1 // SPDX-License-Identifier: BSD-3-Clause-Clear 2 /* 3 * Copyright (c) 2018-2021 The Linux Foundation. All rights reserved. 4 * Copyright (c) 2021-2025 Qualcomm Innovation Center, Inc. All rights reserved. 5 */ 6 #include <linux/rtnetlink.h> 7 #include "core.h" 8 #include "debug.h" 9 #include "mac.h" 10 11 /* World regdom to be used in case default regd from fw is unavailable */ 12 #define ATH12K_2GHZ_CH01_11 REG_RULE(2412 - 10, 2462 + 10, 40, 0, 20, 0) 13 #define ATH12K_5GHZ_5150_5350 REG_RULE(5150 - 10, 5350 + 10, 80, 0, 30,\ 14 NL80211_RRF_NO_IR) 15 #define ATH12K_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 5590 19 #define ETSI_WEATHER_RADAR_BAND_HIGH 5650 20 #define ETSI_WEATHER_RADAR_BAND_CAC_TIMEOUT 600000 21 22 static const struct ieee80211_regdomain ath12k_world_regd = { 23 .n_reg_rules = 3, 24 .alpha2 = "00", 25 .reg_rules = { 26 ATH12K_2GHZ_CH01_11, 27 ATH12K_5GHZ_5150_5350, 28 ATH12K_5GHZ_5725_5850, 29 } 30 }; 31 32 static bool ath12k_regdom_changes(struct ieee80211_hw *hw, char *alpha2) 33 { 34 const struct ieee80211_regdomain *regd; 35 36 regd = rcu_dereference_rtnl(hw->wiphy->regd); 37 /* This can happen during wiphy registration where the previous 38 * user request is received before we update the regd received 39 * from firmware. 40 */ 41 if (!regd) 42 return true; 43 44 return memcmp(regd->alpha2, alpha2, 2) != 0; 45 } 46 47 static void 48 ath12k_reg_notifier(struct wiphy *wiphy, struct regulatory_request *request) 49 { 50 struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy); 51 struct ath12k_wmi_init_country_arg arg; 52 struct wmi_set_current_country_arg current_arg = {}; 53 struct ath12k_hw *ah = ath12k_hw_to_ah(hw); 54 struct ath12k *ar = ath12k_ah_to_ar(ah, 0); 55 int ret, i; 56 57 ath12k_dbg(ar->ab, ATH12K_DBG_REG, 58 "Regulatory Notification received for %s\n", wiphy_name(wiphy)); 59 60 if (request->initiator == NL80211_REGDOM_SET_BY_DRIVER) { 61 ath12k_dbg(ar->ab, ATH12K_DBG_REG, 62 "driver initiated regd update\n"); 63 if (ah->state != ATH12K_HW_STATE_ON) 64 return; 65 66 for_each_ar(ah, ar, i) { 67 ret = ath12k_reg_update_chan_list(ar, true); 68 if (ret) { 69 ath12k_warn(ar->ab, 70 "failed to update chan list for pdev %u, ret %d\n", 71 i, ret); 72 break; 73 } 74 } 75 return; 76 } 77 78 /* Currently supporting only General User Hints. Cell base user 79 * hints to be handled later. 80 * Hints from other sources like Core, Beacons are not expected for 81 * self managed wiphy's 82 */ 83 if (!(request->initiator == NL80211_REGDOM_SET_BY_USER && 84 request->user_reg_hint_type == NL80211_USER_REG_HINT_USER)) { 85 ath12k_warn(ar->ab, "Unexpected Regulatory event for this wiphy\n"); 86 return; 87 } 88 89 if (!IS_ENABLED(CONFIG_ATH_REG_DYNAMIC_USER_REG_HINTS)) { 90 ath12k_dbg(ar->ab, ATH12K_DBG_REG, 91 "Country Setting is not allowed\n"); 92 return; 93 } 94 95 if (!ath12k_regdom_changes(hw, request->alpha2)) { 96 ath12k_dbg(ar->ab, ATH12K_DBG_REG, "Country is already set\n"); 97 return; 98 } 99 100 /* Allow fresh updates to wiphy regd */ 101 ah->regd_updated = false; 102 103 /* Send the reg change request to all the radios */ 104 for_each_ar(ah, ar, i) { 105 if (ar->ab->hw_params->current_cc_support) { 106 memcpy(¤t_arg.alpha2, request->alpha2, 2); 107 memcpy(&ar->alpha2, ¤t_arg.alpha2, 2); 108 ret = ath12k_wmi_send_set_current_country_cmd(ar, ¤t_arg); 109 if (ret) 110 ath12k_warn(ar->ab, 111 "failed set current country code: %d\n", ret); 112 } else { 113 arg.flags = ALPHA_IS_SET; 114 memcpy(&arg.cc_info.alpha2, request->alpha2, 2); 115 arg.cc_info.alpha2[2] = 0; 116 117 ret = ath12k_wmi_send_init_country_cmd(ar, &arg); 118 if (ret) 119 ath12k_warn(ar->ab, 120 "failed set INIT Country code: %d\n", ret); 121 } 122 123 wiphy_lock(wiphy); 124 ath12k_mac_11d_scan_stop(ar); 125 wiphy_unlock(wiphy); 126 127 ar->regdom_set_by_user = true; 128 } 129 } 130 131 int ath12k_reg_update_chan_list(struct ath12k *ar, bool wait) 132 { 133 struct ieee80211_supported_band **bands; 134 struct ath12k_wmi_scan_chan_list_arg *arg; 135 struct ieee80211_channel *channel; 136 struct ieee80211_hw *hw = ath12k_ar_to_hw(ar); 137 struct ath12k_wmi_channel_arg *ch; 138 enum nl80211_band band; 139 int num_channels = 0; 140 int i, ret, left; 141 142 if (wait && ar->state_11d != ATH12K_11D_IDLE) { 143 left = wait_for_completion_timeout(&ar->completed_11d_scan, 144 ATH12K_SCAN_TIMEOUT_HZ); 145 if (!left) { 146 ath12k_dbg(ar->ab, ATH12K_DBG_REG, 147 "failed to receive 11d scan complete: timed out\n"); 148 ar->state_11d = ATH12K_11D_IDLE; 149 } 150 ath12k_dbg(ar->ab, ATH12K_DBG_REG, 151 "reg 11d scan wait left time %d\n", left); 152 } 153 154 if (wait && 155 (ar->scan.state == ATH12K_SCAN_STARTING || 156 ar->scan.state == ATH12K_SCAN_RUNNING)) { 157 left = wait_for_completion_timeout(&ar->scan.completed, 158 ATH12K_SCAN_TIMEOUT_HZ); 159 if (!left) 160 ath12k_dbg(ar->ab, ATH12K_DBG_REG, 161 "failed to receive hw scan complete: timed out\n"); 162 163 ath12k_dbg(ar->ab, ATH12K_DBG_REG, 164 "reg hw scan wait left time %d\n", left); 165 } 166 167 if (ar->ah->state == ATH12K_HW_STATE_RESTARTING) 168 return 0; 169 170 bands = hw->wiphy->bands; 171 for (band = 0; band < NUM_NL80211_BANDS; band++) { 172 if (!(ar->mac.sbands[band].channels && bands[band])) 173 continue; 174 175 for (i = 0; i < bands[band]->n_channels; i++) { 176 if (bands[band]->channels[i].flags & 177 IEEE80211_CHAN_DISABLED) 178 continue; 179 180 num_channels++; 181 } 182 } 183 184 if (WARN_ON(!num_channels)) 185 return -EINVAL; 186 187 arg = kzalloc(struct_size(arg, channel, num_channels), GFP_KERNEL); 188 189 if (!arg) 190 return -ENOMEM; 191 192 arg->pdev_id = ar->pdev->pdev_id; 193 arg->nallchans = num_channels; 194 195 ch = arg->channel; 196 197 for (band = 0; band < NUM_NL80211_BANDS; band++) { 198 if (!(ar->mac.sbands[band].channels && bands[band])) 199 continue; 200 201 for (i = 0; i < bands[band]->n_channels; i++) { 202 channel = &bands[band]->channels[i]; 203 204 if (channel->flags & IEEE80211_CHAN_DISABLED) 205 continue; 206 207 /* TODO: Set to true/false based on some condition? */ 208 ch->allow_ht = true; 209 ch->allow_vht = true; 210 ch->allow_he = true; 211 212 ch->dfs_set = 213 !!(channel->flags & IEEE80211_CHAN_RADAR); 214 ch->is_chan_passive = !!(channel->flags & 215 IEEE80211_CHAN_NO_IR); 216 ch->is_chan_passive |= ch->dfs_set; 217 ch->mhz = channel->center_freq; 218 ch->cfreq1 = channel->center_freq; 219 ch->minpower = 0; 220 ch->maxpower = channel->max_power * 2; 221 ch->maxregpower = channel->max_reg_power * 2; 222 ch->antennamax = channel->max_antenna_gain * 2; 223 224 /* TODO: Use appropriate phymodes */ 225 if (channel->band == NL80211_BAND_2GHZ) 226 ch->phy_mode = MODE_11G; 227 else 228 ch->phy_mode = MODE_11A; 229 230 if (channel->band == NL80211_BAND_6GHZ && 231 cfg80211_channel_is_psc(channel)) 232 ch->psc_channel = true; 233 234 ath12k_dbg(ar->ab, ATH12K_DBG_WMI, 235 "mac channel [%d/%d] freq %d maxpower %d regpower %d antenna %d mode %d\n", 236 i, arg->nallchans, 237 ch->mhz, ch->maxpower, ch->maxregpower, 238 ch->antennamax, ch->phy_mode); 239 240 ch++; 241 /* TODO: use quarrter/half rate, cfreq12, dfs_cfreq2 242 * set_agile, reg_class_idx 243 */ 244 } 245 } 246 247 ret = ath12k_wmi_send_scan_chan_list_cmd(ar, arg); 248 kfree(arg); 249 250 return ret; 251 } 252 253 static void ath12k_copy_regd(struct ieee80211_regdomain *regd_orig, 254 struct ieee80211_regdomain *regd_copy) 255 { 256 u8 i; 257 258 /* The caller should have checked error conditions */ 259 memcpy(regd_copy, regd_orig, sizeof(*regd_orig)); 260 261 for (i = 0; i < regd_orig->n_reg_rules; i++) 262 memcpy(®d_copy->reg_rules[i], ®d_orig->reg_rules[i], 263 sizeof(struct ieee80211_reg_rule)); 264 } 265 266 int ath12k_regd_update(struct ath12k *ar, bool init) 267 { 268 u32 phy_id, freq_low = 0, freq_high = 0, supported_bands, band; 269 struct ath12k_wmi_hal_reg_capabilities_ext_arg *reg_cap; 270 struct ath12k_hw *ah = ath12k_ar_to_ah(ar); 271 struct ieee80211_hw *hw = ah->hw; 272 struct ieee80211_regdomain *regd, *regd_copy = NULL; 273 int ret, regd_len, pdev_id; 274 struct ath12k_base *ab; 275 276 ab = ar->ab; 277 278 supported_bands = ar->pdev->cap.supported_bands; 279 if (supported_bands & WMI_HOST_WLAN_2GHZ_CAP) { 280 band = NL80211_BAND_2GHZ; 281 } else if (supported_bands & WMI_HOST_WLAN_5GHZ_CAP && !ar->supports_6ghz) { 282 band = NL80211_BAND_5GHZ; 283 } else if (supported_bands & WMI_HOST_WLAN_5GHZ_CAP && ar->supports_6ghz) { 284 band = NL80211_BAND_6GHZ; 285 } else { 286 /* This condition is not expected. 287 */ 288 WARN_ON(1); 289 ret = -EINVAL; 290 goto err; 291 } 292 293 reg_cap = &ab->hal_reg_cap[ar->pdev_idx]; 294 295 if (ab->hw_params->single_pdev_only && !ar->supports_6ghz) { 296 phy_id = ar->pdev->cap.band[band].phy_id; 297 reg_cap = &ab->hal_reg_cap[phy_id]; 298 } 299 300 /* Possible that due to reg change, current limits for supported 301 * frequency changed. Update that 302 */ 303 if (supported_bands & WMI_HOST_WLAN_2GHZ_CAP) { 304 freq_low = max(reg_cap->low_2ghz_chan, ab->reg_freq_2ghz.start_freq); 305 freq_high = min(reg_cap->high_2ghz_chan, ab->reg_freq_2ghz.end_freq); 306 } else if (supported_bands & WMI_HOST_WLAN_5GHZ_CAP && !ar->supports_6ghz) { 307 freq_low = max(reg_cap->low_5ghz_chan, ab->reg_freq_5ghz.start_freq); 308 freq_high = min(reg_cap->high_5ghz_chan, ab->reg_freq_5ghz.end_freq); 309 } else if (supported_bands & WMI_HOST_WLAN_5GHZ_CAP && ar->supports_6ghz) { 310 freq_low = max(reg_cap->low_5ghz_chan, ab->reg_freq_6ghz.start_freq); 311 freq_high = min(reg_cap->high_5ghz_chan, ab->reg_freq_6ghz.end_freq); 312 } 313 314 ath12k_mac_update_freq_range(ar, freq_low, freq_high); 315 316 ath12k_dbg(ab, ATH12K_DBG_REG, "pdev %u reg updated freq limits %u->%u MHz\n", 317 ar->pdev->pdev_id, freq_low, freq_high); 318 319 /* If one of the radios within ah has already updated the regd for 320 * the wiphy, then avoid setting regd again 321 */ 322 if (ah->regd_updated) 323 return 0; 324 325 /* firmware provides reg rules which are similar for 2 GHz and 5 GHz 326 * pdev but 6 GHz pdev has superset of all rules including rules for 327 * all bands, we prefer 6 GHz pdev's rules to be used for setup of 328 * the wiphy regd. 329 * If 6 GHz pdev was part of the ath12k_hw, wait for the 6 GHz pdev, 330 * else pick the first pdev which calls this function and use its 331 * regd to update global hw regd. 332 * The regd_updated flag set at the end will not allow any further 333 * updates. 334 */ 335 if (ah->use_6ghz_regd && !ar->supports_6ghz) 336 return 0; 337 338 pdev_id = ar->pdev_idx; 339 340 spin_lock_bh(&ab->base_lock); 341 342 if (init) { 343 /* Apply the regd received during init through 344 * WMI_REG_CHAN_LIST_CC event. In case of failure to 345 * receive the regd, initialize with a default world 346 * regulatory. 347 */ 348 if (ab->default_regd[pdev_id]) { 349 regd = ab->default_regd[pdev_id]; 350 } else { 351 ath12k_warn(ab, 352 "failed to receive default regd during init\n"); 353 regd = (struct ieee80211_regdomain *)&ath12k_world_regd; 354 } 355 } else { 356 regd = ab->new_regd[pdev_id]; 357 } 358 359 if (!regd) { 360 ret = -EINVAL; 361 spin_unlock_bh(&ab->base_lock); 362 goto err; 363 } 364 365 regd_len = sizeof(*regd) + (regd->n_reg_rules * 366 sizeof(struct ieee80211_reg_rule)); 367 368 regd_copy = kzalloc(regd_len, GFP_ATOMIC); 369 if (regd_copy) 370 ath12k_copy_regd(regd, regd_copy); 371 372 spin_unlock_bh(&ab->base_lock); 373 374 if (!regd_copy) { 375 ret = -ENOMEM; 376 goto err; 377 } 378 379 ret = regulatory_set_wiphy_regd(hw->wiphy, regd_copy); 380 381 kfree(regd_copy); 382 383 if (ret) 384 goto err; 385 386 if (ah->state != ATH12K_HW_STATE_ON) 387 goto skip; 388 389 ah->regd_updated = true; 390 391 skip: 392 return 0; 393 err: 394 ath12k_warn(ab, "failed to perform regd update : %d\n", ret); 395 return ret; 396 } 397 398 static enum nl80211_dfs_regions 399 ath12k_map_fw_dfs_region(enum ath12k_dfs_region dfs_region) 400 { 401 switch (dfs_region) { 402 case ATH12K_DFS_REG_FCC: 403 case ATH12K_DFS_REG_CN: 404 return NL80211_DFS_FCC; 405 case ATH12K_DFS_REG_ETSI: 406 case ATH12K_DFS_REG_KR: 407 return NL80211_DFS_ETSI; 408 case ATH12K_DFS_REG_MKK: 409 case ATH12K_DFS_REG_MKK_N: 410 return NL80211_DFS_JP; 411 default: 412 return NL80211_DFS_UNSET; 413 } 414 } 415 416 static u32 ath12k_map_fw_reg_flags(u16 reg_flags) 417 { 418 u32 flags = 0; 419 420 if (reg_flags & REGULATORY_CHAN_NO_IR) 421 flags = NL80211_RRF_NO_IR; 422 423 if (reg_flags & REGULATORY_CHAN_RADAR) 424 flags |= NL80211_RRF_DFS; 425 426 if (reg_flags & REGULATORY_CHAN_NO_OFDM) 427 flags |= NL80211_RRF_NO_OFDM; 428 429 if (reg_flags & REGULATORY_CHAN_INDOOR_ONLY) 430 flags |= NL80211_RRF_NO_OUTDOOR; 431 432 if (reg_flags & REGULATORY_CHAN_NO_HT40) 433 flags |= NL80211_RRF_NO_HT40; 434 435 if (reg_flags & REGULATORY_CHAN_NO_80MHZ) 436 flags |= NL80211_RRF_NO_80MHZ; 437 438 if (reg_flags & REGULATORY_CHAN_NO_160MHZ) 439 flags |= NL80211_RRF_NO_160MHZ; 440 441 return flags; 442 } 443 444 static u32 ath12k_map_fw_phy_flags(u32 phy_flags) 445 { 446 u32 flags = 0; 447 448 if (phy_flags & ATH12K_REG_PHY_BITMAP_NO11AX) 449 flags |= NL80211_RRF_NO_HE; 450 451 if (phy_flags & ATH12K_REG_PHY_BITMAP_NO11BE) 452 flags |= NL80211_RRF_NO_EHT; 453 454 return flags; 455 } 456 457 static bool 458 ath12k_reg_can_intersect(struct ieee80211_reg_rule *rule1, 459 struct ieee80211_reg_rule *rule2) 460 { 461 u32 start_freq1, end_freq1; 462 u32 start_freq2, end_freq2; 463 464 start_freq1 = rule1->freq_range.start_freq_khz; 465 start_freq2 = rule2->freq_range.start_freq_khz; 466 467 end_freq1 = rule1->freq_range.end_freq_khz; 468 end_freq2 = rule2->freq_range.end_freq_khz; 469 470 if ((start_freq1 >= start_freq2 && 471 start_freq1 < end_freq2) || 472 (start_freq2 > start_freq1 && 473 start_freq2 < end_freq1)) 474 return true; 475 476 /* TODO: Should we restrict intersection feasibility 477 * based on min bandwidth of the intersected region also, 478 * say the intersected rule should have a min bandwidth 479 * of 20MHz? 480 */ 481 482 return false; 483 } 484 485 static void ath12k_reg_intersect_rules(struct ieee80211_reg_rule *rule1, 486 struct ieee80211_reg_rule *rule2, 487 struct ieee80211_reg_rule *new_rule) 488 { 489 u32 start_freq1, end_freq1; 490 u32 start_freq2, end_freq2; 491 u32 freq_diff, max_bw; 492 493 start_freq1 = rule1->freq_range.start_freq_khz; 494 start_freq2 = rule2->freq_range.start_freq_khz; 495 496 end_freq1 = rule1->freq_range.end_freq_khz; 497 end_freq2 = rule2->freq_range.end_freq_khz; 498 499 new_rule->freq_range.start_freq_khz = max_t(u32, start_freq1, 500 start_freq2); 501 new_rule->freq_range.end_freq_khz = min_t(u32, end_freq1, end_freq2); 502 503 freq_diff = new_rule->freq_range.end_freq_khz - 504 new_rule->freq_range.start_freq_khz; 505 max_bw = min_t(u32, rule1->freq_range.max_bandwidth_khz, 506 rule2->freq_range.max_bandwidth_khz); 507 new_rule->freq_range.max_bandwidth_khz = min_t(u32, max_bw, freq_diff); 508 509 new_rule->power_rule.max_antenna_gain = 510 min_t(u32, rule1->power_rule.max_antenna_gain, 511 rule2->power_rule.max_antenna_gain); 512 513 new_rule->power_rule.max_eirp = min_t(u32, rule1->power_rule.max_eirp, 514 rule2->power_rule.max_eirp); 515 516 /* Use the flags of both the rules */ 517 new_rule->flags = rule1->flags | rule2->flags; 518 519 /* To be safe, lts use the max cac timeout of both rules */ 520 new_rule->dfs_cac_ms = max_t(u32, rule1->dfs_cac_ms, 521 rule2->dfs_cac_ms); 522 } 523 524 static struct ieee80211_regdomain * 525 ath12k_regd_intersect(struct ieee80211_regdomain *default_regd, 526 struct ieee80211_regdomain *curr_regd) 527 { 528 u8 num_old_regd_rules, num_curr_regd_rules, num_new_regd_rules; 529 struct ieee80211_reg_rule *old_rule, *curr_rule, *new_rule; 530 struct ieee80211_regdomain *new_regd = NULL; 531 u8 i, j, k; 532 533 num_old_regd_rules = default_regd->n_reg_rules; 534 num_curr_regd_rules = curr_regd->n_reg_rules; 535 num_new_regd_rules = 0; 536 537 /* Find the number of intersecting rules to allocate new regd memory */ 538 for (i = 0; i < num_old_regd_rules; i++) { 539 old_rule = default_regd->reg_rules + i; 540 for (j = 0; j < num_curr_regd_rules; j++) { 541 curr_rule = curr_regd->reg_rules + j; 542 543 if (ath12k_reg_can_intersect(old_rule, curr_rule)) 544 num_new_regd_rules++; 545 } 546 } 547 548 if (!num_new_regd_rules) 549 return NULL; 550 551 new_regd = kzalloc(sizeof(*new_regd) + (num_new_regd_rules * 552 sizeof(struct ieee80211_reg_rule)), 553 GFP_ATOMIC); 554 555 if (!new_regd) 556 return NULL; 557 558 /* We set the new country and dfs region directly and only trim 559 * the freq, power, antenna gain by intersecting with the 560 * default regdomain. Also MAX of the dfs cac timeout is selected. 561 */ 562 new_regd->n_reg_rules = num_new_regd_rules; 563 memcpy(new_regd->alpha2, curr_regd->alpha2, sizeof(new_regd->alpha2)); 564 new_regd->dfs_region = curr_regd->dfs_region; 565 new_rule = new_regd->reg_rules; 566 567 for (i = 0, k = 0; i < num_old_regd_rules; i++) { 568 old_rule = default_regd->reg_rules + i; 569 for (j = 0; j < num_curr_regd_rules; j++) { 570 curr_rule = curr_regd->reg_rules + j; 571 572 if (ath12k_reg_can_intersect(old_rule, curr_rule)) 573 ath12k_reg_intersect_rules(old_rule, curr_rule, 574 (new_rule + k++)); 575 } 576 } 577 return new_regd; 578 } 579 580 static const char * 581 ath12k_reg_get_regdom_str(enum nl80211_dfs_regions dfs_region) 582 { 583 switch (dfs_region) { 584 case NL80211_DFS_FCC: 585 return "FCC"; 586 case NL80211_DFS_ETSI: 587 return "ETSI"; 588 case NL80211_DFS_JP: 589 return "JP"; 590 default: 591 return "UNSET"; 592 } 593 } 594 595 static u16 596 ath12k_reg_adjust_bw(u16 start_freq, u16 end_freq, u16 max_bw) 597 { 598 u16 bw; 599 600 bw = end_freq - start_freq; 601 bw = min_t(u16, bw, max_bw); 602 603 if (bw >= 80 && bw < 160) 604 bw = 80; 605 else if (bw >= 40 && bw < 80) 606 bw = 40; 607 else if (bw < 40) 608 bw = 20; 609 610 return bw; 611 } 612 613 static void 614 ath12k_reg_update_rule(struct ieee80211_reg_rule *reg_rule, u32 start_freq, 615 u32 end_freq, u32 bw, u32 ant_gain, u32 reg_pwr, 616 u32 reg_flags) 617 { 618 reg_rule->freq_range.start_freq_khz = MHZ_TO_KHZ(start_freq); 619 reg_rule->freq_range.end_freq_khz = MHZ_TO_KHZ(end_freq); 620 reg_rule->freq_range.max_bandwidth_khz = MHZ_TO_KHZ(bw); 621 reg_rule->power_rule.max_antenna_gain = DBI_TO_MBI(ant_gain); 622 reg_rule->power_rule.max_eirp = DBM_TO_MBM(reg_pwr); 623 reg_rule->flags = reg_flags; 624 } 625 626 static void 627 ath12k_reg_update_weather_radar_band(struct ath12k_base *ab, 628 struct ieee80211_regdomain *regd, 629 struct ath12k_reg_rule *reg_rule, 630 u8 *rule_idx, u32 flags, u16 max_bw) 631 { 632 u32 end_freq; 633 u16 bw; 634 u8 i; 635 636 i = *rule_idx; 637 638 bw = ath12k_reg_adjust_bw(reg_rule->start_freq, 639 ETSI_WEATHER_RADAR_BAND_LOW, max_bw); 640 641 ath12k_reg_update_rule(regd->reg_rules + i, reg_rule->start_freq, 642 ETSI_WEATHER_RADAR_BAND_LOW, bw, 643 reg_rule->ant_gain, reg_rule->reg_power, 644 flags); 645 646 ath12k_dbg(ab, ATH12K_DBG_REG, 647 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n", 648 i + 1, reg_rule->start_freq, ETSI_WEATHER_RADAR_BAND_LOW, 649 bw, reg_rule->ant_gain, reg_rule->reg_power, 650 regd->reg_rules[i].dfs_cac_ms, 651 flags); 652 653 if (reg_rule->end_freq > ETSI_WEATHER_RADAR_BAND_HIGH) 654 end_freq = ETSI_WEATHER_RADAR_BAND_HIGH; 655 else 656 end_freq = reg_rule->end_freq; 657 658 bw = ath12k_reg_adjust_bw(ETSI_WEATHER_RADAR_BAND_LOW, end_freq, 659 max_bw); 660 661 i++; 662 663 ath12k_reg_update_rule(regd->reg_rules + i, 664 ETSI_WEATHER_RADAR_BAND_LOW, end_freq, bw, 665 reg_rule->ant_gain, reg_rule->reg_power, 666 flags); 667 668 regd->reg_rules[i].dfs_cac_ms = ETSI_WEATHER_RADAR_BAND_CAC_TIMEOUT; 669 670 ath12k_dbg(ab, ATH12K_DBG_REG, 671 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n", 672 i + 1, ETSI_WEATHER_RADAR_BAND_LOW, end_freq, 673 bw, reg_rule->ant_gain, reg_rule->reg_power, 674 regd->reg_rules[i].dfs_cac_ms, 675 flags); 676 677 if (end_freq == reg_rule->end_freq) { 678 regd->n_reg_rules--; 679 *rule_idx = i; 680 return; 681 } 682 683 bw = ath12k_reg_adjust_bw(ETSI_WEATHER_RADAR_BAND_HIGH, 684 reg_rule->end_freq, max_bw); 685 686 i++; 687 688 ath12k_reg_update_rule(regd->reg_rules + i, ETSI_WEATHER_RADAR_BAND_HIGH, 689 reg_rule->end_freq, bw, 690 reg_rule->ant_gain, reg_rule->reg_power, 691 flags); 692 693 ath12k_dbg(ab, ATH12K_DBG_REG, 694 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n", 695 i + 1, ETSI_WEATHER_RADAR_BAND_HIGH, reg_rule->end_freq, 696 bw, reg_rule->ant_gain, reg_rule->reg_power, 697 regd->reg_rules[i].dfs_cac_ms, 698 flags); 699 700 *rule_idx = i; 701 } 702 703 static void ath12k_reg_update_freq_range(struct ath12k_reg_freq *reg_freq, 704 struct ath12k_reg_rule *reg_rule) 705 { 706 if (reg_freq->start_freq > reg_rule->start_freq) 707 reg_freq->start_freq = reg_rule->start_freq; 708 709 if (reg_freq->end_freq < reg_rule->end_freq) 710 reg_freq->end_freq = reg_rule->end_freq; 711 } 712 713 struct ieee80211_regdomain * 714 ath12k_reg_build_regd(struct ath12k_base *ab, 715 struct ath12k_reg_info *reg_info, bool intersect) 716 { 717 struct ieee80211_regdomain *tmp_regd, *default_regd, *new_regd = NULL; 718 struct ath12k_reg_rule *reg_rule; 719 u8 i = 0, j = 0, k = 0; 720 u8 num_rules; 721 u16 max_bw; 722 u32 flags; 723 char alpha2[3]; 724 725 num_rules = reg_info->num_5g_reg_rules + reg_info->num_2g_reg_rules; 726 727 /* FIXME: Currently taking reg rules for 6G only from Indoor AP mode list. 728 * This can be updated to choose the combination dynamically based on AP 729 * type and client type, after complete 6G regulatory support is added. 730 */ 731 if (reg_info->is_ext_reg_event) 732 num_rules += reg_info->num_6g_reg_rules_ap[WMI_REG_INDOOR_AP]; 733 734 if (!num_rules) 735 goto ret; 736 737 /* Add max additional rules to accommodate weather radar band */ 738 if (reg_info->dfs_region == ATH12K_DFS_REG_ETSI) 739 num_rules += 2; 740 741 tmp_regd = kzalloc(sizeof(*tmp_regd) + 742 (num_rules * sizeof(struct ieee80211_reg_rule)), 743 GFP_ATOMIC); 744 if (!tmp_regd) 745 goto ret; 746 747 memcpy(tmp_regd->alpha2, reg_info->alpha2, REG_ALPHA2_LEN + 1); 748 memcpy(alpha2, reg_info->alpha2, REG_ALPHA2_LEN + 1); 749 alpha2[2] = '\0'; 750 tmp_regd->dfs_region = ath12k_map_fw_dfs_region(reg_info->dfs_region); 751 752 ath12k_dbg(ab, ATH12K_DBG_REG, 753 "\r\nCountry %s, CFG Regdomain %s FW Regdomain %d, num_reg_rules %d\n", 754 alpha2, ath12k_reg_get_regdom_str(tmp_regd->dfs_region), 755 reg_info->dfs_region, num_rules); 756 757 /* Reset start and end frequency for each band 758 */ 759 ab->reg_freq_5ghz.start_freq = INT_MAX; 760 ab->reg_freq_5ghz.end_freq = 0; 761 ab->reg_freq_2ghz.start_freq = INT_MAX; 762 ab->reg_freq_2ghz.end_freq = 0; 763 ab->reg_freq_6ghz.start_freq = INT_MAX; 764 ab->reg_freq_6ghz.end_freq = 0; 765 766 /* Update reg_rules[] below. Firmware is expected to 767 * send these rules in order(2G rules first and then 5G) 768 */ 769 for (; i < num_rules; i++) { 770 if (reg_info->num_2g_reg_rules && 771 (i < reg_info->num_2g_reg_rules)) { 772 reg_rule = reg_info->reg_rules_2g_ptr + i; 773 max_bw = min_t(u16, reg_rule->max_bw, 774 reg_info->max_bw_2g); 775 flags = 0; 776 ath12k_reg_update_freq_range(&ab->reg_freq_2ghz, reg_rule); 777 } else if (reg_info->num_5g_reg_rules && 778 (j < reg_info->num_5g_reg_rules)) { 779 reg_rule = reg_info->reg_rules_5g_ptr + j++; 780 max_bw = min_t(u16, reg_rule->max_bw, 781 reg_info->max_bw_5g); 782 783 /* FW doesn't pass NL80211_RRF_AUTO_BW flag for 784 * BW Auto correction, we can enable this by default 785 * for all 5G rules here. The regulatory core performs 786 * BW correction if required and applies flags as 787 * per other BW rule flags we pass from here 788 */ 789 flags = NL80211_RRF_AUTO_BW; 790 ath12k_reg_update_freq_range(&ab->reg_freq_5ghz, reg_rule); 791 } else if (reg_info->is_ext_reg_event && 792 reg_info->num_6g_reg_rules_ap[WMI_REG_INDOOR_AP] && 793 (k < reg_info->num_6g_reg_rules_ap[WMI_REG_INDOOR_AP])) { 794 reg_rule = reg_info->reg_rules_6g_ap_ptr[WMI_REG_INDOOR_AP] + k++; 795 max_bw = min_t(u16, reg_rule->max_bw, 796 reg_info->max_bw_6g_ap[WMI_REG_INDOOR_AP]); 797 flags = NL80211_RRF_AUTO_BW; 798 ath12k_reg_update_freq_range(&ab->reg_freq_6ghz, reg_rule); 799 } else { 800 break; 801 } 802 803 flags |= ath12k_map_fw_reg_flags(reg_rule->flags); 804 flags |= ath12k_map_fw_phy_flags(reg_info->phybitmap); 805 806 ath12k_reg_update_rule(tmp_regd->reg_rules + i, 807 reg_rule->start_freq, 808 reg_rule->end_freq, max_bw, 809 reg_rule->ant_gain, reg_rule->reg_power, 810 flags); 811 812 /* Update dfs cac timeout if the dfs domain is ETSI and the 813 * new rule covers weather radar band. 814 * Default value of '0' corresponds to 60s timeout, so no 815 * need to update that for other rules. 816 */ 817 if (flags & NL80211_RRF_DFS && 818 reg_info->dfs_region == ATH12K_DFS_REG_ETSI && 819 (reg_rule->end_freq > ETSI_WEATHER_RADAR_BAND_LOW && 820 reg_rule->start_freq < ETSI_WEATHER_RADAR_BAND_HIGH)){ 821 ath12k_reg_update_weather_radar_band(ab, tmp_regd, 822 reg_rule, &i, 823 flags, max_bw); 824 continue; 825 } 826 827 if (reg_info->is_ext_reg_event) { 828 ath12k_dbg(ab, ATH12K_DBG_REG, "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d) (%d, %d)\n", 829 i + 1, reg_rule->start_freq, reg_rule->end_freq, 830 max_bw, reg_rule->ant_gain, reg_rule->reg_power, 831 tmp_regd->reg_rules[i].dfs_cac_ms, 832 flags, reg_rule->psd_flag, reg_rule->psd_eirp); 833 } else { 834 ath12k_dbg(ab, ATH12K_DBG_REG, 835 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n", 836 i + 1, reg_rule->start_freq, reg_rule->end_freq, 837 max_bw, reg_rule->ant_gain, reg_rule->reg_power, 838 tmp_regd->reg_rules[i].dfs_cac_ms, 839 flags); 840 } 841 } 842 843 tmp_regd->n_reg_rules = i; 844 845 if (intersect) { 846 default_regd = ab->default_regd[reg_info->phy_id]; 847 848 /* Get a new regd by intersecting the received regd with 849 * our default regd. 850 */ 851 new_regd = ath12k_regd_intersect(default_regd, tmp_regd); 852 kfree(tmp_regd); 853 if (!new_regd) { 854 ath12k_warn(ab, "Unable to create intersected regdomain\n"); 855 goto ret; 856 } 857 } else { 858 new_regd = tmp_regd; 859 } 860 861 ret: 862 return new_regd; 863 } 864 865 void ath12k_regd_update_work(struct work_struct *work) 866 { 867 struct ath12k *ar = container_of(work, struct ath12k, 868 regd_update_work); 869 int ret; 870 871 ret = ath12k_regd_update(ar, false); 872 if (ret) { 873 /* Firmware has already moved to the new regd. We need 874 * to maintain channel consistency across FW, Host driver 875 * and userspace. Hence as a fallback mechanism we can set 876 * the prev or default country code to the firmware. 877 */ 878 /* TODO: Implement Fallback Mechanism */ 879 } 880 } 881 882 void ath12k_reg_init(struct ieee80211_hw *hw) 883 { 884 hw->wiphy->regulatory_flags = REGULATORY_WIPHY_SELF_MANAGED; 885 hw->wiphy->flags |= WIPHY_FLAG_NOTIFY_REGDOM_BY_DRIVER; 886 hw->wiphy->reg_notifier = ath12k_reg_notifier; 887 } 888 889 void ath12k_reg_free(struct ath12k_base *ab) 890 { 891 int i; 892 893 mutex_lock(&ab->core_lock); 894 for (i = 0; i < ab->hw_params->max_radios; i++) { 895 kfree(ab->default_regd[i]); 896 kfree(ab->new_regd[i]); 897 ab->default_regd[i] = NULL; 898 ab->new_regd[i] = NULL; 899 } 900 mutex_unlock(&ab->core_lock); 901 } 902