drivers/net/wireless/iwlegacy/iwl-debugfs.c

   1 /******************************************************************************
   2  *
   3  * GPL LICENSE SUMMARY
   4  *
   5  * Copyright(c) 2008 - 2011 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 LICENSE.GPL.
  23  *
  24  * Contact Information:
  25  *  Intel Linux Wireless <ilw@linux.intel.com>
  26  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  27  *****************************************************************************/
  28 #include <linux/ieee80211.h>
  29 #include <net/mac80211.h>
  30
  31
  32 #include "iwl-debug.h"
  33 #include "common.h"
  34
  35 /* create and remove of files */
  36 #define DEBUGFS_ADD_FILE(name, parent, mode) do {                       \
  37         if (!debugfs_create_file(#name, mode, parent, il,               \
  38                          &il_dbgfs_##name##_ops))               \
  39                 goto err;                                               \
  40 } while (0)
  41
  42 #define DEBUGFS_ADD_BOOL(name, parent, ptr) do {                        \
  43         struct dentry *__tmp;                                           \
  44         __tmp = debugfs_create_bool(#name, S_IWUSR | S_IRUSR,           \
  45                                     parent, ptr);                       \
  46         if (IS_ERR(__tmp) || !__tmp)                                    \
  47                 goto err;                                               \
  48 } while (0)
  49
  50 #define DEBUGFS_ADD_X32(name, parent, ptr) do {                         \
  51         struct dentry *__tmp;                                           \
  52         __tmp = debugfs_create_x32(#name, S_IWUSR | S_IRUSR,            \
  53                                    parent, ptr);                        \
  54         if (IS_ERR(__tmp) || !__tmp)                                    \
  55                 goto err;                                               \
  56 } while (0)
  57
  58 /* file operation */
  59 #define DEBUGFS_READ_FUNC(name)                                         \
  60 static ssize_t il_dbgfs_##name##_read(struct file *file,               \
  61                                         char __user *user_buf,          \
  62                                         size_t count, loff_t *ppos);
  63
  64 #define DEBUGFS_WRITE_FUNC(name)                                        \
  65 static ssize_t il_dbgfs_##name##_write(struct file *file,              \
  66                                         const char __user *user_buf,    \
  67                                         size_t count, loff_t *ppos);
  68
  69
  70 static int
  71 il_dbgfs_open_file_generic(struct inode *inode, struct file *file)
  72 {
  73         file->private_data = inode->i_private;
  74         return 0;
  75 }
  76
  77 #define DEBUGFS_READ_FILE_OPS(name)                             \
  78         DEBUGFS_READ_FUNC(name);                                        \
  79 static const struct file_operations il_dbgfs_##name##_ops = {   \
  80         .read = il_dbgfs_##name##_read,                         \
  81         .open = il_dbgfs_open_file_generic,                     \
  82         .llseek = generic_file_llseek,                                  \
  83 };
  84
  85 #define DEBUGFS_WRITE_FILE_OPS(name)                            \
  86         DEBUGFS_WRITE_FUNC(name);                                       \
  87 static const struct file_operations il_dbgfs_##name##_ops = {   \
  88         .write = il_dbgfs_##name##_write,                       \
  89         .open = il_dbgfs_open_file_generic,                     \
  90         .llseek = generic_file_llseek,                                  \
  91 };
  92
  93 #define DEBUGFS_READ_WRITE_FILE_OPS(name)                           \
  94         DEBUGFS_READ_FUNC(name);                                        \
  95         DEBUGFS_WRITE_FUNC(name);                                       \
  96 static const struct file_operations il_dbgfs_##name##_ops = {   \
  97         .write = il_dbgfs_##name##_write,                       \
  98         .read = il_dbgfs_##name##_read,                         \
  99         .open = il_dbgfs_open_file_generic,                     \
 100         .llseek = generic_file_llseek,                                  \
 101 };
 102
 103 static ssize_t il_dbgfs_tx_stats_read(struct file *file,
 104                                                 char __user *user_buf,
 105                                                 size_t count, loff_t *ppos) {
 106
 107         struct il_priv *il = file->private_data;
 108         char *buf;
 109         int pos = 0;
 110
 111         int cnt;
 112         ssize_t ret;
 113         const size_t bufsz = 100 +
 114                 sizeof(char) * 50 * (MANAGEMENT_MAX + CONTROL_MAX);
 115         buf = kzalloc(bufsz, GFP_KERNEL);
 116         if (!buf)
 117                 return -ENOMEM;
 118         pos += scnprintf(buf + pos, bufsz - pos, "Management:\n");
 119         for (cnt = 0; cnt < MANAGEMENT_MAX; cnt++) {
 120                 pos += scnprintf(buf + pos, bufsz - pos,
 121                                  "\t%25s\t\t: %u\n",
 122                                  il_get_mgmt_string(cnt),
 123                                  il->tx_stats.mgmt[cnt]);
 124         }
 125         pos += scnprintf(buf + pos, bufsz - pos, "Control\n");
 126         for (cnt = 0; cnt < CONTROL_MAX; cnt++) {
 127                 pos += scnprintf(buf + pos, bufsz - pos,
 128                                  "\t%25s\t\t: %u\n",
 129                                  il_get_ctrl_string(cnt),
 130                                  il->tx_stats.ctrl[cnt]);
 131         }
 132         pos += scnprintf(buf + pos, bufsz - pos, "Data:\n");
 133         pos += scnprintf(buf + pos, bufsz - pos, "\tcnt: %u\n",
 134                          il->tx_stats.data_cnt);
 135         pos += scnprintf(buf + pos, bufsz - pos, "\tbytes: %llu\n",
 136                          il->tx_stats.data_bytes);
 137         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 138         kfree(buf);
 139         return ret;
 140 }
 141
 142 static ssize_t
 143 il_dbgfs_clear_traffic_stats_write(struct file *file,
 144                                         const char __user *user_buf,
 145                                         size_t count, loff_t *ppos)
 146 {
 147         struct il_priv *il = file->private_data;
 148         u32 clear_flag;
 149         char buf[8];
 150         int buf_size;
 151
 152         memset(buf, 0, sizeof(buf));
 153         buf_size = min(count, sizeof(buf) -  1);
 154         if (copy_from_user(buf, user_buf, buf_size))
 155                 return -EFAULT;
 156         if (sscanf(buf, "%x", &clear_flag) != 1)
 157                 return -EFAULT;
 158         il_clear_traffic_stats(il);
 159
 160         return count;
 161 }
 162
 163 static ssize_t il_dbgfs_rx_stats_read(struct file *file,
 164                                                 char __user *user_buf,
 165                                                 size_t count, loff_t *ppos) {
 166
 167         struct il_priv *il = file->private_data;
 168         char *buf;
 169         int pos = 0;
 170         int cnt;
 171         ssize_t ret;
 172         const size_t bufsz = 100 +
 173                 sizeof(char) * 50 * (MANAGEMENT_MAX + CONTROL_MAX);
 174         buf = kzalloc(bufsz, GFP_KERNEL);
 175         if (!buf)
 176                 return -ENOMEM;
 177
 178         pos += scnprintf(buf + pos, bufsz - pos, "Management:\n");
 179         for (cnt = 0; cnt < MANAGEMENT_MAX; cnt++) {
 180                 pos += scnprintf(buf + pos, bufsz - pos,
 181                                  "\t%25s\t\t: %u\n",
 182                                  il_get_mgmt_string(cnt),
 183                                  il->rx_stats.mgmt[cnt]);
 184         }
 185         pos += scnprintf(buf + pos, bufsz - pos, "Control:\n");
 186         for (cnt = 0; cnt < CONTROL_MAX; cnt++) {
 187                 pos += scnprintf(buf + pos, bufsz - pos,
 188                                  "\t%25s\t\t: %u\n",
 189                                  il_get_ctrl_string(cnt),
 190                                  il->rx_stats.ctrl[cnt]);
 191         }
 192         pos += scnprintf(buf + pos, bufsz - pos, "Data:\n");
 193         pos += scnprintf(buf + pos, bufsz - pos, "\tcnt: %u\n",
 194                          il->rx_stats.data_cnt);
 195         pos += scnprintf(buf + pos, bufsz - pos, "\tbytes: %llu\n",
 196                          il->rx_stats.data_bytes);
 197
 198         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 199         kfree(buf);
 200         return ret;
 201 }
 202
 203 #define BYTE1_MASK 0x000000ff;
 204 #define BYTE2_MASK 0x0000ffff;
 205 #define BYTE3_MASK 0x00ffffff;
 206 static ssize_t il_dbgfs_sram_read(struct file *file,
 207                                         char __user *user_buf,
 208                                         size_t count, loff_t *ppos)
 209 {
 210         u32 val;
 211         char *buf;
 212         ssize_t ret;
 213         int i;
 214         int pos = 0;
 215         struct il_priv *il = file->private_data;
 216         size_t bufsz;
 217
 218         /* default is to dump the entire data segment */
 219         if (!il->dbgfs_sram_offset && !il->dbgfs_sram_len) {
 220                 il->dbgfs_sram_offset = 0x800000;
 221                 if (il->ucode_type == UCODE_INIT)
 222                         il->dbgfs_sram_len = il->ucode_init_data.len;
 223                 else
 224                         il->dbgfs_sram_len = il->ucode_data.len;
 225         }
 226         bufsz =  30 + il->dbgfs_sram_len * sizeof(char) * 10;
 227         buf = kmalloc(bufsz, GFP_KERNEL);
 228         if (!buf)
 229                 return -ENOMEM;
 230         pos += scnprintf(buf + pos, bufsz - pos, "sram_len: 0x%x\n",
 231                         il->dbgfs_sram_len);
 232         pos += scnprintf(buf + pos, bufsz - pos, "sram_offset: 0x%x\n",
 233                         il->dbgfs_sram_offset);
 234         for (i = il->dbgfs_sram_len; i > 0; i -= 4) {
 235                 val = il_read_targ_mem(il, il->dbgfs_sram_offset + \
 236                                         il->dbgfs_sram_len - i);
 237                 if (i < 4) {
 238                         switch (i) {
 239                         case 1:
 240                                 val &= BYTE1_MASK;
 241                                 break;
 242                         case 2:
 243                                 val &= BYTE2_MASK;
 244                                 break;
 245                         case 3:
 246                                 val &= BYTE3_MASK;
 247                                 break;
 248                         }
 249                 }
 250                 if (!(i % 16))
 251                         pos += scnprintf(buf + pos, bufsz - pos, "\n");
 252                 pos += scnprintf(buf + pos, bufsz - pos, "0x%08x ", val);
 253         }
 254         pos += scnprintf(buf + pos, bufsz - pos, "\n");
 255
 256         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 257         kfree(buf);
 258         return ret;
 259 }
 260
 261 static ssize_t il_dbgfs_sram_write(struct file *file,
 262                                         const char __user *user_buf,
 263                                         size_t count, loff_t *ppos)
 264 {
 265         struct il_priv *il = file->private_data;
 266         char buf[64];
 267         int buf_size;
 268         u32 offset, len;
 269
 270         memset(buf, 0, sizeof(buf));
 271         buf_size = min(count, sizeof(buf) -  1);
 272         if (copy_from_user(buf, user_buf, buf_size))
 273                 return -EFAULT;
 274
 275         if (sscanf(buf, "%x,%x", &offset, &len) == 2) {
 276                 il->dbgfs_sram_offset = offset;
 277                 il->dbgfs_sram_len = len;
 278         } else {
 279                 il->dbgfs_sram_offset = 0;
 280                 il->dbgfs_sram_len = 0;
 281         }
 282
 283         return count;
 284 }
 285
 286 static ssize_t
 287 il_dbgfs_stations_read(struct file *file, char __user *user_buf,
 288                                         size_t count, loff_t *ppos)
 289 {
 290         struct il_priv *il = file->private_data;
 291         struct il_station_entry *station;
 292         int max_sta = il->hw_params.max_stations;
 293         char *buf;
 294         int i, j, pos = 0;
 295         ssize_t ret;
 296         /* Add 30 for initial string */
 297         const size_t bufsz = 30 + sizeof(char) * 500 * (il->num_stations);
 298
 299         buf = kmalloc(bufsz, GFP_KERNEL);
 300         if (!buf)
 301                 return -ENOMEM;
 302
 303         pos += scnprintf(buf + pos, bufsz - pos, "num of stations: %d\n\n",
 304                         il->num_stations);
 305
 306         for (i = 0; i < max_sta; i++) {
 307                 station = &il->stations[i];
 308                 if (!station->used)
 309                         continue;
 310                 pos += scnprintf(buf + pos, bufsz - pos,
 311                                  "station %d - addr: %pM, flags: %#x\n",
 312                                  i, station->sta.sta.addr,
 313                                  station->sta.station_flags_msk);
 314                 pos += scnprintf(buf + pos, bufsz - pos,
 315                                 "TID\tseq_num\ttxq_id\tframes\ttfds\t");
 316                 pos += scnprintf(buf + pos, bufsz - pos,
 317                                 "start_idx\tbitmap\t\t\trate_n_flags\n");
 318
 319                 for (j = 0; j < MAX_TID_COUNT; j++) {
 320                         pos += scnprintf(buf + pos, bufsz - pos,
 321                                 "%d:\t%#x\t%#x\t%u\t%u\t%u\t\t%#.16llx\t%#x",
 322                                 j, station->tid[j].seq_number,
 323                                 station->tid[j].agg.txq_id,
 324                                 station->tid[j].agg.frame_count,
 325                                 station->tid[j].tfds_in_queue,
 326                                 station->tid[j].agg.start_idx,
 327                                 station->tid[j].agg.bitmap,
 328                                 station->tid[j].agg.rate_n_flags);
 329
 330                         if (station->tid[j].agg.wait_for_ba)
 331                                 pos += scnprintf(buf + pos, bufsz - pos,
 332                                                  " - waitforba");
 333                         pos += scnprintf(buf + pos, bufsz - pos, "\n");
 334                 }
 335
 336                 pos += scnprintf(buf + pos, bufsz - pos, "\n");
 337         }
 338
 339         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 340         kfree(buf);
 341         return ret;
 342 }
 343
 344 static ssize_t il_dbgfs_nvm_read(struct file *file,
 345                                        char __user *user_buf,
 346                                        size_t count,
 347                                        loff_t *ppos)
 348 {
 349         ssize_t ret;
 350         struct il_priv *il = file->private_data;
 351         int pos = 0, ofs = 0, buf_size = 0;
 352         const u8 *ptr;
 353         char *buf;
 354         u16 eeprom_ver;
 355         size_t eeprom_len = il->cfg->base_params->eeprom_size;
 356         buf_size = 4 * eeprom_len + 256;
 357
 358         if (eeprom_len % 16) {
 359                 IL_ERR("NVM size is not multiple of 16.\n");
 360                 return -ENODATA;
 361         }
 362
 363         ptr = il->eeprom;
 364         if (!ptr) {
 365                 IL_ERR("Invalid EEPROM memory\n");
 366                 return -ENOMEM;
 367         }
 368
 369         /* 4 characters for byte 0xYY */
 370         buf = kzalloc(buf_size, GFP_KERNEL);
 371         if (!buf) {
 372                 IL_ERR("Can not allocate Buffer\n");
 373                 return -ENOMEM;
 374         }
 375         eeprom_ver = il_eeprom_query16(il, EEPROM_VERSION);
 376         pos += scnprintf(buf + pos, buf_size - pos, "EEPROM "
 377                         "version: 0x%x\n", eeprom_ver);
 378         for (ofs = 0 ; ofs < eeprom_len ; ofs += 16) {
 379                 pos += scnprintf(buf + pos, buf_size - pos, "0x%.4x ", ofs);
 380                 hex_dump_to_buffer(ptr + ofs, 16 , 16, 2, buf + pos,
 381                                    buf_size - pos, 0);
 382                 pos += strlen(buf + pos);
 383                 if (buf_size - pos > 0)
 384                         buf[pos++] = '\n';
 385         }
 386
 387         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 388         kfree(buf);
 389         return ret;
 390 }
 391
 392 static ssize_t
 393 il_dbgfs_channels_read(struct file *file, char __user *user_buf,
 394                                        size_t count, loff_t *ppos)
 395 {
 396         struct il_priv *il = file->private_data;
 397         struct ieee80211_channel *channels = NULL;
 398         const struct ieee80211_supported_band *supp_band = NULL;
 399         int pos = 0, i, bufsz = PAGE_SIZE;
 400         char *buf;
 401         ssize_t ret;
 402
 403         if (!test_bit(S_GEO_CONFIGURED, &il->status))
 404                 return -EAGAIN;
 405
 406         buf = kzalloc(bufsz, GFP_KERNEL);
 407         if (!buf) {
 408                 IL_ERR("Can not allocate Buffer\n");
 409                 return -ENOMEM;
 410         }
 411
 412         supp_band = il_get_hw_mode(il, IEEE80211_BAND_2GHZ);
 413         if (supp_band) {
 414                 channels = supp_band->channels;
 415
 416                 pos += scnprintf(buf + pos, bufsz - pos,
 417                                 "Displaying %d channels in 2.4GHz band 802.11bg):\n",
 418                                 supp_band->n_channels);
 419
 420                 for (i = 0; i < supp_band->n_channels; i++)
 421                         pos += scnprintf(buf + pos, bufsz - pos,
 422                                 "%d: %ddBm: BSS%s%s, %s.\n",
 423                                 channels[i].hw_value,
 424                                 channels[i].max_power,
 425                                 channels[i].flags & IEEE80211_CHAN_RADAR ?
 426                                 " (IEEE 802.11h required)" : "",
 427                                 ((channels[i].flags & IEEE80211_CHAN_NO_IBSS)
 428                                 || (channels[i].flags &
 429                                 IEEE80211_CHAN_RADAR)) ? "" :
 430                                 ", IBSS",
 431                                 channels[i].flags &
 432                                 IEEE80211_CHAN_PASSIVE_SCAN ?
 433                                 "passive only" : "active/passive");
 434         }
 435         supp_band = il_get_hw_mode(il, IEEE80211_BAND_5GHZ);
 436         if (supp_band) {
 437                 channels = supp_band->channels;
 438
 439                 pos += scnprintf(buf + pos, bufsz - pos,
 440                                 "Displaying %d channels in 5.2GHz band (802.11a)\n",
 441                                 supp_band->n_channels);
 442
 443                 for (i = 0; i < supp_band->n_channels; i++)
 444                         pos += scnprintf(buf + pos, bufsz - pos,
 445                                 "%d: %ddBm: BSS%s%s, %s.\n",
 446                                 channels[i].hw_value,
 447                                 channels[i].max_power,
 448                                 channels[i].flags & IEEE80211_CHAN_RADAR ?
 449                                 " (IEEE 802.11h required)" : "",
 450                                 ((channels[i].flags & IEEE80211_CHAN_NO_IBSS)
 451                                 || (channels[i].flags &
 452                                 IEEE80211_CHAN_RADAR)) ? "" :
 453                                 ", IBSS",
 454                                 channels[i].flags &
 455                                 IEEE80211_CHAN_PASSIVE_SCAN ?
 456                                 "passive only" : "active/passive");
 457         }
 458         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 459         kfree(buf);
 460         return ret;
 461 }
 462
 463 static ssize_t il_dbgfs_status_read(struct file *file,
 464                                                 char __user *user_buf,
 465                                                 size_t count, loff_t *ppos) {
 466
 467         struct il_priv *il = file->private_data;
 468         char buf[512];
 469         int pos = 0;
 470         const size_t bufsz = sizeof(buf);
 471
 472         pos += scnprintf(buf + pos, bufsz - pos, "S_HCMD_ACTIVE:\t %d\n",
 473                 test_bit(S_HCMD_ACTIVE, &il->status));
 474         pos += scnprintf(buf + pos, bufsz - pos, "S_INT_ENABLED:\t %d\n",
 475                 test_bit(S_INT_ENABLED, &il->status));
 476         pos += scnprintf(buf + pos, bufsz - pos, "S_RF_KILL_HW:\t %d\n",
 477                 test_bit(S_RF_KILL_HW, &il->status));
 478         pos += scnprintf(buf + pos, bufsz - pos, "S_CT_KILL:\t\t %d\n",
 479                 test_bit(S_CT_KILL, &il->status));
 480         pos += scnprintf(buf + pos, bufsz - pos, "S_INIT:\t\t %d\n",
 481                 test_bit(S_INIT, &il->status));
 482         pos += scnprintf(buf + pos, bufsz - pos, "S_ALIVE:\t\t %d\n",
 483                 test_bit(S_ALIVE, &il->status));
 484         pos += scnprintf(buf + pos, bufsz - pos, "S_READY:\t\t %d\n",
 485                 test_bit(S_READY, &il->status));
 486         pos += scnprintf(buf + pos, bufsz - pos, "S_TEMPERATURE:\t %d\n",
 487                 test_bit(S_TEMPERATURE, &il->status));
 488         pos += scnprintf(buf + pos, bufsz - pos, "S_GEO_CONFIGURED:\t %d\n",
 489                 test_bit(S_GEO_CONFIGURED, &il->status));
 490         pos += scnprintf(buf + pos, bufsz - pos, "S_EXIT_PENDING:\t %d\n",
 491                 test_bit(S_EXIT_PENDING, &il->status));
 492         pos += scnprintf(buf + pos, bufsz - pos, "S_STATS:\t %d\n",
 493                 test_bit(S_STATS, &il->status));
 494         pos += scnprintf(buf + pos, bufsz - pos, "S_SCANNING:\t %d\n",
 495                 test_bit(S_SCANNING, &il->status));
 496         pos += scnprintf(buf + pos, bufsz - pos, "S_SCAN_ABORTING:\t %d\n",
 497                 test_bit(S_SCAN_ABORTING, &il->status));
 498         pos += scnprintf(buf + pos, bufsz - pos, "S_SCAN_HW:\t\t %d\n",
 499                 test_bit(S_SCAN_HW, &il->status));
 500         pos += scnprintf(buf + pos, bufsz - pos, "S_POWER_PMI:\t %d\n",
 501                 test_bit(S_POWER_PMI, &il->status));
 502         pos += scnprintf(buf + pos, bufsz - pos, "S_FW_ERROR:\t %d\n",
 503                 test_bit(S_FW_ERROR, &il->status));
 504         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 505 }
 506
 507 static ssize_t il_dbgfs_interrupt_read(struct file *file,
 508                                         char __user *user_buf,
 509                                         size_t count, loff_t *ppos) {
 510
 511         struct il_priv *il = file->private_data;
 512         int pos = 0;
 513         int cnt = 0;
 514         char *buf;
 515         int bufsz = 24 * 64; /* 24 items * 64 char per item */
 516         ssize_t ret;
 517
 518         buf = kzalloc(bufsz, GFP_KERNEL);
 519         if (!buf) {
 520                 IL_ERR("Can not allocate Buffer\n");
 521                 return -ENOMEM;
 522         }
 523
 524         pos += scnprintf(buf + pos, bufsz - pos,
 525                         "Interrupt Statistics Report:\n");
 526
 527         pos += scnprintf(buf + pos, bufsz - pos, "HW Error:\t\t\t %u\n",
 528                 il->isr_stats.hw);
 529         pos += scnprintf(buf + pos, bufsz - pos, "SW Error:\t\t\t %u\n",
 530                 il->isr_stats.sw);
 531         if (il->isr_stats.sw || il->isr_stats.hw) {
 532                 pos += scnprintf(buf + pos, bufsz - pos,
 533                         "\tLast Restarting Code:  0x%X\n",
 534                         il->isr_stats.err_code);
 535         }
 536 #ifdef CONFIG_IWLEGACY_DEBUG
 537         pos += scnprintf(buf + pos, bufsz - pos, "Frame transmitted:\t\t %u\n",
 538                 il->isr_stats.sch);
 539         pos += scnprintf(buf + pos, bufsz - pos, "Alive interrupt:\t\t %u\n",
 540                 il->isr_stats.alive);
 541 #endif
 542         pos += scnprintf(buf + pos, bufsz - pos,
 543                 "HW RF KILL switch toggled:\t %u\n",
 544                 il->isr_stats.rfkill);
 545
 546         pos += scnprintf(buf + pos, bufsz - pos, "CT KILL:\t\t\t %u\n",
 547                 il->isr_stats.ctkill);
 548
 549         pos += scnprintf(buf + pos, bufsz - pos, "Wakeup Interrupt:\t\t %u\n",
 550                 il->isr_stats.wakeup);
 551
 552         pos += scnprintf(buf + pos, bufsz - pos,
 553                 "Rx command responses:\t\t %u\n",
 554                 il->isr_stats.rx);
 555         for (cnt = 0; cnt < IL_CN_MAX; cnt++) {
 556                 if (il->isr_stats.handlers[cnt] > 0)
 557                         pos += scnprintf(buf + pos, bufsz - pos,
 558                                 "\tRx handler[%36s]:\t\t %u\n",
 559                                 il_get_cmd_string(cnt),
 560                                 il->isr_stats.handlers[cnt]);
 561         }
 562
 563         pos += scnprintf(buf + pos, bufsz - pos, "Tx/FH interrupt:\t\t %u\n",
 564                 il->isr_stats.tx);
 565
 566         pos += scnprintf(buf + pos, bufsz - pos, "Unexpected INTA:\t\t %u\n",
 567                 il->isr_stats.unhandled);
 568
 569         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 570         kfree(buf);
 571         return ret;
 572 }
 573
 574 static ssize_t il_dbgfs_interrupt_write(struct file *file,
 575                                          const char __user *user_buf,
 576                                          size_t count, loff_t *ppos)
 577 {
 578         struct il_priv *il = file->private_data;
 579         char buf[8];
 580         int buf_size;
 581         u32 reset_flag;
 582
 583         memset(buf, 0, sizeof(buf));
 584         buf_size = min(count, sizeof(buf) -  1);
 585         if (copy_from_user(buf, user_buf, buf_size))
 586                 return -EFAULT;
 587         if (sscanf(buf, "%x", &reset_flag) != 1)
 588                 return -EFAULT;
 589         if (reset_flag == 0)
 590                 il_clear_isr_stats(il);
 591
 592         return count;
 593 }
 594
 595 static ssize_t
 596 il_dbgfs_qos_read(struct file *file, char __user *user_buf,
 597                                        size_t count, loff_t *ppos)
 598 {
 599         struct il_priv *il = file->private_data;
 600         struct il_rxon_context *ctx = &il->ctx;
 601         int pos = 0, i;
 602         char buf[256];
 603         const size_t bufsz = sizeof(buf);
 604
 605         pos += scnprintf(buf + pos, bufsz - pos, "context %d:\n",
 606                          ctx->ctxid);
 607         for (i = 0; i < AC_NUM; i++) {
 608                 pos += scnprintf(buf + pos, bufsz - pos,
 609                         "\tcw_min\tcw_max\taifsn\ttxop\n");
 610                 pos += scnprintf(buf + pos, bufsz - pos,
 611                         "AC[%d]\t%u\t%u\t%u\t%u\n", i,
 612                         ctx->qos_data.def_qos_parm.ac[i].cw_min,
 613                         ctx->qos_data.def_qos_parm.ac[i].cw_max,
 614                         ctx->qos_data.def_qos_parm.ac[i].aifsn,
 615                         ctx->qos_data.def_qos_parm.ac[i].edca_txop);
 616         }
 617
 618         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 619 }
 620
 621 static ssize_t il_dbgfs_disable_ht40_write(struct file *file,
 622                                          const char __user *user_buf,
 623                                          size_t count, loff_t *ppos)
 624 {
 625         struct il_priv *il = file->private_data;
 626         char buf[8];
 627         int buf_size;
 628         int ht40;
 629
 630         memset(buf, 0, sizeof(buf));
 631         buf_size = min(count, sizeof(buf) -  1);
 632         if (copy_from_user(buf, user_buf, buf_size))
 633                 return -EFAULT;
 634         if (sscanf(buf, "%d", &ht40) != 1)
 635                 return -EFAULT;
 636         if (!il_is_any_associated(il))
 637                 il->disable_ht40 = ht40 ? true : false;
 638         else {
 639                 IL_ERR("Sta associated with AP - "
 640                         "Change to 40MHz channel support is not allowed\n");
 641                 return -EINVAL;
 642         }
 643
 644         return count;
 645 }
 646
 647 static ssize_t il_dbgfs_disable_ht40_read(struct file *file,
 648                                          char __user *user_buf,
 649                                          size_t count, loff_t *ppos)
 650 {
 651         struct il_priv *il = file->private_data;
 652         char buf[100];
 653         int pos = 0;
 654         const size_t bufsz = sizeof(buf);
 655
 656         pos += scnprintf(buf + pos, bufsz - pos,
 657                         "11n 40MHz Mode: %s\n",
 658                         il->disable_ht40 ? "Disabled" : "Enabled");
 659         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 660 }
 661
 662 DEBUGFS_READ_WRITE_FILE_OPS(sram);
 663 DEBUGFS_READ_FILE_OPS(nvm);
 664 DEBUGFS_READ_FILE_OPS(stations);
 665 DEBUGFS_READ_FILE_OPS(channels);
 666 DEBUGFS_READ_FILE_OPS(status);
 667 DEBUGFS_READ_WRITE_FILE_OPS(interrupt);
 668 DEBUGFS_READ_FILE_OPS(qos);
 669 DEBUGFS_READ_WRITE_FILE_OPS(disable_ht40);
 670
 671 static ssize_t il_dbgfs_traffic_log_read(struct file *file,
 672                                          char __user *user_buf,
 673                                          size_t count, loff_t *ppos)
 674 {
 675         struct il_priv *il = file->private_data;
 676         int pos = 0, ofs = 0;
 677         int cnt = 0, entry;
 678         struct il_tx_queue *txq;
 679         struct il_queue *q;
 680         struct il_rx_queue *rxq = &il->rxq;
 681         char *buf;
 682         int bufsz = ((IL_TRAFFIC_ENTRIES * IL_TRAFFIC_ENTRY_SIZE * 64) * 2) +
 683                 (il->cfg->base_params->num_of_queues * 32 * 8) + 400;
 684         const u8 *ptr;
 685         ssize_t ret;
 686
 687         if (!il->txq) {
 688                 IL_ERR("txq not ready\n");
 689                 return -EAGAIN;
 690         }
 691         buf = kzalloc(bufsz, GFP_KERNEL);
 692         if (!buf) {
 693                 IL_ERR("Can not allocate buffer\n");
 694                 return -ENOMEM;
 695         }
 696         pos += scnprintf(buf + pos, bufsz - pos, "Tx Queue\n");
 697         for (cnt = 0; cnt < il->hw_params.max_txq_num; cnt++) {
 698                 txq = &il->txq[cnt];
 699                 q = &txq->q;
 700                 pos += scnprintf(buf + pos, bufsz - pos,
 701                                 "q[%d]: read_ptr: %u, write_ptr: %u\n",
 702                                 cnt, q->read_ptr, q->write_ptr);
 703         }
 704         if (il->tx_traffic && (il_debug_level & IL_DL_TX)) {
 705                 ptr = il->tx_traffic;
 706                 pos += scnprintf(buf + pos, bufsz - pos,
 707                                 "Tx Traffic idx: %u\n", il->tx_traffic_idx);
 708                 for (cnt = 0, ofs = 0; cnt < IL_TRAFFIC_ENTRIES; cnt++) {
 709                         for (entry = 0; entry < IL_TRAFFIC_ENTRY_SIZE / 16;
 710                              entry++,  ofs += 16) {
 711                                 pos += scnprintf(buf + pos, bufsz - pos,
 712                                                 "0x%.4x ", ofs);
 713                                 hex_dump_to_buffer(ptr + ofs, 16, 16, 2,
 714                                                    buf + pos, bufsz - pos, 0);
 715                                 pos += strlen(buf + pos);
 716                                 if (bufsz - pos > 0)
 717                                         buf[pos++] = '\n';
 718                         }
 719                 }
 720         }
 721
 722         pos += scnprintf(buf + pos, bufsz - pos, "Rx Queue\n");
 723         pos += scnprintf(buf + pos, bufsz - pos,
 724                         "read: %u, write: %u\n",
 725                          rxq->read, rxq->write);
 726
 727         if (il->rx_traffic && (il_debug_level & IL_DL_RX)) {
 728                 ptr = il->rx_traffic;
 729                 pos += scnprintf(buf + pos, bufsz - pos,
 730                                 "Rx Traffic idx: %u\n", il->rx_traffic_idx);
 731                 for (cnt = 0, ofs = 0; cnt < IL_TRAFFIC_ENTRIES; cnt++) {
 732                         for (entry = 0; entry < IL_TRAFFIC_ENTRY_SIZE / 16;
 733                              entry++,  ofs += 16) {
 734                                 pos += scnprintf(buf + pos, bufsz - pos,
 735                                                 "0x%.4x ", ofs);
 736                                 hex_dump_to_buffer(ptr + ofs, 16, 16, 2,
 737                                                    buf + pos, bufsz - pos, 0);
 738                                 pos += strlen(buf + pos);
 739                                 if (bufsz - pos > 0)
 740                                         buf[pos++] = '\n';
 741                         }
 742                 }
 743         }
 744
 745         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 746         kfree(buf);
 747         return ret;
 748 }
 749
 750 static ssize_t il_dbgfs_traffic_log_write(struct file *file,
 751                                          const char __user *user_buf,
 752                                          size_t count, loff_t *ppos)
 753 {
 754         struct il_priv *il = file->private_data;
 755         char buf[8];
 756         int buf_size;
 757         int traffic_log;
 758
 759         memset(buf, 0, sizeof(buf));
 760         buf_size = min(count, sizeof(buf) -  1);
 761         if (copy_from_user(buf, user_buf, buf_size))
 762                 return -EFAULT;
 763         if (sscanf(buf, "%d", &traffic_log) != 1)
 764                 return -EFAULT;
 765         if (traffic_log == 0)
 766                 il_reset_traffic_log(il);
 767
 768         return count;
 769 }
 770
 771 static ssize_t il_dbgfs_tx_queue_read(struct file *file,
 772                                                 char __user *user_buf,
 773                                                 size_t count, loff_t *ppos) {
 774
 775         struct il_priv *il = file->private_data;
 776         struct il_tx_queue *txq;
 777         struct il_queue *q;
 778         char *buf;
 779         int pos = 0;
 780         int cnt;
 781         int ret;
 782         const size_t bufsz = sizeof(char) * 64 *
 783                                 il->cfg->base_params->num_of_queues;
 784
 785         if (!il->txq) {
 786                 IL_ERR("txq not ready\n");
 787                 return -EAGAIN;
 788         }
 789         buf = kzalloc(bufsz, GFP_KERNEL);
 790         if (!buf)
 791                 return -ENOMEM;
 792
 793         for (cnt = 0; cnt < il->hw_params.max_txq_num; cnt++) {
 794                 txq = &il->txq[cnt];
 795                 q = &txq->q;
 796                 pos += scnprintf(buf + pos, bufsz - pos,
 797                                 "hwq %.2d: read=%u write=%u stop=%d"
 798                                 " swq_id=%#.2x (ac %d/hwq %d)\n",
 799                                 cnt, q->read_ptr, q->write_ptr,
 800                                 !!test_bit(cnt, il->queue_stopped),
 801                                 txq->swq_id, txq->swq_id & 3,
 802                                 (txq->swq_id >> 2) & 0x1f);
 803                 if (cnt >= 4)
 804                         continue;
 805                 /* for the ACs, display the stop count too */
 806                 pos += scnprintf(buf + pos, bufsz - pos,
 807                                 "        stop-count: %d\n",
 808                                 atomic_read(&il->queue_stop_count[cnt]));
 809         }
 810         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 811         kfree(buf);
 812         return ret;
 813 }
 814
 815 static ssize_t il_dbgfs_rx_queue_read(struct file *file,
 816                                                 char __user *user_buf,
 817                                                 size_t count, loff_t *ppos) {
 818
 819         struct il_priv *il = file->private_data;
 820         struct il_rx_queue *rxq = &il->rxq;
 821         char buf[256];
 822         int pos = 0;
 823         const size_t bufsz = sizeof(buf);
 824
 825         pos += scnprintf(buf + pos, bufsz - pos, "read: %u\n",
 826                                                 rxq->read);
 827         pos += scnprintf(buf + pos, bufsz - pos, "write: %u\n",
 828                                                 rxq->write);
 829         pos += scnprintf(buf + pos, bufsz - pos, "free_count: %u\n",
 830                                                 rxq->free_count);
 831         if (rxq->rb_stts) {
 832                 pos += scnprintf(buf + pos, bufsz - pos, "closed_rb_num: %u\n",
 833                          le16_to_cpu(rxq->rb_stts->closed_rb_num) &  0x0FFF);
 834         } else {
 835                 pos += scnprintf(buf + pos, bufsz - pos,
 836                                         "closed_rb_num: Not Allocated\n");
 837         }
 838         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 839 }
 840
 841 static ssize_t il_dbgfs_ucode_rx_stats_read(struct file *file,
 842                                         char __user *user_buf,
 843                                         size_t count, loff_t *ppos)
 844 {
 845         struct il_priv *il = file->private_data;
 846         return il->cfg->ops->lib->debugfs_ops.rx_stats_read(file,
 847                         user_buf, count, ppos);
 848 }
 849
 850 static ssize_t il_dbgfs_ucode_tx_stats_read(struct file *file,
 851                                         char __user *user_buf,
 852                                         size_t count, loff_t *ppos)
 853 {
 854         struct il_priv *il = file->private_data;
 855         return il->cfg->ops->lib->debugfs_ops.tx_stats_read(file,
 856                         user_buf, count, ppos);
 857 }
 858
 859 static ssize_t il_dbgfs_ucode_general_stats_read(struct file *file,
 860                                         char __user *user_buf,
 861                                         size_t count, loff_t *ppos)
 862 {
 863         struct il_priv *il = file->private_data;
 864         return il->cfg->ops->lib->debugfs_ops.general_stats_read(file,
 865                         user_buf, count, ppos);
 866 }
 867
 868 static ssize_t il_dbgfs_sensitivity_read(struct file *file,
 869                                         char __user *user_buf,
 870                                         size_t count, loff_t *ppos) {
 871
 872         struct il_priv *il = file->private_data;
 873         int pos = 0;
 874         int cnt = 0;
 875         char *buf;
 876         int bufsz = sizeof(struct il_sensitivity_data) * 4 + 100;
 877         ssize_t ret;
 878         struct il_sensitivity_data *data;
 879
 880         data = &il->sensitivity_data;
 881         buf = kzalloc(bufsz, GFP_KERNEL);
 882         if (!buf) {
 883                 IL_ERR("Can not allocate Buffer\n");
 884                 return -ENOMEM;
 885         }
 886
 887         pos += scnprintf(buf + pos, bufsz - pos, "auto_corr_ofdm:\t\t\t %u\n",
 888                         data->auto_corr_ofdm);
 889         pos += scnprintf(buf + pos, bufsz - pos,
 890                         "auto_corr_ofdm_mrc:\t\t %u\n",
 891                         data->auto_corr_ofdm_mrc);
 892         pos += scnprintf(buf + pos, bufsz - pos, "auto_corr_ofdm_x1:\t\t %u\n",
 893                         data->auto_corr_ofdm_x1);
 894         pos += scnprintf(buf + pos, bufsz - pos,
 895                         "auto_corr_ofdm_mrc_x1:\t\t %u\n",
 896                         data->auto_corr_ofdm_mrc_x1);
 897         pos += scnprintf(buf + pos, bufsz - pos, "auto_corr_cck:\t\t\t %u\n",
 898                         data->auto_corr_cck);
 899         pos += scnprintf(buf + pos, bufsz - pos, "auto_corr_cck_mrc:\t\t %u\n",
 900                         data->auto_corr_cck_mrc);
 901         pos += scnprintf(buf + pos, bufsz - pos,
 902                         "last_bad_plcp_cnt_ofdm:\t\t %u\n",
 903                         data->last_bad_plcp_cnt_ofdm);
 904         pos += scnprintf(buf + pos, bufsz - pos, "last_fa_cnt_ofdm:\t\t %u\n",
 905                         data->last_fa_cnt_ofdm);
 906         pos += scnprintf(buf + pos, bufsz - pos,
 907                         "last_bad_plcp_cnt_cck:\t\t %u\n",
 908                         data->last_bad_plcp_cnt_cck);
 909         pos += scnprintf(buf + pos, bufsz - pos, "last_fa_cnt_cck:\t\t %u\n",
 910                         data->last_fa_cnt_cck);
 911         pos += scnprintf(buf + pos, bufsz - pos, "nrg_curr_state:\t\t\t %u\n",
 912                         data->nrg_curr_state);
 913         pos += scnprintf(buf + pos, bufsz - pos, "nrg_prev_state:\t\t\t %u\n",
 914                         data->nrg_prev_state);
 915         pos += scnprintf(buf + pos, bufsz - pos, "nrg_value:\t\t\t");
 916         for (cnt = 0; cnt < 10; cnt++) {
 917                 pos += scnprintf(buf + pos, bufsz - pos, " %u",
 918                                 data->nrg_value[cnt]);
 919         }
 920         pos += scnprintf(buf + pos, bufsz - pos, "\n");
 921         pos += scnprintf(buf + pos, bufsz - pos, "nrg_silence_rssi:\t\t");
 922         for (cnt = 0; cnt < NRG_NUM_PREV_STAT_L; cnt++) {
 923                 pos += scnprintf(buf + pos, bufsz - pos, " %u",
 924                                 data->nrg_silence_rssi[cnt]);
 925         }
 926         pos += scnprintf(buf + pos, bufsz - pos, "\n");
 927         pos += scnprintf(buf + pos, bufsz - pos, "nrg_silence_ref:\t\t %u\n",
 928                         data->nrg_silence_ref);
 929         pos += scnprintf(buf + pos, bufsz - pos, "nrg_energy_idx:\t\t\t %u\n",
 930                         data->nrg_energy_idx);
 931         pos += scnprintf(buf + pos, bufsz - pos, "nrg_silence_idx:\t\t %u\n",
 932                         data->nrg_silence_idx);
 933         pos += scnprintf(buf + pos, bufsz - pos, "nrg_th_cck:\t\t\t %u\n",
 934                         data->nrg_th_cck);
 935         pos += scnprintf(buf + pos, bufsz - pos,
 936                         "nrg_auto_corr_silence_diff:\t %u\n",
 937                         data->nrg_auto_corr_silence_diff);
 938         pos += scnprintf(buf + pos, bufsz - pos, "num_in_cck_no_fa:\t\t %u\n",
 939                         data->num_in_cck_no_fa);
 940         pos += scnprintf(buf + pos, bufsz - pos, "nrg_th_ofdm:\t\t\t %u\n",
 941                         data->nrg_th_ofdm);
 942
 943         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 944         kfree(buf);
 945         return ret;
 946 }
 947
 948
 949 static ssize_t il_dbgfs_chain_noise_read(struct file *file,
 950                                         char __user *user_buf,
 951                                         size_t count, loff_t *ppos) {
 952
 953         struct il_priv *il = file->private_data;
 954         int pos = 0;
 955         int cnt = 0;
 956         char *buf;
 957         int bufsz = sizeof(struct il_chain_noise_data) * 4 + 100;
 958         ssize_t ret;
 959         struct il_chain_noise_data *data;
 960
 961         data = &il->chain_noise_data;
 962         buf = kzalloc(bufsz, GFP_KERNEL);
 963         if (!buf) {
 964                 IL_ERR("Can not allocate Buffer\n");
 965                 return -ENOMEM;
 966         }
 967
 968         pos += scnprintf(buf + pos, bufsz - pos, "active_chains:\t\t\t %u\n",
 969                         data->active_chains);
 970         pos += scnprintf(buf + pos, bufsz - pos, "chain_noise_a:\t\t\t %u\n",
 971                         data->chain_noise_a);
 972         pos += scnprintf(buf + pos, bufsz - pos, "chain_noise_b:\t\t\t %u\n",
 973                         data->chain_noise_b);
 974         pos += scnprintf(buf + pos, bufsz - pos, "chain_noise_c:\t\t\t %u\n",
 975                         data->chain_noise_c);
 976         pos += scnprintf(buf + pos, bufsz - pos, "chain_signal_a:\t\t\t %u\n",
 977                         data->chain_signal_a);
 978         pos += scnprintf(buf + pos, bufsz - pos, "chain_signal_b:\t\t\t %u\n",
 979                         data->chain_signal_b);
 980         pos += scnprintf(buf + pos, bufsz - pos, "chain_signal_c:\t\t\t %u\n",
 981                         data->chain_signal_c);
 982         pos += scnprintf(buf + pos, bufsz - pos, "beacon_count:\t\t\t %u\n",
 983                         data->beacon_count);
 984
 985         pos += scnprintf(buf + pos, bufsz - pos, "disconn_array:\t\t\t");
 986         for (cnt = 0; cnt < NUM_RX_CHAINS; cnt++) {
 987                 pos += scnprintf(buf + pos, bufsz - pos, " %u",
 988                                 data->disconn_array[cnt]);
 989         }
 990         pos += scnprintf(buf + pos, bufsz - pos, "\n");
 991         pos += scnprintf(buf + pos, bufsz - pos, "delta_gain_code:\t\t");
 992         for (cnt = 0; cnt < NUM_RX_CHAINS; cnt++) {
 993                 pos += scnprintf(buf + pos, bufsz - pos, " %u",
 994                                 data->delta_gain_code[cnt]);
 995         }
 996         pos += scnprintf(buf + pos, bufsz - pos, "\n");
 997         pos += scnprintf(buf + pos, bufsz - pos, "radio_write:\t\t\t %u\n",
 998                         data->radio_write);
 999         pos += scnprintf(buf + pos, bufsz - pos, "state:\t\t\t\t %u\n",
1000                         data->state);
1001
1002         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
1003         kfree(buf);
1004         return ret;
1005 }
1006
1007 static ssize_t il_dbgfs_power_save_status_read(struct file *file,
1008                                                     char __user *user_buf,
1009                                                     size_t count, loff_t *ppos)
1010 {
1011         struct il_priv *il = file->private_data;
1012         char buf[60];
1013         int pos = 0;
1014         const size_t bufsz = sizeof(buf);
1015         u32 pwrsave_status;
1016
1017         pwrsave_status = _il_rd(il, CSR_GP_CNTRL) &
1018                         CSR_GP_REG_POWER_SAVE_STATUS_MSK;
1019
1020         pos += scnprintf(buf + pos, bufsz - pos, "Power Save Status: ");
1021         pos += scnprintf(buf + pos, bufsz - pos, "%s\n",
1022                 (pwrsave_status == CSR_GP_REG_NO_POWER_SAVE) ? "none" :
1023                 (pwrsave_status == CSR_GP_REG_MAC_POWER_SAVE) ? "MAC" :
1024                 (pwrsave_status == CSR_GP_REG_PHY_POWER_SAVE) ? "PHY" :
1025                 "error");
1026
1027         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
1028 }
1029
1030 static ssize_t il_dbgfs_clear_ucode_stats_write(struct file *file,
1031                                          const char __user *user_buf,
1032                                          size_t count, loff_t *ppos)
1033 {
1034         struct il_priv *il = file->private_data;
1035         char buf[8];
1036         int buf_size;
1037         int clear;
1038
1039         memset(buf, 0, sizeof(buf));
1040         buf_size = min(count, sizeof(buf) -  1);
1041         if (copy_from_user(buf, user_buf, buf_size))
1042                 return -EFAULT;
1043         if (sscanf(buf, "%d", &clear) != 1)
1044                 return -EFAULT;
1045
1046         /* make request to uCode to retrieve stats information */
1047         mutex_lock(&il->mutex);
1048         il_send_stats_request(il, CMD_SYNC, true);
1049         mutex_unlock(&il->mutex);
1050
1051         return count;
1052 }
1053
1054 static ssize_t il_dbgfs_rxon_flags_read(struct file *file,
1055                                          char __user *user_buf,
1056                                          size_t count, loff_t *ppos) {
1057
1058         struct il_priv *il = file->private_data;
1059         int len = 0;
1060         char buf[20];
1061
1062         len = sprintf(buf, "0x%04X\n",
1063                 le32_to_cpu(il->ctx.active.flags));
1064         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
1065 }
1066
1067 static ssize_t il_dbgfs_rxon_filter_flags_read(struct file *file,
1068                                                 char __user *user_buf,
1069                                                 size_t count, loff_t *ppos) {
1070
1071         struct il_priv *il = file->private_data;
1072         int len = 0;
1073         char buf[20];
1074
1075         len = sprintf(buf, "0x%04X\n",
1076         le32_to_cpu(il->ctx.active.filter_flags));
1077         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
1078 }
1079
1080 static ssize_t il_dbgfs_fh_reg_read(struct file *file,
1081                                          char __user *user_buf,
1082                                          size_t count, loff_t *ppos)
1083 {
1084         struct il_priv *il = file->private_data;
1085         char *buf;
1086         int pos = 0;
1087         ssize_t ret = -EFAULT;
1088
1089         if (il->cfg->ops->lib->dump_fh) {
1090                 ret = pos = il->cfg->ops->lib->dump_fh(il, &buf, true);
1091                 if (buf) {
1092                         ret = simple_read_from_buffer(user_buf,
1093                                                       count, ppos, buf, pos);
1094                         kfree(buf);
1095                 }
1096         }
1097
1098         return ret;
1099 }
1100
1101 static ssize_t il_dbgfs_missed_beacon_read(struct file *file,
1102                                         char __user *user_buf,
1103                                         size_t count, loff_t *ppos) {
1104
1105         struct il_priv *il = file->private_data;
1106         int pos = 0;
1107         char buf[12];
1108         const size_t bufsz = sizeof(buf);
1109
1110         pos += scnprintf(buf + pos, bufsz - pos, "%d\n",
1111                         il->missed_beacon_threshold);
1112
1113         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
1114 }
1115
1116 static ssize_t il_dbgfs_missed_beacon_write(struct file *file,
1117                                          const char __user *user_buf,
1118                                          size_t count, loff_t *ppos)
1119 {
1120         struct il_priv *il = file->private_data;
1121         char buf[8];
1122         int buf_size;
1123         int missed;
1124
1125         memset(buf, 0, sizeof(buf));
1126         buf_size = min(count, sizeof(buf) -  1);
1127         if (copy_from_user(buf, user_buf, buf_size))
1128                 return -EFAULT;
1129         if (sscanf(buf, "%d", &missed) != 1)
1130                 return -EINVAL;
1131
1132         if (missed < IL_MISSED_BEACON_THRESHOLD_MIN ||
1133             missed > IL_MISSED_BEACON_THRESHOLD_MAX)
1134                 il->missed_beacon_threshold =
1135                         IL_MISSED_BEACON_THRESHOLD_DEF;
1136         else
1137                 il->missed_beacon_threshold = missed;
1138
1139         return count;
1140 }
1141
1142 static ssize_t il_dbgfs_force_reset_read(struct file *file,
1143                                         char __user *user_buf,
1144                                         size_t count, loff_t *ppos) {
1145
1146         struct il_priv *il = file->private_data;
1147         int pos = 0;
1148         char buf[300];
1149         const size_t bufsz = sizeof(buf);
1150         struct il_force_reset *force_reset;
1151
1152         force_reset = &il->force_reset;
1153
1154         pos += scnprintf(buf + pos, bufsz - pos,
1155                         "\tnumber of reset request: %d\n",
1156                         force_reset->reset_request_count);
1157         pos += scnprintf(buf + pos, bufsz - pos,
1158                         "\tnumber of reset request success: %d\n",
1159                         force_reset->reset_success_count);
1160         pos += scnprintf(buf + pos, bufsz - pos,
1161                         "\tnumber of reset request reject: %d\n",
1162                         force_reset->reset_reject_count);
1163         pos += scnprintf(buf + pos, bufsz - pos,
1164                         "\treset duration: %lu\n",
1165                         force_reset->reset_duration);
1166
1167         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
1168 }
1169
1170 static ssize_t il_dbgfs_force_reset_write(struct file *file,
1171                                         const char __user *user_buf,
1172                                         size_t count, loff_t *ppos) {
1173
1174         int ret;
1175         struct il_priv *il = file->private_data;
1176
1177         ret = il_force_reset(il, true);
1178
1179         return ret ? ret : count;
1180 }
1181
1182 static ssize_t il_dbgfs_wd_timeout_write(struct file *file,
1183                                         const char __user *user_buf,
1184                                         size_t count, loff_t *ppos) {
1185
1186         struct il_priv *il = file->private_data;
1187         char buf[8];
1188         int buf_size;
1189         int timeout;
1190
1191         memset(buf, 0, sizeof(buf));
1192         buf_size = min(count, sizeof(buf) -  1);
1193         if (copy_from_user(buf, user_buf, buf_size))
1194                 return -EFAULT;
1195         if (sscanf(buf, "%d", &timeout) != 1)
1196                 return -EINVAL;
1197         if (timeout < 0 || timeout > IL_MAX_WD_TIMEOUT)
1198                 timeout = IL_DEF_WD_TIMEOUT;
1199
1200         il->cfg->base_params->wd_timeout = timeout;
1201         il_setup_watchdog(il);
1202         return count;
1203 }
1204
1205 DEBUGFS_READ_FILE_OPS(rx_stats);
1206 DEBUGFS_READ_FILE_OPS(tx_stats);
1207 DEBUGFS_READ_WRITE_FILE_OPS(traffic_log);
1208 DEBUGFS_READ_FILE_OPS(rx_queue);
1209 DEBUGFS_READ_FILE_OPS(tx_queue);
1210 DEBUGFS_READ_FILE_OPS(ucode_rx_stats);
1211 DEBUGFS_READ_FILE_OPS(ucode_tx_stats);
1212 DEBUGFS_READ_FILE_OPS(ucode_general_stats);
1213 DEBUGFS_READ_FILE_OPS(sensitivity);
1214 DEBUGFS_READ_FILE_OPS(chain_noise);
1215 DEBUGFS_READ_FILE_OPS(power_save_status);
1216 DEBUGFS_WRITE_FILE_OPS(clear_ucode_stats);
1217 DEBUGFS_WRITE_FILE_OPS(clear_traffic_stats);
1218 DEBUGFS_READ_FILE_OPS(fh_reg);
1219 DEBUGFS_READ_WRITE_FILE_OPS(missed_beacon);
1220 DEBUGFS_READ_WRITE_FILE_OPS(force_reset);
1221 DEBUGFS_READ_FILE_OPS(rxon_flags);
1222 DEBUGFS_READ_FILE_OPS(rxon_filter_flags);
1223 DEBUGFS_WRITE_FILE_OPS(wd_timeout);
1224
1225 /*
1226  * Create the debugfs files and directories
1227  *
1228  */
1229 int il_dbgfs_register(struct il_priv *il, const char *name)
1230 {
1231         struct dentry *phyd = il->hw->wiphy->debugfsdir;
1232         struct dentry *dir_drv, *dir_data, *dir_rf, *dir_debug;
1233
1234         dir_drv = debugfs_create_dir(name, phyd);
1235         if (!dir_drv)
1236                 return -ENOMEM;
1237
1238         il->debugfs_dir = dir_drv;
1239
1240         dir_data = debugfs_create_dir("data", dir_drv);
1241         if (!dir_data)
1242                 goto err;
1243         dir_rf = debugfs_create_dir("rf", dir_drv);
1244         if (!dir_rf)
1245                 goto err;
1246         dir_debug = debugfs_create_dir("debug", dir_drv);
1247         if (!dir_debug)
1248                 goto err;
1249
1250         DEBUGFS_ADD_FILE(nvm, dir_data, S_IRUSR);
1251         DEBUGFS_ADD_FILE(sram, dir_data, S_IWUSR | S_IRUSR);
1252         DEBUGFS_ADD_FILE(stations, dir_data, S_IRUSR);
1253         DEBUGFS_ADD_FILE(channels, dir_data, S_IRUSR);
1254         DEBUGFS_ADD_FILE(status, dir_data, S_IRUSR);
1255         DEBUGFS_ADD_FILE(interrupt, dir_data, S_IWUSR | S_IRUSR);
1256         DEBUGFS_ADD_FILE(qos, dir_data, S_IRUSR);
1257         DEBUGFS_ADD_FILE(disable_ht40, dir_data, S_IWUSR | S_IRUSR);
1258         DEBUGFS_ADD_FILE(rx_stats, dir_debug, S_IRUSR);
1259         DEBUGFS_ADD_FILE(tx_stats, dir_debug, S_IRUSR);
1260         DEBUGFS_ADD_FILE(traffic_log, dir_debug, S_IWUSR | S_IRUSR);
1261         DEBUGFS_ADD_FILE(rx_queue, dir_debug, S_IRUSR);
1262         DEBUGFS_ADD_FILE(tx_queue, dir_debug, S_IRUSR);
1263         DEBUGFS_ADD_FILE(power_save_status, dir_debug, S_IRUSR);
1264         DEBUGFS_ADD_FILE(clear_ucode_stats, dir_debug, S_IWUSR);
1265         DEBUGFS_ADD_FILE(clear_traffic_stats, dir_debug, S_IWUSR);
1266         DEBUGFS_ADD_FILE(fh_reg, dir_debug, S_IRUSR);
1267         DEBUGFS_ADD_FILE(missed_beacon, dir_debug, S_IWUSR);
1268         DEBUGFS_ADD_FILE(force_reset, dir_debug, S_IWUSR | S_IRUSR);
1269         DEBUGFS_ADD_FILE(ucode_rx_stats, dir_debug, S_IRUSR);
1270         DEBUGFS_ADD_FILE(ucode_tx_stats, dir_debug, S_IRUSR);
1271         DEBUGFS_ADD_FILE(ucode_general_stats, dir_debug, S_IRUSR);
1272
1273         if (il->cfg->base_params->sensitivity_calib_by_driver)
1274                 DEBUGFS_ADD_FILE(sensitivity, dir_debug, S_IRUSR);
1275         if (il->cfg->base_params->chain_noise_calib_by_driver)
1276                 DEBUGFS_ADD_FILE(chain_noise, dir_debug, S_IRUSR);
1277         DEBUGFS_ADD_FILE(rxon_flags, dir_debug, S_IWUSR);
1278         DEBUGFS_ADD_FILE(rxon_filter_flags, dir_debug, S_IWUSR);
1279         DEBUGFS_ADD_FILE(wd_timeout, dir_debug, S_IWUSR);
1280         if (il->cfg->base_params->sensitivity_calib_by_driver)
1281                 DEBUGFS_ADD_BOOL(disable_sensitivity, dir_rf,
1282                                  &il->disable_sens_cal);
1283         if (il->cfg->base_params->chain_noise_calib_by_driver)
1284                 DEBUGFS_ADD_BOOL(disable_chain_noise, dir_rf,
1285                                  &il->disable_chain_noise_cal);
1286         DEBUGFS_ADD_BOOL(disable_tx_power, dir_rf,
1287                                 &il->disable_tx_power_cal);
1288         return 0;
1289
1290 err:
1291         IL_ERR("Can't create the debugfs directory\n");
1292         il_dbgfs_unregister(il);
1293         return -ENOMEM;
1294 }
1295 EXPORT_SYMBOL(il_dbgfs_register);
1296
1297 /**
1298  * Remove the debugfs files and directories
1299  *
1300  */
1301 void il_dbgfs_unregister(struct il_priv *il)
1302 {
1303         if (!il->debugfs_dir)
1304                 return;
1305
1306         debugfs_remove_recursive(il->debugfs_dir);
1307         il->debugfs_dir = NULL;
1308 }
1309 EXPORT_SYMBOL(il_dbgfs_unregister);