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

   1 /*
   2  * NXP Wireless LAN device driver: major functions
   3  *
   4  * Copyright 2011-2020 NXP
   5  *
   6  * This software file (the "File") is distributed by NXP
   7  * 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 bool aggr_ctrl;
  48 module_param(aggr_ctrl, bool, 0000);
  49 MODULE_PARM_DESC(aggr_ctrl, "usb tx aggregation enable:1, disable:0");
  50
  51 const u16 mwifiex_1d_to_wmm_queue[8] = { 1, 0, 0, 1, 2, 2, 3, 3 };
  52
  53 /*
  54  * This function registers the device and performs all the necessary
  55  * initializations.
  56  *
  57  * The following initialization operations are performed -
  58  *      - Allocate adapter structure
  59  *      - Save interface specific operations table in adapter
  60  *      - Call interface specific initialization routine
  61  *      - Allocate private structures
  62  *      - Set default adapter structure parameters
  63  *      - Initialize locks
  64  *
  65  * In case of any errors during inittialization, this function also ensures
  66  * proper cleanup before exiting.
  67  */
  68 static int mwifiex_register(void *card, struct device *dev,
  69                             struct mwifiex_if_ops *if_ops, void **padapter)
  70 {
  71         struct mwifiex_adapter *adapter;
  72         int i;
  73
  74         adapter = kzalloc(sizeof(struct mwifiex_adapter), GFP_KERNEL);
  75         if (!adapter)
  76                 return -ENOMEM;
  77
  78         *padapter = adapter;
  79         adapter->dev = dev;
  80         adapter->card = card;
  81
  82         /* Save interface specific operations in adapter */
  83         memmove(&adapter->if_ops, if_ops, sizeof(struct mwifiex_if_ops));
  84         adapter->debug_mask = debug_mask;
  85
  86         /* card specific initialization has been deferred until now .. */
  87         if (adapter->if_ops.init_if)
  88                 if (adapter->if_ops.init_if(adapter))
  89                         goto error;
  90
  91         adapter->priv_num = 0;
  92
  93         for (i = 0; i < MWIFIEX_MAX_BSS_NUM; i++) {
  94                 /* Allocate memory for private structure */
  95                 adapter->priv[i] =
  96                         kzalloc(sizeof(struct mwifiex_private), GFP_KERNEL);
  97                 if (!adapter->priv[i])
  98                         goto error;
  99
 100                 adapter->priv[i]->adapter = adapter;
 101                 adapter->priv_num++;
 102         }
 103         mwifiex_init_lock_list(adapter);
 104
 105         timer_setup(&adapter->cmd_timer, mwifiex_cmd_timeout_func, 0);
 106
 107         return 0;
 108
 109 error:
 110         mwifiex_dbg(adapter, ERROR,
 111                     "info: leave mwifiex_register with error\n");
 112
 113         for (i = 0; i < adapter->priv_num; i++)
 114                 kfree(adapter->priv[i]);
 115
 116         kfree(adapter);
 117
 118         return -1;
 119 }
 120
 121 /*
 122  * This function unregisters the device and performs all the necessary
 123  * cleanups.
 124  *
 125  * The following cleanup operations are performed -
 126  *      - Free the timers
 127  *      - Free beacon buffers
 128  *      - Free private structures
 129  *      - Free adapter structure
 130  */
 131 static int mwifiex_unregister(struct mwifiex_adapter *adapter)
 132 {
 133         s32 i;
 134
 135         if (adapter->if_ops.cleanup_if)
 136                 adapter->if_ops.cleanup_if(adapter);
 137
 138         del_timer_sync(&adapter->cmd_timer);
 139
 140         /* Free private structures */
 141         for (i = 0; i < adapter->priv_num; i++) {
 142                 if (adapter->priv[i]) {
 143                         mwifiex_free_curr_bcn(adapter->priv[i]);
 144                         kfree(adapter->priv[i]);
 145                 }
 146         }
 147
 148         if (adapter->nd_info) {
 149                 for (i = 0 ; i < adapter->nd_info->n_matches ; i++)
 150                         kfree(adapter->nd_info->matches[i]);
 151                 kfree(adapter->nd_info);
 152                 adapter->nd_info = NULL;
 153         }
 154
 155         kfree(adapter->regd);
 156
 157         kfree(adapter);
 158         return 0;
 159 }
 160
 161 void mwifiex_queue_main_work(struct mwifiex_adapter *adapter)
 162 {
 163         unsigned long flags;
 164
 165         spin_lock_irqsave(&adapter->main_proc_lock, flags);
 166         if (adapter->mwifiex_processing) {
 167                 adapter->more_task_flag = true;
 168                 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
 169         } else {
 170                 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
 171                 queue_work(adapter->workqueue, &adapter->main_work);
 172         }
 173 }
 174 EXPORT_SYMBOL_GPL(mwifiex_queue_main_work);
 175
 176 static void mwifiex_queue_rx_work(struct mwifiex_adapter *adapter)
 177 {
 178         spin_lock_bh(&adapter->rx_proc_lock);
 179         if (adapter->rx_processing) {
 180                 spin_unlock_bh(&adapter->rx_proc_lock);
 181         } else {
 182                 spin_unlock_bh(&adapter->rx_proc_lock);
 183                 queue_work(adapter->rx_workqueue, &adapter->rx_work);
 184         }
 185 }
 186
 187 static int mwifiex_process_rx(struct mwifiex_adapter *adapter)
 188 {
 189         struct sk_buff *skb;
 190         struct mwifiex_rxinfo *rx_info;
 191
 192         spin_lock_bh(&adapter->rx_proc_lock);
 193         if (adapter->rx_processing || adapter->rx_locked) {
 194                 spin_unlock_bh(&adapter->rx_proc_lock);
 195                 goto exit_rx_proc;
 196         } else {
 197                 adapter->rx_processing = true;
 198                 spin_unlock_bh(&adapter->rx_proc_lock);
 199         }
 200
 201         /* Check for Rx data */
 202         while ((skb = skb_dequeue(&adapter->rx_data_q))) {
 203                 atomic_dec(&adapter->rx_pending);
 204                 if ((adapter->delay_main_work ||
 205                      adapter->iface_type == MWIFIEX_USB) &&
 206                     (atomic_read(&adapter->rx_pending) < LOW_RX_PENDING)) {
 207                         if (adapter->if_ops.submit_rem_rx_urbs)
 208                                 adapter->if_ops.submit_rem_rx_urbs(adapter);
 209                         adapter->delay_main_work = false;
 210                         mwifiex_queue_main_work(adapter);
 211                 }
 212                 rx_info = MWIFIEX_SKB_RXCB(skb);
 213                 if (rx_info->buf_type == MWIFIEX_TYPE_AGGR_DATA) {
 214                         if (adapter->if_ops.deaggr_pkt)
 215                                 adapter->if_ops.deaggr_pkt(adapter, skb);
 216                         dev_kfree_skb_any(skb);
 217                 } else {
 218                         mwifiex_handle_rx_packet(adapter, skb);
 219                 }
 220         }
 221         spin_lock_bh(&adapter->rx_proc_lock);
 222         adapter->rx_processing = false;
 223         spin_unlock_bh(&adapter->rx_proc_lock);
 224
 225 exit_rx_proc:
 226         return 0;
 227 }
 228
 229 /*
 230  * The main process.
 231  *
 232  * This function is the main procedure of the driver and handles various driver
 233  * operations. It runs in a loop and provides the core functionalities.
 234  *
 235  * The main responsibilities of this function are -
 236  *      - Ensure concurrency control
 237  *      - Handle pending interrupts and call interrupt handlers
 238  *      - Wake up the card if required
 239  *      - Handle command responses and call response handlers
 240  *      - Handle events and call event handlers
 241  *      - Execute pending commands
 242  *      - Transmit pending data packets
 243  */
 244 int mwifiex_main_process(struct mwifiex_adapter *adapter)
 245 {
 246         int ret = 0;
 247         unsigned long flags;
 248
 249         spin_lock_irqsave(&adapter->main_proc_lock, flags);
 250
 251         /* Check if already processing */
 252         if (adapter->mwifiex_processing || adapter->main_locked) {
 253                 adapter->more_task_flag = true;
 254                 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
 255                 return 0;
 256         } else {
 257                 adapter->mwifiex_processing = true;
 258                 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
 259         }
 260 process_start:
 261         do {
 262                 if (adapter->hw_status == MWIFIEX_HW_STATUS_NOT_READY)
 263                         break;
 264
 265                 /* For non-USB interfaces, If we process interrupts first, it
 266                  * would increase RX pending even further. Avoid this by
 267                  * checking if rx_pending has crossed high threshold and
 268                  * schedule rx work queue and then process interrupts.
 269                  * For USB interface, there are no interrupts. We already have
 270                  * HIGH_RX_PENDING check in usb.c
 271                  */
 272                 if (atomic_read(&adapter->rx_pending) >= HIGH_RX_PENDING &&
 273                     adapter->iface_type != MWIFIEX_USB) {
 274                         adapter->delay_main_work = true;
 275                         mwifiex_queue_rx_work(adapter);
 276                         break;
 277                 }
 278
 279                 /* Handle pending interrupt if any */
 280                 if (adapter->int_status) {
 281                         if (adapter->hs_activated)
 282                                 mwifiex_process_hs_config(adapter);
 283                         if (adapter->if_ops.process_int_status)
 284                                 adapter->if_ops.process_int_status(adapter);
 285                 }
 286
 287                 if (adapter->rx_work_enabled && adapter->data_received)
 288                         mwifiex_queue_rx_work(adapter);
 289
 290                 /* Need to wake up the card ? */
 291                 if ((adapter->ps_state == PS_STATE_SLEEP) &&
 292                     (adapter->pm_wakeup_card_req &&
 293                      !adapter->pm_wakeup_fw_try) &&
 294                     (is_command_pending(adapter) ||
 295                      !skb_queue_empty(&adapter->tx_data_q) ||
 296                      !mwifiex_bypass_txlist_empty(adapter) ||
 297                      !mwifiex_wmm_lists_empty(adapter))) {
 298                         adapter->pm_wakeup_fw_try = true;
 299                         mod_timer(&adapter->wakeup_timer, jiffies + (HZ*3));
 300                         adapter->if_ops.wakeup(adapter);
 301                         continue;
 302                 }
 303
 304                 if (IS_CARD_RX_RCVD(adapter)) {
 305                         adapter->data_received = false;
 306                         adapter->pm_wakeup_fw_try = false;
 307                         del_timer(&adapter->wakeup_timer);
 308                         if (adapter->ps_state == PS_STATE_SLEEP)
 309                                 adapter->ps_state = PS_STATE_AWAKE;
 310                 } else {
 311                         /* We have tried to wakeup the card already */
 312                         if (adapter->pm_wakeup_fw_try)
 313                                 break;
 314                         if (adapter->ps_state == PS_STATE_PRE_SLEEP)
 315                                 mwifiex_check_ps_cond(adapter);
 316
 317                         if (adapter->ps_state != PS_STATE_AWAKE)
 318                                 break;
 319                         if (adapter->tx_lock_flag) {
 320                                 if (adapter->iface_type == MWIFIEX_USB) {
 321                                         if (!adapter->usb_mc_setup)
 322                                                 break;
 323                                 } else
 324                                         break;
 325                         }
 326
 327                         if ((!adapter->scan_chan_gap_enabled &&
 328                              adapter->scan_processing) || adapter->data_sent ||
 329                              mwifiex_is_tdls_chan_switching
 330                              (mwifiex_get_priv(adapter,
 331                                                MWIFIEX_BSS_ROLE_STA)) ||
 332                             (mwifiex_wmm_lists_empty(adapter) &&
 333                              mwifiex_bypass_txlist_empty(adapter) &&
 334                              skb_queue_empty(&adapter->tx_data_q))) {
 335                                 if (adapter->cmd_sent || adapter->curr_cmd ||
 336                                         !mwifiex_is_send_cmd_allowed
 337                                                 (mwifiex_get_priv(adapter,
 338                                                 MWIFIEX_BSS_ROLE_STA)) ||
 339                                     (!is_command_pending(adapter)))
 340                                         break;
 341                         }
 342                 }
 343
 344                 /* Check for event */
 345                 if (adapter->event_received) {
 346                         adapter->event_received = false;
 347                         mwifiex_process_event(adapter);
 348                 }
 349
 350                 /* Check for Cmd Resp */
 351                 if (adapter->cmd_resp_received) {
 352                         adapter->cmd_resp_received = false;
 353                         mwifiex_process_cmdresp(adapter);
 354
 355                         /* call mwifiex back when init_fw is done */
 356                         if (adapter->hw_status == MWIFIEX_HW_STATUS_INIT_DONE) {
 357                                 adapter->hw_status = MWIFIEX_HW_STATUS_READY;
 358                                 mwifiex_init_fw_complete(adapter);
 359                         }
 360                 }
 361
 362                 /* Check if we need to confirm Sleep Request
 363                    received previously */
 364                 if (adapter->ps_state == PS_STATE_PRE_SLEEP)
 365                         mwifiex_check_ps_cond(adapter);
 366
 367                 /* * The ps_state may have been changed during processing of
 368                  * Sleep Request event.
 369                  */
 370                 if ((adapter->ps_state == PS_STATE_SLEEP) ||
 371                     (adapter->ps_state == PS_STATE_PRE_SLEEP) ||
 372                     (adapter->ps_state == PS_STATE_SLEEP_CFM)) {
 373                         continue;
 374                 }
 375
 376                 if (adapter->tx_lock_flag) {
 377                         if (adapter->iface_type == MWIFIEX_USB) {
 378                                 if (!adapter->usb_mc_setup)
 379                                         continue;
 380                         } else
 381                                 continue;
 382                 }
 383
 384                 if (!adapter->cmd_sent && !adapter->curr_cmd &&
 385                     mwifiex_is_send_cmd_allowed
 386                     (mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA))) {
 387                         if (mwifiex_exec_next_cmd(adapter) == -1) {
 388                                 ret = -1;
 389                                 break;
 390                         }
 391                 }
 392
 393                 /** If USB Multi channel setup ongoing,
 394                  *  wait for ready to tx data.
 395                  */
 396                 if (adapter->iface_type == MWIFIEX_USB &&
 397                     adapter->usb_mc_setup)
 398                         continue;
 399
 400                 if ((adapter->scan_chan_gap_enabled ||
 401                      !adapter->scan_processing) &&
 402                     !adapter->data_sent &&
 403                     !skb_queue_empty(&adapter->tx_data_q)) {
 404                         mwifiex_process_tx_queue(adapter);
 405                         if (adapter->hs_activated) {
 406                                 clear_bit(MWIFIEX_IS_HS_CONFIGURED,
 407                                           &adapter->work_flags);
 408                                 mwifiex_hs_activated_event
 409                                         (mwifiex_get_priv
 410                                         (adapter, MWIFIEX_BSS_ROLE_ANY),
 411                                         false);
 412                         }
 413                 }
 414
 415                 if ((adapter->scan_chan_gap_enabled ||
 416                      !adapter->scan_processing) &&
 417                     !adapter->data_sent &&
 418                     !mwifiex_bypass_txlist_empty(adapter) &&
 419                     !mwifiex_is_tdls_chan_switching
 420                         (mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA))) {
 421                         mwifiex_process_bypass_tx(adapter);
 422                         if (adapter->hs_activated) {
 423                                 clear_bit(MWIFIEX_IS_HS_CONFIGURED,
 424                                           &adapter->work_flags);
 425                                 mwifiex_hs_activated_event
 426                                         (mwifiex_get_priv
 427                                          (adapter, MWIFIEX_BSS_ROLE_ANY),
 428                                          false);
 429                         }
 430                 }
 431
 432                 if ((adapter->scan_chan_gap_enabled ||
 433                      !adapter->scan_processing) &&
 434                     !adapter->data_sent && !mwifiex_wmm_lists_empty(adapter) &&
 435                     !mwifiex_is_tdls_chan_switching
 436                         (mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA))) {
 437                         mwifiex_wmm_process_tx(adapter);
 438                         if (adapter->hs_activated) {
 439                                 clear_bit(MWIFIEX_IS_HS_CONFIGURED,
 440                                           &adapter->work_flags);
 441                                 mwifiex_hs_activated_event
 442                                         (mwifiex_get_priv
 443                                          (adapter, MWIFIEX_BSS_ROLE_ANY),
 444                                          false);
 445                         }
 446                 }
 447
 448                 if (adapter->delay_null_pkt && !adapter->cmd_sent &&
 449                     !adapter->curr_cmd && !is_command_pending(adapter) &&
 450                     (mwifiex_wmm_lists_empty(adapter) &&
 451                      mwifiex_bypass_txlist_empty(adapter) &&
 452                      skb_queue_empty(&adapter->tx_data_q))) {
 453                         if (!mwifiex_send_null_packet
 454                             (mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA),
 455                              MWIFIEX_TxPD_POWER_MGMT_NULL_PACKET |
 456                              MWIFIEX_TxPD_POWER_MGMT_LAST_PACKET)) {
 457                                 adapter->delay_null_pkt = false;
 458                                 adapter->ps_state = PS_STATE_SLEEP;
 459                         }
 460                         break;
 461                 }
 462         } while (true);
 463
 464         spin_lock_irqsave(&adapter->main_proc_lock, flags);
 465         if (adapter->more_task_flag) {
 466                 adapter->more_task_flag = false;
 467                 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
 468                 goto process_start;
 469         }
 470         adapter->mwifiex_processing = false;
 471         spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
 472
 473         return ret;
 474 }
 475 EXPORT_SYMBOL_GPL(mwifiex_main_process);
 476
 477 /*
 478  * This function frees the adapter structure.
 479  *
 480  * Additionally, this closes the netlink socket, frees the timers
 481  * and private structures.
 482  */
 483 static void mwifiex_free_adapter(struct mwifiex_adapter *adapter)
 484 {
 485         if (!adapter) {
 486                 pr_err("%s: adapter is NULL\n", __func__);
 487                 return;
 488         }
 489
 490         mwifiex_unregister(adapter);
 491         pr_debug("info: %s: free adapter\n", __func__);
 492 }
 493
 494 /*
 495  * This function cancels all works in the queue and destroys
 496  * the main workqueue.
 497  */
 498 static void mwifiex_terminate_workqueue(struct mwifiex_adapter *adapter)
 499 {
 500         if (adapter->workqueue) {
 501                 flush_workqueue(adapter->workqueue);
 502                 destroy_workqueue(adapter->workqueue);
 503                 adapter->workqueue = NULL;
 504         }
 505
 506         if (adapter->rx_workqueue) {
 507                 flush_workqueue(adapter->rx_workqueue);
 508                 destroy_workqueue(adapter->rx_workqueue);
 509                 adapter->rx_workqueue = NULL;
 510         }
 511 }
 512
 513 /*
 514  * This function gets firmware and initializes it.
 515  *
 516  * The main initialization steps followed are -
 517  *      - Download the correct firmware to card
 518  *      - Issue the init commands to firmware
 519  */
 520 static int _mwifiex_fw_dpc(const struct firmware *firmware, void *context)
 521 {
 522         int ret;
 523         char fmt[64];
 524         struct mwifiex_adapter *adapter = context;
 525         struct mwifiex_fw_image fw;
 526         bool init_failed = false;
 527         struct wireless_dev *wdev;
 528         struct completion *fw_done = adapter->fw_done;
 529
 530         if (!firmware) {
 531                 mwifiex_dbg(adapter, ERROR,
 532                             "Failed to get firmware %s\n", adapter->fw_name);
 533                 goto err_dnld_fw;
 534         }
 535
 536         memset(&fw, 0, sizeof(struct mwifiex_fw_image));
 537         adapter->firmware = firmware;
 538         fw.fw_buf = (u8 *) adapter->firmware->data;
 539         fw.fw_len = adapter->firmware->size;
 540
 541         if (adapter->if_ops.dnld_fw) {
 542                 ret = adapter->if_ops.dnld_fw(adapter, &fw);
 543         } else {
 544                 ret = mwifiex_dnld_fw(adapter, &fw);
 545         }
 546
 547         if (ret == -1)
 548                 goto err_dnld_fw;
 549
 550         mwifiex_dbg(adapter, MSG, "WLAN FW is active\n");
 551
 552         if (cal_data_cfg) {
 553                 if ((request_firmware(&adapter->cal_data, cal_data_cfg,
 554                                       adapter->dev)) < 0)
 555                         mwifiex_dbg(adapter, ERROR,
 556                                     "Cal data request_firmware() failed\n");
 557         }
 558
 559         /* enable host interrupt after fw dnld is successful */
 560         if (adapter->if_ops.enable_int) {
 561                 if (adapter->if_ops.enable_int(adapter))
 562                         goto err_dnld_fw;
 563         }
 564
 565         adapter->init_wait_q_woken = false;
 566         ret = mwifiex_init_fw(adapter);
 567         if (ret == -1) {
 568                 goto err_init_fw;
 569         } else if (!ret) {
 570                 adapter->hw_status = MWIFIEX_HW_STATUS_READY;
 571                 goto done;
 572         }
 573         /* Wait for mwifiex_init to complete */
 574         if (!adapter->mfg_mode) {
 575                 wait_event_interruptible(adapter->init_wait_q,
 576                                          adapter->init_wait_q_woken);
 577                 if (adapter->hw_status != MWIFIEX_HW_STATUS_READY)
 578                         goto err_init_fw;
 579         }
 580
 581         if (!adapter->wiphy) {
 582                 if (mwifiex_register_cfg80211(adapter)) {
 583                         mwifiex_dbg(adapter, ERROR,
 584                                     "cannot register with cfg80211\n");
 585                         goto err_init_fw;
 586                 }
 587         }
 588
 589         if (mwifiex_init_channel_scan_gap(adapter)) {
 590                 mwifiex_dbg(adapter, ERROR,
 591                             "could not init channel stats table\n");
 592                 goto err_init_chan_scan;
 593         }
 594
 595         if (driver_mode) {
 596                 driver_mode &= MWIFIEX_DRIVER_MODE_BITMASK;
 597                 driver_mode |= MWIFIEX_DRIVER_MODE_STA;
 598         }
 599
 600         rtnl_lock();
 601         /* Create station interface by default */
 602         wdev = mwifiex_add_virtual_intf(adapter->wiphy, "mlan%d", NET_NAME_ENUM,
 603                                         NL80211_IFTYPE_STATION, NULL);
 604         if (IS_ERR(wdev)) {
 605                 mwifiex_dbg(adapter, ERROR,
 606                             "cannot create default STA interface\n");
 607                 rtnl_unlock();
 608                 goto err_add_intf;
 609         }
 610
 611         if (driver_mode & MWIFIEX_DRIVER_MODE_UAP) {
 612                 wdev = mwifiex_add_virtual_intf(adapter->wiphy, "uap%d", NET_NAME_ENUM,
 613                                                 NL80211_IFTYPE_AP, NULL);
 614                 if (IS_ERR(wdev)) {
 615                         mwifiex_dbg(adapter, ERROR,
 616                                     "cannot create AP interface\n");
 617                         rtnl_unlock();
 618                         goto err_add_intf;
 619                 }
 620         }
 621
 622         if (driver_mode & MWIFIEX_DRIVER_MODE_P2P) {
 623                 wdev = mwifiex_add_virtual_intf(adapter->wiphy, "p2p%d", NET_NAME_ENUM,
 624                                                 NL80211_IFTYPE_P2P_CLIENT, NULL);
 625                 if (IS_ERR(wdev)) {
 626                         mwifiex_dbg(adapter, ERROR,
 627                                     "cannot create p2p client interface\n");
 628                         rtnl_unlock();
 629                         goto err_add_intf;
 630                 }
 631         }
 632         rtnl_unlock();
 633
 634         mwifiex_drv_get_driver_version(adapter, fmt, sizeof(fmt) - 1);
 635         mwifiex_dbg(adapter, MSG, "driver_version = %s\n", fmt);
 636         adapter->is_up = true;
 637         goto done;
 638
 639 err_add_intf:
 640         vfree(adapter->chan_stats);
 641 err_init_chan_scan:
 642         wiphy_unregister(adapter->wiphy);
 643         wiphy_free(adapter->wiphy);
 644 err_init_fw:
 645         if (adapter->if_ops.disable_int)
 646                 adapter->if_ops.disable_int(adapter);
 647 err_dnld_fw:
 648         mwifiex_dbg(adapter, ERROR,
 649                     "info: %s: unregister device\n", __func__);
 650         if (adapter->if_ops.unregister_dev)
 651                 adapter->if_ops.unregister_dev(adapter);
 652
 653         set_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags);
 654         mwifiex_terminate_workqueue(adapter);
 655
 656         if (adapter->hw_status == MWIFIEX_HW_STATUS_READY) {
 657                 pr_debug("info: %s: shutdown mwifiex\n", __func__);
 658                 mwifiex_shutdown_drv(adapter);
 659                 mwifiex_free_cmd_buffers(adapter);
 660         }
 661
 662         init_failed = true;
 663 done:
 664         if (adapter->cal_data) {
 665                 release_firmware(adapter->cal_data);
 666                 adapter->cal_data = NULL;
 667         }
 668         if (adapter->firmware) {
 669                 release_firmware(adapter->firmware);
 670                 adapter->firmware = NULL;
 671         }
 672         if (init_failed) {
 673                 if (adapter->irq_wakeup >= 0)
 674                         device_init_wakeup(adapter->dev, false);
 675                 mwifiex_free_adapter(adapter);
 676         }
 677         /* Tell all current and future waiters we're finished */
 678         complete_all(fw_done);
 679
 680         return init_failed ? -EIO : 0;
 681 }
 682
 683 static void mwifiex_fw_dpc(const struct firmware *firmware, void *context)
 684 {
 685         _mwifiex_fw_dpc(firmware, context);
 686 }
 687
 688 /*
 689  * This function gets the firmware and (if called asynchronously) kicks off the
 690  * HW init when done.
 691  */
 692 static int mwifiex_init_hw_fw(struct mwifiex_adapter *adapter,
 693                               bool req_fw_nowait)
 694 {
 695         int ret;
 696
 697         /* Override default firmware with manufacturing one if
 698          * manufacturing mode is enabled
 699          */
 700         if (mfg_mode) {
 701                 if (strlcpy(adapter->fw_name, MFG_FIRMWARE,
 702                             sizeof(adapter->fw_name)) >=
 703                             sizeof(adapter->fw_name)) {
 704                         pr_err("%s: fw_name too long!\n", __func__);
 705                         return -1;
 706                 }
 707         }
 708
 709         if (req_fw_nowait) {
 710                 ret = request_firmware_nowait(THIS_MODULE, 1, adapter->fw_name,
 711                                               adapter->dev, GFP_KERNEL, adapter,
 712                                               mwifiex_fw_dpc);
 713         } else {
 714                 ret = request_firmware(&adapter->firmware,
 715                                        adapter->fw_name,
 716                                        adapter->dev);
 717         }
 718
 719         if (ret < 0)
 720                 mwifiex_dbg(adapter, ERROR, "request_firmware%s error %d\n",
 721                             req_fw_nowait ? "_nowait" : "", ret);
 722         return ret;
 723 }
 724
 725 /*
 726  * CFG802.11 network device handler for open.
 727  *
 728  * Starts the data queue.
 729  */
 730 static int
 731 mwifiex_open(struct net_device *dev)
 732 {
 733         netif_carrier_off(dev);
 734
 735         return 0;
 736 }
 737
 738 /*
 739  * CFG802.11 network device handler for close.
 740  */
 741 static int
 742 mwifiex_close(struct net_device *dev)
 743 {
 744         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 745
 746         if (priv->scan_request) {
 747                 struct cfg80211_scan_info info = {
 748                         .aborted = true,
 749                 };
 750
 751                 mwifiex_dbg(priv->adapter, INFO,
 752                             "aborting scan on ndo_stop\n");
 753                 cfg80211_scan_done(priv->scan_request, &info);
 754                 priv->scan_request = NULL;
 755                 priv->scan_aborting = true;
 756         }
 757
 758         if (priv->sched_scanning) {
 759                 mwifiex_dbg(priv->adapter, INFO,
 760                             "aborting bgscan on ndo_stop\n");
 761                 mwifiex_stop_bg_scan(priv);
 762                 cfg80211_sched_scan_stopped(priv->wdev.wiphy, 0);
 763         }
 764
 765         return 0;
 766 }
 767
 768 static bool
 769 mwifiex_bypass_tx_queue(struct mwifiex_private *priv,
 770                         struct sk_buff *skb)
 771 {
 772         struct ethhdr *eth_hdr = (struct ethhdr *)skb->data;
 773
 774         if (ntohs(eth_hdr->h_proto) == ETH_P_PAE ||
 775             mwifiex_is_skb_mgmt_frame(skb) ||
 776             (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA &&
 777              ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info) &&
 778              (ntohs(eth_hdr->h_proto) == ETH_P_TDLS))) {
 779                 mwifiex_dbg(priv->adapter, DATA,
 780                             "bypass txqueue; eth type %#x, mgmt %d\n",
 781                              ntohs(eth_hdr->h_proto),
 782                              mwifiex_is_skb_mgmt_frame(skb));
 783                 return true;
 784         }
 785
 786         return false;
 787 }
 788 /*
 789  * Add buffer into wmm tx queue and queue work to transmit it.
 790  */
 791 int mwifiex_queue_tx_pkt(struct mwifiex_private *priv, struct sk_buff *skb)
 792 {
 793         struct netdev_queue *txq;
 794         int index = mwifiex_1d_to_wmm_queue[skb->priority];
 795
 796         if (atomic_inc_return(&priv->wmm_tx_pending[index]) >= MAX_TX_PENDING) {
 797                 txq = netdev_get_tx_queue(priv->netdev, index);
 798                 if (!netif_tx_queue_stopped(txq)) {
 799                         netif_tx_stop_queue(txq);
 800                         mwifiex_dbg(priv->adapter, DATA,
 801                                     "stop queue: %d\n", index);
 802                 }
 803         }
 804
 805         if (mwifiex_bypass_tx_queue(priv, skb)) {
 806                 atomic_inc(&priv->adapter->tx_pending);
 807                 atomic_inc(&priv->adapter->bypass_tx_pending);
 808                 mwifiex_wmm_add_buf_bypass_txqueue(priv, skb);
 809          } else {
 810                 atomic_inc(&priv->adapter->tx_pending);
 811                 mwifiex_wmm_add_buf_txqueue(priv, skb);
 812          }
 813
 814         mwifiex_queue_main_work(priv->adapter);
 815
 816         return 0;
 817 }
 818
 819 struct sk_buff *
 820 mwifiex_clone_skb_for_tx_status(struct mwifiex_private *priv,
 821                                 struct sk_buff *skb, u8 flag, u64 *cookie)
 822 {
 823         struct sk_buff *orig_skb = skb;
 824         struct mwifiex_txinfo *tx_info, *orig_tx_info;
 825
 826         skb = skb_clone(skb, GFP_ATOMIC);
 827         if (skb) {
 828                 int id;
 829
 830                 spin_lock_bh(&priv->ack_status_lock);
 831                 id = idr_alloc(&priv->ack_status_frames, orig_skb,
 832                                1, 0x10, GFP_ATOMIC);
 833                 spin_unlock_bh(&priv->ack_status_lock);
 834
 835                 if (id >= 0) {
 836                         tx_info = MWIFIEX_SKB_TXCB(skb);
 837                         tx_info->ack_frame_id = id;
 838                         tx_info->flags |= flag;
 839                         orig_tx_info = MWIFIEX_SKB_TXCB(orig_skb);
 840                         orig_tx_info->ack_frame_id = id;
 841                         orig_tx_info->flags |= flag;
 842
 843                         if (flag == MWIFIEX_BUF_FLAG_ACTION_TX_STATUS && cookie)
 844                                 orig_tx_info->cookie = *cookie;
 845
 846                 } else if (skb_shared(skb)) {
 847                         kfree_skb(orig_skb);
 848                 } else {
 849                         kfree_skb(skb);
 850                         skb = orig_skb;
 851                 }
 852         } else {
 853                 /* couldn't clone -- lose tx status ... */
 854                 skb = orig_skb;
 855         }
 856
 857         return skb;
 858 }
 859
 860 /*
 861  * CFG802.11 network device handler for data transmission.
 862  */
 863 static netdev_tx_t
 864 mwifiex_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
 865 {
 866         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 867         struct sk_buff *new_skb;
 868         struct mwifiex_txinfo *tx_info;
 869         bool multicast;
 870
 871         mwifiex_dbg(priv->adapter, DATA,
 872                     "data: %lu BSS(%d-%d): Data <= kernel\n",
 873                     jiffies, priv->bss_type, priv->bss_num);
 874
 875         if (test_bit(MWIFIEX_SURPRISE_REMOVED, &priv->adapter->work_flags)) {
 876                 kfree_skb(skb);
 877                 priv->stats.tx_dropped++;
 878                 return 0;
 879         }
 880         if (!skb->len || (skb->len > ETH_FRAME_LEN)) {
 881                 mwifiex_dbg(priv->adapter, ERROR,
 882                             "Tx: bad skb len %d\n", skb->len);
 883                 kfree_skb(skb);
 884                 priv->stats.tx_dropped++;
 885                 return 0;
 886         }
 887         if (skb_headroom(skb) < MWIFIEX_MIN_DATA_HEADER_LEN) {
 888                 mwifiex_dbg(priv->adapter, DATA,
 889                             "data: Tx: insufficient skb headroom %d\n",
 890                             skb_headroom(skb));
 891                 /* Insufficient skb headroom - allocate a new skb */
 892                 new_skb =
 893                         skb_realloc_headroom(skb, MWIFIEX_MIN_DATA_HEADER_LEN);
 894                 if (unlikely(!new_skb)) {
 895                         mwifiex_dbg(priv->adapter, ERROR,
 896                                     "Tx: cannot alloca new_skb\n");
 897                         kfree_skb(skb);
 898                         priv->stats.tx_dropped++;
 899                         return 0;
 900                 }
 901                 kfree_skb(skb);
 902                 skb = new_skb;
 903                 mwifiex_dbg(priv->adapter, INFO,
 904                             "info: new skb headroomd %d\n",
 905                             skb_headroom(skb));
 906         }
 907
 908         tx_info = MWIFIEX_SKB_TXCB(skb);
 909         memset(tx_info, 0, sizeof(*tx_info));
 910         tx_info->bss_num = priv->bss_num;
 911         tx_info->bss_type = priv->bss_type;
 912         tx_info->pkt_len = skb->len;
 913
 914         multicast = is_multicast_ether_addr(skb->data);
 915
 916         if (unlikely(!multicast && skb->sk &&
 917                      skb_shinfo(skb)->tx_flags & SKBTX_WIFI_STATUS &&
 918                      priv->adapter->fw_api_ver == MWIFIEX_FW_V15))
 919                 skb = mwifiex_clone_skb_for_tx_status(priv,
 920                                                       skb,
 921                                         MWIFIEX_BUF_FLAG_EAPOL_TX_STATUS, NULL);
 922
 923         /* Record the current time the packet was queued; used to
 924          * determine the amount of time the packet was queued in
 925          * the driver before it was sent to the firmware.
 926          * The delay is then sent along with the packet to the
 927          * firmware for aggregate delay calculation for stats and
 928          * MSDU lifetime expiry.
 929          */
 930         __net_timestamp(skb);
 931
 932         if (ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info) &&
 933             priv->bss_type == MWIFIEX_BSS_TYPE_STA &&
 934             !ether_addr_equal_unaligned(priv->cfg_bssid, skb->data)) {
 935                 if (priv->adapter->auto_tdls && priv->check_tdls_tx)
 936                         mwifiex_tdls_check_tx(priv, skb);
 937         }
 938
 939         mwifiex_queue_tx_pkt(priv, skb);
 940
 941         return 0;
 942 }
 943
 944 int mwifiex_set_mac_address(struct mwifiex_private *priv,
 945                             struct net_device *dev, bool external,
 946                             u8 *new_mac)
 947 {
 948         int ret;
 949         u64 mac_addr, old_mac_addr;
 950
 951         old_mac_addr = ether_addr_to_u64(priv->curr_addr);
 952
 953         if (external) {
 954                 mac_addr = ether_addr_to_u64(new_mac);
 955         } else {
 956                 /* Internal mac address change */
 957                 if (priv->bss_type == MWIFIEX_BSS_TYPE_ANY)
 958                         return -EOPNOTSUPP;
 959
 960                 mac_addr = old_mac_addr;
 961
 962                 if (priv->bss_type == MWIFIEX_BSS_TYPE_P2P) {
 963                         mac_addr |= BIT_ULL(MWIFIEX_MAC_LOCAL_ADMIN_BIT);
 964                         mac_addr += priv->bss_num;
 965                 } else if (priv->adapter->priv[0] != priv) {
 966                         /* Set mac address based on bss_type/bss_num */
 967                         mac_addr ^= BIT_ULL(priv->bss_type + 8);
 968                         mac_addr += priv->bss_num;
 969                 }
 970         }
 971
 972         u64_to_ether_addr(mac_addr, priv->curr_addr);
 973
 974         /* Send request to firmware */
 975         ret = mwifiex_send_cmd(priv, HostCmd_CMD_802_11_MAC_ADDRESS,
 976                                HostCmd_ACT_GEN_SET, 0, NULL, true);
 977
 978         if (ret) {
 979                 u64_to_ether_addr(old_mac_addr, priv->curr_addr);
 980                 mwifiex_dbg(priv->adapter, ERROR,
 981                             "set mac address failed: ret=%d\n", ret);
 982                 return ret;
 983         }
 984
 985         ether_addr_copy(dev->dev_addr, priv->curr_addr);
 986         return 0;
 987 }
 988
 989 /* CFG802.11 network device handler for setting MAC address.
 990  */
 991 static int
 992 mwifiex_ndo_set_mac_address(struct net_device *dev, void *addr)
 993 {
 994         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 995         struct sockaddr *hw_addr = addr;
 996
 997         return mwifiex_set_mac_address(priv, dev, true, hw_addr->sa_data);
 998 }
 999
1000 /*
1001  * CFG802.11 network device handler for setting multicast list.
1002  */
1003 static void mwifiex_set_multicast_list(struct net_device *dev)
1004 {
1005         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1006         struct mwifiex_multicast_list mcast_list;
1007
1008         if (dev->flags & IFF_PROMISC) {
1009                 mcast_list.mode = MWIFIEX_PROMISC_MODE;
1010         } else if (dev->flags & IFF_ALLMULTI ||
1011                    netdev_mc_count(dev) > MWIFIEX_MAX_MULTICAST_LIST_SIZE) {
1012                 mcast_list.mode = MWIFIEX_ALL_MULTI_MODE;
1013         } else {
1014                 mcast_list.mode = MWIFIEX_MULTICAST_MODE;
1015                 mcast_list.num_multicast_addr =
1016                         mwifiex_copy_mcast_addr(&mcast_list, dev);
1017         }
1018         mwifiex_request_set_multicast_list(priv, &mcast_list);
1019 }
1020
1021 /*
1022  * CFG802.11 network device handler for transmission timeout.
1023  */
1024 static void
1025 mwifiex_tx_timeout(struct net_device *dev, unsigned int txqueue)
1026 {
1027         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1028
1029         priv->num_tx_timeout++;
1030         priv->tx_timeout_cnt++;
1031         mwifiex_dbg(priv->adapter, ERROR,
1032                     "%lu : Tx timeout(#%d), bss_type-num = %d-%d\n",
1033                     jiffies, priv->tx_timeout_cnt, priv->bss_type,
1034                     priv->bss_num);
1035         mwifiex_set_trans_start(dev);
1036
1037         if (priv->tx_timeout_cnt > TX_TIMEOUT_THRESHOLD &&
1038             priv->adapter->if_ops.card_reset) {
1039                 mwifiex_dbg(priv->adapter, ERROR,
1040                             "tx_timeout_cnt exceeds threshold.\t"
1041                             "Triggering card reset!\n");
1042                 priv->adapter->if_ops.card_reset(priv->adapter);
1043         }
1044 }
1045
1046 void mwifiex_multi_chan_resync(struct mwifiex_adapter *adapter)
1047 {
1048         struct usb_card_rec *card = adapter->card;
1049         struct mwifiex_private *priv;
1050         u16 tx_buf_size;
1051         int i, ret;
1052
1053         card->mc_resync_flag = true;
1054         for (i = 0; i < MWIFIEX_TX_DATA_PORT; i++) {
1055                 if (atomic_read(&card->port[i].tx_data_urb_pending)) {
1056                         mwifiex_dbg(adapter, WARN, "pending data urb in sys\n");
1057                         return;
1058                 }
1059         }
1060
1061         card->mc_resync_flag = false;
1062         tx_buf_size = 0xffff;
1063         priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
1064         ret = mwifiex_send_cmd(priv, HostCmd_CMD_RECONFIGURE_TX_BUFF,
1065                                HostCmd_ACT_GEN_SET, 0, &tx_buf_size, false);
1066         if (ret)
1067                 mwifiex_dbg(adapter, ERROR,
1068                             "send reconfig tx buf size cmd err\n");
1069 }
1070 EXPORT_SYMBOL_GPL(mwifiex_multi_chan_resync);
1071
1072 void mwifiex_upload_device_dump(struct mwifiex_adapter *adapter)
1073 {
1074         /* Dump all the memory data into single file, a userspace script will
1075          * be used to split all the memory data to multiple files
1076          */
1077         mwifiex_dbg(adapter, MSG,
1078                     "== mwifiex dump information to /sys/class/devcoredump start\n");
1079         dev_coredumpv(adapter->dev, adapter->devdump_data, adapter->devdump_len,
1080                       GFP_KERNEL);
1081         mwifiex_dbg(adapter, MSG,
1082                     "== mwifiex dump information to /sys/class/devcoredump end\n");
1083
1084         /* Device dump data will be freed in device coredump release function
1085          * after 5 min. Here reset adapter->devdump_data and ->devdump_len
1086          * to avoid it been accidentally reused.
1087          */
1088         adapter->devdump_data = NULL;
1089         adapter->devdump_len = 0;
1090 }
1091 EXPORT_SYMBOL_GPL(mwifiex_upload_device_dump);
1092
1093 void mwifiex_drv_info_dump(struct mwifiex_adapter *adapter)
1094 {
1095         char *p;
1096         char drv_version[64];
1097         struct usb_card_rec *cardp;
1098         struct sdio_mmc_card *sdio_card;
1099         struct mwifiex_private *priv;
1100         int i, idx;
1101         struct netdev_queue *txq;
1102         struct mwifiex_debug_info *debug_info;
1103
1104         mwifiex_dbg(adapter, MSG, "===mwifiex driverinfo dump start===\n");
1105
1106         p = adapter->devdump_data;
1107         strcpy(p, "========Start dump driverinfo========\n");
1108         p += strlen("========Start dump driverinfo========\n");
1109         p += sprintf(p, "driver_name = " "\"mwifiex\"\n");
1110
1111         mwifiex_drv_get_driver_version(adapter, drv_version,
1112                                        sizeof(drv_version) - 1);
1113         p += sprintf(p, "driver_version = %s\n", drv_version);
1114
1115         if (adapter->iface_type == MWIFIEX_USB) {
1116                 cardp = (struct usb_card_rec *)adapter->card;
1117                 p += sprintf(p, "tx_cmd_urb_pending = %d\n",
1118                              atomic_read(&cardp->tx_cmd_urb_pending));
1119                 p += sprintf(p, "tx_data_urb_pending_port_0 = %d\n",
1120                              atomic_read(&cardp->port[0].tx_data_urb_pending));
1121                 p += sprintf(p, "tx_data_urb_pending_port_1 = %d\n",
1122                              atomic_read(&cardp->port[1].tx_data_urb_pending));
1123                 p += sprintf(p, "rx_cmd_urb_pending = %d\n",
1124                              atomic_read(&cardp->rx_cmd_urb_pending));
1125                 p += sprintf(p, "rx_data_urb_pending = %d\n",
1126                              atomic_read(&cardp->rx_data_urb_pending));
1127         }
1128
1129         p += sprintf(p, "tx_pending = %d\n",
1130                      atomic_read(&adapter->tx_pending));
1131         p += sprintf(p, "rx_pending = %d\n",
1132                      atomic_read(&adapter->rx_pending));
1133
1134         if (adapter->iface_type == MWIFIEX_SDIO) {
1135                 sdio_card = (struct sdio_mmc_card *)adapter->card;
1136                 p += sprintf(p, "\nmp_rd_bitmap=0x%x curr_rd_port=0x%x\n",
1137                              sdio_card->mp_rd_bitmap, sdio_card->curr_rd_port);
1138                 p += sprintf(p, "mp_wr_bitmap=0x%x curr_wr_port=0x%x\n",
1139                              sdio_card->mp_wr_bitmap, sdio_card->curr_wr_port);
1140         }
1141
1142         for (i = 0; i < adapter->priv_num; i++) {
1143                 if (!adapter->priv[i] || !adapter->priv[i]->netdev)
1144                         continue;
1145                 priv = adapter->priv[i];
1146                 p += sprintf(p, "\n[interface  : \"%s\"]\n",
1147                              priv->netdev->name);
1148                 p += sprintf(p, "wmm_tx_pending[0] = %d\n",
1149                              atomic_read(&priv->wmm_tx_pending[0]));
1150                 p += sprintf(p, "wmm_tx_pending[1] = %d\n",
1151                              atomic_read(&priv->wmm_tx_pending[1]));
1152                 p += sprintf(p, "wmm_tx_pending[2] = %d\n",
1153                              atomic_read(&priv->wmm_tx_pending[2]));
1154                 p += sprintf(p, "wmm_tx_pending[3] = %d\n",
1155                              atomic_read(&priv->wmm_tx_pending[3]));
1156                 p += sprintf(p, "media_state=\"%s\"\n", !priv->media_connected ?
1157                              "Disconnected" : "Connected");
1158                 p += sprintf(p, "carrier %s\n", (netif_carrier_ok(priv->netdev)
1159                              ? "on" : "off"));
1160                 for (idx = 0; idx < priv->netdev->num_tx_queues; idx++) {
1161                         txq = netdev_get_tx_queue(priv->netdev, idx);
1162                         p += sprintf(p, "tx queue %d:%s  ", idx,
1163                                      netif_tx_queue_stopped(txq) ?
1164                                      "stopped" : "started");
1165                 }
1166                 p += sprintf(p, "\n%s: num_tx_timeout = %d\n",
1167                              priv->netdev->name, priv->num_tx_timeout);
1168         }
1169
1170         if (adapter->iface_type == MWIFIEX_SDIO ||
1171             adapter->iface_type == MWIFIEX_PCIE) {
1172                 p += sprintf(p, "\n=== %s register dump===\n",
1173                              adapter->iface_type == MWIFIEX_SDIO ?
1174                                                         "SDIO" : "PCIE");
1175                 if (adapter->if_ops.reg_dump)
1176                         p += adapter->if_ops.reg_dump(adapter, p);
1177         }
1178         p += sprintf(p, "\n=== more debug information\n");
1179         debug_info = kzalloc(sizeof(*debug_info), GFP_KERNEL);
1180         if (debug_info) {
1181                 for (i = 0; i < adapter->priv_num; i++) {
1182                         if (!adapter->priv[i] || !adapter->priv[i]->netdev)
1183                                 continue;
1184                         priv = adapter->priv[i];
1185                         mwifiex_get_debug_info(priv, debug_info);
1186                         p += mwifiex_debug_info_to_buffer(priv, p, debug_info);
1187                         break;
1188                 }
1189                 kfree(debug_info);
1190         }
1191
1192         strcpy(p, "\n========End dump========\n");
1193         p += strlen("\n========End dump========\n");
1194         mwifiex_dbg(adapter, MSG, "===mwifiex driverinfo dump end===\n");
1195         adapter->devdump_len = p - (char *)adapter->devdump_data;
1196 }
1197 EXPORT_SYMBOL_GPL(mwifiex_drv_info_dump);
1198
1199 void mwifiex_prepare_fw_dump_info(struct mwifiex_adapter *adapter)
1200 {
1201         u8 idx;
1202         char *fw_dump_ptr;
1203         u32 dump_len = 0;
1204
1205         for (idx = 0; idx < adapter->num_mem_types; idx++) {
1206                 struct memory_type_mapping *entry =
1207                                 &adapter->mem_type_mapping_tbl[idx];
1208
1209                 if (entry->mem_ptr) {
1210                         dump_len += (strlen("========Start dump ") +
1211                                         strlen(entry->mem_name) +
1212                                         strlen("========\n") +
1213                                         (entry->mem_size + 1) +
1214                                         strlen("\n========End dump========\n"));
1215                 }
1216         }
1217
1218         if (dump_len + 1 + adapter->devdump_len > MWIFIEX_FW_DUMP_SIZE) {
1219                 /* Realloc in case buffer overflow */
1220                 fw_dump_ptr = vzalloc(dump_len + 1 + adapter->devdump_len);
1221                 mwifiex_dbg(adapter, MSG, "Realloc device dump data.\n");
1222                 if (!fw_dump_ptr) {
1223                         vfree(adapter->devdump_data);
1224                         mwifiex_dbg(adapter, ERROR,
1225                                     "vzalloc devdump data failure!\n");
1226                         return;
1227                 }
1228
1229                 memmove(fw_dump_ptr, adapter->devdump_data,
1230                         adapter->devdump_len);
1231                 vfree(adapter->devdump_data);
1232                 adapter->devdump_data = fw_dump_ptr;
1233         }
1234
1235         fw_dump_ptr = (char *)adapter->devdump_data + adapter->devdump_len;
1236
1237         for (idx = 0; idx < adapter->num_mem_types; idx++) {
1238                 struct memory_type_mapping *entry =
1239                                         &adapter->mem_type_mapping_tbl[idx];
1240
1241                 if (entry->mem_ptr) {
1242                         strcpy(fw_dump_ptr, "========Start dump ");
1243                         fw_dump_ptr += strlen("========Start dump ");
1244
1245                         strcpy(fw_dump_ptr, entry->mem_name);
1246                         fw_dump_ptr += strlen(entry->mem_name);
1247
1248                         strcpy(fw_dump_ptr, "========\n");
1249                         fw_dump_ptr += strlen("========\n");
1250
1251                         memcpy(fw_dump_ptr, entry->mem_ptr, entry->mem_size);
1252                         fw_dump_ptr += entry->mem_size;
1253
1254                         strcpy(fw_dump_ptr, "\n========End dump========\n");
1255                         fw_dump_ptr += strlen("\n========End dump========\n");
1256                 }
1257         }
1258
1259         adapter->devdump_len = fw_dump_ptr - (char *)adapter->devdump_data;
1260
1261         for (idx = 0; idx < adapter->num_mem_types; idx++) {
1262                 struct memory_type_mapping *entry =
1263                         &adapter->mem_type_mapping_tbl[idx];
1264
1265                 vfree(entry->mem_ptr);
1266                 entry->mem_ptr = NULL;
1267                 entry->mem_size = 0;
1268         }
1269 }
1270 EXPORT_SYMBOL_GPL(mwifiex_prepare_fw_dump_info);
1271
1272 /*
1273  * CFG802.11 network device handler for statistics retrieval.
1274  */
1275 static struct net_device_stats *mwifiex_get_stats(struct net_device *dev)
1276 {
1277         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1278
1279         return &priv->stats;
1280 }
1281
1282 static u16
1283 mwifiex_netdev_select_wmm_queue(struct net_device *dev, struct sk_buff *skb,
1284                                 struct net_device *sb_dev)
1285 {
1286         skb->priority = cfg80211_classify8021d(skb, NULL);
1287         return mwifiex_1d_to_wmm_queue[skb->priority];
1288 }
1289
1290 /* Network device handlers */
1291 static const struct net_device_ops mwifiex_netdev_ops = {
1292         .ndo_open = mwifiex_open,
1293         .ndo_stop = mwifiex_close,
1294         .ndo_start_xmit = mwifiex_hard_start_xmit,
1295         .ndo_set_mac_address = mwifiex_ndo_set_mac_address,
1296         .ndo_validate_addr = eth_validate_addr,
1297         .ndo_tx_timeout = mwifiex_tx_timeout,
1298         .ndo_get_stats = mwifiex_get_stats,
1299         .ndo_set_rx_mode = mwifiex_set_multicast_list,
1300         .ndo_select_queue = mwifiex_netdev_select_wmm_queue,
1301 };
1302
1303 /*
1304  * This function initializes the private structure parameters.
1305  *
1306  * The following wait queues are initialized -
1307  *      - IOCTL wait queue
1308  *      - Command wait queue
1309  *      - Statistics wait queue
1310  *
1311  * ...and the following default parameters are set -
1312  *      - Current key index     : Set to 0
1313  *      - Rate index            : Set to auto
1314  *      - Media connected       : Set to disconnected
1315  *      - Adhoc link sensed     : Set to false
1316  *      - Nick name             : Set to null
1317  *      - Number of Tx timeout  : Set to 0
1318  *      - Device address        : Set to current address
1319  *      - Rx histogram statistc : Set to 0
1320  *
1321  * In addition, the CFG80211 work queue is also created.
1322  */
1323 void mwifiex_init_priv_params(struct mwifiex_private *priv,
1324                               struct net_device *dev)
1325 {
1326         dev->netdev_ops = &mwifiex_netdev_ops;
1327         dev->needs_free_netdev = true;
1328         /* Initialize private structure */
1329         priv->current_key_index = 0;
1330         priv->media_connected = false;
1331         memset(priv->mgmt_ie, 0,
1332                sizeof(struct mwifiex_ie) * MAX_MGMT_IE_INDEX);
1333         priv->beacon_idx = MWIFIEX_AUTO_IDX_MASK;
1334         priv->proberesp_idx = MWIFIEX_AUTO_IDX_MASK;
1335         priv->assocresp_idx = MWIFIEX_AUTO_IDX_MASK;
1336         priv->gen_idx = MWIFIEX_AUTO_IDX_MASK;
1337         priv->num_tx_timeout = 0;
1338         if (is_valid_ether_addr(dev->dev_addr))
1339                 ether_addr_copy(priv->curr_addr, dev->dev_addr);
1340         else
1341                 ether_addr_copy(priv->curr_addr, priv->adapter->perm_addr);
1342
1343         if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA ||
1344             GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_UAP) {
1345                 priv->hist_data = kmalloc(sizeof(*priv->hist_data), GFP_KERNEL);
1346                 if (priv->hist_data)
1347                         mwifiex_hist_data_reset(priv);
1348         }
1349 }
1350
1351 /*
1352  * This function check if command is pending.
1353  */
1354 int is_command_pending(struct mwifiex_adapter *adapter)
1355 {
1356         int is_cmd_pend_q_empty;
1357
1358         spin_lock_bh(&adapter->cmd_pending_q_lock);
1359         is_cmd_pend_q_empty = list_empty(&adapter->cmd_pending_q);
1360         spin_unlock_bh(&adapter->cmd_pending_q_lock);
1361
1362         return !is_cmd_pend_q_empty;
1363 }
1364
1365 /*
1366  * This is the RX work queue function.
1367  *
1368  * It handles the RX operations.
1369  */
1370 static void mwifiex_rx_work_queue(struct work_struct *work)
1371 {
1372         struct mwifiex_adapter *adapter =
1373                 container_of(work, struct mwifiex_adapter, rx_work);
1374
1375         if (test_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags))
1376                 return;
1377         mwifiex_process_rx(adapter);
1378 }
1379
1380 /*
1381  * This is the main work queue function.
1382  *
1383  * It handles the main process, which in turn handles the complete
1384  * driver operations.
1385  */
1386 static void mwifiex_main_work_queue(struct work_struct *work)
1387 {
1388         struct mwifiex_adapter *adapter =
1389                 container_of(work, struct mwifiex_adapter, main_work);
1390
1391         if (test_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags))
1392                 return;
1393         mwifiex_main_process(adapter);
1394 }
1395
1396 /* Common teardown code used for both device removal and reset */
1397 static void mwifiex_uninit_sw(struct mwifiex_adapter *adapter)
1398 {
1399         struct mwifiex_private *priv;
1400         int i;
1401
1402         /* We can no longer handle interrupts once we start doing the teardown
1403          * below.
1404          */
1405         if (adapter->if_ops.disable_int)
1406                 adapter->if_ops.disable_int(adapter);
1407
1408         set_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags);
1409         mwifiex_terminate_workqueue(adapter);
1410         adapter->int_status = 0;
1411
1412         /* Stop data */
1413         for (i = 0; i < adapter->priv_num; i++) {
1414                 priv = adapter->priv[i];
1415                 if (priv && priv->netdev) {
1416                         mwifiex_stop_net_dev_queue(priv->netdev, adapter);
1417                         if (netif_carrier_ok(priv->netdev))
1418                                 netif_carrier_off(priv->netdev);
1419                         netif_device_detach(priv->netdev);
1420                 }
1421         }
1422
1423         mwifiex_dbg(adapter, CMD, "cmd: calling mwifiex_shutdown_drv...\n");
1424         mwifiex_shutdown_drv(adapter);
1425         mwifiex_dbg(adapter, CMD, "cmd: mwifiex_shutdown_drv done\n");
1426
1427         if (atomic_read(&adapter->rx_pending) ||
1428             atomic_read(&adapter->tx_pending) ||
1429             atomic_read(&adapter->cmd_pending)) {
1430                 mwifiex_dbg(adapter, ERROR,
1431                             "rx_pending=%d, tx_pending=%d,\t"
1432                             "cmd_pending=%d\n",
1433                             atomic_read(&adapter->rx_pending),
1434                             atomic_read(&adapter->tx_pending),
1435                             atomic_read(&adapter->cmd_pending));
1436         }
1437
1438         for (i = 0; i < adapter->priv_num; i++) {
1439                 priv = adapter->priv[i];
1440                 if (!priv)
1441                         continue;
1442                 rtnl_lock();
1443                 if (priv->netdev &&
1444                     priv->wdev.iftype != NL80211_IFTYPE_UNSPECIFIED)
1445                         mwifiex_del_virtual_intf(adapter->wiphy, &priv->wdev);
1446                 rtnl_unlock();
1447         }
1448
1449         wiphy_unregister(adapter->wiphy);
1450         wiphy_free(adapter->wiphy);
1451         adapter->wiphy = NULL;
1452
1453         vfree(adapter->chan_stats);
1454         mwifiex_free_cmd_buffers(adapter);
1455 }
1456
1457 /*
1458  * This function can be used for shutting down the adapter SW.
1459  */
1460 int mwifiex_shutdown_sw(struct mwifiex_adapter *adapter)
1461 {
1462         struct mwifiex_private *priv;
1463
1464         if (!adapter)
1465                 return 0;
1466
1467         wait_for_completion(adapter->fw_done);
1468         /* Caller should ensure we aren't suspending while this happens */
1469         reinit_completion(adapter->fw_done);
1470
1471         priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
1472         mwifiex_deauthenticate(priv, NULL);
1473
1474         mwifiex_init_shutdown_fw(priv, MWIFIEX_FUNC_SHUTDOWN);
1475
1476         mwifiex_uninit_sw(adapter);
1477         adapter->is_up = false;
1478
1479         if (adapter->if_ops.down_dev)
1480                 adapter->if_ops.down_dev(adapter);
1481
1482         return 0;
1483 }
1484 EXPORT_SYMBOL_GPL(mwifiex_shutdown_sw);
1485
1486 /* This function can be used for reinitting the adapter SW. Required
1487  * code is extracted from mwifiex_add_card()
1488  */
1489 int
1490 mwifiex_reinit_sw(struct mwifiex_adapter *adapter)
1491 {
1492         int ret;
1493
1494         mwifiex_init_lock_list(adapter);
1495         if (adapter->if_ops.up_dev)
1496                 adapter->if_ops.up_dev(adapter);
1497
1498         adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING;
1499         clear_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags);
1500         init_waitqueue_head(&adapter->init_wait_q);
1501         clear_bit(MWIFIEX_IS_SUSPENDED, &adapter->work_flags);
1502         adapter->hs_activated = false;
1503         clear_bit(MWIFIEX_IS_CMD_TIMEDOUT, &adapter->work_flags);
1504         init_waitqueue_head(&adapter->hs_activate_wait_q);
1505         init_waitqueue_head(&adapter->cmd_wait_q.wait);
1506         adapter->cmd_wait_q.status = 0;
1507         adapter->scan_wait_q_woken = false;
1508
1509         if ((num_possible_cpus() > 1) || adapter->iface_type == MWIFIEX_USB)
1510                 adapter->rx_work_enabled = true;
1511
1512         adapter->workqueue =
1513                 alloc_workqueue("MWIFIEX_WORK_QUEUE",
1514                                 WQ_HIGHPRI | WQ_MEM_RECLAIM | WQ_UNBOUND, 1);
1515         if (!adapter->workqueue)
1516                 goto err_kmalloc;
1517
1518         INIT_WORK(&adapter->main_work, mwifiex_main_work_queue);
1519
1520         if (adapter->rx_work_enabled) {
1521                 adapter->rx_workqueue = alloc_workqueue("MWIFIEX_RX_WORK_QUEUE",
1522                                                         WQ_HIGHPRI |
1523                                                         WQ_MEM_RECLAIM |
1524                                                         WQ_UNBOUND, 1);
1525                 if (!adapter->rx_workqueue)
1526                         goto err_kmalloc;
1527                 INIT_WORK(&adapter->rx_work, mwifiex_rx_work_queue);
1528         }
1529
1530         /* Register the device. Fill up the private data structure with
1531          * relevant information from the card. Some code extracted from
1532          * mwifiex_register_dev()
1533          */
1534         mwifiex_dbg(adapter, INFO, "%s, mwifiex_init_hw_fw()...\n", __func__);
1535
1536         if (mwifiex_init_hw_fw(adapter, false)) {
1537                 mwifiex_dbg(adapter, ERROR,
1538                             "%s: firmware init failed\n", __func__);
1539                 goto err_init_fw;
1540         }
1541
1542         /* _mwifiex_fw_dpc() does its own cleanup */
1543         ret = _mwifiex_fw_dpc(adapter->firmware, adapter);
1544         if (ret) {
1545                 pr_err("Failed to bring up adapter: %d\n", ret);
1546                 return ret;
1547         }
1548         mwifiex_dbg(adapter, INFO, "%s, successful\n", __func__);
1549
1550         return 0;
1551
1552 err_init_fw:
1553         mwifiex_dbg(adapter, ERROR, "info: %s: unregister device\n", __func__);
1554         if (adapter->if_ops.unregister_dev)
1555                 adapter->if_ops.unregister_dev(adapter);
1556
1557 err_kmalloc:
1558         set_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags);
1559         mwifiex_terminate_workqueue(adapter);
1560         if (adapter->hw_status == MWIFIEX_HW_STATUS_READY) {
1561                 mwifiex_dbg(adapter, ERROR,
1562                             "info: %s: shutdown mwifiex\n", __func__);
1563                 mwifiex_shutdown_drv(adapter);
1564                 mwifiex_free_cmd_buffers(adapter);
1565         }
1566
1567         complete_all(adapter->fw_done);
1568         mwifiex_dbg(adapter, INFO, "%s, error\n", __func__);
1569
1570         return -1;
1571 }
1572 EXPORT_SYMBOL_GPL(mwifiex_reinit_sw);
1573
1574 static irqreturn_t mwifiex_irq_wakeup_handler(int irq, void *priv)
1575 {
1576         struct mwifiex_adapter *adapter = priv;
1577
1578         dev_dbg(adapter->dev, "%s: wake by wifi", __func__);
1579         adapter->wake_by_wifi = true;
1580         disable_irq_nosync(irq);
1581
1582         /* Notify PM core we are wakeup source */
1583         pm_wakeup_event(adapter->dev, 0);
1584         pm_system_wakeup();
1585
1586         return IRQ_HANDLED;
1587 }
1588
1589 static void mwifiex_probe_of(struct mwifiex_adapter *adapter)
1590 {
1591         int ret;
1592         struct device *dev = adapter->dev;
1593
1594         if (!dev->of_node)
1595                 goto err_exit;
1596
1597         adapter->dt_node = dev->of_node;
1598         adapter->irq_wakeup = irq_of_parse_and_map(adapter->dt_node, 0);
1599         if (!adapter->irq_wakeup) {
1600                 dev_dbg(dev, "fail to parse irq_wakeup from device tree\n");
1601                 goto err_exit;
1602         }
1603
1604         ret = devm_request_irq(dev, adapter->irq_wakeup,
1605                                mwifiex_irq_wakeup_handler, IRQF_TRIGGER_LOW,
1606                                "wifi_wake", adapter);
1607         if (ret) {
1608                 dev_err(dev, "Failed to request irq_wakeup %d (%d)\n",
1609                         adapter->irq_wakeup, ret);
1610                 goto err_exit;
1611         }
1612
1613         disable_irq(adapter->irq_wakeup);
1614         if (device_init_wakeup(dev, true)) {
1615                 dev_err(dev, "fail to init wakeup for mwifiex\n");
1616                 goto err_exit;
1617         }
1618         return;
1619
1620 err_exit:
1621         adapter->irq_wakeup = -1;
1622 }
1623
1624 /*
1625  * This function adds the card.
1626  *
1627  * This function follows the following major steps to set up the device -
1628  *      - Initialize software. This includes probing the card, registering
1629  *        the interface operations table, and allocating/initializing the
1630  *        adapter structure
1631  *      - Set up the netlink socket
1632  *      - Create and start the main work queue
1633  *      - Register the device
1634  *      - Initialize firmware and hardware
1635  *      - Add logical interfaces
1636  */
1637 int
1638 mwifiex_add_card(void *card, struct completion *fw_done,
1639                  struct mwifiex_if_ops *if_ops, u8 iface_type,
1640                  struct device *dev)
1641 {
1642         struct mwifiex_adapter *adapter;
1643
1644         if (mwifiex_register(card, dev, if_ops, (void **)&adapter)) {
1645                 pr_err("%s: software init failed\n", __func__);
1646                 goto err_init_sw;
1647         }
1648
1649         mwifiex_probe_of(adapter);
1650
1651         adapter->iface_type = iface_type;
1652         adapter->fw_done = fw_done;
1653
1654         adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING;
1655         clear_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags);
1656         init_waitqueue_head(&adapter->init_wait_q);
1657         clear_bit(MWIFIEX_IS_SUSPENDED, &adapter->work_flags);
1658         adapter->hs_activated = false;
1659         init_waitqueue_head(&adapter->hs_activate_wait_q);
1660         init_waitqueue_head(&adapter->cmd_wait_q.wait);
1661         adapter->cmd_wait_q.status = 0;
1662         adapter->scan_wait_q_woken = false;
1663
1664         if ((num_possible_cpus() > 1) || adapter->iface_type == MWIFIEX_USB)
1665                 adapter->rx_work_enabled = true;
1666
1667         adapter->workqueue =
1668                 alloc_workqueue("MWIFIEX_WORK_QUEUE",
1669                                 WQ_HIGHPRI | WQ_MEM_RECLAIM | WQ_UNBOUND, 1);
1670         if (!adapter->workqueue)
1671                 goto err_kmalloc;
1672
1673         INIT_WORK(&adapter->main_work, mwifiex_main_work_queue);
1674
1675         if (adapter->rx_work_enabled) {
1676                 adapter->rx_workqueue = alloc_workqueue("MWIFIEX_RX_WORK_QUEUE",
1677                                                         WQ_HIGHPRI |
1678                                                         WQ_MEM_RECLAIM |
1679                                                         WQ_UNBOUND, 1);
1680                 if (!adapter->rx_workqueue)
1681                         goto err_kmalloc;
1682
1683                 INIT_WORK(&adapter->rx_work, mwifiex_rx_work_queue);
1684         }
1685
1686         /* Register the device. Fill up the private data structure with relevant
1687            information from the card. */
1688         if (adapter->if_ops.register_dev(adapter)) {
1689                 pr_err("%s: failed to register mwifiex device\n", __func__);
1690                 goto err_registerdev;
1691         }
1692
1693         if (mwifiex_init_hw_fw(adapter, true)) {
1694                 pr_err("%s: firmware init failed\n", __func__);
1695                 goto err_init_fw;
1696         }
1697
1698         return 0;
1699
1700 err_init_fw:
1701         pr_debug("info: %s: unregister device\n", __func__);
1702         if (adapter->if_ops.unregister_dev)
1703                 adapter->if_ops.unregister_dev(adapter);
1704 err_registerdev:
1705         set_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags);
1706         mwifiex_terminate_workqueue(adapter);
1707         if (adapter->hw_status == MWIFIEX_HW_STATUS_READY) {
1708                 pr_debug("info: %s: shutdown mwifiex\n", __func__);
1709                 mwifiex_shutdown_drv(adapter);
1710                 mwifiex_free_cmd_buffers(adapter);
1711         }
1712 err_kmalloc:
1713         if (adapter->irq_wakeup >= 0)
1714                 device_init_wakeup(adapter->dev, false);
1715         mwifiex_free_adapter(adapter);
1716
1717 err_init_sw:
1718
1719         return -1;
1720 }
1721 EXPORT_SYMBOL_GPL(mwifiex_add_card);
1722
1723 /*
1724  * This function removes the card.
1725  *
1726  * This function follows the following major steps to remove the device -
1727  *      - Stop data traffic
1728  *      - Shutdown firmware
1729  *      - Remove the logical interfaces
1730  *      - Terminate the work queue
1731  *      - Unregister the device
1732  *      - Free the adapter structure
1733  */
1734 int mwifiex_remove_card(struct mwifiex_adapter *adapter)
1735 {
1736         if (!adapter)
1737                 return 0;
1738
1739         if (adapter->is_up)
1740                 mwifiex_uninit_sw(adapter);
1741
1742         if (adapter->irq_wakeup >= 0)
1743                 device_init_wakeup(adapter->dev, false);
1744
1745         /* Unregister device */
1746         mwifiex_dbg(adapter, INFO,
1747                     "info: unregister device\n");
1748         if (adapter->if_ops.unregister_dev)
1749                 adapter->if_ops.unregister_dev(adapter);
1750         /* Free adapter structure */
1751         mwifiex_dbg(adapter, INFO,
1752                     "info: free adapter\n");
1753         mwifiex_free_adapter(adapter);
1754
1755         return 0;
1756 }
1757 EXPORT_SYMBOL_GPL(mwifiex_remove_card);
1758
1759 void _mwifiex_dbg(const struct mwifiex_adapter *adapter, int mask,
1760                   const char *fmt, ...)
1761 {
1762         struct va_format vaf;
1763         va_list args;
1764
1765         if (!(adapter->debug_mask & mask))
1766                 return;
1767
1768         va_start(args, fmt);
1769
1770         vaf.fmt = fmt;
1771         vaf.va = &args;
1772
1773         if (adapter->dev)
1774                 dev_info(adapter->dev, "%pV", &vaf);
1775         else
1776                 pr_info("%pV", &vaf);
1777
1778         va_end(args);
1779 }
1780 EXPORT_SYMBOL_GPL(_mwifiex_dbg);
1781
1782 /*
1783  * This function initializes the module.
1784  *
1785  * The debug FS is also initialized if configured.
1786  */
1787 static int
1788 mwifiex_init_module(void)
1789 {
1790 #ifdef CONFIG_DEBUG_FS
1791         mwifiex_debugfs_init();
1792 #endif
1793         return 0;
1794 }
1795
1796 /*
1797  * This function cleans up the module.
1798  *
1799  * The debug FS is removed if available.
1800  */
1801 static void
1802 mwifiex_cleanup_module(void)
1803 {
1804 #ifdef CONFIG_DEBUG_FS
1805         mwifiex_debugfs_remove();
1806 #endif
1807 }
1808
1809 module_init(mwifiex_init_module);
1810 module_exit(mwifiex_cleanup_module);
1811
1812 MODULE_AUTHOR("Marvell International Ltd.");
1813 MODULE_DESCRIPTION("Marvell WiFi-Ex Driver version " VERSION);
1814 MODULE_VERSION(VERSION);
1815 MODULE_LICENSE("GPL v2");