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753f9387aa68154a00b4b526b130cc190ac13578
[deliverable/linux.git] / drivers / net / wireless / iwlwifi / iwl-debugfs.c
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 * Tomas Winkler <tomas.winkler@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 goto err; \
63 } while (0)
64
65 #define DEBUGFS_REMOVE(name) do { \
66 debugfs_remove(name); \
67 name = NULL; \
68 } while (0);
69
70 /* file operation */
71 #define DEBUGFS_READ_FUNC(name) \
72 static ssize_t iwl_dbgfs_##name##_read(struct file *file, \
73 char __user *user_buf, \
74 size_t count, loff_t *ppos);
75
76 #define DEBUGFS_WRITE_FUNC(name) \
77 static ssize_t iwl_dbgfs_##name##_write(struct file *file, \
78 const char __user *user_buf, \
79 size_t count, loff_t *ppos);
80
81
82 static int iwl_dbgfs_open_file_generic(struct inode *inode, struct file *file)
83 {
84 file->private_data = inode->i_private;
85 return 0;
86 }
87
88 #define DEBUGFS_READ_FILE_OPS(name) \
89 DEBUGFS_READ_FUNC(name); \
90 static const struct file_operations iwl_dbgfs_##name##_ops = { \
91 .read = iwl_dbgfs_##name##_read, \
92 .open = iwl_dbgfs_open_file_generic, \
93 };
94
95 #define DEBUGFS_WRITE_FILE_OPS(name) \
96 DEBUGFS_WRITE_FUNC(name); \
97 static const struct file_operations iwl_dbgfs_##name##_ops = { \
98 .write = iwl_dbgfs_##name##_write, \
99 .open = iwl_dbgfs_open_file_generic, \
100 };
101
102
103 #define DEBUGFS_READ_WRITE_FILE_OPS(name) \
104 DEBUGFS_READ_FUNC(name); \
105 DEBUGFS_WRITE_FUNC(name); \
106 static const struct file_operations iwl_dbgfs_##name##_ops = { \
107 .write = iwl_dbgfs_##name##_write, \
108 .read = iwl_dbgfs_##name##_read, \
109 .open = iwl_dbgfs_open_file_generic, \
110 };
111
112
113 static ssize_t iwl_dbgfs_tx_statistics_read(struct file *file,
114 char __user *user_buf,
115 size_t count, loff_t *ppos) {
116
117 struct iwl_priv *priv = (struct iwl_priv *)file->private_data;
118 char buf[256];
119 int pos = 0;
120 const size_t bufsz = sizeof(buf);
121
122 pos += scnprintf(buf + pos, bufsz - pos, "mgmt: %u\n",
123 priv->tx_stats[0].cnt);
124 pos += scnprintf(buf + pos, bufsz - pos, "ctrl: %u\n",
125 priv->tx_stats[1].cnt);
126 pos += scnprintf(buf + pos, bufsz - pos, "data: %u\n",
127 priv->tx_stats[2].cnt);
128
129 return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
130 }
131
132 static ssize_t iwl_dbgfs_rx_statistics_read(struct file *file,
133 char __user *user_buf,
134 size_t count, loff_t *ppos) {
135
136 struct iwl_priv *priv = (struct iwl_priv *)file->private_data;
137 char buf[256];
138 int pos = 0;
139 const size_t bufsz = sizeof(buf);
140
141 pos += scnprintf(buf + pos, bufsz - pos, "mgmt: %u\n",
142 priv->rx_stats[0].cnt);
143 pos += scnprintf(buf + pos, bufsz - pos, "ctrl: %u\n",
144 priv->rx_stats[1].cnt);
145 pos += scnprintf(buf + pos, bufsz - pos, "data: %u\n",
146 priv->rx_stats[2].cnt);
147
148 return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
149 }
150
151 #define BYTE1_MASK 0x000000ff;
152 #define BYTE2_MASK 0x0000ffff;
153 #define BYTE3_MASK 0x00ffffff;
154 static ssize_t iwl_dbgfs_sram_read(struct file *file,
155 char __user *user_buf,
156 size_t count, loff_t *ppos)
157 {
158 u32 val;
159 char buf[1024];
160 ssize_t ret;
161 int i;
162 int pos = 0;
163 struct iwl_priv *priv = (struct iwl_priv *)file->private_data;
164 const size_t bufsz = sizeof(buf);
165
166 printk(KERN_DEBUG "offset is: 0x%x\tlen is: 0x%x\n",
167 priv->dbgfs->sram_offset, priv->dbgfs->sram_len);
168
169 iwl_grab_nic_access(priv);
170 for (i = priv->dbgfs->sram_len; i > 0; i -= 4) {
171 val = iwl_read_targ_mem(priv, priv->dbgfs->sram_offset + \
172 priv->dbgfs->sram_len - i);
173 if (i < 4) {
174 switch (i) {
175 case 1:
176 val &= BYTE1_MASK;
177 break;
178 case 2:
179 val &= BYTE2_MASK;
180 break;
181 case 3:
182 val &= BYTE3_MASK;
183 break;
184 }
185 }
186 pos += scnprintf(buf + pos, bufsz - pos, "0x%08x ", val);
187 }
188 pos += scnprintf(buf + pos, bufsz - pos, "\n");
189 iwl_release_nic_access(priv);
190
191 ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
192 return ret;
193 }
194
195 static ssize_t iwl_dbgfs_sram_write(struct file *file,
196 const char __user *user_buf,
197 size_t count, loff_t *ppos)
198 {
199 struct iwl_priv *priv = file->private_data;
200 char buf[64];
201 int buf_size;
202 u32 offset, len;
203
204 memset(buf, 0, sizeof(buf));
205 buf_size = min(count, sizeof(buf) - 1);
206 if (copy_from_user(buf, user_buf, buf_size))
207 return -EFAULT;
208
209 if (sscanf(buf, "%x,%x", &offset, &len) == 2) {
210 priv->dbgfs->sram_offset = offset;
211 priv->dbgfs->sram_len = len;
212 } else {
213 priv->dbgfs->sram_offset = 0;
214 priv->dbgfs->sram_len = 0;
215 }
216
217 return count;
218 }
219
220 static ssize_t iwl_dbgfs_stations_read(struct file *file, char __user *user_buf,
221 size_t count, loff_t *ppos)
222 {
223 struct iwl_priv *priv = (struct iwl_priv *)file->private_data;
224 struct iwl_station_entry *station;
225 int max_sta = priv->hw_params.max_stations;
226 char *buf;
227 int i, j, pos = 0;
228 ssize_t ret;
229 /* Add 30 for initial string */
230 const size_t bufsz = 30 + sizeof(char) * 500 * (priv->num_stations);
231
232 buf = kmalloc(bufsz, GFP_KERNEL);
233 if (!buf)
234 return -ENOMEM;
235
236 pos += scnprintf(buf + pos, bufsz - pos, "num of stations: %d\n\n",
237 priv->num_stations);
238
239 for (i = 0; i < max_sta; i++) {
240 station = &priv->stations[i];
241 if (station->used) {
242 pos += scnprintf(buf + pos, bufsz - pos,
243 "station %d:\ngeneral data:\n", i+1);
244 pos += scnprintf(buf + pos, bufsz - pos, "id: %u\n",
245 station->sta.sta.sta_id);
246 pos += scnprintf(buf + pos, bufsz - pos, "mode: %u\n",
247 station->sta.mode);
248 pos += scnprintf(buf + pos, bufsz - pos,
249 "flags: 0x%x\n",
250 station->sta.station_flags_msk);
251 pos += scnprintf(buf + pos, bufsz - pos,
252 "ps_status: %u\n", station->ps_status);
253 pos += scnprintf(buf + pos, bufsz - pos, "tid data:\n");
254 pos += scnprintf(buf + pos, bufsz - pos,
255 "seq_num\t\ttxq_id");
256 pos += scnprintf(buf + pos, bufsz - pos,
257 "\tframe_count\twait_for_ba\t");
258 pos += scnprintf(buf + pos, bufsz - pos,
259 "start_idx\tbitmap0\t");
260 pos += scnprintf(buf + pos, bufsz - pos,
261 "bitmap1\trate_n_flags");
262 pos += scnprintf(buf + pos, bufsz - pos, "\n");
263
264 for (j = 0; j < MAX_TID_COUNT; j++) {
265 pos += scnprintf(buf + pos, bufsz - pos,
266 "[%d]:\t\t%u", j,
267 station->tid[j].seq_number);
268 pos += scnprintf(buf + pos, bufsz - pos,
269 "\t%u\t\t%u\t\t%u\t\t",
270 station->tid[j].agg.txq_id,
271 station->tid[j].agg.frame_count,
272 station->tid[j].agg.wait_for_ba);
273 pos += scnprintf(buf + pos, bufsz - pos,
274 "%u\t%llu\t%u",
275 station->tid[j].agg.start_idx,
276 (unsigned long long)station->tid[j].agg.bitmap,
277 station->tid[j].agg.rate_n_flags);
278 pos += scnprintf(buf + pos, bufsz - pos, "\n");
279 }
280 pos += scnprintf(buf + pos, bufsz - pos, "\n");
281 }
282 }
283
284 ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
285 kfree(buf);
286 return ret;
287 }
288
289 static ssize_t iwl_dbgfs_eeprom_read(struct file *file,
290 char __user *user_buf,
291 size_t count,
292 loff_t *ppos)
293 {
294 ssize_t ret;
295 struct iwl_priv *priv = (struct iwl_priv *)file->private_data;
296 int pos = 0, ofs = 0, buf_size = 0;
297 const u8 *ptr;
298 char *buf;
299 size_t eeprom_len = priv->cfg->eeprom_size;
300 buf_size = 4 * eeprom_len + 256;
301
302 if (eeprom_len % 16) {
303 IWL_ERROR("EEPROM size is not multiple of 16.\n");
304 return -ENODATA;
305 }
306
307 /* 4 characters for byte 0xYY */
308 buf = kzalloc(buf_size, GFP_KERNEL);
309 if (!buf) {
310 IWL_ERROR("Can not allocate Buffer\n");
311 return -ENOMEM;
312 }
313
314 ptr = priv->eeprom;
315 for (ofs = 0 ; ofs < eeprom_len ; ofs += 16) {
316 pos += scnprintf(buf + pos, buf_size - pos, "0x%.4x ", ofs);
317 hex_dump_to_buffer(ptr + ofs, 16 , 16, 2, buf + pos,
318 buf_size - pos, 0);
319 pos += strlen(buf);
320 if (buf_size - pos > 0)
321 buf[pos++] = '\n';
322 }
323
324 ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
325 kfree(buf);
326 return ret;
327 }
328
329 static ssize_t iwl_dbgfs_log_event_write(struct file *file,
330 const char __user *user_buf,
331 size_t count, loff_t *ppos)
332 {
333 struct iwl_priv *priv = file->private_data;
334 u32 event_log_flag;
335 char buf[8];
336 int buf_size;
337
338 memset(buf, 0, sizeof(buf));
339 buf_size = min(count, sizeof(buf) - 1);
340 if (copy_from_user(buf, user_buf, buf_size))
341 return -EFAULT;
342 if (sscanf(buf, "%d", &event_log_flag) != 1)
343 return -EFAULT;
344 if (event_log_flag == 1)
345 iwl_dump_nic_event_log(priv);
346
347 return count;
348 }
349
350 DEBUGFS_READ_WRITE_FILE_OPS(sram);
351 DEBUGFS_WRITE_FILE_OPS(log_event);
352 DEBUGFS_READ_FILE_OPS(eeprom);
353 DEBUGFS_READ_FILE_OPS(stations);
354 DEBUGFS_READ_FILE_OPS(rx_statistics);
355 DEBUGFS_READ_FILE_OPS(tx_statistics);
356
357 /*
358 * Create the debugfs files and directories
359 *
360 */
361 int iwl_dbgfs_register(struct iwl_priv *priv, const char *name)
362 {
363 struct iwl_debugfs *dbgfs;
364 struct dentry *phyd = priv->hw->wiphy->debugfsdir;
365 int ret = 0;
366
367 dbgfs = kzalloc(sizeof(struct iwl_debugfs), GFP_KERNEL);
368 if (!dbgfs) {
369 ret = -ENOMEM;
370 goto err;
371 }
372
373 priv->dbgfs = dbgfs;
374 dbgfs->name = name;
375 dbgfs->dir_drv = debugfs_create_dir(name, phyd);
376 if (!dbgfs->dir_drv || IS_ERR(dbgfs->dir_drv)) {
377 ret = -ENOENT;
378 goto err;
379 }
380
381 DEBUGFS_ADD_DIR(data, dbgfs->dir_drv);
382 DEBUGFS_ADD_DIR(rf, dbgfs->dir_drv);
383 DEBUGFS_ADD_FILE(eeprom, data);
384 DEBUGFS_ADD_FILE(sram, data);
385 DEBUGFS_ADD_FILE(log_event, data);
386 DEBUGFS_ADD_FILE(stations, data);
387 DEBUGFS_ADD_FILE(rx_statistics, data);
388 DEBUGFS_ADD_FILE(tx_statistics, data);
389 DEBUGFS_ADD_BOOL(disable_sensitivity, rf, &priv->disable_sens_cal);
390 DEBUGFS_ADD_BOOL(disable_chain_noise, rf,
391 &priv->disable_chain_noise_cal);
392 DEBUGFS_ADD_BOOL(disable_tx_power, rf, &priv->disable_tx_power_cal);
393 return 0;
394
395 err:
396 IWL_ERROR("Can't open the debugfs directory\n");
397 iwl_dbgfs_unregister(priv);
398 return ret;
399 }
400 EXPORT_SYMBOL(iwl_dbgfs_register);
401
402 /**
403 * Remove the debugfs files and directories
404 *
405 */
406 void iwl_dbgfs_unregister(struct iwl_priv *priv)
407 {
408 if (!priv->dbgfs)
409 return;
410
411 DEBUGFS_REMOVE(priv->dbgfs->dbgfs_data_files.file_eeprom);
412 DEBUGFS_REMOVE(priv->dbgfs->dbgfs_data_files.file_rx_statistics);
413 DEBUGFS_REMOVE(priv->dbgfs->dbgfs_data_files.file_tx_statistics);
414 DEBUGFS_REMOVE(priv->dbgfs->dbgfs_data_files.file_sram);
415 DEBUGFS_REMOVE(priv->dbgfs->dbgfs_data_files.file_log_event);
416 DEBUGFS_REMOVE(priv->dbgfs->dbgfs_data_files.file_stations);
417 DEBUGFS_REMOVE(priv->dbgfs->dir_data);
418 DEBUGFS_REMOVE(priv->dbgfs->dbgfs_rf_files.file_disable_sensitivity);
419 DEBUGFS_REMOVE(priv->dbgfs->dbgfs_rf_files.file_disable_chain_noise);
420 DEBUGFS_REMOVE(priv->dbgfs->dbgfs_rf_files.file_disable_tx_power);
421 DEBUGFS_REMOVE(priv->dbgfs->dir_rf);
422 DEBUGFS_REMOVE(priv->dbgfs->dir_drv);
423 kfree(priv->dbgfs);
424 priv->dbgfs = NULL;
425 }
426 EXPORT_SYMBOL(iwl_dbgfs_unregister);
427
428
429
Linux kernel - Deliverables
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