xref: /openbmc/linux/drivers/net/wireless/marvell/mwifiex/main.c (revision 7f2e85840871f199057e65232ebde846192ed989)
1 /*
2  * Marvell Wireless LAN device driver: major functions
3  *
4  * Copyright (C) 2011-2014, Marvell International Ltd.
5  *
6  * This software file (the "File") is distributed by Marvell International
7  * Ltd. under the terms of the GNU General Public License Version 2, June 1991
8  * (the "License").  You may use, redistribute and/or modify this File in
9  * accordance with the terms and conditions of the License, a copy of which
10  * is available by writing to the Free Software Foundation, Inc.,
11  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
12  * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
13  *
14  * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
15  * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
16  * ARE EXPRESSLY DISCLAIMED.  The License provides additional details about
17  * this warranty disclaimer.
18  */
19 
20 #include <linux/suspend.h>
21 
22 #include "main.h"
23 #include "wmm.h"
24 #include "cfg80211.h"
25 #include "11n.h"
26 
27 #define VERSION	"1.0"
28 #define MFG_FIRMWARE	"mwifiex_mfg.bin"
29 
30 static unsigned int debug_mask = MWIFIEX_DEFAULT_DEBUG_MASK;
31 module_param(debug_mask, uint, 0);
32 MODULE_PARM_DESC(debug_mask, "bitmap for debug flags");
33 
34 const char driver_version[] = "mwifiex " VERSION " (%s) ";
35 static char *cal_data_cfg;
36 module_param(cal_data_cfg, charp, 0);
37 
38 static unsigned short driver_mode;
39 module_param(driver_mode, ushort, 0);
40 MODULE_PARM_DESC(driver_mode,
41 		 "station=0x1(default), ap-sta=0x3, station-p2p=0x5, ap-sta-p2p=0x7");
42 
43 bool mfg_mode;
44 module_param(mfg_mode, bool, 0);
45 MODULE_PARM_DESC(mfg_mode, "manufacturing mode enable:1, disable:0");
46 
47 bool aggr_ctrl;
48 module_param(aggr_ctrl, bool, 0000);
49 MODULE_PARM_DESC(aggr_ctrl, "usb tx aggregation enable:1, disable:0");
50 
51 /*
52  * This function registers the device and performs all the necessary
53  * initializations.
54  *
55  * The following initialization operations are performed -
56  *      - Allocate adapter structure
57  *      - Save interface specific operations table in adapter
58  *      - Call interface specific initialization routine
59  *      - Allocate private structures
60  *      - Set default adapter structure parameters
61  *      - Initialize locks
62  *
63  * In case of any errors during inittialization, this function also ensures
64  * proper cleanup before exiting.
65  */
66 static int mwifiex_register(void *card, struct device *dev,
67 			    struct mwifiex_if_ops *if_ops, void **padapter)
68 {
69 	struct mwifiex_adapter *adapter;
70 	int i;
71 
72 	adapter = kzalloc(sizeof(struct mwifiex_adapter), GFP_KERNEL);
73 	if (!adapter)
74 		return -ENOMEM;
75 
76 	*padapter = adapter;
77 	adapter->dev = dev;
78 	adapter->card = card;
79 
80 	/* Save interface specific operations in adapter */
81 	memmove(&adapter->if_ops, if_ops, sizeof(struct mwifiex_if_ops));
82 	adapter->debug_mask = debug_mask;
83 
84 	/* card specific initialization has been deferred until now .. */
85 	if (adapter->if_ops.init_if)
86 		if (adapter->if_ops.init_if(adapter))
87 			goto error;
88 
89 	adapter->priv_num = 0;
90 
91 	for (i = 0; i < MWIFIEX_MAX_BSS_NUM; i++) {
92 		/* Allocate memory for private structure */
93 		adapter->priv[i] =
94 			kzalloc(sizeof(struct mwifiex_private), GFP_KERNEL);
95 		if (!adapter->priv[i])
96 			goto error;
97 
98 		adapter->priv[i]->adapter = adapter;
99 		adapter->priv_num++;
100 	}
101 	mwifiex_init_lock_list(adapter);
102 
103 	timer_setup(&adapter->cmd_timer, mwifiex_cmd_timeout_func, 0);
104 
105 	return 0;
106 
107 error:
108 	mwifiex_dbg(adapter, ERROR,
109 		    "info: leave mwifiex_register with error\n");
110 
111 	for (i = 0; i < adapter->priv_num; i++)
112 		kfree(adapter->priv[i]);
113 
114 	kfree(adapter);
115 
116 	return -1;
117 }
118 
119 /*
120  * This function unregisters the device and performs all the necessary
121  * cleanups.
122  *
123  * The following cleanup operations are performed -
124  *      - Free the timers
125  *      - Free beacon buffers
126  *      - Free private structures
127  *      - Free adapter structure
128  */
129 static int mwifiex_unregister(struct mwifiex_adapter *adapter)
130 {
131 	s32 i;
132 
133 	if (adapter->if_ops.cleanup_if)
134 		adapter->if_ops.cleanup_if(adapter);
135 
136 	del_timer_sync(&adapter->cmd_timer);
137 
138 	/* Free private structures */
139 	for (i = 0; i < adapter->priv_num; i++) {
140 		if (adapter->priv[i]) {
141 			mwifiex_free_curr_bcn(adapter->priv[i]);
142 			kfree(adapter->priv[i]);
143 		}
144 	}
145 
146 	if (adapter->nd_info) {
147 		for (i = 0 ; i < adapter->nd_info->n_matches ; i++)
148 			kfree(adapter->nd_info->matches[i]);
149 		kfree(adapter->nd_info);
150 		adapter->nd_info = NULL;
151 	}
152 
153 	kfree(adapter->regd);
154 
155 	kfree(adapter);
156 	return 0;
157 }
158 
159 void mwifiex_queue_main_work(struct mwifiex_adapter *adapter)
160 {
161 	unsigned long flags;
162 
163 	spin_lock_irqsave(&adapter->main_proc_lock, flags);
164 	if (adapter->mwifiex_processing) {
165 		adapter->more_task_flag = true;
166 		spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
167 	} else {
168 		spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
169 		queue_work(adapter->workqueue, &adapter->main_work);
170 	}
171 }
172 EXPORT_SYMBOL_GPL(mwifiex_queue_main_work);
173 
174 static void mwifiex_queue_rx_work(struct mwifiex_adapter *adapter)
175 {
176 	unsigned long flags;
177 
178 	spin_lock_irqsave(&adapter->rx_proc_lock, flags);
179 	if (adapter->rx_processing) {
180 		spin_unlock_irqrestore(&adapter->rx_proc_lock, flags);
181 	} else {
182 		spin_unlock_irqrestore(&adapter->rx_proc_lock, flags);
183 		queue_work(adapter->rx_workqueue, &adapter->rx_work);
184 	}
185 }
186 
187 static int mwifiex_process_rx(struct mwifiex_adapter *adapter)
188 {
189 	unsigned long flags;
190 	struct sk_buff *skb;
191 	struct mwifiex_rxinfo *rx_info;
192 
193 	spin_lock_irqsave(&adapter->rx_proc_lock, flags);
194 	if (adapter->rx_processing || adapter->rx_locked) {
195 		spin_unlock_irqrestore(&adapter->rx_proc_lock, flags);
196 		goto exit_rx_proc;
197 	} else {
198 		adapter->rx_processing = true;
199 		spin_unlock_irqrestore(&adapter->rx_proc_lock, flags);
200 	}
201 
202 	/* Check for Rx data */
203 	while ((skb = skb_dequeue(&adapter->rx_data_q))) {
204 		atomic_dec(&adapter->rx_pending);
205 		if ((adapter->delay_main_work ||
206 		     adapter->iface_type == MWIFIEX_USB) &&
207 		    (atomic_read(&adapter->rx_pending) < LOW_RX_PENDING)) {
208 			if (adapter->if_ops.submit_rem_rx_urbs)
209 				adapter->if_ops.submit_rem_rx_urbs(adapter);
210 			adapter->delay_main_work = false;
211 			mwifiex_queue_main_work(adapter);
212 		}
213 		rx_info = MWIFIEX_SKB_RXCB(skb);
214 		if (rx_info->buf_type == MWIFIEX_TYPE_AGGR_DATA) {
215 			if (adapter->if_ops.deaggr_pkt)
216 				adapter->if_ops.deaggr_pkt(adapter, skb);
217 			dev_kfree_skb_any(skb);
218 		} else {
219 			mwifiex_handle_rx_packet(adapter, skb);
220 		}
221 	}
222 	spin_lock_irqsave(&adapter->rx_proc_lock, flags);
223 	adapter->rx_processing = false;
224 	spin_unlock_irqrestore(&adapter->rx_proc_lock, flags);
225 
226 exit_rx_proc:
227 	return 0;
228 }
229 
230 /*
231  * The main process.
232  *
233  * This function is the main procedure of the driver and handles various driver
234  * operations. It runs in a loop and provides the core functionalities.
235  *
236  * The main responsibilities of this function are -
237  *      - Ensure concurrency control
238  *      - Handle pending interrupts and call interrupt handlers
239  *      - Wake up the card if required
240  *      - Handle command responses and call response handlers
241  *      - Handle events and call event handlers
242  *      - Execute pending commands
243  *      - Transmit pending data packets
244  */
245 int mwifiex_main_process(struct mwifiex_adapter *adapter)
246 {
247 	int ret = 0;
248 	unsigned long flags;
249 
250 	spin_lock_irqsave(&adapter->main_proc_lock, flags);
251 
252 	/* Check if already processing */
253 	if (adapter->mwifiex_processing || adapter->main_locked) {
254 		adapter->more_task_flag = true;
255 		spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
256 		return 0;
257 	} else {
258 		adapter->mwifiex_processing = true;
259 		spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
260 	}
261 process_start:
262 	do {
263 		if (adapter->hw_status == MWIFIEX_HW_STATUS_NOT_READY)
264 			break;
265 
266 		/* For non-USB interfaces, If we process interrupts first, it
267 		 * would increase RX pending even further. Avoid this by
268 		 * checking if rx_pending has crossed high threshold and
269 		 * schedule rx work queue and then process interrupts.
270 		 * For USB interface, there are no interrupts. We already have
271 		 * HIGH_RX_PENDING check in usb.c
272 		 */
273 		if (atomic_read(&adapter->rx_pending) >= HIGH_RX_PENDING &&
274 		    adapter->iface_type != MWIFIEX_USB) {
275 			adapter->delay_main_work = true;
276 			mwifiex_queue_rx_work(adapter);
277 			break;
278 		}
279 
280 		/* Handle pending interrupt if any */
281 		if (adapter->int_status) {
282 			if (adapter->hs_activated)
283 				mwifiex_process_hs_config(adapter);
284 			if (adapter->if_ops.process_int_status)
285 				adapter->if_ops.process_int_status(adapter);
286 		}
287 
288 		if (adapter->rx_work_enabled && adapter->data_received)
289 			mwifiex_queue_rx_work(adapter);
290 
291 		/* Need to wake up the card ? */
292 		if ((adapter->ps_state == PS_STATE_SLEEP) &&
293 		    (adapter->pm_wakeup_card_req &&
294 		     !adapter->pm_wakeup_fw_try) &&
295 		    (is_command_pending(adapter) ||
296 		     !skb_queue_empty(&adapter->tx_data_q) ||
297 		     !mwifiex_bypass_txlist_empty(adapter) ||
298 		     !mwifiex_wmm_lists_empty(adapter))) {
299 			adapter->pm_wakeup_fw_try = true;
300 			mod_timer(&adapter->wakeup_timer, jiffies + (HZ*3));
301 			adapter->if_ops.wakeup(adapter);
302 			continue;
303 		}
304 
305 		if (IS_CARD_RX_RCVD(adapter)) {
306 			adapter->data_received = false;
307 			adapter->pm_wakeup_fw_try = false;
308 			del_timer(&adapter->wakeup_timer);
309 			if (adapter->ps_state == PS_STATE_SLEEP)
310 				adapter->ps_state = PS_STATE_AWAKE;
311 		} else {
312 			/* We have tried to wakeup the card already */
313 			if (adapter->pm_wakeup_fw_try)
314 				break;
315 			if (adapter->ps_state == PS_STATE_PRE_SLEEP)
316 				mwifiex_check_ps_cond(adapter);
317 
318 			if (adapter->ps_state != PS_STATE_AWAKE)
319 				break;
320 			if (adapter->tx_lock_flag) {
321 				if (adapter->iface_type == MWIFIEX_USB) {
322 					if (!adapter->usb_mc_setup)
323 						break;
324 				} else
325 					break;
326 			}
327 
328 			if ((!adapter->scan_chan_gap_enabled &&
329 			     adapter->scan_processing) || adapter->data_sent ||
330 			     mwifiex_is_tdls_chan_switching
331 			     (mwifiex_get_priv(adapter,
332 					       MWIFIEX_BSS_ROLE_STA)) ||
333 			    (mwifiex_wmm_lists_empty(adapter) &&
334 			     mwifiex_bypass_txlist_empty(adapter) &&
335 			     skb_queue_empty(&adapter->tx_data_q))) {
336 				if (adapter->cmd_sent || adapter->curr_cmd ||
337 					!mwifiex_is_send_cmd_allowed
338 						(mwifiex_get_priv(adapter,
339 						MWIFIEX_BSS_ROLE_STA)) ||
340 				    (!is_command_pending(adapter)))
341 					break;
342 			}
343 		}
344 
345 		/* Check for event */
346 		if (adapter->event_received) {
347 			adapter->event_received = false;
348 			mwifiex_process_event(adapter);
349 		}
350 
351 		/* Check for Cmd Resp */
352 		if (adapter->cmd_resp_received) {
353 			adapter->cmd_resp_received = false;
354 			mwifiex_process_cmdresp(adapter);
355 
356 			/* call mwifiex back when init_fw is done */
357 			if (adapter->hw_status == MWIFIEX_HW_STATUS_INIT_DONE) {
358 				adapter->hw_status = MWIFIEX_HW_STATUS_READY;
359 				mwifiex_init_fw_complete(adapter);
360 			}
361 		}
362 
363 		/* Check if we need to confirm Sleep Request
364 		   received previously */
365 		if (adapter->ps_state == PS_STATE_PRE_SLEEP)
366 			mwifiex_check_ps_cond(adapter);
367 
368 		/* * The ps_state may have been changed during processing of
369 		 * Sleep Request event.
370 		 */
371 		if ((adapter->ps_state == PS_STATE_SLEEP) ||
372 		    (adapter->ps_state == PS_STATE_PRE_SLEEP) ||
373 		    (adapter->ps_state == PS_STATE_SLEEP_CFM)) {
374 			continue;
375 		}
376 
377 		if (adapter->tx_lock_flag) {
378 			if (adapter->iface_type == MWIFIEX_USB) {
379 				if (!adapter->usb_mc_setup)
380 					continue;
381 			} else
382 				continue;
383 		}
384 
385 		if (!adapter->cmd_sent && !adapter->curr_cmd &&
386 		    mwifiex_is_send_cmd_allowed
387 		    (mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA))) {
388 			if (mwifiex_exec_next_cmd(adapter) == -1) {
389 				ret = -1;
390 				break;
391 			}
392 		}
393 
394 		/** If USB Multi channel setup ongoing,
395 		 *  wait for ready to tx data.
396 		 */
397 		if (adapter->iface_type == MWIFIEX_USB &&
398 		    adapter->usb_mc_setup)
399 			continue;
400 
401 		if ((adapter->scan_chan_gap_enabled ||
402 		     !adapter->scan_processing) &&
403 		    !adapter->data_sent &&
404 		    !skb_queue_empty(&adapter->tx_data_q)) {
405 			mwifiex_process_tx_queue(adapter);
406 			if (adapter->hs_activated) {
407 				adapter->is_hs_configured = false;
408 				mwifiex_hs_activated_event
409 					(mwifiex_get_priv
410 					(adapter, MWIFIEX_BSS_ROLE_ANY),
411 					false);
412 			}
413 		}
414 
415 		if ((adapter->scan_chan_gap_enabled ||
416 		     !adapter->scan_processing) &&
417 		    !adapter->data_sent &&
418 		    !mwifiex_bypass_txlist_empty(adapter) &&
419 		    !mwifiex_is_tdls_chan_switching
420 			(mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA))) {
421 			mwifiex_process_bypass_tx(adapter);
422 			if (adapter->hs_activated) {
423 				adapter->is_hs_configured = false;
424 				mwifiex_hs_activated_event
425 					(mwifiex_get_priv
426 					 (adapter, MWIFIEX_BSS_ROLE_ANY),
427 					 false);
428 			}
429 		}
430 
431 		if ((adapter->scan_chan_gap_enabled ||
432 		     !adapter->scan_processing) &&
433 		    !adapter->data_sent && !mwifiex_wmm_lists_empty(adapter) &&
434 		    !mwifiex_is_tdls_chan_switching
435 			(mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA))) {
436 			mwifiex_wmm_process_tx(adapter);
437 			if (adapter->hs_activated) {
438 				adapter->is_hs_configured = false;
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 ((request_firmware(&adapter->cal_data, cal_data_cfg,
552 				      adapter->dev)) < 0)
553 			mwifiex_dbg(adapter, ERROR,
554 				    "Cal data request_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 	goto done;
635 
636 err_add_intf:
637 	vfree(adapter->chan_stats);
638 err_init_chan_scan:
639 	wiphy_unregister(adapter->wiphy);
640 	wiphy_free(adapter->wiphy);
641 err_init_fw:
642 	if (adapter->if_ops.disable_int)
643 		adapter->if_ops.disable_int(adapter);
644 err_dnld_fw:
645 	mwifiex_dbg(adapter, ERROR,
646 		    "info: %s: unregister device\n", __func__);
647 	if (adapter->if_ops.unregister_dev)
648 		adapter->if_ops.unregister_dev(adapter);
649 
650 	adapter->surprise_removed = true;
651 	mwifiex_terminate_workqueue(adapter);
652 
653 	if (adapter->hw_status == MWIFIEX_HW_STATUS_READY) {
654 		pr_debug("info: %s: shutdown mwifiex\n", __func__);
655 		mwifiex_shutdown_drv(adapter);
656 		mwifiex_free_cmd_buffers(adapter);
657 	}
658 
659 	init_failed = true;
660 done:
661 	if (adapter->cal_data) {
662 		release_firmware(adapter->cal_data);
663 		adapter->cal_data = NULL;
664 	}
665 	if (adapter->firmware) {
666 		release_firmware(adapter->firmware);
667 		adapter->firmware = NULL;
668 	}
669 	if (init_failed) {
670 		if (adapter->irq_wakeup >= 0)
671 			device_init_wakeup(adapter->dev, false);
672 		mwifiex_free_adapter(adapter);
673 	}
674 	/* Tell all current and future waiters we're finished */
675 	complete_all(fw_done);
676 
677 	return init_failed ? -EIO : 0;
678 }
679 
680 static void mwifiex_fw_dpc(const struct firmware *firmware, void *context)
681 {
682 	_mwifiex_fw_dpc(firmware, context);
683 }
684 
685 /*
686  * This function gets the firmware and (if called asynchronously) kicks off the
687  * HW init when done.
688  */
689 static int mwifiex_init_hw_fw(struct mwifiex_adapter *adapter,
690 			      bool req_fw_nowait)
691 {
692 	int ret;
693 
694 	/* Override default firmware with manufacturing one if
695 	 * manufacturing mode is enabled
696 	 */
697 	if (mfg_mode) {
698 		if (strlcpy(adapter->fw_name, MFG_FIRMWARE,
699 			    sizeof(adapter->fw_name)) >=
700 			    sizeof(adapter->fw_name)) {
701 			pr_err("%s: fw_name too long!\n", __func__);
702 			return -1;
703 		}
704 	}
705 
706 	if (req_fw_nowait) {
707 		ret = request_firmware_nowait(THIS_MODULE, 1, adapter->fw_name,
708 					      adapter->dev, GFP_KERNEL, adapter,
709 					      mwifiex_fw_dpc);
710 	} else {
711 		ret = request_firmware(&adapter->firmware,
712 				       adapter->fw_name,
713 				       adapter->dev);
714 	}
715 
716 	if (ret < 0)
717 		mwifiex_dbg(adapter, ERROR, "request_firmware%s error %d\n",
718 			    req_fw_nowait ? "_nowait" : "", ret);
719 	return ret;
720 }
721 
722 /*
723  * CFG802.11 network device handler for open.
724  *
725  * Starts the data queue.
726  */
727 static int
728 mwifiex_open(struct net_device *dev)
729 {
730 	netif_carrier_off(dev);
731 
732 	return 0;
733 }
734 
735 /*
736  * CFG802.11 network device handler for close.
737  */
738 static int
739 mwifiex_close(struct net_device *dev)
740 {
741 	struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
742 
743 	if (priv->scan_request) {
744 		struct cfg80211_scan_info info = {
745 			.aborted = true,
746 		};
747 
748 		mwifiex_dbg(priv->adapter, INFO,
749 			    "aborting scan on ndo_stop\n");
750 		cfg80211_scan_done(priv->scan_request, &info);
751 		priv->scan_request = NULL;
752 		priv->scan_aborting = true;
753 	}
754 
755 	if (priv->sched_scanning) {
756 		mwifiex_dbg(priv->adapter, INFO,
757 			    "aborting bgscan on ndo_stop\n");
758 		mwifiex_stop_bg_scan(priv);
759 		cfg80211_sched_scan_stopped(priv->wdev.wiphy, 0);
760 	}
761 
762 	return 0;
763 }
764 
765 static bool
766 mwifiex_bypass_tx_queue(struct mwifiex_private *priv,
767 			struct sk_buff *skb)
768 {
769 	struct ethhdr *eth_hdr = (struct ethhdr *)skb->data;
770 
771 	if (ntohs(eth_hdr->h_proto) == ETH_P_PAE ||
772 	    mwifiex_is_skb_mgmt_frame(skb) ||
773 	    (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA &&
774 	     ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info) &&
775 	     (ntohs(eth_hdr->h_proto) == ETH_P_TDLS))) {
776 		mwifiex_dbg(priv->adapter, DATA,
777 			    "bypass txqueue; eth type %#x, mgmt %d\n",
778 			     ntohs(eth_hdr->h_proto),
779 			     mwifiex_is_skb_mgmt_frame(skb));
780 		return true;
781 	}
782 
783 	return false;
784 }
785 /*
786  * Add buffer into wmm tx queue and queue work to transmit it.
787  */
788 int mwifiex_queue_tx_pkt(struct mwifiex_private *priv, struct sk_buff *skb)
789 {
790 	struct netdev_queue *txq;
791 	int index = mwifiex_1d_to_wmm_queue[skb->priority];
792 
793 	if (atomic_inc_return(&priv->wmm_tx_pending[index]) >= MAX_TX_PENDING) {
794 		txq = netdev_get_tx_queue(priv->netdev, index);
795 		if (!netif_tx_queue_stopped(txq)) {
796 			netif_tx_stop_queue(txq);
797 			mwifiex_dbg(priv->adapter, DATA,
798 				    "stop queue: %d\n", index);
799 		}
800 	}
801 
802 	if (mwifiex_bypass_tx_queue(priv, skb)) {
803 		atomic_inc(&priv->adapter->tx_pending);
804 		atomic_inc(&priv->adapter->bypass_tx_pending);
805 		mwifiex_wmm_add_buf_bypass_txqueue(priv, skb);
806 	 } else {
807 		atomic_inc(&priv->adapter->tx_pending);
808 		mwifiex_wmm_add_buf_txqueue(priv, skb);
809 	 }
810 
811 	mwifiex_queue_main_work(priv->adapter);
812 
813 	return 0;
814 }
815 
816 struct sk_buff *
817 mwifiex_clone_skb_for_tx_status(struct mwifiex_private *priv,
818 				struct sk_buff *skb, u8 flag, u64 *cookie)
819 {
820 	struct sk_buff *orig_skb = skb;
821 	struct mwifiex_txinfo *tx_info, *orig_tx_info;
822 
823 	skb = skb_clone(skb, GFP_ATOMIC);
824 	if (skb) {
825 		unsigned long flags;
826 		int id;
827 
828 		spin_lock_irqsave(&priv->ack_status_lock, flags);
829 		id = idr_alloc(&priv->ack_status_frames, orig_skb,
830 			       1, 0x10, GFP_ATOMIC);
831 		spin_unlock_irqrestore(&priv->ack_status_lock, flags);
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 int
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 (priv->adapter->surprise_removed) {
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)
944 {
945 	int ret;
946 	u64 mac_addr;
947 
948 	if (priv->bss_type != MWIFIEX_BSS_TYPE_P2P)
949 		goto done;
950 
951 	mac_addr = ether_addr_to_u64(priv->curr_addr);
952 	mac_addr |= BIT_ULL(MWIFIEX_MAC_LOCAL_ADMIN_BIT);
953 	u64_to_ether_addr(mac_addr, priv->curr_addr);
954 
955 	/* Send request to firmware */
956 	ret = mwifiex_send_cmd(priv, HostCmd_CMD_802_11_MAC_ADDRESS,
957 			       HostCmd_ACT_GEN_SET, 0, NULL, true);
958 
959 	if (ret) {
960 		mwifiex_dbg(priv->adapter, ERROR,
961 			    "set mac address failed: ret=%d\n", ret);
962 		return ret;
963 	}
964 
965 done:
966 	memcpy(dev->dev_addr, priv->curr_addr, ETH_ALEN);
967 	return 0;
968 }
969 
970 /* CFG802.11 network device handler for setting MAC address.
971  */
972 static int
973 mwifiex_ndo_set_mac_address(struct net_device *dev, void *addr)
974 {
975 	struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
976 	struct sockaddr *hw_addr = addr;
977 
978 	memcpy(priv->curr_addr, hw_addr->sa_data, ETH_ALEN);
979 	return mwifiex_set_mac_address(priv, dev);
980 }
981 
982 /*
983  * CFG802.11 network device handler for setting multicast list.
984  */
985 static void mwifiex_set_multicast_list(struct net_device *dev)
986 {
987 	struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
988 	struct mwifiex_multicast_list mcast_list;
989 
990 	if (dev->flags & IFF_PROMISC) {
991 		mcast_list.mode = MWIFIEX_PROMISC_MODE;
992 	} else if (dev->flags & IFF_ALLMULTI ||
993 		   netdev_mc_count(dev) > MWIFIEX_MAX_MULTICAST_LIST_SIZE) {
994 		mcast_list.mode = MWIFIEX_ALL_MULTI_MODE;
995 	} else {
996 		mcast_list.mode = MWIFIEX_MULTICAST_MODE;
997 		mcast_list.num_multicast_addr =
998 			mwifiex_copy_mcast_addr(&mcast_list, dev);
999 	}
1000 	mwifiex_request_set_multicast_list(priv, &mcast_list);
1001 }
1002 
1003 /*
1004  * CFG802.11 network device handler for transmission timeout.
1005  */
1006 static void
1007 mwifiex_tx_timeout(struct net_device *dev)
1008 {
1009 	struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1010 
1011 	priv->num_tx_timeout++;
1012 	priv->tx_timeout_cnt++;
1013 	mwifiex_dbg(priv->adapter, ERROR,
1014 		    "%lu : Tx timeout(#%d), bss_type-num = %d-%d\n",
1015 		    jiffies, priv->tx_timeout_cnt, priv->bss_type,
1016 		    priv->bss_num);
1017 	mwifiex_set_trans_start(dev);
1018 
1019 	if (priv->tx_timeout_cnt > TX_TIMEOUT_THRESHOLD &&
1020 	    priv->adapter->if_ops.card_reset) {
1021 		mwifiex_dbg(priv->adapter, ERROR,
1022 			    "tx_timeout_cnt exceeds threshold.\t"
1023 			    "Triggering card reset!\n");
1024 		priv->adapter->if_ops.card_reset(priv->adapter);
1025 	}
1026 }
1027 
1028 void mwifiex_multi_chan_resync(struct mwifiex_adapter *adapter)
1029 {
1030 	struct usb_card_rec *card = adapter->card;
1031 	struct mwifiex_private *priv;
1032 	u16 tx_buf_size;
1033 	int i, ret;
1034 
1035 	card->mc_resync_flag = true;
1036 	for (i = 0; i < MWIFIEX_TX_DATA_PORT; i++) {
1037 		if (atomic_read(&card->port[i].tx_data_urb_pending)) {
1038 			mwifiex_dbg(adapter, WARN, "pending data urb in sys\n");
1039 			return;
1040 		}
1041 	}
1042 
1043 	card->mc_resync_flag = false;
1044 	tx_buf_size = 0xffff;
1045 	priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
1046 	ret = mwifiex_send_cmd(priv, HostCmd_CMD_RECONFIGURE_TX_BUFF,
1047 			       HostCmd_ACT_GEN_SET, 0, &tx_buf_size, false);
1048 	if (ret)
1049 		mwifiex_dbg(adapter, ERROR,
1050 			    "send reconfig tx buf size cmd err\n");
1051 }
1052 EXPORT_SYMBOL_GPL(mwifiex_multi_chan_resync);
1053 
1054 void mwifiex_upload_device_dump(struct mwifiex_adapter *adapter)
1055 {
1056 	/* Dump all the memory data into single file, a userspace script will
1057 	 * be used to split all the memory data to multiple files
1058 	 */
1059 	mwifiex_dbg(adapter, MSG,
1060 		    "== mwifiex dump information to /sys/class/devcoredump start\n");
1061 	dev_coredumpv(adapter->dev, adapter->devdump_data, adapter->devdump_len,
1062 		      GFP_KERNEL);
1063 	mwifiex_dbg(adapter, MSG,
1064 		    "== mwifiex dump information to /sys/class/devcoredump end\n");
1065 
1066 	/* Device dump data will be freed in device coredump release function
1067 	 * after 5 min. Here reset adapter->devdump_data and ->devdump_len
1068 	 * to avoid it been accidentally reused.
1069 	 */
1070 	adapter->devdump_data = NULL;
1071 	adapter->devdump_len = 0;
1072 }
1073 EXPORT_SYMBOL_GPL(mwifiex_upload_device_dump);
1074 
1075 void mwifiex_drv_info_dump(struct mwifiex_adapter *adapter)
1076 {
1077 	char *p;
1078 	char drv_version[64];
1079 	struct usb_card_rec *cardp;
1080 	struct sdio_mmc_card *sdio_card;
1081 	struct mwifiex_private *priv;
1082 	int i, idx;
1083 	struct netdev_queue *txq;
1084 	struct mwifiex_debug_info *debug_info;
1085 
1086 	mwifiex_dbg(adapter, MSG, "===mwifiex driverinfo dump start===\n");
1087 
1088 	p = adapter->devdump_data;
1089 	strcpy(p, "========Start dump driverinfo========\n");
1090 	p += strlen("========Start dump driverinfo========\n");
1091 	p += sprintf(p, "driver_name = " "\"mwifiex\"\n");
1092 
1093 	mwifiex_drv_get_driver_version(adapter, drv_version,
1094 				       sizeof(drv_version) - 1);
1095 	p += sprintf(p, "driver_version = %s\n", drv_version);
1096 
1097 	if (adapter->iface_type == MWIFIEX_USB) {
1098 		cardp = (struct usb_card_rec *)adapter->card;
1099 		p += sprintf(p, "tx_cmd_urb_pending = %d\n",
1100 			     atomic_read(&cardp->tx_cmd_urb_pending));
1101 		p += sprintf(p, "tx_data_urb_pending_port_0 = %d\n",
1102 			     atomic_read(&cardp->port[0].tx_data_urb_pending));
1103 		p += sprintf(p, "tx_data_urb_pending_port_1 = %d\n",
1104 			     atomic_read(&cardp->port[1].tx_data_urb_pending));
1105 		p += sprintf(p, "rx_cmd_urb_pending = %d\n",
1106 			     atomic_read(&cardp->rx_cmd_urb_pending));
1107 		p += sprintf(p, "rx_data_urb_pending = %d\n",
1108 			     atomic_read(&cardp->rx_data_urb_pending));
1109 	}
1110 
1111 	p += sprintf(p, "tx_pending = %d\n",
1112 		     atomic_read(&adapter->tx_pending));
1113 	p += sprintf(p, "rx_pending = %d\n",
1114 		     atomic_read(&adapter->rx_pending));
1115 
1116 	if (adapter->iface_type == MWIFIEX_SDIO) {
1117 		sdio_card = (struct sdio_mmc_card *)adapter->card;
1118 		p += sprintf(p, "\nmp_rd_bitmap=0x%x curr_rd_port=0x%x\n",
1119 			     sdio_card->mp_rd_bitmap, sdio_card->curr_rd_port);
1120 		p += sprintf(p, "mp_wr_bitmap=0x%x curr_wr_port=0x%x\n",
1121 			     sdio_card->mp_wr_bitmap, sdio_card->curr_wr_port);
1122 	}
1123 
1124 	for (i = 0; i < adapter->priv_num; i++) {
1125 		if (!adapter->priv[i] || !adapter->priv[i]->netdev)
1126 			continue;
1127 		priv = adapter->priv[i];
1128 		p += sprintf(p, "\n[interface  : \"%s\"]\n",
1129 			     priv->netdev->name);
1130 		p += sprintf(p, "wmm_tx_pending[0] = %d\n",
1131 			     atomic_read(&priv->wmm_tx_pending[0]));
1132 		p += sprintf(p, "wmm_tx_pending[1] = %d\n",
1133 			     atomic_read(&priv->wmm_tx_pending[1]));
1134 		p += sprintf(p, "wmm_tx_pending[2] = %d\n",
1135 			     atomic_read(&priv->wmm_tx_pending[2]));
1136 		p += sprintf(p, "wmm_tx_pending[3] = %d\n",
1137 			     atomic_read(&priv->wmm_tx_pending[3]));
1138 		p += sprintf(p, "media_state=\"%s\"\n", !priv->media_connected ?
1139 			     "Disconnected" : "Connected");
1140 		p += sprintf(p, "carrier %s\n", (netif_carrier_ok(priv->netdev)
1141 			     ? "on" : "off"));
1142 		for (idx = 0; idx < priv->netdev->num_tx_queues; idx++) {
1143 			txq = netdev_get_tx_queue(priv->netdev, idx);
1144 			p += sprintf(p, "tx queue %d:%s  ", idx,
1145 				     netif_tx_queue_stopped(txq) ?
1146 				     "stopped" : "started");
1147 		}
1148 		p += sprintf(p, "\n%s: num_tx_timeout = %d\n",
1149 			     priv->netdev->name, priv->num_tx_timeout);
1150 	}
1151 
1152 	if (adapter->iface_type == MWIFIEX_SDIO ||
1153 	    adapter->iface_type == MWIFIEX_PCIE) {
1154 		p += sprintf(p, "\n=== %s register dump===\n",
1155 			     adapter->iface_type == MWIFIEX_SDIO ?
1156 							"SDIO" : "PCIE");
1157 		if (adapter->if_ops.reg_dump)
1158 			p += adapter->if_ops.reg_dump(adapter, p);
1159 	}
1160 	p += sprintf(p, "\n=== more debug information\n");
1161 	debug_info = kzalloc(sizeof(*debug_info), GFP_KERNEL);
1162 	if (debug_info) {
1163 		for (i = 0; i < adapter->priv_num; i++) {
1164 			if (!adapter->priv[i] || !adapter->priv[i]->netdev)
1165 				continue;
1166 			priv = adapter->priv[i];
1167 			mwifiex_get_debug_info(priv, debug_info);
1168 			p += mwifiex_debug_info_to_buffer(priv, p, debug_info);
1169 			break;
1170 		}
1171 		kfree(debug_info);
1172 	}
1173 
1174 	strcpy(p, "\n========End dump========\n");
1175 	p += strlen("\n========End dump========\n");
1176 	mwifiex_dbg(adapter, MSG, "===mwifiex driverinfo dump end===\n");
1177 	adapter->devdump_len = p - (char *)adapter->devdump_data;
1178 }
1179 EXPORT_SYMBOL_GPL(mwifiex_drv_info_dump);
1180 
1181 void mwifiex_prepare_fw_dump_info(struct mwifiex_adapter *adapter)
1182 {
1183 	u8 idx;
1184 	char *fw_dump_ptr;
1185 	u32 dump_len = 0;
1186 
1187 	for (idx = 0; idx < adapter->num_mem_types; idx++) {
1188 		struct memory_type_mapping *entry =
1189 				&adapter->mem_type_mapping_tbl[idx];
1190 
1191 		if (entry->mem_ptr) {
1192 			dump_len += (strlen("========Start dump ") +
1193 					strlen(entry->mem_name) +
1194 					strlen("========\n") +
1195 					(entry->mem_size + 1) +
1196 					strlen("\n========End dump========\n"));
1197 		}
1198 	}
1199 
1200 	if (dump_len + 1 + adapter->devdump_len > MWIFIEX_FW_DUMP_SIZE) {
1201 		/* Realloc in case buffer overflow */
1202 		fw_dump_ptr = vzalloc(dump_len + 1 + adapter->devdump_len);
1203 		mwifiex_dbg(adapter, MSG, "Realloc device dump data.\n");
1204 		if (!fw_dump_ptr) {
1205 			vfree(adapter->devdump_data);
1206 			mwifiex_dbg(adapter, ERROR,
1207 				    "vzalloc devdump data failure!\n");
1208 			return;
1209 		}
1210 
1211 		memmove(fw_dump_ptr, adapter->devdump_data,
1212 			adapter->devdump_len);
1213 		vfree(adapter->devdump_data);
1214 		adapter->devdump_data = fw_dump_ptr;
1215 	}
1216 
1217 	fw_dump_ptr = (char *)adapter->devdump_data + adapter->devdump_len;
1218 
1219 	for (idx = 0; idx < adapter->num_mem_types; idx++) {
1220 		struct memory_type_mapping *entry =
1221 					&adapter->mem_type_mapping_tbl[idx];
1222 
1223 		if (entry->mem_ptr) {
1224 			strcpy(fw_dump_ptr, "========Start dump ");
1225 			fw_dump_ptr += strlen("========Start dump ");
1226 
1227 			strcpy(fw_dump_ptr, entry->mem_name);
1228 			fw_dump_ptr += strlen(entry->mem_name);
1229 
1230 			strcpy(fw_dump_ptr, "========\n");
1231 			fw_dump_ptr += strlen("========\n");
1232 
1233 			memcpy(fw_dump_ptr, entry->mem_ptr, entry->mem_size);
1234 			fw_dump_ptr += entry->mem_size;
1235 
1236 			strcpy(fw_dump_ptr, "\n========End dump========\n");
1237 			fw_dump_ptr += strlen("\n========End dump========\n");
1238 		}
1239 	}
1240 
1241 	adapter->devdump_len = fw_dump_ptr - (char *)adapter->devdump_data;
1242 
1243 	for (idx = 0; idx < adapter->num_mem_types; idx++) {
1244 		struct memory_type_mapping *entry =
1245 			&adapter->mem_type_mapping_tbl[idx];
1246 
1247 		vfree(entry->mem_ptr);
1248 		entry->mem_ptr = NULL;
1249 		entry->mem_size = 0;
1250 	}
1251 }
1252 EXPORT_SYMBOL_GPL(mwifiex_prepare_fw_dump_info);
1253 
1254 /*
1255  * CFG802.11 network device handler for statistics retrieval.
1256  */
1257 static struct net_device_stats *mwifiex_get_stats(struct net_device *dev)
1258 {
1259 	struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1260 
1261 	return &priv->stats;
1262 }
1263 
1264 static u16
1265 mwifiex_netdev_select_wmm_queue(struct net_device *dev, struct sk_buff *skb,
1266 				void *accel_priv, select_queue_fallback_t fallback)
1267 {
1268 	skb->priority = cfg80211_classify8021d(skb, NULL);
1269 	return mwifiex_1d_to_wmm_queue[skb->priority];
1270 }
1271 
1272 /* Network device handlers */
1273 static const struct net_device_ops mwifiex_netdev_ops = {
1274 	.ndo_open = mwifiex_open,
1275 	.ndo_stop = mwifiex_close,
1276 	.ndo_start_xmit = mwifiex_hard_start_xmit,
1277 	.ndo_set_mac_address = mwifiex_ndo_set_mac_address,
1278 	.ndo_validate_addr = eth_validate_addr,
1279 	.ndo_tx_timeout = mwifiex_tx_timeout,
1280 	.ndo_get_stats = mwifiex_get_stats,
1281 	.ndo_set_rx_mode = mwifiex_set_multicast_list,
1282 	.ndo_select_queue = mwifiex_netdev_select_wmm_queue,
1283 };
1284 
1285 /*
1286  * This function initializes the private structure parameters.
1287  *
1288  * The following wait queues are initialized -
1289  *      - IOCTL wait queue
1290  *      - Command wait queue
1291  *      - Statistics wait queue
1292  *
1293  * ...and the following default parameters are set -
1294  *      - Current key index     : Set to 0
1295  *      - Rate index            : Set to auto
1296  *      - Media connected       : Set to disconnected
1297  *      - Adhoc link sensed     : Set to false
1298  *      - Nick name             : Set to null
1299  *      - Number of Tx timeout  : Set to 0
1300  *      - Device address        : Set to current address
1301  *      - Rx histogram statistc : Set to 0
1302  *
1303  * In addition, the CFG80211 work queue is also created.
1304  */
1305 void mwifiex_init_priv_params(struct mwifiex_private *priv,
1306 			      struct net_device *dev)
1307 {
1308 	dev->netdev_ops = &mwifiex_netdev_ops;
1309 	dev->needs_free_netdev = true;
1310 	/* Initialize private structure */
1311 	priv->current_key_index = 0;
1312 	priv->media_connected = false;
1313 	memset(priv->mgmt_ie, 0,
1314 	       sizeof(struct mwifiex_ie) * MAX_MGMT_IE_INDEX);
1315 	priv->beacon_idx = MWIFIEX_AUTO_IDX_MASK;
1316 	priv->proberesp_idx = MWIFIEX_AUTO_IDX_MASK;
1317 	priv->assocresp_idx = MWIFIEX_AUTO_IDX_MASK;
1318 	priv->gen_idx = MWIFIEX_AUTO_IDX_MASK;
1319 	priv->num_tx_timeout = 0;
1320 	ether_addr_copy(priv->curr_addr, priv->adapter->perm_addr);
1321 
1322 	if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA ||
1323 	    GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_UAP) {
1324 		priv->hist_data = kmalloc(sizeof(*priv->hist_data), GFP_KERNEL);
1325 		if (priv->hist_data)
1326 			mwifiex_hist_data_reset(priv);
1327 	}
1328 }
1329 
1330 /*
1331  * This function check if command is pending.
1332  */
1333 int is_command_pending(struct mwifiex_adapter *adapter)
1334 {
1335 	unsigned long flags;
1336 	int is_cmd_pend_q_empty;
1337 
1338 	spin_lock_irqsave(&adapter->cmd_pending_q_lock, flags);
1339 	is_cmd_pend_q_empty = list_empty(&adapter->cmd_pending_q);
1340 	spin_unlock_irqrestore(&adapter->cmd_pending_q_lock, flags);
1341 
1342 	return !is_cmd_pend_q_empty;
1343 }
1344 
1345 /*
1346  * This is the RX work queue function.
1347  *
1348  * It handles the RX operations.
1349  */
1350 static void mwifiex_rx_work_queue(struct work_struct *work)
1351 {
1352 	struct mwifiex_adapter *adapter =
1353 		container_of(work, struct mwifiex_adapter, rx_work);
1354 
1355 	if (adapter->surprise_removed)
1356 		return;
1357 	mwifiex_process_rx(adapter);
1358 }
1359 
1360 /*
1361  * This is the main work queue function.
1362  *
1363  * It handles the main process, which in turn handles the complete
1364  * driver operations.
1365  */
1366 static void mwifiex_main_work_queue(struct work_struct *work)
1367 {
1368 	struct mwifiex_adapter *adapter =
1369 		container_of(work, struct mwifiex_adapter, main_work);
1370 
1371 	if (adapter->surprise_removed)
1372 		return;
1373 	mwifiex_main_process(adapter);
1374 }
1375 
1376 /* Common teardown code used for both device removal and reset */
1377 static void mwifiex_uninit_sw(struct mwifiex_adapter *adapter)
1378 {
1379 	struct mwifiex_private *priv;
1380 	int i;
1381 
1382 	/* We can no longer handle interrupts once we start doing the teardown
1383 	 * below.
1384 	 */
1385 	if (adapter->if_ops.disable_int)
1386 		adapter->if_ops.disable_int(adapter);
1387 
1388 	adapter->surprise_removed = true;
1389 	mwifiex_terminate_workqueue(adapter);
1390 	adapter->int_status = 0;
1391 
1392 	/* Stop data */
1393 	for (i = 0; i < adapter->priv_num; i++) {
1394 		priv = adapter->priv[i];
1395 		if (priv && priv->netdev) {
1396 			mwifiex_stop_net_dev_queue(priv->netdev, adapter);
1397 			if (netif_carrier_ok(priv->netdev))
1398 				netif_carrier_off(priv->netdev);
1399 			netif_device_detach(priv->netdev);
1400 		}
1401 	}
1402 
1403 	mwifiex_dbg(adapter, CMD, "cmd: calling mwifiex_shutdown_drv...\n");
1404 	mwifiex_shutdown_drv(adapter);
1405 	mwifiex_dbg(adapter, CMD, "cmd: mwifiex_shutdown_drv done\n");
1406 
1407 	if (atomic_read(&adapter->rx_pending) ||
1408 	    atomic_read(&adapter->tx_pending) ||
1409 	    atomic_read(&adapter->cmd_pending)) {
1410 		mwifiex_dbg(adapter, ERROR,
1411 			    "rx_pending=%d, tx_pending=%d,\t"
1412 			    "cmd_pending=%d\n",
1413 			    atomic_read(&adapter->rx_pending),
1414 			    atomic_read(&adapter->tx_pending),
1415 			    atomic_read(&adapter->cmd_pending));
1416 	}
1417 
1418 	for (i = 0; i < adapter->priv_num; i++) {
1419 		priv = adapter->priv[i];
1420 		if (!priv)
1421 			continue;
1422 		rtnl_lock();
1423 		if (priv->netdev &&
1424 		    priv->wdev.iftype != NL80211_IFTYPE_UNSPECIFIED)
1425 			mwifiex_del_virtual_intf(adapter->wiphy, &priv->wdev);
1426 		rtnl_unlock();
1427 	}
1428 
1429 	wiphy_unregister(adapter->wiphy);
1430 	wiphy_free(adapter->wiphy);
1431 	adapter->wiphy = NULL;
1432 
1433 	vfree(adapter->chan_stats);
1434 	mwifiex_free_cmd_buffers(adapter);
1435 }
1436 
1437 /*
1438  * This function gets called during PCIe function level reset.
1439  */
1440 int mwifiex_shutdown_sw(struct mwifiex_adapter *adapter)
1441 {
1442 	struct mwifiex_private *priv;
1443 
1444 	if (!adapter)
1445 		return 0;
1446 
1447 	wait_for_completion(adapter->fw_done);
1448 	/* Caller should ensure we aren't suspending while this happens */
1449 	reinit_completion(adapter->fw_done);
1450 
1451 	priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
1452 	mwifiex_deauthenticate(priv, NULL);
1453 
1454 	mwifiex_uninit_sw(adapter);
1455 
1456 	if (adapter->if_ops.down_dev)
1457 		adapter->if_ops.down_dev(adapter);
1458 
1459 	return 0;
1460 }
1461 EXPORT_SYMBOL_GPL(mwifiex_shutdown_sw);
1462 
1463 /* This function gets called during PCIe function level reset. Required
1464  * code is extracted from mwifiex_add_card()
1465  */
1466 int
1467 mwifiex_reinit_sw(struct mwifiex_adapter *adapter)
1468 {
1469 	int ret;
1470 
1471 	mwifiex_init_lock_list(adapter);
1472 	if (adapter->if_ops.up_dev)
1473 		adapter->if_ops.up_dev(adapter);
1474 
1475 	adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING;
1476 	adapter->surprise_removed = false;
1477 	init_waitqueue_head(&adapter->init_wait_q);
1478 	adapter->is_suspended = false;
1479 	adapter->hs_activated = false;
1480 	adapter->is_cmd_timedout = 0;
1481 	init_waitqueue_head(&adapter->hs_activate_wait_q);
1482 	init_waitqueue_head(&adapter->cmd_wait_q.wait);
1483 	adapter->cmd_wait_q.status = 0;
1484 	adapter->scan_wait_q_woken = false;
1485 
1486 	if ((num_possible_cpus() > 1) || adapter->iface_type == MWIFIEX_USB)
1487 		adapter->rx_work_enabled = true;
1488 
1489 	adapter->workqueue =
1490 		alloc_workqueue("MWIFIEX_WORK_QUEUE",
1491 				WQ_HIGHPRI | WQ_MEM_RECLAIM | WQ_UNBOUND, 1);
1492 	if (!adapter->workqueue)
1493 		goto err_kmalloc;
1494 
1495 	INIT_WORK(&adapter->main_work, mwifiex_main_work_queue);
1496 
1497 	if (adapter->rx_work_enabled) {
1498 		adapter->rx_workqueue = alloc_workqueue("MWIFIEX_RX_WORK_QUEUE",
1499 							WQ_HIGHPRI |
1500 							WQ_MEM_RECLAIM |
1501 							WQ_UNBOUND, 1);
1502 		if (!adapter->rx_workqueue)
1503 			goto err_kmalloc;
1504 		INIT_WORK(&adapter->rx_work, mwifiex_rx_work_queue);
1505 	}
1506 
1507 	/* Register the device. Fill up the private data structure with
1508 	 * relevant information from the card. Some code extracted from
1509 	 * mwifiex_register_dev()
1510 	 */
1511 	mwifiex_dbg(adapter, INFO, "%s, mwifiex_init_hw_fw()...\n", __func__);
1512 
1513 	if (mwifiex_init_hw_fw(adapter, false)) {
1514 		mwifiex_dbg(adapter, ERROR,
1515 			    "%s: firmware init failed\n", __func__);
1516 		goto err_init_fw;
1517 	}
1518 
1519 	/* _mwifiex_fw_dpc() does its own cleanup */
1520 	ret = _mwifiex_fw_dpc(adapter->firmware, adapter);
1521 	if (ret) {
1522 		pr_err("Failed to bring up adapter: %d\n", ret);
1523 		return ret;
1524 	}
1525 	mwifiex_dbg(adapter, INFO, "%s, successful\n", __func__);
1526 
1527 	return 0;
1528 
1529 err_init_fw:
1530 	mwifiex_dbg(adapter, ERROR, "info: %s: unregister device\n", __func__);
1531 	if (adapter->if_ops.unregister_dev)
1532 		adapter->if_ops.unregister_dev(adapter);
1533 
1534 err_kmalloc:
1535 	adapter->surprise_removed = true;
1536 	mwifiex_terminate_workqueue(adapter);
1537 	if (adapter->hw_status == MWIFIEX_HW_STATUS_READY) {
1538 		mwifiex_dbg(adapter, ERROR,
1539 			    "info: %s: shutdown mwifiex\n", __func__);
1540 		mwifiex_shutdown_drv(adapter);
1541 		mwifiex_free_cmd_buffers(adapter);
1542 	}
1543 
1544 	complete_all(adapter->fw_done);
1545 	mwifiex_dbg(adapter, INFO, "%s, error\n", __func__);
1546 
1547 	return -1;
1548 }
1549 EXPORT_SYMBOL_GPL(mwifiex_reinit_sw);
1550 
1551 static irqreturn_t mwifiex_irq_wakeup_handler(int irq, void *priv)
1552 {
1553 	struct mwifiex_adapter *adapter = priv;
1554 
1555 	dev_dbg(adapter->dev, "%s: wake by wifi", __func__);
1556 	adapter->wake_by_wifi = true;
1557 	disable_irq_nosync(irq);
1558 
1559 	/* Notify PM core we are wakeup source */
1560 	pm_wakeup_event(adapter->dev, 0);
1561 	pm_system_wakeup();
1562 
1563 	return IRQ_HANDLED;
1564 }
1565 
1566 static void mwifiex_probe_of(struct mwifiex_adapter *adapter)
1567 {
1568 	int ret;
1569 	struct device *dev = adapter->dev;
1570 
1571 	if (!dev->of_node)
1572 		goto err_exit;
1573 
1574 	adapter->dt_node = dev->of_node;
1575 	adapter->irq_wakeup = irq_of_parse_and_map(adapter->dt_node, 0);
1576 	if (!adapter->irq_wakeup) {
1577 		dev_dbg(dev, "fail to parse irq_wakeup from device tree\n");
1578 		goto err_exit;
1579 	}
1580 
1581 	ret = devm_request_irq(dev, adapter->irq_wakeup,
1582 			       mwifiex_irq_wakeup_handler, IRQF_TRIGGER_LOW,
1583 			       "wifi_wake", adapter);
1584 	if (ret) {
1585 		dev_err(dev, "Failed to request irq_wakeup %d (%d)\n",
1586 			adapter->irq_wakeup, ret);
1587 		goto err_exit;
1588 	}
1589 
1590 	disable_irq(adapter->irq_wakeup);
1591 	if (device_init_wakeup(dev, true)) {
1592 		dev_err(dev, "fail to init wakeup for mwifiex\n");
1593 		goto err_exit;
1594 	}
1595 	return;
1596 
1597 err_exit:
1598 	adapter->irq_wakeup = -1;
1599 }
1600 
1601 /*
1602  * This function adds the card.
1603  *
1604  * This function follows the following major steps to set up the device -
1605  *      - Initialize software. This includes probing the card, registering
1606  *        the interface operations table, and allocating/initializing the
1607  *        adapter structure
1608  *      - Set up the netlink socket
1609  *      - Create and start the main work queue
1610  *      - Register the device
1611  *      - Initialize firmware and hardware
1612  *      - Add logical interfaces
1613  */
1614 int
1615 mwifiex_add_card(void *card, struct completion *fw_done,
1616 		 struct mwifiex_if_ops *if_ops, u8 iface_type,
1617 		 struct device *dev)
1618 {
1619 	struct mwifiex_adapter *adapter;
1620 
1621 	if (mwifiex_register(card, dev, if_ops, (void **)&adapter)) {
1622 		pr_err("%s: software init failed\n", __func__);
1623 		goto err_init_sw;
1624 	}
1625 
1626 	mwifiex_probe_of(adapter);
1627 
1628 	adapter->iface_type = iface_type;
1629 	adapter->fw_done = fw_done;
1630 
1631 	adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING;
1632 	adapter->surprise_removed = false;
1633 	init_waitqueue_head(&adapter->init_wait_q);
1634 	adapter->is_suspended = false;
1635 	adapter->hs_activated = false;
1636 	init_waitqueue_head(&adapter->hs_activate_wait_q);
1637 	init_waitqueue_head(&adapter->cmd_wait_q.wait);
1638 	adapter->cmd_wait_q.status = 0;
1639 	adapter->scan_wait_q_woken = false;
1640 
1641 	if ((num_possible_cpus() > 1) || adapter->iface_type == MWIFIEX_USB)
1642 		adapter->rx_work_enabled = true;
1643 
1644 	adapter->workqueue =
1645 		alloc_workqueue("MWIFIEX_WORK_QUEUE",
1646 				WQ_HIGHPRI | WQ_MEM_RECLAIM | WQ_UNBOUND, 1);
1647 	if (!adapter->workqueue)
1648 		goto err_kmalloc;
1649 
1650 	INIT_WORK(&adapter->main_work, mwifiex_main_work_queue);
1651 
1652 	if (adapter->rx_work_enabled) {
1653 		adapter->rx_workqueue = alloc_workqueue("MWIFIEX_RX_WORK_QUEUE",
1654 							WQ_HIGHPRI |
1655 							WQ_MEM_RECLAIM |
1656 							WQ_UNBOUND, 1);
1657 		if (!adapter->rx_workqueue)
1658 			goto err_kmalloc;
1659 
1660 		INIT_WORK(&adapter->rx_work, mwifiex_rx_work_queue);
1661 	}
1662 
1663 	/* Register the device. Fill up the private data structure with relevant
1664 	   information from the card. */
1665 	if (adapter->if_ops.register_dev(adapter)) {
1666 		pr_err("%s: failed to register mwifiex device\n", __func__);
1667 		goto err_registerdev;
1668 	}
1669 
1670 	if (mwifiex_init_hw_fw(adapter, true)) {
1671 		pr_err("%s: firmware init failed\n", __func__);
1672 		goto err_init_fw;
1673 	}
1674 
1675 	return 0;
1676 
1677 err_init_fw:
1678 	pr_debug("info: %s: unregister device\n", __func__);
1679 	if (adapter->if_ops.unregister_dev)
1680 		adapter->if_ops.unregister_dev(adapter);
1681 err_registerdev:
1682 	adapter->surprise_removed = true;
1683 	mwifiex_terminate_workqueue(adapter);
1684 	if (adapter->hw_status == MWIFIEX_HW_STATUS_READY) {
1685 		pr_debug("info: %s: shutdown mwifiex\n", __func__);
1686 		mwifiex_shutdown_drv(adapter);
1687 		mwifiex_free_cmd_buffers(adapter);
1688 	}
1689 err_kmalloc:
1690 	if (adapter->irq_wakeup >= 0)
1691 		device_init_wakeup(adapter->dev, false);
1692 	mwifiex_free_adapter(adapter);
1693 
1694 err_init_sw:
1695 
1696 	return -1;
1697 }
1698 EXPORT_SYMBOL_GPL(mwifiex_add_card);
1699 
1700 /*
1701  * This function removes the card.
1702  *
1703  * This function follows the following major steps to remove the device -
1704  *      - Stop data traffic
1705  *      - Shutdown firmware
1706  *      - Remove the logical interfaces
1707  *      - Terminate the work queue
1708  *      - Unregister the device
1709  *      - Free the adapter structure
1710  */
1711 int mwifiex_remove_card(struct mwifiex_adapter *adapter)
1712 {
1713 	if (!adapter)
1714 		return 0;
1715 
1716 	mwifiex_uninit_sw(adapter);
1717 
1718 	if (adapter->irq_wakeup >= 0)
1719 		device_init_wakeup(adapter->dev, false);
1720 
1721 	/* Unregister device */
1722 	mwifiex_dbg(adapter, INFO,
1723 		    "info: unregister device\n");
1724 	if (adapter->if_ops.unregister_dev)
1725 		adapter->if_ops.unregister_dev(adapter);
1726 	/* Free adapter structure */
1727 	mwifiex_dbg(adapter, INFO,
1728 		    "info: free adapter\n");
1729 	mwifiex_free_adapter(adapter);
1730 
1731 	return 0;
1732 }
1733 EXPORT_SYMBOL_GPL(mwifiex_remove_card);
1734 
1735 void _mwifiex_dbg(const struct mwifiex_adapter *adapter, int mask,
1736 		  const char *fmt, ...)
1737 {
1738 	struct va_format vaf;
1739 	va_list args;
1740 
1741 	if (!(adapter->debug_mask & mask))
1742 		return;
1743 
1744 	va_start(args, fmt);
1745 
1746 	vaf.fmt = fmt;
1747 	vaf.va = &args;
1748 
1749 	if (adapter->dev)
1750 		dev_info(adapter->dev, "%pV", &vaf);
1751 	else
1752 		pr_info("%pV", &vaf);
1753 
1754 	va_end(args);
1755 }
1756 EXPORT_SYMBOL_GPL(_mwifiex_dbg);
1757 
1758 /*
1759  * This function initializes the module.
1760  *
1761  * The debug FS is also initialized if configured.
1762  */
1763 static int
1764 mwifiex_init_module(void)
1765 {
1766 #ifdef CONFIG_DEBUG_FS
1767 	mwifiex_debugfs_init();
1768 #endif
1769 	return 0;
1770 }
1771 
1772 /*
1773  * This function cleans up the module.
1774  *
1775  * The debug FS is removed if available.
1776  */
1777 static void
1778 mwifiex_cleanup_module(void)
1779 {
1780 #ifdef CONFIG_DEBUG_FS
1781 	mwifiex_debugfs_remove();
1782 #endif
1783 }
1784 
1785 module_init(mwifiex_init_module);
1786 module_exit(mwifiex_cleanup_module);
1787 
1788 MODULE_AUTHOR("Marvell International Ltd.");
1789 MODULE_DESCRIPTION("Marvell WiFi-Ex Driver version " VERSION);
1790 MODULE_VERSION(VERSION);
1791 MODULE_LICENSE("GPL v2");
1792