drivers/net/wireless/libertas/debugfs.c

   1 #include <linux/dcache.h>
   2 #include <linux/debugfs.h>
   3 #include <linux/delay.h>
   4 #include <linux/hardirq.h>
   5 #include <linux/mm.h>
   6 #include <linux/string.h>
   7 #include <linux/slab.h>
   8
   9 #include "decl.h"
  10 #include "cmd.h"
  11 #include "debugfs.h"
  12
  13 static struct dentry *lbs_dir;
  14 static char *szStates[] = {
  15         "Connected",
  16         "Disconnected"
  17 };
  18
  19 #ifdef PROC_DEBUG
  20 static void lbs_debug_init(struct lbs_private *priv);
  21 #endif
  22
  23 static int open_file_generic(struct inode *inode, struct file *file)
  24 {
  25         file->private_data = inode->i_private;
  26         return 0;
  27 }
  28
  29 static ssize_t write_file_dummy(struct file *file, const char __user *buf,
  30                                 size_t count, loff_t *ppos)
  31 {
  32         return -EINVAL;
  33 }
  34
  35 static const size_t len = PAGE_SIZE;
  36
  37 static ssize_t lbs_dev_info(struct file *file, char __user *userbuf,
  38                                   size_t count, loff_t *ppos)
  39 {
  40         struct lbs_private *priv = file->private_data;
  41         size_t pos = 0;
  42         unsigned long addr = get_zeroed_page(GFP_KERNEL);
  43         char *buf = (char *)addr;
  44         ssize_t res;
  45         if (!buf)
  46                 return -ENOMEM;
  47
  48         pos += snprintf(buf+pos, len-pos, "state = %s\n",
  49                                 szStates[priv->connect_status]);
  50         pos += snprintf(buf+pos, len-pos, "region_code = %02x\n",
  51                                 (u32) priv->regioncode);
  52
  53         res = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
  54
  55         free_page(addr);
  56         return res;
  57 }
  58
  59 static ssize_t lbs_sleepparams_write(struct file *file,
  60                                 const char __user *user_buf, size_t count,
  61                                 loff_t *ppos)
  62 {
  63         struct lbs_private *priv = file->private_data;
  64         ssize_t buf_size, ret;
  65         struct sleep_params sp;
  66         int p1, p2, p3, p4, p5, p6;
  67         unsigned long addr = get_zeroed_page(GFP_KERNEL);
  68         char *buf = (char *)addr;
  69         if (!buf)
  70                 return -ENOMEM;
  71
  72         buf_size = min(count, len - 1);
  73         if (copy_from_user(buf, user_buf, buf_size)) {
  74                 ret = -EFAULT;
  75                 goto out_unlock;
  76         }
  77         ret = sscanf(buf, "%d %d %d %d %d %d", &p1, &p2, &p3, &p4, &p5, &p6);
  78         if (ret != 6) {
  79                 ret = -EINVAL;
  80                 goto out_unlock;
  81         }
  82         sp.sp_error = p1;
  83         sp.sp_offset = p2;
  84         sp.sp_stabletime = p3;
  85         sp.sp_calcontrol = p4;
  86         sp.sp_extsleepclk = p5;
  87         sp.sp_reserved = p6;
  88
  89         ret = lbs_cmd_802_11_sleep_params(priv, CMD_ACT_SET, &sp);
  90         if (!ret)
  91                 ret = count;
  92         else if (ret > 0)
  93                 ret = -EINVAL;
  94
  95 out_unlock:
  96         free_page(addr);
  97         return ret;
  98 }
  99
 100 static ssize_t lbs_sleepparams_read(struct file *file, char __user *userbuf,
 101                                   size_t count, loff_t *ppos)
 102 {
 103         struct lbs_private *priv = file->private_data;
 104         ssize_t ret;
 105         size_t pos = 0;
 106         struct sleep_params sp;
 107         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 108         char *buf = (char *)addr;
 109         if (!buf)
 110                 return -ENOMEM;
 111
 112         ret = lbs_cmd_802_11_sleep_params(priv, CMD_ACT_GET, &sp);
 113         if (ret)
 114                 goto out_unlock;
 115
 116         pos += snprintf(buf, len, "%d %d %d %d %d %d\n", sp.sp_error,
 117                         sp.sp_offset, sp.sp_stabletime,
 118                         sp.sp_calcontrol, sp.sp_extsleepclk,
 119                         sp.sp_reserved);
 120
 121         ret = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
 122
 123 out_unlock:
 124         free_page(addr);
 125         return ret;
 126 }
 127
 128 static ssize_t lbs_host_sleep_write(struct file *file,
 129                                 const char __user *user_buf, size_t count,
 130                                 loff_t *ppos)
 131 {
 132         struct lbs_private *priv = file->private_data;
 133         ssize_t buf_size, ret;
 134         int host_sleep;
 135         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 136         char *buf = (char *)addr;
 137         if (!buf)
 138                 return -ENOMEM;
 139
 140         buf_size = min(count, len - 1);
 141         if (copy_from_user(buf, user_buf, buf_size)) {
 142                 ret = -EFAULT;
 143                 goto out_unlock;
 144         }
 145         ret = sscanf(buf, "%d", &host_sleep);
 146         if (ret != 1) {
 147                 ret = -EINVAL;
 148                 goto out_unlock;
 149         }
 150
 151         if (host_sleep == 0)
 152                 ret = lbs_set_host_sleep(priv, 0);
 153         else if (host_sleep == 1) {
 154                 if (priv->wol_criteria == EHS_REMOVE_WAKEUP) {
 155                         netdev_info(priv->dev,
 156                                     "wake parameters not configured\n");
 157                         ret = -EINVAL;
 158                         goto out_unlock;
 159                 }
 160                 ret = lbs_set_host_sleep(priv, 1);
 161         } else {
 162                 netdev_err(priv->dev, "invalid option\n");
 163                 ret = -EINVAL;
 164         }
 165
 166         if (!ret)
 167                 ret = count;
 168
 169 out_unlock:
 170         free_page(addr);
 171         return ret;
 172 }
 173
 174 static ssize_t lbs_host_sleep_read(struct file *file, char __user *userbuf,
 175                                   size_t count, loff_t *ppos)
 176 {
 177         struct lbs_private *priv = file->private_data;
 178         ssize_t ret;
 179         size_t pos = 0;
 180         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 181         char *buf = (char *)addr;
 182         if (!buf)
 183                 return -ENOMEM;
 184
 185         pos += snprintf(buf, len, "%d\n", priv->is_host_sleep_activated);
 186
 187         ret = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
 188
 189         free_page(addr);
 190         return ret;
 191 }
 192
 193 /*
 194  * When calling CMD_802_11_SUBSCRIBE_EVENT with CMD_ACT_GET, me might
 195  * get a bunch of vendor-specific TLVs (a.k.a. IEs) back from the
 196  * firmware. Here's an example:
 197  *      04 01 02 00 00 00 05 01 02 00 00 00 06 01 02 00
 198  *      00 00 07 01 02 00 3c 00 00 00 00 00 00 00 03 03
 199  *      00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 200  *
 201  * The 04 01 is the TLV type (here TLV_TYPE_RSSI_LOW), 02 00 is the length,
 202  * 00 00 are the data bytes of this TLV. For this TLV, their meaning is
 203  * defined in mrvlietypes_thresholds
 204  *
 205  * This function searches in this TLV data chunk for a given TLV type
 206  * and returns a pointer to the first data byte of the TLV, or to NULL
 207  * if the TLV hasn't been found.
 208  */
 209 static void *lbs_tlv_find(uint16_t tlv_type, const uint8_t *tlv, uint16_t size)
 210 {
 211         struct mrvl_ie_header *tlv_h;
 212         uint16_t length;
 213         ssize_t pos = 0;
 214
 215         while (pos < size) {
 216                 tlv_h = (struct mrvl_ie_header *) tlv;
 217                 if (!tlv_h->len)
 218                         return NULL;
 219                 if (tlv_h->type == cpu_to_le16(tlv_type))
 220                         return tlv_h;
 221                 length = le16_to_cpu(tlv_h->len) + sizeof(*tlv_h);
 222                 pos += length;
 223                 tlv += length;
 224         }
 225         return NULL;
 226 }
 227
 228
 229 static ssize_t lbs_threshold_read(uint16_t tlv_type, uint16_t event_mask,
 230                                   struct file *file, char __user *userbuf,
 231                                   size_t count, loff_t *ppos)
 232 {
 233         struct cmd_ds_802_11_subscribe_event *subscribed;
 234         struct mrvl_ie_thresholds *got;
 235         struct lbs_private *priv = file->private_data;
 236         ssize_t ret = 0;
 237         size_t pos = 0;
 238         char *buf;
 239         u8 value;
 240         u8 freq;
 241         int events = 0;
 242
 243         buf = (char *)get_zeroed_page(GFP_KERNEL);
 244         if (!buf)
 245                 return -ENOMEM;
 246
 247         subscribed = kzalloc(sizeof(*subscribed), GFP_KERNEL);
 248         if (!subscribed) {
 249                 ret = -ENOMEM;
 250                 goto out_page;
 251         }
 252
 253         subscribed->hdr.size = cpu_to_le16(sizeof(*subscribed));
 254         subscribed->action = cpu_to_le16(CMD_ACT_GET);
 255
 256         ret = lbs_cmd_with_response(priv, CMD_802_11_SUBSCRIBE_EVENT, subscribed);
 257         if (ret)
 258                 goto out_cmd;
 259
 260         got = lbs_tlv_find(tlv_type, subscribed->tlv, sizeof(subscribed->tlv));
 261         if (got) {
 262                 value = got->value;
 263                 freq  = got->freq;
 264                 events = le16_to_cpu(subscribed->events);
 265
 266                 pos += snprintf(buf, len, "%d %d %d\n", value, freq,
 267                                 !!(events & event_mask));
 268         }
 269
 270         ret = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
 271
 272  out_cmd:
 273         kfree(subscribed);
 274
 275  out_page:
 276         free_page((unsigned long)buf);
 277         return ret;
 278 }
 279
 280
 281 static ssize_t lbs_threshold_write(uint16_t tlv_type, uint16_t event_mask,
 282                                    struct file *file,
 283                                    const char __user *userbuf, size_t count,
 284                                    loff_t *ppos)
 285 {
 286         struct cmd_ds_802_11_subscribe_event *events;
 287         struct mrvl_ie_thresholds *tlv;
 288         struct lbs_private *priv = file->private_data;
 289         ssize_t buf_size;
 290         int value, freq, new_mask;
 291         uint16_t curr_mask;
 292         char *buf;
 293         int ret;
 294
 295         buf = (char *)get_zeroed_page(GFP_KERNEL);
 296         if (!buf)
 297                 return -ENOMEM;
 298
 299         buf_size = min(count, len - 1);
 300         if (copy_from_user(buf, userbuf, buf_size)) {
 301                 ret = -EFAULT;
 302                 goto out_page;
 303         }
 304         ret = sscanf(buf, "%d %d %d", &value, &freq, &new_mask);
 305         if (ret != 3) {
 306                 ret = -EINVAL;
 307                 goto out_page;
 308         }
 309         events = kzalloc(sizeof(*events), GFP_KERNEL);
 310         if (!events) {
 311                 ret = -ENOMEM;
 312                 goto out_page;
 313         }
 314
 315         events->hdr.size = cpu_to_le16(sizeof(*events));
 316         events->action = cpu_to_le16(CMD_ACT_GET);
 317
 318         ret = lbs_cmd_with_response(priv, CMD_802_11_SUBSCRIBE_EVENT, events);
 319         if (ret)
 320                 goto out_events;
 321
 322         curr_mask = le16_to_cpu(events->events);
 323
 324         if (new_mask)
 325                 new_mask = curr_mask | event_mask;
 326         else
 327                 new_mask = curr_mask & ~event_mask;
 328
 329         /* Now everything is set and we can send stuff down to the firmware */
 330
 331         tlv = (void *)events->tlv;
 332
 333         events->action = cpu_to_le16(CMD_ACT_SET);
 334         events->events = cpu_to_le16(new_mask);
 335         tlv->header.type = cpu_to_le16(tlv_type);
 336         tlv->header.len = cpu_to_le16(sizeof(*tlv) - sizeof(tlv->header));
 337         tlv->value = value;
 338         if (tlv_type != TLV_TYPE_BCNMISS)
 339                 tlv->freq = freq;
 340
 341         /* The command header, the action, the event mask, and one TLV */
 342         events->hdr.size = cpu_to_le16(sizeof(events->hdr) + 4 + sizeof(*tlv));
 343
 344         ret = lbs_cmd_with_response(priv, CMD_802_11_SUBSCRIBE_EVENT, events);
 345
 346         if (!ret)
 347                 ret = count;
 348  out_events:
 349         kfree(events);
 350  out_page:
 351         free_page((unsigned long)buf);
 352         return ret;
 353 }
 354
 355
 356 static ssize_t lbs_lowrssi_read(struct file *file, char __user *userbuf,
 357                                 size_t count, loff_t *ppos)
 358 {
 359         return lbs_threshold_read(TLV_TYPE_RSSI_LOW, CMD_SUBSCRIBE_RSSI_LOW,
 360                                   file, userbuf, count, ppos);
 361 }
 362
 363
 364 static ssize_t lbs_lowrssi_write(struct file *file, const char __user *userbuf,
 365                                  size_t count, loff_t *ppos)
 366 {
 367         return lbs_threshold_write(TLV_TYPE_RSSI_LOW, CMD_SUBSCRIBE_RSSI_LOW,
 368                                    file, userbuf, count, ppos);
 369 }
 370
 371
 372 static ssize_t lbs_lowsnr_read(struct file *file, char __user *userbuf,
 373                                size_t count, loff_t *ppos)
 374 {
 375         return lbs_threshold_read(TLV_TYPE_SNR_LOW, CMD_SUBSCRIBE_SNR_LOW,
 376                                   file, userbuf, count, ppos);
 377 }
 378
 379
 380 static ssize_t lbs_lowsnr_write(struct file *file, const char __user *userbuf,
 381                                 size_t count, loff_t *ppos)
 382 {
 383         return lbs_threshold_write(TLV_TYPE_SNR_LOW, CMD_SUBSCRIBE_SNR_LOW,
 384                                    file, userbuf, count, ppos);
 385 }
 386
 387
 388 static ssize_t lbs_failcount_read(struct file *file, char __user *userbuf,
 389                                   size_t count, loff_t *ppos)
 390 {
 391         return lbs_threshold_read(TLV_TYPE_FAILCOUNT, CMD_SUBSCRIBE_FAILCOUNT,
 392                                   file, userbuf, count, ppos);
 393 }
 394
 395
 396 static ssize_t lbs_failcount_write(struct file *file, const char __user *userbuf,
 397                                    size_t count, loff_t *ppos)
 398 {
 399         return lbs_threshold_write(TLV_TYPE_FAILCOUNT, CMD_SUBSCRIBE_FAILCOUNT,
 400                                    file, userbuf, count, ppos);
 401 }
 402
 403
 404 static ssize_t lbs_highrssi_read(struct file *file, char __user *userbuf,
 405                                  size_t count, loff_t *ppos)
 406 {
 407         return lbs_threshold_read(TLV_TYPE_RSSI_HIGH, CMD_SUBSCRIBE_RSSI_HIGH,
 408                                   file, userbuf, count, ppos);
 409 }
 410
 411
 412 static ssize_t lbs_highrssi_write(struct file *file, const char __user *userbuf,
 413                                   size_t count, loff_t *ppos)
 414 {
 415         return lbs_threshold_write(TLV_TYPE_RSSI_HIGH, CMD_SUBSCRIBE_RSSI_HIGH,
 416                                    file, userbuf, count, ppos);
 417 }
 418
 419
 420 static ssize_t lbs_highsnr_read(struct file *file, char __user *userbuf,
 421                                 size_t count, loff_t *ppos)
 422 {
 423         return lbs_threshold_read(TLV_TYPE_SNR_HIGH, CMD_SUBSCRIBE_SNR_HIGH,
 424                                   file, userbuf, count, ppos);
 425 }
 426
 427
 428 static ssize_t lbs_highsnr_write(struct file *file, const char __user *userbuf,
 429                                  size_t count, loff_t *ppos)
 430 {
 431         return lbs_threshold_write(TLV_TYPE_SNR_HIGH, CMD_SUBSCRIBE_SNR_HIGH,
 432                                    file, userbuf, count, ppos);
 433 }
 434
 435 static ssize_t lbs_bcnmiss_read(struct file *file, char __user *userbuf,
 436                                 size_t count, loff_t *ppos)
 437 {
 438         return lbs_threshold_read(TLV_TYPE_BCNMISS, CMD_SUBSCRIBE_BCNMISS,
 439                                   file, userbuf, count, ppos);
 440 }
 441
 442
 443 static ssize_t lbs_bcnmiss_write(struct file *file, const char __user *userbuf,
 444                                  size_t count, loff_t *ppos)
 445 {
 446         return lbs_threshold_write(TLV_TYPE_BCNMISS, CMD_SUBSCRIBE_BCNMISS,
 447                                    file, userbuf, count, ppos);
 448 }
 449
 450
 451 static ssize_t lbs_rdmac_read(struct file *file, char __user *userbuf,
 452                                   size_t count, loff_t *ppos)
 453 {
 454         struct lbs_private *priv = file->private_data;
 455         ssize_t pos = 0;
 456         int ret;
 457         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 458         char *buf = (char *)addr;
 459         u32 val = 0;
 460
 461         if (!buf)
 462                 return -ENOMEM;
 463
 464         ret = lbs_get_reg(priv, CMD_MAC_REG_ACCESS, priv->mac_offset, &val);
 465         mdelay(10);
 466         if (!ret) {
 467                 pos = snprintf(buf, len, "MAC[0x%x] = 0x%08x\n",
 468                                 priv->mac_offset, val);
 469                 ret = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
 470         }
 471         free_page(addr);
 472         return ret;
 473 }
 474
 475 static ssize_t lbs_rdmac_write(struct file *file,
 476                                     const char __user *userbuf,
 477                                     size_t count, loff_t *ppos)
 478 {
 479         struct lbs_private *priv = file->private_data;
 480         ssize_t res, buf_size;
 481         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 482         char *buf = (char *)addr;
 483         if (!buf)
 484                 return -ENOMEM;
 485
 486         buf_size = min(count, len - 1);
 487         if (copy_from_user(buf, userbuf, buf_size)) {
 488                 res = -EFAULT;
 489                 goto out_unlock;
 490         }
 491         priv->mac_offset = simple_strtoul((char *)buf, NULL, 16);
 492         res = count;
 493 out_unlock:
 494         free_page(addr);
 495         return res;
 496 }
 497
 498 static ssize_t lbs_wrmac_write(struct file *file,
 499                                     const char __user *userbuf,
 500                                     size_t count, loff_t *ppos)
 501 {
 502
 503         struct lbs_private *priv = file->private_data;
 504         ssize_t res, buf_size;
 505         u32 offset, value;
 506         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 507         char *buf = (char *)addr;
 508         if (!buf)
 509                 return -ENOMEM;
 510
 511         buf_size = min(count, len - 1);
 512         if (copy_from_user(buf, userbuf, buf_size)) {
 513                 res = -EFAULT;
 514                 goto out_unlock;
 515         }
 516         res = sscanf(buf, "%x %x", &offset, &value);
 517         if (res != 2) {
 518                 res = -EFAULT;
 519                 goto out_unlock;
 520         }
 521
 522         res = lbs_set_reg(priv, CMD_MAC_REG_ACCESS, offset, value);
 523         mdelay(10);
 524
 525         if (!res)
 526                 res = count;
 527 out_unlock:
 528         free_page(addr);
 529         return res;
 530 }
 531
 532 static ssize_t lbs_rdbbp_read(struct file *file, char __user *userbuf,
 533                                   size_t count, loff_t *ppos)
 534 {
 535         struct lbs_private *priv = file->private_data;
 536         ssize_t pos = 0;
 537         int ret;
 538         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 539         char *buf = (char *)addr;
 540         u32 val;
 541
 542         if (!buf)
 543                 return -ENOMEM;
 544
 545         ret = lbs_get_reg(priv, CMD_BBP_REG_ACCESS, priv->bbp_offset, &val);
 546         mdelay(10);
 547         if (!ret) {
 548                 pos = snprintf(buf, len, "BBP[0x%x] = 0x%08x\n",
 549                                 priv->bbp_offset, val);
 550                 ret = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
 551         }
 552         free_page(addr);
 553
 554         return ret;
 555 }
 556
 557 static ssize_t lbs_rdbbp_write(struct file *file,
 558                                     const char __user *userbuf,
 559                                     size_t count, loff_t *ppos)
 560 {
 561         struct lbs_private *priv = file->private_data;
 562         ssize_t res, buf_size;
 563         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 564         char *buf = (char *)addr;
 565         if (!buf)
 566                 return -ENOMEM;
 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         priv->bbp_offset = simple_strtoul((char *)buf, NULL, 16);
 574         res = count;
 575 out_unlock:
 576         free_page(addr);
 577         return res;
 578 }
 579
 580 static ssize_t lbs_wrbbp_write(struct file *file,
 581                                     const char __user *userbuf,
 582                                     size_t count, loff_t *ppos)
 583 {
 584
 585         struct lbs_private *priv = file->private_data;
 586         ssize_t res, buf_size;
 587         u32 offset, value;
 588         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 589         char *buf = (char *)addr;
 590         if (!buf)
 591                 return -ENOMEM;
 592
 593         buf_size = min(count, len - 1);
 594         if (copy_from_user(buf, userbuf, buf_size)) {
 595                 res = -EFAULT;
 596                 goto out_unlock;
 597         }
 598         res = sscanf(buf, "%x %x", &offset, &value);
 599         if (res != 2) {
 600                 res = -EFAULT;
 601                 goto out_unlock;
 602         }
 603
 604         res = lbs_set_reg(priv, CMD_BBP_REG_ACCESS, offset, value);
 605         mdelay(10);
 606
 607         if (!res)
 608                 res = count;
 609 out_unlock:
 610         free_page(addr);
 611         return res;
 612 }
 613
 614 static ssize_t lbs_rdrf_read(struct file *file, char __user *userbuf,
 615                                   size_t count, loff_t *ppos)
 616 {
 617         struct lbs_private *priv = file->private_data;
 618         ssize_t pos = 0;
 619         int ret;
 620         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 621         char *buf = (char *)addr;
 622         u32 val;
 623
 624         if (!buf)
 625                 return -ENOMEM;
 626
 627         ret = lbs_get_reg(priv, CMD_RF_REG_ACCESS, priv->rf_offset, &val);
 628         mdelay(10);
 629         if (!ret) {
 630                 pos = snprintf(buf, len, "RF[0x%x] = 0x%08x\n",
 631                                 priv->rf_offset, val);
 632                 ret = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
 633         }
 634         free_page(addr);
 635
 636         return ret;
 637 }
 638
 639 static ssize_t lbs_rdrf_write(struct file *file,
 640                                     const char __user *userbuf,
 641                                     size_t count, loff_t *ppos)
 642 {
 643         struct lbs_private *priv = file->private_data;
 644         ssize_t res, buf_size;
 645         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 646         char *buf = (char *)addr;
 647         if (!buf)
 648                 return -ENOMEM;
 649
 650         buf_size = min(count, len - 1);
 651         if (copy_from_user(buf, userbuf, buf_size)) {
 652                 res = -EFAULT;
 653                 goto out_unlock;
 654         }
 655         priv->rf_offset = simple_strtoul(buf, NULL, 16);
 656         res = count;
 657 out_unlock:
 658         free_page(addr);
 659         return res;
 660 }
 661
 662 static ssize_t lbs_wrrf_write(struct file *file,
 663                                     const char __user *userbuf,
 664                                     size_t count, loff_t *ppos)
 665 {
 666
 667         struct lbs_private *priv = file->private_data;
 668         ssize_t res, buf_size;
 669         u32 offset, value;
 670         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 671         char *buf = (char *)addr;
 672         if (!buf)
 673                 return -ENOMEM;
 674
 675         buf_size = min(count, len - 1);
 676         if (copy_from_user(buf, userbuf, buf_size)) {
 677                 res = -EFAULT;
 678                 goto out_unlock;
 679         }
 680         res = sscanf(buf, "%x %x", &offset, &value);
 681         if (res != 2) {
 682                 res = -EFAULT;
 683                 goto out_unlock;
 684         }
 685
 686         res = lbs_set_reg(priv, CMD_RF_REG_ACCESS, offset, value);
 687         mdelay(10);
 688
 689         if (!res)
 690                 res = count;
 691 out_unlock:
 692         free_page(addr);
 693         return res;
 694 }
 695
 696 #define FOPS(fread, fwrite) { \
 697         .owner = THIS_MODULE, \
 698         .open = open_file_generic, \
 699         .read = (fread), \
 700         .write = (fwrite), \
 701         .llseek = generic_file_llseek, \
 702 }
 703
 704 struct lbs_debugfs_files {
 705         const char *name;
 706         int perm;
 707         struct file_operations fops;
 708 };
 709
 710 static const struct lbs_debugfs_files debugfs_files[] = {
 711         { "info", 0444, FOPS(lbs_dev_info, write_file_dummy), },
 712         { "sleepparams", 0644, FOPS(lbs_sleepparams_read,
 713                                 lbs_sleepparams_write), },
 714         { "hostsleep", 0644, FOPS(lbs_host_sleep_read,
 715                                 lbs_host_sleep_write), },
 716 };
 717
 718 static const struct lbs_debugfs_files debugfs_events_files[] = {
 719         {"low_rssi", 0644, FOPS(lbs_lowrssi_read,
 720                                 lbs_lowrssi_write), },
 721         {"low_snr", 0644, FOPS(lbs_lowsnr_read,
 722                                 lbs_lowsnr_write), },
 723         {"failure_count", 0644, FOPS(lbs_failcount_read,
 724                                 lbs_failcount_write), },
 725         {"beacon_missed", 0644, FOPS(lbs_bcnmiss_read,
 726                                 lbs_bcnmiss_write), },
 727         {"high_rssi", 0644, FOPS(lbs_highrssi_read,
 728                                 lbs_highrssi_write), },
 729         {"high_snr", 0644, FOPS(lbs_highsnr_read,
 730                                 lbs_highsnr_write), },
 731 };
 732
 733 static const struct lbs_debugfs_files debugfs_regs_files[] = {
 734         {"rdmac", 0644, FOPS(lbs_rdmac_read, lbs_rdmac_write), },
 735         {"wrmac", 0600, FOPS(NULL, lbs_wrmac_write), },
 736         {"rdbbp", 0644, FOPS(lbs_rdbbp_read, lbs_rdbbp_write), },
 737         {"wrbbp", 0600, FOPS(NULL, lbs_wrbbp_write), },
 738         {"rdrf", 0644, FOPS(lbs_rdrf_read, lbs_rdrf_write), },
 739         {"wrrf", 0600, FOPS(NULL, lbs_wrrf_write), },
 740 };
 741
 742 void lbs_debugfs_init(void)
 743 {
 744         if (!lbs_dir)
 745                 lbs_dir = debugfs_create_dir("lbs_wireless", NULL);
 746 }
 747
 748 void lbs_debugfs_remove(void)
 749 {
 750         if (lbs_dir)
 751                  debugfs_remove(lbs_dir);
 752 }
 753
 754 void lbs_debugfs_init_one(struct lbs_private *priv, struct net_device *dev)
 755 {
 756         int i;
 757         const struct lbs_debugfs_files *files;
 758         if (!lbs_dir)
 759                 goto exit;
 760
 761         priv->debugfs_dir = debugfs_create_dir(dev->name, lbs_dir);
 762         if (!priv->debugfs_dir)
 763                 goto exit;
 764
 765         for (i=0; i<ARRAY_SIZE(debugfs_files); i++) {
 766                 files = &debugfs_files[i];
 767                 priv->debugfs_files[i] = debugfs_create_file(files->name,
 768                                                              files->perm,
 769                                                              priv->debugfs_dir,
 770                                                              priv,
 771                                                              &files->fops);
 772         }
 773
 774         priv->events_dir = debugfs_create_dir("subscribed_events", priv->debugfs_dir);
 775         if (!priv->events_dir)
 776                 goto exit;
 777
 778         for (i=0; i<ARRAY_SIZE(debugfs_events_files); i++) {
 779                 files = &debugfs_events_files[i];
 780                 priv->debugfs_events_files[i] = debugfs_create_file(files->name,
 781                                                              files->perm,
 782                                                              priv->events_dir,
 783                                                              priv,
 784                                                              &files->fops);
 785         }
 786
 787         priv->regs_dir = debugfs_create_dir("registers", priv->debugfs_dir);
 788         if (!priv->regs_dir)
 789                 goto exit;
 790
 791         for (i=0; i<ARRAY_SIZE(debugfs_regs_files); i++) {
 792                 files = &debugfs_regs_files[i];
 793                 priv->debugfs_regs_files[i] = debugfs_create_file(files->name,
 794                                                              files->perm,
 795                                                              priv->regs_dir,
 796                                                              priv,
 797                                                              &files->fops);
 798         }
 799
 800 #ifdef PROC_DEBUG
 801         lbs_debug_init(priv);
 802 #endif
 803 exit:
 804         return;
 805 }
 806
 807 void lbs_debugfs_remove_one(struct lbs_private *priv)
 808 {
 809         int i;
 810
 811         for(i=0; i<ARRAY_SIZE(debugfs_regs_files); i++)
 812                 debugfs_remove(priv->debugfs_regs_files[i]);
 813
 814         debugfs_remove(priv->regs_dir);
 815
 816         for(i=0; i<ARRAY_SIZE(debugfs_events_files); i++)
 817                 debugfs_remove(priv->debugfs_events_files[i]);
 818
 819         debugfs_remove(priv->events_dir);
 820 #ifdef PROC_DEBUG
 821         debugfs_remove(priv->debugfs_debug);
 822 #endif
 823         for(i=0; i<ARRAY_SIZE(debugfs_files); i++)
 824                 debugfs_remove(priv->debugfs_files[i]);
 825         debugfs_remove(priv->debugfs_dir);
 826 }
 827
 828
 829
 830 /* debug entry */
 831
 832 #ifdef PROC_DEBUG
 833
 834 #define item_size(n)    (FIELD_SIZEOF(struct lbs_private, n))
 835 #define item_addr(n)    (offsetof(struct lbs_private, n))
 836
 837
 838 struct debug_data {
 839         char name[32];
 840         u32 size;
 841         size_t addr;
 842 };
 843
 844 /* To debug any member of struct lbs_private, simply add one line here.
 845  */
 846 static struct debug_data items[] = {
 847         {"psmode", item_size(psmode), item_addr(psmode)},
 848         {"psstate", item_size(psstate), item_addr(psstate)},
 849 };
 850
 851 static int num_of_items = ARRAY_SIZE(items);
 852
 853 /**
 854  * lbs_debugfs_read - proc read function
 855  *
 856  * @file:       file to read
 857  * @userbuf:    pointer to buffer
 858  * @count:      number of bytes to read
 859  * @ppos:       read data starting position
 860  *
 861  * returns:     amount of data read or negative error code
 862  */
 863 static ssize_t lbs_debugfs_read(struct file *file, char __user *userbuf,
 864                         size_t count, loff_t *ppos)
 865 {
 866         int val = 0;
 867         size_t pos = 0;
 868         ssize_t res;
 869         char *p;
 870         int i;
 871         struct debug_data *d;
 872         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 873         char *buf = (char *)addr;
 874         if (!buf)
 875                 return -ENOMEM;
 876
 877         p = buf;
 878
 879         d = file->private_data;
 880
 881         for (i = 0; i < num_of_items; i++) {
 882                 if (d[i].size == 1)
 883                         val = *((u8 *) d[i].addr);
 884                 else if (d[i].size == 2)
 885                         val = *((u16 *) d[i].addr);
 886                 else if (d[i].size == 4)
 887                         val = *((u32 *) d[i].addr);
 888                 else if (d[i].size == 8)
 889                         val = *((u64 *) d[i].addr);
 890
 891                 pos += sprintf(p + pos, "%s=%d\n", d[i].name, val);
 892         }
 893
 894         res = simple_read_from_buffer(userbuf, count, ppos, p, pos);
 895
 896         free_page(addr);
 897         return res;
 898 }
 899
 900 /**
 901  * lbs_debugfs_write - proc write function
 902  *
 903  * @f:          file pointer
 904  * @buf:        pointer to data buffer
 905  * @cnt:        data number to write
 906  * @ppos:       file position
 907  *
 908  * returns:     amount of data written
 909  */
 910 static ssize_t lbs_debugfs_write(struct file *f, const char __user *buf,
 911                             size_t cnt, loff_t *ppos)
 912 {
 913         int r, i;
 914         char *pdata;
 915         char *p;
 916         char *p0;
 917         char *p1;
 918         char *p2;
 919         struct debug_data *d = f->private_data;
 920
 921         pdata = kmalloc(cnt, GFP_KERNEL);
 922         if (pdata == NULL)
 923                 return 0;
 924
 925         if (copy_from_user(pdata, buf, cnt)) {
 926                 lbs_deb_debugfs("Copy from user failed\n");
 927                 kfree(pdata);
 928                 return 0;
 929         }
 930
 931         p0 = pdata;
 932         for (i = 0; i < num_of_items; i++) {
 933                 do {
 934                         p = strstr(p0, d[i].name);
 935                         if (p == NULL)
 936                                 break;
 937                         p1 = strchr(p, '\n');
 938                         if (p1 == NULL)
 939                                 break;
 940                         p0 = p1++;
 941                         p2 = strchr(p, '=');
 942                         if (!p2)
 943                                 break;
 944                         p2++;
 945                         r = simple_strtoul(p2, NULL, 0);
 946                         if (d[i].size == 1)
 947                                 *((u8 *) d[i].addr) = (u8) r;
 948                         else if (d[i].size == 2)
 949                                 *((u16 *) d[i].addr) = (u16) r;
 950                         else if (d[i].size == 4)
 951                                 *((u32 *) d[i].addr) = (u32) r;
 952                         else if (d[i].size == 8)
 953                                 *((u64 *) d[i].addr) = (u64) r;
 954                         break;
 955                 } while (1);
 956         }
 957         kfree(pdata);
 958
 959         return (ssize_t)cnt;
 960 }
 961
 962 static const struct file_operations lbs_debug_fops = {
 963         .owner = THIS_MODULE,
 964         .open = open_file_generic,
 965         .write = lbs_debugfs_write,
 966         .read = lbs_debugfs_read,
 967         .llseek = default_llseek,
 968 };
 969
 970 /**
 971  * lbs_debug_init - create debug proc file
 972  *
 973  * @priv:       pointer to &struct lbs_private
 974  *
 975  * returns:     N/A
 976  */
 977 static void lbs_debug_init(struct lbs_private *priv)
 978 {
 979         int i;
 980
 981         if (!priv->debugfs_dir)
 982                 return;
 983
 984         for (i = 0; i < num_of_items; i++)
 985                 items[i].addr += (size_t) priv;
 986
 987         priv->debugfs_debug = debugfs_create_file("debug", 0644,
 988                                                   priv->debugfs_dir, &items[0],
 989                                                   &lbs_debug_fops);
 990 }
 991 #endif