Merge branch 'for-2.6.30' into for-2.6.31
[linux-2.6] / drivers / net / wireless / libertas / debugfs.c
1 #include <linux/module.h>
2 #include <linux/dcache.h>
3 #include <linux/debugfs.h>
4 #include <linux/delay.h>
5 #include <linux/mm.h>
6 #include <linux/string.h>
7 #include <net/iw_handler.h>
8 #include <net/lib80211.h>
9
10 #include "dev.h"
11 #include "decl.h"
12 #include "host.h"
13 #include "debugfs.h"
14 #include "cmd.h"
15
16 static struct dentry *lbs_dir;
17 static char *szStates[] = {
18         "Connected",
19         "Disconnected"
20 };
21
22 #ifdef PROC_DEBUG
23 static void lbs_debug_init(struct lbs_private *priv);
24 #endif
25
26 static int open_file_generic(struct inode *inode, struct file *file)
27 {
28         file->private_data = inode->i_private;
29         return 0;
30 }
31
32 static ssize_t write_file_dummy(struct file *file, const char __user *buf,
33                                 size_t count, loff_t *ppos)
34 {
35         return -EINVAL;
36 }
37
38 static const size_t len = PAGE_SIZE;
39
40 static ssize_t lbs_dev_info(struct file *file, char __user *userbuf,
41                                   size_t count, loff_t *ppos)
42 {
43         struct lbs_private *priv = file->private_data;
44         size_t pos = 0;
45         unsigned long addr = get_zeroed_page(GFP_KERNEL);
46         char *buf = (char *)addr;
47         ssize_t res;
48
49         pos += snprintf(buf+pos, len-pos, "state = %s\n",
50                                 szStates[priv->connect_status]);
51         pos += snprintf(buf+pos, len-pos, "region_code = %02x\n",
52                                 (u32) priv->regioncode);
53
54         res = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
55
56         free_page(addr);
57         return res;
58 }
59
60
61 static ssize_t lbs_getscantable(struct file *file, char __user *userbuf,
62                                   size_t count, loff_t *ppos)
63 {
64         struct lbs_private *priv = file->private_data;
65         size_t pos = 0;
66         int numscansdone = 0, res;
67         unsigned long addr = get_zeroed_page(GFP_KERNEL);
68         char *buf = (char *)addr;
69         DECLARE_SSID_BUF(ssid);
70         struct bss_descriptor * iter_bss;
71
72         pos += snprintf(buf+pos, len-pos,
73                 "# | ch  | rssi |       bssid       |   cap    | Qual | SSID \n");
74
75         mutex_lock(&priv->lock);
76         list_for_each_entry (iter_bss, &priv->network_list, list) {
77                 u16 ibss = (iter_bss->capability & WLAN_CAPABILITY_IBSS);
78                 u16 privacy = (iter_bss->capability & WLAN_CAPABILITY_PRIVACY);
79                 u16 spectrum_mgmt = (iter_bss->capability & WLAN_CAPABILITY_SPECTRUM_MGMT);
80
81                 pos += snprintf(buf+pos, len-pos, "%02u| %03d | %04d | %pM |",
82                         numscansdone, iter_bss->channel, iter_bss->rssi,
83                         iter_bss->bssid);
84                 pos += snprintf(buf+pos, len-pos, " %04x-", iter_bss->capability);
85                 pos += snprintf(buf+pos, len-pos, "%c%c%c |",
86                                 ibss ? 'A' : 'I', privacy ? 'P' : ' ',
87                                 spectrum_mgmt ? 'S' : ' ');
88                 pos += snprintf(buf+pos, len-pos, " %04d |", SCAN_RSSI(iter_bss->rssi));
89                 pos += snprintf(buf+pos, len-pos, " %s\n",
90                                 print_ssid(ssid, iter_bss->ssid,
91                                            iter_bss->ssid_len));
92
93                 numscansdone++;
94         }
95         mutex_unlock(&priv->lock);
96
97         res = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
98
99         free_page(addr);
100         return res;
101 }
102
103 static ssize_t lbs_sleepparams_write(struct file *file,
104                                 const char __user *user_buf, size_t count,
105                                 loff_t *ppos)
106 {
107         struct lbs_private *priv = file->private_data;
108         ssize_t buf_size, ret;
109         struct sleep_params sp;
110         int p1, p2, p3, p4, p5, p6;
111         unsigned long addr = get_zeroed_page(GFP_KERNEL);
112         char *buf = (char *)addr;
113
114         buf_size = min(count, len - 1);
115         if (copy_from_user(buf, user_buf, buf_size)) {
116                 ret = -EFAULT;
117                 goto out_unlock;
118         }
119         ret = sscanf(buf, "%d %d %d %d %d %d", &p1, &p2, &p3, &p4, &p5, &p6);
120         if (ret != 6) {
121                 ret = -EINVAL;
122                 goto out_unlock;
123         }
124         sp.sp_error = p1;
125         sp.sp_offset = p2;
126         sp.sp_stabletime = p3;
127         sp.sp_calcontrol = p4;
128         sp.sp_extsleepclk = p5;
129         sp.sp_reserved = p6;
130
131         ret = lbs_cmd_802_11_sleep_params(priv, CMD_ACT_SET, &sp);
132         if (!ret)
133                 ret = count;
134         else if (ret > 0)
135                 ret = -EINVAL;
136
137 out_unlock:
138         free_page(addr);
139         return ret;
140 }
141
142 static ssize_t lbs_sleepparams_read(struct file *file, char __user *userbuf,
143                                   size_t count, loff_t *ppos)
144 {
145         struct lbs_private *priv = file->private_data;
146         ssize_t ret;
147         size_t pos = 0;
148         struct sleep_params sp;
149         unsigned long addr = get_zeroed_page(GFP_KERNEL);
150         char *buf = (char *)addr;
151
152         ret = lbs_cmd_802_11_sleep_params(priv, CMD_ACT_GET, &sp);
153         if (ret)
154                 goto out_unlock;
155
156         pos += snprintf(buf, len, "%d %d %d %d %d %d\n", sp.sp_error,
157                         sp.sp_offset, sp.sp_stabletime,
158                         sp.sp_calcontrol, sp.sp_extsleepclk,
159                         sp.sp_reserved);
160
161         ret = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
162
163 out_unlock:
164         free_page(addr);
165         return ret;
166 }
167
168 /*
169  * When calling CMD_802_11_SUBSCRIBE_EVENT with CMD_ACT_GET, me might
170  * get a bunch of vendor-specific TLVs (a.k.a. IEs) back from the
171  * firmware. Here's an example:
172  *      04 01 02 00 00 00 05 01 02 00 00 00 06 01 02 00
173  *      00 00 07 01 02 00 3c 00 00 00 00 00 00 00 03 03
174  *      00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
175  *
176  * The 04 01 is the TLV type (here TLV_TYPE_RSSI_LOW), 02 00 is the length,
177  * 00 00 are the data bytes of this TLV. For this TLV, their meaning is
178  * defined in mrvlietypes_thresholds
179  *
180  * This function searches in this TLV data chunk for a given TLV type
181  * and returns a pointer to the first data byte of the TLV, or to NULL
182  * if the TLV hasn't been found.
183  */
184 static void *lbs_tlv_find(uint16_t tlv_type, const uint8_t *tlv, uint16_t size)
185 {
186         struct mrvlietypesheader *tlv_h;
187         uint16_t length;
188         ssize_t pos = 0;
189
190         while (pos < size) {
191                 tlv_h = (struct mrvlietypesheader *) tlv;
192                 if (!tlv_h->len)
193                         return NULL;
194                 if (tlv_h->type == cpu_to_le16(tlv_type))
195                         return tlv_h;
196                 length = le16_to_cpu(tlv_h->len) + sizeof(*tlv_h);
197                 pos += length;
198                 tlv += length;
199         }
200         return NULL;
201 }
202
203
204 static ssize_t lbs_threshold_read(uint16_t tlv_type, uint16_t event_mask,
205                                   struct file *file, char __user *userbuf,
206                                   size_t count, loff_t *ppos)
207 {
208         struct cmd_ds_802_11_subscribe_event *subscribed;
209         struct mrvlietypes_thresholds *got;
210         struct lbs_private *priv = file->private_data;
211         ssize_t ret = 0;
212         size_t pos = 0;
213         char *buf;
214         u8 value;
215         u8 freq;
216         int events = 0;
217
218         buf = (char *)get_zeroed_page(GFP_KERNEL);
219         if (!buf)
220                 return -ENOMEM;
221
222         subscribed = kzalloc(sizeof(*subscribed), GFP_KERNEL);
223         if (!subscribed) {
224                 ret = -ENOMEM;
225                 goto out_page;
226         }
227
228         subscribed->hdr.size = cpu_to_le16(sizeof(*subscribed));
229         subscribed->action = cpu_to_le16(CMD_ACT_GET);
230
231         ret = lbs_cmd_with_response(priv, CMD_802_11_SUBSCRIBE_EVENT, subscribed);
232         if (ret)
233                 goto out_cmd;
234
235         got = lbs_tlv_find(tlv_type, subscribed->tlv, sizeof(subscribed->tlv));
236         if (got) {
237                 value = got->value;
238                 freq  = got->freq;
239                 events = le16_to_cpu(subscribed->events);
240
241                 pos += snprintf(buf, len, "%d %d %d\n", value, freq,
242                                 !!(events & event_mask));
243         }
244
245         ret = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
246
247  out_cmd:
248         kfree(subscribed);
249
250  out_page:
251         free_page((unsigned long)buf);
252         return ret;
253 }
254
255
256 static ssize_t lbs_threshold_write(uint16_t tlv_type, uint16_t event_mask,
257                                    struct file *file,
258                                    const char __user *userbuf, size_t count,
259                                    loff_t *ppos)
260 {
261         struct cmd_ds_802_11_subscribe_event *events;
262         struct mrvlietypes_thresholds *tlv;
263         struct lbs_private *priv = file->private_data;
264         ssize_t buf_size;
265         int value, freq, new_mask;
266         uint16_t curr_mask;
267         char *buf;
268         int ret;
269
270         buf = (char *)get_zeroed_page(GFP_KERNEL);
271         if (!buf)
272                 return -ENOMEM;
273
274         buf_size = min(count, len - 1);
275         if (copy_from_user(buf, userbuf, buf_size)) {
276                 ret = -EFAULT;
277                 goto out_page;
278         }
279         ret = sscanf(buf, "%d %d %d", &value, &freq, &new_mask);
280         if (ret != 3) {
281                 ret = -EINVAL;
282                 goto out_page;
283         }
284         events = kzalloc(sizeof(*events), GFP_KERNEL);
285         if (!events) {
286                 ret = -ENOMEM;
287                 goto out_page;
288         }
289
290         events->hdr.size = cpu_to_le16(sizeof(*events));
291         events->action = cpu_to_le16(CMD_ACT_GET);
292
293         ret = lbs_cmd_with_response(priv, CMD_802_11_SUBSCRIBE_EVENT, events);
294         if (ret)
295                 goto out_events;
296
297         curr_mask = le16_to_cpu(events->events);
298
299         if (new_mask)
300                 new_mask = curr_mask | event_mask;
301         else
302                 new_mask = curr_mask & ~event_mask;
303
304         /* Now everything is set and we can send stuff down to the firmware */
305
306         tlv = (void *)events->tlv;
307
308         events->action = cpu_to_le16(CMD_ACT_SET);
309         events->events = cpu_to_le16(new_mask);
310         tlv->header.type = cpu_to_le16(tlv_type);
311         tlv->header.len = cpu_to_le16(sizeof(*tlv) - sizeof(tlv->header));
312         tlv->value = value;
313         if (tlv_type != TLV_TYPE_BCNMISS)
314                 tlv->freq = freq;
315
316         /* The command header, the action, the event mask, and one TLV */
317         events->hdr.size = cpu_to_le16(sizeof(events->hdr) + 4 + sizeof(*tlv));
318
319         ret = lbs_cmd_with_response(priv, CMD_802_11_SUBSCRIBE_EVENT, events);
320
321         if (!ret)
322                 ret = count;
323  out_events:
324         kfree(events);
325  out_page:
326         free_page((unsigned long)buf);
327         return ret;
328 }
329
330
331 static ssize_t lbs_lowrssi_read(struct file *file, char __user *userbuf,
332                                 size_t count, loff_t *ppos)
333 {
334         return lbs_threshold_read(TLV_TYPE_RSSI_LOW, CMD_SUBSCRIBE_RSSI_LOW,
335                                   file, userbuf, count, ppos);
336 }
337
338
339 static ssize_t lbs_lowrssi_write(struct file *file, const char __user *userbuf,
340                                  size_t count, loff_t *ppos)
341 {
342         return lbs_threshold_write(TLV_TYPE_RSSI_LOW, CMD_SUBSCRIBE_RSSI_LOW,
343                                    file, userbuf, count, ppos);
344 }
345
346
347 static ssize_t lbs_lowsnr_read(struct file *file, char __user *userbuf,
348                                size_t count, loff_t *ppos)
349 {
350         return lbs_threshold_read(TLV_TYPE_SNR_LOW, CMD_SUBSCRIBE_SNR_LOW,
351                                   file, userbuf, count, ppos);
352 }
353
354
355 static ssize_t lbs_lowsnr_write(struct file *file, const char __user *userbuf,
356                                 size_t count, loff_t *ppos)
357 {
358         return lbs_threshold_write(TLV_TYPE_SNR_LOW, CMD_SUBSCRIBE_SNR_LOW,
359                                    file, userbuf, count, ppos);
360 }
361
362
363 static ssize_t lbs_failcount_read(struct file *file, char __user *userbuf,
364                                   size_t count, loff_t *ppos)
365 {
366         return lbs_threshold_read(TLV_TYPE_FAILCOUNT, CMD_SUBSCRIBE_FAILCOUNT,
367                                   file, userbuf, count, ppos);
368 }
369
370
371 static ssize_t lbs_failcount_write(struct file *file, const char __user *userbuf,
372                                    size_t count, loff_t *ppos)
373 {
374         return lbs_threshold_write(TLV_TYPE_FAILCOUNT, CMD_SUBSCRIBE_FAILCOUNT,
375                                    file, userbuf, count, ppos);
376 }
377
378
379 static ssize_t lbs_highrssi_read(struct file *file, char __user *userbuf,
380                                  size_t count, loff_t *ppos)
381 {
382         return lbs_threshold_read(TLV_TYPE_RSSI_HIGH, CMD_SUBSCRIBE_RSSI_HIGH,
383                                   file, userbuf, count, ppos);
384 }
385
386
387 static ssize_t lbs_highrssi_write(struct file *file, const char __user *userbuf,
388                                   size_t count, loff_t *ppos)
389 {
390         return lbs_threshold_write(TLV_TYPE_RSSI_HIGH, CMD_SUBSCRIBE_RSSI_HIGH,
391                                    file, userbuf, count, ppos);
392 }
393
394
395 static ssize_t lbs_highsnr_read(struct file *file, char __user *userbuf,
396                                 size_t count, loff_t *ppos)
397 {
398         return lbs_threshold_read(TLV_TYPE_SNR_HIGH, CMD_SUBSCRIBE_SNR_HIGH,
399                                   file, userbuf, count, ppos);
400 }
401
402
403 static ssize_t lbs_highsnr_write(struct file *file, const char __user *userbuf,
404                                  size_t count, loff_t *ppos)
405 {
406         return lbs_threshold_write(TLV_TYPE_SNR_HIGH, CMD_SUBSCRIBE_SNR_HIGH,
407                                    file, userbuf, count, ppos);
408 }
409
410 static ssize_t lbs_bcnmiss_read(struct file *file, char __user *userbuf,
411                                 size_t count, loff_t *ppos)
412 {
413         return lbs_threshold_read(TLV_TYPE_BCNMISS, CMD_SUBSCRIBE_BCNMISS,
414                                   file, userbuf, count, ppos);
415 }
416
417
418 static ssize_t lbs_bcnmiss_write(struct file *file, const char __user *userbuf,
419                                  size_t count, loff_t *ppos)
420 {
421         return lbs_threshold_write(TLV_TYPE_BCNMISS, CMD_SUBSCRIBE_BCNMISS,
422                                    file, userbuf, count, ppos);
423 }
424
425
426
427 static ssize_t lbs_rdmac_read(struct file *file, char __user *userbuf,
428                                   size_t count, loff_t *ppos)
429 {
430         struct lbs_private *priv = file->private_data;
431         struct lbs_offset_value offval;
432         ssize_t pos = 0;
433         int ret;
434         unsigned long addr = get_zeroed_page(GFP_KERNEL);
435         char *buf = (char *)addr;
436
437         offval.offset = priv->mac_offset;
438         offval.value = 0;
439
440         ret = lbs_prepare_and_send_command(priv,
441                                 CMD_MAC_REG_ACCESS, 0,
442                                 CMD_OPTION_WAITFORRSP, 0, &offval);
443         mdelay(10);
444         pos += snprintf(buf+pos, len-pos, "MAC[0x%x] = 0x%08x\n",
445                                 priv->mac_offset, priv->offsetvalue.value);
446
447         ret = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
448         free_page(addr);
449         return ret;
450 }
451
452 static ssize_t lbs_rdmac_write(struct file *file,
453                                     const char __user *userbuf,
454                                     size_t count, loff_t *ppos)
455 {
456         struct lbs_private *priv = file->private_data;
457         ssize_t res, buf_size;
458         unsigned long addr = get_zeroed_page(GFP_KERNEL);
459         char *buf = (char *)addr;
460
461         buf_size = min(count, len - 1);
462         if (copy_from_user(buf, userbuf, buf_size)) {
463                 res = -EFAULT;
464                 goto out_unlock;
465         }
466         priv->mac_offset = simple_strtoul((char *)buf, NULL, 16);
467         res = count;
468 out_unlock:
469         free_page(addr);
470         return res;
471 }
472
473 static ssize_t lbs_wrmac_write(struct file *file,
474                                     const char __user *userbuf,
475                                     size_t count, loff_t *ppos)
476 {
477
478         struct lbs_private *priv = file->private_data;
479         ssize_t res, buf_size;
480         u32 offset, value;
481         struct lbs_offset_value offval;
482         unsigned long addr = get_zeroed_page(GFP_KERNEL);
483         char *buf = (char *)addr;
484
485         buf_size = min(count, len - 1);
486         if (copy_from_user(buf, userbuf, buf_size)) {
487                 res = -EFAULT;
488                 goto out_unlock;
489         }
490         res = sscanf(buf, "%x %x", &offset, &value);
491         if (res != 2) {
492                 res = -EFAULT;
493                 goto out_unlock;
494         }
495
496         offval.offset = offset;
497         offval.value = value;
498         res = lbs_prepare_and_send_command(priv,
499                                 CMD_MAC_REG_ACCESS, 1,
500                                 CMD_OPTION_WAITFORRSP, 0, &offval);
501         mdelay(10);
502
503         res = count;
504 out_unlock:
505         free_page(addr);
506         return res;
507 }
508
509 static ssize_t lbs_rdbbp_read(struct file *file, char __user *userbuf,
510                                   size_t count, loff_t *ppos)
511 {
512         struct lbs_private *priv = file->private_data;
513         struct lbs_offset_value offval;
514         ssize_t pos = 0;
515         int ret;
516         unsigned long addr = get_zeroed_page(GFP_KERNEL);
517         char *buf = (char *)addr;
518
519         offval.offset = priv->bbp_offset;
520         offval.value = 0;
521
522         ret = lbs_prepare_and_send_command(priv,
523                                 CMD_BBP_REG_ACCESS, 0,
524                                 CMD_OPTION_WAITFORRSP, 0, &offval);
525         mdelay(10);
526         pos += snprintf(buf+pos, len-pos, "BBP[0x%x] = 0x%08x\n",
527                                 priv->bbp_offset, priv->offsetvalue.value);
528
529         ret = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
530         free_page(addr);
531
532         return ret;
533 }
534
535 static ssize_t lbs_rdbbp_write(struct file *file,
536                                     const char __user *userbuf,
537                                     size_t count, loff_t *ppos)
538 {
539         struct lbs_private *priv = file->private_data;
540         ssize_t res, buf_size;
541         unsigned long addr = get_zeroed_page(GFP_KERNEL);
542         char *buf = (char *)addr;
543
544         buf_size = min(count, len - 1);
545         if (copy_from_user(buf, userbuf, buf_size)) {
546                 res = -EFAULT;
547                 goto out_unlock;
548         }
549         priv->bbp_offset = simple_strtoul((char *)buf, NULL, 16);
550         res = count;
551 out_unlock:
552         free_page(addr);
553         return res;
554 }
555
556 static ssize_t lbs_wrbbp_write(struct file *file,
557                                     const char __user *userbuf,
558                                     size_t count, loff_t *ppos)
559 {
560
561         struct lbs_private *priv = file->private_data;
562         ssize_t res, buf_size;
563         u32 offset, value;
564         struct lbs_offset_value offval;
565         unsigned long addr = get_zeroed_page(GFP_KERNEL);
566         char *buf = (char *)addr;
567
568         buf_size = min(count, len - 1);
569         if (copy_from_user(buf, userbuf, buf_size)) {
570                 res = -EFAULT;
571                 goto out_unlock;
572         }
573         res = sscanf(buf, "%x %x", &offset, &value);
574         if (res != 2) {
575                 res = -EFAULT;
576                 goto out_unlock;
577         }
578
579         offval.offset = offset;
580         offval.value = value;
581         res = lbs_prepare_and_send_command(priv,
582                                 CMD_BBP_REG_ACCESS, 1,
583                                 CMD_OPTION_WAITFORRSP, 0, &offval);
584         mdelay(10);
585
586         res = count;
587 out_unlock:
588         free_page(addr);
589         return res;
590 }
591
592 static ssize_t lbs_rdrf_read(struct file *file, char __user *userbuf,
593                                   size_t count, loff_t *ppos)
594 {
595         struct lbs_private *priv = file->private_data;
596         struct lbs_offset_value offval;
597         ssize_t pos = 0;
598         int ret;
599         unsigned long addr = get_zeroed_page(GFP_KERNEL);
600         char *buf = (char *)addr;
601
602         offval.offset = priv->rf_offset;
603         offval.value = 0;
604
605         ret = lbs_prepare_and_send_command(priv,
606                                 CMD_RF_REG_ACCESS, 0,
607                                 CMD_OPTION_WAITFORRSP, 0, &offval);
608         mdelay(10);
609         pos += snprintf(buf+pos, len-pos, "RF[0x%x] = 0x%08x\n",
610                                 priv->rf_offset, priv->offsetvalue.value);
611
612         ret = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
613         free_page(addr);
614
615         return ret;
616 }
617
618 static ssize_t lbs_rdrf_write(struct file *file,
619                                     const char __user *userbuf,
620                                     size_t count, loff_t *ppos)
621 {
622         struct lbs_private *priv = file->private_data;
623         ssize_t res, buf_size;
624         unsigned long addr = get_zeroed_page(GFP_KERNEL);
625         char *buf = (char *)addr;
626
627         buf_size = min(count, len - 1);
628         if (copy_from_user(buf, userbuf, buf_size)) {
629                 res = -EFAULT;
630                 goto out_unlock;
631         }
632         priv->rf_offset = simple_strtoul(buf, NULL, 16);
633         res = count;
634 out_unlock:
635         free_page(addr);
636         return res;
637 }
638
639 static ssize_t lbs_wrrf_write(struct file *file,
640                                     const char __user *userbuf,
641                                     size_t count, loff_t *ppos)
642 {
643
644         struct lbs_private *priv = file->private_data;
645         ssize_t res, buf_size;
646         u32 offset, value;
647         struct lbs_offset_value offval;
648         unsigned long addr = get_zeroed_page(GFP_KERNEL);
649         char *buf = (char *)addr;
650
651         buf_size = min(count, len - 1);
652         if (copy_from_user(buf, userbuf, buf_size)) {
653                 res = -EFAULT;
654                 goto out_unlock;
655         }
656         res = sscanf(buf, "%x %x", &offset, &value);
657         if (res != 2) {
658                 res = -EFAULT;
659                 goto out_unlock;
660         }
661
662         offval.offset = offset;
663         offval.value = value;
664         res = lbs_prepare_and_send_command(priv,
665                                 CMD_RF_REG_ACCESS, 1,
666                                 CMD_OPTION_WAITFORRSP, 0, &offval);
667         mdelay(10);
668
669         res = count;
670 out_unlock:
671         free_page(addr);
672         return res;
673 }
674
675 #define FOPS(fread, fwrite) { \
676         .owner = THIS_MODULE, \
677         .open = open_file_generic, \
678         .read = (fread), \
679         .write = (fwrite), \
680 }
681
682 struct lbs_debugfs_files {
683         const char *name;
684         int perm;
685         struct file_operations fops;
686 };
687
688 static const struct lbs_debugfs_files debugfs_files[] = {
689         { "info", 0444, FOPS(lbs_dev_info, write_file_dummy), },
690         { "getscantable", 0444, FOPS(lbs_getscantable,
691                                         write_file_dummy), },
692         { "sleepparams", 0644, FOPS(lbs_sleepparams_read,
693                                 lbs_sleepparams_write), },
694 };
695
696 static const struct lbs_debugfs_files debugfs_events_files[] = {
697         {"low_rssi", 0644, FOPS(lbs_lowrssi_read,
698                                 lbs_lowrssi_write), },
699         {"low_snr", 0644, FOPS(lbs_lowsnr_read,
700                                 lbs_lowsnr_write), },
701         {"failure_count", 0644, FOPS(lbs_failcount_read,
702                                 lbs_failcount_write), },
703         {"beacon_missed", 0644, FOPS(lbs_bcnmiss_read,
704                                 lbs_bcnmiss_write), },
705         {"high_rssi", 0644, FOPS(lbs_highrssi_read,
706                                 lbs_highrssi_write), },
707         {"high_snr", 0644, FOPS(lbs_highsnr_read,
708                                 lbs_highsnr_write), },
709 };
710
711 static const struct lbs_debugfs_files debugfs_regs_files[] = {
712         {"rdmac", 0644, FOPS(lbs_rdmac_read, lbs_rdmac_write), },
713         {"wrmac", 0600, FOPS(NULL, lbs_wrmac_write), },
714         {"rdbbp", 0644, FOPS(lbs_rdbbp_read, lbs_rdbbp_write), },
715         {"wrbbp", 0600, FOPS(NULL, lbs_wrbbp_write), },
716         {"rdrf", 0644, FOPS(lbs_rdrf_read, lbs_rdrf_write), },
717         {"wrrf", 0600, FOPS(NULL, lbs_wrrf_write), },
718 };
719
720 void lbs_debugfs_init(void)
721 {
722         if (!lbs_dir)
723                 lbs_dir = debugfs_create_dir("lbs_wireless", NULL);
724
725         return;
726 }
727
728 void lbs_debugfs_remove(void)
729 {
730         if (lbs_dir)
731                  debugfs_remove(lbs_dir);
732         return;
733 }
734
735 void lbs_debugfs_init_one(struct lbs_private *priv, struct net_device *dev)
736 {
737         int i;
738         const struct lbs_debugfs_files *files;
739         if (!lbs_dir)
740                 goto exit;
741
742         priv->debugfs_dir = debugfs_create_dir(dev->name, lbs_dir);
743         if (!priv->debugfs_dir)
744                 goto exit;
745
746         for (i=0; i<ARRAY_SIZE(debugfs_files); i++) {
747                 files = &debugfs_files[i];
748                 priv->debugfs_files[i] = debugfs_create_file(files->name,
749                                                              files->perm,
750                                                              priv->debugfs_dir,
751                                                              priv,
752                                                              &files->fops);
753         }
754
755         priv->events_dir = debugfs_create_dir("subscribed_events", priv->debugfs_dir);
756         if (!priv->events_dir)
757                 goto exit;
758
759         for (i=0; i<ARRAY_SIZE(debugfs_events_files); i++) {
760                 files = &debugfs_events_files[i];
761                 priv->debugfs_events_files[i] = debugfs_create_file(files->name,
762                                                              files->perm,
763                                                              priv->events_dir,
764                                                              priv,
765                                                              &files->fops);
766         }
767
768         priv->regs_dir = debugfs_create_dir("registers", priv->debugfs_dir);
769         if (!priv->regs_dir)
770                 goto exit;
771
772         for (i=0; i<ARRAY_SIZE(debugfs_regs_files); i++) {
773                 files = &debugfs_regs_files[i];
774                 priv->debugfs_regs_files[i] = debugfs_create_file(files->name,
775                                                              files->perm,
776                                                              priv->regs_dir,
777                                                              priv,
778                                                              &files->fops);
779         }
780
781 #ifdef PROC_DEBUG
782         lbs_debug_init(priv);
783 #endif
784 exit:
785         return;
786 }
787
788 void lbs_debugfs_remove_one(struct lbs_private *priv)
789 {
790         int i;
791
792         for(i=0; i<ARRAY_SIZE(debugfs_regs_files); i++)
793                 debugfs_remove(priv->debugfs_regs_files[i]);
794
795         debugfs_remove(priv->regs_dir);
796
797         for(i=0; i<ARRAY_SIZE(debugfs_events_files); i++)
798                 debugfs_remove(priv->debugfs_events_files[i]);
799
800         debugfs_remove(priv->events_dir);
801 #ifdef PROC_DEBUG
802         debugfs_remove(priv->debugfs_debug);
803 #endif
804         for(i=0; i<ARRAY_SIZE(debugfs_files); i++)
805                 debugfs_remove(priv->debugfs_files[i]);
806         debugfs_remove(priv->debugfs_dir);
807 }
808
809
810
811 /* debug entry */
812
813 #ifdef PROC_DEBUG
814
815 #define item_size(n)    (FIELD_SIZEOF(struct lbs_private, n))
816 #define item_addr(n)    (offsetof(struct lbs_private, n))
817
818
819 struct debug_data {
820         char name[32];
821         u32 size;
822         size_t addr;
823 };
824
825 /* To debug any member of struct lbs_private, simply add one line here.
826  */
827 static struct debug_data items[] = {
828         {"psmode", item_size(psmode), item_addr(psmode)},
829         {"psstate", item_size(psstate), item_addr(psstate)},
830 };
831
832 static int num_of_items = ARRAY_SIZE(items);
833
834 /**
835  *  @brief proc read function
836  *
837  *  @param page    pointer to buffer
838  *  @param s       read data starting position
839  *  @param off     offset
840  *  @param cnt     counter
841  *  @param eof     end of file flag
842  *  @param data    data to output
843  *  @return        number of output data
844  */
845 static ssize_t lbs_debugfs_read(struct file *file, char __user *userbuf,
846                         size_t count, loff_t *ppos)
847 {
848         int val = 0;
849         size_t pos = 0;
850         ssize_t res;
851         char *p;
852         int i;
853         struct debug_data *d;
854         unsigned long addr = get_zeroed_page(GFP_KERNEL);
855         char *buf = (char *)addr;
856
857         p = buf;
858
859         d = (struct debug_data *)file->private_data;
860
861         for (i = 0; i < num_of_items; i++) {
862                 if (d[i].size == 1)
863                         val = *((u8 *) d[i].addr);
864                 else if (d[i].size == 2)
865                         val = *((u16 *) d[i].addr);
866                 else if (d[i].size == 4)
867                         val = *((u32 *) d[i].addr);
868                 else if (d[i].size == 8)
869                         val = *((u64 *) d[i].addr);
870
871                 pos += sprintf(p + pos, "%s=%d\n", d[i].name, val);
872         }
873
874         res = simple_read_from_buffer(userbuf, count, ppos, p, pos);
875
876         free_page(addr);
877         return res;
878 }
879
880 /**
881  *  @brief proc write function
882  *
883  *  @param f       file pointer
884  *  @param buf     pointer to data buffer
885  *  @param cnt     data number to write
886  *  @param data    data to write
887  *  @return        number of data
888  */
889 static ssize_t lbs_debugfs_write(struct file *f, const char __user *buf,
890                             size_t cnt, loff_t *ppos)
891 {
892         int r, i;
893         char *pdata;
894         char *p;
895         char *p0;
896         char *p1;
897         char *p2;
898         struct debug_data *d = (struct debug_data *)f->private_data;
899
900         pdata = kmalloc(cnt, GFP_KERNEL);
901         if (pdata == NULL)
902                 return 0;
903
904         if (copy_from_user(pdata, buf, cnt)) {
905                 lbs_deb_debugfs("Copy from user failed\n");
906                 kfree(pdata);
907                 return 0;
908         }
909
910         p0 = pdata;
911         for (i = 0; i < num_of_items; i++) {
912                 do {
913                         p = strstr(p0, d[i].name);
914                         if (p == NULL)
915                                 break;
916                         p1 = strchr(p, '\n');
917                         if (p1 == NULL)
918                                 break;
919                         p0 = p1++;
920                         p2 = strchr(p, '=');
921                         if (!p2)
922                                 break;
923                         p2++;
924                         r = simple_strtoul(p2, NULL, 0);
925                         if (d[i].size == 1)
926                                 *((u8 *) d[i].addr) = (u8) r;
927                         else if (d[i].size == 2)
928                                 *((u16 *) d[i].addr) = (u16) r;
929                         else if (d[i].size == 4)
930                                 *((u32 *) d[i].addr) = (u32) r;
931                         else if (d[i].size == 8)
932                                 *((u64 *) d[i].addr) = (u64) r;
933                         break;
934                 } while (1);
935         }
936         kfree(pdata);
937
938         return (ssize_t)cnt;
939 }
940
941 static const struct file_operations lbs_debug_fops = {
942         .owner = THIS_MODULE,
943         .open = open_file_generic,
944         .write = lbs_debugfs_write,
945         .read = lbs_debugfs_read,
946 };
947
948 /**
949  *  @brief create debug proc file
950  *
951  *  @param priv    pointer struct lbs_private
952  *  @param dev     pointer net_device
953  *  @return        N/A
954  */
955 static void lbs_debug_init(struct lbs_private *priv)
956 {
957         int i;
958
959         if (!priv->debugfs_dir)
960                 return;
961
962         for (i = 0; i < num_of_items; i++)
963                 items[i].addr += (size_t) priv;
964
965         priv->debugfs_debug = debugfs_create_file("debug", 0644,
966                                                   priv->debugfs_dir, &items[0],
967                                                   &lbs_debug_fops);
968 }
969 #endif