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1// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
2/*
3 * Copyright (C) 2012-2014, 2018-2023 Intel Corporation
4 * Copyright (C) 2013-2014 Intel Mobile Communications GmbH
5 * Copyright (C) 2015-2017 Intel Deutschland GmbH
6 */
7#include <net/mac80211.h>
8
9#include "iwl-debug.h"
10#include "iwl-io.h"
11#include "iwl-prph.h"
12#include "iwl-csr.h"
13#include "mvm.h"
14#include "fw/api/rs.h"
15#include "fw/img.h"
16
17/*
18 * Will return 0 even if the cmd failed when RFKILL is asserted unless
19 * CMD_WANT_SKB is set in cmd->flags.
20 */
21int iwl_mvm_send_cmd(struct iwl_mvm *mvm, struct iwl_host_cmd *cmd)
22{
23 int ret;
24
25#if defined(CONFIG_IWLWIFI_DEBUGFS) && defined(CONFIG_PM_SLEEP)
26 if (WARN_ON(mvm->d3_test_active))
27 return -EIO;
28#endif
29
30 /*
31 * Synchronous commands from this op-mode must hold
32 * the mutex, this ensures we don't try to send two
33 * (or more) synchronous commands at a time.
34 */
35 if (!(cmd->flags & CMD_ASYNC))
36 lockdep_assert_held(&mvm->mutex);
37
38 ret = iwl_trans_send_cmd(mvm->trans, cmd);
39
40 /*
41 * If the caller wants the SKB, then don't hide any problems, the
42 * caller might access the response buffer which will be NULL if
43 * the command failed.
44 */
45 if (cmd->flags & CMD_WANT_SKB)
46 return ret;
47
48 /*
49 * Silently ignore failures if RFKILL is asserted or
50 * we are in suspend\resume process
51 */
52 if (!ret || ret == -ERFKILL || ret == -EHOSTDOWN)
53 return 0;
54 return ret;
55}
56
57int iwl_mvm_send_cmd_pdu(struct iwl_mvm *mvm, u32 id,
58 u32 flags, u16 len, const void *data)
59{
60 struct iwl_host_cmd cmd = {
61 .id = id,
62 .len = { len, },
63 .data = { data, },
64 .flags = flags,
65 };
66
67 return iwl_mvm_send_cmd(mvm, &cmd);
68}
69
70/*
71 * We assume that the caller set the status to the success value
72 */
73int iwl_mvm_send_cmd_status(struct iwl_mvm *mvm, struct iwl_host_cmd *cmd,
74 u32 *status)
75{
76 struct iwl_rx_packet *pkt;
77 struct iwl_cmd_response *resp;
78 int ret, resp_len;
79
80 lockdep_assert_held(&mvm->mutex);
81
82#if defined(CONFIG_IWLWIFI_DEBUGFS) && defined(CONFIG_PM_SLEEP)
83 if (WARN_ON(mvm->d3_test_active))
84 return -EIO;
85#endif
86
87 /*
88 * Only synchronous commands can wait for status,
89 * we use WANT_SKB so the caller can't.
90 */
91 if (WARN_ONCE(cmd->flags & (CMD_ASYNC | CMD_WANT_SKB),
92 "cmd flags %x", cmd->flags))
93 return -EINVAL;
94
95 cmd->flags |= CMD_WANT_SKB;
96
97 ret = iwl_trans_send_cmd(mvm->trans, cmd);
98 if (ret == -ERFKILL) {
99 /*
100 * The command failed because of RFKILL, don't update
101 * the status, leave it as success and return 0.
102 */
103 return 0;
104 } else if (ret) {
105 return ret;
106 }
107
108 pkt = cmd->resp_pkt;
109
110 resp_len = iwl_rx_packet_payload_len(pkt);
111 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
112 ret = -EIO;
113 goto out_free_resp;
114 }
115
116 resp = (void *)pkt->data;
117 *status = le32_to_cpu(resp->status);
118 out_free_resp:
119 iwl_free_resp(cmd);
120 return ret;
121}
122
123/*
124 * We assume that the caller set the status to the sucess value
125 */
126int iwl_mvm_send_cmd_pdu_status(struct iwl_mvm *mvm, u32 id, u16 len,
127 const void *data, u32 *status)
128{
129 struct iwl_host_cmd cmd = {
130 .id = id,
131 .len = { len, },
132 .data = { data, },
133 };
134
135 return iwl_mvm_send_cmd_status(mvm, &cmd, status);
136}
137
138int iwl_mvm_legacy_hw_idx_to_mac80211_idx(u32 rate_n_flags,
139 enum nl80211_band band)
140{
141 int format = rate_n_flags & RATE_MCS_MOD_TYPE_MSK;
142 int rate = rate_n_flags & RATE_LEGACY_RATE_MSK;
143 bool is_LB = band == NL80211_BAND_2GHZ;
144
145 if (format == RATE_MCS_LEGACY_OFDM_MSK)
146 return is_LB ? rate + IWL_FIRST_OFDM_RATE :
147 rate;
148
149 /* CCK is not allowed in HB */
150 return is_LB ? rate : -1;
151}
152
153int iwl_mvm_legacy_rate_to_mac80211_idx(u32 rate_n_flags,
154 enum nl80211_band band)
155{
156 int rate = rate_n_flags & RATE_LEGACY_RATE_MSK_V1;
157 int idx;
158 int band_offset = 0;
159
160 /* Legacy rate format, search for match in table */
161 if (band != NL80211_BAND_2GHZ)
162 band_offset = IWL_FIRST_OFDM_RATE;
163 for (idx = band_offset; idx < IWL_RATE_COUNT_LEGACY; idx++)
164 if (iwl_fw_rate_idx_to_plcp(idx) == rate)
165 return idx - band_offset;
166
167 return -1;
168}
169
170u8 iwl_mvm_mac80211_idx_to_hwrate(const struct iwl_fw *fw, int rate_idx)
171{
172 if (iwl_fw_lookup_cmd_ver(fw, TX_CMD, 0) > 8)
173 /* In the new rate legacy rates are indexed:
174 * 0 - 3 for CCK and 0 - 7 for OFDM.
175 */
176 return (rate_idx >= IWL_FIRST_OFDM_RATE ?
177 rate_idx - IWL_FIRST_OFDM_RATE :
178 rate_idx);
179
180 return iwl_fw_rate_idx_to_plcp(rate_idx);
181}
182
183u8 iwl_mvm_mac80211_ac_to_ucode_ac(enum ieee80211_ac_numbers ac)
184{
185 static const u8 mac80211_ac_to_ucode_ac[] = {
186 AC_VO,
187 AC_VI,
188 AC_BE,
189 AC_BK
190 };
191
192 return mac80211_ac_to_ucode_ac[ac];
193}
194
195void iwl_mvm_rx_fw_error(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb)
196{
197 struct iwl_rx_packet *pkt = rxb_addr(rxb);
198 struct iwl_error_resp *err_resp = (void *)pkt->data;
199
200 IWL_ERR(mvm, "FW Error notification: type 0x%08X cmd_id 0x%02X\n",
201 le32_to_cpu(err_resp->error_type), err_resp->cmd_id);
202 IWL_ERR(mvm, "FW Error notification: seq 0x%04X service 0x%08X\n",
203 le16_to_cpu(err_resp->bad_cmd_seq_num),
204 le32_to_cpu(err_resp->error_service));
205 IWL_ERR(mvm, "FW Error notification: timestamp 0x%016llX\n",
206 le64_to_cpu(err_resp->timestamp));
207}
208
209/*
210 * Returns the first antenna as ANT_[ABC], as defined in iwl-config.h.
211 * The parameter should also be a combination of ANT_[ABC].
212 */
213u8 first_antenna(u8 mask)
214{
215 BUILD_BUG_ON(ANT_A != BIT(0)); /* using ffs is wrong if not */
216 if (WARN_ON_ONCE(!mask)) /* ffs will return 0 if mask is zeroed */
217 return BIT(0);
218 return BIT(ffs(mask) - 1);
219}
220
221#define MAX_ANT_NUM 2
222/*
223 * Toggles between TX antennas to send the probe request on.
224 * Receives the bitmask of valid TX antennas and the *index* used
225 * for the last TX, and returns the next valid *index* to use.
226 * In order to set it in the tx_cmd, must do BIT(idx).
227 */
228u8 iwl_mvm_next_antenna(struct iwl_mvm *mvm, u8 valid, u8 last_idx)
229{
230 u8 ind = last_idx;
231 int i;
232
233 for (i = 0; i < MAX_ANT_NUM; i++) {
234 ind = (ind + 1) % MAX_ANT_NUM;
235 if (valid & BIT(ind))
236 return ind;
237 }
238
239 WARN_ONCE(1, "Failed to toggle between antennas 0x%x", valid);
240 return last_idx;
241}
242
243/**
244 * iwl_mvm_send_lq_cmd() - Send link quality command
245 * @mvm: Driver data.
246 * @lq: Link quality command to send.
247 *
248 * The link quality command is sent as the last step of station creation.
249 * This is the special case in which init is set and we call a callback in
250 * this case to clear the state indicating that station creation is in
251 * progress.
252 */
253int iwl_mvm_send_lq_cmd(struct iwl_mvm *mvm, struct iwl_lq_cmd *lq)
254{
255 struct iwl_host_cmd cmd = {
256 .id = LQ_CMD,
257 .len = { sizeof(struct iwl_lq_cmd), },
258 .flags = CMD_ASYNC,
259 .data = { lq, },
260 };
261
262 if (WARN_ON(lq->sta_id == IWL_MVM_INVALID_STA ||
263 iwl_mvm_has_tlc_offload(mvm)))
264 return -EINVAL;
265
266 return iwl_mvm_send_cmd(mvm, &cmd);
267}
268
269/**
270 * iwl_mvm_update_smps - Get a request to change the SMPS mode
271 * @mvm: Driver data.
272 * @vif: Pointer to the ieee80211_vif structure
273 * @req_type: The part of the driver who call for a change.
274 * @smps_request: The request to change the SMPS mode.
275 * @link_id: for MLO link_id, otherwise 0 (deflink)
276 *
277 * Get a requst to change the SMPS mode,
278 * and change it according to all other requests in the driver.
279 */
280void iwl_mvm_update_smps(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
281 enum iwl_mvm_smps_type_request req_type,
282 enum ieee80211_smps_mode smps_request,
283 unsigned int link_id)
284{
285 struct iwl_mvm_vif *mvmvif;
286 enum ieee80211_smps_mode smps_mode = IEEE80211_SMPS_AUTOMATIC;
287 int i;
288
289 lockdep_assert_held(&mvm->mutex);
290
291 /* SMPS is irrelevant for NICs that don't have at least 2 RX antenna */
292 if (num_of_ant(iwl_mvm_get_valid_rx_ant(mvm)) == 1)
293 return;
294
295 if (vif->type != NL80211_IFTYPE_STATION)
296 return;
297
298 mvmvif = iwl_mvm_vif_from_mac80211(vif);
299
300 if (WARN_ON_ONCE(!mvmvif->link[link_id]))
301 return;
302
303 mvmvif->link[link_id]->smps_requests[req_type] = smps_request;
304 for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++) {
305 if (mvmvif->link[link_id]->smps_requests[i] ==
306 IEEE80211_SMPS_STATIC) {
307 smps_mode = IEEE80211_SMPS_STATIC;
308 break;
309 }
310 if (mvmvif->link[link_id]->smps_requests[i] ==
311 IEEE80211_SMPS_DYNAMIC)
312 smps_mode = IEEE80211_SMPS_DYNAMIC;
313 }
314
315 /* SMPS is disabled in eSR */
316 if (mvmvif->esr_active)
317 smps_mode = IEEE80211_SMPS_OFF;
318
319 ieee80211_request_smps(vif, link_id, smps_mode);
320}
321
322void iwl_mvm_update_smps_on_active_links(struct iwl_mvm *mvm,
323 struct ieee80211_vif *vif,
324 enum iwl_mvm_smps_type_request req_type,
325 enum ieee80211_smps_mode smps_request)
326{
327 struct ieee80211_bss_conf *link_conf;
328 unsigned int link_id;
329
330 rcu_read_lock();
331 for_each_vif_active_link(vif, link_conf, link_id)
332 iwl_mvm_update_smps(mvm, vif, req_type, smps_request,
333 link_id);
334 rcu_read_unlock();
335}
336
337static bool iwl_wait_stats_complete(struct iwl_notif_wait_data *notif_wait,
338 struct iwl_rx_packet *pkt, void *data)
339{
340 WARN_ON(pkt->hdr.cmd != STATISTICS_NOTIFICATION);
341
342 return true;
343}
344
345static int iwl_mvm_request_system_statistics(struct iwl_mvm *mvm, bool clear,
346 u8 cmd_ver)
347{
348 struct iwl_system_statistics_cmd system_cmd = {
349 .cfg_mask = clear ?
350 cpu_to_le32(IWL_STATS_CFG_FLG_ON_DEMAND_NTFY_MSK) :
351 cpu_to_le32(IWL_STATS_CFG_FLG_RESET_MSK |
352 IWL_STATS_CFG_FLG_ON_DEMAND_NTFY_MSK),
353 .type_id_mask = cpu_to_le32(IWL_STATS_NTFY_TYPE_ID_OPER |
354 IWL_STATS_NTFY_TYPE_ID_OPER_PART1),
355 };
356 struct iwl_host_cmd cmd = {
357 .id = WIDE_ID(SYSTEM_GROUP, SYSTEM_STATISTICS_CMD),
358 .len[0] = sizeof(system_cmd),
359 .data[0] = &system_cmd,
360 };
361 struct iwl_notification_wait stats_wait;
362 static const u16 stats_complete[] = {
363 WIDE_ID(SYSTEM_GROUP, SYSTEM_STATISTICS_END_NOTIF),
364 };
365 int ret;
366
367 if (cmd_ver != 1) {
368 IWL_FW_CHECK_FAILED(mvm,
369 "Invalid system statistics command version:%d\n",
370 cmd_ver);
371 return -EOPNOTSUPP;
372 }
373
374 iwl_init_notification_wait(&mvm->notif_wait, &stats_wait,
375 stats_complete, ARRAY_SIZE(stats_complete),
376 NULL, NULL);
377
378 mvm->statistics_clear = clear;
379 ret = iwl_mvm_send_cmd(mvm, &cmd);
380 if (ret) {
381 iwl_remove_notification(&mvm->notif_wait, &stats_wait);
382 return ret;
383 }
384
385 /* 500ms for OPERATIONAL, PART1 and END notification should be enough
386 * for FW to collect data from all LMACs and send
387 * STATISTICS_NOTIFICATION to host
388 */
389 ret = iwl_wait_notification(&mvm->notif_wait, &stats_wait, HZ / 2);
390 if (ret)
391 return ret;
392
393 if (clear)
394 iwl_mvm_accu_radio_stats(mvm);
395
396 return ret;
397}
398
399int iwl_mvm_request_statistics(struct iwl_mvm *mvm, bool clear)
400{
401 struct iwl_statistics_cmd scmd = {
402 .flags = clear ? cpu_to_le32(IWL_STATISTICS_FLG_CLEAR) : 0,
403 };
404
405 struct iwl_host_cmd cmd = {
406 .id = STATISTICS_CMD,
407 .len[0] = sizeof(scmd),
408 .data[0] = &scmd,
409 };
410 u8 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw,
411 WIDE_ID(SYSTEM_GROUP,
412 SYSTEM_STATISTICS_CMD),
413 IWL_FW_CMD_VER_UNKNOWN);
414 int ret;
415
416 if (cmd_ver != IWL_FW_CMD_VER_UNKNOWN)
417 return iwl_mvm_request_system_statistics(mvm, clear, cmd_ver);
418
419 /* From version 15 - STATISTICS_NOTIFICATION, the reply for
420 * STATISTICS_CMD is empty, and the response is with
421 * STATISTICS_NOTIFICATION notification
422 */
423 if (iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP,
424 STATISTICS_NOTIFICATION, 0) < 15) {
425 cmd.flags = CMD_WANT_SKB;
426
427 ret = iwl_mvm_send_cmd(mvm, &cmd);
428 if (ret)
429 return ret;
430
431 iwl_mvm_handle_rx_statistics(mvm, cmd.resp_pkt);
432 iwl_free_resp(&cmd);
433 } else {
434 struct iwl_notification_wait stats_wait;
435 static const u16 stats_complete[] = {
436 STATISTICS_NOTIFICATION,
437 };
438
439 iwl_init_notification_wait(&mvm->notif_wait, &stats_wait,
440 stats_complete, ARRAY_SIZE(stats_complete),
441 iwl_wait_stats_complete, NULL);
442
443 ret = iwl_mvm_send_cmd(mvm, &cmd);
444 if (ret) {
445 iwl_remove_notification(&mvm->notif_wait, &stats_wait);
446 return ret;
447 }
448
449 /* 200ms should be enough for FW to collect data from all
450 * LMACs and send STATISTICS_NOTIFICATION to host
451 */
452 ret = iwl_wait_notification(&mvm->notif_wait, &stats_wait, HZ / 5);
453 if (ret)
454 return ret;
455 }
456
457 if (clear)
458 iwl_mvm_accu_radio_stats(mvm);
459
460 return 0;
461}
462
463void iwl_mvm_accu_radio_stats(struct iwl_mvm *mvm)
464{
465 mvm->accu_radio_stats.rx_time += mvm->radio_stats.rx_time;
466 mvm->accu_radio_stats.tx_time += mvm->radio_stats.tx_time;
467 mvm->accu_radio_stats.on_time_rf += mvm->radio_stats.on_time_rf;
468 mvm->accu_radio_stats.on_time_scan += mvm->radio_stats.on_time_scan;
469}
470
471struct iwl_mvm_diversity_iter_data {
472 struct iwl_mvm_phy_ctxt *ctxt;
473 bool result;
474};
475
476static void iwl_mvm_diversity_iter(void *_data, u8 *mac,
477 struct ieee80211_vif *vif)
478{
479 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
480 struct iwl_mvm_diversity_iter_data *data = _data;
481 int i, link_id;
482
483 for_each_mvm_vif_valid_link(mvmvif, link_id) {
484 struct iwl_mvm_vif_link_info *link_info = mvmvif->link[link_id];
485
486 if (link_info->phy_ctxt != data->ctxt)
487 continue;
488
489 for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++) {
490 if (link_info->smps_requests[i] == IEEE80211_SMPS_STATIC ||
491 link_info->smps_requests[i] == IEEE80211_SMPS_DYNAMIC) {
492 data->result = false;
493 break;
494 }
495 }
496 }
497}
498
499bool iwl_mvm_rx_diversity_allowed(struct iwl_mvm *mvm,
500 struct iwl_mvm_phy_ctxt *ctxt)
501{
502 struct iwl_mvm_diversity_iter_data data = {
503 .ctxt = ctxt,
504 .result = true,
505 };
506
507 lockdep_assert_held(&mvm->mutex);
508
509 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)
510 return false;
511
512 if (num_of_ant(iwl_mvm_get_valid_rx_ant(mvm)) == 1)
513 return false;
514
515 if (mvm->cfg->rx_with_siso_diversity)
516 return false;
517
518 ieee80211_iterate_active_interfaces_atomic(
519 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
520 iwl_mvm_diversity_iter, &data);
521
522 return data.result;
523}
524
525void iwl_mvm_send_low_latency_cmd(struct iwl_mvm *mvm,
526 bool low_latency, u16 mac_id)
527{
528 struct iwl_mac_low_latency_cmd cmd = {
529 .mac_id = cpu_to_le32(mac_id)
530 };
531
532 if (!fw_has_capa(&mvm->fw->ucode_capa,
533 IWL_UCODE_TLV_CAPA_DYNAMIC_QUOTA))
534 return;
535
536 if (low_latency) {
537 /* currently we don't care about the direction */
538 cmd.low_latency_rx = 1;
539 cmd.low_latency_tx = 1;
540 }
541
542 if (iwl_mvm_send_cmd_pdu(mvm, WIDE_ID(MAC_CONF_GROUP, LOW_LATENCY_CMD),
543 0, sizeof(cmd), &cmd))
544 IWL_ERR(mvm, "Failed to send low latency command\n");
545}
546
547int iwl_mvm_update_low_latency(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
548 bool low_latency,
549 enum iwl_mvm_low_latency_cause cause)
550{
551 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
552 int res;
553 bool prev;
554
555 lockdep_assert_held(&mvm->mutex);
556
557 prev = iwl_mvm_vif_low_latency(mvmvif);
558 iwl_mvm_vif_set_low_latency(mvmvif, low_latency, cause);
559
560 low_latency = iwl_mvm_vif_low_latency(mvmvif);
561
562 if (low_latency == prev)
563 return 0;
564
565 iwl_mvm_send_low_latency_cmd(mvm, low_latency, mvmvif->id);
566
567 res = iwl_mvm_update_quotas(mvm, false, NULL);
568 if (res)
569 return res;
570
571 iwl_mvm_bt_coex_vif_change(mvm);
572
573 return iwl_mvm_power_update_mac(mvm);
574}
575
576struct iwl_mvm_low_latency_iter {
577 bool result;
578 bool result_per_band[NUM_NL80211_BANDS];
579};
580
581static void iwl_mvm_ll_iter(void *_data, u8 *mac, struct ieee80211_vif *vif)
582{
583 struct iwl_mvm_low_latency_iter *result = _data;
584 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
585 enum nl80211_band band;
586
587 if (iwl_mvm_vif_low_latency(mvmvif)) {
588 result->result = true;
589
590 if (!mvmvif->deflink.phy_ctxt)
591 return;
592
593 band = mvmvif->deflink.phy_ctxt->channel->band;
594 result->result_per_band[band] = true;
595 }
596}
597
598bool iwl_mvm_low_latency(struct iwl_mvm *mvm)
599{
600 struct iwl_mvm_low_latency_iter data = {};
601
602 ieee80211_iterate_active_interfaces_atomic(
603 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
604 iwl_mvm_ll_iter, &data);
605
606 return data.result;
607}
608
609bool iwl_mvm_low_latency_band(struct iwl_mvm *mvm, enum nl80211_band band)
610{
611 struct iwl_mvm_low_latency_iter data = {};
612
613 ieee80211_iterate_active_interfaces_atomic(
614 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
615 iwl_mvm_ll_iter, &data);
616
617 return data.result_per_band[band];
618}
619
620struct iwl_bss_iter_data {
621 struct ieee80211_vif *vif;
622 bool error;
623};
624
625static void iwl_mvm_bss_iface_iterator(void *_data, u8 *mac,
626 struct ieee80211_vif *vif)
627{
628 struct iwl_bss_iter_data *data = _data;
629
630 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p)
631 return;
632
633 if (data->vif) {
634 data->error = true;
635 return;
636 }
637
638 data->vif = vif;
639}
640
641struct ieee80211_vif *iwl_mvm_get_bss_vif(struct iwl_mvm *mvm)
642{
643 struct iwl_bss_iter_data bss_iter_data = {};
644
645 ieee80211_iterate_active_interfaces_atomic(
646 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
647 iwl_mvm_bss_iface_iterator, &bss_iter_data);
648
649 if (bss_iter_data.error) {
650 IWL_ERR(mvm, "More than one managed interface active!\n");
651 return ERR_PTR(-EINVAL);
652 }
653
654 return bss_iter_data.vif;
655}
656
657struct iwl_bss_find_iter_data {
658 struct ieee80211_vif *vif;
659 u32 macid;
660};
661
662static void iwl_mvm_bss_find_iface_iterator(void *_data, u8 *mac,
663 struct ieee80211_vif *vif)
664{
665 struct iwl_bss_find_iter_data *data = _data;
666 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
667
668 if (mvmvif->id == data->macid)
669 data->vif = vif;
670}
671
672struct ieee80211_vif *iwl_mvm_get_vif_by_macid(struct iwl_mvm *mvm, u32 macid)
673{
674 struct iwl_bss_find_iter_data data = {
675 .macid = macid,
676 };
677
678 lockdep_assert_held(&mvm->mutex);
679
680 ieee80211_iterate_active_interfaces_atomic(
681 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
682 iwl_mvm_bss_find_iface_iterator, &data);
683
684 return data.vif;
685}
686
687struct iwl_sta_iter_data {
688 bool assoc;
689};
690
691static void iwl_mvm_sta_iface_iterator(void *_data, u8 *mac,
692 struct ieee80211_vif *vif)
693{
694 struct iwl_sta_iter_data *data = _data;
695
696 if (vif->type != NL80211_IFTYPE_STATION)
697 return;
698
699 if (vif->cfg.assoc)
700 data->assoc = true;
701}
702
703bool iwl_mvm_is_vif_assoc(struct iwl_mvm *mvm)
704{
705 struct iwl_sta_iter_data data = {
706 .assoc = false,
707 };
708
709 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
710 IEEE80211_IFACE_ITER_NORMAL,
711 iwl_mvm_sta_iface_iterator,
712 &data);
713 return data.assoc;
714}
715
716unsigned int iwl_mvm_get_wd_timeout(struct iwl_mvm *mvm,
717 struct ieee80211_vif *vif,
718 bool tdls, bool cmd_q)
719{
720 struct iwl_fw_dbg_trigger_tlv *trigger;
721 struct iwl_fw_dbg_trigger_txq_timer *txq_timer;
722 unsigned int default_timeout = cmd_q ?
723 IWL_DEF_WD_TIMEOUT :
724 mvm->trans->trans_cfg->base_params->wd_timeout;
725
726 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_TXQ_TIMERS)) {
727 /*
728 * We can't know when the station is asleep or awake, so we
729 * must disable the queue hang detection.
730 */
731 if (fw_has_capa(&mvm->fw->ucode_capa,
732 IWL_UCODE_TLV_CAPA_STA_PM_NOTIF) &&
733 vif && vif->type == NL80211_IFTYPE_AP)
734 return IWL_WATCHDOG_DISABLED;
735 return default_timeout;
736 }
737
738 trigger = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_TXQ_TIMERS);
739 txq_timer = (void *)trigger->data;
740
741 if (tdls)
742 return le32_to_cpu(txq_timer->tdls);
743
744 if (cmd_q)
745 return le32_to_cpu(txq_timer->command_queue);
746
747 if (WARN_ON(!vif))
748 return default_timeout;
749
750 switch (ieee80211_vif_type_p2p(vif)) {
751 case NL80211_IFTYPE_ADHOC:
752 return le32_to_cpu(txq_timer->ibss);
753 case NL80211_IFTYPE_STATION:
754 return le32_to_cpu(txq_timer->bss);
755 case NL80211_IFTYPE_AP:
756 return le32_to_cpu(txq_timer->softap);
757 case NL80211_IFTYPE_P2P_CLIENT:
758 return le32_to_cpu(txq_timer->p2p_client);
759 case NL80211_IFTYPE_P2P_GO:
760 return le32_to_cpu(txq_timer->p2p_go);
761 case NL80211_IFTYPE_P2P_DEVICE:
762 return le32_to_cpu(txq_timer->p2p_device);
763 case NL80211_IFTYPE_MONITOR:
764 return default_timeout;
765 default:
766 WARN_ON(1);
767 return mvm->trans->trans_cfg->base_params->wd_timeout;
768 }
769}
770
771void iwl_mvm_connection_loss(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
772 const char *errmsg)
773{
774 struct iwl_fw_dbg_trigger_tlv *trig;
775 struct iwl_fw_dbg_trigger_mlme *trig_mlme;
776
777 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif),
778 FW_DBG_TRIGGER_MLME);
779 if (!trig)
780 goto out;
781
782 trig_mlme = (void *)trig->data;
783
784 if (trig_mlme->stop_connection_loss &&
785 --trig_mlme->stop_connection_loss)
786 goto out;
787
788 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, "%s", errmsg);
789
790out:
791 ieee80211_connection_loss(vif);
792}
793
794void iwl_mvm_event_frame_timeout_callback(struct iwl_mvm *mvm,
795 struct ieee80211_vif *vif,
796 const struct ieee80211_sta *sta,
797 u16 tid)
798{
799 struct iwl_fw_dbg_trigger_tlv *trig;
800 struct iwl_fw_dbg_trigger_ba *ba_trig;
801
802 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif),
803 FW_DBG_TRIGGER_BA);
804 if (!trig)
805 return;
806
807 ba_trig = (void *)trig->data;
808
809 if (!(le16_to_cpu(ba_trig->frame_timeout) & BIT(tid)))
810 return;
811
812 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig,
813 "Frame from %pM timed out, tid %d",
814 sta->addr, tid);
815}
816
817u8 iwl_mvm_tcm_load_percentage(u32 airtime, u32 elapsed)
818{
819 if (!elapsed)
820 return 0;
821
822 return (100 * airtime / elapsed) / USEC_PER_MSEC;
823}
824
825static enum iwl_mvm_traffic_load
826iwl_mvm_tcm_load(struct iwl_mvm *mvm, u32 airtime, unsigned long elapsed)
827{
828 u8 load = iwl_mvm_tcm_load_percentage(airtime, elapsed);
829
830 if (load > IWL_MVM_TCM_LOAD_HIGH_THRESH)
831 return IWL_MVM_TRAFFIC_HIGH;
832 if (load > IWL_MVM_TCM_LOAD_MEDIUM_THRESH)
833 return IWL_MVM_TRAFFIC_MEDIUM;
834
835 return IWL_MVM_TRAFFIC_LOW;
836}
837
838static void iwl_mvm_tcm_iter(void *_data, u8 *mac, struct ieee80211_vif *vif)
839{
840 struct iwl_mvm *mvm = _data;
841 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
842 bool low_latency, prev = mvmvif->low_latency & LOW_LATENCY_TRAFFIC;
843
844 if (mvmvif->id >= NUM_MAC_INDEX_DRIVER)
845 return;
846
847 low_latency = mvm->tcm.result.low_latency[mvmvif->id];
848
849 if (!mvm->tcm.result.change[mvmvif->id] &&
850 prev == low_latency) {
851 iwl_mvm_update_quotas(mvm, false, NULL);
852 return;
853 }
854
855 if (prev != low_latency) {
856 /* this sends traffic load and updates quota as well */
857 iwl_mvm_update_low_latency(mvm, vif, low_latency,
858 LOW_LATENCY_TRAFFIC);
859 } else {
860 iwl_mvm_update_quotas(mvm, false, NULL);
861 }
862}
863
864static void iwl_mvm_tcm_results(struct iwl_mvm *mvm)
865{
866 mutex_lock(&mvm->mutex);
867
868 ieee80211_iterate_active_interfaces(
869 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
870 iwl_mvm_tcm_iter, mvm);
871
872 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN))
873 iwl_mvm_config_scan(mvm);
874
875 mutex_unlock(&mvm->mutex);
876}
877
878static void iwl_mvm_tcm_uapsd_nonagg_detected_wk(struct work_struct *wk)
879{
880 struct iwl_mvm *mvm;
881 struct iwl_mvm_vif *mvmvif;
882 struct ieee80211_vif *vif;
883
884 mvmvif = container_of(wk, struct iwl_mvm_vif,
885 uapsd_nonagg_detected_wk.work);
886 vif = container_of((void *)mvmvif, struct ieee80211_vif, drv_priv);
887 mvm = mvmvif->mvm;
888
889 if (mvm->tcm.data[mvmvif->id].opened_rx_ba_sessions)
890 return;
891
892 /* remember that this AP is broken */
893 memcpy(mvm->uapsd_noagg_bssids[mvm->uapsd_noagg_bssid_write_idx].addr,
894 vif->bss_conf.bssid, ETH_ALEN);
895 mvm->uapsd_noagg_bssid_write_idx++;
896 if (mvm->uapsd_noagg_bssid_write_idx >= IWL_MVM_UAPSD_NOAGG_LIST_LEN)
897 mvm->uapsd_noagg_bssid_write_idx = 0;
898
899 iwl_mvm_connection_loss(mvm, vif,
900 "AP isn't using AMPDU with uAPSD enabled");
901}
902
903static void iwl_mvm_uapsd_agg_disconnect(struct iwl_mvm *mvm,
904 struct ieee80211_vif *vif)
905{
906 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
907
908 if (vif->type != NL80211_IFTYPE_STATION)
909 return;
910
911 if (!vif->cfg.assoc)
912 return;
913
914 if (!mvmvif->deflink.queue_params[IEEE80211_AC_VO].uapsd &&
915 !mvmvif->deflink.queue_params[IEEE80211_AC_VI].uapsd &&
916 !mvmvif->deflink.queue_params[IEEE80211_AC_BE].uapsd &&
917 !mvmvif->deflink.queue_params[IEEE80211_AC_BK].uapsd)
918 return;
919
920 if (mvm->tcm.data[mvmvif->id].uapsd_nonagg_detect.detected)
921 return;
922
923 mvm->tcm.data[mvmvif->id].uapsd_nonagg_detect.detected = true;
924 IWL_INFO(mvm,
925 "detected AP should do aggregation but isn't, likely due to U-APSD\n");
926 schedule_delayed_work(&mvmvif->uapsd_nonagg_detected_wk,
927 15 * HZ);
928}
929
930static void iwl_mvm_check_uapsd_agg_expected_tpt(struct iwl_mvm *mvm,
931 unsigned int elapsed,
932 int mac)
933{
934 u64 bytes = mvm->tcm.data[mac].uapsd_nonagg_detect.rx_bytes;
935 u64 tpt;
936 unsigned long rate;
937 struct ieee80211_vif *vif;
938
939 rate = ewma_rate_read(&mvm->tcm.data[mac].uapsd_nonagg_detect.rate);
940
941 if (!rate || mvm->tcm.data[mac].opened_rx_ba_sessions ||
942 mvm->tcm.data[mac].uapsd_nonagg_detect.detected)
943 return;
944
945 if (iwl_mvm_has_new_rx_api(mvm)) {
946 tpt = 8 * bytes; /* kbps */
947 do_div(tpt, elapsed);
948 rate *= 1000; /* kbps */
949 if (tpt < 22 * rate / 100)
950 return;
951 } else {
952 /*
953 * the rate here is actually the threshold, in 100Kbps units,
954 * so do the needed conversion from bytes to 100Kbps:
955 * 100kb = bits / (100 * 1000),
956 * 100kbps = 100kb / (msecs / 1000) ==
957 * (bits / (100 * 1000)) / (msecs / 1000) ==
958 * bits / (100 * msecs)
959 */
960 tpt = (8 * bytes);
961 do_div(tpt, elapsed * 100);
962 if (tpt < rate)
963 return;
964 }
965
966 rcu_read_lock();
967 vif = rcu_dereference(mvm->vif_id_to_mac[mac]);
968 if (vif)
969 iwl_mvm_uapsd_agg_disconnect(mvm, vif);
970 rcu_read_unlock();
971}
972
973static void iwl_mvm_tcm_iterator(void *_data, u8 *mac,
974 struct ieee80211_vif *vif)
975{
976 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
977 u32 *band = _data;
978
979 if (!mvmvif->deflink.phy_ctxt)
980 return;
981
982 band[mvmvif->id] = mvmvif->deflink.phy_ctxt->channel->band;
983}
984
985static unsigned long iwl_mvm_calc_tcm_stats(struct iwl_mvm *mvm,
986 unsigned long ts,
987 bool handle_uapsd)
988{
989 unsigned int elapsed = jiffies_to_msecs(ts - mvm->tcm.ts);
990 unsigned int uapsd_elapsed =
991 jiffies_to_msecs(ts - mvm->tcm.uapsd_nonagg_ts);
992 u32 total_airtime = 0;
993 u32 band_airtime[NUM_NL80211_BANDS] = {0};
994 u32 band[NUM_MAC_INDEX_DRIVER] = {0};
995 int ac, mac, i;
996 bool low_latency = false;
997 enum iwl_mvm_traffic_load load, band_load;
998 bool handle_ll = time_after(ts, mvm->tcm.ll_ts + MVM_LL_PERIOD);
999
1000 if (handle_ll)
1001 mvm->tcm.ll_ts = ts;
1002 if (handle_uapsd)
1003 mvm->tcm.uapsd_nonagg_ts = ts;
1004
1005 mvm->tcm.result.elapsed = elapsed;
1006
1007 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
1008 IEEE80211_IFACE_ITER_NORMAL,
1009 iwl_mvm_tcm_iterator,
1010 &band);
1011
1012 for (mac = 0; mac < NUM_MAC_INDEX_DRIVER; mac++) {
1013 struct iwl_mvm_tcm_mac *mdata = &mvm->tcm.data[mac];
1014 u32 vo_vi_pkts = 0;
1015 u32 airtime = mdata->rx.airtime + mdata->tx.airtime;
1016
1017 total_airtime += airtime;
1018 band_airtime[band[mac]] += airtime;
1019
1020 load = iwl_mvm_tcm_load(mvm, airtime, elapsed);
1021 mvm->tcm.result.change[mac] = load != mvm->tcm.result.load[mac];
1022 mvm->tcm.result.load[mac] = load;
1023 mvm->tcm.result.airtime[mac] = airtime;
1024
1025 for (ac = IEEE80211_AC_VO; ac <= IEEE80211_AC_VI; ac++)
1026 vo_vi_pkts += mdata->rx.pkts[ac] +
1027 mdata->tx.pkts[ac];
1028
1029 /* enable immediately with enough packets but defer disabling */
1030 if (vo_vi_pkts > IWL_MVM_TCM_LOWLAT_ENABLE_THRESH)
1031 mvm->tcm.result.low_latency[mac] = true;
1032 else if (handle_ll)
1033 mvm->tcm.result.low_latency[mac] = false;
1034
1035 if (handle_ll) {
1036 /* clear old data */
1037 memset(&mdata->rx.pkts, 0, sizeof(mdata->rx.pkts));
1038 memset(&mdata->tx.pkts, 0, sizeof(mdata->tx.pkts));
1039 }
1040 low_latency |= mvm->tcm.result.low_latency[mac];
1041
1042 if (!mvm->tcm.result.low_latency[mac] && handle_uapsd)
1043 iwl_mvm_check_uapsd_agg_expected_tpt(mvm, uapsd_elapsed,
1044 mac);
1045 /* clear old data */
1046 if (handle_uapsd)
1047 mdata->uapsd_nonagg_detect.rx_bytes = 0;
1048 memset(&mdata->rx.airtime, 0, sizeof(mdata->rx.airtime));
1049 memset(&mdata->tx.airtime, 0, sizeof(mdata->tx.airtime));
1050 }
1051
1052 load = iwl_mvm_tcm_load(mvm, total_airtime, elapsed);
1053 mvm->tcm.result.global_load = load;
1054
1055 for (i = 0; i < NUM_NL80211_BANDS; i++) {
1056 band_load = iwl_mvm_tcm_load(mvm, band_airtime[i], elapsed);
1057 mvm->tcm.result.band_load[i] = band_load;
1058 }
1059
1060 /*
1061 * If the current load isn't low we need to force re-evaluation
1062 * in the TCM period, so that we can return to low load if there
1063 * was no traffic at all (and thus iwl_mvm_recalc_tcm didn't get
1064 * triggered by traffic).
1065 */
1066 if (load != IWL_MVM_TRAFFIC_LOW)
1067 return MVM_TCM_PERIOD;
1068 /*
1069 * If low-latency is active we need to force re-evaluation after
1070 * (the longer) MVM_LL_PERIOD, so that we can disable low-latency
1071 * when there's no traffic at all.
1072 */
1073 if (low_latency)
1074 return MVM_LL_PERIOD;
1075 /*
1076 * Otherwise, we don't need to run the work struct because we're
1077 * in the default "idle" state - traffic indication is low (which
1078 * also covers the "no traffic" case) and low-latency is disabled
1079 * so there's no state that may need to be disabled when there's
1080 * no traffic at all.
1081 *
1082 * Note that this has no impact on the regular scheduling of the
1083 * updates triggered by traffic - those happen whenever one of the
1084 * two timeouts expire (if there's traffic at all.)
1085 */
1086 return 0;
1087}
1088
1089void iwl_mvm_recalc_tcm(struct iwl_mvm *mvm)
1090{
1091 unsigned long ts = jiffies;
1092 bool handle_uapsd =
1093 time_after(ts, mvm->tcm.uapsd_nonagg_ts +
1094 msecs_to_jiffies(IWL_MVM_UAPSD_NONAGG_PERIOD));
1095
1096 spin_lock(&mvm->tcm.lock);
1097 if (mvm->tcm.paused || !time_after(ts, mvm->tcm.ts + MVM_TCM_PERIOD)) {
1098 spin_unlock(&mvm->tcm.lock);
1099 return;
1100 }
1101 spin_unlock(&mvm->tcm.lock);
1102
1103 if (handle_uapsd && iwl_mvm_has_new_rx_api(mvm)) {
1104 mutex_lock(&mvm->mutex);
1105 if (iwl_mvm_request_statistics(mvm, true))
1106 handle_uapsd = false;
1107 mutex_unlock(&mvm->mutex);
1108 }
1109
1110 spin_lock(&mvm->tcm.lock);
1111 /* re-check if somebody else won the recheck race */
1112 if (!mvm->tcm.paused && time_after(ts, mvm->tcm.ts + MVM_TCM_PERIOD)) {
1113 /* calculate statistics */
1114 unsigned long work_delay = iwl_mvm_calc_tcm_stats(mvm, ts,
1115 handle_uapsd);
1116
1117 /* the memset needs to be visible before the timestamp */
1118 smp_mb();
1119 mvm->tcm.ts = ts;
1120 if (work_delay)
1121 schedule_delayed_work(&mvm->tcm.work, work_delay);
1122 }
1123 spin_unlock(&mvm->tcm.lock);
1124
1125 iwl_mvm_tcm_results(mvm);
1126}
1127
1128void iwl_mvm_tcm_work(struct work_struct *work)
1129{
1130 struct delayed_work *delayed_work = to_delayed_work(work);
1131 struct iwl_mvm *mvm = container_of(delayed_work, struct iwl_mvm,
1132 tcm.work);
1133
1134 iwl_mvm_recalc_tcm(mvm);
1135}
1136
1137void iwl_mvm_pause_tcm(struct iwl_mvm *mvm, bool with_cancel)
1138{
1139 spin_lock_bh(&mvm->tcm.lock);
1140 mvm->tcm.paused = true;
1141 spin_unlock_bh(&mvm->tcm.lock);
1142 if (with_cancel)
1143 cancel_delayed_work_sync(&mvm->tcm.work);
1144}
1145
1146void iwl_mvm_resume_tcm(struct iwl_mvm *mvm)
1147{
1148 int mac;
1149 bool low_latency = false;
1150
1151 spin_lock_bh(&mvm->tcm.lock);
1152 mvm->tcm.ts = jiffies;
1153 mvm->tcm.ll_ts = jiffies;
1154 for (mac = 0; mac < NUM_MAC_INDEX_DRIVER; mac++) {
1155 struct iwl_mvm_tcm_mac *mdata = &mvm->tcm.data[mac];
1156
1157 memset(&mdata->rx.pkts, 0, sizeof(mdata->rx.pkts));
1158 memset(&mdata->tx.pkts, 0, sizeof(mdata->tx.pkts));
1159 memset(&mdata->rx.airtime, 0, sizeof(mdata->rx.airtime));
1160 memset(&mdata->tx.airtime, 0, sizeof(mdata->tx.airtime));
1161
1162 if (mvm->tcm.result.low_latency[mac])
1163 low_latency = true;
1164 }
1165 /* The TCM data needs to be reset before "paused" flag changes */
1166 smp_mb();
1167 mvm->tcm.paused = false;
1168
1169 /*
1170 * if the current load is not low or low latency is active, force
1171 * re-evaluation to cover the case of no traffic.
1172 */
1173 if (mvm->tcm.result.global_load > IWL_MVM_TRAFFIC_LOW)
1174 schedule_delayed_work(&mvm->tcm.work, MVM_TCM_PERIOD);
1175 else if (low_latency)
1176 schedule_delayed_work(&mvm->tcm.work, MVM_LL_PERIOD);
1177
1178 spin_unlock_bh(&mvm->tcm.lock);
1179}
1180
1181void iwl_mvm_tcm_add_vif(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1182{
1183 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1184
1185 INIT_DELAYED_WORK(&mvmvif->uapsd_nonagg_detected_wk,
1186 iwl_mvm_tcm_uapsd_nonagg_detected_wk);
1187}
1188
1189void iwl_mvm_tcm_rm_vif(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1190{
1191 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1192
1193 cancel_delayed_work_sync(&mvmvif->uapsd_nonagg_detected_wk);
1194}
1195
1196u32 iwl_mvm_get_systime(struct iwl_mvm *mvm)
1197{
1198 u32 reg_addr = DEVICE_SYSTEM_TIME_REG;
1199
1200 if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_22000 &&
1201 mvm->trans->cfg->gp2_reg_addr)
1202 reg_addr = mvm->trans->cfg->gp2_reg_addr;
1203
1204 return iwl_read_prph(mvm->trans, reg_addr);
1205}
1206
1207void iwl_mvm_get_sync_time(struct iwl_mvm *mvm, int clock_type,
1208 u32 *gp2, u64 *boottime, ktime_t *realtime)
1209{
1210 bool ps_disabled;
1211
1212 lockdep_assert_held(&mvm->mutex);
1213
1214 /* Disable power save when reading GP2 */
1215 ps_disabled = mvm->ps_disabled;
1216 if (!ps_disabled) {
1217 mvm->ps_disabled = true;
1218 iwl_mvm_power_update_device(mvm);
1219 }
1220
1221 *gp2 = iwl_mvm_get_systime(mvm);
1222
1223 if (clock_type == CLOCK_BOOTTIME && boottime)
1224 *boottime = ktime_get_boottime_ns();
1225 else if (clock_type == CLOCK_REALTIME && realtime)
1226 *realtime = ktime_get_real();
1227
1228 if (!ps_disabled) {
1229 mvm->ps_disabled = ps_disabled;
1230 iwl_mvm_power_update_device(mvm);
1231 }
1232}
1233
1234/* Find if at least two links from different vifs use same channel
1235 * FIXME: consider having a refcount array in struct iwl_mvm_vif for
1236 * used phy_ctxt ids.
1237 */
1238bool iwl_mvm_have_links_same_channel(struct iwl_mvm_vif *vif1,
1239 struct iwl_mvm_vif *vif2)
1240{
1241 unsigned int i, j;
1242
1243 for_each_mvm_vif_valid_link(vif1, i) {
1244 for_each_mvm_vif_valid_link(vif2, j) {
1245 if (vif1->link[i]->phy_ctxt == vif2->link[j]->phy_ctxt)
1246 return true;
1247 }
1248 }
1249
1250 return false;
1251}
1252
1253bool iwl_mvm_vif_is_active(struct iwl_mvm_vif *mvmvif)
1254{
1255 unsigned int i;
1256
1257 /* FIXME: can it fail when phy_ctxt is assigned? */
1258 for_each_mvm_vif_valid_link(mvmvif, i) {
1259 if (mvmvif->link[i]->phy_ctxt &&
1260 mvmvif->link[i]->phy_ctxt->id < NUM_PHY_CTX)
1261 return true;
1262 }
1263
1264 return false;
1265}
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 - 2014 Intel Mobile Communications GmbH
10 * Copyright (C) 2015 Intel Deutschland GmbH
11 *
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of version 2 of the GNU General Public License as
14 * published by the Free Software Foundation.
15 *
16 * This program is distributed in the hope that it will be useful, but
17 * WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 * General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
24 * USA
25 *
26 * The full GNU General Public License is included in this distribution
27 * in the file called COPYING.
28 *
29 * Contact Information:
30 * Intel Linux Wireless <linuxwifi@intel.com>
31 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
32 *
33 * BSD LICENSE
34 *
35 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
36 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
37 * All rights reserved.
38 *
39 * Redistribution and use in source and binary forms, with or without
40 * modification, are permitted provided that the following conditions
41 * are met:
42 *
43 * * Redistributions of source code must retain the above copyright
44 * notice, this list of conditions and the following disclaimer.
45 * * Redistributions in binary form must reproduce the above copyright
46 * notice, this list of conditions and the following disclaimer in
47 * the documentation and/or other materials provided with the
48 * distribution.
49 * * Neither the name Intel Corporation nor the names of its
50 * contributors may be used to endorse or promote products derived
51 * from this software without specific prior written permission.
52 *
53 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
54 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
55 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
56 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
57 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
58 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
59 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
60 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
61 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
62 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
63 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
64 *
65 *****************************************************************************/
66#include <net/mac80211.h>
67
68#include "iwl-debug.h"
69#include "iwl-io.h"
70#include "iwl-prph.h"
71#include "fw-dbg.h"
72#include "mvm.h"
73#include "fw-api-rs.h"
74
75/*
76 * Will return 0 even if the cmd failed when RFKILL is asserted unless
77 * CMD_WANT_SKB is set in cmd->flags.
78 */
79int iwl_mvm_send_cmd(struct iwl_mvm *mvm, struct iwl_host_cmd *cmd)
80{
81 int ret;
82
83#if defined(CONFIG_IWLWIFI_DEBUGFS) && defined(CONFIG_PM_SLEEP)
84 if (WARN_ON(mvm->d3_test_active))
85 return -EIO;
86#endif
87
88 /*
89 * Synchronous commands from this op-mode must hold
90 * the mutex, this ensures we don't try to send two
91 * (or more) synchronous commands at a time.
92 */
93 if (!(cmd->flags & CMD_ASYNC))
94 lockdep_assert_held(&mvm->mutex);
95
96 ret = iwl_trans_send_cmd(mvm->trans, cmd);
97
98 /*
99 * If the caller wants the SKB, then don't hide any problems, the
100 * caller might access the response buffer which will be NULL if
101 * the command failed.
102 */
103 if (cmd->flags & CMD_WANT_SKB)
104 return ret;
105
106 /* Silently ignore failures if RFKILL is asserted */
107 if (!ret || ret == -ERFKILL)
108 return 0;
109 return ret;
110}
111
112int iwl_mvm_send_cmd_pdu(struct iwl_mvm *mvm, u32 id,
113 u32 flags, u16 len, const void *data)
114{
115 struct iwl_host_cmd cmd = {
116 .id = id,
117 .len = { len, },
118 .data = { data, },
119 .flags = flags,
120 };
121
122 return iwl_mvm_send_cmd(mvm, &cmd);
123}
124
125/*
126 * We assume that the caller set the status to the success value
127 */
128int iwl_mvm_send_cmd_status(struct iwl_mvm *mvm, struct iwl_host_cmd *cmd,
129 u32 *status)
130{
131 struct iwl_rx_packet *pkt;
132 struct iwl_cmd_response *resp;
133 int ret, resp_len;
134
135 lockdep_assert_held(&mvm->mutex);
136
137#if defined(CONFIG_IWLWIFI_DEBUGFS) && defined(CONFIG_PM_SLEEP)
138 if (WARN_ON(mvm->d3_test_active))
139 return -EIO;
140#endif
141
142 /*
143 * Only synchronous commands can wait for status,
144 * we use WANT_SKB so the caller can't.
145 */
146 if (WARN_ONCE(cmd->flags & (CMD_ASYNC | CMD_WANT_SKB),
147 "cmd flags %x", cmd->flags))
148 return -EINVAL;
149
150 cmd->flags |= CMD_WANT_SKB;
151
152 ret = iwl_trans_send_cmd(mvm->trans, cmd);
153 if (ret == -ERFKILL) {
154 /*
155 * The command failed because of RFKILL, don't update
156 * the status, leave it as success and return 0.
157 */
158 return 0;
159 } else if (ret) {
160 return ret;
161 }
162
163 pkt = cmd->resp_pkt;
164 /* Can happen if RFKILL is asserted */
165 if (!pkt) {
166 ret = 0;
167 goto out_free_resp;
168 }
169
170 resp_len = iwl_rx_packet_payload_len(pkt);
171 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
172 ret = -EIO;
173 goto out_free_resp;
174 }
175
176 resp = (void *)pkt->data;
177 *status = le32_to_cpu(resp->status);
178 out_free_resp:
179 iwl_free_resp(cmd);
180 return ret;
181}
182
183/*
184 * We assume that the caller set the status to the sucess value
185 */
186int iwl_mvm_send_cmd_pdu_status(struct iwl_mvm *mvm, u32 id, u16 len,
187 const void *data, u32 *status)
188{
189 struct iwl_host_cmd cmd = {
190 .id = id,
191 .len = { len, },
192 .data = { data, },
193 };
194
195 return iwl_mvm_send_cmd_status(mvm, &cmd, status);
196}
197
198#define IWL_DECLARE_RATE_INFO(r) \
199 [IWL_RATE_##r##M_INDEX] = IWL_RATE_##r##M_PLCP
200
201/*
202 * Translate from fw_rate_index (IWL_RATE_XXM_INDEX) to PLCP
203 */
204static const u8 fw_rate_idx_to_plcp[IWL_RATE_COUNT] = {
205 IWL_DECLARE_RATE_INFO(1),
206 IWL_DECLARE_RATE_INFO(2),
207 IWL_DECLARE_RATE_INFO(5),
208 IWL_DECLARE_RATE_INFO(11),
209 IWL_DECLARE_RATE_INFO(6),
210 IWL_DECLARE_RATE_INFO(9),
211 IWL_DECLARE_RATE_INFO(12),
212 IWL_DECLARE_RATE_INFO(18),
213 IWL_DECLARE_RATE_INFO(24),
214 IWL_DECLARE_RATE_INFO(36),
215 IWL_DECLARE_RATE_INFO(48),
216 IWL_DECLARE_RATE_INFO(54),
217};
218
219int iwl_mvm_legacy_rate_to_mac80211_idx(u32 rate_n_flags,
220 enum ieee80211_band band)
221{
222 int rate = rate_n_flags & RATE_LEGACY_RATE_MSK;
223 int idx;
224 int band_offset = 0;
225
226 /* Legacy rate format, search for match in table */
227 if (band == IEEE80211_BAND_5GHZ)
228 band_offset = IWL_FIRST_OFDM_RATE;
229 for (idx = band_offset; idx < IWL_RATE_COUNT_LEGACY; idx++)
230 if (fw_rate_idx_to_plcp[idx] == rate)
231 return idx - band_offset;
232
233 return -1;
234}
235
236u8 iwl_mvm_mac80211_idx_to_hwrate(int rate_idx)
237{
238 /* Get PLCP rate for tx_cmd->rate_n_flags */
239 return fw_rate_idx_to_plcp[rate_idx];
240}
241
242void iwl_mvm_rx_fw_error(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb)
243{
244 struct iwl_rx_packet *pkt = rxb_addr(rxb);
245 struct iwl_error_resp *err_resp = (void *)pkt->data;
246
247 IWL_ERR(mvm, "FW Error notification: type 0x%08X cmd_id 0x%02X\n",
248 le32_to_cpu(err_resp->error_type), err_resp->cmd_id);
249 IWL_ERR(mvm, "FW Error notification: seq 0x%04X service 0x%08X\n",
250 le16_to_cpu(err_resp->bad_cmd_seq_num),
251 le32_to_cpu(err_resp->error_service));
252 IWL_ERR(mvm, "FW Error notification: timestamp 0x%16llX\n",
253 le64_to_cpu(err_resp->timestamp));
254}
255
256/*
257 * Returns the first antenna as ANT_[ABC], as defined in iwl-config.h.
258 * The parameter should also be a combination of ANT_[ABC].
259 */
260u8 first_antenna(u8 mask)
261{
262 BUILD_BUG_ON(ANT_A != BIT(0)); /* using ffs is wrong if not */
263 if (WARN_ON_ONCE(!mask)) /* ffs will return 0 if mask is zeroed */
264 return BIT(0);
265 return BIT(ffs(mask) - 1);
266}
267
268/*
269 * Toggles between TX antennas to send the probe request on.
270 * Receives the bitmask of valid TX antennas and the *index* used
271 * for the last TX, and returns the next valid *index* to use.
272 * In order to set it in the tx_cmd, must do BIT(idx).
273 */
274u8 iwl_mvm_next_antenna(struct iwl_mvm *mvm, u8 valid, u8 last_idx)
275{
276 u8 ind = last_idx;
277 int i;
278
279 for (i = 0; i < RATE_MCS_ANT_NUM; i++) {
280 ind = (ind + 1) % RATE_MCS_ANT_NUM;
281 if (valid & BIT(ind))
282 return ind;
283 }
284
285 WARN_ONCE(1, "Failed to toggle between antennas 0x%x", valid);
286 return last_idx;
287}
288
289static const struct {
290 const char *name;
291 u8 num;
292} advanced_lookup[] = {
293 { "NMI_INTERRUPT_WDG", 0x34 },
294 { "SYSASSERT", 0x35 },
295 { "UCODE_VERSION_MISMATCH", 0x37 },
296 { "BAD_COMMAND", 0x38 },
297 { "NMI_INTERRUPT_DATA_ACTION_PT", 0x3C },
298 { "FATAL_ERROR", 0x3D },
299 { "NMI_TRM_HW_ERR", 0x46 },
300 { "NMI_INTERRUPT_TRM", 0x4C },
301 { "NMI_INTERRUPT_BREAK_POINT", 0x54 },
302 { "NMI_INTERRUPT_WDG_RXF_FULL", 0x5C },
303 { "NMI_INTERRUPT_WDG_NO_RBD_RXF_FULL", 0x64 },
304 { "NMI_INTERRUPT_HOST", 0x66 },
305 { "NMI_INTERRUPT_ACTION_PT", 0x7C },
306 { "NMI_INTERRUPT_UNKNOWN", 0x84 },
307 { "NMI_INTERRUPT_INST_ACTION_PT", 0x86 },
308 { "ADVANCED_SYSASSERT", 0 },
309};
310
311static const char *desc_lookup(u32 num)
312{
313 int i;
314
315 for (i = 0; i < ARRAY_SIZE(advanced_lookup) - 1; i++)
316 if (advanced_lookup[i].num == num)
317 return advanced_lookup[i].name;
318
319 /* No entry matches 'num', so it is the last: ADVANCED_SYSASSERT */
320 return advanced_lookup[i].name;
321}
322
323/*
324 * Note: This structure is read from the device with IO accesses,
325 * and the reading already does the endian conversion. As it is
326 * read with u32-sized accesses, any members with a different size
327 * need to be ordered correctly though!
328 */
329struct iwl_error_event_table_v1 {
330 u32 valid; /* (nonzero) valid, (0) log is empty */
331 u32 error_id; /* type of error */
332 u32 pc; /* program counter */
333 u32 blink1; /* branch link */
334 u32 blink2; /* branch link */
335 u32 ilink1; /* interrupt link */
336 u32 ilink2; /* interrupt link */
337 u32 data1; /* error-specific data */
338 u32 data2; /* error-specific data */
339 u32 data3; /* error-specific data */
340 u32 bcon_time; /* beacon timer */
341 u32 tsf_low; /* network timestamp function timer */
342 u32 tsf_hi; /* network timestamp function timer */
343 u32 gp1; /* GP1 timer register */
344 u32 gp2; /* GP2 timer register */
345 u32 gp3; /* GP3 timer register */
346 u32 ucode_ver; /* uCode version */
347 u32 hw_ver; /* HW Silicon version */
348 u32 brd_ver; /* HW board version */
349 u32 log_pc; /* log program counter */
350 u32 frame_ptr; /* frame pointer */
351 u32 stack_ptr; /* stack pointer */
352 u32 hcmd; /* last host command header */
353 u32 isr0; /* isr status register LMPM_NIC_ISR0:
354 * rxtx_flag */
355 u32 isr1; /* isr status register LMPM_NIC_ISR1:
356 * host_flag */
357 u32 isr2; /* isr status register LMPM_NIC_ISR2:
358 * enc_flag */
359 u32 isr3; /* isr status register LMPM_NIC_ISR3:
360 * time_flag */
361 u32 isr4; /* isr status register LMPM_NIC_ISR4:
362 * wico interrupt */
363 u32 isr_pref; /* isr status register LMPM_NIC_PREF_STAT */
364 u32 wait_event; /* wait event() caller address */
365 u32 l2p_control; /* L2pControlField */
366 u32 l2p_duration; /* L2pDurationField */
367 u32 l2p_mhvalid; /* L2pMhValidBits */
368 u32 l2p_addr_match; /* L2pAddrMatchStat */
369 u32 lmpm_pmg_sel; /* indicate which clocks are turned on
370 * (LMPM_PMG_SEL) */
371 u32 u_timestamp; /* indicate when the date and time of the
372 * compilation */
373 u32 flow_handler; /* FH read/write pointers, RX credit */
374} __packed /* LOG_ERROR_TABLE_API_S_VER_1 */;
375
376struct iwl_error_event_table {
377 u32 valid; /* (nonzero) valid, (0) log is empty */
378 u32 error_id; /* type of error */
379 u32 trm_hw_status0; /* TRM HW status */
380 u32 trm_hw_status1; /* TRM HW status */
381 u32 blink2; /* branch link */
382 u32 ilink1; /* interrupt link */
383 u32 ilink2; /* interrupt link */
384 u32 data1; /* error-specific data */
385 u32 data2; /* error-specific data */
386 u32 data3; /* error-specific data */
387 u32 bcon_time; /* beacon timer */
388 u32 tsf_low; /* network timestamp function timer */
389 u32 tsf_hi; /* network timestamp function timer */
390 u32 gp1; /* GP1 timer register */
391 u32 gp2; /* GP2 timer register */
392 u32 fw_rev_type; /* firmware revision type */
393 u32 major; /* uCode version major */
394 u32 minor; /* uCode version minor */
395 u32 hw_ver; /* HW Silicon version */
396 u32 brd_ver; /* HW board version */
397 u32 log_pc; /* log program counter */
398 u32 frame_ptr; /* frame pointer */
399 u32 stack_ptr; /* stack pointer */
400 u32 hcmd; /* last host command header */
401 u32 isr0; /* isr status register LMPM_NIC_ISR0:
402 * rxtx_flag */
403 u32 isr1; /* isr status register LMPM_NIC_ISR1:
404 * host_flag */
405 u32 isr2; /* isr status register LMPM_NIC_ISR2:
406 * enc_flag */
407 u32 isr3; /* isr status register LMPM_NIC_ISR3:
408 * time_flag */
409 u32 isr4; /* isr status register LMPM_NIC_ISR4:
410 * wico interrupt */
411 u32 last_cmd_id; /* last HCMD id handled by the firmware */
412 u32 wait_event; /* wait event() caller address */
413 u32 l2p_control; /* L2pControlField */
414 u32 l2p_duration; /* L2pDurationField */
415 u32 l2p_mhvalid; /* L2pMhValidBits */
416 u32 l2p_addr_match; /* L2pAddrMatchStat */
417 u32 lmpm_pmg_sel; /* indicate which clocks are turned on
418 * (LMPM_PMG_SEL) */
419 u32 u_timestamp; /* indicate when the date and time of the
420 * compilation */
421 u32 flow_handler; /* FH read/write pointers, RX credit */
422} __packed /* LOG_ERROR_TABLE_API_S_VER_3 */;
423
424/*
425 * UMAC error struct - relevant starting from family 8000 chip.
426 * Note: This structure is read from the device with IO accesses,
427 * and the reading already does the endian conversion. As it is
428 * read with u32-sized accesses, any members with a different size
429 * need to be ordered correctly though!
430 */
431struct iwl_umac_error_event_table {
432 u32 valid; /* (nonzero) valid, (0) log is empty */
433 u32 error_id; /* type of error */
434 u32 blink1; /* branch link */
435 u32 blink2; /* branch link */
436 u32 ilink1; /* interrupt link */
437 u32 ilink2; /* interrupt link */
438 u32 data1; /* error-specific data */
439 u32 data2; /* error-specific data */
440 u32 data3; /* error-specific data */
441 u32 umac_major;
442 u32 umac_minor;
443 u32 frame_pointer; /* core register 27*/
444 u32 stack_pointer; /* core register 28 */
445 u32 cmd_header; /* latest host cmd sent to UMAC */
446 u32 nic_isr_pref; /* ISR status register */
447} __packed;
448
449#define ERROR_START_OFFSET (1 * sizeof(u32))
450#define ERROR_ELEM_SIZE (7 * sizeof(u32))
451
452static void iwl_mvm_dump_umac_error_log(struct iwl_mvm *mvm)
453{
454 struct iwl_trans *trans = mvm->trans;
455 struct iwl_umac_error_event_table table;
456 u32 base;
457
458 base = mvm->umac_error_event_table;
459
460 if (base < 0x800000) {
461 IWL_ERR(mvm,
462 "Not valid error log pointer 0x%08X for %s uCode\n",
463 base,
464 (mvm->cur_ucode == IWL_UCODE_INIT)
465 ? "Init" : "RT");
466 return;
467 }
468
469 iwl_trans_read_mem_bytes(trans, base, &table, sizeof(table));
470
471 if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) {
472 IWL_ERR(trans, "Start IWL Error Log Dump:\n");
473 IWL_ERR(trans, "Status: 0x%08lX, count: %d\n",
474 mvm->status, table.valid);
475 }
476
477 IWL_ERR(mvm, "0x%08X | %s\n", table.error_id,
478 desc_lookup(table.error_id));
479 IWL_ERR(mvm, "0x%08X | umac branchlink1\n", table.blink1);
480 IWL_ERR(mvm, "0x%08X | umac branchlink2\n", table.blink2);
481 IWL_ERR(mvm, "0x%08X | umac interruptlink1\n", table.ilink1);
482 IWL_ERR(mvm, "0x%08X | umac interruptlink2\n", table.ilink2);
483 IWL_ERR(mvm, "0x%08X | umac data1\n", table.data1);
484 IWL_ERR(mvm, "0x%08X | umac data2\n", table.data2);
485 IWL_ERR(mvm, "0x%08X | umac data3\n", table.data3);
486 IWL_ERR(mvm, "0x%08X | umac major\n", table.umac_major);
487 IWL_ERR(mvm, "0x%08X | umac minor\n", table.umac_minor);
488 IWL_ERR(mvm, "0x%08X | frame pointer\n", table.frame_pointer);
489 IWL_ERR(mvm, "0x%08X | stack pointer\n", table.stack_pointer);
490 IWL_ERR(mvm, "0x%08X | last host cmd\n", table.cmd_header);
491 IWL_ERR(mvm, "0x%08X | isr status reg\n", table.nic_isr_pref);
492}
493
494static void iwl_mvm_dump_nic_error_log_old(struct iwl_mvm *mvm)
495{
496 struct iwl_trans *trans = mvm->trans;
497 struct iwl_error_event_table_v1 table;
498 u32 base;
499
500 base = mvm->error_event_table;
501 if (mvm->cur_ucode == IWL_UCODE_INIT) {
502 if (!base)
503 base = mvm->fw->init_errlog_ptr;
504 } else {
505 if (!base)
506 base = mvm->fw->inst_errlog_ptr;
507 }
508
509 if (base < 0x800000) {
510 IWL_ERR(mvm,
511 "Not valid error log pointer 0x%08X for %s uCode\n",
512 base,
513 (mvm->cur_ucode == IWL_UCODE_INIT)
514 ? "Init" : "RT");
515 return;
516 }
517
518 iwl_trans_read_mem_bytes(trans, base, &table, sizeof(table));
519
520 if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) {
521 IWL_ERR(trans, "Start IWL Error Log Dump:\n");
522 IWL_ERR(trans, "Status: 0x%08lX, count: %d\n",
523 mvm->status, table.valid);
524 }
525
526 /* Do not change this output - scripts rely on it */
527
528 IWL_ERR(mvm, "Loaded firmware version: %s\n", mvm->fw->fw_version);
529
530 trace_iwlwifi_dev_ucode_error(trans->dev, table.error_id, table.tsf_low,
531 table.data1, table.data2, table.data3,
532 table.blink2, table.ilink1, table.ilink2,
533 table.bcon_time, table.gp1, table.gp2,
534 table.gp3, table.ucode_ver, 0,
535 table.hw_ver, table.brd_ver);
536 IWL_ERR(mvm, "0x%08X | %-28s\n", table.error_id,
537 desc_lookup(table.error_id));
538 IWL_ERR(mvm, "0x%08X | uPc\n", table.pc);
539 IWL_ERR(mvm, "0x%08X | branchlink1\n", table.blink1);
540 IWL_ERR(mvm, "0x%08X | branchlink2\n", table.blink2);
541 IWL_ERR(mvm, "0x%08X | interruptlink1\n", table.ilink1);
542 IWL_ERR(mvm, "0x%08X | interruptlink2\n", table.ilink2);
543 IWL_ERR(mvm, "0x%08X | data1\n", table.data1);
544 IWL_ERR(mvm, "0x%08X | data2\n", table.data2);
545 IWL_ERR(mvm, "0x%08X | data3\n", table.data3);
546 IWL_ERR(mvm, "0x%08X | beacon time\n", table.bcon_time);
547 IWL_ERR(mvm, "0x%08X | tsf low\n", table.tsf_low);
548 IWL_ERR(mvm, "0x%08X | tsf hi\n", table.tsf_hi);
549 IWL_ERR(mvm, "0x%08X | time gp1\n", table.gp1);
550 IWL_ERR(mvm, "0x%08X | time gp2\n", table.gp2);
551 IWL_ERR(mvm, "0x%08X | time gp3\n", table.gp3);
552 IWL_ERR(mvm, "0x%08X | uCode version\n", table.ucode_ver);
553 IWL_ERR(mvm, "0x%08X | hw version\n", table.hw_ver);
554 IWL_ERR(mvm, "0x%08X | board version\n", table.brd_ver);
555 IWL_ERR(mvm, "0x%08X | hcmd\n", table.hcmd);
556 IWL_ERR(mvm, "0x%08X | isr0\n", table.isr0);
557 IWL_ERR(mvm, "0x%08X | isr1\n", table.isr1);
558 IWL_ERR(mvm, "0x%08X | isr2\n", table.isr2);
559 IWL_ERR(mvm, "0x%08X | isr3\n", table.isr3);
560 IWL_ERR(mvm, "0x%08X | isr4\n", table.isr4);
561 IWL_ERR(mvm, "0x%08X | isr_pref\n", table.isr_pref);
562 IWL_ERR(mvm, "0x%08X | wait_event\n", table.wait_event);
563 IWL_ERR(mvm, "0x%08X | l2p_control\n", table.l2p_control);
564 IWL_ERR(mvm, "0x%08X | l2p_duration\n", table.l2p_duration);
565 IWL_ERR(mvm, "0x%08X | l2p_mhvalid\n", table.l2p_mhvalid);
566 IWL_ERR(mvm, "0x%08X | l2p_addr_match\n", table.l2p_addr_match);
567 IWL_ERR(mvm, "0x%08X | lmpm_pmg_sel\n", table.lmpm_pmg_sel);
568 IWL_ERR(mvm, "0x%08X | timestamp\n", table.u_timestamp);
569 IWL_ERR(mvm, "0x%08X | flow_handler\n", table.flow_handler);
570
571 if (mvm->support_umac_log)
572 iwl_mvm_dump_umac_error_log(mvm);
573}
574
575void iwl_mvm_dump_nic_error_log(struct iwl_mvm *mvm)
576{
577 struct iwl_trans *trans = mvm->trans;
578 struct iwl_error_event_table table;
579 u32 base;
580
581 if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_NEW_VERSION)) {
582 iwl_mvm_dump_nic_error_log_old(mvm);
583 return;
584 }
585
586 base = mvm->error_event_table;
587 if (mvm->cur_ucode == IWL_UCODE_INIT) {
588 if (!base)
589 base = mvm->fw->init_errlog_ptr;
590 } else {
591 if (!base)
592 base = mvm->fw->inst_errlog_ptr;
593 }
594
595 if (base < 0x800000) {
596 IWL_ERR(mvm,
597 "Not valid error log pointer 0x%08X for %s uCode\n",
598 base,
599 (mvm->cur_ucode == IWL_UCODE_INIT)
600 ? "Init" : "RT");
601 return;
602 }
603
604 iwl_trans_read_mem_bytes(trans, base, &table, sizeof(table));
605
606 if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) {
607 IWL_ERR(trans, "Start IWL Error Log Dump:\n");
608 IWL_ERR(trans, "Status: 0x%08lX, count: %d\n",
609 mvm->status, table.valid);
610 }
611
612 /* Do not change this output - scripts rely on it */
613
614 IWL_ERR(mvm, "Loaded firmware version: %s\n", mvm->fw->fw_version);
615
616 trace_iwlwifi_dev_ucode_error(trans->dev, table.error_id, table.tsf_low,
617 table.data1, table.data2, table.data3,
618 table.blink2, table.ilink1,
619 table.ilink2, table.bcon_time, table.gp1,
620 table.gp2, table.fw_rev_type, table.major,
621 table.minor, table.hw_ver, table.brd_ver);
622 IWL_ERR(mvm, "0x%08X | %-28s\n", table.error_id,
623 desc_lookup(table.error_id));
624 IWL_ERR(mvm, "0x%08X | trm_hw_status0\n", table.trm_hw_status0);
625 IWL_ERR(mvm, "0x%08X | trm_hw_status1\n", table.trm_hw_status1);
626 IWL_ERR(mvm, "0x%08X | branchlink2\n", table.blink2);
627 IWL_ERR(mvm, "0x%08X | interruptlink1\n", table.ilink1);
628 IWL_ERR(mvm, "0x%08X | interruptlink2\n", table.ilink2);
629 IWL_ERR(mvm, "0x%08X | data1\n", table.data1);
630 IWL_ERR(mvm, "0x%08X | data2\n", table.data2);
631 IWL_ERR(mvm, "0x%08X | data3\n", table.data3);
632 IWL_ERR(mvm, "0x%08X | beacon time\n", table.bcon_time);
633 IWL_ERR(mvm, "0x%08X | tsf low\n", table.tsf_low);
634 IWL_ERR(mvm, "0x%08X | tsf hi\n", table.tsf_hi);
635 IWL_ERR(mvm, "0x%08X | time gp1\n", table.gp1);
636 IWL_ERR(mvm, "0x%08X | time gp2\n", table.gp2);
637 IWL_ERR(mvm, "0x%08X | uCode revision type\n", table.fw_rev_type);
638 IWL_ERR(mvm, "0x%08X | uCode version major\n", table.major);
639 IWL_ERR(mvm, "0x%08X | uCode version minor\n", table.minor);
640 IWL_ERR(mvm, "0x%08X | hw version\n", table.hw_ver);
641 IWL_ERR(mvm, "0x%08X | board version\n", table.brd_ver);
642 IWL_ERR(mvm, "0x%08X | hcmd\n", table.hcmd);
643 IWL_ERR(mvm, "0x%08X | isr0\n", table.isr0);
644 IWL_ERR(mvm, "0x%08X | isr1\n", table.isr1);
645 IWL_ERR(mvm, "0x%08X | isr2\n", table.isr2);
646 IWL_ERR(mvm, "0x%08X | isr3\n", table.isr3);
647 IWL_ERR(mvm, "0x%08X | isr4\n", table.isr4);
648 IWL_ERR(mvm, "0x%08X | last cmd Id\n", table.last_cmd_id);
649 IWL_ERR(mvm, "0x%08X | wait_event\n", table.wait_event);
650 IWL_ERR(mvm, "0x%08X | l2p_control\n", table.l2p_control);
651 IWL_ERR(mvm, "0x%08X | l2p_duration\n", table.l2p_duration);
652 IWL_ERR(mvm, "0x%08X | l2p_mhvalid\n", table.l2p_mhvalid);
653 IWL_ERR(mvm, "0x%08X | l2p_addr_match\n", table.l2p_addr_match);
654 IWL_ERR(mvm, "0x%08X | lmpm_pmg_sel\n", table.lmpm_pmg_sel);
655 IWL_ERR(mvm, "0x%08X | timestamp\n", table.u_timestamp);
656 IWL_ERR(mvm, "0x%08X | flow_handler\n", table.flow_handler);
657
658 if (mvm->support_umac_log)
659 iwl_mvm_dump_umac_error_log(mvm);
660}
661
662int iwl_mvm_find_free_queue(struct iwl_mvm *mvm, u8 minq, u8 maxq)
663{
664 int i;
665
666 lockdep_assert_held(&mvm->queue_info_lock);
667
668 for (i = minq; i <= maxq; i++)
669 if (mvm->queue_info[i].hw_queue_refcount == 0 &&
670 !mvm->queue_info[i].setup_reserved)
671 return i;
672
673 return -ENOSPC;
674}
675
676void iwl_mvm_enable_txq(struct iwl_mvm *mvm, int queue, int mac80211_queue,
677 u16 ssn, const struct iwl_trans_txq_scd_cfg *cfg,
678 unsigned int wdg_timeout)
679{
680 bool enable_queue = true;
681
682 spin_lock_bh(&mvm->queue_info_lock);
683
684 /* Make sure this TID isn't already enabled */
685 if (mvm->queue_info[queue].tid_bitmap & BIT(cfg->tid)) {
686 spin_unlock_bh(&mvm->queue_info_lock);
687 IWL_ERR(mvm, "Trying to enable TXQ with existing TID %d\n",
688 cfg->tid);
689 return;
690 }
691
692 /* Update mappings and refcounts */
693 mvm->queue_info[queue].hw_queue_to_mac80211 |= BIT(mac80211_queue);
694 mvm->queue_info[queue].hw_queue_refcount++;
695 if (mvm->queue_info[queue].hw_queue_refcount > 1)
696 enable_queue = false;
697 mvm->queue_info[queue].tid_bitmap |= BIT(cfg->tid);
698
699 IWL_DEBUG_TX_QUEUES(mvm,
700 "Enabling TXQ #%d refcount=%d (mac80211 map:0x%x)\n",
701 queue, mvm->queue_info[queue].hw_queue_refcount,
702 mvm->queue_info[queue].hw_queue_to_mac80211);
703
704 spin_unlock_bh(&mvm->queue_info_lock);
705
706 /* Send the enabling command if we need to */
707 if (enable_queue) {
708 struct iwl_scd_txq_cfg_cmd cmd = {
709 .scd_queue = queue,
710 .enable = 1,
711 .window = cfg->frame_limit,
712 .sta_id = cfg->sta_id,
713 .ssn = cpu_to_le16(ssn),
714 .tx_fifo = cfg->fifo,
715 .aggregate = cfg->aggregate,
716 .tid = cfg->tid,
717 };
718
719 iwl_trans_txq_enable_cfg(mvm->trans, queue, ssn, NULL,
720 wdg_timeout);
721 WARN(iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd),
722 &cmd),
723 "Failed to configure queue %d on FIFO %d\n", queue,
724 cfg->fifo);
725 }
726}
727
728void iwl_mvm_disable_txq(struct iwl_mvm *mvm, int queue, int mac80211_queue,
729 u8 tid, u8 flags)
730{
731 struct iwl_scd_txq_cfg_cmd cmd = {
732 .scd_queue = queue,
733 .enable = 0,
734 };
735 bool remove_mac_queue = true;
736 int ret;
737
738 spin_lock_bh(&mvm->queue_info_lock);
739
740 if (WARN_ON(mvm->queue_info[queue].hw_queue_refcount == 0)) {
741 spin_unlock_bh(&mvm->queue_info_lock);
742 return;
743 }
744
745 mvm->queue_info[queue].tid_bitmap &= ~BIT(tid);
746
747 /*
748 * If there is another TID with the same AC - don't remove the MAC queue
749 * from the mapping
750 */
751 if (tid < IWL_MAX_TID_COUNT) {
752 unsigned long tid_bitmap =
753 mvm->queue_info[queue].tid_bitmap;
754 int ac = tid_to_mac80211_ac[tid];
755 int i;
756
757 for_each_set_bit(i, &tid_bitmap, IWL_MAX_TID_COUNT) {
758 if (tid_to_mac80211_ac[i] == ac)
759 remove_mac_queue = false;
760 }
761 }
762
763 if (remove_mac_queue)
764 mvm->queue_info[queue].hw_queue_to_mac80211 &=
765 ~BIT(mac80211_queue);
766 mvm->queue_info[queue].hw_queue_refcount--;
767
768 cmd.enable = mvm->queue_info[queue].hw_queue_refcount ? 1 : 0;
769
770 IWL_DEBUG_TX_QUEUES(mvm,
771 "Disabling TXQ #%d refcount=%d (mac80211 map:0x%x)\n",
772 queue,
773 mvm->queue_info[queue].hw_queue_refcount,
774 mvm->queue_info[queue].hw_queue_to_mac80211);
775
776 /* If the queue is still enabled - nothing left to do in this func */
777 if (cmd.enable) {
778 spin_unlock_bh(&mvm->queue_info_lock);
779 return;
780 }
781
782 /* Make sure queue info is correct even though we overwrite it */
783 WARN(mvm->queue_info[queue].hw_queue_refcount ||
784 mvm->queue_info[queue].tid_bitmap ||
785 mvm->queue_info[queue].hw_queue_to_mac80211,
786 "TXQ #%d info out-of-sync - refcount=%d, mac map=0x%x, tid=0x%x\n",
787 queue, mvm->queue_info[queue].hw_queue_refcount,
788 mvm->queue_info[queue].hw_queue_to_mac80211,
789 mvm->queue_info[queue].tid_bitmap);
790
791 /* If we are here - the queue is freed and we can zero out these vals */
792 mvm->queue_info[queue].hw_queue_refcount = 0;
793 mvm->queue_info[queue].tid_bitmap = 0;
794 mvm->queue_info[queue].hw_queue_to_mac80211 = 0;
795
796 spin_unlock_bh(&mvm->queue_info_lock);
797
798 iwl_trans_txq_disable(mvm->trans, queue, false);
799 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, flags,
800 sizeof(cmd), &cmd);
801 if (ret)
802 IWL_ERR(mvm, "Failed to disable queue %d (ret=%d)\n",
803 queue, ret);
804}
805
806/**
807 * iwl_mvm_send_lq_cmd() - Send link quality command
808 * @init: This command is sent as part of station initialization right
809 * after station has been added.
810 *
811 * The link quality command is sent as the last step of station creation.
812 * This is the special case in which init is set and we call a callback in
813 * this case to clear the state indicating that station creation is in
814 * progress.
815 */
816int iwl_mvm_send_lq_cmd(struct iwl_mvm *mvm, struct iwl_lq_cmd *lq, bool init)
817{
818 struct iwl_host_cmd cmd = {
819 .id = LQ_CMD,
820 .len = { sizeof(struct iwl_lq_cmd), },
821 .flags = init ? 0 : CMD_ASYNC,
822 .data = { lq, },
823 };
824
825 if (WARN_ON(lq->sta_id == IWL_MVM_STATION_COUNT))
826 return -EINVAL;
827
828 return iwl_mvm_send_cmd(mvm, &cmd);
829}
830
831/**
832 * iwl_mvm_update_smps - Get a request to change the SMPS mode
833 * @req_type: The part of the driver who call for a change.
834 * @smps_requests: The request to change the SMPS mode.
835 *
836 * Get a requst to change the SMPS mode,
837 * and change it according to all other requests in the driver.
838 */
839void iwl_mvm_update_smps(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
840 enum iwl_mvm_smps_type_request req_type,
841 enum ieee80211_smps_mode smps_request)
842{
843 struct iwl_mvm_vif *mvmvif;
844 enum ieee80211_smps_mode smps_mode;
845 int i;
846
847 lockdep_assert_held(&mvm->mutex);
848
849 /* SMPS is irrelevant for NICs that don't have at least 2 RX antenna */
850 if (num_of_ant(iwl_mvm_get_valid_rx_ant(mvm)) == 1)
851 return;
852
853 if (vif->type == NL80211_IFTYPE_AP)
854 smps_mode = IEEE80211_SMPS_OFF;
855 else
856 smps_mode = IEEE80211_SMPS_AUTOMATIC;
857
858 mvmvif = iwl_mvm_vif_from_mac80211(vif);
859 mvmvif->smps_requests[req_type] = smps_request;
860 for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++) {
861 if (mvmvif->smps_requests[i] == IEEE80211_SMPS_STATIC) {
862 smps_mode = IEEE80211_SMPS_STATIC;
863 break;
864 }
865 if (mvmvif->smps_requests[i] == IEEE80211_SMPS_DYNAMIC)
866 smps_mode = IEEE80211_SMPS_DYNAMIC;
867 }
868
869 ieee80211_request_smps(vif, smps_mode);
870}
871
872int iwl_mvm_request_statistics(struct iwl_mvm *mvm, bool clear)
873{
874 struct iwl_statistics_cmd scmd = {
875 .flags = clear ? cpu_to_le32(IWL_STATISTICS_FLG_CLEAR) : 0,
876 };
877 struct iwl_host_cmd cmd = {
878 .id = STATISTICS_CMD,
879 .len[0] = sizeof(scmd),
880 .data[0] = &scmd,
881 .flags = CMD_WANT_SKB,
882 };
883 int ret;
884
885 ret = iwl_mvm_send_cmd(mvm, &cmd);
886 if (ret)
887 return ret;
888
889 iwl_mvm_handle_rx_statistics(mvm, cmd.resp_pkt);
890 iwl_free_resp(&cmd);
891
892 if (clear)
893 iwl_mvm_accu_radio_stats(mvm);
894
895 return 0;
896}
897
898void iwl_mvm_accu_radio_stats(struct iwl_mvm *mvm)
899{
900 mvm->accu_radio_stats.rx_time += mvm->radio_stats.rx_time;
901 mvm->accu_radio_stats.tx_time += mvm->radio_stats.tx_time;
902 mvm->accu_radio_stats.on_time_rf += mvm->radio_stats.on_time_rf;
903 mvm->accu_radio_stats.on_time_scan += mvm->radio_stats.on_time_scan;
904}
905
906static void iwl_mvm_diversity_iter(void *_data, u8 *mac,
907 struct ieee80211_vif *vif)
908{
909 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
910 bool *result = _data;
911 int i;
912
913 for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++) {
914 if (mvmvif->smps_requests[i] == IEEE80211_SMPS_STATIC ||
915 mvmvif->smps_requests[i] == IEEE80211_SMPS_DYNAMIC)
916 *result = false;
917 }
918}
919
920bool iwl_mvm_rx_diversity_allowed(struct iwl_mvm *mvm)
921{
922 bool result = true;
923
924 lockdep_assert_held(&mvm->mutex);
925
926 if (num_of_ant(iwl_mvm_get_valid_rx_ant(mvm)) == 1)
927 return false;
928
929 if (mvm->cfg->rx_with_siso_diversity)
930 return false;
931
932 ieee80211_iterate_active_interfaces_atomic(
933 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
934 iwl_mvm_diversity_iter, &result);
935
936 return result;
937}
938
939int iwl_mvm_update_low_latency(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
940 bool prev)
941{
942 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
943 int res;
944
945 lockdep_assert_held(&mvm->mutex);
946
947 if (iwl_mvm_vif_low_latency(mvmvif) == prev)
948 return 0;
949
950 res = iwl_mvm_update_quotas(mvm, false, NULL);
951 if (res)
952 return res;
953
954 iwl_mvm_bt_coex_vif_change(mvm);
955
956 return iwl_mvm_power_update_mac(mvm);
957}
958
959static void iwl_mvm_ll_iter(void *_data, u8 *mac, struct ieee80211_vif *vif)
960{
961 bool *result = _data;
962
963 if (iwl_mvm_vif_low_latency(iwl_mvm_vif_from_mac80211(vif)))
964 *result = true;
965}
966
967bool iwl_mvm_low_latency(struct iwl_mvm *mvm)
968{
969 bool result = false;
970
971 ieee80211_iterate_active_interfaces_atomic(
972 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
973 iwl_mvm_ll_iter, &result);
974
975 return result;
976}
977
978struct iwl_bss_iter_data {
979 struct ieee80211_vif *vif;
980 bool error;
981};
982
983static void iwl_mvm_bss_iface_iterator(void *_data, u8 *mac,
984 struct ieee80211_vif *vif)
985{
986 struct iwl_bss_iter_data *data = _data;
987
988 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p)
989 return;
990
991 if (data->vif) {
992 data->error = true;
993 return;
994 }
995
996 data->vif = vif;
997}
998
999struct ieee80211_vif *iwl_mvm_get_bss_vif(struct iwl_mvm *mvm)
1000{
1001 struct iwl_bss_iter_data bss_iter_data = {};
1002
1003 ieee80211_iterate_active_interfaces_atomic(
1004 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1005 iwl_mvm_bss_iface_iterator, &bss_iter_data);
1006
1007 if (bss_iter_data.error) {
1008 IWL_ERR(mvm, "More than one managed interface active!\n");
1009 return ERR_PTR(-EINVAL);
1010 }
1011
1012 return bss_iter_data.vif;
1013}
1014
1015unsigned int iwl_mvm_get_wd_timeout(struct iwl_mvm *mvm,
1016 struct ieee80211_vif *vif,
1017 bool tdls, bool cmd_q)
1018{
1019 struct iwl_fw_dbg_trigger_tlv *trigger;
1020 struct iwl_fw_dbg_trigger_txq_timer *txq_timer;
1021 unsigned int default_timeout =
1022 cmd_q ? IWL_DEF_WD_TIMEOUT : mvm->cfg->base_params->wd_timeout;
1023
1024 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_TXQ_TIMERS))
1025 return iwlmvm_mod_params.tfd_q_hang_detect ?
1026 default_timeout : IWL_WATCHDOG_DISABLED;
1027
1028 trigger = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_TXQ_TIMERS);
1029 txq_timer = (void *)trigger->data;
1030
1031 if (tdls)
1032 return le32_to_cpu(txq_timer->tdls);
1033
1034 if (cmd_q)
1035 return le32_to_cpu(txq_timer->command_queue);
1036
1037 if (WARN_ON(!vif))
1038 return default_timeout;
1039
1040 switch (ieee80211_vif_type_p2p(vif)) {
1041 case NL80211_IFTYPE_ADHOC:
1042 return le32_to_cpu(txq_timer->ibss);
1043 case NL80211_IFTYPE_STATION:
1044 return le32_to_cpu(txq_timer->bss);
1045 case NL80211_IFTYPE_AP:
1046 return le32_to_cpu(txq_timer->softap);
1047 case NL80211_IFTYPE_P2P_CLIENT:
1048 return le32_to_cpu(txq_timer->p2p_client);
1049 case NL80211_IFTYPE_P2P_GO:
1050 return le32_to_cpu(txq_timer->p2p_go);
1051 case NL80211_IFTYPE_P2P_DEVICE:
1052 return le32_to_cpu(txq_timer->p2p_device);
1053 default:
1054 WARN_ON(1);
1055 return mvm->cfg->base_params->wd_timeout;
1056 }
1057}
1058
1059void iwl_mvm_connection_loss(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1060 const char *errmsg)
1061{
1062 struct iwl_fw_dbg_trigger_tlv *trig;
1063 struct iwl_fw_dbg_trigger_mlme *trig_mlme;
1064
1065 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_MLME))
1066 goto out;
1067
1068 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_MLME);
1069 trig_mlme = (void *)trig->data;
1070 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
1071 goto out;
1072
1073 if (trig_mlme->stop_connection_loss &&
1074 --trig_mlme->stop_connection_loss)
1075 goto out;
1076
1077 iwl_mvm_fw_dbg_collect_trig(mvm, trig, "%s", errmsg);
1078
1079out:
1080 ieee80211_connection_loss(vif);
1081}