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->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_GRP(MAC_CONF_GROUP, SESSION_PROTECTION_NOTIF,
267 		       iwl_mvm_rx_session_protect_notif, RX_HANDLER_SYNC),
268 	RX_HANDLER(MCC_CHUB_UPDATE_CMD, iwl_mvm_rx_chub_update_mcc,
269 		   RX_HANDLER_ASYNC_LOCKED),
270 
271 	RX_HANDLER(EOSP_NOTIFICATION, iwl_mvm_rx_eosp_notif, RX_HANDLER_SYNC),
272 
273 	RX_HANDLER(SCAN_ITERATION_COMPLETE,
274 		   iwl_mvm_rx_lmac_scan_iter_complete_notif, RX_HANDLER_SYNC),
275 	RX_HANDLER(SCAN_OFFLOAD_COMPLETE,
276 		   iwl_mvm_rx_lmac_scan_complete_notif,
277 		   RX_HANDLER_ASYNC_LOCKED),
278 	RX_HANDLER(MATCH_FOUND_NOTIFICATION, iwl_mvm_rx_scan_match_found,
279 		   RX_HANDLER_SYNC),
280 	RX_HANDLER(SCAN_COMPLETE_UMAC, iwl_mvm_rx_umac_scan_complete_notif,
281 		   RX_HANDLER_ASYNC_LOCKED),
282 	RX_HANDLER(SCAN_ITERATION_COMPLETE_UMAC,
283 		   iwl_mvm_rx_umac_scan_iter_complete_notif, RX_HANDLER_SYNC),
284 
285 	RX_HANDLER(CARD_STATE_NOTIFICATION, iwl_mvm_rx_card_state_notif,
286 		   RX_HANDLER_SYNC),
287 
288 	RX_HANDLER(MISSED_BEACONS_NOTIFICATION, iwl_mvm_rx_missed_beacons_notif,
289 		   RX_HANDLER_SYNC),
290 
291 	RX_HANDLER(REPLY_ERROR, iwl_mvm_rx_fw_error, RX_HANDLER_SYNC),
292 	RX_HANDLER(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION,
293 		   iwl_mvm_power_uapsd_misbehaving_ap_notif, RX_HANDLER_SYNC),
294 	RX_HANDLER(DTS_MEASUREMENT_NOTIFICATION, iwl_mvm_temp_notif,
295 		   RX_HANDLER_ASYNC_LOCKED),
296 	RX_HANDLER_GRP(PHY_OPS_GROUP, DTS_MEASUREMENT_NOTIF_WIDE,
297 		       iwl_mvm_temp_notif, RX_HANDLER_ASYNC_UNLOCKED),
298 	RX_HANDLER_GRP(PHY_OPS_GROUP, CT_KILL_NOTIFICATION,
299 		       iwl_mvm_ct_kill_notif, RX_HANDLER_SYNC),
300 
301 	RX_HANDLER(TDLS_CHANNEL_SWITCH_NOTIFICATION, iwl_mvm_rx_tdls_notif,
302 		   RX_HANDLER_ASYNC_LOCKED),
303 	RX_HANDLER(MFUART_LOAD_NOTIFICATION, iwl_mvm_rx_mfuart_notif,
304 		   RX_HANDLER_SYNC),
305 	RX_HANDLER_GRP(LOCATION_GROUP, TOF_RESPONDER_STATS,
306 		       iwl_mvm_ftm_responder_stats, RX_HANDLER_ASYNC_LOCKED),
307 
308 	RX_HANDLER_GRP(LOCATION_GROUP, TOF_RANGE_RESPONSE_NOTIF,
309 		       iwl_mvm_ftm_range_resp, RX_HANDLER_ASYNC_LOCKED),
310 	RX_HANDLER_GRP(LOCATION_GROUP, TOF_LC_NOTIF,
311 		       iwl_mvm_ftm_lc_notif, RX_HANDLER_ASYNC_LOCKED),
312 
313 	RX_HANDLER_GRP(DEBUG_GROUP, MFU_ASSERT_DUMP_NTF,
314 		       iwl_mvm_mfu_assert_dump_notif, RX_HANDLER_SYNC),
315 	RX_HANDLER_GRP(PROT_OFFLOAD_GROUP, STORED_BEACON_NTF,
316 		       iwl_mvm_rx_stored_beacon_notif, RX_HANDLER_SYNC),
317 	RX_HANDLER_GRP(DATA_PATH_GROUP, MU_GROUP_MGMT_NOTIF,
318 		       iwl_mvm_mu_mimo_grp_notif, RX_HANDLER_SYNC),
319 	RX_HANDLER_GRP(DATA_PATH_GROUP, STA_PM_NOTIF,
320 		       iwl_mvm_sta_pm_notif, RX_HANDLER_SYNC),
321 };
322 #undef RX_HANDLER
323 #undef RX_HANDLER_GRP
324 
325 /* Please keep this array *SORTED* by hex value.
326  * Access is done through binary search
327  */
328 static const struct iwl_hcmd_names iwl_mvm_legacy_names[] = {
329 	HCMD_NAME(MVM_ALIVE),
330 	HCMD_NAME(REPLY_ERROR),
331 	HCMD_NAME(ECHO_CMD),
332 	HCMD_NAME(INIT_COMPLETE_NOTIF),
333 	HCMD_NAME(PHY_CONTEXT_CMD),
334 	HCMD_NAME(DBG_CFG),
335 	HCMD_NAME(SCAN_CFG_CMD),
336 	HCMD_NAME(SCAN_REQ_UMAC),
337 	HCMD_NAME(SCAN_ABORT_UMAC),
338 	HCMD_NAME(SCAN_COMPLETE_UMAC),
339 	HCMD_NAME(BA_WINDOW_STATUS_NOTIFICATION_ID),
340 	HCMD_NAME(ADD_STA_KEY),
341 	HCMD_NAME(ADD_STA),
342 	HCMD_NAME(REMOVE_STA),
343 	HCMD_NAME(FW_GET_ITEM_CMD),
344 	HCMD_NAME(TX_CMD),
345 	HCMD_NAME(SCD_QUEUE_CFG),
346 	HCMD_NAME(TXPATH_FLUSH),
347 	HCMD_NAME(MGMT_MCAST_KEY),
348 	HCMD_NAME(WEP_KEY),
349 	HCMD_NAME(SHARED_MEM_CFG),
350 	HCMD_NAME(TDLS_CHANNEL_SWITCH_CMD),
351 	HCMD_NAME(MAC_CONTEXT_CMD),
352 	HCMD_NAME(TIME_EVENT_CMD),
353 	HCMD_NAME(TIME_EVENT_NOTIFICATION),
354 	HCMD_NAME(BINDING_CONTEXT_CMD),
355 	HCMD_NAME(TIME_QUOTA_CMD),
356 	HCMD_NAME(NON_QOS_TX_COUNTER_CMD),
357 	HCMD_NAME(LEDS_CMD),
358 	HCMD_NAME(LQ_CMD),
359 	HCMD_NAME(FW_PAGING_BLOCK_CMD),
360 	HCMD_NAME(SCAN_OFFLOAD_REQUEST_CMD),
361 	HCMD_NAME(SCAN_OFFLOAD_ABORT_CMD),
362 	HCMD_NAME(HOT_SPOT_CMD),
363 	HCMD_NAME(SCAN_OFFLOAD_PROFILES_QUERY_CMD),
364 	HCMD_NAME(BT_COEX_UPDATE_REDUCED_TXP),
365 	HCMD_NAME(BT_COEX_CI),
366 	HCMD_NAME(PHY_CONFIGURATION_CMD),
367 	HCMD_NAME(CALIB_RES_NOTIF_PHY_DB),
368 	HCMD_NAME(PHY_DB_CMD),
369 	HCMD_NAME(SCAN_OFFLOAD_COMPLETE),
370 	HCMD_NAME(SCAN_OFFLOAD_UPDATE_PROFILES_CMD),
371 	HCMD_NAME(POWER_TABLE_CMD),
372 	HCMD_NAME(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION),
373 	HCMD_NAME(REPLY_THERMAL_MNG_BACKOFF),
374 	HCMD_NAME(DC2DC_CONFIG_CMD),
375 	HCMD_NAME(NVM_ACCESS_CMD),
376 	HCMD_NAME(BEACON_NOTIFICATION),
377 	HCMD_NAME(BEACON_TEMPLATE_CMD),
378 	HCMD_NAME(TX_ANT_CONFIGURATION_CMD),
379 	HCMD_NAME(BT_CONFIG),
380 	HCMD_NAME(STATISTICS_CMD),
381 	HCMD_NAME(STATISTICS_NOTIFICATION),
382 	HCMD_NAME(EOSP_NOTIFICATION),
383 	HCMD_NAME(REDUCE_TX_POWER_CMD),
384 	HCMD_NAME(CARD_STATE_NOTIFICATION),
385 	HCMD_NAME(MISSED_BEACONS_NOTIFICATION),
386 	HCMD_NAME(TDLS_CONFIG_CMD),
387 	HCMD_NAME(MAC_PM_POWER_TABLE),
388 	HCMD_NAME(TDLS_CHANNEL_SWITCH_NOTIFICATION),
389 	HCMD_NAME(MFUART_LOAD_NOTIFICATION),
390 	HCMD_NAME(RSS_CONFIG_CMD),
391 	HCMD_NAME(SCAN_ITERATION_COMPLETE_UMAC),
392 	HCMD_NAME(REPLY_RX_PHY_CMD),
393 	HCMD_NAME(REPLY_RX_MPDU_CMD),
394 	HCMD_NAME(BAR_FRAME_RELEASE),
395 	HCMD_NAME(FRAME_RELEASE),
396 	HCMD_NAME(BA_NOTIF),
397 	HCMD_NAME(MCC_UPDATE_CMD),
398 	HCMD_NAME(MCC_CHUB_UPDATE_CMD),
399 	HCMD_NAME(MARKER_CMD),
400 	HCMD_NAME(BT_PROFILE_NOTIFICATION),
401 	HCMD_NAME(BCAST_FILTER_CMD),
402 	HCMD_NAME(MCAST_FILTER_CMD),
403 	HCMD_NAME(REPLY_SF_CFG_CMD),
404 	HCMD_NAME(REPLY_BEACON_FILTERING_CMD),
405 	HCMD_NAME(D3_CONFIG_CMD),
406 	HCMD_NAME(PROT_OFFLOAD_CONFIG_CMD),
407 	HCMD_NAME(OFFLOADS_QUERY_CMD),
408 	HCMD_NAME(REMOTE_WAKE_CONFIG_CMD),
409 	HCMD_NAME(MATCH_FOUND_NOTIFICATION),
410 	HCMD_NAME(DTS_MEASUREMENT_NOTIFICATION),
411 	HCMD_NAME(WOWLAN_PATTERNS),
412 	HCMD_NAME(WOWLAN_CONFIGURATION),
413 	HCMD_NAME(WOWLAN_TSC_RSC_PARAM),
414 	HCMD_NAME(WOWLAN_TKIP_PARAM),
415 	HCMD_NAME(WOWLAN_KEK_KCK_MATERIAL),
416 	HCMD_NAME(WOWLAN_GET_STATUSES),
417 	HCMD_NAME(SCAN_ITERATION_COMPLETE),
418 	HCMD_NAME(D0I3_END_CMD),
419 	HCMD_NAME(LTR_CONFIG),
420 	HCMD_NAME(LDBG_CONFIG_CMD),
421 };
422 
423 /* Please keep this array *SORTED* by hex value.
424  * Access is done through binary search
425  */
426 static const struct iwl_hcmd_names iwl_mvm_system_names[] = {
427 	HCMD_NAME(SHARED_MEM_CFG_CMD),
428 	HCMD_NAME(INIT_EXTENDED_CFG_CMD),
429 	HCMD_NAME(FW_ERROR_RECOVERY_CMD),
430 };
431 
432 /* Please keep this array *SORTED* by hex value.
433  * Access is done through binary search
434  */
435 static const struct iwl_hcmd_names iwl_mvm_mac_conf_names[] = {
436 	HCMD_NAME(CHANNEL_SWITCH_TIME_EVENT_CMD),
437 	HCMD_NAME(SESSION_PROTECTION_CMD),
438 	HCMD_NAME(SESSION_PROTECTION_NOTIF),
439 	HCMD_NAME(CHANNEL_SWITCH_NOA_NOTIF),
440 };
441 
442 /* Please keep this array *SORTED* by hex value.
443  * Access is done through binary search
444  */
445 static const struct iwl_hcmd_names iwl_mvm_phy_names[] = {
446 	HCMD_NAME(CMD_DTS_MEASUREMENT_TRIGGER_WIDE),
447 	HCMD_NAME(CTDP_CONFIG_CMD),
448 	HCMD_NAME(TEMP_REPORTING_THRESHOLDS_CMD),
449 	HCMD_NAME(GEO_TX_POWER_LIMIT),
450 	HCMD_NAME(CT_KILL_NOTIFICATION),
451 	HCMD_NAME(DTS_MEASUREMENT_NOTIF_WIDE),
452 };
453 
454 /* Please keep this array *SORTED* by hex value.
455  * Access is done through binary search
456  */
457 static const struct iwl_hcmd_names iwl_mvm_data_path_names[] = {
458 	HCMD_NAME(DQA_ENABLE_CMD),
459 	HCMD_NAME(UPDATE_MU_GROUPS_CMD),
460 	HCMD_NAME(TRIGGER_RX_QUEUES_NOTIF_CMD),
461 	HCMD_NAME(STA_HE_CTXT_CMD),
462 	HCMD_NAME(RFH_QUEUE_CONFIG_CMD),
463 	HCMD_NAME(TLC_MNG_CONFIG_CMD),
464 	HCMD_NAME(CHEST_COLLECTOR_FILTER_CONFIG_CMD),
465 	HCMD_NAME(STA_PM_NOTIF),
466 	HCMD_NAME(MU_GROUP_MGMT_NOTIF),
467 	HCMD_NAME(RX_QUEUES_NOTIFICATION),
468 };
469 
470 /* Please keep this array *SORTED* by hex value.
471  * Access is done through binary search
472  */
473 static const struct iwl_hcmd_names iwl_mvm_debug_names[] = {
474 	HCMD_NAME(DBGC_SUSPEND_RESUME),
475 	HCMD_NAME(BUFFER_ALLOCATION),
476 	HCMD_NAME(MFU_ASSERT_DUMP_NTF),
477 };
478 
479 /* Please keep this array *SORTED* by hex value.
480  * Access is done through binary search
481  */
482 static const struct iwl_hcmd_names iwl_mvm_location_names[] = {
483 	HCMD_NAME(TOF_RANGE_REQ_CMD),
484 	HCMD_NAME(TOF_CONFIG_CMD),
485 	HCMD_NAME(TOF_RANGE_ABORT_CMD),
486 	HCMD_NAME(TOF_RANGE_REQ_EXT_CMD),
487 	HCMD_NAME(TOF_RESPONDER_CONFIG_CMD),
488 	HCMD_NAME(TOF_RESPONDER_DYN_CONFIG_CMD),
489 	HCMD_NAME(TOF_LC_NOTIF),
490 	HCMD_NAME(TOF_RESPONDER_STATS),
491 	HCMD_NAME(TOF_MCSI_DEBUG_NOTIF),
492 	HCMD_NAME(TOF_RANGE_RESPONSE_NOTIF),
493 };
494 
495 /* Please keep this array *SORTED* by hex value.
496  * Access is done through binary search
497  */
498 static const struct iwl_hcmd_names iwl_mvm_prot_offload_names[] = {
499 	HCMD_NAME(STORED_BEACON_NTF),
500 };
501 
502 /* Please keep this array *SORTED* by hex value.
503  * Access is done through binary search
504  */
505 static const struct iwl_hcmd_names iwl_mvm_regulatory_and_nvm_names[] = {
506 	HCMD_NAME(NVM_ACCESS_COMPLETE),
507 	HCMD_NAME(NVM_GET_INFO),
508 };
509 
510 static const struct iwl_hcmd_arr iwl_mvm_groups[] = {
511 	[LEGACY_GROUP] = HCMD_ARR(iwl_mvm_legacy_names),
512 	[LONG_GROUP] = HCMD_ARR(iwl_mvm_legacy_names),
513 	[SYSTEM_GROUP] = HCMD_ARR(iwl_mvm_system_names),
514 	[MAC_CONF_GROUP] = HCMD_ARR(iwl_mvm_mac_conf_names),
515 	[PHY_OPS_GROUP] = HCMD_ARR(iwl_mvm_phy_names),
516 	[DATA_PATH_GROUP] = HCMD_ARR(iwl_mvm_data_path_names),
517 	[LOCATION_GROUP] = HCMD_ARR(iwl_mvm_location_names),
518 	[PROT_OFFLOAD_GROUP] = HCMD_ARR(iwl_mvm_prot_offload_names),
519 	[REGULATORY_AND_NVM_GROUP] =
520 		HCMD_ARR(iwl_mvm_regulatory_and_nvm_names),
521 };
522 
523 /* this forward declaration can avoid to export the function */
524 static void iwl_mvm_async_handlers_wk(struct work_struct *wk);
525 
526 static u32 iwl_mvm_min_backoff(struct iwl_mvm *mvm)
527 {
528 	const struct iwl_pwr_tx_backoff *backoff = mvm->cfg->pwr_tx_backoffs;
529 	u64 dflt_pwr_limit;
530 
531 	if (!backoff)
532 		return 0;
533 
534 	dflt_pwr_limit = iwl_acpi_get_pwr_limit(mvm->dev);
535 
536 	while (backoff->pwr) {
537 		if (dflt_pwr_limit >= backoff->pwr)
538 			return backoff->backoff;
539 
540 		backoff++;
541 	}
542 
543 	return 0;
544 }
545 
546 static void iwl_mvm_tx_unblock_dwork(struct work_struct *work)
547 {
548 	struct iwl_mvm *mvm =
549 		container_of(work, struct iwl_mvm, cs_tx_unblock_dwork.work);
550 	struct ieee80211_vif *tx_blocked_vif;
551 	struct iwl_mvm_vif *mvmvif;
552 
553 	mutex_lock(&mvm->mutex);
554 
555 	tx_blocked_vif =
556 		rcu_dereference_protected(mvm->csa_tx_blocked_vif,
557 					  lockdep_is_held(&mvm->mutex));
558 
559 	if (!tx_blocked_vif)
560 		goto unlock;
561 
562 	mvmvif = iwl_mvm_vif_from_mac80211(tx_blocked_vif);
563 	iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, false);
564 	RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
565 unlock:
566 	mutex_unlock(&mvm->mutex);
567 }
568 
569 static int iwl_mvm_fwrt_dump_start(void *ctx)
570 {
571 	struct iwl_mvm *mvm = ctx;
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 
585 static bool iwl_mvm_fwrt_fw_running(void *ctx)
586 {
587 	return iwl_mvm_firmware_running(ctx);
588 }
589 
590 static int iwl_mvm_fwrt_send_hcmd(void *ctx, struct iwl_host_cmd *host_cmd)
591 {
592 	struct iwl_mvm *mvm = (struct iwl_mvm *)ctx;
593 	int ret;
594 
595 	mutex_lock(&mvm->mutex);
596 	ret = iwl_mvm_send_cmd(mvm, host_cmd);
597 	mutex_unlock(&mvm->mutex);
598 
599 	return ret;
600 }
601 
602 static bool iwl_mvm_d3_debug_enable(void *ctx)
603 {
604 	return IWL_MVM_D3_DEBUG;
605 }
606 
607 static const struct iwl_fw_runtime_ops iwl_mvm_fwrt_ops = {
608 	.dump_start = iwl_mvm_fwrt_dump_start,
609 	.dump_end = iwl_mvm_fwrt_dump_end,
610 	.fw_running = iwl_mvm_fwrt_fw_running,
611 	.send_hcmd = iwl_mvm_fwrt_send_hcmd,
612 	.d3_debug_enable = iwl_mvm_d3_debug_enable,
613 };
614 
615 static u8 iwl_mvm_lookup_notif_ver(struct iwl_mvm *mvm, u8 grp, u8 cmd, u8 def)
616 {
617 	const struct iwl_fw_cmd_version *entry;
618 	unsigned int i;
619 
620 	if (!mvm->fw->ucode_capa.cmd_versions ||
621 	    !mvm->fw->ucode_capa.n_cmd_versions)
622 		return def;
623 
624 	entry = mvm->fw->ucode_capa.cmd_versions;
625 	for (i = 0; i < mvm->fw->ucode_capa.n_cmd_versions; i++, entry++) {
626 		if (entry->group == grp && entry->cmd == cmd) {
627 			if (entry->notif_ver == IWL_FW_CMD_VER_UNKNOWN)
628 				return def;
629 			return entry->notif_ver;
630 		}
631 	}
632 
633 	return def;
634 }
635 
636 static struct iwl_op_mode *
637 iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg,
638 		      const struct iwl_fw *fw, struct dentry *dbgfs_dir)
639 {
640 	struct ieee80211_hw *hw;
641 	struct iwl_op_mode *op_mode;
642 	struct iwl_mvm *mvm;
643 	struct iwl_trans_config trans_cfg = {};
644 	static const u8 no_reclaim_cmds[] = {
645 		TX_CMD,
646 	};
647 	int err, scan_size;
648 	u32 min_backoff;
649 	enum iwl_amsdu_size rb_size_default;
650 
651 	/*
652 	 * We use IWL_MVM_STATION_COUNT to check the validity of the station
653 	 * index all over the driver - check that its value corresponds to the
654 	 * array size.
655 	 */
656 	BUILD_BUG_ON(ARRAY_SIZE(mvm->fw_id_to_mac_id) != IWL_MVM_STATION_COUNT);
657 
658 	/********************************
659 	 * 1. Allocating and configuring HW data
660 	 ********************************/
661 	hw = ieee80211_alloc_hw(sizeof(struct iwl_op_mode) +
662 				sizeof(struct iwl_mvm),
663 				&iwl_mvm_hw_ops);
664 	if (!hw)
665 		return NULL;
666 
667 	hw->max_rx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF;
668 
669 	if (cfg->max_tx_agg_size)
670 		hw->max_tx_aggregation_subframes = cfg->max_tx_agg_size;
671 	else
672 		hw->max_tx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF;
673 
674 	op_mode = hw->priv;
675 
676 	mvm = IWL_OP_MODE_GET_MVM(op_mode);
677 	mvm->dev = trans->dev;
678 	mvm->trans = trans;
679 	mvm->cfg = cfg;
680 	mvm->fw = fw;
681 	mvm->hw = hw;
682 
683 	iwl_fw_runtime_init(&mvm->fwrt, trans, fw, &iwl_mvm_fwrt_ops, mvm,
684 			    dbgfs_dir);
685 
686 	mvm->init_status = 0;
687 
688 	if (iwl_mvm_has_new_rx_api(mvm)) {
689 		op_mode->ops = &iwl_mvm_ops_mq;
690 		trans->rx_mpdu_cmd_hdr_size =
691 			(trans->trans_cfg->device_family >=
692 			 IWL_DEVICE_FAMILY_AX210) ?
693 			sizeof(struct iwl_rx_mpdu_desc) :
694 			IWL_RX_DESC_SIZE_V1;
695 	} else {
696 		op_mode->ops = &iwl_mvm_ops;
697 		trans->rx_mpdu_cmd_hdr_size =
698 			sizeof(struct iwl_rx_mpdu_res_start);
699 
700 		if (WARN_ON(trans->num_rx_queues > 1))
701 			goto out_free;
702 	}
703 
704 	mvm->fw_restart = iwlwifi_mod_params.fw_restart ? -1 : 0;
705 
706 	mvm->aux_queue = IWL_MVM_DQA_AUX_QUEUE;
707 	mvm->snif_queue = IWL_MVM_DQA_INJECT_MONITOR_QUEUE;
708 	mvm->probe_queue = IWL_MVM_DQA_AP_PROBE_RESP_QUEUE;
709 	mvm->p2p_dev_queue = IWL_MVM_DQA_P2P_DEVICE_QUEUE;
710 
711 	mvm->sf_state = SF_UNINIT;
712 	if (iwl_mvm_has_unified_ucode(mvm))
713 		iwl_fw_set_current_image(&mvm->fwrt, IWL_UCODE_REGULAR);
714 	else
715 		iwl_fw_set_current_image(&mvm->fwrt, IWL_UCODE_INIT);
716 	mvm->drop_bcn_ap_mode = true;
717 
718 	mutex_init(&mvm->mutex);
719 	spin_lock_init(&mvm->async_handlers_lock);
720 	INIT_LIST_HEAD(&mvm->time_event_list);
721 	INIT_LIST_HEAD(&mvm->aux_roc_te_list);
722 	INIT_LIST_HEAD(&mvm->async_handlers_list);
723 	spin_lock_init(&mvm->time_event_lock);
724 	INIT_LIST_HEAD(&mvm->ftm_initiator.loc_list);
725 
726 	INIT_WORK(&mvm->async_handlers_wk, iwl_mvm_async_handlers_wk);
727 	INIT_WORK(&mvm->roc_done_wk, iwl_mvm_roc_done_wk);
728 	INIT_DELAYED_WORK(&mvm->tdls_cs.dwork, iwl_mvm_tdls_ch_switch_work);
729 	INIT_DELAYED_WORK(&mvm->scan_timeout_dwork, iwl_mvm_scan_timeout_wk);
730 	INIT_WORK(&mvm->add_stream_wk, iwl_mvm_add_new_dqa_stream_wk);
731 	INIT_LIST_HEAD(&mvm->add_stream_txqs);
732 
733 	init_waitqueue_head(&mvm->rx_sync_waitq);
734 
735 	atomic_set(&mvm->queue_sync_counter, 0);
736 
737 	SET_IEEE80211_DEV(mvm->hw, mvm->trans->dev);
738 
739 	spin_lock_init(&mvm->tcm.lock);
740 	INIT_DELAYED_WORK(&mvm->tcm.work, iwl_mvm_tcm_work);
741 	mvm->tcm.ts = jiffies;
742 	mvm->tcm.ll_ts = jiffies;
743 	mvm->tcm.uapsd_nonagg_ts = jiffies;
744 
745 	INIT_DELAYED_WORK(&mvm->cs_tx_unblock_dwork, iwl_mvm_tx_unblock_dwork);
746 
747 	mvm->cmd_ver.d0i3_resp =
748 		iwl_mvm_lookup_notif_ver(mvm, LEGACY_GROUP, D0I3_END_CMD, 0);
749 	/* we only support version 1 */
750 	if (WARN_ON_ONCE(mvm->cmd_ver.d0i3_resp > 1))
751 		goto out_free;
752 
753 	/*
754 	 * Populate the state variables that the transport layer needs
755 	 * to know about.
756 	 */
757 	trans_cfg.op_mode = op_mode;
758 	trans_cfg.no_reclaim_cmds = no_reclaim_cmds;
759 	trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds);
760 
761 	if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_AX210)
762 		rb_size_default = IWL_AMSDU_2K;
763 	else
764 		rb_size_default = IWL_AMSDU_4K;
765 
766 	switch (iwlwifi_mod_params.amsdu_size) {
767 	case IWL_AMSDU_DEF:
768 		trans_cfg.rx_buf_size = rb_size_default;
769 		break;
770 	case IWL_AMSDU_4K:
771 		trans_cfg.rx_buf_size = IWL_AMSDU_4K;
772 		break;
773 	case IWL_AMSDU_8K:
774 		trans_cfg.rx_buf_size = IWL_AMSDU_8K;
775 		break;
776 	case IWL_AMSDU_12K:
777 		trans_cfg.rx_buf_size = IWL_AMSDU_12K;
778 		break;
779 	default:
780 		pr_err("%s: Unsupported amsdu_size: %d\n", KBUILD_MODNAME,
781 		       iwlwifi_mod_params.amsdu_size);
782 		trans_cfg.rx_buf_size = rb_size_default;
783 	}
784 
785 	trans->wide_cmd_header = true;
786 	trans_cfg.bc_table_dword =
787 		mvm->trans->trans_cfg->device_family < IWL_DEVICE_FAMILY_AX210;
788 
789 	trans_cfg.command_groups = iwl_mvm_groups;
790 	trans_cfg.command_groups_size = ARRAY_SIZE(iwl_mvm_groups);
791 
792 	trans_cfg.cmd_queue = IWL_MVM_DQA_CMD_QUEUE;
793 	trans_cfg.cmd_fifo = IWL_MVM_TX_FIFO_CMD;
794 	trans_cfg.scd_set_active = true;
795 
796 	trans_cfg.cb_data_offs = offsetof(struct ieee80211_tx_info,
797 					  driver_data[2]);
798 
799 	trans_cfg.sw_csum_tx = IWL_MVM_SW_TX_CSUM_OFFLOAD;
800 
801 	/* Set a short watchdog for the command queue */
802 	trans_cfg.cmd_q_wdg_timeout =
803 		iwl_mvm_get_wd_timeout(mvm, NULL, false, true);
804 
805 	snprintf(mvm->hw->wiphy->fw_version,
806 		 sizeof(mvm->hw->wiphy->fw_version),
807 		 "%s", fw->fw_version);
808 
809 	/* Configure transport layer */
810 	iwl_trans_configure(mvm->trans, &trans_cfg);
811 
812 	trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD;
813 	trans->dbg.dest_tlv = mvm->fw->dbg.dest_tlv;
814 	trans->dbg.n_dest_reg = mvm->fw->dbg.n_dest_reg;
815 	memcpy(trans->dbg.conf_tlv, mvm->fw->dbg.conf_tlv,
816 	       sizeof(trans->dbg.conf_tlv));
817 	trans->dbg.trigger_tlv = mvm->fw->dbg.trigger_tlv;
818 
819 	trans->iml = mvm->fw->iml;
820 	trans->iml_len = mvm->fw->iml_len;
821 
822 	/* set up notification wait support */
823 	iwl_notification_wait_init(&mvm->notif_wait);
824 
825 	/* Init phy db */
826 	mvm->phy_db = iwl_phy_db_init(trans);
827 	if (!mvm->phy_db) {
828 		IWL_ERR(mvm, "Cannot init phy_db\n");
829 		goto out_free;
830 	}
831 
832 	IWL_INFO(mvm, "Detected %s, REV=0x%X\n",
833 		 mvm->cfg->name, mvm->trans->hw_rev);
834 
835 	if (iwlwifi_mod_params.nvm_file)
836 		mvm->nvm_file_name = iwlwifi_mod_params.nvm_file;
837 	else
838 		IWL_DEBUG_EEPROM(mvm->trans->dev,
839 				 "working without external nvm file\n");
840 
841 	err = iwl_trans_start_hw(mvm->trans);
842 	if (err)
843 		goto out_free;
844 
845 	mutex_lock(&mvm->mutex);
846 	err = iwl_run_init_mvm_ucode(mvm, true);
847 	if (err && err != -ERFKILL)
848 		iwl_fw_dbg_error_collect(&mvm->fwrt, FW_DBG_TRIGGER_DRIVER);
849 	if (!iwlmvm_mod_params.init_dbg || !err)
850 		iwl_mvm_stop_device(mvm);
851 	mutex_unlock(&mvm->mutex);
852 	if (err < 0) {
853 		IWL_ERR(mvm, "Failed to run INIT ucode: %d\n", err);
854 		goto out_free;
855 	}
856 
857 	scan_size = iwl_mvm_scan_size(mvm);
858 
859 	mvm->scan_cmd = kmalloc(scan_size, GFP_KERNEL);
860 	if (!mvm->scan_cmd)
861 		goto out_free;
862 
863 	/* Set EBS as successful as long as not stated otherwise by the FW. */
864 	mvm->last_ebs_successful = true;
865 
866 	err = iwl_mvm_mac_setup_register(mvm);
867 	if (err)
868 		goto out_free;
869 	mvm->hw_registered = true;
870 
871 	min_backoff = iwl_mvm_min_backoff(mvm);
872 	iwl_mvm_thermal_initialize(mvm, min_backoff);
873 
874 	iwl_mvm_dbgfs_register(mvm, dbgfs_dir);
875 
876 	if (!iwl_mvm_has_new_rx_stats_api(mvm))
877 		memset(&mvm->rx_stats_v3, 0,
878 		       sizeof(struct mvm_statistics_rx_v3));
879 	else
880 		memset(&mvm->rx_stats, 0, sizeof(struct mvm_statistics_rx));
881 
882 	iwl_mvm_toggle_tx_ant(mvm, &mvm->mgmt_last_antenna_idx);
883 
884 	return op_mode;
885 
886  out_free:
887 	iwl_fw_flush_dumps(&mvm->fwrt);
888 	iwl_fw_runtime_free(&mvm->fwrt);
889 
890 	if (iwlmvm_mod_params.init_dbg)
891 		return op_mode;
892 	iwl_phy_db_free(mvm->phy_db);
893 	kfree(mvm->scan_cmd);
894 	iwl_trans_op_mode_leave(trans);
895 
896 	ieee80211_free_hw(mvm->hw);
897 	return NULL;
898 }
899 
900 static void iwl_op_mode_mvm_stop(struct iwl_op_mode *op_mode)
901 {
902 	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
903 	int i;
904 
905 	iwl_mvm_leds_exit(mvm);
906 
907 	iwl_mvm_thermal_exit(mvm);
908 
909 	ieee80211_unregister_hw(mvm->hw);
910 
911 	kfree(mvm->scan_cmd);
912 	kfree(mvm->mcast_filter_cmd);
913 	mvm->mcast_filter_cmd = NULL;
914 
915 	kfree(mvm->error_recovery_buf);
916 	mvm->error_recovery_buf = NULL;
917 
918 	iwl_trans_op_mode_leave(mvm->trans);
919 
920 	iwl_phy_db_free(mvm->phy_db);
921 	mvm->phy_db = NULL;
922 
923 	kfree(mvm->nvm_data);
924 	for (i = 0; i < NVM_MAX_NUM_SECTIONS; i++)
925 		kfree(mvm->nvm_sections[i].data);
926 
927 	cancel_delayed_work_sync(&mvm->tcm.work);
928 
929 	iwl_fw_runtime_free(&mvm->fwrt);
930 	mutex_destroy(&mvm->mutex);
931 
932 	ieee80211_free_hw(mvm->hw);
933 }
934 
935 struct iwl_async_handler_entry {
936 	struct list_head list;
937 	struct iwl_rx_cmd_buffer rxb;
938 	enum iwl_rx_handler_context context;
939 	void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb);
940 };
941 
942 void iwl_mvm_async_handlers_purge(struct iwl_mvm *mvm)
943 {
944 	struct iwl_async_handler_entry *entry, *tmp;
945 
946 	spin_lock_bh(&mvm->async_handlers_lock);
947 	list_for_each_entry_safe(entry, tmp, &mvm->async_handlers_list, list) {
948 		iwl_free_rxb(&entry->rxb);
949 		list_del(&entry->list);
950 		kfree(entry);
951 	}
952 	spin_unlock_bh(&mvm->async_handlers_lock);
953 }
954 
955 static void iwl_mvm_async_handlers_wk(struct work_struct *wk)
956 {
957 	struct iwl_mvm *mvm =
958 		container_of(wk, struct iwl_mvm, async_handlers_wk);
959 	struct iwl_async_handler_entry *entry, *tmp;
960 	LIST_HEAD(local_list);
961 
962 	/* Ensure that we are not in stop flow (check iwl_mvm_mac_stop) */
963 
964 	/*
965 	 * Sync with Rx path with a lock. Remove all the entries from this list,
966 	 * add them to a local one (lock free), and then handle them.
967 	 */
968 	spin_lock_bh(&mvm->async_handlers_lock);
969 	list_splice_init(&mvm->async_handlers_list, &local_list);
970 	spin_unlock_bh(&mvm->async_handlers_lock);
971 
972 	list_for_each_entry_safe(entry, tmp, &local_list, list) {
973 		if (entry->context == RX_HANDLER_ASYNC_LOCKED)
974 			mutex_lock(&mvm->mutex);
975 		entry->fn(mvm, &entry->rxb);
976 		iwl_free_rxb(&entry->rxb);
977 		list_del(&entry->list);
978 		if (entry->context == RX_HANDLER_ASYNC_LOCKED)
979 			mutex_unlock(&mvm->mutex);
980 		kfree(entry);
981 	}
982 }
983 
984 static inline void iwl_mvm_rx_check_trigger(struct iwl_mvm *mvm,
985 					    struct iwl_rx_packet *pkt)
986 {
987 	struct iwl_fw_dbg_trigger_tlv *trig;
988 	struct iwl_fw_dbg_trigger_cmd *cmds_trig;
989 	int i;
990 
991 	trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, NULL,
992 				     FW_DBG_TRIGGER_FW_NOTIF);
993 	if (!trig)
994 		return;
995 
996 	cmds_trig = (void *)trig->data;
997 
998 	for (i = 0; i < ARRAY_SIZE(cmds_trig->cmds); i++) {
999 		/* don't collect on CMD 0 */
1000 		if (!cmds_trig->cmds[i].cmd_id)
1001 			break;
1002 
1003 		if (cmds_trig->cmds[i].cmd_id != pkt->hdr.cmd ||
1004 		    cmds_trig->cmds[i].group_id != pkt->hdr.group_id)
1005 			continue;
1006 
1007 		iwl_fw_dbg_collect_trig(&mvm->fwrt, trig,
1008 					"CMD 0x%02x.%02x received",
1009 					pkt->hdr.group_id, pkt->hdr.cmd);
1010 		break;
1011 	}
1012 }
1013 
1014 static void iwl_mvm_rx_common(struct iwl_mvm *mvm,
1015 			      struct iwl_rx_cmd_buffer *rxb,
1016 			      struct iwl_rx_packet *pkt)
1017 {
1018 	int i;
1019 	union iwl_dbg_tlv_tp_data tp_data = { .fw_pkt = pkt };
1020 
1021 	iwl_dbg_tlv_time_point(&mvm->fwrt,
1022 			       IWL_FW_INI_TIME_POINT_FW_RSP_OR_NOTIF, &tp_data);
1023 	iwl_mvm_rx_check_trigger(mvm, pkt);
1024 
1025 	/*
1026 	 * Do the notification wait before RX handlers so
1027 	 * even if the RX handler consumes the RXB we have
1028 	 * access to it in the notification wait entry.
1029 	 */
1030 	iwl_notification_wait_notify(&mvm->notif_wait, pkt);
1031 
1032 	for (i = 0; i < ARRAY_SIZE(iwl_mvm_rx_handlers); i++) {
1033 		const struct iwl_rx_handlers *rx_h = &iwl_mvm_rx_handlers[i];
1034 		struct iwl_async_handler_entry *entry;
1035 
1036 		if (rx_h->cmd_id != WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd))
1037 			continue;
1038 
1039 		if (rx_h->context == RX_HANDLER_SYNC) {
1040 			rx_h->fn(mvm, rxb);
1041 			return;
1042 		}
1043 
1044 		entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
1045 		/* we can't do much... */
1046 		if (!entry)
1047 			return;
1048 
1049 		entry->rxb._page = rxb_steal_page(rxb);
1050 		entry->rxb._offset = rxb->_offset;
1051 		entry->rxb._rx_page_order = rxb->_rx_page_order;
1052 		entry->fn = rx_h->fn;
1053 		entry->context = rx_h->context;
1054 		spin_lock(&mvm->async_handlers_lock);
1055 		list_add_tail(&entry->list, &mvm->async_handlers_list);
1056 		spin_unlock(&mvm->async_handlers_lock);
1057 		schedule_work(&mvm->async_handlers_wk);
1058 		break;
1059 	}
1060 }
1061 
1062 static void iwl_mvm_rx(struct iwl_op_mode *op_mode,
1063 		       struct napi_struct *napi,
1064 		       struct iwl_rx_cmd_buffer *rxb)
1065 {
1066 	struct iwl_rx_packet *pkt = rxb_addr(rxb);
1067 	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1068 	u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd);
1069 
1070 	if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD)))
1071 		iwl_mvm_rx_rx_mpdu(mvm, napi, rxb);
1072 	else if (cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_PHY_CMD))
1073 		iwl_mvm_rx_rx_phy_cmd(mvm, rxb);
1074 	else
1075 		iwl_mvm_rx_common(mvm, rxb, pkt);
1076 }
1077 
1078 static void iwl_mvm_rx_mq(struct iwl_op_mode *op_mode,
1079 			  struct napi_struct *napi,
1080 			  struct iwl_rx_cmd_buffer *rxb)
1081 {
1082 	struct iwl_rx_packet *pkt = rxb_addr(rxb);
1083 	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1084 	u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd);
1085 
1086 	if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD)))
1087 		iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, 0);
1088 	else if (unlikely(cmd == WIDE_ID(DATA_PATH_GROUP,
1089 					 RX_QUEUES_NOTIFICATION)))
1090 		iwl_mvm_rx_queue_notif(mvm, napi, rxb, 0);
1091 	else if (cmd == WIDE_ID(LEGACY_GROUP, FRAME_RELEASE))
1092 		iwl_mvm_rx_frame_release(mvm, napi, rxb, 0);
1093 	else if (cmd == WIDE_ID(LEGACY_GROUP, BAR_FRAME_RELEASE))
1094 		iwl_mvm_rx_bar_frame_release(mvm, napi, rxb, 0);
1095 	else if (cmd == WIDE_ID(DATA_PATH_GROUP, RX_NO_DATA_NOTIF))
1096 		iwl_mvm_rx_monitor_no_data(mvm, napi, rxb, 0);
1097 	else
1098 		iwl_mvm_rx_common(mvm, rxb, pkt);
1099 }
1100 
1101 static void iwl_mvm_async_cb(struct iwl_op_mode *op_mode,
1102 			     const struct iwl_device_cmd *cmd)
1103 {
1104 	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1105 
1106 	/*
1107 	 * For now, we only set the CMD_WANT_ASYNC_CALLBACK for ADD_STA
1108 	 * commands that need to block the Tx queues.
1109 	 */
1110 	iwl_trans_block_txq_ptrs(mvm->trans, false);
1111 }
1112 
1113 static int iwl_mvm_is_static_queue(struct iwl_mvm *mvm, int queue)
1114 {
1115 	return queue == mvm->aux_queue || queue == mvm->probe_queue ||
1116 		queue == mvm->p2p_dev_queue || queue == mvm->snif_queue;
1117 }
1118 
1119 static void iwl_mvm_queue_state_change(struct iwl_op_mode *op_mode,
1120 				       int hw_queue, bool start)
1121 {
1122 	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1123 	struct ieee80211_sta *sta;
1124 	struct ieee80211_txq *txq;
1125 	struct iwl_mvm_txq *mvmtxq;
1126 	int i;
1127 	unsigned long tid_bitmap;
1128 	struct iwl_mvm_sta *mvmsta;
1129 	u8 sta_id;
1130 
1131 	sta_id = iwl_mvm_has_new_tx_api(mvm) ?
1132 		mvm->tvqm_info[hw_queue].sta_id :
1133 		mvm->queue_info[hw_queue].ra_sta_id;
1134 
1135 	if (WARN_ON_ONCE(sta_id >= ARRAY_SIZE(mvm->fw_id_to_mac_id)))
1136 		return;
1137 
1138 	rcu_read_lock();
1139 
1140 	sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
1141 	if (IS_ERR_OR_NULL(sta))
1142 		goto out;
1143 	mvmsta = iwl_mvm_sta_from_mac80211(sta);
1144 
1145 	if (iwl_mvm_is_static_queue(mvm, hw_queue)) {
1146 		if (!start)
1147 			ieee80211_stop_queues(mvm->hw);
1148 		else if (mvmsta->sta_state != IEEE80211_STA_NOTEXIST)
1149 			ieee80211_wake_queues(mvm->hw);
1150 
1151 		goto out;
1152 	}
1153 
1154 	if (iwl_mvm_has_new_tx_api(mvm)) {
1155 		int tid = mvm->tvqm_info[hw_queue].txq_tid;
1156 
1157 		tid_bitmap = BIT(tid);
1158 	} else {
1159 		tid_bitmap = mvm->queue_info[hw_queue].tid_bitmap;
1160 	}
1161 
1162 	for_each_set_bit(i, &tid_bitmap, IWL_MAX_TID_COUNT + 1) {
1163 		int tid = i;
1164 
1165 		if (tid == IWL_MAX_TID_COUNT)
1166 			tid = IEEE80211_NUM_TIDS;
1167 
1168 		txq = sta->txq[tid];
1169 		mvmtxq = iwl_mvm_txq_from_mac80211(txq);
1170 		mvmtxq->stopped = !start;
1171 
1172 		if (start && mvmsta->sta_state != IEEE80211_STA_NOTEXIST)
1173 			iwl_mvm_mac_itxq_xmit(mvm->hw, txq);
1174 	}
1175 
1176 out:
1177 	rcu_read_unlock();
1178 }
1179 
1180 static void iwl_mvm_stop_sw_queue(struct iwl_op_mode *op_mode, int hw_queue)
1181 {
1182 	iwl_mvm_queue_state_change(op_mode, hw_queue, false);
1183 }
1184 
1185 static void iwl_mvm_wake_sw_queue(struct iwl_op_mode *op_mode, int hw_queue)
1186 {
1187 	iwl_mvm_queue_state_change(op_mode, hw_queue, true);
1188 }
1189 
1190 static void iwl_mvm_set_rfkill_state(struct iwl_mvm *mvm)
1191 {
1192 	bool state = iwl_mvm_is_radio_killed(mvm);
1193 
1194 	if (state)
1195 		wake_up(&mvm->rx_sync_waitq);
1196 
1197 	wiphy_rfkill_set_hw_state(mvm->hw->wiphy, state);
1198 }
1199 
1200 void iwl_mvm_set_hw_ctkill_state(struct iwl_mvm *mvm, bool state)
1201 {
1202 	if (state)
1203 		set_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
1204 	else
1205 		clear_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
1206 
1207 	iwl_mvm_set_rfkill_state(mvm);
1208 }
1209 
1210 static bool iwl_mvm_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state)
1211 {
1212 	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1213 	bool rfkill_safe_init_done = READ_ONCE(mvm->rfkill_safe_init_done);
1214 	bool unified = iwl_mvm_has_unified_ucode(mvm);
1215 
1216 	if (state)
1217 		set_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
1218 	else
1219 		clear_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
1220 
1221 	iwl_mvm_set_rfkill_state(mvm);
1222 
1223 	 /* iwl_run_init_mvm_ucode is waiting for results, abort it. */
1224 	if (rfkill_safe_init_done)
1225 		iwl_abort_notification_waits(&mvm->notif_wait);
1226 
1227 	/*
1228 	 * Don't ask the transport to stop the firmware. We'll do it
1229 	 * after cfg80211 takes us down.
1230 	 */
1231 	if (unified)
1232 		return false;
1233 
1234 	/*
1235 	 * Stop the device if we run OPERATIONAL firmware or if we are in the
1236 	 * middle of the calibrations.
1237 	 */
1238 	return state && rfkill_safe_init_done;
1239 }
1240 
1241 static void iwl_mvm_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb)
1242 {
1243 	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1244 	struct ieee80211_tx_info *info;
1245 
1246 	info = IEEE80211_SKB_CB(skb);
1247 	iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]);
1248 	ieee80211_free_txskb(mvm->hw, skb);
1249 }
1250 
1251 struct iwl_mvm_reprobe {
1252 	struct device *dev;
1253 	struct work_struct work;
1254 };
1255 
1256 static void iwl_mvm_reprobe_wk(struct work_struct *wk)
1257 {
1258 	struct iwl_mvm_reprobe *reprobe;
1259 
1260 	reprobe = container_of(wk, struct iwl_mvm_reprobe, work);
1261 	if (device_reprobe(reprobe->dev))
1262 		dev_err(reprobe->dev, "reprobe failed!\n");
1263 	kfree(reprobe);
1264 	module_put(THIS_MODULE);
1265 }
1266 
1267 void iwl_mvm_nic_restart(struct iwl_mvm *mvm, bool fw_error)
1268 {
1269 	iwl_abort_notification_waits(&mvm->notif_wait);
1270 	iwl_dbg_tlv_del_timers(mvm->trans);
1271 
1272 	/*
1273 	 * This is a bit racy, but worst case we tell mac80211 about
1274 	 * a stopped/aborted scan when that was already done which
1275 	 * is not a problem. It is necessary to abort any os scan
1276 	 * here because mac80211 requires having the scan cleared
1277 	 * before restarting.
1278 	 * We'll reset the scan_status to NONE in restart cleanup in
1279 	 * the next start() call from mac80211. If restart isn't called
1280 	 * (no fw restart) scan status will stay busy.
1281 	 */
1282 	iwl_mvm_report_scan_aborted(mvm);
1283 
1284 	/*
1285 	 * If we're restarting already, don't cycle restarts.
1286 	 * If INIT fw asserted, it will likely fail again.
1287 	 * If WoWLAN fw asserted, don't restart either, mac80211
1288 	 * can't recover this since we're already half suspended.
1289 	 */
1290 	if (!mvm->fw_restart && fw_error) {
1291 		iwl_fw_error_collect(&mvm->fwrt);
1292 	} else if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1293 		struct iwl_mvm_reprobe *reprobe;
1294 
1295 		IWL_ERR(mvm,
1296 			"Firmware error during reconfiguration - reprobe!\n");
1297 
1298 		/*
1299 		 * get a module reference to avoid doing this while unloading
1300 		 * anyway and to avoid scheduling a work with code that's
1301 		 * being removed.
1302 		 */
1303 		if (!try_module_get(THIS_MODULE)) {
1304 			IWL_ERR(mvm, "Module is being unloaded - abort\n");
1305 			return;
1306 		}
1307 
1308 		reprobe = kzalloc(sizeof(*reprobe), GFP_ATOMIC);
1309 		if (!reprobe) {
1310 			module_put(THIS_MODULE);
1311 			return;
1312 		}
1313 		reprobe->dev = mvm->trans->dev;
1314 		INIT_WORK(&reprobe->work, iwl_mvm_reprobe_wk);
1315 		schedule_work(&reprobe->work);
1316 	} else if (test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED,
1317 			    &mvm->status)) {
1318 		IWL_ERR(mvm, "HW restart already requested, but not started\n");
1319 	} else if (mvm->fwrt.cur_fw_img == IWL_UCODE_REGULAR &&
1320 		   mvm->hw_registered &&
1321 		   !test_bit(STATUS_TRANS_DEAD, &mvm->trans->status)) {
1322 		if (mvm->fw->ucode_capa.error_log_size) {
1323 			u32 src_size = mvm->fw->ucode_capa.error_log_size;
1324 			u32 src_addr = mvm->fw->ucode_capa.error_log_addr;
1325 			u8 *recover_buf = kzalloc(src_size, GFP_ATOMIC);
1326 
1327 			if (recover_buf) {
1328 				mvm->error_recovery_buf = recover_buf;
1329 				iwl_trans_read_mem_bytes(mvm->trans,
1330 							 src_addr,
1331 							 recover_buf,
1332 							 src_size);
1333 			}
1334 		}
1335 
1336 		iwl_fw_error_collect(&mvm->fwrt);
1337 
1338 		if (fw_error && mvm->fw_restart > 0)
1339 			mvm->fw_restart--;
1340 		set_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status);
1341 		ieee80211_restart_hw(mvm->hw);
1342 	}
1343 }
1344 
1345 static void iwl_mvm_nic_error(struct iwl_op_mode *op_mode)
1346 {
1347 	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1348 
1349 	if (!test_bit(STATUS_TRANS_DEAD, &mvm->trans->status))
1350 		iwl_mvm_dump_nic_error_log(mvm);
1351 
1352 	iwl_mvm_nic_restart(mvm, true);
1353 }
1354 
1355 static void iwl_mvm_cmd_queue_full(struct iwl_op_mode *op_mode)
1356 {
1357 	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1358 
1359 	WARN_ON(1);
1360 	iwl_mvm_nic_restart(mvm, true);
1361 }
1362 
1363 #define IWL_MVM_COMMON_OPS					\
1364 	/* these could be differentiated */			\
1365 	.async_cb = iwl_mvm_async_cb,				\
1366 	.queue_full = iwl_mvm_stop_sw_queue,			\
1367 	.queue_not_full = iwl_mvm_wake_sw_queue,		\
1368 	.hw_rf_kill = iwl_mvm_set_hw_rfkill_state,		\
1369 	.free_skb = iwl_mvm_free_skb,				\
1370 	.nic_error = iwl_mvm_nic_error,				\
1371 	.cmd_queue_full = iwl_mvm_cmd_queue_full,		\
1372 	.nic_config = iwl_mvm_nic_config,			\
1373 	/* as we only register one, these MUST be common! */	\
1374 	.start = iwl_op_mode_mvm_start,				\
1375 	.stop = iwl_op_mode_mvm_stop
1376 
1377 static const struct iwl_op_mode_ops iwl_mvm_ops = {
1378 	IWL_MVM_COMMON_OPS,
1379 	.rx = iwl_mvm_rx,
1380 };
1381 
1382 static void iwl_mvm_rx_mq_rss(struct iwl_op_mode *op_mode,
1383 			      struct napi_struct *napi,
1384 			      struct iwl_rx_cmd_buffer *rxb,
1385 			      unsigned int queue)
1386 {
1387 	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1388 	struct iwl_rx_packet *pkt = rxb_addr(rxb);
1389 	u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd);
1390 
1391 	if (unlikely(cmd == WIDE_ID(LEGACY_GROUP, FRAME_RELEASE)))
1392 		iwl_mvm_rx_frame_release(mvm, napi, rxb, queue);
1393 	else if (unlikely(cmd == WIDE_ID(DATA_PATH_GROUP,
1394 					 RX_QUEUES_NOTIFICATION)))
1395 		iwl_mvm_rx_queue_notif(mvm, napi, rxb, queue);
1396 	else if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD)))
1397 		iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, queue);
1398 }
1399 
1400 static const struct iwl_op_mode_ops iwl_mvm_ops_mq = {
1401 	IWL_MVM_COMMON_OPS,
1402 	.rx = iwl_mvm_rx_mq,
1403 	.rx_rss = iwl_mvm_rx_mq_rss,
1404 };
1405