1 /******************************************************************************
2  *
3  * GPL LICENSE SUMMARY
4  *
5  * Copyright(c) 2008 - 2014 Intel Corporation. All rights reserved.
6  * Copyright (C) 2018 Intel Corporation
7  *
8  * This program is free software; you can redistribute it and/or modify
9  * it under the terms of version 2 of the GNU General Public License as
10  * published by the Free Software Foundation.
11  *
12  * This program is distributed in the hope that it will be useful, but
13  * WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15  * General Public License for more details.
16  *
17  * The full GNU General Public License is included in this distribution
18  * in the file called COPYING.
19  *
20  * Contact Information:
21  *  Intel Linux Wireless <linuxwifi@intel.com>
22  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
23  *****************************************************************************/
24 
25 #include <linux/slab.h>
26 #include <linux/kernel.h>
27 #include <linux/module.h>
28 #include <linux/debugfs.h>
29 #include <linux/ieee80211.h>
30 #include <net/mac80211.h>
31 
32 #include "iwl-debug.h"
33 #include "iwl-trans.h"
34 #include "iwl-io.h"
35 #include "dev.h"
36 #include "agn.h"
37 
38 /* create and remove of files */
39 #define DEBUGFS_ADD_FILE(name, parent, mode) do {			\
40 	debugfs_create_file(#name, mode, parent, priv,			\
41 			    &iwl_dbgfs_##name##_ops);			\
42 } while (0)
43 
44 /* file operation */
45 #define DEBUGFS_READ_FILE_OPS(name)                                     \
46 static const struct file_operations iwl_dbgfs_##name##_ops = {          \
47 	.read = iwl_dbgfs_##name##_read,				\
48 	.open = simple_open,						\
49 	.llseek = generic_file_llseek,					\
50 };
51 
52 #define DEBUGFS_WRITE_FILE_OPS(name)                                    \
53 static const struct file_operations iwl_dbgfs_##name##_ops = {          \
54 	.write = iwl_dbgfs_##name##_write,                              \
55 	.open = simple_open,						\
56 	.llseek = generic_file_llseek,					\
57 };
58 
59 
60 #define DEBUGFS_READ_WRITE_FILE_OPS(name)                               \
61 static const struct file_operations iwl_dbgfs_##name##_ops = {          \
62 	.write = iwl_dbgfs_##name##_write,                              \
63 	.read = iwl_dbgfs_##name##_read,                                \
64 	.open = simple_open,						\
65 	.llseek = generic_file_llseek,					\
66 };
67 
68 static ssize_t iwl_dbgfs_sram_read(struct file *file,
69 					char __user *user_buf,
70 					size_t count, loff_t *ppos)
71 {
72 	u32 val = 0;
73 	char *buf;
74 	ssize_t ret;
75 	int i = 0;
76 	bool device_format = false;
77 	int offset = 0;
78 	int len = 0;
79 	int pos = 0;
80 	int sram;
81 	struct iwl_priv *priv = file->private_data;
82 	const struct fw_img *img;
83 	size_t bufsz;
84 
85 	if (!iwl_is_ready_rf(priv))
86 		return -EAGAIN;
87 
88 	/* default is to dump the entire data segment */
89 	if (!priv->dbgfs_sram_offset && !priv->dbgfs_sram_len) {
90 		priv->dbgfs_sram_offset = 0x800000;
91 		if (!priv->ucode_loaded)
92 			return -EINVAL;
93 		img = &priv->fw->img[priv->cur_ucode];
94 		priv->dbgfs_sram_len = img->sec[IWL_UCODE_SECTION_DATA].len;
95 	}
96 	len = priv->dbgfs_sram_len;
97 
98 	if (len == -4) {
99 		device_format = true;
100 		len = 4;
101 	}
102 
103 	bufsz =  50 + len * 4;
104 	buf = kmalloc(bufsz, GFP_KERNEL);
105 	if (!buf)
106 		return -ENOMEM;
107 
108 	pos += scnprintf(buf + pos, bufsz - pos, "sram_len: 0x%x\n",
109 			 len);
110 	pos += scnprintf(buf + pos, bufsz - pos, "sram_offset: 0x%x\n",
111 			priv->dbgfs_sram_offset);
112 
113 	/* adjust sram address since reads are only on even u32 boundaries */
114 	offset = priv->dbgfs_sram_offset & 0x3;
115 	sram = priv->dbgfs_sram_offset & ~0x3;
116 
117 	/* read the first u32 from sram */
118 	val = iwl_trans_read_mem32(priv->trans, sram);
119 
120 	for (; len; len--) {
121 		/* put the address at the start of every line */
122 		if (i == 0)
123 			pos += scnprintf(buf + pos, bufsz - pos,
124 				"%08X: ", sram + offset);
125 
126 		if (device_format)
127 			pos += scnprintf(buf + pos, bufsz - pos,
128 				"%02x", (val >> (8 * (3 - offset))) & 0xff);
129 		else
130 			pos += scnprintf(buf + pos, bufsz - pos,
131 				"%02x ", (val >> (8 * offset)) & 0xff);
132 
133 		/* if all bytes processed, read the next u32 from sram */
134 		if (++offset == 4) {
135 			sram += 4;
136 			offset = 0;
137 			val = iwl_trans_read_mem32(priv->trans, sram);
138 		}
139 
140 		/* put in extra spaces and split lines for human readability */
141 		if (++i == 16) {
142 			i = 0;
143 			pos += scnprintf(buf + pos, bufsz - pos, "\n");
144 		} else if (!(i & 7)) {
145 			pos += scnprintf(buf + pos, bufsz - pos, "   ");
146 		} else if (!(i & 3)) {
147 			pos += scnprintf(buf + pos, bufsz - pos, " ");
148 		}
149 	}
150 	if (i)
151 		pos += scnprintf(buf + pos, bufsz - pos, "\n");
152 
153 	ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
154 	kfree(buf);
155 	return ret;
156 }
157 
158 static ssize_t iwl_dbgfs_sram_write(struct file *file,
159 					const char __user *user_buf,
160 					size_t count, loff_t *ppos)
161 {
162 	struct iwl_priv *priv = file->private_data;
163 	char buf[64];
164 	int buf_size;
165 	u32 offset, len;
166 
167 	memset(buf, 0, sizeof(buf));
168 	buf_size = min(count, sizeof(buf) -  1);
169 	if (copy_from_user(buf, user_buf, buf_size))
170 		return -EFAULT;
171 
172 	if (sscanf(buf, "%x,%x", &offset, &len) == 2) {
173 		priv->dbgfs_sram_offset = offset;
174 		priv->dbgfs_sram_len = len;
175 	} else if (sscanf(buf, "%x", &offset) == 1) {
176 		priv->dbgfs_sram_offset = offset;
177 		priv->dbgfs_sram_len = -4;
178 	} else {
179 		priv->dbgfs_sram_offset = 0;
180 		priv->dbgfs_sram_len = 0;
181 	}
182 
183 	return count;
184 }
185 
186 static ssize_t iwl_dbgfs_wowlan_sram_read(struct file *file,
187 					  char __user *user_buf,
188 					  size_t count, loff_t *ppos)
189 {
190 	struct iwl_priv *priv = file->private_data;
191 	const struct fw_img *img = &priv->fw->img[IWL_UCODE_WOWLAN];
192 
193 	if (!priv->wowlan_sram)
194 		return -ENODATA;
195 
196 	return simple_read_from_buffer(user_buf, count, ppos,
197 				       priv->wowlan_sram,
198 				       img->sec[IWL_UCODE_SECTION_DATA].len);
199 }
200 static ssize_t iwl_dbgfs_stations_read(struct file *file, char __user *user_buf,
201 					size_t count, loff_t *ppos)
202 {
203 	struct iwl_priv *priv = file->private_data;
204 	struct iwl_station_entry *station;
205 	struct iwl_tid_data *tid_data;
206 	char *buf;
207 	int i, j, pos = 0;
208 	ssize_t ret;
209 	/* Add 30 for initial string */
210 	const size_t bufsz = 30 + sizeof(char) * 500 * (priv->num_stations);
211 
212 	buf = kmalloc(bufsz, GFP_KERNEL);
213 	if (!buf)
214 		return -ENOMEM;
215 
216 	pos += scnprintf(buf + pos, bufsz - pos, "num of stations: %d\n\n",
217 			priv->num_stations);
218 
219 	for (i = 0; i < IWLAGN_STATION_COUNT; i++) {
220 		station = &priv->stations[i];
221 		if (!station->used)
222 			continue;
223 		pos += scnprintf(buf + pos, bufsz - pos,
224 				 "station %d - addr: %pM, flags: %#x\n",
225 				 i, station->sta.sta.addr,
226 				 station->sta.station_flags_msk);
227 		pos += scnprintf(buf + pos, bufsz - pos,
228 				"TID seqno  next_rclmd "
229 				"rate_n_flags state txq\n");
230 
231 		for (j = 0; j < IWL_MAX_TID_COUNT; j++) {
232 			tid_data = &priv->tid_data[i][j];
233 			pos += scnprintf(buf + pos, bufsz - pos,
234 				"%d:  0x%.4x 0x%.4x     0x%.8x   "
235 				"%d     %.2d",
236 				j, tid_data->seq_number,
237 				tid_data->next_reclaimed,
238 				tid_data->agg.rate_n_flags,
239 				tid_data->agg.state,
240 				tid_data->agg.txq_id);
241 
242 			if (tid_data->agg.wait_for_ba)
243 				pos += scnprintf(buf + pos, bufsz - pos,
244 						 " - waitforba");
245 			pos += scnprintf(buf + pos, bufsz - pos, "\n");
246 		}
247 
248 		pos += scnprintf(buf + pos, bufsz - pos, "\n");
249 	}
250 
251 	ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
252 	kfree(buf);
253 	return ret;
254 }
255 
256 static ssize_t iwl_dbgfs_nvm_read(struct file *file,
257 				       char __user *user_buf,
258 				       size_t count,
259 				       loff_t *ppos)
260 {
261 	ssize_t ret;
262 	struct iwl_priv *priv = file->private_data;
263 	int pos = 0, ofs = 0, buf_size = 0;
264 	const u8 *ptr;
265 	char *buf;
266 	u16 nvm_ver;
267 	size_t eeprom_len = priv->eeprom_blob_size;
268 	buf_size = 4 * eeprom_len + 256;
269 
270 	if (eeprom_len % 16)
271 		return -ENODATA;
272 
273 	ptr = priv->eeprom_blob;
274 	if (!ptr)
275 		return -ENOMEM;
276 
277 	/* 4 characters for byte 0xYY */
278 	buf = kzalloc(buf_size, GFP_KERNEL);
279 	if (!buf)
280 		return -ENOMEM;
281 
282 	nvm_ver = priv->nvm_data->nvm_version;
283 	pos += scnprintf(buf + pos, buf_size - pos,
284 			 "NVM version: 0x%x\n", nvm_ver);
285 	for (ofs = 0 ; ofs < eeprom_len ; ofs += 16) {
286 		pos += scnprintf(buf + pos, buf_size - pos, "0x%.4x %16ph\n",
287 				 ofs, ptr + ofs);
288 	}
289 
290 	ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
291 	kfree(buf);
292 	return ret;
293 }
294 
295 static ssize_t iwl_dbgfs_channels_read(struct file *file, char __user *user_buf,
296 				       size_t count, loff_t *ppos)
297 {
298 	struct iwl_priv *priv = file->private_data;
299 	struct ieee80211_channel *channels = NULL;
300 	const struct ieee80211_supported_band *supp_band = NULL;
301 	int pos = 0, i, bufsz = PAGE_SIZE;
302 	char *buf;
303 	ssize_t ret;
304 
305 	buf = kzalloc(bufsz, GFP_KERNEL);
306 	if (!buf)
307 		return -ENOMEM;
308 
309 	supp_band = iwl_get_hw_mode(priv, NL80211_BAND_2GHZ);
310 	if (supp_band) {
311 		channels = supp_band->channels;
312 
313 		pos += scnprintf(buf + pos, bufsz - pos,
314 				"Displaying %d channels in 2.4GHz band 802.11bg):\n",
315 				supp_band->n_channels);
316 
317 		for (i = 0; i < supp_band->n_channels; i++)
318 			pos += scnprintf(buf + pos, bufsz - pos,
319 					"%d: %ddBm: BSS%s%s, %s.\n",
320 					channels[i].hw_value,
321 					channels[i].max_power,
322 					channels[i].flags & IEEE80211_CHAN_RADAR ?
323 					" (IEEE 802.11h required)" : "",
324 					((channels[i].flags & IEEE80211_CHAN_NO_IR)
325 					|| (channels[i].flags &
326 					IEEE80211_CHAN_RADAR)) ? "" :
327 					", IBSS",
328 					channels[i].flags &
329 					IEEE80211_CHAN_NO_IR ?
330 					"passive only" : "active/passive");
331 	}
332 	supp_band = iwl_get_hw_mode(priv, NL80211_BAND_5GHZ);
333 	if (supp_band) {
334 		channels = supp_band->channels;
335 
336 		pos += scnprintf(buf + pos, bufsz - pos,
337 				"Displaying %d channels in 5.2GHz band (802.11a)\n",
338 				supp_band->n_channels);
339 
340 		for (i = 0; i < supp_band->n_channels; i++)
341 			pos += scnprintf(buf + pos, bufsz - pos,
342 					"%d: %ddBm: BSS%s%s, %s.\n",
343 					channels[i].hw_value,
344 					channels[i].max_power,
345 					channels[i].flags & IEEE80211_CHAN_RADAR ?
346 					" (IEEE 802.11h required)" : "",
347 					((channels[i].flags & IEEE80211_CHAN_NO_IR)
348 					|| (channels[i].flags &
349 					IEEE80211_CHAN_RADAR)) ? "" :
350 					", IBSS",
351 					channels[i].flags &
352 					IEEE80211_CHAN_NO_IR ?
353 					"passive only" : "active/passive");
354 	}
355 	ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
356 	kfree(buf);
357 	return ret;
358 }
359 
360 static ssize_t iwl_dbgfs_status_read(struct file *file,
361 						char __user *user_buf,
362 						size_t count, loff_t *ppos) {
363 
364 	struct iwl_priv *priv = file->private_data;
365 	char buf[512];
366 	int pos = 0;
367 	const size_t bufsz = sizeof(buf);
368 
369 	pos += scnprintf(buf + pos, bufsz - pos, "STATUS_RF_KILL_HW:\t %d\n",
370 		test_bit(STATUS_RF_KILL_HW, &priv->status));
371 	pos += scnprintf(buf + pos, bufsz - pos, "STATUS_CT_KILL:\t\t %d\n",
372 		test_bit(STATUS_CT_KILL, &priv->status));
373 	pos += scnprintf(buf + pos, bufsz - pos, "STATUS_ALIVE:\t\t %d\n",
374 		test_bit(STATUS_ALIVE, &priv->status));
375 	pos += scnprintf(buf + pos, bufsz - pos, "STATUS_READY:\t\t %d\n",
376 		test_bit(STATUS_READY, &priv->status));
377 	pos += scnprintf(buf + pos, bufsz - pos, "STATUS_EXIT_PENDING:\t %d\n",
378 		test_bit(STATUS_EXIT_PENDING, &priv->status));
379 	pos += scnprintf(buf + pos, bufsz - pos, "STATUS_STATISTICS:\t %d\n",
380 		test_bit(STATUS_STATISTICS, &priv->status));
381 	pos += scnprintf(buf + pos, bufsz - pos, "STATUS_SCANNING:\t %d\n",
382 		test_bit(STATUS_SCANNING, &priv->status));
383 	pos += scnprintf(buf + pos, bufsz - pos, "STATUS_SCAN_ABORTING:\t %d\n",
384 		test_bit(STATUS_SCAN_ABORTING, &priv->status));
385 	pos += scnprintf(buf + pos, bufsz - pos, "STATUS_SCAN_HW:\t\t %d\n",
386 		test_bit(STATUS_SCAN_HW, &priv->status));
387 	pos += scnprintf(buf + pos, bufsz - pos, "STATUS_POWER_PMI:\t %d\n",
388 		test_bit(STATUS_POWER_PMI, &priv->status));
389 	pos += scnprintf(buf + pos, bufsz - pos, "STATUS_FW_ERROR:\t %d\n",
390 		test_bit(STATUS_FW_ERROR, &priv->status));
391 	return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
392 }
393 
394 static ssize_t iwl_dbgfs_rx_handlers_read(struct file *file,
395 					char __user *user_buf,
396 					size_t count, loff_t *ppos) {
397 
398 	struct iwl_priv *priv = file->private_data;
399 
400 	int pos = 0;
401 	int cnt = 0;
402 	char *buf;
403 	int bufsz = 24 * 64; /* 24 items * 64 char per item */
404 	ssize_t ret;
405 
406 	buf = kzalloc(bufsz, GFP_KERNEL);
407 	if (!buf)
408 		return -ENOMEM;
409 
410 	for (cnt = 0; cnt < REPLY_MAX; cnt++) {
411 		if (priv->rx_handlers_stats[cnt] > 0)
412 			pos += scnprintf(buf + pos, bufsz - pos,
413 				"\tRx handler[%36s]:\t\t %u\n",
414 				iwl_get_cmd_string(priv->trans, (u32)cnt),
415 				priv->rx_handlers_stats[cnt]);
416 	}
417 
418 	ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
419 	kfree(buf);
420 	return ret;
421 }
422 
423 static ssize_t iwl_dbgfs_rx_handlers_write(struct file *file,
424 					 const char __user *user_buf,
425 					 size_t count, loff_t *ppos)
426 {
427 	struct iwl_priv *priv = file->private_data;
428 
429 	char buf[8];
430 	int buf_size;
431 	u32 reset_flag;
432 
433 	memset(buf, 0, sizeof(buf));
434 	buf_size = min(count, sizeof(buf) -  1);
435 	if (copy_from_user(buf, user_buf, buf_size))
436 		return -EFAULT;
437 	if (sscanf(buf, "%x", &reset_flag) != 1)
438 		return -EFAULT;
439 	if (reset_flag == 0)
440 		memset(&priv->rx_handlers_stats[0], 0,
441 			sizeof(priv->rx_handlers_stats));
442 
443 	return count;
444 }
445 
446 static ssize_t iwl_dbgfs_qos_read(struct file *file, char __user *user_buf,
447 				       size_t count, loff_t *ppos)
448 {
449 	struct iwl_priv *priv = file->private_data;
450 	struct iwl_rxon_context *ctx;
451 	int pos = 0, i;
452 	char buf[256 * NUM_IWL_RXON_CTX];
453 	const size_t bufsz = sizeof(buf);
454 
455 	for_each_context(priv, ctx) {
456 		pos += scnprintf(buf + pos, bufsz - pos, "context %d:\n",
457 				 ctx->ctxid);
458 		for (i = 0; i < AC_NUM; i++) {
459 			pos += scnprintf(buf + pos, bufsz - pos,
460 				"\tcw_min\tcw_max\taifsn\ttxop\n");
461 			pos += scnprintf(buf + pos, bufsz - pos,
462 				"AC[%d]\t%u\t%u\t%u\t%u\n", i,
463 				ctx->qos_data.def_qos_parm.ac[i].cw_min,
464 				ctx->qos_data.def_qos_parm.ac[i].cw_max,
465 				ctx->qos_data.def_qos_parm.ac[i].aifsn,
466 				ctx->qos_data.def_qos_parm.ac[i].edca_txop);
467 		}
468 		pos += scnprintf(buf + pos, bufsz - pos, "\n");
469 	}
470 	return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
471 }
472 
473 static ssize_t iwl_dbgfs_thermal_throttling_read(struct file *file,
474 				char __user *user_buf,
475 				size_t count, loff_t *ppos)
476 {
477 	struct iwl_priv *priv = file->private_data;
478 	struct iwl_tt_mgmt *tt = &priv->thermal_throttle;
479 	struct iwl_tt_restriction *restriction;
480 	char buf[100];
481 	int pos = 0;
482 	const size_t bufsz = sizeof(buf);
483 
484 	pos += scnprintf(buf + pos, bufsz - pos,
485 			"Thermal Throttling Mode: %s\n",
486 			tt->advanced_tt ? "Advance" : "Legacy");
487 	pos += scnprintf(buf + pos, bufsz - pos,
488 			"Thermal Throttling State: %d\n",
489 			tt->state);
490 	if (tt->advanced_tt) {
491 		restriction = tt->restriction + tt->state;
492 		pos += scnprintf(buf + pos, bufsz - pos,
493 				"Tx mode: %d\n",
494 				restriction->tx_stream);
495 		pos += scnprintf(buf + pos, bufsz - pos,
496 				"Rx mode: %d\n",
497 				restriction->rx_stream);
498 		pos += scnprintf(buf + pos, bufsz - pos,
499 				"HT mode: %d\n",
500 				restriction->is_ht);
501 	}
502 	return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
503 }
504 
505 static ssize_t iwl_dbgfs_disable_ht40_write(struct file *file,
506 					 const char __user *user_buf,
507 					 size_t count, loff_t *ppos)
508 {
509 	struct iwl_priv *priv = file->private_data;
510 	char buf[8];
511 	int buf_size;
512 	int ht40;
513 
514 	memset(buf, 0, sizeof(buf));
515 	buf_size = min(count, sizeof(buf) -  1);
516 	if (copy_from_user(buf, user_buf, buf_size))
517 		return -EFAULT;
518 	if (sscanf(buf, "%d", &ht40) != 1)
519 		return -EFAULT;
520 	if (!iwl_is_any_associated(priv))
521 		priv->disable_ht40 = ht40 ? true : false;
522 	else
523 		return -EINVAL;
524 
525 	return count;
526 }
527 
528 static ssize_t iwl_dbgfs_disable_ht40_read(struct file *file,
529 					 char __user *user_buf,
530 					 size_t count, loff_t *ppos)
531 {
532 	struct iwl_priv *priv = file->private_data;
533 	char buf[100];
534 	int pos = 0;
535 	const size_t bufsz = sizeof(buf);
536 
537 	pos += scnprintf(buf + pos, bufsz - pos,
538 			"11n 40MHz Mode: %s\n",
539 			priv->disable_ht40 ? "Disabled" : "Enabled");
540 	return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
541 }
542 
543 static ssize_t iwl_dbgfs_temperature_read(struct file *file,
544 					 char __user *user_buf,
545 					 size_t count, loff_t *ppos)
546 {
547 	struct iwl_priv *priv = file->private_data;
548 	char buf[8];
549 	int pos = 0;
550 	const size_t bufsz = sizeof(buf);
551 
552 	pos += scnprintf(buf + pos, bufsz - pos, "%d\n", priv->temperature);
553 	return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
554 }
555 
556 
557 static ssize_t iwl_dbgfs_sleep_level_override_write(struct file *file,
558 						    const char __user *user_buf,
559 						    size_t count, loff_t *ppos)
560 {
561 	struct iwl_priv *priv = file->private_data;
562 	char buf[8];
563 	int buf_size;
564 	int value;
565 
566 	memset(buf, 0, sizeof(buf));
567 	buf_size = min(count, sizeof(buf) -  1);
568 	if (copy_from_user(buf, user_buf, buf_size))
569 		return -EFAULT;
570 
571 	if (sscanf(buf, "%d", &value) != 1)
572 		return -EINVAL;
573 
574 	/*
575 	 * Our users expect 0 to be "CAM", but 0 isn't actually
576 	 * valid here. However, let's not confuse them and present
577 	 * IWL_POWER_INDEX_1 as "1", not "0".
578 	 */
579 	if (value == 0)
580 		return -EINVAL;
581 	else if (value > 0)
582 		value -= 1;
583 
584 	if (value != -1 && (value < 0 || value >= IWL_POWER_NUM))
585 		return -EINVAL;
586 
587 	if (!iwl_is_ready_rf(priv))
588 		return -EAGAIN;
589 
590 	priv->power_data.debug_sleep_level_override = value;
591 
592 	mutex_lock(&priv->mutex);
593 	iwl_power_update_mode(priv, true);
594 	mutex_unlock(&priv->mutex);
595 
596 	return count;
597 }
598 
599 static ssize_t iwl_dbgfs_sleep_level_override_read(struct file *file,
600 						   char __user *user_buf,
601 						   size_t count, loff_t *ppos)
602 {
603 	struct iwl_priv *priv = file->private_data;
604 	char buf[10];
605 	int pos, value;
606 	const size_t bufsz = sizeof(buf);
607 
608 	/* see the write function */
609 	value = priv->power_data.debug_sleep_level_override;
610 	if (value >= 0)
611 		value += 1;
612 
613 	pos = scnprintf(buf, bufsz, "%d\n", value);
614 	return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
615 }
616 
617 static ssize_t iwl_dbgfs_current_sleep_command_read(struct file *file,
618 						    char __user *user_buf,
619 						    size_t count, loff_t *ppos)
620 {
621 	struct iwl_priv *priv = file->private_data;
622 	char buf[200];
623 	int pos = 0, i;
624 	const size_t bufsz = sizeof(buf);
625 	struct iwl_powertable_cmd *cmd = &priv->power_data.sleep_cmd;
626 
627 	pos += scnprintf(buf + pos, bufsz - pos,
628 			 "flags: %#.2x\n", le16_to_cpu(cmd->flags));
629 	pos += scnprintf(buf + pos, bufsz - pos,
630 			 "RX/TX timeout: %d/%d usec\n",
631 			 le32_to_cpu(cmd->rx_data_timeout),
632 			 le32_to_cpu(cmd->tx_data_timeout));
633 	for (i = 0; i < IWL_POWER_VEC_SIZE; i++)
634 		pos += scnprintf(buf + pos, bufsz - pos,
635 				 "sleep_interval[%d]: %d\n", i,
636 				 le32_to_cpu(cmd->sleep_interval[i]));
637 
638 	return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
639 }
640 
641 DEBUGFS_READ_WRITE_FILE_OPS(sram);
642 DEBUGFS_READ_FILE_OPS(wowlan_sram);
643 DEBUGFS_READ_FILE_OPS(nvm);
644 DEBUGFS_READ_FILE_OPS(stations);
645 DEBUGFS_READ_FILE_OPS(channels);
646 DEBUGFS_READ_FILE_OPS(status);
647 DEBUGFS_READ_WRITE_FILE_OPS(rx_handlers);
648 DEBUGFS_READ_FILE_OPS(qos);
649 DEBUGFS_READ_FILE_OPS(thermal_throttling);
650 DEBUGFS_READ_WRITE_FILE_OPS(disable_ht40);
651 DEBUGFS_READ_FILE_OPS(temperature);
652 DEBUGFS_READ_WRITE_FILE_OPS(sleep_level_override);
653 DEBUGFS_READ_FILE_OPS(current_sleep_command);
654 
655 #define fmt_value	"  %-30s %10u\n"
656 #define fmt_hex		"  %-30s       0x%02X\n"
657 #define fmt_table	"  %-30s %10u  %10u  %10u  %10u\n"
658 #define fmt_header	"%-32s    current  cumulative       delta         max\n"
659 
660 static int iwl_statistics_flag(struct iwl_priv *priv, char *buf, int bufsz)
661 {
662 	int p = 0;
663 	u32 flag;
664 
665 	lockdep_assert_held(&priv->statistics.lock);
666 
667 	flag = le32_to_cpu(priv->statistics.flag);
668 
669 	p += scnprintf(buf + p, bufsz - p, "Statistics Flag(0x%X):\n", flag);
670 	if (flag & UCODE_STATISTICS_CLEAR_MSK)
671 		p += scnprintf(buf + p, bufsz - p,
672 		"\tStatistics have been cleared\n");
673 	p += scnprintf(buf + p, bufsz - p, "\tOperational Frequency: %s\n",
674 		(flag & UCODE_STATISTICS_FREQUENCY_MSK)
675 		? "2.4 GHz" : "5.2 GHz");
676 	p += scnprintf(buf + p, bufsz - p, "\tTGj Narrow Band: %s\n",
677 		(flag & UCODE_STATISTICS_NARROW_BAND_MSK)
678 		 ? "enabled" : "disabled");
679 
680 	return p;
681 }
682 
683 static ssize_t iwl_dbgfs_ucode_rx_stats_read(struct file *file,
684 					char __user *user_buf,
685 					size_t count, loff_t *ppos)
686 {
687 	struct iwl_priv *priv = file->private_data;
688 	int pos = 0;
689 	char *buf;
690 	int bufsz = sizeof(struct statistics_rx_phy) * 40 +
691 		    sizeof(struct statistics_rx_non_phy) * 40 +
692 		    sizeof(struct statistics_rx_ht_phy) * 40 + 400;
693 	ssize_t ret;
694 	struct statistics_rx_phy *ofdm, *accum_ofdm, *delta_ofdm, *max_ofdm;
695 	struct statistics_rx_phy *cck, *accum_cck, *delta_cck, *max_cck;
696 	struct statistics_rx_non_phy *general, *accum_general;
697 	struct statistics_rx_non_phy *delta_general, *max_general;
698 	struct statistics_rx_ht_phy *ht, *accum_ht, *delta_ht, *max_ht;
699 
700 	if (!iwl_is_alive(priv))
701 		return -EAGAIN;
702 
703 	buf = kzalloc(bufsz, GFP_KERNEL);
704 	if (!buf)
705 		return -ENOMEM;
706 
707 	/*
708 	 * the statistic information display here is based on
709 	 * the last statistics notification from uCode
710 	 * might not reflect the current uCode activity
711 	 */
712 	spin_lock_bh(&priv->statistics.lock);
713 	ofdm = &priv->statistics.rx_ofdm;
714 	cck = &priv->statistics.rx_cck;
715 	general = &priv->statistics.rx_non_phy;
716 	ht = &priv->statistics.rx_ofdm_ht;
717 	accum_ofdm = &priv->accum_stats.rx_ofdm;
718 	accum_cck = &priv->accum_stats.rx_cck;
719 	accum_general = &priv->accum_stats.rx_non_phy;
720 	accum_ht = &priv->accum_stats.rx_ofdm_ht;
721 	delta_ofdm = &priv->delta_stats.rx_ofdm;
722 	delta_cck = &priv->delta_stats.rx_cck;
723 	delta_general = &priv->delta_stats.rx_non_phy;
724 	delta_ht = &priv->delta_stats.rx_ofdm_ht;
725 	max_ofdm = &priv->max_delta_stats.rx_ofdm;
726 	max_cck = &priv->max_delta_stats.rx_cck;
727 	max_general = &priv->max_delta_stats.rx_non_phy;
728 	max_ht = &priv->max_delta_stats.rx_ofdm_ht;
729 
730 	pos += iwl_statistics_flag(priv, buf, bufsz);
731 	pos += scnprintf(buf + pos, bufsz - pos,
732 			 fmt_header, "Statistics_Rx - OFDM:");
733 	pos += scnprintf(buf + pos, bufsz - pos,
734 			 fmt_table, "ina_cnt:",
735 			 le32_to_cpu(ofdm->ina_cnt),
736 			 accum_ofdm->ina_cnt,
737 			 delta_ofdm->ina_cnt, max_ofdm->ina_cnt);
738 	pos += scnprintf(buf + pos, bufsz - pos,
739 			 fmt_table, "fina_cnt:",
740 			 le32_to_cpu(ofdm->fina_cnt), accum_ofdm->fina_cnt,
741 			 delta_ofdm->fina_cnt, max_ofdm->fina_cnt);
742 	pos += scnprintf(buf + pos, bufsz - pos,
743 			 fmt_table, "plcp_err:",
744 			 le32_to_cpu(ofdm->plcp_err), accum_ofdm->plcp_err,
745 			 delta_ofdm->plcp_err, max_ofdm->plcp_err);
746 	pos += scnprintf(buf + pos, bufsz - pos,
747 			 fmt_table, "crc32_err:",
748 			 le32_to_cpu(ofdm->crc32_err), accum_ofdm->crc32_err,
749 			 delta_ofdm->crc32_err, max_ofdm->crc32_err);
750 	pos += scnprintf(buf + pos, bufsz - pos,
751 			 fmt_table, "overrun_err:",
752 			 le32_to_cpu(ofdm->overrun_err),
753 			 accum_ofdm->overrun_err, delta_ofdm->overrun_err,
754 			 max_ofdm->overrun_err);
755 	pos += scnprintf(buf + pos, bufsz - pos,
756 			 fmt_table, "early_overrun_err:",
757 			 le32_to_cpu(ofdm->early_overrun_err),
758 			 accum_ofdm->early_overrun_err,
759 			 delta_ofdm->early_overrun_err,
760 			 max_ofdm->early_overrun_err);
761 	pos += scnprintf(buf + pos, bufsz - pos,
762 			 fmt_table, "crc32_good:",
763 			 le32_to_cpu(ofdm->crc32_good),
764 			 accum_ofdm->crc32_good, delta_ofdm->crc32_good,
765 			 max_ofdm->crc32_good);
766 	pos += scnprintf(buf + pos, bufsz - pos,
767 			 fmt_table, "false_alarm_cnt:",
768 			 le32_to_cpu(ofdm->false_alarm_cnt),
769 			 accum_ofdm->false_alarm_cnt,
770 			 delta_ofdm->false_alarm_cnt,
771 			 max_ofdm->false_alarm_cnt);
772 	pos += scnprintf(buf + pos, bufsz - pos,
773 			 fmt_table, "fina_sync_err_cnt:",
774 			 le32_to_cpu(ofdm->fina_sync_err_cnt),
775 			 accum_ofdm->fina_sync_err_cnt,
776 			 delta_ofdm->fina_sync_err_cnt,
777 			 max_ofdm->fina_sync_err_cnt);
778 	pos += scnprintf(buf + pos, bufsz - pos,
779 			 fmt_table, "sfd_timeout:",
780 			 le32_to_cpu(ofdm->sfd_timeout),
781 			 accum_ofdm->sfd_timeout, delta_ofdm->sfd_timeout,
782 			 max_ofdm->sfd_timeout);
783 	pos += scnprintf(buf + pos, bufsz - pos,
784 			 fmt_table, "fina_timeout:",
785 			 le32_to_cpu(ofdm->fina_timeout),
786 			 accum_ofdm->fina_timeout, delta_ofdm->fina_timeout,
787 			 max_ofdm->fina_timeout);
788 	pos += scnprintf(buf + pos, bufsz - pos,
789 			 fmt_table, "unresponded_rts:",
790 			 le32_to_cpu(ofdm->unresponded_rts),
791 			 accum_ofdm->unresponded_rts,
792 			 delta_ofdm->unresponded_rts,
793 			 max_ofdm->unresponded_rts);
794 	pos += scnprintf(buf + pos, bufsz - pos,
795 			 fmt_table, "rxe_frame_lmt_ovrun:",
796 			 le32_to_cpu(ofdm->rxe_frame_limit_overrun),
797 			 accum_ofdm->rxe_frame_limit_overrun,
798 			 delta_ofdm->rxe_frame_limit_overrun,
799 			 max_ofdm->rxe_frame_limit_overrun);
800 	pos += scnprintf(buf + pos, bufsz - pos,
801 			 fmt_table, "sent_ack_cnt:",
802 			 le32_to_cpu(ofdm->sent_ack_cnt),
803 			 accum_ofdm->sent_ack_cnt, delta_ofdm->sent_ack_cnt,
804 			 max_ofdm->sent_ack_cnt);
805 	pos += scnprintf(buf + pos, bufsz - pos,
806 			 fmt_table, "sent_cts_cnt:",
807 			 le32_to_cpu(ofdm->sent_cts_cnt),
808 			 accum_ofdm->sent_cts_cnt, delta_ofdm->sent_cts_cnt,
809 			 max_ofdm->sent_cts_cnt);
810 	pos += scnprintf(buf + pos, bufsz - pos,
811 			 fmt_table, "sent_ba_rsp_cnt:",
812 			 le32_to_cpu(ofdm->sent_ba_rsp_cnt),
813 			 accum_ofdm->sent_ba_rsp_cnt,
814 			 delta_ofdm->sent_ba_rsp_cnt,
815 			 max_ofdm->sent_ba_rsp_cnt);
816 	pos += scnprintf(buf + pos, bufsz - pos,
817 			 fmt_table, "dsp_self_kill:",
818 			 le32_to_cpu(ofdm->dsp_self_kill),
819 			 accum_ofdm->dsp_self_kill,
820 			 delta_ofdm->dsp_self_kill,
821 			 max_ofdm->dsp_self_kill);
822 	pos += scnprintf(buf + pos, bufsz - pos,
823 			 fmt_table, "mh_format_err:",
824 			 le32_to_cpu(ofdm->mh_format_err),
825 			 accum_ofdm->mh_format_err,
826 			 delta_ofdm->mh_format_err,
827 			 max_ofdm->mh_format_err);
828 	pos += scnprintf(buf + pos, bufsz - pos,
829 			 fmt_table, "re_acq_main_rssi_sum:",
830 			 le32_to_cpu(ofdm->re_acq_main_rssi_sum),
831 			 accum_ofdm->re_acq_main_rssi_sum,
832 			 delta_ofdm->re_acq_main_rssi_sum,
833 			 max_ofdm->re_acq_main_rssi_sum);
834 
835 	pos += scnprintf(buf + pos, bufsz - pos,
836 			 fmt_header, "Statistics_Rx - CCK:");
837 	pos += scnprintf(buf + pos, bufsz - pos,
838 			 fmt_table, "ina_cnt:",
839 			 le32_to_cpu(cck->ina_cnt), accum_cck->ina_cnt,
840 			 delta_cck->ina_cnt, max_cck->ina_cnt);
841 	pos += scnprintf(buf + pos, bufsz - pos,
842 			 fmt_table, "fina_cnt:",
843 			 le32_to_cpu(cck->fina_cnt), accum_cck->fina_cnt,
844 			 delta_cck->fina_cnt, max_cck->fina_cnt);
845 	pos += scnprintf(buf + pos, bufsz - pos,
846 			 fmt_table, "plcp_err:",
847 			 le32_to_cpu(cck->plcp_err), accum_cck->plcp_err,
848 			 delta_cck->plcp_err, max_cck->plcp_err);
849 	pos += scnprintf(buf + pos, bufsz - pos,
850 			 fmt_table, "crc32_err:",
851 			 le32_to_cpu(cck->crc32_err), accum_cck->crc32_err,
852 			 delta_cck->crc32_err, max_cck->crc32_err);
853 	pos += scnprintf(buf + pos, bufsz - pos,
854 			 fmt_table, "overrun_err:",
855 			 le32_to_cpu(cck->overrun_err),
856 			 accum_cck->overrun_err, delta_cck->overrun_err,
857 			 max_cck->overrun_err);
858 	pos += scnprintf(buf + pos, bufsz - pos,
859 			 fmt_table, "early_overrun_err:",
860 			 le32_to_cpu(cck->early_overrun_err),
861 			 accum_cck->early_overrun_err,
862 			 delta_cck->early_overrun_err,
863 			 max_cck->early_overrun_err);
864 	pos += scnprintf(buf + pos, bufsz - pos,
865 			 fmt_table, "crc32_good:",
866 			 le32_to_cpu(cck->crc32_good), accum_cck->crc32_good,
867 			 delta_cck->crc32_good, max_cck->crc32_good);
868 	pos += scnprintf(buf + pos, bufsz - pos,
869 			 fmt_table, "false_alarm_cnt:",
870 			 le32_to_cpu(cck->false_alarm_cnt),
871 			 accum_cck->false_alarm_cnt,
872 			 delta_cck->false_alarm_cnt, max_cck->false_alarm_cnt);
873 	pos += scnprintf(buf + pos, bufsz - pos,
874 			 fmt_table, "fina_sync_err_cnt:",
875 			 le32_to_cpu(cck->fina_sync_err_cnt),
876 			 accum_cck->fina_sync_err_cnt,
877 			 delta_cck->fina_sync_err_cnt,
878 			 max_cck->fina_sync_err_cnt);
879 	pos += scnprintf(buf + pos, bufsz - pos,
880 			 fmt_table, "sfd_timeout:",
881 			 le32_to_cpu(cck->sfd_timeout),
882 			 accum_cck->sfd_timeout, delta_cck->sfd_timeout,
883 			 max_cck->sfd_timeout);
884 	pos += scnprintf(buf + pos, bufsz - pos,
885 			 fmt_table, "fina_timeout:",
886 			 le32_to_cpu(cck->fina_timeout),
887 			 accum_cck->fina_timeout, delta_cck->fina_timeout,
888 			 max_cck->fina_timeout);
889 	pos += scnprintf(buf + pos, bufsz - pos,
890 			 fmt_table, "unresponded_rts:",
891 			 le32_to_cpu(cck->unresponded_rts),
892 			 accum_cck->unresponded_rts, delta_cck->unresponded_rts,
893 			 max_cck->unresponded_rts);
894 	pos += scnprintf(buf + pos, bufsz - pos,
895 			 fmt_table, "rxe_frame_lmt_ovrun:",
896 			 le32_to_cpu(cck->rxe_frame_limit_overrun),
897 			 accum_cck->rxe_frame_limit_overrun,
898 			 delta_cck->rxe_frame_limit_overrun,
899 			 max_cck->rxe_frame_limit_overrun);
900 	pos += scnprintf(buf + pos, bufsz - pos,
901 			 fmt_table, "sent_ack_cnt:",
902 			 le32_to_cpu(cck->sent_ack_cnt),
903 			 accum_cck->sent_ack_cnt, delta_cck->sent_ack_cnt,
904 			 max_cck->sent_ack_cnt);
905 	pos += scnprintf(buf + pos, bufsz - pos,
906 			 fmt_table, "sent_cts_cnt:",
907 			 le32_to_cpu(cck->sent_cts_cnt),
908 			 accum_cck->sent_cts_cnt, delta_cck->sent_cts_cnt,
909 			 max_cck->sent_cts_cnt);
910 	pos += scnprintf(buf + pos, bufsz - pos,
911 			 fmt_table, "sent_ba_rsp_cnt:",
912 			 le32_to_cpu(cck->sent_ba_rsp_cnt),
913 			 accum_cck->sent_ba_rsp_cnt,
914 			 delta_cck->sent_ba_rsp_cnt,
915 			 max_cck->sent_ba_rsp_cnt);
916 	pos += scnprintf(buf + pos, bufsz - pos,
917 			 fmt_table, "dsp_self_kill:",
918 			 le32_to_cpu(cck->dsp_self_kill),
919 			 accum_cck->dsp_self_kill, delta_cck->dsp_self_kill,
920 			 max_cck->dsp_self_kill);
921 	pos += scnprintf(buf + pos, bufsz - pos,
922 			 fmt_table, "mh_format_err:",
923 			 le32_to_cpu(cck->mh_format_err),
924 			 accum_cck->mh_format_err, delta_cck->mh_format_err,
925 			 max_cck->mh_format_err);
926 	pos += scnprintf(buf + pos, bufsz - pos,
927 			 fmt_table, "re_acq_main_rssi_sum:",
928 			 le32_to_cpu(cck->re_acq_main_rssi_sum),
929 			 accum_cck->re_acq_main_rssi_sum,
930 			 delta_cck->re_acq_main_rssi_sum,
931 			 max_cck->re_acq_main_rssi_sum);
932 
933 	pos += scnprintf(buf + pos, bufsz - pos,
934 			 fmt_header, "Statistics_Rx - GENERAL:");
935 	pos += scnprintf(buf + pos, bufsz - pos,
936 			 fmt_table, "bogus_cts:",
937 			 le32_to_cpu(general->bogus_cts),
938 			 accum_general->bogus_cts, delta_general->bogus_cts,
939 			 max_general->bogus_cts);
940 	pos += scnprintf(buf + pos, bufsz - pos,
941 			 fmt_table, "bogus_ack:",
942 			 le32_to_cpu(general->bogus_ack),
943 			 accum_general->bogus_ack, delta_general->bogus_ack,
944 			 max_general->bogus_ack);
945 	pos += scnprintf(buf + pos, bufsz - pos,
946 			 fmt_table, "non_bssid_frames:",
947 			 le32_to_cpu(general->non_bssid_frames),
948 			 accum_general->non_bssid_frames,
949 			 delta_general->non_bssid_frames,
950 			 max_general->non_bssid_frames);
951 	pos += scnprintf(buf + pos, bufsz - pos,
952 			 fmt_table, "filtered_frames:",
953 			 le32_to_cpu(general->filtered_frames),
954 			 accum_general->filtered_frames,
955 			 delta_general->filtered_frames,
956 			 max_general->filtered_frames);
957 	pos += scnprintf(buf + pos, bufsz - pos,
958 			 fmt_table, "non_channel_beacons:",
959 			 le32_to_cpu(general->non_channel_beacons),
960 			 accum_general->non_channel_beacons,
961 			 delta_general->non_channel_beacons,
962 			 max_general->non_channel_beacons);
963 	pos += scnprintf(buf + pos, bufsz - pos,
964 			 fmt_table, "channel_beacons:",
965 			 le32_to_cpu(general->channel_beacons),
966 			 accum_general->channel_beacons,
967 			 delta_general->channel_beacons,
968 			 max_general->channel_beacons);
969 	pos += scnprintf(buf + pos, bufsz - pos,
970 			 fmt_table, "num_missed_bcon:",
971 			 le32_to_cpu(general->num_missed_bcon),
972 			 accum_general->num_missed_bcon,
973 			 delta_general->num_missed_bcon,
974 			 max_general->num_missed_bcon);
975 	pos += scnprintf(buf + pos, bufsz - pos,
976 			 fmt_table, "adc_rx_saturation_time:",
977 			 le32_to_cpu(general->adc_rx_saturation_time),
978 			 accum_general->adc_rx_saturation_time,
979 			 delta_general->adc_rx_saturation_time,
980 			 max_general->adc_rx_saturation_time);
981 	pos += scnprintf(buf + pos, bufsz - pos,
982 			 fmt_table, "ina_detect_search_tm:",
983 			 le32_to_cpu(general->ina_detection_search_time),
984 			 accum_general->ina_detection_search_time,
985 			 delta_general->ina_detection_search_time,
986 			 max_general->ina_detection_search_time);
987 	pos += scnprintf(buf + pos, bufsz - pos,
988 			 fmt_table, "beacon_silence_rssi_a:",
989 			 le32_to_cpu(general->beacon_silence_rssi_a),
990 			 accum_general->beacon_silence_rssi_a,
991 			 delta_general->beacon_silence_rssi_a,
992 			 max_general->beacon_silence_rssi_a);
993 	pos += scnprintf(buf + pos, bufsz - pos,
994 			 fmt_table, "beacon_silence_rssi_b:",
995 			 le32_to_cpu(general->beacon_silence_rssi_b),
996 			 accum_general->beacon_silence_rssi_b,
997 			 delta_general->beacon_silence_rssi_b,
998 			 max_general->beacon_silence_rssi_b);
999 	pos += scnprintf(buf + pos, bufsz - pos,
1000 			 fmt_table, "beacon_silence_rssi_c:",
1001 			 le32_to_cpu(general->beacon_silence_rssi_c),
1002 			 accum_general->beacon_silence_rssi_c,
1003 			 delta_general->beacon_silence_rssi_c,
1004 			 max_general->beacon_silence_rssi_c);
1005 	pos += scnprintf(buf + pos, bufsz - pos,
1006 			 fmt_table, "interference_data_flag:",
1007 			 le32_to_cpu(general->interference_data_flag),
1008 			 accum_general->interference_data_flag,
1009 			 delta_general->interference_data_flag,
1010 			 max_general->interference_data_flag);
1011 	pos += scnprintf(buf + pos, bufsz - pos,
1012 			 fmt_table, "channel_load:",
1013 			 le32_to_cpu(general->channel_load),
1014 			 accum_general->channel_load,
1015 			 delta_general->channel_load,
1016 			 max_general->channel_load);
1017 	pos += scnprintf(buf + pos, bufsz - pos,
1018 			 fmt_table, "dsp_false_alarms:",
1019 			 le32_to_cpu(general->dsp_false_alarms),
1020 			 accum_general->dsp_false_alarms,
1021 			 delta_general->dsp_false_alarms,
1022 			 max_general->dsp_false_alarms);
1023 	pos += scnprintf(buf + pos, bufsz - pos,
1024 			 fmt_table, "beacon_rssi_a:",
1025 			 le32_to_cpu(general->beacon_rssi_a),
1026 			 accum_general->beacon_rssi_a,
1027 			 delta_general->beacon_rssi_a,
1028 			 max_general->beacon_rssi_a);
1029 	pos += scnprintf(buf + pos, bufsz - pos,
1030 			 fmt_table, "beacon_rssi_b:",
1031 			 le32_to_cpu(general->beacon_rssi_b),
1032 			 accum_general->beacon_rssi_b,
1033 			 delta_general->beacon_rssi_b,
1034 			 max_general->beacon_rssi_b);
1035 	pos += scnprintf(buf + pos, bufsz - pos,
1036 			 fmt_table, "beacon_rssi_c:",
1037 			 le32_to_cpu(general->beacon_rssi_c),
1038 			 accum_general->beacon_rssi_c,
1039 			 delta_general->beacon_rssi_c,
1040 			 max_general->beacon_rssi_c);
1041 	pos += scnprintf(buf + pos, bufsz - pos,
1042 			 fmt_table, "beacon_energy_a:",
1043 			 le32_to_cpu(general->beacon_energy_a),
1044 			 accum_general->beacon_energy_a,
1045 			 delta_general->beacon_energy_a,
1046 			 max_general->beacon_energy_a);
1047 	pos += scnprintf(buf + pos, bufsz - pos,
1048 			 fmt_table, "beacon_energy_b:",
1049 			 le32_to_cpu(general->beacon_energy_b),
1050 			 accum_general->beacon_energy_b,
1051 			 delta_general->beacon_energy_b,
1052 			 max_general->beacon_energy_b);
1053 	pos += scnprintf(buf + pos, bufsz - pos,
1054 			 fmt_table, "beacon_energy_c:",
1055 			 le32_to_cpu(general->beacon_energy_c),
1056 			 accum_general->beacon_energy_c,
1057 			 delta_general->beacon_energy_c,
1058 			 max_general->beacon_energy_c);
1059 
1060 	pos += scnprintf(buf + pos, bufsz - pos,
1061 			 fmt_header, "Statistics_Rx - OFDM_HT:");
1062 	pos += scnprintf(buf + pos, bufsz - pos,
1063 			 fmt_table, "plcp_err:",
1064 			 le32_to_cpu(ht->plcp_err), accum_ht->plcp_err,
1065 			 delta_ht->plcp_err, max_ht->plcp_err);
1066 	pos += scnprintf(buf + pos, bufsz - pos,
1067 			 fmt_table, "overrun_err:",
1068 			 le32_to_cpu(ht->overrun_err), accum_ht->overrun_err,
1069 			 delta_ht->overrun_err, max_ht->overrun_err);
1070 	pos += scnprintf(buf + pos, bufsz - pos,
1071 			 fmt_table, "early_overrun_err:",
1072 			 le32_to_cpu(ht->early_overrun_err),
1073 			 accum_ht->early_overrun_err,
1074 			 delta_ht->early_overrun_err,
1075 			 max_ht->early_overrun_err);
1076 	pos += scnprintf(buf + pos, bufsz - pos,
1077 			 fmt_table, "crc32_good:",
1078 			 le32_to_cpu(ht->crc32_good), accum_ht->crc32_good,
1079 			 delta_ht->crc32_good, max_ht->crc32_good);
1080 	pos += scnprintf(buf + pos, bufsz - pos,
1081 			 fmt_table, "crc32_err:",
1082 			 le32_to_cpu(ht->crc32_err), accum_ht->crc32_err,
1083 			 delta_ht->crc32_err, max_ht->crc32_err);
1084 	pos += scnprintf(buf + pos, bufsz - pos,
1085 			 fmt_table, "mh_format_err:",
1086 			 le32_to_cpu(ht->mh_format_err),
1087 			 accum_ht->mh_format_err,
1088 			 delta_ht->mh_format_err, max_ht->mh_format_err);
1089 	pos += scnprintf(buf + pos, bufsz - pos,
1090 			 fmt_table, "agg_crc32_good:",
1091 			 le32_to_cpu(ht->agg_crc32_good),
1092 			 accum_ht->agg_crc32_good,
1093 			 delta_ht->agg_crc32_good, max_ht->agg_crc32_good);
1094 	pos += scnprintf(buf + pos, bufsz - pos,
1095 			 fmt_table, "agg_mpdu_cnt:",
1096 			 le32_to_cpu(ht->agg_mpdu_cnt),
1097 			 accum_ht->agg_mpdu_cnt,
1098 			 delta_ht->agg_mpdu_cnt, max_ht->agg_mpdu_cnt);
1099 	pos += scnprintf(buf + pos, bufsz - pos,
1100 			 fmt_table, "agg_cnt:",
1101 			 le32_to_cpu(ht->agg_cnt), accum_ht->agg_cnt,
1102 			 delta_ht->agg_cnt, max_ht->agg_cnt);
1103 	pos += scnprintf(buf + pos, bufsz - pos,
1104 			 fmt_table, "unsupport_mcs:",
1105 			 le32_to_cpu(ht->unsupport_mcs),
1106 			 accum_ht->unsupport_mcs,
1107 			 delta_ht->unsupport_mcs, max_ht->unsupport_mcs);
1108 
1109 	spin_unlock_bh(&priv->statistics.lock);
1110 
1111 	ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
1112 	kfree(buf);
1113 	return ret;
1114 }
1115 
1116 static ssize_t iwl_dbgfs_ucode_tx_stats_read(struct file *file,
1117 					char __user *user_buf,
1118 					size_t count, loff_t *ppos)
1119 {
1120 	struct iwl_priv *priv = file->private_data;
1121 	int pos = 0;
1122 	char *buf;
1123 	int bufsz = (sizeof(struct statistics_tx) * 48) + 250;
1124 	ssize_t ret;
1125 	struct statistics_tx *tx, *accum_tx, *delta_tx, *max_tx;
1126 
1127 	if (!iwl_is_alive(priv))
1128 		return -EAGAIN;
1129 
1130 	buf = kzalloc(bufsz, GFP_KERNEL);
1131 	if (!buf)
1132 		return -ENOMEM;
1133 
1134 	/* the statistic information display here is based on
1135 	 * the last statistics notification from uCode
1136 	 * might not reflect the current uCode activity
1137 	 */
1138 	spin_lock_bh(&priv->statistics.lock);
1139 
1140 	tx = &priv->statistics.tx;
1141 	accum_tx = &priv->accum_stats.tx;
1142 	delta_tx = &priv->delta_stats.tx;
1143 	max_tx = &priv->max_delta_stats.tx;
1144 
1145 	pos += iwl_statistics_flag(priv, buf, bufsz);
1146 	pos += scnprintf(buf + pos, bufsz - pos,
1147 			 fmt_header, "Statistics_Tx:");
1148 	pos += scnprintf(buf + pos, bufsz - pos,
1149 			 fmt_table, "preamble:",
1150 			 le32_to_cpu(tx->preamble_cnt),
1151 			 accum_tx->preamble_cnt,
1152 			 delta_tx->preamble_cnt, max_tx->preamble_cnt);
1153 	pos += scnprintf(buf + pos, bufsz - pos,
1154 			 fmt_table, "rx_detected_cnt:",
1155 			 le32_to_cpu(tx->rx_detected_cnt),
1156 			 accum_tx->rx_detected_cnt,
1157 			 delta_tx->rx_detected_cnt, max_tx->rx_detected_cnt);
1158 	pos += scnprintf(buf + pos, bufsz - pos,
1159 			 fmt_table, "bt_prio_defer_cnt:",
1160 			 le32_to_cpu(tx->bt_prio_defer_cnt),
1161 			 accum_tx->bt_prio_defer_cnt,
1162 			 delta_tx->bt_prio_defer_cnt,
1163 			 max_tx->bt_prio_defer_cnt);
1164 	pos += scnprintf(buf + pos, bufsz - pos,
1165 			 fmt_table, "bt_prio_kill_cnt:",
1166 			 le32_to_cpu(tx->bt_prio_kill_cnt),
1167 			 accum_tx->bt_prio_kill_cnt,
1168 			 delta_tx->bt_prio_kill_cnt,
1169 			 max_tx->bt_prio_kill_cnt);
1170 	pos += scnprintf(buf + pos, bufsz - pos,
1171 			 fmt_table, "few_bytes_cnt:",
1172 			 le32_to_cpu(tx->few_bytes_cnt),
1173 			 accum_tx->few_bytes_cnt,
1174 			 delta_tx->few_bytes_cnt, max_tx->few_bytes_cnt);
1175 	pos += scnprintf(buf + pos, bufsz - pos,
1176 			 fmt_table, "cts_timeout:",
1177 			 le32_to_cpu(tx->cts_timeout), accum_tx->cts_timeout,
1178 			 delta_tx->cts_timeout, max_tx->cts_timeout);
1179 	pos += scnprintf(buf + pos, bufsz - pos,
1180 			 fmt_table, "ack_timeout:",
1181 			 le32_to_cpu(tx->ack_timeout),
1182 			 accum_tx->ack_timeout,
1183 			 delta_tx->ack_timeout, max_tx->ack_timeout);
1184 	pos += scnprintf(buf + pos, bufsz - pos,
1185 			 fmt_table, "expected_ack_cnt:",
1186 			 le32_to_cpu(tx->expected_ack_cnt),
1187 			 accum_tx->expected_ack_cnt,
1188 			 delta_tx->expected_ack_cnt,
1189 			 max_tx->expected_ack_cnt);
1190 	pos += scnprintf(buf + pos, bufsz - pos,
1191 			 fmt_table, "actual_ack_cnt:",
1192 			 le32_to_cpu(tx->actual_ack_cnt),
1193 			 accum_tx->actual_ack_cnt,
1194 			 delta_tx->actual_ack_cnt,
1195 			 max_tx->actual_ack_cnt);
1196 	pos += scnprintf(buf + pos, bufsz - pos,
1197 			 fmt_table, "dump_msdu_cnt:",
1198 			 le32_to_cpu(tx->dump_msdu_cnt),
1199 			 accum_tx->dump_msdu_cnt,
1200 			 delta_tx->dump_msdu_cnt,
1201 			 max_tx->dump_msdu_cnt);
1202 	pos += scnprintf(buf + pos, bufsz - pos,
1203 			 fmt_table, "abort_nxt_frame_mismatch:",
1204 			 le32_to_cpu(tx->burst_abort_next_frame_mismatch_cnt),
1205 			 accum_tx->burst_abort_next_frame_mismatch_cnt,
1206 			 delta_tx->burst_abort_next_frame_mismatch_cnt,
1207 			 max_tx->burst_abort_next_frame_mismatch_cnt);
1208 	pos += scnprintf(buf + pos, bufsz - pos,
1209 			 fmt_table, "abort_missing_nxt_frame:",
1210 			 le32_to_cpu(tx->burst_abort_missing_next_frame_cnt),
1211 			 accum_tx->burst_abort_missing_next_frame_cnt,
1212 			 delta_tx->burst_abort_missing_next_frame_cnt,
1213 			 max_tx->burst_abort_missing_next_frame_cnt);
1214 	pos += scnprintf(buf + pos, bufsz - pos,
1215 			 fmt_table, "cts_timeout_collision:",
1216 			 le32_to_cpu(tx->cts_timeout_collision),
1217 			 accum_tx->cts_timeout_collision,
1218 			 delta_tx->cts_timeout_collision,
1219 			 max_tx->cts_timeout_collision);
1220 	pos += scnprintf(buf + pos, bufsz - pos,
1221 			 fmt_table, "ack_ba_timeout_collision:",
1222 			 le32_to_cpu(tx->ack_or_ba_timeout_collision),
1223 			 accum_tx->ack_or_ba_timeout_collision,
1224 			 delta_tx->ack_or_ba_timeout_collision,
1225 			 max_tx->ack_or_ba_timeout_collision);
1226 	pos += scnprintf(buf + pos, bufsz - pos,
1227 			 fmt_table, "agg ba_timeout:",
1228 			 le32_to_cpu(tx->agg.ba_timeout),
1229 			 accum_tx->agg.ba_timeout,
1230 			 delta_tx->agg.ba_timeout,
1231 			 max_tx->agg.ba_timeout);
1232 	pos += scnprintf(buf + pos, bufsz - pos,
1233 			 fmt_table, "agg ba_resched_frames:",
1234 			 le32_to_cpu(tx->agg.ba_reschedule_frames),
1235 			 accum_tx->agg.ba_reschedule_frames,
1236 			 delta_tx->agg.ba_reschedule_frames,
1237 			 max_tx->agg.ba_reschedule_frames);
1238 	pos += scnprintf(buf + pos, bufsz - pos,
1239 			 fmt_table, "agg scd_query_agg_frame:",
1240 			 le32_to_cpu(tx->agg.scd_query_agg_frame_cnt),
1241 			 accum_tx->agg.scd_query_agg_frame_cnt,
1242 			 delta_tx->agg.scd_query_agg_frame_cnt,
1243 			 max_tx->agg.scd_query_agg_frame_cnt);
1244 	pos += scnprintf(buf + pos, bufsz - pos,
1245 			 fmt_table, "agg scd_query_no_agg:",
1246 			 le32_to_cpu(tx->agg.scd_query_no_agg),
1247 			 accum_tx->agg.scd_query_no_agg,
1248 			 delta_tx->agg.scd_query_no_agg,
1249 			 max_tx->agg.scd_query_no_agg);
1250 	pos += scnprintf(buf + pos, bufsz - pos,
1251 			 fmt_table, "agg scd_query_agg:",
1252 			 le32_to_cpu(tx->agg.scd_query_agg),
1253 			 accum_tx->agg.scd_query_agg,
1254 			 delta_tx->agg.scd_query_agg,
1255 			 max_tx->agg.scd_query_agg);
1256 	pos += scnprintf(buf + pos, bufsz - pos,
1257 			 fmt_table, "agg scd_query_mismatch:",
1258 			 le32_to_cpu(tx->agg.scd_query_mismatch),
1259 			 accum_tx->agg.scd_query_mismatch,
1260 			 delta_tx->agg.scd_query_mismatch,
1261 			 max_tx->agg.scd_query_mismatch);
1262 	pos += scnprintf(buf + pos, bufsz - pos,
1263 			 fmt_table, "agg frame_not_ready:",
1264 			 le32_to_cpu(tx->agg.frame_not_ready),
1265 			 accum_tx->agg.frame_not_ready,
1266 			 delta_tx->agg.frame_not_ready,
1267 			 max_tx->agg.frame_not_ready);
1268 	pos += scnprintf(buf + pos, bufsz - pos,
1269 			 fmt_table, "agg underrun:",
1270 			 le32_to_cpu(tx->agg.underrun),
1271 			 accum_tx->agg.underrun,
1272 			 delta_tx->agg.underrun, max_tx->agg.underrun);
1273 	pos += scnprintf(buf + pos, bufsz - pos,
1274 			 fmt_table, "agg bt_prio_kill:",
1275 			 le32_to_cpu(tx->agg.bt_prio_kill),
1276 			 accum_tx->agg.bt_prio_kill,
1277 			 delta_tx->agg.bt_prio_kill,
1278 			 max_tx->agg.bt_prio_kill);
1279 	pos += scnprintf(buf + pos, bufsz - pos,
1280 			 fmt_table, "agg rx_ba_rsp_cnt:",
1281 			 le32_to_cpu(tx->agg.rx_ba_rsp_cnt),
1282 			 accum_tx->agg.rx_ba_rsp_cnt,
1283 			 delta_tx->agg.rx_ba_rsp_cnt,
1284 			 max_tx->agg.rx_ba_rsp_cnt);
1285 
1286 	if (tx->tx_power.ant_a || tx->tx_power.ant_b || tx->tx_power.ant_c) {
1287 		pos += scnprintf(buf + pos, bufsz - pos,
1288 			"tx power: (1/2 dB step)\n");
1289 		if ((priv->nvm_data->valid_tx_ant & ANT_A) &&
1290 		    tx->tx_power.ant_a)
1291 			pos += scnprintf(buf + pos, bufsz - pos,
1292 					fmt_hex, "antenna A:",
1293 					tx->tx_power.ant_a);
1294 		if ((priv->nvm_data->valid_tx_ant & ANT_B) &&
1295 		    tx->tx_power.ant_b)
1296 			pos += scnprintf(buf + pos, bufsz - pos,
1297 					fmt_hex, "antenna B:",
1298 					tx->tx_power.ant_b);
1299 		if ((priv->nvm_data->valid_tx_ant & ANT_C) &&
1300 		    tx->tx_power.ant_c)
1301 			pos += scnprintf(buf + pos, bufsz - pos,
1302 					fmt_hex, "antenna C:",
1303 					tx->tx_power.ant_c);
1304 	}
1305 
1306 	spin_unlock_bh(&priv->statistics.lock);
1307 
1308 	ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
1309 	kfree(buf);
1310 	return ret;
1311 }
1312 
1313 static ssize_t iwl_dbgfs_ucode_general_stats_read(struct file *file,
1314 					char __user *user_buf,
1315 					size_t count, loff_t *ppos)
1316 {
1317 	struct iwl_priv *priv = file->private_data;
1318 	int pos = 0;
1319 	char *buf;
1320 	int bufsz = sizeof(struct statistics_general) * 10 + 300;
1321 	ssize_t ret;
1322 	struct statistics_general_common *general, *accum_general;
1323 	struct statistics_general_common *delta_general, *max_general;
1324 	struct statistics_dbg *dbg, *accum_dbg, *delta_dbg, *max_dbg;
1325 	struct statistics_div *div, *accum_div, *delta_div, *max_div;
1326 
1327 	if (!iwl_is_alive(priv))
1328 		return -EAGAIN;
1329 
1330 	buf = kzalloc(bufsz, GFP_KERNEL);
1331 	if (!buf)
1332 		return -ENOMEM;
1333 
1334 	/* the statistic information display here is based on
1335 	 * the last statistics notification from uCode
1336 	 * might not reflect the current uCode activity
1337 	 */
1338 
1339 	spin_lock_bh(&priv->statistics.lock);
1340 
1341 	general = &priv->statistics.common;
1342 	dbg = &priv->statistics.common.dbg;
1343 	div = &priv->statistics.common.div;
1344 	accum_general = &priv->accum_stats.common;
1345 	accum_dbg = &priv->accum_stats.common.dbg;
1346 	accum_div = &priv->accum_stats.common.div;
1347 	delta_general = &priv->delta_stats.common;
1348 	max_general = &priv->max_delta_stats.common;
1349 	delta_dbg = &priv->delta_stats.common.dbg;
1350 	max_dbg = &priv->max_delta_stats.common.dbg;
1351 	delta_div = &priv->delta_stats.common.div;
1352 	max_div = &priv->max_delta_stats.common.div;
1353 
1354 	pos += iwl_statistics_flag(priv, buf, bufsz);
1355 	pos += scnprintf(buf + pos, bufsz - pos,
1356 			 fmt_header, "Statistics_General:");
1357 	pos += scnprintf(buf + pos, bufsz - pos,
1358 			 fmt_value, "temperature:",
1359 			 le32_to_cpu(general->temperature));
1360 	pos += scnprintf(buf + pos, bufsz - pos,
1361 			 fmt_value, "temperature_m:",
1362 			 le32_to_cpu(general->temperature_m));
1363 	pos += scnprintf(buf + pos, bufsz - pos,
1364 			 fmt_value, "ttl_timestamp:",
1365 			 le32_to_cpu(general->ttl_timestamp));
1366 	pos += scnprintf(buf + pos, bufsz - pos,
1367 			 fmt_table, "burst_check:",
1368 			 le32_to_cpu(dbg->burst_check),
1369 			 accum_dbg->burst_check,
1370 			 delta_dbg->burst_check, max_dbg->burst_check);
1371 	pos += scnprintf(buf + pos, bufsz - pos,
1372 			 fmt_table, "burst_count:",
1373 			 le32_to_cpu(dbg->burst_count),
1374 			 accum_dbg->burst_count,
1375 			 delta_dbg->burst_count, max_dbg->burst_count);
1376 	pos += scnprintf(buf + pos, bufsz - pos,
1377 			 fmt_table, "wait_for_silence_timeout_count:",
1378 			 le32_to_cpu(dbg->wait_for_silence_timeout_cnt),
1379 			 accum_dbg->wait_for_silence_timeout_cnt,
1380 			 delta_dbg->wait_for_silence_timeout_cnt,
1381 			 max_dbg->wait_for_silence_timeout_cnt);
1382 	pos += scnprintf(buf + pos, bufsz - pos,
1383 			 fmt_table, "sleep_time:",
1384 			 le32_to_cpu(general->sleep_time),
1385 			 accum_general->sleep_time,
1386 			 delta_general->sleep_time, max_general->sleep_time);
1387 	pos += scnprintf(buf + pos, bufsz - pos,
1388 			 fmt_table, "slots_out:",
1389 			 le32_to_cpu(general->slots_out),
1390 			 accum_general->slots_out,
1391 			 delta_general->slots_out, max_general->slots_out);
1392 	pos += scnprintf(buf + pos, bufsz - pos,
1393 			 fmt_table, "slots_idle:",
1394 			 le32_to_cpu(general->slots_idle),
1395 			 accum_general->slots_idle,
1396 			 delta_general->slots_idle, max_general->slots_idle);
1397 	pos += scnprintf(buf + pos, bufsz - pos,
1398 			 fmt_table, "tx_on_a:",
1399 			 le32_to_cpu(div->tx_on_a), accum_div->tx_on_a,
1400 			 delta_div->tx_on_a, max_div->tx_on_a);
1401 	pos += scnprintf(buf + pos, bufsz - pos,
1402 			 fmt_table, "tx_on_b:",
1403 			 le32_to_cpu(div->tx_on_b), accum_div->tx_on_b,
1404 			 delta_div->tx_on_b, max_div->tx_on_b);
1405 	pos += scnprintf(buf + pos, bufsz - pos,
1406 			 fmt_table, "exec_time:",
1407 			 le32_to_cpu(div->exec_time), accum_div->exec_time,
1408 			 delta_div->exec_time, max_div->exec_time);
1409 	pos += scnprintf(buf + pos, bufsz - pos,
1410 			 fmt_table, "probe_time:",
1411 			 le32_to_cpu(div->probe_time), accum_div->probe_time,
1412 			 delta_div->probe_time, max_div->probe_time);
1413 	pos += scnprintf(buf + pos, bufsz - pos,
1414 			 fmt_table, "rx_enable_counter:",
1415 			 le32_to_cpu(general->rx_enable_counter),
1416 			 accum_general->rx_enable_counter,
1417 			 delta_general->rx_enable_counter,
1418 			 max_general->rx_enable_counter);
1419 	pos += scnprintf(buf + pos, bufsz - pos,
1420 			 fmt_table, "num_of_sos_states:",
1421 			 le32_to_cpu(general->num_of_sos_states),
1422 			 accum_general->num_of_sos_states,
1423 			 delta_general->num_of_sos_states,
1424 			 max_general->num_of_sos_states);
1425 
1426 	spin_unlock_bh(&priv->statistics.lock);
1427 
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_ucode_bt_stats_read(struct file *file,
1434 					char __user *user_buf,
1435 					size_t count, loff_t *ppos)
1436 {
1437 	struct iwl_priv *priv = (struct iwl_priv *)file->private_data;
1438 	int pos = 0;
1439 	char *buf;
1440 	int bufsz = (sizeof(struct statistics_bt_activity) * 24) + 200;
1441 	ssize_t ret;
1442 	struct statistics_bt_activity *bt, *accum_bt;
1443 
1444 	if (!iwl_is_alive(priv))
1445 		return -EAGAIN;
1446 
1447 	if (!priv->bt_enable_flag)
1448 		return -EINVAL;
1449 
1450 	/* make request to uCode to retrieve statistics information */
1451 	mutex_lock(&priv->mutex);
1452 	ret = iwl_send_statistics_request(priv, 0, false);
1453 	mutex_unlock(&priv->mutex);
1454 
1455 	if (ret)
1456 		return -EAGAIN;
1457 	buf = kzalloc(bufsz, GFP_KERNEL);
1458 	if (!buf)
1459 		return -ENOMEM;
1460 
1461 	/*
1462 	 * the statistic information display here is based on
1463 	 * the last statistics notification from uCode
1464 	 * might not reflect the current uCode activity
1465 	 */
1466 
1467 	spin_lock_bh(&priv->statistics.lock);
1468 
1469 	bt = &priv->statistics.bt_activity;
1470 	accum_bt = &priv->accum_stats.bt_activity;
1471 
1472 	pos += iwl_statistics_flag(priv, buf, bufsz);
1473 	pos += scnprintf(buf + pos, bufsz - pos, "Statistics_BT:\n");
1474 	pos += scnprintf(buf + pos, bufsz - pos,
1475 			"\t\t\tcurrent\t\t\taccumulative\n");
1476 	pos += scnprintf(buf + pos, bufsz - pos,
1477 			 "hi_priority_tx_req_cnt:\t\t%u\t\t\t%u\n",
1478 			 le32_to_cpu(bt->hi_priority_tx_req_cnt),
1479 			 accum_bt->hi_priority_tx_req_cnt);
1480 	pos += scnprintf(buf + pos, bufsz - pos,
1481 			 "hi_priority_tx_denied_cnt:\t%u\t\t\t%u\n",
1482 			 le32_to_cpu(bt->hi_priority_tx_denied_cnt),
1483 			 accum_bt->hi_priority_tx_denied_cnt);
1484 	pos += scnprintf(buf + pos, bufsz - pos,
1485 			 "lo_priority_tx_req_cnt:\t\t%u\t\t\t%u\n",
1486 			 le32_to_cpu(bt->lo_priority_tx_req_cnt),
1487 			 accum_bt->lo_priority_tx_req_cnt);
1488 	pos += scnprintf(buf + pos, bufsz - pos,
1489 			 "lo_priority_tx_denied_cnt:\t%u\t\t\t%u\n",
1490 			 le32_to_cpu(bt->lo_priority_tx_denied_cnt),
1491 			 accum_bt->lo_priority_tx_denied_cnt);
1492 	pos += scnprintf(buf + pos, bufsz - pos,
1493 			 "hi_priority_rx_req_cnt:\t\t%u\t\t\t%u\n",
1494 			 le32_to_cpu(bt->hi_priority_rx_req_cnt),
1495 			 accum_bt->hi_priority_rx_req_cnt);
1496 	pos += scnprintf(buf + pos, bufsz - pos,
1497 			 "hi_priority_rx_denied_cnt:\t%u\t\t\t%u\n",
1498 			 le32_to_cpu(bt->hi_priority_rx_denied_cnt),
1499 			 accum_bt->hi_priority_rx_denied_cnt);
1500 	pos += scnprintf(buf + pos, bufsz - pos,
1501 			 "lo_priority_rx_req_cnt:\t\t%u\t\t\t%u\n",
1502 			 le32_to_cpu(bt->lo_priority_rx_req_cnt),
1503 			 accum_bt->lo_priority_rx_req_cnt);
1504 	pos += scnprintf(buf + pos, bufsz - pos,
1505 			 "lo_priority_rx_denied_cnt:\t%u\t\t\t%u\n",
1506 			 le32_to_cpu(bt->lo_priority_rx_denied_cnt),
1507 			 accum_bt->lo_priority_rx_denied_cnt);
1508 
1509 	pos += scnprintf(buf + pos, bufsz - pos,
1510 			 "(rx)num_bt_kills:\t\t%u\t\t\t%u\n",
1511 			 le32_to_cpu(priv->statistics.num_bt_kills),
1512 			 priv->statistics.accum_num_bt_kills);
1513 
1514 	spin_unlock_bh(&priv->statistics.lock);
1515 
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_reply_tx_error_read(struct file *file,
1522 					char __user *user_buf,
1523 					size_t count, loff_t *ppos)
1524 {
1525 	struct iwl_priv *priv = (struct iwl_priv *)file->private_data;
1526 	int pos = 0;
1527 	char *buf;
1528 	int bufsz = (sizeof(struct reply_tx_error_statistics) * 24) +
1529 		(sizeof(struct reply_agg_tx_error_statistics) * 24) + 200;
1530 	ssize_t ret;
1531 
1532 	if (!iwl_is_alive(priv))
1533 		return -EAGAIN;
1534 
1535 	buf = kzalloc(bufsz, GFP_KERNEL);
1536 	if (!buf)
1537 		return -ENOMEM;
1538 
1539 	pos += scnprintf(buf + pos, bufsz - pos, "Statistics_TX_Error:\n");
1540 	pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t\t%u\n",
1541 			 iwl_get_tx_fail_reason(TX_STATUS_POSTPONE_DELAY),
1542 			 priv->reply_tx_stats.pp_delay);
1543 	pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
1544 			 iwl_get_tx_fail_reason(TX_STATUS_POSTPONE_FEW_BYTES),
1545 			 priv->reply_tx_stats.pp_few_bytes);
1546 	pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
1547 			 iwl_get_tx_fail_reason(TX_STATUS_POSTPONE_BT_PRIO),
1548 			 priv->reply_tx_stats.pp_bt_prio);
1549 	pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
1550 			 iwl_get_tx_fail_reason(TX_STATUS_POSTPONE_QUIET_PERIOD),
1551 			 priv->reply_tx_stats.pp_quiet_period);
1552 	pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
1553 			 iwl_get_tx_fail_reason(TX_STATUS_POSTPONE_CALC_TTAK),
1554 			 priv->reply_tx_stats.pp_calc_ttak);
1555 	pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t%u\n",
1556 			 iwl_get_tx_fail_reason(
1557 				TX_STATUS_FAIL_INTERNAL_CROSSED_RETRY),
1558 			 priv->reply_tx_stats.int_crossed_retry);
1559 	pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
1560 			 iwl_get_tx_fail_reason(TX_STATUS_FAIL_SHORT_LIMIT),
1561 			 priv->reply_tx_stats.short_limit);
1562 	pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
1563 			 iwl_get_tx_fail_reason(TX_STATUS_FAIL_LONG_LIMIT),
1564 			 priv->reply_tx_stats.long_limit);
1565 	pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
1566 			 iwl_get_tx_fail_reason(TX_STATUS_FAIL_FIFO_UNDERRUN),
1567 			 priv->reply_tx_stats.fifo_underrun);
1568 	pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
1569 			 iwl_get_tx_fail_reason(TX_STATUS_FAIL_DRAIN_FLOW),
1570 			 priv->reply_tx_stats.drain_flow);
1571 	pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
1572 			 iwl_get_tx_fail_reason(TX_STATUS_FAIL_RFKILL_FLUSH),
1573 			 priv->reply_tx_stats.rfkill_flush);
1574 	pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
1575 			 iwl_get_tx_fail_reason(TX_STATUS_FAIL_LIFE_EXPIRE),
1576 			 priv->reply_tx_stats.life_expire);
1577 	pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
1578 			 iwl_get_tx_fail_reason(TX_STATUS_FAIL_DEST_PS),
1579 			 priv->reply_tx_stats.dest_ps);
1580 	pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
1581 			 iwl_get_tx_fail_reason(TX_STATUS_FAIL_HOST_ABORTED),
1582 			 priv->reply_tx_stats.host_abort);
1583 	pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
1584 			 iwl_get_tx_fail_reason(TX_STATUS_FAIL_BT_RETRY),
1585 			 priv->reply_tx_stats.pp_delay);
1586 	pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
1587 			 iwl_get_tx_fail_reason(TX_STATUS_FAIL_STA_INVALID),
1588 			 priv->reply_tx_stats.sta_invalid);
1589 	pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
1590 			 iwl_get_tx_fail_reason(TX_STATUS_FAIL_FRAG_DROPPED),
1591 			 priv->reply_tx_stats.frag_drop);
1592 	pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
1593 			 iwl_get_tx_fail_reason(TX_STATUS_FAIL_TID_DISABLE),
1594 			 priv->reply_tx_stats.tid_disable);
1595 	pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
1596 			 iwl_get_tx_fail_reason(TX_STATUS_FAIL_FIFO_FLUSHED),
1597 			 priv->reply_tx_stats.fifo_flush);
1598 	pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t%u\n",
1599 			 iwl_get_tx_fail_reason(
1600 				TX_STATUS_FAIL_INSUFFICIENT_CF_POLL),
1601 			 priv->reply_tx_stats.insuff_cf_poll);
1602 	pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
1603 			 iwl_get_tx_fail_reason(TX_STATUS_FAIL_PASSIVE_NO_RX),
1604 			 priv->reply_tx_stats.fail_hw_drop);
1605 	pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t%u\n",
1606 			 iwl_get_tx_fail_reason(
1607 				TX_STATUS_FAIL_NO_BEACON_ON_RADAR),
1608 			 priv->reply_tx_stats.sta_color_mismatch);
1609 	pos += scnprintf(buf + pos, bufsz - pos, "UNKNOWN:\t\t\t%u\n",
1610 			 priv->reply_tx_stats.unknown);
1611 
1612 	pos += scnprintf(buf + pos, bufsz - pos,
1613 			 "\nStatistics_Agg_TX_Error:\n");
1614 
1615 	pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
1616 			 iwl_get_agg_tx_fail_reason(AGG_TX_STATE_UNDERRUN_MSK),
1617 			 priv->reply_agg_tx_stats.underrun);
1618 	pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
1619 			 iwl_get_agg_tx_fail_reason(AGG_TX_STATE_BT_PRIO_MSK),
1620 			 priv->reply_agg_tx_stats.bt_prio);
1621 	pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
1622 			 iwl_get_agg_tx_fail_reason(AGG_TX_STATE_FEW_BYTES_MSK),
1623 			 priv->reply_agg_tx_stats.few_bytes);
1624 	pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
1625 			 iwl_get_agg_tx_fail_reason(AGG_TX_STATE_ABORT_MSK),
1626 			 priv->reply_agg_tx_stats.abort);
1627 	pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t%u\n",
1628 			 iwl_get_agg_tx_fail_reason(
1629 				AGG_TX_STATE_LAST_SENT_TTL_MSK),
1630 			 priv->reply_agg_tx_stats.last_sent_ttl);
1631 	pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t%u\n",
1632 			 iwl_get_agg_tx_fail_reason(
1633 				AGG_TX_STATE_LAST_SENT_TRY_CNT_MSK),
1634 			 priv->reply_agg_tx_stats.last_sent_try);
1635 	pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t%u\n",
1636 			 iwl_get_agg_tx_fail_reason(
1637 				AGG_TX_STATE_LAST_SENT_BT_KILL_MSK),
1638 			 priv->reply_agg_tx_stats.last_sent_bt_kill);
1639 	pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
1640 			 iwl_get_agg_tx_fail_reason(AGG_TX_STATE_SCD_QUERY_MSK),
1641 			 priv->reply_agg_tx_stats.scd_query);
1642 	pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t%u\n",
1643 			 iwl_get_agg_tx_fail_reason(
1644 				AGG_TX_STATE_TEST_BAD_CRC32_MSK),
1645 			 priv->reply_agg_tx_stats.bad_crc32);
1646 	pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
1647 			 iwl_get_agg_tx_fail_reason(AGG_TX_STATE_RESPONSE_MSK),
1648 			 priv->reply_agg_tx_stats.response);
1649 	pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
1650 			 iwl_get_agg_tx_fail_reason(AGG_TX_STATE_DUMP_TX_MSK),
1651 			 priv->reply_agg_tx_stats.dump_tx);
1652 	pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
1653 			 iwl_get_agg_tx_fail_reason(AGG_TX_STATE_DELAY_TX_MSK),
1654 			 priv->reply_agg_tx_stats.delay_tx);
1655 	pos += scnprintf(buf + pos, bufsz - pos, "UNKNOWN:\t\t\t%u\n",
1656 			 priv->reply_agg_tx_stats.unknown);
1657 
1658 	ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
1659 	kfree(buf);
1660 	return ret;
1661 }
1662 
1663 static ssize_t iwl_dbgfs_sensitivity_read(struct file *file,
1664 					char __user *user_buf,
1665 					size_t count, loff_t *ppos) {
1666 
1667 	struct iwl_priv *priv = file->private_data;
1668 	int pos = 0;
1669 	int cnt = 0;
1670 	char *buf;
1671 	int bufsz = sizeof(struct iwl_sensitivity_data) * 4 + 100;
1672 	ssize_t ret;
1673 	struct iwl_sensitivity_data *data;
1674 
1675 	data = &priv->sensitivity_data;
1676 	buf = kzalloc(bufsz, GFP_KERNEL);
1677 	if (!buf)
1678 		return -ENOMEM;
1679 
1680 	pos += scnprintf(buf + pos, bufsz - pos, "auto_corr_ofdm:\t\t\t %u\n",
1681 			data->auto_corr_ofdm);
1682 	pos += scnprintf(buf + pos, bufsz - pos,
1683 			"auto_corr_ofdm_mrc:\t\t %u\n",
1684 			data->auto_corr_ofdm_mrc);
1685 	pos += scnprintf(buf + pos, bufsz - pos, "auto_corr_ofdm_x1:\t\t %u\n",
1686 			data->auto_corr_ofdm_x1);
1687 	pos += scnprintf(buf + pos, bufsz - pos,
1688 			"auto_corr_ofdm_mrc_x1:\t\t %u\n",
1689 			data->auto_corr_ofdm_mrc_x1);
1690 	pos += scnprintf(buf + pos, bufsz - pos, "auto_corr_cck:\t\t\t %u\n",
1691 			data->auto_corr_cck);
1692 	pos += scnprintf(buf + pos, bufsz - pos, "auto_corr_cck_mrc:\t\t %u\n",
1693 			data->auto_corr_cck_mrc);
1694 	pos += scnprintf(buf + pos, bufsz - pos,
1695 			"last_bad_plcp_cnt_ofdm:\t\t %u\n",
1696 			data->last_bad_plcp_cnt_ofdm);
1697 	pos += scnprintf(buf + pos, bufsz - pos, "last_fa_cnt_ofdm:\t\t %u\n",
1698 			data->last_fa_cnt_ofdm);
1699 	pos += scnprintf(buf + pos, bufsz - pos,
1700 			"last_bad_plcp_cnt_cck:\t\t %u\n",
1701 			data->last_bad_plcp_cnt_cck);
1702 	pos += scnprintf(buf + pos, bufsz - pos, "last_fa_cnt_cck:\t\t %u\n",
1703 			data->last_fa_cnt_cck);
1704 	pos += scnprintf(buf + pos, bufsz - pos, "nrg_curr_state:\t\t\t %u\n",
1705 			data->nrg_curr_state);
1706 	pos += scnprintf(buf + pos, bufsz - pos, "nrg_prev_state:\t\t\t %u\n",
1707 			data->nrg_prev_state);
1708 	pos += scnprintf(buf + pos, bufsz - pos, "nrg_value:\t\t\t");
1709 	for (cnt = 0; cnt < 10; cnt++) {
1710 		pos += scnprintf(buf + pos, bufsz - pos, " %u",
1711 				data->nrg_value[cnt]);
1712 	}
1713 	pos += scnprintf(buf + pos, bufsz - pos, "\n");
1714 	pos += scnprintf(buf + pos, bufsz - pos, "nrg_silence_rssi:\t\t");
1715 	for (cnt = 0; cnt < NRG_NUM_PREV_STAT_L; cnt++) {
1716 		pos += scnprintf(buf + pos, bufsz - pos, " %u",
1717 				data->nrg_silence_rssi[cnt]);
1718 	}
1719 	pos += scnprintf(buf + pos, bufsz - pos, "\n");
1720 	pos += scnprintf(buf + pos, bufsz - pos, "nrg_silence_ref:\t\t %u\n",
1721 			data->nrg_silence_ref);
1722 	pos += scnprintf(buf + pos, bufsz - pos, "nrg_energy_idx:\t\t\t %u\n",
1723 			data->nrg_energy_idx);
1724 	pos += scnprintf(buf + pos, bufsz - pos, "nrg_silence_idx:\t\t %u\n",
1725 			data->nrg_silence_idx);
1726 	pos += scnprintf(buf + pos, bufsz - pos, "nrg_th_cck:\t\t\t %u\n",
1727 			data->nrg_th_cck);
1728 	pos += scnprintf(buf + pos, bufsz - pos,
1729 			"nrg_auto_corr_silence_diff:\t %u\n",
1730 			data->nrg_auto_corr_silence_diff);
1731 	pos += scnprintf(buf + pos, bufsz - pos, "num_in_cck_no_fa:\t\t %u\n",
1732 			data->num_in_cck_no_fa);
1733 	pos += scnprintf(buf + pos, bufsz - pos, "nrg_th_ofdm:\t\t\t %u\n",
1734 			data->nrg_th_ofdm);
1735 
1736 	ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
1737 	kfree(buf);
1738 	return ret;
1739 }
1740 
1741 
1742 static ssize_t iwl_dbgfs_chain_noise_read(struct file *file,
1743 					char __user *user_buf,
1744 					size_t count, loff_t *ppos) {
1745 
1746 	struct iwl_priv *priv = file->private_data;
1747 	int pos = 0;
1748 	int cnt = 0;
1749 	char *buf;
1750 	int bufsz = sizeof(struct iwl_chain_noise_data) * 4 + 100;
1751 	ssize_t ret;
1752 	struct iwl_chain_noise_data *data;
1753 
1754 	data = &priv->chain_noise_data;
1755 	buf = kzalloc(bufsz, GFP_KERNEL);
1756 	if (!buf)
1757 		return -ENOMEM;
1758 
1759 	pos += scnprintf(buf + pos, bufsz - pos, "active_chains:\t\t\t %u\n",
1760 			data->active_chains);
1761 	pos += scnprintf(buf + pos, bufsz - pos, "chain_noise_a:\t\t\t %u\n",
1762 			data->chain_noise_a);
1763 	pos += scnprintf(buf + pos, bufsz - pos, "chain_noise_b:\t\t\t %u\n",
1764 			data->chain_noise_b);
1765 	pos += scnprintf(buf + pos, bufsz - pos, "chain_noise_c:\t\t\t %u\n",
1766 			data->chain_noise_c);
1767 	pos += scnprintf(buf + pos, bufsz - pos, "chain_signal_a:\t\t\t %u\n",
1768 			data->chain_signal_a);
1769 	pos += scnprintf(buf + pos, bufsz - pos, "chain_signal_b:\t\t\t %u\n",
1770 			data->chain_signal_b);
1771 	pos += scnprintf(buf + pos, bufsz - pos, "chain_signal_c:\t\t\t %u\n",
1772 			data->chain_signal_c);
1773 	pos += scnprintf(buf + pos, bufsz - pos, "beacon_count:\t\t\t %u\n",
1774 			data->beacon_count);
1775 
1776 	pos += scnprintf(buf + pos, bufsz - pos, "disconn_array:\t\t\t");
1777 	for (cnt = 0; cnt < NUM_RX_CHAINS; cnt++) {
1778 		pos += scnprintf(buf + pos, bufsz - pos, " %u",
1779 				data->disconn_array[cnt]);
1780 	}
1781 	pos += scnprintf(buf + pos, bufsz - pos, "\n");
1782 	pos += scnprintf(buf + pos, bufsz - pos, "delta_gain_code:\t\t");
1783 	for (cnt = 0; cnt < NUM_RX_CHAINS; cnt++) {
1784 		pos += scnprintf(buf + pos, bufsz - pos, " %u",
1785 				data->delta_gain_code[cnt]);
1786 	}
1787 	pos += scnprintf(buf + pos, bufsz - pos, "\n");
1788 	pos += scnprintf(buf + pos, bufsz - pos, "radio_write:\t\t\t %u\n",
1789 			data->radio_write);
1790 	pos += scnprintf(buf + pos, bufsz - pos, "state:\t\t\t\t %u\n",
1791 			data->state);
1792 
1793 	ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
1794 	kfree(buf);
1795 	return ret;
1796 }
1797 
1798 static ssize_t iwl_dbgfs_power_save_status_read(struct file *file,
1799 						    char __user *user_buf,
1800 						    size_t count, loff_t *ppos)
1801 {
1802 	struct iwl_priv *priv = file->private_data;
1803 	char buf[60];
1804 	int pos = 0;
1805 	const size_t bufsz = sizeof(buf);
1806 	u32 pwrsave_status;
1807 
1808 	pwrsave_status = iwl_read32(priv->trans, CSR_GP_CNTRL) &
1809 			CSR_GP_REG_POWER_SAVE_STATUS_MSK;
1810 
1811 	pos += scnprintf(buf + pos, bufsz - pos, "Power Save Status: ");
1812 	pos += scnprintf(buf + pos, bufsz - pos, "%s\n",
1813 		(pwrsave_status == CSR_GP_REG_NO_POWER_SAVE) ? "none" :
1814 		(pwrsave_status == CSR_GP_REG_MAC_POWER_SAVE) ? "MAC" :
1815 		(pwrsave_status == CSR_GP_REG_PHY_POWER_SAVE) ? "PHY" :
1816 		"error");
1817 
1818 	return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
1819 }
1820 
1821 static ssize_t iwl_dbgfs_clear_ucode_statistics_write(struct file *file,
1822 					 const char __user *user_buf,
1823 					 size_t count, loff_t *ppos)
1824 {
1825 	struct iwl_priv *priv = file->private_data;
1826 	char buf[8];
1827 	int buf_size;
1828 	int clear;
1829 
1830 	memset(buf, 0, sizeof(buf));
1831 	buf_size = min(count, sizeof(buf) -  1);
1832 	if (copy_from_user(buf, user_buf, buf_size))
1833 		return -EFAULT;
1834 	if (sscanf(buf, "%d", &clear) != 1)
1835 		return -EFAULT;
1836 
1837 	/* make request to uCode to retrieve statistics information */
1838 	mutex_lock(&priv->mutex);
1839 	iwl_send_statistics_request(priv, 0, true);
1840 	mutex_unlock(&priv->mutex);
1841 
1842 	return count;
1843 }
1844 
1845 static ssize_t iwl_dbgfs_ucode_tracing_read(struct file *file,
1846 					char __user *user_buf,
1847 					size_t count, loff_t *ppos) {
1848 
1849 	struct iwl_priv *priv = file->private_data;
1850 	int pos = 0;
1851 	char buf[128];
1852 	const size_t bufsz = sizeof(buf);
1853 
1854 	pos += scnprintf(buf + pos, bufsz - pos, "ucode trace timer is %s\n",
1855 			priv->event_log.ucode_trace ? "On" : "Off");
1856 	pos += scnprintf(buf + pos, bufsz - pos, "non_wraps_count:\t\t %u\n",
1857 			priv->event_log.non_wraps_count);
1858 	pos += scnprintf(buf + pos, bufsz - pos, "wraps_once_count:\t\t %u\n",
1859 			priv->event_log.wraps_once_count);
1860 	pos += scnprintf(buf + pos, bufsz - pos, "wraps_more_count:\t\t %u\n",
1861 			priv->event_log.wraps_more_count);
1862 
1863 	return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
1864 }
1865 
1866 static ssize_t iwl_dbgfs_ucode_tracing_write(struct file *file,
1867 					 const char __user *user_buf,
1868 					 size_t count, loff_t *ppos)
1869 {
1870 	struct iwl_priv *priv = file->private_data;
1871 	char buf[8];
1872 	int buf_size;
1873 	int trace;
1874 
1875 	memset(buf, 0, sizeof(buf));
1876 	buf_size = min(count, sizeof(buf) -  1);
1877 	if (copy_from_user(buf, user_buf, buf_size))
1878 		return -EFAULT;
1879 	if (sscanf(buf, "%d", &trace) != 1)
1880 		return -EFAULT;
1881 
1882 	if (trace) {
1883 		priv->event_log.ucode_trace = true;
1884 		if (iwl_is_alive(priv)) {
1885 			/* start collecting data now */
1886 			mod_timer(&priv->ucode_trace, jiffies);
1887 		}
1888 	} else {
1889 		priv->event_log.ucode_trace = false;
1890 		del_timer_sync(&priv->ucode_trace);
1891 	}
1892 
1893 	return count;
1894 }
1895 
1896 static ssize_t iwl_dbgfs_rxon_flags_read(struct file *file,
1897 					 char __user *user_buf,
1898 					 size_t count, loff_t *ppos) {
1899 
1900 	struct iwl_priv *priv = file->private_data;
1901 	int len = 0;
1902 	char buf[20];
1903 
1904 	len = sprintf(buf, "0x%04X\n",
1905 		le32_to_cpu(priv->contexts[IWL_RXON_CTX_BSS].active.flags));
1906 	return simple_read_from_buffer(user_buf, count, ppos, buf, len);
1907 }
1908 
1909 static ssize_t iwl_dbgfs_rxon_filter_flags_read(struct file *file,
1910 						char __user *user_buf,
1911 						size_t count, loff_t *ppos) {
1912 
1913 	struct iwl_priv *priv = file->private_data;
1914 	int len = 0;
1915 	char buf[20];
1916 
1917 	len = sprintf(buf, "0x%04X\n",
1918 		le32_to_cpu(priv->contexts[IWL_RXON_CTX_BSS].active.filter_flags));
1919 	return simple_read_from_buffer(user_buf, count, ppos, buf, len);
1920 }
1921 
1922 static ssize_t iwl_dbgfs_missed_beacon_read(struct file *file,
1923 					char __user *user_buf,
1924 					size_t count, loff_t *ppos) {
1925 
1926 	struct iwl_priv *priv = file->private_data;
1927 	int pos = 0;
1928 	char buf[12];
1929 	const size_t bufsz = sizeof(buf);
1930 
1931 	pos += scnprintf(buf + pos, bufsz - pos, "%d\n",
1932 			priv->missed_beacon_threshold);
1933 
1934 	return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
1935 }
1936 
1937 static ssize_t iwl_dbgfs_missed_beacon_write(struct file *file,
1938 					 const char __user *user_buf,
1939 					 size_t count, loff_t *ppos)
1940 {
1941 	struct iwl_priv *priv = file->private_data;
1942 	char buf[8];
1943 	int buf_size;
1944 	int missed;
1945 
1946 	memset(buf, 0, sizeof(buf));
1947 	buf_size = min(count, sizeof(buf) -  1);
1948 	if (copy_from_user(buf, user_buf, buf_size))
1949 		return -EFAULT;
1950 	if (sscanf(buf, "%d", &missed) != 1)
1951 		return -EINVAL;
1952 
1953 	if (missed < IWL_MISSED_BEACON_THRESHOLD_MIN ||
1954 	    missed > IWL_MISSED_BEACON_THRESHOLD_MAX)
1955 		priv->missed_beacon_threshold =
1956 			IWL_MISSED_BEACON_THRESHOLD_DEF;
1957 	else
1958 		priv->missed_beacon_threshold = missed;
1959 
1960 	return count;
1961 }
1962 
1963 static ssize_t iwl_dbgfs_plcp_delta_read(struct file *file,
1964 					char __user *user_buf,
1965 					size_t count, loff_t *ppos) {
1966 
1967 	struct iwl_priv *priv = file->private_data;
1968 	int pos = 0;
1969 	char buf[12];
1970 	const size_t bufsz = sizeof(buf);
1971 
1972 	pos += scnprintf(buf + pos, bufsz - pos, "%u\n",
1973 			priv->plcp_delta_threshold);
1974 
1975 	return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
1976 }
1977 
1978 static ssize_t iwl_dbgfs_plcp_delta_write(struct file *file,
1979 					const char __user *user_buf,
1980 					size_t count, loff_t *ppos) {
1981 
1982 	struct iwl_priv *priv = file->private_data;
1983 	char buf[8];
1984 	int buf_size;
1985 	int plcp;
1986 
1987 	memset(buf, 0, sizeof(buf));
1988 	buf_size = min(count, sizeof(buf) -  1);
1989 	if (copy_from_user(buf, user_buf, buf_size))
1990 		return -EFAULT;
1991 	if (sscanf(buf, "%d", &plcp) != 1)
1992 		return -EINVAL;
1993 	if ((plcp < IWL_MAX_PLCP_ERR_THRESHOLD_MIN) ||
1994 		(plcp > IWL_MAX_PLCP_ERR_THRESHOLD_MAX))
1995 		priv->plcp_delta_threshold =
1996 			IWL_MAX_PLCP_ERR_THRESHOLD_DISABLE;
1997 	else
1998 		priv->plcp_delta_threshold = plcp;
1999 	return count;
2000 }
2001 
2002 static ssize_t iwl_dbgfs_rf_reset_read(struct file *file,
2003 				       char __user *user_buf,
2004 				       size_t count, loff_t *ppos)
2005 {
2006 	struct iwl_priv *priv = file->private_data;
2007 	int pos = 0;
2008 	char buf[300];
2009 	const size_t bufsz = sizeof(buf);
2010 	struct iwl_rf_reset *rf_reset = &priv->rf_reset;
2011 
2012 	pos += scnprintf(buf + pos, bufsz - pos,
2013 			"RF reset statistics\n");
2014 	pos += scnprintf(buf + pos, bufsz - pos,
2015 			"\tnumber of reset request: %d\n",
2016 			rf_reset->reset_request_count);
2017 	pos += scnprintf(buf + pos, bufsz - pos,
2018 			"\tnumber of reset request success: %d\n",
2019 			rf_reset->reset_success_count);
2020 	pos += scnprintf(buf + pos, bufsz - pos,
2021 			"\tnumber of reset request reject: %d\n",
2022 			rf_reset->reset_reject_count);
2023 
2024 	return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
2025 }
2026 
2027 static ssize_t iwl_dbgfs_rf_reset_write(struct file *file,
2028 					const char __user *user_buf,
2029 					size_t count, loff_t *ppos) {
2030 
2031 	struct iwl_priv *priv = file->private_data;
2032 	int ret;
2033 
2034 	ret = iwl_force_rf_reset(priv, true);
2035 	return ret ? ret : count;
2036 }
2037 
2038 static ssize_t iwl_dbgfs_txfifo_flush_write(struct file *file,
2039 					const char __user *user_buf,
2040 					size_t count, loff_t *ppos) {
2041 
2042 	struct iwl_priv *priv = file->private_data;
2043 	char buf[8];
2044 	int buf_size;
2045 	int flush;
2046 
2047 	memset(buf, 0, sizeof(buf));
2048 	buf_size = min(count, sizeof(buf) -  1);
2049 	if (copy_from_user(buf, user_buf, buf_size))
2050 		return -EFAULT;
2051 	if (sscanf(buf, "%d", &flush) != 1)
2052 		return -EINVAL;
2053 
2054 	if (iwl_is_rfkill(priv))
2055 		return -EFAULT;
2056 
2057 	iwlagn_dev_txfifo_flush(priv);
2058 
2059 	return count;
2060 }
2061 
2062 static ssize_t iwl_dbgfs_bt_traffic_read(struct file *file,
2063 					char __user *user_buf,
2064 					size_t count, loff_t *ppos) {
2065 
2066 	struct iwl_priv *priv = (struct iwl_priv *)file->private_data;
2067 	int pos = 0;
2068 	char buf[200];
2069 	const size_t bufsz = sizeof(buf);
2070 
2071 	if (!priv->bt_enable_flag) {
2072 		pos += scnprintf(buf + pos, bufsz - pos, "BT coex disabled\n");
2073 		return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
2074 	}
2075 	pos += scnprintf(buf + pos, bufsz - pos, "BT enable flag: 0x%x\n",
2076 		priv->bt_enable_flag);
2077 	pos += scnprintf(buf + pos, bufsz - pos, "BT in %s mode\n",
2078 		priv->bt_full_concurrent ? "full concurrency" : "3-wire");
2079 	pos += scnprintf(buf + pos, bufsz - pos, "BT status: %s, "
2080 			 "last traffic notif: %d\n",
2081 		priv->bt_status ? "On" : "Off", priv->last_bt_traffic_load);
2082 	pos += scnprintf(buf + pos, bufsz - pos, "ch_announcement: %d, "
2083 			 "kill_ack_mask: %x, kill_cts_mask: %x\n",
2084 		priv->bt_ch_announce, priv->kill_ack_mask,
2085 		priv->kill_cts_mask);
2086 
2087 	pos += scnprintf(buf + pos, bufsz - pos, "bluetooth traffic load: ");
2088 	switch (priv->bt_traffic_load) {
2089 	case IWL_BT_COEX_TRAFFIC_LOAD_CONTINUOUS:
2090 		pos += scnprintf(buf + pos, bufsz - pos, "Continuous\n");
2091 		break;
2092 	case IWL_BT_COEX_TRAFFIC_LOAD_HIGH:
2093 		pos += scnprintf(buf + pos, bufsz - pos, "High\n");
2094 		break;
2095 	case IWL_BT_COEX_TRAFFIC_LOAD_LOW:
2096 		pos += scnprintf(buf + pos, bufsz - pos, "Low\n");
2097 		break;
2098 	case IWL_BT_COEX_TRAFFIC_LOAD_NONE:
2099 	default:
2100 		pos += scnprintf(buf + pos, bufsz - pos, "None\n");
2101 		break;
2102 	}
2103 
2104 	return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
2105 }
2106 
2107 static ssize_t iwl_dbgfs_protection_mode_read(struct file *file,
2108 					char __user *user_buf,
2109 					size_t count, loff_t *ppos)
2110 {
2111 	struct iwl_priv *priv = (struct iwl_priv *)file->private_data;
2112 
2113 	int pos = 0;
2114 	char buf[40];
2115 	const size_t bufsz = sizeof(buf);
2116 
2117 	if (priv->cfg->ht_params)
2118 		pos += scnprintf(buf + pos, bufsz - pos,
2119 			 "use %s for aggregation\n",
2120 			 (priv->hw_params.use_rts_for_aggregation) ?
2121 				"rts/cts" : "cts-to-self");
2122 	else
2123 		pos += scnprintf(buf + pos, bufsz - pos, "N/A");
2124 
2125 	return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
2126 }
2127 
2128 static ssize_t iwl_dbgfs_protection_mode_write(struct file *file,
2129 					const char __user *user_buf,
2130 					size_t count, loff_t *ppos) {
2131 
2132 	struct iwl_priv *priv = file->private_data;
2133 	char buf[8];
2134 	int buf_size;
2135 	int rts;
2136 
2137 	if (!priv->cfg->ht_params)
2138 		return -EINVAL;
2139 
2140 	memset(buf, 0, sizeof(buf));
2141 	buf_size = min(count, sizeof(buf) -  1);
2142 	if (copy_from_user(buf, user_buf, buf_size))
2143 		return -EFAULT;
2144 	if (sscanf(buf, "%d", &rts) != 1)
2145 		return -EINVAL;
2146 	if (rts)
2147 		priv->hw_params.use_rts_for_aggregation = true;
2148 	else
2149 		priv->hw_params.use_rts_for_aggregation = false;
2150 	return count;
2151 }
2152 
2153 static int iwl_cmd_echo_test(struct iwl_priv *priv)
2154 {
2155 	int ret;
2156 	struct iwl_host_cmd cmd = {
2157 		.id = REPLY_ECHO,
2158 		.len = { 0 },
2159 	};
2160 
2161 	ret = iwl_dvm_send_cmd(priv, &cmd);
2162 	if (ret)
2163 		IWL_ERR(priv, "echo testing fail: 0X%x\n", ret);
2164 	else
2165 		IWL_DEBUG_INFO(priv, "echo testing pass\n");
2166 	return ret;
2167 }
2168 
2169 static ssize_t iwl_dbgfs_echo_test_write(struct file *file,
2170 					const char __user *user_buf,
2171 					size_t count, loff_t *ppos)
2172 {
2173 	struct iwl_priv *priv = file->private_data;
2174 	char buf[8];
2175 	int buf_size;
2176 
2177 	memset(buf, 0, sizeof(buf));
2178 	buf_size = min(count, sizeof(buf) -  1);
2179 	if (copy_from_user(buf, user_buf, buf_size))
2180 		return -EFAULT;
2181 
2182 	iwl_cmd_echo_test(priv);
2183 	return count;
2184 }
2185 
2186 #ifdef CONFIG_IWLWIFI_DEBUG
2187 static ssize_t iwl_dbgfs_log_event_read(struct file *file,
2188 					 char __user *user_buf,
2189 					 size_t count, loff_t *ppos)
2190 {
2191 	struct iwl_priv *priv = file->private_data;
2192 	char *buf = NULL;
2193 	ssize_t ret;
2194 
2195 	ret = iwl_dump_nic_event_log(priv, true, &buf);
2196 	if (ret > 0)
2197 		ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
2198 	kfree(buf);
2199 	return ret;
2200 }
2201 
2202 static ssize_t iwl_dbgfs_log_event_write(struct file *file,
2203 					const char __user *user_buf,
2204 					size_t count, loff_t *ppos)
2205 {
2206 	struct iwl_priv *priv = file->private_data;
2207 	u32 event_log_flag;
2208 	char buf[8];
2209 	int buf_size;
2210 
2211 	/* check that the interface is up */
2212 	if (!iwl_is_ready(priv))
2213 		return -EAGAIN;
2214 
2215 	memset(buf, 0, sizeof(buf));
2216 	buf_size = min(count, sizeof(buf) -  1);
2217 	if (copy_from_user(buf, user_buf, buf_size))
2218 		return -EFAULT;
2219 	if (sscanf(buf, "%u", &event_log_flag) != 1)
2220 		return -EFAULT;
2221 	if (event_log_flag == 1)
2222 		iwl_dump_nic_event_log(priv, true, NULL);
2223 
2224 	return count;
2225 }
2226 #endif
2227 
2228 static ssize_t iwl_dbgfs_calib_disabled_read(struct file *file,
2229 					 char __user *user_buf,
2230 					 size_t count, loff_t *ppos)
2231 {
2232 	struct iwl_priv *priv = file->private_data;
2233 	char buf[120];
2234 	int pos = 0;
2235 	const size_t bufsz = sizeof(buf);
2236 
2237 	pos += scnprintf(buf + pos, bufsz - pos,
2238 			 "Sensitivity calibrations %s\n",
2239 			 (priv->calib_disabled &
2240 					IWL_SENSITIVITY_CALIB_DISABLED) ?
2241 			 "DISABLED" : "ENABLED");
2242 	pos += scnprintf(buf + pos, bufsz - pos,
2243 			 "Chain noise calibrations %s\n",
2244 			 (priv->calib_disabled &
2245 					IWL_CHAIN_NOISE_CALIB_DISABLED) ?
2246 			 "DISABLED" : "ENABLED");
2247 	pos += scnprintf(buf + pos, bufsz - pos,
2248 			 "Tx power calibrations %s\n",
2249 			 (priv->calib_disabled &
2250 					IWL_TX_POWER_CALIB_DISABLED) ?
2251 			 "DISABLED" : "ENABLED");
2252 
2253 	return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
2254 }
2255 
2256 static ssize_t iwl_dbgfs_calib_disabled_write(struct file *file,
2257 					      const char __user *user_buf,
2258 					      size_t count, loff_t *ppos)
2259 {
2260 	struct iwl_priv *priv = file->private_data;
2261 	char buf[8];
2262 	u32 calib_disabled;
2263 	int buf_size;
2264 
2265 	memset(buf, 0, sizeof(buf));
2266 	buf_size = min(count, sizeof(buf) - 1);
2267 	if (copy_from_user(buf, user_buf, buf_size))
2268 		return -EFAULT;
2269 	if (sscanf(buf, "%x", &calib_disabled) != 1)
2270 		return -EFAULT;
2271 
2272 	priv->calib_disabled = calib_disabled;
2273 
2274 	return count;
2275 }
2276 
2277 static ssize_t iwl_dbgfs_fw_restart_write(struct file *file,
2278 					  const char __user *user_buf,
2279 					  size_t count, loff_t *ppos)
2280 {
2281 	struct iwl_priv *priv = file->private_data;
2282 	bool fw_restart = iwlwifi_mod_params.fw_restart;
2283 	int __maybe_unused ret;
2284 
2285 	iwlwifi_mod_params.fw_restart = true;
2286 
2287 	mutex_lock(&priv->mutex);
2288 
2289 	/* take the return value to make compiler happy - it will fail anyway */
2290 	ret = iwl_dvm_send_cmd_pdu(priv, REPLY_ERROR, 0, 0, NULL);
2291 
2292 	mutex_unlock(&priv->mutex);
2293 
2294 	iwlwifi_mod_params.fw_restart = fw_restart;
2295 
2296 	return count;
2297 }
2298 
2299 DEBUGFS_READ_FILE_OPS(ucode_rx_stats);
2300 DEBUGFS_READ_FILE_OPS(ucode_tx_stats);
2301 DEBUGFS_READ_FILE_OPS(ucode_general_stats);
2302 DEBUGFS_READ_FILE_OPS(sensitivity);
2303 DEBUGFS_READ_FILE_OPS(chain_noise);
2304 DEBUGFS_READ_FILE_OPS(power_save_status);
2305 DEBUGFS_WRITE_FILE_OPS(clear_ucode_statistics);
2306 DEBUGFS_READ_WRITE_FILE_OPS(ucode_tracing);
2307 DEBUGFS_READ_WRITE_FILE_OPS(missed_beacon);
2308 DEBUGFS_READ_WRITE_FILE_OPS(plcp_delta);
2309 DEBUGFS_READ_WRITE_FILE_OPS(rf_reset);
2310 DEBUGFS_READ_FILE_OPS(rxon_flags);
2311 DEBUGFS_READ_FILE_OPS(rxon_filter_flags);
2312 DEBUGFS_WRITE_FILE_OPS(txfifo_flush);
2313 DEBUGFS_READ_FILE_OPS(ucode_bt_stats);
2314 DEBUGFS_READ_FILE_OPS(bt_traffic);
2315 DEBUGFS_READ_WRITE_FILE_OPS(protection_mode);
2316 DEBUGFS_READ_FILE_OPS(reply_tx_error);
2317 DEBUGFS_WRITE_FILE_OPS(echo_test);
2318 DEBUGFS_WRITE_FILE_OPS(fw_restart);
2319 #ifdef CONFIG_IWLWIFI_DEBUG
2320 DEBUGFS_READ_WRITE_FILE_OPS(log_event);
2321 #endif
2322 DEBUGFS_READ_WRITE_FILE_OPS(calib_disabled);
2323 
2324 /*
2325  * Create the debugfs files and directories
2326  *
2327  */
2328 void iwl_dbgfs_register(struct iwl_priv *priv, struct dentry *dbgfs_dir)
2329 {
2330 	struct dentry *dir_data, *dir_rf, *dir_debug;
2331 
2332 	priv->debugfs_dir = dbgfs_dir;
2333 
2334 	dir_data = debugfs_create_dir("data", dbgfs_dir);
2335 	dir_rf = debugfs_create_dir("rf", dbgfs_dir);
2336 	dir_debug = debugfs_create_dir("debug", dbgfs_dir);
2337 
2338 	DEBUGFS_ADD_FILE(nvm, dir_data, 0400);
2339 	DEBUGFS_ADD_FILE(sram, dir_data, 0600);
2340 	DEBUGFS_ADD_FILE(wowlan_sram, dir_data, 0400);
2341 	DEBUGFS_ADD_FILE(stations, dir_data, 0400);
2342 	DEBUGFS_ADD_FILE(channels, dir_data, 0400);
2343 	DEBUGFS_ADD_FILE(status, dir_data, 0400);
2344 	DEBUGFS_ADD_FILE(rx_handlers, dir_data, 0600);
2345 	DEBUGFS_ADD_FILE(qos, dir_data, 0400);
2346 	DEBUGFS_ADD_FILE(sleep_level_override, dir_data, 0600);
2347 	DEBUGFS_ADD_FILE(current_sleep_command, dir_data, 0400);
2348 	DEBUGFS_ADD_FILE(thermal_throttling, dir_data, 0400);
2349 	DEBUGFS_ADD_FILE(disable_ht40, dir_data, 0600);
2350 	DEBUGFS_ADD_FILE(temperature, dir_data, 0400);
2351 
2352 	DEBUGFS_ADD_FILE(power_save_status, dir_debug, 0400);
2353 	DEBUGFS_ADD_FILE(clear_ucode_statistics, dir_debug, 0200);
2354 	DEBUGFS_ADD_FILE(missed_beacon, dir_debug, 0200);
2355 	DEBUGFS_ADD_FILE(plcp_delta, dir_debug, 0600);
2356 	DEBUGFS_ADD_FILE(rf_reset, dir_debug, 0600);
2357 	DEBUGFS_ADD_FILE(ucode_rx_stats, dir_debug, 0400);
2358 	DEBUGFS_ADD_FILE(ucode_tx_stats, dir_debug, 0400);
2359 	DEBUGFS_ADD_FILE(ucode_general_stats, dir_debug, 0400);
2360 	DEBUGFS_ADD_FILE(txfifo_flush, dir_debug, 0200);
2361 	DEBUGFS_ADD_FILE(protection_mode, dir_debug, 0600);
2362 	DEBUGFS_ADD_FILE(sensitivity, dir_debug, 0400);
2363 	DEBUGFS_ADD_FILE(chain_noise, dir_debug, 0400);
2364 	DEBUGFS_ADD_FILE(ucode_tracing, dir_debug, 0600);
2365 	DEBUGFS_ADD_FILE(ucode_bt_stats, dir_debug, 0400);
2366 	DEBUGFS_ADD_FILE(reply_tx_error, dir_debug, 0400);
2367 	DEBUGFS_ADD_FILE(rxon_flags, dir_debug, 0200);
2368 	DEBUGFS_ADD_FILE(rxon_filter_flags, dir_debug, 0200);
2369 	DEBUGFS_ADD_FILE(echo_test, dir_debug, 0200);
2370 	DEBUGFS_ADD_FILE(fw_restart, dir_debug, 0200);
2371 #ifdef CONFIG_IWLWIFI_DEBUG
2372 	DEBUGFS_ADD_FILE(log_event, dir_debug, 0600);
2373 #endif
2374 
2375 	if (iwl_advanced_bt_coexist(priv))
2376 		DEBUGFS_ADD_FILE(bt_traffic, dir_debug, 0400);
2377 
2378 	/* Calibrations disabled/enabled status*/
2379 	DEBUGFS_ADD_FILE(calib_disabled, dir_rf, 0600);
2380 
2381 	/*
2382 	 * Create a symlink with mac80211. This is not very robust, as it does
2383 	 * not remove the symlink created. The implicit assumption is that
2384 	 * when the opmode exits, mac80211 will also exit, and will remove
2385 	 * this symlink as part of its cleanup.
2386 	 */
2387 	if (priv->mac80211_registered) {
2388 		char buf[100];
2389 		struct dentry *mac80211_dir, *dev_dir;
2390 
2391 		dev_dir = dbgfs_dir->d_parent;
2392 		mac80211_dir = priv->hw->wiphy->debugfsdir;
2393 
2394 		snprintf(buf, 100, "../../%pd2", dev_dir);
2395 
2396 		debugfs_create_symlink("iwlwifi", mac80211_dir, buf);
2397 	}
2398 }
2399