1 /******************************************************************************
2  *
3  * Copyright(c) 2003 - 2014 Intel Corporation. All rights reserved.
4  * Copyright(c) 2015 Intel Deutschland GmbH
5  * Copyright (C) 2018 Intel Corporation
6  *
7  * Portions of this file are derived from the ipw3945 project, as well
8  * as portions of the ieee80211 subsystem header files.
9  *
10  * This program is free software; you can redistribute it and/or modify it
11  * under the terms of version 2 of the GNU General Public License as
12  * published by the Free Software Foundation.
13  *
14  * This program is distributed in the hope that it will be useful, but WITHOUT
15  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
16  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
17  * more details.
18  *
19  * The full GNU General Public License is included in this distribution in the
20  * file called LICENSE.
21  *
22  * Contact Information:
23  *  Intel Linux Wireless <linuxwifi@intel.com>
24  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
25  *
26  *****************************************************************************/
27 
28 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
29 
30 #include <linux/kernel.h>
31 #include <linux/module.h>
32 #include <linux/init.h>
33 #include <linux/slab.h>
34 #include <linux/delay.h>
35 #include <linux/sched.h>
36 #include <linux/skbuff.h>
37 #include <linux/netdevice.h>
38 #include <linux/etherdevice.h>
39 #include <linux/if_arp.h>
40 
41 #include <net/mac80211.h>
42 
43 #include <asm/div64.h>
44 
45 #include "iwl-eeprom-read.h"
46 #include "iwl-eeprom-parse.h"
47 #include "iwl-io.h"
48 #include "iwl-trans.h"
49 #include "iwl-op-mode.h"
50 #include "iwl-drv.h"
51 #include "iwl-modparams.h"
52 #include "iwl-prph.h"
53 
54 #include "dev.h"
55 #include "calib.h"
56 #include "agn.h"
57 
58 
59 /******************************************************************************
60  *
61  * module boiler plate
62  *
63  ******************************************************************************/
64 
65 #define DRV_DESCRIPTION	"Intel(R) Wireless WiFi Link AGN driver for Linux"
66 MODULE_DESCRIPTION(DRV_DESCRIPTION);
67 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
68 MODULE_LICENSE("GPL");
69 
70 /* Please keep this array *SORTED* by hex value.
71  * Access is done through binary search.
72  * A warning will be triggered on violation.
73  */
74 static const struct iwl_hcmd_names iwl_dvm_cmd_names[] = {
75 	HCMD_NAME(REPLY_ALIVE),
76 	HCMD_NAME(REPLY_ERROR),
77 	HCMD_NAME(REPLY_ECHO),
78 	HCMD_NAME(REPLY_RXON),
79 	HCMD_NAME(REPLY_RXON_ASSOC),
80 	HCMD_NAME(REPLY_QOS_PARAM),
81 	HCMD_NAME(REPLY_RXON_TIMING),
82 	HCMD_NAME(REPLY_ADD_STA),
83 	HCMD_NAME(REPLY_REMOVE_STA),
84 	HCMD_NAME(REPLY_REMOVE_ALL_STA),
85 	HCMD_NAME(REPLY_TX),
86 	HCMD_NAME(REPLY_TXFIFO_FLUSH),
87 	HCMD_NAME(REPLY_WEPKEY),
88 	HCMD_NAME(REPLY_LEDS_CMD),
89 	HCMD_NAME(REPLY_TX_LINK_QUALITY_CMD),
90 	HCMD_NAME(COEX_PRIORITY_TABLE_CMD),
91 	HCMD_NAME(COEX_MEDIUM_NOTIFICATION),
92 	HCMD_NAME(COEX_EVENT_CMD),
93 	HCMD_NAME(TEMPERATURE_NOTIFICATION),
94 	HCMD_NAME(CALIBRATION_CFG_CMD),
95 	HCMD_NAME(CALIBRATION_RES_NOTIFICATION),
96 	HCMD_NAME(CALIBRATION_COMPLETE_NOTIFICATION),
97 	HCMD_NAME(REPLY_QUIET_CMD),
98 	HCMD_NAME(REPLY_CHANNEL_SWITCH),
99 	HCMD_NAME(CHANNEL_SWITCH_NOTIFICATION),
100 	HCMD_NAME(REPLY_SPECTRUM_MEASUREMENT_CMD),
101 	HCMD_NAME(SPECTRUM_MEASURE_NOTIFICATION),
102 	HCMD_NAME(POWER_TABLE_CMD),
103 	HCMD_NAME(PM_SLEEP_NOTIFICATION),
104 	HCMD_NAME(PM_DEBUG_STATISTIC_NOTIFIC),
105 	HCMD_NAME(REPLY_SCAN_CMD),
106 	HCMD_NAME(REPLY_SCAN_ABORT_CMD),
107 	HCMD_NAME(SCAN_START_NOTIFICATION),
108 	HCMD_NAME(SCAN_RESULTS_NOTIFICATION),
109 	HCMD_NAME(SCAN_COMPLETE_NOTIFICATION),
110 	HCMD_NAME(BEACON_NOTIFICATION),
111 	HCMD_NAME(REPLY_TX_BEACON),
112 	HCMD_NAME(WHO_IS_AWAKE_NOTIFICATION),
113 	HCMD_NAME(REPLY_TX_POWER_DBM_CMD),
114 	HCMD_NAME(QUIET_NOTIFICATION),
115 	HCMD_NAME(REPLY_TX_PWR_TABLE_CMD),
116 	HCMD_NAME(REPLY_TX_POWER_DBM_CMD_V1),
117 	HCMD_NAME(TX_ANT_CONFIGURATION_CMD),
118 	HCMD_NAME(MEASURE_ABORT_NOTIFICATION),
119 	HCMD_NAME(REPLY_BT_CONFIG),
120 	HCMD_NAME(REPLY_STATISTICS_CMD),
121 	HCMD_NAME(STATISTICS_NOTIFICATION),
122 	HCMD_NAME(REPLY_CARD_STATE_CMD),
123 	HCMD_NAME(CARD_STATE_NOTIFICATION),
124 	HCMD_NAME(MISSED_BEACONS_NOTIFICATION),
125 	HCMD_NAME(REPLY_CT_KILL_CONFIG_CMD),
126 	HCMD_NAME(SENSITIVITY_CMD),
127 	HCMD_NAME(REPLY_PHY_CALIBRATION_CMD),
128 	HCMD_NAME(REPLY_WIPAN_PARAMS),
129 	HCMD_NAME(REPLY_WIPAN_RXON),
130 	HCMD_NAME(REPLY_WIPAN_RXON_TIMING),
131 	HCMD_NAME(REPLY_WIPAN_RXON_ASSOC),
132 	HCMD_NAME(REPLY_WIPAN_QOS_PARAM),
133 	HCMD_NAME(REPLY_WIPAN_WEPKEY),
134 	HCMD_NAME(REPLY_WIPAN_P2P_CHANNEL_SWITCH),
135 	HCMD_NAME(REPLY_WIPAN_NOA_NOTIFICATION),
136 	HCMD_NAME(REPLY_WIPAN_DEACTIVATION_COMPLETE),
137 	HCMD_NAME(REPLY_RX_PHY_CMD),
138 	HCMD_NAME(REPLY_RX_MPDU_CMD),
139 	HCMD_NAME(REPLY_RX),
140 	HCMD_NAME(REPLY_COMPRESSED_BA),
141 	HCMD_NAME(REPLY_BT_COEX_PRIO_TABLE),
142 	HCMD_NAME(REPLY_BT_COEX_PROT_ENV),
143 	HCMD_NAME(REPLY_BT_COEX_PROFILE_NOTIF),
144 	HCMD_NAME(REPLY_D3_CONFIG),
145 	HCMD_NAME(REPLY_WOWLAN_PATTERNS),
146 	HCMD_NAME(REPLY_WOWLAN_WAKEUP_FILTER),
147 	HCMD_NAME(REPLY_WOWLAN_TSC_RSC_PARAMS),
148 	HCMD_NAME(REPLY_WOWLAN_TKIP_PARAMS),
149 	HCMD_NAME(REPLY_WOWLAN_KEK_KCK_MATERIAL),
150 	HCMD_NAME(REPLY_WOWLAN_GET_STATUS),
151 };
152 
153 static const struct iwl_hcmd_arr iwl_dvm_groups[] = {
154 	[0x0] = HCMD_ARR(iwl_dvm_cmd_names),
155 };
156 
157 static const struct iwl_op_mode_ops iwl_dvm_ops;
158 
159 void iwl_update_chain_flags(struct iwl_priv *priv)
160 {
161 	struct iwl_rxon_context *ctx;
162 
163 	for_each_context(priv, ctx) {
164 		iwlagn_set_rxon_chain(priv, ctx);
165 		if (ctx->active.rx_chain != ctx->staging.rx_chain)
166 			iwlagn_commit_rxon(priv, ctx);
167 	}
168 }
169 
170 /* Parse the beacon frame to find the TIM element and set tim_idx & tim_size */
171 static void iwl_set_beacon_tim(struct iwl_priv *priv,
172 			       struct iwl_tx_beacon_cmd *tx_beacon_cmd,
173 			       u8 *beacon, u32 frame_size)
174 {
175 	u16 tim_idx;
176 	struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon;
177 
178 	/*
179 	 * The index is relative to frame start but we start looking at the
180 	 * variable-length part of the beacon.
181 	 */
182 	tim_idx = mgmt->u.beacon.variable - beacon;
183 
184 	/* Parse variable-length elements of beacon to find WLAN_EID_TIM */
185 	while ((tim_idx < (frame_size - 2)) &&
186 			(beacon[tim_idx] != WLAN_EID_TIM))
187 		tim_idx += beacon[tim_idx+1] + 2;
188 
189 	/* If TIM field was found, set variables */
190 	if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) {
191 		tx_beacon_cmd->tim_idx = cpu_to_le16(tim_idx);
192 		tx_beacon_cmd->tim_size = beacon[tim_idx+1];
193 	} else
194 		IWL_WARN(priv, "Unable to find TIM Element in beacon\n");
195 }
196 
197 int iwlagn_send_beacon_cmd(struct iwl_priv *priv)
198 {
199 	struct iwl_tx_beacon_cmd *tx_beacon_cmd;
200 	struct iwl_host_cmd cmd = {
201 		.id = REPLY_TX_BEACON,
202 	};
203 	struct ieee80211_tx_info *info;
204 	u32 frame_size;
205 	u32 rate_flags;
206 	u32 rate;
207 
208 	/*
209 	 * We have to set up the TX command, the TX Beacon command, and the
210 	 * beacon contents.
211 	 */
212 
213 	lockdep_assert_held(&priv->mutex);
214 
215 	if (!priv->beacon_ctx) {
216 		IWL_ERR(priv, "trying to build beacon w/o beacon context!\n");
217 		return 0;
218 	}
219 
220 	if (WARN_ON(!priv->beacon_skb))
221 		return -EINVAL;
222 
223 	/* Allocate beacon command */
224 	if (!priv->beacon_cmd)
225 		priv->beacon_cmd = kzalloc(sizeof(*tx_beacon_cmd), GFP_KERNEL);
226 	tx_beacon_cmd = priv->beacon_cmd;
227 	if (!tx_beacon_cmd)
228 		return -ENOMEM;
229 
230 	frame_size = priv->beacon_skb->len;
231 
232 	/* Set up TX command fields */
233 	tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
234 	tx_beacon_cmd->tx.sta_id = priv->beacon_ctx->bcast_sta_id;
235 	tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
236 	tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
237 		TX_CMD_FLG_TSF_MSK | TX_CMD_FLG_STA_RATE_MSK;
238 
239 	/* Set up TX beacon command fields */
240 	iwl_set_beacon_tim(priv, tx_beacon_cmd, priv->beacon_skb->data,
241 			   frame_size);
242 
243 	/* Set up packet rate and flags */
244 	info = IEEE80211_SKB_CB(priv->beacon_skb);
245 
246 	/*
247 	 * Let's set up the rate at least somewhat correctly;
248 	 * it will currently not actually be used by the uCode,
249 	 * it uses the broadcast station's rate instead.
250 	 */
251 	if (info->control.rates[0].idx < 0 ||
252 	    info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
253 		rate = 0;
254 	else
255 		rate = info->control.rates[0].idx;
256 
257 	priv->mgmt_tx_ant = iwl_toggle_tx_ant(priv, priv->mgmt_tx_ant,
258 					      priv->nvm_data->valid_tx_ant);
259 	rate_flags = iwl_ant_idx_to_flags(priv->mgmt_tx_ant);
260 
261 	/* In mac80211, rates for 5 GHz start at 0 */
262 	if (info->band == NL80211_BAND_5GHZ)
263 		rate += IWL_FIRST_OFDM_RATE;
264 	else if (rate >= IWL_FIRST_CCK_RATE && rate <= IWL_LAST_CCK_RATE)
265 		rate_flags |= RATE_MCS_CCK_MSK;
266 
267 	tx_beacon_cmd->tx.rate_n_flags =
268 			iwl_hw_set_rate_n_flags(rate, rate_flags);
269 
270 	/* Submit command */
271 	cmd.len[0] = sizeof(*tx_beacon_cmd);
272 	cmd.data[0] = tx_beacon_cmd;
273 	cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY;
274 	cmd.len[1] = frame_size;
275 	cmd.data[1] = priv->beacon_skb->data;
276 	cmd.dataflags[1] = IWL_HCMD_DFL_NOCOPY;
277 
278 	return iwl_dvm_send_cmd(priv, &cmd);
279 }
280 
281 static void iwl_bg_beacon_update(struct work_struct *work)
282 {
283 	struct iwl_priv *priv =
284 		container_of(work, struct iwl_priv, beacon_update);
285 	struct sk_buff *beacon;
286 
287 	mutex_lock(&priv->mutex);
288 	if (!priv->beacon_ctx) {
289 		IWL_ERR(priv, "updating beacon w/o beacon context!\n");
290 		goto out;
291 	}
292 
293 	if (priv->beacon_ctx->vif->type != NL80211_IFTYPE_AP) {
294 		/*
295 		 * The ucode will send beacon notifications even in
296 		 * IBSS mode, but we don't want to process them. But
297 		 * we need to defer the type check to here due to
298 		 * requiring locking around the beacon_ctx access.
299 		 */
300 		goto out;
301 	}
302 
303 	/* Pull updated AP beacon from mac80211. will fail if not in AP mode */
304 	beacon = ieee80211_beacon_get(priv->hw, priv->beacon_ctx->vif);
305 	if (!beacon) {
306 		IWL_ERR(priv, "update beacon failed -- keeping old\n");
307 		goto out;
308 	}
309 
310 	/* new beacon skb is allocated every time; dispose previous.*/
311 	dev_kfree_skb(priv->beacon_skb);
312 
313 	priv->beacon_skb = beacon;
314 
315 	iwlagn_send_beacon_cmd(priv);
316  out:
317 	mutex_unlock(&priv->mutex);
318 }
319 
320 static void iwl_bg_bt_runtime_config(struct work_struct *work)
321 {
322 	struct iwl_priv *priv =
323 		container_of(work, struct iwl_priv, bt_runtime_config);
324 
325 	mutex_lock(&priv->mutex);
326 	if (test_bit(STATUS_EXIT_PENDING, &priv->status))
327 		goto out;
328 
329 	/* dont send host command if rf-kill is on */
330 	if (!iwl_is_ready_rf(priv))
331 		goto out;
332 
333 	iwlagn_send_advance_bt_config(priv);
334 out:
335 	mutex_unlock(&priv->mutex);
336 }
337 
338 static void iwl_bg_bt_full_concurrency(struct work_struct *work)
339 {
340 	struct iwl_priv *priv =
341 		container_of(work, struct iwl_priv, bt_full_concurrency);
342 	struct iwl_rxon_context *ctx;
343 
344 	mutex_lock(&priv->mutex);
345 
346 	if (test_bit(STATUS_EXIT_PENDING, &priv->status))
347 		goto out;
348 
349 	/* dont send host command if rf-kill is on */
350 	if (!iwl_is_ready_rf(priv))
351 		goto out;
352 
353 	IWL_DEBUG_INFO(priv, "BT coex in %s mode\n",
354 		       priv->bt_full_concurrent ?
355 		       "full concurrency" : "3-wire");
356 
357 	/*
358 	 * LQ & RXON updated cmds must be sent before BT Config cmd
359 	 * to avoid 3-wire collisions
360 	 */
361 	for_each_context(priv, ctx) {
362 		iwlagn_set_rxon_chain(priv, ctx);
363 		iwlagn_commit_rxon(priv, ctx);
364 	}
365 
366 	iwlagn_send_advance_bt_config(priv);
367 out:
368 	mutex_unlock(&priv->mutex);
369 }
370 
371 int iwl_send_statistics_request(struct iwl_priv *priv, u8 flags, bool clear)
372 {
373 	struct iwl_statistics_cmd statistics_cmd = {
374 		.configuration_flags =
375 			clear ? IWL_STATS_CONF_CLEAR_STATS : 0,
376 	};
377 
378 	if (flags & CMD_ASYNC)
379 		return iwl_dvm_send_cmd_pdu(priv, REPLY_STATISTICS_CMD,
380 					CMD_ASYNC,
381 					sizeof(struct iwl_statistics_cmd),
382 					&statistics_cmd);
383 	else
384 		return iwl_dvm_send_cmd_pdu(priv, REPLY_STATISTICS_CMD, 0,
385 					sizeof(struct iwl_statistics_cmd),
386 					&statistics_cmd);
387 }
388 
389 /**
390  * iwl_bg_statistics_periodic - Timer callback to queue statistics
391  *
392  * This callback is provided in order to send a statistics request.
393  *
394  * This timer function is continually reset to execute within
395  * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
396  * was received.  We need to ensure we receive the statistics in order
397  * to update the temperature used for calibrating the TXPOWER.
398  */
399 static void iwl_bg_statistics_periodic(struct timer_list *t)
400 {
401 	struct iwl_priv *priv = from_timer(priv, t, statistics_periodic);
402 
403 	if (test_bit(STATUS_EXIT_PENDING, &priv->status))
404 		return;
405 
406 	/* dont send host command if rf-kill is on */
407 	if (!iwl_is_ready_rf(priv))
408 		return;
409 
410 	iwl_send_statistics_request(priv, CMD_ASYNC, false);
411 }
412 
413 
414 static void iwl_print_cont_event_trace(struct iwl_priv *priv, u32 base,
415 					u32 start_idx, u32 num_events,
416 					u32 capacity, u32 mode)
417 {
418 	u32 i;
419 	u32 ptr;        /* SRAM byte address of log data */
420 	u32 ev, time, data; /* event log data */
421 	unsigned long reg_flags;
422 
423 	if (mode == 0)
424 		ptr = base + (4 * sizeof(u32)) + (start_idx * 2 * sizeof(u32));
425 	else
426 		ptr = base + (4 * sizeof(u32)) + (start_idx * 3 * sizeof(u32));
427 
428 	/* Make sure device is powered up for SRAM reads */
429 	if (!iwl_trans_grab_nic_access(priv->trans, &reg_flags))
430 		return;
431 
432 	/* Set starting address; reads will auto-increment */
433 	iwl_write32(priv->trans, HBUS_TARG_MEM_RADDR, ptr);
434 
435 	/*
436 	 * Refuse to read more than would have fit into the log from
437 	 * the current start_idx. This used to happen due to the race
438 	 * described below, but now WARN because the code below should
439 	 * prevent it from happening here.
440 	 */
441 	if (WARN_ON(num_events > capacity - start_idx))
442 		num_events = capacity - start_idx;
443 
444 	/*
445 	 * "time" is actually "data" for mode 0 (no timestamp).
446 	 * place event id # at far right for easier visual parsing.
447 	 */
448 	for (i = 0; i < num_events; i++) {
449 		ev = iwl_read32(priv->trans, HBUS_TARG_MEM_RDAT);
450 		time = iwl_read32(priv->trans, HBUS_TARG_MEM_RDAT);
451 		if (mode == 0) {
452 			trace_iwlwifi_dev_ucode_cont_event(
453 					priv->trans->dev, 0, time, ev);
454 		} else {
455 			data = iwl_read32(priv->trans, HBUS_TARG_MEM_RDAT);
456 			trace_iwlwifi_dev_ucode_cont_event(
457 					priv->trans->dev, time, data, ev);
458 		}
459 	}
460 	/* Allow device to power down */
461 	iwl_trans_release_nic_access(priv->trans, &reg_flags);
462 }
463 
464 static void iwl_continuous_event_trace(struct iwl_priv *priv)
465 {
466 	u32 capacity;   /* event log capacity in # entries */
467 	struct {
468 		u32 capacity;
469 		u32 mode;
470 		u32 wrap_counter;
471 		u32 write_counter;
472 	} __packed read;
473 	u32 base;       /* SRAM byte address of event log header */
474 	u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
475 	u32 num_wraps;  /* # times uCode wrapped to top of log */
476 	u32 next_entry; /* index of next entry to be written by uCode */
477 
478 	base = priv->device_pointers.log_event_table;
479 	if (iwlagn_hw_valid_rtc_data_addr(base)) {
480 		iwl_trans_read_mem_bytes(priv->trans, base,
481 					 &read, sizeof(read));
482 		capacity = read.capacity;
483 		mode = read.mode;
484 		num_wraps = read.wrap_counter;
485 		next_entry = read.write_counter;
486 	} else
487 		return;
488 
489 	/*
490 	 * Unfortunately, the uCode doesn't use temporary variables.
491 	 * Therefore, it can happen that we read next_entry == capacity,
492 	 * which really means next_entry == 0.
493 	 */
494 	if (unlikely(next_entry == capacity))
495 		next_entry = 0;
496 	/*
497 	 * Additionally, the uCode increases the write pointer before
498 	 * the wraps counter, so if the write pointer is smaller than
499 	 * the old write pointer (wrap occurred) but we read that no
500 	 * wrap occurred, we actually read between the next_entry and
501 	 * num_wraps update (this does happen in practice!!) -- take
502 	 * that into account by increasing num_wraps.
503 	 */
504 	if (unlikely(next_entry < priv->event_log.next_entry &&
505 		     num_wraps == priv->event_log.num_wraps))
506 		num_wraps++;
507 
508 	if (num_wraps == priv->event_log.num_wraps) {
509 		iwl_print_cont_event_trace(
510 			priv, base, priv->event_log.next_entry,
511 			next_entry - priv->event_log.next_entry,
512 			capacity, mode);
513 
514 		priv->event_log.non_wraps_count++;
515 	} else {
516 		if (num_wraps - priv->event_log.num_wraps > 1)
517 			priv->event_log.wraps_more_count++;
518 		else
519 			priv->event_log.wraps_once_count++;
520 
521 		trace_iwlwifi_dev_ucode_wrap_event(priv->trans->dev,
522 				num_wraps - priv->event_log.num_wraps,
523 				next_entry, priv->event_log.next_entry);
524 
525 		if (next_entry < priv->event_log.next_entry) {
526 			iwl_print_cont_event_trace(
527 				priv, base, priv->event_log.next_entry,
528 				capacity - priv->event_log.next_entry,
529 				capacity, mode);
530 
531 			iwl_print_cont_event_trace(
532 				priv, base, 0, next_entry, capacity, mode);
533 		} else {
534 			iwl_print_cont_event_trace(
535 				priv, base, next_entry,
536 				capacity - next_entry,
537 				capacity, mode);
538 
539 			iwl_print_cont_event_trace(
540 				priv, base, 0, next_entry, capacity, mode);
541 		}
542 	}
543 
544 	priv->event_log.num_wraps = num_wraps;
545 	priv->event_log.next_entry = next_entry;
546 }
547 
548 /**
549  * iwl_bg_ucode_trace - Timer callback to log ucode event
550  *
551  * The timer is continually set to execute every
552  * UCODE_TRACE_PERIOD milliseconds after the last timer expired
553  * this function is to perform continuous uCode event logging operation
554  * if enabled
555  */
556 static void iwl_bg_ucode_trace(struct timer_list *t)
557 {
558 	struct iwl_priv *priv = from_timer(priv, t, ucode_trace);
559 
560 	if (test_bit(STATUS_EXIT_PENDING, &priv->status))
561 		return;
562 
563 	if (priv->event_log.ucode_trace) {
564 		iwl_continuous_event_trace(priv);
565 		/* Reschedule the timer to occur in UCODE_TRACE_PERIOD */
566 		mod_timer(&priv->ucode_trace,
567 			 jiffies + msecs_to_jiffies(UCODE_TRACE_PERIOD));
568 	}
569 }
570 
571 static void iwl_bg_tx_flush(struct work_struct *work)
572 {
573 	struct iwl_priv *priv =
574 		container_of(work, struct iwl_priv, tx_flush);
575 
576 	if (test_bit(STATUS_EXIT_PENDING, &priv->status))
577 		return;
578 
579 	/* do nothing if rf-kill is on */
580 	if (!iwl_is_ready_rf(priv))
581 		return;
582 
583 	IWL_DEBUG_INFO(priv, "device request: flush all tx frames\n");
584 	iwlagn_dev_txfifo_flush(priv);
585 }
586 
587 /*
588  * queue/FIFO/AC mapping definitions
589  */
590 
591 static const u8 iwlagn_bss_ac_to_fifo[] = {
592 	IWL_TX_FIFO_VO,
593 	IWL_TX_FIFO_VI,
594 	IWL_TX_FIFO_BE,
595 	IWL_TX_FIFO_BK,
596 };
597 
598 static const u8 iwlagn_bss_ac_to_queue[] = {
599 	0, 1, 2, 3,
600 };
601 
602 static const u8 iwlagn_pan_ac_to_fifo[] = {
603 	IWL_TX_FIFO_VO_IPAN,
604 	IWL_TX_FIFO_VI_IPAN,
605 	IWL_TX_FIFO_BE_IPAN,
606 	IWL_TX_FIFO_BK_IPAN,
607 };
608 
609 static const u8 iwlagn_pan_ac_to_queue[] = {
610 	7, 6, 5, 4,
611 };
612 
613 static void iwl_init_context(struct iwl_priv *priv, u32 ucode_flags)
614 {
615 	int i;
616 
617 	/*
618 	 * The default context is always valid,
619 	 * the PAN context depends on uCode.
620 	 */
621 	priv->valid_contexts = BIT(IWL_RXON_CTX_BSS);
622 	if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN)
623 		priv->valid_contexts |= BIT(IWL_RXON_CTX_PAN);
624 
625 	for (i = 0; i < NUM_IWL_RXON_CTX; i++)
626 		priv->contexts[i].ctxid = i;
627 
628 	priv->contexts[IWL_RXON_CTX_BSS].always_active = true;
629 	priv->contexts[IWL_RXON_CTX_BSS].is_active = true;
630 	priv->contexts[IWL_RXON_CTX_BSS].rxon_cmd = REPLY_RXON;
631 	priv->contexts[IWL_RXON_CTX_BSS].rxon_timing_cmd = REPLY_RXON_TIMING;
632 	priv->contexts[IWL_RXON_CTX_BSS].rxon_assoc_cmd = REPLY_RXON_ASSOC;
633 	priv->contexts[IWL_RXON_CTX_BSS].qos_cmd = REPLY_QOS_PARAM;
634 	priv->contexts[IWL_RXON_CTX_BSS].ap_sta_id = IWL_AP_ID;
635 	priv->contexts[IWL_RXON_CTX_BSS].wep_key_cmd = REPLY_WEPKEY;
636 	priv->contexts[IWL_RXON_CTX_BSS].bcast_sta_id = IWLAGN_BROADCAST_ID;
637 	priv->contexts[IWL_RXON_CTX_BSS].exclusive_interface_modes =
638 		BIT(NL80211_IFTYPE_ADHOC) | BIT(NL80211_IFTYPE_MONITOR);
639 	priv->contexts[IWL_RXON_CTX_BSS].interface_modes =
640 		BIT(NL80211_IFTYPE_STATION);
641 	priv->contexts[IWL_RXON_CTX_BSS].ap_devtype = RXON_DEV_TYPE_AP;
642 	priv->contexts[IWL_RXON_CTX_BSS].ibss_devtype = RXON_DEV_TYPE_IBSS;
643 	priv->contexts[IWL_RXON_CTX_BSS].station_devtype = RXON_DEV_TYPE_ESS;
644 	priv->contexts[IWL_RXON_CTX_BSS].unused_devtype = RXON_DEV_TYPE_ESS;
645 	memcpy(priv->contexts[IWL_RXON_CTX_BSS].ac_to_queue,
646 	       iwlagn_bss_ac_to_queue, sizeof(iwlagn_bss_ac_to_queue));
647 	memcpy(priv->contexts[IWL_RXON_CTX_BSS].ac_to_fifo,
648 	       iwlagn_bss_ac_to_fifo, sizeof(iwlagn_bss_ac_to_fifo));
649 
650 	priv->contexts[IWL_RXON_CTX_PAN].rxon_cmd = REPLY_WIPAN_RXON;
651 	priv->contexts[IWL_RXON_CTX_PAN].rxon_timing_cmd =
652 		REPLY_WIPAN_RXON_TIMING;
653 	priv->contexts[IWL_RXON_CTX_PAN].rxon_assoc_cmd =
654 		REPLY_WIPAN_RXON_ASSOC;
655 	priv->contexts[IWL_RXON_CTX_PAN].qos_cmd = REPLY_WIPAN_QOS_PARAM;
656 	priv->contexts[IWL_RXON_CTX_PAN].ap_sta_id = IWL_AP_ID_PAN;
657 	priv->contexts[IWL_RXON_CTX_PAN].wep_key_cmd = REPLY_WIPAN_WEPKEY;
658 	priv->contexts[IWL_RXON_CTX_PAN].bcast_sta_id = IWLAGN_PAN_BCAST_ID;
659 	priv->contexts[IWL_RXON_CTX_PAN].station_flags = STA_FLG_PAN_STATION;
660 	priv->contexts[IWL_RXON_CTX_PAN].interface_modes =
661 		BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_AP);
662 
663 	priv->contexts[IWL_RXON_CTX_PAN].ap_devtype = RXON_DEV_TYPE_CP;
664 	priv->contexts[IWL_RXON_CTX_PAN].station_devtype = RXON_DEV_TYPE_2STA;
665 	priv->contexts[IWL_RXON_CTX_PAN].unused_devtype = RXON_DEV_TYPE_P2P;
666 	memcpy(priv->contexts[IWL_RXON_CTX_PAN].ac_to_queue,
667 	       iwlagn_pan_ac_to_queue, sizeof(iwlagn_pan_ac_to_queue));
668 	memcpy(priv->contexts[IWL_RXON_CTX_PAN].ac_to_fifo,
669 	       iwlagn_pan_ac_to_fifo, sizeof(iwlagn_pan_ac_to_fifo));
670 	priv->contexts[IWL_RXON_CTX_PAN].mcast_queue = IWL_IPAN_MCAST_QUEUE;
671 
672 	BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
673 }
674 
675 static void iwl_rf_kill_ct_config(struct iwl_priv *priv)
676 {
677 	struct iwl_ct_kill_config cmd;
678 	struct iwl_ct_kill_throttling_config adv_cmd;
679 	int ret = 0;
680 
681 	iwl_write32(priv->trans, CSR_UCODE_DRV_GP1_CLR,
682 		    CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
683 
684 	priv->thermal_throttle.ct_kill_toggle = false;
685 
686 	if (priv->lib->support_ct_kill_exit) {
687 		adv_cmd.critical_temperature_enter =
688 			cpu_to_le32(priv->hw_params.ct_kill_threshold);
689 		adv_cmd.critical_temperature_exit =
690 			cpu_to_le32(priv->hw_params.ct_kill_exit_threshold);
691 
692 		ret = iwl_dvm_send_cmd_pdu(priv,
693 				       REPLY_CT_KILL_CONFIG_CMD,
694 				       0, sizeof(adv_cmd), &adv_cmd);
695 		if (ret)
696 			IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
697 		else
698 			IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
699 				"succeeded, critical temperature enter is %d,"
700 				"exit is %d\n",
701 				priv->hw_params.ct_kill_threshold,
702 				priv->hw_params.ct_kill_exit_threshold);
703 	} else {
704 		cmd.critical_temperature_R =
705 			cpu_to_le32(priv->hw_params.ct_kill_threshold);
706 
707 		ret = iwl_dvm_send_cmd_pdu(priv,
708 				       REPLY_CT_KILL_CONFIG_CMD,
709 				       0, sizeof(cmd), &cmd);
710 		if (ret)
711 			IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
712 		else
713 			IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
714 				"succeeded, "
715 				"critical temperature is %d\n",
716 				priv->hw_params.ct_kill_threshold);
717 	}
718 }
719 
720 static int iwlagn_send_calib_cfg_rt(struct iwl_priv *priv, u32 cfg)
721 {
722 	struct iwl_calib_cfg_cmd calib_cfg_cmd;
723 	struct iwl_host_cmd cmd = {
724 		.id = CALIBRATION_CFG_CMD,
725 		.len = { sizeof(struct iwl_calib_cfg_cmd), },
726 		.data = { &calib_cfg_cmd, },
727 	};
728 
729 	memset(&calib_cfg_cmd, 0, sizeof(calib_cfg_cmd));
730 	calib_cfg_cmd.ucd_calib_cfg.once.is_enable = IWL_CALIB_RT_CFG_ALL;
731 	calib_cfg_cmd.ucd_calib_cfg.once.start = cpu_to_le32(cfg);
732 
733 	return iwl_dvm_send_cmd(priv, &cmd);
734 }
735 
736 
737 static int iwlagn_send_tx_ant_config(struct iwl_priv *priv, u8 valid_tx_ant)
738 {
739 	struct iwl_tx_ant_config_cmd tx_ant_cmd = {
740 	  .valid = cpu_to_le32(valid_tx_ant),
741 	};
742 
743 	if (IWL_UCODE_API(priv->fw->ucode_ver) > 1) {
744 		IWL_DEBUG_HC(priv, "select valid tx ant: %u\n", valid_tx_ant);
745 		return iwl_dvm_send_cmd_pdu(priv, TX_ANT_CONFIGURATION_CMD, 0,
746 					sizeof(struct iwl_tx_ant_config_cmd),
747 					&tx_ant_cmd);
748 	} else {
749 		IWL_DEBUG_HC(priv, "TX_ANT_CONFIGURATION_CMD not supported\n");
750 		return -EOPNOTSUPP;
751 	}
752 }
753 
754 static void iwl_send_bt_config(struct iwl_priv *priv)
755 {
756 	struct iwl_bt_cmd bt_cmd = {
757 		.lead_time = BT_LEAD_TIME_DEF,
758 		.max_kill = BT_MAX_KILL_DEF,
759 		.kill_ack_mask = 0,
760 		.kill_cts_mask = 0,
761 	};
762 
763 	if (!iwlwifi_mod_params.bt_coex_active)
764 		bt_cmd.flags = BT_COEX_DISABLE;
765 	else
766 		bt_cmd.flags = BT_COEX_ENABLE;
767 
768 	priv->bt_enable_flag = bt_cmd.flags;
769 	IWL_DEBUG_INFO(priv, "BT coex %s\n",
770 		(bt_cmd.flags == BT_COEX_DISABLE) ? "disable" : "active");
771 
772 	if (iwl_dvm_send_cmd_pdu(priv, REPLY_BT_CONFIG,
773 			     0, sizeof(struct iwl_bt_cmd), &bt_cmd))
774 		IWL_ERR(priv, "failed to send BT Coex Config\n");
775 }
776 
777 /**
778  * iwl_alive_start - called after REPLY_ALIVE notification received
779  *                   from protocol/runtime uCode (initialization uCode's
780  *                   Alive gets handled by iwl_init_alive_start()).
781  */
782 int iwl_alive_start(struct iwl_priv *priv)
783 {
784 	int ret = 0;
785 	struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
786 
787 	IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
788 
789 	/* After the ALIVE response, we can send host commands to the uCode */
790 	set_bit(STATUS_ALIVE, &priv->status);
791 
792 	if (iwl_is_rfkill(priv))
793 		return -ERFKILL;
794 
795 	if (priv->event_log.ucode_trace) {
796 		/* start collecting data now */
797 		mod_timer(&priv->ucode_trace, jiffies);
798 	}
799 
800 	/* download priority table before any calibration request */
801 	if (priv->lib->bt_params &&
802 	    priv->lib->bt_params->advanced_bt_coexist) {
803 		/* Configure Bluetooth device coexistence support */
804 		if (priv->lib->bt_params->bt_sco_disable)
805 			priv->bt_enable_pspoll = false;
806 		else
807 			priv->bt_enable_pspoll = true;
808 
809 		priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
810 		priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
811 		priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
812 		iwlagn_send_advance_bt_config(priv);
813 		priv->bt_valid = IWLAGN_BT_VALID_ENABLE_FLAGS;
814 		priv->cur_rssi_ctx = NULL;
815 
816 		iwl_send_prio_tbl(priv);
817 
818 		/* FIXME: w/a to force change uCode BT state machine */
819 		ret = iwl_send_bt_env(priv, IWL_BT_COEX_ENV_OPEN,
820 					 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
821 		if (ret)
822 			return ret;
823 		ret = iwl_send_bt_env(priv, IWL_BT_COEX_ENV_CLOSE,
824 					 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
825 		if (ret)
826 			return ret;
827 	} else if (priv->lib->bt_params) {
828 		/*
829 		 * default is 2-wire BT coexexistence support
830 		 */
831 		iwl_send_bt_config(priv);
832 	}
833 
834 	/*
835 	 * Perform runtime calibrations, including DC calibration.
836 	 */
837 	iwlagn_send_calib_cfg_rt(priv, IWL_CALIB_CFG_DC_IDX);
838 
839 	ieee80211_wake_queues(priv->hw);
840 
841 	/* Configure Tx antenna selection based on H/W config */
842 	iwlagn_send_tx_ant_config(priv, priv->nvm_data->valid_tx_ant);
843 
844 	if (iwl_is_associated_ctx(ctx) && !priv->wowlan) {
845 		struct iwl_rxon_cmd *active_rxon =
846 				(struct iwl_rxon_cmd *)&ctx->active;
847 		/* apply any changes in staging */
848 		ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
849 		active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
850 	} else {
851 		struct iwl_rxon_context *tmp;
852 		/* Initialize our rx_config data */
853 		for_each_context(priv, tmp)
854 			iwl_connection_init_rx_config(priv, tmp);
855 
856 		iwlagn_set_rxon_chain(priv, ctx);
857 	}
858 
859 	if (!priv->wowlan) {
860 		/* WoWLAN ucode will not reply in the same way, skip it */
861 		iwl_reset_run_time_calib(priv);
862 	}
863 
864 	set_bit(STATUS_READY, &priv->status);
865 
866 	/* Configure the adapter for unassociated operation */
867 	ret = iwlagn_commit_rxon(priv, ctx);
868 	if (ret)
869 		return ret;
870 
871 	/* At this point, the NIC is initialized and operational */
872 	iwl_rf_kill_ct_config(priv);
873 
874 	IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
875 
876 	return iwl_power_update_mode(priv, true);
877 }
878 
879 /**
880  * iwl_clear_driver_stations - clear knowledge of all stations from driver
881  * @priv: iwl priv struct
882  *
883  * This is called during iwl_down() to make sure that in the case
884  * we're coming there from a hardware restart mac80211 will be
885  * able to reconfigure stations -- if we're getting there in the
886  * normal down flow then the stations will already be cleared.
887  */
888 static void iwl_clear_driver_stations(struct iwl_priv *priv)
889 {
890 	struct iwl_rxon_context *ctx;
891 
892 	spin_lock_bh(&priv->sta_lock);
893 	memset(priv->stations, 0, sizeof(priv->stations));
894 	priv->num_stations = 0;
895 
896 	priv->ucode_key_table = 0;
897 
898 	for_each_context(priv, ctx) {
899 		/*
900 		 * Remove all key information that is not stored as part
901 		 * of station information since mac80211 may not have had
902 		 * a chance to remove all the keys. When device is
903 		 * reconfigured by mac80211 after an error all keys will
904 		 * be reconfigured.
905 		 */
906 		memset(ctx->wep_keys, 0, sizeof(ctx->wep_keys));
907 		ctx->key_mapping_keys = 0;
908 	}
909 
910 	spin_unlock_bh(&priv->sta_lock);
911 }
912 
913 void iwl_down(struct iwl_priv *priv)
914 {
915 	int exit_pending;
916 
917 	IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
918 
919 	lockdep_assert_held(&priv->mutex);
920 
921 	iwl_scan_cancel_timeout(priv, 200);
922 
923 	exit_pending =
924 		test_and_set_bit(STATUS_EXIT_PENDING, &priv->status);
925 
926 	iwl_clear_ucode_stations(priv, NULL);
927 	iwl_dealloc_bcast_stations(priv);
928 	iwl_clear_driver_stations(priv);
929 
930 	/* reset BT coex data */
931 	priv->bt_status = 0;
932 	priv->cur_rssi_ctx = NULL;
933 	priv->bt_is_sco = 0;
934 	if (priv->lib->bt_params)
935 		priv->bt_traffic_load =
936 			 priv->lib->bt_params->bt_init_traffic_load;
937 	else
938 		priv->bt_traffic_load = 0;
939 	priv->bt_full_concurrent = false;
940 	priv->bt_ci_compliance = 0;
941 
942 	/* Wipe out the EXIT_PENDING status bit if we are not actually
943 	 * exiting the module */
944 	if (!exit_pending)
945 		clear_bit(STATUS_EXIT_PENDING, &priv->status);
946 
947 	if (priv->mac80211_registered)
948 		ieee80211_stop_queues(priv->hw);
949 
950 	priv->ucode_loaded = false;
951 	iwl_trans_stop_device(priv->trans);
952 
953 	/* Set num_aux_in_flight must be done after the transport is stopped */
954 	atomic_set(&priv->num_aux_in_flight, 0);
955 
956 	/* Clear out all status bits but a few that are stable across reset */
957 	priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
958 				STATUS_RF_KILL_HW |
959 			test_bit(STATUS_FW_ERROR, &priv->status) <<
960 				STATUS_FW_ERROR |
961 			test_bit(STATUS_EXIT_PENDING, &priv->status) <<
962 				STATUS_EXIT_PENDING;
963 
964 	dev_kfree_skb(priv->beacon_skb);
965 	priv->beacon_skb = NULL;
966 }
967 
968 /*****************************************************************************
969  *
970  * Workqueue callbacks
971  *
972  *****************************************************************************/
973 
974 static void iwl_bg_run_time_calib_work(struct work_struct *work)
975 {
976 	struct iwl_priv *priv = container_of(work, struct iwl_priv,
977 			run_time_calib_work);
978 
979 	mutex_lock(&priv->mutex);
980 
981 	if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
982 	    test_bit(STATUS_SCANNING, &priv->status)) {
983 		mutex_unlock(&priv->mutex);
984 		return;
985 	}
986 
987 	if (priv->start_calib) {
988 		iwl_chain_noise_calibration(priv);
989 		iwl_sensitivity_calibration(priv);
990 	}
991 
992 	mutex_unlock(&priv->mutex);
993 }
994 
995 void iwlagn_prepare_restart(struct iwl_priv *priv)
996 {
997 	bool bt_full_concurrent;
998 	u8 bt_ci_compliance;
999 	u8 bt_load;
1000 	u8 bt_status;
1001 	bool bt_is_sco;
1002 	int i;
1003 
1004 	lockdep_assert_held(&priv->mutex);
1005 
1006 	priv->is_open = 0;
1007 
1008 	/*
1009 	 * __iwl_down() will clear the BT status variables,
1010 	 * which is correct, but when we restart we really
1011 	 * want to keep them so restore them afterwards.
1012 	 *
1013 	 * The restart process will later pick them up and
1014 	 * re-configure the hw when we reconfigure the BT
1015 	 * command.
1016 	 */
1017 	bt_full_concurrent = priv->bt_full_concurrent;
1018 	bt_ci_compliance = priv->bt_ci_compliance;
1019 	bt_load = priv->bt_traffic_load;
1020 	bt_status = priv->bt_status;
1021 	bt_is_sco = priv->bt_is_sco;
1022 
1023 	iwl_down(priv);
1024 
1025 	priv->bt_full_concurrent = bt_full_concurrent;
1026 	priv->bt_ci_compliance = bt_ci_compliance;
1027 	priv->bt_traffic_load = bt_load;
1028 	priv->bt_status = bt_status;
1029 	priv->bt_is_sco = bt_is_sco;
1030 
1031 	/* reset aggregation queues */
1032 	for (i = IWLAGN_FIRST_AMPDU_QUEUE; i < IWL_MAX_HW_QUEUES; i++)
1033 		priv->queue_to_mac80211[i] = IWL_INVALID_MAC80211_QUEUE;
1034 	/* and stop counts */
1035 	for (i = 0; i < IWL_MAX_HW_QUEUES; i++)
1036 		atomic_set(&priv->queue_stop_count[i], 0);
1037 
1038 	memset(priv->agg_q_alloc, 0, sizeof(priv->agg_q_alloc));
1039 }
1040 
1041 static void iwl_bg_restart(struct work_struct *data)
1042 {
1043 	struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
1044 
1045 	if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1046 		return;
1047 
1048 	if (test_and_clear_bit(STATUS_FW_ERROR, &priv->status)) {
1049 		mutex_lock(&priv->mutex);
1050 		iwlagn_prepare_restart(priv);
1051 		mutex_unlock(&priv->mutex);
1052 		iwl_cancel_deferred_work(priv);
1053 		if (priv->mac80211_registered)
1054 			ieee80211_restart_hw(priv->hw);
1055 		else
1056 			IWL_ERR(priv,
1057 				"Cannot request restart before registering with mac80211\n");
1058 	} else {
1059 		WARN_ON(1);
1060 	}
1061 }
1062 
1063 /*****************************************************************************
1064  *
1065  * driver setup and teardown
1066  *
1067  *****************************************************************************/
1068 
1069 static void iwl_setup_deferred_work(struct iwl_priv *priv)
1070 {
1071 	priv->workqueue = alloc_ordered_workqueue(DRV_NAME, 0);
1072 
1073 	INIT_WORK(&priv->restart, iwl_bg_restart);
1074 	INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
1075 	INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
1076 	INIT_WORK(&priv->tx_flush, iwl_bg_tx_flush);
1077 	INIT_WORK(&priv->bt_full_concurrency, iwl_bg_bt_full_concurrency);
1078 	INIT_WORK(&priv->bt_runtime_config, iwl_bg_bt_runtime_config);
1079 
1080 	iwl_setup_scan_deferred_work(priv);
1081 
1082 	if (priv->lib->bt_params)
1083 		iwlagn_bt_setup_deferred_work(priv);
1084 
1085 	timer_setup(&priv->statistics_periodic, iwl_bg_statistics_periodic, 0);
1086 
1087 	timer_setup(&priv->ucode_trace, iwl_bg_ucode_trace, 0);
1088 }
1089 
1090 void iwl_cancel_deferred_work(struct iwl_priv *priv)
1091 {
1092 	if (priv->lib->bt_params)
1093 		iwlagn_bt_cancel_deferred_work(priv);
1094 
1095 	cancel_work_sync(&priv->run_time_calib_work);
1096 	cancel_work_sync(&priv->beacon_update);
1097 
1098 	iwl_cancel_scan_deferred_work(priv);
1099 
1100 	cancel_work_sync(&priv->bt_full_concurrency);
1101 	cancel_work_sync(&priv->bt_runtime_config);
1102 
1103 	del_timer_sync(&priv->statistics_periodic);
1104 	del_timer_sync(&priv->ucode_trace);
1105 }
1106 
1107 static int iwl_init_drv(struct iwl_priv *priv)
1108 {
1109 	spin_lock_init(&priv->sta_lock);
1110 
1111 	mutex_init(&priv->mutex);
1112 
1113 	INIT_LIST_HEAD(&priv->calib_results);
1114 
1115 	priv->band = NL80211_BAND_2GHZ;
1116 
1117 	priv->plcp_delta_threshold = priv->lib->plcp_delta_threshold;
1118 
1119 	priv->iw_mode = NL80211_IFTYPE_STATION;
1120 	priv->current_ht_config.smps = IEEE80211_SMPS_STATIC;
1121 	priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF;
1122 	priv->agg_tids_count = 0;
1123 
1124 	priv->rx_statistics_jiffies = jiffies;
1125 
1126 	/* Choose which receivers/antennas to use */
1127 	iwlagn_set_rxon_chain(priv, &priv->contexts[IWL_RXON_CTX_BSS]);
1128 
1129 	iwl_init_scan_params(priv);
1130 
1131 	/* init bt coex */
1132 	if (priv->lib->bt_params &&
1133 	    priv->lib->bt_params->advanced_bt_coexist) {
1134 		priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
1135 		priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
1136 		priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
1137 		priv->bt_on_thresh = BT_ON_THRESHOLD_DEF;
1138 		priv->bt_duration = BT_DURATION_LIMIT_DEF;
1139 		priv->dynamic_frag_thresh = BT_FRAG_THRESHOLD_DEF;
1140 	}
1141 
1142 	return 0;
1143 }
1144 
1145 static void iwl_uninit_drv(struct iwl_priv *priv)
1146 {
1147 	kfree(priv->scan_cmd);
1148 	kfree(priv->beacon_cmd);
1149 	kfree(rcu_dereference_raw(priv->noa_data));
1150 	iwl_calib_free_results(priv);
1151 #ifdef CONFIG_IWLWIFI_DEBUGFS
1152 	kfree(priv->wowlan_sram);
1153 #endif
1154 }
1155 
1156 static void iwl_set_hw_params(struct iwl_priv *priv)
1157 {
1158 	if (priv->cfg->ht_params)
1159 		priv->hw_params.use_rts_for_aggregation =
1160 			priv->cfg->ht_params->use_rts_for_aggregation;
1161 
1162 	/* Device-specific setup */
1163 	priv->lib->set_hw_params(priv);
1164 }
1165 
1166 
1167 
1168 /* show what optional capabilities we have */
1169 static void iwl_option_config(struct iwl_priv *priv)
1170 {
1171 #ifdef CONFIG_IWLWIFI_DEBUG
1172 	IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUG enabled\n");
1173 #else
1174 	IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUG disabled\n");
1175 #endif
1176 
1177 #ifdef CONFIG_IWLWIFI_DEBUGFS
1178 	IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUGFS enabled\n");
1179 #else
1180 	IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUGFS disabled\n");
1181 #endif
1182 
1183 #ifdef CONFIG_IWLWIFI_DEVICE_TRACING
1184 	IWL_INFO(priv, "CONFIG_IWLWIFI_DEVICE_TRACING enabled\n");
1185 #else
1186 	IWL_INFO(priv, "CONFIG_IWLWIFI_DEVICE_TRACING disabled\n");
1187 #endif
1188 }
1189 
1190 static int iwl_eeprom_init_hw_params(struct iwl_priv *priv)
1191 {
1192 	struct iwl_nvm_data *data = priv->nvm_data;
1193 
1194 	if (data->sku_cap_11n_enable &&
1195 	    !priv->cfg->ht_params) {
1196 		IWL_ERR(priv, "Invalid 11n configuration\n");
1197 		return -EINVAL;
1198 	}
1199 
1200 	if (!data->sku_cap_11n_enable && !data->sku_cap_band_24ghz_enable &&
1201 	    !data->sku_cap_band_52ghz_enable) {
1202 		IWL_ERR(priv, "Invalid device sku\n");
1203 		return -EINVAL;
1204 	}
1205 
1206 	IWL_DEBUG_INFO(priv,
1207 		       "Device SKU: 24GHz %s %s, 52GHz %s %s, 11.n %s %s\n",
1208 		       data->sku_cap_band_24ghz_enable ? "" : "NOT", "enabled",
1209 		       data->sku_cap_band_52ghz_enable ? "" : "NOT", "enabled",
1210 		       data->sku_cap_11n_enable ? "" : "NOT", "enabled");
1211 
1212 	priv->hw_params.tx_chains_num =
1213 		num_of_ant(data->valid_tx_ant);
1214 	if (priv->cfg->rx_with_siso_diversity)
1215 		priv->hw_params.rx_chains_num = 1;
1216 	else
1217 		priv->hw_params.rx_chains_num =
1218 			num_of_ant(data->valid_rx_ant);
1219 
1220 	IWL_DEBUG_INFO(priv, "Valid Tx ant: 0x%X, Valid Rx ant: 0x%X\n",
1221 		       data->valid_tx_ant,
1222 		       data->valid_rx_ant);
1223 
1224 	return 0;
1225 }
1226 
1227 static int iwl_nvm_check_version(struct iwl_nvm_data *data,
1228 				 struct iwl_trans *trans)
1229 {
1230 	if (data->nvm_version >= trans->cfg->nvm_ver ||
1231 	    data->calib_version >= trans->cfg->nvm_calib_ver) {
1232 		IWL_DEBUG_INFO(trans, "device EEPROM VER=0x%x, CALIB=0x%x\n",
1233 			       data->nvm_version, data->calib_version);
1234 		return 0;
1235 	}
1236 
1237 	IWL_ERR(trans,
1238 		"Unsupported (too old) EEPROM VER=0x%x < 0x%x CALIB=0x%x < 0x%x\n",
1239 		data->nvm_version, trans->cfg->nvm_ver,
1240 		data->calib_version,  trans->cfg->nvm_calib_ver);
1241 	return -EINVAL;
1242 }
1243 
1244 static struct iwl_op_mode *iwl_op_mode_dvm_start(struct iwl_trans *trans,
1245 						 const struct iwl_cfg *cfg,
1246 						 const struct iwl_fw *fw,
1247 						 struct dentry *dbgfs_dir)
1248 {
1249 	struct iwl_priv *priv;
1250 	struct ieee80211_hw *hw;
1251 	struct iwl_op_mode *op_mode;
1252 	u16 num_mac;
1253 	u32 ucode_flags;
1254 	struct iwl_trans_config trans_cfg = {};
1255 	static const u8 no_reclaim_cmds[] = {
1256 		REPLY_RX_PHY_CMD,
1257 		REPLY_RX_MPDU_CMD,
1258 		REPLY_COMPRESSED_BA,
1259 		STATISTICS_NOTIFICATION,
1260 		REPLY_TX,
1261 	};
1262 	int i;
1263 
1264 	/************************
1265 	 * 1. Allocating HW data
1266 	 ************************/
1267 	hw = iwl_alloc_all();
1268 	if (!hw) {
1269 		pr_err("%s: Cannot allocate network device\n", cfg->name);
1270 		goto out;
1271 	}
1272 
1273 	op_mode = hw->priv;
1274 	op_mode->ops = &iwl_dvm_ops;
1275 	priv = IWL_OP_MODE_GET_DVM(op_mode);
1276 	priv->trans = trans;
1277 	priv->dev = trans->dev;
1278 	priv->cfg = cfg;
1279 	priv->fw = fw;
1280 
1281 	switch (priv->cfg->device_family) {
1282 	case IWL_DEVICE_FAMILY_1000:
1283 	case IWL_DEVICE_FAMILY_100:
1284 		priv->lib = &iwl_dvm_1000_cfg;
1285 		break;
1286 	case IWL_DEVICE_FAMILY_2000:
1287 		priv->lib = &iwl_dvm_2000_cfg;
1288 		break;
1289 	case IWL_DEVICE_FAMILY_105:
1290 		priv->lib = &iwl_dvm_105_cfg;
1291 		break;
1292 	case IWL_DEVICE_FAMILY_2030:
1293 	case IWL_DEVICE_FAMILY_135:
1294 		priv->lib = &iwl_dvm_2030_cfg;
1295 		break;
1296 	case IWL_DEVICE_FAMILY_5000:
1297 		priv->lib = &iwl_dvm_5000_cfg;
1298 		break;
1299 	case IWL_DEVICE_FAMILY_5150:
1300 		priv->lib = &iwl_dvm_5150_cfg;
1301 		break;
1302 	case IWL_DEVICE_FAMILY_6000:
1303 	case IWL_DEVICE_FAMILY_6000i:
1304 		priv->lib = &iwl_dvm_6000_cfg;
1305 		break;
1306 	case IWL_DEVICE_FAMILY_6005:
1307 		priv->lib = &iwl_dvm_6005_cfg;
1308 		break;
1309 	case IWL_DEVICE_FAMILY_6050:
1310 	case IWL_DEVICE_FAMILY_6150:
1311 		priv->lib = &iwl_dvm_6050_cfg;
1312 		break;
1313 	case IWL_DEVICE_FAMILY_6030:
1314 		priv->lib = &iwl_dvm_6030_cfg;
1315 		break;
1316 	default:
1317 		break;
1318 	}
1319 
1320 	if (WARN_ON(!priv->lib))
1321 		goto out_free_hw;
1322 
1323 	/*
1324 	 * Populate the state variables that the transport layer needs
1325 	 * to know about.
1326 	 */
1327 	trans_cfg.op_mode = op_mode;
1328 	trans_cfg.no_reclaim_cmds = no_reclaim_cmds;
1329 	trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds);
1330 
1331 	switch (iwlwifi_mod_params.amsdu_size) {
1332 	case IWL_AMSDU_DEF:
1333 	case IWL_AMSDU_4K:
1334 		trans_cfg.rx_buf_size = IWL_AMSDU_4K;
1335 		break;
1336 	case IWL_AMSDU_8K:
1337 		trans_cfg.rx_buf_size = IWL_AMSDU_8K;
1338 		break;
1339 	case IWL_AMSDU_12K:
1340 	default:
1341 		trans_cfg.rx_buf_size = IWL_AMSDU_4K;
1342 		pr_err("Unsupported amsdu_size: %d\n",
1343 		       iwlwifi_mod_params.amsdu_size);
1344 	}
1345 
1346 	trans_cfg.cmd_q_wdg_timeout = IWL_WATCHDOG_DISABLED;
1347 
1348 	trans_cfg.command_groups = iwl_dvm_groups;
1349 	trans_cfg.command_groups_size = ARRAY_SIZE(iwl_dvm_groups);
1350 
1351 	trans_cfg.cmd_fifo = IWLAGN_CMD_FIFO_NUM;
1352 	trans_cfg.cb_data_offs = offsetof(struct ieee80211_tx_info,
1353 					  driver_data[2]);
1354 
1355 	WARN_ON(sizeof(priv->transport_queue_stop) * BITS_PER_BYTE <
1356 		priv->cfg->base_params->num_of_queues);
1357 
1358 	ucode_flags = fw->ucode_capa.flags;
1359 
1360 	if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN) {
1361 		priv->sta_key_max_num = STA_KEY_MAX_NUM_PAN;
1362 		trans_cfg.cmd_queue = IWL_IPAN_CMD_QUEUE_NUM;
1363 	} else {
1364 		priv->sta_key_max_num = STA_KEY_MAX_NUM;
1365 		trans_cfg.cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM;
1366 	}
1367 
1368 	/* Configure transport layer */
1369 	iwl_trans_configure(priv->trans, &trans_cfg);
1370 
1371 	trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD;
1372 	trans->rx_mpdu_cmd_hdr_size = sizeof(struct iwl_rx_mpdu_res_start);
1373 	trans->command_groups = trans_cfg.command_groups;
1374 	trans->command_groups_size = trans_cfg.command_groups_size;
1375 
1376 	/* At this point both hw and priv are allocated. */
1377 
1378 	SET_IEEE80211_DEV(priv->hw, priv->trans->dev);
1379 
1380 	iwl_option_config(priv);
1381 
1382 	IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
1383 
1384 	/* is antenna coupling more than 35dB ? */
1385 	priv->bt_ant_couple_ok =
1386 		(iwlwifi_mod_params.antenna_coupling >
1387 			IWL_BT_ANTENNA_COUPLING_THRESHOLD) ?
1388 			true : false;
1389 
1390 	/* bt channel inhibition enabled*/
1391 	priv->bt_ch_announce = true;
1392 	IWL_DEBUG_INFO(priv, "BT channel inhibition is %s\n",
1393 		       (priv->bt_ch_announce) ? "On" : "Off");
1394 
1395 	/* these spin locks will be used in apm_ops.init and EEPROM access
1396 	 * we should init now
1397 	 */
1398 	spin_lock_init(&priv->statistics.lock);
1399 
1400 	/***********************
1401 	 * 2. Read REV register
1402 	 ***********************/
1403 	IWL_INFO(priv, "Detected %s, REV=0x%X\n",
1404 		priv->cfg->name, priv->trans->hw_rev);
1405 
1406 	if (iwl_trans_start_hw(priv->trans))
1407 		goto out_free_hw;
1408 
1409 	/* Read the EEPROM */
1410 	if (iwl_read_eeprom(priv->trans, &priv->eeprom_blob,
1411 			    &priv->eeprom_blob_size)) {
1412 		IWL_ERR(priv, "Unable to init EEPROM\n");
1413 		goto out_free_hw;
1414 	}
1415 
1416 	/* Reset chip to save power until we load uCode during "up". */
1417 	iwl_trans_stop_device(priv->trans);
1418 
1419 	priv->nvm_data = iwl_parse_eeprom_data(priv->trans->dev, priv->cfg,
1420 						  priv->eeprom_blob,
1421 						  priv->eeprom_blob_size);
1422 	if (!priv->nvm_data)
1423 		goto out_free_eeprom_blob;
1424 
1425 	if (iwl_nvm_check_version(priv->nvm_data, priv->trans))
1426 		goto out_free_eeprom;
1427 
1428 	if (iwl_eeprom_init_hw_params(priv))
1429 		goto out_free_eeprom;
1430 
1431 	/* extract MAC Address */
1432 	memcpy(priv->addresses[0].addr, priv->nvm_data->hw_addr, ETH_ALEN);
1433 	IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->addresses[0].addr);
1434 	priv->hw->wiphy->addresses = priv->addresses;
1435 	priv->hw->wiphy->n_addresses = 1;
1436 	num_mac = priv->nvm_data->n_hw_addrs;
1437 	if (num_mac > 1) {
1438 		memcpy(priv->addresses[1].addr, priv->addresses[0].addr,
1439 		       ETH_ALEN);
1440 		priv->addresses[1].addr[5]++;
1441 		priv->hw->wiphy->n_addresses++;
1442 	}
1443 
1444 	/************************
1445 	 * 4. Setup HW constants
1446 	 ************************/
1447 	iwl_set_hw_params(priv);
1448 
1449 	if (!(priv->nvm_data->sku_cap_ipan_enable)) {
1450 		IWL_DEBUG_INFO(priv, "Your EEPROM disabled PAN\n");
1451 		ucode_flags &= ~IWL_UCODE_TLV_FLAGS_PAN;
1452 		/*
1453 		 * if not PAN, then don't support P2P -- might be a uCode
1454 		 * packaging bug or due to the eeprom check above
1455 		 */
1456 		priv->sta_key_max_num = STA_KEY_MAX_NUM;
1457 		trans_cfg.cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM;
1458 
1459 		/* Configure transport layer again*/
1460 		iwl_trans_configure(priv->trans, &trans_cfg);
1461 	}
1462 
1463 	/*******************
1464 	 * 5. Setup priv
1465 	 *******************/
1466 	for (i = 0; i < IWL_MAX_HW_QUEUES; i++) {
1467 		priv->queue_to_mac80211[i] = IWL_INVALID_MAC80211_QUEUE;
1468 		if (i < IWLAGN_FIRST_AMPDU_QUEUE &&
1469 		    i != IWL_DEFAULT_CMD_QUEUE_NUM &&
1470 		    i != IWL_IPAN_CMD_QUEUE_NUM)
1471 			priv->queue_to_mac80211[i] = i;
1472 		atomic_set(&priv->queue_stop_count[i], 0);
1473 	}
1474 
1475 	if (iwl_init_drv(priv))
1476 		goto out_free_eeprom;
1477 
1478 	/* At this point both hw and priv are initialized. */
1479 
1480 	/********************
1481 	 * 6. Setup services
1482 	 ********************/
1483 	iwl_setup_deferred_work(priv);
1484 	iwl_setup_rx_handlers(priv);
1485 
1486 	iwl_power_initialize(priv);
1487 	iwl_tt_initialize(priv);
1488 
1489 	snprintf(priv->hw->wiphy->fw_version,
1490 		 sizeof(priv->hw->wiphy->fw_version),
1491 		 "%s", fw->fw_version);
1492 
1493 	priv->new_scan_threshold_behaviour =
1494 		!!(ucode_flags & IWL_UCODE_TLV_FLAGS_NEWSCAN);
1495 
1496 	priv->phy_calib_chain_noise_reset_cmd =
1497 		fw->ucode_capa.standard_phy_calibration_size;
1498 	priv->phy_calib_chain_noise_gain_cmd =
1499 		fw->ucode_capa.standard_phy_calibration_size + 1;
1500 
1501 	/* initialize all valid contexts */
1502 	iwl_init_context(priv, ucode_flags);
1503 
1504 	/**************************************************
1505 	 * This is still part of probe() in a sense...
1506 	 *
1507 	 * 7. Setup and register with mac80211 and debugfs
1508 	 **************************************************/
1509 	if (iwlagn_mac_setup_register(priv, &fw->ucode_capa))
1510 		goto out_destroy_workqueue;
1511 
1512 	iwl_dbgfs_register(priv, dbgfs_dir);
1513 
1514 	return op_mode;
1515 
1516 out_destroy_workqueue:
1517 	iwl_tt_exit(priv);
1518 	iwl_cancel_deferred_work(priv);
1519 	destroy_workqueue(priv->workqueue);
1520 	priv->workqueue = NULL;
1521 	iwl_uninit_drv(priv);
1522 out_free_eeprom_blob:
1523 	kfree(priv->eeprom_blob);
1524 out_free_eeprom:
1525 	kfree(priv->nvm_data);
1526 out_free_hw:
1527 	ieee80211_free_hw(priv->hw);
1528 out:
1529 	op_mode = NULL;
1530 	return op_mode;
1531 }
1532 
1533 static void iwl_op_mode_dvm_stop(struct iwl_op_mode *op_mode)
1534 {
1535 	struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1536 
1537 	IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
1538 
1539 	iwlagn_mac_unregister(priv);
1540 
1541 	iwl_tt_exit(priv);
1542 
1543 	kfree(priv->eeprom_blob);
1544 	kfree(priv->nvm_data);
1545 
1546 	/*netif_stop_queue(dev); */
1547 	flush_workqueue(priv->workqueue);
1548 
1549 	/* ieee80211_unregister_hw calls iwlagn_mac_stop, which flushes
1550 	 * priv->workqueue... so we can't take down the workqueue
1551 	 * until now... */
1552 	destroy_workqueue(priv->workqueue);
1553 	priv->workqueue = NULL;
1554 
1555 	iwl_uninit_drv(priv);
1556 
1557 	dev_kfree_skb(priv->beacon_skb);
1558 
1559 	iwl_trans_op_mode_leave(priv->trans);
1560 	ieee80211_free_hw(priv->hw);
1561 }
1562 
1563 static const char * const desc_lookup_text[] = {
1564 	"OK",
1565 	"FAIL",
1566 	"BAD_PARAM",
1567 	"BAD_CHECKSUM",
1568 	"NMI_INTERRUPT_WDG",
1569 	"SYSASSERT",
1570 	"FATAL_ERROR",
1571 	"BAD_COMMAND",
1572 	"HW_ERROR_TUNE_LOCK",
1573 	"HW_ERROR_TEMPERATURE",
1574 	"ILLEGAL_CHAN_FREQ",
1575 	"VCC_NOT_STABLE",
1576 	"FH_ERROR",
1577 	"NMI_INTERRUPT_HOST",
1578 	"NMI_INTERRUPT_ACTION_PT",
1579 	"NMI_INTERRUPT_UNKNOWN",
1580 	"UCODE_VERSION_MISMATCH",
1581 	"HW_ERROR_ABS_LOCK",
1582 	"HW_ERROR_CAL_LOCK_FAIL",
1583 	"NMI_INTERRUPT_INST_ACTION_PT",
1584 	"NMI_INTERRUPT_DATA_ACTION_PT",
1585 	"NMI_TRM_HW_ER",
1586 	"NMI_INTERRUPT_TRM",
1587 	"NMI_INTERRUPT_BREAK_POINT",
1588 	"DEBUG_0",
1589 	"DEBUG_1",
1590 	"DEBUG_2",
1591 	"DEBUG_3",
1592 };
1593 
1594 static struct { char *name; u8 num; } advanced_lookup[] = {
1595 	{ "NMI_INTERRUPT_WDG", 0x34 },
1596 	{ "SYSASSERT", 0x35 },
1597 	{ "UCODE_VERSION_MISMATCH", 0x37 },
1598 	{ "BAD_COMMAND", 0x38 },
1599 	{ "NMI_INTERRUPT_DATA_ACTION_PT", 0x3C },
1600 	{ "FATAL_ERROR", 0x3D },
1601 	{ "NMI_TRM_HW_ERR", 0x46 },
1602 	{ "NMI_INTERRUPT_TRM", 0x4C },
1603 	{ "NMI_INTERRUPT_BREAK_POINT", 0x54 },
1604 	{ "NMI_INTERRUPT_WDG_RXF_FULL", 0x5C },
1605 	{ "NMI_INTERRUPT_WDG_NO_RBD_RXF_FULL", 0x64 },
1606 	{ "NMI_INTERRUPT_HOST", 0x66 },
1607 	{ "NMI_INTERRUPT_ACTION_PT", 0x7C },
1608 	{ "NMI_INTERRUPT_UNKNOWN", 0x84 },
1609 	{ "NMI_INTERRUPT_INST_ACTION_PT", 0x86 },
1610 	{ "ADVANCED_SYSASSERT", 0 },
1611 };
1612 
1613 static const char *desc_lookup(u32 num)
1614 {
1615 	int i;
1616 	int max = ARRAY_SIZE(desc_lookup_text);
1617 
1618 	if (num < max)
1619 		return desc_lookup_text[num];
1620 
1621 	max = ARRAY_SIZE(advanced_lookup) - 1;
1622 	for (i = 0; i < max; i++) {
1623 		if (advanced_lookup[i].num == num)
1624 			break;
1625 	}
1626 	return advanced_lookup[i].name;
1627 }
1628 
1629 #define ERROR_START_OFFSET  (1 * sizeof(u32))
1630 #define ERROR_ELEM_SIZE     (7 * sizeof(u32))
1631 
1632 static void iwl_dump_nic_error_log(struct iwl_priv *priv)
1633 {
1634 	struct iwl_trans *trans = priv->trans;
1635 	u32 base;
1636 	struct iwl_error_event_table table;
1637 
1638 	base = priv->device_pointers.error_event_table;
1639 	if (priv->cur_ucode == IWL_UCODE_INIT) {
1640 		if (!base)
1641 			base = priv->fw->init_errlog_ptr;
1642 	} else {
1643 		if (!base)
1644 			base = priv->fw->inst_errlog_ptr;
1645 	}
1646 
1647 	if (!iwlagn_hw_valid_rtc_data_addr(base)) {
1648 		IWL_ERR(priv,
1649 			"Not valid error log pointer 0x%08X for %s uCode\n",
1650 			base,
1651 			(priv->cur_ucode == IWL_UCODE_INIT)
1652 					? "Init" : "RT");
1653 		return;
1654 	}
1655 
1656 	/*TODO: Update dbgfs with ISR error stats obtained below */
1657 	iwl_trans_read_mem_bytes(trans, base, &table, sizeof(table));
1658 
1659 	if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) {
1660 		IWL_ERR(trans, "Start IWL Error Log Dump:\n");
1661 		IWL_ERR(trans, "Status: 0x%08lX, count: %d\n",
1662 			priv->status, table.valid);
1663 	}
1664 
1665 	IWL_ERR(priv, "0x%08X | %-28s\n", table.error_id,
1666 		desc_lookup(table.error_id));
1667 	IWL_ERR(priv, "0x%08X | uPc\n", table.pc);
1668 	IWL_ERR(priv, "0x%08X | branchlink1\n", table.blink1);
1669 	IWL_ERR(priv, "0x%08X | branchlink2\n", table.blink2);
1670 	IWL_ERR(priv, "0x%08X | interruptlink1\n", table.ilink1);
1671 	IWL_ERR(priv, "0x%08X | interruptlink2\n", table.ilink2);
1672 	IWL_ERR(priv, "0x%08X | data1\n", table.data1);
1673 	IWL_ERR(priv, "0x%08X | data2\n", table.data2);
1674 	IWL_ERR(priv, "0x%08X | line\n", table.line);
1675 	IWL_ERR(priv, "0x%08X | beacon time\n", table.bcon_time);
1676 	IWL_ERR(priv, "0x%08X | tsf low\n", table.tsf_low);
1677 	IWL_ERR(priv, "0x%08X | tsf hi\n", table.tsf_hi);
1678 	IWL_ERR(priv, "0x%08X | time gp1\n", table.gp1);
1679 	IWL_ERR(priv, "0x%08X | time gp2\n", table.gp2);
1680 	IWL_ERR(priv, "0x%08X | time gp3\n", table.gp3);
1681 	IWL_ERR(priv, "0x%08X | uCode version\n", table.ucode_ver);
1682 	IWL_ERR(priv, "0x%08X | hw version\n", table.hw_ver);
1683 	IWL_ERR(priv, "0x%08X | board version\n", table.brd_ver);
1684 	IWL_ERR(priv, "0x%08X | hcmd\n", table.hcmd);
1685 	IWL_ERR(priv, "0x%08X | isr0\n", table.isr0);
1686 	IWL_ERR(priv, "0x%08X | isr1\n", table.isr1);
1687 	IWL_ERR(priv, "0x%08X | isr2\n", table.isr2);
1688 	IWL_ERR(priv, "0x%08X | isr3\n", table.isr3);
1689 	IWL_ERR(priv, "0x%08X | isr4\n", table.isr4);
1690 	IWL_ERR(priv, "0x%08X | isr_pref\n", table.isr_pref);
1691 	IWL_ERR(priv, "0x%08X | wait_event\n", table.wait_event);
1692 	IWL_ERR(priv, "0x%08X | l2p_control\n", table.l2p_control);
1693 	IWL_ERR(priv, "0x%08X | l2p_duration\n", table.l2p_duration);
1694 	IWL_ERR(priv, "0x%08X | l2p_mhvalid\n", table.l2p_mhvalid);
1695 	IWL_ERR(priv, "0x%08X | l2p_addr_match\n", table.l2p_addr_match);
1696 	IWL_ERR(priv, "0x%08X | lmpm_pmg_sel\n", table.lmpm_pmg_sel);
1697 	IWL_ERR(priv, "0x%08X | timestamp\n", table.u_timestamp);
1698 	IWL_ERR(priv, "0x%08X | flow_handler\n", table.flow_handler);
1699 }
1700 
1701 #define EVENT_START_OFFSET  (4 * sizeof(u32))
1702 
1703 /**
1704  * iwl_print_event_log - Dump error event log to syslog
1705  *
1706  */
1707 static int iwl_print_event_log(struct iwl_priv *priv, u32 start_idx,
1708 			       u32 num_events, u32 mode,
1709 			       int pos, char **buf, size_t bufsz)
1710 {
1711 	u32 i;
1712 	u32 base;       /* SRAM byte address of event log header */
1713 	u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
1714 	u32 ptr;        /* SRAM byte address of log data */
1715 	u32 ev, time, data; /* event log data */
1716 	unsigned long reg_flags;
1717 
1718 	struct iwl_trans *trans = priv->trans;
1719 
1720 	if (num_events == 0)
1721 		return pos;
1722 
1723 	base = priv->device_pointers.log_event_table;
1724 	if (priv->cur_ucode == IWL_UCODE_INIT) {
1725 		if (!base)
1726 			base = priv->fw->init_evtlog_ptr;
1727 	} else {
1728 		if (!base)
1729 			base = priv->fw->inst_evtlog_ptr;
1730 	}
1731 
1732 	if (mode == 0)
1733 		event_size = 2 * sizeof(u32);
1734 	else
1735 		event_size = 3 * sizeof(u32);
1736 
1737 	ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
1738 
1739 	/* Make sure device is powered up for SRAM reads */
1740 	if (!iwl_trans_grab_nic_access(trans, &reg_flags))
1741 		return pos;
1742 
1743 	/* Set starting address; reads will auto-increment */
1744 	iwl_write32(trans, HBUS_TARG_MEM_RADDR, ptr);
1745 
1746 	/* "time" is actually "data" for mode 0 (no timestamp).
1747 	* place event id # at far right for easier visual parsing. */
1748 	for (i = 0; i < num_events; i++) {
1749 		ev = iwl_read32(trans, HBUS_TARG_MEM_RDAT);
1750 		time = iwl_read32(trans, HBUS_TARG_MEM_RDAT);
1751 		if (mode == 0) {
1752 			/* data, ev */
1753 			if (bufsz) {
1754 				pos += scnprintf(*buf + pos, bufsz - pos,
1755 						"EVT_LOG:0x%08x:%04u\n",
1756 						time, ev);
1757 			} else {
1758 				trace_iwlwifi_dev_ucode_event(trans->dev, 0,
1759 					time, ev);
1760 				IWL_ERR(priv, "EVT_LOG:0x%08x:%04u\n",
1761 					time, ev);
1762 			}
1763 		} else {
1764 			data = iwl_read32(trans, HBUS_TARG_MEM_RDAT);
1765 			if (bufsz) {
1766 				pos += scnprintf(*buf + pos, bufsz - pos,
1767 						"EVT_LOGT:%010u:0x%08x:%04u\n",
1768 						 time, data, ev);
1769 			} else {
1770 				IWL_ERR(priv, "EVT_LOGT:%010u:0x%08x:%04u\n",
1771 					time, data, ev);
1772 				trace_iwlwifi_dev_ucode_event(trans->dev, time,
1773 					data, ev);
1774 			}
1775 		}
1776 	}
1777 
1778 	/* Allow device to power down */
1779 	iwl_trans_release_nic_access(trans, &reg_flags);
1780 	return pos;
1781 }
1782 
1783 /**
1784  * iwl_print_last_event_logs - Dump the newest # of event log to syslog
1785  */
1786 static int iwl_print_last_event_logs(struct iwl_priv *priv, u32 capacity,
1787 				    u32 num_wraps, u32 next_entry,
1788 				    u32 size, u32 mode,
1789 				    int pos, char **buf, size_t bufsz)
1790 {
1791 	/*
1792 	 * display the newest DEFAULT_LOG_ENTRIES entries
1793 	 * i.e the entries just before the next ont that uCode would fill.
1794 	 */
1795 	if (num_wraps) {
1796 		if (next_entry < size) {
1797 			pos = iwl_print_event_log(priv,
1798 						capacity - (size - next_entry),
1799 						size - next_entry, mode,
1800 						pos, buf, bufsz);
1801 			pos = iwl_print_event_log(priv, 0,
1802 						  next_entry, mode,
1803 						  pos, buf, bufsz);
1804 		} else
1805 			pos = iwl_print_event_log(priv, next_entry - size,
1806 						  size, mode, pos, buf, bufsz);
1807 	} else {
1808 		if (next_entry < size) {
1809 			pos = iwl_print_event_log(priv, 0, next_entry,
1810 						  mode, pos, buf, bufsz);
1811 		} else {
1812 			pos = iwl_print_event_log(priv, next_entry - size,
1813 						  size, mode, pos, buf, bufsz);
1814 		}
1815 	}
1816 	return pos;
1817 }
1818 
1819 #define DEFAULT_DUMP_EVENT_LOG_ENTRIES (20)
1820 
1821 int iwl_dump_nic_event_log(struct iwl_priv *priv, bool full_log,
1822 			    char **buf)
1823 {
1824 	u32 base;       /* SRAM byte address of event log header */
1825 	u32 capacity;   /* event log capacity in # entries */
1826 	u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
1827 	u32 num_wraps;  /* # times uCode wrapped to top of log */
1828 	u32 next_entry; /* index of next entry to be written by uCode */
1829 	u32 size;       /* # entries that we'll print */
1830 	u32 logsize;
1831 	int pos = 0;
1832 	size_t bufsz = 0;
1833 	struct iwl_trans *trans = priv->trans;
1834 
1835 	base = priv->device_pointers.log_event_table;
1836 	if (priv->cur_ucode == IWL_UCODE_INIT) {
1837 		logsize = priv->fw->init_evtlog_size;
1838 		if (!base)
1839 			base = priv->fw->init_evtlog_ptr;
1840 	} else {
1841 		logsize = priv->fw->inst_evtlog_size;
1842 		if (!base)
1843 			base = priv->fw->inst_evtlog_ptr;
1844 	}
1845 
1846 	if (!iwlagn_hw_valid_rtc_data_addr(base)) {
1847 		IWL_ERR(priv,
1848 			"Invalid event log pointer 0x%08X for %s uCode\n",
1849 			base,
1850 			(priv->cur_ucode == IWL_UCODE_INIT)
1851 					? "Init" : "RT");
1852 		return -EINVAL;
1853 	}
1854 
1855 	/* event log header */
1856 	capacity = iwl_trans_read_mem32(trans, base);
1857 	mode = iwl_trans_read_mem32(trans, base + (1 * sizeof(u32)));
1858 	num_wraps = iwl_trans_read_mem32(trans, base + (2 * sizeof(u32)));
1859 	next_entry = iwl_trans_read_mem32(trans, base + (3 * sizeof(u32)));
1860 
1861 	if (capacity > logsize) {
1862 		IWL_ERR(priv, "Log capacity %d is bogus, limit to %d "
1863 			"entries\n", capacity, logsize);
1864 		capacity = logsize;
1865 	}
1866 
1867 	if (next_entry > logsize) {
1868 		IWL_ERR(priv, "Log write index %d is bogus, limit to %d\n",
1869 			next_entry, logsize);
1870 		next_entry = logsize;
1871 	}
1872 
1873 	size = num_wraps ? capacity : next_entry;
1874 
1875 	/* bail out if nothing in log */
1876 	if (size == 0) {
1877 		IWL_ERR(trans, "Start IWL Event Log Dump: nothing in log\n");
1878 		return pos;
1879 	}
1880 
1881 	if (!(iwl_have_debug_level(IWL_DL_FW)) && !full_log)
1882 		size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES)
1883 			? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size;
1884 	IWL_ERR(priv, "Start IWL Event Log Dump: display last %u entries\n",
1885 		size);
1886 
1887 #ifdef CONFIG_IWLWIFI_DEBUG
1888 	if (buf) {
1889 		if (full_log)
1890 			bufsz = capacity * 48;
1891 		else
1892 			bufsz = size * 48;
1893 		*buf = kmalloc(bufsz, GFP_KERNEL);
1894 		if (!*buf)
1895 			return -ENOMEM;
1896 	}
1897 	if (iwl_have_debug_level(IWL_DL_FW) || full_log) {
1898 		/*
1899 		 * if uCode has wrapped back to top of log,
1900 		 * start at the oldest entry,
1901 		 * i.e the next one that uCode would fill.
1902 		 */
1903 		if (num_wraps)
1904 			pos = iwl_print_event_log(priv, next_entry,
1905 						capacity - next_entry, mode,
1906 						pos, buf, bufsz);
1907 		/* (then/else) start at top of log */
1908 		pos = iwl_print_event_log(priv, 0,
1909 					  next_entry, mode, pos, buf, bufsz);
1910 	} else
1911 		pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
1912 						next_entry, size, mode,
1913 						pos, buf, bufsz);
1914 #else
1915 	pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
1916 					next_entry, size, mode,
1917 					pos, buf, bufsz);
1918 #endif
1919 	return pos;
1920 }
1921 
1922 static void iwlagn_fw_error(struct iwl_priv *priv, bool ondemand)
1923 {
1924 	unsigned int reload_msec;
1925 	unsigned long reload_jiffies;
1926 
1927 	if (iwl_have_debug_level(IWL_DL_FW))
1928 		iwl_print_rx_config_cmd(priv, IWL_RXON_CTX_BSS);
1929 
1930 	/* uCode is no longer loaded. */
1931 	priv->ucode_loaded = false;
1932 
1933 	/* Set the FW error flag -- cleared on iwl_down */
1934 	set_bit(STATUS_FW_ERROR, &priv->status);
1935 
1936 	iwl_abort_notification_waits(&priv->notif_wait);
1937 
1938 	/* Keep the restart process from trying to send host
1939 	 * commands by clearing the ready bit */
1940 	clear_bit(STATUS_READY, &priv->status);
1941 
1942 	if (!ondemand) {
1943 		/*
1944 		 * If firmware keep reloading, then it indicate something
1945 		 * serious wrong and firmware having problem to recover
1946 		 * from it. Instead of keep trying which will fill the syslog
1947 		 * and hang the system, let's just stop it
1948 		 */
1949 		reload_jiffies = jiffies;
1950 		reload_msec = jiffies_to_msecs((long) reload_jiffies -
1951 					(long) priv->reload_jiffies);
1952 		priv->reload_jiffies = reload_jiffies;
1953 		if (reload_msec <= IWL_MIN_RELOAD_DURATION) {
1954 			priv->reload_count++;
1955 			if (priv->reload_count >= IWL_MAX_CONTINUE_RELOAD_CNT) {
1956 				IWL_ERR(priv, "BUG_ON, Stop restarting\n");
1957 				return;
1958 			}
1959 		} else
1960 			priv->reload_count = 0;
1961 	}
1962 
1963 	if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1964 		if (iwlwifi_mod_params.fw_restart) {
1965 			IWL_DEBUG_FW(priv,
1966 				     "Restarting adapter due to uCode error.\n");
1967 			queue_work(priv->workqueue, &priv->restart);
1968 		} else
1969 			IWL_DEBUG_FW(priv,
1970 				     "Detected FW error, but not restarting\n");
1971 	}
1972 }
1973 
1974 static void iwl_nic_error(struct iwl_op_mode *op_mode)
1975 {
1976 	struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1977 
1978 	IWL_ERR(priv, "Loaded firmware version: %s\n",
1979 		priv->fw->fw_version);
1980 
1981 	iwl_dump_nic_error_log(priv);
1982 	iwl_dump_nic_event_log(priv, false, NULL);
1983 
1984 	iwlagn_fw_error(priv, false);
1985 }
1986 
1987 static void iwl_cmd_queue_full(struct iwl_op_mode *op_mode)
1988 {
1989 	struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1990 
1991 	if (!iwl_check_for_ct_kill(priv)) {
1992 		IWL_ERR(priv, "Restarting adapter queue is full\n");
1993 		iwlagn_fw_error(priv, false);
1994 	}
1995 }
1996 
1997 #define EEPROM_RF_CONFIG_TYPE_MAX      0x3
1998 
1999 static void iwl_nic_config(struct iwl_op_mode *op_mode)
2000 {
2001 	struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2002 
2003 	/* SKU Control */
2004 	iwl_trans_set_bits_mask(priv->trans, CSR_HW_IF_CONFIG_REG,
2005 				CSR_HW_IF_CONFIG_REG_MSK_MAC_DASH |
2006 				CSR_HW_IF_CONFIG_REG_MSK_MAC_STEP,
2007 				(CSR_HW_REV_STEP(priv->trans->hw_rev) <<
2008 					CSR_HW_IF_CONFIG_REG_POS_MAC_STEP) |
2009 				(CSR_HW_REV_DASH(priv->trans->hw_rev) <<
2010 					CSR_HW_IF_CONFIG_REG_POS_MAC_DASH));
2011 
2012 	/* write radio config values to register */
2013 	if (priv->nvm_data->radio_cfg_type <= EEPROM_RF_CONFIG_TYPE_MAX) {
2014 		u32 reg_val =
2015 			priv->nvm_data->radio_cfg_type <<
2016 				CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE |
2017 			priv->nvm_data->radio_cfg_step <<
2018 				CSR_HW_IF_CONFIG_REG_POS_PHY_STEP |
2019 			priv->nvm_data->radio_cfg_dash <<
2020 				CSR_HW_IF_CONFIG_REG_POS_PHY_DASH;
2021 
2022 		iwl_trans_set_bits_mask(priv->trans, CSR_HW_IF_CONFIG_REG,
2023 					CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE |
2024 					CSR_HW_IF_CONFIG_REG_MSK_PHY_STEP |
2025 					CSR_HW_IF_CONFIG_REG_MSK_PHY_DASH,
2026 					reg_val);
2027 
2028 		IWL_INFO(priv, "Radio type=0x%x-0x%x-0x%x\n",
2029 			 priv->nvm_data->radio_cfg_type,
2030 			 priv->nvm_data->radio_cfg_step,
2031 			 priv->nvm_data->radio_cfg_dash);
2032 	} else {
2033 		WARN_ON(1);
2034 	}
2035 
2036 	/* set CSR_HW_CONFIG_REG for uCode use */
2037 	iwl_set_bit(priv->trans, CSR_HW_IF_CONFIG_REG,
2038 		    CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI |
2039 		    CSR_HW_IF_CONFIG_REG_BIT_MAC_SI);
2040 
2041 	/* W/A : NIC is stuck in a reset state after Early PCIe power off
2042 	 * (PCIe power is lost before PERST# is asserted),
2043 	 * causing ME FW to lose ownership and not being able to obtain it back.
2044 	 */
2045 	iwl_set_bits_mask_prph(priv->trans, APMG_PS_CTRL_REG,
2046 			       APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS,
2047 			       ~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS);
2048 
2049 	if (priv->lib->nic_config)
2050 		priv->lib->nic_config(priv);
2051 }
2052 
2053 static void iwl_wimax_active(struct iwl_op_mode *op_mode)
2054 {
2055 	struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2056 
2057 	clear_bit(STATUS_READY, &priv->status);
2058 	IWL_ERR(priv, "RF is used by WiMAX\n");
2059 }
2060 
2061 static void iwl_stop_sw_queue(struct iwl_op_mode *op_mode, int queue)
2062 {
2063 	struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2064 	int mq = priv->queue_to_mac80211[queue];
2065 
2066 	if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE))
2067 		return;
2068 
2069 	if (atomic_inc_return(&priv->queue_stop_count[mq]) > 1) {
2070 		IWL_DEBUG_TX_QUEUES(priv,
2071 			"queue %d (mac80211 %d) already stopped\n",
2072 			queue, mq);
2073 		return;
2074 	}
2075 
2076 	set_bit(mq, &priv->transport_queue_stop);
2077 	ieee80211_stop_queue(priv->hw, mq);
2078 }
2079 
2080 static void iwl_wake_sw_queue(struct iwl_op_mode *op_mode, int queue)
2081 {
2082 	struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2083 	int mq = priv->queue_to_mac80211[queue];
2084 
2085 	if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE))
2086 		return;
2087 
2088 	if (atomic_dec_return(&priv->queue_stop_count[mq]) > 0) {
2089 		IWL_DEBUG_TX_QUEUES(priv,
2090 			"queue %d (mac80211 %d) already awake\n",
2091 			queue, mq);
2092 		return;
2093 	}
2094 
2095 	clear_bit(mq, &priv->transport_queue_stop);
2096 
2097 	if (!priv->passive_no_rx)
2098 		ieee80211_wake_queue(priv->hw, mq);
2099 }
2100 
2101 void iwlagn_lift_passive_no_rx(struct iwl_priv *priv)
2102 {
2103 	int mq;
2104 
2105 	if (!priv->passive_no_rx)
2106 		return;
2107 
2108 	for (mq = 0; mq < IWLAGN_FIRST_AMPDU_QUEUE; mq++) {
2109 		if (!test_bit(mq, &priv->transport_queue_stop)) {
2110 			IWL_DEBUG_TX_QUEUES(priv, "Wake queue %d\n", mq);
2111 			ieee80211_wake_queue(priv->hw, mq);
2112 		} else {
2113 			IWL_DEBUG_TX_QUEUES(priv, "Don't wake queue %d\n", mq);
2114 		}
2115 	}
2116 
2117 	priv->passive_no_rx = false;
2118 }
2119 
2120 static void iwl_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb)
2121 {
2122 	struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2123 	struct ieee80211_tx_info *info;
2124 
2125 	info = IEEE80211_SKB_CB(skb);
2126 	iwl_trans_free_tx_cmd(priv->trans, info->driver_data[1]);
2127 	ieee80211_free_txskb(priv->hw, skb);
2128 }
2129 
2130 static bool iwl_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state)
2131 {
2132 	struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2133 
2134 	if (state)
2135 		set_bit(STATUS_RF_KILL_HW, &priv->status);
2136 	else
2137 		clear_bit(STATUS_RF_KILL_HW, &priv->status);
2138 
2139 	wiphy_rfkill_set_hw_state(priv->hw->wiphy, state);
2140 
2141 	return false;
2142 }
2143 
2144 static const struct iwl_op_mode_ops iwl_dvm_ops = {
2145 	.start = iwl_op_mode_dvm_start,
2146 	.stop = iwl_op_mode_dvm_stop,
2147 	.rx = iwl_rx_dispatch,
2148 	.queue_full = iwl_stop_sw_queue,
2149 	.queue_not_full = iwl_wake_sw_queue,
2150 	.hw_rf_kill = iwl_set_hw_rfkill_state,
2151 	.free_skb = iwl_free_skb,
2152 	.nic_error = iwl_nic_error,
2153 	.cmd_queue_full = iwl_cmd_queue_full,
2154 	.nic_config = iwl_nic_config,
2155 	.wimax_active = iwl_wimax_active,
2156 };
2157 
2158 /*****************************************************************************
2159  *
2160  * driver and module entry point
2161  *
2162  *****************************************************************************/
2163 static int __init iwl_init(void)
2164 {
2165 
2166 	int ret;
2167 
2168 	ret = iwlagn_rate_control_register();
2169 	if (ret) {
2170 		pr_err("Unable to register rate control algorithm: %d\n", ret);
2171 		return ret;
2172 	}
2173 
2174 	ret = iwl_opmode_register("iwldvm", &iwl_dvm_ops);
2175 	if (ret) {
2176 		pr_err("Unable to register op_mode: %d\n", ret);
2177 		iwlagn_rate_control_unregister();
2178 	}
2179 
2180 	return ret;
2181 }
2182 module_init(iwl_init);
2183 
2184 static void __exit iwl_exit(void)
2185 {
2186 	iwl_opmode_deregister("iwldvm");
2187 	iwlagn_rate_control_unregister();
2188 }
2189 module_exit(iwl_exit);
2190