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 19static 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 29static 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 44static void 45ath11k_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 init_country_param.cc_info.alpha2[2] = 0; 84 85 ret = ath11k_wmi_send_init_country_cmd(ar, init_country_param); 86 if (ret) 87 ath11k_warn(ar->ab, 88 "INIT Country code set to fw failed : %d\n", ret); 89} 90 91int ath11k_reg_update_chan_list(struct ath11k *ar) 92{ 93 struct ieee80211_supported_band **bands; 94 struct scan_chan_list_params *params; 95 struct ieee80211_channel *channel; 96 struct ieee80211_hw *hw = ar->hw; 97 struct channel_param *ch; 98 enum nl80211_band band; 99 int num_channels = 0; 100 int params_len; 101 int i, ret; 102 103 bands = hw->wiphy->bands; 104 for (band = 0; band < NUM_NL80211_BANDS; band++) { 105 if (!bands[band]) 106 continue; 107 108 for (i = 0; i < bands[band]->n_channels; i++) { 109 if (bands[band]->channels[i].flags & 110 IEEE80211_CHAN_DISABLED) 111 continue; 112 113 num_channels++; 114 } 115 } 116 117 if (WARN_ON(!num_channels)) 118 return -EINVAL; 119 120 params_len = sizeof(struct scan_chan_list_params) + 121 num_channels * sizeof(struct channel_param); 122 params = kzalloc(params_len, GFP_KERNEL); 123 124 if (!params) 125 return -ENOMEM; 126 127 params->pdev_id = ar->pdev->pdev_id; 128 params->nallchans = num_channels; 129 130 ch = params->ch_param; 131 132 for (band = 0; band < NUM_NL80211_BANDS; band++) { 133 if (!bands[band]) 134 continue; 135 136 for (i = 0; i < bands[band]->n_channels; i++) { 137 channel = &bands[band]->channels[i]; 138 139 if (channel->flags & IEEE80211_CHAN_DISABLED) 140 continue; 141 142 /* TODO: Set to true/false based on some condition? */ 143 ch->allow_ht = true; 144 ch->allow_vht = true; 145 ch->allow_he = true; 146 147 ch->dfs_set = 148 !!(channel->flags & IEEE80211_CHAN_RADAR); 149 ch->is_chan_passive = !!(channel->flags & 150 IEEE80211_CHAN_NO_IR); 151 ch->is_chan_passive |= ch->dfs_set; 152 ch->mhz = channel->center_freq; 153 ch->cfreq1 = channel->center_freq; 154 ch->minpower = 0; 155 ch->maxpower = channel->max_power * 2; 156 ch->maxregpower = channel->max_reg_power * 2; 157 ch->antennamax = channel->max_antenna_gain * 2; 158 159 /* TODO: Use appropriate phymodes */ 160 if (channel->band == NL80211_BAND_2GHZ) 161 ch->phy_mode = MODE_11G; 162 else 163 ch->phy_mode = MODE_11A; 164 165 if (channel->band == NL80211_BAND_6GHZ && 166 cfg80211_channel_is_psc(channel)) 167 ch->psc_channel = true; 168 169 ath11k_dbg(ar->ab, ATH11K_DBG_WMI, 170 "mac channel [%d/%d] freq %d maxpower %d regpower %d antenna %d mode %d\n", 171 i, params->nallchans, 172 ch->mhz, ch->maxpower, ch->maxregpower, 173 ch->antennamax, ch->phy_mode); 174 175 ch++; 176 /* TODO: use quarrter/half rate, cfreq12, dfs_cfreq2 177 * set_agile, reg_class_idx 178 */ 179 } 180 } 181 182 ret = ath11k_wmi_send_scan_chan_list_cmd(ar, params); 183 kfree(params); 184 185 return ret; 186} 187 188static void ath11k_copy_regd(struct ieee80211_regdomain *regd_orig, 189 struct ieee80211_regdomain *regd_copy) 190{ 191 u8 i; 192 193 /* The caller should have checked error conditions */ 194 memcpy(regd_copy, regd_orig, sizeof(*regd_orig)); 195 196 for (i = 0; i < regd_orig->n_reg_rules; i++) 197 memcpy(®d_copy->reg_rules[i], ®d_orig->reg_rules[i], 198 sizeof(struct ieee80211_reg_rule)); 199} 200 201int ath11k_regd_update(struct ath11k *ar) 202{ 203 struct ieee80211_regdomain *regd, *regd_copy = NULL; 204 int ret, regd_len, pdev_id; 205 struct ath11k_base *ab; 206 207 ab = ar->ab; 208 pdev_id = ar->pdev_idx; 209 210 spin_lock_bh(&ab->base_lock); 211 212 /* Prefer the latest regd update over default if it's available */ 213 if (ab->new_regd[pdev_id]) { 214 regd = ab->new_regd[pdev_id]; 215 } else { 216 /* Apply the regd received during init through 217 * WMI_REG_CHAN_LIST_CC event. In case of failure to 218 * receive the regd, initialize with a default world 219 * regulatory. 220 */ 221 if (ab->default_regd[pdev_id]) { 222 regd = ab->default_regd[pdev_id]; 223 } else { 224 ath11k_warn(ab, 225 "failed to receive default regd during init\n"); 226 regd = (struct ieee80211_regdomain *)&ath11k_world_regd; 227 } 228 } 229 230 if (!regd) { 231 ret = -EINVAL; 232 spin_unlock_bh(&ab->base_lock); 233 goto err; 234 } 235 236 regd_len = sizeof(*regd) + (regd->n_reg_rules * 237 sizeof(struct ieee80211_reg_rule)); 238 239 regd_copy = kzalloc(regd_len, GFP_ATOMIC); 240 if (regd_copy) 241 ath11k_copy_regd(regd, regd_copy); 242 243 spin_unlock_bh(&ab->base_lock); 244 245 if (!regd_copy) { 246 ret = -ENOMEM; 247 goto err; 248 } 249 250 rtnl_lock(); 251 ret = regulatory_set_wiphy_regd_sync_rtnl(ar->hw->wiphy, regd_copy); 252 rtnl_unlock(); 253 254 kfree(regd_copy); 255 256 if (ret) 257 goto err; 258 259 if (ar->state == ATH11K_STATE_ON) { 260 ret = ath11k_reg_update_chan_list(ar); 261 if (ret) 262 goto err; 263 } 264 265 return 0; 266err: 267 ath11k_warn(ab, "failed to perform regd update : %d\n", ret); 268 return ret; 269} 270 271static enum nl80211_dfs_regions 272ath11k_map_fw_dfs_region(enum ath11k_dfs_region dfs_region) 273{ 274 switch (dfs_region) { 275 case ATH11K_DFS_REG_FCC: 276 case ATH11K_DFS_REG_CN: 277 return NL80211_DFS_FCC; 278 case ATH11K_DFS_REG_ETSI: 279 case ATH11K_DFS_REG_KR: 280 return NL80211_DFS_ETSI; 281 case ATH11K_DFS_REG_MKK: 282 return NL80211_DFS_JP; 283 default: 284 return NL80211_DFS_UNSET; 285 } 286} 287 288static u32 ath11k_map_fw_reg_flags(u16 reg_flags) 289{ 290 u32 flags = 0; 291 292 if (reg_flags & REGULATORY_CHAN_NO_IR) 293 flags = NL80211_RRF_NO_IR; 294 295 if (reg_flags & REGULATORY_CHAN_RADAR) 296 flags |= NL80211_RRF_DFS; 297 298 if (reg_flags & REGULATORY_CHAN_NO_OFDM) 299 flags |= NL80211_RRF_NO_OFDM; 300 301 if (reg_flags & REGULATORY_CHAN_INDOOR_ONLY) 302 flags |= NL80211_RRF_NO_OUTDOOR; 303 304 if (reg_flags & REGULATORY_CHAN_NO_HT40) 305 flags |= NL80211_RRF_NO_HT40; 306 307 if (reg_flags & REGULATORY_CHAN_NO_80MHZ) 308 flags |= NL80211_RRF_NO_80MHZ; 309 310 if (reg_flags & REGULATORY_CHAN_NO_160MHZ) 311 flags |= NL80211_RRF_NO_160MHZ; 312 313 return flags; 314} 315 316static bool 317ath11k_reg_can_intersect(struct ieee80211_reg_rule *rule1, 318 struct ieee80211_reg_rule *rule2) 319{ 320 u32 start_freq1, end_freq1; 321 u32 start_freq2, end_freq2; 322 323 start_freq1 = rule1->freq_range.start_freq_khz; 324 start_freq2 = rule2->freq_range.start_freq_khz; 325 326 end_freq1 = rule1->freq_range.end_freq_khz; 327 end_freq2 = rule2->freq_range.end_freq_khz; 328 329 if ((start_freq1 >= start_freq2 && 330 start_freq1 < end_freq2) || 331 (start_freq2 > start_freq1 && 332 start_freq2 < end_freq1)) 333 return true; 334 335 /* TODO: Should we restrict intersection feasibility 336 * based on min bandwidth of the intersected region also, 337 * say the intersected rule should have a min bandwidth 338 * of 20MHz? 339 */ 340 341 return false; 342} 343 344static void ath11k_reg_intersect_rules(struct ieee80211_reg_rule *rule1, 345 struct ieee80211_reg_rule *rule2, 346 struct ieee80211_reg_rule *new_rule) 347{ 348 u32 start_freq1, end_freq1; 349 u32 start_freq2, end_freq2; 350 u32 freq_diff, max_bw; 351 352 start_freq1 = rule1->freq_range.start_freq_khz; 353 start_freq2 = rule2->freq_range.start_freq_khz; 354 355 end_freq1 = rule1->freq_range.end_freq_khz; 356 end_freq2 = rule2->freq_range.end_freq_khz; 357 358 new_rule->freq_range.start_freq_khz = max_t(u32, start_freq1, 359 start_freq2); 360 new_rule->freq_range.end_freq_khz = min_t(u32, end_freq1, end_freq2); 361 362 freq_diff = new_rule->freq_range.end_freq_khz - 363 new_rule->freq_range.start_freq_khz; 364 max_bw = min_t(u32, rule1->freq_range.max_bandwidth_khz, 365 rule2->freq_range.max_bandwidth_khz); 366 new_rule->freq_range.max_bandwidth_khz = min_t(u32, max_bw, freq_diff); 367 368 new_rule->power_rule.max_antenna_gain = 369 min_t(u32, rule1->power_rule.max_antenna_gain, 370 rule2->power_rule.max_antenna_gain); 371 372 new_rule->power_rule.max_eirp = min_t(u32, rule1->power_rule.max_eirp, 373 rule2->power_rule.max_eirp); 374 375 /* Use the flags of both the rules */ 376 new_rule->flags = rule1->flags | rule2->flags; 377 378 /* To be safe, lts use the max cac timeout of both rules */ 379 new_rule->dfs_cac_ms = max_t(u32, rule1->dfs_cac_ms, 380 rule2->dfs_cac_ms); 381} 382 383static struct ieee80211_regdomain * 384ath11k_regd_intersect(struct ieee80211_regdomain *default_regd, 385 struct ieee80211_regdomain *curr_regd) 386{ 387 u8 num_old_regd_rules, num_curr_regd_rules, num_new_regd_rules; 388 struct ieee80211_reg_rule *old_rule, *curr_rule, *new_rule; 389 struct ieee80211_regdomain *new_regd = NULL; 390 u8 i, j, k; 391 392 num_old_regd_rules = default_regd->n_reg_rules; 393 num_curr_regd_rules = curr_regd->n_reg_rules; 394 num_new_regd_rules = 0; 395 396 /* Find the number of intersecting rules to allocate new regd memory */ 397 for (i = 0; i < num_old_regd_rules; i++) { 398 old_rule = default_regd->reg_rules + i; 399 for (j = 0; j < num_curr_regd_rules; j++) { 400 curr_rule = curr_regd->reg_rules + j; 401 402 if (ath11k_reg_can_intersect(old_rule, curr_rule)) 403 num_new_regd_rules++; 404 } 405 } 406 407 if (!num_new_regd_rules) 408 return NULL; 409 410 new_regd = kzalloc(sizeof(*new_regd) + (num_new_regd_rules * 411 sizeof(struct ieee80211_reg_rule)), 412 GFP_ATOMIC); 413 414 if (!new_regd) 415 return NULL; 416 417 /* We set the new country and dfs region directly and only trim 418 * the freq, power, antenna gain by intersecting with the 419 * default regdomain. Also MAX of the dfs cac timeout is selected. 420 */ 421 new_regd->n_reg_rules = num_new_regd_rules; 422 memcpy(new_regd->alpha2, curr_regd->alpha2, sizeof(new_regd->alpha2)); 423 new_regd->dfs_region = curr_regd->dfs_region; 424 new_rule = new_regd->reg_rules; 425 426 for (i = 0, k = 0; i < num_old_regd_rules; i++) { 427 old_rule = default_regd->reg_rules + i; 428 for (j = 0; j < num_curr_regd_rules; j++) { 429 curr_rule = curr_regd->reg_rules + j; 430 431 if (ath11k_reg_can_intersect(old_rule, curr_rule)) 432 ath11k_reg_intersect_rules(old_rule, curr_rule, 433 (new_rule + k++)); 434 } 435 } 436 return new_regd; 437} 438 439static const char * 440ath11k_reg_get_regdom_str(enum nl80211_dfs_regions dfs_region) 441{ 442 switch (dfs_region) { 443 case NL80211_DFS_FCC: 444 return "FCC"; 445 case NL80211_DFS_ETSI: 446 return "ETSI"; 447 case NL80211_DFS_JP: 448 return "JP"; 449 default: 450 return "UNSET"; 451 } 452} 453 454static u16 455ath11k_reg_adjust_bw(u16 start_freq, u16 end_freq, u16 max_bw) 456{ 457 u16 bw; 458 459 if (end_freq <= start_freq) 460 return 0; 461 462 bw = end_freq - start_freq; 463 bw = min_t(u16, bw, max_bw); 464 465 if (bw >= 80 && bw < 160) 466 bw = 80; 467 else if (bw >= 40 && bw < 80) 468 bw = 40; 469 else if (bw >= 20 && bw < 40) 470 bw = 20; 471 else 472 bw = 0; 473 474 return bw; 475} 476 477static void 478ath11k_reg_update_rule(struct ieee80211_reg_rule *reg_rule, u32 start_freq, 479 u32 end_freq, u32 bw, u32 ant_gain, u32 reg_pwr, 480 u32 reg_flags) 481{ 482 reg_rule->freq_range.start_freq_khz = MHZ_TO_KHZ(start_freq); 483 reg_rule->freq_range.end_freq_khz = MHZ_TO_KHZ(end_freq); 484 reg_rule->freq_range.max_bandwidth_khz = MHZ_TO_KHZ(bw); 485 reg_rule->power_rule.max_antenna_gain = DBI_TO_MBI(ant_gain); 486 reg_rule->power_rule.max_eirp = DBM_TO_MBM(reg_pwr); 487 reg_rule->flags = reg_flags; 488} 489 490static void 491ath11k_reg_update_weather_radar_band(struct ath11k_base *ab, 492 struct ieee80211_regdomain *regd, 493 struct cur_reg_rule *reg_rule, 494 u8 *rule_idx, u32 flags, u16 max_bw) 495{ 496 u32 start_freq; 497 u32 end_freq; 498 u16 bw; 499 u8 i; 500 501 i = *rule_idx; 502 503 /* there might be situations when even the input rule must be dropped */ 504 i--; 505 506 /* frequencies below weather radar */ 507 bw = ath11k_reg_adjust_bw(reg_rule->start_freq, 508 ETSI_WEATHER_RADAR_BAND_LOW, max_bw); 509 if (bw > 0) { 510 i++; 511 512 ath11k_reg_update_rule(regd->reg_rules + i, 513 reg_rule->start_freq, 514 ETSI_WEATHER_RADAR_BAND_LOW, bw, 515 reg_rule->ant_gain, reg_rule->reg_power, 516 flags); 517 518 ath11k_dbg(ab, ATH11K_DBG_REG, 519 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n", 520 i + 1, reg_rule->start_freq, 521 ETSI_WEATHER_RADAR_BAND_LOW, bw, reg_rule->ant_gain, 522 reg_rule->reg_power, regd->reg_rules[i].dfs_cac_ms, 523 flags); 524 } 525 526 /* weather radar frequencies */ 527 start_freq = max_t(u32, reg_rule->start_freq, 528 ETSI_WEATHER_RADAR_BAND_LOW); 529 end_freq = min_t(u32, reg_rule->end_freq, ETSI_WEATHER_RADAR_BAND_HIGH); 530 531 bw = ath11k_reg_adjust_bw(start_freq, end_freq, max_bw); 532 if (bw > 0) { 533 i++; 534 535 ath11k_reg_update_rule(regd->reg_rules + i, start_freq, 536 end_freq, bw, reg_rule->ant_gain, 537 reg_rule->reg_power, flags); 538 539 regd->reg_rules[i].dfs_cac_ms = ETSI_WEATHER_RADAR_BAND_CAC_TIMEOUT; 540 541 ath11k_dbg(ab, ATH11K_DBG_REG, 542 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n", 543 i + 1, start_freq, end_freq, bw, 544 reg_rule->ant_gain, reg_rule->reg_power, 545 regd->reg_rules[i].dfs_cac_ms, flags); 546 } 547 548 /* frequencies above weather radar */ 549 bw = ath11k_reg_adjust_bw(ETSI_WEATHER_RADAR_BAND_HIGH, 550 reg_rule->end_freq, max_bw); 551 if (bw > 0) { 552 i++; 553 554 ath11k_reg_update_rule(regd->reg_rules + i, 555 ETSI_WEATHER_RADAR_BAND_HIGH, 556 reg_rule->end_freq, bw, 557 reg_rule->ant_gain, reg_rule->reg_power, 558 flags); 559 560 ath11k_dbg(ab, ATH11K_DBG_REG, 561 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n", 562 i + 1, ETSI_WEATHER_RADAR_BAND_HIGH, 563 reg_rule->end_freq, bw, reg_rule->ant_gain, 564 reg_rule->reg_power, regd->reg_rules[i].dfs_cac_ms, 565 flags); 566 } 567 568 *rule_idx = i; 569} 570 571struct ieee80211_regdomain * 572ath11k_reg_build_regd(struct ath11k_base *ab, 573 struct cur_regulatory_info *reg_info, bool intersect) 574{ 575 struct ieee80211_regdomain *tmp_regd, *default_regd, *new_regd = NULL; 576 struct cur_reg_rule *reg_rule; 577 u8 i = 0, j = 0; 578 u8 num_rules; 579 u16 max_bw; 580 u32 flags; 581 char alpha2[3]; 582 583 num_rules = reg_info->num_5g_reg_rules + reg_info->num_2g_reg_rules; 584 585 if (!num_rules) 586 goto ret; 587 588 /* Add max additional rules to accommodate weather radar band */ 589 if (reg_info->dfs_region == ATH11K_DFS_REG_ETSI) 590 num_rules += 2; 591 592 tmp_regd = kzalloc(sizeof(*tmp_regd) + 593 (num_rules * sizeof(struct ieee80211_reg_rule)), 594 GFP_ATOMIC); 595 if (!tmp_regd) 596 goto ret; 597 598 memcpy(tmp_regd->alpha2, reg_info->alpha2, REG_ALPHA2_LEN + 1); 599 memcpy(alpha2, reg_info->alpha2, REG_ALPHA2_LEN + 1); 600 alpha2[2] = '\0'; 601 tmp_regd->dfs_region = ath11k_map_fw_dfs_region(reg_info->dfs_region); 602 603 ath11k_dbg(ab, ATH11K_DBG_REG, 604 "\r\nCountry %s, CFG Regdomain %s FW Regdomain %d, num_reg_rules %d\n", 605 alpha2, ath11k_reg_get_regdom_str(tmp_regd->dfs_region), 606 reg_info->dfs_region, num_rules); 607 /* Update reg_rules[] below. Firmware is expected to 608 * send these rules in order(2G rules first and then 5G) 609 */ 610 for (; i < num_rules; i++) { 611 if (reg_info->num_2g_reg_rules && 612 (i < reg_info->num_2g_reg_rules)) { 613 reg_rule = reg_info->reg_rules_2g_ptr + i; 614 max_bw = min_t(u16, reg_rule->max_bw, 615 reg_info->max_bw_2g); 616 flags = 0; 617 } else if (reg_info->num_5g_reg_rules && 618 (j < reg_info->num_5g_reg_rules)) { 619 reg_rule = reg_info->reg_rules_5g_ptr + j++; 620 max_bw = min_t(u16, reg_rule->max_bw, 621 reg_info->max_bw_5g); 622 623 /* FW doesn't pass NL80211_RRF_AUTO_BW flag for 624 * BW Auto correction, we can enable this by default 625 * for all 5G rules here. The regulatory core performs 626 * BW correction if required and applies flags as 627 * per other BW rule flags we pass from here 628 */ 629 flags = NL80211_RRF_AUTO_BW; 630 } else { 631 break; 632 } 633 634 flags |= ath11k_map_fw_reg_flags(reg_rule->flags); 635 636 ath11k_reg_update_rule(tmp_regd->reg_rules + i, 637 reg_rule->start_freq, 638 reg_rule->end_freq, max_bw, 639 reg_rule->ant_gain, reg_rule->reg_power, 640 flags); 641 642 /* Update dfs cac timeout if the dfs domain is ETSI and the 643 * new rule covers weather radar band. 644 * Default value of '0' corresponds to 60s timeout, so no 645 * need to update that for other rules. 646 */ 647 if (flags & NL80211_RRF_DFS && 648 reg_info->dfs_region == ATH11K_DFS_REG_ETSI && 649 (reg_rule->end_freq > ETSI_WEATHER_RADAR_BAND_LOW && 650 reg_rule->start_freq < ETSI_WEATHER_RADAR_BAND_HIGH)){ 651 ath11k_reg_update_weather_radar_band(ab, tmp_regd, 652 reg_rule, &i, 653 flags, max_bw); 654 continue; 655 } 656 657 ath11k_dbg(ab, ATH11K_DBG_REG, 658 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n", 659 i + 1, reg_rule->start_freq, reg_rule->end_freq, 660 max_bw, reg_rule->ant_gain, reg_rule->reg_power, 661 tmp_regd->reg_rules[i].dfs_cac_ms, 662 flags); 663 } 664 665 tmp_regd->n_reg_rules = i; 666 667 if (intersect) { 668 default_regd = ab->default_regd[reg_info->phy_id]; 669 670 /* Get a new regd by intersecting the received regd with 671 * our default regd. 672 */ 673 new_regd = ath11k_regd_intersect(default_regd, tmp_regd); 674 kfree(tmp_regd); 675 if (!new_regd) { 676 ath11k_warn(ab, "Unable to create intersected regdomain\n"); 677 goto ret; 678 } 679 } else { 680 new_regd = tmp_regd; 681 } 682 683ret: 684 return new_regd; 685} 686 687void ath11k_regd_update_work(struct work_struct *work) 688{ 689 struct ath11k *ar = container_of(work, struct ath11k, 690 regd_update_work); 691 int ret; 692 693 ret = ath11k_regd_update(ar); 694 if (ret) { 695 /* Firmware has already moved to the new regd. We need 696 * to maintain channel consistency across FW, Host driver 697 * and userspace. Hence as a fallback mechanism we can set 698 * the prev or default country code to the firmware. 699 */ 700 /* TODO: Implement Fallback Mechanism */ 701 } 702} 703 704void ath11k_reg_init(struct ath11k *ar) 705{ 706 ar->hw->wiphy->regulatory_flags = REGULATORY_WIPHY_SELF_MANAGED; 707 ar->hw->wiphy->reg_notifier = ath11k_reg_notifier; 708} 709 710void ath11k_reg_free(struct ath11k_base *ab) 711{ 712 int i; 713 714 for (i = 0; i < ab->hw_params.max_radios; i++) { 715 kfree(ab->default_regd[i]); 716 kfree(ab->new_regd[i]); 717 } 718} 719