1 #include <linux/dcache.h>
2 #include <linux/debugfs.h>
3 #include <linux/delay.h>
4 #include <linux/hardirq.h>
5 #include <linux/mm.h>
6 #include <linux/string.h>
7 #include <linux/slab.h>
8 #include <linux/export.h>
9
10 #include "decl.h"
11 #include "cmd.h"
12 #include "debugfs.h"
13
14 static struct dentry *lbs_dir;
15 static char *szStates[] = {
16 "Connected",
17 "Disconnected"
18 };
19
20 #ifdef PROC_DEBUG
21 static void lbs_debug_init(struct lbs_private *priv);
22 #endif
23
write_file_dummy(struct file * file,const char __user * buf,size_t count,loff_t * ppos)24 static ssize_t write_file_dummy(struct file *file, const char __user *buf,
25 size_t count, loff_t *ppos)
26 {
27 return -EINVAL;
28 }
29
30 static const size_t len = PAGE_SIZE;
31
lbs_dev_info(struct file * file,char __user * userbuf,size_t count,loff_t * ppos)32 static ssize_t lbs_dev_info(struct file *file, char __user *userbuf,
33 size_t count, loff_t *ppos)
34 {
35 struct lbs_private *priv = file->private_data;
36 size_t pos = 0;
37 unsigned long addr = get_zeroed_page(GFP_KERNEL);
38 char *buf = (char *)addr;
39 ssize_t res;
40 if (!buf)
41 return -ENOMEM;
42
43 pos += snprintf(buf+pos, len-pos, "state = %s\n",
44 szStates[priv->connect_status]);
45 pos += snprintf(buf+pos, len-pos, "region_code = %02x\n",
46 (u32) priv->regioncode);
47
48 res = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
49
50 free_page(addr);
51 return res;
52 }
53
lbs_sleepparams_write(struct file * file,const char __user * user_buf,size_t count,loff_t * ppos)54 static ssize_t lbs_sleepparams_write(struct file *file,
55 const char __user *user_buf, size_t count,
56 loff_t *ppos)
57 {
58 struct lbs_private *priv = file->private_data;
59 ssize_t buf_size, ret;
60 struct sleep_params sp;
61 int p1, p2, p3, p4, p5, p6;
62 unsigned long addr = get_zeroed_page(GFP_KERNEL);
63 char *buf = (char *)addr;
64 if (!buf)
65 return -ENOMEM;
66
67 buf_size = min(count, len - 1);
68 if (copy_from_user(buf, user_buf, buf_size)) {
69 ret = -EFAULT;
70 goto out_unlock;
71 }
72 ret = sscanf(buf, "%d %d %d %d %d %d", &p1, &p2, &p3, &p4, &p5, &p6);
73 if (ret != 6) {
74 ret = -EINVAL;
75 goto out_unlock;
76 }
77 sp.sp_error = p1;
78 sp.sp_offset = p2;
79 sp.sp_stabletime = p3;
80 sp.sp_calcontrol = p4;
81 sp.sp_extsleepclk = p5;
82 sp.sp_reserved = p6;
83
84 ret = lbs_cmd_802_11_sleep_params(priv, CMD_ACT_SET, &sp);
85 if (!ret)
86 ret = count;
87 else if (ret > 0)
88 ret = -EINVAL;
89
90 out_unlock:
91 free_page(addr);
92 return ret;
93 }
94
lbs_sleepparams_read(struct file * file,char __user * userbuf,size_t count,loff_t * ppos)95 static ssize_t lbs_sleepparams_read(struct file *file, char __user *userbuf,
96 size_t count, loff_t *ppos)
97 {
98 struct lbs_private *priv = file->private_data;
99 ssize_t ret;
100 size_t pos = 0;
101 struct sleep_params sp;
102 unsigned long addr = get_zeroed_page(GFP_KERNEL);
103 char *buf = (char *)addr;
104 if (!buf)
105 return -ENOMEM;
106
107 ret = lbs_cmd_802_11_sleep_params(priv, CMD_ACT_GET, &sp);
108 if (ret)
109 goto out_unlock;
110
111 pos += snprintf(buf, len, "%d %d %d %d %d %d\n", sp.sp_error,
112 sp.sp_offset, sp.sp_stabletime,
113 sp.sp_calcontrol, sp.sp_extsleepclk,
114 sp.sp_reserved);
115
116 ret = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
117
118 out_unlock:
119 free_page(addr);
120 return ret;
121 }
122
lbs_host_sleep_write(struct file * file,const char __user * user_buf,size_t count,loff_t * ppos)123 static ssize_t lbs_host_sleep_write(struct file *file,
124 const char __user *user_buf, size_t count,
125 loff_t *ppos)
126 {
127 struct lbs_private *priv = file->private_data;
128 ssize_t buf_size, ret;
129 int host_sleep;
130 unsigned long addr = get_zeroed_page(GFP_KERNEL);
131 char *buf = (char *)addr;
132 if (!buf)
133 return -ENOMEM;
134
135 buf_size = min(count, len - 1);
136 if (copy_from_user(buf, user_buf, buf_size)) {
137 ret = -EFAULT;
138 goto out_unlock;
139 }
140 ret = sscanf(buf, "%d", &host_sleep);
141 if (ret != 1) {
142 ret = -EINVAL;
143 goto out_unlock;
144 }
145
146 if (host_sleep == 0)
147 ret = lbs_set_host_sleep(priv, 0);
148 else if (host_sleep == 1) {
149 if (priv->wol_criteria == EHS_REMOVE_WAKEUP) {
150 netdev_info(priv->dev,
151 "wake parameters not configured\n");
152 ret = -EINVAL;
153 goto out_unlock;
154 }
155 ret = lbs_set_host_sleep(priv, 1);
156 } else {
157 netdev_err(priv->dev, "invalid option\n");
158 ret = -EINVAL;
159 }
160
161 if (!ret)
162 ret = count;
163
164 out_unlock:
165 free_page(addr);
166 return ret;
167 }
168
lbs_host_sleep_read(struct file * file,char __user * userbuf,size_t count,loff_t * ppos)169 static ssize_t lbs_host_sleep_read(struct file *file, char __user *userbuf,
170 size_t count, loff_t *ppos)
171 {
172 struct lbs_private *priv = file->private_data;
173 ssize_t ret;
174 size_t pos = 0;
175 unsigned long addr = get_zeroed_page(GFP_KERNEL);
176 char *buf = (char *)addr;
177 if (!buf)
178 return -ENOMEM;
179
180 pos += snprintf(buf, len, "%d\n", priv->is_host_sleep_activated);
181
182 ret = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
183
184 free_page(addr);
185 return ret;
186 }
187
188 /*
189 * When calling CMD_802_11_SUBSCRIBE_EVENT with CMD_ACT_GET, me might
190 * get a bunch of vendor-specific TLVs (a.k.a. IEs) back from the
191 * firmware. Here's an example:
192 * 04 01 02 00 00 00 05 01 02 00 00 00 06 01 02 00
193 * 00 00 07 01 02 00 3c 00 00 00 00 00 00 00 03 03
194 * 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
195 *
196 * The 04 01 is the TLV type (here TLV_TYPE_RSSI_LOW), 02 00 is the length,
197 * 00 00 are the data bytes of this TLV. For this TLV, their meaning is
198 * defined in mrvlietypes_thresholds
199 *
200 * This function searches in this TLV data chunk for a given TLV type
201 * and returns a pointer to the first data byte of the TLV, or to NULL
202 * if the TLV hasn't been found.
203 */
lbs_tlv_find(uint16_t tlv_type,const uint8_t * tlv,uint16_t size)204 static void *lbs_tlv_find(uint16_t tlv_type, const uint8_t *tlv, uint16_t size)
205 {
206 struct mrvl_ie_header *tlv_h;
207 uint16_t length;
208 ssize_t pos = 0;
209
210 while (pos < size) {
211 tlv_h = (struct mrvl_ie_header *) tlv;
212 if (!tlv_h->len)
213 return NULL;
214 if (tlv_h->type == cpu_to_le16(tlv_type))
215 return tlv_h;
216 length = le16_to_cpu(tlv_h->len) + sizeof(*tlv_h);
217 pos += length;
218 tlv += length;
219 }
220 return NULL;
221 }
222
223
lbs_threshold_read(uint16_t tlv_type,uint16_t event_mask,struct file * file,char __user * userbuf,size_t count,loff_t * ppos)224 static ssize_t lbs_threshold_read(uint16_t tlv_type, uint16_t event_mask,
225 struct file *file, char __user *userbuf,
226 size_t count, loff_t *ppos)
227 {
228 struct cmd_ds_802_11_subscribe_event *subscribed;
229 struct mrvl_ie_thresholds *got;
230 struct lbs_private *priv = file->private_data;
231 ssize_t ret = 0;
232 size_t pos = 0;
233 char *buf;
234 u8 value;
235 u8 freq;
236 int events = 0;
237
238 buf = (char *)get_zeroed_page(GFP_KERNEL);
239 if (!buf)
240 return -ENOMEM;
241
242 subscribed = kzalloc(sizeof(*subscribed), GFP_KERNEL);
243 if (!subscribed) {
244 ret = -ENOMEM;
245 goto out_page;
246 }
247
248 subscribed->hdr.size = cpu_to_le16(sizeof(*subscribed));
249 subscribed->action = cpu_to_le16(CMD_ACT_GET);
250
251 ret = lbs_cmd_with_response(priv, CMD_802_11_SUBSCRIBE_EVENT, subscribed);
252 if (ret)
253 goto out_cmd;
254
255 got = lbs_tlv_find(tlv_type, subscribed->tlv, sizeof(subscribed->tlv));
256 if (got) {
257 value = got->value;
258 freq = got->freq;
259 events = le16_to_cpu(subscribed->events);
260
261 pos += snprintf(buf, len, "%d %d %d\n", value, freq,
262 !!(events & event_mask));
263 }
264
265 ret = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
266
267 out_cmd:
268 kfree(subscribed);
269
270 out_page:
271 free_page((unsigned long)buf);
272 return ret;
273 }
274
275
lbs_threshold_write(uint16_t tlv_type,uint16_t event_mask,struct file * file,const char __user * userbuf,size_t count,loff_t * ppos)276 static ssize_t lbs_threshold_write(uint16_t tlv_type, uint16_t event_mask,
277 struct file *file,
278 const char __user *userbuf, size_t count,
279 loff_t *ppos)
280 {
281 struct cmd_ds_802_11_subscribe_event *events;
282 struct mrvl_ie_thresholds *tlv;
283 struct lbs_private *priv = file->private_data;
284 ssize_t buf_size;
285 int value, freq, new_mask;
286 uint16_t curr_mask;
287 char *buf;
288 int ret;
289
290 buf = (char *)get_zeroed_page(GFP_KERNEL);
291 if (!buf)
292 return -ENOMEM;
293
294 buf_size = min(count, len - 1);
295 if (copy_from_user(buf, userbuf, buf_size)) {
296 ret = -EFAULT;
297 goto out_page;
298 }
299 ret = sscanf(buf, "%d %d %d", &value, &freq, &new_mask);
300 if (ret != 3) {
301 ret = -EINVAL;
302 goto out_page;
303 }
304 events = kzalloc(sizeof(*events), GFP_KERNEL);
305 if (!events) {
306 ret = -ENOMEM;
307 goto out_page;
308 }
309
310 events->hdr.size = cpu_to_le16(sizeof(*events));
311 events->action = cpu_to_le16(CMD_ACT_GET);
312
313 ret = lbs_cmd_with_response(priv, CMD_802_11_SUBSCRIBE_EVENT, events);
314 if (ret)
315 goto out_events;
316
317 curr_mask = le16_to_cpu(events->events);
318
319 if (new_mask)
320 new_mask = curr_mask | event_mask;
321 else
322 new_mask = curr_mask & ~event_mask;
323
324 /* Now everything is set and we can send stuff down to the firmware */
325
326 tlv = (void *)events->tlv;
327
328 events->action = cpu_to_le16(CMD_ACT_SET);
329 events->events = cpu_to_le16(new_mask);
330 tlv->header.type = cpu_to_le16(tlv_type);
331 tlv->header.len = cpu_to_le16(sizeof(*tlv) - sizeof(tlv->header));
332 tlv->value = value;
333 if (tlv_type != TLV_TYPE_BCNMISS)
334 tlv->freq = freq;
335
336 /* The command header, the action, the event mask, and one TLV */
337 events->hdr.size = cpu_to_le16(sizeof(events->hdr) + 4 + sizeof(*tlv));
338
339 ret = lbs_cmd_with_response(priv, CMD_802_11_SUBSCRIBE_EVENT, events);
340
341 if (!ret)
342 ret = count;
343 out_events:
344 kfree(events);
345 out_page:
346 free_page((unsigned long)buf);
347 return ret;
348 }
349
350
lbs_lowrssi_read(struct file * file,char __user * userbuf,size_t count,loff_t * ppos)351 static ssize_t lbs_lowrssi_read(struct file *file, char __user *userbuf,
352 size_t count, loff_t *ppos)
353 {
354 return lbs_threshold_read(TLV_TYPE_RSSI_LOW, CMD_SUBSCRIBE_RSSI_LOW,
355 file, userbuf, count, ppos);
356 }
357
358
lbs_lowrssi_write(struct file * file,const char __user * userbuf,size_t count,loff_t * ppos)359 static ssize_t lbs_lowrssi_write(struct file *file, const char __user *userbuf,
360 size_t count, loff_t *ppos)
361 {
362 return lbs_threshold_write(TLV_TYPE_RSSI_LOW, CMD_SUBSCRIBE_RSSI_LOW,
363 file, userbuf, count, ppos);
364 }
365
366
lbs_lowsnr_read(struct file * file,char __user * userbuf,size_t count,loff_t * ppos)367 static ssize_t lbs_lowsnr_read(struct file *file, char __user *userbuf,
368 size_t count, loff_t *ppos)
369 {
370 return lbs_threshold_read(TLV_TYPE_SNR_LOW, CMD_SUBSCRIBE_SNR_LOW,
371 file, userbuf, count, ppos);
372 }
373
374
lbs_lowsnr_write(struct file * file,const char __user * userbuf,size_t count,loff_t * ppos)375 static ssize_t lbs_lowsnr_write(struct file *file, const char __user *userbuf,
376 size_t count, loff_t *ppos)
377 {
378 return lbs_threshold_write(TLV_TYPE_SNR_LOW, CMD_SUBSCRIBE_SNR_LOW,
379 file, userbuf, count, ppos);
380 }
381
382
lbs_failcount_read(struct file * file,char __user * userbuf,size_t count,loff_t * ppos)383 static ssize_t lbs_failcount_read(struct file *file, char __user *userbuf,
384 size_t count, loff_t *ppos)
385 {
386 return lbs_threshold_read(TLV_TYPE_FAILCOUNT, CMD_SUBSCRIBE_FAILCOUNT,
387 file, userbuf, count, ppos);
388 }
389
390
lbs_failcount_write(struct file * file,const char __user * userbuf,size_t count,loff_t * ppos)391 static ssize_t lbs_failcount_write(struct file *file, const char __user *userbuf,
392 size_t count, loff_t *ppos)
393 {
394 return lbs_threshold_write(TLV_TYPE_FAILCOUNT, CMD_SUBSCRIBE_FAILCOUNT,
395 file, userbuf, count, ppos);
396 }
397
398
lbs_highrssi_read(struct file * file,char __user * userbuf,size_t count,loff_t * ppos)399 static ssize_t lbs_highrssi_read(struct file *file, char __user *userbuf,
400 size_t count, loff_t *ppos)
401 {
402 return lbs_threshold_read(TLV_TYPE_RSSI_HIGH, CMD_SUBSCRIBE_RSSI_HIGH,
403 file, userbuf, count, ppos);
404 }
405
406
lbs_highrssi_write(struct file * file,const char __user * userbuf,size_t count,loff_t * ppos)407 static ssize_t lbs_highrssi_write(struct file *file, const char __user *userbuf,
408 size_t count, loff_t *ppos)
409 {
410 return lbs_threshold_write(TLV_TYPE_RSSI_HIGH, CMD_SUBSCRIBE_RSSI_HIGH,
411 file, userbuf, count, ppos);
412 }
413
414
lbs_highsnr_read(struct file * file,char __user * userbuf,size_t count,loff_t * ppos)415 static ssize_t lbs_highsnr_read(struct file *file, char __user *userbuf,
416 size_t count, loff_t *ppos)
417 {
418 return lbs_threshold_read(TLV_TYPE_SNR_HIGH, CMD_SUBSCRIBE_SNR_HIGH,
419 file, userbuf, count, ppos);
420 }
421
422
lbs_highsnr_write(struct file * file,const char __user * userbuf,size_t count,loff_t * ppos)423 static ssize_t lbs_highsnr_write(struct file *file, const char __user *userbuf,
424 size_t count, loff_t *ppos)
425 {
426 return lbs_threshold_write(TLV_TYPE_SNR_HIGH, CMD_SUBSCRIBE_SNR_HIGH,
427 file, userbuf, count, ppos);
428 }
429
lbs_bcnmiss_read(struct file * file,char __user * userbuf,size_t count,loff_t * ppos)430 static ssize_t lbs_bcnmiss_read(struct file *file, char __user *userbuf,
431 size_t count, loff_t *ppos)
432 {
433 return lbs_threshold_read(TLV_TYPE_BCNMISS, CMD_SUBSCRIBE_BCNMISS,
434 file, userbuf, count, ppos);
435 }
436
437
lbs_bcnmiss_write(struct file * file,const char __user * userbuf,size_t count,loff_t * ppos)438 static ssize_t lbs_bcnmiss_write(struct file *file, const char __user *userbuf,
439 size_t count, loff_t *ppos)
440 {
441 return lbs_threshold_write(TLV_TYPE_BCNMISS, CMD_SUBSCRIBE_BCNMISS,
442 file, userbuf, count, ppos);
443 }
444
445
lbs_rdmac_read(struct file * file,char __user * userbuf,size_t count,loff_t * ppos)446 static ssize_t lbs_rdmac_read(struct file *file, char __user *userbuf,
447 size_t count, loff_t *ppos)
448 {
449 struct lbs_private *priv = file->private_data;
450 ssize_t pos = 0;
451 int ret;
452 unsigned long addr = get_zeroed_page(GFP_KERNEL);
453 char *buf = (char *)addr;
454 u32 val = 0;
455
456 if (!buf)
457 return -ENOMEM;
458
459 ret = lbs_get_reg(priv, CMD_MAC_REG_ACCESS, priv->mac_offset, &val);
460 mdelay(10);
461 if (!ret) {
462 pos = snprintf(buf, len, "MAC[0x%x] = 0x%08x\n",
463 priv->mac_offset, val);
464 ret = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
465 }
466 free_page(addr);
467 return ret;
468 }
469
lbs_rdmac_write(struct file * file,const char __user * userbuf,size_t count,loff_t * ppos)470 static ssize_t lbs_rdmac_write(struct file *file,
471 const char __user *userbuf,
472 size_t count, loff_t *ppos)
473 {
474 struct lbs_private *priv = file->private_data;
475 ssize_t res, buf_size;
476 unsigned long addr = get_zeroed_page(GFP_KERNEL);
477 char *buf = (char *)addr;
478 if (!buf)
479 return -ENOMEM;
480
481 buf_size = min(count, len - 1);
482 if (copy_from_user(buf, userbuf, buf_size)) {
483 res = -EFAULT;
484 goto out_unlock;
485 }
486 priv->mac_offset = simple_strtoul(buf, NULL, 16);
487 res = count;
488 out_unlock:
489 free_page(addr);
490 return res;
491 }
492
lbs_wrmac_write(struct file * file,const char __user * userbuf,size_t count,loff_t * ppos)493 static ssize_t lbs_wrmac_write(struct file *file,
494 const char __user *userbuf,
495 size_t count, loff_t *ppos)
496 {
497
498 struct lbs_private *priv = file->private_data;
499 ssize_t res, buf_size;
500 u32 offset, value;
501 unsigned long addr = get_zeroed_page(GFP_KERNEL);
502 char *buf = (char *)addr;
503 if (!buf)
504 return -ENOMEM;
505
506 buf_size = min(count, len - 1);
507 if (copy_from_user(buf, userbuf, buf_size)) {
508 res = -EFAULT;
509 goto out_unlock;
510 }
511 res = sscanf(buf, "%x %x", &offset, &value);
512 if (res != 2) {
513 res = -EFAULT;
514 goto out_unlock;
515 }
516
517 res = lbs_set_reg(priv, CMD_MAC_REG_ACCESS, offset, value);
518 mdelay(10);
519
520 if (!res)
521 res = count;
522 out_unlock:
523 free_page(addr);
524 return res;
525 }
526
lbs_rdbbp_read(struct file * file,char __user * userbuf,size_t count,loff_t * ppos)527 static ssize_t lbs_rdbbp_read(struct file *file, char __user *userbuf,
528 size_t count, loff_t *ppos)
529 {
530 struct lbs_private *priv = file->private_data;
531 ssize_t pos = 0;
532 int ret;
533 unsigned long addr = get_zeroed_page(GFP_KERNEL);
534 char *buf = (char *)addr;
535 u32 val;
536
537 if (!buf)
538 return -ENOMEM;
539
540 ret = lbs_get_reg(priv, CMD_BBP_REG_ACCESS, priv->bbp_offset, &val);
541 mdelay(10);
542 if (!ret) {
543 pos = snprintf(buf, len, "BBP[0x%x] = 0x%08x\n",
544 priv->bbp_offset, val);
545 ret = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
546 }
547 free_page(addr);
548
549 return ret;
550 }
551
lbs_rdbbp_write(struct file * file,const char __user * userbuf,size_t count,loff_t * ppos)552 static ssize_t lbs_rdbbp_write(struct file *file,
553 const char __user *userbuf,
554 size_t count, loff_t *ppos)
555 {
556 struct lbs_private *priv = file->private_data;
557 ssize_t res, buf_size;
558 unsigned long addr = get_zeroed_page(GFP_KERNEL);
559 char *buf = (char *)addr;
560 if (!buf)
561 return -ENOMEM;
562
563 buf_size = min(count, len - 1);
564 if (copy_from_user(buf, userbuf, buf_size)) {
565 res = -EFAULT;
566 goto out_unlock;
567 }
568 priv->bbp_offset = simple_strtoul(buf, NULL, 16);
569 res = count;
570 out_unlock:
571 free_page(addr);
572 return res;
573 }
574
lbs_wrbbp_write(struct file * file,const char __user * userbuf,size_t count,loff_t * ppos)575 static ssize_t lbs_wrbbp_write(struct file *file,
576 const char __user *userbuf,
577 size_t count, loff_t *ppos)
578 {
579
580 struct lbs_private *priv = file->private_data;
581 ssize_t res, buf_size;
582 u32 offset, value;
583 unsigned long addr = get_zeroed_page(GFP_KERNEL);
584 char *buf = (char *)addr;
585 if (!buf)
586 return -ENOMEM;
587
588 buf_size = min(count, len - 1);
589 if (copy_from_user(buf, userbuf, buf_size)) {
590 res = -EFAULT;
591 goto out_unlock;
592 }
593 res = sscanf(buf, "%x %x", &offset, &value);
594 if (res != 2) {
595 res = -EFAULT;
596 goto out_unlock;
597 }
598
599 res = lbs_set_reg(priv, CMD_BBP_REG_ACCESS, offset, value);
600 mdelay(10);
601
602 if (!res)
603 res = count;
604 out_unlock:
605 free_page(addr);
606 return res;
607 }
608
lbs_rdrf_read(struct file * file,char __user * userbuf,size_t count,loff_t * ppos)609 static ssize_t lbs_rdrf_read(struct file *file, char __user *userbuf,
610 size_t count, loff_t *ppos)
611 {
612 struct lbs_private *priv = file->private_data;
613 ssize_t pos = 0;
614 int ret;
615 unsigned long addr = get_zeroed_page(GFP_KERNEL);
616 char *buf = (char *)addr;
617 u32 val;
618
619 if (!buf)
620 return -ENOMEM;
621
622 ret = lbs_get_reg(priv, CMD_RF_REG_ACCESS, priv->rf_offset, &val);
623 mdelay(10);
624 if (!ret) {
625 pos = snprintf(buf, len, "RF[0x%x] = 0x%08x\n",
626 priv->rf_offset, val);
627 ret = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
628 }
629 free_page(addr);
630
631 return ret;
632 }
633
lbs_rdrf_write(struct file * file,const char __user * userbuf,size_t count,loff_t * ppos)634 static ssize_t lbs_rdrf_write(struct file *file,
635 const char __user *userbuf,
636 size_t count, loff_t *ppos)
637 {
638 struct lbs_private *priv = file->private_data;
639 ssize_t res, buf_size;
640 unsigned long addr = get_zeroed_page(GFP_KERNEL);
641 char *buf = (char *)addr;
642 if (!buf)
643 return -ENOMEM;
644
645 buf_size = min(count, len - 1);
646 if (copy_from_user(buf, userbuf, buf_size)) {
647 res = -EFAULT;
648 goto out_unlock;
649 }
650 priv->rf_offset = simple_strtoul(buf, NULL, 16);
651 res = count;
652 out_unlock:
653 free_page(addr);
654 return res;
655 }
656
lbs_wrrf_write(struct file * file,const char __user * userbuf,size_t count,loff_t * ppos)657 static ssize_t lbs_wrrf_write(struct file *file,
658 const char __user *userbuf,
659 size_t count, loff_t *ppos)
660 {
661
662 struct lbs_private *priv = file->private_data;
663 ssize_t res, buf_size;
664 u32 offset, value;
665 unsigned long addr = get_zeroed_page(GFP_KERNEL);
666 char *buf = (char *)addr;
667 if (!buf)
668 return -ENOMEM;
669
670 buf_size = min(count, len - 1);
671 if (copy_from_user(buf, userbuf, buf_size)) {
672 res = -EFAULT;
673 goto out_unlock;
674 }
675 res = sscanf(buf, "%x %x", &offset, &value);
676 if (res != 2) {
677 res = -EFAULT;
678 goto out_unlock;
679 }
680
681 res = lbs_set_reg(priv, CMD_RF_REG_ACCESS, offset, value);
682 mdelay(10);
683
684 if (!res)
685 res = count;
686 out_unlock:
687 free_page(addr);
688 return res;
689 }
690
691 #define FOPS(fread, fwrite) { \
692 .owner = THIS_MODULE, \
693 .open = simple_open, \
694 .read = (fread), \
695 .write = (fwrite), \
696 .llseek = generic_file_llseek, \
697 }
698
699 struct lbs_debugfs_files {
700 const char *name;
701 umode_t perm;
702 struct file_operations fops;
703 };
704
705 static const struct lbs_debugfs_files debugfs_files[] = {
706 { "info", 0444, FOPS(lbs_dev_info, write_file_dummy), },
707 { "sleepparams", 0644, FOPS(lbs_sleepparams_read,
708 lbs_sleepparams_write), },
709 { "hostsleep", 0644, FOPS(lbs_host_sleep_read,
710 lbs_host_sleep_write), },
711 };
712
713 static const struct lbs_debugfs_files debugfs_events_files[] = {
714 {"low_rssi", 0644, FOPS(lbs_lowrssi_read,
715 lbs_lowrssi_write), },
716 {"low_snr", 0644, FOPS(lbs_lowsnr_read,
717 lbs_lowsnr_write), },
718 {"failure_count", 0644, FOPS(lbs_failcount_read,
719 lbs_failcount_write), },
720 {"beacon_missed", 0644, FOPS(lbs_bcnmiss_read,
721 lbs_bcnmiss_write), },
722 {"high_rssi", 0644, FOPS(lbs_highrssi_read,
723 lbs_highrssi_write), },
724 {"high_snr", 0644, FOPS(lbs_highsnr_read,
725 lbs_highsnr_write), },
726 };
727
728 static const struct lbs_debugfs_files debugfs_regs_files[] = {
729 {"rdmac", 0644, FOPS(lbs_rdmac_read, lbs_rdmac_write), },
730 {"wrmac", 0600, FOPS(NULL, lbs_wrmac_write), },
731 {"rdbbp", 0644, FOPS(lbs_rdbbp_read, lbs_rdbbp_write), },
732 {"wrbbp", 0600, FOPS(NULL, lbs_wrbbp_write), },
733 {"rdrf", 0644, FOPS(lbs_rdrf_read, lbs_rdrf_write), },
734 {"wrrf", 0600, FOPS(NULL, lbs_wrrf_write), },
735 };
736
lbs_debugfs_init(void)737 void lbs_debugfs_init(void)
738 {
739 if (!lbs_dir)
740 lbs_dir = debugfs_create_dir("lbs_wireless", NULL);
741 }
742
lbs_debugfs_remove(void)743 void lbs_debugfs_remove(void)
744 {
745 if (lbs_dir)
746 debugfs_remove(lbs_dir);
747 }
748
lbs_debugfs_init_one(struct lbs_private * priv,struct net_device * dev)749 void lbs_debugfs_init_one(struct lbs_private *priv, struct net_device *dev)
750 {
751 int i;
752 const struct lbs_debugfs_files *files;
753 if (!lbs_dir)
754 goto exit;
755
756 priv->debugfs_dir = debugfs_create_dir(dev->name, lbs_dir);
757 if (!priv->debugfs_dir)
758 goto exit;
759
760 for (i=0; i<ARRAY_SIZE(debugfs_files); i++) {
761 files = &debugfs_files[i];
762 priv->debugfs_files[i] = debugfs_create_file(files->name,
763 files->perm,
764 priv->debugfs_dir,
765 priv,
766 &files->fops);
767 }
768
769 priv->events_dir = debugfs_create_dir("subscribed_events", priv->debugfs_dir);
770 if (!priv->events_dir)
771 goto exit;
772
773 for (i=0; i<ARRAY_SIZE(debugfs_events_files); i++) {
774 files = &debugfs_events_files[i];
775 priv->debugfs_events_files[i] = debugfs_create_file(files->name,
776 files->perm,
777 priv->events_dir,
778 priv,
779 &files->fops);
780 }
781
782 priv->regs_dir = debugfs_create_dir("registers", priv->debugfs_dir);
783 if (!priv->regs_dir)
784 goto exit;
785
786 for (i=0; i<ARRAY_SIZE(debugfs_regs_files); i++) {
787 files = &debugfs_regs_files[i];
788 priv->debugfs_regs_files[i] = debugfs_create_file(files->name,
789 files->perm,
790 priv->regs_dir,
791 priv,
792 &files->fops);
793 }
794
795 #ifdef PROC_DEBUG
796 lbs_debug_init(priv);
797 #endif
798 exit:
799 return;
800 }
801
lbs_debugfs_remove_one(struct lbs_private * priv)802 void lbs_debugfs_remove_one(struct lbs_private *priv)
803 {
804 int i;
805
806 for(i=0; i<ARRAY_SIZE(debugfs_regs_files); i++)
807 debugfs_remove(priv->debugfs_regs_files[i]);
808
809 debugfs_remove(priv->regs_dir);
810
811 for(i=0; i<ARRAY_SIZE(debugfs_events_files); i++)
812 debugfs_remove(priv->debugfs_events_files[i]);
813
814 debugfs_remove(priv->events_dir);
815 #ifdef PROC_DEBUG
816 debugfs_remove(priv->debugfs_debug);
817 #endif
818 for(i=0; i<ARRAY_SIZE(debugfs_files); i++)
819 debugfs_remove(priv->debugfs_files[i]);
820 debugfs_remove(priv->debugfs_dir);
821 }
822
823
824
825 /* debug entry */
826
827 #ifdef PROC_DEBUG
828
829 #define item_size(n) (FIELD_SIZEOF(struct lbs_private, n))
830 #define item_addr(n) (offsetof(struct lbs_private, n))
831
832
833 struct debug_data {
834 char name[32];
835 u32 size;
836 size_t addr;
837 };
838
839 /* To debug any member of struct lbs_private, simply add one line here.
840 */
841 static struct debug_data items[] = {
842 {"psmode", item_size(psmode), item_addr(psmode)},
843 {"psstate", item_size(psstate), item_addr(psstate)},
844 };
845
846 static int num_of_items = ARRAY_SIZE(items);
847
848 /**
849 * lbs_debugfs_read - proc read function
850 *
851 * @file: file to read
852 * @userbuf: pointer to buffer
853 * @count: number of bytes to read
854 * @ppos: read data starting position
855 *
856 * returns: amount of data read or negative error code
857 */
lbs_debugfs_read(struct file * file,char __user * userbuf,size_t count,loff_t * ppos)858 static ssize_t lbs_debugfs_read(struct file *file, char __user *userbuf,
859 size_t count, loff_t *ppos)
860 {
861 int val = 0;
862 size_t pos = 0;
863 ssize_t res;
864 char *p;
865 int i;
866 struct debug_data *d;
867 unsigned long addr = get_zeroed_page(GFP_KERNEL);
868 char *buf = (char *)addr;
869 if (!buf)
870 return -ENOMEM;
871
872 p = buf;
873
874 d = file->private_data;
875
876 for (i = 0; i < num_of_items; i++) {
877 if (d[i].size == 1)
878 val = *((u8 *) d[i].addr);
879 else if (d[i].size == 2)
880 val = *((u16 *) d[i].addr);
881 else if (d[i].size == 4)
882 val = *((u32 *) d[i].addr);
883 else if (d[i].size == 8)
884 val = *((u64 *) d[i].addr);
885
886 pos += sprintf(p + pos, "%s=%d\n", d[i].name, val);
887 }
888
889 res = simple_read_from_buffer(userbuf, count, ppos, p, pos);
890
891 free_page(addr);
892 return res;
893 }
894
895 /**
896 * lbs_debugfs_write - proc write function
897 *
898 * @f: file pointer
899 * @buf: pointer to data buffer
900 * @cnt: data number to write
901 * @ppos: file position
902 *
903 * returns: amount of data written
904 */
lbs_debugfs_write(struct file * f,const char __user * buf,size_t cnt,loff_t * ppos)905 static ssize_t lbs_debugfs_write(struct file *f, const char __user *buf,
906 size_t cnt, loff_t *ppos)
907 {
908 int r, i;
909 char *pdata;
910 char *p;
911 char *p0;
912 char *p1;
913 char *p2;
914 struct debug_data *d = f->private_data;
915
916 pdata = kmalloc(cnt, GFP_KERNEL);
917 if (pdata == NULL)
918 return 0;
919
920 if (copy_from_user(pdata, buf, cnt)) {
921 lbs_deb_debugfs("Copy from user failed\n");
922 kfree(pdata);
923 return 0;
924 }
925
926 p0 = pdata;
927 for (i = 0; i < num_of_items; i++) {
928 do {
929 p = strstr(p0, d[i].name);
930 if (p == NULL)
931 break;
932 p1 = strchr(p, '\n');
933 if (p1 == NULL)
934 break;
935 p0 = p1++;
936 p2 = strchr(p, '=');
937 if (!p2)
938 break;
939 p2++;
940 r = simple_strtoul(p2, NULL, 0);
941 if (d[i].size == 1)
942 *((u8 *) d[i].addr) = (u8) r;
943 else if (d[i].size == 2)
944 *((u16 *) d[i].addr) = (u16) r;
945 else if (d[i].size == 4)
946 *((u32 *) d[i].addr) = (u32) r;
947 else if (d[i].size == 8)
948 *((u64 *) d[i].addr) = (u64) r;
949 break;
950 } while (1);
951 }
952 kfree(pdata);
953
954 return (ssize_t)cnt;
955 }
956
957 static const struct file_operations lbs_debug_fops = {
958 .owner = THIS_MODULE,
959 .open = simple_open,
960 .write = lbs_debugfs_write,
961 .read = lbs_debugfs_read,
962 .llseek = default_llseek,
963 };
964
965 /**
966 * lbs_debug_init - create debug proc file
967 *
968 * @priv: pointer to &struct lbs_private
969 *
970 * returns: N/A
971 */
lbs_debug_init(struct lbs_private * priv)972 static void lbs_debug_init(struct lbs_private *priv)
973 {
974 int i;
975
976 if (!priv->debugfs_dir)
977 return;
978
979 for (i = 0; i < num_of_items; i++)
980 items[i].addr += (size_t) priv;
981
982 priv->debugfs_debug = debugfs_create_file("debug", 0644,
983 priv->debugfs_dir, &items[0],
984 &lbs_debug_fops);
985 }
986 #endif
987