1 // SPDX-License-Identifier: BSD-3-Clause-Clear 2 /* 3 * Copyright (c) 2018-2019 The Linux Foundation. All rights reserved. 4 */ 5 #include <linux/rtnetlink.h> 6 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 ATH11K_2GHZ_CH01_11 REG_RULE(2412 - 10, 2462 + 10, 40, 0, 20, 0) 12 #define ATH11K_5GHZ_5150_5350 REG_RULE(5150 - 10, 5350 + 10, 80, 0, 30,\ 13 NL80211_RRF_NO_IR) 14 #define ATH11K_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 ath11k_world_regd = { 22 .n_reg_rules = 3, 23 .alpha2 = "00", 24 .reg_rules = { 25 ATH11K_2GHZ_CH01_11, 26 ATH11K_5GHZ_5150_5350, 27 ATH11K_5GHZ_5725_5850, 28 } 29 }; 30 31 static bool ath11k_regdom_changes(struct ath11k *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 ath11k_reg_notifier(struct wiphy *wiphy, struct regulatory_request *request) 48 { 49 struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy); 50 struct wmi_init_country_params init_country_param; 51 struct ath11k *ar = hw->priv; 52 int ret; 53 54 ath11k_dbg(ar->ab, ATH11K_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 ath11k_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 ath11k_dbg(ar->ab, ATH11K_DBG_REG, 70 "Country Setting is not allowed\n"); 71 return; 72 } 73 74 if (!ath11k_regdom_changes(ar, request->alpha2)) { 75 ath11k_dbg(ar->ab, ATH11K_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 init_country_param.flags = ALPHA_IS_SET; 84 memcpy(&init_country_param.cc_info.alpha2, request->alpha2, 2); 85 init_country_param.cc_info.alpha2[2] = 0; 86 87 ret = ath11k_wmi_send_init_country_cmd(ar, init_country_param); 88 if (ret) 89 ath11k_warn(ar->ab, 90 "INIT Country code set to fw failed : %d\n", ret); 91 92 ath11k_mac_11d_scan_stop(ar); 93 ar->regdom_set_by_user = true; 94 } 95 96 int ath11k_reg_update_chan_list(struct ath11k *ar) 97 { 98 struct ieee80211_supported_band **bands; 99 struct scan_chan_list_params *params; 100 struct ieee80211_channel *channel; 101 struct ieee80211_hw *hw = ar->hw; 102 struct channel_param *ch; 103 enum nl80211_band band; 104 int num_channels = 0; 105 int i, ret; 106 107 bands = hw->wiphy->bands; 108 for (band = 0; band < NUM_NL80211_BANDS; band++) { 109 if (!bands[band]) 110 continue; 111 112 for (i = 0; i < bands[band]->n_channels; i++) { 113 if (bands[band]->channels[i].flags & 114 IEEE80211_CHAN_DISABLED) 115 continue; 116 117 num_channels++; 118 } 119 } 120 121 if (WARN_ON(!num_channels)) 122 return -EINVAL; 123 124 params = kzalloc(struct_size(params, ch_param, num_channels), 125 GFP_KERNEL); 126 if (!params) 127 return -ENOMEM; 128 129 params->pdev_id = ar->pdev->pdev_id; 130 params->nallchans = num_channels; 131 132 ch = params->ch_param; 133 134 for (band = 0; band < NUM_NL80211_BANDS; band++) { 135 if (!bands[band]) 136 continue; 137 138 for (i = 0; i < bands[band]->n_channels; i++) { 139 channel = &bands[band]->channels[i]; 140 141 if (channel->flags & IEEE80211_CHAN_DISABLED) 142 continue; 143 144 /* TODO: Set to true/false based on some condition? */ 145 ch->allow_ht = true; 146 ch->allow_vht = true; 147 ch->allow_he = true; 148 149 ch->dfs_set = 150 !!(channel->flags & IEEE80211_CHAN_RADAR); 151 ch->is_chan_passive = !!(channel->flags & 152 IEEE80211_CHAN_NO_IR); 153 ch->is_chan_passive |= ch->dfs_set; 154 ch->mhz = channel->center_freq; 155 ch->cfreq1 = channel->center_freq; 156 ch->minpower = 0; 157 ch->maxpower = channel->max_power * 2; 158 ch->maxregpower = channel->max_reg_power * 2; 159 ch->antennamax = channel->max_antenna_gain * 2; 160 161 /* TODO: Use appropriate phymodes */ 162 if (channel->band == NL80211_BAND_2GHZ) 163 ch->phy_mode = MODE_11G; 164 else 165 ch->phy_mode = MODE_11A; 166 167 if (channel->band == NL80211_BAND_6GHZ && 168 cfg80211_channel_is_psc(channel)) 169 ch->psc_channel = true; 170 171 ath11k_dbg(ar->ab, ATH11K_DBG_WMI, 172 "mac channel [%d/%d] freq %d maxpower %d regpower %d antenna %d mode %d\n", 173 i, params->nallchans, 174 ch->mhz, ch->maxpower, ch->maxregpower, 175 ch->antennamax, ch->phy_mode); 176 177 ch++; 178 /* TODO: use quarrter/half rate, cfreq12, dfs_cfreq2 179 * set_agile, reg_class_idx 180 */ 181 } 182 } 183 184 ret = ath11k_wmi_send_scan_chan_list_cmd(ar, params); 185 kfree(params); 186 187 if (ar->pending_11d) { 188 complete(&ar->finish_11d_ch_list); 189 ar->pending_11d = false; 190 } 191 192 return ret; 193 } 194 195 #if defined(__linux__) 196 static void ath11k_copy_regd(struct ieee80211_regdomain *regd_orig, 197 #elif defined(__FreeBSD__) 198 static void ath11k_copy_regd(const struct ieee80211_regdomain *regd_orig, 199 #endif 200 struct ieee80211_regdomain *regd_copy) 201 { 202 u8 i; 203 204 /* The caller should have checked error conditions */ 205 memcpy(regd_copy, regd_orig, sizeof(*regd_orig)); 206 207 for (i = 0; i < regd_orig->n_reg_rules; i++) 208 memcpy(®d_copy->reg_rules[i], ®d_orig->reg_rules[i], 209 sizeof(struct ieee80211_reg_rule)); 210 } 211 212 int ath11k_regd_update(struct ath11k *ar) 213 { 214 #if defined(__linux__) 215 struct ieee80211_regdomain *regd, *regd_copy = NULL; 216 #elif defined(__FreeBSD__) 217 const struct ieee80211_regdomain *regd; 218 struct ieee80211_regdomain *regd_copy = NULL; 219 #endif 220 int ret, regd_len, pdev_id; 221 struct ath11k_base *ab; 222 223 ab = ar->ab; 224 pdev_id = ar->pdev_idx; 225 226 spin_lock_bh(&ab->base_lock); 227 228 /* Prefer the latest regd update over default if it's available */ 229 if (ab->new_regd[pdev_id]) { 230 regd = ab->new_regd[pdev_id]; 231 } else { 232 /* Apply the regd received during init through 233 * WMI_REG_CHAN_LIST_CC event. In case of failure to 234 * receive the regd, initialize with a default world 235 * regulatory. 236 */ 237 if (ab->default_regd[pdev_id]) { 238 regd = ab->default_regd[pdev_id]; 239 } else { 240 ath11k_warn(ab, 241 "failed to receive default regd during init\n"); 242 #if defined(__linux__) 243 regd = (struct ieee80211_regdomain *)&ath11k_world_regd; 244 #elif defined(__FreeBSD__) 245 regd = &ath11k_world_regd; 246 #endif 247 } 248 } 249 250 if (!regd) { 251 ret = -EINVAL; 252 spin_unlock_bh(&ab->base_lock); 253 goto err; 254 } 255 256 regd_len = sizeof(*regd) + (regd->n_reg_rules * 257 sizeof(struct ieee80211_reg_rule)); 258 259 regd_copy = kzalloc(regd_len, GFP_ATOMIC); 260 if (regd_copy) 261 ath11k_copy_regd(regd, regd_copy); 262 263 spin_unlock_bh(&ab->base_lock); 264 265 if (!regd_copy) { 266 ret = -ENOMEM; 267 goto err; 268 } 269 270 if (ar->pending_11d) 271 complete(&ar->finish_11d_scan); 272 273 rtnl_lock(); 274 wiphy_lock(ar->hw->wiphy); 275 276 if (ar->pending_11d) 277 reinit_completion(&ar->finish_11d_ch_list); 278 279 ret = regulatory_set_wiphy_regd_sync(ar->hw->wiphy, regd_copy); 280 wiphy_unlock(ar->hw->wiphy); 281 rtnl_unlock(); 282 283 kfree(regd_copy); 284 285 if (ret) 286 goto err; 287 288 if (ar->state == ATH11K_STATE_ON) { 289 ret = ath11k_reg_update_chan_list(ar); 290 if (ret) 291 goto err; 292 } 293 294 return 0; 295 err: 296 ath11k_warn(ab, "failed to perform regd update : %d\n", ret); 297 return ret; 298 } 299 300 static enum nl80211_dfs_regions 301 ath11k_map_fw_dfs_region(enum ath11k_dfs_region dfs_region) 302 { 303 switch (dfs_region) { 304 case ATH11K_DFS_REG_FCC: 305 case ATH11K_DFS_REG_CN: 306 return NL80211_DFS_FCC; 307 case ATH11K_DFS_REG_ETSI: 308 case ATH11K_DFS_REG_KR: 309 return NL80211_DFS_ETSI; 310 case ATH11K_DFS_REG_MKK: 311 case ATH11K_DFS_REG_MKK_N: 312 return NL80211_DFS_JP; 313 default: 314 return NL80211_DFS_UNSET; 315 } 316 } 317 318 static u32 ath11k_map_fw_reg_flags(u16 reg_flags) 319 { 320 u32 flags = 0; 321 322 if (reg_flags & REGULATORY_CHAN_NO_IR) 323 flags = NL80211_RRF_NO_IR; 324 325 if (reg_flags & REGULATORY_CHAN_RADAR) 326 flags |= NL80211_RRF_DFS; 327 328 if (reg_flags & REGULATORY_CHAN_NO_OFDM) 329 flags |= NL80211_RRF_NO_OFDM; 330 331 if (reg_flags & REGULATORY_CHAN_INDOOR_ONLY) 332 flags |= NL80211_RRF_NO_OUTDOOR; 333 334 if (reg_flags & REGULATORY_CHAN_NO_HT40) 335 flags |= NL80211_RRF_NO_HT40; 336 337 if (reg_flags & REGULATORY_CHAN_NO_80MHZ) 338 flags |= NL80211_RRF_NO_80MHZ; 339 340 if (reg_flags & REGULATORY_CHAN_NO_160MHZ) 341 flags |= NL80211_RRF_NO_160MHZ; 342 343 return flags; 344 } 345 346 static bool 347 ath11k_reg_can_intersect(struct ieee80211_reg_rule *rule1, 348 struct ieee80211_reg_rule *rule2) 349 { 350 u32 start_freq1, end_freq1; 351 u32 start_freq2, end_freq2; 352 353 start_freq1 = rule1->freq_range.start_freq_khz; 354 start_freq2 = rule2->freq_range.start_freq_khz; 355 356 end_freq1 = rule1->freq_range.end_freq_khz; 357 end_freq2 = rule2->freq_range.end_freq_khz; 358 359 if ((start_freq1 >= start_freq2 && 360 start_freq1 < end_freq2) || 361 (start_freq2 > start_freq1 && 362 start_freq2 < end_freq1)) 363 return true; 364 365 /* TODO: Should we restrict intersection feasibility 366 * based on min bandwidth of the intersected region also, 367 * say the intersected rule should have a min bandwidth 368 * of 20MHz? 369 */ 370 371 return false; 372 } 373 374 static void ath11k_reg_intersect_rules(struct ieee80211_reg_rule *rule1, 375 struct ieee80211_reg_rule *rule2, 376 struct ieee80211_reg_rule *new_rule) 377 { 378 u32 start_freq1, end_freq1; 379 u32 start_freq2, end_freq2; 380 u32 freq_diff, max_bw; 381 382 start_freq1 = rule1->freq_range.start_freq_khz; 383 start_freq2 = rule2->freq_range.start_freq_khz; 384 385 end_freq1 = rule1->freq_range.end_freq_khz; 386 end_freq2 = rule2->freq_range.end_freq_khz; 387 388 new_rule->freq_range.start_freq_khz = max_t(u32, start_freq1, 389 start_freq2); 390 new_rule->freq_range.end_freq_khz = min_t(u32, end_freq1, end_freq2); 391 392 freq_diff = new_rule->freq_range.end_freq_khz - 393 new_rule->freq_range.start_freq_khz; 394 max_bw = min_t(u32, rule1->freq_range.max_bandwidth_khz, 395 rule2->freq_range.max_bandwidth_khz); 396 new_rule->freq_range.max_bandwidth_khz = min_t(u32, max_bw, freq_diff); 397 398 new_rule->power_rule.max_antenna_gain = 399 min_t(u32, rule1->power_rule.max_antenna_gain, 400 rule2->power_rule.max_antenna_gain); 401 402 new_rule->power_rule.max_eirp = min_t(u32, rule1->power_rule.max_eirp, 403 rule2->power_rule.max_eirp); 404 405 /* Use the flags of both the rules */ 406 new_rule->flags = rule1->flags | rule2->flags; 407 408 /* To be safe, lts use the max cac timeout of both rules */ 409 new_rule->dfs_cac_ms = max_t(u32, rule1->dfs_cac_ms, 410 rule2->dfs_cac_ms); 411 } 412 413 static struct ieee80211_regdomain * 414 ath11k_regd_intersect(struct ieee80211_regdomain *default_regd, 415 struct ieee80211_regdomain *curr_regd) 416 { 417 u8 num_old_regd_rules, num_curr_regd_rules, num_new_regd_rules; 418 struct ieee80211_reg_rule *old_rule, *curr_rule, *new_rule; 419 struct ieee80211_regdomain *new_regd = NULL; 420 u8 i, j, k; 421 422 num_old_regd_rules = default_regd->n_reg_rules; 423 num_curr_regd_rules = curr_regd->n_reg_rules; 424 num_new_regd_rules = 0; 425 426 /* Find the number of intersecting rules to allocate new regd memory */ 427 for (i = 0; i < num_old_regd_rules; i++) { 428 old_rule = default_regd->reg_rules + i; 429 for (j = 0; j < num_curr_regd_rules; j++) { 430 curr_rule = curr_regd->reg_rules + j; 431 432 if (ath11k_reg_can_intersect(old_rule, curr_rule)) 433 num_new_regd_rules++; 434 } 435 } 436 437 if (!num_new_regd_rules) 438 return NULL; 439 440 new_regd = kzalloc(sizeof(*new_regd) + (num_new_regd_rules * 441 sizeof(struct ieee80211_reg_rule)), 442 GFP_ATOMIC); 443 444 if (!new_regd) 445 return NULL; 446 447 /* We set the new country and dfs region directly and only trim 448 * the freq, power, antenna gain by intersecting with the 449 * default regdomain. Also MAX of the dfs cac timeout is selected. 450 */ 451 new_regd->n_reg_rules = num_new_regd_rules; 452 memcpy(new_regd->alpha2, curr_regd->alpha2, sizeof(new_regd->alpha2)); 453 new_regd->dfs_region = curr_regd->dfs_region; 454 new_rule = new_regd->reg_rules; 455 456 for (i = 0, k = 0; i < num_old_regd_rules; i++) { 457 old_rule = default_regd->reg_rules + i; 458 for (j = 0; j < num_curr_regd_rules; j++) { 459 curr_rule = curr_regd->reg_rules + j; 460 461 if (ath11k_reg_can_intersect(old_rule, curr_rule)) 462 ath11k_reg_intersect_rules(old_rule, curr_rule, 463 (new_rule + k++)); 464 } 465 } 466 return new_regd; 467 } 468 469 static const char * 470 ath11k_reg_get_regdom_str(enum nl80211_dfs_regions dfs_region) 471 { 472 switch (dfs_region) { 473 case NL80211_DFS_FCC: 474 return "FCC"; 475 case NL80211_DFS_ETSI: 476 return "ETSI"; 477 case NL80211_DFS_JP: 478 return "JP"; 479 default: 480 return "UNSET"; 481 } 482 } 483 484 static u16 485 ath11k_reg_adjust_bw(u16 start_freq, u16 end_freq, u16 max_bw) 486 { 487 u16 bw; 488 489 if (end_freq <= start_freq) 490 return 0; 491 492 bw = end_freq - start_freq; 493 bw = min_t(u16, bw, max_bw); 494 495 if (bw >= 80 && bw < 160) 496 bw = 80; 497 else if (bw >= 40 && bw < 80) 498 bw = 40; 499 else if (bw >= 20 && bw < 40) 500 bw = 20; 501 else 502 bw = 0; 503 504 return bw; 505 } 506 507 static void 508 ath11k_reg_update_rule(struct ieee80211_reg_rule *reg_rule, u32 start_freq, 509 u32 end_freq, u32 bw, u32 ant_gain, u32 reg_pwr, 510 u32 reg_flags) 511 { 512 reg_rule->freq_range.start_freq_khz = MHZ_TO_KHZ(start_freq); 513 reg_rule->freq_range.end_freq_khz = MHZ_TO_KHZ(end_freq); 514 reg_rule->freq_range.max_bandwidth_khz = MHZ_TO_KHZ(bw); 515 reg_rule->power_rule.max_antenna_gain = DBI_TO_MBI(ant_gain); 516 reg_rule->power_rule.max_eirp = DBM_TO_MBM(reg_pwr); 517 reg_rule->flags = reg_flags; 518 } 519 520 static void 521 ath11k_reg_update_weather_radar_band(struct ath11k_base *ab, 522 struct ieee80211_regdomain *regd, 523 struct cur_reg_rule *reg_rule, 524 u8 *rule_idx, u32 flags, u16 max_bw) 525 { 526 u32 start_freq; 527 u32 end_freq; 528 u16 bw; 529 u8 i; 530 531 i = *rule_idx; 532 533 /* there might be situations when even the input rule must be dropped */ 534 i--; 535 536 /* frequencies below weather radar */ 537 bw = ath11k_reg_adjust_bw(reg_rule->start_freq, 538 ETSI_WEATHER_RADAR_BAND_LOW, max_bw); 539 if (bw > 0) { 540 i++; 541 542 ath11k_reg_update_rule(regd->reg_rules + i, 543 reg_rule->start_freq, 544 ETSI_WEATHER_RADAR_BAND_LOW, bw, 545 reg_rule->ant_gain, reg_rule->reg_power, 546 flags); 547 548 ath11k_dbg(ab, ATH11K_DBG_REG, 549 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n", 550 i + 1, reg_rule->start_freq, 551 ETSI_WEATHER_RADAR_BAND_LOW, bw, reg_rule->ant_gain, 552 reg_rule->reg_power, regd->reg_rules[i].dfs_cac_ms, 553 flags); 554 } 555 556 /* weather radar frequencies */ 557 start_freq = max_t(u32, reg_rule->start_freq, 558 ETSI_WEATHER_RADAR_BAND_LOW); 559 end_freq = min_t(u32, reg_rule->end_freq, ETSI_WEATHER_RADAR_BAND_HIGH); 560 561 bw = ath11k_reg_adjust_bw(start_freq, end_freq, max_bw); 562 if (bw > 0) { 563 i++; 564 565 ath11k_reg_update_rule(regd->reg_rules + i, start_freq, 566 end_freq, bw, reg_rule->ant_gain, 567 reg_rule->reg_power, flags); 568 569 regd->reg_rules[i].dfs_cac_ms = ETSI_WEATHER_RADAR_BAND_CAC_TIMEOUT; 570 571 ath11k_dbg(ab, ATH11K_DBG_REG, 572 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n", 573 i + 1, start_freq, end_freq, bw, 574 reg_rule->ant_gain, reg_rule->reg_power, 575 regd->reg_rules[i].dfs_cac_ms, flags); 576 } 577 578 /* frequencies above weather radar */ 579 bw = ath11k_reg_adjust_bw(ETSI_WEATHER_RADAR_BAND_HIGH, 580 reg_rule->end_freq, max_bw); 581 if (bw > 0) { 582 i++; 583 584 ath11k_reg_update_rule(regd->reg_rules + i, 585 ETSI_WEATHER_RADAR_BAND_HIGH, 586 reg_rule->end_freq, bw, 587 reg_rule->ant_gain, reg_rule->reg_power, 588 flags); 589 590 ath11k_dbg(ab, ATH11K_DBG_REG, 591 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n", 592 i + 1, ETSI_WEATHER_RADAR_BAND_HIGH, 593 reg_rule->end_freq, bw, reg_rule->ant_gain, 594 reg_rule->reg_power, regd->reg_rules[i].dfs_cac_ms, 595 flags); 596 } 597 598 *rule_idx = i; 599 } 600 601 struct ieee80211_regdomain * 602 ath11k_reg_build_regd(struct ath11k_base *ab, 603 struct cur_regulatory_info *reg_info, bool intersect) 604 { 605 struct ieee80211_regdomain *tmp_regd, *default_regd, *new_regd = NULL; 606 struct cur_reg_rule *reg_rule; 607 u8 i = 0, j = 0; 608 u8 num_rules; 609 u16 max_bw; 610 u32 flags; 611 char alpha2[3]; 612 613 num_rules = reg_info->num_5g_reg_rules + reg_info->num_2g_reg_rules; 614 615 if (!num_rules) 616 goto ret; 617 618 /* Add max additional rules to accommodate weather radar band */ 619 if (reg_info->dfs_region == ATH11K_DFS_REG_ETSI) 620 num_rules += 2; 621 622 tmp_regd = kzalloc(sizeof(*tmp_regd) + 623 (num_rules * sizeof(struct ieee80211_reg_rule)), 624 GFP_ATOMIC); 625 if (!tmp_regd) 626 goto ret; 627 628 memcpy(tmp_regd->alpha2, reg_info->alpha2, REG_ALPHA2_LEN + 1); 629 memcpy(alpha2, reg_info->alpha2, REG_ALPHA2_LEN + 1); 630 alpha2[2] = '\0'; 631 tmp_regd->dfs_region = ath11k_map_fw_dfs_region(reg_info->dfs_region); 632 633 ath11k_dbg(ab, ATH11K_DBG_REG, 634 "\r\nCountry %s, CFG Regdomain %s FW Regdomain %d, num_reg_rules %d\n", 635 alpha2, ath11k_reg_get_regdom_str(tmp_regd->dfs_region), 636 reg_info->dfs_region, num_rules); 637 /* Update reg_rules[] below. Firmware is expected to 638 * send these rules in order(2G rules first and then 5G) 639 */ 640 for (; i < num_rules; i++) { 641 if (reg_info->num_2g_reg_rules && 642 (i < reg_info->num_2g_reg_rules)) { 643 reg_rule = reg_info->reg_rules_2g_ptr + i; 644 max_bw = min_t(u16, reg_rule->max_bw, 645 reg_info->max_bw_2g); 646 flags = 0; 647 } else if (reg_info->num_5g_reg_rules && 648 (j < reg_info->num_5g_reg_rules)) { 649 reg_rule = reg_info->reg_rules_5g_ptr + j++; 650 max_bw = min_t(u16, reg_rule->max_bw, 651 reg_info->max_bw_5g); 652 653 /* FW doesn't pass NL80211_RRF_AUTO_BW flag for 654 * BW Auto correction, we can enable this by default 655 * for all 5G rules here. The regulatory core performs 656 * BW correction if required and applies flags as 657 * per other BW rule flags we pass from here 658 */ 659 flags = NL80211_RRF_AUTO_BW; 660 } else { 661 break; 662 } 663 664 flags |= ath11k_map_fw_reg_flags(reg_rule->flags); 665 666 ath11k_reg_update_rule(tmp_regd->reg_rules + i, 667 reg_rule->start_freq, 668 reg_rule->end_freq, max_bw, 669 reg_rule->ant_gain, reg_rule->reg_power, 670 flags); 671 672 /* Update dfs cac timeout if the dfs domain is ETSI and the 673 * new rule covers weather radar band. 674 * Default value of '0' corresponds to 60s timeout, so no 675 * need to update that for other rules. 676 */ 677 if (flags & NL80211_RRF_DFS && 678 reg_info->dfs_region == ATH11K_DFS_REG_ETSI && 679 (reg_rule->end_freq > ETSI_WEATHER_RADAR_BAND_LOW && 680 reg_rule->start_freq < ETSI_WEATHER_RADAR_BAND_HIGH)){ 681 ath11k_reg_update_weather_radar_band(ab, tmp_regd, 682 reg_rule, &i, 683 flags, max_bw); 684 continue; 685 } 686 687 ath11k_dbg(ab, ATH11K_DBG_REG, 688 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n", 689 i + 1, reg_rule->start_freq, reg_rule->end_freq, 690 max_bw, reg_rule->ant_gain, reg_rule->reg_power, 691 tmp_regd->reg_rules[i].dfs_cac_ms, 692 flags); 693 } 694 695 tmp_regd->n_reg_rules = i; 696 697 if (intersect) { 698 default_regd = ab->default_regd[reg_info->phy_id]; 699 700 /* Get a new regd by intersecting the received regd with 701 * our default regd. 702 */ 703 new_regd = ath11k_regd_intersect(default_regd, tmp_regd); 704 kfree(tmp_regd); 705 if (!new_regd) { 706 ath11k_warn(ab, "Unable to create intersected regdomain\n"); 707 goto ret; 708 } 709 } else { 710 new_regd = tmp_regd; 711 } 712 713 ret: 714 return new_regd; 715 } 716 717 void ath11k_regd_update_work(struct work_struct *work) 718 { 719 struct ath11k *ar = container_of(work, struct ath11k, 720 regd_update_work); 721 int ret; 722 723 ret = ath11k_regd_update(ar); 724 if (ret) { 725 /* Firmware has already moved to the new regd. We need 726 * to maintain channel consistency across FW, Host driver 727 * and userspace. Hence as a fallback mechanism we can set 728 * the prev or default country code to the firmware. 729 */ 730 /* TODO: Implement Fallback Mechanism */ 731 } 732 } 733 734 void ath11k_reg_init(struct ath11k *ar) 735 { 736 ar->hw->wiphy->regulatory_flags = REGULATORY_WIPHY_SELF_MANAGED; 737 ar->hw->wiphy->reg_notifier = ath11k_reg_notifier; 738 } 739 740 void ath11k_reg_free(struct ath11k_base *ab) 741 { 742 int i; 743 744 for (i = 0; i < ab->hw_params.max_radios; i++) { 745 kfree(ab->default_regd[i]); 746 kfree(ab->new_regd[i]); 747 } 748 } 749