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added 2.6.29.6 aldebaran kernel
[nao-ulib.git] / kernel / 2.6.29.6-aldebaran-rt / drivers / net / wireless / iwlwifi / iwl-debugfs.c
blobd5253a179dec6fd35cd37a4d9687046899ca782a
1 /******************************************************************************
2 *
3 * GPL LICENSE SUMMARY
4 *
5 * Copyright(c) 2008 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_REMOVE(name) do { \
67 debugfs_remove(name); \
68 name = NULL; \
69 } while (0);
70
71 /* file operation */
72 #define DEBUGFS_READ_FUNC(name) \
73 static ssize_t iwl_dbgfs_##name##_read(struct file *file, \
74 char __user *user_buf, \
75 size_t count, loff_t *ppos);
76
77 #define DEBUGFS_WRITE_FUNC(name) \
78 static ssize_t iwl_dbgfs_##name##_write(struct file *file, \
79 const char __user *user_buf, \
80 size_t count, loff_t *ppos);
81
82
83 static int iwl_dbgfs_open_file_generic(struct inode *inode, struct file *file)
84 {
85 file->private_data = inode->i_private;
86 return 0;
87 }
88
89 #define DEBUGFS_READ_FILE_OPS(name) \
90 DEBUGFS_READ_FUNC(name); \
91 static const struct file_operations iwl_dbgfs_##name##_ops = { \
92 .read = iwl_dbgfs_##name##_read, \
93 .open = iwl_dbgfs_open_file_generic, \
94 };
95
96 #define DEBUGFS_WRITE_FILE_OPS(name) \
97 DEBUGFS_WRITE_FUNC(name); \
98 static const struct file_operations iwl_dbgfs_##name##_ops = { \
99 .write = iwl_dbgfs_##name##_write, \
100 .open = iwl_dbgfs_open_file_generic, \
101 };
102
103
104 #define DEBUGFS_READ_WRITE_FILE_OPS(name) \
105 DEBUGFS_READ_FUNC(name); \
106 DEBUGFS_WRITE_FUNC(name); \
107 static const struct file_operations iwl_dbgfs_##name##_ops = { \
108 .write = iwl_dbgfs_##name##_write, \
109 .read = iwl_dbgfs_##name##_read, \
110 .open = iwl_dbgfs_open_file_generic, \
111 };
112
113
114 static ssize_t iwl_dbgfs_tx_statistics_read(struct file *file,
115 char __user *user_buf,
116 size_t count, loff_t *ppos) {
117
118 struct iwl_priv *priv = (struct iwl_priv *)file->private_data;
119 char buf[256];
120 int pos = 0;
121 const size_t bufsz = sizeof(buf);
122
123 pos += scnprintf(buf + pos, bufsz - pos, "mgmt: %u\n",
124 priv->tx_stats[0].cnt);
125 pos += scnprintf(buf + pos, bufsz - pos, "ctrl: %u\n",
126 priv->tx_stats[1].cnt);
127 pos += scnprintf(buf + pos, bufsz - pos, "data: %u\n",
128 priv->tx_stats[2].cnt);
129
130 return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
131 }
132
133 static ssize_t iwl_dbgfs_rx_statistics_read(struct file *file,
134 char __user *user_buf,
135 size_t count, loff_t *ppos) {
136
137 struct iwl_priv *priv = (struct iwl_priv *)file->private_data;
138 char buf[256];
139 int pos = 0;
140 const size_t bufsz = sizeof(buf);
141
142 pos += scnprintf(buf + pos, bufsz - pos, "mgmt: %u\n",
143 priv->rx_stats[0].cnt);
144 pos += scnprintf(buf + pos, bufsz - pos, "ctrl: %u\n",
145 priv->rx_stats[1].cnt);
146 pos += scnprintf(buf + pos, bufsz - pos, "data: %u\n",
147 priv->rx_stats[2].cnt);
148
149 return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
150 }
151
152 #define BYTE1_MASK 0x000000ff;
153 #define BYTE2_MASK 0x0000ffff;
154 #define BYTE3_MASK 0x00ffffff;
155 static ssize_t iwl_dbgfs_sram_read(struct file *file,
156 char __user *user_buf,
157 size_t count, loff_t *ppos)
158 {
159 u32 val;
160 char buf[1024];
161 ssize_t ret;
162 int i;
163 int pos = 0;
164 struct iwl_priv *priv = (struct iwl_priv *)file->private_data;
165 const size_t bufsz = sizeof(buf);
166
167 printk(KERN_DEBUG "offset is: 0x%x\tlen is: 0x%x\n",
168 priv->dbgfs->sram_offset, priv->dbgfs->sram_len);
169
170 iwl_grab_nic_access(priv);
171 for (i = priv->dbgfs->sram_len; i > 0; i -= 4) {
172 val = iwl_read_targ_mem(priv, priv->dbgfs->sram_offset + \
173 priv->dbgfs->sram_len - i);
174 if (i < 4) {
175 switch (i) {
176 case 1:
177 val &= BYTE1_MASK;
178 break;
179 case 2:
180 val &= BYTE2_MASK;
181 break;
182 case 3:
183 val &= BYTE3_MASK;
184 break;
185 }
186 }
187 pos += scnprintf(buf + pos, bufsz - pos, "0x%08x ", val);
188 }
189 pos += scnprintf(buf + pos, bufsz - pos, "\n");
190 iwl_release_nic_access(priv);
191
192 ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
193 return ret;
194 }
195
196 static ssize_t iwl_dbgfs_sram_write(struct file *file,
197 const char __user *user_buf,
198 size_t count, loff_t *ppos)
199 {
200 struct iwl_priv *priv = file->private_data;
201 char buf[64];
202 int buf_size;
203 u32 offset, len;
204
205 memset(buf, 0, sizeof(buf));
206 buf_size = min(count, sizeof(buf) - 1);
207 if (copy_from_user(buf, user_buf, buf_size))
208 return -EFAULT;
209
210 if (sscanf(buf, "%x,%x", &offset, &len) == 2) {
211 priv->dbgfs->sram_offset = offset;
212 priv->dbgfs->sram_len = len;
213 } else {
214 priv->dbgfs->sram_offset = 0;
215 priv->dbgfs->sram_len = 0;
216 }
217
218 return count;
219 }
220
221 static ssize_t iwl_dbgfs_stations_read(struct file *file, char __user *user_buf,
222 size_t count, loff_t *ppos)
223 {
224 struct iwl_priv *priv = (struct iwl_priv *)file->private_data;
225 struct iwl_station_entry *station;
226 int max_sta = priv->hw_params.max_stations;
227 char *buf;
228 int i, j, pos = 0;
229 ssize_t ret;
230 /* Add 30 for initial string */
231 const size_t bufsz = 30 + sizeof(char) * 500 * (priv->num_stations);
232
233 buf = kmalloc(bufsz, GFP_KERNEL);
234 if (!buf)
235 return -ENOMEM;
236
237 pos += scnprintf(buf + pos, bufsz - pos, "num of stations: %d\n\n",
238 priv->num_stations);
239
240 for (i = 0; i < max_sta; i++) {
241 station = &priv->stations[i];
242 if (station->used) {
243 pos += scnprintf(buf + pos, bufsz - pos,
244 "station %d:\ngeneral data:\n", i+1);
245 pos += scnprintf(buf + pos, bufsz - pos, "id: %u\n",
246 station->sta.sta.sta_id);
247 pos += scnprintf(buf + pos, bufsz - pos, "mode: %u\n",
248 station->sta.mode);
249 pos += scnprintf(buf + pos, bufsz - pos,
250 "flags: 0x%x\n",
251 station->sta.station_flags_msk);
252 pos += scnprintf(buf + pos, bufsz - pos,
253 "ps_status: %u\n", station->ps_status);
254 pos += scnprintf(buf + pos, bufsz - pos, "tid data:\n");
255 pos += scnprintf(buf + pos, bufsz - pos,
256 "seq_num\t\ttxq_id");
257 pos += scnprintf(buf + pos, bufsz - pos,
258 "\tframe_count\twait_for_ba\t");
259 pos += scnprintf(buf + pos, bufsz - pos,
260 "start_idx\tbitmap0\t");
261 pos += scnprintf(buf + pos, bufsz - pos,
262 "bitmap1\trate_n_flags");
263 pos += scnprintf(buf + pos, bufsz - pos, "\n");
264
265 for (j = 0; j < MAX_TID_COUNT; j++) {
266 pos += scnprintf(buf + pos, bufsz - pos,
267 "[%d]:\t\t%u", j,
268 station->tid[j].seq_number);
269 pos += scnprintf(buf + pos, bufsz - pos,
270 "\t%u\t\t%u\t\t%u\t\t",
271 station->tid[j].agg.txq_id,
272 station->tid[j].agg.frame_count,
273 station->tid[j].agg.wait_for_ba);
274 pos += scnprintf(buf + pos, bufsz - pos,
275 "%u\t%llu\t%u",
276 station->tid[j].agg.start_idx,
277 (unsigned long long)station->tid[j].agg.bitmap,
278 station->tid[j].agg.rate_n_flags);
279 pos += scnprintf(buf + pos, bufsz - pos, "\n");
280 }
281 pos += scnprintf(buf + pos, bufsz - pos, "\n");
282 }
283 }
284
285 ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
286 kfree(buf);
287 return ret;
288 }
289
290 static ssize_t iwl_dbgfs_eeprom_read(struct file *file,
291 char __user *user_buf,
292 size_t count,
293 loff_t *ppos)
294 {
295 ssize_t ret;
296 struct iwl_priv *priv = (struct iwl_priv *)file->private_data;
297 int pos = 0, ofs = 0, buf_size = 0;
298 const u8 *ptr;
299 char *buf;
300 size_t eeprom_len = priv->cfg->eeprom_size;
301 buf_size = 4 * eeprom_len + 256;
302
303 if (eeprom_len % 16) {
304 IWL_ERROR("EEPROM size is not multiple of 16.\n");
305 return -ENODATA;
306 }
307
308 /* 4 characters for byte 0xYY */
309 buf = kzalloc(buf_size, GFP_KERNEL);
310 if (!buf) {
311 IWL_ERROR("Can not allocate Buffer\n");
312 return -ENOMEM;
313 }
314
315 ptr = priv->eeprom;
316 for (ofs = 0 ; ofs < eeprom_len ; ofs += 16) {
317 pos += scnprintf(buf + pos, buf_size - pos, "0x%.4x ", ofs);
318 hex_dump_to_buffer(ptr + ofs, 16 , 16, 2, buf + pos,
319 buf_size - pos, 0);
320 pos += strlen(buf);
321 if (buf_size - pos > 0)
322 buf[pos++] = '\n';
323 }
324
325 ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
326 kfree(buf);
327 return ret;
328 }
329
330 static ssize_t iwl_dbgfs_log_event_write(struct file *file,
331 const char __user *user_buf,
332 size_t count, loff_t *ppos)
333 {
334 struct iwl_priv *priv = file->private_data;
335 u32 event_log_flag;
336 char buf[8];
337 int buf_size;
338
339 memset(buf, 0, sizeof(buf));
340 buf_size = min(count, sizeof(buf) - 1);
341 if (copy_from_user(buf, user_buf, buf_size))
342 return -EFAULT;
343 if (sscanf(buf, "%d", &event_log_flag) != 1)
344 return -EFAULT;
345 if (event_log_flag == 1)
346 iwl_dump_nic_event_log(priv);
347
348 return count;
349 }
350
351
352
353 static ssize_t iwl_dbgfs_channels_read(struct file *file, char __user *user_buf,
354 size_t count, loff_t *ppos)
355 {
356 struct iwl_priv *priv = (struct iwl_priv *)file->private_data;
357 struct ieee80211_channel *channels = NULL;
358 const struct ieee80211_supported_band *supp_band = NULL;
359 int pos = 0, i, bufsz = PAGE_SIZE;
360 char *buf;
361 ssize_t ret;
362
363 if (!test_bit(STATUS_GEO_CONFIGURED, &priv->status))
364 return -EAGAIN;
365
366 buf = kzalloc(bufsz, GFP_KERNEL);
367 if (!buf) {
368 IWL_ERROR("Can not allocate Buffer\n");
369 return -ENOMEM;
370 }
371
372 supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_2GHZ);
373 channels = supp_band->channels;
374
375 pos += scnprintf(buf + pos, bufsz - pos,
376 "Displaying %d channels in 2.4GHz band 802.11bg):\n",
377 supp_band->n_channels);
378
379 for (i = 0; i < supp_band->n_channels; i++)
380 pos += scnprintf(buf + pos, bufsz - pos,
381 "%d: %ddBm: BSS%s%s, %s.\n",
382 ieee80211_frequency_to_channel(
383 channels[i].center_freq),
384 channels[i].max_power,
385 channels[i].flags & IEEE80211_CHAN_RADAR ?
386 " (IEEE 802.11h required)" : "",
387 (!(channels[i].flags & IEEE80211_CHAN_NO_IBSS)
388 || (channels[i].flags &
389 IEEE80211_CHAN_RADAR)) ? "" :
390 ", IBSS",
391 channels[i].flags &
392 IEEE80211_CHAN_PASSIVE_SCAN ?
393 "passive only" : "active/passive");
394
395 supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_5GHZ);
396 channels = supp_band->channels;
397
398 pos += scnprintf(buf + pos, bufsz - pos,
399 "Displaying %d channels in 5.2GHz band (802.11a)\n",
400 supp_band->n_channels);
401
402 for (i = 0; i < supp_band->n_channels; i++)
403 pos += scnprintf(buf + pos, bufsz - pos,
404 "%d: %ddBm: BSS%s%s, %s.\n",
405 ieee80211_frequency_to_channel(
406 channels[i].center_freq),
407 channels[i].max_power,
408 channels[i].flags & IEEE80211_CHAN_RADAR ?
409 " (IEEE 802.11h required)" : "",
410 ((channels[i].flags & IEEE80211_CHAN_NO_IBSS)
411 || (channels[i].flags &
412 IEEE80211_CHAN_RADAR)) ? "" :
413 ", IBSS",
414 channels[i].flags &
415 IEEE80211_CHAN_PASSIVE_SCAN ?
416 "passive only" : "active/passive");
417
418 ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
419 kfree(buf);
420 return ret;
421 }
422
423
424 DEBUGFS_READ_WRITE_FILE_OPS(sram);
425 DEBUGFS_WRITE_FILE_OPS(log_event);
426 DEBUGFS_READ_FILE_OPS(eeprom);
427 DEBUGFS_READ_FILE_OPS(stations);
428 DEBUGFS_READ_FILE_OPS(rx_statistics);
429 DEBUGFS_READ_FILE_OPS(tx_statistics);
430 DEBUGFS_READ_FILE_OPS(channels);
431
432 /*
433 * Create the debugfs files and directories
434 *
435 */
436 int iwl_dbgfs_register(struct iwl_priv *priv, const char *name)
437 {
438 struct iwl_debugfs *dbgfs;
439 struct dentry *phyd = priv->hw->wiphy->debugfsdir;
440 int ret = 0;
441
442 dbgfs = kzalloc(sizeof(struct iwl_debugfs), GFP_KERNEL);
443 if (!dbgfs) {
444 ret = -ENOMEM;
445 goto err;
446 }
447
448 priv->dbgfs = dbgfs;
449 dbgfs->name = name;
450 dbgfs->dir_drv = debugfs_create_dir(name, phyd);
451 if (!dbgfs->dir_drv || IS_ERR(dbgfs->dir_drv)) {
452 ret = -ENOENT;
453 goto err;
454 }
455
456 DEBUGFS_ADD_DIR(data, dbgfs->dir_drv);
457 DEBUGFS_ADD_DIR(rf, dbgfs->dir_drv);
458 DEBUGFS_ADD_FILE(eeprom, data);
459 DEBUGFS_ADD_FILE(sram, data);
460 DEBUGFS_ADD_FILE(log_event, data);
461 DEBUGFS_ADD_FILE(stations, data);
462 DEBUGFS_ADD_FILE(rx_statistics, data);
463 DEBUGFS_ADD_FILE(tx_statistics, data);
464 DEBUGFS_ADD_FILE(channels, data);
465 DEBUGFS_ADD_BOOL(disable_sensitivity, rf, &priv->disable_sens_cal);
466 DEBUGFS_ADD_BOOL(disable_chain_noise, rf,
467 &priv->disable_chain_noise_cal);
468 DEBUGFS_ADD_BOOL(disable_tx_power, rf, &priv->disable_tx_power_cal);
469 return 0;
470
471 err:
472 IWL_ERROR("Can't open the debugfs directory\n");
473 iwl_dbgfs_unregister(priv);
474 return ret;
475 }
476 EXPORT_SYMBOL(iwl_dbgfs_register);
477
478 /**
479 * Remove the debugfs files and directories
480 *
481 */
482 void iwl_dbgfs_unregister(struct iwl_priv *priv)
483 {
484 if (!priv->dbgfs)
485 return;
486
487 DEBUGFS_REMOVE(priv->dbgfs->dbgfs_data_files.file_eeprom);
488 DEBUGFS_REMOVE(priv->dbgfs->dbgfs_data_files.file_rx_statistics);
489 DEBUGFS_REMOVE(priv->dbgfs->dbgfs_data_files.file_tx_statistics);
490 DEBUGFS_REMOVE(priv->dbgfs->dbgfs_data_files.file_sram);
491 DEBUGFS_REMOVE(priv->dbgfs->dbgfs_data_files.file_log_event);
492 DEBUGFS_REMOVE(priv->dbgfs->dbgfs_data_files.file_stations);
493 DEBUGFS_REMOVE(priv->dbgfs->dbgfs_data_files.file_channels);
494 DEBUGFS_REMOVE(priv->dbgfs->dir_data);
495 DEBUGFS_REMOVE(priv->dbgfs->dbgfs_rf_files.file_disable_sensitivity);
496 DEBUGFS_REMOVE(priv->dbgfs->dbgfs_rf_files.file_disable_chain_noise);
497 DEBUGFS_REMOVE(priv->dbgfs->dbgfs_rf_files.file_disable_tx_power);
498 DEBUGFS_REMOVE(priv->dbgfs->dir_rf);
499 DEBUGFS_REMOVE(priv->dbgfs->dir_drv);
500 kfree(priv->dbgfs);
501 priv->dbgfs = NULL;
502 }
503 EXPORT_SYMBOL(iwl_dbgfs_unregister);
504
505
506
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