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/kstrtox.h>
  17#include <linux/mii.h>
  18#include <linux/rtnetlink.h>
  19#include <linux/usb.h>
  20#include <linux/usb/cdc.h>
  21#include <linux/usb/usbnet.h>
  22#include <linux/usb/cdc-wdm.h>
  23#include <linux/u64_stats_sync.h>
  24
  25/* This driver supports wwan (3G/LTE/?) devices using a vendor
  26 * specific management protocol called Qualcomm MSM Interface (QMI) -
  27 * in addition to the more common AT commands over serial interface
  28 * management
  29 *
  30 * QMI is wrapped in CDC, using CDC encapsulated commands on the
  31 * control ("master") interface of a two-interface CDC Union
  32 * resembling standard CDC ECM.  The devices do not use the control
  33 * interface for any other CDC messages.  Most likely because the
  34 * management protocol is used in place of the standard CDC
  35 * notifications NOTIFY_NETWORK_CONNECTION and NOTIFY_SPEED_CHANGE
  36 *
  37 * Alternatively, control and data functions can be combined in a
  38 * single USB interface.
  39 *
  40 * Handling a protocol like QMI is out of the scope for any driver.
  41 * It is exported as a character device using the cdc-wdm driver as
  42 * a subdriver, enabling userspace applications ("modem managers") to
  43 * handle it.
  44 *
  45 * These devices may alternatively/additionally be configured using AT
  46 * commands on a serial interface
  47 */
  48
  49/* driver specific data */
  50struct qmi_wwan_state {
  51	struct usb_driver *subdriver;
  52	atomic_t pmcount;
  53	unsigned long flags;
  54	struct usb_interface *control;
  55	struct usb_interface *data;
  56};
  57
  58enum qmi_wwan_flags {
  59	QMI_WWAN_FLAG_RAWIP = 1 << 0,
  60	QMI_WWAN_FLAG_MUX = 1 << 1,
  61	QMI_WWAN_FLAG_PASS_THROUGH = 1 << 2,
  62};
  63
  64enum qmi_wwan_quirks {
  65	QMI_WWAN_QUIRK_DTR = 1 << 0,	/* needs "set DTR" request */
  66};
  67
  68struct qmimux_hdr {
  69	u8 pad;
  70	u8 mux_id;
  71	__be16 pkt_len;
  72};
  73
  74struct qmimux_priv {
  75	struct net_device *real_dev;
  76	u8 mux_id;
  77};
  78
  79static int qmimux_open(struct net_device *dev)
  80{
  81	struct qmimux_priv *priv = netdev_priv(dev);
  82	struct net_device *real_dev = priv->real_dev;
  83
  84	if (!(priv->real_dev->flags & IFF_UP))
  85		return -ENETDOWN;
  86
  87	if (netif_carrier_ok(real_dev))
  88		netif_carrier_on(dev);
  89	return 0;
  90}
  91
  92static int qmimux_stop(struct net_device *dev)
  93{
  94	netif_carrier_off(dev);
  95	return 0;
  96}
  97
  98static netdev_tx_t qmimux_start_xmit(struct sk_buff *skb, struct net_device *dev)
  99{
 100	struct qmimux_priv *priv = netdev_priv(dev);
 101	unsigned int len = skb->len;
 102	struct qmimux_hdr *hdr;
 103	netdev_tx_t ret;
 104
 105	hdr = skb_push(skb, sizeof(struct qmimux_hdr));
 106	hdr->pad = 0;
 107	hdr->mux_id = priv->mux_id;
 108	hdr->pkt_len = cpu_to_be16(len);
 109	skb->dev = priv->real_dev;
 110	ret = dev_queue_xmit(skb);
 111
 112	if (likely(ret == NET_XMIT_SUCCESS || ret == NET_XMIT_CN))
 113		dev_sw_netstats_tx_add(dev, 1, len);
 114	else
 115		dev->stats.tx_dropped++;
 116
 117	return ret;
 118}
 119
 120static const struct net_device_ops qmimux_netdev_ops = {
 121	.ndo_open        = qmimux_open,
 122	.ndo_stop        = qmimux_stop,
 123	.ndo_start_xmit  = qmimux_start_xmit,
 124	.ndo_get_stats64 = dev_get_tstats64,
 125};
 126
 127static void qmimux_setup(struct net_device *dev)
 128{
 129	dev->header_ops      = NULL;  /* No header */
 130	dev->type            = ARPHRD_NONE;
 131	dev->hard_header_len = 0;
 132	dev->addr_len        = 0;
 133	dev->flags           = IFF_POINTOPOINT | IFF_NOARP | IFF_MULTICAST;
 134	dev->netdev_ops      = &qmimux_netdev_ops;
 135	dev->mtu             = 1500;
 
 136	dev->needs_free_netdev = true;
 137}
 138
 139static struct net_device *qmimux_find_dev(struct usbnet *dev, u8 mux_id)
 140{
 141	struct qmimux_priv *priv;
 142	struct list_head *iter;
 143	struct net_device *ldev;
 144
 145	rcu_read_lock();
 146	netdev_for_each_upper_dev_rcu(dev->net, ldev, iter) {
 147		priv = netdev_priv(ldev);
 148		if (priv->mux_id == mux_id) {
 149			rcu_read_unlock();
 150			return ldev;
 151		}
 152	}
 153	rcu_read_unlock();
 154	return NULL;
 155}
 156
 157static bool qmimux_has_slaves(struct usbnet *dev)
 158{
 159	return !list_empty(&dev->net->adj_list.upper);
 160}
 161
 162static int qmimux_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
 163{
 164	unsigned int len, offset = 0, pad_len, pkt_len;
 165	struct qmimux_hdr *hdr;
 166	struct net_device *net;
 167	struct sk_buff *skbn;
 168	u8 qmimux_hdr_sz = sizeof(*hdr);
 169
 170	while (offset + qmimux_hdr_sz < skb->len) {
 171		hdr = (struct qmimux_hdr *)(skb->data + offset);
 172		len = be16_to_cpu(hdr->pkt_len);
 173
 174		/* drop the packet, bogus length */
 175		if (offset + len + qmimux_hdr_sz > skb->len)
 176			return 0;
 177
 178		/* control packet, we do not know what to do */
 179		if (hdr->pad & 0x80)
 180			goto skip;
 181
 182		/* extract padding length and check for valid length info */
 183		pad_len = hdr->pad & 0x3f;
 184		if (len == 0 || pad_len >= len)
 185			goto skip;
 186		pkt_len = len - pad_len;
 187
 188		net = qmimux_find_dev(dev, hdr->mux_id);
 189		if (!net)
 190			goto skip;
 191		skbn = netdev_alloc_skb(net, pkt_len + LL_MAX_HEADER);
 192		if (!skbn)
 193			return 0;
 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 (kstrtobool(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 (kstrtobool(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	{QMI_MATCH_FF_FF_FF(0x2c7c, 0x0801)},	/* Quectel RM520N */
1092
1093	/* 3. Combined interface devices matching on interface number */
1094	{QMI_FIXED_INTF(0x0408, 0xea42, 4)},	/* Yota / Megafon M100-1 */
1095	{QMI_FIXED_INTF(0x05c6, 0x6001, 3)},	/* 4G LTE usb-modem U901 */
1096	{QMI_FIXED_INTF(0x05c6, 0x7000, 0)},
1097	{QMI_FIXED_INTF(0x05c6, 0x7001, 1)},
1098	{QMI_FIXED_INTF(0x05c6, 0x7002, 1)},
1099	{QMI_FIXED_INTF(0x05c6, 0x7101, 1)},
1100	{QMI_FIXED_INTF(0x05c6, 0x7101, 2)},
1101	{QMI_FIXED_INTF(0x05c6, 0x7101, 3)},
1102	{QMI_FIXED_INTF(0x05c6, 0x7102, 1)},
1103	{QMI_FIXED_INTF(0x05c6, 0x7102, 2)},
1104	{QMI_FIXED_INTF(0x05c6, 0x7102, 3)},
1105	{QMI_FIXED_INTF(0x05c6, 0x8000, 7)},
1106	{QMI_FIXED_INTF(0x05c6, 0x8001, 6)},
1107	{QMI_FIXED_INTF(0x05c6, 0x9000, 4)},
1108	{QMI_FIXED_INTF(0x05c6, 0x9003, 4)},
1109	{QMI_FIXED_INTF(0x05c6, 0x9005, 2)},
1110	{QMI_FIXED_INTF(0x05c6, 0x900a, 4)},
1111	{QMI_FIXED_INTF(0x05c6, 0x900b, 2)},
1112	{QMI_FIXED_INTF(0x05c6, 0x900c, 4)},
1113	{QMI_FIXED_INTF(0x05c6, 0x900c, 5)},
1114	{QMI_FIXED_INTF(0x05c6, 0x900c, 6)},
1115	{QMI_FIXED_INTF(0x05c6, 0x900d, 5)},
1116	{QMI_FIXED_INTF(0x05c6, 0x900f, 3)},
1117	{QMI_FIXED_INTF(0x05c6, 0x900f, 4)},
1118	{QMI_FIXED_INTF(0x05c6, 0x900f, 5)},
1119	{QMI_FIXED_INTF(0x05c6, 0x9010, 4)},
1120	{QMI_FIXED_INTF(0x05c6, 0x9010, 5)},
1121	{QMI_FIXED_INTF(0x05c6, 0x9011, 3)},
1122	{QMI_FIXED_INTF(0x05c6, 0x9011, 4)},
1123	{QMI_FIXED_INTF(0x05c6, 0x9021, 1)},
1124	{QMI_FIXED_INTF(0x05c6, 0x9022, 2)},
1125	{QMI_QUIRK_SET_DTR(0x05c6, 0x9025, 4)},	/* Alcatel-sbell ASB TL131 TDD LTE (China Mobile) */
1126	{QMI_FIXED_INTF(0x05c6, 0x9026, 3)},
1127	{QMI_FIXED_INTF(0x05c6, 0x902e, 5)},
1128	{QMI_FIXED_INTF(0x05c6, 0x9031, 5)},
1129	{QMI_FIXED_INTF(0x05c6, 0x9032, 4)},
1130	{QMI_FIXED_INTF(0x05c6, 0x9033, 3)},
1131	{QMI_FIXED_INTF(0x05c6, 0x9033, 4)},
1132	{QMI_FIXED_INTF(0x05c6, 0x9033, 5)},
1133	{QMI_FIXED_INTF(0x05c6, 0x9033, 6)},
1134	{QMI_FIXED_INTF(0x05c6, 0x9034, 3)},
1135	{QMI_FIXED_INTF(0x05c6, 0x9034, 4)},
1136	{QMI_FIXED_INTF(0x05c6, 0x9034, 5)},
1137	{QMI_FIXED_INTF(0x05c6, 0x9034, 6)},
1138	{QMI_FIXED_INTF(0x05c6, 0x9034, 7)},
1139	{QMI_FIXED_INTF(0x05c6, 0x9035, 4)},
1140	{QMI_FIXED_INTF(0x05c6, 0x9036, 3)},
1141	{QMI_FIXED_INTF(0x05c6, 0x9037, 5)},
1142	{QMI_FIXED_INTF(0x05c6, 0x9038, 4)},
1143	{QMI_FIXED_INTF(0x05c6, 0x903b, 7)},
1144	{QMI_FIXED_INTF(0x05c6, 0x903c, 6)},
1145	{QMI_FIXED_INTF(0x05c6, 0x903d, 6)},
1146	{QMI_FIXED_INTF(0x05c6, 0x903e, 5)},
1147	{QMI_FIXED_INTF(0x05c6, 0x9043, 3)},
1148	{QMI_FIXED_INTF(0x05c6, 0x9046, 3)},
1149	{QMI_FIXED_INTF(0x05c6, 0x9046, 4)},
1150	{QMI_FIXED_INTF(0x05c6, 0x9046, 5)},
1151	{QMI_FIXED_INTF(0x05c6, 0x9047, 2)},
1152	{QMI_FIXED_INTF(0x05c6, 0x9047, 3)},
1153	{QMI_FIXED_INTF(0x05c6, 0x9047, 4)},
1154	{QMI_FIXED_INTF(0x05c6, 0x9048, 4)},
1155	{QMI_FIXED_INTF(0x05c6, 0x9048, 5)},
1156	{QMI_FIXED_INTF(0x05c6, 0x9048, 6)},
1157	{QMI_FIXED_INTF(0x05c6, 0x9048, 7)},
1158	{QMI_FIXED_INTF(0x05c6, 0x9048, 8)},
1159	{QMI_FIXED_INTF(0x05c6, 0x904c, 5)},
1160	{QMI_FIXED_INTF(0x05c6, 0x904c, 6)},
1161	{QMI_FIXED_INTF(0x05c6, 0x904c, 7)},
1162	{QMI_FIXED_INTF(0x05c6, 0x904c, 8)},
1163	{QMI_FIXED_INTF(0x05c6, 0x9050, 3)},
1164	{QMI_FIXED_INTF(0x05c6, 0x9052, 4)},
1165	{QMI_FIXED_INTF(0x05c6, 0x9053, 6)},
1166	{QMI_FIXED_INTF(0x05c6, 0x9053, 7)},
1167	{QMI_FIXED_INTF(0x05c6, 0x9054, 5)},
1168	{QMI_FIXED_INTF(0x05c6, 0x9054, 6)},
1169	{QMI_FIXED_INTF(0x05c6, 0x9055, 3)},
1170	{QMI_FIXED_INTF(0x05c6, 0x9055, 4)},
1171	{QMI_FIXED_INTF(0x05c6, 0x9055, 5)},
1172	{QMI_FIXED_INTF(0x05c6, 0x9055, 6)},
1173	{QMI_FIXED_INTF(0x05c6, 0x9055, 7)},
1174	{QMI_FIXED_INTF(0x05c6, 0x9056, 3)},
1175	{QMI_FIXED_INTF(0x05c6, 0x9062, 2)},
1176	{QMI_FIXED_INTF(0x05c6, 0x9062, 3)},
1177	{QMI_FIXED_INTF(0x05c6, 0x9062, 4)},
1178	{QMI_FIXED_INTF(0x05c6, 0x9062, 5)},
1179	{QMI_FIXED_INTF(0x05c6, 0x9062, 6)},
1180	{QMI_FIXED_INTF(0x05c6, 0x9062, 7)},
1181	{QMI_FIXED_INTF(0x05c6, 0x9062, 8)},
1182	{QMI_FIXED_INTF(0x05c6, 0x9062, 9)},
1183	{QMI_FIXED_INTF(0x05c6, 0x9064, 3)},
1184	{QMI_FIXED_INTF(0x05c6, 0x9065, 6)},
1185	{QMI_FIXED_INTF(0x05c6, 0x9065, 7)},
1186	{QMI_FIXED_INTF(0x05c6, 0x9066, 5)},
1187	{QMI_FIXED_INTF(0x05c6, 0x9066, 6)},
1188	{QMI_FIXED_INTF(0x05c6, 0x9067, 1)},
1189	{QMI_FIXED_INTF(0x05c6, 0x9068, 2)},
1190	{QMI_FIXED_INTF(0x05c6, 0x9068, 3)},
1191	{QMI_FIXED_INTF(0x05c6, 0x9068, 4)},
1192	{QMI_FIXED_INTF(0x05c6, 0x9068, 5)},
1193	{QMI_FIXED_INTF(0x05c6, 0x9068, 6)},
1194	{QMI_FIXED_INTF(0x05c6, 0x9068, 7)},
1195	{QMI_FIXED_INTF(0x05c6, 0x9069, 5)},
1196	{QMI_FIXED_INTF(0x05c6, 0x9069, 6)},
1197	{QMI_FIXED_INTF(0x05c6, 0x9069, 7)},
1198	{QMI_FIXED_INTF(0x05c6, 0x9069, 8)},
1199	{QMI_FIXED_INTF(0x05c6, 0x9070, 4)},
1200	{QMI_FIXED_INTF(0x05c6, 0x9070, 5)},
1201	{QMI_FIXED_INTF(0x05c6, 0x9075, 5)},
1202	{QMI_FIXED_INTF(0x05c6, 0x9076, 4)},
1203	{QMI_FIXED_INTF(0x05c6, 0x9076, 5)},
1204	{QMI_FIXED_INTF(0x05c6, 0x9076, 6)},
1205	{QMI_FIXED_INTF(0x05c6, 0x9076, 7)},
1206	{QMI_FIXED_INTF(0x05c6, 0x9076, 8)},
1207	{QMI_FIXED_INTF(0x05c6, 0x9077, 3)},
1208	{QMI_FIXED_INTF(0x05c6, 0x9077, 4)},
1209	{QMI_FIXED_INTF(0x05c6, 0x9077, 5)},
1210	{QMI_FIXED_INTF(0x05c6, 0x9077, 6)},
1211	{QMI_FIXED_INTF(0x05c6, 0x9078, 3)},
1212	{QMI_FIXED_INTF(0x05c6, 0x9079, 4)},
1213	{QMI_FIXED_INTF(0x05c6, 0x9079, 5)},
1214	{QMI_FIXED_INTF(0x05c6, 0x9079, 6)},
1215	{QMI_FIXED_INTF(0x05c6, 0x9079, 7)},
1216	{QMI_FIXED_INTF(0x05c6, 0x9079, 8)},
1217	{QMI_FIXED_INTF(0x05c6, 0x9080, 5)},
1218	{QMI_FIXED_INTF(0x05c6, 0x9080, 6)},
1219	{QMI_FIXED_INTF(0x05c6, 0x9080, 7)},
1220	{QMI_FIXED_INTF(0x05c6, 0x9080, 8)},
1221	{QMI_FIXED_INTF(0x05c6, 0x9083, 3)},
1222	{QMI_FIXED_INTF(0x05c6, 0x9084, 4)},
1223	{QMI_QUIRK_SET_DTR(0x05c6, 0x9091, 2)},	/* Compal RXM-G1 */
1224	{QMI_FIXED_INTF(0x05c6, 0x90b2, 3)},    /* ublox R410M */
1225	{QMI_QUIRK_SET_DTR(0x05c6, 0x90db, 2)},	/* Compal RXM-G1 */
1226	{QMI_FIXED_INTF(0x05c6, 0x920d, 0)},
1227	{QMI_FIXED_INTF(0x05c6, 0x920d, 5)},
1228	{QMI_QUIRK_SET_DTR(0x05c6, 0x9625, 4)},	/* YUGA CLM920-NC5 */
1229	{QMI_FIXED_INTF(0x0846, 0x68a2, 8)},
1230	{QMI_FIXED_INTF(0x0846, 0x68d3, 8)},	/* Netgear Aircard 779S */
1231	{QMI_FIXED_INTF(0x12d1, 0x140c, 1)},	/* Huawei E173 */
1232	{QMI_FIXED_INTF(0x12d1, 0x14ac, 1)},	/* Huawei E1820 */
1233	{QMI_FIXED_INTF(0x1435, 0x0918, 3)},	/* Wistron NeWeb D16Q1 */
1234	{QMI_FIXED_INTF(0x1435, 0x0918, 4)},	/* Wistron NeWeb D16Q1 */
1235	{QMI_FIXED_INTF(0x1435, 0x0918, 5)},	/* Wistron NeWeb D16Q1 */
1236	{QMI_FIXED_INTF(0x1435, 0x3185, 4)},	/* Wistron NeWeb M18Q5 */
1237	{QMI_FIXED_INTF(0x1435, 0xd111, 4)},	/* M9615A DM11-1 D51QC */
1238	{QMI_FIXED_INTF(0x1435, 0xd181, 3)},	/* Wistron NeWeb D18Q1 */
1239	{QMI_FIXED_INTF(0x1435, 0xd181, 4)},	/* Wistron NeWeb D18Q1 */
1240	{QMI_FIXED_INTF(0x1435, 0xd181, 5)},	/* Wistron NeWeb D18Q1 */
1241	{QMI_FIXED_INTF(0x1435, 0xd182, 4)},	/* Wistron NeWeb D18 */
1242	{QMI_FIXED_INTF(0x1435, 0xd182, 5)},	/* Wistron NeWeb D18 */
1243	{QMI_FIXED_INTF(0x1435, 0xd191, 4)},	/* Wistron NeWeb D19Q1 */
1244	{QMI_QUIRK_SET_DTR(0x1508, 0x1001, 4)},	/* Fibocom NL668 series */
1245	{QMI_FIXED_INTF(0x1690, 0x7588, 4)},    /* ASKEY WWHC050 */
1246	{QMI_FIXED_INTF(0x16d8, 0x6003, 0)},	/* CMOTech 6003 */
1247	{QMI_FIXED_INTF(0x16d8, 0x6007, 0)},	/* CMOTech CHE-628S */
1248	{QMI_FIXED_INTF(0x16d8, 0x6008, 0)},	/* CMOTech CMU-301 */
1249	{QMI_FIXED_INTF(0x16d8, 0x6280, 0)},	/* CMOTech CHU-628 */
1250	{QMI_FIXED_INTF(0x16d8, 0x7001, 0)},	/* CMOTech CHU-720S */
1251	{QMI_FIXED_INTF(0x16d8, 0x7002, 0)},	/* CMOTech 7002 */
1252	{QMI_FIXED_INTF(0x16d8, 0x7003, 4)},	/* CMOTech CHU-629K */
1253	{QMI_FIXED_INTF(0x16d8, 0x7004, 3)},	/* CMOTech 7004 */
1254	{QMI_FIXED_INTF(0x16d8, 0x7006, 5)},	/* CMOTech CGU-629 */
1255	{QMI_FIXED_INTF(0x16d8, 0x700a, 4)},	/* CMOTech CHU-629S */
1256	{QMI_FIXED_INTF(0x16d8, 0x7211, 0)},	/* CMOTech CHU-720I */
1257	{QMI_FIXED_INTF(0x16d8, 0x7212, 0)},	/* CMOTech 7212 */
1258	{QMI_FIXED_INTF(0x16d8, 0x7213, 0)},	/* CMOTech 7213 */
1259	{QMI_FIXED_INTF(0x16d8, 0x7251, 1)},	/* CMOTech 7251 */
1260	{QMI_FIXED_INTF(0x16d8, 0x7252, 1)},	/* CMOTech 7252 */
1261	{QMI_FIXED_INTF(0x16d8, 0x7253, 1)},	/* CMOTech 7253 */
1262	{QMI_FIXED_INTF(0x19d2, 0x0002, 1)},
1263	{QMI_FIXED_INTF(0x19d2, 0x0012, 1)},
1264	{QMI_FIXED_INTF(0x19d2, 0x0017, 3)},
1265	{QMI_FIXED_INTF(0x19d2, 0x0019, 3)},	/* ONDA MT689DC */
1266	{QMI_FIXED_INTF(0x19d2, 0x0021, 4)},
1267	{QMI_FIXED_INTF(0x19d2, 0x0025, 1)},
1268	{QMI_FIXED_INTF(0x19d2, 0x0031, 4)},
1269	{QMI_FIXED_INTF(0x19d2, 0x0042, 4)},
1270	{QMI_FIXED_INTF(0x19d2, 0x0049, 5)},
1271	{QMI_FIXED_INTF(0x19d2, 0x0052, 4)},
1272	{QMI_FIXED_INTF(0x19d2, 0x0055, 1)},	/* ZTE (Vodafone) K3520-Z */
1273	{QMI_FIXED_INTF(0x19d2, 0x0058, 4)},
1274	{QMI_FIXED_INTF(0x19d2, 0x0063, 4)},	/* ZTE (Vodafone) K3565-Z */
1275	{QMI_FIXED_INTF(0x19d2, 0x0104, 4)},	/* ZTE (Vodafone) K4505-Z */
1276	{QMI_FIXED_INTF(0x19d2, 0x0113, 5)},
1277	{QMI_FIXED_INTF(0x19d2, 0x0118, 5)},
1278	{QMI_FIXED_INTF(0x19d2, 0x0121, 5)},
1279	{QMI_FIXED_INTF(0x19d2, 0x0123, 4)},
1280	{QMI_FIXED_INTF(0x19d2, 0x0124, 5)},
1281	{QMI_FIXED_INTF(0x19d2, 0x0125, 6)},
1282	{QMI_FIXED_INTF(0x19d2, 0x0126, 5)},
1283	{QMI_FIXED_INTF(0x19d2, 0x0130, 1)},
1284	{QMI_FIXED_INTF(0x19d2, 0x0133, 3)},
1285	{QMI_FIXED_INTF(0x19d2, 0x0141, 5)},
1286	{QMI_FIXED_INTF(0x19d2, 0x0157, 5)},	/* ZTE MF683 */
1287	{QMI_FIXED_INTF(0x19d2, 0x0158, 3)},
1288	{QMI_FIXED_INTF(0x19d2, 0x0167, 4)},	/* ZTE MF820D */
1289	{QMI_FIXED_INTF(0x19d2, 0x0168, 4)},
1290	{QMI_FIXED_INTF(0x19d2, 0x0176, 3)},
1291	{QMI_FIXED_INTF(0x19d2, 0x0178, 3)},
1292	{QMI_FIXED_INTF(0x19d2, 0x0189, 4)},    /* ZTE MF290 */
1293	{QMI_FIXED_INTF(0x19d2, 0x0191, 4)},	/* ZTE EuFi890 */
1294	{QMI_FIXED_INTF(0x19d2, 0x0199, 1)},	/* ZTE MF820S */
1295	{QMI_FIXED_INTF(0x19d2, 0x0200, 1)},
1296	{QMI_FIXED_INTF(0x19d2, 0x0257, 3)},	/* ZTE MF821 */
1297	{QMI_FIXED_INTF(0x19d2, 0x0265, 4)},	/* ONDA MT8205 4G LTE */
1298	{QMI_FIXED_INTF(0x19d2, 0x0284, 4)},	/* ZTE MF880 */
1299	{QMI_FIXED_INTF(0x19d2, 0x0326, 4)},	/* ZTE MF821D */
1300	{QMI_FIXED_INTF(0x19d2, 0x0396, 3)},	/* ZTE ZM8620 */
1301	{QMI_FIXED_INTF(0x19d2, 0x0412, 4)},	/* Telewell TW-LTE 4G */
1302	{QMI_FIXED_INTF(0x19d2, 0x1008, 4)},	/* ZTE (Vodafone) K3570-Z */
1303	{QMI_FIXED_INTF(0x19d2, 0x1010, 4)},	/* ZTE (Vodafone) K3571-Z */
1304	{QMI_FIXED_INTF(0x19d2, 0x1012, 4)},
1305	{QMI_FIXED_INTF(0x19d2, 0x1018, 3)},	/* ZTE (Vodafone) K5006-Z */
1306	{QMI_FIXED_INTF(0x19d2, 0x1021, 2)},
1307	{QMI_FIXED_INTF(0x19d2, 0x1245, 4)},
1308	{QMI_FIXED_INTF(0x19d2, 0x1247, 4)},
1309	{QMI_FIXED_INTF(0x19d2, 0x1252, 4)},
1310	{QMI_FIXED_INTF(0x19d2, 0x1254, 4)},
1311	{QMI_FIXED_INTF(0x19d2, 0x1255, 3)},
1312	{QMI_FIXED_INTF(0x19d2, 0x1255, 4)},
1313	{QMI_FIXED_INTF(0x19d2, 0x1256, 4)},
1314	{QMI_FIXED_INTF(0x19d2, 0x1270, 5)},	/* ZTE MF667 */
1315	{QMI_FIXED_INTF(0x19d2, 0x1275, 3)},	/* ZTE P685M */
1316	{QMI_FIXED_INTF(0x19d2, 0x1401, 2)},
1317	{QMI_FIXED_INTF(0x19d2, 0x1402, 2)},	/* ZTE MF60 */
1318	{QMI_FIXED_INTF(0x19d2, 0x1424, 2)},
1319	{QMI_FIXED_INTF(0x19d2, 0x1425, 2)},
1320	{QMI_FIXED_INTF(0x19d2, 0x1426, 2)},	/* ZTE MF91 */
1321	{QMI_FIXED_INTF(0x19d2, 0x1428, 2)},	/* Telewell TW-LTE 4G v2 */
1322	{QMI_FIXED_INTF(0x19d2, 0x1432, 3)},	/* ZTE ME3620 */
1323	{QMI_FIXED_INTF(0x19d2, 0x1485, 5)},	/* ZTE MF286D */
1324	{QMI_FIXED_INTF(0x19d2, 0x2002, 4)},	/* ZTE (Vodafone) K3765-Z */
1325	{QMI_FIXED_INTF(0x2001, 0x7e16, 3)},	/* D-Link DWM-221 */
1326	{QMI_FIXED_INTF(0x2001, 0x7e19, 4)},	/* D-Link DWM-221 B1 */
1327	{QMI_FIXED_INTF(0x2001, 0x7e35, 4)},	/* D-Link DWM-222 */
1328	{QMI_FIXED_INTF(0x2001, 0x7e3d, 4)},	/* D-Link DWM-222 A2 */
1329	{QMI_FIXED_INTF(0x2020, 0x2031, 4)},	/* Olicard 600 */
1330	{QMI_FIXED_INTF(0x2020, 0x2033, 4)},	/* BroadMobi BM806U */
1331	{QMI_QUIRK_SET_DTR(0x2020, 0x2060, 4)},	/* BroadMobi BM818 */
1332	{QMI_FIXED_INTF(0x0f3d, 0x68a2, 8)},    /* Sierra Wireless MC7700 */
1333	{QMI_FIXED_INTF(0x114f, 0x68a2, 8)},    /* Sierra Wireless MC7750 */
1334	{QMI_FIXED_INTF(0x1199, 0x68a2, 8)},	/* Sierra Wireless MC7710 in QMI mode */
1335	{QMI_FIXED_INTF(0x1199, 0x68a2, 19)},	/* Sierra Wireless MC7710 in QMI mode */
1336	{QMI_QUIRK_SET_DTR(0x1199, 0x68c0, 8)},	/* Sierra Wireless MC7304/MC7354, WP76xx */
1337	{QMI_QUIRK_SET_DTR(0x1199, 0x68c0, 10)},/* Sierra Wireless MC7304/MC7354 */
1338	{QMI_FIXED_INTF(0x1199, 0x901c, 8)},    /* Sierra Wireless EM7700 */
1339	{QMI_FIXED_INTF(0x1199, 0x901f, 8)},    /* Sierra Wireless EM7355 */
1340	{QMI_FIXED_INTF(0x1199, 0x9041, 8)},	/* Sierra Wireless MC7305/MC7355 */
1341	{QMI_FIXED_INTF(0x1199, 0x9041, 10)},	/* Sierra Wireless MC7305/MC7355 */
1342	{QMI_FIXED_INTF(0x1199, 0x9051, 8)},	/* Netgear AirCard 340U */
1343	{QMI_FIXED_INTF(0x1199, 0x9053, 8)},	/* Sierra Wireless Modem */
1344	{QMI_FIXED_INTF(0x1199, 0x9054, 8)},	/* Sierra Wireless Modem */
1345	{QMI_FIXED_INTF(0x1199, 0x9055, 8)},	/* Netgear AirCard 341U */
1346	{QMI_FIXED_INTF(0x1199, 0x9056, 8)},	/* Sierra Wireless Modem */
1347	{QMI_FIXED_INTF(0x1199, 0x9057, 8)},
1348	{QMI_FIXED_INTF(0x1199, 0x9061, 8)},	/* Sierra Wireless Modem */
1349	{QMI_FIXED_INTF(0x1199, 0x9063, 8)},	/* Sierra Wireless EM7305 */
1350	{QMI_FIXED_INTF(0x1199, 0x9063, 10)},	/* Sierra Wireless EM7305 */
1351	{QMI_QUIRK_SET_DTR(0x1199, 0x9071, 8)},	/* Sierra Wireless MC74xx */
1352	{QMI_QUIRK_SET_DTR(0x1199, 0x9071, 10)},/* Sierra Wireless MC74xx */
1353	{QMI_QUIRK_SET_DTR(0x1199, 0x9079, 8)},	/* Sierra Wireless EM74xx */
1354	{QMI_QUIRK_SET_DTR(0x1199, 0x9079, 10)},/* Sierra Wireless EM74xx */
1355	{QMI_QUIRK_SET_DTR(0x1199, 0x907b, 8)},	/* Sierra Wireless EM74xx */
1356	{QMI_QUIRK_SET_DTR(0x1199, 0x907b, 10)},/* Sierra Wireless EM74xx */
1357	{QMI_QUIRK_SET_DTR(0x1199, 0x9091, 8)},	/* Sierra Wireless EM7565 */
1358	{QMI_QUIRK_SET_DTR(0x1199, 0xc081, 8)},	/* Sierra Wireless EM7590 */
1359	{QMI_FIXED_INTF(0x1bbb, 0x011e, 4)},	/* Telekom Speedstick LTE II (Alcatel One Touch L100V LTE) */
1360	{QMI_FIXED_INTF(0x1bbb, 0x0203, 2)},	/* Alcatel L800MA */
1361	{QMI_FIXED_INTF(0x2357, 0x0201, 4)},	/* TP-LINK HSUPA Modem MA180 */
1362	{QMI_FIXED_INTF(0x2357, 0x9000, 4)},	/* TP-LINK MA260 */
1363	{QMI_QUIRK_SET_DTR(0x1bc7, 0x1031, 3)}, /* Telit LE910C1-EUX */
1364	{QMI_QUIRK_SET_DTR(0x1bc7, 0x103a, 0)}, /* Telit LE910C4-WWX */
1365	{QMI_QUIRK_SET_DTR(0x1bc7, 0x1040, 2)},	/* Telit LE922A */
1366	{QMI_QUIRK_SET_DTR(0x1bc7, 0x1050, 2)},	/* Telit FN980 */
1367	{QMI_QUIRK_SET_DTR(0x1bc7, 0x1057, 2)},	/* Telit FN980 */
1368	{QMI_QUIRK_SET_DTR(0x1bc7, 0x1060, 2)},	/* Telit LN920 */
1369	{QMI_QUIRK_SET_DTR(0x1bc7, 0x1070, 2)},	/* Telit FN990 */
1370	{QMI_QUIRK_SET_DTR(0x1bc7, 0x1080, 2)}, /* Telit FE990 */
 
 
 
 
 
 
1371	{QMI_FIXED_INTF(0x1bc7, 0x1100, 3)},	/* Telit ME910 */
1372	{QMI_FIXED_INTF(0x1bc7, 0x1101, 3)},	/* Telit ME910 dual modem */
1373	{QMI_FIXED_INTF(0x1bc7, 0x1200, 5)},	/* Telit LE920 */
1374	{QMI_QUIRK_SET_DTR(0x1bc7, 0x1201, 2)},	/* Telit LE920, LE920A4 */
1375	{QMI_QUIRK_SET_DTR(0x1bc7, 0x1230, 2)},	/* Telit LE910Cx */
1376	{QMI_QUIRK_SET_DTR(0x1bc7, 0x1250, 0)},	/* Telit LE910Cx */
1377	{QMI_QUIRK_SET_DTR(0x1bc7, 0x1260, 2)},	/* Telit LE910Cx */
1378	{QMI_QUIRK_SET_DTR(0x1bc7, 0x1261, 2)},	/* Telit LE910Cx */
1379	{QMI_QUIRK_SET_DTR(0x1bc7, 0x1900, 1)},	/* Telit LN940 series */
 
 
1380	{QMI_FIXED_INTF(0x1c9e, 0x9801, 3)},	/* Telewell TW-3G HSPA+ */
1381	{QMI_FIXED_INTF(0x1c9e, 0x9803, 4)},	/* Telewell TW-3G HSPA+ */
1382	{QMI_FIXED_INTF(0x1c9e, 0x9b01, 3)},	/* XS Stick W100-2 from 4G Systems */
 
 
1383	{QMI_FIXED_INTF(0x0b3c, 0xc000, 4)},	/* Olivetti Olicard 100 */
1384	{QMI_FIXED_INTF(0x0b3c, 0xc001, 4)},	/* Olivetti Olicard 120 */
1385	{QMI_FIXED_INTF(0x0b3c, 0xc002, 4)},	/* Olivetti Olicard 140 */
1386	{QMI_FIXED_INTF(0x0b3c, 0xc004, 6)},	/* Olivetti Olicard 155 */
1387	{QMI_FIXED_INTF(0x0b3c, 0xc005, 6)},	/* Olivetti Olicard 200 */
1388	{QMI_FIXED_INTF(0x0b3c, 0xc00a, 6)},	/* Olivetti Olicard 160 */
1389	{QMI_FIXED_INTF(0x0b3c, 0xc00b, 4)},	/* Olivetti Olicard 500 */
1390	{QMI_FIXED_INTF(0x1e2d, 0x0060, 4)},	/* Cinterion PLxx */
1391	{QMI_QUIRK_SET_DTR(0x1e2d, 0x006f, 8)}, /* Cinterion PLS83/PLS63 */
1392	{QMI_FIXED_INTF(0x1e2d, 0x0053, 4)},	/* Cinterion PHxx,PXxx */
1393	{QMI_FIXED_INTF(0x1e2d, 0x0063, 10)},	/* Cinterion ALASxx (1 RmNet) */
1394	{QMI_FIXED_INTF(0x1e2d, 0x0082, 4)},	/* Cinterion PHxx,PXxx (2 RmNet) */
1395	{QMI_FIXED_INTF(0x1e2d, 0x0082, 5)},	/* Cinterion PHxx,PXxx (2 RmNet) */
1396	{QMI_FIXED_INTF(0x1e2d, 0x0083, 4)},	/* Cinterion PHxx,PXxx (1 RmNet + USB Audio)*/
1397	{QMI_QUIRK_SET_DTR(0x1e2d, 0x00b0, 4)},	/* Cinterion CLS8 */
1398	{QMI_FIXED_INTF(0x1e2d, 0x00b7, 0)},	/* Cinterion MV31 RmNet */
1399	{QMI_FIXED_INTF(0x1e2d, 0x00b9, 0)},	/* Cinterion MV31 RmNet based on new baseline */
1400	{QMI_FIXED_INTF(0x1e2d, 0x00f3, 0)},	/* Cinterion MV32-W-A RmNet */
1401	{QMI_FIXED_INTF(0x1e2d, 0x00f4, 0)},	/* Cinterion MV32-W-B RmNet */
1402	{QMI_FIXED_INTF(0x413c, 0x81a2, 8)},	/* Dell Wireless 5806 Gobi(TM) 4G LTE Mobile Broadband Card */
1403	{QMI_FIXED_INTF(0x413c, 0x81a3, 8)},	/* Dell Wireless 5570 HSPA+ (42Mbps) Mobile Broadband Card */
1404	{QMI_FIXED_INTF(0x413c, 0x81a4, 8)},	/* Dell Wireless 5570e HSPA+ (42Mbps) Mobile Broadband Card */
1405	{QMI_FIXED_INTF(0x413c, 0x81a8, 8)},	/* Dell Wireless 5808 Gobi(TM) 4G LTE Mobile Broadband Card */
1406	{QMI_FIXED_INTF(0x413c, 0x81a9, 8)},	/* Dell Wireless 5808e Gobi(TM) 4G LTE Mobile Broadband Card */
1407	{QMI_FIXED_INTF(0x413c, 0x81b1, 8)},	/* Dell Wireless 5809e Gobi(TM) 4G LTE Mobile Broadband Card */
1408	{QMI_FIXED_INTF(0x413c, 0x81b3, 8)},	/* Dell Wireless 5809e Gobi(TM) 4G LTE Mobile Broadband Card (rev3) */
1409	{QMI_FIXED_INTF(0x413c, 0x81b6, 8)},	/* Dell Wireless 5811e */
1410	{QMI_FIXED_INTF(0x413c, 0x81b6, 10)},	/* Dell Wireless 5811e */
1411	{QMI_FIXED_INTF(0x413c, 0x81c2, 8)},	/* Dell Wireless 5811e */
1412	{QMI_FIXED_INTF(0x413c, 0x81cc, 8)},	/* Dell Wireless 5816e */
1413	{QMI_FIXED_INTF(0x413c, 0x81d7, 0)},	/* Dell Wireless 5821e */
1414	{QMI_FIXED_INTF(0x413c, 0x81d7, 1)},	/* Dell Wireless 5821e preproduction config */
1415	{QMI_FIXED_INTF(0x413c, 0x81e0, 0)},	/* Dell Wireless 5821e with eSIM support*/
1416	{QMI_FIXED_INTF(0x413c, 0x81e4, 0)},	/* Dell Wireless 5829e with eSIM support*/
1417	{QMI_FIXED_INTF(0x413c, 0x81e6, 0)},	/* Dell Wireless 5829e */
1418	{QMI_FIXED_INTF(0x03f0, 0x4e1d, 8)},	/* HP lt4111 LTE/EV-DO/HSPA+ Gobi 4G Module */
1419	{QMI_FIXED_INTF(0x03f0, 0x9d1d, 1)},	/* HP lt4120 Snapdragon X5 LTE */
1420	{QMI_QUIRK_SET_DTR(0x22de, 0x9051, 2)}, /* Hucom Wireless HM-211S/K */
1421	{QMI_FIXED_INTF(0x22de, 0x9061, 3)},	/* WeTelecom WPD-600N */
1422	{QMI_QUIRK_SET_DTR(0x1e0e, 0x9001, 5)},	/* SIMCom 7100E, 7230E, 7600E ++ */
1423	{QMI_QUIRK_SET_DTR(0x2c7c, 0x0121, 4)},	/* Quectel EC21 Mini PCIe */
1424	{QMI_QUIRK_SET_DTR(0x2c7c, 0x0191, 4)},	/* Quectel EG91 */
1425	{QMI_QUIRK_SET_DTR(0x2c7c, 0x0195, 4)},	/* Quectel EG95 */
1426	{QMI_FIXED_INTF(0x2c7c, 0x0296, 4)},	/* Quectel BG96 */
1427	{QMI_QUIRK_SET_DTR(0x2c7c, 0x030e, 4)},	/* Quectel EM05GV2 */
 
1428	{QMI_QUIRK_SET_DTR(0x2cb7, 0x0104, 4)},	/* Fibocom NL678 series */
 
1429	{QMI_FIXED_INTF(0x0489, 0xe0b4, 0)},	/* Foxconn T77W968 LTE */
1430	{QMI_FIXED_INTF(0x0489, 0xe0b5, 0)},	/* Foxconn T77W968 LTE with eSIM support*/
1431	{QMI_FIXED_INTF(0x2692, 0x9025, 4)},    /* Cellient MPL200 (rebranded Qualcomm 05c6:9025) */
1432	{QMI_QUIRK_SET_DTR(0x1546, 0x1312, 4)},	/* u-blox LARA-R6 01B */
1433	{QMI_QUIRK_SET_DTR(0x1546, 0x1342, 4)},	/* u-blox LARA-L6 */
 
 
1434
1435	/* 4. Gobi 1000 devices */
1436	{QMI_GOBI1K_DEVICE(0x05c6, 0x9212)},	/* Acer Gobi Modem Device */
1437	{QMI_GOBI1K_DEVICE(0x03f0, 0x1f1d)},	/* HP un2400 Gobi Modem Device */
1438	{QMI_GOBI1K_DEVICE(0x04da, 0x250d)},	/* Panasonic Gobi Modem device */
1439	{QMI_GOBI1K_DEVICE(0x413c, 0x8172)},	/* Dell Gobi Modem device */
1440	{QMI_GOBI1K_DEVICE(0x1410, 0xa001)},	/* Novatel/Verizon USB-1000 */
1441	{QMI_GOBI1K_DEVICE(0x1410, 0xa002)},	/* Novatel Gobi Modem device */
1442	{QMI_GOBI1K_DEVICE(0x1410, 0xa003)},	/* Novatel Gobi Modem device */
1443	{QMI_GOBI1K_DEVICE(0x1410, 0xa004)},	/* Novatel Gobi Modem device */
1444	{QMI_GOBI1K_DEVICE(0x1410, 0xa005)},	/* Novatel Gobi Modem device */
1445	{QMI_GOBI1K_DEVICE(0x1410, 0xa006)},	/* Novatel Gobi Modem device */
1446	{QMI_GOBI1K_DEVICE(0x1410, 0xa007)},	/* Novatel Gobi Modem device */
1447	{QMI_GOBI1K_DEVICE(0x0b05, 0x1776)},	/* Asus Gobi Modem device */
1448	{QMI_GOBI1K_DEVICE(0x19d2, 0xfff3)},	/* ONDA Gobi Modem device */
1449	{QMI_GOBI1K_DEVICE(0x05c6, 0x9001)},	/* Generic Gobi Modem device */
1450	{QMI_GOBI1K_DEVICE(0x05c6, 0x9002)},	/* Generic Gobi Modem device */
1451	{QMI_GOBI1K_DEVICE(0x05c6, 0x9202)},	/* Generic Gobi Modem device */
1452	{QMI_GOBI1K_DEVICE(0x05c6, 0x9203)},	/* Generic Gobi Modem device */
1453	{QMI_GOBI1K_DEVICE(0x05c6, 0x9222)},	/* Generic Gobi Modem device */
1454	{QMI_GOBI1K_DEVICE(0x05c6, 0x9009)},	/* Generic Gobi Modem device */
1455
1456	/* 5. Gobi 2000 and 3000 devices */
1457	{QMI_GOBI_DEVICE(0x413c, 0x8186)},	/* Dell Gobi 2000 Modem device (N0218, VU936) */
1458	{QMI_GOBI_DEVICE(0x413c, 0x8194)},	/* Dell Gobi 3000 Composite */
1459	{QMI_GOBI_DEVICE(0x05c6, 0x920b)},	/* Generic Gobi 2000 Modem device */
1460	{QMI_GOBI_DEVICE(0x05c6, 0x9225)},	/* Sony Gobi 2000 Modem device (N0279, VU730) */
1461	{QMI_GOBI_DEVICE(0x05c6, 0x9245)},	/* Samsung Gobi 2000 Modem device (VL176) */
1462	{QMI_GOBI_DEVICE(0x03f0, 0x251d)},	/* HP Gobi 2000 Modem device (VP412) */
1463	{QMI_GOBI_DEVICE(0x05c6, 0x9215)},	/* Acer Gobi 2000 Modem device (VP413) */
1464	{QMI_FIXED_INTF(0x05c6, 0x9215, 4)},	/* Quectel EC20 Mini PCIe */
1465	{QMI_GOBI_DEVICE(0x05c6, 0x9265)},	/* Asus Gobi 2000 Modem device (VR305) */
1466	{QMI_GOBI_DEVICE(0x05c6, 0x9235)},	/* Top Global Gobi 2000 Modem device (VR306) */
1467	{QMI_GOBI_DEVICE(0x05c6, 0x9275)},	/* iRex Technologies Gobi 2000 Modem device (VR307) */
1468	{QMI_GOBI_DEVICE(0x0af0, 0x8120)},	/* Option GTM681W */
1469	{QMI_GOBI_DEVICE(0x1199, 0x68a5)},	/* Sierra Wireless Modem */
1470	{QMI_GOBI_DEVICE(0x1199, 0x68a9)},	/* Sierra Wireless Modem */
1471	{QMI_GOBI_DEVICE(0x1199, 0x9001)},	/* Sierra Wireless Gobi 2000 Modem device (VT773) */
1472	{QMI_GOBI_DEVICE(0x1199, 0x9002)},	/* Sierra Wireless Gobi 2000 Modem device (VT773) */
1473	{QMI_GOBI_DEVICE(0x1199, 0x9003)},	/* Sierra Wireless Gobi 2000 Modem device (VT773) */
1474	{QMI_GOBI_DEVICE(0x1199, 0x9004)},	/* Sierra Wireless Gobi 2000 Modem device (VT773) */
1475	{QMI_GOBI_DEVICE(0x1199, 0x9005)},	/* Sierra Wireless Gobi 2000 Modem device (VT773) */
1476	{QMI_GOBI_DEVICE(0x1199, 0x9006)},	/* Sierra Wireless Gobi 2000 Modem device (VT773) */
1477	{QMI_GOBI_DEVICE(0x1199, 0x9007)},	/* Sierra Wireless Gobi 2000 Modem device (VT773) */
1478	{QMI_GOBI_DEVICE(0x1199, 0x9008)},	/* Sierra Wireless Gobi 2000 Modem device (VT773) */
1479	{QMI_GOBI_DEVICE(0x1199, 0x9009)},	/* Sierra Wireless Gobi 2000 Modem device (VT773) */
1480	{QMI_GOBI_DEVICE(0x1199, 0x900a)},	/* Sierra Wireless Gobi 2000 Modem device (VT773) */
1481	{QMI_GOBI_DEVICE(0x1199, 0x9011)},	/* Sierra Wireless Gobi 2000 Modem device (MC8305) */
1482	{QMI_GOBI_DEVICE(0x16d8, 0x8002)},	/* CMDTech Gobi 2000 Modem device (VU922) */
1483	{QMI_GOBI_DEVICE(0x05c6, 0x9205)},	/* Gobi 2000 Modem device */
1484	{QMI_GOBI_DEVICE(0x1199, 0x9013)},	/* Sierra Wireless Gobi 3000 Modem device (MC8355) */
1485	{QMI_GOBI_DEVICE(0x03f0, 0x371d)},	/* HP un2430 Mobile Broadband Module */
1486	{QMI_GOBI_DEVICE(0x1199, 0x9015)},	/* Sierra Wireless Gobi 3000 Modem device */
1487	{QMI_GOBI_DEVICE(0x1199, 0x9019)},	/* Sierra Wireless Gobi 3000 Modem device */
1488	{QMI_GOBI_DEVICE(0x1199, 0x901b)},	/* Sierra Wireless MC7770 */
1489	{QMI_GOBI_DEVICE(0x12d1, 0x14f1)},	/* Sony Gobi 3000 Composite */
1490	{QMI_GOBI_DEVICE(0x1410, 0xa021)},	/* Foxconn Gobi 3000 Modem device (Novatel E396) */
1491
1492	{ }					/* END */
1493};
1494MODULE_DEVICE_TABLE(usb, products);
1495
1496static bool quectel_ec20_detected(struct usb_interface *intf)
1497{
1498	struct usb_device *dev = interface_to_usbdev(intf);
1499
1500	if (dev->actconfig &&
1501	    le16_to_cpu(dev->descriptor.idVendor) == 0x05c6 &&
1502	    le16_to_cpu(dev->descriptor.idProduct) == 0x9215 &&
1503	    dev->actconfig->desc.bNumInterfaces == 5)
1504		return true;
1505
1506	return false;
1507}
1508
1509static int qmi_wwan_probe(struct usb_interface *intf,
1510			  const struct usb_device_id *prod)
1511{
1512	struct usb_device_id *id = (struct usb_device_id *)prod;
1513	struct usb_interface_descriptor *desc = &intf->cur_altsetting->desc;
1514
1515	/* Workaround to enable dynamic IDs.  This disables usbnet
1516	 * blacklisting functionality.  Which, if required, can be
1517	 * reimplemented here by using a magic "blacklist" value
1518	 * instead of 0 in the static device id table
1519	 */
1520	if (!id->driver_info) {
1521		dev_dbg(&intf->dev, "setting defaults for dynamic device id\n");
1522		id->driver_info = (unsigned long)&qmi_wwan_info;
1523	}
1524
1525	/* There are devices where the same interface number can be
1526	 * configured as different functions. We should only bind to
1527	 * vendor specific functions when matching on interface number
1528	 */
1529	if (id->match_flags & USB_DEVICE_ID_MATCH_INT_NUMBER &&
1530	    desc->bInterfaceClass != USB_CLASS_VENDOR_SPEC) {
1531		dev_dbg(&intf->dev,
1532			"Rejecting interface number match for class %02x\n",
1533			desc->bInterfaceClass);
1534		return -ENODEV;
1535	}
1536
1537	/* Quectel EC20 quirk where we've QMI on interface 4 instead of 0 */
1538	if (quectel_ec20_detected(intf) && desc->bInterfaceNumber == 0) {
1539		dev_dbg(&intf->dev, "Quectel EC20 quirk, skipping interface 0\n");
1540		return -ENODEV;
1541	}
1542
1543	/* Several Quectel modems supports dynamic interface configuration, so
1544	 * we need to match on class/subclass/protocol. These values are
1545	 * identical for the diagnostic- and QMI-interface, but bNumEndpoints is
1546	 * different. Ignore the current interface if the number of endpoints
1547	 * equals the number for the diag interface (two).
1548	 */
1549	if (desc->bNumEndpoints == 2)
1550		return -ENODEV;
1551
1552	return usbnet_probe(intf, id);
1553}
1554
1555static void qmi_wwan_disconnect(struct usb_interface *intf)
1556{
1557	struct usbnet *dev = usb_get_intfdata(intf);
1558	struct qmi_wwan_state *info;
1559	struct list_head *iter;
1560	struct net_device *ldev;
1561	LIST_HEAD(list);
1562
1563	/* called twice if separate control and data intf */
1564	if (!dev)
1565		return;
1566	info = (void *)&dev->data;
1567	if (info->flags & QMI_WWAN_FLAG_MUX) {
1568		if (!rtnl_trylock()) {
1569			restart_syscall();
1570			return;
1571		}
1572		rcu_read_lock();
1573		netdev_for_each_upper_dev_rcu(dev->net, ldev, iter)
1574			qmimux_unregister_device(ldev, &list);
1575		rcu_read_unlock();
1576		unregister_netdevice_many(&list);
1577		rtnl_unlock();
1578		info->flags &= ~QMI_WWAN_FLAG_MUX;
1579	}
1580	usbnet_disconnect(intf);
1581}
1582
1583static struct usb_driver qmi_wwan_driver = {
1584	.name		      = "qmi_wwan",
1585	.id_table	      = products,
1586	.probe		      = qmi_wwan_probe,
1587	.disconnect	      = qmi_wwan_disconnect,
1588	.suspend	      = qmi_wwan_suspend,
1589	.resume		      =	qmi_wwan_resume,
1590	.reset_resume         = qmi_wwan_resume,
1591	.supports_autosuspend = 1,
1592	.disable_hub_initiated_lpm = 1,
1593};
1594
1595module_usb_driver(qmi_wwan_driver);
1596
1597MODULE_AUTHOR("Bjørn Mork <bjorn@mork.no>");
1598MODULE_DESCRIPTION("Qualcomm MSM Interface (QMI) WWAN driver");
1599MODULE_LICENSE("GPL");