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 "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 "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 #if defined(__linux__) 229 static void ath11k_copy_regd(struct ieee80211_regdomain *regd_orig, 230 #elif defined(__FreeBSD__) 231 static void ath11k_copy_regd(const struct ieee80211_regdomain *regd_orig, 232 #endif 233 struct ieee80211_regdomain *regd_copy) 234 { 235 u8 i; 236 237 /* The caller should have checked error conditions */ 238 memcpy(regd_copy, regd_orig, sizeof(*regd_orig)); 239 240 for (i = 0; i < regd_orig->n_reg_rules; i++) 241 memcpy(®d_copy->reg_rules[i], ®d_orig->reg_rules[i], 242 sizeof(struct ieee80211_reg_rule)); 243 } 244 245 int ath11k_regd_update(struct ath11k *ar) 246 { 247 #if defined(__linux__) 248 struct ieee80211_regdomain *regd, *regd_copy = NULL; 249 #elif defined(__FreeBSD__) 250 const struct ieee80211_regdomain *regd; 251 struct ieee80211_regdomain *regd_copy = NULL; 252 #endif 253 int ret, regd_len, pdev_id; 254 struct ath11k_base *ab; 255 256 ab = ar->ab; 257 pdev_id = ar->pdev_idx; 258 259 spin_lock_bh(&ab->base_lock); 260 261 /* Prefer the latest regd update over default if it's available */ 262 if (ab->new_regd[pdev_id]) { 263 regd = ab->new_regd[pdev_id]; 264 } else { 265 /* Apply the regd received during init through 266 * WMI_REG_CHAN_LIST_CC event. In case of failure to 267 * receive the regd, initialize with a default world 268 * regulatory. 269 */ 270 if (ab->default_regd[pdev_id]) { 271 regd = ab->default_regd[pdev_id]; 272 } else { 273 ath11k_warn(ab, 274 "failed to receive default regd during init\n"); 275 #if defined(__linux__) 276 regd = (struct ieee80211_regdomain *)&ath11k_world_regd; 277 #elif defined(__FreeBSD__) 278 regd = &ath11k_world_regd; 279 #endif 280 } 281 } 282 283 if (!regd) { 284 ret = -EINVAL; 285 spin_unlock_bh(&ab->base_lock); 286 goto err; 287 } 288 289 regd_len = sizeof(*regd) + (regd->n_reg_rules * 290 sizeof(struct ieee80211_reg_rule)); 291 292 regd_copy = kzalloc(regd_len, GFP_ATOMIC); 293 if (regd_copy) 294 ath11k_copy_regd(regd, regd_copy); 295 296 spin_unlock_bh(&ab->base_lock); 297 298 if (!regd_copy) { 299 ret = -ENOMEM; 300 goto err; 301 } 302 303 ret = regulatory_set_wiphy_regd(ar->hw->wiphy, regd_copy); 304 305 kfree(regd_copy); 306 307 if (ret) 308 goto err; 309 310 if (ar->state == ATH11K_STATE_ON) { 311 ret = ath11k_reg_update_chan_list(ar, true); 312 if (ret) 313 goto err; 314 } 315 316 return 0; 317 err: 318 ath11k_warn(ab, "failed to perform regd update : %d\n", ret); 319 return ret; 320 } 321 322 static enum nl80211_dfs_regions 323 ath11k_map_fw_dfs_region(enum ath11k_dfs_region dfs_region) 324 { 325 switch (dfs_region) { 326 case ATH11K_DFS_REG_FCC: 327 case ATH11K_DFS_REG_CN: 328 return NL80211_DFS_FCC; 329 case ATH11K_DFS_REG_ETSI: 330 case ATH11K_DFS_REG_KR: 331 return NL80211_DFS_ETSI; 332 case ATH11K_DFS_REG_MKK: 333 case ATH11K_DFS_REG_MKK_N: 334 return NL80211_DFS_JP; 335 default: 336 return NL80211_DFS_UNSET; 337 } 338 } 339 340 static u32 ath11k_map_fw_reg_flags(u16 reg_flags) 341 { 342 u32 flags = 0; 343 344 if (reg_flags & REGULATORY_CHAN_NO_IR) 345 flags = NL80211_RRF_NO_IR; 346 347 if (reg_flags & REGULATORY_CHAN_RADAR) 348 flags |= NL80211_RRF_DFS; 349 350 if (reg_flags & REGULATORY_CHAN_NO_OFDM) 351 flags |= NL80211_RRF_NO_OFDM; 352 353 if (reg_flags & REGULATORY_CHAN_INDOOR_ONLY) 354 flags |= NL80211_RRF_NO_OUTDOOR; 355 356 if (reg_flags & REGULATORY_CHAN_NO_HT40) 357 flags |= NL80211_RRF_NO_HT40; 358 359 if (reg_flags & REGULATORY_CHAN_NO_80MHZ) 360 flags |= NL80211_RRF_NO_80MHZ; 361 362 if (reg_flags & REGULATORY_CHAN_NO_160MHZ) 363 flags |= NL80211_RRF_NO_160MHZ; 364 365 return flags; 366 } 367 368 static bool 369 ath11k_reg_can_intersect(struct ieee80211_reg_rule *rule1, 370 struct ieee80211_reg_rule *rule2) 371 { 372 u32 start_freq1, end_freq1; 373 u32 start_freq2, end_freq2; 374 375 start_freq1 = rule1->freq_range.start_freq_khz; 376 start_freq2 = rule2->freq_range.start_freq_khz; 377 378 end_freq1 = rule1->freq_range.end_freq_khz; 379 end_freq2 = rule2->freq_range.end_freq_khz; 380 381 if ((start_freq1 >= start_freq2 && 382 start_freq1 < end_freq2) || 383 (start_freq2 > start_freq1 && 384 start_freq2 < end_freq1)) 385 return true; 386 387 /* TODO: Should we restrict intersection feasibility 388 * based on min bandwidth of the intersected region also, 389 * say the intersected rule should have a min bandwidth 390 * of 20MHz? 391 */ 392 393 return false; 394 } 395 396 static void ath11k_reg_intersect_rules(struct ieee80211_reg_rule *rule1, 397 struct ieee80211_reg_rule *rule2, 398 struct ieee80211_reg_rule *new_rule) 399 { 400 u32 start_freq1, end_freq1; 401 u32 start_freq2, end_freq2; 402 u32 freq_diff, max_bw; 403 404 start_freq1 = rule1->freq_range.start_freq_khz; 405 start_freq2 = rule2->freq_range.start_freq_khz; 406 407 end_freq1 = rule1->freq_range.end_freq_khz; 408 end_freq2 = rule2->freq_range.end_freq_khz; 409 410 new_rule->freq_range.start_freq_khz = max_t(u32, start_freq1, 411 start_freq2); 412 new_rule->freq_range.end_freq_khz = min_t(u32, end_freq1, end_freq2); 413 414 freq_diff = new_rule->freq_range.end_freq_khz - 415 new_rule->freq_range.start_freq_khz; 416 max_bw = min_t(u32, rule1->freq_range.max_bandwidth_khz, 417 rule2->freq_range.max_bandwidth_khz); 418 new_rule->freq_range.max_bandwidth_khz = min_t(u32, max_bw, freq_diff); 419 420 new_rule->power_rule.max_antenna_gain = 421 min_t(u32, rule1->power_rule.max_antenna_gain, 422 rule2->power_rule.max_antenna_gain); 423 424 new_rule->power_rule.max_eirp = min_t(u32, rule1->power_rule.max_eirp, 425 rule2->power_rule.max_eirp); 426 427 /* Use the flags of both the rules */ 428 new_rule->flags = rule1->flags | rule2->flags; 429 430 /* To be safe, lts use the max cac timeout of both rules */ 431 new_rule->dfs_cac_ms = max_t(u32, rule1->dfs_cac_ms, 432 rule2->dfs_cac_ms); 433 } 434 435 static struct ieee80211_regdomain * 436 ath11k_regd_intersect(struct ieee80211_regdomain *default_regd, 437 struct ieee80211_regdomain *curr_regd) 438 { 439 u8 num_old_regd_rules, num_curr_regd_rules, num_new_regd_rules; 440 struct ieee80211_reg_rule *old_rule, *curr_rule, *new_rule; 441 struct ieee80211_regdomain *new_regd = NULL; 442 u8 i, j, k; 443 444 num_old_regd_rules = default_regd->n_reg_rules; 445 num_curr_regd_rules = curr_regd->n_reg_rules; 446 num_new_regd_rules = 0; 447 448 /* Find the number of intersecting rules to allocate new regd memory */ 449 for (i = 0; i < num_old_regd_rules; i++) { 450 old_rule = default_regd->reg_rules + i; 451 for (j = 0; j < num_curr_regd_rules; j++) { 452 curr_rule = curr_regd->reg_rules + j; 453 454 if (ath11k_reg_can_intersect(old_rule, curr_rule)) 455 num_new_regd_rules++; 456 } 457 } 458 459 if (!num_new_regd_rules) 460 return NULL; 461 462 new_regd = kzalloc(sizeof(*new_regd) + (num_new_regd_rules * 463 sizeof(struct ieee80211_reg_rule)), 464 GFP_ATOMIC); 465 466 if (!new_regd) 467 return NULL; 468 469 /* We set the new country and dfs region directly and only trim 470 * the freq, power, antenna gain by intersecting with the 471 * default regdomain. Also MAX of the dfs cac timeout is selected. 472 */ 473 new_regd->n_reg_rules = num_new_regd_rules; 474 memcpy(new_regd->alpha2, curr_regd->alpha2, sizeof(new_regd->alpha2)); 475 new_regd->dfs_region = curr_regd->dfs_region; 476 new_rule = new_regd->reg_rules; 477 478 for (i = 0, k = 0; i < num_old_regd_rules; i++) { 479 old_rule = default_regd->reg_rules + i; 480 for (j = 0; j < num_curr_regd_rules; j++) { 481 curr_rule = curr_regd->reg_rules + j; 482 483 if (ath11k_reg_can_intersect(old_rule, curr_rule)) 484 ath11k_reg_intersect_rules(old_rule, curr_rule, 485 (new_rule + k++)); 486 } 487 } 488 return new_regd; 489 } 490 491 static const char * 492 ath11k_reg_get_regdom_str(enum nl80211_dfs_regions dfs_region) 493 { 494 switch (dfs_region) { 495 case NL80211_DFS_FCC: 496 return "FCC"; 497 case NL80211_DFS_ETSI: 498 return "ETSI"; 499 case NL80211_DFS_JP: 500 return "JP"; 501 default: 502 return "UNSET"; 503 } 504 } 505 506 static u16 507 ath11k_reg_adjust_bw(u16 start_freq, u16 end_freq, u16 max_bw) 508 { 509 u16 bw; 510 511 if (end_freq <= start_freq) 512 return 0; 513 514 bw = end_freq - start_freq; 515 bw = min_t(u16, bw, max_bw); 516 517 if (bw >= 80 && bw < 160) 518 bw = 80; 519 else if (bw >= 40 && bw < 80) 520 bw = 40; 521 else if (bw >= 20 && bw < 40) 522 bw = 20; 523 else 524 bw = 0; 525 526 return bw; 527 } 528 529 static void 530 ath11k_reg_update_rule(struct ieee80211_reg_rule *reg_rule, u32 start_freq, 531 u32 end_freq, u32 bw, u32 ant_gain, u32 reg_pwr, 532 u32 reg_flags) 533 { 534 reg_rule->freq_range.start_freq_khz = MHZ_TO_KHZ(start_freq); 535 reg_rule->freq_range.end_freq_khz = MHZ_TO_KHZ(end_freq); 536 reg_rule->freq_range.max_bandwidth_khz = MHZ_TO_KHZ(bw); 537 reg_rule->power_rule.max_antenna_gain = DBI_TO_MBI(ant_gain); 538 reg_rule->power_rule.max_eirp = DBM_TO_MBM(reg_pwr); 539 reg_rule->flags = reg_flags; 540 } 541 542 static void 543 ath11k_reg_update_weather_radar_band(struct ath11k_base *ab, 544 struct ieee80211_regdomain *regd, 545 struct cur_reg_rule *reg_rule, 546 u8 *rule_idx, u32 flags, u16 max_bw) 547 { 548 u32 start_freq; 549 u32 end_freq; 550 u16 bw; 551 u8 i; 552 553 i = *rule_idx; 554 555 /* there might be situations when even the input rule must be dropped */ 556 i--; 557 558 /* frequencies below weather radar */ 559 bw = ath11k_reg_adjust_bw(reg_rule->start_freq, 560 ETSI_WEATHER_RADAR_BAND_LOW, max_bw); 561 if (bw > 0) { 562 i++; 563 564 ath11k_reg_update_rule(regd->reg_rules + i, 565 reg_rule->start_freq, 566 ETSI_WEATHER_RADAR_BAND_LOW, bw, 567 reg_rule->ant_gain, reg_rule->reg_power, 568 flags); 569 570 ath11k_dbg(ab, ATH11K_DBG_REG, 571 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n", 572 i + 1, reg_rule->start_freq, 573 ETSI_WEATHER_RADAR_BAND_LOW, bw, reg_rule->ant_gain, 574 reg_rule->reg_power, regd->reg_rules[i].dfs_cac_ms, 575 flags); 576 } 577 578 /* weather radar frequencies */ 579 start_freq = max_t(u32, reg_rule->start_freq, 580 ETSI_WEATHER_RADAR_BAND_LOW); 581 end_freq = min_t(u32, reg_rule->end_freq, ETSI_WEATHER_RADAR_BAND_HIGH); 582 583 bw = ath11k_reg_adjust_bw(start_freq, end_freq, max_bw); 584 if (bw > 0) { 585 i++; 586 587 ath11k_reg_update_rule(regd->reg_rules + i, start_freq, 588 end_freq, bw, reg_rule->ant_gain, 589 reg_rule->reg_power, flags); 590 591 regd->reg_rules[i].dfs_cac_ms = ETSI_WEATHER_RADAR_BAND_CAC_TIMEOUT; 592 593 ath11k_dbg(ab, ATH11K_DBG_REG, 594 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n", 595 i + 1, start_freq, end_freq, bw, 596 reg_rule->ant_gain, reg_rule->reg_power, 597 regd->reg_rules[i].dfs_cac_ms, flags); 598 } 599 600 /* frequencies above weather radar */ 601 bw = ath11k_reg_adjust_bw(ETSI_WEATHER_RADAR_BAND_HIGH, 602 reg_rule->end_freq, max_bw); 603 if (bw > 0) { 604 i++; 605 606 ath11k_reg_update_rule(regd->reg_rules + i, 607 ETSI_WEATHER_RADAR_BAND_HIGH, 608 reg_rule->end_freq, bw, 609 reg_rule->ant_gain, reg_rule->reg_power, 610 flags); 611 612 ath11k_dbg(ab, ATH11K_DBG_REG, 613 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n", 614 i + 1, ETSI_WEATHER_RADAR_BAND_HIGH, 615 reg_rule->end_freq, bw, reg_rule->ant_gain, 616 reg_rule->reg_power, regd->reg_rules[i].dfs_cac_ms, 617 flags); 618 } 619 620 *rule_idx = i; 621 } 622 623 struct ieee80211_regdomain * 624 ath11k_reg_build_regd(struct ath11k_base *ab, 625 struct cur_regulatory_info *reg_info, bool intersect) 626 { 627 struct ieee80211_regdomain *tmp_regd, *default_regd, *new_regd = NULL; 628 struct cur_reg_rule *reg_rule; 629 u8 i = 0, j = 0, k = 0; 630 u8 num_rules; 631 u16 max_bw; 632 u32 flags; 633 char alpha2[3]; 634 635 num_rules = reg_info->num_5ghz_reg_rules + reg_info->num_2ghz_reg_rules; 636 637 /* FIXME: Currently taking reg rules for 6 GHz only from Indoor AP mode list. 638 * This can be updated after complete 6 GHz regulatory support is added. 639 */ 640 if (reg_info->is_ext_reg_event) 641 num_rules += reg_info->num_6ghz_rules_ap[WMI_REG_INDOOR_AP]; 642 643 if (!num_rules) 644 goto ret; 645 646 /* Add max additional rules to accommodate weather radar band */ 647 if (reg_info->dfs_region == ATH11K_DFS_REG_ETSI) 648 num_rules += 2; 649 650 tmp_regd = kzalloc(sizeof(*tmp_regd) + 651 (num_rules * sizeof(struct ieee80211_reg_rule)), 652 GFP_ATOMIC); 653 if (!tmp_regd) 654 goto ret; 655 656 memcpy(tmp_regd->alpha2, reg_info->alpha2, REG_ALPHA2_LEN + 1); 657 memcpy(alpha2, reg_info->alpha2, REG_ALPHA2_LEN + 1); 658 alpha2[2] = '\0'; 659 tmp_regd->dfs_region = ath11k_map_fw_dfs_region(reg_info->dfs_region); 660 661 ath11k_dbg(ab, ATH11K_DBG_REG, 662 "Country %s, CFG Regdomain %s FW Regdomain %d, num_reg_rules %d\n", 663 alpha2, ath11k_reg_get_regdom_str(tmp_regd->dfs_region), 664 reg_info->dfs_region, num_rules); 665 /* Update reg_rules[] below. Firmware is expected to 666 * send these rules in order(2 GHz rules first and then 5 GHz) 667 */ 668 for (; i < num_rules; i++) { 669 if (reg_info->num_2ghz_reg_rules && 670 (i < reg_info->num_2ghz_reg_rules)) { 671 reg_rule = reg_info->reg_rules_2ghz_ptr + i; 672 max_bw = min_t(u16, reg_rule->max_bw, 673 reg_info->max_bw_2ghz); 674 flags = 0; 675 } else if (reg_info->num_5ghz_reg_rules && 676 (j < reg_info->num_5ghz_reg_rules)) { 677 reg_rule = reg_info->reg_rules_5ghz_ptr + j++; 678 max_bw = min_t(u16, reg_rule->max_bw, 679 reg_info->max_bw_5ghz); 680 681 /* FW doesn't pass NL80211_RRF_AUTO_BW flag for 682 * BW Auto correction, we can enable this by default 683 * for all 5G rules here. The regulatory core performs 684 * BW correction if required and applies flags as 685 * per other BW rule flags we pass from here 686 */ 687 flags = NL80211_RRF_AUTO_BW; 688 } else if (reg_info->is_ext_reg_event && 689 reg_info->num_6ghz_rules_ap[WMI_REG_INDOOR_AP] && 690 (k < reg_info->num_6ghz_rules_ap[WMI_REG_INDOOR_AP])) { 691 reg_rule = reg_info->reg_rules_6ghz_ap_ptr[WMI_REG_INDOOR_AP] + 692 k++; 693 max_bw = min_t(u16, reg_rule->max_bw, 694 reg_info->max_bw_6ghz_ap[WMI_REG_INDOOR_AP]); 695 flags = NL80211_RRF_AUTO_BW; 696 } else { 697 break; 698 } 699 700 flags |= ath11k_map_fw_reg_flags(reg_rule->flags); 701 702 ath11k_reg_update_rule(tmp_regd->reg_rules + i, 703 reg_rule->start_freq, 704 reg_rule->end_freq, max_bw, 705 reg_rule->ant_gain, reg_rule->reg_power, 706 flags); 707 708 /* Update dfs cac timeout if the dfs domain is ETSI and the 709 * new rule covers weather radar band. 710 * Default value of '0' corresponds to 60s timeout, so no 711 * need to update that for other rules. 712 */ 713 if (flags & NL80211_RRF_DFS && 714 reg_info->dfs_region == ATH11K_DFS_REG_ETSI && 715 (reg_rule->end_freq > ETSI_WEATHER_RADAR_BAND_LOW && 716 reg_rule->start_freq < ETSI_WEATHER_RADAR_BAND_HIGH)){ 717 ath11k_reg_update_weather_radar_band(ab, tmp_regd, 718 reg_rule, &i, 719 flags, max_bw); 720 continue; 721 } 722 723 if (reg_info->is_ext_reg_event) { 724 ath11k_dbg(ab, ATH11K_DBG_REG, 725 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d) (%d, %d)\n", 726 i + 1, reg_rule->start_freq, reg_rule->end_freq, 727 max_bw, reg_rule->ant_gain, reg_rule->reg_power, 728 tmp_regd->reg_rules[i].dfs_cac_ms, flags, 729 reg_rule->psd_flag, reg_rule->psd_eirp); 730 } else { 731 ath11k_dbg(ab, ATH11K_DBG_REG, 732 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n", 733 i + 1, reg_rule->start_freq, reg_rule->end_freq, 734 max_bw, reg_rule->ant_gain, reg_rule->reg_power, 735 tmp_regd->reg_rules[i].dfs_cac_ms, 736 flags); 737 } 738 } 739 740 tmp_regd->n_reg_rules = i; 741 742 if (intersect) { 743 default_regd = ab->default_regd[reg_info->phy_id]; 744 745 /* Get a new regd by intersecting the received regd with 746 * our default regd. 747 */ 748 new_regd = ath11k_regd_intersect(default_regd, tmp_regd); 749 kfree(tmp_regd); 750 if (!new_regd) { 751 ath11k_warn(ab, "Unable to create intersected regdomain\n"); 752 goto ret; 753 } 754 } else { 755 new_regd = tmp_regd; 756 } 757 758 ret: 759 return new_regd; 760 } 761 762 void ath11k_regd_update_work(struct work_struct *work) 763 { 764 struct ath11k *ar = container_of(work, struct ath11k, 765 regd_update_work); 766 int ret; 767 768 ret = ath11k_regd_update(ar); 769 if (ret) { 770 /* Firmware has already moved to the new regd. We need 771 * to maintain channel consistency across FW, Host driver 772 * and userspace. Hence as a fallback mechanism we can set 773 * the prev or default country code to the firmware. 774 */ 775 /* TODO: Implement Fallback Mechanism */ 776 } 777 } 778 779 void ath11k_reg_init(struct ath11k *ar) 780 { 781 ar->hw->wiphy->regulatory_flags = REGULATORY_WIPHY_SELF_MANAGED; 782 ar->hw->wiphy->reg_notifier = ath11k_reg_notifier; 783 } 784 785 void ath11k_reg_free(struct ath11k_base *ab) 786 { 787 int i; 788 789 for (i = 0; i < ab->hw_params.max_radios; i++) { 790 kfree(ab->default_regd[i]); 791 kfree(ab->new_regd[i]); 792 } 793 } 794