1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
2 /*
3 * Copyright (C) 2012-2014, 2018-2023 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
iwl_dbgfs_update_pm(struct iwl_mvm * mvm,struct ieee80211_vif * vif,enum iwl_dbgfs_pm_mask param,int val)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)
13 {
14 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
15 struct iwl_dbgfs_pm *dbgfs_pm = &mvmvif->dbgfs_pm;
16
17 dbgfs_pm->mask |= param;
18
19 switch (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;
23
24 IWL_DEBUG_POWER(mvm, "debugfs: set keep_alive= %d sec\n", val);
25 if (val * MSEC_PER_SEC < 3 * dtimper_msec)
26 IWL_WARN(mvm,
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;
30 break;
31 }
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;
36 break;
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;
40 break;
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;
44 break;
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;
48 break;
49 case MVM_DEBUGFS_PM_LPRX_ENA:
50 IWL_DEBUG_POWER(mvm, "lprx %s\n", val ? "enabled" : "disabled");
51 dbgfs_pm->lprx_ena = val;
52 break;
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;
56 break;
57 case MVM_DEBUGFS_PM_SNOOZE_ENABLE:
58 IWL_DEBUG_POWER(mvm, "snooze_enable=%d\n", val);
59 dbgfs_pm->snooze_ena = val;
60 break;
61 case MVM_DEBUGFS_PM_UAPSD_MISBEHAVING:
62 IWL_DEBUG_POWER(mvm, "uapsd_misbehaving_enable=%d\n", val);
63 dbgfs_pm->uapsd_misbehaving = val;
64 break;
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;
68 break;
69 }
70 }
71
iwl_dbgfs_pm_params_write(struct ieee80211_vif * vif,char * buf,size_t count,loff_t * ppos)72 static ssize_t iwl_dbgfs_pm_params_write(struct ieee80211_vif *vif, char *buf,
73 size_t count, loff_t *ppos)
74 {
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;
78 int val, ret;
79
80 if (!strncmp("keep_alive=", buf, 11)) {
81 if (sscanf(buf + 11, "%d", &val) != 1)
82 return -EINVAL;
83 param = MVM_DEBUGFS_PM_KEEP_ALIVE;
84 } else if (!strncmp("skip_over_dtim=", buf, 15)) {
85 if (sscanf(buf + 15, "%d", &val) != 1)
86 return -EINVAL;
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)
90 return -EINVAL;
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)
94 return -EINVAL;
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)
98 return -EINVAL;
99 param = MVM_DEBUGFS_PM_TX_DATA_TIMEOUT;
100 } else if (!strncmp("lprx=", buf, 5)) {
101 if (sscanf(buf + 5, "%d", &val) != 1)
102 return -EINVAL;
103 param = MVM_DEBUGFS_PM_LPRX_ENA;
104 } else if (!strncmp("lprx_rssi_threshold=", buf, 20)) {
105 if (sscanf(buf + 20, "%d", &val) != 1)
106 return -EINVAL;
107 if (val > POWER_LPRX_RSSI_THRESHOLD_MAX || val <
108 POWER_LPRX_RSSI_THRESHOLD_MIN)
109 return -EINVAL;
110 param = MVM_DEBUGFS_PM_LPRX_RSSI_THRESHOLD;
111 } else if (!strncmp("snooze_enable=", buf, 14)) {
112 if (sscanf(buf + 14, "%d", &val) != 1)
113 return -EINVAL;
114 param = MVM_DEBUGFS_PM_SNOOZE_ENABLE;
115 } else if (!strncmp("uapsd_misbehaving=", buf, 18)) {
116 if (sscanf(buf + 18, "%d", &val) != 1)
117 return -EINVAL;
118 param = MVM_DEBUGFS_PM_UAPSD_MISBEHAVING;
119 } else if (!strncmp("use_ps_poll=", buf, 12)) {
120 if (sscanf(buf + 12, "%d", &val) != 1)
121 return -EINVAL;
122 param = MVM_DEBUGFS_PM_USE_PS_POLL;
123 } else {
124 return -EINVAL;
125 }
126
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);
131
132 return ret ?: count;
133 }
134
iwl_dbgfs_tx_pwr_lmt_read(struct file * file,char __user * user_buf,size_t count,loff_t * ppos)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)
138 {
139 struct ieee80211_vif *vif = file->private_data;
140 char buf[64];
141 int bufsz = sizeof(buf);
142 int pos;
143
144 pos = scnprintf(buf, bufsz, "bss limit = %d\n",
145 vif->bss_conf.txpower);
146
147 return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
148 }
149
iwl_dbgfs_pm_params_read(struct file * file,char __user * user_buf,size_t count,loff_t * ppos)150 static ssize_t iwl_dbgfs_pm_params_read(struct file *file,
151 char __user *user_buf,
152 size_t count, loff_t *ppos)
153 {
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;
157 char buf[512];
158 int bufsz = sizeof(buf);
159 int pos;
160
161 pos = iwl_mvm_power_mac_dbgfs_read(mvm, vif, buf, bufsz);
162
163 return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
164 }
165
iwl_dbgfs_mac_params_read(struct file * file,char __user * user_buf,size_t count,loff_t * ppos)166 static ssize_t iwl_dbgfs_mac_params_read(struct file *file,
167 char __user *user_buf,
168 size_t count, loff_t *ppos)
169 {
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;
173 u8 ap_sta_id;
174 struct ieee80211_chanctx_conf *chanctx_conf;
175 char buf[512];
176 int bufsz = sizeof(buf);
177 int pos = 0;
178 int i;
179
180 mutex_lock(&mvm->mutex);
181
182 ap_sta_id = mvmvif->deflink.ap_sta_id;
183
184 switch (ieee80211_vif_type_p2p(vif)) {
185 case NL80211_IFTYPE_ADHOC:
186 pos += scnprintf(buf+pos, bufsz-pos, "type: ibss\n");
187 break;
188 case NL80211_IFTYPE_STATION:
189 pos += scnprintf(buf+pos, bufsz-pos, "type: bss\n");
190 break;
191 case NL80211_IFTYPE_AP:
192 pos += scnprintf(buf+pos, bufsz-pos, "type: ap\n");
193 break;
194 case NL80211_IFTYPE_P2P_CLIENT:
195 pos += scnprintf(buf+pos, bufsz-pos, "type: p2p client\n");
196 break;
197 case NL80211_IFTYPE_P2P_GO:
198 pos += scnprintf(buf+pos, bufsz-pos, "type: p2p go\n");
199 break;
200 case NL80211_IFTYPE_P2P_DEVICE:
201 pos += scnprintf(buf+pos, bufsz-pos, "type: p2p dev\n");
202 break;
203 default:
204 break;
205 }
206
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->deflink.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->deflink.queue_params[i].txop,
218 mvmvif->deflink.queue_params[i].cw_min,
219 mvmvif->deflink.queue_params[i].cw_max,
220 mvmvif->deflink.queue_params[i].aifs,
221 mvmvif->deflink.queue_params[i].uapsd);
222
223 if (vif->type == NL80211_IFTYPE_STATION &&
224 ap_sta_id != IWL_MVM_INVALID_STA) {
225 struct iwl_mvm_sta *mvm_sta;
226
227 mvm_sta = iwl_mvm_sta_from_staid_protected(mvm, ap_sta_id);
228 if (mvm_sta) {
229 pos += scnprintf(buf+pos, bufsz-pos,
230 "ap_sta_id %d - reduced Tx power %d\n",
231 ap_sta_id,
232 mvm_sta->bt_reduced_txpower);
233 }
234 }
235
236 rcu_read_lock();
237 chanctx_conf = rcu_dereference(vif->bss_conf.chanctx_conf);
238 if (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);
243 rcu_read_unlock();
244
245 mutex_unlock(&mvm->mutex);
246
247 return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
248 }
249
iwl_dbgfs_update_bf(struct ieee80211_vif * vif,enum iwl_dbgfs_bf_mask param,int value)250 static void iwl_dbgfs_update_bf(struct ieee80211_vif *vif,
251 enum iwl_dbgfs_bf_mask param, int value)
252 {
253 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
254 struct iwl_dbgfs_bf *dbgfs_bf = &mvmvif->dbgfs_bf;
255
256 dbgfs_bf->mask |= param;
257
258 switch (param) {
259 case MVM_DEBUGFS_BF_ENERGY_DELTA:
260 dbgfs_bf->bf_energy_delta = value;
261 break;
262 case MVM_DEBUGFS_BF_ROAMING_ENERGY_DELTA:
263 dbgfs_bf->bf_roaming_energy_delta = value;
264 break;
265 case MVM_DEBUGFS_BF_ROAMING_STATE:
266 dbgfs_bf->bf_roaming_state = value;
267 break;
268 case MVM_DEBUGFS_BF_TEMP_THRESHOLD:
269 dbgfs_bf->bf_temp_threshold = value;
270 break;
271 case MVM_DEBUGFS_BF_TEMP_FAST_FILTER:
272 dbgfs_bf->bf_temp_fast_filter = value;
273 break;
274 case MVM_DEBUGFS_BF_TEMP_SLOW_FILTER:
275 dbgfs_bf->bf_temp_slow_filter = value;
276 break;
277 case MVM_DEBUGFS_BF_ENABLE_BEACON_FILTER:
278 dbgfs_bf->bf_enable_beacon_filter = value;
279 break;
280 case MVM_DEBUGFS_BF_DEBUG_FLAG:
281 dbgfs_bf->bf_debug_flag = value;
282 break;
283 case MVM_DEBUGFS_BF_ESCAPE_TIMER:
284 dbgfs_bf->bf_escape_timer = value;
285 break;
286 case MVM_DEBUGFS_BA_ENABLE_BEACON_ABORT:
287 dbgfs_bf->ba_enable_beacon_abort = value;
288 break;
289 case MVM_DEBUGFS_BA_ESCAPE_TIMER:
290 dbgfs_bf->ba_escape_timer = value;
291 break;
292 }
293 }
294
iwl_dbgfs_bf_params_write(struct ieee80211_vif * vif,char * buf,size_t count,loff_t * ppos)295 static ssize_t iwl_dbgfs_bf_params_write(struct ieee80211_vif *vif, char *buf,
296 size_t count, loff_t *ppos)
297 {
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;
301 int value, ret = 0;
302
303 if (!strncmp("bf_energy_delta=", buf, 16)) {
304 if (sscanf(buf+16, "%d", &value) != 1)
305 return -EINVAL;
306 if (value < IWL_BF_ENERGY_DELTA_MIN ||
307 value > IWL_BF_ENERGY_DELTA_MAX)
308 return -EINVAL;
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)
312 return -EINVAL;
313 if (value < IWL_BF_ROAMING_ENERGY_DELTA_MIN ||
314 value > IWL_BF_ROAMING_ENERGY_DELTA_MAX)
315 return -EINVAL;
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)
319 return -EINVAL;
320 if (value < IWL_BF_ROAMING_STATE_MIN ||
321 value > IWL_BF_ROAMING_STATE_MAX)
322 return -EINVAL;
323 param = MVM_DEBUGFS_BF_ROAMING_STATE;
324 } else if (!strncmp("bf_temp_threshold=", buf, 18)) {
325 if (sscanf(buf+18, "%d", &value) != 1)
326 return -EINVAL;
327 if (value < IWL_BF_TEMP_THRESHOLD_MIN ||
328 value > IWL_BF_TEMP_THRESHOLD_MAX)
329 return -EINVAL;
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)
333 return -EINVAL;
334 if (value < IWL_BF_TEMP_FAST_FILTER_MIN ||
335 value > IWL_BF_TEMP_FAST_FILTER_MAX)
336 return -EINVAL;
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)
340 return -EINVAL;
341 if (value < IWL_BF_TEMP_SLOW_FILTER_MIN ||
342 value > IWL_BF_TEMP_SLOW_FILTER_MAX)
343 return -EINVAL;
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)
347 return -EINVAL;
348 if (value < 0 || value > 1)
349 return -EINVAL;
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)
353 return -EINVAL;
354 if (value < 0 || value > 1)
355 return -EINVAL;
356 param = MVM_DEBUGFS_BF_DEBUG_FLAG;
357 } else if (!strncmp("bf_escape_timer=", buf, 16)) {
358 if (sscanf(buf+16, "%d", &value) != 1)
359 return -EINVAL;
360 if (value < IWL_BF_ESCAPE_TIMER_MIN ||
361 value > IWL_BF_ESCAPE_TIMER_MAX)
362 return -EINVAL;
363 param = MVM_DEBUGFS_BF_ESCAPE_TIMER;
364 } else if (!strncmp("ba_escape_timer=", buf, 16)) {
365 if (sscanf(buf+16, "%d", &value) != 1)
366 return -EINVAL;
367 if (value < IWL_BA_ESCAPE_TIMER_MIN ||
368 value > IWL_BA_ESCAPE_TIMER_MAX)
369 return -EINVAL;
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)
373 return -EINVAL;
374 if (value < 0 || value > 1)
375 return -EINVAL;
376 param = MVM_DEBUGFS_BA_ENABLE_BEACON_ABORT;
377 } else {
378 return -EINVAL;
379 }
380
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);
385 else
386 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
387 mutex_unlock(&mvm->mutex);
388
389 return ret ?: count;
390 }
391
iwl_dbgfs_bf_params_read(struct file * file,char __user * user_buf,size_t count,loff_t * ppos)392 static ssize_t iwl_dbgfs_bf_params_read(struct file *file,
393 char __user *user_buf,
394 size_t count, loff_t *ppos)
395 {
396 struct ieee80211_vif *vif = file->private_data;
397 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
398 char buf[256];
399 int pos = 0;
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),
407 };
408
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);
412 else
413 cmd.bf_enable_beacon_filter = 0;
414
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));
437
438 return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
439 }
440
iwl_dbgfs_os_device_timediff_read(struct file * file,char __user * user_buf,size_t count,loff_t * ppos)441 static ssize_t iwl_dbgfs_os_device_timediff_read(struct file *file,
442 char __user *user_buf,
443 size_t count, loff_t *ppos)
444 {
445 struct ieee80211_vif *vif = file->private_data;
446 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
447 struct iwl_mvm *mvm = mvmvif->mvm;
448 u32 curr_gp2;
449 u64 curr_os;
450 s64 diff;
451 char buf[64];
452 const size_t bufsz = sizeof(buf);
453 int pos = 0;
454
455 mutex_lock(&mvm->mutex);
456 iwl_mvm_get_sync_time(mvm, CLOCK_BOOTTIME, &curr_gp2, &curr_os, NULL);
457 mutex_unlock(&mvm->mutex);
458
459 do_div(curr_os, NSEC_PER_USEC);
460 diff = curr_os - curr_gp2;
461 pos += scnprintf(buf + pos, bufsz - pos, "diff=%lld\n", diff);
462
463 return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
464 }
465
iwl_dbgfs_low_latency_write(struct ieee80211_vif * vif,char * buf,size_t count,loff_t * ppos)466 static ssize_t iwl_dbgfs_low_latency_write(struct ieee80211_vif *vif, char *buf,
467 size_t count, loff_t *ppos)
468 {
469 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
470 struct iwl_mvm *mvm = mvmvif->mvm;
471 u8 value;
472 int ret;
473
474 ret = kstrtou8(buf, 0, &value);
475 if (ret)
476 return ret;
477 if (value > 1)
478 return -EINVAL;
479
480 mutex_lock(&mvm->mutex);
481 iwl_mvm_update_low_latency(mvm, vif, value, LOW_LATENCY_DEBUGFS);
482 mutex_unlock(&mvm->mutex);
483
484 return count;
485 }
486
487 static ssize_t
iwl_dbgfs_low_latency_force_write(struct ieee80211_vif * vif,char * buf,size_t count,loff_t * ppos)488 iwl_dbgfs_low_latency_force_write(struct ieee80211_vif *vif, char *buf,
489 size_t count, loff_t *ppos)
490 {
491 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
492 struct iwl_mvm *mvm = mvmvif->mvm;
493 u8 value;
494 int ret;
495
496 ret = kstrtou8(buf, 0, &value);
497 if (ret)
498 return ret;
499
500 if (value > NUM_LOW_LATENCY_FORCE)
501 return -EINVAL;
502
503 mutex_lock(&mvm->mutex);
504 if (value == LOW_LATENCY_FORCE_UNSET) {
505 iwl_mvm_update_low_latency(mvm, vif, false,
506 LOW_LATENCY_DEBUGFS_FORCE);
507 iwl_mvm_update_low_latency(mvm, vif, false,
508 LOW_LATENCY_DEBUGFS_FORCE_ENABLE);
509 } else {
510 iwl_mvm_update_low_latency(mvm, vif,
511 value == LOW_LATENCY_FORCE_ON,
512 LOW_LATENCY_DEBUGFS_FORCE);
513 iwl_mvm_update_low_latency(mvm, vif, true,
514 LOW_LATENCY_DEBUGFS_FORCE_ENABLE);
515 }
516 mutex_unlock(&mvm->mutex);
517 return count;
518 }
519
iwl_dbgfs_low_latency_read(struct file * file,char __user * user_buf,size_t count,loff_t * ppos)520 static ssize_t iwl_dbgfs_low_latency_read(struct file *file,
521 char __user *user_buf,
522 size_t count, loff_t *ppos)
523 {
524 struct ieee80211_vif *vif = file->private_data;
525 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
526 char format[] = "traffic=%d\ndbgfs=%d\nvcmd=%d\nvif_type=%d\n"
527 "dbgfs_force_enable=%d\ndbgfs_force=%d\nactual=%d\n";
528
529 /*
530 * all values in format are boolean so the size of format is enough
531 * for holding the result string
532 */
533 char buf[sizeof(format) + 1] = {};
534 int len;
535
536 len = scnprintf(buf, sizeof(buf) - 1, format,
537 !!(mvmvif->low_latency & LOW_LATENCY_TRAFFIC),
538 !!(mvmvif->low_latency & LOW_LATENCY_DEBUGFS),
539 !!(mvmvif->low_latency & LOW_LATENCY_VCMD),
540 !!(mvmvif->low_latency & LOW_LATENCY_VIF_TYPE),
541 !!(mvmvif->low_latency &
542 LOW_LATENCY_DEBUGFS_FORCE_ENABLE),
543 !!(mvmvif->low_latency & LOW_LATENCY_DEBUGFS_FORCE),
544 !!(mvmvif->low_latency_actual));
545 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
546 }
547
iwl_dbgfs_uapsd_misbehaving_read(struct file * file,char __user * user_buf,size_t count,loff_t * ppos)548 static ssize_t iwl_dbgfs_uapsd_misbehaving_read(struct file *file,
549 char __user *user_buf,
550 size_t count, loff_t *ppos)
551 {
552 struct ieee80211_vif *vif = file->private_data;
553 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
554 char buf[20];
555 int len;
556
557 len = sprintf(buf, "%pM\n", mvmvif->uapsd_misbehaving_ap_addr);
558 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
559 }
560
iwl_dbgfs_uapsd_misbehaving_write(struct ieee80211_vif * vif,char * buf,size_t count,loff_t * ppos)561 static ssize_t iwl_dbgfs_uapsd_misbehaving_write(struct ieee80211_vif *vif,
562 char *buf, size_t count,
563 loff_t *ppos)
564 {
565 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
566 struct iwl_mvm *mvm = mvmvif->mvm;
567 bool ret;
568
569 mutex_lock(&mvm->mutex);
570 ret = mac_pton(buf, mvmvif->uapsd_misbehaving_ap_addr);
571 mutex_unlock(&mvm->mutex);
572
573 return ret ? count : -EINVAL;
574 }
575
iwl_dbgfs_rx_phyinfo_write(struct ieee80211_vif * vif,char * buf,size_t count,loff_t * ppos)576 static ssize_t iwl_dbgfs_rx_phyinfo_write(struct ieee80211_vif *vif, char *buf,
577 size_t count, loff_t *ppos)
578 {
579 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
580 struct iwl_mvm *mvm = mvmvif->mvm;
581 struct ieee80211_chanctx_conf *chanctx_conf;
582 struct iwl_mvm_phy_ctxt *phy_ctxt;
583 u16 value;
584 int ret;
585
586 ret = kstrtou16(buf, 0, &value);
587 if (ret)
588 return ret;
589
590 mutex_lock(&mvm->mutex);
591 rcu_read_lock();
592
593 chanctx_conf = rcu_dereference(vif->bss_conf.chanctx_conf);
594 /* make sure the channel context is assigned */
595 if (!chanctx_conf) {
596 rcu_read_unlock();
597 mutex_unlock(&mvm->mutex);
598 return -EINVAL;
599 }
600
601 phy_ctxt = &mvm->phy_ctxts[*(u16 *)chanctx_conf->drv_priv];
602 rcu_read_unlock();
603
604 mvm->dbgfs_rx_phyinfo = value;
605
606 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chanctx_conf->min_def,
607 chanctx_conf->rx_chains_static,
608 chanctx_conf->rx_chains_dynamic);
609 mutex_unlock(&mvm->mutex);
610
611 return ret ?: count;
612 }
613
iwl_dbgfs_rx_phyinfo_read(struct file * file,char __user * user_buf,size_t count,loff_t * ppos)614 static ssize_t iwl_dbgfs_rx_phyinfo_read(struct file *file,
615 char __user *user_buf,
616 size_t count, loff_t *ppos)
617 {
618 struct ieee80211_vif *vif = file->private_data;
619 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
620 char buf[8];
621 int len;
622
623 len = scnprintf(buf, sizeof(buf), "0x%04x\n",
624 mvmvif->mvm->dbgfs_rx_phyinfo);
625
626 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
627 }
628
iwl_dbgfs_quota_check(void * data,u8 * mac,struct ieee80211_vif * vif)629 static void iwl_dbgfs_quota_check(void *data, u8 *mac,
630 struct ieee80211_vif *vif)
631 {
632 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
633 int *ret = data;
634
635 if (mvmvif->dbgfs_quota_min)
636 *ret = -EINVAL;
637 }
638
iwl_dbgfs_quota_min_write(struct ieee80211_vif * vif,char * buf,size_t count,loff_t * ppos)639 static ssize_t iwl_dbgfs_quota_min_write(struct ieee80211_vif *vif, char *buf,
640 size_t count, loff_t *ppos)
641 {
642 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
643 struct iwl_mvm *mvm = mvmvif->mvm;
644 u16 value;
645 int ret;
646
647 ret = kstrtou16(buf, 0, &value);
648 if (ret)
649 return ret;
650
651 if (value > 95)
652 return -EINVAL;
653
654 mutex_lock(&mvm->mutex);
655
656 mvmvif->dbgfs_quota_min = 0;
657 ieee80211_iterate_interfaces(mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
658 iwl_dbgfs_quota_check, &ret);
659 if (ret == 0) {
660 mvmvif->dbgfs_quota_min = value;
661 iwl_mvm_update_quotas(mvm, false, NULL);
662 }
663 mutex_unlock(&mvm->mutex);
664
665 return ret ?: count;
666 }
667
iwl_dbgfs_quota_min_read(struct file * file,char __user * user_buf,size_t count,loff_t * ppos)668 static ssize_t iwl_dbgfs_quota_min_read(struct file *file,
669 char __user *user_buf,
670 size_t count, loff_t *ppos)
671 {
672 struct ieee80211_vif *vif = file->private_data;
673 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
674 char buf[10];
675 int len;
676
677 len = scnprintf(buf, sizeof(buf), "%d\n", mvmvif->dbgfs_quota_min);
678
679 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
680 }
681
682 #define MVM_DEBUGFS_WRITE_FILE_OPS(name, bufsz) \
683 _MVM_DEBUGFS_WRITE_FILE_OPS(name, bufsz, struct ieee80211_vif)
684 #define MVM_DEBUGFS_READ_WRITE_FILE_OPS(name, bufsz) \
685 _MVM_DEBUGFS_READ_WRITE_FILE_OPS(name, bufsz, struct ieee80211_vif)
686 #define MVM_DEBUGFS_ADD_FILE_VIF(name, parent, mode) do { \
687 debugfs_create_file(#name, mode, parent, vif, \
688 &iwl_dbgfs_##name##_ops); \
689 } while (0)
690
691 MVM_DEBUGFS_READ_FILE_OPS(mac_params);
692 MVM_DEBUGFS_READ_FILE_OPS(tx_pwr_lmt);
693 MVM_DEBUGFS_READ_WRITE_FILE_OPS(pm_params, 32);
694 MVM_DEBUGFS_READ_WRITE_FILE_OPS(bf_params, 256);
695 MVM_DEBUGFS_READ_WRITE_FILE_OPS(low_latency, 10);
696 MVM_DEBUGFS_WRITE_FILE_OPS(low_latency_force, 10);
697 MVM_DEBUGFS_READ_WRITE_FILE_OPS(uapsd_misbehaving, 20);
698 MVM_DEBUGFS_READ_WRITE_FILE_OPS(rx_phyinfo, 10);
699 MVM_DEBUGFS_READ_WRITE_FILE_OPS(quota_min, 32);
700 MVM_DEBUGFS_READ_FILE_OPS(os_device_timediff);
701
702
iwl_mvm_vif_dbgfs_register(struct iwl_mvm * mvm,struct ieee80211_vif * vif)703 void iwl_mvm_vif_dbgfs_register(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
704 {
705 struct dentry *dbgfs_dir = vif->debugfs_dir;
706 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
707 char buf[100];
708
709 /*
710 * Check if debugfs directory already exist before creating it.
711 * This may happen when, for example, resetting hw or suspend-resume
712 */
713 if (!dbgfs_dir || mvmvif->dbgfs_dir)
714 return;
715
716 mvmvif->dbgfs_dir = debugfs_create_dir("iwlmvm", dbgfs_dir);
717 if (IS_ERR_OR_NULL(mvmvif->dbgfs_dir)) {
718 IWL_ERR(mvm, "Failed to create debugfs directory under %pd\n",
719 dbgfs_dir);
720 return;
721 }
722
723 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM &&
724 ((vif->type == NL80211_IFTYPE_STATION && !vif->p2p) ||
725 (vif->type == NL80211_IFTYPE_STATION && vif->p2p)))
726 MVM_DEBUGFS_ADD_FILE_VIF(pm_params, mvmvif->dbgfs_dir, 0600);
727
728 MVM_DEBUGFS_ADD_FILE_VIF(tx_pwr_lmt, mvmvif->dbgfs_dir, 0400);
729 MVM_DEBUGFS_ADD_FILE_VIF(mac_params, mvmvif->dbgfs_dir, 0400);
730 MVM_DEBUGFS_ADD_FILE_VIF(low_latency, mvmvif->dbgfs_dir, 0600);
731 MVM_DEBUGFS_ADD_FILE_VIF(low_latency_force, mvmvif->dbgfs_dir, 0600);
732 MVM_DEBUGFS_ADD_FILE_VIF(uapsd_misbehaving, mvmvif->dbgfs_dir, 0600);
733 MVM_DEBUGFS_ADD_FILE_VIF(rx_phyinfo, mvmvif->dbgfs_dir, 0600);
734 MVM_DEBUGFS_ADD_FILE_VIF(quota_min, mvmvif->dbgfs_dir, 0600);
735 MVM_DEBUGFS_ADD_FILE_VIF(os_device_timediff, mvmvif->dbgfs_dir, 0400);
736
737 if (vif->type == NL80211_IFTYPE_STATION && !vif->p2p &&
738 mvmvif == mvm->bf_allowed_vif)
739 MVM_DEBUGFS_ADD_FILE_VIF(bf_params, mvmvif->dbgfs_dir, 0600);
740
741 /*
742 * Create symlink for convenience pointing to interface specific
743 * debugfs entries for the driver. For example, under
744 * /sys/kernel/debug/iwlwifi/0000\:02\:00.0/iwlmvm/
745 * find
746 * netdev:wlan0 -> ../../../ieee80211/phy0/netdev:wlan0/iwlmvm/
747 */
748 snprintf(buf, 100, "../../../%pd3/%pd",
749 dbgfs_dir,
750 mvmvif->dbgfs_dir);
751
752 mvmvif->dbgfs_slink = debugfs_create_symlink(dbgfs_dir->d_name.name,
753 mvm->debugfs_dir, buf);
754 }
755
iwl_mvm_vif_dbgfs_clean(struct iwl_mvm * mvm,struct ieee80211_vif * vif)756 void iwl_mvm_vif_dbgfs_clean(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
757 {
758 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
759
760 debugfs_remove(mvmvif->dbgfs_slink);
761 mvmvif->dbgfs_slink = NULL;
762
763 debugfs_remove_recursive(mvmvif->dbgfs_dir);
764 mvmvif->dbgfs_dir = NULL;
765 }
766