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1// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
2/*
3 * Copyright (C) 2012-2014, 2018-2024 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 *
253 * Returns: an error code indicating success or failure
254 */
255int iwl_mvm_send_lq_cmd(struct iwl_mvm *mvm, struct iwl_lq_cmd *lq)
256{
257 struct iwl_host_cmd cmd = {
258 .id = LQ_CMD,
259 .len = { sizeof(struct iwl_lq_cmd), },
260 .flags = CMD_ASYNC,
261 .data = { lq, },
262 };
263
264 if (WARN_ON(lq->sta_id == IWL_INVALID_STA ||
265 iwl_mvm_has_tlc_offload(mvm)))
266 return -EINVAL;
267
268 return iwl_mvm_send_cmd(mvm, &cmd);
269}
270
271/**
272 * iwl_mvm_update_smps - Get a request to change the SMPS mode
273 * @mvm: Driver data.
274 * @vif: Pointer to the ieee80211_vif structure
275 * @req_type: The part of the driver who call for a change.
276 * @smps_request: The request to change the SMPS mode.
277 * @link_id: for MLO link_id, otherwise 0 (deflink)
278 *
279 * Get a requst to change the SMPS mode,
280 * and change it according to all other requests in the driver.
281 */
282void iwl_mvm_update_smps(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
283 enum iwl_mvm_smps_type_request req_type,
284 enum ieee80211_smps_mode smps_request,
285 unsigned int link_id)
286{
287 struct iwl_mvm_vif *mvmvif;
288 enum ieee80211_smps_mode smps_mode = IEEE80211_SMPS_AUTOMATIC;
289 int i;
290
291 lockdep_assert_held(&mvm->mutex);
292
293 /* SMPS is irrelevant for NICs that don't have at least 2 RX antenna */
294 if (num_of_ant(iwl_mvm_get_valid_rx_ant(mvm)) == 1)
295 return;
296
297 if (vif->type != NL80211_IFTYPE_STATION)
298 return;
299
300 /* SMPS is handled by firmware */
301 if (iwl_mvm_has_rlc_offload(mvm))
302 return;
303
304 mvmvif = iwl_mvm_vif_from_mac80211(vif);
305
306 if (WARN_ON_ONCE(!mvmvif->link[link_id]))
307 return;
308
309 mvmvif->link[link_id]->smps_requests[req_type] = smps_request;
310 for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++) {
311 if (mvmvif->link[link_id]->smps_requests[i] ==
312 IEEE80211_SMPS_STATIC) {
313 smps_mode = IEEE80211_SMPS_STATIC;
314 break;
315 }
316 if (mvmvif->link[link_id]->smps_requests[i] ==
317 IEEE80211_SMPS_DYNAMIC)
318 smps_mode = IEEE80211_SMPS_DYNAMIC;
319 }
320
321 /* SMPS is disabled in eSR */
322 if (mvmvif->esr_active)
323 smps_mode = IEEE80211_SMPS_OFF;
324
325 ieee80211_request_smps(vif, link_id, smps_mode);
326}
327
328void iwl_mvm_update_smps_on_active_links(struct iwl_mvm *mvm,
329 struct ieee80211_vif *vif,
330 enum iwl_mvm_smps_type_request req_type,
331 enum ieee80211_smps_mode smps_request)
332{
333 struct ieee80211_bss_conf *link_conf;
334 unsigned int link_id;
335
336 rcu_read_lock();
337 for_each_vif_active_link(vif, link_conf, link_id)
338 iwl_mvm_update_smps(mvm, vif, req_type, smps_request,
339 link_id);
340 rcu_read_unlock();
341}
342
343static bool iwl_wait_stats_complete(struct iwl_notif_wait_data *notif_wait,
344 struct iwl_rx_packet *pkt, void *data)
345{
346 WARN_ON(pkt->hdr.cmd != STATISTICS_NOTIFICATION);
347
348 return true;
349}
350
351#define PERIODIC_STAT_RATE 5
352
353int iwl_mvm_request_periodic_system_statistics(struct iwl_mvm *mvm, bool enable)
354{
355 u32 flags = enable ? 0 : IWL_STATS_CFG_FLG_DISABLE_NTFY_MSK;
356 u32 type = enable ? (IWL_STATS_NTFY_TYPE_ID_OPER |
357 IWL_STATS_NTFY_TYPE_ID_OPER_PART1) : 0;
358 struct iwl_system_statistics_cmd system_cmd = {
359 .cfg_mask = cpu_to_le32(flags),
360 .config_time_sec = cpu_to_le32(enable ?
361 PERIODIC_STAT_RATE : 0),
362 .type_id_mask = cpu_to_le32(type),
363 };
364
365 return iwl_mvm_send_cmd_pdu(mvm,
366 WIDE_ID(SYSTEM_GROUP,
367 SYSTEM_STATISTICS_CMD),
368 0, sizeof(system_cmd), &system_cmd);
369}
370
371static int iwl_mvm_request_system_statistics(struct iwl_mvm *mvm, bool clear,
372 u8 cmd_ver)
373{
374 struct iwl_system_statistics_cmd system_cmd = {
375 .cfg_mask = clear ?
376 cpu_to_le32(IWL_STATS_CFG_FLG_ON_DEMAND_NTFY_MSK) :
377 cpu_to_le32(IWL_STATS_CFG_FLG_RESET_MSK |
378 IWL_STATS_CFG_FLG_ON_DEMAND_NTFY_MSK),
379 .type_id_mask = cpu_to_le32(IWL_STATS_NTFY_TYPE_ID_OPER |
380 IWL_STATS_NTFY_TYPE_ID_OPER_PART1),
381 };
382 struct iwl_host_cmd cmd = {
383 .id = WIDE_ID(SYSTEM_GROUP, SYSTEM_STATISTICS_CMD),
384 .len[0] = sizeof(system_cmd),
385 .data[0] = &system_cmd,
386 };
387 struct iwl_notification_wait stats_wait;
388 static const u16 stats_complete[] = {
389 WIDE_ID(SYSTEM_GROUP, SYSTEM_STATISTICS_END_NOTIF),
390 };
391 int ret;
392
393 if (cmd_ver != 1) {
394 IWL_FW_CHECK_FAILED(mvm,
395 "Invalid system statistics command version:%d\n",
396 cmd_ver);
397 return -EOPNOTSUPP;
398 }
399
400 iwl_init_notification_wait(&mvm->notif_wait, &stats_wait,
401 stats_complete, ARRAY_SIZE(stats_complete),
402 NULL, NULL);
403
404 mvm->statistics_clear = clear;
405 ret = iwl_mvm_send_cmd(mvm, &cmd);
406 if (ret) {
407 iwl_remove_notification(&mvm->notif_wait, &stats_wait);
408 return ret;
409 }
410
411 /* 500ms for OPERATIONAL, PART1 and END notification should be enough
412 * for FW to collect data from all LMACs and send
413 * STATISTICS_NOTIFICATION to host
414 */
415 ret = iwl_wait_notification(&mvm->notif_wait, &stats_wait, HZ / 2);
416 if (ret)
417 return ret;
418
419 if (clear)
420 iwl_mvm_accu_radio_stats(mvm);
421
422 return ret;
423}
424
425int iwl_mvm_request_statistics(struct iwl_mvm *mvm, bool clear)
426{
427 struct iwl_statistics_cmd scmd = {
428 .flags = clear ? cpu_to_le32(IWL_STATISTICS_FLG_CLEAR) : 0,
429 };
430
431 struct iwl_host_cmd cmd = {
432 .id = STATISTICS_CMD,
433 .len[0] = sizeof(scmd),
434 .data[0] = &scmd,
435 };
436 u8 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw,
437 WIDE_ID(SYSTEM_GROUP,
438 SYSTEM_STATISTICS_CMD),
439 IWL_FW_CMD_VER_UNKNOWN);
440 int ret;
441
442 /*
443 * Don't request statistics during restart, they'll not have any useful
444 * information right after restart, nor is clearing needed
445 */
446 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
447 return 0;
448
449 if (cmd_ver != IWL_FW_CMD_VER_UNKNOWN)
450 return iwl_mvm_request_system_statistics(mvm, clear, cmd_ver);
451
452 /* From version 15 - STATISTICS_NOTIFICATION, the reply for
453 * STATISTICS_CMD is empty, and the response is with
454 * STATISTICS_NOTIFICATION notification
455 */
456 if (iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP,
457 STATISTICS_NOTIFICATION, 0) < 15) {
458 cmd.flags = CMD_WANT_SKB;
459
460 ret = iwl_mvm_send_cmd(mvm, &cmd);
461 if (ret)
462 return ret;
463
464 iwl_mvm_handle_rx_statistics(mvm, cmd.resp_pkt);
465 iwl_free_resp(&cmd);
466 } else {
467 struct iwl_notification_wait stats_wait;
468 static const u16 stats_complete[] = {
469 STATISTICS_NOTIFICATION,
470 };
471
472 iwl_init_notification_wait(&mvm->notif_wait, &stats_wait,
473 stats_complete, ARRAY_SIZE(stats_complete),
474 iwl_wait_stats_complete, NULL);
475
476 ret = iwl_mvm_send_cmd(mvm, &cmd);
477 if (ret) {
478 iwl_remove_notification(&mvm->notif_wait, &stats_wait);
479 return ret;
480 }
481
482 /* 200ms should be enough for FW to collect data from all
483 * LMACs and send STATISTICS_NOTIFICATION to host
484 */
485 ret = iwl_wait_notification(&mvm->notif_wait, &stats_wait, HZ / 5);
486 if (ret)
487 return ret;
488 }
489
490 if (clear)
491 iwl_mvm_accu_radio_stats(mvm);
492
493 return 0;
494}
495
496void iwl_mvm_accu_radio_stats(struct iwl_mvm *mvm)
497{
498 mvm->accu_radio_stats.rx_time += mvm->radio_stats.rx_time;
499 mvm->accu_radio_stats.tx_time += mvm->radio_stats.tx_time;
500 mvm->accu_radio_stats.on_time_rf += mvm->radio_stats.on_time_rf;
501 mvm->accu_radio_stats.on_time_scan += mvm->radio_stats.on_time_scan;
502}
503
504struct iwl_mvm_diversity_iter_data {
505 struct iwl_mvm_phy_ctxt *ctxt;
506 bool result;
507};
508
509static void iwl_mvm_diversity_iter(void *_data, u8 *mac,
510 struct ieee80211_vif *vif)
511{
512 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
513 struct iwl_mvm_diversity_iter_data *data = _data;
514 int i, link_id;
515
516 for_each_mvm_vif_valid_link(mvmvif, link_id) {
517 struct iwl_mvm_vif_link_info *link_info = mvmvif->link[link_id];
518
519 if (link_info->phy_ctxt != data->ctxt)
520 continue;
521
522 for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++) {
523 if (link_info->smps_requests[i] == IEEE80211_SMPS_STATIC ||
524 link_info->smps_requests[i] == IEEE80211_SMPS_DYNAMIC) {
525 data->result = false;
526 break;
527 }
528 }
529 }
530}
531
532bool iwl_mvm_rx_diversity_allowed(struct iwl_mvm *mvm,
533 struct iwl_mvm_phy_ctxt *ctxt)
534{
535 struct iwl_mvm_diversity_iter_data data = {
536 .ctxt = ctxt,
537 .result = true,
538 };
539
540 lockdep_assert_held(&mvm->mutex);
541
542 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)
543 return false;
544
545 if (num_of_ant(iwl_mvm_get_valid_rx_ant(mvm)) == 1)
546 return false;
547
548 if (mvm->cfg->rx_with_siso_diversity)
549 return false;
550
551 ieee80211_iterate_active_interfaces_atomic(
552 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
553 iwl_mvm_diversity_iter, &data);
554
555 return data.result;
556}
557
558void iwl_mvm_send_low_latency_cmd(struct iwl_mvm *mvm,
559 bool low_latency, u16 mac_id)
560{
561 struct iwl_mac_low_latency_cmd cmd = {
562 .mac_id = cpu_to_le32(mac_id)
563 };
564
565 if (!fw_has_capa(&mvm->fw->ucode_capa,
566 IWL_UCODE_TLV_CAPA_DYNAMIC_QUOTA))
567 return;
568
569 if (low_latency) {
570 /* currently we don't care about the direction */
571 cmd.low_latency_rx = 1;
572 cmd.low_latency_tx = 1;
573 }
574
575 if (iwl_mvm_send_cmd_pdu(mvm, WIDE_ID(MAC_CONF_GROUP, LOW_LATENCY_CMD),
576 0, sizeof(cmd), &cmd))
577 IWL_ERR(mvm, "Failed to send low latency command\n");
578}
579
580int iwl_mvm_update_low_latency(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
581 bool low_latency,
582 enum iwl_mvm_low_latency_cause cause)
583{
584 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
585 int res;
586 bool prev;
587
588 lockdep_assert_held(&mvm->mutex);
589
590 prev = iwl_mvm_vif_low_latency(mvmvif);
591 iwl_mvm_vif_set_low_latency(mvmvif, low_latency, cause);
592
593 low_latency = iwl_mvm_vif_low_latency(mvmvif);
594
595 if (low_latency == prev)
596 return 0;
597
598 iwl_mvm_send_low_latency_cmd(mvm, low_latency, mvmvif->id);
599
600 res = iwl_mvm_update_quotas(mvm, false, NULL);
601 if (res)
602 return res;
603
604 iwl_mvm_bt_coex_vif_change(mvm);
605
606 return iwl_mvm_power_update_mac(mvm);
607}
608
609struct iwl_mvm_low_latency_iter {
610 bool result;
611 bool result_per_band[NUM_NL80211_BANDS];
612};
613
614static void iwl_mvm_ll_iter(void *_data, u8 *mac, struct ieee80211_vif *vif)
615{
616 struct iwl_mvm_low_latency_iter *result = _data;
617 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
618 enum nl80211_band band;
619
620 if (iwl_mvm_vif_low_latency(mvmvif)) {
621 result->result = true;
622
623 if (!mvmvif->deflink.phy_ctxt)
624 return;
625
626 band = mvmvif->deflink.phy_ctxt->channel->band;
627 result->result_per_band[band] = true;
628 }
629}
630
631bool iwl_mvm_low_latency(struct iwl_mvm *mvm)
632{
633 struct iwl_mvm_low_latency_iter data = {};
634
635 ieee80211_iterate_active_interfaces_atomic(
636 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
637 iwl_mvm_ll_iter, &data);
638
639 return data.result;
640}
641
642bool iwl_mvm_low_latency_band(struct iwl_mvm *mvm, enum nl80211_band band)
643{
644 struct iwl_mvm_low_latency_iter data = {};
645
646 ieee80211_iterate_active_interfaces_atomic(
647 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
648 iwl_mvm_ll_iter, &data);
649
650 return data.result_per_band[band];
651}
652
653struct iwl_bss_iter_data {
654 struct ieee80211_vif *vif;
655 bool error;
656};
657
658static void iwl_mvm_bss_iface_iterator(void *_data, u8 *mac,
659 struct ieee80211_vif *vif)
660{
661 struct iwl_bss_iter_data *data = _data;
662
663 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p)
664 return;
665
666 if (data->vif) {
667 data->error = true;
668 return;
669 }
670
671 data->vif = vif;
672}
673
674struct ieee80211_vif *iwl_mvm_get_bss_vif(struct iwl_mvm *mvm)
675{
676 struct iwl_bss_iter_data bss_iter_data = {};
677
678 ieee80211_iterate_active_interfaces_atomic(
679 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
680 iwl_mvm_bss_iface_iterator, &bss_iter_data);
681
682 if (bss_iter_data.error)
683 return ERR_PTR(-EINVAL);
684
685 return bss_iter_data.vif;
686}
687
688struct iwl_bss_find_iter_data {
689 struct ieee80211_vif *vif;
690 u32 macid;
691};
692
693static void iwl_mvm_bss_find_iface_iterator(void *_data, u8 *mac,
694 struct ieee80211_vif *vif)
695{
696 struct iwl_bss_find_iter_data *data = _data;
697 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
698
699 if (mvmvif->id == data->macid)
700 data->vif = vif;
701}
702
703struct ieee80211_vif *iwl_mvm_get_vif_by_macid(struct iwl_mvm *mvm, u32 macid)
704{
705 struct iwl_bss_find_iter_data data = {
706 .macid = macid,
707 };
708
709 lockdep_assert_held(&mvm->mutex);
710
711 ieee80211_iterate_active_interfaces_atomic(
712 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
713 iwl_mvm_bss_find_iface_iterator, &data);
714
715 return data.vif;
716}
717
718struct iwl_sta_iter_data {
719 bool assoc;
720};
721
722static void iwl_mvm_sta_iface_iterator(void *_data, u8 *mac,
723 struct ieee80211_vif *vif)
724{
725 struct iwl_sta_iter_data *data = _data;
726
727 if (vif->type != NL80211_IFTYPE_STATION)
728 return;
729
730 if (vif->cfg.assoc)
731 data->assoc = true;
732}
733
734bool iwl_mvm_is_vif_assoc(struct iwl_mvm *mvm)
735{
736 struct iwl_sta_iter_data data = {
737 .assoc = false,
738 };
739
740 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
741 IEEE80211_IFACE_ITER_NORMAL,
742 iwl_mvm_sta_iface_iterator,
743 &data);
744 return data.assoc;
745}
746
747unsigned int iwl_mvm_get_wd_timeout(struct iwl_mvm *mvm,
748 struct ieee80211_vif *vif)
749{
750 unsigned int default_timeout =
751 mvm->trans->trans_cfg->base_params->wd_timeout;
752
753 /*
754 * We can't know when the station is asleep or awake, so we
755 * must disable the queue hang detection.
756 */
757 if (fw_has_capa(&mvm->fw->ucode_capa,
758 IWL_UCODE_TLV_CAPA_STA_PM_NOTIF) &&
759 vif->type == NL80211_IFTYPE_AP)
760 return IWL_WATCHDOG_DISABLED;
761 return default_timeout;
762}
763
764void iwl_mvm_connection_loss(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
765 const char *errmsg)
766{
767 struct iwl_fw_dbg_trigger_tlv *trig;
768 struct iwl_fw_dbg_trigger_mlme *trig_mlme;
769
770 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif),
771 FW_DBG_TRIGGER_MLME);
772 if (!trig)
773 goto out;
774
775 trig_mlme = (void *)trig->data;
776
777 if (trig_mlme->stop_connection_loss &&
778 --trig_mlme->stop_connection_loss)
779 goto out;
780
781 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, "%s", errmsg);
782
783out:
784 ieee80211_connection_loss(vif);
785}
786
787void iwl_mvm_event_frame_timeout_callback(struct iwl_mvm *mvm,
788 struct ieee80211_vif *vif,
789 const struct ieee80211_sta *sta,
790 u16 tid)
791{
792 struct iwl_fw_dbg_trigger_tlv *trig;
793 struct iwl_fw_dbg_trigger_ba *ba_trig;
794
795 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif),
796 FW_DBG_TRIGGER_BA);
797 if (!trig)
798 return;
799
800 ba_trig = (void *)trig->data;
801
802 if (!(le16_to_cpu(ba_trig->frame_timeout) & BIT(tid)))
803 return;
804
805 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig,
806 "Frame from %pM timed out, tid %d",
807 sta->addr, tid);
808}
809
810u8 iwl_mvm_tcm_load_percentage(u32 airtime, u32 elapsed)
811{
812 if (!elapsed)
813 return 0;
814
815 return (100 * airtime / elapsed) / USEC_PER_MSEC;
816}
817
818static enum iwl_mvm_traffic_load
819iwl_mvm_tcm_load(struct iwl_mvm *mvm, u32 airtime, unsigned long elapsed)
820{
821 u8 load = iwl_mvm_tcm_load_percentage(airtime, elapsed);
822
823 if (load > IWL_MVM_TCM_LOAD_HIGH_THRESH)
824 return IWL_MVM_TRAFFIC_HIGH;
825 if (load > IWL_MVM_TCM_LOAD_MEDIUM_THRESH)
826 return IWL_MVM_TRAFFIC_MEDIUM;
827
828 return IWL_MVM_TRAFFIC_LOW;
829}
830
831static void iwl_mvm_tcm_iter(void *_data, u8 *mac, struct ieee80211_vif *vif)
832{
833 struct iwl_mvm *mvm = _data;
834 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
835 bool low_latency, prev = mvmvif->low_latency & LOW_LATENCY_TRAFFIC;
836
837 if (mvmvif->id >= NUM_MAC_INDEX_DRIVER)
838 return;
839
840 low_latency = mvm->tcm.result.low_latency[mvmvif->id];
841
842 if (!mvm->tcm.result.change[mvmvif->id] &&
843 prev == low_latency) {
844 iwl_mvm_update_quotas(mvm, false, NULL);
845 return;
846 }
847
848 if (prev != low_latency) {
849 /* this sends traffic load and updates quota as well */
850 iwl_mvm_update_low_latency(mvm, vif, low_latency,
851 LOW_LATENCY_TRAFFIC);
852 } else {
853 iwl_mvm_update_quotas(mvm, false, NULL);
854 }
855}
856
857static void iwl_mvm_tcm_results(struct iwl_mvm *mvm)
858{
859 guard(mvm)(mvm);
860
861 ieee80211_iterate_active_interfaces(
862 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
863 iwl_mvm_tcm_iter, mvm);
864
865 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN))
866 iwl_mvm_config_scan(mvm);
867}
868
869static void iwl_mvm_tcm_uapsd_nonagg_detected_wk(struct work_struct *wk)
870{
871 struct iwl_mvm *mvm;
872 struct iwl_mvm_vif *mvmvif;
873 struct ieee80211_vif *vif;
874
875 mvmvif = container_of(wk, struct iwl_mvm_vif,
876 uapsd_nonagg_detected_wk.work);
877 vif = container_of((void *)mvmvif, struct ieee80211_vif, drv_priv);
878 mvm = mvmvif->mvm;
879
880 if (mvm->tcm.data[mvmvif->id].opened_rx_ba_sessions)
881 return;
882
883 /* remember that this AP is broken */
884 memcpy(mvm->uapsd_noagg_bssids[mvm->uapsd_noagg_bssid_write_idx].addr,
885 vif->bss_conf.bssid, ETH_ALEN);
886 mvm->uapsd_noagg_bssid_write_idx++;
887 if (mvm->uapsd_noagg_bssid_write_idx >= IWL_MVM_UAPSD_NOAGG_LIST_LEN)
888 mvm->uapsd_noagg_bssid_write_idx = 0;
889
890 iwl_mvm_connection_loss(mvm, vif,
891 "AP isn't using AMPDU with uAPSD enabled");
892}
893
894static void iwl_mvm_uapsd_agg_disconnect(struct iwl_mvm *mvm,
895 struct ieee80211_vif *vif)
896{
897 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
898
899 if (vif->type != NL80211_IFTYPE_STATION)
900 return;
901
902 if (!vif->cfg.assoc)
903 return;
904
905 if (!mvmvif->deflink.queue_params[IEEE80211_AC_VO].uapsd &&
906 !mvmvif->deflink.queue_params[IEEE80211_AC_VI].uapsd &&
907 !mvmvif->deflink.queue_params[IEEE80211_AC_BE].uapsd &&
908 !mvmvif->deflink.queue_params[IEEE80211_AC_BK].uapsd)
909 return;
910
911 if (mvm->tcm.data[mvmvif->id].uapsd_nonagg_detect.detected)
912 return;
913
914 mvm->tcm.data[mvmvif->id].uapsd_nonagg_detect.detected = true;
915 IWL_INFO(mvm,
916 "detected AP should do aggregation but isn't, likely due to U-APSD\n");
917 schedule_delayed_work(&mvmvif->uapsd_nonagg_detected_wk,
918 15 * HZ);
919}
920
921static void iwl_mvm_check_uapsd_agg_expected_tpt(struct iwl_mvm *mvm,
922 unsigned int elapsed,
923 int mac)
924{
925 u64 bytes = mvm->tcm.data[mac].uapsd_nonagg_detect.rx_bytes;
926 u64 tpt;
927 unsigned long rate;
928 struct ieee80211_vif *vif;
929
930 rate = ewma_rate_read(&mvm->tcm.data[mac].uapsd_nonagg_detect.rate);
931
932 if (!rate || mvm->tcm.data[mac].opened_rx_ba_sessions ||
933 mvm->tcm.data[mac].uapsd_nonagg_detect.detected)
934 return;
935
936 if (iwl_mvm_has_new_rx_api(mvm)) {
937 tpt = 8 * bytes; /* kbps */
938 do_div(tpt, elapsed);
939 rate *= 1000; /* kbps */
940 if (tpt < 22 * rate / 100)
941 return;
942 } else {
943 /*
944 * the rate here is actually the threshold, in 100Kbps units,
945 * so do the needed conversion from bytes to 100Kbps:
946 * 100kb = bits / (100 * 1000),
947 * 100kbps = 100kb / (msecs / 1000) ==
948 * (bits / (100 * 1000)) / (msecs / 1000) ==
949 * bits / (100 * msecs)
950 */
951 tpt = (8 * bytes);
952 do_div(tpt, elapsed * 100);
953 if (tpt < rate)
954 return;
955 }
956
957 rcu_read_lock();
958 vif = rcu_dereference(mvm->vif_id_to_mac[mac]);
959 if (vif)
960 iwl_mvm_uapsd_agg_disconnect(mvm, vif);
961 rcu_read_unlock();
962}
963
964static void iwl_mvm_tcm_iterator(void *_data, u8 *mac,
965 struct ieee80211_vif *vif)
966{
967 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
968 u32 *band = _data;
969
970 if (!mvmvif->deflink.phy_ctxt)
971 return;
972
973 band[mvmvif->id] = mvmvif->deflink.phy_ctxt->channel->band;
974}
975
976static unsigned long iwl_mvm_calc_tcm_stats(struct iwl_mvm *mvm,
977 unsigned long ts,
978 bool handle_uapsd)
979{
980 unsigned int elapsed = jiffies_to_msecs(ts - mvm->tcm.ts);
981 unsigned int uapsd_elapsed =
982 jiffies_to_msecs(ts - mvm->tcm.uapsd_nonagg_ts);
983 u32 total_airtime = 0;
984 u32 band_airtime[NUM_NL80211_BANDS] = {0};
985 u32 band[NUM_MAC_INDEX_DRIVER] = {0};
986 int ac, mac, i;
987 bool low_latency = false;
988 enum iwl_mvm_traffic_load load, band_load;
989 bool handle_ll = time_after(ts, mvm->tcm.ll_ts + MVM_LL_PERIOD);
990
991 if (handle_ll)
992 mvm->tcm.ll_ts = ts;
993 if (handle_uapsd)
994 mvm->tcm.uapsd_nonagg_ts = ts;
995
996 mvm->tcm.result.elapsed = elapsed;
997
998 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
999 IEEE80211_IFACE_ITER_NORMAL,
1000 iwl_mvm_tcm_iterator,
1001 &band);
1002
1003 for (mac = 0; mac < NUM_MAC_INDEX_DRIVER; mac++) {
1004 struct iwl_mvm_tcm_mac *mdata = &mvm->tcm.data[mac];
1005 u32 vo_vi_pkts = 0;
1006 u32 airtime = mdata->rx.airtime + mdata->tx.airtime;
1007
1008 total_airtime += airtime;
1009 band_airtime[band[mac]] += airtime;
1010
1011 load = iwl_mvm_tcm_load(mvm, airtime, elapsed);
1012 mvm->tcm.result.change[mac] = load != mvm->tcm.result.load[mac];
1013 mvm->tcm.result.load[mac] = load;
1014 mvm->tcm.result.airtime[mac] = airtime;
1015
1016 for (ac = IEEE80211_AC_VO; ac <= IEEE80211_AC_VI; ac++)
1017 vo_vi_pkts += mdata->rx.pkts[ac] +
1018 mdata->tx.pkts[ac];
1019
1020 /* enable immediately with enough packets but defer disabling */
1021 if (vo_vi_pkts > IWL_MVM_TCM_LOWLAT_ENABLE_THRESH)
1022 mvm->tcm.result.low_latency[mac] = true;
1023 else if (handle_ll)
1024 mvm->tcm.result.low_latency[mac] = false;
1025
1026 if (handle_ll) {
1027 /* clear old data */
1028 memset(&mdata->rx.pkts, 0, sizeof(mdata->rx.pkts));
1029 memset(&mdata->tx.pkts, 0, sizeof(mdata->tx.pkts));
1030 }
1031 low_latency |= mvm->tcm.result.low_latency[mac];
1032
1033 if (!mvm->tcm.result.low_latency[mac] && handle_uapsd)
1034 iwl_mvm_check_uapsd_agg_expected_tpt(mvm, uapsd_elapsed,
1035 mac);
1036 /* clear old data */
1037 if (handle_uapsd)
1038 mdata->uapsd_nonagg_detect.rx_bytes = 0;
1039 memset(&mdata->rx.airtime, 0, sizeof(mdata->rx.airtime));
1040 memset(&mdata->tx.airtime, 0, sizeof(mdata->tx.airtime));
1041 }
1042
1043 load = iwl_mvm_tcm_load(mvm, total_airtime, elapsed);
1044 mvm->tcm.result.global_load = load;
1045
1046 for (i = 0; i < NUM_NL80211_BANDS; i++) {
1047 band_load = iwl_mvm_tcm_load(mvm, band_airtime[i], elapsed);
1048 mvm->tcm.result.band_load[i] = band_load;
1049 }
1050
1051 /*
1052 * If the current load isn't low we need to force re-evaluation
1053 * in the TCM period, so that we can return to low load if there
1054 * was no traffic at all (and thus iwl_mvm_recalc_tcm didn't get
1055 * triggered by traffic).
1056 */
1057 if (load != IWL_MVM_TRAFFIC_LOW)
1058 return MVM_TCM_PERIOD;
1059 /*
1060 * If low-latency is active we need to force re-evaluation after
1061 * (the longer) MVM_LL_PERIOD, so that we can disable low-latency
1062 * when there's no traffic at all.
1063 */
1064 if (low_latency)
1065 return MVM_LL_PERIOD;
1066 /*
1067 * Otherwise, we don't need to run the work struct because we're
1068 * in the default "idle" state - traffic indication is low (which
1069 * also covers the "no traffic" case) and low-latency is disabled
1070 * so there's no state that may need to be disabled when there's
1071 * no traffic at all.
1072 *
1073 * Note that this has no impact on the regular scheduling of the
1074 * updates triggered by traffic - those happen whenever one of the
1075 * two timeouts expire (if there's traffic at all.)
1076 */
1077 return 0;
1078}
1079
1080void iwl_mvm_recalc_tcm(struct iwl_mvm *mvm)
1081{
1082 unsigned long ts = jiffies;
1083 bool handle_uapsd =
1084 time_after(ts, mvm->tcm.uapsd_nonagg_ts +
1085 msecs_to_jiffies(IWL_MVM_UAPSD_NONAGG_PERIOD));
1086
1087 spin_lock(&mvm->tcm.lock);
1088 if (mvm->tcm.paused || !time_after(ts, mvm->tcm.ts + MVM_TCM_PERIOD)) {
1089 spin_unlock(&mvm->tcm.lock);
1090 return;
1091 }
1092 spin_unlock(&mvm->tcm.lock);
1093
1094 if (handle_uapsd && iwl_mvm_has_new_rx_api(mvm)) {
1095 guard(mvm)(mvm);
1096 if (iwl_mvm_request_statistics(mvm, true))
1097 handle_uapsd = false;
1098 }
1099
1100 spin_lock(&mvm->tcm.lock);
1101 /* re-check if somebody else won the recheck race */
1102 if (!mvm->tcm.paused && time_after(ts, mvm->tcm.ts + MVM_TCM_PERIOD)) {
1103 /* calculate statistics */
1104 unsigned long work_delay = iwl_mvm_calc_tcm_stats(mvm, ts,
1105 handle_uapsd);
1106
1107 /* the memset needs to be visible before the timestamp */
1108 smp_mb();
1109 mvm->tcm.ts = ts;
1110 if (work_delay)
1111 schedule_delayed_work(&mvm->tcm.work, work_delay);
1112 }
1113 spin_unlock(&mvm->tcm.lock);
1114
1115 iwl_mvm_tcm_results(mvm);
1116}
1117
1118void iwl_mvm_tcm_work(struct work_struct *work)
1119{
1120 struct delayed_work *delayed_work = to_delayed_work(work);
1121 struct iwl_mvm *mvm = container_of(delayed_work, struct iwl_mvm,
1122 tcm.work);
1123
1124 iwl_mvm_recalc_tcm(mvm);
1125}
1126
1127void iwl_mvm_pause_tcm(struct iwl_mvm *mvm, bool with_cancel)
1128{
1129 spin_lock_bh(&mvm->tcm.lock);
1130 mvm->tcm.paused = true;
1131 spin_unlock_bh(&mvm->tcm.lock);
1132 if (with_cancel)
1133 cancel_delayed_work_sync(&mvm->tcm.work);
1134}
1135
1136void iwl_mvm_resume_tcm(struct iwl_mvm *mvm)
1137{
1138 int mac;
1139 bool low_latency = false;
1140
1141 spin_lock_bh(&mvm->tcm.lock);
1142 mvm->tcm.ts = jiffies;
1143 mvm->tcm.ll_ts = jiffies;
1144 for (mac = 0; mac < NUM_MAC_INDEX_DRIVER; mac++) {
1145 struct iwl_mvm_tcm_mac *mdata = &mvm->tcm.data[mac];
1146
1147 memset(&mdata->rx.pkts, 0, sizeof(mdata->rx.pkts));
1148 memset(&mdata->tx.pkts, 0, sizeof(mdata->tx.pkts));
1149 memset(&mdata->rx.airtime, 0, sizeof(mdata->rx.airtime));
1150 memset(&mdata->tx.airtime, 0, sizeof(mdata->tx.airtime));
1151
1152 if (mvm->tcm.result.low_latency[mac])
1153 low_latency = true;
1154 }
1155 /* The TCM data needs to be reset before "paused" flag changes */
1156 smp_mb();
1157 mvm->tcm.paused = false;
1158
1159 /*
1160 * if the current load is not low or low latency is active, force
1161 * re-evaluation to cover the case of no traffic.
1162 */
1163 if (mvm->tcm.result.global_load > IWL_MVM_TRAFFIC_LOW)
1164 schedule_delayed_work(&mvm->tcm.work, MVM_TCM_PERIOD);
1165 else if (low_latency)
1166 schedule_delayed_work(&mvm->tcm.work, MVM_LL_PERIOD);
1167
1168 spin_unlock_bh(&mvm->tcm.lock);
1169}
1170
1171void iwl_mvm_tcm_add_vif(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1172{
1173 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1174
1175 INIT_DELAYED_WORK(&mvmvif->uapsd_nonagg_detected_wk,
1176 iwl_mvm_tcm_uapsd_nonagg_detected_wk);
1177}
1178
1179void iwl_mvm_tcm_rm_vif(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1180{
1181 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1182
1183 cancel_delayed_work_sync(&mvmvif->uapsd_nonagg_detected_wk);
1184}
1185
1186u32 iwl_mvm_get_systime(struct iwl_mvm *mvm)
1187{
1188 u32 reg_addr = DEVICE_SYSTEM_TIME_REG;
1189
1190 if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_22000 &&
1191 mvm->trans->cfg->gp2_reg_addr)
1192 reg_addr = mvm->trans->cfg->gp2_reg_addr;
1193
1194 return iwl_read_prph(mvm->trans, reg_addr);
1195}
1196
1197void iwl_mvm_get_sync_time(struct iwl_mvm *mvm, int clock_type,
1198 u32 *gp2, u64 *boottime, ktime_t *realtime)
1199{
1200 bool ps_disabled;
1201
1202 lockdep_assert_held(&mvm->mutex);
1203
1204 /* Disable power save when reading GP2 */
1205 ps_disabled = mvm->ps_disabled;
1206 if (!ps_disabled) {
1207 mvm->ps_disabled = true;
1208 iwl_mvm_power_update_device(mvm);
1209 }
1210
1211 *gp2 = iwl_mvm_get_systime(mvm);
1212
1213 if (clock_type == CLOCK_BOOTTIME && boottime)
1214 *boottime = ktime_get_boottime_ns();
1215 else if (clock_type == CLOCK_REALTIME && realtime)
1216 *realtime = ktime_get_real();
1217
1218 if (!ps_disabled) {
1219 mvm->ps_disabled = ps_disabled;
1220 iwl_mvm_power_update_device(mvm);
1221 }
1222}
1223
1224/* Find if at least two links from different vifs use same channel
1225 * FIXME: consider having a refcount array in struct iwl_mvm_vif for
1226 * used phy_ctxt ids.
1227 */
1228bool iwl_mvm_have_links_same_channel(struct iwl_mvm_vif *vif1,
1229 struct iwl_mvm_vif *vif2)
1230{
1231 unsigned int i, j;
1232
1233 for_each_mvm_vif_valid_link(vif1, i) {
1234 for_each_mvm_vif_valid_link(vif2, j) {
1235 if (vif1->link[i]->phy_ctxt == vif2->link[j]->phy_ctxt)
1236 return true;
1237 }
1238 }
1239
1240 return false;
1241}
1242
1243bool iwl_mvm_vif_is_active(struct iwl_mvm_vif *mvmvif)
1244{
1245 unsigned int i;
1246
1247 /* FIXME: can it fail when phy_ctxt is assigned? */
1248 for_each_mvm_vif_valid_link(mvmvif, i) {
1249 if (mvmvif->link[i]->phy_ctxt &&
1250 mvmvif->link[i]->phy_ctxt->id < NUM_PHY_CTX)
1251 return true;
1252 }
1253
1254 return false;
1255}
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 if (!(cmd->flags & CMD_SEND_IN_IDLE))
96 iwl_mvm_ref(mvm, IWL_MVM_REF_SENDING_CMD);
97 }
98
99 ret = iwl_trans_send_cmd(mvm->trans, cmd);
100
101 if (!(cmd->flags & (CMD_ASYNC | CMD_SEND_IN_IDLE)))
102 iwl_mvm_unref(mvm, IWL_MVM_REF_SENDING_CMD);
103
104 /*
105 * If the caller wants the SKB, then don't hide any problems, the
106 * caller might access the response buffer which will be NULL if
107 * the command failed.
108 */
109 if (cmd->flags & CMD_WANT_SKB)
110 return ret;
111
112 /* Silently ignore failures if RFKILL is asserted */
113 if (!ret || ret == -ERFKILL)
114 return 0;
115 return ret;
116}
117
118int iwl_mvm_send_cmd_pdu(struct iwl_mvm *mvm, u32 id,
119 u32 flags, u16 len, const void *data)
120{
121 struct iwl_host_cmd cmd = {
122 .id = id,
123 .len = { len, },
124 .data = { data, },
125 .flags = flags,
126 };
127
128 return iwl_mvm_send_cmd(mvm, &cmd);
129}
130
131/*
132 * We assume that the caller set the status to the success value
133 */
134int iwl_mvm_send_cmd_status(struct iwl_mvm *mvm, struct iwl_host_cmd *cmd,
135 u32 *status)
136{
137 struct iwl_rx_packet *pkt;
138 struct iwl_cmd_response *resp;
139 int ret, resp_len;
140
141 lockdep_assert_held(&mvm->mutex);
142
143#if defined(CONFIG_IWLWIFI_DEBUGFS) && defined(CONFIG_PM_SLEEP)
144 if (WARN_ON(mvm->d3_test_active))
145 return -EIO;
146#endif
147
148 /*
149 * Only synchronous commands can wait for status,
150 * we use WANT_SKB so the caller can't.
151 */
152 if (WARN_ONCE(cmd->flags & (CMD_ASYNC | CMD_WANT_SKB),
153 "cmd flags %x", cmd->flags))
154 return -EINVAL;
155
156 cmd->flags |= CMD_WANT_SKB;
157
158 ret = iwl_trans_send_cmd(mvm->trans, cmd);
159 if (ret == -ERFKILL) {
160 /*
161 * The command failed because of RFKILL, don't update
162 * the status, leave it as success and return 0.
163 */
164 return 0;
165 } else if (ret) {
166 return ret;
167 }
168
169 pkt = cmd->resp_pkt;
170 /* Can happen if RFKILL is asserted */
171 if (!pkt) {
172 ret = 0;
173 goto out_free_resp;
174 }
175
176 resp_len = iwl_rx_packet_payload_len(pkt);
177 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
178 ret = -EIO;
179 goto out_free_resp;
180 }
181
182 resp = (void *)pkt->data;
183 *status = le32_to_cpu(resp->status);
184 out_free_resp:
185 iwl_free_resp(cmd);
186 return ret;
187}
188
189/*
190 * We assume that the caller set the status to the sucess value
191 */
192int iwl_mvm_send_cmd_pdu_status(struct iwl_mvm *mvm, u32 id, u16 len,
193 const void *data, u32 *status)
194{
195 struct iwl_host_cmd cmd = {
196 .id = id,
197 .len = { len, },
198 .data = { data, },
199 };
200
201 return iwl_mvm_send_cmd_status(mvm, &cmd, status);
202}
203
204#define IWL_DECLARE_RATE_INFO(r) \
205 [IWL_RATE_##r##M_INDEX] = IWL_RATE_##r##M_PLCP
206
207/*
208 * Translate from fw_rate_index (IWL_RATE_XXM_INDEX) to PLCP
209 */
210static const u8 fw_rate_idx_to_plcp[IWL_RATE_COUNT] = {
211 IWL_DECLARE_RATE_INFO(1),
212 IWL_DECLARE_RATE_INFO(2),
213 IWL_DECLARE_RATE_INFO(5),
214 IWL_DECLARE_RATE_INFO(11),
215 IWL_DECLARE_RATE_INFO(6),
216 IWL_DECLARE_RATE_INFO(9),
217 IWL_DECLARE_RATE_INFO(12),
218 IWL_DECLARE_RATE_INFO(18),
219 IWL_DECLARE_RATE_INFO(24),
220 IWL_DECLARE_RATE_INFO(36),
221 IWL_DECLARE_RATE_INFO(48),
222 IWL_DECLARE_RATE_INFO(54),
223};
224
225int iwl_mvm_legacy_rate_to_mac80211_idx(u32 rate_n_flags,
226 enum nl80211_band band)
227{
228 int rate = rate_n_flags & RATE_LEGACY_RATE_MSK;
229 int idx;
230 int band_offset = 0;
231
232 /* Legacy rate format, search for match in table */
233 if (band == NL80211_BAND_5GHZ)
234 band_offset = IWL_FIRST_OFDM_RATE;
235 for (idx = band_offset; idx < IWL_RATE_COUNT_LEGACY; idx++)
236 if (fw_rate_idx_to_plcp[idx] == rate)
237 return idx - band_offset;
238
239 return -1;
240}
241
242u8 iwl_mvm_mac80211_idx_to_hwrate(int rate_idx)
243{
244 /* Get PLCP rate for tx_cmd->rate_n_flags */
245 return fw_rate_idx_to_plcp[rate_idx];
246}
247
248void iwl_mvm_rx_fw_error(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb)
249{
250 struct iwl_rx_packet *pkt = rxb_addr(rxb);
251 struct iwl_error_resp *err_resp = (void *)pkt->data;
252
253 IWL_ERR(mvm, "FW Error notification: type 0x%08X cmd_id 0x%02X\n",
254 le32_to_cpu(err_resp->error_type), err_resp->cmd_id);
255 IWL_ERR(mvm, "FW Error notification: seq 0x%04X service 0x%08X\n",
256 le16_to_cpu(err_resp->bad_cmd_seq_num),
257 le32_to_cpu(err_resp->error_service));
258 IWL_ERR(mvm, "FW Error notification: timestamp 0x%16llX\n",
259 le64_to_cpu(err_resp->timestamp));
260}
261
262/*
263 * Returns the first antenna as ANT_[ABC], as defined in iwl-config.h.
264 * The parameter should also be a combination of ANT_[ABC].
265 */
266u8 first_antenna(u8 mask)
267{
268 BUILD_BUG_ON(ANT_A != BIT(0)); /* using ffs is wrong if not */
269 if (WARN_ON_ONCE(!mask)) /* ffs will return 0 if mask is zeroed */
270 return BIT(0);
271 return BIT(ffs(mask) - 1);
272}
273
274/*
275 * Toggles between TX antennas to send the probe request on.
276 * Receives the bitmask of valid TX antennas and the *index* used
277 * for the last TX, and returns the next valid *index* to use.
278 * In order to set it in the tx_cmd, must do BIT(idx).
279 */
280u8 iwl_mvm_next_antenna(struct iwl_mvm *mvm, u8 valid, u8 last_idx)
281{
282 u8 ind = last_idx;
283 int i;
284
285 for (i = 0; i < RATE_MCS_ANT_NUM; i++) {
286 ind = (ind + 1) % RATE_MCS_ANT_NUM;
287 if (valid & BIT(ind))
288 return ind;
289 }
290
291 WARN_ONCE(1, "Failed to toggle between antennas 0x%x", valid);
292 return last_idx;
293}
294
295static const struct {
296 const char *name;
297 u8 num;
298} advanced_lookup[] = {
299 { "NMI_INTERRUPT_WDG", 0x34 },
300 { "SYSASSERT", 0x35 },
301 { "UCODE_VERSION_MISMATCH", 0x37 },
302 { "BAD_COMMAND", 0x38 },
303 { "NMI_INTERRUPT_DATA_ACTION_PT", 0x3C },
304 { "FATAL_ERROR", 0x3D },
305 { "NMI_TRM_HW_ERR", 0x46 },
306 { "NMI_INTERRUPT_TRM", 0x4C },
307 { "NMI_INTERRUPT_BREAK_POINT", 0x54 },
308 { "NMI_INTERRUPT_WDG_RXF_FULL", 0x5C },
309 { "NMI_INTERRUPT_WDG_NO_RBD_RXF_FULL", 0x64 },
310 { "NMI_INTERRUPT_HOST", 0x66 },
311 { "NMI_INTERRUPT_ACTION_PT", 0x7C },
312 { "NMI_INTERRUPT_UNKNOWN", 0x84 },
313 { "NMI_INTERRUPT_INST_ACTION_PT", 0x86 },
314 { "ADVANCED_SYSASSERT", 0 },
315};
316
317static const char *desc_lookup(u32 num)
318{
319 int i;
320
321 for (i = 0; i < ARRAY_SIZE(advanced_lookup) - 1; i++)
322 if (advanced_lookup[i].num == num)
323 return advanced_lookup[i].name;
324
325 /* No entry matches 'num', so it is the last: ADVANCED_SYSASSERT */
326 return advanced_lookup[i].name;
327}
328
329/*
330 * Note: This structure is read from the device with IO accesses,
331 * and the reading already does the endian conversion. As it is
332 * read with u32-sized accesses, any members with a different size
333 * need to be ordered correctly though!
334 */
335struct iwl_error_event_table_v1 {
336 u32 valid; /* (nonzero) valid, (0) log is empty */
337 u32 error_id; /* type of error */
338 u32 pc; /* program counter */
339 u32 blink1; /* branch link */
340 u32 blink2; /* branch link */
341 u32 ilink1; /* interrupt link */
342 u32 ilink2; /* interrupt link */
343 u32 data1; /* error-specific data */
344 u32 data2; /* error-specific data */
345 u32 data3; /* error-specific data */
346 u32 bcon_time; /* beacon timer */
347 u32 tsf_low; /* network timestamp function timer */
348 u32 tsf_hi; /* network timestamp function timer */
349 u32 gp1; /* GP1 timer register */
350 u32 gp2; /* GP2 timer register */
351 u32 gp3; /* GP3 timer register */
352 u32 ucode_ver; /* uCode version */
353 u32 hw_ver; /* HW Silicon version */
354 u32 brd_ver; /* HW board version */
355 u32 log_pc; /* log program counter */
356 u32 frame_ptr; /* frame pointer */
357 u32 stack_ptr; /* stack pointer */
358 u32 hcmd; /* last host command header */
359 u32 isr0; /* isr status register LMPM_NIC_ISR0:
360 * rxtx_flag */
361 u32 isr1; /* isr status register LMPM_NIC_ISR1:
362 * host_flag */
363 u32 isr2; /* isr status register LMPM_NIC_ISR2:
364 * enc_flag */
365 u32 isr3; /* isr status register LMPM_NIC_ISR3:
366 * time_flag */
367 u32 isr4; /* isr status register LMPM_NIC_ISR4:
368 * wico interrupt */
369 u32 isr_pref; /* isr status register LMPM_NIC_PREF_STAT */
370 u32 wait_event; /* wait event() caller address */
371 u32 l2p_control; /* L2pControlField */
372 u32 l2p_duration; /* L2pDurationField */
373 u32 l2p_mhvalid; /* L2pMhValidBits */
374 u32 l2p_addr_match; /* L2pAddrMatchStat */
375 u32 lmpm_pmg_sel; /* indicate which clocks are turned on
376 * (LMPM_PMG_SEL) */
377 u32 u_timestamp; /* indicate when the date and time of the
378 * compilation */
379 u32 flow_handler; /* FH read/write pointers, RX credit */
380} __packed /* LOG_ERROR_TABLE_API_S_VER_1 */;
381
382struct iwl_error_event_table {
383 u32 valid; /* (nonzero) valid, (0) log is empty */
384 u32 error_id; /* type of error */
385 u32 trm_hw_status0; /* TRM HW status */
386 u32 trm_hw_status1; /* TRM HW status */
387 u32 blink2; /* branch link */
388 u32 ilink1; /* interrupt link */
389 u32 ilink2; /* interrupt link */
390 u32 data1; /* error-specific data */
391 u32 data2; /* error-specific data */
392 u32 data3; /* error-specific data */
393 u32 bcon_time; /* beacon timer */
394 u32 tsf_low; /* network timestamp function timer */
395 u32 tsf_hi; /* network timestamp function timer */
396 u32 gp1; /* GP1 timer register */
397 u32 gp2; /* GP2 timer register */
398 u32 fw_rev_type; /* firmware revision type */
399 u32 major; /* uCode version major */
400 u32 minor; /* uCode version minor */
401 u32 hw_ver; /* HW Silicon version */
402 u32 brd_ver; /* HW board version */
403 u32 log_pc; /* log program counter */
404 u32 frame_ptr; /* frame pointer */
405 u32 stack_ptr; /* stack pointer */
406 u32 hcmd; /* last host command header */
407 u32 isr0; /* isr status register LMPM_NIC_ISR0:
408 * rxtx_flag */
409 u32 isr1; /* isr status register LMPM_NIC_ISR1:
410 * host_flag */
411 u32 isr2; /* isr status register LMPM_NIC_ISR2:
412 * enc_flag */
413 u32 isr3; /* isr status register LMPM_NIC_ISR3:
414 * time_flag */
415 u32 isr4; /* isr status register LMPM_NIC_ISR4:
416 * wico interrupt */
417 u32 last_cmd_id; /* last HCMD id handled by the firmware */
418 u32 wait_event; /* wait event() caller address */
419 u32 l2p_control; /* L2pControlField */
420 u32 l2p_duration; /* L2pDurationField */
421 u32 l2p_mhvalid; /* L2pMhValidBits */
422 u32 l2p_addr_match; /* L2pAddrMatchStat */
423 u32 lmpm_pmg_sel; /* indicate which clocks are turned on
424 * (LMPM_PMG_SEL) */
425 u32 u_timestamp; /* indicate when the date and time of the
426 * compilation */
427 u32 flow_handler; /* FH read/write pointers, RX credit */
428} __packed /* LOG_ERROR_TABLE_API_S_VER_3 */;
429
430/*
431 * UMAC error struct - relevant starting from family 8000 chip.
432 * Note: This structure is read from the device with IO accesses,
433 * and the reading already does the endian conversion. As it is
434 * read with u32-sized accesses, any members with a different size
435 * need to be ordered correctly though!
436 */
437struct iwl_umac_error_event_table {
438 u32 valid; /* (nonzero) valid, (0) log is empty */
439 u32 error_id; /* type of error */
440 u32 blink1; /* branch link */
441 u32 blink2; /* branch link */
442 u32 ilink1; /* interrupt link */
443 u32 ilink2; /* interrupt link */
444 u32 data1; /* error-specific data */
445 u32 data2; /* error-specific data */
446 u32 data3; /* error-specific data */
447 u32 umac_major;
448 u32 umac_minor;
449 u32 frame_pointer; /* core register 27*/
450 u32 stack_pointer; /* core register 28 */
451 u32 cmd_header; /* latest host cmd sent to UMAC */
452 u32 nic_isr_pref; /* ISR status register */
453} __packed;
454
455#define ERROR_START_OFFSET (1 * sizeof(u32))
456#define ERROR_ELEM_SIZE (7 * sizeof(u32))
457
458static void iwl_mvm_dump_umac_error_log(struct iwl_mvm *mvm)
459{
460 struct iwl_trans *trans = mvm->trans;
461 struct iwl_umac_error_event_table table;
462 u32 base;
463
464 base = mvm->umac_error_event_table;
465
466 if (base < 0x800000) {
467 IWL_ERR(mvm,
468 "Not valid error log pointer 0x%08X for %s uCode\n",
469 base,
470 (mvm->cur_ucode == IWL_UCODE_INIT)
471 ? "Init" : "RT");
472 return;
473 }
474
475 iwl_trans_read_mem_bytes(trans, base, &table, sizeof(table));
476
477 if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) {
478 IWL_ERR(trans, "Start IWL Error Log Dump:\n");
479 IWL_ERR(trans, "Status: 0x%08lX, count: %d\n",
480 mvm->status, table.valid);
481 }
482
483 IWL_ERR(mvm, "0x%08X | %s\n", table.error_id,
484 desc_lookup(table.error_id));
485 IWL_ERR(mvm, "0x%08X | umac branchlink1\n", table.blink1);
486 IWL_ERR(mvm, "0x%08X | umac branchlink2\n", table.blink2);
487 IWL_ERR(mvm, "0x%08X | umac interruptlink1\n", table.ilink1);
488 IWL_ERR(mvm, "0x%08X | umac interruptlink2\n", table.ilink2);
489 IWL_ERR(mvm, "0x%08X | umac data1\n", table.data1);
490 IWL_ERR(mvm, "0x%08X | umac data2\n", table.data2);
491 IWL_ERR(mvm, "0x%08X | umac data3\n", table.data3);
492 IWL_ERR(mvm, "0x%08X | umac major\n", table.umac_major);
493 IWL_ERR(mvm, "0x%08X | umac minor\n", table.umac_minor);
494 IWL_ERR(mvm, "0x%08X | frame pointer\n", table.frame_pointer);
495 IWL_ERR(mvm, "0x%08X | stack pointer\n", table.stack_pointer);
496 IWL_ERR(mvm, "0x%08X | last host cmd\n", table.cmd_header);
497 IWL_ERR(mvm, "0x%08X | isr status reg\n", table.nic_isr_pref);
498}
499
500void iwl_mvm_dump_nic_error_log(struct iwl_mvm *mvm)
501{
502 struct iwl_trans *trans = mvm->trans;
503 struct iwl_error_event_table table;
504 u32 base;
505
506 base = mvm->error_event_table;
507 if (mvm->cur_ucode == IWL_UCODE_INIT) {
508 if (!base)
509 base = mvm->fw->init_errlog_ptr;
510 } else {
511 if (!base)
512 base = mvm->fw->inst_errlog_ptr;
513 }
514
515 if (base < 0x400000) {
516 IWL_ERR(mvm,
517 "Not valid error log pointer 0x%08X for %s uCode\n",
518 base,
519 (mvm->cur_ucode == IWL_UCODE_INIT)
520 ? "Init" : "RT");
521 return;
522 }
523
524 iwl_trans_read_mem_bytes(trans, base, &table, sizeof(table));
525
526 if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) {
527 IWL_ERR(trans, "Start IWL Error Log Dump:\n");
528 IWL_ERR(trans, "Status: 0x%08lX, count: %d\n",
529 mvm->status, table.valid);
530 }
531
532 /* Do not change this output - scripts rely on it */
533
534 IWL_ERR(mvm, "Loaded firmware version: %s\n", mvm->fw->fw_version);
535
536 trace_iwlwifi_dev_ucode_error(trans->dev, table.error_id, table.tsf_low,
537 table.data1, table.data2, table.data3,
538 table.blink2, table.ilink1,
539 table.ilink2, table.bcon_time, table.gp1,
540 table.gp2, table.fw_rev_type, table.major,
541 table.minor, table.hw_ver, table.brd_ver);
542 IWL_ERR(mvm, "0x%08X | %-28s\n", table.error_id,
543 desc_lookup(table.error_id));
544 IWL_ERR(mvm, "0x%08X | trm_hw_status0\n", table.trm_hw_status0);
545 IWL_ERR(mvm, "0x%08X | trm_hw_status1\n", table.trm_hw_status1);
546 IWL_ERR(mvm, "0x%08X | branchlink2\n", table.blink2);
547 IWL_ERR(mvm, "0x%08X | interruptlink1\n", table.ilink1);
548 IWL_ERR(mvm, "0x%08X | interruptlink2\n", table.ilink2);
549 IWL_ERR(mvm, "0x%08X | data1\n", table.data1);
550 IWL_ERR(mvm, "0x%08X | data2\n", table.data2);
551 IWL_ERR(mvm, "0x%08X | data3\n", table.data3);
552 IWL_ERR(mvm, "0x%08X | beacon time\n", table.bcon_time);
553 IWL_ERR(mvm, "0x%08X | tsf low\n", table.tsf_low);
554 IWL_ERR(mvm, "0x%08X | tsf hi\n", table.tsf_hi);
555 IWL_ERR(mvm, "0x%08X | time gp1\n", table.gp1);
556 IWL_ERR(mvm, "0x%08X | time gp2\n", table.gp2);
557 IWL_ERR(mvm, "0x%08X | uCode revision type\n", table.fw_rev_type);
558 IWL_ERR(mvm, "0x%08X | uCode version major\n", table.major);
559 IWL_ERR(mvm, "0x%08X | uCode version minor\n", table.minor);
560 IWL_ERR(mvm, "0x%08X | hw version\n", table.hw_ver);
561 IWL_ERR(mvm, "0x%08X | board version\n", table.brd_ver);
562 IWL_ERR(mvm, "0x%08X | hcmd\n", table.hcmd);
563 IWL_ERR(mvm, "0x%08X | isr0\n", table.isr0);
564 IWL_ERR(mvm, "0x%08X | isr1\n", table.isr1);
565 IWL_ERR(mvm, "0x%08X | isr2\n", table.isr2);
566 IWL_ERR(mvm, "0x%08X | isr3\n", table.isr3);
567 IWL_ERR(mvm, "0x%08X | isr4\n", table.isr4);
568 IWL_ERR(mvm, "0x%08X | last cmd Id\n", table.last_cmd_id);
569 IWL_ERR(mvm, "0x%08X | wait_event\n", table.wait_event);
570 IWL_ERR(mvm, "0x%08X | l2p_control\n", table.l2p_control);
571 IWL_ERR(mvm, "0x%08X | l2p_duration\n", table.l2p_duration);
572 IWL_ERR(mvm, "0x%08X | l2p_mhvalid\n", table.l2p_mhvalid);
573 IWL_ERR(mvm, "0x%08X | l2p_addr_match\n", table.l2p_addr_match);
574 IWL_ERR(mvm, "0x%08X | lmpm_pmg_sel\n", table.lmpm_pmg_sel);
575 IWL_ERR(mvm, "0x%08X | timestamp\n", table.u_timestamp);
576 IWL_ERR(mvm, "0x%08X | flow_handler\n", table.flow_handler);
577
578 if (mvm->support_umac_log)
579 iwl_mvm_dump_umac_error_log(mvm);
580}
581
582int iwl_mvm_find_free_queue(struct iwl_mvm *mvm, u8 sta_id, u8 minq, u8 maxq)
583{
584 int i;
585
586 lockdep_assert_held(&mvm->queue_info_lock);
587
588 /* Start by looking for a free queue */
589 for (i = minq; i <= maxq; i++)
590 if (mvm->queue_info[i].hw_queue_refcount == 0 &&
591 mvm->queue_info[i].status == IWL_MVM_QUEUE_FREE)
592 return i;
593
594 /*
595 * If no free queue found - settle for an inactive one to reconfigure
596 * Make sure that the inactive queue either already belongs to this STA,
597 * or that if it belongs to another one - it isn't the reserved queue
598 */
599 for (i = minq; i <= maxq; i++)
600 if (mvm->queue_info[i].status == IWL_MVM_QUEUE_INACTIVE &&
601 (sta_id == mvm->queue_info[i].ra_sta_id ||
602 !mvm->queue_info[i].reserved))
603 return i;
604
605 return -ENOSPC;
606}
607
608int iwl_mvm_reconfig_scd(struct iwl_mvm *mvm, int queue, int fifo, int sta_id,
609 int tid, int frame_limit, u16 ssn)
610{
611 struct iwl_scd_txq_cfg_cmd cmd = {
612 .scd_queue = queue,
613 .action = SCD_CFG_ENABLE_QUEUE,
614 .window = frame_limit,
615 .sta_id = sta_id,
616 .ssn = cpu_to_le16(ssn),
617 .tx_fifo = fifo,
618 .aggregate = (queue >= IWL_MVM_DQA_MIN_DATA_QUEUE ||
619 queue == IWL_MVM_DQA_BSS_CLIENT_QUEUE),
620 .tid = tid,
621 };
622 int ret;
623
624 spin_lock_bh(&mvm->queue_info_lock);
625 if (WARN(mvm->queue_info[queue].hw_queue_refcount == 0,
626 "Trying to reconfig unallocated queue %d\n", queue)) {
627 spin_unlock_bh(&mvm->queue_info_lock);
628 return -ENXIO;
629 }
630 spin_unlock_bh(&mvm->queue_info_lock);
631
632 IWL_DEBUG_TX_QUEUES(mvm, "Reconfig SCD for TXQ #%d\n", queue);
633
634 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd);
635 WARN_ONCE(ret, "Failed to re-configure queue %d on FIFO %d, ret=%d\n",
636 queue, fifo, ret);
637
638 return ret;
639}
640
641void iwl_mvm_enable_txq(struct iwl_mvm *mvm, int queue, int mac80211_queue,
642 u16 ssn, const struct iwl_trans_txq_scd_cfg *cfg,
643 unsigned int wdg_timeout)
644{
645 bool enable_queue = true;
646
647 spin_lock_bh(&mvm->queue_info_lock);
648
649 /* Make sure this TID isn't already enabled */
650 if (mvm->queue_info[queue].tid_bitmap & BIT(cfg->tid)) {
651 spin_unlock_bh(&mvm->queue_info_lock);
652 IWL_ERR(mvm, "Trying to enable TXQ with existing TID %d\n",
653 cfg->tid);
654 return;
655 }
656
657 /* Update mappings and refcounts */
658 if (mvm->queue_info[queue].hw_queue_refcount > 0)
659 enable_queue = false;
660
661 mvm->queue_info[queue].hw_queue_to_mac80211 |= BIT(mac80211_queue);
662 mvm->queue_info[queue].hw_queue_refcount++;
663 mvm->queue_info[queue].tid_bitmap |= BIT(cfg->tid);
664 mvm->queue_info[queue].ra_sta_id = cfg->sta_id;
665
666 if (enable_queue) {
667 if (cfg->tid != IWL_MAX_TID_COUNT)
668 mvm->queue_info[queue].mac80211_ac =
669 tid_to_mac80211_ac[cfg->tid];
670 else
671 mvm->queue_info[queue].mac80211_ac = IEEE80211_AC_VO;
672
673 mvm->queue_info[queue].txq_tid = cfg->tid;
674 }
675
676 IWL_DEBUG_TX_QUEUES(mvm,
677 "Enabling TXQ #%d refcount=%d (mac80211 map:0x%x)\n",
678 queue, mvm->queue_info[queue].hw_queue_refcount,
679 mvm->queue_info[queue].hw_queue_to_mac80211);
680
681 spin_unlock_bh(&mvm->queue_info_lock);
682
683 /* Send the enabling command if we need to */
684 if (enable_queue) {
685 struct iwl_scd_txq_cfg_cmd cmd = {
686 .scd_queue = queue,
687 .action = SCD_CFG_ENABLE_QUEUE,
688 .window = cfg->frame_limit,
689 .sta_id = cfg->sta_id,
690 .ssn = cpu_to_le16(ssn),
691 .tx_fifo = cfg->fifo,
692 .aggregate = cfg->aggregate,
693 .tid = cfg->tid,
694 };
695
696 /* Set sta_id in the command, if it exists */
697 if (iwl_mvm_is_dqa_supported(mvm))
698 cmd.sta_id = cfg->sta_id;
699
700 iwl_trans_txq_enable_cfg(mvm->trans, queue, ssn, NULL,
701 wdg_timeout);
702 WARN(iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd),
703 &cmd),
704 "Failed to configure queue %d on FIFO %d\n", queue,
705 cfg->fifo);
706 }
707}
708
709void iwl_mvm_disable_txq(struct iwl_mvm *mvm, int queue, int mac80211_queue,
710 u8 tid, u8 flags)
711{
712 struct iwl_scd_txq_cfg_cmd cmd = {
713 .scd_queue = queue,
714 .action = SCD_CFG_DISABLE_QUEUE,
715 };
716 bool remove_mac_queue = true;
717 int ret;
718
719 spin_lock_bh(&mvm->queue_info_lock);
720
721 if (WARN_ON(mvm->queue_info[queue].hw_queue_refcount == 0)) {
722 spin_unlock_bh(&mvm->queue_info_lock);
723 return;
724 }
725
726 mvm->queue_info[queue].tid_bitmap &= ~BIT(tid);
727
728 /*
729 * If there is another TID with the same AC - don't remove the MAC queue
730 * from the mapping
731 */
732 if (tid < IWL_MAX_TID_COUNT) {
733 unsigned long tid_bitmap =
734 mvm->queue_info[queue].tid_bitmap;
735 int ac = tid_to_mac80211_ac[tid];
736 int i;
737
738 for_each_set_bit(i, &tid_bitmap, IWL_MAX_TID_COUNT) {
739 if (tid_to_mac80211_ac[i] == ac)
740 remove_mac_queue = false;
741 }
742 }
743
744 if (remove_mac_queue)
745 mvm->queue_info[queue].hw_queue_to_mac80211 &=
746 ~BIT(mac80211_queue);
747 mvm->queue_info[queue].hw_queue_refcount--;
748
749 cmd.action = mvm->queue_info[queue].hw_queue_refcount ?
750 SCD_CFG_ENABLE_QUEUE : SCD_CFG_DISABLE_QUEUE;
751 if (cmd.action == SCD_CFG_DISABLE_QUEUE)
752 mvm->queue_info[queue].status = IWL_MVM_QUEUE_FREE;
753
754 IWL_DEBUG_TX_QUEUES(mvm,
755 "Disabling TXQ #%d refcount=%d (mac80211 map:0x%x)\n",
756 queue,
757 mvm->queue_info[queue].hw_queue_refcount,
758 mvm->queue_info[queue].hw_queue_to_mac80211);
759
760 /* If the queue is still enabled - nothing left to do in this func */
761 if (cmd.action == SCD_CFG_ENABLE_QUEUE) {
762 spin_unlock_bh(&mvm->queue_info_lock);
763 return;
764 }
765
766 cmd.sta_id = mvm->queue_info[queue].ra_sta_id;
767 cmd.tid = mvm->queue_info[queue].txq_tid;
768
769 /* Make sure queue info is correct even though we overwrite it */
770 WARN(mvm->queue_info[queue].hw_queue_refcount ||
771 mvm->queue_info[queue].tid_bitmap ||
772 mvm->queue_info[queue].hw_queue_to_mac80211,
773 "TXQ #%d info out-of-sync - refcount=%d, mac map=0x%x, tid=0x%x\n",
774 queue, mvm->queue_info[queue].hw_queue_refcount,
775 mvm->queue_info[queue].hw_queue_to_mac80211,
776 mvm->queue_info[queue].tid_bitmap);
777
778 /* If we are here - the queue is freed and we can zero out these vals */
779 mvm->queue_info[queue].hw_queue_refcount = 0;
780 mvm->queue_info[queue].tid_bitmap = 0;
781 mvm->queue_info[queue].hw_queue_to_mac80211 = 0;
782
783 /* Regardless if this is a reserved TXQ for a STA - mark it as false */
784 mvm->queue_info[queue].reserved = false;
785
786 spin_unlock_bh(&mvm->queue_info_lock);
787
788 iwl_trans_txq_disable(mvm->trans, queue, false);
789 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, flags,
790 sizeof(cmd), &cmd);
791 if (ret)
792 IWL_ERR(mvm, "Failed to disable queue %d (ret=%d)\n",
793 queue, ret);
794}
795
796/**
797 * iwl_mvm_send_lq_cmd() - Send link quality command
798 * @init: This command is sent as part of station initialization right
799 * after station has been added.
800 *
801 * The link quality command is sent as the last step of station creation.
802 * This is the special case in which init is set and we call a callback in
803 * this case to clear the state indicating that station creation is in
804 * progress.
805 */
806int iwl_mvm_send_lq_cmd(struct iwl_mvm *mvm, struct iwl_lq_cmd *lq, bool init)
807{
808 struct iwl_host_cmd cmd = {
809 .id = LQ_CMD,
810 .len = { sizeof(struct iwl_lq_cmd), },
811 .flags = init ? 0 : CMD_ASYNC,
812 .data = { lq, },
813 };
814
815 if (WARN_ON(lq->sta_id == IWL_MVM_STATION_COUNT))
816 return -EINVAL;
817
818 return iwl_mvm_send_cmd(mvm, &cmd);
819}
820
821/**
822 * iwl_mvm_update_smps - Get a request to change the SMPS mode
823 * @req_type: The part of the driver who call for a change.
824 * @smps_requests: The request to change the SMPS mode.
825 *
826 * Get a requst to change the SMPS mode,
827 * and change it according to all other requests in the driver.
828 */
829void iwl_mvm_update_smps(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
830 enum iwl_mvm_smps_type_request req_type,
831 enum ieee80211_smps_mode smps_request)
832{
833 struct iwl_mvm_vif *mvmvif;
834 enum ieee80211_smps_mode smps_mode;
835 int i;
836
837 lockdep_assert_held(&mvm->mutex);
838
839 /* SMPS is irrelevant for NICs that don't have at least 2 RX antenna */
840 if (num_of_ant(iwl_mvm_get_valid_rx_ant(mvm)) == 1)
841 return;
842
843 if (vif->type == NL80211_IFTYPE_AP)
844 smps_mode = IEEE80211_SMPS_OFF;
845 else
846 smps_mode = IEEE80211_SMPS_AUTOMATIC;
847
848 mvmvif = iwl_mvm_vif_from_mac80211(vif);
849 mvmvif->smps_requests[req_type] = smps_request;
850 for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++) {
851 if (mvmvif->smps_requests[i] == IEEE80211_SMPS_STATIC) {
852 smps_mode = IEEE80211_SMPS_STATIC;
853 break;
854 }
855 if (mvmvif->smps_requests[i] == IEEE80211_SMPS_DYNAMIC)
856 smps_mode = IEEE80211_SMPS_DYNAMIC;
857 }
858
859 ieee80211_request_smps(vif, smps_mode);
860}
861
862int iwl_mvm_request_statistics(struct iwl_mvm *mvm, bool clear)
863{
864 struct iwl_statistics_cmd scmd = {
865 .flags = clear ? cpu_to_le32(IWL_STATISTICS_FLG_CLEAR) : 0,
866 };
867 struct iwl_host_cmd cmd = {
868 .id = STATISTICS_CMD,
869 .len[0] = sizeof(scmd),
870 .data[0] = &scmd,
871 .flags = CMD_WANT_SKB,
872 };
873 int ret;
874
875 ret = iwl_mvm_send_cmd(mvm, &cmd);
876 if (ret)
877 return ret;
878
879 iwl_mvm_handle_rx_statistics(mvm, cmd.resp_pkt);
880 iwl_free_resp(&cmd);
881
882 if (clear)
883 iwl_mvm_accu_radio_stats(mvm);
884
885 return 0;
886}
887
888void iwl_mvm_accu_radio_stats(struct iwl_mvm *mvm)
889{
890 mvm->accu_radio_stats.rx_time += mvm->radio_stats.rx_time;
891 mvm->accu_radio_stats.tx_time += mvm->radio_stats.tx_time;
892 mvm->accu_radio_stats.on_time_rf += mvm->radio_stats.on_time_rf;
893 mvm->accu_radio_stats.on_time_scan += mvm->radio_stats.on_time_scan;
894}
895
896static void iwl_mvm_diversity_iter(void *_data, u8 *mac,
897 struct ieee80211_vif *vif)
898{
899 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
900 bool *result = _data;
901 int i;
902
903 for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++) {
904 if (mvmvif->smps_requests[i] == IEEE80211_SMPS_STATIC ||
905 mvmvif->smps_requests[i] == IEEE80211_SMPS_DYNAMIC)
906 *result = false;
907 }
908}
909
910bool iwl_mvm_rx_diversity_allowed(struct iwl_mvm *mvm)
911{
912 bool result = true;
913
914 lockdep_assert_held(&mvm->mutex);
915
916 if (num_of_ant(iwl_mvm_get_valid_rx_ant(mvm)) == 1)
917 return false;
918
919 if (mvm->cfg->rx_with_siso_diversity)
920 return false;
921
922 ieee80211_iterate_active_interfaces_atomic(
923 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
924 iwl_mvm_diversity_iter, &result);
925
926 return result;
927}
928
929int iwl_mvm_update_low_latency(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
930 bool prev)
931{
932 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
933 int res;
934
935 lockdep_assert_held(&mvm->mutex);
936
937 if (iwl_mvm_vif_low_latency(mvmvif) == prev)
938 return 0;
939
940 res = iwl_mvm_update_quotas(mvm, false, NULL);
941 if (res)
942 return res;
943
944 iwl_mvm_bt_coex_vif_change(mvm);
945
946 return iwl_mvm_power_update_mac(mvm);
947}
948
949static void iwl_mvm_ll_iter(void *_data, u8 *mac, struct ieee80211_vif *vif)
950{
951 bool *result = _data;
952
953 if (iwl_mvm_vif_low_latency(iwl_mvm_vif_from_mac80211(vif)))
954 *result = true;
955}
956
957bool iwl_mvm_low_latency(struct iwl_mvm *mvm)
958{
959 bool result = false;
960
961 ieee80211_iterate_active_interfaces_atomic(
962 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
963 iwl_mvm_ll_iter, &result);
964
965 return result;
966}
967
968struct iwl_bss_iter_data {
969 struct ieee80211_vif *vif;
970 bool error;
971};
972
973static void iwl_mvm_bss_iface_iterator(void *_data, u8 *mac,
974 struct ieee80211_vif *vif)
975{
976 struct iwl_bss_iter_data *data = _data;
977
978 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p)
979 return;
980
981 if (data->vif) {
982 data->error = true;
983 return;
984 }
985
986 data->vif = vif;
987}
988
989struct ieee80211_vif *iwl_mvm_get_bss_vif(struct iwl_mvm *mvm)
990{
991 struct iwl_bss_iter_data bss_iter_data = {};
992
993 ieee80211_iterate_active_interfaces_atomic(
994 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
995 iwl_mvm_bss_iface_iterator, &bss_iter_data);
996
997 if (bss_iter_data.error) {
998 IWL_ERR(mvm, "More than one managed interface active!\n");
999 return ERR_PTR(-EINVAL);
1000 }
1001
1002 return bss_iter_data.vif;
1003}
1004
1005unsigned int iwl_mvm_get_wd_timeout(struct iwl_mvm *mvm,
1006 struct ieee80211_vif *vif,
1007 bool tdls, bool cmd_q)
1008{
1009 struct iwl_fw_dbg_trigger_tlv *trigger;
1010 struct iwl_fw_dbg_trigger_txq_timer *txq_timer;
1011 unsigned int default_timeout =
1012 cmd_q ? IWL_DEF_WD_TIMEOUT : mvm->cfg->base_params->wd_timeout;
1013
1014 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_TXQ_TIMERS))
1015 return iwlmvm_mod_params.tfd_q_hang_detect ?
1016 default_timeout : IWL_WATCHDOG_DISABLED;
1017
1018 trigger = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_TXQ_TIMERS);
1019 txq_timer = (void *)trigger->data;
1020
1021 if (tdls)
1022 return le32_to_cpu(txq_timer->tdls);
1023
1024 if (cmd_q)
1025 return le32_to_cpu(txq_timer->command_queue);
1026
1027 if (WARN_ON(!vif))
1028 return default_timeout;
1029
1030 switch (ieee80211_vif_type_p2p(vif)) {
1031 case NL80211_IFTYPE_ADHOC:
1032 return le32_to_cpu(txq_timer->ibss);
1033 case NL80211_IFTYPE_STATION:
1034 return le32_to_cpu(txq_timer->bss);
1035 case NL80211_IFTYPE_AP:
1036 return le32_to_cpu(txq_timer->softap);
1037 case NL80211_IFTYPE_P2P_CLIENT:
1038 return le32_to_cpu(txq_timer->p2p_client);
1039 case NL80211_IFTYPE_P2P_GO:
1040 return le32_to_cpu(txq_timer->p2p_go);
1041 case NL80211_IFTYPE_P2P_DEVICE:
1042 return le32_to_cpu(txq_timer->p2p_device);
1043 default:
1044 WARN_ON(1);
1045 return mvm->cfg->base_params->wd_timeout;
1046 }
1047}
1048
1049void iwl_mvm_connection_loss(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1050 const char *errmsg)
1051{
1052 struct iwl_fw_dbg_trigger_tlv *trig;
1053 struct iwl_fw_dbg_trigger_mlme *trig_mlme;
1054
1055 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_MLME))
1056 goto out;
1057
1058 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_MLME);
1059 trig_mlme = (void *)trig->data;
1060 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
1061 goto out;
1062
1063 if (trig_mlme->stop_connection_loss &&
1064 --trig_mlme->stop_connection_loss)
1065 goto out;
1066
1067 iwl_mvm_fw_dbg_collect_trig(mvm, trig, "%s", errmsg);
1068
1069out:
1070 ieee80211_connection_loss(vif);
1071}
1072
1073/*
1074 * Remove inactive TIDs of a given queue.
1075 * If all queue TIDs are inactive - mark the queue as inactive
1076 * If only some the queue TIDs are inactive - unmap them from the queue
1077 */
1078static void iwl_mvm_remove_inactive_tids(struct iwl_mvm *mvm,
1079 struct iwl_mvm_sta *mvmsta, int queue,
1080 unsigned long tid_bitmap)
1081{
1082 int tid;
1083
1084 lockdep_assert_held(&mvmsta->lock);
1085 lockdep_assert_held(&mvm->queue_info_lock);
1086
1087 /* Go over all non-active TIDs, incl. IWL_MAX_TID_COUNT (for mgmt) */
1088 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) {
1089 /* If some TFDs are still queued - don't mark TID as inactive */
1090 if (iwl_mvm_tid_queued(&mvmsta->tid_data[tid]))
1091 tid_bitmap &= ~BIT(tid);
1092 }
1093
1094 /* If all TIDs in the queue are inactive - mark queue as inactive. */
1095 if (tid_bitmap == mvm->queue_info[queue].tid_bitmap) {
1096 mvm->queue_info[queue].status = IWL_MVM_QUEUE_INACTIVE;
1097
1098 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1)
1099 mvmsta->tid_data[tid].is_tid_active = false;
1100
1101 IWL_DEBUG_TX_QUEUES(mvm, "Queue %d marked as inactive\n",
1102 queue);
1103 return;
1104 }
1105
1106 /*
1107 * If we are here, this is a shared queue and not all TIDs timed-out.
1108 * Remove the ones that did.
1109 */
1110 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) {
1111 int mac_queue = mvmsta->vif->hw_queue[tid_to_mac80211_ac[tid]];
1112
1113 mvmsta->tid_data[tid].txq_id = IEEE80211_INVAL_HW_QUEUE;
1114 mvm->queue_info[queue].hw_queue_to_mac80211 &= ~BIT(mac_queue);
1115 mvm->queue_info[queue].hw_queue_refcount--;
1116 mvm->queue_info[queue].tid_bitmap &= ~BIT(tid);
1117 mvmsta->tid_data[tid].is_tid_active = false;
1118
1119 IWL_DEBUG_TX_QUEUES(mvm,
1120 "Removing inactive TID %d from shared Q:%d\n",
1121 tid, queue);
1122 }
1123
1124 IWL_DEBUG_TX_QUEUES(mvm,
1125 "TXQ #%d left with tid bitmap 0x%x\n", queue,
1126 mvm->queue_info[queue].tid_bitmap);
1127
1128 /*
1129 * There may be different TIDs with the same mac queues, so make
1130 * sure all TIDs have existing corresponding mac queues enabled
1131 */
1132 tid_bitmap = mvm->queue_info[queue].tid_bitmap;
1133 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) {
1134 mvm->queue_info[queue].hw_queue_to_mac80211 |=
1135 BIT(mvmsta->vif->hw_queue[tid_to_mac80211_ac[tid]]);
1136 }
1137
1138 /* If the queue is marked as shared - "unshare" it */
1139 if (mvm->queue_info[queue].hw_queue_refcount == 1 &&
1140 mvm->queue_info[queue].status == IWL_MVM_QUEUE_SHARED) {
1141 mvm->queue_info[queue].status = IWL_MVM_QUEUE_RECONFIGURING;
1142 IWL_DEBUG_TX_QUEUES(mvm, "Marking Q:%d for reconfig\n",
1143 queue);
1144 }
1145}
1146
1147void iwl_mvm_inactivity_check(struct iwl_mvm *mvm)
1148{
1149 unsigned long timeout_queues_map = 0;
1150 unsigned long now = jiffies;
1151 int i;
1152
1153 spin_lock_bh(&mvm->queue_info_lock);
1154 for (i = 0; i < IWL_MAX_HW_QUEUES; i++)
1155 if (mvm->queue_info[i].hw_queue_refcount > 0)
1156 timeout_queues_map |= BIT(i);
1157 spin_unlock_bh(&mvm->queue_info_lock);
1158
1159 rcu_read_lock();
1160
1161 /*
1162 * If a queue time outs - mark it as INACTIVE (don't remove right away
1163 * if we don't have to.) This is an optimization in case traffic comes
1164 * later, and we don't HAVE to use a currently-inactive queue
1165 */
1166 for_each_set_bit(i, &timeout_queues_map, IWL_MAX_HW_QUEUES) {
1167 struct ieee80211_sta *sta;
1168 struct iwl_mvm_sta *mvmsta;
1169 u8 sta_id;
1170 int tid;
1171 unsigned long inactive_tid_bitmap = 0;
1172 unsigned long queue_tid_bitmap;
1173
1174 spin_lock_bh(&mvm->queue_info_lock);
1175 queue_tid_bitmap = mvm->queue_info[i].tid_bitmap;
1176
1177 /* If TXQ isn't in active use anyway - nothing to do here... */
1178 if (mvm->queue_info[i].status != IWL_MVM_QUEUE_READY &&
1179 mvm->queue_info[i].status != IWL_MVM_QUEUE_SHARED) {
1180 spin_unlock_bh(&mvm->queue_info_lock);
1181 continue;
1182 }
1183
1184 /* Check to see if there are inactive TIDs on this queue */
1185 for_each_set_bit(tid, &queue_tid_bitmap,
1186 IWL_MAX_TID_COUNT + 1) {
1187 if (time_after(mvm->queue_info[i].last_frame_time[tid] +
1188 IWL_MVM_DQA_QUEUE_TIMEOUT, now))
1189 continue;
1190
1191 inactive_tid_bitmap |= BIT(tid);
1192 }
1193 spin_unlock_bh(&mvm->queue_info_lock);
1194
1195 /* If all TIDs are active - finish check on this queue */
1196 if (!inactive_tid_bitmap)
1197 continue;
1198
1199 /*
1200 * If we are here - the queue hadn't been served recently and is
1201 * in use
1202 */
1203
1204 sta_id = mvm->queue_info[i].ra_sta_id;
1205 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
1206
1207 /*
1208 * If the STA doesn't exist anymore, it isn't an error. It could
1209 * be that it was removed since getting the queues, and in this
1210 * case it should've inactivated its queues anyway.
1211 */
1212 if (IS_ERR_OR_NULL(sta))
1213 continue;
1214
1215 mvmsta = iwl_mvm_sta_from_mac80211(sta);
1216
1217 spin_lock_bh(&mvmsta->lock);
1218 spin_lock(&mvm->queue_info_lock);
1219 iwl_mvm_remove_inactive_tids(mvm, mvmsta, i,
1220 inactive_tid_bitmap);
1221 spin_unlock(&mvm->queue_info_lock);
1222 spin_unlock_bh(&mvmsta->lock);
1223 }
1224
1225 rcu_read_unlock();
1226}
1227
1228void iwl_mvm_get_sync_time(struct iwl_mvm *mvm, u32 *gp2, u64 *boottime)
1229{
1230 bool ps_disabled;
1231
1232 lockdep_assert_held(&mvm->mutex);
1233
1234 /* Disable power save when reading GP2 */
1235 ps_disabled = mvm->ps_disabled;
1236 if (!ps_disabled) {
1237 mvm->ps_disabled = true;
1238 iwl_mvm_power_update_device(mvm);
1239 }
1240
1241 *gp2 = iwl_read_prph(mvm->trans, DEVICE_SYSTEM_TIME_REG);
1242 *boottime = ktime_get_boot_ns();
1243
1244 if (!ps_disabled) {
1245 mvm->ps_disabled = ps_disabled;
1246 iwl_mvm_power_update_device(mvm);
1247 }
1248}
1249
1250int iwl_mvm_send_lqm_cmd(struct ieee80211_vif *vif,
1251 enum iwl_lqm_cmd_operatrions operation,
1252 u32 duration, u32 timeout)
1253{
1254 struct iwl_mvm_vif *mvm_vif = iwl_mvm_vif_from_mac80211(vif);
1255 struct iwl_link_qual_msrmnt_cmd cmd = {
1256 .cmd_operation = cpu_to_le32(operation),
1257 .mac_id = cpu_to_le32(mvm_vif->id),
1258 .measurement_time = cpu_to_le32(duration),
1259 .timeout = cpu_to_le32(timeout),
1260 };
1261 u32 cmdid =
1262 iwl_cmd_id(LINK_QUALITY_MEASUREMENT_CMD, MAC_CONF_GROUP, 0);
1263 int ret;
1264
1265 if (!fw_has_capa(&mvm_vif->mvm->fw->ucode_capa,
1266 IWL_UCODE_TLV_CAPA_LQM_SUPPORT))
1267 return -EOPNOTSUPP;
1268
1269 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p)
1270 return -EINVAL;
1271
1272 switch (operation) {
1273 case LQM_CMD_OPERATION_START_MEASUREMENT:
1274 if (iwl_mvm_lqm_active(mvm_vif->mvm))
1275 return -EBUSY;
1276 if (!vif->bss_conf.assoc)
1277 return -EINVAL;
1278 mvm_vif->lqm_active = true;
1279 break;
1280 case LQM_CMD_OPERATION_STOP_MEASUREMENT:
1281 if (!iwl_mvm_lqm_active(mvm_vif->mvm))
1282 return -EINVAL;
1283 break;
1284 default:
1285 return -EINVAL;
1286 }
1287
1288 ret = iwl_mvm_send_cmd_pdu(mvm_vif->mvm, cmdid, 0, sizeof(cmd),
1289 &cmd);
1290
1291 /* command failed - roll back lqm_active state */
1292 if (ret) {
1293 mvm_vif->lqm_active =
1294 operation == LQM_CMD_OPERATION_STOP_MEASUREMENT;
1295 }
1296
1297 return ret;
1298}
1299
1300static void iwl_mvm_lqm_active_iterator(void *_data, u8 *mac,
1301 struct ieee80211_vif *vif)
1302{
1303 struct iwl_mvm_vif *mvm_vif = iwl_mvm_vif_from_mac80211(vif);
1304 bool *lqm_active = _data;
1305
1306 *lqm_active = *lqm_active || mvm_vif->lqm_active;
1307}
1308
1309bool iwl_mvm_lqm_active(struct iwl_mvm *mvm)
1310{
1311 bool ret = false;
1312
1313 lockdep_assert_held(&mvm->mutex);
1314 ieee80211_iterate_active_interfaces_atomic(
1315 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1316 iwl_mvm_lqm_active_iterator, &ret);
1317
1318 return ret;
1319}