1 /*
2 * Marvell Wireless LAN device driver: debugfs
3 *
4 * Copyright (C) 2011, Marvell International Ltd.
5 *
6 * This software file (the "File") is distributed by Marvell International
7 * Ltd. under the terms of the GNU General Public License Version 2, June 1991
8 * (the "License"). You may use, redistribute and/or modify this File in
9 * accordance with the terms and conditions of the License, a copy of which
10 * is available by writing to the Free Software Foundation, Inc.,
11 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
12 * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
13 *
14 * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
16 * ARE EXPRESSLY DISCLAIMED. The License provides additional details about
17 * this warranty disclaimer.
18 */
19
20 #include <linux/debugfs.h>
21
22 #include "main.h"
23 #include "11n.h"
24
25
26 static struct dentry *mwifiex_dfs_dir;
27
28 static char *bss_modes[] = {
29 "Unknown",
30 "Ad-hoc",
31 "Managed",
32 "Auto"
33 };
34
35 /* size/addr for mwifiex_debug_info */
36 #define item_size(n) (FIELD_SIZEOF(struct mwifiex_debug_info, n))
37 #define item_addr(n) (offsetof(struct mwifiex_debug_info, n))
38
39 /* size/addr for struct mwifiex_adapter */
40 #define adapter_item_size(n) (FIELD_SIZEOF(struct mwifiex_adapter, n))
41 #define adapter_item_addr(n) (offsetof(struct mwifiex_adapter, n))
42
43 struct mwifiex_debug_data {
44 char name[32]; /* variable/array name */
45 u32 size; /* size of the variable/array */
46 size_t addr; /* address of the variable/array */
47 int num; /* number of variables in an array */
48 };
49
50 static struct mwifiex_debug_data items[] = {
51 {"int_counter", item_size(int_counter),
52 item_addr(int_counter), 1},
53 {"wmm_ac_vo", item_size(packets_out[WMM_AC_VO]),
54 item_addr(packets_out[WMM_AC_VO]), 1},
55 {"wmm_ac_vi", item_size(packets_out[WMM_AC_VI]),
56 item_addr(packets_out[WMM_AC_VI]), 1},
57 {"wmm_ac_be", item_size(packets_out[WMM_AC_BE]),
58 item_addr(packets_out[WMM_AC_BE]), 1},
59 {"wmm_ac_bk", item_size(packets_out[WMM_AC_BK]),
60 item_addr(packets_out[WMM_AC_BK]), 1},
61 {"max_tx_buf_size", item_size(max_tx_buf_size),
62 item_addr(max_tx_buf_size), 1},
63 {"tx_buf_size", item_size(tx_buf_size),
64 item_addr(tx_buf_size), 1},
65 {"curr_tx_buf_size", item_size(curr_tx_buf_size),
66 item_addr(curr_tx_buf_size), 1},
67 {"ps_mode", item_size(ps_mode),
68 item_addr(ps_mode), 1},
69 {"ps_state", item_size(ps_state),
70 item_addr(ps_state), 1},
71 {"is_deep_sleep", item_size(is_deep_sleep),
72 item_addr(is_deep_sleep), 1},
73 {"wakeup_dev_req", item_size(pm_wakeup_card_req),
74 item_addr(pm_wakeup_card_req), 1},
75 {"wakeup_tries", item_size(pm_wakeup_fw_try),
76 item_addr(pm_wakeup_fw_try), 1},
77 {"hs_configured", item_size(is_hs_configured),
78 item_addr(is_hs_configured), 1},
79 {"hs_activated", item_size(hs_activated),
80 item_addr(hs_activated), 1},
81 {"num_tx_timeout", item_size(num_tx_timeout),
82 item_addr(num_tx_timeout), 1},
83 {"num_cmd_timeout", item_size(num_cmd_timeout),
84 item_addr(num_cmd_timeout), 1},
85 {"timeout_cmd_id", item_size(timeout_cmd_id),
86 item_addr(timeout_cmd_id), 1},
87 {"timeout_cmd_act", item_size(timeout_cmd_act),
88 item_addr(timeout_cmd_act), 1},
89 {"last_cmd_id", item_size(last_cmd_id),
90 item_addr(last_cmd_id), DBG_CMD_NUM},
91 {"last_cmd_act", item_size(last_cmd_act),
92 item_addr(last_cmd_act), DBG_CMD_NUM},
93 {"last_cmd_index", item_size(last_cmd_index),
94 item_addr(last_cmd_index), 1},
95 {"last_cmd_resp_id", item_size(last_cmd_resp_id),
96 item_addr(last_cmd_resp_id), DBG_CMD_NUM},
97 {"last_cmd_resp_index", item_size(last_cmd_resp_index),
98 item_addr(last_cmd_resp_index), 1},
99 {"last_event", item_size(last_event),
100 item_addr(last_event), DBG_CMD_NUM},
101 {"last_event_index", item_size(last_event_index),
102 item_addr(last_event_index), 1},
103 {"num_cmd_h2c_fail", item_size(num_cmd_host_to_card_failure),
104 item_addr(num_cmd_host_to_card_failure), 1},
105 {"num_cmd_sleep_cfm_fail",
106 item_size(num_cmd_sleep_cfm_host_to_card_failure),
107 item_addr(num_cmd_sleep_cfm_host_to_card_failure), 1},
108 {"num_tx_h2c_fail", item_size(num_tx_host_to_card_failure),
109 item_addr(num_tx_host_to_card_failure), 1},
110 {"num_evt_deauth", item_size(num_event_deauth),
111 item_addr(num_event_deauth), 1},
112 {"num_evt_disassoc", item_size(num_event_disassoc),
113 item_addr(num_event_disassoc), 1},
114 {"num_evt_link_lost", item_size(num_event_link_lost),
115 item_addr(num_event_link_lost), 1},
116 {"num_cmd_deauth", item_size(num_cmd_deauth),
117 item_addr(num_cmd_deauth), 1},
118 {"num_cmd_assoc_ok", item_size(num_cmd_assoc_success),
119 item_addr(num_cmd_assoc_success), 1},
120 {"num_cmd_assoc_fail", item_size(num_cmd_assoc_failure),
121 item_addr(num_cmd_assoc_failure), 1},
122 {"cmd_sent", item_size(cmd_sent),
123 item_addr(cmd_sent), 1},
124 {"data_sent", item_size(data_sent),
125 item_addr(data_sent), 1},
126 {"cmd_resp_received", item_size(cmd_resp_received),
127 item_addr(cmd_resp_received), 1},
128 {"event_received", item_size(event_received),
129 item_addr(event_received), 1},
130
131 /* variables defined in struct mwifiex_adapter */
132 {"cmd_pending", adapter_item_size(cmd_pending),
133 adapter_item_addr(cmd_pending), 1},
134 {"tx_pending", adapter_item_size(tx_pending),
135 adapter_item_addr(tx_pending), 1},
136 {"rx_pending", adapter_item_size(rx_pending),
137 adapter_item_addr(rx_pending), 1},
138 };
139
140 static int num_of_items = ARRAY_SIZE(items);
141
142 /*
143 * Generic proc file open handler.
144 *
145 * This function is called every time a file is accessed for read or write.
146 */
147 static int
mwifiex_open_generic(struct inode * inode,struct file * file)148 mwifiex_open_generic(struct inode *inode, struct file *file)
149 {
150 file->private_data = inode->i_private;
151 return 0;
152 }
153
154 /*
155 * Proc info file read handler.
156 *
157 * This function is called when the 'info' file is opened for reading.
158 * It prints the following driver related information -
159 * - Driver name
160 * - Driver version
161 * - Driver extended version
162 * - Interface name
163 * - BSS mode
164 * - Media state (connected or disconnected)
165 * - MAC address
166 * - Total number of Tx bytes
167 * - Total number of Rx bytes
168 * - Total number of Tx packets
169 * - Total number of Rx packets
170 * - Total number of dropped Tx packets
171 * - Total number of dropped Rx packets
172 * - Total number of corrupted Tx packets
173 * - Total number of corrupted Rx packets
174 * - Carrier status (on or off)
175 * - Tx queue status (started or stopped)
176 *
177 * For STA mode drivers, it also prints the following extra -
178 * - ESSID
179 * - BSSID
180 * - Channel
181 * - Region code
182 * - Multicast count
183 * - Multicast addresses
184 */
185 static ssize_t
mwifiex_info_read(struct file * file,char __user * ubuf,size_t count,loff_t * ppos)186 mwifiex_info_read(struct file *file, char __user *ubuf,
187 size_t count, loff_t *ppos)
188 {
189 struct mwifiex_private *priv =
190 (struct mwifiex_private *) file->private_data;
191 struct net_device *netdev = priv->netdev;
192 struct netdev_hw_addr *ha;
193 unsigned long page = get_zeroed_page(GFP_KERNEL);
194 char *p = (char *) page, fmt[64];
195 struct mwifiex_bss_info info;
196 ssize_t ret;
197 int i = 0;
198
199 if (!p)
200 return -ENOMEM;
201
202 memset(&info, 0, sizeof(info));
203 ret = mwifiex_get_bss_info(priv, &info);
204 if (ret)
205 goto free_and_exit;
206
207 mwifiex_drv_get_driver_version(priv->adapter, fmt, sizeof(fmt) - 1);
208
209 if (!priv->version_str[0])
210 mwifiex_get_ver_ext(priv);
211
212 p += sprintf(p, "driver_name = " "\"mwifiex\"\n");
213 p += sprintf(p, "driver_version = %s", fmt);
214 p += sprintf(p, "\nverext = %s", priv->version_str);
215 p += sprintf(p, "\ninterface_name=\"%s\"\n", netdev->name);
216 p += sprintf(p, "bss_mode=\"%s\"\n", bss_modes[info.bss_mode]);
217 p += sprintf(p, "media_state=\"%s\"\n",
218 (!priv->media_connected ? "Disconnected" : "Connected"));
219 p += sprintf(p, "mac_address=\"%pM\"\n", netdev->dev_addr);
220
221 if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA) {
222 p += sprintf(p, "multicast_count=\"%d\"\n",
223 netdev_mc_count(netdev));
224 p += sprintf(p, "essid=\"%s\"\n", info.ssid.ssid);
225 p += sprintf(p, "bssid=\"%pM\"\n", info.bssid);
226 p += sprintf(p, "channel=\"%d\"\n", (int) info.bss_chan);
227 p += sprintf(p, "region_code = \"%02x\"\n", info.region_code);
228
229 netdev_for_each_mc_addr(ha, netdev)
230 p += sprintf(p, "multicast_address[%d]=\"%pM\"\n",
231 i++, ha->addr);
232 }
233
234 p += sprintf(p, "num_tx_bytes = %lu\n", priv->stats.tx_bytes);
235 p += sprintf(p, "num_rx_bytes = %lu\n", priv->stats.rx_bytes);
236 p += sprintf(p, "num_tx_pkts = %lu\n", priv->stats.tx_packets);
237 p += sprintf(p, "num_rx_pkts = %lu\n", priv->stats.rx_packets);
238 p += sprintf(p, "num_tx_pkts_dropped = %lu\n", priv->stats.tx_dropped);
239 p += sprintf(p, "num_rx_pkts_dropped = %lu\n", priv->stats.rx_dropped);
240 p += sprintf(p, "num_tx_pkts_err = %lu\n", priv->stats.tx_errors);
241 p += sprintf(p, "num_rx_pkts_err = %lu\n", priv->stats.rx_errors);
242 p += sprintf(p, "carrier %s\n", ((netif_carrier_ok(priv->netdev))
243 ? "on" : "off"));
244 p += sprintf(p, "tx queue %s\n", ((netif_queue_stopped(priv->netdev))
245 ? "stopped" : "started"));
246
247 ret = simple_read_from_buffer(ubuf, count, ppos, (char *) page,
248 (unsigned long) p - page);
249
250 free_and_exit:
251 free_page(page);
252 return ret;
253 }
254
255 /*
256 * Proc getlog file read handler.
257 *
258 * This function is called when the 'getlog' file is opened for reading
259 * It prints the following log information -
260 * - Number of multicast Tx frames
261 * - Number of failed packets
262 * - Number of Tx retries
263 * - Number of multicast Tx retries
264 * - Number of duplicate frames
265 * - Number of RTS successes
266 * - Number of RTS failures
267 * - Number of ACK failures
268 * - Number of fragmented Rx frames
269 * - Number of multicast Rx frames
270 * - Number of FCS errors
271 * - Number of Tx frames
272 * - WEP ICV error counts
273 */
274 static ssize_t
mwifiex_getlog_read(struct file * file,char __user * ubuf,size_t count,loff_t * ppos)275 mwifiex_getlog_read(struct file *file, char __user *ubuf,
276 size_t count, loff_t *ppos)
277 {
278 struct mwifiex_private *priv =
279 (struct mwifiex_private *) file->private_data;
280 unsigned long page = get_zeroed_page(GFP_KERNEL);
281 char *p = (char *) page;
282 ssize_t ret;
283 struct mwifiex_ds_get_stats stats;
284
285 if (!p)
286 return -ENOMEM;
287
288 memset(&stats, 0, sizeof(stats));
289 ret = mwifiex_get_stats_info(priv, &stats);
290 if (ret)
291 goto free_and_exit;
292
293 p += sprintf(p, "\n"
294 "mcasttxframe %u\n"
295 "failed %u\n"
296 "retry %u\n"
297 "multiretry %u\n"
298 "framedup %u\n"
299 "rtssuccess %u\n"
300 "rtsfailure %u\n"
301 "ackfailure %u\n"
302 "rxfrag %u\n"
303 "mcastrxframe %u\n"
304 "fcserror %u\n"
305 "txframe %u\n"
306 "wepicverrcnt-1 %u\n"
307 "wepicverrcnt-2 %u\n"
308 "wepicverrcnt-3 %u\n"
309 "wepicverrcnt-4 %u\n",
310 stats.mcast_tx_frame,
311 stats.failed,
312 stats.retry,
313 stats.multi_retry,
314 stats.frame_dup,
315 stats.rts_success,
316 stats.rts_failure,
317 stats.ack_failure,
318 stats.rx_frag,
319 stats.mcast_rx_frame,
320 stats.fcs_error,
321 stats.tx_frame,
322 stats.wep_icv_error[0],
323 stats.wep_icv_error[1],
324 stats.wep_icv_error[2],
325 stats.wep_icv_error[3]);
326
327
328 ret = simple_read_from_buffer(ubuf, count, ppos, (char *) page,
329 (unsigned long) p - page);
330
331 free_and_exit:
332 free_page(page);
333 return ret;
334 }
335
336 static struct mwifiex_debug_info info;
337
338 /*
339 * Proc debug file read handler.
340 *
341 * This function is called when the 'debug' file is opened for reading
342 * It prints the following log information -
343 * - Interrupt count
344 * - WMM AC VO packets count
345 * - WMM AC VI packets count
346 * - WMM AC BE packets count
347 * - WMM AC BK packets count
348 * - Maximum Tx buffer size
349 * - Tx buffer size
350 * - Current Tx buffer size
351 * - Power Save mode
352 * - Power Save state
353 * - Deep Sleep status
354 * - Device wakeup required status
355 * - Number of wakeup tries
356 * - Host Sleep configured status
357 * - Host Sleep activated status
358 * - Number of Tx timeouts
359 * - Number of command timeouts
360 * - Last timed out command ID
361 * - Last timed out command action
362 * - Last command ID
363 * - Last command action
364 * - Last command index
365 * - Last command response ID
366 * - Last command response index
367 * - Last event
368 * - Last event index
369 * - Number of host to card command failures
370 * - Number of sleep confirm command failures
371 * - Number of host to card data failure
372 * - Number of deauthentication events
373 * - Number of disassociation events
374 * - Number of link lost events
375 * - Number of deauthentication commands
376 * - Number of association success commands
377 * - Number of association failure commands
378 * - Number of commands sent
379 * - Number of data packets sent
380 * - Number of command responses received
381 * - Number of events received
382 * - Tx BA stream table (TID, RA)
383 * - Rx reorder table (TID, TA, Start window, Window size, Buffer)
384 */
385 static ssize_t
mwifiex_debug_read(struct file * file,char __user * ubuf,size_t count,loff_t * ppos)386 mwifiex_debug_read(struct file *file, char __user *ubuf,
387 size_t count, loff_t *ppos)
388 {
389 struct mwifiex_private *priv =
390 (struct mwifiex_private *) file->private_data;
391 struct mwifiex_debug_data *d = &items[0];
392 unsigned long page = get_zeroed_page(GFP_KERNEL);
393 char *p = (char *) page;
394 ssize_t ret;
395 size_t size, addr;
396 long val;
397 int i, j;
398
399 if (!p)
400 return -ENOMEM;
401
402 ret = mwifiex_get_debug_info(priv, &info);
403 if (ret)
404 goto free_and_exit;
405
406 for (i = 0; i < num_of_items; i++) {
407 p += sprintf(p, "%s=", d[i].name);
408
409 size = d[i].size / d[i].num;
410
411 if (i < (num_of_items - 3))
412 addr = d[i].addr + (size_t) &info;
413 else /* The last 3 items are struct mwifiex_adapter variables */
414 addr = d[i].addr + (size_t) priv->adapter;
415
416 for (j = 0; j < d[i].num; j++) {
417 switch (size) {
418 case 1:
419 val = *((u8 *) addr);
420 break;
421 case 2:
422 val = *((u16 *) addr);
423 break;
424 case 4:
425 val = *((u32 *) addr);
426 break;
427 case 8:
428 val = *((long long *) addr);
429 break;
430 default:
431 val = -1;
432 break;
433 }
434
435 p += sprintf(p, "%#lx ", val);
436 addr += size;
437 }
438
439 p += sprintf(p, "\n");
440 }
441
442 if (info.tx_tbl_num) {
443 p += sprintf(p, "Tx BA stream table:\n");
444 for (i = 0; i < info.tx_tbl_num; i++)
445 p += sprintf(p, "tid = %d, ra = %pM\n",
446 info.tx_tbl[i].tid, info.tx_tbl[i].ra);
447 }
448
449 if (info.rx_tbl_num) {
450 p += sprintf(p, "Rx reorder table:\n");
451 for (i = 0; i < info.rx_tbl_num; i++) {
452 p += sprintf(p, "tid = %d, ta = %pM, "
453 "start_win = %d, "
454 "win_size = %d, buffer: ",
455 info.rx_tbl[i].tid,
456 info.rx_tbl[i].ta,
457 info.rx_tbl[i].start_win,
458 info.rx_tbl[i].win_size);
459
460 for (j = 0; j < info.rx_tbl[i].win_size; j++)
461 p += sprintf(p, "%c ",
462 info.rx_tbl[i].buffer[j] ?
463 '1' : '0');
464
465 p += sprintf(p, "\n");
466 }
467 }
468
469 ret = simple_read_from_buffer(ubuf, count, ppos, (char *) page,
470 (unsigned long) p - page);
471
472 free_and_exit:
473 free_page(page);
474 return ret;
475 }
476
477 static u32 saved_reg_type, saved_reg_offset, saved_reg_value;
478
479 /*
480 * Proc regrdwr file write handler.
481 *
482 * This function is called when the 'regrdwr' file is opened for writing
483 *
484 * This function can be used to write to a register.
485 */
486 static ssize_t
mwifiex_regrdwr_write(struct file * file,const char __user * ubuf,size_t count,loff_t * ppos)487 mwifiex_regrdwr_write(struct file *file,
488 const char __user *ubuf, size_t count, loff_t *ppos)
489 {
490 unsigned long addr = get_zeroed_page(GFP_KERNEL);
491 char *buf = (char *) addr;
492 size_t buf_size = min(count, (size_t) (PAGE_SIZE - 1));
493 int ret;
494 u32 reg_type = 0, reg_offset = 0, reg_value = UINT_MAX;
495
496 if (!buf)
497 return -ENOMEM;
498
499
500 if (copy_from_user(buf, ubuf, buf_size)) {
501 ret = -EFAULT;
502 goto done;
503 }
504
505 sscanf(buf, "%u %x %x", ®_type, ®_offset, ®_value);
506
507 if (reg_type == 0 || reg_offset == 0) {
508 ret = -EINVAL;
509 goto done;
510 } else {
511 saved_reg_type = reg_type;
512 saved_reg_offset = reg_offset;
513 saved_reg_value = reg_value;
514 ret = count;
515 }
516 done:
517 free_page(addr);
518 return ret;
519 }
520
521 /*
522 * Proc regrdwr file read handler.
523 *
524 * This function is called when the 'regrdwr' file is opened for reading
525 *
526 * This function can be used to read from a register.
527 */
528 static ssize_t
mwifiex_regrdwr_read(struct file * file,char __user * ubuf,size_t count,loff_t * ppos)529 mwifiex_regrdwr_read(struct file *file, char __user *ubuf,
530 size_t count, loff_t *ppos)
531 {
532 struct mwifiex_private *priv =
533 (struct mwifiex_private *) file->private_data;
534 unsigned long addr = get_zeroed_page(GFP_KERNEL);
535 char *buf = (char *) addr;
536 int pos = 0, ret = 0;
537 u32 reg_value;
538
539 if (!buf)
540 return -ENOMEM;
541
542 if (!saved_reg_type) {
543 /* No command has been given */
544 pos += snprintf(buf, PAGE_SIZE, "0");
545 goto done;
546 }
547 /* Set command has been given */
548 if (saved_reg_value != UINT_MAX) {
549 ret = mwifiex_reg_write(priv, saved_reg_type, saved_reg_offset,
550 saved_reg_value);
551
552 pos += snprintf(buf, PAGE_SIZE, "%u 0x%x 0x%x\n",
553 saved_reg_type, saved_reg_offset,
554 saved_reg_value);
555
556 ret = simple_read_from_buffer(ubuf, count, ppos, buf, pos);
557
558 goto done;
559 }
560 /* Get command has been given */
561 ret = mwifiex_reg_read(priv, saved_reg_type,
562 saved_reg_offset, ®_value);
563 if (ret) {
564 ret = -EINVAL;
565 goto done;
566 }
567
568 pos += snprintf(buf, PAGE_SIZE, "%u 0x%x 0x%x\n", saved_reg_type,
569 saved_reg_offset, reg_value);
570
571 ret = simple_read_from_buffer(ubuf, count, ppos, buf, pos);
572
573 done:
574 free_page(addr);
575 return ret;
576 }
577
578 static u32 saved_offset = -1, saved_bytes = -1;
579
580 /*
581 * Proc rdeeprom file write handler.
582 *
583 * This function is called when the 'rdeeprom' file is opened for writing
584 *
585 * This function can be used to write to a RDEEPROM location.
586 */
587 static ssize_t
mwifiex_rdeeprom_write(struct file * file,const char __user * ubuf,size_t count,loff_t * ppos)588 mwifiex_rdeeprom_write(struct file *file,
589 const char __user *ubuf, size_t count, loff_t *ppos)
590 {
591 unsigned long addr = get_zeroed_page(GFP_KERNEL);
592 char *buf = (char *) addr;
593 size_t buf_size = min(count, (size_t) (PAGE_SIZE - 1));
594 int ret = 0;
595 int offset = -1, bytes = -1;
596
597 if (!buf)
598 return -ENOMEM;
599
600
601 if (copy_from_user(buf, ubuf, buf_size)) {
602 ret = -EFAULT;
603 goto done;
604 }
605
606 sscanf(buf, "%d %d", &offset, &bytes);
607
608 if (offset == -1 || bytes == -1) {
609 ret = -EINVAL;
610 goto done;
611 } else {
612 saved_offset = offset;
613 saved_bytes = bytes;
614 ret = count;
615 }
616 done:
617 free_page(addr);
618 return ret;
619 }
620
621 /*
622 * Proc rdeeprom read write handler.
623 *
624 * This function is called when the 'rdeeprom' file is opened for reading
625 *
626 * This function can be used to read from a RDEEPROM location.
627 */
628 static ssize_t
mwifiex_rdeeprom_read(struct file * file,char __user * ubuf,size_t count,loff_t * ppos)629 mwifiex_rdeeprom_read(struct file *file, char __user *ubuf,
630 size_t count, loff_t *ppos)
631 {
632 struct mwifiex_private *priv =
633 (struct mwifiex_private *) file->private_data;
634 unsigned long addr = get_zeroed_page(GFP_KERNEL);
635 char *buf = (char *) addr;
636 int pos = 0, ret = 0, i;
637 u8 value[MAX_EEPROM_DATA];
638
639 if (!buf)
640 return -ENOMEM;
641
642 if (saved_offset == -1) {
643 /* No command has been given */
644 pos += snprintf(buf, PAGE_SIZE, "0");
645 goto done;
646 }
647
648 /* Get command has been given */
649 ret = mwifiex_eeprom_read(priv, (u16) saved_offset,
650 (u16) saved_bytes, value);
651 if (ret) {
652 ret = -EINVAL;
653 goto done;
654 }
655
656 pos += snprintf(buf, PAGE_SIZE, "%d %d ", saved_offset, saved_bytes);
657
658 for (i = 0; i < saved_bytes; i++)
659 pos += snprintf(buf + strlen(buf), PAGE_SIZE, "%d ", value[i]);
660
661 ret = simple_read_from_buffer(ubuf, count, ppos, buf, pos);
662
663 done:
664 free_page(addr);
665 return ret;
666 }
667
668
669 #define MWIFIEX_DFS_ADD_FILE(name) do { \
670 if (!debugfs_create_file(#name, 0644, priv->dfs_dev_dir, \
671 priv, &mwifiex_dfs_##name##_fops)) \
672 return; \
673 } while (0);
674
675 #define MWIFIEX_DFS_FILE_OPS(name) \
676 static const struct file_operations mwifiex_dfs_##name##_fops = { \
677 .read = mwifiex_##name##_read, \
678 .write = mwifiex_##name##_write, \
679 .open = mwifiex_open_generic, \
680 };
681
682 #define MWIFIEX_DFS_FILE_READ_OPS(name) \
683 static const struct file_operations mwifiex_dfs_##name##_fops = { \
684 .read = mwifiex_##name##_read, \
685 .open = mwifiex_open_generic, \
686 };
687
688 #define MWIFIEX_DFS_FILE_WRITE_OPS(name) \
689 static const struct file_operations mwifiex_dfs_##name##_fops = { \
690 .write = mwifiex_##name##_write, \
691 .open = mwifiex_open_generic, \
692 };
693
694
695 MWIFIEX_DFS_FILE_READ_OPS(info);
696 MWIFIEX_DFS_FILE_READ_OPS(debug);
697 MWIFIEX_DFS_FILE_READ_OPS(getlog);
698 MWIFIEX_DFS_FILE_OPS(regrdwr);
699 MWIFIEX_DFS_FILE_OPS(rdeeprom);
700
701 /*
702 * This function creates the debug FS directory structure and the files.
703 */
704 void
mwifiex_dev_debugfs_init(struct mwifiex_private * priv)705 mwifiex_dev_debugfs_init(struct mwifiex_private *priv)
706 {
707 if (!mwifiex_dfs_dir || !priv)
708 return;
709
710 priv->dfs_dev_dir = debugfs_create_dir(priv->netdev->name,
711 mwifiex_dfs_dir);
712
713 if (!priv->dfs_dev_dir)
714 return;
715
716 MWIFIEX_DFS_ADD_FILE(info);
717 MWIFIEX_DFS_ADD_FILE(debug);
718 MWIFIEX_DFS_ADD_FILE(getlog);
719 MWIFIEX_DFS_ADD_FILE(regrdwr);
720 MWIFIEX_DFS_ADD_FILE(rdeeprom);
721 }
722
723 /*
724 * This function removes the debug FS directory structure and the files.
725 */
726 void
mwifiex_dev_debugfs_remove(struct mwifiex_private * priv)727 mwifiex_dev_debugfs_remove(struct mwifiex_private *priv)
728 {
729 if (!priv)
730 return;
731
732 debugfs_remove_recursive(priv->dfs_dev_dir);
733 }
734
735 /*
736 * This function creates the top level proc directory.
737 */
738 void
mwifiex_debugfs_init(void)739 mwifiex_debugfs_init(void)
740 {
741 if (!mwifiex_dfs_dir)
742 mwifiex_dfs_dir = debugfs_create_dir("mwifiex", NULL);
743 }
744
745 /*
746 * This function removes the top level proc directory.
747 */
748 void
mwifiex_debugfs_remove(void)749 mwifiex_debugfs_remove(void)
750 {
751 if (mwifiex_dfs_dir)
752 debugfs_remove(mwifiex_dfs_dir);
753 }
754