iwlwifi: check for valid band for channel info
[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         for (i = priv->dbgfs->sram_len; i > 0; i -= 4) {
176                 val = iwl_read_targ_mem(priv, priv->dbgfs->sram_offset + \
177                                         priv->dbgfs->sram_len - i);
178                 if (i < 4) {
179                         switch (i) {
180                         case 1:
181                                 val &= BYTE1_MASK;
182                                 break;
183                         case 2:
184                                 val &= BYTE2_MASK;
185                                 break;
186                         case 3:
187                                 val &= BYTE3_MASK;
188                                 break;
189                         }
190                 }
191                 pos += scnprintf(buf + pos, bufsz - pos, "0x%08x ", val);
192         }
193         pos += scnprintf(buf + pos, bufsz - pos, "\n");
194
195         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
196         return ret;
197 }
198
199 static ssize_t iwl_dbgfs_sram_write(struct file *file,
200                                         const char __user *user_buf,
201                                         size_t count, loff_t *ppos)
202 {
203         struct iwl_priv *priv = file->private_data;
204         char buf[64];
205         int buf_size;
206         u32 offset, len;
207
208         memset(buf, 0, sizeof(buf));
209         buf_size = min(count, sizeof(buf) -  1);
210         if (copy_from_user(buf, user_buf, buf_size))
211                 return -EFAULT;
212
213         if (sscanf(buf, "%x,%x", &offset, &len) == 2) {
214                 priv->dbgfs->sram_offset = offset;
215                 priv->dbgfs->sram_len = len;
216         } else {
217                 priv->dbgfs->sram_offset = 0;
218                 priv->dbgfs->sram_len = 0;
219         }
220
221         return count;
222 }
223
224 static ssize_t iwl_dbgfs_stations_read(struct file *file, char __user *user_buf,
225                                         size_t count, loff_t *ppos)
226 {
227         struct iwl_priv *priv = (struct iwl_priv *)file->private_data;
228         struct iwl_station_entry *station;
229         int max_sta = priv->hw_params.max_stations;
230         char *buf;
231         int i, j, pos = 0;
232         ssize_t ret;
233         /* Add 30 for initial string */
234         const size_t bufsz = 30 + sizeof(char) * 500 * (priv->num_stations);
235
236         buf = kmalloc(bufsz, GFP_KERNEL);
237         if (!buf)
238                 return -ENOMEM;
239
240         pos += scnprintf(buf + pos, bufsz - pos, "num of stations: %d\n\n",
241                         priv->num_stations);
242
243         for (i = 0; i < max_sta; i++) {
244                 station = &priv->stations[i];
245                 if (station->used) {
246                         pos += scnprintf(buf + pos, bufsz - pos,
247                                         "station %d:\ngeneral data:\n", i+1);
248                         pos += scnprintf(buf + pos, bufsz - pos, "id: %u\n",
249                                         station->sta.sta.sta_id);
250                         pos += scnprintf(buf + pos, bufsz - pos, "mode: %u\n",
251                                         station->sta.mode);
252                         pos += scnprintf(buf + pos, bufsz - pos,
253                                         "flags: 0x%x\n",
254                                         station->sta.station_flags_msk);
255                         pos += scnprintf(buf + pos, bufsz - pos,
256                                         "ps_status: %u\n", station->ps_status);
257                         pos += scnprintf(buf + pos, bufsz - pos, "tid data:\n");
258                         pos += scnprintf(buf + pos, bufsz - pos,
259                                         "seq_num\t\ttxq_id");
260                         pos += scnprintf(buf + pos, bufsz - pos,
261                                         "\tframe_count\twait_for_ba\t");
262                         pos += scnprintf(buf + pos, bufsz - pos,
263                                         "start_idx\tbitmap0\t");
264                         pos += scnprintf(buf + pos, bufsz - pos,
265                                         "bitmap1\trate_n_flags");
266                         pos += scnprintf(buf + pos, bufsz - pos, "\n");
267
268                         for (j = 0; j < MAX_TID_COUNT; j++) {
269                                 pos += scnprintf(buf + pos, bufsz - pos,
270                                                 "[%d]:\t\t%u", j,
271                                                 station->tid[j].seq_number);
272                                 pos += scnprintf(buf + pos, bufsz - pos,
273                                                 "\t%u\t\t%u\t\t%u\t\t",
274                                                 station->tid[j].agg.txq_id,
275                                                 station->tid[j].agg.frame_count,
276                                                 station->tid[j].agg.wait_for_ba);
277                                 pos += scnprintf(buf + pos, bufsz - pos,
278                                                 "%u\t%llu\t%u",
279                                                 station->tid[j].agg.start_idx,
280                                                 (unsigned long long)station->tid[j].agg.bitmap,
281                                                 station->tid[j].agg.rate_n_flags);
282                                 pos += scnprintf(buf + pos, bufsz - pos, "\n");
283                         }
284                         pos += scnprintf(buf + pos, bufsz - pos, "\n");
285                 }
286         }
287
288         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
289         kfree(buf);
290         return ret;
291 }
292
293 static ssize_t iwl_dbgfs_nvm_read(struct file *file,
294                                        char __user *user_buf,
295                                        size_t count,
296                                        loff_t *ppos)
297 {
298         ssize_t ret;
299         struct iwl_priv *priv = (struct iwl_priv *)file->private_data;
300         int pos = 0, ofs = 0, buf_size = 0;
301         const u8 *ptr;
302         char *buf;
303         size_t eeprom_len = priv->cfg->eeprom_size;
304         buf_size = 4 * eeprom_len + 256;
305
306         if (eeprom_len % 16) {
307                 IWL_ERR(priv, "NVM size is not multiple of 16.\n");
308                 return -ENODATA;
309         }
310
311         /* 4 characters for byte 0xYY */
312         buf = kzalloc(buf_size, GFP_KERNEL);
313         if (!buf) {
314                 IWL_ERR(priv, "Can not allocate Buffer\n");
315                 return -ENOMEM;
316         }
317
318         ptr = priv->eeprom;
319         if (!ptr) {
320                 IWL_ERR(priv, "Invalid EEPROM/OTP memory\n");
321                 return -ENOMEM;
322         }
323         pos += scnprintf(buf + pos, buf_size - pos, "NVM Type: %s\n",
324                         (priv->nvm_device_type == NVM_DEVICE_TYPE_OTP)
325                         ? "OTP" : "EEPROM");
326         for (ofs = 0 ; ofs < eeprom_len ; ofs += 16) {
327                 pos += scnprintf(buf + pos, buf_size - pos, "0x%.4x ", ofs);
328                 hex_dump_to_buffer(ptr + ofs, 16 , 16, 2, buf + pos,
329                                    buf_size - pos, 0);
330                 pos += strlen(buf);
331                 if (buf_size - pos > 0)
332                         buf[pos++] = '\n';
333         }
334
335         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
336         kfree(buf);
337         return ret;
338 }
339
340 static ssize_t iwl_dbgfs_log_event_write(struct file *file,
341                                         const char __user *user_buf,
342                                         size_t count, loff_t *ppos)
343 {
344         struct iwl_priv *priv = file->private_data;
345         u32 event_log_flag;
346         char buf[8];
347         int buf_size;
348
349         memset(buf, 0, sizeof(buf));
350         buf_size = min(count, sizeof(buf) -  1);
351         if (copy_from_user(buf, user_buf, buf_size))
352                 return -EFAULT;
353         if (sscanf(buf, "%d", &event_log_flag) != 1)
354                 return -EFAULT;
355         if (event_log_flag == 1)
356                 iwl_dump_nic_event_log(priv);
357
358         return count;
359 }
360
361
362
363 static ssize_t iwl_dbgfs_channels_read(struct file *file, char __user *user_buf,
364                                        size_t count, loff_t *ppos)
365 {
366         struct iwl_priv *priv = (struct iwl_priv *)file->private_data;
367         struct ieee80211_channel *channels = NULL;
368         const struct ieee80211_supported_band *supp_band = NULL;
369         int pos = 0, i, bufsz = PAGE_SIZE;
370         char *buf;
371         ssize_t ret;
372
373         if (!test_bit(STATUS_GEO_CONFIGURED, &priv->status))
374                 return -EAGAIN;
375
376         buf = kzalloc(bufsz, GFP_KERNEL);
377         if (!buf) {
378                 IWL_ERR(priv, "Can not allocate Buffer\n");
379                 return -ENOMEM;
380         }
381
382         supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_2GHZ);
383         if (supp_band) {
384                 channels = supp_band->channels;
385
386                 pos += scnprintf(buf + pos, bufsz - pos,
387                                 "Displaying %d channels in 2.4GHz band 802.11bg):\n",
388                                 supp_band->n_channels);
389
390                 for (i = 0; i < supp_band->n_channels; i++)
391                         pos += scnprintf(buf + pos, bufsz - pos,
392                                         "%d: %ddBm: BSS%s%s, %s.\n",
393                                         ieee80211_frequency_to_channel(
394                                         channels[i].center_freq),
395                                         channels[i].max_power,
396                                         channels[i].flags & IEEE80211_CHAN_RADAR ?
397                                         " (IEEE 802.11h required)" : "",
398                                         ((channels[i].flags & IEEE80211_CHAN_NO_IBSS)
399                                         || (channels[i].flags &
400                                         IEEE80211_CHAN_RADAR)) ? "" :
401                                         ", IBSS",
402                                         channels[i].flags &
403                                         IEEE80211_CHAN_PASSIVE_SCAN ?
404                                         "passive only" : "active/passive");
405         }
406         supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_5GHZ);
407         if (supp_band) {
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         }
430         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
431         kfree(buf);
432         return ret;
433 }
434
435 static ssize_t iwl_dbgfs_status_read(struct file *file,
436                                                 char __user *user_buf,
437                                                 size_t count, loff_t *ppos) {
438
439         struct iwl_priv *priv = (struct iwl_priv *)file->private_data;
440         char buf[512];
441         int pos = 0;
442         const size_t bufsz = sizeof(buf);
443
444         pos += scnprintf(buf + pos, bufsz - pos, "STATUS_HCMD_ACTIVE:\t %d\n",
445                 test_bit(STATUS_HCMD_ACTIVE, &priv->status));
446         pos += scnprintf(buf + pos, bufsz - pos, "STATUS_HCMD_SYNC_ACTIVE: %d\n",
447                 test_bit(STATUS_HCMD_SYNC_ACTIVE, &priv->status));
448         pos += scnprintf(buf + pos, bufsz - pos, "STATUS_INT_ENABLED:\t %d\n",
449                 test_bit(STATUS_INT_ENABLED, &priv->status));
450         pos += scnprintf(buf + pos, bufsz - pos, "STATUS_RF_KILL_HW:\t %d\n",
451                 test_bit(STATUS_RF_KILL_HW, &priv->status));
452         pos += scnprintf(buf + pos, bufsz - pos, "STATUS_RF_KILL_SW:\t %d\n",
453                 test_bit(STATUS_RF_KILL_SW, &priv->status));
454         pos += scnprintf(buf + pos, bufsz - pos, "STATUS_INIT:\t\t %d\n",
455                 test_bit(STATUS_INIT, &priv->status));
456         pos += scnprintf(buf + pos, bufsz - pos, "STATUS_ALIVE:\t\t %d\n",
457                 test_bit(STATUS_ALIVE, &priv->status));
458         pos += scnprintf(buf + pos, bufsz - pos, "STATUS_READY:\t\t %d\n",
459                 test_bit(STATUS_READY, &priv->status));
460         pos += scnprintf(buf + pos, bufsz - pos, "STATUS_TEMPERATURE:\t %d\n",
461                 test_bit(STATUS_TEMPERATURE, &priv->status));
462         pos += scnprintf(buf + pos, bufsz - pos, "STATUS_GEO_CONFIGURED:\t %d\n",
463                 test_bit(STATUS_GEO_CONFIGURED, &priv->status));
464         pos += scnprintf(buf + pos, bufsz - pos, "STATUS_EXIT_PENDING:\t %d\n",
465                 test_bit(STATUS_EXIT_PENDING, &priv->status));
466         pos += scnprintf(buf + pos, bufsz - pos, "STATUS_STATISTICS:\t %d\n",
467                 test_bit(STATUS_STATISTICS, &priv->status));
468         pos += scnprintf(buf + pos, bufsz - pos, "STATUS_SCANNING:\t %d\n",
469                 test_bit(STATUS_SCANNING, &priv->status));
470         pos += scnprintf(buf + pos, bufsz - pos, "STATUS_SCAN_ABORTING:\t %d\n",
471                 test_bit(STATUS_SCAN_ABORTING, &priv->status));
472         pos += scnprintf(buf + pos, bufsz - pos, "STATUS_SCAN_HW:\t\t %d\n",
473                 test_bit(STATUS_SCAN_HW, &priv->status));
474         pos += scnprintf(buf + pos, bufsz - pos, "STATUS_POWER_PMI:\t %d\n",
475                 test_bit(STATUS_POWER_PMI, &priv->status));
476         pos += scnprintf(buf + pos, bufsz - pos, "STATUS_FW_ERROR:\t %d\n",
477                 test_bit(STATUS_FW_ERROR, &priv->status));
478         pos += scnprintf(buf + pos, bufsz - pos, "STATUS_MODE_PENDING:\t %d\n",
479                 test_bit(STATUS_MODE_PENDING, &priv->status));
480         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
481 }
482
483 static ssize_t iwl_dbgfs_interrupt_read(struct file *file,
484                                         char __user *user_buf,
485                                         size_t count, loff_t *ppos) {
486
487         struct iwl_priv *priv = (struct iwl_priv *)file->private_data;
488         int pos = 0;
489         int cnt = 0;
490         char *buf;
491         int bufsz = 24 * 64; /* 24 items * 64 char per item */
492         ssize_t ret;
493
494         buf = kzalloc(bufsz, GFP_KERNEL);
495         if (!buf) {
496                 IWL_ERR(priv, "Can not allocate Buffer\n");
497                 return -ENOMEM;
498         }
499
500         pos += scnprintf(buf + pos, bufsz - pos,
501                         "Interrupt Statistics Report:\n");
502
503         pos += scnprintf(buf + pos, bufsz - pos, "HW Error:\t\t\t %u\n",
504                 priv->isr_stats.hw);
505         pos += scnprintf(buf + pos, bufsz - pos, "SW Error:\t\t\t %u\n",
506                 priv->isr_stats.sw);
507         if (priv->isr_stats.sw > 0) {
508                 pos += scnprintf(buf + pos, bufsz - pos,
509                         "\tLast Restarting Code:  0x%X\n",
510                         priv->isr_stats.sw_err);
511         }
512 #ifdef CONFIG_IWLWIFI_DEBUG
513         pos += scnprintf(buf + pos, bufsz - pos, "Frame transmitted:\t\t %u\n",
514                 priv->isr_stats.sch);
515         pos += scnprintf(buf + pos, bufsz - pos, "Alive interrupt:\t\t %u\n",
516                 priv->isr_stats.alive);
517 #endif
518         pos += scnprintf(buf + pos, bufsz - pos,
519                 "HW RF KILL switch toggled:\t %u\n",
520                 priv->isr_stats.rfkill);
521
522         pos += scnprintf(buf + pos, bufsz - pos, "CT KILL:\t\t\t %u\n",
523                 priv->isr_stats.ctkill);
524
525         pos += scnprintf(buf + pos, bufsz - pos, "Wakeup Interrupt:\t\t %u\n",
526                 priv->isr_stats.wakeup);
527
528         pos += scnprintf(buf + pos, bufsz - pos,
529                 "Rx command responses:\t\t %u\n",
530                 priv->isr_stats.rx);
531         for (cnt = 0; cnt < REPLY_MAX; cnt++) {
532                 if (priv->isr_stats.rx_handlers[cnt] > 0)
533                         pos += scnprintf(buf + pos, bufsz - pos,
534                                 "\tRx handler[%36s]:\t\t %u\n",
535                                 get_cmd_string(cnt),
536                                 priv->isr_stats.rx_handlers[cnt]);
537         }
538
539         pos += scnprintf(buf + pos, bufsz - pos, "Tx/FH interrupt:\t\t %u\n",
540                 priv->isr_stats.tx);
541
542         pos += scnprintf(buf + pos, bufsz - pos, "Unexpected INTA:\t\t %u\n",
543                 priv->isr_stats.unhandled);
544
545         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
546         kfree(buf);
547         return ret;
548 }
549
550 static ssize_t iwl_dbgfs_interrupt_write(struct file *file,
551                                          const char __user *user_buf,
552                                          size_t count, loff_t *ppos)
553 {
554         struct iwl_priv *priv = file->private_data;
555         char buf[8];
556         int buf_size;
557         u32 reset_flag;
558
559         memset(buf, 0, sizeof(buf));
560         buf_size = min(count, sizeof(buf) -  1);
561         if (copy_from_user(buf, user_buf, buf_size))
562                 return -EFAULT;
563         if (sscanf(buf, "%x", &reset_flag) != 1)
564                 return -EFAULT;
565         if (reset_flag == 0)
566                 iwl_clear_isr_stats(priv);
567
568         return count;
569 }
570
571
572 DEBUGFS_READ_WRITE_FILE_OPS(sram);
573 DEBUGFS_WRITE_FILE_OPS(log_event);
574 DEBUGFS_READ_FILE_OPS(nvm);
575 DEBUGFS_READ_FILE_OPS(stations);
576 DEBUGFS_READ_FILE_OPS(rx_statistics);
577 DEBUGFS_READ_FILE_OPS(tx_statistics);
578 DEBUGFS_READ_FILE_OPS(channels);
579 DEBUGFS_READ_FILE_OPS(status);
580 DEBUGFS_READ_WRITE_FILE_OPS(interrupt);
581
582 /*
583  * Create the debugfs files and directories
584  *
585  */
586 int iwl_dbgfs_register(struct iwl_priv *priv, const char *name)
587 {
588         struct iwl_debugfs *dbgfs;
589         struct dentry *phyd = priv->hw->wiphy->debugfsdir;
590         int ret = 0;
591
592         dbgfs = kzalloc(sizeof(struct iwl_debugfs), GFP_KERNEL);
593         if (!dbgfs) {
594                 ret = -ENOMEM;
595                 goto err;
596         }
597
598         priv->dbgfs = dbgfs;
599         dbgfs->name = name;
600         dbgfs->dir_drv = debugfs_create_dir(name, phyd);
601         if (!dbgfs->dir_drv || IS_ERR(dbgfs->dir_drv)) {
602                 ret = -ENOENT;
603                 goto err;
604         }
605
606         DEBUGFS_ADD_DIR(data, dbgfs->dir_drv);
607         DEBUGFS_ADD_DIR(rf, dbgfs->dir_drv);
608         DEBUGFS_ADD_FILE(nvm, data);
609         DEBUGFS_ADD_FILE(sram, data);
610         DEBUGFS_ADD_FILE(log_event, data);
611         DEBUGFS_ADD_FILE(stations, data);
612         DEBUGFS_ADD_FILE(rx_statistics, data);
613         DEBUGFS_ADD_FILE(tx_statistics, data);
614         DEBUGFS_ADD_FILE(channels, data);
615         DEBUGFS_ADD_FILE(status, data);
616         DEBUGFS_ADD_FILE(interrupt, data);
617         DEBUGFS_ADD_BOOL(disable_sensitivity, rf, &priv->disable_sens_cal);
618         DEBUGFS_ADD_BOOL(disable_chain_noise, rf,
619                          &priv->disable_chain_noise_cal);
620         DEBUGFS_ADD_BOOL(disable_tx_power, rf, &priv->disable_tx_power_cal);
621         return 0;
622
623 err:
624         IWL_ERR(priv, "Can't open the debugfs directory\n");
625         iwl_dbgfs_unregister(priv);
626         return ret;
627 }
628 EXPORT_SYMBOL(iwl_dbgfs_register);
629
630 /**
631  * Remove the debugfs files and directories
632  *
633  */
634 void iwl_dbgfs_unregister(struct iwl_priv *priv)
635 {
636         if (!priv->dbgfs)
637                 return;
638
639         DEBUGFS_REMOVE(priv->dbgfs->dbgfs_data_files.file_nvm);
640         DEBUGFS_REMOVE(priv->dbgfs->dbgfs_data_files.file_rx_statistics);
641         DEBUGFS_REMOVE(priv->dbgfs->dbgfs_data_files.file_tx_statistics);
642         DEBUGFS_REMOVE(priv->dbgfs->dbgfs_data_files.file_sram);
643         DEBUGFS_REMOVE(priv->dbgfs->dbgfs_data_files.file_log_event);
644         DEBUGFS_REMOVE(priv->dbgfs->dbgfs_data_files.file_stations);
645         DEBUGFS_REMOVE(priv->dbgfs->dbgfs_data_files.file_channels);
646         DEBUGFS_REMOVE(priv->dbgfs->dbgfs_data_files.file_status);
647         DEBUGFS_REMOVE(priv->dbgfs->dbgfs_data_files.file_interrupt);
648         DEBUGFS_REMOVE(priv->dbgfs->dir_data);
649         DEBUGFS_REMOVE(priv->dbgfs->dbgfs_rf_files.file_disable_sensitivity);
650         DEBUGFS_REMOVE(priv->dbgfs->dbgfs_rf_files.file_disable_chain_noise);
651         DEBUGFS_REMOVE(priv->dbgfs->dbgfs_rf_files.file_disable_tx_power);
652         DEBUGFS_REMOVE(priv->dbgfs->dir_rf);
653         DEBUGFS_REMOVE(priv->dbgfs->dir_drv);
654         kfree(priv->dbgfs);
655         priv->dbgfs = NULL;
656 }
657 EXPORT_SYMBOL(iwl_dbgfs_unregister);
658
659
660