1 // SPDX-License-Identifier: BSD-3-Clause-Clear 2 /* 3 * Copyright (c) 2018-2019 The Linux Foundation. All rights reserved. 4 * Copyright (c) 2021-2023 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 wmi_set_current_country_params set_current_param = {}; 53 struct ath11k *ar = hw->priv; 54 int ret; 55 56 ath11k_dbg(ar->ab, ATH11K_DBG_REG, 57 "Regulatory Notification received for %s\n", wiphy_name(wiphy)); 58 59 /* Currently supporting only General User Hints. Cell base user 60 * hints to be handled later. 61 * Hints from other sources like Core, Beacons are not expected for 62 * self managed wiphy's 63 */ 64 if (!(request->initiator == NL80211_REGDOM_SET_BY_USER && 65 request->user_reg_hint_type == NL80211_USER_REG_HINT_USER)) { 66 ath11k_warn(ar->ab, "Unexpected Regulatory event for this wiphy\n"); 67 return; 68 } 69 70 if (!IS_ENABLED(CONFIG_ATH_REG_DYNAMIC_USER_REG_HINTS)) { 71 ath11k_dbg(ar->ab, ATH11K_DBG_REG, 72 "Country Setting is not allowed\n"); 73 return; 74 } 75 76 if (!ath11k_regdom_changes(ar, request->alpha2)) { 77 ath11k_dbg(ar->ab, ATH11K_DBG_REG, "Country is already set\n"); 78 return; 79 } 80 81 /* Set the country code to the firmware and will receive 82 * the WMI_REG_CHAN_LIST_CC EVENT for updating the 83 * reg info 84 */ 85 if (ar->ab->hw_params.current_cc_support) { 86 memcpy(&set_current_param.alpha2, request->alpha2, 2); 87 memcpy(&ar->alpha2, &set_current_param.alpha2, 2); 88 ret = ath11k_wmi_send_set_current_country_cmd(ar, &set_current_param); 89 if (ret) 90 ath11k_warn(ar->ab, 91 "failed set current country code: %d\n", ret); 92 } else { 93 init_country_param.flags = ALPHA_IS_SET; 94 memcpy(&init_country_param.cc_info.alpha2, request->alpha2, 2); 95 init_country_param.cc_info.alpha2[2] = 0; 96 97 ret = ath11k_wmi_send_init_country_cmd(ar, init_country_param); 98 if (ret) 99 ath11k_warn(ar->ab, 100 "INIT Country code set to fw failed : %d\n", ret); 101 } 102 103 ath11k_mac_11d_scan_stop(ar); 104 ar->regdom_set_by_user = true; 105 } 106 107 int ath11k_reg_update_chan_list(struct ath11k *ar, bool wait) 108 { 109 struct ieee80211_supported_band **bands; 110 struct scan_chan_list_params *params; 111 struct ieee80211_channel *channel; 112 struct ieee80211_hw *hw = ar->hw; 113 struct channel_param *ch; 114 enum nl80211_band band; 115 int num_channels = 0; 116 int i, ret, left; 117 118 if (wait && ar->state_11d != ATH11K_11D_IDLE) { 119 left = wait_for_completion_timeout(&ar->completed_11d_scan, 120 ATH11K_SCAN_TIMEOUT_HZ); 121 if (!left) { 122 ath11k_dbg(ar->ab, ATH11K_DBG_REG, 123 "failed to receive 11d scan complete: timed out\n"); 124 ar->state_11d = ATH11K_11D_IDLE; 125 } 126 ath11k_dbg(ar->ab, ATH11K_DBG_REG, 127 "11d scan wait left time %d\n", left); 128 } 129 130 if (wait && 131 (ar->scan.state == ATH11K_SCAN_STARTING || 132 ar->scan.state == ATH11K_SCAN_RUNNING)) { 133 left = wait_for_completion_timeout(&ar->scan.completed, 134 ATH11K_SCAN_TIMEOUT_HZ); 135 if (!left) 136 ath11k_dbg(ar->ab, ATH11K_DBG_REG, 137 "failed to receive hw scan complete: timed out\n"); 138 139 ath11k_dbg(ar->ab, ATH11K_DBG_REG, 140 "hw scan wait left time %d\n", left); 141 } 142 143 if (ar->state == ATH11K_STATE_RESTARTING) 144 return 0; 145 146 bands = hw->wiphy->bands; 147 for (band = 0; band < NUM_NL80211_BANDS; band++) { 148 if (!bands[band]) 149 continue; 150 151 for (i = 0; i < bands[band]->n_channels; i++) { 152 if (bands[band]->channels[i].flags & 153 IEEE80211_CHAN_DISABLED) 154 continue; 155 156 num_channels++; 157 } 158 } 159 160 if (WARN_ON(!num_channels)) 161 return -EINVAL; 162 163 params = kzalloc(struct_size(params, ch_param, num_channels), 164 GFP_KERNEL); 165 if (!params) 166 return -ENOMEM; 167 168 params->pdev_id = ar->pdev->pdev_id; 169 params->nallchans = num_channels; 170 171 ch = params->ch_param; 172 173 for (band = 0; band < NUM_NL80211_BANDS; band++) { 174 if (!bands[band]) 175 continue; 176 177 for (i = 0; i < bands[band]->n_channels; i++) { 178 channel = &bands[band]->channels[i]; 179 180 if (channel->flags & IEEE80211_CHAN_DISABLED) 181 continue; 182 183 /* TODO: Set to true/false based on some condition? */ 184 ch->allow_ht = true; 185 ch->allow_vht = true; 186 ch->allow_he = true; 187 188 ch->dfs_set = 189 !!(channel->flags & IEEE80211_CHAN_RADAR); 190 ch->is_chan_passive = !!(channel->flags & 191 IEEE80211_CHAN_NO_IR); 192 ch->is_chan_passive |= ch->dfs_set; 193 ch->mhz = channel->center_freq; 194 ch->cfreq1 = channel->center_freq; 195 ch->minpower = 0; 196 ch->maxpower = channel->max_power * 2; 197 ch->maxregpower = channel->max_reg_power * 2; 198 ch->antennamax = channel->max_antenna_gain * 2; 199 200 /* TODO: Use appropriate phymodes */ 201 if (channel->band == NL80211_BAND_2GHZ) 202 ch->phy_mode = MODE_11G; 203 else 204 ch->phy_mode = MODE_11A; 205 206 if (channel->band == NL80211_BAND_6GHZ && 207 cfg80211_channel_is_psc(channel)) 208 ch->psc_channel = true; 209 210 ath11k_dbg(ar->ab, ATH11K_DBG_WMI, 211 "mac channel [%d/%d] freq %d maxpower %d regpower %d antenna %d mode %d\n", 212 i, params->nallchans, 213 ch->mhz, ch->maxpower, ch->maxregpower, 214 ch->antennamax, ch->phy_mode); 215 216 ch++; 217 /* TODO: use quarrter/half rate, cfreq12, dfs_cfreq2 218 * set_agile, reg_class_idx 219 */ 220 } 221 } 222 223 ret = ath11k_wmi_send_scan_chan_list_cmd(ar, params); 224 kfree(params); 225 226 return ret; 227 } 228 229 static void ath11k_copy_regd(struct ieee80211_regdomain *regd_orig, 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 struct ieee80211_regdomain *regd, *regd_copy = NULL; 245 int ret, regd_len, pdev_id; 246 struct ath11k_base *ab; 247 248 ab = ar->ab; 249 pdev_id = ar->pdev_idx; 250 251 spin_lock_bh(&ab->base_lock); 252 253 /* Prefer the latest regd update over default if it's available */ 254 if (ab->new_regd[pdev_id]) { 255 regd = ab->new_regd[pdev_id]; 256 } else { 257 /* Apply the regd received during init through 258 * WMI_REG_CHAN_LIST_CC event. In case of failure to 259 * receive the regd, initialize with a default world 260 * regulatory. 261 */ 262 if (ab->default_regd[pdev_id]) { 263 regd = ab->default_regd[pdev_id]; 264 } else { 265 ath11k_warn(ab, 266 "failed to receive default regd during init\n"); 267 regd = (struct ieee80211_regdomain *)&ath11k_world_regd; 268 } 269 } 270 271 if (!regd) { 272 ret = -EINVAL; 273 spin_unlock_bh(&ab->base_lock); 274 goto err; 275 } 276 277 regd_len = sizeof(*regd) + (regd->n_reg_rules * 278 sizeof(struct ieee80211_reg_rule)); 279 280 regd_copy = kzalloc(regd_len, GFP_ATOMIC); 281 if (regd_copy) 282 ath11k_copy_regd(regd, regd_copy); 283 284 spin_unlock_bh(&ab->base_lock); 285 286 if (!regd_copy) { 287 ret = -ENOMEM; 288 goto err; 289 } 290 291 ret = regulatory_set_wiphy_regd(ar->hw->wiphy, regd_copy); 292 293 kfree(regd_copy); 294 295 if (ret) 296 goto err; 297 298 if (ar->state == ATH11K_STATE_ON) { 299 ret = ath11k_reg_update_chan_list(ar, true); 300 if (ret) 301 goto err; 302 } 303 304 return 0; 305 err: 306 ath11k_warn(ab, "failed to perform regd update : %d\n", ret); 307 return ret; 308 } 309 310 static enum nl80211_dfs_regions 311 ath11k_map_fw_dfs_region(enum ath11k_dfs_region dfs_region) 312 { 313 switch (dfs_region) { 314 case ATH11K_DFS_REG_FCC: 315 case ATH11K_DFS_REG_CN: 316 return NL80211_DFS_FCC; 317 case ATH11K_DFS_REG_ETSI: 318 case ATH11K_DFS_REG_KR: 319 return NL80211_DFS_ETSI; 320 case ATH11K_DFS_REG_MKK: 321 case ATH11K_DFS_REG_MKK_N: 322 return NL80211_DFS_JP; 323 default: 324 return NL80211_DFS_UNSET; 325 } 326 } 327 328 static u32 ath11k_map_fw_reg_flags(u16 reg_flags) 329 { 330 u32 flags = 0; 331 332 if (reg_flags & REGULATORY_CHAN_NO_IR) 333 flags = NL80211_RRF_NO_IR; 334 335 if (reg_flags & REGULATORY_CHAN_RADAR) 336 flags |= NL80211_RRF_DFS; 337 338 if (reg_flags & REGULATORY_CHAN_NO_OFDM) 339 flags |= NL80211_RRF_NO_OFDM; 340 341 if (reg_flags & REGULATORY_CHAN_INDOOR_ONLY) 342 flags |= NL80211_RRF_NO_OUTDOOR; 343 344 if (reg_flags & REGULATORY_CHAN_NO_HT40) 345 flags |= NL80211_RRF_NO_HT40; 346 347 if (reg_flags & REGULATORY_CHAN_NO_80MHZ) 348 flags |= NL80211_RRF_NO_80MHZ; 349 350 if (reg_flags & REGULATORY_CHAN_NO_160MHZ) 351 flags |= NL80211_RRF_NO_160MHZ; 352 353 return flags; 354 } 355 356 static u32 ath11k_map_fw_phy_flags(u32 phy_flags) 357 { 358 u32 flags = 0; 359 360 if (phy_flags & ATH11K_REG_PHY_BITMAP_NO11AX) 361 flags |= NL80211_RRF_NO_HE; 362 363 return flags; 364 } 365 366 static bool 367 ath11k_reg_can_intersect(struct ieee80211_reg_rule *rule1, 368 struct ieee80211_reg_rule *rule2) 369 { 370 u32 start_freq1, end_freq1; 371 u32 start_freq2, end_freq2; 372 373 start_freq1 = rule1->freq_range.start_freq_khz; 374 start_freq2 = rule2->freq_range.start_freq_khz; 375 376 end_freq1 = rule1->freq_range.end_freq_khz; 377 end_freq2 = rule2->freq_range.end_freq_khz; 378 379 if ((start_freq1 >= start_freq2 && 380 start_freq1 < end_freq2) || 381 (start_freq2 > start_freq1 && 382 start_freq2 < end_freq1)) 383 return true; 384 385 /* TODO: Should we restrict intersection feasibility 386 * based on min bandwidth of the intersected region also, 387 * say the intersected rule should have a min bandwidth 388 * of 20MHz? 389 */ 390 391 return false; 392 } 393 394 static void ath11k_reg_intersect_rules(struct ieee80211_reg_rule *rule1, 395 struct ieee80211_reg_rule *rule2, 396 struct ieee80211_reg_rule *new_rule) 397 { 398 u32 start_freq1, end_freq1; 399 u32 start_freq2, end_freq2; 400 u32 freq_diff, max_bw; 401 402 start_freq1 = rule1->freq_range.start_freq_khz; 403 start_freq2 = rule2->freq_range.start_freq_khz; 404 405 end_freq1 = rule1->freq_range.end_freq_khz; 406 end_freq2 = rule2->freq_range.end_freq_khz; 407 408 new_rule->freq_range.start_freq_khz = max_t(u32, start_freq1, 409 start_freq2); 410 new_rule->freq_range.end_freq_khz = min_t(u32, end_freq1, end_freq2); 411 412 freq_diff = new_rule->freq_range.end_freq_khz - 413 new_rule->freq_range.start_freq_khz; 414 max_bw = min_t(u32, rule1->freq_range.max_bandwidth_khz, 415 rule2->freq_range.max_bandwidth_khz); 416 new_rule->freq_range.max_bandwidth_khz = min_t(u32, max_bw, freq_diff); 417 418 new_rule->power_rule.max_antenna_gain = 419 min_t(u32, rule1->power_rule.max_antenna_gain, 420 rule2->power_rule.max_antenna_gain); 421 422 new_rule->power_rule.max_eirp = min_t(u32, rule1->power_rule.max_eirp, 423 rule2->power_rule.max_eirp); 424 425 /* Use the flags of both the rules */ 426 new_rule->flags = rule1->flags | rule2->flags; 427 428 /* To be safe, lts use the max cac timeout of both rules */ 429 new_rule->dfs_cac_ms = max_t(u32, rule1->dfs_cac_ms, 430 rule2->dfs_cac_ms); 431 } 432 433 static struct ieee80211_regdomain * 434 ath11k_regd_intersect(struct ieee80211_regdomain *default_regd, 435 struct ieee80211_regdomain *curr_regd) 436 { 437 u8 num_old_regd_rules, num_curr_regd_rules, num_new_regd_rules; 438 struct ieee80211_reg_rule *old_rule, *curr_rule, *new_rule; 439 struct ieee80211_regdomain *new_regd = NULL; 440 u8 i, j, k; 441 442 num_old_regd_rules = default_regd->n_reg_rules; 443 num_curr_regd_rules = curr_regd->n_reg_rules; 444 num_new_regd_rules = 0; 445 446 /* Find the number of intersecting rules to allocate new regd memory */ 447 for (i = 0; i < num_old_regd_rules; i++) { 448 old_rule = default_regd->reg_rules + i; 449 for (j = 0; j < num_curr_regd_rules; j++) { 450 curr_rule = curr_regd->reg_rules + j; 451 452 if (ath11k_reg_can_intersect(old_rule, curr_rule)) 453 num_new_regd_rules++; 454 } 455 } 456 457 if (!num_new_regd_rules) 458 return NULL; 459 460 new_regd = kzalloc(sizeof(*new_regd) + (num_new_regd_rules * 461 sizeof(struct ieee80211_reg_rule)), 462 GFP_ATOMIC); 463 464 if (!new_regd) 465 return NULL; 466 467 /* We set the new country and dfs region directly and only trim 468 * the freq, power, antenna gain by intersecting with the 469 * default regdomain. Also MAX of the dfs cac timeout is selected. 470 */ 471 new_regd->n_reg_rules = num_new_regd_rules; 472 memcpy(new_regd->alpha2, curr_regd->alpha2, sizeof(new_regd->alpha2)); 473 new_regd->dfs_region = curr_regd->dfs_region; 474 new_rule = new_regd->reg_rules; 475 476 for (i = 0, k = 0; i < num_old_regd_rules; i++) { 477 old_rule = default_regd->reg_rules + i; 478 for (j = 0; j < num_curr_regd_rules; j++) { 479 curr_rule = curr_regd->reg_rules + j; 480 481 if (ath11k_reg_can_intersect(old_rule, curr_rule)) 482 ath11k_reg_intersect_rules(old_rule, curr_rule, 483 (new_rule + k++)); 484 } 485 } 486 return new_regd; 487 } 488 489 static const char * 490 ath11k_reg_get_regdom_str(enum nl80211_dfs_regions dfs_region) 491 { 492 switch (dfs_region) { 493 case NL80211_DFS_FCC: 494 return "FCC"; 495 case NL80211_DFS_ETSI: 496 return "ETSI"; 497 case NL80211_DFS_JP: 498 return "JP"; 499 default: 500 return "UNSET"; 501 } 502 } 503 504 static u16 505 ath11k_reg_adjust_bw(u16 start_freq, u16 end_freq, u16 max_bw) 506 { 507 u16 bw; 508 509 if (end_freq <= start_freq) 510 return 0; 511 512 bw = end_freq - start_freq; 513 bw = min_t(u16, bw, max_bw); 514 515 if (bw >= 80 && bw < 160) 516 bw = 80; 517 else if (bw >= 40 && bw < 80) 518 bw = 40; 519 else if (bw >= 20 && bw < 40) 520 bw = 20; 521 else 522 bw = 0; 523 524 return bw; 525 } 526 527 static void 528 ath11k_reg_update_rule(struct ieee80211_reg_rule *reg_rule, u32 start_freq, 529 u32 end_freq, u32 bw, u32 ant_gain, u32 reg_pwr, 530 u32 reg_flags) 531 { 532 reg_rule->freq_range.start_freq_khz = MHZ_TO_KHZ(start_freq); 533 reg_rule->freq_range.end_freq_khz = MHZ_TO_KHZ(end_freq); 534 reg_rule->freq_range.max_bandwidth_khz = MHZ_TO_KHZ(bw); 535 reg_rule->power_rule.max_antenna_gain = DBI_TO_MBI(ant_gain); 536 reg_rule->power_rule.max_eirp = DBM_TO_MBM(reg_pwr); 537 reg_rule->flags = reg_flags; 538 } 539 540 static void 541 ath11k_reg_update_weather_radar_band(struct ath11k_base *ab, 542 struct ieee80211_regdomain *regd, 543 struct cur_reg_rule *reg_rule, 544 u8 *rule_idx, u32 flags, u16 max_bw) 545 { 546 u32 start_freq; 547 u32 end_freq; 548 u16 bw; 549 u8 i; 550 551 i = *rule_idx; 552 553 /* there might be situations when even the input rule must be dropped */ 554 i--; 555 556 /* frequencies below weather radar */ 557 bw = ath11k_reg_adjust_bw(reg_rule->start_freq, 558 ETSI_WEATHER_RADAR_BAND_LOW, max_bw); 559 if (bw > 0) { 560 i++; 561 562 ath11k_reg_update_rule(regd->reg_rules + i, 563 reg_rule->start_freq, 564 ETSI_WEATHER_RADAR_BAND_LOW, bw, 565 reg_rule->ant_gain, reg_rule->reg_power, 566 flags); 567 568 ath11k_dbg(ab, ATH11K_DBG_REG, 569 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n", 570 i + 1, reg_rule->start_freq, 571 ETSI_WEATHER_RADAR_BAND_LOW, bw, reg_rule->ant_gain, 572 reg_rule->reg_power, regd->reg_rules[i].dfs_cac_ms, 573 flags); 574 } 575 576 /* weather radar frequencies */ 577 start_freq = max_t(u32, reg_rule->start_freq, 578 ETSI_WEATHER_RADAR_BAND_LOW); 579 end_freq = min_t(u32, reg_rule->end_freq, ETSI_WEATHER_RADAR_BAND_HIGH); 580 581 bw = ath11k_reg_adjust_bw(start_freq, end_freq, max_bw); 582 if (bw > 0) { 583 i++; 584 585 ath11k_reg_update_rule(regd->reg_rules + i, start_freq, 586 end_freq, bw, reg_rule->ant_gain, 587 reg_rule->reg_power, flags); 588 589 regd->reg_rules[i].dfs_cac_ms = ETSI_WEATHER_RADAR_BAND_CAC_TIMEOUT; 590 591 ath11k_dbg(ab, ATH11K_DBG_REG, 592 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n", 593 i + 1, start_freq, end_freq, bw, 594 reg_rule->ant_gain, reg_rule->reg_power, 595 regd->reg_rules[i].dfs_cac_ms, flags); 596 } 597 598 /* frequencies above weather radar */ 599 bw = ath11k_reg_adjust_bw(ETSI_WEATHER_RADAR_BAND_HIGH, 600 reg_rule->end_freq, max_bw); 601 if (bw > 0) { 602 i++; 603 604 ath11k_reg_update_rule(regd->reg_rules + i, 605 ETSI_WEATHER_RADAR_BAND_HIGH, 606 reg_rule->end_freq, bw, 607 reg_rule->ant_gain, reg_rule->reg_power, 608 flags); 609 610 ath11k_dbg(ab, ATH11K_DBG_REG, 611 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n", 612 i + 1, ETSI_WEATHER_RADAR_BAND_HIGH, 613 reg_rule->end_freq, bw, reg_rule->ant_gain, 614 reg_rule->reg_power, regd->reg_rules[i].dfs_cac_ms, 615 flags); 616 } 617 618 *rule_idx = i; 619 } 620 621 struct ieee80211_regdomain * 622 ath11k_reg_build_regd(struct ath11k_base *ab, 623 struct cur_regulatory_info *reg_info, bool intersect) 624 { 625 struct ieee80211_regdomain *tmp_regd, *default_regd, *new_regd = NULL; 626 struct cur_reg_rule *reg_rule; 627 u8 i = 0, j = 0, k = 0; 628 u8 num_rules; 629 u16 max_bw; 630 u32 flags; 631 char alpha2[3]; 632 633 num_rules = reg_info->num_5ghz_reg_rules + reg_info->num_2ghz_reg_rules; 634 635 /* FIXME: Currently taking reg rules for 6 GHz only from Indoor AP mode list. 636 * This can be updated after complete 6 GHz regulatory support is added. 637 */ 638 if (reg_info->is_ext_reg_event) 639 num_rules += reg_info->num_6ghz_rules_ap[WMI_REG_INDOOR_AP]; 640 641 if (!num_rules) 642 goto ret; 643 644 /* Add max additional rules to accommodate weather radar band */ 645 if (reg_info->dfs_region == ATH11K_DFS_REG_ETSI) 646 num_rules += 2; 647 648 tmp_regd = kzalloc(sizeof(*tmp_regd) + 649 (num_rules * sizeof(struct ieee80211_reg_rule)), 650 GFP_ATOMIC); 651 if (!tmp_regd) 652 goto ret; 653 654 memcpy(tmp_regd->alpha2, reg_info->alpha2, REG_ALPHA2_LEN + 1); 655 memcpy(alpha2, reg_info->alpha2, REG_ALPHA2_LEN + 1); 656 alpha2[2] = '\0'; 657 tmp_regd->dfs_region = ath11k_map_fw_dfs_region(reg_info->dfs_region); 658 659 ath11k_dbg(ab, ATH11K_DBG_REG, 660 "Country %s, CFG Regdomain %s FW Regdomain %d, num_reg_rules %d\n", 661 alpha2, ath11k_reg_get_regdom_str(tmp_regd->dfs_region), 662 reg_info->dfs_region, num_rules); 663 /* Update reg_rules[] below. Firmware is expected to 664 * send these rules in order(2 GHz rules first and then 5 GHz) 665 */ 666 for (; i < num_rules; i++) { 667 if (reg_info->num_2ghz_reg_rules && 668 (i < reg_info->num_2ghz_reg_rules)) { 669 reg_rule = reg_info->reg_rules_2ghz_ptr + i; 670 max_bw = min_t(u16, reg_rule->max_bw, 671 reg_info->max_bw_2ghz); 672 flags = 0; 673 } else if (reg_info->num_5ghz_reg_rules && 674 (j < reg_info->num_5ghz_reg_rules)) { 675 reg_rule = reg_info->reg_rules_5ghz_ptr + j++; 676 max_bw = min_t(u16, reg_rule->max_bw, 677 reg_info->max_bw_5ghz); 678 679 /* FW doesn't pass NL80211_RRF_AUTO_BW flag for 680 * BW Auto correction, we can enable this by default 681 * for all 5G rules here. The regulatory core performs 682 * BW correction if required and applies flags as 683 * per other BW rule flags we pass from here 684 */ 685 flags = NL80211_RRF_AUTO_BW; 686 } else if (reg_info->is_ext_reg_event && 687 reg_info->num_6ghz_rules_ap[WMI_REG_INDOOR_AP] && 688 (k < reg_info->num_6ghz_rules_ap[WMI_REG_INDOOR_AP])) { 689 reg_rule = reg_info->reg_rules_6ghz_ap_ptr[WMI_REG_INDOOR_AP] + 690 k++; 691 max_bw = min_t(u16, reg_rule->max_bw, 692 reg_info->max_bw_6ghz_ap[WMI_REG_INDOOR_AP]); 693 flags = NL80211_RRF_AUTO_BW; 694 } else { 695 break; 696 } 697 698 flags |= ath11k_map_fw_reg_flags(reg_rule->flags); 699 flags |= ath11k_map_fw_phy_flags(reg_info->phybitmap); 700 701 ath11k_reg_update_rule(tmp_regd->reg_rules + i, 702 reg_rule->start_freq, 703 reg_rule->end_freq, max_bw, 704 reg_rule->ant_gain, reg_rule->reg_power, 705 flags); 706 707 /* Update dfs cac timeout if the dfs domain is ETSI and the 708 * new rule covers weather radar band. 709 * Default value of '0' corresponds to 60s timeout, so no 710 * need to update that for other rules. 711 */ 712 if (flags & NL80211_RRF_DFS && 713 reg_info->dfs_region == ATH11K_DFS_REG_ETSI && 714 (reg_rule->end_freq > ETSI_WEATHER_RADAR_BAND_LOW && 715 reg_rule->start_freq < ETSI_WEATHER_RADAR_BAND_HIGH)){ 716 ath11k_reg_update_weather_radar_band(ab, tmp_regd, 717 reg_rule, &i, 718 flags, max_bw); 719 continue; 720 } 721 722 if (reg_info->is_ext_reg_event) { 723 ath11k_dbg(ab, ATH11K_DBG_REG, 724 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d) (%d, %d)\n", 725 i + 1, reg_rule->start_freq, reg_rule->end_freq, 726 max_bw, reg_rule->ant_gain, reg_rule->reg_power, 727 tmp_regd->reg_rules[i].dfs_cac_ms, flags, 728 reg_rule->psd_flag, reg_rule->psd_eirp); 729 } else { 730 ath11k_dbg(ab, ATH11K_DBG_REG, 731 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n", 732 i + 1, reg_rule->start_freq, reg_rule->end_freq, 733 max_bw, reg_rule->ant_gain, reg_rule->reg_power, 734 tmp_regd->reg_rules[i].dfs_cac_ms, 735 flags); 736 } 737 } 738 739 tmp_regd->n_reg_rules = i; 740 741 if (intersect) { 742 default_regd = ab->default_regd[reg_info->phy_id]; 743 744 /* Get a new regd by intersecting the received regd with 745 * our default regd. 746 */ 747 new_regd = ath11k_regd_intersect(default_regd, tmp_regd); 748 kfree(tmp_regd); 749 if (!new_regd) { 750 ath11k_warn(ab, "Unable to create intersected regdomain\n"); 751 goto ret; 752 } 753 } else { 754 new_regd = tmp_regd; 755 } 756 757 ret: 758 return new_regd; 759 } 760 761 void ath11k_regd_update_work(struct work_struct *work) 762 { 763 struct ath11k *ar = container_of(work, struct ath11k, 764 regd_update_work); 765 int ret; 766 767 ret = ath11k_regd_update(ar); 768 if (ret) { 769 /* Firmware has already moved to the new regd. We need 770 * to maintain channel consistency across FW, Host driver 771 * and userspace. Hence as a fallback mechanism we can set 772 * the prev or default country code to the firmware. 773 */ 774 /* TODO: Implement Fallback Mechanism */ 775 } 776 } 777 778 void ath11k_reg_init(struct ath11k *ar) 779 { 780 ar->hw->wiphy->regulatory_flags = REGULATORY_WIPHY_SELF_MANAGED; 781 ar->hw->wiphy->reg_notifier = ath11k_reg_notifier; 782 } 783 784 void ath11k_reg_free(struct ath11k_base *ab) 785 { 786 int i; 787 788 for (i = 0; i < ab->hw_params.max_radios; i++) { 789 kfree(ab->default_regd[i]); 790 kfree(ab->new_regd[i]); 791 } 792 } 793