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(regd->alpha2, alpha2, 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, 0); 53 int ret, i; 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(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 ath12k_dbg(ar->ab, ATH12K_DBG_REG, 71 "Country Setting is not allowed\n"); 72 return; 73 } 74 75 if (!ath12k_regdom_changes(hw, 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 /* Allow fresh updates to wiphy regd */ 89 ah->regd_updated = false; 90 91 /* Send the reg change request to all the radios */ 92 for_each_ar(ah, ar, i) { 93 ret = ath12k_wmi_send_init_country_cmd(ar, &arg); 94 if (ret) 95 ath12k_warn(ar->ab, 96 "INIT Country code set to fw failed : %d\n", ret); 97 } 98 } 99 100 int ath12k_reg_update_chan_list(struct ath12k *ar) 101 { 102 struct ieee80211_supported_band **bands; 103 struct ath12k_wmi_scan_chan_list_arg *arg; 104 struct ieee80211_channel *channel; 105 struct ieee80211_hw *hw = ath12k_ar_to_hw(ar); 106 struct ath12k_wmi_channel_arg *ch; 107 enum nl80211_band band; 108 int num_channels = 0; 109 int i, ret; 110 111 bands = hw->wiphy->bands; 112 for (band = 0; band < NUM_NL80211_BANDS; band++) { 113 if (!(ar->mac.sbands[band].channels && bands[band])) 114 continue; 115 116 for (i = 0; i < bands[band]->n_channels; i++) { 117 if (bands[band]->channels[i].flags & 118 IEEE80211_CHAN_DISABLED) 119 continue; 120 121 num_channels++; 122 } 123 } 124 125 if (WARN_ON(!num_channels)) 126 return -EINVAL; 127 128 arg = kzalloc(struct_size(arg, channel, num_channels), GFP_KERNEL); 129 130 if (!arg) 131 return -ENOMEM; 132 133 arg->pdev_id = ar->pdev->pdev_id; 134 arg->nallchans = num_channels; 135 136 ch = arg->channel; 137 138 for (band = 0; band < NUM_NL80211_BANDS; band++) { 139 if (!(ar->mac.sbands[band].channels && bands[band])) 140 continue; 141 142 for (i = 0; i < bands[band]->n_channels; i++) { 143 channel = &bands[band]->channels[i]; 144 145 if (channel->flags & IEEE80211_CHAN_DISABLED) 146 continue; 147 148 /* TODO: Set to true/false based on some condition? */ 149 ch->allow_ht = true; 150 ch->allow_vht = true; 151 ch->allow_he = true; 152 153 ch->dfs_set = 154 !!(channel->flags & IEEE80211_CHAN_RADAR); 155 ch->is_chan_passive = !!(channel->flags & 156 IEEE80211_CHAN_NO_IR); 157 ch->is_chan_passive |= ch->dfs_set; 158 ch->mhz = channel->center_freq; 159 ch->cfreq1 = channel->center_freq; 160 ch->minpower = 0; 161 ch->maxpower = channel->max_power * 2; 162 ch->maxregpower = channel->max_reg_power * 2; 163 ch->antennamax = channel->max_antenna_gain * 2; 164 165 /* TODO: Use appropriate phymodes */ 166 if (channel->band == NL80211_BAND_2GHZ) 167 ch->phy_mode = MODE_11G; 168 else 169 ch->phy_mode = MODE_11A; 170 171 if (channel->band == NL80211_BAND_6GHZ && 172 cfg80211_channel_is_psc(channel)) 173 ch->psc_channel = true; 174 175 ath12k_dbg(ar->ab, ATH12K_DBG_WMI, 176 "mac channel [%d/%d] freq %d maxpower %d regpower %d antenna %d mode %d\n", 177 i, arg->nallchans, 178 ch->mhz, ch->maxpower, ch->maxregpower, 179 ch->antennamax, ch->phy_mode); 180 181 ch++; 182 /* TODO: use quarrter/half rate, cfreq12, dfs_cfreq2 183 * set_agile, reg_class_idx 184 */ 185 } 186 } 187 188 ret = ath12k_wmi_send_scan_chan_list_cmd(ar, arg); 189 kfree(arg); 190 191 return ret; 192 } 193 194 static void ath12k_copy_regd(struct ieee80211_regdomain *regd_orig, 195 struct ieee80211_regdomain *regd_copy) 196 { 197 u8 i; 198 199 /* The caller should have checked error conditions */ 200 memcpy(regd_copy, regd_orig, sizeof(*regd_orig)); 201 202 for (i = 0; i < regd_orig->n_reg_rules; i++) 203 memcpy(®d_copy->reg_rules[i], ®d_orig->reg_rules[i], 204 sizeof(struct ieee80211_reg_rule)); 205 } 206 207 int ath12k_regd_update(struct ath12k *ar, bool init) 208 { 209 struct ieee80211_hw *hw = ath12k_ar_to_hw(ar); 210 struct ieee80211_regdomain *regd, *regd_copy = NULL; 211 struct ath12k_hw *ah = ar->ah; 212 int ret, regd_len, pdev_id; 213 struct ath12k_base *ab; 214 int i; 215 216 ab = ar->ab; 217 218 /* If one of the radios within ah has already updated the regd for 219 * the wiphy, then avoid setting regd again 220 */ 221 if (ah->regd_updated) 222 return 0; 223 224 /* firmware provides reg rules which are similar for 2 GHz and 5 GHz 225 * pdev but 6 GHz pdev has superset of all rules including rules for 226 * all bands, we prefer 6 GHz pdev's rules to be used for setup of 227 * the wiphy regd. 228 * If 6 GHz pdev was part of the ath12k_hw, wait for the 6 GHz pdev, 229 * else pick the first pdev which calls this function and use its 230 * regd to update global hw regd. 231 * The regd_updated flag set at the end will not allow any further 232 * updates. 233 */ 234 if (ah->use_6ghz_regd && !ar->supports_6ghz) 235 return 0; 236 237 pdev_id = ar->pdev_idx; 238 239 spin_lock_bh(&ab->base_lock); 240 241 if (init) { 242 /* Apply the regd received during init through 243 * WMI_REG_CHAN_LIST_CC event. In case of failure to 244 * receive the regd, initialize with a default world 245 * regulatory. 246 */ 247 if (ab->default_regd[pdev_id]) { 248 regd = ab->default_regd[pdev_id]; 249 } else { 250 ath12k_warn(ab, 251 "failed to receive default regd during init\n"); 252 regd = (struct ieee80211_regdomain *)&ath12k_world_regd; 253 } 254 } else { 255 regd = ab->new_regd[pdev_id]; 256 } 257 258 if (!regd) { 259 ret = -EINVAL; 260 spin_unlock_bh(&ab->base_lock); 261 goto err; 262 } 263 264 regd_len = sizeof(*regd) + (regd->n_reg_rules * 265 sizeof(struct ieee80211_reg_rule)); 266 267 regd_copy = kzalloc(regd_len, GFP_ATOMIC); 268 if (regd_copy) 269 ath12k_copy_regd(regd, regd_copy); 270 271 spin_unlock_bh(&ab->base_lock); 272 273 if (!regd_copy) { 274 ret = -ENOMEM; 275 goto err; 276 } 277 278 rtnl_lock(); 279 wiphy_lock(hw->wiphy); 280 ret = regulatory_set_wiphy_regd_sync(hw->wiphy, regd_copy); 281 wiphy_unlock(hw->wiphy); 282 rtnl_unlock(); 283 284 kfree(regd_copy); 285 286 if (ret) 287 goto err; 288 289 ah->regd_updated = true; 290 /* Apply the new regd to all the radios, this is expected to be received only once 291 * since we check for ah->regd_updated and allow here only once. 292 */ 293 for_each_ar(ah, ar, i) { 294 if (ar->state == ATH12K_STATE_ON) { 295 ab = ar->ab; 296 ret = ath12k_reg_update_chan_list(ar); 297 if (ret) 298 goto err; 299 } 300 } 301 302 return 0; 303 err: 304 ath12k_warn(ab, "failed to perform regd update : %d\n", ret); 305 return ret; 306 } 307 308 static enum nl80211_dfs_regions 309 ath12k_map_fw_dfs_region(enum ath12k_dfs_region dfs_region) 310 { 311 switch (dfs_region) { 312 case ATH12K_DFS_REG_FCC: 313 case ATH12K_DFS_REG_CN: 314 return NL80211_DFS_FCC; 315 case ATH12K_DFS_REG_ETSI: 316 case ATH12K_DFS_REG_KR: 317 return NL80211_DFS_ETSI; 318 case ATH12K_DFS_REG_MKK: 319 case ATH12K_DFS_REG_MKK_N: 320 return NL80211_DFS_JP; 321 default: 322 return NL80211_DFS_UNSET; 323 } 324 } 325 326 static u32 ath12k_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 } 353 354 static u32 ath12k_map_fw_phy_flags(u32 phy_flags) 355 { 356 u32 flags = 0; 357 358 if (phy_flags & ATH12K_REG_PHY_BITMAP_NO11AX) 359 flags |= NL80211_RRF_NO_HE; 360 361 if (phy_flags & ATH12K_REG_PHY_BITMAP_NO11BE) 362 flags |= NL80211_RRF_NO_EHT; 363 364 return flags; 365 } 366 367 static bool 368 ath12k_reg_can_intersect(struct ieee80211_reg_rule *rule1, 369 struct ieee80211_reg_rule *rule2) 370 { 371 u32 start_freq1, end_freq1; 372 u32 start_freq2, end_freq2; 373 374 start_freq1 = rule1->freq_range.start_freq_khz; 375 start_freq2 = rule2->freq_range.start_freq_khz; 376 377 end_freq1 = rule1->freq_range.end_freq_khz; 378 end_freq2 = rule2->freq_range.end_freq_khz; 379 380 if ((start_freq1 >= start_freq2 && 381 start_freq1 < end_freq2) || 382 (start_freq2 > start_freq1 && 383 start_freq2 < end_freq1)) 384 return true; 385 386 /* TODO: Should we restrict intersection feasibility 387 * based on min bandwidth of the intersected region also, 388 * say the intersected rule should have a min bandwidth 389 * of 20MHz? 390 */ 391 392 return false; 393 } 394 395 static void ath12k_reg_intersect_rules(struct ieee80211_reg_rule *rule1, 396 struct ieee80211_reg_rule *rule2, 397 struct ieee80211_reg_rule *new_rule) 398 { 399 u32 start_freq1, end_freq1; 400 u32 start_freq2, end_freq2; 401 u32 freq_diff, max_bw; 402 403 start_freq1 = rule1->freq_range.start_freq_khz; 404 start_freq2 = rule2->freq_range.start_freq_khz; 405 406 end_freq1 = rule1->freq_range.end_freq_khz; 407 end_freq2 = rule2->freq_range.end_freq_khz; 408 409 new_rule->freq_range.start_freq_khz = max_t(u32, start_freq1, 410 start_freq2); 411 new_rule->freq_range.end_freq_khz = min_t(u32, end_freq1, end_freq2); 412 413 freq_diff = new_rule->freq_range.end_freq_khz - 414 new_rule->freq_range.start_freq_khz; 415 max_bw = min_t(u32, rule1->freq_range.max_bandwidth_khz, 416 rule2->freq_range.max_bandwidth_khz); 417 new_rule->freq_range.max_bandwidth_khz = min_t(u32, max_bw, freq_diff); 418 419 new_rule->power_rule.max_antenna_gain = 420 min_t(u32, rule1->power_rule.max_antenna_gain, 421 rule2->power_rule.max_antenna_gain); 422 423 new_rule->power_rule.max_eirp = min_t(u32, rule1->power_rule.max_eirp, 424 rule2->power_rule.max_eirp); 425 426 /* Use the flags of both the rules */ 427 new_rule->flags = rule1->flags | rule2->flags; 428 429 /* To be safe, lts use the max cac timeout of both rules */ 430 new_rule->dfs_cac_ms = max_t(u32, rule1->dfs_cac_ms, 431 rule2->dfs_cac_ms); 432 } 433 434 static struct ieee80211_regdomain * 435 ath12k_regd_intersect(struct ieee80211_regdomain *default_regd, 436 struct ieee80211_regdomain *curr_regd) 437 { 438 u8 num_old_regd_rules, num_curr_regd_rules, num_new_regd_rules; 439 struct ieee80211_reg_rule *old_rule, *curr_rule, *new_rule; 440 struct ieee80211_regdomain *new_regd = NULL; 441 u8 i, j, k; 442 443 num_old_regd_rules = default_regd->n_reg_rules; 444 num_curr_regd_rules = curr_regd->n_reg_rules; 445 num_new_regd_rules = 0; 446 447 /* Find the number of intersecting rules to allocate new regd memory */ 448 for (i = 0; i < num_old_regd_rules; i++) { 449 old_rule = default_regd->reg_rules + i; 450 for (j = 0; j < num_curr_regd_rules; j++) { 451 curr_rule = curr_regd->reg_rules + j; 452 453 if (ath12k_reg_can_intersect(old_rule, curr_rule)) 454 num_new_regd_rules++; 455 } 456 } 457 458 if (!num_new_regd_rules) 459 return NULL; 460 461 new_regd = kzalloc(sizeof(*new_regd) + (num_new_regd_rules * 462 sizeof(struct ieee80211_reg_rule)), 463 GFP_ATOMIC); 464 465 if (!new_regd) 466 return NULL; 467 468 /* We set the new country and dfs region directly and only trim 469 * the freq, power, antenna gain by intersecting with the 470 * default regdomain. Also MAX of the dfs cac timeout is selected. 471 */ 472 new_regd->n_reg_rules = num_new_regd_rules; 473 memcpy(new_regd->alpha2, curr_regd->alpha2, sizeof(new_regd->alpha2)); 474 new_regd->dfs_region = curr_regd->dfs_region; 475 new_rule = new_regd->reg_rules; 476 477 for (i = 0, k = 0; i < num_old_regd_rules; i++) { 478 old_rule = default_regd->reg_rules + i; 479 for (j = 0; j < num_curr_regd_rules; j++) { 480 curr_rule = curr_regd->reg_rules + j; 481 482 if (ath12k_reg_can_intersect(old_rule, curr_rule)) 483 ath12k_reg_intersect_rules(old_rule, curr_rule, 484 (new_rule + k++)); 485 } 486 } 487 return new_regd; 488 } 489 490 static const char * 491 ath12k_reg_get_regdom_str(enum nl80211_dfs_regions dfs_region) 492 { 493 switch (dfs_region) { 494 case NL80211_DFS_FCC: 495 return "FCC"; 496 case NL80211_DFS_ETSI: 497 return "ETSI"; 498 case NL80211_DFS_JP: 499 return "JP"; 500 default: 501 return "UNSET"; 502 } 503 } 504 505 static u16 506 ath12k_reg_adjust_bw(u16 start_freq, u16 end_freq, u16 max_bw) 507 { 508 u16 bw; 509 510 bw = end_freq - start_freq; 511 bw = min_t(u16, bw, max_bw); 512 513 if (bw >= 80 && bw < 160) 514 bw = 80; 515 else if (bw >= 40 && bw < 80) 516 bw = 40; 517 else if (bw < 40) 518 bw = 20; 519 520 return bw; 521 } 522 523 static void 524 ath12k_reg_update_rule(struct ieee80211_reg_rule *reg_rule, u32 start_freq, 525 u32 end_freq, u32 bw, u32 ant_gain, u32 reg_pwr, 526 u32 reg_flags) 527 { 528 reg_rule->freq_range.start_freq_khz = MHZ_TO_KHZ(start_freq); 529 reg_rule->freq_range.end_freq_khz = MHZ_TO_KHZ(end_freq); 530 reg_rule->freq_range.max_bandwidth_khz = MHZ_TO_KHZ(bw); 531 reg_rule->power_rule.max_antenna_gain = DBI_TO_MBI(ant_gain); 532 reg_rule->power_rule.max_eirp = DBM_TO_MBM(reg_pwr); 533 reg_rule->flags = reg_flags; 534 } 535 536 static void 537 ath12k_reg_update_weather_radar_band(struct ath12k_base *ab, 538 struct ieee80211_regdomain *regd, 539 struct ath12k_reg_rule *reg_rule, 540 u8 *rule_idx, u32 flags, u16 max_bw) 541 { 542 u32 end_freq; 543 u16 bw; 544 u8 i; 545 546 i = *rule_idx; 547 548 bw = ath12k_reg_adjust_bw(reg_rule->start_freq, 549 ETSI_WEATHER_RADAR_BAND_LOW, max_bw); 550 551 ath12k_reg_update_rule(regd->reg_rules + i, reg_rule->start_freq, 552 ETSI_WEATHER_RADAR_BAND_LOW, bw, 553 reg_rule->ant_gain, reg_rule->reg_power, 554 flags); 555 556 ath12k_dbg(ab, ATH12K_DBG_REG, 557 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n", 558 i + 1, reg_rule->start_freq, ETSI_WEATHER_RADAR_BAND_LOW, 559 bw, reg_rule->ant_gain, reg_rule->reg_power, 560 regd->reg_rules[i].dfs_cac_ms, 561 flags); 562 563 if (reg_rule->end_freq > ETSI_WEATHER_RADAR_BAND_HIGH) 564 end_freq = ETSI_WEATHER_RADAR_BAND_HIGH; 565 else 566 end_freq = reg_rule->end_freq; 567 568 bw = ath12k_reg_adjust_bw(ETSI_WEATHER_RADAR_BAND_LOW, end_freq, 569 max_bw); 570 571 i++; 572 573 ath12k_reg_update_rule(regd->reg_rules + i, 574 ETSI_WEATHER_RADAR_BAND_LOW, end_freq, bw, 575 reg_rule->ant_gain, reg_rule->reg_power, 576 flags); 577 578 regd->reg_rules[i].dfs_cac_ms = ETSI_WEATHER_RADAR_BAND_CAC_TIMEOUT; 579 580 ath12k_dbg(ab, ATH12K_DBG_REG, 581 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n", 582 i + 1, ETSI_WEATHER_RADAR_BAND_LOW, end_freq, 583 bw, reg_rule->ant_gain, reg_rule->reg_power, 584 regd->reg_rules[i].dfs_cac_ms, 585 flags); 586 587 if (end_freq == reg_rule->end_freq) { 588 regd->n_reg_rules--; 589 *rule_idx = i; 590 return; 591 } 592 593 bw = ath12k_reg_adjust_bw(ETSI_WEATHER_RADAR_BAND_HIGH, 594 reg_rule->end_freq, max_bw); 595 596 i++; 597 598 ath12k_reg_update_rule(regd->reg_rules + i, ETSI_WEATHER_RADAR_BAND_HIGH, 599 reg_rule->end_freq, bw, 600 reg_rule->ant_gain, reg_rule->reg_power, 601 flags); 602 603 ath12k_dbg(ab, ATH12K_DBG_REG, 604 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n", 605 i + 1, ETSI_WEATHER_RADAR_BAND_HIGH, reg_rule->end_freq, 606 bw, reg_rule->ant_gain, reg_rule->reg_power, 607 regd->reg_rules[i].dfs_cac_ms, 608 flags); 609 610 *rule_idx = i; 611 } 612 613 struct ieee80211_regdomain * 614 ath12k_reg_build_regd(struct ath12k_base *ab, 615 struct ath12k_reg_info *reg_info, bool intersect) 616 { 617 struct ieee80211_regdomain *tmp_regd, *default_regd, *new_regd = NULL; 618 struct ath12k_reg_rule *reg_rule; 619 u8 i = 0, j = 0, k = 0; 620 u8 num_rules; 621 u16 max_bw; 622 u32 flags; 623 char alpha2[3]; 624 625 num_rules = reg_info->num_5g_reg_rules + reg_info->num_2g_reg_rules; 626 627 /* FIXME: Currently taking reg rules for 6G only from Indoor AP mode list. 628 * This can be updated to choose the combination dynamically based on AP 629 * type and client type, after complete 6G regulatory support is added. 630 */ 631 if (reg_info->is_ext_reg_event) 632 num_rules += reg_info->num_6g_reg_rules_ap[WMI_REG_INDOOR_AP]; 633 634 if (!num_rules) 635 goto ret; 636 637 /* Add max additional rules to accommodate weather radar band */ 638 if (reg_info->dfs_region == ATH12K_DFS_REG_ETSI) 639 num_rules += 2; 640 641 tmp_regd = kzalloc(sizeof(*tmp_regd) + 642 (num_rules * sizeof(struct ieee80211_reg_rule)), 643 GFP_ATOMIC); 644 if (!tmp_regd) 645 goto ret; 646 647 memcpy(tmp_regd->alpha2, reg_info->alpha2, REG_ALPHA2_LEN + 1); 648 memcpy(alpha2, reg_info->alpha2, REG_ALPHA2_LEN + 1); 649 alpha2[2] = '\0'; 650 tmp_regd->dfs_region = ath12k_map_fw_dfs_region(reg_info->dfs_region); 651 652 ath12k_dbg(ab, ATH12K_DBG_REG, 653 "\r\nCountry %s, CFG Regdomain %s FW Regdomain %d, num_reg_rules %d\n", 654 alpha2, ath12k_reg_get_regdom_str(tmp_regd->dfs_region), 655 reg_info->dfs_region, num_rules); 656 /* Update reg_rules[] below. Firmware is expected to 657 * send these rules in order(2G rules first and then 5G) 658 */ 659 for (; i < num_rules; i++) { 660 if (reg_info->num_2g_reg_rules && 661 (i < reg_info->num_2g_reg_rules)) { 662 reg_rule = reg_info->reg_rules_2g_ptr + i; 663 max_bw = min_t(u16, reg_rule->max_bw, 664 reg_info->max_bw_2g); 665 flags = 0; 666 } else if (reg_info->num_5g_reg_rules && 667 (j < reg_info->num_5g_reg_rules)) { 668 reg_rule = reg_info->reg_rules_5g_ptr + j++; 669 max_bw = min_t(u16, reg_rule->max_bw, 670 reg_info->max_bw_5g); 671 672 /* FW doesn't pass NL80211_RRF_AUTO_BW flag for 673 * BW Auto correction, we can enable this by default 674 * for all 5G rules here. The regulatory core performs 675 * BW correction if required and applies flags as 676 * per other BW rule flags we pass from here 677 */ 678 flags = NL80211_RRF_AUTO_BW; 679 } else if (reg_info->is_ext_reg_event && 680 reg_info->num_6g_reg_rules_ap[WMI_REG_INDOOR_AP] && 681 (k < reg_info->num_6g_reg_rules_ap[WMI_REG_INDOOR_AP])) { 682 reg_rule = reg_info->reg_rules_6g_ap_ptr[WMI_REG_INDOOR_AP] + k++; 683 max_bw = min_t(u16, reg_rule->max_bw, 684 reg_info->max_bw_6g_ap[WMI_REG_INDOOR_AP]); 685 flags = NL80211_RRF_AUTO_BW; 686 } else { 687 break; 688 } 689 690 flags |= ath12k_map_fw_reg_flags(reg_rule->flags); 691 flags |= ath12k_map_fw_phy_flags(reg_info->phybitmap); 692 693 ath12k_reg_update_rule(tmp_regd->reg_rules + i, 694 reg_rule->start_freq, 695 reg_rule->end_freq, max_bw, 696 reg_rule->ant_gain, reg_rule->reg_power, 697 flags); 698 699 /* Update dfs cac timeout if the dfs domain is ETSI and the 700 * new rule covers weather radar band. 701 * Default value of '0' corresponds to 60s timeout, so no 702 * need to update that for other rules. 703 */ 704 if (flags & NL80211_RRF_DFS && 705 reg_info->dfs_region == ATH12K_DFS_REG_ETSI && 706 (reg_rule->end_freq > ETSI_WEATHER_RADAR_BAND_LOW && 707 reg_rule->start_freq < ETSI_WEATHER_RADAR_BAND_HIGH)){ 708 ath12k_reg_update_weather_radar_band(ab, tmp_regd, 709 reg_rule, &i, 710 flags, max_bw); 711 continue; 712 } 713 714 if (reg_info->is_ext_reg_event) { 715 ath12k_dbg(ab, ATH12K_DBG_REG, "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d) (%d, %d)\n", 716 i + 1, reg_rule->start_freq, reg_rule->end_freq, 717 max_bw, reg_rule->ant_gain, reg_rule->reg_power, 718 tmp_regd->reg_rules[i].dfs_cac_ms, 719 flags, reg_rule->psd_flag, reg_rule->psd_eirp); 720 } else { 721 ath12k_dbg(ab, ATH12K_DBG_REG, 722 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n", 723 i + 1, reg_rule->start_freq, reg_rule->end_freq, 724 max_bw, reg_rule->ant_gain, reg_rule->reg_power, 725 tmp_regd->reg_rules[i].dfs_cac_ms, 726 flags); 727 } 728 } 729 730 tmp_regd->n_reg_rules = i; 731 732 if (intersect) { 733 default_regd = ab->default_regd[reg_info->phy_id]; 734 735 /* Get a new regd by intersecting the received regd with 736 * our default regd. 737 */ 738 new_regd = ath12k_regd_intersect(default_regd, tmp_regd); 739 kfree(tmp_regd); 740 if (!new_regd) { 741 ath12k_warn(ab, "Unable to create intersected regdomain\n"); 742 goto ret; 743 } 744 } else { 745 new_regd = tmp_regd; 746 } 747 748 ret: 749 return new_regd; 750 } 751 752 void ath12k_regd_update_work(struct work_struct *work) 753 { 754 struct ath12k *ar = container_of(work, struct ath12k, 755 regd_update_work); 756 int ret; 757 758 ret = ath12k_regd_update(ar, false); 759 if (ret) { 760 /* Firmware has already moved to the new regd. We need 761 * to maintain channel consistency across FW, Host driver 762 * and userspace. Hence as a fallback mechanism we can set 763 * the prev or default country code to the firmware. 764 */ 765 /* TODO: Implement Fallback Mechanism */ 766 } 767 } 768 769 void ath12k_reg_init(struct ieee80211_hw *hw) 770 { 771 hw->wiphy->regulatory_flags = REGULATORY_WIPHY_SELF_MANAGED; 772 hw->wiphy->reg_notifier = ath12k_reg_notifier; 773 } 774 775 void ath12k_reg_free(struct ath12k_base *ab) 776 { 777 int i; 778 779 for (i = 0; i < ab->hw_params->max_radios; i++) { 780 kfree(ab->default_regd[i]); 781 kfree(ab->new_regd[i]); 782 } 783 } 784