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