main.c

   1// SPDX-License-Identifier: GPL-2.0-only
   2/*
   3 * NXP Wireless LAN device driver: major functions
   4 *
   5 * Copyright 2011-2020 NXP
   6 */
   7
   8#include <linux/suspend.h>
   9#include <net/sock.h>
  10
  11#include "main.h"
  12#include "wmm.h"
  13#include "cfg80211.h"
  14#include "11n.h"
  15
  16#define VERSION	"1.0"
  17#define MFG_FIRMWARE	"mwifiex_mfg.bin"
  18
  19static unsigned int debug_mask = MWIFIEX_DEFAULT_DEBUG_MASK;
  20module_param(debug_mask, uint, 0);
  21MODULE_PARM_DESC(debug_mask, "bitmap for debug flags");
  22
  23const char driver_version[] = "mwifiex " VERSION " (%s) ";
  24static char *cal_data_cfg;
  25module_param(cal_data_cfg, charp, 0);
  26
  27static unsigned short driver_mode;
  28module_param(driver_mode, ushort, 0);
  29MODULE_PARM_DESC(driver_mode,
  30		 "station=0x1(default), ap-sta=0x3, station-p2p=0x5, ap-sta-p2p=0x7");
  31
  32bool mfg_mode;
  33module_param(mfg_mode, bool, 0);
  34MODULE_PARM_DESC(mfg_mode, "manufacturing mode enable:1, disable:0");
  35
  36bool aggr_ctrl;
  37module_param(aggr_ctrl, bool, 0000);
  38MODULE_PARM_DESC(aggr_ctrl, "usb tx aggregation enable:1, disable:0");
  39
  40const u16 mwifiex_1d_to_wmm_queue[8] = { 1, 0, 0, 1, 2, 2, 3, 3 };
  41
  42/*
  43 * This function registers the device and performs all the necessary
  44 * initializations.
  45 *
  46 * The following initialization operations are performed -
  47 *      - Allocate adapter structure
  48 *      - Save interface specific operations table in adapter
  49 *      - Call interface specific initialization routine
  50 *      - Allocate private structures
  51 *      - Set default adapter structure parameters
  52 *      - Initialize locks
  53 *
  54 * In case of any errors during inittialization, this function also ensures
  55 * proper cleanup before exiting.
  56 */
  57static int mwifiex_register(void *card, struct device *dev,
  58			    const struct mwifiex_if_ops *if_ops, void **padapter)
  59{
  60	struct mwifiex_adapter *adapter;
  61	int i;
  62
  63	adapter = kzalloc(sizeof(struct mwifiex_adapter), GFP_KERNEL);
  64	if (!adapter)
  65		return -ENOMEM;
  66
  67	*padapter = adapter;
  68	adapter->dev = dev;
  69	adapter->card = card;
  70
  71	/* Save interface specific operations in adapter */
  72	memmove(&adapter->if_ops, if_ops, sizeof(struct mwifiex_if_ops));
  73	adapter->debug_mask = debug_mask;
  74
  75	/* card specific initialization has been deferred until now .. */
  76	if (adapter->if_ops.init_if)
  77		if (adapter->if_ops.init_if(adapter))
  78			goto error;
  79
  80	adapter->priv_num = 0;
  81
  82	for (i = 0; i < MWIFIEX_MAX_BSS_NUM; i++) {
  83		/* Allocate memory for private structure */
  84		adapter->priv[i] =
  85			kzalloc(sizeof(struct mwifiex_private), GFP_KERNEL);
  86		if (!adapter->priv[i])
  87			goto error;
  88
  89		adapter->priv[i]->adapter = adapter;
  90		adapter->priv_num++;
  91	}
  92	mwifiex_init_lock_list(adapter);
  93
  94	timer_setup(&adapter->cmd_timer, mwifiex_cmd_timeout_func, 0);
  95
  96	return 0;
  97
  98error:
  99	mwifiex_dbg(adapter, ERROR,
 100		    "info: leave mwifiex_register with error\n");
 101
 102	for (i = 0; i < adapter->priv_num; i++)
 103		kfree(adapter->priv[i]);
 104
 105	kfree(adapter);
 106
 107	return -1;
 108}
 109
 110/*
 111 * This function unregisters the device and performs all the necessary
 112 * cleanups.
 113 *
 114 * The following cleanup operations are performed -
 115 *      - Free the timers
 116 *      - Free beacon buffers
 117 *      - Free private structures
 118 *      - Free adapter structure
 119 */
 120static int mwifiex_unregister(struct mwifiex_adapter *adapter)
 121{
 122	s32 i;
 123
 124	if (adapter->if_ops.cleanup_if)
 125		adapter->if_ops.cleanup_if(adapter);
 126
 127	timer_shutdown_sync(&adapter->cmd_timer);
 128
 129	/* Free private structures */
 130	for (i = 0; i < adapter->priv_num; i++) {
 131		mwifiex_free_curr_bcn(adapter->priv[i]);
 132		kfree(adapter->priv[i]);
 133	}
 134
 135	if (adapter->nd_info) {
 136		for (i = 0 ; i < adapter->nd_info->n_matches ; i++)
 137			kfree(adapter->nd_info->matches[i]);
 138		kfree(adapter->nd_info);
 139		adapter->nd_info = NULL;
 140	}
 141
 142	kfree(adapter->regd);
 143
 144	kfree(adapter);
 145	return 0;
 146}
 147
 148void mwifiex_queue_main_work(struct mwifiex_adapter *adapter)
 149{
 150	unsigned long flags;
 151
 152	spin_lock_irqsave(&adapter->main_proc_lock, flags);
 153	if (adapter->mwifiex_processing) {
 154		adapter->more_task_flag = true;
 155		spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
 156	} else {
 157		spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
 158		queue_work(adapter->workqueue, &adapter->main_work);
 159	}
 160}
 161EXPORT_SYMBOL_GPL(mwifiex_queue_main_work);
 162
 163static void mwifiex_queue_rx_work(struct mwifiex_adapter *adapter)
 164{
 165	spin_lock_bh(&adapter->rx_proc_lock);
 166	if (adapter->rx_processing) {
 167		spin_unlock_bh(&adapter->rx_proc_lock);
 168	} else {
 169		spin_unlock_bh(&adapter->rx_proc_lock);
 170		queue_work(adapter->rx_workqueue, &adapter->rx_work);
 171	}
 172}
 173
 174static int mwifiex_process_rx(struct mwifiex_adapter *adapter)
 175{
 176	struct sk_buff *skb;
 177	struct mwifiex_rxinfo *rx_info;
 178
 179	spin_lock_bh(&adapter->rx_proc_lock);
 180	if (adapter->rx_processing || adapter->rx_locked) {
 181		spin_unlock_bh(&adapter->rx_proc_lock);
 182		goto exit_rx_proc;
 183	} else {
 184		adapter->rx_processing = true;
 185		spin_unlock_bh(&adapter->rx_proc_lock);
 186	}
 187
 188	/* Check for Rx data */
 189	while ((skb = skb_dequeue(&adapter->rx_data_q))) {
 190		atomic_dec(&adapter->rx_pending);
 191		if ((adapter->delay_main_work ||
 192		     adapter->iface_type == MWIFIEX_USB) &&
 193		    (atomic_read(&adapter->rx_pending) < LOW_RX_PENDING)) {
 194			if (adapter->if_ops.submit_rem_rx_urbs)
 195				adapter->if_ops.submit_rem_rx_urbs(adapter);
 196			adapter->delay_main_work = false;
 197			mwifiex_queue_main_work(adapter);
 198		}
 199		rx_info = MWIFIEX_SKB_RXCB(skb);
 200		if (rx_info->buf_type == MWIFIEX_TYPE_AGGR_DATA) {
 201			if (adapter->if_ops.deaggr_pkt)
 202				adapter->if_ops.deaggr_pkt(adapter, skb);
 203			dev_kfree_skb_any(skb);
 204		} else {
 205			mwifiex_handle_rx_packet(adapter, skb);
 206		}
 207	}
 208	spin_lock_bh(&adapter->rx_proc_lock);
 209	adapter->rx_processing = false;
 210	spin_unlock_bh(&adapter->rx_proc_lock);
 211
 212exit_rx_proc:
 213	return 0;
 214}
 215
 216static void maybe_quirk_fw_disable_ds(struct mwifiex_adapter *adapter)
 217{
 218	struct mwifiex_private *priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA);
 219	struct mwifiex_ver_ext ver_ext;
 220
 221	if (test_and_set_bit(MWIFIEX_IS_REQUESTING_FW_VEREXT, &adapter->work_flags))
 222		return;
 223
 224	memset(&ver_ext, 0, sizeof(ver_ext));
 225	ver_ext.version_str_sel = 1;
 226	if (mwifiex_send_cmd(priv, HostCmd_CMD_VERSION_EXT,
 227			     HostCmd_ACT_GEN_GET, 0, &ver_ext, false)) {
 228		mwifiex_dbg(priv->adapter, MSG,
 229			    "Checking hardware revision failed.\n");
 230	}
 231}
 232
 233/*
 234 * The main process.
 235 *
 236 * This function is the main procedure of the driver and handles various driver
 237 * operations. It runs in a loop and provides the core functionalities.
 238 *
 239 * The main responsibilities of this function are -
 240 *      - Ensure concurrency control
 241 *      - Handle pending interrupts and call interrupt handlers
 242 *      - Wake up the card if required
 243 *      - Handle command responses and call response handlers
 244 *      - Handle events and call event handlers
 245 *      - Execute pending commands
 246 *      - Transmit pending data packets
 247 */
 248int mwifiex_main_process(struct mwifiex_adapter *adapter)
 249{
 250	int ret = 0;
 251	unsigned long flags;
 252
 253	spin_lock_irqsave(&adapter->main_proc_lock, flags);
 254
 255	/* Check if already processing */
 256	if (adapter->mwifiex_processing || adapter->main_locked) {
 257		adapter->more_task_flag = true;
 258		spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
 259		return 0;
 260	} else {
 261		adapter->mwifiex_processing = true;
 262		spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
 263	}
 264process_start:
 265	do {
 266		if (adapter->hw_status == MWIFIEX_HW_STATUS_NOT_READY)
 267			break;
 268
 269		/* For non-USB interfaces, If we process interrupts first, it
 270		 * would increase RX pending even further. Avoid this by
 271		 * checking if rx_pending has crossed high threshold and
 272		 * schedule rx work queue and then process interrupts.
 273		 * For USB interface, there are no interrupts. We already have
 274		 * HIGH_RX_PENDING check in usb.c
 275		 */
 276		if (atomic_read(&adapter->rx_pending) >= HIGH_RX_PENDING &&
 277		    adapter->iface_type != MWIFIEX_USB) {
 278			adapter->delay_main_work = true;
 279			mwifiex_queue_rx_work(adapter);
 280			break;
 281		}
 282
 283		/* Handle pending interrupt if any */
 284		if (adapter->int_status) {
 285			if (adapter->hs_activated)
 286				mwifiex_process_hs_config(adapter);
 287			if (adapter->if_ops.process_int_status)
 288				adapter->if_ops.process_int_status(adapter);
 289		}
 290
 291		if (adapter->rx_work_enabled && adapter->data_received)
 292			mwifiex_queue_rx_work(adapter);
 293
 294		/* Need to wake up the card ? */
 295		if ((adapter->ps_state == PS_STATE_SLEEP) &&
 296		    (adapter->pm_wakeup_card_req &&
 297		     !adapter->pm_wakeup_fw_try) &&
 298		    (is_command_pending(adapter) ||
 299		     !skb_queue_empty(&adapter->tx_data_q) ||
 300		     !mwifiex_bypass_txlist_empty(adapter) ||
 301		     !mwifiex_wmm_lists_empty(adapter))) {
 302			adapter->pm_wakeup_fw_try = true;
 303			mod_timer(&adapter->wakeup_timer, jiffies + (HZ*3));
 304			adapter->if_ops.wakeup(adapter);
 305			continue;
 306		}
 307
 308		if (IS_CARD_RX_RCVD(adapter)) {
 309			adapter->data_received = false;
 310			adapter->pm_wakeup_fw_try = false;
 311			timer_delete(&adapter->wakeup_timer);
 312			if (adapter->ps_state == PS_STATE_SLEEP)
 313				adapter->ps_state = PS_STATE_AWAKE;
 314		} else {
 315			/* We have tried to wakeup the card already */
 316			if (adapter->pm_wakeup_fw_try)
 317				break;
 318			if (adapter->ps_state == PS_STATE_PRE_SLEEP)
 319				mwifiex_check_ps_cond(adapter);
 320
 321			if (adapter->ps_state != PS_STATE_AWAKE)
 322				break;
 323			if (adapter->tx_lock_flag) {
 324				if (adapter->iface_type == MWIFIEX_USB) {
 325					if (!adapter->usb_mc_setup)
 326						break;
 327				} else
 328					break;
 329			}
 330
 331			if ((!adapter->scan_chan_gap_enabled &&
 332			     adapter->scan_processing) || adapter->data_sent ||
 333			     mwifiex_is_tdls_chan_switching
 334			     (mwifiex_get_priv(adapter,
 335					       MWIFIEX_BSS_ROLE_STA)) ||
 336			    (mwifiex_wmm_lists_empty(adapter) &&
 337			     mwifiex_bypass_txlist_empty(adapter) &&
 338			     skb_queue_empty(&adapter->tx_data_q))) {
 339				if (adapter->cmd_sent || adapter->curr_cmd ||
 340					!mwifiex_is_send_cmd_allowed
 341						(mwifiex_get_priv(adapter,
 342						MWIFIEX_BSS_ROLE_STA)) ||
 343				    (!is_command_pending(adapter)))
 344					break;
 345			}
 346		}
 347
 348		/* Check for event */
 349		if (adapter->event_received) {
 350			adapter->event_received = false;
 351			mwifiex_process_event(adapter);
 352		}
 353
 354		/* Check for Cmd Resp */
 355		if (adapter->cmd_resp_received) {
 356			adapter->cmd_resp_received = false;
 357			mwifiex_process_cmdresp(adapter);
 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			if (adapter->hs_activated_manually) {
 403				mwifiex_cancel_hs(mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY),
 404						  MWIFIEX_ASYNC_CMD);
 405				adapter->hs_activated_manually = false;
 406			}
 407
 408			mwifiex_process_tx_queue(adapter);
 409			if (adapter->hs_activated) {
 410				clear_bit(MWIFIEX_IS_HS_CONFIGURED,
 411					  &adapter->work_flags);
 412				mwifiex_hs_activated_event(adapter, 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			if (adapter->hs_activated_manually) {
 423				mwifiex_cancel_hs(mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY),
 424						  MWIFIEX_ASYNC_CMD);
 425				adapter->hs_activated_manually = false;
 426			}
 427
 428			mwifiex_process_bypass_tx(adapter);
 429			if (adapter->hs_activated) {
 430				clear_bit(MWIFIEX_IS_HS_CONFIGURED,
 431					  &adapter->work_flags);
 432				mwifiex_hs_activated_event(adapter, false);
 433			}
 434		}
 435
 436		if ((adapter->scan_chan_gap_enabled ||
 437		     !adapter->scan_processing) &&
 438		    !adapter->data_sent && !mwifiex_wmm_lists_empty(adapter) &&
 439		    !mwifiex_is_tdls_chan_switching
 440			(mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA))) {
 441			if (adapter->hs_activated_manually) {
 442				mwifiex_cancel_hs(mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY),
 443						  MWIFIEX_ASYNC_CMD);
 444				adapter->hs_activated_manually = false;
 445			}
 446
 447			mwifiex_wmm_process_tx(adapter);
 448			if (adapter->hs_activated) {
 449				clear_bit(MWIFIEX_IS_HS_CONFIGURED,
 450					  &adapter->work_flags);
 451				mwifiex_hs_activated_event(adapter, false);
 452			}
 453		}
 454
 455		if (adapter->delay_null_pkt && !adapter->cmd_sent &&
 456		    !adapter->curr_cmd && !is_command_pending(adapter) &&
 457		    (mwifiex_wmm_lists_empty(adapter) &&
 458		     mwifiex_bypass_txlist_empty(adapter) &&
 459		     skb_queue_empty(&adapter->tx_data_q))) {
 460			if (!mwifiex_send_null_packet
 461			    (mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA),
 462			     MWIFIEX_TxPD_POWER_MGMT_NULL_PACKET |
 463			     MWIFIEX_TxPD_POWER_MGMT_LAST_PACKET)) {
 464				adapter->delay_null_pkt = false;
 465				adapter->ps_state = PS_STATE_SLEEP;
 466			}
 467			break;
 468		}
 469	} while (true);
 470
 471	spin_lock_irqsave(&adapter->main_proc_lock, flags);
 472	if (adapter->more_task_flag) {
 473		adapter->more_task_flag = false;
 474		spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
 475		goto process_start;
 476	}
 477	adapter->mwifiex_processing = false;
 478	spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
 479
 480	return ret;
 481}
 482EXPORT_SYMBOL_GPL(mwifiex_main_process);
 483
 484/*
 485 * This function frees the adapter structure.
 486 *
 487 * Additionally, this closes the netlink socket, frees the timers
 488 * and private structures.
 489 */
 490static void mwifiex_free_adapter(struct mwifiex_adapter *adapter)
 491{
 492	if (!adapter) {
 493		pr_err("%s: adapter is NULL\n", __func__);
 494		return;
 495	}
 496
 497	if (adapter->rgpower_data) {
 498		release_firmware(adapter->rgpower_data);
 499		adapter->rgpower_data = NULL;
 500	}
 501
 502	mwifiex_unregister(adapter);
 503	pr_debug("info: %s: free adapter\n", __func__);
 504}
 505
 506/*
 507 * This function cancels all works in the queue and destroys
 508 * the main workqueue.
 509 */
 510static void mwifiex_terminate_workqueue(struct mwifiex_adapter *adapter)
 511{
 512	if (adapter->workqueue) {
 513		destroy_workqueue(adapter->workqueue);
 514		adapter->workqueue = NULL;
 515	}
 516
 517	if (adapter->rx_workqueue) {
 518		destroy_workqueue(adapter->rx_workqueue);
 519		adapter->rx_workqueue = NULL;
 520	}
 521
 522	if (adapter->host_mlme_workqueue) {
 523		destroy_workqueue(adapter->host_mlme_workqueue);
 524		adapter->host_mlme_workqueue = NULL;
 525	}
 526}
 527
 528/*
 529 * This function gets firmware and initializes it.
 530 *
 531 * The main initialization steps followed are -
 532 *      - Download the correct firmware to card
 533 *      - Issue the init commands to firmware
 534 */
 535static int _mwifiex_fw_dpc(const struct firmware *firmware, void *context)
 536{
 537	int ret;
 538	char fmt[64];
 539	struct mwifiex_adapter *adapter = context;
 540	struct mwifiex_fw_image fw;
 541	bool init_failed = false;
 542	struct wireless_dev *wdev;
 543	struct completion *fw_done = adapter->fw_done;
 544
 545	if (!firmware) {
 546		mwifiex_dbg(adapter, ERROR,
 547			    "Failed to get firmware %s\n", adapter->fw_name);
 548		goto err_dnld_fw;
 549	}
 550
 551	memset(&fw, 0, sizeof(struct mwifiex_fw_image));
 552	adapter->firmware = firmware;
 553	fw.fw_buf = (u8 *) adapter->firmware->data;
 554	fw.fw_len = adapter->firmware->size;
 555
 556	if (adapter->if_ops.dnld_fw) {
 557		ret = adapter->if_ops.dnld_fw(adapter, &fw);
 558	} else {
 559		ret = mwifiex_dnld_fw(adapter, &fw);
 560	}
 561
 562	if (ret == -1)
 563		goto err_dnld_fw;
 564
 565	mwifiex_dbg(adapter, MSG, "WLAN FW is active\n");
 566
 567	if (cal_data_cfg) {
 568		if ((request_firmware(&adapter->cal_data, cal_data_cfg,
 569				      adapter->dev)) < 0)
 570			mwifiex_dbg(adapter, ERROR,
 571				    "Cal data request_firmware() failed\n");
 572	}
 573
 574	/* enable host interrupt after fw dnld is successful */
 575	if (adapter->if_ops.enable_int) {
 576		if (adapter->if_ops.enable_int(adapter))
 577			goto err_dnld_fw;
 578	}
 579
 580	ret = mwifiex_init_fw(adapter);
 581	if (ret == -1)
 582		goto err_init_fw;
 583
 584	maybe_quirk_fw_disable_ds(adapter);
 585
 586	if (!adapter->wiphy) {
 587		if (mwifiex_register_cfg80211(adapter)) {
 588			mwifiex_dbg(adapter, ERROR,
 589				    "cannot register with cfg80211\n");
 590			goto err_init_fw;
 591		}
 592	}
 593
 594	if (mwifiex_init_channel_scan_gap(adapter)) {
 595		mwifiex_dbg(adapter, ERROR,
 596			    "could not init channel stats table\n");
 597		goto err_init_chan_scan;
 598	}
 599
 600	if (driver_mode) {
 601		driver_mode &= MWIFIEX_DRIVER_MODE_BITMASK;
 602		driver_mode |= MWIFIEX_DRIVER_MODE_STA;
 603	}
 604
 605	rtnl_lock();
 606	wiphy_lock(adapter->wiphy);
 607	/* Create station interface by default */
 608	wdev = mwifiex_add_virtual_intf(adapter->wiphy, "mlan%d", NET_NAME_ENUM,
 609					NL80211_IFTYPE_STATION, NULL);
 610	if (IS_ERR(wdev)) {
 611		mwifiex_dbg(adapter, ERROR,
 612			    "cannot create default STA interface\n");
 613		wiphy_unlock(adapter->wiphy);
 614		rtnl_unlock();
 615		goto err_add_intf;
 616	}
 617
 618	if (driver_mode & MWIFIEX_DRIVER_MODE_UAP) {
 619		wdev = mwifiex_add_virtual_intf(adapter->wiphy, "uap%d", NET_NAME_ENUM,
 620						NL80211_IFTYPE_AP, NULL);
 621		if (IS_ERR(wdev)) {
 622			mwifiex_dbg(adapter, ERROR,
 623				    "cannot create AP interface\n");
 624			wiphy_unlock(adapter->wiphy);
 625			rtnl_unlock();
 626			goto err_add_intf;
 627		}
 628	}
 629
 630	if (driver_mode & MWIFIEX_DRIVER_MODE_P2P) {
 631		wdev = mwifiex_add_virtual_intf(adapter->wiphy, "p2p%d", NET_NAME_ENUM,
 632						NL80211_IFTYPE_P2P_CLIENT, NULL);
 633		if (IS_ERR(wdev)) {
 634			mwifiex_dbg(adapter, ERROR,
 635				    "cannot create p2p client interface\n");
 636			wiphy_unlock(adapter->wiphy);
 637			rtnl_unlock();
 638			goto err_add_intf;
 639		}
 640	}
 641	wiphy_unlock(adapter->wiphy);
 642	rtnl_unlock();
 643
 644	mwifiex_drv_get_driver_version(adapter, fmt, sizeof(fmt) - 1);
 645	mwifiex_dbg(adapter, MSG, "driver_version = %s\n", fmt);
 646	adapter->is_up = true;
 647	goto done;
 648
 649err_add_intf:
 650	kfree(adapter->chan_stats);
 651err_init_chan_scan:
 652	wiphy_unregister(adapter->wiphy);
 653	wiphy_free(adapter->wiphy);
 654err_init_fw:
 655	if (adapter->if_ops.disable_int)
 656		adapter->if_ops.disable_int(adapter);
 657err_dnld_fw:
 658	mwifiex_dbg(adapter, ERROR,
 659		    "info: %s: unregister device\n", __func__);
 660	if (adapter->if_ops.unregister_dev)
 661		adapter->if_ops.unregister_dev(adapter);
 662
 663	set_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags);
 664	mwifiex_terminate_workqueue(adapter);
 665
 666	if (adapter->hw_status == MWIFIEX_HW_STATUS_READY) {
 667		pr_debug("info: %s: shutdown mwifiex\n", __func__);
 668		mwifiex_shutdown_drv(adapter);
 669		mwifiex_free_cmd_buffers(adapter);
 670	}
 671
 672	init_failed = true;
 673done:
 674	if (adapter->firmware) {
 675		release_firmware(adapter->firmware);
 676		adapter->firmware = NULL;
 677	}
 678	if (init_failed) {
 679		if (adapter->irq_wakeup >= 0)
 680			device_init_wakeup(adapter->dev, false);
 681		mwifiex_free_adapter(adapter);
 682	}
 683	/* Tell all current and future waiters we're finished */
 684	complete_all(fw_done);
 685
 686	return init_failed ? -EIO : 0;
 687}
 688
 689static void mwifiex_fw_dpc(const struct firmware *firmware, void *context)
 690{
 691	_mwifiex_fw_dpc(firmware, context);
 692}
 693
 694/*
 695 * This function gets the firmware and (if called asynchronously) kicks off the
 696 * HW init when done.
 697 */
 698static int mwifiex_init_hw_fw(struct mwifiex_adapter *adapter,
 699			      bool req_fw_nowait)
 700{
 701	int ret;
 702
 703	/* Override default firmware with manufacturing one if
 704	 * manufacturing mode is enabled
 705	 */
 706	if (mfg_mode)
 707		strscpy(adapter->fw_name, MFG_FIRMWARE,
 708			sizeof(adapter->fw_name));
 709
 710	if (req_fw_nowait) {
 711		ret = request_firmware_nowait(THIS_MODULE, 1, adapter->fw_name,
 712					      adapter->dev, GFP_KERNEL, adapter,
 713					      mwifiex_fw_dpc);
 714	} else {
 715		ret = request_firmware(&adapter->firmware,
 716				       adapter->fw_name,
 717				       adapter->dev);
 718	}
 719
 720	if (ret < 0)
 721		mwifiex_dbg(adapter, ERROR, "request_firmware%s error %d\n",
 722			    req_fw_nowait ? "_nowait" : "", ret);
 723	return ret;
 724}
 725
 726/*
 727 * CFG802.11 network device handler for open.
 728 *
 729 * Starts the data queue.
 730 */
 731static int
 732mwifiex_open(struct net_device *dev)
 733{
 734	netif_carrier_off(dev);
 735
 736	return 0;
 737}
 738
 739/*
 740 * CFG802.11 network device handler for close.
 741 */
 742static int
 743mwifiex_close(struct net_device *dev)
 744{
 745	struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 746
 747	if (priv->scan_request) {
 748		struct cfg80211_scan_info info = {
 749			.aborted = true,
 750		};
 751
 752		mwifiex_dbg(priv->adapter, INFO,
 753			    "aborting scan on ndo_stop\n");
 754		cfg80211_scan_done(priv->scan_request, &info);
 755		priv->scan_request = NULL;
 756		priv->scan_aborting = true;
 757	}
 758
 759	if (priv->sched_scanning) {
 760		mwifiex_dbg(priv->adapter, INFO,
 761			    "aborting bgscan on ndo_stop\n");
 762		mwifiex_stop_bg_scan(priv);
 763		cfg80211_sched_scan_stopped(priv->wdev.wiphy, 0);
 764	}
 765
 766	return 0;
 767}
 768
 769static bool
 770mwifiex_bypass_tx_queue(struct mwifiex_private *priv,
 771			struct sk_buff *skb)
 772{
 773	struct ethhdr *eth_hdr = (struct ethhdr *)skb->data;
 774
 775	if (ntohs(eth_hdr->h_proto) == ETH_P_PAE ||
 776	    mwifiex_is_skb_mgmt_frame(skb) ||
 777	    (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA &&
 778	     ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info) &&
 779	     (ntohs(eth_hdr->h_proto) == ETH_P_TDLS))) {
 780		mwifiex_dbg(priv->adapter, DATA,
 781			    "bypass txqueue; eth type %#x, mgmt %d\n",
 782			     ntohs(eth_hdr->h_proto),
 783			     mwifiex_is_skb_mgmt_frame(skb));
 784		if (eth_hdr->h_proto == htons(ETH_P_PAE))
 785			mwifiex_dbg(priv->adapter, MSG,
 786				    "key: send EAPOL to %pM\n",
 787				    eth_hdr->h_dest);
 788		return true;
 789	}
 790
 791	return false;
 792}
 793/*
 794 * Add buffer into wmm tx queue and queue work to transmit it.
 795 */
 796int mwifiex_queue_tx_pkt(struct mwifiex_private *priv, struct sk_buff *skb)
 797{
 798	struct netdev_queue *txq;
 799	int index = mwifiex_1d_to_wmm_queue[skb->priority];
 800
 801	if (atomic_inc_return(&priv->wmm_tx_pending[index]) >= MAX_TX_PENDING) {
 802		txq = netdev_get_tx_queue(priv->netdev, index);
 803		if (!netif_tx_queue_stopped(txq)) {
 804			netif_tx_stop_queue(txq);
 805			mwifiex_dbg(priv->adapter, DATA,
 806				    "stop queue: %d\n", index);
 807		}
 808	}
 809
 810	if (mwifiex_bypass_tx_queue(priv, skb)) {
 811		atomic_inc(&priv->adapter->tx_pending);
 812		atomic_inc(&priv->adapter->bypass_tx_pending);
 813		mwifiex_wmm_add_buf_bypass_txqueue(priv, skb);
 814	 } else {
 815		atomic_inc(&priv->adapter->tx_pending);
 816		mwifiex_wmm_add_buf_txqueue(priv, skb);
 817	 }
 818
 819	mwifiex_queue_main_work(priv->adapter);
 820
 821	return 0;
 822}
 823
 824struct sk_buff *
 825mwifiex_clone_skb_for_tx_status(struct mwifiex_private *priv,
 826				struct sk_buff *skb, u8 flag, u64 *cookie)
 827{
 828	struct sk_buff *orig_skb = skb;
 829	struct mwifiex_txinfo *tx_info, *orig_tx_info;
 830
 831	skb = skb_clone(skb, GFP_ATOMIC);
 832	if (skb) {
 833		int id;
 834
 835		spin_lock_bh(&priv->ack_status_lock);
 836		id = idr_alloc(&priv->ack_status_frames, orig_skb,
 837			       1, 0x10, GFP_ATOMIC);
 838		spin_unlock_bh(&priv->ack_status_lock);
 839
 840		if (id >= 0) {
 841			tx_info = MWIFIEX_SKB_TXCB(skb);
 842			tx_info->ack_frame_id = id;
 843			tx_info->flags |= flag;
 844			orig_tx_info = MWIFIEX_SKB_TXCB(orig_skb);
 845			orig_tx_info->ack_frame_id = id;
 846			orig_tx_info->flags |= flag;
 847
 848			if (flag == MWIFIEX_BUF_FLAG_ACTION_TX_STATUS && cookie)
 849				orig_tx_info->cookie = *cookie;
 850
 851		} else if (skb_shared(skb)) {
 852			kfree_skb(orig_skb);
 853		} else {
 854			kfree_skb(skb);
 855			skb = orig_skb;
 856		}
 857	} else {
 858		/* couldn't clone -- lose tx status ... */
 859		skb = orig_skb;
 860	}
 861
 862	return skb;
 863}
 864
 865/*
 866 * CFG802.11 network device handler for data transmission.
 867 */
 868static netdev_tx_t
 869mwifiex_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
 870{
 871	struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 872	struct sk_buff *new_skb;
 873	struct mwifiex_txinfo *tx_info;
 874	bool multicast;
 875
 876	mwifiex_dbg(priv->adapter, DATA,
 877		    "data: %lu BSS(%d-%d): Data <= kernel\n",
 878		    jiffies, priv->bss_type, priv->bss_num);
 879
 880	if (test_bit(MWIFIEX_SURPRISE_REMOVED, &priv->adapter->work_flags)) {
 881		kfree_skb(skb);
 882		priv->stats.tx_dropped++;
 883		return 0;
 884	}
 885	if (!skb->len || (skb->len > ETH_FRAME_LEN)) {
 886		mwifiex_dbg(priv->adapter, ERROR,
 887			    "Tx: bad skb len %d\n", skb->len);
 888		kfree_skb(skb);
 889		priv->stats.tx_dropped++;
 890		return 0;
 891	}
 892	if (skb_headroom(skb) < MWIFIEX_MIN_DATA_HEADER_LEN) {
 893		mwifiex_dbg(priv->adapter, DATA,
 894			    "data: Tx: insufficient skb headroom %d\n",
 895			    skb_headroom(skb));
 896		/* Insufficient skb headroom - allocate a new skb */
 897		new_skb =
 898			skb_realloc_headroom(skb, MWIFIEX_MIN_DATA_HEADER_LEN);
 899		if (unlikely(!new_skb)) {
 900			mwifiex_dbg(priv->adapter, ERROR,
 901				    "Tx: cannot alloca new_skb\n");
 902			kfree_skb(skb);
 903			priv->stats.tx_dropped++;
 904			return 0;
 905		}
 906		kfree_skb(skb);
 907		skb = new_skb;
 908		mwifiex_dbg(priv->adapter, INFO,
 909			    "info: new skb headroomd %d\n",
 910			    skb_headroom(skb));
 911	}
 912
 913	tx_info = MWIFIEX_SKB_TXCB(skb);
 914	memset(tx_info, 0, sizeof(*tx_info));
 915	tx_info->bss_num = priv->bss_num;
 916	tx_info->bss_type = priv->bss_type;
 917	tx_info->pkt_len = skb->len;
 918
 919	multicast = is_multicast_ether_addr(skb->data);
 920
 921	if (unlikely(!multicast && sk_requests_wifi_status(skb->sk) &&
 922		     priv->adapter->fw_api_ver == MWIFIEX_FW_V15))
 923		skb = mwifiex_clone_skb_for_tx_status(priv,
 924						      skb,
 925					MWIFIEX_BUF_FLAG_EAPOL_TX_STATUS, NULL);
 926
 927	/* Record the current time the packet was queued; used to
 928	 * determine the amount of time the packet was queued in
 929	 * the driver before it was sent to the firmware.
 930	 * The delay is then sent along with the packet to the
 931	 * firmware for aggregate delay calculation for stats and
 932	 * MSDU lifetime expiry.
 933	 */
 934	__net_timestamp(skb);
 935
 936	if (ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info) &&
 937	    priv->bss_type == MWIFIEX_BSS_TYPE_STA &&
 938	    !ether_addr_equal_unaligned(priv->cfg_bssid, skb->data)) {
 939		if (priv->adapter->auto_tdls && priv->check_tdls_tx)
 940			mwifiex_tdls_check_tx(priv, skb);
 941	}
 942
 943	mwifiex_queue_tx_pkt(priv, skb);
 944
 945	return 0;
 946}
 947
 948int mwifiex_set_mac_address(struct mwifiex_private *priv,
 949			    struct net_device *dev, bool external,
 950			    u8 *new_mac)
 951{
 952	int ret;
 953	u64 mac_addr, old_mac_addr;
 954
 955	old_mac_addr = ether_addr_to_u64(priv->curr_addr);
 956
 957	if (external) {
 958		mac_addr = ether_addr_to_u64(new_mac);
 959	} else {
 960		/* Internal mac address change */
 961		if (priv->bss_type == MWIFIEX_BSS_TYPE_ANY)
 962			return -EOPNOTSUPP;
 963
 964		mac_addr = old_mac_addr;
 965
 966		if (priv->bss_type == MWIFIEX_BSS_TYPE_P2P) {
 967			mac_addr |= BIT_ULL(MWIFIEX_MAC_LOCAL_ADMIN_BIT);
 968			mac_addr += priv->bss_num;
 969		} else if (priv->adapter->priv[0] != priv) {
 970			/* Set mac address based on bss_type/bss_num */
 971			mac_addr ^= BIT_ULL(priv->bss_type + 8);
 972			mac_addr += priv->bss_num;
 973		}
 974	}
 975
 976	u64_to_ether_addr(mac_addr, priv->curr_addr);
 977
 978	/* Send request to firmware */
 979	ret = mwifiex_send_cmd(priv, HostCmd_CMD_802_11_MAC_ADDRESS,
 980			       HostCmd_ACT_GEN_SET, 0, NULL, true);
 981
 982	if (ret) {
 983		u64_to_ether_addr(old_mac_addr, priv->curr_addr);
 984		mwifiex_dbg(priv->adapter, ERROR,
 985			    "set mac address failed: ret=%d\n", ret);
 986		return ret;
 987	}
 988
 989	eth_hw_addr_set(dev, priv->curr_addr);
 990	return 0;
 991}
 992
 993/* CFG802.11 network device handler for setting MAC address.
 994 */
 995static int
 996mwifiex_ndo_set_mac_address(struct net_device *dev, void *addr)
 997{
 998	struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 999	struct sockaddr *hw_addr = addr;
1000
1001	return mwifiex_set_mac_address(priv, dev, true, hw_addr->sa_data);
1002}
1003
1004/*
1005 * CFG802.11 network device handler for setting multicast list.
1006 */
1007static void mwifiex_set_multicast_list(struct net_device *dev)
1008{
1009	struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1010	struct mwifiex_multicast_list mcast_list;
1011
1012	if (dev->flags & IFF_PROMISC) {
1013		mcast_list.mode = MWIFIEX_PROMISC_MODE;
1014	} else if (dev->flags & IFF_ALLMULTI ||
1015		   netdev_mc_count(dev) > MWIFIEX_MAX_MULTICAST_LIST_SIZE) {
1016		mcast_list.mode = MWIFIEX_ALL_MULTI_MODE;
1017	} else {
1018		mcast_list.mode = MWIFIEX_MULTICAST_MODE;
1019		mcast_list.num_multicast_addr =
1020			mwifiex_copy_mcast_addr(&mcast_list, dev);
1021	}
1022	mwifiex_request_set_multicast_list(priv, &mcast_list);
1023}
1024
1025/*
1026 * CFG802.11 network device handler for transmission timeout.
1027 */
1028static void
1029mwifiex_tx_timeout(struct net_device *dev, unsigned int txqueue)
1030{
1031	struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1032
1033	priv->num_tx_timeout++;
1034	priv->tx_timeout_cnt++;
1035	mwifiex_dbg(priv->adapter, ERROR,
1036		    "%lu : Tx timeout(#%d), bss_type-num = %d-%d\n",
1037		    jiffies, priv->tx_timeout_cnt, priv->bss_type,
1038		    priv->bss_num);
1039	mwifiex_set_trans_start(dev);
1040
1041	if (priv->tx_timeout_cnt > TX_TIMEOUT_THRESHOLD &&
1042	    priv->adapter->if_ops.card_reset) {
1043		mwifiex_dbg(priv->adapter, ERROR,
1044			    "tx_timeout_cnt exceeds threshold.\t"
1045			    "Triggering card reset!\n");
1046		priv->adapter->if_ops.card_reset(priv->adapter);
1047	}
1048}
1049
1050void mwifiex_multi_chan_resync(struct mwifiex_adapter *adapter)
1051{
1052	struct usb_card_rec *card = adapter->card;
1053	struct mwifiex_private *priv;
1054	u16 tx_buf_size;
1055	int i, ret;
1056
1057	card->mc_resync_flag = true;
1058	for (i = 0; i < MWIFIEX_TX_DATA_PORT; i++) {
1059		if (atomic_read(&card->port[i].tx_data_urb_pending)) {
1060			mwifiex_dbg(adapter, WARN, "pending data urb in sys\n");
1061			return;
1062		}
1063	}
1064
1065	card->mc_resync_flag = false;
1066	tx_buf_size = 0xffff;
1067	priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
1068	ret = mwifiex_send_cmd(priv, HostCmd_CMD_RECONFIGURE_TX_BUFF,
1069			       HostCmd_ACT_GEN_SET, 0, &tx_buf_size, false);
1070	if (ret)
1071		mwifiex_dbg(adapter, ERROR,
1072			    "send reconfig tx buf size cmd err\n");
1073}
1074EXPORT_SYMBOL_GPL(mwifiex_multi_chan_resync);
1075
1076void mwifiex_upload_device_dump(struct mwifiex_adapter *adapter)
1077{
1078	/* Dump all the memory data into single file, a userspace script will
1079	 * be used to split all the memory data to multiple files
1080	 */
1081	mwifiex_dbg(adapter, MSG,
1082		    "== mwifiex dump information to /sys/class/devcoredump start\n");
1083	dev_coredumpv(adapter->dev, adapter->devdump_data, adapter->devdump_len,
1084		      GFP_KERNEL);
1085	mwifiex_dbg(adapter, MSG,
1086		    "== mwifiex dump information to /sys/class/devcoredump end\n");
1087
1088	/* Device dump data will be freed in device coredump release function
1089	 * after 5 min. Here reset adapter->devdump_data and ->devdump_len
1090	 * to avoid it been accidentally reused.
1091	 */
1092	adapter->devdump_data = NULL;
1093	adapter->devdump_len = 0;
1094}
1095EXPORT_SYMBOL_GPL(mwifiex_upload_device_dump);
1096
1097void mwifiex_drv_info_dump(struct mwifiex_adapter *adapter)
1098{
1099	char *p;
1100	char drv_version[64];
1101	struct usb_card_rec *cardp;
1102	struct sdio_mmc_card *sdio_card;
1103	struct mwifiex_private *priv;
1104	int i, idx;
1105	struct netdev_queue *txq;
1106	struct mwifiex_debug_info *debug_info;
1107
1108	mwifiex_dbg(adapter, MSG, "===mwifiex driverinfo dump start===\n");
1109
1110	p = adapter->devdump_data;
1111	strcpy(p, "========Start dump driverinfo========\n");
1112	p += strlen("========Start dump driverinfo========\n");
1113	p += sprintf(p, "driver_name = " "\"mwifiex\"\n");
1114
1115	mwifiex_drv_get_driver_version(adapter, drv_version,
1116				       sizeof(drv_version) - 1);
1117	p += sprintf(p, "driver_version = %s\n", drv_version);
1118
1119	if (adapter->iface_type == MWIFIEX_USB) {
1120		cardp = (struct usb_card_rec *)adapter->card;
1121		p += sprintf(p, "tx_cmd_urb_pending = %d\n",
1122			     atomic_read(&cardp->tx_cmd_urb_pending));
1123		p += sprintf(p, "tx_data_urb_pending_port_0 = %d\n",
1124			     atomic_read(&cardp->port[0].tx_data_urb_pending));
1125		p += sprintf(p, "tx_data_urb_pending_port_1 = %d\n",
1126			     atomic_read(&cardp->port[1].tx_data_urb_pending));
1127		p += sprintf(p, "rx_cmd_urb_pending = %d\n",
1128			     atomic_read(&cardp->rx_cmd_urb_pending));
1129		p += sprintf(p, "rx_data_urb_pending = %d\n",
1130			     atomic_read(&cardp->rx_data_urb_pending));
1131	}
1132
1133	p += sprintf(p, "tx_pending = %d\n",
1134		     atomic_read(&adapter->tx_pending));
1135	p += sprintf(p, "rx_pending = %d\n",
1136		     atomic_read(&adapter->rx_pending));
1137
1138	if (adapter->iface_type == MWIFIEX_SDIO) {
1139		sdio_card = (struct sdio_mmc_card *)adapter->card;
1140		p += sprintf(p, "\nmp_rd_bitmap=0x%x curr_rd_port=0x%x\n",
1141			     sdio_card->mp_rd_bitmap, sdio_card->curr_rd_port);
1142		p += sprintf(p, "mp_wr_bitmap=0x%x curr_wr_port=0x%x\n",
1143			     sdio_card->mp_wr_bitmap, sdio_card->curr_wr_port);
1144	}
1145
1146	for (i = 0; i < adapter->priv_num; i++) {
1147		if (!adapter->priv[i]->netdev)
1148			continue;
1149		priv = adapter->priv[i];
1150		p += sprintf(p, "\n[interface  : \"%s\"]\n",
1151			     priv->netdev->name);
1152		p += sprintf(p, "wmm_tx_pending[0] = %d\n",
1153			     atomic_read(&priv->wmm_tx_pending[0]));
1154		p += sprintf(p, "wmm_tx_pending[1] = %d\n",
1155			     atomic_read(&priv->wmm_tx_pending[1]));
1156		p += sprintf(p, "wmm_tx_pending[2] = %d\n",
1157			     atomic_read(&priv->wmm_tx_pending[2]));
1158		p += sprintf(p, "wmm_tx_pending[3] = %d\n",
1159			     atomic_read(&priv->wmm_tx_pending[3]));
1160		p += sprintf(p, "media_state=\"%s\"\n", !priv->media_connected ?
1161			     "Disconnected" : "Connected");
1162		p += sprintf(p, "carrier %s\n", (netif_carrier_ok(priv->netdev)
1163			     ? "on" : "off"));
1164		for (idx = 0; idx < priv->netdev->num_tx_queues; idx++) {
1165			txq = netdev_get_tx_queue(priv->netdev, idx);
1166			p += sprintf(p, "tx queue %d:%s  ", idx,
1167				     netif_tx_queue_stopped(txq) ?
1168				     "stopped" : "started");
1169		}
1170		p += sprintf(p, "\n%s: num_tx_timeout = %d\n",
1171			     priv->netdev->name, priv->num_tx_timeout);
1172	}
1173
1174	if (adapter->iface_type == MWIFIEX_SDIO ||
1175	    adapter->iface_type == MWIFIEX_PCIE) {
1176		p += sprintf(p, "\n=== %s register dump===\n",
1177			     adapter->iface_type == MWIFIEX_SDIO ?
1178							"SDIO" : "PCIE");
1179		if (adapter->if_ops.reg_dump)
1180			p += adapter->if_ops.reg_dump(adapter, p);
1181	}
1182	p += sprintf(p, "\n=== more debug information\n");
1183	debug_info = kzalloc(sizeof(*debug_info), GFP_KERNEL);
1184	if (debug_info) {
1185		for (i = 0; i < adapter->priv_num; i++) {
1186			if (!adapter->priv[i]->netdev)
1187				continue;
1188			priv = adapter->priv[i];
1189			mwifiex_get_debug_info(priv, debug_info);
1190			p += mwifiex_debug_info_to_buffer(priv, p, debug_info);
1191			break;
1192		}
1193		kfree(debug_info);
1194	}
1195
1196	strcpy(p, "\n========End dump========\n");
1197	p += strlen("\n========End dump========\n");
1198	mwifiex_dbg(adapter, MSG, "===mwifiex driverinfo dump end===\n");
1199	adapter->devdump_len = p - (char *)adapter->devdump_data;
1200}
1201EXPORT_SYMBOL_GPL(mwifiex_drv_info_dump);
1202
1203void mwifiex_prepare_fw_dump_info(struct mwifiex_adapter *adapter)
1204{
1205	u8 idx;
1206	char *fw_dump_ptr;
1207	u32 dump_len = 0;
1208
1209	for (idx = 0; idx < adapter->num_mem_types; idx++) {
1210		struct memory_type_mapping *entry =
1211				&adapter->mem_type_mapping_tbl[idx];
1212
1213		if (entry->mem_ptr) {
1214			dump_len += (strlen("========Start dump ") +
1215					strlen(entry->mem_name) +
1216					strlen("========\n") +
1217					(entry->mem_size + 1) +
1218					strlen("\n========End dump========\n"));
1219		}
1220	}
1221
1222	if (dump_len + 1 + adapter->devdump_len > MWIFIEX_FW_DUMP_SIZE) {
1223		/* Realloc in case buffer overflow */
1224		fw_dump_ptr = vzalloc(dump_len + 1 + adapter->devdump_len);
1225		mwifiex_dbg(adapter, MSG, "Realloc device dump data.\n");
1226		if (!fw_dump_ptr) {
1227			vfree(adapter->devdump_data);
1228			mwifiex_dbg(adapter, ERROR,
1229				    "vzalloc devdump data failure!\n");
1230			return;
1231		}
1232
1233		memmove(fw_dump_ptr, adapter->devdump_data,
1234			adapter->devdump_len);
1235		vfree(adapter->devdump_data);
1236		adapter->devdump_data = fw_dump_ptr;
1237	}
1238
1239	fw_dump_ptr = (char *)adapter->devdump_data + adapter->devdump_len;
1240
1241	for (idx = 0; idx < adapter->num_mem_types; idx++) {
1242		struct memory_type_mapping *entry =
1243					&adapter->mem_type_mapping_tbl[idx];
1244
1245		if (entry->mem_ptr) {
1246			strcpy(fw_dump_ptr, "========Start dump ");
1247			fw_dump_ptr += strlen("========Start dump ");
1248
1249			strcpy(fw_dump_ptr, entry->mem_name);
1250			fw_dump_ptr += strlen(entry->mem_name);
1251
1252			strcpy(fw_dump_ptr, "========\n");
1253			fw_dump_ptr += strlen("========\n");
1254
1255			memcpy(fw_dump_ptr, entry->mem_ptr, entry->mem_size);
1256			fw_dump_ptr += entry->mem_size;
1257
1258			strcpy(fw_dump_ptr, "\n========End dump========\n");
1259			fw_dump_ptr += strlen("\n========End dump========\n");
1260		}
1261	}
1262
1263	adapter->devdump_len = fw_dump_ptr - (char *)adapter->devdump_data;
1264
1265	for (idx = 0; idx < adapter->num_mem_types; idx++) {
1266		struct memory_type_mapping *entry =
1267			&adapter->mem_type_mapping_tbl[idx];
1268
1269		vfree(entry->mem_ptr);
1270		entry->mem_ptr = NULL;
1271		entry->mem_size = 0;
1272	}
1273}
1274EXPORT_SYMBOL_GPL(mwifiex_prepare_fw_dump_info);
1275
1276/*
1277 * CFG802.11 network device handler for statistics retrieval.
1278 */
1279static struct net_device_stats *mwifiex_get_stats(struct net_device *dev)
1280{
1281	struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1282
1283	return &priv->stats;
1284}
1285
1286static u16
1287mwifiex_netdev_select_wmm_queue(struct net_device *dev, struct sk_buff *skb,
1288				struct net_device *sb_dev)
1289{
1290	skb->priority = cfg80211_classify8021d(skb, NULL);
1291	return mwifiex_1d_to_wmm_queue[skb->priority];
1292}
1293
1294/* Network device handlers */
1295static const struct net_device_ops mwifiex_netdev_ops = {
1296	.ndo_open = mwifiex_open,
1297	.ndo_stop = mwifiex_close,
1298	.ndo_start_xmit = mwifiex_hard_start_xmit,
1299	.ndo_set_mac_address = mwifiex_ndo_set_mac_address,
1300	.ndo_validate_addr = eth_validate_addr,
1301	.ndo_tx_timeout = mwifiex_tx_timeout,
1302	.ndo_get_stats = mwifiex_get_stats,
1303	.ndo_set_rx_mode = mwifiex_set_multicast_list,
1304	.ndo_select_queue = mwifiex_netdev_select_wmm_queue,
1305};
1306
1307/*
1308 * This function initializes the private structure parameters.
1309 *
1310 * The following wait queues are initialized -
1311 *      - IOCTL wait queue
1312 *      - Command wait queue
1313 *      - Statistics wait queue
1314 *
1315 * ...and the following default parameters are set -
1316 *      - Current key index     : Set to 0
1317 *      - Rate index            : Set to auto
1318 *      - Media connected       : Set to disconnected
1319 *      - Adhoc link sensed     : Set to false
1320 *      - Nick name             : Set to null
1321 *      - Number of Tx timeout  : Set to 0
1322 *      - Device address        : Set to current address
1323 *      - Rx histogram statistc : Set to 0
1324 *
1325 * In addition, the CFG80211 work queue is also created.
1326 */
1327void mwifiex_init_priv_params(struct mwifiex_private *priv,
1328			      struct net_device *dev)
1329{
1330	dev->netdev_ops = &mwifiex_netdev_ops;
1331	dev->needs_free_netdev = true;
1332	/* Initialize private structure */
1333	priv->current_key_index = 0;
1334	priv->media_connected = false;
1335	memset(priv->mgmt_ie, 0,
1336	       sizeof(struct mwifiex_ie) * MAX_MGMT_IE_INDEX);
1337	priv->beacon_idx = MWIFIEX_AUTO_IDX_MASK;
1338	priv->proberesp_idx = MWIFIEX_AUTO_IDX_MASK;
1339	priv->assocresp_idx = MWIFIEX_AUTO_IDX_MASK;
1340	priv->gen_idx = MWIFIEX_AUTO_IDX_MASK;
1341	priv->num_tx_timeout = 0;
1342	if (is_valid_ether_addr(dev->dev_addr))
1343		ether_addr_copy(priv->curr_addr, dev->dev_addr);
1344	else
1345		ether_addr_copy(priv->curr_addr, priv->adapter->perm_addr);
1346
1347	if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA ||
1348	    GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_UAP) {
1349		priv->hist_data = kmalloc(sizeof(*priv->hist_data), GFP_KERNEL);
1350		if (priv->hist_data)
1351			mwifiex_hist_data_reset(priv);
1352	}
1353}
1354
1355/*
1356 * This function check if command is pending.
1357 */
1358int is_command_pending(struct mwifiex_adapter *adapter)
1359{
1360	int is_cmd_pend_q_empty;
1361
1362	spin_lock_bh(&adapter->cmd_pending_q_lock);
1363	is_cmd_pend_q_empty = list_empty(&adapter->cmd_pending_q);
1364	spin_unlock_bh(&adapter->cmd_pending_q_lock);
1365
1366	return !is_cmd_pend_q_empty;
1367}
1368
1369/* This is the host mlme work queue function.
1370 * It handles the host mlme operations.
1371 */
1372static void mwifiex_host_mlme_work_queue(struct work_struct *work)
1373{
1374	struct mwifiex_adapter *adapter =
1375		container_of(work, struct mwifiex_adapter, host_mlme_work);
1376
1377	if (test_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags))
1378		return;
1379
1380	/* Check for host mlme disconnection */
1381	if (adapter->host_mlme_link_lost) {
1382		if (adapter->priv_link_lost) {
1383			mwifiex_reset_connect_state(adapter->priv_link_lost,
1384						    WLAN_REASON_DEAUTH_LEAVING,
1385						    true);
1386			adapter->priv_link_lost = NULL;
1387		}
1388		adapter->host_mlme_link_lost = false;
1389	}
1390
1391	/* Check for host mlme Assoc Resp */
1392	if (adapter->assoc_resp_received) {
1393		mwifiex_process_assoc_resp(adapter);
1394		adapter->assoc_resp_received = false;
1395	}
1396}
1397
1398/*
1399 * This is the RX work queue function.
1400 *
1401 * It handles the RX operations.
1402 */
1403static void mwifiex_rx_work_queue(struct work_struct *work)
1404{
1405	struct mwifiex_adapter *adapter =
1406		container_of(work, struct mwifiex_adapter, rx_work);
1407
1408	if (test_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags))
1409		return;
1410	mwifiex_process_rx(adapter);
1411}
1412
1413/*
1414 * This is the main work queue function.
1415 *
1416 * It handles the main process, which in turn handles the complete
1417 * driver operations.
1418 */
1419static void mwifiex_main_work_queue(struct work_struct *work)
1420{
1421	struct mwifiex_adapter *adapter =
1422		container_of(work, struct mwifiex_adapter, main_work);
1423
1424	if (test_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags))
1425		return;
1426	mwifiex_main_process(adapter);
1427}
1428
1429/* Common teardown code used for both device removal and reset */
1430static void mwifiex_uninit_sw(struct mwifiex_adapter *adapter)
1431{
1432	struct mwifiex_private *priv;
1433	int i;
1434
1435	/* We can no longer handle interrupts once we start doing the teardown
1436	 * below.
1437	 */
1438	if (adapter->if_ops.disable_int)
1439		adapter->if_ops.disable_int(adapter);
1440
1441	set_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags);
1442	mwifiex_terminate_workqueue(adapter);
1443	adapter->int_status = 0;
1444
1445	/* Stop data */
1446	for (i = 0; i < adapter->priv_num; i++) {
1447		priv = adapter->priv[i];
1448		if (priv->netdev) {
1449			mwifiex_stop_net_dev_queue(priv->netdev, adapter);
1450			if (netif_carrier_ok(priv->netdev))
1451				netif_carrier_off(priv->netdev);
1452			netif_device_detach(priv->netdev);
1453		}
1454	}
1455
1456	mwifiex_dbg(adapter, CMD, "cmd: calling mwifiex_shutdown_drv...\n");
1457	mwifiex_shutdown_drv(adapter);
1458	mwifiex_dbg(adapter, CMD, "cmd: mwifiex_shutdown_drv done\n");
1459
1460	if (atomic_read(&adapter->rx_pending) ||
1461	    atomic_read(&adapter->tx_pending) ||
1462	    atomic_read(&adapter->cmd_pending)) {
1463		mwifiex_dbg(adapter, ERROR,
1464			    "rx_pending=%d, tx_pending=%d,\t"
1465			    "cmd_pending=%d\n",
1466			    atomic_read(&adapter->rx_pending),
1467			    atomic_read(&adapter->tx_pending),
1468			    atomic_read(&adapter->cmd_pending));
1469	}
1470
1471	for (i = 0; i < adapter->priv_num; i++) {
1472		priv = adapter->priv[i];
1473		rtnl_lock();
1474		if (priv->netdev &&
1475		    priv->wdev.iftype != NL80211_IFTYPE_UNSPECIFIED) {
1476			/*
1477			 * Close the netdev now, because if we do it later, the
1478			 * netdev notifiers will need to acquire the wiphy lock
1479			 * again --> deadlock.
1480			 */
1481			dev_close(priv->wdev.netdev);
1482			wiphy_lock(adapter->wiphy);
1483			mwifiex_del_virtual_intf(adapter->wiphy, &priv->wdev);
1484			wiphy_unlock(adapter->wiphy);
1485		}
1486		rtnl_unlock();
1487	}
1488
1489	wiphy_unregister(adapter->wiphy);
1490	wiphy_free(adapter->wiphy);
1491	adapter->wiphy = NULL;
1492
1493	kfree(adapter->chan_stats);
1494	mwifiex_free_cmd_buffers(adapter);
1495}
1496
1497/*
1498 * This function can be used for shutting down the adapter SW.
1499 */
1500int mwifiex_shutdown_sw(struct mwifiex_adapter *adapter)
1501{
1502	struct mwifiex_private *priv;
1503
1504	if (!adapter)
1505		return 0;
1506
1507	wait_for_completion(adapter->fw_done);
1508	/* Caller should ensure we aren't suspending while this happens */
1509	reinit_completion(adapter->fw_done);
1510
1511	priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
1512	mwifiex_deauthenticate(priv, NULL);
1513
1514	mwifiex_init_shutdown_fw(priv, MWIFIEX_FUNC_SHUTDOWN);
1515
1516	mwifiex_uninit_sw(adapter);
1517	adapter->is_up = false;
1518
1519	if (adapter->if_ops.down_dev)
1520		adapter->if_ops.down_dev(adapter);
1521
1522	return 0;
1523}
1524EXPORT_SYMBOL_GPL(mwifiex_shutdown_sw);
1525
1526/* This function can be used for reinitting the adapter SW. Required
1527 * code is extracted from mwifiex_add_card()
1528 */
1529int
1530mwifiex_reinit_sw(struct mwifiex_adapter *adapter)
1531{
1532	int ret;
1533
1534	mwifiex_init_lock_list(adapter);
1535	if (adapter->if_ops.up_dev)
1536		adapter->if_ops.up_dev(adapter);
1537
1538	adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING;
1539	clear_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags);
1540	clear_bit(MWIFIEX_IS_SUSPENDED, &adapter->work_flags);
1541	adapter->hs_activated = false;
1542	clear_bit(MWIFIEX_IS_CMD_TIMEDOUT, &adapter->work_flags);
1543	init_waitqueue_head(&adapter->hs_activate_wait_q);
1544	init_waitqueue_head(&adapter->cmd_wait_q.wait);
1545	adapter->cmd_wait_q.status = 0;
1546	adapter->scan_wait_q_woken = false;
1547
1548	if ((num_possible_cpus() > 1) || adapter->iface_type == MWIFIEX_USB)
1549		adapter->rx_work_enabled = true;
1550
1551	adapter->workqueue =
1552		alloc_workqueue("MWIFIEX_WORK_QUEUE",
1553				WQ_HIGHPRI | WQ_MEM_RECLAIM | WQ_UNBOUND, 0);
1554	if (!adapter->workqueue)
1555		goto err_kmalloc;
1556
1557	INIT_WORK(&adapter->main_work, mwifiex_main_work_queue);
1558
1559	if (adapter->rx_work_enabled) {
1560		adapter->rx_workqueue = alloc_workqueue("MWIFIEX_RX_WORK_QUEUE",
1561							WQ_HIGHPRI |
1562							WQ_MEM_RECLAIM |
1563							WQ_UNBOUND, 0);
1564		if (!adapter->rx_workqueue)
1565			goto err_kmalloc;
1566		INIT_WORK(&adapter->rx_work, mwifiex_rx_work_queue);
1567	}
1568
1569	if (adapter->host_mlme_enabled) {
1570		adapter->host_mlme_workqueue =
1571			alloc_workqueue("MWIFIEX_HOST_MLME_WORK_QUEUE",
1572					WQ_HIGHPRI |
1573					WQ_MEM_RECLAIM |
1574					WQ_UNBOUND, 0);
1575		if (!adapter->host_mlme_workqueue)
1576			goto err_kmalloc;
1577		INIT_WORK(&adapter->host_mlme_work,
1578			  mwifiex_host_mlme_work_queue);
1579	}
1580
1581	/* Register the device. Fill up the private data structure with
1582	 * relevant information from the card. Some code extracted from
1583	 * mwifiex_register_dev()
1584	 */
1585	mwifiex_dbg(adapter, INFO, "%s, mwifiex_init_hw_fw()...\n", __func__);
1586
1587	if (mwifiex_init_hw_fw(adapter, false)) {
1588		mwifiex_dbg(adapter, ERROR,
1589			    "%s: firmware init failed\n", __func__);
1590		goto err_init_fw;
1591	}
1592
1593	/* _mwifiex_fw_dpc() does its own cleanup */
1594	ret = _mwifiex_fw_dpc(adapter->firmware, adapter);
1595	if (ret) {
1596		pr_err("Failed to bring up adapter: %d\n", ret);
1597		return ret;
1598	}
1599	mwifiex_dbg(adapter, INFO, "%s, successful\n", __func__);
1600
1601	return 0;
1602
1603err_init_fw:
1604	mwifiex_dbg(adapter, ERROR, "info: %s: unregister device\n", __func__);
1605	if (adapter->if_ops.unregister_dev)
1606		adapter->if_ops.unregister_dev(adapter);
1607
1608err_kmalloc:
1609	set_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags);
1610	mwifiex_terminate_workqueue(adapter);
1611	if (adapter->hw_status == MWIFIEX_HW_STATUS_READY) {
1612		mwifiex_dbg(adapter, ERROR,
1613			    "info: %s: shutdown mwifiex\n", __func__);
1614		mwifiex_shutdown_drv(adapter);
1615		mwifiex_free_cmd_buffers(adapter);
1616	}
1617
1618	complete_all(adapter->fw_done);
1619	mwifiex_dbg(adapter, INFO, "%s, error\n", __func__);
1620
1621	return -1;
1622}
1623EXPORT_SYMBOL_GPL(mwifiex_reinit_sw);
1624
1625static irqreturn_t mwifiex_irq_wakeup_handler(int irq, void *priv)
1626{
1627	struct mwifiex_adapter *adapter = priv;
1628
1629	dev_dbg(adapter->dev, "%s: wake by wifi", __func__);
1630	adapter->wake_by_wifi = true;
1631	disable_irq_nosync(irq);
1632
1633	/* Notify PM core we are wakeup source */
1634	pm_wakeup_event(adapter->dev, 0);
1635	pm_system_wakeup();
1636
1637	return IRQ_HANDLED;
1638}
1639
1640static void mwifiex_probe_of(struct mwifiex_adapter *adapter)
1641{
1642	int ret;
1643	struct device *dev = adapter->dev;
1644
1645	if (!dev->of_node)
1646		goto err_exit;
1647
1648	adapter->dt_node = dev->of_node;
1649	adapter->irq_wakeup = irq_of_parse_and_map(adapter->dt_node, 0);
1650	if (!adapter->irq_wakeup) {
1651		dev_dbg(dev, "fail to parse irq_wakeup from device tree\n");
1652		goto err_exit;
1653	}
1654
1655	ret = devm_request_irq(dev, adapter->irq_wakeup,
1656			       mwifiex_irq_wakeup_handler,
1657			       IRQF_TRIGGER_LOW | IRQF_NO_AUTOEN,
1658			       "wifi_wake", adapter);
1659	if (ret) {
1660		dev_err(dev, "Failed to request irq_wakeup %d (%d)\n",
1661			adapter->irq_wakeup, ret);
1662		goto err_exit;
1663	}
1664
1665	if (device_init_wakeup(dev, true)) {
1666		dev_err(dev, "fail to init wakeup for mwifiex\n");
1667		goto err_exit;
1668	}
1669	return;
1670
1671err_exit:
1672	adapter->irq_wakeup = -1;
1673}
1674
1675/*
1676 * This function adds the card.
1677 *
1678 * This function follows the following major steps to set up the device -
1679 *      - Initialize software. This includes probing the card, registering
1680 *        the interface operations table, and allocating/initializing the
1681 *        adapter structure
1682 *      - Set up the netlink socket
1683 *      - Create and start the main work queue
1684 *      - Register the device
1685 *      - Initialize firmware and hardware
1686 *      - Add logical interfaces
1687 */
1688int
1689mwifiex_add_card(void *card, struct completion *fw_done,
1690		 const struct mwifiex_if_ops *if_ops, u8 iface_type,
1691		 struct device *dev)
1692{
1693	struct mwifiex_adapter *adapter;
1694
1695	if (mwifiex_register(card, dev, if_ops, (void **)&adapter)) {
1696		pr_err("%s: software init failed\n", __func__);
1697		goto err_init_sw;
1698	}
1699
1700	mwifiex_probe_of(adapter);
1701
1702	adapter->iface_type = iface_type;
1703	adapter->fw_done = fw_done;
1704
1705	adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING;
1706	clear_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags);
1707	clear_bit(MWIFIEX_IS_SUSPENDED, &adapter->work_flags);
1708	adapter->hs_activated = false;
1709	init_waitqueue_head(&adapter->hs_activate_wait_q);
1710	init_waitqueue_head(&adapter->cmd_wait_q.wait);
1711	adapter->cmd_wait_q.status = 0;
1712	adapter->scan_wait_q_woken = false;
1713
1714	if ((num_possible_cpus() > 1) || adapter->iface_type == MWIFIEX_USB)
1715		adapter->rx_work_enabled = true;
1716
1717	adapter->workqueue =
1718		alloc_workqueue("MWIFIEX_WORK_QUEUE",
1719				WQ_HIGHPRI | WQ_MEM_RECLAIM | WQ_UNBOUND, 0);
1720	if (!adapter->workqueue)
1721		goto err_kmalloc;
1722
1723	INIT_WORK(&adapter->main_work, mwifiex_main_work_queue);
1724
1725	if (adapter->rx_work_enabled) {
1726		adapter->rx_workqueue = alloc_workqueue("MWIFIEX_RX_WORK_QUEUE",
1727							WQ_HIGHPRI |
1728							WQ_MEM_RECLAIM |
1729							WQ_UNBOUND, 0);
1730		if (!adapter->rx_workqueue)
1731			goto err_kmalloc;
1732
1733		INIT_WORK(&adapter->rx_work, mwifiex_rx_work_queue);
1734	}
1735
1736	/* Register the device. Fill up the private data structure with relevant
1737	   information from the card. */
1738	if (adapter->if_ops.register_dev(adapter)) {
1739		pr_err("%s: failed to register mwifiex device\n", __func__);
1740		goto err_registerdev;
1741	}
1742
1743	if (adapter->host_mlme_enabled) {
1744		adapter->host_mlme_workqueue =
1745			alloc_workqueue("MWIFIEX_HOST_MLME_WORK_QUEUE",
1746					WQ_HIGHPRI |
1747					WQ_MEM_RECLAIM |
1748					WQ_UNBOUND, 0);
1749		if (!adapter->host_mlme_workqueue)
1750			goto err_kmalloc;
1751		INIT_WORK(&adapter->host_mlme_work,
1752			  mwifiex_host_mlme_work_queue);
1753	}
1754
1755	if (mwifiex_init_hw_fw(adapter, true)) {
1756		pr_err("%s: firmware init failed\n", __func__);
1757		goto err_init_fw;
1758	}
1759
1760	return 0;
1761
1762err_init_fw:
1763	pr_debug("info: %s: unregister device\n", __func__);
1764	if (adapter->if_ops.unregister_dev)
1765		adapter->if_ops.unregister_dev(adapter);
1766err_registerdev:
1767	set_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags);
1768	mwifiex_terminate_workqueue(adapter);
1769	if (adapter->hw_status == MWIFIEX_HW_STATUS_READY) {
1770		pr_debug("info: %s: shutdown mwifiex\n", __func__);
1771		mwifiex_shutdown_drv(adapter);
1772		mwifiex_free_cmd_buffers(adapter);
1773	}
1774err_kmalloc:
1775	if (adapter->irq_wakeup >= 0)
1776		device_init_wakeup(adapter->dev, false);
1777	mwifiex_free_adapter(adapter);
1778
1779err_init_sw:
1780
1781	return -1;
1782}
1783EXPORT_SYMBOL_GPL(mwifiex_add_card);
1784
1785/*
1786 * This function removes the card.
1787 *
1788 * This function follows the following major steps to remove the device -
1789 *      - Stop data traffic
1790 *      - Shutdown firmware
1791 *      - Remove the logical interfaces
1792 *      - Terminate the work queue
1793 *      - Unregister the device
1794 *      - Free the adapter structure
1795 */
1796int mwifiex_remove_card(struct mwifiex_adapter *adapter)
1797{
1798	if (!adapter)
1799		return 0;
1800
1801	if (adapter->is_up)
1802		mwifiex_uninit_sw(adapter);
1803
1804	if (adapter->irq_wakeup >= 0)
1805		device_init_wakeup(adapter->dev, false);
1806
1807	/* Unregister device */
1808	mwifiex_dbg(adapter, INFO,
1809		    "info: unregister device\n");
1810	if (adapter->if_ops.unregister_dev)
1811		adapter->if_ops.unregister_dev(adapter);
1812	/* Free adapter structure */
1813	mwifiex_dbg(adapter, INFO,
1814		    "info: free adapter\n");
1815	mwifiex_free_adapter(adapter);
1816
1817	return 0;
1818}
1819EXPORT_SYMBOL_GPL(mwifiex_remove_card);
1820
1821void _mwifiex_dbg(const struct mwifiex_adapter *adapter, int mask,
1822		  const char *fmt, ...)
1823{
1824	struct va_format vaf;
1825	va_list args;
1826
1827	if (!(adapter->debug_mask & mask))
1828		return;
1829
1830	va_start(args, fmt);
1831
1832	vaf.fmt = fmt;
1833	vaf.va = &args;
1834
1835	if (adapter->dev)
1836		dev_info(adapter->dev, "%pV", &vaf);
1837	else
1838		pr_info("%pV", &vaf);
1839
1840	va_end(args);
1841}
1842EXPORT_SYMBOL_GPL(_mwifiex_dbg);
1843
1844/*
1845 * This function initializes the module.
1846 *
1847 * The debug FS is also initialized if configured.
1848 */
1849static int
1850mwifiex_init_module(void)
1851{
1852#ifdef CONFIG_DEBUG_FS
1853	mwifiex_debugfs_init();
1854#endif
1855	return 0;
1856}
1857
1858/*
1859 * This function cleans up the module.
1860 *
1861 * The debug FS is removed if available.
1862 */
1863static void
1864mwifiex_cleanup_module(void)
1865{
1866#ifdef CONFIG_DEBUG_FS
1867	mwifiex_debugfs_remove();
1868#endif
1869}
1870
1871module_init(mwifiex_init_module);
1872module_exit(mwifiex_cleanup_module);
1873
1874MODULE_AUTHOR("Marvell International Ltd.");
1875MODULE_DESCRIPTION("Marvell WiFi-Ex Driver version " VERSION);
1876MODULE_VERSION(VERSION);
1877MODULE_LICENSE("GPL v2");