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1// SPDX-License-Identifier: BSD-3-Clause-Clear2/*3 * Copyright (c) 2018-2019 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 8#include "core.h"9#include "debug.h"10 11/* World regdom to be used in case default regd from fw is unavailable */12#define ATH11K_2GHZ_CH01_11 REG_RULE(2412 - 10, 2462 + 10, 40, 0, 20, 0)13#define ATH11K_5GHZ_5150_5350 REG_RULE(5150 - 10, 5350 + 10, 80, 0, 30,\14 NL80211_RRF_NO_IR)15#define ATH11K_5GHZ_5725_5850 REG_RULE(5725 - 10, 5850 + 10, 80, 0, 30,\16 NL80211_RRF_NO_IR)17 18#define ETSI_WEATHER_RADAR_BAND_LOW 559019#define ETSI_WEATHER_RADAR_BAND_HIGH 565020#define ETSI_WEATHER_RADAR_BAND_CAC_TIMEOUT 60000021 22static const struct ieee80211_regdomain ath11k_world_regd = {23 .n_reg_rules = 3,24 .alpha2 = "00",25 .reg_rules = {26 ATH11K_2GHZ_CH01_11,27 ATH11K_5GHZ_5150_5350,28 ATH11K_5GHZ_5725_5850,29 }30};31 32static bool ath11k_regdom_changes(struct ath11k *ar, char *alpha2)33{34 const struct ieee80211_regdomain *regd;35 36 regd = rcu_dereference_rtnl(ar->hw->wiphy->regd);37 /* This can happen during wiphy registration where the previous38 * user request is received before we update the regd received39 * from firmware.40 */41 if (!regd)42 return true;43 44 return memcmp(regd->alpha2, alpha2, 2) != 0;45}46 47static void48ath11k_reg_notifier(struct wiphy *wiphy, struct regulatory_request *request)49{50 struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);51 struct wmi_init_country_params init_country_param;52 struct ath11k *ar = hw->priv;53 int ret;54 55 ath11k_dbg(ar->ab, ATH11K_DBG_REG,56 "Regulatory Notification received for %s\n", wiphy_name(wiphy));57 58 /* Currently supporting only General User Hints. Cell base user59 * hints to be handled later.60 * Hints from other sources like Core, Beacons are not expected for61 * self managed wiphy's62 */63 if (!(request->initiator == NL80211_REGDOM_SET_BY_USER &&64 request->user_reg_hint_type == NL80211_USER_REG_HINT_USER)) {65 ath11k_warn(ar->ab, "Unexpected Regulatory event for this wiphy\n");66 return;67 }68 69 if (!IS_ENABLED(CONFIG_ATH_REG_DYNAMIC_USER_REG_HINTS)) {70 ath11k_dbg(ar->ab, ATH11K_DBG_REG,71 "Country Setting is not allowed\n");72 return;73 }74 75 if (!ath11k_regdom_changes(ar, request->alpha2)) {76 ath11k_dbg(ar->ab, ATH11K_DBG_REG, "Country is already set\n");77 return;78 }79 80 /* Set the country code to the firmware and will receive81 * the WMI_REG_CHAN_LIST_CC EVENT for updating the82 * reg info83 */84 if (ar->ab->hw_params.current_cc_support) {85 memcpy(&ar->alpha2, request->alpha2, 2);86 ret = ath11k_reg_set_cc(ar);87 if (ret)88 ath11k_warn(ar->ab,89 "failed set current country code: %d\n", ret);90 } else {91 init_country_param.flags = ALPHA_IS_SET;92 memcpy(&init_country_param.cc_info.alpha2, request->alpha2, 2);93 init_country_param.cc_info.alpha2[2] = 0;94 95 ret = ath11k_wmi_send_init_country_cmd(ar, init_country_param);96 if (ret)97 ath11k_warn(ar->ab,98 "INIT Country code set to fw failed : %d\n", ret);99 }100 101 ath11k_mac_11d_scan_stop(ar);102 ar->regdom_set_by_user = true;103}104 105int ath11k_reg_update_chan_list(struct ath11k *ar, bool wait)106{107 struct ieee80211_supported_band **bands;108 struct scan_chan_list_params *params;109 struct ieee80211_channel *channel;110 struct ieee80211_hw *hw = ar->hw;111 struct channel_param *ch;112 enum nl80211_band band;113 int num_channels = 0;114 int i, ret, left;115 116 if (wait && ar->state_11d != ATH11K_11D_IDLE) {117 left = wait_for_completion_timeout(&ar->completed_11d_scan,118 ATH11K_SCAN_TIMEOUT_HZ);119 if (!left) {120 ath11k_dbg(ar->ab, ATH11K_DBG_REG,121 "failed to receive 11d scan complete: timed out\n");122 ar->state_11d = ATH11K_11D_IDLE;123 }124 ath11k_dbg(ar->ab, ATH11K_DBG_REG,125 "11d scan wait left time %d\n", left);126 }127 128 if (wait &&129 (ar->scan.state == ATH11K_SCAN_STARTING ||130 ar->scan.state == ATH11K_SCAN_RUNNING)) {131 left = wait_for_completion_timeout(&ar->scan.completed,132 ATH11K_SCAN_TIMEOUT_HZ);133 if (!left)134 ath11k_dbg(ar->ab, ATH11K_DBG_REG,135 "failed to receive hw scan complete: timed out\n");136 137 ath11k_dbg(ar->ab, ATH11K_DBG_REG,138 "hw scan wait left time %d\n", left);139 }140 141 if (ar->state == ATH11K_STATE_RESTARTING)142 return 0;143 144 bands = hw->wiphy->bands;145 for (band = 0; band < NUM_NL80211_BANDS; band++) {146 if (!bands[band])147 continue;148 149 for (i = 0; i < bands[band]->n_channels; i++) {150 if (bands[band]->channels[i].flags &151 IEEE80211_CHAN_DISABLED)152 continue;153 154 num_channels++;155 }156 }157 158 if (WARN_ON(!num_channels))159 return -EINVAL;160 161 params = kzalloc(struct_size(params, ch_param, num_channels),162 GFP_KERNEL);163 if (!params)164 return -ENOMEM;165 166 params->pdev_id = ar->pdev->pdev_id;167 params->nallchans = num_channels;168 169 ch = params->ch_param;170 171 for (band = 0; band < NUM_NL80211_BANDS; band++) {172 if (!bands[band])173 continue;174 175 for (i = 0; i < bands[band]->n_channels; i++) {176 channel = &bands[band]->channels[i];177 178 if (channel->flags & IEEE80211_CHAN_DISABLED)179 continue;180 181 /* TODO: Set to true/false based on some condition? */182 ch->allow_ht = true;183 ch->allow_vht = true;184 ch->allow_he = true;185 186 ch->dfs_set =187 !!(channel->flags & IEEE80211_CHAN_RADAR);188 ch->is_chan_passive = !!(channel->flags &189 IEEE80211_CHAN_NO_IR);190 ch->is_chan_passive |= ch->dfs_set;191 ch->mhz = channel->center_freq;192 ch->cfreq1 = channel->center_freq;193 ch->minpower = 0;194 ch->maxpower = channel->max_power * 2;195 ch->maxregpower = channel->max_reg_power * 2;196 ch->antennamax = channel->max_antenna_gain * 2;197 198 /* TODO: Use appropriate phymodes */199 if (channel->band == NL80211_BAND_2GHZ)200 ch->phy_mode = MODE_11G;201 else202 ch->phy_mode = MODE_11A;203 204 if (channel->band == NL80211_BAND_6GHZ &&205 cfg80211_channel_is_psc(channel))206 ch->psc_channel = true;207 208 ath11k_dbg(ar->ab, ATH11K_DBG_WMI,209 "mac channel [%d/%d] freq %d maxpower %d regpower %d antenna %d mode %d\n",210 i, params->nallchans,211 ch->mhz, ch->maxpower, ch->maxregpower,212 ch->antennamax, ch->phy_mode);213 214 ch++;215 /* TODO: use quarrter/half rate, cfreq12, dfs_cfreq2216 * set_agile, reg_class_idx217 */218 }219 }220 221 ret = ath11k_wmi_send_scan_chan_list_cmd(ar, params);222 kfree(params);223 224 return ret;225}226 227static void ath11k_copy_regd(struct ieee80211_regdomain *regd_orig,228 struct ieee80211_regdomain *regd_copy)229{230 u8 i;231 232 /* The caller should have checked error conditions */233 memcpy(regd_copy, regd_orig, sizeof(*regd_orig));234 235 for (i = 0; i < regd_orig->n_reg_rules; i++)236 memcpy(®d_copy->reg_rules[i], ®d_orig->reg_rules[i],237 sizeof(struct ieee80211_reg_rule));238}239 240int ath11k_regd_update(struct ath11k *ar)241{242 struct ieee80211_regdomain *regd, *regd_copy = NULL;243 int ret, regd_len, pdev_id;244 struct ath11k_base *ab;245 246 ab = ar->ab;247 pdev_id = ar->pdev_idx;248 249 spin_lock_bh(&ab->base_lock);250 251 /* Prefer the latest regd update over default if it's available */252 if (ab->new_regd[pdev_id]) {253 regd = ab->new_regd[pdev_id];254 } else {255 /* Apply the regd received during init through256 * WMI_REG_CHAN_LIST_CC event. In case of failure to257 * receive the regd, initialize with a default world258 * regulatory.259 */260 if (ab->default_regd[pdev_id]) {261 regd = ab->default_regd[pdev_id];262 } else {263 ath11k_warn(ab,264 "failed to receive default regd during init\n");265 regd = (struct ieee80211_regdomain *)&ath11k_world_regd;266 }267 }268 269 if (!regd) {270 ret = -EINVAL;271 spin_unlock_bh(&ab->base_lock);272 goto err;273 }274 275 regd_len = sizeof(*regd) + (regd->n_reg_rules *276 sizeof(struct ieee80211_reg_rule));277 278 regd_copy = kzalloc(regd_len, GFP_ATOMIC);279 if (regd_copy)280 ath11k_copy_regd(regd, regd_copy);281 282 spin_unlock_bh(&ab->base_lock);283 284 if (!regd_copy) {285 ret = -ENOMEM;286 goto err;287 }288 289 ret = regulatory_set_wiphy_regd(ar->hw->wiphy, regd_copy);290 291 kfree(regd_copy);292 293 if (ret)294 goto err;295 296 if (ar->state == ATH11K_STATE_ON) {297 ret = ath11k_reg_update_chan_list(ar, true);298 if (ret)299 goto err;300 }301 302 return 0;303err:304 ath11k_warn(ab, "failed to perform regd update : %d\n", ret);305 return ret;306}307 308static enum nl80211_dfs_regions309ath11k_map_fw_dfs_region(enum ath11k_dfs_region dfs_region)310{311 switch (dfs_region) {312 case ATH11K_DFS_REG_FCC:313 case ATH11K_DFS_REG_CN:314 return NL80211_DFS_FCC;315 case ATH11K_DFS_REG_ETSI:316 case ATH11K_DFS_REG_KR:317 return NL80211_DFS_ETSI;318 case ATH11K_DFS_REG_MKK:319 case ATH11K_DFS_REG_MKK_N:320 return NL80211_DFS_JP;321 default:322 return NL80211_DFS_UNSET;323 }324}325 326static u32 ath11k_map_fw_reg_flags(u16 reg_flags)327{328 u32 flags = 0;329 330 if (reg_flags & REGULATORY_CHAN_NO_IR)331 flags = NL80211_RRF_NO_IR;332 333 if (reg_flags & REGULATORY_CHAN_RADAR)334 flags |= NL80211_RRF_DFS;335 336 if (reg_flags & REGULATORY_CHAN_NO_OFDM)337 flags |= NL80211_RRF_NO_OFDM;338 339 if (reg_flags & REGULATORY_CHAN_INDOOR_ONLY)340 flags |= NL80211_RRF_NO_OUTDOOR;341 342 if (reg_flags & REGULATORY_CHAN_NO_HT40)343 flags |= NL80211_RRF_NO_HT40;344 345 if (reg_flags & REGULATORY_CHAN_NO_80MHZ)346 flags |= NL80211_RRF_NO_80MHZ;347 348 if (reg_flags & REGULATORY_CHAN_NO_160MHZ)349 flags |= NL80211_RRF_NO_160MHZ;350 351 return flags;352}353 354static u32 ath11k_map_fw_phy_flags(u32 phy_flags)355{356 u32 flags = 0;357 358 if (phy_flags & ATH11K_REG_PHY_BITMAP_NO11AX)359 flags |= NL80211_RRF_NO_HE;360 361 return flags;362}363 364static bool365ath11k_reg_can_intersect(struct ieee80211_reg_rule *rule1,366 struct ieee80211_reg_rule *rule2)367{368 u32 start_freq1, end_freq1;369 u32 start_freq2, end_freq2;370 371 start_freq1 = rule1->freq_range.start_freq_khz;372 start_freq2 = rule2->freq_range.start_freq_khz;373 374 end_freq1 = rule1->freq_range.end_freq_khz;375 end_freq2 = rule2->freq_range.end_freq_khz;376 377 if ((start_freq1 >= start_freq2 &&378 start_freq1 < end_freq2) ||379 (start_freq2 > start_freq1 &&380 start_freq2 < end_freq1))381 return true;382 383 /* TODO: Should we restrict intersection feasibility384 * based on min bandwidth of the intersected region also,385 * say the intersected rule should have a min bandwidth386 * of 20MHz?387 */388 389 return false;390}391 392static void ath11k_reg_intersect_rules(struct ieee80211_reg_rule *rule1,393 struct ieee80211_reg_rule *rule2,394 struct ieee80211_reg_rule *new_rule)395{396 u32 start_freq1, end_freq1;397 u32 start_freq2, end_freq2;398 u32 freq_diff, max_bw;399 400 start_freq1 = rule1->freq_range.start_freq_khz;401 start_freq2 = rule2->freq_range.start_freq_khz;402 403 end_freq1 = rule1->freq_range.end_freq_khz;404 end_freq2 = rule2->freq_range.end_freq_khz;405 406 new_rule->freq_range.start_freq_khz = max_t(u32, start_freq1,407 start_freq2);408 new_rule->freq_range.end_freq_khz = min_t(u32, end_freq1, end_freq2);409 410 freq_diff = new_rule->freq_range.end_freq_khz -411 new_rule->freq_range.start_freq_khz;412 max_bw = min_t(u32, rule1->freq_range.max_bandwidth_khz,413 rule2->freq_range.max_bandwidth_khz);414 new_rule->freq_range.max_bandwidth_khz = min_t(u32, max_bw, freq_diff);415 416 new_rule->power_rule.max_antenna_gain =417 min_t(u32, rule1->power_rule.max_antenna_gain,418 rule2->power_rule.max_antenna_gain);419 420 new_rule->power_rule.max_eirp = min_t(u32, rule1->power_rule.max_eirp,421 rule2->power_rule.max_eirp);422 423 /* Use the flags of both the rules */424 new_rule->flags = rule1->flags | rule2->flags;425 426 if ((rule1->flags & NL80211_RRF_PSD) && (rule2->flags & NL80211_RRF_PSD))427 new_rule->psd = min_t(s8, rule1->psd, rule2->psd);428 else429 new_rule->flags &= ~NL80211_RRF_PSD;430 431 /* To be safe, lts use the max cac timeout of both rules */432 new_rule->dfs_cac_ms = max_t(u32, rule1->dfs_cac_ms,433 rule2->dfs_cac_ms);434}435 436static struct ieee80211_regdomain *437ath11k_regd_intersect(struct ieee80211_regdomain *default_regd,438 struct ieee80211_regdomain *curr_regd)439{440 u8 num_old_regd_rules, num_curr_regd_rules, num_new_regd_rules;441 struct ieee80211_reg_rule *old_rule, *curr_rule, *new_rule;442 struct ieee80211_regdomain *new_regd = NULL;443 u8 i, j, k;444 445 num_old_regd_rules = default_regd->n_reg_rules;446 num_curr_regd_rules = curr_regd->n_reg_rules;447 num_new_regd_rules = 0;448 449 /* Find the number of intersecting rules to allocate new regd memory */450 for (i = 0; i < num_old_regd_rules; i++) {451 old_rule = default_regd->reg_rules + i;452 for (j = 0; j < num_curr_regd_rules; j++) {453 curr_rule = curr_regd->reg_rules + j;454 455 if (ath11k_reg_can_intersect(old_rule, curr_rule))456 num_new_regd_rules++;457 }458 }459 460 if (!num_new_regd_rules)461 return NULL;462 463 new_regd = kzalloc(sizeof(*new_regd) + (num_new_regd_rules *464 sizeof(struct ieee80211_reg_rule)),465 GFP_ATOMIC);466 467 if (!new_regd)468 return NULL;469 470 /* We set the new country and dfs region directly and only trim471 * the freq, power, antenna gain by intersecting with the472 * default regdomain. Also MAX of the dfs cac timeout is selected.473 */474 new_regd->n_reg_rules = num_new_regd_rules;475 memcpy(new_regd->alpha2, curr_regd->alpha2, sizeof(new_regd->alpha2));476 new_regd->dfs_region = curr_regd->dfs_region;477 new_rule = new_regd->reg_rules;478 479 for (i = 0, k = 0; i < num_old_regd_rules; i++) {480 old_rule = default_regd->reg_rules + i;481 for (j = 0; j < num_curr_regd_rules; j++) {482 curr_rule = curr_regd->reg_rules + j;483 484 if (ath11k_reg_can_intersect(old_rule, curr_rule))485 ath11k_reg_intersect_rules(old_rule, curr_rule,486 (new_rule + k++));487 }488 }489 return new_regd;490}491 492static const char *493ath11k_reg_get_regdom_str(enum nl80211_dfs_regions dfs_region)494{495 switch (dfs_region) {496 case NL80211_DFS_FCC:497 return "FCC";498 case NL80211_DFS_ETSI:499 return "ETSI";500 case NL80211_DFS_JP:501 return "JP";502 default:503 return "UNSET";504 }505}506 507static u16508ath11k_reg_adjust_bw(u16 start_freq, u16 end_freq, u16 max_bw)509{510 u16 bw;511 512 if (end_freq <= start_freq)513 return 0;514 515 bw = end_freq - start_freq;516 bw = min_t(u16, bw, max_bw);517 518 if (bw >= 80 && bw < 160)519 bw = 80;520 else if (bw >= 40 && bw < 80)521 bw = 40;522 else if (bw >= 20 && bw < 40)523 bw = 20;524 else525 bw = 0;526 527 return bw;528}529 530static void531ath11k_reg_update_rule(struct ieee80211_reg_rule *reg_rule, u32 start_freq,532 u32 end_freq, u32 bw, u32 ant_gain, u32 reg_pwr,533 s8 psd, u32 reg_flags)534{535 reg_rule->freq_range.start_freq_khz = MHZ_TO_KHZ(start_freq);536 reg_rule->freq_range.end_freq_khz = MHZ_TO_KHZ(end_freq);537 reg_rule->freq_range.max_bandwidth_khz = MHZ_TO_KHZ(bw);538 reg_rule->power_rule.max_antenna_gain = DBI_TO_MBI(ant_gain);539 reg_rule->power_rule.max_eirp = DBM_TO_MBM(reg_pwr);540 reg_rule->psd = psd;541 reg_rule->flags = reg_flags;542}543 544static void545ath11k_reg_update_weather_radar_band(struct ath11k_base *ab,546 struct ieee80211_regdomain *regd,547 struct cur_reg_rule *reg_rule,548 u8 *rule_idx, u32 flags, u16 max_bw)549{550 u32 start_freq;551 u32 end_freq;552 u16 bw;553 u8 i;554 555 i = *rule_idx;556 557 /* there might be situations when even the input rule must be dropped */558 i--;559 560 /* frequencies below weather radar */561 bw = ath11k_reg_adjust_bw(reg_rule->start_freq,562 ETSI_WEATHER_RADAR_BAND_LOW, max_bw);563 if (bw > 0) {564 i++;565 566 ath11k_reg_update_rule(regd->reg_rules + i,567 reg_rule->start_freq,568 ETSI_WEATHER_RADAR_BAND_LOW, bw,569 reg_rule->ant_gain, reg_rule->reg_power,570 reg_rule->psd_eirp, flags);571 572 ath11k_dbg(ab, ATH11K_DBG_REG,573 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n",574 i + 1, reg_rule->start_freq,575 ETSI_WEATHER_RADAR_BAND_LOW, bw, reg_rule->ant_gain,576 reg_rule->reg_power, regd->reg_rules[i].dfs_cac_ms,577 flags);578 }579 580 /* weather radar frequencies */581 start_freq = max_t(u32, reg_rule->start_freq,582 ETSI_WEATHER_RADAR_BAND_LOW);583 end_freq = min_t(u32, reg_rule->end_freq, ETSI_WEATHER_RADAR_BAND_HIGH);584 585 bw = ath11k_reg_adjust_bw(start_freq, end_freq, max_bw);586 if (bw > 0) {587 i++;588 589 ath11k_reg_update_rule(regd->reg_rules + i, start_freq,590 end_freq, bw, reg_rule->ant_gain,591 reg_rule->reg_power, reg_rule->psd_eirp, flags);592 593 regd->reg_rules[i].dfs_cac_ms = ETSI_WEATHER_RADAR_BAND_CAC_TIMEOUT;594 595 ath11k_dbg(ab, ATH11K_DBG_REG,596 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n",597 i + 1, start_freq, end_freq, bw,598 reg_rule->ant_gain, reg_rule->reg_power,599 regd->reg_rules[i].dfs_cac_ms, flags);600 }601 602 /* frequencies above weather radar */603 bw = ath11k_reg_adjust_bw(ETSI_WEATHER_RADAR_BAND_HIGH,604 reg_rule->end_freq, max_bw);605 if (bw > 0) {606 i++;607 608 ath11k_reg_update_rule(regd->reg_rules + i,609 ETSI_WEATHER_RADAR_BAND_HIGH,610 reg_rule->end_freq, bw,611 reg_rule->ant_gain, reg_rule->reg_power,612 reg_rule->psd_eirp, flags);613 614 ath11k_dbg(ab, ATH11K_DBG_REG,615 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n",616 i + 1, ETSI_WEATHER_RADAR_BAND_HIGH,617 reg_rule->end_freq, bw, reg_rule->ant_gain,618 reg_rule->reg_power, regd->reg_rules[i].dfs_cac_ms,619 flags);620 }621 622 *rule_idx = i;623}624 625enum wmi_reg_6ghz_ap_type626ath11k_reg_ap_pwr_convert(enum ieee80211_ap_reg_power power_type)627{628 switch (power_type) {629 case IEEE80211_REG_LPI_AP:630 return WMI_REG_INDOOR_AP;631 case IEEE80211_REG_SP_AP:632 return WMI_REG_STANDARD_POWER_AP;633 case IEEE80211_REG_VLP_AP:634 return WMI_REG_VERY_LOW_POWER_AP;635 default:636 return WMI_REG_MAX_AP_TYPE;637 }638}639 640struct ieee80211_regdomain *641ath11k_reg_build_regd(struct ath11k_base *ab,642 struct cur_regulatory_info *reg_info, bool intersect,643 enum wmi_vdev_type vdev_type,644 enum ieee80211_ap_reg_power power_type)645{646 struct ieee80211_regdomain *tmp_regd, *default_regd, *new_regd = NULL;647 struct cur_reg_rule *reg_rule, *reg_rule_6ghz;648 u8 i = 0, j = 0, k = 0;649 u8 num_rules;650 u16 max_bw;651 u32 flags, reg_6ghz_number, max_bw_6ghz;652 char alpha2[3];653 654 num_rules = reg_info->num_5ghz_reg_rules + reg_info->num_2ghz_reg_rules;655 656 if (reg_info->is_ext_reg_event) {657 if (vdev_type == WMI_VDEV_TYPE_STA) {658 enum wmi_reg_6ghz_ap_type ap_type;659 660 ap_type = ath11k_reg_ap_pwr_convert(power_type);661 662 if (ap_type == WMI_REG_MAX_AP_TYPE)663 ap_type = WMI_REG_INDOOR_AP;664 665 reg_6ghz_number = reg_info->num_6ghz_rules_client666 [ap_type][WMI_REG_DEFAULT_CLIENT];667 668 if (reg_6ghz_number == 0) {669 ap_type = WMI_REG_INDOOR_AP;670 reg_6ghz_number = reg_info->num_6ghz_rules_client671 [ap_type][WMI_REG_DEFAULT_CLIENT];672 }673 674 reg_rule_6ghz = reg_info->reg_rules_6ghz_client_ptr675 [ap_type][WMI_REG_DEFAULT_CLIENT];676 max_bw_6ghz = reg_info->max_bw_6ghz_client677 [ap_type][WMI_REG_DEFAULT_CLIENT];678 } else {679 reg_6ghz_number = reg_info->num_6ghz_rules_ap[WMI_REG_INDOOR_AP];680 reg_rule_6ghz =681 reg_info->reg_rules_6ghz_ap_ptr[WMI_REG_INDOOR_AP];682 max_bw_6ghz = reg_info->max_bw_6ghz_ap[WMI_REG_INDOOR_AP];683 }684 685 num_rules += reg_6ghz_number;686 }687 688 if (!num_rules)689 goto ret;690 691 /* Add max additional rules to accommodate weather radar band */692 if (reg_info->dfs_region == ATH11K_DFS_REG_ETSI)693 num_rules += 2;694 695 tmp_regd = kzalloc(sizeof(*tmp_regd) +696 (num_rules * sizeof(struct ieee80211_reg_rule)),697 GFP_ATOMIC);698 if (!tmp_regd)699 goto ret;700 701 memcpy(tmp_regd->alpha2, reg_info->alpha2, REG_ALPHA2_LEN + 1);702 memcpy(alpha2, reg_info->alpha2, REG_ALPHA2_LEN + 1);703 alpha2[2] = '\0';704 tmp_regd->dfs_region = ath11k_map_fw_dfs_region(reg_info->dfs_region);705 706 ath11k_dbg(ab, ATH11K_DBG_REG,707 "Country %s, CFG Regdomain %s FW Regdomain %d, num_reg_rules %d\n",708 alpha2, ath11k_reg_get_regdom_str(tmp_regd->dfs_region),709 reg_info->dfs_region, num_rules);710 /* Update reg_rules[] below. Firmware is expected to711 * send these rules in order(2 GHz rules first and then 5 GHz)712 */713 for (; i < num_rules; i++) {714 if (reg_info->num_2ghz_reg_rules &&715 (i < reg_info->num_2ghz_reg_rules)) {716 reg_rule = reg_info->reg_rules_2ghz_ptr + i;717 max_bw = min_t(u16, reg_rule->max_bw,718 reg_info->max_bw_2ghz);719 flags = 0;720 } else if (reg_info->num_5ghz_reg_rules &&721 (j < reg_info->num_5ghz_reg_rules)) {722 reg_rule = reg_info->reg_rules_5ghz_ptr + j++;723 max_bw = min_t(u16, reg_rule->max_bw,724 reg_info->max_bw_5ghz);725 726 /* FW doesn't pass NL80211_RRF_AUTO_BW flag for727 * BW Auto correction, we can enable this by default728 * for all 5G rules here. The regulatory core performs729 * BW correction if required and applies flags as730 * per other BW rule flags we pass from here731 */732 flags = NL80211_RRF_AUTO_BW;733 } else if (reg_info->is_ext_reg_event && reg_6ghz_number &&734 k < reg_6ghz_number) {735 reg_rule = reg_rule_6ghz + k++;736 max_bw = min_t(u16, reg_rule->max_bw, max_bw_6ghz);737 flags = NL80211_RRF_AUTO_BW;738 if (reg_rule->psd_flag)739 flags |= NL80211_RRF_PSD;740 } else {741 break;742 }743 744 flags |= ath11k_map_fw_reg_flags(reg_rule->flags);745 flags |= ath11k_map_fw_phy_flags(reg_info->phybitmap);746 747 ath11k_reg_update_rule(tmp_regd->reg_rules + i,748 reg_rule->start_freq,749 reg_rule->end_freq, max_bw,750 reg_rule->ant_gain, reg_rule->reg_power,751 reg_rule->psd_eirp, flags);752 753 /* Update dfs cac timeout if the dfs domain is ETSI and the754 * new rule covers weather radar band.755 * Default value of '0' corresponds to 60s timeout, so no756 * need to update that for other rules.757 */758 if (flags & NL80211_RRF_DFS &&759 reg_info->dfs_region == ATH11K_DFS_REG_ETSI &&760 (reg_rule->end_freq > ETSI_WEATHER_RADAR_BAND_LOW &&761 reg_rule->start_freq < ETSI_WEATHER_RADAR_BAND_HIGH)){762 ath11k_reg_update_weather_radar_band(ab, tmp_regd,763 reg_rule, &i,764 flags, max_bw);765 continue;766 }767 768 if (reg_info->is_ext_reg_event) {769 ath11k_dbg(ab, ATH11K_DBG_REG,770 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d) (%d, %d)\n",771 i + 1, reg_rule->start_freq, reg_rule->end_freq,772 max_bw, reg_rule->ant_gain, reg_rule->reg_power,773 tmp_regd->reg_rules[i].dfs_cac_ms, flags,774 reg_rule->psd_flag, reg_rule->psd_eirp);775 } else {776 ath11k_dbg(ab, ATH11K_DBG_REG,777 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n",778 i + 1, reg_rule->start_freq, reg_rule->end_freq,779 max_bw, reg_rule->ant_gain, reg_rule->reg_power,780 tmp_regd->reg_rules[i].dfs_cac_ms,781 flags);782 }783 }784 785 tmp_regd->n_reg_rules = i;786 787 if (intersect) {788 default_regd = ab->default_regd[reg_info->phy_id];789 790 /* Get a new regd by intersecting the received regd with791 * our default regd.792 */793 new_regd = ath11k_regd_intersect(default_regd, tmp_regd);794 kfree(tmp_regd);795 if (!new_regd) {796 ath11k_warn(ab, "Unable to create intersected regdomain\n");797 goto ret;798 }799 } else {800 new_regd = tmp_regd;801 }802 803ret:804 return new_regd;805}806 807static bool ath11k_reg_is_world_alpha(char *alpha)808{809 if (alpha[0] == '0' && alpha[1] == '0')810 return true;811 812 if (alpha[0] == 'n' && alpha[1] == 'a')813 return true;814 815 return false;816}817 818static enum wmi_vdev_type ath11k_reg_get_ar_vdev_type(struct ath11k *ar)819{820 struct ath11k_vif *arvif;821 822 /* Currently each struct ath11k maps to one struct ieee80211_hw/wiphy823 * and one struct ieee80211_regdomain, so it could only store one group824 * reg rules. It means multi-interface concurrency in the same ath11k is825 * not support for the regdomain. So get the vdev type of the first entry826 * now. After concurrency support for the regdomain, this should change.827 */828 arvif = list_first_entry_or_null(&ar->arvifs, struct ath11k_vif, list);829 if (arvif)830 return arvif->vdev_type;831 832 return WMI_VDEV_TYPE_UNSPEC;833}834 835int ath11k_reg_handle_chan_list(struct ath11k_base *ab,836 struct cur_regulatory_info *reg_info,837 enum ieee80211_ap_reg_power power_type)838{839 struct ieee80211_regdomain *regd;840 bool intersect = false;841 int pdev_idx;842 struct ath11k *ar;843 enum wmi_vdev_type vdev_type;844 845 ath11k_dbg(ab, ATH11K_DBG_WMI, "event reg handle chan list");846 847 if (reg_info->status_code != REG_SET_CC_STATUS_PASS) {848 /* In case of failure to set the requested ctry,849 * fw retains the current regd. We print a failure info850 * and return from here.851 */852 ath11k_warn(ab, "Failed to set the requested Country regulatory setting\n");853 return -EINVAL;854 }855 856 pdev_idx = reg_info->phy_id;857 858 /* Avoid default reg rule updates sent during FW recovery if859 * it is already available860 */861 spin_lock_bh(&ab->base_lock);862 if (test_bit(ATH11K_FLAG_RECOVERY, &ab->dev_flags) &&863 ab->default_regd[pdev_idx]) {864 spin_unlock_bh(&ab->base_lock);865 goto retfail;866 }867 spin_unlock_bh(&ab->base_lock);868 869 if (pdev_idx >= ab->num_radios) {870 /* Process the event for phy0 only if single_pdev_only871 * is true. If pdev_idx is valid but not 0, discard the872 * event. Otherwise, it goes to fallback. In either case873 * ath11k_reg_reset_info() needs to be called to avoid874 * memory leak issue.875 */876 ath11k_reg_reset_info(reg_info);877 878 if (ab->hw_params.single_pdev_only &&879 pdev_idx < ab->hw_params.num_rxdma_per_pdev)880 return 0;881 goto fallback;882 }883 884 /* Avoid multiple overwrites to default regd, during core885 * stop-start after mac registration.886 */887 if (ab->default_regd[pdev_idx] && !ab->new_regd[pdev_idx] &&888 !memcmp((char *)ab->default_regd[pdev_idx]->alpha2,889 (char *)reg_info->alpha2, 2))890 goto retfail;891 892 /* Intersect new rules with default regd if a new country setting was893 * requested, i.e a default regd was already set during initialization894 * and the regd coming from this event has a valid country info.895 */896 if (ab->default_regd[pdev_idx] &&897 !ath11k_reg_is_world_alpha((char *)898 ab->default_regd[pdev_idx]->alpha2) &&899 !ath11k_reg_is_world_alpha((char *)reg_info->alpha2))900 intersect = true;901 902 ar = ab->pdevs[pdev_idx].ar;903 vdev_type = ath11k_reg_get_ar_vdev_type(ar);904 905 ath11k_dbg(ab, ATH11K_DBG_WMI,906 "wmi handle chan list power type %d vdev type %d intersect %d\n",907 power_type, vdev_type, intersect);908 909 regd = ath11k_reg_build_regd(ab, reg_info, intersect, vdev_type, power_type);910 if (!regd) {911 ath11k_warn(ab, "failed to build regd from reg_info\n");912 goto fallback;913 }914 915 if (power_type == IEEE80211_REG_UNSET_AP) {916 ath11k_reg_reset_info(&ab->reg_info_store[pdev_idx]);917 ab->reg_info_store[pdev_idx] = *reg_info;918 }919 920 spin_lock_bh(&ab->base_lock);921 if (ab->default_regd[pdev_idx]) {922 /* The initial rules from FW after WMI Init is to build923 * the default regd. From then on, any rules updated for924 * the pdev could be due to user reg changes.925 * Free previously built regd before assigning the newly926 * generated regd to ar. NULL pointer handling will be927 * taken care by kfree itself.928 */929 ar = ab->pdevs[pdev_idx].ar;930 kfree(ab->new_regd[pdev_idx]);931 ab->new_regd[pdev_idx] = regd;932 queue_work(ab->workqueue, &ar->regd_update_work);933 } else {934 /* This regd would be applied during mac registration and is935 * held constant throughout for regd intersection purpose936 */937 ab->default_regd[pdev_idx] = regd;938 }939 ab->dfs_region = reg_info->dfs_region;940 spin_unlock_bh(&ab->base_lock);941 942 return 0;943 944fallback:945 /* Fallback to older reg (by sending previous country setting946 * again if fw has succeeded and we failed to process here.947 * The Regdomain should be uniform across driver and fw. Since the948 * FW has processed the command and sent a success status, we expect949 * this function to succeed as well. If it doesn't, CTRY needs to be950 * reverted at the fw and the old SCAN_CHAN_LIST cmd needs to be sent.951 */952 /* TODO: This is rare, but still should also be handled */953 WARN_ON(1);954 955retfail:956 957 return -EINVAL;958}959 960void ath11k_regd_update_work(struct work_struct *work)961{962 struct ath11k *ar = container_of(work, struct ath11k,963 regd_update_work);964 int ret;965 966 ret = ath11k_regd_update(ar);967 if (ret) {968 /* Firmware has already moved to the new regd. We need969 * to maintain channel consistency across FW, Host driver970 * and userspace. Hence as a fallback mechanism we can set971 * the prev or default country code to the firmware.972 */973 /* TODO: Implement Fallback Mechanism */974 }975}976 977void ath11k_reg_init(struct ath11k *ar)978{979 ar->hw->wiphy->regulatory_flags = REGULATORY_WIPHY_SELF_MANAGED;980 ar->hw->wiphy->reg_notifier = ath11k_reg_notifier;981}982 983void ath11k_reg_reset_info(struct cur_regulatory_info *reg_info)984{985 int i, j;986 987 if (!reg_info)988 return;989 990 kfree(reg_info->reg_rules_2ghz_ptr);991 kfree(reg_info->reg_rules_5ghz_ptr);992 993 for (i = 0; i < WMI_REG_CURRENT_MAX_AP_TYPE; i++) {994 kfree(reg_info->reg_rules_6ghz_ap_ptr[i]);995 996 for (j = 0; j < WMI_REG_MAX_CLIENT_TYPE; j++)997 kfree(reg_info->reg_rules_6ghz_client_ptr[i][j]);998 }999 1000 memset(reg_info, 0, sizeof(*reg_info));1001}1002 1003void ath11k_reg_free(struct ath11k_base *ab)1004{1005 int i;1006 1007 for (i = 0; i < ab->num_radios; i++)1008 ath11k_reg_reset_info(&ab->reg_info_store[i]);1009 1010 kfree(ab->reg_info_store);1011 ab->reg_info_store = NULL;1012 1013 for (i = 0; i < ab->hw_params.max_radios; i++) {1014 kfree(ab->default_regd[i]);1015 kfree(ab->new_regd[i]);1016 }1017}1018 1019int ath11k_reg_set_cc(struct ath11k *ar)1020{1021 struct wmi_set_current_country_params set_current_param = {};1022 1023 memcpy(&set_current_param.alpha2, ar->alpha2, 2);1024 return ath11k_wmi_send_set_current_country_cmd(ar, &set_current_param);1025}1026