1 // SPDX-License-Identifier: BSD-3-Clause-Clear
2 /*
3 * Copyright (c) 2018-2021 The Linux Foundation. All rights reserved.
4 * Copyright (c) 2021-2023 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 (!(ar->mac.sbands[band].channels && 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 (!(ar->mac.sbands[band].channels && 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
ath12k_copy_regd(struct ieee80211_regdomain * regd_orig,struct ieee80211_regdomain * regd_copy)187 static void ath12k_copy_regd(struct ieee80211_regdomain *regd_orig,
188 struct ieee80211_regdomain *regd_copy)
189 {
190 u8 i;
191
192 /* The caller should have checked error conditions */
193 memcpy(regd_copy, regd_orig, sizeof(*regd_orig));
194
195 for (i = 0; i < regd_orig->n_reg_rules; i++)
196 memcpy(®d_copy->reg_rules[i], ®d_orig->reg_rules[i],
197 sizeof(struct ieee80211_reg_rule));
198 }
199
ath12k_regd_update(struct ath12k * ar,bool init)200 int ath12k_regd_update(struct ath12k *ar, bool init)
201 {
202 struct ieee80211_regdomain *regd, *regd_copy = NULL;
203 int ret, regd_len, pdev_id;
204 struct ath12k_base *ab;
205
206 ab = ar->ab;
207 pdev_id = ar->pdev_idx;
208
209 spin_lock_bh(&ab->base_lock);
210
211 if (init) {
212 /* Apply the regd received during init through
213 * WMI_REG_CHAN_LIST_CC event. In case of failure to
214 * receive the regd, initialize with a default world
215 * regulatory.
216 */
217 if (ab->default_regd[pdev_id]) {
218 regd = ab->default_regd[pdev_id];
219 } else {
220 ath12k_warn(ab,
221 "failed to receive default regd during init\n");
222 regd = (struct ieee80211_regdomain *)&ath12k_world_regd;
223 }
224 } else {
225 regd = ab->new_regd[pdev_id];
226 }
227
228 if (!regd) {
229 ret = -EINVAL;
230 spin_unlock_bh(&ab->base_lock);
231 goto err;
232 }
233
234 regd_len = sizeof(*regd) + (regd->n_reg_rules *
235 sizeof(struct ieee80211_reg_rule));
236
237 regd_copy = kzalloc(regd_len, GFP_ATOMIC);
238 if (regd_copy)
239 ath12k_copy_regd(regd, regd_copy);
240
241 spin_unlock_bh(&ab->base_lock);
242
243 if (!regd_copy) {
244 ret = -ENOMEM;
245 goto err;
246 }
247
248 rtnl_lock();
249 wiphy_lock(ar->hw->wiphy);
250 ret = regulatory_set_wiphy_regd_sync(ar->hw->wiphy, regd_copy);
251 wiphy_unlock(ar->hw->wiphy);
252 rtnl_unlock();
253
254 kfree(regd_copy);
255
256 if (ret)
257 goto err;
258
259 if (ar->state == ATH12K_STATE_ON) {
260 ret = ath12k_reg_update_chan_list(ar);
261 if (ret)
262 goto err;
263 }
264
265 return 0;
266 err:
267 ath12k_warn(ab, "failed to perform regd update : %d\n", ret);
268 return ret;
269 }
270
271 static enum nl80211_dfs_regions
ath12k_map_fw_dfs_region(enum ath12k_dfs_region dfs_region)272 ath12k_map_fw_dfs_region(enum ath12k_dfs_region dfs_region)
273 {
274 switch (dfs_region) {
275 case ATH12K_DFS_REG_FCC:
276 case ATH12K_DFS_REG_CN:
277 return NL80211_DFS_FCC;
278 case ATH12K_DFS_REG_ETSI:
279 case ATH12K_DFS_REG_KR:
280 return NL80211_DFS_ETSI;
281 case ATH12K_DFS_REG_MKK:
282 case ATH12K_DFS_REG_MKK_N:
283 return NL80211_DFS_JP;
284 default:
285 return NL80211_DFS_UNSET;
286 }
287 }
288
ath12k_map_fw_reg_flags(u16 reg_flags)289 static u32 ath12k_map_fw_reg_flags(u16 reg_flags)
290 {
291 u32 flags = 0;
292
293 if (reg_flags & REGULATORY_CHAN_NO_IR)
294 flags = NL80211_RRF_NO_IR;
295
296 if (reg_flags & REGULATORY_CHAN_RADAR)
297 flags |= NL80211_RRF_DFS;
298
299 if (reg_flags & REGULATORY_CHAN_NO_OFDM)
300 flags |= NL80211_RRF_NO_OFDM;
301
302 if (reg_flags & REGULATORY_CHAN_INDOOR_ONLY)
303 flags |= NL80211_RRF_NO_OUTDOOR;
304
305 if (reg_flags & REGULATORY_CHAN_NO_HT40)
306 flags |= NL80211_RRF_NO_HT40;
307
308 if (reg_flags & REGULATORY_CHAN_NO_80MHZ)
309 flags |= NL80211_RRF_NO_80MHZ;
310
311 if (reg_flags & REGULATORY_CHAN_NO_160MHZ)
312 flags |= NL80211_RRF_NO_160MHZ;
313
314 return flags;
315 }
316
317 static bool
ath12k_reg_can_intersect(struct ieee80211_reg_rule * rule1,struct ieee80211_reg_rule * rule2)318 ath12k_reg_can_intersect(struct ieee80211_reg_rule *rule1,
319 struct ieee80211_reg_rule *rule2)
320 {
321 u32 start_freq1, end_freq1;
322 u32 start_freq2, end_freq2;
323
324 start_freq1 = rule1->freq_range.start_freq_khz;
325 start_freq2 = rule2->freq_range.start_freq_khz;
326
327 end_freq1 = rule1->freq_range.end_freq_khz;
328 end_freq2 = rule2->freq_range.end_freq_khz;
329
330 if ((start_freq1 >= start_freq2 &&
331 start_freq1 < end_freq2) ||
332 (start_freq2 > start_freq1 &&
333 start_freq2 < end_freq1))
334 return true;
335
336 /* TODO: Should we restrict intersection feasibility
337 * based on min bandwidth of the intersected region also,
338 * say the intersected rule should have a min bandwidth
339 * of 20MHz?
340 */
341
342 return false;
343 }
344
ath12k_reg_intersect_rules(struct ieee80211_reg_rule * rule1,struct ieee80211_reg_rule * rule2,struct ieee80211_reg_rule * new_rule)345 static void ath12k_reg_intersect_rules(struct ieee80211_reg_rule *rule1,
346 struct ieee80211_reg_rule *rule2,
347 struct ieee80211_reg_rule *new_rule)
348 {
349 u32 start_freq1, end_freq1;
350 u32 start_freq2, end_freq2;
351 u32 freq_diff, max_bw;
352
353 start_freq1 = rule1->freq_range.start_freq_khz;
354 start_freq2 = rule2->freq_range.start_freq_khz;
355
356 end_freq1 = rule1->freq_range.end_freq_khz;
357 end_freq2 = rule2->freq_range.end_freq_khz;
358
359 new_rule->freq_range.start_freq_khz = max_t(u32, start_freq1,
360 start_freq2);
361 new_rule->freq_range.end_freq_khz = min_t(u32, end_freq1, end_freq2);
362
363 freq_diff = new_rule->freq_range.end_freq_khz -
364 new_rule->freq_range.start_freq_khz;
365 max_bw = min_t(u32, rule1->freq_range.max_bandwidth_khz,
366 rule2->freq_range.max_bandwidth_khz);
367 new_rule->freq_range.max_bandwidth_khz = min_t(u32, max_bw, freq_diff);
368
369 new_rule->power_rule.max_antenna_gain =
370 min_t(u32, rule1->power_rule.max_antenna_gain,
371 rule2->power_rule.max_antenna_gain);
372
373 new_rule->power_rule.max_eirp = min_t(u32, rule1->power_rule.max_eirp,
374 rule2->power_rule.max_eirp);
375
376 /* Use the flags of both the rules */
377 new_rule->flags = rule1->flags | rule2->flags;
378
379 /* To be safe, lts use the max cac timeout of both rules */
380 new_rule->dfs_cac_ms = max_t(u32, rule1->dfs_cac_ms,
381 rule2->dfs_cac_ms);
382 }
383
384 static struct ieee80211_regdomain *
ath12k_regd_intersect(struct ieee80211_regdomain * default_regd,struct ieee80211_regdomain * curr_regd)385 ath12k_regd_intersect(struct ieee80211_regdomain *default_regd,
386 struct ieee80211_regdomain *curr_regd)
387 {
388 u8 num_old_regd_rules, num_curr_regd_rules, num_new_regd_rules;
389 struct ieee80211_reg_rule *old_rule, *curr_rule, *new_rule;
390 struct ieee80211_regdomain *new_regd = NULL;
391 u8 i, j, k;
392
393 num_old_regd_rules = default_regd->n_reg_rules;
394 num_curr_regd_rules = curr_regd->n_reg_rules;
395 num_new_regd_rules = 0;
396
397 /* Find the number of intersecting rules to allocate new regd memory */
398 for (i = 0; i < num_old_regd_rules; i++) {
399 old_rule = default_regd->reg_rules + i;
400 for (j = 0; j < num_curr_regd_rules; j++) {
401 curr_rule = curr_regd->reg_rules + j;
402
403 if (ath12k_reg_can_intersect(old_rule, curr_rule))
404 num_new_regd_rules++;
405 }
406 }
407
408 if (!num_new_regd_rules)
409 return NULL;
410
411 new_regd = kzalloc(sizeof(*new_regd) + (num_new_regd_rules *
412 sizeof(struct ieee80211_reg_rule)),
413 GFP_ATOMIC);
414
415 if (!new_regd)
416 return NULL;
417
418 /* We set the new country and dfs region directly and only trim
419 * the freq, power, antenna gain by intersecting with the
420 * default regdomain. Also MAX of the dfs cac timeout is selected.
421 */
422 new_regd->n_reg_rules = num_new_regd_rules;
423 memcpy(new_regd->alpha2, curr_regd->alpha2, sizeof(new_regd->alpha2));
424 new_regd->dfs_region = curr_regd->dfs_region;
425 new_rule = new_regd->reg_rules;
426
427 for (i = 0, k = 0; i < num_old_regd_rules; i++) {
428 old_rule = default_regd->reg_rules + i;
429 for (j = 0; j < num_curr_regd_rules; j++) {
430 curr_rule = curr_regd->reg_rules + j;
431
432 if (ath12k_reg_can_intersect(old_rule, curr_rule))
433 ath12k_reg_intersect_rules(old_rule, curr_rule,
434 (new_rule + k++));
435 }
436 }
437 return new_regd;
438 }
439
440 static const char *
ath12k_reg_get_regdom_str(enum nl80211_dfs_regions dfs_region)441 ath12k_reg_get_regdom_str(enum nl80211_dfs_regions dfs_region)
442 {
443 switch (dfs_region) {
444 case NL80211_DFS_FCC:
445 return "FCC";
446 case NL80211_DFS_ETSI:
447 return "ETSI";
448 case NL80211_DFS_JP:
449 return "JP";
450 default:
451 return "UNSET";
452 }
453 }
454
455 static u16
ath12k_reg_adjust_bw(u16 start_freq,u16 end_freq,u16 max_bw)456 ath12k_reg_adjust_bw(u16 start_freq, u16 end_freq, u16 max_bw)
457 {
458 u16 bw;
459
460 bw = end_freq - start_freq;
461 bw = min_t(u16, bw, max_bw);
462
463 if (bw >= 80 && bw < 160)
464 bw = 80;
465 else if (bw >= 40 && bw < 80)
466 bw = 40;
467 else if (bw < 40)
468 bw = 20;
469
470 return bw;
471 }
472
473 static void
ath12k_reg_update_rule(struct ieee80211_reg_rule * reg_rule,u32 start_freq,u32 end_freq,u32 bw,u32 ant_gain,u32 reg_pwr,u32 reg_flags)474 ath12k_reg_update_rule(struct ieee80211_reg_rule *reg_rule, u32 start_freq,
475 u32 end_freq, u32 bw, u32 ant_gain, u32 reg_pwr,
476 u32 reg_flags)
477 {
478 reg_rule->freq_range.start_freq_khz = MHZ_TO_KHZ(start_freq);
479 reg_rule->freq_range.end_freq_khz = MHZ_TO_KHZ(end_freq);
480 reg_rule->freq_range.max_bandwidth_khz = MHZ_TO_KHZ(bw);
481 reg_rule->power_rule.max_antenna_gain = DBI_TO_MBI(ant_gain);
482 reg_rule->power_rule.max_eirp = DBM_TO_MBM(reg_pwr);
483 reg_rule->flags = reg_flags;
484 }
485
486 static void
ath12k_reg_update_weather_radar_band(struct ath12k_base * ab,struct ieee80211_regdomain * regd,struct ath12k_reg_rule * reg_rule,u8 * rule_idx,u32 flags,u16 max_bw)487 ath12k_reg_update_weather_radar_band(struct ath12k_base *ab,
488 struct ieee80211_regdomain *regd,
489 struct ath12k_reg_rule *reg_rule,
490 u8 *rule_idx, u32 flags, u16 max_bw)
491 {
492 u32 end_freq;
493 u16 bw;
494 u8 i;
495
496 i = *rule_idx;
497
498 bw = ath12k_reg_adjust_bw(reg_rule->start_freq,
499 ETSI_WEATHER_RADAR_BAND_LOW, max_bw);
500
501 ath12k_reg_update_rule(regd->reg_rules + i, reg_rule->start_freq,
502 ETSI_WEATHER_RADAR_BAND_LOW, bw,
503 reg_rule->ant_gain, reg_rule->reg_power,
504 flags);
505
506 ath12k_dbg(ab, ATH12K_DBG_REG,
507 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n",
508 i + 1, reg_rule->start_freq, ETSI_WEATHER_RADAR_BAND_LOW,
509 bw, reg_rule->ant_gain, reg_rule->reg_power,
510 regd->reg_rules[i].dfs_cac_ms,
511 flags);
512
513 if (reg_rule->end_freq > ETSI_WEATHER_RADAR_BAND_HIGH)
514 end_freq = ETSI_WEATHER_RADAR_BAND_HIGH;
515 else
516 end_freq = reg_rule->end_freq;
517
518 bw = ath12k_reg_adjust_bw(ETSI_WEATHER_RADAR_BAND_LOW, end_freq,
519 max_bw);
520
521 i++;
522
523 ath12k_reg_update_rule(regd->reg_rules + i,
524 ETSI_WEATHER_RADAR_BAND_LOW, end_freq, bw,
525 reg_rule->ant_gain, reg_rule->reg_power,
526 flags);
527
528 regd->reg_rules[i].dfs_cac_ms = ETSI_WEATHER_RADAR_BAND_CAC_TIMEOUT;
529
530 ath12k_dbg(ab, ATH12K_DBG_REG,
531 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n",
532 i + 1, ETSI_WEATHER_RADAR_BAND_LOW, end_freq,
533 bw, reg_rule->ant_gain, reg_rule->reg_power,
534 regd->reg_rules[i].dfs_cac_ms,
535 flags);
536
537 if (end_freq == reg_rule->end_freq) {
538 regd->n_reg_rules--;
539 *rule_idx = i;
540 return;
541 }
542
543 bw = ath12k_reg_adjust_bw(ETSI_WEATHER_RADAR_BAND_HIGH,
544 reg_rule->end_freq, max_bw);
545
546 i++;
547
548 ath12k_reg_update_rule(regd->reg_rules + i, ETSI_WEATHER_RADAR_BAND_HIGH,
549 reg_rule->end_freq, bw,
550 reg_rule->ant_gain, reg_rule->reg_power,
551 flags);
552
553 ath12k_dbg(ab, ATH12K_DBG_REG,
554 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n",
555 i + 1, ETSI_WEATHER_RADAR_BAND_HIGH, reg_rule->end_freq,
556 bw, reg_rule->ant_gain, reg_rule->reg_power,
557 regd->reg_rules[i].dfs_cac_ms,
558 flags);
559
560 *rule_idx = i;
561 }
562
563 struct ieee80211_regdomain *
ath12k_reg_build_regd(struct ath12k_base * ab,struct ath12k_reg_info * reg_info,bool intersect)564 ath12k_reg_build_regd(struct ath12k_base *ab,
565 struct ath12k_reg_info *reg_info, bool intersect)
566 {
567 struct ieee80211_regdomain *tmp_regd, *default_regd, *new_regd = NULL;
568 struct ath12k_reg_rule *reg_rule;
569 u8 i = 0, j = 0, k = 0;
570 u8 num_rules;
571 u16 max_bw;
572 u32 flags;
573 char alpha2[3];
574
575 num_rules = reg_info->num_5g_reg_rules + reg_info->num_2g_reg_rules;
576
577 /* FIXME: Currently taking reg rules for 6G only from Indoor AP mode list.
578 * This can be updated to choose the combination dynamically based on AP
579 * type and client type, after complete 6G regulatory support is added.
580 */
581 if (reg_info->is_ext_reg_event)
582 num_rules += reg_info->num_6g_reg_rules_ap[WMI_REG_INDOOR_AP];
583
584 if (!num_rules)
585 goto ret;
586
587 /* Add max additional rules to accommodate weather radar band */
588 if (reg_info->dfs_region == ATH12K_DFS_REG_ETSI)
589 num_rules += 2;
590
591 tmp_regd = kzalloc(sizeof(*tmp_regd) +
592 (num_rules * sizeof(struct ieee80211_reg_rule)),
593 GFP_ATOMIC);
594 if (!tmp_regd)
595 goto ret;
596
597 memcpy(tmp_regd->alpha2, reg_info->alpha2, REG_ALPHA2_LEN + 1);
598 memcpy(alpha2, reg_info->alpha2, REG_ALPHA2_LEN + 1);
599 alpha2[2] = '\0';
600 tmp_regd->dfs_region = ath12k_map_fw_dfs_region(reg_info->dfs_region);
601
602 ath12k_dbg(ab, ATH12K_DBG_REG,
603 "\r\nCountry %s, CFG Regdomain %s FW Regdomain %d, num_reg_rules %d\n",
604 alpha2, ath12k_reg_get_regdom_str(tmp_regd->dfs_region),
605 reg_info->dfs_region, num_rules);
606 /* Update reg_rules[] below. Firmware is expected to
607 * send these rules in order(2G rules first and then 5G)
608 */
609 for (; i < num_rules; i++) {
610 if (reg_info->num_2g_reg_rules &&
611 (i < reg_info->num_2g_reg_rules)) {
612 reg_rule = reg_info->reg_rules_2g_ptr + i;
613 max_bw = min_t(u16, reg_rule->max_bw,
614 reg_info->max_bw_2g);
615 flags = 0;
616 } else if (reg_info->num_5g_reg_rules &&
617 (j < reg_info->num_5g_reg_rules)) {
618 reg_rule = reg_info->reg_rules_5g_ptr + j++;
619 max_bw = min_t(u16, reg_rule->max_bw,
620 reg_info->max_bw_5g);
621
622 /* FW doesn't pass NL80211_RRF_AUTO_BW flag for
623 * BW Auto correction, we can enable this by default
624 * for all 5G rules here. The regulatory core performs
625 * BW correction if required and applies flags as
626 * per other BW rule flags we pass from here
627 */
628 flags = NL80211_RRF_AUTO_BW;
629 } else if (reg_info->is_ext_reg_event &&
630 reg_info->num_6g_reg_rules_ap[WMI_REG_INDOOR_AP] &&
631 (k < reg_info->num_6g_reg_rules_ap[WMI_REG_INDOOR_AP])) {
632 reg_rule = reg_info->reg_rules_6g_ap_ptr[WMI_REG_INDOOR_AP] + k++;
633 max_bw = min_t(u16, reg_rule->max_bw,
634 reg_info->max_bw_6g_ap[WMI_REG_INDOOR_AP]);
635 flags = NL80211_RRF_AUTO_BW;
636 } else {
637 break;
638 }
639
640 flags |= ath12k_map_fw_reg_flags(reg_rule->flags);
641
642 ath12k_reg_update_rule(tmp_regd->reg_rules + i,
643 reg_rule->start_freq,
644 reg_rule->end_freq, max_bw,
645 reg_rule->ant_gain, reg_rule->reg_power,
646 flags);
647
648 /* Update dfs cac timeout if the dfs domain is ETSI and the
649 * new rule covers weather radar band.
650 * Default value of '0' corresponds to 60s timeout, so no
651 * need to update that for other rules.
652 */
653 if (flags & NL80211_RRF_DFS &&
654 reg_info->dfs_region == ATH12K_DFS_REG_ETSI &&
655 (reg_rule->end_freq > ETSI_WEATHER_RADAR_BAND_LOW &&
656 reg_rule->start_freq < ETSI_WEATHER_RADAR_BAND_HIGH)){
657 ath12k_reg_update_weather_radar_band(ab, tmp_regd,
658 reg_rule, &i,
659 flags, max_bw);
660 continue;
661 }
662
663 if (reg_info->is_ext_reg_event) {
664 ath12k_dbg(ab, ATH12K_DBG_REG, "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d) (%d, %d)\n",
665 i + 1, reg_rule->start_freq, reg_rule->end_freq,
666 max_bw, reg_rule->ant_gain, reg_rule->reg_power,
667 tmp_regd->reg_rules[i].dfs_cac_ms,
668 flags, reg_rule->psd_flag, reg_rule->psd_eirp);
669 } else {
670 ath12k_dbg(ab, ATH12K_DBG_REG,
671 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n",
672 i + 1, reg_rule->start_freq, reg_rule->end_freq,
673 max_bw, reg_rule->ant_gain, reg_rule->reg_power,
674 tmp_regd->reg_rules[i].dfs_cac_ms,
675 flags);
676 }
677 }
678
679 tmp_regd->n_reg_rules = i;
680
681 if (intersect) {
682 default_regd = ab->default_regd[reg_info->phy_id];
683
684 /* Get a new regd by intersecting the received regd with
685 * our default regd.
686 */
687 new_regd = ath12k_regd_intersect(default_regd, tmp_regd);
688 kfree(tmp_regd);
689 if (!new_regd) {
690 ath12k_warn(ab, "Unable to create intersected regdomain\n");
691 goto ret;
692 }
693 } else {
694 new_regd = tmp_regd;
695 }
696
697 ret:
698 return new_regd;
699 }
700
ath12k_regd_update_work(struct work_struct * work)701 void ath12k_regd_update_work(struct work_struct *work)
702 {
703 struct ath12k *ar = container_of(work, struct ath12k,
704 regd_update_work);
705 int ret;
706
707 ret = ath12k_regd_update(ar, false);
708 if (ret) {
709 /* Firmware has already moved to the new regd. We need
710 * to maintain channel consistency across FW, Host driver
711 * and userspace. Hence as a fallback mechanism we can set
712 * the prev or default country code to the firmware.
713 */
714 /* TODO: Implement Fallback Mechanism */
715 }
716 }
717
ath12k_reg_init(struct ath12k * ar)718 void ath12k_reg_init(struct ath12k *ar)
719 {
720 ar->hw->wiphy->regulatory_flags = REGULATORY_WIPHY_SELF_MANAGED;
721 ar->hw->wiphy->reg_notifier = ath12k_reg_notifier;
722 }
723
ath12k_reg_free(struct ath12k_base * ab)724 void ath12k_reg_free(struct ath12k_base *ab)
725 {
726 int i;
727
728 for (i = 0; i < ab->hw_params->max_radios; i++) {
729 kfree(ab->default_regd[i]);
730 kfree(ab->new_regd[i]);
731 }
732 }
733