1 | // SPDX-License-Identifier: BSD-3-Clause-Clear |
2 | /* |
3 | * Copyright (c) 2018-2021 The Linux Foundation. All rights reserved. |
4 | * Copyright (c) 2021-2024 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 | |
31 | static bool ath12k_regdom_changes(struct ieee80211_hw *hw, char *alpha2) |
32 | { |
33 | const struct ieee80211_regdomain *regd; |
34 | |
35 | regd = rcu_dereference_rtnl(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(p: regd->alpha2, q: alpha2, size: 2) != 0; |
44 | } |
45 | |
46 | static void |
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_hw *ah = ath12k_hw_to_ah(hw); |
52 | struct ath12k *ar = ath12k_ah_to_ar(ah); |
53 | int ret; |
54 | |
55 | ath12k_dbg(ar->ab, ATH12K_DBG_REG, |
56 | "Regulatory Notification received for %s\n" , wiphy_name(wiphy)); |
57 | |
58 | /* Currently supporting only General User Hints. Cell base user |
59 | * hints to be handled later. |
60 | * Hints from other sources like Core, Beacons are not expected for |
61 | * self managed wiphy's |
62 | */ |
63 | if (!(request->initiator == NL80211_REGDOM_SET_BY_USER && |
64 | request->user_reg_hint_type == NL80211_USER_REG_HINT_USER)) { |
65 | ath12k_warn(ab: ar->ab, fmt: "Unexpected Regulatory event for this wiphy\n" ); |
66 | return; |
67 | } |
68 | |
69 | if (!IS_ENABLED(CONFIG_ATH_REG_DYNAMIC_USER_REG_HINTS)) { |
70 | ath12k_dbg(ar->ab, ATH12K_DBG_REG, |
71 | "Country Setting is not allowed\n" ); |
72 | return; |
73 | } |
74 | |
75 | if (!ath12k_regdom_changes(hw, alpha2: request->alpha2)) { |
76 | ath12k_dbg(ar->ab, ATH12K_DBG_REG, "Country is already set\n" ); |
77 | return; |
78 | } |
79 | |
80 | /* Set the country code to the firmware and wait for |
81 | * the WMI_REG_CHAN_LIST_CC EVENT for updating the |
82 | * reg info |
83 | */ |
84 | arg.flags = ALPHA_IS_SET; |
85 | memcpy(&arg.cc_info.alpha2, request->alpha2, 2); |
86 | arg.cc_info.alpha2[2] = 0; |
87 | |
88 | ret = ath12k_wmi_send_init_country_cmd(ar, arg: &arg); |
89 | if (ret) |
90 | ath12k_warn(ab: ar->ab, |
91 | fmt: "INIT Country code set to fw failed : %d\n" , ret); |
92 | } |
93 | |
94 | int ath12k_reg_update_chan_list(struct ath12k *ar) |
95 | { |
96 | struct ieee80211_supported_band **bands; |
97 | struct ath12k_wmi_scan_chan_list_arg *arg; |
98 | struct ieee80211_channel *channel; |
99 | struct ieee80211_hw *hw = ath12k_ar_to_hw(ar); |
100 | struct ath12k_wmi_channel_arg *ch; |
101 | enum nl80211_band band; |
102 | int num_channels = 0; |
103 | int i, ret; |
104 | |
105 | bands = hw->wiphy->bands; |
106 | for (band = 0; band < NUM_NL80211_BANDS; band++) { |
107 | if (!(ar->mac.sbands[band].channels && bands[band])) |
108 | continue; |
109 | |
110 | for (i = 0; i < bands[band]->n_channels; i++) { |
111 | if (bands[band]->channels[i].flags & |
112 | IEEE80211_CHAN_DISABLED) |
113 | continue; |
114 | |
115 | num_channels++; |
116 | } |
117 | } |
118 | |
119 | if (WARN_ON(!num_channels)) |
120 | return -EINVAL; |
121 | |
122 | arg = kzalloc(struct_size(arg, channel, num_channels), GFP_KERNEL); |
123 | |
124 | if (!arg) |
125 | return -ENOMEM; |
126 | |
127 | arg->pdev_id = ar->pdev->pdev_id; |
128 | arg->nallchans = num_channels; |
129 | |
130 | ch = arg->channel; |
131 | |
132 | for (band = 0; band < NUM_NL80211_BANDS; band++) { |
133 | if (!(ar->mac.sbands[band].channels && bands[band])) |
134 | continue; |
135 | |
136 | for (i = 0; i < bands[band]->n_channels; i++) { |
137 | channel = &bands[band]->channels[i]; |
138 | |
139 | if (channel->flags & IEEE80211_CHAN_DISABLED) |
140 | continue; |
141 | |
142 | /* TODO: Set to true/false based on some condition? */ |
143 | ch->allow_ht = true; |
144 | ch->allow_vht = true; |
145 | ch->allow_he = true; |
146 | |
147 | ch->dfs_set = |
148 | !!(channel->flags & IEEE80211_CHAN_RADAR); |
149 | ch->is_chan_passive = !!(channel->flags & |
150 | IEEE80211_CHAN_NO_IR); |
151 | ch->is_chan_passive |= ch->dfs_set; |
152 | ch->mhz = channel->center_freq; |
153 | ch->cfreq1 = channel->center_freq; |
154 | ch->minpower = 0; |
155 | ch->maxpower = channel->max_power * 2; |
156 | ch->maxregpower = channel->max_reg_power * 2; |
157 | ch->antennamax = channel->max_antenna_gain * 2; |
158 | |
159 | /* TODO: Use appropriate phymodes */ |
160 | if (channel->band == NL80211_BAND_2GHZ) |
161 | ch->phy_mode = MODE_11G; |
162 | else |
163 | ch->phy_mode = MODE_11A; |
164 | |
165 | if (channel->band == NL80211_BAND_6GHZ && |
166 | cfg80211_channel_is_psc(chan: channel)) |
167 | ch->psc_channel = true; |
168 | |
169 | ath12k_dbg(ar->ab, ATH12K_DBG_WMI, |
170 | "mac channel [%d/%d] freq %d maxpower %d regpower %d antenna %d mode %d\n" , |
171 | i, arg->nallchans, |
172 | ch->mhz, ch->maxpower, ch->maxregpower, |
173 | ch->antennamax, ch->phy_mode); |
174 | |
175 | ch++; |
176 | /* TODO: use quarrter/half rate, cfreq12, dfs_cfreq2 |
177 | * set_agile, reg_class_idx |
178 | */ |
179 | } |
180 | } |
181 | |
182 | ret = ath12k_wmi_send_scan_chan_list_cmd(ar, arg); |
183 | kfree(objp: arg); |
184 | |
185 | return ret; |
186 | } |
187 | |
188 | static void ath12k_copy_regd(struct ieee80211_regdomain *regd_orig, |
189 | struct ieee80211_regdomain *regd_copy) |
190 | { |
191 | u8 i; |
192 | |
193 | /* The caller should have checked error conditions */ |
194 | memcpy(regd_copy, regd_orig, sizeof(*regd_orig)); |
195 | |
196 | for (i = 0; i < regd_orig->n_reg_rules; i++) |
197 | memcpy(®d_copy->reg_rules[i], ®d_orig->reg_rules[i], |
198 | sizeof(struct ieee80211_reg_rule)); |
199 | } |
200 | |
201 | int ath12k_regd_update(struct ath12k *ar, bool init) |
202 | { |
203 | struct ieee80211_hw *hw = ath12k_ar_to_hw(ar); |
204 | struct ieee80211_regdomain *regd, *regd_copy = NULL; |
205 | int ret, regd_len, pdev_id; |
206 | struct ath12k_base *ab; |
207 | |
208 | ab = ar->ab; |
209 | pdev_id = ar->pdev_idx; |
210 | |
211 | spin_lock_bh(lock: &ab->base_lock); |
212 | |
213 | if (init) { |
214 | /* Apply the regd received during init through |
215 | * WMI_REG_CHAN_LIST_CC event. In case of failure to |
216 | * receive the regd, initialize with a default world |
217 | * regulatory. |
218 | */ |
219 | if (ab->default_regd[pdev_id]) { |
220 | regd = ab->default_regd[pdev_id]; |
221 | } else { |
222 | ath12k_warn(ab, |
223 | fmt: "failed to receive default regd during init\n" ); |
224 | regd = (struct ieee80211_regdomain *)&ath12k_world_regd; |
225 | } |
226 | } else { |
227 | regd = ab->new_regd[pdev_id]; |
228 | } |
229 | |
230 | if (!regd) { |
231 | ret = -EINVAL; |
232 | spin_unlock_bh(lock: &ab->base_lock); |
233 | goto err; |
234 | } |
235 | |
236 | regd_len = sizeof(*regd) + (regd->n_reg_rules * |
237 | sizeof(struct ieee80211_reg_rule)); |
238 | |
239 | regd_copy = kzalloc(size: regd_len, GFP_ATOMIC); |
240 | if (regd_copy) |
241 | ath12k_copy_regd(regd_orig: regd, regd_copy); |
242 | |
243 | spin_unlock_bh(lock: &ab->base_lock); |
244 | |
245 | if (!regd_copy) { |
246 | ret = -ENOMEM; |
247 | goto err; |
248 | } |
249 | |
250 | rtnl_lock(); |
251 | wiphy_lock(wiphy: hw->wiphy); |
252 | ret = regulatory_set_wiphy_regd_sync(wiphy: hw->wiphy, rd: regd_copy); |
253 | wiphy_unlock(wiphy: hw->wiphy); |
254 | rtnl_unlock(); |
255 | |
256 | kfree(objp: regd_copy); |
257 | |
258 | if (ret) |
259 | goto err; |
260 | |
261 | if (ar->state == ATH12K_STATE_ON) { |
262 | ret = ath12k_reg_update_chan_list(ar); |
263 | if (ret) |
264 | goto err; |
265 | } |
266 | |
267 | return 0; |
268 | err: |
269 | ath12k_warn(ab, fmt: "failed to perform regd update : %d\n" , ret); |
270 | return ret; |
271 | } |
272 | |
273 | static enum nl80211_dfs_regions |
274 | ath12k_map_fw_dfs_region(enum ath12k_dfs_region dfs_region) |
275 | { |
276 | switch (dfs_region) { |
277 | case ATH12K_DFS_REG_FCC: |
278 | case ATH12K_DFS_REG_CN: |
279 | return NL80211_DFS_FCC; |
280 | case ATH12K_DFS_REG_ETSI: |
281 | case ATH12K_DFS_REG_KR: |
282 | return NL80211_DFS_ETSI; |
283 | case ATH12K_DFS_REG_MKK: |
284 | case ATH12K_DFS_REG_MKK_N: |
285 | return NL80211_DFS_JP; |
286 | default: |
287 | return NL80211_DFS_UNSET; |
288 | } |
289 | } |
290 | |
291 | static u32 ath12k_map_fw_reg_flags(u16 reg_flags) |
292 | { |
293 | u32 flags = 0; |
294 | |
295 | if (reg_flags & REGULATORY_CHAN_NO_IR) |
296 | flags = NL80211_RRF_NO_IR; |
297 | |
298 | if (reg_flags & REGULATORY_CHAN_RADAR) |
299 | flags |= NL80211_RRF_DFS; |
300 | |
301 | if (reg_flags & REGULATORY_CHAN_NO_OFDM) |
302 | flags |= NL80211_RRF_NO_OFDM; |
303 | |
304 | if (reg_flags & REGULATORY_CHAN_INDOOR_ONLY) |
305 | flags |= NL80211_RRF_NO_OUTDOOR; |
306 | |
307 | if (reg_flags & REGULATORY_CHAN_NO_HT40) |
308 | flags |= NL80211_RRF_NO_HT40; |
309 | |
310 | if (reg_flags & REGULATORY_CHAN_NO_80MHZ) |
311 | flags |= NL80211_RRF_NO_80MHZ; |
312 | |
313 | if (reg_flags & REGULATORY_CHAN_NO_160MHZ) |
314 | flags |= NL80211_RRF_NO_160MHZ; |
315 | |
316 | return flags; |
317 | } |
318 | |
319 | static u32 ath12k_map_fw_phy_flags(u32 phy_flags) |
320 | { |
321 | u32 flags = 0; |
322 | |
323 | if (phy_flags & ATH12K_REG_PHY_BITMAP_NO11AX) |
324 | flags |= NL80211_RRF_NO_HE; |
325 | |
326 | if (phy_flags & ATH12K_REG_PHY_BITMAP_NO11BE) |
327 | flags |= NL80211_RRF_NO_EHT; |
328 | |
329 | return flags; |
330 | } |
331 | |
332 | static bool |
333 | ath12k_reg_can_intersect(struct ieee80211_reg_rule *rule1, |
334 | struct ieee80211_reg_rule *rule2) |
335 | { |
336 | u32 start_freq1, end_freq1; |
337 | u32 start_freq2, end_freq2; |
338 | |
339 | start_freq1 = rule1->freq_range.start_freq_khz; |
340 | start_freq2 = rule2->freq_range.start_freq_khz; |
341 | |
342 | end_freq1 = rule1->freq_range.end_freq_khz; |
343 | end_freq2 = rule2->freq_range.end_freq_khz; |
344 | |
345 | if ((start_freq1 >= start_freq2 && |
346 | start_freq1 < end_freq2) || |
347 | (start_freq2 > start_freq1 && |
348 | start_freq2 < end_freq1)) |
349 | return true; |
350 | |
351 | /* TODO: Should we restrict intersection feasibility |
352 | * based on min bandwidth of the intersected region also, |
353 | * say the intersected rule should have a min bandwidth |
354 | * of 20MHz? |
355 | */ |
356 | |
357 | return false; |
358 | } |
359 | |
360 | static void ath12k_reg_intersect_rules(struct ieee80211_reg_rule *rule1, |
361 | struct ieee80211_reg_rule *rule2, |
362 | struct ieee80211_reg_rule *new_rule) |
363 | { |
364 | u32 start_freq1, end_freq1; |
365 | u32 start_freq2, end_freq2; |
366 | u32 freq_diff, max_bw; |
367 | |
368 | start_freq1 = rule1->freq_range.start_freq_khz; |
369 | start_freq2 = rule2->freq_range.start_freq_khz; |
370 | |
371 | end_freq1 = rule1->freq_range.end_freq_khz; |
372 | end_freq2 = rule2->freq_range.end_freq_khz; |
373 | |
374 | new_rule->freq_range.start_freq_khz = max_t(u32, start_freq1, |
375 | start_freq2); |
376 | new_rule->freq_range.end_freq_khz = min_t(u32, end_freq1, end_freq2); |
377 | |
378 | freq_diff = new_rule->freq_range.end_freq_khz - |
379 | new_rule->freq_range.start_freq_khz; |
380 | max_bw = min_t(u32, rule1->freq_range.max_bandwidth_khz, |
381 | rule2->freq_range.max_bandwidth_khz); |
382 | new_rule->freq_range.max_bandwidth_khz = min_t(u32, max_bw, freq_diff); |
383 | |
384 | new_rule->power_rule.max_antenna_gain = |
385 | min_t(u32, rule1->power_rule.max_antenna_gain, |
386 | rule2->power_rule.max_antenna_gain); |
387 | |
388 | new_rule->power_rule.max_eirp = min_t(u32, rule1->power_rule.max_eirp, |
389 | rule2->power_rule.max_eirp); |
390 | |
391 | /* Use the flags of both the rules */ |
392 | new_rule->flags = rule1->flags | rule2->flags; |
393 | |
394 | /* To be safe, lts use the max cac timeout of both rules */ |
395 | new_rule->dfs_cac_ms = max_t(u32, rule1->dfs_cac_ms, |
396 | rule2->dfs_cac_ms); |
397 | } |
398 | |
399 | static struct ieee80211_regdomain * |
400 | ath12k_regd_intersect(struct ieee80211_regdomain *default_regd, |
401 | struct ieee80211_regdomain *curr_regd) |
402 | { |
403 | u8 num_old_regd_rules, num_curr_regd_rules, num_new_regd_rules; |
404 | struct ieee80211_reg_rule *old_rule, *curr_rule, *new_rule; |
405 | struct ieee80211_regdomain *new_regd = NULL; |
406 | u8 i, j, k; |
407 | |
408 | num_old_regd_rules = default_regd->n_reg_rules; |
409 | num_curr_regd_rules = curr_regd->n_reg_rules; |
410 | num_new_regd_rules = 0; |
411 | |
412 | /* Find the number of intersecting rules to allocate new regd memory */ |
413 | for (i = 0; i < num_old_regd_rules; i++) { |
414 | old_rule = default_regd->reg_rules + i; |
415 | for (j = 0; j < num_curr_regd_rules; j++) { |
416 | curr_rule = curr_regd->reg_rules + j; |
417 | |
418 | if (ath12k_reg_can_intersect(rule1: old_rule, rule2: curr_rule)) |
419 | num_new_regd_rules++; |
420 | } |
421 | } |
422 | |
423 | if (!num_new_regd_rules) |
424 | return NULL; |
425 | |
426 | new_regd = kzalloc(size: sizeof(*new_regd) + (num_new_regd_rules * |
427 | sizeof(struct ieee80211_reg_rule)), |
428 | GFP_ATOMIC); |
429 | |
430 | if (!new_regd) |
431 | return NULL; |
432 | |
433 | /* We set the new country and dfs region directly and only trim |
434 | * the freq, power, antenna gain by intersecting with the |
435 | * default regdomain. Also MAX of the dfs cac timeout is selected. |
436 | */ |
437 | new_regd->n_reg_rules = num_new_regd_rules; |
438 | memcpy(new_regd->alpha2, curr_regd->alpha2, sizeof(new_regd->alpha2)); |
439 | new_regd->dfs_region = curr_regd->dfs_region; |
440 | new_rule = new_regd->reg_rules; |
441 | |
442 | for (i = 0, k = 0; i < num_old_regd_rules; i++) { |
443 | old_rule = default_regd->reg_rules + i; |
444 | for (j = 0; j < num_curr_regd_rules; j++) { |
445 | curr_rule = curr_regd->reg_rules + j; |
446 | |
447 | if (ath12k_reg_can_intersect(rule1: old_rule, rule2: curr_rule)) |
448 | ath12k_reg_intersect_rules(rule1: old_rule, rule2: curr_rule, |
449 | new_rule: (new_rule + k++)); |
450 | } |
451 | } |
452 | return new_regd; |
453 | } |
454 | |
455 | static const char * |
456 | ath12k_reg_get_regdom_str(enum nl80211_dfs_regions dfs_region) |
457 | { |
458 | switch (dfs_region) { |
459 | case NL80211_DFS_FCC: |
460 | return "FCC" ; |
461 | case NL80211_DFS_ETSI: |
462 | return "ETSI" ; |
463 | case NL80211_DFS_JP: |
464 | return "JP" ; |
465 | default: |
466 | return "UNSET" ; |
467 | } |
468 | } |
469 | |
470 | static u16 |
471 | ath12k_reg_adjust_bw(u16 start_freq, u16 end_freq, u16 max_bw) |
472 | { |
473 | u16 bw; |
474 | |
475 | bw = end_freq - start_freq; |
476 | bw = min_t(u16, bw, max_bw); |
477 | |
478 | if (bw >= 80 && bw < 160) |
479 | bw = 80; |
480 | else if (bw >= 40 && bw < 80) |
481 | bw = 40; |
482 | else if (bw < 40) |
483 | bw = 20; |
484 | |
485 | return bw; |
486 | } |
487 | |
488 | static void |
489 | ath12k_reg_update_rule(struct ieee80211_reg_rule *reg_rule, u32 start_freq, |
490 | u32 end_freq, u32 bw, u32 ant_gain, u32 reg_pwr, |
491 | u32 reg_flags) |
492 | { |
493 | reg_rule->freq_range.start_freq_khz = MHZ_TO_KHZ(start_freq); |
494 | reg_rule->freq_range.end_freq_khz = MHZ_TO_KHZ(end_freq); |
495 | reg_rule->freq_range.max_bandwidth_khz = MHZ_TO_KHZ(bw); |
496 | reg_rule->power_rule.max_antenna_gain = DBI_TO_MBI(ant_gain); |
497 | reg_rule->power_rule.max_eirp = DBM_TO_MBM(reg_pwr); |
498 | reg_rule->flags = reg_flags; |
499 | } |
500 | |
501 | static void |
502 | ath12k_reg_update_weather_radar_band(struct ath12k_base *ab, |
503 | struct ieee80211_regdomain *regd, |
504 | struct ath12k_reg_rule *reg_rule, |
505 | u8 *rule_idx, u32 flags, u16 max_bw) |
506 | { |
507 | u32 end_freq; |
508 | u16 bw; |
509 | u8 i; |
510 | |
511 | i = *rule_idx; |
512 | |
513 | bw = ath12k_reg_adjust_bw(start_freq: reg_rule->start_freq, |
514 | ETSI_WEATHER_RADAR_BAND_LOW, max_bw); |
515 | |
516 | ath12k_reg_update_rule(reg_rule: regd->reg_rules + i, start_freq: reg_rule->start_freq, |
517 | ETSI_WEATHER_RADAR_BAND_LOW, bw, |
518 | ant_gain: reg_rule->ant_gain, reg_pwr: reg_rule->reg_power, |
519 | reg_flags: flags); |
520 | |
521 | ath12k_dbg(ab, ATH12K_DBG_REG, |
522 | "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n" , |
523 | i + 1, reg_rule->start_freq, ETSI_WEATHER_RADAR_BAND_LOW, |
524 | bw, reg_rule->ant_gain, reg_rule->reg_power, |
525 | regd->reg_rules[i].dfs_cac_ms, |
526 | flags); |
527 | |
528 | if (reg_rule->end_freq > ETSI_WEATHER_RADAR_BAND_HIGH) |
529 | end_freq = ETSI_WEATHER_RADAR_BAND_HIGH; |
530 | else |
531 | end_freq = reg_rule->end_freq; |
532 | |
533 | bw = ath12k_reg_adjust_bw(ETSI_WEATHER_RADAR_BAND_LOW, end_freq, |
534 | max_bw); |
535 | |
536 | i++; |
537 | |
538 | ath12k_reg_update_rule(reg_rule: regd->reg_rules + i, |
539 | ETSI_WEATHER_RADAR_BAND_LOW, end_freq, bw, |
540 | ant_gain: reg_rule->ant_gain, reg_pwr: reg_rule->reg_power, |
541 | reg_flags: flags); |
542 | |
543 | regd->reg_rules[i].dfs_cac_ms = ETSI_WEATHER_RADAR_BAND_CAC_TIMEOUT; |
544 | |
545 | ath12k_dbg(ab, ATH12K_DBG_REG, |
546 | "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n" , |
547 | i + 1, ETSI_WEATHER_RADAR_BAND_LOW, end_freq, |
548 | bw, reg_rule->ant_gain, reg_rule->reg_power, |
549 | regd->reg_rules[i].dfs_cac_ms, |
550 | flags); |
551 | |
552 | if (end_freq == reg_rule->end_freq) { |
553 | regd->n_reg_rules--; |
554 | *rule_idx = i; |
555 | return; |
556 | } |
557 | |
558 | bw = ath12k_reg_adjust_bw(ETSI_WEATHER_RADAR_BAND_HIGH, |
559 | end_freq: reg_rule->end_freq, max_bw); |
560 | |
561 | i++; |
562 | |
563 | ath12k_reg_update_rule(reg_rule: regd->reg_rules + i, ETSI_WEATHER_RADAR_BAND_HIGH, |
564 | end_freq: reg_rule->end_freq, bw, |
565 | ant_gain: reg_rule->ant_gain, reg_pwr: reg_rule->reg_power, |
566 | reg_flags: flags); |
567 | |
568 | ath12k_dbg(ab, ATH12K_DBG_REG, |
569 | "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n" , |
570 | i + 1, ETSI_WEATHER_RADAR_BAND_HIGH, reg_rule->end_freq, |
571 | bw, reg_rule->ant_gain, reg_rule->reg_power, |
572 | regd->reg_rules[i].dfs_cac_ms, |
573 | flags); |
574 | |
575 | *rule_idx = i; |
576 | } |
577 | |
578 | struct ieee80211_regdomain * |
579 | ath12k_reg_build_regd(struct ath12k_base *ab, |
580 | struct ath12k_reg_info *reg_info, bool intersect) |
581 | { |
582 | struct ieee80211_regdomain *tmp_regd, *default_regd, *new_regd = NULL; |
583 | struct ath12k_reg_rule *reg_rule; |
584 | u8 i = 0, j = 0, k = 0; |
585 | u8 num_rules; |
586 | u16 max_bw; |
587 | u32 flags; |
588 | char alpha2[3]; |
589 | |
590 | num_rules = reg_info->num_5g_reg_rules + reg_info->num_2g_reg_rules; |
591 | |
592 | /* FIXME: Currently taking reg rules for 6G only from Indoor AP mode list. |
593 | * This can be updated to choose the combination dynamically based on AP |
594 | * type and client type, after complete 6G regulatory support is added. |
595 | */ |
596 | if (reg_info->is_ext_reg_event) |
597 | num_rules += reg_info->num_6g_reg_rules_ap[WMI_REG_INDOOR_AP]; |
598 | |
599 | if (!num_rules) |
600 | goto ret; |
601 | |
602 | /* Add max additional rules to accommodate weather radar band */ |
603 | if (reg_info->dfs_region == ATH12K_DFS_REG_ETSI) |
604 | num_rules += 2; |
605 | |
606 | tmp_regd = kzalloc(size: sizeof(*tmp_regd) + |
607 | (num_rules * sizeof(struct ieee80211_reg_rule)), |
608 | GFP_ATOMIC); |
609 | if (!tmp_regd) |
610 | goto ret; |
611 | |
612 | memcpy(tmp_regd->alpha2, reg_info->alpha2, REG_ALPHA2_LEN + 1); |
613 | memcpy(alpha2, reg_info->alpha2, REG_ALPHA2_LEN + 1); |
614 | alpha2[2] = '\0'; |
615 | tmp_regd->dfs_region = ath12k_map_fw_dfs_region(dfs_region: reg_info->dfs_region); |
616 | |
617 | ath12k_dbg(ab, ATH12K_DBG_REG, |
618 | "\r\nCountry %s, CFG Regdomain %s FW Regdomain %d, num_reg_rules %d\n" , |
619 | alpha2, ath12k_reg_get_regdom_str(tmp_regd->dfs_region), |
620 | reg_info->dfs_region, num_rules); |
621 | /* Update reg_rules[] below. Firmware is expected to |
622 | * send these rules in order(2G rules first and then 5G) |
623 | */ |
624 | for (; i < num_rules; i++) { |
625 | if (reg_info->num_2g_reg_rules && |
626 | (i < reg_info->num_2g_reg_rules)) { |
627 | reg_rule = reg_info->reg_rules_2g_ptr + i; |
628 | max_bw = min_t(u16, reg_rule->max_bw, |
629 | reg_info->max_bw_2g); |
630 | flags = 0; |
631 | } else if (reg_info->num_5g_reg_rules && |
632 | (j < reg_info->num_5g_reg_rules)) { |
633 | reg_rule = reg_info->reg_rules_5g_ptr + j++; |
634 | max_bw = min_t(u16, reg_rule->max_bw, |
635 | reg_info->max_bw_5g); |
636 | |
637 | /* FW doesn't pass NL80211_RRF_AUTO_BW flag for |
638 | * BW Auto correction, we can enable this by default |
639 | * for all 5G rules here. The regulatory core performs |
640 | * BW correction if required and applies flags as |
641 | * per other BW rule flags we pass from here |
642 | */ |
643 | flags = NL80211_RRF_AUTO_BW; |
644 | } else if (reg_info->is_ext_reg_event && |
645 | reg_info->num_6g_reg_rules_ap[WMI_REG_INDOOR_AP] && |
646 | (k < reg_info->num_6g_reg_rules_ap[WMI_REG_INDOOR_AP])) { |
647 | reg_rule = reg_info->reg_rules_6g_ap_ptr[WMI_REG_INDOOR_AP] + k++; |
648 | max_bw = min_t(u16, reg_rule->max_bw, |
649 | reg_info->max_bw_6g_ap[WMI_REG_INDOOR_AP]); |
650 | flags = NL80211_RRF_AUTO_BW; |
651 | } else { |
652 | break; |
653 | } |
654 | |
655 | flags |= ath12k_map_fw_reg_flags(reg_flags: reg_rule->flags); |
656 | flags |= ath12k_map_fw_phy_flags(phy_flags: reg_info->phybitmap); |
657 | |
658 | ath12k_reg_update_rule(reg_rule: tmp_regd->reg_rules + i, |
659 | start_freq: reg_rule->start_freq, |
660 | end_freq: reg_rule->end_freq, bw: max_bw, |
661 | ant_gain: reg_rule->ant_gain, reg_pwr: reg_rule->reg_power, |
662 | reg_flags: flags); |
663 | |
664 | /* Update dfs cac timeout if the dfs domain is ETSI and the |
665 | * new rule covers weather radar band. |
666 | * Default value of '0' corresponds to 60s timeout, so no |
667 | * need to update that for other rules. |
668 | */ |
669 | if (flags & NL80211_RRF_DFS && |
670 | reg_info->dfs_region == ATH12K_DFS_REG_ETSI && |
671 | (reg_rule->end_freq > ETSI_WEATHER_RADAR_BAND_LOW && |
672 | reg_rule->start_freq < ETSI_WEATHER_RADAR_BAND_HIGH)){ |
673 | ath12k_reg_update_weather_radar_band(ab, regd: tmp_regd, |
674 | reg_rule, rule_idx: &i, |
675 | flags, max_bw); |
676 | continue; |
677 | } |
678 | |
679 | if (reg_info->is_ext_reg_event) { |
680 | ath12k_dbg(ab, ATH12K_DBG_REG, "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d) (%d, %d)\n" , |
681 | i + 1, reg_rule->start_freq, reg_rule->end_freq, |
682 | max_bw, reg_rule->ant_gain, reg_rule->reg_power, |
683 | tmp_regd->reg_rules[i].dfs_cac_ms, |
684 | flags, reg_rule->psd_flag, reg_rule->psd_eirp); |
685 | } else { |
686 | ath12k_dbg(ab, ATH12K_DBG_REG, |
687 | "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n" , |
688 | i + 1, reg_rule->start_freq, reg_rule->end_freq, |
689 | max_bw, reg_rule->ant_gain, reg_rule->reg_power, |
690 | tmp_regd->reg_rules[i].dfs_cac_ms, |
691 | flags); |
692 | } |
693 | } |
694 | |
695 | tmp_regd->n_reg_rules = i; |
696 | |
697 | if (intersect) { |
698 | default_regd = ab->default_regd[reg_info->phy_id]; |
699 | |
700 | /* Get a new regd by intersecting the received regd with |
701 | * our default regd. |
702 | */ |
703 | new_regd = ath12k_regd_intersect(default_regd, curr_regd: tmp_regd); |
704 | kfree(objp: tmp_regd); |
705 | if (!new_regd) { |
706 | ath12k_warn(ab, fmt: "Unable to create intersected regdomain\n" ); |
707 | goto ret; |
708 | } |
709 | } else { |
710 | new_regd = tmp_regd; |
711 | } |
712 | |
713 | ret: |
714 | return new_regd; |
715 | } |
716 | |
717 | void ath12k_regd_update_work(struct work_struct *work) |
718 | { |
719 | struct ath12k *ar = container_of(work, struct ath12k, |
720 | regd_update_work); |
721 | int ret; |
722 | |
723 | ret = ath12k_regd_update(ar, init: false); |
724 | if (ret) { |
725 | /* Firmware has already moved to the new regd. We need |
726 | * to maintain channel consistency across FW, Host driver |
727 | * and userspace. Hence as a fallback mechanism we can set |
728 | * the prev or default country code to the firmware. |
729 | */ |
730 | /* TODO: Implement Fallback Mechanism */ |
731 | } |
732 | } |
733 | |
734 | void ath12k_reg_init(struct ieee80211_hw *hw) |
735 | { |
736 | hw->wiphy->regulatory_flags = REGULATORY_WIPHY_SELF_MANAGED; |
737 | hw->wiphy->reg_notifier = ath12k_reg_notifier; |
738 | } |
739 | |
740 | void ath12k_reg_free(struct ath12k_base *ab) |
741 | { |
742 | int i; |
743 | |
744 | for (i = 0; i < ab->hw_params->max_radios; i++) { |
745 | kfree(objp: ab->default_regd[i]); |
746 | kfree(objp: ab->new_regd[i]); |
747 | } |
748 | } |
749 | |