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