linux/drivers/net/usb/qmi_wwan.c
<<
>>
Prefs
   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 */
  49struct 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
  57enum qmi_wwan_flags {
  58        QMI_WWAN_FLAG_RAWIP = 1 << 0,
  59        QMI_WWAN_FLAG_MUX = 1 << 1,
  60        QMI_WWAN_FLAG_PASS_THROUGH = 1 << 2,
  61};
  62
  63enum qmi_wwan_quirks {
  64        QMI_WWAN_QUIRK_DTR = 1 << 0,    /* needs "set DTR" request */
  65};
  66
  67struct qmimux_hdr {
  68        u8 pad;
  69        u8 mux_id;
  70        __be16 pkt_len;
  71};
  72
  73struct qmimux_priv {
  74        struct net_device *real_dev;
  75        u8 mux_id;
  76};
  77
  78static 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
  91static int qmimux_stop(struct net_device *dev)
  92{
  93        netif_carrier_off(dev);
  94        return 0;
  95}
  96
  97static 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                dev_sw_netstats_tx_add(dev, 1, len);
 113        else
 114                dev->stats.tx_dropped++;
 115
 116        return ret;
 117}
 118
 119static const struct net_device_ops qmimux_netdev_ops = {
 120        .ndo_open        = qmimux_open,
 121        .ndo_stop        = qmimux_stop,
 122        .ndo_start_xmit  = qmimux_start_xmit,
 123        .ndo_get_stats64 = dev_get_tstats64,
 124};
 125
 126static void qmimux_setup(struct net_device *dev)
 127{
 128        dev->header_ops      = NULL;  /* No header */
 129        dev->type            = ARPHRD_NONE;
 130        dev->hard_header_len = 0;
 131        dev->addr_len        = 0;
 132        dev->flags           = IFF_POINTOPOINT | IFF_NOARP | IFF_MULTICAST;
 133        dev->netdev_ops      = &qmimux_netdev_ops;
 134        dev->mtu             = 1500;
 135        dev->needs_free_netdev = true;
 136}
 137
 138static struct net_device *qmimux_find_dev(struct usbnet *dev, u8 mux_id)
 139{
 140        struct qmimux_priv *priv;
 141        struct list_head *iter;
 142        struct net_device *ldev;
 143
 144        rcu_read_lock();
 145        netdev_for_each_upper_dev_rcu(dev->net, ldev, iter) {
 146                priv = netdev_priv(ldev);
 147                if (priv->mux_id == mux_id) {
 148                        rcu_read_unlock();
 149                        return ldev;
 150                }
 151        }
 152        rcu_read_unlock();
 153        return NULL;
 154}
 155
 156static bool qmimux_has_slaves(struct usbnet *dev)
 157{
 158        return !list_empty(&dev->net->adj_list.upper);
 159}
 160
 161static int qmimux_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
 162{
 163        unsigned int len, offset = 0, pad_len, pkt_len;
 164        struct qmimux_hdr *hdr;
 165        struct net_device *net;
 166        struct sk_buff *skbn;
 167        u8 qmimux_hdr_sz = sizeof(*hdr);
 168
 169        while (offset + qmimux_hdr_sz < skb->len) {
 170                hdr = (struct qmimux_hdr *)(skb->data + offset);
 171                len = be16_to_cpu(hdr->pkt_len);
 172
 173                /* drop the packet, bogus length */
 174                if (offset + len + qmimux_hdr_sz > skb->len)
 175                        return 0;
 176
 177                /* control packet, we do not know what to do */
 178                if (hdr->pad & 0x80)
 179                        goto skip;
 180
 181                /* extract padding length and check for valid length info */
 182                pad_len = hdr->pad & 0x3f;
 183                if (len == 0 || pad_len >= len)
 184                        goto skip;
 185                pkt_len = len - pad_len;
 186
 187                net = qmimux_find_dev(dev, hdr->mux_id);
 188                if (!net)
 189                        goto skip;
 190                skbn = netdev_alloc_skb(net, pkt_len + LL_MAX_HEADER);
 191                if (!skbn)
 192                        return 0;
 193                skbn->dev = net;
 194
 195                switch (skb->data[offset + qmimux_hdr_sz] & 0xf0) {
 196                case 0x40:
 197                        skbn->protocol = htons(ETH_P_IP);
 198                        break;
 199                case 0x60:
 200                        skbn->protocol = htons(ETH_P_IPV6);
 201                        break;
 202                default:
 203                        /* not ip - do not know what to do */
 204                        goto skip;
 205                }
 206
 207                skb_reserve(skbn, LL_MAX_HEADER);
 208                skb_put_data(skbn, skb->data + offset + qmimux_hdr_sz, pkt_len);
 209                if (netif_rx(skbn) != NET_RX_SUCCESS) {
 210                        net->stats.rx_errors++;
 211                        return 0;
 212                } else {
 213                        dev_sw_netstats_rx_add(net, pkt_len);
 214                }
 215
 216skip:
 217                offset += len + qmimux_hdr_sz;
 218        }
 219        return 1;
 220}
 221
 222static ssize_t mux_id_show(struct device *d, struct device_attribute *attr, char *buf)
 223{
 224        struct net_device *dev = to_net_dev(d);
 225        struct qmimux_priv *priv;
 226
 227        priv = netdev_priv(dev);
 228
 229        return sysfs_emit(buf, "0x%02x\n", priv->mux_id);
 230}
 231
 232static DEVICE_ATTR_RO(mux_id);
 233
 234static struct attribute *qmi_wwan_sysfs_qmimux_attrs[] = {
 235        &dev_attr_mux_id.attr,
 236        NULL,
 237};
 238
 239static struct attribute_group qmi_wwan_sysfs_qmimux_attr_group = {
 240        .name = "qmap",
 241        .attrs = qmi_wwan_sysfs_qmimux_attrs,
 242};
 243
 244static int qmimux_register_device(struct net_device *real_dev, u8 mux_id)
 245{
 246        struct net_device *new_dev;
 247        struct qmimux_priv *priv;
 248        int err;
 249
 250        new_dev = alloc_netdev(sizeof(struct qmimux_priv),
 251                               "qmimux%d", NET_NAME_UNKNOWN, qmimux_setup);
 252        if (!new_dev)
 253                return -ENOBUFS;
 254
 255        dev_net_set(new_dev, dev_net(real_dev));
 256        priv = netdev_priv(new_dev);
 257        priv->mux_id = mux_id;
 258        priv->real_dev = real_dev;
 259
 260        new_dev->tstats = netdev_alloc_pcpu_stats(struct pcpu_sw_netstats);
 261        if (!new_dev->tstats) {
 262                err = -ENOBUFS;
 263                goto out_free_newdev;
 264        }
 265
 266        new_dev->sysfs_groups[0] = &qmi_wwan_sysfs_qmimux_attr_group;
 267
 268        err = register_netdevice(new_dev);
 269        if (err < 0)
 270                goto out_free_newdev;
 271
 272        /* Account for reference in struct qmimux_priv_priv */
 273        dev_hold(real_dev);
 274
 275        err = netdev_upper_dev_link(real_dev, new_dev, NULL);
 276        if (err)
 277                goto out_unregister_netdev;
 278
 279        netif_stacked_transfer_operstate(real_dev, new_dev);
 280
 281        return 0;
 282
 283out_unregister_netdev:
 284        unregister_netdevice(new_dev);
 285        dev_put(real_dev);
 286
 287out_free_newdev:
 288        free_netdev(new_dev);
 289        return err;
 290}
 291
 292static void qmimux_unregister_device(struct net_device *dev,
 293                                     struct list_head *head)
 294{
 295        struct qmimux_priv *priv = netdev_priv(dev);
 296        struct net_device *real_dev = priv->real_dev;
 297
 298        free_percpu(dev->tstats);
 299        netdev_upper_dev_unlink(real_dev, dev);
 300        unregister_netdevice_queue(dev, head);
 301
 302        /* Get rid of the reference to real_dev */
 303        dev_put(real_dev);
 304}
 305
 306static void qmi_wwan_netdev_setup(struct net_device *net)
 307{
 308        struct usbnet *dev = netdev_priv(net);
 309        struct qmi_wwan_state *info = (void *)&dev->data;
 310
 311        if (info->flags & QMI_WWAN_FLAG_RAWIP) {
 312                net->header_ops      = NULL;  /* No header */
 313                net->type            = ARPHRD_NONE;
 314                net->hard_header_len = 0;
 315                net->addr_len        = 0;
 316                net->flags           = IFF_POINTOPOINT | IFF_NOARP | IFF_MULTICAST;
 317                set_bit(EVENT_NO_IP_ALIGN, &dev->flags);
 318                netdev_dbg(net, "mode: raw IP\n");
 319        } else if (!net->header_ops) { /* don't bother if already set */
 320                ether_setup(net);
 321                /* Restoring min/max mtu values set originally by usbnet */
 322                net->min_mtu = 0;
 323                net->max_mtu = ETH_MAX_MTU;
 324                clear_bit(EVENT_NO_IP_ALIGN, &dev->flags);
 325                netdev_dbg(net, "mode: Ethernet\n");
 326        }
 327
 328        /* recalculate buffers after changing hard_header_len */
 329        usbnet_change_mtu(net, net->mtu);
 330}
 331
 332static ssize_t raw_ip_show(struct device *d, struct device_attribute *attr, char *buf)
 333{
 334        struct usbnet *dev = netdev_priv(to_net_dev(d));
 335        struct qmi_wwan_state *info = (void *)&dev->data;
 336
 337        return sprintf(buf, "%c\n", info->flags & QMI_WWAN_FLAG_RAWIP ? 'Y' : 'N');
 338}
 339
 340static ssize_t raw_ip_store(struct device *d,  struct device_attribute *attr, const char *buf, size_t len)
 341{
 342        struct usbnet *dev = netdev_priv(to_net_dev(d));
 343        struct qmi_wwan_state *info = (void *)&dev->data;
 344        bool enable;
 345        int ret;
 346
 347        if (strtobool(buf, &enable))
 348                return -EINVAL;
 349
 350        /* no change? */
 351        if (enable == (info->flags & QMI_WWAN_FLAG_RAWIP))
 352                return len;
 353
 354        /* ip mode cannot be cleared when pass through mode is set */
 355        if (!enable && (info->flags & QMI_WWAN_FLAG_PASS_THROUGH)) {
 356                netdev_err(dev->net,
 357                           "Cannot clear ip mode on pass through device\n");
 358                return -EINVAL;
 359        }
 360
 361        if (!rtnl_trylock())
 362                return restart_syscall();
 363
 364        /* we don't want to modify a running netdev */
 365        if (netif_running(dev->net)) {
 366                netdev_err(dev->net, "Cannot change a running device\n");
 367                ret = -EBUSY;
 368                goto err;
 369        }
 370
 371        /* let other drivers deny the change */
 372        ret = call_netdevice_notifiers(NETDEV_PRE_TYPE_CHANGE, dev->net);
 373        ret = notifier_to_errno(ret);
 374        if (ret) {
 375                netdev_err(dev->net, "Type change was refused\n");
 376                goto err;
 377        }
 378
 379        if (enable)
 380                info->flags |= QMI_WWAN_FLAG_RAWIP;
 381        else
 382                info->flags &= ~QMI_WWAN_FLAG_RAWIP;
 383        qmi_wwan_netdev_setup(dev->net);
 384        call_netdevice_notifiers(NETDEV_POST_TYPE_CHANGE, dev->net);
 385        ret = len;
 386err:
 387        rtnl_unlock();
 388        return ret;
 389}
 390
 391static ssize_t add_mux_show(struct device *d, struct device_attribute *attr, char *buf)
 392{
 393        struct net_device *dev = to_net_dev(d);
 394        struct qmimux_priv *priv;
 395        struct list_head *iter;
 396        struct net_device *ldev;
 397        ssize_t count = 0;
 398
 399        rcu_read_lock();
 400        netdev_for_each_upper_dev_rcu(dev, ldev, iter) {
 401                priv = netdev_priv(ldev);
 402                count += scnprintf(&buf[count], PAGE_SIZE - count,
 403                                   "0x%02x\n", priv->mux_id);
 404        }
 405        rcu_read_unlock();
 406        return count;
 407}
 408
 409static ssize_t add_mux_store(struct device *d,  struct device_attribute *attr, const char *buf, size_t len)
 410{
 411        struct usbnet *dev = netdev_priv(to_net_dev(d));
 412        struct qmi_wwan_state *info = (void *)&dev->data;
 413        u8 mux_id;
 414        int ret;
 415
 416        if (kstrtou8(buf, 0, &mux_id))
 417                return -EINVAL;
 418
 419        /* mux_id [1 - 254] for compatibility with ip(8) and the rmnet driver */
 420        if (mux_id < 1 || mux_id > 254)
 421                return -EINVAL;
 422
 423        if (!rtnl_trylock())
 424                return restart_syscall();
 425
 426        if (qmimux_find_dev(dev, mux_id)) {
 427                netdev_err(dev->net, "mux_id already present\n");
 428                ret = -EINVAL;
 429                goto err;
 430        }
 431
 432        ret = qmimux_register_device(dev->net, mux_id);
 433        if (!ret) {
 434                info->flags |= QMI_WWAN_FLAG_MUX;
 435                ret = len;
 436        }
 437err:
 438        rtnl_unlock();
 439        return ret;
 440}
 441
 442static ssize_t del_mux_show(struct device *d, struct device_attribute *attr, char *buf)
 443{
 444        return add_mux_show(d, attr, buf);
 445}
 446
 447static ssize_t del_mux_store(struct device *d,  struct device_attribute *attr, const char *buf, size_t len)
 448{
 449        struct usbnet *dev = netdev_priv(to_net_dev(d));
 450        struct qmi_wwan_state *info = (void *)&dev->data;
 451        struct net_device *del_dev;
 452        u8 mux_id;
 453        int ret = 0;
 454
 455        if (kstrtou8(buf, 0, &mux_id))
 456                return -EINVAL;
 457
 458        if (!rtnl_trylock())
 459                return restart_syscall();
 460
 461        del_dev = qmimux_find_dev(dev, mux_id);
 462        if (!del_dev) {
 463                netdev_err(dev->net, "mux_id not present\n");
 464                ret = -EINVAL;
 465                goto err;
 466        }
 467        qmimux_unregister_device(del_dev, NULL);
 468
 469        if (!qmimux_has_slaves(dev))
 470                info->flags &= ~QMI_WWAN_FLAG_MUX;
 471        ret = len;
 472err:
 473        rtnl_unlock();
 474        return ret;
 475}
 476
 477static ssize_t pass_through_show(struct device *d,
 478                                 struct device_attribute *attr, char *buf)
 479{
 480        struct usbnet *dev = netdev_priv(to_net_dev(d));
 481        struct qmi_wwan_state *info;
 482
 483        info = (void *)&dev->data;
 484        return sprintf(buf, "%c\n",
 485                       info->flags & QMI_WWAN_FLAG_PASS_THROUGH ? 'Y' : 'N');
 486}
 487
 488static ssize_t pass_through_store(struct device *d,
 489                                  struct device_attribute *attr,
 490                                  const char *buf, size_t len)
 491{
 492        struct usbnet *dev = netdev_priv(to_net_dev(d));
 493        struct qmi_wwan_state *info;
 494        bool enable;
 495
 496        if (strtobool(buf, &enable))
 497                return -EINVAL;
 498
 499        info = (void *)&dev->data;
 500
 501        /* no change? */
 502        if (enable == (info->flags & QMI_WWAN_FLAG_PASS_THROUGH))
 503                return len;
 504
 505        /* pass through mode can be set for raw ip devices only */
 506        if (!(info->flags & QMI_WWAN_FLAG_RAWIP)) {
 507                netdev_err(dev->net,
 508                           "Cannot set pass through mode on non ip device\n");
 509                return -EINVAL;
 510        }
 511
 512        if (enable)
 513                info->flags |= QMI_WWAN_FLAG_PASS_THROUGH;
 514        else
 515                info->flags &= ~QMI_WWAN_FLAG_PASS_THROUGH;
 516
 517        return len;
 518}
 519
 520static DEVICE_ATTR_RW(raw_ip);
 521static DEVICE_ATTR_RW(add_mux);
 522static DEVICE_ATTR_RW(del_mux);
 523static DEVICE_ATTR_RW(pass_through);
 524
 525static struct attribute *qmi_wwan_sysfs_attrs[] = {
 526        &dev_attr_raw_ip.attr,
 527        &dev_attr_add_mux.attr,
 528        &dev_attr_del_mux.attr,
 529        &dev_attr_pass_through.attr,
 530        NULL,
 531};
 532
 533static struct attribute_group qmi_wwan_sysfs_attr_group = {
 534        .name = "qmi",
 535        .attrs = qmi_wwan_sysfs_attrs,
 536};
 537
 538/* default ethernet address used by the modem */
 539static const u8 default_modem_addr[ETH_ALEN] = {0x02, 0x50, 0xf3};
 540
 541static const u8 buggy_fw_addr[ETH_ALEN] = {0x00, 0xa0, 0xc6, 0x00, 0x00, 0x00};
 542
 543/* Make up an ethernet header if the packet doesn't have one.
 544 *
 545 * A firmware bug common among several devices cause them to send raw
 546 * IP packets under some circumstances.  There is no way for the
 547 * driver/host to know when this will happen.  And even when the bug
 548 * hits, some packets will still arrive with an intact header.
 549 *
 550 * The supported devices are only capably of sending IPv4, IPv6 and
 551 * ARP packets on a point-to-point link. Any packet with an ethernet
 552 * header will have either our address or a broadcast/multicast
 553 * address as destination.  ARP packets will always have a header.
 554 *
 555 * This means that this function will reliably add the appropriate
 556 * header iff necessary, provided our hardware address does not start
 557 * with 4 or 6.
 558 *
 559 * Another common firmware bug results in all packets being addressed
 560 * to 00:a0:c6:00:00:00 despite the host address being different.
 561 * This function will also fixup such packets.
 562 */
 563static int qmi_wwan_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
 564{
 565        struct qmi_wwan_state *info = (void *)&dev->data;
 566        bool rawip = info->flags & QMI_WWAN_FLAG_RAWIP;
 567        __be16 proto;
 568
 569        /* This check is no longer done by usbnet */
 570        if (skb->len < dev->net->hard_header_len)
 571                return 0;
 572
 573        if (info->flags & QMI_WWAN_FLAG_MUX)
 574                return qmimux_rx_fixup(dev, skb);
 575
 576        if (info->flags & QMI_WWAN_FLAG_PASS_THROUGH) {
 577                skb->protocol = htons(ETH_P_MAP);
 578                return 1;
 579        }
 580
 581        switch (skb->data[0] & 0xf0) {
 582        case 0x40:
 583                proto = htons(ETH_P_IP);
 584                break;
 585        case 0x60:
 586                proto = htons(ETH_P_IPV6);
 587                break;
 588        case 0x00:
 589                if (rawip)
 590                        return 0;
 591                if (is_multicast_ether_addr(skb->data))
 592                        return 1;
 593                /* possibly bogus destination - rewrite just in case */
 594                skb_reset_mac_header(skb);
 595                goto fix_dest;
 596        default:
 597                if (rawip)
 598                        return 0;
 599                /* pass along other packets without modifications */
 600                return 1;
 601        }
 602        if (rawip) {
 603                skb_reset_mac_header(skb);
 604                skb->dev = dev->net; /* normally set by eth_type_trans */
 605                skb->protocol = proto;
 606                return 1;
 607        }
 608
 609        if (skb_headroom(skb) < ETH_HLEN)
 610                return 0;
 611        skb_push(skb, ETH_HLEN);
 612        skb_reset_mac_header(skb);
 613        eth_hdr(skb)->h_proto = proto;
 614        eth_zero_addr(eth_hdr(skb)->h_source);
 615fix_dest:
 616        memcpy(eth_hdr(skb)->h_dest, dev->net->dev_addr, ETH_ALEN);
 617        return 1;
 618}
 619
 620/* very simplistic detection of IPv4 or IPv6 headers */
 621static bool possibly_iphdr(const char *data)
 622{
 623        return (data[0] & 0xd0) == 0x40;
 624}
 625
 626/* disallow addresses which may be confused with IP headers */
 627static int qmi_wwan_mac_addr(struct net_device *dev, void *p)
 628{
 629        int ret;
 630        struct sockaddr *addr = p;
 631
 632        ret = eth_prepare_mac_addr_change(dev, p);
 633        if (ret < 0)
 634                return ret;
 635        if (possibly_iphdr(addr->sa_data))
 636                return -EADDRNOTAVAIL;
 637        eth_commit_mac_addr_change(dev, p);
 638        return 0;
 639}
 640
 641static const struct net_device_ops qmi_wwan_netdev_ops = {
 642        .ndo_open               = usbnet_open,
 643        .ndo_stop               = usbnet_stop,
 644        .ndo_start_xmit         = usbnet_start_xmit,
 645        .ndo_tx_timeout         = usbnet_tx_timeout,
 646        .ndo_change_mtu         = usbnet_change_mtu,
 647        .ndo_get_stats64        = dev_get_tstats64,
 648        .ndo_set_mac_address    = qmi_wwan_mac_addr,
 649        .ndo_validate_addr      = eth_validate_addr,
 650};
 651
 652/* using a counter to merge subdriver requests with our own into a
 653 * combined state
 654 */
 655static int qmi_wwan_manage_power(struct usbnet *dev, int on)
 656{
 657        struct qmi_wwan_state *info = (void *)&dev->data;
 658        int rv;
 659
 660        dev_dbg(&dev->intf->dev, "%s() pmcount=%d, on=%d\n", __func__,
 661                atomic_read(&info->pmcount), on);
 662
 663        if ((on && atomic_add_return(1, &info->pmcount) == 1) ||
 664            (!on && atomic_dec_and_test(&info->pmcount))) {
 665                /* need autopm_get/put here to ensure the usbcore sees
 666                 * the new value
 667                 */
 668                rv = usb_autopm_get_interface(dev->intf);
 669                dev->intf->needs_remote_wakeup = on;
 670                if (!rv)
 671                        usb_autopm_put_interface(dev->intf);
 672        }
 673        return 0;
 674}
 675
 676static int qmi_wwan_cdc_wdm_manage_power(struct usb_interface *intf, int on)
 677{
 678        struct usbnet *dev = usb_get_intfdata(intf);
 679
 680        /* can be called while disconnecting */
 681        if (!dev)
 682                return 0;
 683        return qmi_wwan_manage_power(dev, on);
 684}
 685
 686/* collect all three endpoints and register subdriver */
 687static int qmi_wwan_register_subdriver(struct usbnet *dev)
 688{
 689        int rv;
 690        struct usb_driver *subdriver = NULL;
 691        struct qmi_wwan_state *info = (void *)&dev->data;
 692
 693        /* collect bulk endpoints */
 694        rv = usbnet_get_endpoints(dev, info->data);
 695        if (rv < 0)
 696                goto err;
 697
 698        /* update status endpoint if separate control interface */
 699        if (info->control != info->data)
 700                dev->status = &info->control->cur_altsetting->endpoint[0];
 701
 702        /* require interrupt endpoint for subdriver */
 703        if (!dev->status) {
 704                rv = -EINVAL;
 705                goto err;
 706        }
 707
 708        /* for subdriver power management */
 709        atomic_set(&info->pmcount, 0);
 710
 711        /* register subdriver */
 712        subdriver = usb_cdc_wdm_register(info->control, &dev->status->desc,
 713                                         4096, WWAN_PORT_QMI,
 714                                         &qmi_wwan_cdc_wdm_manage_power);
 715        if (IS_ERR(subdriver)) {
 716                dev_err(&info->control->dev, "subdriver registration failed\n");
 717                rv = PTR_ERR(subdriver);
 718                goto err;
 719        }
 720
 721        /* prevent usbnet from using status endpoint */
 722        dev->status = NULL;
 723
 724        /* save subdriver struct for suspend/resume wrappers */
 725        info->subdriver = subdriver;
 726
 727err:
 728        return rv;
 729}
 730
 731/* Send CDC SetControlLineState request, setting or clearing the DTR.
 732 * "Required for Autoconnect and 9x30 to wake up" according to the
 733 * GobiNet driver. The requirement has been verified on an MDM9230
 734 * based Sierra Wireless MC7455
 735 */
 736static int qmi_wwan_change_dtr(struct usbnet *dev, bool on)
 737{
 738        u8 intf = dev->intf->cur_altsetting->desc.bInterfaceNumber;
 739
 740        return usbnet_write_cmd(dev, USB_CDC_REQ_SET_CONTROL_LINE_STATE,
 741                                USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
 742                                on ? 0x01 : 0x00, intf, NULL, 0);
 743}
 744
 745static int qmi_wwan_bind(struct usbnet *dev, struct usb_interface *intf)
 746{
 747        int status;
 748        u8 *buf = intf->cur_altsetting->extra;
 749        int len = intf->cur_altsetting->extralen;
 750        struct usb_interface_descriptor *desc = &intf->cur_altsetting->desc;
 751        struct usb_cdc_union_desc *cdc_union;
 752        struct usb_cdc_ether_desc *cdc_ether;
 753        struct usb_driver *driver = driver_of(intf);
 754        struct qmi_wwan_state *info = (void *)&dev->data;
 755        struct usb_cdc_parsed_header hdr;
 756
 757        BUILD_BUG_ON((sizeof(((struct usbnet *)0)->data) <
 758                      sizeof(struct qmi_wwan_state)));
 759
 760        /* set up initial state */
 761        info->control = intf;
 762        info->data = intf;
 763
 764        /* and a number of CDC descriptors */
 765        cdc_parse_cdc_header(&hdr, intf, buf, len);
 766        cdc_union = hdr.usb_cdc_union_desc;
 767        cdc_ether = hdr.usb_cdc_ether_desc;
 768
 769        /* Use separate control and data interfaces if we found a CDC Union */
 770        if (cdc_union) {
 771                info->data = usb_ifnum_to_if(dev->udev,
 772                                             cdc_union->bSlaveInterface0);
 773                if (desc->bInterfaceNumber != cdc_union->bMasterInterface0 ||
 774                    !info->data) {
 775                        dev_err(&intf->dev,
 776                                "bogus CDC Union: master=%u, slave=%u\n",
 777                                cdc_union->bMasterInterface0,
 778                                cdc_union->bSlaveInterface0);
 779
 780                        /* ignore and continue... */
 781                        cdc_union = NULL;
 782                        info->data = intf;
 783                }
 784        }
 785
 786        /* errors aren't fatal - we can live with the dynamic address */
 787        if (cdc_ether && cdc_ether->wMaxSegmentSize) {
 788                dev->hard_mtu = le16_to_cpu(cdc_ether->wMaxSegmentSize);
 789                usbnet_get_ethernet_addr(dev, cdc_ether->iMACAddress);
 790        }
 791
 792        /* claim data interface and set it up */
 793        if (info->control != info->data) {
 794                status = usb_driver_claim_interface(driver, info->data, dev);
 795                if (status < 0)
 796                        goto err;
 797        }
 798
 799        status = qmi_wwan_register_subdriver(dev);
 800        if (status < 0 && info->control != info->data) {
 801                usb_set_intfdata(info->data, NULL);
 802                usb_driver_release_interface(driver, info->data);
 803        }
 804
 805        /* disabling remote wakeup on MDM9x30 devices has the same
 806         * effect as clearing DTR. The device will not respond to QMI
 807         * requests until we set DTR again.  This is similar to a
 808         * QMI_CTL SYNC request, clearing a lot of firmware state
 809         * including the client ID allocations.
 810         *
 811         * Our usage model allows a session to span multiple
 812         * open/close events, so we must prevent the firmware from
 813         * clearing out state the clients might need.
 814         *
 815         * MDM9x30 is the first QMI chipset with USB3 support. Abuse
 816         * this fact to enable the quirk for all USB3 devices.
 817         *
 818         * There are also chipsets with the same "set DTR" requirement
 819         * but without USB3 support.  Devices based on these chips
 820         * need a quirk flag in the device ID table.
 821         */
 822        if (dev->driver_info->data & QMI_WWAN_QUIRK_DTR ||
 823            le16_to_cpu(dev->udev->descriptor.bcdUSB) >= 0x0201) {
 824                qmi_wwan_manage_power(dev, 1);
 825                qmi_wwan_change_dtr(dev, true);
 826        }
 827
 828        /* Never use the same address on both ends of the link, even if the
 829         * buggy firmware told us to. Or, if device is assigned the well-known
 830         * buggy firmware MAC address, replace it with a random address,
 831         */
 832        if (ether_addr_equal(dev->net->dev_addr, default_modem_addr) ||
 833            ether_addr_equal(dev->net->dev_addr, buggy_fw_addr))
 834                eth_hw_addr_random(dev->net);
 835
 836        /* make MAC addr easily distinguishable from an IP header */
 837        if (possibly_iphdr(dev->net->dev_addr)) {
 838                u8 addr = dev->net->dev_addr[0];
 839
 840                addr |= 0x02;   /* set local assignment bit */
 841                addr &= 0xbf;   /* clear "IP" bit */
 842                dev_addr_mod(dev->net, 0, &addr, 1);
 843        }
 844        dev->net->netdev_ops = &qmi_wwan_netdev_ops;
 845        dev->net->sysfs_groups[0] = &qmi_wwan_sysfs_attr_group;
 846err:
 847        return status;
 848}
 849
 850static void qmi_wwan_unbind(struct usbnet *dev, struct usb_interface *intf)
 851{
 852        struct qmi_wwan_state *info = (void *)&dev->data;
 853        struct usb_driver *driver = driver_of(intf);
 854        struct usb_interface *other;
 855
 856        if (info->subdriver && info->subdriver->disconnect)
 857                info->subdriver->disconnect(info->control);
 858
 859        /* disable MDM9x30 quirk */
 860        if (le16_to_cpu(dev->udev->descriptor.bcdUSB) >= 0x0201) {
 861                qmi_wwan_change_dtr(dev, false);
 862                qmi_wwan_manage_power(dev, 0);
 863        }
 864
 865        /* allow user to unbind using either control or data */
 866        if (intf == info->control)
 867                other = info->data;
 868        else
 869                other = info->control;
 870
 871        /* only if not shared */
 872        if (other && intf != other) {
 873                usb_set_intfdata(other, NULL);
 874                usb_driver_release_interface(driver, other);
 875        }
 876
 877        info->subdriver = NULL;
 878        info->data = NULL;
 879        info->control = NULL;
 880}
 881
 882/* suspend/resume wrappers calling both usbnet and the cdc-wdm
 883 * subdriver if present.
 884 *
 885 * NOTE: cdc-wdm also supports pre/post_reset, but we cannot provide
 886 * wrappers for those without adding usbnet reset support first.
 887 */
 888static int qmi_wwan_suspend(struct usb_interface *intf, pm_message_t message)
 889{
 890        struct usbnet *dev = usb_get_intfdata(intf);
 891        struct qmi_wwan_state *info = (void *)&dev->data;
 892        int ret;
 893
 894        /* Both usbnet_suspend() and subdriver->suspend() MUST return 0
 895         * in system sleep context, otherwise, the resume callback has
 896         * to recover device from previous suspend failure.
 897         */
 898        ret = usbnet_suspend(intf, message);
 899        if (ret < 0)
 900                goto err;
 901
 902        if (intf == info->control && info->subdriver &&
 903            info->subdriver->suspend)
 904                ret = info->subdriver->suspend(intf, message);
 905        if (ret < 0)
 906                usbnet_resume(intf);
 907err:
 908        return ret;
 909}
 910
 911static int qmi_wwan_resume(struct usb_interface *intf)
 912{
 913        struct usbnet *dev = usb_get_intfdata(intf);
 914        struct qmi_wwan_state *info = (void *)&dev->data;
 915        int ret = 0;
 916        bool callsub = (intf == info->control && info->subdriver &&
 917                        info->subdriver->resume);
 918
 919        if (callsub)
 920                ret = info->subdriver->resume(intf);
 921        if (ret < 0)
 922                goto err;
 923        ret = usbnet_resume(intf);
 924        if (ret < 0 && callsub)
 925                info->subdriver->suspend(intf, PMSG_SUSPEND);
 926err:
 927        return ret;
 928}
 929
 930static const struct driver_info qmi_wwan_info = {
 931        .description    = "WWAN/QMI device",
 932        .flags          = FLAG_WWAN | FLAG_SEND_ZLP,
 933        .bind           = qmi_wwan_bind,
 934        .unbind         = qmi_wwan_unbind,
 935        .manage_power   = qmi_wwan_manage_power,
 936        .rx_fixup       = qmi_wwan_rx_fixup,
 937};
 938
 939static const struct driver_info qmi_wwan_info_quirk_dtr = {
 940        .description    = "WWAN/QMI device",
 941        .flags          = FLAG_WWAN | FLAG_SEND_ZLP,
 942        .bind           = qmi_wwan_bind,
 943        .unbind         = qmi_wwan_unbind,
 944        .manage_power   = qmi_wwan_manage_power,
 945        .rx_fixup       = qmi_wwan_rx_fixup,
 946        .data           = QMI_WWAN_QUIRK_DTR,
 947};
 948
 949#define HUAWEI_VENDOR_ID        0x12D1
 950
 951/* map QMI/wwan function by a fixed interface number */
 952#define QMI_FIXED_INTF(vend, prod, num) \
 953        USB_DEVICE_INTERFACE_NUMBER(vend, prod, num), \
 954        .driver_info = (unsigned long)&qmi_wwan_info
 955
 956/* devices requiring "set DTR" quirk */
 957#define QMI_QUIRK_SET_DTR(vend, prod, num) \
 958        USB_DEVICE_INTERFACE_NUMBER(vend, prod, num), \
 959        .driver_info = (unsigned long)&qmi_wwan_info_quirk_dtr
 960
 961/* Gobi 1000 QMI/wwan interface number is 3 according to qcserial */
 962#define QMI_GOBI1K_DEVICE(vend, prod) \
 963        QMI_FIXED_INTF(vend, prod, 3)
 964
 965/* Gobi 2000/3000 QMI/wwan interface number is 0 according to qcserial */
 966#define QMI_GOBI_DEVICE(vend, prod) \
 967        QMI_FIXED_INTF(vend, prod, 0)
 968
 969/* Many devices have QMI and DIAG functions which are distinguishable
 970 * from other vendor specific functions by class, subclass and
 971 * protocol all being 0xff. The DIAG function has exactly 2 endpoints
 972 * and is silently rejected when probed.
 973 *
 974 * This makes it possible to match dynamically numbered QMI functions
 975 * as seen on e.g. many Quectel modems.
 976 */
 977#define QMI_MATCH_FF_FF_FF(vend, prod) \
 978        USB_DEVICE_AND_INTERFACE_INFO(vend, prod, USB_CLASS_VENDOR_SPEC, \
 979                                      USB_SUBCLASS_VENDOR_SPEC, 0xff), \
 980        .driver_info = (unsigned long)&qmi_wwan_info_quirk_dtr
 981
 982static const struct usb_device_id products[] = {
 983        /* 1. CDC ECM like devices match on the control interface */
 984        {       /* Huawei E392, E398 and possibly others sharing both device id and more... */
 985                USB_VENDOR_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, USB_CLASS_VENDOR_SPEC, 1, 9),
 986                .driver_info        = (unsigned long)&qmi_wwan_info,
 987        },
 988        {       /* Vodafone/Huawei K5005 (12d1:14c8) and similar modems */
 989                USB_VENDOR_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, USB_CLASS_VENDOR_SPEC, 1, 57),
 990                .driver_info        = (unsigned long)&qmi_wwan_info,
 991        },
 992        {       /* HUAWEI_INTERFACE_NDIS_CONTROL_QUALCOMM */
 993                USB_VENDOR_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, USB_CLASS_VENDOR_SPEC, 0x01, 0x69),
 994                .driver_info        = (unsigned long)&qmi_wwan_info,
 995        },
 996        {       /* Motorola Mapphone devices with MDM6600 */
 997                USB_VENDOR_AND_INTERFACE_INFO(0x22b8, USB_CLASS_VENDOR_SPEC, 0xfb, 0xff),
 998                .driver_info        = (unsigned long)&qmi_wwan_info,
 999        },
1000
1001        /* 2. Combined interface devices matching on class+protocol */
1002        {       /* Huawei E367 and possibly others in "Windows mode" */
1003                USB_VENDOR_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, USB_CLASS_VENDOR_SPEC, 1, 7),
1004                .driver_info        = (unsigned long)&qmi_wwan_info,
1005        },
1006        {       /* Huawei E392, E398 and possibly others in "Windows mode" */
1007                USB_VENDOR_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, USB_CLASS_VENDOR_SPEC, 1, 17),
1008                .driver_info        = (unsigned long)&qmi_wwan_info,
1009        },
1010        {       /* HUAWEI_NDIS_SINGLE_INTERFACE_VDF */
1011                USB_VENDOR_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, USB_CLASS_VENDOR_SPEC, 0x01, 0x37),
1012                .driver_info        = (unsigned long)&qmi_wwan_info,
1013        },
1014        {       /* HUAWEI_INTERFACE_NDIS_HW_QUALCOMM */
1015                USB_VENDOR_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, USB_CLASS_VENDOR_SPEC, 0x01, 0x67),
1016                .driver_info        = (unsigned long)&qmi_wwan_info,
1017        },
1018        {       /* Pantech UML290, P4200 and more */
1019                USB_VENDOR_AND_INTERFACE_INFO(0x106c, USB_CLASS_VENDOR_SPEC, 0xf0, 0xff),
1020                .driver_info        = (unsigned long)&qmi_wwan_info,
1021        },
1022        {       /* Pantech UML290 - newer firmware */
1023                USB_VENDOR_AND_INTERFACE_INFO(0x106c, USB_CLASS_VENDOR_SPEC, 0xf1, 0xff),
1024                .driver_info        = (unsigned long)&qmi_wwan_info,
1025        },
1026        {       /* Novatel USB551L and MC551 */
1027                USB_DEVICE_AND_INTERFACE_INFO(0x1410, 0xb001,
1028                                              USB_CLASS_COMM,
1029                                              USB_CDC_SUBCLASS_ETHERNET,
1030                                              USB_CDC_PROTO_NONE),
1031                .driver_info        = (unsigned long)&qmi_wwan_info,
1032        },
1033        {       /* Novatel E362 */
1034                USB_DEVICE_AND_INTERFACE_INFO(0x1410, 0x9010,
1035                                              USB_CLASS_COMM,
1036                                              USB_CDC_SUBCLASS_ETHERNET,
1037                                              USB_CDC_PROTO_NONE),
1038                .driver_info        = (unsigned long)&qmi_wwan_info,
1039        },
1040        {       /* Novatel Expedite E371 */
1041                USB_DEVICE_AND_INTERFACE_INFO(0x1410, 0x9011,
1042                                              USB_CLASS_COMM,
1043                                              USB_CDC_SUBCLASS_ETHERNET,
1044                                              USB_CDC_PROTO_NONE),
1045                .driver_info        = (unsigned long)&qmi_wwan_info,
1046        },
1047        {       /* Dell Wireless 5800 (Novatel E362) */
1048                USB_DEVICE_AND_INTERFACE_INFO(0x413C, 0x8195,
1049                                              USB_CLASS_COMM,
1050                                              USB_CDC_SUBCLASS_ETHERNET,
1051                                              USB_CDC_PROTO_NONE),
1052                .driver_info        = (unsigned long)&qmi_wwan_info,
1053        },
1054        {       /* Dell Wireless 5800 V2 (Novatel E362) */
1055                USB_DEVICE_AND_INTERFACE_INFO(0x413C, 0x8196,
1056                                              USB_CLASS_COMM,
1057                                              USB_CDC_SUBCLASS_ETHERNET,
1058                                              USB_CDC_PROTO_NONE),
1059                .driver_info        = (unsigned long)&qmi_wwan_info,
1060        },
1061        {       /* Dell Wireless 5804 (Novatel E371) */
1062                USB_DEVICE_AND_INTERFACE_INFO(0x413C, 0x819b,
1063                                              USB_CLASS_COMM,
1064                                              USB_CDC_SUBCLASS_ETHERNET,
1065                                              USB_CDC_PROTO_NONE),
1066                .driver_info        = (unsigned long)&qmi_wwan_info,
1067        },
1068        {       /* ADU960S */
1069                USB_DEVICE_AND_INTERFACE_INFO(0x16d5, 0x650a,
1070                                              USB_CLASS_COMM,
1071                                              USB_CDC_SUBCLASS_ETHERNET,
1072                                              USB_CDC_PROTO_NONE),
1073                .driver_info        = (unsigned long)&qmi_wwan_info,
1074        },
1075        {       /* HP lt2523 (Novatel E371) */
1076                USB_DEVICE_AND_INTERFACE_INFO(0x03f0, 0x421d,
1077                                              USB_CLASS_COMM,
1078                                              USB_CDC_SUBCLASS_ETHERNET,
1079                                              USB_CDC_PROTO_NONE),
1080                .driver_info        = (unsigned long)&qmi_wwan_info,
1081        },
1082        {       /* HP lt4112 LTE/HSPA+ Gobi 4G Module (Huawei me906e) */
1083                USB_DEVICE_AND_INTERFACE_INFO(0x03f0, 0x581d, USB_CLASS_VENDOR_SPEC, 1, 7),
1084                .driver_info = (unsigned long)&qmi_wwan_info,
1085        },
1086        {QMI_MATCH_FF_FF_FF(0x2c7c, 0x0125)},   /* Quectel EC25, EC20 R2.0  Mini PCIe */
1087        {QMI_MATCH_FF_FF_FF(0x2c7c, 0x0306)},   /* Quectel EP06/EG06/EM06 */
1088        {QMI_MATCH_FF_FF_FF(0x2c7c, 0x0512)},   /* Quectel EG12/EM12 */
1089        {QMI_MATCH_FF_FF_FF(0x2c7c, 0x0620)},   /* Quectel EM160R-GL */
1090        {QMI_MATCH_FF_FF_FF(0x2c7c, 0x0800)},   /* Quectel RM500Q-GL */
1091
1092        /* 3. Combined interface devices matching on interface number */
1093        {QMI_FIXED_INTF(0x0408, 0xea42, 4)},    /* Yota / Megafon M100-1 */
1094        {QMI_FIXED_INTF(0x05c6, 0x6001, 3)},    /* 4G LTE usb-modem U901 */
1095        {QMI_FIXED_INTF(0x05c6, 0x7000, 0)},
1096        {QMI_FIXED_INTF(0x05c6, 0x7001, 1)},
1097        {QMI_FIXED_INTF(0x05c6, 0x7002, 1)},
1098        {QMI_FIXED_INTF(0x05c6, 0x7101, 1)},
1099        {QMI_FIXED_INTF(0x05c6, 0x7101, 2)},
1100        {QMI_FIXED_INTF(0x05c6, 0x7101, 3)},
1101        {QMI_FIXED_INTF(0x05c6, 0x7102, 1)},
1102        {QMI_FIXED_INTF(0x05c6, 0x7102, 2)},
1103        {QMI_FIXED_INTF(0x05c6, 0x7102, 3)},
1104        {QMI_FIXED_INTF(0x05c6, 0x8000, 7)},
1105        {QMI_FIXED_INTF(0x05c6, 0x8001, 6)},
1106        {QMI_FIXED_INTF(0x05c6, 0x9000, 4)},
1107        {QMI_FIXED_INTF(0x05c6, 0x9003, 4)},
1108        {QMI_FIXED_INTF(0x05c6, 0x9005, 2)},
1109        {QMI_FIXED_INTF(0x05c6, 0x900a, 4)},
1110        {QMI_FIXED_INTF(0x05c6, 0x900b, 2)},
1111        {QMI_FIXED_INTF(0x05c6, 0x900c, 4)},
1112        {QMI_FIXED_INTF(0x05c6, 0x900c, 5)},
1113        {QMI_FIXED_INTF(0x05c6, 0x900c, 6)},
1114        {QMI_FIXED_INTF(0x05c6, 0x900d, 5)},
1115        {QMI_FIXED_INTF(0x05c6, 0x900f, 3)},
1116        {QMI_FIXED_INTF(0x05c6, 0x900f, 4)},
1117        {QMI_FIXED_INTF(0x05c6, 0x900f, 5)},
1118        {QMI_FIXED_INTF(0x05c6, 0x9010, 4)},
1119        {QMI_FIXED_INTF(0x05c6, 0x9010, 5)},
1120        {QMI_FIXED_INTF(0x05c6, 0x9011, 3)},
1121        {QMI_FIXED_INTF(0x05c6, 0x9011, 4)},
1122        {QMI_FIXED_INTF(0x05c6, 0x9021, 1)},
1123        {QMI_FIXED_INTF(0x05c6, 0x9022, 2)},
1124        {QMI_QUIRK_SET_DTR(0x05c6, 0x9025, 4)}, /* Alcatel-sbell ASB TL131 TDD LTE (China Mobile) */
1125        {QMI_FIXED_INTF(0x05c6, 0x9026, 3)},
1126        {QMI_FIXED_INTF(0x05c6, 0x902e, 5)},
1127        {QMI_FIXED_INTF(0x05c6, 0x9031, 5)},
1128        {QMI_FIXED_INTF(0x05c6, 0x9032, 4)},
1129        {QMI_FIXED_INTF(0x05c6, 0x9033, 3)},
1130        {QMI_FIXED_INTF(0x05c6, 0x9033, 4)},
1131        {QMI_FIXED_INTF(0x05c6, 0x9033, 5)},
1132        {QMI_FIXED_INTF(0x05c6, 0x9033, 6)},
1133        {QMI_FIXED_INTF(0x05c6, 0x9034, 3)},
1134        {QMI_FIXED_INTF(0x05c6, 0x9034, 4)},
1135        {QMI_FIXED_INTF(0x05c6, 0x9034, 5)},
1136        {QMI_FIXED_INTF(0x05c6, 0x9034, 6)},
1137        {QMI_FIXED_INTF(0x05c6, 0x9034, 7)},
1138        {QMI_FIXED_INTF(0x05c6, 0x9035, 4)},
1139        {QMI_FIXED_INTF(0x05c6, 0x9036, 3)},
1140        {QMI_FIXED_INTF(0x05c6, 0x9037, 5)},
1141        {QMI_FIXED_INTF(0x05c6, 0x9038, 4)},
1142        {QMI_FIXED_INTF(0x05c6, 0x903b, 7)},
1143        {QMI_FIXED_INTF(0x05c6, 0x903c, 6)},
1144        {QMI_FIXED_INTF(0x05c6, 0x903d, 6)},
1145        {QMI_FIXED_INTF(0x05c6, 0x903e, 5)},
1146        {QMI_FIXED_INTF(0x05c6, 0x9043, 3)},
1147        {QMI_FIXED_INTF(0x05c6, 0x9046, 3)},
1148        {QMI_FIXED_INTF(0x05c6, 0x9046, 4)},
1149        {QMI_FIXED_INTF(0x05c6, 0x9046, 5)},
1150        {QMI_FIXED_INTF(0x05c6, 0x9047, 2)},
1151        {QMI_FIXED_INTF(0x05c6, 0x9047, 3)},
1152        {QMI_FIXED_INTF(0x05c6, 0x9047, 4)},
1153        {QMI_FIXED_INTF(0x05c6, 0x9048, 4)},
1154        {QMI_FIXED_INTF(0x05c6, 0x9048, 5)},
1155        {QMI_FIXED_INTF(0x05c6, 0x9048, 6)},
1156        {QMI_FIXED_INTF(0x05c6, 0x9048, 7)},
1157        {QMI_FIXED_INTF(0x05c6, 0x9048, 8)},
1158        {QMI_FIXED_INTF(0x05c6, 0x904c, 5)},
1159        {QMI_FIXED_INTF(0x05c6, 0x904c, 6)},
1160        {QMI_FIXED_INTF(0x05c6, 0x904c, 7)},
1161        {QMI_FIXED_INTF(0x05c6, 0x904c, 8)},
1162        {QMI_FIXED_INTF(0x05c6, 0x9050, 3)},
1163        {QMI_FIXED_INTF(0x05c6, 0x9052, 4)},
1164        {QMI_FIXED_INTF(0x05c6, 0x9053, 6)},
1165        {QMI_FIXED_INTF(0x05c6, 0x9053, 7)},
1166        {QMI_FIXED_INTF(0x05c6, 0x9054, 5)},
1167        {QMI_FIXED_INTF(0x05c6, 0x9054, 6)},
1168        {QMI_FIXED_INTF(0x05c6, 0x9055, 3)},
1169        {QMI_FIXED_INTF(0x05c6, 0x9055, 4)},
1170        {QMI_FIXED_INTF(0x05c6, 0x9055, 5)},
1171        {QMI_FIXED_INTF(0x05c6, 0x9055, 6)},
1172        {QMI_FIXED_INTF(0x05c6, 0x9055, 7)},
1173        {QMI_FIXED_INTF(0x05c6, 0x9056, 3)},
1174        {QMI_FIXED_INTF(0x05c6, 0x9062, 2)},
1175        {QMI_FIXED_INTF(0x05c6, 0x9062, 3)},
1176        {QMI_FIXED_INTF(0x05c6, 0x9062, 4)},
1177        {QMI_FIXED_INTF(0x05c6, 0x9062, 5)},
1178        {QMI_FIXED_INTF(0x05c6, 0x9062, 6)},
1179        {QMI_FIXED_INTF(0x05c6, 0x9062, 7)},
1180        {QMI_FIXED_INTF(0x05c6, 0x9062, 8)},
1181        {QMI_FIXED_INTF(0x05c6, 0x9062, 9)},
1182        {QMI_FIXED_INTF(0x05c6, 0x9064, 3)},
1183        {QMI_FIXED_INTF(0x05c6, 0x9065, 6)},
1184        {QMI_FIXED_INTF(0x05c6, 0x9065, 7)},
1185        {QMI_FIXED_INTF(0x05c6, 0x9066, 5)},
1186        {QMI_FIXED_INTF(0x05c6, 0x9066, 6)},
1187        {QMI_FIXED_INTF(0x05c6, 0x9067, 1)},
1188        {QMI_FIXED_INTF(0x05c6, 0x9068, 2)},
1189        {QMI_FIXED_INTF(0x05c6, 0x9068, 3)},
1190        {QMI_FIXED_INTF(0x05c6, 0x9068, 4)},
1191        {QMI_FIXED_INTF(0x05c6, 0x9068, 5)},
1192        {QMI_FIXED_INTF(0x05c6, 0x9068, 6)},
1193        {QMI_FIXED_INTF(0x05c6, 0x9068, 7)},
1194        {QMI_FIXED_INTF(0x05c6, 0x9069, 5)},
1195        {QMI_FIXED_INTF(0x05c6, 0x9069, 6)},
1196        {QMI_FIXED_INTF(0x05c6, 0x9069, 7)},
1197        {QMI_FIXED_INTF(0x05c6, 0x9069, 8)},
1198        {QMI_FIXED_INTF(0x05c6, 0x9070, 4)},
1199        {QMI_FIXED_INTF(0x05c6, 0x9070, 5)},
1200        {QMI_FIXED_INTF(0x05c6, 0x9075, 5)},
1201        {QMI_FIXED_INTF(0x05c6, 0x9076, 4)},
1202        {QMI_FIXED_INTF(0x05c6, 0x9076, 5)},
1203        {QMI_FIXED_INTF(0x05c6, 0x9076, 6)},
1204        {QMI_FIXED_INTF(0x05c6, 0x9076, 7)},
1205        {QMI_FIXED_INTF(0x05c6, 0x9076, 8)},
1206        {QMI_FIXED_INTF(0x05c6, 0x9077, 3)},
1207        {QMI_FIXED_INTF(0x05c6, 0x9077, 4)},
1208        {QMI_FIXED_INTF(0x05c6, 0x9077, 5)},
1209        {QMI_FIXED_INTF(0x05c6, 0x9077, 6)},
1210        {QMI_FIXED_INTF(0x05c6, 0x9078, 3)},
1211        {QMI_FIXED_INTF(0x05c6, 0x9079, 4)},
1212        {QMI_FIXED_INTF(0x05c6, 0x9079, 5)},
1213        {QMI_FIXED_INTF(0x05c6, 0x9079, 6)},
1214        {QMI_FIXED_INTF(0x05c6, 0x9079, 7)},
1215        {QMI_FIXED_INTF(0x05c6, 0x9079, 8)},
1216        {QMI_FIXED_INTF(0x05c6, 0x9080, 5)},
1217        {QMI_FIXED_INTF(0x05c6, 0x9080, 6)},
1218        {QMI_FIXED_INTF(0x05c6, 0x9080, 7)},
1219        {QMI_FIXED_INTF(0x05c6, 0x9080, 8)},
1220        {QMI_FIXED_INTF(0x05c6, 0x9083, 3)},
1221        {QMI_FIXED_INTF(0x05c6, 0x9084, 4)},
1222        {QMI_FIXED_INTF(0x05c6, 0x90b2, 3)},    /* ublox R410M */
1223        {QMI_FIXED_INTF(0x05c6, 0x920d, 0)},
1224        {QMI_FIXED_INTF(0x05c6, 0x920d, 5)},
1225        {QMI_QUIRK_SET_DTR(0x05c6, 0x9625, 4)}, /* YUGA CLM920-NC5 */
1226        {QMI_FIXED_INTF(0x0846, 0x68a2, 8)},
1227        {QMI_FIXED_INTF(0x0846, 0x68d3, 8)},    /* Netgear Aircard 779S */
1228        {QMI_FIXED_INTF(0x12d1, 0x140c, 1)},    /* Huawei E173 */
1229        {QMI_FIXED_INTF(0x12d1, 0x14ac, 1)},    /* Huawei E1820 */
1230        {QMI_FIXED_INTF(0x1435, 0x0918, 3)},    /* Wistron NeWeb D16Q1 */
1231        {QMI_FIXED_INTF(0x1435, 0x0918, 4)},    /* Wistron NeWeb D16Q1 */
1232        {QMI_FIXED_INTF(0x1435, 0x0918, 5)},    /* Wistron NeWeb D16Q1 */
1233        {QMI_FIXED_INTF(0x1435, 0x3185, 4)},    /* Wistron NeWeb M18Q5 */
1234        {QMI_FIXED_INTF(0x1435, 0xd111, 4)},    /* M9615A DM11-1 D51QC */
1235        {QMI_FIXED_INTF(0x1435, 0xd181, 3)},    /* Wistron NeWeb D18Q1 */
1236        {QMI_FIXED_INTF(0x1435, 0xd181, 4)},    /* Wistron NeWeb D18Q1 */
1237        {QMI_FIXED_INTF(0x1435, 0xd181, 5)},    /* Wistron NeWeb D18Q1 */
1238        {QMI_FIXED_INTF(0x1435, 0xd182, 4)},    /* Wistron NeWeb D18 */
1239        {QMI_FIXED_INTF(0x1435, 0xd182, 5)},    /* Wistron NeWeb D18 */
1240        {QMI_FIXED_INTF(0x1435, 0xd191, 4)},    /* Wistron NeWeb D19Q1 */
1241        {QMI_QUIRK_SET_DTR(0x1508, 0x1001, 4)}, /* Fibocom NL668 series */
1242        {QMI_FIXED_INTF(0x1690, 0x7588, 4)},    /* ASKEY WWHC050 */
1243        {QMI_FIXED_INTF(0x16d8, 0x6003, 0)},    /* CMOTech 6003 */
1244        {QMI_FIXED_INTF(0x16d8, 0x6007, 0)},    /* CMOTech CHE-628S */
1245        {QMI_FIXED_INTF(0x16d8, 0x6008, 0)},    /* CMOTech CMU-301 */
1246        {QMI_FIXED_INTF(0x16d8, 0x6280, 0)},    /* CMOTech CHU-628 */
1247        {QMI_FIXED_INTF(0x16d8, 0x7001, 0)},    /* CMOTech CHU-720S */
1248        {QMI_FIXED_INTF(0x16d8, 0x7002, 0)},    /* CMOTech 7002 */
1249        {QMI_FIXED_INTF(0x16d8, 0x7003, 4)},    /* CMOTech CHU-629K */
1250        {QMI_FIXED_INTF(0x16d8, 0x7004, 3)},    /* CMOTech 7004 */
1251        {QMI_FIXED_INTF(0x16d8, 0x7006, 5)},    /* CMOTech CGU-629 */
1252        {QMI_FIXED_INTF(0x16d8, 0x700a, 4)},    /* CMOTech CHU-629S */
1253        {QMI_FIXED_INTF(0x16d8, 0x7211, 0)},    /* CMOTech CHU-720I */
1254        {QMI_FIXED_INTF(0x16d8, 0x7212, 0)},    /* CMOTech 7212 */
1255        {QMI_FIXED_INTF(0x16d8, 0x7213, 0)},    /* CMOTech 7213 */
1256        {QMI_FIXED_INTF(0x16d8, 0x7251, 1)},    /* CMOTech 7251 */
1257        {QMI_FIXED_INTF(0x16d8, 0x7252, 1)},    /* CMOTech 7252 */
1258        {QMI_FIXED_INTF(0x16d8, 0x7253, 1)},    /* CMOTech 7253 */
1259        {QMI_FIXED_INTF(0x19d2, 0x0002, 1)},
1260        {QMI_FIXED_INTF(0x19d2, 0x0012, 1)},
1261        {QMI_FIXED_INTF(0x19d2, 0x0017, 3)},
1262        {QMI_FIXED_INTF(0x19d2, 0x0019, 3)},    /* ONDA MT689DC */
1263        {QMI_FIXED_INTF(0x19d2, 0x0021, 4)},
1264        {QMI_FIXED_INTF(0x19d2, 0x0025, 1)},
1265        {QMI_FIXED_INTF(0x19d2, 0x0031, 4)},
1266        {QMI_FIXED_INTF(0x19d2, 0x0042, 4)},
1267        {QMI_FIXED_INTF(0x19d2, 0x0049, 5)},
1268        {QMI_FIXED_INTF(0x19d2, 0x0052, 4)},
1269        {QMI_FIXED_INTF(0x19d2, 0x0055, 1)},    /* ZTE (Vodafone) K3520-Z */
1270        {QMI_FIXED_INTF(0x19d2, 0x0058, 4)},
1271        {QMI_FIXED_INTF(0x19d2, 0x0063, 4)},    /* ZTE (Vodafone) K3565-Z */
1272        {QMI_FIXED_INTF(0x19d2, 0x0104, 4)},    /* ZTE (Vodafone) K4505-Z */
1273        {QMI_FIXED_INTF(0x19d2, 0x0113, 5)},
1274        {QMI_FIXED_INTF(0x19d2, 0x0118, 5)},
1275        {QMI_FIXED_INTF(0x19d2, 0x0121, 5)},
1276        {QMI_FIXED_INTF(0x19d2, 0x0123, 4)},
1277        {QMI_FIXED_INTF(0x19d2, 0x0124, 5)},
1278        {QMI_FIXED_INTF(0x19d2, 0x0125, 6)},
1279        {QMI_FIXED_INTF(0x19d2, 0x0126, 5)},
1280        {QMI_FIXED_INTF(0x19d2, 0x0130, 1)},
1281        {QMI_FIXED_INTF(0x19d2, 0x0133, 3)},
1282        {QMI_FIXED_INTF(0x19d2, 0x0141, 5)},
1283        {QMI_FIXED_INTF(0x19d2, 0x0157, 5)},    /* ZTE MF683 */
1284        {QMI_FIXED_INTF(0x19d2, 0x0158, 3)},
1285        {QMI_FIXED_INTF(0x19d2, 0x0167, 4)},    /* ZTE MF820D */
1286        {QMI_FIXED_INTF(0x19d2, 0x0168, 4)},
1287        {QMI_FIXED_INTF(0x19d2, 0x0176, 3)},
1288        {QMI_FIXED_INTF(0x19d2, 0x0178, 3)},
1289        {QMI_FIXED_INTF(0x19d2, 0x0191, 4)},    /* ZTE EuFi890 */
1290        {QMI_FIXED_INTF(0x19d2, 0x0199, 1)},    /* ZTE MF820S */
1291        {QMI_FIXED_INTF(0x19d2, 0x0200, 1)},
1292        {QMI_FIXED_INTF(0x19d2, 0x0257, 3)},    /* ZTE MF821 */
1293        {QMI_FIXED_INTF(0x19d2, 0x0265, 4)},    /* ONDA MT8205 4G LTE */
1294        {QMI_FIXED_INTF(0x19d2, 0x0284, 4)},    /* ZTE MF880 */
1295        {QMI_FIXED_INTF(0x19d2, 0x0326, 4)},    /* ZTE MF821D */
1296        {QMI_FIXED_INTF(0x19d2, 0x0396, 3)},    /* ZTE ZM8620 */
1297        {QMI_FIXED_INTF(0x19d2, 0x0412, 4)},    /* Telewell TW-LTE 4G */
1298        {QMI_FIXED_INTF(0x19d2, 0x1008, 4)},    /* ZTE (Vodafone) K3570-Z */
1299        {QMI_FIXED_INTF(0x19d2, 0x1010, 4)},    /* ZTE (Vodafone) K3571-Z */
1300        {QMI_FIXED_INTF(0x19d2, 0x1012, 4)},
1301        {QMI_FIXED_INTF(0x19d2, 0x1018, 3)},    /* ZTE (Vodafone) K5006-Z */
1302        {QMI_FIXED_INTF(0x19d2, 0x1021, 2)},
1303        {QMI_FIXED_INTF(0x19d2, 0x1245, 4)},
1304        {QMI_FIXED_INTF(0x19d2, 0x1247, 4)},
1305        {QMI_FIXED_INTF(0x19d2, 0x1252, 4)},
1306        {QMI_FIXED_INTF(0x19d2, 0x1254, 4)},
1307        {QMI_FIXED_INTF(0x19d2, 0x1255, 3)},
1308        {QMI_FIXED_INTF(0x19d2, 0x1255, 4)},
1309        {QMI_FIXED_INTF(0x19d2, 0x1256, 4)},
1310        {QMI_FIXED_INTF(0x19d2, 0x1270, 5)},    /* ZTE MF667 */
1311        {QMI_FIXED_INTF(0x19d2, 0x1275, 3)},    /* ZTE P685M */
1312        {QMI_FIXED_INTF(0x19d2, 0x1401, 2)},
1313        {QMI_FIXED_INTF(0x19d2, 0x1402, 2)},    /* ZTE MF60 */
1314        {QMI_FIXED_INTF(0x19d2, 0x1424, 2)},
1315        {QMI_FIXED_INTF(0x19d2, 0x1425, 2)},
1316        {QMI_FIXED_INTF(0x19d2, 0x1426, 2)},    /* ZTE MF91 */
1317        {QMI_FIXED_INTF(0x19d2, 0x1428, 2)},    /* Telewell TW-LTE 4G v2 */
1318        {QMI_FIXED_INTF(0x19d2, 0x1432, 3)},    /* ZTE ME3620 */
1319        {QMI_FIXED_INTF(0x19d2, 0x2002, 4)},    /* ZTE (Vodafone) K3765-Z */
1320        {QMI_FIXED_INTF(0x2001, 0x7e16, 3)},    /* D-Link DWM-221 */
1321        {QMI_FIXED_INTF(0x2001, 0x7e19, 4)},    /* D-Link DWM-221 B1 */
1322        {QMI_FIXED_INTF(0x2001, 0x7e35, 4)},    /* D-Link DWM-222 */
1323        {QMI_FIXED_INTF(0x2001, 0x7e3d, 4)},    /* D-Link DWM-222 A2 */
1324        {QMI_FIXED_INTF(0x2020, 0x2031, 4)},    /* Olicard 600 */
1325        {QMI_FIXED_INTF(0x2020, 0x2033, 4)},    /* BroadMobi BM806U */
1326        {QMI_FIXED_INTF(0x2020, 0x2060, 4)},    /* BroadMobi BM818 */
1327        {QMI_FIXED_INTF(0x0f3d, 0x68a2, 8)},    /* Sierra Wireless MC7700 */
1328        {QMI_FIXED_INTF(0x114f, 0x68a2, 8)},    /* Sierra Wireless MC7750 */
1329        {QMI_FIXED_INTF(0x1199, 0x68a2, 8)},    /* Sierra Wireless MC7710 in QMI mode */
1330        {QMI_FIXED_INTF(0x1199, 0x68a2, 19)},   /* Sierra Wireless MC7710 in QMI mode */
1331        {QMI_QUIRK_SET_DTR(0x1199, 0x68c0, 8)}, /* Sierra Wireless MC7304/MC7354, WP76xx */
1332        {QMI_QUIRK_SET_DTR(0x1199, 0x68c0, 10)},/* Sierra Wireless MC7304/MC7354 */
1333        {QMI_FIXED_INTF(0x1199, 0x901c, 8)},    /* Sierra Wireless EM7700 */
1334        {QMI_FIXED_INTF(0x1199, 0x901f, 8)},    /* Sierra Wireless EM7355 */
1335        {QMI_FIXED_INTF(0x1199, 0x9041, 8)},    /* Sierra Wireless MC7305/MC7355 */
1336        {QMI_FIXED_INTF(0x1199, 0x9041, 10)},   /* Sierra Wireless MC7305/MC7355 */
1337        {QMI_FIXED_INTF(0x1199, 0x9051, 8)},    /* Netgear AirCard 340U */
1338        {QMI_FIXED_INTF(0x1199, 0x9053, 8)},    /* Sierra Wireless Modem */
1339        {QMI_FIXED_INTF(0x1199, 0x9054, 8)},    /* Sierra Wireless Modem */
1340        {QMI_FIXED_INTF(0x1199, 0x9055, 8)},    /* Netgear AirCard 341U */
1341        {QMI_FIXED_INTF(0x1199, 0x9056, 8)},    /* Sierra Wireless Modem */
1342        {QMI_FIXED_INTF(0x1199, 0x9057, 8)},
1343        {QMI_FIXED_INTF(0x1199, 0x9061, 8)},    /* Sierra Wireless Modem */
1344        {QMI_FIXED_INTF(0x1199, 0x9063, 8)},    /* Sierra Wireless EM7305 */
1345        {QMI_FIXED_INTF(0x1199, 0x9063, 10)},   /* Sierra Wireless EM7305 */
1346        {QMI_QUIRK_SET_DTR(0x1199, 0x9071, 8)}, /* Sierra Wireless MC74xx */
1347        {QMI_QUIRK_SET_DTR(0x1199, 0x9071, 10)},/* Sierra Wireless MC74xx */
1348        {QMI_QUIRK_SET_DTR(0x1199, 0x9079, 8)}, /* Sierra Wireless EM74xx */
1349        {QMI_QUIRK_SET_DTR(0x1199, 0x9079, 10)},/* Sierra Wireless EM74xx */
1350        {QMI_QUIRK_SET_DTR(0x1199, 0x907b, 8)}, /* Sierra Wireless EM74xx */
1351        {QMI_QUIRK_SET_DTR(0x1199, 0x907b, 10)},/* Sierra Wireless EM74xx */
1352        {QMI_QUIRK_SET_DTR(0x1199, 0x9091, 8)}, /* Sierra Wireless EM7565 */
1353        {QMI_FIXED_INTF(0x1bbb, 0x011e, 4)},    /* Telekom Speedstick LTE II (Alcatel One Touch L100V LTE) */
1354        {QMI_FIXED_INTF(0x1bbb, 0x0203, 2)},    /* Alcatel L800MA */
1355        {QMI_FIXED_INTF(0x2357, 0x0201, 4)},    /* TP-LINK HSUPA Modem MA180 */
1356        {QMI_FIXED_INTF(0x2357, 0x9000, 4)},    /* TP-LINK MA260 */
1357        {QMI_QUIRK_SET_DTR(0x1bc7, 0x1031, 3)}, /* Telit LE910C1-EUX */
1358        {QMI_QUIRK_SET_DTR(0x1bc7, 0x1040, 2)}, /* Telit LE922A */
1359        {QMI_QUIRK_SET_DTR(0x1bc7, 0x1050, 2)}, /* Telit FN980 */
1360        {QMI_QUIRK_SET_DTR(0x1bc7, 0x1060, 2)}, /* Telit LN920 */
1361        {QMI_QUIRK_SET_DTR(0x1bc7, 0x1070, 2)}, /* Telit FN990 */
1362        {QMI_FIXED_INTF(0x1bc7, 0x1100, 3)},    /* Telit ME910 */
1363        {QMI_FIXED_INTF(0x1bc7, 0x1101, 3)},    /* Telit ME910 dual modem */
1364        {QMI_FIXED_INTF(0x1bc7, 0x1200, 5)},    /* Telit LE920 */
1365        {QMI_QUIRK_SET_DTR(0x1bc7, 0x1201, 2)}, /* Telit LE920, LE920A4 */
1366        {QMI_QUIRK_SET_DTR(0x1bc7, 0x1230, 2)}, /* Telit LE910Cx */
1367        {QMI_QUIRK_SET_DTR(0x1bc7, 0x1260, 2)}, /* Telit LE910Cx */
1368        {QMI_QUIRK_SET_DTR(0x1bc7, 0x1261, 2)}, /* Telit LE910Cx */
1369        {QMI_QUIRK_SET_DTR(0x1bc7, 0x1900, 1)}, /* Telit LN940 series */
1370        {QMI_FIXED_INTF(0x1c9e, 0x9801, 3)},    /* Telewell TW-3G HSPA+ */
1371        {QMI_FIXED_INTF(0x1c9e, 0x9803, 4)},    /* Telewell TW-3G HSPA+ */
1372        {QMI_FIXED_INTF(0x1c9e, 0x9b01, 3)},    /* XS Stick W100-2 from 4G Systems */
1373        {QMI_FIXED_INTF(0x0b3c, 0xc000, 4)},    /* Olivetti Olicard 100 */
1374        {QMI_FIXED_INTF(0x0b3c, 0xc001, 4)},    /* Olivetti Olicard 120 */
1375        {QMI_FIXED_INTF(0x0b3c, 0xc002, 4)},    /* Olivetti Olicard 140 */
1376        {QMI_FIXED_INTF(0x0b3c, 0xc004, 6)},    /* Olivetti Olicard 155 */
1377        {QMI_FIXED_INTF(0x0b3c, 0xc005, 6)},    /* Olivetti Olicard 200 */
1378        {QMI_FIXED_INTF(0x0b3c, 0xc00a, 6)},    /* Olivetti Olicard 160 */
1379        {QMI_FIXED_INTF(0x0b3c, 0xc00b, 4)},    /* Olivetti Olicard 500 */
1380        {QMI_FIXED_INTF(0x1e2d, 0x0060, 4)},    /* Cinterion PLxx */
1381        {QMI_QUIRK_SET_DTR(0x1e2d, 0x006f, 8)}, /* Cinterion PLS83/PLS63 */
1382        {QMI_FIXED_INTF(0x1e2d, 0x0053, 4)},    /* Cinterion PHxx,PXxx */
1383        {QMI_FIXED_INTF(0x1e2d, 0x0063, 10)},   /* Cinterion ALASxx (1 RmNet) */
1384        {QMI_FIXED_INTF(0x1e2d, 0x0082, 4)},    /* Cinterion PHxx,PXxx (2 RmNet) */
1385        {QMI_FIXED_INTF(0x1e2d, 0x0082, 5)},    /* Cinterion PHxx,PXxx (2 RmNet) */
1386        {QMI_FIXED_INTF(0x1e2d, 0x0083, 4)},    /* Cinterion PHxx,PXxx (1 RmNet + USB Audio)*/
1387        {QMI_QUIRK_SET_DTR(0x1e2d, 0x00b0, 4)}, /* Cinterion CLS8 */
1388        {QMI_FIXED_INTF(0x1e2d, 0x00b7, 0)},    /* Cinterion MV31 RmNet */
1389        {QMI_FIXED_INTF(0x413c, 0x81a2, 8)},    /* Dell Wireless 5806 Gobi(TM) 4G LTE Mobile Broadband Card */
1390        {QMI_FIXED_INTF(0x413c, 0x81a3, 8)},    /* Dell Wireless 5570 HSPA+ (42Mbps) Mobile Broadband Card */
1391        {QMI_FIXED_INTF(0x413c, 0x81a4, 8)},    /* Dell Wireless 5570e HSPA+ (42Mbps) Mobile Broadband Card */
1392        {QMI_FIXED_INTF(0x413c, 0x81a8, 8)},    /* Dell Wireless 5808 Gobi(TM) 4G LTE Mobile Broadband Card */
1393        {QMI_FIXED_INTF(0x413c, 0x81a9, 8)},    /* Dell Wireless 5808e Gobi(TM) 4G LTE Mobile Broadband Card */
1394        {QMI_FIXED_INTF(0x413c, 0x81b1, 8)},    /* Dell Wireless 5809e Gobi(TM) 4G LTE Mobile Broadband Card */
1395        {QMI_FIXED_INTF(0x413c, 0x81b3, 8)},    /* Dell Wireless 5809e Gobi(TM) 4G LTE Mobile Broadband Card (rev3) */
1396        {QMI_FIXED_INTF(0x413c, 0x81b6, 8)},    /* Dell Wireless 5811e */
1397        {QMI_FIXED_INTF(0x413c, 0x81b6, 10)},   /* Dell Wireless 5811e */
1398        {QMI_FIXED_INTF(0x413c, 0x81cc, 8)},    /* Dell Wireless 5816e */
1399        {QMI_FIXED_INTF(0x413c, 0x81d7, 0)},    /* Dell Wireless 5821e */
1400        {QMI_FIXED_INTF(0x413c, 0x81d7, 1)},    /* Dell Wireless 5821e preproduction config */
1401        {QMI_FIXED_INTF(0x413c, 0x81e0, 0)},    /* Dell Wireless 5821e with eSIM support*/
1402        {QMI_FIXED_INTF(0x03f0, 0x4e1d, 8)},    /* HP lt4111 LTE/EV-DO/HSPA+ Gobi 4G Module */
1403        {QMI_FIXED_INTF(0x03f0, 0x9d1d, 1)},    /* HP lt4120 Snapdragon X5 LTE */
1404        {QMI_FIXED_INTF(0x22de, 0x9061, 3)},    /* WeTelecom WPD-600N */
1405        {QMI_QUIRK_SET_DTR(0x1e0e, 0x9001, 5)}, /* SIMCom 7100E, 7230E, 7600E ++ */
1406        {QMI_QUIRK_SET_DTR(0x2c7c, 0x0121, 4)}, /* Quectel EC21 Mini PCIe */
1407        {QMI_QUIRK_SET_DTR(0x2c7c, 0x0191, 4)}, /* Quectel EG91 */
1408        {QMI_QUIRK_SET_DTR(0x2c7c, 0x0195, 4)}, /* Quectel EG95 */
1409        {QMI_FIXED_INTF(0x2c7c, 0x0296, 4)},    /* Quectel BG96 */
1410        {QMI_QUIRK_SET_DTR(0x2cb7, 0x0104, 4)}, /* Fibocom NL678 series */
1411        {QMI_FIXED_INTF(0x0489, 0xe0b4, 0)},    /* Foxconn T77W968 LTE */
1412        {QMI_FIXED_INTF(0x0489, 0xe0b5, 0)},    /* Foxconn T77W968 LTE with eSIM support*/
1413        {QMI_FIXED_INTF(0x2692, 0x9025, 4)},    /* Cellient MPL200 (rebranded Qualcomm 05c6:9025) */
1414
1415        /* 4. Gobi 1000 devices */
1416        {QMI_GOBI1K_DEVICE(0x05c6, 0x9212)},    /* Acer Gobi Modem Device */
1417        {QMI_GOBI1K_DEVICE(0x03f0, 0x1f1d)},    /* HP un2400 Gobi Modem Device */
1418        {QMI_GOBI1K_DEVICE(0x04da, 0x250d)},    /* Panasonic Gobi Modem device */
1419        {QMI_GOBI1K_DEVICE(0x413c, 0x8172)},    /* Dell Gobi Modem device */
1420        {QMI_GOBI1K_DEVICE(0x1410, 0xa001)},    /* Novatel/Verizon USB-1000 */
1421        {QMI_GOBI1K_DEVICE(0x1410, 0xa002)},    /* Novatel Gobi Modem device */
1422        {QMI_GOBI1K_DEVICE(0x1410, 0xa003)},    /* Novatel Gobi Modem device */
1423        {QMI_GOBI1K_DEVICE(0x1410, 0xa004)},    /* Novatel Gobi Modem device */
1424        {QMI_GOBI1K_DEVICE(0x1410, 0xa005)},    /* Novatel Gobi Modem device */
1425        {QMI_GOBI1K_DEVICE(0x1410, 0xa006)},    /* Novatel Gobi Modem device */
1426        {QMI_GOBI1K_DEVICE(0x1410, 0xa007)},    /* Novatel Gobi Modem device */
1427        {QMI_GOBI1K_DEVICE(0x0b05, 0x1776)},    /* Asus Gobi Modem device */
1428        {QMI_GOBI1K_DEVICE(0x19d2, 0xfff3)},    /* ONDA Gobi Modem device */
1429        {QMI_GOBI1K_DEVICE(0x05c6, 0x9001)},    /* Generic Gobi Modem device */
1430        {QMI_GOBI1K_DEVICE(0x05c6, 0x9002)},    /* Generic Gobi Modem device */
1431        {QMI_GOBI1K_DEVICE(0x05c6, 0x9202)},    /* Generic Gobi Modem device */
1432        {QMI_GOBI1K_DEVICE(0x05c6, 0x9203)},    /* Generic Gobi Modem device */
1433        {QMI_GOBI1K_DEVICE(0x05c6, 0x9222)},    /* Generic Gobi Modem device */
1434        {QMI_GOBI1K_DEVICE(0x05c6, 0x9009)},    /* Generic Gobi Modem device */
1435
1436        /* 5. Gobi 2000 and 3000 devices */
1437        {QMI_GOBI_DEVICE(0x413c, 0x8186)},      /* Dell Gobi 2000 Modem device (N0218, VU936) */
1438        {QMI_GOBI_DEVICE(0x413c, 0x8194)},      /* Dell Gobi 3000 Composite */
1439        {QMI_GOBI_DEVICE(0x05c6, 0x920b)},      /* Generic Gobi 2000 Modem device */
1440        {QMI_GOBI_DEVICE(0x05c6, 0x9225)},      /* Sony Gobi 2000 Modem device (N0279, VU730) */
1441        {QMI_GOBI_DEVICE(0x05c6, 0x9245)},      /* Samsung Gobi 2000 Modem device (VL176) */
1442        {QMI_GOBI_DEVICE(0x03f0, 0x251d)},      /* HP Gobi 2000 Modem device (VP412) */
1443        {QMI_GOBI_DEVICE(0x05c6, 0x9215)},      /* Acer Gobi 2000 Modem device (VP413) */
1444        {QMI_FIXED_INTF(0x05c6, 0x9215, 4)},    /* Quectel EC20 Mini PCIe */
1445        {QMI_GOBI_DEVICE(0x05c6, 0x9265)},      /* Asus Gobi 2000 Modem device (VR305) */
1446        {QMI_GOBI_DEVICE(0x05c6, 0x9235)},      /* Top Global Gobi 2000 Modem device (VR306) */
1447        {QMI_GOBI_DEVICE(0x05c6, 0x9275)},      /* iRex Technologies Gobi 2000 Modem device (VR307) */
1448        {QMI_GOBI_DEVICE(0x0af0, 0x8120)},      /* Option GTM681W */
1449        {QMI_GOBI_DEVICE(0x1199, 0x68a5)},      /* Sierra Wireless Modem */
1450        {QMI_GOBI_DEVICE(0x1199, 0x68a9)},      /* Sierra Wireless Modem */
1451        {QMI_GOBI_DEVICE(0x1199, 0x9001)},      /* Sierra Wireless Gobi 2000 Modem device (VT773) */
1452        {QMI_GOBI_DEVICE(0x1199, 0x9002)},      /* Sierra Wireless Gobi 2000 Modem device (VT773) */
1453        {QMI_GOBI_DEVICE(0x1199, 0x9003)},      /* Sierra Wireless Gobi 2000 Modem device (VT773) */
1454        {QMI_GOBI_DEVICE(0x1199, 0x9004)},      /* Sierra Wireless Gobi 2000 Modem device (VT773) */
1455        {QMI_GOBI_DEVICE(0x1199, 0x9005)},      /* Sierra Wireless Gobi 2000 Modem device (VT773) */
1456        {QMI_GOBI_DEVICE(0x1199, 0x9006)},      /* Sierra Wireless Gobi 2000 Modem device (VT773) */
1457        {QMI_GOBI_DEVICE(0x1199, 0x9007)},      /* Sierra Wireless Gobi 2000 Modem device (VT773) */
1458        {QMI_GOBI_DEVICE(0x1199, 0x9008)},      /* Sierra Wireless Gobi 2000 Modem device (VT773) */
1459        {QMI_GOBI_DEVICE(0x1199, 0x9009)},      /* Sierra Wireless Gobi 2000 Modem device (VT773) */
1460        {QMI_GOBI_DEVICE(0x1199, 0x900a)},      /* Sierra Wireless Gobi 2000 Modem device (VT773) */
1461        {QMI_GOBI_DEVICE(0x1199, 0x9011)},      /* Sierra Wireless Gobi 2000 Modem device (MC8305) */
1462        {QMI_GOBI_DEVICE(0x16d8, 0x8002)},      /* CMDTech Gobi 2000 Modem device (VU922) */
1463        {QMI_GOBI_DEVICE(0x05c6, 0x9205)},      /* Gobi 2000 Modem device */
1464        {QMI_GOBI_DEVICE(0x1199, 0x9013)},      /* Sierra Wireless Gobi 3000 Modem device (MC8355) */
1465        {QMI_GOBI_DEVICE(0x03f0, 0x371d)},      /* HP un2430 Mobile Broadband Module */
1466        {QMI_GOBI_DEVICE(0x1199, 0x9015)},      /* Sierra Wireless Gobi 3000 Modem device */
1467        {QMI_GOBI_DEVICE(0x1199, 0x9019)},      /* Sierra Wireless Gobi 3000 Modem device */
1468        {QMI_GOBI_DEVICE(0x1199, 0x901b)},      /* Sierra Wireless MC7770 */
1469        {QMI_GOBI_DEVICE(0x12d1, 0x14f1)},      /* Sony Gobi 3000 Composite */
1470        {QMI_GOBI_DEVICE(0x1410, 0xa021)},      /* Foxconn Gobi 3000 Modem device (Novatel E396) */
1471
1472        { }                                     /* END */
1473};
1474MODULE_DEVICE_TABLE(usb, products);
1475
1476static bool quectel_ec20_detected(struct usb_interface *intf)
1477{
1478        struct usb_device *dev = interface_to_usbdev(intf);
1479
1480        if (dev->actconfig &&
1481            le16_to_cpu(dev->descriptor.idVendor) == 0x05c6 &&
1482            le16_to_cpu(dev->descriptor.idProduct) == 0x9215 &&
1483            dev->actconfig->desc.bNumInterfaces == 5)
1484                return true;
1485
1486        return false;
1487}
1488
1489static int qmi_wwan_probe(struct usb_interface *intf,
1490                          const struct usb_device_id *prod)
1491{
1492        struct usb_device_id *id = (struct usb_device_id *)prod;
1493        struct usb_interface_descriptor *desc = &intf->cur_altsetting->desc;
1494
1495        /* Workaround to enable dynamic IDs.  This disables usbnet
1496         * blacklisting functionality.  Which, if required, can be
1497         * reimplemented here by using a magic "blacklist" value
1498         * instead of 0 in the static device id table
1499         */
1500        if (!id->driver_info) {
1501                dev_dbg(&intf->dev, "setting defaults for dynamic device id\n");
1502                id->driver_info = (unsigned long)&qmi_wwan_info;
1503        }
1504
1505        /* There are devices where the same interface number can be
1506         * configured as different functions. We should only bind to
1507         * vendor specific functions when matching on interface number
1508         */
1509        if (id->match_flags & USB_DEVICE_ID_MATCH_INT_NUMBER &&
1510            desc->bInterfaceClass != USB_CLASS_VENDOR_SPEC) {
1511                dev_dbg(&intf->dev,
1512                        "Rejecting interface number match for class %02x\n",
1513                        desc->bInterfaceClass);
1514                return -ENODEV;
1515        }
1516
1517        /* Quectel EC20 quirk where we've QMI on interface 4 instead of 0 */
1518        if (quectel_ec20_detected(intf) && desc->bInterfaceNumber == 0) {
1519                dev_dbg(&intf->dev, "Quectel EC20 quirk, skipping interface 0\n");
1520                return -ENODEV;
1521        }
1522
1523        /* Several Quectel modems supports dynamic interface configuration, so
1524         * we need to match on class/subclass/protocol. These values are
1525         * identical for the diagnostic- and QMI-interface, but bNumEndpoints is
1526         * different. Ignore the current interface if the number of endpoints
1527         * equals the number for the diag interface (two).
1528         */
1529        if (desc->bNumEndpoints == 2)
1530                return -ENODEV;
1531
1532        return usbnet_probe(intf, id);
1533}
1534
1535static void qmi_wwan_disconnect(struct usb_interface *intf)
1536{
1537        struct usbnet *dev = usb_get_intfdata(intf);
1538        struct qmi_wwan_state *info;
1539        struct list_head *iter;
1540        struct net_device *ldev;
1541        LIST_HEAD(list);
1542
1543        /* called twice if separate control and data intf */
1544        if (!dev)
1545                return;
1546        info = (void *)&dev->data;
1547        if (info->flags & QMI_WWAN_FLAG_MUX) {
1548                if (!rtnl_trylock()) {
1549                        restart_syscall();
1550                        return;
1551                }
1552                rcu_read_lock();
1553                netdev_for_each_upper_dev_rcu(dev->net, ldev, iter)
1554                        qmimux_unregister_device(ldev, &list);
1555                rcu_read_unlock();
1556                unregister_netdevice_many(&list);
1557                rtnl_unlock();
1558                info->flags &= ~QMI_WWAN_FLAG_MUX;
1559        }
1560        usbnet_disconnect(intf);
1561}
1562
1563static struct usb_driver qmi_wwan_driver = {
1564        .name                 = "qmi_wwan",
1565        .id_table             = products,
1566        .probe                = qmi_wwan_probe,
1567        .disconnect           = qmi_wwan_disconnect,
1568        .suspend              = qmi_wwan_suspend,
1569        .resume               = qmi_wwan_resume,
1570        .reset_resume         = qmi_wwan_resume,
1571        .supports_autosuspend = 1,
1572        .disable_hub_initiated_lpm = 1,
1573};
1574
1575module_usb_driver(qmi_wwan_driver);
1576
1577MODULE_AUTHOR("Bjørn Mork <bjorn@mork.no>");
1578MODULE_DESCRIPTION("Qualcomm MSM Interface (QMI) WWAN driver");
1579MODULE_LICENSE("GPL");
1580