drivers/net/wireless/libertas/debugfs.c

   1 #include <linux/module.h>
   2 #include <linux/dcache.h>
   3 #include <linux/debugfs.h>
   4 #include <linux/delay.h>
   5 #include <linux/mm.h>
   6 #include <net/iw_handler.h>
   7 #include "dev.h"
   8 #include "decl.h"
   9 #include "host.h"
  10
  11 static struct dentry *libertas_dir = NULL;
  12 static char *szStates[] = {
  13         "Connected",
  14         "Disconnected"
  15 };
  16
  17 void libertas_debug_init(wlan_private * priv, struct net_device *dev);
  18
  19 static int open_file_generic(struct inode *inode, struct file *file)
  20 {
  21         file->private_data = inode->i_private;
  22         return 0;
  23 }
  24
  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
  33 static ssize_t libertas_dev_info(struct file *file, char __user *userbuf,
  34                                   size_t count, loff_t *ppos)
  35 {
  36         wlan_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
  42         pos += snprintf(buf+pos, len-pos, "state = %s\n",
  43                                 szStates[priv->adapter->connect_status]);
  44         pos += snprintf(buf+pos, len-pos, "region_code = %02x\n",
  45                                 (u32) priv->adapter->regioncode);
  46
  47         res = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
  48
  49         free_page(addr);
  50         return res;
  51 }
  52
  53
  54 static ssize_t libertas_getscantable(struct file *file, char __user *userbuf,
  55                                   size_t count, loff_t *ppos)
  56 {
  57         wlan_private *priv = file->private_data;
  58         size_t pos = 0;
  59         int numscansdone = 0, res;
  60         unsigned long addr = get_zeroed_page(GFP_KERNEL);
  61         char *buf = (char *)addr;
  62
  63         pos += snprintf(buf+pos, len-pos,
  64                         "---------------------------------------");
  65         pos += snprintf(buf+pos, len-pos,
  66                         "---------------------------------------\n");
  67         pos += snprintf(buf+pos, len-pos,
  68                 "# | ch  | ss  |       bssid       |   cap    |    TSF   | Qual | SSID \n");
  69         pos += snprintf(buf+pos, len-pos,
  70                 "---------------------------------------");
  71         pos += snprintf(buf+pos, len-pos,
  72                 "---------------------------------------\n");
  73
  74         while (numscansdone < priv->adapter->numinscantable) {
  75                 struct bss_descriptor *pbssinfo;
  76                 u16 cap;
  77
  78                 pbssinfo = &priv->adapter->scantable[numscansdone];
  79                 memcpy(&cap, &pbssinfo->cap, sizeof(cap));
  80                 pos += snprintf(buf+pos, len-pos,
  81                         "%02u| %03d | %03ld | %02x:%02x:%02x:%02x:%02x:%02x |",
  82                         numscansdone, pbssinfo->channel, pbssinfo->rssi,
  83                         pbssinfo->macaddress[0], pbssinfo->macaddress[1],
  84                         pbssinfo->macaddress[2], pbssinfo->macaddress[3],
  85                         pbssinfo->macaddress[4], pbssinfo->macaddress[5]);
  86                 pos += snprintf(buf+pos, len-pos, " %04x-", cap);
  87                 pos += snprintf(buf+pos, len-pos, "%c%c%c |",
  88                                 pbssinfo->cap.ibss ? 'A' : 'I',
  89                                 pbssinfo->cap.privacy ? 'P' : ' ',
  90                                 pbssinfo->cap.spectrummgmt ? 'S' : ' ');
  91                 pos += snprintf(buf+pos, len-pos, " %08llx |", pbssinfo->networktsf);
  92                 pos += snprintf(buf+pos, len-pos, " %d |",
  93                         SCAN_RSSI(priv->adapter->scantable[numscansdone].rssi));
  94
  95                 pos += snprintf(buf+pos, len-pos, " %s\n", pbssinfo->ssid.ssid);
  96
  97                 numscansdone++;
  98         }
  99
 100         res = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
 101
 102         free_page(addr);
 103         return res;
 104 }
 105
 106 static ssize_t libertas_sleepparams_write(struct file *file,
 107                                 const char __user *user_buf, size_t count,
 108                                 loff_t *ppos)
 109 {
 110         wlan_private *priv = file->private_data;
 111         ssize_t buf_size, res;
 112         int p1, p2, p3, p4, p5, p6;
 113         struct sleep_params sp;
 114         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 115         char *buf = (char *)addr;
 116
 117         buf_size = min(count, len - 1);
 118         if (copy_from_user(buf, user_buf, buf_size)) {
 119                 res = -EFAULT;
 120                 goto out_unlock;
 121         }
 122         res = sscanf(buf, "%d %d %d %d %d %d", &p1, &p2, &p3, &p4, &p5, &p6);
 123         if (res != 6) {
 124                 res = -EFAULT;
 125                 goto out_unlock;
 126         }
 127         sp.sp_error = p1;
 128         sp.sp_offset = p2;
 129         sp.sp_stabletime = p3;
 130         sp.sp_calcontrol = p4;
 131         sp.sp_extsleepclk = p5;
 132         sp.sp_reserved = p6;
 133
 134         memcpy(&priv->adapter->sp, &sp, sizeof(struct sleep_params));
 135
 136         res = libertas_prepare_and_send_command(priv,
 137                                 cmd_802_11_sleep_params,
 138                                 cmd_act_set,
 139                                 cmd_option_waitforrsp, 0, NULL);
 140
 141         if (!res)
 142                 res = count;
 143         else
 144                 res = -EINVAL;
 145
 146 out_unlock:
 147         free_page(addr);
 148         return res;
 149 }
 150
 151 static ssize_t libertas_sleepparams_read(struct file *file, char __user *userbuf,
 152                                   size_t count, loff_t *ppos)
 153 {
 154         wlan_private *priv = file->private_data;
 155         wlan_adapter *adapter = priv->adapter;
 156         ssize_t res;
 157         size_t pos = 0;
 158         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 159         char *buf = (char *)addr;
 160
 161         res = libertas_prepare_and_send_command(priv,
 162                                 cmd_802_11_sleep_params,
 163                                 cmd_act_get,
 164                                 cmd_option_waitforrsp, 0, NULL);
 165         if (res) {
 166                 res = -EFAULT;
 167                 goto out_unlock;
 168         }
 169
 170         pos += snprintf(buf, len, "%d %d %d %d %d %d\n", adapter->sp.sp_error,
 171                         adapter->sp.sp_offset, adapter->sp.sp_stabletime,
 172                         adapter->sp.sp_calcontrol, adapter->sp.sp_extsleepclk,
 173                         adapter->sp.sp_reserved);
 174
 175         res = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
 176
 177 out_unlock:
 178         free_page(addr);
 179         return res;
 180 }
 181
 182 static ssize_t libertas_extscan(struct file *file, const char __user *userbuf,
 183                                   size_t count, loff_t *ppos)
 184 {
 185         wlan_private *priv = file->private_data;
 186         ssize_t res, buf_size;
 187         struct WLAN_802_11_SSID extscan_ssid;
 188         union iwreq_data wrqu;
 189         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 190         char *buf = (char *)addr;
 191
 192         buf_size = min(count, len - 1);
 193         if (copy_from_user(buf, userbuf, buf_size)) {
 194                 res = -EFAULT;
 195                 goto out_unlock;
 196         }
 197
 198         memcpy(&extscan_ssid.ssid, buf, strlen(buf)-1);
 199         extscan_ssid.ssidlength = strlen(buf)-1;
 200
 201         libertas_send_specific_SSID_scan(priv, &extscan_ssid, 1);
 202
 203         memset(&wrqu, 0, sizeof(union iwreq_data));
 204         wireless_send_event(priv->wlan_dev.netdev, SIOCGIWSCAN, &wrqu, NULL);
 205
 206 out_unlock:
 207         free_page(addr);
 208         return count;
 209 }
 210
 211 static int libertas_parse_chan(char *buf, size_t count,
 212                         struct wlan_ioctl_user_scan_cfg *scan_cfg, int dur)
 213 {
 214         char *start, *end, *hold, *str;
 215         int i = 0;
 216
 217         start = strstr(buf, "chan=");
 218         if (!start)
 219                 return -EINVAL;
 220         start += 5;
 221         end = strstr(start, " ");
 222         if (!end)
 223                 end = buf + count;
 224         hold = kzalloc((end - start)+1, GFP_KERNEL);
 225         if (!hold)
 226                 return -ENOMEM;
 227         strncpy(hold, start, end - start);
 228         hold[(end-start)+1] = '\0';
 229         while(hold && (str = strsep(&hold, ","))) {
 230                 int chan;
 231                 char band, passive = 0;
 232                 sscanf(str, "%d%c%c", &chan, &band, &passive);
 233                 scan_cfg->chanlist[i].channumber = chan;
 234                 scan_cfg->chanlist[i].scantype = passive ? 1 : 0;
 235                 if (band == 'b' || band == 'g')
 236                         scan_cfg->chanlist[i].radiotype = 0;
 237                 else if (band == 'a')
 238                         scan_cfg->chanlist[i].radiotype = 1;
 239
 240                 scan_cfg->chanlist[i].scantime = dur;
 241                 i++;
 242         }
 243
 244         kfree(hold);
 245         return i;
 246 }
 247
 248 static void libertas_parse_bssid(char *buf, size_t count,
 249                         struct wlan_ioctl_user_scan_cfg *scan_cfg)
 250 {
 251         char *hold;
 252         unsigned int mac[ETH_ALEN];
 253         int i;
 254
 255         hold = strstr(buf, "bssid=");
 256         if (!hold)
 257                 return;
 258         hold += 6;
 259         sscanf(hold, "%2x:%2x:%2x:%2x:%2x:%2x", mac, mac+1, mac+2, mac+3,
 260                         mac+4, mac+5);
 261         for(i=0;i<ETH_ALEN;i++)
 262                 scan_cfg->specificBSSID[i] = mac[i];
 263 }
 264
 265 static void libertas_parse_ssid(char *buf, size_t count,
 266                         struct wlan_ioctl_user_scan_cfg *scan_cfg)
 267 {
 268         char *hold, *end;
 269         ssize_t size;
 270
 271         hold = strstr(buf, "ssid=");
 272         if (!hold)
 273                 return;
 274         hold += 5;
 275         end = strstr(hold, " ");
 276         if (!end)
 277                 end = buf + count - 1;
 278
 279         size = min(IW_ESSID_MAX_SIZE, end - hold);
 280         strncpy(scan_cfg->specificSSID, hold, size);
 281
 282         return;
 283 }
 284
 285 static void libertas_parse_keep(char *buf, size_t count,
 286                         struct wlan_ioctl_user_scan_cfg *scan_cfg)
 287 {
 288         char *hold;
 289         int val;
 290
 291         hold = strstr(buf, "keep=");
 292         if (!hold)
 293                 return;
 294         hold += 5;
 295         sscanf(hold, "%d", &val);
 296
 297         if (val != 0)
 298                 val = 1;
 299
 300         scan_cfg->keeppreviousscan = val;
 301         return;
 302 }
 303
 304 static int libertas_parse_dur(char *buf, size_t count,
 305                         struct wlan_ioctl_user_scan_cfg *scan_cfg)
 306 {
 307         char *hold;
 308         int val;
 309
 310         hold = strstr(buf, "dur=");
 311         if (!hold)
 312                 return 0;
 313         hold += 4;
 314         sscanf(hold, "%d", &val);
 315
 316         return val;
 317 }
 318
 319 static void libertas_parse_probes(char *buf, size_t count,
 320                         struct wlan_ioctl_user_scan_cfg *scan_cfg)
 321 {
 322         char *hold;
 323         int val;
 324
 325         hold = strstr(buf, "probes=");
 326         if (!hold)
 327                 return;
 328         hold += 7;
 329         sscanf(hold, "%d", &val);
 330
 331         scan_cfg->numprobes = val;
 332
 333         return;
 334 }
 335
 336 static void libertas_parse_type(char *buf, size_t count,
 337                         struct wlan_ioctl_user_scan_cfg *scan_cfg)
 338 {
 339         char *hold;
 340         int val;
 341
 342         hold = strstr(buf, "type=");
 343         if (!hold)
 344                 return;
 345         hold += 5;
 346         sscanf(hold, "%d", &val);
 347
 348         /* type=1,2 or 3 */
 349         if (val < 1 || val > 3)
 350                 return;
 351
 352         scan_cfg->bsstype = val;
 353
 354         return;
 355 }
 356
 357 static ssize_t libertas_setuserscan(struct file *file,
 358                                     const char __user *userbuf,
 359                                     size_t count, loff_t *ppos)
 360 {
 361         wlan_private *priv = file->private_data;
 362         ssize_t res, buf_size;
 363         struct wlan_ioctl_user_scan_cfg *scan_cfg;
 364         union iwreq_data wrqu;
 365         int dur;
 366         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 367         char *buf = (char *)addr;
 368
 369         scan_cfg = kzalloc(sizeof(struct wlan_ioctl_user_scan_cfg), GFP_KERNEL);
 370         if (!scan_cfg)
 371                 return -ENOMEM;
 372
 373         buf_size = min(count, len - 1);
 374         if (copy_from_user(buf, userbuf, buf_size)) {
 375                 res = -EFAULT;
 376                 goto out_unlock;
 377         }
 378
 379         scan_cfg->bsstype = WLAN_SCAN_BSS_TYPE_ANY;
 380
 381         dur = libertas_parse_dur(buf, count, scan_cfg);
 382         libertas_parse_chan(buf, count, scan_cfg, dur);
 383         libertas_parse_bssid(buf, count, scan_cfg);
 384         libertas_parse_ssid(buf, count, scan_cfg);
 385         libertas_parse_keep(buf, count, scan_cfg);
 386         libertas_parse_probes(buf, count, scan_cfg);
 387         libertas_parse_type(buf, count, scan_cfg);
 388
 389         wlan_scan_networks(priv, scan_cfg);
 390         wait_event_interruptible(priv->adapter->cmd_pending,
 391                                  !priv->adapter->nr_cmd_pending);
 392
 393         memset(&wrqu, 0x00, sizeof(union iwreq_data));
 394         wireless_send_event(priv->wlan_dev.netdev, SIOCGIWSCAN, &wrqu, NULL);
 395
 396 out_unlock:
 397         free_page(addr);
 398         kfree(scan_cfg);
 399         return count;
 400 }
 401
 402 static int libertas_event_initcmd(wlan_private *priv, void **response_buf,
 403                         struct cmd_ctrl_node **cmdnode,
 404                         struct cmd_ds_command **cmd)
 405 {
 406         u16 wait_option = cmd_option_waitforrsp;
 407
 408         if (!(*cmdnode = libertas_get_free_cmd_ctrl_node(priv))) {
 409                 lbs_pr_debug(1, "failed libertas_get_free_cmd_ctrl_node\n");
 410                 return -ENOMEM;
 411         }
 412         if (!(*response_buf = kmalloc(3000, GFP_KERNEL))) {
 413                 lbs_pr_debug(1, "failed to allocate response buffer!\n");
 414                 return -ENOMEM;
 415         }
 416         libertas_set_cmd_ctrl_node(priv, *cmdnode, 0, wait_option, NULL);
 417         init_waitqueue_head(&(*cmdnode)->cmdwait_q);
 418         (*cmdnode)->pdata_buf = *response_buf;
 419         (*cmdnode)->cmdflags |= CMD_F_HOSTCMD;
 420         (*cmdnode)->cmdwaitqwoken = 0;
 421         *cmd = (struct cmd_ds_command *)(*cmdnode)->bufvirtualaddr;
 422         (*cmd)->command = cmd_802_11_subscribe_event;
 423         (*cmd)->seqnum = ++priv->adapter->seqnum;
 424         (*cmd)->result = 0;
 425         return 0;
 426 }
 427
 428 static ssize_t libertas_lowrssi_read(struct file *file, char __user *userbuf,
 429                                   size_t count, loff_t *ppos)
 430 {
 431         wlan_private *priv = file->private_data;
 432         wlan_adapter *adapter = priv->adapter;
 433         struct cmd_ctrl_node *pcmdnode;
 434         struct cmd_ds_command *pcmdptr;
 435         struct cmd_ds_802_11_subscribe_event *event;
 436         void *response_buf;
 437         int res, cmd_len;
 438         ssize_t pos = 0;
 439         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 440         char *buf = (char *)addr;
 441
 442         res = libertas_event_initcmd(priv, &response_buf, &pcmdnode, &pcmdptr);
 443         if (res < 0) {
 444                 free_page(addr);
 445                 return res;
 446         }
 447
 448         event = &pcmdptr->params.subscribe_event;
 449         event->action = cmd_act_get;
 450         pcmdptr->size =
 451         cpu_to_le16(sizeof(struct cmd_ds_802_11_subscribe_event) + S_DS_GEN);
 452         libertas_queue_cmd(adapter, pcmdnode, 1);
 453         wake_up_interruptible(&priv->mainthread.waitq);
 454
 455         /* Sleep until response is generated by FW */
 456         wait_event_interruptible(pcmdnode->cmdwait_q,
 457                                 pcmdnode->cmdwaitqwoken);
 458
 459         pcmdptr = response_buf;
 460         if (pcmdptr->result) {
 461                 lbs_pr_err("%s: fail, result=%d\n", __FUNCTION__,
 462                         pcmdptr->result);
 463                 kfree(response_buf);
 464                 free_page(addr);
 465                 return 0;
 466         }
 467
 468         if (pcmdptr->command != cmd_ret_802_11_subscribe_event) {
 469                 lbs_pr_err("command response incorrect!\n");
 470                 kfree(response_buf);
 471                 free_page(addr);
 472                 return 0;
 473         }
 474
 475         cmd_len = S_DS_GEN + sizeof(struct cmd_ds_802_11_subscribe_event);
 476         event = (struct cmd_ds_802_11_subscribe_event *)(response_buf + S_DS_GEN);
 477         while (cmd_len < pcmdptr->size) {
 478                 struct mrvlietypesheader *header = (struct mrvlietypesheader *)(response_buf + cmd_len);
 479                 switch(header->type) {
 480                 struct mrvlietypes_rssithreshold  *Lowrssi;
 481                 case TLV_TYPE_RSSI_LOW:
 482                 Lowrssi = (struct mrvlietypes_rssithreshold *)(response_buf + cmd_len);
 483                 pos += snprintf(buf+pos, len-pos, "%d %d %d\n",
 484                                 Lowrssi->rssivalue,
 485                                 Lowrssi->rssifreq,
 486                                 (event->events & 0x0001)?1:0);
 487                 default:
 488                         cmd_len += sizeof(struct mrvlietypes_snrthreshold);
 489                         break;
 490                 }
 491         }
 492
 493         kfree(response_buf);
 494         res = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
 495         free_page(addr);
 496         return res;
 497 }
 498
 499 static u16 libertas_get_events_bitmap(wlan_private *priv)
 500 {
 501         wlan_adapter *adapter = priv->adapter;
 502         struct cmd_ctrl_node *pcmdnode;
 503         struct cmd_ds_command *pcmdptr;
 504         struct cmd_ds_802_11_subscribe_event *event;
 505         void *response_buf;
 506         int res;
 507         u16 event_bitmap;
 508
 509         res = libertas_event_initcmd(priv, &response_buf, &pcmdnode, &pcmdptr);
 510         if (res < 0)
 511                 return res;
 512
 513         event = &pcmdptr->params.subscribe_event;
 514         event->action = cmd_act_get;
 515         pcmdptr->size =
 516         cpu_to_le16(sizeof(struct cmd_ds_802_11_subscribe_event) + S_DS_GEN);
 517         libertas_queue_cmd(adapter, pcmdnode, 1);
 518         wake_up_interruptible(&priv->mainthread.waitq);
 519
 520         /* Sleep until response is generated by FW */
 521         wait_event_interruptible(pcmdnode->cmdwait_q,
 522                                 pcmdnode->cmdwaitqwoken);
 523
 524         pcmdptr = response_buf;
 525
 526         if (pcmdptr->result) {
 527                 lbs_pr_err("%s: fail, result=%d\n", __FUNCTION__,
 528                         pcmdptr->result);
 529                 kfree(response_buf);
 530                 return 0;
 531         }
 532
 533         if (pcmdptr->command != cmd_ret_802_11_subscribe_event) {
 534                 lbs_pr_err("command response incorrect!\n");
 535                 kfree(response_buf);
 536                 return 0;
 537         }
 538
 539         event = (struct cmd_ds_802_11_subscribe_event *)(response_buf + S_DS_GEN);
 540         event_bitmap = event->events;
 541         kfree(response_buf);
 542         return event_bitmap;
 543 }
 544
 545 static ssize_t libertas_lowrssi_write(struct file *file,
 546                                     const char __user *userbuf,
 547                                     size_t count, loff_t *ppos)
 548 {
 549         wlan_private *priv = file->private_data;
 550         wlan_adapter *adapter = priv->adapter;
 551         ssize_t res, buf_size;
 552         int value, freq, subscribed, cmd_len;
 553         struct cmd_ctrl_node *pcmdnode;
 554         struct cmd_ds_command *pcmdptr;
 555         struct cmd_ds_802_11_subscribe_event *event;
 556         struct mrvlietypes_rssithreshold *rssi_threshold;
 557         void *response_buf;
 558         u16 event_bitmap;
 559         u8 *ptr;
 560         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 561         char *buf = (char *)addr;
 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         res = sscanf(buf, "%d %d %d", &value, &freq, &subscribed);
 569         if (res != 3) {
 570                 res = -EFAULT;
 571                 goto out_unlock;
 572         }
 573
 574         event_bitmap = libertas_get_events_bitmap(priv);
 575
 576         res = libertas_event_initcmd(priv, &response_buf, &pcmdnode, &pcmdptr);
 577         if (res < 0)
 578                 goto out_unlock;
 579
 580         event = &pcmdptr->params.subscribe_event;
 581         event->action = cmd_act_set;
 582         pcmdptr->size = cpu_to_le16(S_DS_GEN +
 583                 sizeof(struct cmd_ds_802_11_subscribe_event) +
 584                 sizeof(struct mrvlietypes_rssithreshold));
 585
 586         cmd_len = S_DS_GEN + sizeof(struct cmd_ds_802_11_subscribe_event);
 587         ptr = (u8*) pcmdptr+cmd_len;
 588         rssi_threshold = (struct mrvlietypes_rssithreshold *)(ptr);
 589         rssi_threshold->header.type = cpu_to_le16(0x0104);
 590         rssi_threshold->header.len = 2;
 591         rssi_threshold->rssivalue = cpu_to_le16(value);
 592         rssi_threshold->rssifreq = cpu_to_le16(freq);
 593         event_bitmap |= subscribed ? 0x0001 : 0x0;
 594         event->events = event_bitmap;
 595
 596         libertas_queue_cmd(adapter, pcmdnode, 1);
 597         wake_up_interruptible(&priv->mainthread.waitq);
 598
 599         /* Sleep until response is generated by FW */
 600         wait_event_interruptible(pcmdnode->cmdwait_q,
 601                                 pcmdnode->cmdwaitqwoken);
 602
 603         pcmdptr = response_buf;
 604
 605         if (pcmdptr->result) {
 606                 lbs_pr_err("%s: fail, result=%d\n", __FUNCTION__,
 607                         pcmdptr->result);
 608                 kfree(response_buf);
 609                 free_page(addr);
 610                 return 0;
 611         }
 612
 613         if (pcmdptr->command != cmd_ret_802_11_subscribe_event) {
 614                 lbs_pr_err("command response incorrect!\n");
 615                 kfree(response_buf);
 616                 free_page(addr);
 617                 return 0;
 618         }
 619
 620         res = count;
 621 out_unlock:
 622         free_page(addr);
 623         return res;
 624 }
 625
 626 static ssize_t libertas_lowsnr_read(struct file *file, char __user *userbuf,
 627                                   size_t count, loff_t *ppos)
 628 {
 629         wlan_private *priv = file->private_data;
 630         wlan_adapter *adapter = priv->adapter;
 631         struct cmd_ctrl_node *pcmdnode;
 632         struct cmd_ds_command *pcmdptr;
 633         struct cmd_ds_802_11_subscribe_event *event;
 634         void *response_buf;
 635         int res, cmd_len;
 636         ssize_t pos = 0;
 637         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 638         char *buf = (char *)addr;
 639
 640         res = libertas_event_initcmd(priv, &response_buf, &pcmdnode, &pcmdptr);
 641         if (res < 0) {
 642                 free_page(addr);
 643                 return res;
 644         }
 645
 646         event = &pcmdptr->params.subscribe_event;
 647         event->action = cmd_act_get;
 648         pcmdptr->size =
 649         cpu_to_le16(sizeof(struct cmd_ds_802_11_subscribe_event) + S_DS_GEN);
 650         libertas_queue_cmd(adapter, pcmdnode, 1);
 651         wake_up_interruptible(&priv->mainthread.waitq);
 652
 653         /* Sleep until response is generated by FW */
 654         wait_event_interruptible(pcmdnode->cmdwait_q,
 655                                 pcmdnode->cmdwaitqwoken);
 656
 657         pcmdptr = response_buf;
 658
 659         if (pcmdptr->result) {
 660                 lbs_pr_err("%s: fail, result=%d\n", __FUNCTION__,
 661                         pcmdptr->result);
 662                 kfree(response_buf);
 663                 free_page(addr);
 664                 return 0;
 665         }
 666
 667         if (pcmdptr->command != cmd_ret_802_11_subscribe_event) {
 668                 lbs_pr_err("command response incorrect!\n");
 669                 kfree(response_buf);
 670                 free_page(addr);
 671                 return 0;
 672         }
 673
 674         cmd_len = S_DS_GEN + sizeof(struct cmd_ds_802_11_subscribe_event);
 675         event = (struct cmd_ds_802_11_subscribe_event *)(response_buf + S_DS_GEN);
 676         while (cmd_len < pcmdptr->size) {
 677                 struct mrvlietypesheader *header = (struct mrvlietypesheader *)(response_buf + cmd_len);
 678                 switch(header->type) {
 679                 struct mrvlietypes_snrthreshold *LowSnr;
 680                 case TLV_TYPE_SNR_LOW:
 681                 LowSnr = (struct mrvlietypes_snrthreshold *)(response_buf + cmd_len);
 682                 pos += snprintf(buf+pos, len-pos, "%d %d %d\n",
 683                                 LowSnr->snrvalue,
 684                                 LowSnr->snrfreq,
 685                                 (event->events & 0x0002)?1:0);
 686                 default:
 687                         cmd_len += sizeof(struct mrvlietypes_snrthreshold);
 688                         break;
 689                 }
 690         }
 691
 692         kfree(response_buf);
 693
 694         res = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
 695         free_page(addr);
 696         return res;
 697 }
 698
 699 static ssize_t libertas_lowsnr_write(struct file *file,
 700                                     const char __user *userbuf,
 701                                     size_t count, loff_t *ppos)
 702 {
 703         wlan_private *priv = file->private_data;
 704         wlan_adapter *adapter = priv->adapter;
 705         ssize_t res, buf_size;
 706         int value, freq, subscribed, cmd_len;
 707         struct cmd_ctrl_node *pcmdnode;
 708         struct cmd_ds_command *pcmdptr;
 709         struct cmd_ds_802_11_subscribe_event *event;
 710         struct mrvlietypes_snrthreshold *snr_threshold;
 711         void *response_buf;
 712         u16 event_bitmap;
 713         u8 *ptr;
 714         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 715         char *buf = (char *)addr;
 716
 717         buf_size = min(count, len - 1);
 718         if (copy_from_user(buf, userbuf, buf_size)) {
 719                 res = -EFAULT;
 720                 goto out_unlock;
 721         }
 722         res = sscanf(buf, "%d %d %d", &value, &freq, &subscribed);
 723         if (res != 3) {
 724                 res = -EFAULT;
 725                 goto out_unlock;
 726         }
 727
 728         event_bitmap = libertas_get_events_bitmap(priv);
 729
 730         res = libertas_event_initcmd(priv, &response_buf, &pcmdnode, &pcmdptr);
 731         if (res < 0)
 732                 goto out_unlock;
 733
 734         event = &pcmdptr->params.subscribe_event;
 735         event->action = cmd_act_set;
 736         pcmdptr->size = cpu_to_le16(S_DS_GEN +
 737                 sizeof(struct cmd_ds_802_11_subscribe_event) +
 738                 sizeof(struct mrvlietypes_snrthreshold));
 739         cmd_len = S_DS_GEN + sizeof(struct cmd_ds_802_11_subscribe_event);
 740         ptr = (u8*) pcmdptr+cmd_len;
 741         snr_threshold = (struct mrvlietypes_snrthreshold *)(ptr);
 742         snr_threshold->header.type = cpu_to_le16(TLV_TYPE_SNR_LOW);
 743         snr_threshold->header.len = 2;
 744         snr_threshold->snrvalue = cpu_to_le16(value);
 745         snr_threshold->snrfreq = cpu_to_le16(freq);
 746         event_bitmap |= subscribed ? 0x0002 : 0x0;
 747         event->events = event_bitmap;
 748
 749         libertas_queue_cmd(adapter, pcmdnode, 1);
 750         wake_up_interruptible(&priv->mainthread.waitq);
 751
 752         /* Sleep until response is generated by FW */
 753         wait_event_interruptible(pcmdnode->cmdwait_q,
 754                                 pcmdnode->cmdwaitqwoken);
 755
 756         pcmdptr = response_buf;
 757
 758         if (pcmdptr->result) {
 759                 lbs_pr_err("%s: fail, result=%d\n", __FUNCTION__,
 760                         pcmdptr->result);
 761                 kfree(response_buf);
 762                 free_page(addr);
 763                 return 0;
 764         }
 765
 766         if (pcmdptr->command != cmd_ret_802_11_subscribe_event) {
 767                 lbs_pr_err("command response incorrect!\n");
 768                 kfree(response_buf);
 769                 free_page(addr);
 770                 return 0;
 771         }
 772
 773         res = count;
 774
 775 out_unlock:
 776         free_page(addr);
 777         return res;
 778 }
 779
 780 static ssize_t libertas_failcount_read(struct file *file, char __user *userbuf,
 781                                   size_t count, loff_t *ppos)
 782 {
 783         wlan_private *priv = file->private_data;
 784         wlan_adapter *adapter = priv->adapter;
 785         struct cmd_ctrl_node *pcmdnode;
 786         struct cmd_ds_command *pcmdptr;
 787         struct cmd_ds_802_11_subscribe_event *event;
 788         void *response_buf;
 789         int res, cmd_len;
 790         ssize_t pos = 0;
 791         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 792         char *buf = (char *)addr;
 793
 794         res = libertas_event_initcmd(priv, &response_buf, &pcmdnode, &pcmdptr);
 795         if (res < 0) {
 796                 free_page(addr);
 797                 return res;
 798         }
 799
 800         event = &pcmdptr->params.subscribe_event;
 801         event->action = cmd_act_get;
 802         pcmdptr->size =
 803         cpu_to_le16(sizeof(struct cmd_ds_802_11_subscribe_event) + S_DS_GEN);
 804         libertas_queue_cmd(adapter, pcmdnode, 1);
 805         wake_up_interruptible(&priv->mainthread.waitq);
 806
 807         /* Sleep until response is generated by FW */
 808         wait_event_interruptible(pcmdnode->cmdwait_q,
 809                                 pcmdnode->cmdwaitqwoken);
 810
 811         pcmdptr = response_buf;
 812
 813         if (pcmdptr->result) {
 814                 lbs_pr_err("%s: fail, result=%d\n", __FUNCTION__,
 815                         pcmdptr->result);
 816                 kfree(response_buf);
 817                 free_page(addr);
 818                 return 0;
 819         }
 820
 821         if (pcmdptr->command != cmd_ret_802_11_subscribe_event) {
 822                 lbs_pr_err("command response incorrect!\n");
 823                 kfree(response_buf);
 824                 free_page(addr);
 825                 return 0;
 826         }
 827
 828         cmd_len = S_DS_GEN + sizeof(struct cmd_ds_802_11_subscribe_event);
 829         event = (struct cmd_ds_802_11_subscribe_event *)(response_buf + S_DS_GEN);
 830         while (cmd_len < pcmdptr->size) {
 831                 struct mrvlietypesheader *header = (struct mrvlietypesheader *)(response_buf + cmd_len);
 832                 switch(header->type) {
 833                 struct mrvlietypes_failurecount *failcount;
 834                 case TLV_TYPE_FAILCOUNT:
 835                 failcount = (struct mrvlietypes_failurecount *)(response_buf + cmd_len);
 836                 pos += snprintf(buf+pos, len-pos, "%d %d %d\n",
 837                                 failcount->failvalue,
 838                                 failcount->Failfreq,
 839                                 (event->events & 0x0004)?1:0);
 840                 default:
 841                         cmd_len += sizeof(struct mrvlietypes_failurecount);
 842                         break;
 843                 }
 844         }
 845
 846         kfree(response_buf);
 847         res = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
 848         free_page(addr);
 849         return res;
 850 }
 851
 852 static ssize_t libertas_failcount_write(struct file *file,
 853                                     const char __user *userbuf,
 854                                     size_t count, loff_t *ppos)
 855 {
 856         wlan_private *priv = file->private_data;
 857         wlan_adapter *adapter = priv->adapter;
 858         ssize_t res, buf_size;
 859         int value, freq, subscribed, cmd_len;
 860         struct cmd_ctrl_node *pcmdnode;
 861         struct cmd_ds_command *pcmdptr;
 862         struct cmd_ds_802_11_subscribe_event *event;
 863         struct mrvlietypes_failurecount *failcount;
 864         void *response_buf;
 865         u16 event_bitmap;
 866         u8 *ptr;
 867         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 868         char *buf = (char *)addr;
 869
 870         buf_size = min(count, len - 1);
 871         if (copy_from_user(buf, userbuf, buf_size)) {
 872                 res = -EFAULT;
 873                 goto out_unlock;
 874         }
 875         res = sscanf(buf, "%d %d %d", &value, &freq, &subscribed);
 876         if (res != 3) {
 877                 res = -EFAULT;
 878                 goto out_unlock;
 879         }
 880
 881         event_bitmap = libertas_get_events_bitmap(priv);
 882
 883         res = libertas_event_initcmd(priv, &response_buf, &pcmdnode, &pcmdptr);
 884         if (res < 0)
 885                 goto out_unlock;
 886
 887         event = &pcmdptr->params.subscribe_event;
 888         event->action = cmd_act_set;
 889         pcmdptr->size = cpu_to_le16(S_DS_GEN +
 890                 sizeof(struct cmd_ds_802_11_subscribe_event) +
 891                 sizeof(struct mrvlietypes_failurecount));
 892         cmd_len = S_DS_GEN + sizeof(struct cmd_ds_802_11_subscribe_event);
 893         ptr = (u8*) pcmdptr+cmd_len;
 894         failcount = (struct mrvlietypes_failurecount *)(ptr);
 895         failcount->header.type = cpu_to_le16(TLV_TYPE_FAILCOUNT);
 896         failcount->header.len = 2;
 897         failcount->failvalue = cpu_to_le16(value);
 898         failcount->Failfreq = cpu_to_le16(freq);
 899         event_bitmap |= subscribed ? 0x0004 : 0x0;
 900         event->events = event_bitmap;
 901
 902         libertas_queue_cmd(adapter, pcmdnode, 1);
 903         wake_up_interruptible(&priv->mainthread.waitq);
 904
 905         /* Sleep until response is generated by FW */
 906         wait_event_interruptible(pcmdnode->cmdwait_q,
 907                                 pcmdnode->cmdwaitqwoken);
 908
 909         pcmdptr = (struct cmd_ds_command *)response_buf;
 910
 911         if (pcmdptr->result) {
 912                 lbs_pr_err("%s: fail, result=%d\n", __FUNCTION__,
 913                         pcmdptr->result);
 914                 kfree(response_buf);
 915                 free_page(addr);
 916                 return 0;
 917         }
 918
 919         if (pcmdptr->command != cmd_ret_802_11_subscribe_event) {
 920                 lbs_pr_err("command response incorrect!\n");
 921                 kfree(response_buf);
 922                 free_page(addr);
 923                 return 0;
 924         }
 925
 926         res = count;
 927 out_unlock:
 928         free_page(addr);
 929         return res;
 930 }
 931
 932 static ssize_t libertas_bcnmiss_read(struct file *file, char __user *userbuf,
 933                                   size_t count, loff_t *ppos)
 934 {
 935         wlan_private *priv = file->private_data;
 936         wlan_adapter *adapter = priv->adapter;
 937         struct cmd_ctrl_node *pcmdnode;
 938         struct cmd_ds_command *pcmdptr;
 939         struct cmd_ds_802_11_subscribe_event *event;
 940         void *response_buf;
 941         int res, cmd_len;
 942         ssize_t pos = 0;
 943         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 944         char *buf = (char *)addr;
 945
 946         res = libertas_event_initcmd(priv, &response_buf, &pcmdnode, &pcmdptr);
 947         if (res < 0) {
 948                 free_page(addr);
 949                 return res;
 950         }
 951
 952         event = &pcmdptr->params.subscribe_event;
 953         event->action = cmd_act_get;
 954         pcmdptr->size =
 955         cpu_to_le16(sizeof(struct cmd_ds_802_11_subscribe_event) + S_DS_GEN);
 956         libertas_queue_cmd(adapter, pcmdnode, 1);
 957         wake_up_interruptible(&priv->mainthread.waitq);
 958
 959         /* Sleep until response is generated by FW */
 960         wait_event_interruptible(pcmdnode->cmdwait_q,
 961                                 pcmdnode->cmdwaitqwoken);
 962
 963         pcmdptr = response_buf;
 964
 965         if (pcmdptr->result) {
 966                 lbs_pr_err("%s: fail, result=%d\n", __FUNCTION__,
 967                         pcmdptr->result);
 968                 free_page(addr);
 969                 kfree(response_buf);
 970                 return 0;
 971         }
 972
 973         if (pcmdptr->command != cmd_ret_802_11_subscribe_event) {
 974                 lbs_pr_err("command response incorrect!\n");
 975                 free_page(addr);
 976                 kfree(response_buf);
 977                 return 0;
 978         }
 979
 980         cmd_len = S_DS_GEN + sizeof(struct cmd_ds_802_11_subscribe_event);
 981         event = (struct cmd_ds_802_11_subscribe_event *)(response_buf + S_DS_GEN);
 982         while (cmd_len < pcmdptr->size) {
 983                 struct mrvlietypesheader *header = (struct mrvlietypesheader *)(response_buf + cmd_len);
 984                 switch(header->type) {
 985                 struct mrvlietypes_beaconsmissed *bcnmiss;
 986                 case TLV_TYPE_BCNMISS:
 987                 bcnmiss = (struct mrvlietypes_beaconsmissed *)(response_buf + cmd_len);
 988                 pos += snprintf(buf+pos, len-pos, "%d N/A %d\n",
 989                                 bcnmiss->beaconmissed,
 990                                 (event->events & 0x0008)?1:0);
 991                 default:
 992                         cmd_len += sizeof(struct mrvlietypes_beaconsmissed);
 993                         break;
 994                 }
 995         }
 996
 997         kfree(response_buf);
 998
 999         res = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
1000         free_page(addr);
1001         return res;
1002 }
1003
1004 static ssize_t libertas_bcnmiss_write(struct file *file,
1005                                     const char __user *userbuf,
1006                                     size_t count, loff_t *ppos)
1007 {
1008         wlan_private *priv = file->private_data;
1009         wlan_adapter *adapter = priv->adapter;
1010         ssize_t res, buf_size;
1011         int value, freq, subscribed, cmd_len;
1012         struct cmd_ctrl_node *pcmdnode;
1013         struct cmd_ds_command *pcmdptr;
1014         struct cmd_ds_802_11_subscribe_event *event;
1015         struct mrvlietypes_beaconsmissed *bcnmiss;
1016         void *response_buf;
1017         u16 event_bitmap;
1018         u8 *ptr;
1019         unsigned long addr = get_zeroed_page(GFP_KERNEL);
1020         char *buf = (char *)addr;
1021
1022         buf_size = min(count, len - 1);
1023         if (copy_from_user(buf, userbuf, buf_size)) {
1024                 res = -EFAULT;
1025                 goto out_unlock;
1026         }
1027         res = sscanf(buf, "%d %d %d", &value, &freq, &subscribed);
1028         if (res != 3) {
1029                 res = -EFAULT;
1030                 goto out_unlock;
1031         }
1032
1033         event_bitmap = libertas_get_events_bitmap(priv);
1034
1035         res = libertas_event_initcmd(priv, &response_buf, &pcmdnode, &pcmdptr);
1036         if (res < 0)
1037                 goto out_unlock;
1038
1039         event = &pcmdptr->params.subscribe_event;
1040         event->action = cmd_act_set;
1041         pcmdptr->size = cpu_to_le16(S_DS_GEN +
1042                 sizeof(struct cmd_ds_802_11_subscribe_event) +
1043                 sizeof(struct mrvlietypes_beaconsmissed));
1044         cmd_len = S_DS_GEN + sizeof(struct cmd_ds_802_11_subscribe_event);
1045         ptr = (u8*) pcmdptr+cmd_len;
1046         bcnmiss = (struct mrvlietypes_beaconsmissed *)(ptr);
1047         bcnmiss->header.type = cpu_to_le16(TLV_TYPE_BCNMISS);
1048         bcnmiss->header.len = 2;
1049         bcnmiss->beaconmissed = cpu_to_le16(value);
1050         event_bitmap |= subscribed ? 0x0008 : 0x0;
1051         event->events = event_bitmap;
1052
1053         libertas_queue_cmd(adapter, pcmdnode, 1);
1054         wake_up_interruptible(&priv->mainthread.waitq);
1055
1056         /* Sleep until response is generated by FW */
1057         wait_event_interruptible(pcmdnode->cmdwait_q,
1058                                 pcmdnode->cmdwaitqwoken);
1059
1060         pcmdptr = response_buf;
1061
1062         if (pcmdptr->result) {
1063                 lbs_pr_err("%s: fail, result=%d\n", __FUNCTION__,
1064                         pcmdptr->result);
1065                 kfree(response_buf);
1066                 free_page(addr);
1067                 return 0;
1068         }
1069
1070         if (pcmdptr->command != cmd_ret_802_11_subscribe_event) {
1071                 lbs_pr_err("command response incorrect!\n");
1072                 free_page(addr);
1073                 kfree(response_buf);
1074                 return 0;
1075         }
1076
1077         res = count;
1078 out_unlock:
1079         free_page(addr);
1080         return res;
1081 }
1082
1083 static ssize_t libertas_highrssi_read(struct file *file, char __user *userbuf,
1084                                   size_t count, loff_t *ppos)
1085 {
1086         wlan_private *priv = file->private_data;
1087         wlan_adapter *adapter = priv->adapter;
1088         struct cmd_ctrl_node *pcmdnode;
1089         struct cmd_ds_command *pcmdptr;
1090         struct cmd_ds_802_11_subscribe_event *event;
1091         void *response_buf;
1092         int res, cmd_len;
1093         ssize_t pos = 0;
1094         unsigned long addr = get_zeroed_page(GFP_KERNEL);
1095         char *buf = (char *)addr;
1096
1097         res = libertas_event_initcmd(priv, &response_buf, &pcmdnode, &pcmdptr);
1098         if (res < 0) {
1099                 free_page(addr);
1100                 return res;
1101         }
1102
1103         event = &pcmdptr->params.subscribe_event;
1104         event->action = cmd_act_get;
1105         pcmdptr->size =
1106         cpu_to_le16(sizeof(struct cmd_ds_802_11_subscribe_event) + S_DS_GEN);
1107         libertas_queue_cmd(adapter, pcmdnode, 1);
1108         wake_up_interruptible(&priv->mainthread.waitq);
1109
1110         /* Sleep until response is generated by FW */
1111         wait_event_interruptible(pcmdnode->cmdwait_q,
1112                                 pcmdnode->cmdwaitqwoken);
1113
1114         pcmdptr = response_buf;
1115
1116         if (pcmdptr->result) {
1117                 lbs_pr_err("%s: fail, result=%d\n", __FUNCTION__,
1118                         pcmdptr->result);
1119                 kfree(response_buf);
1120                 free_page(addr);
1121                 return 0;
1122         }
1123
1124         if (pcmdptr->command != cmd_ret_802_11_subscribe_event) {
1125                 lbs_pr_err("command response incorrect!\n");
1126                 kfree(response_buf);
1127                 free_page(addr);
1128                 return 0;
1129         }
1130
1131         cmd_len = S_DS_GEN + sizeof(struct cmd_ds_802_11_subscribe_event);
1132         event = (struct cmd_ds_802_11_subscribe_event *)(response_buf + S_DS_GEN);
1133         while (cmd_len < pcmdptr->size) {
1134                 struct mrvlietypesheader *header = (struct mrvlietypesheader *)(response_buf + cmd_len);
1135                 switch(header->type) {
1136                 struct mrvlietypes_rssithreshold  *Highrssi;
1137                 case TLV_TYPE_RSSI_HIGH:
1138                 Highrssi = (struct mrvlietypes_rssithreshold *)(response_buf + cmd_len);
1139                 pos += snprintf(buf+pos, len-pos, "%d %d %d\n",
1140                                 Highrssi->rssivalue,
1141                                 Highrssi->rssifreq,
1142                                 (event->events & 0x0010)?1:0);
1143                 default:
1144                         cmd_len += sizeof(struct mrvlietypes_snrthreshold);
1145                         break;
1146                 }
1147         }
1148
1149         kfree(response_buf);
1150
1151         res = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
1152         free_page(addr);
1153         return res;
1154 }
1155
1156 static ssize_t libertas_highrssi_write(struct file *file,
1157                                     const char __user *userbuf,
1158                                     size_t count, loff_t *ppos)
1159 {
1160         wlan_private *priv = file->private_data;
1161         wlan_adapter *adapter = priv->adapter;
1162         ssize_t res, buf_size;
1163         int value, freq, subscribed, cmd_len;
1164         struct cmd_ctrl_node *pcmdnode;
1165         struct cmd_ds_command *pcmdptr;
1166         struct cmd_ds_802_11_subscribe_event *event;
1167         struct mrvlietypes_rssithreshold *rssi_threshold;
1168         void *response_buf;
1169         u16 event_bitmap;
1170         u8 *ptr;
1171         unsigned long addr = get_zeroed_page(GFP_KERNEL);
1172         char *buf = (char *)addr;
1173
1174         buf_size = min(count, len - 1);
1175         if (copy_from_user(buf, userbuf, buf_size)) {
1176                 res = -EFAULT;
1177                 goto out_unlock;
1178         }
1179         res = sscanf(buf, "%d %d %d", &value, &freq, &subscribed);
1180         if (res != 3) {
1181                 res = -EFAULT;
1182                 goto out_unlock;
1183         }
1184
1185         event_bitmap = libertas_get_events_bitmap(priv);
1186
1187         res = libertas_event_initcmd(priv, &response_buf, &pcmdnode, &pcmdptr);
1188         if (res < 0)
1189                 goto out_unlock;
1190
1191         event = &pcmdptr->params.subscribe_event;
1192         event->action = cmd_act_set;
1193         pcmdptr->size = cpu_to_le16(S_DS_GEN +
1194                 sizeof(struct cmd_ds_802_11_subscribe_event) +
1195                 sizeof(struct mrvlietypes_rssithreshold));
1196         cmd_len = S_DS_GEN + sizeof(struct cmd_ds_802_11_subscribe_event);
1197         ptr = (u8*) pcmdptr+cmd_len;
1198         rssi_threshold = (struct mrvlietypes_rssithreshold *)(ptr);
1199         rssi_threshold->header.type = cpu_to_le16(TLV_TYPE_RSSI_HIGH);
1200         rssi_threshold->header.len = 2;
1201         rssi_threshold->rssivalue = cpu_to_le16(value);
1202         rssi_threshold->rssifreq = cpu_to_le16(freq);
1203         event_bitmap |= subscribed ? 0x0010 : 0x0;
1204         event->events = event_bitmap;
1205
1206         libertas_queue_cmd(adapter, pcmdnode, 1);
1207         wake_up_interruptible(&priv->mainthread.waitq);
1208
1209         /* Sleep until response is generated by FW */
1210         wait_event_interruptible(pcmdnode->cmdwait_q,
1211                                 pcmdnode->cmdwaitqwoken);
1212
1213         pcmdptr = response_buf;
1214
1215         if (pcmdptr->result) {
1216                 lbs_pr_err("%s: fail, result=%d\n", __FUNCTION__,
1217                         pcmdptr->result);
1218                 kfree(response_buf);
1219                 return 0;
1220         }
1221
1222         if (pcmdptr->command != cmd_ret_802_11_subscribe_event) {
1223                 lbs_pr_err("command response incorrect!\n");
1224                 kfree(response_buf);
1225                 return 0;
1226         }
1227
1228         res = count;
1229 out_unlock:
1230         free_page(addr);
1231         return res;
1232 }
1233
1234 static ssize_t libertas_highsnr_read(struct file *file, char __user *userbuf,
1235                                   size_t count, loff_t *ppos)
1236 {
1237         wlan_private *priv = file->private_data;
1238         wlan_adapter *adapter = priv->adapter;
1239         struct cmd_ctrl_node *pcmdnode;
1240         struct cmd_ds_command *pcmdptr;
1241         struct cmd_ds_802_11_subscribe_event *event;
1242         void *response_buf;
1243         int res, cmd_len;
1244         ssize_t pos = 0;
1245         unsigned long addr = get_zeroed_page(GFP_KERNEL);
1246         char *buf = (char *)addr;
1247
1248         res = libertas_event_initcmd(priv, &response_buf, &pcmdnode, &pcmdptr);
1249         if (res < 0) {
1250                 free_page(addr);
1251                 return res;
1252         }
1253
1254         event = &pcmdptr->params.subscribe_event;
1255         event->action = cmd_act_get;
1256         pcmdptr->size =
1257         cpu_to_le16(sizeof(struct cmd_ds_802_11_subscribe_event) + S_DS_GEN);
1258         libertas_queue_cmd(adapter, pcmdnode, 1);
1259         wake_up_interruptible(&priv->mainthread.waitq);
1260
1261         /* Sleep until response is generated by FW */
1262         wait_event_interruptible(pcmdnode->cmdwait_q,
1263                                 pcmdnode->cmdwaitqwoken);
1264
1265         pcmdptr = response_buf;
1266
1267         if (pcmdptr->result) {
1268                 lbs_pr_err("%s: fail, result=%d\n", __FUNCTION__,
1269                         pcmdptr->result);
1270                 kfree(response_buf);
1271                 free_page(addr);
1272                 return 0;
1273         }
1274
1275         if (pcmdptr->command != cmd_ret_802_11_subscribe_event) {
1276                 lbs_pr_err("command response incorrect!\n");
1277                 kfree(response_buf);
1278                 free_page(addr);
1279                 return 0;
1280         }
1281
1282         cmd_len = S_DS_GEN + sizeof(struct cmd_ds_802_11_subscribe_event);
1283         event = (struct cmd_ds_802_11_subscribe_event *)(response_buf + S_DS_GEN);
1284         while (cmd_len < pcmdptr->size) {
1285                 struct mrvlietypesheader *header = (struct mrvlietypesheader *)(response_buf + cmd_len);
1286                 switch(header->type) {
1287                 struct mrvlietypes_snrthreshold *HighSnr;
1288                 case TLV_TYPE_SNR_HIGH:
1289                 HighSnr = (struct mrvlietypes_snrthreshold *)(response_buf + cmd_len);
1290                 pos += snprintf(buf+pos, len-pos, "%d %d %d\n",
1291                                 HighSnr->snrvalue,
1292                                 HighSnr->snrfreq,
1293                                 (event->events & 0x0020)?1:0);
1294                 default:
1295                         cmd_len += sizeof(struct mrvlietypes_snrthreshold);
1296                         break;
1297                 }
1298         }
1299
1300         kfree(response_buf);
1301
1302         res = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
1303         free_page(addr);
1304         return res;
1305 }
1306
1307 static ssize_t libertas_highsnr_write(struct file *file,
1308                                     const char __user *userbuf,
1309                                     size_t count, loff_t *ppos)
1310 {
1311         wlan_private *priv = file->private_data;
1312         wlan_adapter *adapter = priv->adapter;
1313         ssize_t res, buf_size;
1314         int value, freq, subscribed, cmd_len;
1315         struct cmd_ctrl_node *pcmdnode;
1316         struct cmd_ds_command *pcmdptr;
1317         struct cmd_ds_802_11_subscribe_event *event;
1318         struct mrvlietypes_snrthreshold *snr_threshold;
1319         void *response_buf;
1320         u16 event_bitmap;
1321         u8 *ptr;
1322         unsigned long addr = get_zeroed_page(GFP_KERNEL);
1323         char *buf = (char *)addr;
1324
1325         buf_size = min(count, len - 1);
1326         if (copy_from_user(buf, userbuf, buf_size)) {
1327                 res = -EFAULT;
1328                 goto out_unlock;
1329         }
1330         res = sscanf(buf, "%d %d %d", &value, &freq, &subscribed);
1331         if (res != 3) {
1332                 res = -EFAULT;
1333                 goto out_unlock;
1334         }
1335
1336         event_bitmap = libertas_get_events_bitmap(priv);
1337
1338         res = libertas_event_initcmd(priv, &response_buf, &pcmdnode, &pcmdptr);
1339         if (res < 0)
1340                 goto out_unlock;
1341
1342         event = &pcmdptr->params.subscribe_event;
1343         event->action = cmd_act_set;
1344         pcmdptr->size = cpu_to_le16(S_DS_GEN +
1345                 sizeof(struct cmd_ds_802_11_subscribe_event) +
1346                 sizeof(struct mrvlietypes_snrthreshold));
1347         cmd_len = S_DS_GEN + sizeof(struct cmd_ds_802_11_subscribe_event);
1348         ptr = (u8*) pcmdptr+cmd_len;
1349         snr_threshold = (struct mrvlietypes_snrthreshold *)(ptr);
1350         snr_threshold->header.type = cpu_to_le16(TLV_TYPE_SNR_HIGH);
1351         snr_threshold->header.len = 2;
1352         snr_threshold->snrvalue = cpu_to_le16(value);
1353         snr_threshold->snrfreq = cpu_to_le16(freq);
1354         event_bitmap |= subscribed ? 0x0020 : 0x0;
1355         event->events = event_bitmap;
1356
1357         libertas_queue_cmd(adapter, pcmdnode, 1);
1358         wake_up_interruptible(&priv->mainthread.waitq);
1359
1360         /* Sleep until response is generated by FW */
1361         wait_event_interruptible(pcmdnode->cmdwait_q,
1362                                 pcmdnode->cmdwaitqwoken);
1363
1364         pcmdptr = response_buf;
1365
1366         if (pcmdptr->result) {
1367                 lbs_pr_err("%s: fail, result=%d\n", __FUNCTION__,
1368                         pcmdptr->result);
1369                 kfree(response_buf);
1370                 free_page(addr);
1371                 return 0;
1372         }
1373
1374         if (pcmdptr->command != cmd_ret_802_11_subscribe_event) {
1375                 lbs_pr_err("command response incorrect!\n");
1376                 kfree(response_buf);
1377                 free_page(addr);
1378                 return 0;
1379         }
1380
1381         res = count;
1382 out_unlock:
1383         free_page(addr);
1384         return res;
1385 }
1386
1387 static ssize_t libertas_rdmac_read(struct file *file, char __user *userbuf,
1388                                   size_t count, loff_t *ppos)
1389 {
1390         wlan_private *priv = file->private_data;
1391         wlan_adapter *adapter = priv->adapter;
1392         struct wlan_offset_value offval;
1393         ssize_t pos = 0;
1394         int ret;
1395         unsigned long addr = get_zeroed_page(GFP_KERNEL);
1396         char *buf = (char *)addr;
1397
1398         offval.offset = priv->mac_offset;
1399         offval.value = 0;
1400
1401         ret = libertas_prepare_and_send_command(priv,
1402                                 cmd_mac_reg_access, 0,
1403                                 cmd_option_waitforrsp, 0, &offval);
1404         mdelay(10);
1405         pos += snprintf(buf+pos, len-pos, "MAC[0x%x] = 0x%08x\n",
1406                                 priv->mac_offset, adapter->offsetvalue.value);
1407
1408         ret = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
1409         free_page(addr);
1410         return ret;
1411 }
1412
1413 static ssize_t libertas_rdmac_write(struct file *file,
1414                                     const char __user *userbuf,
1415                                     size_t count, loff_t *ppos)
1416 {
1417         wlan_private *priv = file->private_data;
1418         ssize_t res, buf_size;
1419         unsigned long addr = get_zeroed_page(GFP_KERNEL);
1420         char *buf = (char *)addr;
1421
1422         buf_size = min(count, len - 1);
1423         if (copy_from_user(buf, userbuf, buf_size)) {
1424                 res = -EFAULT;
1425                 goto out_unlock;
1426         }
1427         priv->mac_offset = simple_strtoul((char *)buf, NULL, 16);
1428         res = count;
1429 out_unlock:
1430         free_page(addr);
1431         return res;
1432 }
1433
1434 static ssize_t libertas_wrmac_write(struct file *file,
1435                                     const char __user *userbuf,
1436                                     size_t count, loff_t *ppos)
1437 {
1438
1439         wlan_private *priv = file->private_data;
1440         ssize_t res, buf_size;
1441         u32 offset, value;
1442         struct wlan_offset_value offval;
1443         unsigned long addr = get_zeroed_page(GFP_KERNEL);
1444         char *buf = (char *)addr;
1445
1446         buf_size = min(count, len - 1);
1447         if (copy_from_user(buf, userbuf, buf_size)) {
1448                 res = -EFAULT;
1449                 goto out_unlock;
1450         }
1451         res = sscanf(buf, "%x %x", &offset, &value);
1452         if (res != 2) {
1453                 res = -EFAULT;
1454                 goto out_unlock;
1455         }
1456
1457         offval.offset = offset;
1458         offval.value = value;
1459         res = libertas_prepare_and_send_command(priv,
1460                                 cmd_mac_reg_access, 1,
1461                                 cmd_option_waitforrsp, 0, &offval);
1462         mdelay(10);
1463
1464         res = count;
1465 out_unlock:
1466         free_page(addr);
1467         return res;
1468 }
1469
1470 static ssize_t libertas_rdbbp_read(struct file *file, char __user *userbuf,
1471                                   size_t count, loff_t *ppos)
1472 {
1473         wlan_private *priv = file->private_data;
1474         wlan_adapter *adapter = priv->adapter;
1475         struct wlan_offset_value offval;
1476         ssize_t pos = 0;
1477         int ret;
1478         unsigned long addr = get_zeroed_page(GFP_KERNEL);
1479         char *buf = (char *)addr;
1480
1481         offval.offset = priv->bbp_offset;
1482         offval.value = 0;
1483
1484         ret = libertas_prepare_and_send_command(priv,
1485                                 cmd_bbp_reg_access, 0,
1486                                 cmd_option_waitforrsp, 0, &offval);
1487         mdelay(10);
1488         pos += snprintf(buf+pos, len-pos, "BBP[0x%x] = 0x%08x\n",
1489                                 priv->bbp_offset, adapter->offsetvalue.value);
1490
1491         ret = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
1492         free_page(addr);
1493
1494         return ret;
1495 }
1496
1497 static ssize_t libertas_rdbbp_write(struct file *file,
1498                                     const char __user *userbuf,
1499                                     size_t count, loff_t *ppos)
1500 {
1501         wlan_private *priv = file->private_data;
1502         ssize_t res, buf_size;
1503         unsigned long addr = get_zeroed_page(GFP_KERNEL);
1504         char *buf = (char *)addr;
1505
1506         buf_size = min(count, len - 1);
1507         if (copy_from_user(buf, userbuf, buf_size)) {
1508                 res = -EFAULT;
1509                 goto out_unlock;
1510         }
1511         priv->bbp_offset = simple_strtoul((char *)buf, NULL, 16);
1512         res = count;
1513 out_unlock:
1514         free_page(addr);
1515         return res;
1516 }
1517
1518 static ssize_t libertas_wrbbp_write(struct file *file,
1519                                     const char __user *userbuf,
1520                                     size_t count, loff_t *ppos)
1521 {
1522
1523         wlan_private *priv = file->private_data;
1524         ssize_t res, buf_size;
1525         u32 offset, value;
1526         struct wlan_offset_value offval;
1527         unsigned long addr = get_zeroed_page(GFP_KERNEL);
1528         char *buf = (char *)addr;
1529
1530         buf_size = min(count, len - 1);
1531         if (copy_from_user(buf, userbuf, buf_size)) {
1532                 res = -EFAULT;
1533                 goto out_unlock;
1534         }
1535         res = sscanf(buf, "%x %x", &offset, &value);
1536         if (res != 2) {
1537                 res = -EFAULT;
1538                 goto out_unlock;
1539         }
1540
1541         offval.offset = offset;
1542         offval.value = value;
1543         res = libertas_prepare_and_send_command(priv,
1544                                 cmd_bbp_reg_access, 1,
1545                                 cmd_option_waitforrsp, 0, &offval);
1546         mdelay(10);
1547
1548         res = count;
1549 out_unlock:
1550         free_page(addr);
1551         return res;
1552 }
1553
1554 static ssize_t libertas_rdrf_read(struct file *file, char __user *userbuf,
1555                                   size_t count, loff_t *ppos)
1556 {
1557         wlan_private *priv = file->private_data;
1558         wlan_adapter *adapter = priv->adapter;
1559         struct wlan_offset_value offval;
1560         ssize_t pos = 0;
1561         int ret;
1562         unsigned long addr = get_zeroed_page(GFP_KERNEL);
1563         char *buf = (char *)addr;
1564
1565         offval.offset = priv->rf_offset;
1566         offval.value = 0;
1567
1568         ret = libertas_prepare_and_send_command(priv,
1569                                 cmd_rf_reg_access, 0,
1570                                 cmd_option_waitforrsp, 0, &offval);
1571         mdelay(10);
1572         pos += snprintf(buf+pos, len-pos, "RF[0x%x] = 0x%08x\n",
1573                                 priv->rf_offset, adapter->offsetvalue.value);
1574
1575         ret = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
1576         free_page(addr);
1577
1578         return ret;
1579 }
1580
1581 static ssize_t libertas_rdrf_write(struct file *file,
1582                                     const char __user *userbuf,
1583                                     size_t count, loff_t *ppos)
1584 {
1585         wlan_private *priv = file->private_data;
1586         ssize_t res, buf_size;
1587         unsigned long addr = get_zeroed_page(GFP_KERNEL);
1588         char *buf = (char *)addr;
1589
1590         buf_size = min(count, len - 1);
1591         if (copy_from_user(buf, userbuf, buf_size)) {
1592                 res = -EFAULT;
1593                 goto out_unlock;
1594         }
1595         priv->rf_offset = simple_strtoul((char *)buf, NULL, 16);
1596         res = count;
1597 out_unlock:
1598         free_page(addr);
1599         return res;
1600 }
1601
1602 static ssize_t libertas_wrrf_write(struct file *file,
1603                                     const char __user *userbuf,
1604                                     size_t count, loff_t *ppos)
1605 {
1606
1607         wlan_private *priv = file->private_data;
1608         ssize_t res, buf_size;
1609         u32 offset, value;
1610         struct wlan_offset_value offval;
1611         unsigned long addr = get_zeroed_page(GFP_KERNEL);
1612         char *buf = (char *)addr;
1613
1614         buf_size = min(count, len - 1);
1615         if (copy_from_user(buf, userbuf, buf_size)) {
1616                 res = -EFAULT;
1617                 goto out_unlock;
1618         }
1619         res = sscanf(buf, "%x %x", &offset, &value);
1620         if (res != 2) {
1621                 res = -EFAULT;
1622                 goto out_unlock;
1623         }
1624
1625         offval.offset = offset;
1626         offval.value = value;
1627         res = libertas_prepare_and_send_command(priv,
1628                                 cmd_rf_reg_access, 1,
1629                                 cmd_option_waitforrsp, 0, &offval);
1630         mdelay(10);
1631
1632         res = count;
1633 out_unlock:
1634         free_page(addr);
1635         return res;
1636 }
1637
1638 #define FOPS(fread, fwrite) { \
1639         .owner = THIS_MODULE, \
1640         .open = open_file_generic, \
1641         .read = (fread), \
1642         .write = (fwrite), \
1643 }
1644
1645 struct libertas_debugfs_files {
1646         char *name;
1647         int perm;
1648         struct file_operations fops;
1649 };
1650
1651 struct libertas_debugfs_files debugfs_files[] = {
1652         { "info", 0444, FOPS(libertas_dev_info, write_file_dummy), },
1653         { "getscantable", 0444, FOPS(libertas_getscantable,
1654                                         write_file_dummy), },
1655         { "sleepparams", 0644, FOPS(libertas_sleepparams_read,
1656                                 libertas_sleepparams_write), },
1657         { "extscan", 0600, FOPS(NULL, libertas_extscan), },
1658         { "setuserscan", 0600, FOPS(NULL, libertas_setuserscan), },
1659 };
1660
1661 struct libertas_debugfs_files debugfs_events_files[] = {
1662         {"low_rssi", 0644, FOPS(libertas_lowrssi_read,
1663                                 libertas_lowrssi_write), },
1664         {"low_snr", 0644, FOPS(libertas_lowsnr_read,
1665                                 libertas_lowsnr_write), },
1666         {"failure_count", 0644, FOPS(libertas_failcount_read,
1667                                 libertas_failcount_write), },
1668         {"beacon_missed", 0644, FOPS(libertas_bcnmiss_read,
1669                                 libertas_bcnmiss_write), },
1670         {"high_rssi", 0644, FOPS(libertas_highrssi_read,
1671                                 libertas_highrssi_write), },
1672         {"high_snr", 0644, FOPS(libertas_highsnr_read,
1673                                 libertas_highsnr_write), },
1674 };
1675
1676 struct libertas_debugfs_files debugfs_regs_files[] = {
1677         {"rdmac", 0644, FOPS(libertas_rdmac_read, libertas_rdmac_write), },
1678         {"wrmac", 0600, FOPS(NULL, libertas_wrmac_write), },
1679         {"rdbbp", 0644, FOPS(libertas_rdbbp_read, libertas_rdbbp_write), },
1680         {"wrbbp", 0600, FOPS(NULL, libertas_wrbbp_write), },
1681         {"rdrf", 0644, FOPS(libertas_rdrf_read, libertas_rdrf_write), },
1682         {"wrrf", 0600, FOPS(NULL, libertas_wrrf_write), },
1683 };
1684
1685 void libertas_debugfs_init(void)
1686 {
1687         if (!libertas_dir)
1688                 libertas_dir = debugfs_create_dir("libertas_wireless", NULL);
1689
1690         return;
1691 }
1692
1693 void libertas_debugfs_remove(void)
1694 {
1695         if (libertas_dir)
1696                  debugfs_remove(libertas_dir);
1697         return;
1698 }
1699
1700 void libertas_debugfs_init_one(wlan_private *priv, struct net_device *dev)
1701 {
1702         int i;
1703         struct libertas_debugfs_files *files;
1704         if (!libertas_dir)
1705                 goto exit;
1706
1707         priv->debugfs_dir = debugfs_create_dir(dev->name, libertas_dir);
1708         if (!priv->debugfs_dir)
1709                 goto exit;
1710
1711         for (i=0; i<ARRAY_SIZE(debugfs_files); i++) {
1712                 files = &debugfs_files[i];
1713                 priv->debugfs_files[i] = debugfs_create_file(files->name,
1714                                                              files->perm,
1715                                                              priv->debugfs_dir,
1716                                                              priv,
1717                                                              &files->fops);
1718         }
1719
1720         priv->events_dir = debugfs_create_dir("subscribed_events", priv->debugfs_dir);
1721         if (!priv->events_dir)
1722                 goto exit;
1723
1724         for (i=0; i<ARRAY_SIZE(debugfs_events_files); i++) {
1725                 files = &debugfs_events_files[i];
1726                 priv->debugfs_events_files[i] = debugfs_create_file(files->name,
1727                                                              files->perm,
1728                                                              priv->events_dir,
1729                                                              priv,
1730                                                              &files->fops);
1731         }
1732
1733         priv->regs_dir = debugfs_create_dir("registers", priv->debugfs_dir);
1734         if (!priv->regs_dir)
1735                 goto exit;
1736
1737         for (i=0; i<ARRAY_SIZE(debugfs_regs_files); i++) {
1738                 files = &debugfs_regs_files[i];
1739                 priv->debugfs_regs_files[i] = debugfs_create_file(files->name,
1740                                                              files->perm,
1741                                                              priv->regs_dir,
1742                                                              priv,
1743                                                              &files->fops);
1744         }
1745
1746 #ifdef PROC_DEBUG
1747         libertas_debug_init(priv, dev);
1748 #endif
1749 exit:
1750         return;
1751 }
1752
1753 void libertas_debugfs_remove_one(wlan_private *priv)
1754 {
1755         int i;
1756
1757         for(i=0; i<ARRAY_SIZE(debugfs_regs_files); i++)
1758                 debugfs_remove(priv->debugfs_regs_files[i]);
1759
1760         debugfs_remove(priv->regs_dir);
1761
1762         for(i=0; i<ARRAY_SIZE(debugfs_files); i++)
1763                 debugfs_remove(priv->debugfs_events_files[i]);
1764
1765         debugfs_remove(priv->events_dir);
1766 #ifdef PROC_DEBUG
1767         debugfs_remove(priv->debugfs_debug);
1768 #endif
1769         for(i=0; i<ARRAY_SIZE(debugfs_files); i++)
1770                 debugfs_remove(priv->debugfs_files[i]);
1771 }
1772
1773 /* debug entry */
1774
1775 #define item_size(n)    (FIELD_SIZEOF(wlan_adapter, n))
1776 #define item_addr(n)    (offsetof(wlan_adapter, n))
1777
1778 struct debug_data {
1779         char name[32];
1780         u32 size;
1781         u32 addr;
1782 };
1783
1784 /* To debug any member of wlan_adapter, simply add one line here.
1785  */
1786 static struct debug_data items[] = {
1787         {"intcounter", item_size(intcounter), item_addr(intcounter)},
1788         {"psmode", item_size(psmode), item_addr(psmode)},
1789         {"psstate", item_size(psstate), item_addr(psstate)},
1790 };
1791
1792 static int num_of_items = ARRAY_SIZE(items);
1793
1794 /**
1795  *  @brief proc read function
1796  *
1797  *  @param page    pointer to buffer
1798  *  @param s       read data starting position
1799  *  @param off     offset
1800  *  @param cnt     counter
1801  *  @param eof     end of file flag
1802  *  @param data    data to output
1803  *  @return        number of output data
1804  */
1805 static ssize_t wlan_debugfs_read(struct file *file, char __user *userbuf,
1806                         size_t count, loff_t *ppos)
1807 {
1808         int val = 0;
1809         size_t pos = 0;
1810         ssize_t res;
1811         char *p;
1812         int i;
1813         struct debug_data *d;
1814         unsigned long addr = get_zeroed_page(GFP_KERNEL);
1815         char *buf = (char *)addr;
1816
1817         p = buf;
1818
1819         d = (struct debug_data *)file->private_data;
1820
1821         for (i = 0; i < num_of_items; i++) {
1822                 if (d[i].size == 1)
1823                         val = *((u8 *) d[i].addr);
1824                 else if (d[i].size == 2)
1825                         val = *((u16 *) d[i].addr);
1826                 else if (d[i].size == 4)
1827                         val = *((u32 *) d[i].addr);
1828
1829                 pos += sprintf(p + pos, "%s=%d\n", d[i].name, val);
1830         }
1831
1832         res = simple_read_from_buffer(userbuf, count, ppos, p, pos);
1833
1834         free_page(addr);
1835         return res;
1836 }
1837
1838 /**
1839  *  @brief proc write function
1840  *
1841  *  @param f       file pointer
1842  *  @param buf     pointer to data buffer
1843  *  @param cnt     data number to write
1844  *  @param data    data to write
1845  *  @return        number of data
1846  */
1847 static int wlan_debugfs_write(struct file *f, const char __user *buf,
1848                             size_t cnt, loff_t *ppos)
1849 {
1850         int r, i;
1851         char *pdata;
1852         char *p;
1853         char *p0;
1854         char *p1;
1855         char *p2;
1856         struct debug_data *d = (struct debug_data *)f->private_data;
1857
1858         pdata = (char *)kmalloc(cnt, GFP_KERNEL);
1859         if (pdata == NULL)
1860                 return 0;
1861
1862         if (copy_from_user(pdata, buf, cnt)) {
1863                 lbs_pr_debug(1, "Copy from user failed\n");
1864                 kfree(pdata);
1865                 return 0;
1866         }
1867
1868         p0 = pdata;
1869         for (i = 0; i < num_of_items; i++) {
1870                 do {
1871                         p = strstr(p0, d[i].name);
1872                         if (p == NULL)
1873                                 break;
1874                         p1 = strchr(p, '\n');
1875                         if (p1 == NULL)
1876                                 break;
1877                         p0 = p1++;
1878                         p2 = strchr(p, '=');
1879                         if (!p2)
1880                                 break;
1881                         p2++;
1882                         r = simple_strtoul(p2, NULL, 0);
1883                         if (d[i].size == 1)
1884                                 *((u8 *) d[i].addr) = (u8) r;
1885                         else if (d[i].size == 2)
1886                                 *((u16 *) d[i].addr) = (u16) r;
1887                         else if (d[i].size == 4)
1888                                 *((u32 *) d[i].addr) = (u32) r;
1889                         break;
1890                 } while (1);
1891         }
1892         kfree(pdata);
1893
1894         return cnt;
1895 }
1896
1897 static struct file_operations libertas_debug_fops = {
1898         .owner = THIS_MODULE,
1899         .open = open_file_generic,
1900         .write = wlan_debugfs_write,
1901         .read = wlan_debugfs_read,
1902 };
1903
1904 /**
1905  *  @brief create debug proc file
1906  *
1907  *  @param priv    pointer wlan_private
1908  *  @param dev     pointer net_device
1909  *  @return        N/A
1910  */
1911 void libertas_debug_init(wlan_private * priv, struct net_device *dev)
1912 {
1913         int i;
1914
1915         if (!priv->debugfs_dir)
1916                 return;
1917
1918         for (i = 0; i < num_of_items; i++)
1919                 items[i].addr += (u32) priv->adapter;
1920
1921         priv->debugfs_debug = debugfs_create_file("debug", 0644,
1922                                                   priv->debugfs_dir, &items[0],
1923                                                   &libertas_debug_fops);
1924 }
1925
1926 /**
1927  *  @brief remove proc file
1928  *
1929  *  @param priv    pointer wlan_private
1930  *  @return        N/A
1931  */
1932 void libertas_debug_remove(wlan_private * priv)
1933 {
1934         debugfs_remove(priv->debugfs_debug);
1935 }