1 // SPDX-License-Identifier: GPL-2.0
2 #include <linux/dcache.h>
3 #include <linux/debugfs.h>
4 #include <linux/delay.h>
5 #include <linux/hardirq.h>
6 #include <linux/mm.h>
7 #include <linux/string.h>
8 #include <linux/slab.h>
9 #include <linux/export.h>
10
11 #include "decl.h"
12 #include "cmd.h"
13 #include "debugfs.h"
14
15 static struct dentry *lbs_dir;
16 static char *szStates[] = {
17 "Connected",
18 "Disconnected"
19 };
20
21 #ifdef PROC_DEBUG
22 static void lbs_debug_init(struct lbs_private *priv);
23 #endif
24
write_file_dummy(struct file * file,const char __user * buf,size_t count,loff_t * ppos)25 static ssize_t write_file_dummy(struct file *file, const char __user *buf,
26 size_t count, loff_t *ppos)
27 {
28 return -EINVAL;
29 }
30
31 static const size_t len = PAGE_SIZE;
32
lbs_dev_info(struct file * file,char __user * userbuf,size_t count,loff_t * ppos)33 static ssize_t lbs_dev_info(struct file *file, char __user *userbuf,
34 size_t count, loff_t *ppos)
35 {
36 struct lbs_private *priv = file->private_data;
37 size_t pos = 0;
38 unsigned long addr = get_zeroed_page(GFP_KERNEL);
39 char *buf = (char *)addr;
40 ssize_t res;
41 if (!buf)
42 return -ENOMEM;
43
44 pos += snprintf(buf+pos, len-pos, "state = %s\n",
45 szStates[priv->connect_status]);
46 pos += snprintf(buf+pos, len-pos, "region_code = %02x\n",
47 (u32) priv->regioncode);
48
49 res = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
50
51 free_page(addr);
52 return res;
53 }
54
lbs_sleepparams_write(struct file * file,const char __user * user_buf,size_t count,loff_t * ppos)55 static ssize_t lbs_sleepparams_write(struct file *file,
56 const char __user *user_buf, size_t count,
57 loff_t *ppos)
58 {
59 struct lbs_private *priv = file->private_data;
60 ssize_t ret;
61 struct sleep_params sp;
62 int p1, p2, p3, p4, p5, p6;
63 char *buf;
64
65 buf = memdup_user_nul(user_buf, min(count, len - 1));
66 if (IS_ERR(buf))
67 return PTR_ERR(buf);
68
69 ret = sscanf(buf, "%d %d %d %d %d %d", &p1, &p2, &p3, &p4, &p5, &p6);
70 if (ret != 6) {
71 ret = -EINVAL;
72 goto out_unlock;
73 }
74 sp.sp_error = p1;
75 sp.sp_offset = p2;
76 sp.sp_stabletime = p3;
77 sp.sp_calcontrol = p4;
78 sp.sp_extsleepclk = p5;
79 sp.sp_reserved = p6;
80
81 ret = lbs_cmd_802_11_sleep_params(priv, CMD_ACT_SET, &sp);
82 if (!ret)
83 ret = count;
84 else if (ret > 0)
85 ret = -EINVAL;
86
87 out_unlock:
88 kfree(buf);
89 return ret;
90 }
91
lbs_sleepparams_read(struct file * file,char __user * userbuf,size_t count,loff_t * ppos)92 static ssize_t lbs_sleepparams_read(struct file *file, char __user *userbuf,
93 size_t count, loff_t *ppos)
94 {
95 struct lbs_private *priv = file->private_data;
96 ssize_t ret;
97 size_t pos = 0;
98 struct sleep_params sp;
99 unsigned long addr = get_zeroed_page(GFP_KERNEL);
100 char *buf = (char *)addr;
101 if (!buf)
102 return -ENOMEM;
103
104 ret = lbs_cmd_802_11_sleep_params(priv, CMD_ACT_GET, &sp);
105 if (ret)
106 goto out_unlock;
107
108 pos += snprintf(buf, len, "%d %d %d %d %d %d\n", sp.sp_error,
109 sp.sp_offset, sp.sp_stabletime,
110 sp.sp_calcontrol, sp.sp_extsleepclk,
111 sp.sp_reserved);
112
113 ret = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
114
115 out_unlock:
116 free_page(addr);
117 return ret;
118 }
119
lbs_host_sleep_write(struct file * file,const char __user * user_buf,size_t count,loff_t * ppos)120 static ssize_t lbs_host_sleep_write(struct file *file,
121 const char __user *user_buf, size_t count,
122 loff_t *ppos)
123 {
124 struct lbs_private *priv = file->private_data;
125 ssize_t ret;
126 int host_sleep;
127 char *buf;
128
129 buf = memdup_user_nul(user_buf, min(count, len - 1));
130 if (IS_ERR(buf))
131 return PTR_ERR(buf);
132
133 ret = sscanf(buf, "%d", &host_sleep);
134 if (ret != 1) {
135 ret = -EINVAL;
136 goto out_unlock;
137 }
138
139 if (host_sleep == 0)
140 ret = lbs_set_host_sleep(priv, 0);
141 else if (host_sleep == 1) {
142 if (priv->wol_criteria == EHS_REMOVE_WAKEUP) {
143 netdev_info(priv->dev,
144 "wake parameters not configured\n");
145 ret = -EINVAL;
146 goto out_unlock;
147 }
148 ret = lbs_set_host_sleep(priv, 1);
149 } else {
150 netdev_err(priv->dev, "invalid option\n");
151 ret = -EINVAL;
152 }
153
154 if (!ret)
155 ret = count;
156
157 out_unlock:
158 kfree(buf);
159 return ret;
160 }
161
lbs_host_sleep_read(struct file * file,char __user * userbuf,size_t count,loff_t * ppos)162 static ssize_t lbs_host_sleep_read(struct file *file, char __user *userbuf,
163 size_t count, loff_t *ppos)
164 {
165 struct lbs_private *priv = file->private_data;
166 ssize_t ret;
167 size_t pos = 0;
168 unsigned long addr = get_zeroed_page(GFP_KERNEL);
169 char *buf = (char *)addr;
170 if (!buf)
171 return -ENOMEM;
172
173 pos += snprintf(buf, len, "%d\n", priv->is_host_sleep_activated);
174
175 ret = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
176
177 free_page(addr);
178 return ret;
179 }
180
181 /*
182 * When calling CMD_802_11_SUBSCRIBE_EVENT with CMD_ACT_GET, me might
183 * get a bunch of vendor-specific TLVs (a.k.a. IEs) back from the
184 * firmware. Here's an example:
185 * 04 01 02 00 00 00 05 01 02 00 00 00 06 01 02 00
186 * 00 00 07 01 02 00 3c 00 00 00 00 00 00 00 03 03
187 * 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
188 *
189 * The 04 01 is the TLV type (here TLV_TYPE_RSSI_LOW), 02 00 is the length,
190 * 00 00 are the data bytes of this TLV. For this TLV, their meaning is
191 * defined in mrvlietypes_thresholds
192 *
193 * This function searches in this TLV data chunk for a given TLV type
194 * and returns a pointer to the first data byte of the TLV, or to NULL
195 * if the TLV hasn't been found.
196 */
lbs_tlv_find(uint16_t tlv_type,const uint8_t * tlv,uint16_t size)197 static void *lbs_tlv_find(uint16_t tlv_type, const uint8_t *tlv, uint16_t size)
198 {
199 struct mrvl_ie_header *tlv_h;
200 uint16_t length;
201 ssize_t pos = 0;
202
203 while (pos < size) {
204 tlv_h = (struct mrvl_ie_header *) tlv;
205 if (!tlv_h->len)
206 return NULL;
207 if (tlv_h->type == cpu_to_le16(tlv_type))
208 return tlv_h;
209 length = le16_to_cpu(tlv_h->len) + sizeof(*tlv_h);
210 pos += length;
211 tlv += length;
212 }
213 return NULL;
214 }
215
216
lbs_threshold_read(uint16_t tlv_type,uint16_t event_mask,struct file * file,char __user * userbuf,size_t count,loff_t * ppos)217 static ssize_t lbs_threshold_read(uint16_t tlv_type, uint16_t event_mask,
218 struct file *file, char __user *userbuf,
219 size_t count, loff_t *ppos)
220 {
221 struct cmd_ds_802_11_subscribe_event *subscribed;
222 struct mrvl_ie_thresholds *got;
223 struct lbs_private *priv = file->private_data;
224 ssize_t ret = 0;
225 size_t pos = 0;
226 char *buf;
227 u8 value;
228 u8 freq;
229 int events = 0;
230
231 buf = (char *)get_zeroed_page(GFP_KERNEL);
232 if (!buf)
233 return -ENOMEM;
234
235 subscribed = kzalloc(sizeof(*subscribed), GFP_KERNEL);
236 if (!subscribed) {
237 ret = -ENOMEM;
238 goto out_page;
239 }
240
241 subscribed->hdr.size = cpu_to_le16(sizeof(*subscribed));
242 subscribed->action = cpu_to_le16(CMD_ACT_GET);
243
244 ret = lbs_cmd_with_response(priv, CMD_802_11_SUBSCRIBE_EVENT, subscribed);
245 if (ret)
246 goto out_cmd;
247
248 got = lbs_tlv_find(tlv_type, subscribed->tlv, sizeof(subscribed->tlv));
249 if (got) {
250 value = got->value;
251 freq = got->freq;
252 events = le16_to_cpu(subscribed->events);
253
254 pos += snprintf(buf, len, "%d %d %d\n", value, freq,
255 !!(events & event_mask));
256 }
257
258 ret = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
259
260 out_cmd:
261 kfree(subscribed);
262
263 out_page:
264 free_page((unsigned long)buf);
265 return ret;
266 }
267
268
lbs_threshold_write(uint16_t tlv_type,uint16_t event_mask,struct file * file,const char __user * userbuf,size_t count,loff_t * ppos)269 static ssize_t lbs_threshold_write(uint16_t tlv_type, uint16_t event_mask,
270 struct file *file,
271 const char __user *userbuf, size_t count,
272 loff_t *ppos)
273 {
274 struct cmd_ds_802_11_subscribe_event *events;
275 struct mrvl_ie_thresholds *tlv;
276 struct lbs_private *priv = file->private_data;
277 int value, freq, new_mask;
278 uint16_t curr_mask;
279 char *buf;
280 int ret;
281
282 buf = memdup_user_nul(userbuf, min(count, len - 1));
283 if (IS_ERR(buf))
284 return PTR_ERR(buf);
285
286 ret = sscanf(buf, "%d %d %d", &value, &freq, &new_mask);
287 if (ret != 3) {
288 ret = -EINVAL;
289 goto out_page;
290 }
291 events = kzalloc(sizeof(*events), GFP_KERNEL);
292 if (!events) {
293 ret = -ENOMEM;
294 goto out_page;
295 }
296
297 events->hdr.size = cpu_to_le16(sizeof(*events));
298 events->action = cpu_to_le16(CMD_ACT_GET);
299
300 ret = lbs_cmd_with_response(priv, CMD_802_11_SUBSCRIBE_EVENT, events);
301 if (ret)
302 goto out_events;
303
304 curr_mask = le16_to_cpu(events->events);
305
306 if (new_mask)
307 new_mask = curr_mask | event_mask;
308 else
309 new_mask = curr_mask & ~event_mask;
310
311 /* Now everything is set and we can send stuff down to the firmware */
312
313 tlv = (void *)events->tlv;
314
315 events->action = cpu_to_le16(CMD_ACT_SET);
316 events->events = cpu_to_le16(new_mask);
317 tlv->header.type = cpu_to_le16(tlv_type);
318 tlv->header.len = cpu_to_le16(sizeof(*tlv) - sizeof(tlv->header));
319 tlv->value = value;
320 if (tlv_type != TLV_TYPE_BCNMISS)
321 tlv->freq = freq;
322
323 /* The command header, the action, the event mask, and one TLV */
324 events->hdr.size = cpu_to_le16(sizeof(events->hdr) + 4 + sizeof(*tlv));
325
326 ret = lbs_cmd_with_response(priv, CMD_802_11_SUBSCRIBE_EVENT, events);
327
328 if (!ret)
329 ret = count;
330 out_events:
331 kfree(events);
332 out_page:
333 kfree(buf);
334 return ret;
335 }
336
337
lbs_lowrssi_read(struct file * file,char __user * userbuf,size_t count,loff_t * ppos)338 static ssize_t lbs_lowrssi_read(struct file *file, char __user *userbuf,
339 size_t count, loff_t *ppos)
340 {
341 return lbs_threshold_read(TLV_TYPE_RSSI_LOW, CMD_SUBSCRIBE_RSSI_LOW,
342 file, userbuf, count, ppos);
343 }
344
345
lbs_lowrssi_write(struct file * file,const char __user * userbuf,size_t count,loff_t * ppos)346 static ssize_t lbs_lowrssi_write(struct file *file, const char __user *userbuf,
347 size_t count, loff_t *ppos)
348 {
349 return lbs_threshold_write(TLV_TYPE_RSSI_LOW, CMD_SUBSCRIBE_RSSI_LOW,
350 file, userbuf, count, ppos);
351 }
352
353
lbs_lowsnr_read(struct file * file,char __user * userbuf,size_t count,loff_t * ppos)354 static ssize_t lbs_lowsnr_read(struct file *file, char __user *userbuf,
355 size_t count, loff_t *ppos)
356 {
357 return lbs_threshold_read(TLV_TYPE_SNR_LOW, CMD_SUBSCRIBE_SNR_LOW,
358 file, userbuf, count, ppos);
359 }
360
361
lbs_lowsnr_write(struct file * file,const char __user * userbuf,size_t count,loff_t * ppos)362 static ssize_t lbs_lowsnr_write(struct file *file, const char __user *userbuf,
363 size_t count, loff_t *ppos)
364 {
365 return lbs_threshold_write(TLV_TYPE_SNR_LOW, CMD_SUBSCRIBE_SNR_LOW,
366 file, userbuf, count, ppos);
367 }
368
369
lbs_failcount_read(struct file * file,char __user * userbuf,size_t count,loff_t * ppos)370 static ssize_t lbs_failcount_read(struct file *file, char __user *userbuf,
371 size_t count, loff_t *ppos)
372 {
373 return lbs_threshold_read(TLV_TYPE_FAILCOUNT, CMD_SUBSCRIBE_FAILCOUNT,
374 file, userbuf, count, ppos);
375 }
376
377
lbs_failcount_write(struct file * file,const char __user * userbuf,size_t count,loff_t * ppos)378 static ssize_t lbs_failcount_write(struct file *file, const char __user *userbuf,
379 size_t count, loff_t *ppos)
380 {
381 return lbs_threshold_write(TLV_TYPE_FAILCOUNT, CMD_SUBSCRIBE_FAILCOUNT,
382 file, userbuf, count, ppos);
383 }
384
385
lbs_highrssi_read(struct file * file,char __user * userbuf,size_t count,loff_t * ppos)386 static ssize_t lbs_highrssi_read(struct file *file, char __user *userbuf,
387 size_t count, loff_t *ppos)
388 {
389 return lbs_threshold_read(TLV_TYPE_RSSI_HIGH, CMD_SUBSCRIBE_RSSI_HIGH,
390 file, userbuf, count, ppos);
391 }
392
393
lbs_highrssi_write(struct file * file,const char __user * userbuf,size_t count,loff_t * ppos)394 static ssize_t lbs_highrssi_write(struct file *file, const char __user *userbuf,
395 size_t count, loff_t *ppos)
396 {
397 return lbs_threshold_write(TLV_TYPE_RSSI_HIGH, CMD_SUBSCRIBE_RSSI_HIGH,
398 file, userbuf, count, ppos);
399 }
400
401
lbs_highsnr_read(struct file * file,char __user * userbuf,size_t count,loff_t * ppos)402 static ssize_t lbs_highsnr_read(struct file *file, char __user *userbuf,
403 size_t count, loff_t *ppos)
404 {
405 return lbs_threshold_read(TLV_TYPE_SNR_HIGH, CMD_SUBSCRIBE_SNR_HIGH,
406 file, userbuf, count, ppos);
407 }
408
409
lbs_highsnr_write(struct file * file,const char __user * userbuf,size_t count,loff_t * ppos)410 static ssize_t lbs_highsnr_write(struct file *file, const char __user *userbuf,
411 size_t count, loff_t *ppos)
412 {
413 return lbs_threshold_write(TLV_TYPE_SNR_HIGH, CMD_SUBSCRIBE_SNR_HIGH,
414 file, userbuf, count, ppos);
415 }
416
lbs_bcnmiss_read(struct file * file,char __user * userbuf,size_t count,loff_t * ppos)417 static ssize_t lbs_bcnmiss_read(struct file *file, char __user *userbuf,
418 size_t count, loff_t *ppos)
419 {
420 return lbs_threshold_read(TLV_TYPE_BCNMISS, CMD_SUBSCRIBE_BCNMISS,
421 file, userbuf, count, ppos);
422 }
423
424
lbs_bcnmiss_write(struct file * file,const char __user * userbuf,size_t count,loff_t * ppos)425 static ssize_t lbs_bcnmiss_write(struct file *file, const char __user *userbuf,
426 size_t count, loff_t *ppos)
427 {
428 return lbs_threshold_write(TLV_TYPE_BCNMISS, CMD_SUBSCRIBE_BCNMISS,
429 file, userbuf, count, ppos);
430 }
431
432
lbs_rdmac_read(struct file * file,char __user * userbuf,size_t count,loff_t * ppos)433 static ssize_t lbs_rdmac_read(struct file *file, char __user *userbuf,
434 size_t count, loff_t *ppos)
435 {
436 struct lbs_private *priv = file->private_data;
437 ssize_t pos = 0;
438 int ret;
439 unsigned long addr = get_zeroed_page(GFP_KERNEL);
440 char *buf = (char *)addr;
441 u32 val = 0;
442
443 if (!buf)
444 return -ENOMEM;
445
446 ret = lbs_get_reg(priv, CMD_MAC_REG_ACCESS, priv->mac_offset, &val);
447 mdelay(10);
448 if (!ret) {
449 pos = snprintf(buf, len, "MAC[0x%x] = 0x%08x\n",
450 priv->mac_offset, val);
451 ret = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
452 }
453 free_page(addr);
454 return ret;
455 }
456
lbs_rdmac_write(struct file * file,const char __user * userbuf,size_t count,loff_t * ppos)457 static ssize_t lbs_rdmac_write(struct file *file,
458 const char __user *userbuf,
459 size_t count, loff_t *ppos)
460 {
461 struct lbs_private *priv = file->private_data;
462 char *buf;
463
464 buf = memdup_user_nul(userbuf, min(count, len - 1));
465 if (IS_ERR(buf))
466 return PTR_ERR(buf);
467
468 priv->mac_offset = simple_strtoul(buf, NULL, 16);
469 kfree(buf);
470 return count;
471 }
472
lbs_wrmac_write(struct file * file,const char __user * userbuf,size_t count,loff_t * ppos)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;
480 u32 offset, value;
481 char *buf;
482
483 buf = memdup_user_nul(userbuf, min(count, len - 1));
484 if (IS_ERR(buf))
485 return PTR_ERR(buf);
486
487 res = sscanf(buf, "%x %x", &offset, &value);
488 if (res != 2) {
489 res = -EFAULT;
490 goto out_unlock;
491 }
492
493 res = lbs_set_reg(priv, CMD_MAC_REG_ACCESS, offset, value);
494 mdelay(10);
495
496 if (!res)
497 res = count;
498 out_unlock:
499 kfree(buf);
500 return res;
501 }
502
lbs_rdbbp_read(struct file * file,char __user * userbuf,size_t count,loff_t * ppos)503 static ssize_t lbs_rdbbp_read(struct file *file, char __user *userbuf,
504 size_t count, loff_t *ppos)
505 {
506 struct lbs_private *priv = file->private_data;
507 ssize_t pos = 0;
508 int ret;
509 unsigned long addr = get_zeroed_page(GFP_KERNEL);
510 char *buf = (char *)addr;
511 u32 val;
512
513 if (!buf)
514 return -ENOMEM;
515
516 ret = lbs_get_reg(priv, CMD_BBP_REG_ACCESS, priv->bbp_offset, &val);
517 mdelay(10);
518 if (!ret) {
519 pos = snprintf(buf, len, "BBP[0x%x] = 0x%08x\n",
520 priv->bbp_offset, val);
521 ret = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
522 }
523 free_page(addr);
524
525 return ret;
526 }
527
lbs_rdbbp_write(struct file * file,const char __user * userbuf,size_t count,loff_t * ppos)528 static ssize_t lbs_rdbbp_write(struct file *file,
529 const char __user *userbuf,
530 size_t count, loff_t *ppos)
531 {
532 struct lbs_private *priv = file->private_data;
533 char *buf;
534
535 buf = memdup_user_nul(userbuf, min(count, len - 1));
536 if (IS_ERR(buf))
537 return PTR_ERR(buf);
538
539 priv->bbp_offset = simple_strtoul(buf, NULL, 16);
540 kfree(buf);
541
542 return count;
543 }
544
lbs_wrbbp_write(struct file * file,const char __user * userbuf,size_t count,loff_t * ppos)545 static ssize_t lbs_wrbbp_write(struct file *file,
546 const char __user *userbuf,
547 size_t count, loff_t *ppos)
548 {
549
550 struct lbs_private *priv = file->private_data;
551 ssize_t res;
552 u32 offset, value;
553 char *buf;
554
555 buf = memdup_user_nul(userbuf, min(count, len - 1));
556 if (IS_ERR(buf))
557 return PTR_ERR(buf);
558
559 res = sscanf(buf, "%x %x", &offset, &value);
560 if (res != 2) {
561 res = -EFAULT;
562 goto out_unlock;
563 }
564
565 res = lbs_set_reg(priv, CMD_BBP_REG_ACCESS, offset, value);
566 mdelay(10);
567
568 if (!res)
569 res = count;
570 out_unlock:
571 kfree(buf);
572 return res;
573 }
574
lbs_rdrf_read(struct file * file,char __user * userbuf,size_t count,loff_t * ppos)575 static ssize_t lbs_rdrf_read(struct file *file, char __user *userbuf,
576 size_t count, loff_t *ppos)
577 {
578 struct lbs_private *priv = file->private_data;
579 ssize_t pos = 0;
580 int ret;
581 unsigned long addr = get_zeroed_page(GFP_KERNEL);
582 char *buf = (char *)addr;
583 u32 val;
584
585 if (!buf)
586 return -ENOMEM;
587
588 ret = lbs_get_reg(priv, CMD_RF_REG_ACCESS, priv->rf_offset, &val);
589 mdelay(10);
590 if (!ret) {
591 pos = snprintf(buf, len, "RF[0x%x] = 0x%08x\n",
592 priv->rf_offset, val);
593 ret = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
594 }
595 free_page(addr);
596
597 return ret;
598 }
599
lbs_rdrf_write(struct file * file,const char __user * userbuf,size_t count,loff_t * ppos)600 static ssize_t lbs_rdrf_write(struct file *file,
601 const char __user *userbuf,
602 size_t count, loff_t *ppos)
603 {
604 struct lbs_private *priv = file->private_data;
605 char *buf;
606
607 buf = memdup_user_nul(userbuf, min(count, len - 1));
608 if (IS_ERR(buf))
609 return PTR_ERR(buf);
610
611 priv->rf_offset = simple_strtoul(buf, NULL, 16);
612 kfree(buf);
613 return count;
614 }
615
lbs_wrrf_write(struct file * file,const char __user * userbuf,size_t count,loff_t * ppos)616 static ssize_t lbs_wrrf_write(struct file *file,
617 const char __user *userbuf,
618 size_t count, loff_t *ppos)
619 {
620
621 struct lbs_private *priv = file->private_data;
622 ssize_t res;
623 u32 offset, value;
624 char *buf;
625
626 buf = memdup_user_nul(userbuf, min(count, len - 1));
627 if (IS_ERR(buf))
628 return PTR_ERR(buf);
629
630 res = sscanf(buf, "%x %x", &offset, &value);
631 if (res != 2) {
632 res = -EFAULT;
633 goto out_unlock;
634 }
635
636 res = lbs_set_reg(priv, CMD_RF_REG_ACCESS, offset, value);
637 mdelay(10);
638
639 if (!res)
640 res = count;
641 out_unlock:
642 kfree(buf);
643 return res;
644 }
645
646 #define FOPS(fread, fwrite) { \
647 .owner = THIS_MODULE, \
648 .open = simple_open, \
649 .read = (fread), \
650 .write = (fwrite), \
651 .llseek = generic_file_llseek, \
652 }
653
654 struct lbs_debugfs_files {
655 const char *name;
656 umode_t perm;
657 struct file_operations fops;
658 };
659
660 static const struct lbs_debugfs_files debugfs_files[] = {
661 { "info", 0444, FOPS(lbs_dev_info, write_file_dummy), },
662 { "sleepparams", 0644, FOPS(lbs_sleepparams_read,
663 lbs_sleepparams_write), },
664 { "hostsleep", 0644, FOPS(lbs_host_sleep_read,
665 lbs_host_sleep_write), },
666 };
667
668 static const struct lbs_debugfs_files debugfs_events_files[] = {
669 {"low_rssi", 0644, FOPS(lbs_lowrssi_read,
670 lbs_lowrssi_write), },
671 {"low_snr", 0644, FOPS(lbs_lowsnr_read,
672 lbs_lowsnr_write), },
673 {"failure_count", 0644, FOPS(lbs_failcount_read,
674 lbs_failcount_write), },
675 {"beacon_missed", 0644, FOPS(lbs_bcnmiss_read,
676 lbs_bcnmiss_write), },
677 {"high_rssi", 0644, FOPS(lbs_highrssi_read,
678 lbs_highrssi_write), },
679 {"high_snr", 0644, FOPS(lbs_highsnr_read,
680 lbs_highsnr_write), },
681 };
682
683 static const struct lbs_debugfs_files debugfs_regs_files[] = {
684 {"rdmac", 0644, FOPS(lbs_rdmac_read, lbs_rdmac_write), },
685 {"wrmac", 0600, FOPS(NULL, lbs_wrmac_write), },
686 {"rdbbp", 0644, FOPS(lbs_rdbbp_read, lbs_rdbbp_write), },
687 {"wrbbp", 0600, FOPS(NULL, lbs_wrbbp_write), },
688 {"rdrf", 0644, FOPS(lbs_rdrf_read, lbs_rdrf_write), },
689 {"wrrf", 0600, FOPS(NULL, lbs_wrrf_write), },
690 };
691
lbs_debugfs_init(void)692 void lbs_debugfs_init(void)
693 {
694 if (!lbs_dir)
695 lbs_dir = debugfs_create_dir("lbs_wireless", NULL);
696 }
697
lbs_debugfs_remove(void)698 void lbs_debugfs_remove(void)
699 {
700 debugfs_remove(lbs_dir);
701 }
702
lbs_debugfs_init_one(struct lbs_private * priv,struct net_device * dev)703 void lbs_debugfs_init_one(struct lbs_private *priv, struct net_device *dev)
704 {
705 int i;
706 const struct lbs_debugfs_files *files;
707 if (!lbs_dir)
708 goto exit;
709
710 priv->debugfs_dir = debugfs_create_dir(dev->name, lbs_dir);
711
712 for (i=0; i<ARRAY_SIZE(debugfs_files); i++) {
713 files = &debugfs_files[i];
714 priv->debugfs_files[i] = debugfs_create_file(files->name,
715 files->perm,
716 priv->debugfs_dir,
717 priv,
718 &files->fops);
719 }
720
721 priv->events_dir = debugfs_create_dir("subscribed_events", priv->debugfs_dir);
722
723 for (i=0; i<ARRAY_SIZE(debugfs_events_files); i++) {
724 files = &debugfs_events_files[i];
725 priv->debugfs_events_files[i] = debugfs_create_file(files->name,
726 files->perm,
727 priv->events_dir,
728 priv,
729 &files->fops);
730 }
731
732 priv->regs_dir = debugfs_create_dir("registers", priv->debugfs_dir);
733
734 for (i=0; i<ARRAY_SIZE(debugfs_regs_files); i++) {
735 files = &debugfs_regs_files[i];
736 priv->debugfs_regs_files[i] = debugfs_create_file(files->name,
737 files->perm,
738 priv->regs_dir,
739 priv,
740 &files->fops);
741 }
742
743 #ifdef PROC_DEBUG
744 lbs_debug_init(priv);
745 #endif
746 exit:
747 return;
748 }
749
lbs_debugfs_remove_one(struct lbs_private * priv)750 void lbs_debugfs_remove_one(struct lbs_private *priv)
751 {
752 int i;
753
754 for(i=0; i<ARRAY_SIZE(debugfs_regs_files); i++)
755 debugfs_remove(priv->debugfs_regs_files[i]);
756
757 debugfs_remove(priv->regs_dir);
758
759 for(i=0; i<ARRAY_SIZE(debugfs_events_files); i++)
760 debugfs_remove(priv->debugfs_events_files[i]);
761
762 debugfs_remove(priv->events_dir);
763 #ifdef PROC_DEBUG
764 debugfs_remove(priv->debugfs_debug);
765 #endif
766 for(i=0; i<ARRAY_SIZE(debugfs_files); i++)
767 debugfs_remove(priv->debugfs_files[i]);
768 debugfs_remove(priv->debugfs_dir);
769 }
770
771
772
773 /* debug entry */
774
775 #ifdef PROC_DEBUG
776
777 #define item_size(n) (FIELD_SIZEOF(struct lbs_private, n))
778 #define item_addr(n) (offsetof(struct lbs_private, n))
779
780
781 struct debug_data {
782 char name[32];
783 u32 size;
784 size_t addr;
785 };
786
787 /* To debug any member of struct lbs_private, simply add one line here.
788 */
789 static struct debug_data items[] = {
790 {"psmode", item_size(psmode), item_addr(psmode)},
791 {"psstate", item_size(psstate), item_addr(psstate)},
792 };
793
794 static int num_of_items = ARRAY_SIZE(items);
795
796 /**
797 * lbs_debugfs_read - proc read function
798 *
799 * @file: file to read
800 * @userbuf: pointer to buffer
801 * @count: number of bytes to read
802 * @ppos: read data starting position
803 *
804 * returns: amount of data read or negative error code
805 */
lbs_debugfs_read(struct file * file,char __user * userbuf,size_t count,loff_t * ppos)806 static ssize_t lbs_debugfs_read(struct file *file, char __user *userbuf,
807 size_t count, loff_t *ppos)
808 {
809 int val = 0;
810 size_t pos = 0;
811 ssize_t res;
812 char *p;
813 int i;
814 struct debug_data *d;
815 unsigned long addr = get_zeroed_page(GFP_KERNEL);
816 char *buf = (char *)addr;
817 if (!buf)
818 return -ENOMEM;
819
820 p = buf;
821
822 d = file->private_data;
823
824 for (i = 0; i < num_of_items; i++) {
825 if (d[i].size == 1)
826 val = *((u8 *) d[i].addr);
827 else if (d[i].size == 2)
828 val = *((u16 *) d[i].addr);
829 else if (d[i].size == 4)
830 val = *((u32 *) d[i].addr);
831 else if (d[i].size == 8)
832 val = *((u64 *) d[i].addr);
833
834 pos += sprintf(p + pos, "%s=%d\n", d[i].name, val);
835 }
836
837 res = simple_read_from_buffer(userbuf, count, ppos, p, pos);
838
839 free_page(addr);
840 return res;
841 }
842
843 /**
844 * lbs_debugfs_write - proc write function
845 *
846 * @f: file pointer
847 * @buf: pointer to data buffer
848 * @cnt: data number to write
849 * @ppos: file position
850 *
851 * returns: amount of data written
852 */
lbs_debugfs_write(struct file * f,const char __user * buf,size_t cnt,loff_t * ppos)853 static ssize_t lbs_debugfs_write(struct file *f, const char __user *buf,
854 size_t cnt, loff_t *ppos)
855 {
856 int r, i;
857 char *pdata;
858 char *p;
859 char *p0;
860 char *p1;
861 char *p2;
862 struct debug_data *d = f->private_data;
863
864 if (cnt == 0)
865 return 0;
866
867 pdata = memdup_user_nul(buf, cnt);
868 if (IS_ERR(pdata))
869 return PTR_ERR(pdata);
870
871 p0 = pdata;
872 for (i = 0; i < num_of_items; i++) {
873 do {
874 p = strstr(p0, d[i].name);
875 if (p == NULL)
876 break;
877 p1 = strchr(p, '\n');
878 if (p1 == NULL)
879 break;
880 p0 = p1++;
881 p2 = strchr(p, '=');
882 if (!p2)
883 break;
884 p2++;
885 r = simple_strtoul(p2, NULL, 0);
886 if (d[i].size == 1)
887 *((u8 *) d[i].addr) = (u8) r;
888 else if (d[i].size == 2)
889 *((u16 *) d[i].addr) = (u16) r;
890 else if (d[i].size == 4)
891 *((u32 *) d[i].addr) = (u32) r;
892 else if (d[i].size == 8)
893 *((u64 *) d[i].addr) = (u64) r;
894 break;
895 } while (1);
896 }
897 kfree(pdata);
898
899 return (ssize_t)cnt;
900 }
901
902 static const struct file_operations lbs_debug_fops = {
903 .owner = THIS_MODULE,
904 .open = simple_open,
905 .write = lbs_debugfs_write,
906 .read = lbs_debugfs_read,
907 .llseek = default_llseek,
908 };
909
910 /**
911 * lbs_debug_init - create debug proc file
912 *
913 * @priv: pointer to &struct lbs_private
914 *
915 * returns: N/A
916 */
lbs_debug_init(struct lbs_private * priv)917 static void lbs_debug_init(struct lbs_private *priv)
918 {
919 int i;
920
921 if (!priv->debugfs_dir)
922 return;
923
924 for (i = 0; i < num_of_items; i++)
925 items[i].addr += (size_t) priv;
926
927 priv->debugfs_debug = debugfs_create_file("debug", 0644,
928 priv->debugfs_dir, &items[0],
929 &lbs_debug_fops);
930 }
931 #endif
932
