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 "UNSPECIFIED",
30 "ADHOC",
31 "STATION",
32 "AP",
33 "AP_VLAN",
34 "WDS",
35 "MONITOR",
36 "MESH_POINT",
37 "P2P_CLIENT",
38 "P2P_GO",
39 "P2P_DEVICE",
40 };
41
42 /* size/addr for mwifiex_debug_info */
43 #define item_size(n) (FIELD_SIZEOF(struct mwifiex_debug_info, n))
44 #define item_addr(n) (offsetof(struct mwifiex_debug_info, n))
45
46 /* size/addr for struct mwifiex_adapter */
47 #define adapter_item_size(n) (FIELD_SIZEOF(struct mwifiex_adapter, n))
48 #define adapter_item_addr(n) (offsetof(struct mwifiex_adapter, n))
49
50 struct mwifiex_debug_data {
51 char name[32]; /* variable/array name */
52 u32 size; /* size of the variable/array */
53 size_t addr; /* address of the variable/array */
54 int num; /* number of variables in an array */
55 };
56
57 static struct mwifiex_debug_data items[] = {
58 {"int_counter", item_size(int_counter),
59 item_addr(int_counter), 1},
60 {"wmm_ac_vo", item_size(packets_out[WMM_AC_VO]),
61 item_addr(packets_out[WMM_AC_VO]), 1},
62 {"wmm_ac_vi", item_size(packets_out[WMM_AC_VI]),
63 item_addr(packets_out[WMM_AC_VI]), 1},
64 {"wmm_ac_be", item_size(packets_out[WMM_AC_BE]),
65 item_addr(packets_out[WMM_AC_BE]), 1},
66 {"wmm_ac_bk", item_size(packets_out[WMM_AC_BK]),
67 item_addr(packets_out[WMM_AC_BK]), 1},
68 {"tx_buf_size", item_size(tx_buf_size),
69 item_addr(tx_buf_size), 1},
70 {"curr_tx_buf_size", item_size(curr_tx_buf_size),
71 item_addr(curr_tx_buf_size), 1},
72 {"ps_mode", item_size(ps_mode),
73 item_addr(ps_mode), 1},
74 {"ps_state", item_size(ps_state),
75 item_addr(ps_state), 1},
76 {"is_deep_sleep", item_size(is_deep_sleep),
77 item_addr(is_deep_sleep), 1},
78 {"wakeup_dev_req", item_size(pm_wakeup_card_req),
79 item_addr(pm_wakeup_card_req), 1},
80 {"wakeup_tries", item_size(pm_wakeup_fw_try),
81 item_addr(pm_wakeup_fw_try), 1},
82 {"hs_configured", item_size(is_hs_configured),
83 item_addr(is_hs_configured), 1},
84 {"hs_activated", item_size(hs_activated),
85 item_addr(hs_activated), 1},
86 {"num_tx_timeout", item_size(num_tx_timeout),
87 item_addr(num_tx_timeout), 1},
88 {"num_cmd_timeout", item_size(num_cmd_timeout),
89 item_addr(num_cmd_timeout), 1},
90 {"timeout_cmd_id", item_size(timeout_cmd_id),
91 item_addr(timeout_cmd_id), 1},
92 {"timeout_cmd_act", item_size(timeout_cmd_act),
93 item_addr(timeout_cmd_act), 1},
94 {"last_cmd_id", item_size(last_cmd_id),
95 item_addr(last_cmd_id), DBG_CMD_NUM},
96 {"last_cmd_act", item_size(last_cmd_act),
97 item_addr(last_cmd_act), DBG_CMD_NUM},
98 {"last_cmd_index", item_size(last_cmd_index),
99 item_addr(last_cmd_index), 1},
100 {"last_cmd_resp_id", item_size(last_cmd_resp_id),
101 item_addr(last_cmd_resp_id), DBG_CMD_NUM},
102 {"last_cmd_resp_index", item_size(last_cmd_resp_index),
103 item_addr(last_cmd_resp_index), 1},
104 {"last_event", item_size(last_event),
105 item_addr(last_event), DBG_CMD_NUM},
106 {"last_event_index", item_size(last_event_index),
107 item_addr(last_event_index), 1},
108 {"num_cmd_h2c_fail", item_size(num_cmd_host_to_card_failure),
109 item_addr(num_cmd_host_to_card_failure), 1},
110 {"num_cmd_sleep_cfm_fail",
111 item_size(num_cmd_sleep_cfm_host_to_card_failure),
112 item_addr(num_cmd_sleep_cfm_host_to_card_failure), 1},
113 {"num_tx_h2c_fail", item_size(num_tx_host_to_card_failure),
114 item_addr(num_tx_host_to_card_failure), 1},
115 {"num_evt_deauth", item_size(num_event_deauth),
116 item_addr(num_event_deauth), 1},
117 {"num_evt_disassoc", item_size(num_event_disassoc),
118 item_addr(num_event_disassoc), 1},
119 {"num_evt_link_lost", item_size(num_event_link_lost),
120 item_addr(num_event_link_lost), 1},
121 {"num_cmd_deauth", item_size(num_cmd_deauth),
122 item_addr(num_cmd_deauth), 1},
123 {"num_cmd_assoc_ok", item_size(num_cmd_assoc_success),
124 item_addr(num_cmd_assoc_success), 1},
125 {"num_cmd_assoc_fail", item_size(num_cmd_assoc_failure),
126 item_addr(num_cmd_assoc_failure), 1},
127 {"cmd_sent", item_size(cmd_sent),
128 item_addr(cmd_sent), 1},
129 {"data_sent", item_size(data_sent),
130 item_addr(data_sent), 1},
131 {"cmd_resp_received", item_size(cmd_resp_received),
132 item_addr(cmd_resp_received), 1},
133 {"event_received", item_size(event_received),
134 item_addr(event_received), 1},
135
136 /* variables defined in struct mwifiex_adapter */
137 {"cmd_pending", adapter_item_size(cmd_pending),
138 adapter_item_addr(cmd_pending), 1},
139 {"tx_pending", adapter_item_size(tx_pending),
140 adapter_item_addr(tx_pending), 1},
141 {"rx_pending", adapter_item_size(rx_pending),
142 adapter_item_addr(rx_pending), 1},
143 };
144
145 static int num_of_items = ARRAY_SIZE(items);
146
147 /*
148 * Proc info file read handler.
149 *
150 * This function is called when the 'info' file is opened for reading.
151 * It prints the following driver related information -
152 * - Driver name
153 * - Driver version
154 * - Driver extended version
155 * - Interface name
156 * - BSS mode
157 * - Media state (connected or disconnected)
158 * - MAC address
159 * - Total number of Tx bytes
160 * - Total number of Rx bytes
161 * - Total number of Tx packets
162 * - Total number of Rx packets
163 * - Total number of dropped Tx packets
164 * - Total number of dropped Rx packets
165 * - Total number of corrupted Tx packets
166 * - Total number of corrupted Rx packets
167 * - Carrier status (on or off)
168 * - Tx queue status (started or stopped)
169 *
170 * For STA mode drivers, it also prints the following extra -
171 * - ESSID
172 * - BSSID
173 * - Channel
174 * - Region code
175 * - Multicast count
176 * - Multicast addresses
177 */
178 static ssize_t
mwifiex_info_read(struct file * file,char __user * ubuf,size_t count,loff_t * ppos)179 mwifiex_info_read(struct file *file, char __user *ubuf,
180 size_t count, loff_t *ppos)
181 {
182 struct mwifiex_private *priv =
183 (struct mwifiex_private *) file->private_data;
184 struct net_device *netdev = priv->netdev;
185 struct netdev_hw_addr *ha;
186 struct netdev_queue *txq;
187 unsigned long page = get_zeroed_page(GFP_KERNEL);
188 char *p = (char *) page, fmt[64];
189 struct mwifiex_bss_info info;
190 ssize_t ret;
191 int i = 0;
192
193 if (!p)
194 return -ENOMEM;
195
196 memset(&info, 0, sizeof(info));
197 ret = mwifiex_get_bss_info(priv, &info);
198 if (ret)
199 goto free_and_exit;
200
201 mwifiex_drv_get_driver_version(priv->adapter, fmt, sizeof(fmt) - 1);
202
203 if (!priv->version_str[0])
204 mwifiex_get_ver_ext(priv);
205
206 p += sprintf(p, "driver_name = " "\"mwifiex\"\n");
207 p += sprintf(p, "driver_version = %s", fmt);
208 p += sprintf(p, "\nverext = %s", priv->version_str);
209 p += sprintf(p, "\ninterface_name=\"%s\"\n", netdev->name);
210
211 if (info.bss_mode >= ARRAY_SIZE(bss_modes))
212 p += sprintf(p, "bss_mode=\"%d\"\n", info.bss_mode);
213 else
214 p += sprintf(p, "bss_mode=\"%s\"\n", bss_modes[info.bss_mode]);
215
216 p += sprintf(p, "media_state=\"%s\"\n",
217 (!priv->media_connected ? "Disconnected" : "Connected"));
218 p += sprintf(p, "mac_address=\"%pM\"\n", netdev->dev_addr);
219
220 if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA) {
221 p += sprintf(p, "multicast_count=\"%d\"\n",
222 netdev_mc_count(netdev));
223 p += sprintf(p, "essid=\"%s\"\n", info.ssid.ssid);
224 p += sprintf(p, "bssid=\"%pM\"\n", info.bssid);
225 p += sprintf(p, "channel=\"%d\"\n", (int) info.bss_chan);
226 p += sprintf(p, "country_code = \"%s\"\n", info.country_code);
227
228 netdev_for_each_mc_addr(ha, netdev)
229 p += sprintf(p, "multicast_address[%d]=\"%pM\"\n",
230 i++, ha->addr);
231 }
232
233 p += sprintf(p, "num_tx_bytes = %lu\n", priv->stats.tx_bytes);
234 p += sprintf(p, "num_rx_bytes = %lu\n", priv->stats.rx_bytes);
235 p += sprintf(p, "num_tx_pkts = %lu\n", priv->stats.tx_packets);
236 p += sprintf(p, "num_rx_pkts = %lu\n", priv->stats.rx_packets);
237 p += sprintf(p, "num_tx_pkts_dropped = %lu\n", priv->stats.tx_dropped);
238 p += sprintf(p, "num_rx_pkts_dropped = %lu\n", priv->stats.rx_dropped);
239 p += sprintf(p, "num_tx_pkts_err = %lu\n", priv->stats.tx_errors);
240 p += sprintf(p, "num_rx_pkts_err = %lu\n", priv->stats.rx_errors);
241 p += sprintf(p, "carrier %s\n", ((netif_carrier_ok(priv->netdev))
242 ? "on" : "off"));
243 p += sprintf(p, "tx queue");
244 for (i = 0; i < netdev->num_tx_queues; i++) {
245 txq = netdev_get_tx_queue(netdev, i);
246 p += sprintf(p, " %d:%s", i, netif_tx_queue_stopped(txq) ?
247 "stopped" : "started");
248 }
249 p += sprintf(p, "\n");
250
251 ret = simple_read_from_buffer(ubuf, count, ppos, (char *) page,
252 (unsigned long) p - page);
253
254 free_and_exit:
255 free_page(page);
256 return ret;
257 }
258
259 /*
260 * Proc getlog file read handler.
261 *
262 * This function is called when the 'getlog' file is opened for reading
263 * It prints the following log information -
264 * - Number of multicast Tx frames
265 * - Number of failed packets
266 * - Number of Tx retries
267 * - Number of multicast Tx retries
268 * - Number of duplicate frames
269 * - Number of RTS successes
270 * - Number of RTS failures
271 * - Number of ACK failures
272 * - Number of fragmented Rx frames
273 * - Number of multicast Rx frames
274 * - Number of FCS errors
275 * - Number of Tx frames
276 * - WEP ICV error counts
277 */
278 static ssize_t
mwifiex_getlog_read(struct file * file,char __user * ubuf,size_t count,loff_t * ppos)279 mwifiex_getlog_read(struct file *file, char __user *ubuf,
280 size_t count, loff_t *ppos)
281 {
282 struct mwifiex_private *priv =
283 (struct mwifiex_private *) file->private_data;
284 unsigned long page = get_zeroed_page(GFP_KERNEL);
285 char *p = (char *) page;
286 ssize_t ret;
287 struct mwifiex_ds_get_stats stats;
288
289 if (!p)
290 return -ENOMEM;
291
292 memset(&stats, 0, sizeof(stats));
293 ret = mwifiex_get_stats_info(priv, &stats);
294 if (ret)
295 goto free_and_exit;
296
297 p += sprintf(p, "\n"
298 "mcasttxframe %u\n"
299 "failed %u\n"
300 "retry %u\n"
301 "multiretry %u\n"
302 "framedup %u\n"
303 "rtssuccess %u\n"
304 "rtsfailure %u\n"
305 "ackfailure %u\n"
306 "rxfrag %u\n"
307 "mcastrxframe %u\n"
308 "fcserror %u\n"
309 "txframe %u\n"
310 "wepicverrcnt-1 %u\n"
311 "wepicverrcnt-2 %u\n"
312 "wepicverrcnt-3 %u\n"
313 "wepicverrcnt-4 %u\n",
314 stats.mcast_tx_frame,
315 stats.failed,
316 stats.retry,
317 stats.multi_retry,
318 stats.frame_dup,
319 stats.rts_success,
320 stats.rts_failure,
321 stats.ack_failure,
322 stats.rx_frag,
323 stats.mcast_rx_frame,
324 stats.fcs_error,
325 stats.tx_frame,
326 stats.wep_icv_error[0],
327 stats.wep_icv_error[1],
328 stats.wep_icv_error[2],
329 stats.wep_icv_error[3]);
330
331
332 ret = simple_read_from_buffer(ubuf, count, ppos, (char *) page,
333 (unsigned long) p - page);
334
335 free_and_exit:
336 free_page(page);
337 return ret;
338 }
339
340 static struct mwifiex_debug_info info;
341
342 /*
343 * Proc debug file read handler.
344 *
345 * This function is called when the 'debug' file is opened for reading
346 * It prints the following log information -
347 * - Interrupt count
348 * - WMM AC VO packets count
349 * - WMM AC VI packets count
350 * - WMM AC BE packets count
351 * - WMM AC BK packets count
352 * - Maximum Tx buffer size
353 * - Tx buffer size
354 * - Current Tx buffer size
355 * - Power Save mode
356 * - Power Save state
357 * - Deep Sleep status
358 * - Device wakeup required status
359 * - Number of wakeup tries
360 * - Host Sleep configured status
361 * - Host Sleep activated status
362 * - Number of Tx timeouts
363 * - Number of command timeouts
364 * - Last timed out command ID
365 * - Last timed out command action
366 * - Last command ID
367 * - Last command action
368 * - Last command index
369 * - Last command response ID
370 * - Last command response index
371 * - Last event
372 * - Last event index
373 * - Number of host to card command failures
374 * - Number of sleep confirm command failures
375 * - Number of host to card data failure
376 * - Number of deauthentication events
377 * - Number of disassociation events
378 * - Number of link lost events
379 * - Number of deauthentication commands
380 * - Number of association success commands
381 * - Number of association failure commands
382 * - Number of commands sent
383 * - Number of data packets sent
384 * - Number of command responses received
385 * - Number of events received
386 * - Tx BA stream table (TID, RA)
387 * - Rx reorder table (TID, TA, Start window, Window size, Buffer)
388 */
389 static ssize_t
mwifiex_debug_read(struct file * file,char __user * ubuf,size_t count,loff_t * ppos)390 mwifiex_debug_read(struct file *file, char __user *ubuf,
391 size_t count, loff_t *ppos)
392 {
393 struct mwifiex_private *priv =
394 (struct mwifiex_private *) file->private_data;
395 struct mwifiex_debug_data *d = &items[0];
396 unsigned long page = get_zeroed_page(GFP_KERNEL);
397 char *p = (char *) page;
398 ssize_t ret;
399 size_t size, addr;
400 long val;
401 int i, j;
402
403 if (!p)
404 return -ENOMEM;
405
406 ret = mwifiex_get_debug_info(priv, &info);
407 if (ret)
408 goto free_and_exit;
409
410 for (i = 0; i < num_of_items; i++) {
411 p += sprintf(p, "%s=", d[i].name);
412
413 size = d[i].size / d[i].num;
414
415 if (i < (num_of_items - 3))
416 addr = d[i].addr + (size_t) &info;
417 else /* The last 3 items are struct mwifiex_adapter variables */
418 addr = d[i].addr + (size_t) priv->adapter;
419
420 for (j = 0; j < d[i].num; j++) {
421 switch (size) {
422 case 1:
423 val = *((u8 *) addr);
424 break;
425 case 2:
426 val = *((u16 *) addr);
427 break;
428 case 4:
429 val = *((u32 *) addr);
430 break;
431 case 8:
432 val = *((long long *) addr);
433 break;
434 default:
435 val = -1;
436 break;
437 }
438
439 p += sprintf(p, "%#lx ", val);
440 addr += size;
441 }
442
443 p += sprintf(p, "\n");
444 }
445
446 if (info.tx_tbl_num) {
447 p += sprintf(p, "Tx BA stream table:\n");
448 for (i = 0; i < info.tx_tbl_num; i++)
449 p += sprintf(p, "tid = %d, ra = %pM\n",
450 info.tx_tbl[i].tid, info.tx_tbl[i].ra);
451 }
452
453 if (info.rx_tbl_num) {
454 p += sprintf(p, "Rx reorder table:\n");
455 for (i = 0; i < info.rx_tbl_num; i++) {
456 p += sprintf(p, "tid = %d, ta = %pM, "
457 "start_win = %d, "
458 "win_size = %d, buffer: ",
459 info.rx_tbl[i].tid,
460 info.rx_tbl[i].ta,
461 info.rx_tbl[i].start_win,
462 info.rx_tbl[i].win_size);
463
464 for (j = 0; j < info.rx_tbl[i].win_size; j++)
465 p += sprintf(p, "%c ",
466 info.rx_tbl[i].buffer[j] ?
467 '1' : '0');
468
469 p += sprintf(p, "\n");
470 }
471 }
472
473 ret = simple_read_from_buffer(ubuf, count, ppos, (char *) page,
474 (unsigned long) p - page);
475
476 free_and_exit:
477 free_page(page);
478 return ret;
479 }
480
481 static u32 saved_reg_type, saved_reg_offset, saved_reg_value;
482
483 /*
484 * Proc regrdwr file write handler.
485 *
486 * This function is called when the 'regrdwr' file is opened for writing
487 *
488 * This function can be used to write to a register.
489 */
490 static ssize_t
mwifiex_regrdwr_write(struct file * file,const char __user * ubuf,size_t count,loff_t * ppos)491 mwifiex_regrdwr_write(struct file *file,
492 const char __user *ubuf, size_t count, loff_t *ppos)
493 {
494 unsigned long addr = get_zeroed_page(GFP_KERNEL);
495 char *buf = (char *) addr;
496 size_t buf_size = min(count, (size_t) (PAGE_SIZE - 1));
497 int ret;
498 u32 reg_type = 0, reg_offset = 0, reg_value = UINT_MAX;
499
500 if (!buf)
501 return -ENOMEM;
502
503
504 if (copy_from_user(buf, ubuf, buf_size)) {
505 ret = -EFAULT;
506 goto done;
507 }
508
509 sscanf(buf, "%u %x %x", ®_type, ®_offset, ®_value);
510
511 if (reg_type == 0 || reg_offset == 0) {
512 ret = -EINVAL;
513 goto done;
514 } else {
515 saved_reg_type = reg_type;
516 saved_reg_offset = reg_offset;
517 saved_reg_value = reg_value;
518 ret = count;
519 }
520 done:
521 free_page(addr);
522 return ret;
523 }
524
525 /*
526 * Proc regrdwr file read handler.
527 *
528 * This function is called when the 'regrdwr' file is opened for reading
529 *
530 * This function can be used to read from a register.
531 */
532 static ssize_t
mwifiex_regrdwr_read(struct file * file,char __user * ubuf,size_t count,loff_t * ppos)533 mwifiex_regrdwr_read(struct file *file, char __user *ubuf,
534 size_t count, loff_t *ppos)
535 {
536 struct mwifiex_private *priv =
537 (struct mwifiex_private *) file->private_data;
538 unsigned long addr = get_zeroed_page(GFP_KERNEL);
539 char *buf = (char *) addr;
540 int pos = 0, ret = 0;
541 u32 reg_value;
542
543 if (!buf)
544 return -ENOMEM;
545
546 if (!saved_reg_type) {
547 /* No command has been given */
548 pos += snprintf(buf, PAGE_SIZE, "0");
549 goto done;
550 }
551 /* Set command has been given */
552 if (saved_reg_value != UINT_MAX) {
553 ret = mwifiex_reg_write(priv, saved_reg_type, saved_reg_offset,
554 saved_reg_value);
555
556 pos += snprintf(buf, PAGE_SIZE, "%u 0x%x 0x%x\n",
557 saved_reg_type, saved_reg_offset,
558 saved_reg_value);
559
560 ret = simple_read_from_buffer(ubuf, count, ppos, buf, pos);
561
562 goto done;
563 }
564 /* Get command has been given */
565 ret = mwifiex_reg_read(priv, saved_reg_type,
566 saved_reg_offset, ®_value);
567 if (ret) {
568 ret = -EINVAL;
569 goto done;
570 }
571
572 pos += snprintf(buf, PAGE_SIZE, "%u 0x%x 0x%x\n", saved_reg_type,
573 saved_reg_offset, reg_value);
574
575 ret = simple_read_from_buffer(ubuf, count, ppos, buf, pos);
576
577 done:
578 free_page(addr);
579 return ret;
580 }
581
582 static u32 saved_offset = -1, saved_bytes = -1;
583
584 /*
585 * Proc rdeeprom file write handler.
586 *
587 * This function is called when the 'rdeeprom' file is opened for writing
588 *
589 * This function can be used to write to a RDEEPROM location.
590 */
591 static ssize_t
mwifiex_rdeeprom_write(struct file * file,const char __user * ubuf,size_t count,loff_t * ppos)592 mwifiex_rdeeprom_write(struct file *file,
593 const char __user *ubuf, size_t count, loff_t *ppos)
594 {
595 unsigned long addr = get_zeroed_page(GFP_KERNEL);
596 char *buf = (char *) addr;
597 size_t buf_size = min(count, (size_t) (PAGE_SIZE - 1));
598 int ret = 0;
599 int offset = -1, bytes = -1;
600
601 if (!buf)
602 return -ENOMEM;
603
604
605 if (copy_from_user(buf, ubuf, buf_size)) {
606 ret = -EFAULT;
607 goto done;
608 }
609
610 sscanf(buf, "%d %d", &offset, &bytes);
611
612 if (offset == -1 || bytes == -1) {
613 ret = -EINVAL;
614 goto done;
615 } else {
616 saved_offset = offset;
617 saved_bytes = bytes;
618 ret = count;
619 }
620 done:
621 free_page(addr);
622 return ret;
623 }
624
625 /*
626 * Proc rdeeprom read write handler.
627 *
628 * This function is called when the 'rdeeprom' file is opened for reading
629 *
630 * This function can be used to read from a RDEEPROM location.
631 */
632 static ssize_t
mwifiex_rdeeprom_read(struct file * file,char __user * ubuf,size_t count,loff_t * ppos)633 mwifiex_rdeeprom_read(struct file *file, char __user *ubuf,
634 size_t count, loff_t *ppos)
635 {
636 struct mwifiex_private *priv =
637 (struct mwifiex_private *) file->private_data;
638 unsigned long addr = get_zeroed_page(GFP_KERNEL);
639 char *buf = (char *) addr;
640 int pos = 0, ret = 0, i;
641 u8 value[MAX_EEPROM_DATA];
642
643 if (!buf)
644 return -ENOMEM;
645
646 if (saved_offset == -1) {
647 /* No command has been given */
648 pos += snprintf(buf, PAGE_SIZE, "0");
649 goto done;
650 }
651
652 /* Get command has been given */
653 ret = mwifiex_eeprom_read(priv, (u16) saved_offset,
654 (u16) saved_bytes, value);
655 if (ret) {
656 ret = -EINVAL;
657 goto done;
658 }
659
660 pos += snprintf(buf, PAGE_SIZE, "%d %d ", saved_offset, saved_bytes);
661
662 for (i = 0; i < saved_bytes; i++)
663 pos += snprintf(buf + strlen(buf), PAGE_SIZE, "%d ", value[i]);
664
665 ret = simple_read_from_buffer(ubuf, count, ppos, buf, pos);
666
667 done:
668 free_page(addr);
669 return ret;
670 }
671
672
673 #define MWIFIEX_DFS_ADD_FILE(name) do { \
674 if (!debugfs_create_file(#name, 0644, priv->dfs_dev_dir, \
675 priv, &mwifiex_dfs_##name##_fops)) \
676 return; \
677 } while (0);
678
679 #define MWIFIEX_DFS_FILE_OPS(name) \
680 static const struct file_operations mwifiex_dfs_##name##_fops = { \
681 .read = mwifiex_##name##_read, \
682 .write = mwifiex_##name##_write, \
683 .open = simple_open, \
684 };
685
686 #define MWIFIEX_DFS_FILE_READ_OPS(name) \
687 static const struct file_operations mwifiex_dfs_##name##_fops = { \
688 .read = mwifiex_##name##_read, \
689 .open = simple_open, \
690 };
691
692 #define MWIFIEX_DFS_FILE_WRITE_OPS(name) \
693 static const struct file_operations mwifiex_dfs_##name##_fops = { \
694 .write = mwifiex_##name##_write, \
695 .open = simple_open, \
696 };
697
698
699 MWIFIEX_DFS_FILE_READ_OPS(info);
700 MWIFIEX_DFS_FILE_READ_OPS(debug);
701 MWIFIEX_DFS_FILE_READ_OPS(getlog);
702 MWIFIEX_DFS_FILE_OPS(regrdwr);
703 MWIFIEX_DFS_FILE_OPS(rdeeprom);
704
705 /*
706 * This function creates the debug FS directory structure and the files.
707 */
708 void
mwifiex_dev_debugfs_init(struct mwifiex_private * priv)709 mwifiex_dev_debugfs_init(struct mwifiex_private *priv)
710 {
711 if (!mwifiex_dfs_dir || !priv)
712 return;
713
714 priv->dfs_dev_dir = debugfs_create_dir(priv->netdev->name,
715 mwifiex_dfs_dir);
716
717 if (!priv->dfs_dev_dir)
718 return;
719
720 MWIFIEX_DFS_ADD_FILE(info);
721 MWIFIEX_DFS_ADD_FILE(debug);
722 MWIFIEX_DFS_ADD_FILE(getlog);
723 MWIFIEX_DFS_ADD_FILE(regrdwr);
724 MWIFIEX_DFS_ADD_FILE(rdeeprom);
725 }
726
727 /*
728 * This function removes the debug FS directory structure and the files.
729 */
730 void
mwifiex_dev_debugfs_remove(struct mwifiex_private * priv)731 mwifiex_dev_debugfs_remove(struct mwifiex_private *priv)
732 {
733 if (!priv)
734 return;
735
736 debugfs_remove_recursive(priv->dfs_dev_dir);
737 }
738
739 /*
740 * This function creates the top level proc directory.
741 */
742 void
mwifiex_debugfs_init(void)743 mwifiex_debugfs_init(void)
744 {
745 if (!mwifiex_dfs_dir)
746 mwifiex_dfs_dir = debugfs_create_dir("mwifiex", NULL);
747 }
748
749 /*
750 * This function removes the top level proc directory.
751 */
752 void
mwifiex_debugfs_remove(void)753 mwifiex_debugfs_remove(void)
754 {
755 if (mwifiex_dfs_dir)
756 debugfs_remove(mwifiex_dfs_dir);
757 }
758