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    "/*(DEBLOBBED)*/"
  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 /*
  52  * This function registers the device and performs all the necessary
  53  * initializations.
  54  *
  55  * The following initialization operations are performed -
  56  *      - Allocate adapter structure
  57  *      - Save interface specific operations table in adapter
  58  *      - Call interface specific initialization routine
  59  *      - Allocate private structures
  60  *      - Set default adapter structure parameters
  61  *      - Initialize locks
  62  *
  63  * In case of any errors during inittialization, this function also ensures
  64  * proper cleanup before exiting.
  65  */
  66 static int mwifiex_register(void *card, struct device *dev,
  67                             struct mwifiex_if_ops *if_ops, void **padapter)
  68 {
  69         struct mwifiex_adapter *adapter;
  70         int i;
  71
  72         adapter = kzalloc(sizeof(struct mwifiex_adapter), GFP_KERNEL);
  73         if (!adapter)
  74                 return -ENOMEM;
  75
  76         *padapter = adapter;
  77         adapter->dev = dev;
  78         adapter->card = card;
  79
  80         /* Save interface specific operations in adapter */
  81         memmove(&adapter->if_ops, if_ops, sizeof(struct mwifiex_if_ops));
  82         adapter->debug_mask = debug_mask;
  83
  84         /* card specific initialization has been deferred until now .. */
  85         if (adapter->if_ops.init_if)
  86                 if (adapter->if_ops.init_if(adapter))
  87                         goto error;
  88
  89         adapter->priv_num = 0;
  90
  91         for (i = 0; i < MWIFIEX_MAX_BSS_NUM; i++) {
  92                 /* Allocate memory for private structure */
  93                 adapter->priv[i] =
  94                         kzalloc(sizeof(struct mwifiex_private), GFP_KERNEL);
  95                 if (!adapter->priv[i])
  96                         goto error;
  97
  98                 adapter->priv[i]->adapter = adapter;
  99                 adapter->priv_num++;
 100         }
 101         mwifiex_init_lock_list(adapter);
 102
 103         timer_setup(&adapter->cmd_timer, mwifiex_cmd_timeout_func, 0);
 104
 105         return 0;
 106
 107 error:
 108         mwifiex_dbg(adapter, ERROR,
 109                     "info: leave mwifiex_register with error\n");
 110
 111         for (i = 0; i < adapter->priv_num; i++)
 112                 kfree(adapter->priv[i]);
 113
 114         kfree(adapter);
 115
 116         return -1;
 117 }
 118
 119 /*
 120  * This function unregisters the device and performs all the necessary
 121  * cleanups.
 122  *
 123  * The following cleanup operations are performed -
 124  *      - Free the timers
 125  *      - Free beacon buffers
 126  *      - Free private structures
 127  *      - Free adapter structure
 128  */
 129 static int mwifiex_unregister(struct mwifiex_adapter *adapter)
 130 {
 131         s32 i;
 132
 133         if (adapter->if_ops.cleanup_if)
 134                 adapter->if_ops.cleanup_if(adapter);
 135
 136         del_timer_sync(&adapter->cmd_timer);
 137
 138         /* Free private structures */
 139         for (i = 0; i < adapter->priv_num; i++) {
 140                 if (adapter->priv[i]) {
 141                         mwifiex_free_curr_bcn(adapter->priv[i]);
 142                         kfree(adapter->priv[i]);
 143                 }
 144         }
 145
 146         if (adapter->nd_info) {
 147                 for (i = 0 ; i < adapter->nd_info->n_matches ; i++)
 148                         kfree(adapter->nd_info->matches[i]);
 149                 kfree(adapter->nd_info);
 150                 adapter->nd_info = NULL;
 151         }
 152
 153         kfree(adapter->regd);
 154
 155         kfree(adapter);
 156         return 0;
 157 }
 158
 159 void mwifiex_queue_main_work(struct mwifiex_adapter *adapter)
 160 {
 161         unsigned long flags;
 162
 163         spin_lock_irqsave(&adapter->main_proc_lock, flags);
 164         if (adapter->mwifiex_processing) {
 165                 adapter->more_task_flag = true;
 166                 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
 167         } else {
 168                 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
 169                 queue_work(adapter->workqueue, &adapter->main_work);
 170         }
 171 }
 172 EXPORT_SYMBOL_GPL(mwifiex_queue_main_work);
 173
 174 static void mwifiex_queue_rx_work(struct mwifiex_adapter *adapter)
 175 {
 176         unsigned long flags;
 177
 178         spin_lock_irqsave(&adapter->rx_proc_lock, flags);
 179         if (adapter->rx_processing) {
 180                 spin_unlock_irqrestore(&adapter->rx_proc_lock, flags);
 181         } else {
 182                 spin_unlock_irqrestore(&adapter->rx_proc_lock, flags);
 183                 queue_work(adapter->rx_workqueue, &adapter->rx_work);
 184         }
 185 }
 186
 187 static int mwifiex_process_rx(struct mwifiex_adapter *adapter)
 188 {
 189         unsigned long flags;
 190         struct sk_buff *skb;
 191         struct mwifiex_rxinfo *rx_info;
 192
 193         spin_lock_irqsave(&adapter->rx_proc_lock, flags);
 194         if (adapter->rx_processing || adapter->rx_locked) {
 195                 spin_unlock_irqrestore(&adapter->rx_proc_lock, flags);
 196                 goto exit_rx_proc;
 197         } else {
 198                 adapter->rx_processing = true;
 199                 spin_unlock_irqrestore(&adapter->rx_proc_lock, flags);
 200         }
 201
 202         /* Check for Rx data */
 203         while ((skb = skb_dequeue(&adapter->rx_data_q))) {
 204                 atomic_dec(&adapter->rx_pending);
 205                 if ((adapter->delay_main_work ||
 206                      adapter->iface_type == MWIFIEX_USB) &&
 207                     (atomic_read(&adapter->rx_pending) < LOW_RX_PENDING)) {
 208                         if (adapter->if_ops.submit_rem_rx_urbs)
 209                                 adapter->if_ops.submit_rem_rx_urbs(adapter);
 210                         adapter->delay_main_work = false;
 211                         mwifiex_queue_main_work(adapter);
 212                 }
 213                 rx_info = MWIFIEX_SKB_RXCB(skb);
 214                 if (rx_info->buf_type == MWIFIEX_TYPE_AGGR_DATA) {
 215                         if (adapter->if_ops.deaggr_pkt)
 216                                 adapter->if_ops.deaggr_pkt(adapter, skb);
 217                         dev_kfree_skb_any(skb);
 218                 } else {
 219                         mwifiex_handle_rx_packet(adapter, skb);
 220                 }
 221         }
 222         spin_lock_irqsave(&adapter->rx_proc_lock, flags);
 223         adapter->rx_processing = false;
 224         spin_unlock_irqrestore(&adapter->rx_proc_lock, flags);
 225
 226 exit_rx_proc:
 227         return 0;
 228 }
 229
 230 /*
 231  * The main process.
 232  *
 233  * This function is the main procedure of the driver and handles various driver
 234  * operations. It runs in a loop and provides the core functionalities.
 235  *
 236  * The main responsibilities of this function are -
 237  *      - Ensure concurrency control
 238  *      - Handle pending interrupts and call interrupt handlers
 239  *      - Wake up the card if required
 240  *      - Handle command responses and call response handlers
 241  *      - Handle events and call event handlers
 242  *      - Execute pending commands
 243  *      - Transmit pending data packets
 244  */
 245 int mwifiex_main_process(struct mwifiex_adapter *adapter)
 246 {
 247         int ret = 0;
 248         unsigned long flags;
 249
 250         spin_lock_irqsave(&adapter->main_proc_lock, flags);
 251
 252         /* Check if already processing */
 253         if (adapter->mwifiex_processing || adapter->main_locked) {
 254                 adapter->more_task_flag = true;
 255                 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
 256                 return 0;
 257         } else {
 258                 adapter->mwifiex_processing = true;
 259                 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
 260         }
 261 process_start:
 262         do {
 263                 if (adapter->hw_status == MWIFIEX_HW_STATUS_NOT_READY)
 264                         break;
 265
 266                 /* For non-USB interfaces, If we process interrupts first, it
 267                  * would increase RX pending even further. Avoid this by
 268                  * checking if rx_pending has crossed high threshold and
 269                  * schedule rx work queue and then process interrupts.
 270                  * For USB interface, there are no interrupts. We already have
 271                  * HIGH_RX_PENDING check in usb.c
 272                  */
 273                 if (atomic_read(&adapter->rx_pending) >= HIGH_RX_PENDING &&
 274                     adapter->iface_type != MWIFIEX_USB) {
 275                         adapter->delay_main_work = true;
 276                         mwifiex_queue_rx_work(adapter);
 277                         break;
 278                 }
 279
 280                 /* Handle pending interrupt if any */
 281                 if (adapter->int_status) {
 282                         if (adapter->hs_activated)
 283                                 mwifiex_process_hs_config(adapter);
 284                         if (adapter->if_ops.process_int_status)
 285                                 adapter->if_ops.process_int_status(adapter);
 286                 }
 287
 288                 if (adapter->rx_work_enabled && adapter->data_received)
 289                         mwifiex_queue_rx_work(adapter);
 290
 291                 /* Need to wake up the card ? */
 292                 if ((adapter->ps_state == PS_STATE_SLEEP) &&
 293                     (adapter->pm_wakeup_card_req &&
 294                      !adapter->pm_wakeup_fw_try) &&
 295                     (is_command_pending(adapter) ||
 296                      !skb_queue_empty(&adapter->tx_data_q) ||
 297                      !mwifiex_bypass_txlist_empty(adapter) ||
 298                      !mwifiex_wmm_lists_empty(adapter))) {
 299                         adapter->pm_wakeup_fw_try = true;
 300                         mod_timer(&adapter->wakeup_timer, jiffies + (HZ*3));
 301                         adapter->if_ops.wakeup(adapter);
 302                         continue;
 303                 }
 304
 305                 if (IS_CARD_RX_RCVD(adapter)) {
 306                         adapter->data_received = false;
 307                         adapter->pm_wakeup_fw_try = false;
 308                         del_timer(&adapter->wakeup_timer);
 309                         if (adapter->ps_state == PS_STATE_SLEEP)
 310                                 adapter->ps_state = PS_STATE_AWAKE;
 311                 } else {
 312                         /* We have tried to wakeup the card already */
 313                         if (adapter->pm_wakeup_fw_try)
 314                                 break;
 315                         if (adapter->ps_state == PS_STATE_PRE_SLEEP)
 316                                 mwifiex_check_ps_cond(adapter);
 317
 318                         if (adapter->ps_state != PS_STATE_AWAKE)
 319                                 break;
 320                         if (adapter->tx_lock_flag) {
 321                                 if (adapter->iface_type == MWIFIEX_USB) {
 322                                         if (!adapter->usb_mc_setup)
 323                                                 break;
 324                                 } else
 325                                         break;
 326                         }
 327
 328                         if ((!adapter->scan_chan_gap_enabled &&
 329                              adapter->scan_processing) || adapter->data_sent ||
 330                              mwifiex_is_tdls_chan_switching
 331                              (mwifiex_get_priv(adapter,
 332                                                MWIFIEX_BSS_ROLE_STA)) ||
 333                             (mwifiex_wmm_lists_empty(adapter) &&
 334                              mwifiex_bypass_txlist_empty(adapter) &&
 335                              skb_queue_empty(&adapter->tx_data_q))) {
 336                                 if (adapter->cmd_sent || adapter->curr_cmd ||
 337                                         !mwifiex_is_send_cmd_allowed
 338                                                 (mwifiex_get_priv(adapter,
 339                                                 MWIFIEX_BSS_ROLE_STA)) ||
 340                                     (!is_command_pending(adapter)))
 341                                         break;
 342                         }
 343                 }
 344
 345                 /* Check for event */
 346                 if (adapter->event_received) {
 347                         adapter->event_received = false;
 348                         mwifiex_process_event(adapter);
 349                 }
 350
 351                 /* Check for Cmd Resp */
 352                 if (adapter->cmd_resp_received) {
 353                         adapter->cmd_resp_received = false;
 354                         mwifiex_process_cmdresp(adapter);
 355
 356                         /* call mwifiex back when init_fw is done */
 357                         if (adapter->hw_status == MWIFIEX_HW_STATUS_INIT_DONE) {
 358                                 adapter->hw_status = MWIFIEX_HW_STATUS_READY;
 359                                 mwifiex_init_fw_complete(adapter);
 360                         }
 361                 }
 362
 363                 /* Check if we need to confirm Sleep Request
 364                    received previously */
 365                 if (adapter->ps_state == PS_STATE_PRE_SLEEP)
 366                         mwifiex_check_ps_cond(adapter);
 367
 368                 /* * The ps_state may have been changed during processing of
 369                  * Sleep Request event.
 370                  */
 371                 if ((adapter->ps_state == PS_STATE_SLEEP) ||
 372                     (adapter->ps_state == PS_STATE_PRE_SLEEP) ||
 373                     (adapter->ps_state == PS_STATE_SLEEP_CFM)) {
 374                         continue;
 375                 }
 376
 377                 if (adapter->tx_lock_flag) {
 378                         if (adapter->iface_type == MWIFIEX_USB) {
 379                                 if (!adapter->usb_mc_setup)
 380                                         continue;
 381                         } else
 382                                 continue;
 383                 }
 384
 385                 if (!adapter->cmd_sent && !adapter->curr_cmd &&
 386                     mwifiex_is_send_cmd_allowed
 387                     (mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA))) {
 388                         if (mwifiex_exec_next_cmd(adapter) == -1) {
 389                                 ret = -1;
 390                                 break;
 391                         }
 392                 }
 393
 394                 /** If USB Multi channel setup ongoing,
 395                  *  wait for ready to tx data.
 396                  */
 397                 if (adapter->iface_type == MWIFIEX_USB &&
 398                     adapter->usb_mc_setup)
 399                         continue;
 400
 401                 if ((adapter->scan_chan_gap_enabled ||
 402                      !adapter->scan_processing) &&
 403                     !adapter->data_sent &&
 404                     !skb_queue_empty(&adapter->tx_data_q)) {
 405                         mwifiex_process_tx_queue(adapter);
 406                         if (adapter->hs_activated) {
 407                                 clear_bit(MWIFIEX_IS_HS_CONFIGURED,
 408                                           &adapter->work_flags);
 409                                 mwifiex_hs_activated_event
 410                                         (mwifiex_get_priv
 411                                         (adapter, MWIFIEX_BSS_ROLE_ANY),
 412                                         false);
 413                         }
 414                 }
 415
 416                 if ((adapter->scan_chan_gap_enabled ||
 417                      !adapter->scan_processing) &&
 418                     !adapter->data_sent &&
 419                     !mwifiex_bypass_txlist_empty(adapter) &&
 420                     !mwifiex_is_tdls_chan_switching
 421                         (mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA))) {
 422                         mwifiex_process_bypass_tx(adapter);
 423                         if (adapter->hs_activated) {
 424                                 clear_bit(MWIFIEX_IS_HS_CONFIGURED,
 425                                           &adapter->work_flags);
 426                                 mwifiex_hs_activated_event
 427                                         (mwifiex_get_priv
 428                                          (adapter, MWIFIEX_BSS_ROLE_ANY),
 429                                          false);
 430                         }
 431                 }
 432
 433                 if ((adapter->scan_chan_gap_enabled ||
 434                      !adapter->scan_processing) &&
 435                     !adapter->data_sent && !mwifiex_wmm_lists_empty(adapter) &&
 436                     !mwifiex_is_tdls_chan_switching
 437                         (mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA))) {
 438                         mwifiex_wmm_process_tx(adapter);
 439                         if (adapter->hs_activated) {
 440                                 clear_bit(MWIFIEX_IS_HS_CONFIGURED,
 441                                           &adapter->work_flags);
 442                                 mwifiex_hs_activated_event
 443                                         (mwifiex_get_priv
 444                                          (adapter, MWIFIEX_BSS_ROLE_ANY),
 445                                          false);
 446                         }
 447                 }
 448
 449                 if (adapter->delay_null_pkt && !adapter->cmd_sent &&
 450                     !adapter->curr_cmd && !is_command_pending(adapter) &&
 451                     (mwifiex_wmm_lists_empty(adapter) &&
 452                      mwifiex_bypass_txlist_empty(adapter) &&
 453                      skb_queue_empty(&adapter->tx_data_q))) {
 454                         if (!mwifiex_send_null_packet
 455                             (mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA),
 456                              MWIFIEX_TxPD_POWER_MGMT_NULL_PACKET |
 457                              MWIFIEX_TxPD_POWER_MGMT_LAST_PACKET)) {
 458                                 adapter->delay_null_pkt = false;
 459                                 adapter->ps_state = PS_STATE_SLEEP;
 460                         }
 461                         break;
 462                 }
 463         } while (true);
 464
 465         spin_lock_irqsave(&adapter->main_proc_lock, flags);
 466         if (adapter->more_task_flag) {
 467                 adapter->more_task_flag = false;
 468                 spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
 469                 goto process_start;
 470         }
 471         adapter->mwifiex_processing = false;
 472         spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
 473
 474         return ret;
 475 }
 476 EXPORT_SYMBOL_GPL(mwifiex_main_process);
 477
 478 /*
 479  * This function frees the adapter structure.
 480  *
 481  * Additionally, this closes the netlink socket, frees the timers
 482  * and private structures.
 483  */
 484 static void mwifiex_free_adapter(struct mwifiex_adapter *adapter)
 485 {
 486         if (!adapter) {
 487                 pr_err("%s: adapter is NULL\n", __func__);
 488                 return;
 489         }
 490
 491         mwifiex_unregister(adapter);
 492         pr_debug("info: %s: free adapter\n", __func__);
 493 }
 494
 495 /*
 496  * This function cancels all works in the queue and destroys
 497  * the main workqueue.
 498  */
 499 static void mwifiex_terminate_workqueue(struct mwifiex_adapter *adapter)
 500 {
 501         if (adapter->workqueue) {
 502                 flush_workqueue(adapter->workqueue);
 503                 destroy_workqueue(adapter->workqueue);
 504                 adapter->workqueue = NULL;
 505         }
 506
 507         if (adapter->rx_workqueue) {
 508                 flush_workqueue(adapter->rx_workqueue);
 509                 destroy_workqueue(adapter->rx_workqueue);
 510                 adapter->rx_workqueue = NULL;
 511         }
 512 }
 513
 514 /*
 515  * This function gets firmware and initializes it.
 516  *
 517  * The main initialization steps followed are -
 518  *      - Download the correct firmware to card
 519  *      - Issue the init commands to firmware
 520  */
 521 static int _mwifiex_fw_dpc(const struct firmware *firmware, void *context)
 522 {
 523         int ret;
 524         char fmt[64];
 525         struct mwifiex_adapter *adapter = context;
 526         struct mwifiex_fw_image fw;
 527         bool init_failed = false;
 528         struct wireless_dev *wdev;
 529         struct completion *fw_done = adapter->fw_done;
 530
 531         if (!firmware) {
 532                 mwifiex_dbg(adapter, ERROR,
 533                             "Failed to get firmware %s\n", adapter->fw_name);
 534                 goto err_dnld_fw;
 535         }
 536
 537         memset(&fw, 0, sizeof(struct mwifiex_fw_image));
 538         adapter->firmware = firmware;
 539         fw.fw_buf = (u8 *) adapter->firmware->data;
 540         fw.fw_len = adapter->firmware->size;
 541
 542         if (adapter->if_ops.dnld_fw) {
 543                 ret = adapter->if_ops.dnld_fw(adapter, &fw);
 544         } else {
 545                 ret = mwifiex_dnld_fw(adapter, &fw);
 546         }
 547
 548         if (ret == -1)
 549                 goto err_dnld_fw;
 550
 551         mwifiex_dbg(adapter, MSG, "WLAN FW is active\n");
 552
 553         if (cal_data_cfg) {
 554                 if ((reject_firmware(&adapter->cal_data, cal_data_cfg,
 555                                       adapter->dev)) < 0)
 556                         mwifiex_dbg(adapter, ERROR,
 557                                     "Cal data reject_firmware() failed\n");
 558         }
 559
 560         /* enable host interrupt after fw dnld is successful */
 561         if (adapter->if_ops.enable_int) {
 562                 if (adapter->if_ops.enable_int(adapter))
 563                         goto err_dnld_fw;
 564         }
 565
 566         adapter->init_wait_q_woken = false;
 567         ret = mwifiex_init_fw(adapter);
 568         if (ret == -1) {
 569                 goto err_init_fw;
 570         } else if (!ret) {
 571                 adapter->hw_status = MWIFIEX_HW_STATUS_READY;
 572                 goto done;
 573         }
 574         /* Wait for mwifiex_init to complete */
 575         if (!adapter->mfg_mode) {
 576                 wait_event_interruptible(adapter->init_wait_q,
 577                                          adapter->init_wait_q_woken);
 578                 if (adapter->hw_status != MWIFIEX_HW_STATUS_READY)
 579                         goto err_init_fw;
 580         }
 581
 582         if (!adapter->wiphy) {
 583                 if (mwifiex_register_cfg80211(adapter)) {
 584                         mwifiex_dbg(adapter, ERROR,
 585                                     "cannot register with cfg80211\n");
 586                         goto err_init_fw;
 587                 }
 588         }
 589
 590         if (mwifiex_init_channel_scan_gap(adapter)) {
 591                 mwifiex_dbg(adapter, ERROR,
 592                             "could not init channel stats table\n");
 593                 goto err_init_chan_scan;
 594         }
 595
 596         if (driver_mode) {
 597                 driver_mode &= MWIFIEX_DRIVER_MODE_BITMASK;
 598                 driver_mode |= MWIFIEX_DRIVER_MODE_STA;
 599         }
 600
 601         rtnl_lock();
 602         /* Create station interface by default */
 603         wdev = mwifiex_add_virtual_intf(adapter->wiphy, "mlan%d", NET_NAME_ENUM,
 604                                         NL80211_IFTYPE_STATION, NULL);
 605         if (IS_ERR(wdev)) {
 606                 mwifiex_dbg(adapter, ERROR,
 607                             "cannot create default STA interface\n");
 608                 rtnl_unlock();
 609                 goto err_add_intf;
 610         }
 611
 612         if (driver_mode & MWIFIEX_DRIVER_MODE_UAP) {
 613                 wdev = mwifiex_add_virtual_intf(adapter->wiphy, "uap%d", NET_NAME_ENUM,
 614                                                 NL80211_IFTYPE_AP, NULL);
 615                 if (IS_ERR(wdev)) {
 616                         mwifiex_dbg(adapter, ERROR,
 617                                     "cannot create AP interface\n");
 618                         rtnl_unlock();
 619                         goto err_add_intf;
 620                 }
 621         }
 622
 623         if (driver_mode & MWIFIEX_DRIVER_MODE_P2P) {
 624                 wdev = mwifiex_add_virtual_intf(adapter->wiphy, "p2p%d", NET_NAME_ENUM,
 625                                                 NL80211_IFTYPE_P2P_CLIENT, NULL);
 626                 if (IS_ERR(wdev)) {
 627                         mwifiex_dbg(adapter, ERROR,
 628                                     "cannot create p2p client interface\n");
 629                         rtnl_unlock();
 630                         goto err_add_intf;
 631                 }
 632         }
 633         rtnl_unlock();
 634
 635         mwifiex_drv_get_driver_version(adapter, fmt, sizeof(fmt) - 1);
 636         mwifiex_dbg(adapter, MSG, "driver_version = %s\n", fmt);
 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 = reject_firmware_nowait(THIS_MODULE, 1, adapter->fw_name,
 711                                               adapter->dev, GFP_KERNEL, adapter,
 712                                               mwifiex_fw_dpc);
 713         } else {
 714                 ret = reject_firmware(&adapter->firmware,
 715                                        adapter->fw_name,
 716                                        adapter->dev);
 717         }
 718
 719         if (ret < 0)
 720                 mwifiex_dbg(adapter, ERROR, "reject_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                 unsigned long flags;
 829                 int id;
 830
 831                 spin_lock_irqsave(&priv->ack_status_lock, flags);
 832                 id = idr_alloc(&priv->ack_status_frames, orig_skb,
 833                                1, 0x10, GFP_ATOMIC);
 834                 spin_unlock_irqrestore(&priv->ack_status_lock, flags);
 835
 836                 if (id >= 0) {
 837                         tx_info = MWIFIEX_SKB_TXCB(skb);
 838                         tx_info->ack_frame_id = id;
 839                         tx_info->flags |= flag;
 840                         orig_tx_info = MWIFIEX_SKB_TXCB(orig_skb);
 841                         orig_tx_info->ack_frame_id = id;
 842                         orig_tx_info->flags |= flag;
 843
 844                         if (flag == MWIFIEX_BUF_FLAG_ACTION_TX_STATUS && cookie)
 845                                 orig_tx_info->cookie = *cookie;
 846
 847                 } else if (skb_shared(skb)) {
 848                         kfree_skb(orig_skb);
 849                 } else {
 850                         kfree_skb(skb);
 851                         skb = orig_skb;
 852                 }
 853         } else {
 854                 /* couldn't clone -- lose tx status ... */
 855                 skb = orig_skb;
 856         }
 857
 858         return skb;
 859 }
 860
 861 /*
 862  * CFG802.11 network device handler for data transmission.
 863  */
 864 static netdev_tx_t
 865 mwifiex_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
 866 {
 867         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 868         struct sk_buff *new_skb;
 869         struct mwifiex_txinfo *tx_info;
 870         bool multicast;
 871
 872         mwifiex_dbg(priv->adapter, DATA,
 873                     "data: %lu BSS(%d-%d): Data <= kernel\n",
 874                     jiffies, priv->bss_type, priv->bss_num);
 875
 876         if (test_bit(MWIFIEX_SURPRISE_REMOVED, &priv->adapter->work_flags)) {
 877                 kfree_skb(skb);
 878                 priv->stats.tx_dropped++;
 879                 return 0;
 880         }
 881         if (!skb->len || (skb->len > ETH_FRAME_LEN)) {
 882                 mwifiex_dbg(priv->adapter, ERROR,
 883                             "Tx: bad skb len %d\n", skb->len);
 884                 kfree_skb(skb);
 885                 priv->stats.tx_dropped++;
 886                 return 0;
 887         }
 888         if (skb_headroom(skb) < MWIFIEX_MIN_DATA_HEADER_LEN) {
 889                 mwifiex_dbg(priv->adapter, DATA,
 890                             "data: Tx: insufficient skb headroom %d\n",
 891                             skb_headroom(skb));
 892                 /* Insufficient skb headroom - allocate a new skb */
 893                 new_skb =
 894                         skb_realloc_headroom(skb, MWIFIEX_MIN_DATA_HEADER_LEN);
 895                 if (unlikely(!new_skb)) {
 896                         mwifiex_dbg(priv->adapter, ERROR,
 897                                     "Tx: cannot alloca new_skb\n");
 898                         kfree_skb(skb);
 899                         priv->stats.tx_dropped++;
 900                         return 0;
 901                 }
 902                 kfree_skb(skb);
 903                 skb = new_skb;
 904                 mwifiex_dbg(priv->adapter, INFO,
 905                             "info: new skb headroomd %d\n",
 906                             skb_headroom(skb));
 907         }
 908
 909         tx_info = MWIFIEX_SKB_TXCB(skb);
 910         memset(tx_info, 0, sizeof(*tx_info));
 911         tx_info->bss_num = priv->bss_num;
 912         tx_info->bss_type = priv->bss_type;
 913         tx_info->pkt_len = skb->len;
 914
 915         multicast = is_multicast_ether_addr(skb->data);
 916
 917         if (unlikely(!multicast && skb->sk &&
 918                      skb_shinfo(skb)->tx_flags & SKBTX_WIFI_STATUS &&
 919                      priv->adapter->fw_api_ver == MWIFIEX_FW_V15))
 920                 skb = mwifiex_clone_skb_for_tx_status(priv,
 921                                                       skb,
 922                                         MWIFIEX_BUF_FLAG_EAPOL_TX_STATUS, NULL);
 923
 924         /* Record the current time the packet was queued; used to
 925          * determine the amount of time the packet was queued in
 926          * the driver before it was sent to the firmware.
 927          * The delay is then sent along with the packet to the
 928          * firmware for aggregate delay calculation for stats and
 929          * MSDU lifetime expiry.
 930          */
 931         __net_timestamp(skb);
 932
 933         if (ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info) &&
 934             priv->bss_type == MWIFIEX_BSS_TYPE_STA &&
 935             !ether_addr_equal_unaligned(priv->cfg_bssid, skb->data)) {
 936                 if (priv->adapter->auto_tdls && priv->check_tdls_tx)
 937                         mwifiex_tdls_check_tx(priv, skb);
 938         }
 939
 940         mwifiex_queue_tx_pkt(priv, skb);
 941
 942         return 0;
 943 }
 944
 945 int mwifiex_set_mac_address(struct mwifiex_private *priv,
 946                             struct net_device *dev, bool external,
 947                             u8 *new_mac)
 948 {
 949         int ret;
 950         u64 mac_addr, old_mac_addr;
 951
 952         old_mac_addr = ether_addr_to_u64(priv->curr_addr);
 953
 954         if (external) {
 955                 mac_addr = ether_addr_to_u64(new_mac);
 956         } else {
 957                 /* Internal mac address change */
 958                 if (priv->bss_type == MWIFIEX_BSS_TYPE_ANY)
 959                         return -ENOTSUPP;
 960
 961                 mac_addr = old_mac_addr;
 962
 963                 if (priv->bss_type == MWIFIEX_BSS_TYPE_P2P) {
 964                         mac_addr |= BIT_ULL(MWIFIEX_MAC_LOCAL_ADMIN_BIT);
 965                         mac_addr += priv->bss_num;
 966                 } else if (priv->adapter->priv[0] != priv) {
 967                         /* Set mac address based on bss_type/bss_num */
 968                         mac_addr ^= BIT_ULL(priv->bss_type + 8);
 969                         mac_addr += priv->bss_num;
 970                 }
 971         }
 972
 973         u64_to_ether_addr(mac_addr, priv->curr_addr);
 974
 975         /* Send request to firmware */
 976         ret = mwifiex_send_cmd(priv, HostCmd_CMD_802_11_MAC_ADDRESS,
 977                                HostCmd_ACT_GEN_SET, 0, NULL, true);
 978
 979         if (ret) {
 980                 u64_to_ether_addr(old_mac_addr, priv->curr_addr);
 981                 mwifiex_dbg(priv->adapter, ERROR,
 982                             "set mac address failed: ret=%d\n", ret);
 983                 return ret;
 984         }
 985
 986         ether_addr_copy(dev->dev_addr, priv->curr_addr);
 987         return 0;
 988 }
 989
 990 /* CFG802.11 network device handler for setting MAC address.
 991  */
 992 static int
 993 mwifiex_ndo_set_mac_address(struct net_device *dev, void *addr)
 994 {
 995         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 996         struct sockaddr *hw_addr = addr;
 997
 998         return mwifiex_set_mac_address(priv, dev, true, hw_addr->sa_data);
 999 }
1000
1001 /*
1002  * CFG802.11 network device handler for setting multicast list.
1003  */
1004 static void mwifiex_set_multicast_list(struct net_device *dev)
1005 {
1006         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1007         struct mwifiex_multicast_list mcast_list;
1008
1009         if (dev->flags & IFF_PROMISC) {
1010                 mcast_list.mode = MWIFIEX_PROMISC_MODE;
1011         } else if (dev->flags & IFF_ALLMULTI ||
1012                    netdev_mc_count(dev) > MWIFIEX_MAX_MULTICAST_LIST_SIZE) {
1013                 mcast_list.mode = MWIFIEX_ALL_MULTI_MODE;
1014         } else {
1015                 mcast_list.mode = MWIFIEX_MULTICAST_MODE;
1016                 mcast_list.num_multicast_addr =
1017                         mwifiex_copy_mcast_addr(&mcast_list, dev);
1018         }
1019         mwifiex_request_set_multicast_list(priv, &mcast_list);
1020 }
1021
1022 /*
1023  * CFG802.11 network device handler for transmission timeout.
1024  */
1025 static void
1026 mwifiex_tx_timeout(struct net_device *dev)
1027 {
1028         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1029
1030         priv->num_tx_timeout++;
1031         priv->tx_timeout_cnt++;
1032         mwifiex_dbg(priv->adapter, ERROR,
1033                     "%lu : Tx timeout(#%d), bss_type-num = %d-%d\n",
1034                     jiffies, priv->tx_timeout_cnt, priv->bss_type,
1035                     priv->bss_num);
1036         mwifiex_set_trans_start(dev);
1037
1038         if (priv->tx_timeout_cnt > TX_TIMEOUT_THRESHOLD &&
1039             priv->adapter->if_ops.card_reset) {
1040                 mwifiex_dbg(priv->adapter, ERROR,
1041                             "tx_timeout_cnt exceeds threshold.\t"
1042                             "Triggering card reset!\n");
1043                 priv->adapter->if_ops.card_reset(priv->adapter);
1044         }
1045 }
1046
1047 void mwifiex_multi_chan_resync(struct mwifiex_adapter *adapter)
1048 {
1049         struct usb_card_rec *card = adapter->card;
1050         struct mwifiex_private *priv;
1051         u16 tx_buf_size;
1052         int i, ret;
1053
1054         card->mc_resync_flag = true;
1055         for (i = 0; i < MWIFIEX_TX_DATA_PORT; i++) {
1056                 if (atomic_read(&card->port[i].tx_data_urb_pending)) {
1057                         mwifiex_dbg(adapter, WARN, "pending data urb in sys\n");
1058                         return;
1059                 }
1060         }
1061
1062         card->mc_resync_flag = false;
1063         tx_buf_size = 0xffff;
1064         priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
1065         ret = mwifiex_send_cmd(priv, HostCmd_CMD_RECONFIGURE_TX_BUFF,
1066                                HostCmd_ACT_GEN_SET, 0, &tx_buf_size, false);
1067         if (ret)
1068                 mwifiex_dbg(adapter, ERROR,
1069                             "send reconfig tx buf size cmd err\n");
1070 }
1071 EXPORT_SYMBOL_GPL(mwifiex_multi_chan_resync);
1072
1073 void mwifiex_upload_device_dump(struct mwifiex_adapter *adapter)
1074 {
1075         /* Dump all the memory data into single file, a userspace script will
1076          * be used to split all the memory data to multiple files
1077          */
1078         mwifiex_dbg(adapter, MSG,
1079                     "== mwifiex dump information to /sys/class/devcoredump start\n");
1080         dev_coredumpv(adapter->dev, adapter->devdump_data, adapter->devdump_len,
1081                       GFP_KERNEL);
1082         mwifiex_dbg(adapter, MSG,
1083                     "== mwifiex dump information to /sys/class/devcoredump end\n");
1084
1085         /* Device dump data will be freed in device coredump release function
1086          * after 5 min. Here reset adapter->devdump_data and ->devdump_len
1087          * to avoid it been accidentally reused.
1088          */
1089         adapter->devdump_data = NULL;
1090         adapter->devdump_len = 0;
1091 }
1092 EXPORT_SYMBOL_GPL(mwifiex_upload_device_dump);
1093
1094 void mwifiex_drv_info_dump(struct mwifiex_adapter *adapter)
1095 {
1096         char *p;
1097         char drv_version[64];
1098         struct usb_card_rec *cardp;
1099         struct sdio_mmc_card *sdio_card;
1100         struct mwifiex_private *priv;
1101         int i, idx;
1102         struct netdev_queue *txq;
1103         struct mwifiex_debug_info *debug_info;
1104
1105         mwifiex_dbg(adapter, MSG, "===mwifiex driverinfo dump start===\n");
1106
1107         p = adapter->devdump_data;
1108         strcpy(p, "========Start dump driverinfo========\n");
1109         p += strlen("========Start dump driverinfo========\n");
1110         p += sprintf(p, "driver_name = " "\"mwifiex\"\n");
1111
1112         mwifiex_drv_get_driver_version(adapter, drv_version,
1113                                        sizeof(drv_version) - 1);
1114         p += sprintf(p, "driver_version = %s\n", drv_version);
1115
1116         if (adapter->iface_type == MWIFIEX_USB) {
1117                 cardp = (struct usb_card_rec *)adapter->card;
1118                 p += sprintf(p, "tx_cmd_urb_pending = %d\n",
1119                              atomic_read(&cardp->tx_cmd_urb_pending));
1120                 p += sprintf(p, "tx_data_urb_pending_port_0 = %d\n",
1121                              atomic_read(&cardp->port[0].tx_data_urb_pending));
1122                 p += sprintf(p, "tx_data_urb_pending_port_1 = %d\n",
1123                              atomic_read(&cardp->port[1].tx_data_urb_pending));
1124                 p += sprintf(p, "rx_cmd_urb_pending = %d\n",
1125                              atomic_read(&cardp->rx_cmd_urb_pending));
1126                 p += sprintf(p, "rx_data_urb_pending = %d\n",
1127                              atomic_read(&cardp->rx_data_urb_pending));
1128         }
1129
1130         p += sprintf(p, "tx_pending = %d\n",
1131                      atomic_read(&adapter->tx_pending));
1132         p += sprintf(p, "rx_pending = %d\n",
1133                      atomic_read(&adapter->rx_pending));
1134
1135         if (adapter->iface_type == MWIFIEX_SDIO) {
1136                 sdio_card = (struct sdio_mmc_card *)adapter->card;
1137                 p += sprintf(p, "\nmp_rd_bitmap=0x%x curr_rd_port=0x%x\n",
1138                              sdio_card->mp_rd_bitmap, sdio_card->curr_rd_port);
1139                 p += sprintf(p, "mp_wr_bitmap=0x%x curr_wr_port=0x%x\n",
1140                              sdio_card->mp_wr_bitmap, sdio_card->curr_wr_port);
1141         }
1142
1143         for (i = 0; i < adapter->priv_num; i++) {
1144                 if (!adapter->priv[i] || !adapter->priv[i]->netdev)
1145                         continue;
1146                 priv = adapter->priv[i];
1147                 p += sprintf(p, "\n[interface  : \"%s\"]\n",
1148                              priv->netdev->name);
1149                 p += sprintf(p, "wmm_tx_pending[0] = %d\n",
1150                              atomic_read(&priv->wmm_tx_pending[0]));
1151                 p += sprintf(p, "wmm_tx_pending[1] = %d\n",
1152                              atomic_read(&priv->wmm_tx_pending[1]));
1153                 p += sprintf(p, "wmm_tx_pending[2] = %d\n",
1154                              atomic_read(&priv->wmm_tx_pending[2]));
1155                 p += sprintf(p, "wmm_tx_pending[3] = %d\n",
1156                              atomic_read(&priv->wmm_tx_pending[3]));
1157                 p += sprintf(p, "media_state=\"%s\"\n", !priv->media_connected ?
1158                              "Disconnected" : "Connected");
1159                 p += sprintf(p, "carrier %s\n", (netif_carrier_ok(priv->netdev)
1160                              ? "on" : "off"));
1161                 for (idx = 0; idx < priv->netdev->num_tx_queues; idx++) {
1162                         txq = netdev_get_tx_queue(priv->netdev, idx);
1163                         p += sprintf(p, "tx queue %d:%s  ", idx,
1164                                      netif_tx_queue_stopped(txq) ?
1165                                      "stopped" : "started");
1166                 }
1167                 p += sprintf(p, "\n%s: num_tx_timeout = %d\n",
1168                              priv->netdev->name, priv->num_tx_timeout);
1169         }
1170
1171         if (adapter->iface_type == MWIFIEX_SDIO ||
1172             adapter->iface_type == MWIFIEX_PCIE) {
1173                 p += sprintf(p, "\n=== %s register dump===\n",
1174                              adapter->iface_type == MWIFIEX_SDIO ?
1175                                                         "SDIO" : "PCIE");
1176                 if (adapter->if_ops.reg_dump)
1177                         p += adapter->if_ops.reg_dump(adapter, p);
1178         }
1179         p += sprintf(p, "\n=== more debug information\n");
1180         debug_info = kzalloc(sizeof(*debug_info), GFP_KERNEL);
1181         if (debug_info) {
1182                 for (i = 0; i < adapter->priv_num; i++) {
1183                         if (!adapter->priv[i] || !adapter->priv[i]->netdev)
1184                                 continue;
1185                         priv = adapter->priv[i];
1186                         mwifiex_get_debug_info(priv, debug_info);
1187                         p += mwifiex_debug_info_to_buffer(priv, p, debug_info);
1188                         break;
1189                 }
1190                 kfree(debug_info);
1191         }
1192
1193         strcpy(p, "\n========End dump========\n");
1194         p += strlen("\n========End dump========\n");
1195         mwifiex_dbg(adapter, MSG, "===mwifiex driverinfo dump end===\n");
1196         adapter->devdump_len = p - (char *)adapter->devdump_data;
1197 }
1198 EXPORT_SYMBOL_GPL(mwifiex_drv_info_dump);
1199
1200 void mwifiex_prepare_fw_dump_info(struct mwifiex_adapter *adapter)
1201 {
1202         u8 idx;
1203         char *fw_dump_ptr;
1204         u32 dump_len = 0;
1205
1206         for (idx = 0; idx < adapter->num_mem_types; idx++) {
1207                 struct memory_type_mapping *entry =
1208                                 &adapter->mem_type_mapping_tbl[idx];
1209
1210                 if (entry->mem_ptr) {
1211                         dump_len += (strlen("========Start dump ") +
1212                                         strlen(entry->mem_name) +
1213                                         strlen("========\n") +
1214                                         (entry->mem_size + 1) +
1215                                         strlen("\n========End dump========\n"));
1216                 }
1217         }
1218
1219         if (dump_len + 1 + adapter->devdump_len > MWIFIEX_FW_DUMP_SIZE) {
1220                 /* Realloc in case buffer overflow */
1221                 fw_dump_ptr = vzalloc(dump_len + 1 + adapter->devdump_len);
1222                 mwifiex_dbg(adapter, MSG, "Realloc device dump data.\n");
1223                 if (!fw_dump_ptr) {
1224                         vfree(adapter->devdump_data);
1225                         mwifiex_dbg(adapter, ERROR,
1226                                     "vzalloc devdump data failure!\n");
1227                         return;
1228                 }
1229
1230                 memmove(fw_dump_ptr, adapter->devdump_data,
1231                         adapter->devdump_len);
1232                 vfree(adapter->devdump_data);
1233                 adapter->devdump_data = fw_dump_ptr;
1234         }
1235
1236         fw_dump_ptr = (char *)adapter->devdump_data + adapter->devdump_len;
1237
1238         for (idx = 0; idx < adapter->num_mem_types; idx++) {
1239                 struct memory_type_mapping *entry =
1240                                         &adapter->mem_type_mapping_tbl[idx];
1241
1242                 if (entry->mem_ptr) {
1243                         strcpy(fw_dump_ptr, "========Start dump ");
1244                         fw_dump_ptr += strlen("========Start dump ");
1245
1246                         strcpy(fw_dump_ptr, entry->mem_name);
1247                         fw_dump_ptr += strlen(entry->mem_name);
1248
1249                         strcpy(fw_dump_ptr, "========\n");
1250                         fw_dump_ptr += strlen("========\n");
1251
1252                         memcpy(fw_dump_ptr, entry->mem_ptr, entry->mem_size);
1253                         fw_dump_ptr += entry->mem_size;
1254
1255                         strcpy(fw_dump_ptr, "\n========End dump========\n");
1256                         fw_dump_ptr += strlen("\n========End dump========\n");
1257                 }
1258         }
1259
1260         adapter->devdump_len = fw_dump_ptr - (char *)adapter->devdump_data;
1261
1262         for (idx = 0; idx < adapter->num_mem_types; idx++) {
1263                 struct memory_type_mapping *entry =
1264                         &adapter->mem_type_mapping_tbl[idx];
1265
1266                 vfree(entry->mem_ptr);
1267                 entry->mem_ptr = NULL;
1268                 entry->mem_size = 0;
1269         }
1270 }
1271 EXPORT_SYMBOL_GPL(mwifiex_prepare_fw_dump_info);
1272
1273 /*
1274  * CFG802.11 network device handler for statistics retrieval.
1275  */
1276 static struct net_device_stats *mwifiex_get_stats(struct net_device *dev)
1277 {
1278         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1279
1280         return &priv->stats;
1281 }
1282
1283 static u16
1284 mwifiex_netdev_select_wmm_queue(struct net_device *dev, struct sk_buff *skb,
1285                                 struct net_device *sb_dev,
1286                                 select_queue_fallback_t fallback)
1287 {
1288         skb->priority = cfg80211_classify8021d(skb, NULL);
1289         return mwifiex_1d_to_wmm_queue[skb->priority];
1290 }
1291
1292 /* Network device handlers */
1293 static const struct net_device_ops mwifiex_netdev_ops = {
1294         .ndo_open = mwifiex_open,
1295         .ndo_stop = mwifiex_close,
1296         .ndo_start_xmit = mwifiex_hard_start_xmit,
1297         .ndo_set_mac_address = mwifiex_ndo_set_mac_address,
1298         .ndo_validate_addr = eth_validate_addr,
1299         .ndo_tx_timeout = mwifiex_tx_timeout,
1300         .ndo_get_stats = mwifiex_get_stats,
1301         .ndo_set_rx_mode = mwifiex_set_multicast_list,
1302         .ndo_select_queue = mwifiex_netdev_select_wmm_queue,
1303 };
1304
1305 /*
1306  * This function initializes the private structure parameters.
1307  *
1308  * The following wait queues are initialized -
1309  *      - IOCTL wait queue
1310  *      - Command wait queue
1311  *      - Statistics wait queue
1312  *
1313  * ...and the following default parameters are set -
1314  *      - Current key index     : Set to 0
1315  *      - Rate index            : Set to auto
1316  *      - Media connected       : Set to disconnected
1317  *      - Adhoc link sensed     : Set to false
1318  *      - Nick name             : Set to null
1319  *      - Number of Tx timeout  : Set to 0
1320  *      - Device address        : Set to current address
1321  *      - Rx histogram statistc : Set to 0
1322  *
1323  * In addition, the CFG80211 work queue is also created.
1324  */
1325 void mwifiex_init_priv_params(struct mwifiex_private *priv,
1326                               struct net_device *dev)
1327 {
1328         dev->netdev_ops = &mwifiex_netdev_ops;
1329         dev->needs_free_netdev = true;
1330         /* Initialize private structure */
1331         priv->current_key_index = 0;
1332         priv->media_connected = false;
1333         memset(priv->mgmt_ie, 0,
1334                sizeof(struct mwifiex_ie) * MAX_MGMT_IE_INDEX);
1335         priv->beacon_idx = MWIFIEX_AUTO_IDX_MASK;
1336         priv->proberesp_idx = MWIFIEX_AUTO_IDX_MASK;
1337         priv->assocresp_idx = MWIFIEX_AUTO_IDX_MASK;
1338         priv->gen_idx = MWIFIEX_AUTO_IDX_MASK;
1339         priv->num_tx_timeout = 0;
1340         if (is_valid_ether_addr(dev->dev_addr))
1341                 ether_addr_copy(priv->curr_addr, dev->dev_addr);
1342         else
1343                 ether_addr_copy(priv->curr_addr, priv->adapter->perm_addr);
1344
1345         if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA ||
1346             GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_UAP) {
1347                 priv->hist_data = kmalloc(sizeof(*priv->hist_data), GFP_KERNEL);
1348                 if (priv->hist_data)
1349                         mwifiex_hist_data_reset(priv);
1350         }
1351 }
1352
1353 /*
1354  * This function check if command is pending.
1355  */
1356 int is_command_pending(struct mwifiex_adapter *adapter)
1357 {
1358         unsigned long flags;
1359         int is_cmd_pend_q_empty;
1360
1361         spin_lock_irqsave(&adapter->cmd_pending_q_lock, flags);
1362         is_cmd_pend_q_empty = list_empty(&adapter->cmd_pending_q);
1363         spin_unlock_irqrestore(&adapter->cmd_pending_q_lock, flags);
1364
1365         return !is_cmd_pend_q_empty;
1366 }
1367
1368 /*
1369  * This is the RX work queue function.
1370  *
1371  * It handles the RX operations.
1372  */
1373 static void mwifiex_rx_work_queue(struct work_struct *work)
1374 {
1375         struct mwifiex_adapter *adapter =
1376                 container_of(work, struct mwifiex_adapter, rx_work);
1377
1378         if (test_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags))
1379                 return;
1380         mwifiex_process_rx(adapter);
1381 }
1382
1383 /*
1384  * This is the main work queue function.
1385  *
1386  * It handles the main process, which in turn handles the complete
1387  * driver operations.
1388  */
1389 static void mwifiex_main_work_queue(struct work_struct *work)
1390 {
1391         struct mwifiex_adapter *adapter =
1392                 container_of(work, struct mwifiex_adapter, main_work);
1393
1394         if (test_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags))
1395                 return;
1396         mwifiex_main_process(adapter);
1397 }
1398
1399 /* Common teardown code used for both device removal and reset */
1400 static void mwifiex_uninit_sw(struct mwifiex_adapter *adapter)
1401 {
1402         struct mwifiex_private *priv;
1403         int i;
1404
1405         /* We can no longer handle interrupts once we start doing the teardown
1406          * below.
1407          */
1408         if (adapter->if_ops.disable_int)
1409                 adapter->if_ops.disable_int(adapter);
1410
1411         set_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags);
1412         mwifiex_terminate_workqueue(adapter);
1413         adapter->int_status = 0;
1414
1415         /* Stop data */
1416         for (i = 0; i < adapter->priv_num; i++) {
1417                 priv = adapter->priv[i];
1418                 if (priv && priv->netdev) {
1419                         mwifiex_stop_net_dev_queue(priv->netdev, adapter);
1420                         if (netif_carrier_ok(priv->netdev))
1421                                 netif_carrier_off(priv->netdev);
1422                         netif_device_detach(priv->netdev);
1423                 }
1424         }
1425
1426         mwifiex_dbg(adapter, CMD, "cmd: calling mwifiex_shutdown_drv...\n");
1427         mwifiex_shutdown_drv(adapter);
1428         mwifiex_dbg(adapter, CMD, "cmd: mwifiex_shutdown_drv done\n");
1429
1430         if (atomic_read(&adapter->rx_pending) ||
1431             atomic_read(&adapter->tx_pending) ||
1432             atomic_read(&adapter->cmd_pending)) {
1433                 mwifiex_dbg(adapter, ERROR,
1434                             "rx_pending=%d, tx_pending=%d,\t"
1435                             "cmd_pending=%d\n",
1436                             atomic_read(&adapter->rx_pending),
1437                             atomic_read(&adapter->tx_pending),
1438                             atomic_read(&adapter->cmd_pending));
1439         }
1440
1441         for (i = 0; i < adapter->priv_num; i++) {
1442                 priv = adapter->priv[i];
1443                 if (!priv)
1444                         continue;
1445                 rtnl_lock();
1446                 if (priv->netdev &&
1447                     priv->wdev.iftype != NL80211_IFTYPE_UNSPECIFIED)
1448                         mwifiex_del_virtual_intf(adapter->wiphy, &priv->wdev);
1449                 rtnl_unlock();
1450         }
1451
1452         wiphy_unregister(adapter->wiphy);
1453         wiphy_free(adapter->wiphy);
1454         adapter->wiphy = NULL;
1455
1456         vfree(adapter->chan_stats);
1457         mwifiex_free_cmd_buffers(adapter);
1458 }
1459
1460 /*
1461  * This function gets called during PCIe function level reset.
1462  */
1463 int mwifiex_shutdown_sw(struct mwifiex_adapter *adapter)
1464 {
1465         struct mwifiex_private *priv;
1466
1467         if (!adapter)
1468                 return 0;
1469
1470         wait_for_completion(adapter->fw_done);
1471         /* Caller should ensure we aren't suspending while this happens */
1472         reinit_completion(adapter->fw_done);
1473
1474         priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
1475         mwifiex_deauthenticate(priv, NULL);
1476
1477         mwifiex_init_shutdown_fw(priv, MWIFIEX_FUNC_SHUTDOWN);
1478
1479         mwifiex_uninit_sw(adapter);
1480
1481         if (adapter->if_ops.down_dev)
1482                 adapter->if_ops.down_dev(adapter);
1483
1484         return 0;
1485 }
1486 EXPORT_SYMBOL_GPL(mwifiex_shutdown_sw);
1487
1488 /* This function gets called during PCIe function level reset. Required
1489  * code is extracted from mwifiex_add_card()
1490  */
1491 int
1492 mwifiex_reinit_sw(struct mwifiex_adapter *adapter)
1493 {
1494         int ret;
1495
1496         mwifiex_init_lock_list(adapter);
1497         if (adapter->if_ops.up_dev)
1498                 adapter->if_ops.up_dev(adapter);
1499
1500         adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING;
1501         clear_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags);
1502         init_waitqueue_head(&adapter->init_wait_q);
1503         clear_bit(MWIFIEX_IS_SUSPENDED, &adapter->work_flags);
1504         adapter->hs_activated = false;
1505         clear_bit(MWIFIEX_IS_CMD_TIMEDOUT, &adapter->work_flags);
1506         init_waitqueue_head(&adapter->hs_activate_wait_q);
1507         init_waitqueue_head(&adapter->cmd_wait_q.wait);
1508         adapter->cmd_wait_q.status = 0;
1509         adapter->scan_wait_q_woken = false;
1510
1511         if ((num_possible_cpus() > 1) || adapter->iface_type == MWIFIEX_USB)
1512                 adapter->rx_work_enabled = true;
1513
1514         adapter->workqueue =
1515                 alloc_workqueue("MWIFIEX_WORK_QUEUE",
1516                                 WQ_HIGHPRI | WQ_MEM_RECLAIM | WQ_UNBOUND, 1);
1517         if (!adapter->workqueue)
1518                 goto err_kmalloc;
1519
1520         INIT_WORK(&adapter->main_work, mwifiex_main_work_queue);
1521
1522         if (adapter->rx_work_enabled) {
1523                 adapter->rx_workqueue = alloc_workqueue("MWIFIEX_RX_WORK_QUEUE",
1524                                                         WQ_HIGHPRI |
1525                                                         WQ_MEM_RECLAIM |
1526                                                         WQ_UNBOUND, 1);
1527                 if (!adapter->rx_workqueue)
1528                         goto err_kmalloc;
1529                 INIT_WORK(&adapter->rx_work, mwifiex_rx_work_queue);
1530         }
1531
1532         /* Register the device. Fill up the private data structure with
1533          * relevant information from the card. Some code extracted from
1534          * mwifiex_register_dev()
1535          */
1536         mwifiex_dbg(adapter, INFO, "%s, mwifiex_init_hw_fw()...\n", __func__);
1537
1538         if (mwifiex_init_hw_fw(adapter, false)) {
1539                 mwifiex_dbg(adapter, ERROR,
1540                             "%s: firmware init failed\n", __func__);
1541                 goto err_init_fw;
1542         }
1543
1544         /* _mwifiex_fw_dpc() does its own cleanup */
1545         ret = _mwifiex_fw_dpc(adapter->firmware, adapter);
1546         if (ret) {
1547                 pr_err("Failed to bring up adapter: %d\n", ret);
1548                 return ret;
1549         }
1550         mwifiex_dbg(adapter, INFO, "%s, successful\n", __func__);
1551
1552         return 0;
1553
1554 err_init_fw:
1555         mwifiex_dbg(adapter, ERROR, "info: %s: unregister device\n", __func__);
1556         if (adapter->if_ops.unregister_dev)
1557                 adapter->if_ops.unregister_dev(adapter);
1558
1559 err_kmalloc:
1560         set_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags);
1561         mwifiex_terminate_workqueue(adapter);
1562         if (adapter->hw_status == MWIFIEX_HW_STATUS_READY) {
1563                 mwifiex_dbg(adapter, ERROR,
1564                             "info: %s: shutdown mwifiex\n", __func__);
1565                 mwifiex_shutdown_drv(adapter);
1566                 mwifiex_free_cmd_buffers(adapter);
1567         }
1568
1569         complete_all(adapter->fw_done);
1570         mwifiex_dbg(adapter, INFO, "%s, error\n", __func__);
1571
1572         return -1;
1573 }
1574 EXPORT_SYMBOL_GPL(mwifiex_reinit_sw);
1575
1576 static irqreturn_t mwifiex_irq_wakeup_handler(int irq, void *priv)
1577 {
1578         struct mwifiex_adapter *adapter = priv;
1579
1580         dev_dbg(adapter->dev, "%s: wake by wifi", __func__);
1581         adapter->wake_by_wifi = true;
1582         disable_irq_nosync(irq);
1583
1584         /* Notify PM core we are wakeup source */
1585         pm_wakeup_event(adapter->dev, 0);
1586         pm_system_wakeup();
1587
1588         return IRQ_HANDLED;
1589 }
1590
1591 static void mwifiex_probe_of(struct mwifiex_adapter *adapter)
1592 {
1593         int ret;
1594         struct device *dev = adapter->dev;
1595
1596         if (!dev->of_node)
1597                 goto err_exit;
1598
1599         adapter->dt_node = dev->of_node;
1600         adapter->irq_wakeup = irq_of_parse_and_map(adapter->dt_node, 0);
1601         if (!adapter->irq_wakeup) {
1602                 dev_dbg(dev, "fail to parse irq_wakeup from device tree\n");
1603                 goto err_exit;
1604         }
1605
1606         ret = devm_request_irq(dev, adapter->irq_wakeup,
1607                                mwifiex_irq_wakeup_handler, IRQF_TRIGGER_LOW,
1608                                "wifi_wake", adapter);
1609         if (ret) {
1610                 dev_err(dev, "Failed to request irq_wakeup %d (%d)\n",
1611                         adapter->irq_wakeup, ret);
1612                 goto err_exit;
1613         }
1614
1615         disable_irq(adapter->irq_wakeup);
1616         if (device_init_wakeup(dev, true)) {
1617                 dev_err(dev, "fail to init wakeup for mwifiex\n");
1618                 goto err_exit;
1619         }
1620         return;
1621
1622 err_exit:
1623         adapter->irq_wakeup = -1;
1624 }
1625
1626 /*
1627  * This function adds the card.
1628  *
1629  * This function follows the following major steps to set up the device -
1630  *      - Initialize software. This includes probing the card, registering
1631  *        the interface operations table, and allocating/initializing the
1632  *        adapter structure
1633  *      - Set up the netlink socket
1634  *      - Create and start the main work queue
1635  *      - Register the device
1636  *      - Initialize firmware and hardware
1637  *      - Add logical interfaces
1638  */
1639 int
1640 mwifiex_add_card(void *card, struct completion *fw_done,
1641                  struct mwifiex_if_ops *if_ops, u8 iface_type,
1642                  struct device *dev)
1643 {
1644         struct mwifiex_adapter *adapter;
1645
1646         if (mwifiex_register(card, dev, if_ops, (void **)&adapter)) {
1647                 pr_err("%s: software init failed\n", __func__);
1648                 goto err_init_sw;
1649         }
1650
1651         mwifiex_probe_of(adapter);
1652
1653         adapter->iface_type = iface_type;
1654         adapter->fw_done = fw_done;
1655
1656         adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING;
1657         clear_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags);
1658         init_waitqueue_head(&adapter->init_wait_q);
1659         clear_bit(MWIFIEX_IS_SUSPENDED, &adapter->work_flags);
1660         adapter->hs_activated = false;
1661         init_waitqueue_head(&adapter->hs_activate_wait_q);
1662         init_waitqueue_head(&adapter->cmd_wait_q.wait);
1663         adapter->cmd_wait_q.status = 0;
1664         adapter->scan_wait_q_woken = false;
1665
1666         if ((num_possible_cpus() > 1) || adapter->iface_type == MWIFIEX_USB)
1667                 adapter->rx_work_enabled = true;
1668
1669         adapter->workqueue =
1670                 alloc_workqueue("MWIFIEX_WORK_QUEUE",
1671                                 WQ_HIGHPRI | WQ_MEM_RECLAIM | WQ_UNBOUND, 1);
1672         if (!adapter->workqueue)
1673                 goto err_kmalloc;
1674
1675         INIT_WORK(&adapter->main_work, mwifiex_main_work_queue);
1676
1677         if (adapter->rx_work_enabled) {
1678                 adapter->rx_workqueue = alloc_workqueue("MWIFIEX_RX_WORK_QUEUE",
1679                                                         WQ_HIGHPRI |
1680                                                         WQ_MEM_RECLAIM |
1681                                                         WQ_UNBOUND, 1);
1682                 if (!adapter->rx_workqueue)
1683                         goto err_kmalloc;
1684
1685                 INIT_WORK(&adapter->rx_work, mwifiex_rx_work_queue);
1686         }
1687
1688         /* Register the device. Fill up the private data structure with relevant
1689            information from the card. */
1690         if (adapter->if_ops.register_dev(adapter)) {
1691                 pr_err("%s: failed to register mwifiex device\n", __func__);
1692                 goto err_registerdev;
1693         }
1694
1695         if (mwifiex_init_hw_fw(adapter, true)) {
1696                 pr_err("%s: firmware init failed\n", __func__);
1697                 goto err_init_fw;
1698         }
1699
1700         return 0;
1701
1702 err_init_fw:
1703         pr_debug("info: %s: unregister device\n", __func__);
1704         if (adapter->if_ops.unregister_dev)
1705                 adapter->if_ops.unregister_dev(adapter);
1706 err_registerdev:
1707         set_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags);
1708         mwifiex_terminate_workqueue(adapter);
1709         if (adapter->hw_status == MWIFIEX_HW_STATUS_READY) {
1710                 pr_debug("info: %s: shutdown mwifiex\n", __func__);
1711                 mwifiex_shutdown_drv(adapter);
1712                 mwifiex_free_cmd_buffers(adapter);
1713         }
1714 err_kmalloc:
1715         if (adapter->irq_wakeup >= 0)
1716                 device_init_wakeup(adapter->dev, false);
1717         mwifiex_free_adapter(adapter);
1718
1719 err_init_sw:
1720
1721         return -1;
1722 }
1723 EXPORT_SYMBOL_GPL(mwifiex_add_card);
1724
1725 /*
1726  * This function removes the card.
1727  *
1728  * This function follows the following major steps to remove the device -
1729  *      - Stop data traffic
1730  *      - Shutdown firmware
1731  *      - Remove the logical interfaces
1732  *      - Terminate the work queue
1733  *      - Unregister the device
1734  *      - Free the adapter structure
1735  */
1736 int mwifiex_remove_card(struct mwifiex_adapter *adapter)
1737 {
1738         if (!adapter)
1739                 return 0;
1740
1741         mwifiex_uninit_sw(adapter);
1742
1743         if (adapter->irq_wakeup >= 0)
1744                 device_init_wakeup(adapter->dev, false);
1745
1746         /* Unregister device */
1747         mwifiex_dbg(adapter, INFO,
1748                     "info: unregister device\n");
1749         if (adapter->if_ops.unregister_dev)
1750                 adapter->if_ops.unregister_dev(adapter);
1751         /* Free adapter structure */
1752         mwifiex_dbg(adapter, INFO,
1753                     "info: free adapter\n");
1754         mwifiex_free_adapter(adapter);
1755
1756         return 0;
1757 }
1758 EXPORT_SYMBOL_GPL(mwifiex_remove_card);
1759
1760 void _mwifiex_dbg(const struct mwifiex_adapter *adapter, int mask,
1761                   const char *fmt, ...)
1762 {
1763         struct va_format vaf;
1764         va_list args;
1765
1766         if (!(adapter->debug_mask & mask))
1767                 return;
1768
1769         va_start(args, fmt);
1770
1771         vaf.fmt = fmt;
1772         vaf.va = &args;
1773
1774         if (adapter->dev)
1775                 dev_info(adapter->dev, "%pV", &vaf);
1776         else
1777                 pr_info("%pV", &vaf);
1778
1779         va_end(args);
1780 }
1781 EXPORT_SYMBOL_GPL(_mwifiex_dbg);
1782
1783 /*
1784  * This function initializes the module.
1785  *
1786  * The debug FS is also initialized if configured.
1787  */
1788 static int
1789 mwifiex_init_module(void)
1790 {
1791 #ifdef CONFIG_DEBUG_FS
1792         mwifiex_debugfs_init();
1793 #endif
1794         return 0;
1795 }
1796
1797 /*
1798  * This function cleans up the module.
1799  *
1800  * The debug FS is removed if available.
1801  */
1802 static void
1803 mwifiex_cleanup_module(void)
1804 {
1805 #ifdef CONFIG_DEBUG_FS
1806         mwifiex_debugfs_remove();
1807 #endif
1808 }
1809
1810 module_init(mwifiex_init_module);
1811 module_exit(mwifiex_cleanup_module);
1812
1813 MODULE_AUTHOR("Marvell International Ltd.");
1814 MODULE_DESCRIPTION("Marvell WiFi-Ex Driver version " VERSION);
1815 MODULE_VERSION(VERSION);
1816 MODULE_LICENSE("GPL v2");