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 <linux/string.h>
   7 #include <net/iw_handler.h>
   8 #include <net/lib80211.h>
   9
  10 #include "dev.h"
  11 #include "decl.h"
  12 #include "host.h"
  13 #include "debugfs.h"
  14 #include "cmd.h"
  15
  16 static struct dentry *lbs_dir;
  17 static char *szStates[] = {
  18         "Connected",
  19         "Disconnected"
  20 };
  21
  22 #ifdef PROC_DEBUG
  23 static void lbs_debug_init(struct lbs_private *priv);
  24 #endif
  25
  26 static int open_file_generic(struct inode *inode, struct file *file)
  27 {
  28         file->private_data = inode->i_private;
  29         return 0;
  30 }
  31
  32 static ssize_t write_file_dummy(struct file *file, const char __user *buf,
  33                                 size_t count, loff_t *ppos)
  34 {
  35         return -EINVAL;
  36 }
  37
  38 static const size_t len = PAGE_SIZE;
  39
  40 static ssize_t lbs_dev_info(struct file *file, char __user *userbuf,
  41                                   size_t count, loff_t *ppos)
  42 {
  43         struct lbs_private *priv = file->private_data;
  44         size_t pos = 0;
  45         unsigned long addr = get_zeroed_page(GFP_KERNEL);
  46         char *buf = (char *)addr;
  47         ssize_t res;
  48
  49         pos += snprintf(buf+pos, len-pos, "state = %s\n",
  50                                 szStates[priv->connect_status]);
  51         pos += snprintf(buf+pos, len-pos, "region_code = %02x\n",
  52                                 (u32) priv->regioncode);
  53
  54         res = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
  55
  56         free_page(addr);
  57         return res;
  58 }
  59
  60
  61 static ssize_t lbs_getscantable(struct file *file, char __user *userbuf,
  62                                   size_t count, loff_t *ppos)
  63 {
  64         struct lbs_private *priv = file->private_data;
  65         size_t pos = 0;
  66         int numscansdone = 0, res;
  67         unsigned long addr = get_zeroed_page(GFP_KERNEL);
  68         char *buf = (char *)addr;
  69         DECLARE_SSID_BUF(ssid);
  70         struct bss_descriptor * iter_bss;
  71
  72         pos += snprintf(buf+pos, len-pos,
  73                 "# | ch  | rssi |       bssid       |   cap    | Qual | SSID \n");
  74
  75         mutex_lock(&priv->lock);
  76         list_for_each_entry (iter_bss, &priv->network_list, list) {
  77                 u16 ibss = (iter_bss->capability & WLAN_CAPABILITY_IBSS);
  78                 u16 privacy = (iter_bss->capability & WLAN_CAPABILITY_PRIVACY);
  79                 u16 spectrum_mgmt = (iter_bss->capability & WLAN_CAPABILITY_SPECTRUM_MGMT);
  80
  81                 pos += snprintf(buf+pos, len-pos, "%02u| %03d | %04d | %pM |",
  82                         numscansdone, iter_bss->channel, iter_bss->rssi,
  83                         iter_bss->bssid);
  84                 pos += snprintf(buf+pos, len-pos, " %04x-", iter_bss->capability);
  85                 pos += snprintf(buf+pos, len-pos, "%c%c%c |",
  86                                 ibss ? 'A' : 'I', privacy ? 'P' : ' ',
  87                                 spectrum_mgmt ? 'S' : ' ');
  88                 pos += snprintf(buf+pos, len-pos, " %04d |", SCAN_RSSI(iter_bss->rssi));
  89                 pos += snprintf(buf+pos, len-pos, " %s\n",
  90                                 print_ssid(ssid, iter_bss->ssid,
  91                                            iter_bss->ssid_len));
  92
  93                 numscansdone++;
  94         }
  95         mutex_unlock(&priv->lock);
  96
  97         res = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
  98
  99         free_page(addr);
 100         return res;
 101 }
 102
 103 static ssize_t lbs_sleepparams_write(struct file *file,
 104                                 const char __user *user_buf, size_t count,
 105                                 loff_t *ppos)
 106 {
 107         struct lbs_private *priv = file->private_data;
 108         ssize_t buf_size, ret;
 109         struct sleep_params sp;
 110         int p1, p2, p3, p4, p5, p6;
 111         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 112         char *buf = (char *)addr;
 113
 114         buf_size = min(count, len - 1);
 115         if (copy_from_user(buf, user_buf, buf_size)) {
 116                 ret = -EFAULT;
 117                 goto out_unlock;
 118         }
 119         ret = sscanf(buf, "%d %d %d %d %d %d", &p1, &p2, &p3, &p4, &p5, &p6);
 120         if (ret != 6) {
 121                 ret = -EINVAL;
 122                 goto out_unlock;
 123         }
 124         sp.sp_error = p1;
 125         sp.sp_offset = p2;
 126         sp.sp_stabletime = p3;
 127         sp.sp_calcontrol = p4;
 128         sp.sp_extsleepclk = p5;
 129         sp.sp_reserved = p6;
 130
 131         ret = lbs_cmd_802_11_sleep_params(priv, CMD_ACT_SET, &sp);
 132         if (!ret)
 133                 ret = count;
 134         else if (ret > 0)
 135                 ret = -EINVAL;
 136
 137 out_unlock:
 138         free_page(addr);
 139         return ret;
 140 }
 141
 142 static ssize_t lbs_sleepparams_read(struct file *file, char __user *userbuf,
 143                                   size_t count, loff_t *ppos)
 144 {
 145         struct lbs_private *priv = file->private_data;
 146         ssize_t ret;
 147         size_t pos = 0;
 148         struct sleep_params sp;
 149         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 150         char *buf = (char *)addr;
 151
 152         ret = lbs_cmd_802_11_sleep_params(priv, CMD_ACT_GET, &sp);
 153         if (ret)
 154                 goto out_unlock;
 155
 156         pos += snprintf(buf, len, "%d %d %d %d %d %d\n", sp.sp_error,
 157                         sp.sp_offset, sp.sp_stabletime,
 158                         sp.sp_calcontrol, sp.sp_extsleepclk,
 159                         sp.sp_reserved);
 160
 161         ret = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
 162
 163 out_unlock:
 164         free_page(addr);
 165         return ret;
 166 }
 167
 168 /*
 169  * When calling CMD_802_11_SUBSCRIBE_EVENT with CMD_ACT_GET, me might
 170  * get a bunch of vendor-specific TLVs (a.k.a. IEs) back from the
 171  * firmware. Here's an example:
 172  *      04 01 02 00 00 00 05 01 02 00 00 00 06 01 02 00
 173  *      00 00 07 01 02 00 3c 00 00 00 00 00 00 00 03 03
 174  *      00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 175  *
 176  * The 04 01 is the TLV type (here TLV_TYPE_RSSI_LOW), 02 00 is the length,
 177  * 00 00 are the data bytes of this TLV. For this TLV, their meaning is
 178  * defined in mrvlietypes_thresholds
 179  *
 180  * This function searches in this TLV data chunk for a given TLV type
 181  * and returns a pointer to the first data byte of the TLV, or to NULL
 182  * if the TLV hasn't been found.
 183  */
 184 static void *lbs_tlv_find(uint16_t tlv_type, const uint8_t *tlv, uint16_t size)
 185 {
 186         struct mrvlietypesheader *tlv_h;
 187         uint16_t length;
 188         ssize_t pos = 0;
 189
 190         while (pos < size) {
 191                 tlv_h = (struct mrvlietypesheader *) tlv;
 192                 if (!tlv_h->len)
 193                         return NULL;
 194                 if (tlv_h->type == cpu_to_le16(tlv_type))
 195                         return tlv_h;
 196                 length = le16_to_cpu(tlv_h->len) + sizeof(*tlv_h);
 197                 pos += length;
 198                 tlv += length;
 199         }
 200         return NULL;
 201 }
 202
 203
 204 static ssize_t lbs_threshold_read(uint16_t tlv_type, uint16_t event_mask,
 205                                   struct file *file, char __user *userbuf,
 206                                   size_t count, loff_t *ppos)
 207 {
 208         struct cmd_ds_802_11_subscribe_event *subscribed;
 209         struct mrvlietypes_thresholds *got;
 210         struct lbs_private *priv = file->private_data;
 211         ssize_t ret = 0;
 212         size_t pos = 0;
 213         char *buf;
 214         u8 value;
 215         u8 freq;
 216         int events = 0;
 217
 218         buf = (char *)get_zeroed_page(GFP_KERNEL);
 219         if (!buf)
 220                 return -ENOMEM;
 221
 222         subscribed = kzalloc(sizeof(*subscribed), GFP_KERNEL);
 223         if (!subscribed) {
 224                 ret = -ENOMEM;
 225                 goto out_page;
 226         }
 227
 228         subscribed->hdr.size = cpu_to_le16(sizeof(*subscribed));
 229         subscribed->action = cpu_to_le16(CMD_ACT_GET);
 230
 231         ret = lbs_cmd_with_response(priv, CMD_802_11_SUBSCRIBE_EVENT, subscribed);
 232         if (ret)
 233                 goto out_cmd;
 234
 235         got = lbs_tlv_find(tlv_type, subscribed->tlv, sizeof(subscribed->tlv));
 236         if (got) {
 237                 value = got->value;
 238                 freq  = got->freq;
 239                 events = le16_to_cpu(subscribed->events);
 240
 241                 pos += snprintf(buf, len, "%d %d %d\n", value, freq,
 242                                 !!(events & event_mask));
 243         }
 244
 245         ret = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
 246
 247  out_cmd:
 248         kfree(subscribed);
 249
 250  out_page:
 251         free_page((unsigned long)buf);
 252         return ret;
 253 }
 254
 255
 256 static ssize_t lbs_threshold_write(uint16_t tlv_type, uint16_t event_mask,
 257                                    struct file *file,
 258                                    const char __user *userbuf, size_t count,
 259                                    loff_t *ppos)
 260 {
 261         struct cmd_ds_802_11_subscribe_event *events;
 262         struct mrvlietypes_thresholds *tlv;
 263         struct lbs_private *priv = file->private_data;
 264         ssize_t buf_size;
 265         int value, freq, new_mask;
 266         uint16_t curr_mask;
 267         char *buf;
 268         int ret;
 269
 270         buf = (char *)get_zeroed_page(GFP_KERNEL);
 271         if (!buf)
 272                 return -ENOMEM;
 273
 274         buf_size = min(count, len - 1);
 275         if (copy_from_user(buf, userbuf, buf_size)) {
 276                 ret = -EFAULT;
 277                 goto out_page;
 278         }
 279         ret = sscanf(buf, "%d %d %d", &value, &freq, &new_mask);
 280         if (ret != 3) {
 281                 ret = -EINVAL;
 282                 goto out_page;
 283         }
 284         events = kzalloc(sizeof(*events), GFP_KERNEL);
 285         if (!events) {
 286                 ret = -ENOMEM;
 287                 goto out_page;
 288         }
 289
 290         events->hdr.size = cpu_to_le16(sizeof(*events));
 291         events->action = cpu_to_le16(CMD_ACT_GET);
 292
 293         ret = lbs_cmd_with_response(priv, CMD_802_11_SUBSCRIBE_EVENT, events);
 294         if (ret)
 295                 goto out_events;
 296
 297         curr_mask = le16_to_cpu(events->events);
 298
 299         if (new_mask)
 300                 new_mask = curr_mask | event_mask;
 301         else
 302                 new_mask = curr_mask & ~event_mask;
 303
 304         /* Now everything is set and we can send stuff down to the firmware */
 305
 306         tlv = (void *)events->tlv;
 307
 308         events->action = cpu_to_le16(CMD_ACT_SET);
 309         events->events = cpu_to_le16(new_mask);
 310         tlv->header.type = cpu_to_le16(tlv_type);
 311         tlv->header.len = cpu_to_le16(sizeof(*tlv) - sizeof(tlv->header));
 312         tlv->value = value;
 313         if (tlv_type != TLV_TYPE_BCNMISS)
 314                 tlv->freq = freq;
 315
 316         /* The command header, the action, the event mask, and one TLV */
 317         events->hdr.size = cpu_to_le16(sizeof(events->hdr) + 4 + sizeof(*tlv));
 318
 319         ret = lbs_cmd_with_response(priv, CMD_802_11_SUBSCRIBE_EVENT, events);
 320
 321         if (!ret)
 322                 ret = count;
 323  out_events:
 324         kfree(events);
 325  out_page:
 326         free_page((unsigned long)buf);
 327         return ret;
 328 }
 329
 330
 331 static ssize_t lbs_lowrssi_read(struct file *file, char __user *userbuf,
 332                                 size_t count, loff_t *ppos)
 333 {
 334         return lbs_threshold_read(TLV_TYPE_RSSI_LOW, CMD_SUBSCRIBE_RSSI_LOW,
 335                                   file, userbuf, count, ppos);
 336 }
 337
 338
 339 static ssize_t lbs_lowrssi_write(struct file *file, const char __user *userbuf,
 340                                  size_t count, loff_t *ppos)
 341 {
 342         return lbs_threshold_write(TLV_TYPE_RSSI_LOW, CMD_SUBSCRIBE_RSSI_LOW,
 343                                    file, userbuf, count, ppos);
 344 }
 345
 346
 347 static ssize_t lbs_lowsnr_read(struct file *file, char __user *userbuf,
 348                                size_t count, loff_t *ppos)
 349 {
 350         return lbs_threshold_read(TLV_TYPE_SNR_LOW, CMD_SUBSCRIBE_SNR_LOW,
 351                                   file, userbuf, count, ppos);
 352 }
 353
 354
 355 static ssize_t lbs_lowsnr_write(struct file *file, const char __user *userbuf,
 356                                 size_t count, loff_t *ppos)
 357 {
 358         return lbs_threshold_write(TLV_TYPE_SNR_LOW, CMD_SUBSCRIBE_SNR_LOW,
 359                                    file, userbuf, count, ppos);
 360 }
 361
 362
 363 static ssize_t lbs_failcount_read(struct file *file, char __user *userbuf,
 364                                   size_t count, loff_t *ppos)
 365 {
 366         return lbs_threshold_read(TLV_TYPE_FAILCOUNT, CMD_SUBSCRIBE_FAILCOUNT,
 367                                   file, userbuf, count, ppos);
 368 }
 369
 370
 371 static ssize_t lbs_failcount_write(struct file *file, const char __user *userbuf,
 372                                    size_t count, loff_t *ppos)
 373 {
 374         return lbs_threshold_write(TLV_TYPE_FAILCOUNT, CMD_SUBSCRIBE_FAILCOUNT,
 375                                    file, userbuf, count, ppos);
 376 }
 377
 378
 379 static ssize_t lbs_highrssi_read(struct file *file, char __user *userbuf,
 380                                  size_t count, loff_t *ppos)
 381 {
 382         return lbs_threshold_read(TLV_TYPE_RSSI_HIGH, CMD_SUBSCRIBE_RSSI_HIGH,
 383                                   file, userbuf, count, ppos);
 384 }
 385
 386
 387 static ssize_t lbs_highrssi_write(struct file *file, const char __user *userbuf,
 388                                   size_t count, loff_t *ppos)
 389 {
 390         return lbs_threshold_write(TLV_TYPE_RSSI_HIGH, CMD_SUBSCRIBE_RSSI_HIGH,
 391                                    file, userbuf, count, ppos);
 392 }
 393
 394
 395 static ssize_t lbs_highsnr_read(struct file *file, char __user *userbuf,
 396                                 size_t count, loff_t *ppos)
 397 {
 398         return lbs_threshold_read(TLV_TYPE_SNR_HIGH, CMD_SUBSCRIBE_SNR_HIGH,
 399                                   file, userbuf, count, ppos);
 400 }
 401
 402
 403 static ssize_t lbs_highsnr_write(struct file *file, const char __user *userbuf,
 404                                  size_t count, loff_t *ppos)
 405 {
 406         return lbs_threshold_write(TLV_TYPE_SNR_HIGH, CMD_SUBSCRIBE_SNR_HIGH,
 407                                    file, userbuf, count, ppos);
 408 }
 409
 410 static ssize_t lbs_bcnmiss_read(struct file *file, char __user *userbuf,
 411                                 size_t count, loff_t *ppos)
 412 {
 413         return lbs_threshold_read(TLV_TYPE_BCNMISS, CMD_SUBSCRIBE_BCNMISS,
 414                                   file, userbuf, count, ppos);
 415 }
 416
 417
 418 static ssize_t lbs_bcnmiss_write(struct file *file, const char __user *userbuf,
 419                                  size_t count, loff_t *ppos)
 420 {
 421         return lbs_threshold_write(TLV_TYPE_BCNMISS, CMD_SUBSCRIBE_BCNMISS,
 422                                    file, userbuf, count, ppos);
 423 }
 424
 425
 426
 427 static ssize_t lbs_rdmac_read(struct file *file, char __user *userbuf,
 428                                   size_t count, loff_t *ppos)
 429 {
 430         struct lbs_private *priv = file->private_data;
 431         struct lbs_offset_value offval;
 432         ssize_t pos = 0;
 433         int ret;
 434         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 435         char *buf = (char *)addr;
 436
 437         offval.offset = priv->mac_offset;
 438         offval.value = 0;
 439
 440         ret = lbs_prepare_and_send_command(priv,
 441                                 CMD_MAC_REG_ACCESS, 0,
 442                                 CMD_OPTION_WAITFORRSP, 0, &offval);
 443         mdelay(10);
 444         pos += snprintf(buf+pos, len-pos, "MAC[0x%x] = 0x%08x\n",
 445                                 priv->mac_offset, priv->offsetvalue.value);
 446
 447         ret = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
 448         free_page(addr);
 449         return ret;
 450 }
 451
 452 static ssize_t lbs_rdmac_write(struct file *file,
 453                                     const char __user *userbuf,
 454                                     size_t count, loff_t *ppos)
 455 {
 456         struct lbs_private *priv = file->private_data;
 457         ssize_t res, buf_size;
 458         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 459         char *buf = (char *)addr;
 460
 461         buf_size = min(count, len - 1);
 462         if (copy_from_user(buf, userbuf, buf_size)) {
 463                 res = -EFAULT;
 464                 goto out_unlock;
 465         }
 466         priv->mac_offset = simple_strtoul((char *)buf, NULL, 16);
 467         res = count;
 468 out_unlock:
 469         free_page(addr);
 470         return res;
 471 }
 472
 473 static ssize_t lbs_wrmac_write(struct file *file,
 474                                     const char __user *userbuf,
 475                                     size_t count, loff_t *ppos)
 476 {
 477
 478         struct lbs_private *priv = file->private_data;
 479         ssize_t res, buf_size;
 480         u32 offset, value;
 481         struct lbs_offset_value offval;
 482         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 483         char *buf = (char *)addr;
 484
 485         buf_size = min(count, len - 1);
 486         if (copy_from_user(buf, userbuf, buf_size)) {
 487                 res = -EFAULT;
 488                 goto out_unlock;
 489         }
 490         res = sscanf(buf, "%x %x", &offset, &value);
 491         if (res != 2) {
 492                 res = -EFAULT;
 493                 goto out_unlock;
 494         }
 495
 496         offval.offset = offset;
 497         offval.value = value;
 498         res = lbs_prepare_and_send_command(priv,
 499                                 CMD_MAC_REG_ACCESS, 1,
 500                                 CMD_OPTION_WAITFORRSP, 0, &offval);
 501         mdelay(10);
 502
 503         res = count;
 504 out_unlock:
 505         free_page(addr);
 506         return res;
 507 }
 508
 509 static ssize_t lbs_rdbbp_read(struct file *file, char __user *userbuf,
 510                                   size_t count, loff_t *ppos)
 511 {
 512         struct lbs_private *priv = file->private_data;
 513         struct lbs_offset_value offval;
 514         ssize_t pos = 0;
 515         int ret;
 516         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 517         char *buf = (char *)addr;
 518
 519         offval.offset = priv->bbp_offset;
 520         offval.value = 0;
 521
 522         ret = lbs_prepare_and_send_command(priv,
 523                                 CMD_BBP_REG_ACCESS, 0,
 524                                 CMD_OPTION_WAITFORRSP, 0, &offval);
 525         mdelay(10);
 526         pos += snprintf(buf+pos, len-pos, "BBP[0x%x] = 0x%08x\n",
 527                                 priv->bbp_offset, priv->offsetvalue.value);
 528
 529         ret = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
 530         free_page(addr);
 531
 532         return ret;
 533 }
 534
 535 static ssize_t lbs_rdbbp_write(struct file *file,
 536                                     const char __user *userbuf,
 537                                     size_t count, loff_t *ppos)
 538 {
 539         struct lbs_private *priv = file->private_data;
 540         ssize_t res, buf_size;
 541         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 542         char *buf = (char *)addr;
 543
 544         buf_size = min(count, len - 1);
 545         if (copy_from_user(buf, userbuf, buf_size)) {
 546                 res = -EFAULT;
 547                 goto out_unlock;
 548         }
 549         priv->bbp_offset = simple_strtoul((char *)buf, NULL, 16);
 550         res = count;
 551 out_unlock:
 552         free_page(addr);
 553         return res;
 554 }
 555
 556 static ssize_t lbs_wrbbp_write(struct file *file,
 557                                     const char __user *userbuf,
 558                                     size_t count, loff_t *ppos)
 559 {
 560
 561         struct lbs_private *priv = file->private_data;
 562         ssize_t res, buf_size;
 563         u32 offset, value;
 564         struct lbs_offset_value offval;
 565         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 566         char *buf = (char *)addr;
 567
 568         buf_size = min(count, len - 1);
 569         if (copy_from_user(buf, userbuf, buf_size)) {
 570                 res = -EFAULT;
 571                 goto out_unlock;
 572         }
 573         res = sscanf(buf, "%x %x", &offset, &value);
 574         if (res != 2) {
 575                 res = -EFAULT;
 576                 goto out_unlock;
 577         }
 578
 579         offval.offset = offset;
 580         offval.value = value;
 581         res = lbs_prepare_and_send_command(priv,
 582                                 CMD_BBP_REG_ACCESS, 1,
 583                                 CMD_OPTION_WAITFORRSP, 0, &offval);
 584         mdelay(10);
 585
 586         res = count;
 587 out_unlock:
 588         free_page(addr);
 589         return res;
 590 }
 591
 592 static ssize_t lbs_rdrf_read(struct file *file, char __user *userbuf,
 593                                   size_t count, loff_t *ppos)
 594 {
 595         struct lbs_private *priv = file->private_data;
 596         struct lbs_offset_value offval;
 597         ssize_t pos = 0;
 598         int ret;
 599         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 600         char *buf = (char *)addr;
 601
 602         offval.offset = priv->rf_offset;
 603         offval.value = 0;
 604
 605         ret = lbs_prepare_and_send_command(priv,
 606                                 CMD_RF_REG_ACCESS, 0,
 607                                 CMD_OPTION_WAITFORRSP, 0, &offval);
 608         mdelay(10);
 609         pos += snprintf(buf+pos, len-pos, "RF[0x%x] = 0x%08x\n",
 610                                 priv->rf_offset, priv->offsetvalue.value);
 611
 612         ret = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
 613         free_page(addr);
 614
 615         return ret;
 616 }
 617
 618 static ssize_t lbs_rdrf_write(struct file *file,
 619                                     const char __user *userbuf,
 620                                     size_t count, loff_t *ppos)
 621 {
 622         struct lbs_private *priv = file->private_data;
 623         ssize_t res, buf_size;
 624         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 625         char *buf = (char *)addr;
 626
 627         buf_size = min(count, len - 1);
 628         if (copy_from_user(buf, userbuf, buf_size)) {
 629                 res = -EFAULT;
 630                 goto out_unlock;
 631         }
 632         priv->rf_offset = simple_strtoul(buf, NULL, 16);
 633         res = count;
 634 out_unlock:
 635         free_page(addr);
 636         return res;
 637 }
 638
 639 static ssize_t lbs_wrrf_write(struct file *file,
 640                                     const char __user *userbuf,
 641                                     size_t count, loff_t *ppos)
 642 {
 643
 644         struct lbs_private *priv = file->private_data;
 645         ssize_t res, buf_size;
 646         u32 offset, value;
 647         struct lbs_offset_value offval;
 648         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 649         char *buf = (char *)addr;
 650
 651         buf_size = min(count, len - 1);
 652         if (copy_from_user(buf, userbuf, buf_size)) {
 653                 res = -EFAULT;
 654                 goto out_unlock;
 655         }
 656         res = sscanf(buf, "%x %x", &offset, &value);
 657         if (res != 2) {
 658                 res = -EFAULT;
 659                 goto out_unlock;
 660         }
 661
 662         offval.offset = offset;
 663         offval.value = value;
 664         res = lbs_prepare_and_send_command(priv,
 665                                 CMD_RF_REG_ACCESS, 1,
 666                                 CMD_OPTION_WAITFORRSP, 0, &offval);
 667         mdelay(10);
 668
 669         res = count;
 670 out_unlock:
 671         free_page(addr);
 672         return res;
 673 }
 674
 675 #define FOPS(fread, fwrite) { \
 676         .owner = THIS_MODULE, \
 677         .open = open_file_generic, \
 678         .read = (fread), \
 679         .write = (fwrite), \
 680 }
 681
 682 struct lbs_debugfs_files {
 683         const char *name;
 684         int perm;
 685         struct file_operations fops;
 686 };
 687
 688 static const struct lbs_debugfs_files debugfs_files[] = {
 689         { "info", 0444, FOPS(lbs_dev_info, write_file_dummy), },
 690         { "getscantable", 0444, FOPS(lbs_getscantable,
 691                                         write_file_dummy), },
 692         { "sleepparams", 0644, FOPS(lbs_sleepparams_read,
 693                                 lbs_sleepparams_write), },
 694 };
 695
 696 static const struct lbs_debugfs_files debugfs_events_files[] = {
 697         {"low_rssi", 0644, FOPS(lbs_lowrssi_read,
 698                                 lbs_lowrssi_write), },
 699         {"low_snr", 0644, FOPS(lbs_lowsnr_read,
 700                                 lbs_lowsnr_write), },
 701         {"failure_count", 0644, FOPS(lbs_failcount_read,
 702                                 lbs_failcount_write), },
 703         {"beacon_missed", 0644, FOPS(lbs_bcnmiss_read,
 704                                 lbs_bcnmiss_write), },
 705         {"high_rssi", 0644, FOPS(lbs_highrssi_read,
 706                                 lbs_highrssi_write), },
 707         {"high_snr", 0644, FOPS(lbs_highsnr_read,
 708                                 lbs_highsnr_write), },
 709 };
 710
 711 static const struct lbs_debugfs_files debugfs_regs_files[] = {
 712         {"rdmac", 0644, FOPS(lbs_rdmac_read, lbs_rdmac_write), },
 713         {"wrmac", 0600, FOPS(NULL, lbs_wrmac_write), },
 714         {"rdbbp", 0644, FOPS(lbs_rdbbp_read, lbs_rdbbp_write), },
 715         {"wrbbp", 0600, FOPS(NULL, lbs_wrbbp_write), },
 716         {"rdrf", 0644, FOPS(lbs_rdrf_read, lbs_rdrf_write), },
 717         {"wrrf", 0600, FOPS(NULL, lbs_wrrf_write), },
 718 };
 719
 720 void lbs_debugfs_init(void)
 721 {
 722         if (!lbs_dir)
 723                 lbs_dir = debugfs_create_dir("lbs_wireless", NULL);
 724
 725         return;
 726 }
 727
 728 void lbs_debugfs_remove(void)
 729 {
 730         if (lbs_dir)
 731                  debugfs_remove(lbs_dir);
 732         return;
 733 }
 734
 735 void lbs_debugfs_init_one(struct lbs_private *priv, struct net_device *dev)
 736 {
 737         int i;
 738         const struct lbs_debugfs_files *files;
 739         if (!lbs_dir)
 740                 goto exit;
 741
 742         priv->debugfs_dir = debugfs_create_dir(dev->name, lbs_dir);
 743         if (!priv->debugfs_dir)
 744                 goto exit;
 745
 746         for (i=0; i<ARRAY_SIZE(debugfs_files); i++) {
 747                 files = &debugfs_files[i];
 748                 priv->debugfs_files[i] = debugfs_create_file(files->name,
 749                                                              files->perm,
 750                                                              priv->debugfs_dir,
 751                                                              priv,
 752                                                              &files->fops);
 753         }
 754
 755         priv->events_dir = debugfs_create_dir("subscribed_events", priv->debugfs_dir);
 756         if (!priv->events_dir)
 757                 goto exit;
 758
 759         for (i=0; i<ARRAY_SIZE(debugfs_events_files); i++) {
 760                 files = &debugfs_events_files[i];
 761                 priv->debugfs_events_files[i] = debugfs_create_file(files->name,
 762                                                              files->perm,
 763                                                              priv->events_dir,
 764                                                              priv,
 765                                                              &files->fops);
 766         }
 767
 768         priv->regs_dir = debugfs_create_dir("registers", priv->debugfs_dir);
 769         if (!priv->regs_dir)
 770                 goto exit;
 771
 772         for (i=0; i<ARRAY_SIZE(debugfs_regs_files); i++) {
 773                 files = &debugfs_regs_files[i];
 774                 priv->debugfs_regs_files[i] = debugfs_create_file(files->name,
 775                                                              files->perm,
 776                                                              priv->regs_dir,
 777                                                              priv,
 778                                                              &files->fops);
 779         }
 780
 781 #ifdef PROC_DEBUG
 782         lbs_debug_init(priv);
 783 #endif
 784 exit:
 785         return;
 786 }
 787
 788 void lbs_debugfs_remove_one(struct lbs_private *priv)
 789 {
 790         int i;
 791
 792         for(i=0; i<ARRAY_SIZE(debugfs_regs_files); i++)
 793                 debugfs_remove(priv->debugfs_regs_files[i]);
 794
 795         debugfs_remove(priv->regs_dir);
 796
 797         for(i=0; i<ARRAY_SIZE(debugfs_events_files); i++)
 798                 debugfs_remove(priv->debugfs_events_files[i]);
 799
 800         debugfs_remove(priv->events_dir);
 801 #ifdef PROC_DEBUG
 802         debugfs_remove(priv->debugfs_debug);
 803 #endif
 804         for(i=0; i<ARRAY_SIZE(debugfs_files); i++)
 805                 debugfs_remove(priv->debugfs_files[i]);
 806         debugfs_remove(priv->debugfs_dir);
 807 }
 808
 809
 810
 811 /* debug entry */
 812
 813 #ifdef PROC_DEBUG
 814
 815 #define item_size(n)    (FIELD_SIZEOF(struct lbs_private, n))
 816 #define item_addr(n)    (offsetof(struct lbs_private, n))
 817
 818
 819 struct debug_data {
 820         char name[32];
 821         u32 size;
 822         size_t addr;
 823 };
 824
 825 /* To debug any member of struct lbs_private, simply add one line here.
 826  */
 827 static struct debug_data items[] = {
 828         {"psmode", item_size(psmode), item_addr(psmode)},
 829         {"psstate", item_size(psstate), item_addr(psstate)},
 830 };
 831
 832 static int num_of_items = ARRAY_SIZE(items);
 833
 834 /**
 835  *  @brief proc read function
 836  *
 837  *  @param page    pointer to buffer
 838  *  @param s       read data starting position
 839  *  @param off     offset
 840  *  @param cnt     counter
 841  *  @param eof     end of file flag
 842  *  @param data    data to output
 843  *  @return        number of output data
 844  */
 845 static ssize_t lbs_debugfs_read(struct file *file, char __user *userbuf,
 846                         size_t count, loff_t *ppos)
 847 {
 848         int val = 0;
 849         size_t pos = 0;
 850         ssize_t res;
 851         char *p;
 852         int i;
 853         struct debug_data *d;
 854         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 855         char *buf = (char *)addr;
 856
 857         p = buf;
 858
 859         d = (struct debug_data *)file->private_data;
 860
 861         for (i = 0; i < num_of_items; i++) {
 862                 if (d[i].size == 1)
 863                         val = *((u8 *) d[i].addr);
 864                 else if (d[i].size == 2)
 865                         val = *((u16 *) d[i].addr);
 866                 else if (d[i].size == 4)
 867                         val = *((u32 *) d[i].addr);
 868                 else if (d[i].size == 8)
 869                         val = *((u64 *) d[i].addr);
 870
 871                 pos += sprintf(p + pos, "%s=%d\n", d[i].name, val);
 872         }
 873
 874         res = simple_read_from_buffer(userbuf, count, ppos, p, pos);
 875
 876         free_page(addr);
 877         return res;
 878 }
 879
 880 /**
 881  *  @brief proc write function
 882  *
 883  *  @param f       file pointer
 884  *  @param buf     pointer to data buffer
 885  *  @param cnt     data number to write
 886  *  @param data    data to write
 887  *  @return        number of data
 888  */
 889 static ssize_t lbs_debugfs_write(struct file *f, const char __user *buf,
 890                             size_t cnt, loff_t *ppos)
 891 {
 892         int r, i;
 893         char *pdata;
 894         char *p;
 895         char *p0;
 896         char *p1;
 897         char *p2;
 898         struct debug_data *d = (struct debug_data *)f->private_data;
 899
 900         pdata = kmalloc(cnt, GFP_KERNEL);
 901         if (pdata == NULL)
 902                 return 0;
 903
 904         if (copy_from_user(pdata, buf, cnt)) {
 905                 lbs_deb_debugfs("Copy from user failed\n");
 906                 kfree(pdata);
 907                 return 0;
 908         }
 909
 910         p0 = pdata;
 911         for (i = 0; i < num_of_items; i++) {
 912                 do {
 913                         p = strstr(p0, d[i].name);
 914                         if (p == NULL)
 915                                 break;
 916                         p1 = strchr(p, '\n');
 917                         if (p1 == NULL)
 918                                 break;
 919                         p0 = p1++;
 920                         p2 = strchr(p, '=');
 921                         if (!p2)
 922                                 break;
 923                         p2++;
 924                         r = simple_strtoul(p2, NULL, 0);
 925                         if (d[i].size == 1)
 926                                 *((u8 *) d[i].addr) = (u8) r;
 927                         else if (d[i].size == 2)
 928                                 *((u16 *) d[i].addr) = (u16) r;
 929                         else if (d[i].size == 4)
 930                                 *((u32 *) d[i].addr) = (u32) r;
 931                         else if (d[i].size == 8)
 932                                 *((u64 *) d[i].addr) = (u64) r;
 933                         break;
 934                 } while (1);
 935         }
 936         kfree(pdata);
 937
 938         return (ssize_t)cnt;
 939 }
 940
 941 static const struct file_operations lbs_debug_fops = {
 942         .owner = THIS_MODULE,
 943         .open = open_file_generic,
 944         .write = lbs_debugfs_write,
 945         .read = lbs_debugfs_read,
 946 };
 947
 948 /**
 949  *  @brief create debug proc file
 950  *
 951  *  @param priv    pointer struct lbs_private
 952  *  @param dev     pointer net_device
 953  *  @return        N/A
 954  */
 955 static void lbs_debug_init(struct lbs_private *priv)
 956 {
 957         int i;
 958
 959         if (!priv->debugfs_dir)
 960                 return;
 961
 962         for (i = 0; i < num_of_items; i++)
 963                 items[i].addr += (size_t) priv;
 964
 965         priv->debugfs_debug = debugfs_create_file("debug", 0644,
 966                                                   priv->debugfs_dir, &items[0],
 967                                                   &lbs_debug_fops);
 968 }
 969 #endif