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 bool 357 ath11k_reg_can_intersect(struct ieee80211_reg_rule *rule1, 358 struct ieee80211_reg_rule *rule2) 359 { 360 u32 start_freq1, end_freq1; 361 u32 start_freq2, end_freq2; 362 363 start_freq1 = rule1->freq_range.start_freq_khz; 364 start_freq2 = rule2->freq_range.start_freq_khz; 365 366 end_freq1 = rule1->freq_range.end_freq_khz; 367 end_freq2 = rule2->freq_range.end_freq_khz; 368 369 if ((start_freq1 >= start_freq2 && 370 start_freq1 < end_freq2) || 371 (start_freq2 > start_freq1 && 372 start_freq2 < end_freq1)) 373 return true; 374 375 /* TODO: Should we restrict intersection feasibility 376 * based on min bandwidth of the intersected region also, 377 * say the intersected rule should have a min bandwidth 378 * of 20MHz? 379 */ 380 381 return false; 382 } 383 384 static void ath11k_reg_intersect_rules(struct ieee80211_reg_rule *rule1, 385 struct ieee80211_reg_rule *rule2, 386 struct ieee80211_reg_rule *new_rule) 387 { 388 u32 start_freq1, end_freq1; 389 u32 start_freq2, end_freq2; 390 u32 freq_diff, max_bw; 391 392 start_freq1 = rule1->freq_range.start_freq_khz; 393 start_freq2 = rule2->freq_range.start_freq_khz; 394 395 end_freq1 = rule1->freq_range.end_freq_khz; 396 end_freq2 = rule2->freq_range.end_freq_khz; 397 398 new_rule->freq_range.start_freq_khz = max_t(u32, start_freq1, 399 start_freq2); 400 new_rule->freq_range.end_freq_khz = min_t(u32, end_freq1, end_freq2); 401 402 freq_diff = new_rule->freq_range.end_freq_khz - 403 new_rule->freq_range.start_freq_khz; 404 max_bw = min_t(u32, rule1->freq_range.max_bandwidth_khz, 405 rule2->freq_range.max_bandwidth_khz); 406 new_rule->freq_range.max_bandwidth_khz = min_t(u32, max_bw, freq_diff); 407 408 new_rule->power_rule.max_antenna_gain = 409 min_t(u32, rule1->power_rule.max_antenna_gain, 410 rule2->power_rule.max_antenna_gain); 411 412 new_rule->power_rule.max_eirp = min_t(u32, rule1->power_rule.max_eirp, 413 rule2->power_rule.max_eirp); 414 415 /* Use the flags of both the rules */ 416 new_rule->flags = rule1->flags | rule2->flags; 417 418 /* To be safe, lts use the max cac timeout of both rules */ 419 new_rule->dfs_cac_ms = max_t(u32, rule1->dfs_cac_ms, 420 rule2->dfs_cac_ms); 421 } 422 423 static struct ieee80211_regdomain * 424 ath11k_regd_intersect(struct ieee80211_regdomain *default_regd, 425 struct ieee80211_regdomain *curr_regd) 426 { 427 u8 num_old_regd_rules, num_curr_regd_rules, num_new_regd_rules; 428 struct ieee80211_reg_rule *old_rule, *curr_rule, *new_rule; 429 struct ieee80211_regdomain *new_regd = NULL; 430 u8 i, j, k; 431 432 num_old_regd_rules = default_regd->n_reg_rules; 433 num_curr_regd_rules = curr_regd->n_reg_rules; 434 num_new_regd_rules = 0; 435 436 /* Find the number of intersecting rules to allocate new regd memory */ 437 for (i = 0; i < num_old_regd_rules; i++) { 438 old_rule = default_regd->reg_rules + i; 439 for (j = 0; j < num_curr_regd_rules; j++) { 440 curr_rule = curr_regd->reg_rules + j; 441 442 if (ath11k_reg_can_intersect(old_rule, curr_rule)) 443 num_new_regd_rules++; 444 } 445 } 446 447 if (!num_new_regd_rules) 448 return NULL; 449 450 new_regd = kzalloc(sizeof(*new_regd) + (num_new_regd_rules * 451 sizeof(struct ieee80211_reg_rule)), 452 GFP_ATOMIC); 453 454 if (!new_regd) 455 return NULL; 456 457 /* We set the new country and dfs region directly and only trim 458 * the freq, power, antenna gain by intersecting with the 459 * default regdomain. Also MAX of the dfs cac timeout is selected. 460 */ 461 new_regd->n_reg_rules = num_new_regd_rules; 462 memcpy(new_regd->alpha2, curr_regd->alpha2, sizeof(new_regd->alpha2)); 463 new_regd->dfs_region = curr_regd->dfs_region; 464 new_rule = new_regd->reg_rules; 465 466 for (i = 0, k = 0; i < num_old_regd_rules; i++) { 467 old_rule = default_regd->reg_rules + i; 468 for (j = 0; j < num_curr_regd_rules; j++) { 469 curr_rule = curr_regd->reg_rules + j; 470 471 if (ath11k_reg_can_intersect(old_rule, curr_rule)) 472 ath11k_reg_intersect_rules(old_rule, curr_rule, 473 (new_rule + k++)); 474 } 475 } 476 return new_regd; 477 } 478 479 static const char * 480 ath11k_reg_get_regdom_str(enum nl80211_dfs_regions dfs_region) 481 { 482 switch (dfs_region) { 483 case NL80211_DFS_FCC: 484 return "FCC"; 485 case NL80211_DFS_ETSI: 486 return "ETSI"; 487 case NL80211_DFS_JP: 488 return "JP"; 489 default: 490 return "UNSET"; 491 } 492 } 493 494 static u16 495 ath11k_reg_adjust_bw(u16 start_freq, u16 end_freq, u16 max_bw) 496 { 497 u16 bw; 498 499 if (end_freq <= start_freq) 500 return 0; 501 502 bw = end_freq - start_freq; 503 bw = min_t(u16, bw, max_bw); 504 505 if (bw >= 80 && bw < 160) 506 bw = 80; 507 else if (bw >= 40 && bw < 80) 508 bw = 40; 509 else if (bw >= 20 && bw < 40) 510 bw = 20; 511 else 512 bw = 0; 513 514 return bw; 515 } 516 517 static void 518 ath11k_reg_update_rule(struct ieee80211_reg_rule *reg_rule, u32 start_freq, 519 u32 end_freq, u32 bw, u32 ant_gain, u32 reg_pwr, 520 u32 reg_flags) 521 { 522 reg_rule->freq_range.start_freq_khz = MHZ_TO_KHZ(start_freq); 523 reg_rule->freq_range.end_freq_khz = MHZ_TO_KHZ(end_freq); 524 reg_rule->freq_range.max_bandwidth_khz = MHZ_TO_KHZ(bw); 525 reg_rule->power_rule.max_antenna_gain = DBI_TO_MBI(ant_gain); 526 reg_rule->power_rule.max_eirp = DBM_TO_MBM(reg_pwr); 527 reg_rule->flags = reg_flags; 528 } 529 530 static void 531 ath11k_reg_update_weather_radar_band(struct ath11k_base *ab, 532 struct ieee80211_regdomain *regd, 533 struct cur_reg_rule *reg_rule, 534 u8 *rule_idx, u32 flags, u16 max_bw) 535 { 536 u32 start_freq; 537 u32 end_freq; 538 u16 bw; 539 u8 i; 540 541 i = *rule_idx; 542 543 /* there might be situations when even the input rule must be dropped */ 544 i--; 545 546 /* frequencies below weather radar */ 547 bw = ath11k_reg_adjust_bw(reg_rule->start_freq, 548 ETSI_WEATHER_RADAR_BAND_LOW, max_bw); 549 if (bw > 0) { 550 i++; 551 552 ath11k_reg_update_rule(regd->reg_rules + i, 553 reg_rule->start_freq, 554 ETSI_WEATHER_RADAR_BAND_LOW, bw, 555 reg_rule->ant_gain, reg_rule->reg_power, 556 flags); 557 558 ath11k_dbg(ab, ATH11K_DBG_REG, 559 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n", 560 i + 1, reg_rule->start_freq, 561 ETSI_WEATHER_RADAR_BAND_LOW, bw, reg_rule->ant_gain, 562 reg_rule->reg_power, regd->reg_rules[i].dfs_cac_ms, 563 flags); 564 } 565 566 /* weather radar frequencies */ 567 start_freq = max_t(u32, reg_rule->start_freq, 568 ETSI_WEATHER_RADAR_BAND_LOW); 569 end_freq = min_t(u32, reg_rule->end_freq, ETSI_WEATHER_RADAR_BAND_HIGH); 570 571 bw = ath11k_reg_adjust_bw(start_freq, end_freq, max_bw); 572 if (bw > 0) { 573 i++; 574 575 ath11k_reg_update_rule(regd->reg_rules + i, start_freq, 576 end_freq, bw, reg_rule->ant_gain, 577 reg_rule->reg_power, flags); 578 579 regd->reg_rules[i].dfs_cac_ms = ETSI_WEATHER_RADAR_BAND_CAC_TIMEOUT; 580 581 ath11k_dbg(ab, ATH11K_DBG_REG, 582 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n", 583 i + 1, start_freq, end_freq, bw, 584 reg_rule->ant_gain, reg_rule->reg_power, 585 regd->reg_rules[i].dfs_cac_ms, flags); 586 } 587 588 /* frequencies above weather radar */ 589 bw = ath11k_reg_adjust_bw(ETSI_WEATHER_RADAR_BAND_HIGH, 590 reg_rule->end_freq, max_bw); 591 if (bw > 0) { 592 i++; 593 594 ath11k_reg_update_rule(regd->reg_rules + i, 595 ETSI_WEATHER_RADAR_BAND_HIGH, 596 reg_rule->end_freq, bw, 597 reg_rule->ant_gain, reg_rule->reg_power, 598 flags); 599 600 ath11k_dbg(ab, ATH11K_DBG_REG, 601 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n", 602 i + 1, ETSI_WEATHER_RADAR_BAND_HIGH, 603 reg_rule->end_freq, bw, reg_rule->ant_gain, 604 reg_rule->reg_power, regd->reg_rules[i].dfs_cac_ms, 605 flags); 606 } 607 608 *rule_idx = i; 609 } 610 611 struct ieee80211_regdomain * 612 ath11k_reg_build_regd(struct ath11k_base *ab, 613 struct cur_regulatory_info *reg_info, bool intersect) 614 { 615 struct ieee80211_regdomain *tmp_regd, *default_regd, *new_regd = NULL; 616 struct cur_reg_rule *reg_rule; 617 u8 i = 0, j = 0, k = 0; 618 u8 num_rules; 619 u16 max_bw; 620 u32 flags; 621 char alpha2[3]; 622 623 num_rules = reg_info->num_5ghz_reg_rules + reg_info->num_2ghz_reg_rules; 624 625 /* FIXME: Currently taking reg rules for 6 GHz only from Indoor AP mode list. 626 * This can be updated after complete 6 GHz regulatory support is added. 627 */ 628 if (reg_info->is_ext_reg_event) 629 num_rules += reg_info->num_6ghz_rules_ap[WMI_REG_INDOOR_AP]; 630 631 if (!num_rules) 632 goto ret; 633 634 /* Add max additional rules to accommodate weather radar band */ 635 if (reg_info->dfs_region == ATH11K_DFS_REG_ETSI) 636 num_rules += 2; 637 638 tmp_regd = kzalloc(sizeof(*tmp_regd) + 639 (num_rules * sizeof(struct ieee80211_reg_rule)), 640 GFP_ATOMIC); 641 if (!tmp_regd) 642 goto ret; 643 644 memcpy(tmp_regd->alpha2, reg_info->alpha2, REG_ALPHA2_LEN + 1); 645 memcpy(alpha2, reg_info->alpha2, REG_ALPHA2_LEN + 1); 646 alpha2[2] = '\0'; 647 tmp_regd->dfs_region = ath11k_map_fw_dfs_region(reg_info->dfs_region); 648 649 ath11k_dbg(ab, ATH11K_DBG_REG, 650 "Country %s, CFG Regdomain %s FW Regdomain %d, num_reg_rules %d\n", 651 alpha2, ath11k_reg_get_regdom_str(tmp_regd->dfs_region), 652 reg_info->dfs_region, num_rules); 653 /* Update reg_rules[] below. Firmware is expected to 654 * send these rules in order(2 GHz rules first and then 5 GHz) 655 */ 656 for (; i < num_rules; i++) { 657 if (reg_info->num_2ghz_reg_rules && 658 (i < reg_info->num_2ghz_reg_rules)) { 659 reg_rule = reg_info->reg_rules_2ghz_ptr + i; 660 max_bw = min_t(u16, reg_rule->max_bw, 661 reg_info->max_bw_2ghz); 662 flags = 0; 663 } else if (reg_info->num_5ghz_reg_rules && 664 (j < reg_info->num_5ghz_reg_rules)) { 665 reg_rule = reg_info->reg_rules_5ghz_ptr + j++; 666 max_bw = min_t(u16, reg_rule->max_bw, 667 reg_info->max_bw_5ghz); 668 669 /* FW doesn't pass NL80211_RRF_AUTO_BW flag for 670 * BW Auto correction, we can enable this by default 671 * for all 5G rules here. The regulatory core performs 672 * BW correction if required and applies flags as 673 * per other BW rule flags we pass from here 674 */ 675 flags = NL80211_RRF_AUTO_BW; 676 } else if (reg_info->is_ext_reg_event && 677 reg_info->num_6ghz_rules_ap[WMI_REG_INDOOR_AP] && 678 (k < reg_info->num_6ghz_rules_ap[WMI_REG_INDOOR_AP])) { 679 reg_rule = reg_info->reg_rules_6ghz_ap_ptr[WMI_REG_INDOOR_AP] + 680 k++; 681 max_bw = min_t(u16, reg_rule->max_bw, 682 reg_info->max_bw_6ghz_ap[WMI_REG_INDOOR_AP]); 683 flags = NL80211_RRF_AUTO_BW; 684 } else { 685 break; 686 } 687 688 flags |= ath11k_map_fw_reg_flags(reg_rule->flags); 689 690 ath11k_reg_update_rule(tmp_regd->reg_rules + i, 691 reg_rule->start_freq, 692 reg_rule->end_freq, max_bw, 693 reg_rule->ant_gain, reg_rule->reg_power, 694 flags); 695 696 /* Update dfs cac timeout if the dfs domain is ETSI and the 697 * new rule covers weather radar band. 698 * Default value of '0' corresponds to 60s timeout, so no 699 * need to update that for other rules. 700 */ 701 if (flags & NL80211_RRF_DFS && 702 reg_info->dfs_region == ATH11K_DFS_REG_ETSI && 703 (reg_rule->end_freq > ETSI_WEATHER_RADAR_BAND_LOW && 704 reg_rule->start_freq < ETSI_WEATHER_RADAR_BAND_HIGH)){ 705 ath11k_reg_update_weather_radar_band(ab, tmp_regd, 706 reg_rule, &i, 707 flags, max_bw); 708 continue; 709 } 710 711 if (reg_info->is_ext_reg_event) { 712 ath11k_dbg(ab, ATH11K_DBG_REG, 713 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d) (%d, %d)\n", 714 i + 1, reg_rule->start_freq, reg_rule->end_freq, 715 max_bw, reg_rule->ant_gain, reg_rule->reg_power, 716 tmp_regd->reg_rules[i].dfs_cac_ms, flags, 717 reg_rule->psd_flag, reg_rule->psd_eirp); 718 } else { 719 ath11k_dbg(ab, ATH11K_DBG_REG, 720 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n", 721 i + 1, reg_rule->start_freq, reg_rule->end_freq, 722 max_bw, reg_rule->ant_gain, reg_rule->reg_power, 723 tmp_regd->reg_rules[i].dfs_cac_ms, 724 flags); 725 } 726 } 727 728 tmp_regd->n_reg_rules = i; 729 730 if (intersect) { 731 default_regd = ab->default_regd[reg_info->phy_id]; 732 733 /* Get a new regd by intersecting the received regd with 734 * our default regd. 735 */ 736 new_regd = ath11k_regd_intersect(default_regd, tmp_regd); 737 kfree(tmp_regd); 738 if (!new_regd) { 739 ath11k_warn(ab, "Unable to create intersected regdomain\n"); 740 goto ret; 741 } 742 } else { 743 new_regd = tmp_regd; 744 } 745 746 ret: 747 return new_regd; 748 } 749 750 void ath11k_regd_update_work(struct work_struct *work) 751 { 752 struct ath11k *ar = container_of(work, struct ath11k, 753 regd_update_work); 754 int ret; 755 756 ret = ath11k_regd_update(ar); 757 if (ret) { 758 /* Firmware has already moved to the new regd. We need 759 * to maintain channel consistency across FW, Host driver 760 * and userspace. Hence as a fallback mechanism we can set 761 * the prev or default country code to the firmware. 762 */ 763 /* TODO: Implement Fallback Mechanism */ 764 } 765 } 766 767 void ath11k_reg_init(struct ath11k *ar) 768 { 769 ar->hw->wiphy->regulatory_flags = REGULATORY_WIPHY_SELF_MANAGED; 770 ar->hw->wiphy->reg_notifier = ath11k_reg_notifier; 771 } 772 773 void ath11k_reg_free(struct ath11k_base *ab) 774 { 775 int i; 776 777 for (i = 0; i < ab->hw_params.max_radios; i++) { 778 kfree(ab->default_regd[i]); 779 kfree(ab->new_regd[i]); 780 } 781 } 782