1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause 2 /* 3 * Copyright (C) 2012-2014, 2018-2024 Intel Corporation 4 * Copyright (C) 2013-2015 Intel Mobile Communications GmbH 5 * Copyright (C) 2016-2017 Intel Deutschland GmbH 6 */ 7 #include "mvm.h" 8 #include "debugfs.h" 9 #if defined(__FreeBSD__) 10 #include <linux/math64.h> 11 #endif 12 13 static void iwl_dbgfs_update_pm(struct iwl_mvm *mvm, 14 struct ieee80211_vif *vif, 15 enum iwl_dbgfs_pm_mask param, int val) 16 { 17 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 18 struct iwl_dbgfs_pm *dbgfs_pm = &mvmvif->dbgfs_pm; 19 20 dbgfs_pm->mask |= param; 21 22 switch (param) { 23 case MVM_DEBUGFS_PM_KEEP_ALIVE: { 24 int dtimper = vif->bss_conf.dtim_period ?: 1; 25 int dtimper_msec = dtimper * vif->bss_conf.beacon_int; 26 27 IWL_DEBUG_POWER(mvm, "debugfs: set keep_alive= %d sec\n", val); 28 if (val * MSEC_PER_SEC < 3 * dtimper_msec) 29 IWL_WARN(mvm, 30 "debugfs: keep alive period (%ld msec) is less than minimum required (%d msec)\n", 31 val * MSEC_PER_SEC, 3 * dtimper_msec); 32 dbgfs_pm->keep_alive_seconds = val; 33 break; 34 } 35 case MVM_DEBUGFS_PM_SKIP_OVER_DTIM: 36 IWL_DEBUG_POWER(mvm, "skip_over_dtim %s\n", 37 val ? "enabled" : "disabled"); 38 dbgfs_pm->skip_over_dtim = val; 39 break; 40 case MVM_DEBUGFS_PM_SKIP_DTIM_PERIODS: 41 IWL_DEBUG_POWER(mvm, "skip_dtim_periods=%d\n", val); 42 dbgfs_pm->skip_dtim_periods = val; 43 break; 44 case MVM_DEBUGFS_PM_RX_DATA_TIMEOUT: 45 IWL_DEBUG_POWER(mvm, "rx_data_timeout=%d\n", val); 46 dbgfs_pm->rx_data_timeout = val; 47 break; 48 case MVM_DEBUGFS_PM_TX_DATA_TIMEOUT: 49 IWL_DEBUG_POWER(mvm, "tx_data_timeout=%d\n", val); 50 dbgfs_pm->tx_data_timeout = val; 51 break; 52 case MVM_DEBUGFS_PM_LPRX_ENA: 53 IWL_DEBUG_POWER(mvm, "lprx %s\n", val ? "enabled" : "disabled"); 54 dbgfs_pm->lprx_ena = val; 55 break; 56 case MVM_DEBUGFS_PM_LPRX_RSSI_THRESHOLD: 57 IWL_DEBUG_POWER(mvm, "lprx_rssi_threshold=%d\n", val); 58 dbgfs_pm->lprx_rssi_threshold = val; 59 break; 60 case MVM_DEBUGFS_PM_SNOOZE_ENABLE: 61 IWL_DEBUG_POWER(mvm, "snooze_enable=%d\n", val); 62 dbgfs_pm->snooze_ena = val; 63 break; 64 case MVM_DEBUGFS_PM_UAPSD_MISBEHAVING: 65 IWL_DEBUG_POWER(mvm, "uapsd_misbehaving_enable=%d\n", val); 66 dbgfs_pm->uapsd_misbehaving = val; 67 break; 68 case MVM_DEBUGFS_PM_USE_PS_POLL: 69 IWL_DEBUG_POWER(mvm, "use_ps_poll=%d\n", val); 70 dbgfs_pm->use_ps_poll = val; 71 break; 72 } 73 } 74 75 static ssize_t iwl_dbgfs_pm_params_write(struct ieee80211_vif *vif, char *buf, 76 size_t count, loff_t *ppos) 77 { 78 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 79 struct iwl_mvm *mvm = mvmvif->mvm; 80 enum iwl_dbgfs_pm_mask param; 81 int val, ret; 82 83 if (!strncmp("keep_alive=", buf, 11)) { 84 if (sscanf(buf + 11, "%d", &val) != 1) 85 return -EINVAL; 86 param = MVM_DEBUGFS_PM_KEEP_ALIVE; 87 } else if (!strncmp("skip_over_dtim=", buf, 15)) { 88 if (sscanf(buf + 15, "%d", &val) != 1) 89 return -EINVAL; 90 param = MVM_DEBUGFS_PM_SKIP_OVER_DTIM; 91 } else if (!strncmp("skip_dtim_periods=", buf, 18)) { 92 if (sscanf(buf + 18, "%d", &val) != 1) 93 return -EINVAL; 94 param = MVM_DEBUGFS_PM_SKIP_DTIM_PERIODS; 95 } else if (!strncmp("rx_data_timeout=", buf, 16)) { 96 if (sscanf(buf + 16, "%d", &val) != 1) 97 return -EINVAL; 98 param = MVM_DEBUGFS_PM_RX_DATA_TIMEOUT; 99 } else if (!strncmp("tx_data_timeout=", buf, 16)) { 100 if (sscanf(buf + 16, "%d", &val) != 1) 101 return -EINVAL; 102 param = MVM_DEBUGFS_PM_TX_DATA_TIMEOUT; 103 } else if (!strncmp("lprx=", buf, 5)) { 104 if (sscanf(buf + 5, "%d", &val) != 1) 105 return -EINVAL; 106 param = MVM_DEBUGFS_PM_LPRX_ENA; 107 } else if (!strncmp("lprx_rssi_threshold=", buf, 20)) { 108 if (sscanf(buf + 20, "%d", &val) != 1) 109 return -EINVAL; 110 if (val > POWER_LPRX_RSSI_THRESHOLD_MAX || val < 111 POWER_LPRX_RSSI_THRESHOLD_MIN) 112 return -EINVAL; 113 param = MVM_DEBUGFS_PM_LPRX_RSSI_THRESHOLD; 114 } else if (!strncmp("snooze_enable=", buf, 14)) { 115 if (sscanf(buf + 14, "%d", &val) != 1) 116 return -EINVAL; 117 param = MVM_DEBUGFS_PM_SNOOZE_ENABLE; 118 } else if (!strncmp("uapsd_misbehaving=", buf, 18)) { 119 if (sscanf(buf + 18, "%d", &val) != 1) 120 return -EINVAL; 121 param = MVM_DEBUGFS_PM_UAPSD_MISBEHAVING; 122 } else if (!strncmp("use_ps_poll=", buf, 12)) { 123 if (sscanf(buf + 12, "%d", &val) != 1) 124 return -EINVAL; 125 param = MVM_DEBUGFS_PM_USE_PS_POLL; 126 } else { 127 return -EINVAL; 128 } 129 130 mutex_lock(&mvm->mutex); 131 iwl_dbgfs_update_pm(mvm, vif, param, val); 132 ret = iwl_mvm_power_update_mac(mvm); 133 mutex_unlock(&mvm->mutex); 134 135 return ret ?: count; 136 } 137 138 static ssize_t iwl_dbgfs_tx_pwr_lmt_read(struct file *file, 139 char __user *user_buf, 140 size_t count, loff_t *ppos) 141 { 142 struct ieee80211_vif *vif = file->private_data; 143 char buf[64]; 144 int bufsz = sizeof(buf); 145 int pos; 146 147 pos = scnprintf(buf, bufsz, "bss limit = %d\n", 148 vif->bss_conf.txpower); 149 150 return simple_read_from_buffer(user_buf, count, ppos, buf, pos); 151 } 152 153 static ssize_t iwl_dbgfs_pm_params_read(struct file *file, 154 char __user *user_buf, 155 size_t count, loff_t *ppos) 156 { 157 struct ieee80211_vif *vif = file->private_data; 158 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 159 struct iwl_mvm *mvm = mvmvif->mvm; 160 char buf[512]; 161 int bufsz = sizeof(buf); 162 int pos; 163 164 pos = iwl_mvm_power_mac_dbgfs_read(mvm, vif, buf, bufsz); 165 166 return simple_read_from_buffer(user_buf, count, ppos, buf, pos); 167 } 168 169 static ssize_t iwl_dbgfs_mac_params_read(struct file *file, 170 char __user *user_buf, 171 size_t count, loff_t *ppos) 172 { 173 struct ieee80211_vif *vif = file->private_data; 174 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 175 struct iwl_mvm *mvm = mvmvif->mvm; 176 u8 ap_sta_id; 177 struct ieee80211_chanctx_conf *chanctx_conf; 178 char buf[512]; 179 int bufsz = sizeof(buf); 180 int pos = 0; 181 int i; 182 183 mutex_lock(&mvm->mutex); 184 185 ap_sta_id = mvmvif->deflink.ap_sta_id; 186 187 switch (ieee80211_vif_type_p2p(vif)) { 188 case NL80211_IFTYPE_ADHOC: 189 pos += scnprintf(buf+pos, bufsz-pos, "type: ibss\n"); 190 break; 191 case NL80211_IFTYPE_STATION: 192 pos += scnprintf(buf+pos, bufsz-pos, "type: bss\n"); 193 break; 194 case NL80211_IFTYPE_AP: 195 pos += scnprintf(buf+pos, bufsz-pos, "type: ap\n"); 196 break; 197 case NL80211_IFTYPE_P2P_CLIENT: 198 pos += scnprintf(buf+pos, bufsz-pos, "type: p2p client\n"); 199 break; 200 case NL80211_IFTYPE_P2P_GO: 201 pos += scnprintf(buf+pos, bufsz-pos, "type: p2p go\n"); 202 break; 203 case NL80211_IFTYPE_P2P_DEVICE: 204 pos += scnprintf(buf+pos, bufsz-pos, "type: p2p dev\n"); 205 break; 206 default: 207 break; 208 } 209 210 pos += scnprintf(buf+pos, bufsz-pos, "mac id/color: %d / %d\n", 211 mvmvif->id, mvmvif->color); 212 pos += scnprintf(buf+pos, bufsz-pos, "bssid: %pM\n", 213 vif->bss_conf.bssid); 214 pos += scnprintf(buf+pos, bufsz-pos, "Load: %d\n", 215 mvm->tcm.result.load[mvmvif->id]); 216 pos += scnprintf(buf+pos, bufsz-pos, "QoS:\n"); 217 for (i = 0; i < ARRAY_SIZE(mvmvif->deflink.queue_params); i++) 218 pos += scnprintf(buf+pos, bufsz-pos, 219 "\t%d: txop:%d - cw_min:%d - cw_max = %d - aifs = %d upasd = %d\n", 220 i, mvmvif->deflink.queue_params[i].txop, 221 mvmvif->deflink.queue_params[i].cw_min, 222 mvmvif->deflink.queue_params[i].cw_max, 223 mvmvif->deflink.queue_params[i].aifs, 224 mvmvif->deflink.queue_params[i].uapsd); 225 226 if (vif->type == NL80211_IFTYPE_STATION && 227 ap_sta_id != IWL_MVM_INVALID_STA) { 228 struct iwl_mvm_sta *mvm_sta; 229 230 mvm_sta = iwl_mvm_sta_from_staid_protected(mvm, ap_sta_id); 231 if (mvm_sta) { 232 pos += scnprintf(buf+pos, bufsz-pos, 233 "ap_sta_id %d - reduced Tx power %d\n", 234 ap_sta_id, 235 mvm_sta->bt_reduced_txpower); 236 } 237 } 238 239 rcu_read_lock(); 240 chanctx_conf = rcu_dereference(vif->bss_conf.chanctx_conf); 241 if (chanctx_conf) 242 pos += scnprintf(buf+pos, bufsz-pos, 243 "idle rx chains %d, active rx chains: %d\n", 244 chanctx_conf->rx_chains_static, 245 chanctx_conf->rx_chains_dynamic); 246 rcu_read_unlock(); 247 248 mutex_unlock(&mvm->mutex); 249 250 return simple_read_from_buffer(user_buf, count, ppos, buf, pos); 251 } 252 253 static void iwl_dbgfs_update_bf(struct ieee80211_vif *vif, 254 enum iwl_dbgfs_bf_mask param, int value) 255 { 256 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 257 struct iwl_dbgfs_bf *dbgfs_bf = &mvmvif->dbgfs_bf; 258 259 dbgfs_bf->mask |= param; 260 261 switch (param) { 262 case MVM_DEBUGFS_BF_ENERGY_DELTA: 263 dbgfs_bf->bf_energy_delta = value; 264 break; 265 case MVM_DEBUGFS_BF_ROAMING_ENERGY_DELTA: 266 dbgfs_bf->bf_roaming_energy_delta = value; 267 break; 268 case MVM_DEBUGFS_BF_ROAMING_STATE: 269 dbgfs_bf->bf_roaming_state = value; 270 break; 271 case MVM_DEBUGFS_BF_TEMP_THRESHOLD: 272 dbgfs_bf->bf_temp_threshold = value; 273 break; 274 case MVM_DEBUGFS_BF_TEMP_FAST_FILTER: 275 dbgfs_bf->bf_temp_fast_filter = value; 276 break; 277 case MVM_DEBUGFS_BF_TEMP_SLOW_FILTER: 278 dbgfs_bf->bf_temp_slow_filter = value; 279 break; 280 case MVM_DEBUGFS_BF_ENABLE_BEACON_FILTER: 281 dbgfs_bf->bf_enable_beacon_filter = value; 282 break; 283 case MVM_DEBUGFS_BF_DEBUG_FLAG: 284 dbgfs_bf->bf_debug_flag = value; 285 break; 286 case MVM_DEBUGFS_BF_ESCAPE_TIMER: 287 dbgfs_bf->bf_escape_timer = value; 288 break; 289 case MVM_DEBUGFS_BA_ENABLE_BEACON_ABORT: 290 dbgfs_bf->ba_enable_beacon_abort = value; 291 break; 292 case MVM_DEBUGFS_BA_ESCAPE_TIMER: 293 dbgfs_bf->ba_escape_timer = value; 294 break; 295 } 296 } 297 298 static ssize_t iwl_dbgfs_bf_params_write(struct ieee80211_vif *vif, char *buf, 299 size_t count, loff_t *ppos) 300 { 301 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 302 struct iwl_mvm *mvm = mvmvif->mvm; 303 enum iwl_dbgfs_bf_mask param; 304 int value, ret = 0; 305 306 if (!strncmp("bf_energy_delta=", buf, 16)) { 307 if (sscanf(buf+16, "%d", &value) != 1) 308 return -EINVAL; 309 if (value < IWL_BF_ENERGY_DELTA_MIN || 310 value > IWL_BF_ENERGY_DELTA_MAX) 311 return -EINVAL; 312 param = MVM_DEBUGFS_BF_ENERGY_DELTA; 313 } else if (!strncmp("bf_roaming_energy_delta=", buf, 24)) { 314 if (sscanf(buf+24, "%d", &value) != 1) 315 return -EINVAL; 316 if (value < IWL_BF_ROAMING_ENERGY_DELTA_MIN || 317 value > IWL_BF_ROAMING_ENERGY_DELTA_MAX) 318 return -EINVAL; 319 param = MVM_DEBUGFS_BF_ROAMING_ENERGY_DELTA; 320 } else if (!strncmp("bf_roaming_state=", buf, 17)) { 321 if (sscanf(buf+17, "%d", &value) != 1) 322 return -EINVAL; 323 if (value < IWL_BF_ROAMING_STATE_MIN || 324 value > IWL_BF_ROAMING_STATE_MAX) 325 return -EINVAL; 326 param = MVM_DEBUGFS_BF_ROAMING_STATE; 327 } else if (!strncmp("bf_temp_threshold=", buf, 18)) { 328 if (sscanf(buf+18, "%d", &value) != 1) 329 return -EINVAL; 330 if (value < IWL_BF_TEMP_THRESHOLD_MIN || 331 value > IWL_BF_TEMP_THRESHOLD_MAX) 332 return -EINVAL; 333 param = MVM_DEBUGFS_BF_TEMP_THRESHOLD; 334 } else if (!strncmp("bf_temp_fast_filter=", buf, 20)) { 335 if (sscanf(buf+20, "%d", &value) != 1) 336 return -EINVAL; 337 if (value < IWL_BF_TEMP_FAST_FILTER_MIN || 338 value > IWL_BF_TEMP_FAST_FILTER_MAX) 339 return -EINVAL; 340 param = MVM_DEBUGFS_BF_TEMP_FAST_FILTER; 341 } else if (!strncmp("bf_temp_slow_filter=", buf, 20)) { 342 if (sscanf(buf+20, "%d", &value) != 1) 343 return -EINVAL; 344 if (value < IWL_BF_TEMP_SLOW_FILTER_MIN || 345 value > IWL_BF_TEMP_SLOW_FILTER_MAX) 346 return -EINVAL; 347 param = MVM_DEBUGFS_BF_TEMP_SLOW_FILTER; 348 } else if (!strncmp("bf_enable_beacon_filter=", buf, 24)) { 349 if (sscanf(buf+24, "%d", &value) != 1) 350 return -EINVAL; 351 if (value < 0 || value > 1) 352 return -EINVAL; 353 param = MVM_DEBUGFS_BF_ENABLE_BEACON_FILTER; 354 } else if (!strncmp("bf_debug_flag=", buf, 14)) { 355 if (sscanf(buf+14, "%d", &value) != 1) 356 return -EINVAL; 357 if (value < 0 || value > 1) 358 return -EINVAL; 359 param = MVM_DEBUGFS_BF_DEBUG_FLAG; 360 } else if (!strncmp("bf_escape_timer=", buf, 16)) { 361 if (sscanf(buf+16, "%d", &value) != 1) 362 return -EINVAL; 363 if (value < IWL_BF_ESCAPE_TIMER_MIN || 364 value > IWL_BF_ESCAPE_TIMER_MAX) 365 return -EINVAL; 366 param = MVM_DEBUGFS_BF_ESCAPE_TIMER; 367 } else if (!strncmp("ba_escape_timer=", buf, 16)) { 368 if (sscanf(buf+16, "%d", &value) != 1) 369 return -EINVAL; 370 if (value < IWL_BA_ESCAPE_TIMER_MIN || 371 value > IWL_BA_ESCAPE_TIMER_MAX) 372 return -EINVAL; 373 param = MVM_DEBUGFS_BA_ESCAPE_TIMER; 374 } else if (!strncmp("ba_enable_beacon_abort=", buf, 23)) { 375 if (sscanf(buf+23, "%d", &value) != 1) 376 return -EINVAL; 377 if (value < 0 || value > 1) 378 return -EINVAL; 379 param = MVM_DEBUGFS_BA_ENABLE_BEACON_ABORT; 380 } else { 381 return -EINVAL; 382 } 383 384 mutex_lock(&mvm->mutex); 385 iwl_dbgfs_update_bf(vif, param, value); 386 if (param == MVM_DEBUGFS_BF_ENABLE_BEACON_FILTER && !value) 387 ret = iwl_mvm_disable_beacon_filter(mvm, vif); 388 else 389 ret = iwl_mvm_enable_beacon_filter(mvm, vif); 390 mutex_unlock(&mvm->mutex); 391 392 return ret ?: count; 393 } 394 395 static ssize_t iwl_dbgfs_bf_params_read(struct file *file, 396 char __user *user_buf, 397 size_t count, loff_t *ppos) 398 { 399 struct ieee80211_vif *vif = file->private_data; 400 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 401 char buf[256]; 402 int pos = 0; 403 const size_t bufsz = sizeof(buf); 404 struct iwl_beacon_filter_cmd cmd = { 405 IWL_BF_CMD_CONFIG_DEFAULTS, 406 .bf_enable_beacon_filter = 407 cpu_to_le32(IWL_BF_ENABLE_BEACON_FILTER_DEFAULT), 408 .ba_enable_beacon_abort = 409 cpu_to_le32(IWL_BA_ENABLE_BEACON_ABORT_DEFAULT), 410 }; 411 412 iwl_mvm_beacon_filter_debugfs_parameters(vif, &cmd); 413 if (mvmvif->bf_enabled) 414 cmd.bf_enable_beacon_filter = cpu_to_le32(1); 415 else 416 cmd.bf_enable_beacon_filter = 0; 417 418 pos += scnprintf(buf+pos, bufsz-pos, "bf_energy_delta = %d\n", 419 le32_to_cpu(cmd.bf_energy_delta)); 420 pos += scnprintf(buf+pos, bufsz-pos, "bf_roaming_energy_delta = %d\n", 421 le32_to_cpu(cmd.bf_roaming_energy_delta)); 422 pos += scnprintf(buf+pos, bufsz-pos, "bf_roaming_state = %d\n", 423 le32_to_cpu(cmd.bf_roaming_state)); 424 pos += scnprintf(buf+pos, bufsz-pos, "bf_temp_threshold = %d\n", 425 le32_to_cpu(cmd.bf_temp_threshold)); 426 pos += scnprintf(buf+pos, bufsz-pos, "bf_temp_fast_filter = %d\n", 427 le32_to_cpu(cmd.bf_temp_fast_filter)); 428 pos += scnprintf(buf+pos, bufsz-pos, "bf_temp_slow_filter = %d\n", 429 le32_to_cpu(cmd.bf_temp_slow_filter)); 430 pos += scnprintf(buf+pos, bufsz-pos, "bf_enable_beacon_filter = %d\n", 431 le32_to_cpu(cmd.bf_enable_beacon_filter)); 432 pos += scnprintf(buf+pos, bufsz-pos, "bf_debug_flag = %d\n", 433 le32_to_cpu(cmd.bf_debug_flag)); 434 pos += scnprintf(buf+pos, bufsz-pos, "bf_escape_timer = %d\n", 435 le32_to_cpu(cmd.bf_escape_timer)); 436 pos += scnprintf(buf+pos, bufsz-pos, "ba_escape_timer = %d\n", 437 le32_to_cpu(cmd.ba_escape_timer)); 438 pos += scnprintf(buf+pos, bufsz-pos, "ba_enable_beacon_abort = %d\n", 439 le32_to_cpu(cmd.ba_enable_beacon_abort)); 440 441 return simple_read_from_buffer(user_buf, count, ppos, buf, pos); 442 } 443 444 static ssize_t iwl_dbgfs_os_device_timediff_read(struct file *file, 445 char __user *user_buf, 446 size_t count, loff_t *ppos) 447 { 448 struct ieee80211_vif *vif = file->private_data; 449 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 450 struct iwl_mvm *mvm = mvmvif->mvm; 451 u32 curr_gp2; 452 u64 curr_os; 453 s64 diff; 454 char buf[64]; 455 const size_t bufsz = sizeof(buf); 456 int pos = 0; 457 458 mutex_lock(&mvm->mutex); 459 iwl_mvm_get_sync_time(mvm, CLOCK_BOOTTIME, &curr_gp2, &curr_os, NULL); 460 mutex_unlock(&mvm->mutex); 461 462 do_div(curr_os, NSEC_PER_USEC); 463 diff = curr_os - curr_gp2; 464 pos += scnprintf(buf + pos, bufsz - pos, "diff=%lld\n", diff); 465 466 return simple_read_from_buffer(user_buf, count, ppos, buf, pos); 467 } 468 469 static ssize_t iwl_dbgfs_low_latency_write(struct ieee80211_vif *vif, char *buf, 470 size_t count, loff_t *ppos) 471 { 472 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 473 struct iwl_mvm *mvm = mvmvif->mvm; 474 u8 value; 475 int ret; 476 477 ret = kstrtou8(buf, 0, &value); 478 if (ret) 479 return ret; 480 if (value > 1) 481 return -EINVAL; 482 483 mutex_lock(&mvm->mutex); 484 iwl_mvm_update_low_latency(mvm, vif, value, LOW_LATENCY_DEBUGFS); 485 mutex_unlock(&mvm->mutex); 486 487 return count; 488 } 489 490 static ssize_t 491 iwl_dbgfs_low_latency_force_write(struct ieee80211_vif *vif, char *buf, 492 size_t count, loff_t *ppos) 493 { 494 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 495 struct iwl_mvm *mvm = mvmvif->mvm; 496 u8 value; 497 int ret; 498 499 ret = kstrtou8(buf, 0, &value); 500 if (ret) 501 return ret; 502 503 if (value > NUM_LOW_LATENCY_FORCE) 504 return -EINVAL; 505 506 mutex_lock(&mvm->mutex); 507 if (value == LOW_LATENCY_FORCE_UNSET) { 508 iwl_mvm_update_low_latency(mvm, vif, false, 509 LOW_LATENCY_DEBUGFS_FORCE); 510 iwl_mvm_update_low_latency(mvm, vif, false, 511 LOW_LATENCY_DEBUGFS_FORCE_ENABLE); 512 } else { 513 iwl_mvm_update_low_latency(mvm, vif, 514 value == LOW_LATENCY_FORCE_ON, 515 LOW_LATENCY_DEBUGFS_FORCE); 516 iwl_mvm_update_low_latency(mvm, vif, true, 517 LOW_LATENCY_DEBUGFS_FORCE_ENABLE); 518 } 519 mutex_unlock(&mvm->mutex); 520 return count; 521 } 522 523 static ssize_t iwl_dbgfs_low_latency_read(struct file *file, 524 char __user *user_buf, 525 size_t count, loff_t *ppos) 526 { 527 struct ieee80211_vif *vif = file->private_data; 528 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 529 char format[] = "traffic=%d\ndbgfs=%d\nvcmd=%d\nvif_type=%d\n" 530 "dbgfs_force_enable=%d\ndbgfs_force=%d\nactual=%d\n"; 531 532 /* 533 * all values in format are boolean so the size of format is enough 534 * for holding the result string 535 */ 536 char buf[sizeof(format) + 1] = {}; 537 int len; 538 539 len = scnprintf(buf, sizeof(buf) - 1, format, 540 !!(mvmvif->low_latency & LOW_LATENCY_TRAFFIC), 541 !!(mvmvif->low_latency & LOW_LATENCY_DEBUGFS), 542 !!(mvmvif->low_latency & LOW_LATENCY_VCMD), 543 !!(mvmvif->low_latency & LOW_LATENCY_VIF_TYPE), 544 !!(mvmvif->low_latency & 545 LOW_LATENCY_DEBUGFS_FORCE_ENABLE), 546 !!(mvmvif->low_latency & LOW_LATENCY_DEBUGFS_FORCE), 547 !!(mvmvif->low_latency_actual)); 548 return simple_read_from_buffer(user_buf, count, ppos, buf, len); 549 } 550 551 static ssize_t iwl_dbgfs_uapsd_misbehaving_read(struct file *file, 552 char __user *user_buf, 553 size_t count, loff_t *ppos) 554 { 555 struct ieee80211_vif *vif = file->private_data; 556 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 557 char buf[20]; 558 int len; 559 560 #if defined(__linux__) 561 len = sprintf(buf, "%pM\n", mvmvif->uapsd_misbehaving_ap_addr); 562 #elif defined(__FreeBSD__) 563 len = sprintf(buf, "%6D\n", mvmvif->uapsd_misbehaving_ap_addr, ":"); 564 #endif 565 return simple_read_from_buffer(user_buf, count, ppos, buf, len); 566 } 567 568 static ssize_t iwl_dbgfs_uapsd_misbehaving_write(struct ieee80211_vif *vif, 569 char *buf, size_t count, 570 loff_t *ppos) 571 { 572 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 573 struct iwl_mvm *mvm = mvmvif->mvm; 574 bool ret; 575 576 mutex_lock(&mvm->mutex); 577 ret = mac_pton(buf, mvmvif->uapsd_misbehaving_ap_addr); 578 mutex_unlock(&mvm->mutex); 579 580 return ret ? count : -EINVAL; 581 } 582 583 static ssize_t iwl_dbgfs_rx_phyinfo_write(struct ieee80211_vif *vif, char *buf, 584 size_t count, loff_t *ppos) 585 { 586 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 587 struct iwl_mvm *mvm = mvmvif->mvm; 588 struct ieee80211_bss_conf *link_conf; 589 u16 value; 590 int link_id, ret = -EINVAL; 591 592 ret = kstrtou16(buf, 0, &value); 593 if (ret) 594 return ret; 595 596 mutex_lock(&mvm->mutex); 597 598 mvm->dbgfs_rx_phyinfo = value; 599 600 for_each_vif_active_link(vif, link_conf, link_id) { 601 struct ieee80211_chanctx_conf *chanctx_conf; 602 struct cfg80211_chan_def min_def, ap_def; 603 struct iwl_mvm_phy_ctxt *phy_ctxt; 604 u8 chains_static, chains_dynamic; 605 606 rcu_read_lock(); 607 chanctx_conf = rcu_dereference(link_conf->chanctx_conf); 608 if (!chanctx_conf) { 609 rcu_read_unlock(); 610 continue; 611 } 612 /* A command can't be sent with RCU lock held, so copy 613 * everything here and use it after unlocking 614 */ 615 min_def = chanctx_conf->min_def; 616 ap_def = chanctx_conf->ap; 617 chains_static = chanctx_conf->rx_chains_static; 618 chains_dynamic = chanctx_conf->rx_chains_dynamic; 619 rcu_read_unlock(); 620 621 phy_ctxt = mvmvif->link[link_id]->phy_ctxt; 622 if (!phy_ctxt) 623 continue; 624 625 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &min_def, &ap_def, 626 chains_static, chains_dynamic); 627 } 628 629 mutex_unlock(&mvm->mutex); 630 631 return ret ?: count; 632 } 633 634 static ssize_t iwl_dbgfs_rx_phyinfo_read(struct file *file, 635 char __user *user_buf, 636 size_t count, loff_t *ppos) 637 { 638 struct ieee80211_vif *vif = file->private_data; 639 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 640 char buf[8]; 641 int len; 642 643 len = scnprintf(buf, sizeof(buf), "0x%04x\n", 644 mvmvif->mvm->dbgfs_rx_phyinfo); 645 646 return simple_read_from_buffer(user_buf, count, ppos, buf, len); 647 } 648 649 static void iwl_dbgfs_quota_check(void *data, u8 *mac, 650 struct ieee80211_vif *vif) 651 { 652 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 653 int *ret = data; 654 655 if (mvmvif->dbgfs_quota_min) 656 *ret = -EINVAL; 657 } 658 659 static ssize_t iwl_dbgfs_quota_min_write(struct ieee80211_vif *vif, char *buf, 660 size_t count, loff_t *ppos) 661 { 662 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 663 struct iwl_mvm *mvm = mvmvif->mvm; 664 u16 value; 665 int ret; 666 667 ret = kstrtou16(buf, 0, &value); 668 if (ret) 669 return ret; 670 671 if (value > 95) 672 return -EINVAL; 673 674 mutex_lock(&mvm->mutex); 675 676 mvmvif->dbgfs_quota_min = 0; 677 ieee80211_iterate_interfaces(mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 678 iwl_dbgfs_quota_check, &ret); 679 if (ret == 0) { 680 mvmvif->dbgfs_quota_min = value; 681 iwl_mvm_update_quotas(mvm, false, NULL); 682 } 683 mutex_unlock(&mvm->mutex); 684 685 return ret ?: count; 686 } 687 688 static ssize_t iwl_dbgfs_quota_min_read(struct file *file, 689 char __user *user_buf, 690 size_t count, loff_t *ppos) 691 { 692 struct ieee80211_vif *vif = file->private_data; 693 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 694 char buf[10]; 695 int len; 696 697 len = scnprintf(buf, sizeof(buf), "%d\n", mvmvif->dbgfs_quota_min); 698 699 return simple_read_from_buffer(user_buf, count, ppos, buf, len); 700 } 701 702 static ssize_t iwl_dbgfs_max_tx_op_write(struct ieee80211_vif *vif, char *buf, 703 size_t count, loff_t *ppos) 704 { 705 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 706 struct iwl_mvm *mvm = mvmvif->mvm; 707 u16 value; 708 int ret; 709 710 ret = kstrtou16(buf, 0, &value); 711 if (ret) 712 return ret; 713 714 mutex_lock(&mvm->mutex); 715 mvmvif->max_tx_op = value; 716 mutex_unlock(&mvm->mutex); 717 718 return count; 719 } 720 721 static ssize_t iwl_dbgfs_max_tx_op_read(struct file *file, 722 char __user *user_buf, 723 size_t count, loff_t *ppos) 724 { 725 struct ieee80211_vif *vif = file->private_data; 726 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 727 struct iwl_mvm *mvm = mvmvif->mvm; 728 char buf[10]; 729 int len; 730 731 mutex_lock(&mvm->mutex); 732 len = scnprintf(buf, sizeof(buf), "%hu\n", mvmvif->max_tx_op); 733 mutex_unlock(&mvm->mutex); 734 735 return simple_read_from_buffer(user_buf, count, ppos, buf, len); 736 } 737 738 static ssize_t iwl_dbgfs_int_mlo_scan_write(struct ieee80211_vif *vif, 739 char *buf, size_t count, 740 loff_t *ppos) 741 { 742 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 743 struct iwl_mvm *mvm = mvmvif->mvm; 744 u32 action; 745 int ret; 746 747 if (!vif->cfg.assoc || !ieee80211_vif_is_mld(vif)) 748 return -EINVAL; 749 750 if (kstrtou32(buf, 0, &action)) 751 return -EINVAL; 752 753 mutex_lock(&mvm->mutex); 754 755 if (!action) { 756 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_INT_MLO, false); 757 } else if (action == 1) { 758 ret = iwl_mvm_int_mlo_scan(mvm, vif); 759 } else { 760 ret = -EINVAL; 761 } 762 763 mutex_unlock(&mvm->mutex); 764 765 return ret ?: count; 766 } 767 768 static ssize_t iwl_dbgfs_esr_disable_reason_read(struct file *file, 769 char __user *user_buf, 770 size_t count, loff_t *ppos) 771 { 772 struct ieee80211_vif *vif = file->private_data; 773 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 774 struct iwl_mvm *mvm = mvmvif->mvm; 775 unsigned long esr_mask; 776 char *buf; 777 int bufsz, pos, i; 778 ssize_t rv; 779 780 mutex_lock(&mvm->mutex); 781 esr_mask = mvmvif->esr_disable_reason; 782 mutex_unlock(&mvm->mutex); 783 784 bufsz = hweight32(esr_mask) * 32 + 40; 785 buf = kmalloc(bufsz, GFP_KERNEL); 786 if (!buf) 787 return -ENOMEM; 788 789 pos = scnprintf(buf, bufsz, "EMLSR state: '0x%lx'\nreasons:\n", 790 esr_mask); 791 for_each_set_bit(i, &esr_mask, BITS_PER_LONG) 792 pos += scnprintf(buf + pos, bufsz - pos, " - %s\n", 793 iwl_get_esr_state_string(BIT(i))); 794 795 rv = simple_read_from_buffer(user_buf, count, ppos, buf, pos); 796 kfree(buf); 797 return rv; 798 } 799 800 static ssize_t iwl_dbgfs_esr_disable_reason_write(struct ieee80211_vif *vif, 801 char *buf, size_t count, 802 loff_t *ppos) 803 { 804 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 805 struct iwl_mvm *mvm = mvmvif->mvm; 806 u32 reason; 807 u8 block; 808 int ret; 809 810 ret = sscanf(buf, "%u %hhu", &reason, &block); 811 if (ret < 0) 812 return ret; 813 814 if (hweight16(reason) != 1 || !(reason & IWL_MVM_BLOCK_ESR_REASONS)) 815 return -EINVAL; 816 817 mutex_lock(&mvm->mutex); 818 if (block) 819 iwl_mvm_block_esr(mvm, vif, reason, 820 iwl_mvm_get_primary_link(vif)); 821 else 822 iwl_mvm_unblock_esr(mvm, vif, reason); 823 mutex_unlock(&mvm->mutex); 824 825 return count; 826 } 827 828 #define MVM_DEBUGFS_WRITE_FILE_OPS(name, bufsz) \ 829 _MVM_DEBUGFS_WRITE_FILE_OPS(name, bufsz, struct ieee80211_vif) 830 #define MVM_DEBUGFS_READ_WRITE_FILE_OPS(name, bufsz) \ 831 _MVM_DEBUGFS_READ_WRITE_FILE_OPS(name, bufsz, struct ieee80211_vif) 832 #define MVM_DEBUGFS_ADD_FILE_VIF(name, parent, mode) do { \ 833 debugfs_create_file(#name, mode, parent, vif, \ 834 &iwl_dbgfs_##name##_ops); \ 835 } while (0) 836 837 MVM_DEBUGFS_READ_FILE_OPS(mac_params); 838 MVM_DEBUGFS_READ_FILE_OPS(tx_pwr_lmt); 839 MVM_DEBUGFS_READ_WRITE_FILE_OPS(pm_params, 32); 840 MVM_DEBUGFS_READ_WRITE_FILE_OPS(bf_params, 256); 841 MVM_DEBUGFS_READ_WRITE_FILE_OPS(low_latency, 10); 842 MVM_DEBUGFS_WRITE_FILE_OPS(low_latency_force, 10); 843 MVM_DEBUGFS_READ_WRITE_FILE_OPS(uapsd_misbehaving, 20); 844 MVM_DEBUGFS_READ_WRITE_FILE_OPS(rx_phyinfo, 10); 845 MVM_DEBUGFS_READ_WRITE_FILE_OPS(quota_min, 32); 846 MVM_DEBUGFS_READ_FILE_OPS(os_device_timediff); 847 MVM_DEBUGFS_READ_WRITE_FILE_OPS(max_tx_op, 10); 848 MVM_DEBUGFS_WRITE_FILE_OPS(int_mlo_scan, 32); 849 MVM_DEBUGFS_READ_WRITE_FILE_OPS(esr_disable_reason, 32); 850 851 void iwl_mvm_vif_add_debugfs(struct ieee80211_hw *hw, struct ieee80211_vif *vif) 852 { 853 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 854 struct dentry *dbgfs_dir = vif->debugfs_dir; 855 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 856 857 mvmvif->dbgfs_dir = debugfs_create_dir("iwlmvm", dbgfs_dir); 858 if (IS_ERR_OR_NULL(mvmvif->dbgfs_dir)) { 859 IWL_ERR(mvm, "Failed to create debugfs directory under %pd\n", 860 dbgfs_dir); 861 return; 862 } 863 864 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM && 865 ((vif->type == NL80211_IFTYPE_STATION && !vif->p2p) || 866 (vif->type == NL80211_IFTYPE_STATION && vif->p2p))) 867 MVM_DEBUGFS_ADD_FILE_VIF(pm_params, mvmvif->dbgfs_dir, 0600); 868 869 MVM_DEBUGFS_ADD_FILE_VIF(tx_pwr_lmt, mvmvif->dbgfs_dir, 0400); 870 MVM_DEBUGFS_ADD_FILE_VIF(mac_params, mvmvif->dbgfs_dir, 0400); 871 MVM_DEBUGFS_ADD_FILE_VIF(low_latency, mvmvif->dbgfs_dir, 0600); 872 MVM_DEBUGFS_ADD_FILE_VIF(low_latency_force, mvmvif->dbgfs_dir, 0600); 873 MVM_DEBUGFS_ADD_FILE_VIF(uapsd_misbehaving, mvmvif->dbgfs_dir, 0600); 874 MVM_DEBUGFS_ADD_FILE_VIF(rx_phyinfo, mvmvif->dbgfs_dir, 0600); 875 MVM_DEBUGFS_ADD_FILE_VIF(quota_min, mvmvif->dbgfs_dir, 0600); 876 MVM_DEBUGFS_ADD_FILE_VIF(os_device_timediff, mvmvif->dbgfs_dir, 0400); 877 MVM_DEBUGFS_ADD_FILE_VIF(max_tx_op, mvmvif->dbgfs_dir, 0600); 878 debugfs_create_bool("ftm_unprotected", 0200, mvmvif->dbgfs_dir, 879 &mvmvif->ftm_unprotected); 880 MVM_DEBUGFS_ADD_FILE_VIF(int_mlo_scan, mvmvif->dbgfs_dir, 0200); 881 MVM_DEBUGFS_ADD_FILE_VIF(esr_disable_reason, mvmvif->dbgfs_dir, 0600); 882 883 if (vif->type == NL80211_IFTYPE_STATION && !vif->p2p && 884 mvmvif == mvm->bf_allowed_vif) 885 MVM_DEBUGFS_ADD_FILE_VIF(bf_params, mvmvif->dbgfs_dir, 0600); 886 } 887 888 void iwl_mvm_vif_dbgfs_add_link(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 889 { 890 struct dentry *dbgfs_dir = vif->debugfs_dir; 891 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 892 char buf[3 * 3 + 11 + (NL80211_WIPHY_NAME_MAXLEN + 1) + 893 (7 + IFNAMSIZ + 1) + 6 + 1]; 894 char name[7 + IFNAMSIZ + 1]; 895 896 /* this will happen in monitor mode */ 897 if (!dbgfs_dir) 898 return; 899 900 #if defined(__linux__) 901 /* 902 * Create symlink for convenience pointing to interface specific 903 * debugfs entries for the driver. For example, under 904 * /sys/kernel/debug/iwlwifi/0000\:02\:00.0/iwlmvm/ 905 * find 906 * netdev:wlan0 -> ../../../ieee80211/phy0/netdev:wlan0/iwlmvm/ 907 */ 908 snprintf(name, sizeof(name), "%pd", dbgfs_dir); 909 snprintf(buf, sizeof(buf), "../../../%pd3/iwlmvm", dbgfs_dir); 910 911 mvmvif->dbgfs_slink = 912 debugfs_create_symlink(name, mvm->debugfs_dir, buf); 913 #endif 914 } 915 916 void iwl_mvm_vif_dbgfs_rm_link(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 917 { 918 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 919 920 debugfs_remove(mvmvif->dbgfs_slink); 921 mvmvif->dbgfs_slink = NULL; 922 } 923 924 #define MVM_DEBUGFS_WRITE_LINK_FILE_OPS(name, bufsz) \ 925 _MVM_DEBUGFS_WRITE_FILE_OPS(link_##name, bufsz, \ 926 struct ieee80211_bss_conf) 927 #define MVM_DEBUGFS_READ_WRITE_LINK_FILE_OPS(name, bufsz) \ 928 _MVM_DEBUGFS_READ_WRITE_FILE_OPS(link_##name, bufsz, \ 929 struct ieee80211_bss_conf) 930 #define MVM_DEBUGFS_ADD_LINK_FILE(name, parent, mode) \ 931 debugfs_create_file(#name, mode, parent, link_conf, \ 932 &iwl_dbgfs_link_##name##_ops) 933 934 static void iwl_mvm_debugfs_add_link_files(struct ieee80211_vif *vif, 935 struct ieee80211_bss_conf *link_conf, 936 struct dentry *mvm_dir) 937 { 938 /* Add per-link files here*/ 939 } 940 941 void iwl_mvm_link_add_debugfs(struct ieee80211_hw *hw, 942 struct ieee80211_vif *vif, 943 struct ieee80211_bss_conf *link_conf, 944 struct dentry *dir) 945 { 946 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 947 struct iwl_mvm *mvm = mvmvif->mvm; 948 unsigned int link_id = link_conf->link_id; 949 struct iwl_mvm_vif_link_info *link_info = mvmvif->link[link_id]; 950 struct dentry *mvm_dir; 951 952 if (WARN_ON(!link_info) || !dir) 953 return; 954 955 if (dir == vif->debugfs_dir) { 956 WARN_ON(!mvmvif->dbgfs_dir); 957 mvm_dir = mvmvif->dbgfs_dir; 958 } else { 959 mvm_dir = debugfs_create_dir("iwlmvm", dir); 960 if (IS_ERR_OR_NULL(mvm_dir)) { 961 IWL_ERR(mvm, "Failed to create debugfs directory under %pd\n", 962 dir); 963 return; 964 } 965 } 966 967 iwl_mvm_debugfs_add_link_files(vif, link_conf, mvm_dir); 968 } 969