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 ath11k_dbg(ar->ab, ATH11K_DBG_WMI, 165 "mac channel [%d/%d] freq %d maxpower %d regpower %d antenna %d mode %d\n", 166 i, params->nallchans, 167 ch->mhz, ch->maxpower, ch->maxregpower, 168 ch->antennamax, ch->phy_mode); 169 170 ch++; 171 /* TODO: use quarrter/half rate, cfreq12, dfs_cfreq2 172 * set_agile, reg_class_idx 173 */ 174 } 175 } 176 177 ret = ath11k_wmi_send_scan_chan_list_cmd(ar, params); 178 kfree(params); 179 180 return ret; 181 } 182 183 static void ath11k_copy_regd(struct ieee80211_regdomain *regd_orig, 184 struct ieee80211_regdomain *regd_copy) 185 { 186 u8 i; 187 188 /* The caller should have checked error conditions */ 189 memcpy(regd_copy, regd_orig, sizeof(*regd_orig)); 190 191 for (i = 0; i < regd_orig->n_reg_rules; i++) 192 memcpy(®d_copy->reg_rules[i], ®d_orig->reg_rules[i], 193 sizeof(struct ieee80211_reg_rule)); 194 } 195 196 int ath11k_regd_update(struct ath11k *ar, bool init) 197 { 198 struct ieee80211_regdomain *regd, *regd_copy = NULL; 199 int ret, regd_len, pdev_id; 200 struct ath11k_base *ab; 201 202 ab = ar->ab; 203 pdev_id = ar->pdev_idx; 204 205 spin_lock(&ab->base_lock); 206 207 if (init) { 208 /* Apply the regd received during init through 209 * WMI_REG_CHAN_LIST_CC event. In case of failure to 210 * receive the regd, initialize with a default world 211 * regulatory. 212 */ 213 if (ab->default_regd[pdev_id]) { 214 regd = ab->default_regd[pdev_id]; 215 } else { 216 ath11k_warn(ab, 217 "failed to receive default regd during init\n"); 218 regd = (struct ieee80211_regdomain *)&ath11k_world_regd; 219 } 220 } else { 221 regd = ab->new_regd[pdev_id]; 222 } 223 224 if (!regd) { 225 ret = -EINVAL; 226 spin_unlock(&ab->base_lock); 227 goto err; 228 } 229 230 regd_len = sizeof(*regd) + (regd->n_reg_rules * 231 sizeof(struct ieee80211_reg_rule)); 232 233 regd_copy = kzalloc(regd_len, GFP_ATOMIC); 234 if (regd_copy) 235 ath11k_copy_regd(regd, regd_copy); 236 237 spin_unlock(&ab->base_lock); 238 239 if (!regd_copy) { 240 ret = -ENOMEM; 241 goto err; 242 } 243 244 rtnl_lock(); 245 ret = regulatory_set_wiphy_regd_sync_rtnl(ar->hw->wiphy, regd_copy); 246 rtnl_unlock(); 247 248 kfree(regd_copy); 249 250 if (ret) 251 goto err; 252 253 if (ar->state == ATH11K_STATE_ON) { 254 ret = ath11k_reg_update_chan_list(ar); 255 if (ret) 256 goto err; 257 } 258 259 return 0; 260 err: 261 ath11k_warn(ab, "failed to perform regd update : %d\n", ret); 262 return ret; 263 } 264 265 static enum nl80211_dfs_regions 266 ath11k_map_fw_dfs_region(enum ath11k_dfs_region dfs_region) 267 { 268 switch (dfs_region) { 269 case ATH11K_DFS_REG_FCC: 270 case ATH11K_DFS_REG_CN: 271 return NL80211_DFS_FCC; 272 case ATH11K_DFS_REG_ETSI: 273 case ATH11K_DFS_REG_KR: 274 return NL80211_DFS_ETSI; 275 case ATH11K_DFS_REG_MKK: 276 return NL80211_DFS_JP; 277 default: 278 return NL80211_DFS_UNSET; 279 } 280 } 281 282 static u32 ath11k_map_fw_reg_flags(u16 reg_flags) 283 { 284 u32 flags = 0; 285 286 if (reg_flags & REGULATORY_CHAN_NO_IR) 287 flags = NL80211_RRF_NO_IR; 288 289 if (reg_flags & REGULATORY_CHAN_RADAR) 290 flags |= NL80211_RRF_DFS; 291 292 if (reg_flags & REGULATORY_CHAN_NO_OFDM) 293 flags |= NL80211_RRF_NO_OFDM; 294 295 if (reg_flags & REGULATORY_CHAN_INDOOR_ONLY) 296 flags |= NL80211_RRF_NO_OUTDOOR; 297 298 if (reg_flags & REGULATORY_CHAN_NO_HT40) 299 flags |= NL80211_RRF_NO_HT40; 300 301 if (reg_flags & REGULATORY_CHAN_NO_80MHZ) 302 flags |= NL80211_RRF_NO_80MHZ; 303 304 if (reg_flags & REGULATORY_CHAN_NO_160MHZ) 305 flags |= NL80211_RRF_NO_160MHZ; 306 307 return flags; 308 } 309 310 static bool 311 ath11k_reg_can_intersect(struct ieee80211_reg_rule *rule1, 312 struct ieee80211_reg_rule *rule2) 313 { 314 u32 start_freq1, end_freq1; 315 u32 start_freq2, end_freq2; 316 317 start_freq1 = rule1->freq_range.start_freq_khz; 318 start_freq2 = rule2->freq_range.start_freq_khz; 319 320 end_freq1 = rule1->freq_range.end_freq_khz; 321 end_freq2 = rule2->freq_range.end_freq_khz; 322 323 if ((start_freq1 >= start_freq2 && 324 start_freq1 < end_freq2) || 325 (start_freq2 > start_freq1 && 326 start_freq2 < end_freq1)) 327 return true; 328 329 /* TODO: Should we restrict intersection feasibility 330 * based on min bandwidth of the intersected region also, 331 * say the intersected rule should have a min bandwidth 332 * of 20MHz? 333 */ 334 335 return false; 336 } 337 338 static void ath11k_reg_intersect_rules(struct ieee80211_reg_rule *rule1, 339 struct ieee80211_reg_rule *rule2, 340 struct ieee80211_reg_rule *new_rule) 341 { 342 u32 start_freq1, end_freq1; 343 u32 start_freq2, end_freq2; 344 u32 freq_diff, max_bw; 345 346 start_freq1 = rule1->freq_range.start_freq_khz; 347 start_freq2 = rule2->freq_range.start_freq_khz; 348 349 end_freq1 = rule1->freq_range.end_freq_khz; 350 end_freq2 = rule2->freq_range.end_freq_khz; 351 352 new_rule->freq_range.start_freq_khz = max_t(u32, start_freq1, 353 start_freq2); 354 new_rule->freq_range.end_freq_khz = min_t(u32, end_freq1, end_freq2); 355 356 freq_diff = new_rule->freq_range.end_freq_khz - 357 new_rule->freq_range.start_freq_khz; 358 max_bw = min_t(u32, rule1->freq_range.max_bandwidth_khz, 359 rule2->freq_range.max_bandwidth_khz); 360 new_rule->freq_range.max_bandwidth_khz = min_t(u32, max_bw, freq_diff); 361 362 new_rule->power_rule.max_antenna_gain = 363 min_t(u32, rule1->power_rule.max_antenna_gain, 364 rule2->power_rule.max_antenna_gain); 365 366 new_rule->power_rule.max_eirp = min_t(u32, rule1->power_rule.max_eirp, 367 rule2->power_rule.max_eirp); 368 369 /* Use the flags of both the rules */ 370 new_rule->flags = rule1->flags | rule2->flags; 371 372 /* To be safe, lts use the max cac timeout of both rules */ 373 new_rule->dfs_cac_ms = max_t(u32, rule1->dfs_cac_ms, 374 rule2->dfs_cac_ms); 375 } 376 377 static struct ieee80211_regdomain * 378 ath11k_regd_intersect(struct ieee80211_regdomain *default_regd, 379 struct ieee80211_regdomain *curr_regd) 380 { 381 u8 num_old_regd_rules, num_curr_regd_rules, num_new_regd_rules; 382 struct ieee80211_reg_rule *old_rule, *curr_rule, *new_rule; 383 struct ieee80211_regdomain *new_regd = NULL; 384 u8 i, j, k; 385 386 num_old_regd_rules = default_regd->n_reg_rules; 387 num_curr_regd_rules = curr_regd->n_reg_rules; 388 num_new_regd_rules = 0; 389 390 /* Find the number of intersecting rules to allocate new regd memory */ 391 for (i = 0; i < num_old_regd_rules; i++) { 392 old_rule = default_regd->reg_rules + i; 393 for (j = 0; j < num_curr_regd_rules; j++) { 394 curr_rule = curr_regd->reg_rules + j; 395 396 if (ath11k_reg_can_intersect(old_rule, curr_rule)) 397 num_new_regd_rules++; 398 } 399 } 400 401 if (!num_new_regd_rules) 402 return NULL; 403 404 new_regd = kzalloc(sizeof(*new_regd) + (num_new_regd_rules * 405 sizeof(struct ieee80211_reg_rule)), 406 GFP_ATOMIC); 407 408 if (!new_regd) 409 return NULL; 410 411 /* We set the new country and dfs region directly and only trim 412 * the freq, power, antenna gain by intersecting with the 413 * default regdomain. Also MAX of the dfs cac timeout is selected. 414 */ 415 new_regd->n_reg_rules = num_new_regd_rules; 416 memcpy(new_regd->alpha2, curr_regd->alpha2, sizeof(new_regd->alpha2)); 417 new_regd->dfs_region = curr_regd->dfs_region; 418 new_rule = new_regd->reg_rules; 419 420 for (i = 0, k = 0; i < num_old_regd_rules; i++) { 421 old_rule = default_regd->reg_rules + i; 422 for (j = 0; j < num_curr_regd_rules; j++) { 423 curr_rule = curr_regd->reg_rules + j; 424 425 if (ath11k_reg_can_intersect(old_rule, curr_rule)) 426 ath11k_reg_intersect_rules(old_rule, curr_rule, 427 (new_rule + k++)); 428 } 429 } 430 return new_regd; 431 } 432 433 static const char * 434 ath11k_reg_get_regdom_str(enum nl80211_dfs_regions dfs_region) 435 { 436 switch (dfs_region) { 437 case NL80211_DFS_FCC: 438 return "FCC"; 439 case NL80211_DFS_ETSI: 440 return "ETSI"; 441 case NL80211_DFS_JP: 442 return "JP"; 443 default: 444 return "UNSET"; 445 } 446 } 447 448 static u16 449 ath11k_reg_adjust_bw(u16 start_freq, u16 end_freq, u16 max_bw) 450 { 451 u16 bw; 452 453 bw = end_freq - start_freq; 454 bw = min_t(u16, bw, max_bw); 455 456 if (bw >= 80 && bw < 160) 457 bw = 80; 458 else if (bw >= 40 && bw < 80) 459 bw = 40; 460 else if (bw < 40) 461 bw = 20; 462 463 return bw; 464 } 465 466 static void 467 ath11k_reg_update_rule(struct ieee80211_reg_rule *reg_rule, u32 start_freq, 468 u32 end_freq, u32 bw, u32 ant_gain, u32 reg_pwr, 469 u32 reg_flags) 470 { 471 reg_rule->freq_range.start_freq_khz = MHZ_TO_KHZ(start_freq); 472 reg_rule->freq_range.end_freq_khz = MHZ_TO_KHZ(end_freq); 473 reg_rule->freq_range.max_bandwidth_khz = MHZ_TO_KHZ(bw); 474 reg_rule->power_rule.max_antenna_gain = DBI_TO_MBI(ant_gain); 475 reg_rule->power_rule.max_eirp = DBM_TO_MBM(reg_pwr); 476 reg_rule->flags = reg_flags; 477 } 478 479 static void 480 ath11k_reg_update_weather_radar_band(struct ath11k_base *ab, 481 struct ieee80211_regdomain *regd, 482 struct cur_reg_rule *reg_rule, 483 u8 *rule_idx, u32 flags, u16 max_bw) 484 { 485 u32 end_freq; 486 u16 bw; 487 u8 i; 488 489 i = *rule_idx; 490 491 bw = ath11k_reg_adjust_bw(reg_rule->start_freq, 492 ETSI_WEATHER_RADAR_BAND_LOW, max_bw); 493 494 ath11k_reg_update_rule(regd->reg_rules + i, reg_rule->start_freq, 495 ETSI_WEATHER_RADAR_BAND_LOW, bw, 496 reg_rule->ant_gain, reg_rule->reg_power, 497 flags); 498 499 ath11k_dbg(ab, ATH11K_DBG_REG, 500 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n", 501 i + 1, reg_rule->start_freq, ETSI_WEATHER_RADAR_BAND_LOW, 502 bw, reg_rule->ant_gain, reg_rule->reg_power, 503 regd->reg_rules[i].dfs_cac_ms, 504 flags); 505 506 if (reg_rule->end_freq > ETSI_WEATHER_RADAR_BAND_HIGH) 507 end_freq = ETSI_WEATHER_RADAR_BAND_HIGH; 508 else 509 end_freq = reg_rule->end_freq; 510 511 bw = ath11k_reg_adjust_bw(ETSI_WEATHER_RADAR_BAND_LOW, end_freq, 512 max_bw); 513 514 i++; 515 516 ath11k_reg_update_rule(regd->reg_rules + i, 517 ETSI_WEATHER_RADAR_BAND_LOW, end_freq, bw, 518 reg_rule->ant_gain, reg_rule->reg_power, 519 flags); 520 521 regd->reg_rules[i].dfs_cac_ms = ETSI_WEATHER_RADAR_BAND_CAC_TIMEOUT; 522 523 ath11k_dbg(ab, ATH11K_DBG_REG, 524 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n", 525 i + 1, ETSI_WEATHER_RADAR_BAND_LOW, end_freq, 526 bw, reg_rule->ant_gain, reg_rule->reg_power, 527 regd->reg_rules[i].dfs_cac_ms, 528 flags); 529 530 if (end_freq == reg_rule->end_freq) { 531 regd->n_reg_rules--; 532 *rule_idx = i; 533 return; 534 } 535 536 bw = ath11k_reg_adjust_bw(ETSI_WEATHER_RADAR_BAND_HIGH, 537 reg_rule->end_freq, max_bw); 538 539 i++; 540 541 ath11k_reg_update_rule(regd->reg_rules + i, ETSI_WEATHER_RADAR_BAND_HIGH, 542 reg_rule->end_freq, bw, 543 reg_rule->ant_gain, reg_rule->reg_power, 544 flags); 545 546 ath11k_dbg(ab, ATH11K_DBG_REG, 547 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n", 548 i + 1, ETSI_WEATHER_RADAR_BAND_HIGH, reg_rule->end_freq, 549 bw, reg_rule->ant_gain, reg_rule->reg_power, 550 regd->reg_rules[i].dfs_cac_ms, 551 flags); 552 553 *rule_idx = i; 554 } 555 556 struct ieee80211_regdomain * 557 ath11k_reg_build_regd(struct ath11k_base *ab, 558 struct cur_regulatory_info *reg_info, bool intersect) 559 { 560 struct ieee80211_regdomain *tmp_regd, *default_regd, *new_regd = NULL; 561 struct cur_reg_rule *reg_rule; 562 u8 i = 0, j = 0; 563 u8 num_rules; 564 u16 max_bw; 565 u32 flags; 566 char alpha2[3]; 567 568 num_rules = reg_info->num_5g_reg_rules + reg_info->num_2g_reg_rules; 569 570 if (!num_rules) 571 goto ret; 572 573 /* Add max additional rules to accommodate weather radar band */ 574 if (reg_info->dfs_region == ATH11K_DFS_REG_ETSI) 575 num_rules += 2; 576 577 tmp_regd = kzalloc(sizeof(*tmp_regd) + 578 (num_rules * sizeof(struct ieee80211_reg_rule)), 579 GFP_ATOMIC); 580 if (!tmp_regd) 581 goto ret; 582 583 tmp_regd->n_reg_rules = num_rules; 584 memcpy(tmp_regd->alpha2, reg_info->alpha2, REG_ALPHA2_LEN + 1); 585 memcpy(alpha2, reg_info->alpha2, REG_ALPHA2_LEN + 1); 586 alpha2[2] = '\0'; 587 tmp_regd->dfs_region = ath11k_map_fw_dfs_region(reg_info->dfs_region); 588 589 ath11k_dbg(ab, ATH11K_DBG_REG, 590 "\r\nCountry %s, CFG Regdomain %s FW Regdomain %d, num_reg_rules %d\n", 591 alpha2, ath11k_reg_get_regdom_str(tmp_regd->dfs_region), 592 reg_info->dfs_region, num_rules); 593 /* Update reg_rules[] below. Firmware is expected to 594 * send these rules in order(2G rules first and then 5G) 595 */ 596 for (; i < tmp_regd->n_reg_rules; i++) { 597 if (reg_info->num_2g_reg_rules && 598 (i < reg_info->num_2g_reg_rules)) { 599 reg_rule = reg_info->reg_rules_2g_ptr + i; 600 max_bw = min_t(u16, reg_rule->max_bw, 601 reg_info->max_bw_2g); 602 flags = 0; 603 } else if (reg_info->num_5g_reg_rules && 604 (j < reg_info->num_5g_reg_rules)) { 605 reg_rule = reg_info->reg_rules_5g_ptr + j++; 606 max_bw = min_t(u16, reg_rule->max_bw, 607 reg_info->max_bw_5g); 608 609 /* FW doesn't pass NL80211_RRF_AUTO_BW flag for 610 * BW Auto correction, we can enable this by default 611 * for all 5G rules here. The regulatory core performs 612 * BW correction if required and applies flags as 613 * per other BW rule flags we pass from here 614 */ 615 flags = NL80211_RRF_AUTO_BW; 616 } else { 617 break; 618 } 619 620 flags |= ath11k_map_fw_reg_flags(reg_rule->flags); 621 622 ath11k_reg_update_rule(tmp_regd->reg_rules + i, 623 reg_rule->start_freq, 624 reg_rule->end_freq, max_bw, 625 reg_rule->ant_gain, reg_rule->reg_power, 626 flags); 627 628 /* Update dfs cac timeout if the dfs domain is ETSI and the 629 * new rule covers weather radar band. 630 * Default value of '0' corresponds to 60s timeout, so no 631 * need to update that for other rules. 632 */ 633 if (flags & NL80211_RRF_DFS && 634 reg_info->dfs_region == ATH11K_DFS_REG_ETSI && 635 (reg_rule->end_freq > ETSI_WEATHER_RADAR_BAND_LOW && 636 reg_rule->start_freq < ETSI_WEATHER_RADAR_BAND_HIGH)){ 637 ath11k_reg_update_weather_radar_band(ab, tmp_regd, 638 reg_rule, &i, 639 flags, max_bw); 640 continue; 641 } 642 643 ath11k_dbg(ab, ATH11K_DBG_REG, 644 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n", 645 i + 1, reg_rule->start_freq, reg_rule->end_freq, 646 max_bw, reg_rule->ant_gain, reg_rule->reg_power, 647 tmp_regd->reg_rules[i].dfs_cac_ms, 648 flags); 649 } 650 651 if (intersect) { 652 default_regd = ab->default_regd[reg_info->phy_id]; 653 654 /* Get a new regd by intersecting the received regd with 655 * our default regd. 656 */ 657 new_regd = ath11k_regd_intersect(default_regd, tmp_regd); 658 kfree(tmp_regd); 659 if (!new_regd) { 660 ath11k_warn(ab, "Unable to create intersected regdomain\n"); 661 goto ret; 662 } 663 } else { 664 new_regd = tmp_regd; 665 } 666 667 ret: 668 return new_regd; 669 } 670 671 void ath11k_regd_update_work(struct work_struct *work) 672 { 673 struct ath11k *ar = container_of(work, struct ath11k, 674 regd_update_work); 675 int ret; 676 677 ret = ath11k_regd_update(ar, false); 678 if (ret) { 679 /* Firmware has already moved to the new regd. We need 680 * to maintain channel consistency across FW, Host driver 681 * and userspace. Hence as a fallback mechanism we can set 682 * the prev or default country code to the firmware. 683 */ 684 /* TODO: Implement Fallback Mechanism */ 685 } 686 } 687 688 void ath11k_reg_init(struct ath11k *ar) 689 { 690 ar->hw->wiphy->regulatory_flags = REGULATORY_WIPHY_SELF_MANAGED; 691 ar->hw->wiphy->reg_notifier = ath11k_reg_notifier; 692 } 693 694 void ath11k_reg_free(struct ath11k_base *ab) 695 { 696 int i; 697 698 for (i = 0; i < MAX_RADIOS; i++) { 699 kfree(ab->default_regd[i]); 700 kfree(ab->new_regd[i]); 701 } 702 } 703