1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
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
33static 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) \
49do { \
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
58static 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
66static 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}
78DEFINE_SIMPLE_ATTRIBUTE(fops_iwm_dbg_level,
79 iwm_debugfs_u32_read, iwm_debugfs_dbg_level_write,
80 "%llu\n");
81
82static 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_bit(bit, &iwm->dbg.dbg_modules, __IWM_DM_NR)
93 iwm->dbg.dbg_module[bit] = iwm->dbg.dbg_level;
94
95 return 0;
96}
97DEFINE_SIMPLE_ATTRIBUTE(fops_iwm_dbg_modules,
98 iwm_debugfs_u32_read, iwm_debugfs_dbg_modules_write,
99 "%llu\n");
100
101static int iwm_generic_open(struct inode *inode, struct file *filp)
102{
103 filp->private_data = inode->i_private;
104 return 0;
105}
106
107
108static 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
163 ret = simple_read_from_buffer(buffer, len, ppos, buf, buf_len);
164 kfree(buf);
165
166 return ret;
167}
168
169static ssize_t iwm_debugfs_tx_credit_read(struct file *filp,
170 char __user *buffer,
171 size_t count, loff_t *ppos)
172{
173 struct iwm_priv *iwm = filp->private_data;
174 struct iwm_tx_credit *credit = &iwm->tx_credit;
175 char *buf;
176 int i, buf_len = 4096;
177 size_t len = 0;
178 ssize_t ret;
179
180 if (*ppos != 0)
181 return 0;
182 if (count < sizeof(buf))
183 return -ENOSPC;
184
185 buf = kzalloc(buf_len, GFP_KERNEL);
186 if (!buf)
187 return -ENOMEM;
188
189 len += snprintf(buf + len, buf_len - len,
190 "NR pools: %d\n", credit->pool_nr);
191 len += snprintf(buf + len, buf_len - len,
192 "pools map: 0x%lx\n", credit->full_pools_map);
193
194 len += snprintf(buf + len, buf_len - len, "\n### POOLS ###\n");
195 for (i = 0; i < IWM_MACS_OUT_GROUPS; i++) {
196 len += snprintf(buf + len, buf_len - len,
197 "pools entry #%d\n", i);
198 len += snprintf(buf + len, buf_len - len,
199 "\tid: %d\n",
200 credit->pools[i].id);
201 len += snprintf(buf + len, buf_len - len,
202 "\tsid: %d\n",
203 credit->pools[i].sid);
204 len += snprintf(buf + len, buf_len - len,
205 "\tmin_pages: %d\n",
206 credit->pools[i].min_pages);
207 len += snprintf(buf + len, buf_len - len,
208 "\tmax_pages: %d\n",
209 credit->pools[i].max_pages);
210 len += snprintf(buf + len, buf_len - len,
211 "\talloc_pages: %d\n",
212 credit->pools[i].alloc_pages);
213 len += snprintf(buf + len, buf_len - len,
214 "\tfreed_pages: %d\n",
215 credit->pools[i].total_freed_pages);
216 }
217
218 len += snprintf(buf + len, buf_len - len, "\n### SPOOLS ###\n");
219 for (i = 0; i < IWM_MACS_OUT_SGROUPS; i++) {
220 len += snprintf(buf + len, buf_len - len,
221 "spools entry #%d\n", i);
222 len += snprintf(buf + len, buf_len - len,
223 "\tid: %d\n",
224 credit->spools[i].id);
225 len += snprintf(buf + len, buf_len - len,
226 "\tmax_pages: %d\n",
227 credit->spools[i].max_pages);
228 len += snprintf(buf + len, buf_len - len,
229 "\talloc_pages: %d\n",
230 credit->spools[i].alloc_pages);
231
232 }
233
234 ret = simple_read_from_buffer(buffer, len, ppos, buf, buf_len);
235 kfree(buf);
236
237 return ret;
238}
239
240static ssize_t iwm_debugfs_rx_ticket_read(struct file *filp,
241 char __user *buffer,
242 size_t count, loff_t *ppos)
243{
244 struct iwm_priv *iwm = filp->private_data;
245 struct iwm_rx_ticket_node *ticket, *next;
246 char *buf;
247 int buf_len = 4096, i;
248 size_t len = 0;
249 ssize_t ret;
250
251 if (*ppos != 0)
252 return 0;
253 if (count < sizeof(buf))
254 return -ENOSPC;
255
256 buf = kzalloc(buf_len, GFP_KERNEL);
257 if (!buf)
258 return -ENOMEM;
259
260 list_for_each_entry_safe(ticket, next, &iwm->rx_tickets, node) {
261 len += snprintf(buf + len, buf_len - len, "Ticket #%d\n",
262 ticket->ticket->id);
263 len += snprintf(buf + len, buf_len - len, "\taction: 0x%x\n",
264 ticket->ticket->action);
265 len += snprintf(buf + len, buf_len - len, "\tflags: 0x%x\n",
266 ticket->ticket->flags);
267 }
268
269 for (i = 0; i < IWM_RX_ID_HASH; i++) {
270 struct iwm_rx_packet *packet, *nxt;
271 struct list_head *pkt_list = &iwm->rx_packets[i];
272 if (!list_empty(pkt_list)) {
273 len += snprintf(buf + len, buf_len - len,
274 "Packet hash #%d\n", i);
275 list_for_each_entry_safe(packet, nxt, pkt_list, node) {
276 len += snprintf(buf + len, buf_len - len,
277 "\tPacket id: %d\n",
278 packet->id);
279 len += snprintf(buf + len, buf_len - len,
280 "\tPacket length: %lu\n",
281 packet->pkt_size);
282 }
283 }
284 }
285
286 ret = simple_read_from_buffer(buffer, len, ppos, buf, buf_len);
287 kfree(buf);
288
289 return ret;
290}
291
292static ssize_t iwm_debugfs_fw_err_read(struct file *filp,
293 char __user *buffer,
294 size_t count, loff_t *ppos)
295{
296
297 struct iwm_priv *iwm = filp->private_data;
298 char buf[512];
299 int buf_len = 512;
300 size_t len = 0;
301
302 if (*ppos != 0)
303 return 0;
304 if (count < sizeof(buf))
305 return -ENOSPC;
306
307 if (!iwm->last_fw_err)
308 return -ENOMEM;
309
310 if (iwm->last_fw_err->line_num == 0)
311 goto out;
312
313 len += snprintf(buf + len, buf_len - len, "%cMAC FW ERROR:\n",
314 (le32_to_cpu(iwm->last_fw_err->category) == UMAC_SYS_ERR_CAT_LMAC)
315 ? 'L' : 'U');
316 len += snprintf(buf + len, buf_len - len,
317 "\tCategory: %d\n",
318 le32_to_cpu(iwm->last_fw_err->category));
319
320 len += snprintf(buf + len, buf_len - len,
321 "\tStatus: 0x%x\n",
322 le32_to_cpu(iwm->last_fw_err->status));
323
324 len += snprintf(buf + len, buf_len - len,
325 "\tPC: 0x%x\n",
326 le32_to_cpu(iwm->last_fw_err->pc));
327
328 len += snprintf(buf + len, buf_len - len,
329 "\tblink1: %d\n",
330 le32_to_cpu(iwm->last_fw_err->blink1));
331
332 len += snprintf(buf + len, buf_len - len,
333 "\tblink2: %d\n",
334 le32_to_cpu(iwm->last_fw_err->blink2));
335
336 len += snprintf(buf + len, buf_len - len,
337 "\tilink1: %d\n",
338 le32_to_cpu(iwm->last_fw_err->ilink1));
339
340 len += snprintf(buf + len, buf_len - len,
341 "\tilink2: %d\n",
342 le32_to_cpu(iwm->last_fw_err->ilink2));
343
344 len += snprintf(buf + len, buf_len - len,
345 "\tData1: 0x%x\n",
346 le32_to_cpu(iwm->last_fw_err->data1));
347
348 len += snprintf(buf + len, buf_len - len,
349 "\tData2: 0x%x\n",
350 le32_to_cpu(iwm->last_fw_err->data2));
351
352 len += snprintf(buf + len, buf_len - len,
353 "\tLine number: %d\n",
354 le32_to_cpu(iwm->last_fw_err->line_num));
355
356 len += snprintf(buf + len, buf_len - len,
357 "\tUMAC status: 0x%x\n",
358 le32_to_cpu(iwm->last_fw_err->umac_status));
359
360 len += snprintf(buf + len, buf_len - len,
361 "\tLMAC status: 0x%x\n",
362 le32_to_cpu(iwm->last_fw_err->lmac_status));
363
364 len += snprintf(buf + len, buf_len - len,
365 "\tSDIO status: 0x%x\n",
366 le32_to_cpu(iwm->last_fw_err->sdio_status));
367
368out:
369
370 return simple_read_from_buffer(buffer, len, ppos, buf, buf_len);
371}
372
373static const struct file_operations iwm_debugfs_txq_fops = {
374 .owner = THIS_MODULE,
375 .open = iwm_generic_open,
376 .read = iwm_debugfs_txq_read,
377};
378
379static const struct file_operations iwm_debugfs_tx_credit_fops = {
380 .owner = THIS_MODULE,
381 .open = iwm_generic_open,
382 .read = iwm_debugfs_tx_credit_read,
383};
384
385static const struct file_operations iwm_debugfs_rx_ticket_fops = {
386 .owner = THIS_MODULE,
387 .open = iwm_generic_open,
388 .read = iwm_debugfs_rx_ticket_read,
389};
390
391static const struct file_operations iwm_debugfs_fw_err_fops = {
392 .owner = THIS_MODULE,
393 .open = iwm_generic_open,
394 .read = iwm_debugfs_fw_err_read,
395};
396
397int iwm_debugfs_init(struct iwm_priv *iwm)
398{
399 int i, result;
400 char devdir[16];
401
402 iwm->dbg.rootdir = debugfs_create_dir(KBUILD_MODNAME, NULL);
403 result = PTR_ERR(iwm->dbg.rootdir);
404 if (!result || IS_ERR(iwm->dbg.rootdir)) {
405 if (result == -ENODEV) {
406 IWM_ERR(iwm, "DebugFS (CONFIG_DEBUG_FS) not "
407 "enabled in kernel config\n");
408 result = 0;
409 }
410 IWM_ERR(iwm, "Couldn't create rootdir: %d\n", result);
411 goto error;
412 }
413
414 snprintf(devdir, sizeof(devdir), "%s", wiphy_name(iwm_to_wiphy(iwm)));
415
416 iwm->dbg.devdir = debugfs_create_dir(devdir, iwm->dbg.rootdir);
417 result = PTR_ERR(iwm->dbg.devdir);
418 if (IS_ERR(iwm->dbg.devdir) && (result != -ENODEV)) {
419 IWM_ERR(iwm, "Couldn't create devdir: %d\n", result);
420 goto error;
421 }
422
423 iwm->dbg.dbgdir = debugfs_create_dir("debug", iwm->dbg.devdir);
424 result = PTR_ERR(iwm->dbg.dbgdir);
425 if (IS_ERR(iwm->dbg.dbgdir) && (result != -ENODEV)) {
426 IWM_ERR(iwm, "Couldn't create dbgdir: %d\n", result);
427 goto error;
428 }
429
430 iwm->dbg.rxdir = debugfs_create_dir("rx", iwm->dbg.devdir);
431 result = PTR_ERR(iwm->dbg.rxdir);
432 if (IS_ERR(iwm->dbg.rxdir) && (result != -ENODEV)) {
433 IWM_ERR(iwm, "Couldn't create rx dir: %d\n", result);
434 goto error;
435 }
436
437 iwm->dbg.txdir = debugfs_create_dir("tx", iwm->dbg.devdir);
438 result = PTR_ERR(iwm->dbg.txdir);
439 if (IS_ERR(iwm->dbg.txdir) && (result != -ENODEV)) {
440 IWM_ERR(iwm, "Couldn't create tx dir: %d\n", result);
441 goto error;
442 }
443
444 iwm->dbg.busdir = debugfs_create_dir("bus", iwm->dbg.devdir);
445 result = PTR_ERR(iwm->dbg.busdir);
446 if (IS_ERR(iwm->dbg.busdir) && (result != -ENODEV)) {
447 IWM_ERR(iwm, "Couldn't create bus dir: %d\n", result);
448 goto error;
449 }
450
451 if (iwm->bus_ops->debugfs_init) {
452 result = iwm->bus_ops->debugfs_init(iwm, iwm->dbg.busdir);
453 if (result < 0) {
454 IWM_ERR(iwm, "Couldn't create bus entry: %d\n", result);
455 goto error;
456 }
457 }
458
459
460 iwm->dbg.dbg_level = IWM_DL_NONE;
461 iwm->dbg.dbg_level_dentry =
462 debugfs_create_file("level", 0200, iwm->dbg.dbgdir, iwm,
463 &fops_iwm_dbg_level);
464 result = PTR_ERR(iwm->dbg.dbg_level_dentry);
465 if (IS_ERR(iwm->dbg.dbg_level_dentry) && (result != -ENODEV)) {
466 IWM_ERR(iwm, "Couldn't create dbg_level: %d\n", result);
467 goto error;
468 }
469
470
471 iwm->dbg.dbg_modules = IWM_DM_DEFAULT;
472 iwm->dbg.dbg_modules_dentry =
473 debugfs_create_file("modules", 0200, iwm->dbg.dbgdir, iwm,
474 &fops_iwm_dbg_modules);
475 result = PTR_ERR(iwm->dbg.dbg_modules_dentry);
476 if (IS_ERR(iwm->dbg.dbg_modules_dentry) && (result != -ENODEV)) {
477 IWM_ERR(iwm, "Couldn't create dbg_modules: %d\n", result);
478 goto error;
479 }
480
481 for (i = 0; i < __IWM_DM_NR; i++)
482 add_dbg_module(iwm->dbg, iwm_debug_module[i].name,
483 iwm_debug_module[i].id, IWM_DL_DEFAULT);
484
485 iwm->dbg.txq_dentry = debugfs_create_file("queues", 0200,
486 iwm->dbg.txdir, iwm,
487 &iwm_debugfs_txq_fops);
488 result = PTR_ERR(iwm->dbg.txq_dentry);
489 if (IS_ERR(iwm->dbg.txq_dentry) && (result != -ENODEV)) {
490 IWM_ERR(iwm, "Couldn't create tx queue: %d\n", result);
491 goto error;
492 }
493
494 iwm->dbg.tx_credit_dentry = debugfs_create_file("credits", 0200,
495 iwm->dbg.txdir, iwm,
496 &iwm_debugfs_tx_credit_fops);
497 result = PTR_ERR(iwm->dbg.tx_credit_dentry);
498 if (IS_ERR(iwm->dbg.tx_credit_dentry) && (result != -ENODEV)) {
499 IWM_ERR(iwm, "Couldn't create tx credit: %d\n", result);
500 goto error;
501 }
502
503 iwm->dbg.rx_ticket_dentry = debugfs_create_file("tickets", 0200,
504 iwm->dbg.rxdir, iwm,
505 &iwm_debugfs_rx_ticket_fops);
506 result = PTR_ERR(iwm->dbg.rx_ticket_dentry);
507 if (IS_ERR(iwm->dbg.rx_ticket_dentry) && (result != -ENODEV)) {
508 IWM_ERR(iwm, "Couldn't create rx ticket: %d\n", result);
509 goto error;
510 }
511
512 iwm->dbg.fw_err_dentry = debugfs_create_file("last_fw_err", 0200,
513 iwm->dbg.dbgdir, iwm,
514 &iwm_debugfs_fw_err_fops);
515 result = PTR_ERR(iwm->dbg.fw_err_dentry);
516 if (IS_ERR(iwm->dbg.fw_err_dentry) && (result != -ENODEV)) {
517 IWM_ERR(iwm, "Couldn't create last FW err: %d\n", result);
518 goto error;
519 }
520
521
522 return 0;
523
524 error:
525 return result;
526}
527
528void iwm_debugfs_exit(struct iwm_priv *iwm)
529{
530 int i;
531
532 for (i = 0; i < __IWM_DM_NR; i++)
533 debugfs_remove(iwm->dbg.dbg_module_dentries[i]);
534
535 debugfs_remove(iwm->dbg.dbg_modules_dentry);
536 debugfs_remove(iwm->dbg.dbg_level_dentry);
537 debugfs_remove(iwm->dbg.txq_dentry);
538 debugfs_remove(iwm->dbg.tx_credit_dentry);
539 debugfs_remove(iwm->dbg.rx_ticket_dentry);
540 debugfs_remove(iwm->dbg.fw_err_dentry);
541 if (iwm->bus_ops->debugfs_exit)
542 iwm->bus_ops->debugfs_exit(iwm);
543
544 debugfs_remove(iwm->dbg.busdir);
545 debugfs_remove(iwm->dbg.dbgdir);
546 debugfs_remove(iwm->dbg.txdir);
547 debugfs_remove(iwm->dbg.rxdir);
548 debugfs_remove(iwm->dbg.devdir);
549 debugfs_remove(iwm->dbg.rootdir);
550}
551
