1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
2 /*
3 * Copyright (C) 2024-2025 Intel Corporation
4 */
5 #include <linux/rtnetlink.h>
6 #include <net/mac80211.h>
7
8 #include "fw/api/rx.h"
9 #include "fw/api/datapath.h"
10 #include "fw/api/commands.h"
11 #include "fw/api/offload.h"
12 #include "fw/api/coex.h"
13 #include "fw/dbg.h"
14 #include "fw/uefi.h"
15
16 #include "mld.h"
17 #include "mlo.h"
18 #include "mac80211.h"
19 #include "led.h"
20 #include "scan.h"
21 #include "tx.h"
22 #include "sta.h"
23 #include "regulatory.h"
24 #include "thermal.h"
25 #include "low_latency.h"
26 #include "hcmd.h"
27 #include "fw/api/location.h"
28
29 #include "iwl-nvm-parse.h"
30
31 #define DRV_DESCRIPTION "Intel(R) MLD wireless driver for Linux"
32 MODULE_DESCRIPTION(DRV_DESCRIPTION);
33 MODULE_LICENSE("GPL");
34 MODULE_IMPORT_NS("IWLWIFI");
35
36 static const struct iwl_op_mode_ops iwl_mld_ops;
37
iwl_mld_init(void)38 static int __init iwl_mld_init(void)
39 {
40 int ret = iwl_opmode_register("iwlmld", &iwl_mld_ops);
41
42 if (ret)
43 pr_err("Unable to register MLD op_mode: %d\n", ret);
44
45 return ret;
46 }
47 module_init(iwl_mld_init);
48
iwl_mld_exit(void)49 static void __exit iwl_mld_exit(void)
50 {
51 iwl_opmode_deregister("iwlmld");
52 }
53 module_exit(iwl_mld_exit);
54
iwl_mld_hw_set_regulatory(struct iwl_mld * mld)55 static void iwl_mld_hw_set_regulatory(struct iwl_mld *mld)
56 {
57 struct wiphy *wiphy = mld->wiphy;
58
59 wiphy->regulatory_flags |= REGULATORY_WIPHY_SELF_MANAGED;
60 wiphy->regulatory_flags |= REGULATORY_ENABLE_RELAX_NO_IR;
61 }
62
63 VISIBLE_IF_IWLWIFI_KUNIT
iwl_construct_mld(struct iwl_mld * mld,struct iwl_trans * trans,const struct iwl_rf_cfg * cfg,const struct iwl_fw * fw,struct ieee80211_hw * hw,struct dentry * dbgfs_dir)64 void iwl_construct_mld(struct iwl_mld *mld, struct iwl_trans *trans,
65 const struct iwl_rf_cfg *cfg, const struct iwl_fw *fw,
66 struct ieee80211_hw *hw, struct dentry *dbgfs_dir)
67 {
68 mld->dev = trans->dev;
69 mld->trans = trans;
70 mld->cfg = cfg;
71 mld->fw = fw;
72 mld->hw = hw;
73 mld->wiphy = hw->wiphy;
74 mld->debugfs_dir = dbgfs_dir;
75
76 iwl_notification_wait_init(&mld->notif_wait);
77
78 /* Setup async RX handling */
79 spin_lock_init(&mld->async_handlers_lock);
80 INIT_LIST_HEAD(&mld->async_handlers_list);
81 wiphy_work_init(&mld->async_handlers_wk,
82 iwl_mld_async_handlers_wk);
83
84 /* Dynamic Queue Allocation */
85 spin_lock_init(&mld->add_txqs_lock);
86 INIT_LIST_HEAD(&mld->txqs_to_add);
87 wiphy_work_init(&mld->add_txqs_wk, iwl_mld_add_txqs_wk);
88
89 /* Setup RX queues sync wait queue */
90 init_waitqueue_head(&mld->rxq_sync.waitq);
91 }
92 EXPORT_SYMBOL_IF_IWLWIFI_KUNIT(iwl_construct_mld);
93
94 static void __acquires(&mld->wiphy->mtx)
iwl_mld_fwrt_dump_start(void * ctx)95 iwl_mld_fwrt_dump_start(void *ctx)
96 {
97 struct iwl_mld *mld = ctx;
98
99 wiphy_lock(mld->wiphy);
100 }
101
102 static void __releases(&mld->wiphy->mtx)
iwl_mld_fwrt_dump_end(void * ctx)103 iwl_mld_fwrt_dump_end(void *ctx)
104 {
105 struct iwl_mld *mld = ctx;
106
107 wiphy_unlock(mld->wiphy);
108 }
109
iwl_mld_d3_debug_enable(void * ctx)110 static bool iwl_mld_d3_debug_enable(void *ctx)
111 {
112 return IWL_MLD_D3_DEBUG;
113 }
114
iwl_mld_fwrt_send_hcmd(void * ctx,struct iwl_host_cmd * host_cmd)115 static int iwl_mld_fwrt_send_hcmd(void *ctx, struct iwl_host_cmd *host_cmd)
116 {
117 struct iwl_mld *mld = (struct iwl_mld *)ctx;
118 int ret;
119
120 wiphy_lock(mld->wiphy);
121 ret = iwl_mld_send_cmd(mld, host_cmd);
122 wiphy_unlock(mld->wiphy);
123
124 return ret;
125 }
126
127 static const struct iwl_fw_runtime_ops iwl_mld_fwrt_ops = {
128 .dump_start = iwl_mld_fwrt_dump_start,
129 .dump_end = iwl_mld_fwrt_dump_end,
130 .send_hcmd = iwl_mld_fwrt_send_hcmd,
131 .d3_debug_enable = iwl_mld_d3_debug_enable,
132 };
133
134 static void
iwl_mld_construct_fw_runtime(struct iwl_mld * mld,struct iwl_trans * trans,const struct iwl_fw * fw,struct dentry * debugfs_dir)135 iwl_mld_construct_fw_runtime(struct iwl_mld *mld, struct iwl_trans *trans,
136 const struct iwl_fw *fw,
137 struct dentry *debugfs_dir)
138 {
139 iwl_fw_runtime_init(&mld->fwrt, trans, fw, &iwl_mld_fwrt_ops, mld,
140 NULL, NULL, debugfs_dir);
141
142 iwl_fw_set_current_image(&mld->fwrt, IWL_UCODE_REGULAR);
143 }
144
145 /* Please keep this array *SORTED* by hex value.
146 * Access is done through binary search
147 */
148 static const struct iwl_hcmd_names iwl_mld_legacy_names[] = {
149 HCMD_NAME(UCODE_ALIVE_NTFY),
150 HCMD_NAME(INIT_COMPLETE_NOTIF),
151 HCMD_NAME(PHY_CONTEXT_CMD),
152 HCMD_NAME(SCAN_CFG_CMD),
153 HCMD_NAME(SCAN_REQ_UMAC),
154 HCMD_NAME(SCAN_ABORT_UMAC),
155 HCMD_NAME(SCAN_COMPLETE_UMAC),
156 HCMD_NAME(TX_CMD),
157 HCMD_NAME(TXPATH_FLUSH),
158 HCMD_NAME(LEDS_CMD),
159 HCMD_NAME(WNM_80211V_TIMING_MEASUREMENT_NOTIFICATION),
160 HCMD_NAME(WNM_80211V_TIMING_MEASUREMENT_CONFIRM_NOTIFICATION),
161 HCMD_NAME(SCAN_OFFLOAD_UPDATE_PROFILES_CMD),
162 HCMD_NAME(POWER_TABLE_CMD),
163 HCMD_NAME(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION),
164 HCMD_NAME(BEACON_NOTIFICATION),
165 HCMD_NAME(BEACON_TEMPLATE_CMD),
166 HCMD_NAME(TX_ANT_CONFIGURATION_CMD),
167 HCMD_NAME(REDUCE_TX_POWER_CMD),
168 HCMD_NAME(MISSED_BEACONS_NOTIFICATION),
169 HCMD_NAME(MAC_PM_POWER_TABLE),
170 HCMD_NAME(MFUART_LOAD_NOTIFICATION),
171 HCMD_NAME(RSS_CONFIG_CMD),
172 HCMD_NAME(SCAN_ITERATION_COMPLETE_UMAC),
173 HCMD_NAME(REPLY_RX_MPDU_CMD),
174 HCMD_NAME(BA_NOTIF),
175 HCMD_NAME(MCC_UPDATE_CMD),
176 HCMD_NAME(MCC_CHUB_UPDATE_CMD),
177 HCMD_NAME(MCAST_FILTER_CMD),
178 HCMD_NAME(REPLY_BEACON_FILTERING_CMD),
179 HCMD_NAME(PROT_OFFLOAD_CONFIG_CMD),
180 HCMD_NAME(MATCH_FOUND_NOTIFICATION),
181 HCMD_NAME(WOWLAN_PATTERNS),
182 HCMD_NAME(WOWLAN_CONFIGURATION),
183 HCMD_NAME(WOWLAN_TSC_RSC_PARAM),
184 HCMD_NAME(WOWLAN_KEK_KCK_MATERIAL),
185 HCMD_NAME(DEBUG_HOST_COMMAND),
186 HCMD_NAME(LDBG_CONFIG_CMD),
187 };
188
189 /* Please keep this array *SORTED* by hex value.
190 * Access is done through binary search
191 */
192 static const struct iwl_hcmd_names iwl_mld_system_names[] = {
193 HCMD_NAME(SHARED_MEM_CFG_CMD),
194 HCMD_NAME(SOC_CONFIGURATION_CMD),
195 HCMD_NAME(INIT_EXTENDED_CFG_CMD),
196 HCMD_NAME(FW_ERROR_RECOVERY_CMD),
197 HCMD_NAME(RFI_CONFIG_CMD),
198 HCMD_NAME(RFI_GET_FREQ_TABLE_CMD),
199 HCMD_NAME(SYSTEM_STATISTICS_CMD),
200 HCMD_NAME(SYSTEM_STATISTICS_END_NOTIF),
201 };
202
203 /* Please keep this array *SORTED* by hex value.
204 * Access is done through binary search
205 */
206 static const struct iwl_hcmd_names iwl_mld_reg_and_nvm_names[] = {
207 HCMD_NAME(LARI_CONFIG_CHANGE),
208 HCMD_NAME(NVM_GET_INFO),
209 HCMD_NAME(TAS_CONFIG),
210 HCMD_NAME(SAR_OFFSET_MAPPING_TABLE_CMD),
211 HCMD_NAME(MCC_ALLOWED_AP_TYPE_CMD),
212 };
213
214 /* Please keep this array *SORTED* by hex value.
215 * Access is done through binary search
216 */
217 static const struct iwl_hcmd_names iwl_mld_debug_names[] = {
218 HCMD_NAME(HOST_EVENT_CFG),
219 HCMD_NAME(DBGC_SUSPEND_RESUME),
220 };
221
222 /* Please keep this array *SORTED* by hex value.
223 * Access is done through binary search
224 */
225 static const struct iwl_hcmd_names iwl_mld_mac_conf_names[] = {
226 HCMD_NAME(LOW_LATENCY_CMD),
227 HCMD_NAME(SESSION_PROTECTION_CMD),
228 HCMD_NAME(MAC_CONFIG_CMD),
229 HCMD_NAME(LINK_CONFIG_CMD),
230 HCMD_NAME(STA_CONFIG_CMD),
231 HCMD_NAME(AUX_STA_CMD),
232 HCMD_NAME(STA_REMOVE_CMD),
233 HCMD_NAME(ROC_CMD),
234 HCMD_NAME(MISSED_BEACONS_NOTIF),
235 HCMD_NAME(EMLSR_TRANS_FAIL_NOTIF),
236 HCMD_NAME(ROC_NOTIF),
237 HCMD_NAME(CHANNEL_SWITCH_ERROR_NOTIF),
238 HCMD_NAME(SESSION_PROTECTION_NOTIF),
239 HCMD_NAME(PROBE_RESPONSE_DATA_NOTIF),
240 HCMD_NAME(CHANNEL_SWITCH_START_NOTIF),
241 };
242
243 /* Please keep this array *SORTED* by hex value.
244 * Access is done through binary search
245 */
246 static const struct iwl_hcmd_names iwl_mld_data_path_names[] = {
247 HCMD_NAME(TRIGGER_RX_QUEUES_NOTIF_CMD),
248 HCMD_NAME(WNM_PLATFORM_PTM_REQUEST_CMD),
249 HCMD_NAME(WNM_80211V_TIMING_MEASUREMENT_CONFIG_CMD),
250 HCMD_NAME(RFH_QUEUE_CONFIG_CMD),
251 HCMD_NAME(TLC_MNG_CONFIG_CMD),
252 HCMD_NAME(RX_BAID_ALLOCATION_CONFIG_CMD),
253 HCMD_NAME(SCD_QUEUE_CONFIG_CMD),
254 HCMD_NAME(ESR_MODE_NOTIF),
255 HCMD_NAME(MONITOR_NOTIF),
256 HCMD_NAME(TLC_MNG_UPDATE_NOTIF),
257 HCMD_NAME(BEACON_FILTER_IN_NOTIF),
258 HCMD_NAME(MU_GROUP_MGMT_NOTIF),
259 };
260
261 /* Please keep this array *SORTED* by hex value.
262 * Access is done through binary search
263 */
264 static const struct iwl_hcmd_names iwl_mld_scan_names[] = {
265 HCMD_NAME(CHANNEL_SURVEY_NOTIF),
266 };
267
268 /* Please keep this array *SORTED* by hex value.
269 * Access is done through binary search
270 */
271 static const struct iwl_hcmd_names iwl_mld_location_names[] = {
272 HCMD_NAME(TOF_RANGE_REQ_CMD),
273 HCMD_NAME(TOF_RANGE_RESPONSE_NOTIF),
274 };
275
276 /* Please keep this array *SORTED* by hex value.
277 * Access is done through binary search
278 */
279 static const struct iwl_hcmd_names iwl_mld_phy_names[] = {
280 HCMD_NAME(CMD_DTS_MEASUREMENT_TRIGGER_WIDE),
281 HCMD_NAME(CTDP_CONFIG_CMD),
282 HCMD_NAME(TEMP_REPORTING_THRESHOLDS_CMD),
283 HCMD_NAME(PER_CHAIN_LIMIT_OFFSET_CMD),
284 HCMD_NAME(CT_KILL_NOTIFICATION),
285 HCMD_NAME(DTS_MEASUREMENT_NOTIF_WIDE),
286 };
287
288 /* Please keep this array *SORTED* by hex value.
289 * Access is done through binary search
290 */
291 static const struct iwl_hcmd_names iwl_mld_statistics_names[] = {
292 HCMD_NAME(STATISTICS_OPER_NOTIF),
293 HCMD_NAME(STATISTICS_OPER_PART1_NOTIF),
294 };
295
296 /* Please keep this array *SORTED* by hex value.
297 * Access is done through binary search
298 */
299 static const struct iwl_hcmd_names iwl_mld_prot_offload_names[] = {
300 HCMD_NAME(WOWLAN_WAKE_PKT_NOTIFICATION),
301 HCMD_NAME(WOWLAN_INFO_NOTIFICATION),
302 HCMD_NAME(D3_END_NOTIFICATION),
303 };
304
305 /* Please keep this array *SORTED* by hex value.
306 * Access is done through binary search
307 */
308 static const struct iwl_hcmd_names iwl_mld_coex_names[] = {
309 HCMD_NAME(PROFILE_NOTIF),
310 };
311
312 VISIBLE_IF_IWLWIFI_KUNIT
313 const struct iwl_hcmd_arr iwl_mld_groups[] = {
314 [LEGACY_GROUP] = HCMD_ARR(iwl_mld_legacy_names),
315 [LONG_GROUP] = HCMD_ARR(iwl_mld_legacy_names),
316 [SYSTEM_GROUP] = HCMD_ARR(iwl_mld_system_names),
317 [MAC_CONF_GROUP] = HCMD_ARR(iwl_mld_mac_conf_names),
318 [DATA_PATH_GROUP] = HCMD_ARR(iwl_mld_data_path_names),
319 [SCAN_GROUP] = HCMD_ARR(iwl_mld_scan_names),
320 [LOCATION_GROUP] = HCMD_ARR(iwl_mld_location_names),
321 [REGULATORY_AND_NVM_GROUP] = HCMD_ARR(iwl_mld_reg_and_nvm_names),
322 [DEBUG_GROUP] = HCMD_ARR(iwl_mld_debug_names),
323 [PHY_OPS_GROUP] = HCMD_ARR(iwl_mld_phy_names),
324 [STATISTICS_GROUP] = HCMD_ARR(iwl_mld_statistics_names),
325 [PROT_OFFLOAD_GROUP] = HCMD_ARR(iwl_mld_prot_offload_names),
326 [BT_COEX_GROUP] = HCMD_ARR(iwl_mld_coex_names),
327 };
328 EXPORT_SYMBOL_IF_IWLWIFI_KUNIT(iwl_mld_groups);
329
330 #if IS_ENABLED(CONFIG_IWLWIFI_KUNIT_TESTS)
331 const unsigned int global_iwl_mld_goups_size = ARRAY_SIZE(iwl_mld_groups);
332 EXPORT_SYMBOL_IF_IWLWIFI_KUNIT(global_iwl_mld_goups_size);
333 #endif
334
335 static void
iwl_mld_configure_trans(struct iwl_op_mode * op_mode)336 iwl_mld_configure_trans(struct iwl_op_mode *op_mode)
337 {
338 struct iwl_mld *mld = IWL_OP_MODE_GET_MLD(op_mode);
339 static const u8 no_reclaim_cmds[] = {TX_CMD};
340 struct iwl_trans *trans = mld->trans;
341 u32 eckv_value;
342
343 iwl_bios_setup_step(trans, &mld->fwrt);
344 iwl_uefi_get_step_table(trans);
345
346 if (iwl_bios_get_eckv(&mld->fwrt, &eckv_value))
347 IWL_DEBUG_RADIO(mld, "ECKV table doesn't exist in BIOS\n");
348 else
349 trans->conf.ext_32khz_clock_valid = !!eckv_value;
350
351 trans->conf.rx_buf_size = iwl_amsdu_size_to_rxb_size();
352 trans->conf.command_groups = iwl_mld_groups;
353 trans->conf.command_groups_size = ARRAY_SIZE(iwl_mld_groups);
354 trans->conf.fw_reset_handshake = true;
355 trans->conf.queue_alloc_cmd_ver =
356 iwl_fw_lookup_cmd_ver(mld->fw, WIDE_ID(DATA_PATH_GROUP,
357 SCD_QUEUE_CONFIG_CMD),
358 0);
359 trans->conf.cb_data_offs = offsetof(struct ieee80211_tx_info,
360 driver_data[2]);
361 BUILD_BUG_ON(sizeof(no_reclaim_cmds) >
362 sizeof(trans->conf.no_reclaim_cmds));
363 memcpy(trans->conf.no_reclaim_cmds, no_reclaim_cmds,
364 sizeof(no_reclaim_cmds));
365 trans->conf.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds);
366
367 trans->conf.rx_mpdu_cmd = REPLY_RX_MPDU_CMD;
368 trans->conf.rx_mpdu_cmd_hdr_size = sizeof(struct iwl_rx_mpdu_desc);
369 trans->conf.wide_cmd_header = true;
370
371 iwl_trans_op_mode_enter(trans, op_mode);
372 }
373
374 /*
375 *****************************************************
376 * op mode ops functions
377 *****************************************************
378 */
379
380 #define NUM_FW_LOAD_RETRIES 3
381 static struct iwl_op_mode *
iwl_op_mode_mld_start(struct iwl_trans * trans,const struct iwl_rf_cfg * cfg,const struct iwl_fw * fw,struct dentry * dbgfs_dir)382 iwl_op_mode_mld_start(struct iwl_trans *trans, const struct iwl_rf_cfg *cfg,
383 const struct iwl_fw *fw, struct dentry *dbgfs_dir)
384 {
385 struct ieee80211_hw *hw;
386 struct iwl_op_mode *op_mode;
387 struct iwl_mld *mld;
388 int ret;
389
390 /* Allocate and initialize a new hardware device */
391 hw = ieee80211_alloc_hw(sizeof(struct iwl_op_mode) +
392 sizeof(struct iwl_mld),
393 &iwl_mld_hw_ops);
394 if (!hw)
395 return ERR_PTR(-ENOMEM);
396
397 op_mode = hw->priv;
398
399 op_mode->ops = &iwl_mld_ops;
400
401 mld = IWL_OP_MODE_GET_MLD(op_mode);
402
403 iwl_construct_mld(mld, trans, cfg, fw, hw, dbgfs_dir);
404
405 /* we'll verify later it matches between commands */
406 mld->fw_rates_ver_3 = iwl_fw_lookup_cmd_ver(mld->fw, TX_CMD, 0) >= 11;
407
408 iwl_mld_construct_fw_runtime(mld, trans, fw, dbgfs_dir);
409
410 iwl_mld_get_bios_tables(mld);
411 iwl_uefi_get_sgom_table(trans, &mld->fwrt);
412 mld->bios_enable_puncturing = iwl_uefi_get_puncturing(&mld->fwrt);
413
414 iwl_mld_hw_set_regulatory(mld);
415
416 /* Configure transport layer with the opmode specific params */
417 iwl_mld_configure_trans(op_mode);
418
419 /* needed for regulatory init */
420 rtnl_lock();
421 /* Needed for sending commands */
422 wiphy_lock(mld->wiphy);
423
424 for (int i = 0; i < NUM_FW_LOAD_RETRIES; i++) {
425 ret = iwl_mld_load_fw(mld);
426 if (!ret)
427 break;
428 }
429
430 if (!ret) {
431 mld->nvm_data = iwl_get_nvm(mld->trans, mld->fw, 0, 0);
432 if (IS_ERR(mld->nvm_data)) {
433 IWL_ERR(mld, "Failed to read NVM: %d\n", ret);
434 ret = PTR_ERR(mld->nvm_data);
435 }
436 }
437
438 if (ret) {
439 wiphy_unlock(mld->wiphy);
440 rtnl_unlock();
441 goto err;
442 }
443
444 /* We are about to stop the FW. Notifications may require an
445 * operational FW, so handle them all here before we stop.
446 */
447 wiphy_work_flush(mld->wiphy, &mld->async_handlers_wk);
448
449 iwl_mld_stop_fw(mld);
450
451 wiphy_unlock(mld->wiphy);
452 rtnl_unlock();
453
454 ret = iwl_mld_leds_init(mld);
455 if (ret)
456 goto free_nvm;
457
458 ret = iwl_mld_alloc_scan_cmd(mld);
459 if (ret)
460 goto leds_exit;
461
462 ret = iwl_mld_low_latency_init(mld);
463 if (ret)
464 goto free_scan_cmd;
465
466 ret = iwl_mld_register_hw(mld);
467 if (ret)
468 goto low_latency_free;
469
470 iwl_mld_toggle_tx_ant(mld, &mld->mgmt_tx_ant);
471
472 iwl_mld_add_debugfs_files(mld, dbgfs_dir);
473 iwl_mld_thermal_initialize(mld);
474
475 iwl_mld_ptp_init(mld);
476
477 return op_mode;
478
479 low_latency_free:
480 iwl_mld_low_latency_free(mld);
481 free_scan_cmd:
482 kfree(mld->scan.cmd);
483 leds_exit:
484 iwl_mld_leds_exit(mld);
485 free_nvm:
486 kfree(mld->nvm_data);
487 err:
488 iwl_trans_op_mode_leave(mld->trans);
489 ieee80211_free_hw(mld->hw);
490 return ERR_PTR(ret);
491 }
492
493 static void
iwl_op_mode_mld_stop(struct iwl_op_mode * op_mode)494 iwl_op_mode_mld_stop(struct iwl_op_mode *op_mode)
495 {
496 struct iwl_mld *mld = IWL_OP_MODE_GET_MLD(op_mode);
497
498 iwl_mld_ptp_remove(mld);
499 iwl_mld_leds_exit(mld);
500
501 iwl_mld_thermal_exit(mld);
502
503 wiphy_lock(mld->wiphy);
504 iwl_mld_low_latency_stop(mld);
505 iwl_mld_deinit_time_sync(mld);
506 wiphy_unlock(mld->wiphy);
507
508 ieee80211_unregister_hw(mld->hw);
509
510 iwl_fw_runtime_free(&mld->fwrt);
511 iwl_mld_low_latency_free(mld);
512
513 iwl_trans_op_mode_leave(mld->trans);
514
515 kfree(mld->nvm_data);
516 kfree(mld->scan.cmd);
517 kfree(mld->channel_survey);
518 kfree(mld->error_recovery_buf);
519 kfree(mld->mcast_filter_cmd);
520
521 ieee80211_free_hw(mld->hw);
522 }
523
iwl_mld_queue_state_change(struct iwl_op_mode * op_mode,int hw_queue,bool queue_full)524 static void iwl_mld_queue_state_change(struct iwl_op_mode *op_mode,
525 int hw_queue, bool queue_full)
526 {
527 struct iwl_mld *mld = IWL_OP_MODE_GET_MLD(op_mode);
528 struct ieee80211_txq *txq;
529 struct iwl_mld_sta *mld_sta;
530 struct iwl_mld_txq *mld_txq;
531
532 rcu_read_lock();
533
534 txq = rcu_dereference(mld->fw_id_to_txq[hw_queue]);
535 if (!txq) {
536 rcu_read_unlock();
537
538 if (queue_full) {
539 /* An internal queue is not expected to become full */
540 IWL_WARN(mld,
541 "Internal hw_queue %d is full! stopping all queues\n",
542 hw_queue);
543 /* Stop all queues, as an internal queue is not
544 * mapped to a mac80211 one
545 */
546 ieee80211_stop_queues(mld->hw);
547 } else {
548 ieee80211_wake_queues(mld->hw);
549 }
550
551 return;
552 }
553
554 mld_txq = iwl_mld_txq_from_mac80211(txq);
555 mld_sta = txq->sta ? iwl_mld_sta_from_mac80211(txq->sta) : NULL;
556
557 mld_txq->status.stop_full = queue_full;
558
559 if (!queue_full && mld_sta &&
560 mld_sta->sta_state != IEEE80211_STA_NOTEXIST) {
561 local_bh_disable();
562 iwl_mld_tx_from_txq(mld, txq);
563 local_bh_enable();
564 }
565
566 rcu_read_unlock();
567 }
568
569 static void
iwl_mld_queue_full(struct iwl_op_mode * op_mode,int hw_queue)570 iwl_mld_queue_full(struct iwl_op_mode *op_mode, int hw_queue)
571 {
572 iwl_mld_queue_state_change(op_mode, hw_queue, true);
573 }
574
575 static void
iwl_mld_queue_not_full(struct iwl_op_mode * op_mode,int hw_queue)576 iwl_mld_queue_not_full(struct iwl_op_mode *op_mode, int hw_queue)
577 {
578 iwl_mld_queue_state_change(op_mode, hw_queue, false);
579 }
580
581 static bool
iwl_mld_set_hw_rfkill_state(struct iwl_op_mode * op_mode,bool state)582 iwl_mld_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state)
583 {
584 struct iwl_mld *mld = IWL_OP_MODE_GET_MLD(op_mode);
585
586 iwl_mld_set_hwkill(mld, state);
587
588 return false;
589 }
590
591 static void
iwl_mld_free_skb(struct iwl_op_mode * op_mode,struct sk_buff * skb)592 iwl_mld_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb)
593 {
594 struct iwl_mld *mld = IWL_OP_MODE_GET_MLD(op_mode);
595 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
596
597 iwl_trans_free_tx_cmd(mld->trans, info->driver_data[1]);
598 ieee80211_free_txskb(mld->hw, skb);
599 }
600
iwl_mld_read_error_recovery_buffer(struct iwl_mld * mld)601 static void iwl_mld_read_error_recovery_buffer(struct iwl_mld *mld)
602 {
603 u32 src_size = mld->fw->ucode_capa.error_log_size;
604 u32 src_addr = mld->fw->ucode_capa.error_log_addr;
605 u8 *recovery_buf;
606 int ret;
607
608 /* no recovery buffer size defined in a TLV */
609 if (!src_size)
610 return;
611
612 recovery_buf = kzalloc(src_size, GFP_ATOMIC);
613 if (!recovery_buf)
614 return;
615
616 ret = iwl_trans_read_mem_bytes(mld->trans, src_addr,
617 recovery_buf, src_size);
618 if (ret) {
619 IWL_ERR(mld, "Failed to read error recovery buffer (%d)\n",
620 ret);
621 kfree(recovery_buf);
622 return;
623 }
624
625 mld->error_recovery_buf = recovery_buf;
626 }
627
iwl_mld_restart_nic(struct iwl_mld * mld)628 static void iwl_mld_restart_nic(struct iwl_mld *mld)
629 {
630 iwl_mld_read_error_recovery_buffer(mld);
631
632 mld->fwrt.trans->dbg.restart_required = false;
633
634 ieee80211_restart_hw(mld->hw);
635 }
636
637 static void
iwl_mld_nic_error(struct iwl_op_mode * op_mode,enum iwl_fw_error_type type)638 iwl_mld_nic_error(struct iwl_op_mode *op_mode,
639 enum iwl_fw_error_type type)
640 {
641 struct iwl_mld *mld = IWL_OP_MODE_GET_MLD(op_mode);
642 bool trans_dead = iwl_trans_is_dead(mld->trans);
643
644 if (type == IWL_ERR_TYPE_CMD_QUEUE_FULL)
645 IWL_ERR(mld, "Command queue full!\n");
646 else if (!trans_dead && !mld->fw_status.do_not_dump_once)
647 iwl_fwrt_dump_error_logs(&mld->fwrt);
648
649 mld->fw_status.do_not_dump_once = false;
650
651 /* It is necessary to abort any os scan here because mac80211 requires
652 * having the scan cleared before restarting.
653 * We'll reset the scan_status to NONE in restart cleanup in
654 * the next drv_start() call from mac80211. If ieee80211_hw_restart
655 * isn't called scan status will stay busy.
656 */
657 iwl_mld_report_scan_aborted(mld);
658
659 /*
660 * This should be first thing before trying to collect any
661 * data to avoid endless loops if any HW error happens while
662 * collecting debug data.
663 * It might not actually be true that we'll restart, but the
664 * setting doesn't matter if we're going to be unbound either.
665 */
666 if (type != IWL_ERR_TYPE_RESET_HS_TIMEOUT &&
667 mld->fw_status.running)
668 mld->fw_status.in_hw_restart = true;
669 }
670
iwl_mld_dump_error(struct iwl_op_mode * op_mode,struct iwl_fw_error_dump_mode * mode)671 static void iwl_mld_dump_error(struct iwl_op_mode *op_mode,
672 struct iwl_fw_error_dump_mode *mode)
673 {
674 struct iwl_mld *mld = IWL_OP_MODE_GET_MLD(op_mode);
675
676 /* if we come in from opmode we have the mutex held */
677 if (mode->context == IWL_ERR_CONTEXT_FROM_OPMODE) {
678 lockdep_assert_wiphy(mld->wiphy);
679 iwl_fw_error_collect(&mld->fwrt);
680 } else {
681 wiphy_lock(mld->wiphy);
682 if (mode->context != IWL_ERR_CONTEXT_ABORT)
683 iwl_fw_error_collect(&mld->fwrt);
684 wiphy_unlock(mld->wiphy);
685 }
686 }
687
iwl_mld_sw_reset(struct iwl_op_mode * op_mode,enum iwl_fw_error_type type)688 static bool iwl_mld_sw_reset(struct iwl_op_mode *op_mode,
689 enum iwl_fw_error_type type)
690 {
691 struct iwl_mld *mld = IWL_OP_MODE_GET_MLD(op_mode);
692
693 /* SW reset can happen for TOP error w/o NIC error, so
694 * also abort scan here and set in_hw_restart, when we
695 * had a NIC error both were already done.
696 */
697 iwl_mld_report_scan_aborted(mld);
698 mld->fw_status.in_hw_restart = true;
699
700 /* Do restart only in the following conditions are met:
701 * - we consider the FW as running
702 * - The trigger that brought us here is defined as one that requires
703 * a restart (in the debug TLVs)
704 */
705 if (!mld->fw_status.running || !mld->fwrt.trans->dbg.restart_required)
706 return false;
707
708 iwl_mld_restart_nic(mld);
709 return true;
710 }
711
712 static void
iwl_mld_time_point(struct iwl_op_mode * op_mode,enum iwl_fw_ini_time_point tp_id,union iwl_dbg_tlv_tp_data * tp_data)713 iwl_mld_time_point(struct iwl_op_mode *op_mode,
714 enum iwl_fw_ini_time_point tp_id,
715 union iwl_dbg_tlv_tp_data *tp_data)
716 {
717 struct iwl_mld *mld = IWL_OP_MODE_GET_MLD(op_mode);
718
719 iwl_dbg_tlv_time_point(&mld->fwrt, tp_id, tp_data);
720 }
721
722 #ifdef CONFIG_PM_SLEEP
iwl_mld_device_powered_off(struct iwl_op_mode * op_mode)723 static void iwl_mld_device_powered_off(struct iwl_op_mode *op_mode)
724 {
725 struct iwl_mld *mld = IWL_OP_MODE_GET_MLD(op_mode);
726
727 wiphy_lock(mld->wiphy);
728 iwl_mld_stop_fw(mld);
729 mld->fw_status.in_d3 = false;
730 wiphy_unlock(mld->wiphy);
731 }
732 #else
iwl_mld_device_powered_off(struct iwl_op_mode * op_mode)733 static void iwl_mld_device_powered_off(struct iwl_op_mode *op_mode)
734 {}
735 #endif
736
iwl_mld_dump(struct iwl_op_mode * op_mode)737 static void iwl_mld_dump(struct iwl_op_mode *op_mode)
738 {
739 struct iwl_mld *mld = IWL_OP_MODE_GET_MLD(op_mode);
740 struct iwl_fw_runtime *fwrt = &mld->fwrt;
741
742 if (!iwl_trans_fw_running(fwrt->trans))
743 return;
744
745 iwl_dbg_tlv_time_point(fwrt, IWL_FW_INI_TIME_POINT_USER_TRIGGER, NULL);
746 }
747
748 static const struct iwl_op_mode_ops iwl_mld_ops = {
749 .start = iwl_op_mode_mld_start,
750 .stop = iwl_op_mode_mld_stop,
751 .rx = iwl_mld_rx,
752 .rx_rss = iwl_mld_rx_rss,
753 .queue_full = iwl_mld_queue_full,
754 .queue_not_full = iwl_mld_queue_not_full,
755 .hw_rf_kill = iwl_mld_set_hw_rfkill_state,
756 .free_skb = iwl_mld_free_skb,
757 .nic_error = iwl_mld_nic_error,
758 .dump_error = iwl_mld_dump_error,
759 .sw_reset = iwl_mld_sw_reset,
760 .time_point = iwl_mld_time_point,
761 .device_powered_off = pm_sleep_ptr(iwl_mld_device_powered_off),
762 .dump = iwl_mld_dump,
763 };
764
765 struct iwl_mld_mod_params iwlmld_mod_params = {
766 .power_scheme = IWL_POWER_SCHEME_BPS,
767 };
768
769 module_param_named(power_scheme, iwlmld_mod_params.power_scheme, int, 0444);
770 MODULE_PARM_DESC(power_scheme,
771 "power management scheme: 1-active, 2-balanced, default: 2");
772