1 // SPDX-License-Identifier: BSD-3-Clause-Clear 2 /* 3 * Copyright (c) 2018-2019 The Linux Foundation. All rights reserved. 4 */ 5 #include <linux/rtnetlink.h> 6 7 #include "core.h" 8 #include "debug.h" 9 10 /* World regdom to be used in case default regd from fw is unavailable */ 11 #define ATH11K_2GHZ_CH01_11 REG_RULE(2412 - 10, 2462 + 10, 40, 0, 20, 0) 12 #define ATH11K_5GHZ_5150_5350 REG_RULE(5150 - 10, 5350 + 10, 80, 0, 30,\ 13 NL80211_RRF_NO_IR) 14 #define ATH11K_5GHZ_5725_5850 REG_RULE(5725 - 10, 5850 + 10, 80, 0, 30,\ 15 NL80211_RRF_NO_IR) 16 17 #define ETSI_WEATHER_RADAR_BAND_LOW 5590 18 #define ETSI_WEATHER_RADAR_BAND_HIGH 5650 19 #define ETSI_WEATHER_RADAR_BAND_CAC_TIMEOUT 600000 20 21 static const struct ieee80211_regdomain ath11k_world_regd = { 22 .n_reg_rules = 3, 23 .alpha2 = "00", 24 .reg_rules = { 25 ATH11K_2GHZ_CH01_11, 26 ATH11K_5GHZ_5150_5350, 27 ATH11K_5GHZ_5725_5850, 28 } 29 }; 30 31 static bool ath11k_regdom_changes(struct ath11k *ar, char *alpha2) 32 { 33 const struct ieee80211_regdomain *regd; 34 35 regd = rcu_dereference_rtnl(ar->hw->wiphy->regd); 36 /* This can happen during wiphy registration where the previous 37 * user request is received before we update the regd received 38 * from firmware. 39 */ 40 if (!regd) 41 return true; 42 43 return memcmp(regd->alpha2, alpha2, 2) != 0; 44 } 45 46 static void 47 ath11k_reg_notifier(struct wiphy *wiphy, struct regulatory_request *request) 48 { 49 struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy); 50 struct wmi_init_country_params init_country_param; 51 struct wmi_set_current_country_params set_current_param = {}; 52 struct ath11k *ar = hw->priv; 53 int ret; 54 55 ath11k_dbg(ar->ab, ATH11K_DBG_REG, 56 "Regulatory Notification received for %s\n", wiphy_name(wiphy)); 57 58 /* Currently supporting only General User Hints. Cell base user 59 * hints to be handled later. 60 * Hints from other sources like Core, Beacons are not expected for 61 * self managed wiphy's 62 */ 63 if (!(request->initiator == NL80211_REGDOM_SET_BY_USER && 64 request->user_reg_hint_type == NL80211_USER_REG_HINT_USER)) { 65 ath11k_warn(ar->ab, "Unexpected Regulatory event for this wiphy\n"); 66 return; 67 } 68 69 if (!IS_ENABLED(CONFIG_ATH_REG_DYNAMIC_USER_REG_HINTS)) { 70 ath11k_dbg(ar->ab, ATH11K_DBG_REG, 71 "Country Setting is not allowed\n"); 72 return; 73 } 74 75 if (!ath11k_regdom_changes(ar, request->alpha2)) { 76 ath11k_dbg(ar->ab, ATH11K_DBG_REG, "Country is already set\n"); 77 return; 78 } 79 80 /* Set the country code to the firmware and will receive 81 * the WMI_REG_CHAN_LIST_CC EVENT for updating the 82 * reg info 83 */ 84 if (ar->ab->hw_params.current_cc_support) { 85 memcpy(&set_current_param.alpha2, request->alpha2, 2); 86 memcpy(&ar->alpha2, &set_current_param.alpha2, 2); 87 ret = ath11k_wmi_send_set_current_country_cmd(ar, &set_current_param); 88 if (ret) 89 ath11k_warn(ar->ab, 90 "failed set current country code: %d\n", ret); 91 } else { 92 init_country_param.flags = ALPHA_IS_SET; 93 memcpy(&init_country_param.cc_info.alpha2, request->alpha2, 2); 94 init_country_param.cc_info.alpha2[2] = 0; 95 96 ret = ath11k_wmi_send_init_country_cmd(ar, init_country_param); 97 if (ret) 98 ath11k_warn(ar->ab, 99 "INIT Country code set to fw failed : %d\n", ret); 100 } 101 102 ath11k_mac_11d_scan_stop(ar); 103 ar->regdom_set_by_user = true; 104 } 105 106 int ath11k_reg_update_chan_list(struct ath11k *ar, bool wait) 107 { 108 struct ieee80211_supported_band **bands; 109 struct scan_chan_list_params *params; 110 struct ieee80211_channel *channel; 111 struct ieee80211_hw *hw = ar->hw; 112 struct channel_param *ch; 113 enum nl80211_band band; 114 int num_channels = 0; 115 int i, ret, left; 116 117 if (wait && ar->state_11d != ATH11K_11D_IDLE) { 118 left = wait_for_completion_timeout(&ar->completed_11d_scan, 119 ATH11K_SCAN_TIMEOUT_HZ); 120 if (!left) { 121 ath11k_dbg(ar->ab, ATH11K_DBG_REG, 122 "failed to receive 11d scan complete: timed out\n"); 123 ar->state_11d = ATH11K_11D_IDLE; 124 } 125 ath11k_dbg(ar->ab, ATH11K_DBG_REG, 126 "reg 11d scan wait left time %d\n", left); 127 } 128 129 if (wait && 130 (ar->scan.state == ATH11K_SCAN_STARTING || 131 ar->scan.state == ATH11K_SCAN_RUNNING)) { 132 left = wait_for_completion_timeout(&ar->scan.completed, 133 ATH11K_SCAN_TIMEOUT_HZ); 134 if (!left) 135 ath11k_dbg(ar->ab, ATH11K_DBG_REG, 136 "failed to receive hw scan complete: timed out\n"); 137 138 ath11k_dbg(ar->ab, ATH11K_DBG_REG, 139 "reg hw scan wait left time %d\n", left); 140 } 141 142 if (ar->state == ATH11K_STATE_RESTARTING) 143 return 0; 144 145 bands = hw->wiphy->bands; 146 for (band = 0; band < NUM_NL80211_BANDS; band++) { 147 if (!bands[band]) 148 continue; 149 150 for (i = 0; i < bands[band]->n_channels; i++) { 151 if (bands[band]->channels[i].flags & 152 IEEE80211_CHAN_DISABLED) 153 continue; 154 155 num_channels++; 156 } 157 } 158 159 if (WARN_ON(!num_channels)) 160 return -EINVAL; 161 162 params = kzalloc(struct_size(params, ch_param, num_channels), 163 GFP_KERNEL); 164 if (!params) 165 return -ENOMEM; 166 167 params->pdev_id = ar->pdev->pdev_id; 168 params->nallchans = num_channels; 169 170 ch = params->ch_param; 171 172 for (band = 0; band < NUM_NL80211_BANDS; band++) { 173 if (!bands[band]) 174 continue; 175 176 for (i = 0; i < bands[band]->n_channels; i++) { 177 channel = &bands[band]->channels[i]; 178 179 if (channel->flags & IEEE80211_CHAN_DISABLED) 180 continue; 181 182 /* TODO: Set to true/false based on some condition? */ 183 ch->allow_ht = true; 184 ch->allow_vht = true; 185 ch->allow_he = true; 186 187 ch->dfs_set = 188 !!(channel->flags & IEEE80211_CHAN_RADAR); 189 ch->is_chan_passive = !!(channel->flags & 190 IEEE80211_CHAN_NO_IR); 191 ch->is_chan_passive |= ch->dfs_set; 192 ch->mhz = channel->center_freq; 193 ch->cfreq1 = channel->center_freq; 194 ch->minpower = 0; 195 ch->maxpower = channel->max_power * 2; 196 ch->maxregpower = channel->max_reg_power * 2; 197 ch->antennamax = channel->max_antenna_gain * 2; 198 199 /* TODO: Use appropriate phymodes */ 200 if (channel->band == NL80211_BAND_2GHZ) 201 ch->phy_mode = MODE_11G; 202 else 203 ch->phy_mode = MODE_11A; 204 205 if (channel->band == NL80211_BAND_6GHZ && 206 cfg80211_channel_is_psc(channel)) 207 ch->psc_channel = true; 208 209 ath11k_dbg(ar->ab, ATH11K_DBG_WMI, 210 "mac channel [%d/%d] freq %d maxpower %d regpower %d antenna %d mode %d\n", 211 i, params->nallchans, 212 ch->mhz, ch->maxpower, ch->maxregpower, 213 ch->antennamax, ch->phy_mode); 214 215 ch++; 216 /* TODO: use quarrter/half rate, cfreq12, dfs_cfreq2 217 * set_agile, reg_class_idx 218 */ 219 } 220 } 221 222 ret = ath11k_wmi_send_scan_chan_list_cmd(ar, params); 223 kfree(params); 224 225 return ret; 226 } 227 228 static void ath11k_copy_regd(struct ieee80211_regdomain *regd_orig, 229 struct ieee80211_regdomain *regd_copy) 230 { 231 u8 i; 232 233 /* The caller should have checked error conditions */ 234 memcpy(regd_copy, regd_orig, sizeof(*regd_orig)); 235 236 for (i = 0; i < regd_orig->n_reg_rules; i++) 237 memcpy(®d_copy->reg_rules[i], ®d_orig->reg_rules[i], 238 sizeof(struct ieee80211_reg_rule)); 239 } 240 241 int ath11k_regd_update(struct ath11k *ar) 242 { 243 struct ieee80211_regdomain *regd, *regd_copy = NULL; 244 int ret, regd_len, pdev_id; 245 struct ath11k_base *ab; 246 247 ab = ar->ab; 248 pdev_id = ar->pdev_idx; 249 250 spin_lock_bh(&ab->base_lock); 251 252 /* Prefer the latest regd update over default if it's available */ 253 if (ab->new_regd[pdev_id]) { 254 regd = ab->new_regd[pdev_id]; 255 } else { 256 /* Apply the regd received during init through 257 * WMI_REG_CHAN_LIST_CC event. In case of failure to 258 * receive the regd, initialize with a default world 259 * regulatory. 260 */ 261 if (ab->default_regd[pdev_id]) { 262 regd = ab->default_regd[pdev_id]; 263 } else { 264 ath11k_warn(ab, 265 "failed to receive default regd during init\n"); 266 regd = (struct ieee80211_regdomain *)&ath11k_world_regd; 267 } 268 } 269 270 if (!regd) { 271 ret = -EINVAL; 272 spin_unlock_bh(&ab->base_lock); 273 goto err; 274 } 275 276 regd_len = sizeof(*regd) + (regd->n_reg_rules * 277 sizeof(struct ieee80211_reg_rule)); 278 279 regd_copy = kzalloc(regd_len, GFP_ATOMIC); 280 if (regd_copy) 281 ath11k_copy_regd(regd, regd_copy); 282 283 spin_unlock_bh(&ab->base_lock); 284 285 if (!regd_copy) { 286 ret = -ENOMEM; 287 goto err; 288 } 289 290 rtnl_lock(); 291 wiphy_lock(ar->hw->wiphy); 292 ret = regulatory_set_wiphy_regd_sync(ar->hw->wiphy, regd_copy); 293 wiphy_unlock(ar->hw->wiphy); 294 rtnl_unlock(); 295 296 kfree(regd_copy); 297 298 if (ret) 299 goto err; 300 301 if (ar->state == ATH11K_STATE_ON) { 302 ret = ath11k_reg_update_chan_list(ar, true); 303 if (ret) 304 goto err; 305 } 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 bool 360 ath11k_reg_can_intersect(struct ieee80211_reg_rule *rule1, 361 struct ieee80211_reg_rule *rule2) 362 { 363 u32 start_freq1, end_freq1; 364 u32 start_freq2, end_freq2; 365 366 start_freq1 = rule1->freq_range.start_freq_khz; 367 start_freq2 = rule2->freq_range.start_freq_khz; 368 369 end_freq1 = rule1->freq_range.end_freq_khz; 370 end_freq2 = rule2->freq_range.end_freq_khz; 371 372 if ((start_freq1 >= start_freq2 && 373 start_freq1 < end_freq2) || 374 (start_freq2 > start_freq1 && 375 start_freq2 < end_freq1)) 376 return true; 377 378 /* TODO: Should we restrict intersection feasibility 379 * based on min bandwidth of the intersected region also, 380 * say the intersected rule should have a min bandwidth 381 * of 20MHz? 382 */ 383 384 return false; 385 } 386 387 static void ath11k_reg_intersect_rules(struct ieee80211_reg_rule *rule1, 388 struct ieee80211_reg_rule *rule2, 389 struct ieee80211_reg_rule *new_rule) 390 { 391 u32 start_freq1, end_freq1; 392 u32 start_freq2, end_freq2; 393 u32 freq_diff, max_bw; 394 395 start_freq1 = rule1->freq_range.start_freq_khz; 396 start_freq2 = rule2->freq_range.start_freq_khz; 397 398 end_freq1 = rule1->freq_range.end_freq_khz; 399 end_freq2 = rule2->freq_range.end_freq_khz; 400 401 new_rule->freq_range.start_freq_khz = max_t(u32, start_freq1, 402 start_freq2); 403 new_rule->freq_range.end_freq_khz = min_t(u32, end_freq1, end_freq2); 404 405 freq_diff = new_rule->freq_range.end_freq_khz - 406 new_rule->freq_range.start_freq_khz; 407 max_bw = min_t(u32, rule1->freq_range.max_bandwidth_khz, 408 rule2->freq_range.max_bandwidth_khz); 409 new_rule->freq_range.max_bandwidth_khz = min_t(u32, max_bw, freq_diff); 410 411 new_rule->power_rule.max_antenna_gain = 412 min_t(u32, rule1->power_rule.max_antenna_gain, 413 rule2->power_rule.max_antenna_gain); 414 415 new_rule->power_rule.max_eirp = min_t(u32, rule1->power_rule.max_eirp, 416 rule2->power_rule.max_eirp); 417 418 /* Use the flags of both the rules */ 419 new_rule->flags = rule1->flags | rule2->flags; 420 421 /* To be safe, lts use the max cac timeout of both rules */ 422 new_rule->dfs_cac_ms = max_t(u32, rule1->dfs_cac_ms, 423 rule2->dfs_cac_ms); 424 } 425 426 static struct ieee80211_regdomain * 427 ath11k_regd_intersect(struct ieee80211_regdomain *default_regd, 428 struct ieee80211_regdomain *curr_regd) 429 { 430 u8 num_old_regd_rules, num_curr_regd_rules, num_new_regd_rules; 431 struct ieee80211_reg_rule *old_rule, *curr_rule, *new_rule; 432 struct ieee80211_regdomain *new_regd = NULL; 433 u8 i, j, k; 434 435 num_old_regd_rules = default_regd->n_reg_rules; 436 num_curr_regd_rules = curr_regd->n_reg_rules; 437 num_new_regd_rules = 0; 438 439 /* Find the number of intersecting rules to allocate new regd memory */ 440 for (i = 0; i < num_old_regd_rules; i++) { 441 old_rule = default_regd->reg_rules + i; 442 for (j = 0; j < num_curr_regd_rules; j++) { 443 curr_rule = curr_regd->reg_rules + j; 444 445 if (ath11k_reg_can_intersect(old_rule, curr_rule)) 446 num_new_regd_rules++; 447 } 448 } 449 450 if (!num_new_regd_rules) 451 return NULL; 452 453 new_regd = kzalloc(sizeof(*new_regd) + (num_new_regd_rules * 454 sizeof(struct ieee80211_reg_rule)), 455 GFP_ATOMIC); 456 457 if (!new_regd) 458 return NULL; 459 460 /* We set the new country and dfs region directly and only trim 461 * the freq, power, antenna gain by intersecting with the 462 * default regdomain. Also MAX of the dfs cac timeout is selected. 463 */ 464 new_regd->n_reg_rules = num_new_regd_rules; 465 memcpy(new_regd->alpha2, curr_regd->alpha2, sizeof(new_regd->alpha2)); 466 new_regd->dfs_region = curr_regd->dfs_region; 467 new_rule = new_regd->reg_rules; 468 469 for (i = 0, k = 0; i < num_old_regd_rules; i++) { 470 old_rule = default_regd->reg_rules + i; 471 for (j = 0; j < num_curr_regd_rules; j++) { 472 curr_rule = curr_regd->reg_rules + j; 473 474 if (ath11k_reg_can_intersect(old_rule, curr_rule)) 475 ath11k_reg_intersect_rules(old_rule, curr_rule, 476 (new_rule + k++)); 477 } 478 } 479 return new_regd; 480 } 481 482 static const char * 483 ath11k_reg_get_regdom_str(enum nl80211_dfs_regions dfs_region) 484 { 485 switch (dfs_region) { 486 case NL80211_DFS_FCC: 487 return "FCC"; 488 case NL80211_DFS_ETSI: 489 return "ETSI"; 490 case NL80211_DFS_JP: 491 return "JP"; 492 default: 493 return "UNSET"; 494 } 495 } 496 497 static u16 498 ath11k_reg_adjust_bw(u16 start_freq, u16 end_freq, u16 max_bw) 499 { 500 u16 bw; 501 502 if (end_freq <= start_freq) 503 return 0; 504 505 bw = end_freq - start_freq; 506 bw = min_t(u16, bw, max_bw); 507 508 if (bw >= 80 && bw < 160) 509 bw = 80; 510 else if (bw >= 40 && bw < 80) 511 bw = 40; 512 else if (bw >= 20 && bw < 40) 513 bw = 20; 514 else 515 bw = 0; 516 517 return bw; 518 } 519 520 static void 521 ath11k_reg_update_rule(struct ieee80211_reg_rule *reg_rule, u32 start_freq, 522 u32 end_freq, u32 bw, u32 ant_gain, u32 reg_pwr, 523 u32 reg_flags) 524 { 525 reg_rule->freq_range.start_freq_khz = MHZ_TO_KHZ(start_freq); 526 reg_rule->freq_range.end_freq_khz = MHZ_TO_KHZ(end_freq); 527 reg_rule->freq_range.max_bandwidth_khz = MHZ_TO_KHZ(bw); 528 reg_rule->power_rule.max_antenna_gain = DBI_TO_MBI(ant_gain); 529 reg_rule->power_rule.max_eirp = DBM_TO_MBM(reg_pwr); 530 reg_rule->flags = reg_flags; 531 } 532 533 static void 534 ath11k_reg_update_weather_radar_band(struct ath11k_base *ab, 535 struct ieee80211_regdomain *regd, 536 struct cur_reg_rule *reg_rule, 537 u8 *rule_idx, u32 flags, u16 max_bw) 538 { 539 u32 start_freq; 540 u32 end_freq; 541 u16 bw; 542 u8 i; 543 544 i = *rule_idx; 545 546 /* there might be situations when even the input rule must be dropped */ 547 i--; 548 549 /* frequencies below weather radar */ 550 bw = ath11k_reg_adjust_bw(reg_rule->start_freq, 551 ETSI_WEATHER_RADAR_BAND_LOW, max_bw); 552 if (bw > 0) { 553 i++; 554 555 ath11k_reg_update_rule(regd->reg_rules + i, 556 reg_rule->start_freq, 557 ETSI_WEATHER_RADAR_BAND_LOW, bw, 558 reg_rule->ant_gain, reg_rule->reg_power, 559 flags); 560 561 ath11k_dbg(ab, ATH11K_DBG_REG, 562 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n", 563 i + 1, reg_rule->start_freq, 564 ETSI_WEATHER_RADAR_BAND_LOW, bw, reg_rule->ant_gain, 565 reg_rule->reg_power, regd->reg_rules[i].dfs_cac_ms, 566 flags); 567 } 568 569 /* weather radar frequencies */ 570 start_freq = max_t(u32, reg_rule->start_freq, 571 ETSI_WEATHER_RADAR_BAND_LOW); 572 end_freq = min_t(u32, reg_rule->end_freq, ETSI_WEATHER_RADAR_BAND_HIGH); 573 574 bw = ath11k_reg_adjust_bw(start_freq, end_freq, max_bw); 575 if (bw > 0) { 576 i++; 577 578 ath11k_reg_update_rule(regd->reg_rules + i, start_freq, 579 end_freq, bw, reg_rule->ant_gain, 580 reg_rule->reg_power, flags); 581 582 regd->reg_rules[i].dfs_cac_ms = ETSI_WEATHER_RADAR_BAND_CAC_TIMEOUT; 583 584 ath11k_dbg(ab, ATH11K_DBG_REG, 585 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n", 586 i + 1, start_freq, end_freq, bw, 587 reg_rule->ant_gain, reg_rule->reg_power, 588 regd->reg_rules[i].dfs_cac_ms, flags); 589 } 590 591 /* frequencies above weather radar */ 592 bw = ath11k_reg_adjust_bw(ETSI_WEATHER_RADAR_BAND_HIGH, 593 reg_rule->end_freq, max_bw); 594 if (bw > 0) { 595 i++; 596 597 ath11k_reg_update_rule(regd->reg_rules + i, 598 ETSI_WEATHER_RADAR_BAND_HIGH, 599 reg_rule->end_freq, bw, 600 reg_rule->ant_gain, reg_rule->reg_power, 601 flags); 602 603 ath11k_dbg(ab, ATH11K_DBG_REG, 604 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n", 605 i + 1, ETSI_WEATHER_RADAR_BAND_HIGH, 606 reg_rule->end_freq, bw, reg_rule->ant_gain, 607 reg_rule->reg_power, regd->reg_rules[i].dfs_cac_ms, 608 flags); 609 } 610 611 *rule_idx = i; 612 } 613 614 struct ieee80211_regdomain * 615 ath11k_reg_build_regd(struct ath11k_base *ab, 616 struct cur_regulatory_info *reg_info, bool intersect) 617 { 618 struct ieee80211_regdomain *tmp_regd, *default_regd, *new_regd = NULL; 619 struct cur_reg_rule *reg_rule; 620 u8 i = 0, j = 0; 621 u8 num_rules; 622 u16 max_bw; 623 u32 flags; 624 char alpha2[3]; 625 626 num_rules = reg_info->num_5g_reg_rules + reg_info->num_2g_reg_rules; 627 628 if (!num_rules) 629 goto ret; 630 631 /* Add max additional rules to accommodate weather radar band */ 632 if (reg_info->dfs_region == ATH11K_DFS_REG_ETSI) 633 num_rules += 2; 634 635 tmp_regd = kzalloc(sizeof(*tmp_regd) + 636 (num_rules * sizeof(struct ieee80211_reg_rule)), 637 GFP_ATOMIC); 638 if (!tmp_regd) 639 goto ret; 640 641 memcpy(tmp_regd->alpha2, reg_info->alpha2, REG_ALPHA2_LEN + 1); 642 memcpy(alpha2, reg_info->alpha2, REG_ALPHA2_LEN + 1); 643 alpha2[2] = '\0'; 644 tmp_regd->dfs_region = ath11k_map_fw_dfs_region(reg_info->dfs_region); 645 646 ath11k_dbg(ab, ATH11K_DBG_REG, 647 "\r\nCountry %s, CFG Regdomain %s FW Regdomain %d, num_reg_rules %d\n", 648 alpha2, ath11k_reg_get_regdom_str(tmp_regd->dfs_region), 649 reg_info->dfs_region, num_rules); 650 /* Update reg_rules[] below. Firmware is expected to 651 * send these rules in order(2G rules first and then 5G) 652 */ 653 for (; i < num_rules; i++) { 654 if (reg_info->num_2g_reg_rules && 655 (i < reg_info->num_2g_reg_rules)) { 656 reg_rule = reg_info->reg_rules_2g_ptr + i; 657 max_bw = min_t(u16, reg_rule->max_bw, 658 reg_info->max_bw_2g); 659 flags = 0; 660 } else if (reg_info->num_5g_reg_rules && 661 (j < reg_info->num_5g_reg_rules)) { 662 reg_rule = reg_info->reg_rules_5g_ptr + j++; 663 max_bw = min_t(u16, reg_rule->max_bw, 664 reg_info->max_bw_5g); 665 666 /* FW doesn't pass NL80211_RRF_AUTO_BW flag for 667 * BW Auto correction, we can enable this by default 668 * for all 5G rules here. The regulatory core performs 669 * BW correction if required and applies flags as 670 * per other BW rule flags we pass from here 671 */ 672 flags = NL80211_RRF_AUTO_BW; 673 } else { 674 break; 675 } 676 677 flags |= ath11k_map_fw_reg_flags(reg_rule->flags); 678 679 ath11k_reg_update_rule(tmp_regd->reg_rules + i, 680 reg_rule->start_freq, 681 reg_rule->end_freq, max_bw, 682 reg_rule->ant_gain, reg_rule->reg_power, 683 flags); 684 685 /* Update dfs cac timeout if the dfs domain is ETSI and the 686 * new rule covers weather radar band. 687 * Default value of '0' corresponds to 60s timeout, so no 688 * need to update that for other rules. 689 */ 690 if (flags & NL80211_RRF_DFS && 691 reg_info->dfs_region == ATH11K_DFS_REG_ETSI && 692 (reg_rule->end_freq > ETSI_WEATHER_RADAR_BAND_LOW && 693 reg_rule->start_freq < ETSI_WEATHER_RADAR_BAND_HIGH)){ 694 ath11k_reg_update_weather_radar_band(ab, tmp_regd, 695 reg_rule, &i, 696 flags, max_bw); 697 continue; 698 } 699 700 ath11k_dbg(ab, ATH11K_DBG_REG, 701 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n", 702 i + 1, reg_rule->start_freq, reg_rule->end_freq, 703 max_bw, reg_rule->ant_gain, reg_rule->reg_power, 704 tmp_regd->reg_rules[i].dfs_cac_ms, 705 flags); 706 } 707 708 tmp_regd->n_reg_rules = i; 709 710 if (intersect) { 711 default_regd = ab->default_regd[reg_info->phy_id]; 712 713 /* Get a new regd by intersecting the received regd with 714 * our default regd. 715 */ 716 new_regd = ath11k_regd_intersect(default_regd, tmp_regd); 717 kfree(tmp_regd); 718 if (!new_regd) { 719 ath11k_warn(ab, "Unable to create intersected regdomain\n"); 720 goto ret; 721 } 722 } else { 723 new_regd = tmp_regd; 724 } 725 726 ret: 727 return new_regd; 728 } 729 730 void ath11k_regd_update_work(struct work_struct *work) 731 { 732 struct ath11k *ar = container_of(work, struct ath11k, 733 regd_update_work); 734 int ret; 735 736 ret = ath11k_regd_update(ar); 737 if (ret) { 738 /* Firmware has already moved to the new regd. We need 739 * to maintain channel consistency across FW, Host driver 740 * and userspace. Hence as a fallback mechanism we can set 741 * the prev or default country code to the firmware. 742 */ 743 /* TODO: Implement Fallback Mechanism */ 744 } 745 } 746 747 void ath11k_reg_init(struct ath11k *ar) 748 { 749 ar->hw->wiphy->regulatory_flags = REGULATORY_WIPHY_SELF_MANAGED; 750 ar->hw->wiphy->reg_notifier = ath11k_reg_notifier; 751 } 752 753 void ath11k_reg_free(struct ath11k_base *ab) 754 { 755 int i; 756 757 for (i = 0; i < ab->hw_params.max_radios; i++) { 758 kfree(ab->default_regd[i]); 759 kfree(ab->new_regd[i]); 760 } 761 } 762