1 // SPDX-License-Identifier: BSD-3-Clause-Clear 2 /* 3 * Copyright (c) 2018-2019 The Linux Foundation. All rights reserved. 4 */ 5 #include "core.h" 6 #include "debug.h" 7 8 /* World regdom to be used in case default regd from fw is unavailable */ 9 #define ATH11K_2GHZ_CH01_11 REG_RULE(2412 - 10, 2462 + 10, 40, 0, 20, 0) 10 #define ATH11K_5GHZ_5150_5350 REG_RULE(5150 - 10, 5350 + 10, 80, 0, 30,\ 11 NL80211_RRF_NO_IR) 12 #define ATH11K_5GHZ_5725_5850 REG_RULE(5725 - 10, 5850 + 10, 80, 0, 30,\ 13 NL80211_RRF_NO_IR) 14 15 #define ETSI_WEATHER_RADAR_BAND_LOW 5590 16 #define ETSI_WEATHER_RADAR_BAND_HIGH 5650 17 #define ETSI_WEATHER_RADAR_BAND_CAC_TIMEOUT 600000 18 19 static const struct ieee80211_regdomain ath11k_world_regd = { 20 .n_reg_rules = 3, 21 .alpha2 = "00", 22 .reg_rules = { 23 ATH11K_2GHZ_CH01_11, 24 ATH11K_5GHZ_5150_5350, 25 ATH11K_5GHZ_5725_5850, 26 } 27 }; 28 29 static bool ath11k_regdom_changes(struct ath11k *ar, char *alpha2) 30 { 31 const struct ieee80211_regdomain *regd; 32 33 regd = rcu_dereference_rtnl(ar->hw->wiphy->regd); 34 /* This can happen during wiphy registration where the previous 35 * user request is received before we update the regd received 36 * from firmware. 37 */ 38 if (!regd) 39 return true; 40 41 return memcmp(regd->alpha2, alpha2, 2) != 0; 42 } 43 44 static void 45 ath11k_reg_notifier(struct wiphy *wiphy, struct regulatory_request *request) 46 { 47 struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy); 48 struct wmi_init_country_params init_country_param; 49 struct ath11k *ar = hw->priv; 50 int ret; 51 52 ath11k_dbg(ar->ab, ATH11K_DBG_REG, 53 "Regulatory Notification received for %s\n", wiphy_name(wiphy)); 54 55 /* Currently supporting only General User Hints. Cell base user 56 * hints to be handled later. 57 * Hints from other sources like Core, Beacons are not expected for 58 * self managed wiphy's 59 */ 60 if (!(request->initiator == NL80211_REGDOM_SET_BY_USER && 61 request->user_reg_hint_type == NL80211_USER_REG_HINT_USER)) { 62 ath11k_warn(ar->ab, "Unexpected Regulatory event for this wiphy\n"); 63 return; 64 } 65 66 if (!IS_ENABLED(CONFIG_ATH_REG_DYNAMIC_USER_REG_HINTS)) { 67 ath11k_dbg(ar->ab, ATH11K_DBG_REG, 68 "Country Setting is not allowed\n"); 69 return; 70 } 71 72 if (!ath11k_regdom_changes(ar, request->alpha2)) { 73 ath11k_dbg(ar->ab, ATH11K_DBG_REG, "Country is already set\n"); 74 return; 75 } 76 77 /* Set the country code to the firmware and wait for 78 * the WMI_REG_CHAN_LIST_CC EVENT for updating the 79 * reg info 80 */ 81 init_country_param.flags = ALPHA_IS_SET; 82 memcpy(&init_country_param.cc_info.alpha2, request->alpha2, 2); 83 84 ret = ath11k_wmi_send_init_country_cmd(ar, init_country_param); 85 if (ret) 86 ath11k_warn(ar->ab, 87 "INIT Country code set to fw failed : %d\n", ret); 88 } 89 90 int ath11k_reg_update_chan_list(struct ath11k *ar) 91 { 92 struct ieee80211_supported_band **bands; 93 struct scan_chan_list_params *params; 94 struct ieee80211_channel *channel; 95 struct ieee80211_hw *hw = ar->hw; 96 struct channel_param *ch; 97 enum nl80211_band band; 98 int num_channels = 0; 99 int params_len; 100 int i, ret; 101 102 bands = hw->wiphy->bands; 103 for (band = 0; band < NUM_NL80211_BANDS; band++) { 104 if (!bands[band]) 105 continue; 106 107 for (i = 0; i < bands[band]->n_channels; i++) { 108 if (bands[band]->channels[i].flags & 109 IEEE80211_CHAN_DISABLED) 110 continue; 111 112 num_channels++; 113 } 114 } 115 116 if (WARN_ON(!num_channels)) 117 return -EINVAL; 118 119 params_len = sizeof(struct scan_chan_list_params) + 120 num_channels * sizeof(struct channel_param); 121 params = kzalloc(params_len, GFP_KERNEL); 122 123 if (!params) 124 return -ENOMEM; 125 126 params->pdev_id = ar->pdev->pdev_id; 127 params->nallchans = num_channels; 128 129 ch = params->ch_param; 130 131 for (band = 0; band < NUM_NL80211_BANDS; band++) { 132 if (!bands[band]) 133 continue; 134 135 for (i = 0; i < bands[band]->n_channels; i++) { 136 channel = &bands[band]->channels[i]; 137 138 if (channel->flags & IEEE80211_CHAN_DISABLED) 139 continue; 140 141 /* TODO: Set to true/false based on some condition? */ 142 ch->allow_ht = true; 143 ch->allow_vht = true; 144 ch->allow_he = true; 145 146 ch->dfs_set = 147 !!(channel->flags & IEEE80211_CHAN_RADAR); 148 ch->is_chan_passive = !!(channel->flags & 149 IEEE80211_CHAN_NO_IR); 150 ch->is_chan_passive |= ch->dfs_set; 151 ch->mhz = channel->center_freq; 152 ch->cfreq1 = channel->center_freq; 153 ch->minpower = 0; 154 ch->maxpower = channel->max_power * 2; 155 ch->maxregpower = channel->max_reg_power * 2; 156 ch->antennamax = channel->max_antenna_gain * 2; 157 158 /* TODO: Use appropriate phymodes */ 159 if (channel->band == NL80211_BAND_2GHZ) 160 ch->phy_mode = MODE_11G; 161 else 162 ch->phy_mode = MODE_11A; 163 164 if (channel->band == NL80211_BAND_6GHZ && 165 cfg80211_channel_is_psc(channel)) 166 ch->psc_channel = true; 167 168 ath11k_dbg(ar->ab, ATH11K_DBG_WMI, 169 "mac channel [%d/%d] freq %d maxpower %d regpower %d antenna %d mode %d\n", 170 i, params->nallchans, 171 ch->mhz, ch->maxpower, ch->maxregpower, 172 ch->antennamax, ch->phy_mode); 173 174 ch++; 175 /* TODO: use quarrter/half rate, cfreq12, dfs_cfreq2 176 * set_agile, reg_class_idx 177 */ 178 } 179 } 180 181 ret = ath11k_wmi_send_scan_chan_list_cmd(ar, params); 182 kfree(params); 183 184 return ret; 185 } 186 187 static void ath11k_copy_regd(struct ieee80211_regdomain *regd_orig, 188 struct ieee80211_regdomain *regd_copy) 189 { 190 u8 i; 191 192 /* The caller should have checked error conditions */ 193 memcpy(regd_copy, regd_orig, sizeof(*regd_orig)); 194 195 for (i = 0; i < regd_orig->n_reg_rules; i++) 196 memcpy(®d_copy->reg_rules[i], ®d_orig->reg_rules[i], 197 sizeof(struct ieee80211_reg_rule)); 198 } 199 200 int ath11k_regd_update(struct ath11k *ar, bool init) 201 { 202 struct ieee80211_regdomain *regd, *regd_copy = NULL; 203 int ret, regd_len, pdev_id; 204 struct ath11k_base *ab; 205 206 ab = ar->ab; 207 pdev_id = ar->pdev_idx; 208 209 spin_lock(&ab->base_lock); 210 211 if (init) { 212 /* Apply the regd received during init through 213 * WMI_REG_CHAN_LIST_CC event. In case of failure to 214 * receive the regd, initialize with a default world 215 * regulatory. 216 */ 217 if (ab->default_regd[pdev_id]) { 218 regd = ab->default_regd[pdev_id]; 219 } else { 220 ath11k_warn(ab, 221 "failed to receive default regd during init\n"); 222 regd = (struct ieee80211_regdomain *)&ath11k_world_regd; 223 } 224 } else { 225 regd = ab->new_regd[pdev_id]; 226 } 227 228 if (!regd) { 229 ret = -EINVAL; 230 spin_unlock(&ab->base_lock); 231 goto err; 232 } 233 234 regd_len = sizeof(*regd) + (regd->n_reg_rules * 235 sizeof(struct ieee80211_reg_rule)); 236 237 regd_copy = kzalloc(regd_len, GFP_ATOMIC); 238 if (regd_copy) 239 ath11k_copy_regd(regd, regd_copy); 240 241 spin_unlock(&ab->base_lock); 242 243 if (!regd_copy) { 244 ret = -ENOMEM; 245 goto err; 246 } 247 248 rtnl_lock(); 249 ret = regulatory_set_wiphy_regd_sync_rtnl(ar->hw->wiphy, regd_copy); 250 rtnl_unlock(); 251 252 kfree(regd_copy); 253 254 if (ret) 255 goto err; 256 257 if (ar->state == ATH11K_STATE_ON) { 258 ret = ath11k_reg_update_chan_list(ar); 259 if (ret) 260 goto err; 261 } 262 263 return 0; 264 err: 265 ath11k_warn(ab, "failed to perform regd update : %d\n", ret); 266 return ret; 267 } 268 269 static enum nl80211_dfs_regions 270 ath11k_map_fw_dfs_region(enum ath11k_dfs_region dfs_region) 271 { 272 switch (dfs_region) { 273 case ATH11K_DFS_REG_FCC: 274 case ATH11K_DFS_REG_CN: 275 return NL80211_DFS_FCC; 276 case ATH11K_DFS_REG_ETSI: 277 case ATH11K_DFS_REG_KR: 278 return NL80211_DFS_ETSI; 279 case ATH11K_DFS_REG_MKK: 280 return NL80211_DFS_JP; 281 default: 282 return NL80211_DFS_UNSET; 283 } 284 } 285 286 static u32 ath11k_map_fw_reg_flags(u16 reg_flags) 287 { 288 u32 flags = 0; 289 290 if (reg_flags & REGULATORY_CHAN_NO_IR) 291 flags = NL80211_RRF_NO_IR; 292 293 if (reg_flags & REGULATORY_CHAN_RADAR) 294 flags |= NL80211_RRF_DFS; 295 296 if (reg_flags & REGULATORY_CHAN_NO_OFDM) 297 flags |= NL80211_RRF_NO_OFDM; 298 299 if (reg_flags & REGULATORY_CHAN_INDOOR_ONLY) 300 flags |= NL80211_RRF_NO_OUTDOOR; 301 302 if (reg_flags & REGULATORY_CHAN_NO_HT40) 303 flags |= NL80211_RRF_NO_HT40; 304 305 if (reg_flags & REGULATORY_CHAN_NO_80MHZ) 306 flags |= NL80211_RRF_NO_80MHZ; 307 308 if (reg_flags & REGULATORY_CHAN_NO_160MHZ) 309 flags |= NL80211_RRF_NO_160MHZ; 310 311 return flags; 312 } 313 314 static bool 315 ath11k_reg_can_intersect(struct ieee80211_reg_rule *rule1, 316 struct ieee80211_reg_rule *rule2) 317 { 318 u32 start_freq1, end_freq1; 319 u32 start_freq2, end_freq2; 320 321 start_freq1 = rule1->freq_range.start_freq_khz; 322 start_freq2 = rule2->freq_range.start_freq_khz; 323 324 end_freq1 = rule1->freq_range.end_freq_khz; 325 end_freq2 = rule2->freq_range.end_freq_khz; 326 327 if ((start_freq1 >= start_freq2 && 328 start_freq1 < end_freq2) || 329 (start_freq2 > start_freq1 && 330 start_freq2 < end_freq1)) 331 return true; 332 333 /* TODO: Should we restrict intersection feasibility 334 * based on min bandwidth of the intersected region also, 335 * say the intersected rule should have a min bandwidth 336 * of 20MHz? 337 */ 338 339 return false; 340 } 341 342 static void ath11k_reg_intersect_rules(struct ieee80211_reg_rule *rule1, 343 struct ieee80211_reg_rule *rule2, 344 struct ieee80211_reg_rule *new_rule) 345 { 346 u32 start_freq1, end_freq1; 347 u32 start_freq2, end_freq2; 348 u32 freq_diff, max_bw; 349 350 start_freq1 = rule1->freq_range.start_freq_khz; 351 start_freq2 = rule2->freq_range.start_freq_khz; 352 353 end_freq1 = rule1->freq_range.end_freq_khz; 354 end_freq2 = rule2->freq_range.end_freq_khz; 355 356 new_rule->freq_range.start_freq_khz = max_t(u32, start_freq1, 357 start_freq2); 358 new_rule->freq_range.end_freq_khz = min_t(u32, end_freq1, end_freq2); 359 360 freq_diff = new_rule->freq_range.end_freq_khz - 361 new_rule->freq_range.start_freq_khz; 362 max_bw = min_t(u32, rule1->freq_range.max_bandwidth_khz, 363 rule2->freq_range.max_bandwidth_khz); 364 new_rule->freq_range.max_bandwidth_khz = min_t(u32, max_bw, freq_diff); 365 366 new_rule->power_rule.max_antenna_gain = 367 min_t(u32, rule1->power_rule.max_antenna_gain, 368 rule2->power_rule.max_antenna_gain); 369 370 new_rule->power_rule.max_eirp = min_t(u32, rule1->power_rule.max_eirp, 371 rule2->power_rule.max_eirp); 372 373 /* Use the flags of both the rules */ 374 new_rule->flags = rule1->flags | rule2->flags; 375 376 /* To be safe, lts use the max cac timeout of both rules */ 377 new_rule->dfs_cac_ms = max_t(u32, rule1->dfs_cac_ms, 378 rule2->dfs_cac_ms); 379 } 380 381 static struct ieee80211_regdomain * 382 ath11k_regd_intersect(struct ieee80211_regdomain *default_regd, 383 struct ieee80211_regdomain *curr_regd) 384 { 385 u8 num_old_regd_rules, num_curr_regd_rules, num_new_regd_rules; 386 struct ieee80211_reg_rule *old_rule, *curr_rule, *new_rule; 387 struct ieee80211_regdomain *new_regd = NULL; 388 u8 i, j, k; 389 390 num_old_regd_rules = default_regd->n_reg_rules; 391 num_curr_regd_rules = curr_regd->n_reg_rules; 392 num_new_regd_rules = 0; 393 394 /* Find the number of intersecting rules to allocate new regd memory */ 395 for (i = 0; i < num_old_regd_rules; i++) { 396 old_rule = default_regd->reg_rules + i; 397 for (j = 0; j < num_curr_regd_rules; j++) { 398 curr_rule = curr_regd->reg_rules + j; 399 400 if (ath11k_reg_can_intersect(old_rule, curr_rule)) 401 num_new_regd_rules++; 402 } 403 } 404 405 if (!num_new_regd_rules) 406 return NULL; 407 408 new_regd = kzalloc(sizeof(*new_regd) + (num_new_regd_rules * 409 sizeof(struct ieee80211_reg_rule)), 410 GFP_ATOMIC); 411 412 if (!new_regd) 413 return NULL; 414 415 /* We set the new country and dfs region directly and only trim 416 * the freq, power, antenna gain by intersecting with the 417 * default regdomain. Also MAX of the dfs cac timeout is selected. 418 */ 419 new_regd->n_reg_rules = num_new_regd_rules; 420 memcpy(new_regd->alpha2, curr_regd->alpha2, sizeof(new_regd->alpha2)); 421 new_regd->dfs_region = curr_regd->dfs_region; 422 new_rule = new_regd->reg_rules; 423 424 for (i = 0, k = 0; i < num_old_regd_rules; i++) { 425 old_rule = default_regd->reg_rules + i; 426 for (j = 0; j < num_curr_regd_rules; j++) { 427 curr_rule = curr_regd->reg_rules + j; 428 429 if (ath11k_reg_can_intersect(old_rule, curr_rule)) 430 ath11k_reg_intersect_rules(old_rule, curr_rule, 431 (new_rule + k++)); 432 } 433 } 434 return new_regd; 435 } 436 437 static const char * 438 ath11k_reg_get_regdom_str(enum nl80211_dfs_regions dfs_region) 439 { 440 switch (dfs_region) { 441 case NL80211_DFS_FCC: 442 return "FCC"; 443 case NL80211_DFS_ETSI: 444 return "ETSI"; 445 case NL80211_DFS_JP: 446 return "JP"; 447 default: 448 return "UNSET"; 449 } 450 } 451 452 static u16 453 ath11k_reg_adjust_bw(u16 start_freq, u16 end_freq, u16 max_bw) 454 { 455 u16 bw; 456 457 bw = end_freq - start_freq; 458 bw = min_t(u16, bw, max_bw); 459 460 if (bw >= 80 && bw < 160) 461 bw = 80; 462 else if (bw >= 40 && bw < 80) 463 bw = 40; 464 else if (bw < 40) 465 bw = 20; 466 467 return bw; 468 } 469 470 static void 471 ath11k_reg_update_rule(struct ieee80211_reg_rule *reg_rule, u32 start_freq, 472 u32 end_freq, u32 bw, u32 ant_gain, u32 reg_pwr, 473 u32 reg_flags) 474 { 475 reg_rule->freq_range.start_freq_khz = MHZ_TO_KHZ(start_freq); 476 reg_rule->freq_range.end_freq_khz = MHZ_TO_KHZ(end_freq); 477 reg_rule->freq_range.max_bandwidth_khz = MHZ_TO_KHZ(bw); 478 reg_rule->power_rule.max_antenna_gain = DBI_TO_MBI(ant_gain); 479 reg_rule->power_rule.max_eirp = DBM_TO_MBM(reg_pwr); 480 reg_rule->flags = reg_flags; 481 } 482 483 static void 484 ath11k_reg_update_weather_radar_band(struct ath11k_base *ab, 485 struct ieee80211_regdomain *regd, 486 struct cur_reg_rule *reg_rule, 487 u8 *rule_idx, u32 flags, u16 max_bw) 488 { 489 u32 end_freq; 490 u16 bw; 491 u8 i; 492 493 i = *rule_idx; 494 495 bw = ath11k_reg_adjust_bw(reg_rule->start_freq, 496 ETSI_WEATHER_RADAR_BAND_LOW, max_bw); 497 498 ath11k_reg_update_rule(regd->reg_rules + i, reg_rule->start_freq, 499 ETSI_WEATHER_RADAR_BAND_LOW, bw, 500 reg_rule->ant_gain, reg_rule->reg_power, 501 flags); 502 503 ath11k_dbg(ab, ATH11K_DBG_REG, 504 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n", 505 i + 1, reg_rule->start_freq, ETSI_WEATHER_RADAR_BAND_LOW, 506 bw, reg_rule->ant_gain, reg_rule->reg_power, 507 regd->reg_rules[i].dfs_cac_ms, 508 flags); 509 510 if (reg_rule->end_freq > ETSI_WEATHER_RADAR_BAND_HIGH) 511 end_freq = ETSI_WEATHER_RADAR_BAND_HIGH; 512 else 513 end_freq = reg_rule->end_freq; 514 515 bw = ath11k_reg_adjust_bw(ETSI_WEATHER_RADAR_BAND_LOW, end_freq, 516 max_bw); 517 518 i++; 519 520 ath11k_reg_update_rule(regd->reg_rules + i, 521 ETSI_WEATHER_RADAR_BAND_LOW, end_freq, bw, 522 reg_rule->ant_gain, reg_rule->reg_power, 523 flags); 524 525 regd->reg_rules[i].dfs_cac_ms = ETSI_WEATHER_RADAR_BAND_CAC_TIMEOUT; 526 527 ath11k_dbg(ab, ATH11K_DBG_REG, 528 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n", 529 i + 1, ETSI_WEATHER_RADAR_BAND_LOW, end_freq, 530 bw, reg_rule->ant_gain, reg_rule->reg_power, 531 regd->reg_rules[i].dfs_cac_ms, 532 flags); 533 534 if (end_freq == reg_rule->end_freq) { 535 regd->n_reg_rules--; 536 *rule_idx = i; 537 return; 538 } 539 540 bw = ath11k_reg_adjust_bw(ETSI_WEATHER_RADAR_BAND_HIGH, 541 reg_rule->end_freq, max_bw); 542 543 i++; 544 545 ath11k_reg_update_rule(regd->reg_rules + i, ETSI_WEATHER_RADAR_BAND_HIGH, 546 reg_rule->end_freq, bw, 547 reg_rule->ant_gain, reg_rule->reg_power, 548 flags); 549 550 ath11k_dbg(ab, ATH11K_DBG_REG, 551 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n", 552 i + 1, ETSI_WEATHER_RADAR_BAND_HIGH, reg_rule->end_freq, 553 bw, reg_rule->ant_gain, reg_rule->reg_power, 554 regd->reg_rules[i].dfs_cac_ms, 555 flags); 556 557 *rule_idx = i; 558 } 559 560 struct ieee80211_regdomain * 561 ath11k_reg_build_regd(struct ath11k_base *ab, 562 struct cur_regulatory_info *reg_info, bool intersect) 563 { 564 struct ieee80211_regdomain *tmp_regd, *default_regd, *new_regd = NULL; 565 struct cur_reg_rule *reg_rule; 566 u8 i = 0, j = 0; 567 u8 num_rules; 568 u16 max_bw; 569 u32 flags; 570 char alpha2[3]; 571 572 num_rules = reg_info->num_5g_reg_rules + reg_info->num_2g_reg_rules; 573 574 if (!num_rules) 575 goto ret; 576 577 /* Add max additional rules to accommodate weather radar band */ 578 if (reg_info->dfs_region == ATH11K_DFS_REG_ETSI) 579 num_rules += 2; 580 581 tmp_regd = kzalloc(sizeof(*tmp_regd) + 582 (num_rules * sizeof(struct ieee80211_reg_rule)), 583 GFP_ATOMIC); 584 if (!tmp_regd) 585 goto ret; 586 587 tmp_regd->n_reg_rules = num_rules; 588 memcpy(tmp_regd->alpha2, reg_info->alpha2, REG_ALPHA2_LEN + 1); 589 memcpy(alpha2, reg_info->alpha2, REG_ALPHA2_LEN + 1); 590 alpha2[2] = '\0'; 591 tmp_regd->dfs_region = ath11k_map_fw_dfs_region(reg_info->dfs_region); 592 593 ath11k_dbg(ab, ATH11K_DBG_REG, 594 "\r\nCountry %s, CFG Regdomain %s FW Regdomain %d, num_reg_rules %d\n", 595 alpha2, ath11k_reg_get_regdom_str(tmp_regd->dfs_region), 596 reg_info->dfs_region, num_rules); 597 /* Update reg_rules[] below. Firmware is expected to 598 * send these rules in order(2G rules first and then 5G) 599 */ 600 for (; i < tmp_regd->n_reg_rules; i++) { 601 if (reg_info->num_2g_reg_rules && 602 (i < reg_info->num_2g_reg_rules)) { 603 reg_rule = reg_info->reg_rules_2g_ptr + i; 604 max_bw = min_t(u16, reg_rule->max_bw, 605 reg_info->max_bw_2g); 606 flags = 0; 607 } else if (reg_info->num_5g_reg_rules && 608 (j < reg_info->num_5g_reg_rules)) { 609 reg_rule = reg_info->reg_rules_5g_ptr + j++; 610 max_bw = min_t(u16, reg_rule->max_bw, 611 reg_info->max_bw_5g); 612 613 /* FW doesn't pass NL80211_RRF_AUTO_BW flag for 614 * BW Auto correction, we can enable this by default 615 * for all 5G rules here. The regulatory core performs 616 * BW correction if required and applies flags as 617 * per other BW rule flags we pass from here 618 */ 619 flags = NL80211_RRF_AUTO_BW; 620 } else { 621 break; 622 } 623 624 flags |= ath11k_map_fw_reg_flags(reg_rule->flags); 625 626 ath11k_reg_update_rule(tmp_regd->reg_rules + i, 627 reg_rule->start_freq, 628 reg_rule->end_freq, max_bw, 629 reg_rule->ant_gain, reg_rule->reg_power, 630 flags); 631 632 /* Update dfs cac timeout if the dfs domain is ETSI and the 633 * new rule covers weather radar band. 634 * Default value of '0' corresponds to 60s timeout, so no 635 * need to update that for other rules. 636 */ 637 if (flags & NL80211_RRF_DFS && 638 reg_info->dfs_region == ATH11K_DFS_REG_ETSI && 639 (reg_rule->end_freq > ETSI_WEATHER_RADAR_BAND_LOW && 640 reg_rule->start_freq < ETSI_WEATHER_RADAR_BAND_HIGH)){ 641 ath11k_reg_update_weather_radar_band(ab, tmp_regd, 642 reg_rule, &i, 643 flags, max_bw); 644 continue; 645 } 646 647 ath11k_dbg(ab, ATH11K_DBG_REG, 648 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n", 649 i + 1, reg_rule->start_freq, reg_rule->end_freq, 650 max_bw, reg_rule->ant_gain, reg_rule->reg_power, 651 tmp_regd->reg_rules[i].dfs_cac_ms, 652 flags); 653 } 654 655 if (intersect) { 656 default_regd = ab->default_regd[reg_info->phy_id]; 657 658 /* Get a new regd by intersecting the received regd with 659 * our default regd. 660 */ 661 new_regd = ath11k_regd_intersect(default_regd, tmp_regd); 662 kfree(tmp_regd); 663 if (!new_regd) { 664 ath11k_warn(ab, "Unable to create intersected regdomain\n"); 665 goto ret; 666 } 667 } else { 668 new_regd = tmp_regd; 669 } 670 671 ret: 672 return new_regd; 673 } 674 675 void ath11k_regd_update_work(struct work_struct *work) 676 { 677 struct ath11k *ar = container_of(work, struct ath11k, 678 regd_update_work); 679 int ret; 680 681 ret = ath11k_regd_update(ar, false); 682 if (ret) { 683 /* Firmware has already moved to the new regd. We need 684 * to maintain channel consistency across FW, Host driver 685 * and userspace. Hence as a fallback mechanism we can set 686 * the prev or default country code to the firmware. 687 */ 688 /* TODO: Implement Fallback Mechanism */ 689 } 690 } 691 692 void ath11k_reg_init(struct ath11k *ar) 693 { 694 ar->hw->wiphy->regulatory_flags = REGULATORY_WIPHY_SELF_MANAGED; 695 ar->hw->wiphy->reg_notifier = ath11k_reg_notifier; 696 } 697 698 void ath11k_reg_free(struct ath11k_base *ab) 699 { 700 int i; 701 702 for (i = 0; i < MAX_RADIOS; i++) { 703 kfree(ab->default_regd[i]); 704 kfree(ab->new_regd[i]); 705 } 706 } 707