struct net_device *real_dev = priv->real_dev; 245 246 netdev_upper_dev_unlink(real_dev, dev); 247 unregister_netdevice(dev); 248 249 /* Get rid of the reference to real_dev */ 250 dev_put(real_dev); 251 } 252 253 static void qmi_wwan_netdev_setup(struct net_device *net) 254 { 255 struct usbnet *dev = netdev_priv(net); 256 struct qmi_wwan_state *info = (void *)&dev->data; 257 258 if (info->flags & QMI_WWAN_FLAG_RAWIP) { 259 net->header_ops = NULL; /* No header */ 260 net->type = ARPHRD_NONE; 261 net->hard_header_len = 0; 262 net->addr_len = 0; 263 net->flags = IFF_POINTOPOINT | IFF_NOARP | IFF_MULTICAST; 264 netdev_dbg(net, "mode: raw IP\n"); 265 } else if (!net->header_ops) { /* don't bother if already set */ 266 ether_setup(net); 267 netdev_dbg(net, "mode: Ethernet\n"); 268 } 269 270 /* recalculate buffers after changing hard_header_len */ 271 usbnet_change_mtu(net, net->mtu); 272 } 273 274 static ssize_t raw_ip_show(struct device *d, struct device_attribute *attr, char *buf) 275 { 276 struct usbnet *dev = netdev_priv(to_net_dev(d)); 277 struct qmi_wwan_state *info = (void *)&dev->data; 278 279 return sprintf(buf, "%c\n", info->flags & QMI_WWAN_FLAG_RAWIP ? 'Y' : 'N'); 280 } 281 282 static ssize_t raw_ip_store(struct device *d, struct device_attribute *attr, const char *buf, size_t len) 283 { 284 struct usbnet *dev = netdev_priv(to_net_dev(d)); 285 struct qmi_wwan_state *info = (void *)&dev->data; 286 bool enable; 287 int ret; 288 289 if (strtobool(buf, &enable)) 290 return -EINVAL; 291 292 /* no change? */ 293 if (enable == (info->flags & QMI_WWAN_FLAG_RAWIP)) 294 return len; 295 296 if (!rtnl_trylock()) 297 return restart_syscall(); 298 299 /* we don't want to modify a running netdev */ 300 if (netif_running(dev->net)) { 301 netdev_err(dev->net, "Cannot change a running device\n"); 302 ret = -EBUSY; 303 goto err; 304 } 305 306 /* let other drivers deny the change */ 307 ret = call_netdevice_notifiers(NETDEV_PRE_TYPE_CHANGE, dev->net); 308 ret = notifier_to_errno(ret); 309 if (ret) { 310 netdev_err(dev->net, "Type change was refused\n"); 311 goto err; 312 } 313 314 if (enable) 315 info->flags |= QMI_WWAN_FLAG_RAWIP; 316 else 317 info->flags &= ~QMI_WWAN_FLAG_RAWIP; 318 qmi_wwan_netdev_setup(dev->net); 319 call_netdevice_notifiers(NETDEV_POST_TYPE_CHANGE, dev->net); 320 ret = len; 321 err: 322 rtnl_unlock(); 323 return ret; 324 } 325 326 static ssize_t add_mux_show(struct device *d, struct device_attribute *attr, char *buf) 327 { 328 struct net_device *dev = to_net_dev(d); 329 struct qmimux_priv *priv; 330 struct list_head *iter; 331 struct net_device *ldev; 332 ssize_t count = 0; 333 334 rcu_read_lock(); 335 netdev_for_each_upper_dev_rcu(dev, ldev, iter) { 336 priv = netdev_priv(ldev); 337 count += scnprintf(&buf[count], PAGE_SIZE - count, 338 "0x%02x\n", priv->mux_id); 339 } 340 rcu_read_unlock(); 341 return count; 342 } 343 344 static ssize_t add_mux_store(struct device *d, struct device_attribute *attr, const char *buf, size_t len) 345 { 346 struct usbnet *dev = netdev_priv(to_net_dev(d)); 347 struct qmi_wwan_state *info = (void *)&dev->data; 348 u8 mux_id; 349 int ret; 350 351 if (kstrtou8(buf, 0, &mux_id)) 352 return -EINVAL; 353 354 /* mux_id [1 - 0x7f] range empirically found */ 355 if (mux_id < 1 || mux_id > 0x7f) 356 return -EINVAL; 357 358 if (!rtnl_trylock()) 359 return restart_syscall(); 360 361 if (qmimux_find_dev(dev, mux_id)) { 362 netdev_err(dev->net, "mux_id already present\n"); 363 ret = -EINVAL; 364 goto err; 365 } 366 367 /* we don't want to modify a running netdev */ 368 if (netif_running(dev->net)) { 369 netdev_err(dev->net, "Cannot change a running device\n"); 370 ret = -EBUSY; 371 goto err; 372 } 373 374 ret = qmimux_register_device(dev->net, mux_id); 375 if (!ret) { 376 info->flags |= QMI_WWAN_FLAG_MUX; 377 ret = len; 378 } 379 err: 380 rtnl_unlock(); 381 return ret; 382 } 383 384 static ssize_t del_mux_show(struct device *d, struct device_attribute *attr, char *buf) 385 { 386 return add_mux_show(d, attr, buf); 387 } 388 389 static ssize_t del_mux_store(struct device *d, struct device_attribute *attr, const char *buf, size_t len) 390 { 391 struct usbnet *dev = netdev_priv(to_net_dev(d)); 392 struct qmi_wwan_state *info = (void *)&dev->data; 393 struct net_device *del_dev; 394 u8 mux_id; 395 int ret = 0; 396 397 if (kstrtou8(buf, 0, &mux_id)) 398 return -EINVAL; 399 400 if (!rtnl_trylock()) 401 return restart_syscall(); 402 403 /* we don't want to modify a running netdev */ 404 if (netif_running(dev->net)) { 405 netdev_err(dev->net, "Cannot change a running device\n"); 406 ret = -EBUSY; 407 goto err; 408 } 409 410 del_dev = qmimux_find_dev(dev, mux_id); 411 if (!del_dev) { 412 netdev_err(dev->net, "mux_id not present\n"); 413 ret = -EINVAL; 414 goto err; 415 } 416 qmimux_unregister_device(del_dev); 417 418 if (!qmimux_has_slaves(dev)) 419 info->flags &= ~QMI_WWAN_FLAG_MUX; 420 ret = len; 421 err: 422 rtnl_unlock(); 423 return ret; 424 } 425 426 static DEVICE_ATTR_RW(raw_ip); 427 static DEVICE_ATTR_RW(add_mux); 428 static DEVICE_ATTR_RW(del_mux); 429 430 static struct attribute *qmi_wwan_sysfs_attrs[] = { 431 &dev_attr_raw_ip.attr, 432 &dev_attr_add_mux.attr, 433 &dev_attr_del_mux.attr, 434 NULL, 435 }; 436 437 static struct attribute_group qmi_wwan_sysfs_attr_group = { 438 .name = "qmi", 439 .attrs = qmi_wwan_sysfs_attrs, 440 }; 441 442 /* default ethernet address used by the modem */ 443 static const u8 default_modem_addr[ETH_ALEN] = {0x02, 0x50, 0xf3}; 444 445 static const u8 buggy_fw_addr[ETH_ALEN] = {0x00, 0xa0, 0xc6, 0x00, 0x00, 0x00}; 446 447 /* Make up an ethernet header if the packet doesn't have one. 448 * 449 * A firmware bug common among several devices cause them to send raw 450 * IP packets under some circumstances. There is no way for the 451 * driver/host to know when this will happen. And even when the bug 452 * hits, some packets will still arrive with an intact header. 453 * 454 * The supported devices are only capably of sending IPv4, IPv6 and 455 * ARP packets on a point-to-point link. Any packet with an ethernet 456 * header will have either our address or a broadcast/multicast 457 * address as destination. ARP packets will always have a header. 458 * 459 * This means that this function will reliably add the appropriate 460 * header iff necessary, provided our hardware address does not start 461 * with 4 or 6. 462 * 463 * Another common firmware bug results in all packets being addressed 464 * to 00:a0:c6:00:00:00 despite the host address being different. 465 * This function will also fixup such packets. 466 */ 467 static int qmi_wwan_rx_fixup(struct usbnet *dev, struct sk_buff *skb) 468 { 469 struct qmi_wwan_state *info = (void *)&dev->data; 470 bool rawip = info->flags & QMI_WWAN_FLAG_RAWIP; 471 __be16 proto; 472 473 /* This check is no longer done by usbnet */ 474 if (skb->len < dev->net->hard_header_len) 475 return 0; 476 477 if (info->flags & QMI_WWAN_FLAG_MUX) 478 return qmimux_rx_fixup(dev, skb); 479 480 switch (skb->data[0] & 0xf0) { 481 case 0x40: 482 proto = htons(ETH_P_IP); 483 break; 484 case 0x60: 485 proto = htons(ETH_P_IPV6); 486 break; 487 case 0x00: 488 if (rawip) 489 return 0; 490 if (is_multicast_ether_addr(skb->data)) 491 return 1; 492 /* possibly bogus destination - rewrite just in case */ 493 skb_reset_mac_header(skb); 494 goto fix_dest; 495 default: 496 if (rawip) 497 return 0; 498 /* pass along other packets without modifications */ 499 return 1; 500 } 501 if (rawip) { 502 skb->dev = dev->net; /* normally set by eth_type_trans */ 503 skb->protocol = proto; 504 return 1; 505 } 506 507 if (skb_headroom(skb) < ETH_HLEN) 508 return 0; 509 skb_push(skb, ETH_HLEN); 510 skb_reset_mac_header(skb); 511 eth_hdr(skb)->h_proto = proto; 512 eth_zero_addr(eth_hdr(skb)->h_source); 513 fix_dest: 514 memcpy(eth_hdr(skb)->h_dest, dev->net->dev_addr, ETH_ALEN); 515 return 1; 516 } 517 518 /* very simplistic detection of IPv4 or IPv6 headers */ 519 static bool possibly_iphdr(const char *data) 520 { 521 return (data[0] & 0xd0) == 0x40; 522 } 523 524 /* disallow addresses which may be confused with IP headers */ 525 static int qmi_wwan_mac_addr(struct net_device *dev, void *p) 526 { 527 int ret; 528 struct sockaddr *addr = p; 529 530 ret = eth_prepare_mac_addr_change(dev, p); 531 if (ret < 0) 532 return ret; 533 if (possibly_iphdr(addr->sa_data)) 534 return -EADDRNOTAVAIL; 535 eth_commit_mac_addr_change(dev, p); 536 return 0; 537 } 538 539 static const struct net_device_ops qmi_wwan_netdev_ops = { 540 .ndo_open = usbnet_open, 541 .ndo_stop = usbnet_stop, 542 .ndo_start_xmit = usbnet_start_xmit, 543 .ndo_tx_timeout = usbnet_tx_timeout, 544 .ndo_change_mtu = usbnet_change_mtu, 545 .ndo_get_stats64 = usbnet_get_stats64, 546 .ndo_set_mac_address = qmi_wwan_mac_addr, 547 .ndo_validate_addr = eth_validate_addr, 548 }; 549 550 /* using a counter to merge subdriver requests with our own into a 551 * combined state 552 */ 553 static int qmi_wwan_manage_power(struct usbnet *dev, int on) 554 { 555 struct qmi_wwan_state *info = (void *)&dev->data; 556 int rv; 557 558 dev_dbg(&dev->intf->dev, "%s() pmcount=%d, on=%d\n", __func__, 559 atomic_read(&info->pmcount), on); 560 561 if ((on && atomic_add_return(1, &info->pmcount) == 1) || 562 (!on && atomic_dec_and_test(&info->pmcount))) { 563 /* need autopm_get/put here to ensure the usbcore sees 564 * the new value 565 */ 566 rv = usb_autopm_get_interface(dev->intf); 567 dev->intf->needs_remote_wakeup = on; 568 if (!rv) 569 usb_autopm_put_interface(dev->intf); 570 } 571 return 0; 572 } 573 574 static int qmi_wwan_cdc_wdm_manage_power(struct usb_interface *intf, int on) 575 { 576 struct usbnet *dev = usb_get_intfdata(intf); 577 578 /* can be called while disconnecting */ 579 if (!dev) 580 return 0; 581 return qmi_wwan_manage_power(dev, on); 582 } 583 584 /* collect all three endpoints and register subdriver */ 585 static int qmi_wwan_register_subdriver(struct usbnet *dev) 586 { 587 int rv; 588 struct usb_driver *subdriver = NULL; 589 struct qmi_wwan_state *info = (void *)&dev->data; 590 591 /* collect bulk endpoints */ 592 rv = usbnet_get_endpoints(dev, info->data); 593 if (rv < 0) 594 goto err; 595 596 /* update status endpoint if separate control interface */ 597 if (info->control != info->data) 598 dev->status = &info->control->cur_altsetting->endpoint[0]; 599 600 /* require interrupt endpoint for subdriver */ 601 if (!dev->status) { 602 rv = -EINVAL; 603 goto err; 604 } 605 606 /* for subdriver power management */ 607 atomic_set(&info->pmcount, 0); 608 609 /* register subdriver */ 610 subdriver = usb_cdc_wdm_register(info->control, &dev->status->desc, 611 4096, &qmi_wwan_cdc_wdm_manage_power); 612 if (IS_ERR(subdriver)) { 613 dev_err(&info->control->dev, "subdriver registration failed\n"); 614 rv = PTR_ERR(subdriver); 615 goto err; 616 } 617 618 /* prevent usbnet from using status endpoint */ 619 dev->status = NULL; 620 621 /* save subdriver struct for suspend/resume wrappers */ 622 info->subdriver = subdriver; 623 624 err: 625 return rv; 626 } 627 628 /* Send CDC SetControlLineState request, setting or clearing the DTR. 629 * "Required for Autoconnect and 9x30 to wake up" according to the 630 * GobiNet driver. The requirement has been verified on an MDM9230 631 * based Sierra Wireless MC7455 632 */ 633 static int qmi_wwan_change_dtr(struct usbnet *dev, bool on) 634 { 635 u8 intf = dev->intf->cur_altsetting->desc.bInterfaceNumber; 636 637 return usbnet_write_cmd(dev, USB_CDC_REQ_SET_CONTROL_LINE_STATE, 638 USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE, 639 on ? 0x01 : 0x00, intf, NULL, 0); 640 } 641 642 static int qmi_wwan_bind(struct usbnet *dev, struct usb_interface *intf) 643 { 644 int status = -1; 645 u8 *buf = intf->cur_altsetting->extra; 646 int len = intf->cur_altsetting->extralen; 647 struct usb_interface_descriptor *desc = &intf->cur_altsetting->desc; 648 struct usb_cdc_union_desc *cdc_union; 649 struct usb_cdc_ether_desc *cdc_ether; 650 struct usb_driver *driver = driver_of(intf); 651 struct qmi_wwan_state *info = (void *)&dev->data; 652 struct usb_cdc_parsed_header hdr; 653 654 BUILD_BUG_ON((sizeof(((struct usbnet *)0)->data) < 655 sizeof(struct qmi_wwan_state))); 656 657 /* set up initial state */ 658 info->control = intf; 659 info->data = intf; 660 661 /* and a number of CDC descriptors */ 662 cdc_parse_cdc_header(&hdr, intf, buf, len); 663 cdc_union = hdr.usb_cdc_union_desc; 664 cdc_ether = hdr.usb_cdc_ether_desc; 665 666 /* Use separate control and data interfaces if we found a CDC Union */ 667 if (cdc_union) { 668 info->data = usb_ifnum_to_if(dev->udev, 669 cdc_union->bSlaveInterface0); 670 if (desc->bInterfaceNumber != cdc_union->bMasterInterface0 || 671 !info->data) { 672 dev_err(&intf->dev, 673 "bogus CDC Union: master=%u, slave=%u\n", 674 cdc_union->bMasterInterface0, 675 cdc_union->bSlaveInterface0); 676 677 /* ignore and continue... */ 678 cdc_union = NULL; 679 info->data = intf; 680 } 681 } 682 683 /* errors aren't fatal - we can live with the dynamic address */ 684 if (cdc_ether) { 685 dev->hard_mtu = le16_to_cpu(cdc_ether->wMaxSegmentSize); 686 usbnet_get_ethernet_addr(dev, cdc_ether->iMACAddress); 687 } 688 689 /* claim data interface and set it up */ 690 if (info->control != info->data) { 691 status = usb_driver_claim_interface(driver, info->data, dev); 692 if (status < 0) 693 goto err; 694 } 695 696 status = qmi_wwan_register_subdriver(dev); 697 if (status < 0 && info->control != info->data) { 698 usb_set_intfdata(info->data, NULL); 699 usb_driver_release_interface(driver, info->data); 700 } 701 702 /* disabling remote wakeup on MDM9x30 devices has the same 703 * effect as clearing DTR. The device will not respond to QMI 704 * requests until we set DTR again. This is similar to a 705 * QMI_CTL SYNC request, clearing a lot of firmware state 706 * including the client ID allocations. 707 * 708 * Our usage model allows a session to span multiple 709 * open/close events, so we must prevent the firmware from 710 * clearing out state the clients might need. 711 * 712 * MDM9x30 is the first QMI chipset with USB3 support. Abuse 713 * this fact to enable the quirk for all USB3 devices. 714 * 715 * There are also chipsets with the same "set DTR" requirement 716 * but without USB3 support. Devices based on these chips 717 * need a quirk flag in the device ID table. 718 */ 719 if (dev->driver_info->data & QMI_WWAN_QUIRK_DTR || 720 le16_to_cpu(dev->udev->descriptor.bcdUSB) >= 0x0201) { 721 qmi_wwan_manage_power(dev, 1); 722 qmi_wwan_change_dtr(dev, true); 723 } 724 725 /* Never use the same address on both ends of the link, even if the 726 * buggy firmware told us to. Or, if device is assigned the well-known 727 * buggy firmware MAC address, replace it with a random address, 728 */ 729 if (ether_addr_equal(dev->net->dev_addr, default_modem_addr) || 730 ether_addr_equal(dev->net->dev_addr, buggy_fw_addr)) 731 eth_hw_addr_random(dev->net); 732 733 /* make MAC addr easily distinguishable from an IP header */ 734 if (possibly_iphdr(dev->net->dev_addr)) { 735 dev->net->dev_addr[0] |= 0x02; /* set local assignment bit */ 736 dev->net->dev_addr[0] &= 0xbf; /* clear "IP" bit */ 737 } 738 dev->net->netdev_ops = &qmi_wwan_netdev_ops; 739 dev->net->sysfs_groups[0] = &qmi_wwan_sysfs_attr_group; 740 err: 741 return status; 742 } 743 744 static void qmi_wwan_unbind(struct usbnet *dev, struct usb_interface *intf) 745 { 746 struct qmi_wwan_state *info = (void *)&dev->data; 747 struct usb_driver *driver = driver_of(intf); 748 struct usb_interface *other; 749 750 if (info->subdriver && info->subdriver->disconnect) 751 info->subdriver->disconnect(info->control); 752 753 /* disable MDM9x30 quirk */ 754 if (le16_to_cpu(dev->udev->descriptor.bcdUSB) >= 0x0201) { 755 qmi_wwan_change_dtr(dev, false); 756 qmi_wwan_manage_power(dev, 0); 757 } 758 759 /* allow user to unbind using either control or data */ 760 if (intf == info->control) 761 other = info->data; 762 else 763 other = info->control; 764 765 /* only if not shared */ 766 if (other && intf != other) { 767 usb_set_intfdata(other, NULL); 768 usb_driver_release_interface(driver, other); 769 } 770 771 info->subdriver = NULL; 772 info->data = NULL; 773 info->control = NULL; 774 } 775 776 /* suspend/resume wrappers calling both usbnet and the cdc-wdm 777 * subdriver if present. 778 * 779 * NOTE: cdc-wdm also supports pre/post_reset, but we cannot provide 780 * wrappers for those without adding usbnet reset support first. 781 */ 782 static int qmi_wwan_suspend(struct usb_interface *intf, pm_message_t message) 783 { 784 struct usbnet *dev = usb_get_intfdata(intf); 785 struct qmi_wwan_state *info = (void *)&dev->data; 786 int ret; 787 788 /* Both usbnet_suspend() and subdriver->suspend() MUST return 0 789 * in system sleep context, otherwise, the resume callback has 790 * to recover device from previous suspend failure. 791 */ 792 ret = usbnet_suspend(intf, message); 793 if (ret < 0) 794 goto err; 795 796 if (intf == info->control && info->subdriver && 797 info->subdriver->suspend) 798 ret = info->subdriver->suspend(intf, message); 799 if (ret < 0) 800 usbnet_resume(intf); 801 err: 802 return ret; 803 } 804 805 static int qmi_wwan_resume(struct usb_interface *intf) 806 { 807 struct usbnet *dev = usb_get_intfdata(intf); 808 struct qmi_wwan_state *info = (void *)&dev->data; 809 int ret = 0; 810 bool callsub = (intf == info->control && info->subdriver && 811 info->subdriver->resume); 812 813 if (callsub) 814 ret = info->subdriver->resume(intf); 815 if (ret < 0) 816 goto err; 817 ret = usbnet_resume(intf); 818 if (ret < 0 && callsub) 819 info->subdriver->suspend(intf, PMSG_SUSPEND); 820 err: 821 return ret; 822 } 823 824 static const struct driver_info qmi_wwan_info = { 825 .description = "WWAN/QMI device", 826 .flags = FLAG_WWAN, 827 .bind = qmi_wwan_bind, 828 .unbind = qmi_wwan_unbind, 829 .manage_power = qmi_wwan_manage_power, 830 .rx_fixup = qmi_wwan_rx_fixup, 831 }; 832 833 static const struct driver_info qmi_wwan_info_quirk_dtr = { 834 .description = "WWAN/QMI device", 835 .flags = FLAG_WWAN, 836 .bind = qmi_wwan_bind, 837 .unbind = qmi_wwan_unbind, 838 .manage_power = qmi_wwan_manage_power, 839 .rx_fixup = qmi_wwan_rx_fixup, 840 .data = QMI_WWAN_QUIRK_DTR, 841 }; 842 843 #define HUAWEI_VENDOR_ID 0x12D1 844 845 /* map QMI/wwan function by a fixed interface number */ 846 #define QMI_FIXED_INTF(vend, prod, num) \ 847 USB_DEVICE_INTERFACE_NUMBER(vend, prod, num), \ 848 .driver_info = (unsigned long)&qmi_wwan_info 849 850 /* devices requiring "set DTR" quirk */ 851 #define QMI_QUIRK_SET_DTR(vend, prod, num) \ 852 USB_DEVICE_INTERFACE_NUMBER(vend, prod, num), \ 853 .driver_info = (unsigned long)&qmi_wwan_info_quirk_dtr 854 855 /* Gobi 1000 QMI/wwan interface number is 3 according to qcserial */ 856 #define QMI_GOBI1K_DEVICE(vend, prod) \ 857 QMI_FIXED_INTF(vend, prod, 3) 858 859 /* Gobi 2000/3000 QMI/wwan interface number is 0 according to qcserial */ 860 #define QMI_GOBI_DEVICE(vend, prod) \ 861 QMI_FIXED_INTF(vend, prod, 0) 862 863 static const struct usb_device_id products[] = { 864 /* 1. CDC ECM like devices match on the control interface */ 865 { /* Huawei E392, E398 and possibly others sharing both device id and more... */ 866 USB_VENDOR_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, USB_CLASS_VENDOR_SPEC, 1, 9), 867 .driver_info = (unsigned long)&qmi_wwan_info, 868 }, 869 { /* Vodafone/Huawei K5005 (12d1:14c8) and similar modems */ 870 USB_VENDOR_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, USB_CLASS_VENDOR_SPEC, 1, 57), 871 .driver_info = (unsigned long)&qmi_wwan_info, 872 }, 873 { /* HUAWEI_INTERFACE_NDIS_CONTROL_QUALCOMM */ 874 USB_VENDOR_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, USB_CLASS_VENDOR_SPEC, 0x01, 0x69), 875 .driver_info = (unsigned long)&qmi_wwan_info, 876 }, 877 { /* Motorola Mapphone devices with MDM6600 */ 878 USB_VENDOR_AND_INTERFACE_INFO(0x22b8, USB_CLASS_VENDOR_SPEC, 0xfb, 0xff), 879 .driver_info = (unsigned long)&qmi_wwan_info, 880 }, 881 882 /* 2. Combined interface devices matching on class+protocol */ 883 { /* Huawei E367 and possibly others in "Windows mode" */ 884 USB_VENDOR_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, USB_CLASS_VENDOR_SPEC, 1, 7), 885 .driver_info = (unsigned long)&qmi_wwan_info, 886 }, 887 { /* Huawei E392, E398 and possibly others in "Windows mode" */ 888 USB_VENDOR_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, USB_CLASS_VENDOR_SPEC, 1, 17), 889 .driver_info = (unsigned long)&qmi_wwan_info, 890 }, 891 { /* HUAWEI_NDIS_SINGLE_INTERFACE_VDF */ 892 USB_VENDOR_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, USB_CLASS_VENDOR_SPEC, 0x01, 0x37), 893 .driver_info = (unsigned long)&qmi_wwan_info, 894 }, 895 { /* HUAWEI_INTERFACE_NDIS_HW_QUALCOMM */ 896 USB_VENDOR_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, USB_CLASS_VENDOR_SPEC, 0x01, 0x67), 897 .driver_info = (unsigned long)&qmi_wwan_info, 898 }, 899 { /* Pantech UML290, P4200 and more */ 900 USB_VENDOR_AND_INTERFACE_INFO(0x106c, USB_CLASS_VENDOR_SPEC, 0xf0, 0xff), 901 .driver_info = (unsigned long)&qmi_wwan_info, 902 }, 903 { /* Pantech UML290 - newer firmware */ 904 USB_VENDOR_AND_INTERFACE_INFO(0x106c, USB_CLASS_VENDOR_SPEC, 0xf1, 0xff), 905 .driver_info = (unsigned long)&qmi_wwan_info, 906 }, 907 { /* Novatel USB551L and MC551 */ 908 USB_DEVICE_AND_INTERFACE_INFO(0x1410, 0xb001, 909 USB_CLASS_COMM, 910 USB_CDC_SUBCLASS_ETHERNET, 911 USB_CDC_PROTO_NONE), 912 .driver_info = (unsigned long)&qmi_wwan_info, 913 }, 914 { /* Novatel E362 */ 915 USB_DEVICE_AND_INTERFACE_INFO(0x1410, 0x9010, 916 USB_CLASS_COMM, 917 USB_CDC_SUBCLASS_ETHERNET, 918 USB_CDC_PROTO_NONE), 919 .driver_info = (unsigned long)&qmi_wwan_info, 920 }, 921 { /* Novatel Expedite E371 */ 922 USB_DEVICE_AND_INTERFACE_INFO(0x1410, 0x9011, 923 USB_CLASS_COMM, 924 USB_CDC_SUBCLASS_ETHERNET, 925 USB_CDC_PROTO_NONE), 926 .driver_info = (unsigned long)&qmi_wwan_info, 927 }, 928 { /* Dell Wireless 5800 (Novatel E362) */ 929 USB_DEVICE_AND_INTERFACE_INFO(0x413C, 0x8195, 930 USB_CLASS_COMM, 931 USB_CDC_SUBCLASS_ETHERNET, 932 USB_CDC_PROTO_NONE), 933 .driver_info = (unsigned long)&qmi_wwan_info, 934 }, 935 { /* Dell Wireless 5800 V2 (Novatel E362) */ 936 USB_DEVICE_AND_INTERFACE_INFO(0x413C, 0x8196, 937 USB_CLASS_COMM, 938 USB_CDC_SUBCLASS_ETHERNET, 939 USB_CDC_PROTO_NONE), 940 .driver_info = (unsigned long)&qmi_wwan_info, 941 }, 942 { /* Dell Wireless 5804 (Novatel E371) */ 943 USB_DEVICE_AND_INTERFACE_INFO(0x413C, 0x819b, 944 USB_CLASS_COMM, 945 USB_CDC_SUBCLASS_ETHERNET, 946 USB_CDC_PROTO_NONE), 947 .driver_info = (unsigned long)&qmi_wwan_info, 948 }, 949 { /* ADU960S */ 950 USB_DEVICE_AND_INTERFACE_INFO(0x16d5, 0x650a, 951 USB_CLASS_COMM, 952 USB_CDC_SUBCLASS_ETHERNET, 953 USB_CDC_PROTO_NONE), 954 .driver_info = (unsigned long)&qmi_wwan_info, 955 }, 956 { /* HP lt2523 (Novatel E371) */ 957 USB_DEVICE_AND_INTERFACE_INFO(0x03f0, 0x421d, 958 USB_CLASS_COMM, 959 USB_CDC_SUBCLASS_ETHERNET, 960 USB_CDC_PROTO_NONE), 961 .driver_info = (unsigned long)&qmi_wwan_info, 962 }, 963 { /* HP lt4112 LTE/HSPA+ Gobi 4G Module (Huawei me906e) */ 964 USB_DEVICE_AND_INTERFACE_INFO(0x03f0, 0x581d, USB_CLASS_VENDOR_SPEC, 1, 7), 965 .driver_info = (unsigned long)&qmi_wwan_info, 966 }, 967 968 /* 3. Combined interface devices matching on interface number */ 969 {QMI_FIXED_INTF(0x0408, 0xea42, 4)}, /* Yota / Megafon M100-1 */ 970 {QMI_FIXED_INTF(0x05c6, 0x6001, 3)}, /* 4G LTE usb-modem U901 */ 971 {QMI_FIXED_INTF(0x05c6, 0x7000, 0)}, 972 {QMI_FIXED_INTF(0x05c6, 0x7001, 1)}, 973 {QMI_FIXED_INTF(0x05c6, 0x7002, 1)}, 974 {QMI_FIXED_INTF(0x05c6, 0x7101, 1)}, 975 {QMI_FIXED_INTF(0x05c6, 0x7101, 2)}, 976 {QMI_FIXED_INTF(0x05c6, 0x7101, 3)}, 977 {QMI_FIXED_INTF(0x05c6, 0x7102, 1)}, 978 {QMI_FIXED_INTF(0x05c6, 0x7102, 2)}, 979 {QMI_FIXED_INTF(0x05c6, 0x7102, 3)}, 980 {QMI_FIXED_INTF(0x05c6, 0x8000, 7)}, 981 {QMI_FIXED_INTF(0x05c6, 0x8001, 6)}, 982 {QMI_FIXED_INTF(0x05c6, 0x9000, 4)}, 983 {QMI_FIXED_INTF(0x05c6, 0x9003, 4)}, 984 {QMI_FIXED_INTF(0x05c6, 0x9005, 2)}, 985 {QMI_FIXED_INTF(0x05c6, 0x900a, 4)}, 986 {QMI_FIXED_INTF(0x05c6, 0x900b, 2)}, 987 {QMI_FIXED_INTF(0x05c6, 0x900c, 4)}, 988 {QMI_FIXED_INTF(0x05c6, 0x900c, 5)}, 989 {QMI_FIXED_INTF(0x05c6, 0x900c, 6)}, 990 {QMI_FIXED_INTF(0x05c6, 0x900d, 5)}, 991 {QMI_FIXED_INTF(0x05c6, 0x900f, 3)}, 992 {QMI_FIXED_INTF(0x05c6, 0x900f, 4)}, 993 {QMI_FIXED_INTF(0x05c6, 0x900f, 5)}, 994 {QMI_FIXED_INTF(0x05c6, 0x9010, 4)}, 995 {QMI_FIXED_INTF(0x05c6, 0x9010, 5)}, 996 {QMI_FIXED_INTF(0x05c6, 0x9011, 3)}, 997 {QMI_FIXED_INTF(0x05c6, 0x9011, 4)}, 998 {QMI_FIXED_INTF(0x05c6, 0x9021, 1)}, 999 {QMI_FIXED_INTF(0x05c6, 0x9022, 2)}, 1000 {QMI_FIXED_INTF(0x05c6, 0x9025, 4)}, /* Alcatel-sbell ASB TL131 TDD LTE (China Mobile) */ 1001 {QMI_FIXED_INTF(0x05c6, 0x9026, 3)}, 1002 {QMI_FIXED_INTF(0x05c6, 0x902e, 5)}, 1003 {QMI_FIXED_INTF(0x05c6, 0x9031, 5)}, 1004 {QMI_FIXED_INTF(0x05c6, 0x9032, 4)}, 1005 {QMI_FIXED_INTF(0x05c6, 0x9033, 3)}, 1006 {QMI_FIXED_INTF(0x05c6, 0x9033, 4)}, 1007 {QMI_FIXED_INTF(0x05c6, 0x9033, 5)}, 1008 {QMI_FIXED_INTF(0x05c6, 0x9033, 6)}, 1009 {QMI_FIXED_INTF(0x05c6, 0x9034, 3)}, 1010 {QMI_FIXED_INTF(0x05c6, 0x9034, 4)}, 1011 {QMI_FIXED_INTF(0x05c6, 0x9034, 5)}, 1012 {QMI_FIXED_INTF(0x05c6, 0x9034, 6)}, 1013 {QMI_FIXED_INTF(0x05c6, 0x9034, 7)}, 1014 {QMI_FIXED_INTF(0x05c6, 0x9035, 4)}, 1015 {QMI_FIXED_INTF(0x05c6, 0x9036, 3)}, 1016 {QMI_FIXED_INTF(0x05c6, 0x9037, 5)}, 1017 {QMI_FIXED_INTF(0x05c6, 0x9038, 4)}, 1018 {QMI_FIXED_INTF(0x05c6, 0x903b, 7)}, 1019 {QMI_FIXED_INTF(0x05c6, 0x903c, 6)}, 1020 {QMI_FIXED_INTF(0x05c6, 0x903d, 6)}, 1021 {QMI_FIXED_INTF(0x05c6, 0x903e, 5)}, 1022 {QMI_FIXED_INTF(0x05c6, 0x9043, 3)}, 1023 {QMI_FIXED_INTF(0x05c6, 0x9046, 3)}, 1024 {QMI_FIXED_INTF(0x05c6, 0x9046, 4)}, 1025 {QMI_FIXED_INTF(0x05c6, 0x9046, 5)}, 1026 {QMI_FIXED_INTF(0x05c6, 0x9047, 2)}, 1027 {QMI_FIXED_INTF(0x05c6, 0x9047, 3)}, 1028 {QMI_FIXED_INTF(0x05c6, 0x9047, 4)}, 1029 {QMI_FIXED_INTF(0x05c6, 0x9048, 4)}, 1030 {QMI_FIXED_INTF(0x05c6, 0x9048, 5)}, 1031 {QMI_FIXED_INTF(0x05c6, 0x9048, 6)}, 1032 {QMI_FIXED_INTF(0x05c6, 0x9048, 7)}, 1033 {QMI_FIXED_INTF(0x05c6, 0x9048, 8)}, 1034 {QMI_FIXED_INTF(0x05c6, 0x904c, 5)}, 1035 {QMI_FIXED_INTF(0x05c6, 0x904c, 6)}, 1036 {QMI_FIXED_INTF(0x05c6, 0x904c, 7)}, 1037 {QMI_FIXED_INTF(0x05c6, 0x904c, 8)}, 1038 {QMI_FIXED_INTF(0x05c6, 0x9050, 3)}, 1039 {QMI_FIXED_INTF(0x05c6, 0x9052, 4)}, 1040 {QMI_FIXED_INTF(0x05c6, 0x9053, 6)}, 1041 {QMI_FIXED_INTF(0x05c6, 0x9053, 7)}, 1042 {QMI_FIXED_INTF(0x05c6, 0x9054, 5)}, 1043 {QMI_FIXED_INTF(0x05c6, 0x9054, 6)}, 1044 {QMI_FIXED_INTF(0x05c6, 0x9055, 3)}, 1045 {QMI_FIXED_INTF(0x05c6, 0x9055, 4)}, 1046 {QMI_FIXED_INTF(0x05c6, 0x9055, 5)}, 1047 {QMI_FIXED_INTF(0x05c6, 0x9055, 6)}, 1048 {QMI_FIXED_INTF(0x05c6, 0x9055, 7)}, 1049 {QMI_FIXED_INTF(0x05c6, 0x9056, 3)}, 1050 {QMI_FIXED_INTF(0x05c6, 0x9062, 2)}, 1051 {QMI_FIXED_INTF(0x05c6, 0x9062, 3)}, 1052 {QMI_FIXED_INTF(0x05c6, 0x9062, 4)}, 1053 {QMI_FIXED_INTF(0x05c6, 0x9062, 5)}, 1054 {QMI_FIXED_INTF(0x05c6, 0x9062, 6)}, 1055 {QMI_FIXED_INTF(0x05c6, 0x9062, 7)}, 1056 {QMI_FIXED_INTF(0x05c6, 0x9062, 8)}, 1057 {QMI_FIXED_INTF(0x05c6, 0x9062, 9)}, 1058 {QMI_FIXED_INTF(0x05c6, 0x9064, 3)}, 1059 {QMI_FIXED_INTF(0x05c6, 0x9065, 6)}, 1060 {QMI_FIXED_INTF(0x05c6, 0x9065, 7)}, 1061 {QMI_FIXED_INTF(0x05c6, 0x9066, 5)}, 1062 {QMI_FIXED_INTF(0x05c6, 0x9066, 6)}, 1063 {QMI_FIXED_INTF(0x05c6, 0x9067, 1)}, 1064 {QMI_FIXED_INTF(0x05c6, 0x9068, 2)}, 1065 {QMI_FIXED_INTF(0x05c6, 0x9068, 3)}, 1066 {QMI_FIXED_INTF(0x05c6, 0x9068, 4)}, 1067 {QMI_FIXED_INTF(0x05c6, 0x9068, 5)}, 1068 {QMI_FIXED_INTF(0x05c6, 0x9068, 6)}, 1069 {QMI_FIXED_INTF(0x05c6, 0x9068, 7)}, 1070 {QMI_FIXED_INTF(0x05c6, 0x9069, 5)}, 1071 {QMI_FIXED_INTF(0x05c6, 0x9069, 6)}, 1072 {QMI_FIXED_INTF(0x05c6, 0x9069, 7)}, 1073 {QMI_FIXED_INTF(0x05c6, 0x9069, 8)}, 1074 {QMI_FIXED_INTF(0x05c6, 0x9070, 4)}, 1075 {QMI_FIXED_INTF(0x05c6, 0x9070, 5)}, 1076 {QMI_FIXED_INTF(0x05c6, 0x9075, 5)}, 1077 {QMI_FIXED_INTF(0x05c6, 0x9076, 4)}, 1078 {QMI_FIXED_INTF(0x05c6, 0x9076, 5)}, 1079 {QMI_FIXED_INTF(0x05c6, 0x9076, 6)}, 1080 {QMI_FIXED_INTF(0x05c6, 0x9076, 7)}, 1081 {QMI_FIXED_INTF(0x05c6, 0x9076, 8)}, 1082 {QMI_FIXED_INTF(0x05c6, 0x9077, 3)}, 1083 {QMI_FIXED_INTF(0x05c6, 0x9077, 4)}, 1084 {QMI_FIXED_INTF(0x05c6, 0x9077, 5)}, 1085 {QMI_FIXED_INTF(0x05c6, 0x9077, 6)}, 1086 {QMI_FIXED_INTF(0x05c6, 0x9078, 3)}, 1087 {QMI_FIXED_INTF(0x05c6, 0x9079, 4)}, 1088 {QMI_FIXED_INTF(0x05c6, 0x9079, 5)}, 1089 {QMI_FIXED_INTF(0x05c6, 0x9079, 6)}, 1090 {QMI_FIXED_INTF(0x05c6, 0x9079, 7)}, 1091 {QMI_FIXED_INTF(0x05c6, 0x9079, 8)}, 1092 {QMI_FIXED_INTF(0x05c6, 0x9080, 5)}, 1093 {QMI_FIXED_INTF(0x05c6, 0x9080, 6)}, 1094 {QMI_FIXED_INTF(0x05c6, 0x9080, 7)}, 1095 {QMI_FIXED_INTF(0x05c6, 0x9080, 8)}, 1096 {QMI_FIXED_INTF(0x05c6, 0x9083, 3)}, 1097 {QMI_FIXED_INTF(0x05c6, 0x9084, 4)}, 1098 {QMI_FIXED_INTF(0x05c6, 0x920d, 0)}, 1099 {QMI_FIXED_INTF(0x05c6, 0x920d, 5)}, 1100 {QMI_FIXED_INTF(0x0846, 0x68a2, 8)}, 1101 {QMI_FIXED_INTF(0x12d1, 0x140c, 1)}, /* Huawei E173 */ 1102 {QMI_FIXED_INTF(0x12d1, 0x14ac, 1)}, /* Huawei E1820 */ 1103 {QMI_FIXED_INTF(0x16d8, 0x6003, 0)}, /* CMOTech 6003 */ 1104 {QMI_FIXED_INTF(0x16d8, 0x6007, 0)}, /* CMOTech CHE-628S */ 1105 {QMI_FIXED_INTF(0x16d8, 0x6008, 0)}, /* CMOTech CMU-301 */ 1106 {QMI_FIXED_INTF(0x16d8, 0x6280, 0)}, /* CMOTech CHU-628 */ 1107 {QMI_FIXED_INTF(0x16d8, 0x7001, 0)}, /* CMOTech CHU-720S */ 1108 {QMI_FIXED_INTF(0x16d8, 0x7002, 0)}, /* CMOTech 7002 */ 1109 {QMI_FIXED_INTF(0x16d8, 0x7003, 4)}, /* CMOTech CHU-629K */ 1110 {QMI_FIXED_INTF(0x16d8, 0x7004, 3)}, /* CMOTech 7004 */ 1111 {QMI_FIXED_INTF(0x16d8, 0x7006, 5)}, /* CMOTech CGU-629 */ 1112 {QMI_FIXED_INTF(0x16d8, 0x700a, 4)}, /* CMOTech CHU-629S */ 1113 {QMI_FIXED_INTF(0x16d8, 0x7211, 0)}, /* CMOTech CHU-720I */ 1114 {QMI_FIXED_INTF(0x16d8, 0x7212, 0)}, /* CMOTech 7212 */ 1115 {QMI_FIXED_INTF(0x16d8, 0x7213, 0)}, /* CMOTech 7213 */ 1116 {QMI_FIXED_INTF(0x16d8, 0x7251, 1)}, /* CMOTech 7251 */ 1117 {QMI_FIXED_INTF(0x16d8, 0x7252, 1)}, /* CMOTech 7252 */ 1118 {QMI_FIXED_INTF(0x16d8, 0x7253, 1)}, /* CMOTech 7253 */ 1119 {QMI_FIXED_INTF(0x19d2, 0x0002, 1)}, 1120 {QMI_FIXED_INTF(0x19d2, 0x0012, 1)}, 1121 {QMI_FIXED_INTF(0x19d2, 0x0017, 3)}, 1122 {QMI_FIXED_INTF(0x19d2, 0x0019, 3)}, /* ONDA MT689DC */ 1123 {QMI_FIXED_INTF(0x19d2, 0x0021, 4)}, 1124 {QMI_FIXED_INTF(0x19d2, 0x0025, 1)}, 1125 {QMI_FIXED_INTF(0x19d2, 0x0031, 4)}, 1126 {QMI_FIXED_INTF(0x19d2, 0x0042, 4)}, 1127 {QMI_FIXED_INTF(0x19d2, 0x0049, 5)}, 1128 {QMI_FIXED_INTF(0x19d2, 0x0052, 4)}, 1129 {QMI_FIXED_INTF(0x19d2, 0x0055, 1)}, /* ZTE (Vodafone) K3520-Z */ 1130 {QMI_FIXED_INTF(0x19d2, 0x0058, 4)}, 1131 {QMI_FIXED_INTF(0x19d2, 0x0063, 4)}, /* ZTE (Vodafone) K3565-Z */ 1132 {QMI_FIXED_INTF(0x19d2, 0x0104, 4)}, /* ZTE (Vodafone) K4505-Z */ 1133 {QMI_FIXED_INTF(0x19d2, 0x0113, 5)}, 1134 {QMI_FIXED_INTF(0x19d2, 0x0118, 5)}, 1135 {QMI_FIXED_INTF(0x19d2, 0x0121, 5)}, 1136 {QMI_FIXED_INTF(0x19d2, 0x0123, 4)}, 1137 {QMI_FIXED_INTF(0x19d2, 0x0124, 5)}, 1138 {QMI_FIXED_INTF(0x19d2, 0x0125, 6)}, 1139 {QMI_FIXED_INTF(0x19d2, 0x0126, 5)}, 1140 {QMI_FIXED_INTF(0x19d2, 0x0130, 1)}, 1141 {QMI_FIXED_INTF(0x19d2, 0x0133, 3)}, 1142 {QMI_FIXED_INTF(0x19d2, 0x0141, 5)}, 1143 {QMI_FIXED_INTF(0x19d2, 0x0157, 5)}, /* ZTE MF683 */ 1144 {QMI_FIXED_INTF(0x19d2, 0x0158, 3)}, 1145 {QMI_FIXED_INTF(0x19d2, 0x0167, 4)}, /* ZTE MF820D */ 1146 {QMI_FIXED_INTF(0x19d2, 0x0168, 4)}, 1147 {QMI_FIXED_INTF(0x19d2, 0x0176, 3)}, 1148 {QMI_FIXED_INTF(0x19d2, 0x0178, 3)}, 1149 {QMI_FIXED_INTF(0x19d2, 0x0191, 4)}, /* ZTE EuFi890 */ 1150 {QMI_FIXED_INTF(0x19d2, 0x0199, 1)}, /* ZTE MF820S */ 1151 {QMI_FIXED_INTF(0x19d2, 0x0200, 1)}, 1152 {QMI_FIXED_INTF(0x19d2, 0x0257, 3)}, /* ZTE MF821 */ 1153 {QMI_FIXED_INTF(0x19d2, 0x0265, 4)}, /* ONDA MT8205 4G LTE */ 1154 {QMI_FIXED_INTF(0x19d2, 0x0284, 4)}, /* ZTE MF880 */ 1155 {QMI_FIXED_INTF(0x19d2, 0x0326, 4)}, /* ZTE MF821D */ 1156 {QMI_FIXED_INTF(0x19d2, 0x0412, 4)}, /* Telewell TW-LTE 4G */ 1157 {QMI_FIXED_INTF(0x19d2, 0x1008, 4)}, /* ZTE (Vodafone) K3570-Z */ 1158 {QMI_FIXED_INTF(0x19d2, 0x1010, 4)}, /* ZTE (Vodafone) K3571-Z */ 1159 {QMI_FIXED_INTF(0x19d2, 0x1012, 4)}, 1160 {QMI_FIXED_INTF(0x19d2, 0x1018, 3)}, /* ZTE (Vodafone) K5006-Z */ 1161 {QMI_FIXED_INTF(0x19d2, 0x1021, 2)}, 1162 {QMI_FIXED_INTF(0x19d2, 0x1245, 4)}, 1163 {QMI_FIXED_INTF(0x19d2, 0x1247, 4)}, 1164 {QMI_FIXED_INTF(0x19d2, 0x1252, 4)}, 1165 {QMI_FIXED_INTF(0x19d2, 0x1254, 4)}, 1166 {QMI_FIXED_INTF(0x19d2, 0x1255, 3)}, 1167 {QMI_FIXED_INTF(0x19d2, 0x1255, 4)}, 1168 {QMI_FIXED_INTF(0x19d2, 0x1256, 4)}, 1169 {QMI_FIXED_INTF(0x19d2, 0x1270, 5)}, /* ZTE MF667 */ 1170 {QMI_FIXED_INTF(0x19d2, 0x1401, 2)}, 1171 {QMI_FIXED_INTF(0x19d2, 0x1402, 2)}, /* ZTE MF60 */ 1172 {QMI_FIXED_INTF(0x19d2, 0x1424, 2)}, 1173 {QMI_FIXED_INTF(0x19d2, 0x1425, 2)}, 1174 {QMI_FIXED_INTF(0x19d2, 0x1426, 2)}, /* ZTE MF91 */ 1175 {QMI_FIXED_INTF(0x19d2, 0x1428, 2)}, /* Telewell TW-LTE 4G v2 */ 1176 {QMI_FIXED_INTF(0x19d2, 0x2002, 4)}, /* ZTE (Vodafone) K3765-Z */ 1177 {QMI_FIXED_INTF(0x2001, 0x7e19, 4)}, /* D-Link DWM-221 B1 */ 1178 {QMI_FIXED_INTF(0x2001, 0x7e35, 4)}, /* D-Link DWM-222 */ 1179 {QMI_FIXED_INTF(0x0f3d, 0x68a2, 8)}, /* Sierra Wireless MC7700 */ 1180 {QMI_FIXED_INTF(0x114f, 0x68a2, 8)}, /* Sierra Wireless MC7750 */ 1181 {QMI_FIXED_INTF(0x1199, 0x68a2, 8)}, /* Sierra Wireless MC7710 in QMI mode */ 1182 {QMI_FIXED_INTF(0x1199, 0x68a2, 19)}, /* Sierra Wireless MC7710 in QMI mode */ 1183 {QMI_FIXED_INTF(0x1199, 0x68c0, 8)}, /* Sierra Wireless MC7304/MC7354 */ 1184 {QMI_FIXED_INTF(0x1199, 0x68c0, 10)}, /* Sierra Wireless MC7304/MC7354 */ 1185 {QMI_FIXED_INTF(0x1199, 0x901c, 8)}, /* Sierra Wireless EM7700 */ 1186 {QMI_FIXED_INTF(0x1199, 0x901f, 8)}, /* Sierra Wireless EM7355 */ 1187 {QMI_FIXED_INTF(0x1199, 0x9041, 8)}, /* Sierra Wireless MC7305/MC7355 */ 1188 {QMI_FIXED_INTF(0x1199, 0x9041, 10)}, /* Sierra Wireless MC7305/MC7355 */ 1189 {QMI_FIXED_INTF(0x1199, 0x9051, 8)}, /* Netgear AirCard 340U */ 1190 {QMI_FIXED_INTF(0x1199, 0x9053, 8)}, /* Sierra Wireless Modem */ 1191 {QMI_FIXED_INTF(0x1199, 0x9054, 8)}, /* Sierra Wireless Modem */ 1192 {QMI_FIXED_INTF(0x1199, 0x9055, 8)}, /* Netgear AirCard 341U */ 1193 {QMI_FIXED_INTF(0x1199, 0x9056, 8)}, /* Sierra Wireless Modem */ 1194 {QMI_FIXED_INTF(0x1199, 0x9057, 8)}, 1195 {QMI_FIXED_INTF(0x1199, 0x9061, 8)}, /* Sierra Wireless Modem */ 1196 {QMI_FIXED_INTF(0x1199, 0x9063, 8)}, /* Sierra Wireless EM7305 */ 1197 {QMI_FIXED_INTF(0x1199, 0x9063, 10)}, /* Sierra Wireless EM7305 */ 1198 {QMI_FIXED_INTF(0x1199, 0x9071, 8)}, /* Sierra Wireless MC74xx */ 1199 {QMI_FIXED_INTF(0x1199, 0x9071, 10)}, /* Sierra Wireless MC74xx */ 1200 {QMI_FIXED_INTF(0x1199, 0x9079, 8)}, /* Sierra Wireless EM74xx */ 1201 {QMI_FIXED_INTF(0x1199, 0x9079, 10)}, /* Sierra Wireless EM74xx */ 1202 {QMI_FIXED_INTF(0x1199, 0x907b, 8)}, /* Sierra Wireless EM74xx */ 1203 {QMI_FIXED_INTF(0x1199, 0x907b, 10)}, /* Sierra Wireless EM74xx */ 1204 {QMI_FIXED_INTF(0x1bbb, 0x011e, 4)}, /* Telekom Speedstick LTE II (Alcatel One Touch L100V LTE) */ 1205 {QMI_FIXED_INTF(0x1bbb, 0x0203, 2)}, /* Alcatel L800MA */ 1206 {QMI_FIXED_INTF(0x2357, 0x0201, 4)}, /* TP-LINK HSUPA Modem MA180 */ 1207 {QMI_FIXED_INTF(0x2357, 0x9000, 4)}, /* TP-LINK MA260 */ 1208 {QMI_QUIRK_SET_DTR(0x1bc7, 0x1040, 2)}, /* Telit LE922A */ 1209 {QMI_FIXED_INTF(0x1bc7, 0x1100, 3)}, /* Telit ME910 */ 1210 {QMI_FIXED_INTF(0x1bc7, 0x1200, 5)}, /* Telit LE920 */ 1211 {QMI_QUIRK_SET_DTR(0x1bc7, 0x1201, 2)}, /* Telit LE920, LE920A4 */ 1212 {QMI_FIXED_INTF(0x1c9e, 0x9801, 3)}, /* Telewell TW-3G HSPA+ */ 1213 {QMI_FIXED_INTF(0x1c9e, 0x9803, 4)}, /* Telewell TW-3G HSPA+ */ 1214 {QMI_FIXED_INTF(0x1c9e, 0x9b01, 3)}, /* XS Stick W100-2 from 4G Systems */ 1215 {QMI_FIXED_INTF(0x0b3c, 0xc000, 4)}, /* Olivetti Olicard 100 */ 1216 {QMI_FIXED_INTF(0x0b3c, 0xc001, 4)}, /* Olivetti Olicard 120 */ 1217 {QMI_FIXED_INTF(0x0b3c, 0xc002, 4)}, /* Olivetti Olicard 140 */ 1218 {QMI_FIXED_INTF(0x0b3c, 0xc004, 6)}, /* Olivetti Olicard 155 */ 1219 {QMI_FIXED_INTF(0x0b3c, 0xc005, 6)}, /* Olivetti Olicard 200 */ 1220 {QMI_FIXED_INTF(0x0b3c, 0xc00a, 6)}, /* Olivetti Olicard 160 */ 1221 {QMI_FIXED_INTF(0x0b3c, 0xc00b, 4)}, /* Olivetti Olicard 500 */ 1222 {QMI_FIXED_INTF(0x1e2d, 0x0060, 4)}, /* Cinterion PLxx */ 1223 {QMI_FIXED_INTF(0x1e2d, 0x0053, 4)}, /* Cinterion PHxx,PXxx */ 1224 {QMI_FIXED_INTF(0x1e2d, 0x0082, 4)}, /* Cinterion PHxx,PXxx (2 RmNet) */ 1225 {QMI_FIXED_INTF(0x1e2d, 0x0082, 5)}, /* Cinterion PHxx,PXxx (2 RmNet) */ 1226 {QMI_FIXED_INTF(0x1e2d, 0x0083, 4)}, /* Cinterion PHxx,PXxx (1 RmNet + USB Audio)*/ 1227 {QMI_FIXED_INTF(0x413c, 0x81a2, 8)}, /* Dell Wireless 5806 Gobi(TM) 4G LTE Mobile Broadband Card */ 1228 {QMI_FIXED_INTF(0x413c, 0x81a3, 8)}, /* Dell Wireless 5570 HSPA+ (42Mbps) Mobile Broadband Card */ 1229 {QMI_FIXED_INTF(0x413c, 0x81a4, 8)}, /* Dell Wireless 5570e HSPA+ (42Mbps) Mobile Broadband Card */ 1230 {QMI_FIXED_INTF(0x413c, 0x81a8, 8)}, /* Dell Wireless 5808 Gobi(TM) 4G LTE Mobile Broadband Card */ 1231 {QMI_FIXED_INTF(0x413c, 0x81a9, 8)}, /* Dell Wireless 5808e Gobi(TM) 4G LTE Mobile Broadband Card */ 1232 {QMI_FIXED_INTF(0x413c, 0x81b1, 8)}, /* Dell Wireless 5809e Gobi(TM) 4G LTE Mobile Broadband Card */ 1233 {QMI_FIXED_INTF(0x413c, 0x81b3, 8)}, /* Dell Wireless 5809e Gobi(TM) 4G LTE Mobile Broadband Card (rev3) */ 1234 {QMI_FIXED_INTF(0x413c, 0x81b6, 8)}, /* Dell Wireless 5811e */ 1235 {QMI_FIXED_INTF(0x413c, 0x81b6, 10)}, /* Dell Wireless 5811e */ 1236 {QMI_FIXED_INTF(0x03f0, 0x4e1d, 8)}, /* HP lt4111 LTE/EV-DO/HSPA+ Gobi 4G Module */ 1237 {QMI_FIXED_INTF(0x22de, 0x9061, 3)}, /* WeTelecom WPD-600N */ 1238 {QMI_FIXED_INTF(0x1e0e, 0x9001, 5)}, /* SIMCom 7230E */ 1239 {QMI_QUIRK_SET_DTR(0x2c7c, 0x0125, 4)}, /* Quectel EC25, EC20 R2.0 Mini PCIe */ 1240 {QMI_QUIRK_SET_DTR(0x2c7c, 0x0121, 4)}, /* Quectel EC21 Mini PCIe */ 1241 1242 /* 4. Gobi 1000 devices */ 1243 {QMI_GOBI1K_DEVICE(0x05c6, 0x9212)}, /* Acer Gobi Modem Device */ 1244 {QMI_GOBI1K_DEVICE(0x03f0, 0x1f1d)}, /* HP un2400 Gobi Modem Device */ 1245 {QMI_GOBI1K_DEVICE(0x04da, 0x250d)}, /* Panasonic Gobi Modem device */ 1246 {QMI_GOBI1K_DEVICE(0x413c, 0x8172)}, /* Dell Gobi Modem device */ 1247 {QMI_GOBI1K_DEVICE(0x1410, 0xa001)}, /* Novatel/Verizon USB-1000 */ 1248 {QMI_GOBI1K_DEVICE(0x1410, 0xa002)}, /* Novatel Gobi Modem device */ 1249 {QMI_GOBI1K_DEVICE(0x1410, 0xa003)}, /* Novatel Gobi Modem device */ 1250 {QMI_GOBI1K_DEVICE(0x1410, 0xa004)}, /* Novatel Gobi Modem device */ 1251 {QMI_GOBI1K_DEVICE(0x1410, 0xa005)}, /* Novatel Gobi Modem device */ 1252 {QMI_GOBI1K_DEVICE(0x1410, 0xa006)}, /* Novatel Gobi Modem device */ 1253 {QMI_GOBI1K_DEVICE(0x1410, 0xa007)}, /* Novatel Gobi Modem device */ 1254 {QMI_GOBI1K_DEVICE(0x0b05, 0x1776)}, /* Asus Gobi Modem device */ 1255 {QMI_GOBI1K_DEVICE(0x19d2, 0xfff3)}, /* ONDA Gobi Modem device */ 1256 {QMI_GOBI1K_DEVICE(0x05c6, 0x9001)}, /* Generic Gobi Modem device */ 1257 {QMI_GOBI1K_DEVICE(0x05c6, 0x9002)}, /* Generic Gobi Modem device */ 1258 {QMI_GOBI1K_DEVICE(0x05c6, 0x9202)}, /* Generic Gobi Modem device */ 1259 {QMI_GOBI1K_DEVICE(0x05c6, 0x9203)}, /* Generic Gobi Modem device */ 1260 {QMI_GOBI1K_DEVICE(0x05c6, 0x9222)}, /* Generic Gobi Modem device */ 1261 {QMI_GOBI1K_DEVICE(0x05c6, 0x9009)}, /* Generic Gobi Modem device */ 1262 1263 /* 5. Gobi 2000 and 3000 devices */ 1264 {QMI_GOBI_DEVICE(0x413c, 0x8186)}, /* Dell Gobi 2000 Modem device (N0218, VU936) */ 1265 {QMI_GOBI_DEVICE(0x413c, 0x8194)}, /* Dell Gobi 3000 Composite */ 1266 {QMI_GOBI_DEVICE(0x05c6, 0x920b)}, /* Generic Gobi 2000 Modem device */ 1267 {QMI_GOBI_DEVICE(0x05c6, 0x9225)}, /* Sony Gobi 2000 Modem device (N0279, VU730) */ 1268 {QMI_GOBI_DEVICE(0x05c6, 0x9245)}, /* Samsung Gobi 2000 Modem device (VL176) */ 1269 {QMI_GOBI_DEVICE(0x03f0, 0x251d)}, /* HP Gobi 2000 Modem device (VP412) */ 1270 {QMI_GOBI_DEVICE(0x05c6, 0x9215)}, /* Acer Gobi 2000 Modem device (VP413) */ 1271 {QMI_FIXED_INTF(0x05c6, 0x9215, 4)}, /* Quectel EC20 Mini PCIe */ 1272 {QMI_GOBI_DEVICE(0x05c6, 0x9265)}, /* Asus Gobi 2000 Modem device (VR305) */ 1273 {QMI_GOBI_DEVICE(0x05c6, 0x9235)}, /* Top Global Gobi 2000 Modem device (VR306) */ 1274 {QMI_GOBI_DEVICE(0x05c6, 0x9275)}, /* iRex Technologies Gobi 2000 Modem device (VR307) */ 1275 {QMI_GOBI_DEVICE(0x0af0, 0x8120)}, /* Option GTM681W */ 1276 {QMI_GOBI_DEVICE(0x1199, 0x68a5)}, /* Sierra Wireless Modem */ 1277 {QMI_GOBI_DEVICE(0x1199, 0x68a9)}, /* Sierra Wireless Modem */ 1278 {QMI_GOBI_DEVICE(0x1199, 0x9001)}, /* Sierra Wireless Gobi 2000 Modem device (VT773) */ 1279 {QMI_GOBI_DEVICE(0x1199, 0x9002)}, /* Sierra Wireless Gobi 2000 Modem device (VT773) */ 1280 {QMI_GOBI_DEVICE(0x1199, 0x9003)}, /* Sierra Wireless Gobi 2000 Modem device (VT773) */ 1281 {QMI_GOBI_DEVICE(0x1199, 0x9004)}, /* Sierra Wireless Gobi 2000 Modem device (VT773) */ 1282 {QMI_GOBI_DEVICE(0x1199, 0x9005)}, /* Sierra Wireless Gobi 2000 Modem device (VT773) */ 1283 {QMI_GOBI_DEVICE(0x1199, 0x9006)}, /* Sierra Wireless Gobi 2000 Modem device (VT773) */ 1284 {QMI_GOBI_DEVICE(0x1199, 0x9007)}, /* Sierra Wireless Gobi 2000 Modem device (VT773) */ 1285 {QMI_GOBI_DEVICE(0x1199, 0x9008)}, /* Sierra Wireless Gobi 2000 Modem device (VT773) */ 1286 {QMI_GOBI_DEVICE(0x1199, 0x9009)}, /* Sierra Wireless Gobi 2000 Modem device (VT773) */ 1287 {QMI_GOBI_DEVICE(0x1199, 0x900a)}, /* Sierra Wireless Gobi 2000 Modem device (VT773) */ 1288 {QMI_GOBI_DEVICE(0x1199, 0x9011)}, /* Sierra Wireless Gobi 2000 Modem device (MC8305) */ 1289 {QMI_GOBI_DEVICE(0x16d8, 0x8002)}, /* CMDTech Gobi 2000 Modem device (VU922) */ 1290 {QMI_GOBI_DEVICE(0x05c6, 0x9205)}, /* Gobi 2000 Modem device */ 1291 {QMI_GOBI_DEVICE(0x1199, 0x9013)}, /* Sierra Wireless Gobi 3000 Modem device (MC8355) */ 1292 {QMI_GOBI_DEVICE(0x03f0, 0x371d)}, /* HP un2430 Mobile Broadband Module */ 1293 {QMI_GOBI_DEVICE(0x1199, 0x9015)}, /* Sierra Wireless Gobi 3000 Modem device */ 1294 {QMI_GOBI_DEVICE(0x1199, 0x9019)}, /* Sierra Wireless Gobi 3000 Modem device */ 1295 {QMI_GOBI_DEVICE(0x1199, 0x901b)}, /* Sierra Wireless MC7770 */ 1296 {QMI_GOBI_DEVICE(0x12d1, 0x14f1)}, /* Sony Gobi 3000 Composite */ 1297 {QMI_GOBI_DEVICE(0x1410, 0xa021)}, /* Foxconn Gobi 3000 Modem device (Novatel E396) */ 1298 1299 { } /* END */ 1300 }; 1301 MODULE_DEVICE_TABLE(usb, products); 1302 1303 static bool quectel_ec20_detected(struct usb_interface *intf) 1304 { 1305 struct usb_device *dev = interface_to_usbdev(intf); 1306 1307 if (dev->actconfig && 1308 le16_to_cpu(dev->descriptor.idVendor) == 0x05c6 && 1309 le16_to_cpu(dev->descriptor.idProduct) == 0x9215 && 1310 dev->actconfig->desc.bNumInterfaces == 5) 1311 return true; 1312 1313 return false; 1314 } 1315 1316 static int qmi_wwan_probe(struct usb_interface *intf, 1317 const struct usb_device_id *prod) 1318 { 1319 struct usb_device_id *id = (struct usb_device_id *)prod; 1320 struct usb_interface_descriptor *desc = &intf->cur_altsetting->desc; 1321 1322 /* Workaround to enable dynamic IDs. This disables usbnet 1323 * blacklisting functionality. Which, if required, can be 1324 * reimplemented here by using a magic "blacklist" value 1325 * instead of 0 in the static device id table 1326 */ 1327 if (!id->driver_info) { 1328 dev_dbg(&intf->dev, "setting defaults for dynamic device id\n"); 1329 id->driver_info = (unsigned long)&qmi_wwan_info; 1330 } 1331 1332 /* Quectel EC20 quirk where we've QMI on interface 4 instead of 0 */ 1333 if (quectel_ec20_detected(intf) && desc->bInterfaceNumber == 0) { 1334 dev_dbg(&intf->dev, "Quectel EC20 quirk, skipping interface 0\n"); 1335 return -ENODEV; 1336 } 1337 1338 return usbnet_probe(intf, id); 1339 } 1340 1341 static void qmi_wwan_disconnect(struct usb_interface *intf) 1342 { 1343 struct usbnet *dev = usb_get_intfdata(intf); 1344 struct qmi_wwan_state *info; 1345 struct list_head *iter; 1346 struct net_device *ldev; 1347 1348 /* called twice if separate control and data intf */ 1349 if (!dev) 1350 return; 1351 info = (void *)&dev->data; 1352 if (info->flags & QMI_WWAN_FLAG_MUX) { 1353 if (!rtnl_trylock()) { 1354 restart_syscall(); 1355 return; 1356 } 1357 rcu_read_lock(); 1358 netdev_for_each_upper_dev_rcu(dev->net, ldev, iter) 1359 qmimux_unregister_device(ldev); 1360 rcu_read_unlock(); 1361 rtnl_unlock(); 1362 info->flags &= ~QMI_WWAN_FLAG_MUX; 1363 } 1364 usbnet_disconnect(intf); 1365 } 1366 1367 static struct usb_driver qmi_wwan_driver = { 1368 .name = "qmi_wwan", 1369 .id_table = products, 1370 .probe = qmi_wwan_probe, 1371 .disconnect = qmi_wwan_disconnect, 1372 .suspend = qmi_wwan_suspend, 1373 .resume = qmi_wwan_resume, 1374 .reset_resume = qmi_wwan_resume, 1375 .supports_autosuspend = 1, 1376 .disable_hub_initiated_lpm = 1, 1377 }; 1378 1379 module_usb_driver(qmi_wwan_driver); 1380 1381 MODULE_AUTHOR("Bjørn Mork <bjorn@mork.no>"); 1382 MODULE_DESCRIPTION("Qualcomm MSM Interface (QMI) WWAN driver"); 1383 MODULE_LICENSE("GPL"); 1384