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  *
12  * This program is free software; you can redistribute it and/or modify
13  * it under the terms of version 2 of the GNU General Public License as
14  * published by the Free Software Foundation.
15  *
16  * This program is distributed in the hope that it will be useful, but
17  * WITHOUT ANY WARRANTY; without even the implied warranty of
18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
19  * General Public License for more details.
20  *
21  * You should have received a copy of the GNU General Public License
22  * along with this program; if not, write to the Free Software
23  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
24  * USA
25  *
26  * The full GNU General Public License is included in this distribution
27  * in the file called COPYING.
28  *
29  * Contact Information:
30  *  Intel Linux Wireless <linuxwifi@intel.com>
31  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
32  *
33  * BSD LICENSE
34  *
35  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
36  * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
37  * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
38  * All rights reserved.
39  *
40  * Redistribution and use in source and binary forms, with or without
41  * modification, are permitted provided that the following conditions
42  * are met:
43  *
44  *  * Redistributions of source code must retain the above copyright
45  *    notice, this list of conditions and the following disclaimer.
46  *  * Redistributions in binary form must reproduce the above copyright
47  *    notice, this list of conditions and the following disclaimer in
48  *    the documentation and/or other materials provided with the
49  *    distribution.
50  *  * Neither the name Intel Corporation nor the names of its
51  *    contributors may be used to endorse or promote products derived
52  *    from this software without specific prior written permission.
53  *
54  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
55  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
56  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
57  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
58  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
59  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
60  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
61  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
62  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
63  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
64  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
65  *
66  *****************************************************************************/
67 #include <linux/module.h>
68 #include <linux/vmalloc.h>
69 #include <net/mac80211.h>
70 
71 #include "fw/notif-wait.h"
72 #include "iwl-trans.h"
73 #include "iwl-op-mode.h"
74 #include "fw/img.h"
75 #include "iwl-debug.h"
76 #include "iwl-drv.h"
77 #include "iwl-modparams.h"
78 #include "mvm.h"
79 #include "iwl-phy-db.h"
80 #include "iwl-eeprom-parse.h"
81 #include "iwl-csr.h"
82 #include "iwl-io.h"
83 #include "iwl-prph.h"
84 #include "rs.h"
85 #include "fw/api/scan.h"
86 #include "time-event.h"
87 #include "fw-api.h"
88 #include "fw/api/scan.h"
89 
90 #define DRV_DESCRIPTION	"The new Intel(R) wireless AGN driver for Linux"
91 MODULE_DESCRIPTION(DRV_DESCRIPTION);
92 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
93 MODULE_LICENSE("GPL");
94 
95 static const struct iwl_op_mode_ops iwl_mvm_ops;
96 static const struct iwl_op_mode_ops iwl_mvm_ops_mq;
97 
98 struct iwl_mvm_mod_params iwlmvm_mod_params = {
99 	.power_scheme = IWL_POWER_SCHEME_BPS,
100 	.tfd_q_hang_detect = true
101 	/* rest of fields are 0 by default */
102 };
103 
104 module_param_named(init_dbg, iwlmvm_mod_params.init_dbg, bool, S_IRUGO);
105 MODULE_PARM_DESC(init_dbg,
106 		 "set to true to debug an ASSERT in INIT fw (default: false");
107 module_param_named(power_scheme, iwlmvm_mod_params.power_scheme, int, S_IRUGO);
108 MODULE_PARM_DESC(power_scheme,
109 		 "power management scheme: 1-active, 2-balanced, 3-low power, default: 2");
110 module_param_named(tfd_q_hang_detect, iwlmvm_mod_params.tfd_q_hang_detect,
111 		   bool, S_IRUGO);
112 MODULE_PARM_DESC(tfd_q_hang_detect,
113 		 "TFD queues hang detection (default: true");
114 
115 /*
116  * module init and exit functions
117  */
118 static int __init iwl_mvm_init(void)
119 {
120 	int ret;
121 
122 	ret = iwl_mvm_rate_control_register();
123 	if (ret) {
124 		pr_err("Unable to register rate control algorithm: %d\n", ret);
125 		return ret;
126 	}
127 
128 	ret = iwl_opmode_register("iwlmvm", &iwl_mvm_ops);
129 
130 	if (ret) {
131 		pr_err("Unable to register MVM op_mode: %d\n", ret);
132 		iwl_mvm_rate_control_unregister();
133 	}
134 
135 	return ret;
136 }
137 module_init(iwl_mvm_init);
138 
139 static void __exit iwl_mvm_exit(void)
140 {
141 	iwl_opmode_deregister("iwlmvm");
142 	iwl_mvm_rate_control_unregister();
143 }
144 module_exit(iwl_mvm_exit);
145 
146 static void iwl_mvm_nic_config(struct iwl_op_mode *op_mode)
147 {
148 	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
149 	u8 radio_cfg_type, radio_cfg_step, radio_cfg_dash;
150 	u32 reg_val = 0;
151 	u32 phy_config = iwl_mvm_get_phy_config(mvm);
152 
153 	radio_cfg_type = (phy_config & FW_PHY_CFG_RADIO_TYPE) >>
154 			 FW_PHY_CFG_RADIO_TYPE_POS;
155 	radio_cfg_step = (phy_config & FW_PHY_CFG_RADIO_STEP) >>
156 			 FW_PHY_CFG_RADIO_STEP_POS;
157 	radio_cfg_dash = (phy_config & FW_PHY_CFG_RADIO_DASH) >>
158 			 FW_PHY_CFG_RADIO_DASH_POS;
159 
160 	/* SKU control */
161 	reg_val |= CSR_HW_REV_STEP(mvm->trans->hw_rev) <<
162 				CSR_HW_IF_CONFIG_REG_POS_MAC_STEP;
163 	reg_val |= CSR_HW_REV_DASH(mvm->trans->hw_rev) <<
164 				CSR_HW_IF_CONFIG_REG_POS_MAC_DASH;
165 
166 	/* radio configuration */
167 	reg_val |= radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE;
168 	reg_val |= radio_cfg_step << CSR_HW_IF_CONFIG_REG_POS_PHY_STEP;
169 	reg_val |= radio_cfg_dash << CSR_HW_IF_CONFIG_REG_POS_PHY_DASH;
170 
171 	WARN_ON((radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE) &
172 		 ~CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE);
173 
174 	/*
175 	 * TODO: Bits 7-8 of CSR in 8000 HW family and higher set the ADC
176 	 * sampling, and shouldn't be set to any non-zero value.
177 	 * The same is supposed to be true of the other HW, but unsetting
178 	 * them (such as the 7260) causes automatic tests to fail on seemingly
179 	 * unrelated errors. Need to further investigate this, but for now
180 	 * we'll separate cases.
181 	 */
182 	if (mvm->trans->cfg->device_family < IWL_DEVICE_FAMILY_8000)
183 		reg_val |= CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI;
184 
185 	iwl_trans_set_bits_mask(mvm->trans, CSR_HW_IF_CONFIG_REG,
186 				CSR_HW_IF_CONFIG_REG_MSK_MAC_DASH |
187 				CSR_HW_IF_CONFIG_REG_MSK_MAC_STEP |
188 				CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE |
189 				CSR_HW_IF_CONFIG_REG_MSK_PHY_STEP |
190 				CSR_HW_IF_CONFIG_REG_MSK_PHY_DASH |
191 				CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI |
192 				CSR_HW_IF_CONFIG_REG_BIT_MAC_SI,
193 				reg_val);
194 
195 	IWL_DEBUG_INFO(mvm, "Radio type=0x%x-0x%x-0x%x\n", radio_cfg_type,
196 		       radio_cfg_step, radio_cfg_dash);
197 
198 	/*
199 	 * W/A : NIC is stuck in a reset state after Early PCIe power off
200 	 * (PCIe power is lost before PERST# is asserted), causing ME FW
201 	 * to lose ownership and not being able to obtain it back.
202 	 */
203 	if (!mvm->trans->cfg->apmg_not_supported)
204 		iwl_set_bits_mask_prph(mvm->trans, APMG_PS_CTRL_REG,
205 				       APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS,
206 				       ~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS);
207 }
208 
209 /**
210  * enum iwl_rx_handler_context context for Rx handler
211  * @RX_HANDLER_SYNC : this means that it will be called in the Rx path
212  *	which can't acquire mvm->mutex.
213  * @RX_HANDLER_ASYNC_LOCKED : If the handler needs to hold mvm->mutex
214  *	(and only in this case!), it should be set as ASYNC. In that case,
215  *	it will be called from a worker with mvm->mutex held.
216  * @RX_HANDLER_ASYNC_UNLOCKED : in case the handler needs to lock the
217  *	mutex itself, it will be called from a worker without mvm->mutex held.
218  */
219 enum iwl_rx_handler_context {
220 	RX_HANDLER_SYNC,
221 	RX_HANDLER_ASYNC_LOCKED,
222 	RX_HANDLER_ASYNC_UNLOCKED,
223 };
224 
225 /**
226  * struct iwl_rx_handlers handler for FW notification
227  * @cmd_id: command id
228  * @context: see &iwl_rx_handler_context
229  * @fn: the function is called when notification is received
230  */
231 struct iwl_rx_handlers {
232 	u16 cmd_id;
233 	enum iwl_rx_handler_context context;
234 	void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb);
235 };
236 
237 #define RX_HANDLER(_cmd_id, _fn, _context)	\
238 	{ .cmd_id = _cmd_id, .fn = _fn, .context = _context }
239 #define RX_HANDLER_GRP(_grp, _cmd, _fn, _context)	\
240 	{ .cmd_id = WIDE_ID(_grp, _cmd), .fn = _fn, .context = _context }
241 
242 /*
243  * Handlers for fw notifications
244  * Convention: RX_HANDLER(CMD_NAME, iwl_mvm_rx_CMD_NAME
245  * This list should be in order of frequency for performance purposes.
246  *
247  * The handler can be one from three contexts, see &iwl_rx_handler_context
248  */
249 static const struct iwl_rx_handlers iwl_mvm_rx_handlers[] = {
250 	RX_HANDLER(TX_CMD, iwl_mvm_rx_tx_cmd, RX_HANDLER_SYNC),
251 	RX_HANDLER(BA_NOTIF, iwl_mvm_rx_ba_notif, RX_HANDLER_SYNC),
252 
253 	RX_HANDLER(BT_PROFILE_NOTIFICATION, iwl_mvm_rx_bt_coex_notif,
254 		   RX_HANDLER_ASYNC_LOCKED),
255 	RX_HANDLER(BEACON_NOTIFICATION, iwl_mvm_rx_beacon_notif,
256 		   RX_HANDLER_ASYNC_LOCKED),
257 	RX_HANDLER(STATISTICS_NOTIFICATION, iwl_mvm_rx_statistics,
258 		   RX_HANDLER_ASYNC_LOCKED),
259 
260 	RX_HANDLER(BA_WINDOW_STATUS_NOTIFICATION_ID,
261 		   iwl_mvm_window_status_notif, RX_HANDLER_SYNC),
262 
263 	RX_HANDLER(TIME_EVENT_NOTIFICATION, iwl_mvm_rx_time_event_notif,
264 		   RX_HANDLER_SYNC),
265 	RX_HANDLER(MCC_CHUB_UPDATE_CMD, iwl_mvm_rx_chub_update_mcc,
266 		   RX_HANDLER_ASYNC_LOCKED),
267 
268 	RX_HANDLER(EOSP_NOTIFICATION, iwl_mvm_rx_eosp_notif, RX_HANDLER_SYNC),
269 
270 	RX_HANDLER(SCAN_ITERATION_COMPLETE,
271 		   iwl_mvm_rx_lmac_scan_iter_complete_notif, RX_HANDLER_SYNC),
272 	RX_HANDLER(SCAN_OFFLOAD_COMPLETE,
273 		   iwl_mvm_rx_lmac_scan_complete_notif,
274 		   RX_HANDLER_ASYNC_LOCKED),
275 	RX_HANDLER(MATCH_FOUND_NOTIFICATION, iwl_mvm_rx_scan_match_found,
276 		   RX_HANDLER_SYNC),
277 	RX_HANDLER(SCAN_COMPLETE_UMAC, iwl_mvm_rx_umac_scan_complete_notif,
278 		   RX_HANDLER_ASYNC_LOCKED),
279 	RX_HANDLER(SCAN_ITERATION_COMPLETE_UMAC,
280 		   iwl_mvm_rx_umac_scan_iter_complete_notif, RX_HANDLER_SYNC),
281 
282 	RX_HANDLER(CARD_STATE_NOTIFICATION, iwl_mvm_rx_card_state_notif,
283 		   RX_HANDLER_SYNC),
284 
285 	RX_HANDLER(MISSED_BEACONS_NOTIFICATION, iwl_mvm_rx_missed_beacons_notif,
286 		   RX_HANDLER_SYNC),
287 
288 	RX_HANDLER(REPLY_ERROR, iwl_mvm_rx_fw_error, RX_HANDLER_SYNC),
289 	RX_HANDLER(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION,
290 		   iwl_mvm_power_uapsd_misbehaving_ap_notif, RX_HANDLER_SYNC),
291 	RX_HANDLER(DTS_MEASUREMENT_NOTIFICATION, iwl_mvm_temp_notif,
292 		   RX_HANDLER_ASYNC_LOCKED),
293 	RX_HANDLER_GRP(PHY_OPS_GROUP, DTS_MEASUREMENT_NOTIF_WIDE,
294 		       iwl_mvm_temp_notif, RX_HANDLER_ASYNC_UNLOCKED),
295 	RX_HANDLER_GRP(PHY_OPS_GROUP, CT_KILL_NOTIFICATION,
296 		       iwl_mvm_ct_kill_notif, RX_HANDLER_SYNC),
297 
298 	RX_HANDLER(TDLS_CHANNEL_SWITCH_NOTIFICATION, iwl_mvm_rx_tdls_notif,
299 		   RX_HANDLER_ASYNC_LOCKED),
300 	RX_HANDLER(MFUART_LOAD_NOTIFICATION, iwl_mvm_rx_mfuart_notif,
301 		   RX_HANDLER_SYNC),
302 	RX_HANDLER(TOF_NOTIFICATION, iwl_mvm_tof_resp_handler,
303 		   RX_HANDLER_ASYNC_LOCKED),
304 	RX_HANDLER_GRP(DEBUG_GROUP, MFU_ASSERT_DUMP_NTF,
305 		       iwl_mvm_mfu_assert_dump_notif, RX_HANDLER_SYNC),
306 	RX_HANDLER_GRP(PROT_OFFLOAD_GROUP, STORED_BEACON_NTF,
307 		       iwl_mvm_rx_stored_beacon_notif, RX_HANDLER_SYNC),
308 	RX_HANDLER_GRP(DATA_PATH_GROUP, MU_GROUP_MGMT_NOTIF,
309 		       iwl_mvm_mu_mimo_grp_notif, RX_HANDLER_SYNC),
310 	RX_HANDLER_GRP(DATA_PATH_GROUP, STA_PM_NOTIF,
311 		       iwl_mvm_sta_pm_notif, RX_HANDLER_SYNC),
312 };
313 #undef RX_HANDLER
314 #undef RX_HANDLER_GRP
315 
316 /* Please keep this array *SORTED* by hex value.
317  * Access is done through binary search
318  */
319 static const struct iwl_hcmd_names iwl_mvm_legacy_names[] = {
320 	HCMD_NAME(MVM_ALIVE),
321 	HCMD_NAME(REPLY_ERROR),
322 	HCMD_NAME(ECHO_CMD),
323 	HCMD_NAME(INIT_COMPLETE_NOTIF),
324 	HCMD_NAME(PHY_CONTEXT_CMD),
325 	HCMD_NAME(DBG_CFG),
326 	HCMD_NAME(SCAN_CFG_CMD),
327 	HCMD_NAME(SCAN_REQ_UMAC),
328 	HCMD_NAME(SCAN_ABORT_UMAC),
329 	HCMD_NAME(SCAN_COMPLETE_UMAC),
330 	HCMD_NAME(TOF_CMD),
331 	HCMD_NAME(TOF_NOTIFICATION),
332 	HCMD_NAME(BA_WINDOW_STATUS_NOTIFICATION_ID),
333 	HCMD_NAME(ADD_STA_KEY),
334 	HCMD_NAME(ADD_STA),
335 	HCMD_NAME(REMOVE_STA),
336 	HCMD_NAME(FW_GET_ITEM_CMD),
337 	HCMD_NAME(TX_CMD),
338 	HCMD_NAME(SCD_QUEUE_CFG),
339 	HCMD_NAME(TXPATH_FLUSH),
340 	HCMD_NAME(MGMT_MCAST_KEY),
341 	HCMD_NAME(WEP_KEY),
342 	HCMD_NAME(SHARED_MEM_CFG),
343 	HCMD_NAME(TDLS_CHANNEL_SWITCH_CMD),
344 	HCMD_NAME(MAC_CONTEXT_CMD),
345 	HCMD_NAME(TIME_EVENT_CMD),
346 	HCMD_NAME(TIME_EVENT_NOTIFICATION),
347 	HCMD_NAME(BINDING_CONTEXT_CMD),
348 	HCMD_NAME(TIME_QUOTA_CMD),
349 	HCMD_NAME(NON_QOS_TX_COUNTER_CMD),
350 	HCMD_NAME(LEDS_CMD),
351 	HCMD_NAME(LQ_CMD),
352 	HCMD_NAME(FW_PAGING_BLOCK_CMD),
353 	HCMD_NAME(SCAN_OFFLOAD_REQUEST_CMD),
354 	HCMD_NAME(SCAN_OFFLOAD_ABORT_CMD),
355 	HCMD_NAME(HOT_SPOT_CMD),
356 	HCMD_NAME(SCAN_OFFLOAD_PROFILES_QUERY_CMD),
357 	HCMD_NAME(BT_COEX_UPDATE_REDUCED_TXP),
358 	HCMD_NAME(BT_COEX_CI),
359 	HCMD_NAME(PHY_CONFIGURATION_CMD),
360 	HCMD_NAME(CALIB_RES_NOTIF_PHY_DB),
361 	HCMD_NAME(PHY_DB_CMD),
362 	HCMD_NAME(SCAN_OFFLOAD_COMPLETE),
363 	HCMD_NAME(SCAN_OFFLOAD_UPDATE_PROFILES_CMD),
364 	HCMD_NAME(POWER_TABLE_CMD),
365 	HCMD_NAME(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION),
366 	HCMD_NAME(REPLY_THERMAL_MNG_BACKOFF),
367 	HCMD_NAME(DC2DC_CONFIG_CMD),
368 	HCMD_NAME(NVM_ACCESS_CMD),
369 	HCMD_NAME(BEACON_NOTIFICATION),
370 	HCMD_NAME(BEACON_TEMPLATE_CMD),
371 	HCMD_NAME(TX_ANT_CONFIGURATION_CMD),
372 	HCMD_NAME(BT_CONFIG),
373 	HCMD_NAME(STATISTICS_CMD),
374 	HCMD_NAME(STATISTICS_NOTIFICATION),
375 	HCMD_NAME(EOSP_NOTIFICATION),
376 	HCMD_NAME(REDUCE_TX_POWER_CMD),
377 	HCMD_NAME(CARD_STATE_NOTIFICATION),
378 	HCMD_NAME(MISSED_BEACONS_NOTIFICATION),
379 	HCMD_NAME(TDLS_CONFIG_CMD),
380 	HCMD_NAME(MAC_PM_POWER_TABLE),
381 	HCMD_NAME(TDLS_CHANNEL_SWITCH_NOTIFICATION),
382 	HCMD_NAME(MFUART_LOAD_NOTIFICATION),
383 	HCMD_NAME(RSS_CONFIG_CMD),
384 	HCMD_NAME(SCAN_ITERATION_COMPLETE_UMAC),
385 	HCMD_NAME(REPLY_RX_PHY_CMD),
386 	HCMD_NAME(REPLY_RX_MPDU_CMD),
387 	HCMD_NAME(FRAME_RELEASE),
388 	HCMD_NAME(BA_NOTIF),
389 	HCMD_NAME(MCC_UPDATE_CMD),
390 	HCMD_NAME(MCC_CHUB_UPDATE_CMD),
391 	HCMD_NAME(MARKER_CMD),
392 	HCMD_NAME(BT_PROFILE_NOTIFICATION),
393 	HCMD_NAME(BCAST_FILTER_CMD),
394 	HCMD_NAME(MCAST_FILTER_CMD),
395 	HCMD_NAME(REPLY_SF_CFG_CMD),
396 	HCMD_NAME(REPLY_BEACON_FILTERING_CMD),
397 	HCMD_NAME(D3_CONFIG_CMD),
398 	HCMD_NAME(PROT_OFFLOAD_CONFIG_CMD),
399 	HCMD_NAME(OFFLOADS_QUERY_CMD),
400 	HCMD_NAME(REMOTE_WAKE_CONFIG_CMD),
401 	HCMD_NAME(MATCH_FOUND_NOTIFICATION),
402 	HCMD_NAME(DTS_MEASUREMENT_NOTIFICATION),
403 	HCMD_NAME(WOWLAN_PATTERNS),
404 	HCMD_NAME(WOWLAN_CONFIGURATION),
405 	HCMD_NAME(WOWLAN_TSC_RSC_PARAM),
406 	HCMD_NAME(WOWLAN_TKIP_PARAM),
407 	HCMD_NAME(WOWLAN_KEK_KCK_MATERIAL),
408 	HCMD_NAME(WOWLAN_GET_STATUSES),
409 	HCMD_NAME(SCAN_ITERATION_COMPLETE),
410 	HCMD_NAME(D0I3_END_CMD),
411 	HCMD_NAME(LTR_CONFIG),
412 };
413 
414 /* Please keep this array *SORTED* by hex value.
415  * Access is done through binary search
416  */
417 static const struct iwl_hcmd_names iwl_mvm_system_names[] = {
418 	HCMD_NAME(SHARED_MEM_CFG_CMD),
419 	HCMD_NAME(INIT_EXTENDED_CFG_CMD),
420 };
421 
422 /* Please keep this array *SORTED* by hex value.
423  * Access is done through binary search
424  */
425 static const struct iwl_hcmd_names iwl_mvm_mac_conf_names[] = {
426 	HCMD_NAME(LINK_QUALITY_MEASUREMENT_CMD),
427 	HCMD_NAME(LINK_QUALITY_MEASUREMENT_COMPLETE_NOTIF),
428 	HCMD_NAME(CHANNEL_SWITCH_NOA_NOTIF),
429 };
430 
431 /* Please keep this array *SORTED* by hex value.
432  * Access is done through binary search
433  */
434 static const struct iwl_hcmd_names iwl_mvm_phy_names[] = {
435 	HCMD_NAME(CMD_DTS_MEASUREMENT_TRIGGER_WIDE),
436 	HCMD_NAME(CTDP_CONFIG_CMD),
437 	HCMD_NAME(TEMP_REPORTING_THRESHOLDS_CMD),
438 	HCMD_NAME(GEO_TX_POWER_LIMIT),
439 	HCMD_NAME(CT_KILL_NOTIFICATION),
440 	HCMD_NAME(DTS_MEASUREMENT_NOTIF_WIDE),
441 };
442 
443 /* Please keep this array *SORTED* by hex value.
444  * Access is done through binary search
445  */
446 static const struct iwl_hcmd_names iwl_mvm_data_path_names[] = {
447 	HCMD_NAME(DQA_ENABLE_CMD),
448 	HCMD_NAME(UPDATE_MU_GROUPS_CMD),
449 	HCMD_NAME(TRIGGER_RX_QUEUES_NOTIF_CMD),
450 	HCMD_NAME(STA_PM_NOTIF),
451 	HCMD_NAME(MU_GROUP_MGMT_NOTIF),
452 	HCMD_NAME(RX_QUEUES_NOTIFICATION),
453 };
454 
455 /* Please keep this array *SORTED* by hex value.
456  * Access is done through binary search
457  */
458 static const struct iwl_hcmd_names iwl_mvm_debug_names[] = {
459 	HCMD_NAME(MFU_ASSERT_DUMP_NTF),
460 };
461 
462 /* Please keep this array *SORTED* by hex value.
463  * Access is done through binary search
464  */
465 static const struct iwl_hcmd_names iwl_mvm_prot_offload_names[] = {
466 	HCMD_NAME(STORED_BEACON_NTF),
467 };
468 
469 /* Please keep this array *SORTED* by hex value.
470  * Access is done through binary search
471  */
472 static const struct iwl_hcmd_names iwl_mvm_regulatory_and_nvm_names[] = {
473 	HCMD_NAME(NVM_ACCESS_COMPLETE),
474 	HCMD_NAME(NVM_GET_INFO),
475 };
476 
477 static const struct iwl_hcmd_arr iwl_mvm_groups[] = {
478 	[LEGACY_GROUP] = HCMD_ARR(iwl_mvm_legacy_names),
479 	[LONG_GROUP] = HCMD_ARR(iwl_mvm_legacy_names),
480 	[SYSTEM_GROUP] = HCMD_ARR(iwl_mvm_system_names),
481 	[MAC_CONF_GROUP] = HCMD_ARR(iwl_mvm_mac_conf_names),
482 	[PHY_OPS_GROUP] = HCMD_ARR(iwl_mvm_phy_names),
483 	[DATA_PATH_GROUP] = HCMD_ARR(iwl_mvm_data_path_names),
484 	[PROT_OFFLOAD_GROUP] = HCMD_ARR(iwl_mvm_prot_offload_names),
485 	[REGULATORY_AND_NVM_GROUP] =
486 		HCMD_ARR(iwl_mvm_regulatory_and_nvm_names),
487 };
488 
489 /* this forward declaration can avoid to export the function */
490 static void iwl_mvm_async_handlers_wk(struct work_struct *wk);
491 static void iwl_mvm_d0i3_exit_work(struct work_struct *wk);
492 
493 static u32 calc_min_backoff(struct iwl_trans *trans, const struct iwl_cfg *cfg)
494 {
495 	const struct iwl_pwr_tx_backoff *pwr_tx_backoff = cfg->pwr_tx_backoffs;
496 
497 	if (!pwr_tx_backoff)
498 		return 0;
499 
500 	while (pwr_tx_backoff->pwr) {
501 		if (trans->dflt_pwr_limit >= pwr_tx_backoff->pwr)
502 			return pwr_tx_backoff->backoff;
503 
504 		pwr_tx_backoff++;
505 	}
506 
507 	return 0;
508 }
509 
510 static void iwl_mvm_tx_unblock_dwork(struct work_struct *work)
511 {
512 	struct iwl_mvm *mvm =
513 		container_of(work, struct iwl_mvm, cs_tx_unblock_dwork.work);
514 	struct ieee80211_vif *tx_blocked_vif;
515 	struct iwl_mvm_vif *mvmvif;
516 
517 	mutex_lock(&mvm->mutex);
518 
519 	tx_blocked_vif =
520 		rcu_dereference_protected(mvm->csa_tx_blocked_vif,
521 					  lockdep_is_held(&mvm->mutex));
522 
523 	if (!tx_blocked_vif)
524 		goto unlock;
525 
526 	mvmvif = iwl_mvm_vif_from_mac80211(tx_blocked_vif);
527 	iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, false);
528 	RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
529 unlock:
530 	mutex_unlock(&mvm->mutex);
531 }
532 
533 static int iwl_mvm_fwrt_dump_start(void *ctx)
534 {
535 	struct iwl_mvm *mvm = ctx;
536 	int ret;
537 
538 	ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_FW_DBG_COLLECT);
539 	if (ret)
540 		return ret;
541 
542 	mutex_lock(&mvm->mutex);
543 
544 	return 0;
545 }
546 
547 static void iwl_mvm_fwrt_dump_end(void *ctx)
548 {
549 	struct iwl_mvm *mvm = ctx;
550 
551 	mutex_unlock(&mvm->mutex);
552 
553 	iwl_mvm_unref(mvm, IWL_MVM_REF_FW_DBG_COLLECT);
554 }
555 
556 static const struct iwl_fw_runtime_ops iwl_mvm_fwrt_ops = {
557 	.dump_start = iwl_mvm_fwrt_dump_start,
558 	.dump_end = iwl_mvm_fwrt_dump_end,
559 };
560 
561 static struct iwl_op_mode *
562 iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg,
563 		      const struct iwl_fw *fw, struct dentry *dbgfs_dir)
564 {
565 	struct ieee80211_hw *hw;
566 	struct iwl_op_mode *op_mode;
567 	struct iwl_mvm *mvm;
568 	struct iwl_trans_config trans_cfg = {};
569 	static const u8 no_reclaim_cmds[] = {
570 		TX_CMD,
571 	};
572 	int err, scan_size;
573 	u32 min_backoff;
574 
575 	/*
576 	 * We use IWL_MVM_STATION_COUNT to check the validity of the station
577 	 * index all over the driver - check that its value corresponds to the
578 	 * array size.
579 	 */
580 	BUILD_BUG_ON(ARRAY_SIZE(mvm->fw_id_to_mac_id) != IWL_MVM_STATION_COUNT);
581 
582 	/********************************
583 	 * 1. Allocating and configuring HW data
584 	 ********************************/
585 	hw = ieee80211_alloc_hw(sizeof(struct iwl_op_mode) +
586 				sizeof(struct iwl_mvm),
587 				&iwl_mvm_hw_ops);
588 	if (!hw)
589 		return NULL;
590 
591 	if (cfg->max_rx_agg_size)
592 		hw->max_rx_aggregation_subframes = cfg->max_rx_agg_size;
593 
594 	if (cfg->max_tx_agg_size)
595 		hw->max_tx_aggregation_subframes = cfg->max_tx_agg_size;
596 
597 	op_mode = hw->priv;
598 
599 	mvm = IWL_OP_MODE_GET_MVM(op_mode);
600 	mvm->dev = trans->dev;
601 	mvm->trans = trans;
602 	mvm->cfg = cfg;
603 	mvm->fw = fw;
604 	mvm->hw = hw;
605 
606 	iwl_fw_runtime_init(&mvm->fwrt, trans, fw, &iwl_mvm_fwrt_ops, mvm);
607 
608 	mvm->init_status = 0;
609 
610 	if (iwl_mvm_has_new_rx_api(mvm)) {
611 		op_mode->ops = &iwl_mvm_ops_mq;
612 		trans->rx_mpdu_cmd_hdr_size = sizeof(struct iwl_rx_mpdu_desc);
613 	} else {
614 		op_mode->ops = &iwl_mvm_ops;
615 		trans->rx_mpdu_cmd_hdr_size =
616 			sizeof(struct iwl_rx_mpdu_res_start);
617 
618 		if (WARN_ON(trans->num_rx_queues > 1))
619 			goto out_free;
620 	}
621 
622 	mvm->fw_restart = iwlwifi_mod_params.fw_restart ? -1 : 0;
623 
624 	mvm->aux_queue = IWL_MVM_DQA_AUX_QUEUE;
625 	mvm->probe_queue = IWL_MVM_DQA_AP_PROBE_RESP_QUEUE;
626 	mvm->p2p_dev_queue = IWL_MVM_DQA_P2P_DEVICE_QUEUE;
627 
628 	mvm->sf_state = SF_UNINIT;
629 	if (iwl_mvm_has_unified_ucode(mvm))
630 		iwl_fw_set_current_image(&mvm->fwrt, IWL_UCODE_REGULAR);
631 	else
632 		iwl_fw_set_current_image(&mvm->fwrt, IWL_UCODE_INIT);
633 	mvm->drop_bcn_ap_mode = true;
634 
635 	mutex_init(&mvm->mutex);
636 	mutex_init(&mvm->d0i3_suspend_mutex);
637 	spin_lock_init(&mvm->async_handlers_lock);
638 	INIT_LIST_HEAD(&mvm->time_event_list);
639 	INIT_LIST_HEAD(&mvm->aux_roc_te_list);
640 	INIT_LIST_HEAD(&mvm->async_handlers_list);
641 	spin_lock_init(&mvm->time_event_lock);
642 	spin_lock_init(&mvm->queue_info_lock);
643 
644 	INIT_WORK(&mvm->async_handlers_wk, iwl_mvm_async_handlers_wk);
645 	INIT_WORK(&mvm->roc_done_wk, iwl_mvm_roc_done_wk);
646 	INIT_WORK(&mvm->d0i3_exit_work, iwl_mvm_d0i3_exit_work);
647 	INIT_DELAYED_WORK(&mvm->tdls_cs.dwork, iwl_mvm_tdls_ch_switch_work);
648 	INIT_DELAYED_WORK(&mvm->scan_timeout_dwork, iwl_mvm_scan_timeout_wk);
649 	INIT_WORK(&mvm->add_stream_wk, iwl_mvm_add_new_dqa_stream_wk);
650 
651 	spin_lock_init(&mvm->d0i3_tx_lock);
652 	spin_lock_init(&mvm->refs_lock);
653 	skb_queue_head_init(&mvm->d0i3_tx);
654 	init_waitqueue_head(&mvm->d0i3_exit_waitq);
655 	init_waitqueue_head(&mvm->rx_sync_waitq);
656 
657 	atomic_set(&mvm->queue_sync_counter, 0);
658 
659 	SET_IEEE80211_DEV(mvm->hw, mvm->trans->dev);
660 
661 	INIT_DELAYED_WORK(&mvm->cs_tx_unblock_dwork, iwl_mvm_tx_unblock_dwork);
662 
663 	/*
664 	 * Populate the state variables that the transport layer needs
665 	 * to know about.
666 	 */
667 	trans_cfg.op_mode = op_mode;
668 	trans_cfg.no_reclaim_cmds = no_reclaim_cmds;
669 	trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds);
670 	switch (iwlwifi_mod_params.amsdu_size) {
671 	case IWL_AMSDU_DEF:
672 	case IWL_AMSDU_4K:
673 		trans_cfg.rx_buf_size = IWL_AMSDU_4K;
674 		break;
675 	case IWL_AMSDU_8K:
676 		trans_cfg.rx_buf_size = IWL_AMSDU_8K;
677 		break;
678 	case IWL_AMSDU_12K:
679 		trans_cfg.rx_buf_size = IWL_AMSDU_12K;
680 		break;
681 	default:
682 		pr_err("%s: Unsupported amsdu_size: %d\n", KBUILD_MODNAME,
683 		       iwlwifi_mod_params.amsdu_size);
684 		trans_cfg.rx_buf_size = IWL_AMSDU_4K;
685 	}
686 
687 	/* the hardware splits the A-MSDU */
688 	if (mvm->cfg->mq_rx_supported)
689 		trans_cfg.rx_buf_size = IWL_AMSDU_4K;
690 
691 	trans->wide_cmd_header = true;
692 	trans_cfg.bc_table_dword = true;
693 
694 	trans_cfg.command_groups = iwl_mvm_groups;
695 	trans_cfg.command_groups_size = ARRAY_SIZE(iwl_mvm_groups);
696 
697 	trans_cfg.cmd_queue = IWL_MVM_DQA_CMD_QUEUE;
698 	trans_cfg.cmd_fifo = IWL_MVM_TX_FIFO_CMD;
699 	trans_cfg.scd_set_active = true;
700 
701 	trans_cfg.cb_data_offs = offsetof(struct ieee80211_tx_info,
702 					  driver_data[2]);
703 
704 	trans_cfg.sdio_adma_addr = fw->sdio_adma_addr;
705 	trans_cfg.sw_csum_tx = IWL_MVM_SW_TX_CSUM_OFFLOAD;
706 
707 	/* Set a short watchdog for the command queue */
708 	trans_cfg.cmd_q_wdg_timeout =
709 		iwl_mvm_get_wd_timeout(mvm, NULL, false, true);
710 
711 	snprintf(mvm->hw->wiphy->fw_version,
712 		 sizeof(mvm->hw->wiphy->fw_version),
713 		 "%s", fw->fw_version);
714 
715 	/* Configure transport layer */
716 	iwl_trans_configure(mvm->trans, &trans_cfg);
717 
718 	trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD;
719 	trans->dbg_dest_tlv = mvm->fw->dbg_dest_tlv;
720 	trans->dbg_dest_reg_num = mvm->fw->dbg_dest_reg_num;
721 	memcpy(trans->dbg_conf_tlv, mvm->fw->dbg_conf_tlv,
722 	       sizeof(trans->dbg_conf_tlv));
723 	trans->dbg_trigger_tlv = mvm->fw->dbg_trigger_tlv;
724 
725 	/* set up notification wait support */
726 	iwl_notification_wait_init(&mvm->notif_wait);
727 
728 	/* Init phy db */
729 	mvm->phy_db = iwl_phy_db_init(trans);
730 	if (!mvm->phy_db) {
731 		IWL_ERR(mvm, "Cannot init phy_db\n");
732 		goto out_free;
733 	}
734 
735 	IWL_INFO(mvm, "Detected %s, REV=0x%X\n",
736 		 mvm->cfg->name, mvm->trans->hw_rev);
737 
738 	if (iwlwifi_mod_params.nvm_file)
739 		mvm->nvm_file_name = iwlwifi_mod_params.nvm_file;
740 	else
741 		IWL_DEBUG_EEPROM(mvm->trans->dev,
742 				 "working without external nvm file\n");
743 
744 	err = iwl_trans_start_hw(mvm->trans);
745 	if (err)
746 		goto out_free;
747 
748 	mutex_lock(&mvm->mutex);
749 	iwl_mvm_ref(mvm, IWL_MVM_REF_INIT_UCODE);
750 	err = iwl_run_init_mvm_ucode(mvm, true);
751 	if (!iwlmvm_mod_params.init_dbg)
752 		iwl_mvm_stop_device(mvm);
753 	iwl_mvm_unref(mvm, IWL_MVM_REF_INIT_UCODE);
754 	mutex_unlock(&mvm->mutex);
755 	if (err < 0) {
756 		IWL_ERR(mvm, "Failed to run INIT ucode: %d\n", err);
757 		goto out_free;
758 	}
759 
760 	scan_size = iwl_mvm_scan_size(mvm);
761 
762 	mvm->scan_cmd = kmalloc(scan_size, GFP_KERNEL);
763 	if (!mvm->scan_cmd)
764 		goto out_free;
765 
766 	/* Set EBS as successful as long as not stated otherwise by the FW. */
767 	mvm->last_ebs_successful = true;
768 
769 	err = iwl_mvm_mac_setup_register(mvm);
770 	if (err)
771 		goto out_free;
772 	mvm->hw_registered = true;
773 
774 	min_backoff = calc_min_backoff(trans, cfg);
775 	iwl_mvm_thermal_initialize(mvm, min_backoff);
776 
777 	err = iwl_mvm_dbgfs_register(mvm, dbgfs_dir);
778 	if (err)
779 		goto out_unregister;
780 
781 	if (!iwl_mvm_has_new_rx_stats_api(mvm))
782 		memset(&mvm->rx_stats_v3, 0,
783 		       sizeof(struct mvm_statistics_rx_v3));
784 	else
785 		memset(&mvm->rx_stats, 0, sizeof(struct mvm_statistics_rx));
786 
787 	/* The transport always starts with a taken reference, we can
788 	 * release it now if d0i3 is supported */
789 	if (iwl_mvm_is_d0i3_supported(mvm))
790 		iwl_trans_unref(mvm->trans);
791 
792 	iwl_mvm_tof_init(mvm);
793 
794 	return op_mode;
795 
796  out_unregister:
797 	if (iwlmvm_mod_params.init_dbg)
798 		return op_mode;
799 
800 	ieee80211_unregister_hw(mvm->hw);
801 	mvm->hw_registered = false;
802 	iwl_mvm_leds_exit(mvm);
803 	iwl_mvm_thermal_exit(mvm);
804  out_free:
805 	iwl_fw_flush_dump(&mvm->fwrt);
806 
807 	if (iwlmvm_mod_params.init_dbg)
808 		return op_mode;
809 	iwl_phy_db_free(mvm->phy_db);
810 	kfree(mvm->scan_cmd);
811 	iwl_trans_op_mode_leave(trans);
812 
813 	ieee80211_free_hw(mvm->hw);
814 	return NULL;
815 }
816 
817 static void iwl_op_mode_mvm_stop(struct iwl_op_mode *op_mode)
818 {
819 	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
820 	int i;
821 
822 	/* If d0i3 is supported, we have released the reference that
823 	 * the transport started with, so we should take it back now
824 	 * that we are leaving.
825 	 */
826 	if (iwl_mvm_is_d0i3_supported(mvm))
827 		iwl_trans_ref(mvm->trans);
828 
829 	iwl_mvm_leds_exit(mvm);
830 
831 	iwl_mvm_thermal_exit(mvm);
832 
833 	if (mvm->init_status & IWL_MVM_INIT_STATUS_REG_HW_INIT_COMPLETE) {
834 		ieee80211_unregister_hw(mvm->hw);
835 		mvm->init_status &= ~IWL_MVM_INIT_STATUS_REG_HW_INIT_COMPLETE;
836 	}
837 
838 	kfree(mvm->scan_cmd);
839 	kfree(mvm->mcast_filter_cmd);
840 	mvm->mcast_filter_cmd = NULL;
841 
842 #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_IWLWIFI_DEBUGFS)
843 	kfree(mvm->d3_resume_sram);
844 #endif
845 
846 	iwl_trans_op_mode_leave(mvm->trans);
847 
848 	iwl_phy_db_free(mvm->phy_db);
849 	mvm->phy_db = NULL;
850 
851 	kfree(mvm->nvm_data);
852 	for (i = 0; i < NVM_MAX_NUM_SECTIONS; i++)
853 		kfree(mvm->nvm_sections[i].data);
854 
855 	iwl_mvm_tof_clean(mvm);
856 
857 	mutex_destroy(&mvm->mutex);
858 	mutex_destroy(&mvm->d0i3_suspend_mutex);
859 
860 	ieee80211_free_hw(mvm->hw);
861 }
862 
863 struct iwl_async_handler_entry {
864 	struct list_head list;
865 	struct iwl_rx_cmd_buffer rxb;
866 	enum iwl_rx_handler_context context;
867 	void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb);
868 };
869 
870 void iwl_mvm_async_handlers_purge(struct iwl_mvm *mvm)
871 {
872 	struct iwl_async_handler_entry *entry, *tmp;
873 
874 	spin_lock_bh(&mvm->async_handlers_lock);
875 	list_for_each_entry_safe(entry, tmp, &mvm->async_handlers_list, list) {
876 		iwl_free_rxb(&entry->rxb);
877 		list_del(&entry->list);
878 		kfree(entry);
879 	}
880 	spin_unlock_bh(&mvm->async_handlers_lock);
881 }
882 
883 static void iwl_mvm_async_handlers_wk(struct work_struct *wk)
884 {
885 	struct iwl_mvm *mvm =
886 		container_of(wk, struct iwl_mvm, async_handlers_wk);
887 	struct iwl_async_handler_entry *entry, *tmp;
888 	LIST_HEAD(local_list);
889 
890 	/* Ensure that we are not in stop flow (check iwl_mvm_mac_stop) */
891 
892 	/*
893 	 * Sync with Rx path with a lock. Remove all the entries from this list,
894 	 * add them to a local one (lock free), and then handle them.
895 	 */
896 	spin_lock_bh(&mvm->async_handlers_lock);
897 	list_splice_init(&mvm->async_handlers_list, &local_list);
898 	spin_unlock_bh(&mvm->async_handlers_lock);
899 
900 	list_for_each_entry_safe(entry, tmp, &local_list, list) {
901 		if (entry->context == RX_HANDLER_ASYNC_LOCKED)
902 			mutex_lock(&mvm->mutex);
903 		entry->fn(mvm, &entry->rxb);
904 		iwl_free_rxb(&entry->rxb);
905 		list_del(&entry->list);
906 		if (entry->context == RX_HANDLER_ASYNC_LOCKED)
907 			mutex_unlock(&mvm->mutex);
908 		kfree(entry);
909 	}
910 }
911 
912 static inline void iwl_mvm_rx_check_trigger(struct iwl_mvm *mvm,
913 					    struct iwl_rx_packet *pkt)
914 {
915 	struct iwl_fw_dbg_trigger_tlv *trig;
916 	struct iwl_fw_dbg_trigger_cmd *cmds_trig;
917 	int i;
918 
919 	if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_FW_NOTIF))
920 		return;
921 
922 	trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_FW_NOTIF);
923 	cmds_trig = (void *)trig->data;
924 
925 	if (!iwl_fw_dbg_trigger_check_stop(&mvm->fwrt, NULL, trig))
926 		return;
927 
928 	for (i = 0; i < ARRAY_SIZE(cmds_trig->cmds); i++) {
929 		/* don't collect on CMD 0 */
930 		if (!cmds_trig->cmds[i].cmd_id)
931 			break;
932 
933 		if (cmds_trig->cmds[i].cmd_id != pkt->hdr.cmd ||
934 		    cmds_trig->cmds[i].group_id != pkt->hdr.group_id)
935 			continue;
936 
937 		iwl_fw_dbg_collect_trig(&mvm->fwrt, trig,
938 					"CMD 0x%02x.%02x received",
939 					pkt->hdr.group_id, pkt->hdr.cmd);
940 		break;
941 	}
942 }
943 
944 static void iwl_mvm_rx_common(struct iwl_mvm *mvm,
945 			      struct iwl_rx_cmd_buffer *rxb,
946 			      struct iwl_rx_packet *pkt)
947 {
948 	int i;
949 
950 	iwl_mvm_rx_check_trigger(mvm, pkt);
951 
952 	/*
953 	 * Do the notification wait before RX handlers so
954 	 * even if the RX handler consumes the RXB we have
955 	 * access to it in the notification wait entry.
956 	 */
957 	iwl_notification_wait_notify(&mvm->notif_wait, pkt);
958 
959 	for (i = 0; i < ARRAY_SIZE(iwl_mvm_rx_handlers); i++) {
960 		const struct iwl_rx_handlers *rx_h = &iwl_mvm_rx_handlers[i];
961 		struct iwl_async_handler_entry *entry;
962 
963 		if (rx_h->cmd_id != WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd))
964 			continue;
965 
966 		if (rx_h->context == RX_HANDLER_SYNC) {
967 			rx_h->fn(mvm, rxb);
968 			return;
969 		}
970 
971 		entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
972 		/* we can't do much... */
973 		if (!entry)
974 			return;
975 
976 		entry->rxb._page = rxb_steal_page(rxb);
977 		entry->rxb._offset = rxb->_offset;
978 		entry->rxb._rx_page_order = rxb->_rx_page_order;
979 		entry->fn = rx_h->fn;
980 		entry->context = rx_h->context;
981 		spin_lock(&mvm->async_handlers_lock);
982 		list_add_tail(&entry->list, &mvm->async_handlers_list);
983 		spin_unlock(&mvm->async_handlers_lock);
984 		schedule_work(&mvm->async_handlers_wk);
985 		return;
986 	}
987 
988 	iwl_fwrt_handle_notification(&mvm->fwrt, rxb);
989 }
990 
991 static void iwl_mvm_rx(struct iwl_op_mode *op_mode,
992 		       struct napi_struct *napi,
993 		       struct iwl_rx_cmd_buffer *rxb)
994 {
995 	struct iwl_rx_packet *pkt = rxb_addr(rxb);
996 	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
997 	u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd);
998 
999 	if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD)))
1000 		iwl_mvm_rx_rx_mpdu(mvm, napi, rxb);
1001 	else if (cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_PHY_CMD))
1002 		iwl_mvm_rx_rx_phy_cmd(mvm, rxb);
1003 	else
1004 		iwl_mvm_rx_common(mvm, rxb, pkt);
1005 }
1006 
1007 static void iwl_mvm_rx_mq(struct iwl_op_mode *op_mode,
1008 			  struct napi_struct *napi,
1009 			  struct iwl_rx_cmd_buffer *rxb)
1010 {
1011 	struct iwl_rx_packet *pkt = rxb_addr(rxb);
1012 	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1013 	u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd);
1014 
1015 	if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD)))
1016 		iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, 0);
1017 	else if (unlikely(cmd == WIDE_ID(DATA_PATH_GROUP,
1018 					 RX_QUEUES_NOTIFICATION)))
1019 		iwl_mvm_rx_queue_notif(mvm, rxb, 0);
1020 	else if (cmd == WIDE_ID(LEGACY_GROUP, FRAME_RELEASE))
1021 		iwl_mvm_rx_frame_release(mvm, napi, rxb, 0);
1022 	else
1023 		iwl_mvm_rx_common(mvm, rxb, pkt);
1024 }
1025 
1026 void iwl_mvm_stop_mac_queues(struct iwl_mvm *mvm, unsigned long mq)
1027 {
1028 	int q;
1029 
1030 	if (WARN_ON_ONCE(!mq))
1031 		return;
1032 
1033 	for_each_set_bit(q, &mq, IEEE80211_MAX_QUEUES) {
1034 		if (atomic_inc_return(&mvm->mac80211_queue_stop_count[q]) > 1) {
1035 			IWL_DEBUG_TX_QUEUES(mvm,
1036 					    "mac80211 %d already stopped\n", q);
1037 			continue;
1038 		}
1039 
1040 		ieee80211_stop_queue(mvm->hw, q);
1041 	}
1042 }
1043 
1044 static void iwl_mvm_async_cb(struct iwl_op_mode *op_mode,
1045 			     const struct iwl_device_cmd *cmd)
1046 {
1047 	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1048 
1049 	/*
1050 	 * For now, we only set the CMD_WANT_ASYNC_CALLBACK for ADD_STA
1051 	 * commands that need to block the Tx queues.
1052 	 */
1053 	iwl_trans_block_txq_ptrs(mvm->trans, false);
1054 }
1055 
1056 static void iwl_mvm_stop_sw_queue(struct iwl_op_mode *op_mode, int hw_queue)
1057 {
1058 	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1059 	unsigned long mq;
1060 
1061 	spin_lock_bh(&mvm->queue_info_lock);
1062 	mq = mvm->hw_queue_to_mac80211[hw_queue];
1063 	spin_unlock_bh(&mvm->queue_info_lock);
1064 
1065 	iwl_mvm_stop_mac_queues(mvm, mq);
1066 }
1067 
1068 void iwl_mvm_start_mac_queues(struct iwl_mvm *mvm, unsigned long mq)
1069 {
1070 	int q;
1071 
1072 	if (WARN_ON_ONCE(!mq))
1073 		return;
1074 
1075 	for_each_set_bit(q, &mq, IEEE80211_MAX_QUEUES) {
1076 		if (atomic_dec_return(&mvm->mac80211_queue_stop_count[q]) > 0) {
1077 			IWL_DEBUG_TX_QUEUES(mvm,
1078 					    "mac80211 %d still stopped\n", q);
1079 			continue;
1080 		}
1081 
1082 		ieee80211_wake_queue(mvm->hw, q);
1083 	}
1084 }
1085 
1086 static void iwl_mvm_wake_sw_queue(struct iwl_op_mode *op_mode, int hw_queue)
1087 {
1088 	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1089 	unsigned long mq;
1090 
1091 	spin_lock_bh(&mvm->queue_info_lock);
1092 	mq = mvm->hw_queue_to_mac80211[hw_queue];
1093 	spin_unlock_bh(&mvm->queue_info_lock);
1094 
1095 	iwl_mvm_start_mac_queues(mvm, mq);
1096 }
1097 
1098 static void iwl_mvm_set_rfkill_state(struct iwl_mvm *mvm)
1099 {
1100 	bool state = iwl_mvm_is_radio_killed(mvm);
1101 
1102 	if (state)
1103 		wake_up(&mvm->rx_sync_waitq);
1104 
1105 	wiphy_rfkill_set_hw_state(mvm->hw->wiphy, state);
1106 }
1107 
1108 void iwl_mvm_set_hw_ctkill_state(struct iwl_mvm *mvm, bool state)
1109 {
1110 	if (state)
1111 		set_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
1112 	else
1113 		clear_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
1114 
1115 	iwl_mvm_set_rfkill_state(mvm);
1116 }
1117 
1118 static bool iwl_mvm_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state)
1119 {
1120 	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1121 	bool calibrating = READ_ONCE(mvm->calibrating);
1122 
1123 	if (state)
1124 		set_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
1125 	else
1126 		clear_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
1127 
1128 	iwl_mvm_set_rfkill_state(mvm);
1129 
1130 	/* iwl_run_init_mvm_ucode is waiting for results, abort it */
1131 	if (calibrating)
1132 		iwl_abort_notification_waits(&mvm->notif_wait);
1133 
1134 	/*
1135 	 * Stop the device if we run OPERATIONAL firmware or if we are in the
1136 	 * middle of the calibrations.
1137 	 */
1138 	return state && (mvm->fwrt.cur_fw_img != IWL_UCODE_INIT || calibrating);
1139 }
1140 
1141 static void iwl_mvm_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb)
1142 {
1143 	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1144 	struct ieee80211_tx_info *info;
1145 
1146 	info = IEEE80211_SKB_CB(skb);
1147 	iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]);
1148 	ieee80211_free_txskb(mvm->hw, skb);
1149 }
1150 
1151 struct iwl_mvm_reprobe {
1152 	struct device *dev;
1153 	struct work_struct work;
1154 };
1155 
1156 static void iwl_mvm_reprobe_wk(struct work_struct *wk)
1157 {
1158 	struct iwl_mvm_reprobe *reprobe;
1159 
1160 	reprobe = container_of(wk, struct iwl_mvm_reprobe, work);
1161 	if (device_reprobe(reprobe->dev))
1162 		dev_err(reprobe->dev, "reprobe failed!\n");
1163 	kfree(reprobe);
1164 	module_put(THIS_MODULE);
1165 }
1166 
1167 void iwl_mvm_nic_restart(struct iwl_mvm *mvm, bool fw_error)
1168 {
1169 	iwl_abort_notification_waits(&mvm->notif_wait);
1170 
1171 	/*
1172 	 * This is a bit racy, but worst case we tell mac80211 about
1173 	 * a stopped/aborted scan when that was already done which
1174 	 * is not a problem. It is necessary to abort any os scan
1175 	 * here because mac80211 requires having the scan cleared
1176 	 * before restarting.
1177 	 * We'll reset the scan_status to NONE in restart cleanup in
1178 	 * the next start() call from mac80211. If restart isn't called
1179 	 * (no fw restart) scan status will stay busy.
1180 	 */
1181 	iwl_mvm_report_scan_aborted(mvm);
1182 
1183 	/*
1184 	 * If we're restarting already, don't cycle restarts.
1185 	 * If INIT fw asserted, it will likely fail again.
1186 	 * If WoWLAN fw asserted, don't restart either, mac80211
1187 	 * can't recover this since we're already half suspended.
1188 	 */
1189 	if (!mvm->fw_restart && fw_error) {
1190 		iwl_fw_dbg_collect_desc(&mvm->fwrt, &iwl_dump_desc_assert,
1191 					NULL);
1192 	} else if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1193 		struct iwl_mvm_reprobe *reprobe;
1194 
1195 		IWL_ERR(mvm,
1196 			"Firmware error during reconfiguration - reprobe!\n");
1197 
1198 		/*
1199 		 * get a module reference to avoid doing this while unloading
1200 		 * anyway and to avoid scheduling a work with code that's
1201 		 * being removed.
1202 		 */
1203 		if (!try_module_get(THIS_MODULE)) {
1204 			IWL_ERR(mvm, "Module is being unloaded - abort\n");
1205 			return;
1206 		}
1207 
1208 		reprobe = kzalloc(sizeof(*reprobe), GFP_ATOMIC);
1209 		if (!reprobe) {
1210 			module_put(THIS_MODULE);
1211 			return;
1212 		}
1213 		reprobe->dev = mvm->trans->dev;
1214 		INIT_WORK(&reprobe->work, iwl_mvm_reprobe_wk);
1215 		schedule_work(&reprobe->work);
1216 	} else if (mvm->fwrt.cur_fw_img == IWL_UCODE_REGULAR &&
1217 		   mvm->hw_registered) {
1218 		/* don't let the transport/FW power down */
1219 		iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1220 
1221 		if (fw_error && mvm->fw_restart > 0)
1222 			mvm->fw_restart--;
1223 		set_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status);
1224 		ieee80211_restart_hw(mvm->hw);
1225 	}
1226 }
1227 
1228 static void iwl_mvm_nic_error(struct iwl_op_mode *op_mode)
1229 {
1230 	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1231 
1232 	iwl_mvm_dump_nic_error_log(mvm);
1233 
1234 	iwl_mvm_nic_restart(mvm, true);
1235 }
1236 
1237 static void iwl_mvm_cmd_queue_full(struct iwl_op_mode *op_mode)
1238 {
1239 	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1240 
1241 	WARN_ON(1);
1242 	iwl_mvm_nic_restart(mvm, true);
1243 }
1244 
1245 struct iwl_d0i3_iter_data {
1246 	struct iwl_mvm *mvm;
1247 	struct ieee80211_vif *connected_vif;
1248 	u8 ap_sta_id;
1249 	u8 vif_count;
1250 	u8 offloading_tid;
1251 	bool disable_offloading;
1252 };
1253 
1254 static bool iwl_mvm_disallow_offloading(struct iwl_mvm *mvm,
1255 					struct ieee80211_vif *vif,
1256 					struct iwl_d0i3_iter_data *iter_data)
1257 {
1258 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1259 	struct iwl_mvm_sta *mvmsta;
1260 	u32 available_tids = 0;
1261 	u8 tid;
1262 
1263 	if (WARN_ON(vif->type != NL80211_IFTYPE_STATION ||
1264 		    mvmvif->ap_sta_id == IWL_MVM_INVALID_STA))
1265 		return false;
1266 
1267 	mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id);
1268 	if (!mvmsta)
1269 		return false;
1270 
1271 	spin_lock_bh(&mvmsta->lock);
1272 	for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1273 		struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
1274 
1275 		/*
1276 		 * in case of pending tx packets, don't use this tid
1277 		 * for offloading in order to prevent reuse of the same
1278 		 * qos seq counters.
1279 		 */
1280 		if (iwl_mvm_tid_queued(mvm, tid_data))
1281 			continue;
1282 
1283 		if (tid_data->state != IWL_AGG_OFF)
1284 			continue;
1285 
1286 		available_tids |= BIT(tid);
1287 	}
1288 	spin_unlock_bh(&mvmsta->lock);
1289 
1290 	/*
1291 	 * disallow protocol offloading if we have no available tid
1292 	 * (with no pending frames and no active aggregation,
1293 	 * as we don't handle "holes" properly - the scheduler needs the
1294 	 * frame's seq number and TFD index to match)
1295 	 */
1296 	if (!available_tids)
1297 		return true;
1298 
1299 	/* for simplicity, just use the first available tid */
1300 	iter_data->offloading_tid = ffs(available_tids) - 1;
1301 	return false;
1302 }
1303 
1304 static void iwl_mvm_enter_d0i3_iterator(void *_data, u8 *mac,
1305 					struct ieee80211_vif *vif)
1306 {
1307 	struct iwl_d0i3_iter_data *data = _data;
1308 	struct iwl_mvm *mvm = data->mvm;
1309 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1310 	u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE;
1311 
1312 	IWL_DEBUG_RPM(mvm, "entering D0i3 - vif %pM\n", vif->addr);
1313 	if (vif->type != NL80211_IFTYPE_STATION ||
1314 	    !vif->bss_conf.assoc)
1315 		return;
1316 
1317 	/*
1318 	 * in case of pending tx packets or active aggregations,
1319 	 * avoid offloading features in order to prevent reuse of
1320 	 * the same qos seq counters.
1321 	 */
1322 	if (iwl_mvm_disallow_offloading(mvm, vif, data))
1323 		data->disable_offloading = true;
1324 
1325 	iwl_mvm_update_d0i3_power_mode(mvm, vif, true, flags);
1326 	iwl_mvm_send_proto_offload(mvm, vif, data->disable_offloading,
1327 				   false, flags);
1328 
1329 	/*
1330 	 * on init/association, mvm already configures POWER_TABLE_CMD
1331 	 * and REPLY_MCAST_FILTER_CMD, so currently don't
1332 	 * reconfigure them (we might want to use different
1333 	 * params later on, though).
1334 	 */
1335 	data->ap_sta_id = mvmvif->ap_sta_id;
1336 	data->vif_count++;
1337 
1338 	/*
1339 	 * no new commands can be sent at this stage, so it's safe
1340 	 * to save the vif pointer during d0i3 entrance.
1341 	 */
1342 	data->connected_vif = vif;
1343 }
1344 
1345 static void iwl_mvm_set_wowlan_data(struct iwl_mvm *mvm,
1346 				    struct iwl_wowlan_config_cmd *cmd,
1347 				    struct iwl_d0i3_iter_data *iter_data)
1348 {
1349 	struct ieee80211_sta *ap_sta;
1350 	struct iwl_mvm_sta *mvm_ap_sta;
1351 
1352 	if (iter_data->ap_sta_id == IWL_MVM_INVALID_STA)
1353 		return;
1354 
1355 	rcu_read_lock();
1356 
1357 	ap_sta = rcu_dereference(mvm->fw_id_to_mac_id[iter_data->ap_sta_id]);
1358 	if (IS_ERR_OR_NULL(ap_sta))
1359 		goto out;
1360 
1361 	mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta);
1362 	cmd->is_11n_connection = ap_sta->ht_cap.ht_supported;
1363 	cmd->offloading_tid = iter_data->offloading_tid;
1364 	cmd->flags = ENABLE_L3_FILTERING | ENABLE_NBNS_FILTERING |
1365 		ENABLE_DHCP_FILTERING | ENABLE_STORE_BEACON;
1366 	/*
1367 	 * The d0i3 uCode takes care of the nonqos counters,
1368 	 * so configure only the qos seq ones.
1369 	 */
1370 	iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, cmd);
1371 out:
1372 	rcu_read_unlock();
1373 }
1374 
1375 int iwl_mvm_enter_d0i3(struct iwl_op_mode *op_mode)
1376 {
1377 	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1378 	u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE;
1379 	int ret;
1380 	struct iwl_d0i3_iter_data d0i3_iter_data = {
1381 		.mvm = mvm,
1382 	};
1383 	struct iwl_wowlan_config_cmd wowlan_config_cmd = {
1384 		.wakeup_filter = cpu_to_le32(IWL_WOWLAN_WAKEUP_RX_FRAME |
1385 					     IWL_WOWLAN_WAKEUP_BEACON_MISS |
1386 					     IWL_WOWLAN_WAKEUP_LINK_CHANGE),
1387 	};
1388 	struct iwl_d3_manager_config d3_cfg_cmd = {
1389 		.min_sleep_time = cpu_to_le32(1000),
1390 		.wakeup_flags = cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR),
1391 	};
1392 
1393 	IWL_DEBUG_RPM(mvm, "MVM entering D0i3\n");
1394 
1395 	if (WARN_ON_ONCE(mvm->fwrt.cur_fw_img != IWL_UCODE_REGULAR))
1396 		return -EINVAL;
1397 
1398 	set_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1399 
1400 	/*
1401 	 * iwl_mvm_ref_sync takes a reference before checking the flag.
1402 	 * so by checking there is no held reference we prevent a state
1403 	 * in which iwl_mvm_ref_sync continues successfully while we
1404 	 * configure the firmware to enter d0i3
1405 	 */
1406 	if (iwl_mvm_ref_taken(mvm)) {
1407 		IWL_DEBUG_RPM(mvm->trans, "abort d0i3 due to taken ref\n");
1408 		clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1409 		wake_up(&mvm->d0i3_exit_waitq);
1410 		return 1;
1411 	}
1412 
1413 	ieee80211_iterate_active_interfaces_atomic(mvm->hw,
1414 						   IEEE80211_IFACE_ITER_NORMAL,
1415 						   iwl_mvm_enter_d0i3_iterator,
1416 						   &d0i3_iter_data);
1417 	if (d0i3_iter_data.vif_count == 1) {
1418 		mvm->d0i3_ap_sta_id = d0i3_iter_data.ap_sta_id;
1419 		mvm->d0i3_offloading = !d0i3_iter_data.disable_offloading;
1420 	} else {
1421 		WARN_ON_ONCE(d0i3_iter_data.vif_count > 1);
1422 		mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA;
1423 		mvm->d0i3_offloading = false;
1424 	}
1425 
1426 	/* make sure we have no running tx while configuring the seqno */
1427 	synchronize_net();
1428 
1429 	/* Flush the hw queues, in case something got queued during entry */
1430 	/* TODO new tx api */
1431 	if (iwl_mvm_has_new_tx_api(mvm)) {
1432 		WARN_ONCE(1, "d0i3: Need to implement flush TX queue\n");
1433 	} else {
1434 		ret = iwl_mvm_flush_tx_path(mvm, iwl_mvm_flushable_queues(mvm),
1435 					    flags);
1436 		if (ret)
1437 			return ret;
1438 	}
1439 
1440 	/* configure wowlan configuration only if needed */
1441 	if (mvm->d0i3_ap_sta_id != IWL_MVM_INVALID_STA) {
1442 		/* wake on beacons only if beacon storing isn't supported */
1443 		if (!fw_has_capa(&mvm->fw->ucode_capa,
1444 				 IWL_UCODE_TLV_CAPA_BEACON_STORING))
1445 			wowlan_config_cmd.wakeup_filter |=
1446 				cpu_to_le32(IWL_WOWLAN_WAKEUP_BCN_FILTERING);
1447 
1448 		iwl_mvm_wowlan_config_key_params(mvm,
1449 						 d0i3_iter_data.connected_vif,
1450 						 true, flags);
1451 
1452 		iwl_mvm_set_wowlan_data(mvm, &wowlan_config_cmd,
1453 					&d0i3_iter_data);
1454 
1455 		ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, flags,
1456 					   sizeof(wowlan_config_cmd),
1457 					   &wowlan_config_cmd);
1458 		if (ret)
1459 			return ret;
1460 	}
1461 
1462 	return iwl_mvm_send_cmd_pdu(mvm, D3_CONFIG_CMD,
1463 				    flags | CMD_MAKE_TRANS_IDLE,
1464 				    sizeof(d3_cfg_cmd), &d3_cfg_cmd);
1465 }
1466 
1467 static void iwl_mvm_exit_d0i3_iterator(void *_data, u8 *mac,
1468 				       struct ieee80211_vif *vif)
1469 {
1470 	struct iwl_mvm *mvm = _data;
1471 	u32 flags = CMD_ASYNC | CMD_HIGH_PRIO;
1472 
1473 	IWL_DEBUG_RPM(mvm, "exiting D0i3 - vif %pM\n", vif->addr);
1474 	if (vif->type != NL80211_IFTYPE_STATION ||
1475 	    !vif->bss_conf.assoc)
1476 		return;
1477 
1478 	iwl_mvm_update_d0i3_power_mode(mvm, vif, false, flags);
1479 }
1480 
1481 struct iwl_mvm_d0i3_exit_work_iter_data {
1482 	struct iwl_mvm *mvm;
1483 	struct iwl_wowlan_status *status;
1484 	u32 wakeup_reasons;
1485 };
1486 
1487 static void iwl_mvm_d0i3_exit_work_iter(void *_data, u8 *mac,
1488 					struct ieee80211_vif *vif)
1489 {
1490 	struct iwl_mvm_d0i3_exit_work_iter_data *data = _data;
1491 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1492 	u32 reasons = data->wakeup_reasons;
1493 
1494 	/* consider only the relevant station interface */
1495 	if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc ||
1496 	    data->mvm->d0i3_ap_sta_id != mvmvif->ap_sta_id)
1497 		return;
1498 
1499 	if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH)
1500 		iwl_mvm_connection_loss(data->mvm, vif, "D0i3");
1501 	else if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON)
1502 		ieee80211_beacon_loss(vif);
1503 	else
1504 		iwl_mvm_d0i3_update_keys(data->mvm, vif, data->status);
1505 }
1506 
1507 void iwl_mvm_d0i3_enable_tx(struct iwl_mvm *mvm, __le16 *qos_seq)
1508 {
1509 	struct ieee80211_sta *sta = NULL;
1510 	struct iwl_mvm_sta *mvm_ap_sta;
1511 	int i;
1512 	bool wake_queues = false;
1513 
1514 	lockdep_assert_held(&mvm->mutex);
1515 
1516 	spin_lock_bh(&mvm->d0i3_tx_lock);
1517 
1518 	if (mvm->d0i3_ap_sta_id == IWL_MVM_INVALID_STA)
1519 		goto out;
1520 
1521 	IWL_DEBUG_RPM(mvm, "re-enqueue packets\n");
1522 
1523 	/* get the sta in order to update seq numbers and re-enqueue skbs */
1524 	sta = rcu_dereference_protected(
1525 			mvm->fw_id_to_mac_id[mvm->d0i3_ap_sta_id],
1526 			lockdep_is_held(&mvm->mutex));
1527 
1528 	if (IS_ERR_OR_NULL(sta)) {
1529 		sta = NULL;
1530 		goto out;
1531 	}
1532 
1533 	if (mvm->d0i3_offloading && qos_seq) {
1534 		/* update qos seq numbers if offloading was enabled */
1535 		mvm_ap_sta = iwl_mvm_sta_from_mac80211(sta);
1536 		for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
1537 			u16 seq = le16_to_cpu(qos_seq[i]);
1538 			/* firmware stores last-used one, we store next one */
1539 			seq += 0x10;
1540 			mvm_ap_sta->tid_data[i].seq_number = seq;
1541 		}
1542 	}
1543 out:
1544 	/* re-enqueue (or drop) all packets */
1545 	while (!skb_queue_empty(&mvm->d0i3_tx)) {
1546 		struct sk_buff *skb = __skb_dequeue(&mvm->d0i3_tx);
1547 
1548 		if (!sta || iwl_mvm_tx_skb(mvm, skb, sta))
1549 			ieee80211_free_txskb(mvm->hw, skb);
1550 
1551 		/* if the skb_queue is not empty, we need to wake queues */
1552 		wake_queues = true;
1553 	}
1554 	clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1555 	wake_up(&mvm->d0i3_exit_waitq);
1556 	mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA;
1557 	if (wake_queues)
1558 		ieee80211_wake_queues(mvm->hw);
1559 
1560 	spin_unlock_bh(&mvm->d0i3_tx_lock);
1561 }
1562 
1563 static void iwl_mvm_d0i3_exit_work(struct work_struct *wk)
1564 {
1565 	struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, d0i3_exit_work);
1566 	struct iwl_host_cmd get_status_cmd = {
1567 		.id = WOWLAN_GET_STATUSES,
1568 		.flags = CMD_HIGH_PRIO | CMD_WANT_SKB,
1569 	};
1570 	struct iwl_mvm_d0i3_exit_work_iter_data iter_data = {
1571 		.mvm = mvm,
1572 	};
1573 
1574 	struct iwl_wowlan_status *status;
1575 	int ret;
1576 	u32 wakeup_reasons = 0;
1577 	__le16 *qos_seq = NULL;
1578 
1579 	mutex_lock(&mvm->mutex);
1580 	ret = iwl_mvm_send_cmd(mvm, &get_status_cmd);
1581 	if (ret)
1582 		goto out;
1583 
1584 	status = (void *)get_status_cmd.resp_pkt->data;
1585 	wakeup_reasons = le32_to_cpu(status->wakeup_reasons);
1586 	qos_seq = status->qos_seq_ctr;
1587 
1588 	IWL_DEBUG_RPM(mvm, "wakeup reasons: 0x%x\n", wakeup_reasons);
1589 
1590 	iter_data.wakeup_reasons = wakeup_reasons;
1591 	iter_data.status = status;
1592 	ieee80211_iterate_active_interfaces(mvm->hw,
1593 					    IEEE80211_IFACE_ITER_NORMAL,
1594 					    iwl_mvm_d0i3_exit_work_iter,
1595 					    &iter_data);
1596 out:
1597 	iwl_mvm_d0i3_enable_tx(mvm, qos_seq);
1598 
1599 	IWL_DEBUG_INFO(mvm, "d0i3 exit completed (wakeup reasons: 0x%x)\n",
1600 		       wakeup_reasons);
1601 
1602 	/* qos_seq might point inside resp_pkt, so free it only now */
1603 	if (get_status_cmd.resp_pkt)
1604 		iwl_free_resp(&get_status_cmd);
1605 
1606 	/* the FW might have updated the regdomain */
1607 	iwl_mvm_update_changed_regdom(mvm);
1608 
1609 	iwl_mvm_unref(mvm, IWL_MVM_REF_EXIT_WORK);
1610 	mutex_unlock(&mvm->mutex);
1611 }
1612 
1613 int _iwl_mvm_exit_d0i3(struct iwl_mvm *mvm)
1614 {
1615 	u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE |
1616 		    CMD_WAKE_UP_TRANS;
1617 	int ret;
1618 
1619 	IWL_DEBUG_RPM(mvm, "MVM exiting D0i3\n");
1620 
1621 	if (WARN_ON_ONCE(mvm->fwrt.cur_fw_img != IWL_UCODE_REGULAR))
1622 		return -EINVAL;
1623 
1624 	mutex_lock(&mvm->d0i3_suspend_mutex);
1625 	if (test_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags)) {
1626 		IWL_DEBUG_RPM(mvm, "Deferring d0i3 exit until resume\n");
1627 		__set_bit(D0I3_PENDING_WAKEUP, &mvm->d0i3_suspend_flags);
1628 		mutex_unlock(&mvm->d0i3_suspend_mutex);
1629 		return 0;
1630 	}
1631 	mutex_unlock(&mvm->d0i3_suspend_mutex);
1632 
1633 	ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, flags, 0, NULL);
1634 	if (ret)
1635 		goto out;
1636 
1637 	ieee80211_iterate_active_interfaces_atomic(mvm->hw,
1638 						   IEEE80211_IFACE_ITER_NORMAL,
1639 						   iwl_mvm_exit_d0i3_iterator,
1640 						   mvm);
1641 out:
1642 	schedule_work(&mvm->d0i3_exit_work);
1643 	return ret;
1644 }
1645 
1646 int iwl_mvm_exit_d0i3(struct iwl_op_mode *op_mode)
1647 {
1648 	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1649 
1650 	iwl_mvm_ref(mvm, IWL_MVM_REF_EXIT_WORK);
1651 	return _iwl_mvm_exit_d0i3(mvm);
1652 }
1653 
1654 #define IWL_MVM_COMMON_OPS					\
1655 	/* these could be differentiated */			\
1656 	.async_cb = iwl_mvm_async_cb,				\
1657 	.queue_full = iwl_mvm_stop_sw_queue,			\
1658 	.queue_not_full = iwl_mvm_wake_sw_queue,		\
1659 	.hw_rf_kill = iwl_mvm_set_hw_rfkill_state,		\
1660 	.free_skb = iwl_mvm_free_skb,				\
1661 	.nic_error = iwl_mvm_nic_error,				\
1662 	.cmd_queue_full = iwl_mvm_cmd_queue_full,		\
1663 	.nic_config = iwl_mvm_nic_config,			\
1664 	.enter_d0i3 = iwl_mvm_enter_d0i3,			\
1665 	.exit_d0i3 = iwl_mvm_exit_d0i3,				\
1666 	/* as we only register one, these MUST be common! */	\
1667 	.start = iwl_op_mode_mvm_start,				\
1668 	.stop = iwl_op_mode_mvm_stop
1669 
1670 static const struct iwl_op_mode_ops iwl_mvm_ops = {
1671 	IWL_MVM_COMMON_OPS,
1672 	.rx = iwl_mvm_rx,
1673 };
1674 
1675 static void iwl_mvm_rx_mq_rss(struct iwl_op_mode *op_mode,
1676 			      struct napi_struct *napi,
1677 			      struct iwl_rx_cmd_buffer *rxb,
1678 			      unsigned int queue)
1679 {
1680 	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1681 	struct iwl_rx_packet *pkt = rxb_addr(rxb);
1682 	u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd);
1683 
1684 	if (unlikely(cmd == WIDE_ID(LEGACY_GROUP, FRAME_RELEASE)))
1685 		iwl_mvm_rx_frame_release(mvm, napi, rxb, queue);
1686 	else if (unlikely(cmd == WIDE_ID(DATA_PATH_GROUP,
1687 					 RX_QUEUES_NOTIFICATION)))
1688 		iwl_mvm_rx_queue_notif(mvm, rxb, queue);
1689 	else if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD)))
1690 		iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, queue);
1691 }
1692 
1693 static const struct iwl_op_mode_ops iwl_mvm_ops_mq = {
1694 	IWL_MVM_COMMON_OPS,
1695 	.rx = iwl_mvm_rx_mq,
1696 	.rx_rss = iwl_mvm_rx_mq_rss,
1697 };
1698