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 memcpy(&ar->alpha2, &set_current_param.alpha2, 2); 87 ret = ath11k_wmi_send_set_current_country_cmd(ar, &set_current_param); 88 if (ret) 89 ath11k_warn(ar->ab, 90 "failed set current country code: %d\n", ret); 91 } else { 92 init_country_param.flags = ALPHA_IS_SET; 93 memcpy(&init_country_param.cc_info.alpha2, request->alpha2, 2); 94 init_country_param.cc_info.alpha2[2] = 0; 95 96 ret = ath11k_wmi_send_init_country_cmd(ar, init_country_param); 97 if (ret) 98 ath11k_warn(ar->ab, 99 "INIT Country code set to fw failed : %d\n", ret); 100 } 101 102 ath11k_mac_11d_scan_stop(ar); 103 ar->regdom_set_by_user = true; 104 } 105 106 int ath11k_reg_update_chan_list(struct ath11k *ar, bool wait) 107 { 108 struct ieee80211_supported_band **bands; 109 struct scan_chan_list_params *params; 110 struct ieee80211_channel *channel; 111 struct ieee80211_hw *hw = ar->hw; 112 struct channel_param *ch; 113 enum nl80211_band band; 114 int num_channels = 0; 115 int i, ret, left; 116 117 if (wait && ar->state_11d != ATH11K_11D_IDLE) { 118 left = wait_for_completion_timeout(&ar->completed_11d_scan, 119 ATH11K_SCAN_TIMEOUT_HZ); 120 if (!left) { 121 ath11k_dbg(ar->ab, ATH11K_DBG_REG, 122 "failed to receive 11d scan complete: timed out\n"); 123 ar->state_11d = ATH11K_11D_IDLE; 124 } 125 ath11k_dbg(ar->ab, ATH11K_DBG_REG, 126 "reg 11d scan wait left time %d\n", left); 127 } 128 129 if (wait && 130 (ar->scan.state == ATH11K_SCAN_STARTING || 131 ar->scan.state == ATH11K_SCAN_RUNNING)) { 132 left = wait_for_completion_timeout(&ar->scan.completed, 133 ATH11K_SCAN_TIMEOUT_HZ); 134 if (!left) 135 ath11k_dbg(ar->ab, ATH11K_DBG_REG, 136 "failed to receive hw scan complete: timed out\n"); 137 138 ath11k_dbg(ar->ab, ATH11K_DBG_REG, 139 "reg hw scan wait left time %d\n", left); 140 } 141 142 if (ar->state == ATH11K_STATE_RESTARTING) 143 return 0; 144 145 bands = hw->wiphy->bands; 146 for (band = 0; band < NUM_NL80211_BANDS; band++) { 147 if (!bands[band]) 148 continue; 149 150 for (i = 0; i < bands[band]->n_channels; i++) { 151 if (bands[band]->channels[i].flags & 152 IEEE80211_CHAN_DISABLED) 153 continue; 154 155 num_channels++; 156 } 157 } 158 159 if (WARN_ON(!num_channels)) 160 return -EINVAL; 161 162 params = kzalloc(struct_size(params, ch_param, num_channels), 163 GFP_KERNEL); 164 if (!params) 165 return -ENOMEM; 166 167 params->pdev_id = ar->pdev->pdev_id; 168 params->nallchans = num_channels; 169 170 ch = params->ch_param; 171 172 for (band = 0; band < NUM_NL80211_BANDS; band++) { 173 if (!bands[band]) 174 continue; 175 176 for (i = 0; i < bands[band]->n_channels; i++) { 177 channel = &bands[band]->channels[i]; 178 179 if (channel->flags & IEEE80211_CHAN_DISABLED) 180 continue; 181 182 /* TODO: Set to true/false based on some condition? */ 183 ch->allow_ht = true; 184 ch->allow_vht = true; 185 ch->allow_he = true; 186 187 ch->dfs_set = 188 !!(channel->flags & IEEE80211_CHAN_RADAR); 189 ch->is_chan_passive = !!(channel->flags & 190 IEEE80211_CHAN_NO_IR); 191 ch->is_chan_passive |= ch->dfs_set; 192 ch->mhz = channel->center_freq; 193 ch->cfreq1 = channel->center_freq; 194 ch->minpower = 0; 195 ch->maxpower = channel->max_power * 2; 196 ch->maxregpower = channel->max_reg_power * 2; 197 ch->antennamax = channel->max_antenna_gain * 2; 198 199 /* TODO: Use appropriate phymodes */ 200 if (channel->band == NL80211_BAND_2GHZ) 201 ch->phy_mode = MODE_11G; 202 else 203 ch->phy_mode = MODE_11A; 204 205 if (channel->band == NL80211_BAND_6GHZ && 206 cfg80211_channel_is_psc(channel)) 207 ch->psc_channel = true; 208 209 ath11k_dbg(ar->ab, ATH11K_DBG_WMI, 210 "mac channel [%d/%d] freq %d maxpower %d regpower %d antenna %d mode %d\n", 211 i, params->nallchans, 212 ch->mhz, ch->maxpower, ch->maxregpower, 213 ch->antennamax, ch->phy_mode); 214 215 ch++; 216 /* TODO: use quarrter/half rate, cfreq12, dfs_cfreq2 217 * set_agile, reg_class_idx 218 */ 219 } 220 } 221 222 ret = ath11k_wmi_send_scan_chan_list_cmd(ar, params); 223 kfree(params); 224 225 return ret; 226 } 227 228 static void ath11k_copy_regd(struct ieee80211_regdomain *regd_orig, 229 struct ieee80211_regdomain *regd_copy) 230 { 231 u8 i; 232 233 /* The caller should have checked error conditions */ 234 memcpy(regd_copy, regd_orig, sizeof(*regd_orig)); 235 236 for (i = 0; i < regd_orig->n_reg_rules; i++) 237 memcpy(®d_copy->reg_rules[i], ®d_orig->reg_rules[i], 238 sizeof(struct ieee80211_reg_rule)); 239 } 240 241 int ath11k_regd_update(struct ath11k *ar) 242 { 243 struct ieee80211_regdomain *regd, *regd_copy = NULL; 244 int ret, regd_len, pdev_id; 245 struct ath11k_base *ab; 246 247 ab = ar->ab; 248 pdev_id = ar->pdev_idx; 249 250 spin_lock_bh(&ab->base_lock); 251 252 /* Prefer the latest regd update over default if it's available */ 253 if (ab->new_regd[pdev_id]) { 254 regd = ab->new_regd[pdev_id]; 255 } else { 256 /* Apply the regd received during init through 257 * WMI_REG_CHAN_LIST_CC event. In case of failure to 258 * receive the regd, initialize with a default world 259 * regulatory. 260 */ 261 if (ab->default_regd[pdev_id]) { 262 regd = ab->default_regd[pdev_id]; 263 } else { 264 ath11k_warn(ab, 265 "failed to receive default regd during init\n"); 266 regd = (struct ieee80211_regdomain *)&ath11k_world_regd; 267 } 268 } 269 270 if (!regd) { 271 ret = -EINVAL; 272 spin_unlock_bh(&ab->base_lock); 273 goto err; 274 } 275 276 regd_len = sizeof(*regd) + (regd->n_reg_rules * 277 sizeof(struct ieee80211_reg_rule)); 278 279 regd_copy = kzalloc(regd_len, GFP_ATOMIC); 280 if (regd_copy) 281 ath11k_copy_regd(regd, regd_copy); 282 283 spin_unlock_bh(&ab->base_lock); 284 285 if (!regd_copy) { 286 ret = -ENOMEM; 287 goto err; 288 } 289 290 ret = regulatory_set_wiphy_regd(ar->hw->wiphy, regd_copy); 291 292 kfree(regd_copy); 293 294 if (ret) 295 goto err; 296 297 if (ar->state == ATH11K_STATE_ON) { 298 ret = ath11k_reg_update_chan_list(ar, true); 299 if (ret) 300 goto err; 301 } 302 303 return 0; 304 err: 305 ath11k_warn(ab, "failed to perform regd update : %d\n", ret); 306 return ret; 307 } 308 309 static enum nl80211_dfs_regions 310 ath11k_map_fw_dfs_region(enum ath11k_dfs_region dfs_region) 311 { 312 switch (dfs_region) { 313 case ATH11K_DFS_REG_FCC: 314 case ATH11K_DFS_REG_CN: 315 return NL80211_DFS_FCC; 316 case ATH11K_DFS_REG_ETSI: 317 case ATH11K_DFS_REG_KR: 318 return NL80211_DFS_ETSI; 319 case ATH11K_DFS_REG_MKK: 320 case ATH11K_DFS_REG_MKK_N: 321 return NL80211_DFS_JP; 322 default: 323 return NL80211_DFS_UNSET; 324 } 325 } 326 327 static u32 ath11k_map_fw_reg_flags(u16 reg_flags) 328 { 329 u32 flags = 0; 330 331 if (reg_flags & REGULATORY_CHAN_NO_IR) 332 flags = NL80211_RRF_NO_IR; 333 334 if (reg_flags & REGULATORY_CHAN_RADAR) 335 flags |= NL80211_RRF_DFS; 336 337 if (reg_flags & REGULATORY_CHAN_NO_OFDM) 338 flags |= NL80211_RRF_NO_OFDM; 339 340 if (reg_flags & REGULATORY_CHAN_INDOOR_ONLY) 341 flags |= NL80211_RRF_NO_OUTDOOR; 342 343 if (reg_flags & REGULATORY_CHAN_NO_HT40) 344 flags |= NL80211_RRF_NO_HT40; 345 346 if (reg_flags & REGULATORY_CHAN_NO_80MHZ) 347 flags |= NL80211_RRF_NO_80MHZ; 348 349 if (reg_flags & REGULATORY_CHAN_NO_160MHZ) 350 flags |= NL80211_RRF_NO_160MHZ; 351 352 return flags; 353 } 354 355 static bool 356 ath11k_reg_can_intersect(struct ieee80211_reg_rule *rule1, 357 struct ieee80211_reg_rule *rule2) 358 { 359 u32 start_freq1, end_freq1; 360 u32 start_freq2, end_freq2; 361 362 start_freq1 = rule1->freq_range.start_freq_khz; 363 start_freq2 = rule2->freq_range.start_freq_khz; 364 365 end_freq1 = rule1->freq_range.end_freq_khz; 366 end_freq2 = rule2->freq_range.end_freq_khz; 367 368 if ((start_freq1 >= start_freq2 && 369 start_freq1 < end_freq2) || 370 (start_freq2 > start_freq1 && 371 start_freq2 < end_freq1)) 372 return true; 373 374 /* TODO: Should we restrict intersection feasibility 375 * based on min bandwidth of the intersected region also, 376 * say the intersected rule should have a min bandwidth 377 * of 20MHz? 378 */ 379 380 return false; 381 } 382 383 static void ath11k_reg_intersect_rules(struct ieee80211_reg_rule *rule1, 384 struct ieee80211_reg_rule *rule2, 385 struct ieee80211_reg_rule *new_rule) 386 { 387 u32 start_freq1, end_freq1; 388 u32 start_freq2, end_freq2; 389 u32 freq_diff, max_bw; 390 391 start_freq1 = rule1->freq_range.start_freq_khz; 392 start_freq2 = rule2->freq_range.start_freq_khz; 393 394 end_freq1 = rule1->freq_range.end_freq_khz; 395 end_freq2 = rule2->freq_range.end_freq_khz; 396 397 new_rule->freq_range.start_freq_khz = max_t(u32, start_freq1, 398 start_freq2); 399 new_rule->freq_range.end_freq_khz = min_t(u32, end_freq1, end_freq2); 400 401 freq_diff = new_rule->freq_range.end_freq_khz - 402 new_rule->freq_range.start_freq_khz; 403 max_bw = min_t(u32, rule1->freq_range.max_bandwidth_khz, 404 rule2->freq_range.max_bandwidth_khz); 405 new_rule->freq_range.max_bandwidth_khz = min_t(u32, max_bw, freq_diff); 406 407 new_rule->power_rule.max_antenna_gain = 408 min_t(u32, rule1->power_rule.max_antenna_gain, 409 rule2->power_rule.max_antenna_gain); 410 411 new_rule->power_rule.max_eirp = min_t(u32, rule1->power_rule.max_eirp, 412 rule2->power_rule.max_eirp); 413 414 /* Use the flags of both the rules */ 415 new_rule->flags = rule1->flags | rule2->flags; 416 417 /* To be safe, lts use the max cac timeout of both rules */ 418 new_rule->dfs_cac_ms = max_t(u32, rule1->dfs_cac_ms, 419 rule2->dfs_cac_ms); 420 } 421 422 static struct ieee80211_regdomain * 423 ath11k_regd_intersect(struct ieee80211_regdomain *default_regd, 424 struct ieee80211_regdomain *curr_regd) 425 { 426 u8 num_old_regd_rules, num_curr_regd_rules, num_new_regd_rules; 427 struct ieee80211_reg_rule *old_rule, *curr_rule, *new_rule; 428 struct ieee80211_regdomain *new_regd = NULL; 429 u8 i, j, k; 430 431 num_old_regd_rules = default_regd->n_reg_rules; 432 num_curr_regd_rules = curr_regd->n_reg_rules; 433 num_new_regd_rules = 0; 434 435 /* Find the number of intersecting rules to allocate new regd memory */ 436 for (i = 0; i < num_old_regd_rules; i++) { 437 old_rule = default_regd->reg_rules + i; 438 for (j = 0; j < num_curr_regd_rules; j++) { 439 curr_rule = curr_regd->reg_rules + j; 440 441 if (ath11k_reg_can_intersect(old_rule, curr_rule)) 442 num_new_regd_rules++; 443 } 444 } 445 446 if (!num_new_regd_rules) 447 return NULL; 448 449 new_regd = kzalloc(sizeof(*new_regd) + (num_new_regd_rules * 450 sizeof(struct ieee80211_reg_rule)), 451 GFP_ATOMIC); 452 453 if (!new_regd) 454 return NULL; 455 456 /* We set the new country and dfs region directly and only trim 457 * the freq, power, antenna gain by intersecting with the 458 * default regdomain. Also MAX of the dfs cac timeout is selected. 459 */ 460 new_regd->n_reg_rules = num_new_regd_rules; 461 memcpy(new_regd->alpha2, curr_regd->alpha2, sizeof(new_regd->alpha2)); 462 new_regd->dfs_region = curr_regd->dfs_region; 463 new_rule = new_regd->reg_rules; 464 465 for (i = 0, k = 0; i < num_old_regd_rules; i++) { 466 old_rule = default_regd->reg_rules + i; 467 for (j = 0; j < num_curr_regd_rules; j++) { 468 curr_rule = curr_regd->reg_rules + j; 469 470 if (ath11k_reg_can_intersect(old_rule, curr_rule)) 471 ath11k_reg_intersect_rules(old_rule, curr_rule, 472 (new_rule + k++)); 473 } 474 } 475 return new_regd; 476 } 477 478 static const char * 479 ath11k_reg_get_regdom_str(enum nl80211_dfs_regions dfs_region) 480 { 481 switch (dfs_region) { 482 case NL80211_DFS_FCC: 483 return "FCC"; 484 case NL80211_DFS_ETSI: 485 return "ETSI"; 486 case NL80211_DFS_JP: 487 return "JP"; 488 default: 489 return "UNSET"; 490 } 491 } 492 493 static u16 494 ath11k_reg_adjust_bw(u16 start_freq, u16 end_freq, u16 max_bw) 495 { 496 u16 bw; 497 498 if (end_freq <= start_freq) 499 return 0; 500 501 bw = end_freq - start_freq; 502 bw = min_t(u16, bw, max_bw); 503 504 if (bw >= 80 && bw < 160) 505 bw = 80; 506 else if (bw >= 40 && bw < 80) 507 bw = 40; 508 else if (bw >= 20 && bw < 40) 509 bw = 20; 510 else 511 bw = 0; 512 513 return bw; 514 } 515 516 static void 517 ath11k_reg_update_rule(struct ieee80211_reg_rule *reg_rule, u32 start_freq, 518 u32 end_freq, u32 bw, u32 ant_gain, u32 reg_pwr, 519 u32 reg_flags) 520 { 521 reg_rule->freq_range.start_freq_khz = MHZ_TO_KHZ(start_freq); 522 reg_rule->freq_range.end_freq_khz = MHZ_TO_KHZ(end_freq); 523 reg_rule->freq_range.max_bandwidth_khz = MHZ_TO_KHZ(bw); 524 reg_rule->power_rule.max_antenna_gain = DBI_TO_MBI(ant_gain); 525 reg_rule->power_rule.max_eirp = DBM_TO_MBM(reg_pwr); 526 reg_rule->flags = reg_flags; 527 } 528 529 static void 530 ath11k_reg_update_weather_radar_band(struct ath11k_base *ab, 531 struct ieee80211_regdomain *regd, 532 struct cur_reg_rule *reg_rule, 533 u8 *rule_idx, u32 flags, u16 max_bw) 534 { 535 u32 start_freq; 536 u32 end_freq; 537 u16 bw; 538 u8 i; 539 540 i = *rule_idx; 541 542 /* there might be situations when even the input rule must be dropped */ 543 i--; 544 545 /* frequencies below weather radar */ 546 bw = ath11k_reg_adjust_bw(reg_rule->start_freq, 547 ETSI_WEATHER_RADAR_BAND_LOW, max_bw); 548 if (bw > 0) { 549 i++; 550 551 ath11k_reg_update_rule(regd->reg_rules + i, 552 reg_rule->start_freq, 553 ETSI_WEATHER_RADAR_BAND_LOW, bw, 554 reg_rule->ant_gain, reg_rule->reg_power, 555 flags); 556 557 ath11k_dbg(ab, ATH11K_DBG_REG, 558 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n", 559 i + 1, reg_rule->start_freq, 560 ETSI_WEATHER_RADAR_BAND_LOW, bw, reg_rule->ant_gain, 561 reg_rule->reg_power, regd->reg_rules[i].dfs_cac_ms, 562 flags); 563 } 564 565 /* weather radar frequencies */ 566 start_freq = max_t(u32, reg_rule->start_freq, 567 ETSI_WEATHER_RADAR_BAND_LOW); 568 end_freq = min_t(u32, reg_rule->end_freq, ETSI_WEATHER_RADAR_BAND_HIGH); 569 570 bw = ath11k_reg_adjust_bw(start_freq, end_freq, max_bw); 571 if (bw > 0) { 572 i++; 573 574 ath11k_reg_update_rule(regd->reg_rules + i, start_freq, 575 end_freq, bw, reg_rule->ant_gain, 576 reg_rule->reg_power, flags); 577 578 regd->reg_rules[i].dfs_cac_ms = ETSI_WEATHER_RADAR_BAND_CAC_TIMEOUT; 579 580 ath11k_dbg(ab, ATH11K_DBG_REG, 581 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n", 582 i + 1, start_freq, end_freq, bw, 583 reg_rule->ant_gain, reg_rule->reg_power, 584 regd->reg_rules[i].dfs_cac_ms, flags); 585 } 586 587 /* frequencies above weather radar */ 588 bw = ath11k_reg_adjust_bw(ETSI_WEATHER_RADAR_BAND_HIGH, 589 reg_rule->end_freq, max_bw); 590 if (bw > 0) { 591 i++; 592 593 ath11k_reg_update_rule(regd->reg_rules + i, 594 ETSI_WEATHER_RADAR_BAND_HIGH, 595 reg_rule->end_freq, bw, 596 reg_rule->ant_gain, reg_rule->reg_power, 597 flags); 598 599 ath11k_dbg(ab, ATH11K_DBG_REG, 600 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n", 601 i + 1, ETSI_WEATHER_RADAR_BAND_HIGH, 602 reg_rule->end_freq, bw, reg_rule->ant_gain, 603 reg_rule->reg_power, regd->reg_rules[i].dfs_cac_ms, 604 flags); 605 } 606 607 *rule_idx = i; 608 } 609 610 struct ieee80211_regdomain * 611 ath11k_reg_build_regd(struct ath11k_base *ab, 612 struct cur_regulatory_info *reg_info, bool intersect) 613 { 614 struct ieee80211_regdomain *tmp_regd, *default_regd, *new_regd = NULL; 615 struct cur_reg_rule *reg_rule; 616 u8 i = 0, j = 0; 617 u8 num_rules; 618 u16 max_bw; 619 u32 flags; 620 char alpha2[3]; 621 622 num_rules = reg_info->num_5g_reg_rules + reg_info->num_2g_reg_rules; 623 624 if (!num_rules) 625 goto ret; 626 627 /* Add max additional rules to accommodate weather radar band */ 628 if (reg_info->dfs_region == ATH11K_DFS_REG_ETSI) 629 num_rules += 2; 630 631 tmp_regd = kzalloc(sizeof(*tmp_regd) + 632 (num_rules * sizeof(struct ieee80211_reg_rule)), 633 GFP_ATOMIC); 634 if (!tmp_regd) 635 goto ret; 636 637 memcpy(tmp_regd->alpha2, reg_info->alpha2, REG_ALPHA2_LEN + 1); 638 memcpy(alpha2, reg_info->alpha2, REG_ALPHA2_LEN + 1); 639 alpha2[2] = '\0'; 640 tmp_regd->dfs_region = ath11k_map_fw_dfs_region(reg_info->dfs_region); 641 642 ath11k_dbg(ab, ATH11K_DBG_REG, 643 "\r\nCountry %s, CFG Regdomain %s FW Regdomain %d, num_reg_rules %d\n", 644 alpha2, ath11k_reg_get_regdom_str(tmp_regd->dfs_region), 645 reg_info->dfs_region, num_rules); 646 /* Update reg_rules[] below. Firmware is expected to 647 * send these rules in order(2G rules first and then 5G) 648 */ 649 for (; i < num_rules; i++) { 650 if (reg_info->num_2g_reg_rules && 651 (i < reg_info->num_2g_reg_rules)) { 652 reg_rule = reg_info->reg_rules_2g_ptr + i; 653 max_bw = min_t(u16, reg_rule->max_bw, 654 reg_info->max_bw_2g); 655 flags = 0; 656 } else if (reg_info->num_5g_reg_rules && 657 (j < reg_info->num_5g_reg_rules)) { 658 reg_rule = reg_info->reg_rules_5g_ptr + j++; 659 max_bw = min_t(u16, reg_rule->max_bw, 660 reg_info->max_bw_5g); 661 662 /* FW doesn't pass NL80211_RRF_AUTO_BW flag for 663 * BW Auto correction, we can enable this by default 664 * for all 5G rules here. The regulatory core performs 665 * BW correction if required and applies flags as 666 * per other BW rule flags we pass from here 667 */ 668 flags = NL80211_RRF_AUTO_BW; 669 } else { 670 break; 671 } 672 673 flags |= ath11k_map_fw_reg_flags(reg_rule->flags); 674 675 ath11k_reg_update_rule(tmp_regd->reg_rules + i, 676 reg_rule->start_freq, 677 reg_rule->end_freq, max_bw, 678 reg_rule->ant_gain, reg_rule->reg_power, 679 flags); 680 681 /* Update dfs cac timeout if the dfs domain is ETSI and the 682 * new rule covers weather radar band. 683 * Default value of '0' corresponds to 60s timeout, so no 684 * need to update that for other rules. 685 */ 686 if (flags & NL80211_RRF_DFS && 687 reg_info->dfs_region == ATH11K_DFS_REG_ETSI && 688 (reg_rule->end_freq > ETSI_WEATHER_RADAR_BAND_LOW && 689 reg_rule->start_freq < ETSI_WEATHER_RADAR_BAND_HIGH)){ 690 ath11k_reg_update_weather_radar_band(ab, tmp_regd, 691 reg_rule, &i, 692 flags, max_bw); 693 continue; 694 } 695 696 ath11k_dbg(ab, ATH11K_DBG_REG, 697 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n", 698 i + 1, reg_rule->start_freq, reg_rule->end_freq, 699 max_bw, reg_rule->ant_gain, reg_rule->reg_power, 700 tmp_regd->reg_rules[i].dfs_cac_ms, 701 flags); 702 } 703 704 tmp_regd->n_reg_rules = i; 705 706 if (intersect) { 707 default_regd = ab->default_regd[reg_info->phy_id]; 708 709 /* Get a new regd by intersecting the received regd with 710 * our default regd. 711 */ 712 new_regd = ath11k_regd_intersect(default_regd, tmp_regd); 713 kfree(tmp_regd); 714 if (!new_regd) { 715 ath11k_warn(ab, "Unable to create intersected regdomain\n"); 716 goto ret; 717 } 718 } else { 719 new_regd = tmp_regd; 720 } 721 722 ret: 723 return new_regd; 724 } 725 726 void ath11k_regd_update_work(struct work_struct *work) 727 { 728 struct ath11k *ar = container_of(work, struct ath11k, 729 regd_update_work); 730 int ret; 731 732 ret = ath11k_regd_update(ar); 733 if (ret) { 734 /* Firmware has already moved to the new regd. We need 735 * to maintain channel consistency across FW, Host driver 736 * and userspace. Hence as a fallback mechanism we can set 737 * the prev or default country code to the firmware. 738 */ 739 /* TODO: Implement Fallback Mechanism */ 740 } 741 } 742 743 void ath11k_reg_init(struct ath11k *ar) 744 { 745 ar->hw->wiphy->regulatory_flags = REGULATORY_WIPHY_SELF_MANAGED; 746 ar->hw->wiphy->reg_notifier = ath11k_reg_notifier; 747 } 748 749 void ath11k_reg_free(struct ath11k_base *ab) 750 { 751 int i; 752 753 for (i = 0; i < ab->hw_params.max_radios; i++) { 754 kfree(ab->default_regd[i]); 755 kfree(ab->new_regd[i]); 756 } 757 } 758