drivers/net/wireless/libertas/main.c

   1 /*
   2  * This file contains the major functions in WLAN
   3  * driver. It includes init, exit, open, close and main
   4  * thread etc..
   5  */
   6
   7 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
   8
   9 #include <linux/module.h>
  10 #include <linux/delay.h>
  11 #include <linux/etherdevice.h>
  12 #include <linux/hardirq.h>
  13 #include <linux/netdevice.h>
  14 #include <linux/if_arp.h>
  15 #include <linux/kthread.h>
  16 #include <linux/kfifo.h>
  17 #include <linux/slab.h>
  18 #include <net/cfg80211.h>
  19
  20 #include "host.h"
  21 #include "decl.h"
  22 #include "dev.h"
  23 #include "cfg.h"
  24 #include "debugfs.h"
  25 #include "cmd.h"
  26 #include "mesh.h"
  27
  28 #define DRIVER_RELEASE_VERSION "323.p0"
  29 const char lbs_driver_version[] = "COMM-USB8388-" DRIVER_RELEASE_VERSION
  30 #ifdef  DEBUG
  31     "-dbg"
  32 #endif
  33     "";
  34
  35
  36 /* Module parameters */
  37 unsigned int lbs_debug;
  38 EXPORT_SYMBOL_GPL(lbs_debug);
  39 module_param_named(libertas_debug, lbs_debug, int, 0644);
  40
  41 unsigned int lbs_disablemesh;
  42 EXPORT_SYMBOL_GPL(lbs_disablemesh);
  43 module_param_named(libertas_disablemesh, lbs_disablemesh, int, 0644);
  44
  45
  46 /*
  47  * This global structure is used to send the confirm_sleep command as
  48  * fast as possible down to the firmware.
  49  */
  50 struct cmd_confirm_sleep confirm_sleep;
  51
  52
  53 /*
  54  * the table to keep region code
  55  */
  56 u16 lbs_region_code_to_index[MRVDRV_MAX_REGION_CODE] =
  57     { 0x10, 0x20, 0x30, 0x31, 0x32, 0x40 };
  58
  59 /*
  60  * FW rate table.  FW refers to rates by their index in this table, not by the
  61  * rate value itself.  Values of 0x00 are
  62  * reserved positions.
  63  */
  64 static u8 fw_data_rates[MAX_RATES] =
  65     { 0x02, 0x04, 0x0B, 0x16, 0x00, 0x0C, 0x12,
  66       0x18, 0x24, 0x30, 0x48, 0x60, 0x6C, 0x00
  67 };
  68
  69 /**
  70  *  lbs_fw_index_to_data_rate - use index to get the data rate
  71  *
  72  *  @idx:       The index of data rate
  73  *  returns:    data rate or 0
  74  */
  75 u32 lbs_fw_index_to_data_rate(u8 idx)
  76 {
  77         if (idx >= sizeof(fw_data_rates))
  78                 idx = 0;
  79         return fw_data_rates[idx];
  80 }
  81
  82 /**
  83  *  lbs_data_rate_to_fw_index - use rate to get the index
  84  *
  85  *  @rate:      data rate
  86  *  returns:    index or 0
  87  */
  88 u8 lbs_data_rate_to_fw_index(u32 rate)
  89 {
  90         u8 i;
  91
  92         if (!rate)
  93                 return 0;
  94
  95         for (i = 0; i < sizeof(fw_data_rates); i++) {
  96                 if (rate == fw_data_rates[i])
  97                         return i;
  98         }
  99         return 0;
 100 }
 101
 102 int lbs_set_iface_type(struct lbs_private *priv, enum nl80211_iftype type)
 103 {
 104         int ret = 0;
 105
 106         switch (type) {
 107         case NL80211_IFTYPE_MONITOR:
 108                 ret = lbs_set_monitor_mode(priv, 1);
 109                 break;
 110         case NL80211_IFTYPE_STATION:
 111                 if (priv->wdev->iftype == NL80211_IFTYPE_MONITOR)
 112                         ret = lbs_set_monitor_mode(priv, 0);
 113                 if (!ret)
 114                         ret = lbs_set_snmp_mib(priv, SNMP_MIB_OID_BSS_TYPE, 1);
 115                 break;
 116         case NL80211_IFTYPE_ADHOC:
 117                 if (priv->wdev->iftype == NL80211_IFTYPE_MONITOR)
 118                         ret = lbs_set_monitor_mode(priv, 0);
 119                 if (!ret)
 120                         ret = lbs_set_snmp_mib(priv, SNMP_MIB_OID_BSS_TYPE, 2);
 121                 break;
 122         default:
 123                 ret = -ENOTSUPP;
 124         }
 125         return ret;
 126 }
 127
 128 int lbs_start_iface(struct lbs_private *priv)
 129 {
 130         struct cmd_ds_802_11_mac_address cmd;
 131         int ret;
 132
 133         if (priv->power_restore) {
 134                 ret = priv->power_restore(priv);
 135                 if (ret)
 136                         return ret;
 137         }
 138
 139         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
 140         cmd.action = cpu_to_le16(CMD_ACT_SET);
 141         memcpy(cmd.macadd, priv->current_addr, ETH_ALEN);
 142
 143         ret = lbs_cmd_with_response(priv, CMD_802_11_MAC_ADDRESS, &cmd);
 144         if (ret) {
 145                 lbs_deb_net("set MAC address failed\n");
 146                 goto err;
 147         }
 148
 149         ret = lbs_set_iface_type(priv, priv->wdev->iftype);
 150         if (ret) {
 151                 lbs_deb_net("set iface type failed\n");
 152                 goto err;
 153         }
 154
 155         lbs_update_channel(priv);
 156
 157         priv->iface_running = true;
 158         return 0;
 159
 160 err:
 161         if (priv->power_save)
 162                 priv->power_save(priv);
 163         return ret;
 164 }
 165
 166 /**
 167  *  lbs_dev_open - open the ethX interface
 168  *
 169  *  @dev:       A pointer to &net_device structure
 170  *  returns:    0 or -EBUSY if monitor mode active
 171  */
 172 static int lbs_dev_open(struct net_device *dev)
 173 {
 174         struct lbs_private *priv = dev->ml_priv;
 175         int ret = 0;
 176
 177         lbs_deb_enter(LBS_DEB_NET);
 178         if (!priv->iface_running) {
 179                 ret = lbs_start_iface(priv);
 180                 if (ret)
 181                         goto out;
 182         }
 183
 184         spin_lock_irq(&priv->driver_lock);
 185
 186         netif_carrier_off(dev);
 187
 188         if (!priv->tx_pending_len)
 189                 netif_wake_queue(dev);
 190
 191         spin_unlock_irq(&priv->driver_lock);
 192
 193 out:
 194         lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
 195         return ret;
 196 }
 197
 198 static bool lbs_command_queue_empty(struct lbs_private *priv)
 199 {
 200         unsigned long flags;
 201         bool ret;
 202         spin_lock_irqsave(&priv->driver_lock, flags);
 203         ret = priv->cur_cmd == NULL && list_empty(&priv->cmdpendingq);
 204         spin_unlock_irqrestore(&priv->driver_lock, flags);
 205         return ret;
 206 }
 207
 208 int lbs_stop_iface(struct lbs_private *priv)
 209 {
 210         unsigned long flags;
 211         int ret = 0;
 212
 213         lbs_deb_enter(LBS_DEB_MAIN);
 214
 215         spin_lock_irqsave(&priv->driver_lock, flags);
 216         priv->iface_running = false;
 217         kfree_skb(priv->currenttxskb);
 218         priv->currenttxskb = NULL;
 219         priv->tx_pending_len = 0;
 220         spin_unlock_irqrestore(&priv->driver_lock, flags);
 221
 222         cancel_work_sync(&priv->mcast_work);
 223         del_timer_sync(&priv->tx_lockup_timer);
 224
 225         /* Disable command processing, and wait for all commands to complete */
 226         lbs_deb_main("waiting for commands to complete\n");
 227         wait_event(priv->waitq, lbs_command_queue_empty(priv));
 228         lbs_deb_main("all commands completed\n");
 229
 230         if (priv->power_save)
 231                 ret = priv->power_save(priv);
 232
 233         lbs_deb_leave(LBS_DEB_MAIN);
 234         return ret;
 235 }
 236
 237 /**
 238  *  lbs_eth_stop - close the ethX interface
 239  *
 240  *  @dev:       A pointer to &net_device structure
 241  *  returns:    0
 242  */
 243 static int lbs_eth_stop(struct net_device *dev)
 244 {
 245         struct lbs_private *priv = dev->ml_priv;
 246
 247         lbs_deb_enter(LBS_DEB_NET);
 248
 249         if (priv->connect_status == LBS_CONNECTED)
 250                 lbs_disconnect(priv, WLAN_REASON_DEAUTH_LEAVING);
 251
 252         spin_lock_irq(&priv->driver_lock);
 253         netif_stop_queue(dev);
 254         spin_unlock_irq(&priv->driver_lock);
 255
 256         lbs_update_mcast(priv);
 257         cancel_delayed_work_sync(&priv->scan_work);
 258         if (priv->scan_req) {
 259                 cfg80211_scan_done(priv->scan_req, false);
 260                 priv->scan_req = NULL;
 261         }
 262
 263         netif_carrier_off(priv->dev);
 264
 265         if (!lbs_iface_active(priv))
 266                 lbs_stop_iface(priv);
 267
 268         lbs_deb_leave(LBS_DEB_NET);
 269         return 0;
 270 }
 271
 272 void lbs_host_to_card_done(struct lbs_private *priv)
 273 {
 274         unsigned long flags;
 275
 276         lbs_deb_enter(LBS_DEB_THREAD);
 277
 278         spin_lock_irqsave(&priv->driver_lock, flags);
 279         del_timer(&priv->tx_lockup_timer);
 280
 281         priv->dnld_sent = DNLD_RES_RECEIVED;
 282
 283         /* Wake main thread if commands are pending */
 284         if (!priv->cur_cmd || priv->tx_pending_len > 0) {
 285                 if (!priv->wakeup_dev_required)
 286                         wake_up(&priv->waitq);
 287         }
 288
 289         spin_unlock_irqrestore(&priv->driver_lock, flags);
 290         lbs_deb_leave(LBS_DEB_THREAD);
 291 }
 292 EXPORT_SYMBOL_GPL(lbs_host_to_card_done);
 293
 294 int lbs_set_mac_address(struct net_device *dev, void *addr)
 295 {
 296         int ret = 0;
 297         struct lbs_private *priv = dev->ml_priv;
 298         struct sockaddr *phwaddr = addr;
 299
 300         lbs_deb_enter(LBS_DEB_NET);
 301
 302         /*
 303          * Can only set MAC address when all interfaces are down, to be written
 304          * to the hardware when one of them is brought up.
 305          */
 306         if (lbs_iface_active(priv))
 307                 return -EBUSY;
 308
 309         /* In case it was called from the mesh device */
 310         dev = priv->dev;
 311
 312         memcpy(priv->current_addr, phwaddr->sa_data, ETH_ALEN);
 313         memcpy(dev->dev_addr, phwaddr->sa_data, ETH_ALEN);
 314         if (priv->mesh_dev)
 315                 memcpy(priv->mesh_dev->dev_addr, phwaddr->sa_data, ETH_ALEN);
 316
 317         lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
 318         return ret;
 319 }
 320
 321
 322 static inline int mac_in_list(unsigned char *list, int list_len,
 323                               unsigned char *mac)
 324 {
 325         while (list_len) {
 326                 if (!memcmp(list, mac, ETH_ALEN))
 327                         return 1;
 328                 list += ETH_ALEN;
 329                 list_len--;
 330         }
 331         return 0;
 332 }
 333
 334
 335 static int lbs_add_mcast_addrs(struct cmd_ds_mac_multicast_adr *cmd,
 336                                struct net_device *dev, int nr_addrs)
 337 {
 338         int i = nr_addrs;
 339         struct netdev_hw_addr *ha;
 340         int cnt;
 341
 342         if ((dev->flags & (IFF_UP|IFF_MULTICAST)) != (IFF_UP|IFF_MULTICAST))
 343                 return nr_addrs;
 344
 345         netif_addr_lock_bh(dev);
 346         cnt = netdev_mc_count(dev);
 347         netdev_for_each_mc_addr(ha, dev) {
 348                 if (mac_in_list(cmd->maclist, nr_addrs, ha->addr)) {
 349                         lbs_deb_net("mcast address %s:%pM skipped\n", dev->name,
 350                                     ha->addr);
 351                         cnt--;
 352                         continue;
 353                 }
 354
 355                 if (i == MRVDRV_MAX_MULTICAST_LIST_SIZE)
 356                         break;
 357                 memcpy(&cmd->maclist[6*i], ha->addr, ETH_ALEN);
 358                 lbs_deb_net("mcast address %s:%pM added to filter\n", dev->name,
 359                             ha->addr);
 360                 i++;
 361                 cnt--;
 362         }
 363         netif_addr_unlock_bh(dev);
 364         if (cnt)
 365                 return -EOVERFLOW;
 366
 367         return i;
 368 }
 369
 370 void lbs_update_mcast(struct lbs_private *priv)
 371 {
 372         struct cmd_ds_mac_multicast_adr mcast_cmd;
 373         int dev_flags = 0;
 374         int nr_addrs;
 375         int old_mac_control = priv->mac_control;
 376
 377         lbs_deb_enter(LBS_DEB_NET);
 378
 379         if (netif_running(priv->dev))
 380                 dev_flags |= priv->dev->flags;
 381         if (priv->mesh_dev && netif_running(priv->mesh_dev))
 382                 dev_flags |= priv->mesh_dev->flags;
 383
 384         if (dev_flags & IFF_PROMISC) {
 385                 priv->mac_control |= CMD_ACT_MAC_PROMISCUOUS_ENABLE;
 386                 priv->mac_control &= ~(CMD_ACT_MAC_ALL_MULTICAST_ENABLE |
 387                                        CMD_ACT_MAC_MULTICAST_ENABLE);
 388                 goto out_set_mac_control;
 389         } else if (dev_flags & IFF_ALLMULTI) {
 390         do_allmulti:
 391                 priv->mac_control |= CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
 392                 priv->mac_control &= ~(CMD_ACT_MAC_PROMISCUOUS_ENABLE |
 393                                        CMD_ACT_MAC_MULTICAST_ENABLE);
 394                 goto out_set_mac_control;
 395         }
 396
 397         /* Once for priv->dev, again for priv->mesh_dev if it exists */
 398         nr_addrs = lbs_add_mcast_addrs(&mcast_cmd, priv->dev, 0);
 399         if (nr_addrs >= 0 && priv->mesh_dev)
 400                 nr_addrs = lbs_add_mcast_addrs(&mcast_cmd, priv->mesh_dev, nr_addrs);
 401         if (nr_addrs < 0)
 402                 goto do_allmulti;
 403
 404         if (nr_addrs) {
 405                 int size = offsetof(struct cmd_ds_mac_multicast_adr,
 406                                     maclist[6*nr_addrs]);
 407
 408                 mcast_cmd.action = cpu_to_le16(CMD_ACT_SET);
 409                 mcast_cmd.hdr.size = cpu_to_le16(size);
 410                 mcast_cmd.nr_of_adrs = cpu_to_le16(nr_addrs);
 411
 412                 lbs_cmd_async(priv, CMD_MAC_MULTICAST_ADR, &mcast_cmd.hdr, size);
 413
 414                 priv->mac_control |= CMD_ACT_MAC_MULTICAST_ENABLE;
 415         } else
 416                 priv->mac_control &= ~CMD_ACT_MAC_MULTICAST_ENABLE;
 417
 418         priv->mac_control &= ~(CMD_ACT_MAC_PROMISCUOUS_ENABLE |
 419                                CMD_ACT_MAC_ALL_MULTICAST_ENABLE);
 420  out_set_mac_control:
 421         if (priv->mac_control != old_mac_control)
 422                 lbs_set_mac_control(priv);
 423
 424         lbs_deb_leave(LBS_DEB_NET);
 425 }
 426
 427 static void lbs_set_mcast_worker(struct work_struct *work)
 428 {
 429         struct lbs_private *priv = container_of(work, struct lbs_private, mcast_work);
 430         lbs_update_mcast(priv);
 431 }
 432
 433 void lbs_set_multicast_list(struct net_device *dev)
 434 {
 435         struct lbs_private *priv = dev->ml_priv;
 436
 437         schedule_work(&priv->mcast_work);
 438 }
 439
 440 /**
 441  *  lbs_thread - handles the major jobs in the LBS driver.
 442  *  It handles all events generated by firmware, RX data received
 443  *  from firmware and TX data sent from kernel.
 444  *
 445  *  @data:      A pointer to &lbs_thread structure
 446  *  returns:    0
 447  */
 448 static int lbs_thread(void *data)
 449 {
 450         struct net_device *dev = data;
 451         struct lbs_private *priv = dev->ml_priv;
 452         wait_queue_t wait;
 453
 454         lbs_deb_enter(LBS_DEB_THREAD);
 455
 456         init_waitqueue_entry(&wait, current);
 457
 458         for (;;) {
 459                 int shouldsleep;
 460                 u8 resp_idx;
 461
 462                 lbs_deb_thread("1: currenttxskb %p, dnld_sent %d\n",
 463                                 priv->currenttxskb, priv->dnld_sent);
 464
 465                 add_wait_queue(&priv->waitq, &wait);
 466                 set_current_state(TASK_INTERRUPTIBLE);
 467                 spin_lock_irq(&priv->driver_lock);
 468
 469                 if (kthread_should_stop())
 470                         shouldsleep = 0;        /* Bye */
 471                 else if (priv->surpriseremoved)
 472                         shouldsleep = 1;        /* We need to wait until we're _told_ to die */
 473                 else if (priv->psstate == PS_STATE_SLEEP)
 474                         shouldsleep = 1;        /* Sleep mode. Nothing we can do till it wakes */
 475                 else if (priv->cmd_timed_out)
 476                         shouldsleep = 0;        /* Command timed out. Recover */
 477                 else if (!priv->fw_ready)
 478                         shouldsleep = 1;        /* Firmware not ready. We're waiting for it */
 479                 else if (priv->dnld_sent)
 480                         shouldsleep = 1;        /* Something is en route to the device already */
 481                 else if (priv->tx_pending_len > 0)
 482                         shouldsleep = 0;        /* We've a packet to send */
 483                 else if (priv->resp_len[priv->resp_idx])
 484                         shouldsleep = 0;        /* We have a command response */
 485                 else if (priv->cur_cmd)
 486                         shouldsleep = 1;        /* Can't send a command; one already running */
 487                 else if (!list_empty(&priv->cmdpendingq) &&
 488                                         !(priv->wakeup_dev_required))
 489                         shouldsleep = 0;        /* We have a command to send */
 490                 else if (kfifo_len(&priv->event_fifo))
 491                         shouldsleep = 0;        /* We have an event to process */
 492                 else
 493                         shouldsleep = 1;        /* No command */
 494
 495                 if (shouldsleep) {
 496                         lbs_deb_thread("sleeping, connect_status %d, "
 497                                 "psmode %d, psstate %d\n",
 498                                 priv->connect_status,
 499                                 priv->psmode, priv->psstate);
 500                         spin_unlock_irq(&priv->driver_lock);
 501                         schedule();
 502                 } else
 503                         spin_unlock_irq(&priv->driver_lock);
 504
 505                 lbs_deb_thread("2: currenttxskb %p, dnld_send %d\n",
 506                                priv->currenttxskb, priv->dnld_sent);
 507
 508                 set_current_state(TASK_RUNNING);
 509                 remove_wait_queue(&priv->waitq, &wait);
 510
 511                 lbs_deb_thread("3: currenttxskb %p, dnld_sent %d\n",
 512                                priv->currenttxskb, priv->dnld_sent);
 513
 514                 if (kthread_should_stop()) {
 515                         lbs_deb_thread("break from main thread\n");
 516                         break;
 517                 }
 518
 519                 if (priv->surpriseremoved) {
 520                         lbs_deb_thread("adapter removed; waiting to die...\n");
 521                         continue;
 522                 }
 523
 524                 lbs_deb_thread("4: currenttxskb %p, dnld_sent %d\n",
 525                        priv->currenttxskb, priv->dnld_sent);
 526
 527                 /* Process any pending command response */
 528                 spin_lock_irq(&priv->driver_lock);
 529                 resp_idx = priv->resp_idx;
 530                 if (priv->resp_len[resp_idx]) {
 531                         spin_unlock_irq(&priv->driver_lock);
 532                         lbs_process_command_response(priv,
 533                                 priv->resp_buf[resp_idx],
 534                                 priv->resp_len[resp_idx]);
 535                         spin_lock_irq(&priv->driver_lock);
 536                         priv->resp_len[resp_idx] = 0;
 537                 }
 538                 spin_unlock_irq(&priv->driver_lock);
 539
 540                 /* Process hardware events, e.g. card removed, link lost */
 541                 spin_lock_irq(&priv->driver_lock);
 542                 while (kfifo_len(&priv->event_fifo)) {
 543                         u32 event;
 544
 545                         if (kfifo_out(&priv->event_fifo,
 546                                 (unsigned char *) &event, sizeof(event)) !=
 547                                 sizeof(event))
 548                                         break;
 549                         spin_unlock_irq(&priv->driver_lock);
 550                         lbs_process_event(priv, event);
 551                         spin_lock_irq(&priv->driver_lock);
 552                 }
 553                 spin_unlock_irq(&priv->driver_lock);
 554
 555                 if (priv->wakeup_dev_required) {
 556                         lbs_deb_thread("Waking up device...\n");
 557                         /* Wake up device */
 558                         if (priv->exit_deep_sleep(priv))
 559                                 lbs_deb_thread("Wakeup device failed\n");
 560                         continue;
 561                 }
 562
 563                 /* command timeout stuff */
 564                 if (priv->cmd_timed_out && priv->cur_cmd) {
 565                         struct cmd_ctrl_node *cmdnode = priv->cur_cmd;
 566
 567                         netdev_info(dev, "Timeout submitting command 0x%04x\n",
 568                                     le16_to_cpu(cmdnode->cmdbuf->command));
 569                         lbs_complete_command(priv, cmdnode, -ETIMEDOUT);
 570                         if (priv->reset_card)
 571                                 priv->reset_card(priv);
 572                 }
 573                 priv->cmd_timed_out = 0;
 574
 575                 if (!priv->fw_ready)
 576                         continue;
 577
 578                 /* Check if we need to confirm Sleep Request received previously */
 579                 if (priv->psstate == PS_STATE_PRE_SLEEP &&
 580                     !priv->dnld_sent && !priv->cur_cmd) {
 581                         if (priv->connect_status == LBS_CONNECTED) {
 582                                 lbs_deb_thread("pre-sleep, currenttxskb %p, "
 583                                         "dnld_sent %d, cur_cmd %p\n",
 584                                         priv->currenttxskb, priv->dnld_sent,
 585                                         priv->cur_cmd);
 586
 587                                 lbs_ps_confirm_sleep(priv);
 588                         } else {
 589                                 /* workaround for firmware sending
 590                                  * deauth/linkloss event immediately
 591                                  * after sleep request; remove this
 592                                  * after firmware fixes it
 593                                  */
 594                                 priv->psstate = PS_STATE_AWAKE;
 595                                 netdev_alert(dev,
 596                                              "ignore PS_SleepConfirm in non-connected state\n");
 597                         }
 598                 }
 599
 600                 /* The PS state is changed during processing of Sleep Request
 601                  * event above
 602                  */
 603                 if ((priv->psstate == PS_STATE_SLEEP) ||
 604                     (priv->psstate == PS_STATE_PRE_SLEEP))
 605                         continue;
 606
 607                 if (priv->is_deep_sleep)
 608                         continue;
 609
 610                 /* Execute the next command */
 611                 if (!priv->dnld_sent && !priv->cur_cmd)
 612                         lbs_execute_next_command(priv);
 613
 614                 spin_lock_irq(&priv->driver_lock);
 615                 if (!priv->dnld_sent && priv->tx_pending_len > 0) {
 616                         int ret = priv->hw_host_to_card(priv, MVMS_DAT,
 617                                                         priv->tx_pending_buf,
 618                                                         priv->tx_pending_len);
 619                         if (ret) {
 620                                 lbs_deb_tx("host_to_card failed %d\n", ret);
 621                                 priv->dnld_sent = DNLD_RES_RECEIVED;
 622                         } else {
 623                                 mod_timer(&priv->tx_lockup_timer,
 624                                           jiffies + (HZ * 5));
 625                         }
 626                         priv->tx_pending_len = 0;
 627                         if (!priv->currenttxskb) {
 628                                 /* We can wake the queues immediately if we aren't
 629                                    waiting for TX feedback */
 630                                 if (priv->connect_status == LBS_CONNECTED)
 631                                         netif_wake_queue(priv->dev);
 632                                 if (priv->mesh_dev &&
 633                                     netif_running(priv->mesh_dev))
 634                                         netif_wake_queue(priv->mesh_dev);
 635                         }
 636                 }
 637                 spin_unlock_irq(&priv->driver_lock);
 638         }
 639
 640         del_timer(&priv->command_timer);
 641         del_timer(&priv->tx_lockup_timer);
 642         del_timer(&priv->auto_deepsleep_timer);
 643
 644         lbs_deb_leave(LBS_DEB_THREAD);
 645         return 0;
 646 }
 647
 648 /**
 649  * lbs_setup_firmware - gets the HW spec from the firmware and sets
 650  *        some basic parameters
 651  *
 652  *  @priv:      A pointer to &struct lbs_private structure
 653  *  returns:    0 or -1
 654  */
 655 static int lbs_setup_firmware(struct lbs_private *priv)
 656 {
 657         int ret = -1;
 658         s16 curlevel = 0, minlevel = 0, maxlevel = 0;
 659
 660         lbs_deb_enter(LBS_DEB_FW);
 661
 662         /* Read MAC address from firmware */
 663         memset(priv->current_addr, 0xff, ETH_ALEN);
 664         ret = lbs_update_hw_spec(priv);
 665         if (ret)
 666                 goto done;
 667
 668         /* Read power levels if available */
 669         ret = lbs_get_tx_power(priv, &curlevel, &minlevel, &maxlevel);
 670         if (ret == 0) {
 671                 priv->txpower_cur = curlevel;
 672                 priv->txpower_min = minlevel;
 673                 priv->txpower_max = maxlevel;
 674         }
 675
 676         /* Send cmd to FW to enable 11D function */
 677         ret = lbs_set_snmp_mib(priv, SNMP_MIB_OID_11D_ENABLE, 1);
 678
 679         lbs_set_mac_control(priv);
 680 done:
 681         lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
 682         return ret;
 683 }
 684
 685 int lbs_suspend(struct lbs_private *priv)
 686 {
 687         int ret;
 688
 689         lbs_deb_enter(LBS_DEB_FW);
 690
 691         if (priv->is_deep_sleep) {
 692                 ret = lbs_set_deep_sleep(priv, 0);
 693                 if (ret) {
 694                         netdev_err(priv->dev,
 695                                    "deep sleep cancellation failed: %d\n", ret);
 696                         return ret;
 697                 }
 698                 priv->deep_sleep_required = 1;
 699         }
 700
 701         ret = lbs_set_host_sleep(priv, 1);
 702
 703         netif_device_detach(priv->dev);
 704         if (priv->mesh_dev)
 705                 netif_device_detach(priv->mesh_dev);
 706
 707         lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
 708         return ret;
 709 }
 710 EXPORT_SYMBOL_GPL(lbs_suspend);
 711
 712 int lbs_resume(struct lbs_private *priv)
 713 {
 714         int ret;
 715
 716         lbs_deb_enter(LBS_DEB_FW);
 717
 718         ret = lbs_set_host_sleep(priv, 0);
 719
 720         netif_device_attach(priv->dev);
 721         if (priv->mesh_dev)
 722                 netif_device_attach(priv->mesh_dev);
 723
 724         if (priv->deep_sleep_required) {
 725                 priv->deep_sleep_required = 0;
 726                 ret = lbs_set_deep_sleep(priv, 1);
 727                 if (ret)
 728                         netdev_err(priv->dev,
 729                                    "deep sleep activation failed: %d\n", ret);
 730         }
 731
 732         if (priv->setup_fw_on_resume)
 733                 ret = lbs_setup_firmware(priv);
 734
 735         lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
 736         return ret;
 737 }
 738 EXPORT_SYMBOL_GPL(lbs_resume);
 739
 740 /**
 741  * lbs_cmd_timeout_handler - handles the timeout of command sending.
 742  * It will re-send the same command again.
 743  *
 744  * @data: &struct lbs_private pointer
 745  */
 746 static void lbs_cmd_timeout_handler(unsigned long data)
 747 {
 748         struct lbs_private *priv = (struct lbs_private *)data;
 749         unsigned long flags;
 750
 751         lbs_deb_enter(LBS_DEB_CMD);
 752         spin_lock_irqsave(&priv->driver_lock, flags);
 753
 754         if (!priv->cur_cmd)
 755                 goto out;
 756
 757         netdev_info(priv->dev, "command 0x%04x timed out\n",
 758                     le16_to_cpu(priv->cur_cmd->cmdbuf->command));
 759
 760         priv->cmd_timed_out = 1;
 761
 762         /*
 763          * If the device didn't even acknowledge the command, reset the state
 764          * so that we don't block all future commands due to this one timeout.
 765          */
 766         if (priv->dnld_sent == DNLD_CMD_SENT)
 767                 priv->dnld_sent = DNLD_RES_RECEIVED;
 768
 769         wake_up(&priv->waitq);
 770 out:
 771         spin_unlock_irqrestore(&priv->driver_lock, flags);
 772         lbs_deb_leave(LBS_DEB_CMD);
 773 }
 774
 775 /**
 776  * lbs_tx_lockup_handler - handles the timeout of the passing of TX frames
 777  * to the hardware. This is known to frequently happen with SD8686 when
 778  * waking up after a Wake-on-WLAN-triggered resume.
 779  *
 780  * @data: &struct lbs_private pointer
 781  */
 782 static void lbs_tx_lockup_handler(unsigned long data)
 783 {
 784         struct lbs_private *priv = (struct lbs_private *)data;
 785         unsigned long flags;
 786
 787         lbs_deb_enter(LBS_DEB_TX);
 788         spin_lock_irqsave(&priv->driver_lock, flags);
 789
 790         netdev_info(priv->dev, "TX lockup detected\n");
 791         if (priv->reset_card)
 792                 priv->reset_card(priv);
 793
 794         priv->dnld_sent = DNLD_RES_RECEIVED;
 795         wake_up_interruptible(&priv->waitq);
 796
 797         spin_unlock_irqrestore(&priv->driver_lock, flags);
 798         lbs_deb_leave(LBS_DEB_TX);
 799 }
 800
 801 /**
 802  * auto_deepsleep_timer_fn - put the device back to deep sleep mode when
 803  * timer expires and no activity (command, event, data etc.) is detected.
 804  * @data:       &struct lbs_private pointer
 805  * returns:     N/A
 806  */
 807 static void auto_deepsleep_timer_fn(unsigned long data)
 808 {
 809         struct lbs_private *priv = (struct lbs_private *)data;
 810
 811         lbs_deb_enter(LBS_DEB_CMD);
 812
 813         if (priv->is_activity_detected) {
 814                 priv->is_activity_detected = 0;
 815         } else {
 816                 if (priv->is_auto_deep_sleep_enabled &&
 817                     (!priv->wakeup_dev_required) &&
 818                     (priv->connect_status != LBS_CONNECTED)) {
 819                         struct cmd_header cmd;
 820
 821                         lbs_deb_main("Entering auto deep sleep mode...\n");
 822                         memset(&cmd, 0, sizeof(cmd));
 823                         cmd.size = cpu_to_le16(sizeof(cmd));
 824                         lbs_cmd_async(priv, CMD_802_11_DEEP_SLEEP, &cmd,
 825                                         sizeof(cmd));
 826                 }
 827         }
 828         mod_timer(&priv->auto_deepsleep_timer , jiffies +
 829                                 (priv->auto_deep_sleep_timeout * HZ)/1000);
 830         lbs_deb_leave(LBS_DEB_CMD);
 831 }
 832
 833 int lbs_enter_auto_deep_sleep(struct lbs_private *priv)
 834 {
 835         lbs_deb_enter(LBS_DEB_SDIO);
 836
 837         priv->is_auto_deep_sleep_enabled = 1;
 838         if (priv->is_deep_sleep)
 839                 priv->wakeup_dev_required = 1;
 840         mod_timer(&priv->auto_deepsleep_timer ,
 841                         jiffies + (priv->auto_deep_sleep_timeout * HZ)/1000);
 842
 843         lbs_deb_leave(LBS_DEB_SDIO);
 844         return 0;
 845 }
 846
 847 int lbs_exit_auto_deep_sleep(struct lbs_private *priv)
 848 {
 849         lbs_deb_enter(LBS_DEB_SDIO);
 850
 851         priv->is_auto_deep_sleep_enabled = 0;
 852         priv->auto_deep_sleep_timeout = 0;
 853         del_timer(&priv->auto_deepsleep_timer);
 854
 855         lbs_deb_leave(LBS_DEB_SDIO);
 856         return 0;
 857 }
 858
 859 static int lbs_init_adapter(struct lbs_private *priv)
 860 {
 861         int ret;
 862
 863         lbs_deb_enter(LBS_DEB_MAIN);
 864
 865         memset(priv->current_addr, 0xff, ETH_ALEN);
 866
 867         priv->connect_status = LBS_DISCONNECTED;
 868         priv->channel = DEFAULT_AD_HOC_CHANNEL;
 869         priv->mac_control = CMD_ACT_MAC_RX_ON | CMD_ACT_MAC_TX_ON;
 870         priv->radio_on = 1;
 871         priv->psmode = LBS802_11POWERMODECAM;
 872         priv->psstate = PS_STATE_FULL_POWER;
 873         priv->is_deep_sleep = 0;
 874         priv->is_auto_deep_sleep_enabled = 0;
 875         priv->deep_sleep_required = 0;
 876         priv->wakeup_dev_required = 0;
 877         init_waitqueue_head(&priv->ds_awake_q);
 878         init_waitqueue_head(&priv->scan_q);
 879         priv->authtype_auto = 1;
 880         priv->is_host_sleep_configured = 0;
 881         priv->is_host_sleep_activated = 0;
 882         init_waitqueue_head(&priv->host_sleep_q);
 883         mutex_init(&priv->lock);
 884
 885         setup_timer(&priv->command_timer, lbs_cmd_timeout_handler,
 886                 (unsigned long)priv);
 887         setup_timer(&priv->tx_lockup_timer, lbs_tx_lockup_handler,
 888                 (unsigned long)priv);
 889         setup_timer(&priv->auto_deepsleep_timer, auto_deepsleep_timer_fn,
 890                         (unsigned long)priv);
 891
 892         INIT_LIST_HEAD(&priv->cmdfreeq);
 893         INIT_LIST_HEAD(&priv->cmdpendingq);
 894
 895         spin_lock_init(&priv->driver_lock);
 896
 897         /* Allocate the command buffers */
 898         if (lbs_allocate_cmd_buffer(priv)) {
 899                 pr_err("Out of memory allocating command buffers\n");
 900                 ret = -ENOMEM;
 901                 goto out;
 902         }
 903         priv->resp_idx = 0;
 904         priv->resp_len[0] = priv->resp_len[1] = 0;
 905
 906         /* Create the event FIFO */
 907         ret = kfifo_alloc(&priv->event_fifo, sizeof(u32) * 16, GFP_KERNEL);
 908         if (ret) {
 909                 pr_err("Out of memory allocating event FIFO buffer\n");
 910                 goto out;
 911         }
 912
 913 out:
 914         lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
 915
 916         return ret;
 917 }
 918
 919 static void lbs_free_adapter(struct lbs_private *priv)
 920 {
 921         lbs_deb_enter(LBS_DEB_MAIN);
 922
 923         lbs_free_cmd_buffer(priv);
 924         kfifo_free(&priv->event_fifo);
 925         del_timer(&priv->command_timer);
 926         del_timer(&priv->tx_lockup_timer);
 927         del_timer(&priv->auto_deepsleep_timer);
 928
 929         lbs_deb_leave(LBS_DEB_MAIN);
 930 }
 931
 932 static const struct net_device_ops lbs_netdev_ops = {
 933         .ndo_open               = lbs_dev_open,
 934         .ndo_stop               = lbs_eth_stop,
 935         .ndo_start_xmit         = lbs_hard_start_xmit,
 936         .ndo_set_mac_address    = lbs_set_mac_address,
 937         .ndo_set_rx_mode        = lbs_set_multicast_list,
 938         .ndo_change_mtu         = eth_change_mtu,
 939         .ndo_validate_addr      = eth_validate_addr,
 940 };
 941
 942 /**
 943  * lbs_add_card - adds the card. It will probe the
 944  * card, allocate the lbs_priv and initialize the device.
 945  *
 946  * @card:       A pointer to card
 947  * @dmdev:      A pointer to &struct device
 948  * returns:     A pointer to &struct lbs_private structure
 949  */
 950 struct lbs_private *lbs_add_card(void *card, struct device *dmdev)
 951 {
 952         struct net_device *dev;
 953         struct wireless_dev *wdev;
 954         struct lbs_private *priv = NULL;
 955
 956         lbs_deb_enter(LBS_DEB_MAIN);
 957
 958         /* Allocate an Ethernet device and register it */
 959         wdev = lbs_cfg_alloc(dmdev);
 960         if (IS_ERR(wdev)) {
 961                 pr_err("cfg80211 init failed\n");
 962                 goto done;
 963         }
 964
 965         wdev->iftype = NL80211_IFTYPE_STATION;
 966         priv = wdev_priv(wdev);
 967         priv->wdev = wdev;
 968
 969         if (lbs_init_adapter(priv)) {
 970                 pr_err("failed to initialize adapter structure\n");
 971                 goto err_wdev;
 972         }
 973
 974         dev = alloc_netdev(0, "wlan%d", ether_setup);
 975         if (!dev) {
 976                 dev_err(dmdev, "no memory for network device instance\n");
 977                 goto err_adapter;
 978         }
 979
 980         dev->ieee80211_ptr = wdev;
 981         dev->ml_priv = priv;
 982         SET_NETDEV_DEV(dev, dmdev);
 983         wdev->netdev = dev;
 984         priv->dev = dev;
 985
 986         dev->netdev_ops = &lbs_netdev_ops;
 987         dev->watchdog_timeo = 5 * HZ;
 988         dev->ethtool_ops = &lbs_ethtool_ops;
 989         dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
 990
 991         priv->card = card;
 992
 993         strcpy(dev->name, "wlan%d");
 994
 995         lbs_deb_thread("Starting main thread...\n");
 996         init_waitqueue_head(&priv->waitq);
 997         priv->main_thread = kthread_run(lbs_thread, dev, "lbs_main");
 998         if (IS_ERR(priv->main_thread)) {
 999                 lbs_deb_thread("Error creating main thread.\n");
1000                 goto err_ndev;
1001         }
1002
1003         priv->work_thread = create_singlethread_workqueue("lbs_worker");
1004         INIT_WORK(&priv->mcast_work, lbs_set_mcast_worker);
1005
1006         priv->wol_criteria = EHS_REMOVE_WAKEUP;
1007         priv->wol_gpio = 0xff;
1008         priv->wol_gap = 20;
1009         priv->ehs_remove_supported = true;
1010
1011         goto done;
1012
1013  err_ndev:
1014         free_netdev(dev);
1015
1016  err_adapter:
1017         lbs_free_adapter(priv);
1018
1019  err_wdev:
1020         lbs_cfg_free(priv);
1021
1022         priv = NULL;
1023
1024 done:
1025         lbs_deb_leave_args(LBS_DEB_MAIN, "priv %p", priv);
1026         return priv;
1027 }
1028 EXPORT_SYMBOL_GPL(lbs_add_card);
1029
1030
1031 void lbs_remove_card(struct lbs_private *priv)
1032 {
1033         struct net_device *dev = priv->dev;
1034
1035         lbs_deb_enter(LBS_DEB_MAIN);
1036
1037         lbs_remove_mesh(priv);
1038         lbs_scan_deinit(priv);
1039
1040         /* worker thread destruction blocks on the in-flight command which
1041          * should have been cleared already in lbs_stop_card().
1042          */
1043         lbs_deb_main("destroying worker thread\n");
1044         destroy_workqueue(priv->work_thread);
1045         lbs_deb_main("done destroying worker thread\n");
1046
1047         if (priv->psmode == LBS802_11POWERMODEMAX_PSP) {
1048                 priv->psmode = LBS802_11POWERMODECAM;
1049                 lbs_set_ps_mode(priv, PS_MODE_ACTION_EXIT_PS, true);
1050         }
1051
1052         if (priv->is_deep_sleep) {
1053                 priv->is_deep_sleep = 0;
1054                 wake_up_interruptible(&priv->ds_awake_q);
1055         }
1056
1057         priv->is_host_sleep_configured = 0;
1058         priv->is_host_sleep_activated = 0;
1059         wake_up_interruptible(&priv->host_sleep_q);
1060
1061         /* Stop the thread servicing the interrupts */
1062         priv->surpriseremoved = 1;
1063         kthread_stop(priv->main_thread);
1064
1065         lbs_free_adapter(priv);
1066         lbs_cfg_free(priv);
1067         free_netdev(dev);
1068
1069         lbs_deb_leave(LBS_DEB_MAIN);
1070 }
1071 EXPORT_SYMBOL_GPL(lbs_remove_card);
1072
1073
1074 int lbs_rtap_supported(struct lbs_private *priv)
1075 {
1076         if (MRVL_FW_MAJOR_REV(priv->fwrelease) == MRVL_FW_V5)
1077                 return 1;
1078
1079         /* newer firmware use a capability mask */
1080         return ((MRVL_FW_MAJOR_REV(priv->fwrelease) >= MRVL_FW_V10) &&
1081                 (priv->fwcapinfo & MESH_CAPINFO_ENABLE_MASK));
1082 }
1083
1084
1085 int lbs_start_card(struct lbs_private *priv)
1086 {
1087         struct net_device *dev = priv->dev;
1088         int ret = -1;
1089
1090         lbs_deb_enter(LBS_DEB_MAIN);
1091
1092         /* poke the firmware */
1093         ret = lbs_setup_firmware(priv);
1094         if (ret)
1095                 goto done;
1096
1097         if (!lbs_disablemesh)
1098                 lbs_init_mesh(priv);
1099         else
1100                 pr_info("%s: mesh disabled\n", dev->name);
1101
1102         if (lbs_cfg_register(priv)) {
1103                 pr_err("cannot register device\n");
1104                 goto done;
1105         }
1106
1107         if (lbs_mesh_activated(priv))
1108                 lbs_start_mesh(priv);
1109
1110         lbs_debugfs_init_one(priv, dev);
1111
1112         netdev_info(dev, "Marvell WLAN 802.11 adapter\n");
1113
1114         ret = 0;
1115
1116 done:
1117         lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1118         return ret;
1119 }
1120 EXPORT_SYMBOL_GPL(lbs_start_card);
1121
1122
1123 void lbs_stop_card(struct lbs_private *priv)
1124 {
1125         struct net_device *dev;
1126
1127         lbs_deb_enter(LBS_DEB_MAIN);
1128
1129         if (!priv)
1130                 goto out;
1131         dev = priv->dev;
1132
1133         netif_stop_queue(dev);
1134         netif_carrier_off(dev);
1135
1136         lbs_debugfs_remove_one(priv);
1137         lbs_deinit_mesh(priv);
1138         unregister_netdev(dev);
1139
1140 out:
1141         lbs_deb_leave(LBS_DEB_MAIN);
1142 }
1143 EXPORT_SYMBOL_GPL(lbs_stop_card);
1144
1145
1146 void lbs_queue_event(struct lbs_private *priv, u32 event)
1147 {
1148         unsigned long flags;
1149
1150         lbs_deb_enter(LBS_DEB_THREAD);
1151         spin_lock_irqsave(&priv->driver_lock, flags);
1152
1153         if (priv->psstate == PS_STATE_SLEEP)
1154                 priv->psstate = PS_STATE_AWAKE;
1155
1156         kfifo_in(&priv->event_fifo, (unsigned char *) &event, sizeof(u32));
1157
1158         wake_up(&priv->waitq);
1159
1160         spin_unlock_irqrestore(&priv->driver_lock, flags);
1161         lbs_deb_leave(LBS_DEB_THREAD);
1162 }
1163 EXPORT_SYMBOL_GPL(lbs_queue_event);
1164
1165 void lbs_notify_command_response(struct lbs_private *priv, u8 resp_idx)
1166 {
1167         lbs_deb_enter(LBS_DEB_THREAD);
1168
1169         if (priv->psstate == PS_STATE_SLEEP)
1170                 priv->psstate = PS_STATE_AWAKE;
1171
1172         /* Swap buffers by flipping the response index */
1173         BUG_ON(resp_idx > 1);
1174         priv->resp_idx = resp_idx;
1175
1176         wake_up(&priv->waitq);
1177
1178         lbs_deb_leave(LBS_DEB_THREAD);
1179 }
1180 EXPORT_SYMBOL_GPL(lbs_notify_command_response);
1181
1182 /**
1183  *  lbs_get_firmware - Retrieves two-stage firmware
1184  *
1185  *  @dev:       A pointer to &device structure
1186  *  @user_helper: User-defined helper firmware file
1187  *  @user_mainfw: User-defined main firmware file
1188  *  @card_model: Bus-specific card model ID used to filter firmware table
1189  *              elements
1190  *  @fw_table:  Table of firmware file names and device model numbers
1191  *              terminated by an entry with a NULL helper name
1192  *  @helper:    On success, the helper firmware; caller must free
1193  *  @mainfw:    On success, the main firmware; caller must free
1194  *
1195  *  returns:            0 on success, non-zero on failure
1196  */
1197 int lbs_get_firmware(struct device *dev, const char *user_helper,
1198                         const char *user_mainfw, u32 card_model,
1199                         const struct lbs_fw_table *fw_table,
1200                         const struct firmware **helper,
1201                         const struct firmware **mainfw)
1202 {
1203         const struct lbs_fw_table *iter;
1204         int ret;
1205
1206         BUG_ON(helper == NULL);
1207         BUG_ON(mainfw == NULL);
1208
1209         /* Try user-specified firmware first */
1210         if (user_helper) {
1211                 ret = request_firmware(helper, user_helper, dev);
1212                 if (ret) {
1213                         dev_err(dev, "couldn't find helper firmware %s\n",
1214                                 user_helper);
1215                         goto fail;
1216                 }
1217         }
1218         if (user_mainfw) {
1219                 ret = request_firmware(mainfw, user_mainfw, dev);
1220                 if (ret) {
1221                         dev_err(dev, "couldn't find main firmware %s\n",
1222                                 user_mainfw);
1223                         goto fail;
1224                 }
1225         }
1226
1227         if (*helper && *mainfw)
1228                 return 0;
1229
1230         /* Otherwise search for firmware to use.  If neither the helper or
1231          * the main firmware were specified by the user, then we need to
1232          * make sure that found helper & main are from the same entry in
1233          * fw_table.
1234          */
1235         iter = fw_table;
1236         while (iter && iter->helper) {
1237                 if (iter->model != card_model)
1238                         goto next;
1239
1240                 if (*helper == NULL) {
1241                         ret = request_firmware(helper, iter->helper, dev);
1242                         if (ret)
1243                                 goto next;
1244
1245                         /* If the device has one-stage firmware (ie cf8305) and
1246                          * we've got it then we don't need to bother with the
1247                          * main firmware.
1248                          */
1249                         if (iter->fwname == NULL)
1250                                 return 0;
1251                 }
1252
1253                 if (*mainfw == NULL) {
1254                         ret = request_firmware(mainfw, iter->fwname, dev);
1255                         if (ret && !user_helper) {
1256                                 /* Clear the helper if it wasn't user-specified
1257                                  * and the main firmware load failed, to ensure
1258                                  * we don't have mismatched firmware pairs.
1259                                  */
1260                                 release_firmware(*helper);
1261                                 *helper = NULL;
1262                         }
1263                 }
1264
1265                 if (*helper && *mainfw)
1266                         return 0;
1267
1268   next:
1269                 iter++;
1270         }
1271
1272   fail:
1273         /* Failed */
1274         if (*helper) {
1275                 release_firmware(*helper);
1276                 *helper = NULL;
1277         }
1278         if (*mainfw) {
1279                 release_firmware(*mainfw);
1280                 *mainfw = NULL;
1281         }
1282
1283         return -ENOENT;
1284 }
1285 EXPORT_SYMBOL_GPL(lbs_get_firmware);
1286
1287 static int __init lbs_init_module(void)
1288 {
1289         lbs_deb_enter(LBS_DEB_MAIN);
1290         memset(&confirm_sleep, 0, sizeof(confirm_sleep));
1291         confirm_sleep.hdr.command = cpu_to_le16(CMD_802_11_PS_MODE);
1292         confirm_sleep.hdr.size = cpu_to_le16(sizeof(confirm_sleep));
1293         confirm_sleep.action = cpu_to_le16(PS_MODE_ACTION_SLEEP_CONFIRMED);
1294         lbs_debugfs_init();
1295         lbs_deb_leave(LBS_DEB_MAIN);
1296         return 0;
1297 }
1298
1299 static void __exit lbs_exit_module(void)
1300 {
1301         lbs_deb_enter(LBS_DEB_MAIN);
1302         lbs_debugfs_remove();
1303         lbs_deb_leave(LBS_DEB_MAIN);
1304 }
1305
1306 module_init(lbs_init_module);
1307 module_exit(lbs_exit_module);
1308
1309 MODULE_DESCRIPTION("Libertas WLAN Driver Library");
1310 MODULE_AUTHOR("Marvell International Ltd.");
1311 MODULE_LICENSE("GPL");