drivers/net/usb/qmi

/* [<][>][^][v][top][bottom][index][help] */
This source file includes following definitions.
qmimux_open
qmimux_stop
qmimux_start_xmit
qmimux_get_stats64
qmimux_setup
qmimux_find_dev
qmimux_has_slaves
qmimux_rx_fixup
qmimux_register_device
qmimux_unregister_device
qmi_wwan_netdev_setup
raw_ip_show
raw_ip_store
add_mux_show
add_mux_store
del_mux_show
del_mux_store
qmi_wwan_rx_fixup
possibly_iphdr
qmi_wwan_mac_addr
qmi_wwan_manage_power
qmi_wwan_cdc_wdm_manage_power
qmi_wwan_register_subdriver
qmi_wwan_change_dtr
qmi_wwan_bind
qmi_wwan_unbind
qmi_wwan_suspend
qmi_wwan_resume
quectel_ec20_detected
qmi_wwan_probe
qmi_wwan_disconnect
   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Copyright (c) 2012  Bjørn Mork <bjorn@mork.no>
   4  *
   5  * The probing code is heavily inspired by cdc_ether, which is:
   6  * Copyright (C) 2003-2005 by David Brownell
   7  * Copyright (C) 2006 by Ole Andre Vadla Ravnas (ActiveSync)
   8  */
   9 
  10 #include <linux/module.h>
  11 #include <linux/sched/signal.h>
  12 #include <linux/netdevice.h>
  13 #include <linux/ethtool.h>
  14 #include <linux/etherdevice.h>
  15 #include <linux/if_arp.h>
  16 #include <linux/mii.h>
  17 #include <linux/rtnetlink.h>
  18 #include <linux/usb.h>
  19 #include <linux/usb/cdc.h>
  20 #include <linux/usb/usbnet.h>
  21 #include <linux/usb/cdc-wdm.h>
  22 #include <linux/u64_stats_sync.h>
  23 
  24 /* This driver supports wwan (3G/LTE/?) devices using a vendor
  25  * specific management protocol called Qualcomm MSM Interface (QMI) -
  26  * in addition to the more common AT commands over serial interface
  27  * management
  28  *
  29  * QMI is wrapped in CDC, using CDC encapsulated commands on the
  30  * control ("master") interface of a two-interface CDC Union
  31  * resembling standard CDC ECM.  The devices do not use the control
  32  * interface for any other CDC messages.  Most likely because the
  33  * management protocol is used in place of the standard CDC
  34  * notifications NOTIFY_NETWORK_CONNECTION and NOTIFY_SPEED_CHANGE
  35  *
  36  * Alternatively, control and data functions can be combined in a
  37  * single USB interface.
  38  *
  39  * Handling a protocol like QMI is out of the scope for any driver.
  40  * It is exported as a character device using the cdc-wdm driver as
  41  * a subdriver, enabling userspace applications ("modem managers") to
  42  * handle it.
  43  *
  44  * These devices may alternatively/additionally be configured using AT
  45  * commands on a serial interface
  46  */
  47 
  48 /* driver specific data */
  49 struct qmi_wwan_state {
  50         struct usb_driver *subdriver;
  51         atomic_t pmcount;
  52         unsigned long flags;
  53         struct usb_interface *control;
  54         struct usb_interface *data;
  55 };
  56 
  57 enum qmi_wwan_flags {
  58         QMI_WWAN_FLAG_RAWIP = 1 << 0,
  59         QMI_WWAN_FLAG_MUX = 1 << 1,
  60 };
  61 
  62 enum qmi_wwan_quirks {
  63         QMI_WWAN_QUIRK_DTR = 1 << 0,    /* needs "set DTR" request */
  64 };
  65 
  66 struct qmimux_hdr {
  67         u8 pad;
  68         u8 mux_id;
  69         __be16 pkt_len;
  70 };
  71 
  72 struct qmimux_priv {
  73         struct net_device *real_dev;
  74         u8 mux_id;
  75         struct pcpu_sw_netstats __percpu *stats64;
  76 };
  77 
  78 static int qmimux_open(struct net_device *dev)
  79 {
  80         struct qmimux_priv *priv = netdev_priv(dev);
  81         struct net_device *real_dev = priv->real_dev;
  82 
  83         if (!(priv->real_dev->flags & IFF_UP))
  84                 return -ENETDOWN;
  85 
  86         if (netif_carrier_ok(real_dev))
  87                 netif_carrier_on(dev);
  88         return 0;
  89 }
  90 
  91 static int qmimux_stop(struct net_device *dev)
  92 {
  93         netif_carrier_off(dev);
  94         return 0;
  95 }
  96 
  97 static netdev_tx_t qmimux_start_xmit(struct sk_buff *skb, struct net_device *dev)
  98 {
  99         struct qmimux_priv *priv = netdev_priv(dev);
 100         unsigned int len = skb->len;
 101         struct qmimux_hdr *hdr;
 102         netdev_tx_t ret;
 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         ret = dev_queue_xmit(skb);
 110 
 111         if (likely(ret == NET_XMIT_SUCCESS || ret == NET_XMIT_CN)) {
 112                 struct pcpu_sw_netstats *stats64 = this_cpu_ptr(priv->stats64);
 113 
 114                 u64_stats_update_begin(&stats64->syncp);
 115                 stats64->tx_packets++;
 116                 stats64->tx_bytes += len;
 117                 u64_stats_update_end(&stats64->syncp);
 118         } else {
 119                 dev->stats.tx_dropped++;
 120         }
 121 
 122         return ret;
 123 }
 124 
 125 static void qmimux_get_stats64(struct net_device *net,
 126                                struct rtnl_link_stats64 *stats)
 127 {
 128         struct qmimux_priv *priv = netdev_priv(net);
 129         unsigned int start;
 130         int cpu;
 131 
 132         netdev_stats_to_stats64(stats, &net->stats);
 133 
 134         for_each_possible_cpu(cpu) {
 135                 struct pcpu_sw_netstats *stats64;
 136                 u64 rx_packets, rx_bytes;
 137                 u64 tx_packets, tx_bytes;
 138 
 139                 stats64 = per_cpu_ptr(priv->stats64, cpu);
 140 
 141                 do {
 142                         start = u64_stats_fetch_begin_irq(&stats64->syncp);
 143                         rx_packets = stats64->rx_packets;
 144                         rx_bytes = stats64->rx_bytes;
 145                         tx_packets = stats64->tx_packets;
 146                         tx_bytes = stats64->tx_bytes;
 147                 } while (u64_stats_fetch_retry_irq(&stats64->syncp, start));
 148 
 149                 stats->rx_packets += rx_packets;
 150                 stats->rx_bytes += rx_bytes;
 151                 stats->tx_packets += tx_packets;
 152                 stats->tx_bytes += tx_bytes;
 153         }
 154 }
 155 
 156 static const struct net_device_ops qmimux_netdev_ops = {
 157         .ndo_open        = qmimux_open,
 158         .ndo_stop        = qmimux_stop,
 159         .ndo_start_xmit  = qmimux_start_xmit,
 160         .ndo_get_stats64 = qmimux_get_stats64,
 161 };
 162 
 163 static void qmimux_setup(struct net_device *dev)
 164 {
 165         dev->header_ops      = NULL;  /* No header */
 166         dev->type            = ARPHRD_NONE;
 167         dev->hard_header_len = 0;
 168         dev->addr_len        = 0;
 169         dev->flags           = IFF_POINTOPOINT | IFF_NOARP | IFF_MULTICAST;
 170         dev->netdev_ops      = &qmimux_netdev_ops;
 171         dev->mtu             = 1500;
 172         dev->needs_free_netdev = true;
 173 }
 174 
 175 static struct net_device *qmimux_find_dev(struct usbnet *dev, u8 mux_id)
 176 {
 177         struct qmimux_priv *priv;
 178         struct list_head *iter;
 179         struct net_device *ldev;
 180 
 181         rcu_read_lock();
 182         netdev_for_each_upper_dev_rcu(dev->net, ldev, iter) {
 183                 priv = netdev_priv(ldev);
 184                 if (priv->mux_id == mux_id) {
 185                         rcu_read_unlock();
 186                         return ldev;
 187                 }
 188         }
 189         rcu_read_unlock();
 190         return NULL;
 191 }
 192 
 193 static bool qmimux_has_slaves(struct usbnet *dev)
 194 {
 195         return !list_empty(&dev->net->adj_list.upper);
 196 }
 197 
 198 static int qmimux_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
 199 {
 200         unsigned int len, offset = 0, pad_len, pkt_len;
 201         struct qmimux_hdr *hdr;
 202         struct net_device *net;
 203         struct sk_buff *skbn;
 204         u8 qmimux_hdr_sz = sizeof(*hdr);
 205 
 206         while (offset + qmimux_hdr_sz < skb->len) {
 207                 hdr = (struct qmimux_hdr *)(skb->data + offset);
 208                 len = be16_to_cpu(hdr->pkt_len);
 209 
 210                 /* drop the packet, bogus length */
 211                 if (offset + len + qmimux_hdr_sz > skb->len)
 212                         return 0;
 213 
 214                 /* control packet, we do not know what to do */
 215                 if (hdr->pad & 0x80)
 216                         goto skip;
 217 
 218                 /* extract padding length and check for valid length info */
 219                 pad_len = hdr->pad & 0x3f;
 220                 if (len == 0 || pad_len >= len)
 221                         goto skip;
 222                 pkt_len = len - pad_len;
 223 
 224                 net = qmimux_find_dev(dev, hdr->mux_id);
 225                 if (!net)
 226                         goto skip;
 227                 skbn = netdev_alloc_skb(net, pkt_len);
 228                 if (!skbn)
 229                         return 0;
 230                 skbn->dev = net;
 231 
 232                 switch (skb->data[offset + qmimux_hdr_sz] & 0xf0) {
 233                 case 0x40:
 234                         skbn->protocol = htons(ETH_P_IP);
 235                         break;
 236                 case 0x60:
 237                         skbn->protocol = htons(ETH_P_IPV6);
 238                         break;
 239                 default:
 240                         /* not ip - do not know what to do */
 241                         goto skip;
 242                 }
 243 
 244                 skb_put_data(skbn, skb->data + offset + qmimux_hdr_sz, pkt_len);
 245                 if (netif_rx(skbn) != NET_RX_SUCCESS) {
 246                         net->stats.rx_errors++;
 247                         return 0;
 248                 } else {
 249                         struct pcpu_sw_netstats *stats64;
 250                         struct qmimux_priv *priv = netdev_priv(net);
 251 
 252                         stats64 = this_cpu_ptr(priv->stats64);
 253                         u64_stats_update_begin(&stats64->syncp);
 254                         stats64->rx_packets++;
 255                         stats64->rx_bytes += pkt_len;
 256                         u64_stats_update_end(&stats64->syncp);
 257                 }
 258 
 259 skip:
 260                 offset += len + qmimux_hdr_sz;
 261         }
 262         return 1;
 263 }
 264 
 265 static int qmimux_register_device(struct net_device *real_dev, u8 mux_id)
 266 {
 267         struct net_device *new_dev;
 268         struct qmimux_priv *priv;
 269         int err;
 270 
 271         new_dev = alloc_netdev(sizeof(struct qmimux_priv),
 272                                "qmimux%d", NET_NAME_UNKNOWN, qmimux_setup);
 273         if (!new_dev)
 274                 return -ENOBUFS;
 275 
 276         dev_net_set(new_dev, dev_net(real_dev));
 277         priv = netdev_priv(new_dev);
 278         priv->mux_id = mux_id;
 279         priv->real_dev = real_dev;
 280 
 281         priv->stats64 = netdev_alloc_pcpu_stats(struct pcpu_sw_netstats);
 282         if (!priv->stats64) {
 283                 err = -ENOBUFS;
 284                 goto out_free_newdev;
 285         }
 286 
 287         err = register_netdevice(new_dev);
 288         if (err < 0)
 289                 goto out_free_newdev;
 290 
 291         /* Account for reference in struct qmimux_priv_priv */
 292         dev_hold(real_dev);
 293 
 294         err = netdev_upper_dev_link(real_dev, new_dev, NULL);
 295         if (err)
 296                 goto out_unregister_netdev;
 297 
 298         netif_stacked_transfer_operstate(real_dev, new_dev);
 299 
 300         return 0;
 301 
 302 out_unregister_netdev:
 303         unregister_netdevice(new_dev);
 304         dev_put(real_dev);
 305 
 306 out_free_newdev:
 307         free_netdev(new_dev);
 308         return err;
 309 }
 310 
 311 static void qmimux_unregister_device(struct net_device *dev,
 312                                      struct list_head *head)
 313 {
 314         struct qmimux_priv *priv = netdev_priv(dev);
 315         struct net_device *real_dev = priv->real_dev;
 316 
 317         free_percpu(priv->stats64);
 318         netdev_upper_dev_unlink(real_dev, dev);
 319         unregister_netdevice_queue(dev, head);
 320 
 321         /* Get rid of the reference to real_dev */
 322         dev_put(real_dev);
 323 }
 324 
 325 static void qmi_wwan_netdev_setup(struct net_device *net)
 326 {
 327         struct usbnet *dev = netdev_priv(net);
 328         struct qmi_wwan_state *info = (void *)&dev->data;
 329 
 330         if (info->flags & QMI_WWAN_FLAG_RAWIP) {
 331                 net->header_ops      = NULL;  /* No header */
 332                 net->type            = ARPHRD_NONE;
 333                 net->hard_header_len = 0;
 334                 net->addr_len        = 0;
 335                 net->flags           = IFF_POINTOPOINT | IFF_NOARP | IFF_MULTICAST;
 336                 set_bit(EVENT_NO_IP_ALIGN, &dev->flags);
 337                 netdev_dbg(net, "mode: raw IP\n");
 338         } else if (!net->header_ops) { /* don't bother if already set */
 339                 ether_setup(net);
 340                 /* Restoring min/max mtu values set originally by usbnet */
 341                 net->min_mtu = 0;
 342                 net->max_mtu = ETH_MAX_MTU;
 343                 clear_bit(EVENT_NO_IP_ALIGN, &dev->flags);
 344                 netdev_dbg(net, "mode: Ethernet\n");
 345         }
 346 
 347         /* recalculate buffers after changing hard_header_len */
 348         usbnet_change_mtu(net, net->mtu);
 349 }
 350 
 351 static ssize_t raw_ip_show(struct device *d, struct device_attribute *attr, char *buf)
 352 {
 353         struct usbnet *dev = netdev_priv(to_net_dev(d));
 354         struct qmi_wwan_state *info = (void *)&dev->data;
 355 
 356         return sprintf(buf, "%c\n", info->flags & QMI_WWAN_FLAG_RAWIP ? 'Y' : 'N');
 357 }
 358 
 359 static ssize_t raw_ip_store(struct device *d,  struct device_attribute *attr, const char *buf, size_t len)
 360 {
 361         struct usbnet *dev = netdev_priv(to_net_dev(d));
 362         struct qmi_wwan_state *info = (void *)&dev->data;
 363         bool enable;
 364         int ret;
 365 
 366         if (strtobool(buf, &enable))
 367                 return -EINVAL;
 368 
 369         /* no change? */
 370         if (enable == (info->flags & QMI_WWAN_FLAG_RAWIP))
 371                 return len;
 372 
 373         if (!rtnl_trylock())
 374                 return restart_syscall();
 375 
 376         /* we don't want to modify a running netdev */
 377         if (netif_running(dev->net)) {
 378                 netdev_err(dev->net, "Cannot change a running device\n");
 379                 ret = -EBUSY;
 380                 goto err;
 381         }
 382 
 383         /* let other drivers deny the change */
 384         ret = call_netdevice_notifiers(NETDEV_PRE_TYPE_CHANGE, dev->net);
 385         ret = notifier_to_errno(ret);
 386         if (ret) {
 387                 netdev_err(dev->net, "Type change was refused\n");
 388                 goto err;
 389         }
 390 
 391         if (enable)
 392                 info->flags |= QMI_WWAN_FLAG_RAWIP;
 393         else
 394                 info->flags &= ~QMI_WWAN_FLAG_RAWIP;
 395         qmi_wwan_netdev_setup(dev->net);
 396         call_netdevice_notifiers(NETDEV_POST_TYPE_CHANGE, dev->net);
 397         ret = len;
 398 err:
 399         rtnl_unlock();
 400         return ret;
 401 }
 402 
 403 static ssize_t add_mux_show(struct device *d, struct device_attribute *attr, char *buf)
 404 {
 405         struct net_device *dev = to_net_dev(d);
 406         struct qmimux_priv *priv;
 407         struct list_head *iter;
 408         struct net_device *ldev;
 409         ssize_t count = 0;
 410 
 411         rcu_read_lock();
 412         netdev_for_each_upper_dev_rcu(dev, ldev, iter) {
 413                 priv = netdev_priv(ldev);
 414                 count += scnprintf(&buf[count], PAGE_SIZE - count,
 415                                    "0x%02x\n", priv->mux_id);
 416         }
 417         rcu_read_unlock();
 418         return count;
 419 }
 420 
 421 static ssize_t add_mux_store(struct device *d,  struct device_attribute *attr, const char *buf, size_t len)
 422 {
 423         struct usbnet *dev = netdev_priv(to_net_dev(d));
 424         struct qmi_wwan_state *info = (void *)&dev->data;
 425         u8 mux_id;
 426         int ret;
 427 
 428         if (kstrtou8(buf, 0, &mux_id))
 429                 return -EINVAL;
 430 
 431         /* mux_id [1 - 254] for compatibility with ip(8) and the rmnet driver */
 432         if (mux_id < 1 || mux_id > 254)
 433                 return -EINVAL;
 434 
 435         if (!rtnl_trylock())
 436                 return restart_syscall();
 437 
 438         if (qmimux_find_dev(dev, mux_id)) {
 439                 netdev_err(dev->net, "mux_id already present\n");
 440                 ret = -EINVAL;
 441                 goto err;
 442         }
 443 
 444         /* we don't want to modify a running netdev */
 445         if (netif_running(dev->net)) {
 446                 netdev_err(dev->net, "Cannot change a running device\n");
 447                 ret = -EBUSY;
 448                 goto err;
 449         }
 450 
 451         ret = qmimux_register_device(dev->net, mux_id);
 452         if (!ret) {
 453                 info->flags |= QMI_WWAN_FLAG_MUX;
 454                 ret = len;
 455         }
 456 err:
 457         rtnl_unlock();
 458         return ret;
 459 }
 460 
 461 static ssize_t del_mux_show(struct device *d, struct device_attribute *attr, char *buf)
 462 {
 463         return add_mux_show(d, attr, buf);
 464 }
 465 
 466 static ssize_t del_mux_store(struct device *d,  struct device_attribute *attr, const char *buf, size_t len)
 467 {
 468         struct usbnet *dev = netdev_priv(to_net_dev(d));
 469         struct qmi_wwan_state *info = (void *)&dev->data;
 470         struct net_device *del_dev;
 471         u8 mux_id;
 472         int ret = 0;
 473 
 474         if (kstrtou8(buf, 0, &mux_id))
 475                 return -EINVAL;
 476 
 477         if (!rtnl_trylock())
 478                 return restart_syscall();
 479 
 480         /* we don't want to modify a running netdev */
 481         if (netif_running(dev->net)) {
 482                 netdev_err(dev->net, "Cannot change a running device\n");
 483                 ret = -EBUSY;
 484                 goto err;
 485         }
 486 
 487         del_dev = qmimux_find_dev(dev, mux_id);
 488         if (!del_dev) {
 489                 netdev_err(dev->net, "mux_id not present\n");
 490                 ret = -EINVAL;
 491                 goto err;
 492         }
 493         qmimux_unregister_device(del_dev, NULL);
 494 
 495         if (!qmimux_has_slaves(dev))
 496                 info->flags &= ~QMI_WWAN_FLAG_MUX;
 497         ret = len;
 498 err:
 499         rtnl_unlock();
 500         return ret;
 501 }
 502 
 503 static DEVICE_ATTR_RW(raw_ip);
 504 static DEVICE_ATTR_RW(add_mux);
 505 static DEVICE_ATTR_RW(del_mux);
 506 
 507 static struct attribute *qmi_wwan_sysfs_attrs[] = {
 508         &dev_attr_raw_ip.attr,
 509         &dev_attr_add_mux.attr,
 510         &dev_attr_del_mux.attr,
 511         NULL,
 512 };
 513 
 514 static struct attribute_group qmi_wwan_sysfs_attr_group = {
 515         .name = "qmi",
 516         .attrs = qmi_wwan_sysfs_attrs,
 517 };
 518 
 519 /* default ethernet address used by the modem */
 520 static const u8 default_modem_addr[ETH_ALEN] = {0x02, 0x50, 0xf3};
 521 
 522 static const u8 buggy_fw_addr[ETH_ALEN] = {0x00, 0xa0, 0xc6, 0x00, 0x00, 0x00};
 523 
 524 /* Make up an ethernet header if the packet doesn't have one.
 525  *
 526  * A firmware bug common among several devices cause them to send raw
 527  * IP packets under some circumstances.  There is no way for the
 528  * driver/host to know when this will happen.  And even when the bug
 529  * hits, some packets will still arrive with an intact header.
 530  *
 531  * The supported devices are only capably of sending IPv4, IPv6 and
 532  * ARP packets on a point-to-point link. Any packet with an ethernet
 533  * header will have either our address or a broadcast/multicast
 534  * address as destination.  ARP packets will always have a header.
 535  *
 536  * This means that this function will reliably add the appropriate
 537  * header iff necessary, provided our hardware address does not start
 538  * with 4 or 6.
 539  *
 540  * Another common firmware bug results in all packets being addressed
 541  * to 00:a0:c6:00:00:00 despite the host address being different.
 542  * This function will also fixup such packets.
 543  */
 544 static int qmi_wwan_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
 545 {
 546         struct qmi_wwan_state *info = (void *)&dev->data;
 547         bool rawip = info->flags & QMI_WWAN_FLAG_RAWIP;
 548         __be16 proto;
 549 
 550         /* This check is no longer done by usbnet */
 551         if (skb->len < dev->net->hard_header_len)
 552                 return 0;
 553 
 554         if (info->flags & QMI_WWAN_FLAG_MUX)
 555                 return qmimux_rx_fixup(dev, skb);
 556 
 557         switch (skb->data[0] & 0xf0) {
 558         case 0x40:
 559                 proto = htons(ETH_P_IP);
 560                 break;
 561         case 0x60:
 562                 proto = htons(ETH_P_IPV6);
 563                 break;
 564         case 0x00:
 565                 if (rawip)
 566                         return 0;
 567                 if (is_multicast_ether_addr(skb->data))
 568                         return 1;
 569                 /* possibly bogus destination - rewrite just in case */
 570                 skb_reset_mac_header(skb);
 571                 goto fix_dest;
 572         default:
 573                 if (rawip)
 574                         return 0;
 575                 /* pass along other packets without modifications */
 576                 return 1;
 577         }
 578         if (rawip) {
 579                 skb_reset_mac_header(skb);
 580                 skb->dev = dev->net; /* normally set by eth_type_trans */
 581                 skb->protocol = proto;
 582                 return 1;
 583         }
 584 
 585         if (skb_headroom(skb) < ETH_HLEN)
 586                 return 0;
 587         skb_push(skb, ETH_HLEN);
 588         skb_reset_mac_header(skb);
 589         eth_hdr(skb)->h_proto = proto;
 590         eth_zero_addr(eth_hdr(skb)->h_source);
 591 fix_dest:
 592         memcpy(eth_hdr(skb)->h_dest, dev->net->dev_addr, ETH_ALEN);
 593         return 1;
 594 }
 595 
 596 /* very simplistic detection of IPv4 or IPv6 headers */
 597 static bool possibly_iphdr(const char *data)
 598 {
 599         return (data[0] & 0xd0) == 0x40;
 600 }
 601 
 602 /* disallow addresses which may be confused with IP headers */
 603 static int qmi_wwan_mac_addr(struct net_device *dev, void *p)
 604 {
 605         int ret;
 606         struct sockaddr *addr = p;
 607 
 608         ret = eth_prepare_mac_addr_change(dev, p);
 609         if (ret < 0)
 610                 return ret;
 611         if (possibly_iphdr(addr->sa_data))
 612                 return -EADDRNOTAVAIL;
 613         eth_commit_mac_addr_change(dev, p);
 614         return 0;
 615 }
 616 
 617 static const struct net_device_ops qmi_wwan_netdev_ops = {
 618         .ndo_open               = usbnet_open,
 619         .ndo_stop               = usbnet_stop,
 620         .ndo_start_xmit         = usbnet_start_xmit,
 621         .ndo_tx_timeout         = usbnet_tx_timeout,
 622         .ndo_change_mtu         = usbnet_change_mtu,
 623         .ndo_get_stats64        = usbnet_get_stats64,
 624         .ndo_set_mac_address    = qmi_wwan_mac_addr,
 625         .ndo_validate_addr      = eth_validate_addr,
 626 };
 627 
 628 /* using a counter to merge subdriver requests with our own into a
 629  * combined state
 630  */
 631 static int qmi_wwan_manage_power(struct usbnet *dev, int on)
 632 {
 633         struct qmi_wwan_state *info = (void *)&dev->data;
 634         int rv;
 635 
 636         dev_dbg(&dev->intf->dev, "%s() pmcount=%d, on=%d\n", __func__,
 637                 atomic_read(&info->pmcount), on);
 638 
 639         if ((on && atomic_add_return(1, &info->pmcount) == 1) ||
 640             (!on && atomic_dec_and_test(&info->pmcount))) {
 641                 /* need autopm_get/put here to ensure the usbcore sees
 642                  * the new value
 643                  */
 644                 rv = usb_autopm_get_interface(dev->intf);
 645                 dev->intf->needs_remote_wakeup = on;
 646                 if (!rv)
 647                         usb_autopm_put_interface(dev->intf);
 648         }
 649         return 0;
 650 }
 651 
 652 static int qmi_wwan_cdc_wdm_manage_power(struct usb_interface *intf, int on)
 653 {
 654         struct usbnet *dev = usb_get_intfdata(intf);
 655 
 656         /* can be called while disconnecting */
 657         if (!dev)
 658                 return 0;
 659         return qmi_wwan_manage_power(dev, on);
 660 }
 661 
 662 /* collect all three endpoints and register subdriver */
 663 static int qmi_wwan_register_subdriver(struct usbnet *dev)
 664 {
 665         int rv;
 666         struct usb_driver *subdriver = NULL;
 667         struct qmi_wwan_state *info = (void *)&dev->data;
 668 
 669         /* collect bulk endpoints */
 670         rv = usbnet_get_endpoints(dev, info->data);
 671         if (rv < 0)
 672                 goto err;
 673 
 674         /* update status endpoint if separate control interface */
 675         if (info->control != info->data)
 676                 dev->status = &info->control->cur_altsetting->endpoint[0];
 677 
 678         /* require interrupt endpoint for subdriver */
 679         if (!dev->status) {
 680                 rv = -EINVAL;
 681                 goto err;
 682         }
 683 
 684         /* for subdriver power management */
 685         atomic_set(&info->pmcount, 0);
 686 
 687         /* register subdriver */
 688         subdriver = usb_cdc_wdm_register(info->control, &dev->status->desc,
 689                                          4096, &qmi_wwan_cdc_wdm_manage_power);
 690         if (IS_ERR(subdriver)) {
 691                 dev_err(&info->control->dev, "subdriver registration failed\n");
 692                 rv = PTR_ERR(subdriver);
 693                 goto err;
 694         }
 695 
 696         /* prevent usbnet from using status endpoint */
 697         dev->status = NULL;
 698 
 699         /* save subdriver struct for suspend/resume wrappers */
 700         info->subdriver = subdriver;
 701 
 702 err:
 703         return rv;
 704 }
 705 
 706 /* Send CDC SetControlLineState request, setting or clearing the DTR.
 707  * "Required for Autoconnect and 9x30 to wake up" according to the
 708  * GobiNet driver. The requirement has been verified on an MDM9230
 709  * based Sierra Wireless MC7455
 710  */
 711 static int qmi_wwan_change_dtr(struct usbnet *dev, bool on)
 712 {
 713         u8 intf = dev->intf->cur_altsetting->desc.bInterfaceNumber;
 714 
 715         return usbnet_write_cmd(dev, USB_CDC_REQ_SET_CONTROL_LINE_STATE,
 716                                 USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
 717                                 on ? 0x01 : 0x00, intf, NULL, 0);
 718 }
 719 
 720 static int qmi_wwan_bind(struct usbnet *dev, struct usb_interface *intf)
 721 {
 722         int status = -1;
 723         u8 *buf = intf->cur_altsetting->extra;
 724         int len = intf->cur_altsetting->extralen;
 725         struct usb_interface_descriptor *desc = &intf->cur_altsetting->desc;
 726         struct usb_cdc_union_desc *cdc_union;
 727         struct usb_cdc_ether_desc *cdc_ether;
 728         struct usb_driver *driver = driver_of(intf);
 729         struct qmi_wwan_state *info = (void *)&dev->data;
 730         struct usb_cdc_parsed_header hdr;
 731 
 732         BUILD_BUG_ON((sizeof(((struct usbnet *)0)->data) <
 733                       sizeof(struct qmi_wwan_state)));
 734 
 735         /* set up initial state */
 736         info->control = intf;
 737         info->data = intf;
 738 
 739         /* and a number of CDC descriptors */
 740         cdc_parse_cdc_header(&hdr, intf, buf, len);
 741         cdc_union = hdr.usb_cdc_union_desc;
 742         cdc_ether = hdr.usb_cdc_ether_desc;
 743 
 744         /* Use separate control and data interfaces if we found a CDC Union */
 745         if (cdc_union) {
 746                 info->data = usb_ifnum_to_if(dev->udev,
 747                                              cdc_union->bSlaveInterface0);
 748                 if (desc->bInterfaceNumber != cdc_union->bMasterInterface0 ||
 749                     !info->data) {
 750                         dev_err(&intf->dev,
 751                                 "bogus CDC Union: master=%u, slave=%u\n",
 752                                 cdc_union->bMasterInterface0,
 753                                 cdc_union->bSlaveInterface0);
 754 
 755                         /* ignore and continue... */
 756                         cdc_union = NULL;
 757                         info->data = intf;
 758                 }
 759         }
 760 
 761         /* errors aren't fatal - we can live with the dynamic address */
 762         if (cdc_ether && cdc_ether->wMaxSegmentSize) {
 763                 dev->hard_mtu = le16_to_cpu(cdc_ether->wMaxSegmentSize);
 764                 usbnet_get_ethernet_addr(dev, cdc_ether->iMACAddress);
 765         }
 766 
 767         /* claim data interface and set it up */
 768         if (info->control != info->data) {
 769                 status = usb_driver_claim_interface(driver, info->data, dev);
 770                 if (status < 0)
 771                         goto err;
 772         }
 773 
 774         status = qmi_wwan_register_subdriver(dev);
 775         if (status < 0 && info->control != info->data) {
 776                 usb_set_intfdata(info->data, NULL);
 777                 usb_driver_release_interface(driver, info->data);
 778         }
 779 
 780         /* disabling remote wakeup on MDM9x30 devices has the same
 781          * effect as clearing DTR. The device will not respond to QMI
 782          * requests until we set DTR again.  This is similar to a
 783          * QMI_CTL SYNC request, clearing a lot of firmware state
 784          * including the client ID allocations.
 785          *
 786          * Our usage model allows a session to span multiple
 787          * open/close events, so we must prevent the firmware from
 788          * clearing out state the clients might need.
 789          *
 790          * MDM9x30 is the first QMI chipset with USB3 support. Abuse
 791          * this fact to enable the quirk for all USB3 devices.
 792          *
 793          * There are also chipsets with the same "set DTR" requirement
 794          * but without USB3 support.  Devices based on these chips
 795          * need a quirk flag in the device ID table.
 796          */
 797         if (dev->driver_info->data & QMI_WWAN_QUIRK_DTR ||
 798             le16_to_cpu(dev->udev->descriptor.bcdUSB) >= 0x0201) {
 799                 qmi_wwan_manage_power(dev, 1);
 800                 qmi_wwan_change_dtr(dev, true);
 801         }
 802 
 803         /* Never use the same address on both ends of the link, even if the
 804          * buggy firmware told us to. Or, if device is assigned the well-known
 805          * buggy firmware MAC address, replace it with a random address,
 806          */
 807         if (ether_addr_equal(dev->net->dev_addr, default_modem_addr) ||
 808             ether_addr_equal(dev->net->dev_addr, buggy_fw_addr))
 809                 eth_hw_addr_random(dev->net);
 810 
 811         /* make MAC addr easily distinguishable from an IP header */
 812         if (possibly_iphdr(dev->net->dev_addr)) {
 813                 dev->net->dev_addr[0] |= 0x02;  /* set local assignment bit */
 814                 dev->net->dev_addr[0] &= 0xbf;  /* clear "IP" bit */
 815         }
 816         dev->net->netdev_ops = &qmi_wwan_netdev_ops;
 817         dev->net->sysfs_groups[0] = &qmi_wwan_sysfs_attr_group;
 818 err:
 819         return status;
 820 }
 821 
 822 static void qmi_wwan_unbind(struct usbnet *dev, struct usb_interface *intf)
 823 {
 824         struct qmi_wwan_state *info = (void *)&dev->data;
 825         struct usb_driver *driver = driver_of(intf);
 826         struct usb_interface *other;
 827 
 828         if (info->subdriver && info->subdriver->disconnect)
 829                 info->subdriver->disconnect(info->control);
 830 
 831         /* disable MDM9x30 quirk */
 832         if (le16_to_cpu(dev->udev->descriptor.bcdUSB) >= 0x0201) {
 833                 qmi_wwan_change_dtr(dev, false);
 834                 qmi_wwan_manage_power(dev, 0);
 835         }
 836 
 837         /* allow user to unbind using either control or data */
 838         if (intf == info->control)
 839                 other = info->data;
 840         else
 841                 other = info->control;
 842 
 843         /* only if not shared */
 844         if (other && intf != other) {
 845                 usb_set_intfdata(other, NULL);
 846                 usb_driver_release_interface(driver, other);
 847         }
 848 
 849         info->subdriver = NULL;
 850         info->data = NULL;
 851         info->control = NULL;
 852 }
 853 
 854 /* suspend/resume wrappers calling both usbnet and the cdc-wdm
 855  * subdriver if present.
 856  *
 857  * NOTE: cdc-wdm also supports pre/post_reset, but we cannot provide
 858  * wrappers for those without adding usbnet reset support first.
 859  */
 860 static int qmi_wwan_suspend(struct usb_interface *intf, pm_message_t message)
 861 {
 862         struct usbnet *dev = usb_get_intfdata(intf);
 863         struct qmi_wwan_state *info = (void *)&dev->data;
 864         int ret;
 865 
 866         /* Both usbnet_suspend() and subdriver->suspend() MUST return 0
 867          * in system sleep context, otherwise, the resume callback has
 868          * to recover device from previous suspend failure.
 869          */
 870         ret = usbnet_suspend(intf, message);
 871         if (ret < 0)
 872                 goto err;
 873 
 874         if (intf == info->control && info->subdriver &&
 875             info->subdriver->suspend)
 876                 ret = info->subdriver->suspend(intf, message);
 877         if (ret < 0)
 878                 usbnet_resume(intf);
 879 err:
 880         return ret;
 881 }
 882 
 883 static int qmi_wwan_resume(struct usb_interface *intf)
 884 {
 885         struct usbnet *dev = usb_get_intfdata(intf);
 886         struct qmi_wwan_state *info = (void *)&dev->data;
 887         int ret = 0;
 888         bool callsub = (intf == info->control && info->subdriver &&
 889                         info->subdriver->resume);
 890 
 891         if (callsub)
 892                 ret = info->subdriver->resume(intf);
 893         if (ret < 0)
 894                 goto err;
 895         ret = usbnet_resume(intf);
 896         if (ret < 0 && callsub)
 897                 info->subdriver->suspend(intf, PMSG_SUSPEND);
 898 err:
 899         return ret;
 900 }
 901 
 902 static const struct driver_info qmi_wwan_info = {
 903         .description    = "WWAN/QMI device",
 904         .flags          = FLAG_WWAN | FLAG_SEND_ZLP,
 905         .bind           = qmi_wwan_bind,
 906         .unbind         = qmi_wwan_unbind,
 907         .manage_power   = qmi_wwan_manage_power,
 908         .rx_fixup       = qmi_wwan_rx_fixup,
 909 };
 910 
 911 static const struct driver_info qmi_wwan_info_quirk_dtr = {
 912         .description    = "WWAN/QMI device",
 913         .flags          = FLAG_WWAN | FLAG_SEND_ZLP,
 914         .bind           = qmi_wwan_bind,
 915         .unbind         = qmi_wwan_unbind,
 916         .manage_power   = qmi_wwan_manage_power,
 917         .rx_fixup       = qmi_wwan_rx_fixup,
 918         .data           = QMI_WWAN_QUIRK_DTR,
 919 };
 920 
 921 #define HUAWEI_VENDOR_ID        0x12D1
 922 
 923 /* map QMI/wwan function by a fixed interface number */
 924 #define QMI_FIXED_INTF(vend, prod, num) \
 925         USB_DEVICE_INTERFACE_NUMBER(vend, prod, num), \
 926         .driver_info = (unsigned long)&qmi_wwan_info
 927 
 928 /* devices requiring "set DTR" quirk */
 929 #define QMI_QUIRK_SET_DTR(vend, prod, num) \
 930         USB_DEVICE_INTERFACE_NUMBER(vend, prod, num), \
 931         .driver_info = (unsigned long)&qmi_wwan_info_quirk_dtr
 932 
 933 /* Gobi 1000 QMI/wwan interface number is 3 according to qcserial */
 934 #define QMI_GOBI1K_DEVICE(vend, prod) \
 935         QMI_FIXED_INTF(vend, prod, 3)
 936 
 937 /* Gobi 2000/3000 QMI/wwan interface number is 0 according to qcserial */
 938 #define QMI_GOBI_DEVICE(vend, prod) \
 939         QMI_FIXED_INTF(vend, prod, 0)
 940 
 941 /* Many devices have QMI and DIAG functions which are distinguishable
 942  * from other vendor specific functions by class, subclass and
 943  * protocol all being 0xff. The DIAG function has exactly 2 endpoints
 944  * and is silently rejected when probed.
 945  *
 946  * This makes it possible to match dynamically numbered QMI functions
 947  * as seen on e.g. many Quectel modems.
 948  */
 949 #define QMI_MATCH_FF_FF_FF(vend, prod) \
 950         USB_DEVICE_AND_INTERFACE_INFO(vend, prod, USB_CLASS_VENDOR_SPEC, \
 951                                       USB_SUBCLASS_VENDOR_SPEC, 0xff), \
 952         .driver_info = (unsigned long)&qmi_wwan_info_quirk_dtr
 953 
 954 static const struct usb_device_id products[] = {
 955         /* 1. CDC ECM like devices match on the control interface */
 956         {       /* Huawei E392, E398 and possibly others sharing both device id and more... */
 957                 USB_VENDOR_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, USB_CLASS_VENDOR_SPEC, 1, 9),
 958                 .driver_info        = (unsigned long)&qmi_wwan_info,
 959         },
 960         {       /* Vodafone/Huawei K5005 (12d1:14c8) and similar modems */
 961                 USB_VENDOR_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, USB_CLASS_VENDOR_SPEC, 1, 57),
 962                 .driver_info        = (unsigned long)&qmi_wwan_info,
 963         },
 964         {       /* HUAWEI_INTERFACE_NDIS_CONTROL_QUALCOMM */
 965                 USB_VENDOR_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, USB_CLASS_VENDOR_SPEC, 0x01, 0x69),
 966                 .driver_info        = (unsigned long)&qmi_wwan_info,
 967         },
 968         {       /* Motorola Mapphone devices with MDM6600 */
 969                 USB_VENDOR_AND_INTERFACE_INFO(0x22b8, USB_CLASS_VENDOR_SPEC, 0xfb, 0xff),
 970                 .driver_info        = (unsigned long)&qmi_wwan_info,
 971         },
 972 
 973         /* 2. Combined interface devices matching on class+protocol */
 974         {       /* Huawei E367 and possibly others in "Windows mode" */
 975                 USB_VENDOR_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, USB_CLASS_VENDOR_SPEC, 1, 7),
 976                 .driver_info        = (unsigned long)&qmi_wwan_info,
 977         },
 978         {       /* Huawei E392, E398 and possibly others in "Windows mode" */
 979                 USB_VENDOR_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, USB_CLASS_VENDOR_SPEC, 1, 17),
 980                 .driver_info        = (unsigned long)&qmi_wwan_info,
 981         },
 982         {       /* HUAWEI_NDIS_SINGLE_INTERFACE_VDF */
 983                 USB_VENDOR_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, USB_CLASS_VENDOR_SPEC, 0x01, 0x37),
 984                 .driver_info        = (unsigned long)&qmi_wwan_info,
 985         },
 986         {       /* HUAWEI_INTERFACE_NDIS_HW_QUALCOMM */
 987                 USB_VENDOR_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, USB_CLASS_VENDOR_SPEC, 0x01, 0x67),
 988                 .driver_info        = (unsigned long)&qmi_wwan_info,
 989         },
 990         {       /* Pantech UML290, P4200 and more */
 991                 USB_VENDOR_AND_INTERFACE_INFO(0x106c, USB_CLASS_VENDOR_SPEC, 0xf0, 0xff),
 992                 .driver_info        = (unsigned long)&qmi_wwan_info,
 993         },
 994         {       /* Pantech UML290 - newer firmware */
 995                 USB_VENDOR_AND_INTERFACE_INFO(0x106c, USB_CLASS_VENDOR_SPEC, 0xf1, 0xff),
 996                 .driver_info        = (unsigned long)&qmi_wwan_info,
 997         },
 998         {       /* Novatel USB551L and MC551 */
 999                 USB_DEVICE_AND_INTERFACE_INFO(0x1410, 0xb001,
1000                                               USB_CLASS_COMM,
1001                                               USB_CDC_SUBCLASS_ETHERNET,
1002                                               USB_CDC_PROTO_NONE),
1003                 .driver_info        = (unsigned long)&qmi_wwan_info,
1004         },
1005         {       /* Novatel E362 */
1006                 USB_DEVICE_AND_INTERFACE_INFO(0x1410, 0x9010,
1007                                               USB_CLASS_COMM,
1008                                               USB_CDC_SUBCLASS_ETHERNET,
1009                                               USB_CDC_PROTO_NONE),
1010                 .driver_info        = (unsigned long)&qmi_wwan_info,
1011         },
1012         {       /* Novatel Expedite E371 */
1013                 USB_DEVICE_AND_INTERFACE_INFO(0x1410, 0x9011,
1014                                               USB_CLASS_COMM,
1015                                               USB_CDC_SUBCLASS_ETHERNET,
1016                                               USB_CDC_PROTO_NONE),
1017                 .driver_info        = (unsigned long)&qmi_wwan_info,
1018         },
1019         {       /* Dell Wireless 5800 (Novatel E362) */
1020                 USB_DEVICE_AND_INTERFACE_INFO(0x413C, 0x8195,
1021                                               USB_CLASS_COMM,
1022                                               USB_CDC_SUBCLASS_ETHERNET,
1023                                               USB_CDC_PROTO_NONE),
1024                 .driver_info        = (unsigned long)&qmi_wwan_info,
1025         },
1026         {       /* Dell Wireless 5800 V2 (Novatel E362) */
1027                 USB_DEVICE_AND_INTERFACE_INFO(0x413C, 0x8196,
1028                                               USB_CLASS_COMM,
1029                                               USB_CDC_SUBCLASS_ETHERNET,
1030                                               USB_CDC_PROTO_NONE),
1031                 .driver_info        = (unsigned long)&qmi_wwan_info,
1032         },
1033         {       /* Dell Wireless 5804 (Novatel E371) */
1034                 USB_DEVICE_AND_INTERFACE_INFO(0x413C, 0x819b,
1035                                               USB_CLASS_COMM,
1036                                               USB_CDC_SUBCLASS_ETHERNET,
1037                                               USB_CDC_PROTO_NONE),
1038                 .driver_info        = (unsigned long)&qmi_wwan_info,
1039         },
1040         {       /* ADU960S */
1041                 USB_DEVICE_AND_INTERFACE_INFO(0x16d5, 0x650a,
1042                                               USB_CLASS_COMM,
1043                                               USB_CDC_SUBCLASS_ETHERNET,
1044                                               USB_CDC_PROTO_NONE),
1045                 .driver_info        = (unsigned long)&qmi_wwan_info,
1046         },
1047         {       /* HP lt2523 (Novatel E371) */
1048                 USB_DEVICE_AND_INTERFACE_INFO(0x03f0, 0x421d,
1049                                               USB_CLASS_COMM,
1050                                               USB_CDC_SUBCLASS_ETHERNET,
1051                                               USB_CDC_PROTO_NONE),
1052                 .driver_info        = (unsigned long)&qmi_wwan_info,
1053         },
1054         {       /* HP lt4112 LTE/HSPA+ Gobi 4G Module (Huawei me906e) */
1055                 USB_DEVICE_AND_INTERFACE_INFO(0x03f0, 0x581d, USB_CLASS_VENDOR_SPEC, 1, 7),
1056                 .driver_info = (unsigned long)&qmi_wwan_info,
1057         },
1058         {QMI_MATCH_FF_FF_FF(0x2c7c, 0x0125)},   /* Quectel EC25, EC20 R2.0  Mini PCIe */
1059         {QMI_MATCH_FF_FF_FF(0x2c7c, 0x0306)},   /* Quectel EP06/EG06/EM06 */
1060         {QMI_MATCH_FF_FF_FF(0x2c7c, 0x0512)},   /* Quectel EG12/EM12 */
1061         {QMI_MATCH_FF_FF_FF(0x2c7c, 0x0800)},   /* Quectel RM500Q-GL */
1062 
1063         /* 3. Combined interface devices matching on interface number */
1064         {QMI_FIXED_INTF(0x0408, 0xea42, 4)},    /* Yota / Megafon M100-1 */
1065         {QMI_FIXED_INTF(0x05c6, 0x6001, 3)},    /* 4G LTE usb-modem U901 */
1066         {QMI_FIXED_INTF(0x05c6, 0x7000, 0)},
1067         {QMI_FIXED_INTF(0x05c6, 0x7001, 1)},
1068         {QMI_FIXED_INTF(0x05c6, 0x7002, 1)},
1069         {QMI_FIXED_INTF(0x05c6, 0x7101, 1)},
1070         {QMI_FIXED_INTF(0x05c6, 0x7101, 2)},
1071         {QMI_FIXED_INTF(0x05c6, 0x7101, 3)},
1072         {QMI_FIXED_INTF(0x05c6, 0x7102, 1)},
1073         {QMI_FIXED_INTF(0x05c6, 0x7102, 2)},
1074         {QMI_FIXED_INTF(0x05c6, 0x7102, 3)},
1075         {QMI_FIXED_INTF(0x05c6, 0x8000, 7)},
1076         {QMI_FIXED_INTF(0x05c6, 0x8001, 6)},
1077         {QMI_FIXED_INTF(0x05c6, 0x9000, 4)},
1078         {QMI_FIXED_INTF(0x05c6, 0x9003, 4)},
1079         {QMI_FIXED_INTF(0x05c6, 0x9005, 2)},
1080         {QMI_FIXED_INTF(0x05c6, 0x900a, 4)},
1081         {QMI_FIXED_INTF(0x05c6, 0x900b, 2)},
1082         {QMI_FIXED_INTF(0x05c6, 0x900c, 4)},
1083         {QMI_FIXED_INTF(0x05c6, 0x900c, 5)},
1084         {QMI_FIXED_INTF(0x05c6, 0x900c, 6)},
1085         {QMI_FIXED_INTF(0x05c6, 0x900d, 5)},
1086         {QMI_FIXED_INTF(0x05c6, 0x900f, 3)},
1087         {QMI_FIXED_INTF(0x05c6, 0x900f, 4)},
1088         {QMI_FIXED_INTF(0x05c6, 0x900f, 5)},
1089         {QMI_FIXED_INTF(0x05c6, 0x9010, 4)},
1090         {QMI_FIXED_INTF(0x05c6, 0x9010, 5)},
1091         {QMI_FIXED_INTF(0x05c6, 0x9011, 3)},
1092         {QMI_FIXED_INTF(0x05c6, 0x9011, 4)},
1093         {QMI_FIXED_INTF(0x05c6, 0x9021, 1)},
1094         {QMI_FIXED_INTF(0x05c6, 0x9022, 2)},
1095         {QMI_FIXED_INTF(0x05c6, 0x9025, 4)},    /* Alcatel-sbell ASB TL131 TDD LTE  (China Mobile) */
1096         {QMI_FIXED_INTF(0x05c6, 0x9026, 3)},
1097         {QMI_FIXED_INTF(0x05c6, 0x902e, 5)},
1098         {QMI_FIXED_INTF(0x05c6, 0x9031, 5)},
1099         {QMI_FIXED_INTF(0x05c6, 0x9032, 4)},
1100         {QMI_FIXED_INTF(0x05c6, 0x9033, 3)},
1101         {QMI_FIXED_INTF(0x05c6, 0x9033, 4)},
1102         {QMI_FIXED_INTF(0x05c6, 0x9033, 5)},
1103         {QMI_FIXED_INTF(0x05c6, 0x9033, 6)},
1104         {QMI_FIXED_INTF(0x05c6, 0x9034, 3)},
1105         {QMI_FIXED_INTF(0x05c6, 0x9034, 4)},
1106         {QMI_FIXED_INTF(0x05c6, 0x9034, 5)},
1107         {QMI_FIXED_INTF(0x05c6, 0x9034, 6)},
1108         {QMI_FIXED_INTF(0x05c6, 0x9034, 7)},
1109         {QMI_FIXED_INTF(0x05c6, 0x9035, 4)},
1110         {QMI_FIXED_INTF(0x05c6, 0x9036, 3)},
1111         {QMI_FIXED_INTF(0x05c6, 0x9037, 5)},
1112         {QMI_FIXED_INTF(0x05c6, 0x9038, 4)},
1113         {QMI_FIXED_INTF(0x05c6, 0x903b, 7)},
1114         {QMI_FIXED_INTF(0x05c6, 0x903c, 6)},
1115         {QMI_FIXED_INTF(0x05c6, 0x903d, 6)},
1116         {QMI_FIXED_INTF(0x05c6, 0x903e, 5)},
1117         {QMI_FIXED_INTF(0x05c6, 0x9043, 3)},
1118         {QMI_FIXED_INTF(0x05c6, 0x9046, 3)},
1119         {QMI_FIXED_INTF(0x05c6, 0x9046, 4)},
1120         {QMI_FIXED_INTF(0x05c6, 0x9046, 5)},
1121         {QMI_FIXED_INTF(0x05c6, 0x9047, 2)},
1122         {QMI_FIXED_INTF(0x05c6, 0x9047, 3)},
1123         {QMI_FIXED_INTF(0x05c6, 0x9047, 4)},
1124         {QMI_FIXED_INTF(0x05c6, 0x9048, 4)},
1125         {QMI_FIXED_INTF(0x05c6, 0x9048, 5)},
1126         {QMI_FIXED_INTF(0x05c6, 0x9048, 6)},
1127         {QMI_FIXED_INTF(0x05c6, 0x9048, 7)},
1128         {QMI_FIXED_INTF(0x05c6, 0x9048, 8)},
1129         {QMI_FIXED_INTF(0x05c6, 0x904c, 5)},
1130         {QMI_FIXED_INTF(0x05c6, 0x904c, 6)},
1131         {QMI_FIXED_INTF(0x05c6, 0x904c, 7)},
1132         {QMI_FIXED_INTF(0x05c6, 0x904c, 8)},
1133         {QMI_FIXED_INTF(0x05c6, 0x9050, 3)},
1134         {QMI_FIXED_INTF(0x05c6, 0x9052, 4)},
1135         {QMI_FIXED_INTF(0x05c6, 0x9053, 6)},
1136         {QMI_FIXED_INTF(0x05c6, 0x9053, 7)},
1137         {QMI_FIXED_INTF(0x05c6, 0x9054, 5)},
1138         {QMI_FIXED_INTF(0x05c6, 0x9054, 6)},
1139         {QMI_FIXED_INTF(0x05c6, 0x9055, 3)},
1140         {QMI_FIXED_INTF(0x05c6, 0x9055, 4)},
1141         {QMI_FIXED_INTF(0x05c6, 0x9055, 5)},
1142         {QMI_FIXED_INTF(0x05c6, 0x9055, 6)},
1143         {QMI_FIXED_INTF(0x05c6, 0x9055, 7)},
1144         {QMI_FIXED_INTF(0x05c6, 0x9056, 3)},
1145         {QMI_FIXED_INTF(0x05c6, 0x9062, 2)},
1146         {QMI_FIXED_INTF(0x05c6, 0x9062, 3)},
1147         {QMI_FIXED_INTF(0x05c6, 0x9062, 4)},
1148         {QMI_FIXED_INTF(0x05c6, 0x9062, 5)},
1149         {QMI_FIXED_INTF(0x05c6, 0x9062, 6)},
1150         {QMI_FIXED_INTF(0x05c6, 0x9062, 7)},
1151         {QMI_FIXED_INTF(0x05c6, 0x9062, 8)},
1152         {QMI_FIXED_INTF(0x05c6, 0x9062, 9)},
1153         {QMI_FIXED_INTF(0x05c6, 0x9064, 3)},
1154         {QMI_FIXED_INTF(0x05c6, 0x9065, 6)},
1155         {QMI_FIXED_INTF(0x05c6, 0x9065, 7)},
1156         {QMI_FIXED_INTF(0x05c6, 0x9066, 5)},
1157         {QMI_FIXED_INTF(0x05c6, 0x9066, 6)},
1158         {QMI_FIXED_INTF(0x05c6, 0x9067, 1)},
1159         {QMI_FIXED_INTF(0x05c6, 0x9068, 2)},
1160         {QMI_FIXED_INTF(0x05c6, 0x9068, 3)},
1161         {QMI_FIXED_INTF(0x05c6, 0x9068, 4)},
1162         {QMI_FIXED_INTF(0x05c6, 0x9068, 5)},
1163         {QMI_FIXED_INTF(0x05c6, 0x9068, 6)},
1164         {QMI_FIXED_INTF(0x05c6, 0x9068, 7)},
1165         {QMI_FIXED_INTF(0x05c6, 0x9069, 5)},
1166         {QMI_FIXED_INTF(0x05c6, 0x9069, 6)},
1167         {QMI_FIXED_INTF(0x05c6, 0x9069, 7)},
1168         {QMI_FIXED_INTF(0x05c6, 0x9069, 8)},
1169         {QMI_FIXED_INTF(0x05c6, 0x9070, 4)},
1170         {QMI_FIXED_INTF(0x05c6, 0x9070, 5)},
1171         {QMI_FIXED_INTF(0x05c6, 0x9075, 5)},
1172         {QMI_FIXED_INTF(0x05c6, 0x9076, 4)},
1173         {QMI_FIXED_INTF(0x05c6, 0x9076, 5)},
1174         {QMI_FIXED_INTF(0x05c6, 0x9076, 6)},
1175         {QMI_FIXED_INTF(0x05c6, 0x9076, 7)},
1176         {QMI_FIXED_INTF(0x05c6, 0x9076, 8)},
1177         {QMI_FIXED_INTF(0x05c6, 0x9077, 3)},
1178         {QMI_FIXED_INTF(0x05c6, 0x9077, 4)},
1179         {QMI_FIXED_INTF(0x05c6, 0x9077, 5)},
1180         {QMI_FIXED_INTF(0x05c6, 0x9077, 6)},
1181         {QMI_FIXED_INTF(0x05c6, 0x9078, 3)},
1182         {QMI_FIXED_INTF(0x05c6, 0x9079, 4)},
1183         {QMI_FIXED_INTF(0x05c6, 0x9079, 5)},
1184         {QMI_FIXED_INTF(0x05c6, 0x9079, 6)},
1185         {QMI_FIXED_INTF(0x05c6, 0x9079, 7)},
1186         {QMI_FIXED_INTF(0x05c6, 0x9079, 8)},
1187         {QMI_FIXED_INTF(0x05c6, 0x9080, 5)},
1188         {QMI_FIXED_INTF(0x05c6, 0x9080, 6)},
1189         {QMI_FIXED_INTF(0x05c6, 0x9080, 7)},
1190         {QMI_FIXED_INTF(0x05c6, 0x9080, 8)},
1191         {QMI_FIXED_INTF(0x05c6, 0x9083, 3)},
1192         {QMI_FIXED_INTF(0x05c6, 0x9084, 4)},
1193         {QMI_FIXED_INTF(0x05c6, 0x90b2, 3)},    /* ublox R410M */
1194         {QMI_FIXED_INTF(0x05c6, 0x920d, 0)},
1195         {QMI_FIXED_INTF(0x05c6, 0x920d, 5)},
1196         {QMI_QUIRK_SET_DTR(0x05c6, 0x9625, 4)}, /* YUGA CLM920-NC5 */
1197         {QMI_FIXED_INTF(0x0846, 0x68a2, 8)},
1198         {QMI_FIXED_INTF(0x0846, 0x68d3, 8)},    /* Netgear Aircard 779S */
1199         {QMI_FIXED_INTF(0x12d1, 0x140c, 1)},    /* Huawei E173 */
1200         {QMI_FIXED_INTF(0x12d1, 0x14ac, 1)},    /* Huawei E1820 */
1201         {QMI_FIXED_INTF(0x1435, 0x0918, 3)},    /* Wistron NeWeb D16Q1 */
1202         {QMI_FIXED_INTF(0x1435, 0x0918, 4)},    /* Wistron NeWeb D16Q1 */
1203         {QMI_FIXED_INTF(0x1435, 0x0918, 5)},    /* Wistron NeWeb D16Q1 */
1204         {QMI_FIXED_INTF(0x1435, 0x3185, 4)},    /* Wistron NeWeb M18Q5 */
1205         {QMI_FIXED_INTF(0x1435, 0xd111, 4)},    /* M9615A DM11-1 D51QC */
1206         {QMI_FIXED_INTF(0x1435, 0xd181, 3)},    /* Wistron NeWeb D18Q1 */
1207         {QMI_FIXED_INTF(0x1435, 0xd181, 4)},    /* Wistron NeWeb D18Q1 */
1208         {QMI_FIXED_INTF(0x1435, 0xd181, 5)},    /* Wistron NeWeb D18Q1 */
1209         {QMI_FIXED_INTF(0x1435, 0xd182, 4)},    /* Wistron NeWeb D18 */
1210         {QMI_FIXED_INTF(0x1435, 0xd182, 5)},    /* Wistron NeWeb D18 */
1211         {QMI_FIXED_INTF(0x1435, 0xd191, 4)},    /* Wistron NeWeb D19Q1 */
1212         {QMI_QUIRK_SET_DTR(0x1508, 0x1001, 4)}, /* Fibocom NL668 series */
1213         {QMI_FIXED_INTF(0x1690, 0x7588, 4)},    /* ASKEY WWHC050 */
1214         {QMI_FIXED_INTF(0x16d8, 0x6003, 0)},    /* CMOTech 6003 */
1215         {QMI_FIXED_INTF(0x16d8, 0x6007, 0)},    /* CMOTech CHE-628S */
1216         {QMI_FIXED_INTF(0x16d8, 0x6008, 0)},    /* CMOTech CMU-301 */
1217         {QMI_FIXED_INTF(0x16d8, 0x6280, 0)},    /* CMOTech CHU-628 */
1218         {QMI_FIXED_INTF(0x16d8, 0x7001, 0)},    /* CMOTech CHU-720S */
1219         {QMI_FIXED_INTF(0x16d8, 0x7002, 0)},    /* CMOTech 7002 */
1220         {QMI_FIXED_INTF(0x16d8, 0x7003, 4)},    /* CMOTech CHU-629K */
1221         {QMI_FIXED_INTF(0x16d8, 0x7004, 3)},    /* CMOTech 7004 */
1222         {QMI_FIXED_INTF(0x16d8, 0x7006, 5)},    /* CMOTech CGU-629 */
1223         {QMI_FIXED_INTF(0x16d8, 0x700a, 4)},    /* CMOTech CHU-629S */
1224         {QMI_FIXED_INTF(0x16d8, 0x7211, 0)},    /* CMOTech CHU-720I */
1225         {QMI_FIXED_INTF(0x16d8, 0x7212, 0)},    /* CMOTech 7212 */
1226         {QMI_FIXED_INTF(0x16d8, 0x7213, 0)},    /* CMOTech 7213 */
1227         {QMI_FIXED_INTF(0x16d8, 0x7251, 1)},    /* CMOTech 7251 */
1228         {QMI_FIXED_INTF(0x16d8, 0x7252, 1)},    /* CMOTech 7252 */
1229         {QMI_FIXED_INTF(0x16d8, 0x7253, 1)},    /* CMOTech 7253 */
1230         {QMI_FIXED_INTF(0x19d2, 0x0002, 1)},
1231         {QMI_FIXED_INTF(0x19d2, 0x0012, 1)},
1232         {QMI_FIXED_INTF(0x19d2, 0x0017, 3)},
1233         {QMI_FIXED_INTF(0x19d2, 0x0019, 3)},    /* ONDA MT689DC */
1234         {QMI_FIXED_INTF(0x19d2, 0x0021, 4)},
1235         {QMI_FIXED_INTF(0x19d2, 0x0025, 1)},
1236         {QMI_FIXED_INTF(0x19d2, 0x0031, 4)},
1237         {QMI_FIXED_INTF(0x19d2, 0x0042, 4)},
1238         {QMI_FIXED_INTF(0x19d2, 0x0049, 5)},
1239         {QMI_FIXED_INTF(0x19d2, 0x0052, 4)},
1240         {QMI_FIXED_INTF(0x19d2, 0x0055, 1)},    /* ZTE (Vodafone) K3520-Z */
1241         {QMI_FIXED_INTF(0x19d2, 0x0058, 4)},
1242         {QMI_FIXED_INTF(0x19d2, 0x0063, 4)},    /* ZTE (Vodafone) K3565-Z */
1243         {QMI_FIXED_INTF(0x19d2, 0x0104, 4)},    /* ZTE (Vodafone) K4505-Z */
1244         {QMI_FIXED_INTF(0x19d2, 0x0113, 5)},
1245         {QMI_FIXED_INTF(0x19d2, 0x0118, 5)},
1246         {QMI_FIXED_INTF(0x19d2, 0x0121, 5)},
1247         {QMI_FIXED_INTF(0x19d2, 0x0123, 4)},
1248         {QMI_FIXED_INTF(0x19d2, 0x0124, 5)},
1249         {QMI_FIXED_INTF(0x19d2, 0x0125, 6)},
1250         {QMI_FIXED_INTF(0x19d2, 0x0126, 5)},
1251         {QMI_FIXED_INTF(0x19d2, 0x0130, 1)},
1252         {QMI_FIXED_INTF(0x19d2, 0x0133, 3)},
1253         {QMI_FIXED_INTF(0x19d2, 0x0141, 5)},
1254         {QMI_FIXED_INTF(0x19d2, 0x0157, 5)},    /* ZTE MF683 */
1255         {QMI_FIXED_INTF(0x19d2, 0x0158, 3)},
1256         {QMI_FIXED_INTF(0x19d2, 0x0167, 4)},    /* ZTE MF820D */
1257         {QMI_FIXED_INTF(0x19d2, 0x0168, 4)},
1258         {QMI_FIXED_INTF(0x19d2, 0x0176, 3)},
1259         {QMI_FIXED_INTF(0x19d2, 0x0178, 3)},
1260         {QMI_FIXED_INTF(0x19d2, 0x0191, 4)},    /* ZTE EuFi890 */
1261         {QMI_FIXED_INTF(0x19d2, 0x0199, 1)},    /* ZTE MF820S */
1262         {QMI_FIXED_INTF(0x19d2, 0x0200, 1)},
1263         {QMI_FIXED_INTF(0x19d2, 0x0257, 3)},    /* ZTE MF821 */
1264         {QMI_FIXED_INTF(0x19d2, 0x0265, 4)},    /* ONDA MT8205 4G LTE */
1265         {QMI_FIXED_INTF(0x19d2, 0x0284, 4)},    /* ZTE MF880 */
1266         {QMI_FIXED_INTF(0x19d2, 0x0326, 4)},    /* ZTE MF821D */
1267         {QMI_FIXED_INTF(0x19d2, 0x0396, 3)},    /* ZTE ZM8620 */
1268         {QMI_FIXED_INTF(0x19d2, 0x0412, 4)},    /* Telewell TW-LTE 4G */
1269         {QMI_FIXED_INTF(0x19d2, 0x1008, 4)},    /* ZTE (Vodafone) K3570-Z */
1270         {QMI_FIXED_INTF(0x19d2, 0x1010, 4)},    /* ZTE (Vodafone) K3571-Z */
1271         {QMI_FIXED_INTF(0x19d2, 0x1012, 4)},
1272         {QMI_FIXED_INTF(0x19d2, 0x1018, 3)},    /* ZTE (Vodafone) K5006-Z */
1273         {QMI_FIXED_INTF(0x19d2, 0x1021, 2)},
1274         {QMI_FIXED_INTF(0x19d2, 0x1245, 4)},
1275         {QMI_FIXED_INTF(0x19d2, 0x1247, 4)},
1276         {QMI_FIXED_INTF(0x19d2, 0x1252, 4)},
1277         {QMI_FIXED_INTF(0x19d2, 0x1254, 4)},
1278         {QMI_FIXED_INTF(0x19d2, 0x1255, 3)},
1279         {QMI_FIXED_INTF(0x19d2, 0x1255, 4)},
1280         {QMI_FIXED_INTF(0x19d2, 0x1256, 4)},
1281         {QMI_FIXED_INTF(0x19d2, 0x1270, 5)},    /* ZTE MF667 */
1282         {QMI_FIXED_INTF(0x19d2, 0x1401, 2)},
1283         {QMI_FIXED_INTF(0x19d2, 0x1402, 2)},    /* ZTE MF60 */
1284         {QMI_FIXED_INTF(0x19d2, 0x1424, 2)},
1285         {QMI_FIXED_INTF(0x19d2, 0x1425, 2)},
1286         {QMI_FIXED_INTF(0x19d2, 0x1426, 2)},    /* ZTE MF91 */
1287         {QMI_FIXED_INTF(0x19d2, 0x1428, 2)},    /* Telewell TW-LTE 4G v2 */
1288         {QMI_FIXED_INTF(0x19d2, 0x1432, 3)},    /* ZTE ME3620 */
1289         {QMI_FIXED_INTF(0x19d2, 0x2002, 4)},    /* ZTE (Vodafone) K3765-Z */
1290         {QMI_FIXED_INTF(0x2001, 0x7e16, 3)},    /* D-Link DWM-221 */
1291         {QMI_FIXED_INTF(0x2001, 0x7e19, 4)},    /* D-Link DWM-221 B1 */
1292         {QMI_FIXED_INTF(0x2001, 0x7e35, 4)},    /* D-Link DWM-222 */
1293         {QMI_FIXED_INTF(0x2001, 0x7e3d, 4)},    /* D-Link DWM-222 A2 */
1294         {QMI_FIXED_INTF(0x2020, 0x2031, 4)},    /* Olicard 600 */
1295         {QMI_FIXED_INTF(0x2020, 0x2033, 4)},    /* BroadMobi BM806U */
1296         {QMI_FIXED_INTF(0x2020, 0x2060, 4)},    /* BroadMobi BM818 */
1297         {QMI_FIXED_INTF(0x0f3d, 0x68a2, 8)},    /* Sierra Wireless MC7700 */
1298         {QMI_FIXED_INTF(0x114f, 0x68a2, 8)},    /* Sierra Wireless MC7750 */
1299         {QMI_FIXED_INTF(0x1199, 0x68a2, 8)},    /* Sierra Wireless MC7710 in QMI mode */
1300         {QMI_FIXED_INTF(0x1199, 0x68a2, 19)},   /* Sierra Wireless MC7710 in QMI mode */
1301         {QMI_QUIRK_SET_DTR(0x1199, 0x68c0, 8)}, /* Sierra Wireless MC7304/MC7354, WP76xx */
1302         {QMI_QUIRK_SET_DTR(0x1199, 0x68c0, 10)},/* Sierra Wireless MC7304/MC7354 */
1303         {QMI_FIXED_INTF(0x1199, 0x901c, 8)},    /* Sierra Wireless EM7700 */
1304         {QMI_FIXED_INTF(0x1199, 0x901f, 8)},    /* Sierra Wireless EM7355 */
1305         {QMI_FIXED_INTF(0x1199, 0x9041, 8)},    /* Sierra Wireless MC7305/MC7355 */
1306         {QMI_FIXED_INTF(0x1199, 0x9041, 10)},   /* Sierra Wireless MC7305/MC7355 */
1307         {QMI_FIXED_INTF(0x1199, 0x9051, 8)},    /* Netgear AirCard 340U */
1308         {QMI_FIXED_INTF(0x1199, 0x9053, 8)},    /* Sierra Wireless Modem */
1309         {QMI_FIXED_INTF(0x1199, 0x9054, 8)},    /* Sierra Wireless Modem */
1310         {QMI_FIXED_INTF(0x1199, 0x9055, 8)},    /* Netgear AirCard 341U */
1311         {QMI_FIXED_INTF(0x1199, 0x9056, 8)},    /* Sierra Wireless Modem */
1312         {QMI_FIXED_INTF(0x1199, 0x9057, 8)},
1313         {QMI_FIXED_INTF(0x1199, 0x9061, 8)},    /* Sierra Wireless Modem */
1314         {QMI_FIXED_INTF(0x1199, 0x9063, 8)},    /* Sierra Wireless EM7305 */
1315         {QMI_FIXED_INTF(0x1199, 0x9063, 10)},   /* Sierra Wireless EM7305 */
1316         {QMI_QUIRK_SET_DTR(0x1199, 0x9071, 8)}, /* Sierra Wireless MC74xx */
1317         {QMI_QUIRK_SET_DTR(0x1199, 0x9071, 10)},/* Sierra Wireless MC74xx */
1318         {QMI_QUIRK_SET_DTR(0x1199, 0x9079, 8)}, /* Sierra Wireless EM74xx */
1319         {QMI_QUIRK_SET_DTR(0x1199, 0x9079, 10)},/* Sierra Wireless EM74xx */
1320         {QMI_QUIRK_SET_DTR(0x1199, 0x907b, 8)}, /* Sierra Wireless EM74xx */
1321         {QMI_QUIRK_SET_DTR(0x1199, 0x907b, 10)},/* Sierra Wireless EM74xx */
1322         {QMI_QUIRK_SET_DTR(0x1199, 0x9091, 8)}, /* Sierra Wireless EM7565 */
1323         {QMI_FIXED_INTF(0x1bbb, 0x011e, 4)},    /* Telekom Speedstick LTE II (Alcatel One Touch L100V LTE) */
1324         {QMI_FIXED_INTF(0x1bbb, 0x0203, 2)},    /* Alcatel L800MA */
1325         {QMI_FIXED_INTF(0x2357, 0x0201, 4)},    /* TP-LINK HSUPA Modem MA180 */
1326         {QMI_FIXED_INTF(0x2357, 0x9000, 4)},    /* TP-LINK MA260 */
1327         {QMI_QUIRK_SET_DTR(0x1bc7, 0x1031, 3)}, /* Telit LE910C1-EUX */
1328         {QMI_QUIRK_SET_DTR(0x1bc7, 0x1040, 2)}, /* Telit LE922A */
1329         {QMI_QUIRK_SET_DTR(0x1bc7, 0x1050, 2)}, /* Telit FN980 */
1330         {QMI_FIXED_INTF(0x1bc7, 0x1100, 3)},    /* Telit ME910 */
1331         {QMI_FIXED_INTF(0x1bc7, 0x1101, 3)},    /* Telit ME910 dual modem */
1332         {QMI_FIXED_INTF(0x1bc7, 0x1200, 5)},    /* Telit LE920 */
1333         {QMI_QUIRK_SET_DTR(0x1bc7, 0x1201, 2)}, /* Telit LE920, LE920A4 */
1334         {QMI_QUIRK_SET_DTR(0x1bc7, 0x1260, 2)}, /* Telit LE910Cx */
1335         {QMI_QUIRK_SET_DTR(0x1bc7, 0x1261, 2)}, /* Telit LE910Cx */
1336         {QMI_QUIRK_SET_DTR(0x1bc7, 0x1900, 1)}, /* Telit LN940 series */
1337         {QMI_FIXED_INTF(0x1c9e, 0x9801, 3)},    /* Telewell TW-3G HSPA+ */
1338         {QMI_FIXED_INTF(0x1c9e, 0x9803, 4)},    /* Telewell TW-3G HSPA+ */
1339         {QMI_FIXED_INTF(0x1c9e, 0x9b01, 3)},    /* XS Stick W100-2 from 4G Systems */
1340         {QMI_FIXED_INTF(0x0b3c, 0xc000, 4)},    /* Olivetti Olicard 100 */
1341         {QMI_FIXED_INTF(0x0b3c, 0xc001, 4)},    /* Olivetti Olicard 120 */
1342         {QMI_FIXED_INTF(0x0b3c, 0xc002, 4)},    /* Olivetti Olicard 140 */
1343         {QMI_FIXED_INTF(0x0b3c, 0xc004, 6)},    /* Olivetti Olicard 155 */
1344         {QMI_FIXED_INTF(0x0b3c, 0xc005, 6)},    /* Olivetti Olicard 200 */
1345         {QMI_FIXED_INTF(0x0b3c, 0xc00a, 6)},    /* Olivetti Olicard 160 */
1346         {QMI_FIXED_INTF(0x0b3c, 0xc00b, 4)},    /* Olivetti Olicard 500 */
1347         {QMI_FIXED_INTF(0x1e2d, 0x0060, 4)},    /* Cinterion PLxx */
1348         {QMI_FIXED_INTF(0x1e2d, 0x0053, 4)},    /* Cinterion PHxx,PXxx */
1349         {QMI_FIXED_INTF(0x1e2d, 0x0063, 10)},   /* Cinterion ALASxx (1 RmNet) */
1350         {QMI_FIXED_INTF(0x1e2d, 0x0082, 4)},    /* Cinterion PHxx,PXxx (2 RmNet) */
1351         {QMI_FIXED_INTF(0x1e2d, 0x0082, 5)},    /* Cinterion PHxx,PXxx (2 RmNet) */
1352         {QMI_FIXED_INTF(0x1e2d, 0x0083, 4)},    /* Cinterion PHxx,PXxx (1 RmNet + USB Audio)*/
1353         {QMI_QUIRK_SET_DTR(0x1e2d, 0x00b0, 4)}, /* Cinterion CLS8 */
1354         {QMI_FIXED_INTF(0x413c, 0x81a2, 8)},    /* Dell Wireless 5806 Gobi(TM) 4G LTE Mobile Broadband Card */
1355         {QMI_FIXED_INTF(0x413c, 0x81a3, 8)},    /* Dell Wireless 5570 HSPA+ (42Mbps) Mobile Broadband Card */
1356         {QMI_FIXED_INTF(0x413c, 0x81a4, 8)},    /* Dell Wireless 5570e HSPA+ (42Mbps) Mobile Broadband Card */
1357         {QMI_FIXED_INTF(0x413c, 0x81a8, 8)},    /* Dell Wireless 5808 Gobi(TM) 4G LTE Mobile Broadband Card */
1358         {QMI_FIXED_INTF(0x413c, 0x81a9, 8)},    /* Dell Wireless 5808e Gobi(TM) 4G LTE Mobile Broadband Card */
1359         {QMI_FIXED_INTF(0x413c, 0x81b1, 8)},    /* Dell Wireless 5809e Gobi(TM) 4G LTE Mobile Broadband Card */
1360         {QMI_FIXED_INTF(0x413c, 0x81b3, 8)},    /* Dell Wireless 5809e Gobi(TM) 4G LTE Mobile Broadband Card (rev3) */
1361         {QMI_FIXED_INTF(0x413c, 0x81b6, 8)},    /* Dell Wireless 5811e */
1362         {QMI_FIXED_INTF(0x413c, 0x81b6, 10)},   /* Dell Wireless 5811e */
1363         {QMI_FIXED_INTF(0x413c, 0x81cc, 8)},    /* Dell Wireless 5816e */
1364         {QMI_FIXED_INTF(0x413c, 0x81d7, 0)},    /* Dell Wireless 5821e */
1365         {QMI_FIXED_INTF(0x413c, 0x81d7, 1)},    /* Dell Wireless 5821e preproduction config */
1366         {QMI_FIXED_INTF(0x413c, 0x81e0, 0)},    /* Dell Wireless 5821e with eSIM support*/
1367         {QMI_FIXED_INTF(0x03f0, 0x4e1d, 8)},    /* HP lt4111 LTE/EV-DO/HSPA+ Gobi 4G Module */
1368         {QMI_FIXED_INTF(0x03f0, 0x9d1d, 1)},    /* HP lt4120 Snapdragon X5 LTE */
1369         {QMI_FIXED_INTF(0x22de, 0x9061, 3)},    /* WeTelecom WPD-600N */
1370         {QMI_QUIRK_SET_DTR(0x1e0e, 0x9001, 5)}, /* SIMCom 7100E, 7230E, 7600E ++ */
1371         {QMI_QUIRK_SET_DTR(0x2c7c, 0x0121, 4)}, /* Quectel EC21 Mini PCIe */
1372         {QMI_QUIRK_SET_DTR(0x2c7c, 0x0191, 4)}, /* Quectel EG91 */
1373         {QMI_FIXED_INTF(0x2c7c, 0x0296, 4)},    /* Quectel BG96 */
1374         {QMI_QUIRK_SET_DTR(0x2cb7, 0x0104, 4)}, /* Fibocom NL678 series */
1375         {QMI_FIXED_INTF(0x0489, 0xe0b4, 0)},    /* Foxconn T77W968 LTE */
1376         {QMI_FIXED_INTF(0x0489, 0xe0b5, 0)},    /* Foxconn T77W968 LTE with eSIM support*/
1377 
1378         /* 4. Gobi 1000 devices */
1379         {QMI_GOBI1K_DEVICE(0x05c6, 0x9212)},    /* Acer Gobi Modem Device */
1380         {QMI_GOBI1K_DEVICE(0x03f0, 0x1f1d)},    /* HP un2400 Gobi Modem Device */
1381         {QMI_GOBI1K_DEVICE(0x04da, 0x250d)},    /* Panasonic Gobi Modem device */
1382         {QMI_GOBI1K_DEVICE(0x413c, 0x8172)},    /* Dell Gobi Modem device */
1383         {QMI_GOBI1K_DEVICE(0x1410, 0xa001)},    /* Novatel/Verizon USB-1000 */
1384         {QMI_GOBI1K_DEVICE(0x1410, 0xa002)},    /* Novatel Gobi Modem device */
1385         {QMI_GOBI1K_DEVICE(0x1410, 0xa003)},    /* Novatel Gobi Modem device */
1386         {QMI_GOBI1K_DEVICE(0x1410, 0xa004)},    /* Novatel Gobi Modem device */
1387         {QMI_GOBI1K_DEVICE(0x1410, 0xa005)},    /* Novatel Gobi Modem device */
1388         {QMI_GOBI1K_DEVICE(0x1410, 0xa006)},    /* Novatel Gobi Modem device */
1389         {QMI_GOBI1K_DEVICE(0x1410, 0xa007)},    /* Novatel Gobi Modem device */
1390         {QMI_GOBI1K_DEVICE(0x0b05, 0x1776)},    /* Asus Gobi Modem device */
1391         {QMI_GOBI1K_DEVICE(0x19d2, 0xfff3)},    /* ONDA Gobi Modem device */
1392         {QMI_GOBI1K_DEVICE(0x05c6, 0x9001)},    /* Generic Gobi Modem device */
1393         {QMI_GOBI1K_DEVICE(0x05c6, 0x9002)},    /* Generic Gobi Modem device */
1394         {QMI_GOBI1K_DEVICE(0x05c6, 0x9202)},    /* Generic Gobi Modem device */
1395         {QMI_GOBI1K_DEVICE(0x05c6, 0x9203)},    /* Generic Gobi Modem device */
1396         {QMI_GOBI1K_DEVICE(0x05c6, 0x9222)},    /* Generic Gobi Modem device */
1397         {QMI_GOBI1K_DEVICE(0x05c6, 0x9009)},    /* Generic Gobi Modem device */
1398 
1399         /* 5. Gobi 2000 and 3000 devices */
1400         {QMI_GOBI_DEVICE(0x413c, 0x8186)},      /* Dell Gobi 2000 Modem device (N0218, VU936) */
1401         {QMI_GOBI_DEVICE(0x413c, 0x8194)},      /* Dell Gobi 3000 Composite */
1402         {QMI_GOBI_DEVICE(0x05c6, 0x920b)},      /* Generic Gobi 2000 Modem device */
1403         {QMI_GOBI_DEVICE(0x05c6, 0x9225)},      /* Sony Gobi 2000 Modem device (N0279, VU730) */
1404         {QMI_GOBI_DEVICE(0x05c6, 0x9245)},      /* Samsung Gobi 2000 Modem device (VL176) */
1405         {QMI_GOBI_DEVICE(0x03f0, 0x251d)},      /* HP Gobi 2000 Modem device (VP412) */
1406         {QMI_GOBI_DEVICE(0x05c6, 0x9215)},      /* Acer Gobi 2000 Modem device (VP413) */
1407         {QMI_FIXED_INTF(0x05c6, 0x9215, 4)},    /* Quectel EC20 Mini PCIe */
1408         {QMI_GOBI_DEVICE(0x05c6, 0x9265)},      /* Asus Gobi 2000 Modem device (VR305) */
1409         {QMI_GOBI_DEVICE(0x05c6, 0x9235)},      /* Top Global Gobi 2000 Modem device (VR306) */
1410         {QMI_GOBI_DEVICE(0x05c6, 0x9275)},      /* iRex Technologies Gobi 2000 Modem device (VR307) */
1411         {QMI_GOBI_DEVICE(0x0af0, 0x8120)},      /* Option GTM681W */
1412         {QMI_GOBI_DEVICE(0x1199, 0x68a5)},      /* Sierra Wireless Modem */
1413         {QMI_GOBI_DEVICE(0x1199, 0x68a9)},      /* Sierra Wireless Modem */
1414         {QMI_GOBI_DEVICE(0x1199, 0x9001)},      /* Sierra Wireless Gobi 2000 Modem device (VT773) */
1415         {QMI_GOBI_DEVICE(0x1199, 0x9002)},      /* Sierra Wireless Gobi 2000 Modem device (VT773) */
1416         {QMI_GOBI_DEVICE(0x1199, 0x9003)},      /* Sierra Wireless Gobi 2000 Modem device (VT773) */
1417         {QMI_GOBI_DEVICE(0x1199, 0x9004)},      /* Sierra Wireless Gobi 2000 Modem device (VT773) */
1418         {QMI_GOBI_DEVICE(0x1199, 0x9005)},      /* Sierra Wireless Gobi 2000 Modem device (VT773) */
1419         {QMI_GOBI_DEVICE(0x1199, 0x9006)},      /* Sierra Wireless Gobi 2000 Modem device (VT773) */
1420         {QMI_GOBI_DEVICE(0x1199, 0x9007)},      /* Sierra Wireless Gobi 2000 Modem device (VT773) */
1421         {QMI_GOBI_DEVICE(0x1199, 0x9008)},      /* Sierra Wireless Gobi 2000 Modem device (VT773) */
1422         {QMI_GOBI_DEVICE(0x1199, 0x9009)},      /* Sierra Wireless Gobi 2000 Modem device (VT773) */
1423         {QMI_GOBI_DEVICE(0x1199, 0x900a)},      /* Sierra Wireless Gobi 2000 Modem device (VT773) */
1424         {QMI_GOBI_DEVICE(0x1199, 0x9011)},      /* Sierra Wireless Gobi 2000 Modem device (MC8305) */
1425         {QMI_GOBI_DEVICE(0x16d8, 0x8002)},      /* CMDTech Gobi 2000 Modem device (VU922) */
1426         {QMI_GOBI_DEVICE(0x05c6, 0x9205)},      /* Gobi 2000 Modem device */
1427         {QMI_GOBI_DEVICE(0x1199, 0x9013)},      /* Sierra Wireless Gobi 3000 Modem device (MC8355) */
1428         {QMI_GOBI_DEVICE(0x03f0, 0x371d)},      /* HP un2430 Mobile Broadband Module */
1429         {QMI_GOBI_DEVICE(0x1199, 0x9015)},      /* Sierra Wireless Gobi 3000 Modem device */
1430         {QMI_GOBI_DEVICE(0x1199, 0x9019)},      /* Sierra Wireless Gobi 3000 Modem device */
1431         {QMI_GOBI_DEVICE(0x1199, 0x901b)},      /* Sierra Wireless MC7770 */
1432         {QMI_GOBI_DEVICE(0x12d1, 0x14f1)},      /* Sony Gobi 3000 Composite */
1433         {QMI_GOBI_DEVICE(0x1410, 0xa021)},      /* Foxconn Gobi 3000 Modem device (Novatel E396) */
1434 
1435         { }                                     /* END */
1436 };
1437 MODULE_DEVICE_TABLE(usb, products);
1438 
1439 static bool quectel_ec20_detected(struct usb_interface *intf)
1440 {
1441         struct usb_device *dev = interface_to_usbdev(intf);
1442 
1443         if (dev->actconfig &&
1444             le16_to_cpu(dev->descriptor.idVendor) == 0x05c6 &&
1445             le16_to_cpu(dev->descriptor.idProduct) == 0x9215 &&
1446             dev->actconfig->desc.bNumInterfaces == 5)
1447                 return true;
1448 
1449         return false;
1450 }
1451 
1452 static int qmi_wwan_probe(struct usb_interface *intf,
1453                           const struct usb_device_id *prod)
1454 {
1455         struct usb_device_id *id = (struct usb_device_id *)prod;
1456         struct usb_interface_descriptor *desc = &intf->cur_altsetting->desc;
1457 
1458         /* Workaround to enable dynamic IDs.  This disables usbnet
1459          * blacklisting functionality.  Which, if required, can be
1460          * reimplemented here by using a magic "blacklist" value
1461          * instead of 0 in the static device id table
1462          */
1463         if (!id->driver_info) {
1464                 dev_dbg(&intf->dev, "setting defaults for dynamic device id\n");
1465                 id->driver_info = (unsigned long)&qmi_wwan_info;
1466         }
1467 
1468         /* There are devices where the same interface number can be
1469          * configured as different functions. We should only bind to
1470          * vendor specific functions when matching on interface number
1471          */
1472         if (id->match_flags & USB_DEVICE_ID_MATCH_INT_NUMBER &&
1473             desc->bInterfaceClass != USB_CLASS_VENDOR_SPEC) {
1474                 dev_dbg(&intf->dev,
1475                         "Rejecting interface number match for class %02x\n",
1476                         desc->bInterfaceClass);
1477                 return -ENODEV;
1478         }
1479 
1480         /* Quectel EC20 quirk where we've QMI on interface 4 instead of 0 */
1481         if (quectel_ec20_detected(intf) && desc->bInterfaceNumber == 0) {
1482                 dev_dbg(&intf->dev, "Quectel EC20 quirk, skipping interface 0\n");
1483                 return -ENODEV;
1484         }
1485 
1486         /* Several Quectel modems supports dynamic interface configuration, so
1487          * we need to match on class/subclass/protocol. These values are
1488          * identical for the diagnostic- and QMI-interface, but bNumEndpoints is
1489          * different. Ignore the current interface if the number of endpoints
1490          * equals the number for the diag interface (two).
1491          */
1492         if (desc->bNumEndpoints == 2)
1493                 return -ENODEV;
1494 
1495         return usbnet_probe(intf, id);
1496 }
1497 
1498 static void qmi_wwan_disconnect(struct usb_interface *intf)
1499 {
1500         struct usbnet *dev = usb_get_intfdata(intf);
1501         struct qmi_wwan_state *info;
1502         struct list_head *iter;
1503         struct net_device *ldev;
1504         LIST_HEAD(list);
1505 
1506         /* called twice if separate control and data intf */
1507         if (!dev)
1508                 return;
1509         info = (void *)&dev->data;
1510         if (info->flags & QMI_WWAN_FLAG_MUX) {
1511                 if (!rtnl_trylock()) {
1512                         restart_syscall();
1513                         return;
1514                 }
1515                 rcu_read_lock();
1516                 netdev_for_each_upper_dev_rcu(dev->net, ldev, iter)
1517                         qmimux_unregister_device(ldev, &list);
1518                 rcu_read_unlock();
1519                 unregister_netdevice_many(&list);
1520                 rtnl_unlock();
1521                 info->flags &= ~QMI_WWAN_FLAG_MUX;
1522         }
1523         usbnet_disconnect(intf);
1524 }
1525 
1526 static struct usb_driver qmi_wwan_driver = {
1527         .name                 = "qmi_wwan",
1528         .id_table             = products,
1529         .probe                = qmi_wwan_probe,
1530         .disconnect           = qmi_wwan_disconnect,
1531         .suspend              = qmi_wwan_suspend,
1532         .resume               = qmi_wwan_resume,
1533         .reset_resume         = qmi_wwan_resume,
1534         .supports_autosuspend = 1,
1535         .disable_hub_initiated_lpm = 1,
1536 };
1537 
1538 module_usb_driver(qmi_wwan_driver);
1539 
1540 MODULE_AUTHOR("Bjørn Mork <bjorn@mork.no>");
1541 MODULE_DESCRIPTION("Qualcomm MSM Interface (QMI) WWAN driver");
1542 MODULE_LICENSE("GPL");
/* [<][>][^][v][top][bottom][index][help] */
root/drivers/net/usb/qmi_wwan.c

DEFINITIONS
