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.
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  20  * along with this program; if not, write to the Free Software
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  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
  38  * are met:
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  40  *  * Redistributions of source code must retain the above copyright
  41  *    notice, this list of conditions and the following disclaimer.
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  43  *    notice, this list of conditions and the following disclaimer in
  44  *    the documentation and/or other materials provided with the
  45  *    distribution.
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  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 struct iwl_dbgfs_mvm_ctx {
  69         struct iwl_mvm *mvm;
  70         struct ieee80211_vif *vif;
  71 };
  72
  73 static ssize_t iwl_dbgfs_tx_flush_write(struct file *file,
  74                                         const char __user *user_buf,
  75                                         size_t count, loff_t *ppos)
  76 {
  77         struct iwl_mvm *mvm = file->private_data;
  78
  79         char buf[16];
  80         int buf_size, ret;
  81         u32 scd_q_msk;
  82
  83         if (!mvm->ucode_loaded || mvm->cur_ucode != IWL_UCODE_REGULAR)
  84                 return -EIO;
  85
  86         memset(buf, 0, sizeof(buf));
  87         buf_size = min(count, sizeof(buf) - 1);
  88         if (copy_from_user(buf, user_buf, buf_size))
  89                 return -EFAULT;
  90
  91         if (sscanf(buf, "%x", &scd_q_msk) != 1)
  92                 return -EINVAL;
  93
  94         IWL_ERR(mvm, "FLUSHING queues: scd_q_msk = 0x%x\n", scd_q_msk);
  95
  96         mutex_lock(&mvm->mutex);
  97         ret =  iwl_mvm_flush_tx_path(mvm, scd_q_msk, true) ? : count;
  98         mutex_unlock(&mvm->mutex);
  99
 100         return ret;
 101 }
 102
 103 static ssize_t iwl_dbgfs_sta_drain_write(struct file *file,
 104                                          const char __user *user_buf,
 105                                          size_t count, loff_t *ppos)
 106 {
 107         struct iwl_mvm *mvm = file->private_data;
 108         struct ieee80211_sta *sta;
 109
 110         char buf[8];
 111         int buf_size, sta_id, drain, ret;
 112
 113         if (!mvm->ucode_loaded || mvm->cur_ucode != IWL_UCODE_REGULAR)
 114                 return -EIO;
 115
 116         memset(buf, 0, sizeof(buf));
 117         buf_size = min(count, sizeof(buf) - 1);
 118         if (copy_from_user(buf, user_buf, buf_size))
 119                 return -EFAULT;
 120
 121         if (sscanf(buf, "%d %d", &sta_id, &drain) != 2)
 122                 return -EINVAL;
 123         if (sta_id < 0 || sta_id >= IWL_MVM_STATION_COUNT)
 124                 return -EINVAL;
 125         if (drain < 0 || drain > 1)
 126                 return -EINVAL;
 127
 128         mutex_lock(&mvm->mutex);
 129
 130         sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
 131                                         lockdep_is_held(&mvm->mutex));
 132         if (IS_ERR_OR_NULL(sta))
 133                 ret = -ENOENT;
 134         else
 135                 ret = iwl_mvm_drain_sta(mvm, (void *)sta->drv_priv, drain) ? :
 136                         count;
 137
 138         mutex_unlock(&mvm->mutex);
 139
 140         return ret;
 141 }
 142
 143 static ssize_t iwl_dbgfs_sram_read(struct file *file, char __user *user_buf,
 144                                    size_t count, loff_t *ppos)
 145 {
 146         struct iwl_mvm *mvm = file->private_data;
 147         const struct fw_img *img;
 148         int ofs, len, pos = 0;
 149         size_t bufsz, ret;
 150         char *buf;
 151         u8 *ptr;
 152
 153         if (!mvm->ucode_loaded)
 154                 return -EINVAL;
 155
 156         /* default is to dump the entire data segment */
 157         if (!mvm->dbgfs_sram_offset && !mvm->dbgfs_sram_len) {
 158                 img = &mvm->fw->img[mvm->cur_ucode];
 159                 ofs = img->sec[IWL_UCODE_SECTION_DATA].offset;
 160                 len = img->sec[IWL_UCODE_SECTION_DATA].len;
 161         } else {
 162                 ofs = mvm->dbgfs_sram_offset;
 163                 len = mvm->dbgfs_sram_len;
 164         }
 165
 166         bufsz = len * 4 + 256;
 167         buf = kzalloc(bufsz, GFP_KERNEL);
 168         if (!buf)
 169                 return -ENOMEM;
 170
 171         ptr = kzalloc(len, GFP_KERNEL);
 172         if (!ptr) {
 173                 kfree(buf);
 174                 return -ENOMEM;
 175         }
 176
 177         pos += scnprintf(buf + pos, bufsz - pos, "sram_len: 0x%x\n", len);
 178         pos += scnprintf(buf + pos, bufsz - pos, "sram_offset: 0x%x\n", ofs);
 179
 180         iwl_trans_read_mem_bytes(mvm->trans, ofs, ptr, len);
 181         for (ofs = 0; ofs < len; ofs += 16) {
 182                 pos += scnprintf(buf + pos, bufsz - pos, "0x%.4x ", ofs);
 183                 hex_dump_to_buffer(ptr + ofs, 16, 16, 1, buf + pos,
 184                                    bufsz - pos, false);
 185                 pos += strlen(buf + pos);
 186                 if (bufsz - pos > 0)
 187                         buf[pos++] = '\n';
 188         }
 189
 190         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 191
 192         kfree(buf);
 193         kfree(ptr);
 194
 195         return ret;
 196 }
 197
 198 static ssize_t iwl_dbgfs_sram_write(struct file *file,
 199                                     const char __user *user_buf, size_t count,
 200                                     loff_t *ppos)
 201 {
 202         struct iwl_mvm *mvm = file->private_data;
 203         char buf[64];
 204         int buf_size;
 205         u32 offset, len;
 206
 207         memset(buf, 0, sizeof(buf));
 208         buf_size = min(count, sizeof(buf) -  1);
 209         if (copy_from_user(buf, user_buf, buf_size))
 210                 return -EFAULT;
 211
 212         if (sscanf(buf, "%x,%x", &offset, &len) == 2) {
 213                 if ((offset & 0x3) || (len & 0x3))
 214                         return -EINVAL;
 215                 mvm->dbgfs_sram_offset = offset;
 216                 mvm->dbgfs_sram_len = len;
 217         } else {
 218                 mvm->dbgfs_sram_offset = 0;
 219                 mvm->dbgfs_sram_len = 0;
 220         }
 221
 222         return count;
 223 }
 224
 225 static ssize_t iwl_dbgfs_stations_read(struct file *file, char __user *user_buf,
 226                                        size_t count, loff_t *ppos)
 227 {
 228         struct iwl_mvm *mvm = file->private_data;
 229         struct ieee80211_sta *sta;
 230         char buf[400];
 231         int i, pos = 0, bufsz = sizeof(buf);
 232
 233         mutex_lock(&mvm->mutex);
 234
 235         for (i = 0; i < IWL_MVM_STATION_COUNT; i++) {
 236                 pos += scnprintf(buf + pos, bufsz - pos, "%.2d: ", i);
 237                 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
 238                                                 lockdep_is_held(&mvm->mutex));
 239                 if (!sta)
 240                         pos += scnprintf(buf + pos, bufsz - pos, "N/A\n");
 241                 else if (IS_ERR(sta))
 242                         pos += scnprintf(buf + pos, bufsz - pos, "%ld\n",
 243                                          PTR_ERR(sta));
 244                 else
 245                         pos += scnprintf(buf + pos, bufsz - pos, "%pM\n",
 246                                          sta->addr);
 247         }
 248
 249         mutex_unlock(&mvm->mutex);
 250
 251         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 252 }
 253
 254 static ssize_t iwl_dbgfs_disable_power_off_read(struct file *file,
 255                                                 char __user *user_buf,
 256                                                 size_t count, loff_t *ppos)
 257 {
 258         struct iwl_mvm *mvm = file->private_data;
 259         char buf[64];
 260         int bufsz = sizeof(buf);
 261         int pos = 0;
 262
 263         pos += scnprintf(buf+pos, bufsz-pos, "disable_power_off_d0=%d\n",
 264                          mvm->disable_power_off);
 265         pos += scnprintf(buf+pos, bufsz-pos, "disable_power_off_d3=%d\n",
 266                          mvm->disable_power_off_d3);
 267
 268         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 269 }
 270
 271 static ssize_t iwl_dbgfs_disable_power_off_write(struct file *file,
 272                                                  const char __user *user_buf,
 273                                                  size_t count, loff_t *ppos)
 274 {
 275         struct iwl_mvm *mvm = file->private_data;
 276         char buf[64] = {};
 277         int ret;
 278         int val;
 279
 280         if (!mvm->ucode_loaded)
 281                 return -EIO;
 282
 283         count = min_t(size_t, count, sizeof(buf) - 1);
 284         if (copy_from_user(buf, user_buf, count))
 285                 return -EFAULT;
 286
 287         if (!strncmp("disable_power_off_d0=", buf, 21)) {
 288                 if (sscanf(buf + 21, "%d", &val) != 1)
 289                         return -EINVAL;
 290                 mvm->disable_power_off = val;
 291         } else if (!strncmp("disable_power_off_d3=", buf, 21)) {
 292                 if (sscanf(buf + 21, "%d", &val) != 1)
 293                         return -EINVAL;
 294                 mvm->disable_power_off_d3 = val;
 295         } else {
 296                 return -EINVAL;
 297         }
 298
 299         mutex_lock(&mvm->mutex);
 300         ret = iwl_mvm_power_update_device_mode(mvm);
 301         mutex_unlock(&mvm->mutex);
 302
 303         return ret ?: count;
 304 }
 305
 306 static void iwl_dbgfs_update_pm(struct iwl_mvm *mvm,
 307                                  struct ieee80211_vif *vif,
 308                                  enum iwl_dbgfs_pm_mask param, int val)
 309 {
 310         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 311         struct iwl_dbgfs_pm *dbgfs_pm = &mvmvif->dbgfs_pm;
 312
 313         dbgfs_pm->mask |= param;
 314
 315         switch (param) {
 316         case MVM_DEBUGFS_PM_KEEP_ALIVE: {
 317                 struct ieee80211_hw *hw = mvm->hw;
 318                 int dtimper = hw->conf.ps_dtim_period ?: 1;
 319                 int dtimper_msec = dtimper * vif->bss_conf.beacon_int;
 320
 321                 IWL_DEBUG_POWER(mvm, "debugfs: set keep_alive= %d sec\n", val);
 322                 if (val * MSEC_PER_SEC < 3 * dtimper_msec) {
 323                         IWL_WARN(mvm,
 324                                  "debugfs: keep alive period (%ld msec) is less than minimum required (%d msec)\n",
 325                                  val * MSEC_PER_SEC, 3 * dtimper_msec);
 326                 }
 327                 dbgfs_pm->keep_alive_seconds = val;
 328                 break;
 329         }
 330         case MVM_DEBUGFS_PM_SKIP_OVER_DTIM:
 331                 IWL_DEBUG_POWER(mvm, "skip_over_dtim %s\n",
 332                                 val ? "enabled" : "disabled");
 333                 dbgfs_pm->skip_over_dtim = val;
 334                 break;
 335         case MVM_DEBUGFS_PM_SKIP_DTIM_PERIODS:
 336                 IWL_DEBUG_POWER(mvm, "skip_dtim_periods=%d\n", val);
 337                 dbgfs_pm->skip_dtim_periods = val;
 338                 break;
 339         case MVM_DEBUGFS_PM_RX_DATA_TIMEOUT:
 340                 IWL_DEBUG_POWER(mvm, "rx_data_timeout=%d\n", val);
 341                 dbgfs_pm->rx_data_timeout = val;
 342                 break;
 343         case MVM_DEBUGFS_PM_TX_DATA_TIMEOUT:
 344                 IWL_DEBUG_POWER(mvm, "tx_data_timeout=%d\n", val);
 345                 dbgfs_pm->tx_data_timeout = val;
 346                 break;
 347         case MVM_DEBUGFS_PM_DISABLE_POWER_OFF:
 348                 IWL_DEBUG_POWER(mvm, "disable_power_off=%d\n", val);
 349                 dbgfs_pm->disable_power_off = val;
 350                 break;
 351         case MVM_DEBUGFS_PM_LPRX_ENA:
 352                 IWL_DEBUG_POWER(mvm, "lprx %s\n", val ? "enabled" : "disabled");
 353                 dbgfs_pm->lprx_ena = val;
 354                 break;
 355         case MVM_DEBUGFS_PM_LPRX_RSSI_THRESHOLD:
 356                 IWL_DEBUG_POWER(mvm, "lprx_rssi_threshold=%d\n", val);
 357                 dbgfs_pm->lprx_rssi_threshold = val;
 358                 break;
 359         case MVM_DEBUGFS_PM_SNOOZE_ENABLE:
 360                 IWL_DEBUG_POWER(mvm, "snooze_enable=%d\n", val);
 361                 dbgfs_pm->snooze_ena = val;
 362                 break;
 363         }
 364 }
 365
 366 static ssize_t iwl_dbgfs_pm_params_write(struct file *file,
 367                                          const char __user *user_buf,
 368                                          size_t count, loff_t *ppos)
 369 {
 370         struct ieee80211_vif *vif = file->private_data;
 371         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 372         struct iwl_mvm *mvm = mvmvif->dbgfs_data;
 373         enum iwl_dbgfs_pm_mask param;
 374         char buf[32] = {};
 375         int val;
 376         int ret;
 377
 378         count = min_t(size_t, count, sizeof(buf) - 1);
 379         if (copy_from_user(buf, user_buf, count))
 380                 return -EFAULT;
 381
 382         if (!strncmp("keep_alive=", buf, 11)) {
 383                 if (sscanf(buf + 11, "%d", &val) != 1)
 384                         return -EINVAL;
 385                 param = MVM_DEBUGFS_PM_KEEP_ALIVE;
 386         } else if (!strncmp("skip_over_dtim=", buf, 15)) {
 387                 if (sscanf(buf + 15, "%d", &val) != 1)
 388                         return -EINVAL;
 389                 param = MVM_DEBUGFS_PM_SKIP_OVER_DTIM;
 390         } else if (!strncmp("skip_dtim_periods=", buf, 18)) {
 391                 if (sscanf(buf + 18, "%d", &val) != 1)
 392                         return -EINVAL;
 393                 param = MVM_DEBUGFS_PM_SKIP_DTIM_PERIODS;
 394         } else if (!strncmp("rx_data_timeout=", buf, 16)) {
 395                 if (sscanf(buf + 16, "%d", &val) != 1)
 396                         return -EINVAL;
 397                 param = MVM_DEBUGFS_PM_RX_DATA_TIMEOUT;
 398         } else if (!strncmp("tx_data_timeout=", buf, 16)) {
 399                 if (sscanf(buf + 16, "%d", &val) != 1)
 400                         return -EINVAL;
 401                 param = MVM_DEBUGFS_PM_TX_DATA_TIMEOUT;
 402         } else if (!strncmp("disable_power_off=", buf, 18) &&
 403                    !(mvm->fw->ucode_capa.flags &
 404                      IWL_UCODE_TLV_FLAGS_DEVICE_PS_CMD)) {
 405                 if (sscanf(buf + 18, "%d", &val) != 1)
 406                         return -EINVAL;
 407                 param = MVM_DEBUGFS_PM_DISABLE_POWER_OFF;
 408         } else if (!strncmp("lprx=", buf, 5)) {
 409                 if (sscanf(buf + 5, "%d", &val) != 1)
 410                         return -EINVAL;
 411                 param = MVM_DEBUGFS_PM_LPRX_ENA;
 412         } else if (!strncmp("lprx_rssi_threshold=", buf, 20)) {
 413                 if (sscanf(buf + 20, "%d", &val) != 1)
 414                         return -EINVAL;
 415                 if (val > POWER_LPRX_RSSI_THRESHOLD_MAX || val <
 416                     POWER_LPRX_RSSI_THRESHOLD_MIN)
 417                         return -EINVAL;
 418                 param = MVM_DEBUGFS_PM_LPRX_RSSI_THRESHOLD;
 419         } else if (!strncmp("snooze_enable=", buf, 14)) {
 420                 if (sscanf(buf + 14, "%d", &val) != 1)
 421                         return -EINVAL;
 422                 param = MVM_DEBUGFS_PM_SNOOZE_ENABLE;
 423         } else {
 424                 return -EINVAL;
 425         }
 426
 427         mutex_lock(&mvm->mutex);
 428         iwl_dbgfs_update_pm(mvm, vif, param, val);
 429         ret = iwl_mvm_power_update_mode(mvm, vif);
 430         mutex_unlock(&mvm->mutex);
 431
 432         return ret ?: count;
 433 }
 434
 435 static ssize_t iwl_dbgfs_pm_params_read(struct file *file,
 436                                         char __user *user_buf,
 437                                         size_t count, loff_t *ppos)
 438 {
 439         struct ieee80211_vif *vif = file->private_data;
 440         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 441         struct iwl_mvm *mvm = mvmvif->dbgfs_data;
 442         char buf[512];
 443         int bufsz = sizeof(buf);
 444         int pos;
 445
 446         pos = iwl_mvm_power_dbgfs_read(mvm, vif, buf, bufsz);
 447
 448         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 449 }
 450
 451 static ssize_t iwl_dbgfs_mac_params_read(struct file *file,
 452                                          char __user *user_buf,
 453                                          size_t count, loff_t *ppos)
 454 {
 455         struct ieee80211_vif *vif = file->private_data;
 456         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 457         struct iwl_mvm *mvm = mvmvif->dbgfs_data;
 458         u8 ap_sta_id;
 459         struct ieee80211_chanctx_conf *chanctx_conf;
 460         char buf[512];
 461         int bufsz = sizeof(buf);
 462         int pos = 0;
 463         int i;
 464
 465         mutex_lock(&mvm->mutex);
 466
 467         ap_sta_id = mvmvif->ap_sta_id;
 468
 469         pos += scnprintf(buf+pos, bufsz-pos, "mac id/color: %d / %d\n",
 470                          mvmvif->id, mvmvif->color);
 471         pos += scnprintf(buf+pos, bufsz-pos, "bssid: %pM\n",
 472                          vif->bss_conf.bssid);
 473         pos += scnprintf(buf+pos, bufsz-pos, "QoS:\n");
 474         for (i = 0; i < ARRAY_SIZE(mvmvif->queue_params); i++) {
 475                 pos += scnprintf(buf+pos, bufsz-pos,
 476                                  "\t%d: txop:%d - cw_min:%d - cw_max = %d - aifs = %d upasd = %d\n",
 477                                  i, mvmvif->queue_params[i].txop,
 478                                  mvmvif->queue_params[i].cw_min,
 479                                  mvmvif->queue_params[i].cw_max,
 480                                  mvmvif->queue_params[i].aifs,
 481                                  mvmvif->queue_params[i].uapsd);
 482         }
 483
 484         if (vif->type == NL80211_IFTYPE_STATION &&
 485             ap_sta_id != IWL_MVM_STATION_COUNT) {
 486                 struct ieee80211_sta *sta;
 487                 struct iwl_mvm_sta *mvm_sta;
 488
 489                 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[ap_sta_id],
 490                                                 lockdep_is_held(&mvm->mutex));
 491                 mvm_sta = (void *)sta->drv_priv;
 492                 pos += scnprintf(buf+pos, bufsz-pos,
 493                                  "ap_sta_id %d - reduced Tx power %d\n",
 494                                  ap_sta_id, mvm_sta->bt_reduced_txpower);
 495         }
 496
 497         rcu_read_lock();
 498         chanctx_conf = rcu_dereference(vif->chanctx_conf);
 499         if (chanctx_conf) {
 500                 pos += scnprintf(buf+pos, bufsz-pos,
 501                                  "idle rx chains %d, active rx chains: %d\n",
 502                                  chanctx_conf->rx_chains_static,
 503                                  chanctx_conf->rx_chains_dynamic);
 504         }
 505         rcu_read_unlock();
 506
 507         mutex_unlock(&mvm->mutex);
 508
 509         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 510 }
 511
 512 #define BT_MBOX_MSG(_notif, _num, _field)                                    \
 513         ((le32_to_cpu((_notif)->mbox_msg[(_num)]) & BT_MBOX##_num##_##_field)\
 514         >> BT_MBOX##_num##_##_field##_POS)
 515
 516
 517 #define BT_MBOX_PRINT(_num, _field, _end)                                   \
 518                         pos += scnprintf(buf + pos, bufsz - pos,            \
 519                                          "\t%s: %d%s",                      \
 520                                          #_field,                           \
 521                                          BT_MBOX_MSG(notif, _num, _field),  \
 522                                          true ? "\n" : ", ");
 523
 524 static ssize_t iwl_dbgfs_bt_notif_read(struct file *file, char __user *user_buf,
 525                                        size_t count, loff_t *ppos)
 526 {
 527         struct iwl_mvm *mvm = file->private_data;
 528         struct iwl_bt_coex_profile_notif *notif = &mvm->last_bt_notif;
 529         char *buf;
 530         int ret, pos = 0, bufsz = sizeof(char) * 1024;
 531
 532         buf = kmalloc(bufsz, GFP_KERNEL);
 533         if (!buf)
 534                 return -ENOMEM;
 535
 536         mutex_lock(&mvm->mutex);
 537
 538         pos += scnprintf(buf+pos, bufsz-pos, "MBOX dw0:\n");
 539
 540         BT_MBOX_PRINT(0, LE_SLAVE_LAT, false);
 541         BT_MBOX_PRINT(0, LE_PROF1, false);
 542         BT_MBOX_PRINT(0, LE_PROF2, false);
 543         BT_MBOX_PRINT(0, LE_PROF_OTHER, false);
 544         BT_MBOX_PRINT(0, CHL_SEQ_N, false);
 545         BT_MBOX_PRINT(0, INBAND_S, false);
 546         BT_MBOX_PRINT(0, LE_MIN_RSSI, false);
 547         BT_MBOX_PRINT(0, LE_SCAN, false);
 548         BT_MBOX_PRINT(0, LE_ADV, false);
 549         BT_MBOX_PRINT(0, LE_MAX_TX_POWER, false);
 550         BT_MBOX_PRINT(0, OPEN_CON_1, true);
 551
 552         pos += scnprintf(buf+pos, bufsz-pos, "MBOX dw1:\n");
 553
 554         BT_MBOX_PRINT(1, BR_MAX_TX_POWER, false);
 555         BT_MBOX_PRINT(1, IP_SR, false);
 556         BT_MBOX_PRINT(1, LE_MSTR, false);
 557         BT_MBOX_PRINT(1, AGGR_TRFC_LD, false);
 558         BT_MBOX_PRINT(1, MSG_TYPE, false);
 559         BT_MBOX_PRINT(1, SSN, true);
 560
 561         pos += scnprintf(buf+pos, bufsz-pos, "MBOX dw2:\n");
 562
 563         BT_MBOX_PRINT(2, SNIFF_ACT, false);
 564         BT_MBOX_PRINT(2, PAG, false);
 565         BT_MBOX_PRINT(2, INQUIRY, false);
 566         BT_MBOX_PRINT(2, CONN, false);
 567         BT_MBOX_PRINT(2, SNIFF_INTERVAL, false);
 568         BT_MBOX_PRINT(2, DISC, false);
 569         BT_MBOX_PRINT(2, SCO_TX_ACT, false);
 570         BT_MBOX_PRINT(2, SCO_RX_ACT, false);
 571         BT_MBOX_PRINT(2, ESCO_RE_TX, false);
 572         BT_MBOX_PRINT(2, SCO_DURATION, true);
 573
 574         pos += scnprintf(buf+pos, bufsz-pos, "MBOX dw3:\n");
 575
 576         BT_MBOX_PRINT(3, SCO_STATE, false);
 577         BT_MBOX_PRINT(3, SNIFF_STATE, false);
 578         BT_MBOX_PRINT(3, A2DP_STATE, false);
 579         BT_MBOX_PRINT(3, ACL_STATE, false);
 580         BT_MBOX_PRINT(3, MSTR_STATE, false);
 581         BT_MBOX_PRINT(3, OBX_STATE, false);
 582         BT_MBOX_PRINT(3, OPEN_CON_2, false);
 583         BT_MBOX_PRINT(3, TRAFFIC_LOAD, false);
 584         BT_MBOX_PRINT(3, CHL_SEQN_LSB, false);
 585         BT_MBOX_PRINT(3, INBAND_P, false);
 586         BT_MBOX_PRINT(3, MSG_TYPE_2, false);
 587         BT_MBOX_PRINT(3, SSN_2, false);
 588         BT_MBOX_PRINT(3, UPDATE_REQUEST, true);
 589
 590         pos += scnprintf(buf+pos, bufsz-pos, "bt_status = %d\n",
 591                          notif->bt_status);
 592         pos += scnprintf(buf+pos, bufsz-pos, "bt_open_conn = %d\n",
 593                          notif->bt_open_conn);
 594         pos += scnprintf(buf+pos, bufsz-pos, "bt_traffic_load = %d\n",
 595                          notif->bt_traffic_load);
 596         pos += scnprintf(buf+pos, bufsz-pos, "bt_agg_traffic_load = %d\n",
 597                          notif->bt_agg_traffic_load);
 598         pos += scnprintf(buf+pos, bufsz-pos, "bt_ci_compliance = %d\n",
 599                          notif->bt_ci_compliance);
 600         pos += scnprintf(buf+pos, bufsz-pos, "primary_ch_lut = %d\n",
 601                          le32_to_cpu(notif->primary_ch_lut));
 602         pos += scnprintf(buf+pos, bufsz-pos, "secondary_ch_lut = %d\n",
 603                          le32_to_cpu(notif->secondary_ch_lut));
 604         pos += scnprintf(buf+pos, bufsz-pos, "bt_activity_grading = %d\n",
 605                          le32_to_cpu(notif->bt_activity_grading));
 606
 607         mutex_unlock(&mvm->mutex);
 608
 609         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 610         kfree(buf);
 611
 612         return ret;
 613 }
 614 #undef BT_MBOX_PRINT
 615
 616 static ssize_t iwl_dbgfs_bt_cmd_read(struct file *file, char __user *user_buf,
 617                                      size_t count, loff_t *ppos)
 618 {
 619         struct iwl_mvm *mvm = file->private_data;
 620         struct iwl_bt_coex_ci_cmd *cmd = &mvm->last_bt_ci_cmd;
 621         char buf[256];
 622         int bufsz = sizeof(buf);
 623         int pos = 0;
 624
 625         mutex_lock(&mvm->mutex);
 626
 627         pos += scnprintf(buf+pos, bufsz-pos, "Channel inhibition CMD\n");
 628         pos += scnprintf(buf+pos, bufsz-pos,
 629                        "\tPrimary Channel Bitmap 0x%016llx Fat: %d\n",
 630                        le64_to_cpu(cmd->bt_primary_ci),
 631                        !!cmd->co_run_bw_primary);
 632         pos += scnprintf(buf+pos, bufsz-pos,
 633                        "\tSecondary Channel Bitmap 0x%016llx Fat: %d\n",
 634                        le64_to_cpu(cmd->bt_secondary_ci),
 635                        !!cmd->co_run_bw_secondary);
 636
 637         pos += scnprintf(buf+pos, bufsz-pos, "BT Configuration CMD\n");
 638         pos += scnprintf(buf+pos, bufsz-pos, "\tACK Kill Mask 0x%08x\n",
 639                          iwl_bt_ack_kill_msk[mvm->bt_kill_msk]);
 640         pos += scnprintf(buf+pos, bufsz-pos, "\tCTS Kill Mask 0x%08x\n",
 641                          iwl_bt_cts_kill_msk[mvm->bt_kill_msk]);
 642
 643         mutex_unlock(&mvm->mutex);
 644
 645         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 646 }
 647
 648 #define PRINT_STATS_LE32(_str, _val)                                    \
 649                          pos += scnprintf(buf + pos, bufsz - pos,       \
 650                                           fmt_table, _str,              \
 651                                           le32_to_cpu(_val))
 652
 653 static ssize_t iwl_dbgfs_fw_rx_stats_read(struct file *file,
 654                                           char __user *user_buf, size_t count,
 655                                           loff_t *ppos)
 656 {
 657         struct iwl_mvm *mvm = file->private_data;
 658         static const char *fmt_table = "\t%-30s %10u\n";
 659         static const char *fmt_header = "%-32s\n";
 660         int pos = 0;
 661         char *buf;
 662         int ret;
 663         /* 43 is the size of each data line, 33 is the size of each header */
 664         size_t bufsz =
 665                 ((sizeof(struct mvm_statistics_rx) / sizeof(__le32)) * 43) +
 666                 (4 * 33) + 1;
 667
 668         struct mvm_statistics_rx_phy *ofdm;
 669         struct mvm_statistics_rx_phy *cck;
 670         struct mvm_statistics_rx_non_phy *general;
 671         struct mvm_statistics_rx_ht_phy *ht;
 672
 673         buf = kzalloc(bufsz, GFP_KERNEL);
 674         if (!buf)
 675                 return -ENOMEM;
 676
 677         mutex_lock(&mvm->mutex);
 678
 679         ofdm = &mvm->rx_stats.ofdm;
 680         cck = &mvm->rx_stats.cck;
 681         general = &mvm->rx_stats.general;
 682         ht = &mvm->rx_stats.ofdm_ht;
 683
 684         pos += scnprintf(buf + pos, bufsz - pos, fmt_header,
 685                          "Statistics_Rx - OFDM");
 686         PRINT_STATS_LE32("ina_cnt", ofdm->ina_cnt);
 687         PRINT_STATS_LE32("fina_cnt", ofdm->fina_cnt);
 688         PRINT_STATS_LE32("plcp_err", ofdm->plcp_err);
 689         PRINT_STATS_LE32("crc32_err", ofdm->crc32_err);
 690         PRINT_STATS_LE32("overrun_err", ofdm->overrun_err);
 691         PRINT_STATS_LE32("early_overrun_err", ofdm->early_overrun_err);
 692         PRINT_STATS_LE32("crc32_good", ofdm->crc32_good);
 693         PRINT_STATS_LE32("false_alarm_cnt", ofdm->false_alarm_cnt);
 694         PRINT_STATS_LE32("fina_sync_err_cnt", ofdm->fina_sync_err_cnt);
 695         PRINT_STATS_LE32("sfd_timeout", ofdm->sfd_timeout);
 696         PRINT_STATS_LE32("fina_timeout", ofdm->fina_timeout);
 697         PRINT_STATS_LE32("unresponded_rts", ofdm->unresponded_rts);
 698         PRINT_STATS_LE32("rxe_frame_lmt_overrun",
 699                          ofdm->rxe_frame_limit_overrun);
 700         PRINT_STATS_LE32("sent_ack_cnt", ofdm->sent_ack_cnt);
 701         PRINT_STATS_LE32("sent_cts_cnt", ofdm->sent_cts_cnt);
 702         PRINT_STATS_LE32("sent_ba_rsp_cnt", ofdm->sent_ba_rsp_cnt);
 703         PRINT_STATS_LE32("dsp_self_kill", ofdm->dsp_self_kill);
 704         PRINT_STATS_LE32("mh_format_err", ofdm->mh_format_err);
 705         PRINT_STATS_LE32("re_acq_main_rssi_sum", ofdm->re_acq_main_rssi_sum);
 706         PRINT_STATS_LE32("reserved", ofdm->reserved);
 707
 708         pos += scnprintf(buf + pos, bufsz - pos, fmt_header,
 709                          "Statistics_Rx - CCK");
 710         PRINT_STATS_LE32("ina_cnt", cck->ina_cnt);
 711         PRINT_STATS_LE32("fina_cnt", cck->fina_cnt);
 712         PRINT_STATS_LE32("plcp_err", cck->plcp_err);
 713         PRINT_STATS_LE32("crc32_err", cck->crc32_err);
 714         PRINT_STATS_LE32("overrun_err", cck->overrun_err);
 715         PRINT_STATS_LE32("early_overrun_err", cck->early_overrun_err);
 716         PRINT_STATS_LE32("crc32_good", cck->crc32_good);
 717         PRINT_STATS_LE32("false_alarm_cnt", cck->false_alarm_cnt);
 718         PRINT_STATS_LE32("fina_sync_err_cnt", cck->fina_sync_err_cnt);
 719         PRINT_STATS_LE32("sfd_timeout", cck->sfd_timeout);
 720         PRINT_STATS_LE32("fina_timeout", cck->fina_timeout);
 721         PRINT_STATS_LE32("unresponded_rts", cck->unresponded_rts);
 722         PRINT_STATS_LE32("rxe_frame_lmt_overrun",
 723                          cck->rxe_frame_limit_overrun);
 724         PRINT_STATS_LE32("sent_ack_cnt", cck->sent_ack_cnt);
 725         PRINT_STATS_LE32("sent_cts_cnt", cck->sent_cts_cnt);
 726         PRINT_STATS_LE32("sent_ba_rsp_cnt", cck->sent_ba_rsp_cnt);
 727         PRINT_STATS_LE32("dsp_self_kill", cck->dsp_self_kill);
 728         PRINT_STATS_LE32("mh_format_err", cck->mh_format_err);
 729         PRINT_STATS_LE32("re_acq_main_rssi_sum", cck->re_acq_main_rssi_sum);
 730         PRINT_STATS_LE32("reserved", cck->reserved);
 731
 732         pos += scnprintf(buf + pos, bufsz - pos, fmt_header,
 733                          "Statistics_Rx - GENERAL");
 734         PRINT_STATS_LE32("bogus_cts", general->bogus_cts);
 735         PRINT_STATS_LE32("bogus_ack", general->bogus_ack);
 736         PRINT_STATS_LE32("non_bssid_frames", general->non_bssid_frames);
 737         PRINT_STATS_LE32("filtered_frames", general->filtered_frames);
 738         PRINT_STATS_LE32("non_channel_beacons", general->non_channel_beacons);
 739         PRINT_STATS_LE32("channel_beacons", general->channel_beacons);
 740         PRINT_STATS_LE32("num_missed_bcon", general->num_missed_bcon);
 741         PRINT_STATS_LE32("adc_rx_saturation_time",
 742                          general->adc_rx_saturation_time);
 743         PRINT_STATS_LE32("ina_detection_search_time",
 744                          general->ina_detection_search_time);
 745         PRINT_STATS_LE32("beacon_silence_rssi_a",
 746                          general->beacon_silence_rssi_a);
 747         PRINT_STATS_LE32("beacon_silence_rssi_b",
 748                          general->beacon_silence_rssi_b);
 749         PRINT_STATS_LE32("beacon_silence_rssi_c",
 750                          general->beacon_silence_rssi_c);
 751         PRINT_STATS_LE32("interference_data_flag",
 752                          general->interference_data_flag);
 753         PRINT_STATS_LE32("channel_load", general->channel_load);
 754         PRINT_STATS_LE32("dsp_false_alarms", general->dsp_false_alarms);
 755         PRINT_STATS_LE32("beacon_rssi_a", general->beacon_rssi_a);
 756         PRINT_STATS_LE32("beacon_rssi_b", general->beacon_rssi_b);
 757         PRINT_STATS_LE32("beacon_rssi_c", general->beacon_rssi_c);
 758         PRINT_STATS_LE32("beacon_energy_a", general->beacon_energy_a);
 759         PRINT_STATS_LE32("beacon_energy_b", general->beacon_energy_b);
 760         PRINT_STATS_LE32("beacon_energy_c", general->beacon_energy_c);
 761         PRINT_STATS_LE32("num_bt_kills", general->num_bt_kills);
 762         PRINT_STATS_LE32("mac_id", general->mac_id);
 763         PRINT_STATS_LE32("directed_data_mpdu", general->directed_data_mpdu);
 764
 765         pos += scnprintf(buf + pos, bufsz - pos, fmt_header,
 766                          "Statistics_Rx - HT");
 767         PRINT_STATS_LE32("plcp_err", ht->plcp_err);
 768         PRINT_STATS_LE32("overrun_err", ht->overrun_err);
 769         PRINT_STATS_LE32("early_overrun_err", ht->early_overrun_err);
 770         PRINT_STATS_LE32("crc32_good", ht->crc32_good);
 771         PRINT_STATS_LE32("crc32_err", ht->crc32_err);
 772         PRINT_STATS_LE32("mh_format_err", ht->mh_format_err);
 773         PRINT_STATS_LE32("agg_crc32_good", ht->agg_crc32_good);
 774         PRINT_STATS_LE32("agg_mpdu_cnt", ht->agg_mpdu_cnt);
 775         PRINT_STATS_LE32("agg_cnt", ht->agg_cnt);
 776         PRINT_STATS_LE32("unsupport_mcs", ht->unsupport_mcs);
 777
 778         mutex_unlock(&mvm->mutex);
 779
 780         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 781         kfree(buf);
 782
 783         return ret;
 784 }
 785 #undef PRINT_STAT_LE32
 786
 787 static ssize_t iwl_dbgfs_fw_restart_write(struct file *file,
 788                                           const char __user *user_buf,
 789                                           size_t count, loff_t *ppos)
 790 {
 791         struct iwl_mvm *mvm = file->private_data;
 792         int ret;
 793
 794         mutex_lock(&mvm->mutex);
 795
 796         /* allow one more restart that we're provoking here */
 797         if (mvm->restart_fw >= 0)
 798                 mvm->restart_fw++;
 799
 800         /* take the return value to make compiler happy - it will fail anyway */
 801         ret = iwl_mvm_send_cmd_pdu(mvm, REPLY_ERROR, CMD_SYNC, 0, NULL);
 802
 803         mutex_unlock(&mvm->mutex);
 804
 805         return count;
 806 }
 807
 808 static ssize_t iwl_dbgfs_fw_nmi_write(struct file *file,
 809                                       const char __user *user_buf,
 810                                       size_t count, loff_t *ppos)
 811 {
 812         struct iwl_mvm *mvm = file->private_data;
 813
 814         iwl_write_prph(mvm->trans, DEVICE_SET_NMI_REG, 1);
 815
 816         return count;
 817 }
 818
 819 static ssize_t
 820 iwl_dbgfs_scan_ant_rxchain_read(struct file *file,
 821                                 char __user *user_buf,
 822                                 size_t count, loff_t *ppos)
 823 {
 824         struct iwl_mvm *mvm = file->private_data;
 825         int pos = 0;
 826         char buf[32];
 827         const size_t bufsz = sizeof(buf);
 828
 829         /* print which antennas were set for the scan command by the user */
 830         pos += scnprintf(buf + pos, bufsz - pos, "Antennas for scan: ");
 831         if (mvm->scan_rx_ant & ANT_A)
 832                 pos += scnprintf(buf + pos, bufsz - pos, "A");
 833         if (mvm->scan_rx_ant & ANT_B)
 834                 pos += scnprintf(buf + pos, bufsz - pos, "B");
 835         if (mvm->scan_rx_ant & ANT_C)
 836                 pos += scnprintf(buf + pos, bufsz - pos, "C");
 837         pos += scnprintf(buf + pos, bufsz - pos, " (%hhx)\n", mvm->scan_rx_ant);
 838
 839         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 840 }
 841
 842 static ssize_t
 843 iwl_dbgfs_scan_ant_rxchain_write(struct file *file,
 844                                  const char __user *user_buf,
 845                                  size_t count, loff_t *ppos)
 846 {
 847         struct iwl_mvm *mvm = file->private_data;
 848         char buf[8];
 849         int buf_size;
 850         u8 scan_rx_ant;
 851
 852         memset(buf, 0, sizeof(buf));
 853         buf_size = min(count, sizeof(buf) - 1);
 854
 855         /* get the argument from the user and check if it is valid */
 856         if (copy_from_user(buf, user_buf, buf_size))
 857                 return -EFAULT;
 858         if (sscanf(buf, "%hhx", &scan_rx_ant) != 1)
 859                 return -EINVAL;
 860         if (scan_rx_ant > ANT_ABC)
 861                 return -EINVAL;
 862         if (scan_rx_ant & ~iwl_fw_valid_rx_ant(mvm->fw))
 863                 return -EINVAL;
 864
 865         /* change the rx antennas for scan command */
 866         mvm->scan_rx_ant = scan_rx_ant;
 867
 868         return count;
 869 }
 870
 871
 872 static void iwl_dbgfs_update_bf(struct ieee80211_vif *vif,
 873                                 enum iwl_dbgfs_bf_mask param, int value)
 874 {
 875         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 876         struct iwl_dbgfs_bf *dbgfs_bf = &mvmvif->dbgfs_bf;
 877
 878         dbgfs_bf->mask |= param;
 879
 880         switch (param) {
 881         case MVM_DEBUGFS_BF_ENERGY_DELTA:
 882                 dbgfs_bf->bf_energy_delta = value;
 883                 break;
 884         case MVM_DEBUGFS_BF_ROAMING_ENERGY_DELTA:
 885                 dbgfs_bf->bf_roaming_energy_delta = value;
 886                 break;
 887         case MVM_DEBUGFS_BF_ROAMING_STATE:
 888                 dbgfs_bf->bf_roaming_state = value;
 889                 break;
 890         case MVM_DEBUGFS_BF_TEMP_THRESHOLD:
 891                 dbgfs_bf->bf_temp_threshold = value;
 892                 break;
 893         case MVM_DEBUGFS_BF_TEMP_FAST_FILTER:
 894                 dbgfs_bf->bf_temp_fast_filter = value;
 895                 break;
 896         case MVM_DEBUGFS_BF_TEMP_SLOW_FILTER:
 897                 dbgfs_bf->bf_temp_slow_filter = value;
 898                 break;
 899         case MVM_DEBUGFS_BF_ENABLE_BEACON_FILTER:
 900                 dbgfs_bf->bf_enable_beacon_filter = value;
 901                 break;
 902         case MVM_DEBUGFS_BF_DEBUG_FLAG:
 903                 dbgfs_bf->bf_debug_flag = value;
 904                 break;
 905         case MVM_DEBUGFS_BF_ESCAPE_TIMER:
 906                 dbgfs_bf->bf_escape_timer = value;
 907                 break;
 908         case MVM_DEBUGFS_BA_ENABLE_BEACON_ABORT:
 909                 dbgfs_bf->ba_enable_beacon_abort = value;
 910                 break;
 911         case MVM_DEBUGFS_BA_ESCAPE_TIMER:
 912                 dbgfs_bf->ba_escape_timer = value;
 913                 break;
 914         }
 915 }
 916
 917 static ssize_t iwl_dbgfs_bf_params_write(struct file *file,
 918                                          const char __user *user_buf,
 919                                          size_t count, loff_t *ppos)
 920 {
 921         struct ieee80211_vif *vif = file->private_data;
 922         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 923         struct iwl_mvm *mvm = mvmvif->dbgfs_data;
 924         enum iwl_dbgfs_bf_mask param;
 925         char buf[256];
 926         int buf_size;
 927         int value;
 928         int ret = 0;
 929
 930         memset(buf, 0, sizeof(buf));
 931         buf_size = min(count, sizeof(buf) - 1);
 932         if (copy_from_user(buf, user_buf, buf_size))
 933                 return -EFAULT;
 934
 935         if (!strncmp("bf_energy_delta=", buf, 16)) {
 936                 if (sscanf(buf+16, "%d", &value) != 1)
 937                         return -EINVAL;
 938                 if (value < IWL_BF_ENERGY_DELTA_MIN ||
 939                     value > IWL_BF_ENERGY_DELTA_MAX)
 940                         return -EINVAL;
 941                 param = MVM_DEBUGFS_BF_ENERGY_DELTA;
 942         } else if (!strncmp("bf_roaming_energy_delta=", buf, 24)) {
 943                 if (sscanf(buf+24, "%d", &value) != 1)
 944                         return -EINVAL;
 945                 if (value < IWL_BF_ROAMING_ENERGY_DELTA_MIN ||
 946                     value > IWL_BF_ROAMING_ENERGY_DELTA_MAX)
 947                         return -EINVAL;
 948                 param = MVM_DEBUGFS_BF_ROAMING_ENERGY_DELTA;
 949         } else if (!strncmp("bf_roaming_state=", buf, 17)) {
 950                 if (sscanf(buf+17, "%d", &value) != 1)
 951                         return -EINVAL;
 952                 if (value < IWL_BF_ROAMING_STATE_MIN ||
 953                     value > IWL_BF_ROAMING_STATE_MAX)
 954                         return -EINVAL;
 955                 param = MVM_DEBUGFS_BF_ROAMING_STATE;
 956         } else if (!strncmp("bf_temp_threshold=", buf, 18)) {
 957                 if (sscanf(buf+18, "%d", &value) != 1)
 958                         return -EINVAL;
 959                 if (value < IWL_BF_TEMP_THRESHOLD_MIN ||
 960                     value > IWL_BF_TEMP_THRESHOLD_MAX)
 961                         return -EINVAL;
 962                 param = MVM_DEBUGFS_BF_TEMP_THRESHOLD;
 963         } else if (!strncmp("bf_temp_fast_filter=", buf, 20)) {
 964                 if (sscanf(buf+20, "%d", &value) != 1)
 965                         return -EINVAL;
 966                 if (value < IWL_BF_TEMP_FAST_FILTER_MIN ||
 967                     value > IWL_BF_TEMP_FAST_FILTER_MAX)
 968                         return -EINVAL;
 969                 param = MVM_DEBUGFS_BF_TEMP_FAST_FILTER;
 970         } else if (!strncmp("bf_temp_slow_filter=", buf, 20)) {
 971                 if (sscanf(buf+20, "%d", &value) != 1)
 972                         return -EINVAL;
 973                 if (value < IWL_BF_TEMP_SLOW_FILTER_MIN ||
 974                     value > IWL_BF_TEMP_SLOW_FILTER_MAX)
 975                         return -EINVAL;
 976                 param = MVM_DEBUGFS_BF_TEMP_SLOW_FILTER;
 977         } else if (!strncmp("bf_enable_beacon_filter=", buf, 24)) {
 978                 if (sscanf(buf+24, "%d", &value) != 1)
 979                         return -EINVAL;
 980                 if (value < 0 || value > 1)
 981                         return -EINVAL;
 982                 param = MVM_DEBUGFS_BF_ENABLE_BEACON_FILTER;
 983         } else if (!strncmp("bf_debug_flag=", buf, 14)) {
 984                 if (sscanf(buf+14, "%d", &value) != 1)
 985                         return -EINVAL;
 986                 if (value < 0 || value > 1)
 987                         return -EINVAL;
 988                 param = MVM_DEBUGFS_BF_DEBUG_FLAG;
 989         } else if (!strncmp("bf_escape_timer=", buf, 16)) {
 990                 if (sscanf(buf+16, "%d", &value) != 1)
 991                         return -EINVAL;
 992                 if (value < IWL_BF_ESCAPE_TIMER_MIN ||
 993                     value > IWL_BF_ESCAPE_TIMER_MAX)
 994                         return -EINVAL;
 995                 param = MVM_DEBUGFS_BF_ESCAPE_TIMER;
 996         } else if (!strncmp("ba_escape_timer=", buf, 16)) {
 997                 if (sscanf(buf+16, "%d", &value) != 1)
 998                         return -EINVAL;
 999                 if (value < IWL_BA_ESCAPE_TIMER_MIN ||
1000                     value > IWL_BA_ESCAPE_TIMER_MAX)
1001                         return -EINVAL;
1002                 param = MVM_DEBUGFS_BA_ESCAPE_TIMER;
1003         } else if (!strncmp("ba_enable_beacon_abort=", buf, 23)) {
1004                 if (sscanf(buf+23, "%d", &value) != 1)
1005                         return -EINVAL;
1006                 if (value < 0 || value > 1)
1007                         return -EINVAL;
1008                 param = MVM_DEBUGFS_BA_ENABLE_BEACON_ABORT;
1009         } else {
1010                 return -EINVAL;
1011         }
1012
1013         mutex_lock(&mvm->mutex);
1014         iwl_dbgfs_update_bf(vif, param, value);
1015         if (param == MVM_DEBUGFS_BF_ENABLE_BEACON_FILTER && !value) {
1016                 ret = iwl_mvm_disable_beacon_filter(mvm, vif);
1017         } else {
1018                 ret = iwl_mvm_enable_beacon_filter(mvm, vif);
1019         }
1020         mutex_unlock(&mvm->mutex);
1021
1022         return ret ?: count;
1023 }
1024
1025 static ssize_t iwl_dbgfs_bf_params_read(struct file *file,
1026                                         char __user *user_buf,
1027                                         size_t count, loff_t *ppos)
1028 {
1029         struct ieee80211_vif *vif = file->private_data;
1030         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1031         char buf[256];
1032         int pos = 0;
1033         const size_t bufsz = sizeof(buf);
1034         struct iwl_beacon_filter_cmd cmd = {
1035                 IWL_BF_CMD_CONFIG_DEFAULTS,
1036                 .bf_enable_beacon_filter =
1037                         cpu_to_le32(IWL_BF_ENABLE_BEACON_FILTER_DEFAULT),
1038                 .ba_enable_beacon_abort =
1039                         cpu_to_le32(IWL_BA_ENABLE_BEACON_ABORT_DEFAULT),
1040         };
1041
1042         iwl_mvm_beacon_filter_debugfs_parameters(vif, &cmd);
1043         if (mvmvif->bf_data.bf_enabled)
1044                 cmd.bf_enable_beacon_filter = cpu_to_le32(1);
1045         else
1046                 cmd.bf_enable_beacon_filter = 0;
1047
1048         pos += scnprintf(buf+pos, bufsz-pos, "bf_energy_delta = %d\n",
1049                          le32_to_cpu(cmd.bf_energy_delta));
1050         pos += scnprintf(buf+pos, bufsz-pos, "bf_roaming_energy_delta = %d\n",
1051                          le32_to_cpu(cmd.bf_roaming_energy_delta));
1052         pos += scnprintf(buf+pos, bufsz-pos, "bf_roaming_state = %d\n",
1053                          le32_to_cpu(cmd.bf_roaming_state));
1054         pos += scnprintf(buf+pos, bufsz-pos, "bf_temp_threshold = %d\n",
1055                          le32_to_cpu(cmd.bf_temp_threshold));
1056         pos += scnprintf(buf+pos, bufsz-pos, "bf_temp_fast_filter = %d\n",
1057                          le32_to_cpu(cmd.bf_temp_fast_filter));
1058         pos += scnprintf(buf+pos, bufsz-pos, "bf_temp_slow_filter = %d\n",
1059                          le32_to_cpu(cmd.bf_temp_slow_filter));
1060         pos += scnprintf(buf+pos, bufsz-pos, "bf_enable_beacon_filter = %d\n",
1061                          le32_to_cpu(cmd.bf_enable_beacon_filter));
1062         pos += scnprintf(buf+pos, bufsz-pos, "bf_debug_flag = %d\n",
1063                          le32_to_cpu(cmd.bf_debug_flag));
1064         pos += scnprintf(buf+pos, bufsz-pos, "bf_escape_timer = %d\n",
1065                          le32_to_cpu(cmd.bf_escape_timer));
1066         pos += scnprintf(buf+pos, bufsz-pos, "ba_escape_timer = %d\n",
1067                          le32_to_cpu(cmd.ba_escape_timer));
1068         pos += scnprintf(buf+pos, bufsz-pos, "ba_enable_beacon_abort = %d\n",
1069                          le32_to_cpu(cmd.ba_enable_beacon_abort));
1070
1071         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
1072 }
1073
1074 #ifdef CONFIG_PM_SLEEP
1075 static ssize_t iwl_dbgfs_d3_sram_write(struct file *file,
1076                                        const char __user *user_buf,
1077                                        size_t count, loff_t *ppos)
1078 {
1079         struct iwl_mvm *mvm = file->private_data;
1080         char buf[8] = {};
1081         int store;
1082
1083         count = min_t(size_t, count, sizeof(buf) - 1);
1084         if (copy_from_user(buf, user_buf, count))
1085                 return -EFAULT;
1086
1087         if (sscanf(buf, "%d", &store) != 1)
1088                 return -EINVAL;
1089
1090         mvm->store_d3_resume_sram = store;
1091
1092         return count;
1093 }
1094
1095 static ssize_t iwl_dbgfs_d3_sram_read(struct file *file, char __user *user_buf,
1096                                       size_t count, loff_t *ppos)
1097 {
1098         struct iwl_mvm *mvm = file->private_data;
1099         const struct fw_img *img;
1100         int ofs, len, pos = 0;
1101         size_t bufsz, ret;
1102         char *buf;
1103         u8 *ptr = mvm->d3_resume_sram;
1104
1105         img = &mvm->fw->img[IWL_UCODE_WOWLAN];
1106         len = img->sec[IWL_UCODE_SECTION_DATA].len;
1107
1108         bufsz = len * 4 + 256;
1109         buf = kzalloc(bufsz, GFP_KERNEL);
1110         if (!buf)
1111                 return -ENOMEM;
1112
1113         pos += scnprintf(buf, bufsz, "D3 SRAM capture: %sabled\n",
1114                          mvm->store_d3_resume_sram ? "en" : "dis");
1115
1116         if (ptr) {
1117                 for (ofs = 0; ofs < len; ofs += 16) {
1118                         pos += scnprintf(buf + pos, bufsz - pos,
1119                                          "0x%.4x ", ofs);
1120                         hex_dump_to_buffer(ptr + ofs, 16, 16, 1, buf + pos,
1121                                            bufsz - pos, false);
1122                         pos += strlen(buf + pos);
1123                         if (bufsz - pos > 0)
1124                                 buf[pos++] = '\n';
1125                 }
1126         } else {
1127                 pos += scnprintf(buf + pos, bufsz - pos,
1128                                  "(no data captured)\n");
1129         }
1130
1131         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
1132
1133         kfree(buf);
1134
1135         return ret;
1136 }
1137 #endif
1138
1139 #define MVM_DEBUGFS_READ_FILE_OPS(name)                                 \
1140 static const struct file_operations iwl_dbgfs_##name##_ops = {  \
1141         .read = iwl_dbgfs_##name##_read,                                \
1142         .open = simple_open,                                            \
1143         .llseek = generic_file_llseek,                                  \
1144 }
1145
1146 #define MVM_DEBUGFS_READ_WRITE_FILE_OPS(name)                           \
1147 static const struct file_operations iwl_dbgfs_##name##_ops = {  \
1148         .write = iwl_dbgfs_##name##_write,                              \
1149         .read = iwl_dbgfs_##name##_read,                                \
1150         .open = simple_open,                                            \
1151         .llseek = generic_file_llseek,                                  \
1152 };
1153
1154 #define MVM_DEBUGFS_WRITE_FILE_OPS(name)                                \
1155 static const struct file_operations iwl_dbgfs_##name##_ops = {  \
1156         .write = iwl_dbgfs_##name##_write,                              \
1157         .open = simple_open,                                            \
1158         .llseek = generic_file_llseek,                                  \
1159 };
1160
1161 #define MVM_DEBUGFS_ADD_FILE(name, parent, mode) do {                   \
1162                 if (!debugfs_create_file(#name, mode, parent, mvm,      \
1163                                          &iwl_dbgfs_##name##_ops))      \
1164                         goto err;                                       \
1165         } while (0)
1166
1167 #define MVM_DEBUGFS_ADD_FILE_VIF(name, parent, mode) do {               \
1168                 if (!debugfs_create_file(#name, mode, parent, vif,      \
1169                                          &iwl_dbgfs_##name##_ops))      \
1170                         goto err;                                       \
1171         } while (0)
1172
1173 /* Device wide debugfs entries */
1174 MVM_DEBUGFS_WRITE_FILE_OPS(tx_flush);
1175 MVM_DEBUGFS_WRITE_FILE_OPS(sta_drain);
1176 MVM_DEBUGFS_READ_WRITE_FILE_OPS(sram);
1177 MVM_DEBUGFS_READ_FILE_OPS(stations);
1178 MVM_DEBUGFS_READ_FILE_OPS(bt_notif);
1179 MVM_DEBUGFS_READ_FILE_OPS(bt_cmd);
1180 MVM_DEBUGFS_READ_WRITE_FILE_OPS(disable_power_off);
1181 MVM_DEBUGFS_READ_FILE_OPS(fw_rx_stats);
1182 MVM_DEBUGFS_WRITE_FILE_OPS(fw_restart);
1183 MVM_DEBUGFS_WRITE_FILE_OPS(fw_nmi);
1184 MVM_DEBUGFS_READ_WRITE_FILE_OPS(scan_ant_rxchain);
1185
1186 #ifdef CONFIG_PM_SLEEP
1187 MVM_DEBUGFS_READ_WRITE_FILE_OPS(d3_sram);
1188 #endif
1189
1190 /* Interface specific debugfs entries */
1191 MVM_DEBUGFS_READ_FILE_OPS(mac_params);
1192 MVM_DEBUGFS_READ_WRITE_FILE_OPS(pm_params);
1193 MVM_DEBUGFS_READ_WRITE_FILE_OPS(bf_params);
1194
1195 int iwl_mvm_dbgfs_register(struct iwl_mvm *mvm, struct dentry *dbgfs_dir)
1196 {
1197         char buf[100];
1198
1199         mvm->debugfs_dir = dbgfs_dir;
1200
1201         MVM_DEBUGFS_ADD_FILE(tx_flush, mvm->debugfs_dir, S_IWUSR);
1202         MVM_DEBUGFS_ADD_FILE(sta_drain, mvm->debugfs_dir, S_IWUSR);
1203         MVM_DEBUGFS_ADD_FILE(sram, mvm->debugfs_dir, S_IWUSR | S_IRUSR);
1204         MVM_DEBUGFS_ADD_FILE(stations, dbgfs_dir, S_IRUSR);
1205         MVM_DEBUGFS_ADD_FILE(bt_notif, dbgfs_dir, S_IRUSR);
1206         MVM_DEBUGFS_ADD_FILE(bt_cmd, dbgfs_dir, S_IRUSR);
1207         if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_DEVICE_PS_CMD)
1208                 MVM_DEBUGFS_ADD_FILE(disable_power_off, mvm->debugfs_dir,
1209                                      S_IRUSR | S_IWUSR);
1210         MVM_DEBUGFS_ADD_FILE(fw_rx_stats, mvm->debugfs_dir, S_IRUSR);
1211         MVM_DEBUGFS_ADD_FILE(fw_restart, mvm->debugfs_dir, S_IWUSR);
1212         MVM_DEBUGFS_ADD_FILE(fw_nmi, mvm->debugfs_dir, S_IWUSR);
1213         MVM_DEBUGFS_ADD_FILE(scan_ant_rxchain, mvm->debugfs_dir,
1214                              S_IWUSR | S_IRUSR);
1215 #ifdef CONFIG_PM_SLEEP
1216         MVM_DEBUGFS_ADD_FILE(d3_sram, mvm->debugfs_dir, S_IRUSR | S_IWUSR);
1217         MVM_DEBUGFS_ADD_FILE(d3_test, mvm->debugfs_dir, S_IRUSR);
1218         if (!debugfs_create_bool("d3_wake_sysassert", S_IRUSR | S_IWUSR,
1219                                  mvm->debugfs_dir, &mvm->d3_wake_sysassert))
1220                 goto err;
1221 #endif
1222
1223         /*
1224          * Create a symlink with mac80211. It will be removed when mac80211
1225          * exists (before the opmode exists which removes the target.)
1226          */
1227         snprintf(buf, 100, "../../%s/%s",
1228                  dbgfs_dir->d_parent->d_parent->d_name.name,
1229                  dbgfs_dir->d_parent->d_name.name);
1230         if (!debugfs_create_symlink("iwlwifi", mvm->hw->wiphy->debugfsdir, buf))
1231                 goto err;
1232
1233         return 0;
1234 err:
1235         IWL_ERR(mvm, "Can't create the mvm debugfs directory\n");
1236         return -ENOMEM;
1237 }
1238
1239 void iwl_mvm_vif_dbgfs_register(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1240 {
1241         struct dentry *dbgfs_dir = vif->debugfs_dir;
1242         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1243         char buf[100];
1244
1245         /*
1246          * Check if debugfs directory already exist before creating it.
1247          * This may happen when, for example, resetting hw or suspend-resume
1248          */
1249         if (!dbgfs_dir || mvmvif->dbgfs_dir)
1250                 return;
1251
1252         mvmvif->dbgfs_dir = debugfs_create_dir("iwlmvm", dbgfs_dir);
1253         mvmvif->dbgfs_data = mvm;
1254
1255         if (!mvmvif->dbgfs_dir) {
1256                 IWL_ERR(mvm, "Failed to create debugfs directory under %s\n",
1257                         dbgfs_dir->d_name.name);
1258                 return;
1259         }
1260
1261         if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM &&
1262             vif->type == NL80211_IFTYPE_STATION && !vif->p2p)
1263                 MVM_DEBUGFS_ADD_FILE_VIF(pm_params, mvmvif->dbgfs_dir, S_IWUSR |
1264                                          S_IRUSR);
1265
1266         MVM_DEBUGFS_ADD_FILE_VIF(mac_params, mvmvif->dbgfs_dir,
1267                                  S_IRUSR);
1268
1269         if (vif->type == NL80211_IFTYPE_STATION && !vif->p2p &&
1270             mvmvif == mvm->bf_allowed_vif)
1271                 MVM_DEBUGFS_ADD_FILE_VIF(bf_params, mvmvif->dbgfs_dir,
1272                                          S_IRUSR | S_IWUSR);
1273
1274         /*
1275          * Create symlink for convenience pointing to interface specific
1276          * debugfs entries for the driver. For example, under
1277          * /sys/kernel/debug/iwlwifi/0000\:02\:00.0/iwlmvm/
1278          * find
1279          * netdev:wlan0 -> ../../../ieee80211/phy0/netdev:wlan0/iwlmvm/
1280          */
1281         snprintf(buf, 100, "../../../%s/%s/%s/%s",
1282                  dbgfs_dir->d_parent->d_parent->d_name.name,
1283                  dbgfs_dir->d_parent->d_name.name,
1284                  dbgfs_dir->d_name.name,
1285                  mvmvif->dbgfs_dir->d_name.name);
1286
1287         mvmvif->dbgfs_slink = debugfs_create_symlink(dbgfs_dir->d_name.name,
1288                                                      mvm->debugfs_dir, buf);
1289         if (!mvmvif->dbgfs_slink)
1290                 IWL_ERR(mvm, "Can't create debugfs symbolic link under %s\n",
1291                         dbgfs_dir->d_name.name);
1292         return;
1293 err:
1294         IWL_ERR(mvm, "Can't create debugfs entity\n");
1295 }
1296
1297 void iwl_mvm_vif_dbgfs_clean(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1298 {
1299         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1300
1301         debugfs_remove(mvmvif->dbgfs_slink);
1302         mvmvif->dbgfs_slink = NULL;
1303
1304         debugfs_remove_recursive(mvmvif->dbgfs_dir);
1305         mvmvif->dbgfs_dir = NULL;
1306 }