drivers/net/wireless/libertas/debugfs.c

   1 #include <linux/dcache.h>
   2 #include <linux/debugfs.h>
   3 #include <linux/delay.h>
   4 #include <linux/mm.h>
   5 #include <linux/string.h>
   6 #include <linux/slab.h>
   7
   8 #include "decl.h"
   9 #include "cmd.h"
  10 #include "debugfs.h"
  11
  12 static struct dentry *lbs_dir;
  13 static char *szStates[] = {
  14         "Connected",
  15         "Disconnected"
  16 };
  17
  18 #ifdef PROC_DEBUG
  19 static void lbs_debug_init(struct lbs_private *priv);
  20 #endif
  21
  22 static int open_file_generic(struct inode *inode, struct file *file)
  23 {
  24         file->private_data = inode->i_private;
  25         return 0;
  26 }
  27
  28 static ssize_t write_file_dummy(struct file *file, const char __user *buf,
  29                                 size_t count, loff_t *ppos)
  30 {
  31         return -EINVAL;
  32 }
  33
  34 static const size_t len = PAGE_SIZE;
  35
  36 static ssize_t lbs_dev_info(struct file *file, char __user *userbuf,
  37                                   size_t count, loff_t *ppos)
  38 {
  39         struct lbs_private *priv = file->private_data;
  40         size_t pos = 0;
  41         unsigned long addr = get_zeroed_page(GFP_KERNEL);
  42         char *buf = (char *)addr;
  43         ssize_t res;
  44         if (!buf)
  45                 return -ENOMEM;
  46
  47         pos += snprintf(buf+pos, len-pos, "state = %s\n",
  48                                 szStates[priv->connect_status]);
  49         pos += snprintf(buf+pos, len-pos, "region_code = %02x\n",
  50                                 (u32) priv->regioncode);
  51
  52         res = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
  53
  54         free_page(addr);
  55         return res;
  56 }
  57
  58 static ssize_t lbs_sleepparams_write(struct file *file,
  59                                 const char __user *user_buf, size_t count,
  60                                 loff_t *ppos)
  61 {
  62         struct lbs_private *priv = file->private_data;
  63         ssize_t buf_size, ret;
  64         struct sleep_params sp;
  65         int p1, p2, p3, p4, p5, p6;
  66         unsigned long addr = get_zeroed_page(GFP_KERNEL);
  67         char *buf = (char *)addr;
  68         if (!buf)
  69                 return -ENOMEM;
  70
  71         buf_size = min(count, len - 1);
  72         if (copy_from_user(buf, user_buf, buf_size)) {
  73                 ret = -EFAULT;
  74                 goto out_unlock;
  75         }
  76         ret = sscanf(buf, "%d %d %d %d %d %d", &p1, &p2, &p3, &p4, &p5, &p6);
  77         if (ret != 6) {
  78                 ret = -EINVAL;
  79                 goto out_unlock;
  80         }
  81         sp.sp_error = p1;
  82         sp.sp_offset = p2;
  83         sp.sp_stabletime = p3;
  84         sp.sp_calcontrol = p4;
  85         sp.sp_extsleepclk = p5;
  86         sp.sp_reserved = p6;
  87
  88         ret = lbs_cmd_802_11_sleep_params(priv, CMD_ACT_SET, &sp);
  89         if (!ret)
  90                 ret = count;
  91         else if (ret > 0)
  92                 ret = -EINVAL;
  93
  94 out_unlock:
  95         free_page(addr);
  96         return ret;
  97 }
  98
  99 static ssize_t lbs_sleepparams_read(struct file *file, char __user *userbuf,
 100                                   size_t count, loff_t *ppos)
 101 {
 102         struct lbs_private *priv = file->private_data;
 103         ssize_t ret;
 104         size_t pos = 0;
 105         struct sleep_params sp;
 106         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 107         char *buf = (char *)addr;
 108         if (!buf)
 109                 return -ENOMEM;
 110
 111         ret = lbs_cmd_802_11_sleep_params(priv, CMD_ACT_GET, &sp);
 112         if (ret)
 113                 goto out_unlock;
 114
 115         pos += snprintf(buf, len, "%d %d %d %d %d %d\n", sp.sp_error,
 116                         sp.sp_offset, sp.sp_stabletime,
 117                         sp.sp_calcontrol, sp.sp_extsleepclk,
 118                         sp.sp_reserved);
 119
 120         ret = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
 121
 122 out_unlock:
 123         free_page(addr);
 124         return ret;
 125 }
 126
 127 static ssize_t lbs_host_sleep_write(struct file *file,
 128                                 const char __user *user_buf, size_t count,
 129                                 loff_t *ppos)
 130 {
 131         struct lbs_private *priv = file->private_data;
 132         ssize_t buf_size, ret;
 133         int host_sleep;
 134         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 135         char *buf = (char *)addr;
 136         if (!buf)
 137                 return -ENOMEM;
 138
 139         buf_size = min(count, len - 1);
 140         if (copy_from_user(buf, user_buf, buf_size)) {
 141                 ret = -EFAULT;
 142                 goto out_unlock;
 143         }
 144         ret = sscanf(buf, "%d", &host_sleep);
 145         if (ret != 1) {
 146                 ret = -EINVAL;
 147                 goto out_unlock;
 148         }
 149
 150         if (host_sleep == 0)
 151                 ret = lbs_set_host_sleep(priv, 0);
 152         else if (host_sleep == 1) {
 153                 if (priv->wol_criteria == EHS_REMOVE_WAKEUP) {
 154                         lbs_pr_info("wake parameters not configured");
 155                         ret = -EINVAL;
 156                         goto out_unlock;
 157                 }
 158                 ret = lbs_set_host_sleep(priv, 1);
 159         } else {
 160                 lbs_pr_err("invalid option\n");
 161                 ret = -EINVAL;
 162         }
 163
 164         if (!ret)
 165                 ret = count;
 166
 167 out_unlock:
 168         free_page(addr);
 169         return ret;
 170 }
 171
 172 static ssize_t lbs_host_sleep_read(struct file *file, char __user *userbuf,
 173                                   size_t count, loff_t *ppos)
 174 {
 175         struct lbs_private *priv = file->private_data;
 176         ssize_t ret;
 177         size_t pos = 0;
 178         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 179         char *buf = (char *)addr;
 180         if (!buf)
 181                 return -ENOMEM;
 182
 183         pos += snprintf(buf, len, "%d\n", priv->is_host_sleep_activated);
 184
 185         ret = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
 186
 187         free_page(addr);
 188         return ret;
 189 }
 190
 191 /*
 192  * When calling CMD_802_11_SUBSCRIBE_EVENT with CMD_ACT_GET, me might
 193  * get a bunch of vendor-specific TLVs (a.k.a. IEs) back from the
 194  * firmware. Here's an example:
 195  *      04 01 02 00 00 00 05 01 02 00 00 00 06 01 02 00
 196  *      00 00 07 01 02 00 3c 00 00 00 00 00 00 00 03 03
 197  *      00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 198  *
 199  * The 04 01 is the TLV type (here TLV_TYPE_RSSI_LOW), 02 00 is the length,
 200  * 00 00 are the data bytes of this TLV. For this TLV, their meaning is
 201  * defined in mrvlietypes_thresholds
 202  *
 203  * This function searches in this TLV data chunk for a given TLV type
 204  * and returns a pointer to the first data byte of the TLV, or to NULL
 205  * if the TLV hasn't been found.
 206  */
 207 static void *lbs_tlv_find(uint16_t tlv_type, const uint8_t *tlv, uint16_t size)
 208 {
 209         struct mrvl_ie_header *tlv_h;
 210         uint16_t length;
 211         ssize_t pos = 0;
 212
 213         while (pos < size) {
 214                 tlv_h = (struct mrvl_ie_header *) tlv;
 215                 if (!tlv_h->len)
 216                         return NULL;
 217                 if (tlv_h->type == cpu_to_le16(tlv_type))
 218                         return tlv_h;
 219                 length = le16_to_cpu(tlv_h->len) + sizeof(*tlv_h);
 220                 pos += length;
 221                 tlv += length;
 222         }
 223         return NULL;
 224 }
 225
 226
 227 static ssize_t lbs_threshold_read(uint16_t tlv_type, uint16_t event_mask,
 228                                   struct file *file, char __user *userbuf,
 229                                   size_t count, loff_t *ppos)
 230 {
 231         struct cmd_ds_802_11_subscribe_event *subscribed;
 232         struct mrvl_ie_thresholds *got;
 233         struct lbs_private *priv = file->private_data;
 234         ssize_t ret = 0;
 235         size_t pos = 0;
 236         char *buf;
 237         u8 value;
 238         u8 freq;
 239         int events = 0;
 240
 241         buf = (char *)get_zeroed_page(GFP_KERNEL);
 242         if (!buf)
 243                 return -ENOMEM;
 244
 245         subscribed = kzalloc(sizeof(*subscribed), GFP_KERNEL);
 246         if (!subscribed) {
 247                 ret = -ENOMEM;
 248                 goto out_page;
 249         }
 250
 251         subscribed->hdr.size = cpu_to_le16(sizeof(*subscribed));
 252         subscribed->action = cpu_to_le16(CMD_ACT_GET);
 253
 254         ret = lbs_cmd_with_response(priv, CMD_802_11_SUBSCRIBE_EVENT, subscribed);
 255         if (ret)
 256                 goto out_cmd;
 257
 258         got = lbs_tlv_find(tlv_type, subscribed->tlv, sizeof(subscribed->tlv));
 259         if (got) {
 260                 value = got->value;
 261                 freq  = got->freq;
 262                 events = le16_to_cpu(subscribed->events);
 263
 264                 pos += snprintf(buf, len, "%d %d %d\n", value, freq,
 265                                 !!(events & event_mask));
 266         }
 267
 268         ret = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
 269
 270  out_cmd:
 271         kfree(subscribed);
 272
 273  out_page:
 274         free_page((unsigned long)buf);
 275         return ret;
 276 }
 277
 278
 279 static ssize_t lbs_threshold_write(uint16_t tlv_type, uint16_t event_mask,
 280                                    struct file *file,
 281                                    const char __user *userbuf, size_t count,
 282                                    loff_t *ppos)
 283 {
 284         struct cmd_ds_802_11_subscribe_event *events;
 285         struct mrvl_ie_thresholds *tlv;
 286         struct lbs_private *priv = file->private_data;
 287         ssize_t buf_size;
 288         int value, freq, new_mask;
 289         uint16_t curr_mask;
 290         char *buf;
 291         int ret;
 292
 293         buf = (char *)get_zeroed_page(GFP_KERNEL);
 294         if (!buf)
 295                 return -ENOMEM;
 296
 297         buf_size = min(count, len - 1);
 298         if (copy_from_user(buf, userbuf, buf_size)) {
 299                 ret = -EFAULT;
 300                 goto out_page;
 301         }
 302         ret = sscanf(buf, "%d %d %d", &value, &freq, &new_mask);
 303         if (ret != 3) {
 304                 ret = -EINVAL;
 305                 goto out_page;
 306         }
 307         events = kzalloc(sizeof(*events), GFP_KERNEL);
 308         if (!events) {
 309                 ret = -ENOMEM;
 310                 goto out_page;
 311         }
 312
 313         events->hdr.size = cpu_to_le16(sizeof(*events));
 314         events->action = cpu_to_le16(CMD_ACT_GET);
 315
 316         ret = lbs_cmd_with_response(priv, CMD_802_11_SUBSCRIBE_EVENT, events);
 317         if (ret)
 318                 goto out_events;
 319
 320         curr_mask = le16_to_cpu(events->events);
 321
 322         if (new_mask)
 323                 new_mask = curr_mask | event_mask;
 324         else
 325                 new_mask = curr_mask & ~event_mask;
 326
 327         /* Now everything is set and we can send stuff down to the firmware */
 328
 329         tlv = (void *)events->tlv;
 330
 331         events->action = cpu_to_le16(CMD_ACT_SET);
 332         events->events = cpu_to_le16(new_mask);
 333         tlv->header.type = cpu_to_le16(tlv_type);
 334         tlv->header.len = cpu_to_le16(sizeof(*tlv) - sizeof(tlv->header));
 335         tlv->value = value;
 336         if (tlv_type != TLV_TYPE_BCNMISS)
 337                 tlv->freq = freq;
 338
 339         /* The command header, the action, the event mask, and one TLV */
 340         events->hdr.size = cpu_to_le16(sizeof(events->hdr) + 4 + sizeof(*tlv));
 341
 342         ret = lbs_cmd_with_response(priv, CMD_802_11_SUBSCRIBE_EVENT, events);
 343
 344         if (!ret)
 345                 ret = count;
 346  out_events:
 347         kfree(events);
 348  out_page:
 349         free_page((unsigned long)buf);
 350         return ret;
 351 }
 352
 353
 354 static ssize_t lbs_lowrssi_read(struct file *file, char __user *userbuf,
 355                                 size_t count, loff_t *ppos)
 356 {
 357         return lbs_threshold_read(TLV_TYPE_RSSI_LOW, CMD_SUBSCRIBE_RSSI_LOW,
 358                                   file, userbuf, count, ppos);
 359 }
 360
 361
 362 static ssize_t lbs_lowrssi_write(struct file *file, const char __user *userbuf,
 363                                  size_t count, loff_t *ppos)
 364 {
 365         return lbs_threshold_write(TLV_TYPE_RSSI_LOW, CMD_SUBSCRIBE_RSSI_LOW,
 366                                    file, userbuf, count, ppos);
 367 }
 368
 369
 370 static ssize_t lbs_lowsnr_read(struct file *file, char __user *userbuf,
 371                                size_t count, loff_t *ppos)
 372 {
 373         return lbs_threshold_read(TLV_TYPE_SNR_LOW, CMD_SUBSCRIBE_SNR_LOW,
 374                                   file, userbuf, count, ppos);
 375 }
 376
 377
 378 static ssize_t lbs_lowsnr_write(struct file *file, const char __user *userbuf,
 379                                 size_t count, loff_t *ppos)
 380 {
 381         return lbs_threshold_write(TLV_TYPE_SNR_LOW, CMD_SUBSCRIBE_SNR_LOW,
 382                                    file, userbuf, count, ppos);
 383 }
 384
 385
 386 static ssize_t lbs_failcount_read(struct file *file, char __user *userbuf,
 387                                   size_t count, loff_t *ppos)
 388 {
 389         return lbs_threshold_read(TLV_TYPE_FAILCOUNT, CMD_SUBSCRIBE_FAILCOUNT,
 390                                   file, userbuf, count, ppos);
 391 }
 392
 393
 394 static ssize_t lbs_failcount_write(struct file *file, const char __user *userbuf,
 395                                    size_t count, loff_t *ppos)
 396 {
 397         return lbs_threshold_write(TLV_TYPE_FAILCOUNT, CMD_SUBSCRIBE_FAILCOUNT,
 398                                    file, userbuf, count, ppos);
 399 }
 400
 401
 402 static ssize_t lbs_highrssi_read(struct file *file, char __user *userbuf,
 403                                  size_t count, loff_t *ppos)
 404 {
 405         return lbs_threshold_read(TLV_TYPE_RSSI_HIGH, CMD_SUBSCRIBE_RSSI_HIGH,
 406                                   file, userbuf, count, ppos);
 407 }
 408
 409
 410 static ssize_t lbs_highrssi_write(struct file *file, const char __user *userbuf,
 411                                   size_t count, loff_t *ppos)
 412 {
 413         return lbs_threshold_write(TLV_TYPE_RSSI_HIGH, CMD_SUBSCRIBE_RSSI_HIGH,
 414                                    file, userbuf, count, ppos);
 415 }
 416
 417
 418 static ssize_t lbs_highsnr_read(struct file *file, char __user *userbuf,
 419                                 size_t count, loff_t *ppos)
 420 {
 421         return lbs_threshold_read(TLV_TYPE_SNR_HIGH, CMD_SUBSCRIBE_SNR_HIGH,
 422                                   file, userbuf, count, ppos);
 423 }
 424
 425
 426 static ssize_t lbs_highsnr_write(struct file *file, const char __user *userbuf,
 427                                  size_t count, loff_t *ppos)
 428 {
 429         return lbs_threshold_write(TLV_TYPE_SNR_HIGH, CMD_SUBSCRIBE_SNR_HIGH,
 430                                    file, userbuf, count, ppos);
 431 }
 432
 433 static ssize_t lbs_bcnmiss_read(struct file *file, char __user *userbuf,
 434                                 size_t count, loff_t *ppos)
 435 {
 436         return lbs_threshold_read(TLV_TYPE_BCNMISS, CMD_SUBSCRIBE_BCNMISS,
 437                                   file, userbuf, count, ppos);
 438 }
 439
 440
 441 static ssize_t lbs_bcnmiss_write(struct file *file, const char __user *userbuf,
 442                                  size_t count, loff_t *ppos)
 443 {
 444         return lbs_threshold_write(TLV_TYPE_BCNMISS, CMD_SUBSCRIBE_BCNMISS,
 445                                    file, userbuf, count, ppos);
 446 }
 447
 448
 449 static ssize_t lbs_rdmac_read(struct file *file, char __user *userbuf,
 450                                   size_t count, loff_t *ppos)
 451 {
 452         struct lbs_private *priv = file->private_data;
 453         ssize_t pos = 0;
 454         int ret;
 455         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 456         char *buf = (char *)addr;
 457         u32 val = 0;
 458
 459         if (!buf)
 460                 return -ENOMEM;
 461
 462         ret = lbs_get_reg(priv, CMD_MAC_REG_ACCESS, priv->mac_offset, &val);
 463         mdelay(10);
 464         if (!ret) {
 465                 pos = snprintf(buf, len, "MAC[0x%x] = 0x%08x\n",
 466                                 priv->mac_offset, val);
 467                 ret = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
 468         }
 469         free_page(addr);
 470         return ret;
 471 }
 472
 473 static ssize_t lbs_rdmac_write(struct file *file,
 474                                     const char __user *userbuf,
 475                                     size_t count, loff_t *ppos)
 476 {
 477         struct lbs_private *priv = file->private_data;
 478         ssize_t res, buf_size;
 479         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 480         char *buf = (char *)addr;
 481         if (!buf)
 482                 return -ENOMEM;
 483
 484         buf_size = min(count, len - 1);
 485         if (copy_from_user(buf, userbuf, buf_size)) {
 486                 res = -EFAULT;
 487                 goto out_unlock;
 488         }
 489         priv->mac_offset = simple_strtoul((char *)buf, NULL, 16);
 490         res = count;
 491 out_unlock:
 492         free_page(addr);
 493         return res;
 494 }
 495
 496 static ssize_t lbs_wrmac_write(struct file *file,
 497                                     const char __user *userbuf,
 498                                     size_t count, loff_t *ppos)
 499 {
 500
 501         struct lbs_private *priv = file->private_data;
 502         ssize_t res, buf_size;
 503         u32 offset, value;
 504         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 505         char *buf = (char *)addr;
 506         if (!buf)
 507                 return -ENOMEM;
 508
 509         buf_size = min(count, len - 1);
 510         if (copy_from_user(buf, userbuf, buf_size)) {
 511                 res = -EFAULT;
 512                 goto out_unlock;
 513         }
 514         res = sscanf(buf, "%x %x", &offset, &value);
 515         if (res != 2) {
 516                 res = -EFAULT;
 517                 goto out_unlock;
 518         }
 519
 520         res = lbs_set_reg(priv, CMD_MAC_REG_ACCESS, offset, value);
 521         mdelay(10);
 522
 523         if (!res)
 524                 res = count;
 525 out_unlock:
 526         free_page(addr);
 527         return res;
 528 }
 529
 530 static ssize_t lbs_rdbbp_read(struct file *file, char __user *userbuf,
 531                                   size_t count, loff_t *ppos)
 532 {
 533         struct lbs_private *priv = file->private_data;
 534         ssize_t pos = 0;
 535         int ret;
 536         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 537         char *buf = (char *)addr;
 538         u32 val;
 539
 540         if (!buf)
 541                 return -ENOMEM;
 542
 543         ret = lbs_get_reg(priv, CMD_BBP_REG_ACCESS, priv->bbp_offset, &val);
 544         mdelay(10);
 545         if (!ret) {
 546                 pos = snprintf(buf, len, "BBP[0x%x] = 0x%08x\n",
 547                                 priv->bbp_offset, val);
 548                 ret = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
 549         }
 550         free_page(addr);
 551
 552         return ret;
 553 }
 554
 555 static ssize_t lbs_rdbbp_write(struct file *file,
 556                                     const char __user *userbuf,
 557                                     size_t count, loff_t *ppos)
 558 {
 559         struct lbs_private *priv = file->private_data;
 560         ssize_t res, buf_size;
 561         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 562         char *buf = (char *)addr;
 563         if (!buf)
 564                 return -ENOMEM;
 565
 566         buf_size = min(count, len - 1);
 567         if (copy_from_user(buf, userbuf, buf_size)) {
 568                 res = -EFAULT;
 569                 goto out_unlock;
 570         }
 571         priv->bbp_offset = simple_strtoul((char *)buf, NULL, 16);
 572         res = count;
 573 out_unlock:
 574         free_page(addr);
 575         return res;
 576 }
 577
 578 static ssize_t lbs_wrbbp_write(struct file *file,
 579                                     const char __user *userbuf,
 580                                     size_t count, loff_t *ppos)
 581 {
 582
 583         struct lbs_private *priv = file->private_data;
 584         ssize_t res, buf_size;
 585         u32 offset, value;
 586         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 587         char *buf = (char *)addr;
 588         if (!buf)
 589                 return -ENOMEM;
 590
 591         buf_size = min(count, len - 1);
 592         if (copy_from_user(buf, userbuf, buf_size)) {
 593                 res = -EFAULT;
 594                 goto out_unlock;
 595         }
 596         res = sscanf(buf, "%x %x", &offset, &value);
 597         if (res != 2) {
 598                 res = -EFAULT;
 599                 goto out_unlock;
 600         }
 601
 602         res = lbs_set_reg(priv, CMD_BBP_REG_ACCESS, offset, value);
 603         mdelay(10);
 604
 605         if (!res)
 606                 res = count;
 607 out_unlock:
 608         free_page(addr);
 609         return res;
 610 }
 611
 612 static ssize_t lbs_rdrf_read(struct file *file, char __user *userbuf,
 613                                   size_t count, loff_t *ppos)
 614 {
 615         struct lbs_private *priv = file->private_data;
 616         ssize_t pos = 0;
 617         int ret;
 618         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 619         char *buf = (char *)addr;
 620         u32 val;
 621
 622         if (!buf)
 623                 return -ENOMEM;
 624
 625         ret = lbs_get_reg(priv, CMD_RF_REG_ACCESS, priv->rf_offset, &val);
 626         mdelay(10);
 627         if (!ret) {
 628                 pos = snprintf(buf, len, "RF[0x%x] = 0x%08x\n",
 629                                 priv->rf_offset, val);
 630                 ret = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
 631         }
 632         free_page(addr);
 633
 634         return ret;
 635 }
 636
 637 static ssize_t lbs_rdrf_write(struct file *file,
 638                                     const char __user *userbuf,
 639                                     size_t count, loff_t *ppos)
 640 {
 641         struct lbs_private *priv = file->private_data;
 642         ssize_t res, buf_size;
 643         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 644         char *buf = (char *)addr;
 645         if (!buf)
 646                 return -ENOMEM;
 647
 648         buf_size = min(count, len - 1);
 649         if (copy_from_user(buf, userbuf, buf_size)) {
 650                 res = -EFAULT;
 651                 goto out_unlock;
 652         }
 653         priv->rf_offset = simple_strtoul(buf, NULL, 16);
 654         res = count;
 655 out_unlock:
 656         free_page(addr);
 657         return res;
 658 }
 659
 660 static ssize_t lbs_wrrf_write(struct file *file,
 661                                     const char __user *userbuf,
 662                                     size_t count, loff_t *ppos)
 663 {
 664
 665         struct lbs_private *priv = file->private_data;
 666         ssize_t res, buf_size;
 667         u32 offset, value;
 668         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 669         char *buf = (char *)addr;
 670         if (!buf)
 671                 return -ENOMEM;
 672
 673         buf_size = min(count, len - 1);
 674         if (copy_from_user(buf, userbuf, buf_size)) {
 675                 res = -EFAULT;
 676                 goto out_unlock;
 677         }
 678         res = sscanf(buf, "%x %x", &offset, &value);
 679         if (res != 2) {
 680                 res = -EFAULT;
 681                 goto out_unlock;
 682         }
 683
 684         res = lbs_set_reg(priv, CMD_RF_REG_ACCESS, offset, value);
 685         mdelay(10);
 686
 687         if (!res)
 688                 res = count;
 689 out_unlock:
 690         free_page(addr);
 691         return res;
 692 }
 693
 694 #define FOPS(fread, fwrite) { \
 695         .owner = THIS_MODULE, \
 696         .open = open_file_generic, \
 697         .read = (fread), \
 698         .write = (fwrite), \
 699 }
 700
 701 struct lbs_debugfs_files {
 702         const char *name;
 703         int perm;
 704         struct file_operations fops;
 705 };
 706
 707 static const struct lbs_debugfs_files debugfs_files[] = {
 708         { "info", 0444, FOPS(lbs_dev_info, write_file_dummy), },
 709         { "sleepparams", 0644, FOPS(lbs_sleepparams_read,
 710                                 lbs_sleepparams_write), },
 711         { "hostsleep", 0644, FOPS(lbs_host_sleep_read,
 712                                 lbs_host_sleep_write), },
 713 };
 714
 715 static const struct lbs_debugfs_files debugfs_events_files[] = {
 716         {"low_rssi", 0644, FOPS(lbs_lowrssi_read,
 717                                 lbs_lowrssi_write), },
 718         {"low_snr", 0644, FOPS(lbs_lowsnr_read,
 719                                 lbs_lowsnr_write), },
 720         {"failure_count", 0644, FOPS(lbs_failcount_read,
 721                                 lbs_failcount_write), },
 722         {"beacon_missed", 0644, FOPS(lbs_bcnmiss_read,
 723                                 lbs_bcnmiss_write), },
 724         {"high_rssi", 0644, FOPS(lbs_highrssi_read,
 725                                 lbs_highrssi_write), },
 726         {"high_snr", 0644, FOPS(lbs_highsnr_read,
 727                                 lbs_highsnr_write), },
 728 };
 729
 730 static const struct lbs_debugfs_files debugfs_regs_files[] = {
 731         {"rdmac", 0644, FOPS(lbs_rdmac_read, lbs_rdmac_write), },
 732         {"wrmac", 0600, FOPS(NULL, lbs_wrmac_write), },
 733         {"rdbbp", 0644, FOPS(lbs_rdbbp_read, lbs_rdbbp_write), },
 734         {"wrbbp", 0600, FOPS(NULL, lbs_wrbbp_write), },
 735         {"rdrf", 0644, FOPS(lbs_rdrf_read, lbs_rdrf_write), },
 736         {"wrrf", 0600, FOPS(NULL, lbs_wrrf_write), },
 737 };
 738
 739 void lbs_debugfs_init(void)
 740 {
 741         if (!lbs_dir)
 742                 lbs_dir = debugfs_create_dir("lbs_wireless", NULL);
 743 }
 744
 745 void lbs_debugfs_remove(void)
 746 {
 747         if (lbs_dir)
 748                  debugfs_remove(lbs_dir);
 749 }
 750
 751 void lbs_debugfs_init_one(struct lbs_private *priv, struct net_device *dev)
 752 {
 753         int i;
 754         const struct lbs_debugfs_files *files;
 755         if (!lbs_dir)
 756                 goto exit;
 757
 758         priv->debugfs_dir = debugfs_create_dir(dev->name, lbs_dir);
 759         if (!priv->debugfs_dir)
 760                 goto exit;
 761
 762         for (i=0; i<ARRAY_SIZE(debugfs_files); i++) {
 763                 files = &debugfs_files[i];
 764                 priv->debugfs_files[i] = debugfs_create_file(files->name,
 765                                                              files->perm,
 766                                                              priv->debugfs_dir,
 767                                                              priv,
 768                                                              &files->fops);
 769         }
 770
 771         priv->events_dir = debugfs_create_dir("subscribed_events", priv->debugfs_dir);
 772         if (!priv->events_dir)
 773                 goto exit;
 774
 775         for (i=0; i<ARRAY_SIZE(debugfs_events_files); i++) {
 776                 files = &debugfs_events_files[i];
 777                 priv->debugfs_events_files[i] = debugfs_create_file(files->name,
 778                                                              files->perm,
 779                                                              priv->events_dir,
 780                                                              priv,
 781                                                              &files->fops);
 782         }
 783
 784         priv->regs_dir = debugfs_create_dir("registers", priv->debugfs_dir);
 785         if (!priv->regs_dir)
 786                 goto exit;
 787
 788         for (i=0; i<ARRAY_SIZE(debugfs_regs_files); i++) {
 789                 files = &debugfs_regs_files[i];
 790                 priv->debugfs_regs_files[i] = debugfs_create_file(files->name,
 791                                                              files->perm,
 792                                                              priv->regs_dir,
 793                                                              priv,
 794                                                              &files->fops);
 795         }
 796
 797 #ifdef PROC_DEBUG
 798         lbs_debug_init(priv);
 799 #endif
 800 exit:
 801         return;
 802 }
 803
 804 void lbs_debugfs_remove_one(struct lbs_private *priv)
 805 {
 806         int i;
 807
 808         for(i=0; i<ARRAY_SIZE(debugfs_regs_files); i++)
 809                 debugfs_remove(priv->debugfs_regs_files[i]);
 810
 811         debugfs_remove(priv->regs_dir);
 812
 813         for(i=0; i<ARRAY_SIZE(debugfs_events_files); i++)
 814                 debugfs_remove(priv->debugfs_events_files[i]);
 815
 816         debugfs_remove(priv->events_dir);
 817 #ifdef PROC_DEBUG
 818         debugfs_remove(priv->debugfs_debug);
 819 #endif
 820         for(i=0; i<ARRAY_SIZE(debugfs_files); i++)
 821                 debugfs_remove(priv->debugfs_files[i]);
 822         debugfs_remove(priv->debugfs_dir);
 823 }
 824
 825
 826
 827 /* debug entry */
 828
 829 #ifdef PROC_DEBUG
 830
 831 #define item_size(n)    (FIELD_SIZEOF(struct lbs_private, n))
 832 #define item_addr(n)    (offsetof(struct lbs_private, n))
 833
 834
 835 struct debug_data {
 836         char name[32];
 837         u32 size;
 838         size_t addr;
 839 };
 840
 841 /* To debug any member of struct lbs_private, simply add one line here.
 842  */
 843 static struct debug_data items[] = {
 844         {"psmode", item_size(psmode), item_addr(psmode)},
 845         {"psstate", item_size(psstate), item_addr(psstate)},
 846 };
 847
 848 static int num_of_items = ARRAY_SIZE(items);
 849
 850 /**
 851  *  @brief proc read function
 852  *
 853  *  @param page    pointer to buffer
 854  *  @param s       read data starting position
 855  *  @param off     offset
 856  *  @param cnt     counter
 857  *  @param eof     end of file flag
 858  *  @param data    data to output
 859  *  @return        number of output data
 860  */
 861 static ssize_t lbs_debugfs_read(struct file *file, char __user *userbuf,
 862                         size_t count, loff_t *ppos)
 863 {
 864         int val = 0;
 865         size_t pos = 0;
 866         ssize_t res;
 867         char *p;
 868         int i;
 869         struct debug_data *d;
 870         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 871         char *buf = (char *)addr;
 872         if (!buf)
 873                 return -ENOMEM;
 874
 875         p = buf;
 876
 877         d = file->private_data;
 878
 879         for (i = 0; i < num_of_items; i++) {
 880                 if (d[i].size == 1)
 881                         val = *((u8 *) d[i].addr);
 882                 else if (d[i].size == 2)
 883                         val = *((u16 *) d[i].addr);
 884                 else if (d[i].size == 4)
 885                         val = *((u32 *) d[i].addr);
 886                 else if (d[i].size == 8)
 887                         val = *((u64 *) d[i].addr);
 888
 889                 pos += sprintf(p + pos, "%s=%d\n", d[i].name, val);
 890         }
 891
 892         res = simple_read_from_buffer(userbuf, count, ppos, p, pos);
 893
 894         free_page(addr);
 895         return res;
 896 }
 897
 898 /**
 899  *  @brief proc write function
 900  *
 901  *  @param f       file pointer
 902  *  @param buf     pointer to data buffer
 903  *  @param cnt     data number to write
 904  *  @param data    data to write
 905  *  @return        number of data
 906  */
 907 static ssize_t lbs_debugfs_write(struct file *f, const char __user *buf,
 908                             size_t cnt, loff_t *ppos)
 909 {
 910         int r, i;
 911         char *pdata;
 912         char *p;
 913         char *p0;
 914         char *p1;
 915         char *p2;
 916         struct debug_data *d = f->private_data;
 917
 918         pdata = kmalloc(cnt, GFP_KERNEL);
 919         if (pdata == NULL)
 920                 return 0;
 921
 922         if (copy_from_user(pdata, buf, cnt)) {
 923                 lbs_deb_debugfs("Copy from user failed\n");
 924                 kfree(pdata);
 925                 return 0;
 926         }
 927
 928         p0 = pdata;
 929         for (i = 0; i < num_of_items; i++) {
 930                 do {
 931                         p = strstr(p0, d[i].name);
 932                         if (p == NULL)
 933                                 break;
 934                         p1 = strchr(p, '\n');
 935                         if (p1 == NULL)
 936                                 break;
 937                         p0 = p1++;
 938                         p2 = strchr(p, '=');
 939                         if (!p2)
 940                                 break;
 941                         p2++;
 942                         r = simple_strtoul(p2, NULL, 0);
 943                         if (d[i].size == 1)
 944                                 *((u8 *) d[i].addr) = (u8) r;
 945                         else if (d[i].size == 2)
 946                                 *((u16 *) d[i].addr) = (u16) r;
 947                         else if (d[i].size == 4)
 948                                 *((u32 *) d[i].addr) = (u32) r;
 949                         else if (d[i].size == 8)
 950                                 *((u64 *) d[i].addr) = (u64) r;
 951                         break;
 952                 } while (1);
 953         }
 954         kfree(pdata);
 955
 956         return (ssize_t)cnt;
 957 }
 958
 959 static const struct file_operations lbs_debug_fops = {
 960         .owner = THIS_MODULE,
 961         .open = open_file_generic,
 962         .write = lbs_debugfs_write,
 963         .read = lbs_debugfs_read,
 964 };
 965
 966 /**
 967  *  @brief create debug proc file
 968  *
 969  *  @param priv    pointer struct lbs_private
 970  *  @param dev     pointer net_device
 971  *  @return        N/A
 972  */
 973 static void lbs_debug_init(struct lbs_private *priv)
 974 {
 975         int i;
 976
 977         if (!priv->debugfs_dir)
 978                 return;
 979
 980         for (i = 0; i < num_of_items; i++)
 981                 items[i].addr += (size_t) priv;
 982
 983         priv->debugfs_debug = debugfs_create_file("debug", 0644,
 984                                                   priv->debugfs_dir, &items[0],
 985                                                   &lbs_debug_fops);
 986 }
 987 #endif