1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause 2 /* 3 * Copyright (C) 2012-2014, 2018-2021 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->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->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->queue_params[i].txop, 221 mvmvif->queue_params[i].cw_min, 222 mvmvif->queue_params[i].cw_max, 223 mvmvif->queue_params[i].aifs, 224 mvmvif->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, 0); 388 else 389 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0); 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_data.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 #if defined(__linux__) 445 static inline char *iwl_dbgfs_is_match(char *name, char *buf) 446 { 447 int len = strlen(name); 448 449 return !strncmp(name, buf, len) ? buf + len : NULL; 450 } 451 #endif 452 453 static ssize_t iwl_dbgfs_os_device_timediff_read(struct file *file, 454 char __user *user_buf, 455 size_t count, loff_t *ppos) 456 { 457 struct ieee80211_vif *vif = file->private_data; 458 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 459 struct iwl_mvm *mvm = mvmvif->mvm; 460 u32 curr_gp2; 461 u64 curr_os; 462 s64 diff; 463 char buf[64]; 464 const size_t bufsz = sizeof(buf); 465 int pos = 0; 466 467 mutex_lock(&mvm->mutex); 468 iwl_mvm_get_sync_time(mvm, CLOCK_BOOTTIME, &curr_gp2, &curr_os, NULL); 469 mutex_unlock(&mvm->mutex); 470 471 do_div(curr_os, NSEC_PER_USEC); 472 diff = curr_os - curr_gp2; 473 pos += scnprintf(buf + pos, bufsz - pos, "diff=%lld\n", diff); 474 475 return simple_read_from_buffer(user_buf, count, ppos, buf, pos); 476 } 477 478 static ssize_t iwl_dbgfs_low_latency_write(struct ieee80211_vif *vif, char *buf, 479 size_t count, loff_t *ppos) 480 { 481 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 482 struct iwl_mvm *mvm = mvmvif->mvm; 483 u8 value; 484 int ret; 485 486 ret = kstrtou8(buf, 0, &value); 487 if (ret) 488 return ret; 489 if (value > 1) 490 return -EINVAL; 491 492 mutex_lock(&mvm->mutex); 493 iwl_mvm_update_low_latency(mvm, vif, value, LOW_LATENCY_DEBUGFS); 494 mutex_unlock(&mvm->mutex); 495 496 return count; 497 } 498 499 static ssize_t 500 iwl_dbgfs_low_latency_force_write(struct ieee80211_vif *vif, char *buf, 501 size_t count, loff_t *ppos) 502 { 503 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 504 struct iwl_mvm *mvm = mvmvif->mvm; 505 u8 value; 506 int ret; 507 508 ret = kstrtou8(buf, 0, &value); 509 if (ret) 510 return ret; 511 512 if (value > NUM_LOW_LATENCY_FORCE) 513 return -EINVAL; 514 515 mutex_lock(&mvm->mutex); 516 if (value == LOW_LATENCY_FORCE_UNSET) { 517 iwl_mvm_update_low_latency(mvm, vif, false, 518 LOW_LATENCY_DEBUGFS_FORCE); 519 iwl_mvm_update_low_latency(mvm, vif, false, 520 LOW_LATENCY_DEBUGFS_FORCE_ENABLE); 521 } else { 522 iwl_mvm_update_low_latency(mvm, vif, 523 value == LOW_LATENCY_FORCE_ON, 524 LOW_LATENCY_DEBUGFS_FORCE); 525 iwl_mvm_update_low_latency(mvm, vif, true, 526 LOW_LATENCY_DEBUGFS_FORCE_ENABLE); 527 } 528 mutex_unlock(&mvm->mutex); 529 return count; 530 } 531 532 static ssize_t iwl_dbgfs_low_latency_read(struct file *file, 533 char __user *user_buf, 534 size_t count, loff_t *ppos) 535 { 536 struct ieee80211_vif *vif = file->private_data; 537 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 538 char format[] = "traffic=%d\ndbgfs=%d\nvcmd=%d\nvif_type=%d\n" 539 "dbgfs_force_enable=%d\ndbgfs_force=%d\nactual=%d\n"; 540 541 /* 542 * all values in format are boolean so the size of format is enough 543 * for holding the result string 544 */ 545 char buf[sizeof(format) + 1] = {}; 546 int len; 547 548 len = scnprintf(buf, sizeof(buf) - 1, format, 549 !!(mvmvif->low_latency & LOW_LATENCY_TRAFFIC), 550 !!(mvmvif->low_latency & LOW_LATENCY_DEBUGFS), 551 !!(mvmvif->low_latency & LOW_LATENCY_VCMD), 552 !!(mvmvif->low_latency & LOW_LATENCY_VIF_TYPE), 553 !!(mvmvif->low_latency & 554 LOW_LATENCY_DEBUGFS_FORCE_ENABLE), 555 !!(mvmvif->low_latency & LOW_LATENCY_DEBUGFS_FORCE), 556 !!(mvmvif->low_latency_actual)); 557 return simple_read_from_buffer(user_buf, count, ppos, buf, len); 558 } 559 560 static ssize_t iwl_dbgfs_uapsd_misbehaving_read(struct file *file, 561 char __user *user_buf, 562 size_t count, loff_t *ppos) 563 { 564 struct ieee80211_vif *vif = file->private_data; 565 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 566 char buf[20]; 567 int len; 568 569 #if defined(__linux__) 570 len = sprintf(buf, "%pM\n", mvmvif->uapsd_misbehaving_bssid); 571 #elif defined(__FreeBSD__) 572 len = sprintf(buf, "%6D\n", mvmvif->uapsd_misbehaving_bssid, ":"); 573 #endif 574 return simple_read_from_buffer(user_buf, count, ppos, buf, len); 575 } 576 577 static ssize_t iwl_dbgfs_uapsd_misbehaving_write(struct ieee80211_vif *vif, 578 char *buf, size_t count, 579 loff_t *ppos) 580 { 581 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 582 struct iwl_mvm *mvm = mvmvif->mvm; 583 bool ret; 584 585 mutex_lock(&mvm->mutex); 586 ret = mac_pton(buf, mvmvif->uapsd_misbehaving_bssid); 587 mutex_unlock(&mvm->mutex); 588 589 return ret ? count : -EINVAL; 590 } 591 592 static ssize_t iwl_dbgfs_rx_phyinfo_write(struct ieee80211_vif *vif, char *buf, 593 size_t count, loff_t *ppos) 594 { 595 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 596 struct iwl_mvm *mvm = mvmvif->mvm; 597 struct ieee80211_chanctx_conf *chanctx_conf; 598 struct iwl_mvm_phy_ctxt *phy_ctxt; 599 u16 value; 600 int ret; 601 602 ret = kstrtou16(buf, 0, &value); 603 if (ret) 604 return ret; 605 606 mutex_lock(&mvm->mutex); 607 rcu_read_lock(); 608 609 chanctx_conf = rcu_dereference(vif->bss_conf.chanctx_conf); 610 /* make sure the channel context is assigned */ 611 if (!chanctx_conf) { 612 rcu_read_unlock(); 613 mutex_unlock(&mvm->mutex); 614 return -EINVAL; 615 } 616 617 phy_ctxt = &mvm->phy_ctxts[*(u16 *)chanctx_conf->drv_priv]; 618 rcu_read_unlock(); 619 620 mvm->dbgfs_rx_phyinfo = value; 621 622 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chanctx_conf->min_def, 623 chanctx_conf->rx_chains_static, 624 chanctx_conf->rx_chains_dynamic); 625 mutex_unlock(&mvm->mutex); 626 627 return ret ?: count; 628 } 629 630 static ssize_t iwl_dbgfs_rx_phyinfo_read(struct file *file, 631 char __user *user_buf, 632 size_t count, loff_t *ppos) 633 { 634 struct ieee80211_vif *vif = file->private_data; 635 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 636 char buf[8]; 637 int len; 638 639 len = scnprintf(buf, sizeof(buf), "0x%04x\n", 640 mvmvif->mvm->dbgfs_rx_phyinfo); 641 642 return simple_read_from_buffer(user_buf, count, ppos, buf, len); 643 } 644 645 static void iwl_dbgfs_quota_check(void *data, u8 *mac, 646 struct ieee80211_vif *vif) 647 { 648 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 649 int *ret = data; 650 651 if (mvmvif->dbgfs_quota_min) 652 *ret = -EINVAL; 653 } 654 655 static ssize_t iwl_dbgfs_quota_min_write(struct ieee80211_vif *vif, char *buf, 656 size_t count, loff_t *ppos) 657 { 658 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 659 struct iwl_mvm *mvm = mvmvif->mvm; 660 u16 value; 661 int ret; 662 663 ret = kstrtou16(buf, 0, &value); 664 if (ret) 665 return ret; 666 667 if (value > 95) 668 return -EINVAL; 669 670 mutex_lock(&mvm->mutex); 671 672 mvmvif->dbgfs_quota_min = 0; 673 ieee80211_iterate_interfaces(mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 674 iwl_dbgfs_quota_check, &ret); 675 if (ret == 0) { 676 mvmvif->dbgfs_quota_min = value; 677 iwl_mvm_update_quotas(mvm, false, NULL); 678 } 679 mutex_unlock(&mvm->mutex); 680 681 return ret ?: count; 682 } 683 684 static ssize_t iwl_dbgfs_quota_min_read(struct file *file, 685 char __user *user_buf, 686 size_t count, loff_t *ppos) 687 { 688 struct ieee80211_vif *vif = file->private_data; 689 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 690 char buf[10]; 691 int len; 692 693 len = scnprintf(buf, sizeof(buf), "%d\n", mvmvif->dbgfs_quota_min); 694 695 return simple_read_from_buffer(user_buf, count, ppos, buf, len); 696 } 697 698 #define MVM_DEBUGFS_WRITE_FILE_OPS(name, bufsz) \ 699 _MVM_DEBUGFS_WRITE_FILE_OPS(name, bufsz, struct ieee80211_vif) 700 #define MVM_DEBUGFS_READ_WRITE_FILE_OPS(name, bufsz) \ 701 _MVM_DEBUGFS_READ_WRITE_FILE_OPS(name, bufsz, struct ieee80211_vif) 702 #define MVM_DEBUGFS_ADD_FILE_VIF(name, parent, mode) do { \ 703 debugfs_create_file(#name, mode, parent, vif, \ 704 &iwl_dbgfs_##name##_ops); \ 705 } while (0) 706 707 MVM_DEBUGFS_READ_FILE_OPS(mac_params); 708 MVM_DEBUGFS_READ_FILE_OPS(tx_pwr_lmt); 709 MVM_DEBUGFS_READ_WRITE_FILE_OPS(pm_params, 32); 710 MVM_DEBUGFS_READ_WRITE_FILE_OPS(bf_params, 256); 711 MVM_DEBUGFS_READ_WRITE_FILE_OPS(low_latency, 10); 712 MVM_DEBUGFS_WRITE_FILE_OPS(low_latency_force, 10); 713 MVM_DEBUGFS_READ_WRITE_FILE_OPS(uapsd_misbehaving, 20); 714 MVM_DEBUGFS_READ_WRITE_FILE_OPS(rx_phyinfo, 10); 715 MVM_DEBUGFS_READ_WRITE_FILE_OPS(quota_min, 32); 716 MVM_DEBUGFS_READ_FILE_OPS(os_device_timediff); 717 718 719 void iwl_mvm_vif_dbgfs_register(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 720 { 721 struct dentry *dbgfs_dir = vif->debugfs_dir; 722 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 723 #if defined(__linux__) 724 char buf[100]; 725 #endif 726 727 /* 728 * Check if debugfs directory already exist before creating it. 729 * This may happen when, for example, resetting hw or suspend-resume 730 */ 731 if (!dbgfs_dir || mvmvif->dbgfs_dir) 732 return; 733 734 mvmvif->dbgfs_dir = debugfs_create_dir("iwlmvm", dbgfs_dir); 735 if (IS_ERR_OR_NULL(mvmvif->dbgfs_dir)) { 736 IWL_ERR(mvm, "Failed to create debugfs directory under %pd\n", 737 dbgfs_dir); 738 return; 739 } 740 741 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM && 742 ((vif->type == NL80211_IFTYPE_STATION && !vif->p2p) || 743 (vif->type == NL80211_IFTYPE_STATION && vif->p2p))) 744 MVM_DEBUGFS_ADD_FILE_VIF(pm_params, mvmvif->dbgfs_dir, 0600); 745 746 MVM_DEBUGFS_ADD_FILE_VIF(tx_pwr_lmt, mvmvif->dbgfs_dir, 0400); 747 MVM_DEBUGFS_ADD_FILE_VIF(mac_params, mvmvif->dbgfs_dir, 0400); 748 MVM_DEBUGFS_ADD_FILE_VIF(low_latency, mvmvif->dbgfs_dir, 0600); 749 MVM_DEBUGFS_ADD_FILE_VIF(low_latency_force, mvmvif->dbgfs_dir, 0600); 750 MVM_DEBUGFS_ADD_FILE_VIF(uapsd_misbehaving, mvmvif->dbgfs_dir, 0600); 751 MVM_DEBUGFS_ADD_FILE_VIF(rx_phyinfo, mvmvif->dbgfs_dir, 0600); 752 MVM_DEBUGFS_ADD_FILE_VIF(quota_min, mvmvif->dbgfs_dir, 0600); 753 MVM_DEBUGFS_ADD_FILE_VIF(os_device_timediff, mvmvif->dbgfs_dir, 0400); 754 755 if (vif->type == NL80211_IFTYPE_STATION && !vif->p2p && 756 mvmvif == mvm->bf_allowed_vif) 757 MVM_DEBUGFS_ADD_FILE_VIF(bf_params, mvmvif->dbgfs_dir, 0600); 758 759 #if defined(__linux__) 760 /* 761 * Create symlink for convenience pointing to interface specific 762 * debugfs entries for the driver. For example, under 763 * /sys/kernel/debug/iwlwifi/0000\:02\:00.0/iwlmvm/ 764 * find 765 * netdev:wlan0 -> ../../../ieee80211/phy0/netdev:wlan0/iwlmvm/ 766 */ 767 snprintf(buf, 100, "../../../%pd3/%pd", 768 dbgfs_dir, 769 mvmvif->dbgfs_dir); 770 771 mvmvif->dbgfs_slink = debugfs_create_symlink(dbgfs_dir->d_name.name, 772 mvm->debugfs_dir, buf); 773 #endif 774 } 775 776 void iwl_mvm_vif_dbgfs_clean(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 777 { 778 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 779 780 debugfs_remove(mvmvif->dbgfs_slink); 781 mvmvif->dbgfs_slink = NULL; 782 783 debugfs_remove_recursive(mvmvif->dbgfs_dir); 784 mvmvif->dbgfs_dir = NULL; 785 } 786