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_RUNNING) { 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 struct ath12k_wmi_hal_reg_capabilities_ext_arg *reg_cap; 269 u32 phy_id, freq_low, freq_high, supported_bands; 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 reg_cap = &ab->hal_reg_cap[ar->pdev_idx]; 280 281 /* Possible that due to reg change, current limits for supported 282 * frequency changed. Update it. As a first step, reset the 283 * previous values and then compute and set the new values. 284 */ 285 ar->freq_range.start_freq = 0; 286 ar->freq_range.end_freq = 0; 287 288 if (supported_bands & WMI_HOST_WLAN_2GHZ_CAP) { 289 if (ab->hw_params->single_pdev_only) { 290 phy_id = ar->pdev->cap.band[WMI_HOST_WLAN_2GHZ_CAP].phy_id; 291 reg_cap = &ab->hal_reg_cap[phy_id]; 292 } 293 294 freq_low = max(reg_cap->low_2ghz_chan, ab->reg_freq_2ghz.start_freq); 295 freq_high = min(reg_cap->high_2ghz_chan, ab->reg_freq_2ghz.end_freq); 296 297 ath12k_mac_update_freq_range(ar, freq_low, freq_high); 298 } 299 300 if (supported_bands & WMI_HOST_WLAN_5GHZ_CAP && !ar->supports_6ghz) { 301 if (ab->hw_params->single_pdev_only) { 302 phy_id = ar->pdev->cap.band[WMI_HOST_WLAN_5GHZ_CAP].phy_id; 303 reg_cap = &ab->hal_reg_cap[phy_id]; 304 } 305 306 freq_low = max(reg_cap->low_5ghz_chan, ab->reg_freq_5ghz.start_freq); 307 freq_high = min(reg_cap->high_5ghz_chan, ab->reg_freq_5ghz.end_freq); 308 309 ath12k_mac_update_freq_range(ar, freq_low, freq_high); 310 } 311 312 if (supported_bands & WMI_HOST_WLAN_5GHZ_CAP && ar->supports_6ghz) { 313 freq_low = max(reg_cap->low_5ghz_chan, ab->reg_freq_6ghz.start_freq); 314 freq_high = min(reg_cap->high_5ghz_chan, ab->reg_freq_6ghz.end_freq); 315 316 ath12k_mac_update_freq_range(ar, freq_low, freq_high); 317 } 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 const char * 458 ath12k_reg_get_regdom_str(enum nl80211_dfs_regions dfs_region) 459 { 460 switch (dfs_region) { 461 case NL80211_DFS_FCC: 462 return "FCC"; 463 case NL80211_DFS_ETSI: 464 return "ETSI"; 465 case NL80211_DFS_JP: 466 return "JP"; 467 default: 468 return "UNSET"; 469 } 470 } 471 472 static u16 473 ath12k_reg_adjust_bw(u16 start_freq, u16 end_freq, u16 max_bw) 474 { 475 u16 bw; 476 477 bw = end_freq - start_freq; 478 bw = min_t(u16, bw, max_bw); 479 480 if (bw >= 80 && bw < 160) 481 bw = 80; 482 else if (bw >= 40 && bw < 80) 483 bw = 40; 484 else if (bw < 40) 485 bw = 20; 486 487 return bw; 488 } 489 490 static void 491 ath12k_reg_update_rule(struct ieee80211_reg_rule *reg_rule, u32 start_freq, 492 u32 end_freq, u32 bw, u32 ant_gain, u32 reg_pwr, 493 s8 psd, u32 reg_flags) 494 { 495 reg_rule->freq_range.start_freq_khz = MHZ_TO_KHZ(start_freq); 496 reg_rule->freq_range.end_freq_khz = MHZ_TO_KHZ(end_freq); 497 reg_rule->freq_range.max_bandwidth_khz = MHZ_TO_KHZ(bw); 498 reg_rule->power_rule.max_antenna_gain = DBI_TO_MBI(ant_gain); 499 reg_rule->power_rule.max_eirp = DBM_TO_MBM(reg_pwr); 500 reg_rule->psd = psd; 501 reg_rule->flags = reg_flags; 502 } 503 504 static void 505 ath12k_reg_update_weather_radar_band(struct ath12k_base *ab, 506 struct ieee80211_regdomain *regd, 507 struct ath12k_reg_rule *reg_rule, 508 u8 *rule_idx, u32 flags, u16 max_bw) 509 { 510 u32 end_freq; 511 u16 bw; 512 u8 i; 513 514 i = *rule_idx; 515 516 bw = ath12k_reg_adjust_bw(reg_rule->start_freq, 517 ETSI_WEATHER_RADAR_BAND_LOW, max_bw); 518 519 ath12k_reg_update_rule(regd->reg_rules + i, reg_rule->start_freq, 520 ETSI_WEATHER_RADAR_BAND_LOW, bw, 521 reg_rule->ant_gain, reg_rule->reg_power, 522 reg_rule->psd_eirp, flags); 523 524 ath12k_dbg(ab, ATH12K_DBG_REG, 525 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n", 526 i + 1, reg_rule->start_freq, ETSI_WEATHER_RADAR_BAND_LOW, 527 bw, reg_rule->ant_gain, reg_rule->reg_power, 528 regd->reg_rules[i].dfs_cac_ms, 529 flags); 530 531 if (reg_rule->end_freq > ETSI_WEATHER_RADAR_BAND_HIGH) 532 end_freq = ETSI_WEATHER_RADAR_BAND_HIGH; 533 else 534 end_freq = reg_rule->end_freq; 535 536 bw = ath12k_reg_adjust_bw(ETSI_WEATHER_RADAR_BAND_LOW, end_freq, 537 max_bw); 538 539 i++; 540 541 ath12k_reg_update_rule(regd->reg_rules + i, 542 ETSI_WEATHER_RADAR_BAND_LOW, end_freq, bw, 543 reg_rule->ant_gain, reg_rule->reg_power, 544 reg_rule->psd_eirp, flags); 545 546 regd->reg_rules[i].dfs_cac_ms = ETSI_WEATHER_RADAR_BAND_CAC_TIMEOUT; 547 548 ath12k_dbg(ab, ATH12K_DBG_REG, 549 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n", 550 i + 1, ETSI_WEATHER_RADAR_BAND_LOW, end_freq, 551 bw, reg_rule->ant_gain, reg_rule->reg_power, 552 regd->reg_rules[i].dfs_cac_ms, 553 flags); 554 555 if (end_freq == reg_rule->end_freq) { 556 regd->n_reg_rules--; 557 *rule_idx = i; 558 return; 559 } 560 561 bw = ath12k_reg_adjust_bw(ETSI_WEATHER_RADAR_BAND_HIGH, 562 reg_rule->end_freq, max_bw); 563 564 i++; 565 566 ath12k_reg_update_rule(regd->reg_rules + i, ETSI_WEATHER_RADAR_BAND_HIGH, 567 reg_rule->end_freq, bw, 568 reg_rule->ant_gain, reg_rule->reg_power, 569 reg_rule->psd_eirp, flags); 570 571 ath12k_dbg(ab, ATH12K_DBG_REG, 572 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n", 573 i + 1, ETSI_WEATHER_RADAR_BAND_HIGH, reg_rule->end_freq, 574 bw, reg_rule->ant_gain, reg_rule->reg_power, 575 regd->reg_rules[i].dfs_cac_ms, 576 flags); 577 578 *rule_idx = i; 579 } 580 581 static void ath12k_reg_update_freq_range(struct ath12k_reg_freq *reg_freq, 582 struct ath12k_reg_rule *reg_rule) 583 { 584 if (reg_freq->start_freq > reg_rule->start_freq) 585 reg_freq->start_freq = reg_rule->start_freq; 586 587 if (reg_freq->end_freq < reg_rule->end_freq) 588 reg_freq->end_freq = reg_rule->end_freq; 589 } 590 591 enum wmi_reg_6g_ap_type 592 ath12k_reg_ap_pwr_convert(enum ieee80211_ap_reg_power power_type) 593 { 594 switch (power_type) { 595 case IEEE80211_REG_LPI_AP: 596 return WMI_REG_INDOOR_AP; 597 case IEEE80211_REG_SP_AP: 598 return WMI_REG_STD_POWER_AP; 599 case IEEE80211_REG_VLP_AP: 600 return WMI_REG_VLP_AP; 601 default: 602 return WMI_REG_MAX_AP_TYPE; 603 } 604 } 605 606 struct ieee80211_regdomain * 607 ath12k_reg_build_regd(struct ath12k_base *ab, 608 struct ath12k_reg_info *reg_info, 609 enum wmi_vdev_type vdev_type, 610 enum ieee80211_ap_reg_power power_type) 611 { 612 struct ieee80211_regdomain *new_regd = NULL; 613 struct ath12k_reg_rule *reg_rule, *reg_rule_6ghz; 614 u32 flags, reg_6ghz_number, max_bw_6ghz; 615 u8 i = 0, j = 0, k = 0; 616 u8 num_rules; 617 u16 max_bw; 618 char alpha2[3]; 619 620 num_rules = reg_info->num_5g_reg_rules + reg_info->num_2g_reg_rules; 621 622 if (reg_info->is_ext_reg_event) { 623 if (vdev_type == WMI_VDEV_TYPE_STA) { 624 enum wmi_reg_6g_ap_type ap_type; 625 626 ap_type = ath12k_reg_ap_pwr_convert(power_type); 627 if (ap_type == WMI_REG_MAX_AP_TYPE) 628 ap_type = WMI_REG_INDOOR_AP; 629 630 reg_6ghz_number = reg_info->num_6g_reg_rules_cl 631 [ap_type][WMI_REG_DEFAULT_CLIENT]; 632 if (reg_6ghz_number == 0) { 633 ap_type = WMI_REG_INDOOR_AP; 634 reg_6ghz_number = reg_info->num_6g_reg_rules_cl 635 [ap_type][WMI_REG_DEFAULT_CLIENT]; 636 } 637 638 reg_rule_6ghz = reg_info->reg_rules_6g_client_ptr 639 [ap_type][WMI_REG_DEFAULT_CLIENT]; 640 max_bw_6ghz = reg_info->max_bw_6g_client 641 [ap_type][WMI_REG_DEFAULT_CLIENT]; 642 } else { 643 reg_6ghz_number = reg_info->num_6g_reg_rules_ap 644 [WMI_REG_INDOOR_AP]; 645 reg_rule_6ghz = 646 reg_info->reg_rules_6g_ap_ptr[WMI_REG_INDOOR_AP]; 647 max_bw_6ghz = reg_info->max_bw_6g_ap[WMI_REG_INDOOR_AP]; 648 } 649 650 num_rules += reg_6ghz_number; 651 } 652 653 if (!num_rules) 654 goto ret; 655 656 /* Add max additional rules to accommodate weather radar band */ 657 if (reg_info->dfs_region == ATH12K_DFS_REG_ETSI) 658 num_rules += 2; 659 660 new_regd = kzalloc(sizeof(*new_regd) + 661 (num_rules * sizeof(struct ieee80211_reg_rule)), 662 GFP_ATOMIC); 663 if (!new_regd) 664 goto ret; 665 666 memcpy(new_regd->alpha2, reg_info->alpha2, REG_ALPHA2_LEN + 1); 667 memcpy(alpha2, reg_info->alpha2, REG_ALPHA2_LEN + 1); 668 alpha2[2] = '\0'; 669 new_regd->dfs_region = ath12k_map_fw_dfs_region(reg_info->dfs_region); 670 671 ath12k_dbg(ab, ATH12K_DBG_REG, 672 "\r\nCountry %s, CFG Regdomain %s FW Regdomain %d, num_reg_rules %d\n", 673 alpha2, ath12k_reg_get_regdom_str(new_regd->dfs_region), 674 reg_info->dfs_region, num_rules); 675 676 /* Reset start and end frequency for each band 677 */ 678 ab->reg_freq_5ghz.start_freq = INT_MAX; 679 ab->reg_freq_5ghz.end_freq = 0; 680 ab->reg_freq_2ghz.start_freq = INT_MAX; 681 ab->reg_freq_2ghz.end_freq = 0; 682 ab->reg_freq_6ghz.start_freq = INT_MAX; 683 ab->reg_freq_6ghz.end_freq = 0; 684 685 /* Update reg_rules[] below. Firmware is expected to 686 * send these rules in order(2G rules first and then 5G) 687 */ 688 for (; i < num_rules; i++) { 689 if (reg_info->num_2g_reg_rules && 690 (i < reg_info->num_2g_reg_rules)) { 691 reg_rule = reg_info->reg_rules_2g_ptr + i; 692 max_bw = min_t(u16, reg_rule->max_bw, 693 reg_info->max_bw_2g); 694 flags = 0; 695 ath12k_reg_update_freq_range(&ab->reg_freq_2ghz, reg_rule); 696 } else if (reg_info->num_5g_reg_rules && 697 (j < reg_info->num_5g_reg_rules)) { 698 reg_rule = reg_info->reg_rules_5g_ptr + j++; 699 max_bw = min_t(u16, reg_rule->max_bw, 700 reg_info->max_bw_5g); 701 702 /* FW doesn't pass NL80211_RRF_AUTO_BW flag for 703 * BW Auto correction, we can enable this by default 704 * for all 5G rules here. The regulatory core performs 705 * BW correction if required and applies flags as 706 * per other BW rule flags we pass from here 707 */ 708 flags = NL80211_RRF_AUTO_BW; 709 ath12k_reg_update_freq_range(&ab->reg_freq_5ghz, reg_rule); 710 } else if (reg_info->is_ext_reg_event && reg_6ghz_number && 711 (k < reg_6ghz_number)) { 712 reg_rule = reg_rule_6ghz + k++; 713 max_bw = min_t(u16, reg_rule->max_bw, max_bw_6ghz); 714 flags = NL80211_RRF_AUTO_BW; 715 if (reg_rule->psd_flag) 716 flags |= NL80211_RRF_PSD; 717 ath12k_reg_update_freq_range(&ab->reg_freq_6ghz, reg_rule); 718 } else { 719 break; 720 } 721 722 flags |= ath12k_map_fw_reg_flags(reg_rule->flags); 723 flags |= ath12k_map_fw_phy_flags(reg_info->phybitmap); 724 725 ath12k_reg_update_rule(new_regd->reg_rules + i, 726 reg_rule->start_freq, 727 reg_rule->end_freq, max_bw, 728 reg_rule->ant_gain, reg_rule->reg_power, 729 reg_rule->psd_eirp, flags); 730 731 /* Update dfs cac timeout if the dfs domain is ETSI and the 732 * new rule covers weather radar band. 733 * Default value of '0' corresponds to 60s timeout, so no 734 * need to update that for other rules. 735 */ 736 if (flags & NL80211_RRF_DFS && 737 reg_info->dfs_region == ATH12K_DFS_REG_ETSI && 738 (reg_rule->end_freq > ETSI_WEATHER_RADAR_BAND_LOW && 739 reg_rule->start_freq < ETSI_WEATHER_RADAR_BAND_HIGH)){ 740 ath12k_reg_update_weather_radar_band(ab, new_regd, 741 reg_rule, &i, 742 flags, max_bw); 743 continue; 744 } 745 746 if (reg_info->is_ext_reg_event) { 747 ath12k_dbg(ab, ATH12K_DBG_REG, "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d) (%d, %d)\n", 748 i + 1, reg_rule->start_freq, reg_rule->end_freq, 749 max_bw, reg_rule->ant_gain, reg_rule->reg_power, 750 new_regd->reg_rules[i].dfs_cac_ms, 751 flags, reg_rule->psd_flag, reg_rule->psd_eirp); 752 } else { 753 ath12k_dbg(ab, ATH12K_DBG_REG, 754 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n", 755 i + 1, reg_rule->start_freq, reg_rule->end_freq, 756 max_bw, reg_rule->ant_gain, reg_rule->reg_power, 757 new_regd->reg_rules[i].dfs_cac_ms, 758 flags); 759 } 760 } 761 762 new_regd->n_reg_rules = i; 763 ret: 764 return new_regd; 765 } 766 767 void ath12k_regd_update_work(struct work_struct *work) 768 { 769 struct ath12k *ar = container_of(work, struct ath12k, 770 regd_update_work); 771 int ret; 772 773 ret = ath12k_regd_update(ar, false); 774 if (ret) { 775 /* Firmware has already moved to the new regd. We need 776 * to maintain channel consistency across FW, Host driver 777 * and userspace. Hence as a fallback mechanism we can set 778 * the prev or default country code to the firmware. 779 */ 780 /* TODO: Implement Fallback Mechanism */ 781 } 782 } 783 784 void ath12k_reg_reset_reg_info(struct ath12k_reg_info *reg_info) 785 { 786 u8 i, j; 787 788 if (!reg_info) 789 return; 790 791 kfree(reg_info->reg_rules_2g_ptr); 792 kfree(reg_info->reg_rules_5g_ptr); 793 794 if (reg_info->is_ext_reg_event) { 795 for (i = 0; i < WMI_REG_CURRENT_MAX_AP_TYPE; i++) { 796 kfree(reg_info->reg_rules_6g_ap_ptr[i]); 797 798 for (j = 0; j < WMI_REG_MAX_CLIENT_TYPE; j++) 799 kfree(reg_info->reg_rules_6g_client_ptr[i][j]); 800 } 801 } 802 } 803 804 enum ath12k_reg_status ath12k_reg_validate_reg_info(struct ath12k_base *ab, 805 struct ath12k_reg_info *reg_info) 806 { 807 int pdev_idx = reg_info->phy_id; 808 809 if (reg_info->status_code != REG_SET_CC_STATUS_PASS) { 810 /* In case of failure to set the requested country, 811 * firmware retains the current regd. We print a failure info 812 * and return from here. 813 */ 814 ath12k_warn(ab, "Failed to set the requested Country regulatory setting\n"); 815 return ATH12K_REG_STATUS_DROP; 816 } 817 818 if (pdev_idx >= ab->num_radios) { 819 /* Process the event for phy0 only if single_pdev_only 820 * is true. If pdev_idx is valid but not 0, discard the 821 * event. Otherwise, it goes to fallback. 822 */ 823 if (ab->hw_params->single_pdev_only && 824 pdev_idx < ab->hw_params->num_rxdma_per_pdev) 825 return ATH12K_REG_STATUS_DROP; 826 else 827 return ATH12K_REG_STATUS_FALLBACK; 828 } 829 830 /* Avoid multiple overwrites to default regd, during core 831 * stop-start after mac registration. 832 */ 833 if (ab->default_regd[pdev_idx] && !ab->new_regd[pdev_idx] && 834 !memcmp(ab->default_regd[pdev_idx]->alpha2, 835 reg_info->alpha2, 2)) 836 return ATH12K_REG_STATUS_DROP; 837 838 return ATH12K_REG_STATUS_VALID; 839 } 840 841 int ath12k_reg_handle_chan_list(struct ath12k_base *ab, 842 struct ath12k_reg_info *reg_info, 843 enum wmi_vdev_type vdev_type, 844 enum ieee80211_ap_reg_power power_type) 845 { 846 struct ieee80211_regdomain *regd = NULL; 847 int pdev_idx = reg_info->phy_id; 848 struct ath12k *ar; 849 850 regd = ath12k_reg_build_regd(ab, reg_info, vdev_type, power_type); 851 if (!regd) 852 return -EINVAL; 853 854 spin_lock_bh(&ab->base_lock); 855 if (test_bit(ATH12K_FLAG_REGISTERED, &ab->dev_flags)) { 856 /* Once mac is registered, ar is valid and all CC events from 857 * firmware is considered to be received due to user requests 858 * currently. 859 * Free previously built regd before assigning the newly 860 * generated regd to ar. NULL pointer handling will be 861 * taken care by kfree itself. 862 */ 863 ar = ab->pdevs[pdev_idx].ar; 864 kfree(ab->new_regd[pdev_idx]); 865 ab->new_regd[pdev_idx] = regd; 866 queue_work(ab->workqueue, &ar->regd_update_work); 867 } else { 868 /* Multiple events for the same *ar is not expected. But we 869 * can still clear any previously stored default_regd if we 870 * are receiving this event for the same radio by mistake. 871 * NULL pointer handling will be taken care by kfree itself. 872 */ 873 kfree(ab->default_regd[pdev_idx]); 874 /* This regd would be applied during mac registration */ 875 ab->default_regd[pdev_idx] = regd; 876 } 877 ab->dfs_region = reg_info->dfs_region; 878 spin_unlock_bh(&ab->base_lock); 879 880 return 0; 881 } 882 883 void ath12k_reg_init(struct ieee80211_hw *hw) 884 { 885 hw->wiphy->regulatory_flags = REGULATORY_WIPHY_SELF_MANAGED; 886 hw->wiphy->flags |= WIPHY_FLAG_NOTIFY_REGDOM_BY_DRIVER; 887 hw->wiphy->reg_notifier = ath12k_reg_notifier; 888 } 889 890 void ath12k_reg_free(struct ath12k_base *ab) 891 { 892 int i; 893 894 mutex_lock(&ab->core_lock); 895 for (i = 0; i < MAX_RADIOS; i++) { 896 ath12k_reg_reset_reg_info(ab->reg_info[i]); 897 kfree(ab->reg_info[i]); 898 ab->reg_info[i] = NULL; 899 } 900 901 for (i = 0; i < ab->hw_params->max_radios; i++) { 902 kfree(ab->default_regd[i]); 903 kfree(ab->new_regd[i]); 904 ab->default_regd[i] = NULL; 905 ab->new_regd[i] = NULL; 906 } 907 mutex_unlock(&ab->core_lock); 908 } 909