iwlwifi: mvm: no need to check return value of debugfs_create functions
[muen/linux.git] / drivers / net / wireless / intel / iwlwifi / mvm / debugfs.c
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32  * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
33  * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
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63  *****************************************************************************/
64 #include <linux/vmalloc.h>
65 #include <linux/ieee80211.h>
66 #include <linux/netdevice.h>
67
68 #include "mvm.h"
69 #include "sta.h"
70 #include "iwl-io.h"
71 #include "debugfs.h"
72 #include "iwl-modparams.h"
73 #include "fw/error-dump.h"
74
75 static ssize_t iwl_dbgfs_ctdp_budget_read(struct file *file,
76                                           char __user *user_buf,
77                                           size_t count, loff_t *ppos)
78 {
79         struct iwl_mvm *mvm = file->private_data;
80         char buf[16];
81         int pos, budget;
82
83         if (!iwl_mvm_is_ctdp_supported(mvm))
84                 return -EOPNOTSUPP;
85
86         if (!iwl_mvm_firmware_running(mvm) ||
87             mvm->fwrt.cur_fw_img != IWL_UCODE_REGULAR)
88                 return -EIO;
89
90         mutex_lock(&mvm->mutex);
91         budget = iwl_mvm_ctdp_command(mvm, CTDP_CMD_OPERATION_REPORT, 0);
92         mutex_unlock(&mvm->mutex);
93
94         if (budget < 0)
95                 return budget;
96
97         pos = scnprintf(buf, sizeof(buf), "%d\n", budget);
98
99         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
100 }
101
102 static ssize_t iwl_dbgfs_stop_ctdp_write(struct iwl_mvm *mvm, char *buf,
103                                          size_t count, loff_t *ppos)
104 {
105         int ret;
106
107         if (!iwl_mvm_is_ctdp_supported(mvm))
108                 return -EOPNOTSUPP;
109
110         if (!iwl_mvm_firmware_running(mvm) ||
111             mvm->fwrt.cur_fw_img != IWL_UCODE_REGULAR)
112                 return -EIO;
113
114         mutex_lock(&mvm->mutex);
115         ret = iwl_mvm_ctdp_command(mvm, CTDP_CMD_OPERATION_STOP, 0);
116         mutex_unlock(&mvm->mutex);
117
118         return ret ?: count;
119 }
120
121 static ssize_t iwl_dbgfs_force_ctkill_write(struct iwl_mvm *mvm, char *buf,
122                                             size_t count, loff_t *ppos)
123 {
124         if (!iwl_mvm_firmware_running(mvm) ||
125             mvm->fwrt.cur_fw_img != IWL_UCODE_REGULAR)
126                 return -EIO;
127
128         iwl_mvm_enter_ctkill(mvm);
129
130         return count;
131 }
132
133 static ssize_t iwl_dbgfs_tx_flush_write(struct iwl_mvm *mvm, char *buf,
134                                         size_t count, loff_t *ppos)
135 {
136         int ret;
137         u32 flush_arg;
138
139         if (!iwl_mvm_firmware_running(mvm) ||
140             mvm->fwrt.cur_fw_img != IWL_UCODE_REGULAR)
141                 return -EIO;
142
143         if (kstrtou32(buf, 0, &flush_arg))
144                 return -EINVAL;
145
146         if (iwl_mvm_has_new_tx_api(mvm)) {
147                 IWL_DEBUG_TX_QUEUES(mvm,
148                                     "FLUSHING all tids queues on sta_id = %d\n",
149                                     flush_arg);
150                 mutex_lock(&mvm->mutex);
151                 ret = iwl_mvm_flush_sta_tids(mvm, flush_arg, 0xFF, 0) ? : count;
152                 mutex_unlock(&mvm->mutex);
153                 return ret;
154         }
155
156         IWL_DEBUG_TX_QUEUES(mvm, "FLUSHING queues mask to flush = 0x%x\n",
157                             flush_arg);
158
159         mutex_lock(&mvm->mutex);
160         ret =  iwl_mvm_flush_tx_path(mvm, flush_arg, 0) ? : count;
161         mutex_unlock(&mvm->mutex);
162
163         return ret;
164 }
165
166 static ssize_t iwl_dbgfs_sta_drain_write(struct iwl_mvm *mvm, char *buf,
167                                          size_t count, loff_t *ppos)
168 {
169         struct iwl_mvm_sta *mvmsta;
170         int sta_id, drain, ret;
171
172         if (!iwl_mvm_firmware_running(mvm) ||
173             mvm->fwrt.cur_fw_img != IWL_UCODE_REGULAR)
174                 return -EIO;
175
176         if (sscanf(buf, "%d %d", &sta_id, &drain) != 2)
177                 return -EINVAL;
178         if (sta_id < 0 || sta_id >= IWL_MVM_STATION_COUNT)
179                 return -EINVAL;
180         if (drain < 0 || drain > 1)
181                 return -EINVAL;
182
183         mutex_lock(&mvm->mutex);
184
185         mvmsta = iwl_mvm_sta_from_staid_protected(mvm, sta_id);
186
187         if (!mvmsta)
188                 ret = -ENOENT;
189         else
190                 ret = iwl_mvm_drain_sta(mvm, mvmsta, drain) ? : count;
191
192         mutex_unlock(&mvm->mutex);
193
194         return ret;
195 }
196
197 static ssize_t iwl_dbgfs_sram_read(struct file *file, char __user *user_buf,
198                                    size_t count, loff_t *ppos)
199 {
200         struct iwl_mvm *mvm = file->private_data;
201         const struct fw_img *img;
202         unsigned int ofs, len;
203         size_t ret;
204         u8 *ptr;
205
206         if (!iwl_mvm_firmware_running(mvm))
207                 return -EINVAL;
208
209         /* default is to dump the entire data segment */
210         img = &mvm->fw->img[mvm->fwrt.cur_fw_img];
211         ofs = img->sec[IWL_UCODE_SECTION_DATA].offset;
212         len = img->sec[IWL_UCODE_SECTION_DATA].len;
213
214         if (mvm->dbgfs_sram_len) {
215                 ofs = mvm->dbgfs_sram_offset;
216                 len = mvm->dbgfs_sram_len;
217         }
218
219         ptr = kzalloc(len, GFP_KERNEL);
220         if (!ptr)
221                 return -ENOMEM;
222
223         iwl_trans_read_mem_bytes(mvm->trans, ofs, ptr, len);
224
225         ret = simple_read_from_buffer(user_buf, count, ppos, ptr, len);
226
227         kfree(ptr);
228
229         return ret;
230 }
231
232 static ssize_t iwl_dbgfs_sram_write(struct iwl_mvm *mvm, char *buf,
233                                     size_t count, loff_t *ppos)
234 {
235         const struct fw_img *img;
236         u32 offset, len;
237         u32 img_offset, img_len;
238
239         if (!iwl_mvm_firmware_running(mvm))
240                 return -EINVAL;
241
242         img = &mvm->fw->img[mvm->fwrt.cur_fw_img];
243         img_offset = img->sec[IWL_UCODE_SECTION_DATA].offset;
244         img_len = img->sec[IWL_UCODE_SECTION_DATA].len;
245
246         if (sscanf(buf, "%x,%x", &offset, &len) == 2) {
247                 if ((offset & 0x3) || (len & 0x3))
248                         return -EINVAL;
249
250                 if (offset + len > img_offset + img_len)
251                         return -EINVAL;
252
253                 mvm->dbgfs_sram_offset = offset;
254                 mvm->dbgfs_sram_len = len;
255         } else {
256                 mvm->dbgfs_sram_offset = 0;
257                 mvm->dbgfs_sram_len = 0;
258         }
259
260         return count;
261 }
262
263 static ssize_t iwl_dbgfs_set_nic_temperature_read(struct file *file,
264                                                   char __user *user_buf,
265                                                   size_t count, loff_t *ppos)
266 {
267         struct iwl_mvm *mvm = file->private_data;
268         char buf[16];
269         int pos;
270
271         if (!mvm->temperature_test)
272                 pos = scnprintf(buf , sizeof(buf), "disabled\n");
273         else
274                 pos = scnprintf(buf , sizeof(buf), "%d\n", mvm->temperature);
275
276         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
277 }
278
279 /*
280  * Set NIC Temperature
281  * Cause the driver to ignore the actual NIC temperature reported by the FW
282  * Enable: any value between IWL_MVM_DEBUG_SET_TEMPERATURE_MIN -
283  * IWL_MVM_DEBUG_SET_TEMPERATURE_MAX
284  * Disable: IWL_MVM_DEBUG_SET_TEMPERATURE_DISABLE
285  */
286 static ssize_t iwl_dbgfs_set_nic_temperature_write(struct iwl_mvm *mvm,
287                                                    char *buf, size_t count,
288                                                    loff_t *ppos)
289 {
290         int temperature;
291
292         if (!iwl_mvm_firmware_running(mvm) && !mvm->temperature_test)
293                 return -EIO;
294
295         if (kstrtoint(buf, 10, &temperature))
296                 return -EINVAL;
297         /* not a legal temperature */
298         if ((temperature > IWL_MVM_DEBUG_SET_TEMPERATURE_MAX &&
299              temperature != IWL_MVM_DEBUG_SET_TEMPERATURE_DISABLE) ||
300             temperature < IWL_MVM_DEBUG_SET_TEMPERATURE_MIN)
301                 return -EINVAL;
302
303         mutex_lock(&mvm->mutex);
304         if (temperature == IWL_MVM_DEBUG_SET_TEMPERATURE_DISABLE) {
305                 if (!mvm->temperature_test)
306                         goto out;
307
308                 mvm->temperature_test = false;
309                 /* Since we can't read the temp while awake, just set
310                  * it to zero until we get the next RX stats from the
311                  * firmware.
312                  */
313                 mvm->temperature = 0;
314         } else {
315                 mvm->temperature_test = true;
316                 mvm->temperature = temperature;
317         }
318         IWL_DEBUG_TEMP(mvm, "%sabling debug set temperature (temp = %d)\n",
319                        mvm->temperature_test ? "En" : "Dis" ,
320                        mvm->temperature);
321         /* handle the temperature change */
322         iwl_mvm_tt_handler(mvm);
323
324 out:
325         mutex_unlock(&mvm->mutex);
326
327         return count;
328 }
329
330 static ssize_t iwl_dbgfs_nic_temp_read(struct file *file,
331                                        char __user *user_buf,
332                                        size_t count, loff_t *ppos)
333 {
334         struct iwl_mvm *mvm = file->private_data;
335         char buf[16];
336         int pos, ret;
337         s32 temp;
338
339         if (!iwl_mvm_firmware_running(mvm))
340                 return -EIO;
341
342         mutex_lock(&mvm->mutex);
343         ret = iwl_mvm_get_temp(mvm, &temp);
344         mutex_unlock(&mvm->mutex);
345
346         if (ret)
347                 return -EIO;
348
349         pos = scnprintf(buf , sizeof(buf), "%d\n", temp);
350
351         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
352 }
353
354 #ifdef CONFIG_ACPI
355 static ssize_t iwl_dbgfs_sar_geo_profile_read(struct file *file,
356                                               char __user *user_buf,
357                                               size_t count, loff_t *ppos)
358 {
359         struct iwl_mvm *mvm = file->private_data;
360         char buf[256];
361         int pos = 0;
362         int bufsz = sizeof(buf);
363         int tbl_idx;
364         u8 *value;
365
366         if (!iwl_mvm_firmware_running(mvm))
367                 return -EIO;
368
369         mutex_lock(&mvm->mutex);
370         tbl_idx = iwl_mvm_get_sar_geo_profile(mvm);
371         if (tbl_idx < 0) {
372                 mutex_unlock(&mvm->mutex);
373                 return tbl_idx;
374         }
375
376         if (!tbl_idx) {
377                 pos = scnprintf(buf, bufsz,
378                                 "SAR geographic profile disabled\n");
379         } else {
380                 value = &mvm->geo_profiles[tbl_idx - 1].values[0];
381
382                 pos += scnprintf(buf + pos, bufsz - pos,
383                                  "Use geographic profile %d\n", tbl_idx);
384                 pos += scnprintf(buf + pos, bufsz - pos,
385                                  "2.4GHz:\n\tChain A offset: %hhd dBm\n\tChain B offset: %hhd dBm\n\tmax tx power: %hhd dBm\n",
386                                  value[1], value[2], value[0]);
387                 pos += scnprintf(buf + pos, bufsz - pos,
388                                  "5.2GHz:\n\tChain A offset: %hhd dBm\n\tChain B offset: %hhd dBm\n\tmax tx power: %hhd dBm\n",
389                                  value[4], value[5], value[3]);
390         }
391         mutex_unlock(&mvm->mutex);
392
393         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
394 }
395 #endif
396
397 static ssize_t iwl_dbgfs_stations_read(struct file *file, char __user *user_buf,
398                                        size_t count, loff_t *ppos)
399 {
400         struct iwl_mvm *mvm = file->private_data;
401         struct ieee80211_sta *sta;
402         char buf[400];
403         int i, pos = 0, bufsz = sizeof(buf);
404
405         mutex_lock(&mvm->mutex);
406
407         for (i = 0; i < ARRAY_SIZE(mvm->fw_id_to_mac_id); i++) {
408                 pos += scnprintf(buf + pos, bufsz - pos, "%.2d: ", i);
409                 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
410                                                 lockdep_is_held(&mvm->mutex));
411                 if (!sta)
412                         pos += scnprintf(buf + pos, bufsz - pos, "N/A\n");
413                 else if (IS_ERR(sta))
414                         pos += scnprintf(buf + pos, bufsz - pos, "%ld\n",
415                                          PTR_ERR(sta));
416                 else
417                         pos += scnprintf(buf + pos, bufsz - pos, "%pM\n",
418                                          sta->addr);
419         }
420
421         mutex_unlock(&mvm->mutex);
422
423         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
424 }
425
426 static ssize_t iwl_dbgfs_rs_data_read(struct file *file, char __user *user_buf,
427                                       size_t count, loff_t *ppos)
428 {
429         struct ieee80211_sta *sta = file->private_data;
430         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
431         struct iwl_lq_sta_rs_fw *lq_sta = &mvmsta->lq_sta.rs_fw;
432         struct iwl_mvm *mvm = lq_sta->pers.drv;
433         static const size_t bufsz = 2048;
434         char *buff;
435         int desc = 0;
436         ssize_t ret;
437
438         buff = kmalloc(bufsz, GFP_KERNEL);
439         if (!buff)
440                 return -ENOMEM;
441
442         mutex_lock(&mvm->mutex);
443
444         desc += scnprintf(buff + desc, bufsz - desc, "sta_id %d\n",
445                           lq_sta->pers.sta_id);
446         desc += scnprintf(buff + desc, bufsz - desc,
447                           "fixed rate 0x%X\n",
448                           lq_sta->pers.dbg_fixed_rate);
449         desc += scnprintf(buff + desc, bufsz - desc,
450                           "A-MPDU size limit %d\n",
451                           lq_sta->pers.dbg_agg_frame_count_lim);
452         desc += scnprintf(buff + desc, bufsz - desc,
453                           "valid_tx_ant %s%s%s\n",
454                 (iwl_mvm_get_valid_tx_ant(mvm) & ANT_A) ? "ANT_A," : "",
455                 (iwl_mvm_get_valid_tx_ant(mvm) & ANT_B) ? "ANT_B," : "",
456                 (iwl_mvm_get_valid_tx_ant(mvm) & ANT_C) ? "ANT_C" : "");
457         desc += scnprintf(buff + desc, bufsz - desc,
458                           "last tx rate=0x%X ",
459                           lq_sta->last_rate_n_flags);
460
461         desc += rs_pretty_print_rate(buff + desc, bufsz - desc,
462                                      lq_sta->last_rate_n_flags);
463         mutex_unlock(&mvm->mutex);
464
465         ret = simple_read_from_buffer(user_buf, count, ppos, buff, desc);
466         kfree(buff);
467         return ret;
468 }
469
470 static ssize_t iwl_dbgfs_disable_power_off_read(struct file *file,
471                                                 char __user *user_buf,
472                                                 size_t count, loff_t *ppos)
473 {
474         struct iwl_mvm *mvm = file->private_data;
475         char buf[64];
476         int bufsz = sizeof(buf);
477         int pos = 0;
478
479         pos += scnprintf(buf+pos, bufsz-pos, "disable_power_off_d0=%d\n",
480                          mvm->disable_power_off);
481         pos += scnprintf(buf+pos, bufsz-pos, "disable_power_off_d3=%d\n",
482                          mvm->disable_power_off_d3);
483
484         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
485 }
486
487 static ssize_t iwl_dbgfs_disable_power_off_write(struct iwl_mvm *mvm, char *buf,
488                                                  size_t count, loff_t *ppos)
489 {
490         int ret, val;
491
492         if (!iwl_mvm_firmware_running(mvm))
493                 return -EIO;
494
495         if (!strncmp("disable_power_off_d0=", buf, 21)) {
496                 if (sscanf(buf + 21, "%d", &val) != 1)
497                         return -EINVAL;
498                 mvm->disable_power_off = val;
499         } else if (!strncmp("disable_power_off_d3=", buf, 21)) {
500                 if (sscanf(buf + 21, "%d", &val) != 1)
501                         return -EINVAL;
502                 mvm->disable_power_off_d3 = val;
503         } else {
504                 return -EINVAL;
505         }
506
507         mutex_lock(&mvm->mutex);
508         ret = iwl_mvm_power_update_device(mvm);
509         mutex_unlock(&mvm->mutex);
510
511         return ret ?: count;
512 }
513
514 static
515 int iwl_mvm_coex_dump_mbox(struct iwl_bt_coex_profile_notif *notif, char *buf,
516                            int pos, int bufsz)
517 {
518         pos += scnprintf(buf+pos, bufsz-pos, "MBOX dw0:\n");
519
520         BT_MBOX_PRINT(0, LE_SLAVE_LAT, false);
521         BT_MBOX_PRINT(0, LE_PROF1, false);
522         BT_MBOX_PRINT(0, LE_PROF2, false);
523         BT_MBOX_PRINT(0, LE_PROF_OTHER, false);
524         BT_MBOX_PRINT(0, CHL_SEQ_N, false);
525         BT_MBOX_PRINT(0, INBAND_S, false);
526         BT_MBOX_PRINT(0, LE_MIN_RSSI, false);
527         BT_MBOX_PRINT(0, LE_SCAN, false);
528         BT_MBOX_PRINT(0, LE_ADV, false);
529         BT_MBOX_PRINT(0, LE_MAX_TX_POWER, false);
530         BT_MBOX_PRINT(0, OPEN_CON_1, true);
531
532         pos += scnprintf(buf+pos, bufsz-pos, "MBOX dw1:\n");
533
534         BT_MBOX_PRINT(1, BR_MAX_TX_POWER, false);
535         BT_MBOX_PRINT(1, IP_SR, false);
536         BT_MBOX_PRINT(1, LE_MSTR, false);
537         BT_MBOX_PRINT(1, AGGR_TRFC_LD, false);
538         BT_MBOX_PRINT(1, MSG_TYPE, false);
539         BT_MBOX_PRINT(1, SSN, true);
540
541         pos += scnprintf(buf+pos, bufsz-pos, "MBOX dw2:\n");
542
543         BT_MBOX_PRINT(2, SNIFF_ACT, false);
544         BT_MBOX_PRINT(2, PAG, false);
545         BT_MBOX_PRINT(2, INQUIRY, false);
546         BT_MBOX_PRINT(2, CONN, false);
547         BT_MBOX_PRINT(2, SNIFF_INTERVAL, false);
548         BT_MBOX_PRINT(2, DISC, false);
549         BT_MBOX_PRINT(2, SCO_TX_ACT, false);
550         BT_MBOX_PRINT(2, SCO_RX_ACT, false);
551         BT_MBOX_PRINT(2, ESCO_RE_TX, false);
552         BT_MBOX_PRINT(2, SCO_DURATION, true);
553
554         pos += scnprintf(buf+pos, bufsz-pos, "MBOX dw3:\n");
555
556         BT_MBOX_PRINT(3, SCO_STATE, false);
557         BT_MBOX_PRINT(3, SNIFF_STATE, false);
558         BT_MBOX_PRINT(3, A2DP_STATE, false);
559         BT_MBOX_PRINT(3, A2DP_SRC, false);
560         BT_MBOX_PRINT(3, ACL_STATE, false);
561         BT_MBOX_PRINT(3, MSTR_STATE, false);
562         BT_MBOX_PRINT(3, OBX_STATE, false);
563         BT_MBOX_PRINT(3, OPEN_CON_2, false);
564         BT_MBOX_PRINT(3, TRAFFIC_LOAD, false);
565         BT_MBOX_PRINT(3, CHL_SEQN_LSB, false);
566         BT_MBOX_PRINT(3, INBAND_P, false);
567         BT_MBOX_PRINT(3, MSG_TYPE_2, false);
568         BT_MBOX_PRINT(3, SSN_2, false);
569         BT_MBOX_PRINT(3, UPDATE_REQUEST, true);
570
571         return pos;
572 }
573
574 static ssize_t iwl_dbgfs_bt_notif_read(struct file *file, char __user *user_buf,
575                                        size_t count, loff_t *ppos)
576 {
577         struct iwl_mvm *mvm = file->private_data;
578         struct iwl_bt_coex_profile_notif *notif = &mvm->last_bt_notif;
579         char *buf;
580         int ret, pos = 0, bufsz = sizeof(char) * 1024;
581
582         buf = kmalloc(bufsz, GFP_KERNEL);
583         if (!buf)
584                 return -ENOMEM;
585
586         mutex_lock(&mvm->mutex);
587
588         pos += iwl_mvm_coex_dump_mbox(notif, buf, pos, bufsz);
589
590         pos += scnprintf(buf + pos, bufsz - pos, "bt_ci_compliance = %d\n",
591                          notif->bt_ci_compliance);
592         pos += scnprintf(buf + pos, bufsz - pos, "primary_ch_lut = %d\n",
593                          le32_to_cpu(notif->primary_ch_lut));
594         pos += scnprintf(buf + pos, bufsz - pos, "secondary_ch_lut = %d\n",
595                          le32_to_cpu(notif->secondary_ch_lut));
596         pos += scnprintf(buf + pos,
597                          bufsz - pos, "bt_activity_grading = %d\n",
598                          le32_to_cpu(notif->bt_activity_grading));
599         pos += scnprintf(buf + pos, bufsz - pos, "bt_rrc = %d\n",
600                          notif->rrc_status & 0xF);
601         pos += scnprintf(buf + pos, bufsz - pos, "bt_ttc = %d\n",
602                          notif->ttc_status & 0xF);
603
604         pos += scnprintf(buf + pos, bufsz - pos, "sync_sco = %d\n",
605                          IWL_MVM_BT_COEX_SYNC2SCO);
606         pos += scnprintf(buf + pos, bufsz - pos, "mplut = %d\n",
607                          IWL_MVM_BT_COEX_MPLUT);
608
609         mutex_unlock(&mvm->mutex);
610
611         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
612         kfree(buf);
613
614         return ret;
615 }
616 #undef BT_MBOX_PRINT
617
618 static ssize_t iwl_dbgfs_bt_cmd_read(struct file *file, char __user *user_buf,
619                                      size_t count, loff_t *ppos)
620 {
621         struct iwl_mvm *mvm = file->private_data;
622         struct iwl_bt_coex_ci_cmd *cmd = &mvm->last_bt_ci_cmd;
623         char buf[256];
624         int bufsz = sizeof(buf);
625         int pos = 0;
626
627         mutex_lock(&mvm->mutex);
628
629         pos += scnprintf(buf + pos, bufsz - pos, "Channel inhibition CMD\n");
630         pos += scnprintf(buf + pos, bufsz - pos,
631                          "\tPrimary Channel Bitmap 0x%016llx\n",
632                          le64_to_cpu(cmd->bt_primary_ci));
633         pos += scnprintf(buf + pos, bufsz - pos,
634                          "\tSecondary Channel Bitmap 0x%016llx\n",
635                          le64_to_cpu(cmd->bt_secondary_ci));
636
637         mutex_unlock(&mvm->mutex);
638
639         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
640 }
641
642 static ssize_t
643 iwl_dbgfs_bt_tx_prio_write(struct iwl_mvm *mvm, char *buf,
644                            size_t count, loff_t *ppos)
645 {
646         u32 bt_tx_prio;
647
648         if (sscanf(buf, "%u", &bt_tx_prio) != 1)
649                 return -EINVAL;
650         if (bt_tx_prio > 4)
651                 return -EINVAL;
652
653         mvm->bt_tx_prio = bt_tx_prio;
654
655         return count;
656 }
657
658 static ssize_t
659 iwl_dbgfs_bt_force_ant_write(struct iwl_mvm *mvm, char *buf,
660                              size_t count, loff_t *ppos)
661 {
662         static const char * const modes_str[BT_FORCE_ANT_MAX] = {
663                 [BT_FORCE_ANT_DIS] = "dis",
664                 [BT_FORCE_ANT_AUTO] = "auto",
665                 [BT_FORCE_ANT_BT] = "bt",
666                 [BT_FORCE_ANT_WIFI] = "wifi",
667         };
668         int ret, bt_force_ant_mode;
669
670         ret = match_string(modes_str, ARRAY_SIZE(modes_str), buf);
671         if (ret < 0)
672                 return ret;
673
674         bt_force_ant_mode = ret;
675         ret = 0;
676         mutex_lock(&mvm->mutex);
677         if (mvm->bt_force_ant_mode == bt_force_ant_mode)
678                 goto out;
679
680         mvm->bt_force_ant_mode = bt_force_ant_mode;
681         IWL_DEBUG_COEX(mvm, "Force mode: %s\n",
682                        modes_str[mvm->bt_force_ant_mode]);
683
684         if (iwl_mvm_firmware_running(mvm))
685                 ret = iwl_mvm_send_bt_init_conf(mvm);
686         else
687                 ret = 0;
688
689 out:
690         mutex_unlock(&mvm->mutex);
691         return ret ?: count;
692 }
693
694 static ssize_t iwl_dbgfs_fw_ver_read(struct file *file, char __user *user_buf,
695                                      size_t count, loff_t *ppos)
696 {
697         struct iwl_mvm *mvm = file->private_data;
698         char *buff, *pos, *endpos;
699         static const size_t bufsz = 1024;
700         int ret;
701
702         buff = kmalloc(bufsz, GFP_KERNEL);
703         if (!buff)
704                 return -ENOMEM;
705
706         pos = buff;
707         endpos = pos + bufsz;
708
709         pos += scnprintf(pos, endpos - pos, "FW prefix: %s\n",
710                          mvm->trans->cfg->fw_name_pre);
711         pos += scnprintf(pos, endpos - pos, "FW: %s\n",
712                          mvm->fwrt.fw->human_readable);
713         pos += scnprintf(pos, endpos - pos, "Device: %s\n",
714                          mvm->fwrt.trans->cfg->name);
715         pos += scnprintf(pos, endpos - pos, "Bus: %s\n",
716                          mvm->fwrt.dev->bus->name);
717
718         ret = simple_read_from_buffer(user_buf, count, ppos, buff, pos - buff);
719         kfree(buff);
720
721         return ret;
722 }
723
724 #define PRINT_STATS_LE32(_struct, _memb)                                \
725                          pos += scnprintf(buf + pos, bufsz - pos,       \
726                                           fmt_table, #_memb,            \
727                                           le32_to_cpu(_struct->_memb))
728
729 static ssize_t iwl_dbgfs_fw_rx_stats_read(struct file *file,
730                                           char __user *user_buf, size_t count,
731                                           loff_t *ppos)
732 {
733         struct iwl_mvm *mvm = file->private_data;
734         static const char *fmt_table = "\t%-30s %10u\n";
735         static const char *fmt_header = "%-32s\n";
736         int pos = 0;
737         char *buf;
738         int ret;
739         size_t bufsz;
740
741         if (iwl_mvm_has_new_rx_stats_api(mvm))
742                 bufsz = ((sizeof(struct mvm_statistics_rx) /
743                           sizeof(__le32)) * 43) + (4 * 33) + 1;
744         else
745                 /* 43 = size of each data line; 33 = size of each header */
746                 bufsz = ((sizeof(struct mvm_statistics_rx_v3) /
747                           sizeof(__le32)) * 43) + (4 * 33) + 1;
748
749         buf = kzalloc(bufsz, GFP_KERNEL);
750         if (!buf)
751                 return -ENOMEM;
752
753         mutex_lock(&mvm->mutex);
754
755         if (iwl_mvm_firmware_running(mvm))
756                 iwl_mvm_request_statistics(mvm, false);
757
758         pos += scnprintf(buf + pos, bufsz - pos, fmt_header,
759                          "Statistics_Rx - OFDM");
760         if (!iwl_mvm_has_new_rx_stats_api(mvm)) {
761                 struct mvm_statistics_rx_phy_v2 *ofdm = &mvm->rx_stats_v3.ofdm;
762
763                 PRINT_STATS_LE32(ofdm, ina_cnt);
764                 PRINT_STATS_LE32(ofdm, fina_cnt);
765                 PRINT_STATS_LE32(ofdm, plcp_err);
766                 PRINT_STATS_LE32(ofdm, crc32_err);
767                 PRINT_STATS_LE32(ofdm, overrun_err);
768                 PRINT_STATS_LE32(ofdm, early_overrun_err);
769                 PRINT_STATS_LE32(ofdm, crc32_good);
770                 PRINT_STATS_LE32(ofdm, false_alarm_cnt);
771                 PRINT_STATS_LE32(ofdm, fina_sync_err_cnt);
772                 PRINT_STATS_LE32(ofdm, sfd_timeout);
773                 PRINT_STATS_LE32(ofdm, fina_timeout);
774                 PRINT_STATS_LE32(ofdm, unresponded_rts);
775                 PRINT_STATS_LE32(ofdm, rxe_frame_lmt_overrun);
776                 PRINT_STATS_LE32(ofdm, sent_ack_cnt);
777                 PRINT_STATS_LE32(ofdm, sent_cts_cnt);
778                 PRINT_STATS_LE32(ofdm, sent_ba_rsp_cnt);
779                 PRINT_STATS_LE32(ofdm, dsp_self_kill);
780                 PRINT_STATS_LE32(ofdm, mh_format_err);
781                 PRINT_STATS_LE32(ofdm, re_acq_main_rssi_sum);
782                 PRINT_STATS_LE32(ofdm, reserved);
783         } else {
784                 struct mvm_statistics_rx_phy *ofdm = &mvm->rx_stats.ofdm;
785
786                 PRINT_STATS_LE32(ofdm, unresponded_rts);
787                 PRINT_STATS_LE32(ofdm, rxe_frame_lmt_overrun);
788                 PRINT_STATS_LE32(ofdm, sent_ba_rsp_cnt);
789                 PRINT_STATS_LE32(ofdm, dsp_self_kill);
790                 PRINT_STATS_LE32(ofdm, reserved);
791         }
792
793         pos += scnprintf(buf + pos, bufsz - pos, fmt_header,
794                          "Statistics_Rx - CCK");
795         if (!iwl_mvm_has_new_rx_stats_api(mvm)) {
796                 struct mvm_statistics_rx_phy_v2 *cck = &mvm->rx_stats_v3.cck;
797
798                 PRINT_STATS_LE32(cck, ina_cnt);
799                 PRINT_STATS_LE32(cck, fina_cnt);
800                 PRINT_STATS_LE32(cck, plcp_err);
801                 PRINT_STATS_LE32(cck, crc32_err);
802                 PRINT_STATS_LE32(cck, overrun_err);
803                 PRINT_STATS_LE32(cck, early_overrun_err);
804                 PRINT_STATS_LE32(cck, crc32_good);
805                 PRINT_STATS_LE32(cck, false_alarm_cnt);
806                 PRINT_STATS_LE32(cck, fina_sync_err_cnt);
807                 PRINT_STATS_LE32(cck, sfd_timeout);
808                 PRINT_STATS_LE32(cck, fina_timeout);
809                 PRINT_STATS_LE32(cck, unresponded_rts);
810                 PRINT_STATS_LE32(cck, rxe_frame_lmt_overrun);
811                 PRINT_STATS_LE32(cck, sent_ack_cnt);
812                 PRINT_STATS_LE32(cck, sent_cts_cnt);
813                 PRINT_STATS_LE32(cck, sent_ba_rsp_cnt);
814                 PRINT_STATS_LE32(cck, dsp_self_kill);
815                 PRINT_STATS_LE32(cck, mh_format_err);
816                 PRINT_STATS_LE32(cck, re_acq_main_rssi_sum);
817                 PRINT_STATS_LE32(cck, reserved);
818         } else {
819                 struct mvm_statistics_rx_phy *cck = &mvm->rx_stats.cck;
820
821                 PRINT_STATS_LE32(cck, unresponded_rts);
822                 PRINT_STATS_LE32(cck, rxe_frame_lmt_overrun);
823                 PRINT_STATS_LE32(cck, sent_ba_rsp_cnt);
824                 PRINT_STATS_LE32(cck, dsp_self_kill);
825                 PRINT_STATS_LE32(cck, reserved);
826         }
827
828         pos += scnprintf(buf + pos, bufsz - pos, fmt_header,
829                          "Statistics_Rx - GENERAL");
830         if (!iwl_mvm_has_new_rx_stats_api(mvm)) {
831                 struct mvm_statistics_rx_non_phy_v3 *general =
832                         &mvm->rx_stats_v3.general;
833
834                 PRINT_STATS_LE32(general, bogus_cts);
835                 PRINT_STATS_LE32(general, bogus_ack);
836                 PRINT_STATS_LE32(general, non_bssid_frames);
837                 PRINT_STATS_LE32(general, filtered_frames);
838                 PRINT_STATS_LE32(general, non_channel_beacons);
839                 PRINT_STATS_LE32(general, channel_beacons);
840                 PRINT_STATS_LE32(general, num_missed_bcon);
841                 PRINT_STATS_LE32(general, adc_rx_saturation_time);
842                 PRINT_STATS_LE32(general, ina_detection_search_time);
843                 PRINT_STATS_LE32(general, beacon_silence_rssi_a);
844                 PRINT_STATS_LE32(general, beacon_silence_rssi_b);
845                 PRINT_STATS_LE32(general, beacon_silence_rssi_c);
846                 PRINT_STATS_LE32(general, interference_data_flag);
847                 PRINT_STATS_LE32(general, channel_load);
848                 PRINT_STATS_LE32(general, dsp_false_alarms);
849                 PRINT_STATS_LE32(general, beacon_rssi_a);
850                 PRINT_STATS_LE32(general, beacon_rssi_b);
851                 PRINT_STATS_LE32(general, beacon_rssi_c);
852                 PRINT_STATS_LE32(general, beacon_energy_a);
853                 PRINT_STATS_LE32(general, beacon_energy_b);
854                 PRINT_STATS_LE32(general, beacon_energy_c);
855                 PRINT_STATS_LE32(general, num_bt_kills);
856                 PRINT_STATS_LE32(general, mac_id);
857                 PRINT_STATS_LE32(general, directed_data_mpdu);
858         } else {
859                 struct mvm_statistics_rx_non_phy *general =
860                         &mvm->rx_stats.general;
861
862                 PRINT_STATS_LE32(general, bogus_cts);
863                 PRINT_STATS_LE32(general, bogus_ack);
864                 PRINT_STATS_LE32(general, non_channel_beacons);
865                 PRINT_STATS_LE32(general, channel_beacons);
866                 PRINT_STATS_LE32(general, num_missed_bcon);
867                 PRINT_STATS_LE32(general, adc_rx_saturation_time);
868                 PRINT_STATS_LE32(general, ina_detection_search_time);
869                 PRINT_STATS_LE32(general, beacon_silence_rssi_a);
870                 PRINT_STATS_LE32(general, beacon_silence_rssi_b);
871                 PRINT_STATS_LE32(general, beacon_silence_rssi_c);
872                 PRINT_STATS_LE32(general, interference_data_flag);
873                 PRINT_STATS_LE32(general, channel_load);
874                 PRINT_STATS_LE32(general, beacon_rssi_a);
875                 PRINT_STATS_LE32(general, beacon_rssi_b);
876                 PRINT_STATS_LE32(general, beacon_rssi_c);
877                 PRINT_STATS_LE32(general, beacon_energy_a);
878                 PRINT_STATS_LE32(general, beacon_energy_b);
879                 PRINT_STATS_LE32(general, beacon_energy_c);
880                 PRINT_STATS_LE32(general, num_bt_kills);
881                 PRINT_STATS_LE32(general, mac_id);
882         }
883
884         pos += scnprintf(buf + pos, bufsz - pos, fmt_header,
885                          "Statistics_Rx - HT");
886         if (!iwl_mvm_has_new_rx_stats_api(mvm)) {
887                 struct mvm_statistics_rx_ht_phy_v1 *ht =
888                         &mvm->rx_stats_v3.ofdm_ht;
889
890                 PRINT_STATS_LE32(ht, plcp_err);
891                 PRINT_STATS_LE32(ht, overrun_err);
892                 PRINT_STATS_LE32(ht, early_overrun_err);
893                 PRINT_STATS_LE32(ht, crc32_good);
894                 PRINT_STATS_LE32(ht, crc32_err);
895                 PRINT_STATS_LE32(ht, mh_format_err);
896                 PRINT_STATS_LE32(ht, agg_crc32_good);
897                 PRINT_STATS_LE32(ht, agg_mpdu_cnt);
898                 PRINT_STATS_LE32(ht, agg_cnt);
899                 PRINT_STATS_LE32(ht, unsupport_mcs);
900         } else {
901                 struct mvm_statistics_rx_ht_phy *ht =
902                         &mvm->rx_stats.ofdm_ht;
903
904                 PRINT_STATS_LE32(ht, mh_format_err);
905                 PRINT_STATS_LE32(ht, agg_mpdu_cnt);
906                 PRINT_STATS_LE32(ht, agg_cnt);
907                 PRINT_STATS_LE32(ht, unsupport_mcs);
908         }
909
910         mutex_unlock(&mvm->mutex);
911
912         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
913         kfree(buf);
914
915         return ret;
916 }
917 #undef PRINT_STAT_LE32
918
919 static ssize_t iwl_dbgfs_frame_stats_read(struct iwl_mvm *mvm,
920                                           char __user *user_buf, size_t count,
921                                           loff_t *ppos,
922                                           struct iwl_mvm_frame_stats *stats)
923 {
924         char *buff, *pos, *endpos;
925         int idx, i;
926         int ret;
927         static const size_t bufsz = 1024;
928
929         buff = kmalloc(bufsz, GFP_KERNEL);
930         if (!buff)
931                 return -ENOMEM;
932
933         spin_lock_bh(&mvm->drv_stats_lock);
934
935         pos = buff;
936         endpos = pos + bufsz;
937
938         pos += scnprintf(pos, endpos - pos,
939                          "Legacy/HT/VHT\t:\t%d/%d/%d\n",
940                          stats->legacy_frames,
941                          stats->ht_frames,
942                          stats->vht_frames);
943         pos += scnprintf(pos, endpos - pos, "20/40/80\t:\t%d/%d/%d\n",
944                          stats->bw_20_frames,
945                          stats->bw_40_frames,
946                          stats->bw_80_frames);
947         pos += scnprintf(pos, endpos - pos, "NGI/SGI\t\t:\t%d/%d\n",
948                          stats->ngi_frames,
949                          stats->sgi_frames);
950         pos += scnprintf(pos, endpos - pos, "SISO/MIMO2\t:\t%d/%d\n",
951                          stats->siso_frames,
952                          stats->mimo2_frames);
953         pos += scnprintf(pos, endpos - pos, "FAIL/SCSS\t:\t%d/%d\n",
954                          stats->fail_frames,
955                          stats->success_frames);
956         pos += scnprintf(pos, endpos - pos, "MPDUs agg\t:\t%d\n",
957                          stats->agg_frames);
958         pos += scnprintf(pos, endpos - pos, "A-MPDUs\t\t:\t%d\n",
959                          stats->ampdu_count);
960         pos += scnprintf(pos, endpos - pos, "Avg MPDUs/A-MPDU:\t%d\n",
961                          stats->ampdu_count > 0 ?
962                          (stats->agg_frames / stats->ampdu_count) : 0);
963
964         pos += scnprintf(pos, endpos - pos, "Last Rates\n");
965
966         idx = stats->last_frame_idx - 1;
967         for (i = 0; i < ARRAY_SIZE(stats->last_rates); i++) {
968                 idx = (idx + 1) % ARRAY_SIZE(stats->last_rates);
969                 if (stats->last_rates[idx] == 0)
970                         continue;
971                 pos += scnprintf(pos, endpos - pos, "Rate[%d]: ",
972                                  (int)(ARRAY_SIZE(stats->last_rates) - i));
973                 pos += rs_pretty_print_rate(pos, endpos - pos,
974                                             stats->last_rates[idx]);
975         }
976         spin_unlock_bh(&mvm->drv_stats_lock);
977
978         ret = simple_read_from_buffer(user_buf, count, ppos, buff, pos - buff);
979         kfree(buff);
980
981         return ret;
982 }
983
984 static ssize_t iwl_dbgfs_drv_rx_stats_read(struct file *file,
985                                            char __user *user_buf, size_t count,
986                                            loff_t *ppos)
987 {
988         struct iwl_mvm *mvm = file->private_data;
989
990         return iwl_dbgfs_frame_stats_read(mvm, user_buf, count, ppos,
991                                           &mvm->drv_rx_stats);
992 }
993
994 static ssize_t iwl_dbgfs_fw_restart_write(struct iwl_mvm *mvm, char *buf,
995                                           size_t count, loff_t *ppos)
996 {
997         int __maybe_unused ret;
998
999         if (!iwl_mvm_firmware_running(mvm))
1000                 return -EIO;
1001
1002         mutex_lock(&mvm->mutex);
1003
1004         /* allow one more restart that we're provoking here */
1005         if (mvm->fw_restart >= 0)
1006                 mvm->fw_restart++;
1007
1008         /* take the return value to make compiler happy - it will fail anyway */
1009         ret = iwl_mvm_send_cmd_pdu(mvm, REPLY_ERROR, 0, 0, NULL);
1010
1011         mutex_unlock(&mvm->mutex);
1012
1013         return count;
1014 }
1015
1016 static ssize_t iwl_dbgfs_fw_nmi_write(struct iwl_mvm *mvm, char *buf,
1017                                       size_t count, loff_t *ppos)
1018 {
1019         int ret;
1020
1021         if (!iwl_mvm_firmware_running(mvm))
1022                 return -EIO;
1023
1024         ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_NMI);
1025         if (ret)
1026                 return ret;
1027
1028         iwl_force_nmi(mvm->trans);
1029
1030         iwl_mvm_unref(mvm, IWL_MVM_REF_NMI);
1031
1032         return count;
1033 }
1034
1035 static ssize_t
1036 iwl_dbgfs_scan_ant_rxchain_read(struct file *file,
1037                                 char __user *user_buf,
1038                                 size_t count, loff_t *ppos)
1039 {
1040         struct iwl_mvm *mvm = file->private_data;
1041         int pos = 0;
1042         char buf[32];
1043         const size_t bufsz = sizeof(buf);
1044
1045         /* print which antennas were set for the scan command by the user */
1046         pos += scnprintf(buf + pos, bufsz - pos, "Antennas for scan: ");
1047         if (mvm->scan_rx_ant & ANT_A)
1048                 pos += scnprintf(buf + pos, bufsz - pos, "A");
1049         if (mvm->scan_rx_ant & ANT_B)
1050                 pos += scnprintf(buf + pos, bufsz - pos, "B");
1051         if (mvm->scan_rx_ant & ANT_C)
1052                 pos += scnprintf(buf + pos, bufsz - pos, "C");
1053         pos += scnprintf(buf + pos, bufsz - pos, " (%hhx)\n", mvm->scan_rx_ant);
1054
1055         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
1056 }
1057
1058 static ssize_t
1059 iwl_dbgfs_scan_ant_rxchain_write(struct iwl_mvm *mvm, char *buf,
1060                                  size_t count, loff_t *ppos)
1061 {
1062         u8 scan_rx_ant;
1063
1064         if (!iwl_mvm_firmware_running(mvm))
1065                 return -EIO;
1066
1067         if (sscanf(buf, "%hhx", &scan_rx_ant) != 1)
1068                 return -EINVAL;
1069         if (scan_rx_ant > ANT_ABC)
1070                 return -EINVAL;
1071         if (scan_rx_ant & ~(iwl_mvm_get_valid_rx_ant(mvm)))
1072                 return -EINVAL;
1073
1074         if (mvm->scan_rx_ant != scan_rx_ant) {
1075                 mvm->scan_rx_ant = scan_rx_ant;
1076                 if (fw_has_capa(&mvm->fw->ucode_capa,
1077                                 IWL_UCODE_TLV_CAPA_UMAC_SCAN))
1078                         iwl_mvm_config_scan(mvm);
1079         }
1080
1081         return count;
1082 }
1083
1084 static ssize_t iwl_dbgfs_indirection_tbl_write(struct iwl_mvm *mvm,
1085                                                char *buf, size_t count,
1086                                                loff_t *ppos)
1087 {
1088         struct iwl_rss_config_cmd cmd = {
1089                 .flags = cpu_to_le32(IWL_RSS_ENABLE),
1090                 .hash_mask = IWL_RSS_HASH_TYPE_IPV4_TCP |
1091                              IWL_RSS_HASH_TYPE_IPV4_UDP |
1092                              IWL_RSS_HASH_TYPE_IPV4_PAYLOAD |
1093                              IWL_RSS_HASH_TYPE_IPV6_TCP |
1094                              IWL_RSS_HASH_TYPE_IPV6_UDP |
1095                              IWL_RSS_HASH_TYPE_IPV6_PAYLOAD,
1096         };
1097         int ret, i, num_repeats, nbytes = count / 2;
1098
1099         ret = hex2bin(cmd.indirection_table, buf, nbytes);
1100         if (ret)
1101                 return ret;
1102
1103         /*
1104          * The input is the redirection table, partial or full.
1105          * Repeat the pattern if needed.
1106          * For example, input of 01020F will be repeated 42 times,
1107          * indirecting RSS hash results to queues 1, 2, 15 (skipping
1108          * queues 3 - 14).
1109          */
1110         num_repeats = ARRAY_SIZE(cmd.indirection_table) / nbytes;
1111         for (i = 1; i < num_repeats; i++)
1112                 memcpy(&cmd.indirection_table[i * nbytes],
1113                        cmd.indirection_table, nbytes);
1114         /* handle cut in the middle pattern for the last places */
1115         memcpy(&cmd.indirection_table[i * nbytes], cmd.indirection_table,
1116                ARRAY_SIZE(cmd.indirection_table) % nbytes);
1117
1118         netdev_rss_key_fill(cmd.secret_key, sizeof(cmd.secret_key));
1119
1120         mutex_lock(&mvm->mutex);
1121         if (iwl_mvm_firmware_running(mvm))
1122                 ret = iwl_mvm_send_cmd_pdu(mvm, RSS_CONFIG_CMD, 0,
1123                                            sizeof(cmd), &cmd);
1124         else
1125                 ret = 0;
1126         mutex_unlock(&mvm->mutex);
1127
1128         return ret ?: count;
1129 }
1130
1131 static ssize_t iwl_dbgfs_inject_packet_write(struct iwl_mvm *mvm,
1132                                              char *buf, size_t count,
1133                                              loff_t *ppos)
1134 {
1135         struct iwl_rx_cmd_buffer rxb = {
1136                 ._rx_page_order = 0,
1137                 .truesize = 0, /* not used */
1138                 ._offset = 0,
1139         };
1140         struct iwl_rx_packet *pkt;
1141         struct iwl_rx_mpdu_desc *desc;
1142         int bin_len = count / 2;
1143         int ret = -EINVAL;
1144         size_t mpdu_cmd_hdr_size =
1145                 (mvm->trans->cfg->device_family >= IWL_DEVICE_FAMILY_22560) ?
1146                 sizeof(struct iwl_rx_mpdu_desc) :
1147                 IWL_RX_DESC_SIZE_V1;
1148
1149         if (!iwl_mvm_firmware_running(mvm))
1150                 return -EIO;
1151
1152         /* supporting only 9000 descriptor */
1153         if (!mvm->trans->cfg->mq_rx_supported)
1154                 return -ENOTSUPP;
1155
1156         rxb._page = alloc_pages(GFP_ATOMIC, 0);
1157         if (!rxb._page)
1158                 return -ENOMEM;
1159         pkt = rxb_addr(&rxb);
1160
1161         ret = hex2bin(page_address(rxb._page), buf, bin_len);
1162         if (ret)
1163                 goto out;
1164
1165         /* avoid invalid memory access */
1166         if (bin_len < sizeof(*pkt) + mpdu_cmd_hdr_size)
1167                 goto out;
1168
1169         /* check this is RX packet */
1170         if (WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd) !=
1171             WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD))
1172                 goto out;
1173
1174         /* check the length in metadata matches actual received length */
1175         desc = (void *)pkt->data;
1176         if (le16_to_cpu(desc->mpdu_len) !=
1177             (bin_len - mpdu_cmd_hdr_size - sizeof(*pkt)))
1178                 goto out;
1179
1180         local_bh_disable();
1181         iwl_mvm_rx_mpdu_mq(mvm, NULL, &rxb, 0);
1182         local_bh_enable();
1183         ret = 0;
1184
1185 out:
1186         iwl_free_rxb(&rxb);
1187
1188         return ret ?: count;
1189 }
1190
1191 static int _iwl_dbgfs_inject_beacon_ie(struct iwl_mvm *mvm, char *bin, int len)
1192 {
1193         struct ieee80211_vif *vif;
1194         struct iwl_mvm_vif *mvmvif;
1195         struct sk_buff *beacon;
1196         struct ieee80211_tx_info *info;
1197         struct iwl_mac_beacon_cmd beacon_cmd = {};
1198         u8 rate;
1199         u16 flags;
1200         int i;
1201
1202         len /= 2;
1203
1204         /* Element len should be represented by u8 */
1205         if (len >= U8_MAX)
1206                 return -EINVAL;
1207
1208         if (!iwl_mvm_firmware_running(mvm))
1209                 return -EIO;
1210
1211         if (!iwl_mvm_has_new_tx_api(mvm) &&
1212             !fw_has_api(&mvm->fw->ucode_capa,
1213                         IWL_UCODE_TLV_API_NEW_BEACON_TEMPLATE))
1214                 return -EINVAL;
1215
1216         rcu_read_lock();
1217
1218         for (i = 0; i < NUM_MAC_INDEX_DRIVER; i++) {
1219                 vif = iwl_mvm_rcu_dereference_vif_id(mvm, i, true);
1220                 if (!vif)
1221                         continue;
1222
1223                 if (vif->type == NL80211_IFTYPE_AP)
1224                         break;
1225         }
1226
1227         if (i == NUM_MAC_INDEX_DRIVER || !vif)
1228                 goto out_err;
1229
1230         mvm->hw->extra_beacon_tailroom = len;
1231
1232         beacon = ieee80211_beacon_get_template(mvm->hw, vif, NULL);
1233         if (!beacon)
1234                 goto out_err;
1235
1236         if (len && hex2bin(skb_put_zero(beacon, len), bin, len)) {
1237                 dev_kfree_skb(beacon);
1238                 goto out_err;
1239         }
1240
1241         mvm->beacon_inject_active = true;
1242
1243         mvmvif = iwl_mvm_vif_from_mac80211(vif);
1244         info = IEEE80211_SKB_CB(beacon);
1245         rate = iwl_mvm_mac_ctxt_get_lowest_rate(info, vif);
1246         flags = iwl_mvm_mac80211_idx_to_hwrate(rate);
1247
1248         if (rate == IWL_FIRST_CCK_RATE)
1249                 flags |= IWL_MAC_BEACON_CCK;
1250
1251         beacon_cmd.flags = cpu_to_le16(flags);
1252         beacon_cmd.byte_cnt = cpu_to_le16((u16)beacon->len);
1253         beacon_cmd.template_id = cpu_to_le32((u32)mvmvif->id);
1254
1255         iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd.tim_idx,
1256                                  &beacon_cmd.tim_size,
1257                                  beacon->data, beacon->len);
1258
1259         mutex_lock(&mvm->mutex);
1260         iwl_mvm_mac_ctxt_send_beacon_cmd(mvm, beacon, &beacon_cmd,
1261                                          sizeof(beacon_cmd));
1262         mutex_unlock(&mvm->mutex);
1263
1264         dev_kfree_skb(beacon);
1265
1266         rcu_read_unlock();
1267         return 0;
1268
1269 out_err:
1270         rcu_read_unlock();
1271         return -EINVAL;
1272 }
1273
1274 static ssize_t iwl_dbgfs_inject_beacon_ie_write(struct iwl_mvm *mvm,
1275                                                 char *buf, size_t count,
1276                                                 loff_t *ppos)
1277 {
1278         int ret = _iwl_dbgfs_inject_beacon_ie(mvm, buf, count);
1279
1280         mvm->hw->extra_beacon_tailroom = 0;
1281         return ret ?: count;
1282 }
1283
1284 static ssize_t iwl_dbgfs_inject_beacon_ie_restore_write(struct iwl_mvm *mvm,
1285                                                         char *buf,
1286                                                         size_t count,
1287                                                         loff_t *ppos)
1288 {
1289         int ret = _iwl_dbgfs_inject_beacon_ie(mvm, NULL, 0);
1290
1291         mvm->hw->extra_beacon_tailroom = 0;
1292         mvm->beacon_inject_active = false;
1293         return ret ?: count;
1294 }
1295
1296 static ssize_t iwl_dbgfs_fw_dbg_conf_read(struct file *file,
1297                                           char __user *user_buf,
1298                                           size_t count, loff_t *ppos)
1299 {
1300         struct iwl_mvm *mvm = file->private_data;
1301         int conf;
1302         char buf[8];
1303         const size_t bufsz = sizeof(buf);
1304         int pos = 0;
1305
1306         mutex_lock(&mvm->mutex);
1307         conf = mvm->fwrt.dump.conf;
1308         mutex_unlock(&mvm->mutex);
1309
1310         pos += scnprintf(buf + pos, bufsz - pos, "%d\n", conf);
1311
1312         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
1313 }
1314
1315 static ssize_t iwl_dbgfs_fw_dbg_conf_write(struct iwl_mvm *mvm,
1316                                            char *buf, size_t count,
1317                                            loff_t *ppos)
1318 {
1319         unsigned int conf_id;
1320         int ret;
1321
1322         if (!iwl_mvm_firmware_running(mvm))
1323                 return -EIO;
1324
1325         ret = kstrtouint(buf, 0, &conf_id);
1326         if (ret)
1327                 return ret;
1328
1329         if (WARN_ON(conf_id >= FW_DBG_CONF_MAX))
1330                 return -EINVAL;
1331
1332         mutex_lock(&mvm->mutex);
1333         ret = iwl_fw_start_dbg_conf(&mvm->fwrt, conf_id);
1334         mutex_unlock(&mvm->mutex);
1335
1336         return ret ?: count;
1337 }
1338
1339 static ssize_t iwl_dbgfs_fw_dbg_collect_write(struct iwl_mvm *mvm,
1340                                               char *buf, size_t count,
1341                                               loff_t *ppos)
1342 {
1343         int ret;
1344
1345         ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PRPH_WRITE);
1346         if (ret)
1347                 return ret;
1348         if (count == 0)
1349                 return 0;
1350
1351         iwl_fw_dbg_collect(&mvm->fwrt, FW_DBG_TRIGGER_USER, buf,
1352                            (count - 1), NULL);
1353
1354         iwl_mvm_unref(mvm, IWL_MVM_REF_PRPH_WRITE);
1355
1356         return count;
1357 }
1358
1359 static ssize_t iwl_dbgfs_max_amsdu_len_write(struct iwl_mvm *mvm,
1360                                              char *buf, size_t count,
1361                                              loff_t *ppos)
1362 {
1363         unsigned int max_amsdu_len;
1364         int ret;
1365
1366         ret = kstrtouint(buf, 0, &max_amsdu_len);
1367         if (ret)
1368                 return ret;
1369
1370         if (max_amsdu_len > IEEE80211_MAX_MPDU_LEN_VHT_11454)
1371                 return -EINVAL;
1372         mvm->max_amsdu_len = max_amsdu_len;
1373
1374         return count;
1375 }
1376
1377 #define ADD_TEXT(...) pos += scnprintf(buf + pos, bufsz - pos, __VA_ARGS__)
1378 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
1379 static ssize_t iwl_dbgfs_bcast_filters_read(struct file *file,
1380                                             char __user *user_buf,
1381                                             size_t count, loff_t *ppos)
1382 {
1383         struct iwl_mvm *mvm = file->private_data;
1384         struct iwl_bcast_filter_cmd cmd;
1385         const struct iwl_fw_bcast_filter *filter;
1386         char *buf;
1387         int bufsz = 1024;
1388         int i, j, pos = 0;
1389         ssize_t ret;
1390
1391         buf = kzalloc(bufsz, GFP_KERNEL);
1392         if (!buf)
1393                 return -ENOMEM;
1394
1395         mutex_lock(&mvm->mutex);
1396         if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd)) {
1397                 ADD_TEXT("None\n");
1398                 mutex_unlock(&mvm->mutex);
1399                 goto out;
1400         }
1401         mutex_unlock(&mvm->mutex);
1402
1403         for (i = 0; cmd.filters[i].attrs[0].mask; i++) {
1404                 filter = &cmd.filters[i];
1405
1406                 ADD_TEXT("Filter [%d]:\n", i);
1407                 ADD_TEXT("\tDiscard=%d\n", filter->discard);
1408                 ADD_TEXT("\tFrame Type: %s\n",
1409                          filter->frame_type ? "IPv4" : "Generic");
1410
1411                 for (j = 0; j < ARRAY_SIZE(filter->attrs); j++) {
1412                         const struct iwl_fw_bcast_filter_attr *attr;
1413
1414                         attr = &filter->attrs[j];
1415                         if (!attr->mask)
1416                                 break;
1417
1418                         ADD_TEXT("\tAttr [%d]: offset=%d (from %s), mask=0x%x, value=0x%x reserved=0x%x\n",
1419                                  j, attr->offset,
1420                                  attr->offset_type ? "IP End" :
1421                                                      "Payload Start",
1422                                  be32_to_cpu(attr->mask),
1423                                  be32_to_cpu(attr->val),
1424                                  le16_to_cpu(attr->reserved1));
1425                 }
1426         }
1427 out:
1428         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
1429         kfree(buf);
1430         return ret;
1431 }
1432
1433 static ssize_t iwl_dbgfs_bcast_filters_write(struct iwl_mvm *mvm, char *buf,
1434                                              size_t count, loff_t *ppos)
1435 {
1436         int pos, next_pos;
1437         struct iwl_fw_bcast_filter filter = {};
1438         struct iwl_bcast_filter_cmd cmd;
1439         u32 filter_id, attr_id, mask, value;
1440         int err = 0;
1441
1442         if (sscanf(buf, "%d %hhi %hhi %n", &filter_id, &filter.discard,
1443                    &filter.frame_type, &pos) != 3)
1444                 return -EINVAL;
1445
1446         if (filter_id >= ARRAY_SIZE(mvm->dbgfs_bcast_filtering.cmd.filters) ||
1447             filter.frame_type > BCAST_FILTER_FRAME_TYPE_IPV4)
1448                 return -EINVAL;
1449
1450         for (attr_id = 0; attr_id < ARRAY_SIZE(filter.attrs);
1451              attr_id++) {
1452                 struct iwl_fw_bcast_filter_attr *attr =
1453                                 &filter.attrs[attr_id];
1454
1455                 if (pos >= count)
1456                         break;
1457
1458                 if (sscanf(&buf[pos], "%hhi %hhi %i %i %n",
1459                            &attr->offset, &attr->offset_type,
1460                            &mask, &value, &next_pos) != 4)
1461                         return -EINVAL;
1462
1463                 attr->mask = cpu_to_be32(mask);
1464                 attr->val = cpu_to_be32(value);
1465                 if (mask)
1466                         filter.num_attrs++;
1467
1468                 pos += next_pos;
1469         }
1470
1471         mutex_lock(&mvm->mutex);
1472         memcpy(&mvm->dbgfs_bcast_filtering.cmd.filters[filter_id],
1473                &filter, sizeof(filter));
1474
1475         /* send updated bcast filtering configuration */
1476         if (iwl_mvm_firmware_running(mvm) &&
1477             mvm->dbgfs_bcast_filtering.override &&
1478             iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
1479                 err = iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0,
1480                                            sizeof(cmd), &cmd);
1481         mutex_unlock(&mvm->mutex);
1482
1483         return err ?: count;
1484 }
1485
1486 static ssize_t iwl_dbgfs_bcast_filters_macs_read(struct file *file,
1487                                                  char __user *user_buf,
1488                                                  size_t count, loff_t *ppos)
1489 {
1490         struct iwl_mvm *mvm = file->private_data;
1491         struct iwl_bcast_filter_cmd cmd;
1492         char *buf;
1493         int bufsz = 1024;
1494         int i, pos = 0;
1495         ssize_t ret;
1496
1497         buf = kzalloc(bufsz, GFP_KERNEL);
1498         if (!buf)
1499                 return -ENOMEM;
1500
1501         mutex_lock(&mvm->mutex);
1502         if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd)) {
1503                 ADD_TEXT("None\n");
1504                 mutex_unlock(&mvm->mutex);
1505                 goto out;
1506         }
1507         mutex_unlock(&mvm->mutex);
1508
1509         for (i = 0; i < ARRAY_SIZE(cmd.macs); i++) {
1510                 const struct iwl_fw_bcast_mac *mac = &cmd.macs[i];
1511
1512                 ADD_TEXT("Mac [%d]: discard=%d attached_filters=0x%x\n",
1513                          i, mac->default_discard, mac->attached_filters);
1514         }
1515 out:
1516         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
1517         kfree(buf);
1518         return ret;
1519 }
1520
1521 static ssize_t iwl_dbgfs_bcast_filters_macs_write(struct iwl_mvm *mvm,
1522                                                   char *buf, size_t count,
1523                                                   loff_t *ppos)
1524 {
1525         struct iwl_bcast_filter_cmd cmd;
1526         struct iwl_fw_bcast_mac mac = {};
1527         u32 mac_id, attached_filters;
1528         int err = 0;
1529
1530         if (!mvm->bcast_filters)
1531                 return -ENOENT;
1532
1533         if (sscanf(buf, "%d %hhi %i", &mac_id, &mac.default_discard,
1534                    &attached_filters) != 3)
1535                 return -EINVAL;
1536
1537         if (mac_id >= ARRAY_SIZE(cmd.macs) ||
1538             mac.default_discard > 1 ||
1539             attached_filters >= BIT(ARRAY_SIZE(cmd.filters)))
1540                 return -EINVAL;
1541
1542         mac.attached_filters = cpu_to_le16(attached_filters);
1543
1544         mutex_lock(&mvm->mutex);
1545         memcpy(&mvm->dbgfs_bcast_filtering.cmd.macs[mac_id],
1546                &mac, sizeof(mac));
1547
1548         /* send updated bcast filtering configuration */
1549         if (iwl_mvm_firmware_running(mvm) &&
1550             mvm->dbgfs_bcast_filtering.override &&
1551             iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
1552                 err = iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0,
1553                                            sizeof(cmd), &cmd);
1554         mutex_unlock(&mvm->mutex);
1555
1556         return err ?: count;
1557 }
1558 #endif
1559
1560 #ifdef CONFIG_PM_SLEEP
1561 static ssize_t iwl_dbgfs_d3_sram_write(struct iwl_mvm *mvm, char *buf,
1562                                        size_t count, loff_t *ppos)
1563 {
1564         int store;
1565
1566         if (sscanf(buf, "%d", &store) != 1)
1567                 return -EINVAL;
1568
1569         mvm->store_d3_resume_sram = store;
1570
1571         return count;
1572 }
1573
1574 static ssize_t iwl_dbgfs_d3_sram_read(struct file *file, char __user *user_buf,
1575                                       size_t count, loff_t *ppos)
1576 {
1577         struct iwl_mvm *mvm = file->private_data;
1578         const struct fw_img *img;
1579         int ofs, len, pos = 0;
1580         size_t bufsz, ret;
1581         char *buf;
1582         u8 *ptr = mvm->d3_resume_sram;
1583
1584         img = &mvm->fw->img[IWL_UCODE_WOWLAN];
1585         len = img->sec[IWL_UCODE_SECTION_DATA].len;
1586
1587         bufsz = len * 4 + 256;
1588         buf = kzalloc(bufsz, GFP_KERNEL);
1589         if (!buf)
1590                 return -ENOMEM;
1591
1592         pos += scnprintf(buf, bufsz, "D3 SRAM capture: %sabled\n",
1593                          mvm->store_d3_resume_sram ? "en" : "dis");
1594
1595         if (ptr) {
1596                 for (ofs = 0; ofs < len; ofs += 16) {
1597                         pos += scnprintf(buf + pos, bufsz - pos,
1598                                          "0x%.4x %16ph\n", ofs, ptr + ofs);
1599                 }
1600         } else {
1601                 pos += scnprintf(buf + pos, bufsz - pos,
1602                                  "(no data captured)\n");
1603         }
1604
1605         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
1606
1607         kfree(buf);
1608
1609         return ret;
1610 }
1611 #endif
1612
1613 #define PRINT_MVM_REF(ref) do {                                         \
1614         if (mvm->refs[ref])                                             \
1615                 pos += scnprintf(buf + pos, bufsz - pos,                \
1616                                  "\t(0x%lx): %d %s\n",                  \
1617                                  BIT(ref), mvm->refs[ref], #ref);       \
1618 } while (0)
1619
1620 static ssize_t iwl_dbgfs_d0i3_refs_read(struct file *file,
1621                                         char __user *user_buf,
1622                                         size_t count, loff_t *ppos)
1623 {
1624         struct iwl_mvm *mvm = file->private_data;
1625         int i, pos = 0;
1626         char buf[256];
1627         const size_t bufsz = sizeof(buf);
1628         u32 refs = 0;
1629
1630         for (i = 0; i < IWL_MVM_REF_COUNT; i++)
1631                 if (mvm->refs[i])
1632                         refs |= BIT(i);
1633
1634         pos += scnprintf(buf + pos, bufsz - pos, "taken mvm refs: 0x%x\n",
1635                          refs);
1636
1637         PRINT_MVM_REF(IWL_MVM_REF_UCODE_DOWN);
1638         PRINT_MVM_REF(IWL_MVM_REF_SCAN);
1639         PRINT_MVM_REF(IWL_MVM_REF_ROC);
1640         PRINT_MVM_REF(IWL_MVM_REF_ROC_AUX);
1641         PRINT_MVM_REF(IWL_MVM_REF_P2P_CLIENT);
1642         PRINT_MVM_REF(IWL_MVM_REF_AP_IBSS);
1643         PRINT_MVM_REF(IWL_MVM_REF_USER);
1644         PRINT_MVM_REF(IWL_MVM_REF_TX);
1645         PRINT_MVM_REF(IWL_MVM_REF_TX_AGG);
1646         PRINT_MVM_REF(IWL_MVM_REF_ADD_IF);
1647         PRINT_MVM_REF(IWL_MVM_REF_START_AP);
1648         PRINT_MVM_REF(IWL_MVM_REF_BSS_CHANGED);
1649         PRINT_MVM_REF(IWL_MVM_REF_PREPARE_TX);
1650         PRINT_MVM_REF(IWL_MVM_REF_PROTECT_TDLS);
1651         PRINT_MVM_REF(IWL_MVM_REF_CHECK_CTKILL);
1652         PRINT_MVM_REF(IWL_MVM_REF_PRPH_READ);
1653         PRINT_MVM_REF(IWL_MVM_REF_PRPH_WRITE);
1654         PRINT_MVM_REF(IWL_MVM_REF_NMI);
1655         PRINT_MVM_REF(IWL_MVM_REF_TM_CMD);
1656         PRINT_MVM_REF(IWL_MVM_REF_EXIT_WORK);
1657         PRINT_MVM_REF(IWL_MVM_REF_PROTECT_CSA);
1658         PRINT_MVM_REF(IWL_MVM_REF_FW_DBG_COLLECT);
1659         PRINT_MVM_REF(IWL_MVM_REF_INIT_UCODE);
1660         PRINT_MVM_REF(IWL_MVM_REF_SENDING_CMD);
1661         PRINT_MVM_REF(IWL_MVM_REF_RX);
1662
1663         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
1664 }
1665
1666 static ssize_t iwl_dbgfs_d0i3_refs_write(struct iwl_mvm *mvm, char *buf,
1667                                          size_t count, loff_t *ppos)
1668 {
1669         unsigned long value;
1670         int ret;
1671         bool taken;
1672
1673         ret = kstrtoul(buf, 10, &value);
1674         if (ret < 0)
1675                 return ret;
1676
1677         mutex_lock(&mvm->mutex);
1678
1679         taken = mvm->refs[IWL_MVM_REF_USER];
1680         if (value == 1 && !taken)
1681                 iwl_mvm_ref(mvm, IWL_MVM_REF_USER);
1682         else if (value == 0 && taken)
1683                 iwl_mvm_unref(mvm, IWL_MVM_REF_USER);
1684         else
1685                 ret = -EINVAL;
1686
1687         mutex_unlock(&mvm->mutex);
1688
1689         if (ret < 0)
1690                 return ret;
1691         return count;
1692 }
1693
1694 #define MVM_DEBUGFS_WRITE_FILE_OPS(name, bufsz) \
1695         _MVM_DEBUGFS_WRITE_FILE_OPS(name, bufsz, struct iwl_mvm)
1696 #define MVM_DEBUGFS_READ_WRITE_FILE_OPS(name, bufsz) \
1697         _MVM_DEBUGFS_READ_WRITE_FILE_OPS(name, bufsz, struct iwl_mvm)
1698 #define MVM_DEBUGFS_ADD_FILE_ALIAS(alias, name, parent, mode) do {      \
1699                 debugfs_create_file(alias, mode, parent, mvm,           \
1700                                     &iwl_dbgfs_##name##_ops);           \
1701         } while (0)
1702 #define MVM_DEBUGFS_ADD_FILE(name, parent, mode) \
1703         MVM_DEBUGFS_ADD_FILE_ALIAS(#name, name, parent, mode)
1704
1705 #define MVM_DEBUGFS_WRITE_STA_FILE_OPS(name, bufsz) \
1706         _MVM_DEBUGFS_WRITE_FILE_OPS(name, bufsz, struct ieee80211_sta)
1707 #define MVM_DEBUGFS_READ_WRITE_STA_FILE_OPS(name, bufsz) \
1708         _MVM_DEBUGFS_READ_WRITE_FILE_OPS(name, bufsz, struct ieee80211_sta)
1709
1710 #define MVM_DEBUGFS_ADD_STA_FILE_ALIAS(alias, name, parent, mode) do {  \
1711                 debugfs_create_file(alias, mode, parent, sta,           \
1712                                     &iwl_dbgfs_##name##_ops);           \
1713         } while (0)
1714 #define MVM_DEBUGFS_ADD_STA_FILE(name, parent, mode) \
1715         MVM_DEBUGFS_ADD_STA_FILE_ALIAS(#name, name, parent, mode)
1716
1717 static ssize_t
1718 iwl_dbgfs_prph_reg_read(struct file *file,
1719                         char __user *user_buf,
1720                         size_t count, loff_t *ppos)
1721 {
1722         struct iwl_mvm *mvm = file->private_data;
1723         int pos = 0;
1724         char buf[32];
1725         const size_t bufsz = sizeof(buf);
1726         int ret;
1727
1728         if (!mvm->dbgfs_prph_reg_addr)
1729                 return -EINVAL;
1730
1731         ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PRPH_READ);
1732         if (ret)
1733                 return ret;
1734
1735         pos += scnprintf(buf + pos, bufsz - pos, "Reg 0x%x: (0x%x)\n",
1736                 mvm->dbgfs_prph_reg_addr,
1737                 iwl_read_prph(mvm->trans, mvm->dbgfs_prph_reg_addr));
1738
1739         iwl_mvm_unref(mvm, IWL_MVM_REF_PRPH_READ);
1740
1741         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
1742 }
1743
1744 static ssize_t
1745 iwl_dbgfs_prph_reg_write(struct iwl_mvm *mvm, char *buf,
1746                          size_t count, loff_t *ppos)
1747 {
1748         u8 args;
1749         u32 value;
1750         int ret;
1751
1752         args = sscanf(buf, "%i %i", &mvm->dbgfs_prph_reg_addr, &value);
1753         /* if we only want to set the reg address - nothing more to do */
1754         if (args == 1)
1755                 goto out;
1756
1757         /* otherwise, make sure we have both address and value */
1758         if (args != 2)
1759                 return -EINVAL;
1760
1761         ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PRPH_WRITE);
1762         if (ret)
1763                 return ret;
1764
1765         iwl_write_prph(mvm->trans, mvm->dbgfs_prph_reg_addr, value);
1766
1767         iwl_mvm_unref(mvm, IWL_MVM_REF_PRPH_WRITE);
1768 out:
1769         return count;
1770 }
1771
1772 static ssize_t
1773 iwl_dbgfs_send_echo_cmd_write(struct iwl_mvm *mvm, char *buf,
1774                               size_t count, loff_t *ppos)
1775 {
1776         int ret;
1777
1778         if (!iwl_mvm_firmware_running(mvm))
1779                 return -EIO;
1780
1781         mutex_lock(&mvm->mutex);
1782         ret = iwl_mvm_send_cmd_pdu(mvm, ECHO_CMD, 0, 0, NULL);
1783         mutex_unlock(&mvm->mutex);
1784
1785         return ret ?: count;
1786 }
1787
1788 struct iwl_mvm_sniffer_apply {
1789         struct iwl_mvm *mvm;
1790         u8 *bssid;
1791         u16 aid;
1792 };
1793
1794 static bool iwl_mvm_sniffer_apply(struct iwl_notif_wait_data *notif_data,
1795                                   struct iwl_rx_packet *pkt, void *data)
1796 {
1797         struct iwl_mvm_sniffer_apply *apply = data;
1798
1799         apply->mvm->cur_aid = cpu_to_le16(apply->aid);
1800         memcpy(apply->mvm->cur_bssid, apply->bssid,
1801                sizeof(apply->mvm->cur_bssid));
1802
1803         return true;
1804 }
1805
1806 static ssize_t
1807 iwl_dbgfs_he_sniffer_params_write(struct iwl_mvm *mvm, char *buf,
1808                                   size_t count, loff_t *ppos)
1809 {
1810         struct iwl_notification_wait wait;
1811         struct iwl_he_monitor_cmd he_mon_cmd = {};
1812         struct iwl_mvm_sniffer_apply apply = {
1813                 .mvm = mvm,
1814         };
1815         u16 wait_cmds[] = {
1816                 iwl_cmd_id(HE_AIR_SNIFFER_CONFIG_CMD, DATA_PATH_GROUP, 0),
1817         };
1818         u32 aid;
1819         int ret;
1820
1821         if (!iwl_mvm_firmware_running(mvm))
1822                 return -EIO;
1823
1824         ret = sscanf(buf, "%x %2hhx:%2hhx:%2hhx:%2hhx:%2hhx:%2hhx", &aid,
1825                      &he_mon_cmd.bssid[0], &he_mon_cmd.bssid[1],
1826                      &he_mon_cmd.bssid[2], &he_mon_cmd.bssid[3],
1827                      &he_mon_cmd.bssid[4], &he_mon_cmd.bssid[5]);
1828         if (ret != 7)
1829                 return -EINVAL;
1830
1831         he_mon_cmd.aid = cpu_to_le16(aid);
1832
1833         apply.aid = aid;
1834         apply.bssid = (void *)he_mon_cmd.bssid;
1835
1836         mutex_lock(&mvm->mutex);
1837
1838         /*
1839          * Use the notification waiter to get our function triggered
1840          * in sequence with other RX. This ensures that frames we get
1841          * on the RX queue _before_ the new configuration is applied
1842          * still have mvm->cur_aid pointing to the old AID, and that
1843          * frames on the RX queue _after_ the firmware processed the
1844          * new configuration (and sent the response, synchronously)
1845          * get mvm->cur_aid correctly set to the new AID.
1846          */
1847         iwl_init_notification_wait(&mvm->notif_wait, &wait,
1848                                    wait_cmds, ARRAY_SIZE(wait_cmds),
1849                                    iwl_mvm_sniffer_apply, &apply);
1850
1851         ret = iwl_mvm_send_cmd_pdu(mvm, iwl_cmd_id(HE_AIR_SNIFFER_CONFIG_CMD,
1852                                                    DATA_PATH_GROUP, 0), 0,
1853                                    sizeof(he_mon_cmd), &he_mon_cmd);
1854
1855         /* no need to really wait, we already did anyway */
1856         iwl_remove_notification(&mvm->notif_wait, &wait);
1857
1858         mutex_unlock(&mvm->mutex);
1859
1860         return ret ?: count;
1861 }
1862
1863 static ssize_t
1864 iwl_dbgfs_he_sniffer_params_read(struct file *file, char __user *user_buf,
1865                                  size_t count, loff_t *ppos)
1866 {
1867         struct iwl_mvm *mvm = file->private_data;
1868         u8 buf[32];
1869         int len;
1870
1871         len = scnprintf(buf, sizeof(buf),
1872                         "%d %02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx\n",
1873                         le16_to_cpu(mvm->cur_aid), mvm->cur_bssid[0],
1874                         mvm->cur_bssid[1], mvm->cur_bssid[2], mvm->cur_bssid[3],
1875                         mvm->cur_bssid[4], mvm->cur_bssid[5]);
1876
1877         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
1878 }
1879
1880 static ssize_t
1881 iwl_dbgfs_uapsd_noagg_bssids_read(struct file *file, char __user *user_buf,
1882                                   size_t count, loff_t *ppos)
1883 {
1884         struct iwl_mvm *mvm = file->private_data;
1885         u8 buf[IWL_MVM_UAPSD_NOAGG_BSSIDS_NUM * ETH_ALEN * 3 + 1];
1886         unsigned int pos = 0;
1887         size_t bufsz = sizeof(buf);
1888         int i;
1889
1890         mutex_lock(&mvm->mutex);
1891
1892         for (i = 0; i < IWL_MVM_UAPSD_NOAGG_LIST_LEN; i++)
1893                 pos += scnprintf(buf + pos, bufsz - pos, "%pM\n",
1894                                  mvm->uapsd_noagg_bssids[i].addr);
1895
1896         mutex_unlock(&mvm->mutex);
1897
1898         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
1899 }
1900
1901 MVM_DEBUGFS_READ_WRITE_FILE_OPS(prph_reg, 64);
1902
1903 /* Device wide debugfs entries */
1904 MVM_DEBUGFS_READ_FILE_OPS(ctdp_budget);
1905 MVM_DEBUGFS_WRITE_FILE_OPS(stop_ctdp, 8);
1906 MVM_DEBUGFS_WRITE_FILE_OPS(force_ctkill, 8);
1907 MVM_DEBUGFS_WRITE_FILE_OPS(tx_flush, 16);
1908 MVM_DEBUGFS_WRITE_FILE_OPS(sta_drain, 8);
1909 MVM_DEBUGFS_WRITE_FILE_OPS(send_echo_cmd, 8);
1910 MVM_DEBUGFS_READ_WRITE_FILE_OPS(sram, 64);
1911 MVM_DEBUGFS_READ_WRITE_FILE_OPS(set_nic_temperature, 64);
1912 MVM_DEBUGFS_READ_FILE_OPS(nic_temp);
1913 MVM_DEBUGFS_READ_FILE_OPS(stations);
1914 MVM_DEBUGFS_READ_FILE_OPS(rs_data);
1915 MVM_DEBUGFS_READ_FILE_OPS(bt_notif);
1916 MVM_DEBUGFS_READ_FILE_OPS(bt_cmd);
1917 MVM_DEBUGFS_READ_WRITE_FILE_OPS(disable_power_off, 64);
1918 MVM_DEBUGFS_READ_FILE_OPS(fw_rx_stats);
1919 MVM_DEBUGFS_READ_FILE_OPS(drv_rx_stats);
1920 MVM_DEBUGFS_READ_FILE_OPS(fw_ver);
1921 MVM_DEBUGFS_WRITE_FILE_OPS(fw_restart, 10);
1922 MVM_DEBUGFS_WRITE_FILE_OPS(fw_nmi, 10);
1923 MVM_DEBUGFS_WRITE_FILE_OPS(bt_tx_prio, 10);
1924 MVM_DEBUGFS_WRITE_FILE_OPS(bt_force_ant, 10);
1925 MVM_DEBUGFS_READ_WRITE_FILE_OPS(scan_ant_rxchain, 8);
1926 MVM_DEBUGFS_READ_WRITE_FILE_OPS(d0i3_refs, 8);
1927 MVM_DEBUGFS_READ_WRITE_FILE_OPS(fw_dbg_conf, 8);
1928 MVM_DEBUGFS_WRITE_FILE_OPS(fw_dbg_collect, 64);
1929 MVM_DEBUGFS_WRITE_FILE_OPS(max_amsdu_len, 8);
1930 MVM_DEBUGFS_WRITE_FILE_OPS(indirection_tbl,
1931                            (IWL_RSS_INDIRECTION_TABLE_SIZE * 2));
1932 MVM_DEBUGFS_WRITE_FILE_OPS(inject_packet, 512);
1933 MVM_DEBUGFS_WRITE_FILE_OPS(inject_beacon_ie, 512);
1934 MVM_DEBUGFS_WRITE_FILE_OPS(inject_beacon_ie_restore, 512);
1935
1936 MVM_DEBUGFS_READ_FILE_OPS(uapsd_noagg_bssids);
1937
1938 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
1939 MVM_DEBUGFS_READ_WRITE_FILE_OPS(bcast_filters, 256);
1940 MVM_DEBUGFS_READ_WRITE_FILE_OPS(bcast_filters_macs, 256);
1941 #endif
1942
1943 #ifdef CONFIG_PM_SLEEP
1944 MVM_DEBUGFS_READ_WRITE_FILE_OPS(d3_sram, 8);
1945 #endif
1946 #ifdef CONFIG_ACPI
1947 MVM_DEBUGFS_READ_FILE_OPS(sar_geo_profile);
1948 #endif
1949
1950 MVM_DEBUGFS_READ_WRITE_FILE_OPS(he_sniffer_params, 32);
1951
1952 static ssize_t iwl_dbgfs_mem_read(struct file *file, char __user *user_buf,
1953                                   size_t count, loff_t *ppos)
1954 {
1955         struct iwl_mvm *mvm = file->private_data;
1956         struct iwl_dbg_mem_access_cmd cmd = {};
1957         struct iwl_dbg_mem_access_rsp *rsp;
1958         struct iwl_host_cmd hcmd = {
1959                 .flags = CMD_WANT_SKB | CMD_SEND_IN_RFKILL,
1960                 .data = { &cmd, },
1961                 .len = { sizeof(cmd) },
1962         };
1963         size_t delta;
1964         ssize_t ret, len;
1965
1966         if (!iwl_mvm_firmware_running(mvm))
1967                 return -EIO;
1968
1969         hcmd.id = iwl_cmd_id(*ppos >> 24 ? UMAC_RD_WR : LMAC_RD_WR,
1970                              DEBUG_GROUP, 0);
1971         cmd.op = cpu_to_le32(DEBUG_MEM_OP_READ);
1972
1973         /* Take care of alignment of both the position and the length */
1974         delta = *ppos & 0x3;
1975         cmd.addr = cpu_to_le32(*ppos - delta);
1976         cmd.len = cpu_to_le32(min(ALIGN(count + delta, 4) / 4,
1977                                   (size_t)DEBUG_MEM_MAX_SIZE_DWORDS));
1978
1979         mutex_lock(&mvm->mutex);
1980         ret = iwl_mvm_send_cmd(mvm, &hcmd);
1981         mutex_unlock(&mvm->mutex);
1982
1983         if (ret < 0)
1984                 return ret;
1985
1986         rsp = (void *)hcmd.resp_pkt->data;
1987         if (le32_to_cpu(rsp->status) != DEBUG_MEM_STATUS_SUCCESS) {
1988                 ret = -ENXIO;
1989                 goto out;
1990         }
1991
1992         len = min((size_t)le32_to_cpu(rsp->len) << 2,
1993                   iwl_rx_packet_payload_len(hcmd.resp_pkt) - sizeof(*rsp));
1994         len = min(len - delta, count);
1995         if (len < 0) {
1996                 ret = -EFAULT;
1997                 goto out;
1998         }
1999
2000         ret = len - copy_to_user(user_buf, (void *)rsp->data + delta, len);
2001         *ppos += ret;
2002
2003 out:
2004         iwl_free_resp(&hcmd);
2005         return ret;
2006 }
2007
2008 static ssize_t iwl_dbgfs_mem_write(struct file *file,
2009                                    const char __user *user_buf, size_t count,
2010                                    loff_t *ppos)
2011 {
2012         struct iwl_mvm *mvm = file->private_data;
2013         struct iwl_dbg_mem_access_cmd *cmd;
2014         struct iwl_dbg_mem_access_rsp *rsp;
2015         struct iwl_host_cmd hcmd = {};
2016         size_t cmd_size;
2017         size_t data_size;
2018         u32 op, len;
2019         ssize_t ret;
2020
2021         if (!iwl_mvm_firmware_running(mvm))
2022                 return -EIO;
2023
2024         hcmd.id = iwl_cmd_id(*ppos >> 24 ? UMAC_RD_WR : LMAC_RD_WR,
2025                              DEBUG_GROUP, 0);
2026
2027         if (*ppos & 0x3 || count < 4) {
2028                 op = DEBUG_MEM_OP_WRITE_BYTES;
2029                 len = min(count, (size_t)(4 - (*ppos & 0x3)));
2030                 data_size = len;
2031         } else {
2032                 op = DEBUG_MEM_OP_WRITE;
2033                 len = min(count >> 2, (size_t)DEBUG_MEM_MAX_SIZE_DWORDS);
2034                 data_size = len << 2;
2035         }
2036
2037         cmd_size = sizeof(*cmd) + ALIGN(data_size, 4);
2038         cmd = kzalloc(cmd_size, GFP_KERNEL);
2039         if (!cmd)
2040                 return -ENOMEM;
2041
2042         cmd->op = cpu_to_le32(op);
2043         cmd->len = cpu_to_le32(len);
2044         cmd->addr = cpu_to_le32(*ppos);
2045         if (copy_from_user((void *)cmd->data, user_buf, data_size)) {
2046                 kfree(cmd);
2047                 return -EFAULT;
2048         }
2049
2050         hcmd.flags = CMD_WANT_SKB | CMD_SEND_IN_RFKILL,
2051         hcmd.data[0] = (void *)cmd;
2052         hcmd.len[0] = cmd_size;
2053
2054         mutex_lock(&mvm->mutex);
2055         ret = iwl_mvm_send_cmd(mvm, &hcmd);
2056         mutex_unlock(&mvm->mutex);
2057
2058         kfree(cmd);
2059
2060         if (ret < 0)
2061                 return ret;
2062
2063         rsp = (void *)hcmd.resp_pkt->data;
2064         if (rsp->status != DEBUG_MEM_STATUS_SUCCESS) {
2065                 ret = -ENXIO;
2066                 goto out;
2067         }
2068
2069         ret = data_size;
2070         *ppos += ret;
2071
2072 out:
2073         iwl_free_resp(&hcmd);
2074         return ret;
2075 }
2076
2077 static const struct file_operations iwl_dbgfs_mem_ops = {
2078         .read = iwl_dbgfs_mem_read,
2079         .write = iwl_dbgfs_mem_write,
2080         .open = simple_open,
2081         .llseek = default_llseek,
2082 };
2083
2084 void iwl_mvm_sta_add_debugfs(struct ieee80211_hw *hw,
2085                              struct ieee80211_vif *vif,
2086                              struct ieee80211_sta *sta,
2087                              struct dentry *dir)
2088 {
2089         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2090
2091         if (iwl_mvm_has_tlc_offload(mvm))
2092                 MVM_DEBUGFS_ADD_STA_FILE(rs_data, dir, 0400);
2093 }
2094
2095 void iwl_mvm_dbgfs_register(struct iwl_mvm *mvm, struct dentry *dbgfs_dir)
2096 {
2097         struct dentry *bcast_dir __maybe_unused;
2098         char buf[100];
2099
2100         spin_lock_init(&mvm->drv_stats_lock);
2101
2102         mvm->debugfs_dir = dbgfs_dir;
2103
2104         MVM_DEBUGFS_ADD_FILE(tx_flush, mvm->debugfs_dir, 0200);
2105         MVM_DEBUGFS_ADD_FILE(sta_drain, mvm->debugfs_dir, 0200);
2106         MVM_DEBUGFS_ADD_FILE(sram, mvm->debugfs_dir, 0600);
2107         MVM_DEBUGFS_ADD_FILE(set_nic_temperature, mvm->debugfs_dir, 0600);
2108         MVM_DEBUGFS_ADD_FILE(nic_temp, dbgfs_dir, 0400);
2109         MVM_DEBUGFS_ADD_FILE(ctdp_budget, dbgfs_dir, 0400);
2110         MVM_DEBUGFS_ADD_FILE(stop_ctdp, dbgfs_dir, 0200);
2111         MVM_DEBUGFS_ADD_FILE(force_ctkill, dbgfs_dir, 0200);
2112         MVM_DEBUGFS_ADD_FILE(stations, dbgfs_dir, 0400);
2113         MVM_DEBUGFS_ADD_FILE(bt_notif, dbgfs_dir, 0400);
2114         MVM_DEBUGFS_ADD_FILE(bt_cmd, dbgfs_dir, 0400);
2115         MVM_DEBUGFS_ADD_FILE(disable_power_off, mvm->debugfs_dir, 0600);
2116         MVM_DEBUGFS_ADD_FILE(fw_ver, mvm->debugfs_dir, 0400);
2117         MVM_DEBUGFS_ADD_FILE(fw_rx_stats, mvm->debugfs_dir, 0400);
2118         MVM_DEBUGFS_ADD_FILE(drv_rx_stats, mvm->debugfs_dir, 0400);
2119         MVM_DEBUGFS_ADD_FILE(fw_restart, mvm->debugfs_dir, 0200);
2120         MVM_DEBUGFS_ADD_FILE(fw_nmi, mvm->debugfs_dir, 0200);
2121         MVM_DEBUGFS_ADD_FILE(bt_tx_prio, mvm->debugfs_dir, 0200);
2122         MVM_DEBUGFS_ADD_FILE(bt_force_ant, mvm->debugfs_dir, 0200);
2123         MVM_DEBUGFS_ADD_FILE(scan_ant_rxchain, mvm->debugfs_dir, 0600);
2124         MVM_DEBUGFS_ADD_FILE(prph_reg, mvm->debugfs_dir, 0600);
2125         MVM_DEBUGFS_ADD_FILE(d0i3_refs, mvm->debugfs_dir, 0600);
2126         MVM_DEBUGFS_ADD_FILE(fw_dbg_conf, mvm->debugfs_dir, 0600);
2127         MVM_DEBUGFS_ADD_FILE(fw_dbg_collect, mvm->debugfs_dir, 0200);
2128         MVM_DEBUGFS_ADD_FILE(max_amsdu_len, mvm->debugfs_dir, 0200);
2129         MVM_DEBUGFS_ADD_FILE(send_echo_cmd, mvm->debugfs_dir, 0200);
2130         MVM_DEBUGFS_ADD_FILE(indirection_tbl, mvm->debugfs_dir, 0200);
2131         MVM_DEBUGFS_ADD_FILE(inject_packet, mvm->debugfs_dir, 0200);
2132         MVM_DEBUGFS_ADD_FILE(inject_beacon_ie, mvm->debugfs_dir, 0200);
2133         MVM_DEBUGFS_ADD_FILE(inject_beacon_ie_restore, mvm->debugfs_dir, 0200);
2134 #ifdef CONFIG_ACPI
2135         MVM_DEBUGFS_ADD_FILE(sar_geo_profile, dbgfs_dir, 0400);
2136 #endif
2137         MVM_DEBUGFS_ADD_FILE(he_sniffer_params, mvm->debugfs_dir, 0600);
2138
2139         debugfs_create_bool("enable_scan_iteration_notif", 0600,
2140                             mvm->debugfs_dir, &mvm->scan_iter_notif_enabled);
2141         debugfs_create_bool("drop_bcn_ap_mode", 0600, mvm->debugfs_dir,
2142                             &mvm->drop_bcn_ap_mode);
2143
2144         MVM_DEBUGFS_ADD_FILE(uapsd_noagg_bssids, mvm->debugfs_dir, S_IRUSR);
2145
2146 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
2147         if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING) {
2148                 bcast_dir = debugfs_create_dir("bcast_filtering",
2149                                                mvm->debugfs_dir);
2150
2151                 debugfs_create_bool("override", 0600, bcast_dir,
2152                                     &mvm->dbgfs_bcast_filtering.override);
2153
2154                 MVM_DEBUGFS_ADD_FILE_ALIAS("filters", bcast_filters,
2155                                            bcast_dir, 0600);
2156                 MVM_DEBUGFS_ADD_FILE_ALIAS("macs", bcast_filters_macs,
2157                                            bcast_dir, 0600);
2158         }
2159 #endif
2160
2161 #ifdef CONFIG_PM_SLEEP
2162         MVM_DEBUGFS_ADD_FILE(d3_sram, mvm->debugfs_dir, 0600);
2163         MVM_DEBUGFS_ADD_FILE(d3_test, mvm->debugfs_dir, 0400);
2164         debugfs_create_bool("d3_wake_sysassert", 0600, mvm->debugfs_dir,
2165                             &mvm->d3_wake_sysassert);
2166         debugfs_create_u32("last_netdetect_scans", 0400, mvm->debugfs_dir,
2167                            &mvm->last_netdetect_scans);
2168 #endif
2169
2170         debugfs_create_u8("ps_disabled", 0400, mvm->debugfs_dir,
2171                           &mvm->ps_disabled);
2172         debugfs_create_blob("nvm_hw", 0400, mvm->debugfs_dir,
2173                             &mvm->nvm_hw_blob);
2174         debugfs_create_blob("nvm_sw", 0400, mvm->debugfs_dir,
2175                             &mvm->nvm_sw_blob);
2176         debugfs_create_blob("nvm_calib", 0400, mvm->debugfs_dir,
2177                             &mvm->nvm_calib_blob);
2178         debugfs_create_blob("nvm_prod", 0400, mvm->debugfs_dir,
2179                             &mvm->nvm_prod_blob);
2180         debugfs_create_blob("nvm_phy_sku", 0400, mvm->debugfs_dir,
2181                             &mvm->nvm_phy_sku_blob);
2182         debugfs_create_blob("nvm_reg", S_IRUSR,
2183                             mvm->debugfs_dir, &mvm->nvm_reg_blob);
2184
2185         debugfs_create_file("mem", 0600, dbgfs_dir, mvm, &iwl_dbgfs_mem_ops);
2186
2187         /*
2188          * Create a symlink with mac80211. It will be removed when mac80211
2189          * exists (before the opmode exists which removes the target.)
2190          */
2191         snprintf(buf, 100, "../../%pd2", dbgfs_dir->d_parent);
2192         debugfs_create_symlink("iwlwifi", mvm->hw->wiphy->debugfsdir, buf);
2193 }