1 // SPDX-License-Identifier: BSD-3-Clause-Clear
2 /*
3 * Copyright (c) 2018-2021 The Linux Foundation. All rights reserved.
4 * Copyright (c) 2021-2022 Qualcomm Innovation Center, Inc. All rights reserved.
5 */
6 #include <linux/rtnetlink.h>
7 #include "core.h"
8 #include "debug.h"
9
10 /* World regdom to be used in case default regd from fw is unavailable */
11 #define ATH12K_2GHZ_CH01_11 REG_RULE(2412 - 10, 2462 + 10, 40, 0, 20, 0)
12 #define ATH12K_5GHZ_5150_5350 REG_RULE(5150 - 10, 5350 + 10, 80, 0, 30,\
13 NL80211_RRF_NO_IR)
14 #define ATH12K_5GHZ_5725_5850 REG_RULE(5725 - 10, 5850 + 10, 80, 0, 30,\
15 NL80211_RRF_NO_IR)
16
17 #define ETSI_WEATHER_RADAR_BAND_LOW 5590
18 #define ETSI_WEATHER_RADAR_BAND_HIGH 5650
19 #define ETSI_WEATHER_RADAR_BAND_CAC_TIMEOUT 600000
20
21 static const struct ieee80211_regdomain ath12k_world_regd = {
22 .n_reg_rules = 3,
23 .alpha2 = "00",
24 .reg_rules = {
25 ATH12K_2GHZ_CH01_11,
26 ATH12K_5GHZ_5150_5350,
27 ATH12K_5GHZ_5725_5850,
28 }
29 };
30
ath12k_regdom_changes(struct ath12k * ar,char * alpha2)31 static bool ath12k_regdom_changes(struct ath12k *ar, char *alpha2)
32 {
33 const struct ieee80211_regdomain *regd;
34
35 regd = rcu_dereference_rtnl(ar->hw->wiphy->regd);
36 /* This can happen during wiphy registration where the previous
37 * user request is received before we update the regd received
38 * from firmware.
39 */
40 if (!regd)
41 return true;
42
43 return memcmp(regd->alpha2, alpha2, 2) != 0;
44 }
45
46 static void
ath12k_reg_notifier(struct wiphy * wiphy,struct regulatory_request * request)47 ath12k_reg_notifier(struct wiphy *wiphy, struct regulatory_request *request)
48 {
49 struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
50 struct ath12k_wmi_init_country_arg arg;
51 struct ath12k *ar = hw->priv;
52 int ret;
53
54 ath12k_dbg(ar->ab, ATH12K_DBG_REG,
55 "Regulatory Notification received for %s\n", wiphy_name(wiphy));
56
57 /* Currently supporting only General User Hints. Cell base user
58 * hints to be handled later.
59 * Hints from other sources like Core, Beacons are not expected for
60 * self managed wiphy's
61 */
62 if (!(request->initiator == NL80211_REGDOM_SET_BY_USER &&
63 request->user_reg_hint_type == NL80211_USER_REG_HINT_USER)) {
64 ath12k_warn(ar->ab, "Unexpected Regulatory event for this wiphy\n");
65 return;
66 }
67
68 if (!IS_ENABLED(CONFIG_ATH_REG_DYNAMIC_USER_REG_HINTS)) {
69 ath12k_dbg(ar->ab, ATH12K_DBG_REG,
70 "Country Setting is not allowed\n");
71 return;
72 }
73
74 if (!ath12k_regdom_changes(ar, request->alpha2)) {
75 ath12k_dbg(ar->ab, ATH12K_DBG_REG, "Country is already set\n");
76 return;
77 }
78
79 /* Set the country code to the firmware and wait for
80 * the WMI_REG_CHAN_LIST_CC EVENT for updating the
81 * reg info
82 */
83 arg.flags = ALPHA_IS_SET;
84 memcpy(&arg.cc_info.alpha2, request->alpha2, 2);
85 arg.cc_info.alpha2[2] = 0;
86
87 ret = ath12k_wmi_send_init_country_cmd(ar, &arg);
88 if (ret)
89 ath12k_warn(ar->ab,
90 "INIT Country code set to fw failed : %d\n", ret);
91 }
92
ath12k_reg_update_chan_list(struct ath12k * ar)93 int ath12k_reg_update_chan_list(struct ath12k *ar)
94 {
95 struct ieee80211_supported_band **bands;
96 struct ath12k_wmi_scan_chan_list_arg *arg;
97 struct ieee80211_channel *channel;
98 struct ieee80211_hw *hw = ar->hw;
99 struct ath12k_wmi_channel_arg *ch;
100 enum nl80211_band band;
101 int num_channels = 0;
102 int i, ret;
103
104 bands = hw->wiphy->bands;
105 for (band = 0; band < NUM_NL80211_BANDS; band++) {
106 if (!bands[band])
107 continue;
108
109 for (i = 0; i < bands[band]->n_channels; i++) {
110 if (bands[band]->channels[i].flags &
111 IEEE80211_CHAN_DISABLED)
112 continue;
113
114 num_channels++;
115 }
116 }
117
118 if (WARN_ON(!num_channels))
119 return -EINVAL;
120
121 arg = kzalloc(struct_size(arg, channel, num_channels), GFP_KERNEL);
122
123 if (!arg)
124 return -ENOMEM;
125
126 arg->pdev_id = ar->pdev->pdev_id;
127 arg->nallchans = num_channels;
128
129 ch = arg->channel;
130
131 for (band = 0; band < NUM_NL80211_BANDS; band++) {
132 if (!bands[band])
133 continue;
134
135 for (i = 0; i < bands[band]->n_channels; i++) {
136 channel = &bands[band]->channels[i];
137
138 if (channel->flags & IEEE80211_CHAN_DISABLED)
139 continue;
140
141 /* TODO: Set to true/false based on some condition? */
142 ch->allow_ht = true;
143 ch->allow_vht = true;
144 ch->allow_he = true;
145
146 ch->dfs_set =
147 !!(channel->flags & IEEE80211_CHAN_RADAR);
148 ch->is_chan_passive = !!(channel->flags &
149 IEEE80211_CHAN_NO_IR);
150 ch->is_chan_passive |= ch->dfs_set;
151 ch->mhz = channel->center_freq;
152 ch->cfreq1 = channel->center_freq;
153 ch->minpower = 0;
154 ch->maxpower = channel->max_power * 2;
155 ch->maxregpower = channel->max_reg_power * 2;
156 ch->antennamax = channel->max_antenna_gain * 2;
157
158 /* TODO: Use appropriate phymodes */
159 if (channel->band == NL80211_BAND_2GHZ)
160 ch->phy_mode = MODE_11G;
161 else
162 ch->phy_mode = MODE_11A;
163
164 if (channel->band == NL80211_BAND_6GHZ &&
165 cfg80211_channel_is_psc(channel))
166 ch->psc_channel = true;
167
168 ath12k_dbg(ar->ab, ATH12K_DBG_WMI,
169 "mac channel [%d/%d] freq %d maxpower %d regpower %d antenna %d mode %d\n",
170 i, arg->nallchans,
171 ch->mhz, ch->maxpower, ch->maxregpower,
172 ch->antennamax, ch->phy_mode);
173
174 ch++;
175 /* TODO: use quarrter/half rate, cfreq12, dfs_cfreq2
176 * set_agile, reg_class_idx
177 */
178 }
179 }
180
181 ret = ath12k_wmi_send_scan_chan_list_cmd(ar, arg);
182 kfree(arg);
183
184 return ret;
185 }
186
187 #if defined(__linux__)
188 static void ath12k_copy_regd(struct ieee80211_regdomain *regd_orig,
189 #elif defined(__FreeBSD__)
190 static void ath12k_copy_regd(const struct ieee80211_regdomain *regd_orig,
191 struct ieee80211_regdomain *regd_copy)
192 #endif
193 {
194 u8 i;
195
196 /* The caller should have checked error conditions */
197 memcpy(regd_copy, regd_orig, sizeof(*regd_orig));
198
199 for (i = 0; i < regd_orig->n_reg_rules; i++)
200 memcpy(®d_copy->reg_rules[i], ®d_orig->reg_rules[i],
201 sizeof(struct ieee80211_reg_rule));
202 }
203
204 int ath12k_regd_update(struct ath12k *ar, bool init)
205 {
206 #if defined(__linux__)
207 struct ieee80211_regdomain *regd, *regd_copy = NULL;
208 #elif defined(__FreeBSD__)
209 const struct ieee80211_regdomain *regd;
210 struct ieee80211_regdomain *regd_copy = NULL;
211 #endif
212 int ret, regd_len, pdev_id;
213 struct ath12k_base *ab;
214
215 ab = ar->ab;
216 pdev_id = ar->pdev_idx;
217
218 spin_lock_bh(&ab->base_lock);
219
220 if (init) {
221 /* Apply the regd received during init through
222 * WMI_REG_CHAN_LIST_CC event. In case of failure to
223 * receive the regd, initialize with a default world
224 * regulatory.
225 */
226 if (ab->default_regd[pdev_id]) {
227 regd = ab->default_regd[pdev_id];
228 } else {
229 ath12k_warn(ab,
230 "failed to receive default regd during init\n");
231 #if defined(__linux__)
232 regd = (struct ieee80211_regdomain *)&ath12k_world_regd;
233 #elif defined(__FreeBSD__)
234 regd = (const struct ieee80211_regdomain *)&ath12k_world_regd;
235 #endif
236 }
237 } else {
238 regd = ab->new_regd[pdev_id];
239 }
240
241 if (!regd) {
242 ret = -EINVAL;
243 spin_unlock_bh(&ab->base_lock);
244 goto err;
245 }
246
247 regd_len = sizeof(*regd) + (regd->n_reg_rules *
248 sizeof(struct ieee80211_reg_rule));
249
250 regd_copy = kzalloc(regd_len, GFP_ATOMIC);
251 if (regd_copy)
252 ath12k_copy_regd(regd, regd_copy);
253
254 spin_unlock_bh(&ab->base_lock);
255
256 if (!regd_copy) {
257 ret = -ENOMEM;
258 goto err;
259 }
260
261 rtnl_lock();
262 wiphy_lock(ar->hw->wiphy);
263 ret = regulatory_set_wiphy_regd_sync(ar->hw->wiphy, regd_copy);
264 wiphy_unlock(ar->hw->wiphy);
265 rtnl_unlock();
266
267 kfree(regd_copy);
268
269 if (ret)
270 goto err;
271
272 if (ar->state == ATH12K_STATE_ON) {
273 ret = ath12k_reg_update_chan_list(ar);
274 if (ret)
275 goto err;
276 }
277
278 return 0;
279 err:
280 ath12k_warn(ab, "failed to perform regd update : %d\n", ret);
281 return ret;
282 }
283
284 static enum nl80211_dfs_regions
285 ath12k_map_fw_dfs_region(enum ath12k_dfs_region dfs_region)
286 {
287 switch (dfs_region) {
288 case ATH12K_DFS_REG_FCC:
289 case ATH12K_DFS_REG_CN:
290 return NL80211_DFS_FCC;
291 case ATH12K_DFS_REG_ETSI:
292 case ATH12K_DFS_REG_KR:
293 return NL80211_DFS_ETSI;
294 case ATH12K_DFS_REG_MKK:
295 case ATH12K_DFS_REG_MKK_N:
296 return NL80211_DFS_JP;
297 default:
298 return NL80211_DFS_UNSET;
299 }
300 }
301
302 static u32 ath12k_map_fw_reg_flags(u16 reg_flags)
303 {
304 u32 flags = 0;
305
306 if (reg_flags & REGULATORY_CHAN_NO_IR)
307 flags = NL80211_RRF_NO_IR;
308
309 if (reg_flags & REGULATORY_CHAN_RADAR)
310 flags |= NL80211_RRF_DFS;
311
312 if (reg_flags & REGULATORY_CHAN_NO_OFDM)
313 flags |= NL80211_RRF_NO_OFDM;
314
315 if (reg_flags & REGULATORY_CHAN_INDOOR_ONLY)
316 flags |= NL80211_RRF_NO_OUTDOOR;
317
318 if (reg_flags & REGULATORY_CHAN_NO_HT40)
319 flags |= NL80211_RRF_NO_HT40;
320
321 if (reg_flags & REGULATORY_CHAN_NO_80MHZ)
322 flags |= NL80211_RRF_NO_80MHZ;
323
324 if (reg_flags & REGULATORY_CHAN_NO_160MHZ)
325 flags |= NL80211_RRF_NO_160MHZ;
326
327 return flags;
328 }
329
330 static bool
331 ath12k_reg_can_intersect(struct ieee80211_reg_rule *rule1,
332 struct ieee80211_reg_rule *rule2)
333 {
334 u32 start_freq1, end_freq1;
335 u32 start_freq2, end_freq2;
336
337 start_freq1 = rule1->freq_range.start_freq_khz;
338 start_freq2 = rule2->freq_range.start_freq_khz;
339
340 end_freq1 = rule1->freq_range.end_freq_khz;
341 end_freq2 = rule2->freq_range.end_freq_khz;
342
343 if ((start_freq1 >= start_freq2 &&
344 start_freq1 < end_freq2) ||
345 (start_freq2 > start_freq1 &&
346 start_freq2 < end_freq1))
347 return true;
348
349 /* TODO: Should we restrict intersection feasibility
350 * based on min bandwidth of the intersected region also,
351 * say the intersected rule should have a min bandwidth
352 * of 20MHz?
353 */
354
355 return false;
356 }
357
358 static void ath12k_reg_intersect_rules(struct ieee80211_reg_rule *rule1,
359 struct ieee80211_reg_rule *rule2,
360 struct ieee80211_reg_rule *new_rule)
361 {
362 u32 start_freq1, end_freq1;
363 u32 start_freq2, end_freq2;
364 u32 freq_diff, max_bw;
365
366 start_freq1 = rule1->freq_range.start_freq_khz;
367 start_freq2 = rule2->freq_range.start_freq_khz;
368
369 end_freq1 = rule1->freq_range.end_freq_khz;
370 end_freq2 = rule2->freq_range.end_freq_khz;
371
372 new_rule->freq_range.start_freq_khz = max_t(u32, start_freq1,
373 start_freq2);
374 new_rule->freq_range.end_freq_khz = min_t(u32, end_freq1, end_freq2);
375
376 freq_diff = new_rule->freq_range.end_freq_khz -
377 new_rule->freq_range.start_freq_khz;
378 max_bw = min_t(u32, rule1->freq_range.max_bandwidth_khz,
379 rule2->freq_range.max_bandwidth_khz);
380 new_rule->freq_range.max_bandwidth_khz = min_t(u32, max_bw, freq_diff);
381
382 new_rule->power_rule.max_antenna_gain =
383 min_t(u32, rule1->power_rule.max_antenna_gain,
384 rule2->power_rule.max_antenna_gain);
385
386 new_rule->power_rule.max_eirp = min_t(u32, rule1->power_rule.max_eirp,
387 rule2->power_rule.max_eirp);
388
389 /* Use the flags of both the rules */
390 new_rule->flags = rule1->flags | rule2->flags;
391
392 /* To be safe, lts use the max cac timeout of both rules */
393 new_rule->dfs_cac_ms = max_t(u32, rule1->dfs_cac_ms,
394 rule2->dfs_cac_ms);
395 }
396
397 static struct ieee80211_regdomain *
398 ath12k_regd_intersect(struct ieee80211_regdomain *default_regd,
399 struct ieee80211_regdomain *curr_regd)
400 {
401 u8 num_old_regd_rules, num_curr_regd_rules, num_new_regd_rules;
402 struct ieee80211_reg_rule *old_rule, *curr_rule, *new_rule;
403 struct ieee80211_regdomain *new_regd = NULL;
404 u8 i, j, k;
405
406 num_old_regd_rules = default_regd->n_reg_rules;
407 num_curr_regd_rules = curr_regd->n_reg_rules;
408 num_new_regd_rules = 0;
409
410 /* Find the number of intersecting rules to allocate new regd memory */
411 for (i = 0; i < num_old_regd_rules; i++) {
412 old_rule = default_regd->reg_rules + i;
413 for (j = 0; j < num_curr_regd_rules; j++) {
414 curr_rule = curr_regd->reg_rules + j;
415
416 if (ath12k_reg_can_intersect(old_rule, curr_rule))
417 num_new_regd_rules++;
418 }
419 }
420
421 if (!num_new_regd_rules)
422 return NULL;
423
424 new_regd = kzalloc(sizeof(*new_regd) + (num_new_regd_rules *
425 sizeof(struct ieee80211_reg_rule)),
426 GFP_ATOMIC);
427
428 if (!new_regd)
429 return NULL;
430
431 /* We set the new country and dfs region directly and only trim
432 * the freq, power, antenna gain by intersecting with the
433 * default regdomain. Also MAX of the dfs cac timeout is selected.
434 */
435 new_regd->n_reg_rules = num_new_regd_rules;
436 memcpy(new_regd->alpha2, curr_regd->alpha2, sizeof(new_regd->alpha2));
437 new_regd->dfs_region = curr_regd->dfs_region;
438 new_rule = new_regd->reg_rules;
439
440 for (i = 0, k = 0; i < num_old_regd_rules; i++) {
441 old_rule = default_regd->reg_rules + i;
442 for (j = 0; j < num_curr_regd_rules; j++) {
443 curr_rule = curr_regd->reg_rules + j;
444
445 if (ath12k_reg_can_intersect(old_rule, curr_rule))
446 ath12k_reg_intersect_rules(old_rule, curr_rule,
447 (new_rule + k++));
448 }
449 }
450 return new_regd;
451 }
452
453 static const char *
454 ath12k_reg_get_regdom_str(enum nl80211_dfs_regions dfs_region)
455 {
456 switch (dfs_region) {
457 case NL80211_DFS_FCC:
458 return "FCC";
459 case NL80211_DFS_ETSI:
460 return "ETSI";
461 case NL80211_DFS_JP:
462 return "JP";
463 default:
464 return "UNSET";
465 }
466 }
467
468 static u16
469 ath12k_reg_adjust_bw(u16 start_freq, u16 end_freq, u16 max_bw)
470 {
471 u16 bw;
472
473 bw = end_freq - start_freq;
474 bw = min_t(u16, bw, max_bw);
475
476 if (bw >= 80 && bw < 160)
477 bw = 80;
478 else if (bw >= 40 && bw < 80)
479 bw = 40;
480 else if (bw < 40)
481 bw = 20;
482
483 return bw;
484 }
485
486 static void
487 ath12k_reg_update_rule(struct ieee80211_reg_rule *reg_rule, u32 start_freq,
488 u32 end_freq, u32 bw, u32 ant_gain, u32 reg_pwr,
489 u32 reg_flags)
490 {
491 reg_rule->freq_range.start_freq_khz = MHZ_TO_KHZ(start_freq);
492 reg_rule->freq_range.end_freq_khz = MHZ_TO_KHZ(end_freq);
493 reg_rule->freq_range.max_bandwidth_khz = MHZ_TO_KHZ(bw);
494 reg_rule->power_rule.max_antenna_gain = DBI_TO_MBI(ant_gain);
495 reg_rule->power_rule.max_eirp = DBM_TO_MBM(reg_pwr);
496 reg_rule->flags = reg_flags;
497 }
498
499 static void
500 ath12k_reg_update_weather_radar_band(struct ath12k_base *ab,
501 struct ieee80211_regdomain *regd,
502 struct ath12k_reg_rule *reg_rule,
503 u8 *rule_idx, u32 flags, u16 max_bw)
504 {
505 u32 end_freq;
506 u16 bw;
507 u8 i;
508
509 i = *rule_idx;
510
511 bw = ath12k_reg_adjust_bw(reg_rule->start_freq,
512 ETSI_WEATHER_RADAR_BAND_LOW, max_bw);
513
514 ath12k_reg_update_rule(regd->reg_rules + i, reg_rule->start_freq,
515 ETSI_WEATHER_RADAR_BAND_LOW, bw,
516 reg_rule->ant_gain, reg_rule->reg_power,
517 flags);
518
519 ath12k_dbg(ab, ATH12K_DBG_REG,
520 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n",
521 i + 1, reg_rule->start_freq, ETSI_WEATHER_RADAR_BAND_LOW,
522 bw, reg_rule->ant_gain, reg_rule->reg_power,
523 regd->reg_rules[i].dfs_cac_ms,
524 flags);
525
526 if (reg_rule->end_freq > ETSI_WEATHER_RADAR_BAND_HIGH)
527 end_freq = ETSI_WEATHER_RADAR_BAND_HIGH;
528 else
529 end_freq = reg_rule->end_freq;
530
531 bw = ath12k_reg_adjust_bw(ETSI_WEATHER_RADAR_BAND_LOW, end_freq,
532 max_bw);
533
534 i++;
535
536 ath12k_reg_update_rule(regd->reg_rules + i,
537 ETSI_WEATHER_RADAR_BAND_LOW, end_freq, bw,
538 reg_rule->ant_gain, reg_rule->reg_power,
539 flags);
540
541 regd->reg_rules[i].dfs_cac_ms = ETSI_WEATHER_RADAR_BAND_CAC_TIMEOUT;
542
543 ath12k_dbg(ab, ATH12K_DBG_REG,
544 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n",
545 i + 1, ETSI_WEATHER_RADAR_BAND_LOW, end_freq,
546 bw, reg_rule->ant_gain, reg_rule->reg_power,
547 regd->reg_rules[i].dfs_cac_ms,
548 flags);
549
550 if (end_freq == reg_rule->end_freq) {
551 regd->n_reg_rules--;
552 *rule_idx = i;
553 return;
554 }
555
556 bw = ath12k_reg_adjust_bw(ETSI_WEATHER_RADAR_BAND_HIGH,
557 reg_rule->end_freq, max_bw);
558
559 i++;
560
561 ath12k_reg_update_rule(regd->reg_rules + i, ETSI_WEATHER_RADAR_BAND_HIGH,
562 reg_rule->end_freq, bw,
563 reg_rule->ant_gain, reg_rule->reg_power,
564 flags);
565
566 ath12k_dbg(ab, ATH12K_DBG_REG,
567 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n",
568 i + 1, ETSI_WEATHER_RADAR_BAND_HIGH, reg_rule->end_freq,
569 bw, reg_rule->ant_gain, reg_rule->reg_power,
570 regd->reg_rules[i].dfs_cac_ms,
571 flags);
572
573 *rule_idx = i;
574 }
575
576 struct ieee80211_regdomain *
577 ath12k_reg_build_regd(struct ath12k_base *ab,
578 struct ath12k_reg_info *reg_info, bool intersect)
579 {
580 struct ieee80211_regdomain *tmp_regd, *default_regd, *new_regd = NULL;
581 struct ath12k_reg_rule *reg_rule;
582 u8 i = 0, j = 0, k = 0;
583 u8 num_rules;
584 u16 max_bw;
585 u32 flags;
586 char alpha2[3];
587
588 num_rules = reg_info->num_5g_reg_rules + reg_info->num_2g_reg_rules;
589
590 /* FIXME: Currently taking reg rules for 6G only from Indoor AP mode list.
591 * This can be updated to choose the combination dynamically based on AP
592 * type and client type, after complete 6G regulatory support is added.
593 */
594 if (reg_info->is_ext_reg_event)
595 num_rules += reg_info->num_6g_reg_rules_ap[WMI_REG_INDOOR_AP];
596
597 if (!num_rules)
598 goto ret;
599
600 /* Add max additional rules to accommodate weather radar band */
601 if (reg_info->dfs_region == ATH12K_DFS_REG_ETSI)
602 num_rules += 2;
603
604 tmp_regd = kzalloc(sizeof(*tmp_regd) +
605 (num_rules * sizeof(struct ieee80211_reg_rule)),
606 GFP_ATOMIC);
607 if (!tmp_regd)
608 goto ret;
609
610 memcpy(tmp_regd->alpha2, reg_info->alpha2, REG_ALPHA2_LEN + 1);
611 memcpy(alpha2, reg_info->alpha2, REG_ALPHA2_LEN + 1);
612 alpha2[2] = '\0';
613 tmp_regd->dfs_region = ath12k_map_fw_dfs_region(reg_info->dfs_region);
614
615 ath12k_dbg(ab, ATH12K_DBG_REG,
616 "\r\nCountry %s, CFG Regdomain %s FW Regdomain %d, num_reg_rules %d\n",
617 alpha2, ath12k_reg_get_regdom_str(tmp_regd->dfs_region),
618 reg_info->dfs_region, num_rules);
619 /* Update reg_rules[] below. Firmware is expected to
620 * send these rules in order(2G rules first and then 5G)
621 */
622 for (; i < num_rules; i++) {
623 if (reg_info->num_2g_reg_rules &&
624 (i < reg_info->num_2g_reg_rules)) {
625 reg_rule = reg_info->reg_rules_2g_ptr + i;
626 max_bw = min_t(u16, reg_rule->max_bw,
627 reg_info->max_bw_2g);
628 flags = 0;
629 } else if (reg_info->num_5g_reg_rules &&
630 (j < reg_info->num_5g_reg_rules)) {
631 reg_rule = reg_info->reg_rules_5g_ptr + j++;
632 max_bw = min_t(u16, reg_rule->max_bw,
633 reg_info->max_bw_5g);
634
635 /* FW doesn't pass NL80211_RRF_AUTO_BW flag for
636 * BW Auto correction, we can enable this by default
637 * for all 5G rules here. The regulatory core performs
638 * BW correction if required and applies flags as
639 * per other BW rule flags we pass from here
640 */
641 flags = NL80211_RRF_AUTO_BW;
642 } else if (reg_info->is_ext_reg_event &&
643 reg_info->num_6g_reg_rules_ap[WMI_REG_INDOOR_AP] &&
644 (k < reg_info->num_6g_reg_rules_ap[WMI_REG_INDOOR_AP])) {
645 reg_rule = reg_info->reg_rules_6g_ap_ptr[WMI_REG_INDOOR_AP] + k++;
646 max_bw = min_t(u16, reg_rule->max_bw,
647 reg_info->max_bw_6g_ap[WMI_REG_INDOOR_AP]);
648 flags = NL80211_RRF_AUTO_BW;
649 } else {
650 break;
651 }
652
653 flags |= ath12k_map_fw_reg_flags(reg_rule->flags);
654
655 ath12k_reg_update_rule(tmp_regd->reg_rules + i,
656 reg_rule->start_freq,
657 reg_rule->end_freq, max_bw,
658 reg_rule->ant_gain, reg_rule->reg_power,
659 flags);
660
661 /* Update dfs cac timeout if the dfs domain is ETSI and the
662 * new rule covers weather radar band.
663 * Default value of '0' corresponds to 60s timeout, so no
664 * need to update that for other rules.
665 */
666 if (flags & NL80211_RRF_DFS &&
667 reg_info->dfs_region == ATH12K_DFS_REG_ETSI &&
668 (reg_rule->end_freq > ETSI_WEATHER_RADAR_BAND_LOW &&
669 reg_rule->start_freq < ETSI_WEATHER_RADAR_BAND_HIGH)){
670 ath12k_reg_update_weather_radar_band(ab, tmp_regd,
671 reg_rule, &i,
672 flags, max_bw);
673 continue;
674 }
675
676 if (reg_info->is_ext_reg_event) {
677 ath12k_dbg(ab, ATH12K_DBG_REG, "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d) (%d, %d)\n",
678 i + 1, reg_rule->start_freq, reg_rule->end_freq,
679 max_bw, reg_rule->ant_gain, reg_rule->reg_power,
680 tmp_regd->reg_rules[i].dfs_cac_ms,
681 flags, reg_rule->psd_flag, reg_rule->psd_eirp);
682 } else {
683 ath12k_dbg(ab, ATH12K_DBG_REG,
684 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n",
685 i + 1, reg_rule->start_freq, reg_rule->end_freq,
686 max_bw, reg_rule->ant_gain, reg_rule->reg_power,
687 tmp_regd->reg_rules[i].dfs_cac_ms,
688 flags);
689 }
690 }
691
692 tmp_regd->n_reg_rules = i;
693
694 if (intersect) {
695 default_regd = ab->default_regd[reg_info->phy_id];
696
697 /* Get a new regd by intersecting the received regd with
698 * our default regd.
699 */
700 new_regd = ath12k_regd_intersect(default_regd, tmp_regd);
701 kfree(tmp_regd);
702 if (!new_regd) {
703 ath12k_warn(ab, "Unable to create intersected regdomain\n");
704 goto ret;
705 }
706 } else {
707 new_regd = tmp_regd;
708 }
709
710 ret:
711 return new_regd;
712 }
713
714 void ath12k_regd_update_work(struct work_struct *work)
715 {
716 struct ath12k *ar = container_of(work, struct ath12k,
717 regd_update_work);
718 int ret;
719
720 ret = ath12k_regd_update(ar, false);
721 if (ret) {
722 /* Firmware has already moved to the new regd. We need
723 * to maintain channel consistency across FW, Host driver
724 * and userspace. Hence as a fallback mechanism we can set
725 * the prev or default country code to the firmware.
726 */
727 /* TODO: Implement Fallback Mechanism */
728 }
729 }
730
731 void ath12k_reg_init(struct ath12k *ar)
732 {
733 ar->hw->wiphy->regulatory_flags = REGULATORY_WIPHY_SELF_MANAGED;
734 ar->hw->wiphy->reg_notifier = ath12k_reg_notifier;
735 }
736
737 void ath12k_reg_free(struct ath12k_base *ab)
738 {
739 int i;
740
741 for (i = 0; i < ab->hw_params->max_radios; i++) {
742 kfree(ab->default_regd[i]);
743 kfree(ab->new_regd[i]);
744 }
745 }
746