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Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wirel...
[linux-2.6/kvm.git] / drivers / net / wireless / iwmc3200wifi / debugfs.c
blob5b75a0ddac1c1e78879a27394de4ab00bc4d1687
1 /*
2 * Intel Wireless Multicomm 3200 WiFi driver
3 *
4 * Copyright (C) 2009 Intel Corporation <ilw@linux.intel.com>
5 * Samuel Ortiz <samuel.ortiz@intel.com>
6 * Zhu Yi <yi.zhu@intel.com>
7 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License version
10 * 2 as published by the Free Software Foundation.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
20 * 02110-1301, USA.
21 *
22 */
23
24 #include <linux/kernel.h>
25 #include <linux/bitops.h>
26 #include <linux/debugfs.h>
27
28 #include "iwm.h"
29 #include "bus.h"
30 #include "rx.h"
31 #include "debug.h"
32
33 static struct {
34 u8 id;
35 char *name;
36 } iwm_debug_module[__IWM_DM_NR] = {
37 {IWM_DM_BOOT, "boot"},
38 {IWM_DM_FW, "fw"},
39 {IWM_DM_SDIO, "sdio"},
40 {IWM_DM_NTF, "ntf"},
41 {IWM_DM_RX, "rx"},
42 {IWM_DM_TX, "tx"},
43 {IWM_DM_MLME, "mlme"},
44 {IWM_DM_CMD, "cmd"},
45 {IWM_DM_WEXT, "wext"},
46 };
47
48 #define add_dbg_module(dbg, name, id, initlevel) \
49 do { \
50 struct dentry *d; \
51 dbg.dbg_module[id] = (initlevel); \
52 d = debugfs_create_x8(name, 0600, dbg.dbgdir, \
53 &(dbg.dbg_module[id])); \
54 if (!IS_ERR(d)) \
55 dbg.dbg_module_dentries[id] = d; \
56 } while (0)
57
58 static int iwm_debugfs_u32_read(void *data, u64 *val)
59 {
60 struct iwm_priv *iwm = data;
61
62 *val = iwm->dbg.dbg_level;
63 return 0;
64 }
65
66 static int iwm_debugfs_dbg_level_write(void *data, u64 val)
67 {
68 struct iwm_priv *iwm = data;
69 int i;
70
71 iwm->dbg.dbg_level = val;
72
73 for (i = 0; i < __IWM_DM_NR; i++)
74 iwm->dbg.dbg_module[i] = val;
75
76 return 0;
77 }
78 DEFINE_SIMPLE_ATTRIBUTE(fops_iwm_dbg_level,
79 iwm_debugfs_u32_read, iwm_debugfs_dbg_level_write,
80 "%llu\n");
81
82 static int iwm_debugfs_dbg_modules_write(void *data, u64 val)
83 {
84 struct iwm_priv *iwm = data;
85 int i, bit;
86
87 iwm->dbg.dbg_modules = val;
88
89 for (i = 0; i < __IWM_DM_NR; i++)
90 iwm->dbg.dbg_module[i] = 0;
91
92 for_each_set_bit(bit, &iwm->dbg.dbg_modules, __IWM_DM_NR)
93 iwm->dbg.dbg_module[bit] = iwm->dbg.dbg_level;
94
95 return 0;
96 }
97 DEFINE_SIMPLE_ATTRIBUTE(fops_iwm_dbg_modules,
98 iwm_debugfs_u32_read, iwm_debugfs_dbg_modules_write,
99 "%llu\n");
100
101 static int iwm_generic_open(struct inode *inode, struct file *filp)
102 {
103 filp->private_data = inode->i_private;
104 return 0;
105 }
106
107
108 static ssize_t iwm_debugfs_txq_read(struct file *filp, char __user *buffer,
109 size_t count, loff_t *ppos)
110 {
111 struct iwm_priv *iwm = filp->private_data;
112 char *buf;
113 int i, buf_len = 4096;
114 size_t len = 0;
115 ssize_t ret;
116
117 if (*ppos != 0)
118 return 0;
119 if (count < sizeof(buf))
120 return -ENOSPC;
121
122 buf = kzalloc(buf_len, GFP_KERNEL);
123 if (!buf)
124 return -ENOMEM;
125
126 for (i = 0; i < IWM_TX_QUEUES; i++) {
127 struct iwm_tx_queue *txq = &iwm->txq[i];
128 struct sk_buff *skb;
129 int j;
130 unsigned long flags;
131
132 spin_lock_irqsave(&txq->queue.lock, flags);
133
134 skb = (struct sk_buff *)&txq->queue;
135
136 len += snprintf(buf + len, buf_len - len, "TXQ #%d\n", i);
137 len += snprintf(buf + len, buf_len - len, "\tStopped: %d\n",
138 __netif_subqueue_stopped(iwm_to_ndev(iwm),
139 txq->id));
140 len += snprintf(buf + len, buf_len - len, "\tConcat count:%d\n",
141 txq->concat_count);
142 len += snprintf(buf + len, buf_len - len, "\tQueue len: %d\n",
143 skb_queue_len(&txq->queue));
144 for (j = 0; j < skb_queue_len(&txq->queue); j++) {
145 struct iwm_tx_info *tx_info;
146
147 skb = skb->next;
148 tx_info = skb_to_tx_info(skb);
149
150 len += snprintf(buf + len, buf_len - len,
151 "\tSKB #%d\n", j);
152 len += snprintf(buf + len, buf_len - len,
153 "\t\tsta: %d\n", tx_info->sta);
154 len += snprintf(buf + len, buf_len - len,
155 "\t\tcolor: %d\n", tx_info->color);
156 len += snprintf(buf + len, buf_len - len,
157 "\t\ttid: %d\n", tx_info->tid);
158 }
159
160 spin_unlock_irqrestore(&txq->queue.lock, flags);
161
162 spin_lock_irqsave(&txq->stopped_queue.lock, flags);
163
164 len += snprintf(buf + len, buf_len - len,
165 "\tStopped Queue len: %d\n",
166 skb_queue_len(&txq->stopped_queue));
167 for (j = 0; j < skb_queue_len(&txq->stopped_queue); j++) {
168 struct iwm_tx_info *tx_info;
169
170 skb = skb->next;
171 tx_info = skb_to_tx_info(skb);
172
173 len += snprintf(buf + len, buf_len - len,
174 "\tSKB #%d\n", j);
175 len += snprintf(buf + len, buf_len - len,
176 "\t\tsta: %d\n", tx_info->sta);
177 len += snprintf(buf + len, buf_len - len,
178 "\t\tcolor: %d\n", tx_info->color);
179 len += snprintf(buf + len, buf_len - len,
180 "\t\ttid: %d\n", tx_info->tid);
181 }
182
183 spin_unlock_irqrestore(&txq->stopped_queue.lock, flags);
184 }
185
186 ret = simple_read_from_buffer(buffer, len, ppos, buf, buf_len);
187 kfree(buf);
188
189 return ret;
190 }
191
192 static ssize_t iwm_debugfs_tx_credit_read(struct file *filp,
193 char __user *buffer,
194 size_t count, loff_t *ppos)
195 {
196 struct iwm_priv *iwm = filp->private_data;
197 struct iwm_tx_credit *credit = &iwm->tx_credit;
198 char *buf;
199 int i, buf_len = 4096;
200 size_t len = 0;
201 ssize_t ret;
202
203 if (*ppos != 0)
204 return 0;
205 if (count < sizeof(buf))
206 return -ENOSPC;
207
208 buf = kzalloc(buf_len, GFP_KERNEL);
209 if (!buf)
210 return -ENOMEM;
211
212 len += snprintf(buf + len, buf_len - len,
213 "NR pools: %d\n", credit->pool_nr);
214 len += snprintf(buf + len, buf_len - len,
215 "pools map: 0x%lx\n", credit->full_pools_map);
216
217 len += snprintf(buf + len, buf_len - len, "\n### POOLS ###\n");
218 for (i = 0; i < IWM_MACS_OUT_GROUPS; i++) {
219 len += snprintf(buf + len, buf_len - len,
220 "pools entry #%d\n", i);
221 len += snprintf(buf + len, buf_len - len,
222 "\tid: %d\n",
223 credit->pools[i].id);
224 len += snprintf(buf + len, buf_len - len,
225 "\tsid: %d\n",
226 credit->pools[i].sid);
227 len += snprintf(buf + len, buf_len - len,
228 "\tmin_pages: %d\n",
229 credit->pools[i].min_pages);
230 len += snprintf(buf + len, buf_len - len,
231 "\tmax_pages: %d\n",
232 credit->pools[i].max_pages);
233 len += snprintf(buf + len, buf_len - len,
234 "\talloc_pages: %d\n",
235 credit->pools[i].alloc_pages);
236 len += snprintf(buf + len, buf_len - len,
237 "\tfreed_pages: %d\n",
238 credit->pools[i].total_freed_pages);
239 }
240
241 len += snprintf(buf + len, buf_len - len, "\n### SPOOLS ###\n");
242 for (i = 0; i < IWM_MACS_OUT_SGROUPS; i++) {
243 len += snprintf(buf + len, buf_len - len,
244 "spools entry #%d\n", i);
245 len += snprintf(buf + len, buf_len - len,
246 "\tid: %d\n",
247 credit->spools[i].id);
248 len += snprintf(buf + len, buf_len - len,
249 "\tmax_pages: %d\n",
250 credit->spools[i].max_pages);
251 len += snprintf(buf + len, buf_len - len,
252 "\talloc_pages: %d\n",
253 credit->spools[i].alloc_pages);
254
255 }
256
257 ret = simple_read_from_buffer(buffer, len, ppos, buf, buf_len);
258 kfree(buf);
259
260 return ret;
261 }
262
263 static ssize_t iwm_debugfs_rx_ticket_read(struct file *filp,
264 char __user *buffer,
265 size_t count, loff_t *ppos)
266 {
267 struct iwm_priv *iwm = filp->private_data;
268 struct iwm_rx_ticket_node *ticket;
269 char *buf;
270 int buf_len = 4096, i;
271 size_t len = 0;
272 ssize_t ret;
273
274 if (*ppos != 0)
275 return 0;
276 if (count < sizeof(buf))
277 return -ENOSPC;
278
279 buf = kzalloc(buf_len, GFP_KERNEL);
280 if (!buf)
281 return -ENOMEM;
282
283 spin_lock(&iwm->ticket_lock);
284 list_for_each_entry(ticket, &iwm->rx_tickets, node) {
285 len += snprintf(buf + len, buf_len - len, "Ticket #%d\n",
286 ticket->ticket->id);
287 len += snprintf(buf + len, buf_len - len, "\taction: 0x%x\n",
288 ticket->ticket->action);
289 len += snprintf(buf + len, buf_len - len, "\tflags: 0x%x\n",
290 ticket->ticket->flags);
291 }
292 spin_unlock(&iwm->ticket_lock);
293
294 for (i = 0; i < IWM_RX_ID_HASH; i++) {
295 struct iwm_rx_packet *packet;
296 struct list_head *pkt_list = &iwm->rx_packets[i];
297
298 if (!list_empty(pkt_list)) {
299 len += snprintf(buf + len, buf_len - len,
300 "Packet hash #%d\n", i);
301 spin_lock(&iwm->packet_lock[i]);
302 list_for_each_entry(packet, pkt_list, node) {
303 len += snprintf(buf + len, buf_len - len,
304 "\tPacket id: %d\n",
305 packet->id);
306 len += snprintf(buf + len, buf_len - len,
307 "\tPacket length: %lu\n",
308 packet->pkt_size);
309 }
310 spin_unlock(&iwm->packet_lock[i]);
311 }
312 }
313
314 ret = simple_read_from_buffer(buffer, len, ppos, buf, buf_len);
315 kfree(buf);
316
317 return ret;
318 }
319
320 static ssize_t iwm_debugfs_fw_err_read(struct file *filp,
321 char __user *buffer,
322 size_t count, loff_t *ppos)
323 {
324
325 struct iwm_priv *iwm = filp->private_data;
326 char buf[512];
327 int buf_len = 512;
328 size_t len = 0;
329
330 if (*ppos != 0)
331 return 0;
332 if (count < sizeof(buf))
333 return -ENOSPC;
334
335 if (!iwm->last_fw_err)
336 return -ENOMEM;
337
338 if (iwm->last_fw_err->line_num == 0)
339 goto out;
340
341 len += snprintf(buf + len, buf_len - len, "%cMAC FW ERROR:\n",
342 (le32_to_cpu(iwm->last_fw_err->category) == UMAC_SYS_ERR_CAT_LMAC)
343 ? 'L' : 'U');
344 len += snprintf(buf + len, buf_len - len,
345 "\tCategory: %d\n",
346 le32_to_cpu(iwm->last_fw_err->category));
347
348 len += snprintf(buf + len, buf_len - len,
349 "\tStatus: 0x%x\n",
350 le32_to_cpu(iwm->last_fw_err->status));
351
352 len += snprintf(buf + len, buf_len - len,
353 "\tPC: 0x%x\n",
354 le32_to_cpu(iwm->last_fw_err->pc));
355
356 len += snprintf(buf + len, buf_len - len,
357 "\tblink1: %d\n",
358 le32_to_cpu(iwm->last_fw_err->blink1));
359
360 len += snprintf(buf + len, buf_len - len,
361 "\tblink2: %d\n",
362 le32_to_cpu(iwm->last_fw_err->blink2));
363
364 len += snprintf(buf + len, buf_len - len,
365 "\tilink1: %d\n",
366 le32_to_cpu(iwm->last_fw_err->ilink1));
367
368 len += snprintf(buf + len, buf_len - len,
369 "\tilink2: %d\n",
370 le32_to_cpu(iwm->last_fw_err->ilink2));
371
372 len += snprintf(buf + len, buf_len - len,
373 "\tData1: 0x%x\n",
374 le32_to_cpu(iwm->last_fw_err->data1));
375
376 len += snprintf(buf + len, buf_len - len,
377 "\tData2: 0x%x\n",
378 le32_to_cpu(iwm->last_fw_err->data2));
379
380 len += snprintf(buf + len, buf_len - len,
381 "\tLine number: %d\n",
382 le32_to_cpu(iwm->last_fw_err->line_num));
383
384 len += snprintf(buf + len, buf_len - len,
385 "\tUMAC status: 0x%x\n",
386 le32_to_cpu(iwm->last_fw_err->umac_status));
387
388 len += snprintf(buf + len, buf_len - len,
389 "\tLMAC status: 0x%x\n",
390 le32_to_cpu(iwm->last_fw_err->lmac_status));
391
392 len += snprintf(buf + len, buf_len - len,
393 "\tSDIO status: 0x%x\n",
394 le32_to_cpu(iwm->last_fw_err->sdio_status));
395
396 out:
397
398 return simple_read_from_buffer(buffer, len, ppos, buf, buf_len);
399 }
400
401 static const struct file_operations iwm_debugfs_txq_fops = {
402 .owner = THIS_MODULE,
403 .open = iwm_generic_open,
404 .read = iwm_debugfs_txq_read,
405 };
406
407 static const struct file_operations iwm_debugfs_tx_credit_fops = {
408 .owner = THIS_MODULE,
409 .open = iwm_generic_open,
410 .read = iwm_debugfs_tx_credit_read,
411 };
412
413 static const struct file_operations iwm_debugfs_rx_ticket_fops = {
414 .owner = THIS_MODULE,
415 .open = iwm_generic_open,
416 .read = iwm_debugfs_rx_ticket_read,
417 };
418
419 static const struct file_operations iwm_debugfs_fw_err_fops = {
420 .owner = THIS_MODULE,
421 .open = iwm_generic_open,
422 .read = iwm_debugfs_fw_err_read,
423 };
424
425 int iwm_debugfs_init(struct iwm_priv *iwm)
426 {
427 int i, result;
428 char devdir[16];
429
430 iwm->dbg.rootdir = debugfs_create_dir(KBUILD_MODNAME, NULL);
431 result = PTR_ERR(iwm->dbg.rootdir);
432 if (!result || IS_ERR(iwm->dbg.rootdir)) {
433 if (result == -ENODEV) {
434 IWM_ERR(iwm, "DebugFS (CONFIG_DEBUG_FS) not "
435 "enabled in kernel config\n");
436 result = 0; /* No debugfs support */
437 }
438 IWM_ERR(iwm, "Couldn't create rootdir: %d\n", result);
439 goto error;
440 }
441
442 snprintf(devdir, sizeof(devdir), "%s", wiphy_name(iwm_to_wiphy(iwm)));
443
444 iwm->dbg.devdir = debugfs_create_dir(devdir, iwm->dbg.rootdir);
445 result = PTR_ERR(iwm->dbg.devdir);
446 if (IS_ERR(iwm->dbg.devdir) && (result != -ENODEV)) {
447 IWM_ERR(iwm, "Couldn't create devdir: %d\n", result);
448 goto error;
449 }
450
451 iwm->dbg.dbgdir = debugfs_create_dir("debug", iwm->dbg.devdir);
452 result = PTR_ERR(iwm->dbg.dbgdir);
453 if (IS_ERR(iwm->dbg.dbgdir) && (result != -ENODEV)) {
454 IWM_ERR(iwm, "Couldn't create dbgdir: %d\n", result);
455 goto error;
456 }
457
458 iwm->dbg.rxdir = debugfs_create_dir("rx", iwm->dbg.devdir);
459 result = PTR_ERR(iwm->dbg.rxdir);
460 if (IS_ERR(iwm->dbg.rxdir) && (result != -ENODEV)) {
461 IWM_ERR(iwm, "Couldn't create rx dir: %d\n", result);
462 goto error;
463 }
464
465 iwm->dbg.txdir = debugfs_create_dir("tx", iwm->dbg.devdir);
466 result = PTR_ERR(iwm->dbg.txdir);
467 if (IS_ERR(iwm->dbg.txdir) && (result != -ENODEV)) {
468 IWM_ERR(iwm, "Couldn't create tx dir: %d\n", result);
469 goto error;
470 }
471
472 iwm->dbg.busdir = debugfs_create_dir("bus", iwm->dbg.devdir);
473 result = PTR_ERR(iwm->dbg.busdir);
474 if (IS_ERR(iwm->dbg.busdir) && (result != -ENODEV)) {
475 IWM_ERR(iwm, "Couldn't create bus dir: %d\n", result);
476 goto error;
477 }
478
479 if (iwm->bus_ops->debugfs_init) {
480 result = iwm->bus_ops->debugfs_init(iwm, iwm->dbg.busdir);
481 if (result < 0) {
482 IWM_ERR(iwm, "Couldn't create bus entry: %d\n", result);
483 goto error;
484 }
485 }
486
487
488 iwm->dbg.dbg_level = IWM_DL_NONE;
489 iwm->dbg.dbg_level_dentry =
490 debugfs_create_file("level", 0200, iwm->dbg.dbgdir, iwm,
491 &fops_iwm_dbg_level);
492 result = PTR_ERR(iwm->dbg.dbg_level_dentry);
493 if (IS_ERR(iwm->dbg.dbg_level_dentry) && (result != -ENODEV)) {
494 IWM_ERR(iwm, "Couldn't create dbg_level: %d\n", result);
495 goto error;
496 }
497
498
499 iwm->dbg.dbg_modules = IWM_DM_DEFAULT;
500 iwm->dbg.dbg_modules_dentry =
501 debugfs_create_file("modules", 0200, iwm->dbg.dbgdir, iwm,
502 &fops_iwm_dbg_modules);
503 result = PTR_ERR(iwm->dbg.dbg_modules_dentry);
504 if (IS_ERR(iwm->dbg.dbg_modules_dentry) && (result != -ENODEV)) {
505 IWM_ERR(iwm, "Couldn't create dbg_modules: %d\n", result);
506 goto error;
507 }
508
509 for (i = 0; i < __IWM_DM_NR; i++)
510 add_dbg_module(iwm->dbg, iwm_debug_module[i].name,
511 iwm_debug_module[i].id, IWM_DL_DEFAULT);
512
513 iwm->dbg.txq_dentry = debugfs_create_file("queues", 0200,
514 iwm->dbg.txdir, iwm,
515 &iwm_debugfs_txq_fops);
516 result = PTR_ERR(iwm->dbg.txq_dentry);
517 if (IS_ERR(iwm->dbg.txq_dentry) && (result != -ENODEV)) {
518 IWM_ERR(iwm, "Couldn't create tx queue: %d\n", result);
519 goto error;
520 }
521
522 iwm->dbg.tx_credit_dentry = debugfs_create_file("credits", 0200,
523 iwm->dbg.txdir, iwm,
524 &iwm_debugfs_tx_credit_fops);
525 result = PTR_ERR(iwm->dbg.tx_credit_dentry);
526 if (IS_ERR(iwm->dbg.tx_credit_dentry) && (result != -ENODEV)) {
527 IWM_ERR(iwm, "Couldn't create tx credit: %d\n", result);
528 goto error;
529 }
530
531 iwm->dbg.rx_ticket_dentry = debugfs_create_file("tickets", 0200,
532 iwm->dbg.rxdir, iwm,
533 &iwm_debugfs_rx_ticket_fops);
534 result = PTR_ERR(iwm->dbg.rx_ticket_dentry);
535 if (IS_ERR(iwm->dbg.rx_ticket_dentry) && (result != -ENODEV)) {
536 IWM_ERR(iwm, "Couldn't create rx ticket: %d\n", result);
537 goto error;
538 }
539
540 iwm->dbg.fw_err_dentry = debugfs_create_file("last_fw_err", 0200,
541 iwm->dbg.dbgdir, iwm,
542 &iwm_debugfs_fw_err_fops);
543 result = PTR_ERR(iwm->dbg.fw_err_dentry);
544 if (IS_ERR(iwm->dbg.fw_err_dentry) && (result != -ENODEV)) {
545 IWM_ERR(iwm, "Couldn't create last FW err: %d\n", result);
546 goto error;
547 }
548
549
550 return 0;
551
552 error:
553 return result;
554 }
555
556 void iwm_debugfs_exit(struct iwm_priv *iwm)
557 {
558 int i;
559
560 for (i = 0; i < __IWM_DM_NR; i++)
561 debugfs_remove(iwm->dbg.dbg_module_dentries[i]);
562
563 debugfs_remove(iwm->dbg.dbg_modules_dentry);
564 debugfs_remove(iwm->dbg.dbg_level_dentry);
565 debugfs_remove(iwm->dbg.txq_dentry);
566 debugfs_remove(iwm->dbg.tx_credit_dentry);
567 debugfs_remove(iwm->dbg.rx_ticket_dentry);
568 debugfs_remove(iwm->dbg.fw_err_dentry);
569 if (iwm->bus_ops->debugfs_exit)
570 iwm->bus_ops->debugfs_exit(iwm);
571
572 debugfs_remove(iwm->dbg.busdir);
573 debugfs_remove(iwm->dbg.dbgdir);
574 debugfs_remove(iwm->dbg.txdir);
575 debugfs_remove(iwm->dbg.rxdir);
576 debugfs_remove(iwm->dbg.devdir);
577 debugfs_remove(iwm->dbg.rootdir);
578 }
kernel-based virtual machine