iwlwifi: support NVM access (EEPROM/OTP)
[linux-2.6.git] / drivers / net / wireless / iwlwifi / iwl-debugfs.c
1 /******************************************************************************
2  *
3  * GPL LICENSE SUMMARY
4  *
5  * Copyright(c) 2008 - 2009 Intel Corporation. All rights reserved.
6  *
7  * This program is free software; you can redistribute it and/or modify
8  * it under the terms of version 2 of the GNU General Public License as
9  * published by the Free Software Foundation.
10  *
11  * This program is distributed in the hope that it will be useful, but
12  * WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14  * General Public License for more details.
15  *
16  * You should have received a copy of the GNU General Public License
17  * along with this program; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
19  * USA
20  *
21  * The full GNU General Public License is included in this distribution
22  * in the file called LICENSE.GPL.
23  *
24  * Contact Information:
25  *  Intel Linux Wireless <ilw@linux.intel.com>
26  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27  *****************************************************************************/
28
29 #include <linux/kernel.h>
30 #include <linux/module.h>
31 #include <linux/debugfs.h>
32
33 #include <linux/ieee80211.h>
34 #include <net/mac80211.h>
35
36
37 #include "iwl-dev.h"
38 #include "iwl-debug.h"
39 #include "iwl-core.h"
40 #include "iwl-io.h"
41
42
43 /* create and remove of files */
44 #define DEBUGFS_ADD_DIR(name, parent) do {                              \
45         dbgfs->dir_##name = debugfs_create_dir(#name, parent);          \
46         if (!(dbgfs->dir_##name))                                       \
47                 goto err;                                               \
48 } while (0)
49
50 #define DEBUGFS_ADD_FILE(name, parent) do {                             \
51         dbgfs->dbgfs_##parent##_files.file_##name =                     \
52         debugfs_create_file(#name, 0644, dbgfs->dir_##parent, priv,     \
53                                 &iwl_dbgfs_##name##_ops);               \
54         if (!(dbgfs->dbgfs_##parent##_files.file_##name))               \
55                 goto err;                                               \
56 } while (0)
57
58 #define DEBUGFS_ADD_BOOL(name, parent, ptr) do {                        \
59         dbgfs->dbgfs_##parent##_files.file_##name =                     \
60         debugfs_create_bool(#name, 0644, dbgfs->dir_##parent, ptr);     \
61         if (IS_ERR(dbgfs->dbgfs_##parent##_files.file_##name)           \
62                         || !dbgfs->dbgfs_##parent##_files.file_##name)  \
63                 goto err;                                               \
64 } while (0)
65
66 #define DEBUGFS_ADD_X32(name, parent, ptr) do {                        \
67         dbgfs->dbgfs_##parent##_files.file_##name =                     \
68         debugfs_create_x32(#name, 0444, dbgfs->dir_##parent, ptr);     \
69         if (IS_ERR(dbgfs->dbgfs_##parent##_files.file_##name)           \
70                         || !dbgfs->dbgfs_##parent##_files.file_##name)  \
71                 goto err;                                               \
72 } while (0)
73
74 #define DEBUGFS_REMOVE(name)  do {              \
75         debugfs_remove(name);                   \
76         name = NULL;                            \
77 } while (0);
78
79 /* file operation */
80 #define DEBUGFS_READ_FUNC(name)                                         \
81 static ssize_t iwl_dbgfs_##name##_read(struct file *file,               \
82                                         char __user *user_buf,          \
83                                         size_t count, loff_t *ppos);
84
85 #define DEBUGFS_WRITE_FUNC(name)                                        \
86 static ssize_t iwl_dbgfs_##name##_write(struct file *file,              \
87                                         const char __user *user_buf,    \
88                                         size_t count, loff_t *ppos);
89
90
91 static int iwl_dbgfs_open_file_generic(struct inode *inode, struct file *file)
92 {
93         file->private_data = inode->i_private;
94         return 0;
95 }
96
97 #define DEBUGFS_READ_FILE_OPS(name)                                     \
98         DEBUGFS_READ_FUNC(name);                                        \
99 static const struct file_operations iwl_dbgfs_##name##_ops = {          \
100         .read = iwl_dbgfs_##name##_read,                                \
101         .open = iwl_dbgfs_open_file_generic,                            \
102 };
103
104 #define DEBUGFS_WRITE_FILE_OPS(name)                                    \
105         DEBUGFS_WRITE_FUNC(name);                                       \
106 static const struct file_operations iwl_dbgfs_##name##_ops = {          \
107         .write = iwl_dbgfs_##name##_write,                              \
108         .open = iwl_dbgfs_open_file_generic,                            \
109 };
110
111
112 #define DEBUGFS_READ_WRITE_FILE_OPS(name)                               \
113         DEBUGFS_READ_FUNC(name);                                        \
114         DEBUGFS_WRITE_FUNC(name);                                       \
115 static const struct file_operations iwl_dbgfs_##name##_ops = {          \
116         .write = iwl_dbgfs_##name##_write,                              \
117         .read = iwl_dbgfs_##name##_read,                                \
118         .open = iwl_dbgfs_open_file_generic,                            \
119 };
120
121
122 static ssize_t iwl_dbgfs_tx_statistics_read(struct file *file,
123                                                 char __user *user_buf,
124                                                 size_t count, loff_t *ppos) {
125
126         struct iwl_priv *priv = (struct iwl_priv *)file->private_data;
127         char buf[256];
128         int pos = 0;
129         const size_t bufsz = sizeof(buf);
130
131         pos += scnprintf(buf + pos, bufsz - pos, "mgmt: %u\n",
132                                                 priv->tx_stats[0].cnt);
133         pos += scnprintf(buf + pos, bufsz - pos, "ctrl: %u\n",
134                                                 priv->tx_stats[1].cnt);
135         pos += scnprintf(buf + pos, bufsz - pos, "data: %u\n",
136                                                 priv->tx_stats[2].cnt);
137
138         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
139 }
140
141 static ssize_t iwl_dbgfs_rx_statistics_read(struct file *file,
142                                                 char __user *user_buf,
143                                                 size_t count, loff_t *ppos) {
144
145         struct iwl_priv *priv = (struct iwl_priv *)file->private_data;
146         char buf[256];
147         int pos = 0;
148         const size_t bufsz = sizeof(buf);
149
150         pos += scnprintf(buf + pos, bufsz - pos, "mgmt: %u\n",
151                                                 priv->rx_stats[0].cnt);
152         pos += scnprintf(buf + pos, bufsz - pos, "ctrl: %u\n",
153                                                 priv->rx_stats[1].cnt);
154         pos += scnprintf(buf + pos, bufsz - pos, "data: %u\n",
155                                                 priv->rx_stats[2].cnt);
156
157         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
158 }
159
160 #define BYTE1_MASK 0x000000ff;
161 #define BYTE2_MASK 0x0000ffff;
162 #define BYTE3_MASK 0x00ffffff;
163 static ssize_t iwl_dbgfs_sram_read(struct file *file,
164                                         char __user *user_buf,
165                                         size_t count, loff_t *ppos)
166 {
167         u32 val;
168         char buf[1024];
169         ssize_t ret;
170         int i;
171         int pos = 0;
172         struct iwl_priv *priv = (struct iwl_priv *)file->private_data;
173         const size_t bufsz = sizeof(buf);
174
175         iwl_grab_nic_access(priv);
176         for (i = priv->dbgfs->sram_len; i > 0; i -= 4) {
177                 val = iwl_read_targ_mem(priv, priv->dbgfs->sram_offset + \
178                                         priv->dbgfs->sram_len - i);
179                 if (i < 4) {
180                         switch (i) {
181                         case 1:
182                                 val &= BYTE1_MASK;
183                                 break;
184                         case 2:
185                                 val &= BYTE2_MASK;
186                                 break;
187                         case 3:
188                                 val &= BYTE3_MASK;
189                                 break;
190                         }
191                 }
192                 pos += scnprintf(buf + pos, bufsz - pos, "0x%08x ", val);
193         }
194         pos += scnprintf(buf + pos, bufsz - pos, "\n");
195         iwl_release_nic_access(priv);
196
197         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
198         return ret;
199 }
200
201 static ssize_t iwl_dbgfs_sram_write(struct file *file,
202                                         const char __user *user_buf,
203                                         size_t count, loff_t *ppos)
204 {
205         struct iwl_priv *priv = file->private_data;
206         char buf[64];
207         int buf_size;
208         u32 offset, len;
209
210         memset(buf, 0, sizeof(buf));
211         buf_size = min(count, sizeof(buf) -  1);
212         if (copy_from_user(buf, user_buf, buf_size))
213                 return -EFAULT;
214
215         if (sscanf(buf, "%x,%x", &offset, &len) == 2) {
216                 priv->dbgfs->sram_offset = offset;
217                 priv->dbgfs->sram_len = len;
218         } else {
219                 priv->dbgfs->sram_offset = 0;
220                 priv->dbgfs->sram_len = 0;
221         }
222
223         return count;
224 }
225
226 static ssize_t iwl_dbgfs_stations_read(struct file *file, char __user *user_buf,
227                                         size_t count, loff_t *ppos)
228 {
229         struct iwl_priv *priv = (struct iwl_priv *)file->private_data;
230         struct iwl_station_entry *station;
231         int max_sta = priv->hw_params.max_stations;
232         char *buf;
233         int i, j, pos = 0;
234         ssize_t ret;
235         /* Add 30 for initial string */
236         const size_t bufsz = 30 + sizeof(char) * 500 * (priv->num_stations);
237
238         buf = kmalloc(bufsz, GFP_KERNEL);
239         if (!buf)
240                 return -ENOMEM;
241
242         pos += scnprintf(buf + pos, bufsz - pos, "num of stations: %d\n\n",
243                         priv->num_stations);
244
245         for (i = 0; i < max_sta; i++) {
246                 station = &priv->stations[i];
247                 if (station->used) {
248                         pos += scnprintf(buf + pos, bufsz - pos,
249                                         "station %d:\ngeneral data:\n", i+1);
250                         pos += scnprintf(buf + pos, bufsz - pos, "id: %u\n",
251                                         station->sta.sta.sta_id);
252                         pos += scnprintf(buf + pos, bufsz - pos, "mode: %u\n",
253                                         station->sta.mode);
254                         pos += scnprintf(buf + pos, bufsz - pos,
255                                         "flags: 0x%x\n",
256                                         station->sta.station_flags_msk);
257                         pos += scnprintf(buf + pos, bufsz - pos,
258                                         "ps_status: %u\n", station->ps_status);
259                         pos += scnprintf(buf + pos, bufsz - pos, "tid data:\n");
260                         pos += scnprintf(buf + pos, bufsz - pos,
261                                         "seq_num\t\ttxq_id");
262                         pos += scnprintf(buf + pos, bufsz - pos,
263                                         "\tframe_count\twait_for_ba\t");
264                         pos += scnprintf(buf + pos, bufsz - pos,
265                                         "start_idx\tbitmap0\t");
266                         pos += scnprintf(buf + pos, bufsz - pos,
267                                         "bitmap1\trate_n_flags");
268                         pos += scnprintf(buf + pos, bufsz - pos, "\n");
269
270                         for (j = 0; j < MAX_TID_COUNT; j++) {
271                                 pos += scnprintf(buf + pos, bufsz - pos,
272                                                 "[%d]:\t\t%u", j,
273                                                 station->tid[j].seq_number);
274                                 pos += scnprintf(buf + pos, bufsz - pos,
275                                                 "\t%u\t\t%u\t\t%u\t\t",
276                                                 station->tid[j].agg.txq_id,
277                                                 station->tid[j].agg.frame_count,
278                                                 station->tid[j].agg.wait_for_ba);
279                                 pos += scnprintf(buf + pos, bufsz - pos,
280                                                 "%u\t%llu\t%u",
281                                                 station->tid[j].agg.start_idx,
282                                                 (unsigned long long)station->tid[j].agg.bitmap,
283                                                 station->tid[j].agg.rate_n_flags);
284                                 pos += scnprintf(buf + pos, bufsz - pos, "\n");
285                         }
286                         pos += scnprintf(buf + pos, bufsz - pos, "\n");
287                 }
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_nvm_read(struct file *file,
296                                        char __user *user_buf,
297                                        size_t count,
298                                        loff_t *ppos)
299 {
300         ssize_t ret;
301         struct iwl_priv *priv = (struct iwl_priv *)file->private_data;
302         int pos = 0, ofs = 0, buf_size = 0;
303         const u8 *ptr;
304         char *buf;
305         size_t eeprom_len = priv->cfg->eeprom_size;
306         buf_size = 4 * eeprom_len + 256;
307
308         if (eeprom_len % 16) {
309                 IWL_ERR(priv, "NVM size is not multiple of 16.\n");
310                 return -ENODATA;
311         }
312
313         /* 4 characters for byte 0xYY */
314         buf = kzalloc(buf_size, GFP_KERNEL);
315         if (!buf) {
316                 IWL_ERR(priv, "Can not allocate Buffer\n");
317                 return -ENOMEM;
318         }
319
320         ptr = priv->eeprom;
321         if (!ptr) {
322                 IWL_ERR(priv, "Invalid EEPROM/OTP memory\n");
323                 return -ENOMEM;
324         }
325         pos += scnprintf(buf + pos, buf_size - pos, "NVM Type: %s\n",
326                         (priv->nvm_device_type == NVM_DEVICE_TYPE_OTP)
327                         ? "OTP" : "EEPROM");
328         for (ofs = 0 ; ofs < eeprom_len ; ofs += 16) {
329                 pos += scnprintf(buf + pos, buf_size - pos, "0x%.4x ", ofs);
330                 hex_dump_to_buffer(ptr + ofs, 16 , 16, 2, buf + pos,
331                                    buf_size - pos, 0);
332                 pos += strlen(buf);
333                 if (buf_size - pos > 0)
334                         buf[pos++] = '\n';
335         }
336
337         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
338         kfree(buf);
339         return ret;
340 }
341
342 static ssize_t iwl_dbgfs_log_event_write(struct file *file,
343                                         const char __user *user_buf,
344                                         size_t count, loff_t *ppos)
345 {
346         struct iwl_priv *priv = file->private_data;
347         u32 event_log_flag;
348         char buf[8];
349         int buf_size;
350
351         memset(buf, 0, sizeof(buf));
352         buf_size = min(count, sizeof(buf) -  1);
353         if (copy_from_user(buf, user_buf, buf_size))
354                 return -EFAULT;
355         if (sscanf(buf, "%d", &event_log_flag) != 1)
356                 return -EFAULT;
357         if (event_log_flag == 1)
358                 iwl_dump_nic_event_log(priv);
359
360         return count;
361 }
362
363
364
365 static ssize_t iwl_dbgfs_channels_read(struct file *file, char __user *user_buf,
366                                        size_t count, loff_t *ppos)
367 {
368         struct iwl_priv *priv = (struct iwl_priv *)file->private_data;
369         struct ieee80211_channel *channels = NULL;
370         const struct ieee80211_supported_band *supp_band = NULL;
371         int pos = 0, i, bufsz = PAGE_SIZE;
372         char *buf;
373         ssize_t ret;
374
375         if (!test_bit(STATUS_GEO_CONFIGURED, &priv->status))
376                 return -EAGAIN;
377
378         buf = kzalloc(bufsz, GFP_KERNEL);
379         if (!buf) {
380                 IWL_ERR(priv, "Can not allocate Buffer\n");
381                 return -ENOMEM;
382         }
383
384         supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_2GHZ);
385         channels = supp_band->channels;
386
387         pos += scnprintf(buf + pos, bufsz - pos,
388                         "Displaying %d channels in 2.4GHz band 802.11bg):\n",
389                          supp_band->n_channels);
390
391         for (i = 0; i < supp_band->n_channels; i++)
392                 pos += scnprintf(buf + pos, bufsz - pos,
393                                 "%d: %ddBm: BSS%s%s, %s.\n",
394                                 ieee80211_frequency_to_channel(
395                                 channels[i].center_freq),
396                                 channels[i].max_power,
397                                 channels[i].flags & IEEE80211_CHAN_RADAR ?
398                                 " (IEEE 802.11h required)" : "",
399                                 ((channels[i].flags & IEEE80211_CHAN_NO_IBSS)
400                                 || (channels[i].flags &
401                                 IEEE80211_CHAN_RADAR)) ? "" :
402                                 ", IBSS",
403                                 channels[i].flags &
404                                 IEEE80211_CHAN_PASSIVE_SCAN ?
405                                 "passive only" : "active/passive");
406
407         supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_5GHZ);
408         channels = supp_band->channels;
409
410         pos += scnprintf(buf + pos, bufsz - pos,
411                         "Displaying %d channels in 5.2GHz band (802.11a)\n",
412                         supp_band->n_channels);
413
414         for (i = 0; i < supp_band->n_channels; i++)
415                 pos += scnprintf(buf + pos, bufsz - pos,
416                                 "%d: %ddBm: BSS%s%s, %s.\n",
417                                 ieee80211_frequency_to_channel(
418                                 channels[i].center_freq),
419                                 channels[i].max_power,
420                                 channels[i].flags & IEEE80211_CHAN_RADAR ?
421                                 " (IEEE 802.11h required)" : "",
422                                 ((channels[i].flags & IEEE80211_CHAN_NO_IBSS)
423                                 || (channels[i].flags &
424                                 IEEE80211_CHAN_RADAR)) ? "" :
425                                 ", IBSS",
426                                 channels[i].flags &
427                                 IEEE80211_CHAN_PASSIVE_SCAN ?
428                                 "passive only" : "active/passive");
429         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
430         kfree(buf);
431         return ret;
432 }
433
434 static ssize_t iwl_dbgfs_status_read(struct file *file,
435                                                 char __user *user_buf,
436                                                 size_t count, loff_t *ppos) {
437
438         struct iwl_priv *priv = (struct iwl_priv *)file->private_data;
439         char buf[512];
440         int pos = 0;
441         const size_t bufsz = sizeof(buf);
442
443         pos += scnprintf(buf + pos, bufsz - pos, "STATUS_HCMD_ACTIVE:\t %d\n",
444                 test_bit(STATUS_HCMD_ACTIVE, &priv->status));
445         pos += scnprintf(buf + pos, bufsz - pos, "STATUS_HCMD_SYNC_ACTIVE: %d\n",
446                 test_bit(STATUS_HCMD_SYNC_ACTIVE, &priv->status));
447         pos += scnprintf(buf + pos, bufsz - pos, "STATUS_INT_ENABLED:\t %d\n",
448                 test_bit(STATUS_INT_ENABLED, &priv->status));
449         pos += scnprintf(buf + pos, bufsz - pos, "STATUS_RF_KILL_HW:\t %d\n",
450                 test_bit(STATUS_RF_KILL_HW, &priv->status));
451         pos += scnprintf(buf + pos, bufsz - pos, "STATUS_RF_KILL_SW:\t %d\n",
452                 test_bit(STATUS_RF_KILL_SW, &priv->status));
453         pos += scnprintf(buf + pos, bufsz - pos, "STATUS_INIT:\t\t %d\n",
454                 test_bit(STATUS_INIT, &priv->status));
455         pos += scnprintf(buf + pos, bufsz - pos, "STATUS_ALIVE:\t\t %d\n",
456                 test_bit(STATUS_ALIVE, &priv->status));
457         pos += scnprintf(buf + pos, bufsz - pos, "STATUS_READY:\t\t %d\n",
458                 test_bit(STATUS_READY, &priv->status));
459         pos += scnprintf(buf + pos, bufsz - pos, "STATUS_TEMPERATURE:\t %d\n",
460                 test_bit(STATUS_TEMPERATURE, &priv->status));
461         pos += scnprintf(buf + pos, bufsz - pos, "STATUS_GEO_CONFIGURED:\t %d\n",
462                 test_bit(STATUS_GEO_CONFIGURED, &priv->status));
463         pos += scnprintf(buf + pos, bufsz - pos, "STATUS_EXIT_PENDING:\t %d\n",
464                 test_bit(STATUS_EXIT_PENDING, &priv->status));
465         pos += scnprintf(buf + pos, bufsz - pos, "STATUS_STATISTICS:\t %d\n",
466                 test_bit(STATUS_STATISTICS, &priv->status));
467         pos += scnprintf(buf + pos, bufsz - pos, "STATUS_SCANNING:\t %d\n",
468                 test_bit(STATUS_SCANNING, &priv->status));
469         pos += scnprintf(buf + pos, bufsz - pos, "STATUS_SCAN_ABORTING:\t %d\n",
470                 test_bit(STATUS_SCAN_ABORTING, &priv->status));
471         pos += scnprintf(buf + pos, bufsz - pos, "STATUS_SCAN_HW:\t\t %d\n",
472                 test_bit(STATUS_SCAN_HW, &priv->status));
473         pos += scnprintf(buf + pos, bufsz - pos, "STATUS_POWER_PMI:\t %d\n",
474                 test_bit(STATUS_POWER_PMI, &priv->status));
475         pos += scnprintf(buf + pos, bufsz - pos, "STATUS_FW_ERROR:\t %d\n",
476                 test_bit(STATUS_FW_ERROR, &priv->status));
477         pos += scnprintf(buf + pos, bufsz - pos, "STATUS_MODE_PENDING:\t %d\n",
478                 test_bit(STATUS_MODE_PENDING, &priv->status));
479         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
480 }
481
482 static ssize_t iwl_dbgfs_interrupt_read(struct file *file,
483                                         char __user *user_buf,
484                                         size_t count, loff_t *ppos) {
485
486         struct iwl_priv *priv = (struct iwl_priv *)file->private_data;
487         int pos = 0;
488         int cnt = 0;
489         char *buf;
490         int bufsz = 24 * 64; /* 24 items * 64 char per item */
491         ssize_t ret;
492
493         buf = kzalloc(bufsz, GFP_KERNEL);
494         if (!buf) {
495                 IWL_ERR(priv, "Can not allocate Buffer\n");
496                 return -ENOMEM;
497         }
498
499         pos += scnprintf(buf + pos, bufsz - pos,
500                         "Interrupt Statistics Report:\n");
501
502         pos += scnprintf(buf + pos, bufsz - pos, "HW Error:\t\t\t %u\n",
503                 priv->isr_stats.hw);
504         pos += scnprintf(buf + pos, bufsz - pos, "SW Error:\t\t\t %u\n",
505                 priv->isr_stats.sw);
506         if (priv->isr_stats.sw > 0) {
507                 pos += scnprintf(buf + pos, bufsz - pos,
508                         "\tLast Restarting Code:  0x%X\n",
509                         priv->isr_stats.sw_err);
510         }
511 #ifdef CONFIG_IWLWIFI_DEBUG
512         pos += scnprintf(buf + pos, bufsz - pos, "Frame transmitted:\t\t %u\n",
513                 priv->isr_stats.sch);
514         pos += scnprintf(buf + pos, bufsz - pos, "Alive interrupt:\t\t %u\n",
515                 priv->isr_stats.alive);
516 #endif
517         pos += scnprintf(buf + pos, bufsz - pos,
518                 "HW RF KILL switch toggled:\t %u\n",
519                 priv->isr_stats.rfkill);
520
521         pos += scnprintf(buf + pos, bufsz - pos, "CT KILL:\t\t\t %u\n",
522                 priv->isr_stats.ctkill);
523
524         pos += scnprintf(buf + pos, bufsz - pos, "Wakeup Interrupt:\t\t %u\n",
525                 priv->isr_stats.wakeup);
526
527         pos += scnprintf(buf + pos, bufsz - pos,
528                 "Rx command responses:\t\t %u\n",
529                 priv->isr_stats.rx);
530         for (cnt = 0; cnt < REPLY_MAX; cnt++) {
531                 if (priv->isr_stats.rx_handlers[cnt] > 0)
532                         pos += scnprintf(buf + pos, bufsz - pos,
533                                 "\tRx handler[%36s]:\t\t %u\n",
534                                 get_cmd_string(cnt),
535                                 priv->isr_stats.rx_handlers[cnt]);
536         }
537
538         pos += scnprintf(buf + pos, bufsz - pos, "Tx/FH interrupt:\t\t %u\n",
539                 priv->isr_stats.tx);
540
541         pos += scnprintf(buf + pos, bufsz - pos, "Unexpected INTA:\t\t %u\n",
542                 priv->isr_stats.unhandled);
543
544         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
545         kfree(buf);
546         return ret;
547 }
548
549 static ssize_t iwl_dbgfs_interrupt_write(struct file *file,
550                                          const char __user *user_buf,
551                                          size_t count, loff_t *ppos)
552 {
553         struct iwl_priv *priv = file->private_data;
554         char buf[8];
555         int buf_size;
556         u32 reset_flag;
557
558         memset(buf, 0, sizeof(buf));
559         buf_size = min(count, sizeof(buf) -  1);
560         if (copy_from_user(buf, user_buf, buf_size))
561                 return -EFAULT;
562         if (sscanf(buf, "%x", &reset_flag) != 1)
563                 return -EFAULT;
564         if (reset_flag == 0)
565                 iwl_clear_isr_stats(priv);
566
567         return count;
568 }
569
570
571 DEBUGFS_READ_WRITE_FILE_OPS(sram);
572 DEBUGFS_WRITE_FILE_OPS(log_event);
573 DEBUGFS_READ_FILE_OPS(nvm);
574 DEBUGFS_READ_FILE_OPS(stations);
575 DEBUGFS_READ_FILE_OPS(rx_statistics);
576 DEBUGFS_READ_FILE_OPS(tx_statistics);
577 DEBUGFS_READ_FILE_OPS(channels);
578 DEBUGFS_READ_FILE_OPS(status);
579 DEBUGFS_READ_WRITE_FILE_OPS(interrupt);
580
581 /*
582  * Create the debugfs files and directories
583  *
584  */
585 int iwl_dbgfs_register(struct iwl_priv *priv, const char *name)
586 {
587         struct iwl_debugfs *dbgfs;
588         struct dentry *phyd = priv->hw->wiphy->debugfsdir;
589         int ret = 0;
590
591         dbgfs = kzalloc(sizeof(struct iwl_debugfs), GFP_KERNEL);
592         if (!dbgfs) {
593                 ret = -ENOMEM;
594                 goto err;
595         }
596
597         priv->dbgfs = dbgfs;
598         dbgfs->name = name;
599         dbgfs->dir_drv = debugfs_create_dir(name, phyd);
600         if (!dbgfs->dir_drv || IS_ERR(dbgfs->dir_drv)) {
601                 ret = -ENOENT;
602                 goto err;
603         }
604
605         DEBUGFS_ADD_DIR(data, dbgfs->dir_drv);
606         DEBUGFS_ADD_DIR(rf, dbgfs->dir_drv);
607         DEBUGFS_ADD_FILE(nvm, data);
608         DEBUGFS_ADD_FILE(sram, data);
609         DEBUGFS_ADD_FILE(log_event, data);
610         DEBUGFS_ADD_FILE(stations, data);
611         DEBUGFS_ADD_FILE(rx_statistics, data);
612         DEBUGFS_ADD_FILE(tx_statistics, data);
613         DEBUGFS_ADD_FILE(channels, data);
614         DEBUGFS_ADD_FILE(status, data);
615         DEBUGFS_ADD_FILE(interrupt, data);
616         DEBUGFS_ADD_BOOL(disable_sensitivity, rf, &priv->disable_sens_cal);
617         DEBUGFS_ADD_BOOL(disable_chain_noise, rf,
618                          &priv->disable_chain_noise_cal);
619         DEBUGFS_ADD_BOOL(disable_tx_power, rf, &priv->disable_tx_power_cal);
620         return 0;
621
622 err:
623         IWL_ERR(priv, "Can't open the debugfs directory\n");
624         iwl_dbgfs_unregister(priv);
625         return ret;
626 }
627 EXPORT_SYMBOL(iwl_dbgfs_register);
628
629 /**
630  * Remove the debugfs files and directories
631  *
632  */
633 void iwl_dbgfs_unregister(struct iwl_priv *priv)
634 {
635         if (!priv->dbgfs)
636                 return;
637
638         DEBUGFS_REMOVE(priv->dbgfs->dbgfs_data_files.file_nvm);
639         DEBUGFS_REMOVE(priv->dbgfs->dbgfs_data_files.file_rx_statistics);
640         DEBUGFS_REMOVE(priv->dbgfs->dbgfs_data_files.file_tx_statistics);
641         DEBUGFS_REMOVE(priv->dbgfs->dbgfs_data_files.file_sram);
642         DEBUGFS_REMOVE(priv->dbgfs->dbgfs_data_files.file_log_event);
643         DEBUGFS_REMOVE(priv->dbgfs->dbgfs_data_files.file_stations);
644         DEBUGFS_REMOVE(priv->dbgfs->dbgfs_data_files.file_channels);
645         DEBUGFS_REMOVE(priv->dbgfs->dbgfs_data_files.file_status);
646         DEBUGFS_REMOVE(priv->dbgfs->dbgfs_data_files.file_interrupt);
647         DEBUGFS_REMOVE(priv->dbgfs->dir_data);
648         DEBUGFS_REMOVE(priv->dbgfs->dbgfs_rf_files.file_disable_sensitivity);
649         DEBUGFS_REMOVE(priv->dbgfs->dbgfs_rf_files.file_disable_chain_noise);
650         DEBUGFS_REMOVE(priv->dbgfs->dbgfs_rf_files.file_disable_tx_power);
651         DEBUGFS_REMOVE(priv->dbgfs->dir_rf);
652         DEBUGFS_REMOVE(priv->dbgfs->dir_drv);
653         kfree(priv->dbgfs);
654         priv->dbgfs = NULL;
655 }
656 EXPORT_SYMBOL(iwl_dbgfs_unregister);
657
658
659