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iwlwifi: mvm: optionally store D3 SRAM after resume
[linux-2.6/btrfs-unstable.git] / drivers / net / wireless / iwlwifi / mvm / debugfs.c
blob0765827d87a6538a5b549bc8584004a3826e8138
1 /******************************************************************************
2 *
3 * This file is provided under a dual BSD/GPLv2 license. When using or
4 * redistributing this file, you may do so under either license.
5 *
6 * GPL LICENSE SUMMARY
7 *
8 * Copyright(c) 2012 - 2013 Intel Corporation. All rights reserved.
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of version 2 of the GNU General Public License as
12 * published by the Free Software Foundation.
13 *
14 * This program is distributed in the hope that it will be useful, but
15 * WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
22 * USA
23 *
24 * The full GNU General Public License is included in this distribution
25 * in the file called COPYING.
26 *
27 * Contact Information:
28 * Intel Linux Wireless <ilw@linux.intel.com>
29 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
30 *
31 * BSD LICENSE
32 *
33 * Copyright(c) 2012 - 2013 Intel Corporation. All rights reserved.
34 * All rights reserved.
35 *
36 * Redistribution and use in source and binary forms, with or without
37 * modification, are permitted provided that the following conditions
38 * are met:
39 *
40 * * Redistributions of source code must retain the above copyright
41 * notice, this list of conditions and the following disclaimer.
42 * * Redistributions in binary form must reproduce the above copyright
43 * notice, this list of conditions and the following disclaimer in
44 * the documentation and/or other materials provided with the
45 * distribution.
46 * * Neither the name Intel Corporation nor the names of its
47 * contributors may be used to endorse or promote products derived
48 * from this software without specific prior written permission.
49 *
50 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
51 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
52 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
53 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
54 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
55 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
56 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
57 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
58 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
59 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
60 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
61 *
62 *****************************************************************************/
63 #include "mvm.h"
64 #include "sta.h"
65 #include "iwl-io.h"
66
67 struct iwl_dbgfs_mvm_ctx {
68 struct iwl_mvm *mvm;
69 struct ieee80211_vif *vif;
70 };
71
72 static 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
102 static 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
138 static 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 /* default is to dump the entire data segment */
149 if (!mvm->dbgfs_sram_offset && !mvm->dbgfs_sram_len) {
150 if (!mvm->ucode_loaded)
151 return -EINVAL;
152 img = &mvm->fw->img[mvm->cur_ucode];
153 mvm->dbgfs_sram_offset =
154 img->sec[IWL_UCODE_SECTION_DATA].offset;
155 mvm->dbgfs_sram_len = img->sec[IWL_UCODE_SECTION_DATA].len;
156 }
157 len = mvm->dbgfs_sram_len;
158
159 bufsz = len * 4 + 256;
160 buf = kzalloc(bufsz, GFP_KERNEL);
161 if (!buf)
162 return -ENOMEM;
163
164 ptr = kzalloc(len, GFP_KERNEL);
165 if (!ptr) {
166 kfree(buf);
167 return -ENOMEM;
168 }
169
170 pos += scnprintf(buf + pos, bufsz - pos, "sram_len: 0x%x\n", len);
171 pos += scnprintf(buf + pos, bufsz - pos, "sram_offset: 0x%x\n",
172 mvm->dbgfs_sram_offset);
173
174 iwl_trans_read_mem_bytes(mvm->trans,
175 mvm->dbgfs_sram_offset,
176 ptr, len);
177 for (ofs = 0; ofs < len; ofs += 16) {
178 pos += scnprintf(buf + pos, bufsz - pos, "0x%.4x ", ofs);
179 hex_dump_to_buffer(ptr + ofs, 16, 16, 1, buf + pos,
180 bufsz - pos, false);
181 pos += strlen(buf + pos);
182 if (bufsz - pos > 0)
183 buf[pos++] = '\n';
184 }
185
186 ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
187
188 kfree(buf);
189 kfree(ptr);
190
191 return ret;
192 }
193
194 static ssize_t iwl_dbgfs_sram_write(struct file *file,
195 const char __user *user_buf, size_t count,
196 loff_t *ppos)
197 {
198 struct iwl_mvm *mvm = file->private_data;
199 char buf[64];
200 int buf_size;
201 u32 offset, len;
202
203 memset(buf, 0, sizeof(buf));
204 buf_size = min(count, sizeof(buf) - 1);
205 if (copy_from_user(buf, user_buf, buf_size))
206 return -EFAULT;
207
208 if (sscanf(buf, "%x,%x", &offset, &len) == 2) {
209 if ((offset & 0x3) || (len & 0x3))
210 return -EINVAL;
211 mvm->dbgfs_sram_offset = offset;
212 mvm->dbgfs_sram_len = len;
213 } else {
214 mvm->dbgfs_sram_offset = 0;
215 mvm->dbgfs_sram_len = 0;
216 }
217
218 return count;
219 }
220
221 static ssize_t iwl_dbgfs_stations_read(struct file *file, char __user *user_buf,
222 size_t count, loff_t *ppos)
223 {
224 struct iwl_mvm *mvm = file->private_data;
225 struct ieee80211_sta *sta;
226 char buf[400];
227 int i, pos = 0, bufsz = sizeof(buf);
228
229 mutex_lock(&mvm->mutex);
230
231 for (i = 0; i < IWL_MVM_STATION_COUNT; i++) {
232 pos += scnprintf(buf + pos, bufsz - pos, "%.2d: ", i);
233 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
234 lockdep_is_held(&mvm->mutex));
235 if (!sta)
236 pos += scnprintf(buf + pos, bufsz - pos, "N/A\n");
237 else if (IS_ERR(sta))
238 pos += scnprintf(buf + pos, bufsz - pos, "%ld\n",
239 PTR_ERR(sta));
240 else
241 pos += scnprintf(buf + pos, bufsz - pos, "%pM\n",
242 sta->addr);
243 }
244
245 mutex_unlock(&mvm->mutex);
246
247 return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
248 }
249
250 static ssize_t iwl_dbgfs_power_down_allow_write(struct file *file,
251 const char __user *user_buf,
252 size_t count, loff_t *ppos)
253 {
254 struct iwl_mvm *mvm = file->private_data;
255 char buf[8] = {};
256 int allow;
257
258 if (!mvm->ucode_loaded)
259 return -EIO;
260
261 if (copy_from_user(buf, user_buf, sizeof(buf)))
262 return -EFAULT;
263
264 if (sscanf(buf, "%d", &allow) != 1)
265 return -EINVAL;
266
267 IWL_DEBUG_POWER(mvm, "%s device power down\n",
268 allow ? "allow" : "prevent");
269
270 /*
271 * TODO: Send REPLY_DEBUG_CMD (0xf0) when FW support it
272 */
273
274 return count;
275 }
276
277 static ssize_t iwl_dbgfs_power_down_d3_allow_write(struct file *file,
278 const char __user *user_buf,
279 size_t count, loff_t *ppos)
280 {
281 struct iwl_mvm *mvm = file->private_data;
282 char buf[8] = {};
283 int allow;
284
285 if (copy_from_user(buf, user_buf, sizeof(buf)))
286 return -EFAULT;
287
288 if (sscanf(buf, "%d", &allow) != 1)
289 return -EINVAL;
290
291 IWL_DEBUG_POWER(mvm, "%s device power down in d3\n",
292 allow ? "allow" : "prevent");
293
294 /*
295 * TODO: When WoWLAN FW alive notification happens, driver will send
296 * REPLY_DEBUG_CMD setting power_down_allow flag according to
297 * mvm->prevent_power_down_d3
298 */
299 mvm->prevent_power_down_d3 = !allow;
300
301 return count;
302 }
303
304 static ssize_t iwl_dbgfs_mac_params_read(struct file *file,
305 char __user *user_buf,
306 size_t count, loff_t *ppos)
307 {
308 struct ieee80211_vif *vif = file->private_data;
309 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
310 struct iwl_mvm *mvm = mvmvif->dbgfs_data;
311 u8 ap_sta_id;
312 struct ieee80211_chanctx_conf *chanctx_conf;
313 char buf[512];
314 int bufsz = sizeof(buf);
315 int pos = 0;
316 int i;
317
318 mutex_lock(&mvm->mutex);
319
320 ap_sta_id = mvmvif->ap_sta_id;
321
322 pos += scnprintf(buf+pos, bufsz-pos, "mac id/color: %d / %d\n",
323 mvmvif->id, mvmvif->color);
324 pos += scnprintf(buf+pos, bufsz-pos, "bssid: %pM\n",
325 vif->bss_conf.bssid);
326 pos += scnprintf(buf+pos, bufsz-pos, "QoS:\n");
327 for (i = 0; i < ARRAY_SIZE(mvmvif->queue_params); i++) {
328 pos += scnprintf(buf+pos, bufsz-pos,
329 "\t%d: txop:%d - cw_min:%d - cw_max = %d - aifs = %d upasd = %d\n",
330 i, mvmvif->queue_params[i].txop,
331 mvmvif->queue_params[i].cw_min,
332 mvmvif->queue_params[i].cw_max,
333 mvmvif->queue_params[i].aifs,
334 mvmvif->queue_params[i].uapsd);
335 }
336
337 if (vif->type == NL80211_IFTYPE_STATION &&
338 ap_sta_id != IWL_MVM_STATION_COUNT) {
339 struct ieee80211_sta *sta;
340 struct iwl_mvm_sta *mvm_sta;
341
342 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[ap_sta_id],
343 lockdep_is_held(&mvm->mutex));
344 mvm_sta = (void *)sta->drv_priv;
345 pos += scnprintf(buf+pos, bufsz-pos,
346 "ap_sta_id %d - reduced Tx power %d\n",
347 ap_sta_id, mvm_sta->bt_reduced_txpower);
348 }
349
350 rcu_read_lock();
351 chanctx_conf = rcu_dereference(vif->chanctx_conf);
352 if (chanctx_conf) {
353 pos += scnprintf(buf+pos, bufsz-pos,
354 "idle rx chains %d, active rx chains: %d\n",
355 chanctx_conf->rx_chains_static,
356 chanctx_conf->rx_chains_dynamic);
357 }
358 rcu_read_unlock();
359
360 mutex_unlock(&mvm->mutex);
361
362 return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
363 }
364
365 #define BT_MBOX_MSG(_notif, _num, _field) \
366 ((le32_to_cpu((_notif)->mbox_msg[(_num)]) & BT_MBOX##_num##_##_field)\
367 >> BT_MBOX##_num##_##_field##_POS)
368
369
370 #define BT_MBOX_PRINT(_num, _field, _end) \
371 pos += scnprintf(buf + pos, bufsz - pos, \
372 "\t%s: %d%s", \
373 #_field, \
374 BT_MBOX_MSG(notif, _num, _field), \
375 true ? "\n" : ", ");
376
377 static ssize_t iwl_dbgfs_bt_notif_read(struct file *file, char __user *user_buf,
378 size_t count, loff_t *ppos)
379 {
380 struct iwl_mvm *mvm = file->private_data;
381 struct iwl_bt_coex_profile_notif *notif = &mvm->last_bt_notif;
382 char *buf;
383 int ret, pos = 0, bufsz = sizeof(char) * 1024;
384
385 buf = kmalloc(bufsz, GFP_KERNEL);
386 if (!buf)
387 return -ENOMEM;
388
389 mutex_lock(&mvm->mutex);
390
391 pos += scnprintf(buf+pos, bufsz-pos, "MBOX dw0:\n");
392
393 BT_MBOX_PRINT(0, LE_SLAVE_LAT, false);
394 BT_MBOX_PRINT(0, LE_PROF1, false);
395 BT_MBOX_PRINT(0, LE_PROF2, false);
396 BT_MBOX_PRINT(0, LE_PROF_OTHER, false);
397 BT_MBOX_PRINT(0, CHL_SEQ_N, false);
398 BT_MBOX_PRINT(0, INBAND_S, false);
399 BT_MBOX_PRINT(0, LE_MIN_RSSI, false);
400 BT_MBOX_PRINT(0, LE_SCAN, false);
401 BT_MBOX_PRINT(0, LE_ADV, false);
402 BT_MBOX_PRINT(0, LE_MAX_TX_POWER, false);
403 BT_MBOX_PRINT(0, OPEN_CON_1, true);
404
405 pos += scnprintf(buf+pos, bufsz-pos, "MBOX dw1:\n");
406
407 BT_MBOX_PRINT(1, BR_MAX_TX_POWER, false);
408 BT_MBOX_PRINT(1, IP_SR, false);
409 BT_MBOX_PRINT(1, LE_MSTR, false);
410 BT_MBOX_PRINT(1, AGGR_TRFC_LD, false);
411 BT_MBOX_PRINT(1, MSG_TYPE, false);
412 BT_MBOX_PRINT(1, SSN, true);
413
414 pos += scnprintf(buf+pos, bufsz-pos, "MBOX dw2:\n");
415
416 BT_MBOX_PRINT(2, SNIFF_ACT, false);
417 BT_MBOX_PRINT(2, PAG, false);
418 BT_MBOX_PRINT(2, INQUIRY, false);
419 BT_MBOX_PRINT(2, CONN, false);
420 BT_MBOX_PRINT(2, SNIFF_INTERVAL, false);
421 BT_MBOX_PRINT(2, DISC, false);
422 BT_MBOX_PRINT(2, SCO_TX_ACT, false);
423 BT_MBOX_PRINT(2, SCO_RX_ACT, false);
424 BT_MBOX_PRINT(2, ESCO_RE_TX, false);
425 BT_MBOX_PRINT(2, SCO_DURATION, true);
426
427 pos += scnprintf(buf+pos, bufsz-pos, "MBOX dw3:\n");
428
429 BT_MBOX_PRINT(3, SCO_STATE, false);
430 BT_MBOX_PRINT(3, SNIFF_STATE, false);
431 BT_MBOX_PRINT(3, A2DP_STATE, false);
432 BT_MBOX_PRINT(3, ACL_STATE, false);
433 BT_MBOX_PRINT(3, MSTR_STATE, false);
434 BT_MBOX_PRINT(3, OBX_STATE, false);
435 BT_MBOX_PRINT(3, OPEN_CON_2, false);
436 BT_MBOX_PRINT(3, TRAFFIC_LOAD, false);
437 BT_MBOX_PRINT(3, CHL_SEQN_LSB, false);
438 BT_MBOX_PRINT(3, INBAND_P, false);
439 BT_MBOX_PRINT(3, MSG_TYPE_2, false);
440 BT_MBOX_PRINT(3, SSN_2, false);
441 BT_MBOX_PRINT(3, UPDATE_REQUEST, true);
442
443 pos += scnprintf(buf+pos, bufsz-pos, "bt_status = %d\n",
444 notif->bt_status);
445 pos += scnprintf(buf+pos, bufsz-pos, "bt_open_conn = %d\n",
446 notif->bt_open_conn);
447 pos += scnprintf(buf+pos, bufsz-pos, "bt_traffic_load = %d\n",
448 notif->bt_traffic_load);
449 pos += scnprintf(buf+pos, bufsz-pos, "bt_agg_traffic_load = %d\n",
450 notif->bt_agg_traffic_load);
451 pos += scnprintf(buf+pos, bufsz-pos, "bt_ci_compliance = %d\n",
452 notif->bt_ci_compliance);
453
454 mutex_unlock(&mvm->mutex);
455
456 ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
457 kfree(buf);
458
459 return ret;
460 }
461 #undef BT_MBOX_PRINT
462
463 static ssize_t iwl_dbgfs_fw_restart_write(struct file *file,
464 const char __user *user_buf,
465 size_t count, loff_t *ppos)
466 {
467 struct iwl_mvm *mvm = file->private_data;
468 bool restart_fw = iwlwifi_mod_params.restart_fw;
469 int ret;
470
471 iwlwifi_mod_params.restart_fw = true;
472
473 mutex_lock(&mvm->mutex);
474
475 /* take the return value to make compiler happy - it will fail anyway */
476 ret = iwl_mvm_send_cmd_pdu(mvm, REPLY_ERROR, CMD_SYNC, 0, NULL);
477
478 mutex_unlock(&mvm->mutex);
479
480 iwlwifi_mod_params.restart_fw = restart_fw;
481
482 return count;
483 }
484
485 #ifdef CONFIG_PM_SLEEP
486 static ssize_t iwl_dbgfs_d3_sram_write(struct file *file,
487 const char __user *user_buf,
488 size_t count, loff_t *ppos)
489 {
490 struct iwl_mvm *mvm = file->private_data;
491 char buf[8] = {};
492 int store;
493
494 if (copy_from_user(buf, user_buf, sizeof(buf)))
495 return -EFAULT;
496
497 if (sscanf(buf, "%d", &store) != 1)
498 return -EINVAL;
499
500 mvm->store_d3_resume_sram = store;
501
502 return count;
503 }
504
505 static ssize_t iwl_dbgfs_d3_sram_read(struct file *file, char __user *user_buf,
506 size_t count, loff_t *ppos)
507 {
508 struct iwl_mvm *mvm = file->private_data;
509 const struct fw_img *img;
510 int ofs, len, pos = 0;
511 size_t bufsz, ret;
512 char *buf;
513 u8 *ptr = mvm->d3_resume_sram;
514
515 img = &mvm->fw->img[IWL_UCODE_WOWLAN];
516 len = img->sec[IWL_UCODE_SECTION_DATA].len;
517
518 bufsz = len * 4 + 256;
519 buf = kzalloc(bufsz, GFP_KERNEL);
520 if (!buf)
521 return -ENOMEM;
522
523 pos += scnprintf(buf, bufsz, "D3 SRAM capture: %sabled\n",
524 mvm->store_d3_resume_sram ? "en" : "dis");
525
526 if (ptr) {
527 for (ofs = 0; ofs < len; ofs += 16) {
528 pos += scnprintf(buf + pos, bufsz - pos,
529 "0x%.4x ", ofs);
530 hex_dump_to_buffer(ptr + ofs, 16, 16, 1, buf + pos,
531 bufsz - pos, false);
532 pos += strlen(buf + pos);
533 if (bufsz - pos > 0)
534 buf[pos++] = '\n';
535 }
536 } else {
537 pos += scnprintf(buf + pos, bufsz - pos,
538 "(no data captured)\n");
539 }
540
541 ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
542
543 kfree(buf);
544
545 return ret;
546 }
547 #endif
548
549 #define MVM_DEBUGFS_READ_FILE_OPS(name) \
550 static const struct file_operations iwl_dbgfs_##name##_ops = { \
551 .read = iwl_dbgfs_##name##_read, \
552 .open = simple_open, \
553 .llseek = generic_file_llseek, \
554 }
555
556 #define MVM_DEBUGFS_READ_WRITE_FILE_OPS(name) \
557 static const struct file_operations iwl_dbgfs_##name##_ops = { \
558 .write = iwl_dbgfs_##name##_write, \
559 .read = iwl_dbgfs_##name##_read, \
560 .open = simple_open, \
561 .llseek = generic_file_llseek, \
562 };
563
564 #define MVM_DEBUGFS_WRITE_FILE_OPS(name) \
565 static const struct file_operations iwl_dbgfs_##name##_ops = { \
566 .write = iwl_dbgfs_##name##_write, \
567 .open = simple_open, \
568 .llseek = generic_file_llseek, \
569 };
570
571 #define MVM_DEBUGFS_ADD_FILE(name, parent, mode) do { \
572 if (!debugfs_create_file(#name, mode, parent, mvm, \
573 &iwl_dbgfs_##name##_ops)) \
574 goto err; \
575 } while (0)
576
577 #define MVM_DEBUGFS_ADD_FILE_VIF(name, parent, mode) do { \
578 if (!debugfs_create_file(#name, mode, parent, vif, \
579 &iwl_dbgfs_##name##_ops)) \
580 goto err; \
581 } while (0)
582
583 /* Device wide debugfs entries */
584 MVM_DEBUGFS_WRITE_FILE_OPS(tx_flush);
585 MVM_DEBUGFS_WRITE_FILE_OPS(sta_drain);
586 MVM_DEBUGFS_READ_WRITE_FILE_OPS(sram);
587 MVM_DEBUGFS_READ_FILE_OPS(stations);
588 MVM_DEBUGFS_READ_FILE_OPS(bt_notif);
589 MVM_DEBUGFS_WRITE_FILE_OPS(power_down_allow);
590 MVM_DEBUGFS_WRITE_FILE_OPS(power_down_d3_allow);
591 MVM_DEBUGFS_WRITE_FILE_OPS(fw_restart);
592 #ifdef CONFIG_PM_SLEEP
593 MVM_DEBUGFS_READ_WRITE_FILE_OPS(d3_sram);
594 #endif
595
596 /* Interface specific debugfs entries */
597 MVM_DEBUGFS_READ_FILE_OPS(mac_params);
598
599 int iwl_mvm_dbgfs_register(struct iwl_mvm *mvm, struct dentry *dbgfs_dir)
600 {
601 char buf[100];
602
603 mvm->debugfs_dir = dbgfs_dir;
604
605 MVM_DEBUGFS_ADD_FILE(tx_flush, mvm->debugfs_dir, S_IWUSR);
606 MVM_DEBUGFS_ADD_FILE(sta_drain, mvm->debugfs_dir, S_IWUSR);
607 MVM_DEBUGFS_ADD_FILE(sram, mvm->debugfs_dir, S_IWUSR | S_IRUSR);
608 MVM_DEBUGFS_ADD_FILE(stations, dbgfs_dir, S_IRUSR);
609 MVM_DEBUGFS_ADD_FILE(bt_notif, dbgfs_dir, S_IRUSR);
610 MVM_DEBUGFS_ADD_FILE(power_down_allow, mvm->debugfs_dir, S_IWUSR);
611 MVM_DEBUGFS_ADD_FILE(power_down_d3_allow, mvm->debugfs_dir, S_IWUSR);
612 MVM_DEBUGFS_ADD_FILE(fw_restart, mvm->debugfs_dir, S_IWUSR);
613 #ifdef CONFIG_PM_SLEEP
614 MVM_DEBUGFS_ADD_FILE(d3_sram, mvm->debugfs_dir, S_IRUSR | S_IWUSR);
615 #endif
616
617 /*
618 * Create a symlink with mac80211. It will be removed when mac80211
619 * exists (before the opmode exists which removes the target.)
620 */
621 snprintf(buf, 100, "../../%s/%s",
622 dbgfs_dir->d_parent->d_parent->d_name.name,
623 dbgfs_dir->d_parent->d_name.name);
624 if (!debugfs_create_symlink("iwlwifi", mvm->hw->wiphy->debugfsdir, buf))
625 goto err;
626
627 return 0;
628 err:
629 IWL_ERR(mvm, "Can't create the mvm debugfs directory\n");
630 return -ENOMEM;
631 }
632
633 void iwl_mvm_vif_dbgfs_register(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
634 {
635 struct dentry *dbgfs_dir = vif->debugfs_dir;
636 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
637 char buf[100];
638
639 if (!dbgfs_dir)
640 return;
641
642 mvmvif->dbgfs_dir = debugfs_create_dir("iwlmvm", dbgfs_dir);
643 mvmvif->dbgfs_data = mvm;
644
645 if (!mvmvif->dbgfs_dir) {
646 IWL_ERR(mvm, "Failed to create debugfs directory under %s\n",
647 dbgfs_dir->d_name.name);
648 return;
649 }
650
651 MVM_DEBUGFS_ADD_FILE_VIF(mac_params, mvmvif->dbgfs_dir,
652 S_IRUSR);
653
654 /*
655 * Create symlink for convenience pointing to interface specific
656 * debugfs entries for the driver. For example, under
657 * /sys/kernel/debug/iwlwifi/0000\:02\:00.0/iwlmvm/
658 * find
659 * netdev:wlan0 -> ../../../ieee80211/phy0/netdev:wlan0/iwlmvm/
660 */
661 snprintf(buf, 100, "../../../%s/%s/%s/%s",
662 dbgfs_dir->d_parent->d_parent->d_name.name,
663 dbgfs_dir->d_parent->d_name.name,
664 dbgfs_dir->d_name.name,
665 mvmvif->dbgfs_dir->d_name.name);
666
667 mvmvif->dbgfs_slink = debugfs_create_symlink(dbgfs_dir->d_name.name,
668 mvm->debugfs_dir, buf);
669 if (!mvmvif->dbgfs_slink)
670 IWL_ERR(mvm, "Can't create debugfs symbolic link under %s\n",
671 dbgfs_dir->d_name.name);
672 return;
673 err:
674 IWL_ERR(mvm, "Can't create debugfs entity\n");
675 }
676
677 void iwl_mvm_vif_dbgfs_clean(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
678 {
679 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
680
681 debugfs_remove(mvmvif->dbgfs_slink);
682 mvmvif->dbgfs_slink = NULL;
683
684 debugfs_remove_recursive(mvmvif->dbgfs_dir);
685 mvmvif->dbgfs_dir = NULL;
686 }
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