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 static void ath11k_copy_regd(struct ieee80211_regdomain *regd_orig, 196 struct ieee80211_regdomain *regd_copy) 197 { 198 u8 i; 199 200 /* The caller should have checked error conditions */ 201 memcpy(regd_copy, regd_orig, sizeof(*regd_orig)); 202 203 for (i = 0; i < regd_orig->n_reg_rules; i++) 204 memcpy(®d_copy->reg_rules[i], ®d_orig->reg_rules[i], 205 sizeof(struct ieee80211_reg_rule)); 206 } 207 208 int ath11k_regd_update(struct ath11k *ar) 209 { 210 struct ieee80211_regdomain *regd, *regd_copy = NULL; 211 int ret, regd_len, pdev_id; 212 struct ath11k_base *ab; 213 214 ab = ar->ab; 215 pdev_id = ar->pdev_idx; 216 217 spin_lock_bh(&ab->base_lock); 218 219 /* Prefer the latest regd update over default if it's available */ 220 if (ab->new_regd[pdev_id]) { 221 regd = ab->new_regd[pdev_id]; 222 } else { 223 /* Apply the regd received during init through 224 * WMI_REG_CHAN_LIST_CC event. In case of failure to 225 * receive the regd, initialize with a default world 226 * regulatory. 227 */ 228 if (ab->default_regd[pdev_id]) { 229 regd = ab->default_regd[pdev_id]; 230 } else { 231 ath11k_warn(ab, 232 "failed to receive default regd during init\n"); 233 regd = (struct ieee80211_regdomain *)&ath11k_world_regd; 234 } 235 } 236 237 if (!regd) { 238 ret = -EINVAL; 239 spin_unlock_bh(&ab->base_lock); 240 goto err; 241 } 242 243 regd_len = sizeof(*regd) + (regd->n_reg_rules * 244 sizeof(struct ieee80211_reg_rule)); 245 246 regd_copy = kzalloc(regd_len, GFP_ATOMIC); 247 if (regd_copy) 248 ath11k_copy_regd(regd, regd_copy); 249 250 spin_unlock_bh(&ab->base_lock); 251 252 if (!regd_copy) { 253 ret = -ENOMEM; 254 goto err; 255 } 256 257 if (ar->pending_11d) 258 complete(&ar->finish_11d_scan); 259 260 rtnl_lock(); 261 wiphy_lock(ar->hw->wiphy); 262 263 if (ar->pending_11d) 264 reinit_completion(&ar->finish_11d_ch_list); 265 266 ret = regulatory_set_wiphy_regd_sync(ar->hw->wiphy, regd_copy); 267 wiphy_unlock(ar->hw->wiphy); 268 rtnl_unlock(); 269 270 kfree(regd_copy); 271 272 if (ret) 273 goto err; 274 275 if (ar->state == ATH11K_STATE_ON) { 276 ret = ath11k_reg_update_chan_list(ar); 277 if (ret) 278 goto err; 279 } 280 281 return 0; 282 err: 283 ath11k_warn(ab, "failed to perform regd update : %d\n", ret); 284 return ret; 285 } 286 287 static enum nl80211_dfs_regions 288 ath11k_map_fw_dfs_region(enum ath11k_dfs_region dfs_region) 289 { 290 switch (dfs_region) { 291 case ATH11K_DFS_REG_FCC: 292 case ATH11K_DFS_REG_CN: 293 return NL80211_DFS_FCC; 294 case ATH11K_DFS_REG_ETSI: 295 case ATH11K_DFS_REG_KR: 296 return NL80211_DFS_ETSI; 297 case ATH11K_DFS_REG_MKK: 298 case ATH11K_DFS_REG_MKK_N: 299 return NL80211_DFS_JP; 300 default: 301 return NL80211_DFS_UNSET; 302 } 303 } 304 305 static u32 ath11k_map_fw_reg_flags(u16 reg_flags) 306 { 307 u32 flags = 0; 308 309 if (reg_flags & REGULATORY_CHAN_NO_IR) 310 flags = NL80211_RRF_NO_IR; 311 312 if (reg_flags & REGULATORY_CHAN_RADAR) 313 flags |= NL80211_RRF_DFS; 314 315 if (reg_flags & REGULATORY_CHAN_NO_OFDM) 316 flags |= NL80211_RRF_NO_OFDM; 317 318 if (reg_flags & REGULATORY_CHAN_INDOOR_ONLY) 319 flags |= NL80211_RRF_NO_OUTDOOR; 320 321 if (reg_flags & REGULATORY_CHAN_NO_HT40) 322 flags |= NL80211_RRF_NO_HT40; 323 324 if (reg_flags & REGULATORY_CHAN_NO_80MHZ) 325 flags |= NL80211_RRF_NO_80MHZ; 326 327 if (reg_flags & REGULATORY_CHAN_NO_160MHZ) 328 flags |= NL80211_RRF_NO_160MHZ; 329 330 return flags; 331 } 332 333 static bool 334 ath11k_reg_can_intersect(struct ieee80211_reg_rule *rule1, 335 struct ieee80211_reg_rule *rule2) 336 { 337 u32 start_freq1, end_freq1; 338 u32 start_freq2, end_freq2; 339 340 start_freq1 = rule1->freq_range.start_freq_khz; 341 start_freq2 = rule2->freq_range.start_freq_khz; 342 343 end_freq1 = rule1->freq_range.end_freq_khz; 344 end_freq2 = rule2->freq_range.end_freq_khz; 345 346 if ((start_freq1 >= start_freq2 && 347 start_freq1 < end_freq2) || 348 (start_freq2 > start_freq1 && 349 start_freq2 < end_freq1)) 350 return true; 351 352 /* TODO: Should we restrict intersection feasibility 353 * based on min bandwidth of the intersected region also, 354 * say the intersected rule should have a min bandwidth 355 * of 20MHz? 356 */ 357 358 return false; 359 } 360 361 static void ath11k_reg_intersect_rules(struct ieee80211_reg_rule *rule1, 362 struct ieee80211_reg_rule *rule2, 363 struct ieee80211_reg_rule *new_rule) 364 { 365 u32 start_freq1, end_freq1; 366 u32 start_freq2, end_freq2; 367 u32 freq_diff, max_bw; 368 369 start_freq1 = rule1->freq_range.start_freq_khz; 370 start_freq2 = rule2->freq_range.start_freq_khz; 371 372 end_freq1 = rule1->freq_range.end_freq_khz; 373 end_freq2 = rule2->freq_range.end_freq_khz; 374 375 new_rule->freq_range.start_freq_khz = max_t(u32, start_freq1, 376 start_freq2); 377 new_rule->freq_range.end_freq_khz = min_t(u32, end_freq1, end_freq2); 378 379 freq_diff = new_rule->freq_range.end_freq_khz - 380 new_rule->freq_range.start_freq_khz; 381 max_bw = min_t(u32, rule1->freq_range.max_bandwidth_khz, 382 rule2->freq_range.max_bandwidth_khz); 383 new_rule->freq_range.max_bandwidth_khz = min_t(u32, max_bw, freq_diff); 384 385 new_rule->power_rule.max_antenna_gain = 386 min_t(u32, rule1->power_rule.max_antenna_gain, 387 rule2->power_rule.max_antenna_gain); 388 389 new_rule->power_rule.max_eirp = min_t(u32, rule1->power_rule.max_eirp, 390 rule2->power_rule.max_eirp); 391 392 /* Use the flags of both the rules */ 393 new_rule->flags = rule1->flags | rule2->flags; 394 395 /* To be safe, lts use the max cac timeout of both rules */ 396 new_rule->dfs_cac_ms = max_t(u32, rule1->dfs_cac_ms, 397 rule2->dfs_cac_ms); 398 } 399 400 static struct ieee80211_regdomain * 401 ath11k_regd_intersect(struct ieee80211_regdomain *default_regd, 402 struct ieee80211_regdomain *curr_regd) 403 { 404 u8 num_old_regd_rules, num_curr_regd_rules, num_new_regd_rules; 405 struct ieee80211_reg_rule *old_rule, *curr_rule, *new_rule; 406 struct ieee80211_regdomain *new_regd = NULL; 407 u8 i, j, k; 408 409 num_old_regd_rules = default_regd->n_reg_rules; 410 num_curr_regd_rules = curr_regd->n_reg_rules; 411 num_new_regd_rules = 0; 412 413 /* Find the number of intersecting rules to allocate new regd memory */ 414 for (i = 0; i < num_old_regd_rules; i++) { 415 old_rule = default_regd->reg_rules + i; 416 for (j = 0; j < num_curr_regd_rules; j++) { 417 curr_rule = curr_regd->reg_rules + j; 418 419 if (ath11k_reg_can_intersect(old_rule, curr_rule)) 420 num_new_regd_rules++; 421 } 422 } 423 424 if (!num_new_regd_rules) 425 return NULL; 426 427 new_regd = kzalloc(sizeof(*new_regd) + (num_new_regd_rules * 428 sizeof(struct ieee80211_reg_rule)), 429 GFP_ATOMIC); 430 431 if (!new_regd) 432 return NULL; 433 434 /* We set the new country and dfs region directly and only trim 435 * the freq, power, antenna gain by intersecting with the 436 * default regdomain. Also MAX of the dfs cac timeout is selected. 437 */ 438 new_regd->n_reg_rules = num_new_regd_rules; 439 memcpy(new_regd->alpha2, curr_regd->alpha2, sizeof(new_regd->alpha2)); 440 new_regd->dfs_region = curr_regd->dfs_region; 441 new_rule = new_regd->reg_rules; 442 443 for (i = 0, k = 0; i < num_old_regd_rules; i++) { 444 old_rule = default_regd->reg_rules + i; 445 for (j = 0; j < num_curr_regd_rules; j++) { 446 curr_rule = curr_regd->reg_rules + j; 447 448 if (ath11k_reg_can_intersect(old_rule, curr_rule)) 449 ath11k_reg_intersect_rules(old_rule, curr_rule, 450 (new_rule + k++)); 451 } 452 } 453 return new_regd; 454 } 455 456 static const char * 457 ath11k_reg_get_regdom_str(enum nl80211_dfs_regions dfs_region) 458 { 459 switch (dfs_region) { 460 case NL80211_DFS_FCC: 461 return "FCC"; 462 case NL80211_DFS_ETSI: 463 return "ETSI"; 464 case NL80211_DFS_JP: 465 return "JP"; 466 default: 467 return "UNSET"; 468 } 469 } 470 471 static u16 472 ath11k_reg_adjust_bw(u16 start_freq, u16 end_freq, u16 max_bw) 473 { 474 u16 bw; 475 476 if (end_freq <= start_freq) 477 return 0; 478 479 bw = end_freq - start_freq; 480 bw = min_t(u16, bw, max_bw); 481 482 if (bw >= 80 && bw < 160) 483 bw = 80; 484 else if (bw >= 40 && bw < 80) 485 bw = 40; 486 else if (bw >= 20 && bw < 40) 487 bw = 20; 488 else 489 bw = 0; 490 491 return bw; 492 } 493 494 static void 495 ath11k_reg_update_rule(struct ieee80211_reg_rule *reg_rule, u32 start_freq, 496 u32 end_freq, u32 bw, u32 ant_gain, u32 reg_pwr, 497 u32 reg_flags) 498 { 499 reg_rule->freq_range.start_freq_khz = MHZ_TO_KHZ(start_freq); 500 reg_rule->freq_range.end_freq_khz = MHZ_TO_KHZ(end_freq); 501 reg_rule->freq_range.max_bandwidth_khz = MHZ_TO_KHZ(bw); 502 reg_rule->power_rule.max_antenna_gain = DBI_TO_MBI(ant_gain); 503 reg_rule->power_rule.max_eirp = DBM_TO_MBM(reg_pwr); 504 reg_rule->flags = reg_flags; 505 } 506 507 static void 508 ath11k_reg_update_weather_radar_band(struct ath11k_base *ab, 509 struct ieee80211_regdomain *regd, 510 struct cur_reg_rule *reg_rule, 511 u8 *rule_idx, u32 flags, u16 max_bw) 512 { 513 u32 start_freq; 514 u32 end_freq; 515 u16 bw; 516 u8 i; 517 518 i = *rule_idx; 519 520 /* there might be situations when even the input rule must be dropped */ 521 i--; 522 523 /* frequencies below weather radar */ 524 bw = ath11k_reg_adjust_bw(reg_rule->start_freq, 525 ETSI_WEATHER_RADAR_BAND_LOW, max_bw); 526 if (bw > 0) { 527 i++; 528 529 ath11k_reg_update_rule(regd->reg_rules + i, 530 reg_rule->start_freq, 531 ETSI_WEATHER_RADAR_BAND_LOW, bw, 532 reg_rule->ant_gain, reg_rule->reg_power, 533 flags); 534 535 ath11k_dbg(ab, ATH11K_DBG_REG, 536 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n", 537 i + 1, reg_rule->start_freq, 538 ETSI_WEATHER_RADAR_BAND_LOW, bw, reg_rule->ant_gain, 539 reg_rule->reg_power, regd->reg_rules[i].dfs_cac_ms, 540 flags); 541 } 542 543 /* weather radar frequencies */ 544 start_freq = max_t(u32, reg_rule->start_freq, 545 ETSI_WEATHER_RADAR_BAND_LOW); 546 end_freq = min_t(u32, reg_rule->end_freq, ETSI_WEATHER_RADAR_BAND_HIGH); 547 548 bw = ath11k_reg_adjust_bw(start_freq, end_freq, max_bw); 549 if (bw > 0) { 550 i++; 551 552 ath11k_reg_update_rule(regd->reg_rules + i, start_freq, 553 end_freq, bw, reg_rule->ant_gain, 554 reg_rule->reg_power, flags); 555 556 regd->reg_rules[i].dfs_cac_ms = ETSI_WEATHER_RADAR_BAND_CAC_TIMEOUT; 557 558 ath11k_dbg(ab, ATH11K_DBG_REG, 559 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n", 560 i + 1, start_freq, end_freq, bw, 561 reg_rule->ant_gain, reg_rule->reg_power, 562 regd->reg_rules[i].dfs_cac_ms, flags); 563 } 564 565 /* frequencies above weather radar */ 566 bw = ath11k_reg_adjust_bw(ETSI_WEATHER_RADAR_BAND_HIGH, 567 reg_rule->end_freq, max_bw); 568 if (bw > 0) { 569 i++; 570 571 ath11k_reg_update_rule(regd->reg_rules + i, 572 ETSI_WEATHER_RADAR_BAND_HIGH, 573 reg_rule->end_freq, bw, 574 reg_rule->ant_gain, reg_rule->reg_power, 575 flags); 576 577 ath11k_dbg(ab, ATH11K_DBG_REG, 578 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n", 579 i + 1, ETSI_WEATHER_RADAR_BAND_HIGH, 580 reg_rule->end_freq, bw, reg_rule->ant_gain, 581 reg_rule->reg_power, regd->reg_rules[i].dfs_cac_ms, 582 flags); 583 } 584 585 *rule_idx = i; 586 } 587 588 struct ieee80211_regdomain * 589 ath11k_reg_build_regd(struct ath11k_base *ab, 590 struct cur_regulatory_info *reg_info, bool intersect) 591 { 592 struct ieee80211_regdomain *tmp_regd, *default_regd, *new_regd = NULL; 593 struct cur_reg_rule *reg_rule; 594 u8 i = 0, j = 0; 595 u8 num_rules; 596 u16 max_bw; 597 u32 flags; 598 char alpha2[3]; 599 600 num_rules = reg_info->num_5g_reg_rules + reg_info->num_2g_reg_rules; 601 602 if (!num_rules) 603 goto ret; 604 605 /* Add max additional rules to accommodate weather radar band */ 606 if (reg_info->dfs_region == ATH11K_DFS_REG_ETSI) 607 num_rules += 2; 608 609 tmp_regd = kzalloc(sizeof(*tmp_regd) + 610 (num_rules * sizeof(struct ieee80211_reg_rule)), 611 GFP_ATOMIC); 612 if (!tmp_regd) 613 goto ret; 614 615 memcpy(tmp_regd->alpha2, reg_info->alpha2, REG_ALPHA2_LEN + 1); 616 memcpy(alpha2, reg_info->alpha2, REG_ALPHA2_LEN + 1); 617 alpha2[2] = '\0'; 618 tmp_regd->dfs_region = ath11k_map_fw_dfs_region(reg_info->dfs_region); 619 620 ath11k_dbg(ab, ATH11K_DBG_REG, 621 "\r\nCountry %s, CFG Regdomain %s FW Regdomain %d, num_reg_rules %d\n", 622 alpha2, ath11k_reg_get_regdom_str(tmp_regd->dfs_region), 623 reg_info->dfs_region, num_rules); 624 /* Update reg_rules[] below. Firmware is expected to 625 * send these rules in order(2G rules first and then 5G) 626 */ 627 for (; i < num_rules; i++) { 628 if (reg_info->num_2g_reg_rules && 629 (i < reg_info->num_2g_reg_rules)) { 630 reg_rule = reg_info->reg_rules_2g_ptr + i; 631 max_bw = min_t(u16, reg_rule->max_bw, 632 reg_info->max_bw_2g); 633 flags = 0; 634 } else if (reg_info->num_5g_reg_rules && 635 (j < reg_info->num_5g_reg_rules)) { 636 reg_rule = reg_info->reg_rules_5g_ptr + j++; 637 max_bw = min_t(u16, reg_rule->max_bw, 638 reg_info->max_bw_5g); 639 640 /* FW doesn't pass NL80211_RRF_AUTO_BW flag for 641 * BW Auto correction, we can enable this by default 642 * for all 5G rules here. The regulatory core performs 643 * BW correction if required and applies flags as 644 * per other BW rule flags we pass from here 645 */ 646 flags = NL80211_RRF_AUTO_BW; 647 } else { 648 break; 649 } 650 651 flags |= ath11k_map_fw_reg_flags(reg_rule->flags); 652 653 ath11k_reg_update_rule(tmp_regd->reg_rules + i, 654 reg_rule->start_freq, 655 reg_rule->end_freq, max_bw, 656 reg_rule->ant_gain, reg_rule->reg_power, 657 flags); 658 659 /* Update dfs cac timeout if the dfs domain is ETSI and the 660 * new rule covers weather radar band. 661 * Default value of '0' corresponds to 60s timeout, so no 662 * need to update that for other rules. 663 */ 664 if (flags & NL80211_RRF_DFS && 665 reg_info->dfs_region == ATH11K_DFS_REG_ETSI && 666 (reg_rule->end_freq > ETSI_WEATHER_RADAR_BAND_LOW && 667 reg_rule->start_freq < ETSI_WEATHER_RADAR_BAND_HIGH)){ 668 ath11k_reg_update_weather_radar_band(ab, tmp_regd, 669 reg_rule, &i, 670 flags, max_bw); 671 continue; 672 } 673 674 ath11k_dbg(ab, ATH11K_DBG_REG, 675 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n", 676 i + 1, reg_rule->start_freq, reg_rule->end_freq, 677 max_bw, reg_rule->ant_gain, reg_rule->reg_power, 678 tmp_regd->reg_rules[i].dfs_cac_ms, 679 flags); 680 } 681 682 tmp_regd->n_reg_rules = i; 683 684 if (intersect) { 685 default_regd = ab->default_regd[reg_info->phy_id]; 686 687 /* Get a new regd by intersecting the received regd with 688 * our default regd. 689 */ 690 new_regd = ath11k_regd_intersect(default_regd, tmp_regd); 691 kfree(tmp_regd); 692 if (!new_regd) { 693 ath11k_warn(ab, "Unable to create intersected regdomain\n"); 694 goto ret; 695 } 696 } else { 697 new_regd = tmp_regd; 698 } 699 700 ret: 701 return new_regd; 702 } 703 704 void ath11k_regd_update_work(struct work_struct *work) 705 { 706 struct ath11k *ar = container_of(work, struct ath11k, 707 regd_update_work); 708 int ret; 709 710 ret = ath11k_regd_update(ar); 711 if (ret) { 712 /* Firmware has already moved to the new regd. We need 713 * to maintain channel consistency across FW, Host driver 714 * and userspace. Hence as a fallback mechanism we can set 715 * the prev or default country code to the firmware. 716 */ 717 /* TODO: Implement Fallback Mechanism */ 718 } 719 } 720 721 void ath11k_reg_init(struct ath11k *ar) 722 { 723 ar->hw->wiphy->regulatory_flags = REGULATORY_WIPHY_SELF_MANAGED; 724 ar->hw->wiphy->reg_notifier = ath11k_reg_notifier; 725 } 726 727 void ath11k_reg_free(struct ath11k_base *ab) 728 { 729 int i; 730 731 for (i = 0; i < ab->hw_params.max_radios; i++) { 732 kfree(ab->default_regd[i]); 733 kfree(ab->new_regd[i]); 734 } 735 } 736