drivers/net/wireless/marvell/mwifiex/main.c

   1 /*
   2  * Marvell Wireless LAN device driver: major functions
   3  *
   4  * Copyright (C) 2011-2014, Marvell International Ltd.
   5  *
   6  * This software file (the "File") is distributed by Marvell International
   7  * Ltd. under the terms of the GNU General Public License Version 2, June 1991
   8  * (the "License").  You may use, redistribute and/or modify this File in
   9  * accordance with the terms and conditions of the License, a copy of which
  10  * is available by writing to the Free Software Foundation, Inc.,
  11  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
  12  * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
  13  *
  14  * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
  15  * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
  16  * ARE EXPRESSLY DISCLAIMED.  The License provides additional details about
  17  * this warranty disclaimer.
  18  */
  19
  20 #include <linux/suspend.h>
  21
  22 #include "main.h"
  23 #include "wmm.h"
  24 #include "cfg80211.h"
  25 #include "11n.h"
  26
  27 #define VERSION "1.0"
  28 #define MFG_FIRMWARE    "mwifiex_mfg.bin"
  29
  30 static unsigned int debug_mask = MWIFIEX_DEFAULT_DEBUG_MASK;
  31 module_param(debug_mask, uint, 0);
  32 MODULE_PARM_DESC(debug_mask, "bitmap for debug flags");
  33
  34 const char driver_version[] = "mwifiex " VERSION " (%s) ";
  35 static char *cal_data_cfg;
  36 module_param(cal_data_cfg, charp, 0);
  37
  38 static unsigned short driver_mode;
  39 module_param(driver_mode, ushort, 0);
  40 MODULE_PARM_DESC(driver_mode,
  41                  "station=0x1(default), ap-sta=0x3, station-p2p=0x5, ap-sta-p2p=0x7");
  42
  43 bool mfg_mode;
  44 module_param(mfg_mode, bool, 0);
  45 MODULE_PARM_DESC(mfg_mode, "manufacturing mode enable:1, disable:0");
  46
  47 /*
  48  * This function registers the device and performs all the necessary
  49  * initializations.
  50  *
  51  * The following initialization operations are performed -
  52  *      - Allocate adapter structure
  53  *      - Save interface specific operations table in adapter
  54  *      - Call interface specific initialization routine
  55  *      - Allocate private structures
  56  *      - Set default adapter structure parameters
  57  *      - Initialize locks
  58  *
  59  * In case of any errors during inittialization, this function also ensures
  60  * proper cleanup before exiting.
  61  */
  62 static int mwifiex_register(void *card, struct device *dev,
  63                             struct mwifiex_if_ops *if_ops, void **padapter)
  64 {
  65         struct mwifiex_adapter *adapter;
  66         int i;
  67
  68         adapter = kzalloc(sizeof(struct mwifiex_adapter), GFP_KERNEL);
  69         if (!adapter)
  70                 return -ENOMEM;
  71
  72         *padapter = adapter;
  73         adapter->dev = dev;
  74         adapter->card = card;
  75
  76         /* Save interface specific operations in adapter */
  77         memmove(&adapter->if_ops, if_ops, sizeof(struct mwifiex_if_ops));
  78         adapter->debug_mask = debug_mask;
  79
  80         /* card specific initialization has been deferred until now .. */
  81         if (adapter->if_ops.init_if)
  82                 if (adapter->if_ops.init_if(adapter))
  83                         goto error;
  84
  85         adapter->priv_num = 0;
  86
  87         for (i = 0; i < MWIFIEX_MAX_BSS_NUM; i++) {
  88                 /* Allocate memory for private structure */
  89                 adapter->priv[i] =
  90                         kzalloc(sizeof(struct mwifiex_private), GFP_KERNEL);
  91                 if (!adapter->priv[i])
  92                         goto error;
  93
  94                 adapter->priv[i]->adapter = adapter;
  95                 adapter->priv_num++;
  96         }
  97         mwifiex_init_lock_list(adapter);
  98
  99         setup_timer(&adapter->cmd_timer, mwifiex_cmd_timeout_func,
 100                     (unsigned long)adapter);
 101
 102         return 0;
 103
 104 error:
 105         mwifiex_dbg(adapter, ERROR,
 106                     "info: leave mwifiex_register with error\n");
 107
 108         for (i = 0; i < adapter->priv_num; i++)
 109                 kfree(adapter->priv[i]);
 110
 111         kfree(adapter);
 112
 113         return -1;
 114 }
 115
 116 /*
 117  * This function unregisters the device and performs all the necessary
 118  * cleanups.
 119  *
 120  * The following cleanup operations are performed -
 121  *      - Free the timers
 122  *      - Free beacon buffers
 123  *      - Free private structures
 124  *      - Free adapter structure
 125  */
 126 static int mwifiex_unregister(struct mwifiex_adapter *adapter)
 127 {
 128         s32 i;
 129
 130         if (adapter->if_ops.cleanup_if)
 131                 adapter->if_ops.cleanup_if(adapter);
 132
 133         del_timer_sync(&adapter->cmd_timer);
 134
 135         /* Free private structures */
 136         for (i = 0; i < adapter->priv_num; i++) {
 137                 if (adapter->priv[i]) {
 138                         mwifiex_free_curr_bcn(adapter->priv[i]);
 139                         kfree(adapter->priv[i]);
 140                 }
 141         }
 142
 143         if (adapter->nd_info) {
 144                 for (i = 0 ; i < adapter->nd_info->n_matches ; i++)
 145                         kfree(adapter->nd_info->matches[i]);
 146                 kfree(adapter->nd_info);
 147                 adapter->nd_info = NULL;
 148         }
 149
 150         kfree(adapter->regd);
 151
 152         kfree(adapter);
 153         return 0;
 154 }
 155
 156 void mwifiex_queue_main_work(struct mwifiex_adapter *adapter)
 157 {
 158         unsigned long flags;
 159
 160         spin_lock_irqsave(&adapter->main_proc_lock, flags);
 161         if (adapter->mwifiex_processing) {
 162                 adapter->more_task_flag = true;
 163                 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
 164         } else {
 165                 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
 166                 queue_work(adapter->workqueue, &adapter->main_work);
 167         }
 168 }
 169 EXPORT_SYMBOL_GPL(mwifiex_queue_main_work);
 170
 171 static void mwifiex_queue_rx_work(struct mwifiex_adapter *adapter)
 172 {
 173         unsigned long flags;
 174
 175         spin_lock_irqsave(&adapter->rx_proc_lock, flags);
 176         if (adapter->rx_processing) {
 177                 spin_unlock_irqrestore(&adapter->rx_proc_lock, flags);
 178         } else {
 179                 spin_unlock_irqrestore(&adapter->rx_proc_lock, flags);
 180                 queue_work(adapter->rx_workqueue, &adapter->rx_work);
 181         }
 182 }
 183
 184 static int mwifiex_process_rx(struct mwifiex_adapter *adapter)
 185 {
 186         unsigned long flags;
 187         struct sk_buff *skb;
 188         struct mwifiex_rxinfo *rx_info;
 189
 190         spin_lock_irqsave(&adapter->rx_proc_lock, flags);
 191         if (adapter->rx_processing || adapter->rx_locked) {
 192                 spin_unlock_irqrestore(&adapter->rx_proc_lock, flags);
 193                 goto exit_rx_proc;
 194         } else {
 195                 adapter->rx_processing = true;
 196                 spin_unlock_irqrestore(&adapter->rx_proc_lock, flags);
 197         }
 198
 199         /* Check for Rx data */
 200         while ((skb = skb_dequeue(&adapter->rx_data_q))) {
 201                 atomic_dec(&adapter->rx_pending);
 202                 if ((adapter->delay_main_work ||
 203                      adapter->iface_type == MWIFIEX_USB) &&
 204                     (atomic_read(&adapter->rx_pending) < LOW_RX_PENDING)) {
 205                         if (adapter->if_ops.submit_rem_rx_urbs)
 206                                 adapter->if_ops.submit_rem_rx_urbs(adapter);
 207                         adapter->delay_main_work = false;
 208                         mwifiex_queue_main_work(adapter);
 209                 }
 210                 rx_info = MWIFIEX_SKB_RXCB(skb);
 211                 if (rx_info->buf_type == MWIFIEX_TYPE_AGGR_DATA) {
 212                         if (adapter->if_ops.deaggr_pkt)
 213                                 adapter->if_ops.deaggr_pkt(adapter, skb);
 214                         dev_kfree_skb_any(skb);
 215                 } else {
 216                         mwifiex_handle_rx_packet(adapter, skb);
 217                 }
 218         }
 219         spin_lock_irqsave(&adapter->rx_proc_lock, flags);
 220         adapter->rx_processing = false;
 221         spin_unlock_irqrestore(&adapter->rx_proc_lock, flags);
 222
 223 exit_rx_proc:
 224         return 0;
 225 }
 226
 227 /*
 228  * The main process.
 229  *
 230  * This function is the main procedure of the driver and handles various driver
 231  * operations. It runs in a loop and provides the core functionalities.
 232  *
 233  * The main responsibilities of this function are -
 234  *      - Ensure concurrency control
 235  *      - Handle pending interrupts and call interrupt handlers
 236  *      - Wake up the card if required
 237  *      - Handle command responses and call response handlers
 238  *      - Handle events and call event handlers
 239  *      - Execute pending commands
 240  *      - Transmit pending data packets
 241  */
 242 int mwifiex_main_process(struct mwifiex_adapter *adapter)
 243 {
 244         int ret = 0;
 245         unsigned long flags;
 246
 247         spin_lock_irqsave(&adapter->main_proc_lock, flags);
 248
 249         /* Check if already processing */
 250         if (adapter->mwifiex_processing || adapter->main_locked) {
 251                 adapter->more_task_flag = true;
 252                 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
 253                 return 0;
 254         } else {
 255                 adapter->mwifiex_processing = true;
 256                 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
 257         }
 258 process_start:
 259         do {
 260                 if (adapter->hw_status == MWIFIEX_HW_STATUS_NOT_READY)
 261                         break;
 262
 263                 /* For non-USB interfaces, If we process interrupts first, it
 264                  * would increase RX pending even further. Avoid this by
 265                  * checking if rx_pending has crossed high threshold and
 266                  * schedule rx work queue and then process interrupts.
 267                  * For USB interface, there are no interrupts. We already have
 268                  * HIGH_RX_PENDING check in usb.c
 269                  */
 270                 if (atomic_read(&adapter->rx_pending) >= HIGH_RX_PENDING &&
 271                     adapter->iface_type != MWIFIEX_USB) {
 272                         adapter->delay_main_work = true;
 273                         mwifiex_queue_rx_work(adapter);
 274                         break;
 275                 }
 276
 277                 /* Handle pending interrupt if any */
 278                 if (adapter->int_status) {
 279                         if (adapter->hs_activated)
 280                                 mwifiex_process_hs_config(adapter);
 281                         if (adapter->if_ops.process_int_status)
 282                                 adapter->if_ops.process_int_status(adapter);
 283                 }
 284
 285                 if (adapter->rx_work_enabled && adapter->data_received)
 286                         mwifiex_queue_rx_work(adapter);
 287
 288                 /* Need to wake up the card ? */
 289                 if ((adapter->ps_state == PS_STATE_SLEEP) &&
 290                     (adapter->pm_wakeup_card_req &&
 291                      !adapter->pm_wakeup_fw_try) &&
 292                     (is_command_pending(adapter) ||
 293                      !skb_queue_empty(&adapter->tx_data_q) ||
 294                      !mwifiex_bypass_txlist_empty(adapter) ||
 295                      !mwifiex_wmm_lists_empty(adapter))) {
 296                         adapter->pm_wakeup_fw_try = true;
 297                         mod_timer(&adapter->wakeup_timer, jiffies + (HZ*3));
 298                         adapter->if_ops.wakeup(adapter);
 299                         continue;
 300                 }
 301
 302                 if (IS_CARD_RX_RCVD(adapter)) {
 303                         adapter->data_received = false;
 304                         adapter->pm_wakeup_fw_try = false;
 305                         del_timer(&adapter->wakeup_timer);
 306                         if (adapter->ps_state == PS_STATE_SLEEP)
 307                                 adapter->ps_state = PS_STATE_AWAKE;
 308                 } else {
 309                         /* We have tried to wakeup the card already */
 310                         if (adapter->pm_wakeup_fw_try)
 311                                 break;
 312                         if (adapter->ps_state == PS_STATE_PRE_SLEEP)
 313                                 mwifiex_check_ps_cond(adapter);
 314
 315                         if (adapter->ps_state != PS_STATE_AWAKE)
 316                                 break;
 317                         if (adapter->tx_lock_flag) {
 318                                 if (adapter->iface_type == MWIFIEX_USB) {
 319                                         if (!adapter->usb_mc_setup)
 320                                                 break;
 321                                 } else
 322                                         break;
 323                         }
 324
 325                         if ((!adapter->scan_chan_gap_enabled &&
 326                              adapter->scan_processing) || adapter->data_sent ||
 327                              mwifiex_is_tdls_chan_switching
 328                              (mwifiex_get_priv(adapter,
 329                                                MWIFIEX_BSS_ROLE_STA)) ||
 330                             (mwifiex_wmm_lists_empty(adapter) &&
 331                              mwifiex_bypass_txlist_empty(adapter) &&
 332                              skb_queue_empty(&adapter->tx_data_q))) {
 333                                 if (adapter->cmd_sent || adapter->curr_cmd ||
 334                                         !mwifiex_is_send_cmd_allowed
 335                                                 (mwifiex_get_priv(adapter,
 336                                                 MWIFIEX_BSS_ROLE_STA)) ||
 337                                     (!is_command_pending(adapter)))
 338                                         break;
 339                         }
 340                 }
 341
 342                 /* Check for event */
 343                 if (adapter->event_received) {
 344                         adapter->event_received = false;
 345                         mwifiex_process_event(adapter);
 346                 }
 347
 348                 /* Check for Cmd Resp */
 349                 if (adapter->cmd_resp_received) {
 350                         adapter->cmd_resp_received = false;
 351                         mwifiex_process_cmdresp(adapter);
 352
 353                         /* call mwifiex back when init_fw is done */
 354                         if (adapter->hw_status == MWIFIEX_HW_STATUS_INIT_DONE) {
 355                                 adapter->hw_status = MWIFIEX_HW_STATUS_READY;
 356                                 mwifiex_init_fw_complete(adapter);
 357                         }
 358                 }
 359
 360                 /* Check if we need to confirm Sleep Request
 361                    received previously */
 362                 if (adapter->ps_state == PS_STATE_PRE_SLEEP)
 363                         mwifiex_check_ps_cond(adapter);
 364
 365                 /* * The ps_state may have been changed during processing of
 366                  * Sleep Request event.
 367                  */
 368                 if ((adapter->ps_state == PS_STATE_SLEEP) ||
 369                     (adapter->ps_state == PS_STATE_PRE_SLEEP) ||
 370                     (adapter->ps_state == PS_STATE_SLEEP_CFM)) {
 371                         continue;
 372                 }
 373
 374                 if (adapter->tx_lock_flag) {
 375                         if (adapter->iface_type == MWIFIEX_USB) {
 376                                 if (!adapter->usb_mc_setup)
 377                                         continue;
 378                         } else
 379                                 continue;
 380                 }
 381
 382                 if (!adapter->cmd_sent && !adapter->curr_cmd &&
 383                     mwifiex_is_send_cmd_allowed
 384                     (mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA))) {
 385                         if (mwifiex_exec_next_cmd(adapter) == -1) {
 386                                 ret = -1;
 387                                 break;
 388                         }
 389                 }
 390
 391                 /** If USB Multi channel setup ongoing,
 392                  *  wait for ready to tx data.
 393                  */
 394                 if (adapter->iface_type == MWIFIEX_USB &&
 395                     adapter->usb_mc_setup)
 396                         continue;
 397
 398                 if ((adapter->scan_chan_gap_enabled ||
 399                      !adapter->scan_processing) &&
 400                     !adapter->data_sent &&
 401                     !skb_queue_empty(&adapter->tx_data_q)) {
 402                         mwifiex_process_tx_queue(adapter);
 403                         if (adapter->hs_activated) {
 404                                 adapter->is_hs_configured = false;
 405                                 mwifiex_hs_activated_event
 406                                         (mwifiex_get_priv
 407                                         (adapter, MWIFIEX_BSS_ROLE_ANY),
 408                                         false);
 409                         }
 410                 }
 411
 412                 if ((adapter->scan_chan_gap_enabled ||
 413                      !adapter->scan_processing) &&
 414                     !adapter->data_sent &&
 415                     !mwifiex_bypass_txlist_empty(adapter) &&
 416                     !mwifiex_is_tdls_chan_switching
 417                         (mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA))) {
 418                         mwifiex_process_bypass_tx(adapter);
 419                         if (adapter->hs_activated) {
 420                                 adapter->is_hs_configured = false;
 421                                 mwifiex_hs_activated_event
 422                                         (mwifiex_get_priv
 423                                          (adapter, MWIFIEX_BSS_ROLE_ANY),
 424                                          false);
 425                         }
 426                 }
 427
 428                 if ((adapter->scan_chan_gap_enabled ||
 429                      !adapter->scan_processing) &&
 430                     !adapter->data_sent && !mwifiex_wmm_lists_empty(adapter) &&
 431                     !mwifiex_is_tdls_chan_switching
 432                         (mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA))) {
 433                         mwifiex_wmm_process_tx(adapter);
 434                         if (adapter->hs_activated) {
 435                                 adapter->is_hs_configured = false;
 436                                 mwifiex_hs_activated_event
 437                                         (mwifiex_get_priv
 438                                          (adapter, MWIFIEX_BSS_ROLE_ANY),
 439                                          false);
 440                         }
 441                 }
 442
 443                 if (adapter->delay_null_pkt && !adapter->cmd_sent &&
 444                     !adapter->curr_cmd && !is_command_pending(adapter) &&
 445                     (mwifiex_wmm_lists_empty(adapter) &&
 446                      mwifiex_bypass_txlist_empty(adapter) &&
 447                      skb_queue_empty(&adapter->tx_data_q))) {
 448                         if (!mwifiex_send_null_packet
 449                             (mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA),
 450                              MWIFIEX_TxPD_POWER_MGMT_NULL_PACKET |
 451                              MWIFIEX_TxPD_POWER_MGMT_LAST_PACKET)) {
 452                                 adapter->delay_null_pkt = false;
 453                                 adapter->ps_state = PS_STATE_SLEEP;
 454                         }
 455                         break;
 456                 }
 457         } while (true);
 458
 459         spin_lock_irqsave(&adapter->main_proc_lock, flags);
 460         if (adapter->more_task_flag) {
 461                 adapter->more_task_flag = false;
 462                 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
 463                 goto process_start;
 464         }
 465         adapter->mwifiex_processing = false;
 466         spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
 467
 468         return ret;
 469 }
 470 EXPORT_SYMBOL_GPL(mwifiex_main_process);
 471
 472 /*
 473  * This function frees the adapter structure.
 474  *
 475  * Additionally, this closes the netlink socket, frees the timers
 476  * and private structures.
 477  */
 478 static void mwifiex_free_adapter(struct mwifiex_adapter *adapter)
 479 {
 480         if (!adapter) {
 481                 pr_err("%s: adapter is NULL\n", __func__);
 482                 return;
 483         }
 484
 485         mwifiex_unregister(adapter);
 486         pr_debug("info: %s: free adapter\n", __func__);
 487 }
 488
 489 /*
 490  * This function cancels all works in the queue and destroys
 491  * the main workqueue.
 492  */
 493 static void mwifiex_terminate_workqueue(struct mwifiex_adapter *adapter)
 494 {
 495         if (adapter->workqueue) {
 496                 flush_workqueue(adapter->workqueue);
 497                 destroy_workqueue(adapter->workqueue);
 498                 adapter->workqueue = NULL;
 499         }
 500
 501         if (adapter->rx_workqueue) {
 502                 flush_workqueue(adapter->rx_workqueue);
 503                 destroy_workqueue(adapter->rx_workqueue);
 504                 adapter->rx_workqueue = NULL;
 505         }
 506 }
 507
 508 /*
 509  * This function gets firmware and initializes it.
 510  *
 511  * The main initialization steps followed are -
 512  *      - Download the correct firmware to card
 513  *      - Issue the init commands to firmware
 514  */
 515 static int _mwifiex_fw_dpc(const struct firmware *firmware, void *context)
 516 {
 517         int ret;
 518         char fmt[64];
 519         struct mwifiex_adapter *adapter = context;
 520         struct mwifiex_fw_image fw;
 521         bool init_failed = false;
 522         struct wireless_dev *wdev;
 523         struct completion *fw_done = adapter->fw_done;
 524
 525         if (!firmware) {
 526                 mwifiex_dbg(adapter, ERROR,
 527                             "Failed to get firmware %s\n", adapter->fw_name);
 528                 goto err_dnld_fw;
 529         }
 530
 531         memset(&fw, 0, sizeof(struct mwifiex_fw_image));
 532         adapter->firmware = firmware;
 533         fw.fw_buf = (u8 *) adapter->firmware->data;
 534         fw.fw_len = adapter->firmware->size;
 535
 536         if (adapter->if_ops.dnld_fw) {
 537                 ret = adapter->if_ops.dnld_fw(adapter, &fw);
 538         } else {
 539                 ret = mwifiex_dnld_fw(adapter, &fw);
 540         }
 541
 542         if (ret == -1)
 543                 goto err_dnld_fw;
 544
 545         mwifiex_dbg(adapter, MSG, "WLAN FW is active\n");
 546
 547         if (cal_data_cfg) {
 548                 if ((request_firmware(&adapter->cal_data, cal_data_cfg,
 549                                       adapter->dev)) < 0)
 550                         mwifiex_dbg(adapter, ERROR,
 551                                     "Cal data request_firmware() failed\n");
 552         }
 553
 554         /* enable host interrupt after fw dnld is successful */
 555         if (adapter->if_ops.enable_int) {
 556                 if (adapter->if_ops.enable_int(adapter))
 557                         goto err_dnld_fw;
 558         }
 559
 560         adapter->init_wait_q_woken = false;
 561         ret = mwifiex_init_fw(adapter);
 562         if (ret == -1) {
 563                 goto err_init_fw;
 564         } else if (!ret) {
 565                 adapter->hw_status = MWIFIEX_HW_STATUS_READY;
 566                 goto done;
 567         }
 568         /* Wait for mwifiex_init to complete */
 569         if (!adapter->mfg_mode) {
 570                 wait_event_interruptible(adapter->init_wait_q,
 571                                          adapter->init_wait_q_woken);
 572                 if (adapter->hw_status != MWIFIEX_HW_STATUS_READY)
 573                         goto err_init_fw;
 574         }
 575
 576         if (!adapter->wiphy) {
 577                 if (mwifiex_register_cfg80211(adapter)) {
 578                         mwifiex_dbg(adapter, ERROR,
 579                                     "cannot register with cfg80211\n");
 580                         goto err_init_fw;
 581                 }
 582         }
 583
 584         if (mwifiex_init_channel_scan_gap(adapter)) {
 585                 mwifiex_dbg(adapter, ERROR,
 586                             "could not init channel stats table\n");
 587                 goto err_init_fw;
 588         }
 589
 590         if (driver_mode) {
 591                 driver_mode &= MWIFIEX_DRIVER_MODE_BITMASK;
 592                 driver_mode |= MWIFIEX_DRIVER_MODE_STA;
 593         }
 594
 595         rtnl_lock();
 596         /* Create station interface by default */
 597         wdev = mwifiex_add_virtual_intf(adapter->wiphy, "mlan%d", NET_NAME_ENUM,
 598                                         NL80211_IFTYPE_STATION, NULL);
 599         if (IS_ERR(wdev)) {
 600                 mwifiex_dbg(adapter, ERROR,
 601                             "cannot create default STA interface\n");
 602                 rtnl_unlock();
 603                 goto err_add_intf;
 604         }
 605
 606         if (driver_mode & MWIFIEX_DRIVER_MODE_UAP) {
 607                 wdev = mwifiex_add_virtual_intf(adapter->wiphy, "uap%d", NET_NAME_ENUM,
 608                                                 NL80211_IFTYPE_AP, NULL);
 609                 if (IS_ERR(wdev)) {
 610                         mwifiex_dbg(adapter, ERROR,
 611                                     "cannot create AP interface\n");
 612                         rtnl_unlock();
 613                         goto err_add_intf;
 614                 }
 615         }
 616
 617         if (driver_mode & MWIFIEX_DRIVER_MODE_P2P) {
 618                 wdev = mwifiex_add_virtual_intf(adapter->wiphy, "p2p%d", NET_NAME_ENUM,
 619                                                 NL80211_IFTYPE_P2P_CLIENT, NULL);
 620                 if (IS_ERR(wdev)) {
 621                         mwifiex_dbg(adapter, ERROR,
 622                                     "cannot create p2p client interface\n");
 623                         rtnl_unlock();
 624                         goto err_add_intf;
 625                 }
 626         }
 627         rtnl_unlock();
 628
 629         mwifiex_drv_get_driver_version(adapter, fmt, sizeof(fmt) - 1);
 630         mwifiex_dbg(adapter, MSG, "driver_version = %s\n", fmt);
 631         goto done;
 632
 633 err_add_intf:
 634         vfree(adapter->chan_stats);
 635         wiphy_unregister(adapter->wiphy);
 636         wiphy_free(adapter->wiphy);
 637 err_init_fw:
 638         if (adapter->if_ops.disable_int)
 639                 adapter->if_ops.disable_int(adapter);
 640 err_dnld_fw:
 641         mwifiex_dbg(adapter, ERROR,
 642                     "info: %s: unregister device\n", __func__);
 643         if (adapter->if_ops.unregister_dev)
 644                 adapter->if_ops.unregister_dev(adapter);
 645
 646         adapter->surprise_removed = true;
 647         mwifiex_terminate_workqueue(adapter);
 648
 649         if (adapter->hw_status == MWIFIEX_HW_STATUS_READY) {
 650                 pr_debug("info: %s: shutdown mwifiex\n", __func__);
 651                 mwifiex_shutdown_drv(adapter);
 652         }
 653
 654         init_failed = true;
 655 done:
 656         if (adapter->cal_data) {
 657                 release_firmware(adapter->cal_data);
 658                 adapter->cal_data = NULL;
 659         }
 660         if (adapter->firmware) {
 661                 release_firmware(adapter->firmware);
 662                 adapter->firmware = NULL;
 663         }
 664         if (init_failed)
 665                 mwifiex_free_adapter(adapter);
 666         /* Tell all current and future waiters we're finished */
 667         complete_all(fw_done);
 668
 669         return init_failed ? -EIO : 0;
 670 }
 671
 672 static void mwifiex_fw_dpc(const struct firmware *firmware, void *context)
 673 {
 674         _mwifiex_fw_dpc(firmware, context);
 675 }
 676
 677 /*
 678  * This function gets the firmware and (if called asynchronously) kicks off the
 679  * HW init when done.
 680  */
 681 static int mwifiex_init_hw_fw(struct mwifiex_adapter *adapter,
 682                               bool req_fw_nowait)
 683 {
 684         int ret;
 685
 686         /* Override default firmware with manufacturing one if
 687          * manufacturing mode is enabled
 688          */
 689         if (mfg_mode) {
 690                 if (strlcpy(adapter->fw_name, MFG_FIRMWARE,
 691                             sizeof(adapter->fw_name)) >=
 692                             sizeof(adapter->fw_name)) {
 693                         pr_err("%s: fw_name too long!\n", __func__);
 694                         return -1;
 695                 }
 696         }
 697
 698         if (req_fw_nowait) {
 699                 ret = request_firmware_nowait(THIS_MODULE, 1, adapter->fw_name,
 700                                               adapter->dev, GFP_KERNEL, adapter,
 701                                               mwifiex_fw_dpc);
 702         } else {
 703                 ret = request_firmware(&adapter->firmware,
 704                                        adapter->fw_name,
 705                                        adapter->dev);
 706         }
 707
 708         if (ret < 0)
 709                 mwifiex_dbg(adapter, ERROR, "request_firmware%s error %d\n",
 710                             req_fw_nowait ? "_nowait" : "", ret);
 711         return ret;
 712 }
 713
 714 /*
 715  * CFG802.11 network device handler for open.
 716  *
 717  * Starts the data queue.
 718  */
 719 static int
 720 mwifiex_open(struct net_device *dev)
 721 {
 722         netif_carrier_off(dev);
 723
 724         return 0;
 725 }
 726
 727 /*
 728  * CFG802.11 network device handler for close.
 729  */
 730 static int
 731 mwifiex_close(struct net_device *dev)
 732 {
 733         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 734
 735         if (priv->scan_request) {
 736                 struct cfg80211_scan_info info = {
 737                         .aborted = true,
 738                 };
 739
 740                 mwifiex_dbg(priv->adapter, INFO,
 741                             "aborting scan on ndo_stop\n");
 742                 cfg80211_scan_done(priv->scan_request, &info);
 743                 priv->scan_request = NULL;
 744                 priv->scan_aborting = true;
 745         }
 746
 747         if (priv->sched_scanning) {
 748                 mwifiex_dbg(priv->adapter, INFO,
 749                             "aborting bgscan on ndo_stop\n");
 750                 mwifiex_stop_bg_scan(priv);
 751                 cfg80211_sched_scan_stopped(priv->wdev.wiphy, 0);
 752         }
 753
 754         return 0;
 755 }
 756
 757 static bool
 758 mwifiex_bypass_tx_queue(struct mwifiex_private *priv,
 759                         struct sk_buff *skb)
 760 {
 761         struct ethhdr *eth_hdr = (struct ethhdr *)skb->data;
 762
 763         if (ntohs(eth_hdr->h_proto) == ETH_P_PAE ||
 764             mwifiex_is_skb_mgmt_frame(skb) ||
 765             (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA &&
 766              ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info) &&
 767              (ntohs(eth_hdr->h_proto) == ETH_P_TDLS))) {
 768                 mwifiex_dbg(priv->adapter, DATA,
 769                             "bypass txqueue; eth type %#x, mgmt %d\n",
 770                              ntohs(eth_hdr->h_proto),
 771                              mwifiex_is_skb_mgmt_frame(skb));
 772                 return true;
 773         }
 774
 775         return false;
 776 }
 777 /*
 778  * Add buffer into wmm tx queue and queue work to transmit it.
 779  */
 780 int mwifiex_queue_tx_pkt(struct mwifiex_private *priv, struct sk_buff *skb)
 781 {
 782         struct netdev_queue *txq;
 783         int index = mwifiex_1d_to_wmm_queue[skb->priority];
 784
 785         if (atomic_inc_return(&priv->wmm_tx_pending[index]) >= MAX_TX_PENDING) {
 786                 txq = netdev_get_tx_queue(priv->netdev, index);
 787                 if (!netif_tx_queue_stopped(txq)) {
 788                         netif_tx_stop_queue(txq);
 789                         mwifiex_dbg(priv->adapter, DATA,
 790                                     "stop queue: %d\n", index);
 791                 }
 792         }
 793
 794         if (mwifiex_bypass_tx_queue(priv, skb)) {
 795                 atomic_inc(&priv->adapter->tx_pending);
 796                 atomic_inc(&priv->adapter->bypass_tx_pending);
 797                 mwifiex_wmm_add_buf_bypass_txqueue(priv, skb);
 798          } else {
 799                 atomic_inc(&priv->adapter->tx_pending);
 800                 mwifiex_wmm_add_buf_txqueue(priv, skb);
 801          }
 802
 803         mwifiex_queue_main_work(priv->adapter);
 804
 805         return 0;
 806 }
 807
 808 struct sk_buff *
 809 mwifiex_clone_skb_for_tx_status(struct mwifiex_private *priv,
 810                                 struct sk_buff *skb, u8 flag, u64 *cookie)
 811 {
 812         struct sk_buff *orig_skb = skb;
 813         struct mwifiex_txinfo *tx_info, *orig_tx_info;
 814
 815         skb = skb_clone(skb, GFP_ATOMIC);
 816         if (skb) {
 817                 unsigned long flags;
 818                 int id;
 819
 820                 spin_lock_irqsave(&priv->ack_status_lock, flags);
 821                 id = idr_alloc(&priv->ack_status_frames, orig_skb,
 822                                1, 0x10, GFP_ATOMIC);
 823                 spin_unlock_irqrestore(&priv->ack_status_lock, flags);
 824
 825                 if (id >= 0) {
 826                         tx_info = MWIFIEX_SKB_TXCB(skb);
 827                         tx_info->ack_frame_id = id;
 828                         tx_info->flags |= flag;
 829                         orig_tx_info = MWIFIEX_SKB_TXCB(orig_skb);
 830                         orig_tx_info->ack_frame_id = id;
 831                         orig_tx_info->flags |= flag;
 832
 833                         if (flag == MWIFIEX_BUF_FLAG_ACTION_TX_STATUS && cookie)
 834                                 orig_tx_info->cookie = *cookie;
 835
 836                 } else if (skb_shared(skb)) {
 837                         kfree_skb(orig_skb);
 838                 } else {
 839                         kfree_skb(skb);
 840                         skb = orig_skb;
 841                 }
 842         } else {
 843                 /* couldn't clone -- lose tx status ... */
 844                 skb = orig_skb;
 845         }
 846
 847         return skb;
 848 }
 849
 850 /*
 851  * CFG802.11 network device handler for data transmission.
 852  */
 853 static int
 854 mwifiex_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
 855 {
 856         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 857         struct sk_buff *new_skb;
 858         struct mwifiex_txinfo *tx_info;
 859         bool multicast;
 860
 861         mwifiex_dbg(priv->adapter, DATA,
 862                     "data: %lu BSS(%d-%d): Data <= kernel\n",
 863                     jiffies, priv->bss_type, priv->bss_num);
 864
 865         if (priv->adapter->surprise_removed) {
 866                 kfree_skb(skb);
 867                 priv->stats.tx_dropped++;
 868                 return 0;
 869         }
 870         if (!skb->len || (skb->len > ETH_FRAME_LEN)) {
 871                 mwifiex_dbg(priv->adapter, ERROR,
 872                             "Tx: bad skb len %d\n", skb->len);
 873                 kfree_skb(skb);
 874                 priv->stats.tx_dropped++;
 875                 return 0;
 876         }
 877         if (skb_headroom(skb) < MWIFIEX_MIN_DATA_HEADER_LEN) {
 878                 mwifiex_dbg(priv->adapter, DATA,
 879                             "data: Tx: insufficient skb headroom %d\n",
 880                             skb_headroom(skb));
 881                 /* Insufficient skb headroom - allocate a new skb */
 882                 new_skb =
 883                         skb_realloc_headroom(skb, MWIFIEX_MIN_DATA_HEADER_LEN);
 884                 if (unlikely(!new_skb)) {
 885                         mwifiex_dbg(priv->adapter, ERROR,
 886                                     "Tx: cannot alloca new_skb\n");
 887                         kfree_skb(skb);
 888                         priv->stats.tx_dropped++;
 889                         return 0;
 890                 }
 891                 kfree_skb(skb);
 892                 skb = new_skb;
 893                 mwifiex_dbg(priv->adapter, INFO,
 894                             "info: new skb headroomd %d\n",
 895                             skb_headroom(skb));
 896         }
 897
 898         tx_info = MWIFIEX_SKB_TXCB(skb);
 899         memset(tx_info, 0, sizeof(*tx_info));
 900         tx_info->bss_num = priv->bss_num;
 901         tx_info->bss_type = priv->bss_type;
 902         tx_info->pkt_len = skb->len;
 903
 904         multicast = is_multicast_ether_addr(skb->data);
 905
 906         if (unlikely(!multicast && skb->sk &&
 907                      skb_shinfo(skb)->tx_flags & SKBTX_WIFI_STATUS &&
 908                      priv->adapter->fw_api_ver == MWIFIEX_FW_V15))
 909                 skb = mwifiex_clone_skb_for_tx_status(priv,
 910                                                       skb,
 911                                         MWIFIEX_BUF_FLAG_EAPOL_TX_STATUS, NULL);
 912
 913         /* Record the current time the packet was queued; used to
 914          * determine the amount of time the packet was queued in
 915          * the driver before it was sent to the firmware.
 916          * The delay is then sent along with the packet to the
 917          * firmware for aggregate delay calculation for stats and
 918          * MSDU lifetime expiry.
 919          */
 920         __net_timestamp(skb);
 921
 922         if (ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info) &&
 923             priv->bss_type == MWIFIEX_BSS_TYPE_STA &&
 924             !ether_addr_equal_unaligned(priv->cfg_bssid, skb->data)) {
 925                 if (priv->adapter->auto_tdls && priv->check_tdls_tx)
 926                         mwifiex_tdls_check_tx(priv, skb);
 927         }
 928
 929         mwifiex_queue_tx_pkt(priv, skb);
 930
 931         return 0;
 932 }
 933
 934 /*
 935  * CFG802.11 network device handler for setting MAC address.
 936  */
 937 static int
 938 mwifiex_set_mac_address(struct net_device *dev, void *addr)
 939 {
 940         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 941         struct sockaddr *hw_addr = addr;
 942         int ret;
 943
 944         memcpy(priv->curr_addr, hw_addr->sa_data, ETH_ALEN);
 945
 946         /* Send request to firmware */
 947         ret = mwifiex_send_cmd(priv, HostCmd_CMD_802_11_MAC_ADDRESS,
 948                                HostCmd_ACT_GEN_SET, 0, NULL, true);
 949
 950         if (!ret)
 951                 memcpy(priv->netdev->dev_addr, priv->curr_addr, ETH_ALEN);
 952         else
 953                 mwifiex_dbg(priv->adapter, ERROR,
 954                             "set mac address failed: ret=%d\n", ret);
 955
 956         memcpy(dev->dev_addr, priv->curr_addr, ETH_ALEN);
 957
 958         return ret;
 959 }
 960
 961 /*
 962  * CFG802.11 network device handler for setting multicast list.
 963  */
 964 static void mwifiex_set_multicast_list(struct net_device *dev)
 965 {
 966         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 967         struct mwifiex_multicast_list mcast_list;
 968
 969         if (dev->flags & IFF_PROMISC) {
 970                 mcast_list.mode = MWIFIEX_PROMISC_MODE;
 971         } else if (dev->flags & IFF_ALLMULTI ||
 972                    netdev_mc_count(dev) > MWIFIEX_MAX_MULTICAST_LIST_SIZE) {
 973                 mcast_list.mode = MWIFIEX_ALL_MULTI_MODE;
 974         } else {
 975                 mcast_list.mode = MWIFIEX_MULTICAST_MODE;
 976                 mcast_list.num_multicast_addr =
 977                         mwifiex_copy_mcast_addr(&mcast_list, dev);
 978         }
 979         mwifiex_request_set_multicast_list(priv, &mcast_list);
 980 }
 981
 982 /*
 983  * CFG802.11 network device handler for transmission timeout.
 984  */
 985 static void
 986 mwifiex_tx_timeout(struct net_device *dev)
 987 {
 988         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 989
 990         priv->num_tx_timeout++;
 991         priv->tx_timeout_cnt++;
 992         mwifiex_dbg(priv->adapter, ERROR,
 993                     "%lu : Tx timeout(#%d), bss_type-num = %d-%d\n",
 994                     jiffies, priv->tx_timeout_cnt, priv->bss_type,
 995                     priv->bss_num);
 996         mwifiex_set_trans_start(dev);
 997
 998         if (priv->tx_timeout_cnt > TX_TIMEOUT_THRESHOLD &&
 999             priv->adapter->if_ops.card_reset) {
1000                 mwifiex_dbg(priv->adapter, ERROR,
1001                             "tx_timeout_cnt exceeds threshold.\t"
1002                             "Triggering card reset!\n");
1003                 priv->adapter->if_ops.card_reset(priv->adapter);
1004         }
1005 }
1006
1007 void mwifiex_multi_chan_resync(struct mwifiex_adapter *adapter)
1008 {
1009         struct usb_card_rec *card = adapter->card;
1010         struct mwifiex_private *priv;
1011         u16 tx_buf_size;
1012         int i, ret;
1013
1014         card->mc_resync_flag = true;
1015         for (i = 0; i < MWIFIEX_TX_DATA_PORT; i++) {
1016                 if (atomic_read(&card->port[i].tx_data_urb_pending)) {
1017                         mwifiex_dbg(adapter, WARN, "pending data urb in sys\n");
1018                         return;
1019                 }
1020         }
1021
1022         card->mc_resync_flag = false;
1023         tx_buf_size = 0xffff;
1024         priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
1025         ret = mwifiex_send_cmd(priv, HostCmd_CMD_RECONFIGURE_TX_BUFF,
1026                                HostCmd_ACT_GEN_SET, 0, &tx_buf_size, false);
1027         if (ret)
1028                 mwifiex_dbg(adapter, ERROR,
1029                             "send reconfig tx buf size cmd err\n");
1030 }
1031 EXPORT_SYMBOL_GPL(mwifiex_multi_chan_resync);
1032
1033 int mwifiex_drv_info_dump(struct mwifiex_adapter *adapter, void **drv_info)
1034 {
1035         void *p;
1036         char drv_version[64];
1037         struct usb_card_rec *cardp;
1038         struct sdio_mmc_card *sdio_card;
1039         struct mwifiex_private *priv;
1040         int i, idx;
1041         struct netdev_queue *txq;
1042         struct mwifiex_debug_info *debug_info;
1043         void *drv_info_dump;
1044
1045         mwifiex_dbg(adapter, MSG, "===mwifiex driverinfo dump start===\n");
1046
1047         /* memory allocate here should be free in mwifiex_upload_device_dump*/
1048         drv_info_dump = vzalloc(MWIFIEX_DRV_INFO_SIZE_MAX);
1049
1050         if (!drv_info_dump)
1051                 return 0;
1052
1053         p = (char *)(drv_info_dump);
1054         p += sprintf(p, "driver_name = " "\"mwifiex\"\n");
1055
1056         mwifiex_drv_get_driver_version(adapter, drv_version,
1057                                        sizeof(drv_version) - 1);
1058         p += sprintf(p, "driver_version = %s\n", drv_version);
1059
1060         if (adapter->iface_type == MWIFIEX_USB) {
1061                 cardp = (struct usb_card_rec *)adapter->card;
1062                 p += sprintf(p, "tx_cmd_urb_pending = %d\n",
1063                              atomic_read(&cardp->tx_cmd_urb_pending));
1064                 p += sprintf(p, "tx_data_urb_pending_port_0 = %d\n",
1065                              atomic_read(&cardp->port[0].tx_data_urb_pending));
1066                 p += sprintf(p, "tx_data_urb_pending_port_1 = %d\n",
1067                              atomic_read(&cardp->port[1].tx_data_urb_pending));
1068                 p += sprintf(p, "rx_cmd_urb_pending = %d\n",
1069                              atomic_read(&cardp->rx_cmd_urb_pending));
1070                 p += sprintf(p, "rx_data_urb_pending = %d\n",
1071                              atomic_read(&cardp->rx_data_urb_pending));
1072         }
1073
1074         p += sprintf(p, "tx_pending = %d\n",
1075                      atomic_read(&adapter->tx_pending));
1076         p += sprintf(p, "rx_pending = %d\n",
1077                      atomic_read(&adapter->rx_pending));
1078
1079         if (adapter->iface_type == MWIFIEX_SDIO) {
1080                 sdio_card = (struct sdio_mmc_card *)adapter->card;
1081                 p += sprintf(p, "\nmp_rd_bitmap=0x%x curr_rd_port=0x%x\n",
1082                              sdio_card->mp_rd_bitmap, sdio_card->curr_rd_port);
1083                 p += sprintf(p, "mp_wr_bitmap=0x%x curr_wr_port=0x%x\n",
1084                              sdio_card->mp_wr_bitmap, sdio_card->curr_wr_port);
1085         }
1086
1087         for (i = 0; i < adapter->priv_num; i++) {
1088                 if (!adapter->priv[i] || !adapter->priv[i]->netdev)
1089                         continue;
1090                 priv = adapter->priv[i];
1091                 p += sprintf(p, "\n[interface  : \"%s\"]\n",
1092                              priv->netdev->name);
1093                 p += sprintf(p, "wmm_tx_pending[0] = %d\n",
1094                              atomic_read(&priv->wmm_tx_pending[0]));
1095                 p += sprintf(p, "wmm_tx_pending[1] = %d\n",
1096                              atomic_read(&priv->wmm_tx_pending[1]));
1097                 p += sprintf(p, "wmm_tx_pending[2] = %d\n",
1098                              atomic_read(&priv->wmm_tx_pending[2]));
1099                 p += sprintf(p, "wmm_tx_pending[3] = %d\n",
1100                              atomic_read(&priv->wmm_tx_pending[3]));
1101                 p += sprintf(p, "media_state=\"%s\"\n", !priv->media_connected ?
1102                              "Disconnected" : "Connected");
1103                 p += sprintf(p, "carrier %s\n", (netif_carrier_ok(priv->netdev)
1104                              ? "on" : "off"));
1105                 for (idx = 0; idx < priv->netdev->num_tx_queues; idx++) {
1106                         txq = netdev_get_tx_queue(priv->netdev, idx);
1107                         p += sprintf(p, "tx queue %d:%s  ", idx,
1108                                      netif_tx_queue_stopped(txq) ?
1109                                      "stopped" : "started");
1110                 }
1111                 p += sprintf(p, "\n%s: num_tx_timeout = %d\n",
1112                              priv->netdev->name, priv->num_tx_timeout);
1113         }
1114
1115         if (adapter->iface_type == MWIFIEX_SDIO ||
1116             adapter->iface_type == MWIFIEX_PCIE) {
1117                 p += sprintf(p, "\n=== %s register dump===\n",
1118                              adapter->iface_type == MWIFIEX_SDIO ?
1119                                                         "SDIO" : "PCIE");
1120                 if (adapter->if_ops.reg_dump)
1121                         p += adapter->if_ops.reg_dump(adapter, p);
1122         }
1123         p += sprintf(p, "\n=== more debug information\n");
1124         debug_info = kzalloc(sizeof(*debug_info), GFP_KERNEL);
1125         if (debug_info) {
1126                 for (i = 0; i < adapter->priv_num; i++) {
1127                         if (!adapter->priv[i] || !adapter->priv[i]->netdev)
1128                                 continue;
1129                         priv = adapter->priv[i];
1130                         mwifiex_get_debug_info(priv, debug_info);
1131                         p += mwifiex_debug_info_to_buffer(priv, p, debug_info);
1132                         break;
1133                 }
1134                 kfree(debug_info);
1135         }
1136
1137         mwifiex_dbg(adapter, MSG, "===mwifiex driverinfo dump end===\n");
1138         *drv_info = drv_info_dump;
1139         return p - drv_info_dump;
1140 }
1141 EXPORT_SYMBOL_GPL(mwifiex_drv_info_dump);
1142
1143 void mwifiex_upload_device_dump(struct mwifiex_adapter *adapter, void *drv_info,
1144                                 int drv_info_size)
1145 {
1146         u8 idx, *dump_data, *fw_dump_ptr;
1147         u32 dump_len;
1148
1149         dump_len = (strlen("========Start dump driverinfo========\n") +
1150                        drv_info_size +
1151                        strlen("\n========End dump========\n"));
1152
1153         for (idx = 0; idx < adapter->num_mem_types; idx++) {
1154                 struct memory_type_mapping *entry =
1155                                 &adapter->mem_type_mapping_tbl[idx];
1156
1157                 if (entry->mem_ptr) {
1158                         dump_len += (strlen("========Start dump ") +
1159                                         strlen(entry->mem_name) +
1160                                         strlen("========\n") +
1161                                         (entry->mem_size + 1) +
1162                                         strlen("\n========End dump========\n"));
1163                 }
1164         }
1165
1166         dump_data = vzalloc(dump_len + 1);
1167         if (!dump_data)
1168                 goto done;
1169
1170         fw_dump_ptr = dump_data;
1171
1172         /* Dump all the memory data into single file, a userspace script will
1173          * be used to split all the memory data to multiple files
1174          */
1175         mwifiex_dbg(adapter, MSG,
1176                     "== mwifiex dump information to /sys/class/devcoredump start");
1177
1178         strcpy(fw_dump_ptr, "========Start dump driverinfo========\n");
1179         fw_dump_ptr += strlen("========Start dump driverinfo========\n");
1180         memcpy(fw_dump_ptr, drv_info, drv_info_size);
1181         fw_dump_ptr += drv_info_size;
1182         strcpy(fw_dump_ptr, "\n========End dump========\n");
1183         fw_dump_ptr += strlen("\n========End dump========\n");
1184
1185         for (idx = 0; idx < adapter->num_mem_types; idx++) {
1186                 struct memory_type_mapping *entry =
1187                                         &adapter->mem_type_mapping_tbl[idx];
1188
1189                 if (entry->mem_ptr) {
1190                         strcpy(fw_dump_ptr, "========Start dump ");
1191                         fw_dump_ptr += strlen("========Start dump ");
1192
1193                         strcpy(fw_dump_ptr, entry->mem_name);
1194                         fw_dump_ptr += strlen(entry->mem_name);
1195
1196                         strcpy(fw_dump_ptr, "========\n");
1197                         fw_dump_ptr += strlen("========\n");
1198
1199                         memcpy(fw_dump_ptr, entry->mem_ptr, entry->mem_size);
1200                         fw_dump_ptr += entry->mem_size;
1201
1202                         strcpy(fw_dump_ptr, "\n========End dump========\n");
1203                         fw_dump_ptr += strlen("\n========End dump========\n");
1204                 }
1205         }
1206
1207         /* device dump data will be free in device coredump release function
1208          * after 5 min
1209          */
1210         dev_coredumpv(adapter->dev, dump_data, dump_len, GFP_KERNEL);
1211         mwifiex_dbg(adapter, MSG,
1212                     "== mwifiex dump information to /sys/class/devcoredump end");
1213
1214 done:
1215         for (idx = 0; idx < adapter->num_mem_types; idx++) {
1216                 struct memory_type_mapping *entry =
1217                         &adapter->mem_type_mapping_tbl[idx];
1218
1219                 vfree(entry->mem_ptr);
1220                 entry->mem_ptr = NULL;
1221                 entry->mem_size = 0;
1222         }
1223
1224         vfree(drv_info);
1225 }
1226 EXPORT_SYMBOL_GPL(mwifiex_upload_device_dump);
1227
1228 /*
1229  * CFG802.11 network device handler for statistics retrieval.
1230  */
1231 static struct net_device_stats *mwifiex_get_stats(struct net_device *dev)
1232 {
1233         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1234
1235         return &priv->stats;
1236 }
1237
1238 static u16
1239 mwifiex_netdev_select_wmm_queue(struct net_device *dev, struct sk_buff *skb,
1240                                 void *accel_priv, select_queue_fallback_t fallback)
1241 {
1242         skb->priority = cfg80211_classify8021d(skb, NULL);
1243         return mwifiex_1d_to_wmm_queue[skb->priority];
1244 }
1245
1246 /* Network device handlers */
1247 static const struct net_device_ops mwifiex_netdev_ops = {
1248         .ndo_open = mwifiex_open,
1249         .ndo_stop = mwifiex_close,
1250         .ndo_start_xmit = mwifiex_hard_start_xmit,
1251         .ndo_set_mac_address = mwifiex_set_mac_address,
1252         .ndo_validate_addr = eth_validate_addr,
1253         .ndo_tx_timeout = mwifiex_tx_timeout,
1254         .ndo_get_stats = mwifiex_get_stats,
1255         .ndo_set_rx_mode = mwifiex_set_multicast_list,
1256         .ndo_select_queue = mwifiex_netdev_select_wmm_queue,
1257 };
1258
1259 /*
1260  * This function initializes the private structure parameters.
1261  *
1262  * The following wait queues are initialized -
1263  *      - IOCTL wait queue
1264  *      - Command wait queue
1265  *      - Statistics wait queue
1266  *
1267  * ...and the following default parameters are set -
1268  *      - Current key index     : Set to 0
1269  *      - Rate index            : Set to auto
1270  *      - Media connected       : Set to disconnected
1271  *      - Adhoc link sensed     : Set to false
1272  *      - Nick name             : Set to null
1273  *      - Number of Tx timeout  : Set to 0
1274  *      - Device address        : Set to current address
1275  *      - Rx histogram statistc : Set to 0
1276  *
1277  * In addition, the CFG80211 work queue is also created.
1278  */
1279 void mwifiex_init_priv_params(struct mwifiex_private *priv,
1280                               struct net_device *dev)
1281 {
1282         dev->netdev_ops = &mwifiex_netdev_ops;
1283         dev->needs_free_netdev = true;
1284         /* Initialize private structure */
1285         priv->current_key_index = 0;
1286         priv->media_connected = false;
1287         memset(priv->mgmt_ie, 0,
1288                sizeof(struct mwifiex_ie) * MAX_MGMT_IE_INDEX);
1289         priv->beacon_idx = MWIFIEX_AUTO_IDX_MASK;
1290         priv->proberesp_idx = MWIFIEX_AUTO_IDX_MASK;
1291         priv->assocresp_idx = MWIFIEX_AUTO_IDX_MASK;
1292         priv->gen_idx = MWIFIEX_AUTO_IDX_MASK;
1293         priv->num_tx_timeout = 0;
1294         ether_addr_copy(priv->curr_addr, priv->adapter->perm_addr);
1295         memcpy(dev->dev_addr, priv->curr_addr, ETH_ALEN);
1296
1297         if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA ||
1298             GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_UAP) {
1299                 priv->hist_data = kmalloc(sizeof(*priv->hist_data), GFP_KERNEL);
1300                 if (priv->hist_data)
1301                         mwifiex_hist_data_reset(priv);
1302         }
1303 }
1304
1305 /*
1306  * This function check if command is pending.
1307  */
1308 int is_command_pending(struct mwifiex_adapter *adapter)
1309 {
1310         unsigned long flags;
1311         int is_cmd_pend_q_empty;
1312
1313         spin_lock_irqsave(&adapter->cmd_pending_q_lock, flags);
1314         is_cmd_pend_q_empty = list_empty(&adapter->cmd_pending_q);
1315         spin_unlock_irqrestore(&adapter->cmd_pending_q_lock, flags);
1316
1317         return !is_cmd_pend_q_empty;
1318 }
1319
1320 /*
1321  * This is the RX work queue function.
1322  *
1323  * It handles the RX operations.
1324  */
1325 static void mwifiex_rx_work_queue(struct work_struct *work)
1326 {
1327         struct mwifiex_adapter *adapter =
1328                 container_of(work, struct mwifiex_adapter, rx_work);
1329
1330         if (adapter->surprise_removed)
1331                 return;
1332         mwifiex_process_rx(adapter);
1333 }
1334
1335 /*
1336  * This is the main work queue function.
1337  *
1338  * It handles the main process, which in turn handles the complete
1339  * driver operations.
1340  */
1341 static void mwifiex_main_work_queue(struct work_struct *work)
1342 {
1343         struct mwifiex_adapter *adapter =
1344                 container_of(work, struct mwifiex_adapter, main_work);
1345
1346         if (adapter->surprise_removed)
1347                 return;
1348         mwifiex_main_process(adapter);
1349 }
1350
1351 /*
1352  * This function gets called during PCIe function level reset. Required
1353  * code is extracted from mwifiex_remove_card()
1354  */
1355 int
1356 mwifiex_shutdown_sw(struct mwifiex_adapter *adapter)
1357 {
1358         struct mwifiex_private *priv;
1359         int i;
1360
1361         if (!adapter)
1362                 goto exit_return;
1363
1364         wait_for_completion(adapter->fw_done);
1365         /* Caller should ensure we aren't suspending while this happens */
1366         reinit_completion(adapter->fw_done);
1367
1368         priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
1369         mwifiex_deauthenticate(priv, NULL);
1370
1371         /* We can no longer handle interrupts once we start doing the teardown
1372          * below.
1373          */
1374         if (adapter->if_ops.disable_int)
1375                 adapter->if_ops.disable_int(adapter);
1376
1377         adapter->surprise_removed = true;
1378         mwifiex_terminate_workqueue(adapter);
1379
1380         /* Stop data */
1381         for (i = 0; i < adapter->priv_num; i++) {
1382                 priv = adapter->priv[i];
1383                 if (priv && priv->netdev) {
1384                         mwifiex_stop_net_dev_queue(priv->netdev, adapter);
1385                         if (netif_carrier_ok(priv->netdev))
1386                                 netif_carrier_off(priv->netdev);
1387                         netif_device_detach(priv->netdev);
1388                 }
1389         }
1390
1391         mwifiex_dbg(adapter, CMD, "cmd: calling mwifiex_shutdown_drv...\n");
1392
1393         mwifiex_shutdown_drv(adapter);
1394         if (adapter->if_ops.down_dev)
1395                 adapter->if_ops.down_dev(adapter);
1396
1397         mwifiex_dbg(adapter, CMD, "cmd: mwifiex_shutdown_drv done\n");
1398         if (atomic_read(&adapter->rx_pending) ||
1399             atomic_read(&adapter->tx_pending) ||
1400             atomic_read(&adapter->cmd_pending)) {
1401                 mwifiex_dbg(adapter, ERROR,
1402                             "rx_pending=%d, tx_pending=%d,\t"
1403                             "cmd_pending=%d\n",
1404                             atomic_read(&adapter->rx_pending),
1405                             atomic_read(&adapter->tx_pending),
1406                             atomic_read(&adapter->cmd_pending));
1407         }
1408
1409         for (i = 0; i < adapter->priv_num; i++) {
1410                 priv = adapter->priv[i];
1411                 if (!priv)
1412                         continue;
1413                 rtnl_lock();
1414                 if (priv->netdev &&
1415                     priv->wdev.iftype != NL80211_IFTYPE_UNSPECIFIED)
1416                         mwifiex_del_virtual_intf(adapter->wiphy, &priv->wdev);
1417                 rtnl_unlock();
1418         }
1419         vfree(adapter->chan_stats);
1420
1421         mwifiex_dbg(adapter, INFO, "%s, successful\n", __func__);
1422 exit_return:
1423         return 0;
1424 }
1425 EXPORT_SYMBOL_GPL(mwifiex_shutdown_sw);
1426
1427 /* This function gets called during PCIe function level reset. Required
1428  * code is extracted from mwifiex_add_card()
1429  */
1430 int
1431 mwifiex_reinit_sw(struct mwifiex_adapter *adapter)
1432 {
1433         int ret;
1434
1435         mwifiex_init_lock_list(adapter);
1436         if (adapter->if_ops.up_dev)
1437                 adapter->if_ops.up_dev(adapter);
1438
1439         adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING;
1440         adapter->surprise_removed = false;
1441         init_waitqueue_head(&adapter->init_wait_q);
1442         adapter->is_suspended = false;
1443         adapter->hs_activated = false;
1444         adapter->is_cmd_timedout = 0;
1445         init_waitqueue_head(&adapter->hs_activate_wait_q);
1446         init_waitqueue_head(&adapter->cmd_wait_q.wait);
1447         adapter->cmd_wait_q.status = 0;
1448         adapter->scan_wait_q_woken = false;
1449
1450         if ((num_possible_cpus() > 1) || adapter->iface_type == MWIFIEX_USB)
1451                 adapter->rx_work_enabled = true;
1452
1453         adapter->workqueue =
1454                 alloc_workqueue("MWIFIEX_WORK_QUEUE",
1455                                 WQ_HIGHPRI | WQ_MEM_RECLAIM | WQ_UNBOUND, 1);
1456         if (!adapter->workqueue)
1457                 goto err_kmalloc;
1458
1459         INIT_WORK(&adapter->main_work, mwifiex_main_work_queue);
1460
1461         if (adapter->rx_work_enabled) {
1462                 adapter->rx_workqueue = alloc_workqueue("MWIFIEX_RX_WORK_QUEUE",
1463                                                         WQ_HIGHPRI |
1464                                                         WQ_MEM_RECLAIM |
1465                                                         WQ_UNBOUND, 1);
1466                 if (!adapter->rx_workqueue)
1467                         goto err_kmalloc;
1468                 INIT_WORK(&adapter->rx_work, mwifiex_rx_work_queue);
1469         }
1470
1471         /* Register the device. Fill up the private data structure with
1472          * relevant information from the card. Some code extracted from
1473          * mwifiex_register_dev()
1474          */
1475         mwifiex_dbg(adapter, INFO, "%s, mwifiex_init_hw_fw()...\n", __func__);
1476
1477         if (mwifiex_init_hw_fw(adapter, false)) {
1478                 mwifiex_dbg(adapter, ERROR,
1479                             "%s: firmware init failed\n", __func__);
1480                 goto err_init_fw;
1481         }
1482
1483         /* _mwifiex_fw_dpc() does its own cleanup */
1484         ret = _mwifiex_fw_dpc(adapter->firmware, adapter);
1485         if (ret) {
1486                 pr_err("Failed to bring up adapter: %d\n", ret);
1487                 return ret;
1488         }
1489         mwifiex_dbg(adapter, INFO, "%s, successful\n", __func__);
1490
1491         return 0;
1492
1493 err_init_fw:
1494         mwifiex_dbg(adapter, ERROR, "info: %s: unregister device\n", __func__);
1495         if (adapter->if_ops.unregister_dev)
1496                 adapter->if_ops.unregister_dev(adapter);
1497
1498 err_kmalloc:
1499         adapter->surprise_removed = true;
1500         mwifiex_terminate_workqueue(adapter);
1501         if (adapter->hw_status == MWIFIEX_HW_STATUS_READY) {
1502                 mwifiex_dbg(adapter, ERROR,
1503                             "info: %s: shutdown mwifiex\n", __func__);
1504                 mwifiex_shutdown_drv(adapter);
1505         }
1506
1507         complete_all(adapter->fw_done);
1508         mwifiex_dbg(adapter, INFO, "%s, error\n", __func__);
1509
1510         return -1;
1511 }
1512 EXPORT_SYMBOL_GPL(mwifiex_reinit_sw);
1513
1514 static irqreturn_t mwifiex_irq_wakeup_handler(int irq, void *priv)
1515 {
1516         struct mwifiex_adapter *adapter = priv;
1517
1518         dev_dbg(adapter->dev, "%s: wake by wifi", __func__);
1519         adapter->wake_by_wifi = true;
1520         disable_irq_nosync(irq);
1521
1522         /* Notify PM core we are wakeup source */
1523         pm_wakeup_event(adapter->dev, 0);
1524         pm_system_wakeup();
1525
1526         return IRQ_HANDLED;
1527 }
1528
1529 static void mwifiex_probe_of(struct mwifiex_adapter *adapter)
1530 {
1531         int ret;
1532         struct device *dev = adapter->dev;
1533
1534         if (!dev->of_node)
1535                 goto err_exit;
1536
1537         adapter->dt_node = dev->of_node;
1538         adapter->irq_wakeup = irq_of_parse_and_map(adapter->dt_node, 0);
1539         if (!adapter->irq_wakeup) {
1540                 dev_dbg(dev, "fail to parse irq_wakeup from device tree\n");
1541                 goto err_exit;
1542         }
1543
1544         ret = devm_request_irq(dev, adapter->irq_wakeup,
1545                                mwifiex_irq_wakeup_handler, IRQF_TRIGGER_LOW,
1546                                "wifi_wake", adapter);
1547         if (ret) {
1548                 dev_err(dev, "Failed to request irq_wakeup %d (%d)\n",
1549                         adapter->irq_wakeup, ret);
1550                 goto err_exit;
1551         }
1552
1553         disable_irq(adapter->irq_wakeup);
1554         if (device_init_wakeup(dev, true)) {
1555                 dev_err(dev, "fail to init wakeup for mwifiex\n");
1556                 goto err_exit;
1557         }
1558         return;
1559
1560 err_exit:
1561         adapter->irq_wakeup = -1;
1562 }
1563
1564 /*
1565  * This function adds the card.
1566  *
1567  * This function follows the following major steps to set up the device -
1568  *      - Initialize software. This includes probing the card, registering
1569  *        the interface operations table, and allocating/initializing the
1570  *        adapter structure
1571  *      - Set up the netlink socket
1572  *      - Create and start the main work queue
1573  *      - Register the device
1574  *      - Initialize firmware and hardware
1575  *      - Add logical interfaces
1576  */
1577 int
1578 mwifiex_add_card(void *card, struct completion *fw_done,
1579                  struct mwifiex_if_ops *if_ops, u8 iface_type,
1580                  struct device *dev)
1581 {
1582         struct mwifiex_adapter *adapter;
1583
1584         if (mwifiex_register(card, dev, if_ops, (void **)&adapter)) {
1585                 pr_err("%s: software init failed\n", __func__);
1586                 goto err_init_sw;
1587         }
1588
1589         mwifiex_probe_of(adapter);
1590
1591         adapter->iface_type = iface_type;
1592         adapter->fw_done = fw_done;
1593
1594         adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING;
1595         adapter->surprise_removed = false;
1596         init_waitqueue_head(&adapter->init_wait_q);
1597         adapter->is_suspended = false;
1598         adapter->hs_activated = false;
1599         init_waitqueue_head(&adapter->hs_activate_wait_q);
1600         init_waitqueue_head(&adapter->cmd_wait_q.wait);
1601         adapter->cmd_wait_q.status = 0;
1602         adapter->scan_wait_q_woken = false;
1603
1604         if ((num_possible_cpus() > 1) || adapter->iface_type == MWIFIEX_USB) {
1605                 adapter->rx_work_enabled = true;
1606                 pr_notice("rx work enabled, cpus %d\n", num_possible_cpus());
1607         }
1608
1609         adapter->workqueue =
1610                 alloc_workqueue("MWIFIEX_WORK_QUEUE",
1611                                 WQ_HIGHPRI | WQ_MEM_RECLAIM | WQ_UNBOUND, 1);
1612         if (!adapter->workqueue)
1613                 goto err_kmalloc;
1614
1615         INIT_WORK(&adapter->main_work, mwifiex_main_work_queue);
1616
1617         if (adapter->rx_work_enabled) {
1618                 adapter->rx_workqueue = alloc_workqueue("MWIFIEX_RX_WORK_QUEUE",
1619                                                         WQ_HIGHPRI |
1620                                                         WQ_MEM_RECLAIM |
1621                                                         WQ_UNBOUND, 1);
1622                 if (!adapter->rx_workqueue)
1623                         goto err_kmalloc;
1624
1625                 INIT_WORK(&adapter->rx_work, mwifiex_rx_work_queue);
1626         }
1627
1628         /* Register the device. Fill up the private data structure with relevant
1629            information from the card. */
1630         if (adapter->if_ops.register_dev(adapter)) {
1631                 pr_err("%s: failed to register mwifiex device\n", __func__);
1632                 goto err_registerdev;
1633         }
1634
1635         if (mwifiex_init_hw_fw(adapter, true)) {
1636                 pr_err("%s: firmware init failed\n", __func__);
1637                 goto err_init_fw;
1638         }
1639
1640         return 0;
1641
1642 err_init_fw:
1643         pr_debug("info: %s: unregister device\n", __func__);
1644         if (adapter->if_ops.unregister_dev)
1645                 adapter->if_ops.unregister_dev(adapter);
1646 err_registerdev:
1647         adapter->surprise_removed = true;
1648         mwifiex_terminate_workqueue(adapter);
1649         if (adapter->hw_status == MWIFIEX_HW_STATUS_READY) {
1650                 pr_debug("info: %s: shutdown mwifiex\n", __func__);
1651                 mwifiex_shutdown_drv(adapter);
1652         }
1653 err_kmalloc:
1654         mwifiex_free_adapter(adapter);
1655
1656 err_init_sw:
1657
1658         return -1;
1659 }
1660 EXPORT_SYMBOL_GPL(mwifiex_add_card);
1661
1662 /*
1663  * This function removes the card.
1664  *
1665  * This function follows the following major steps to remove the device -
1666  *      - Stop data traffic
1667  *      - Shutdown firmware
1668  *      - Remove the logical interfaces
1669  *      - Terminate the work queue
1670  *      - Unregister the device
1671  *      - Free the adapter structure
1672  */
1673 int mwifiex_remove_card(struct mwifiex_adapter *adapter)
1674 {
1675         struct mwifiex_private *priv = NULL;
1676         int i;
1677
1678         if (!adapter)
1679                 goto exit_remove;
1680
1681         /* We can no longer handle interrupts once we start doing the teardown
1682          * below. */
1683         if (adapter->if_ops.disable_int)
1684                 adapter->if_ops.disable_int(adapter);
1685
1686         adapter->surprise_removed = true;
1687
1688         mwifiex_terminate_workqueue(adapter);
1689
1690         /* Stop data */
1691         for (i = 0; i < adapter->priv_num; i++) {
1692                 priv = adapter->priv[i];
1693                 if (priv && priv->netdev) {
1694                         mwifiex_stop_net_dev_queue(priv->netdev, adapter);
1695                         if (netif_carrier_ok(priv->netdev))
1696                                 netif_carrier_off(priv->netdev);
1697                 }
1698         }
1699
1700         mwifiex_dbg(adapter, CMD,
1701                     "cmd: calling mwifiex_shutdown_drv...\n");
1702
1703         mwifiex_shutdown_drv(adapter);
1704         mwifiex_dbg(adapter, CMD,
1705                     "cmd: mwifiex_shutdown_drv done\n");
1706         if (atomic_read(&adapter->rx_pending) ||
1707             atomic_read(&adapter->tx_pending) ||
1708             atomic_read(&adapter->cmd_pending)) {
1709                 mwifiex_dbg(adapter, ERROR,
1710                             "rx_pending=%d, tx_pending=%d,\t"
1711                             "cmd_pending=%d\n",
1712                             atomic_read(&adapter->rx_pending),
1713                             atomic_read(&adapter->tx_pending),
1714                             atomic_read(&adapter->cmd_pending));
1715         }
1716
1717         for (i = 0; i < adapter->priv_num; i++) {
1718                 priv = adapter->priv[i];
1719
1720                 if (!priv)
1721                         continue;
1722
1723                 rtnl_lock();
1724                 if (priv->netdev &&
1725                     priv->wdev.iftype != NL80211_IFTYPE_UNSPECIFIED)
1726                         mwifiex_del_virtual_intf(adapter->wiphy, &priv->wdev);
1727                 rtnl_unlock();
1728         }
1729         vfree(adapter->chan_stats);
1730
1731         wiphy_unregister(adapter->wiphy);
1732         wiphy_free(adapter->wiphy);
1733
1734         if (adapter->irq_wakeup >= 0)
1735                 device_init_wakeup(adapter->dev, false);
1736
1737         /* Unregister device */
1738         mwifiex_dbg(adapter, INFO,
1739                     "info: unregister device\n");
1740         if (adapter->if_ops.unregister_dev)
1741                 adapter->if_ops.unregister_dev(adapter);
1742         /* Free adapter structure */
1743         mwifiex_dbg(adapter, INFO,
1744                     "info: free adapter\n");
1745         mwifiex_free_adapter(adapter);
1746
1747 exit_remove:
1748         return 0;
1749 }
1750 EXPORT_SYMBOL_GPL(mwifiex_remove_card);
1751
1752 void _mwifiex_dbg(const struct mwifiex_adapter *adapter, int mask,
1753                   const char *fmt, ...)
1754 {
1755         struct va_format vaf;
1756         va_list args;
1757
1758         if (!(adapter->debug_mask & mask))
1759                 return;
1760
1761         va_start(args, fmt);
1762
1763         vaf.fmt = fmt;
1764         vaf.va = &args;
1765
1766         if (adapter->dev)
1767                 dev_info(adapter->dev, "%pV", &vaf);
1768         else
1769                 pr_info("%pV", &vaf);
1770
1771         va_end(args);
1772 }
1773 EXPORT_SYMBOL_GPL(_mwifiex_dbg);
1774
1775 /*
1776  * This function initializes the module.
1777  *
1778  * The debug FS is also initialized if configured.
1779  */
1780 static int
1781 mwifiex_init_module(void)
1782 {
1783 #ifdef CONFIG_DEBUG_FS
1784         mwifiex_debugfs_init();
1785 #endif
1786         return 0;
1787 }
1788
1789 /*
1790  * This function cleans up the module.
1791  *
1792  * The debug FS is removed if available.
1793  */
1794 static void
1795 mwifiex_cleanup_module(void)
1796 {
1797 #ifdef CONFIG_DEBUG_FS
1798         mwifiex_debugfs_remove();
1799 #endif
1800 }
1801
1802 module_init(mwifiex_init_module);
1803 module_exit(mwifiex_cleanup_module);
1804
1805 MODULE_AUTHOR("Marvell International Ltd.");
1806 MODULE_DESCRIPTION("Marvell WiFi-Ex Driver version " VERSION);
1807 MODULE_VERSION(VERSION);
1808 MODULE_LICENSE("GPL v2");