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63#include "mvm.h"
64#include "sta.h"
65#include "iwl-io.h"
66
67struct iwl_dbgfs_mvm_ctx {
68 struct iwl_mvm *mvm;
69 struct ieee80211_vif *vif;
70};
71
72static ssize_t iwl_dbgfs_tx_flush_write(struct file *file,
73 const char __user *user_buf,
74 size_t count, loff_t *ppos)
75{
76 struct iwl_mvm *mvm = file->private_data;
77
78 char buf[16];
79 int buf_size, ret;
80 u32 scd_q_msk;
81
82 if (!mvm->ucode_loaded || mvm->cur_ucode != IWL_UCODE_REGULAR)
83 return -EIO;
84
85 memset(buf, 0, sizeof(buf));
86 buf_size = min(count, sizeof(buf) - 1);
87 if (copy_from_user(buf, user_buf, buf_size))
88 return -EFAULT;
89
90 if (sscanf(buf, "%x", &scd_q_msk) != 1)
91 return -EINVAL;
92
93 IWL_ERR(mvm, "FLUSHING queues: scd_q_msk = 0x%x\n", scd_q_msk);
94
95 mutex_lock(&mvm->mutex);
96 ret = iwl_mvm_flush_tx_path(mvm, scd_q_msk, true) ? : count;
97 mutex_unlock(&mvm->mutex);
98
99 return ret;
100}
101
102static ssize_t iwl_dbgfs_sta_drain_write(struct file *file,
103 const char __user *user_buf,
104 size_t count, loff_t *ppos)
105{
106 struct iwl_mvm *mvm = file->private_data;
107 struct ieee80211_sta *sta;
108
109 char buf[8];
110 int buf_size, sta_id, drain, ret;
111
112 if (!mvm->ucode_loaded || mvm->cur_ucode != IWL_UCODE_REGULAR)
113 return -EIO;
114
115 memset(buf, 0, sizeof(buf));
116 buf_size = min(count, sizeof(buf) - 1);
117 if (copy_from_user(buf, user_buf, buf_size))
118 return -EFAULT;
119
120 if (sscanf(buf, "%d %d", &sta_id, &drain) != 2)
121 return -EINVAL;
122
123 mutex_lock(&mvm->mutex);
124
125 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
126 lockdep_is_held(&mvm->mutex));
127 if (IS_ERR_OR_NULL(sta))
128 ret = -ENOENT;
129 else
130 ret = iwl_mvm_drain_sta(mvm, (void *)sta->drv_priv, drain) ? :
131 count;
132
133 mutex_unlock(&mvm->mutex);
134
135 return ret;
136}
137
138static ssize_t iwl_dbgfs_sram_read(struct file *file, char __user *user_buf,
139 size_t count, loff_t *ppos)
140{
141 struct iwl_mvm *mvm = file->private_data;
142 const struct fw_img *img;
143 int ofs, len, pos = 0;
144 size_t bufsz, ret;
145 char *buf;
146 u8 *ptr;
147
148
149 if (!mvm->dbgfs_sram_offset && !mvm->dbgfs_sram_len) {
150 mvm->dbgfs_sram_offset = 0x800000;
151 if (!mvm->ucode_loaded)
152 return -EINVAL;
153 img = &mvm->fw->img[mvm->cur_ucode];
154 mvm->dbgfs_sram_len = img->sec[IWL_UCODE_SECTION_DATA].len;
155 }
156 len = mvm->dbgfs_sram_len;
157
158 bufsz = len * 4 + 256;
159 buf = kzalloc(bufsz, GFP_KERNEL);
160 if (!buf)
161 return -ENOMEM;
162
163 ptr = kzalloc(len, GFP_KERNEL);
164 if (!ptr) {
165 kfree(buf);
166 return -ENOMEM;
167 }
168
169 pos += scnprintf(buf + pos, bufsz - pos, "sram_len: 0x%x\n", len);
170 pos += scnprintf(buf + pos, bufsz - pos, "sram_offset: 0x%x\n",
171 mvm->dbgfs_sram_offset);
172
173 iwl_trans_read_mem_bytes(mvm->trans,
174 mvm->dbgfs_sram_offset,
175 ptr, len);
176 for (ofs = 0; ofs < len; ofs += 16) {
177 pos += scnprintf(buf + pos, bufsz - pos, "0x%.4x ", ofs);
178 hex_dump_to_buffer(ptr + ofs, 16, 16, 1, buf + pos,
179 bufsz - pos, false);
180 pos += strlen(buf + pos);
181 if (bufsz - pos > 0)
182 buf[pos++] = '\n';
183 }
184
185 ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
186
187 kfree(buf);
188 kfree(ptr);
189
190 return ret;
191}
192
193static ssize_t iwl_dbgfs_sram_write(struct file *file,
194 const char __user *user_buf, size_t count,
195 loff_t *ppos)
196{
197 struct iwl_mvm *mvm = file->private_data;
198 char buf[64];
199 int buf_size;
200 u32 offset, len;
201
202 memset(buf, 0, sizeof(buf));
203 buf_size = min(count, sizeof(buf) - 1);
204 if (copy_from_user(buf, user_buf, buf_size))
205 return -EFAULT;
206
207 if (sscanf(buf, "%x,%x", &offset, &len) == 2) {
208 if ((offset & 0x3) || (len & 0x3))
209 return -EINVAL;
210 mvm->dbgfs_sram_offset = offset;
211 mvm->dbgfs_sram_len = len;
212 } else {
213 mvm->dbgfs_sram_offset = 0;
214 mvm->dbgfs_sram_len = 0;
215 }
216
217 return count;
218}
219
220static ssize_t iwl_dbgfs_stations_read(struct file *file, char __user *user_buf,
221 size_t count, loff_t *ppos)
222{
223 struct iwl_mvm *mvm = file->private_data;
224 struct ieee80211_sta *sta;
225 char buf[400];
226 int i, pos = 0, bufsz = sizeof(buf);
227
228 mutex_lock(&mvm->mutex);
229
230 for (i = 0; i < IWL_MVM_STATION_COUNT; i++) {
231 pos += scnprintf(buf + pos, bufsz - pos, "%.2d: ", i);
232 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
233 lockdep_is_held(&mvm->mutex));
234 if (!sta)
235 pos += scnprintf(buf + pos, bufsz - pos, "N/A\n");
236 else if (IS_ERR(sta))
237 pos += scnprintf(buf + pos, bufsz - pos, "%ld\n",
238 PTR_ERR(sta));
239 else
240 pos += scnprintf(buf + pos, bufsz - pos, "%pM\n",
241 sta->addr);
242 }
243
244 mutex_unlock(&mvm->mutex);
245
246 return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
247}
248
249static ssize_t iwl_dbgfs_power_down_allow_write(struct file *file,
250 const char __user *user_buf,
251 size_t count, loff_t *ppos)
252{
253 struct iwl_mvm *mvm = file->private_data;
254 char buf[8] = {};
255 int allow;
256
257 if (!mvm->ucode_loaded)
258 return -EIO;
259
260 if (copy_from_user(buf, user_buf, sizeof(buf)))
261 return -EFAULT;
262
263 if (sscanf(buf, "%d", &allow) != 1)
264 return -EINVAL;
265
266 IWL_DEBUG_POWER(mvm, "%s device power down\n",
267 allow ? "allow" : "prevent");
268
269
270
271
272
273 return count;
274}
275
276static ssize_t iwl_dbgfs_power_down_d3_allow_write(struct file *file,
277 const char __user *user_buf,
278 size_t count, loff_t *ppos)
279{
280 struct iwl_mvm *mvm = file->private_data;
281 char buf[8] = {};
282 int allow;
283
284 if (copy_from_user(buf, user_buf, sizeof(buf)))
285 return -EFAULT;
286
287 if (sscanf(buf, "%d", &allow) != 1)
288 return -EINVAL;
289
290 IWL_DEBUG_POWER(mvm, "%s device power down in d3\n",
291 allow ? "allow" : "prevent");
292
293
294
295
296
297
298 mvm->prevent_power_down_d3 = !allow;
299
300 return count;
301}
302
303static ssize_t iwl_dbgfs_mac_params_read(struct file *file,
304 char __user *user_buf,
305 size_t count, loff_t *ppos)
306{
307 struct ieee80211_vif *vif = file->private_data;
308 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
309 struct iwl_mvm *mvm = mvmvif->dbgfs_data;
310 u8 ap_sta_id;
311 struct ieee80211_chanctx_conf *chanctx_conf;
312 char buf[512];
313 int bufsz = sizeof(buf);
314 int pos = 0;
315 int i;
316
317 mutex_lock(&mvm->mutex);
318
319 ap_sta_id = mvmvif->ap_sta_id;
320
321 pos += scnprintf(buf+pos, bufsz-pos, "mac id/color: %d / %d\n",
322 mvmvif->id, mvmvif->color);
323 pos += scnprintf(buf+pos, bufsz-pos, "bssid: %pM\n",
324 vif->bss_conf.bssid);
325 pos += scnprintf(buf+pos, bufsz-pos, "QoS:\n");
326 for (i = 0; i < ARRAY_SIZE(mvmvif->queue_params); i++) {
327 pos += scnprintf(buf+pos, bufsz-pos,
328 "\t%d: txop:%d - cw_min:%d - cw_max = %d - aifs = %d upasd = %d\n",
329 i, mvmvif->queue_params[i].txop,
330 mvmvif->queue_params[i].cw_min,
331 mvmvif->queue_params[i].cw_max,
332 mvmvif->queue_params[i].aifs,
333 mvmvif->queue_params[i].uapsd);
334 }
335
336 if (vif->type == NL80211_IFTYPE_STATION &&
337 ap_sta_id != IWL_MVM_STATION_COUNT) {
338 struct ieee80211_sta *sta;
339 struct iwl_mvm_sta *mvm_sta;
340
341 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[ap_sta_id],
342 lockdep_is_held(&mvm->mutex));
343 mvm_sta = (void *)sta->drv_priv;
344 pos += scnprintf(buf+pos, bufsz-pos,
345 "ap_sta_id %d - reduced Tx power %d\n",
346 ap_sta_id, mvm_sta->bt_reduced_txpower);
347 }
348
349 rcu_read_lock();
350 chanctx_conf = rcu_dereference(vif->chanctx_conf);
351 if (chanctx_conf) {
352 pos += scnprintf(buf+pos, bufsz-pos,
353 "idle rx chains %d, active rx chains: %d\n",
354 chanctx_conf->rx_chains_static,
355 chanctx_conf->rx_chains_dynamic);
356 }
357 rcu_read_unlock();
358
359 mutex_unlock(&mvm->mutex);
360
361 return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
362}
363
364#define BT_MBOX_MSG(_notif, _num, _field) \
365 ((le32_to_cpu((_notif)->mbox_msg[(_num)]) & BT_MBOX##_num##_##_field)\
366 >> BT_MBOX##_num##_##_field##_POS)
367
368
369#define BT_MBOX_PRINT(_num, _field, _end) \
370 pos += scnprintf(buf + pos, bufsz - pos, \
371 "\t%s: %d%s", \
372 #_field, \
373 BT_MBOX_MSG(notif, _num, _field), \
374 true ? "\n" : ", ");
375
376static ssize_t iwl_dbgfs_bt_notif_read(struct file *file, char __user *user_buf,
377 size_t count, loff_t *ppos)
378{
379 struct iwl_mvm *mvm = file->private_data;
380 struct iwl_bt_coex_profile_notif *notif = &mvm->last_bt_notif;
381 char *buf;
382 int ret, pos = 0, bufsz = sizeof(char) * 1024;
383
384 buf = kmalloc(bufsz, GFP_KERNEL);
385 if (!buf)
386 return -ENOMEM;
387
388 mutex_lock(&mvm->mutex);
389
390 pos += scnprintf(buf+pos, bufsz-pos, "MBOX dw0:\n");
391
392 BT_MBOX_PRINT(0, LE_SLAVE_LAT, false);
393 BT_MBOX_PRINT(0, LE_PROF1, false);
394 BT_MBOX_PRINT(0, LE_PROF2, false);
395 BT_MBOX_PRINT(0, LE_PROF_OTHER, false);
396 BT_MBOX_PRINT(0, CHL_SEQ_N, false);
397 BT_MBOX_PRINT(0, INBAND_S, false);
398 BT_MBOX_PRINT(0, LE_MIN_RSSI, false);
399 BT_MBOX_PRINT(0, LE_SCAN, false);
400 BT_MBOX_PRINT(0, LE_ADV, false);
401 BT_MBOX_PRINT(0, LE_MAX_TX_POWER, false);
402 BT_MBOX_PRINT(0, OPEN_CON_1, true);
403
404 pos += scnprintf(buf+pos, bufsz-pos, "MBOX dw1:\n");
405
406 BT_MBOX_PRINT(1, BR_MAX_TX_POWER, false);
407 BT_MBOX_PRINT(1, IP_SR, false);
408 BT_MBOX_PRINT(1, LE_MSTR, false);
409 BT_MBOX_PRINT(1, AGGR_TRFC_LD, false);
410 BT_MBOX_PRINT(1, MSG_TYPE, false);
411 BT_MBOX_PRINT(1, SSN, true);
412
413 pos += scnprintf(buf+pos, bufsz-pos, "MBOX dw2:\n");
414
415 BT_MBOX_PRINT(2, SNIFF_ACT, false);
416 BT_MBOX_PRINT(2, PAG, false);
417 BT_MBOX_PRINT(2, INQUIRY, false);
418 BT_MBOX_PRINT(2, CONN, false);
419 BT_MBOX_PRINT(2, SNIFF_INTERVAL, false);
420 BT_MBOX_PRINT(2, DISC, false);
421 BT_MBOX_PRINT(2, SCO_TX_ACT, false);
422 BT_MBOX_PRINT(2, SCO_RX_ACT, false);
423 BT_MBOX_PRINT(2, ESCO_RE_TX, false);
424 BT_MBOX_PRINT(2, SCO_DURATION, true);
425
426 pos += scnprintf(buf+pos, bufsz-pos, "MBOX dw3:\n");
427
428 BT_MBOX_PRINT(3, SCO_STATE, false);
429 BT_MBOX_PRINT(3, SNIFF_STATE, false);
430 BT_MBOX_PRINT(3, A2DP_STATE, false);
431 BT_MBOX_PRINT(3, ACL_STATE, false);
432 BT_MBOX_PRINT(3, MSTR_STATE, false);
433 BT_MBOX_PRINT(3, OBX_STATE, false);
434 BT_MBOX_PRINT(3, OPEN_CON_2, false);
435 BT_MBOX_PRINT(3, TRAFFIC_LOAD, false);
436 BT_MBOX_PRINT(3, CHL_SEQN_LSB, false);
437 BT_MBOX_PRINT(3, INBAND_P, false);
438 BT_MBOX_PRINT(3, MSG_TYPE_2, false);
439 BT_MBOX_PRINT(3, SSN_2, false);
440 BT_MBOX_PRINT(3, UPDATE_REQUEST, true);
441
442 pos += scnprintf(buf+pos, bufsz-pos, "bt_status = %d\n",
443 notif->bt_status);
444 pos += scnprintf(buf+pos, bufsz-pos, "bt_open_conn = %d\n",
445 notif->bt_open_conn);
446 pos += scnprintf(buf+pos, bufsz-pos, "bt_traffic_load = %d\n",
447 notif->bt_traffic_load);
448 pos += scnprintf(buf+pos, bufsz-pos, "bt_agg_traffic_load = %d\n",
449 notif->bt_agg_traffic_load);
450 pos += scnprintf(buf+pos, bufsz-pos, "bt_ci_compliance = %d\n",
451 notif->bt_ci_compliance);
452
453 mutex_unlock(&mvm->mutex);
454
455 ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
456 kfree(buf);
457
458 return ret;
459}
460#undef BT_MBOX_PRINT
461
462static ssize_t iwl_dbgfs_fw_restart_write(struct file *file,
463 const char __user *user_buf,
464 size_t count, loff_t *ppos)
465{
466 struct iwl_mvm *mvm = file->private_data;
467 bool restart_fw = iwlwifi_mod_params.restart_fw;
468 int ret;
469
470 iwlwifi_mod_params.restart_fw = true;
471
472 mutex_lock(&mvm->mutex);
473
474
475 ret = iwl_mvm_send_cmd_pdu(mvm, REPLY_ERROR, CMD_SYNC, 0, NULL);
476
477 mutex_unlock(&mvm->mutex);
478
479 iwlwifi_mod_params.restart_fw = restart_fw;
480
481 return count;
482}
483
484#define MVM_DEBUGFS_READ_FILE_OPS(name) \
485static const struct file_operations iwl_dbgfs_##name##_ops = { \
486 .read = iwl_dbgfs_##name##_read, \
487 .open = simple_open, \
488 .llseek = generic_file_llseek, \
489}
490
491#define MVM_DEBUGFS_READ_WRITE_FILE_OPS(name) \
492static const struct file_operations iwl_dbgfs_##name##_ops = { \
493 .write = iwl_dbgfs_##name##_write, \
494 .read = iwl_dbgfs_##name##_read, \
495 .open = simple_open, \
496 .llseek = generic_file_llseek, \
497};
498
499#define MVM_DEBUGFS_WRITE_FILE_OPS(name) \
500static const struct file_operations iwl_dbgfs_##name##_ops = { \
501 .write = iwl_dbgfs_##name##_write, \
502 .open = simple_open, \
503 .llseek = generic_file_llseek, \
504};
505
506#define MVM_DEBUGFS_ADD_FILE(name, parent, mode) do { \
507 if (!debugfs_create_file(#name, mode, parent, mvm, \
508 &iwl_dbgfs_##name##_ops)) \
509 goto err; \
510 } while (0)
511
512#define MVM_DEBUGFS_ADD_FILE_VIF(name, parent, mode) do { \
513 if (!debugfs_create_file(#name, mode, parent, vif, \
514 &iwl_dbgfs_##name##_ops)) \
515 goto err; \
516 } while (0)
517
518
519MVM_DEBUGFS_WRITE_FILE_OPS(tx_flush);
520MVM_DEBUGFS_WRITE_FILE_OPS(sta_drain);
521MVM_DEBUGFS_READ_WRITE_FILE_OPS(sram);
522MVM_DEBUGFS_READ_FILE_OPS(stations);
523MVM_DEBUGFS_READ_FILE_OPS(bt_notif);
524MVM_DEBUGFS_WRITE_FILE_OPS(power_down_allow);
525MVM_DEBUGFS_WRITE_FILE_OPS(power_down_d3_allow);
526MVM_DEBUGFS_WRITE_FILE_OPS(fw_restart);
527
528
529MVM_DEBUGFS_READ_FILE_OPS(mac_params);
530
531int iwl_mvm_dbgfs_register(struct iwl_mvm *mvm, struct dentry *dbgfs_dir)
532{
533 char buf[100];
534
535 mvm->debugfs_dir = dbgfs_dir;
536
537 MVM_DEBUGFS_ADD_FILE(tx_flush, mvm->debugfs_dir, S_IWUSR);
538 MVM_DEBUGFS_ADD_FILE(sta_drain, mvm->debugfs_dir, S_IWUSR);
539 MVM_DEBUGFS_ADD_FILE(sram, mvm->debugfs_dir, S_IWUSR | S_IRUSR);
540 MVM_DEBUGFS_ADD_FILE(stations, dbgfs_dir, S_IRUSR);
541 MVM_DEBUGFS_ADD_FILE(bt_notif, dbgfs_dir, S_IRUSR);
542 MVM_DEBUGFS_ADD_FILE(power_down_allow, mvm->debugfs_dir, S_IWUSR);
543 MVM_DEBUGFS_ADD_FILE(power_down_d3_allow, mvm->debugfs_dir, S_IWUSR);
544 MVM_DEBUGFS_ADD_FILE(fw_restart, mvm->debugfs_dir, S_IWUSR);
545
546
547
548
549
550 snprintf(buf, 100, "../../%s/%s",
551 dbgfs_dir->d_parent->d_parent->d_name.name,
552 dbgfs_dir->d_parent->d_name.name);
553 if (!debugfs_create_symlink("iwlwifi", mvm->hw->wiphy->debugfsdir, buf))
554 goto err;
555
556 return 0;
557err:
558 IWL_ERR(mvm, "Can't create the mvm debugfs directory\n");
559 return -ENOMEM;
560}
561
562void iwl_mvm_vif_dbgfs_register(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
563{
564 struct dentry *dbgfs_dir = vif->debugfs_dir;
565 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
566 char buf[100];
567
568 if (!dbgfs_dir)
569 return;
570
571 mvmvif->dbgfs_dir = debugfs_create_dir("iwlmvm", dbgfs_dir);
572 mvmvif->dbgfs_data = mvm;
573
574 if (!mvmvif->dbgfs_dir) {
575 IWL_ERR(mvm, "Failed to create debugfs directory under %s\n",
576 dbgfs_dir->d_name.name);
577 return;
578 }
579
580 MVM_DEBUGFS_ADD_FILE_VIF(mac_params, mvmvif->dbgfs_dir,
581 S_IRUSR);
582
583
584
585
586
587
588
589
590 snprintf(buf, 100, "../../../%s/%s/%s/%s",
591 dbgfs_dir->d_parent->d_parent->d_name.name,
592 dbgfs_dir->d_parent->d_name.name,
593 dbgfs_dir->d_name.name,
594 mvmvif->dbgfs_dir->d_name.name);
595
596 mvmvif->dbgfs_slink = debugfs_create_symlink(dbgfs_dir->d_name.name,
597 mvm->debugfs_dir, buf);
598 if (!mvmvif->dbgfs_slink)
599 IWL_ERR(mvm, "Can't create debugfs symbolic link under %s\n",
600 dbgfs_dir->d_name.name);
601 return;
602err:
603 IWL_ERR(mvm, "Can't create debugfs entity\n");
604}
605
606void iwl_mvm_vif_dbgfs_clean(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
607{
608 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
609
610 debugfs_remove(mvmvif->dbgfs_slink);
611 mvmvif->dbgfs_slink = NULL;
612
613 debugfs_remove_recursive(mvmvif->dbgfs_dir);
614 mvmvif->dbgfs_dir = NULL;
615}
616
