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 #if defined(__FreeBSD__)
10 #include <linux/math64.h>
11 #endif
12
iwl_dbgfs_update_pm(struct iwl_mvm * mvm,struct ieee80211_vif * vif,enum iwl_dbgfs_pm_mask param,int val)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
iwl_dbgfs_pm_params_write(struct ieee80211_vif * vif,char * buf,size_t count,loff_t * ppos)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
iwl_dbgfs_tx_pwr_lmt_read(struct file * file,char __user * user_buf,size_t count,loff_t * ppos)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
iwl_dbgfs_pm_params_read(struct file * file,char __user * user_buf,size_t count,loff_t * ppos)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
iwl_dbgfs_mac_params_read(struct file * file,char __user * user_buf,size_t count,loff_t * ppos)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
iwl_dbgfs_update_bf(struct ieee80211_vif * vif,enum iwl_dbgfs_bf_mask param,int value)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
iwl_dbgfs_bf_params_write(struct ieee80211_vif * vif,char * buf,size_t count,loff_t * ppos)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
iwl_dbgfs_bf_params_read(struct file * file,char __user * user_buf,size_t count,loff_t * ppos)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
iwl_dbgfs_os_device_timediff_read(struct file * file,char __user * user_buf,size_t count,loff_t * ppos)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
iwl_dbgfs_low_latency_write(struct ieee80211_vif * vif,char * buf,size_t count,loff_t * ppos)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
iwl_dbgfs_low_latency_force_write(struct ieee80211_vif * vif,char * buf,size_t count,loff_t * ppos)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
iwl_dbgfs_low_latency_read(struct file * file,char __user * user_buf,size_t count,loff_t * ppos)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
iwl_dbgfs_uapsd_misbehaving_read(struct file * file,char __user * user_buf,size_t count,loff_t * ppos)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
iwl_dbgfs_uapsd_misbehaving_write(struct ieee80211_vif * vif,char * buf,size_t count,loff_t * ppos)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
iwl_dbgfs_rx_phyinfo_write(struct ieee80211_vif * vif,char * buf,size_t count,loff_t * ppos)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_chanctx_conf *chanctx_conf;
589 struct iwl_mvm_phy_ctxt *phy_ctxt;
590 u16 value;
591 int ret;
592
593 ret = kstrtou16(buf, 0, &value);
594 if (ret)
595 return ret;
596
597 mutex_lock(&mvm->mutex);
598 rcu_read_lock();
599
600 chanctx_conf = rcu_dereference(vif->bss_conf.chanctx_conf);
601 /* make sure the channel context is assigned */
602 if (!chanctx_conf) {
603 rcu_read_unlock();
604 mutex_unlock(&mvm->mutex);
605 return -EINVAL;
606 }
607
608 phy_ctxt = &mvm->phy_ctxts[*(u16 *)chanctx_conf->drv_priv];
609 rcu_read_unlock();
610
611 mvm->dbgfs_rx_phyinfo = value;
612
613 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chanctx_conf->min_def,
614 chanctx_conf->rx_chains_static,
615 chanctx_conf->rx_chains_dynamic);
616 mutex_unlock(&mvm->mutex);
617
618 return ret ?: count;
619 }
620
iwl_dbgfs_rx_phyinfo_read(struct file * file,char __user * user_buf,size_t count,loff_t * ppos)621 static ssize_t iwl_dbgfs_rx_phyinfo_read(struct file *file,
622 char __user *user_buf,
623 size_t count, loff_t *ppos)
624 {
625 struct ieee80211_vif *vif = file->private_data;
626 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
627 char buf[8];
628 int len;
629
630 len = scnprintf(buf, sizeof(buf), "0x%04x\n",
631 mvmvif->mvm->dbgfs_rx_phyinfo);
632
633 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
634 }
635
iwl_dbgfs_quota_check(void * data,u8 * mac,struct ieee80211_vif * vif)636 static void iwl_dbgfs_quota_check(void *data, u8 *mac,
637 struct ieee80211_vif *vif)
638 {
639 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
640 int *ret = data;
641
642 if (mvmvif->dbgfs_quota_min)
643 *ret = -EINVAL;
644 }
645
iwl_dbgfs_quota_min_write(struct ieee80211_vif * vif,char * buf,size_t count,loff_t * ppos)646 static ssize_t iwl_dbgfs_quota_min_write(struct ieee80211_vif *vif, char *buf,
647 size_t count, loff_t *ppos)
648 {
649 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
650 struct iwl_mvm *mvm = mvmvif->mvm;
651 u16 value;
652 int ret;
653
654 ret = kstrtou16(buf, 0, &value);
655 if (ret)
656 return ret;
657
658 if (value > 95)
659 return -EINVAL;
660
661 mutex_lock(&mvm->mutex);
662
663 mvmvif->dbgfs_quota_min = 0;
664 ieee80211_iterate_interfaces(mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
665 iwl_dbgfs_quota_check, &ret);
666 if (ret == 0) {
667 mvmvif->dbgfs_quota_min = value;
668 iwl_mvm_update_quotas(mvm, false, NULL);
669 }
670 mutex_unlock(&mvm->mutex);
671
672 return ret ?: count;
673 }
674
iwl_dbgfs_quota_min_read(struct file * file,char __user * user_buf,size_t count,loff_t * ppos)675 static ssize_t iwl_dbgfs_quota_min_read(struct file *file,
676 char __user *user_buf,
677 size_t count, loff_t *ppos)
678 {
679 struct ieee80211_vif *vif = file->private_data;
680 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
681 char buf[10];
682 int len;
683
684 len = scnprintf(buf, sizeof(buf), "%d\n", mvmvif->dbgfs_quota_min);
685
686 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
687 }
688
689 #define MVM_DEBUGFS_WRITE_FILE_OPS(name, bufsz) \
690 _MVM_DEBUGFS_WRITE_FILE_OPS(name, bufsz, struct ieee80211_vif)
691 #define MVM_DEBUGFS_READ_WRITE_FILE_OPS(name, bufsz) \
692 _MVM_DEBUGFS_READ_WRITE_FILE_OPS(name, bufsz, struct ieee80211_vif)
693 #define MVM_DEBUGFS_ADD_FILE_VIF(name, parent, mode) do { \
694 debugfs_create_file(#name, mode, parent, vif, \
695 &iwl_dbgfs_##name##_ops); \
696 } while (0)
697
698 MVM_DEBUGFS_READ_FILE_OPS(mac_params);
699 MVM_DEBUGFS_READ_FILE_OPS(tx_pwr_lmt);
700 MVM_DEBUGFS_READ_WRITE_FILE_OPS(pm_params, 32);
701 MVM_DEBUGFS_READ_WRITE_FILE_OPS(bf_params, 256);
702 MVM_DEBUGFS_READ_WRITE_FILE_OPS(low_latency, 10);
703 MVM_DEBUGFS_WRITE_FILE_OPS(low_latency_force, 10);
704 MVM_DEBUGFS_READ_WRITE_FILE_OPS(uapsd_misbehaving, 20);
705 MVM_DEBUGFS_READ_WRITE_FILE_OPS(rx_phyinfo, 10);
706 MVM_DEBUGFS_READ_WRITE_FILE_OPS(quota_min, 32);
707 MVM_DEBUGFS_READ_FILE_OPS(os_device_timediff);
708
709
iwl_mvm_vif_dbgfs_register(struct iwl_mvm * mvm,struct ieee80211_vif * vif)710 void iwl_mvm_vif_dbgfs_register(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
711 {
712 struct dentry *dbgfs_dir = vif->debugfs_dir;
713 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
714 #if defined(__linux__)
715 char buf[100];
716 #endif
717
718 /*
719 * Check if debugfs directory already exist before creating it.
720 * This may happen when, for example, resetting hw or suspend-resume
721 */
722 if (!dbgfs_dir || mvmvif->dbgfs_dir)
723 return;
724
725 mvmvif->dbgfs_dir = debugfs_create_dir("iwlmvm", dbgfs_dir);
726 if (IS_ERR_OR_NULL(mvmvif->dbgfs_dir)) {
727 IWL_ERR(mvm, "Failed to create debugfs directory under %pd\n",
728 dbgfs_dir);
729 return;
730 }
731
732 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM &&
733 ((vif->type == NL80211_IFTYPE_STATION && !vif->p2p) ||
734 (vif->type == NL80211_IFTYPE_STATION && vif->p2p)))
735 MVM_DEBUGFS_ADD_FILE_VIF(pm_params, mvmvif->dbgfs_dir, 0600);
736
737 MVM_DEBUGFS_ADD_FILE_VIF(tx_pwr_lmt, mvmvif->dbgfs_dir, 0400);
738 MVM_DEBUGFS_ADD_FILE_VIF(mac_params, mvmvif->dbgfs_dir, 0400);
739 MVM_DEBUGFS_ADD_FILE_VIF(low_latency, mvmvif->dbgfs_dir, 0600);
740 MVM_DEBUGFS_ADD_FILE_VIF(low_latency_force, mvmvif->dbgfs_dir, 0600);
741 MVM_DEBUGFS_ADD_FILE_VIF(uapsd_misbehaving, mvmvif->dbgfs_dir, 0600);
742 MVM_DEBUGFS_ADD_FILE_VIF(rx_phyinfo, mvmvif->dbgfs_dir, 0600);
743 MVM_DEBUGFS_ADD_FILE_VIF(quota_min, mvmvif->dbgfs_dir, 0600);
744 MVM_DEBUGFS_ADD_FILE_VIF(os_device_timediff, mvmvif->dbgfs_dir, 0400);
745
746 if (vif->type == NL80211_IFTYPE_STATION && !vif->p2p &&
747 mvmvif == mvm->bf_allowed_vif)
748 MVM_DEBUGFS_ADD_FILE_VIF(bf_params, mvmvif->dbgfs_dir, 0600);
749
750 #if defined(__linux__)
751 /*
752 * Create symlink for convenience pointing to interface specific
753 * debugfs entries for the driver. For example, under
754 * /sys/kernel/debug/iwlwifi/0000\:02\:00.0/iwlmvm/
755 * find
756 * netdev:wlan0 -> ../../../ieee80211/phy0/netdev:wlan0/iwlmvm/
757 */
758 snprintf(buf, 100, "../../../%pd3/%pd",
759 dbgfs_dir,
760 mvmvif->dbgfs_dir);
761
762 mvmvif->dbgfs_slink = debugfs_create_symlink(dbgfs_dir->d_name.name,
763 mvm->debugfs_dir, buf);
764 #endif
765 }
766
iwl_mvm_vif_dbgfs_clean(struct iwl_mvm * mvm,struct ieee80211_vif * vif)767 void iwl_mvm_vif_dbgfs_clean(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
768 {
769 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
770
771 debugfs_remove(mvmvif->dbgfs_slink);
772 mvmvif->dbgfs_slink = NULL;
773
774 debugfs_remove_recursive(mvmvif->dbgfs_dir);
775 mvmvif->dbgfs_dir = NULL;
776 }
777