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