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 wmi_set_current_country_params set_current_param = {}; 52 struct ath11k *ar = hw->priv; 53 int ret; 54 55 ath11k_dbg(ar->ab, ATH11K_DBG_REG, 56 "Regulatory Notification received for %s\n", wiphy_name(wiphy)); 57 58 /* Currently supporting only General User Hints. Cell base user 59 * hints to be handled later. 60 * Hints from other sources like Core, Beacons are not expected for 61 * self managed wiphy's 62 */ 63 if (!(request->initiator == NL80211_REGDOM_SET_BY_USER && 64 request->user_reg_hint_type == NL80211_USER_REG_HINT_USER)) { 65 ath11k_warn(ar->ab, "Unexpected Regulatory event for this wiphy\n"); 66 return; 67 } 68 69 if (!IS_ENABLED(CONFIG_ATH_REG_DYNAMIC_USER_REG_HINTS)) { 70 ath11k_dbg(ar->ab, ATH11K_DBG_REG, 71 "Country Setting is not allowed\n"); 72 return; 73 } 74 75 if (!ath11k_regdom_changes(ar, request->alpha2)) { 76 ath11k_dbg(ar->ab, ATH11K_DBG_REG, "Country is already set\n"); 77 return; 78 } 79 80 /* Set the country code to the firmware and will receive 81 * the WMI_REG_CHAN_LIST_CC EVENT for updating the 82 * reg info 83 */ 84 if (ar->ab->hw_params.current_cc_support) { 85 memcpy(&set_current_param.alpha2, request->alpha2, 2); 86 ret = ath11k_wmi_send_set_current_country_cmd(ar, &set_current_param); 87 if (ret) 88 ath11k_warn(ar->ab, 89 "failed set current country code: %d\n", ret); 90 } else { 91 init_country_param.flags = ALPHA_IS_SET; 92 memcpy(&init_country_param.cc_info.alpha2, request->alpha2, 2); 93 init_country_param.cc_info.alpha2[2] = 0; 94 95 ret = ath11k_wmi_send_init_country_cmd(ar, init_country_param); 96 if (ret) 97 ath11k_warn(ar->ab, 98 "INIT Country code set to fw failed : %d\n", ret); 99 } 100 101 ath11k_mac_11d_scan_stop(ar); 102 ar->regdom_set_by_user = true; 103 } 104 105 int ath11k_reg_update_chan_list(struct ath11k *ar) 106 { 107 struct ieee80211_supported_band **bands; 108 struct scan_chan_list_params *params; 109 struct ieee80211_channel *channel; 110 struct ieee80211_hw *hw = ar->hw; 111 struct channel_param *ch; 112 enum nl80211_band band; 113 int num_channels = 0; 114 int i, ret; 115 116 bands = hw->wiphy->bands; 117 for (band = 0; band < NUM_NL80211_BANDS; band++) { 118 if (!bands[band]) 119 continue; 120 121 for (i = 0; i < bands[band]->n_channels; i++) { 122 if (bands[band]->channels[i].flags & 123 IEEE80211_CHAN_DISABLED) 124 continue; 125 126 num_channels++; 127 } 128 } 129 130 if (WARN_ON(!num_channels)) 131 return -EINVAL; 132 133 params = kzalloc(struct_size(params, ch_param, num_channels), 134 GFP_KERNEL); 135 if (!params) 136 return -ENOMEM; 137 138 params->pdev_id = ar->pdev->pdev_id; 139 params->nallchans = num_channels; 140 141 ch = params->ch_param; 142 143 for (band = 0; band < NUM_NL80211_BANDS; band++) { 144 if (!bands[band]) 145 continue; 146 147 for (i = 0; i < bands[band]->n_channels; i++) { 148 channel = &bands[band]->channels[i]; 149 150 if (channel->flags & IEEE80211_CHAN_DISABLED) 151 continue; 152 153 /* TODO: Set to true/false based on some condition? */ 154 ch->allow_ht = true; 155 ch->allow_vht = true; 156 ch->allow_he = true; 157 158 ch->dfs_set = 159 !!(channel->flags & IEEE80211_CHAN_RADAR); 160 ch->is_chan_passive = !!(channel->flags & 161 IEEE80211_CHAN_NO_IR); 162 ch->is_chan_passive |= ch->dfs_set; 163 ch->mhz = channel->center_freq; 164 ch->cfreq1 = channel->center_freq; 165 ch->minpower = 0; 166 ch->maxpower = channel->max_power * 2; 167 ch->maxregpower = channel->max_reg_power * 2; 168 ch->antennamax = channel->max_antenna_gain * 2; 169 170 /* TODO: Use appropriate phymodes */ 171 if (channel->band == NL80211_BAND_2GHZ) 172 ch->phy_mode = MODE_11G; 173 else 174 ch->phy_mode = MODE_11A; 175 176 if (channel->band == NL80211_BAND_6GHZ && 177 cfg80211_channel_is_psc(channel)) 178 ch->psc_channel = true; 179 180 ath11k_dbg(ar->ab, ATH11K_DBG_WMI, 181 "mac channel [%d/%d] freq %d maxpower %d regpower %d antenna %d mode %d\n", 182 i, params->nallchans, 183 ch->mhz, ch->maxpower, ch->maxregpower, 184 ch->antennamax, ch->phy_mode); 185 186 ch++; 187 /* TODO: use quarrter/half rate, cfreq12, dfs_cfreq2 188 * set_agile, reg_class_idx 189 */ 190 } 191 } 192 193 ret = ath11k_wmi_send_scan_chan_list_cmd(ar, params); 194 kfree(params); 195 196 if (ar->pending_11d) { 197 complete(&ar->finish_11d_ch_list); 198 ar->pending_11d = false; 199 } 200 201 return ret; 202 } 203 204 static void ath11k_copy_regd(struct ieee80211_regdomain *regd_orig, 205 struct ieee80211_regdomain *regd_copy) 206 { 207 u8 i; 208 209 /* The caller should have checked error conditions */ 210 memcpy(regd_copy, regd_orig, sizeof(*regd_orig)); 211 212 for (i = 0; i < regd_orig->n_reg_rules; i++) 213 memcpy(®d_copy->reg_rules[i], ®d_orig->reg_rules[i], 214 sizeof(struct ieee80211_reg_rule)); 215 } 216 217 int ath11k_regd_update(struct ath11k *ar) 218 { 219 struct ieee80211_regdomain *regd, *regd_copy = NULL; 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 regd = (struct ieee80211_regdomain *)&ath11k_world_regd; 243 } 244 } 245 246 if (!regd) { 247 ret = -EINVAL; 248 spin_unlock_bh(&ab->base_lock); 249 goto err; 250 } 251 252 regd_len = sizeof(*regd) + (regd->n_reg_rules * 253 sizeof(struct ieee80211_reg_rule)); 254 255 regd_copy = kzalloc(regd_len, GFP_ATOMIC); 256 if (regd_copy) 257 ath11k_copy_regd(regd, regd_copy); 258 259 spin_unlock_bh(&ab->base_lock); 260 261 if (!regd_copy) { 262 ret = -ENOMEM; 263 goto err; 264 } 265 266 if (ar->pending_11d) 267 complete(&ar->finish_11d_scan); 268 269 rtnl_lock(); 270 wiphy_lock(ar->hw->wiphy); 271 272 if (ar->pending_11d) 273 reinit_completion(&ar->finish_11d_ch_list); 274 275 ret = regulatory_set_wiphy_regd_sync(ar->hw->wiphy, regd_copy); 276 wiphy_unlock(ar->hw->wiphy); 277 rtnl_unlock(); 278 279 kfree(regd_copy); 280 281 if (ret) 282 goto err; 283 284 if (ar->state == ATH11K_STATE_ON) { 285 ret = ath11k_reg_update_chan_list(ar); 286 if (ret) 287 goto err; 288 } 289 290 return 0; 291 err: 292 ath11k_warn(ab, "failed to perform regd update : %d\n", ret); 293 return ret; 294 } 295 296 static enum nl80211_dfs_regions 297 ath11k_map_fw_dfs_region(enum ath11k_dfs_region dfs_region) 298 { 299 switch (dfs_region) { 300 case ATH11K_DFS_REG_FCC: 301 case ATH11K_DFS_REG_CN: 302 return NL80211_DFS_FCC; 303 case ATH11K_DFS_REG_ETSI: 304 case ATH11K_DFS_REG_KR: 305 return NL80211_DFS_ETSI; 306 case ATH11K_DFS_REG_MKK: 307 case ATH11K_DFS_REG_MKK_N: 308 return NL80211_DFS_JP; 309 default: 310 return NL80211_DFS_UNSET; 311 } 312 } 313 314 static u32 ath11k_map_fw_reg_flags(u16 reg_flags) 315 { 316 u32 flags = 0; 317 318 if (reg_flags & REGULATORY_CHAN_NO_IR) 319 flags = NL80211_RRF_NO_IR; 320 321 if (reg_flags & REGULATORY_CHAN_RADAR) 322 flags |= NL80211_RRF_DFS; 323 324 if (reg_flags & REGULATORY_CHAN_NO_OFDM) 325 flags |= NL80211_RRF_NO_OFDM; 326 327 if (reg_flags & REGULATORY_CHAN_INDOOR_ONLY) 328 flags |= NL80211_RRF_NO_OUTDOOR; 329 330 if (reg_flags & REGULATORY_CHAN_NO_HT40) 331 flags |= NL80211_RRF_NO_HT40; 332 333 if (reg_flags & REGULATORY_CHAN_NO_80MHZ) 334 flags |= NL80211_RRF_NO_80MHZ; 335 336 if (reg_flags & REGULATORY_CHAN_NO_160MHZ) 337 flags |= NL80211_RRF_NO_160MHZ; 338 339 return flags; 340 } 341 342 static bool 343 ath11k_reg_can_intersect(struct ieee80211_reg_rule *rule1, 344 struct ieee80211_reg_rule *rule2) 345 { 346 u32 start_freq1, end_freq1; 347 u32 start_freq2, end_freq2; 348 349 start_freq1 = rule1->freq_range.start_freq_khz; 350 start_freq2 = rule2->freq_range.start_freq_khz; 351 352 end_freq1 = rule1->freq_range.end_freq_khz; 353 end_freq2 = rule2->freq_range.end_freq_khz; 354 355 if ((start_freq1 >= start_freq2 && 356 start_freq1 < end_freq2) || 357 (start_freq2 > start_freq1 && 358 start_freq2 < end_freq1)) 359 return true; 360 361 /* TODO: Should we restrict intersection feasibility 362 * based on min bandwidth of the intersected region also, 363 * say the intersected rule should have a min bandwidth 364 * of 20MHz? 365 */ 366 367 return false; 368 } 369 370 static void ath11k_reg_intersect_rules(struct ieee80211_reg_rule *rule1, 371 struct ieee80211_reg_rule *rule2, 372 struct ieee80211_reg_rule *new_rule) 373 { 374 u32 start_freq1, end_freq1; 375 u32 start_freq2, end_freq2; 376 u32 freq_diff, max_bw; 377 378 start_freq1 = rule1->freq_range.start_freq_khz; 379 start_freq2 = rule2->freq_range.start_freq_khz; 380 381 end_freq1 = rule1->freq_range.end_freq_khz; 382 end_freq2 = rule2->freq_range.end_freq_khz; 383 384 new_rule->freq_range.start_freq_khz = max_t(u32, start_freq1, 385 start_freq2); 386 new_rule->freq_range.end_freq_khz = min_t(u32, end_freq1, end_freq2); 387 388 freq_diff = new_rule->freq_range.end_freq_khz - 389 new_rule->freq_range.start_freq_khz; 390 max_bw = min_t(u32, rule1->freq_range.max_bandwidth_khz, 391 rule2->freq_range.max_bandwidth_khz); 392 new_rule->freq_range.max_bandwidth_khz = min_t(u32, max_bw, freq_diff); 393 394 new_rule->power_rule.max_antenna_gain = 395 min_t(u32, rule1->power_rule.max_antenna_gain, 396 rule2->power_rule.max_antenna_gain); 397 398 new_rule->power_rule.max_eirp = min_t(u32, rule1->power_rule.max_eirp, 399 rule2->power_rule.max_eirp); 400 401 /* Use the flags of both the rules */ 402 new_rule->flags = rule1->flags | rule2->flags; 403 404 /* To be safe, lts use the max cac timeout of both rules */ 405 new_rule->dfs_cac_ms = max_t(u32, rule1->dfs_cac_ms, 406 rule2->dfs_cac_ms); 407 } 408 409 static struct ieee80211_regdomain * 410 ath11k_regd_intersect(struct ieee80211_regdomain *default_regd, 411 struct ieee80211_regdomain *curr_regd) 412 { 413 u8 num_old_regd_rules, num_curr_regd_rules, num_new_regd_rules; 414 struct ieee80211_reg_rule *old_rule, *curr_rule, *new_rule; 415 struct ieee80211_regdomain *new_regd = NULL; 416 u8 i, j, k; 417 418 num_old_regd_rules = default_regd->n_reg_rules; 419 num_curr_regd_rules = curr_regd->n_reg_rules; 420 num_new_regd_rules = 0; 421 422 /* Find the number of intersecting rules to allocate new regd memory */ 423 for (i = 0; i < num_old_regd_rules; i++) { 424 old_rule = default_regd->reg_rules + i; 425 for (j = 0; j < num_curr_regd_rules; j++) { 426 curr_rule = curr_regd->reg_rules + j; 427 428 if (ath11k_reg_can_intersect(old_rule, curr_rule)) 429 num_new_regd_rules++; 430 } 431 } 432 433 if (!num_new_regd_rules) 434 return NULL; 435 436 new_regd = kzalloc(sizeof(*new_regd) + (num_new_regd_rules * 437 sizeof(struct ieee80211_reg_rule)), 438 GFP_ATOMIC); 439 440 if (!new_regd) 441 return NULL; 442 443 /* We set the new country and dfs region directly and only trim 444 * the freq, power, antenna gain by intersecting with the 445 * default regdomain. Also MAX of the dfs cac timeout is selected. 446 */ 447 new_regd->n_reg_rules = num_new_regd_rules; 448 memcpy(new_regd->alpha2, curr_regd->alpha2, sizeof(new_regd->alpha2)); 449 new_regd->dfs_region = curr_regd->dfs_region; 450 new_rule = new_regd->reg_rules; 451 452 for (i = 0, k = 0; i < num_old_regd_rules; i++) { 453 old_rule = default_regd->reg_rules + i; 454 for (j = 0; j < num_curr_regd_rules; j++) { 455 curr_rule = curr_regd->reg_rules + j; 456 457 if (ath11k_reg_can_intersect(old_rule, curr_rule)) 458 ath11k_reg_intersect_rules(old_rule, curr_rule, 459 (new_rule + k++)); 460 } 461 } 462 return new_regd; 463 } 464 465 static const char * 466 ath11k_reg_get_regdom_str(enum nl80211_dfs_regions dfs_region) 467 { 468 switch (dfs_region) { 469 case NL80211_DFS_FCC: 470 return "FCC"; 471 case NL80211_DFS_ETSI: 472 return "ETSI"; 473 case NL80211_DFS_JP: 474 return "JP"; 475 default: 476 return "UNSET"; 477 } 478 } 479 480 static u16 481 ath11k_reg_adjust_bw(u16 start_freq, u16 end_freq, u16 max_bw) 482 { 483 u16 bw; 484 485 if (end_freq <= start_freq) 486 return 0; 487 488 bw = end_freq - start_freq; 489 bw = min_t(u16, bw, max_bw); 490 491 if (bw >= 80 && bw < 160) 492 bw = 80; 493 else if (bw >= 40 && bw < 80) 494 bw = 40; 495 else if (bw >= 20 && bw < 40) 496 bw = 20; 497 else 498 bw = 0; 499 500 return bw; 501 } 502 503 static void 504 ath11k_reg_update_rule(struct ieee80211_reg_rule *reg_rule, u32 start_freq, 505 u32 end_freq, u32 bw, u32 ant_gain, u32 reg_pwr, 506 u32 reg_flags) 507 { 508 reg_rule->freq_range.start_freq_khz = MHZ_TO_KHZ(start_freq); 509 reg_rule->freq_range.end_freq_khz = MHZ_TO_KHZ(end_freq); 510 reg_rule->freq_range.max_bandwidth_khz = MHZ_TO_KHZ(bw); 511 reg_rule->power_rule.max_antenna_gain = DBI_TO_MBI(ant_gain); 512 reg_rule->power_rule.max_eirp = DBM_TO_MBM(reg_pwr); 513 reg_rule->flags = reg_flags; 514 } 515 516 static void 517 ath11k_reg_update_weather_radar_band(struct ath11k_base *ab, 518 struct ieee80211_regdomain *regd, 519 struct cur_reg_rule *reg_rule, 520 u8 *rule_idx, u32 flags, u16 max_bw) 521 { 522 u32 start_freq; 523 u32 end_freq; 524 u16 bw; 525 u8 i; 526 527 i = *rule_idx; 528 529 /* there might be situations when even the input rule must be dropped */ 530 i--; 531 532 /* frequencies below weather radar */ 533 bw = ath11k_reg_adjust_bw(reg_rule->start_freq, 534 ETSI_WEATHER_RADAR_BAND_LOW, max_bw); 535 if (bw > 0) { 536 i++; 537 538 ath11k_reg_update_rule(regd->reg_rules + i, 539 reg_rule->start_freq, 540 ETSI_WEATHER_RADAR_BAND_LOW, bw, 541 reg_rule->ant_gain, reg_rule->reg_power, 542 flags); 543 544 ath11k_dbg(ab, ATH11K_DBG_REG, 545 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n", 546 i + 1, reg_rule->start_freq, 547 ETSI_WEATHER_RADAR_BAND_LOW, bw, reg_rule->ant_gain, 548 reg_rule->reg_power, regd->reg_rules[i].dfs_cac_ms, 549 flags); 550 } 551 552 /* weather radar frequencies */ 553 start_freq = max_t(u32, reg_rule->start_freq, 554 ETSI_WEATHER_RADAR_BAND_LOW); 555 end_freq = min_t(u32, reg_rule->end_freq, ETSI_WEATHER_RADAR_BAND_HIGH); 556 557 bw = ath11k_reg_adjust_bw(start_freq, end_freq, max_bw); 558 if (bw > 0) { 559 i++; 560 561 ath11k_reg_update_rule(regd->reg_rules + i, start_freq, 562 end_freq, bw, reg_rule->ant_gain, 563 reg_rule->reg_power, flags); 564 565 regd->reg_rules[i].dfs_cac_ms = ETSI_WEATHER_RADAR_BAND_CAC_TIMEOUT; 566 567 ath11k_dbg(ab, ATH11K_DBG_REG, 568 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n", 569 i + 1, start_freq, end_freq, bw, 570 reg_rule->ant_gain, reg_rule->reg_power, 571 regd->reg_rules[i].dfs_cac_ms, flags); 572 } 573 574 /* frequencies above weather radar */ 575 bw = ath11k_reg_adjust_bw(ETSI_WEATHER_RADAR_BAND_HIGH, 576 reg_rule->end_freq, max_bw); 577 if (bw > 0) { 578 i++; 579 580 ath11k_reg_update_rule(regd->reg_rules + i, 581 ETSI_WEATHER_RADAR_BAND_HIGH, 582 reg_rule->end_freq, bw, 583 reg_rule->ant_gain, reg_rule->reg_power, 584 flags); 585 586 ath11k_dbg(ab, ATH11K_DBG_REG, 587 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n", 588 i + 1, ETSI_WEATHER_RADAR_BAND_HIGH, 589 reg_rule->end_freq, bw, reg_rule->ant_gain, 590 reg_rule->reg_power, regd->reg_rules[i].dfs_cac_ms, 591 flags); 592 } 593 594 *rule_idx = i; 595 } 596 597 struct ieee80211_regdomain * 598 ath11k_reg_build_regd(struct ath11k_base *ab, 599 struct cur_regulatory_info *reg_info, bool intersect) 600 { 601 struct ieee80211_regdomain *tmp_regd, *default_regd, *new_regd = NULL; 602 struct cur_reg_rule *reg_rule; 603 u8 i = 0, j = 0; 604 u8 num_rules; 605 u16 max_bw; 606 u32 flags; 607 char alpha2[3]; 608 609 num_rules = reg_info->num_5g_reg_rules + reg_info->num_2g_reg_rules; 610 611 if (!num_rules) 612 goto ret; 613 614 /* Add max additional rules to accommodate weather radar band */ 615 if (reg_info->dfs_region == ATH11K_DFS_REG_ETSI) 616 num_rules += 2; 617 618 tmp_regd = kzalloc(sizeof(*tmp_regd) + 619 (num_rules * sizeof(struct ieee80211_reg_rule)), 620 GFP_ATOMIC); 621 if (!tmp_regd) 622 goto ret; 623 624 memcpy(tmp_regd->alpha2, reg_info->alpha2, REG_ALPHA2_LEN + 1); 625 memcpy(alpha2, reg_info->alpha2, REG_ALPHA2_LEN + 1); 626 alpha2[2] = '\0'; 627 tmp_regd->dfs_region = ath11k_map_fw_dfs_region(reg_info->dfs_region); 628 629 ath11k_dbg(ab, ATH11K_DBG_REG, 630 "\r\nCountry %s, CFG Regdomain %s FW Regdomain %d, num_reg_rules %d\n", 631 alpha2, ath11k_reg_get_regdom_str(tmp_regd->dfs_region), 632 reg_info->dfs_region, num_rules); 633 /* Update reg_rules[] below. Firmware is expected to 634 * send these rules in order(2G rules first and then 5G) 635 */ 636 for (; i < num_rules; i++) { 637 if (reg_info->num_2g_reg_rules && 638 (i < reg_info->num_2g_reg_rules)) { 639 reg_rule = reg_info->reg_rules_2g_ptr + i; 640 max_bw = min_t(u16, reg_rule->max_bw, 641 reg_info->max_bw_2g); 642 flags = 0; 643 } else if (reg_info->num_5g_reg_rules && 644 (j < reg_info->num_5g_reg_rules)) { 645 reg_rule = reg_info->reg_rules_5g_ptr + j++; 646 max_bw = min_t(u16, reg_rule->max_bw, 647 reg_info->max_bw_5g); 648 649 /* FW doesn't pass NL80211_RRF_AUTO_BW flag for 650 * BW Auto correction, we can enable this by default 651 * for all 5G rules here. The regulatory core performs 652 * BW correction if required and applies flags as 653 * per other BW rule flags we pass from here 654 */ 655 flags = NL80211_RRF_AUTO_BW; 656 } else { 657 break; 658 } 659 660 flags |= ath11k_map_fw_reg_flags(reg_rule->flags); 661 662 ath11k_reg_update_rule(tmp_regd->reg_rules + i, 663 reg_rule->start_freq, 664 reg_rule->end_freq, max_bw, 665 reg_rule->ant_gain, reg_rule->reg_power, 666 flags); 667 668 /* Update dfs cac timeout if the dfs domain is ETSI and the 669 * new rule covers weather radar band. 670 * Default value of '0' corresponds to 60s timeout, so no 671 * need to update that for other rules. 672 */ 673 if (flags & NL80211_RRF_DFS && 674 reg_info->dfs_region == ATH11K_DFS_REG_ETSI && 675 (reg_rule->end_freq > ETSI_WEATHER_RADAR_BAND_LOW && 676 reg_rule->start_freq < ETSI_WEATHER_RADAR_BAND_HIGH)){ 677 ath11k_reg_update_weather_radar_band(ab, tmp_regd, 678 reg_rule, &i, 679 flags, max_bw); 680 continue; 681 } 682 683 ath11k_dbg(ab, ATH11K_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 tmp_regd->n_reg_rules = i; 692 693 if (intersect) { 694 default_regd = ab->default_regd[reg_info->phy_id]; 695 696 /* Get a new regd by intersecting the received regd with 697 * our default regd. 698 */ 699 new_regd = ath11k_regd_intersect(default_regd, tmp_regd); 700 kfree(tmp_regd); 701 if (!new_regd) { 702 ath11k_warn(ab, "Unable to create intersected regdomain\n"); 703 goto ret; 704 } 705 } else { 706 new_regd = tmp_regd; 707 } 708 709 ret: 710 return new_regd; 711 } 712 713 void ath11k_regd_update_work(struct work_struct *work) 714 { 715 struct ath11k *ar = container_of(work, struct ath11k, 716 regd_update_work); 717 int ret; 718 719 ret = ath11k_regd_update(ar); 720 if (ret) { 721 /* Firmware has already moved to the new regd. We need 722 * to maintain channel consistency across FW, Host driver 723 * and userspace. Hence as a fallback mechanism we can set 724 * the prev or default country code to the firmware. 725 */ 726 /* TODO: Implement Fallback Mechanism */ 727 } 728 } 729 730 void ath11k_reg_init(struct ath11k *ar) 731 { 732 ar->hw->wiphy->regulatory_flags = REGULATORY_WIPHY_SELF_MANAGED; 733 ar->hw->wiphy->reg_notifier = ath11k_reg_notifier; 734 } 735 736 void ath11k_reg_free(struct ath11k_base *ab) 737 { 738 int i; 739 740 for (i = 0; i < ab->hw_params.max_radios; i++) { 741 kfree(ab->default_regd[i]); 742 kfree(ab->new_regd[i]); 743 } 744 } 745