1 /* 2 * Copyright (c) 2020-2021, The Linux Foundation. All rights reserved. 3 * Copyright (c) 2022 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 /** 718 * wlan_dcs_switch_chan() - switch channel for vdev 719 * @vdev: vdev ptr 720 * @tgt_freq: target frequency 721 * @tgt_width: target channel width 722 * 723 * Return: QDF_STATUS 724 */ 725 static QDF_STATUS 726 wlan_dcs_switch_chan(struct wlan_objmgr_vdev *vdev, qdf_freq_t tgt_freq, 727 enum phy_ch_width tgt_width) 728 { 729 struct wlan_objmgr_psoc *psoc; 730 struct dcs_psoc_priv_obj *dcs_psoc_priv; 731 dcs_switch_chan_cb switch_chan_cb; 732 733 psoc = wlan_vdev_get_psoc(vdev); 734 if (!psoc) 735 return QDF_STATUS_E_INVAL; 736 737 dcs_psoc_priv = wlan_objmgr_psoc_get_comp_private_obj(psoc, 738 WLAN_UMAC_COMP_DCS); 739 if (!dcs_psoc_priv) 740 return QDF_STATUS_E_INVAL; 741 742 switch_chan_cb = dcs_psoc_priv->switch_chan_cb; 743 if (!switch_chan_cb) 744 return QDF_STATUS_E_NOSUPPORT; 745 746 return switch_chan_cb(vdev, tgt_freq, tgt_width); 747 } 748 749 #ifdef WLAN_POLICY_MGR_ENABLE 750 /** 751 * wlan_dcs_get_pcl_for_sap() - get preferred channel list for SAP 752 * @vdev: vdev ptr 753 * @freq_list: Pointer to PCL 754 * @freq_list_sz: Max size of PCL 755 * 756 * Return: number of channels in PCL 757 */ 758 static uint32_t wlan_dcs_get_pcl_for_sap(struct wlan_objmgr_vdev *vdev, 759 qdf_freq_t *freq_list, 760 uint32_t freq_list_sz) 761 { 762 struct wlan_objmgr_psoc *psoc; 763 struct wlan_objmgr_pdev *pdev; 764 struct policy_mgr_pcl_list *pcl; 765 qdf_freq_t freq; 766 enum channel_state state; 767 QDF_STATUS status; 768 int i, j; 769 770 psoc = wlan_vdev_get_psoc(vdev); 771 if (!psoc) 772 return 0; 773 774 pdev = wlan_vdev_get_pdev(vdev); 775 if (!pdev) 776 return 0; 777 778 pcl = qdf_mem_malloc(sizeof(*pcl)); 779 if (!pcl) 780 return 0; 781 782 status = policy_mgr_get_pcl_for_vdev_id(psoc, 783 PM_SAP_MODE, 784 pcl->pcl_list, &pcl->pcl_len, 785 pcl->weight_list, 786 QDF_ARRAY_SIZE(pcl->weight_list), 787 wlan_vdev_get_id(vdev)); 788 if (QDF_IS_STATUS_ERROR(status) || !pcl->pcl_len) { 789 qdf_mem_free(pcl); 790 return 0; 791 } 792 793 for (i = 0, j = 0; i < pcl->pcl_len && i < freq_list_sz; i++) { 794 freq = (qdf_freq_t)pcl->pcl_list[i]; 795 state = wlan_reg_get_channel_state_for_pwrmode( 796 pdev, 797 freq, 798 REG_CURRENT_PWR_MODE); 799 if (state != CHANNEL_STATE_ENABLE) 800 continue; 801 802 freq_list[j++] = freq; 803 } 804 805 qdf_mem_free(pcl); 806 return j; 807 } 808 #else 809 static uint32_t wlan_dcs_get_pcl_for_sap(struct wlan_objmgr_vdev *vdev, 810 qdf_freq_t *freq_list, 811 uint32_t freq_list_sz) 812 { 813 struct wlan_objmgr_pdev *pdev; 814 struct regulatory_channel *cur_chan_list; 815 qdf_freq_t freq; 816 enum channel_state state; 817 int i, j; 818 819 pdev = wlan_vdev_get_pdev(vdev); 820 if (!pdev) 821 return 0; 822 823 cur_chan_list = qdf_mem_malloc(NUM_CHANNELS * 824 sizeof(struct regulatory_channel)); 825 if (!cur_chan_list) 826 return 0; 827 828 if (wlan_reg_get_current_chan_list(pdev, cur_chan_list) != 829 QDF_STATUS_SUCCESS) { 830 qdf_mem_free(cur_chan_list); 831 return 0; 832 } 833 834 for (i = 0, j = 0; i < NUM_CHANNELS && i < freq_list_sz; i++) { 835 freq = cur_chan_list[i].center_freq; 836 state = wlan_reg_get_channel_state_for_pwrmode( 837 pdev, 838 freq, 839 REG_CURRENT_PWR_MODE); 840 if (state != CHANNEL_STATE_ENABLE) 841 continue; 842 843 freq_list[j++] = freq; 844 } 845 846 qdf_mem_free(cur_chan_list); 847 return j; 848 } 849 #endif 850 851 /** 852 * wlan_dcs_awgn_get_intf_for_seg() - get interference for specified segment 853 * @awgn_info: awgn info pointer 854 * @segment: segment index in channel band 855 * 856 * This function extracts the information from awgn event and check interference 857 * within the specified segment. 858 * 859 * Return: true if interference is found within the segment, false otherwise. 860 */ 861 static bool 862 wlan_dcs_awgn_get_intf_for_seg(struct wlan_host_dcs_awgn_info *awgn_info, 863 uint32_t segment) 864 { 865 uint32_t seg_mask; 866 867 switch (segment) { 868 case WLAN_DCS_SEG_PRI20: 869 seg_mask = WLAN_DCS_SEG_PRI20_MASK; 870 break; 871 case WLAN_DCS_SEG_SEC20: 872 seg_mask = WLAN_DCS_SEG_SEC20_MASK; 873 break; 874 case WLAN_DCS_SEG_SEC40: 875 seg_mask = WLAN_DCS_SEG_SEC40_MASK; 876 break; 877 case WLAN_DCS_SEG_SEC80: 878 seg_mask = WLAN_DCS_SEG_SEC80_MASK; 879 break; 880 case WLAN_DCS_SEG_SEC160: 881 seg_mask = WLAN_DCS_SEG_SEC160_MASK; 882 break; 883 default: 884 seg_mask = 0xFFFFFFFF; 885 break; 886 } 887 888 return (awgn_info->chan_bw_intf_bitmap & seg_mask); 889 } 890 891 /** 892 * wlan_dcs_get_max_seg_idx() - get max segment index for channel width 893 * @width: channel width 894 * 895 * Return: max segment index(enum wlan_dcs_chan_seg) for the channel width. 896 */ 897 static enum wlan_dcs_chan_seg wlan_dcs_get_max_seg_idx(enum phy_ch_width width) 898 { 899 switch (width) { 900 case CH_WIDTH_160MHZ: 901 case CH_WIDTH_80P80MHZ: 902 return WLAN_DCS_SEG_SEC80; 903 case CH_WIDTH_80MHZ: 904 return WLAN_DCS_SEG_SEC40; 905 case CH_WIDTH_40MHZ: 906 return WLAN_DCS_SEG_SEC20; 907 case CH_WIDTH_20MHZ: 908 return WLAN_DCS_SEG_PRI20; 909 default: 910 dcs_err("Invalid ch width %d", width); 911 return WLAN_DCS_SEG_INVALID; 912 } 913 } 914 915 /** 916 * wlan_dcs_get_chan_width_for_seg() - get channel width for specified segment 917 * @seg_idx: segment index 918 * 919 * Return: channel width for segment index 920 */ 921 static enum phy_ch_width 922 wlan_dcs_get_chan_width_for_seg(enum wlan_dcs_chan_seg seg_idx) 923 { 924 switch (seg_idx) { 925 case WLAN_DCS_SEG_SEC80: 926 return CH_WIDTH_160MHZ; 927 case WLAN_DCS_SEG_SEC40: 928 return CH_WIDTH_80MHZ; 929 case WLAN_DCS_SEG_SEC20: 930 return CH_WIDTH_40MHZ; 931 case WLAN_DCS_SEG_PRI20: 932 return CH_WIDTH_20MHZ; 933 default: 934 dcs_err("Invalid seg idx %d", seg_idx); 935 return CH_WIDTH_INVALID; 936 } 937 } 938 939 /** 940 * wlan_dcs_get_max_no_intf_bw() - get max no interference band width 941 * @awgn_info: pointer to awgn info 942 * @width: pointer to channel width 943 * 944 * This function tries to get max no interference band width according to 945 * awgn event. 946 * 947 * Return: true if valid no interference band width is found, false otherwise. 948 */ 949 static bool 950 wlan_dcs_get_max_no_intf_bw(struct wlan_host_dcs_awgn_info *awgn_info, 951 enum phy_ch_width *width) 952 { 953 enum wlan_dcs_chan_seg seg_idx, max_seg_idx; 954 955 max_seg_idx = wlan_dcs_get_max_seg_idx(awgn_info->channel_width); 956 if (max_seg_idx == WLAN_DCS_SEG_INVALID) 957 return false; 958 959 seg_idx = WLAN_DCS_SEG_PRI20; 960 while (seg_idx <= max_seg_idx) { 961 if (wlan_dcs_awgn_get_intf_for_seg(awgn_info, seg_idx)) { 962 dcs_debug("Intf found for seg idx %d", seg_idx); 963 break; 964 } 965 seg_idx++; 966 } 967 968 /* scroll back to the last no-intf idx */ 969 seg_idx--; 970 971 if (seg_idx == WLAN_DCS_SEG_INVALID) { 972 /* If pri20 contains interference, do full channel change */ 973 dcs_debug("Primary 20MHz Channel interference detected"); 974 return false; 975 } 976 977 *width = wlan_dcs_get_chan_width_for_seg(seg_idx); 978 if (*width == CH_WIDTH_160MHZ && 979 awgn_info->channel_width == CH_WIDTH_80P80MHZ) 980 *width = CH_WIDTH_80P80MHZ; 981 982 dcs_debug("Found the max no intf width %d", *width); 983 return (*width != CH_WIDTH_INVALID); 984 } 985 986 /** 987 * wlan_dcs_get_available_chan_for_bw() - get available channel for specified 988 * band width 989 * @pdev: pdev ptr 990 * @awgn_info: pointer to awgn info 991 * @bw: channel width 992 * @freq_list: List of preferred channels 993 * @freq_num: Number of channels in the PCL 994 * @random: request for random channel 995 * 996 * Return: the selected channel frequency, 0 if no available chan is found. 997 */ 998 static qdf_freq_t 999 wlan_dcs_get_available_chan_for_bw(struct wlan_objmgr_pdev *pdev, 1000 struct wlan_host_dcs_awgn_info *awgn_info, 1001 enum phy_ch_width bw, qdf_freq_t *freq_list, 1002 uint32_t freq_num, bool random) 1003 { 1004 int i, j = 0; 1005 uint32_t random_chan_idx; 1006 qdf_freq_t freq, selected_freq = 0; 1007 const struct bonded_channel_freq *bonded_chan_ptr = NULL; 1008 enum channel_state state; 1009 uint16_t chan_cfreq; 1010 bool is_safe = true; 1011 1012 if (!freq_list || !freq_num) 1013 return selected_freq; 1014 1015 for (i = 0; i < freq_num; i++) { 1016 if (j && !random) { 1017 selected_freq = freq_list[0]; 1018 dcs_debug("get the first available freq %u for bw %u", 1019 selected_freq, bw); 1020 break; 1021 } 1022 1023 freq = freq_list[i]; 1024 if (!WLAN_REG_IS_SAME_BAND_FREQS(freq, awgn_info->center_freq)) 1025 continue; 1026 1027 /** 1028 * DFS channel may need CAC during restart, which costs time 1029 * and may cause failure. 1030 */ 1031 if (wlan_reg_is_dfs_for_freq(pdev, freq)) { 1032 dcs_debug("skip dfs freq %u", freq); 1033 continue; 1034 } 1035 1036 if (bonded_chan_ptr && 1037 freq >= bonded_chan_ptr->start_freq && 1038 freq <= bonded_chan_ptr->end_freq) { 1039 if (is_safe) { 1040 dcs_debug("add freq directly [%d] = %u", 1041 j, freq); 1042 freq_list[j++] = freq; 1043 } 1044 continue; 1045 } 1046 1047 state = wlan_reg_get_5g_bonded_channel_and_state_for_pwrmode( 1048 pdev, freq, bw, &bonded_chan_ptr, 1049 REG_CURRENT_PWR_MODE, 1050 NO_SCHANS_PUNC); 1051 if (state != CHANNEL_STATE_ENABLE) 1052 continue; 1053 1054 /* no bonding channel for 20MHz */ 1055 if (bw == CH_WIDTH_20MHZ) { 1056 if (WLAN_DCS_IS_FREQ_IN_WIDTH(awgn_info->center_freq, 1057 awgn_info->center_freq0, 1058 awgn_info->center_freq1, 1059 awgn_info->channel_width, 1060 freq)) 1061 continue; 1062 1063 dcs_debug("add freq[%d] = %u", j, freq); 1064 freq_list[j++] = freq; 1065 continue; 1066 } 1067 1068 is_safe = true; 1069 chan_cfreq = bonded_chan_ptr->start_freq; 1070 while (chan_cfreq <= bonded_chan_ptr->end_freq) { 1071 if (WLAN_DCS_IS_FREQ_IN_WIDTH(awgn_info->center_freq, 1072 awgn_info->center_freq0, 1073 awgn_info->center_freq1, 1074 awgn_info->channel_width, 1075 chan_cfreq)) { 1076 is_safe = false; 1077 break; 1078 } 1079 chan_cfreq = chan_cfreq + 20; 1080 } 1081 if (is_safe) { 1082 dcs_debug("add freq[%d] = %u", j, freq); 1083 freq_list[j++] = freq; 1084 } 1085 } 1086 1087 if (j && random) { 1088 qdf_get_random_bytes(&random_chan_idx, sizeof(random_chan_idx)); 1089 random_chan_idx = random_chan_idx % j; 1090 selected_freq = freq_list[random_chan_idx]; 1091 dcs_debug("get freq[%d] = %u for bw %u", 1092 random_chan_idx, selected_freq, bw); 1093 } 1094 1095 return selected_freq; 1096 } 1097 1098 /** 1099 * wlan_dcs_sap_get_available_chan() - get available channel for sap 1100 * @vdev: vdev ptr 1101 * @awgn_info: pointer to awgn info 1102 * @tgt_freq: frequency of the selected channel 1103 * @tgt_width: band width of the selected channel 1104 * @random: request for random channel 1105 * 1106 * This function tries to get no-interference chan with max possible bandwidth 1107 * from pcl for sap according to awgn info. 1108 * 1109 * Return: true if available channel is found, false otherwise. 1110 */ 1111 static bool 1112 wlan_dcs_sap_select_chan(struct wlan_objmgr_vdev *vdev, 1113 struct wlan_host_dcs_awgn_info *awgn_info, 1114 qdf_freq_t *tgt_freq, enum phy_ch_width *tgt_width, 1115 bool random) 1116 { 1117 int32_t tmp_width; 1118 qdf_freq_t tmp_freq = 0; 1119 struct wlan_objmgr_pdev *pdev; 1120 qdf_freq_t *freq_list; 1121 uint32_t freq_num; 1122 1123 freq_list = qdf_mem_malloc(sizeof(*freq_list) * NUM_CHANNELS); 1124 if (!freq_list) 1125 return false; 1126 1127 freq_num = wlan_dcs_get_pcl_for_sap(vdev, freq_list, NUM_CHANNELS); 1128 if (!freq_num) { 1129 qdf_mem_free(freq_list); 1130 return false; 1131 } 1132 1133 tmp_width = awgn_info->channel_width; 1134 pdev = wlan_vdev_get_pdev(vdev); 1135 if (!pdev) { 1136 qdf_mem_free(freq_list); 1137 return false; 1138 } 1139 1140 while (tmp_width >= CH_WIDTH_20MHZ) { 1141 tmp_freq = wlan_dcs_get_available_chan_for_bw(pdev, awgn_info, 1142 tmp_width, 1143 freq_list, 1144 freq_num, 1145 random); 1146 if (tmp_freq) 1147 break; 1148 tmp_width--; 1149 } 1150 1151 if (tmp_freq) { 1152 *tgt_width = tmp_width; 1153 *tgt_freq = tmp_freq; 1154 dcs_debug("new_width: %d new_freq %u", tmp_width, tmp_freq); 1155 1156 qdf_mem_free(freq_list); 1157 return true; 1158 } 1159 1160 qdf_mem_free(freq_list); 1161 return false; 1162 } 1163 1164 /** 1165 * wlan_dcs_is_awgnim_valid() - validate awgn info 1166 * @awgn_info: pointer to awgn info 1167 * 1168 * Return: true if valid, false otherwise. 1169 */ 1170 static inline bool 1171 wlan_dcs_is_awgnim_valid(struct wlan_host_dcs_awgn_info *awgn_info) 1172 { 1173 return (awgn_info && 1174 awgn_info->center_freq && awgn_info->chan_bw_intf_bitmap && 1175 awgn_info->channel_width != CH_WIDTH_INVALID && 1176 WLAN_REG_IS_6GHZ_CHAN_FREQ(awgn_info->center_freq)); 1177 } 1178 1179 /** 1180 * wlan_dcs_vdev_get_op_chan_info() - get operating channel info for vdev 1181 * @vdev: pointer to vdev object 1182 * @cfreq: Center frequency of primary channel 1183 * @cfreq0: Center frequency of segment 1 1184 * @cfreq1: Center frequency of segment 2 1185 * @ch_width: Channel width, enum phy_ch_width 1186 * 1187 * Return: QDF_STATUS 1188 */ 1189 static QDF_STATUS 1190 wlan_dcs_vdev_get_op_chan_info(struct wlan_objmgr_vdev *vdev, 1191 qdf_freq_t *cfreq, qdf_freq_t *cfreq0, 1192 qdf_freq_t *cfreq1, enum phy_ch_width *ch_width) 1193 { 1194 struct wlan_channel *chan; 1195 1196 if (!vdev) 1197 return QDF_STATUS_E_INVAL; 1198 1199 *cfreq = 0; 1200 *cfreq0 = 0; 1201 *cfreq1 = 0; 1202 *ch_width = 0; 1203 1204 if (wlan_vdev_mlme_is_active(vdev) != QDF_STATUS_SUCCESS) 1205 return QDF_STATUS_E_INVAL; 1206 1207 chan = wlan_vdev_get_active_channel(vdev); 1208 if (!chan) 1209 return QDF_STATUS_E_INVAL; 1210 1211 *cfreq = chan->ch_freq; 1212 *cfreq0 = chan->ch_cfreq1; 1213 *cfreq1 = chan->ch_cfreq2; 1214 *ch_width = chan->ch_width; 1215 1216 return QDF_STATUS_SUCCESS; 1217 } 1218 1219 /** 1220 * wlan_dcs_process_awgn_sta() - process AWGN event for STA 1221 * @pdev: pointer to pdev object 1222 * @object: vdev object 1223 * @arg: Arguments to the handler 1224 * 1225 * Return: void 1226 */ 1227 static void wlan_dcs_process_awgn_sta(struct wlan_objmgr_pdev *pdev, 1228 void *object, void *arg) 1229 { 1230 struct wlan_objmgr_vdev *vdev = object; 1231 struct wlan_host_dcs_awgn_info *awgn_info = arg; 1232 enum phy_ch_width ch_width; 1233 enum phy_ch_width tgt_width = CH_WIDTH_INVALID; 1234 qdf_freq_t op_freq, cfreq0, cfreq1; 1235 qdf_freq_t tgt_freq = 0; 1236 QDF_STATUS status; 1237 uint8_t vdev_id; 1238 bool found; 1239 1240 if (!vdev || !pdev) 1241 return; 1242 1243 if (wlan_vdev_mlme_get_opmode(vdev) != QDF_STA_MODE) 1244 return; 1245 1246 vdev_id = wlan_vdev_get_id(vdev); 1247 status = wlan_dcs_vdev_get_op_chan_info(vdev, &op_freq, &cfreq0, 1248 &cfreq1, &ch_width); 1249 if (QDF_IS_STATUS_ERROR(status)) 1250 return; 1251 1252 if (awgn_info->center_freq != op_freq) { 1253 dcs_debug("STA-%d: freq not match", vdev_id); 1254 return; 1255 } 1256 1257 found = wlan_dcs_get_max_no_intf_bw(awgn_info, &tgt_width); 1258 if (found) { 1259 if (ch_width <= tgt_width) { 1260 dcs_debug("STA-%d: freq and bw are unchanged", vdev_id); 1261 return; 1262 } 1263 1264 tgt_freq = op_freq; 1265 } 1266 1267 /* If no width is found, means to disconnect */ 1268 dcs_debug("STA-%d: target freq %u width %u", 1269 vdev_id, tgt_freq, tgt_width); 1270 wlan_dcs_switch_chan(vdev, tgt_freq, tgt_width); 1271 } 1272 1273 /** 1274 * wlan_dcs_process_awgn_sap() - process AWGN event for SAP 1275 * @pdev: pointer to pdev object 1276 * @object: vdev object 1277 * @arg: Arguments to the handler 1278 * 1279 * Return: void 1280 */ 1281 static void wlan_dcs_process_awgn_sap(struct wlan_objmgr_pdev *pdev, 1282 void *object, void *arg) 1283 { 1284 struct wlan_objmgr_vdev *vdev = object; 1285 struct wlan_host_dcs_awgn_info *awgn_info = arg; 1286 enum phy_ch_width ch_width; 1287 enum phy_ch_width tgt_width = CH_WIDTH_INVALID; 1288 qdf_freq_t op_freq, cfreq0, cfreq1; 1289 qdf_freq_t tgt_freq = 0; 1290 QDF_STATUS status; 1291 uint8_t vdev_id; 1292 bool found; 1293 1294 if (!vdev || !pdev) 1295 return; 1296 1297 if (wlan_vdev_mlme_get_opmode(vdev) != QDF_SAP_MODE) 1298 return; 1299 1300 vdev_id = wlan_vdev_get_id(vdev); 1301 status = wlan_dcs_vdev_get_op_chan_info(vdev, &op_freq, &cfreq0, &cfreq1, &ch_width); 1302 if (QDF_IS_STATUS_ERROR(status)) 1303 return; 1304 1305 if (awgn_info->center_freq != op_freq) { 1306 dcs_debug("SAP-%d: freq not match rpt:%u - op:%u", 1307 vdev_id, awgn_info->center_freq, op_freq); 1308 return; 1309 } 1310 1311 found = wlan_dcs_get_max_no_intf_bw(awgn_info, &tgt_width); 1312 if (found) { 1313 if (ch_width <= tgt_width) { 1314 dcs_debug("SAP-%d: both freq and bw are unchanged", 1315 vdev_id); 1316 return; 1317 } 1318 1319 tgt_freq = op_freq; 1320 } else { 1321 wlan_dcs_sap_select_chan(vdev, awgn_info, &tgt_freq, 1322 &tgt_width, true); 1323 } 1324 1325 /* If no chan is selected, means to stop sap */ 1326 dcs_debug("SAP-%d: target freq %u width %u", 1327 vdev_id, tgt_freq, tgt_width); 1328 wlan_dcs_switch_chan(vdev, tgt_freq, tgt_width); 1329 } 1330 1331 /** 1332 * wlan_dcs_awgnim_process() - process awgn IM 1333 * @psoc: psoc ptr 1334 * @pdev_id: pdev id 1335 * @awgn_info: pointer to awgn info 1336 * 1337 * This function triggers channel change for all STAs and SAPs, according 1338 * to AWGN info. 1339 * 1340 * Return: None. 1341 */ 1342 static void 1343 wlan_dcs_awgn_process(struct wlan_objmgr_psoc *psoc, uint8_t pdev_id, 1344 struct wlan_host_dcs_awgn_info *awgn_info) 1345 { 1346 struct wlan_objmgr_pdev *pdev; 1347 1348 if (!wlan_dcs_is_awgnim_valid(awgn_info)) { 1349 dcs_err("Invalid awgnim event"); 1350 return; 1351 } 1352 1353 pdev = wlan_objmgr_get_pdev_by_id(psoc, pdev_id, WLAN_DCS_ID); 1354 if (!pdev) { 1355 dcs_err("Invalid pdev id %d", pdev_id); 1356 return; 1357 } 1358 1359 dcs_debug("pdev id %u width %u freq %u freq0 %u fre1 %u bitmap 0x%x", 1360 pdev_id, awgn_info->channel_width, awgn_info->center_freq, 1361 awgn_info->center_freq0, awgn_info->center_freq1, 1362 awgn_info->chan_bw_intf_bitmap); 1363 1364 wlan_objmgr_pdev_iterate_obj_list(pdev, WLAN_VDEV_OP, 1365 wlan_dcs_process_awgn_sta, 1366 awgn_info, 0, WLAN_DCS_ID); 1367 1368 wlan_objmgr_pdev_iterate_obj_list(pdev, WLAN_VDEV_OP, 1369 wlan_dcs_process_awgn_sap, 1370 awgn_info, 0, WLAN_DCS_ID); 1371 1372 wlan_objmgr_pdev_release_ref(pdev, WLAN_DCS_ID); 1373 } 1374 1375 #ifdef CONFIG_AFC_SUPPORT 1376 /** 1377 * wlan_dcs_afc_sel_chan() - Select SAP new channel/bandwidth when AFC updated 1378 * @psoc: pointer to soc 1379 * @vdev_id: vdev id 1380 * @cur_freq: current channel frequency 1381 * @cur_bw: current channel bandwidth 1382 * @pref_bw: pointer to bandwidth of prefer to switch to when input, and target 1383 * bandwidth decided to switch to 1384 * 1385 * Return: target channel frequency to switch to 1386 */ 1387 static qdf_freq_t wlan_dcs_afc_sel_chan(struct wlan_objmgr_psoc *psoc, 1388 uint32_t vdev_id, 1389 qdf_freq_t cur_freq, 1390 enum phy_ch_width cur_bw, 1391 enum phy_ch_width *pref_bw) 1392 { 1393 struct dcs_psoc_priv_obj *dcs_psoc_priv; 1394 dcs_afc_select_chan_cb afc_sel_chan_cb; 1395 1396 if (!psoc) 1397 return 0; 1398 1399 dcs_psoc_priv = wlan_objmgr_psoc_get_comp_private_obj( 1400 psoc, 1401 WLAN_UMAC_COMP_DCS); 1402 if (!dcs_psoc_priv) 1403 return 0; 1404 1405 afc_sel_chan_cb = dcs_psoc_priv->afc_sel_chan_cbk.cbk; 1406 if (!afc_sel_chan_cb) 1407 return 0; 1408 1409 return afc_sel_chan_cb(dcs_psoc_priv->afc_sel_chan_cbk.arg, 1410 vdev_id, cur_freq, cur_bw, pref_bw); 1411 } 1412 1413 /** 1414 * wlan_dcs_afc_get_conn_info() - Iterate function to get connection channel 1415 * information of every vdev 1416 * @pdev: pointer to pdev 1417 * @object: pointer to iteration object 1418 * @arg: pointer to iteration argument 1419 * 1420 * Return: void 1421 */ 1422 static void 1423 wlan_dcs_afc_get_conn_info(struct wlan_objmgr_pdev *pdev, 1424 void *object, void *arg) 1425 { 1426 struct wlan_objmgr_vdev *vdev = object; 1427 struct wlan_dcs_conn_info *conn_info = arg; 1428 enum QDF_OPMODE op_mode; 1429 struct wlan_channel *chan; 1430 uint8_t vdev_id; 1431 1432 if (!vdev || !pdev || !conn_info) 1433 return; 1434 1435 if (conn_info->exit_condition) 1436 return; 1437 1438 if (wlan_vdev_mlme_is_active(vdev) != QDF_STATUS_SUCCESS) 1439 return; 1440 1441 vdev_id = wlan_vdev_get_id(vdev); 1442 op_mode = wlan_vdev_mlme_get_opmode(vdev); 1443 chan = wlan_vdev_get_active_channel(vdev); 1444 if (!chan) 1445 return; 1446 1447 switch (op_mode) { 1448 case QDF_STA_MODE: 1449 if (conn_info->sta_cnt >= WLAN_DCS_MAX_STA_NUM) { 1450 dcs_debug("too many STAs"); 1451 conn_info->exit_condition = true; 1452 break; 1453 } 1454 conn_info->sta[conn_info->sta_cnt].freq = chan->ch_freq; 1455 conn_info->sta[conn_info->sta_cnt].bw = chan->ch_width; 1456 conn_info->sta[conn_info->sta_cnt].vdev_id = vdev_id; 1457 conn_info->sta_cnt++; 1458 break; 1459 case QDF_SAP_MODE: 1460 if (WLAN_REG_IS_5GHZ_CH_FREQ(chan->ch_freq)) { 1461 if (conn_info->sap_5ghz_cnt >= WLAN_DCS_MAX_SAP_NUM) { 1462 dcs_debug("too many 5 GHz SAPs"); 1463 conn_info->exit_condition = true; 1464 } 1465 conn_info->sap_5ghz[conn_info->sap_5ghz_cnt].freq = 1466 chan->ch_freq; 1467 conn_info->sap_5ghz[conn_info->sap_5ghz_cnt].bw = 1468 chan->ch_width; 1469 conn_info->sap_5ghz[conn_info->sap_5ghz_cnt].vdev_id = 1470 vdev_id; 1471 conn_info->sap_5ghz_cnt++; 1472 } else if (WLAN_REG_IS_6GHZ_CHAN_FREQ(chan->ch_freq)) { 1473 if (conn_info->sap_6ghz_cnt >= WLAN_DCS_MAX_SAP_NUM) { 1474 dcs_debug("too many 6 GHz SAPs"); 1475 conn_info->exit_condition = true; 1476 } 1477 conn_info->sap_6ghz[conn_info->sap_6ghz_cnt].freq = 1478 chan->ch_freq; 1479 conn_info->sap_6ghz[conn_info->sap_6ghz_cnt].bw = 1480 chan->ch_width; 1481 conn_info->sap_6ghz[conn_info->sap_6ghz_cnt].vdev_id = 1482 vdev_id; 1483 conn_info->sap_6ghz_cnt++; 1484 } 1485 break; 1486 default: 1487 dcs_debug("not support op mode %d", op_mode); 1488 conn_info->exit_condition = true; 1489 break; 1490 } 1491 } 1492 1493 /** 1494 * wlan_dcs_afc_reduce_bw() - Get target bandwidth with fixed channel frequency 1495 * @pdev: pointer to pdev 1496 * @freq: channel frequency which is fixed because SCC with STA 1497 * @input_bw: SAP current channel bandwidth 1498 * 1499 * This function check every sub 20 MHz channel state which update by AFC, and 1500 * reduce channel bandwidth if sub channel is disable. 1501 * 1502 * Return: Reduced channel bandwidth 1503 */ 1504 static enum phy_ch_width wlan_dcs_afc_reduce_bw(struct wlan_objmgr_pdev *pdev, 1505 qdf_freq_t freq, 1506 enum phy_ch_width input_bw) 1507 { 1508 const struct bonded_channel_freq *bonded_chan_ptr = NULL; 1509 enum channel_state state; 1510 qdf_freq_t start_freq; 1511 bool find; 1512 1513 if (input_bw <= CH_WIDTH_20MHZ) 1514 return input_bw; 1515 1516 while (input_bw > CH_WIDTH_20MHZ) { 1517 state = wlan_reg_get_5g_bonded_channel_and_state_for_freq( 1518 pdev, freq, input_bw, &bonded_chan_ptr); 1519 if (state != CHANNEL_STATE_ENABLE) { 1520 input_bw = wlan_reg_get_next_lower_bandwidth(input_bw); 1521 continue; 1522 } 1523 find = false; 1524 start_freq = bonded_chan_ptr->start_freq; 1525 while (start_freq <= bonded_chan_ptr->end_freq) { 1526 if (wlan_reg_is_disable_in_secondary_list_for_freq( 1527 pdev, start_freq)) { 1528 find = true; 1529 break; 1530 } 1531 start_freq += 20; 1532 } 1533 if (find) 1534 input_bw = wlan_reg_get_next_lower_bandwidth(input_bw); 1535 else 1536 return input_bw; 1537 } 1538 return input_bw; 1539 } 1540 1541 /** 1542 * wlan_sap_update_tpc_on_channel() - Update vdev channel TPC parameters and 1543 * send TPC command 1544 * @pdev: pointer to pdev 1545 * @vdev_id: vdev id 1546 * @freq: SAP 6 GHz channel frequency 1547 * @bw: SAP 6 GHz channel bandwidth 1548 * 1549 * Return: void 1550 */ 1551 static void 1552 wlan_sap_update_tpc_on_channel(struct wlan_objmgr_pdev *pdev, uint8_t vdev_id, 1553 qdf_freq_t freq, enum phy_ch_width bw) 1554 { 1555 struct wlan_objmgr_psoc *psoc = wlan_pdev_get_psoc(pdev); 1556 struct wlan_lmac_if_reg_tx_ops *tx_ops; 1557 struct vdev_mlme_obj *mlme_obj; 1558 struct wlan_objmgr_vdev *vdev; 1559 struct reg_tpc_power_info *tpc; 1560 bool is_psd; 1561 uint32_t i; 1562 uint16_t tx_power; 1563 int16_t psd_eirp; 1564 enum reg_6g_ap_type power_type; 1565 1566 if (!wlan_reg_is_ext_tpc_supported(psoc)) 1567 return; 1568 1569 if (wlan_reg_decide_6ghz_power_within_bw_for_freq( 1570 pdev, freq, bw, &is_psd, &tx_power, &psd_eirp, &power_type) != 1571 QDF_STATUS_SUCCESS) 1572 return; 1573 1574 vdev = wlan_objmgr_get_vdev_by_id_from_psoc(psoc, vdev_id, WLAN_DCS_ID); 1575 if (!vdev) 1576 return; 1577 1578 tx_ops = wlan_reg_get_tx_ops(psoc); 1579 1580 mlme_obj = wlan_vdev_mlme_get_cmpt_obj(vdev); 1581 if (!mlme_obj) { 1582 dcs_err("vdev mlme obj is NULL"); 1583 goto release_vdev; 1584 } 1585 1586 tpc = &mlme_obj->reg_tpc_obj; 1587 if (tpc->is_psd_power != is_psd) { 1588 dcs_debug("psd flag changed"); 1589 goto release_vdev; 1590 } 1591 tpc->eirp_power = tx_power; 1592 tpc->power_type_6g = power_type; 1593 for (i = 0; i < tpc->num_pwr_levels; i++) { 1594 if (is_psd) 1595 tpc->chan_power_info[i].tx_power = (uint8_t)psd_eirp; 1596 else 1597 tpc->chan_power_info[i].tx_power = (uint8_t)tx_power; 1598 } 1599 1600 dcs_debug("6 GHz pwr type %d, is psd %d, pwr %d, psd %d, num pwr %d", 1601 power_type, is_psd, tx_power, psd_eirp, tpc->num_pwr_levels); 1602 1603 if (tx_ops->set_tpc_power) 1604 tx_ops->set_tpc_power(psoc, vdev_id, tpc); 1605 1606 release_vdev: 1607 wlan_objmgr_vdev_release_ref(vdev, WLAN_DCS_ID); 1608 } 1609 1610 /** 1611 * wlan_dcs_afc_sap_dcs_with_sta() - SAP channel switch when coexist with STA 1612 * @pdev: pointer to pdev handle 1613 * @conn_info: pointer to connection context of AFC DCS 1614 * 1615 * This function update TPC or restart SAP if doing SCC on 6 GHz with STA 1616 * 1617 * Return: void 1618 */ 1619 static void 1620 wlan_dcs_afc_sap_dcs_with_sta(struct wlan_objmgr_pdev *pdev, 1621 struct wlan_dcs_conn_info *conn_info) 1622 { 1623 uint32_t i; 1624 qdf_freq_t target_freq = conn_info->sta[0].freq; 1625 enum phy_ch_width target_bw = CH_WIDTH_20MHZ; 1626 struct wlan_objmgr_vdev *vdev; 1627 1628 if (!WLAN_REG_IS_6GHZ_CHAN_FREQ(conn_info->sta[0].freq)) 1629 return; 1630 1631 for (i = 0; i < conn_info->sap_6ghz_cnt; i++) { 1632 if (conn_info->sap_6ghz[i].freq == 1633 conn_info->sta[0].freq) { 1634 /* 1635 * sta operate under control of ap, if stop sap, 1636 * cannot start by itself, so just update tpc as sta, 1637 * if tx power is minimum of SCC tpc commands, no 1638 * need to update sap tpc command. 1639 * assume sta will move to safe channel by ap and 1640 * sap can move channel accordingly. 1641 */ 1642 if (wlan_reg_is_disable_in_secondary_list_for_freq( 1643 pdev, conn_info->sta[0].freq)) 1644 continue; 1645 1646 target_bw = wlan_dcs_afc_reduce_bw( 1647 pdev, 1648 conn_info->sap_6ghz[i].freq, 1649 conn_info->sap_6ghz[i].bw); 1650 1651 if (target_bw == conn_info->sap_6ghz[i].bw) { 1652 wlan_sap_update_tpc_on_channel( 1653 pdev, 1654 conn_info->sap_6ghz[i].vdev_id, 1655 conn_info->sap_6ghz[i].freq, 1656 target_bw); 1657 continue; 1658 } 1659 1660 vdev = wlan_objmgr_get_vdev_by_id_from_pdev( 1661 pdev, 1662 conn_info->sap_6ghz[i].vdev_id, 1663 WLAN_DCS_ID); 1664 if (!vdev) 1665 continue; 1666 1667 /* tpc update once csa complete */ 1668 wlan_dcs_switch_chan(vdev, target_freq, target_bw); 1669 wlan_objmgr_vdev_release_ref(vdev, WLAN_DCS_ID); 1670 } 1671 } 1672 } 1673 1674 #ifdef WLAN_POLICY_MGR_ENABLE 1675 /** 1676 * wlan_dcs_afc_6ghz_capable() - API to check SAP configure is able to operate 1677 * on 6 GHz 1678 * @psoc: pointer to SOC 1679 * @vdev_id: vdev id 1680 * 1681 * Return: Return true if SAP is able to operate on 6 GHz 1682 */ 1683 static inline bool 1684 wlan_dcs_afc_6ghz_capable(struct wlan_objmgr_psoc *psoc, uint8_t vdev_id) 1685 { 1686 return policy_mgr_get_ap_6ghz_capable(psoc, vdev_id, NULL); 1687 } 1688 #else 1689 static inline bool 1690 wlan_dcs_afc_6ghz_capable(struct wlan_objmgr_psoc *psoc, uint8_t vdev_id) 1691 { 1692 return false; 1693 } 1694 #endif 1695 1696 /** 1697 * wlan_dcs_afc_5ghz6ghz_sap_dcs() - SAP on 5 GHz or 6 GHz channel to do 1698 * channel switch. 1699 * @pdev: pointer to pdev handle 1700 * @conn_info: pointer to connection context for AFC DCS 1701 * 1702 * This function is trigger by AFC event and 6 GHz channels' state has been 1703 * updated, restart SAP to SP channel if possible, gain better performance. 1704 * 1705 * Return: void 1706 */ 1707 static void 1708 wlan_dcs_afc_5ghz6ghz_sap_dcs(struct wlan_objmgr_pdev *pdev, 1709 struct wlan_dcs_conn_info *conn_info) 1710 { 1711 uint32_t i; 1712 struct wlan_objmgr_vdev *vdev; 1713 uint8_t max_bw_vdev_id; 1714 qdf_freq_t max_bw_freq, target_freq; 1715 enum phy_ch_width max_bw = CH_WIDTH_20MHZ; 1716 enum phy_ch_width pref_bw; 1717 1718 if (conn_info->sap_5ghz_cnt) { 1719 max_bw = conn_info->sap_5ghz[0].bw; 1720 max_bw_vdev_id = conn_info->sap_5ghz[0].vdev_id; 1721 max_bw_freq = conn_info->sap_5ghz[0].freq; 1722 for (i = 1; i < conn_info->sap_5ghz_cnt; i++) { 1723 if (conn_info->sap_5ghz[i].bw > max_bw) { 1724 max_bw = conn_info->sap_5ghz[i].bw; 1725 max_bw_vdev_id = conn_info->sap_5ghz[i].vdev_id; 1726 max_bw_freq = conn_info->sap_5ghz[i].freq; 1727 } 1728 } 1729 } else if (conn_info->sap_6ghz_cnt) { 1730 max_bw = conn_info->sap_6ghz[0].bw; 1731 max_bw_vdev_id = conn_info->sap_6ghz[0].vdev_id; 1732 max_bw_freq = conn_info->sap_6ghz[0].freq; 1733 for (i = 1; i < conn_info->sap_6ghz_cnt; i++) { 1734 if (conn_info->sap_6ghz[i].bw > max_bw) { 1735 max_bw = conn_info->sap_6ghz[i].bw; 1736 max_bw_vdev_id = conn_info->sap_6ghz[i].vdev_id; 1737 max_bw_freq = conn_info->sap_6ghz[i].freq; 1738 } 1739 } 1740 } else { 1741 return; 1742 } 1743 1744 /* 1745 * After several AFC event update, if maximum bandwidth shrink to 1746 * 20 MHz, set prefer bandwidth to pre-defined value like 80 MHz, 1747 * so it can expand bandwidth and gain better performance. 1748 */ 1749 if (max_bw == CH_WIDTH_20MHZ) 1750 pref_bw = WLAN_DCS_AFC_PREFER_BW; 1751 else 1752 pref_bw = max_bw; 1753 1754 target_freq = wlan_dcs_afc_sel_chan( 1755 wlan_pdev_get_psoc(pdev), 1756 max_bw_vdev_id, 1757 max_bw_freq, max_bw, &pref_bw); 1758 1759 if (!target_freq) 1760 return; 1761 1762 if (WLAN_REG_IS_6GHZ_CHAN_FREQ(target_freq) && 1763 conn_info->sap_5ghz_cnt) { 1764 for (i = 0; i < conn_info->sap_5ghz_cnt; i++) { 1765 if (!wlan_dcs_afc_6ghz_capable( 1766 wlan_pdev_get_psoc(pdev), 1767 conn_info->sap_5ghz[i].vdev_id)) { 1768 dcs_debug("vdev %d has no 6 GHz capability", 1769 conn_info->sap_5ghz[i].vdev_id); 1770 return; 1771 } 1772 } 1773 } 1774 1775 if (conn_info->sap_5ghz_cnt) { 1776 for (i = 0; i < conn_info->sap_5ghz_cnt; i++) { 1777 if (target_freq == conn_info->sap_5ghz[i].freq && 1778 pref_bw == conn_info->sap_5ghz[i].bw) 1779 continue; 1780 vdev = wlan_objmgr_get_vdev_by_id_from_pdev( 1781 pdev, 1782 conn_info->sap_5ghz[i].vdev_id, 1783 WLAN_DCS_ID); 1784 if (!vdev) 1785 continue; 1786 1787 wlan_dcs_switch_chan(vdev, target_freq, pref_bw); 1788 wlan_objmgr_vdev_release_ref(vdev, WLAN_DCS_ID); 1789 } 1790 } else if (conn_info->sap_6ghz_cnt) { 1791 for (i = 0; i < conn_info->sap_6ghz_cnt; i++) { 1792 if (target_freq == conn_info->sap_6ghz[i].freq && 1793 pref_bw == conn_info->sap_6ghz[i].bw) 1794 continue; 1795 vdev = wlan_objmgr_get_vdev_by_id_from_pdev( 1796 pdev, 1797 conn_info->sap_6ghz[i].vdev_id, 1798 WLAN_DCS_ID); 1799 if (!vdev) 1800 continue; 1801 1802 wlan_dcs_switch_chan(vdev, target_freq, pref_bw); 1803 wlan_objmgr_vdev_release_ref(vdev, WLAN_DCS_ID); 1804 } 1805 } 1806 } 1807 1808 /** 1809 * wlan_dcs_afc_process() - Dynamic SAP channel switch after AFC update 1810 * @psoc: psoc handle 1811 * @pdev_id: pdev id 1812 * 1813 * Return: void 1814 */ 1815 static void 1816 wlan_dcs_afc_process(struct wlan_objmgr_psoc *psoc, uint8_t pdev_id) 1817 { 1818 struct wlan_objmgr_pdev *pdev; 1819 struct wlan_dcs_conn_info conn_info = {0}; 1820 1821 pdev = wlan_objmgr_get_pdev_by_id(psoc, pdev_id, WLAN_DCS_ID); 1822 if (!pdev) { 1823 dcs_err("Invalid pdev id %d", pdev_id); 1824 return; 1825 } 1826 1827 wlan_objmgr_pdev_iterate_obj_list(pdev, WLAN_VDEV_OP, 1828 wlan_dcs_afc_get_conn_info, 1829 &conn_info, 0, WLAN_DCS_ID); 1830 if (conn_info.exit_condition) 1831 goto pdev_release; 1832 1833 if ((conn_info.sap_5ghz_cnt && conn_info.sap_6ghz_cnt) || 1834 (!conn_info.sap_5ghz_cnt && !conn_info.sap_6ghz_cnt)) { 1835 dcs_debug("NA for %d 5 GHz SAP, %d 6 GHz SAP", 1836 conn_info.sap_5ghz_cnt, conn_info.sap_6ghz_cnt); 1837 goto pdev_release; 1838 } 1839 1840 if (conn_info.sta_cnt && 1841 !WLAN_REG_IS_24GHZ_CH_FREQ(conn_info.sta[0].freq)) 1842 wlan_dcs_afc_sap_dcs_with_sta(pdev, &conn_info); 1843 else 1844 wlan_dcs_afc_5ghz6ghz_sap_dcs(pdev, &conn_info); 1845 1846 pdev_release: 1847 wlan_objmgr_pdev_release_ref(pdev, WLAN_DCS_ID); 1848 } 1849 #else 1850 static inline void 1851 wlan_dcs_afc_process(struct wlan_objmgr_psoc *psoc, uint8_t pdev_id) {} 1852 #endif 1853 1854 QDF_STATUS 1855 wlan_dcs_process(struct wlan_objmgr_psoc *psoc, 1856 struct wlan_host_dcs_event *event) 1857 { 1858 struct dcs_pdev_priv_obj *dcs_pdev_priv; 1859 bool start_dcs_cbk_handler = false; 1860 1861 if (!psoc || !event) { 1862 dcs_err("psoc or event is NULL"); 1863 return QDF_STATUS_E_INVAL; 1864 } 1865 1866 dcs_pdev_priv = wlan_dcs_get_pdev_private_obj(psoc, 1867 event->dcs_param.pdev_id); 1868 if (!dcs_pdev_priv) { 1869 dcs_err("dcs pdev private object is null"); 1870 return QDF_STATUS_E_INVAL; 1871 } 1872 1873 if (unlikely(dcs_pdev_priv->dcs_host_params.dcs_debug 1874 >= DCS_DEBUG_VERBOSE)) 1875 dcs_debug("dcs_enable: %u, interference_type: %u, pdev_id: %u", 1876 dcs_pdev_priv->dcs_host_params.dcs_enable, 1877 event->dcs_param.interference_type, 1878 event->dcs_param.pdev_id); 1879 1880 switch (event->dcs_param.interference_type) { 1881 case WLAN_HOST_DCS_CWIM: 1882 break; 1883 case WLAN_HOST_DCS_WLANIM: 1884 if (!dcs_pdev_priv->dcs_host_params.dcs_enable) 1885 break; 1886 1887 if (dcs_pdev_priv->dcs_host_params.dcs_enable & 1888 WLAN_HOST_DCS_WLANIM) 1889 start_dcs_cbk_handler = 1890 wlan_dcs_wlan_interference_process( 1891 &event->wlan_stat, 1892 dcs_pdev_priv); 1893 if (dcs_pdev_priv->user_cb && 1894 dcs_pdev_priv->dcs_host_params.notify_user) { 1895 dcs_pdev_priv->dcs_host_params.notify_user = 0; 1896 dcs_pdev_priv->user_cb(dcs_pdev_priv->requestor_vdev_id, 1897 &dcs_pdev_priv->dcs_im_stats.user_dcs_im_stats, 1898 0); 1899 } 1900 if (start_dcs_cbk_handler) 1901 wlan_dcs_frequency_control(psoc, 1902 dcs_pdev_priv, 1903 event); 1904 break; 1905 case WLAN_HOST_DCS_AWGNIM: 1906 /* Skip frequency control for AWGNIM */ 1907 wlan_dcs_awgn_process(psoc, event->dcs_param.pdev_id, 1908 &event->awgn_info); 1909 break; 1910 case WLAN_HOST_DCS_AFC: 1911 wlan_dcs_afc_process(psoc, event->dcs_param.pdev_id); 1912 break; 1913 default: 1914 dcs_err("unidentified interference type reported"); 1915 break; 1916 } 1917 1918 return QDF_STATUS_SUCCESS; 1919 } 1920 1921 void wlan_dcs_clear(struct wlan_objmgr_psoc *psoc, uint32_t pdev_id) 1922 { 1923 struct dcs_pdev_priv_obj *dcs_pdev_priv; 1924 1925 if (!psoc) { 1926 dcs_err("psoc is null"); 1927 return; 1928 } 1929 1930 dcs_pdev_priv = wlan_dcs_get_pdev_private_obj(psoc, pdev_id); 1931 if (!dcs_pdev_priv) { 1932 dcs_err("dcs pdev private object is null"); 1933 return; 1934 } 1935 1936 qdf_timer_stop(&dcs_pdev_priv->dcs_disable_timer); 1937 qdf_mem_set(&dcs_pdev_priv->dcs_im_stats, 1938 sizeof(dcs_pdev_priv->dcs_im_stats), 0); 1939 qdf_mem_set(dcs_pdev_priv->dcs_freq_ctrl_params.timestamp, 1940 MAX_DCS_TIME_RECORD * sizeof(unsigned long), 0); 1941 dcs_pdev_priv->dcs_freq_ctrl_params.dcs_happened_count = 0; 1942 dcs_pdev_priv->dcs_freq_ctrl_params.disable_delay_process = false; 1943 wlan_dcs_set_algorithm_process(psoc, pdev_id, false); 1944 } 1945 1946 void wlan_dcs_set_algorithm_process(struct wlan_objmgr_psoc *psoc, 1947 uint32_t pdev_id, 1948 bool dcs_algorithm_process) 1949 { 1950 struct dcs_pdev_priv_obj *dcs_pdev_priv; 1951 1952 dcs_pdev_priv = wlan_dcs_get_pdev_private_obj(psoc, pdev_id); 1953 if (!dcs_pdev_priv) { 1954 dcs_err("dcs pdev private object is null"); 1955 return; 1956 } 1957 1958 if (dcs_pdev_priv->dcs_host_params.force_disable_algorithm) { 1959 dcs_debug("dcs algorithm is disabled forcely"); 1960 dcs_pdev_priv->dcs_host_params.dcs_algorithm_process = false; 1961 return; 1962 } 1963 1964 dcs_pdev_priv->dcs_host_params.dcs_algorithm_process = 1965 dcs_algorithm_process; 1966 } 1967