drivers/net/wireless/intel/iwlwifi/dvm/debugfs.c

   1 /******************************************************************************
   2  *
   3  * GPL LICENSE SUMMARY
   4  *
   5  * Copyright(c) 2008 - 2014 Intel Corporation. All rights reserved.
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of version 2 of the GNU General Public License as
   9  * published by the Free Software Foundation.
  10  *
  11  * This program is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
  19  * USA
  20  *
  21  * The full GNU General Public License is included in this distribution
  22  * in the file called COPYING.
  23  *
  24  * Contact Information:
  25  *  Intel Linux Wireless <linuxwifi@intel.com>
  26  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  27  *****************************************************************************/
  28
  29 #include <linux/slab.h>
  30 #include <linux/kernel.h>
  31 #include <linux/module.h>
  32 #include <linux/debugfs.h>
  33 #include <linux/ieee80211.h>
  34 #include <net/mac80211.h>
  35
  36 #include "iwl-debug.h"
  37 #include "iwl-trans.h"
  38 #include "iwl-io.h"
  39 #include "dev.h"
  40 #include "agn.h"
  41
  42 /* create and remove of files */
  43 #define DEBUGFS_ADD_FILE(name, parent, mode) do {                       \
  44         if (!debugfs_create_file(#name, mode, parent, priv,             \
  45                                  &iwl_dbgfs_##name##_ops))              \
  46                 goto err;                                               \
  47 } while (0)
  48
  49 #define DEBUGFS_ADD_BOOL(name, parent, ptr) do {                        \
  50         struct dentry *__tmp;                                           \
  51         __tmp = debugfs_create_bool(#name, 0600, parent, ptr);          \
  52         if (IS_ERR(__tmp) || !__tmp)                                    \
  53                 goto err;                                               \
  54 } while (0)
  55
  56 #define DEBUGFS_ADD_X32(name, parent, ptr) do {                         \
  57         struct dentry *__tmp;                                           \
  58         __tmp = debugfs_create_x32(#name, 0600, parent, ptr);           \
  59         if (IS_ERR(__tmp) || !__tmp)                                    \
  60                 goto err;                                               \
  61 } while (0)
  62
  63 #define DEBUGFS_ADD_U32(name, parent, ptr, mode) do {                   \
  64         struct dentry *__tmp;                                           \
  65         __tmp = debugfs_create_u32(#name, mode,                         \
  66                                    parent, ptr);                        \
  67         if (IS_ERR(__tmp) || !__tmp)                                    \
  68                 goto err;                                               \
  69 } while (0)
  70
  71 /* file operation */
  72 #define DEBUGFS_READ_FILE_OPS(name)                                     \
  73 static const struct file_operations iwl_dbgfs_##name##_ops = {          \
  74         .read = iwl_dbgfs_##name##_read,                                \
  75         .open = simple_open,                                            \
  76         .llseek = generic_file_llseek,                                  \
  77 };
  78
  79 #define DEBUGFS_WRITE_FILE_OPS(name)                                    \
  80 static const struct file_operations iwl_dbgfs_##name##_ops = {          \
  81         .write = iwl_dbgfs_##name##_write,                              \
  82         .open = simple_open,                                            \
  83         .llseek = generic_file_llseek,                                  \
  84 };
  85
  86
  87 #define DEBUGFS_READ_WRITE_FILE_OPS(name)                               \
  88 static const struct file_operations iwl_dbgfs_##name##_ops = {          \
  89         .write = iwl_dbgfs_##name##_write,                              \
  90         .read = iwl_dbgfs_##name##_read,                                \
  91         .open = simple_open,                                            \
  92         .llseek = generic_file_llseek,                                  \
  93 };
  94
  95 static ssize_t iwl_dbgfs_sram_read(struct file *file,
  96                                         char __user *user_buf,
  97                                         size_t count, loff_t *ppos)
  98 {
  99         u32 val = 0;
 100         char *buf;
 101         ssize_t ret;
 102         int i = 0;
 103         bool device_format = false;
 104         int offset = 0;
 105         int len = 0;
 106         int pos = 0;
 107         int sram;
 108         struct iwl_priv *priv = file->private_data;
 109         const struct fw_img *img;
 110         size_t bufsz;
 111
 112         if (!iwl_is_ready_rf(priv))
 113                 return -EAGAIN;
 114
 115         /* default is to dump the entire data segment */
 116         if (!priv->dbgfs_sram_offset && !priv->dbgfs_sram_len) {
 117                 priv->dbgfs_sram_offset = 0x800000;
 118                 if (!priv->ucode_loaded)
 119                         return -EINVAL;
 120                 img = &priv->fw->img[priv->cur_ucode];
 121                 priv->dbgfs_sram_len = img->sec[IWL_UCODE_SECTION_DATA].len;
 122         }
 123         len = priv->dbgfs_sram_len;
 124
 125         if (len == -4) {
 126                 device_format = true;
 127                 len = 4;
 128         }
 129
 130         bufsz =  50 + len * 4;
 131         buf = kmalloc(bufsz, GFP_KERNEL);
 132         if (!buf)
 133                 return -ENOMEM;
 134
 135         pos += scnprintf(buf + pos, bufsz - pos, "sram_len: 0x%x\n",
 136                          len);
 137         pos += scnprintf(buf + pos, bufsz - pos, "sram_offset: 0x%x\n",
 138                         priv->dbgfs_sram_offset);
 139
 140         /* adjust sram address since reads are only on even u32 boundaries */
 141         offset = priv->dbgfs_sram_offset & 0x3;
 142         sram = priv->dbgfs_sram_offset & ~0x3;
 143
 144         /* read the first u32 from sram */
 145         val = iwl_trans_read_mem32(priv->trans, sram);
 146
 147         for (; len; len--) {
 148                 /* put the address at the start of every line */
 149                 if (i == 0)
 150                         pos += scnprintf(buf + pos, bufsz - pos,
 151                                 "%08X: ", sram + offset);
 152
 153                 if (device_format)
 154                         pos += scnprintf(buf + pos, bufsz - pos,
 155                                 "%02x", (val >> (8 * (3 - offset))) & 0xff);
 156                 else
 157                         pos += scnprintf(buf + pos, bufsz - pos,
 158                                 "%02x ", (val >> (8 * offset)) & 0xff);
 159
 160                 /* if all bytes processed, read the next u32 from sram */
 161                 if (++offset == 4) {
 162                         sram += 4;
 163                         offset = 0;
 164                         val = iwl_trans_read_mem32(priv->trans, sram);
 165                 }
 166
 167                 /* put in extra spaces and split lines for human readability */
 168                 if (++i == 16) {
 169                         i = 0;
 170                         pos += scnprintf(buf + pos, bufsz - pos, "\n");
 171                 } else if (!(i & 7)) {
 172                         pos += scnprintf(buf + pos, bufsz - pos, "   ");
 173                 } else if (!(i & 3)) {
 174                         pos += scnprintf(buf + pos, bufsz - pos, " ");
 175                 }
 176         }
 177         if (i)
 178                 pos += scnprintf(buf + pos, bufsz - pos, "\n");
 179
 180         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 181         kfree(buf);
 182         return ret;
 183 }
 184
 185 static ssize_t iwl_dbgfs_sram_write(struct file *file,
 186                                         const char __user *user_buf,
 187                                         size_t count, loff_t *ppos)
 188 {
 189         struct iwl_priv *priv = file->private_data;
 190         char buf[64];
 191         int buf_size;
 192         u32 offset, len;
 193
 194         memset(buf, 0, sizeof(buf));
 195         buf_size = min(count, sizeof(buf) -  1);
 196         if (copy_from_user(buf, user_buf, buf_size))
 197                 return -EFAULT;
 198
 199         if (sscanf(buf, "%x,%x", &offset, &len) == 2) {
 200                 priv->dbgfs_sram_offset = offset;
 201                 priv->dbgfs_sram_len = len;
 202         } else if (sscanf(buf, "%x", &offset) == 1) {
 203                 priv->dbgfs_sram_offset = offset;
 204                 priv->dbgfs_sram_len = -4;
 205         } else {
 206                 priv->dbgfs_sram_offset = 0;
 207                 priv->dbgfs_sram_len = 0;
 208         }
 209
 210         return count;
 211 }
 212
 213 static ssize_t iwl_dbgfs_wowlan_sram_read(struct file *file,
 214                                           char __user *user_buf,
 215                                           size_t count, loff_t *ppos)
 216 {
 217         struct iwl_priv *priv = file->private_data;
 218         const struct fw_img *img = &priv->fw->img[IWL_UCODE_WOWLAN];
 219
 220         if (!priv->wowlan_sram)
 221                 return -ENODATA;
 222
 223         return simple_read_from_buffer(user_buf, count, ppos,
 224                                        priv->wowlan_sram,
 225                                        img->sec[IWL_UCODE_SECTION_DATA].len);
 226 }
 227 static ssize_t iwl_dbgfs_stations_read(struct file *file, char __user *user_buf,
 228                                         size_t count, loff_t *ppos)
 229 {
 230         struct iwl_priv *priv = file->private_data;
 231         struct iwl_station_entry *station;
 232         struct iwl_tid_data *tid_data;
 233         char *buf;
 234         int i, j, pos = 0;
 235         ssize_t ret;
 236         /* Add 30 for initial string */
 237         const size_t bufsz = 30 + sizeof(char) * 500 * (priv->num_stations);
 238
 239         buf = kmalloc(bufsz, GFP_KERNEL);
 240         if (!buf)
 241                 return -ENOMEM;
 242
 243         pos += scnprintf(buf + pos, bufsz - pos, "num of stations: %d\n\n",
 244                         priv->num_stations);
 245
 246         for (i = 0; i < IWLAGN_STATION_COUNT; i++) {
 247                 station = &priv->stations[i];
 248                 if (!station->used)
 249                         continue;
 250                 pos += scnprintf(buf + pos, bufsz - pos,
 251                                  "station %d - addr: %pM, flags: %#x\n",
 252                                  i, station->sta.sta.addr,
 253                                  station->sta.station_flags_msk);
 254                 pos += scnprintf(buf + pos, bufsz - pos,
 255                                 "TID seqno  next_rclmd "
 256                                 "rate_n_flags state txq\n");
 257
 258                 for (j = 0; j < IWL_MAX_TID_COUNT; j++) {
 259                         tid_data = &priv->tid_data[i][j];
 260                         pos += scnprintf(buf + pos, bufsz - pos,
 261                                 "%d:  0x%.4x 0x%.4x     0x%.8x   "
 262                                 "%d     %.2d",
 263                                 j, tid_data->seq_number,
 264                                 tid_data->next_reclaimed,
 265                                 tid_data->agg.rate_n_flags,
 266                                 tid_data->agg.state,
 267                                 tid_data->agg.txq_id);
 268
 269                         if (tid_data->agg.wait_for_ba)
 270                                 pos += scnprintf(buf + pos, bufsz - pos,
 271                                                  " - waitforba");
 272                         pos += scnprintf(buf + pos, bufsz - pos, "\n");
 273                 }
 274
 275                 pos += scnprintf(buf + pos, bufsz - pos, "\n");
 276         }
 277
 278         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 279         kfree(buf);
 280         return ret;
 281 }
 282
 283 static ssize_t iwl_dbgfs_nvm_read(struct file *file,
 284                                        char __user *user_buf,
 285                                        size_t count,
 286                                        loff_t *ppos)
 287 {
 288         ssize_t ret;
 289         struct iwl_priv *priv = file->private_data;
 290         int pos = 0, ofs = 0, buf_size = 0;
 291         const u8 *ptr;
 292         char *buf;
 293         u16 nvm_ver;
 294         size_t eeprom_len = priv->eeprom_blob_size;
 295         buf_size = 4 * eeprom_len + 256;
 296
 297         if (eeprom_len % 16)
 298                 return -ENODATA;
 299
 300         ptr = priv->eeprom_blob;
 301         if (!ptr)
 302                 return -ENOMEM;
 303
 304         /* 4 characters for byte 0xYY */
 305         buf = kzalloc(buf_size, GFP_KERNEL);
 306         if (!buf)
 307                 return -ENOMEM;
 308
 309         nvm_ver = priv->nvm_data->nvm_version;
 310         pos += scnprintf(buf + pos, buf_size - pos,
 311                          "NVM version: 0x%x\n", nvm_ver);
 312         for (ofs = 0 ; ofs < eeprom_len ; ofs += 16) {
 313                 pos += scnprintf(buf + pos, buf_size - pos, "0x%.4x %16ph\n",
 314                                  ofs, ptr + ofs);
 315         }
 316
 317         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 318         kfree(buf);
 319         return ret;
 320 }
 321
 322 static ssize_t iwl_dbgfs_channels_read(struct file *file, char __user *user_buf,
 323                                        size_t count, loff_t *ppos)
 324 {
 325         struct iwl_priv *priv = file->private_data;
 326         struct ieee80211_channel *channels = NULL;
 327         const struct ieee80211_supported_band *supp_band = NULL;
 328         int pos = 0, i, bufsz = PAGE_SIZE;
 329         char *buf;
 330         ssize_t ret;
 331
 332         buf = kzalloc(bufsz, GFP_KERNEL);
 333         if (!buf)
 334                 return -ENOMEM;
 335
 336         supp_band = iwl_get_hw_mode(priv, NL80211_BAND_2GHZ);
 337         if (supp_band) {
 338                 channels = supp_band->channels;
 339
 340                 pos += scnprintf(buf + pos, bufsz - pos,
 341                                 "Displaying %d channels in 2.4GHz band 802.11bg):\n",
 342                                 supp_band->n_channels);
 343
 344                 for (i = 0; i < supp_band->n_channels; i++)
 345                         pos += scnprintf(buf + pos, bufsz - pos,
 346                                         "%d: %ddBm: BSS%s%s, %s.\n",
 347                                         channels[i].hw_value,
 348                                         channels[i].max_power,
 349                                         channels[i].flags & IEEE80211_CHAN_RADAR ?
 350                                         " (IEEE 802.11h required)" : "",
 351                                         ((channels[i].flags & IEEE80211_CHAN_NO_IR)
 352                                         || (channels[i].flags &
 353                                         IEEE80211_CHAN_RADAR)) ? "" :
 354                                         ", IBSS",
 355                                         channels[i].flags &
 356                                         IEEE80211_CHAN_NO_IR ?
 357                                         "passive only" : "active/passive");
 358         }
 359         supp_band = iwl_get_hw_mode(priv, NL80211_BAND_5GHZ);
 360         if (supp_band) {
 361                 channels = supp_band->channels;
 362
 363                 pos += scnprintf(buf + pos, bufsz - pos,
 364                                 "Displaying %d channels in 5.2GHz band (802.11a)\n",
 365                                 supp_band->n_channels);
 366
 367                 for (i = 0; i < supp_band->n_channels; i++)
 368                         pos += scnprintf(buf + pos, bufsz - pos,
 369                                         "%d: %ddBm: BSS%s%s, %s.\n",
 370                                         channels[i].hw_value,
 371                                         channels[i].max_power,
 372                                         channels[i].flags & IEEE80211_CHAN_RADAR ?
 373                                         " (IEEE 802.11h required)" : "",
 374                                         ((channels[i].flags & IEEE80211_CHAN_NO_IR)
 375                                         || (channels[i].flags &
 376                                         IEEE80211_CHAN_RADAR)) ? "" :
 377                                         ", IBSS",
 378                                         channels[i].flags &
 379                                         IEEE80211_CHAN_NO_IR ?
 380                                         "passive only" : "active/passive");
 381         }
 382         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 383         kfree(buf);
 384         return ret;
 385 }
 386
 387 static ssize_t iwl_dbgfs_status_read(struct file *file,
 388                                                 char __user *user_buf,
 389                                                 size_t count, loff_t *ppos) {
 390
 391         struct iwl_priv *priv = file->private_data;
 392         char buf[512];
 393         int pos = 0;
 394         const size_t bufsz = sizeof(buf);
 395
 396         pos += scnprintf(buf + pos, bufsz - pos, "STATUS_RF_KILL_HW:\t %d\n",
 397                 test_bit(STATUS_RF_KILL_HW, &priv->status));
 398         pos += scnprintf(buf + pos, bufsz - pos, "STATUS_CT_KILL:\t\t %d\n",
 399                 test_bit(STATUS_CT_KILL, &priv->status));
 400         pos += scnprintf(buf + pos, bufsz - pos, "STATUS_ALIVE:\t\t %d\n",
 401                 test_bit(STATUS_ALIVE, &priv->status));
 402         pos += scnprintf(buf + pos, bufsz - pos, "STATUS_READY:\t\t %d\n",
 403                 test_bit(STATUS_READY, &priv->status));
 404         pos += scnprintf(buf + pos, bufsz - pos, "STATUS_EXIT_PENDING:\t %d\n",
 405                 test_bit(STATUS_EXIT_PENDING, &priv->status));
 406         pos += scnprintf(buf + pos, bufsz - pos, "STATUS_STATISTICS:\t %d\n",
 407                 test_bit(STATUS_STATISTICS, &priv->status));
 408         pos += scnprintf(buf + pos, bufsz - pos, "STATUS_SCANNING:\t %d\n",
 409                 test_bit(STATUS_SCANNING, &priv->status));
 410         pos += scnprintf(buf + pos, bufsz - pos, "STATUS_SCAN_ABORTING:\t %d\n",
 411                 test_bit(STATUS_SCAN_ABORTING, &priv->status));
 412         pos += scnprintf(buf + pos, bufsz - pos, "STATUS_SCAN_HW:\t\t %d\n",
 413                 test_bit(STATUS_SCAN_HW, &priv->status));
 414         pos += scnprintf(buf + pos, bufsz - pos, "STATUS_POWER_PMI:\t %d\n",
 415                 test_bit(STATUS_POWER_PMI, &priv->status));
 416         pos += scnprintf(buf + pos, bufsz - pos, "STATUS_FW_ERROR:\t %d\n",
 417                 test_bit(STATUS_FW_ERROR, &priv->status));
 418         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 419 }
 420
 421 static ssize_t iwl_dbgfs_rx_handlers_read(struct file *file,
 422                                         char __user *user_buf,
 423                                         size_t count, loff_t *ppos) {
 424
 425         struct iwl_priv *priv = file->private_data;
 426
 427         int pos = 0;
 428         int cnt = 0;
 429         char *buf;
 430         int bufsz = 24 * 64; /* 24 items * 64 char per item */
 431         ssize_t ret;
 432
 433         buf = kzalloc(bufsz, GFP_KERNEL);
 434         if (!buf)
 435                 return -ENOMEM;
 436
 437         for (cnt = 0; cnt < REPLY_MAX; cnt++) {
 438                 if (priv->rx_handlers_stats[cnt] > 0)
 439                         pos += scnprintf(buf + pos, bufsz - pos,
 440                                 "\tRx handler[%36s]:\t\t %u\n",
 441                                 iwl_get_cmd_string(priv->trans, (u32)cnt),
 442                                 priv->rx_handlers_stats[cnt]);
 443         }
 444
 445         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 446         kfree(buf);
 447         return ret;
 448 }
 449
 450 static ssize_t iwl_dbgfs_rx_handlers_write(struct file *file,
 451                                          const char __user *user_buf,
 452                                          size_t count, loff_t *ppos)
 453 {
 454         struct iwl_priv *priv = file->private_data;
 455
 456         char buf[8];
 457         int buf_size;
 458         u32 reset_flag;
 459
 460         memset(buf, 0, sizeof(buf));
 461         buf_size = min(count, sizeof(buf) -  1);
 462         if (copy_from_user(buf, user_buf, buf_size))
 463                 return -EFAULT;
 464         if (sscanf(buf, "%x", &reset_flag) != 1)
 465                 return -EFAULT;
 466         if (reset_flag == 0)
 467                 memset(&priv->rx_handlers_stats[0], 0,
 468                         sizeof(priv->rx_handlers_stats));
 469
 470         return count;
 471 }
 472
 473 static ssize_t iwl_dbgfs_qos_read(struct file *file, char __user *user_buf,
 474                                        size_t count, loff_t *ppos)
 475 {
 476         struct iwl_priv *priv = file->private_data;
 477         struct iwl_rxon_context *ctx;
 478         int pos = 0, i;
 479         char buf[256 * NUM_IWL_RXON_CTX];
 480         const size_t bufsz = sizeof(buf);
 481
 482         for_each_context(priv, ctx) {
 483                 pos += scnprintf(buf + pos, bufsz - pos, "context %d:\n",
 484                                  ctx->ctxid);
 485                 for (i = 0; i < AC_NUM; i++) {
 486                         pos += scnprintf(buf + pos, bufsz - pos,
 487                                 "\tcw_min\tcw_max\taifsn\ttxop\n");
 488                         pos += scnprintf(buf + pos, bufsz - pos,
 489                                 "AC[%d]\t%u\t%u\t%u\t%u\n", i,
 490                                 ctx->qos_data.def_qos_parm.ac[i].cw_min,
 491                                 ctx->qos_data.def_qos_parm.ac[i].cw_max,
 492                                 ctx->qos_data.def_qos_parm.ac[i].aifsn,
 493                                 ctx->qos_data.def_qos_parm.ac[i].edca_txop);
 494                 }
 495                 pos += scnprintf(buf + pos, bufsz - pos, "\n");
 496         }
 497         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 498 }
 499
 500 static ssize_t iwl_dbgfs_thermal_throttling_read(struct file *file,
 501                                 char __user *user_buf,
 502                                 size_t count, loff_t *ppos)
 503 {
 504         struct iwl_priv *priv = file->private_data;
 505         struct iwl_tt_mgmt *tt = &priv->thermal_throttle;
 506         struct iwl_tt_restriction *restriction;
 507         char buf[100];
 508         int pos = 0;
 509         const size_t bufsz = sizeof(buf);
 510
 511         pos += scnprintf(buf + pos, bufsz - pos,
 512                         "Thermal Throttling Mode: %s\n",
 513                         tt->advanced_tt ? "Advance" : "Legacy");
 514         pos += scnprintf(buf + pos, bufsz - pos,
 515                         "Thermal Throttling State: %d\n",
 516                         tt->state);
 517         if (tt->advanced_tt) {
 518                 restriction = tt->restriction + tt->state;
 519                 pos += scnprintf(buf + pos, bufsz - pos,
 520                                 "Tx mode: %d\n",
 521                                 restriction->tx_stream);
 522                 pos += scnprintf(buf + pos, bufsz - pos,
 523                                 "Rx mode: %d\n",
 524                                 restriction->rx_stream);
 525                 pos += scnprintf(buf + pos, bufsz - pos,
 526                                 "HT mode: %d\n",
 527                                 restriction->is_ht);
 528         }
 529         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 530 }
 531
 532 static ssize_t iwl_dbgfs_disable_ht40_write(struct file *file,
 533                                          const char __user *user_buf,
 534                                          size_t count, loff_t *ppos)
 535 {
 536         struct iwl_priv *priv = file->private_data;
 537         char buf[8];
 538         int buf_size;
 539         int ht40;
 540
 541         memset(buf, 0, sizeof(buf));
 542         buf_size = min(count, sizeof(buf) -  1);
 543         if (copy_from_user(buf, user_buf, buf_size))
 544                 return -EFAULT;
 545         if (sscanf(buf, "%d", &ht40) != 1)
 546                 return -EFAULT;
 547         if (!iwl_is_any_associated(priv))
 548                 priv->disable_ht40 = ht40 ? true : false;
 549         else
 550                 return -EINVAL;
 551
 552         return count;
 553 }
 554
 555 static ssize_t iwl_dbgfs_disable_ht40_read(struct file *file,
 556                                          char __user *user_buf,
 557                                          size_t count, loff_t *ppos)
 558 {
 559         struct iwl_priv *priv = file->private_data;
 560         char buf[100];
 561         int pos = 0;
 562         const size_t bufsz = sizeof(buf);
 563
 564         pos += scnprintf(buf + pos, bufsz - pos,
 565                         "11n 40MHz Mode: %s\n",
 566                         priv->disable_ht40 ? "Disabled" : "Enabled");
 567         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 568 }
 569
 570 static ssize_t iwl_dbgfs_temperature_read(struct file *file,
 571                                          char __user *user_buf,
 572                                          size_t count, loff_t *ppos)
 573 {
 574         struct iwl_priv *priv = file->private_data;
 575         char buf[8];
 576         int pos = 0;
 577         const size_t bufsz = sizeof(buf);
 578
 579         pos += scnprintf(buf + pos, bufsz - pos, "%d\n", priv->temperature);
 580         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 581 }
 582
 583
 584 static ssize_t iwl_dbgfs_sleep_level_override_write(struct file *file,
 585                                                     const char __user *user_buf,
 586                                                     size_t count, loff_t *ppos)
 587 {
 588         struct iwl_priv *priv = file->private_data;
 589         char buf[8];
 590         int buf_size;
 591         int value;
 592
 593         memset(buf, 0, sizeof(buf));
 594         buf_size = min(count, sizeof(buf) -  1);
 595         if (copy_from_user(buf, user_buf, buf_size))
 596                 return -EFAULT;
 597
 598         if (sscanf(buf, "%d", &value) != 1)
 599                 return -EINVAL;
 600
 601         /*
 602          * Our users expect 0 to be "CAM", but 0 isn't actually
 603          * valid here. However, let's not confuse them and present
 604          * IWL_POWER_INDEX_1 as "1", not "0".
 605          */
 606         if (value == 0)
 607                 return -EINVAL;
 608         else if (value > 0)
 609                 value -= 1;
 610
 611         if (value != -1 && (value < 0 || value >= IWL_POWER_NUM))
 612                 return -EINVAL;
 613
 614         if (!iwl_is_ready_rf(priv))
 615                 return -EAGAIN;
 616
 617         priv->power_data.debug_sleep_level_override = value;
 618
 619         mutex_lock(&priv->mutex);
 620         iwl_power_update_mode(priv, true);
 621         mutex_unlock(&priv->mutex);
 622
 623         return count;
 624 }
 625
 626 static ssize_t iwl_dbgfs_sleep_level_override_read(struct file *file,
 627                                                    char __user *user_buf,
 628                                                    size_t count, loff_t *ppos)
 629 {
 630         struct iwl_priv *priv = file->private_data;
 631         char buf[10];
 632         int pos, value;
 633         const size_t bufsz = sizeof(buf);
 634
 635         /* see the write function */
 636         value = priv->power_data.debug_sleep_level_override;
 637         if (value >= 0)
 638                 value += 1;
 639
 640         pos = scnprintf(buf, bufsz, "%d\n", value);
 641         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 642 }
 643
 644 static ssize_t iwl_dbgfs_current_sleep_command_read(struct file *file,
 645                                                     char __user *user_buf,
 646                                                     size_t count, loff_t *ppos)
 647 {
 648         struct iwl_priv *priv = file->private_data;
 649         char buf[200];
 650         int pos = 0, i;
 651         const size_t bufsz = sizeof(buf);
 652         struct iwl_powertable_cmd *cmd = &priv->power_data.sleep_cmd;
 653
 654         pos += scnprintf(buf + pos, bufsz - pos,
 655                          "flags: %#.2x\n", le16_to_cpu(cmd->flags));
 656         pos += scnprintf(buf + pos, bufsz - pos,
 657                          "RX/TX timeout: %d/%d usec\n",
 658                          le32_to_cpu(cmd->rx_data_timeout),
 659                          le32_to_cpu(cmd->tx_data_timeout));
 660         for (i = 0; i < IWL_POWER_VEC_SIZE; i++)
 661                 pos += scnprintf(buf + pos, bufsz - pos,
 662                                  "sleep_interval[%d]: %d\n", i,
 663                                  le32_to_cpu(cmd->sleep_interval[i]));
 664
 665         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 666 }
 667
 668 DEBUGFS_READ_WRITE_FILE_OPS(sram);
 669 DEBUGFS_READ_FILE_OPS(wowlan_sram);
 670 DEBUGFS_READ_FILE_OPS(nvm);
 671 DEBUGFS_READ_FILE_OPS(stations);
 672 DEBUGFS_READ_FILE_OPS(channels);
 673 DEBUGFS_READ_FILE_OPS(status);
 674 DEBUGFS_READ_WRITE_FILE_OPS(rx_handlers);
 675 DEBUGFS_READ_FILE_OPS(qos);
 676 DEBUGFS_READ_FILE_OPS(thermal_throttling);
 677 DEBUGFS_READ_WRITE_FILE_OPS(disable_ht40);
 678 DEBUGFS_READ_FILE_OPS(temperature);
 679 DEBUGFS_READ_WRITE_FILE_OPS(sleep_level_override);
 680 DEBUGFS_READ_FILE_OPS(current_sleep_command);
 681
 682 #define fmt_value       "  %-30s %10u\n"
 683 #define fmt_hex         "  %-30s       0x%02X\n"
 684 #define fmt_table       "  %-30s %10u  %10u  %10u  %10u\n"
 685 #define fmt_header      "%-32s    current  cumulative       delta         max\n"
 686
 687 static int iwl_statistics_flag(struct iwl_priv *priv, char *buf, int bufsz)
 688 {
 689         int p = 0;
 690         u32 flag;
 691
 692         lockdep_assert_held(&priv->statistics.lock);
 693
 694         flag = le32_to_cpu(priv->statistics.flag);
 695
 696         p += scnprintf(buf + p, bufsz - p, "Statistics Flag(0x%X):\n", flag);
 697         if (flag & UCODE_STATISTICS_CLEAR_MSK)
 698                 p += scnprintf(buf + p, bufsz - p,
 699                 "\tStatistics have been cleared\n");
 700         p += scnprintf(buf + p, bufsz - p, "\tOperational Frequency: %s\n",
 701                 (flag & UCODE_STATISTICS_FREQUENCY_MSK)
 702                 ? "2.4 GHz" : "5.2 GHz");
 703         p += scnprintf(buf + p, bufsz - p, "\tTGj Narrow Band: %s\n",
 704                 (flag & UCODE_STATISTICS_NARROW_BAND_MSK)
 705                  ? "enabled" : "disabled");
 706
 707         return p;
 708 }
 709
 710 static ssize_t iwl_dbgfs_ucode_rx_stats_read(struct file *file,
 711                                         char __user *user_buf,
 712                                         size_t count, loff_t *ppos)
 713 {
 714         struct iwl_priv *priv = file->private_data;
 715         int pos = 0;
 716         char *buf;
 717         int bufsz = sizeof(struct statistics_rx_phy) * 40 +
 718                     sizeof(struct statistics_rx_non_phy) * 40 +
 719                     sizeof(struct statistics_rx_ht_phy) * 40 + 400;
 720         ssize_t ret;
 721         struct statistics_rx_phy *ofdm, *accum_ofdm, *delta_ofdm, *max_ofdm;
 722         struct statistics_rx_phy *cck, *accum_cck, *delta_cck, *max_cck;
 723         struct statistics_rx_non_phy *general, *accum_general;
 724         struct statistics_rx_non_phy *delta_general, *max_general;
 725         struct statistics_rx_ht_phy *ht, *accum_ht, *delta_ht, *max_ht;
 726
 727         if (!iwl_is_alive(priv))
 728                 return -EAGAIN;
 729
 730         buf = kzalloc(bufsz, GFP_KERNEL);
 731         if (!buf)
 732                 return -ENOMEM;
 733
 734         /*
 735          * the statistic information display here is based on
 736          * the last statistics notification from uCode
 737          * might not reflect the current uCode activity
 738          */
 739         spin_lock_bh(&priv->statistics.lock);
 740         ofdm = &priv->statistics.rx_ofdm;
 741         cck = &priv->statistics.rx_cck;
 742         general = &priv->statistics.rx_non_phy;
 743         ht = &priv->statistics.rx_ofdm_ht;
 744         accum_ofdm = &priv->accum_stats.rx_ofdm;
 745         accum_cck = &priv->accum_stats.rx_cck;
 746         accum_general = &priv->accum_stats.rx_non_phy;
 747         accum_ht = &priv->accum_stats.rx_ofdm_ht;
 748         delta_ofdm = &priv->delta_stats.rx_ofdm;
 749         delta_cck = &priv->delta_stats.rx_cck;
 750         delta_general = &priv->delta_stats.rx_non_phy;
 751         delta_ht = &priv->delta_stats.rx_ofdm_ht;
 752         max_ofdm = &priv->max_delta_stats.rx_ofdm;
 753         max_cck = &priv->max_delta_stats.rx_cck;
 754         max_general = &priv->max_delta_stats.rx_non_phy;
 755         max_ht = &priv->max_delta_stats.rx_ofdm_ht;
 756
 757         pos += iwl_statistics_flag(priv, buf, bufsz);
 758         pos += scnprintf(buf + pos, bufsz - pos,
 759                          fmt_header, "Statistics_Rx - OFDM:");
 760         pos += scnprintf(buf + pos, bufsz - pos,
 761                          fmt_table, "ina_cnt:",
 762                          le32_to_cpu(ofdm->ina_cnt),
 763                          accum_ofdm->ina_cnt,
 764                          delta_ofdm->ina_cnt, max_ofdm->ina_cnt);
 765         pos += scnprintf(buf + pos, bufsz - pos,
 766                          fmt_table, "fina_cnt:",
 767                          le32_to_cpu(ofdm->fina_cnt), accum_ofdm->fina_cnt,
 768                          delta_ofdm->fina_cnt, max_ofdm->fina_cnt);
 769         pos += scnprintf(buf + pos, bufsz - pos,
 770                          fmt_table, "plcp_err:",
 771                          le32_to_cpu(ofdm->plcp_err), accum_ofdm->plcp_err,
 772                          delta_ofdm->plcp_err, max_ofdm->plcp_err);
 773         pos += scnprintf(buf + pos, bufsz - pos,
 774                          fmt_table, "crc32_err:",
 775                          le32_to_cpu(ofdm->crc32_err), accum_ofdm->crc32_err,
 776                          delta_ofdm->crc32_err, max_ofdm->crc32_err);
 777         pos += scnprintf(buf + pos, bufsz - pos,
 778                          fmt_table, "overrun_err:",
 779                          le32_to_cpu(ofdm->overrun_err),
 780                          accum_ofdm->overrun_err, delta_ofdm->overrun_err,
 781                          max_ofdm->overrun_err);
 782         pos += scnprintf(buf + pos, bufsz - pos,
 783                          fmt_table, "early_overrun_err:",
 784                          le32_to_cpu(ofdm->early_overrun_err),
 785                          accum_ofdm->early_overrun_err,
 786                          delta_ofdm->early_overrun_err,
 787                          max_ofdm->early_overrun_err);
 788         pos += scnprintf(buf + pos, bufsz - pos,
 789                          fmt_table, "crc32_good:",
 790                          le32_to_cpu(ofdm->crc32_good),
 791                          accum_ofdm->crc32_good, delta_ofdm->crc32_good,
 792                          max_ofdm->crc32_good);
 793         pos += scnprintf(buf + pos, bufsz - pos,
 794                          fmt_table, "false_alarm_cnt:",
 795                          le32_to_cpu(ofdm->false_alarm_cnt),
 796                          accum_ofdm->false_alarm_cnt,
 797                          delta_ofdm->false_alarm_cnt,
 798                          max_ofdm->false_alarm_cnt);
 799         pos += scnprintf(buf + pos, bufsz - pos,
 800                          fmt_table, "fina_sync_err_cnt:",
 801                          le32_to_cpu(ofdm->fina_sync_err_cnt),
 802                          accum_ofdm->fina_sync_err_cnt,
 803                          delta_ofdm->fina_sync_err_cnt,
 804                          max_ofdm->fina_sync_err_cnt);
 805         pos += scnprintf(buf + pos, bufsz - pos,
 806                          fmt_table, "sfd_timeout:",
 807                          le32_to_cpu(ofdm->sfd_timeout),
 808                          accum_ofdm->sfd_timeout, delta_ofdm->sfd_timeout,
 809                          max_ofdm->sfd_timeout);
 810         pos += scnprintf(buf + pos, bufsz - pos,
 811                          fmt_table, "fina_timeout:",
 812                          le32_to_cpu(ofdm->fina_timeout),
 813                          accum_ofdm->fina_timeout, delta_ofdm->fina_timeout,
 814                          max_ofdm->fina_timeout);
 815         pos += scnprintf(buf + pos, bufsz - pos,
 816                          fmt_table, "unresponded_rts:",
 817                          le32_to_cpu(ofdm->unresponded_rts),
 818                          accum_ofdm->unresponded_rts,
 819                          delta_ofdm->unresponded_rts,
 820                          max_ofdm->unresponded_rts);
 821         pos += scnprintf(buf + pos, bufsz - pos,
 822                          fmt_table, "rxe_frame_lmt_ovrun:",
 823                          le32_to_cpu(ofdm->rxe_frame_limit_overrun),
 824                          accum_ofdm->rxe_frame_limit_overrun,
 825                          delta_ofdm->rxe_frame_limit_overrun,
 826                          max_ofdm->rxe_frame_limit_overrun);
 827         pos += scnprintf(buf + pos, bufsz - pos,
 828                          fmt_table, "sent_ack_cnt:",
 829                          le32_to_cpu(ofdm->sent_ack_cnt),
 830                          accum_ofdm->sent_ack_cnt, delta_ofdm->sent_ack_cnt,
 831                          max_ofdm->sent_ack_cnt);
 832         pos += scnprintf(buf + pos, bufsz - pos,
 833                          fmt_table, "sent_cts_cnt:",
 834                          le32_to_cpu(ofdm->sent_cts_cnt),
 835                          accum_ofdm->sent_cts_cnt, delta_ofdm->sent_cts_cnt,
 836                          max_ofdm->sent_cts_cnt);
 837         pos += scnprintf(buf + pos, bufsz - pos,
 838                          fmt_table, "sent_ba_rsp_cnt:",
 839                          le32_to_cpu(ofdm->sent_ba_rsp_cnt),
 840                          accum_ofdm->sent_ba_rsp_cnt,
 841                          delta_ofdm->sent_ba_rsp_cnt,
 842                          max_ofdm->sent_ba_rsp_cnt);
 843         pos += scnprintf(buf + pos, bufsz - pos,
 844                          fmt_table, "dsp_self_kill:",
 845                          le32_to_cpu(ofdm->dsp_self_kill),
 846                          accum_ofdm->dsp_self_kill,
 847                          delta_ofdm->dsp_self_kill,
 848                          max_ofdm->dsp_self_kill);
 849         pos += scnprintf(buf + pos, bufsz - pos,
 850                          fmt_table, "mh_format_err:",
 851                          le32_to_cpu(ofdm->mh_format_err),
 852                          accum_ofdm->mh_format_err,
 853                          delta_ofdm->mh_format_err,
 854                          max_ofdm->mh_format_err);
 855         pos += scnprintf(buf + pos, bufsz - pos,
 856                          fmt_table, "re_acq_main_rssi_sum:",
 857                          le32_to_cpu(ofdm->re_acq_main_rssi_sum),
 858                          accum_ofdm->re_acq_main_rssi_sum,
 859                          delta_ofdm->re_acq_main_rssi_sum,
 860                          max_ofdm->re_acq_main_rssi_sum);
 861
 862         pos += scnprintf(buf + pos, bufsz - pos,
 863                          fmt_header, "Statistics_Rx - CCK:");
 864         pos += scnprintf(buf + pos, bufsz - pos,
 865                          fmt_table, "ina_cnt:",
 866                          le32_to_cpu(cck->ina_cnt), accum_cck->ina_cnt,
 867                          delta_cck->ina_cnt, max_cck->ina_cnt);
 868         pos += scnprintf(buf + pos, bufsz - pos,
 869                          fmt_table, "fina_cnt:",
 870                          le32_to_cpu(cck->fina_cnt), accum_cck->fina_cnt,
 871                          delta_cck->fina_cnt, max_cck->fina_cnt);
 872         pos += scnprintf(buf + pos, bufsz - pos,
 873                          fmt_table, "plcp_err:",
 874                          le32_to_cpu(cck->plcp_err), accum_cck->plcp_err,
 875                          delta_cck->plcp_err, max_cck->plcp_err);
 876         pos += scnprintf(buf + pos, bufsz - pos,
 877                          fmt_table, "crc32_err:",
 878                          le32_to_cpu(cck->crc32_err), accum_cck->crc32_err,
 879                          delta_cck->crc32_err, max_cck->crc32_err);
 880         pos += scnprintf(buf + pos, bufsz - pos,
 881                          fmt_table, "overrun_err:",
 882                          le32_to_cpu(cck->overrun_err),
 883                          accum_cck->overrun_err, delta_cck->overrun_err,
 884                          max_cck->overrun_err);
 885         pos += scnprintf(buf + pos, bufsz - pos,
 886                          fmt_table, "early_overrun_err:",
 887                          le32_to_cpu(cck->early_overrun_err),
 888                          accum_cck->early_overrun_err,
 889                          delta_cck->early_overrun_err,
 890                          max_cck->early_overrun_err);
 891         pos += scnprintf(buf + pos, bufsz - pos,
 892                          fmt_table, "crc32_good:",
 893                          le32_to_cpu(cck->crc32_good), accum_cck->crc32_good,
 894                          delta_cck->crc32_good, max_cck->crc32_good);
 895         pos += scnprintf(buf + pos, bufsz - pos,
 896                          fmt_table, "false_alarm_cnt:",
 897                          le32_to_cpu(cck->false_alarm_cnt),
 898                          accum_cck->false_alarm_cnt,
 899                          delta_cck->false_alarm_cnt, max_cck->false_alarm_cnt);
 900         pos += scnprintf(buf + pos, bufsz - pos,
 901                          fmt_table, "fina_sync_err_cnt:",
 902                          le32_to_cpu(cck->fina_sync_err_cnt),
 903                          accum_cck->fina_sync_err_cnt,
 904                          delta_cck->fina_sync_err_cnt,
 905                          max_cck->fina_sync_err_cnt);
 906         pos += scnprintf(buf + pos, bufsz - pos,
 907                          fmt_table, "sfd_timeout:",
 908                          le32_to_cpu(cck->sfd_timeout),
 909                          accum_cck->sfd_timeout, delta_cck->sfd_timeout,
 910                          max_cck->sfd_timeout);
 911         pos += scnprintf(buf + pos, bufsz - pos,
 912                          fmt_table, "fina_timeout:",
 913                          le32_to_cpu(cck->fina_timeout),
 914                          accum_cck->fina_timeout, delta_cck->fina_timeout,
 915                          max_cck->fina_timeout);
 916         pos += scnprintf(buf + pos, bufsz - pos,
 917                          fmt_table, "unresponded_rts:",
 918                          le32_to_cpu(cck->unresponded_rts),
 919                          accum_cck->unresponded_rts, delta_cck->unresponded_rts,
 920                          max_cck->unresponded_rts);
 921         pos += scnprintf(buf + pos, bufsz - pos,
 922                          fmt_table, "rxe_frame_lmt_ovrun:",
 923                          le32_to_cpu(cck->rxe_frame_limit_overrun),
 924                          accum_cck->rxe_frame_limit_overrun,
 925                          delta_cck->rxe_frame_limit_overrun,
 926                          max_cck->rxe_frame_limit_overrun);
 927         pos += scnprintf(buf + pos, bufsz - pos,
 928                          fmt_table, "sent_ack_cnt:",
 929                          le32_to_cpu(cck->sent_ack_cnt),
 930                          accum_cck->sent_ack_cnt, delta_cck->sent_ack_cnt,
 931                          max_cck->sent_ack_cnt);
 932         pos += scnprintf(buf + pos, bufsz - pos,
 933                          fmt_table, "sent_cts_cnt:",
 934                          le32_to_cpu(cck->sent_cts_cnt),
 935                          accum_cck->sent_cts_cnt, delta_cck->sent_cts_cnt,
 936                          max_cck->sent_cts_cnt);
 937         pos += scnprintf(buf + pos, bufsz - pos,
 938                          fmt_table, "sent_ba_rsp_cnt:",
 939                          le32_to_cpu(cck->sent_ba_rsp_cnt),
 940                          accum_cck->sent_ba_rsp_cnt,
 941                          delta_cck->sent_ba_rsp_cnt,
 942                          max_cck->sent_ba_rsp_cnt);
 943         pos += scnprintf(buf + pos, bufsz - pos,
 944                          fmt_table, "dsp_self_kill:",
 945                          le32_to_cpu(cck->dsp_self_kill),
 946                          accum_cck->dsp_self_kill, delta_cck->dsp_self_kill,
 947                          max_cck->dsp_self_kill);
 948         pos += scnprintf(buf + pos, bufsz - pos,
 949                          fmt_table, "mh_format_err:",
 950                          le32_to_cpu(cck->mh_format_err),
 951                          accum_cck->mh_format_err, delta_cck->mh_format_err,
 952                          max_cck->mh_format_err);
 953         pos += scnprintf(buf + pos, bufsz - pos,
 954                          fmt_table, "re_acq_main_rssi_sum:",
 955                          le32_to_cpu(cck->re_acq_main_rssi_sum),
 956                          accum_cck->re_acq_main_rssi_sum,
 957                          delta_cck->re_acq_main_rssi_sum,
 958                          max_cck->re_acq_main_rssi_sum);
 959
 960         pos += scnprintf(buf + pos, bufsz - pos,
 961                          fmt_header, "Statistics_Rx - GENERAL:");
 962         pos += scnprintf(buf + pos, bufsz - pos,
 963                          fmt_table, "bogus_cts:",
 964                          le32_to_cpu(general->bogus_cts),
 965                          accum_general->bogus_cts, delta_general->bogus_cts,
 966                          max_general->bogus_cts);
 967         pos += scnprintf(buf + pos, bufsz - pos,
 968                          fmt_table, "bogus_ack:",
 969                          le32_to_cpu(general->bogus_ack),
 970                          accum_general->bogus_ack, delta_general->bogus_ack,
 971                          max_general->bogus_ack);
 972         pos += scnprintf(buf + pos, bufsz - pos,
 973                          fmt_table, "non_bssid_frames:",
 974                          le32_to_cpu(general->non_bssid_frames),
 975                          accum_general->non_bssid_frames,
 976                          delta_general->non_bssid_frames,
 977                          max_general->non_bssid_frames);
 978         pos += scnprintf(buf + pos, bufsz - pos,
 979                          fmt_table, "filtered_frames:",
 980                          le32_to_cpu(general->filtered_frames),
 981                          accum_general->filtered_frames,
 982                          delta_general->filtered_frames,
 983                          max_general->filtered_frames);
 984         pos += scnprintf(buf + pos, bufsz - pos,
 985                          fmt_table, "non_channel_beacons:",
 986                          le32_to_cpu(general->non_channel_beacons),
 987                          accum_general->non_channel_beacons,
 988                          delta_general->non_channel_beacons,
 989                          max_general->non_channel_beacons);
 990         pos += scnprintf(buf + pos, bufsz - pos,
 991                          fmt_table, "channel_beacons:",
 992                          le32_to_cpu(general->channel_beacons),
 993                          accum_general->channel_beacons,
 994                          delta_general->channel_beacons,
 995                          max_general->channel_beacons);
 996         pos += scnprintf(buf + pos, bufsz - pos,
 997                          fmt_table, "num_missed_bcon:",
 998                          le32_to_cpu(general->num_missed_bcon),
 999                          accum_general->num_missed_bcon,
1000                          delta_general->num_missed_bcon,
1001                          max_general->num_missed_bcon);
1002         pos += scnprintf(buf + pos, bufsz - pos,
1003                          fmt_table, "adc_rx_saturation_time:",
1004                          le32_to_cpu(general->adc_rx_saturation_time),
1005                          accum_general->adc_rx_saturation_time,
1006                          delta_general->adc_rx_saturation_time,
1007                          max_general->adc_rx_saturation_time);
1008         pos += scnprintf(buf + pos, bufsz - pos,
1009                          fmt_table, "ina_detect_search_tm:",
1010                          le32_to_cpu(general->ina_detection_search_time),
1011                          accum_general->ina_detection_search_time,
1012                          delta_general->ina_detection_search_time,
1013                          max_general->ina_detection_search_time);
1014         pos += scnprintf(buf + pos, bufsz - pos,
1015                          fmt_table, "beacon_silence_rssi_a:",
1016                          le32_to_cpu(general->beacon_silence_rssi_a),
1017                          accum_general->beacon_silence_rssi_a,
1018                          delta_general->beacon_silence_rssi_a,
1019                          max_general->beacon_silence_rssi_a);
1020         pos += scnprintf(buf + pos, bufsz - pos,
1021                          fmt_table, "beacon_silence_rssi_b:",
1022                          le32_to_cpu(general->beacon_silence_rssi_b),
1023                          accum_general->beacon_silence_rssi_b,
1024                          delta_general->beacon_silence_rssi_b,
1025                          max_general->beacon_silence_rssi_b);
1026         pos += scnprintf(buf + pos, bufsz - pos,
1027                          fmt_table, "beacon_silence_rssi_c:",
1028                          le32_to_cpu(general->beacon_silence_rssi_c),
1029                          accum_general->beacon_silence_rssi_c,
1030                          delta_general->beacon_silence_rssi_c,
1031                          max_general->beacon_silence_rssi_c);
1032         pos += scnprintf(buf + pos, bufsz - pos,
1033                          fmt_table, "interference_data_flag:",
1034                          le32_to_cpu(general->interference_data_flag),
1035                          accum_general->interference_data_flag,
1036                          delta_general->interference_data_flag,
1037                          max_general->interference_data_flag);
1038         pos += scnprintf(buf + pos, bufsz - pos,
1039                          fmt_table, "channel_load:",
1040                          le32_to_cpu(general->channel_load),
1041                          accum_general->channel_load,
1042                          delta_general->channel_load,
1043                          max_general->channel_load);
1044         pos += scnprintf(buf + pos, bufsz - pos,
1045                          fmt_table, "dsp_false_alarms:",
1046                          le32_to_cpu(general->dsp_false_alarms),
1047                          accum_general->dsp_false_alarms,
1048                          delta_general->dsp_false_alarms,
1049                          max_general->dsp_false_alarms);
1050         pos += scnprintf(buf + pos, bufsz - pos,
1051                          fmt_table, "beacon_rssi_a:",
1052                          le32_to_cpu(general->beacon_rssi_a),
1053                          accum_general->beacon_rssi_a,
1054                          delta_general->beacon_rssi_a,
1055                          max_general->beacon_rssi_a);
1056         pos += scnprintf(buf + pos, bufsz - pos,
1057                          fmt_table, "beacon_rssi_b:",
1058                          le32_to_cpu(general->beacon_rssi_b),
1059                          accum_general->beacon_rssi_b,
1060                          delta_general->beacon_rssi_b,
1061                          max_general->beacon_rssi_b);
1062         pos += scnprintf(buf + pos, bufsz - pos,
1063                          fmt_table, "beacon_rssi_c:",
1064                          le32_to_cpu(general->beacon_rssi_c),
1065                          accum_general->beacon_rssi_c,
1066                          delta_general->beacon_rssi_c,
1067                          max_general->beacon_rssi_c);
1068         pos += scnprintf(buf + pos, bufsz - pos,
1069                          fmt_table, "beacon_energy_a:",
1070                          le32_to_cpu(general->beacon_energy_a),
1071                          accum_general->beacon_energy_a,
1072                          delta_general->beacon_energy_a,
1073                          max_general->beacon_energy_a);
1074         pos += scnprintf(buf + pos, bufsz - pos,
1075                          fmt_table, "beacon_energy_b:",
1076                          le32_to_cpu(general->beacon_energy_b),
1077                          accum_general->beacon_energy_b,
1078                          delta_general->beacon_energy_b,
1079                          max_general->beacon_energy_b);
1080         pos += scnprintf(buf + pos, bufsz - pos,
1081                          fmt_table, "beacon_energy_c:",
1082                          le32_to_cpu(general->beacon_energy_c),
1083                          accum_general->beacon_energy_c,
1084                          delta_general->beacon_energy_c,
1085                          max_general->beacon_energy_c);
1086
1087         pos += scnprintf(buf + pos, bufsz - pos,
1088                          fmt_header, "Statistics_Rx - OFDM_HT:");
1089         pos += scnprintf(buf + pos, bufsz - pos,
1090                          fmt_table, "plcp_err:",
1091                          le32_to_cpu(ht->plcp_err), accum_ht->plcp_err,
1092                          delta_ht->plcp_err, max_ht->plcp_err);
1093         pos += scnprintf(buf + pos, bufsz - pos,
1094                          fmt_table, "overrun_err:",
1095                          le32_to_cpu(ht->overrun_err), accum_ht->overrun_err,
1096                          delta_ht->overrun_err, max_ht->overrun_err);
1097         pos += scnprintf(buf + pos, bufsz - pos,
1098                          fmt_table, "early_overrun_err:",
1099                          le32_to_cpu(ht->early_overrun_err),
1100                          accum_ht->early_overrun_err,
1101                          delta_ht->early_overrun_err,
1102                          max_ht->early_overrun_err);
1103         pos += scnprintf(buf + pos, bufsz - pos,
1104                          fmt_table, "crc32_good:",
1105                          le32_to_cpu(ht->crc32_good), accum_ht->crc32_good,
1106                          delta_ht->crc32_good, max_ht->crc32_good);
1107         pos += scnprintf(buf + pos, bufsz - pos,
1108                          fmt_table, "crc32_err:",
1109                          le32_to_cpu(ht->crc32_err), accum_ht->crc32_err,
1110                          delta_ht->crc32_err, max_ht->crc32_err);
1111         pos += scnprintf(buf + pos, bufsz - pos,
1112                          fmt_table, "mh_format_err:",
1113                          le32_to_cpu(ht->mh_format_err),
1114                          accum_ht->mh_format_err,
1115                          delta_ht->mh_format_err, max_ht->mh_format_err);
1116         pos += scnprintf(buf + pos, bufsz - pos,
1117                          fmt_table, "agg_crc32_good:",
1118                          le32_to_cpu(ht->agg_crc32_good),
1119                          accum_ht->agg_crc32_good,
1120                          delta_ht->agg_crc32_good, max_ht->agg_crc32_good);
1121         pos += scnprintf(buf + pos, bufsz - pos,
1122                          fmt_table, "agg_mpdu_cnt:",
1123                          le32_to_cpu(ht->agg_mpdu_cnt),
1124                          accum_ht->agg_mpdu_cnt,
1125                          delta_ht->agg_mpdu_cnt, max_ht->agg_mpdu_cnt);
1126         pos += scnprintf(buf + pos, bufsz - pos,
1127                          fmt_table, "agg_cnt:",
1128                          le32_to_cpu(ht->agg_cnt), accum_ht->agg_cnt,
1129                          delta_ht->agg_cnt, max_ht->agg_cnt);
1130         pos += scnprintf(buf + pos, bufsz - pos,
1131                          fmt_table, "unsupport_mcs:",
1132                          le32_to_cpu(ht->unsupport_mcs),
1133                          accum_ht->unsupport_mcs,
1134                          delta_ht->unsupport_mcs, max_ht->unsupport_mcs);
1135
1136         spin_unlock_bh(&priv->statistics.lock);
1137
1138         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
1139         kfree(buf);
1140         return ret;
1141 }
1142
1143 static ssize_t iwl_dbgfs_ucode_tx_stats_read(struct file *file,
1144                                         char __user *user_buf,
1145                                         size_t count, loff_t *ppos)
1146 {
1147         struct iwl_priv *priv = file->private_data;
1148         int pos = 0;
1149         char *buf;
1150         int bufsz = (sizeof(struct statistics_tx) * 48) + 250;
1151         ssize_t ret;
1152         struct statistics_tx *tx, *accum_tx, *delta_tx, *max_tx;
1153
1154         if (!iwl_is_alive(priv))
1155                 return -EAGAIN;
1156
1157         buf = kzalloc(bufsz, GFP_KERNEL);
1158         if (!buf)
1159                 return -ENOMEM;
1160
1161         /* the statistic information display here is based on
1162          * the last statistics notification from uCode
1163          * might not reflect the current uCode activity
1164          */
1165         spin_lock_bh(&priv->statistics.lock);
1166
1167         tx = &priv->statistics.tx;
1168         accum_tx = &priv->accum_stats.tx;
1169         delta_tx = &priv->delta_stats.tx;
1170         max_tx = &priv->max_delta_stats.tx;
1171
1172         pos += iwl_statistics_flag(priv, buf, bufsz);
1173         pos += scnprintf(buf + pos, bufsz - pos,
1174                          fmt_header, "Statistics_Tx:");
1175         pos += scnprintf(buf + pos, bufsz - pos,
1176                          fmt_table, "preamble:",
1177                          le32_to_cpu(tx->preamble_cnt),
1178                          accum_tx->preamble_cnt,
1179                          delta_tx->preamble_cnt, max_tx->preamble_cnt);
1180         pos += scnprintf(buf + pos, bufsz - pos,
1181                          fmt_table, "rx_detected_cnt:",
1182                          le32_to_cpu(tx->rx_detected_cnt),
1183                          accum_tx->rx_detected_cnt,
1184                          delta_tx->rx_detected_cnt, max_tx->rx_detected_cnt);
1185         pos += scnprintf(buf + pos, bufsz - pos,
1186                          fmt_table, "bt_prio_defer_cnt:",
1187                          le32_to_cpu(tx->bt_prio_defer_cnt),
1188                          accum_tx->bt_prio_defer_cnt,
1189                          delta_tx->bt_prio_defer_cnt,
1190                          max_tx->bt_prio_defer_cnt);
1191         pos += scnprintf(buf + pos, bufsz - pos,
1192                          fmt_table, "bt_prio_kill_cnt:",
1193                          le32_to_cpu(tx->bt_prio_kill_cnt),
1194                          accum_tx->bt_prio_kill_cnt,
1195                          delta_tx->bt_prio_kill_cnt,
1196                          max_tx->bt_prio_kill_cnt);
1197         pos += scnprintf(buf + pos, bufsz - pos,
1198                          fmt_table, "few_bytes_cnt:",
1199                          le32_to_cpu(tx->few_bytes_cnt),
1200                          accum_tx->few_bytes_cnt,
1201                          delta_tx->few_bytes_cnt, max_tx->few_bytes_cnt);
1202         pos += scnprintf(buf + pos, bufsz - pos,
1203                          fmt_table, "cts_timeout:",
1204                          le32_to_cpu(tx->cts_timeout), accum_tx->cts_timeout,
1205                          delta_tx->cts_timeout, max_tx->cts_timeout);
1206         pos += scnprintf(buf + pos, bufsz - pos,
1207                          fmt_table, "ack_timeout:",
1208                          le32_to_cpu(tx->ack_timeout),
1209                          accum_tx->ack_timeout,
1210                          delta_tx->ack_timeout, max_tx->ack_timeout);
1211         pos += scnprintf(buf + pos, bufsz - pos,
1212                          fmt_table, "expected_ack_cnt:",
1213                          le32_to_cpu(tx->expected_ack_cnt),
1214                          accum_tx->expected_ack_cnt,
1215                          delta_tx->expected_ack_cnt,
1216                          max_tx->expected_ack_cnt);
1217         pos += scnprintf(buf + pos, bufsz - pos,
1218                          fmt_table, "actual_ack_cnt:",
1219                          le32_to_cpu(tx->actual_ack_cnt),
1220                          accum_tx->actual_ack_cnt,
1221                          delta_tx->actual_ack_cnt,
1222                          max_tx->actual_ack_cnt);
1223         pos += scnprintf(buf + pos, bufsz - pos,
1224                          fmt_table, "dump_msdu_cnt:",
1225                          le32_to_cpu(tx->dump_msdu_cnt),
1226                          accum_tx->dump_msdu_cnt,
1227                          delta_tx->dump_msdu_cnt,
1228                          max_tx->dump_msdu_cnt);
1229         pos += scnprintf(buf + pos, bufsz - pos,
1230                          fmt_table, "abort_nxt_frame_mismatch:",
1231                          le32_to_cpu(tx->burst_abort_next_frame_mismatch_cnt),
1232                          accum_tx->burst_abort_next_frame_mismatch_cnt,
1233                          delta_tx->burst_abort_next_frame_mismatch_cnt,
1234                          max_tx->burst_abort_next_frame_mismatch_cnt);
1235         pos += scnprintf(buf + pos, bufsz - pos,
1236                          fmt_table, "abort_missing_nxt_frame:",
1237                          le32_to_cpu(tx->burst_abort_missing_next_frame_cnt),
1238                          accum_tx->burst_abort_missing_next_frame_cnt,
1239                          delta_tx->burst_abort_missing_next_frame_cnt,
1240                          max_tx->burst_abort_missing_next_frame_cnt);
1241         pos += scnprintf(buf + pos, bufsz - pos,
1242                          fmt_table, "cts_timeout_collision:",
1243                          le32_to_cpu(tx->cts_timeout_collision),
1244                          accum_tx->cts_timeout_collision,
1245                          delta_tx->cts_timeout_collision,
1246                          max_tx->cts_timeout_collision);
1247         pos += scnprintf(buf + pos, bufsz - pos,
1248                          fmt_table, "ack_ba_timeout_collision:",
1249                          le32_to_cpu(tx->ack_or_ba_timeout_collision),
1250                          accum_tx->ack_or_ba_timeout_collision,
1251                          delta_tx->ack_or_ba_timeout_collision,
1252                          max_tx->ack_or_ba_timeout_collision);
1253         pos += scnprintf(buf + pos, bufsz - pos,
1254                          fmt_table, "agg ba_timeout:",
1255                          le32_to_cpu(tx->agg.ba_timeout),
1256                          accum_tx->agg.ba_timeout,
1257                          delta_tx->agg.ba_timeout,
1258                          max_tx->agg.ba_timeout);
1259         pos += scnprintf(buf + pos, bufsz - pos,
1260                          fmt_table, "agg ba_resched_frames:",
1261                          le32_to_cpu(tx->agg.ba_reschedule_frames),
1262                          accum_tx->agg.ba_reschedule_frames,
1263                          delta_tx->agg.ba_reschedule_frames,
1264                          max_tx->agg.ba_reschedule_frames);
1265         pos += scnprintf(buf + pos, bufsz - pos,
1266                          fmt_table, "agg scd_query_agg_frame:",
1267                          le32_to_cpu(tx->agg.scd_query_agg_frame_cnt),
1268                          accum_tx->agg.scd_query_agg_frame_cnt,
1269                          delta_tx->agg.scd_query_agg_frame_cnt,
1270                          max_tx->agg.scd_query_agg_frame_cnt);
1271         pos += scnprintf(buf + pos, bufsz - pos,
1272                          fmt_table, "agg scd_query_no_agg:",
1273                          le32_to_cpu(tx->agg.scd_query_no_agg),
1274                          accum_tx->agg.scd_query_no_agg,
1275                          delta_tx->agg.scd_query_no_agg,
1276                          max_tx->agg.scd_query_no_agg);
1277         pos += scnprintf(buf + pos, bufsz - pos,
1278                          fmt_table, "agg scd_query_agg:",
1279                          le32_to_cpu(tx->agg.scd_query_agg),
1280                          accum_tx->agg.scd_query_agg,
1281                          delta_tx->agg.scd_query_agg,
1282                          max_tx->agg.scd_query_agg);
1283         pos += scnprintf(buf + pos, bufsz - pos,
1284                          fmt_table, "agg scd_query_mismatch:",
1285                          le32_to_cpu(tx->agg.scd_query_mismatch),
1286                          accum_tx->agg.scd_query_mismatch,
1287                          delta_tx->agg.scd_query_mismatch,
1288                          max_tx->agg.scd_query_mismatch);
1289         pos += scnprintf(buf + pos, bufsz - pos,
1290                          fmt_table, "agg frame_not_ready:",
1291                          le32_to_cpu(tx->agg.frame_not_ready),
1292                          accum_tx->agg.frame_not_ready,
1293                          delta_tx->agg.frame_not_ready,
1294                          max_tx->agg.frame_not_ready);
1295         pos += scnprintf(buf + pos, bufsz - pos,
1296                          fmt_table, "agg underrun:",
1297                          le32_to_cpu(tx->agg.underrun),
1298                          accum_tx->agg.underrun,
1299                          delta_tx->agg.underrun, max_tx->agg.underrun);
1300         pos += scnprintf(buf + pos, bufsz - pos,
1301                          fmt_table, "agg bt_prio_kill:",
1302                          le32_to_cpu(tx->agg.bt_prio_kill),
1303                          accum_tx->agg.bt_prio_kill,
1304                          delta_tx->agg.bt_prio_kill,
1305                          max_tx->agg.bt_prio_kill);
1306         pos += scnprintf(buf + pos, bufsz - pos,
1307                          fmt_table, "agg rx_ba_rsp_cnt:",
1308                          le32_to_cpu(tx->agg.rx_ba_rsp_cnt),
1309                          accum_tx->agg.rx_ba_rsp_cnt,
1310                          delta_tx->agg.rx_ba_rsp_cnt,
1311                          max_tx->agg.rx_ba_rsp_cnt);
1312
1313         if (tx->tx_power.ant_a || tx->tx_power.ant_b || tx->tx_power.ant_c) {
1314                 pos += scnprintf(buf + pos, bufsz - pos,
1315                         "tx power: (1/2 dB step)\n");
1316                 if ((priv->nvm_data->valid_tx_ant & ANT_A) &&
1317                     tx->tx_power.ant_a)
1318                         pos += scnprintf(buf + pos, bufsz - pos,
1319                                         fmt_hex, "antenna A:",
1320                                         tx->tx_power.ant_a);
1321                 if ((priv->nvm_data->valid_tx_ant & ANT_B) &&
1322                     tx->tx_power.ant_b)
1323                         pos += scnprintf(buf + pos, bufsz - pos,
1324                                         fmt_hex, "antenna B:",
1325                                         tx->tx_power.ant_b);
1326                 if ((priv->nvm_data->valid_tx_ant & ANT_C) &&
1327                     tx->tx_power.ant_c)
1328                         pos += scnprintf(buf + pos, bufsz - pos,
1329                                         fmt_hex, "antenna C:",
1330                                         tx->tx_power.ant_c);
1331         }
1332
1333         spin_unlock_bh(&priv->statistics.lock);
1334
1335         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
1336         kfree(buf);
1337         return ret;
1338 }
1339
1340 static ssize_t iwl_dbgfs_ucode_general_stats_read(struct file *file,
1341                                         char __user *user_buf,
1342                                         size_t count, loff_t *ppos)
1343 {
1344         struct iwl_priv *priv = file->private_data;
1345         int pos = 0;
1346         char *buf;
1347         int bufsz = sizeof(struct statistics_general) * 10 + 300;
1348         ssize_t ret;
1349         struct statistics_general_common *general, *accum_general;
1350         struct statistics_general_common *delta_general, *max_general;
1351         struct statistics_dbg *dbg, *accum_dbg, *delta_dbg, *max_dbg;
1352         struct statistics_div *div, *accum_div, *delta_div, *max_div;
1353
1354         if (!iwl_is_alive(priv))
1355                 return -EAGAIN;
1356
1357         buf = kzalloc(bufsz, GFP_KERNEL);
1358         if (!buf)
1359                 return -ENOMEM;
1360
1361         /* the statistic information display here is based on
1362          * the last statistics notification from uCode
1363          * might not reflect the current uCode activity
1364          */
1365
1366         spin_lock_bh(&priv->statistics.lock);
1367
1368         general = &priv->statistics.common;
1369         dbg = &priv->statistics.common.dbg;
1370         div = &priv->statistics.common.div;
1371         accum_general = &priv->accum_stats.common;
1372         accum_dbg = &priv->accum_stats.common.dbg;
1373         accum_div = &priv->accum_stats.common.div;
1374         delta_general = &priv->delta_stats.common;
1375         max_general = &priv->max_delta_stats.common;
1376         delta_dbg = &priv->delta_stats.common.dbg;
1377         max_dbg = &priv->max_delta_stats.common.dbg;
1378         delta_div = &priv->delta_stats.common.div;
1379         max_div = &priv->max_delta_stats.common.div;
1380
1381         pos += iwl_statistics_flag(priv, buf, bufsz);
1382         pos += scnprintf(buf + pos, bufsz - pos,
1383                          fmt_header, "Statistics_General:");
1384         pos += scnprintf(buf + pos, bufsz - pos,
1385                          fmt_value, "temperature:",
1386                          le32_to_cpu(general->temperature));
1387         pos += scnprintf(buf + pos, bufsz - pos,
1388                          fmt_value, "temperature_m:",
1389                          le32_to_cpu(general->temperature_m));
1390         pos += scnprintf(buf + pos, bufsz - pos,
1391                          fmt_value, "ttl_timestamp:",
1392                          le32_to_cpu(general->ttl_timestamp));
1393         pos += scnprintf(buf + pos, bufsz - pos,
1394                          fmt_table, "burst_check:",
1395                          le32_to_cpu(dbg->burst_check),
1396                          accum_dbg->burst_check,
1397                          delta_dbg->burst_check, max_dbg->burst_check);
1398         pos += scnprintf(buf + pos, bufsz - pos,
1399                          fmt_table, "burst_count:",
1400                          le32_to_cpu(dbg->burst_count),
1401                          accum_dbg->burst_count,
1402                          delta_dbg->burst_count, max_dbg->burst_count);
1403         pos += scnprintf(buf + pos, bufsz - pos,
1404                          fmt_table, "wait_for_silence_timeout_count:",
1405                          le32_to_cpu(dbg->wait_for_silence_timeout_cnt),
1406                          accum_dbg->wait_for_silence_timeout_cnt,
1407                          delta_dbg->wait_for_silence_timeout_cnt,
1408                          max_dbg->wait_for_silence_timeout_cnt);
1409         pos += scnprintf(buf + pos, bufsz - pos,
1410                          fmt_table, "sleep_time:",
1411                          le32_to_cpu(general->sleep_time),
1412                          accum_general->sleep_time,
1413                          delta_general->sleep_time, max_general->sleep_time);
1414         pos += scnprintf(buf + pos, bufsz - pos,
1415                          fmt_table, "slots_out:",
1416                          le32_to_cpu(general->slots_out),
1417                          accum_general->slots_out,
1418                          delta_general->slots_out, max_general->slots_out);
1419         pos += scnprintf(buf + pos, bufsz - pos,
1420                          fmt_table, "slots_idle:",
1421                          le32_to_cpu(general->slots_idle),
1422                          accum_general->slots_idle,
1423                          delta_general->slots_idle, max_general->slots_idle);
1424         pos += scnprintf(buf + pos, bufsz - pos,
1425                          fmt_table, "tx_on_a:",
1426                          le32_to_cpu(div->tx_on_a), accum_div->tx_on_a,
1427                          delta_div->tx_on_a, max_div->tx_on_a);
1428         pos += scnprintf(buf + pos, bufsz - pos,
1429                          fmt_table, "tx_on_b:",
1430                          le32_to_cpu(div->tx_on_b), accum_div->tx_on_b,
1431                          delta_div->tx_on_b, max_div->tx_on_b);
1432         pos += scnprintf(buf + pos, bufsz - pos,
1433                          fmt_table, "exec_time:",
1434                          le32_to_cpu(div->exec_time), accum_div->exec_time,
1435                          delta_div->exec_time, max_div->exec_time);
1436         pos += scnprintf(buf + pos, bufsz - pos,
1437                          fmt_table, "probe_time:",
1438                          le32_to_cpu(div->probe_time), accum_div->probe_time,
1439                          delta_div->probe_time, max_div->probe_time);
1440         pos += scnprintf(buf + pos, bufsz - pos,
1441                          fmt_table, "rx_enable_counter:",
1442                          le32_to_cpu(general->rx_enable_counter),
1443                          accum_general->rx_enable_counter,
1444                          delta_general->rx_enable_counter,
1445                          max_general->rx_enable_counter);
1446         pos += scnprintf(buf + pos, bufsz - pos,
1447                          fmt_table, "num_of_sos_states:",
1448                          le32_to_cpu(general->num_of_sos_states),
1449                          accum_general->num_of_sos_states,
1450                          delta_general->num_of_sos_states,
1451                          max_general->num_of_sos_states);
1452
1453         spin_unlock_bh(&priv->statistics.lock);
1454
1455         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
1456         kfree(buf);
1457         return ret;
1458 }
1459
1460 static ssize_t iwl_dbgfs_ucode_bt_stats_read(struct file *file,
1461                                         char __user *user_buf,
1462                                         size_t count, loff_t *ppos)
1463 {
1464         struct iwl_priv *priv = (struct iwl_priv *)file->private_data;
1465         int pos = 0;
1466         char *buf;
1467         int bufsz = (sizeof(struct statistics_bt_activity) * 24) + 200;
1468         ssize_t ret;
1469         struct statistics_bt_activity *bt, *accum_bt;
1470
1471         if (!iwl_is_alive(priv))
1472                 return -EAGAIN;
1473
1474         if (!priv->bt_enable_flag)
1475                 return -EINVAL;
1476
1477         /* make request to uCode to retrieve statistics information */
1478         mutex_lock(&priv->mutex);
1479         ret = iwl_send_statistics_request(priv, 0, false);
1480         mutex_unlock(&priv->mutex);
1481
1482         if (ret)
1483                 return -EAGAIN;
1484         buf = kzalloc(bufsz, GFP_KERNEL);
1485         if (!buf)
1486                 return -ENOMEM;
1487
1488         /*
1489          * the statistic information display here is based on
1490          * the last statistics notification from uCode
1491          * might not reflect the current uCode activity
1492          */
1493
1494         spin_lock_bh(&priv->statistics.lock);
1495
1496         bt = &priv->statistics.bt_activity;
1497         accum_bt = &priv->accum_stats.bt_activity;
1498
1499         pos += iwl_statistics_flag(priv, buf, bufsz);
1500         pos += scnprintf(buf + pos, bufsz - pos, "Statistics_BT:\n");
1501         pos += scnprintf(buf + pos, bufsz - pos,
1502                         "\t\t\tcurrent\t\t\taccumulative\n");
1503         pos += scnprintf(buf + pos, bufsz - pos,
1504                          "hi_priority_tx_req_cnt:\t\t%u\t\t\t%u\n",
1505                          le32_to_cpu(bt->hi_priority_tx_req_cnt),
1506                          accum_bt->hi_priority_tx_req_cnt);
1507         pos += scnprintf(buf + pos, bufsz - pos,
1508                          "hi_priority_tx_denied_cnt:\t%u\t\t\t%u\n",
1509                          le32_to_cpu(bt->hi_priority_tx_denied_cnt),
1510                          accum_bt->hi_priority_tx_denied_cnt);
1511         pos += scnprintf(buf + pos, bufsz - pos,
1512                          "lo_priority_tx_req_cnt:\t\t%u\t\t\t%u\n",
1513                          le32_to_cpu(bt->lo_priority_tx_req_cnt),
1514                          accum_bt->lo_priority_tx_req_cnt);
1515         pos += scnprintf(buf + pos, bufsz - pos,
1516                          "lo_priority_tx_denied_cnt:\t%u\t\t\t%u\n",
1517                          le32_to_cpu(bt->lo_priority_tx_denied_cnt),
1518                          accum_bt->lo_priority_tx_denied_cnt);
1519         pos += scnprintf(buf + pos, bufsz - pos,
1520                          "hi_priority_rx_req_cnt:\t\t%u\t\t\t%u\n",
1521                          le32_to_cpu(bt->hi_priority_rx_req_cnt),
1522                          accum_bt->hi_priority_rx_req_cnt);
1523         pos += scnprintf(buf + pos, bufsz - pos,
1524                          "hi_priority_rx_denied_cnt:\t%u\t\t\t%u\n",
1525                          le32_to_cpu(bt->hi_priority_rx_denied_cnt),
1526                          accum_bt->hi_priority_rx_denied_cnt);
1527         pos += scnprintf(buf + pos, bufsz - pos,
1528                          "lo_priority_rx_req_cnt:\t\t%u\t\t\t%u\n",
1529                          le32_to_cpu(bt->lo_priority_rx_req_cnt),
1530                          accum_bt->lo_priority_rx_req_cnt);
1531         pos += scnprintf(buf + pos, bufsz - pos,
1532                          "lo_priority_rx_denied_cnt:\t%u\t\t\t%u\n",
1533                          le32_to_cpu(bt->lo_priority_rx_denied_cnt),
1534                          accum_bt->lo_priority_rx_denied_cnt);
1535
1536         pos += scnprintf(buf + pos, bufsz - pos,
1537                          "(rx)num_bt_kills:\t\t%u\t\t\t%u\n",
1538                          le32_to_cpu(priv->statistics.num_bt_kills),
1539                          priv->statistics.accum_num_bt_kills);
1540
1541         spin_unlock_bh(&priv->statistics.lock);
1542
1543         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
1544         kfree(buf);
1545         return ret;
1546 }
1547
1548 static ssize_t iwl_dbgfs_reply_tx_error_read(struct file *file,
1549                                         char __user *user_buf,
1550                                         size_t count, loff_t *ppos)
1551 {
1552         struct iwl_priv *priv = (struct iwl_priv *)file->private_data;
1553         int pos = 0;
1554         char *buf;
1555         int bufsz = (sizeof(struct reply_tx_error_statistics) * 24) +
1556                 (sizeof(struct reply_agg_tx_error_statistics) * 24) + 200;
1557         ssize_t ret;
1558
1559         if (!iwl_is_alive(priv))
1560                 return -EAGAIN;
1561
1562         buf = kzalloc(bufsz, GFP_KERNEL);
1563         if (!buf)
1564                 return -ENOMEM;
1565
1566         pos += scnprintf(buf + pos, bufsz - pos, "Statistics_TX_Error:\n");
1567         pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t\t%u\n",
1568                          iwl_get_tx_fail_reason(TX_STATUS_POSTPONE_DELAY),
1569                          priv->reply_tx_stats.pp_delay);
1570         pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
1571                          iwl_get_tx_fail_reason(TX_STATUS_POSTPONE_FEW_BYTES),
1572                          priv->reply_tx_stats.pp_few_bytes);
1573         pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
1574                          iwl_get_tx_fail_reason(TX_STATUS_POSTPONE_BT_PRIO),
1575                          priv->reply_tx_stats.pp_bt_prio);
1576         pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
1577                          iwl_get_tx_fail_reason(TX_STATUS_POSTPONE_QUIET_PERIOD),
1578                          priv->reply_tx_stats.pp_quiet_period);
1579         pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
1580                          iwl_get_tx_fail_reason(TX_STATUS_POSTPONE_CALC_TTAK),
1581                          priv->reply_tx_stats.pp_calc_ttak);
1582         pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t%u\n",
1583                          iwl_get_tx_fail_reason(
1584                                 TX_STATUS_FAIL_INTERNAL_CROSSED_RETRY),
1585                          priv->reply_tx_stats.int_crossed_retry);
1586         pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
1587                          iwl_get_tx_fail_reason(TX_STATUS_FAIL_SHORT_LIMIT),
1588                          priv->reply_tx_stats.short_limit);
1589         pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
1590                          iwl_get_tx_fail_reason(TX_STATUS_FAIL_LONG_LIMIT),
1591                          priv->reply_tx_stats.long_limit);
1592         pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
1593                          iwl_get_tx_fail_reason(TX_STATUS_FAIL_FIFO_UNDERRUN),
1594                          priv->reply_tx_stats.fifo_underrun);
1595         pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
1596                          iwl_get_tx_fail_reason(TX_STATUS_FAIL_DRAIN_FLOW),
1597                          priv->reply_tx_stats.drain_flow);
1598         pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
1599                          iwl_get_tx_fail_reason(TX_STATUS_FAIL_RFKILL_FLUSH),
1600                          priv->reply_tx_stats.rfkill_flush);
1601         pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
1602                          iwl_get_tx_fail_reason(TX_STATUS_FAIL_LIFE_EXPIRE),
1603                          priv->reply_tx_stats.life_expire);
1604         pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
1605                          iwl_get_tx_fail_reason(TX_STATUS_FAIL_DEST_PS),
1606                          priv->reply_tx_stats.dest_ps);
1607         pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
1608                          iwl_get_tx_fail_reason(TX_STATUS_FAIL_HOST_ABORTED),
1609                          priv->reply_tx_stats.host_abort);
1610         pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
1611                          iwl_get_tx_fail_reason(TX_STATUS_FAIL_BT_RETRY),
1612                          priv->reply_tx_stats.pp_delay);
1613         pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
1614                          iwl_get_tx_fail_reason(TX_STATUS_FAIL_STA_INVALID),
1615                          priv->reply_tx_stats.sta_invalid);
1616         pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
1617                          iwl_get_tx_fail_reason(TX_STATUS_FAIL_FRAG_DROPPED),
1618                          priv->reply_tx_stats.frag_drop);
1619         pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
1620                          iwl_get_tx_fail_reason(TX_STATUS_FAIL_TID_DISABLE),
1621                          priv->reply_tx_stats.tid_disable);
1622         pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
1623                          iwl_get_tx_fail_reason(TX_STATUS_FAIL_FIFO_FLUSHED),
1624                          priv->reply_tx_stats.fifo_flush);
1625         pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t%u\n",
1626                          iwl_get_tx_fail_reason(
1627                                 TX_STATUS_FAIL_INSUFFICIENT_CF_POLL),
1628                          priv->reply_tx_stats.insuff_cf_poll);
1629         pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
1630                          iwl_get_tx_fail_reason(TX_STATUS_FAIL_PASSIVE_NO_RX),
1631                          priv->reply_tx_stats.fail_hw_drop);
1632         pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t%u\n",
1633                          iwl_get_tx_fail_reason(
1634                                 TX_STATUS_FAIL_NO_BEACON_ON_RADAR),
1635                          priv->reply_tx_stats.sta_color_mismatch);
1636         pos += scnprintf(buf + pos, bufsz - pos, "UNKNOWN:\t\t\t%u\n",
1637                          priv->reply_tx_stats.unknown);
1638
1639         pos += scnprintf(buf + pos, bufsz - pos,
1640                          "\nStatistics_Agg_TX_Error:\n");
1641
1642         pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
1643                          iwl_get_agg_tx_fail_reason(AGG_TX_STATE_UNDERRUN_MSK),
1644                          priv->reply_agg_tx_stats.underrun);
1645         pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
1646                          iwl_get_agg_tx_fail_reason(AGG_TX_STATE_BT_PRIO_MSK),
1647                          priv->reply_agg_tx_stats.bt_prio);
1648         pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
1649                          iwl_get_agg_tx_fail_reason(AGG_TX_STATE_FEW_BYTES_MSK),
1650                          priv->reply_agg_tx_stats.few_bytes);
1651         pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
1652                          iwl_get_agg_tx_fail_reason(AGG_TX_STATE_ABORT_MSK),
1653                          priv->reply_agg_tx_stats.abort);
1654         pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t%u\n",
1655                          iwl_get_agg_tx_fail_reason(
1656                                 AGG_TX_STATE_LAST_SENT_TTL_MSK),
1657                          priv->reply_agg_tx_stats.last_sent_ttl);
1658         pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t%u\n",
1659                          iwl_get_agg_tx_fail_reason(
1660                                 AGG_TX_STATE_LAST_SENT_TRY_CNT_MSK),
1661                          priv->reply_agg_tx_stats.last_sent_try);
1662         pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t%u\n",
1663                          iwl_get_agg_tx_fail_reason(
1664                                 AGG_TX_STATE_LAST_SENT_BT_KILL_MSK),
1665                          priv->reply_agg_tx_stats.last_sent_bt_kill);
1666         pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
1667                          iwl_get_agg_tx_fail_reason(AGG_TX_STATE_SCD_QUERY_MSK),
1668                          priv->reply_agg_tx_stats.scd_query);
1669         pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t%u\n",
1670                          iwl_get_agg_tx_fail_reason(
1671                                 AGG_TX_STATE_TEST_BAD_CRC32_MSK),
1672                          priv->reply_agg_tx_stats.bad_crc32);
1673         pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
1674                          iwl_get_agg_tx_fail_reason(AGG_TX_STATE_RESPONSE_MSK),
1675                          priv->reply_agg_tx_stats.response);
1676         pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
1677                          iwl_get_agg_tx_fail_reason(AGG_TX_STATE_DUMP_TX_MSK),
1678                          priv->reply_agg_tx_stats.dump_tx);
1679         pos += scnprintf(buf + pos, bufsz - pos, "%s:\t\t\t%u\n",
1680                          iwl_get_agg_tx_fail_reason(AGG_TX_STATE_DELAY_TX_MSK),
1681                          priv->reply_agg_tx_stats.delay_tx);
1682         pos += scnprintf(buf + pos, bufsz - pos, "UNKNOWN:\t\t\t%u\n",
1683                          priv->reply_agg_tx_stats.unknown);
1684
1685         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
1686         kfree(buf);
1687         return ret;
1688 }
1689
1690 static ssize_t iwl_dbgfs_sensitivity_read(struct file *file,
1691                                         char __user *user_buf,
1692                                         size_t count, loff_t *ppos) {
1693
1694         struct iwl_priv *priv = file->private_data;
1695         int pos = 0;
1696         int cnt = 0;
1697         char *buf;
1698         int bufsz = sizeof(struct iwl_sensitivity_data) * 4 + 100;
1699         ssize_t ret;
1700         struct iwl_sensitivity_data *data;
1701
1702         data = &priv->sensitivity_data;
1703         buf = kzalloc(bufsz, GFP_KERNEL);
1704         if (!buf)
1705                 return -ENOMEM;
1706
1707         pos += scnprintf(buf + pos, bufsz - pos, "auto_corr_ofdm:\t\t\t %u\n",
1708                         data->auto_corr_ofdm);
1709         pos += scnprintf(buf + pos, bufsz - pos,
1710                         "auto_corr_ofdm_mrc:\t\t %u\n",
1711                         data->auto_corr_ofdm_mrc);
1712         pos += scnprintf(buf + pos, bufsz - pos, "auto_corr_ofdm_x1:\t\t %u\n",
1713                         data->auto_corr_ofdm_x1);
1714         pos += scnprintf(buf + pos, bufsz - pos,
1715                         "auto_corr_ofdm_mrc_x1:\t\t %u\n",
1716                         data->auto_corr_ofdm_mrc_x1);
1717         pos += scnprintf(buf + pos, bufsz - pos, "auto_corr_cck:\t\t\t %u\n",
1718                         data->auto_corr_cck);
1719         pos += scnprintf(buf + pos, bufsz - pos, "auto_corr_cck_mrc:\t\t %u\n",
1720                         data->auto_corr_cck_mrc);
1721         pos += scnprintf(buf + pos, bufsz - pos,
1722                         "last_bad_plcp_cnt_ofdm:\t\t %u\n",
1723                         data->last_bad_plcp_cnt_ofdm);
1724         pos += scnprintf(buf + pos, bufsz - pos, "last_fa_cnt_ofdm:\t\t %u\n",
1725                         data->last_fa_cnt_ofdm);
1726         pos += scnprintf(buf + pos, bufsz - pos,
1727                         "last_bad_plcp_cnt_cck:\t\t %u\n",
1728                         data->last_bad_plcp_cnt_cck);
1729         pos += scnprintf(buf + pos, bufsz - pos, "last_fa_cnt_cck:\t\t %u\n",
1730                         data->last_fa_cnt_cck);
1731         pos += scnprintf(buf + pos, bufsz - pos, "nrg_curr_state:\t\t\t %u\n",
1732                         data->nrg_curr_state);
1733         pos += scnprintf(buf + pos, bufsz - pos, "nrg_prev_state:\t\t\t %u\n",
1734                         data->nrg_prev_state);
1735         pos += scnprintf(buf + pos, bufsz - pos, "nrg_value:\t\t\t");
1736         for (cnt = 0; cnt < 10; cnt++) {
1737                 pos += scnprintf(buf + pos, bufsz - pos, " %u",
1738                                 data->nrg_value[cnt]);
1739         }
1740         pos += scnprintf(buf + pos, bufsz - pos, "\n");
1741         pos += scnprintf(buf + pos, bufsz - pos, "nrg_silence_rssi:\t\t");
1742         for (cnt = 0; cnt < NRG_NUM_PREV_STAT_L; cnt++) {
1743                 pos += scnprintf(buf + pos, bufsz - pos, " %u",
1744                                 data->nrg_silence_rssi[cnt]);
1745         }
1746         pos += scnprintf(buf + pos, bufsz - pos, "\n");
1747         pos += scnprintf(buf + pos, bufsz - pos, "nrg_silence_ref:\t\t %u\n",
1748                         data->nrg_silence_ref);
1749         pos += scnprintf(buf + pos, bufsz - pos, "nrg_energy_idx:\t\t\t %u\n",
1750                         data->nrg_energy_idx);
1751         pos += scnprintf(buf + pos, bufsz - pos, "nrg_silence_idx:\t\t %u\n",
1752                         data->nrg_silence_idx);
1753         pos += scnprintf(buf + pos, bufsz - pos, "nrg_th_cck:\t\t\t %u\n",
1754                         data->nrg_th_cck);
1755         pos += scnprintf(buf + pos, bufsz - pos,
1756                         "nrg_auto_corr_silence_diff:\t %u\n",
1757                         data->nrg_auto_corr_silence_diff);
1758         pos += scnprintf(buf + pos, bufsz - pos, "num_in_cck_no_fa:\t\t %u\n",
1759                         data->num_in_cck_no_fa);
1760         pos += scnprintf(buf + pos, bufsz - pos, "nrg_th_ofdm:\t\t\t %u\n",
1761                         data->nrg_th_ofdm);
1762
1763         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
1764         kfree(buf);
1765         return ret;
1766 }
1767
1768
1769 static ssize_t iwl_dbgfs_chain_noise_read(struct file *file,
1770                                         char __user *user_buf,
1771                                         size_t count, loff_t *ppos) {
1772
1773         struct iwl_priv *priv = file->private_data;
1774         int pos = 0;
1775         int cnt = 0;
1776         char *buf;
1777         int bufsz = sizeof(struct iwl_chain_noise_data) * 4 + 100;
1778         ssize_t ret;
1779         struct iwl_chain_noise_data *data;
1780
1781         data = &priv->chain_noise_data;
1782         buf = kzalloc(bufsz, GFP_KERNEL);
1783         if (!buf)
1784                 return -ENOMEM;
1785
1786         pos += scnprintf(buf + pos, bufsz - pos, "active_chains:\t\t\t %u\n",
1787                         data->active_chains);
1788         pos += scnprintf(buf + pos, bufsz - pos, "chain_noise_a:\t\t\t %u\n",
1789                         data->chain_noise_a);
1790         pos += scnprintf(buf + pos, bufsz - pos, "chain_noise_b:\t\t\t %u\n",
1791                         data->chain_noise_b);
1792         pos += scnprintf(buf + pos, bufsz - pos, "chain_noise_c:\t\t\t %u\n",
1793                         data->chain_noise_c);
1794         pos += scnprintf(buf + pos, bufsz - pos, "chain_signal_a:\t\t\t %u\n",
1795                         data->chain_signal_a);
1796         pos += scnprintf(buf + pos, bufsz - pos, "chain_signal_b:\t\t\t %u\n",
1797                         data->chain_signal_b);
1798         pos += scnprintf(buf + pos, bufsz - pos, "chain_signal_c:\t\t\t %u\n",
1799                         data->chain_signal_c);
1800         pos += scnprintf(buf + pos, bufsz - pos, "beacon_count:\t\t\t %u\n",
1801                         data->beacon_count);
1802
1803         pos += scnprintf(buf + pos, bufsz - pos, "disconn_array:\t\t\t");
1804         for (cnt = 0; cnt < NUM_RX_CHAINS; cnt++) {
1805                 pos += scnprintf(buf + pos, bufsz - pos, " %u",
1806                                 data->disconn_array[cnt]);
1807         }
1808         pos += scnprintf(buf + pos, bufsz - pos, "\n");
1809         pos += scnprintf(buf + pos, bufsz - pos, "delta_gain_code:\t\t");
1810         for (cnt = 0; cnt < NUM_RX_CHAINS; cnt++) {
1811                 pos += scnprintf(buf + pos, bufsz - pos, " %u",
1812                                 data->delta_gain_code[cnt]);
1813         }
1814         pos += scnprintf(buf + pos, bufsz - pos, "\n");
1815         pos += scnprintf(buf + pos, bufsz - pos, "radio_write:\t\t\t %u\n",
1816                         data->radio_write);
1817         pos += scnprintf(buf + pos, bufsz - pos, "state:\t\t\t\t %u\n",
1818                         data->state);
1819
1820         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
1821         kfree(buf);
1822         return ret;
1823 }
1824
1825 static ssize_t iwl_dbgfs_power_save_status_read(struct file *file,
1826                                                     char __user *user_buf,
1827                                                     size_t count, loff_t *ppos)
1828 {
1829         struct iwl_priv *priv = file->private_data;
1830         char buf[60];
1831         int pos = 0;
1832         const size_t bufsz = sizeof(buf);
1833         u32 pwrsave_status;
1834
1835         pwrsave_status = iwl_read32(priv->trans, CSR_GP_CNTRL) &
1836                         CSR_GP_REG_POWER_SAVE_STATUS_MSK;
1837
1838         pos += scnprintf(buf + pos, bufsz - pos, "Power Save Status: ");
1839         pos += scnprintf(buf + pos, bufsz - pos, "%s\n",
1840                 (pwrsave_status == CSR_GP_REG_NO_POWER_SAVE) ? "none" :
1841                 (pwrsave_status == CSR_GP_REG_MAC_POWER_SAVE) ? "MAC" :
1842                 (pwrsave_status == CSR_GP_REG_PHY_POWER_SAVE) ? "PHY" :
1843                 "error");
1844
1845         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
1846 }
1847
1848 static ssize_t iwl_dbgfs_clear_ucode_statistics_write(struct file *file,
1849                                          const char __user *user_buf,
1850                                          size_t count, loff_t *ppos)
1851 {
1852         struct iwl_priv *priv = file->private_data;
1853         char buf[8];
1854         int buf_size;
1855         int clear;
1856
1857         memset(buf, 0, sizeof(buf));
1858         buf_size = min(count, sizeof(buf) -  1);
1859         if (copy_from_user(buf, user_buf, buf_size))
1860                 return -EFAULT;
1861         if (sscanf(buf, "%d", &clear) != 1)
1862                 return -EFAULT;
1863
1864         /* make request to uCode to retrieve statistics information */
1865         mutex_lock(&priv->mutex);
1866         iwl_send_statistics_request(priv, 0, true);
1867         mutex_unlock(&priv->mutex);
1868
1869         return count;
1870 }
1871
1872 static ssize_t iwl_dbgfs_ucode_tracing_read(struct file *file,
1873                                         char __user *user_buf,
1874                                         size_t count, loff_t *ppos) {
1875
1876         struct iwl_priv *priv = file->private_data;
1877         int pos = 0;
1878         char buf[128];
1879         const size_t bufsz = sizeof(buf);
1880
1881         pos += scnprintf(buf + pos, bufsz - pos, "ucode trace timer is %s\n",
1882                         priv->event_log.ucode_trace ? "On" : "Off");
1883         pos += scnprintf(buf + pos, bufsz - pos, "non_wraps_count:\t\t %u\n",
1884                         priv->event_log.non_wraps_count);
1885         pos += scnprintf(buf + pos, bufsz - pos, "wraps_once_count:\t\t %u\n",
1886                         priv->event_log.wraps_once_count);
1887         pos += scnprintf(buf + pos, bufsz - pos, "wraps_more_count:\t\t %u\n",
1888                         priv->event_log.wraps_more_count);
1889
1890         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
1891 }
1892
1893 static ssize_t iwl_dbgfs_ucode_tracing_write(struct file *file,
1894                                          const char __user *user_buf,
1895                                          size_t count, loff_t *ppos)
1896 {
1897         struct iwl_priv *priv = file->private_data;
1898         char buf[8];
1899         int buf_size;
1900         int trace;
1901
1902         memset(buf, 0, sizeof(buf));
1903         buf_size = min(count, sizeof(buf) -  1);
1904         if (copy_from_user(buf, user_buf, buf_size))
1905                 return -EFAULT;
1906         if (sscanf(buf, "%d", &trace) != 1)
1907                 return -EFAULT;
1908
1909         if (trace) {
1910                 priv->event_log.ucode_trace = true;
1911                 if (iwl_is_alive(priv)) {
1912                         /* start collecting data now */
1913                         mod_timer(&priv->ucode_trace, jiffies);
1914                 }
1915         } else {
1916                 priv->event_log.ucode_trace = false;
1917                 del_timer_sync(&priv->ucode_trace);
1918         }
1919
1920         return count;
1921 }
1922
1923 static ssize_t iwl_dbgfs_rxon_flags_read(struct file *file,
1924                                          char __user *user_buf,
1925                                          size_t count, loff_t *ppos) {
1926
1927         struct iwl_priv *priv = file->private_data;
1928         int len = 0;
1929         char buf[20];
1930
1931         len = sprintf(buf, "0x%04X\n",
1932                 le32_to_cpu(priv->contexts[IWL_RXON_CTX_BSS].active.flags));
1933         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
1934 }
1935
1936 static ssize_t iwl_dbgfs_rxon_filter_flags_read(struct file *file,
1937                                                 char __user *user_buf,
1938                                                 size_t count, loff_t *ppos) {
1939
1940         struct iwl_priv *priv = file->private_data;
1941         int len = 0;
1942         char buf[20];
1943
1944         len = sprintf(buf, "0x%04X\n",
1945                 le32_to_cpu(priv->contexts[IWL_RXON_CTX_BSS].active.filter_flags));
1946         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
1947 }
1948
1949 static ssize_t iwl_dbgfs_missed_beacon_read(struct file *file,
1950                                         char __user *user_buf,
1951                                         size_t count, loff_t *ppos) {
1952
1953         struct iwl_priv *priv = file->private_data;
1954         int pos = 0;
1955         char buf[12];
1956         const size_t bufsz = sizeof(buf);
1957
1958         pos += scnprintf(buf + pos, bufsz - pos, "%d\n",
1959                         priv->missed_beacon_threshold);
1960
1961         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
1962 }
1963
1964 static ssize_t iwl_dbgfs_missed_beacon_write(struct file *file,
1965                                          const char __user *user_buf,
1966                                          size_t count, loff_t *ppos)
1967 {
1968         struct iwl_priv *priv = file->private_data;
1969         char buf[8];
1970         int buf_size;
1971         int missed;
1972
1973         memset(buf, 0, sizeof(buf));
1974         buf_size = min(count, sizeof(buf) -  1);
1975         if (copy_from_user(buf, user_buf, buf_size))
1976                 return -EFAULT;
1977         if (sscanf(buf, "%d", &missed) != 1)
1978                 return -EINVAL;
1979
1980         if (missed < IWL_MISSED_BEACON_THRESHOLD_MIN ||
1981             missed > IWL_MISSED_BEACON_THRESHOLD_MAX)
1982                 priv->missed_beacon_threshold =
1983                         IWL_MISSED_BEACON_THRESHOLD_DEF;
1984         else
1985                 priv->missed_beacon_threshold = missed;
1986
1987         return count;
1988 }
1989
1990 static ssize_t iwl_dbgfs_plcp_delta_read(struct file *file,
1991                                         char __user *user_buf,
1992                                         size_t count, loff_t *ppos) {
1993
1994         struct iwl_priv *priv = file->private_data;
1995         int pos = 0;
1996         char buf[12];
1997         const size_t bufsz = sizeof(buf);
1998
1999         pos += scnprintf(buf + pos, bufsz - pos, "%u\n",
2000                         priv->plcp_delta_threshold);
2001
2002         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
2003 }
2004
2005 static ssize_t iwl_dbgfs_plcp_delta_write(struct file *file,
2006                                         const char __user *user_buf,
2007                                         size_t count, loff_t *ppos) {
2008
2009         struct iwl_priv *priv = file->private_data;
2010         char buf[8];
2011         int buf_size;
2012         int plcp;
2013
2014         memset(buf, 0, sizeof(buf));
2015         buf_size = min(count, sizeof(buf) -  1);
2016         if (copy_from_user(buf, user_buf, buf_size))
2017                 return -EFAULT;
2018         if (sscanf(buf, "%d", &plcp) != 1)
2019                 return -EINVAL;
2020         if ((plcp < IWL_MAX_PLCP_ERR_THRESHOLD_MIN) ||
2021                 (plcp > IWL_MAX_PLCP_ERR_THRESHOLD_MAX))
2022                 priv->plcp_delta_threshold =
2023                         IWL_MAX_PLCP_ERR_THRESHOLD_DISABLE;
2024         else
2025                 priv->plcp_delta_threshold = plcp;
2026         return count;
2027 }
2028
2029 static ssize_t iwl_dbgfs_rf_reset_read(struct file *file,
2030                                        char __user *user_buf,
2031                                        size_t count, loff_t *ppos)
2032 {
2033         struct iwl_priv *priv = file->private_data;
2034         int pos = 0;
2035         char buf[300];
2036         const size_t bufsz = sizeof(buf);
2037         struct iwl_rf_reset *rf_reset = &priv->rf_reset;
2038
2039         pos += scnprintf(buf + pos, bufsz - pos,
2040                         "RF reset statistics\n");
2041         pos += scnprintf(buf + pos, bufsz - pos,
2042                         "\tnumber of reset request: %d\n",
2043                         rf_reset->reset_request_count);
2044         pos += scnprintf(buf + pos, bufsz - pos,
2045                         "\tnumber of reset request success: %d\n",
2046                         rf_reset->reset_success_count);
2047         pos += scnprintf(buf + pos, bufsz - pos,
2048                         "\tnumber of reset request reject: %d\n",
2049                         rf_reset->reset_reject_count);
2050
2051         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
2052 }
2053
2054 static ssize_t iwl_dbgfs_rf_reset_write(struct file *file,
2055                                         const char __user *user_buf,
2056                                         size_t count, loff_t *ppos) {
2057
2058         struct iwl_priv *priv = file->private_data;
2059         int ret;
2060
2061         ret = iwl_force_rf_reset(priv, true);
2062         return ret ? ret : count;
2063 }
2064
2065 static ssize_t iwl_dbgfs_txfifo_flush_write(struct file *file,
2066                                         const char __user *user_buf,
2067                                         size_t count, loff_t *ppos) {
2068
2069         struct iwl_priv *priv = file->private_data;
2070         char buf[8];
2071         int buf_size;
2072         int flush;
2073
2074         memset(buf, 0, sizeof(buf));
2075         buf_size = min(count, sizeof(buf) -  1);
2076         if (copy_from_user(buf, user_buf, buf_size))
2077                 return -EFAULT;
2078         if (sscanf(buf, "%d", &flush) != 1)
2079                 return -EINVAL;
2080
2081         if (iwl_is_rfkill(priv))
2082                 return -EFAULT;
2083
2084         iwlagn_dev_txfifo_flush(priv);
2085
2086         return count;
2087 }
2088
2089 static ssize_t iwl_dbgfs_bt_traffic_read(struct file *file,
2090                                         char __user *user_buf,
2091                                         size_t count, loff_t *ppos) {
2092
2093         struct iwl_priv *priv = (struct iwl_priv *)file->private_data;
2094         int pos = 0;
2095         char buf[200];
2096         const size_t bufsz = sizeof(buf);
2097
2098         if (!priv->bt_enable_flag) {
2099                 pos += scnprintf(buf + pos, bufsz - pos, "BT coex disabled\n");
2100                 return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
2101         }
2102         pos += scnprintf(buf + pos, bufsz - pos, "BT enable flag: 0x%x\n",
2103                 priv->bt_enable_flag);
2104         pos += scnprintf(buf + pos, bufsz - pos, "BT in %s mode\n",
2105                 priv->bt_full_concurrent ? "full concurrency" : "3-wire");
2106         pos += scnprintf(buf + pos, bufsz - pos, "BT status: %s, "
2107                          "last traffic notif: %d\n",
2108                 priv->bt_status ? "On" : "Off", priv->last_bt_traffic_load);
2109         pos += scnprintf(buf + pos, bufsz - pos, "ch_announcement: %d, "
2110                          "kill_ack_mask: %x, kill_cts_mask: %x\n",
2111                 priv->bt_ch_announce, priv->kill_ack_mask,
2112                 priv->kill_cts_mask);
2113
2114         pos += scnprintf(buf + pos, bufsz - pos, "bluetooth traffic load: ");
2115         switch (priv->bt_traffic_load) {
2116         case IWL_BT_COEX_TRAFFIC_LOAD_CONTINUOUS:
2117                 pos += scnprintf(buf + pos, bufsz - pos, "Continuous\n");
2118                 break;
2119         case IWL_BT_COEX_TRAFFIC_LOAD_HIGH:
2120                 pos += scnprintf(buf + pos, bufsz - pos, "High\n");
2121                 break;
2122         case IWL_BT_COEX_TRAFFIC_LOAD_LOW:
2123                 pos += scnprintf(buf + pos, bufsz - pos, "Low\n");
2124                 break;
2125         case IWL_BT_COEX_TRAFFIC_LOAD_NONE:
2126         default:
2127                 pos += scnprintf(buf + pos, bufsz - pos, "None\n");
2128                 break;
2129         }
2130
2131         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
2132 }
2133
2134 static ssize_t iwl_dbgfs_protection_mode_read(struct file *file,
2135                                         char __user *user_buf,
2136                                         size_t count, loff_t *ppos)
2137 {
2138         struct iwl_priv *priv = (struct iwl_priv *)file->private_data;
2139
2140         int pos = 0;
2141         char buf[40];
2142         const size_t bufsz = sizeof(buf);
2143
2144         if (priv->cfg->ht_params)
2145                 pos += scnprintf(buf + pos, bufsz - pos,
2146                          "use %s for aggregation\n",
2147                          (priv->hw_params.use_rts_for_aggregation) ?
2148                                 "rts/cts" : "cts-to-self");
2149         else
2150                 pos += scnprintf(buf + pos, bufsz - pos, "N/A");
2151
2152         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
2153 }
2154
2155 static ssize_t iwl_dbgfs_protection_mode_write(struct file *file,
2156                                         const char __user *user_buf,
2157                                         size_t count, loff_t *ppos) {
2158
2159         struct iwl_priv *priv = file->private_data;
2160         char buf[8];
2161         int buf_size;
2162         int rts;
2163
2164         if (!priv->cfg->ht_params)
2165                 return -EINVAL;
2166
2167         memset(buf, 0, sizeof(buf));
2168         buf_size = min(count, sizeof(buf) -  1);
2169         if (copy_from_user(buf, user_buf, buf_size))
2170                 return -EFAULT;
2171         if (sscanf(buf, "%d", &rts) != 1)
2172                 return -EINVAL;
2173         if (rts)
2174                 priv->hw_params.use_rts_for_aggregation = true;
2175         else
2176                 priv->hw_params.use_rts_for_aggregation = false;
2177         return count;
2178 }
2179
2180 static int iwl_cmd_echo_test(struct iwl_priv *priv)
2181 {
2182         int ret;
2183         struct iwl_host_cmd cmd = {
2184                 .id = REPLY_ECHO,
2185                 .len = { 0 },
2186         };
2187
2188         ret = iwl_dvm_send_cmd(priv, &cmd);
2189         if (ret)
2190                 IWL_ERR(priv, "echo testing fail: 0X%x\n", ret);
2191         else
2192                 IWL_DEBUG_INFO(priv, "echo testing pass\n");
2193         return ret;
2194 }
2195
2196 static ssize_t iwl_dbgfs_echo_test_write(struct file *file,
2197                                         const char __user *user_buf,
2198                                         size_t count, loff_t *ppos)
2199 {
2200         struct iwl_priv *priv = file->private_data;
2201         char buf[8];
2202         int buf_size;
2203
2204         memset(buf, 0, sizeof(buf));
2205         buf_size = min(count, sizeof(buf) -  1);
2206         if (copy_from_user(buf, user_buf, buf_size))
2207                 return -EFAULT;
2208
2209         iwl_cmd_echo_test(priv);
2210         return count;
2211 }
2212
2213 #ifdef CONFIG_IWLWIFI_DEBUG
2214 static ssize_t iwl_dbgfs_log_event_read(struct file *file,
2215                                          char __user *user_buf,
2216                                          size_t count, loff_t *ppos)
2217 {
2218         struct iwl_priv *priv = file->private_data;
2219         char *buf = NULL;
2220         ssize_t ret;
2221
2222         ret = iwl_dump_nic_event_log(priv, true, &buf);
2223         if (ret > 0)
2224                 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
2225         kfree(buf);
2226         return ret;
2227 }
2228
2229 static ssize_t iwl_dbgfs_log_event_write(struct file *file,
2230                                         const char __user *user_buf,
2231                                         size_t count, loff_t *ppos)
2232 {
2233         struct iwl_priv *priv = file->private_data;
2234         u32 event_log_flag;
2235         char buf[8];
2236         int buf_size;
2237
2238         /* check that the interface is up */
2239         if (!iwl_is_ready(priv))
2240                 return -EAGAIN;
2241
2242         memset(buf, 0, sizeof(buf));
2243         buf_size = min(count, sizeof(buf) -  1);
2244         if (copy_from_user(buf, user_buf, buf_size))
2245                 return -EFAULT;
2246         if (sscanf(buf, "%d", &event_log_flag) != 1)
2247                 return -EFAULT;
2248         if (event_log_flag == 1)
2249                 iwl_dump_nic_event_log(priv, true, NULL);
2250
2251         return count;
2252 }
2253 #endif
2254
2255 static ssize_t iwl_dbgfs_calib_disabled_read(struct file *file,
2256                                          char __user *user_buf,
2257                                          size_t count, loff_t *ppos)
2258 {
2259         struct iwl_priv *priv = file->private_data;
2260         char buf[120];
2261         int pos = 0;
2262         const size_t bufsz = sizeof(buf);
2263
2264         pos += scnprintf(buf + pos, bufsz - pos,
2265                          "Sensitivity calibrations %s\n",
2266                          (priv->calib_disabled &
2267                                         IWL_SENSITIVITY_CALIB_DISABLED) ?
2268                          "DISABLED" : "ENABLED");
2269         pos += scnprintf(buf + pos, bufsz - pos,
2270                          "Chain noise calibrations %s\n",
2271                          (priv->calib_disabled &
2272                                         IWL_CHAIN_NOISE_CALIB_DISABLED) ?
2273                          "DISABLED" : "ENABLED");
2274         pos += scnprintf(buf + pos, bufsz - pos,
2275                          "Tx power calibrations %s\n",
2276                          (priv->calib_disabled &
2277                                         IWL_TX_POWER_CALIB_DISABLED) ?
2278                          "DISABLED" : "ENABLED");
2279
2280         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
2281 }
2282
2283 static ssize_t iwl_dbgfs_calib_disabled_write(struct file *file,
2284                                               const char __user *user_buf,
2285                                               size_t count, loff_t *ppos)
2286 {
2287         struct iwl_priv *priv = file->private_data;
2288         char buf[8];
2289         u32 calib_disabled;
2290         int buf_size;
2291
2292         memset(buf, 0, sizeof(buf));
2293         buf_size = min(count, sizeof(buf) - 1);
2294         if (copy_from_user(buf, user_buf, buf_size))
2295                 return -EFAULT;
2296         if (sscanf(buf, "%x", &calib_disabled) != 1)
2297                 return -EFAULT;
2298
2299         priv->calib_disabled = calib_disabled;
2300
2301         return count;
2302 }
2303
2304 static ssize_t iwl_dbgfs_fw_restart_write(struct file *file,
2305                                           const char __user *user_buf,
2306                                           size_t count, loff_t *ppos)
2307 {
2308         struct iwl_priv *priv = file->private_data;
2309         bool fw_restart = iwlwifi_mod_params.fw_restart;
2310         int __maybe_unused ret;
2311
2312         iwlwifi_mod_params.fw_restart = true;
2313
2314         mutex_lock(&priv->mutex);
2315
2316         /* take the return value to make compiler happy - it will fail anyway */
2317         ret = iwl_dvm_send_cmd_pdu(priv, REPLY_ERROR, 0, 0, NULL);
2318
2319         mutex_unlock(&priv->mutex);
2320
2321         iwlwifi_mod_params.fw_restart = fw_restart;
2322
2323         return count;
2324 }
2325
2326 DEBUGFS_READ_FILE_OPS(ucode_rx_stats);
2327 DEBUGFS_READ_FILE_OPS(ucode_tx_stats);
2328 DEBUGFS_READ_FILE_OPS(ucode_general_stats);
2329 DEBUGFS_READ_FILE_OPS(sensitivity);
2330 DEBUGFS_READ_FILE_OPS(chain_noise);
2331 DEBUGFS_READ_FILE_OPS(power_save_status);
2332 DEBUGFS_WRITE_FILE_OPS(clear_ucode_statistics);
2333 DEBUGFS_READ_WRITE_FILE_OPS(ucode_tracing);
2334 DEBUGFS_READ_WRITE_FILE_OPS(missed_beacon);
2335 DEBUGFS_READ_WRITE_FILE_OPS(plcp_delta);
2336 DEBUGFS_READ_WRITE_FILE_OPS(rf_reset);
2337 DEBUGFS_READ_FILE_OPS(rxon_flags);
2338 DEBUGFS_READ_FILE_OPS(rxon_filter_flags);
2339 DEBUGFS_WRITE_FILE_OPS(txfifo_flush);
2340 DEBUGFS_READ_FILE_OPS(ucode_bt_stats);
2341 DEBUGFS_READ_FILE_OPS(bt_traffic);
2342 DEBUGFS_READ_WRITE_FILE_OPS(protection_mode);
2343 DEBUGFS_READ_FILE_OPS(reply_tx_error);
2344 DEBUGFS_WRITE_FILE_OPS(echo_test);
2345 DEBUGFS_WRITE_FILE_OPS(fw_restart);
2346 #ifdef CONFIG_IWLWIFI_DEBUG
2347 DEBUGFS_READ_WRITE_FILE_OPS(log_event);
2348 #endif
2349 DEBUGFS_READ_WRITE_FILE_OPS(calib_disabled);
2350
2351 /*
2352  * Create the debugfs files and directories
2353  *
2354  */
2355 int iwl_dbgfs_register(struct iwl_priv *priv, struct dentry *dbgfs_dir)
2356 {
2357         struct dentry *dir_data, *dir_rf, *dir_debug;
2358
2359         priv->debugfs_dir = dbgfs_dir;
2360
2361         dir_data = debugfs_create_dir("data", dbgfs_dir);
2362         if (!dir_data)
2363                 goto err;
2364         dir_rf = debugfs_create_dir("rf", dbgfs_dir);
2365         if (!dir_rf)
2366                 goto err;
2367         dir_debug = debugfs_create_dir("debug", dbgfs_dir);
2368         if (!dir_debug)
2369                 goto err;
2370
2371         DEBUGFS_ADD_FILE(nvm, dir_data, 0400);
2372         DEBUGFS_ADD_FILE(sram, dir_data, 0600);
2373         DEBUGFS_ADD_FILE(wowlan_sram, dir_data, 0400);
2374         DEBUGFS_ADD_FILE(stations, dir_data, 0400);
2375         DEBUGFS_ADD_FILE(channels, dir_data, 0400);
2376         DEBUGFS_ADD_FILE(status, dir_data, 0400);
2377         DEBUGFS_ADD_FILE(rx_handlers, dir_data, 0600);
2378         DEBUGFS_ADD_FILE(qos, dir_data, 0400);
2379         DEBUGFS_ADD_FILE(sleep_level_override, dir_data, 0600);
2380         DEBUGFS_ADD_FILE(current_sleep_command, dir_data, 0400);
2381         DEBUGFS_ADD_FILE(thermal_throttling, dir_data, 0400);
2382         DEBUGFS_ADD_FILE(disable_ht40, dir_data, 0600);
2383         DEBUGFS_ADD_FILE(temperature, dir_data, 0400);
2384
2385         DEBUGFS_ADD_FILE(power_save_status, dir_debug, 0400);
2386         DEBUGFS_ADD_FILE(clear_ucode_statistics, dir_debug, 0200);
2387         DEBUGFS_ADD_FILE(missed_beacon, dir_debug, 0200);
2388         DEBUGFS_ADD_FILE(plcp_delta, dir_debug, 0600);
2389         DEBUGFS_ADD_FILE(rf_reset, dir_debug, 0600);
2390         DEBUGFS_ADD_FILE(ucode_rx_stats, dir_debug, 0400);
2391         DEBUGFS_ADD_FILE(ucode_tx_stats, dir_debug, 0400);
2392         DEBUGFS_ADD_FILE(ucode_general_stats, dir_debug, 0400);
2393         DEBUGFS_ADD_FILE(txfifo_flush, dir_debug, 0200);
2394         DEBUGFS_ADD_FILE(protection_mode, dir_debug, 0600);
2395         DEBUGFS_ADD_FILE(sensitivity, dir_debug, 0400);
2396         DEBUGFS_ADD_FILE(chain_noise, dir_debug, 0400);
2397         DEBUGFS_ADD_FILE(ucode_tracing, dir_debug, 0600);
2398         DEBUGFS_ADD_FILE(ucode_bt_stats, dir_debug, 0400);
2399         DEBUGFS_ADD_FILE(reply_tx_error, dir_debug, 0400);
2400         DEBUGFS_ADD_FILE(rxon_flags, dir_debug, 0200);
2401         DEBUGFS_ADD_FILE(rxon_filter_flags, dir_debug, 0200);
2402         DEBUGFS_ADD_FILE(echo_test, dir_debug, 0200);
2403         DEBUGFS_ADD_FILE(fw_restart, dir_debug, 0200);
2404 #ifdef CONFIG_IWLWIFI_DEBUG
2405         DEBUGFS_ADD_FILE(log_event, dir_debug, 0600);
2406 #endif
2407
2408         if (iwl_advanced_bt_coexist(priv))
2409                 DEBUGFS_ADD_FILE(bt_traffic, dir_debug, 0400);
2410
2411         /* Calibrations disabled/enabled status*/
2412         DEBUGFS_ADD_FILE(calib_disabled, dir_rf, 0600);
2413
2414         /*
2415          * Create a symlink with mac80211. This is not very robust, as it does
2416          * not remove the symlink created. The implicit assumption is that
2417          * when the opmode exits, mac80211 will also exit, and will remove
2418          * this symlink as part of its cleanup.
2419          */
2420         if (priv->mac80211_registered) {
2421                 char buf[100];
2422                 struct dentry *mac80211_dir, *dev_dir;
2423
2424                 dev_dir = dbgfs_dir->d_parent;
2425                 mac80211_dir = priv->hw->wiphy->debugfsdir;
2426
2427                 snprintf(buf, 100, "../../%pd2", dev_dir);
2428
2429                 if (!debugfs_create_symlink("iwlwifi", mac80211_dir, buf))
2430                         goto err;
2431         }
2432
2433         return 0;
2434
2435 err:
2436         IWL_ERR(priv, "failed to create the dvm debugfs entries\n");
2437         return -ENOMEM;
2438 }