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63#include <linux/module.h>
64#include <linux/vmalloc.h>
65#include <net/mac80211.h>
66
67#include "iwl-notif-wait.h"
68#include "iwl-trans.h"
69#include "iwl-op-mode.h"
70#include "iwl-fw.h"
71#include "iwl-debug.h"
72#include "iwl-drv.h"
73#include "iwl-modparams.h"
74#include "mvm.h"
75#include "iwl-phy-db.h"
76#include "iwl-eeprom-parse.h"
77#include "iwl-csr.h"
78#include "iwl-io.h"
79#include "iwl-prph.h"
80#include "rs.h"
81#include "fw-api-scan.h"
82#include "fw-error-dump.h"
83#include "time-event.h"
84
85
86
87
88#define DRV_DESCRIPTION "The new Intel(R) wireless AGN driver for Linux"
89
90#define DRV_VERSION IWLWIFI_VERSION
91
92MODULE_DESCRIPTION(DRV_DESCRIPTION);
93MODULE_VERSION(DRV_VERSION);
94MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
95MODULE_LICENSE("GPL");
96
97static const struct iwl_op_mode_ops iwl_mvm_ops;
98
99struct iwl_mvm_mod_params iwlmvm_mod_params = {
100 .power_scheme = IWL_POWER_SCHEME_BPS,
101
102};
103
104module_param_named(init_dbg, iwlmvm_mod_params.init_dbg, bool, S_IRUGO);
105MODULE_PARM_DESC(init_dbg,
106 "set to true to debug an ASSERT in INIT fw (default: false");
107module_param_named(power_scheme, iwlmvm_mod_params.power_scheme, int, S_IRUGO);
108MODULE_PARM_DESC(power_scheme,
109 "power management scheme: 1-active, 2-balanced, 3-low power, default: 2");
110
111
112
113
114static int __init iwl_mvm_init(void)
115{
116 int ret;
117
118 ret = iwl_mvm_rate_control_register();
119 if (ret) {
120 pr_err("Unable to register rate control algorithm: %d\n", ret);
121 return ret;
122 }
123
124 ret = iwl_opmode_register("iwlmvm", &iwl_mvm_ops);
125
126 if (ret) {
127 pr_err("Unable to register MVM op_mode: %d\n", ret);
128 iwl_mvm_rate_control_unregister();
129 }
130
131 return ret;
132}
133module_init(iwl_mvm_init);
134
135static void __exit iwl_mvm_exit(void)
136{
137 iwl_opmode_deregister("iwlmvm");
138 iwl_mvm_rate_control_unregister();
139}
140module_exit(iwl_mvm_exit);
141
142static void iwl_mvm_nic_config(struct iwl_op_mode *op_mode)
143{
144 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
145 u8 radio_cfg_type, radio_cfg_step, radio_cfg_dash;
146 u32 reg_val = 0;
147
148 radio_cfg_type = (mvm->fw->phy_config & FW_PHY_CFG_RADIO_TYPE) >>
149 FW_PHY_CFG_RADIO_TYPE_POS;
150 radio_cfg_step = (mvm->fw->phy_config & FW_PHY_CFG_RADIO_STEP) >>
151 FW_PHY_CFG_RADIO_STEP_POS;
152 radio_cfg_dash = (mvm->fw->phy_config & FW_PHY_CFG_RADIO_DASH) >>
153 FW_PHY_CFG_RADIO_DASH_POS;
154
155
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
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 reg_val |= CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI;
171
172 iwl_trans_set_bits_mask(mvm->trans, CSR_HW_IF_CONFIG_REG,
173 CSR_HW_IF_CONFIG_REG_MSK_MAC_DASH |
174 CSR_HW_IF_CONFIG_REG_MSK_MAC_STEP |
175 CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE |
176 CSR_HW_IF_CONFIG_REG_MSK_PHY_STEP |
177 CSR_HW_IF_CONFIG_REG_MSK_PHY_DASH |
178 CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI |
179 CSR_HW_IF_CONFIG_REG_BIT_MAC_SI,
180 reg_val);
181
182 IWL_DEBUG_INFO(mvm, "Radio type=0x%x-0x%x-0x%x\n", radio_cfg_type,
183 radio_cfg_step, radio_cfg_dash);
184
185
186
187
188
189
190 if (mvm->trans->cfg->device_family != IWL_DEVICE_FAMILY_8000)
191 iwl_set_bits_mask_prph(mvm->trans, APMG_PS_CTRL_REG,
192 APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS,
193 ~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS);
194}
195
196struct iwl_rx_handlers {
197 u8 cmd_id;
198 bool async;
199 int (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb,
200 struct iwl_device_cmd *cmd);
201};
202
203#define RX_HANDLER(_cmd_id, _fn, _async) \
204 { .cmd_id = _cmd_id , .fn = _fn , .async = _async }
205
206
207
208
209
210
211
212
213
214
215
216static const struct iwl_rx_handlers iwl_mvm_rx_handlers[] = {
217 RX_HANDLER(REPLY_RX_MPDU_CMD, iwl_mvm_rx_rx_mpdu, false),
218 RX_HANDLER(REPLY_RX_PHY_CMD, iwl_mvm_rx_rx_phy_cmd, false),
219 RX_HANDLER(TX_CMD, iwl_mvm_rx_tx_cmd, false),
220 RX_HANDLER(BA_NOTIF, iwl_mvm_rx_ba_notif, false),
221
222 RX_HANDLER(BT_PROFILE_NOTIFICATION, iwl_mvm_rx_bt_coex_notif, true),
223 RX_HANDLER(BEACON_NOTIFICATION, iwl_mvm_rx_beacon_notif, false),
224 RX_HANDLER(STATISTICS_NOTIFICATION, iwl_mvm_rx_statistics, true),
225 RX_HANDLER(ANTENNA_COUPLING_NOTIFICATION,
226 iwl_mvm_rx_ant_coupling_notif, true),
227
228 RX_HANDLER(TIME_EVENT_NOTIFICATION, iwl_mvm_rx_time_event_notif, false),
229
230 RX_HANDLER(EOSP_NOTIFICATION, iwl_mvm_rx_eosp_notif, false),
231
232 RX_HANDLER(SCAN_REQUEST_CMD, iwl_mvm_rx_scan_response, false),
233 RX_HANDLER(SCAN_COMPLETE_NOTIFICATION, iwl_mvm_rx_scan_complete, true),
234 RX_HANDLER(SCAN_OFFLOAD_COMPLETE,
235 iwl_mvm_rx_scan_offload_complete_notif, true),
236 RX_HANDLER(MATCH_FOUND_NOTIFICATION, iwl_mvm_rx_sched_scan_results,
237 false),
238
239 RX_HANDLER(RADIO_VERSION_NOTIFICATION, iwl_mvm_rx_radio_ver, false),
240 RX_HANDLER(CARD_STATE_NOTIFICATION, iwl_mvm_rx_card_state_notif, false),
241
242 RX_HANDLER(MISSED_BEACONS_NOTIFICATION, iwl_mvm_rx_missed_beacons_notif,
243 false),
244
245 RX_HANDLER(REPLY_ERROR, iwl_mvm_rx_fw_error, false),
246 RX_HANDLER(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION,
247 iwl_mvm_power_uapsd_misbehaving_ap_notif, false),
248};
249#undef RX_HANDLER
250#define CMD(x) [x] = #x
251
252static const char *const iwl_mvm_cmd_strings[REPLY_MAX] = {
253 CMD(MVM_ALIVE),
254 CMD(REPLY_ERROR),
255 CMD(INIT_COMPLETE_NOTIF),
256 CMD(PHY_CONTEXT_CMD),
257 CMD(MGMT_MCAST_KEY),
258 CMD(TX_CMD),
259 CMD(TXPATH_FLUSH),
260 CMD(MAC_CONTEXT_CMD),
261 CMD(TIME_EVENT_CMD),
262 CMD(TIME_EVENT_NOTIFICATION),
263 CMD(BINDING_CONTEXT_CMD),
264 CMD(TIME_QUOTA_CMD),
265 CMD(NON_QOS_TX_COUNTER_CMD),
266 CMD(RADIO_VERSION_NOTIFICATION),
267 CMD(SCAN_REQUEST_CMD),
268 CMD(SCAN_ABORT_CMD),
269 CMD(SCAN_START_NOTIFICATION),
270 CMD(SCAN_RESULTS_NOTIFICATION),
271 CMD(SCAN_COMPLETE_NOTIFICATION),
272 CMD(NVM_ACCESS_CMD),
273 CMD(PHY_CONFIGURATION_CMD),
274 CMD(CALIB_RES_NOTIF_PHY_DB),
275 CMD(SET_CALIB_DEFAULT_CMD),
276 CMD(CALIBRATION_COMPLETE_NOTIFICATION),
277 CMD(ADD_STA_KEY),
278 CMD(ADD_STA),
279 CMD(REMOVE_STA),
280 CMD(LQ_CMD),
281 CMD(SCAN_OFFLOAD_CONFIG_CMD),
282 CMD(MATCH_FOUND_NOTIFICATION),
283 CMD(SCAN_OFFLOAD_REQUEST_CMD),
284 CMD(SCAN_OFFLOAD_ABORT_CMD),
285 CMD(SCAN_OFFLOAD_COMPLETE),
286 CMD(SCAN_OFFLOAD_UPDATE_PROFILES_CMD),
287 CMD(POWER_TABLE_CMD),
288 CMD(WEP_KEY),
289 CMD(REPLY_RX_PHY_CMD),
290 CMD(REPLY_RX_MPDU_CMD),
291 CMD(BEACON_NOTIFICATION),
292 CMD(BEACON_TEMPLATE_CMD),
293 CMD(STATISTICS_NOTIFICATION),
294 CMD(EOSP_NOTIFICATION),
295 CMD(REDUCE_TX_POWER_CMD),
296 CMD(TX_ANT_CONFIGURATION_CMD),
297 CMD(D3_CONFIG_CMD),
298 CMD(D0I3_END_CMD),
299 CMD(PROT_OFFLOAD_CONFIG_CMD),
300 CMD(OFFLOADS_QUERY_CMD),
301 CMD(REMOTE_WAKE_CONFIG_CMD),
302 CMD(WOWLAN_PATTERNS),
303 CMD(WOWLAN_CONFIGURATION),
304 CMD(WOWLAN_TSC_RSC_PARAM),
305 CMD(WOWLAN_TKIP_PARAM),
306 CMD(WOWLAN_KEK_KCK_MATERIAL),
307 CMD(WOWLAN_GET_STATUSES),
308 CMD(WOWLAN_TX_POWER_PER_DB),
309 CMD(NET_DETECT_CONFIG_CMD),
310 CMD(NET_DETECT_PROFILES_QUERY_CMD),
311 CMD(NET_DETECT_PROFILES_CMD),
312 CMD(NET_DETECT_HOTSPOTS_CMD),
313 CMD(NET_DETECT_HOTSPOTS_QUERY_CMD),
314 CMD(CARD_STATE_NOTIFICATION),
315 CMD(MISSED_BEACONS_NOTIFICATION),
316 CMD(BT_COEX_PRIO_TABLE),
317 CMD(BT_COEX_PROT_ENV),
318 CMD(BT_PROFILE_NOTIFICATION),
319 CMD(BT_CONFIG),
320 CMD(MCAST_FILTER_CMD),
321 CMD(BCAST_FILTER_CMD),
322 CMD(REPLY_SF_CFG_CMD),
323 CMD(REPLY_BEACON_FILTERING_CMD),
324 CMD(REPLY_THERMAL_MNG_BACKOFF),
325 CMD(MAC_PM_POWER_TABLE),
326 CMD(BT_COEX_CI),
327 CMD(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION),
328 CMD(ANTENNA_COUPLING_NOTIFICATION),
329};
330#undef CMD
331
332
333static void iwl_mvm_async_handlers_wk(struct work_struct *wk);
334static void iwl_mvm_d0i3_exit_work(struct work_struct *wk);
335
336static u32 calc_min_backoff(struct iwl_trans *trans, const struct iwl_cfg *cfg)
337{
338 const struct iwl_pwr_tx_backoff *pwr_tx_backoff = cfg->pwr_tx_backoffs;
339
340 if (!pwr_tx_backoff)
341 return 0;
342
343 while (pwr_tx_backoff->pwr) {
344 if (trans->dflt_pwr_limit >= pwr_tx_backoff->pwr)
345 return pwr_tx_backoff->backoff;
346
347 pwr_tx_backoff++;
348 }
349
350 return 0;
351}
352
353static struct iwl_op_mode *
354iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg,
355 const struct iwl_fw *fw, struct dentry *dbgfs_dir)
356{
357 struct ieee80211_hw *hw;
358 struct iwl_op_mode *op_mode;
359 struct iwl_mvm *mvm;
360 struct iwl_trans_config trans_cfg = {};
361 static const u8 no_reclaim_cmds[] = {
362 TX_CMD,
363 };
364 int err, scan_size;
365 u32 min_backoff;
366
367
368
369
370
371
372 BUILD_BUG_ON(ARRAY_SIZE(mvm->fw_id_to_mac_id) != IWL_MVM_STATION_COUNT);
373
374
375
376
377 hw = ieee80211_alloc_hw(sizeof(struct iwl_op_mode) +
378 sizeof(struct iwl_mvm),
379 &iwl_mvm_hw_ops);
380 if (!hw)
381 return NULL;
382
383 op_mode = hw->priv;
384 op_mode->ops = &iwl_mvm_ops;
385
386 mvm = IWL_OP_MODE_GET_MVM(op_mode);
387 mvm->dev = trans->dev;
388 mvm->trans = trans;
389 mvm->cfg = cfg;
390 mvm->fw = fw;
391 mvm->hw = hw;
392
393 mvm->restart_fw = iwlwifi_mod_params.restart_fw ? -1 : 0;
394
395 mvm->aux_queue = 15;
396 mvm->first_agg_queue = 16;
397 mvm->last_agg_queue = mvm->cfg->base_params->num_of_queues - 1;
398 if (mvm->cfg->base_params->num_of_queues == 16) {
399 mvm->aux_queue = 11;
400 mvm->first_agg_queue = 12;
401 }
402 mvm->sf_state = SF_UNINIT;
403
404 mutex_init(&mvm->mutex);
405 spin_lock_init(&mvm->async_handlers_lock);
406 INIT_LIST_HEAD(&mvm->time_event_list);
407 INIT_LIST_HEAD(&mvm->async_handlers_list);
408 spin_lock_init(&mvm->time_event_lock);
409
410 INIT_WORK(&mvm->async_handlers_wk, iwl_mvm_async_handlers_wk);
411 INIT_WORK(&mvm->roc_done_wk, iwl_mvm_roc_done_wk);
412 INIT_WORK(&mvm->sta_drained_wk, iwl_mvm_sta_drained_wk);
413 INIT_WORK(&mvm->d0i3_exit_work, iwl_mvm_d0i3_exit_work);
414
415 spin_lock_init(&mvm->d0i3_tx_lock);
416 skb_queue_head_init(&mvm->d0i3_tx);
417 init_waitqueue_head(&mvm->d0i3_exit_waitq);
418
419 SET_IEEE80211_DEV(mvm->hw, mvm->trans->dev);
420
421
422
423
424
425 trans_cfg.op_mode = op_mode;
426 trans_cfg.no_reclaim_cmds = no_reclaim_cmds;
427 trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds);
428 trans_cfg.rx_buf_size_8k = iwlwifi_mod_params.amsdu_size_8K;
429
430 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_DW_BC_TABLE)
431 trans_cfg.bc_table_dword = true;
432
433 if (!iwlwifi_mod_params.wd_disable)
434 trans_cfg.queue_watchdog_timeout = cfg->base_params->wd_timeout;
435 else
436 trans_cfg.queue_watchdog_timeout = IWL_WATCHDOG_DISABLED;
437
438 trans_cfg.command_names = iwl_mvm_cmd_strings;
439
440 trans_cfg.cmd_queue = IWL_MVM_CMD_QUEUE;
441 trans_cfg.cmd_fifo = IWL_MVM_CMD_FIFO;
442
443 snprintf(mvm->hw->wiphy->fw_version,
444 sizeof(mvm->hw->wiphy->fw_version),
445 "%s", fw->fw_version);
446
447
448 iwl_trans_configure(mvm->trans, &trans_cfg);
449
450 trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD;
451 trans->rx_mpdu_cmd_hdr_size = sizeof(struct iwl_rx_mpdu_res_start);
452
453
454 iwl_notification_wait_init(&mvm->notif_wait);
455
456
457 mvm->phy_db = iwl_phy_db_init(trans);
458 if (!mvm->phy_db) {
459 IWL_ERR(mvm, "Cannot init phy_db\n");
460 goto out_free;
461 }
462
463 IWL_INFO(mvm, "Detected %s, REV=0x%X\n",
464 mvm->cfg->name, mvm->trans->hw_rev);
465
466 min_backoff = calc_min_backoff(trans, cfg);
467 iwl_mvm_tt_initialize(mvm, min_backoff);
468
469
470
471
472
473 if (iwlwifi_mod_params.nvm_file) {
474 err = iwl_nvm_init(mvm);
475 if (err)
476 goto out_free;
477 } else {
478 err = iwl_trans_start_hw(mvm->trans);
479 if (err)
480 goto out_free;
481
482 mutex_lock(&mvm->mutex);
483 err = iwl_run_init_mvm_ucode(mvm, true);
484 iwl_trans_stop_device(trans);
485 mutex_unlock(&mvm->mutex);
486
487 if (err < 0 && !iwlmvm_mod_params.init_dbg) {
488 IWL_ERR(mvm, "Failed to run INIT ucode: %d\n", err);
489 goto out_free;
490 }
491 }
492
493 scan_size = sizeof(struct iwl_scan_cmd) +
494 mvm->fw->ucode_capa.max_probe_length +
495 (MAX_NUM_SCAN_CHANNELS * sizeof(struct iwl_scan_channel));
496 mvm->scan_cmd = kmalloc(scan_size, GFP_KERNEL);
497 if (!mvm->scan_cmd)
498 goto out_free;
499
500 err = iwl_mvm_mac_setup_register(mvm);
501 if (err)
502 goto out_free;
503
504 err = iwl_mvm_dbgfs_register(mvm, dbgfs_dir);
505 if (err)
506 goto out_unregister;
507
508 memset(&mvm->rx_stats, 0, sizeof(struct mvm_statistics_rx));
509
510
511 set_bit(IWL_MVM_REF_UCODE_DOWN, mvm->ref_bitmap);
512
513 return op_mode;
514
515 out_unregister:
516 ieee80211_unregister_hw(mvm->hw);
517 iwl_mvm_leds_exit(mvm);
518 out_free:
519 iwl_phy_db_free(mvm->phy_db);
520 kfree(mvm->scan_cmd);
521 if (!iwlwifi_mod_params.nvm_file)
522 iwl_trans_op_mode_leave(trans);
523 ieee80211_free_hw(mvm->hw);
524 return NULL;
525}
526
527static void iwl_op_mode_mvm_stop(struct iwl_op_mode *op_mode)
528{
529 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
530 int i;
531
532 iwl_mvm_leds_exit(mvm);
533
534 iwl_mvm_tt_exit(mvm);
535
536 ieee80211_unregister_hw(mvm->hw);
537
538 kfree(mvm->scan_cmd);
539 vfree(mvm->fw_error_dump);
540 kfree(mvm->fw_error_sram);
541 kfree(mvm->mcast_filter_cmd);
542 mvm->mcast_filter_cmd = NULL;
543
544#if defined(CONFIG_PM_SLEEP) && defined(CONFIG_IWLWIFI_DEBUGFS)
545 kfree(mvm->d3_resume_sram);
546#endif
547
548 iwl_trans_op_mode_leave(mvm->trans);
549
550 iwl_phy_db_free(mvm->phy_db);
551 mvm->phy_db = NULL;
552
553 iwl_free_nvm_data(mvm->nvm_data);
554 for (i = 0; i < NVM_MAX_NUM_SECTIONS; i++)
555 kfree(mvm->nvm_sections[i].data);
556
557 ieee80211_free_hw(mvm->hw);
558}
559
560struct iwl_async_handler_entry {
561 struct list_head list;
562 struct iwl_rx_cmd_buffer rxb;
563 int (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb,
564 struct iwl_device_cmd *cmd);
565};
566
567void iwl_mvm_async_handlers_purge(struct iwl_mvm *mvm)
568{
569 struct iwl_async_handler_entry *entry, *tmp;
570
571 spin_lock_bh(&mvm->async_handlers_lock);
572 list_for_each_entry_safe(entry, tmp, &mvm->async_handlers_list, list) {
573 iwl_free_rxb(&entry->rxb);
574 list_del(&entry->list);
575 kfree(entry);
576 }
577 spin_unlock_bh(&mvm->async_handlers_lock);
578}
579
580static void iwl_mvm_async_handlers_wk(struct work_struct *wk)
581{
582 struct iwl_mvm *mvm =
583 container_of(wk, struct iwl_mvm, async_handlers_wk);
584 struct iwl_async_handler_entry *entry, *tmp;
585 struct list_head local_list;
586
587 INIT_LIST_HEAD(&local_list);
588
589
590 mutex_lock(&mvm->mutex);
591
592
593
594
595
596 spin_lock_bh(&mvm->async_handlers_lock);
597 list_splice_init(&mvm->async_handlers_list, &local_list);
598 spin_unlock_bh(&mvm->async_handlers_lock);
599
600 list_for_each_entry_safe(entry, tmp, &local_list, list) {
601 if (entry->fn(mvm, &entry->rxb, NULL))
602 IWL_WARN(mvm,
603 "returned value from ASYNC handlers are ignored\n");
604 iwl_free_rxb(&entry->rxb);
605 list_del(&entry->list);
606 kfree(entry);
607 }
608 mutex_unlock(&mvm->mutex);
609}
610
611static int iwl_mvm_rx_dispatch(struct iwl_op_mode *op_mode,
612 struct iwl_rx_cmd_buffer *rxb,
613 struct iwl_device_cmd *cmd)
614{
615 struct iwl_rx_packet *pkt = rxb_addr(rxb);
616 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
617 u8 i;
618
619
620
621
622
623
624 iwl_notification_wait_notify(&mvm->notif_wait, pkt);
625
626 for (i = 0; i < ARRAY_SIZE(iwl_mvm_rx_handlers); i++) {
627 const struct iwl_rx_handlers *rx_h = &iwl_mvm_rx_handlers[i];
628 struct iwl_async_handler_entry *entry;
629
630 if (rx_h->cmd_id != pkt->hdr.cmd)
631 continue;
632
633 if (!rx_h->async)
634 return rx_h->fn(mvm, rxb, cmd);
635
636 entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
637
638 if (!entry)
639 return 0;
640
641 entry->rxb._page = rxb_steal_page(rxb);
642 entry->rxb._offset = rxb->_offset;
643 entry->rxb._rx_page_order = rxb->_rx_page_order;
644 entry->fn = rx_h->fn;
645 spin_lock(&mvm->async_handlers_lock);
646 list_add_tail(&entry->list, &mvm->async_handlers_list);
647 spin_unlock(&mvm->async_handlers_lock);
648 schedule_work(&mvm->async_handlers_wk);
649 break;
650 }
651
652 return 0;
653}
654
655static void iwl_mvm_stop_sw_queue(struct iwl_op_mode *op_mode, int queue)
656{
657 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
658 int mq = mvm->queue_to_mac80211[queue];
659
660 if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE))
661 return;
662
663 if (atomic_inc_return(&mvm->queue_stop_count[mq]) > 1) {
664 IWL_DEBUG_TX_QUEUES(mvm,
665 "queue %d (mac80211 %d) already stopped\n",
666 queue, mq);
667 return;
668 }
669
670 set_bit(mq, &mvm->transport_queue_stop);
671 ieee80211_stop_queue(mvm->hw, mq);
672}
673
674static void iwl_mvm_wake_sw_queue(struct iwl_op_mode *op_mode, int queue)
675{
676 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
677 int mq = mvm->queue_to_mac80211[queue];
678
679 if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE))
680 return;
681
682 if (atomic_dec_return(&mvm->queue_stop_count[mq]) > 0) {
683 IWL_DEBUG_TX_QUEUES(mvm,
684 "queue %d (mac80211 %d) already awake\n",
685 queue, mq);
686 return;
687 }
688
689 clear_bit(mq, &mvm->transport_queue_stop);
690
691 ieee80211_wake_queue(mvm->hw, mq);
692}
693
694void iwl_mvm_set_hw_ctkill_state(struct iwl_mvm *mvm, bool state)
695{
696 if (state)
697 set_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
698 else
699 clear_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
700
701 wiphy_rfkill_set_hw_state(mvm->hw->wiphy, iwl_mvm_is_radio_killed(mvm));
702}
703
704static bool iwl_mvm_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state)
705{
706 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
707
708 if (state)
709 set_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
710 else
711 clear_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
712
713 wiphy_rfkill_set_hw_state(mvm->hw->wiphy, iwl_mvm_is_radio_killed(mvm));
714
715 return state && mvm->cur_ucode != IWL_UCODE_INIT;
716}
717
718static void iwl_mvm_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb)
719{
720 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
721 struct ieee80211_tx_info *info;
722
723 info = IEEE80211_SKB_CB(skb);
724 iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]);
725 ieee80211_free_txskb(mvm->hw, skb);
726}
727
728struct iwl_mvm_reprobe {
729 struct device *dev;
730 struct work_struct work;
731};
732
733static void iwl_mvm_reprobe_wk(struct work_struct *wk)
734{
735 struct iwl_mvm_reprobe *reprobe;
736
737 reprobe = container_of(wk, struct iwl_mvm_reprobe, work);
738 if (device_reprobe(reprobe->dev))
739 dev_err(reprobe->dev, "reprobe failed!\n");
740 kfree(reprobe);
741 module_put(THIS_MODULE);
742}
743
744static void iwl_mvm_nic_restart(struct iwl_mvm *mvm)
745{
746 iwl_abort_notification_waits(&mvm->notif_wait);
747
748
749
750
751
752
753
754
755
756
757
758 switch (mvm->scan_status) {
759 case IWL_MVM_SCAN_NONE:
760 break;
761 case IWL_MVM_SCAN_OS:
762 ieee80211_scan_completed(mvm->hw, true);
763 break;
764 case IWL_MVM_SCAN_SCHED:
765
766 if (!mvm->restart_fw)
767 ieee80211_sched_scan_stopped(mvm->hw);
768 break;
769 }
770
771
772
773
774
775
776
777 if (test_and_set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
778 struct iwl_mvm_reprobe *reprobe;
779
780 IWL_ERR(mvm,
781 "Firmware error during reconfiguration - reprobe!\n");
782
783
784
785
786
787
788 if (!try_module_get(THIS_MODULE)) {
789 IWL_ERR(mvm, "Module is being unloaded - abort\n");
790 return;
791 }
792
793 reprobe = kzalloc(sizeof(*reprobe), GFP_ATOMIC);
794 if (!reprobe) {
795 module_put(THIS_MODULE);
796 return;
797 }
798 reprobe->dev = mvm->trans->dev;
799 INIT_WORK(&reprobe->work, iwl_mvm_reprobe_wk);
800 schedule_work(&reprobe->work);
801 } else if (mvm->cur_ucode == IWL_UCODE_REGULAR && mvm->restart_fw) {
802
803 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
804
805 if (mvm->restart_fw > 0)
806 mvm->restart_fw--;
807 ieee80211_restart_hw(mvm->hw);
808 }
809}
810
811#ifdef CONFIG_IWLWIFI_DEBUGFS
812void iwl_mvm_fw_error_dump(struct iwl_mvm *mvm)
813{
814 struct iwl_fw_error_dump_file *dump_file;
815 struct iwl_fw_error_dump_data *dump_data;
816 u32 file_len;
817
818 lockdep_assert_held(&mvm->mutex);
819
820 if (mvm->fw_error_dump)
821 return;
822
823 file_len = mvm->fw_error_sram_len +
824 sizeof(*dump_file) +
825 sizeof(*dump_data);
826
827 dump_file = vmalloc(file_len);
828 if (!dump_file)
829 return;
830
831 mvm->fw_error_dump = dump_file;
832
833 dump_file->barker = cpu_to_le32(IWL_FW_ERROR_DUMP_BARKER);
834 dump_file->file_len = cpu_to_le32(file_len);
835 dump_data = (void *)dump_file->data;
836 dump_data->type = IWL_FW_ERROR_DUMP_SRAM;
837 dump_data->len = cpu_to_le32(mvm->fw_error_sram_len);
838
839
840
841
842
843
844 memcpy(dump_data->data, mvm->fw_error_sram, mvm->fw_error_sram_len);
845}
846#endif
847
848static void iwl_mvm_nic_error(struct iwl_op_mode *op_mode)
849{
850 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
851
852 iwl_mvm_dump_nic_error_log(mvm);
853
854#ifdef CONFIG_IWLWIFI_DEBUGFS
855 iwl_mvm_fw_error_sram_dump(mvm);
856#endif
857
858 iwl_mvm_nic_restart(mvm);
859}
860
861static void iwl_mvm_cmd_queue_full(struct iwl_op_mode *op_mode)
862{
863 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
864
865 WARN_ON(1);
866 iwl_mvm_nic_restart(mvm);
867}
868
869struct iwl_d0i3_iter_data {
870 struct iwl_mvm *mvm;
871 u8 ap_sta_id;
872 u8 vif_count;
873 u8 offloading_tid;
874 bool disable_offloading;
875};
876
877static bool iwl_mvm_disallow_offloading(struct iwl_mvm *mvm,
878 struct ieee80211_vif *vif,
879 struct iwl_d0i3_iter_data *iter_data)
880{
881 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
882 struct ieee80211_sta *ap_sta;
883 struct iwl_mvm_sta *mvmsta;
884 u32 available_tids = 0;
885 u8 tid;
886
887 if (WARN_ON(vif->type != NL80211_IFTYPE_STATION ||
888 mvmvif->ap_sta_id == IWL_MVM_STATION_COUNT))
889 return false;
890
891 ap_sta = rcu_dereference(mvm->fw_id_to_mac_id[mvmvif->ap_sta_id]);
892 if (IS_ERR_OR_NULL(ap_sta))
893 return false;
894
895 mvmsta = iwl_mvm_sta_from_mac80211(ap_sta);
896 spin_lock_bh(&mvmsta->lock);
897 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
898 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
899
900
901
902
903
904
905 if (iwl_mvm_tid_queued(tid_data))
906 continue;
907
908 if (tid_data->state != IWL_AGG_OFF)
909 continue;
910
911 available_tids |= BIT(tid);
912 }
913 spin_unlock_bh(&mvmsta->lock);
914
915
916
917
918
919
920
921 if (!available_tids)
922 return true;
923
924
925 iter_data->offloading_tid = ffs(available_tids) - 1;
926 return false;
927}
928
929static void iwl_mvm_enter_d0i3_iterator(void *_data, u8 *mac,
930 struct ieee80211_vif *vif)
931{
932 struct iwl_d0i3_iter_data *data = _data;
933 struct iwl_mvm *mvm = data->mvm;
934 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
935 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE;
936
937 IWL_DEBUG_RPM(mvm, "entering D0i3 - vif %pM\n", vif->addr);
938 if (vif->type != NL80211_IFTYPE_STATION ||
939 !vif->bss_conf.assoc)
940 return;
941
942
943
944
945
946
947 if (iwl_mvm_disallow_offloading(mvm, vif, data))
948 data->disable_offloading = true;
949
950 iwl_mvm_update_d0i3_power_mode(mvm, vif, true, flags);
951 iwl_mvm_send_proto_offload(mvm, vif, data->disable_offloading, flags);
952
953
954
955
956
957
958
959 data->ap_sta_id = mvmvif->ap_sta_id;
960 data->vif_count++;
961}
962
963static void iwl_mvm_set_wowlan_data(struct iwl_mvm *mvm,
964 struct iwl_wowlan_config_cmd_v3 *cmd,
965 struct iwl_d0i3_iter_data *iter_data)
966{
967 struct ieee80211_sta *ap_sta;
968 struct iwl_mvm_sta *mvm_ap_sta;
969
970 if (iter_data->ap_sta_id == IWL_MVM_STATION_COUNT)
971 return;
972
973 rcu_read_lock();
974
975 ap_sta = rcu_dereference(mvm->fw_id_to_mac_id[iter_data->ap_sta_id]);
976 if (IS_ERR_OR_NULL(ap_sta))
977 goto out;
978
979 mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta);
980 cmd->common.is_11n_connection = ap_sta->ht_cap.ht_supported;
981 cmd->offloading_tid = iter_data->offloading_tid;
982
983
984
985
986
987 iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, &cmd->common);
988out:
989 rcu_read_unlock();
990}
991static int iwl_mvm_enter_d0i3(struct iwl_op_mode *op_mode)
992{
993 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
994 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE;
995 int ret;
996 struct iwl_d0i3_iter_data d0i3_iter_data = {
997 .mvm = mvm,
998 };
999 struct iwl_wowlan_config_cmd_v3 wowlan_config_cmd = {
1000 .common = {
1001 .wakeup_filter =
1002 cpu_to_le32(IWL_WOWLAN_WAKEUP_RX_FRAME |
1003 IWL_WOWLAN_WAKEUP_BEACON_MISS |
1004 IWL_WOWLAN_WAKEUP_LINK_CHANGE |
1005 IWL_WOWLAN_WAKEUP_BCN_FILTERING),
1006 },
1007 };
1008 struct iwl_d3_manager_config d3_cfg_cmd = {
1009 .min_sleep_time = cpu_to_le32(1000),
1010 };
1011
1012 IWL_DEBUG_RPM(mvm, "MVM entering D0i3\n");
1013
1014
1015 set_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1016 synchronize_net();
1017
1018 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
1019 IEEE80211_IFACE_ITER_NORMAL,
1020 iwl_mvm_enter_d0i3_iterator,
1021 &d0i3_iter_data);
1022 if (d0i3_iter_data.vif_count == 1) {
1023 mvm->d0i3_ap_sta_id = d0i3_iter_data.ap_sta_id;
1024 mvm->d0i3_offloading = !d0i3_iter_data.disable_offloading;
1025 } else {
1026 WARN_ON_ONCE(d0i3_iter_data.vif_count > 1);
1027 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1028 mvm->d0i3_offloading = false;
1029 }
1030
1031 iwl_mvm_set_wowlan_data(mvm, &wowlan_config_cmd, &d0i3_iter_data);
1032 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, flags,
1033 sizeof(wowlan_config_cmd),
1034 &wowlan_config_cmd);
1035 if (ret)
1036 return ret;
1037
1038 return iwl_mvm_send_cmd_pdu(mvm, D3_CONFIG_CMD,
1039 flags | CMD_MAKE_TRANS_IDLE,
1040 sizeof(d3_cfg_cmd), &d3_cfg_cmd);
1041}
1042
1043static void iwl_mvm_exit_d0i3_iterator(void *_data, u8 *mac,
1044 struct ieee80211_vif *vif)
1045{
1046 struct iwl_mvm *mvm = _data;
1047 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO;
1048
1049 IWL_DEBUG_RPM(mvm, "exiting D0i3 - vif %pM\n", vif->addr);
1050 if (vif->type != NL80211_IFTYPE_STATION ||
1051 !vif->bss_conf.assoc)
1052 return;
1053
1054 iwl_mvm_update_d0i3_power_mode(mvm, vif, false, flags);
1055}
1056
1057static void iwl_mvm_d0i3_disconnect_iter(void *data, u8 *mac,
1058 struct ieee80211_vif *vif)
1059{
1060 struct iwl_mvm *mvm = data;
1061 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1062
1063 if (vif->type == NL80211_IFTYPE_STATION && vif->bss_conf.assoc &&
1064 mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id)
1065 ieee80211_connection_loss(vif);
1066}
1067
1068void iwl_mvm_d0i3_enable_tx(struct iwl_mvm *mvm, __le16 *qos_seq)
1069{
1070 struct ieee80211_sta *sta = NULL;
1071 struct iwl_mvm_sta *mvm_ap_sta;
1072 int i;
1073 bool wake_queues = false;
1074
1075 lockdep_assert_held(&mvm->mutex);
1076
1077 spin_lock_bh(&mvm->d0i3_tx_lock);
1078
1079 if (mvm->d0i3_ap_sta_id == IWL_MVM_STATION_COUNT)
1080 goto out;
1081
1082 IWL_DEBUG_RPM(mvm, "re-enqueue packets\n");
1083
1084
1085 sta = rcu_dereference_protected(
1086 mvm->fw_id_to_mac_id[mvm->d0i3_ap_sta_id],
1087 lockdep_is_held(&mvm->mutex));
1088
1089 if (IS_ERR_OR_NULL(sta)) {
1090 sta = NULL;
1091 goto out;
1092 }
1093
1094 if (mvm->d0i3_offloading && qos_seq) {
1095
1096 mvm_ap_sta = (struct iwl_mvm_sta *)sta->drv_priv;
1097 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
1098 u16 seq = le16_to_cpu(qos_seq[i]);
1099
1100 seq += 0x10;
1101 mvm_ap_sta->tid_data[i].seq_number = seq;
1102 }
1103 }
1104out:
1105
1106 while (!skb_queue_empty(&mvm->d0i3_tx)) {
1107 struct sk_buff *skb = __skb_dequeue(&mvm->d0i3_tx);
1108
1109 if (!sta || iwl_mvm_tx_skb(mvm, skb, sta))
1110 ieee80211_free_txskb(mvm->hw, skb);
1111
1112
1113 wake_queues = true;
1114 }
1115 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1116 wake_up(&mvm->d0i3_exit_waitq);
1117 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1118 if (wake_queues)
1119 ieee80211_wake_queues(mvm->hw);
1120
1121 spin_unlock_bh(&mvm->d0i3_tx_lock);
1122}
1123
1124static void iwl_mvm_d0i3_exit_work(struct work_struct *wk)
1125{
1126 struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, d0i3_exit_work);
1127 struct iwl_host_cmd get_status_cmd = {
1128 .id = WOWLAN_GET_STATUSES,
1129 .flags = CMD_SYNC | CMD_HIGH_PRIO | CMD_WANT_SKB,
1130 };
1131 struct iwl_wowlan_status_v6 *status;
1132 int ret;
1133 u32 disconnection_reasons, wakeup_reasons;
1134 __le16 *qos_seq = NULL;
1135
1136 mutex_lock(&mvm->mutex);
1137 ret = iwl_mvm_send_cmd(mvm, &get_status_cmd);
1138 if (ret)
1139 goto out;
1140
1141 if (!get_status_cmd.resp_pkt)
1142 goto out;
1143
1144 status = (void *)get_status_cmd.resp_pkt->data;
1145 wakeup_reasons = le32_to_cpu(status->wakeup_reasons);
1146 qos_seq = status->qos_seq_ctr;
1147
1148 IWL_DEBUG_RPM(mvm, "wakeup reasons: 0x%x\n", wakeup_reasons);
1149
1150 disconnection_reasons =
1151 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON |
1152 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH;
1153 if (wakeup_reasons & disconnection_reasons)
1154 ieee80211_iterate_active_interfaces(
1155 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1156 iwl_mvm_d0i3_disconnect_iter, mvm);
1157
1158 iwl_free_resp(&get_status_cmd);
1159out:
1160 iwl_mvm_d0i3_enable_tx(mvm, qos_seq);
1161 mutex_unlock(&mvm->mutex);
1162}
1163
1164static int iwl_mvm_exit_d0i3(struct iwl_op_mode *op_mode)
1165{
1166 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1167 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE |
1168 CMD_WAKE_UP_TRANS;
1169 int ret;
1170
1171 IWL_DEBUG_RPM(mvm, "MVM exiting D0i3\n");
1172
1173 ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, flags, 0, NULL);
1174 if (ret)
1175 goto out;
1176
1177 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
1178 IEEE80211_IFACE_ITER_NORMAL,
1179 iwl_mvm_exit_d0i3_iterator,
1180 mvm);
1181out:
1182 schedule_work(&mvm->d0i3_exit_work);
1183 return ret;
1184}
1185
1186static const struct iwl_op_mode_ops iwl_mvm_ops = {
1187 .start = iwl_op_mode_mvm_start,
1188 .stop = iwl_op_mode_mvm_stop,
1189 .rx = iwl_mvm_rx_dispatch,
1190 .queue_full = iwl_mvm_stop_sw_queue,
1191 .queue_not_full = iwl_mvm_wake_sw_queue,
1192 .hw_rf_kill = iwl_mvm_set_hw_rfkill_state,
1193 .free_skb = iwl_mvm_free_skb,
1194 .nic_error = iwl_mvm_nic_error,
1195 .cmd_queue_full = iwl_mvm_cmd_queue_full,
1196 .nic_config = iwl_mvm_nic_config,
1197 .enter_d0i3 = iwl_mvm_enter_d0i3,
1198 .exit_d0i3 = iwl_mvm_exit_d0i3,
1199};
1200