1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
3 * Copyright (C) 2012-2014, 2018-2020 Intel Corporation
4 * Copyright (C) 2013-2015 Intel Mobile Communications GmbH
5 * Copyright (C) 2016-2017 Intel Deutschland GmbH
10 static void iwl_dbgfs_update_pm(struct iwl_mvm *mvm,
11 struct ieee80211_vif *vif,
12 enum iwl_dbgfs_pm_mask param, int val)
14 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
15 struct iwl_dbgfs_pm *dbgfs_pm = &mvmvif->dbgfs_pm;
17 dbgfs_pm->mask |= param;
20 case MVM_DEBUGFS_PM_KEEP_ALIVE: {
21 int dtimper = vif->bss_conf.dtim_period ?: 1;
22 int dtimper_msec = dtimper * vif->bss_conf.beacon_int;
24 IWL_DEBUG_POWER(mvm, "debugfs: set keep_alive= %d sec\n", val);
25 if (val * MSEC_PER_SEC < 3 * dtimper_msec)
27 "debugfs: keep alive period (%ld msec) is less than minimum required (%d msec)\n",
28 val * MSEC_PER_SEC, 3 * dtimper_msec);
29 dbgfs_pm->keep_alive_seconds = val;
32 case MVM_DEBUGFS_PM_SKIP_OVER_DTIM:
33 IWL_DEBUG_POWER(mvm, "skip_over_dtim %s\n",
34 val ? "enabled" : "disabled");
35 dbgfs_pm->skip_over_dtim = val;
37 case MVM_DEBUGFS_PM_SKIP_DTIM_PERIODS:
38 IWL_DEBUG_POWER(mvm, "skip_dtim_periods=%d\n", val);
39 dbgfs_pm->skip_dtim_periods = val;
41 case MVM_DEBUGFS_PM_RX_DATA_TIMEOUT:
42 IWL_DEBUG_POWER(mvm, "rx_data_timeout=%d\n", val);
43 dbgfs_pm->rx_data_timeout = val;
45 case MVM_DEBUGFS_PM_TX_DATA_TIMEOUT:
46 IWL_DEBUG_POWER(mvm, "tx_data_timeout=%d\n", val);
47 dbgfs_pm->tx_data_timeout = val;
49 case MVM_DEBUGFS_PM_LPRX_ENA:
50 IWL_DEBUG_POWER(mvm, "lprx %s\n", val ? "enabled" : "disabled");
51 dbgfs_pm->lprx_ena = val;
53 case MVM_DEBUGFS_PM_LPRX_RSSI_THRESHOLD:
54 IWL_DEBUG_POWER(mvm, "lprx_rssi_threshold=%d\n", val);
55 dbgfs_pm->lprx_rssi_threshold = val;
57 case MVM_DEBUGFS_PM_SNOOZE_ENABLE:
58 IWL_DEBUG_POWER(mvm, "snooze_enable=%d\n", val);
59 dbgfs_pm->snooze_ena = val;
61 case MVM_DEBUGFS_PM_UAPSD_MISBEHAVING:
62 IWL_DEBUG_POWER(mvm, "uapsd_misbehaving_enable=%d\n", val);
63 dbgfs_pm->uapsd_misbehaving = val;
65 case MVM_DEBUGFS_PM_USE_PS_POLL:
66 IWL_DEBUG_POWER(mvm, "use_ps_poll=%d\n", val);
67 dbgfs_pm->use_ps_poll = val;
72 static ssize_t iwl_dbgfs_pm_params_write(struct ieee80211_vif *vif, char *buf,
73 size_t count, loff_t *ppos)
75 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
76 struct iwl_mvm *mvm = mvmvif->mvm;
77 enum iwl_dbgfs_pm_mask param;
80 if (!strncmp("keep_alive=", buf, 11)) {
81 if (sscanf(buf + 11, "%d", &val) != 1)
83 param = MVM_DEBUGFS_PM_KEEP_ALIVE;
84 } else if (!strncmp("skip_over_dtim=", buf, 15)) {
85 if (sscanf(buf + 15, "%d", &val) != 1)
87 param = MVM_DEBUGFS_PM_SKIP_OVER_DTIM;
88 } else if (!strncmp("skip_dtim_periods=", buf, 18)) {
89 if (sscanf(buf + 18, "%d", &val) != 1)
91 param = MVM_DEBUGFS_PM_SKIP_DTIM_PERIODS;
92 } else if (!strncmp("rx_data_timeout=", buf, 16)) {
93 if (sscanf(buf + 16, "%d", &val) != 1)
95 param = MVM_DEBUGFS_PM_RX_DATA_TIMEOUT;
96 } else if (!strncmp("tx_data_timeout=", buf, 16)) {
97 if (sscanf(buf + 16, "%d", &val) != 1)
99 param = MVM_DEBUGFS_PM_TX_DATA_TIMEOUT;
100 } else if (!strncmp("lprx=", buf, 5)) {
101 if (sscanf(buf + 5, "%d", &val) != 1)
103 param = MVM_DEBUGFS_PM_LPRX_ENA;
104 } else if (!strncmp("lprx_rssi_threshold=", buf, 20)) {
105 if (sscanf(buf + 20, "%d", &val) != 1)
107 if (val > POWER_LPRX_RSSI_THRESHOLD_MAX || val <
108 POWER_LPRX_RSSI_THRESHOLD_MIN)
110 param = MVM_DEBUGFS_PM_LPRX_RSSI_THRESHOLD;
111 } else if (!strncmp("snooze_enable=", buf, 14)) {
112 if (sscanf(buf + 14, "%d", &val) != 1)
114 param = MVM_DEBUGFS_PM_SNOOZE_ENABLE;
115 } else if (!strncmp("uapsd_misbehaving=", buf, 18)) {
116 if (sscanf(buf + 18, "%d", &val) != 1)
118 param = MVM_DEBUGFS_PM_UAPSD_MISBEHAVING;
119 } else if (!strncmp("use_ps_poll=", buf, 12)) {
120 if (sscanf(buf + 12, "%d", &val) != 1)
122 param = MVM_DEBUGFS_PM_USE_PS_POLL;
127 mutex_lock(&mvm->mutex);
128 iwl_dbgfs_update_pm(mvm, vif, param, val);
129 ret = iwl_mvm_power_update_mac(mvm);
130 mutex_unlock(&mvm->mutex);
135 static ssize_t iwl_dbgfs_tx_pwr_lmt_read(struct file *file,
136 char __user *user_buf,
137 size_t count, loff_t *ppos)
139 struct ieee80211_vif *vif = file->private_data;
141 int bufsz = sizeof(buf);
144 pos = scnprintf(buf, bufsz, "bss limit = %d\n",
145 vif->bss_conf.txpower);
147 return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
150 static ssize_t iwl_dbgfs_pm_params_read(struct file *file,
151 char __user *user_buf,
152 size_t count, loff_t *ppos)
154 struct ieee80211_vif *vif = file->private_data;
155 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
156 struct iwl_mvm *mvm = mvmvif->mvm;
158 int bufsz = sizeof(buf);
161 pos = iwl_mvm_power_mac_dbgfs_read(mvm, vif, buf, bufsz);
163 return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
166 static ssize_t iwl_dbgfs_mac_params_read(struct file *file,
167 char __user *user_buf,
168 size_t count, loff_t *ppos)
170 struct ieee80211_vif *vif = file->private_data;
171 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
172 struct iwl_mvm *mvm = mvmvif->mvm;
174 struct ieee80211_chanctx_conf *chanctx_conf;
176 int bufsz = sizeof(buf);
180 mutex_lock(&mvm->mutex);
182 ap_sta_id = mvmvif->ap_sta_id;
184 switch (ieee80211_vif_type_p2p(vif)) {
185 case NL80211_IFTYPE_ADHOC:
186 pos += scnprintf(buf+pos, bufsz-pos, "type: ibss\n");
188 case NL80211_IFTYPE_STATION:
189 pos += scnprintf(buf+pos, bufsz-pos, "type: bss\n");
191 case NL80211_IFTYPE_AP:
192 pos += scnprintf(buf+pos, bufsz-pos, "type: ap\n");
194 case NL80211_IFTYPE_P2P_CLIENT:
195 pos += scnprintf(buf+pos, bufsz-pos, "type: p2p client\n");
197 case NL80211_IFTYPE_P2P_GO:
198 pos += scnprintf(buf+pos, bufsz-pos, "type: p2p go\n");
200 case NL80211_IFTYPE_P2P_DEVICE:
201 pos += scnprintf(buf+pos, bufsz-pos, "type: p2p dev\n");
207 pos += scnprintf(buf+pos, bufsz-pos, "mac id/color: %d / %d\n",
208 mvmvif->id, mvmvif->color);
209 pos += scnprintf(buf+pos, bufsz-pos, "bssid: %pM\n",
210 vif->bss_conf.bssid);
211 pos += scnprintf(buf+pos, bufsz-pos, "Load: %d\n",
212 mvm->tcm.result.load[mvmvif->id]);
213 pos += scnprintf(buf+pos, bufsz-pos, "QoS:\n");
214 for (i = 0; i < ARRAY_SIZE(mvmvif->queue_params); i++)
215 pos += scnprintf(buf+pos, bufsz-pos,
216 "\t%d: txop:%d - cw_min:%d - cw_max = %d - aifs = %d upasd = %d\n",
217 i, mvmvif->queue_params[i].txop,
218 mvmvif->queue_params[i].cw_min,
219 mvmvif->queue_params[i].cw_max,
220 mvmvif->queue_params[i].aifs,
221 mvmvif->queue_params[i].uapsd);
223 if (vif->type == NL80211_IFTYPE_STATION &&
224 ap_sta_id != IWL_MVM_INVALID_STA) {
225 struct iwl_mvm_sta *mvm_sta;
227 mvm_sta = iwl_mvm_sta_from_staid_protected(mvm, ap_sta_id);
229 pos += scnprintf(buf+pos, bufsz-pos,
230 "ap_sta_id %d - reduced Tx power %d\n",
232 mvm_sta->bt_reduced_txpower);
237 chanctx_conf = rcu_dereference(vif->chanctx_conf);
239 pos += scnprintf(buf+pos, bufsz-pos,
240 "idle rx chains %d, active rx chains: %d\n",
241 chanctx_conf->rx_chains_static,
242 chanctx_conf->rx_chains_dynamic);
245 mutex_unlock(&mvm->mutex);
247 return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
250 static void iwl_dbgfs_update_bf(struct ieee80211_vif *vif,
251 enum iwl_dbgfs_bf_mask param, int value)
253 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
254 struct iwl_dbgfs_bf *dbgfs_bf = &mvmvif->dbgfs_bf;
256 dbgfs_bf->mask |= param;
259 case MVM_DEBUGFS_BF_ENERGY_DELTA:
260 dbgfs_bf->bf_energy_delta = value;
262 case MVM_DEBUGFS_BF_ROAMING_ENERGY_DELTA:
263 dbgfs_bf->bf_roaming_energy_delta = value;
265 case MVM_DEBUGFS_BF_ROAMING_STATE:
266 dbgfs_bf->bf_roaming_state = value;
268 case MVM_DEBUGFS_BF_TEMP_THRESHOLD:
269 dbgfs_bf->bf_temp_threshold = value;
271 case MVM_DEBUGFS_BF_TEMP_FAST_FILTER:
272 dbgfs_bf->bf_temp_fast_filter = value;
274 case MVM_DEBUGFS_BF_TEMP_SLOW_FILTER:
275 dbgfs_bf->bf_temp_slow_filter = value;
277 case MVM_DEBUGFS_BF_ENABLE_BEACON_FILTER:
278 dbgfs_bf->bf_enable_beacon_filter = value;
280 case MVM_DEBUGFS_BF_DEBUG_FLAG:
281 dbgfs_bf->bf_debug_flag = value;
283 case MVM_DEBUGFS_BF_ESCAPE_TIMER:
284 dbgfs_bf->bf_escape_timer = value;
286 case MVM_DEBUGFS_BA_ENABLE_BEACON_ABORT:
287 dbgfs_bf->ba_enable_beacon_abort = value;
289 case MVM_DEBUGFS_BA_ESCAPE_TIMER:
290 dbgfs_bf->ba_escape_timer = value;
295 static ssize_t iwl_dbgfs_bf_params_write(struct ieee80211_vif *vif, char *buf,
296 size_t count, loff_t *ppos)
298 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
299 struct iwl_mvm *mvm = mvmvif->mvm;
300 enum iwl_dbgfs_bf_mask param;
303 if (!strncmp("bf_energy_delta=", buf, 16)) {
304 if (sscanf(buf+16, "%d", &value) != 1)
306 if (value < IWL_BF_ENERGY_DELTA_MIN ||
307 value > IWL_BF_ENERGY_DELTA_MAX)
309 param = MVM_DEBUGFS_BF_ENERGY_DELTA;
310 } else if (!strncmp("bf_roaming_energy_delta=", buf, 24)) {
311 if (sscanf(buf+24, "%d", &value) != 1)
313 if (value < IWL_BF_ROAMING_ENERGY_DELTA_MIN ||
314 value > IWL_BF_ROAMING_ENERGY_DELTA_MAX)
316 param = MVM_DEBUGFS_BF_ROAMING_ENERGY_DELTA;
317 } else if (!strncmp("bf_roaming_state=", buf, 17)) {
318 if (sscanf(buf+17, "%d", &value) != 1)
320 if (value < IWL_BF_ROAMING_STATE_MIN ||
321 value > IWL_BF_ROAMING_STATE_MAX)
323 param = MVM_DEBUGFS_BF_ROAMING_STATE;
324 } else if (!strncmp("bf_temp_threshold=", buf, 18)) {
325 if (sscanf(buf+18, "%d", &value) != 1)
327 if (value < IWL_BF_TEMP_THRESHOLD_MIN ||
328 value > IWL_BF_TEMP_THRESHOLD_MAX)
330 param = MVM_DEBUGFS_BF_TEMP_THRESHOLD;
331 } else if (!strncmp("bf_temp_fast_filter=", buf, 20)) {
332 if (sscanf(buf+20, "%d", &value) != 1)
334 if (value < IWL_BF_TEMP_FAST_FILTER_MIN ||
335 value > IWL_BF_TEMP_FAST_FILTER_MAX)
337 param = MVM_DEBUGFS_BF_TEMP_FAST_FILTER;
338 } else if (!strncmp("bf_temp_slow_filter=", buf, 20)) {
339 if (sscanf(buf+20, "%d", &value) != 1)
341 if (value < IWL_BF_TEMP_SLOW_FILTER_MIN ||
342 value > IWL_BF_TEMP_SLOW_FILTER_MAX)
344 param = MVM_DEBUGFS_BF_TEMP_SLOW_FILTER;
345 } else if (!strncmp("bf_enable_beacon_filter=", buf, 24)) {
346 if (sscanf(buf+24, "%d", &value) != 1)
348 if (value < 0 || value > 1)
350 param = MVM_DEBUGFS_BF_ENABLE_BEACON_FILTER;
351 } else if (!strncmp("bf_debug_flag=", buf, 14)) {
352 if (sscanf(buf+14, "%d", &value) != 1)
354 if (value < 0 || value > 1)
356 param = MVM_DEBUGFS_BF_DEBUG_FLAG;
357 } else if (!strncmp("bf_escape_timer=", buf, 16)) {
358 if (sscanf(buf+16, "%d", &value) != 1)
360 if (value < IWL_BF_ESCAPE_TIMER_MIN ||
361 value > IWL_BF_ESCAPE_TIMER_MAX)
363 param = MVM_DEBUGFS_BF_ESCAPE_TIMER;
364 } else if (!strncmp("ba_escape_timer=", buf, 16)) {
365 if (sscanf(buf+16, "%d", &value) != 1)
367 if (value < IWL_BA_ESCAPE_TIMER_MIN ||
368 value > IWL_BA_ESCAPE_TIMER_MAX)
370 param = MVM_DEBUGFS_BA_ESCAPE_TIMER;
371 } else if (!strncmp("ba_enable_beacon_abort=", buf, 23)) {
372 if (sscanf(buf+23, "%d", &value) != 1)
374 if (value < 0 || value > 1)
376 param = MVM_DEBUGFS_BA_ENABLE_BEACON_ABORT;
381 mutex_lock(&mvm->mutex);
382 iwl_dbgfs_update_bf(vif, param, value);
383 if (param == MVM_DEBUGFS_BF_ENABLE_BEACON_FILTER && !value)
384 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
386 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
387 mutex_unlock(&mvm->mutex);
392 static ssize_t iwl_dbgfs_bf_params_read(struct file *file,
393 char __user *user_buf,
394 size_t count, loff_t *ppos)
396 struct ieee80211_vif *vif = file->private_data;
397 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
400 const size_t bufsz = sizeof(buf);
401 struct iwl_beacon_filter_cmd cmd = {
402 IWL_BF_CMD_CONFIG_DEFAULTS,
403 .bf_enable_beacon_filter =
404 cpu_to_le32(IWL_BF_ENABLE_BEACON_FILTER_DEFAULT),
405 .ba_enable_beacon_abort =
406 cpu_to_le32(IWL_BA_ENABLE_BEACON_ABORT_DEFAULT),
409 iwl_mvm_beacon_filter_debugfs_parameters(vif, &cmd);
410 if (mvmvif->bf_data.bf_enabled)
411 cmd.bf_enable_beacon_filter = cpu_to_le32(1);
413 cmd.bf_enable_beacon_filter = 0;
415 pos += scnprintf(buf+pos, bufsz-pos, "bf_energy_delta = %d\n",
416 le32_to_cpu(cmd.bf_energy_delta));
417 pos += scnprintf(buf+pos, bufsz-pos, "bf_roaming_energy_delta = %d\n",
418 le32_to_cpu(cmd.bf_roaming_energy_delta));
419 pos += scnprintf(buf+pos, bufsz-pos, "bf_roaming_state = %d\n",
420 le32_to_cpu(cmd.bf_roaming_state));
421 pos += scnprintf(buf+pos, bufsz-pos, "bf_temp_threshold = %d\n",
422 le32_to_cpu(cmd.bf_temp_threshold));
423 pos += scnprintf(buf+pos, bufsz-pos, "bf_temp_fast_filter = %d\n",
424 le32_to_cpu(cmd.bf_temp_fast_filter));
425 pos += scnprintf(buf+pos, bufsz-pos, "bf_temp_slow_filter = %d\n",
426 le32_to_cpu(cmd.bf_temp_slow_filter));
427 pos += scnprintf(buf+pos, bufsz-pos, "bf_enable_beacon_filter = %d\n",
428 le32_to_cpu(cmd.bf_enable_beacon_filter));
429 pos += scnprintf(buf+pos, bufsz-pos, "bf_debug_flag = %d\n",
430 le32_to_cpu(cmd.bf_debug_flag));
431 pos += scnprintf(buf+pos, bufsz-pos, "bf_escape_timer = %d\n",
432 le32_to_cpu(cmd.bf_escape_timer));
433 pos += scnprintf(buf+pos, bufsz-pos, "ba_escape_timer = %d\n",
434 le32_to_cpu(cmd.ba_escape_timer));
435 pos += scnprintf(buf+pos, bufsz-pos, "ba_enable_beacon_abort = %d\n",
436 le32_to_cpu(cmd.ba_enable_beacon_abort));
438 return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
441 static inline char *iwl_dbgfs_is_match(char *name, char *buf)
443 int len = strlen(name);
445 return !strncmp(name, buf, len) ? buf + len : NULL;
448 static ssize_t iwl_dbgfs_os_device_timediff_read(struct file *file,
449 char __user *user_buf,
450 size_t count, loff_t *ppos)
452 struct ieee80211_vif *vif = file->private_data;
453 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
454 struct iwl_mvm *mvm = mvmvif->mvm;
459 const size_t bufsz = sizeof(buf);
462 iwl_mvm_get_sync_time(mvm, &curr_gp2, &curr_os);
463 do_div(curr_os, NSEC_PER_USEC);
464 diff = curr_os - curr_gp2;
465 pos += scnprintf(buf + pos, bufsz - pos, "diff=%lld\n", diff);
467 return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
470 static ssize_t iwl_dbgfs_low_latency_write(struct ieee80211_vif *vif, char *buf,
471 size_t count, loff_t *ppos)
473 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
474 struct iwl_mvm *mvm = mvmvif->mvm;
478 ret = kstrtou8(buf, 0, &value);
484 mutex_lock(&mvm->mutex);
485 iwl_mvm_update_low_latency(mvm, vif, value, LOW_LATENCY_DEBUGFS);
486 mutex_unlock(&mvm->mutex);
492 iwl_dbgfs_low_latency_force_write(struct ieee80211_vif *vif, char *buf,
493 size_t count, loff_t *ppos)
495 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
496 struct iwl_mvm *mvm = mvmvif->mvm;
500 ret = kstrtou8(buf, 0, &value);
504 if (value > NUM_LOW_LATENCY_FORCE)
507 mutex_lock(&mvm->mutex);
508 if (value == LOW_LATENCY_FORCE_UNSET) {
509 iwl_mvm_update_low_latency(mvm, vif, false,
510 LOW_LATENCY_DEBUGFS_FORCE);
511 iwl_mvm_update_low_latency(mvm, vif, false,
512 LOW_LATENCY_DEBUGFS_FORCE_ENABLE);
514 iwl_mvm_update_low_latency(mvm, vif,
515 value == LOW_LATENCY_FORCE_ON,
516 LOW_LATENCY_DEBUGFS_FORCE);
517 iwl_mvm_update_low_latency(mvm, vif, true,
518 LOW_LATENCY_DEBUGFS_FORCE_ENABLE);
520 mutex_unlock(&mvm->mutex);
524 static ssize_t iwl_dbgfs_low_latency_read(struct file *file,
525 char __user *user_buf,
526 size_t count, loff_t *ppos)
528 struct ieee80211_vif *vif = file->private_data;
529 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
530 char format[] = "traffic=%d\ndbgfs=%d\nvcmd=%d\nvif_type=%d\n"
531 "dbgfs_force_enable=%d\ndbgfs_force=%d\nactual=%d\n";
534 * all values in format are boolean so the size of format is enough
535 * for holding the result string
537 char buf[sizeof(format) + 1] = {};
540 len = scnprintf(buf, sizeof(buf) - 1, format,
541 !!(mvmvif->low_latency & LOW_LATENCY_TRAFFIC),
542 !!(mvmvif->low_latency & LOW_LATENCY_DEBUGFS),
543 !!(mvmvif->low_latency & LOW_LATENCY_VCMD),
544 !!(mvmvif->low_latency & LOW_LATENCY_VIF_TYPE),
545 !!(mvmvif->low_latency &
546 LOW_LATENCY_DEBUGFS_FORCE_ENABLE),
547 !!(mvmvif->low_latency & LOW_LATENCY_DEBUGFS_FORCE),
548 !!(mvmvif->low_latency_actual));
549 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
552 static ssize_t iwl_dbgfs_uapsd_misbehaving_read(struct file *file,
553 char __user *user_buf,
554 size_t count, loff_t *ppos)
556 struct ieee80211_vif *vif = file->private_data;
557 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
561 len = sprintf(buf, "%pM\n", mvmvif->uapsd_misbehaving_bssid);
562 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
565 static ssize_t iwl_dbgfs_uapsd_misbehaving_write(struct ieee80211_vif *vif,
566 char *buf, size_t count,
569 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
570 struct iwl_mvm *mvm = mvmvif->mvm;
573 mutex_lock(&mvm->mutex);
574 ret = mac_pton(buf, mvmvif->uapsd_misbehaving_bssid);
575 mutex_unlock(&mvm->mutex);
577 return ret ? count : -EINVAL;
580 static ssize_t iwl_dbgfs_rx_phyinfo_write(struct ieee80211_vif *vif, char *buf,
581 size_t count, loff_t *ppos)
583 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
584 struct iwl_mvm *mvm = mvmvif->mvm;
585 struct ieee80211_chanctx_conf *chanctx_conf;
586 struct iwl_mvm_phy_ctxt *phy_ctxt;
590 ret = kstrtou16(buf, 0, &value);
594 mutex_lock(&mvm->mutex);
597 chanctx_conf = rcu_dereference(vif->chanctx_conf);
598 /* make sure the channel context is assigned */
601 mutex_unlock(&mvm->mutex);
605 phy_ctxt = &mvm->phy_ctxts[*(u16 *)chanctx_conf->drv_priv];
608 mvm->dbgfs_rx_phyinfo = value;
610 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chanctx_conf->min_def,
611 chanctx_conf->rx_chains_static,
612 chanctx_conf->rx_chains_dynamic);
613 mutex_unlock(&mvm->mutex);
618 static ssize_t iwl_dbgfs_rx_phyinfo_read(struct file *file,
619 char __user *user_buf,
620 size_t count, loff_t *ppos)
622 struct ieee80211_vif *vif = file->private_data;
623 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
627 len = scnprintf(buf, sizeof(buf), "0x%04x\n",
628 mvmvif->mvm->dbgfs_rx_phyinfo);
630 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
633 static void iwl_dbgfs_quota_check(void *data, u8 *mac,
634 struct ieee80211_vif *vif)
636 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
639 if (mvmvif->dbgfs_quota_min)
643 static ssize_t iwl_dbgfs_quota_min_write(struct ieee80211_vif *vif, char *buf,
644 size_t count, loff_t *ppos)
646 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
647 struct iwl_mvm *mvm = mvmvif->mvm;
651 ret = kstrtou16(buf, 0, &value);
658 mutex_lock(&mvm->mutex);
660 mvmvif->dbgfs_quota_min = 0;
661 ieee80211_iterate_interfaces(mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
662 iwl_dbgfs_quota_check, &ret);
664 mvmvif->dbgfs_quota_min = value;
665 iwl_mvm_update_quotas(mvm, false, NULL);
667 mutex_unlock(&mvm->mutex);
672 static ssize_t iwl_dbgfs_quota_min_read(struct file *file,
673 char __user *user_buf,
674 size_t count, loff_t *ppos)
676 struct ieee80211_vif *vif = file->private_data;
677 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
681 len = scnprintf(buf, sizeof(buf), "%d\n", mvmvif->dbgfs_quota_min);
683 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
686 #define MVM_DEBUGFS_WRITE_FILE_OPS(name, bufsz) \
687 _MVM_DEBUGFS_WRITE_FILE_OPS(name, bufsz, struct ieee80211_vif)
688 #define MVM_DEBUGFS_READ_WRITE_FILE_OPS(name, bufsz) \
689 _MVM_DEBUGFS_READ_WRITE_FILE_OPS(name, bufsz, struct ieee80211_vif)
690 #define MVM_DEBUGFS_ADD_FILE_VIF(name, parent, mode) do { \
691 debugfs_create_file(#name, mode, parent, vif, \
692 &iwl_dbgfs_##name##_ops); \
695 MVM_DEBUGFS_READ_FILE_OPS(mac_params);
696 MVM_DEBUGFS_READ_FILE_OPS(tx_pwr_lmt);
697 MVM_DEBUGFS_READ_WRITE_FILE_OPS(pm_params, 32);
698 MVM_DEBUGFS_READ_WRITE_FILE_OPS(bf_params, 256);
699 MVM_DEBUGFS_READ_WRITE_FILE_OPS(low_latency, 10);
700 MVM_DEBUGFS_WRITE_FILE_OPS(low_latency_force, 10);
701 MVM_DEBUGFS_READ_WRITE_FILE_OPS(uapsd_misbehaving, 20);
702 MVM_DEBUGFS_READ_WRITE_FILE_OPS(rx_phyinfo, 10);
703 MVM_DEBUGFS_READ_WRITE_FILE_OPS(quota_min, 32);
704 MVM_DEBUGFS_READ_FILE_OPS(os_device_timediff);
707 void iwl_mvm_vif_dbgfs_register(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
709 struct dentry *dbgfs_dir = vif->debugfs_dir;
710 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
714 * Check if debugfs directory already exist before creating it.
715 * This may happen when, for example, resetting hw or suspend-resume
717 if (!dbgfs_dir || mvmvif->dbgfs_dir)
720 mvmvif->dbgfs_dir = debugfs_create_dir("iwlmvm", dbgfs_dir);
721 if (IS_ERR_OR_NULL(mvmvif->dbgfs_dir)) {
722 IWL_ERR(mvm, "Failed to create debugfs directory under %pd\n",
727 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM &&
728 ((vif->type == NL80211_IFTYPE_STATION && !vif->p2p) ||
729 (vif->type == NL80211_IFTYPE_STATION && vif->p2p)))
730 MVM_DEBUGFS_ADD_FILE_VIF(pm_params, mvmvif->dbgfs_dir, 0600);
732 MVM_DEBUGFS_ADD_FILE_VIF(tx_pwr_lmt, mvmvif->dbgfs_dir, 0400);
733 MVM_DEBUGFS_ADD_FILE_VIF(mac_params, mvmvif->dbgfs_dir, 0400);
734 MVM_DEBUGFS_ADD_FILE_VIF(low_latency, mvmvif->dbgfs_dir, 0600);
735 MVM_DEBUGFS_ADD_FILE_VIF(low_latency_force, mvmvif->dbgfs_dir, 0600);
736 MVM_DEBUGFS_ADD_FILE_VIF(uapsd_misbehaving, mvmvif->dbgfs_dir, 0600);
737 MVM_DEBUGFS_ADD_FILE_VIF(rx_phyinfo, mvmvif->dbgfs_dir, 0600);
738 MVM_DEBUGFS_ADD_FILE_VIF(quota_min, mvmvif->dbgfs_dir, 0600);
739 MVM_DEBUGFS_ADD_FILE_VIF(os_device_timediff, mvmvif->dbgfs_dir, 0400);
741 if (vif->type == NL80211_IFTYPE_STATION && !vif->p2p &&
742 mvmvif == mvm->bf_allowed_vif)
743 MVM_DEBUGFS_ADD_FILE_VIF(bf_params, mvmvif->dbgfs_dir, 0600);
746 * Create symlink for convenience pointing to interface specific
747 * debugfs entries for the driver. For example, under
748 * /sys/kernel/debug/iwlwifi/0000\:02\:00.0/iwlmvm/
750 * netdev:wlan0 -> ../../../ieee80211/phy0/netdev:wlan0/iwlmvm/
752 snprintf(buf, 100, "../../../%pd3/%pd",
756 mvmvif->dbgfs_slink = debugfs_create_symlink(dbgfs_dir->d_name.name,
757 mvm->debugfs_dir, buf);
760 void iwl_mvm_vif_dbgfs_clean(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
762 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
764 debugfs_remove(mvmvif->dbgfs_slink);
765 mvmvif->dbgfs_slink = NULL;
767 debugfs_remove_recursive(mvmvif->dbgfs_dir);
768 mvmvif->dbgfs_dir = NULL;