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linux-6.19.14/drivers/net/wireless/ath/ath11k/reg.c
1// SPDX-License-Identifier: BSD-3-Clause-Clear 2/* 3 * Copyright (c) 2018-2019 The Linux Foundation. All rights reserved. 4 * Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries. 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 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 if (request->initiator == NL80211_REGDOM_SET_BY_DRIVER) { 59 ath11k_dbg(ar->ab, ATH11K_DBG_REG, 60 "driver initiated regd update\n"); 61 if (ar->state != ATH11K_STATE_ON) 62 return; 63 64 ret = ath11k_reg_update_chan_list(ar, true); 65 if (ret) 66 ath11k_warn(ar->ab, "failed to update channel list: %d\n", ret); 67 68 return; 69 } 70 71 /* Currently supporting only General User Hints. Cell base user 72 * hints to be handled later. 73 * Hints from other sources like Core, Beacons are not expected for 74 * self managed wiphy's 75 */ 76 if (!(request->initiator == NL80211_REGDOM_SET_BY_USER && 77 request->user_reg_hint_type == NL80211_USER_REG_HINT_USER)) { 78 ath11k_warn(ar->ab, "Unexpected Regulatory event for this wiphy\n"); 79 return; 80 } 81 82 if (!IS_ENABLED(CONFIG_ATH_REG_DYNAMIC_USER_REG_HINTS)) { 83 ath11k_dbg(ar->ab, ATH11K_DBG_REG, 84 "Country Setting is not allowed\n"); 85 return; 86 } 87 88 if (!ath11k_regdom_changes(ar, request->alpha2)) { 89 ath11k_dbg(ar->ab, ATH11K_DBG_REG, "Country is already set\n"); 90 return; 91 } 92 93 /* Set the country code to the firmware and will receive 94 * the WMI_REG_CHAN_LIST_CC EVENT for updating the 95 * reg info 96 */ 97 if (ar->ab->hw_params.current_cc_support) { 98 memcpy(&ar->alpha2, request->alpha2, 2); 99 ret = ath11k_reg_set_cc(ar); 100 if (ret) 101 ath11k_warn(ar->ab, 102 "failed set current country code: %d\n", ret); 103 } else { 104 init_country_param.flags = ALPHA_IS_SET; 105 memcpy(&init_country_param.cc_info.alpha2, request->alpha2, 2); 106 init_country_param.cc_info.alpha2[2] = 0; 107 108 ret = ath11k_wmi_send_init_country_cmd(ar, init_country_param); 109 if (ret) 110 ath11k_warn(ar->ab, 111 "INIT Country code set to fw failed : %d\n", ret); 112 } 113 114 ath11k_mac_11d_scan_stop(ar); 115 ar->regdom_set_by_user = true; 116} 117 118int ath11k_reg_update_chan_list(struct ath11k *ar, bool wait) 119{ 120 struct ieee80211_supported_band **bands; 121 struct scan_chan_list_params *params; 122 struct ieee80211_channel *channel; 123 struct ieee80211_hw *hw = ar->hw; 124 struct channel_param *ch; 125 enum nl80211_band band; 126 int num_channels = 0; 127 int i, ret = 0; 128 129 if (ar->state == ATH11K_STATE_RESTARTING) 130 return 0; 131 132 bands = hw->wiphy->bands; 133 for (band = 0; band < NUM_NL80211_BANDS; band++) { 134 if (!bands[band]) 135 continue; 136 137 for (i = 0; i < bands[band]->n_channels; i++) { 138 if (bands[band]->channels[i].flags & 139 IEEE80211_CHAN_DISABLED) 140 continue; 141 142 num_channels++; 143 } 144 } 145 146 if (WARN_ON(!num_channels)) 147 return -EINVAL; 148 149 params = kzalloc(struct_size(params, ch_param, num_channels), 150 GFP_KERNEL); 151 if (!params) 152 return -ENOMEM; 153 154 params->pdev_id = ar->pdev->pdev_id; 155 params->nallchans = num_channels; 156 157 ch = params->ch_param; 158 159 for (band = 0; band < NUM_NL80211_BANDS; band++) { 160 if (!bands[band]) 161 continue; 162 163 for (i = 0; i < bands[band]->n_channels; i++) { 164 channel = &bands[band]->channels[i]; 165 166 if (channel->flags & IEEE80211_CHAN_DISABLED) 167 continue; 168 169 /* TODO: Set to true/false based on some condition? */ 170 ch->allow_ht = true; 171 ch->allow_vht = true; 172 ch->allow_he = true; 173 174 ch->dfs_set = 175 !!(channel->flags & IEEE80211_CHAN_RADAR); 176 ch->is_chan_passive = !!(channel->flags & 177 IEEE80211_CHAN_NO_IR); 178 ch->is_chan_passive |= ch->dfs_set; 179 ch->mhz = channel->center_freq; 180 ch->cfreq1 = channel->center_freq; 181 ch->minpower = 0; 182 ch->maxpower = channel->max_power * 2; 183 ch->maxregpower = channel->max_reg_power * 2; 184 ch->antennamax = channel->max_antenna_gain * 2; 185 186 /* TODO: Use appropriate phymodes */ 187 if (channel->band == NL80211_BAND_2GHZ) 188 ch->phy_mode = MODE_11G; 189 else 190 ch->phy_mode = MODE_11A; 191 192 if (channel->band == NL80211_BAND_6GHZ && 193 cfg80211_channel_is_psc(channel)) 194 ch->psc_channel = true; 195 196 ath11k_dbg(ar->ab, ATH11K_DBG_WMI, 197 "mac channel [%d/%d] freq %d maxpower %d regpower %d antenna %d mode %d\n", 198 i, params->nallchans, 199 ch->mhz, ch->maxpower, ch->maxregpower, 200 ch->antennamax, ch->phy_mode); 201 202 ch++; 203 /* TODO: use quarrter/half rate, cfreq12, dfs_cfreq2 204 * set_agile, reg_class_idx 205 */ 206 } 207 } 208 209 if (wait) { 210 spin_lock_bh(&ar->data_lock); 211 list_add_tail(¶ms->list, &ar->channel_update_queue); 212 spin_unlock_bh(&ar->data_lock); 213 214 queue_work(ar->ab->workqueue, &ar->channel_update_work); 215 216 return 0; 217 } 218 219 ret = ath11k_wmi_send_scan_chan_list_cmd(ar, params); 220 kfree(params); 221 222 return ret; 223} 224 225static void ath11k_copy_regd(struct ieee80211_regdomain *regd_orig, 226 struct ieee80211_regdomain *regd_copy) 227{ 228 u8 i; 229 230 /* The caller should have checked error conditions */ 231 memcpy(regd_copy, regd_orig, sizeof(*regd_orig)); 232 233 for (i = 0; i < regd_orig->n_reg_rules; i++) 234 memcpy(®d_copy->reg_rules[i], ®d_orig->reg_rules[i], 235 sizeof(struct ieee80211_reg_rule)); 236} 237 238int ath11k_regd_update(struct ath11k *ar) 239{ 240 struct ieee80211_regdomain *regd, *regd_copy = NULL; 241 int ret, regd_len, pdev_id; 242 struct ath11k_base *ab; 243 244 ab = ar->ab; 245 pdev_id = ar->pdev_idx; 246 247 spin_lock_bh(&ab->base_lock); 248 249 /* Prefer the latest regd update over default if it's available */ 250 if (ab->new_regd[pdev_id]) { 251 regd = ab->new_regd[pdev_id]; 252 } else { 253 /* Apply the regd received during init through 254 * WMI_REG_CHAN_LIST_CC event. In case of failure to 255 * receive the regd, initialize with a default world 256 * regulatory. 257 */ 258 if (ab->default_regd[pdev_id]) { 259 regd = ab->default_regd[pdev_id]; 260 } else { 261 ath11k_warn(ab, 262 "failed to receive default regd during init\n"); 263 regd = (struct ieee80211_regdomain *)&ath11k_world_regd; 264 } 265 } 266 267 if (!regd) { 268 ret = -EINVAL; 269 spin_unlock_bh(&ab->base_lock); 270 goto err; 271 } 272 273 regd_len = sizeof(*regd) + (regd->n_reg_rules * 274 sizeof(struct ieee80211_reg_rule)); 275 276 regd_copy = kzalloc(regd_len, GFP_ATOMIC); 277 if (regd_copy) 278 ath11k_copy_regd(regd, regd_copy); 279 280 spin_unlock_bh(&ab->base_lock); 281 282 if (!regd_copy) { 283 ret = -ENOMEM; 284 goto err; 285 } 286 287 ret = regulatory_set_wiphy_regd(ar->hw->wiphy, regd_copy); 288 289 kfree(regd_copy); 290 291 if (ret) 292 goto err; 293 294 return 0; 295err: 296 ath11k_warn(ab, "failed to perform regd update : %d\n", ret); 297 return ret; 298} 299 300static enum nl80211_dfs_regions 301ath11k_map_fw_dfs_region(enum ath11k_dfs_region dfs_region) 302{ 303 switch (dfs_region) { 304 case ATH11K_DFS_REG_FCC: 305 case ATH11K_DFS_REG_CN: 306 return NL80211_DFS_FCC; 307 case ATH11K_DFS_REG_ETSI: 308 case ATH11K_DFS_REG_KR: 309 return NL80211_DFS_ETSI; 310 case ATH11K_DFS_REG_MKK: 311 case ATH11K_DFS_REG_MKK_N: 312 return NL80211_DFS_JP; 313 default: 314 return NL80211_DFS_UNSET; 315 } 316} 317 318static u32 ath11k_map_fw_reg_flags(u16 reg_flags) 319{ 320 u32 flags = 0; 321 322 if (reg_flags & REGULATORY_CHAN_NO_IR) 323 flags = NL80211_RRF_NO_IR; 324 325 if (reg_flags & REGULATORY_CHAN_RADAR) 326 flags |= NL80211_RRF_DFS; 327 328 if (reg_flags & REGULATORY_CHAN_NO_OFDM) 329 flags |= NL80211_RRF_NO_OFDM; 330 331 if (reg_flags & REGULATORY_CHAN_INDOOR_ONLY) 332 flags |= NL80211_RRF_NO_OUTDOOR; 333 334 if (reg_flags & REGULATORY_CHAN_NO_HT40) 335 flags |= NL80211_RRF_NO_HT40; 336 337 if (reg_flags & REGULATORY_CHAN_NO_80MHZ) 338 flags |= NL80211_RRF_NO_80MHZ; 339 340 if (reg_flags & REGULATORY_CHAN_NO_160MHZ) 341 flags |= NL80211_RRF_NO_160MHZ; 342 343 return flags; 344} 345 346static u32 ath11k_map_fw_phy_flags(u32 phy_flags) 347{ 348 u32 flags = 0; 349 350 if (phy_flags & ATH11K_REG_PHY_BITMAP_NO11AX) 351 flags |= NL80211_RRF_NO_HE; 352 353 return flags; 354} 355 356static bool 357ath11k_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 384static 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 if ((rule1->flags & NL80211_RRF_PSD) && (rule2->flags & NL80211_RRF_PSD)) 419 new_rule->psd = min_t(s8, rule1->psd, rule2->psd); 420 else 421 new_rule->flags &= ~NL80211_RRF_PSD; 422 423 /* To be safe, lts use the max cac timeout of both rules */ 424 new_rule->dfs_cac_ms = max_t(u32, rule1->dfs_cac_ms, 425 rule2->dfs_cac_ms); 426} 427 428static struct ieee80211_regdomain * 429ath11k_regd_intersect(struct ieee80211_regdomain *default_regd, 430 struct ieee80211_regdomain *curr_regd) 431{ 432 u8 num_old_regd_rules, num_curr_regd_rules, num_new_regd_rules; 433 struct ieee80211_reg_rule *old_rule, *curr_rule, *new_rule; 434 struct ieee80211_regdomain *new_regd = NULL; 435 u8 i, j, k; 436 437 num_old_regd_rules = default_regd->n_reg_rules; 438 num_curr_regd_rules = curr_regd->n_reg_rules; 439 num_new_regd_rules = 0; 440 441 /* Find the number of intersecting rules to allocate new regd memory */ 442 for (i = 0; i < num_old_regd_rules; i++) { 443 old_rule = default_regd->reg_rules + i; 444 for (j = 0; j < num_curr_regd_rules; j++) { 445 curr_rule = curr_regd->reg_rules + j; 446 447 if (ath11k_reg_can_intersect(old_rule, curr_rule)) 448 num_new_regd_rules++; 449 } 450 } 451 452 if (!num_new_regd_rules) 453 return NULL; 454 455 new_regd = kzalloc(sizeof(*new_regd) + (num_new_regd_rules * 456 sizeof(struct ieee80211_reg_rule)), 457 GFP_ATOMIC); 458 459 if (!new_regd) 460 return NULL; 461 462 /* We set the new country and dfs region directly and only trim 463 * the freq, power, antenna gain by intersecting with the 464 * default regdomain. Also MAX of the dfs cac timeout is selected. 465 */ 466 new_regd->n_reg_rules = num_new_regd_rules; 467 memcpy(new_regd->alpha2, curr_regd->alpha2, sizeof(new_regd->alpha2)); 468 new_regd->dfs_region = curr_regd->dfs_region; 469 new_rule = new_regd->reg_rules; 470 471 for (i = 0, k = 0; i < num_old_regd_rules; i++) { 472 old_rule = default_regd->reg_rules + i; 473 for (j = 0; j < num_curr_regd_rules; j++) { 474 curr_rule = curr_regd->reg_rules + j; 475 476 if (ath11k_reg_can_intersect(old_rule, curr_rule)) 477 ath11k_reg_intersect_rules(old_rule, curr_rule, 478 (new_rule + k++)); 479 } 480 } 481 return new_regd; 482} 483 484static const char * 485ath11k_reg_get_regdom_str(enum nl80211_dfs_regions dfs_region) 486{ 487 switch (dfs_region) { 488 case NL80211_DFS_FCC: 489 return "FCC"; 490 case NL80211_DFS_ETSI: 491 return "ETSI"; 492 case NL80211_DFS_JP: 493 return "JP"; 494 default: 495 return "UNSET"; 496 } 497} 498 499static u16 500ath11k_reg_adjust_bw(u16 start_freq, u16 end_freq, u16 max_bw) 501{ 502 u16 bw; 503 504 if (end_freq <= start_freq) 505 return 0; 506 507 bw = end_freq - start_freq; 508 bw = min_t(u16, bw, max_bw); 509 510 if (bw >= 80 && bw < 160) 511 bw = 80; 512 else if (bw >= 40 && bw < 80) 513 bw = 40; 514 else if (bw >= 20 && bw < 40) 515 bw = 20; 516 else 517 bw = 0; 518 519 return bw; 520} 521 522static void 523ath11k_reg_update_rule(struct ieee80211_reg_rule *reg_rule, u32 start_freq, 524 u32 end_freq, u32 bw, u32 ant_gain, u32 reg_pwr, 525 s8 psd, u32 reg_flags) 526{ 527 reg_rule->freq_range.start_freq_khz = MHZ_TO_KHZ(start_freq); 528 reg_rule->freq_range.end_freq_khz = MHZ_TO_KHZ(end_freq); 529 reg_rule->freq_range.max_bandwidth_khz = MHZ_TO_KHZ(bw); 530 reg_rule->power_rule.max_antenna_gain = DBI_TO_MBI(ant_gain); 531 reg_rule->power_rule.max_eirp = DBM_TO_MBM(reg_pwr); 532 reg_rule->psd = psd; 533 reg_rule->flags = reg_flags; 534} 535 536static void 537ath11k_reg_update_weather_radar_band(struct ath11k_base *ab, 538 struct ieee80211_regdomain *regd, 539 struct cur_reg_rule *reg_rule, 540 u8 *rule_idx, u32 flags, u16 max_bw) 541{ 542 u32 start_freq; 543 u32 end_freq; 544 u16 bw; 545 u8 i; 546 547 i = *rule_idx; 548 549 /* there might be situations when even the input rule must be dropped */ 550 i--; 551 552 /* frequencies below weather radar */ 553 bw = ath11k_reg_adjust_bw(reg_rule->start_freq, 554 ETSI_WEATHER_RADAR_BAND_LOW, max_bw); 555 if (bw > 0) { 556 i++; 557 558 ath11k_reg_update_rule(regd->reg_rules + i, 559 reg_rule->start_freq, 560 ETSI_WEATHER_RADAR_BAND_LOW, bw, 561 reg_rule->ant_gain, reg_rule->reg_power, 562 reg_rule->psd_eirp, flags); 563 564 ath11k_dbg(ab, ATH11K_DBG_REG, 565 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n", 566 i + 1, reg_rule->start_freq, 567 ETSI_WEATHER_RADAR_BAND_LOW, bw, reg_rule->ant_gain, 568 reg_rule->reg_power, regd->reg_rules[i].dfs_cac_ms, 569 flags); 570 } 571 572 /* weather radar frequencies */ 573 start_freq = max_t(u32, reg_rule->start_freq, 574 ETSI_WEATHER_RADAR_BAND_LOW); 575 end_freq = min_t(u32, reg_rule->end_freq, ETSI_WEATHER_RADAR_BAND_HIGH); 576 577 bw = ath11k_reg_adjust_bw(start_freq, end_freq, max_bw); 578 if (bw > 0) { 579 i++; 580 581 ath11k_reg_update_rule(regd->reg_rules + i, start_freq, 582 end_freq, bw, reg_rule->ant_gain, 583 reg_rule->reg_power, reg_rule->psd_eirp, flags); 584 585 regd->reg_rules[i].dfs_cac_ms = ETSI_WEATHER_RADAR_BAND_CAC_TIMEOUT; 586 587 ath11k_dbg(ab, ATH11K_DBG_REG, 588 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n", 589 i + 1, start_freq, end_freq, bw, 590 reg_rule->ant_gain, reg_rule->reg_power, 591 regd->reg_rules[i].dfs_cac_ms, flags); 592 } 593 594 /* frequencies above weather radar */ 595 bw = ath11k_reg_adjust_bw(ETSI_WEATHER_RADAR_BAND_HIGH, 596 reg_rule->end_freq, max_bw); 597 if (bw > 0) { 598 i++; 599 600 ath11k_reg_update_rule(regd->reg_rules + i, 601 ETSI_WEATHER_RADAR_BAND_HIGH, 602 reg_rule->end_freq, bw, 603 reg_rule->ant_gain, reg_rule->reg_power, 604 reg_rule->psd_eirp, flags); 605 606 ath11k_dbg(ab, ATH11K_DBG_REG, 607 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n", 608 i + 1, ETSI_WEATHER_RADAR_BAND_HIGH, 609 reg_rule->end_freq, bw, reg_rule->ant_gain, 610 reg_rule->reg_power, regd->reg_rules[i].dfs_cac_ms, 611 flags); 612 } 613 614 *rule_idx = i; 615} 616 617enum wmi_reg_6ghz_ap_type 618ath11k_reg_ap_pwr_convert(enum ieee80211_ap_reg_power power_type) 619{ 620 switch (power_type) { 621 case IEEE80211_REG_LPI_AP: 622 return WMI_REG_INDOOR_AP; 623 case IEEE80211_REG_SP_AP: 624 return WMI_REG_STANDARD_POWER_AP; 625 case IEEE80211_REG_VLP_AP: 626 return WMI_REG_VERY_LOW_POWER_AP; 627 default: 628 return WMI_REG_MAX_AP_TYPE; 629 } 630} 631 632struct ieee80211_regdomain * 633ath11k_reg_build_regd(struct ath11k_base *ab, 634 struct cur_regulatory_info *reg_info, bool intersect, 635 enum wmi_vdev_type vdev_type, 636 enum ieee80211_ap_reg_power power_type) 637{ 638 struct ieee80211_regdomain *tmp_regd, *default_regd, *new_regd = NULL; 639 struct cur_reg_rule *reg_rule, *reg_rule_6ghz; 640 u8 i = 0, j = 0, k = 0; 641 u8 num_rules; 642 u16 max_bw; 643 u32 flags, reg_6ghz_number, max_bw_6ghz; 644 char alpha2[3]; 645 646 num_rules = reg_info->num_5ghz_reg_rules + reg_info->num_2ghz_reg_rules; 647 648 if (reg_info->is_ext_reg_event) { 649 if (vdev_type == WMI_VDEV_TYPE_STA) { 650 enum wmi_reg_6ghz_ap_type ap_type; 651 652 ap_type = ath11k_reg_ap_pwr_convert(power_type); 653 654 if (ap_type == WMI_REG_MAX_AP_TYPE) 655 ap_type = WMI_REG_INDOOR_AP; 656 657 reg_6ghz_number = reg_info->num_6ghz_rules_client 658 [ap_type][WMI_REG_DEFAULT_CLIENT]; 659 660 if (reg_6ghz_number == 0) { 661 ap_type = WMI_REG_INDOOR_AP; 662 reg_6ghz_number = reg_info->num_6ghz_rules_client 663 [ap_type][WMI_REG_DEFAULT_CLIENT]; 664 } 665 666 reg_rule_6ghz = reg_info->reg_rules_6ghz_client_ptr 667 [ap_type][WMI_REG_DEFAULT_CLIENT]; 668 max_bw_6ghz = reg_info->max_bw_6ghz_client 669 [ap_type][WMI_REG_DEFAULT_CLIENT]; 670 } else { 671 reg_6ghz_number = reg_info->num_6ghz_rules_ap[WMI_REG_INDOOR_AP]; 672 reg_rule_6ghz = 673 reg_info->reg_rules_6ghz_ap_ptr[WMI_REG_INDOOR_AP]; 674 max_bw_6ghz = reg_info->max_bw_6ghz_ap[WMI_REG_INDOOR_AP]; 675 } 676 677 num_rules += reg_6ghz_number; 678 } 679 680 if (!num_rules) 681 goto ret; 682 683 /* Add max additional rules to accommodate weather radar band */ 684 if (reg_info->dfs_region == ATH11K_DFS_REG_ETSI) 685 num_rules += 2; 686 687 tmp_regd = kzalloc(sizeof(*tmp_regd) + 688 (num_rules * sizeof(struct ieee80211_reg_rule)), 689 GFP_ATOMIC); 690 if (!tmp_regd) 691 goto ret; 692 693 memcpy(tmp_regd->alpha2, reg_info->alpha2, REG_ALPHA2_LEN + 1); 694 memcpy(alpha2, reg_info->alpha2, REG_ALPHA2_LEN + 1); 695 alpha2[2] = '\0'; 696 tmp_regd->dfs_region = ath11k_map_fw_dfs_region(reg_info->dfs_region); 697 698 ath11k_dbg(ab, ATH11K_DBG_REG, 699 "Country %s, CFG Regdomain %s FW Regdomain %d, num_reg_rules %d\n", 700 alpha2, ath11k_reg_get_regdom_str(tmp_regd->dfs_region), 701 reg_info->dfs_region, num_rules); 702 /* Update reg_rules[] below. Firmware is expected to 703 * send these rules in order(2 GHz rules first and then 5 GHz) 704 */ 705 for (; i < num_rules; i++) { 706 if (reg_info->num_2ghz_reg_rules && 707 (i < reg_info->num_2ghz_reg_rules)) { 708 reg_rule = reg_info->reg_rules_2ghz_ptr + i; 709 max_bw = min_t(u16, reg_rule->max_bw, 710 reg_info->max_bw_2ghz); 711 flags = 0; 712 } else if (reg_info->num_5ghz_reg_rules && 713 (j < reg_info->num_5ghz_reg_rules)) { 714 reg_rule = reg_info->reg_rules_5ghz_ptr + j++; 715 max_bw = min_t(u16, reg_rule->max_bw, 716 reg_info->max_bw_5ghz); 717 718 /* FW doesn't pass NL80211_RRF_AUTO_BW flag for 719 * BW Auto correction, we can enable this by default 720 * for all 5G rules here. The regulatory core performs 721 * BW correction if required and applies flags as 722 * per other BW rule flags we pass from here 723 */ 724 flags = NL80211_RRF_AUTO_BW; 725 } else if (reg_info->is_ext_reg_event && reg_6ghz_number && 726 k < reg_6ghz_number) { 727 reg_rule = reg_rule_6ghz + k++; 728 max_bw = min_t(u16, reg_rule->max_bw, max_bw_6ghz); 729 flags = NL80211_RRF_AUTO_BW; 730 if (reg_rule->psd_flag) 731 flags |= NL80211_RRF_PSD; 732 } else { 733 break; 734 } 735 736 flags |= ath11k_map_fw_reg_flags(reg_rule->flags); 737 flags |= ath11k_map_fw_phy_flags(reg_info->phybitmap); 738 739 ath11k_reg_update_rule(tmp_regd->reg_rules + i, 740 reg_rule->start_freq, 741 reg_rule->end_freq, max_bw, 742 reg_rule->ant_gain, reg_rule->reg_power, 743 reg_rule->psd_eirp, flags); 744 745 /* Update dfs cac timeout if the dfs domain is ETSI and the 746 * new rule covers weather radar band. 747 * Default value of '0' corresponds to 60s timeout, so no 748 * need to update that for other rules. 749 */ 750 if (flags & NL80211_RRF_DFS && 751 reg_info->dfs_region == ATH11K_DFS_REG_ETSI && 752 (reg_rule->end_freq > ETSI_WEATHER_RADAR_BAND_LOW && 753 reg_rule->start_freq < ETSI_WEATHER_RADAR_BAND_HIGH)){ 754 ath11k_reg_update_weather_radar_band(ab, tmp_regd, 755 reg_rule, &i, 756 flags, max_bw); 757 continue; 758 } 759 760 if (reg_info->is_ext_reg_event) { 761 ath11k_dbg(ab, ATH11K_DBG_REG, 762 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d) (%d, %d)\n", 763 i + 1, reg_rule->start_freq, reg_rule->end_freq, 764 max_bw, reg_rule->ant_gain, reg_rule->reg_power, 765 tmp_regd->reg_rules[i].dfs_cac_ms, flags, 766 reg_rule->psd_flag, reg_rule->psd_eirp); 767 } else { 768 ath11k_dbg(ab, ATH11K_DBG_REG, 769 "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n", 770 i + 1, reg_rule->start_freq, reg_rule->end_freq, 771 max_bw, reg_rule->ant_gain, reg_rule->reg_power, 772 tmp_regd->reg_rules[i].dfs_cac_ms, 773 flags); 774 } 775 } 776 777 tmp_regd->n_reg_rules = i; 778 779 if (intersect) { 780 default_regd = ab->default_regd[reg_info->phy_id]; 781 782 /* Get a new regd by intersecting the received regd with 783 * our default regd. 784 */ 785 new_regd = ath11k_regd_intersect(default_regd, tmp_regd); 786 kfree(tmp_regd); 787 if (!new_regd) { 788 ath11k_warn(ab, "Unable to create intersected regdomain\n"); 789 goto ret; 790 } 791 } else { 792 new_regd = tmp_regd; 793 } 794 795ret: 796 return new_regd; 797} 798 799void ath11k_regd_update_chan_list_work(struct work_struct *work) 800{ 801 struct ath11k *ar = container_of(work, struct ath11k, 802 channel_update_work); 803 struct scan_chan_list_params *params; 804 struct list_head local_update_list; 805 int left; 806 807 INIT_LIST_HEAD(&local_update_list); 808 809 spin_lock_bh(&ar->data_lock); 810 list_splice_tail_init(&ar->channel_update_queue, &local_update_list); 811 spin_unlock_bh(&ar->data_lock); 812 813 while ((params = list_first_entry_or_null(&local_update_list, 814 struct scan_chan_list_params, 815 list))) { 816 if (ar->state_11d != ATH11K_11D_IDLE) { 817 left = wait_for_completion_timeout(&ar->completed_11d_scan, 818 ATH11K_SCAN_TIMEOUT_HZ); 819 if (!left) { 820 ath11k_dbg(ar->ab, ATH11K_DBG_REG, 821 "failed to receive 11d scan complete: timed out\n"); 822 ar->state_11d = ATH11K_11D_IDLE; 823 } 824 825 ath11k_dbg(ar->ab, ATH11K_DBG_REG, 826 "reg 11d scan wait left time %d\n", left); 827 } 828 829 if ((ar->scan.state == ATH11K_SCAN_STARTING || 830 ar->scan.state == ATH11K_SCAN_RUNNING)) { 831 left = wait_for_completion_timeout(&ar->scan.completed, 832 ATH11K_SCAN_TIMEOUT_HZ); 833 if (!left) 834 ath11k_dbg(ar->ab, ATH11K_DBG_REG, 835 "failed to receive hw scan complete: timed out\n"); 836 837 ath11k_dbg(ar->ab, ATH11K_DBG_REG, 838 "reg hw scan wait left time %d\n", left); 839 } 840 841 ath11k_wmi_send_scan_chan_list_cmd(ar, params); 842 list_del(¶ms->list); 843 kfree(params); 844 } 845} 846 847static bool ath11k_reg_is_world_alpha(char *alpha) 848{ 849 if (alpha[0] == '0' && alpha[1] == '0') 850 return true; 851 852 if (alpha[0] == 'n' && alpha[1] == 'a') 853 return true; 854 855 return false; 856} 857 858static enum wmi_vdev_type ath11k_reg_get_ar_vdev_type(struct ath11k *ar) 859{ 860 struct ath11k_vif *arvif; 861 862 /* Currently each struct ath11k maps to one struct ieee80211_hw/wiphy 863 * and one struct ieee80211_regdomain, so it could only store one group 864 * reg rules. It means multi-interface concurrency in the same ath11k is 865 * not support for the regdomain. So get the vdev type of the first entry 866 * now. After concurrency support for the regdomain, this should change. 867 */ 868 arvif = list_first_entry_or_null(&ar->arvifs, struct ath11k_vif, list); 869 if (arvif) 870 return arvif->vdev_type; 871 872 return WMI_VDEV_TYPE_UNSPEC; 873} 874 875int ath11k_reg_handle_chan_list(struct ath11k_base *ab, 876 struct cur_regulatory_info *reg_info, 877 enum ieee80211_ap_reg_power power_type) 878{ 879 struct ieee80211_regdomain *regd; 880 bool intersect = false; 881 int pdev_idx; 882 struct ath11k *ar; 883 enum wmi_vdev_type vdev_type; 884 885 ath11k_dbg(ab, ATH11K_DBG_WMI, "event reg handle chan list"); 886 887 if (reg_info->status_code != REG_SET_CC_STATUS_PASS) { 888 /* In case of failure to set the requested ctry, 889 * fw retains the current regd. We print a failure info 890 * and return from here. 891 */ 892 ath11k_warn(ab, "Failed to set the requested Country regulatory setting\n"); 893 return -EINVAL; 894 } 895 896 pdev_idx = reg_info->phy_id; 897 898 /* Avoid default reg rule updates sent during FW recovery if 899 * it is already available 900 */ 901 spin_lock_bh(&ab->base_lock); 902 if (test_bit(ATH11K_FLAG_RECOVERY, &ab->dev_flags) && 903 ab->default_regd[pdev_idx]) { 904 spin_unlock_bh(&ab->base_lock); 905 goto retfail; 906 } 907 spin_unlock_bh(&ab->base_lock); 908 909 if (pdev_idx >= ab->num_radios) { 910 /* Process the event for phy0 only if single_pdev_only 911 * is true. If pdev_idx is valid but not 0, discard the 912 * event. Otherwise, it goes to fallback. In either case 913 * ath11k_reg_reset_info() needs to be called to avoid 914 * memory leak issue. 915 */ 916 ath11k_reg_reset_info(reg_info); 917 918 if (ab->hw_params.single_pdev_only && 919 pdev_idx < ab->hw_params.num_rxdma_per_pdev) 920 return 0; 921 goto fallback; 922 } 923 924 /* Avoid multiple overwrites to default regd, during core 925 * stop-start after mac registration. 926 */ 927 if (ab->default_regd[pdev_idx] && !ab->new_regd[pdev_idx] && 928 !memcmp((char *)ab->default_regd[pdev_idx]->alpha2, 929 (char *)reg_info->alpha2, 2) && 930 power_type == IEEE80211_REG_UNSET_AP) { 931 ath11k_reg_reset_info(reg_info); 932 return 0; 933 } 934 935 /* Intersect new rules with default regd if a new country setting was 936 * requested, i.e a default regd was already set during initialization 937 * and the regd coming from this event has a valid country info. 938 */ 939 if (ab->default_regd[pdev_idx] && 940 !ath11k_reg_is_world_alpha((char *) 941 ab->default_regd[pdev_idx]->alpha2) && 942 !ath11k_reg_is_world_alpha((char *)reg_info->alpha2)) 943 intersect = true; 944 945 ar = ab->pdevs[pdev_idx].ar; 946 vdev_type = ath11k_reg_get_ar_vdev_type(ar); 947 948 ath11k_dbg(ab, ATH11K_DBG_WMI, 949 "wmi handle chan list power type %d vdev type %d intersect %d\n", 950 power_type, vdev_type, intersect); 951 952 regd = ath11k_reg_build_regd(ab, reg_info, intersect, vdev_type, power_type); 953 if (!regd) { 954 ath11k_warn(ab, "failed to build regd from reg_info\n"); 955 goto fallback; 956 } 957 958 if (power_type == IEEE80211_REG_UNSET_AP) { 959 ath11k_reg_reset_info(&ab->reg_info_store[pdev_idx]); 960 ab->reg_info_store[pdev_idx] = *reg_info; 961 } 962 963 spin_lock_bh(&ab->base_lock); 964 if (ab->default_regd[pdev_idx]) { 965 /* The initial rules from FW after WMI Init is to build 966 * the default regd. From then on, any rules updated for 967 * the pdev could be due to user reg changes. 968 * Free previously built regd before assigning the newly 969 * generated regd to ar. NULL pointer handling will be 970 * taken care by kfree itself. 971 */ 972 ar = ab->pdevs[pdev_idx].ar; 973 kfree(ab->new_regd[pdev_idx]); 974 ab->new_regd[pdev_idx] = regd; 975 queue_work(ab->workqueue, &ar->regd_update_work); 976 } else { 977 /* This regd would be applied during mac registration and is 978 * held constant throughout for regd intersection purpose 979 */ 980 ab->default_regd[pdev_idx] = regd; 981 } 982 ab->dfs_region = reg_info->dfs_region; 983 spin_unlock_bh(&ab->base_lock); 984 985 return 0; 986 987fallback: 988 /* Fallback to older reg (by sending previous country setting 989 * again if fw has succeeded and we failed to process here. 990 * The Regdomain should be uniform across driver and fw. Since the 991 * FW has processed the command and sent a success status, we expect 992 * this function to succeed as well. If it doesn't, CTRY needs to be 993 * reverted at the fw and the old SCAN_CHAN_LIST cmd needs to be sent. 994 */ 995 /* TODO: This is rare, but still should also be handled */ 996 WARN_ON(1); 997 998retfail: 999 1000 return -EINVAL; 1001} 1002 1003void ath11k_regd_update_work(struct work_struct *work) 1004{ 1005 struct ath11k *ar = container_of(work, struct ath11k, 1006 regd_update_work); 1007 int ret; 1008 1009 ret = ath11k_regd_update(ar); 1010 if (ret) { 1011 /* Firmware has already moved to the new regd. We need 1012 * to maintain channel consistency across FW, Host driver 1013 * and userspace. Hence as a fallback mechanism we can set 1014 * the prev or default country code to the firmware. 1015 */ 1016 /* TODO: Implement Fallback Mechanism */ 1017 } 1018} 1019 1020void ath11k_reg_init(struct ath11k *ar) 1021{ 1022 ar->hw->wiphy->regulatory_flags = REGULATORY_WIPHY_SELF_MANAGED; 1023 ar->hw->wiphy->flags |= WIPHY_FLAG_NOTIFY_REGDOM_BY_DRIVER; 1024 ar->hw->wiphy->reg_notifier = ath11k_reg_notifier; 1025} 1026 1027void ath11k_reg_reset_info(struct cur_regulatory_info *reg_info) 1028{ 1029 int i, j; 1030 1031 if (!reg_info) 1032 return; 1033 1034 kfree(reg_info->reg_rules_2ghz_ptr); 1035 kfree(reg_info->reg_rules_5ghz_ptr); 1036 1037 for (i = 0; i < WMI_REG_CURRENT_MAX_AP_TYPE; i++) { 1038 kfree(reg_info->reg_rules_6ghz_ap_ptr[i]); 1039 1040 for (j = 0; j < WMI_REG_MAX_CLIENT_TYPE; j++) 1041 kfree(reg_info->reg_rules_6ghz_client_ptr[i][j]); 1042 } 1043 1044 memset(reg_info, 0, sizeof(*reg_info)); 1045} 1046 1047void ath11k_reg_free(struct ath11k_base *ab) 1048{ 1049 int i; 1050 1051 for (i = 0; i < ab->num_radios; i++) 1052 ath11k_reg_reset_info(&ab->reg_info_store[i]); 1053 1054 kfree(ab->reg_info_store); 1055 ab->reg_info_store = NULL; 1056 1057 for (i = 0; i < ab->hw_params.max_radios; i++) { 1058 kfree(ab->default_regd[i]); 1059 kfree(ab->new_regd[i]); 1060 } 1061} 1062 1063int ath11k_reg_set_cc(struct ath11k *ar) 1064{ 1065 struct wmi_set_current_country_params set_current_param = {}; 1066 1067 memcpy(&set_current_param.alpha2, ar->alpha2, 2); 1068 return ath11k_wmi_send_set_current_country_cmd(ar, &set_current_param); 1069}
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