1 // SPDX-License-Identifier: BSD-3-Clause-Clear 2 /* 3 * Copyright (c) 2018-2019 The Linux Foundation. All rights reserved. 4 * Copyright (c) 2021-2025 Qualcomm Innovation Center, Inc. All rights reserved. 5 */ 6 #include <linux/rtnetlink.h> 7 8 #include "core.h" 9 #include "debug.h" 10 11 /* World regdom to be used in case default regd from fw is unavailable */ 12 #define ATH11K_2GHZ_CH01_11 REG_RULE(2412 - 10, 2462 + 10, 40, 0, 20, 0) 13 #define ATH11K_5GHZ_5150_5350 REG_RULE(5150 - 10, 5350 + 10, 80, 0, 30,\ 14 NL80211_RRF_NO_IR) 15 #define ATH11K_5GHZ_5725_5850 REG_RULE(5725 - 10, 5850 + 10, 80, 0, 30,\ 16 NL80211_RRF_NO_IR) 17 18 #define ETSI_WEATHER_RADAR_BAND_LOW 5590 19 #define ETSI_WEATHER_RADAR_BAND_HIGH 5650 20 #define ETSI_WEATHER_RADAR_BAND_CAC_TIMEOUT 600000 21 22 static const struct ieee80211_regdomain ath11k_world_regd = { 23 .n_reg_rules = 3, 24 .alpha2 = "00", 25 .reg_rules = { 26 ATH11K_2GHZ_CH01_11, 27 ATH11K_5GHZ_5150_5350, 28 ATH11K_5GHZ_5725_5850, 29 } 30 }; 31 32 static bool ath11k_regdom_changes(struct ath11k *ar, char *alpha2) 33 { 34 const struct ieee80211_regdomain *regd; 35 36 regd = rcu_dereference_rtnl(ar->hw->wiphy->regd); 37 /* This can happen during wiphy registration where the previous 38 * user request is received before we update the regd received 39 * from firmware. 40 */ 41 if (!regd) 42 return true; 43 44 return memcmp(regd->alpha2, alpha2, 2) != 0; 45 } 46 47 static void 48 ath11k_reg_notifier(struct wiphy *wiphy, struct regulatory_request *request) 49 { 50 struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy); 51 struct wmi_init_country_params init_country_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 if (request->initiator == NL80211_REGDOM_SET_BY_DRIVER) { 59 ath11k_dbg(ar->ab, ATH11K_DBG_REG, 60 "driver initiated regd update\n"); 61 if (ar->state != ATH11K_STATE_ON) 62 return; 63 64 ret = ath11k_reg_update_chan_list(ar, true); 65 if (ret) 66 ath11k_warn(ar->ab, "failed to update channel list: %d\n", ret); 67 68 return; 69 } 70 71 /* Currently supporting only General User Hints. Cell base user 72 * hints to be handled later. 73 * Hints from other sources like Core, Beacons are not expected for 74 * self managed wiphy's 75 */ 76 if (!(request->initiator == NL80211_REGDOM_SET_BY_USER && 77 request->user_reg_hint_type == NL80211_USER_REG_HINT_USER)) { 78 ath11k_warn(ar->ab, "Unexpected Regulatory event for this wiphy\n"); 79 return; 80 } 81 82 if (!IS_ENABLED(CONFIG_ATH_REG_DYNAMIC_USER_REG_HINTS)) { 83 ath11k_dbg(ar->ab, ATH11K_DBG_REG, 84 "Country Setting is not allowed\n"); 85 return; 86 } 87 88 if (!ath11k_regdom_changes(ar, request->alpha2)) { 89 ath11k_dbg(ar->ab, ATH11K_DBG_REG, "Country is already set\n"); 90 return; 91 } 92 93 /* Set the country code to the firmware and will receive 94 * the WMI_REG_CHAN_LIST_CC EVENT for updating the 95 * reg info 96 */ 97 if (ar->ab->hw_params.current_cc_support) { 98 memcpy(&ar->alpha2, request->alpha2, 2); 99 ret = ath11k_reg_set_cc(ar); 100 if (ret) 101 ath11k_warn(ar->ab, 102 "failed set current country code: %d\n", ret); 103 } else { 104 init_country_param.flags = ALPHA_IS_SET; 105 memcpy(&init_country_param.cc_info.alpha2, request->alpha2, 2); 106 init_country_param.cc_info.alpha2[2] = 0; 107 108 ret = ath11k_wmi_send_init_country_cmd(ar, init_country_param); 109 if (ret) 110 ath11k_warn(ar->ab, 111 "INIT Country code set to fw failed : %d\n", ret); 112 } 113 114 ath11k_mac_11d_scan_stop(ar); 115 ar->regdom_set_by_user = true; 116 } 117 118 int ath11k_reg_update_chan_list(struct ath11k *ar, bool wait) 119 { 120 struct ieee80211_supported_band **bands; 121 struct scan_chan_list_params *params; 122 struct ieee80211_channel *channel; 123 struct ieee80211_hw *hw = ar->hw; 124 struct channel_param *ch; 125 enum nl80211_band band; 126 int num_channels = 0; 127 int i, ret = 0; 128 129 if (ar->state == ATH11K_STATE_RESTARTING) 130 return 0; 131 132 bands = hw->wiphy->bands; 133 for (band = 0; band < NUM_NL80211_BANDS; band++) { 134 if (!bands[band]) 135 continue; 136 137 for (i = 0; i < bands[band]->n_channels; i++) { 138 if (bands[band]->channels[i].flags & 139 IEEE80211_CHAN_DISABLED) 140 continue; 141 142 num_channels++; 143 } 144 } 145 146 if (WARN_ON(!num_channels)) 147 return -EINVAL; 148 149 params = kzalloc(struct_size(params, ch_param, num_channels), 150 GFP_KERNEL); 151 if (!params) 152 return -ENOMEM; 153 154 params->pdev_id = ar->pdev->pdev_id; 155 params->nallchans = num_channels; 156 157 ch = params->ch_param; 158 159 for (band = 0; band < NUM_NL80211_BANDS; band++) { 160 if (!bands[band]) 161 continue; 162 163 for (i = 0; i < bands[band]->n_channels; i++) { 164 channel = &bands[band]->channels[i]; 165 166 if (channel->flags & IEEE80211_CHAN_DISABLED) 167 continue; 168 169 /* TODO: Set to true/false based on some condition? */ 170 ch->allow_ht = true; 171 ch->allow_vht = true; 172 ch->allow_he = true; 173 174 ch->dfs_set = 175 !!(channel->flags & IEEE80211_CHAN_RADAR); 176 ch->is_chan_passive = !!(channel->flags & 177 IEEE80211_CHAN_NO_IR); 178 ch->is_chan_passive |= ch->dfs_set; 179 ch->mhz = channel->center_freq; 180 ch->cfreq1 = channel->center_freq; 181 ch->minpower = 0; 182 ch->maxpower = channel->max_power * 2; 183 ch->maxregpower = channel->max_reg_power * 2; 184 ch->antennamax = channel->max_antenna_gain * 2; 185 186 /* TODO: Use appropriate phymodes */ 187 if (channel->band == NL80211_BAND_2GHZ) 188 ch->phy_mode = MODE_11G; 189 else 190 ch->phy_mode = MODE_11A; 191 192 if (channel->band == NL80211_BAND_6GHZ && 193 cfg80211_channel_is_psc(channel)) 194 ch->psc_channel = true; 195 196 ath11k_dbg(ar->ab, ATH11K_DBG_WMI, 197 "mac channel [%d/%d] freq %d maxpower %d regpower %d antenna %d mode %d\n", 198 i, params->nallchans, 199 ch->mhz, ch->maxpower, ch->maxregpower, 200 ch->antennamax, ch->phy_mode); 201 202 ch++; 203 /* TODO: use quarrter/half rate, cfreq12, dfs_cfreq2 204 * set_agile, reg_class_idx 205 */ 206 } 207 } 208 209 if (wait) { 210 spin_lock_bh(&ar->data_lock); 211 list_add_tail(¶ms->list, &ar->channel_update_queue); 212 spin_unlock_bh(&ar->data_lock); 213 214 queue_work(ar->ab->workqueue, &ar->channel_update_work); 215 216 return 0; 217 } 218 219 ret = ath11k_wmi_send_scan_chan_list_cmd(ar, params); 220 kfree(params); 221 222 return ret; 223 } 224 225 #if defined(__linux__) 226 static void ath11k_copy_regd(struct ieee80211_regdomain *regd_orig, 227 #elif defined(__FreeBSD__) 228 static void ath11k_copy_regd(const struct ieee80211_regdomain *regd_orig, 229 #endif 230 struct ieee80211_regdomain *regd_copy) 231 { 232 u8 i; 233 234 /* The caller should have checked error conditions */ 235 memcpy(regd_copy, regd_orig, sizeof(*regd_orig)); 236 237 for (i = 0; i < regd_orig->n_reg_rules; i++) 238 memcpy(®d_copy->reg_rules[i], ®d_orig->reg_rules[i], 239 sizeof(struct ieee80211_reg_rule)); 240 } 241 242 int ath11k_regd_update(struct ath11k *ar) 243 { 244 #if defined(__linux__) 245 struct ieee80211_regdomain *regd, *regd_copy = NULL; 246 #elif defined(__FreeBSD__) 247 const struct ieee80211_regdomain *regd; 248 struct ieee80211_regdomain *regd_copy = NULL; 249 #endif 250 int ret, regd_len, pdev_id; 251 struct ath11k_base *ab; 252 253 ab = ar->ab; 254 pdev_id = ar->pdev_idx; 255 256 spin_lock_bh(&ab->base_lock); 257 258 /* Prefer the latest regd update over default if it's available */ 259 if (ab->new_regd[pdev_id]) { 260 regd = ab->new_regd[pdev_id]; 261 } else { 262 /* Apply the regd received during init through 263 * WMI_REG_CHAN_LIST_CC event. In case of failure to 264 * receive the regd, initialize with a default world 265 * regulatory. 266 */ 267 if (ab->default_regd[pdev_id]) { 268 regd = ab->default_regd[pdev_id]; 269 } else { 270 ath11k_warn(ab, 271 "failed to receive default regd during init\n"); 272 #if defined(__linux__) 273 regd = (struct ieee80211_regdomain *)&ath11k_world_regd; 274 #elif defined(__FreeBSD__) 275 regd = &ath11k_world_regd; 276 #endif 277 } 278 } 279 280 if (!regd) { 281 ret = -EINVAL; 282 spin_unlock_bh(&ab->base_lock); 283 goto err; 284 } 285 286 regd_len = sizeof(*regd) + (regd->n_reg_rules * 287 sizeof(struct ieee80211_reg_rule)); 288 289 regd_copy = kzalloc(regd_len, GFP_ATOMIC); 290 if (regd_copy) 291 ath11k_copy_regd(regd, regd_copy); 292 293 spin_unlock_bh(&ab->base_lock); 294 295 if (!regd_copy) { 296 ret = -ENOMEM; 297 goto err; 298 } 299 300 ret = regulatory_set_wiphy_regd(ar->hw->wiphy, regd_copy); 301 302 kfree(regd_copy); 303 304 if (ret) 305 goto err; 306 307 return 0; 308 err: 309 ath11k_warn(ab, "failed to perform regd update : %d\n", ret); 310 return ret; 311 } 312 313 static enum nl80211_dfs_regions 314 ath11k_map_fw_dfs_region(enum ath11k_dfs_region dfs_region) 315 { 316 switch (dfs_region) { 317 case ATH11K_DFS_REG_FCC: 318 case ATH11K_DFS_REG_CN: 319 return NL80211_DFS_FCC; 320 case ATH11K_DFS_REG_ETSI: 321 case ATH11K_DFS_REG_KR: 322 return NL80211_DFS_ETSI; 323 case ATH11K_DFS_REG_MKK: 324 case ATH11K_DFS_REG_MKK_N: 325 return NL80211_DFS_JP; 326 default: 327 return NL80211_DFS_UNSET; 328 } 329 } 330 331 static u32 ath11k_map_fw_reg_flags(u16 reg_flags) 332 { 333 u32 flags = 0; 334 335 if (reg_flags & REGULATORY_CHAN_NO_IR) 336 flags = NL80211_RRF_NO_IR; 337 338 if (reg_flags & REGULATORY_CHAN_RADAR) 339 flags |= NL80211_RRF_DFS; 340 341 if (reg_flags & REGULATORY_CHAN_NO_OFDM) 342 flags |= NL80211_RRF_NO_OFDM; 343 344 if (reg_flags & REGULATORY_CHAN_INDOOR_ONLY) 345 flags |= NL80211_RRF_NO_OUTDOOR; 346 347 if (reg_flags & REGULATORY_CHAN_NO_HT40) 348 flags |= NL80211_RRF_NO_HT40; 349 350 if (reg_flags & REGULATORY_CHAN_NO_80MHZ) 351 flags |= NL80211_RRF_NO_80MHZ; 352 353 if (reg_flags & REGULATORY_CHAN_NO_160MHZ) 354 flags |= NL80211_RRF_NO_160MHZ; 355 356 return flags; 357 } 358 359 static u32 ath11k_map_fw_phy_flags(u32 phy_flags) 360 { 361 u32 flags = 0; 362 363 if (phy_flags & ATH11K_REG_PHY_BITMAP_NO11AX) 364 flags |= NL80211_RRF_NO_HE; 365 366 return flags; 367 } 368 369 static bool 370 ath11k_reg_can_intersect(struct ieee80211_reg_rule *rule1, 371 struct ieee80211_reg_rule *rule2) 372 { 373 u32 start_freq1, end_freq1; 374 u32 start_freq2, end_freq2; 375 376 start_freq1 = rule1->freq_range.start_freq_khz; 377 start_freq2 = rule2->freq_range.start_freq_khz; 378 379 end_freq1 = rule1->freq_range.end_freq_khz; 380 end_freq2 = rule2->freq_range.end_freq_khz; 381 382 if ((start_freq1 >= start_freq2 && 383 start_freq1 < end_freq2) || 384 (start_freq2 > start_freq1 && 385 start_freq2 < end_freq1)) 386 return true; 387 388 /* TODO: Should we restrict intersection feasibility 389 * based on min bandwidth of the intersected region also, 390 * say the intersected rule should have a min bandwidth 391 * of 20MHz? 392 */ 393 394 return false; 395 } 396 397 static void ath11k_reg_intersect_rules(struct ieee80211_reg_rule *rule1, 398 struct ieee80211_reg_rule *rule2, 399 struct ieee80211_reg_rule *new_rule) 400 { 401 u32 start_freq1, end_freq1; 402 u32 start_freq2, end_freq2; 403 u32 freq_diff, max_bw; 404 405 start_freq1 = rule1->freq_range.start_freq_khz; 406 start_freq2 = rule2->freq_range.start_freq_khz; 407 408 end_freq1 = rule1->freq_range.end_freq_khz; 409 end_freq2 = rule2->freq_range.end_freq_khz; 410 411 new_rule->freq_range.start_freq_khz = max_t(u32, start_freq1, 412 start_freq2); 413 new_rule->freq_range.end_freq_khz = min_t(u32, end_freq1, end_freq2); 414 415 freq_diff = new_rule->freq_range.end_freq_khz - 416 new_rule->freq_range.start_freq_khz; 417 max_bw = min_t(u32, rule1->freq_range.max_bandwidth_khz, 418 rule2->freq_range.max_bandwidth_khz); 419 new_rule->freq_range.max_bandwidth_khz = min_t(u32, max_bw, freq_diff); 420 421 new_rule->power_rule.max_antenna_gain = 422 min_t(u32, rule1->power_rule.max_antenna_gain, 423 rule2->power_rule.max_antenna_gain); 424 425 new_rule->power_rule.max_eirp = min_t(u32, rule1->power_rule.max_eirp, 426 rule2->power_rule.max_eirp); 427 428 /* Use the flags of both the rules */ 429 new_rule->flags = rule1->flags | rule2->flags; 430 431 if ((rule1->flags & NL80211_RRF_PSD) && (rule2->flags & NL80211_RRF_PSD)) 432 new_rule->psd = min_t(s8, rule1->psd, rule2->psd); 433 else 434 new_rule->flags &= ~NL80211_RRF_PSD; 435 436 /* To be safe, lts use the max cac timeout of both rules */ 437 new_rule->dfs_cac_ms = max_t(u32, rule1->dfs_cac_ms, 438 rule2->dfs_cac_ms); 439 } 440 441 static struct ieee80211_regdomain * 442 ath11k_regd_intersect(struct ieee80211_regdomain *default_regd, 443 struct ieee80211_regdomain *curr_regd) 444 { 445 u8 num_old_regd_rules, num_curr_regd_rules, num_new_regd_rules; 446 struct ieee80211_reg_rule *old_rule, *curr_rule, *new_rule; 447 struct ieee80211_regdomain *new_regd = NULL; 448 u8 i, j, k; 449 450 num_old_regd_rules = default_regd->n_reg_rules; 451 num_curr_regd_rules = curr_regd->n_reg_rules; 452 num_new_regd_rules = 0; 453 454 /* Find the number of intersecting rules to allocate new regd memory */ 455 for (i = 0; i < num_old_regd_rules; i++) { 456 old_rule = default_regd->reg_rules + i; 457 for (j = 0; j < num_curr_regd_rules; j++) { 458 curr_rule = curr_regd->reg_rules + j; 459 460 if (ath11k_reg_can_intersect(old_rule, curr_rule)) 461 num_new_regd_rules++; 462 } 463 } 464 465 if (!num_new_regd_rules) 466 return NULL; 467 468 new_regd = kzalloc(sizeof(*new_regd) + (num_new_regd_rules * 469 sizeof(struct ieee80211_reg_rule)), 470 GFP_ATOMIC); 471 472 if (!new_regd) 473 return NULL; 474 475 /* We set the new country and dfs region directly and only trim 476 * the freq, power, antenna gain by intersecting with the 477 * default regdomain. Also MAX of the dfs cac timeout is selected. 478 */ 479 new_regd->n_reg_rules = num_new_regd_rules; 480 memcpy(new_regd->alpha2, curr_regd->alpha2, sizeof(new_regd->alpha2)); 481 new_regd->dfs_region = curr_regd->dfs_region; 482 new_rule = new_regd->reg_rules; 483 484 for (i = 0, k = 0; i < num_old_regd_rules; i++) { 485 old_rule = default_regd->reg_rules + i; 486 for (j = 0; j < num_curr_regd_rules; j++) { 487 curr_rule = curr_regd->reg_rules + j; 488 489 if (ath11k_reg_can_intersect(old_rule, curr_rule)) 490 ath11k_reg_intersect_rules(old_rule, curr_rule, 491 (new_rule + k++)); 492 } 493 } 494 return new_regd; 495 } 496 497 static const char * 498 ath11k_reg_get_regdom_str(enum nl80211_dfs_regions dfs_region) 499 { 500 switch (dfs_region) { 501 case NL80211_DFS_FCC: 502 return "FCC"; 503 case NL80211_DFS_ETSI: 504 return "ETSI"; 505 case NL80211_DFS_JP: 506 return "JP"; 507 default: 508 return "UNSET"; 509 } 510 } 511 512 static u16 513 ath11k_reg_adjust_bw(u16 start_freq, u16 end_freq, u16 max_bw) 514 { 515 u16 bw; 516 517 if (end_freq <= start_freq) 518 return 0; 519 520 bw = end_freq - start_freq; 521 bw = min_t(u16, bw, max_bw); 522 523 if (bw >= 80 && bw < 160) 524 bw = 80; 525 else if (bw >= 40 && bw < 80) 526 bw = 40; 527 else if (bw >= 20 && bw < 40) 528 bw = 20; 529 else 530 bw = 0; 531 532 return bw; 533 } 534 535 static void 536 ath11k_reg_update_rule(struct ieee80211_reg_rule *reg_rule, u32 start_freq, 537 u32 end_freq, u32 bw, u32 ant_gain, u32 reg_pwr, 538 s8 psd, u32 reg_flags) 539 { 540 reg_rule->freq_range.start_freq_khz = MHZ_TO_KHZ(start_freq); 541 reg_rule->freq_range.end_freq_khz = MHZ_TO_KHZ(end_freq); 542 reg_rule->freq_range.max_bandwidth_khz = MHZ_TO_KHZ(bw); 543 reg_rule->power_rule.max_antenna_gain = DBI_TO_MBI(ant_gain); 544 reg_rule->power_rule.max_eirp = DBM_TO_MBM(reg_pwr); 545 reg_rule->psd = psd; 546 reg_rule->flags = reg_flags; 547 } 548 549 static void 550 ath11k_reg_update_weather_radar_band(struct ath11k_base *ab, 551 struct ieee80211_regdomain *regd, 552 struct cur_reg_rule *reg_rule, 553 u8 *rule_idx, u32 flags, u16 max_bw) 554 { 555 u32 start_freq; 556 u32 end_freq; 557 u16 bw; 558 u8 i; 559 560 i = *rule_idx; 561 562 /* there might be situations when even the input rule must be dropped */ 563 i--; 564 565 /* frequencies below weather radar */ 566 bw = ath11k_reg_adjust_bw(reg_rule->start_freq, 567 ETSI_WEATHER_RADAR_BAND_LOW, max_bw); 568 if (bw > 0) { 569 i++; 570 571 ath11k_reg_update_rule(regd->reg_rules + i, 572 reg_rule->start_freq, 573 ETSI_WEATHER_RADAR_BAND_LOW, bw, 574 reg_rule->ant_gain, reg_rule->reg_power, 575 reg_rule->psd_eirp, 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, reg_rule->start_freq, 580 ETSI_WEATHER_RADAR_BAND_LOW, bw, reg_rule->ant_gain, 581 reg_rule->reg_power, regd->reg_rules[i].dfs_cac_ms, 582 flags); 583 } 584 585 /* weather radar frequencies */ 586 start_freq = max_t(u32, reg_rule->start_freq, 587 ETSI_WEATHER_RADAR_BAND_LOW); 588 end_freq = min_t(u32, reg_rule->end_freq, ETSI_WEATHER_RADAR_BAND_HIGH); 589 590 bw = ath11k_reg_adjust_bw(start_freq, end_freq, max_bw); 591 if (bw > 0) { 592 i++; 593 594 ath11k_reg_update_rule(regd->reg_rules + i, start_freq, 595 end_freq, bw, reg_rule->ant_gain, 596 reg_rule->reg_power, reg_rule->psd_eirp, flags); 597 598 regd->reg_rules[i].dfs_cac_ms = ETSI_WEATHER_RADAR_BAND_CAC_TIMEOUT; 599 600 ath11k_dbg(ab, ATH11K_DBG_REG, 601 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n", 602 i + 1, start_freq, end_freq, bw, 603 reg_rule->ant_gain, reg_rule->reg_power, 604 regd->reg_rules[i].dfs_cac_ms, flags); 605 } 606 607 /* frequencies above weather radar */ 608 bw = ath11k_reg_adjust_bw(ETSI_WEATHER_RADAR_BAND_HIGH, 609 reg_rule->end_freq, max_bw); 610 if (bw > 0) { 611 i++; 612 613 ath11k_reg_update_rule(regd->reg_rules + i, 614 ETSI_WEATHER_RADAR_BAND_HIGH, 615 reg_rule->end_freq, bw, 616 reg_rule->ant_gain, reg_rule->reg_power, 617 reg_rule->psd_eirp, flags); 618 619 ath11k_dbg(ab, ATH11K_DBG_REG, 620 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n", 621 i + 1, ETSI_WEATHER_RADAR_BAND_HIGH, 622 reg_rule->end_freq, bw, reg_rule->ant_gain, 623 reg_rule->reg_power, regd->reg_rules[i].dfs_cac_ms, 624 flags); 625 } 626 627 *rule_idx = i; 628 } 629 630 enum wmi_reg_6ghz_ap_type 631 ath11k_reg_ap_pwr_convert(enum ieee80211_ap_reg_power power_type) 632 { 633 switch (power_type) { 634 case IEEE80211_REG_LPI_AP: 635 return WMI_REG_INDOOR_AP; 636 case IEEE80211_REG_SP_AP: 637 return WMI_REG_STANDARD_POWER_AP; 638 case IEEE80211_REG_VLP_AP: 639 return WMI_REG_VERY_LOW_POWER_AP; 640 default: 641 return WMI_REG_MAX_AP_TYPE; 642 } 643 } 644 645 struct ieee80211_regdomain * 646 ath11k_reg_build_regd(struct ath11k_base *ab, 647 struct cur_regulatory_info *reg_info, bool intersect, 648 enum wmi_vdev_type vdev_type, 649 enum ieee80211_ap_reg_power power_type) 650 { 651 struct ieee80211_regdomain *tmp_regd, *default_regd, *new_regd = NULL; 652 struct cur_reg_rule *reg_rule, *reg_rule_6ghz; 653 u8 i = 0, j = 0, k = 0; 654 u8 num_rules; 655 u16 max_bw; 656 u32 flags, reg_6ghz_number, max_bw_6ghz; 657 char alpha2[3]; 658 659 num_rules = reg_info->num_5ghz_reg_rules + reg_info->num_2ghz_reg_rules; 660 661 if (reg_info->is_ext_reg_event) { 662 if (vdev_type == WMI_VDEV_TYPE_STA) { 663 enum wmi_reg_6ghz_ap_type ap_type; 664 665 ap_type = ath11k_reg_ap_pwr_convert(power_type); 666 667 if (ap_type == WMI_REG_MAX_AP_TYPE) 668 ap_type = WMI_REG_INDOOR_AP; 669 670 reg_6ghz_number = reg_info->num_6ghz_rules_client 671 [ap_type][WMI_REG_DEFAULT_CLIENT]; 672 673 if (reg_6ghz_number == 0) { 674 ap_type = WMI_REG_INDOOR_AP; 675 reg_6ghz_number = reg_info->num_6ghz_rules_client 676 [ap_type][WMI_REG_DEFAULT_CLIENT]; 677 } 678 679 reg_rule_6ghz = reg_info->reg_rules_6ghz_client_ptr 680 [ap_type][WMI_REG_DEFAULT_CLIENT]; 681 max_bw_6ghz = reg_info->max_bw_6ghz_client 682 [ap_type][WMI_REG_DEFAULT_CLIENT]; 683 } else { 684 reg_6ghz_number = reg_info->num_6ghz_rules_ap[WMI_REG_INDOOR_AP]; 685 reg_rule_6ghz = 686 reg_info->reg_rules_6ghz_ap_ptr[WMI_REG_INDOOR_AP]; 687 max_bw_6ghz = reg_info->max_bw_6ghz_ap[WMI_REG_INDOOR_AP]; 688 } 689 690 num_rules += reg_6ghz_number; 691 } 692 693 if (!num_rules) 694 goto ret; 695 696 /* Add max additional rules to accommodate weather radar band */ 697 if (reg_info->dfs_region == ATH11K_DFS_REG_ETSI) 698 num_rules += 2; 699 700 tmp_regd = kzalloc(sizeof(*tmp_regd) + 701 (num_rules * sizeof(struct ieee80211_reg_rule)), 702 GFP_ATOMIC); 703 if (!tmp_regd) 704 goto ret; 705 706 memcpy(tmp_regd->alpha2, reg_info->alpha2, REG_ALPHA2_LEN + 1); 707 memcpy(alpha2, reg_info->alpha2, REG_ALPHA2_LEN + 1); 708 alpha2[2] = '\0'; 709 tmp_regd->dfs_region = ath11k_map_fw_dfs_region(reg_info->dfs_region); 710 711 ath11k_dbg(ab, ATH11K_DBG_REG, 712 "Country %s, CFG Regdomain %s FW Regdomain %d, num_reg_rules %d\n", 713 alpha2, ath11k_reg_get_regdom_str(tmp_regd->dfs_region), 714 reg_info->dfs_region, num_rules); 715 /* Update reg_rules[] below. Firmware is expected to 716 * send these rules in order(2 GHz rules first and then 5 GHz) 717 */ 718 for (; i < num_rules; i++) { 719 if (reg_info->num_2ghz_reg_rules && 720 (i < reg_info->num_2ghz_reg_rules)) { 721 reg_rule = reg_info->reg_rules_2ghz_ptr + i; 722 max_bw = min_t(u16, reg_rule->max_bw, 723 reg_info->max_bw_2ghz); 724 flags = 0; 725 } else if (reg_info->num_5ghz_reg_rules && 726 (j < reg_info->num_5ghz_reg_rules)) { 727 reg_rule = reg_info->reg_rules_5ghz_ptr + j++; 728 max_bw = min_t(u16, reg_rule->max_bw, 729 reg_info->max_bw_5ghz); 730 731 /* FW doesn't pass NL80211_RRF_AUTO_BW flag for 732 * BW Auto correction, we can enable this by default 733 * for all 5G rules here. The regulatory core performs 734 * BW correction if required and applies flags as 735 * per other BW rule flags we pass from here 736 */ 737 flags = NL80211_RRF_AUTO_BW; 738 } else if (reg_info->is_ext_reg_event && reg_6ghz_number && 739 k < reg_6ghz_number) { 740 reg_rule = reg_rule_6ghz + k++; 741 max_bw = min_t(u16, reg_rule->max_bw, max_bw_6ghz); 742 flags = NL80211_RRF_AUTO_BW; 743 if (reg_rule->psd_flag) 744 flags |= NL80211_RRF_PSD; 745 } else { 746 break; 747 } 748 749 flags |= ath11k_map_fw_reg_flags(reg_rule->flags); 750 flags |= ath11k_map_fw_phy_flags(reg_info->phybitmap); 751 752 ath11k_reg_update_rule(tmp_regd->reg_rules + i, 753 reg_rule->start_freq, 754 reg_rule->end_freq, max_bw, 755 reg_rule->ant_gain, reg_rule->reg_power, 756 reg_rule->psd_eirp, flags); 757 758 /* Update dfs cac timeout if the dfs domain is ETSI and the 759 * new rule covers weather radar band. 760 * Default value of '0' corresponds to 60s timeout, so no 761 * need to update that for other rules. 762 */ 763 if (flags & NL80211_RRF_DFS && 764 reg_info->dfs_region == ATH11K_DFS_REG_ETSI && 765 (reg_rule->end_freq > ETSI_WEATHER_RADAR_BAND_LOW && 766 reg_rule->start_freq < ETSI_WEATHER_RADAR_BAND_HIGH)){ 767 ath11k_reg_update_weather_radar_band(ab, tmp_regd, 768 reg_rule, &i, 769 flags, max_bw); 770 continue; 771 } 772 773 if (reg_info->is_ext_reg_event) { 774 ath11k_dbg(ab, ATH11K_DBG_REG, 775 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d) (%d, %d)\n", 776 i + 1, reg_rule->start_freq, reg_rule->end_freq, 777 max_bw, reg_rule->ant_gain, reg_rule->reg_power, 778 tmp_regd->reg_rules[i].dfs_cac_ms, flags, 779 reg_rule->psd_flag, reg_rule->psd_eirp); 780 } else { 781 ath11k_dbg(ab, ATH11K_DBG_REG, 782 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n", 783 i + 1, reg_rule->start_freq, reg_rule->end_freq, 784 max_bw, reg_rule->ant_gain, reg_rule->reg_power, 785 tmp_regd->reg_rules[i].dfs_cac_ms, 786 flags); 787 } 788 } 789 790 tmp_regd->n_reg_rules = i; 791 792 if (intersect) { 793 default_regd = ab->default_regd[reg_info->phy_id]; 794 795 /* Get a new regd by intersecting the received regd with 796 * our default regd. 797 */ 798 new_regd = ath11k_regd_intersect(default_regd, tmp_regd); 799 kfree(tmp_regd); 800 if (!new_regd) { 801 ath11k_warn(ab, "Unable to create intersected regdomain\n"); 802 goto ret; 803 } 804 } else { 805 new_regd = tmp_regd; 806 } 807 808 ret: 809 return new_regd; 810 } 811 812 void ath11k_regd_update_chan_list_work(struct work_struct *work) 813 { 814 struct ath11k *ar = container_of(work, struct ath11k, 815 channel_update_work); 816 struct scan_chan_list_params *params; 817 struct list_head local_update_list; 818 int left; 819 820 INIT_LIST_HEAD(&local_update_list); 821 822 spin_lock_bh(&ar->data_lock); 823 list_splice_tail_init(&ar->channel_update_queue, &local_update_list); 824 spin_unlock_bh(&ar->data_lock); 825 826 while ((params = list_first_entry_or_null(&local_update_list, 827 struct scan_chan_list_params, 828 list))) { 829 if (ar->state_11d != ATH11K_11D_IDLE) { 830 left = wait_for_completion_timeout(&ar->completed_11d_scan, 831 ATH11K_SCAN_TIMEOUT_HZ); 832 if (!left) { 833 ath11k_dbg(ar->ab, ATH11K_DBG_REG, 834 "failed to receive 11d scan complete: timed out\n"); 835 ar->state_11d = ATH11K_11D_IDLE; 836 } 837 838 ath11k_dbg(ar->ab, ATH11K_DBG_REG, 839 "reg 11d scan wait left time %d\n", left); 840 } 841 842 if ((ar->scan.state == ATH11K_SCAN_STARTING || 843 ar->scan.state == ATH11K_SCAN_RUNNING)) { 844 left = wait_for_completion_timeout(&ar->scan.completed, 845 ATH11K_SCAN_TIMEOUT_HZ); 846 if (!left) 847 ath11k_dbg(ar->ab, ATH11K_DBG_REG, 848 "failed to receive hw scan complete: timed out\n"); 849 850 ath11k_dbg(ar->ab, ATH11K_DBG_REG, 851 "reg hw scan wait left time %d\n", left); 852 } 853 854 ath11k_wmi_send_scan_chan_list_cmd(ar, params); 855 list_del(¶ms->list); 856 kfree(params); 857 } 858 } 859 860 static bool ath11k_reg_is_world_alpha(char *alpha) 861 { 862 if (alpha[0] == '0' && alpha[1] == '0') 863 return true; 864 865 if (alpha[0] == 'n' && alpha[1] == 'a') 866 return true; 867 868 return false; 869 } 870 871 static enum wmi_vdev_type ath11k_reg_get_ar_vdev_type(struct ath11k *ar) 872 { 873 struct ath11k_vif *arvif; 874 875 /* Currently each struct ath11k maps to one struct ieee80211_hw/wiphy 876 * and one struct ieee80211_regdomain, so it could only store one group 877 * reg rules. It means multi-interface concurrency in the same ath11k is 878 * not support for the regdomain. So get the vdev type of the first entry 879 * now. After concurrency support for the regdomain, this should change. 880 */ 881 arvif = list_first_entry_or_null(&ar->arvifs, struct ath11k_vif, list); 882 if (arvif) 883 return arvif->vdev_type; 884 885 return WMI_VDEV_TYPE_UNSPEC; 886 } 887 888 int ath11k_reg_handle_chan_list(struct ath11k_base *ab, 889 struct cur_regulatory_info *reg_info, 890 enum ieee80211_ap_reg_power power_type) 891 { 892 struct ieee80211_regdomain *regd; 893 bool intersect = false; 894 int pdev_idx; 895 struct ath11k *ar; 896 enum wmi_vdev_type vdev_type; 897 898 ath11k_dbg(ab, ATH11K_DBG_WMI, "event reg handle chan list"); 899 900 if (reg_info->status_code != REG_SET_CC_STATUS_PASS) { 901 /* In case of failure to set the requested ctry, 902 * fw retains the current regd. We print a failure info 903 * and return from here. 904 */ 905 ath11k_warn(ab, "Failed to set the requested Country regulatory setting\n"); 906 return -EINVAL; 907 } 908 909 pdev_idx = reg_info->phy_id; 910 911 /* Avoid default reg rule updates sent during FW recovery if 912 * it is already available 913 */ 914 spin_lock_bh(&ab->base_lock); 915 if (test_bit(ATH11K_FLAG_RECOVERY, &ab->dev_flags) && 916 ab->default_regd[pdev_idx]) { 917 spin_unlock_bh(&ab->base_lock); 918 goto retfail; 919 } 920 spin_unlock_bh(&ab->base_lock); 921 922 if (pdev_idx >= ab->num_radios) { 923 /* Process the event for phy0 only if single_pdev_only 924 * is true. If pdev_idx is valid but not 0, discard the 925 * event. Otherwise, it goes to fallback. In either case 926 * ath11k_reg_reset_info() needs to be called to avoid 927 * memory leak issue. 928 */ 929 ath11k_reg_reset_info(reg_info); 930 931 if (ab->hw_params.single_pdev_only && 932 pdev_idx < ab->hw_params.num_rxdma_per_pdev) 933 return 0; 934 goto fallback; 935 } 936 937 /* Avoid multiple overwrites to default regd, during core 938 * stop-start after mac registration. 939 */ 940 if (ab->default_regd[pdev_idx] && !ab->new_regd[pdev_idx] && 941 !memcmp((char *)ab->default_regd[pdev_idx]->alpha2, 942 (char *)reg_info->alpha2, 2)) 943 goto retfail; 944 945 /* Intersect new rules with default regd if a new country setting was 946 * requested, i.e a default regd was already set during initialization 947 * and the regd coming from this event has a valid country info. 948 */ 949 if (ab->default_regd[pdev_idx] && 950 !ath11k_reg_is_world_alpha((char *) 951 ab->default_regd[pdev_idx]->alpha2) && 952 !ath11k_reg_is_world_alpha((char *)reg_info->alpha2)) 953 intersect = true; 954 955 ar = ab->pdevs[pdev_idx].ar; 956 vdev_type = ath11k_reg_get_ar_vdev_type(ar); 957 958 ath11k_dbg(ab, ATH11K_DBG_WMI, 959 "wmi handle chan list power type %d vdev type %d intersect %d\n", 960 power_type, vdev_type, intersect); 961 962 regd = ath11k_reg_build_regd(ab, reg_info, intersect, vdev_type, power_type); 963 if (!regd) { 964 ath11k_warn(ab, "failed to build regd from reg_info\n"); 965 goto fallback; 966 } 967 968 if (power_type == IEEE80211_REG_UNSET_AP) { 969 ath11k_reg_reset_info(&ab->reg_info_store[pdev_idx]); 970 ab->reg_info_store[pdev_idx] = *reg_info; 971 } 972 973 spin_lock_bh(&ab->base_lock); 974 if (ab->default_regd[pdev_idx]) { 975 /* The initial rules from FW after WMI Init is to build 976 * the default regd. From then on, any rules updated for 977 * the pdev could be due to user reg changes. 978 * Free previously built regd before assigning the newly 979 * generated regd to ar. NULL pointer handling will be 980 * taken care by kfree itself. 981 */ 982 ar = ab->pdevs[pdev_idx].ar; 983 kfree(ab->new_regd[pdev_idx]); 984 ab->new_regd[pdev_idx] = regd; 985 queue_work(ab->workqueue, &ar->regd_update_work); 986 } else { 987 /* This regd would be applied during mac registration and is 988 * held constant throughout for regd intersection purpose 989 */ 990 ab->default_regd[pdev_idx] = regd; 991 } 992 ab->dfs_region = reg_info->dfs_region; 993 spin_unlock_bh(&ab->base_lock); 994 995 return 0; 996 997 fallback: 998 /* Fallback to older reg (by sending previous country setting 999 * again if fw has succeeded and we failed to process here. 1000 * The Regdomain should be uniform across driver and fw. Since the 1001 * FW has processed the command and sent a success status, we expect 1002 * this function to succeed as well. If it doesn't, CTRY needs to be 1003 * reverted at the fw and the old SCAN_CHAN_LIST cmd needs to be sent. 1004 */ 1005 /* TODO: This is rare, but still should also be handled */ 1006 WARN_ON(1); 1007 1008 retfail: 1009 1010 return -EINVAL; 1011 } 1012 1013 void ath11k_regd_update_work(struct work_struct *work) 1014 { 1015 struct ath11k *ar = container_of(work, struct ath11k, 1016 regd_update_work); 1017 int ret; 1018 1019 ret = ath11k_regd_update(ar); 1020 if (ret) { 1021 /* Firmware has already moved to the new regd. We need 1022 * to maintain channel consistency across FW, Host driver 1023 * and userspace. Hence as a fallback mechanism we can set 1024 * the prev or default country code to the firmware. 1025 */ 1026 /* TODO: Implement Fallback Mechanism */ 1027 } 1028 } 1029 1030 void ath11k_reg_init(struct ath11k *ar) 1031 { 1032 ar->hw->wiphy->regulatory_flags = REGULATORY_WIPHY_SELF_MANAGED; 1033 ar->hw->wiphy->flags |= WIPHY_FLAG_NOTIFY_REGDOM_BY_DRIVER; 1034 ar->hw->wiphy->reg_notifier = ath11k_reg_notifier; 1035 } 1036 1037 void ath11k_reg_reset_info(struct cur_regulatory_info *reg_info) 1038 { 1039 int i, j; 1040 1041 if (!reg_info) 1042 return; 1043 1044 kfree(reg_info->reg_rules_2ghz_ptr); 1045 kfree(reg_info->reg_rules_5ghz_ptr); 1046 1047 for (i = 0; i < WMI_REG_CURRENT_MAX_AP_TYPE; i++) { 1048 kfree(reg_info->reg_rules_6ghz_ap_ptr[i]); 1049 1050 for (j = 0; j < WMI_REG_MAX_CLIENT_TYPE; j++) 1051 kfree(reg_info->reg_rules_6ghz_client_ptr[i][j]); 1052 } 1053 1054 memset(reg_info, 0, sizeof(*reg_info)); 1055 } 1056 1057 void ath11k_reg_free(struct ath11k_base *ab) 1058 { 1059 int i; 1060 1061 for (i = 0; i < ab->num_radios; i++) 1062 ath11k_reg_reset_info(&ab->reg_info_store[i]); 1063 1064 kfree(ab->reg_info_store); 1065 ab->reg_info_store = NULL; 1066 1067 for (i = 0; i < ab->hw_params.max_radios; i++) { 1068 kfree(ab->default_regd[i]); 1069 kfree(ab->new_regd[i]); 1070 } 1071 } 1072 1073 int ath11k_reg_set_cc(struct ath11k *ar) 1074 { 1075 struct wmi_set_current_country_params set_current_param = {}; 1076 1077 memcpy(&set_current_param.alpha2, ar->alpha2, 2); 1078 return ath11k_wmi_send_set_current_country_cmd(ar, &set_current_param); 1079 } 1080