1 /* 2 * Copyright (c) 2020-2021, The Linux Foundation. All rights reserved. 3 * Copyright (c) 2022-2023 Qualcomm Innovation Center, Inc. All rights reserved. 4 * 5 * Permission to use, copy, modify, and/or distribute this software for any 6 * purpose with or without fee is hereby granted, provided that the above 7 * copyright notice and this permission notice appear in all copies. 8 * 9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 16 */ 17 18 /** 19 * DOC: wlan_dcs.c 20 * 21 * This file provide definitions for following: 22 * - (de)register to WMI events for psoc enable 23 * - send dcs wmi command 24 * - dcs algorithm handling 25 */ 26 27 #include <target_if_dcs.h> 28 #include "wlan_dcs.h" 29 #include <wlan_objmgr_psoc_obj_i.h> 30 #include "wlan_utility.h" 31 #ifdef WLAN_POLICY_MGR_ENABLE 32 #include "wlan_policy_mgr_api.h" 33 #endif 34 #include <wlan_reg_services_api.h> 35 36 struct dcs_pdev_priv_obj * 37 wlan_dcs_get_pdev_private_obj(struct wlan_objmgr_psoc *psoc, uint32_t pdev_id) 38 { 39 struct dcs_psoc_priv_obj *dcs_psoc_obj; 40 struct dcs_pdev_priv_obj *dcs_pdev_priv = NULL; 41 42 if (!psoc) { 43 dcs_err("psoc is null"); 44 goto end; 45 } 46 47 dcs_psoc_obj = wlan_objmgr_psoc_get_comp_private_obj( 48 psoc, 49 WLAN_UMAC_COMP_DCS); 50 if (!dcs_psoc_obj) { 51 dcs_err("dcs psoc object is null"); 52 goto end; 53 } 54 55 if (pdev_id >= WLAN_DCS_MAX_PDEVS) { 56 dcs_err("invalid pdev_id: %u", pdev_id); 57 goto end; 58 } 59 60 dcs_pdev_priv = &dcs_psoc_obj->dcs_pdev_priv[pdev_id]; 61 end: 62 63 return dcs_pdev_priv; 64 } 65 66 QDF_STATUS wlan_dcs_attach(struct wlan_objmgr_psoc *psoc) 67 { 68 struct wlan_target_if_dcs_tx_ops *dcs_tx_ops; 69 70 if (!psoc) { 71 dcs_err("psoc is null"); 72 return QDF_STATUS_E_NULL_VALUE; 73 } 74 75 dcs_tx_ops = target_if_dcs_get_tx_ops(psoc); 76 if (!dcs_tx_ops) { 77 dcs_err("tx_ops is null!"); 78 return QDF_STATUS_E_NULL_VALUE; 79 } 80 81 if (!dcs_tx_ops->dcs_attach) { 82 dcs_err("dcs_attach function is null!"); 83 return QDF_STATUS_E_NULL_VALUE; 84 } 85 86 return dcs_tx_ops->dcs_attach(psoc); 87 } 88 89 QDF_STATUS wlan_dcs_detach(struct wlan_objmgr_psoc *psoc) 90 { 91 struct wlan_target_if_dcs_tx_ops *dcs_tx_ops; 92 93 if (!psoc) { 94 dcs_err("psoc is null"); 95 return QDF_STATUS_E_NULL_VALUE; 96 } 97 98 dcs_tx_ops = target_if_dcs_get_tx_ops(psoc); 99 if (!dcs_tx_ops) { 100 dcs_err("tx_ops is null!"); 101 return QDF_STATUS_E_NULL_VALUE; 102 } 103 104 if (!dcs_tx_ops->dcs_detach) { 105 dcs_err("dcs_detach function is null!"); 106 return QDF_STATUS_E_NULL_VALUE; 107 } 108 109 return dcs_tx_ops->dcs_detach(psoc); 110 } 111 112 QDF_STATUS wlan_dcs_cmd_send(struct wlan_objmgr_psoc *psoc, 113 uint32_t pdev_id, 114 bool is_host_pdev_id) 115 { 116 struct wlan_target_if_dcs_tx_ops *dcs_tx_ops; 117 struct dcs_pdev_priv_obj *dcs_pdev_priv; 118 uint32_t dcs_enable; 119 120 if (!psoc) { 121 dcs_err("psoc is null"); 122 return QDF_STATUS_E_NULL_VALUE; 123 } 124 125 dcs_pdev_priv = wlan_dcs_get_pdev_private_obj(psoc, pdev_id); 126 if (!dcs_pdev_priv) { 127 dcs_err("dcs pdev private object is null"); 128 return QDF_STATUS_E_NULL_VALUE; 129 } 130 131 dcs_enable = dcs_pdev_priv->dcs_host_params.dcs_enable & 132 dcs_pdev_priv->dcs_host_params.dcs_enable_cfg; 133 dcs_tx_ops = target_if_dcs_get_tx_ops(psoc); 134 135 if (dcs_tx_ops && dcs_tx_ops->dcs_cmd_send) { 136 dcs_debug("dcs_enable: %u, pdev_id: %u", dcs_enable, pdev_id); 137 return dcs_tx_ops->dcs_cmd_send(psoc, 138 pdev_id, 139 is_host_pdev_id, 140 dcs_enable); 141 } 142 143 return QDF_STATUS_SUCCESS; 144 } 145 146 /** 147 * wlan_dcs_im_copy_stats() - dcs target interference mitigation statistics copy 148 * @prev_stats: previous statistics pointer 149 * @curr_stats: current statistics pointer 150 * 151 * Return: None 152 */ 153 static inline void 154 wlan_dcs_im_copy_stats(struct wlan_host_dcs_im_tgt_stats *prev_stats, 155 struct wlan_host_dcs_im_tgt_stats *curr_stats) 156 { 157 if (!prev_stats || !curr_stats) { 158 dcs_err("previous or current stats is null"); 159 return; 160 } 161 162 /* 163 * Right now no other actions are required beyond memcopy, 164 * if required the rest of the code would follow. 165 */ 166 qdf_mem_copy(prev_stats, curr_stats, 167 sizeof(struct wlan_host_dcs_im_tgt_stats)); 168 } 169 170 /** 171 * wlan_dcs_im_print_stats() - print current/previous dcs target im statistics 172 * @prev_stats: previous statistics pointer 173 * @curr_stats: current statistics pointer 174 * 175 * Return: None 176 */ 177 static void 178 wlan_dcs_im_print_stats(struct wlan_host_dcs_im_tgt_stats *prev_stats, 179 struct wlan_host_dcs_im_tgt_stats *curr_stats) 180 { 181 if (!prev_stats || !curr_stats) { 182 dcs_err("previous or current stats is null"); 183 return; 184 } 185 186 /* Debug, dump all received stats first */ 187 dcs_debug("tgt_curr/tsf: %u", curr_stats->reg_tsf32); 188 dcs_debug("tgt_curr/last_ack_rssi: %u", curr_stats->last_ack_rssi); 189 dcs_debug("tgt_curr/tx_waste_time: %u", curr_stats->tx_waste_time); 190 dcs_debug("tgt_curr/dcs_rx_time: %u", curr_stats->rx_time); 191 dcs_debug("tgt_curr/listen_time: %u", 192 curr_stats->mib_stats.listen_time); 193 dcs_debug("tgt_curr/tx_frame_cnt: %u", 194 curr_stats->mib_stats.reg_tx_frame_cnt); 195 dcs_debug("tgt_curr/rx_frame_cnt: %u", 196 curr_stats->mib_stats.reg_rx_frame_cnt); 197 dcs_debug("tgt_curr/rxclr_cnt: %u", 198 curr_stats->mib_stats.reg_rxclr_cnt); 199 dcs_debug("tgt_curr/reg_cycle_cnt: %u", 200 curr_stats->mib_stats.reg_cycle_cnt); 201 dcs_debug("tgt_curr/rxclr_ext_cnt: %u", 202 curr_stats->mib_stats.reg_rxclr_ext_cnt); 203 dcs_debug("tgt_curr/ofdm_phyerr_cnt: %u", 204 curr_stats->mib_stats.reg_ofdm_phyerr_cnt); 205 dcs_debug("tgt_curr/cck_phyerr_cnt: %u", 206 curr_stats->mib_stats.reg_cck_phyerr_cnt); 207 208 dcs_debug("tgt_prev/tsf: %u", prev_stats->reg_tsf32); 209 dcs_debug("tgt_prev/last_ack_rssi: %u", prev_stats->last_ack_rssi); 210 dcs_debug("tgt_prev/tx_waste_time: %u", prev_stats->tx_waste_time); 211 dcs_debug("tgt_prev/rx_time: %u", prev_stats->rx_time); 212 dcs_debug("tgt_prev/listen_time: %u", 213 prev_stats->mib_stats.listen_time); 214 dcs_debug("tgt_prev/tx_frame_cnt: %u", 215 prev_stats->mib_stats.reg_tx_frame_cnt); 216 dcs_debug("tgt_prev/rx_frame_cnt: %u", 217 prev_stats->mib_stats.reg_rx_frame_cnt); 218 dcs_debug("tgt_prev/rxclr_cnt: %u", 219 prev_stats->mib_stats.reg_rxclr_cnt); 220 dcs_debug("tgt_prev/reg_cycle_cnt: %u", 221 prev_stats->mib_stats.reg_cycle_cnt); 222 dcs_debug("tgt_prev/rxclr_ext_cnt: %u", 223 prev_stats->mib_stats.reg_rxclr_ext_cnt); 224 dcs_debug("tgt_prev/ofdm_phyerr_cnt: %u", 225 prev_stats->mib_stats.reg_ofdm_phyerr_cnt); 226 dcs_debug("tgt_prev/cck_phyerr_cnt: %u", 227 prev_stats->mib_stats.reg_cck_phyerr_cnt); 228 } 229 230 /** 231 * wlan_dcs_update_chan_util() - update chan utilization of dcs stats 232 * @p_dcs_im_stats: pointer to pdev_dcs_im_stats 233 * @rx_cu: rx channel utilization 234 * @tx_cu: tx channel utilization 235 * @obss_rx_cu: obss rx channel utilization 236 * @total_cu: total channel utilization 237 * @chan_nf: Channel noise floor (units are in dBm) 238 * 239 * Return: Void 240 */ 241 static void wlan_dcs_update_chan_util(struct pdev_dcs_im_stats *p_dcs_im_stats, 242 uint32_t rx_cu, uint32_t tx_cu, 243 uint32_t obss_rx_cu, 244 uint32_t total_cu, uint32_t chan_nf) 245 { 246 if (p_dcs_im_stats) { 247 p_dcs_im_stats->dcs_ch_util_im_stats.rx_cu = rx_cu; 248 p_dcs_im_stats->dcs_ch_util_im_stats.tx_cu = tx_cu; 249 p_dcs_im_stats->dcs_ch_util_im_stats.obss_rx_cu = obss_rx_cu; 250 p_dcs_im_stats->dcs_ch_util_im_stats.total_cu = total_cu; 251 p_dcs_im_stats->dcs_ch_util_im_stats.chan_nf = chan_nf; 252 } 253 } 254 255 /** 256 * wlan_dcs_wlan_interference_process() - dcs detection algorithm handling 257 * @curr_stats: current target im stats pointer 258 * @dcs_pdev_priv: dcs pdev priv pointer 259 * 260 * Return: true or false means start dcs callback handler or not 261 */ 262 static bool 263 wlan_dcs_wlan_interference_process( 264 struct wlan_host_dcs_im_tgt_stats *curr_stats, 265 struct dcs_pdev_priv_obj *dcs_pdev_priv) 266 { 267 struct wlan_host_dcs_im_tgt_stats *prev_stats; 268 struct pdev_dcs_params dcs_host_params; 269 struct pdev_dcs_im_stats *p_dcs_im_stats; 270 bool start_dcs_cbk_handler = false; 271 272 uint32_t reg_tsf_delta = 0; 273 uint32_t scaled_reg_tsf_delta; 274 uint32_t rxclr_delta = 0; 275 uint32_t rxclr_ext_delta = 0; 276 uint32_t cycle_count_delta = 0; 277 uint32_t scaled_cycle_count_delta; 278 uint32_t tx_frame_delta = 0; 279 uint32_t rx_frame_delta = 0; 280 uint32_t my_bss_rx_delta = 0; 281 uint32_t reg_total_cu = 0; 282 uint32_t reg_tx_cu = 0; 283 uint32_t reg_rx_cu = 0; 284 uint32_t obss_rx_cu = 0; 285 uint32_t reg_unused_cu = 0; 286 uint32_t rx_time_cu = 0; 287 uint32_t reg_ofdm_phyerr_delta = 0; 288 uint32_t reg_cck_phyerr_delta = 0; 289 uint32_t reg_ofdm_phyerr_cu = 0; 290 uint32_t ofdm_phy_err_rate = 0; 291 uint32_t cck_phy_err_rate = 0; 292 uint32_t max_phy_err_rate = 0; 293 uint32_t max_phy_err_count = 0; 294 uint32_t total_wasted_cu = 0; 295 uint32_t wasted_tx_cu = 0; 296 uint32_t tx_err = 0; 297 uint32_t too_many_phy_errors = 0; 298 299 if (!curr_stats) { 300 dcs_err("curr_stats is NULL"); 301 goto end; 302 } 303 304 if (!dcs_pdev_priv) { 305 dcs_err("dcs pdev private object is NULL"); 306 goto end; 307 } 308 309 dcs_host_params = dcs_pdev_priv->dcs_host_params; 310 p_dcs_im_stats = &dcs_pdev_priv->dcs_im_stats; 311 prev_stats = &dcs_pdev_priv->dcs_im_stats.prev_dcs_im_stats; 312 313 if (unlikely(dcs_host_params.dcs_debug >= DCS_DEBUG_VERBOSE)) 314 wlan_dcs_im_print_stats(prev_stats, curr_stats); 315 316 /* 317 * Counters would have wrapped. Ideally we should be able to figure this 318 * out, but we never know how many times counters wrapped, just ignore. 319 */ 320 if ((curr_stats->mib_stats.listen_time <= 0) || 321 (curr_stats->reg_tsf32 <= prev_stats->reg_tsf32)) { 322 if (unlikely(dcs_host_params.dcs_debug >= DCS_DEBUG_VERBOSE)) 323 dcs_debug("ignoring due to negative TSF value"); 324 goto copy_stats; 325 } 326 327 reg_tsf_delta = curr_stats->reg_tsf32 - prev_stats->reg_tsf32; 328 329 /* 330 * Do nothing if current stats are not seeming good, probably 331 * a reset happened on chip, force cleared 332 */ 333 if (prev_stats->mib_stats.reg_rxclr_cnt > 334 curr_stats->mib_stats.reg_rxclr_cnt) { 335 if (unlikely(dcs_host_params.dcs_debug >= DCS_DEBUG_VERBOSE)) 336 dcs_debug("ignoring due to negative rxclr count"); 337 goto copy_stats; 338 } 339 340 rxclr_delta = curr_stats->mib_stats.reg_rxclr_cnt - 341 prev_stats->mib_stats.reg_rxclr_cnt; 342 rxclr_ext_delta = curr_stats->mib_stats.reg_rxclr_ext_cnt - 343 prev_stats->mib_stats.reg_rxclr_ext_cnt; 344 tx_frame_delta = curr_stats->mib_stats.reg_tx_frame_cnt - 345 prev_stats->mib_stats.reg_tx_frame_cnt; 346 347 rx_frame_delta = curr_stats->mib_stats.reg_rx_frame_cnt - 348 prev_stats->mib_stats.reg_rx_frame_cnt; 349 350 cycle_count_delta = curr_stats->mib_stats.reg_cycle_cnt - 351 prev_stats->mib_stats.reg_cycle_cnt; 352 353 my_bss_rx_delta = curr_stats->my_bss_rx_cycle_count - 354 prev_stats->my_bss_rx_cycle_count; 355 356 if (unlikely(dcs_host_params.dcs_debug >= DCS_DEBUG_VERBOSE)) 357 dcs_debug("rxclr_delta: %u, rxclr_ext_delta: %u, tx_frame_delta: %u, rx_frame_delta: %u, cycle_count_delta: %u, my_bss_rx_delta: %u", 358 rxclr_delta, rxclr_ext_delta, tx_frame_delta, 359 rx_frame_delta, cycle_count_delta, my_bss_rx_delta); 360 361 /* Update user stats */ 362 wlan_dcs_pdev_obj_lock(dcs_pdev_priv); 363 if (dcs_pdev_priv->dcs_host_params.user_request_count) { 364 struct wlan_host_dcs_im_user_stats *p_user_stats = 365 &p_dcs_im_stats->user_dcs_im_stats; 366 367 p_user_stats->cycle_count += cycle_count_delta; 368 p_user_stats->rxclr_count += rxclr_delta; 369 p_user_stats->rx_frame_count += rx_frame_delta; 370 p_user_stats->my_bss_rx_cycle_count += my_bss_rx_delta; 371 if (0 == p_user_stats->max_rssi && 372 0 == p_user_stats->min_rssi) { 373 p_user_stats->max_rssi = curr_stats->last_ack_rssi; 374 p_user_stats->min_rssi = curr_stats->last_ack_rssi; 375 } else { 376 if (curr_stats->last_ack_rssi > p_user_stats->max_rssi) 377 p_user_stats->max_rssi = 378 curr_stats->last_ack_rssi; 379 if (curr_stats->last_ack_rssi < p_user_stats->min_rssi) 380 p_user_stats->min_rssi = 381 curr_stats->last_ack_rssi; 382 } 383 dcs_pdev_priv->dcs_host_params.user_request_count--; 384 if (0 == dcs_pdev_priv->dcs_host_params.user_request_count) 385 dcs_pdev_priv->dcs_host_params.notify_user = 1; 386 } 387 wlan_dcs_pdev_obj_unlock(dcs_pdev_priv); 388 389 /* 390 * Total channel utiliztaion is the amount of time RXCLR is 391 * counted. RXCLR is counted, when 'RX is NOT clear', please 392 * refer to mac documentation. It means either TX or RX is ON 393 * 394 * Why shift by 8 ? after multiplication it could overflow. At one 395 * second rate, normally neither cycle_count_delta nor the tsf_delta 396 * would be zero after shift by 8 bits. In corner case, host resets 397 * dcs stats, and at the same time tsf counters is wrapped. 398 * Then all the variable in prev_stats are 0, and the variable in 399 * curr_stats may be a small value, so add check for cycle_count_delta 400 * and the tsf_delta after shift by 8 bits. 401 */ 402 scaled_cycle_count_delta = cycle_count_delta >> 8; 403 scaled_reg_tsf_delta = reg_tsf_delta >> 8; 404 if (!scaled_cycle_count_delta || !scaled_reg_tsf_delta) { 405 if (unlikely(dcs_host_params.dcs_debug >= DCS_DEBUG_VERBOSE)) 406 dcs_debug("cycle count or TSF NULL --Investigate--"); 407 goto copy_stats; 408 } 409 reg_total_cu = ((rxclr_delta >> 8) * 100) / scaled_cycle_count_delta; 410 reg_tx_cu = ((tx_frame_delta >> 8) * 100) / scaled_cycle_count_delta; 411 reg_rx_cu = ((rx_frame_delta >> 8) * 100) / scaled_cycle_count_delta; 412 rx_time_cu = ((curr_stats->rx_time >> 8) * 100) / scaled_reg_tsf_delta; 413 obss_rx_cu = (((rx_frame_delta - my_bss_rx_delta) >> 8) * 100) / 414 scaled_cycle_count_delta; 415 wlan_dcs_update_chan_util(p_dcs_im_stats, reg_rx_cu, reg_tx_cu, 416 obss_rx_cu, reg_total_cu, 417 curr_stats->chan_nf); 418 419 /* 420 * Amount of the time AP received cannot go higher than the receive 421 * cycle count delta. If at all it is, there should have been a 422 * computation error, ceil it to receive_cycle_count_diff 423 */ 424 if (rx_time_cu > reg_rx_cu) 425 rx_time_cu = reg_rx_cu; 426 427 if (unlikely(dcs_host_params.dcs_debug >= DCS_DEBUG_VERBOSE)) 428 dcs_debug("reg_total_cu: %u, reg_tx_cu: %u, reg_rx_cu: %u, rx_time_cu: %u, obss_rx_cu: %u dcs_algorithm: %d", 429 reg_total_cu, reg_tx_cu, reg_rx_cu, 430 rx_time_cu, obss_rx_cu, 431 dcs_host_params.dcs_algorithm_process); 432 433 /* 434 * For below scenario, will ignore dcs event data and won't do 435 * interference detection algorithm calculation: 436 * 1: Current SAP channel isn't on 5G band 437 * 2: In the process of ACS 438 * 3: In the process of dcs disabling dcs_restart_delay time duration 439 */ 440 if (!dcs_host_params.dcs_algorithm_process) 441 goto copy_stats; 442 443 /* 444 * Unusable channel utilization is amount of time that we 445 * spent in backoff or waiting for other transmit/receive to 446 * complete. If there is interference it is more likely that 447 * we overshoot the limit. In case of multiple stations, we 448 * still see increased channel utilization. This assumption may 449 * not be true for the VOW scenario where either multicast or 450 * unicast-UDP is used ( mixed traffic would still cause high 451 * channel utilization). 452 */ 453 wasted_tx_cu = ((curr_stats->tx_waste_time >> 8) * 100) / 454 scaled_reg_tsf_delta; 455 456 /* 457 * Transmit channel utilization cannot go higher than the amount of time 458 * wasted, if so cap the wastage to transmit channel utillzation. This 459 * could happen to compution error. 460 */ 461 if (reg_tx_cu < wasted_tx_cu) 462 wasted_tx_cu = reg_tx_cu; 463 464 tx_err = (reg_tx_cu && wasted_tx_cu) ? 465 (wasted_tx_cu * 100) / reg_tx_cu : 0; 466 467 /* 468 * The below actually gives amount of time we are not using, or the 469 * interferer is active. 470 * rx_time_cu is what computed receive time *NOT* rx_cycle_count 471 * rx_cycle_count is our receive+interferer's transmit 472 * un-used is really total_cycle_counts - 473 * (our_rx_time(rx_time_cu) + our_receive_time) 474 */ 475 reg_unused_cu = (reg_total_cu >= (reg_tx_cu + rx_time_cu)) ? 476 (reg_total_cu - (reg_tx_cu + rx_time_cu)) : 0; 477 478 /* If any retransmissions are there, count them as wastage */ 479 total_wasted_cu = reg_unused_cu + wasted_tx_cu; 480 481 /* Check ofdm and cck errors */ 482 if (unlikely(curr_stats->mib_stats.reg_ofdm_phyerr_cnt < 483 prev_stats->mib_stats.reg_ofdm_phyerr_cnt)) 484 reg_ofdm_phyerr_delta = 485 curr_stats->mib_stats.reg_ofdm_phyerr_cnt; 486 else 487 reg_ofdm_phyerr_delta = 488 curr_stats->mib_stats.reg_ofdm_phyerr_cnt - 489 prev_stats->mib_stats.reg_ofdm_phyerr_cnt; 490 491 if (unlikely(curr_stats->mib_stats.reg_cck_phyerr_cnt < 492 prev_stats->mib_stats.reg_cck_phyerr_cnt)) 493 reg_cck_phyerr_delta = curr_stats->mib_stats.reg_cck_phyerr_cnt; 494 else 495 reg_cck_phyerr_delta = 496 curr_stats->mib_stats.reg_cck_phyerr_cnt - 497 prev_stats->mib_stats.reg_cck_phyerr_cnt; 498 499 /* 500 * Add the influence of ofdm phy errors to the wasted channel 501 * utillization, this computed through time wasted in errors 502 */ 503 reg_ofdm_phyerr_cu = reg_ofdm_phyerr_delta * 504 dcs_host_params.phy_err_penalty; 505 total_wasted_cu += 506 (reg_ofdm_phyerr_cu > 0) ? 507 (((reg_ofdm_phyerr_cu >> 8) * 100) / scaled_reg_tsf_delta) : 0; 508 509 ofdm_phy_err_rate = (curr_stats->mib_stats.reg_ofdm_phyerr_cnt * 1000) / 510 curr_stats->mib_stats.listen_time; 511 cck_phy_err_rate = (curr_stats->mib_stats.reg_cck_phyerr_cnt * 1000) / 512 curr_stats->mib_stats.listen_time; 513 514 if (unlikely(dcs_host_params.dcs_debug >= DCS_DEBUG_VERBOSE)) { 515 dcs_debug("reg_unused_cu: %u, reg_ofdm_phyerr_delta: %u, reg_cck_phyerr_delta: %u, reg_ofdm_phyerr_cu: %u", 516 reg_unused_cu, reg_ofdm_phyerr_delta, 517 reg_cck_phyerr_delta, reg_ofdm_phyerr_cu); 518 dcs_debug("total_wasted_cu: %u, ofdm_phy_err_rate: %u, cck_phy_err_rate: %u", 519 total_wasted_cu, ofdm_phy_err_rate, cck_phy_err_rate); 520 dcs_debug("new_unused_cu: %u, reg_ofdm_phy_error_cu: %u", 521 reg_unused_cu, 522 (curr_stats->mib_stats.reg_ofdm_phyerr_cnt * 100) / 523 curr_stats->mib_stats.listen_time); 524 } 525 526 /* Check if the error rates are higher than the thresholds */ 527 max_phy_err_rate = QDF_MAX(ofdm_phy_err_rate, cck_phy_err_rate); 528 529 max_phy_err_count = QDF_MAX(curr_stats->mib_stats.reg_ofdm_phyerr_cnt, 530 curr_stats->mib_stats.reg_cck_phyerr_cnt); 531 532 if (unlikely(dcs_host_params.dcs_debug >= DCS_DEBUG_VERBOSE)) 533 dcs_debug("max_phy_err_rate: %u, max_phy_err_count: %u", 534 max_phy_err_rate, max_phy_err_count); 535 536 if (((max_phy_err_rate >= dcs_host_params.phy_err_threshold) && 537 (max_phy_err_count > dcs_host_params.phy_err_threshold)) || 538 (curr_stats->phyerr_cnt > dcs_host_params.radar_err_threshold)) 539 too_many_phy_errors = 1; 540 541 if (unlikely(dcs_host_params.dcs_debug >= DCS_DEBUG_CRITICAL)) { 542 dcs_debug("total_cu: %u, tx_cu: %u, rx_cu: %u, rx_time_cu: %u, unused cu: %u", 543 reg_total_cu, reg_tx_cu, 544 reg_rx_cu, rx_time_cu, reg_unused_cu); 545 dcs_debug("phyerr: %u, total_wasted_cu: %u, phyerror_cu: %u, wasted_cu: %u, reg_tx_cu: %u, reg_rx_cu: %u", 546 too_many_phy_errors, total_wasted_cu, 547 reg_ofdm_phyerr_cu, wasted_tx_cu, 548 reg_tx_cu, reg_rx_cu); 549 dcs_debug("tx_err: %u", tx_err); 550 } 551 552 if (reg_unused_cu >= dcs_host_params.coch_intfr_threshold) 553 /* Quickly reach to decision */ 554 p_dcs_im_stats->im_intfr_cnt += 2; 555 else if (too_many_phy_errors && 556 (((total_wasted_cu > 557 (dcs_host_params.coch_intfr_threshold + 10)) && 558 ((reg_tx_cu + reg_rx_cu) > dcs_host_params.user_max_cu)) || 559 ((reg_tx_cu > DCS_TX_MAX_CU) && 560 (tx_err >= dcs_host_params.tx_err_threshold)))) 561 p_dcs_im_stats->im_intfr_cnt++; 562 563 if (p_dcs_im_stats->im_intfr_cnt >= 564 dcs_host_params.intfr_detection_threshold) { 565 if (unlikely(dcs_host_params.dcs_debug >= DCS_DEBUG_CRITICAL)) { 566 dcs_debug("interference threshold exceeded"); 567 dcs_debug("unused_cu: %u, too_any_phy_errors: %u, total_wasted_cu: %u, reg_tx_cu: %u, reg_rx_cu: %u", 568 reg_unused_cu, too_many_phy_errors, 569 total_wasted_cu, reg_tx_cu, reg_rx_cu); 570 } 571 572 p_dcs_im_stats->im_intfr_cnt = 0; 573 p_dcs_im_stats->im_samp_cnt = 0; 574 /* 575 * Once the interference is detected, change the channel, as on 576 * today this is common routine for wirelesslan and 577 * non-wirelesslan interference. Name as such kept the same 578 * because of the DA code, which is using the same function. 579 */ 580 start_dcs_cbk_handler = true; 581 } else if (0 == p_dcs_im_stats->im_intfr_cnt || 582 p_dcs_im_stats->im_samp_cnt >= 583 dcs_host_params.intfr_detection_window) { 584 p_dcs_im_stats->im_intfr_cnt = 0; 585 p_dcs_im_stats->im_samp_cnt = 0; 586 } 587 588 /* Count the current run too */ 589 p_dcs_im_stats->im_samp_cnt++; 590 591 if (unlikely(dcs_host_params.dcs_debug >= DCS_DEBUG_VERBOSE)) 592 dcs_debug("intfr_count: %u, sample_count: %u", 593 p_dcs_im_stats->im_intfr_cnt, 594 p_dcs_im_stats->im_samp_cnt); 595 copy_stats: 596 /* Copy the stats for next cycle */ 597 wlan_dcs_im_copy_stats(prev_stats, curr_stats); 598 end: 599 return start_dcs_cbk_handler; 600 } 601 602 void wlan_dcs_disable_timer_fn(void *dcs_timer_args) 603 { 604 struct pdev_dcs_timer_args *dcs_timer_args_ctx; 605 struct wlan_objmgr_psoc *psoc; 606 uint32_t pdev_id; 607 struct dcs_psoc_priv_obj *dcs_psoc_priv; 608 struct dcs_pdev_priv_obj *dcs_pdev_priv; 609 610 if (!dcs_timer_args) { 611 dcs_err("dcs timer args is null"); 612 return; 613 } 614 615 dcs_timer_args_ctx = (struct pdev_dcs_timer_args *)dcs_timer_args; 616 psoc = dcs_timer_args_ctx->psoc; 617 pdev_id = dcs_timer_args_ctx->pdev_id; 618 619 dcs_psoc_priv = 620 wlan_objmgr_psoc_get_comp_private_obj(psoc, WLAN_UMAC_COMP_DCS); 621 if (!dcs_psoc_priv) { 622 dcs_err("dcs psoc private object is null"); 623 return; 624 } 625 626 dcs_pdev_priv = &dcs_psoc_priv->dcs_pdev_priv[pdev_id]; 627 dcs_pdev_priv->dcs_freq_ctrl_params.disable_delay_process = false; 628 629 dcs_info("dcs disable timeout, enable dcs detection again"); 630 wlan_dcs_set_algorithm_process(psoc, pdev_id, true); 631 } 632 633 /** 634 * wlan_dcs_frequency_control() - dcs frequency control handling 635 * @psoc: psoc pointer 636 * @dcs_pdev_priv: dcs pdev priv pointer 637 * @event: dcs stats event pointer 638 * 639 * Return: none 640 */ 641 static void wlan_dcs_frequency_control(struct wlan_objmgr_psoc *psoc, 642 struct dcs_pdev_priv_obj *dcs_pdev_priv, 643 struct wlan_host_dcs_event *event) 644 { 645 struct dcs_psoc_priv_obj *dcs_psoc_priv; 646 struct pdev_dcs_freq_ctrl_params *dcs_freq_ctrl_params; 647 uint8_t timestamp_pos; 648 unsigned long current_time; 649 uint8_t delta_pos; 650 unsigned long delta_time; 651 bool disable_dcs_sometime = false; 652 653 if (!psoc || !dcs_pdev_priv || !event) { 654 dcs_err("psoc or dcs_pdev_priv or event is null"); 655 return; 656 } 657 658 dcs_freq_ctrl_params = &dcs_pdev_priv->dcs_freq_ctrl_params; 659 if (dcs_freq_ctrl_params->disable_delay_process) { 660 dcs_err("In the process of dcs disable, shouldn't go to here"); 661 return; 662 } 663 664 current_time = qdf_get_system_timestamp(); 665 if (dcs_freq_ctrl_params->dcs_happened_count >= 666 dcs_freq_ctrl_params->disable_threshold_per_5mins) { 667 delta_pos = 668 dcs_freq_ctrl_params->dcs_happened_count - 669 dcs_freq_ctrl_params->disable_threshold_per_5mins; 670 delta_pos = delta_pos % MAX_DCS_TIME_RECORD; 671 672 delta_time = current_time - 673 dcs_freq_ctrl_params->timestamp[delta_pos]; 674 if (delta_time < DCS_FREQ_CONTROL_TIME) 675 disable_dcs_sometime = true; 676 } 677 678 if (!disable_dcs_sometime) { 679 timestamp_pos = dcs_freq_ctrl_params->dcs_happened_count % 680 MAX_DCS_TIME_RECORD; 681 dcs_freq_ctrl_params->timestamp[timestamp_pos] = current_time; 682 dcs_freq_ctrl_params->dcs_happened_count++; 683 } 684 685 /* 686 * Before start dcs callback handler or disable dcs for some time, 687 * need to ignore dcs event data and won't do interference detection 688 * algorithm calculation for disabling dcs detection firstly. 689 */ 690 wlan_dcs_set_algorithm_process(psoc, event->dcs_param.pdev_id, false); 691 692 if (disable_dcs_sometime) { 693 dcs_freq_ctrl_params->disable_delay_process = true; 694 dcs_pdev_priv->dcs_timer_args.psoc = psoc; 695 dcs_pdev_priv->dcs_timer_args.pdev_id = 696 event->dcs_param.pdev_id; 697 qdf_timer_start(&dcs_pdev_priv->dcs_disable_timer, 698 dcs_pdev_priv->dcs_freq_ctrl_params. 699 restart_delay * 60 * 1000); 700 dcs_info("start dcs disable timer"); 701 } else { 702 dcs_psoc_priv = wlan_objmgr_psoc_get_comp_private_obj( 703 psoc, 704 WLAN_UMAC_COMP_DCS); 705 if (!dcs_psoc_priv) { 706 dcs_err("dcs private psoc object is null"); 707 return; 708 } 709 710 dcs_info("start dcs callback handler"); 711 dcs_psoc_priv->dcs_cbk.cbk(psoc, event->dcs_param.pdev_id, 712 event->dcs_param.interference_type, 713 dcs_psoc_priv->dcs_cbk.arg); 714 } 715 } 716 717 QDF_STATUS 718 wlan_dcs_switch_chan(struct wlan_objmgr_vdev *vdev, qdf_freq_t tgt_freq, 719 enum phy_ch_width tgt_width) 720 { 721 struct wlan_objmgr_psoc *psoc; 722 struct dcs_psoc_priv_obj *dcs_psoc_priv; 723 dcs_switch_chan_cb switch_chan_cb; 724 725 psoc = wlan_vdev_get_psoc(vdev); 726 if (!psoc) 727 return QDF_STATUS_E_INVAL; 728 729 dcs_psoc_priv = wlan_objmgr_psoc_get_comp_private_obj(psoc, 730 WLAN_UMAC_COMP_DCS); 731 if (!dcs_psoc_priv) 732 return QDF_STATUS_E_INVAL; 733 734 switch_chan_cb = dcs_psoc_priv->switch_chan_cb; 735 if (!switch_chan_cb) 736 return QDF_STATUS_E_NOSUPPORT; 737 738 return switch_chan_cb(vdev, tgt_freq, tgt_width); 739 } 740 741 #ifdef WLAN_POLICY_MGR_ENABLE 742 /** 743 * wlan_dcs_get_pcl_for_sap() - get preferred channel list for SAP 744 * @vdev: vdev ptr 745 * @freq_list: Pointer to PCL 746 * @freq_list_sz: Max size of PCL 747 * 748 * Return: number of channels in PCL 749 */ 750 static uint32_t wlan_dcs_get_pcl_for_sap(struct wlan_objmgr_vdev *vdev, 751 qdf_freq_t *freq_list, 752 uint32_t freq_list_sz) 753 { 754 struct wlan_objmgr_psoc *psoc; 755 struct wlan_objmgr_pdev *pdev; 756 struct policy_mgr_pcl_list *pcl; 757 qdf_freq_t freq; 758 enum channel_state state; 759 QDF_STATUS status; 760 int i, j; 761 762 psoc = wlan_vdev_get_psoc(vdev); 763 if (!psoc) 764 return 0; 765 766 pdev = wlan_vdev_get_pdev(vdev); 767 if (!pdev) 768 return 0; 769 770 pcl = qdf_mem_malloc(sizeof(*pcl)); 771 if (!pcl) 772 return 0; 773 774 status = policy_mgr_get_pcl_for_vdev_id(psoc, 775 PM_SAP_MODE, 776 pcl->pcl_list, &pcl->pcl_len, 777 pcl->weight_list, 778 QDF_ARRAY_SIZE(pcl->weight_list), 779 wlan_vdev_get_id(vdev)); 780 if (QDF_IS_STATUS_ERROR(status) || !pcl->pcl_len) { 781 qdf_mem_free(pcl); 782 return 0; 783 } 784 785 for (i = 0, j = 0; i < pcl->pcl_len && i < freq_list_sz; i++) { 786 freq = (qdf_freq_t)pcl->pcl_list[i]; 787 state = wlan_reg_get_channel_state_for_pwrmode( 788 pdev, 789 freq, 790 REG_CURRENT_PWR_MODE); 791 if (state != CHANNEL_STATE_ENABLE) 792 continue; 793 794 freq_list[j++] = freq; 795 } 796 797 qdf_mem_free(pcl); 798 return j; 799 } 800 #else 801 static uint32_t wlan_dcs_get_pcl_for_sap(struct wlan_objmgr_vdev *vdev, 802 qdf_freq_t *freq_list, 803 uint32_t freq_list_sz) 804 { 805 struct wlan_objmgr_pdev *pdev; 806 struct regulatory_channel *cur_chan_list; 807 qdf_freq_t freq; 808 enum channel_state state; 809 int i, j; 810 811 pdev = wlan_vdev_get_pdev(vdev); 812 if (!pdev) 813 return 0; 814 815 cur_chan_list = qdf_mem_malloc(NUM_CHANNELS * 816 sizeof(struct regulatory_channel)); 817 if (!cur_chan_list) 818 return 0; 819 820 if (wlan_reg_get_current_chan_list(pdev, cur_chan_list) != 821 QDF_STATUS_SUCCESS) { 822 qdf_mem_free(cur_chan_list); 823 return 0; 824 } 825 826 for (i = 0, j = 0; i < NUM_CHANNELS && i < freq_list_sz; i++) { 827 freq = cur_chan_list[i].center_freq; 828 state = wlan_reg_get_channel_state_for_pwrmode( 829 pdev, 830 freq, 831 REG_CURRENT_PWR_MODE); 832 if (state != CHANNEL_STATE_ENABLE) 833 continue; 834 835 freq_list[j++] = freq; 836 } 837 838 qdf_mem_free(cur_chan_list); 839 return j; 840 } 841 #endif 842 843 /** 844 * wlan_dcs_awgn_get_intf_for_seg() - get interference for specified segment 845 * @awgn_info: awgn info pointer 846 * @segment: segment index in channel band 847 * 848 * This function extracts the information from awgn event and check interference 849 * within the specified segment. 850 * 851 * Return: true if interference is found within the segment, false otherwise. 852 */ 853 static bool 854 wlan_dcs_awgn_get_intf_for_seg(struct wlan_host_dcs_awgn_info *awgn_info, 855 uint32_t segment) 856 { 857 uint32_t seg_mask; 858 859 switch (segment) { 860 case WLAN_DCS_SEG_PRI20: 861 seg_mask = WLAN_DCS_SEG_PRI20_MASK; 862 break; 863 case WLAN_DCS_SEG_SEC20: 864 seg_mask = WLAN_DCS_SEG_SEC20_MASK; 865 break; 866 case WLAN_DCS_SEG_SEC40: 867 seg_mask = WLAN_DCS_SEG_SEC40_MASK; 868 break; 869 case WLAN_DCS_SEG_SEC80: 870 seg_mask = WLAN_DCS_SEG_SEC80_MASK; 871 break; 872 case WLAN_DCS_SEG_SEC160: 873 seg_mask = WLAN_DCS_SEG_SEC160_MASK; 874 break; 875 default: 876 seg_mask = 0xFFFFFFFF; 877 break; 878 } 879 880 return (awgn_info->chan_bw_intf_bitmap & seg_mask); 881 } 882 883 /** 884 * wlan_dcs_get_max_seg_idx() - get max segment index for channel width 885 * @width: channel width 886 * 887 * Return: max segment index(enum wlan_dcs_chan_seg) for the channel width. 888 */ 889 static enum wlan_dcs_chan_seg wlan_dcs_get_max_seg_idx(enum phy_ch_width width) 890 { 891 switch (width) { 892 case CH_WIDTH_160MHZ: 893 case CH_WIDTH_80P80MHZ: 894 return WLAN_DCS_SEG_SEC80; 895 case CH_WIDTH_80MHZ: 896 return WLAN_DCS_SEG_SEC40; 897 case CH_WIDTH_40MHZ: 898 return WLAN_DCS_SEG_SEC20; 899 case CH_WIDTH_20MHZ: 900 return WLAN_DCS_SEG_PRI20; 901 default: 902 dcs_err("Invalid ch width %d", width); 903 return WLAN_DCS_SEG_INVALID; 904 } 905 } 906 907 /** 908 * wlan_dcs_get_chan_width_for_seg() - get channel width for specified segment 909 * @seg_idx: segment index 910 * 911 * Return: channel width for segment index 912 */ 913 static enum phy_ch_width 914 wlan_dcs_get_chan_width_for_seg(enum wlan_dcs_chan_seg seg_idx) 915 { 916 switch (seg_idx) { 917 case WLAN_DCS_SEG_SEC80: 918 return CH_WIDTH_160MHZ; 919 case WLAN_DCS_SEG_SEC40: 920 return CH_WIDTH_80MHZ; 921 case WLAN_DCS_SEG_SEC20: 922 return CH_WIDTH_40MHZ; 923 case WLAN_DCS_SEG_PRI20: 924 return CH_WIDTH_20MHZ; 925 default: 926 dcs_err("Invalid seg idx %d", seg_idx); 927 return CH_WIDTH_INVALID; 928 } 929 } 930 931 /** 932 * wlan_dcs_get_max_no_intf_bw() - get max no interference band width 933 * @awgn_info: pointer to awgn info 934 * @width: pointer to channel width 935 * 936 * This function tries to get max no interference band width according to 937 * awgn event. 938 * 939 * Return: true if valid no interference band width is found, false otherwise. 940 */ 941 static bool 942 wlan_dcs_get_max_no_intf_bw(struct wlan_host_dcs_awgn_info *awgn_info, 943 enum phy_ch_width *width) 944 { 945 enum wlan_dcs_chan_seg seg_idx, max_seg_idx; 946 947 max_seg_idx = wlan_dcs_get_max_seg_idx(awgn_info->channel_width); 948 if (max_seg_idx == WLAN_DCS_SEG_INVALID) 949 return false; 950 951 seg_idx = WLAN_DCS_SEG_PRI20; 952 while (seg_idx <= max_seg_idx) { 953 if (wlan_dcs_awgn_get_intf_for_seg(awgn_info, seg_idx)) { 954 dcs_debug("Intf found for seg idx %d", seg_idx); 955 break; 956 } 957 seg_idx++; 958 } 959 960 /* scroll back to the last no-intf idx */ 961 seg_idx--; 962 963 if (seg_idx == WLAN_DCS_SEG_INVALID) { 964 /* If pri20 contains interference, do full channel change */ 965 dcs_debug("Primary 20MHz Channel interference detected"); 966 return false; 967 } 968 969 *width = wlan_dcs_get_chan_width_for_seg(seg_idx); 970 if (*width == CH_WIDTH_160MHZ && 971 awgn_info->channel_width == CH_WIDTH_80P80MHZ) 972 *width = CH_WIDTH_80P80MHZ; 973 974 dcs_debug("Found the max no intf width %d", *width); 975 return (*width != CH_WIDTH_INVALID); 976 } 977 978 /** 979 * wlan_dcs_get_available_chan_for_bw() - get available channel for specified 980 * band width 981 * @pdev: pdev ptr 982 * @awgn_info: pointer to awgn info 983 * @bw: channel width 984 * @freq_list: List of preferred channels 985 * @freq_num: Number of channels in the PCL 986 * @random: request for random channel 987 * 988 * Return: the selected channel frequency, 0 if no available chan is found. 989 */ 990 static qdf_freq_t 991 wlan_dcs_get_available_chan_for_bw(struct wlan_objmgr_pdev *pdev, 992 struct wlan_host_dcs_awgn_info *awgn_info, 993 enum phy_ch_width bw, qdf_freq_t *freq_list, 994 uint32_t freq_num, bool random) 995 { 996 int i, j = 0; 997 uint32_t random_chan_idx; 998 qdf_freq_t freq, selected_freq = 0; 999 const struct bonded_channel_freq *bonded_chan_ptr = NULL; 1000 enum channel_state state; 1001 uint16_t chan_cfreq; 1002 bool is_safe = true; 1003 1004 if (!freq_list || !freq_num) 1005 return selected_freq; 1006 1007 for (i = 0; i < freq_num; i++) { 1008 if (j && !random) { 1009 selected_freq = freq_list[0]; 1010 dcs_debug("get the first available freq %u for bw %u", 1011 selected_freq, bw); 1012 break; 1013 } 1014 1015 freq = freq_list[i]; 1016 if (!WLAN_REG_IS_SAME_BAND_FREQS(freq, awgn_info->center_freq)) 1017 continue; 1018 1019 /* 1020 * DFS channel may need CAC during restart, which costs time 1021 * and may cause failure. 1022 */ 1023 if (wlan_reg_is_dfs_for_freq(pdev, freq)) { 1024 dcs_debug("skip dfs freq %u", freq); 1025 continue; 1026 } 1027 1028 if (bonded_chan_ptr && 1029 freq >= bonded_chan_ptr->start_freq && 1030 freq <= bonded_chan_ptr->end_freq) { 1031 if (is_safe) { 1032 dcs_debug("add freq directly [%d] = %u", 1033 j, freq); 1034 freq_list[j++] = freq; 1035 } 1036 continue; 1037 } 1038 1039 state = wlan_reg_get_5g_bonded_channel_and_state_for_pwrmode( 1040 pdev, freq, bw, &bonded_chan_ptr, 1041 REG_CURRENT_PWR_MODE, 1042 NO_SCHANS_PUNC); 1043 if (state != CHANNEL_STATE_ENABLE) 1044 continue; 1045 1046 /* no bonding channel for 20MHz */ 1047 if (bw == CH_WIDTH_20MHZ) { 1048 if (WLAN_DCS_IS_FREQ_IN_WIDTH(awgn_info->center_freq, 1049 awgn_info->center_freq0, 1050 awgn_info->center_freq1, 1051 awgn_info->channel_width, 1052 freq)) 1053 continue; 1054 1055 dcs_debug("add freq[%d] = %u", j, freq); 1056 freq_list[j++] = freq; 1057 continue; 1058 } 1059 1060 is_safe = true; 1061 chan_cfreq = bonded_chan_ptr->start_freq; 1062 while (chan_cfreq <= bonded_chan_ptr->end_freq) { 1063 if (WLAN_DCS_IS_FREQ_IN_WIDTH(awgn_info->center_freq, 1064 awgn_info->center_freq0, 1065 awgn_info->center_freq1, 1066 awgn_info->channel_width, 1067 chan_cfreq)) { 1068 is_safe = false; 1069 break; 1070 } 1071 chan_cfreq = chan_cfreq + 20; 1072 } 1073 if (is_safe) { 1074 dcs_debug("add freq[%d] = %u", j, freq); 1075 freq_list[j++] = freq; 1076 } 1077 } 1078 1079 if (j && random) { 1080 qdf_get_random_bytes(&random_chan_idx, sizeof(random_chan_idx)); 1081 random_chan_idx = random_chan_idx % j; 1082 selected_freq = freq_list[random_chan_idx]; 1083 dcs_debug("get freq[%d] = %u for bw %u", 1084 random_chan_idx, selected_freq, bw); 1085 } 1086 1087 return selected_freq; 1088 } 1089 1090 /** 1091 * wlan_dcs_sap_select_chan() - get available channel for sap 1092 * @vdev: vdev ptr 1093 * @awgn_info: pointer to awgn info 1094 * @tgt_freq: frequency of the selected channel 1095 * @tgt_width: band width of the selected channel 1096 * @random: request for random channel 1097 * 1098 * This function tries to get no-interference chan with max possible bandwidth 1099 * from pcl for sap according to awgn info. 1100 * 1101 * Return: true if available channel is found, false otherwise. 1102 */ 1103 static bool 1104 wlan_dcs_sap_select_chan(struct wlan_objmgr_vdev *vdev, 1105 struct wlan_host_dcs_awgn_info *awgn_info, 1106 qdf_freq_t *tgt_freq, enum phy_ch_width *tgt_width, 1107 bool random) 1108 { 1109 int32_t tmp_width; 1110 qdf_freq_t tmp_freq = 0; 1111 struct wlan_objmgr_pdev *pdev; 1112 qdf_freq_t *freq_list; 1113 uint32_t freq_num; 1114 1115 freq_list = qdf_mem_malloc(sizeof(*freq_list) * NUM_CHANNELS); 1116 if (!freq_list) 1117 return false; 1118 1119 freq_num = wlan_dcs_get_pcl_for_sap(vdev, freq_list, NUM_CHANNELS); 1120 if (!freq_num) { 1121 qdf_mem_free(freq_list); 1122 return false; 1123 } 1124 1125 tmp_width = awgn_info->channel_width; 1126 pdev = wlan_vdev_get_pdev(vdev); 1127 if (!pdev) { 1128 qdf_mem_free(freq_list); 1129 return false; 1130 } 1131 1132 while (tmp_width >= CH_WIDTH_20MHZ) { 1133 tmp_freq = wlan_dcs_get_available_chan_for_bw(pdev, awgn_info, 1134 tmp_width, 1135 freq_list, 1136 freq_num, 1137 random); 1138 if (tmp_freq) 1139 break; 1140 tmp_width--; 1141 } 1142 1143 if (tmp_freq) { 1144 *tgt_width = tmp_width; 1145 *tgt_freq = tmp_freq; 1146 dcs_debug("new_width: %d new_freq %u", tmp_width, tmp_freq); 1147 1148 qdf_mem_free(freq_list); 1149 return true; 1150 } 1151 1152 qdf_mem_free(freq_list); 1153 return false; 1154 } 1155 1156 /** 1157 * wlan_dcs_is_awgnim_valid() - validate awgn info 1158 * @awgn_info: pointer to awgn info 1159 * 1160 * Return: true if valid, false otherwise. 1161 */ 1162 static inline bool 1163 wlan_dcs_is_awgnim_valid(struct wlan_host_dcs_awgn_info *awgn_info) 1164 { 1165 return (awgn_info && 1166 awgn_info->center_freq && awgn_info->chan_bw_intf_bitmap && 1167 awgn_info->channel_width != CH_WIDTH_INVALID && 1168 WLAN_REG_IS_6GHZ_CHAN_FREQ(awgn_info->center_freq)); 1169 } 1170 1171 /** 1172 * wlan_dcs_vdev_get_op_chan_info() - get operating channel info for vdev 1173 * @vdev: pointer to vdev object 1174 * @cfreq: Center frequency of primary channel 1175 * @cfreq0: Center frequency of segment 1 1176 * @cfreq1: Center frequency of segment 2 1177 * @ch_width: Channel width, enum phy_ch_width 1178 * 1179 * Return: QDF_STATUS 1180 */ 1181 static QDF_STATUS 1182 wlan_dcs_vdev_get_op_chan_info(struct wlan_objmgr_vdev *vdev, 1183 qdf_freq_t *cfreq, qdf_freq_t *cfreq0, 1184 qdf_freq_t *cfreq1, enum phy_ch_width *ch_width) 1185 { 1186 struct wlan_channel *chan; 1187 1188 if (!vdev) 1189 return QDF_STATUS_E_INVAL; 1190 1191 *cfreq = 0; 1192 *cfreq0 = 0; 1193 *cfreq1 = 0; 1194 *ch_width = 0; 1195 1196 if (wlan_vdev_mlme_is_active(vdev) != QDF_STATUS_SUCCESS) 1197 return QDF_STATUS_E_INVAL; 1198 1199 chan = wlan_vdev_get_active_channel(vdev); 1200 if (!chan) 1201 return QDF_STATUS_E_INVAL; 1202 1203 *cfreq = chan->ch_freq; 1204 *cfreq0 = chan->ch_cfreq1; 1205 *cfreq1 = chan->ch_cfreq2; 1206 *ch_width = chan->ch_width; 1207 1208 return QDF_STATUS_SUCCESS; 1209 } 1210 1211 /** 1212 * wlan_dcs_process_awgn_sta() - process AWGN event for STA 1213 * @pdev: pointer to pdev object 1214 * @object: vdev object 1215 * @arg: Arguments to the handler 1216 * 1217 * Return: void 1218 */ 1219 static void wlan_dcs_process_awgn_sta(struct wlan_objmgr_pdev *pdev, 1220 void *object, void *arg) 1221 { 1222 struct wlan_objmgr_vdev *vdev = object; 1223 struct wlan_host_dcs_awgn_info *awgn_info = arg; 1224 enum phy_ch_width ch_width; 1225 enum phy_ch_width tgt_width = CH_WIDTH_INVALID; 1226 qdf_freq_t op_freq, cfreq0, cfreq1; 1227 qdf_freq_t tgt_freq = 0; 1228 QDF_STATUS status; 1229 uint8_t vdev_id; 1230 bool found; 1231 1232 if (!vdev || !pdev) 1233 return; 1234 1235 if (wlan_vdev_mlme_get_opmode(vdev) != QDF_STA_MODE) 1236 return; 1237 1238 vdev_id = wlan_vdev_get_id(vdev); 1239 status = wlan_dcs_vdev_get_op_chan_info(vdev, &op_freq, &cfreq0, 1240 &cfreq1, &ch_width); 1241 if (QDF_IS_STATUS_ERROR(status)) 1242 return; 1243 1244 if (awgn_info->center_freq != op_freq) { 1245 dcs_debug("STA-%d: freq not match", vdev_id); 1246 return; 1247 } 1248 1249 found = wlan_dcs_get_max_no_intf_bw(awgn_info, &tgt_width); 1250 if (found) { 1251 if (ch_width <= tgt_width) { 1252 dcs_debug("STA-%d: freq and bw are unchanged", vdev_id); 1253 return; 1254 } 1255 1256 tgt_freq = op_freq; 1257 } 1258 1259 /* If no width is found, means to disconnect */ 1260 dcs_debug("STA-%d: target freq %u width %u", 1261 vdev_id, tgt_freq, tgt_width); 1262 wlan_dcs_switch_chan(vdev, tgt_freq, tgt_width); 1263 } 1264 1265 /** 1266 * wlan_dcs_process_awgn_sap() - process AWGN event for SAP 1267 * @pdev: pointer to pdev object 1268 * @object: vdev object 1269 * @arg: Arguments to the handler 1270 * 1271 * Return: void 1272 */ 1273 static void wlan_dcs_process_awgn_sap(struct wlan_objmgr_pdev *pdev, 1274 void *object, void *arg) 1275 { 1276 struct wlan_objmgr_vdev *vdev = object; 1277 struct wlan_host_dcs_awgn_info *awgn_info = arg; 1278 enum phy_ch_width ch_width; 1279 enum phy_ch_width tgt_width = CH_WIDTH_INVALID; 1280 qdf_freq_t op_freq, cfreq0, cfreq1; 1281 qdf_freq_t tgt_freq = 0; 1282 QDF_STATUS status; 1283 uint8_t vdev_id; 1284 bool found; 1285 1286 if (!vdev || !pdev) 1287 return; 1288 1289 if (wlan_vdev_mlme_get_opmode(vdev) != QDF_SAP_MODE) 1290 return; 1291 1292 vdev_id = wlan_vdev_get_id(vdev); 1293 status = wlan_dcs_vdev_get_op_chan_info(vdev, &op_freq, &cfreq0, &cfreq1, &ch_width); 1294 if (QDF_IS_STATUS_ERROR(status)) 1295 return; 1296 1297 if (awgn_info->center_freq != op_freq) { 1298 dcs_debug("SAP-%d: freq not match rpt:%u - op:%u", 1299 vdev_id, awgn_info->center_freq, op_freq); 1300 return; 1301 } 1302 1303 found = wlan_dcs_get_max_no_intf_bw(awgn_info, &tgt_width); 1304 if (found) { 1305 if (ch_width <= tgt_width) { 1306 dcs_debug("SAP-%d: both freq and bw are unchanged", 1307 vdev_id); 1308 return; 1309 } 1310 1311 tgt_freq = op_freq; 1312 } else { 1313 wlan_dcs_sap_select_chan(vdev, awgn_info, &tgt_freq, 1314 &tgt_width, true); 1315 } 1316 1317 /* If no chan is selected, means to stop sap */ 1318 dcs_debug("SAP-%d: target freq %u width %u", 1319 vdev_id, tgt_freq, tgt_width); 1320 wlan_dcs_switch_chan(vdev, tgt_freq, tgt_width); 1321 } 1322 1323 /** 1324 * wlan_dcs_awgn_process() - process awgn IM 1325 * @psoc: psoc ptr 1326 * @pdev_id: pdev id 1327 * @awgn_info: pointer to awgn info 1328 * 1329 * This function triggers channel change for all STAs and SAPs, according 1330 * to AWGN info. 1331 * 1332 * Return: None. 1333 */ 1334 static void 1335 wlan_dcs_awgn_process(struct wlan_objmgr_psoc *psoc, uint8_t pdev_id, 1336 struct wlan_host_dcs_awgn_info *awgn_info) 1337 { 1338 struct wlan_objmgr_pdev *pdev; 1339 1340 if (!wlan_dcs_is_awgnim_valid(awgn_info)) { 1341 dcs_err("Invalid awgnim event"); 1342 return; 1343 } 1344 1345 pdev = wlan_objmgr_get_pdev_by_id(psoc, pdev_id, WLAN_DCS_ID); 1346 if (!pdev) { 1347 dcs_err("Invalid pdev id %d", pdev_id); 1348 return; 1349 } 1350 1351 dcs_debug("pdev id %u width %u freq %u freq0 %u fre1 %u bitmap 0x%x", 1352 pdev_id, awgn_info->channel_width, awgn_info->center_freq, 1353 awgn_info->center_freq0, awgn_info->center_freq1, 1354 awgn_info->chan_bw_intf_bitmap); 1355 1356 wlan_objmgr_pdev_iterate_obj_list(pdev, WLAN_VDEV_OP, 1357 wlan_dcs_process_awgn_sta, 1358 awgn_info, 0, WLAN_DCS_ID); 1359 1360 wlan_objmgr_pdev_iterate_obj_list(pdev, WLAN_VDEV_OP, 1361 wlan_dcs_process_awgn_sap, 1362 awgn_info, 0, WLAN_DCS_ID); 1363 1364 wlan_objmgr_pdev_release_ref(pdev, WLAN_DCS_ID); 1365 } 1366 1367 #ifdef CONFIG_AFC_SUPPORT 1368 /** 1369 * wlan_dcs_afc_sel_chan() - Select SAP new channel/bandwidth when AFC updated 1370 * @psoc: pointer to soc 1371 * @vdev_id: vdev id 1372 * @cur_freq: current channel frequency 1373 * @cur_bw: current channel bandwidth 1374 * @pref_bw: pointer to bandwidth of prefer to switch to when input, and target 1375 * bandwidth decided to switch to 1376 * 1377 * Return: target channel frequency to switch to 1378 */ 1379 static qdf_freq_t wlan_dcs_afc_sel_chan(struct wlan_objmgr_psoc *psoc, 1380 uint32_t vdev_id, 1381 qdf_freq_t cur_freq, 1382 enum phy_ch_width cur_bw, 1383 enum phy_ch_width *pref_bw) 1384 { 1385 struct dcs_psoc_priv_obj *dcs_psoc_priv; 1386 dcs_afc_select_chan_cb afc_sel_chan_cb; 1387 1388 if (!psoc) 1389 return 0; 1390 1391 dcs_psoc_priv = wlan_objmgr_psoc_get_comp_private_obj( 1392 psoc, 1393 WLAN_UMAC_COMP_DCS); 1394 if (!dcs_psoc_priv) 1395 return 0; 1396 1397 afc_sel_chan_cb = dcs_psoc_priv->afc_sel_chan_cbk.cbk; 1398 if (!afc_sel_chan_cb) 1399 return 0; 1400 1401 return afc_sel_chan_cb(dcs_psoc_priv->afc_sel_chan_cbk.arg, 1402 vdev_id, cur_freq, cur_bw, pref_bw); 1403 } 1404 1405 /** 1406 * wlan_dcs_afc_get_conn_info() - Iterate function to get connection channel 1407 * information of every vdev 1408 * @pdev: pointer to pdev 1409 * @object: pointer to iteration object 1410 * @arg: pointer to iteration argument 1411 * 1412 * Return: void 1413 */ 1414 static void 1415 wlan_dcs_afc_get_conn_info(struct wlan_objmgr_pdev *pdev, 1416 void *object, void *arg) 1417 { 1418 struct wlan_objmgr_vdev *vdev = object; 1419 struct wlan_dcs_conn_info *conn_info = arg; 1420 enum QDF_OPMODE op_mode; 1421 struct wlan_channel *chan; 1422 uint8_t vdev_id; 1423 1424 if (!vdev || !pdev || !conn_info) 1425 return; 1426 1427 if (conn_info->exit_condition) 1428 return; 1429 1430 if (wlan_vdev_mlme_is_active(vdev) != QDF_STATUS_SUCCESS) 1431 return; 1432 1433 vdev_id = wlan_vdev_get_id(vdev); 1434 op_mode = wlan_vdev_mlme_get_opmode(vdev); 1435 chan = wlan_vdev_get_active_channel(vdev); 1436 if (!chan) 1437 return; 1438 1439 switch (op_mode) { 1440 case QDF_STA_MODE: 1441 if (conn_info->sta_cnt >= WLAN_DCS_MAX_STA_NUM) { 1442 dcs_debug("too many STAs"); 1443 conn_info->exit_condition = true; 1444 break; 1445 } 1446 conn_info->sta[conn_info->sta_cnt].freq = chan->ch_freq; 1447 conn_info->sta[conn_info->sta_cnt].bw = chan->ch_width; 1448 conn_info->sta[conn_info->sta_cnt].vdev_id = vdev_id; 1449 conn_info->sta_cnt++; 1450 break; 1451 case QDF_SAP_MODE: 1452 if (WLAN_REG_IS_5GHZ_CH_FREQ(chan->ch_freq)) { 1453 if (conn_info->sap_5ghz_cnt >= WLAN_DCS_MAX_SAP_NUM) { 1454 dcs_debug("too many 5 GHz SAPs"); 1455 conn_info->exit_condition = true; 1456 } 1457 conn_info->sap_5ghz[conn_info->sap_5ghz_cnt].freq = 1458 chan->ch_freq; 1459 conn_info->sap_5ghz[conn_info->sap_5ghz_cnt].bw = 1460 chan->ch_width; 1461 conn_info->sap_5ghz[conn_info->sap_5ghz_cnt].vdev_id = 1462 vdev_id; 1463 conn_info->sap_5ghz_cnt++; 1464 } else if (WLAN_REG_IS_6GHZ_CHAN_FREQ(chan->ch_freq)) { 1465 if (conn_info->sap_6ghz_cnt >= WLAN_DCS_MAX_SAP_NUM) { 1466 dcs_debug("too many 6 GHz SAPs"); 1467 conn_info->exit_condition = true; 1468 } 1469 conn_info->sap_6ghz[conn_info->sap_6ghz_cnt].freq = 1470 chan->ch_freq; 1471 conn_info->sap_6ghz[conn_info->sap_6ghz_cnt].bw = 1472 chan->ch_width; 1473 conn_info->sap_6ghz[conn_info->sap_6ghz_cnt].vdev_id = 1474 vdev_id; 1475 conn_info->sap_6ghz_cnt++; 1476 } 1477 break; 1478 default: 1479 dcs_debug("not support op mode %d", op_mode); 1480 conn_info->exit_condition = true; 1481 break; 1482 } 1483 } 1484 1485 /** 1486 * wlan_dcs_afc_reduce_bw() - Get target bandwidth with fixed channel frequency 1487 * @pdev: pointer to pdev 1488 * @freq: channel frequency which is fixed because SCC with STA 1489 * @input_bw: SAP current channel bandwidth 1490 * 1491 * This function check every sub 20 MHz channel state which update by AFC, and 1492 * reduce channel bandwidth if sub channel is disable. 1493 * 1494 * Return: Reduced channel bandwidth 1495 */ 1496 static enum phy_ch_width wlan_dcs_afc_reduce_bw(struct wlan_objmgr_pdev *pdev, 1497 qdf_freq_t freq, 1498 enum phy_ch_width input_bw) 1499 { 1500 const struct bonded_channel_freq *bonded_chan_ptr = NULL; 1501 enum channel_state state; 1502 qdf_freq_t start_freq; 1503 bool find; 1504 1505 if (input_bw <= CH_WIDTH_20MHZ) 1506 return input_bw; 1507 1508 while (input_bw > CH_WIDTH_20MHZ) { 1509 state = wlan_reg_get_5g_bonded_channel_and_state_for_pwrmode( 1510 pdev, freq, input_bw, &bonded_chan_ptr, 1511 REG_CURRENT_PWR_MODE, NO_SCHANS_PUNC); 1512 if (state != CHANNEL_STATE_ENABLE) { 1513 input_bw = wlan_reg_get_next_lower_bandwidth(input_bw); 1514 continue; 1515 } 1516 find = false; 1517 start_freq = bonded_chan_ptr->start_freq; 1518 while (start_freq <= bonded_chan_ptr->end_freq) { 1519 if (wlan_reg_is_disable_in_secondary_list_for_freq( 1520 pdev, start_freq)) { 1521 find = true; 1522 break; 1523 } 1524 start_freq += 20; 1525 } 1526 if (find) 1527 input_bw = wlan_reg_get_next_lower_bandwidth(input_bw); 1528 else 1529 return input_bw; 1530 } 1531 return input_bw; 1532 } 1533 1534 /** 1535 * wlan_sap_update_tpc_on_channel() - Update vdev channel TPC parameters and 1536 * send TPC command 1537 * @pdev: pointer to pdev 1538 * @vdev_id: vdev id 1539 * @freq: SAP 6 GHz channel frequency 1540 * @bw: SAP 6 GHz channel bandwidth 1541 * 1542 * Return: void 1543 */ 1544 static void 1545 wlan_sap_update_tpc_on_channel(struct wlan_objmgr_pdev *pdev, uint8_t vdev_id, 1546 qdf_freq_t freq, enum phy_ch_width bw) 1547 { 1548 struct wlan_objmgr_psoc *psoc = wlan_pdev_get_psoc(pdev); 1549 struct wlan_lmac_if_reg_tx_ops *tx_ops; 1550 struct vdev_mlme_obj *mlme_obj; 1551 struct wlan_objmgr_vdev *vdev; 1552 struct reg_tpc_power_info *tpc; 1553 bool is_psd; 1554 uint32_t i; 1555 uint16_t tx_power; 1556 int16_t psd_eirp; 1557 enum reg_6g_ap_type power_type; 1558 1559 if (!wlan_reg_is_ext_tpc_supported(psoc)) 1560 return; 1561 1562 if (wlan_reg_decide_6ghz_power_within_bw_for_freq( 1563 pdev, freq, bw, &is_psd, &tx_power, &psd_eirp, &power_type, 1564 REG_CURRENT_PWR_MODE, NO_SCHANS_PUNC) != 1565 QDF_STATUS_SUCCESS) 1566 return; 1567 1568 vdev = wlan_objmgr_get_vdev_by_id_from_psoc(psoc, vdev_id, WLAN_DCS_ID); 1569 if (!vdev) 1570 return; 1571 1572 tx_ops = wlan_reg_get_tx_ops(psoc); 1573 1574 mlme_obj = wlan_vdev_mlme_get_cmpt_obj(vdev); 1575 if (!mlme_obj) { 1576 dcs_err("vdev mlme obj is NULL"); 1577 goto release_vdev; 1578 } 1579 1580 tpc = &mlme_obj->reg_tpc_obj; 1581 if (tpc->is_psd_power != is_psd) { 1582 dcs_debug("psd flag changed"); 1583 goto release_vdev; 1584 } 1585 tpc->eirp_power = tx_power; 1586 tpc->power_type_6g = power_type; 1587 for (i = 0; i < tpc->num_pwr_levels; i++) { 1588 if (is_psd) 1589 tpc->chan_power_info[i].tx_power = (uint8_t)psd_eirp; 1590 else 1591 tpc->chan_power_info[i].tx_power = (uint8_t)tx_power; 1592 } 1593 1594 dcs_debug("6 GHz pwr type %d, is psd %d, pwr %d, psd %d, num pwr %d", 1595 power_type, is_psd, tx_power, psd_eirp, tpc->num_pwr_levels); 1596 1597 if (tx_ops->set_tpc_power) 1598 tx_ops->set_tpc_power(psoc, vdev_id, tpc); 1599 1600 release_vdev: 1601 wlan_objmgr_vdev_release_ref(vdev, WLAN_DCS_ID); 1602 } 1603 1604 /** 1605 * wlan_dcs_afc_sap_dcs_with_sta() - SAP channel switch when coexist with STA 1606 * @pdev: pointer to pdev handle 1607 * @conn_info: pointer to connection context of AFC DCS 1608 * 1609 * This function update TPC or restart SAP if doing SCC on 6 GHz with STA 1610 * 1611 * Return: void 1612 */ 1613 static void 1614 wlan_dcs_afc_sap_dcs_with_sta(struct wlan_objmgr_pdev *pdev, 1615 struct wlan_dcs_conn_info *conn_info) 1616 { 1617 uint32_t i; 1618 qdf_freq_t target_freq = conn_info->sta[0].freq; 1619 enum phy_ch_width target_bw = CH_WIDTH_20MHZ; 1620 struct wlan_objmgr_vdev *vdev; 1621 1622 if (!WLAN_REG_IS_6GHZ_CHAN_FREQ(conn_info->sta[0].freq)) 1623 return; 1624 1625 for (i = 0; i < conn_info->sap_6ghz_cnt; i++) { 1626 if (conn_info->sap_6ghz[i].freq == 1627 conn_info->sta[0].freq) { 1628 /* 1629 * sta operate under control of ap, if stop sap, 1630 * cannot start by itself, so just update tpc as sta, 1631 * if tx power is minimum of SCC tpc commands, no 1632 * need to update sap tpc command. 1633 * assume sta will move to safe channel by ap and 1634 * sap can move channel accordingly. 1635 */ 1636 if (wlan_reg_is_disable_in_secondary_list_for_freq( 1637 pdev, conn_info->sta[0].freq)) 1638 continue; 1639 1640 target_bw = wlan_dcs_afc_reduce_bw( 1641 pdev, 1642 conn_info->sap_6ghz[i].freq, 1643 conn_info->sap_6ghz[i].bw); 1644 1645 if (target_bw == conn_info->sap_6ghz[i].bw) { 1646 wlan_sap_update_tpc_on_channel( 1647 pdev, 1648 conn_info->sap_6ghz[i].vdev_id, 1649 conn_info->sap_6ghz[i].freq, 1650 target_bw); 1651 continue; 1652 } 1653 1654 vdev = wlan_objmgr_get_vdev_by_id_from_pdev( 1655 pdev, 1656 conn_info->sap_6ghz[i].vdev_id, 1657 WLAN_DCS_ID); 1658 if (!vdev) 1659 continue; 1660 1661 /* tpc update once csa complete */ 1662 wlan_dcs_switch_chan(vdev, target_freq, target_bw); 1663 wlan_objmgr_vdev_release_ref(vdev, WLAN_DCS_ID); 1664 } 1665 } 1666 } 1667 1668 #ifdef WLAN_POLICY_MGR_ENABLE 1669 /** 1670 * wlan_dcs_afc_6ghz_capable() - API to check SAP configure is able to operate 1671 * on 6 GHz 1672 * @psoc: pointer to SOC 1673 * @vdev_id: vdev id 1674 * 1675 * Return: Return true if SAP is able to operate on 6 GHz 1676 */ 1677 static inline bool 1678 wlan_dcs_afc_6ghz_capable(struct wlan_objmgr_psoc *psoc, uint8_t vdev_id) 1679 { 1680 return policy_mgr_get_ap_6ghz_capable(psoc, vdev_id, NULL); 1681 } 1682 #else 1683 static inline bool 1684 wlan_dcs_afc_6ghz_capable(struct wlan_objmgr_psoc *psoc, uint8_t vdev_id) 1685 { 1686 return false; 1687 } 1688 #endif 1689 1690 /** 1691 * wlan_dcs_afc_5ghz6ghz_sap_dcs() - SAP on 5 GHz or 6 GHz channel to do 1692 * channel switch. 1693 * @pdev: pointer to pdev handle 1694 * @conn_info: pointer to connection context for AFC DCS 1695 * 1696 * This function is trigger by AFC event and 6 GHz channels' state has been 1697 * updated, restart SAP to SP channel if possible, gain better performance. 1698 * 1699 * Return: void 1700 */ 1701 static void 1702 wlan_dcs_afc_5ghz6ghz_sap_dcs(struct wlan_objmgr_pdev *pdev, 1703 struct wlan_dcs_conn_info *conn_info) 1704 { 1705 uint32_t i; 1706 struct wlan_objmgr_vdev *vdev; 1707 uint8_t max_bw_vdev_id; 1708 qdf_freq_t max_bw_freq, target_freq; 1709 enum phy_ch_width max_bw = CH_WIDTH_20MHZ; 1710 enum phy_ch_width pref_bw; 1711 1712 if (conn_info->sap_5ghz_cnt) { 1713 max_bw = conn_info->sap_5ghz[0].bw; 1714 max_bw_vdev_id = conn_info->sap_5ghz[0].vdev_id; 1715 max_bw_freq = conn_info->sap_5ghz[0].freq; 1716 for (i = 1; i < conn_info->sap_5ghz_cnt; i++) { 1717 if (conn_info->sap_5ghz[i].bw > max_bw) { 1718 max_bw = conn_info->sap_5ghz[i].bw; 1719 max_bw_vdev_id = conn_info->sap_5ghz[i].vdev_id; 1720 max_bw_freq = conn_info->sap_5ghz[i].freq; 1721 } 1722 } 1723 } else if (conn_info->sap_6ghz_cnt) { 1724 max_bw = conn_info->sap_6ghz[0].bw; 1725 max_bw_vdev_id = conn_info->sap_6ghz[0].vdev_id; 1726 max_bw_freq = conn_info->sap_6ghz[0].freq; 1727 for (i = 1; i < conn_info->sap_6ghz_cnt; i++) { 1728 if (conn_info->sap_6ghz[i].bw > max_bw) { 1729 max_bw = conn_info->sap_6ghz[i].bw; 1730 max_bw_vdev_id = conn_info->sap_6ghz[i].vdev_id; 1731 max_bw_freq = conn_info->sap_6ghz[i].freq; 1732 } 1733 } 1734 } else { 1735 return; 1736 } 1737 1738 /* 1739 * After several AFC event update, if maximum bandwidth shrink to 1740 * 20 MHz, set prefer bandwidth to pre-defined value like 80 MHz, 1741 * so it can expand bandwidth and gain better performance. 1742 */ 1743 if (max_bw == CH_WIDTH_20MHZ) 1744 pref_bw = WLAN_DCS_AFC_PREFER_BW; 1745 else 1746 pref_bw = max_bw; 1747 1748 target_freq = wlan_dcs_afc_sel_chan( 1749 wlan_pdev_get_psoc(pdev), 1750 max_bw_vdev_id, 1751 max_bw_freq, max_bw, &pref_bw); 1752 1753 if (!target_freq) 1754 return; 1755 1756 if (WLAN_REG_IS_6GHZ_CHAN_FREQ(target_freq) && 1757 conn_info->sap_5ghz_cnt) { 1758 for (i = 0; i < conn_info->sap_5ghz_cnt; i++) { 1759 if (!wlan_dcs_afc_6ghz_capable( 1760 wlan_pdev_get_psoc(pdev), 1761 conn_info->sap_5ghz[i].vdev_id)) { 1762 dcs_debug("vdev %d has no 6 GHz capability", 1763 conn_info->sap_5ghz[i].vdev_id); 1764 return; 1765 } 1766 } 1767 } 1768 1769 if (conn_info->sap_5ghz_cnt) { 1770 for (i = 0; i < conn_info->sap_5ghz_cnt; i++) { 1771 if (target_freq == conn_info->sap_5ghz[i].freq && 1772 pref_bw == conn_info->sap_5ghz[i].bw) 1773 continue; 1774 vdev = wlan_objmgr_get_vdev_by_id_from_pdev( 1775 pdev, 1776 conn_info->sap_5ghz[i].vdev_id, 1777 WLAN_DCS_ID); 1778 if (!vdev) 1779 continue; 1780 1781 wlan_dcs_switch_chan(vdev, target_freq, pref_bw); 1782 wlan_objmgr_vdev_release_ref(vdev, WLAN_DCS_ID); 1783 } 1784 } else if (conn_info->sap_6ghz_cnt) { 1785 for (i = 0; i < conn_info->sap_6ghz_cnt; i++) { 1786 if (target_freq == conn_info->sap_6ghz[i].freq && 1787 pref_bw == conn_info->sap_6ghz[i].bw) 1788 continue; 1789 vdev = wlan_objmgr_get_vdev_by_id_from_pdev( 1790 pdev, 1791 conn_info->sap_6ghz[i].vdev_id, 1792 WLAN_DCS_ID); 1793 if (!vdev) 1794 continue; 1795 1796 wlan_dcs_switch_chan(vdev, target_freq, pref_bw); 1797 wlan_objmgr_vdev_release_ref(vdev, WLAN_DCS_ID); 1798 } 1799 } 1800 } 1801 1802 /** 1803 * wlan_dcs_afc_process() - Dynamic SAP channel switch after AFC update 1804 * @psoc: psoc handle 1805 * @pdev_id: pdev id 1806 * 1807 * Return: void 1808 */ 1809 static void 1810 wlan_dcs_afc_process(struct wlan_objmgr_psoc *psoc, uint8_t pdev_id) 1811 { 1812 struct wlan_objmgr_pdev *pdev; 1813 struct wlan_dcs_conn_info conn_info = {0}; 1814 1815 pdev = wlan_objmgr_get_pdev_by_id(psoc, pdev_id, WLAN_DCS_ID); 1816 if (!pdev) { 1817 dcs_err("Invalid pdev id %d", pdev_id); 1818 return; 1819 } 1820 1821 wlan_objmgr_pdev_iterate_obj_list(pdev, WLAN_VDEV_OP, 1822 wlan_dcs_afc_get_conn_info, 1823 &conn_info, 0, WLAN_DCS_ID); 1824 if (conn_info.exit_condition) 1825 goto pdev_release; 1826 1827 if ((conn_info.sap_5ghz_cnt && conn_info.sap_6ghz_cnt) || 1828 (!conn_info.sap_5ghz_cnt && !conn_info.sap_6ghz_cnt)) { 1829 dcs_debug("NA for %d 5 GHz SAP, %d 6 GHz SAP", 1830 conn_info.sap_5ghz_cnt, conn_info.sap_6ghz_cnt); 1831 goto pdev_release; 1832 } 1833 1834 if (conn_info.sta_cnt && 1835 !WLAN_REG_IS_24GHZ_CH_FREQ(conn_info.sta[0].freq)) 1836 wlan_dcs_afc_sap_dcs_with_sta(pdev, &conn_info); 1837 else 1838 wlan_dcs_afc_5ghz6ghz_sap_dcs(pdev, &conn_info); 1839 1840 pdev_release: 1841 wlan_objmgr_pdev_release_ref(pdev, WLAN_DCS_ID); 1842 } 1843 #else 1844 static inline void 1845 wlan_dcs_afc_process(struct wlan_objmgr_psoc *psoc, uint8_t pdev_id) {} 1846 #endif 1847 1848 QDF_STATUS 1849 wlan_dcs_process(struct wlan_objmgr_psoc *psoc, 1850 struct wlan_host_dcs_event *event) 1851 { 1852 struct dcs_pdev_priv_obj *dcs_pdev_priv; 1853 bool start_dcs_cbk_handler = false; 1854 1855 if (!psoc || !event) { 1856 dcs_err("psoc or event is NULL"); 1857 return QDF_STATUS_E_INVAL; 1858 } 1859 1860 dcs_pdev_priv = wlan_dcs_get_pdev_private_obj(psoc, 1861 event->dcs_param.pdev_id); 1862 if (!dcs_pdev_priv) { 1863 dcs_err("dcs pdev private object is null"); 1864 return QDF_STATUS_E_INVAL; 1865 } 1866 1867 if (unlikely(dcs_pdev_priv->dcs_host_params.dcs_debug 1868 >= DCS_DEBUG_VERBOSE)) 1869 dcs_debug("dcs_enable: %u, interference_type: %u, pdev_id: %u", 1870 dcs_pdev_priv->dcs_host_params.dcs_enable, 1871 event->dcs_param.interference_type, 1872 event->dcs_param.pdev_id); 1873 1874 switch (event->dcs_param.interference_type) { 1875 case WLAN_HOST_DCS_CWIM: 1876 break; 1877 case WLAN_HOST_DCS_WLANIM: 1878 if (!dcs_pdev_priv->dcs_host_params.dcs_enable) 1879 break; 1880 1881 if (dcs_pdev_priv->dcs_host_params.dcs_enable & 1882 WLAN_HOST_DCS_WLANIM) 1883 start_dcs_cbk_handler = 1884 wlan_dcs_wlan_interference_process( 1885 &event->wlan_stat, 1886 dcs_pdev_priv); 1887 if (dcs_pdev_priv->user_cb && 1888 dcs_pdev_priv->dcs_host_params.notify_user) { 1889 dcs_pdev_priv->dcs_host_params.notify_user = 0; 1890 dcs_pdev_priv->user_cb(dcs_pdev_priv->requestor_vdev_id, 1891 &dcs_pdev_priv->dcs_im_stats.user_dcs_im_stats, 1892 0); 1893 } 1894 if (start_dcs_cbk_handler) 1895 wlan_dcs_frequency_control(psoc, 1896 dcs_pdev_priv, 1897 event); 1898 break; 1899 case WLAN_HOST_DCS_AWGNIM: 1900 /* Skip frequency control for AWGNIM */ 1901 wlan_dcs_awgn_process(psoc, event->dcs_param.pdev_id, 1902 &event->awgn_info); 1903 break; 1904 case WLAN_HOST_DCS_AFC: 1905 wlan_dcs_afc_process(psoc, event->dcs_param.pdev_id); 1906 break; 1907 default: 1908 dcs_err("unidentified interference type reported"); 1909 break; 1910 } 1911 1912 return QDF_STATUS_SUCCESS; 1913 } 1914 1915 void wlan_dcs_clear(struct wlan_objmgr_psoc *psoc, uint32_t pdev_id) 1916 { 1917 struct dcs_pdev_priv_obj *dcs_pdev_priv; 1918 1919 if (!psoc) { 1920 dcs_err("psoc is null"); 1921 return; 1922 } 1923 1924 dcs_pdev_priv = wlan_dcs_get_pdev_private_obj(psoc, pdev_id); 1925 if (!dcs_pdev_priv) { 1926 dcs_err("dcs pdev private object is null"); 1927 return; 1928 } 1929 1930 qdf_timer_stop(&dcs_pdev_priv->dcs_disable_timer); 1931 qdf_mem_set(&dcs_pdev_priv->dcs_im_stats, 1932 sizeof(dcs_pdev_priv->dcs_im_stats), 0); 1933 qdf_mem_set(dcs_pdev_priv->dcs_freq_ctrl_params.timestamp, 1934 MAX_DCS_TIME_RECORD * sizeof(unsigned long), 0); 1935 dcs_pdev_priv->dcs_freq_ctrl_params.dcs_happened_count = 0; 1936 dcs_pdev_priv->dcs_freq_ctrl_params.disable_delay_process = false; 1937 wlan_dcs_set_algorithm_process(psoc, pdev_id, false); 1938 } 1939 1940 void wlan_dcs_set_algorithm_process(struct wlan_objmgr_psoc *psoc, 1941 uint32_t pdev_id, 1942 bool dcs_algorithm_process) 1943 { 1944 struct dcs_pdev_priv_obj *dcs_pdev_priv; 1945 1946 dcs_pdev_priv = wlan_dcs_get_pdev_private_obj(psoc, pdev_id); 1947 if (!dcs_pdev_priv) { 1948 dcs_err("dcs pdev private object is null"); 1949 return; 1950 } 1951 1952 if (dcs_pdev_priv->dcs_host_params.force_disable_algorithm) { 1953 dcs_debug("dcs algorithm is disabled forcely"); 1954 dcs_pdev_priv->dcs_host_params.dcs_algorithm_process = false; 1955 return; 1956 } 1957 1958 dcs_pdev_priv->dcs_host_params.dcs_algorithm_process = 1959 dcs_algorithm_process; 1960 } 1961