drivers/net/wireless/iwlwifi/mvm/debugfs.c

   1 /******************************************************************************
   2  *
   3  * This file is provided under a dual BSD/GPLv2 license.  When using or
   4  * redistributing this file, you may do so under either license.
   5  *
   6  * GPL LICENSE SUMMARY
   7  *
   8  * Copyright(c) 2012 - 2013 Intel Corporation. All rights reserved.
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of version 2 of the GNU General Public License as
  12  * published by the Free Software Foundation.
  13  *
  14  * This program is distributed in the hope that it will be useful, but
  15  * WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
  22  * USA
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  25  * in the file called COPYING.
  26  *
  27  * Contact Information:
  28  *  Intel Linux Wireless <ilw@linux.intel.com>
  29  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  30  *
  31  * BSD LICENSE
  32  *
  33  * Copyright(c) 2012 - 2013 Intel Corporation. All rights reserved.
  34  * All rights reserved.
  35  *
  36  * Redistribution and use in source and binary forms, with or without
  37  * modification, are permitted provided that the following conditions
  38  * are met:
  39  *
  40  *  * Redistributions of source code must retain the above copyright
  41  *    notice, this list of conditions and the following disclaimer.
  42  *  * Redistributions in binary form must reproduce the above copyright
  43  *    notice, this list of conditions and the following disclaimer in
  44  *    the documentation and/or other materials provided with the
  45  *    distribution.
  46  *  * Neither the name Intel Corporation nor the names of its
  47  *    contributors may be used to endorse or promote products derived
  48  *    from this software without specific prior written permission.
  49  *
  50  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  51  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  52  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  53  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  54  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  55  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  56  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  57  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  58  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  59  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  60  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  61  *
  62  *****************************************************************************/
  63 #include "mvm.h"
  64 #include "sta.h"
  65 #include "iwl-io.h"
  66 #include "iwl-prph.h"
  67
  68 static ssize_t iwl_dbgfs_tx_flush_write(struct file *file,
  69                                         const char __user *user_buf,
  70                                         size_t count, loff_t *ppos)
  71 {
  72         struct iwl_mvm *mvm = file->private_data;
  73         char buf[16] = {};
  74         size_t buf_size = min(count, sizeof(buf) - 1);
  75         int ret;
  76         u32 scd_q_msk;
  77
  78         if (!mvm->ucode_loaded || mvm->cur_ucode != IWL_UCODE_REGULAR)
  79                 return -EIO;
  80
  81         if (copy_from_user(buf, user_buf, buf_size))
  82                 return -EFAULT;
  83
  84         if (sscanf(buf, "%x", &scd_q_msk) != 1)
  85                 return -EINVAL;
  86
  87         IWL_ERR(mvm, "FLUSHING queues: scd_q_msk = 0x%x\n", scd_q_msk);
  88
  89         mutex_lock(&mvm->mutex);
  90         ret =  iwl_mvm_flush_tx_path(mvm, scd_q_msk, true) ? : count;
  91         mutex_unlock(&mvm->mutex);
  92
  93         return ret;
  94 }
  95
  96 static ssize_t iwl_dbgfs_sta_drain_write(struct file *file,
  97                                          const char __user *user_buf,
  98                                          size_t count, loff_t *ppos)
  99 {
 100         struct iwl_mvm *mvm = file->private_data;
 101         struct ieee80211_sta *sta;
 102         char buf[8] = {};
 103         size_t buf_size = min(count, sizeof(buf) - 1);
 104         int sta_id, drain, ret;
 105
 106         if (!mvm->ucode_loaded || mvm->cur_ucode != IWL_UCODE_REGULAR)
 107                 return -EIO;
 108
 109         if (copy_from_user(buf, user_buf, buf_size))
 110                 return -EFAULT;
 111
 112         if (sscanf(buf, "%d %d", &sta_id, &drain) != 2)
 113                 return -EINVAL;
 114         if (sta_id < 0 || sta_id >= IWL_MVM_STATION_COUNT)
 115                 return -EINVAL;
 116         if (drain < 0 || drain > 1)
 117                 return -EINVAL;
 118
 119         mutex_lock(&mvm->mutex);
 120
 121         sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
 122                                         lockdep_is_held(&mvm->mutex));
 123         if (IS_ERR_OR_NULL(sta))
 124                 ret = -ENOENT;
 125         else
 126                 ret = iwl_mvm_drain_sta(mvm, (void *)sta->drv_priv, drain) ? :
 127                         count;
 128
 129         mutex_unlock(&mvm->mutex);
 130
 131         return ret;
 132 }
 133
 134 static ssize_t iwl_dbgfs_sram_read(struct file *file, char __user *user_buf,
 135                                    size_t count, loff_t *ppos)
 136 {
 137         struct iwl_mvm *mvm = file->private_data;
 138         const struct fw_img *img;
 139         int ofs, len, pos = 0;
 140         size_t bufsz, ret;
 141         char *buf;
 142         u8 *ptr;
 143
 144         if (!mvm->ucode_loaded)
 145                 return -EINVAL;
 146
 147         /* default is to dump the entire data segment */
 148         if (!mvm->dbgfs_sram_offset && !mvm->dbgfs_sram_len) {
 149                 img = &mvm->fw->img[mvm->cur_ucode];
 150                 ofs = img->sec[IWL_UCODE_SECTION_DATA].offset;
 151                 len = img->sec[IWL_UCODE_SECTION_DATA].len;
 152         } else {
 153                 ofs = mvm->dbgfs_sram_offset;
 154                 len = mvm->dbgfs_sram_len;
 155         }
 156
 157         bufsz = len * 4 + 256;
 158         buf = kzalloc(bufsz, GFP_KERNEL);
 159         if (!buf)
 160                 return -ENOMEM;
 161
 162         ptr = kzalloc(len, GFP_KERNEL);
 163         if (!ptr) {
 164                 kfree(buf);
 165                 return -ENOMEM;
 166         }
 167
 168         pos += scnprintf(buf + pos, bufsz - pos, "sram_len: 0x%x\n", len);
 169         pos += scnprintf(buf + pos, bufsz - pos, "sram_offset: 0x%x\n", ofs);
 170
 171         iwl_trans_read_mem_bytes(mvm->trans, ofs, ptr, len);
 172         for (ofs = 0; ofs < len; ofs += 16) {
 173                 pos += scnprintf(buf + pos, bufsz - pos, "0x%.4x ", ofs);
 174                 hex_dump_to_buffer(ptr + ofs, 16, 16, 1, buf + pos,
 175                                    bufsz - pos, false);
 176                 pos += strlen(buf + pos);
 177                 if (bufsz - pos > 0)
 178                         buf[pos++] = '\n';
 179         }
 180
 181         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 182
 183         kfree(buf);
 184         kfree(ptr);
 185
 186         return ret;
 187 }
 188
 189 static ssize_t iwl_dbgfs_sram_write(struct file *file,
 190                                     const char __user *user_buf, size_t count,
 191                                     loff_t *ppos)
 192 {
 193         struct iwl_mvm *mvm = file->private_data;
 194         char buf[64] = {};
 195         size_t buf_size = min(count, sizeof(buf) -  1);
 196         u32 offset, len;
 197
 198         if (copy_from_user(buf, user_buf, buf_size))
 199                 return -EFAULT;
 200
 201         if (sscanf(buf, "%x,%x", &offset, &len) == 2) {
 202                 if ((offset & 0x3) || (len & 0x3))
 203                         return -EINVAL;
 204                 mvm->dbgfs_sram_offset = offset;
 205                 mvm->dbgfs_sram_len = len;
 206         } else {
 207                 mvm->dbgfs_sram_offset = 0;
 208                 mvm->dbgfs_sram_len = 0;
 209         }
 210
 211         return count;
 212 }
 213
 214 static ssize_t iwl_dbgfs_stations_read(struct file *file, char __user *user_buf,
 215                                        size_t count, loff_t *ppos)
 216 {
 217         struct iwl_mvm *mvm = file->private_data;
 218         struct ieee80211_sta *sta;
 219         char buf[400];
 220         int i, pos = 0, bufsz = sizeof(buf);
 221
 222         mutex_lock(&mvm->mutex);
 223
 224         for (i = 0; i < IWL_MVM_STATION_COUNT; i++) {
 225                 pos += scnprintf(buf + pos, bufsz - pos, "%.2d: ", i);
 226                 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
 227                                                 lockdep_is_held(&mvm->mutex));
 228                 if (!sta)
 229                         pos += scnprintf(buf + pos, bufsz - pos, "N/A\n");
 230                 else if (IS_ERR(sta))
 231                         pos += scnprintf(buf + pos, bufsz - pos, "%ld\n",
 232                                          PTR_ERR(sta));
 233                 else
 234                         pos += scnprintf(buf + pos, bufsz - pos, "%pM\n",
 235                                          sta->addr);
 236         }
 237
 238         mutex_unlock(&mvm->mutex);
 239
 240         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 241 }
 242
 243 static ssize_t iwl_dbgfs_disable_power_off_read(struct file *file,
 244                                                 char __user *user_buf,
 245                                                 size_t count, loff_t *ppos)
 246 {
 247         struct iwl_mvm *mvm = file->private_data;
 248         char buf[64];
 249         int bufsz = sizeof(buf);
 250         int pos = 0;
 251
 252         pos += scnprintf(buf+pos, bufsz-pos, "disable_power_off_d0=%d\n",
 253                          mvm->disable_power_off);
 254         pos += scnprintf(buf+pos, bufsz-pos, "disable_power_off_d3=%d\n",
 255                          mvm->disable_power_off_d3);
 256
 257         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 258 }
 259
 260 static ssize_t iwl_dbgfs_disable_power_off_write(struct file *file,
 261                                                  const char __user *user_buf,
 262                                                  size_t count, loff_t *ppos)
 263 {
 264         struct iwl_mvm *mvm = file->private_data;
 265         char buf[64] = {};
 266         size_t buf_size = min(count, sizeof(buf) - 1);
 267         int ret;
 268         int val;
 269
 270         if (!mvm->ucode_loaded)
 271                 return -EIO;
 272
 273         if (copy_from_user(buf, user_buf, buf_size))
 274                 return -EFAULT;
 275
 276         if (!strncmp("disable_power_off_d0=", buf, 21)) {
 277                 if (sscanf(buf + 21, "%d", &val) != 1)
 278                         return -EINVAL;
 279                 mvm->disable_power_off = val;
 280         } else if (!strncmp("disable_power_off_d3=", buf, 21)) {
 281                 if (sscanf(buf + 21, "%d", &val) != 1)
 282                         return -EINVAL;
 283                 mvm->disable_power_off_d3 = val;
 284         } else {
 285                 return -EINVAL;
 286         }
 287
 288         mutex_lock(&mvm->mutex);
 289         ret = iwl_mvm_power_update_device_mode(mvm);
 290         mutex_unlock(&mvm->mutex);
 291
 292         return ret ?: count;
 293 }
 294
 295 static void iwl_dbgfs_update_pm(struct iwl_mvm *mvm,
 296                                  struct ieee80211_vif *vif,
 297                                  enum iwl_dbgfs_pm_mask param, int val)
 298 {
 299         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 300         struct iwl_dbgfs_pm *dbgfs_pm = &mvmvif->dbgfs_pm;
 301
 302         dbgfs_pm->mask |= param;
 303
 304         switch (param) {
 305         case MVM_DEBUGFS_PM_KEEP_ALIVE: {
 306                 struct ieee80211_hw *hw = mvm->hw;
 307                 int dtimper = hw->conf.ps_dtim_period ?: 1;
 308                 int dtimper_msec = dtimper * vif->bss_conf.beacon_int;
 309
 310                 IWL_DEBUG_POWER(mvm, "debugfs: set keep_alive= %d sec\n", val);
 311                 if (val * MSEC_PER_SEC < 3 * dtimper_msec)
 312                         IWL_WARN(mvm,
 313                                  "debugfs: keep alive period (%ld msec) is less than minimum required (%d msec)\n",
 314                                  val * MSEC_PER_SEC, 3 * dtimper_msec);
 315                 dbgfs_pm->keep_alive_seconds = val;
 316                 break;
 317         }
 318         case MVM_DEBUGFS_PM_SKIP_OVER_DTIM:
 319                 IWL_DEBUG_POWER(mvm, "skip_over_dtim %s\n",
 320                                 val ? "enabled" : "disabled");
 321                 dbgfs_pm->skip_over_dtim = val;
 322                 break;
 323         case MVM_DEBUGFS_PM_SKIP_DTIM_PERIODS:
 324                 IWL_DEBUG_POWER(mvm, "skip_dtim_periods=%d\n", val);
 325                 dbgfs_pm->skip_dtim_periods = val;
 326                 break;
 327         case MVM_DEBUGFS_PM_RX_DATA_TIMEOUT:
 328                 IWL_DEBUG_POWER(mvm, "rx_data_timeout=%d\n", val);
 329                 dbgfs_pm->rx_data_timeout = val;
 330                 break;
 331         case MVM_DEBUGFS_PM_TX_DATA_TIMEOUT:
 332                 IWL_DEBUG_POWER(mvm, "tx_data_timeout=%d\n", val);
 333                 dbgfs_pm->tx_data_timeout = val;
 334                 break;
 335         case MVM_DEBUGFS_PM_DISABLE_POWER_OFF:
 336                 IWL_DEBUG_POWER(mvm, "disable_power_off=%d\n", val);
 337                 dbgfs_pm->disable_power_off = val;
 338                 break;
 339         case MVM_DEBUGFS_PM_LPRX_ENA:
 340                 IWL_DEBUG_POWER(mvm, "lprx %s\n", val ? "enabled" : "disabled");
 341                 dbgfs_pm->lprx_ena = val;
 342                 break;
 343         case MVM_DEBUGFS_PM_LPRX_RSSI_THRESHOLD:
 344                 IWL_DEBUG_POWER(mvm, "lprx_rssi_threshold=%d\n", val);
 345                 dbgfs_pm->lprx_rssi_threshold = val;
 346                 break;
 347         case MVM_DEBUGFS_PM_SNOOZE_ENABLE:
 348                 IWL_DEBUG_POWER(mvm, "snooze_enable=%d\n", val);
 349                 dbgfs_pm->snooze_ena = val;
 350                 break;
 351         }
 352 }
 353
 354 static ssize_t iwl_dbgfs_pm_params_write(struct file *file,
 355                                          const char __user *user_buf,
 356                                          size_t count, loff_t *ppos)
 357 {
 358         struct ieee80211_vif *vif = file->private_data;
 359         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 360         struct iwl_mvm *mvm = mvmvif->dbgfs_data;
 361         enum iwl_dbgfs_pm_mask param;
 362         char buf[32] = {};
 363         size_t buf_size = min(count, sizeof(buf) - 1);
 364         int val;
 365         int ret;
 366
 367         if (copy_from_user(buf, user_buf, buf_size))
 368                 return -EFAULT;
 369
 370         if (!strncmp("keep_alive=", buf, 11)) {
 371                 if (sscanf(buf + 11, "%d", &val) != 1)
 372                         return -EINVAL;
 373                 param = MVM_DEBUGFS_PM_KEEP_ALIVE;
 374         } else if (!strncmp("skip_over_dtim=", buf, 15)) {
 375                 if (sscanf(buf + 15, "%d", &val) != 1)
 376                         return -EINVAL;
 377                 param = MVM_DEBUGFS_PM_SKIP_OVER_DTIM;
 378         } else if (!strncmp("skip_dtim_periods=", buf, 18)) {
 379                 if (sscanf(buf + 18, "%d", &val) != 1)
 380                         return -EINVAL;
 381                 param = MVM_DEBUGFS_PM_SKIP_DTIM_PERIODS;
 382         } else if (!strncmp("rx_data_timeout=", buf, 16)) {
 383                 if (sscanf(buf + 16, "%d", &val) != 1)
 384                         return -EINVAL;
 385                 param = MVM_DEBUGFS_PM_RX_DATA_TIMEOUT;
 386         } else if (!strncmp("tx_data_timeout=", buf, 16)) {
 387                 if (sscanf(buf + 16, "%d", &val) != 1)
 388                         return -EINVAL;
 389                 param = MVM_DEBUGFS_PM_TX_DATA_TIMEOUT;
 390         } else if (!strncmp("disable_power_off=", buf, 18) &&
 391                    !(mvm->fw->ucode_capa.flags &
 392                      IWL_UCODE_TLV_FLAGS_DEVICE_PS_CMD)) {
 393                 if (sscanf(buf + 18, "%d", &val) != 1)
 394                         return -EINVAL;
 395                 param = MVM_DEBUGFS_PM_DISABLE_POWER_OFF;
 396         } else if (!strncmp("lprx=", buf, 5)) {
 397                 if (sscanf(buf + 5, "%d", &val) != 1)
 398                         return -EINVAL;
 399                 param = MVM_DEBUGFS_PM_LPRX_ENA;
 400         } else if (!strncmp("lprx_rssi_threshold=", buf, 20)) {
 401                 if (sscanf(buf + 20, "%d", &val) != 1)
 402                         return -EINVAL;
 403                 if (val > POWER_LPRX_RSSI_THRESHOLD_MAX || val <
 404                     POWER_LPRX_RSSI_THRESHOLD_MIN)
 405                         return -EINVAL;
 406                 param = MVM_DEBUGFS_PM_LPRX_RSSI_THRESHOLD;
 407         } else if (!strncmp("snooze_enable=", buf, 14)) {
 408                 if (sscanf(buf + 14, "%d", &val) != 1)
 409                         return -EINVAL;
 410                 param = MVM_DEBUGFS_PM_SNOOZE_ENABLE;
 411         } else {
 412                 return -EINVAL;
 413         }
 414
 415         mutex_lock(&mvm->mutex);
 416         iwl_dbgfs_update_pm(mvm, vif, param, val);
 417         ret = iwl_mvm_power_update_mode(mvm, vif);
 418         mutex_unlock(&mvm->mutex);
 419
 420         return ret ?: count;
 421 }
 422
 423 static ssize_t iwl_dbgfs_pm_params_read(struct file *file,
 424                                         char __user *user_buf,
 425                                         size_t count, loff_t *ppos)
 426 {
 427         struct ieee80211_vif *vif = file->private_data;
 428         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 429         struct iwl_mvm *mvm = mvmvif->dbgfs_data;
 430         char buf[512];
 431         int bufsz = sizeof(buf);
 432         int pos;
 433
 434         pos = iwl_mvm_power_dbgfs_read(mvm, vif, buf, bufsz);
 435
 436         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 437 }
 438
 439 static ssize_t iwl_dbgfs_mac_params_read(struct file *file,
 440                                          char __user *user_buf,
 441                                          size_t count, loff_t *ppos)
 442 {
 443         struct ieee80211_vif *vif = file->private_data;
 444         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 445         struct iwl_mvm *mvm = mvmvif->dbgfs_data;
 446         u8 ap_sta_id;
 447         struct ieee80211_chanctx_conf *chanctx_conf;
 448         char buf[512];
 449         int bufsz = sizeof(buf);
 450         int pos = 0;
 451         int i;
 452
 453         mutex_lock(&mvm->mutex);
 454
 455         ap_sta_id = mvmvif->ap_sta_id;
 456
 457         pos += scnprintf(buf+pos, bufsz-pos, "mac id/color: %d / %d\n",
 458                          mvmvif->id, mvmvif->color);
 459         pos += scnprintf(buf+pos, bufsz-pos, "bssid: %pM\n",
 460                          vif->bss_conf.bssid);
 461         pos += scnprintf(buf+pos, bufsz-pos, "QoS:\n");
 462         for (i = 0; i < ARRAY_SIZE(mvmvif->queue_params); i++)
 463                 pos += scnprintf(buf+pos, bufsz-pos,
 464                                  "\t%d: txop:%d - cw_min:%d - cw_max = %d - aifs = %d upasd = %d\n",
 465                                  i, mvmvif->queue_params[i].txop,
 466                                  mvmvif->queue_params[i].cw_min,
 467                                  mvmvif->queue_params[i].cw_max,
 468                                  mvmvif->queue_params[i].aifs,
 469                                  mvmvif->queue_params[i].uapsd);
 470
 471         if (vif->type == NL80211_IFTYPE_STATION &&
 472             ap_sta_id != IWL_MVM_STATION_COUNT) {
 473                 struct ieee80211_sta *sta;
 474                 struct iwl_mvm_sta *mvm_sta;
 475
 476                 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[ap_sta_id],
 477                                                 lockdep_is_held(&mvm->mutex));
 478                 mvm_sta = (void *)sta->drv_priv;
 479                 pos += scnprintf(buf+pos, bufsz-pos,
 480                                  "ap_sta_id %d - reduced Tx power %d\n",
 481                                  ap_sta_id, mvm_sta->bt_reduced_txpower);
 482         }
 483
 484         rcu_read_lock();
 485         chanctx_conf = rcu_dereference(vif->chanctx_conf);
 486         if (chanctx_conf)
 487                 pos += scnprintf(buf+pos, bufsz-pos,
 488                                  "idle rx chains %d, active rx chains: %d\n",
 489                                  chanctx_conf->rx_chains_static,
 490                                  chanctx_conf->rx_chains_dynamic);
 491         rcu_read_unlock();
 492
 493         mutex_unlock(&mvm->mutex);
 494
 495         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 496 }
 497
 498 #define BT_MBOX_MSG(_notif, _num, _field)                                    \
 499         ((le32_to_cpu((_notif)->mbox_msg[(_num)]) & BT_MBOX##_num##_##_field)\
 500         >> BT_MBOX##_num##_##_field##_POS)
 501
 502
 503 #define BT_MBOX_PRINT(_num, _field, _end)                                   \
 504                         pos += scnprintf(buf + pos, bufsz - pos,            \
 505                                          "\t%s: %d%s",                      \
 506                                          #_field,                           \
 507                                          BT_MBOX_MSG(notif, _num, _field),  \
 508                                          true ? "\n" : ", ");
 509
 510 static ssize_t iwl_dbgfs_bt_notif_read(struct file *file, char __user *user_buf,
 511                                        size_t count, loff_t *ppos)
 512 {
 513         struct iwl_mvm *mvm = file->private_data;
 514         struct iwl_bt_coex_profile_notif *notif = &mvm->last_bt_notif;
 515         char *buf;
 516         int ret, pos = 0, bufsz = sizeof(char) * 1024;
 517
 518         buf = kmalloc(bufsz, GFP_KERNEL);
 519         if (!buf)
 520                 return -ENOMEM;
 521
 522         mutex_lock(&mvm->mutex);
 523
 524         pos += scnprintf(buf+pos, bufsz-pos, "MBOX dw0:\n");
 525
 526         BT_MBOX_PRINT(0, LE_SLAVE_LAT, false);
 527         BT_MBOX_PRINT(0, LE_PROF1, false);
 528         BT_MBOX_PRINT(0, LE_PROF2, false);
 529         BT_MBOX_PRINT(0, LE_PROF_OTHER, false);
 530         BT_MBOX_PRINT(0, CHL_SEQ_N, false);
 531         BT_MBOX_PRINT(0, INBAND_S, false);
 532         BT_MBOX_PRINT(0, LE_MIN_RSSI, false);
 533         BT_MBOX_PRINT(0, LE_SCAN, false);
 534         BT_MBOX_PRINT(0, LE_ADV, false);
 535         BT_MBOX_PRINT(0, LE_MAX_TX_POWER, false);
 536         BT_MBOX_PRINT(0, OPEN_CON_1, true);
 537
 538         pos += scnprintf(buf+pos, bufsz-pos, "MBOX dw1:\n");
 539
 540         BT_MBOX_PRINT(1, BR_MAX_TX_POWER, false);
 541         BT_MBOX_PRINT(1, IP_SR, false);
 542         BT_MBOX_PRINT(1, LE_MSTR, false);
 543         BT_MBOX_PRINT(1, AGGR_TRFC_LD, false);
 544         BT_MBOX_PRINT(1, MSG_TYPE, false);
 545         BT_MBOX_PRINT(1, SSN, true);
 546
 547         pos += scnprintf(buf+pos, bufsz-pos, "MBOX dw2:\n");
 548
 549         BT_MBOX_PRINT(2, SNIFF_ACT, false);
 550         BT_MBOX_PRINT(2, PAG, false);
 551         BT_MBOX_PRINT(2, INQUIRY, false);
 552         BT_MBOX_PRINT(2, CONN, false);
 553         BT_MBOX_PRINT(2, SNIFF_INTERVAL, false);
 554         BT_MBOX_PRINT(2, DISC, false);
 555         BT_MBOX_PRINT(2, SCO_TX_ACT, false);
 556         BT_MBOX_PRINT(2, SCO_RX_ACT, false);
 557         BT_MBOX_PRINT(2, ESCO_RE_TX, false);
 558         BT_MBOX_PRINT(2, SCO_DURATION, true);
 559
 560         pos += scnprintf(buf+pos, bufsz-pos, "MBOX dw3:\n");
 561
 562         BT_MBOX_PRINT(3, SCO_STATE, false);
 563         BT_MBOX_PRINT(3, SNIFF_STATE, false);
 564         BT_MBOX_PRINT(3, A2DP_STATE, false);
 565         BT_MBOX_PRINT(3, ACL_STATE, false);
 566         BT_MBOX_PRINT(3, MSTR_STATE, false);
 567         BT_MBOX_PRINT(3, OBX_STATE, false);
 568         BT_MBOX_PRINT(3, OPEN_CON_2, false);
 569         BT_MBOX_PRINT(3, TRAFFIC_LOAD, false);
 570         BT_MBOX_PRINT(3, CHL_SEQN_LSB, false);
 571         BT_MBOX_PRINT(3, INBAND_P, false);
 572         BT_MBOX_PRINT(3, MSG_TYPE_2, false);
 573         BT_MBOX_PRINT(3, SSN_2, false);
 574         BT_MBOX_PRINT(3, UPDATE_REQUEST, true);
 575
 576         pos += scnprintf(buf+pos, bufsz-pos, "bt_status = %d\n",
 577                          notif->bt_status);
 578         pos += scnprintf(buf+pos, bufsz-pos, "bt_open_conn = %d\n",
 579                          notif->bt_open_conn);
 580         pos += scnprintf(buf+pos, bufsz-pos, "bt_traffic_load = %d\n",
 581                          notif->bt_traffic_load);
 582         pos += scnprintf(buf+pos, bufsz-pos, "bt_agg_traffic_load = %d\n",
 583                          notif->bt_agg_traffic_load);
 584         pos += scnprintf(buf+pos, bufsz-pos, "bt_ci_compliance = %d\n",
 585                          notif->bt_ci_compliance);
 586         pos += scnprintf(buf+pos, bufsz-pos, "primary_ch_lut = %d\n",
 587                          le32_to_cpu(notif->primary_ch_lut));
 588         pos += scnprintf(buf+pos, bufsz-pos, "secondary_ch_lut = %d\n",
 589                          le32_to_cpu(notif->secondary_ch_lut));
 590         pos += scnprintf(buf+pos, bufsz-pos, "bt_activity_grading = %d\n",
 591                          le32_to_cpu(notif->bt_activity_grading));
 592
 593         mutex_unlock(&mvm->mutex);
 594
 595         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 596         kfree(buf);
 597
 598         return ret;
 599 }
 600 #undef BT_MBOX_PRINT
 601
 602 static ssize_t iwl_dbgfs_bt_cmd_read(struct file *file, char __user *user_buf,
 603                                      size_t count, loff_t *ppos)
 604 {
 605         struct iwl_mvm *mvm = file->private_data;
 606         struct iwl_bt_coex_ci_cmd *cmd = &mvm->last_bt_ci_cmd;
 607         char buf[256];
 608         int bufsz = sizeof(buf);
 609         int pos = 0;
 610
 611         mutex_lock(&mvm->mutex);
 612
 613         pos += scnprintf(buf+pos, bufsz-pos, "Channel inhibition CMD\n");
 614         pos += scnprintf(buf+pos, bufsz-pos,
 615                        "\tPrimary Channel Bitmap 0x%016llx Fat: %d\n",
 616                        le64_to_cpu(cmd->bt_primary_ci),
 617                        !!cmd->co_run_bw_primary);
 618         pos += scnprintf(buf+pos, bufsz-pos,
 619                        "\tSecondary Channel Bitmap 0x%016llx Fat: %d\n",
 620                        le64_to_cpu(cmd->bt_secondary_ci),
 621                        !!cmd->co_run_bw_secondary);
 622
 623         pos += scnprintf(buf+pos, bufsz-pos, "BT Configuration CMD\n");
 624         pos += scnprintf(buf+pos, bufsz-pos, "\tACK Kill Mask 0x%08x\n",
 625                          iwl_bt_ack_kill_msk[mvm->bt_kill_msk]);
 626         pos += scnprintf(buf+pos, bufsz-pos, "\tCTS Kill Mask 0x%08x\n",
 627                          iwl_bt_cts_kill_msk[mvm->bt_kill_msk]);
 628
 629         mutex_unlock(&mvm->mutex);
 630
 631         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 632 }
 633
 634 #define PRINT_STATS_LE32(_str, _val)                                    \
 635                          pos += scnprintf(buf + pos, bufsz - pos,       \
 636                                           fmt_table, _str,              \
 637                                           le32_to_cpu(_val))
 638
 639 static ssize_t iwl_dbgfs_fw_rx_stats_read(struct file *file,
 640                                           char __user *user_buf, size_t count,
 641                                           loff_t *ppos)
 642 {
 643         struct iwl_mvm *mvm = file->private_data;
 644         static const char *fmt_table = "\t%-30s %10u\n";
 645         static const char *fmt_header = "%-32s\n";
 646         int pos = 0;
 647         char *buf;
 648         int ret;
 649         /* 43 is the size of each data line, 33 is the size of each header */
 650         size_t bufsz =
 651                 ((sizeof(struct mvm_statistics_rx) / sizeof(__le32)) * 43) +
 652                 (4 * 33) + 1;
 653
 654         struct mvm_statistics_rx_phy *ofdm;
 655         struct mvm_statistics_rx_phy *cck;
 656         struct mvm_statistics_rx_non_phy *general;
 657         struct mvm_statistics_rx_ht_phy *ht;
 658
 659         buf = kzalloc(bufsz, GFP_KERNEL);
 660         if (!buf)
 661                 return -ENOMEM;
 662
 663         mutex_lock(&mvm->mutex);
 664
 665         ofdm = &mvm->rx_stats.ofdm;
 666         cck = &mvm->rx_stats.cck;
 667         general = &mvm->rx_stats.general;
 668         ht = &mvm->rx_stats.ofdm_ht;
 669
 670         pos += scnprintf(buf + pos, bufsz - pos, fmt_header,
 671                          "Statistics_Rx - OFDM");
 672         PRINT_STATS_LE32("ina_cnt", ofdm->ina_cnt);
 673         PRINT_STATS_LE32("fina_cnt", ofdm->fina_cnt);
 674         PRINT_STATS_LE32("plcp_err", ofdm->plcp_err);
 675         PRINT_STATS_LE32("crc32_err", ofdm->crc32_err);
 676         PRINT_STATS_LE32("overrun_err", ofdm->overrun_err);
 677         PRINT_STATS_LE32("early_overrun_err", ofdm->early_overrun_err);
 678         PRINT_STATS_LE32("crc32_good", ofdm->crc32_good);
 679         PRINT_STATS_LE32("false_alarm_cnt", ofdm->false_alarm_cnt);
 680         PRINT_STATS_LE32("fina_sync_err_cnt", ofdm->fina_sync_err_cnt);
 681         PRINT_STATS_LE32("sfd_timeout", ofdm->sfd_timeout);
 682         PRINT_STATS_LE32("fina_timeout", ofdm->fina_timeout);
 683         PRINT_STATS_LE32("unresponded_rts", ofdm->unresponded_rts);
 684         PRINT_STATS_LE32("rxe_frame_lmt_overrun",
 685                          ofdm->rxe_frame_limit_overrun);
 686         PRINT_STATS_LE32("sent_ack_cnt", ofdm->sent_ack_cnt);
 687         PRINT_STATS_LE32("sent_cts_cnt", ofdm->sent_cts_cnt);
 688         PRINT_STATS_LE32("sent_ba_rsp_cnt", ofdm->sent_ba_rsp_cnt);
 689         PRINT_STATS_LE32("dsp_self_kill", ofdm->dsp_self_kill);
 690         PRINT_STATS_LE32("mh_format_err", ofdm->mh_format_err);
 691         PRINT_STATS_LE32("re_acq_main_rssi_sum", ofdm->re_acq_main_rssi_sum);
 692         PRINT_STATS_LE32("reserved", ofdm->reserved);
 693
 694         pos += scnprintf(buf + pos, bufsz - pos, fmt_header,
 695                          "Statistics_Rx - CCK");
 696         PRINT_STATS_LE32("ina_cnt", cck->ina_cnt);
 697         PRINT_STATS_LE32("fina_cnt", cck->fina_cnt);
 698         PRINT_STATS_LE32("plcp_err", cck->plcp_err);
 699         PRINT_STATS_LE32("crc32_err", cck->crc32_err);
 700         PRINT_STATS_LE32("overrun_err", cck->overrun_err);
 701         PRINT_STATS_LE32("early_overrun_err", cck->early_overrun_err);
 702         PRINT_STATS_LE32("crc32_good", cck->crc32_good);
 703         PRINT_STATS_LE32("false_alarm_cnt", cck->false_alarm_cnt);
 704         PRINT_STATS_LE32("fina_sync_err_cnt", cck->fina_sync_err_cnt);
 705         PRINT_STATS_LE32("sfd_timeout", cck->sfd_timeout);
 706         PRINT_STATS_LE32("fina_timeout", cck->fina_timeout);
 707         PRINT_STATS_LE32("unresponded_rts", cck->unresponded_rts);
 708         PRINT_STATS_LE32("rxe_frame_lmt_overrun",
 709                          cck->rxe_frame_limit_overrun);
 710         PRINT_STATS_LE32("sent_ack_cnt", cck->sent_ack_cnt);
 711         PRINT_STATS_LE32("sent_cts_cnt", cck->sent_cts_cnt);
 712         PRINT_STATS_LE32("sent_ba_rsp_cnt", cck->sent_ba_rsp_cnt);
 713         PRINT_STATS_LE32("dsp_self_kill", cck->dsp_self_kill);
 714         PRINT_STATS_LE32("mh_format_err", cck->mh_format_err);
 715         PRINT_STATS_LE32("re_acq_main_rssi_sum", cck->re_acq_main_rssi_sum);
 716         PRINT_STATS_LE32("reserved", cck->reserved);
 717
 718         pos += scnprintf(buf + pos, bufsz - pos, fmt_header,
 719                          "Statistics_Rx - GENERAL");
 720         PRINT_STATS_LE32("bogus_cts", general->bogus_cts);
 721         PRINT_STATS_LE32("bogus_ack", general->bogus_ack);
 722         PRINT_STATS_LE32("non_bssid_frames", general->non_bssid_frames);
 723         PRINT_STATS_LE32("filtered_frames", general->filtered_frames);
 724         PRINT_STATS_LE32("non_channel_beacons", general->non_channel_beacons);
 725         PRINT_STATS_LE32("channel_beacons", general->channel_beacons);
 726         PRINT_STATS_LE32("num_missed_bcon", general->num_missed_bcon);
 727         PRINT_STATS_LE32("adc_rx_saturation_time",
 728                          general->adc_rx_saturation_time);
 729         PRINT_STATS_LE32("ina_detection_search_time",
 730                          general->ina_detection_search_time);
 731         PRINT_STATS_LE32("beacon_silence_rssi_a",
 732                          general->beacon_silence_rssi_a);
 733         PRINT_STATS_LE32("beacon_silence_rssi_b",
 734                          general->beacon_silence_rssi_b);
 735         PRINT_STATS_LE32("beacon_silence_rssi_c",
 736                          general->beacon_silence_rssi_c);
 737         PRINT_STATS_LE32("interference_data_flag",
 738                          general->interference_data_flag);
 739         PRINT_STATS_LE32("channel_load", general->channel_load);
 740         PRINT_STATS_LE32("dsp_false_alarms", general->dsp_false_alarms);
 741         PRINT_STATS_LE32("beacon_rssi_a", general->beacon_rssi_a);
 742         PRINT_STATS_LE32("beacon_rssi_b", general->beacon_rssi_b);
 743         PRINT_STATS_LE32("beacon_rssi_c", general->beacon_rssi_c);
 744         PRINT_STATS_LE32("beacon_energy_a", general->beacon_energy_a);
 745         PRINT_STATS_LE32("beacon_energy_b", general->beacon_energy_b);
 746         PRINT_STATS_LE32("beacon_energy_c", general->beacon_energy_c);
 747         PRINT_STATS_LE32("num_bt_kills", general->num_bt_kills);
 748         PRINT_STATS_LE32("mac_id", general->mac_id);
 749         PRINT_STATS_LE32("directed_data_mpdu", general->directed_data_mpdu);
 750
 751         pos += scnprintf(buf + pos, bufsz - pos, fmt_header,
 752                          "Statistics_Rx - HT");
 753         PRINT_STATS_LE32("plcp_err", ht->plcp_err);
 754         PRINT_STATS_LE32("overrun_err", ht->overrun_err);
 755         PRINT_STATS_LE32("early_overrun_err", ht->early_overrun_err);
 756         PRINT_STATS_LE32("crc32_good", ht->crc32_good);
 757         PRINT_STATS_LE32("crc32_err", ht->crc32_err);
 758         PRINT_STATS_LE32("mh_format_err", ht->mh_format_err);
 759         PRINT_STATS_LE32("agg_crc32_good", ht->agg_crc32_good);
 760         PRINT_STATS_LE32("agg_mpdu_cnt", ht->agg_mpdu_cnt);
 761         PRINT_STATS_LE32("agg_cnt", ht->agg_cnt);
 762         PRINT_STATS_LE32("unsupport_mcs", ht->unsupport_mcs);
 763
 764         mutex_unlock(&mvm->mutex);
 765
 766         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 767         kfree(buf);
 768
 769         return ret;
 770 }
 771 #undef PRINT_STAT_LE32
 772
 773 static ssize_t iwl_dbgfs_fw_restart_write(struct file *file,
 774                                           const char __user *user_buf,
 775                                           size_t count, loff_t *ppos)
 776 {
 777         struct iwl_mvm *mvm = file->private_data;
 778         int ret;
 779
 780         mutex_lock(&mvm->mutex);
 781
 782         /* allow one more restart that we're provoking here */
 783         if (mvm->restart_fw >= 0)
 784                 mvm->restart_fw++;
 785
 786         /* take the return value to make compiler happy - it will fail anyway */
 787         ret = iwl_mvm_send_cmd_pdu(mvm, REPLY_ERROR, CMD_SYNC, 0, NULL);
 788
 789         mutex_unlock(&mvm->mutex);
 790
 791         return count;
 792 }
 793
 794 static ssize_t iwl_dbgfs_fw_nmi_write(struct file *file,
 795                                       const char __user *user_buf,
 796                                       size_t count, loff_t *ppos)
 797 {
 798         struct iwl_mvm *mvm = file->private_data;
 799
 800         iwl_write_prph(mvm->trans, DEVICE_SET_NMI_REG, 1);
 801
 802         return count;
 803 }
 804
 805 static ssize_t
 806 iwl_dbgfs_scan_ant_rxchain_read(struct file *file,
 807                                 char __user *user_buf,
 808                                 size_t count, loff_t *ppos)
 809 {
 810         struct iwl_mvm *mvm = file->private_data;
 811         int pos = 0;
 812         char buf[32];
 813         const size_t bufsz = sizeof(buf);
 814
 815         /* print which antennas were set for the scan command by the user */
 816         pos += scnprintf(buf + pos, bufsz - pos, "Antennas for scan: ");
 817         if (mvm->scan_rx_ant & ANT_A)
 818                 pos += scnprintf(buf + pos, bufsz - pos, "A");
 819         if (mvm->scan_rx_ant & ANT_B)
 820                 pos += scnprintf(buf + pos, bufsz - pos, "B");
 821         if (mvm->scan_rx_ant & ANT_C)
 822                 pos += scnprintf(buf + pos, bufsz - pos, "C");
 823         pos += scnprintf(buf + pos, bufsz - pos, " (%hhx)\n", mvm->scan_rx_ant);
 824
 825         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 826 }
 827
 828 static ssize_t
 829 iwl_dbgfs_scan_ant_rxchain_write(struct file *file,
 830                                  const char __user *user_buf,
 831                                  size_t count, loff_t *ppos)
 832 {
 833         struct iwl_mvm *mvm = file->private_data;
 834         char buf[8] = {};
 835         size_t buf_size = min(count, sizeof(buf) - 1);
 836         u8 scan_rx_ant;
 837
 838         if (copy_from_user(buf, user_buf, buf_size))
 839                 return -EFAULT;
 840         if (sscanf(buf, "%hhx", &scan_rx_ant) != 1)
 841                 return -EINVAL;
 842         if (scan_rx_ant > ANT_ABC)
 843                 return -EINVAL;
 844         if (scan_rx_ant & ~iwl_fw_valid_rx_ant(mvm->fw))
 845                 return -EINVAL;
 846
 847         mvm->scan_rx_ant = scan_rx_ant;
 848
 849         return count;
 850 }
 851
 852
 853 static void iwl_dbgfs_update_bf(struct ieee80211_vif *vif,
 854                                 enum iwl_dbgfs_bf_mask param, int value)
 855 {
 856         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 857         struct iwl_dbgfs_bf *dbgfs_bf = &mvmvif->dbgfs_bf;
 858
 859         dbgfs_bf->mask |= param;
 860
 861         switch (param) {
 862         case MVM_DEBUGFS_BF_ENERGY_DELTA:
 863                 dbgfs_bf->bf_energy_delta = value;
 864                 break;
 865         case MVM_DEBUGFS_BF_ROAMING_ENERGY_DELTA:
 866                 dbgfs_bf->bf_roaming_energy_delta = value;
 867                 break;
 868         case MVM_DEBUGFS_BF_ROAMING_STATE:
 869                 dbgfs_bf->bf_roaming_state = value;
 870                 break;
 871         case MVM_DEBUGFS_BF_TEMP_THRESHOLD:
 872                 dbgfs_bf->bf_temp_threshold = value;
 873                 break;
 874         case MVM_DEBUGFS_BF_TEMP_FAST_FILTER:
 875                 dbgfs_bf->bf_temp_fast_filter = value;
 876                 break;
 877         case MVM_DEBUGFS_BF_TEMP_SLOW_FILTER:
 878                 dbgfs_bf->bf_temp_slow_filter = value;
 879                 break;
 880         case MVM_DEBUGFS_BF_ENABLE_BEACON_FILTER:
 881                 dbgfs_bf->bf_enable_beacon_filter = value;
 882                 break;
 883         case MVM_DEBUGFS_BF_DEBUG_FLAG:
 884                 dbgfs_bf->bf_debug_flag = value;
 885                 break;
 886         case MVM_DEBUGFS_BF_ESCAPE_TIMER:
 887                 dbgfs_bf->bf_escape_timer = value;
 888                 break;
 889         case MVM_DEBUGFS_BA_ENABLE_BEACON_ABORT:
 890                 dbgfs_bf->ba_enable_beacon_abort = value;
 891                 break;
 892         case MVM_DEBUGFS_BA_ESCAPE_TIMER:
 893                 dbgfs_bf->ba_escape_timer = value;
 894                 break;
 895         }
 896 }
 897
 898 static ssize_t iwl_dbgfs_bf_params_write(struct file *file,
 899                                          const char __user *user_buf,
 900                                          size_t count, loff_t *ppos)
 901 {
 902         struct ieee80211_vif *vif = file->private_data;
 903         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 904         struct iwl_mvm *mvm = mvmvif->dbgfs_data;
 905         enum iwl_dbgfs_bf_mask param;
 906         char buf[256] = {};
 907         size_t buf_size = min(count, sizeof(buf) - 1);
 908         int value, ret = 0;
 909
 910         if (copy_from_user(buf, user_buf, buf_size))
 911                 return -EFAULT;
 912
 913         if (!strncmp("bf_energy_delta=", buf, 16)) {
 914                 if (sscanf(buf+16, "%d", &value) != 1)
 915                         return -EINVAL;
 916                 if (value < IWL_BF_ENERGY_DELTA_MIN ||
 917                     value > IWL_BF_ENERGY_DELTA_MAX)
 918                         return -EINVAL;
 919                 param = MVM_DEBUGFS_BF_ENERGY_DELTA;
 920         } else if (!strncmp("bf_roaming_energy_delta=", buf, 24)) {
 921                 if (sscanf(buf+24, "%d", &value) != 1)
 922                         return -EINVAL;
 923                 if (value < IWL_BF_ROAMING_ENERGY_DELTA_MIN ||
 924                     value > IWL_BF_ROAMING_ENERGY_DELTA_MAX)
 925                         return -EINVAL;
 926                 param = MVM_DEBUGFS_BF_ROAMING_ENERGY_DELTA;
 927         } else if (!strncmp("bf_roaming_state=", buf, 17)) {
 928                 if (sscanf(buf+17, "%d", &value) != 1)
 929                         return -EINVAL;
 930                 if (value < IWL_BF_ROAMING_STATE_MIN ||
 931                     value > IWL_BF_ROAMING_STATE_MAX)
 932                         return -EINVAL;
 933                 param = MVM_DEBUGFS_BF_ROAMING_STATE;
 934         } else if (!strncmp("bf_temp_threshold=", buf, 18)) {
 935                 if (sscanf(buf+18, "%d", &value) != 1)
 936                         return -EINVAL;
 937                 if (value < IWL_BF_TEMP_THRESHOLD_MIN ||
 938                     value > IWL_BF_TEMP_THRESHOLD_MAX)
 939                         return -EINVAL;
 940                 param = MVM_DEBUGFS_BF_TEMP_THRESHOLD;
 941         } else if (!strncmp("bf_temp_fast_filter=", buf, 20)) {
 942                 if (sscanf(buf+20, "%d", &value) != 1)
 943                         return -EINVAL;
 944                 if (value < IWL_BF_TEMP_FAST_FILTER_MIN ||
 945                     value > IWL_BF_TEMP_FAST_FILTER_MAX)
 946                         return -EINVAL;
 947                 param = MVM_DEBUGFS_BF_TEMP_FAST_FILTER;
 948         } else if (!strncmp("bf_temp_slow_filter=", buf, 20)) {
 949                 if (sscanf(buf+20, "%d", &value) != 1)
 950                         return -EINVAL;
 951                 if (value < IWL_BF_TEMP_SLOW_FILTER_MIN ||
 952                     value > IWL_BF_TEMP_SLOW_FILTER_MAX)
 953                         return -EINVAL;
 954                 param = MVM_DEBUGFS_BF_TEMP_SLOW_FILTER;
 955         } else if (!strncmp("bf_enable_beacon_filter=", buf, 24)) {
 956                 if (sscanf(buf+24, "%d", &value) != 1)
 957                         return -EINVAL;
 958                 if (value < 0 || value > 1)
 959                         return -EINVAL;
 960                 param = MVM_DEBUGFS_BF_ENABLE_BEACON_FILTER;
 961         } else if (!strncmp("bf_debug_flag=", buf, 14)) {
 962                 if (sscanf(buf+14, "%d", &value) != 1)
 963                         return -EINVAL;
 964                 if (value < 0 || value > 1)
 965                         return -EINVAL;
 966                 param = MVM_DEBUGFS_BF_DEBUG_FLAG;
 967         } else if (!strncmp("bf_escape_timer=", buf, 16)) {
 968                 if (sscanf(buf+16, "%d", &value) != 1)
 969                         return -EINVAL;
 970                 if (value < IWL_BF_ESCAPE_TIMER_MIN ||
 971                     value > IWL_BF_ESCAPE_TIMER_MAX)
 972                         return -EINVAL;
 973                 param = MVM_DEBUGFS_BF_ESCAPE_TIMER;
 974         } else if (!strncmp("ba_escape_timer=", buf, 16)) {
 975                 if (sscanf(buf+16, "%d", &value) != 1)
 976                         return -EINVAL;
 977                 if (value < IWL_BA_ESCAPE_TIMER_MIN ||
 978                     value > IWL_BA_ESCAPE_TIMER_MAX)
 979                         return -EINVAL;
 980                 param = MVM_DEBUGFS_BA_ESCAPE_TIMER;
 981         } else if (!strncmp("ba_enable_beacon_abort=", buf, 23)) {
 982                 if (sscanf(buf+23, "%d", &value) != 1)
 983                         return -EINVAL;
 984                 if (value < 0 || value > 1)
 985                         return -EINVAL;
 986                 param = MVM_DEBUGFS_BA_ENABLE_BEACON_ABORT;
 987         } else {
 988                 return -EINVAL;
 989         }
 990
 991         mutex_lock(&mvm->mutex);
 992         iwl_dbgfs_update_bf(vif, param, value);
 993         if (param == MVM_DEBUGFS_BF_ENABLE_BEACON_FILTER && !value)
 994                 ret = iwl_mvm_disable_beacon_filter(mvm, vif);
 995         else
 996                 ret = iwl_mvm_enable_beacon_filter(mvm, vif);
 997         mutex_unlock(&mvm->mutex);
 998
 999         return ret ?: count;
1000 }
1001
1002 static ssize_t iwl_dbgfs_bf_params_read(struct file *file,
1003                                         char __user *user_buf,
1004                                         size_t count, loff_t *ppos)
1005 {
1006         struct ieee80211_vif *vif = file->private_data;
1007         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1008         char buf[256];
1009         int pos = 0;
1010         const size_t bufsz = sizeof(buf);
1011         struct iwl_beacon_filter_cmd cmd = {
1012                 IWL_BF_CMD_CONFIG_DEFAULTS,
1013                 .bf_enable_beacon_filter =
1014                         cpu_to_le32(IWL_BF_ENABLE_BEACON_FILTER_DEFAULT),
1015                 .ba_enable_beacon_abort =
1016                         cpu_to_le32(IWL_BA_ENABLE_BEACON_ABORT_DEFAULT),
1017         };
1018
1019         iwl_mvm_beacon_filter_debugfs_parameters(vif, &cmd);
1020         if (mvmvif->bf_data.bf_enabled)
1021                 cmd.bf_enable_beacon_filter = cpu_to_le32(1);
1022         else
1023                 cmd.bf_enable_beacon_filter = 0;
1024
1025         pos += scnprintf(buf+pos, bufsz-pos, "bf_energy_delta = %d\n",
1026                          le32_to_cpu(cmd.bf_energy_delta));
1027         pos += scnprintf(buf+pos, bufsz-pos, "bf_roaming_energy_delta = %d\n",
1028                          le32_to_cpu(cmd.bf_roaming_energy_delta));
1029         pos += scnprintf(buf+pos, bufsz-pos, "bf_roaming_state = %d\n",
1030                          le32_to_cpu(cmd.bf_roaming_state));
1031         pos += scnprintf(buf+pos, bufsz-pos, "bf_temp_threshold = %d\n",
1032                          le32_to_cpu(cmd.bf_temp_threshold));
1033         pos += scnprintf(buf+pos, bufsz-pos, "bf_temp_fast_filter = %d\n",
1034                          le32_to_cpu(cmd.bf_temp_fast_filter));
1035         pos += scnprintf(buf+pos, bufsz-pos, "bf_temp_slow_filter = %d\n",
1036                          le32_to_cpu(cmd.bf_temp_slow_filter));
1037         pos += scnprintf(buf+pos, bufsz-pos, "bf_enable_beacon_filter = %d\n",
1038                          le32_to_cpu(cmd.bf_enable_beacon_filter));
1039         pos += scnprintf(buf+pos, bufsz-pos, "bf_debug_flag = %d\n",
1040                          le32_to_cpu(cmd.bf_debug_flag));
1041         pos += scnprintf(buf+pos, bufsz-pos, "bf_escape_timer = %d\n",
1042                          le32_to_cpu(cmd.bf_escape_timer));
1043         pos += scnprintf(buf+pos, bufsz-pos, "ba_escape_timer = %d\n",
1044                          le32_to_cpu(cmd.ba_escape_timer));
1045         pos += scnprintf(buf+pos, bufsz-pos, "ba_enable_beacon_abort = %d\n",
1046                          le32_to_cpu(cmd.ba_enable_beacon_abort));
1047
1048         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
1049 }
1050
1051 #ifdef CONFIG_PM_SLEEP
1052 static ssize_t iwl_dbgfs_d3_sram_write(struct file *file,
1053                                        const char __user *user_buf,
1054                                        size_t count, loff_t *ppos)
1055 {
1056         struct iwl_mvm *mvm = file->private_data;
1057         char buf[8] = {};
1058         size_t buf_size = min(count, sizeof(buf) - 1);
1059         int store;
1060
1061         if (copy_from_user(buf, user_buf, buf_size))
1062                 return -EFAULT;
1063
1064         if (sscanf(buf, "%d", &store) != 1)
1065                 return -EINVAL;
1066
1067         mvm->store_d3_resume_sram = store;
1068
1069         return count;
1070 }
1071
1072 static ssize_t iwl_dbgfs_d3_sram_read(struct file *file, char __user *user_buf,
1073                                       size_t count, loff_t *ppos)
1074 {
1075         struct iwl_mvm *mvm = file->private_data;
1076         const struct fw_img *img;
1077         int ofs, len, pos = 0;
1078         size_t bufsz, ret;
1079         char *buf;
1080         u8 *ptr = mvm->d3_resume_sram;
1081
1082         img = &mvm->fw->img[IWL_UCODE_WOWLAN];
1083         len = img->sec[IWL_UCODE_SECTION_DATA].len;
1084
1085         bufsz = len * 4 + 256;
1086         buf = kzalloc(bufsz, GFP_KERNEL);
1087         if (!buf)
1088                 return -ENOMEM;
1089
1090         pos += scnprintf(buf, bufsz, "D3 SRAM capture: %sabled\n",
1091                          mvm->store_d3_resume_sram ? "en" : "dis");
1092
1093         if (ptr) {
1094                 for (ofs = 0; ofs < len; ofs += 16) {
1095                         pos += scnprintf(buf + pos, bufsz - pos,
1096                                          "0x%.4x ", ofs);
1097                         hex_dump_to_buffer(ptr + ofs, 16, 16, 1, buf + pos,
1098                                            bufsz - pos, false);
1099                         pos += strlen(buf + pos);
1100                         if (bufsz - pos > 0)
1101                                 buf[pos++] = '\n';
1102                 }
1103         } else {
1104                 pos += scnprintf(buf + pos, bufsz - pos,
1105                                  "(no data captured)\n");
1106         }
1107
1108         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
1109
1110         kfree(buf);
1111
1112         return ret;
1113 }
1114 #endif
1115
1116 #define MVM_DEBUGFS_READ_FILE_OPS(name)                                 \
1117 static const struct file_operations iwl_dbgfs_##name##_ops = {          \
1118         .read = iwl_dbgfs_##name##_read,                                \
1119         .open = simple_open,                                            \
1120         .llseek = generic_file_llseek,                                  \
1121 }
1122
1123 #define MVM_DEBUGFS_READ_WRITE_FILE_OPS(name)                           \
1124 static const struct file_operations iwl_dbgfs_##name##_ops = {          \
1125         .write = iwl_dbgfs_##name##_write,                              \
1126         .read = iwl_dbgfs_##name##_read,                                \
1127         .open = simple_open,                                            \
1128         .llseek = generic_file_llseek,                                  \
1129 };
1130
1131 #define MVM_DEBUGFS_WRITE_FILE_OPS(name)                                \
1132 static const struct file_operations iwl_dbgfs_##name##_ops = {          \
1133         .write = iwl_dbgfs_##name##_write,                              \
1134         .open = simple_open,                                            \
1135         .llseek = generic_file_llseek,                                  \
1136 };
1137
1138 #define MVM_DEBUGFS_ADD_FILE(name, parent, mode) do {                   \
1139                 if (!debugfs_create_file(#name, mode, parent, mvm,      \
1140                                          &iwl_dbgfs_##name##_ops))      \
1141                         goto err;                                       \
1142         } while (0)
1143
1144 #define MVM_DEBUGFS_ADD_FILE_VIF(name, parent, mode) do {               \
1145                 if (!debugfs_create_file(#name, mode, parent, vif,      \
1146                                          &iwl_dbgfs_##name##_ops))      \
1147                         goto err;                                       \
1148         } while (0)
1149
1150 /* Device wide debugfs entries */
1151 MVM_DEBUGFS_WRITE_FILE_OPS(tx_flush);
1152 MVM_DEBUGFS_WRITE_FILE_OPS(sta_drain);
1153 MVM_DEBUGFS_READ_WRITE_FILE_OPS(sram);
1154 MVM_DEBUGFS_READ_FILE_OPS(stations);
1155 MVM_DEBUGFS_READ_FILE_OPS(bt_notif);
1156 MVM_DEBUGFS_READ_FILE_OPS(bt_cmd);
1157 MVM_DEBUGFS_READ_WRITE_FILE_OPS(disable_power_off);
1158 MVM_DEBUGFS_READ_FILE_OPS(fw_rx_stats);
1159 MVM_DEBUGFS_WRITE_FILE_OPS(fw_restart);
1160 MVM_DEBUGFS_WRITE_FILE_OPS(fw_nmi);
1161 MVM_DEBUGFS_READ_WRITE_FILE_OPS(scan_ant_rxchain);
1162
1163 #ifdef CONFIG_PM_SLEEP
1164 MVM_DEBUGFS_READ_WRITE_FILE_OPS(d3_sram);
1165 #endif
1166
1167 /* Interface specific debugfs entries */
1168 MVM_DEBUGFS_READ_FILE_OPS(mac_params);
1169 MVM_DEBUGFS_READ_WRITE_FILE_OPS(pm_params);
1170 MVM_DEBUGFS_READ_WRITE_FILE_OPS(bf_params);
1171
1172 int iwl_mvm_dbgfs_register(struct iwl_mvm *mvm, struct dentry *dbgfs_dir)
1173 {
1174         char buf[100];
1175
1176         mvm->debugfs_dir = dbgfs_dir;
1177
1178         MVM_DEBUGFS_ADD_FILE(tx_flush, mvm->debugfs_dir, S_IWUSR);
1179         MVM_DEBUGFS_ADD_FILE(sta_drain, mvm->debugfs_dir, S_IWUSR);
1180         MVM_DEBUGFS_ADD_FILE(sram, mvm->debugfs_dir, S_IWUSR | S_IRUSR);
1181         MVM_DEBUGFS_ADD_FILE(stations, dbgfs_dir, S_IRUSR);
1182         MVM_DEBUGFS_ADD_FILE(bt_notif, dbgfs_dir, S_IRUSR);
1183         MVM_DEBUGFS_ADD_FILE(bt_cmd, dbgfs_dir, S_IRUSR);
1184         if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_DEVICE_PS_CMD)
1185                 MVM_DEBUGFS_ADD_FILE(disable_power_off, mvm->debugfs_dir,
1186                                      S_IRUSR | S_IWUSR);
1187         MVM_DEBUGFS_ADD_FILE(fw_rx_stats, mvm->debugfs_dir, S_IRUSR);
1188         MVM_DEBUGFS_ADD_FILE(fw_restart, mvm->debugfs_dir, S_IWUSR);
1189         MVM_DEBUGFS_ADD_FILE(fw_nmi, mvm->debugfs_dir, S_IWUSR);
1190         MVM_DEBUGFS_ADD_FILE(scan_ant_rxchain, mvm->debugfs_dir,
1191                              S_IWUSR | S_IRUSR);
1192 #ifdef CONFIG_PM_SLEEP
1193         MVM_DEBUGFS_ADD_FILE(d3_sram, mvm->debugfs_dir, S_IRUSR | S_IWUSR);
1194         MVM_DEBUGFS_ADD_FILE(d3_test, mvm->debugfs_dir, S_IRUSR);
1195         if (!debugfs_create_bool("d3_wake_sysassert", S_IRUSR | S_IWUSR,
1196                                  mvm->debugfs_dir, &mvm->d3_wake_sysassert))
1197                 goto err;
1198 #endif
1199
1200         /*
1201          * Create a symlink with mac80211. It will be removed when mac80211
1202          * exists (before the opmode exists which removes the target.)
1203          */
1204         snprintf(buf, 100, "../../%s/%s",
1205                  dbgfs_dir->d_parent->d_parent->d_name.name,
1206                  dbgfs_dir->d_parent->d_name.name);
1207         if (!debugfs_create_symlink("iwlwifi", mvm->hw->wiphy->debugfsdir, buf))
1208                 goto err;
1209
1210         return 0;
1211 err:
1212         IWL_ERR(mvm, "Can't create the mvm debugfs directory\n");
1213         return -ENOMEM;
1214 }
1215
1216 void iwl_mvm_vif_dbgfs_register(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1217 {
1218         struct dentry *dbgfs_dir = vif->debugfs_dir;
1219         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1220         char buf[100];
1221
1222         /*
1223          * Check if debugfs directory already exist before creating it.
1224          * This may happen when, for example, resetting hw or suspend-resume
1225          */
1226         if (!dbgfs_dir || mvmvif->dbgfs_dir)
1227                 return;
1228
1229         mvmvif->dbgfs_dir = debugfs_create_dir("iwlmvm", dbgfs_dir);
1230         mvmvif->dbgfs_data = mvm;
1231
1232         if (!mvmvif->dbgfs_dir) {
1233                 IWL_ERR(mvm, "Failed to create debugfs directory under %s\n",
1234                         dbgfs_dir->d_name.name);
1235                 return;
1236         }
1237
1238         if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM &&
1239             vif->type == NL80211_IFTYPE_STATION && !vif->p2p)
1240                 MVM_DEBUGFS_ADD_FILE_VIF(pm_params, mvmvif->dbgfs_dir, S_IWUSR |
1241                                          S_IRUSR);
1242
1243         MVM_DEBUGFS_ADD_FILE_VIF(mac_params, mvmvif->dbgfs_dir,
1244                                  S_IRUSR);
1245
1246         if (vif->type == NL80211_IFTYPE_STATION && !vif->p2p &&
1247             mvmvif == mvm->bf_allowed_vif)
1248                 MVM_DEBUGFS_ADD_FILE_VIF(bf_params, mvmvif->dbgfs_dir,
1249                                          S_IRUSR | S_IWUSR);
1250
1251         /*
1252          * Create symlink for convenience pointing to interface specific
1253          * debugfs entries for the driver. For example, under
1254          * /sys/kernel/debug/iwlwifi/0000\:02\:00.0/iwlmvm/
1255          * find
1256          * netdev:wlan0 -> ../../../ieee80211/phy0/netdev:wlan0/iwlmvm/
1257          */
1258         snprintf(buf, 100, "../../../%s/%s/%s/%s",
1259                  dbgfs_dir->d_parent->d_parent->d_name.name,
1260                  dbgfs_dir->d_parent->d_name.name,
1261                  dbgfs_dir->d_name.name,
1262                  mvmvif->dbgfs_dir->d_name.name);
1263
1264         mvmvif->dbgfs_slink = debugfs_create_symlink(dbgfs_dir->d_name.name,
1265                                                      mvm->debugfs_dir, buf);
1266         if (!mvmvif->dbgfs_slink)
1267                 IWL_ERR(mvm, "Can't create debugfs symbolic link under %s\n",
1268                         dbgfs_dir->d_name.name);
1269         return;
1270 err:
1271         IWL_ERR(mvm, "Can't create debugfs entity\n");
1272 }
1273
1274 void iwl_mvm_vif_dbgfs_clean(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1275 {
1276         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1277
1278         debugfs_remove(mvmvif->dbgfs_slink);
1279         mvmvif->dbgfs_slink = NULL;
1280
1281         debugfs_remove_recursive(mvmvif->dbgfs_dir);
1282         mvmvif->dbgfs_dir = NULL;
1283 }