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 22static 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 32static 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 47static void 48ath11k_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 107int 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 229static 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 242int 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; 305err: 306 ath11k_warn(ab, "failed to perform regd update : %d\n", ret); 307 return ret; 308} 309 310static enum nl80211_dfs_regions 311ath11k_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 328static 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 356static 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 366static bool 367ath11k_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 394static 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 if ((rule1->flags & NL80211_RRF_PSD) && (rule2->flags & NL80211_RRF_PSD)) 429 new_rule->psd = min_t(s8, rule1->psd, rule2->psd); 430 else 431 new_rule->flags &= ~NL80211_RRF_PSD; 432 433 /* To be safe, lts use the max cac timeout of both rules */ 434 new_rule->dfs_cac_ms = max_t(u32, rule1->dfs_cac_ms, 435 rule2->dfs_cac_ms); 436} 437 438static struct ieee80211_regdomain * 439ath11k_regd_intersect(struct ieee80211_regdomain *default_regd, 440 struct ieee80211_regdomain *curr_regd) 441{ 442 u8 num_old_regd_rules, num_curr_regd_rules, num_new_regd_rules; 443 struct ieee80211_reg_rule *old_rule, *curr_rule, *new_rule; 444 struct ieee80211_regdomain *new_regd = NULL; 445 u8 i, j, k; 446 447 num_old_regd_rules = default_regd->n_reg_rules; 448 num_curr_regd_rules = curr_regd->n_reg_rules; 449 num_new_regd_rules = 0; 450 451 /* Find the number of intersecting rules to allocate new regd memory */ 452 for (i = 0; i < num_old_regd_rules; i++) { 453 old_rule = default_regd->reg_rules + i; 454 for (j = 0; j < num_curr_regd_rules; j++) { 455 curr_rule = curr_regd->reg_rules + j; 456 457 if (ath11k_reg_can_intersect(old_rule, curr_rule)) 458 num_new_regd_rules++; 459 } 460 } 461 462 if (!num_new_regd_rules) 463 return NULL; 464 465 new_regd = kzalloc(sizeof(*new_regd) + (num_new_regd_rules * 466 sizeof(struct ieee80211_reg_rule)), 467 GFP_ATOMIC); 468 469 if (!new_regd) 470 return NULL; 471 472 /* We set the new country and dfs region directly and only trim 473 * the freq, power, antenna gain by intersecting with the 474 * default regdomain. Also MAX of the dfs cac timeout is selected. 475 */ 476 new_regd->n_reg_rules = num_new_regd_rules; 477 memcpy(new_regd->alpha2, curr_regd->alpha2, sizeof(new_regd->alpha2)); 478 new_regd->dfs_region = curr_regd->dfs_region; 479 new_rule = new_regd->reg_rules; 480 481 for (i = 0, k = 0; i < num_old_regd_rules; i++) { 482 old_rule = default_regd->reg_rules + i; 483 for (j = 0; j < num_curr_regd_rules; j++) { 484 curr_rule = curr_regd->reg_rules + j; 485 486 if (ath11k_reg_can_intersect(old_rule, curr_rule)) 487 ath11k_reg_intersect_rules(old_rule, curr_rule, 488 (new_rule + k++)); 489 } 490 } 491 return new_regd; 492} 493 494static const char * 495ath11k_reg_get_regdom_str(enum nl80211_dfs_regions dfs_region) 496{ 497 switch (dfs_region) { 498 case NL80211_DFS_FCC: 499 return "FCC"; 500 case NL80211_DFS_ETSI: 501 return "ETSI"; 502 case NL80211_DFS_JP: 503 return "JP"; 504 default: 505 return "UNSET"; 506 } 507} 508 509static u16 510ath11k_reg_adjust_bw(u16 start_freq, u16 end_freq, u16 max_bw) 511{ 512 u16 bw; 513 514 if (end_freq <= start_freq) 515 return 0; 516 517 bw = end_freq - start_freq; 518 bw = min_t(u16, bw, max_bw); 519 520 if (bw >= 80 && bw < 160) 521 bw = 80; 522 else if (bw >= 40 && bw < 80) 523 bw = 40; 524 else if (bw >= 20 && bw < 40) 525 bw = 20; 526 else 527 bw = 0; 528 529 return bw; 530} 531 532static void 533ath11k_reg_update_rule(struct ieee80211_reg_rule *reg_rule, u32 start_freq, 534 u32 end_freq, u32 bw, u32 ant_gain, u32 reg_pwr, 535 s8 psd, u32 reg_flags) 536{ 537 reg_rule->freq_range.start_freq_khz = MHZ_TO_KHZ(start_freq); 538 reg_rule->freq_range.end_freq_khz = MHZ_TO_KHZ(end_freq); 539 reg_rule->freq_range.max_bandwidth_khz = MHZ_TO_KHZ(bw); 540 reg_rule->power_rule.max_antenna_gain = DBI_TO_MBI(ant_gain); 541 reg_rule->power_rule.max_eirp = DBM_TO_MBM(reg_pwr); 542 reg_rule->psd = psd; 543 reg_rule->flags = reg_flags; 544} 545 546static void 547ath11k_reg_update_weather_radar_band(struct ath11k_base *ab, 548 struct ieee80211_regdomain *regd, 549 struct cur_reg_rule *reg_rule, 550 u8 *rule_idx, u32 flags, u16 max_bw) 551{ 552 u32 start_freq; 553 u32 end_freq; 554 u16 bw; 555 u8 i; 556 557 i = *rule_idx; 558 559 /* there might be situations when even the input rule must be dropped */ 560 i--; 561 562 /* frequencies below weather radar */ 563 bw = ath11k_reg_adjust_bw(reg_rule->start_freq, 564 ETSI_WEATHER_RADAR_BAND_LOW, max_bw); 565 if (bw > 0) { 566 i++; 567 568 ath11k_reg_update_rule(regd->reg_rules + i, 569 reg_rule->start_freq, 570 ETSI_WEATHER_RADAR_BAND_LOW, bw, 571 reg_rule->ant_gain, reg_rule->reg_power, 572 reg_rule->psd_eirp, flags); 573 574 ath11k_dbg(ab, ATH11K_DBG_REG, 575 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n", 576 i + 1, reg_rule->start_freq, 577 ETSI_WEATHER_RADAR_BAND_LOW, bw, reg_rule->ant_gain, 578 reg_rule->reg_power, regd->reg_rules[i].dfs_cac_ms, 579 flags); 580 } 581 582 /* weather radar frequencies */ 583 start_freq = max_t(u32, reg_rule->start_freq, 584 ETSI_WEATHER_RADAR_BAND_LOW); 585 end_freq = min_t(u32, reg_rule->end_freq, ETSI_WEATHER_RADAR_BAND_HIGH); 586 587 bw = ath11k_reg_adjust_bw(start_freq, end_freq, max_bw); 588 if (bw > 0) { 589 i++; 590 591 ath11k_reg_update_rule(regd->reg_rules + i, start_freq, 592 end_freq, bw, reg_rule->ant_gain, 593 reg_rule->reg_power, reg_rule->psd_eirp, flags); 594 595 regd->reg_rules[i].dfs_cac_ms = ETSI_WEATHER_RADAR_BAND_CAC_TIMEOUT; 596 597 ath11k_dbg(ab, ATH11K_DBG_REG, 598 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n", 599 i + 1, start_freq, end_freq, bw, 600 reg_rule->ant_gain, reg_rule->reg_power, 601 regd->reg_rules[i].dfs_cac_ms, flags); 602 } 603 604 /* frequencies above weather radar */ 605 bw = ath11k_reg_adjust_bw(ETSI_WEATHER_RADAR_BAND_HIGH, 606 reg_rule->end_freq, max_bw); 607 if (bw > 0) { 608 i++; 609 610 ath11k_reg_update_rule(regd->reg_rules + i, 611 ETSI_WEATHER_RADAR_BAND_HIGH, 612 reg_rule->end_freq, bw, 613 reg_rule->ant_gain, reg_rule->reg_power, 614 reg_rule->psd_eirp, flags); 615 616 ath11k_dbg(ab, ATH11K_DBG_REG, 617 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n", 618 i + 1, ETSI_WEATHER_RADAR_BAND_HIGH, 619 reg_rule->end_freq, bw, reg_rule->ant_gain, 620 reg_rule->reg_power, regd->reg_rules[i].dfs_cac_ms, 621 flags); 622 } 623 624 *rule_idx = i; 625} 626 627enum wmi_reg_6ghz_ap_type 628ath11k_reg_ap_pwr_convert(enum ieee80211_ap_reg_power power_type) 629{ 630 switch (power_type) { 631 case IEEE80211_REG_LPI_AP: 632 return WMI_REG_INDOOR_AP; 633 case IEEE80211_REG_SP_AP: 634 return WMI_REG_STANDARD_POWER_AP; 635 case IEEE80211_REG_VLP_AP: 636 return WMI_REG_VERY_LOW_POWER_AP; 637 default: 638 return WMI_REG_MAX_AP_TYPE; 639 } 640} 641 642struct ieee80211_regdomain * 643ath11k_reg_build_regd(struct ath11k_base *ab, 644 struct cur_regulatory_info *reg_info, bool intersect, 645 enum wmi_vdev_type vdev_type, 646 enum ieee80211_ap_reg_power power_type) 647{ 648 struct ieee80211_regdomain *tmp_regd, *default_regd, *new_regd = NULL; 649 struct cur_reg_rule *reg_rule, *reg_rule_6ghz; 650 u8 i = 0, j = 0, k = 0; 651 u8 num_rules; 652 u16 max_bw; 653 u32 flags, reg_6ghz_number, max_bw_6ghz; 654 char alpha2[3]; 655 656 num_rules = reg_info->num_5ghz_reg_rules + reg_info->num_2ghz_reg_rules; 657 658 if (reg_info->is_ext_reg_event) { 659 if (vdev_type == WMI_VDEV_TYPE_STA) { 660 enum wmi_reg_6ghz_ap_type ap_type; 661 662 ap_type = ath11k_reg_ap_pwr_convert(power_type); 663 664 if (ap_type == WMI_REG_MAX_AP_TYPE) 665 ap_type = WMI_REG_INDOOR_AP; 666 667 reg_6ghz_number = reg_info->num_6ghz_rules_client 668 [ap_type][WMI_REG_DEFAULT_CLIENT]; 669 670 if (reg_6ghz_number == 0) { 671 ap_type = WMI_REG_INDOOR_AP; 672 reg_6ghz_number = reg_info->num_6ghz_rules_client 673 [ap_type][WMI_REG_DEFAULT_CLIENT]; 674 } 675 676 reg_rule_6ghz = reg_info->reg_rules_6ghz_client_ptr 677 [ap_type][WMI_REG_DEFAULT_CLIENT]; 678 max_bw_6ghz = reg_info->max_bw_6ghz_client 679 [ap_type][WMI_REG_DEFAULT_CLIENT]; 680 } else { 681 reg_6ghz_number = reg_info->num_6ghz_rules_ap[WMI_REG_INDOOR_AP]; 682 reg_rule_6ghz = 683 reg_info->reg_rules_6ghz_ap_ptr[WMI_REG_INDOOR_AP]; 684 max_bw_6ghz = reg_info->max_bw_6ghz_ap[WMI_REG_INDOOR_AP]; 685 } 686 687 num_rules += reg_6ghz_number; 688 } 689 690 if (!num_rules) 691 goto ret; 692 693 /* Add max additional rules to accommodate weather radar band */ 694 if (reg_info->dfs_region == ATH11K_DFS_REG_ETSI) 695 num_rules += 2; 696 697 tmp_regd = kzalloc(sizeof(*tmp_regd) + 698 (num_rules * sizeof(struct ieee80211_reg_rule)), 699 GFP_ATOMIC); 700 if (!tmp_regd) 701 goto ret; 702 703 memcpy(tmp_regd->alpha2, reg_info->alpha2, REG_ALPHA2_LEN + 1); 704 memcpy(alpha2, reg_info->alpha2, REG_ALPHA2_LEN + 1); 705 alpha2[2] = '\0'; 706 tmp_regd->dfs_region = ath11k_map_fw_dfs_region(reg_info->dfs_region); 707 708 ath11k_dbg(ab, ATH11K_DBG_REG, 709 "Country %s, CFG Regdomain %s FW Regdomain %d, num_reg_rules %d\n", 710 alpha2, ath11k_reg_get_regdom_str(tmp_regd->dfs_region), 711 reg_info->dfs_region, num_rules); 712 /* Update reg_rules[] below. Firmware is expected to 713 * send these rules in order(2 GHz rules first and then 5 GHz) 714 */ 715 for (; i < num_rules; i++) { 716 if (reg_info->num_2ghz_reg_rules && 717 (i < reg_info->num_2ghz_reg_rules)) { 718 reg_rule = reg_info->reg_rules_2ghz_ptr + i; 719 max_bw = min_t(u16, reg_rule->max_bw, 720 reg_info->max_bw_2ghz); 721 flags = 0; 722 } else if (reg_info->num_5ghz_reg_rules && 723 (j < reg_info->num_5ghz_reg_rules)) { 724 reg_rule = reg_info->reg_rules_5ghz_ptr + j++; 725 max_bw = min_t(u16, reg_rule->max_bw, 726 reg_info->max_bw_5ghz); 727 728 /* FW doesn't pass NL80211_RRF_AUTO_BW flag for 729 * BW Auto correction, we can enable this by default 730 * for all 5G rules here. The regulatory core performs 731 * BW correction if required and applies flags as 732 * per other BW rule flags we pass from here 733 */ 734 flags = NL80211_RRF_AUTO_BW; 735 } else if (reg_info->is_ext_reg_event && reg_6ghz_number && 736 k < reg_6ghz_number) { 737 reg_rule = reg_rule_6ghz + k++; 738 max_bw = min_t(u16, reg_rule->max_bw, max_bw_6ghz); 739 flags = NL80211_RRF_AUTO_BW; 740 if (reg_rule->psd_flag) 741 flags |= NL80211_RRF_PSD; 742 } else { 743 break; 744 } 745 746 flags |= ath11k_map_fw_reg_flags(reg_rule->flags); 747 flags |= ath11k_map_fw_phy_flags(reg_info->phybitmap); 748 749 ath11k_reg_update_rule(tmp_regd->reg_rules + i, 750 reg_rule->start_freq, 751 reg_rule->end_freq, max_bw, 752 reg_rule->ant_gain, reg_rule->reg_power, 753 reg_rule->psd_eirp, flags); 754 755 /* Update dfs cac timeout if the dfs domain is ETSI and the 756 * new rule covers weather radar band. 757 * Default value of '0' corresponds to 60s timeout, so no 758 * need to update that for other rules. 759 */ 760 if (flags & NL80211_RRF_DFS && 761 reg_info->dfs_region == ATH11K_DFS_REG_ETSI && 762 (reg_rule->end_freq > ETSI_WEATHER_RADAR_BAND_LOW && 763 reg_rule->start_freq < ETSI_WEATHER_RADAR_BAND_HIGH)){ 764 ath11k_reg_update_weather_radar_band(ab, tmp_regd, 765 reg_rule, &i, 766 flags, max_bw); 767 continue; 768 } 769 770 if (reg_info->is_ext_reg_event) { 771 ath11k_dbg(ab, ATH11K_DBG_REG, 772 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d) (%d, %d)\n", 773 i + 1, reg_rule->start_freq, reg_rule->end_freq, 774 max_bw, reg_rule->ant_gain, reg_rule->reg_power, 775 tmp_regd->reg_rules[i].dfs_cac_ms, flags, 776 reg_rule->psd_flag, reg_rule->psd_eirp); 777 } else { 778 ath11k_dbg(ab, ATH11K_DBG_REG, 779 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n", 780 i + 1, reg_rule->start_freq, reg_rule->end_freq, 781 max_bw, reg_rule->ant_gain, reg_rule->reg_power, 782 tmp_regd->reg_rules[i].dfs_cac_ms, 783 flags); 784 } 785 } 786 787 tmp_regd->n_reg_rules = i; 788 789 if (intersect) { 790 default_regd = ab->default_regd[reg_info->phy_id]; 791 792 /* Get a new regd by intersecting the received regd with 793 * our default regd. 794 */ 795 new_regd = ath11k_regd_intersect(default_regd, tmp_regd); 796 kfree(tmp_regd); 797 if (!new_regd) { 798 ath11k_warn(ab, "Unable to create intersected regdomain\n"); 799 goto ret; 800 } 801 } else { 802 new_regd = tmp_regd; 803 } 804 805ret: 806 return new_regd; 807} 808 809static bool ath11k_reg_is_world_alpha(char *alpha) 810{ 811 if (alpha[0] == '0' && alpha[1] == '0') 812 return true; 813 814 if (alpha[0] == 'n' && alpha[1] == 'a') 815 return true; 816 817 return false; 818} 819 820static enum wmi_vdev_type ath11k_reg_get_ar_vdev_type(struct ath11k *ar) 821{ 822 struct ath11k_vif *arvif; 823 824 /* Currently each struct ath11k maps to one struct ieee80211_hw/wiphy 825 * and one struct ieee80211_regdomain, so it could only store one group 826 * reg rules. It means multi-interface concurrency in the same ath11k is 827 * not support for the regdomain. So get the vdev type of the first entry 828 * now. After concurrency support for the regdomain, this should change. 829 */ 830 arvif = list_first_entry_or_null(&ar->arvifs, struct ath11k_vif, list); 831 if (arvif) 832 return arvif->vdev_type; 833 834 return WMI_VDEV_TYPE_UNSPEC; 835} 836 837int ath11k_reg_handle_chan_list(struct ath11k_base *ab, 838 struct cur_regulatory_info *reg_info, 839 enum ieee80211_ap_reg_power power_type) 840{ 841 struct ieee80211_regdomain *regd; 842 bool intersect = false; 843 int pdev_idx; 844 struct ath11k *ar; 845 enum wmi_vdev_type vdev_type; 846 847 ath11k_dbg(ab, ATH11K_DBG_WMI, "event reg handle chan list"); 848 849 if (reg_info->status_code != REG_SET_CC_STATUS_PASS) { 850 /* In case of failure to set the requested ctry, 851 * fw retains the current regd. We print a failure info 852 * and return from here. 853 */ 854 ath11k_warn(ab, "Failed to set the requested Country regulatory setting\n"); 855 return -EINVAL; 856 } 857 858 pdev_idx = reg_info->phy_id; 859 860 /* Avoid default reg rule updates sent during FW recovery if 861 * it is already available 862 */ 863 spin_lock_bh(&ab->base_lock); 864 if (test_bit(ATH11K_FLAG_RECOVERY, &ab->dev_flags) && 865 ab->default_regd[pdev_idx]) { 866 spin_unlock_bh(&ab->base_lock); 867 goto retfail; 868 } 869 spin_unlock_bh(&ab->base_lock); 870 871 if (pdev_idx >= ab->num_radios) { 872 /* Process the event for phy0 only if single_pdev_only 873 * is true. If pdev_idx is valid but not 0, discard the 874 * event. Otherwise, it goes to fallback. In either case 875 * ath11k_reg_reset_info() needs to be called to avoid 876 * memory leak issue. 877 */ 878 ath11k_reg_reset_info(reg_info); 879 880 if (ab->hw_params.single_pdev_only && 881 pdev_idx < ab->hw_params.num_rxmda_per_pdev) 882 return 0; 883 goto fallback; 884 } 885 886 /* Avoid multiple overwrites to default regd, during core 887 * stop-start after mac registration. 888 */ 889 if (ab->default_regd[pdev_idx] && !ab->new_regd[pdev_idx] && 890 !memcmp((char *)ab->default_regd[pdev_idx]->alpha2, 891 (char *)reg_info->alpha2, 2)) 892 goto retfail; 893 894 /* Intersect new rules with default regd if a new country setting was 895 * requested, i.e a default regd was already set during initialization 896 * and the regd coming from this event has a valid country info. 897 */ 898 if (ab->default_regd[pdev_idx] && 899 !ath11k_reg_is_world_alpha((char *) 900 ab->default_regd[pdev_idx]->alpha2) && 901 !ath11k_reg_is_world_alpha((char *)reg_info->alpha2)) 902 intersect = true; 903 904 ar = ab->pdevs[pdev_idx].ar; 905 vdev_type = ath11k_reg_get_ar_vdev_type(ar); 906 907 ath11k_dbg(ab, ATH11K_DBG_WMI, 908 "wmi handle chan list power type %d vdev type %d intersect %d\n", 909 power_type, vdev_type, intersect); 910 911 regd = ath11k_reg_build_regd(ab, reg_info, intersect, vdev_type, power_type); 912 if (!regd) { 913 ath11k_warn(ab, "failed to build regd from reg_info\n"); 914 goto fallback; 915 } 916 917 if (power_type == IEEE80211_REG_UNSET_AP) { 918 ath11k_reg_reset_info(&ab->reg_info_store[pdev_idx]); 919 ab->reg_info_store[pdev_idx] = *reg_info; 920 } 921 922 spin_lock_bh(&ab->base_lock); 923 if (ab->default_regd[pdev_idx]) { 924 /* The initial rules from FW after WMI Init is to build 925 * the default regd. From then on, any rules updated for 926 * the pdev could be due to user reg changes. 927 * Free previously built regd before assigning the newly 928 * generated regd to ar. NULL pointer handling will be 929 * taken care by kfree itself. 930 */ 931 ar = ab->pdevs[pdev_idx].ar; 932 kfree(ab->new_regd[pdev_idx]); 933 ab->new_regd[pdev_idx] = regd; 934 queue_work(ab->workqueue, &ar->regd_update_work); 935 } else { 936 /* This regd would be applied during mac registration and is 937 * held constant throughout for regd intersection purpose 938 */ 939 ab->default_regd[pdev_idx] = regd; 940 } 941 ab->dfs_region = reg_info->dfs_region; 942 spin_unlock_bh(&ab->base_lock); 943 944 return 0; 945 946fallback: 947 /* Fallback to older reg (by sending previous country setting 948 * again if fw has succeeded and we failed to process here. 949 * The Regdomain should be uniform across driver and fw. Since the 950 * FW has processed the command and sent a success status, we expect 951 * this function to succeed as well. If it doesn't, CTRY needs to be 952 * reverted at the fw and the old SCAN_CHAN_LIST cmd needs to be sent. 953 */ 954 /* TODO: This is rare, but still should also be handled */ 955 WARN_ON(1); 956 957retfail: 958 959 return -EINVAL; 960} 961 962void ath11k_regd_update_work(struct work_struct *work) 963{ 964 struct ath11k *ar = container_of(work, struct ath11k, 965 regd_update_work); 966 int ret; 967 968 ret = ath11k_regd_update(ar); 969 if (ret) { 970 /* Firmware has already moved to the new regd. We need 971 * to maintain channel consistency across FW, Host driver 972 * and userspace. Hence as a fallback mechanism we can set 973 * the prev or default country code to the firmware. 974 */ 975 /* TODO: Implement Fallback Mechanism */ 976 } 977} 978 979void ath11k_reg_init(struct ath11k *ar) 980{ 981 ar->hw->wiphy->regulatory_flags = REGULATORY_WIPHY_SELF_MANAGED; 982 ar->hw->wiphy->reg_notifier = ath11k_reg_notifier; 983} 984 985void ath11k_reg_reset_info(struct cur_regulatory_info *reg_info) 986{ 987 int i, j; 988 989 if (!reg_info) 990 return; 991 992 kfree(reg_info->reg_rules_2ghz_ptr); 993 kfree(reg_info->reg_rules_5ghz_ptr); 994 995 for (i = 0; i < WMI_REG_CURRENT_MAX_AP_TYPE; i++) { 996 kfree(reg_info->reg_rules_6ghz_ap_ptr[i]); 997 998 for (j = 0; j < WMI_REG_MAX_CLIENT_TYPE; j++) 999 kfree(reg_info->reg_rules_6ghz_client_ptr[i][j]); 1000 } 1001 1002 memset(reg_info, 0, sizeof(*reg_info)); 1003} 1004 1005void ath11k_reg_free(struct ath11k_base *ab) 1006{ 1007 int i; 1008 1009 for (i = 0; i < ab->num_radios; i++) 1010 ath11k_reg_reset_info(&ab->reg_info_store[i]); 1011 1012 kfree(ab->reg_info_store); 1013 ab->reg_info_store = NULL; 1014 1015 for (i = 0; i < ab->hw_params.max_radios; i++) { 1016 kfree(ab->default_regd[i]); 1017 kfree(ab->new_regd[i]); 1018 } 1019} 1020