xref: /openbmc/linux/drivers/net/wireless/intel/iwlwifi/mvm/ops.c (revision b68fc09be48edbc47de1a0f3d42ef8adf6c0ac55)
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        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        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/api/scan.h"
86 #include "fw/acpi.h"
87 
88 #define DRV_DESCRIPTION	"The new Intel(R) wireless AGN driver for Linux"
89 MODULE_DESCRIPTION(DRV_DESCRIPTION);
90 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
91 MODULE_LICENSE("GPL");
92 
93 static const struct iwl_op_mode_ops iwl_mvm_ops;
94 static const struct iwl_op_mode_ops iwl_mvm_ops_mq;
95 
96 struct iwl_mvm_mod_params iwlmvm_mod_params = {
97 	.power_scheme = IWL_POWER_SCHEME_BPS,
98 	.tfd_q_hang_detect = true
99 	/* rest of fields are 0 by default */
100 };
101 
102 module_param_named(init_dbg, iwlmvm_mod_params.init_dbg, bool, 0444);
103 MODULE_PARM_DESC(init_dbg,
104 		 "set to true to debug an ASSERT in INIT fw (default: false");
105 module_param_named(power_scheme, iwlmvm_mod_params.power_scheme, int, 0444);
106 MODULE_PARM_DESC(power_scheme,
107 		 "power management scheme: 1-active, 2-balanced, 3-low power, default: 2");
108 module_param_named(tfd_q_hang_detect, iwlmvm_mod_params.tfd_q_hang_detect,
109 		   bool, 0444);
110 MODULE_PARM_DESC(tfd_q_hang_detect,
111 		 "TFD queues hang detection (default: true");
112 
113 /*
114  * module init and exit functions
115  */
116 static int __init iwl_mvm_init(void)
117 {
118 	int ret;
119 
120 	ret = iwl_mvm_rate_control_register();
121 	if (ret) {
122 		pr_err("Unable to register rate control algorithm: %d\n", ret);
123 		return ret;
124 	}
125 
126 	ret = iwl_opmode_register("iwlmvm", &iwl_mvm_ops);
127 	if (ret)
128 		pr_err("Unable to register MVM op_mode: %d\n", ret);
129 
130 	return ret;
131 }
132 module_init(iwl_mvm_init);
133 
134 static void __exit iwl_mvm_exit(void)
135 {
136 	iwl_opmode_deregister("iwlmvm");
137 	iwl_mvm_rate_control_unregister();
138 }
139 module_exit(iwl_mvm_exit);
140 
141 static void iwl_mvm_nic_config(struct iwl_op_mode *op_mode)
142 {
143 	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
144 	u8 radio_cfg_type, radio_cfg_step, radio_cfg_dash;
145 	u32 reg_val = 0;
146 	u32 phy_config = iwl_mvm_get_phy_config(mvm);
147 
148 	radio_cfg_type = (phy_config & FW_PHY_CFG_RADIO_TYPE) >>
149 			 FW_PHY_CFG_RADIO_TYPE_POS;
150 	radio_cfg_step = (phy_config & FW_PHY_CFG_RADIO_STEP) >>
151 			 FW_PHY_CFG_RADIO_STEP_POS;
152 	radio_cfg_dash = (phy_config & FW_PHY_CFG_RADIO_DASH) >>
153 			 FW_PHY_CFG_RADIO_DASH_POS;
154 
155 	/* SKU control */
156 	reg_val |= CSR_HW_REV_STEP(mvm->trans->hw_rev) <<
157 				CSR_HW_IF_CONFIG_REG_POS_MAC_STEP;
158 	reg_val |= CSR_HW_REV_DASH(mvm->trans->hw_rev) <<
159 				CSR_HW_IF_CONFIG_REG_POS_MAC_DASH;
160 
161 	/* radio configuration */
162 	reg_val |= radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE;
163 	reg_val |= radio_cfg_step << CSR_HW_IF_CONFIG_REG_POS_PHY_STEP;
164 	reg_val |= radio_cfg_dash << CSR_HW_IF_CONFIG_REG_POS_PHY_DASH;
165 
166 	WARN_ON((radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE) &
167 		 ~CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE);
168 
169 	/*
170 	 * TODO: Bits 7-8 of CSR in 8000 HW family and higher set the ADC
171 	 * sampling, and shouldn't be set to any non-zero value.
172 	 * The same is supposed to be true of the other HW, but unsetting
173 	 * them (such as the 7260) causes automatic tests to fail on seemingly
174 	 * unrelated errors. Need to further investigate this, but for now
175 	 * we'll separate cases.
176 	 */
177 	if (mvm->trans->cfg->device_family < IWL_DEVICE_FAMILY_8000)
178 		reg_val |= CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI;
179 
180 	if (iwl_fw_dbg_is_d3_debug_enabled(&mvm->fwrt))
181 		reg_val |= CSR_HW_IF_CONFIG_REG_D3_DEBUG;
182 
183 	iwl_trans_set_bits_mask(mvm->trans, CSR_HW_IF_CONFIG_REG,
184 				CSR_HW_IF_CONFIG_REG_MSK_MAC_DASH |
185 				CSR_HW_IF_CONFIG_REG_MSK_MAC_STEP |
186 				CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE |
187 				CSR_HW_IF_CONFIG_REG_MSK_PHY_STEP |
188 				CSR_HW_IF_CONFIG_REG_MSK_PHY_DASH |
189 				CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI |
190 				CSR_HW_IF_CONFIG_REG_BIT_MAC_SI   |
191 				CSR_HW_IF_CONFIG_REG_D3_DEBUG,
192 				reg_val);
193 
194 	IWL_DEBUG_INFO(mvm, "Radio type=0x%x-0x%x-0x%x\n", radio_cfg_type,
195 		       radio_cfg_step, radio_cfg_dash);
196 
197 	/*
198 	 * W/A : NIC is stuck in a reset state after Early PCIe power off
199 	 * (PCIe power is lost before PERST# is asserted), causing ME FW
200 	 * to lose ownership and not being able to obtain it back.
201 	 */
202 	if (!mvm->trans->cfg->apmg_not_supported)
203 		iwl_set_bits_mask_prph(mvm->trans, APMG_PS_CTRL_REG,
204 				       APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS,
205 				       ~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS);
206 }
207 
208 /**
209  * enum iwl_rx_handler_context context for Rx handler
210  * @RX_HANDLER_SYNC : this means that it will be called in the Rx path
211  *	which can't acquire mvm->mutex.
212  * @RX_HANDLER_ASYNC_LOCKED : If the handler needs to hold mvm->mutex
213  *	(and only in this case!), it should be set as ASYNC. In that case,
214  *	it will be called from a worker with mvm->mutex held.
215  * @RX_HANDLER_ASYNC_UNLOCKED : in case the handler needs to lock the
216  *	mutex itself, it will be called from a worker without mvm->mutex held.
217  */
218 enum iwl_rx_handler_context {
219 	RX_HANDLER_SYNC,
220 	RX_HANDLER_ASYNC_LOCKED,
221 	RX_HANDLER_ASYNC_UNLOCKED,
222 };
223 
224 /**
225  * struct iwl_rx_handlers handler for FW notification
226  * @cmd_id: command id
227  * @context: see &iwl_rx_handler_context
228  * @fn: the function is called when notification is received
229  */
230 struct iwl_rx_handlers {
231 	u16 cmd_id;
232 	enum iwl_rx_handler_context context;
233 	void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb);
234 };
235 
236 #define RX_HANDLER(_cmd_id, _fn, _context)	\
237 	{ .cmd_id = _cmd_id, .fn = _fn, .context = _context }
238 #define RX_HANDLER_GRP(_grp, _cmd, _fn, _context)	\
239 	{ .cmd_id = WIDE_ID(_grp, _cmd), .fn = _fn, .context = _context }
240 
241 /*
242  * Handlers for fw notifications
243  * Convention: RX_HANDLER(CMD_NAME, iwl_mvm_rx_CMD_NAME
244  * This list should be in order of frequency for performance purposes.
245  *
246  * The handler can be one from three contexts, see &iwl_rx_handler_context
247  */
248 static const struct iwl_rx_handlers iwl_mvm_rx_handlers[] = {
249 	RX_HANDLER(TX_CMD, iwl_mvm_rx_tx_cmd, RX_HANDLER_SYNC),
250 	RX_HANDLER(BA_NOTIF, iwl_mvm_rx_ba_notif, RX_HANDLER_SYNC),
251 
252 	RX_HANDLER_GRP(DATA_PATH_GROUP, TLC_MNG_UPDATE_NOTIF,
253 		       iwl_mvm_tlc_update_notif, RX_HANDLER_SYNC),
254 
255 	RX_HANDLER(BT_PROFILE_NOTIFICATION, iwl_mvm_rx_bt_coex_notif,
256 		   RX_HANDLER_ASYNC_LOCKED),
257 	RX_HANDLER(BEACON_NOTIFICATION, iwl_mvm_rx_beacon_notif,
258 		   RX_HANDLER_ASYNC_LOCKED),
259 	RX_HANDLER(STATISTICS_NOTIFICATION, iwl_mvm_rx_statistics,
260 		   RX_HANDLER_ASYNC_LOCKED),
261 
262 	RX_HANDLER(BA_WINDOW_STATUS_NOTIFICATION_ID,
263 		   iwl_mvm_window_status_notif, RX_HANDLER_SYNC),
264 
265 	RX_HANDLER(TIME_EVENT_NOTIFICATION, iwl_mvm_rx_time_event_notif,
266 		   RX_HANDLER_SYNC),
267 	RX_HANDLER(MCC_CHUB_UPDATE_CMD, iwl_mvm_rx_chub_update_mcc,
268 		   RX_HANDLER_ASYNC_LOCKED),
269 
270 	RX_HANDLER(EOSP_NOTIFICATION, iwl_mvm_rx_eosp_notif, RX_HANDLER_SYNC),
271 
272 	RX_HANDLER(SCAN_ITERATION_COMPLETE,
273 		   iwl_mvm_rx_lmac_scan_iter_complete_notif, RX_HANDLER_SYNC),
274 	RX_HANDLER(SCAN_OFFLOAD_COMPLETE,
275 		   iwl_mvm_rx_lmac_scan_complete_notif,
276 		   RX_HANDLER_ASYNC_LOCKED),
277 	RX_HANDLER(MATCH_FOUND_NOTIFICATION, iwl_mvm_rx_scan_match_found,
278 		   RX_HANDLER_SYNC),
279 	RX_HANDLER(SCAN_COMPLETE_UMAC, iwl_mvm_rx_umac_scan_complete_notif,
280 		   RX_HANDLER_ASYNC_LOCKED),
281 	RX_HANDLER(SCAN_ITERATION_COMPLETE_UMAC,
282 		   iwl_mvm_rx_umac_scan_iter_complete_notif, RX_HANDLER_SYNC),
283 
284 	RX_HANDLER(CARD_STATE_NOTIFICATION, iwl_mvm_rx_card_state_notif,
285 		   RX_HANDLER_SYNC),
286 
287 	RX_HANDLER(MISSED_BEACONS_NOTIFICATION, iwl_mvm_rx_missed_beacons_notif,
288 		   RX_HANDLER_SYNC),
289 
290 	RX_HANDLER(REPLY_ERROR, iwl_mvm_rx_fw_error, RX_HANDLER_SYNC),
291 	RX_HANDLER(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION,
292 		   iwl_mvm_power_uapsd_misbehaving_ap_notif, RX_HANDLER_SYNC),
293 	RX_HANDLER(DTS_MEASUREMENT_NOTIFICATION, iwl_mvm_temp_notif,
294 		   RX_HANDLER_ASYNC_LOCKED),
295 	RX_HANDLER_GRP(PHY_OPS_GROUP, DTS_MEASUREMENT_NOTIF_WIDE,
296 		       iwl_mvm_temp_notif, RX_HANDLER_ASYNC_UNLOCKED),
297 	RX_HANDLER_GRP(PHY_OPS_GROUP, CT_KILL_NOTIFICATION,
298 		       iwl_mvm_ct_kill_notif, RX_HANDLER_SYNC),
299 
300 	RX_HANDLER(TDLS_CHANNEL_SWITCH_NOTIFICATION, iwl_mvm_rx_tdls_notif,
301 		   RX_HANDLER_ASYNC_LOCKED),
302 	RX_HANDLER(MFUART_LOAD_NOTIFICATION, iwl_mvm_rx_mfuart_notif,
303 		   RX_HANDLER_SYNC),
304 	RX_HANDLER(TOF_NOTIFICATION, iwl_mvm_tof_resp_handler,
305 		   RX_HANDLER_ASYNC_LOCKED),
306 	RX_HANDLER_GRP(DEBUG_GROUP, MFU_ASSERT_DUMP_NTF,
307 		       iwl_mvm_mfu_assert_dump_notif, RX_HANDLER_SYNC),
308 	RX_HANDLER_GRP(PROT_OFFLOAD_GROUP, STORED_BEACON_NTF,
309 		       iwl_mvm_rx_stored_beacon_notif, RX_HANDLER_SYNC),
310 	RX_HANDLER_GRP(DATA_PATH_GROUP, MU_GROUP_MGMT_NOTIF,
311 		       iwl_mvm_mu_mimo_grp_notif, RX_HANDLER_SYNC),
312 	RX_HANDLER_GRP(DATA_PATH_GROUP, STA_PM_NOTIF,
313 		       iwl_mvm_sta_pm_notif, RX_HANDLER_SYNC),
314 };
315 #undef RX_HANDLER
316 #undef RX_HANDLER_GRP
317 
318 /* Please keep this array *SORTED* by hex value.
319  * Access is done through binary search
320  */
321 static const struct iwl_hcmd_names iwl_mvm_legacy_names[] = {
322 	HCMD_NAME(MVM_ALIVE),
323 	HCMD_NAME(REPLY_ERROR),
324 	HCMD_NAME(ECHO_CMD),
325 	HCMD_NAME(INIT_COMPLETE_NOTIF),
326 	HCMD_NAME(PHY_CONTEXT_CMD),
327 	HCMD_NAME(DBG_CFG),
328 	HCMD_NAME(SCAN_CFG_CMD),
329 	HCMD_NAME(SCAN_REQ_UMAC),
330 	HCMD_NAME(SCAN_ABORT_UMAC),
331 	HCMD_NAME(SCAN_COMPLETE_UMAC),
332 	HCMD_NAME(TOF_CMD),
333 	HCMD_NAME(TOF_NOTIFICATION),
334 	HCMD_NAME(BA_WINDOW_STATUS_NOTIFICATION_ID),
335 	HCMD_NAME(ADD_STA_KEY),
336 	HCMD_NAME(ADD_STA),
337 	HCMD_NAME(REMOVE_STA),
338 	HCMD_NAME(FW_GET_ITEM_CMD),
339 	HCMD_NAME(TX_CMD),
340 	HCMD_NAME(SCD_QUEUE_CFG),
341 	HCMD_NAME(TXPATH_FLUSH),
342 	HCMD_NAME(MGMT_MCAST_KEY),
343 	HCMD_NAME(WEP_KEY),
344 	HCMD_NAME(SHARED_MEM_CFG),
345 	HCMD_NAME(TDLS_CHANNEL_SWITCH_CMD),
346 	HCMD_NAME(MAC_CONTEXT_CMD),
347 	HCMD_NAME(TIME_EVENT_CMD),
348 	HCMD_NAME(TIME_EVENT_NOTIFICATION),
349 	HCMD_NAME(BINDING_CONTEXT_CMD),
350 	HCMD_NAME(TIME_QUOTA_CMD),
351 	HCMD_NAME(NON_QOS_TX_COUNTER_CMD),
352 	HCMD_NAME(LEDS_CMD),
353 	HCMD_NAME(LQ_CMD),
354 	HCMD_NAME(FW_PAGING_BLOCK_CMD),
355 	HCMD_NAME(SCAN_OFFLOAD_REQUEST_CMD),
356 	HCMD_NAME(SCAN_OFFLOAD_ABORT_CMD),
357 	HCMD_NAME(HOT_SPOT_CMD),
358 	HCMD_NAME(SCAN_OFFLOAD_PROFILES_QUERY_CMD),
359 	HCMD_NAME(BT_COEX_UPDATE_REDUCED_TXP),
360 	HCMD_NAME(BT_COEX_CI),
361 	HCMD_NAME(PHY_CONFIGURATION_CMD),
362 	HCMD_NAME(CALIB_RES_NOTIF_PHY_DB),
363 	HCMD_NAME(PHY_DB_CMD),
364 	HCMD_NAME(SCAN_OFFLOAD_COMPLETE),
365 	HCMD_NAME(SCAN_OFFLOAD_UPDATE_PROFILES_CMD),
366 	HCMD_NAME(POWER_TABLE_CMD),
367 	HCMD_NAME(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION),
368 	HCMD_NAME(REPLY_THERMAL_MNG_BACKOFF),
369 	HCMD_NAME(DC2DC_CONFIG_CMD),
370 	HCMD_NAME(NVM_ACCESS_CMD),
371 	HCMD_NAME(BEACON_NOTIFICATION),
372 	HCMD_NAME(BEACON_TEMPLATE_CMD),
373 	HCMD_NAME(TX_ANT_CONFIGURATION_CMD),
374 	HCMD_NAME(BT_CONFIG),
375 	HCMD_NAME(STATISTICS_CMD),
376 	HCMD_NAME(STATISTICS_NOTIFICATION),
377 	HCMD_NAME(EOSP_NOTIFICATION),
378 	HCMD_NAME(REDUCE_TX_POWER_CMD),
379 	HCMD_NAME(CARD_STATE_NOTIFICATION),
380 	HCMD_NAME(MISSED_BEACONS_NOTIFICATION),
381 	HCMD_NAME(TDLS_CONFIG_CMD),
382 	HCMD_NAME(MAC_PM_POWER_TABLE),
383 	HCMD_NAME(TDLS_CHANNEL_SWITCH_NOTIFICATION),
384 	HCMD_NAME(MFUART_LOAD_NOTIFICATION),
385 	HCMD_NAME(RSS_CONFIG_CMD),
386 	HCMD_NAME(SCAN_ITERATION_COMPLETE_UMAC),
387 	HCMD_NAME(REPLY_RX_PHY_CMD),
388 	HCMD_NAME(REPLY_RX_MPDU_CMD),
389 	HCMD_NAME(FRAME_RELEASE),
390 	HCMD_NAME(BA_NOTIF),
391 	HCMD_NAME(MCC_UPDATE_CMD),
392 	HCMD_NAME(MCC_CHUB_UPDATE_CMD),
393 	HCMD_NAME(MARKER_CMD),
394 	HCMD_NAME(BT_PROFILE_NOTIFICATION),
395 	HCMD_NAME(BCAST_FILTER_CMD),
396 	HCMD_NAME(MCAST_FILTER_CMD),
397 	HCMD_NAME(REPLY_SF_CFG_CMD),
398 	HCMD_NAME(REPLY_BEACON_FILTERING_CMD),
399 	HCMD_NAME(D3_CONFIG_CMD),
400 	HCMD_NAME(PROT_OFFLOAD_CONFIG_CMD),
401 	HCMD_NAME(OFFLOADS_QUERY_CMD),
402 	HCMD_NAME(REMOTE_WAKE_CONFIG_CMD),
403 	HCMD_NAME(MATCH_FOUND_NOTIFICATION),
404 	HCMD_NAME(DTS_MEASUREMENT_NOTIFICATION),
405 	HCMD_NAME(WOWLAN_PATTERNS),
406 	HCMD_NAME(WOWLAN_CONFIGURATION),
407 	HCMD_NAME(WOWLAN_TSC_RSC_PARAM),
408 	HCMD_NAME(WOWLAN_TKIP_PARAM),
409 	HCMD_NAME(WOWLAN_KEK_KCK_MATERIAL),
410 	HCMD_NAME(WOWLAN_GET_STATUSES),
411 	HCMD_NAME(SCAN_ITERATION_COMPLETE),
412 	HCMD_NAME(D0I3_END_CMD),
413 	HCMD_NAME(LTR_CONFIG),
414 };
415 
416 /* Please keep this array *SORTED* by hex value.
417  * Access is done through binary search
418  */
419 static const struct iwl_hcmd_names iwl_mvm_system_names[] = {
420 	HCMD_NAME(SHARED_MEM_CFG_CMD),
421 	HCMD_NAME(INIT_EXTENDED_CFG_CMD),
422 };
423 
424 /* Please keep this array *SORTED* by hex value.
425  * Access is done through binary search
426  */
427 static const struct iwl_hcmd_names iwl_mvm_mac_conf_names[] = {
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_HE_CTXT_CMD),
451 	HCMD_NAME(RFH_QUEUE_CONFIG_CMD),
452 	HCMD_NAME(STA_PM_NOTIF),
453 	HCMD_NAME(MU_GROUP_MGMT_NOTIF),
454 	HCMD_NAME(RX_QUEUES_NOTIFICATION),
455 };
456 
457 /* Please keep this array *SORTED* by hex value.
458  * Access is done through binary search
459  */
460 static const struct iwl_hcmd_names iwl_mvm_debug_names[] = {
461 	HCMD_NAME(MFU_ASSERT_DUMP_NTF),
462 };
463 
464 /* Please keep this array *SORTED* by hex value.
465  * Access is done through binary search
466  */
467 static const struct iwl_hcmd_names iwl_mvm_prot_offload_names[] = {
468 	HCMD_NAME(STORED_BEACON_NTF),
469 };
470 
471 /* Please keep this array *SORTED* by hex value.
472  * Access is done through binary search
473  */
474 static const struct iwl_hcmd_names iwl_mvm_regulatory_and_nvm_names[] = {
475 	HCMD_NAME(NVM_ACCESS_COMPLETE),
476 	HCMD_NAME(NVM_GET_INFO),
477 };
478 
479 static const struct iwl_hcmd_arr iwl_mvm_groups[] = {
480 	[LEGACY_GROUP] = HCMD_ARR(iwl_mvm_legacy_names),
481 	[LONG_GROUP] = HCMD_ARR(iwl_mvm_legacy_names),
482 	[SYSTEM_GROUP] = HCMD_ARR(iwl_mvm_system_names),
483 	[MAC_CONF_GROUP] = HCMD_ARR(iwl_mvm_mac_conf_names),
484 	[PHY_OPS_GROUP] = HCMD_ARR(iwl_mvm_phy_names),
485 	[DATA_PATH_GROUP] = HCMD_ARR(iwl_mvm_data_path_names),
486 	[PROT_OFFLOAD_GROUP] = HCMD_ARR(iwl_mvm_prot_offload_names),
487 	[REGULATORY_AND_NVM_GROUP] =
488 		HCMD_ARR(iwl_mvm_regulatory_and_nvm_names),
489 };
490 
491 /* this forward declaration can avoid to export the function */
492 static void iwl_mvm_async_handlers_wk(struct work_struct *wk);
493 #ifdef CONFIG_PM
494 static void iwl_mvm_d0i3_exit_work(struct work_struct *wk);
495 #endif
496 
497 static u32 iwl_mvm_min_backoff(struct iwl_mvm *mvm)
498 {
499 	const struct iwl_pwr_tx_backoff *backoff = mvm->cfg->pwr_tx_backoffs;
500 	u64 dflt_pwr_limit;
501 
502 	if (!backoff)
503 		return 0;
504 
505 	dflt_pwr_limit = iwl_acpi_get_pwr_limit(mvm->dev);
506 
507 	while (backoff->pwr) {
508 		if (dflt_pwr_limit >= backoff->pwr)
509 			return backoff->backoff;
510 
511 		backoff++;
512 	}
513 
514 	return 0;
515 }
516 
517 static void iwl_mvm_tx_unblock_dwork(struct work_struct *work)
518 {
519 	struct iwl_mvm *mvm =
520 		container_of(work, struct iwl_mvm, cs_tx_unblock_dwork.work);
521 	struct ieee80211_vif *tx_blocked_vif;
522 	struct iwl_mvm_vif *mvmvif;
523 
524 	mutex_lock(&mvm->mutex);
525 
526 	tx_blocked_vif =
527 		rcu_dereference_protected(mvm->csa_tx_blocked_vif,
528 					  lockdep_is_held(&mvm->mutex));
529 
530 	if (!tx_blocked_vif)
531 		goto unlock;
532 
533 	mvmvif = iwl_mvm_vif_from_mac80211(tx_blocked_vif);
534 	iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, false);
535 	RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
536 unlock:
537 	mutex_unlock(&mvm->mutex);
538 }
539 
540 static int iwl_mvm_fwrt_dump_start(void *ctx)
541 {
542 	struct iwl_mvm *mvm = ctx;
543 	int ret;
544 
545 	ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_FW_DBG_COLLECT);
546 	if (ret)
547 		return ret;
548 
549 	mutex_lock(&mvm->mutex);
550 
551 	return 0;
552 }
553 
554 static void iwl_mvm_fwrt_dump_end(void *ctx)
555 {
556 	struct iwl_mvm *mvm = ctx;
557 
558 	mutex_unlock(&mvm->mutex);
559 
560 	iwl_mvm_unref(mvm, IWL_MVM_REF_FW_DBG_COLLECT);
561 }
562 
563 static bool iwl_mvm_fwrt_fw_running(void *ctx)
564 {
565 	return iwl_mvm_firmware_running(ctx);
566 }
567 
568 static const struct iwl_fw_runtime_ops iwl_mvm_fwrt_ops = {
569 	.dump_start = iwl_mvm_fwrt_dump_start,
570 	.dump_end = iwl_mvm_fwrt_dump_end,
571 	.fw_running = iwl_mvm_fwrt_fw_running,
572 };
573 
574 static struct iwl_op_mode *
575 iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg,
576 		      const struct iwl_fw *fw, struct dentry *dbgfs_dir)
577 {
578 	struct ieee80211_hw *hw;
579 	struct iwl_op_mode *op_mode;
580 	struct iwl_mvm *mvm;
581 	struct iwl_trans_config trans_cfg = {};
582 	static const u8 no_reclaim_cmds[] = {
583 		TX_CMD,
584 	};
585 	int err, scan_size;
586 	u32 min_backoff;
587 	enum iwl_amsdu_size rb_size_default;
588 
589 	/*
590 	 * We use IWL_MVM_STATION_COUNT to check the validity of the station
591 	 * index all over the driver - check that its value corresponds to the
592 	 * array size.
593 	 */
594 	BUILD_BUG_ON(ARRAY_SIZE(mvm->fw_id_to_mac_id) != IWL_MVM_STATION_COUNT);
595 
596 	/********************************
597 	 * 1. Allocating and configuring HW data
598 	 ********************************/
599 	hw = ieee80211_alloc_hw(sizeof(struct iwl_op_mode) +
600 				sizeof(struct iwl_mvm),
601 				&iwl_mvm_hw_ops);
602 	if (!hw)
603 		return NULL;
604 
605 	if (cfg->max_rx_agg_size)
606 		hw->max_rx_aggregation_subframes = cfg->max_rx_agg_size;
607 
608 	if (cfg->max_tx_agg_size)
609 		hw->max_tx_aggregation_subframes = cfg->max_tx_agg_size;
610 
611 	op_mode = hw->priv;
612 
613 	mvm = IWL_OP_MODE_GET_MVM(op_mode);
614 	mvm->dev = trans->dev;
615 	mvm->trans = trans;
616 	mvm->cfg = cfg;
617 	mvm->fw = fw;
618 	mvm->hw = hw;
619 
620 	iwl_fw_runtime_init(&mvm->fwrt, trans, fw, &iwl_mvm_fwrt_ops, mvm,
621 			    dbgfs_dir);
622 
623 	mvm->init_status = 0;
624 
625 	if (iwl_mvm_has_new_rx_api(mvm)) {
626 		op_mode->ops = &iwl_mvm_ops_mq;
627 		trans->rx_mpdu_cmd_hdr_size =
628 			(trans->cfg->device_family >=
629 			 IWL_DEVICE_FAMILY_22560) ?
630 			sizeof(struct iwl_rx_mpdu_desc) :
631 			IWL_RX_DESC_SIZE_V1;
632 	} else {
633 		op_mode->ops = &iwl_mvm_ops;
634 		trans->rx_mpdu_cmd_hdr_size =
635 			sizeof(struct iwl_rx_mpdu_res_start);
636 
637 		if (WARN_ON(trans->num_rx_queues > 1))
638 			goto out_free;
639 	}
640 
641 	mvm->fw_restart = iwlwifi_mod_params.fw_restart ? -1 : 0;
642 
643 	mvm->aux_queue = IWL_MVM_DQA_AUX_QUEUE;
644 	mvm->snif_queue = IWL_MVM_DQA_INJECT_MONITOR_QUEUE;
645 	mvm->probe_queue = IWL_MVM_DQA_AP_PROBE_RESP_QUEUE;
646 	mvm->p2p_dev_queue = IWL_MVM_DQA_P2P_DEVICE_QUEUE;
647 
648 	mvm->sf_state = SF_UNINIT;
649 	if (iwl_mvm_has_unified_ucode(mvm))
650 		iwl_fw_set_current_image(&mvm->fwrt, IWL_UCODE_REGULAR);
651 	else
652 		iwl_fw_set_current_image(&mvm->fwrt, IWL_UCODE_INIT);
653 	mvm->drop_bcn_ap_mode = true;
654 
655 	mutex_init(&mvm->mutex);
656 	mutex_init(&mvm->d0i3_suspend_mutex);
657 	spin_lock_init(&mvm->async_handlers_lock);
658 	INIT_LIST_HEAD(&mvm->time_event_list);
659 	INIT_LIST_HEAD(&mvm->aux_roc_te_list);
660 	INIT_LIST_HEAD(&mvm->async_handlers_list);
661 	spin_lock_init(&mvm->time_event_lock);
662 	spin_lock_init(&mvm->queue_info_lock);
663 
664 	INIT_WORK(&mvm->async_handlers_wk, iwl_mvm_async_handlers_wk);
665 	INIT_WORK(&mvm->roc_done_wk, iwl_mvm_roc_done_wk);
666 #ifdef CONFIG_PM
667 	INIT_WORK(&mvm->d0i3_exit_work, iwl_mvm_d0i3_exit_work);
668 #endif
669 	INIT_DELAYED_WORK(&mvm->tdls_cs.dwork, iwl_mvm_tdls_ch_switch_work);
670 	INIT_DELAYED_WORK(&mvm->scan_timeout_dwork, iwl_mvm_scan_timeout_wk);
671 	INIT_WORK(&mvm->add_stream_wk, iwl_mvm_add_new_dqa_stream_wk);
672 
673 	spin_lock_init(&mvm->d0i3_tx_lock);
674 	spin_lock_init(&mvm->refs_lock);
675 	skb_queue_head_init(&mvm->d0i3_tx);
676 	init_waitqueue_head(&mvm->d0i3_exit_waitq);
677 	init_waitqueue_head(&mvm->rx_sync_waitq);
678 
679 	atomic_set(&mvm->queue_sync_counter, 0);
680 
681 	SET_IEEE80211_DEV(mvm->hw, mvm->trans->dev);
682 
683 	spin_lock_init(&mvm->tcm.lock);
684 	INIT_DELAYED_WORK(&mvm->tcm.work, iwl_mvm_tcm_work);
685 	mvm->tcm.ts = jiffies;
686 	mvm->tcm.ll_ts = jiffies;
687 	mvm->tcm.uapsd_nonagg_ts = jiffies;
688 
689 	INIT_DELAYED_WORK(&mvm->cs_tx_unblock_dwork, iwl_mvm_tx_unblock_dwork);
690 
691 	/*
692 	 * Populate the state variables that the transport layer needs
693 	 * to know about.
694 	 */
695 	trans_cfg.op_mode = op_mode;
696 	trans_cfg.no_reclaim_cmds = no_reclaim_cmds;
697 	trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds);
698 
699 	if (mvm->trans->cfg->device_family >= IWL_DEVICE_FAMILY_22560)
700 		rb_size_default = IWL_AMSDU_2K;
701 	else
702 		rb_size_default = IWL_AMSDU_4K;
703 
704 	switch (iwlwifi_mod_params.amsdu_size) {
705 	case IWL_AMSDU_DEF:
706 		trans_cfg.rx_buf_size = rb_size_default;
707 		break;
708 	case IWL_AMSDU_4K:
709 		trans_cfg.rx_buf_size = IWL_AMSDU_4K;
710 		break;
711 	case IWL_AMSDU_8K:
712 		trans_cfg.rx_buf_size = IWL_AMSDU_8K;
713 		break;
714 	case IWL_AMSDU_12K:
715 		trans_cfg.rx_buf_size = IWL_AMSDU_12K;
716 		break;
717 	default:
718 		pr_err("%s: Unsupported amsdu_size: %d\n", KBUILD_MODNAME,
719 		       iwlwifi_mod_params.amsdu_size);
720 		trans_cfg.rx_buf_size = rb_size_default;
721 	}
722 
723 	trans->wide_cmd_header = true;
724 	trans_cfg.bc_table_dword =
725 		mvm->trans->cfg->device_family < IWL_DEVICE_FAMILY_22560;
726 
727 	trans_cfg.command_groups = iwl_mvm_groups;
728 	trans_cfg.command_groups_size = ARRAY_SIZE(iwl_mvm_groups);
729 
730 	trans_cfg.cmd_queue = IWL_MVM_DQA_CMD_QUEUE;
731 	trans_cfg.cmd_fifo = IWL_MVM_TX_FIFO_CMD;
732 	trans_cfg.scd_set_active = true;
733 
734 	trans_cfg.cb_data_offs = offsetof(struct ieee80211_tx_info,
735 					  driver_data[2]);
736 
737 	trans_cfg.sw_csum_tx = IWL_MVM_SW_TX_CSUM_OFFLOAD;
738 
739 	/* Set a short watchdog for the command queue */
740 	trans_cfg.cmd_q_wdg_timeout =
741 		iwl_mvm_get_wd_timeout(mvm, NULL, false, true);
742 
743 	snprintf(mvm->hw->wiphy->fw_version,
744 		 sizeof(mvm->hw->wiphy->fw_version),
745 		 "%s", fw->fw_version);
746 
747 	/* Configure transport layer */
748 	iwl_trans_configure(mvm->trans, &trans_cfg);
749 
750 	trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD;
751 	trans->dbg_dest_tlv = mvm->fw->dbg_dest_tlv;
752 	trans->dbg_dest_reg_num = mvm->fw->dbg_dest_reg_num;
753 	memcpy(trans->dbg_conf_tlv, mvm->fw->dbg_conf_tlv,
754 	       sizeof(trans->dbg_conf_tlv));
755 	trans->dbg_trigger_tlv = mvm->fw->dbg_trigger_tlv;
756 	trans->dbg_dump_mask = mvm->fw->dbg_dump_mask;
757 
758 	trans->iml = mvm->fw->iml;
759 	trans->iml_len = mvm->fw->iml_len;
760 
761 	/* set up notification wait support */
762 	iwl_notification_wait_init(&mvm->notif_wait);
763 
764 	/* Init phy db */
765 	mvm->phy_db = iwl_phy_db_init(trans);
766 	if (!mvm->phy_db) {
767 		IWL_ERR(mvm, "Cannot init phy_db\n");
768 		goto out_free;
769 	}
770 
771 	IWL_INFO(mvm, "Detected %s, REV=0x%X\n",
772 		 mvm->cfg->name, mvm->trans->hw_rev);
773 
774 	if (iwlwifi_mod_params.nvm_file)
775 		mvm->nvm_file_name = iwlwifi_mod_params.nvm_file;
776 	else
777 		IWL_DEBUG_EEPROM(mvm->trans->dev,
778 				 "working without external nvm file\n");
779 
780 	err = iwl_trans_start_hw(mvm->trans);
781 	if (err)
782 		goto out_free;
783 
784 	mutex_lock(&mvm->mutex);
785 	iwl_mvm_ref(mvm, IWL_MVM_REF_INIT_UCODE);
786 	err = iwl_run_init_mvm_ucode(mvm, true);
787 	if (!iwlmvm_mod_params.init_dbg || !err)
788 		iwl_mvm_stop_device(mvm);
789 	iwl_mvm_unref(mvm, IWL_MVM_REF_INIT_UCODE);
790 	mutex_unlock(&mvm->mutex);
791 	if (err < 0) {
792 		IWL_ERR(mvm, "Failed to run INIT ucode: %d\n", err);
793 		goto out_free;
794 	}
795 
796 	scan_size = iwl_mvm_scan_size(mvm);
797 
798 	mvm->scan_cmd = kmalloc(scan_size, GFP_KERNEL);
799 	if (!mvm->scan_cmd)
800 		goto out_free;
801 
802 	/* Set EBS as successful as long as not stated otherwise by the FW. */
803 	mvm->last_ebs_successful = true;
804 
805 	err = iwl_mvm_mac_setup_register(mvm);
806 	if (err)
807 		goto out_free;
808 	mvm->hw_registered = true;
809 
810 	min_backoff = iwl_mvm_min_backoff(mvm);
811 	iwl_mvm_thermal_initialize(mvm, min_backoff);
812 
813 	err = iwl_mvm_dbgfs_register(mvm, dbgfs_dir);
814 	if (err)
815 		goto out_unregister;
816 
817 	if (!iwl_mvm_has_new_rx_stats_api(mvm))
818 		memset(&mvm->rx_stats_v3, 0,
819 		       sizeof(struct mvm_statistics_rx_v3));
820 	else
821 		memset(&mvm->rx_stats, 0, sizeof(struct mvm_statistics_rx));
822 
823 	/* The transport always starts with a taken reference, we can
824 	 * release it now if d0i3 is supported */
825 	if (iwl_mvm_is_d0i3_supported(mvm))
826 		iwl_trans_unref(mvm->trans);
827 
828 	iwl_mvm_tof_init(mvm);
829 
830 	return op_mode;
831 
832  out_unregister:
833 	if (iwlmvm_mod_params.init_dbg)
834 		return op_mode;
835 
836 	ieee80211_unregister_hw(mvm->hw);
837 	mvm->hw_registered = false;
838 	iwl_mvm_leds_exit(mvm);
839 	iwl_mvm_thermal_exit(mvm);
840  out_free:
841 	iwl_fw_flush_dump(&mvm->fwrt);
842 
843 	if (iwlmvm_mod_params.init_dbg)
844 		return op_mode;
845 	iwl_phy_db_free(mvm->phy_db);
846 	kfree(mvm->scan_cmd);
847 	iwl_trans_op_mode_leave(trans);
848 
849 	ieee80211_free_hw(mvm->hw);
850 	return NULL;
851 }
852 
853 static void iwl_op_mode_mvm_stop(struct iwl_op_mode *op_mode)
854 {
855 	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
856 	int i;
857 
858 	/* If d0i3 is supported, we have released the reference that
859 	 * the transport started with, so we should take it back now
860 	 * that we are leaving.
861 	 */
862 	if (iwl_mvm_is_d0i3_supported(mvm))
863 		iwl_trans_ref(mvm->trans);
864 
865 	iwl_mvm_leds_exit(mvm);
866 
867 	iwl_mvm_thermal_exit(mvm);
868 
869 	if (mvm->init_status & IWL_MVM_INIT_STATUS_REG_HW_INIT_COMPLETE) {
870 		ieee80211_unregister_hw(mvm->hw);
871 		mvm->init_status &= ~IWL_MVM_INIT_STATUS_REG_HW_INIT_COMPLETE;
872 	}
873 
874 	kfree(mvm->scan_cmd);
875 	kfree(mvm->mcast_filter_cmd);
876 	mvm->mcast_filter_cmd = NULL;
877 
878 #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_IWLWIFI_DEBUGFS)
879 	kfree(mvm->d3_resume_sram);
880 #endif
881 	iwl_trans_op_mode_leave(mvm->trans);
882 
883 	iwl_phy_db_free(mvm->phy_db);
884 	mvm->phy_db = NULL;
885 
886 	kfree(mvm->nvm_data);
887 	for (i = 0; i < NVM_MAX_NUM_SECTIONS; i++)
888 		kfree(mvm->nvm_sections[i].data);
889 
890 	cancel_delayed_work_sync(&mvm->tcm.work);
891 
892 	iwl_mvm_tof_clean(mvm);
893 
894 	mutex_destroy(&mvm->mutex);
895 	mutex_destroy(&mvm->d0i3_suspend_mutex);
896 
897 	ieee80211_free_hw(mvm->hw);
898 }
899 
900 struct iwl_async_handler_entry {
901 	struct list_head list;
902 	struct iwl_rx_cmd_buffer rxb;
903 	enum iwl_rx_handler_context context;
904 	void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb);
905 };
906 
907 void iwl_mvm_async_handlers_purge(struct iwl_mvm *mvm)
908 {
909 	struct iwl_async_handler_entry *entry, *tmp;
910 
911 	spin_lock_bh(&mvm->async_handlers_lock);
912 	list_for_each_entry_safe(entry, tmp, &mvm->async_handlers_list, list) {
913 		iwl_free_rxb(&entry->rxb);
914 		list_del(&entry->list);
915 		kfree(entry);
916 	}
917 	spin_unlock_bh(&mvm->async_handlers_lock);
918 }
919 
920 static void iwl_mvm_async_handlers_wk(struct work_struct *wk)
921 {
922 	struct iwl_mvm *mvm =
923 		container_of(wk, struct iwl_mvm, async_handlers_wk);
924 	struct iwl_async_handler_entry *entry, *tmp;
925 	LIST_HEAD(local_list);
926 
927 	/* Ensure that we are not in stop flow (check iwl_mvm_mac_stop) */
928 
929 	/*
930 	 * Sync with Rx path with a lock. Remove all the entries from this list,
931 	 * add them to a local one (lock free), and then handle them.
932 	 */
933 	spin_lock_bh(&mvm->async_handlers_lock);
934 	list_splice_init(&mvm->async_handlers_list, &local_list);
935 	spin_unlock_bh(&mvm->async_handlers_lock);
936 
937 	list_for_each_entry_safe(entry, tmp, &local_list, list) {
938 		if (entry->context == RX_HANDLER_ASYNC_LOCKED)
939 			mutex_lock(&mvm->mutex);
940 		entry->fn(mvm, &entry->rxb);
941 		iwl_free_rxb(&entry->rxb);
942 		list_del(&entry->list);
943 		if (entry->context == RX_HANDLER_ASYNC_LOCKED)
944 			mutex_unlock(&mvm->mutex);
945 		kfree(entry);
946 	}
947 }
948 
949 static inline void iwl_mvm_rx_check_trigger(struct iwl_mvm *mvm,
950 					    struct iwl_rx_packet *pkt)
951 {
952 	struct iwl_fw_dbg_trigger_tlv *trig;
953 	struct iwl_fw_dbg_trigger_cmd *cmds_trig;
954 	int i;
955 
956 	if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_FW_NOTIF))
957 		return;
958 
959 	trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_FW_NOTIF);
960 	cmds_trig = (void *)trig->data;
961 
962 	if (!iwl_fw_dbg_trigger_check_stop(&mvm->fwrt, NULL, trig))
963 		return;
964 
965 	for (i = 0; i < ARRAY_SIZE(cmds_trig->cmds); i++) {
966 		/* don't collect on CMD 0 */
967 		if (!cmds_trig->cmds[i].cmd_id)
968 			break;
969 
970 		if (cmds_trig->cmds[i].cmd_id != pkt->hdr.cmd ||
971 		    cmds_trig->cmds[i].group_id != pkt->hdr.group_id)
972 			continue;
973 
974 		iwl_fw_dbg_collect_trig(&mvm->fwrt, trig,
975 					"CMD 0x%02x.%02x received",
976 					pkt->hdr.group_id, pkt->hdr.cmd);
977 		break;
978 	}
979 }
980 
981 static void iwl_mvm_rx_common(struct iwl_mvm *mvm,
982 			      struct iwl_rx_cmd_buffer *rxb,
983 			      struct iwl_rx_packet *pkt)
984 {
985 	int i;
986 
987 	iwl_mvm_rx_check_trigger(mvm, pkt);
988 
989 	/*
990 	 * Do the notification wait before RX handlers so
991 	 * even if the RX handler consumes the RXB we have
992 	 * access to it in the notification wait entry.
993 	 */
994 	iwl_notification_wait_notify(&mvm->notif_wait, pkt);
995 
996 	for (i = 0; i < ARRAY_SIZE(iwl_mvm_rx_handlers); i++) {
997 		const struct iwl_rx_handlers *rx_h = &iwl_mvm_rx_handlers[i];
998 		struct iwl_async_handler_entry *entry;
999 
1000 		if (rx_h->cmd_id != WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd))
1001 			continue;
1002 
1003 		if (rx_h->context == RX_HANDLER_SYNC) {
1004 			rx_h->fn(mvm, rxb);
1005 			return;
1006 		}
1007 
1008 		entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
1009 		/* we can't do much... */
1010 		if (!entry)
1011 			return;
1012 
1013 		entry->rxb._page = rxb_steal_page(rxb);
1014 		entry->rxb._offset = rxb->_offset;
1015 		entry->rxb._rx_page_order = rxb->_rx_page_order;
1016 		entry->fn = rx_h->fn;
1017 		entry->context = rx_h->context;
1018 		spin_lock(&mvm->async_handlers_lock);
1019 		list_add_tail(&entry->list, &mvm->async_handlers_list);
1020 		spin_unlock(&mvm->async_handlers_lock);
1021 		schedule_work(&mvm->async_handlers_wk);
1022 		break;
1023 	}
1024 }
1025 
1026 static void iwl_mvm_rx(struct iwl_op_mode *op_mode,
1027 		       struct napi_struct *napi,
1028 		       struct iwl_rx_cmd_buffer *rxb)
1029 {
1030 	struct iwl_rx_packet *pkt = rxb_addr(rxb);
1031 	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1032 	u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd);
1033 
1034 	if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD)))
1035 		iwl_mvm_rx_rx_mpdu(mvm, napi, rxb);
1036 	else if (cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_PHY_CMD))
1037 		iwl_mvm_rx_rx_phy_cmd(mvm, rxb);
1038 	else
1039 		iwl_mvm_rx_common(mvm, rxb, pkt);
1040 }
1041 
1042 static void iwl_mvm_rx_mq(struct iwl_op_mode *op_mode,
1043 			  struct napi_struct *napi,
1044 			  struct iwl_rx_cmd_buffer *rxb)
1045 {
1046 	struct iwl_rx_packet *pkt = rxb_addr(rxb);
1047 	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1048 	u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd);
1049 
1050 	if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD)))
1051 		iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, 0);
1052 	else if (unlikely(cmd == WIDE_ID(DATA_PATH_GROUP,
1053 					 RX_QUEUES_NOTIFICATION)))
1054 		iwl_mvm_rx_queue_notif(mvm, rxb, 0);
1055 	else if (cmd == WIDE_ID(LEGACY_GROUP, FRAME_RELEASE))
1056 		iwl_mvm_rx_frame_release(mvm, napi, rxb, 0);
1057 	else
1058 		iwl_mvm_rx_common(mvm, rxb, pkt);
1059 }
1060 
1061 void iwl_mvm_stop_mac_queues(struct iwl_mvm *mvm, unsigned long mq)
1062 {
1063 	int q;
1064 
1065 	if (WARN_ON_ONCE(!mq))
1066 		return;
1067 
1068 	for_each_set_bit(q, &mq, IEEE80211_MAX_QUEUES) {
1069 		if (atomic_inc_return(&mvm->mac80211_queue_stop_count[q]) > 1) {
1070 			IWL_DEBUG_TX_QUEUES(mvm,
1071 					    "mac80211 %d already stopped\n", q);
1072 			continue;
1073 		}
1074 
1075 		ieee80211_stop_queue(mvm->hw, q);
1076 	}
1077 }
1078 
1079 static void iwl_mvm_async_cb(struct iwl_op_mode *op_mode,
1080 			     const struct iwl_device_cmd *cmd)
1081 {
1082 	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1083 
1084 	/*
1085 	 * For now, we only set the CMD_WANT_ASYNC_CALLBACK for ADD_STA
1086 	 * commands that need to block the Tx queues.
1087 	 */
1088 	iwl_trans_block_txq_ptrs(mvm->trans, false);
1089 }
1090 
1091 static void iwl_mvm_stop_sw_queue(struct iwl_op_mode *op_mode, int hw_queue)
1092 {
1093 	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1094 	unsigned long mq;
1095 
1096 	spin_lock_bh(&mvm->queue_info_lock);
1097 	mq = mvm->hw_queue_to_mac80211[hw_queue];
1098 	spin_unlock_bh(&mvm->queue_info_lock);
1099 
1100 	iwl_mvm_stop_mac_queues(mvm, mq);
1101 }
1102 
1103 void iwl_mvm_start_mac_queues(struct iwl_mvm *mvm, unsigned long mq)
1104 {
1105 	int q;
1106 
1107 	if (WARN_ON_ONCE(!mq))
1108 		return;
1109 
1110 	for_each_set_bit(q, &mq, IEEE80211_MAX_QUEUES) {
1111 		if (atomic_dec_return(&mvm->mac80211_queue_stop_count[q]) > 0) {
1112 			IWL_DEBUG_TX_QUEUES(mvm,
1113 					    "mac80211 %d still stopped\n", q);
1114 			continue;
1115 		}
1116 
1117 		ieee80211_wake_queue(mvm->hw, q);
1118 	}
1119 }
1120 
1121 static void iwl_mvm_wake_sw_queue(struct iwl_op_mode *op_mode, int hw_queue)
1122 {
1123 	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1124 	unsigned long mq;
1125 
1126 	spin_lock_bh(&mvm->queue_info_lock);
1127 	mq = mvm->hw_queue_to_mac80211[hw_queue];
1128 	spin_unlock_bh(&mvm->queue_info_lock);
1129 
1130 	iwl_mvm_start_mac_queues(mvm, mq);
1131 }
1132 
1133 static void iwl_mvm_set_rfkill_state(struct iwl_mvm *mvm)
1134 {
1135 	bool state = iwl_mvm_is_radio_killed(mvm);
1136 
1137 	if (state)
1138 		wake_up(&mvm->rx_sync_waitq);
1139 
1140 	wiphy_rfkill_set_hw_state(mvm->hw->wiphy, state);
1141 }
1142 
1143 void iwl_mvm_set_hw_ctkill_state(struct iwl_mvm *mvm, bool state)
1144 {
1145 	if (state)
1146 		set_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
1147 	else
1148 		clear_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
1149 
1150 	iwl_mvm_set_rfkill_state(mvm);
1151 }
1152 
1153 static bool iwl_mvm_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state)
1154 {
1155 	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1156 	bool calibrating = READ_ONCE(mvm->calibrating);
1157 
1158 	if (state)
1159 		set_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
1160 	else
1161 		clear_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
1162 
1163 	iwl_mvm_set_rfkill_state(mvm);
1164 
1165 	/* iwl_run_init_mvm_ucode is waiting for results, abort it */
1166 	if (calibrating)
1167 		iwl_abort_notification_waits(&mvm->notif_wait);
1168 
1169 	/*
1170 	 * Stop the device if we run OPERATIONAL firmware or if we are in the
1171 	 * middle of the calibrations.
1172 	 */
1173 	return state && (mvm->fwrt.cur_fw_img != IWL_UCODE_INIT || calibrating);
1174 }
1175 
1176 static void iwl_mvm_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb)
1177 {
1178 	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1179 	struct ieee80211_tx_info *info;
1180 
1181 	info = IEEE80211_SKB_CB(skb);
1182 	iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]);
1183 	ieee80211_free_txskb(mvm->hw, skb);
1184 }
1185 
1186 struct iwl_mvm_reprobe {
1187 	struct device *dev;
1188 	struct work_struct work;
1189 };
1190 
1191 static void iwl_mvm_reprobe_wk(struct work_struct *wk)
1192 {
1193 	struct iwl_mvm_reprobe *reprobe;
1194 
1195 	reprobe = container_of(wk, struct iwl_mvm_reprobe, work);
1196 	if (device_reprobe(reprobe->dev))
1197 		dev_err(reprobe->dev, "reprobe failed!\n");
1198 	kfree(reprobe);
1199 	module_put(THIS_MODULE);
1200 }
1201 
1202 void iwl_mvm_nic_restart(struct iwl_mvm *mvm, bool fw_error)
1203 {
1204 	iwl_abort_notification_waits(&mvm->notif_wait);
1205 
1206 	/*
1207 	 * This is a bit racy, but worst case we tell mac80211 about
1208 	 * a stopped/aborted scan when that was already done which
1209 	 * is not a problem. It is necessary to abort any os scan
1210 	 * here because mac80211 requires having the scan cleared
1211 	 * before restarting.
1212 	 * We'll reset the scan_status to NONE in restart cleanup in
1213 	 * the next start() call from mac80211. If restart isn't called
1214 	 * (no fw restart) scan status will stay busy.
1215 	 */
1216 	iwl_mvm_report_scan_aborted(mvm);
1217 
1218 	/*
1219 	 * If we're restarting already, don't cycle restarts.
1220 	 * If INIT fw asserted, it will likely fail again.
1221 	 * If WoWLAN fw asserted, don't restart either, mac80211
1222 	 * can't recover this since we're already half suspended.
1223 	 */
1224 	if (!mvm->fw_restart && fw_error) {
1225 		iwl_fw_dbg_collect_desc(&mvm->fwrt, &iwl_dump_desc_assert,
1226 					NULL);
1227 	} else if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1228 		struct iwl_mvm_reprobe *reprobe;
1229 
1230 		IWL_ERR(mvm,
1231 			"Firmware error during reconfiguration - reprobe!\n");
1232 
1233 		/*
1234 		 * get a module reference to avoid doing this while unloading
1235 		 * anyway and to avoid scheduling a work with code that's
1236 		 * being removed.
1237 		 */
1238 		if (!try_module_get(THIS_MODULE)) {
1239 			IWL_ERR(mvm, "Module is being unloaded - abort\n");
1240 			return;
1241 		}
1242 
1243 		reprobe = kzalloc(sizeof(*reprobe), GFP_ATOMIC);
1244 		if (!reprobe) {
1245 			module_put(THIS_MODULE);
1246 			return;
1247 		}
1248 		reprobe->dev = mvm->trans->dev;
1249 		INIT_WORK(&reprobe->work, iwl_mvm_reprobe_wk);
1250 		schedule_work(&reprobe->work);
1251 	} else if (mvm->fwrt.cur_fw_img == IWL_UCODE_REGULAR &&
1252 		   mvm->hw_registered &&
1253 		   !test_bit(STATUS_TRANS_DEAD, &mvm->trans->status)) {
1254 		/* don't let the transport/FW power down */
1255 		iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1256 
1257 		if (fw_error && mvm->fw_restart > 0)
1258 			mvm->fw_restart--;
1259 		set_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status);
1260 		ieee80211_restart_hw(mvm->hw);
1261 	}
1262 }
1263 
1264 static void iwl_mvm_nic_error(struct iwl_op_mode *op_mode)
1265 {
1266 	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1267 
1268 	if (!test_bit(STATUS_TRANS_DEAD, &mvm->trans->status))
1269 		iwl_mvm_dump_nic_error_log(mvm);
1270 
1271 	iwl_mvm_nic_restart(mvm, true);
1272 }
1273 
1274 static void iwl_mvm_cmd_queue_full(struct iwl_op_mode *op_mode)
1275 {
1276 	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1277 
1278 	WARN_ON(1);
1279 	iwl_mvm_nic_restart(mvm, true);
1280 }
1281 
1282 #ifdef CONFIG_PM
1283 struct iwl_d0i3_iter_data {
1284 	struct iwl_mvm *mvm;
1285 	struct ieee80211_vif *connected_vif;
1286 	u8 ap_sta_id;
1287 	u8 vif_count;
1288 	u8 offloading_tid;
1289 	bool disable_offloading;
1290 };
1291 
1292 static bool iwl_mvm_disallow_offloading(struct iwl_mvm *mvm,
1293 					struct ieee80211_vif *vif,
1294 					struct iwl_d0i3_iter_data *iter_data)
1295 {
1296 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1297 	struct iwl_mvm_sta *mvmsta;
1298 	u32 available_tids = 0;
1299 	u8 tid;
1300 
1301 	if (WARN_ON(vif->type != NL80211_IFTYPE_STATION ||
1302 		    mvmvif->ap_sta_id == IWL_MVM_INVALID_STA))
1303 		return false;
1304 
1305 	mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id);
1306 	if (!mvmsta)
1307 		return false;
1308 
1309 	spin_lock_bh(&mvmsta->lock);
1310 	for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1311 		struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
1312 
1313 		/*
1314 		 * in case of pending tx packets, don't use this tid
1315 		 * for offloading in order to prevent reuse of the same
1316 		 * qos seq counters.
1317 		 */
1318 		if (iwl_mvm_tid_queued(mvm, tid_data))
1319 			continue;
1320 
1321 		if (tid_data->state != IWL_AGG_OFF)
1322 			continue;
1323 
1324 		available_tids |= BIT(tid);
1325 	}
1326 	spin_unlock_bh(&mvmsta->lock);
1327 
1328 	/*
1329 	 * disallow protocol offloading if we have no available tid
1330 	 * (with no pending frames and no active aggregation,
1331 	 * as we don't handle "holes" properly - the scheduler needs the
1332 	 * frame's seq number and TFD index to match)
1333 	 */
1334 	if (!available_tids)
1335 		return true;
1336 
1337 	/* for simplicity, just use the first available tid */
1338 	iter_data->offloading_tid = ffs(available_tids) - 1;
1339 	return false;
1340 }
1341 
1342 static void iwl_mvm_enter_d0i3_iterator(void *_data, u8 *mac,
1343 					struct ieee80211_vif *vif)
1344 {
1345 	struct iwl_d0i3_iter_data *data = _data;
1346 	struct iwl_mvm *mvm = data->mvm;
1347 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1348 	u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE;
1349 
1350 	IWL_DEBUG_RPM(mvm, "entering D0i3 - vif %pM\n", vif->addr);
1351 	if (vif->type != NL80211_IFTYPE_STATION ||
1352 	    !vif->bss_conf.assoc)
1353 		return;
1354 
1355 	/*
1356 	 * in case of pending tx packets or active aggregations,
1357 	 * avoid offloading features in order to prevent reuse of
1358 	 * the same qos seq counters.
1359 	 */
1360 	if (iwl_mvm_disallow_offloading(mvm, vif, data))
1361 		data->disable_offloading = true;
1362 
1363 	iwl_mvm_update_d0i3_power_mode(mvm, vif, true, flags);
1364 	iwl_mvm_send_proto_offload(mvm, vif, data->disable_offloading,
1365 				   false, flags);
1366 
1367 	/*
1368 	 * on init/association, mvm already configures POWER_TABLE_CMD
1369 	 * and REPLY_MCAST_FILTER_CMD, so currently don't
1370 	 * reconfigure them (we might want to use different
1371 	 * params later on, though).
1372 	 */
1373 	data->ap_sta_id = mvmvif->ap_sta_id;
1374 	data->vif_count++;
1375 
1376 	/*
1377 	 * no new commands can be sent at this stage, so it's safe
1378 	 * to save the vif pointer during d0i3 entrance.
1379 	 */
1380 	data->connected_vif = vif;
1381 }
1382 
1383 static void iwl_mvm_set_wowlan_data(struct iwl_mvm *mvm,
1384 				    struct iwl_wowlan_config_cmd *cmd,
1385 				    struct iwl_d0i3_iter_data *iter_data)
1386 {
1387 	struct ieee80211_sta *ap_sta;
1388 	struct iwl_mvm_sta *mvm_ap_sta;
1389 
1390 	if (iter_data->ap_sta_id == IWL_MVM_INVALID_STA)
1391 		return;
1392 
1393 	rcu_read_lock();
1394 
1395 	ap_sta = rcu_dereference(mvm->fw_id_to_mac_id[iter_data->ap_sta_id]);
1396 	if (IS_ERR_OR_NULL(ap_sta))
1397 		goto out;
1398 
1399 	mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta);
1400 	cmd->is_11n_connection = ap_sta->ht_cap.ht_supported;
1401 	cmd->offloading_tid = iter_data->offloading_tid;
1402 	cmd->flags = ENABLE_L3_FILTERING | ENABLE_NBNS_FILTERING |
1403 		ENABLE_DHCP_FILTERING | ENABLE_STORE_BEACON;
1404 	/*
1405 	 * The d0i3 uCode takes care of the nonqos counters,
1406 	 * so configure only the qos seq ones.
1407 	 */
1408 	iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, cmd);
1409 out:
1410 	rcu_read_unlock();
1411 }
1412 
1413 int iwl_mvm_enter_d0i3(struct iwl_op_mode *op_mode)
1414 {
1415 	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1416 	u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE;
1417 	int ret;
1418 	struct iwl_d0i3_iter_data d0i3_iter_data = {
1419 		.mvm = mvm,
1420 	};
1421 	struct iwl_wowlan_config_cmd wowlan_config_cmd = {
1422 		.wakeup_filter = cpu_to_le32(IWL_WOWLAN_WAKEUP_RX_FRAME |
1423 					     IWL_WOWLAN_WAKEUP_BEACON_MISS |
1424 					     IWL_WOWLAN_WAKEUP_LINK_CHANGE),
1425 	};
1426 	struct iwl_d3_manager_config d3_cfg_cmd = {
1427 		.min_sleep_time = cpu_to_le32(1000),
1428 		.wakeup_flags = cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR),
1429 	};
1430 
1431 	IWL_DEBUG_RPM(mvm, "MVM entering D0i3\n");
1432 
1433 	if (WARN_ON_ONCE(mvm->fwrt.cur_fw_img != IWL_UCODE_REGULAR))
1434 		return -EINVAL;
1435 
1436 	set_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1437 
1438 	/*
1439 	 * iwl_mvm_ref_sync takes a reference before checking the flag.
1440 	 * so by checking there is no held reference we prevent a state
1441 	 * in which iwl_mvm_ref_sync continues successfully while we
1442 	 * configure the firmware to enter d0i3
1443 	 */
1444 	if (iwl_mvm_ref_taken(mvm)) {
1445 		IWL_DEBUG_RPM(mvm->trans, "abort d0i3 due to taken ref\n");
1446 		clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1447 		wake_up(&mvm->d0i3_exit_waitq);
1448 		return 1;
1449 	}
1450 
1451 	ieee80211_iterate_active_interfaces_atomic(mvm->hw,
1452 						   IEEE80211_IFACE_ITER_NORMAL,
1453 						   iwl_mvm_enter_d0i3_iterator,
1454 						   &d0i3_iter_data);
1455 	if (d0i3_iter_data.vif_count == 1) {
1456 		mvm->d0i3_ap_sta_id = d0i3_iter_data.ap_sta_id;
1457 		mvm->d0i3_offloading = !d0i3_iter_data.disable_offloading;
1458 	} else {
1459 		WARN_ON_ONCE(d0i3_iter_data.vif_count > 1);
1460 		mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA;
1461 		mvm->d0i3_offloading = false;
1462 	}
1463 
1464 	iwl_mvm_pause_tcm(mvm, true);
1465 	/* make sure we have no running tx while configuring the seqno */
1466 	synchronize_net();
1467 
1468 	/* Flush the hw queues, in case something got queued during entry */
1469 	/* TODO new tx api */
1470 	if (iwl_mvm_has_new_tx_api(mvm)) {
1471 		WARN_ONCE(1, "d0i3: Need to implement flush TX queue\n");
1472 	} else {
1473 		ret = iwl_mvm_flush_tx_path(mvm, iwl_mvm_flushable_queues(mvm),
1474 					    flags);
1475 		if (ret)
1476 			return ret;
1477 	}
1478 
1479 	/* configure wowlan configuration only if needed */
1480 	if (mvm->d0i3_ap_sta_id != IWL_MVM_INVALID_STA) {
1481 		/* wake on beacons only if beacon storing isn't supported */
1482 		if (!fw_has_capa(&mvm->fw->ucode_capa,
1483 				 IWL_UCODE_TLV_CAPA_BEACON_STORING))
1484 			wowlan_config_cmd.wakeup_filter |=
1485 				cpu_to_le32(IWL_WOWLAN_WAKEUP_BCN_FILTERING);
1486 
1487 		iwl_mvm_wowlan_config_key_params(mvm,
1488 						 d0i3_iter_data.connected_vif,
1489 						 true, flags);
1490 
1491 		iwl_mvm_set_wowlan_data(mvm, &wowlan_config_cmd,
1492 					&d0i3_iter_data);
1493 
1494 		ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, flags,
1495 					   sizeof(wowlan_config_cmd),
1496 					   &wowlan_config_cmd);
1497 		if (ret)
1498 			return ret;
1499 	}
1500 
1501 	return iwl_mvm_send_cmd_pdu(mvm, D3_CONFIG_CMD,
1502 				    flags | CMD_MAKE_TRANS_IDLE,
1503 				    sizeof(d3_cfg_cmd), &d3_cfg_cmd);
1504 }
1505 
1506 static void iwl_mvm_exit_d0i3_iterator(void *_data, u8 *mac,
1507 				       struct ieee80211_vif *vif)
1508 {
1509 	struct iwl_mvm *mvm = _data;
1510 	u32 flags = CMD_ASYNC | CMD_HIGH_PRIO;
1511 
1512 	IWL_DEBUG_RPM(mvm, "exiting D0i3 - vif %pM\n", vif->addr);
1513 	if (vif->type != NL80211_IFTYPE_STATION ||
1514 	    !vif->bss_conf.assoc)
1515 		return;
1516 
1517 	iwl_mvm_update_d0i3_power_mode(mvm, vif, false, flags);
1518 }
1519 
1520 struct iwl_mvm_d0i3_exit_work_iter_data {
1521 	struct iwl_mvm *mvm;
1522 	struct iwl_wowlan_status *status;
1523 	u32 wakeup_reasons;
1524 };
1525 
1526 static void iwl_mvm_d0i3_exit_work_iter(void *_data, u8 *mac,
1527 					struct ieee80211_vif *vif)
1528 {
1529 	struct iwl_mvm_d0i3_exit_work_iter_data *data = _data;
1530 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1531 	u32 reasons = data->wakeup_reasons;
1532 
1533 	/* consider only the relevant station interface */
1534 	if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc ||
1535 	    data->mvm->d0i3_ap_sta_id != mvmvif->ap_sta_id)
1536 		return;
1537 
1538 	if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH)
1539 		iwl_mvm_connection_loss(data->mvm, vif, "D0i3");
1540 	else if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON)
1541 		ieee80211_beacon_loss(vif);
1542 	else
1543 		iwl_mvm_d0i3_update_keys(data->mvm, vif, data->status);
1544 }
1545 
1546 void iwl_mvm_d0i3_enable_tx(struct iwl_mvm *mvm, __le16 *qos_seq)
1547 {
1548 	struct ieee80211_sta *sta = NULL;
1549 	struct iwl_mvm_sta *mvm_ap_sta;
1550 	int i;
1551 	bool wake_queues = false;
1552 
1553 	lockdep_assert_held(&mvm->mutex);
1554 
1555 	spin_lock_bh(&mvm->d0i3_tx_lock);
1556 
1557 	if (mvm->d0i3_ap_sta_id == IWL_MVM_INVALID_STA)
1558 		goto out;
1559 
1560 	IWL_DEBUG_RPM(mvm, "re-enqueue packets\n");
1561 
1562 	/* get the sta in order to update seq numbers and re-enqueue skbs */
1563 	sta = rcu_dereference_protected(
1564 			mvm->fw_id_to_mac_id[mvm->d0i3_ap_sta_id],
1565 			lockdep_is_held(&mvm->mutex));
1566 
1567 	if (IS_ERR_OR_NULL(sta)) {
1568 		sta = NULL;
1569 		goto out;
1570 	}
1571 
1572 	if (mvm->d0i3_offloading && qos_seq) {
1573 		/* update qos seq numbers if offloading was enabled */
1574 		mvm_ap_sta = iwl_mvm_sta_from_mac80211(sta);
1575 		for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
1576 			u16 seq = le16_to_cpu(qos_seq[i]);
1577 			/* firmware stores last-used one, we store next one */
1578 			seq += 0x10;
1579 			mvm_ap_sta->tid_data[i].seq_number = seq;
1580 		}
1581 	}
1582 out:
1583 	/* re-enqueue (or drop) all packets */
1584 	while (!skb_queue_empty(&mvm->d0i3_tx)) {
1585 		struct sk_buff *skb = __skb_dequeue(&mvm->d0i3_tx);
1586 
1587 		if (!sta || iwl_mvm_tx_skb(mvm, skb, sta))
1588 			ieee80211_free_txskb(mvm->hw, skb);
1589 
1590 		/* if the skb_queue is not empty, we need to wake queues */
1591 		wake_queues = true;
1592 	}
1593 	clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1594 	wake_up(&mvm->d0i3_exit_waitq);
1595 	mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA;
1596 	if (wake_queues)
1597 		ieee80211_wake_queues(mvm->hw);
1598 
1599 	spin_unlock_bh(&mvm->d0i3_tx_lock);
1600 }
1601 
1602 static void iwl_mvm_d0i3_exit_work(struct work_struct *wk)
1603 {
1604 	struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, d0i3_exit_work);
1605 	struct iwl_mvm_d0i3_exit_work_iter_data iter_data = {
1606 		.mvm = mvm,
1607 	};
1608 
1609 	struct iwl_wowlan_status *status;
1610 	u32 wakeup_reasons = 0;
1611 	__le16 *qos_seq = NULL;
1612 
1613 	mutex_lock(&mvm->mutex);
1614 
1615 	status = iwl_mvm_send_wowlan_get_status(mvm);
1616 	if (IS_ERR_OR_NULL(status)) {
1617 		/* set to NULL so we don't need to check before kfree'ing */
1618 		status = NULL;
1619 		goto out;
1620 	}
1621 
1622 	wakeup_reasons = le32_to_cpu(status->wakeup_reasons);
1623 	qos_seq = status->qos_seq_ctr;
1624 
1625 	IWL_DEBUG_RPM(mvm, "wakeup reasons: 0x%x\n", wakeup_reasons);
1626 
1627 	iter_data.wakeup_reasons = wakeup_reasons;
1628 	iter_data.status = status;
1629 	ieee80211_iterate_active_interfaces(mvm->hw,
1630 					    IEEE80211_IFACE_ITER_NORMAL,
1631 					    iwl_mvm_d0i3_exit_work_iter,
1632 					    &iter_data);
1633 out:
1634 	iwl_mvm_d0i3_enable_tx(mvm, qos_seq);
1635 
1636 	IWL_DEBUG_INFO(mvm, "d0i3 exit completed (wakeup reasons: 0x%x)\n",
1637 		       wakeup_reasons);
1638 
1639 	/* qos_seq might point inside resp_pkt, so free it only now */
1640 	kfree(status);
1641 
1642 	/* the FW might have updated the regdomain */
1643 	iwl_mvm_update_changed_regdom(mvm);
1644 
1645 	iwl_mvm_resume_tcm(mvm);
1646 	iwl_mvm_unref(mvm, IWL_MVM_REF_EXIT_WORK);
1647 	mutex_unlock(&mvm->mutex);
1648 }
1649 
1650 int _iwl_mvm_exit_d0i3(struct iwl_mvm *mvm)
1651 {
1652 	u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE |
1653 		    CMD_WAKE_UP_TRANS;
1654 	int ret;
1655 
1656 	IWL_DEBUG_RPM(mvm, "MVM exiting D0i3\n");
1657 
1658 	if (WARN_ON_ONCE(mvm->fwrt.cur_fw_img != IWL_UCODE_REGULAR))
1659 		return -EINVAL;
1660 
1661 	mutex_lock(&mvm->d0i3_suspend_mutex);
1662 	if (test_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags)) {
1663 		IWL_DEBUG_RPM(mvm, "Deferring d0i3 exit until resume\n");
1664 		__set_bit(D0I3_PENDING_WAKEUP, &mvm->d0i3_suspend_flags);
1665 		mutex_unlock(&mvm->d0i3_suspend_mutex);
1666 		return 0;
1667 	}
1668 	mutex_unlock(&mvm->d0i3_suspend_mutex);
1669 
1670 	ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, flags, 0, NULL);
1671 	if (ret)
1672 		goto out;
1673 
1674 	ieee80211_iterate_active_interfaces_atomic(mvm->hw,
1675 						   IEEE80211_IFACE_ITER_NORMAL,
1676 						   iwl_mvm_exit_d0i3_iterator,
1677 						   mvm);
1678 out:
1679 	schedule_work(&mvm->d0i3_exit_work);
1680 	return ret;
1681 }
1682 
1683 int iwl_mvm_exit_d0i3(struct iwl_op_mode *op_mode)
1684 {
1685 	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1686 
1687 	iwl_mvm_ref(mvm, IWL_MVM_REF_EXIT_WORK);
1688 	return _iwl_mvm_exit_d0i3(mvm);
1689 }
1690 
1691 #define IWL_MVM_D0I3_OPS					\
1692 	.enter_d0i3 = iwl_mvm_enter_d0i3,			\
1693 	.exit_d0i3 = iwl_mvm_exit_d0i3,
1694 #else /* CONFIG_PM */
1695 #define IWL_MVM_D0I3_OPS
1696 #endif /* CONFIG_PM */
1697 
1698 #define IWL_MVM_COMMON_OPS					\
1699 	/* these could be differentiated */			\
1700 	.async_cb = iwl_mvm_async_cb,				\
1701 	.queue_full = iwl_mvm_stop_sw_queue,			\
1702 	.queue_not_full = iwl_mvm_wake_sw_queue,		\
1703 	.hw_rf_kill = iwl_mvm_set_hw_rfkill_state,		\
1704 	.free_skb = iwl_mvm_free_skb,				\
1705 	.nic_error = iwl_mvm_nic_error,				\
1706 	.cmd_queue_full = iwl_mvm_cmd_queue_full,		\
1707 	.nic_config = iwl_mvm_nic_config,			\
1708 	IWL_MVM_D0I3_OPS					\
1709 	/* as we only register one, these MUST be common! */	\
1710 	.start = iwl_op_mode_mvm_start,				\
1711 	.stop = iwl_op_mode_mvm_stop
1712 
1713 static const struct iwl_op_mode_ops iwl_mvm_ops = {
1714 	IWL_MVM_COMMON_OPS,
1715 	.rx = iwl_mvm_rx,
1716 };
1717 
1718 static void iwl_mvm_rx_mq_rss(struct iwl_op_mode *op_mode,
1719 			      struct napi_struct *napi,
1720 			      struct iwl_rx_cmd_buffer *rxb,
1721 			      unsigned int queue)
1722 {
1723 	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1724 	struct iwl_rx_packet *pkt = rxb_addr(rxb);
1725 	u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd);
1726 
1727 	if (unlikely(cmd == WIDE_ID(LEGACY_GROUP, FRAME_RELEASE)))
1728 		iwl_mvm_rx_frame_release(mvm, napi, rxb, queue);
1729 	else if (unlikely(cmd == WIDE_ID(DATA_PATH_GROUP,
1730 					 RX_QUEUES_NOTIFICATION)))
1731 		iwl_mvm_rx_queue_notif(mvm, rxb, queue);
1732 	else if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD)))
1733 		iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, queue);
1734 }
1735 
1736 static const struct iwl_op_mode_ops iwl_mvm_ops_mq = {
1737 	IWL_MVM_COMMON_OPS,
1738 	.rx = iwl_mvm_rx_mq,
1739 	.rx_rss = iwl_mvm_rx_mq_rss,
1740 };
1741