1 /******************************************************************************
2  *
3  * This file is provided under a dual BSD/GPLv2 license.  When using or
4  * redistributing this file, you may do so under either license.
5  *
6  * GPL LICENSE SUMMARY
7  *
8  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
9  * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
10  * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
11  * Copyright(c) 2018 - 2019 Intel Corporation
12  *
13  * This program is free software; you can redistribute it and/or modify
14  * it under the terms of version 2 of the GNU General Public License as
15  * published by the Free Software Foundation.
16  *
17  * This program is distributed in the hope that it will be useful, but
18  * WITHOUT ANY WARRANTY; without even the implied warranty of
19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
20  * General Public License for more details.
21  *
22  * The full GNU General Public License is included in this distribution
23  * in the file called COPYING.
24  *
25  * Contact Information:
26  *  Intel Linux Wireless <linuxwifi@intel.com>
27  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
28  *
29  * BSD LICENSE
30  *
31  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
32  * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
33  * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
34  * Copyright(c) 2018 - 2019 Intel Corporation
35  * All rights reserved.
36  *
37  * Redistribution and use in source and binary forms, with or without
38  * modification, are permitted provided that the following conditions
39  * are met:
40  *
41  *  * Redistributions of source code must retain the above copyright
42  *    notice, this list of conditions and the following disclaimer.
43  *  * Redistributions in binary form must reproduce the above copyright
44  *    notice, this list of conditions and the following disclaimer in
45  *    the documentation and/or other materials provided with the
46  *    distribution.
47  *  * Neither the name Intel Corporation nor the names of its
48  *    contributors may be used to endorse or promote products derived
49  *    from this software without specific prior written permission.
50  *
51  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
52  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
53  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
54  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
55  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
56  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
57  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
58  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
59  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
60  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
61  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
62  *
63  *****************************************************************************/
64 #include <linux/module.h>
65 #include <linux/vmalloc.h>
66 #include <net/mac80211.h>
67 
68 #include "fw/notif-wait.h"
69 #include "iwl-trans.h"
70 #include "iwl-op-mode.h"
71 #include "fw/img.h"
72 #include "iwl-debug.h"
73 #include "iwl-drv.h"
74 #include "iwl-modparams.h"
75 #include "mvm.h"
76 #include "iwl-phy-db.h"
77 #include "iwl-eeprom-parse.h"
78 #include "iwl-csr.h"
79 #include "iwl-io.h"
80 #include "iwl-prph.h"
81 #include "rs.h"
82 #include "fw/api/scan.h"
83 #include "time-event.h"
84 #include "fw-api.h"
85 #include "fw/acpi.h"
86 
87 #define DRV_DESCRIPTION	"The new Intel(R) wireless AGN driver for Linux"
88 MODULE_DESCRIPTION(DRV_DESCRIPTION);
89 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
90 MODULE_LICENSE("GPL");
91 
92 static const struct iwl_op_mode_ops iwl_mvm_ops;
93 static const struct iwl_op_mode_ops iwl_mvm_ops_mq;
94 
95 struct iwl_mvm_mod_params iwlmvm_mod_params = {
96 	.power_scheme = IWL_POWER_SCHEME_BPS,
97 	.tfd_q_hang_detect = true
98 	/* rest of fields are 0 by default */
99 };
100 
101 module_param_named(init_dbg, iwlmvm_mod_params.init_dbg, bool, 0444);
102 MODULE_PARM_DESC(init_dbg,
103 		 "set to true to debug an ASSERT in INIT fw (default: false");
104 module_param_named(power_scheme, iwlmvm_mod_params.power_scheme, int, 0444);
105 MODULE_PARM_DESC(power_scheme,
106 		 "power management scheme: 1-active, 2-balanced, 3-low power, default: 2");
107 module_param_named(tfd_q_hang_detect, iwlmvm_mod_params.tfd_q_hang_detect,
108 		   bool, 0444);
109 MODULE_PARM_DESC(tfd_q_hang_detect,
110 		 "TFD queues hang detection (default: true");
111 
112 /*
113  * module init and exit functions
114  */
115 static int __init iwl_mvm_init(void)
116 {
117 	int ret;
118 
119 	ret = iwl_mvm_rate_control_register();
120 	if (ret) {
121 		pr_err("Unable to register rate control algorithm: %d\n", ret);
122 		return ret;
123 	}
124 
125 	ret = iwl_opmode_register("iwlmvm", &iwl_mvm_ops);
126 	if (ret)
127 		pr_err("Unable to register MVM op_mode: %d\n", ret);
128 
129 	return ret;
130 }
131 module_init(iwl_mvm_init);
132 
133 static void __exit iwl_mvm_exit(void)
134 {
135 	iwl_opmode_deregister("iwlmvm");
136 	iwl_mvm_rate_control_unregister();
137 }
138 module_exit(iwl_mvm_exit);
139 
140 static void iwl_mvm_nic_config(struct iwl_op_mode *op_mode)
141 {
142 	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
143 	u8 radio_cfg_type, radio_cfg_step, radio_cfg_dash;
144 	u32 reg_val = 0;
145 	u32 phy_config = iwl_mvm_get_phy_config(mvm);
146 
147 	radio_cfg_type = (phy_config & FW_PHY_CFG_RADIO_TYPE) >>
148 			 FW_PHY_CFG_RADIO_TYPE_POS;
149 	radio_cfg_step = (phy_config & FW_PHY_CFG_RADIO_STEP) >>
150 			 FW_PHY_CFG_RADIO_STEP_POS;
151 	radio_cfg_dash = (phy_config & FW_PHY_CFG_RADIO_DASH) >>
152 			 FW_PHY_CFG_RADIO_DASH_POS;
153 
154 	/* SKU control */
155 	reg_val |= CSR_HW_REV_STEP(mvm->trans->hw_rev) <<
156 				CSR_HW_IF_CONFIG_REG_POS_MAC_STEP;
157 	reg_val |= CSR_HW_REV_DASH(mvm->trans->hw_rev) <<
158 				CSR_HW_IF_CONFIG_REG_POS_MAC_DASH;
159 
160 	/* radio configuration */
161 	reg_val |= radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE;
162 	reg_val |= radio_cfg_step << CSR_HW_IF_CONFIG_REG_POS_PHY_STEP;
163 	reg_val |= radio_cfg_dash << CSR_HW_IF_CONFIG_REG_POS_PHY_DASH;
164 
165 	WARN_ON((radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE) &
166 		 ~CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE);
167 
168 	/*
169 	 * TODO: Bits 7-8 of CSR in 8000 HW family and higher set the ADC
170 	 * sampling, and shouldn't be set to any non-zero value.
171 	 * The same is supposed to be true of the other HW, but unsetting
172 	 * them (such as the 7260) causes automatic tests to fail on seemingly
173 	 * unrelated errors. Need to further investigate this, but for now
174 	 * we'll separate cases.
175 	 */
176 	if (mvm->trans->cfg->device_family < IWL_DEVICE_FAMILY_8000)
177 		reg_val |= CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI;
178 
179 	if (iwl_fw_dbg_is_d3_debug_enabled(&mvm->fwrt))
180 		reg_val |= CSR_HW_IF_CONFIG_REG_D3_DEBUG;
181 
182 	iwl_trans_set_bits_mask(mvm->trans, CSR_HW_IF_CONFIG_REG,
183 				CSR_HW_IF_CONFIG_REG_MSK_MAC_DASH |
184 				CSR_HW_IF_CONFIG_REG_MSK_MAC_STEP |
185 				CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE |
186 				CSR_HW_IF_CONFIG_REG_MSK_PHY_STEP |
187 				CSR_HW_IF_CONFIG_REG_MSK_PHY_DASH |
188 				CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI |
189 				CSR_HW_IF_CONFIG_REG_BIT_MAC_SI   |
190 				CSR_HW_IF_CONFIG_REG_D3_DEBUG,
191 				reg_val);
192 
193 	IWL_DEBUG_INFO(mvm, "Radio type=0x%x-0x%x-0x%x\n", radio_cfg_type,
194 		       radio_cfg_step, radio_cfg_dash);
195 
196 	/*
197 	 * W/A : NIC is stuck in a reset state after Early PCIe power off
198 	 * (PCIe power is lost before PERST# is asserted), causing ME FW
199 	 * to lose ownership and not being able to obtain it back.
200 	 */
201 	if (!mvm->trans->cfg->apmg_not_supported)
202 		iwl_set_bits_mask_prph(mvm->trans, APMG_PS_CTRL_REG,
203 				       APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS,
204 				       ~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS);
205 }
206 
207 /**
208  * enum iwl_rx_handler_context context for Rx handler
209  * @RX_HANDLER_SYNC : this means that it will be called in the Rx path
210  *	which can't acquire mvm->mutex.
211  * @RX_HANDLER_ASYNC_LOCKED : If the handler needs to hold mvm->mutex
212  *	(and only in this case!), it should be set as ASYNC. In that case,
213  *	it will be called from a worker with mvm->mutex held.
214  * @RX_HANDLER_ASYNC_UNLOCKED : in case the handler needs to lock the
215  *	mutex itself, it will be called from a worker without mvm->mutex held.
216  */
217 enum iwl_rx_handler_context {
218 	RX_HANDLER_SYNC,
219 	RX_HANDLER_ASYNC_LOCKED,
220 	RX_HANDLER_ASYNC_UNLOCKED,
221 };
222 
223 /**
224  * struct iwl_rx_handlers handler for FW notification
225  * @cmd_id: command id
226  * @context: see &iwl_rx_handler_context
227  * @fn: the function is called when notification is received
228  */
229 struct iwl_rx_handlers {
230 	u16 cmd_id;
231 	enum iwl_rx_handler_context context;
232 	void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb);
233 };
234 
235 #define RX_HANDLER(_cmd_id, _fn, _context)	\
236 	{ .cmd_id = _cmd_id, .fn = _fn, .context = _context }
237 #define RX_HANDLER_GRP(_grp, _cmd, _fn, _context)	\
238 	{ .cmd_id = WIDE_ID(_grp, _cmd), .fn = _fn, .context = _context }
239 
240 /*
241  * Handlers for fw notifications
242  * Convention: RX_HANDLER(CMD_NAME, iwl_mvm_rx_CMD_NAME
243  * This list should be in order of frequency for performance purposes.
244  *
245  * The handler can be one from three contexts, see &iwl_rx_handler_context
246  */
247 static const struct iwl_rx_handlers iwl_mvm_rx_handlers[] = {
248 	RX_HANDLER(TX_CMD, iwl_mvm_rx_tx_cmd, RX_HANDLER_SYNC),
249 	RX_HANDLER(BA_NOTIF, iwl_mvm_rx_ba_notif, RX_HANDLER_SYNC),
250 
251 	RX_HANDLER_GRP(DATA_PATH_GROUP, TLC_MNG_UPDATE_NOTIF,
252 		       iwl_mvm_tlc_update_notif, RX_HANDLER_SYNC),
253 
254 	RX_HANDLER(BT_PROFILE_NOTIFICATION, iwl_mvm_rx_bt_coex_notif,
255 		   RX_HANDLER_ASYNC_LOCKED),
256 	RX_HANDLER(BEACON_NOTIFICATION, iwl_mvm_rx_beacon_notif,
257 		   RX_HANDLER_ASYNC_LOCKED),
258 	RX_HANDLER(STATISTICS_NOTIFICATION, iwl_mvm_rx_statistics,
259 		   RX_HANDLER_ASYNC_LOCKED),
260 
261 	RX_HANDLER(BA_WINDOW_STATUS_NOTIFICATION_ID,
262 		   iwl_mvm_window_status_notif, RX_HANDLER_SYNC),
263 
264 	RX_HANDLER(TIME_EVENT_NOTIFICATION, iwl_mvm_rx_time_event_notif,
265 		   RX_HANDLER_SYNC),
266 	RX_HANDLER(MCC_CHUB_UPDATE_CMD, iwl_mvm_rx_chub_update_mcc,
267 		   RX_HANDLER_ASYNC_LOCKED),
268 
269 	RX_HANDLER(EOSP_NOTIFICATION, iwl_mvm_rx_eosp_notif, RX_HANDLER_SYNC),
270 
271 	RX_HANDLER(SCAN_ITERATION_COMPLETE,
272 		   iwl_mvm_rx_lmac_scan_iter_complete_notif, RX_HANDLER_SYNC),
273 	RX_HANDLER(SCAN_OFFLOAD_COMPLETE,
274 		   iwl_mvm_rx_lmac_scan_complete_notif,
275 		   RX_HANDLER_ASYNC_LOCKED),
276 	RX_HANDLER(MATCH_FOUND_NOTIFICATION, iwl_mvm_rx_scan_match_found,
277 		   RX_HANDLER_SYNC),
278 	RX_HANDLER(SCAN_COMPLETE_UMAC, iwl_mvm_rx_umac_scan_complete_notif,
279 		   RX_HANDLER_ASYNC_LOCKED),
280 	RX_HANDLER(SCAN_ITERATION_COMPLETE_UMAC,
281 		   iwl_mvm_rx_umac_scan_iter_complete_notif, RX_HANDLER_SYNC),
282 
283 	RX_HANDLER(CARD_STATE_NOTIFICATION, iwl_mvm_rx_card_state_notif,
284 		   RX_HANDLER_SYNC),
285 
286 	RX_HANDLER(MISSED_BEACONS_NOTIFICATION, iwl_mvm_rx_missed_beacons_notif,
287 		   RX_HANDLER_SYNC),
288 
289 	RX_HANDLER(REPLY_ERROR, iwl_mvm_rx_fw_error, RX_HANDLER_SYNC),
290 	RX_HANDLER(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION,
291 		   iwl_mvm_power_uapsd_misbehaving_ap_notif, RX_HANDLER_SYNC),
292 	RX_HANDLER(DTS_MEASUREMENT_NOTIFICATION, iwl_mvm_temp_notif,
293 		   RX_HANDLER_ASYNC_LOCKED),
294 	RX_HANDLER_GRP(PHY_OPS_GROUP, DTS_MEASUREMENT_NOTIF_WIDE,
295 		       iwl_mvm_temp_notif, RX_HANDLER_ASYNC_UNLOCKED),
296 	RX_HANDLER_GRP(PHY_OPS_GROUP, CT_KILL_NOTIFICATION,
297 		       iwl_mvm_ct_kill_notif, RX_HANDLER_SYNC),
298 
299 	RX_HANDLER(TDLS_CHANNEL_SWITCH_NOTIFICATION, iwl_mvm_rx_tdls_notif,
300 		   RX_HANDLER_ASYNC_LOCKED),
301 	RX_HANDLER(MFUART_LOAD_NOTIFICATION, iwl_mvm_rx_mfuart_notif,
302 		   RX_HANDLER_SYNC),
303 	RX_HANDLER_GRP(LOCATION_GROUP, TOF_RESPONDER_STATS,
304 		       iwl_mvm_ftm_responder_stats, RX_HANDLER_ASYNC_LOCKED),
305 
306 	RX_HANDLER_GRP(LOCATION_GROUP, TOF_RANGE_RESPONSE_NOTIF,
307 		       iwl_mvm_ftm_range_resp, RX_HANDLER_ASYNC_LOCKED),
308 	RX_HANDLER_GRP(LOCATION_GROUP, TOF_LC_NOTIF,
309 		       iwl_mvm_ftm_lc_notif, RX_HANDLER_ASYNC_LOCKED),
310 
311 	RX_HANDLER_GRP(DEBUG_GROUP, MFU_ASSERT_DUMP_NTF,
312 		       iwl_mvm_mfu_assert_dump_notif, RX_HANDLER_SYNC),
313 	RX_HANDLER_GRP(PROT_OFFLOAD_GROUP, STORED_BEACON_NTF,
314 		       iwl_mvm_rx_stored_beacon_notif, RX_HANDLER_SYNC),
315 	RX_HANDLER_GRP(DATA_PATH_GROUP, MU_GROUP_MGMT_NOTIF,
316 		       iwl_mvm_mu_mimo_grp_notif, RX_HANDLER_SYNC),
317 	RX_HANDLER_GRP(DATA_PATH_GROUP, STA_PM_NOTIF,
318 		       iwl_mvm_sta_pm_notif, RX_HANDLER_SYNC),
319 };
320 #undef RX_HANDLER
321 #undef RX_HANDLER_GRP
322 
323 /* Please keep this array *SORTED* by hex value.
324  * Access is done through binary search
325  */
326 static const struct iwl_hcmd_names iwl_mvm_legacy_names[] = {
327 	HCMD_NAME(MVM_ALIVE),
328 	HCMD_NAME(REPLY_ERROR),
329 	HCMD_NAME(ECHO_CMD),
330 	HCMD_NAME(INIT_COMPLETE_NOTIF),
331 	HCMD_NAME(PHY_CONTEXT_CMD),
332 	HCMD_NAME(DBG_CFG),
333 	HCMD_NAME(SCAN_CFG_CMD),
334 	HCMD_NAME(SCAN_REQ_UMAC),
335 	HCMD_NAME(SCAN_ABORT_UMAC),
336 	HCMD_NAME(SCAN_COMPLETE_UMAC),
337 	HCMD_NAME(BA_WINDOW_STATUS_NOTIFICATION_ID),
338 	HCMD_NAME(ADD_STA_KEY),
339 	HCMD_NAME(ADD_STA),
340 	HCMD_NAME(REMOVE_STA),
341 	HCMD_NAME(FW_GET_ITEM_CMD),
342 	HCMD_NAME(TX_CMD),
343 	HCMD_NAME(SCD_QUEUE_CFG),
344 	HCMD_NAME(TXPATH_FLUSH),
345 	HCMD_NAME(MGMT_MCAST_KEY),
346 	HCMD_NAME(WEP_KEY),
347 	HCMD_NAME(SHARED_MEM_CFG),
348 	HCMD_NAME(TDLS_CHANNEL_SWITCH_CMD),
349 	HCMD_NAME(MAC_CONTEXT_CMD),
350 	HCMD_NAME(TIME_EVENT_CMD),
351 	HCMD_NAME(TIME_EVENT_NOTIFICATION),
352 	HCMD_NAME(BINDING_CONTEXT_CMD),
353 	HCMD_NAME(TIME_QUOTA_CMD),
354 	HCMD_NAME(NON_QOS_TX_COUNTER_CMD),
355 	HCMD_NAME(LEDS_CMD),
356 	HCMD_NAME(LQ_CMD),
357 	HCMD_NAME(FW_PAGING_BLOCK_CMD),
358 	HCMD_NAME(SCAN_OFFLOAD_REQUEST_CMD),
359 	HCMD_NAME(SCAN_OFFLOAD_ABORT_CMD),
360 	HCMD_NAME(HOT_SPOT_CMD),
361 	HCMD_NAME(SCAN_OFFLOAD_PROFILES_QUERY_CMD),
362 	HCMD_NAME(BT_COEX_UPDATE_REDUCED_TXP),
363 	HCMD_NAME(BT_COEX_CI),
364 	HCMD_NAME(PHY_CONFIGURATION_CMD),
365 	HCMD_NAME(CALIB_RES_NOTIF_PHY_DB),
366 	HCMD_NAME(PHY_DB_CMD),
367 	HCMD_NAME(SCAN_OFFLOAD_COMPLETE),
368 	HCMD_NAME(SCAN_OFFLOAD_UPDATE_PROFILES_CMD),
369 	HCMD_NAME(POWER_TABLE_CMD),
370 	HCMD_NAME(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION),
371 	HCMD_NAME(REPLY_THERMAL_MNG_BACKOFF),
372 	HCMD_NAME(DC2DC_CONFIG_CMD),
373 	HCMD_NAME(NVM_ACCESS_CMD),
374 	HCMD_NAME(BEACON_NOTIFICATION),
375 	HCMD_NAME(BEACON_TEMPLATE_CMD),
376 	HCMD_NAME(TX_ANT_CONFIGURATION_CMD),
377 	HCMD_NAME(BT_CONFIG),
378 	HCMD_NAME(STATISTICS_CMD),
379 	HCMD_NAME(STATISTICS_NOTIFICATION),
380 	HCMD_NAME(EOSP_NOTIFICATION),
381 	HCMD_NAME(REDUCE_TX_POWER_CMD),
382 	HCMD_NAME(CARD_STATE_NOTIFICATION),
383 	HCMD_NAME(MISSED_BEACONS_NOTIFICATION),
384 	HCMD_NAME(TDLS_CONFIG_CMD),
385 	HCMD_NAME(MAC_PM_POWER_TABLE),
386 	HCMD_NAME(TDLS_CHANNEL_SWITCH_NOTIFICATION),
387 	HCMD_NAME(MFUART_LOAD_NOTIFICATION),
388 	HCMD_NAME(RSS_CONFIG_CMD),
389 	HCMD_NAME(SCAN_ITERATION_COMPLETE_UMAC),
390 	HCMD_NAME(REPLY_RX_PHY_CMD),
391 	HCMD_NAME(REPLY_RX_MPDU_CMD),
392 	HCMD_NAME(FRAME_RELEASE),
393 	HCMD_NAME(BA_NOTIF),
394 	HCMD_NAME(MCC_UPDATE_CMD),
395 	HCMD_NAME(MCC_CHUB_UPDATE_CMD),
396 	HCMD_NAME(MARKER_CMD),
397 	HCMD_NAME(BT_PROFILE_NOTIFICATION),
398 	HCMD_NAME(BCAST_FILTER_CMD),
399 	HCMD_NAME(MCAST_FILTER_CMD),
400 	HCMD_NAME(REPLY_SF_CFG_CMD),
401 	HCMD_NAME(REPLY_BEACON_FILTERING_CMD),
402 	HCMD_NAME(D3_CONFIG_CMD),
403 	HCMD_NAME(PROT_OFFLOAD_CONFIG_CMD),
404 	HCMD_NAME(OFFLOADS_QUERY_CMD),
405 	HCMD_NAME(REMOTE_WAKE_CONFIG_CMD),
406 	HCMD_NAME(MATCH_FOUND_NOTIFICATION),
407 	HCMD_NAME(DTS_MEASUREMENT_NOTIFICATION),
408 	HCMD_NAME(WOWLAN_PATTERNS),
409 	HCMD_NAME(WOWLAN_CONFIGURATION),
410 	HCMD_NAME(WOWLAN_TSC_RSC_PARAM),
411 	HCMD_NAME(WOWLAN_TKIP_PARAM),
412 	HCMD_NAME(WOWLAN_KEK_KCK_MATERIAL),
413 	HCMD_NAME(WOWLAN_GET_STATUSES),
414 	HCMD_NAME(SCAN_ITERATION_COMPLETE),
415 	HCMD_NAME(D0I3_END_CMD),
416 	HCMD_NAME(LTR_CONFIG),
417 };
418 
419 /* Please keep this array *SORTED* by hex value.
420  * Access is done through binary search
421  */
422 static const struct iwl_hcmd_names iwl_mvm_system_names[] = {
423 	HCMD_NAME(SHARED_MEM_CFG_CMD),
424 	HCMD_NAME(INIT_EXTENDED_CFG_CMD),
425 	HCMD_NAME(FW_ERROR_RECOVERY_CMD),
426 };
427 
428 /* Please keep this array *SORTED* by hex value.
429  * Access is done through binary search
430  */
431 static const struct iwl_hcmd_names iwl_mvm_mac_conf_names[] = {
432 	HCMD_NAME(CHANNEL_SWITCH_TIME_EVENT_CMD),
433 	HCMD_NAME(CHANNEL_SWITCH_NOA_NOTIF),
434 };
435 
436 /* Please keep this array *SORTED* by hex value.
437  * Access is done through binary search
438  */
439 static const struct iwl_hcmd_names iwl_mvm_phy_names[] = {
440 	HCMD_NAME(CMD_DTS_MEASUREMENT_TRIGGER_WIDE),
441 	HCMD_NAME(CTDP_CONFIG_CMD),
442 	HCMD_NAME(TEMP_REPORTING_THRESHOLDS_CMD),
443 	HCMD_NAME(GEO_TX_POWER_LIMIT),
444 	HCMD_NAME(CT_KILL_NOTIFICATION),
445 	HCMD_NAME(DTS_MEASUREMENT_NOTIF_WIDE),
446 };
447 
448 /* Please keep this array *SORTED* by hex value.
449  * Access is done through binary search
450  */
451 static const struct iwl_hcmd_names iwl_mvm_data_path_names[] = {
452 	HCMD_NAME(DQA_ENABLE_CMD),
453 	HCMD_NAME(UPDATE_MU_GROUPS_CMD),
454 	HCMD_NAME(TRIGGER_RX_QUEUES_NOTIF_CMD),
455 	HCMD_NAME(STA_HE_CTXT_CMD),
456 	HCMD_NAME(RFH_QUEUE_CONFIG_CMD),
457 	HCMD_NAME(TLC_MNG_CONFIG_CMD),
458 	HCMD_NAME(CHEST_COLLECTOR_FILTER_CONFIG_CMD),
459 	HCMD_NAME(STA_PM_NOTIF),
460 	HCMD_NAME(MU_GROUP_MGMT_NOTIF),
461 	HCMD_NAME(RX_QUEUES_NOTIFICATION),
462 };
463 
464 /* Please keep this array *SORTED* by hex value.
465  * Access is done through binary search
466  */
467 static const struct iwl_hcmd_names iwl_mvm_debug_names[] = {
468 	HCMD_NAME(MFU_ASSERT_DUMP_NTF),
469 };
470 
471 /* Please keep this array *SORTED* by hex value.
472  * Access is done through binary search
473  */
474 static const struct iwl_hcmd_names iwl_mvm_location_names[] = {
475 	HCMD_NAME(TOF_RANGE_REQ_CMD),
476 	HCMD_NAME(TOF_CONFIG_CMD),
477 	HCMD_NAME(TOF_RANGE_ABORT_CMD),
478 	HCMD_NAME(TOF_RANGE_REQ_EXT_CMD),
479 	HCMD_NAME(TOF_RESPONDER_CONFIG_CMD),
480 	HCMD_NAME(TOF_RESPONDER_DYN_CONFIG_CMD),
481 	HCMD_NAME(TOF_LC_NOTIF),
482 	HCMD_NAME(TOF_RESPONDER_STATS),
483 	HCMD_NAME(TOF_MCSI_DEBUG_NOTIF),
484 	HCMD_NAME(TOF_RANGE_RESPONSE_NOTIF),
485 };
486 
487 /* Please keep this array *SORTED* by hex value.
488  * Access is done through binary search
489  */
490 static const struct iwl_hcmd_names iwl_mvm_prot_offload_names[] = {
491 	HCMD_NAME(STORED_BEACON_NTF),
492 };
493 
494 /* Please keep this array *SORTED* by hex value.
495  * Access is done through binary search
496  */
497 static const struct iwl_hcmd_names iwl_mvm_regulatory_and_nvm_names[] = {
498 	HCMD_NAME(NVM_ACCESS_COMPLETE),
499 	HCMD_NAME(NVM_GET_INFO),
500 };
501 
502 static const struct iwl_hcmd_arr iwl_mvm_groups[] = {
503 	[LEGACY_GROUP] = HCMD_ARR(iwl_mvm_legacy_names),
504 	[LONG_GROUP] = HCMD_ARR(iwl_mvm_legacy_names),
505 	[SYSTEM_GROUP] = HCMD_ARR(iwl_mvm_system_names),
506 	[MAC_CONF_GROUP] = HCMD_ARR(iwl_mvm_mac_conf_names),
507 	[PHY_OPS_GROUP] = HCMD_ARR(iwl_mvm_phy_names),
508 	[DATA_PATH_GROUP] = HCMD_ARR(iwl_mvm_data_path_names),
509 	[LOCATION_GROUP] = HCMD_ARR(iwl_mvm_location_names),
510 	[PROT_OFFLOAD_GROUP] = HCMD_ARR(iwl_mvm_prot_offload_names),
511 	[REGULATORY_AND_NVM_GROUP] =
512 		HCMD_ARR(iwl_mvm_regulatory_and_nvm_names),
513 };
514 
515 /* this forward declaration can avoid to export the function */
516 static void iwl_mvm_async_handlers_wk(struct work_struct *wk);
517 #ifdef CONFIG_PM
518 static void iwl_mvm_d0i3_exit_work(struct work_struct *wk);
519 #endif
520 
521 static u32 iwl_mvm_min_backoff(struct iwl_mvm *mvm)
522 {
523 	const struct iwl_pwr_tx_backoff *backoff = mvm->cfg->pwr_tx_backoffs;
524 	u64 dflt_pwr_limit;
525 
526 	if (!backoff)
527 		return 0;
528 
529 	dflt_pwr_limit = iwl_acpi_get_pwr_limit(mvm->dev);
530 
531 	while (backoff->pwr) {
532 		if (dflt_pwr_limit >= backoff->pwr)
533 			return backoff->backoff;
534 
535 		backoff++;
536 	}
537 
538 	return 0;
539 }
540 
541 static void iwl_mvm_tx_unblock_dwork(struct work_struct *work)
542 {
543 	struct iwl_mvm *mvm =
544 		container_of(work, struct iwl_mvm, cs_tx_unblock_dwork.work);
545 	struct ieee80211_vif *tx_blocked_vif;
546 	struct iwl_mvm_vif *mvmvif;
547 
548 	mutex_lock(&mvm->mutex);
549 
550 	tx_blocked_vif =
551 		rcu_dereference_protected(mvm->csa_tx_blocked_vif,
552 					  lockdep_is_held(&mvm->mutex));
553 
554 	if (!tx_blocked_vif)
555 		goto unlock;
556 
557 	mvmvif = iwl_mvm_vif_from_mac80211(tx_blocked_vif);
558 	iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, false);
559 	RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
560 unlock:
561 	mutex_unlock(&mvm->mutex);
562 }
563 
564 static int iwl_mvm_fwrt_dump_start(void *ctx)
565 {
566 	struct iwl_mvm *mvm = ctx;
567 	int ret;
568 
569 	ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_FW_DBG_COLLECT);
570 	if (ret)
571 		return ret;
572 
573 	mutex_lock(&mvm->mutex);
574 
575 	return 0;
576 }
577 
578 static void iwl_mvm_fwrt_dump_end(void *ctx)
579 {
580 	struct iwl_mvm *mvm = ctx;
581 
582 	mutex_unlock(&mvm->mutex);
583 
584 	iwl_mvm_unref(mvm, IWL_MVM_REF_FW_DBG_COLLECT);
585 }
586 
587 static bool iwl_mvm_fwrt_fw_running(void *ctx)
588 {
589 	return iwl_mvm_firmware_running(ctx);
590 }
591 
592 static int iwl_mvm_fwrt_send_hcmd(void *ctx, struct iwl_host_cmd *host_cmd)
593 {
594 	struct iwl_mvm *mvm = (struct iwl_mvm *)ctx;
595 	int ret;
596 
597 	mutex_lock(&mvm->mutex);
598 	ret = iwl_mvm_send_cmd(mvm, host_cmd);
599 	mutex_unlock(&mvm->mutex);
600 
601 	return ret;
602 }
603 
604 static bool iwl_mvm_d3_debug_enable(void *ctx)
605 {
606 	return IWL_MVM_D3_DEBUG;
607 }
608 
609 static const struct iwl_fw_runtime_ops iwl_mvm_fwrt_ops = {
610 	.dump_start = iwl_mvm_fwrt_dump_start,
611 	.dump_end = iwl_mvm_fwrt_dump_end,
612 	.fw_running = iwl_mvm_fwrt_fw_running,
613 	.send_hcmd = iwl_mvm_fwrt_send_hcmd,
614 	.d3_debug_enable = iwl_mvm_d3_debug_enable,
615 };
616 
617 static struct iwl_op_mode *
618 iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg,
619 		      const struct iwl_fw *fw, struct dentry *dbgfs_dir)
620 {
621 	struct ieee80211_hw *hw;
622 	struct iwl_op_mode *op_mode;
623 	struct iwl_mvm *mvm;
624 	struct iwl_trans_config trans_cfg = {};
625 	static const u8 no_reclaim_cmds[] = {
626 		TX_CMD,
627 	};
628 	int err, scan_size;
629 	u32 min_backoff;
630 	enum iwl_amsdu_size rb_size_default;
631 
632 	/*
633 	 * We use IWL_MVM_STATION_COUNT to check the validity of the station
634 	 * index all over the driver - check that its value corresponds to the
635 	 * array size.
636 	 */
637 	BUILD_BUG_ON(ARRAY_SIZE(mvm->fw_id_to_mac_id) != IWL_MVM_STATION_COUNT);
638 
639 	/********************************
640 	 * 1. Allocating and configuring HW data
641 	 ********************************/
642 	hw = ieee80211_alloc_hw(sizeof(struct iwl_op_mode) +
643 				sizeof(struct iwl_mvm),
644 				&iwl_mvm_hw_ops);
645 	if (!hw)
646 		return NULL;
647 
648 	if (cfg->max_rx_agg_size)
649 		hw->max_rx_aggregation_subframes = cfg->max_rx_agg_size;
650 	else
651 		hw->max_rx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF;
652 
653 	if (cfg->max_tx_agg_size)
654 		hw->max_tx_aggregation_subframes = cfg->max_tx_agg_size;
655 	else
656 		hw->max_tx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF;
657 
658 	op_mode = hw->priv;
659 
660 	mvm = IWL_OP_MODE_GET_MVM(op_mode);
661 	mvm->dev = trans->dev;
662 	mvm->trans = trans;
663 	mvm->cfg = cfg;
664 	mvm->fw = fw;
665 	mvm->hw = hw;
666 
667 	iwl_fw_runtime_init(&mvm->fwrt, trans, fw, &iwl_mvm_fwrt_ops, mvm,
668 			    dbgfs_dir);
669 
670 	mvm->init_status = 0;
671 
672 	if (iwl_mvm_has_new_rx_api(mvm)) {
673 		op_mode->ops = &iwl_mvm_ops_mq;
674 		trans->rx_mpdu_cmd_hdr_size =
675 			(trans->cfg->device_family >=
676 			 IWL_DEVICE_FAMILY_22560) ?
677 			sizeof(struct iwl_rx_mpdu_desc) :
678 			IWL_RX_DESC_SIZE_V1;
679 	} else {
680 		op_mode->ops = &iwl_mvm_ops;
681 		trans->rx_mpdu_cmd_hdr_size =
682 			sizeof(struct iwl_rx_mpdu_res_start);
683 
684 		if (WARN_ON(trans->num_rx_queues > 1))
685 			goto out_free;
686 	}
687 
688 	mvm->fw_restart = iwlwifi_mod_params.fw_restart ? -1 : 0;
689 
690 	mvm->aux_queue = IWL_MVM_DQA_AUX_QUEUE;
691 	mvm->snif_queue = IWL_MVM_DQA_INJECT_MONITOR_QUEUE;
692 	mvm->probe_queue = IWL_MVM_DQA_AP_PROBE_RESP_QUEUE;
693 	mvm->p2p_dev_queue = IWL_MVM_DQA_P2P_DEVICE_QUEUE;
694 
695 	mvm->sf_state = SF_UNINIT;
696 	if (iwl_mvm_has_unified_ucode(mvm))
697 		iwl_fw_set_current_image(&mvm->fwrt, IWL_UCODE_REGULAR);
698 	else
699 		iwl_fw_set_current_image(&mvm->fwrt, IWL_UCODE_INIT);
700 	mvm->drop_bcn_ap_mode = true;
701 
702 	mutex_init(&mvm->mutex);
703 	mutex_init(&mvm->d0i3_suspend_mutex);
704 	spin_lock_init(&mvm->async_handlers_lock);
705 	INIT_LIST_HEAD(&mvm->time_event_list);
706 	INIT_LIST_HEAD(&mvm->aux_roc_te_list);
707 	INIT_LIST_HEAD(&mvm->async_handlers_list);
708 	spin_lock_init(&mvm->time_event_lock);
709 	INIT_LIST_HEAD(&mvm->ftm_initiator.loc_list);
710 
711 	INIT_WORK(&mvm->async_handlers_wk, iwl_mvm_async_handlers_wk);
712 	INIT_WORK(&mvm->roc_done_wk, iwl_mvm_roc_done_wk);
713 #ifdef CONFIG_PM
714 	INIT_WORK(&mvm->d0i3_exit_work, iwl_mvm_d0i3_exit_work);
715 #endif
716 	INIT_DELAYED_WORK(&mvm->tdls_cs.dwork, iwl_mvm_tdls_ch_switch_work);
717 	INIT_DELAYED_WORK(&mvm->scan_timeout_dwork, iwl_mvm_scan_timeout_wk);
718 	INIT_WORK(&mvm->add_stream_wk, iwl_mvm_add_new_dqa_stream_wk);
719 	INIT_LIST_HEAD(&mvm->add_stream_txqs);
720 
721 	spin_lock_init(&mvm->d0i3_tx_lock);
722 	spin_lock_init(&mvm->refs_lock);
723 	skb_queue_head_init(&mvm->d0i3_tx);
724 	init_waitqueue_head(&mvm->d0i3_exit_waitq);
725 	init_waitqueue_head(&mvm->rx_sync_waitq);
726 
727 	atomic_set(&mvm->queue_sync_counter, 0);
728 
729 	SET_IEEE80211_DEV(mvm->hw, mvm->trans->dev);
730 
731 	spin_lock_init(&mvm->tcm.lock);
732 	INIT_DELAYED_WORK(&mvm->tcm.work, iwl_mvm_tcm_work);
733 	mvm->tcm.ts = jiffies;
734 	mvm->tcm.ll_ts = jiffies;
735 	mvm->tcm.uapsd_nonagg_ts = jiffies;
736 
737 	INIT_DELAYED_WORK(&mvm->cs_tx_unblock_dwork, iwl_mvm_tx_unblock_dwork);
738 
739 	/*
740 	 * Populate the state variables that the transport layer needs
741 	 * to know about.
742 	 */
743 	trans_cfg.op_mode = op_mode;
744 	trans_cfg.no_reclaim_cmds = no_reclaim_cmds;
745 	trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds);
746 
747 	if (mvm->trans->cfg->device_family >= IWL_DEVICE_FAMILY_22560)
748 		rb_size_default = IWL_AMSDU_2K;
749 	else
750 		rb_size_default = IWL_AMSDU_4K;
751 
752 	switch (iwlwifi_mod_params.amsdu_size) {
753 	case IWL_AMSDU_DEF:
754 		trans_cfg.rx_buf_size = rb_size_default;
755 		break;
756 	case IWL_AMSDU_4K:
757 		trans_cfg.rx_buf_size = IWL_AMSDU_4K;
758 		break;
759 	case IWL_AMSDU_8K:
760 		trans_cfg.rx_buf_size = IWL_AMSDU_8K;
761 		break;
762 	case IWL_AMSDU_12K:
763 		trans_cfg.rx_buf_size = IWL_AMSDU_12K;
764 		break;
765 	default:
766 		pr_err("%s: Unsupported amsdu_size: %d\n", KBUILD_MODNAME,
767 		       iwlwifi_mod_params.amsdu_size);
768 		trans_cfg.rx_buf_size = rb_size_default;
769 	}
770 
771 	BUILD_BUG_ON(sizeof(struct iwl_ldbg_config_cmd) !=
772 		     LDBG_CFG_COMMAND_SIZE);
773 
774 	trans->wide_cmd_header = true;
775 	trans_cfg.bc_table_dword =
776 		mvm->trans->cfg->device_family < IWL_DEVICE_FAMILY_22560;
777 
778 	trans_cfg.command_groups = iwl_mvm_groups;
779 	trans_cfg.command_groups_size = ARRAY_SIZE(iwl_mvm_groups);
780 
781 	trans_cfg.cmd_queue = IWL_MVM_DQA_CMD_QUEUE;
782 	trans_cfg.cmd_fifo = IWL_MVM_TX_FIFO_CMD;
783 	trans_cfg.scd_set_active = true;
784 
785 	trans_cfg.cb_data_offs = offsetof(struct ieee80211_tx_info,
786 					  driver_data[2]);
787 
788 	trans_cfg.sw_csum_tx = IWL_MVM_SW_TX_CSUM_OFFLOAD;
789 
790 	/* Set a short watchdog for the command queue */
791 	trans_cfg.cmd_q_wdg_timeout =
792 		iwl_mvm_get_wd_timeout(mvm, NULL, false, true);
793 
794 	snprintf(mvm->hw->wiphy->fw_version,
795 		 sizeof(mvm->hw->wiphy->fw_version),
796 		 "%s", fw->fw_version);
797 
798 	/* Configure transport layer */
799 	iwl_trans_configure(mvm->trans, &trans_cfg);
800 
801 	trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD;
802 	trans->dbg_dest_tlv = mvm->fw->dbg.dest_tlv;
803 	trans->dbg_n_dest_reg = mvm->fw->dbg.n_dest_reg;
804 	memcpy(trans->dbg_conf_tlv, mvm->fw->dbg.conf_tlv,
805 	       sizeof(trans->dbg_conf_tlv));
806 	trans->dbg_trigger_tlv = mvm->fw->dbg.trigger_tlv;
807 
808 	trans->iml = mvm->fw->iml;
809 	trans->iml_len = mvm->fw->iml_len;
810 
811 	/* set up notification wait support */
812 	iwl_notification_wait_init(&mvm->notif_wait);
813 
814 	/* Init phy db */
815 	mvm->phy_db = iwl_phy_db_init(trans);
816 	if (!mvm->phy_db) {
817 		IWL_ERR(mvm, "Cannot init phy_db\n");
818 		goto out_free;
819 	}
820 
821 	IWL_INFO(mvm, "Detected %s, REV=0x%X\n",
822 		 mvm->cfg->name, mvm->trans->hw_rev);
823 
824 	if (iwlwifi_mod_params.nvm_file)
825 		mvm->nvm_file_name = iwlwifi_mod_params.nvm_file;
826 	else
827 		IWL_DEBUG_EEPROM(mvm->trans->dev,
828 				 "working without external nvm file\n");
829 
830 	err = iwl_trans_start_hw(mvm->trans);
831 	if (err)
832 		goto out_free;
833 
834 	mutex_lock(&mvm->mutex);
835 	iwl_mvm_ref(mvm, IWL_MVM_REF_INIT_UCODE);
836 	err = iwl_run_init_mvm_ucode(mvm, true);
837 	if (err && err != -ERFKILL)
838 		iwl_fw_dbg_error_collect(&mvm->fwrt, FW_DBG_TRIGGER_DRIVER);
839 	if (!iwlmvm_mod_params.init_dbg || !err)
840 		iwl_mvm_stop_device(mvm);
841 	iwl_mvm_unref(mvm, IWL_MVM_REF_INIT_UCODE);
842 	mutex_unlock(&mvm->mutex);
843 	if (err < 0) {
844 		IWL_ERR(mvm, "Failed to run INIT ucode: %d\n", err);
845 		goto out_free;
846 	}
847 
848 	scan_size = iwl_mvm_scan_size(mvm);
849 
850 	mvm->scan_cmd = kmalloc(scan_size, GFP_KERNEL);
851 	if (!mvm->scan_cmd)
852 		goto out_free;
853 
854 	/* Set EBS as successful as long as not stated otherwise by the FW. */
855 	mvm->last_ebs_successful = true;
856 
857 	err = iwl_mvm_mac_setup_register(mvm);
858 	if (err)
859 		goto out_free;
860 	mvm->hw_registered = true;
861 
862 	min_backoff = iwl_mvm_min_backoff(mvm);
863 	iwl_mvm_thermal_initialize(mvm, min_backoff);
864 
865 	iwl_mvm_dbgfs_register(mvm, dbgfs_dir);
866 
867 	if (!iwl_mvm_has_new_rx_stats_api(mvm))
868 		memset(&mvm->rx_stats_v3, 0,
869 		       sizeof(struct mvm_statistics_rx_v3));
870 	else
871 		memset(&mvm->rx_stats, 0, sizeof(struct mvm_statistics_rx));
872 
873 	/* The transport always starts with a taken reference, we can
874 	 * release it now if d0i3 is supported */
875 	if (iwl_mvm_is_d0i3_supported(mvm))
876 		iwl_trans_unref(mvm->trans);
877 
878 	iwl_mvm_toggle_tx_ant(mvm, &mvm->mgmt_last_antenna_idx);
879 
880 	return op_mode;
881 
882  out_free:
883 	iwl_fw_flush_dump(&mvm->fwrt);
884 	iwl_fw_runtime_free(&mvm->fwrt);
885 
886 	if (iwlmvm_mod_params.init_dbg)
887 		return op_mode;
888 	iwl_phy_db_free(mvm->phy_db);
889 	kfree(mvm->scan_cmd);
890 	iwl_trans_op_mode_leave(trans);
891 
892 	ieee80211_free_hw(mvm->hw);
893 	return NULL;
894 }
895 
896 static void iwl_op_mode_mvm_stop(struct iwl_op_mode *op_mode)
897 {
898 	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
899 	int i;
900 
901 	/* If d0i3 is supported, we have released the reference that
902 	 * the transport started with, so we should take it back now
903 	 * that we are leaving.
904 	 */
905 	if (iwl_mvm_is_d0i3_supported(mvm))
906 		iwl_trans_ref(mvm->trans);
907 
908 	iwl_mvm_leds_exit(mvm);
909 
910 	iwl_mvm_thermal_exit(mvm);
911 
912 	ieee80211_unregister_hw(mvm->hw);
913 
914 	kfree(mvm->scan_cmd);
915 	kfree(mvm->mcast_filter_cmd);
916 	mvm->mcast_filter_cmd = NULL;
917 
918 	kfree(mvm->error_recovery_buf);
919 	mvm->error_recovery_buf = NULL;
920 
921 #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_IWLWIFI_DEBUGFS)
922 	kfree(mvm->d3_resume_sram);
923 #endif
924 	iwl_trans_op_mode_leave(mvm->trans);
925 
926 	iwl_phy_db_free(mvm->phy_db);
927 	mvm->phy_db = NULL;
928 
929 	kfree(mvm->nvm_data);
930 	for (i = 0; i < NVM_MAX_NUM_SECTIONS; i++)
931 		kfree(mvm->nvm_sections[i].data);
932 
933 	cancel_delayed_work_sync(&mvm->tcm.work);
934 
935 	iwl_fw_runtime_free(&mvm->fwrt);
936 	mutex_destroy(&mvm->mutex);
937 	mutex_destroy(&mvm->d0i3_suspend_mutex);
938 
939 	ieee80211_free_hw(mvm->hw);
940 }
941 
942 struct iwl_async_handler_entry {
943 	struct list_head list;
944 	struct iwl_rx_cmd_buffer rxb;
945 	enum iwl_rx_handler_context context;
946 	void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb);
947 };
948 
949 void iwl_mvm_async_handlers_purge(struct iwl_mvm *mvm)
950 {
951 	struct iwl_async_handler_entry *entry, *tmp;
952 
953 	spin_lock_bh(&mvm->async_handlers_lock);
954 	list_for_each_entry_safe(entry, tmp, &mvm->async_handlers_list, list) {
955 		iwl_free_rxb(&entry->rxb);
956 		list_del(&entry->list);
957 		kfree(entry);
958 	}
959 	spin_unlock_bh(&mvm->async_handlers_lock);
960 }
961 
962 static void iwl_mvm_async_handlers_wk(struct work_struct *wk)
963 {
964 	struct iwl_mvm *mvm =
965 		container_of(wk, struct iwl_mvm, async_handlers_wk);
966 	struct iwl_async_handler_entry *entry, *tmp;
967 	LIST_HEAD(local_list);
968 
969 	/* Ensure that we are not in stop flow (check iwl_mvm_mac_stop) */
970 
971 	/*
972 	 * Sync with Rx path with a lock. Remove all the entries from this list,
973 	 * add them to a local one (lock free), and then handle them.
974 	 */
975 	spin_lock_bh(&mvm->async_handlers_lock);
976 	list_splice_init(&mvm->async_handlers_list, &local_list);
977 	spin_unlock_bh(&mvm->async_handlers_lock);
978 
979 	list_for_each_entry_safe(entry, tmp, &local_list, list) {
980 		if (entry->context == RX_HANDLER_ASYNC_LOCKED)
981 			mutex_lock(&mvm->mutex);
982 		entry->fn(mvm, &entry->rxb);
983 		iwl_free_rxb(&entry->rxb);
984 		list_del(&entry->list);
985 		if (entry->context == RX_HANDLER_ASYNC_LOCKED)
986 			mutex_unlock(&mvm->mutex);
987 		kfree(entry);
988 	}
989 }
990 
991 static inline void iwl_mvm_rx_check_trigger(struct iwl_mvm *mvm,
992 					    struct iwl_rx_packet *pkt)
993 {
994 	struct iwl_fw_dbg_trigger_tlv *trig;
995 	struct iwl_fw_dbg_trigger_cmd *cmds_trig;
996 	int i;
997 
998 	trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, NULL,
999 				     FW_DBG_TRIGGER_FW_NOTIF);
1000 	if (!trig)
1001 		return;
1002 
1003 	cmds_trig = (void *)trig->data;
1004 
1005 	for (i = 0; i < ARRAY_SIZE(cmds_trig->cmds); i++) {
1006 		/* don't collect on CMD 0 */
1007 		if (!cmds_trig->cmds[i].cmd_id)
1008 			break;
1009 
1010 		if (cmds_trig->cmds[i].cmd_id != pkt->hdr.cmd ||
1011 		    cmds_trig->cmds[i].group_id != pkt->hdr.group_id)
1012 			continue;
1013 
1014 		iwl_fw_dbg_collect_trig(&mvm->fwrt, trig,
1015 					"CMD 0x%02x.%02x received",
1016 					pkt->hdr.group_id, pkt->hdr.cmd);
1017 		break;
1018 	}
1019 }
1020 
1021 static void iwl_mvm_rx_common(struct iwl_mvm *mvm,
1022 			      struct iwl_rx_cmd_buffer *rxb,
1023 			      struct iwl_rx_packet *pkt)
1024 {
1025 	int i;
1026 
1027 	iwl_mvm_rx_check_trigger(mvm, pkt);
1028 
1029 	/*
1030 	 * Do the notification wait before RX handlers so
1031 	 * even if the RX handler consumes the RXB we have
1032 	 * access to it in the notification wait entry.
1033 	 */
1034 	iwl_notification_wait_notify(&mvm->notif_wait, pkt);
1035 
1036 	for (i = 0; i < ARRAY_SIZE(iwl_mvm_rx_handlers); i++) {
1037 		const struct iwl_rx_handlers *rx_h = &iwl_mvm_rx_handlers[i];
1038 		struct iwl_async_handler_entry *entry;
1039 
1040 		if (rx_h->cmd_id != WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd))
1041 			continue;
1042 
1043 		if (rx_h->context == RX_HANDLER_SYNC) {
1044 			rx_h->fn(mvm, rxb);
1045 			return;
1046 		}
1047 
1048 		entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
1049 		/* we can't do much... */
1050 		if (!entry)
1051 			return;
1052 
1053 		entry->rxb._page = rxb_steal_page(rxb);
1054 		entry->rxb._offset = rxb->_offset;
1055 		entry->rxb._rx_page_order = rxb->_rx_page_order;
1056 		entry->fn = rx_h->fn;
1057 		entry->context = rx_h->context;
1058 		spin_lock(&mvm->async_handlers_lock);
1059 		list_add_tail(&entry->list, &mvm->async_handlers_list);
1060 		spin_unlock(&mvm->async_handlers_lock);
1061 		schedule_work(&mvm->async_handlers_wk);
1062 		break;
1063 	}
1064 }
1065 
1066 static void iwl_mvm_rx(struct iwl_op_mode *op_mode,
1067 		       struct napi_struct *napi,
1068 		       struct iwl_rx_cmd_buffer *rxb)
1069 {
1070 	struct iwl_rx_packet *pkt = rxb_addr(rxb);
1071 	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1072 	u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd);
1073 
1074 	if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD)))
1075 		iwl_mvm_rx_rx_mpdu(mvm, napi, rxb);
1076 	else if (cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_PHY_CMD))
1077 		iwl_mvm_rx_rx_phy_cmd(mvm, rxb);
1078 	else
1079 		iwl_mvm_rx_common(mvm, rxb, pkt);
1080 }
1081 
1082 static void iwl_mvm_rx_mq(struct iwl_op_mode *op_mode,
1083 			  struct napi_struct *napi,
1084 			  struct iwl_rx_cmd_buffer *rxb)
1085 {
1086 	struct iwl_rx_packet *pkt = rxb_addr(rxb);
1087 	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1088 	u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd);
1089 
1090 	if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD)))
1091 		iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, 0);
1092 	else if (unlikely(cmd == WIDE_ID(DATA_PATH_GROUP,
1093 					 RX_QUEUES_NOTIFICATION)))
1094 		iwl_mvm_rx_queue_notif(mvm, rxb, 0);
1095 	else if (cmd == WIDE_ID(LEGACY_GROUP, FRAME_RELEASE))
1096 		iwl_mvm_rx_frame_release(mvm, napi, rxb, 0);
1097 	else if (cmd == WIDE_ID(DATA_PATH_GROUP, RX_NO_DATA_NOTIF))
1098 		iwl_mvm_rx_monitor_no_data(mvm, napi, rxb, 0);
1099 	else
1100 		iwl_mvm_rx_common(mvm, rxb, pkt);
1101 }
1102 
1103 static void iwl_mvm_async_cb(struct iwl_op_mode *op_mode,
1104 			     const struct iwl_device_cmd *cmd)
1105 {
1106 	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1107 
1108 	/*
1109 	 * For now, we only set the CMD_WANT_ASYNC_CALLBACK for ADD_STA
1110 	 * commands that need to block the Tx queues.
1111 	 */
1112 	iwl_trans_block_txq_ptrs(mvm->trans, false);
1113 }
1114 
1115 static int iwl_mvm_is_static_queue(struct iwl_mvm *mvm, int queue)
1116 {
1117 	return queue == mvm->aux_queue || queue == mvm->probe_queue ||
1118 		queue == mvm->p2p_dev_queue || queue == mvm->snif_queue;
1119 }
1120 
1121 static void iwl_mvm_queue_state_change(struct iwl_op_mode *op_mode,
1122 				       int hw_queue, bool start)
1123 {
1124 	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1125 	struct ieee80211_sta *sta;
1126 	struct ieee80211_txq *txq;
1127 	struct iwl_mvm_txq *mvmtxq;
1128 	int i;
1129 	unsigned long tid_bitmap;
1130 	struct iwl_mvm_sta *mvmsta;
1131 	u8 sta_id;
1132 
1133 	sta_id = iwl_mvm_has_new_tx_api(mvm) ?
1134 		mvm->tvqm_info[hw_queue].sta_id :
1135 		mvm->queue_info[hw_queue].ra_sta_id;
1136 
1137 	if (WARN_ON_ONCE(sta_id >= ARRAY_SIZE(mvm->fw_id_to_mac_id)))
1138 		return;
1139 
1140 	rcu_read_lock();
1141 
1142 	sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
1143 	if (IS_ERR_OR_NULL(sta))
1144 		goto out;
1145 	mvmsta = iwl_mvm_sta_from_mac80211(sta);
1146 
1147 	if (iwl_mvm_is_static_queue(mvm, hw_queue)) {
1148 		if (!start)
1149 			ieee80211_stop_queues(mvm->hw);
1150 		else if (mvmsta->sta_state != IEEE80211_STA_NOTEXIST)
1151 			ieee80211_wake_queues(mvm->hw);
1152 
1153 		goto out;
1154 	}
1155 
1156 	if (iwl_mvm_has_new_tx_api(mvm)) {
1157 		int tid = mvm->tvqm_info[hw_queue].txq_tid;
1158 
1159 		tid_bitmap = BIT(tid);
1160 	} else {
1161 		tid_bitmap = mvm->queue_info[hw_queue].tid_bitmap;
1162 	}
1163 
1164 	for_each_set_bit(i, &tid_bitmap, IWL_MAX_TID_COUNT + 1) {
1165 		int tid = i;
1166 
1167 		if (tid == IWL_MAX_TID_COUNT)
1168 			tid = IEEE80211_NUM_TIDS;
1169 
1170 		txq = sta->txq[tid];
1171 		mvmtxq = iwl_mvm_txq_from_mac80211(txq);
1172 		mvmtxq->stopped = !start;
1173 
1174 		if (start && mvmsta->sta_state != IEEE80211_STA_NOTEXIST)
1175 			iwl_mvm_mac_itxq_xmit(mvm->hw, txq);
1176 	}
1177 
1178 out:
1179 	rcu_read_unlock();
1180 }
1181 
1182 static void iwl_mvm_stop_sw_queue(struct iwl_op_mode *op_mode, int hw_queue)
1183 {
1184 	iwl_mvm_queue_state_change(op_mode, hw_queue, false);
1185 }
1186 
1187 static void iwl_mvm_wake_sw_queue(struct iwl_op_mode *op_mode, int hw_queue)
1188 {
1189 	iwl_mvm_queue_state_change(op_mode, hw_queue, true);
1190 }
1191 
1192 static void iwl_mvm_set_rfkill_state(struct iwl_mvm *mvm)
1193 {
1194 	bool state = iwl_mvm_is_radio_killed(mvm);
1195 
1196 	if (state)
1197 		wake_up(&mvm->rx_sync_waitq);
1198 
1199 	wiphy_rfkill_set_hw_state(mvm->hw->wiphy, state);
1200 }
1201 
1202 void iwl_mvm_set_hw_ctkill_state(struct iwl_mvm *mvm, bool state)
1203 {
1204 	if (state)
1205 		set_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
1206 	else
1207 		clear_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
1208 
1209 	iwl_mvm_set_rfkill_state(mvm);
1210 }
1211 
1212 static bool iwl_mvm_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state)
1213 {
1214 	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1215 	bool calibrating = READ_ONCE(mvm->calibrating);
1216 
1217 	if (state)
1218 		set_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
1219 	else
1220 		clear_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
1221 
1222 	iwl_mvm_set_rfkill_state(mvm);
1223 
1224 	/* iwl_run_init_mvm_ucode is waiting for results, abort it */
1225 	if (calibrating)
1226 		iwl_abort_notification_waits(&mvm->notif_wait);
1227 
1228 	/*
1229 	 * Stop the device if we run OPERATIONAL firmware or if we are in the
1230 	 * middle of the calibrations.
1231 	 */
1232 	return state && (mvm->fwrt.cur_fw_img != IWL_UCODE_INIT || calibrating);
1233 }
1234 
1235 static void iwl_mvm_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb)
1236 {
1237 	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1238 	struct ieee80211_tx_info *info;
1239 
1240 	info = IEEE80211_SKB_CB(skb);
1241 	iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]);
1242 	ieee80211_free_txskb(mvm->hw, skb);
1243 }
1244 
1245 struct iwl_mvm_reprobe {
1246 	struct device *dev;
1247 	struct work_struct work;
1248 };
1249 
1250 static void iwl_mvm_reprobe_wk(struct work_struct *wk)
1251 {
1252 	struct iwl_mvm_reprobe *reprobe;
1253 
1254 	reprobe = container_of(wk, struct iwl_mvm_reprobe, work);
1255 	if (device_reprobe(reprobe->dev))
1256 		dev_err(reprobe->dev, "reprobe failed!\n");
1257 	kfree(reprobe);
1258 	module_put(THIS_MODULE);
1259 }
1260 
1261 void iwl_mvm_nic_restart(struct iwl_mvm *mvm, bool fw_error)
1262 {
1263 	iwl_abort_notification_waits(&mvm->notif_wait);
1264 	del_timer(&mvm->fwrt.dump.periodic_trig);
1265 
1266 	/*
1267 	 * This is a bit racy, but worst case we tell mac80211 about
1268 	 * a stopped/aborted scan when that was already done which
1269 	 * is not a problem. It is necessary to abort any os scan
1270 	 * here because mac80211 requires having the scan cleared
1271 	 * before restarting.
1272 	 * We'll reset the scan_status to NONE in restart cleanup in
1273 	 * the next start() call from mac80211. If restart isn't called
1274 	 * (no fw restart) scan status will stay busy.
1275 	 */
1276 	iwl_mvm_report_scan_aborted(mvm);
1277 
1278 	/*
1279 	 * If we're restarting already, don't cycle restarts.
1280 	 * If INIT fw asserted, it will likely fail again.
1281 	 * If WoWLAN fw asserted, don't restart either, mac80211
1282 	 * can't recover this since we're already half suspended.
1283 	 */
1284 	if (!mvm->fw_restart && fw_error) {
1285 		iwl_fw_error_collect(&mvm->fwrt);
1286 	} else if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1287 		struct iwl_mvm_reprobe *reprobe;
1288 
1289 		IWL_ERR(mvm,
1290 			"Firmware error during reconfiguration - reprobe!\n");
1291 
1292 		/*
1293 		 * get a module reference to avoid doing this while unloading
1294 		 * anyway and to avoid scheduling a work with code that's
1295 		 * being removed.
1296 		 */
1297 		if (!try_module_get(THIS_MODULE)) {
1298 			IWL_ERR(mvm, "Module is being unloaded - abort\n");
1299 			return;
1300 		}
1301 
1302 		reprobe = kzalloc(sizeof(*reprobe), GFP_ATOMIC);
1303 		if (!reprobe) {
1304 			module_put(THIS_MODULE);
1305 			return;
1306 		}
1307 		reprobe->dev = mvm->trans->dev;
1308 		INIT_WORK(&reprobe->work, iwl_mvm_reprobe_wk);
1309 		schedule_work(&reprobe->work);
1310 	} else if (test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED,
1311 			    &mvm->status)) {
1312 		IWL_ERR(mvm, "HW restart already requested, but not started\n");
1313 	} else if (mvm->fwrt.cur_fw_img == IWL_UCODE_REGULAR &&
1314 		   mvm->hw_registered &&
1315 		   !test_bit(STATUS_TRANS_DEAD, &mvm->trans->status)) {
1316 		/* don't let the transport/FW power down */
1317 		iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1318 
1319 		if (mvm->fw->ucode_capa.error_log_size) {
1320 			u32 src_size = mvm->fw->ucode_capa.error_log_size;
1321 			u32 src_addr = mvm->fw->ucode_capa.error_log_addr;
1322 			u8 *recover_buf = kzalloc(src_size, GFP_ATOMIC);
1323 
1324 			if (recover_buf) {
1325 				mvm->error_recovery_buf = recover_buf;
1326 				iwl_trans_read_mem_bytes(mvm->trans,
1327 							 src_addr,
1328 							 recover_buf,
1329 							 src_size);
1330 			}
1331 		}
1332 
1333 		iwl_fw_error_collect(&mvm->fwrt);
1334 
1335 		if (fw_error && mvm->fw_restart > 0)
1336 			mvm->fw_restart--;
1337 		set_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status);
1338 		ieee80211_restart_hw(mvm->hw);
1339 	}
1340 }
1341 
1342 static void iwl_mvm_nic_error(struct iwl_op_mode *op_mode)
1343 {
1344 	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1345 
1346 	if (!test_bit(STATUS_TRANS_DEAD, &mvm->trans->status))
1347 		iwl_mvm_dump_nic_error_log(mvm);
1348 
1349 	iwl_mvm_nic_restart(mvm, true);
1350 }
1351 
1352 static void iwl_mvm_cmd_queue_full(struct iwl_op_mode *op_mode)
1353 {
1354 	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1355 
1356 	WARN_ON(1);
1357 	iwl_mvm_nic_restart(mvm, true);
1358 }
1359 
1360 #ifdef CONFIG_PM
1361 struct iwl_d0i3_iter_data {
1362 	struct iwl_mvm *mvm;
1363 	struct ieee80211_vif *connected_vif;
1364 	u8 ap_sta_id;
1365 	u8 vif_count;
1366 	u8 offloading_tid;
1367 	bool disable_offloading;
1368 };
1369 
1370 static bool iwl_mvm_disallow_offloading(struct iwl_mvm *mvm,
1371 					struct ieee80211_vif *vif,
1372 					struct iwl_d0i3_iter_data *iter_data)
1373 {
1374 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1375 	struct iwl_mvm_sta *mvmsta;
1376 	u32 available_tids = 0;
1377 	u8 tid;
1378 
1379 	if (WARN_ON(vif->type != NL80211_IFTYPE_STATION ||
1380 		    mvmvif->ap_sta_id == IWL_MVM_INVALID_STA))
1381 		return false;
1382 
1383 	mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id);
1384 	if (!mvmsta)
1385 		return false;
1386 
1387 	spin_lock_bh(&mvmsta->lock);
1388 	for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1389 		struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
1390 
1391 		/*
1392 		 * in case of pending tx packets, don't use this tid
1393 		 * for offloading in order to prevent reuse of the same
1394 		 * qos seq counters.
1395 		 */
1396 		if (iwl_mvm_tid_queued(mvm, tid_data))
1397 			continue;
1398 
1399 		if (tid_data->state != IWL_AGG_OFF)
1400 			continue;
1401 
1402 		available_tids |= BIT(tid);
1403 	}
1404 	spin_unlock_bh(&mvmsta->lock);
1405 
1406 	/*
1407 	 * disallow protocol offloading if we have no available tid
1408 	 * (with no pending frames and no active aggregation,
1409 	 * as we don't handle "holes" properly - the scheduler needs the
1410 	 * frame's seq number and TFD index to match)
1411 	 */
1412 	if (!available_tids)
1413 		return true;
1414 
1415 	/* for simplicity, just use the first available tid */
1416 	iter_data->offloading_tid = ffs(available_tids) - 1;
1417 	return false;
1418 }
1419 
1420 static void iwl_mvm_enter_d0i3_iterator(void *_data, u8 *mac,
1421 					struct ieee80211_vif *vif)
1422 {
1423 	struct iwl_d0i3_iter_data *data = _data;
1424 	struct iwl_mvm *mvm = data->mvm;
1425 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1426 	u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE;
1427 
1428 	IWL_DEBUG_RPM(mvm, "entering D0i3 - vif %pM\n", vif->addr);
1429 	if (vif->type != NL80211_IFTYPE_STATION ||
1430 	    !vif->bss_conf.assoc)
1431 		return;
1432 
1433 	/*
1434 	 * in case of pending tx packets or active aggregations,
1435 	 * avoid offloading features in order to prevent reuse of
1436 	 * the same qos seq counters.
1437 	 */
1438 	if (iwl_mvm_disallow_offloading(mvm, vif, data))
1439 		data->disable_offloading = true;
1440 
1441 	iwl_mvm_update_d0i3_power_mode(mvm, vif, true, flags);
1442 	iwl_mvm_send_proto_offload(mvm, vif, data->disable_offloading,
1443 				   false, flags);
1444 
1445 	/*
1446 	 * on init/association, mvm already configures POWER_TABLE_CMD
1447 	 * and REPLY_MCAST_FILTER_CMD, so currently don't
1448 	 * reconfigure them (we might want to use different
1449 	 * params later on, though).
1450 	 */
1451 	data->ap_sta_id = mvmvif->ap_sta_id;
1452 	data->vif_count++;
1453 
1454 	/*
1455 	 * no new commands can be sent at this stage, so it's safe
1456 	 * to save the vif pointer during d0i3 entrance.
1457 	 */
1458 	data->connected_vif = vif;
1459 }
1460 
1461 static void iwl_mvm_set_wowlan_data(struct iwl_mvm *mvm,
1462 				    struct iwl_wowlan_config_cmd *cmd,
1463 				    struct iwl_d0i3_iter_data *iter_data)
1464 {
1465 	struct ieee80211_sta *ap_sta;
1466 	struct iwl_mvm_sta *mvm_ap_sta;
1467 
1468 	if (iter_data->ap_sta_id == IWL_MVM_INVALID_STA)
1469 		return;
1470 
1471 	rcu_read_lock();
1472 
1473 	ap_sta = rcu_dereference(mvm->fw_id_to_mac_id[iter_data->ap_sta_id]);
1474 	if (IS_ERR_OR_NULL(ap_sta))
1475 		goto out;
1476 
1477 	mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta);
1478 	cmd->is_11n_connection = ap_sta->ht_cap.ht_supported;
1479 	cmd->offloading_tid = iter_data->offloading_tid;
1480 	cmd->flags = ENABLE_L3_FILTERING | ENABLE_NBNS_FILTERING |
1481 		ENABLE_DHCP_FILTERING | ENABLE_STORE_BEACON;
1482 	/*
1483 	 * The d0i3 uCode takes care of the nonqos counters,
1484 	 * so configure only the qos seq ones.
1485 	 */
1486 	iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, cmd);
1487 out:
1488 	rcu_read_unlock();
1489 }
1490 
1491 int iwl_mvm_enter_d0i3(struct iwl_op_mode *op_mode)
1492 {
1493 	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1494 	u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE;
1495 	int ret;
1496 	struct iwl_d0i3_iter_data d0i3_iter_data = {
1497 		.mvm = mvm,
1498 	};
1499 	struct iwl_wowlan_config_cmd wowlan_config_cmd = {
1500 		.wakeup_filter = cpu_to_le32(IWL_WOWLAN_WAKEUP_RX_FRAME |
1501 					     IWL_WOWLAN_WAKEUP_BEACON_MISS |
1502 					     IWL_WOWLAN_WAKEUP_LINK_CHANGE),
1503 	};
1504 	struct iwl_d3_manager_config d3_cfg_cmd = {
1505 		.min_sleep_time = cpu_to_le32(1000),
1506 		.wakeup_flags = cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR),
1507 	};
1508 
1509 	IWL_DEBUG_RPM(mvm, "MVM entering D0i3\n");
1510 
1511 	if (WARN_ON_ONCE(mvm->fwrt.cur_fw_img != IWL_UCODE_REGULAR))
1512 		return -EINVAL;
1513 
1514 	set_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1515 
1516 	/*
1517 	 * iwl_mvm_ref_sync takes a reference before checking the flag.
1518 	 * so by checking there is no held reference we prevent a state
1519 	 * in which iwl_mvm_ref_sync continues successfully while we
1520 	 * configure the firmware to enter d0i3
1521 	 */
1522 	if (iwl_mvm_ref_taken(mvm)) {
1523 		IWL_DEBUG_RPM(mvm->trans, "abort d0i3 due to taken ref\n");
1524 		clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1525 		wake_up(&mvm->d0i3_exit_waitq);
1526 		return 1;
1527 	}
1528 
1529 	ieee80211_iterate_active_interfaces_atomic(mvm->hw,
1530 						   IEEE80211_IFACE_ITER_NORMAL,
1531 						   iwl_mvm_enter_d0i3_iterator,
1532 						   &d0i3_iter_data);
1533 	if (d0i3_iter_data.vif_count == 1) {
1534 		mvm->d0i3_ap_sta_id = d0i3_iter_data.ap_sta_id;
1535 		mvm->d0i3_offloading = !d0i3_iter_data.disable_offloading;
1536 	} else {
1537 		WARN_ON_ONCE(d0i3_iter_data.vif_count > 1);
1538 		mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA;
1539 		mvm->d0i3_offloading = false;
1540 	}
1541 
1542 	iwl_mvm_pause_tcm(mvm, true);
1543 	/* make sure we have no running tx while configuring the seqno */
1544 	synchronize_net();
1545 
1546 	/* Flush the hw queues, in case something got queued during entry */
1547 	/* TODO new tx api */
1548 	if (iwl_mvm_has_new_tx_api(mvm)) {
1549 		WARN_ONCE(1, "d0i3: Need to implement flush TX queue\n");
1550 	} else {
1551 		ret = iwl_mvm_flush_tx_path(mvm, iwl_mvm_flushable_queues(mvm),
1552 					    flags);
1553 		if (ret)
1554 			return ret;
1555 	}
1556 
1557 	/* configure wowlan configuration only if needed */
1558 	if (mvm->d0i3_ap_sta_id != IWL_MVM_INVALID_STA) {
1559 		/* wake on beacons only if beacon storing isn't supported */
1560 		if (!fw_has_capa(&mvm->fw->ucode_capa,
1561 				 IWL_UCODE_TLV_CAPA_BEACON_STORING))
1562 			wowlan_config_cmd.wakeup_filter |=
1563 				cpu_to_le32(IWL_WOWLAN_WAKEUP_BCN_FILTERING);
1564 
1565 		iwl_mvm_wowlan_config_key_params(mvm,
1566 						 d0i3_iter_data.connected_vif,
1567 						 true, flags);
1568 
1569 		iwl_mvm_set_wowlan_data(mvm, &wowlan_config_cmd,
1570 					&d0i3_iter_data);
1571 
1572 		ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, flags,
1573 					   sizeof(wowlan_config_cmd),
1574 					   &wowlan_config_cmd);
1575 		if (ret)
1576 			return ret;
1577 	}
1578 
1579 	return iwl_mvm_send_cmd_pdu(mvm, D3_CONFIG_CMD,
1580 				    flags | CMD_MAKE_TRANS_IDLE,
1581 				    sizeof(d3_cfg_cmd), &d3_cfg_cmd);
1582 }
1583 
1584 static void iwl_mvm_exit_d0i3_iterator(void *_data, u8 *mac,
1585 				       struct ieee80211_vif *vif)
1586 {
1587 	struct iwl_mvm *mvm = _data;
1588 	u32 flags = CMD_ASYNC | CMD_HIGH_PRIO;
1589 
1590 	IWL_DEBUG_RPM(mvm, "exiting D0i3 - vif %pM\n", vif->addr);
1591 	if (vif->type != NL80211_IFTYPE_STATION ||
1592 	    !vif->bss_conf.assoc)
1593 		return;
1594 
1595 	iwl_mvm_update_d0i3_power_mode(mvm, vif, false, flags);
1596 }
1597 
1598 struct iwl_mvm_d0i3_exit_work_iter_data {
1599 	struct iwl_mvm *mvm;
1600 	struct iwl_wowlan_status *status;
1601 	u32 wakeup_reasons;
1602 };
1603 
1604 static void iwl_mvm_d0i3_exit_work_iter(void *_data, u8 *mac,
1605 					struct ieee80211_vif *vif)
1606 {
1607 	struct iwl_mvm_d0i3_exit_work_iter_data *data = _data;
1608 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1609 	u32 reasons = data->wakeup_reasons;
1610 
1611 	/* consider only the relevant station interface */
1612 	if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc ||
1613 	    data->mvm->d0i3_ap_sta_id != mvmvif->ap_sta_id)
1614 		return;
1615 
1616 	if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH)
1617 		iwl_mvm_connection_loss(data->mvm, vif, "D0i3");
1618 	else if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON)
1619 		ieee80211_beacon_loss(vif);
1620 	else
1621 		iwl_mvm_d0i3_update_keys(data->mvm, vif, data->status);
1622 }
1623 
1624 void iwl_mvm_d0i3_enable_tx(struct iwl_mvm *mvm, __le16 *qos_seq)
1625 {
1626 	struct ieee80211_sta *sta = NULL;
1627 	struct iwl_mvm_sta *mvm_ap_sta;
1628 	int i;
1629 	bool wake_queues = false;
1630 
1631 	lockdep_assert_held(&mvm->mutex);
1632 
1633 	spin_lock_bh(&mvm->d0i3_tx_lock);
1634 
1635 	if (mvm->d0i3_ap_sta_id == IWL_MVM_INVALID_STA)
1636 		goto out;
1637 
1638 	IWL_DEBUG_RPM(mvm, "re-enqueue packets\n");
1639 
1640 	/* get the sta in order to update seq numbers and re-enqueue skbs */
1641 	sta = rcu_dereference_protected(
1642 			mvm->fw_id_to_mac_id[mvm->d0i3_ap_sta_id],
1643 			lockdep_is_held(&mvm->mutex));
1644 
1645 	if (IS_ERR_OR_NULL(sta)) {
1646 		sta = NULL;
1647 		goto out;
1648 	}
1649 
1650 	if (mvm->d0i3_offloading && qos_seq) {
1651 		/* update qos seq numbers if offloading was enabled */
1652 		mvm_ap_sta = iwl_mvm_sta_from_mac80211(sta);
1653 		for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
1654 			u16 seq = le16_to_cpu(qos_seq[i]);
1655 			/* firmware stores last-used one, we store next one */
1656 			seq += 0x10;
1657 			mvm_ap_sta->tid_data[i].seq_number = seq;
1658 		}
1659 	}
1660 out:
1661 	/* re-enqueue (or drop) all packets */
1662 	while (!skb_queue_empty(&mvm->d0i3_tx)) {
1663 		struct sk_buff *skb = __skb_dequeue(&mvm->d0i3_tx);
1664 
1665 		if (!sta || iwl_mvm_tx_skb(mvm, skb, sta))
1666 			ieee80211_free_txskb(mvm->hw, skb);
1667 
1668 		/* if the skb_queue is not empty, we need to wake queues */
1669 		wake_queues = true;
1670 	}
1671 	clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1672 	wake_up(&mvm->d0i3_exit_waitq);
1673 	mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA;
1674 	if (wake_queues)
1675 		ieee80211_wake_queues(mvm->hw);
1676 
1677 	spin_unlock_bh(&mvm->d0i3_tx_lock);
1678 }
1679 
1680 static void iwl_mvm_d0i3_exit_work(struct work_struct *wk)
1681 {
1682 	struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, d0i3_exit_work);
1683 	struct iwl_mvm_d0i3_exit_work_iter_data iter_data = {
1684 		.mvm = mvm,
1685 	};
1686 
1687 	struct iwl_wowlan_status *status;
1688 	u32 wakeup_reasons = 0;
1689 	__le16 *qos_seq = NULL;
1690 
1691 	mutex_lock(&mvm->mutex);
1692 
1693 	status = iwl_mvm_send_wowlan_get_status(mvm);
1694 	if (IS_ERR_OR_NULL(status)) {
1695 		/* set to NULL so we don't need to check before kfree'ing */
1696 		status = NULL;
1697 		goto out;
1698 	}
1699 
1700 	wakeup_reasons = le32_to_cpu(status->wakeup_reasons);
1701 	qos_seq = status->qos_seq_ctr;
1702 
1703 	IWL_DEBUG_RPM(mvm, "wakeup reasons: 0x%x\n", wakeup_reasons);
1704 
1705 	iter_data.wakeup_reasons = wakeup_reasons;
1706 	iter_data.status = status;
1707 	ieee80211_iterate_active_interfaces(mvm->hw,
1708 					    IEEE80211_IFACE_ITER_NORMAL,
1709 					    iwl_mvm_d0i3_exit_work_iter,
1710 					    &iter_data);
1711 out:
1712 	iwl_mvm_d0i3_enable_tx(mvm, qos_seq);
1713 
1714 	IWL_DEBUG_INFO(mvm, "d0i3 exit completed (wakeup reasons: 0x%x)\n",
1715 		       wakeup_reasons);
1716 
1717 	/* qos_seq might point inside resp_pkt, so free it only now */
1718 	kfree(status);
1719 
1720 	/* the FW might have updated the regdomain */
1721 	iwl_mvm_update_changed_regdom(mvm);
1722 
1723 	iwl_mvm_resume_tcm(mvm);
1724 	iwl_mvm_unref(mvm, IWL_MVM_REF_EXIT_WORK);
1725 	mutex_unlock(&mvm->mutex);
1726 }
1727 
1728 int _iwl_mvm_exit_d0i3(struct iwl_mvm *mvm)
1729 {
1730 	u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE |
1731 		    CMD_WAKE_UP_TRANS;
1732 	int ret;
1733 
1734 	IWL_DEBUG_RPM(mvm, "MVM exiting D0i3\n");
1735 
1736 	if (WARN_ON_ONCE(mvm->fwrt.cur_fw_img != IWL_UCODE_REGULAR))
1737 		return -EINVAL;
1738 
1739 	mutex_lock(&mvm->d0i3_suspend_mutex);
1740 	if (test_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags)) {
1741 		IWL_DEBUG_RPM(mvm, "Deferring d0i3 exit until resume\n");
1742 		__set_bit(D0I3_PENDING_WAKEUP, &mvm->d0i3_suspend_flags);
1743 		mutex_unlock(&mvm->d0i3_suspend_mutex);
1744 		return 0;
1745 	}
1746 	mutex_unlock(&mvm->d0i3_suspend_mutex);
1747 
1748 	ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, flags, 0, NULL);
1749 	if (ret)
1750 		goto out;
1751 
1752 	ieee80211_iterate_active_interfaces_atomic(mvm->hw,
1753 						   IEEE80211_IFACE_ITER_NORMAL,
1754 						   iwl_mvm_exit_d0i3_iterator,
1755 						   mvm);
1756 out:
1757 	schedule_work(&mvm->d0i3_exit_work);
1758 	return ret;
1759 }
1760 
1761 int iwl_mvm_exit_d0i3(struct iwl_op_mode *op_mode)
1762 {
1763 	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1764 
1765 	iwl_mvm_ref(mvm, IWL_MVM_REF_EXIT_WORK);
1766 	return _iwl_mvm_exit_d0i3(mvm);
1767 }
1768 
1769 #define IWL_MVM_D0I3_OPS					\
1770 	.enter_d0i3 = iwl_mvm_enter_d0i3,			\
1771 	.exit_d0i3 = iwl_mvm_exit_d0i3,
1772 #else /* CONFIG_PM */
1773 #define IWL_MVM_D0I3_OPS
1774 #endif /* CONFIG_PM */
1775 
1776 #define IWL_MVM_COMMON_OPS					\
1777 	/* these could be differentiated */			\
1778 	.async_cb = iwl_mvm_async_cb,				\
1779 	.queue_full = iwl_mvm_stop_sw_queue,			\
1780 	.queue_not_full = iwl_mvm_wake_sw_queue,		\
1781 	.hw_rf_kill = iwl_mvm_set_hw_rfkill_state,		\
1782 	.free_skb = iwl_mvm_free_skb,				\
1783 	.nic_error = iwl_mvm_nic_error,				\
1784 	.cmd_queue_full = iwl_mvm_cmd_queue_full,		\
1785 	.nic_config = iwl_mvm_nic_config,			\
1786 	IWL_MVM_D0I3_OPS					\
1787 	/* as we only register one, these MUST be common! */	\
1788 	.start = iwl_op_mode_mvm_start,				\
1789 	.stop = iwl_op_mode_mvm_stop
1790 
1791 static const struct iwl_op_mode_ops iwl_mvm_ops = {
1792 	IWL_MVM_COMMON_OPS,
1793 	.rx = iwl_mvm_rx,
1794 };
1795 
1796 static void iwl_mvm_rx_mq_rss(struct iwl_op_mode *op_mode,
1797 			      struct napi_struct *napi,
1798 			      struct iwl_rx_cmd_buffer *rxb,
1799 			      unsigned int queue)
1800 {
1801 	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1802 	struct iwl_rx_packet *pkt = rxb_addr(rxb);
1803 	u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd);
1804 
1805 	if (unlikely(cmd == WIDE_ID(LEGACY_GROUP, FRAME_RELEASE)))
1806 		iwl_mvm_rx_frame_release(mvm, napi, rxb, queue);
1807 	else if (unlikely(cmd == WIDE_ID(DATA_PATH_GROUP,
1808 					 RX_QUEUES_NOTIFICATION)))
1809 		iwl_mvm_rx_queue_notif(mvm, rxb, queue);
1810 	else if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD)))
1811 		iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, queue);
1812 }
1813 
1814 static const struct iwl_op_mode_ops iwl_mvm_ops_mq = {
1815 	IWL_MVM_COMMON_OPS,
1816 	.rx = iwl_mvm_rx_mq,
1817 	.rx_rss = iwl_mvm_rx_mq_rss,
1818 };
1819