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.
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  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  *
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  32  *
  33  * Copyright(c) 2012 - 2013 Intel Corporation. All rights reserved.
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  37  * modification, are permitted provided that the following conditions
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  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
  67 struct iwl_dbgfs_mvm_ctx {
  68         struct iwl_mvm *mvm;
  69         struct ieee80211_vif *vif;
  70 };
  71
  72 static ssize_t iwl_dbgfs_tx_flush_write(struct file *file,
  73                                         const char __user *user_buf,
  74                                         size_t count, loff_t *ppos)
  75 {
  76         struct iwl_mvm *mvm = file->private_data;
  77
  78         char buf[16];
  79         int buf_size, ret;
  80         u32 scd_q_msk;
  81
  82         if (!mvm->ucode_loaded || mvm->cur_ucode != IWL_UCODE_REGULAR)
  83                 return -EIO;
  84
  85         memset(buf, 0, sizeof(buf));
  86         buf_size = min(count, sizeof(buf) - 1);
  87         if (copy_from_user(buf, user_buf, buf_size))
  88                 return -EFAULT;
  89
  90         if (sscanf(buf, "%x", &scd_q_msk) != 1)
  91                 return -EINVAL;
  92
  93         IWL_ERR(mvm, "FLUSHING queues: scd_q_msk = 0x%x\n", scd_q_msk);
  94
  95         mutex_lock(&mvm->mutex);
  96         ret =  iwl_mvm_flush_tx_path(mvm, scd_q_msk, true) ? : count;
  97         mutex_unlock(&mvm->mutex);
  98
  99         return ret;
 100 }
 101
 102 static ssize_t iwl_dbgfs_sta_drain_write(struct file *file,
 103                                          const char __user *user_buf,
 104                                          size_t count, loff_t *ppos)
 105 {
 106         struct iwl_mvm *mvm = file->private_data;
 107         struct ieee80211_sta *sta;
 108
 109         char buf[8];
 110         int buf_size, sta_id, drain, ret;
 111
 112         if (!mvm->ucode_loaded || mvm->cur_ucode != IWL_UCODE_REGULAR)
 113                 return -EIO;
 114
 115         memset(buf, 0, sizeof(buf));
 116         buf_size = min(count, sizeof(buf) - 1);
 117         if (copy_from_user(buf, user_buf, buf_size))
 118                 return -EFAULT;
 119
 120         if (sscanf(buf, "%d %d", &sta_id, &drain) != 2)
 121                 return -EINVAL;
 122
 123         mutex_lock(&mvm->mutex);
 124
 125         sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
 126                                         lockdep_is_held(&mvm->mutex));
 127         if (IS_ERR_OR_NULL(sta))
 128                 ret = -ENOENT;
 129         else
 130                 ret = iwl_mvm_drain_sta(mvm, (void *)sta->drv_priv, drain) ? :
 131                         count;
 132
 133         mutex_unlock(&mvm->mutex);
 134
 135         return ret;
 136 }
 137
 138 static ssize_t iwl_dbgfs_sram_read(struct file *file, char __user *user_buf,
 139                                    size_t count, loff_t *ppos)
 140 {
 141         struct iwl_mvm *mvm = file->private_data;
 142         const struct fw_img *img;
 143         int ofs, len, pos = 0;
 144         size_t bufsz, ret;
 145         char *buf;
 146         u8 *ptr;
 147
 148         if (!mvm->ucode_loaded)
 149                 return -EINVAL;
 150
 151         /* default is to dump the entire data segment */
 152         if (!mvm->dbgfs_sram_offset && !mvm->dbgfs_sram_len) {
 153                 img = &mvm->fw->img[mvm->cur_ucode];
 154                 ofs = img->sec[IWL_UCODE_SECTION_DATA].offset;
 155                 len = img->sec[IWL_UCODE_SECTION_DATA].len;
 156         } else {
 157                 ofs = mvm->dbgfs_sram_offset;
 158                 len = mvm->dbgfs_sram_len;
 159         }
 160
 161         bufsz = len * 4 + 256;
 162         buf = kzalloc(bufsz, GFP_KERNEL);
 163         if (!buf)
 164                 return -ENOMEM;
 165
 166         ptr = kzalloc(len, GFP_KERNEL);
 167         if (!ptr) {
 168                 kfree(buf);
 169                 return -ENOMEM;
 170         }
 171
 172         pos += scnprintf(buf + pos, bufsz - pos, "sram_len: 0x%x\n", len);
 173         pos += scnprintf(buf + pos, bufsz - pos, "sram_offset: 0x%x\n", ofs);
 174
 175         iwl_trans_read_mem_bytes(mvm->trans, ofs, ptr, len);
 176         for (ofs = 0; ofs < len; ofs += 16) {
 177                 pos += scnprintf(buf + pos, bufsz - pos, "0x%.4x ", ofs);
 178                 hex_dump_to_buffer(ptr + ofs, 16, 16, 1, buf + pos,
 179                                    bufsz - pos, false);
 180                 pos += strlen(buf + pos);
 181                 if (bufsz - pos > 0)
 182                         buf[pos++] = '\n';
 183         }
 184
 185         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 186
 187         kfree(buf);
 188         kfree(ptr);
 189
 190         return ret;
 191 }
 192
 193 static ssize_t iwl_dbgfs_sram_write(struct file *file,
 194                                     const char __user *user_buf, size_t count,
 195                                     loff_t *ppos)
 196 {
 197         struct iwl_mvm *mvm = file->private_data;
 198         char buf[64];
 199         int buf_size;
 200         u32 offset, len;
 201
 202         memset(buf, 0, sizeof(buf));
 203         buf_size = min(count, sizeof(buf) -  1);
 204         if (copy_from_user(buf, user_buf, buf_size))
 205                 return -EFAULT;
 206
 207         if (sscanf(buf, "%x,%x", &offset, &len) == 2) {
 208                 if ((offset & 0x3) || (len & 0x3))
 209                         return -EINVAL;
 210                 mvm->dbgfs_sram_offset = offset;
 211                 mvm->dbgfs_sram_len = len;
 212         } else {
 213                 mvm->dbgfs_sram_offset = 0;
 214                 mvm->dbgfs_sram_len = 0;
 215         }
 216
 217         return count;
 218 }
 219
 220 static ssize_t iwl_dbgfs_stations_read(struct file *file, char __user *user_buf,
 221                                        size_t count, loff_t *ppos)
 222 {
 223         struct iwl_mvm *mvm = file->private_data;
 224         struct ieee80211_sta *sta;
 225         char buf[400];
 226         int i, pos = 0, bufsz = sizeof(buf);
 227
 228         mutex_lock(&mvm->mutex);
 229
 230         for (i = 0; i < IWL_MVM_STATION_COUNT; i++) {
 231                 pos += scnprintf(buf + pos, bufsz - pos, "%.2d: ", i);
 232                 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
 233                                                 lockdep_is_held(&mvm->mutex));
 234                 if (!sta)
 235                         pos += scnprintf(buf + pos, bufsz - pos, "N/A\n");
 236                 else if (IS_ERR(sta))
 237                         pos += scnprintf(buf + pos, bufsz - pos, "%ld\n",
 238                                          PTR_ERR(sta));
 239                 else
 240                         pos += scnprintf(buf + pos, bufsz - pos, "%pM\n",
 241                                          sta->addr);
 242         }
 243
 244         mutex_unlock(&mvm->mutex);
 245
 246         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 247 }
 248
 249 static ssize_t iwl_dbgfs_power_down_allow_write(struct file *file,
 250                                                 const char __user *user_buf,
 251                                                 size_t count, loff_t *ppos)
 252 {
 253         struct iwl_mvm *mvm = file->private_data;
 254         char buf[8] = {};
 255         int allow;
 256
 257         if (!mvm->ucode_loaded)
 258                 return -EIO;
 259
 260         if (copy_from_user(buf, user_buf, sizeof(buf)))
 261                 return -EFAULT;
 262
 263         if (sscanf(buf, "%d", &allow) != 1)
 264                 return -EINVAL;
 265
 266         IWL_DEBUG_POWER(mvm, "%s device power down\n",
 267                         allow ? "allow" : "prevent");
 268
 269         /*
 270          * TODO: Send REPLY_DEBUG_CMD (0xf0) when FW support it
 271          */
 272
 273         return count;
 274 }
 275
 276 static ssize_t iwl_dbgfs_power_down_d3_allow_write(struct file *file,
 277                                                    const char __user *user_buf,
 278                                                    size_t count, loff_t *ppos)
 279 {
 280         struct iwl_mvm *mvm = file->private_data;
 281         char buf[8] = {};
 282         int allow;
 283
 284         if (copy_from_user(buf, user_buf, sizeof(buf)))
 285                 return -EFAULT;
 286
 287         if (sscanf(buf, "%d", &allow) != 1)
 288                 return -EINVAL;
 289
 290         IWL_DEBUG_POWER(mvm, "%s device power down in d3\n",
 291                         allow ? "allow" : "prevent");
 292
 293         /*
 294          * TODO: When WoWLAN FW alive notification happens, driver will send
 295          * REPLY_DEBUG_CMD setting power_down_allow flag according to
 296          * mvm->prevent_power_down_d3
 297          */
 298         mvm->prevent_power_down_d3 = !allow;
 299
 300         return count;
 301 }
 302
 303 static void iwl_dbgfs_update_pm(struct iwl_mvm *mvm,
 304                                  struct ieee80211_vif *vif,
 305                                  enum iwl_dbgfs_pm_mask param, int val)
 306 {
 307         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 308         struct iwl_dbgfs_pm *dbgfs_pm = &mvmvif->dbgfs_pm;
 309
 310         dbgfs_pm->mask |= param;
 311
 312         switch (param) {
 313         case MVM_DEBUGFS_PM_KEEP_ALIVE: {
 314                 struct ieee80211_hw *hw = mvm->hw;
 315                 int dtimper = hw->conf.ps_dtim_period ?: 1;
 316                 int dtimper_msec = dtimper * vif->bss_conf.beacon_int;
 317
 318                 IWL_DEBUG_POWER(mvm, "debugfs: set keep_alive= %d sec\n", val);
 319                 if (val * MSEC_PER_SEC < 3 * dtimper_msec) {
 320                         IWL_WARN(mvm,
 321                                  "debugfs: keep alive period (%ld msec) is less than minimum required (%d msec)\n",
 322                                  val * MSEC_PER_SEC, 3 * dtimper_msec);
 323                 }
 324                 dbgfs_pm->keep_alive_seconds = val;
 325                 break;
 326         }
 327         case MVM_DEBUGFS_PM_SKIP_OVER_DTIM:
 328                 IWL_DEBUG_POWER(mvm, "skip_over_dtim %s\n",
 329                                 val ? "enabled" : "disabled");
 330                 dbgfs_pm->skip_over_dtim = val;
 331                 break;
 332         case MVM_DEBUGFS_PM_SKIP_DTIM_PERIODS:
 333                 IWL_DEBUG_POWER(mvm, "skip_dtim_periods=%d\n", val);
 334                 dbgfs_pm->skip_dtim_periods = val;
 335                 break;
 336         case MVM_DEBUGFS_PM_RX_DATA_TIMEOUT:
 337                 IWL_DEBUG_POWER(mvm, "rx_data_timeout=%d\n", val);
 338                 dbgfs_pm->rx_data_timeout = val;
 339                 break;
 340         case MVM_DEBUGFS_PM_TX_DATA_TIMEOUT:
 341                 IWL_DEBUG_POWER(mvm, "tx_data_timeout=%d\n", val);
 342                 dbgfs_pm->tx_data_timeout = val;
 343                 break;
 344         case MVM_DEBUGFS_PM_DISABLE_POWER_OFF:
 345                 IWL_DEBUG_POWER(mvm, "disable_power_off=%d\n", val);
 346                 dbgfs_pm->disable_power_off = val;
 347         case MVM_DEBUGFS_PM_LPRX_ENA:
 348                 IWL_DEBUG_POWER(mvm, "lprx %s\n", val ? "enabled" : "disabled");
 349                 dbgfs_pm->lprx_ena = val;
 350                 break;
 351         case MVM_DEBUGFS_PM_LPRX_RSSI_THRESHOLD:
 352                 IWL_DEBUG_POWER(mvm, "lprx_rssi_threshold=%d\n", val);
 353                 dbgfs_pm->lprx_rssi_threshold = val;
 354                 break;
 355         case MVM_DEBUGFS_PM_SNOOZE_ENABLE:
 356                 IWL_DEBUG_POWER(mvm, "snooze_enable=%d\n", val);
 357                 dbgfs_pm->snooze_ena = val;
 358                 break;
 359         }
 360 }
 361
 362 static ssize_t iwl_dbgfs_pm_params_write(struct file *file,
 363                                          const char __user *user_buf,
 364                                          size_t count, loff_t *ppos)
 365 {
 366         struct ieee80211_vif *vif = file->private_data;
 367         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 368         struct iwl_mvm *mvm = mvmvif->dbgfs_data;
 369         enum iwl_dbgfs_pm_mask param;
 370         char buf[32] = {};
 371         int val;
 372         int ret;
 373
 374         if (copy_from_user(buf, user_buf, sizeof(buf)))
 375                 return -EFAULT;
 376
 377         if (!strncmp("keep_alive=", buf, 11)) {
 378                 if (sscanf(buf + 11, "%d", &val) != 1)
 379                         return -EINVAL;
 380                 param = MVM_DEBUGFS_PM_KEEP_ALIVE;
 381         } else if (!strncmp("skip_over_dtim=", buf, 15)) {
 382                 if (sscanf(buf + 15, "%d", &val) != 1)
 383                         return -EINVAL;
 384                 param = MVM_DEBUGFS_PM_SKIP_OVER_DTIM;
 385         } else if (!strncmp("skip_dtim_periods=", buf, 18)) {
 386                 if (sscanf(buf + 18, "%d", &val) != 1)
 387                         return -EINVAL;
 388                 param = MVM_DEBUGFS_PM_SKIP_DTIM_PERIODS;
 389         } else if (!strncmp("rx_data_timeout=", buf, 16)) {
 390                 if (sscanf(buf + 16, "%d", &val) != 1)
 391                         return -EINVAL;
 392                 param = MVM_DEBUGFS_PM_RX_DATA_TIMEOUT;
 393         } else if (!strncmp("tx_data_timeout=", buf, 16)) {
 394                 if (sscanf(buf + 16, "%d", &val) != 1)
 395                         return -EINVAL;
 396                 param = MVM_DEBUGFS_PM_TX_DATA_TIMEOUT;
 397         } else if (!strncmp("disable_power_off=", buf, 18)) {
 398                 if (sscanf(buf + 18, "%d", &val) != 1)
 399                         return -EINVAL;
 400                 param = MVM_DEBUGFS_PM_DISABLE_POWER_OFF;
 401         } else if (!strncmp("lprx=", buf, 5)) {
 402                 if (sscanf(buf + 5, "%d", &val) != 1)
 403                         return -EINVAL;
 404                 param = MVM_DEBUGFS_PM_LPRX_ENA;
 405         } else if (!strncmp("lprx_rssi_threshold=", buf, 20)) {
 406                 if (sscanf(buf + 20, "%d", &val) != 1)
 407                         return -EINVAL;
 408                 if (val > POWER_LPRX_RSSI_THRESHOLD_MAX || val <
 409                     POWER_LPRX_RSSI_THRESHOLD_MIN)
 410                         return -EINVAL;
 411                 param = MVM_DEBUGFS_PM_LPRX_RSSI_THRESHOLD;
 412         } else if (!strncmp("snooze_enable=", buf, 14)) {
 413                 if (sscanf(buf + 14, "%d", &val) != 1)
 414                         return -EINVAL;
 415                 param = MVM_DEBUGFS_PM_SNOOZE_ENABLE;
 416         } else {
 417                 return -EINVAL;
 418         }
 419
 420         mutex_lock(&mvm->mutex);
 421         iwl_dbgfs_update_pm(mvm, vif, param, val);
 422         ret = iwl_mvm_power_update_mode(mvm, vif);
 423         mutex_unlock(&mvm->mutex);
 424
 425         return ret ?: count;
 426 }
 427
 428 static ssize_t iwl_dbgfs_pm_params_read(struct file *file,
 429                                         char __user *user_buf,
 430                                         size_t count, loff_t *ppos)
 431 {
 432         struct ieee80211_vif *vif = file->private_data;
 433         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 434         struct iwl_mvm *mvm = mvmvif->dbgfs_data;
 435         char buf[512];
 436         int bufsz = sizeof(buf);
 437         int pos;
 438
 439         pos = iwl_mvm_power_dbgfs_read(mvm, vif, buf, bufsz);
 440
 441         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 442 }
 443
 444 static ssize_t iwl_dbgfs_mac_params_read(struct file *file,
 445                                          char __user *user_buf,
 446                                          size_t count, loff_t *ppos)
 447 {
 448         struct ieee80211_vif *vif = file->private_data;
 449         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 450         struct iwl_mvm *mvm = mvmvif->dbgfs_data;
 451         u8 ap_sta_id;
 452         struct ieee80211_chanctx_conf *chanctx_conf;
 453         char buf[512];
 454         int bufsz = sizeof(buf);
 455         int pos = 0;
 456         int i;
 457
 458         mutex_lock(&mvm->mutex);
 459
 460         ap_sta_id = mvmvif->ap_sta_id;
 461
 462         pos += scnprintf(buf+pos, bufsz-pos, "mac id/color: %d / %d\n",
 463                          mvmvif->id, mvmvif->color);
 464         pos += scnprintf(buf+pos, bufsz-pos, "bssid: %pM\n",
 465                          vif->bss_conf.bssid);
 466         pos += scnprintf(buf+pos, bufsz-pos, "QoS:\n");
 467         for (i = 0; i < ARRAY_SIZE(mvmvif->queue_params); i++) {
 468                 pos += scnprintf(buf+pos, bufsz-pos,
 469                                  "\t%d: txop:%d - cw_min:%d - cw_max = %d - aifs = %d upasd = %d\n",
 470                                  i, mvmvif->queue_params[i].txop,
 471                                  mvmvif->queue_params[i].cw_min,
 472                                  mvmvif->queue_params[i].cw_max,
 473                                  mvmvif->queue_params[i].aifs,
 474                                  mvmvif->queue_params[i].uapsd);
 475         }
 476
 477         if (vif->type == NL80211_IFTYPE_STATION &&
 478             ap_sta_id != IWL_MVM_STATION_COUNT) {
 479                 struct ieee80211_sta *sta;
 480                 struct iwl_mvm_sta *mvm_sta;
 481
 482                 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[ap_sta_id],
 483                                                 lockdep_is_held(&mvm->mutex));
 484                 mvm_sta = (void *)sta->drv_priv;
 485                 pos += scnprintf(buf+pos, bufsz-pos,
 486                                  "ap_sta_id %d - reduced Tx power %d\n",
 487                                  ap_sta_id, mvm_sta->bt_reduced_txpower);
 488         }
 489
 490         rcu_read_lock();
 491         chanctx_conf = rcu_dereference(vif->chanctx_conf);
 492         if (chanctx_conf) {
 493                 pos += scnprintf(buf+pos, bufsz-pos,
 494                                  "idle rx chains %d, active rx chains: %d\n",
 495                                  chanctx_conf->rx_chains_static,
 496                                  chanctx_conf->rx_chains_dynamic);
 497         }
 498         rcu_read_unlock();
 499
 500         mutex_unlock(&mvm->mutex);
 501
 502         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 503 }
 504
 505 #define BT_MBOX_MSG(_notif, _num, _field)                                    \
 506         ((le32_to_cpu((_notif)->mbox_msg[(_num)]) & BT_MBOX##_num##_##_field)\
 507         >> BT_MBOX##_num##_##_field##_POS)
 508
 509
 510 #define BT_MBOX_PRINT(_num, _field, _end)                                   \
 511                         pos += scnprintf(buf + pos, bufsz - pos,            \
 512                                          "\t%s: %d%s",                      \
 513                                          #_field,                           \
 514                                          BT_MBOX_MSG(notif, _num, _field),  \
 515                                          true ? "\n" : ", ");
 516
 517 static ssize_t iwl_dbgfs_bt_notif_read(struct file *file, char __user *user_buf,
 518                                        size_t count, loff_t *ppos)
 519 {
 520         struct iwl_mvm *mvm = file->private_data;
 521         struct iwl_bt_coex_profile_notif *notif = &mvm->last_bt_notif;
 522         char *buf;
 523         int ret, pos = 0, bufsz = sizeof(char) * 1024;
 524
 525         buf = kmalloc(bufsz, GFP_KERNEL);
 526         if (!buf)
 527                 return -ENOMEM;
 528
 529         mutex_lock(&mvm->mutex);
 530
 531         pos += scnprintf(buf+pos, bufsz-pos, "MBOX dw0:\n");
 532
 533         BT_MBOX_PRINT(0, LE_SLAVE_LAT, false);
 534         BT_MBOX_PRINT(0, LE_PROF1, false);
 535         BT_MBOX_PRINT(0, LE_PROF2, false);
 536         BT_MBOX_PRINT(0, LE_PROF_OTHER, false);
 537         BT_MBOX_PRINT(0, CHL_SEQ_N, false);
 538         BT_MBOX_PRINT(0, INBAND_S, false);
 539         BT_MBOX_PRINT(0, LE_MIN_RSSI, false);
 540         BT_MBOX_PRINT(0, LE_SCAN, false);
 541         BT_MBOX_PRINT(0, LE_ADV, false);
 542         BT_MBOX_PRINT(0, LE_MAX_TX_POWER, false);
 543         BT_MBOX_PRINT(0, OPEN_CON_1, true);
 544
 545         pos += scnprintf(buf+pos, bufsz-pos, "MBOX dw1:\n");
 546
 547         BT_MBOX_PRINT(1, BR_MAX_TX_POWER, false);
 548         BT_MBOX_PRINT(1, IP_SR, false);
 549         BT_MBOX_PRINT(1, LE_MSTR, false);
 550         BT_MBOX_PRINT(1, AGGR_TRFC_LD, false);
 551         BT_MBOX_PRINT(1, MSG_TYPE, false);
 552         BT_MBOX_PRINT(1, SSN, true);
 553
 554         pos += scnprintf(buf+pos, bufsz-pos, "MBOX dw2:\n");
 555
 556         BT_MBOX_PRINT(2, SNIFF_ACT, false);
 557         BT_MBOX_PRINT(2, PAG, false);
 558         BT_MBOX_PRINT(2, INQUIRY, false);
 559         BT_MBOX_PRINT(2, CONN, false);
 560         BT_MBOX_PRINT(2, SNIFF_INTERVAL, false);
 561         BT_MBOX_PRINT(2, DISC, false);
 562         BT_MBOX_PRINT(2, SCO_TX_ACT, false);
 563         BT_MBOX_PRINT(2, SCO_RX_ACT, false);
 564         BT_MBOX_PRINT(2, ESCO_RE_TX, false);
 565         BT_MBOX_PRINT(2, SCO_DURATION, true);
 566
 567         pos += scnprintf(buf+pos, bufsz-pos, "MBOX dw3:\n");
 568
 569         BT_MBOX_PRINT(3, SCO_STATE, false);
 570         BT_MBOX_PRINT(3, SNIFF_STATE, false);
 571         BT_MBOX_PRINT(3, A2DP_STATE, false);
 572         BT_MBOX_PRINT(3, ACL_STATE, false);
 573         BT_MBOX_PRINT(3, MSTR_STATE, false);
 574         BT_MBOX_PRINT(3, OBX_STATE, false);
 575         BT_MBOX_PRINT(3, OPEN_CON_2, false);
 576         BT_MBOX_PRINT(3, TRAFFIC_LOAD, false);
 577         BT_MBOX_PRINT(3, CHL_SEQN_LSB, false);
 578         BT_MBOX_PRINT(3, INBAND_P, false);
 579         BT_MBOX_PRINT(3, MSG_TYPE_2, false);
 580         BT_MBOX_PRINT(3, SSN_2, false);
 581         BT_MBOX_PRINT(3, UPDATE_REQUEST, true);
 582
 583         pos += scnprintf(buf+pos, bufsz-pos, "bt_status = %d\n",
 584                                          notif->bt_status);
 585         pos += scnprintf(buf+pos, bufsz-pos, "bt_open_conn = %d\n",
 586                                          notif->bt_open_conn);
 587         pos += scnprintf(buf+pos, bufsz-pos, "bt_traffic_load = %d\n",
 588                                          notif->bt_traffic_load);
 589         pos += scnprintf(buf+pos, bufsz-pos, "bt_agg_traffic_load = %d\n",
 590                                          notif->bt_agg_traffic_load);
 591         pos += scnprintf(buf+pos, bufsz-pos, "bt_ci_compliance = %d\n",
 592                                          notif->bt_ci_compliance);
 593
 594         mutex_unlock(&mvm->mutex);
 595
 596         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 597         kfree(buf);
 598
 599         return ret;
 600 }
 601 #undef BT_MBOX_PRINT
 602
 603 #define PRINT_STATS_LE32(_str, _val)                                    \
 604                          pos += scnprintf(buf + pos, bufsz - pos,       \
 605                                           fmt_table, _str,              \
 606                                           le32_to_cpu(_val))
 607
 608 static ssize_t iwl_dbgfs_fw_rx_stats_read(struct file *file,
 609                                           char __user *user_buf, size_t count,
 610                                           loff_t *ppos)
 611 {
 612         struct iwl_mvm *mvm = file->private_data;
 613         static const char *fmt_table = "\t%-30s %10u\n";
 614         static const char *fmt_header = "%-32s\n";
 615         int pos = 0;
 616         char *buf;
 617         int ret;
 618         int bufsz = sizeof(struct mvm_statistics_rx_phy) * 20 +
 619                     sizeof(struct mvm_statistics_rx_non_phy) * 10 +
 620                     sizeof(struct mvm_statistics_rx_ht_phy) * 10 + 200;
 621         struct mvm_statistics_rx_phy *ofdm;
 622         struct mvm_statistics_rx_phy *cck;
 623         struct mvm_statistics_rx_non_phy *general;
 624         struct mvm_statistics_rx_ht_phy *ht;
 625
 626         buf = kzalloc(bufsz, GFP_KERNEL);
 627         if (!buf)
 628                 return -ENOMEM;
 629
 630         mutex_lock(&mvm->mutex);
 631
 632         ofdm = &mvm->rx_stats.ofdm;
 633         cck = &mvm->rx_stats.cck;
 634         general = &mvm->rx_stats.general;
 635         ht = &mvm->rx_stats.ofdm_ht;
 636
 637         pos += scnprintf(buf + pos, bufsz - pos, fmt_header,
 638                          "Statistics_Rx - OFDM");
 639         PRINT_STATS_LE32("ina_cnt", ofdm->ina_cnt);
 640         PRINT_STATS_LE32("fina_cnt", ofdm->fina_cnt);
 641         PRINT_STATS_LE32("plcp_err", ofdm->plcp_err);
 642         PRINT_STATS_LE32("crc32_err", ofdm->crc32_err);
 643         PRINT_STATS_LE32("overrun_err", ofdm->overrun_err);
 644         PRINT_STATS_LE32("early_overrun_err", ofdm->early_overrun_err);
 645         PRINT_STATS_LE32("crc32_good", ofdm->crc32_good);
 646         PRINT_STATS_LE32("false_alarm_cnt", ofdm->false_alarm_cnt);
 647         PRINT_STATS_LE32("fina_sync_err_cnt", ofdm->fina_sync_err_cnt);
 648         PRINT_STATS_LE32("sfd_timeout", ofdm->sfd_timeout);
 649         PRINT_STATS_LE32("fina_timeout", ofdm->fina_timeout);
 650         PRINT_STATS_LE32("unresponded_rts", ofdm->unresponded_rts);
 651         PRINT_STATS_LE32("rxe_frame_lmt_overrun",
 652                          ofdm->rxe_frame_limit_overrun);
 653         PRINT_STATS_LE32("sent_ack_cnt", ofdm->sent_ack_cnt);
 654         PRINT_STATS_LE32("sent_cts_cnt", ofdm->sent_cts_cnt);
 655         PRINT_STATS_LE32("sent_ba_rsp_cnt", ofdm->sent_ba_rsp_cnt);
 656         PRINT_STATS_LE32("dsp_self_kill", ofdm->dsp_self_kill);
 657         PRINT_STATS_LE32("mh_format_err", ofdm->mh_format_err);
 658         PRINT_STATS_LE32("re_acq_main_rssi_sum", ofdm->re_acq_main_rssi_sum);
 659         PRINT_STATS_LE32("reserved", ofdm->reserved);
 660
 661         pos += scnprintf(buf + pos, bufsz - pos, fmt_header,
 662                          "Statistics_Rx - CCK");
 663         PRINT_STATS_LE32("ina_cnt", cck->ina_cnt);
 664         PRINT_STATS_LE32("fina_cnt", cck->fina_cnt);
 665         PRINT_STATS_LE32("plcp_err", cck->plcp_err);
 666         PRINT_STATS_LE32("crc32_err", cck->crc32_err);
 667         PRINT_STATS_LE32("overrun_err", cck->overrun_err);
 668         PRINT_STATS_LE32("early_overrun_err", cck->early_overrun_err);
 669         PRINT_STATS_LE32("crc32_good", cck->crc32_good);
 670         PRINT_STATS_LE32("false_alarm_cnt", cck->false_alarm_cnt);
 671         PRINT_STATS_LE32("fina_sync_err_cnt", cck->fina_sync_err_cnt);
 672         PRINT_STATS_LE32("sfd_timeout", cck->sfd_timeout);
 673         PRINT_STATS_LE32("fina_timeout", cck->fina_timeout);
 674         PRINT_STATS_LE32("unresponded_rts", cck->unresponded_rts);
 675         PRINT_STATS_LE32("rxe_frame_lmt_overrun",
 676                          cck->rxe_frame_limit_overrun);
 677         PRINT_STATS_LE32("sent_ack_cnt", cck->sent_ack_cnt);
 678         PRINT_STATS_LE32("sent_cts_cnt", cck->sent_cts_cnt);
 679         PRINT_STATS_LE32("sent_ba_rsp_cnt", cck->sent_ba_rsp_cnt);
 680         PRINT_STATS_LE32("dsp_self_kill", cck->dsp_self_kill);
 681         PRINT_STATS_LE32("mh_format_err", cck->mh_format_err);
 682         PRINT_STATS_LE32("re_acq_main_rssi_sum", cck->re_acq_main_rssi_sum);
 683         PRINT_STATS_LE32("reserved", cck->reserved);
 684
 685         pos += scnprintf(buf + pos, bufsz - pos, fmt_header,
 686                          "Statistics_Rx - GENERAL");
 687         PRINT_STATS_LE32("bogus_cts", general->bogus_cts);
 688         PRINT_STATS_LE32("bogus_ack", general->bogus_ack);
 689         PRINT_STATS_LE32("non_bssid_frames", general->non_bssid_frames);
 690         PRINT_STATS_LE32("filtered_frames", general->filtered_frames);
 691         PRINT_STATS_LE32("non_channel_beacons", general->non_channel_beacons);
 692         PRINT_STATS_LE32("channel_beacons", general->channel_beacons);
 693         PRINT_STATS_LE32("num_missed_bcon", general->num_missed_bcon);
 694         PRINT_STATS_LE32("adc_rx_saturation_time",
 695                          general->adc_rx_saturation_time);
 696         PRINT_STATS_LE32("ina_detection_search_time",
 697                          general->ina_detection_search_time);
 698         PRINT_STATS_LE32("beacon_silence_rssi_a",
 699                          general->beacon_silence_rssi_a);
 700         PRINT_STATS_LE32("beacon_silence_rssi_b",
 701                          general->beacon_silence_rssi_b);
 702         PRINT_STATS_LE32("beacon_silence_rssi_c",
 703                          general->beacon_silence_rssi_c);
 704         PRINT_STATS_LE32("interference_data_flag",
 705                          general->interference_data_flag);
 706         PRINT_STATS_LE32("channel_load", general->channel_load);
 707         PRINT_STATS_LE32("dsp_false_alarms", general->dsp_false_alarms);
 708         PRINT_STATS_LE32("beacon_rssi_a", general->beacon_rssi_a);
 709         PRINT_STATS_LE32("beacon_rssi_b", general->beacon_rssi_b);
 710         PRINT_STATS_LE32("beacon_rssi_c", general->beacon_rssi_c);
 711         PRINT_STATS_LE32("beacon_energy_a", general->beacon_energy_a);
 712         PRINT_STATS_LE32("beacon_energy_b", general->beacon_energy_b);
 713         PRINT_STATS_LE32("beacon_energy_c", general->beacon_energy_c);
 714         PRINT_STATS_LE32("num_bt_kills", general->num_bt_kills);
 715         PRINT_STATS_LE32("directed_data_mpdu", general->directed_data_mpdu);
 716
 717         pos += scnprintf(buf + pos, bufsz - pos, fmt_header,
 718                          "Statistics_Rx - HT");
 719         PRINT_STATS_LE32("plcp_err", ht->plcp_err);
 720         PRINT_STATS_LE32("overrun_err", ht->overrun_err);
 721         PRINT_STATS_LE32("early_overrun_err", ht->early_overrun_err);
 722         PRINT_STATS_LE32("crc32_good", ht->crc32_good);
 723         PRINT_STATS_LE32("crc32_err", ht->crc32_err);
 724         PRINT_STATS_LE32("mh_format_err", ht->mh_format_err);
 725         PRINT_STATS_LE32("agg_crc32_good", ht->agg_crc32_good);
 726         PRINT_STATS_LE32("agg_mpdu_cnt", ht->agg_mpdu_cnt);
 727         PRINT_STATS_LE32("agg_cnt", ht->agg_cnt);
 728         PRINT_STATS_LE32("unsupport_mcs", ht->unsupport_mcs);
 729
 730         mutex_unlock(&mvm->mutex);
 731
 732         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 733         kfree(buf);
 734
 735         return ret;
 736 }
 737 #undef PRINT_STAT_LE32
 738
 739 static ssize_t iwl_dbgfs_fw_restart_write(struct file *file,
 740                                           const char __user *user_buf,
 741                                           size_t count, loff_t *ppos)
 742 {
 743         struct iwl_mvm *mvm = file->private_data;
 744         int ret;
 745
 746         mutex_lock(&mvm->mutex);
 747
 748         /* allow one more restart that we're provoking here */
 749         if (mvm->restart_fw >= 0)
 750                 mvm->restart_fw++;
 751
 752         /* take the return value to make compiler happy - it will fail anyway */
 753         ret = iwl_mvm_send_cmd_pdu(mvm, REPLY_ERROR, CMD_SYNC, 0, NULL);
 754
 755         mutex_unlock(&mvm->mutex);
 756
 757         return count;
 758 }
 759
 760 static ssize_t
 761 iwl_dbgfs_scan_ant_rxchain_read(struct file *file,
 762                                 char __user *user_buf,
 763                                 size_t count, loff_t *ppos)
 764 {
 765         struct iwl_mvm *mvm = file->private_data;
 766         int pos = 0;
 767         char buf[32];
 768         const size_t bufsz = sizeof(buf);
 769
 770         /* print which antennas were set for the scan command by the user */
 771         pos += scnprintf(buf + pos, bufsz - pos, "Antennas for scan: ");
 772         if (mvm->scan_rx_ant & ANT_A)
 773                 pos += scnprintf(buf + pos, bufsz - pos, "A");
 774         if (mvm->scan_rx_ant & ANT_B)
 775                 pos += scnprintf(buf + pos, bufsz - pos, "B");
 776         if (mvm->scan_rx_ant & ANT_C)
 777                 pos += scnprintf(buf + pos, bufsz - pos, "C");
 778         pos += scnprintf(buf + pos, bufsz - pos, " (%hhx)\n", mvm->scan_rx_ant);
 779
 780         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 781 }
 782
 783 static ssize_t
 784 iwl_dbgfs_scan_ant_rxchain_write(struct file *file,
 785                                  const char __user *user_buf,
 786                                  size_t count, loff_t *ppos)
 787 {
 788         struct iwl_mvm *mvm = file->private_data;
 789         char buf[8];
 790         int buf_size;
 791         u8 scan_rx_ant;
 792
 793         memset(buf, 0, sizeof(buf));
 794         buf_size = min(count, sizeof(buf) - 1);
 795
 796         /* get the argument from the user and check if it is valid */
 797         if (copy_from_user(buf, user_buf, buf_size))
 798                 return -EFAULT;
 799         if (sscanf(buf, "%hhx", &scan_rx_ant) != 1)
 800                 return -EINVAL;
 801         if (scan_rx_ant > ANT_ABC)
 802                 return -EINVAL;
 803         if (scan_rx_ant & ~iwl_fw_valid_rx_ant(mvm->fw))
 804                 return -EINVAL;
 805
 806         /* change the rx antennas for scan command */
 807         mvm->scan_rx_ant = scan_rx_ant;
 808
 809         return count;
 810 }
 811
 812
 813 static void iwl_dbgfs_update_bf(struct ieee80211_vif *vif,
 814                                 enum iwl_dbgfs_bf_mask param, int value)
 815 {
 816         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 817         struct iwl_dbgfs_bf *dbgfs_bf = &mvmvif->dbgfs_bf;
 818
 819         dbgfs_bf->mask |= param;
 820
 821         switch (param) {
 822         case MVM_DEBUGFS_BF_ENERGY_DELTA:
 823                 dbgfs_bf->bf_energy_delta = value;
 824                 break;
 825         case MVM_DEBUGFS_BF_ROAMING_ENERGY_DELTA:
 826                 dbgfs_bf->bf_roaming_energy_delta = value;
 827                 break;
 828         case MVM_DEBUGFS_BF_ROAMING_STATE:
 829                 dbgfs_bf->bf_roaming_state = value;
 830                 break;
 831         case MVM_DEBUGFS_BF_TEMP_THRESHOLD:
 832                 dbgfs_bf->bf_temp_threshold = value;
 833                 break;
 834         case MVM_DEBUGFS_BF_TEMP_FAST_FILTER:
 835                 dbgfs_bf->bf_temp_fast_filter = value;
 836                 break;
 837         case MVM_DEBUGFS_BF_TEMP_SLOW_FILTER:
 838                 dbgfs_bf->bf_temp_slow_filter = value;
 839                 break;
 840         case MVM_DEBUGFS_BF_ENABLE_BEACON_FILTER:
 841                 dbgfs_bf->bf_enable_beacon_filter = value;
 842                 break;
 843         case MVM_DEBUGFS_BF_DEBUG_FLAG:
 844                 dbgfs_bf->bf_debug_flag = value;
 845                 break;
 846         case MVM_DEBUGFS_BF_ESCAPE_TIMER:
 847                 dbgfs_bf->bf_escape_timer = value;
 848                 break;
 849         case MVM_DEBUGFS_BA_ENABLE_BEACON_ABORT:
 850                 dbgfs_bf->ba_enable_beacon_abort = value;
 851                 break;
 852         case MVM_DEBUGFS_BA_ESCAPE_TIMER:
 853                 dbgfs_bf->ba_escape_timer = value;
 854                 break;
 855         }
 856 }
 857
 858 static ssize_t iwl_dbgfs_bf_params_write(struct file *file,
 859                                          const char __user *user_buf,
 860                                          size_t count, loff_t *ppos)
 861 {
 862         struct ieee80211_vif *vif = file->private_data;
 863         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 864         struct iwl_mvm *mvm = mvmvif->dbgfs_data;
 865         enum iwl_dbgfs_bf_mask param;
 866         char buf[256];
 867         int buf_size;
 868         int value;
 869         int ret = 0;
 870
 871         memset(buf, 0, sizeof(buf));
 872         buf_size = min(count, sizeof(buf) - 1);
 873         if (copy_from_user(buf, user_buf, buf_size))
 874                 return -EFAULT;
 875
 876         if (!strncmp("bf_energy_delta=", buf, 16)) {
 877                 if (sscanf(buf+16, "%d", &value) != 1)
 878                         return -EINVAL;
 879                 if (value < IWL_BF_ENERGY_DELTA_MIN ||
 880                     value > IWL_BF_ENERGY_DELTA_MAX)
 881                         return -EINVAL;
 882                 param = MVM_DEBUGFS_BF_ENERGY_DELTA;
 883         } else if (!strncmp("bf_roaming_energy_delta=", buf, 24)) {
 884                 if (sscanf(buf+24, "%d", &value) != 1)
 885                         return -EINVAL;
 886                 if (value < IWL_BF_ROAMING_ENERGY_DELTA_MIN ||
 887                     value > IWL_BF_ROAMING_ENERGY_DELTA_MAX)
 888                         return -EINVAL;
 889                 param = MVM_DEBUGFS_BF_ROAMING_ENERGY_DELTA;
 890         } else if (!strncmp("bf_roaming_state=", buf, 17)) {
 891                 if (sscanf(buf+17, "%d", &value) != 1)
 892                         return -EINVAL;
 893                 if (value < IWL_BF_ROAMING_STATE_MIN ||
 894                     value > IWL_BF_ROAMING_STATE_MAX)
 895                         return -EINVAL;
 896                 param = MVM_DEBUGFS_BF_ROAMING_STATE;
 897         } else if (!strncmp("bf_temp_threshold=", buf, 18)) {
 898                 if (sscanf(buf+18, "%d", &value) != 1)
 899                         return -EINVAL;
 900                 if (value < IWL_BF_TEMP_THRESHOLD_MIN ||
 901                     value > IWL_BF_TEMP_THRESHOLD_MAX)
 902                         return -EINVAL;
 903                 param = MVM_DEBUGFS_BF_TEMP_THRESHOLD;
 904         } else if (!strncmp("bf_temp_fast_filter=", buf, 20)) {
 905                 if (sscanf(buf+20, "%d", &value) != 1)
 906                         return -EINVAL;
 907                 if (value < IWL_BF_TEMP_FAST_FILTER_MIN ||
 908                     value > IWL_BF_TEMP_FAST_FILTER_MAX)
 909                         return -EINVAL;
 910                 param = MVM_DEBUGFS_BF_TEMP_FAST_FILTER;
 911         } else if (!strncmp("bf_temp_slow_filter=", buf, 20)) {
 912                 if (sscanf(buf+20, "%d", &value) != 1)
 913                         return -EINVAL;
 914                 if (value < IWL_BF_TEMP_SLOW_FILTER_MIN ||
 915                     value > IWL_BF_TEMP_SLOW_FILTER_MAX)
 916                         return -EINVAL;
 917                 param = MVM_DEBUGFS_BF_TEMP_SLOW_FILTER;
 918         } else if (!strncmp("bf_enable_beacon_filter=", buf, 24)) {
 919                 if (sscanf(buf+24, "%d", &value) != 1)
 920                         return -EINVAL;
 921                 if (value < 0 || value > 1)
 922                         return -EINVAL;
 923                 param = MVM_DEBUGFS_BF_ENABLE_BEACON_FILTER;
 924         } else if (!strncmp("bf_debug_flag=", buf, 14)) {
 925                 if (sscanf(buf+14, "%d", &value) != 1)
 926                         return -EINVAL;
 927                 if (value < 0 || value > 1)
 928                         return -EINVAL;
 929                 param = MVM_DEBUGFS_BF_DEBUG_FLAG;
 930         } else if (!strncmp("bf_escape_timer=", buf, 16)) {
 931                 if (sscanf(buf+16, "%d", &value) != 1)
 932                         return -EINVAL;
 933                 if (value < IWL_BF_ESCAPE_TIMER_MIN ||
 934                     value > IWL_BF_ESCAPE_TIMER_MAX)
 935                         return -EINVAL;
 936                 param = MVM_DEBUGFS_BF_ESCAPE_TIMER;
 937         } else if (!strncmp("ba_escape_timer=", buf, 16)) {
 938                 if (sscanf(buf+16, "%d", &value) != 1)
 939                         return -EINVAL;
 940                 if (value < IWL_BA_ESCAPE_TIMER_MIN ||
 941                     value > IWL_BA_ESCAPE_TIMER_MAX)
 942                         return -EINVAL;
 943                 param = MVM_DEBUGFS_BA_ESCAPE_TIMER;
 944         } else if (!strncmp("ba_enable_beacon_abort=", buf, 23)) {
 945                 if (sscanf(buf+23, "%d", &value) != 1)
 946                         return -EINVAL;
 947                 if (value < 0 || value > 1)
 948                         return -EINVAL;
 949                 param = MVM_DEBUGFS_BA_ENABLE_BEACON_ABORT;
 950         } else {
 951                 return -EINVAL;
 952         }
 953
 954         mutex_lock(&mvm->mutex);
 955         iwl_dbgfs_update_bf(vif, param, value);
 956         if (param == MVM_DEBUGFS_BF_ENABLE_BEACON_FILTER && !value) {
 957                 ret = iwl_mvm_disable_beacon_filter(mvm, vif);
 958         } else {
 959                 ret = iwl_mvm_enable_beacon_filter(mvm, vif);
 960         }
 961         mutex_unlock(&mvm->mutex);
 962
 963         return ret ?: count;
 964 }
 965
 966 static ssize_t iwl_dbgfs_bf_params_read(struct file *file,
 967                                         char __user *user_buf,
 968                                         size_t count, loff_t *ppos)
 969 {
 970         struct ieee80211_vif *vif = file->private_data;
 971         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 972         char buf[256];
 973         int pos = 0;
 974         const size_t bufsz = sizeof(buf);
 975         struct iwl_beacon_filter_cmd cmd = {
 976                 IWL_BF_CMD_CONFIG_DEFAULTS,
 977                 .bf_enable_beacon_filter =
 978                         cpu_to_le32(IWL_BF_ENABLE_BEACON_FILTER_DEFAULT),
 979                 .ba_enable_beacon_abort =
 980                         cpu_to_le32(IWL_BA_ENABLE_BEACON_ABORT_DEFAULT),
 981         };
 982
 983         iwl_mvm_beacon_filter_debugfs_parameters(vif, &cmd);
 984         if (mvmvif->bf_data.bf_enabled)
 985                 cmd.bf_enable_beacon_filter = cpu_to_le32(1);
 986         else
 987                 cmd.bf_enable_beacon_filter = 0;
 988
 989         pos += scnprintf(buf+pos, bufsz-pos, "bf_energy_delta = %d\n",
 990                          le32_to_cpu(cmd.bf_energy_delta));
 991         pos += scnprintf(buf+pos, bufsz-pos, "bf_roaming_energy_delta = %d\n",
 992                          le32_to_cpu(cmd.bf_roaming_energy_delta));
 993         pos += scnprintf(buf+pos, bufsz-pos, "bf_roaming_state = %d\n",
 994                          le32_to_cpu(cmd.bf_roaming_state));
 995         pos += scnprintf(buf+pos, bufsz-pos, "bf_temp_threshold = %d\n",
 996                          le32_to_cpu(cmd.bf_temp_threshold));
 997         pos += scnprintf(buf+pos, bufsz-pos, "bf_temp_fast_filter = %d\n",
 998                          le32_to_cpu(cmd.bf_temp_fast_filter));
 999         pos += scnprintf(buf+pos, bufsz-pos, "bf_temp_slow_filter = %d\n",
1000                          le32_to_cpu(cmd.bf_temp_slow_filter));
1001         pos += scnprintf(buf+pos, bufsz-pos, "bf_enable_beacon_filter = %d\n",
1002                          le32_to_cpu(cmd.bf_enable_beacon_filter));
1003         pos += scnprintf(buf+pos, bufsz-pos, "bf_debug_flag = %d\n",
1004                          le32_to_cpu(cmd.bf_debug_flag));
1005         pos += scnprintf(buf+pos, bufsz-pos, "bf_escape_timer = %d\n",
1006                          le32_to_cpu(cmd.bf_escape_timer));
1007         pos += scnprintf(buf+pos, bufsz-pos, "ba_escape_timer = %d\n",
1008                          le32_to_cpu(cmd.ba_escape_timer));
1009         pos += scnprintf(buf+pos, bufsz-pos, "ba_enable_beacon_abort = %d\n",
1010                          le32_to_cpu(cmd.ba_enable_beacon_abort));
1011
1012         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
1013 }
1014
1015 #ifdef CONFIG_PM_SLEEP
1016 static ssize_t iwl_dbgfs_d3_sram_write(struct file *file,
1017                                        const char __user *user_buf,
1018                                        size_t count, loff_t *ppos)
1019 {
1020         struct iwl_mvm *mvm = file->private_data;
1021         char buf[8] = {};
1022         int store;
1023
1024         if (copy_from_user(buf, user_buf, sizeof(buf)))
1025                 return -EFAULT;
1026
1027         if (sscanf(buf, "%d", &store) != 1)
1028                 return -EINVAL;
1029
1030         mvm->store_d3_resume_sram = store;
1031
1032         return count;
1033 }
1034
1035 static ssize_t iwl_dbgfs_d3_sram_read(struct file *file, char __user *user_buf,
1036                                       size_t count, loff_t *ppos)
1037 {
1038         struct iwl_mvm *mvm = file->private_data;
1039         const struct fw_img *img;
1040         int ofs, len, pos = 0;
1041         size_t bufsz, ret;
1042         char *buf;
1043         u8 *ptr = mvm->d3_resume_sram;
1044
1045         img = &mvm->fw->img[IWL_UCODE_WOWLAN];
1046         len = img->sec[IWL_UCODE_SECTION_DATA].len;
1047
1048         bufsz = len * 4 + 256;
1049         buf = kzalloc(bufsz, GFP_KERNEL);
1050         if (!buf)
1051                 return -ENOMEM;
1052
1053         pos += scnprintf(buf, bufsz, "D3 SRAM capture: %sabled\n",
1054                          mvm->store_d3_resume_sram ? "en" : "dis");
1055
1056         if (ptr) {
1057                 for (ofs = 0; ofs < len; ofs += 16) {
1058                         pos += scnprintf(buf + pos, bufsz - pos,
1059                                          "0x%.4x ", ofs);
1060                         hex_dump_to_buffer(ptr + ofs, 16, 16, 1, buf + pos,
1061                                            bufsz - pos, false);
1062                         pos += strlen(buf + pos);
1063                         if (bufsz - pos > 0)
1064                                 buf[pos++] = '\n';
1065                 }
1066         } else {
1067                 pos += scnprintf(buf + pos, bufsz - pos,
1068                                  "(no data captured)\n");
1069         }
1070
1071         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
1072
1073         kfree(buf);
1074
1075         return ret;
1076 }
1077 #endif
1078
1079 #define MVM_DEBUGFS_READ_FILE_OPS(name)                                 \
1080 static const struct file_operations iwl_dbgfs_##name##_ops = {  \
1081         .read = iwl_dbgfs_##name##_read,                                \
1082         .open = simple_open,                                            \
1083         .llseek = generic_file_llseek,                                  \
1084 }
1085
1086 #define MVM_DEBUGFS_READ_WRITE_FILE_OPS(name)                           \
1087 static const struct file_operations iwl_dbgfs_##name##_ops = {  \
1088         .write = iwl_dbgfs_##name##_write,                              \
1089         .read = iwl_dbgfs_##name##_read,                                \
1090         .open = simple_open,                                            \
1091         .llseek = generic_file_llseek,                                  \
1092 };
1093
1094 #define MVM_DEBUGFS_WRITE_FILE_OPS(name)                                \
1095 static const struct file_operations iwl_dbgfs_##name##_ops = {  \
1096         .write = iwl_dbgfs_##name##_write,                              \
1097         .open = simple_open,                                            \
1098         .llseek = generic_file_llseek,                                  \
1099 };
1100
1101 #define MVM_DEBUGFS_ADD_FILE(name, parent, mode) do {                   \
1102                 if (!debugfs_create_file(#name, mode, parent, mvm,      \
1103                                          &iwl_dbgfs_##name##_ops))      \
1104                         goto err;                                       \
1105         } while (0)
1106
1107 #define MVM_DEBUGFS_ADD_FILE_VIF(name, parent, mode) do {               \
1108                 if (!debugfs_create_file(#name, mode, parent, vif,      \
1109                                          &iwl_dbgfs_##name##_ops))      \
1110                         goto err;                                       \
1111         } while (0)
1112
1113 /* Device wide debugfs entries */
1114 MVM_DEBUGFS_WRITE_FILE_OPS(tx_flush);
1115 MVM_DEBUGFS_WRITE_FILE_OPS(sta_drain);
1116 MVM_DEBUGFS_READ_WRITE_FILE_OPS(sram);
1117 MVM_DEBUGFS_READ_FILE_OPS(stations);
1118 MVM_DEBUGFS_READ_FILE_OPS(bt_notif);
1119 MVM_DEBUGFS_WRITE_FILE_OPS(power_down_allow);
1120 MVM_DEBUGFS_WRITE_FILE_OPS(power_down_d3_allow);
1121 MVM_DEBUGFS_READ_FILE_OPS(fw_rx_stats);
1122 MVM_DEBUGFS_WRITE_FILE_OPS(fw_restart);
1123 MVM_DEBUGFS_READ_WRITE_FILE_OPS(scan_ant_rxchain);
1124
1125 #ifdef CONFIG_PM_SLEEP
1126 MVM_DEBUGFS_READ_WRITE_FILE_OPS(d3_sram);
1127 #endif
1128
1129 /* Interface specific debugfs entries */
1130 MVM_DEBUGFS_READ_FILE_OPS(mac_params);
1131 MVM_DEBUGFS_READ_WRITE_FILE_OPS(pm_params);
1132 MVM_DEBUGFS_READ_WRITE_FILE_OPS(bf_params);
1133
1134 int iwl_mvm_dbgfs_register(struct iwl_mvm *mvm, struct dentry *dbgfs_dir)
1135 {
1136         char buf[100];
1137
1138         mvm->debugfs_dir = dbgfs_dir;
1139
1140         MVM_DEBUGFS_ADD_FILE(tx_flush, mvm->debugfs_dir, S_IWUSR);
1141         MVM_DEBUGFS_ADD_FILE(sta_drain, mvm->debugfs_dir, S_IWUSR);
1142         MVM_DEBUGFS_ADD_FILE(sram, mvm->debugfs_dir, S_IWUSR | S_IRUSR);
1143         MVM_DEBUGFS_ADD_FILE(stations, dbgfs_dir, S_IRUSR);
1144         MVM_DEBUGFS_ADD_FILE(bt_notif, dbgfs_dir, S_IRUSR);
1145         MVM_DEBUGFS_ADD_FILE(power_down_allow, mvm->debugfs_dir, S_IWUSR);
1146         MVM_DEBUGFS_ADD_FILE(power_down_d3_allow, mvm->debugfs_dir, S_IWUSR);
1147         MVM_DEBUGFS_ADD_FILE(fw_rx_stats, mvm->debugfs_dir, S_IRUSR);
1148         MVM_DEBUGFS_ADD_FILE(fw_restart, mvm->debugfs_dir, S_IWUSR);
1149         MVM_DEBUGFS_ADD_FILE(scan_ant_rxchain, mvm->debugfs_dir,
1150                              S_IWUSR | S_IRUSR);
1151 #ifdef CONFIG_PM_SLEEP
1152         MVM_DEBUGFS_ADD_FILE(d3_sram, mvm->debugfs_dir, S_IRUSR | S_IWUSR);
1153         MVM_DEBUGFS_ADD_FILE(d3_test, mvm->debugfs_dir, S_IRUSR);
1154         if (!debugfs_create_bool("d3_wake_sysassert", S_IRUSR | S_IWUSR,
1155                                  mvm->debugfs_dir, &mvm->d3_wake_sysassert))
1156                 goto err;
1157 #endif
1158
1159         /*
1160          * Create a symlink with mac80211. It will be removed when mac80211
1161          * exists (before the opmode exists which removes the target.)
1162          */
1163         snprintf(buf, 100, "../../%s/%s",
1164                  dbgfs_dir->d_parent->d_parent->d_name.name,
1165                  dbgfs_dir->d_parent->d_name.name);
1166         if (!debugfs_create_symlink("iwlwifi", mvm->hw->wiphy->debugfsdir, buf))
1167                 goto err;
1168
1169         return 0;
1170 err:
1171         IWL_ERR(mvm, "Can't create the mvm debugfs directory\n");
1172         return -ENOMEM;
1173 }
1174
1175 void iwl_mvm_vif_dbgfs_register(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1176 {
1177         struct dentry *dbgfs_dir = vif->debugfs_dir;
1178         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1179         char buf[100];
1180
1181         /*
1182          * Check if debugfs directory already exist before creating it.
1183          * This may happen when, for example, resetting hw or suspend-resume
1184          */
1185         if (!dbgfs_dir || mvmvif->dbgfs_dir)
1186                 return;
1187
1188         mvmvif->dbgfs_dir = debugfs_create_dir("iwlmvm", dbgfs_dir);
1189         mvmvif->dbgfs_data = mvm;
1190
1191         if (!mvmvif->dbgfs_dir) {
1192                 IWL_ERR(mvm, "Failed to create debugfs directory under %s\n",
1193                         dbgfs_dir->d_name.name);
1194                 return;
1195         }
1196
1197         if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM &&
1198             vif->type == NL80211_IFTYPE_STATION && !vif->p2p)
1199                 MVM_DEBUGFS_ADD_FILE_VIF(pm_params, mvmvif->dbgfs_dir, S_IWUSR |
1200                                          S_IRUSR);
1201
1202         MVM_DEBUGFS_ADD_FILE_VIF(mac_params, mvmvif->dbgfs_dir,
1203                                  S_IRUSR);
1204
1205         if (vif->type == NL80211_IFTYPE_STATION && !vif->p2p &&
1206             mvmvif == mvm->bf_allowed_vif)
1207                 MVM_DEBUGFS_ADD_FILE_VIF(bf_params, mvmvif->dbgfs_dir,
1208                                          S_IRUSR | S_IWUSR);
1209
1210         /*
1211          * Create symlink for convenience pointing to interface specific
1212          * debugfs entries for the driver. For example, under
1213          * /sys/kernel/debug/iwlwifi/0000\:02\:00.0/iwlmvm/
1214          * find
1215          * netdev:wlan0 -> ../../../ieee80211/phy0/netdev:wlan0/iwlmvm/
1216          */
1217         snprintf(buf, 100, "../../../%s/%s/%s/%s",
1218                  dbgfs_dir->d_parent->d_parent->d_name.name,
1219                  dbgfs_dir->d_parent->d_name.name,
1220                  dbgfs_dir->d_name.name,
1221                  mvmvif->dbgfs_dir->d_name.name);
1222
1223         mvmvif->dbgfs_slink = debugfs_create_symlink(dbgfs_dir->d_name.name,
1224                                                      mvm->debugfs_dir, buf);
1225         if (!mvmvif->dbgfs_slink)
1226                 IWL_ERR(mvm, "Can't create debugfs symbolic link under %s\n",
1227                         dbgfs_dir->d_name.name);
1228         return;
1229 err:
1230         IWL_ERR(mvm, "Can't create debugfs entity\n");
1231 }
1232
1233 void iwl_mvm_vif_dbgfs_clean(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1234 {
1235         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1236
1237         debugfs_remove(mvmvif->dbgfs_slink);
1238         mvmvif->dbgfs_slink = NULL;
1239
1240         debugfs_remove_recursive(mvmvif->dbgfs_dir);
1241         mvmvif->dbgfs_dir = NULL;
1242 }