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 - 2014 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
  23  *
  24  * The full GNU General Public License is included in this distribution
  25  * in the file called COPYING.
  26  *
  27  * Contact Information:
  28  *  Intel Linux Wireless <ilw@linux.intel.com>
  29  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  30  *
  31  * BSD LICENSE
  32  *
  33  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
  34  * All rights reserved.
  35  *
  36  * Redistribution and use in source and binary forms, with or without
  37  * modification, are permitted provided that the following conditions
  38  * are met:
  39  *
  40  *  * Redistributions of source code must retain the above copyright
  41  *    notice, this list of conditions and the following disclaimer.
  42  *  * Redistributions in binary form must reproduce the above copyright
  43  *    notice, this list of conditions and the following disclaimer in
  44  *    the documentation and/or other materials provided with the
  45  *    distribution.
  46  *  * Neither the name Intel Corporation nor the names of its
  47  *    contributors may be used to endorse or promote products derived
  48  *    from this software without specific prior written permission.
  49  *
  50  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  51  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  52  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  53  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  54  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  55  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  56  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  57  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  58  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  59  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  60  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  61  *
  62  *****************************************************************************/
  63 #include <linux/vmalloc.h>
  64
  65 #include "mvm.h"
  66 #include "sta.h"
  67 #include "iwl-io.h"
  68 #include "debugfs.h"
  69 #include "iwl-fw-error-dump.h"
  70
  71 static ssize_t iwl_dbgfs_tx_flush_write(struct iwl_mvm *mvm, char *buf,
  72                                         size_t count, loff_t *ppos)
  73 {
  74         int ret;
  75         u32 scd_q_msk;
  76
  77         if (!mvm->ucode_loaded || mvm->cur_ucode != IWL_UCODE_REGULAR)
  78                 return -EIO;
  79
  80         if (sscanf(buf, "%x", &scd_q_msk) != 1)
  81                 return -EINVAL;
  82
  83         IWL_ERR(mvm, "FLUSHING queues: scd_q_msk = 0x%x\n", scd_q_msk);
  84
  85         mutex_lock(&mvm->mutex);
  86         ret =  iwl_mvm_flush_tx_path(mvm, scd_q_msk, true) ? : count;
  87         mutex_unlock(&mvm->mutex);
  88
  89         return ret;
  90 }
  91
  92 static ssize_t iwl_dbgfs_sta_drain_write(struct iwl_mvm *mvm, char *buf,
  93                                          size_t count, loff_t *ppos)
  94 {
  95         struct iwl_mvm_sta *mvmsta;
  96         int sta_id, drain, ret;
  97
  98         if (!mvm->ucode_loaded || mvm->cur_ucode != IWL_UCODE_REGULAR)
  99                 return -EIO;
 100
 101         if (sscanf(buf, "%d %d", &sta_id, &drain) != 2)
 102                 return -EINVAL;
 103         if (sta_id < 0 || sta_id >= IWL_MVM_STATION_COUNT)
 104                 return -EINVAL;
 105         if (drain < 0 || drain > 1)
 106                 return -EINVAL;
 107
 108         mutex_lock(&mvm->mutex);
 109
 110         mvmsta = iwl_mvm_sta_from_staid_protected(mvm, sta_id);
 111
 112         if (!mvmsta)
 113                 ret = -ENOENT;
 114         else
 115                 ret = iwl_mvm_drain_sta(mvm, mvmsta, drain) ? : count;
 116
 117         mutex_unlock(&mvm->mutex);
 118
 119         return ret;
 120 }
 121
 122 static int iwl_dbgfs_fw_error_dump_open(struct inode *inode, struct file *file)
 123 {
 124         struct iwl_mvm *mvm = inode->i_private;
 125         int ret;
 126
 127         if (!mvm)
 128                 return -EINVAL;
 129
 130         mutex_lock(&mvm->mutex);
 131         if (!mvm->fw_error_dump) {
 132                 ret = -ENODATA;
 133                 goto out;
 134         }
 135
 136         file->private_data = mvm->fw_error_dump;
 137         mvm->fw_error_dump = NULL;
 138         ret = 0;
 139
 140 out:
 141         mutex_unlock(&mvm->mutex);
 142         return ret;
 143 }
 144
 145 static ssize_t iwl_dbgfs_fw_error_dump_read(struct file *file,
 146                                             char __user *user_buf,
 147                                             size_t count, loff_t *ppos)
 148 {
 149         struct iwl_fw_error_dump_file *dump_file = file->private_data;
 150
 151         return simple_read_from_buffer(user_buf, count, ppos,
 152                                        dump_file,
 153                                        le32_to_cpu(dump_file->file_len));
 154 }
 155
 156 static int iwl_dbgfs_fw_error_dump_release(struct inode *inode,
 157                                            struct file *file)
 158 {
 159         vfree(file->private_data);
 160
 161         return 0;
 162 }
 163
 164 static ssize_t iwl_dbgfs_sram_read(struct file *file, char __user *user_buf,
 165                                    size_t count, loff_t *ppos)
 166 {
 167         struct iwl_mvm *mvm = file->private_data;
 168         const struct fw_img *img;
 169         unsigned int ofs, len;
 170         size_t ret;
 171         u8 *ptr;
 172
 173         if (!mvm->ucode_loaded)
 174                 return -EINVAL;
 175
 176         /* default is to dump the entire data segment */
 177         img = &mvm->fw->img[mvm->cur_ucode];
 178         ofs = img->sec[IWL_UCODE_SECTION_DATA].offset;
 179         len = img->sec[IWL_UCODE_SECTION_DATA].len;
 180
 181         if (mvm->dbgfs_sram_len) {
 182                 ofs = mvm->dbgfs_sram_offset;
 183                 len = mvm->dbgfs_sram_len;
 184         }
 185
 186         ptr = kzalloc(len, GFP_KERNEL);
 187         if (!ptr)
 188                 return -ENOMEM;
 189
 190         iwl_trans_read_mem_bytes(mvm->trans, ofs, ptr, len);
 191
 192         ret = simple_read_from_buffer(user_buf, count, ppos, ptr, len);
 193
 194         kfree(ptr);
 195
 196         return ret;
 197 }
 198
 199 static ssize_t iwl_dbgfs_sram_write(struct iwl_mvm *mvm, char *buf,
 200                                     size_t count, loff_t *ppos)
 201 {
 202         const struct fw_img *img;
 203         u32 offset, len;
 204         u32 img_offset, img_len;
 205
 206         if (!mvm->ucode_loaded)
 207                 return -EINVAL;
 208
 209         img = &mvm->fw->img[mvm->cur_ucode];
 210         img_offset = img->sec[IWL_UCODE_SECTION_DATA].offset;
 211         img_len = img->sec[IWL_UCODE_SECTION_DATA].len;
 212
 213         if (sscanf(buf, "%x,%x", &offset, &len) == 2) {
 214                 if ((offset & 0x3) || (len & 0x3))
 215                         return -EINVAL;
 216
 217                 if (offset + len > img_offset + img_len)
 218                         return -EINVAL;
 219
 220                 mvm->dbgfs_sram_offset = offset;
 221                 mvm->dbgfs_sram_len = len;
 222         } else {
 223                 mvm->dbgfs_sram_offset = 0;
 224                 mvm->dbgfs_sram_len = 0;
 225         }
 226
 227         return count;
 228 }
 229
 230 static ssize_t iwl_dbgfs_stations_read(struct file *file, char __user *user_buf,
 231                                        size_t count, loff_t *ppos)
 232 {
 233         struct iwl_mvm *mvm = file->private_data;
 234         struct ieee80211_sta *sta;
 235         char buf[400];
 236         int i, pos = 0, bufsz = sizeof(buf);
 237
 238         mutex_lock(&mvm->mutex);
 239
 240         for (i = 0; i < IWL_MVM_STATION_COUNT; i++) {
 241                 pos += scnprintf(buf + pos, bufsz - pos, "%.2d: ", i);
 242                 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
 243                                                 lockdep_is_held(&mvm->mutex));
 244                 if (!sta)
 245                         pos += scnprintf(buf + pos, bufsz - pos, "N/A\n");
 246                 else if (IS_ERR(sta))
 247                         pos += scnprintf(buf + pos, bufsz - pos, "%ld\n",
 248                                          PTR_ERR(sta));
 249                 else
 250                         pos += scnprintf(buf + pos, bufsz - pos, "%pM\n",
 251                                          sta->addr);
 252         }
 253
 254         mutex_unlock(&mvm->mutex);
 255
 256         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 257 }
 258
 259 static ssize_t iwl_dbgfs_disable_power_off_read(struct file *file,
 260                                                 char __user *user_buf,
 261                                                 size_t count, loff_t *ppos)
 262 {
 263         struct iwl_mvm *mvm = file->private_data;
 264         char buf[64];
 265         int bufsz = sizeof(buf);
 266         int pos = 0;
 267
 268         pos += scnprintf(buf+pos, bufsz-pos, "disable_power_off_d0=%d\n",
 269                          mvm->disable_power_off);
 270         pos += scnprintf(buf+pos, bufsz-pos, "disable_power_off_d3=%d\n",
 271                          mvm->disable_power_off_d3);
 272
 273         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 274 }
 275
 276 static ssize_t iwl_dbgfs_disable_power_off_write(struct iwl_mvm *mvm, char *buf,
 277                                                  size_t count, loff_t *ppos)
 278 {
 279         int ret, val;
 280
 281         if (!mvm->ucode_loaded)
 282                 return -EIO;
 283
 284         if (!strncmp("disable_power_off_d0=", buf, 21)) {
 285                 if (sscanf(buf + 21, "%d", &val) != 1)
 286                         return -EINVAL;
 287                 mvm->disable_power_off = val;
 288         } else if (!strncmp("disable_power_off_d3=", buf, 21)) {
 289                 if (sscanf(buf + 21, "%d", &val) != 1)
 290                         return -EINVAL;
 291                 mvm->disable_power_off_d3 = val;
 292         } else {
 293                 return -EINVAL;
 294         }
 295
 296         mutex_lock(&mvm->mutex);
 297         ret = iwl_mvm_power_update_device(mvm);
 298         mutex_unlock(&mvm->mutex);
 299
 300         return ret ?: count;
 301 }
 302
 303 #define BT_MBOX_MSG(_notif, _num, _field)                                    \
 304         ((le32_to_cpu((_notif)->mbox_msg[(_num)]) & BT_MBOX##_num##_##_field)\
 305         >> BT_MBOX##_num##_##_field##_POS)
 306
 307
 308 #define BT_MBOX_PRINT(_num, _field, _end)                                   \
 309                         pos += scnprintf(buf + pos, bufsz - pos,            \
 310                                          "\t%s: %d%s",                      \
 311                                          #_field,                           \
 312                                          BT_MBOX_MSG(notif, _num, _field),  \
 313                                          true ? "\n" : ", ");
 314
 315 static ssize_t iwl_dbgfs_bt_notif_read(struct file *file, char __user *user_buf,
 316                                        size_t count, loff_t *ppos)
 317 {
 318         struct iwl_mvm *mvm = file->private_data;
 319         struct iwl_bt_coex_profile_notif *notif = &mvm->last_bt_notif;
 320         char *buf;
 321         int ret, pos = 0, bufsz = sizeof(char) * 1024;
 322
 323         buf = kmalloc(bufsz, GFP_KERNEL);
 324         if (!buf)
 325                 return -ENOMEM;
 326
 327         mutex_lock(&mvm->mutex);
 328
 329         pos += scnprintf(buf+pos, bufsz-pos, "MBOX dw0:\n");
 330
 331         BT_MBOX_PRINT(0, LE_SLAVE_LAT, false);
 332         BT_MBOX_PRINT(0, LE_PROF1, false);
 333         BT_MBOX_PRINT(0, LE_PROF2, false);
 334         BT_MBOX_PRINT(0, LE_PROF_OTHER, false);
 335         BT_MBOX_PRINT(0, CHL_SEQ_N, false);
 336         BT_MBOX_PRINT(0, INBAND_S, false);
 337         BT_MBOX_PRINT(0, LE_MIN_RSSI, false);
 338         BT_MBOX_PRINT(0, LE_SCAN, false);
 339         BT_MBOX_PRINT(0, LE_ADV, false);
 340         BT_MBOX_PRINT(0, LE_MAX_TX_POWER, false);
 341         BT_MBOX_PRINT(0, OPEN_CON_1, true);
 342
 343         pos += scnprintf(buf+pos, bufsz-pos, "MBOX dw1:\n");
 344
 345         BT_MBOX_PRINT(1, BR_MAX_TX_POWER, false);
 346         BT_MBOX_PRINT(1, IP_SR, false);
 347         BT_MBOX_PRINT(1, LE_MSTR, false);
 348         BT_MBOX_PRINT(1, AGGR_TRFC_LD, false);
 349         BT_MBOX_PRINT(1, MSG_TYPE, false);
 350         BT_MBOX_PRINT(1, SSN, true);
 351
 352         pos += scnprintf(buf+pos, bufsz-pos, "MBOX dw2:\n");
 353
 354         BT_MBOX_PRINT(2, SNIFF_ACT, false);
 355         BT_MBOX_PRINT(2, PAG, false);
 356         BT_MBOX_PRINT(2, INQUIRY, false);
 357         BT_MBOX_PRINT(2, CONN, false);
 358         BT_MBOX_PRINT(2, SNIFF_INTERVAL, false);
 359         BT_MBOX_PRINT(2, DISC, false);
 360         BT_MBOX_PRINT(2, SCO_TX_ACT, false);
 361         BT_MBOX_PRINT(2, SCO_RX_ACT, false);
 362         BT_MBOX_PRINT(2, ESCO_RE_TX, false);
 363         BT_MBOX_PRINT(2, SCO_DURATION, true);
 364
 365         pos += scnprintf(buf+pos, bufsz-pos, "MBOX dw3:\n");
 366
 367         BT_MBOX_PRINT(3, SCO_STATE, false);
 368         BT_MBOX_PRINT(3, SNIFF_STATE, false);
 369         BT_MBOX_PRINT(3, A2DP_STATE, false);
 370         BT_MBOX_PRINT(3, ACL_STATE, false);
 371         BT_MBOX_PRINT(3, MSTR_STATE, false);
 372         BT_MBOX_PRINT(3, OBX_STATE, false);
 373         BT_MBOX_PRINT(3, OPEN_CON_2, false);
 374         BT_MBOX_PRINT(3, TRAFFIC_LOAD, false);
 375         BT_MBOX_PRINT(3, CHL_SEQN_LSB, false);
 376         BT_MBOX_PRINT(3, INBAND_P, false);
 377         BT_MBOX_PRINT(3, MSG_TYPE_2, false);
 378         BT_MBOX_PRINT(3, SSN_2, false);
 379         BT_MBOX_PRINT(3, UPDATE_REQUEST, true);
 380
 381         pos += scnprintf(buf+pos, bufsz-pos, "bt_ci_compliance = %d\n",
 382                          notif->bt_ci_compliance);
 383         pos += scnprintf(buf+pos, bufsz-pos, "primary_ch_lut = %d\n",
 384                          le32_to_cpu(notif->primary_ch_lut));
 385         pos += scnprintf(buf+pos, bufsz-pos, "secondary_ch_lut = %d\n",
 386                          le32_to_cpu(notif->secondary_ch_lut));
 387         pos += scnprintf(buf+pos, bufsz-pos, "bt_activity_grading = %d\n",
 388                          le32_to_cpu(notif->bt_activity_grading));
 389         pos += scnprintf(buf+pos, bufsz-pos,
 390                          "antenna isolation = %d CORUN LUT index = %d\n",
 391                          mvm->last_ant_isol, mvm->last_corun_lut);
 392
 393         mutex_unlock(&mvm->mutex);
 394
 395         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 396         kfree(buf);
 397
 398         return ret;
 399 }
 400 #undef BT_MBOX_PRINT
 401
 402 static ssize_t iwl_dbgfs_bt_cmd_read(struct file *file, char __user *user_buf,
 403                                      size_t count, loff_t *ppos)
 404 {
 405         struct iwl_mvm *mvm = file->private_data;
 406         struct iwl_bt_coex_ci_cmd *cmd = &mvm->last_bt_ci_cmd;
 407         char buf[256];
 408         int bufsz = sizeof(buf);
 409         int pos = 0;
 410
 411         mutex_lock(&mvm->mutex);
 412
 413         pos += scnprintf(buf+pos, bufsz-pos, "Channel inhibition CMD\n");
 414         pos += scnprintf(buf+pos, bufsz-pos,
 415                        "\tPrimary Channel Bitmap 0x%016llx\n",
 416                        le64_to_cpu(cmd->bt_primary_ci));
 417         pos += scnprintf(buf+pos, bufsz-pos,
 418                        "\tSecondary Channel Bitmap 0x%016llx\n",
 419                        le64_to_cpu(cmd->bt_secondary_ci));
 420
 421         pos += scnprintf(buf+pos, bufsz-pos, "BT Configuration CMD\n");
 422         pos += scnprintf(buf+pos, bufsz-pos, "\tACK Kill Mask 0x%08x\n",
 423                          iwl_bt_ack_kill_msk[mvm->bt_kill_msk]);
 424         pos += scnprintf(buf+pos, bufsz-pos, "\tCTS Kill Mask 0x%08x\n",
 425                          iwl_bt_cts_kill_msk[mvm->bt_kill_msk]);
 426
 427         mutex_unlock(&mvm->mutex);
 428
 429         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 430 }
 431
 432 static ssize_t
 433 iwl_dbgfs_bt_tx_prio_write(struct iwl_mvm *mvm, char *buf,
 434                            size_t count, loff_t *ppos)
 435 {
 436         u32 bt_tx_prio;
 437
 438         if (sscanf(buf, "%u", &bt_tx_prio) != 1)
 439                 return -EINVAL;
 440         if (bt_tx_prio > 4)
 441                 return -EINVAL;
 442
 443         mvm->bt_tx_prio = bt_tx_prio;
 444
 445         return count;
 446 }
 447
 448 static ssize_t
 449 iwl_dbgfs_bt_force_ant_write(struct iwl_mvm *mvm, char *buf,
 450                              size_t count, loff_t *ppos)
 451 {
 452         static const char * const modes_str[BT_FORCE_ANT_MAX] = {
 453                 [BT_FORCE_ANT_DIS] = "dis",
 454                 [BT_FORCE_ANT_AUTO] = "auto",
 455                 [BT_FORCE_ANT_BT] = "bt",
 456                 [BT_FORCE_ANT_WIFI] = "wifi",
 457         };
 458         int ret, bt_force_ant_mode;
 459
 460         for (bt_force_ant_mode = 0;
 461              bt_force_ant_mode < ARRAY_SIZE(modes_str);
 462              bt_force_ant_mode++) {
 463                 if (!strcmp(buf, modes_str[bt_force_ant_mode]))
 464                         break;
 465         }
 466
 467         if (bt_force_ant_mode >= ARRAY_SIZE(modes_str))
 468                 return -EINVAL;
 469
 470         ret = 0;
 471         mutex_lock(&mvm->mutex);
 472         if (mvm->bt_force_ant_mode == bt_force_ant_mode)
 473                 goto out;
 474
 475         mvm->bt_force_ant_mode = bt_force_ant_mode;
 476         IWL_DEBUG_COEX(mvm, "Force mode: %s\n",
 477                        modes_str[mvm->bt_force_ant_mode]);
 478         ret = iwl_send_bt_init_conf(mvm);
 479
 480 out:
 481         mutex_unlock(&mvm->mutex);
 482         return ret ?: count;
 483 }
 484
 485 #define PRINT_STATS_LE32(_str, _val)                                    \
 486                          pos += scnprintf(buf + pos, bufsz - pos,       \
 487                                           fmt_table, _str,              \
 488                                           le32_to_cpu(_val))
 489
 490 static ssize_t iwl_dbgfs_fw_rx_stats_read(struct file *file,
 491                                           char __user *user_buf, size_t count,
 492                                           loff_t *ppos)
 493 {
 494         struct iwl_mvm *mvm = file->private_data;
 495         static const char *fmt_table = "\t%-30s %10u\n";
 496         static const char *fmt_header = "%-32s\n";
 497         int pos = 0;
 498         char *buf;
 499         int ret;
 500         /* 43 is the size of each data line, 33 is the size of each header */
 501         size_t bufsz =
 502                 ((sizeof(struct mvm_statistics_rx) / sizeof(__le32)) * 43) +
 503                 (4 * 33) + 1;
 504
 505         struct mvm_statistics_rx_phy *ofdm;
 506         struct mvm_statistics_rx_phy *cck;
 507         struct mvm_statistics_rx_non_phy *general;
 508         struct mvm_statistics_rx_ht_phy *ht;
 509
 510         buf = kzalloc(bufsz, GFP_KERNEL);
 511         if (!buf)
 512                 return -ENOMEM;
 513
 514         mutex_lock(&mvm->mutex);
 515
 516         ofdm = &mvm->rx_stats.ofdm;
 517         cck = &mvm->rx_stats.cck;
 518         general = &mvm->rx_stats.general;
 519         ht = &mvm->rx_stats.ofdm_ht;
 520
 521         pos += scnprintf(buf + pos, bufsz - pos, fmt_header,
 522                          "Statistics_Rx - OFDM");
 523         PRINT_STATS_LE32("ina_cnt", ofdm->ina_cnt);
 524         PRINT_STATS_LE32("fina_cnt", ofdm->fina_cnt);
 525         PRINT_STATS_LE32("plcp_err", ofdm->plcp_err);
 526         PRINT_STATS_LE32("crc32_err", ofdm->crc32_err);
 527         PRINT_STATS_LE32("overrun_err", ofdm->overrun_err);
 528         PRINT_STATS_LE32("early_overrun_err", ofdm->early_overrun_err);
 529         PRINT_STATS_LE32("crc32_good", ofdm->crc32_good);
 530         PRINT_STATS_LE32("false_alarm_cnt", ofdm->false_alarm_cnt);
 531         PRINT_STATS_LE32("fina_sync_err_cnt", ofdm->fina_sync_err_cnt);
 532         PRINT_STATS_LE32("sfd_timeout", ofdm->sfd_timeout);
 533         PRINT_STATS_LE32("fina_timeout", ofdm->fina_timeout);
 534         PRINT_STATS_LE32("unresponded_rts", ofdm->unresponded_rts);
 535         PRINT_STATS_LE32("rxe_frame_lmt_overrun",
 536                          ofdm->rxe_frame_limit_overrun);
 537         PRINT_STATS_LE32("sent_ack_cnt", ofdm->sent_ack_cnt);
 538         PRINT_STATS_LE32("sent_cts_cnt", ofdm->sent_cts_cnt);
 539         PRINT_STATS_LE32("sent_ba_rsp_cnt", ofdm->sent_ba_rsp_cnt);
 540         PRINT_STATS_LE32("dsp_self_kill", ofdm->dsp_self_kill);
 541         PRINT_STATS_LE32("mh_format_err", ofdm->mh_format_err);
 542         PRINT_STATS_LE32("re_acq_main_rssi_sum", ofdm->re_acq_main_rssi_sum);
 543         PRINT_STATS_LE32("reserved", ofdm->reserved);
 544
 545         pos += scnprintf(buf + pos, bufsz - pos, fmt_header,
 546                          "Statistics_Rx - CCK");
 547         PRINT_STATS_LE32("ina_cnt", cck->ina_cnt);
 548         PRINT_STATS_LE32("fina_cnt", cck->fina_cnt);
 549         PRINT_STATS_LE32("plcp_err", cck->plcp_err);
 550         PRINT_STATS_LE32("crc32_err", cck->crc32_err);
 551         PRINT_STATS_LE32("overrun_err", cck->overrun_err);
 552         PRINT_STATS_LE32("early_overrun_err", cck->early_overrun_err);
 553         PRINT_STATS_LE32("crc32_good", cck->crc32_good);
 554         PRINT_STATS_LE32("false_alarm_cnt", cck->false_alarm_cnt);
 555         PRINT_STATS_LE32("fina_sync_err_cnt", cck->fina_sync_err_cnt);
 556         PRINT_STATS_LE32("sfd_timeout", cck->sfd_timeout);
 557         PRINT_STATS_LE32("fina_timeout", cck->fina_timeout);
 558         PRINT_STATS_LE32("unresponded_rts", cck->unresponded_rts);
 559         PRINT_STATS_LE32("rxe_frame_lmt_overrun",
 560                          cck->rxe_frame_limit_overrun);
 561         PRINT_STATS_LE32("sent_ack_cnt", cck->sent_ack_cnt);
 562         PRINT_STATS_LE32("sent_cts_cnt", cck->sent_cts_cnt);
 563         PRINT_STATS_LE32("sent_ba_rsp_cnt", cck->sent_ba_rsp_cnt);
 564         PRINT_STATS_LE32("dsp_self_kill", cck->dsp_self_kill);
 565         PRINT_STATS_LE32("mh_format_err", cck->mh_format_err);
 566         PRINT_STATS_LE32("re_acq_main_rssi_sum", cck->re_acq_main_rssi_sum);
 567         PRINT_STATS_LE32("reserved", cck->reserved);
 568
 569         pos += scnprintf(buf + pos, bufsz - pos, fmt_header,
 570                          "Statistics_Rx - GENERAL");
 571         PRINT_STATS_LE32("bogus_cts", general->bogus_cts);
 572         PRINT_STATS_LE32("bogus_ack", general->bogus_ack);
 573         PRINT_STATS_LE32("non_bssid_frames", general->non_bssid_frames);
 574         PRINT_STATS_LE32("filtered_frames", general->filtered_frames);
 575         PRINT_STATS_LE32("non_channel_beacons", general->non_channel_beacons);
 576         PRINT_STATS_LE32("channel_beacons", general->channel_beacons);
 577         PRINT_STATS_LE32("num_missed_bcon", general->num_missed_bcon);
 578         PRINT_STATS_LE32("adc_rx_saturation_time",
 579                          general->adc_rx_saturation_time);
 580         PRINT_STATS_LE32("ina_detection_search_time",
 581                          general->ina_detection_search_time);
 582         PRINT_STATS_LE32("beacon_silence_rssi_a",
 583                          general->beacon_silence_rssi_a);
 584         PRINT_STATS_LE32("beacon_silence_rssi_b",
 585                          general->beacon_silence_rssi_b);
 586         PRINT_STATS_LE32("beacon_silence_rssi_c",
 587                          general->beacon_silence_rssi_c);
 588         PRINT_STATS_LE32("interference_data_flag",
 589                          general->interference_data_flag);
 590         PRINT_STATS_LE32("channel_load", general->channel_load);
 591         PRINT_STATS_LE32("dsp_false_alarms", general->dsp_false_alarms);
 592         PRINT_STATS_LE32("beacon_rssi_a", general->beacon_rssi_a);
 593         PRINT_STATS_LE32("beacon_rssi_b", general->beacon_rssi_b);
 594         PRINT_STATS_LE32("beacon_rssi_c", general->beacon_rssi_c);
 595         PRINT_STATS_LE32("beacon_energy_a", general->beacon_energy_a);
 596         PRINT_STATS_LE32("beacon_energy_b", general->beacon_energy_b);
 597         PRINT_STATS_LE32("beacon_energy_c", general->beacon_energy_c);
 598         PRINT_STATS_LE32("num_bt_kills", general->num_bt_kills);
 599         PRINT_STATS_LE32("mac_id", general->mac_id);
 600         PRINT_STATS_LE32("directed_data_mpdu", general->directed_data_mpdu);
 601
 602         pos += scnprintf(buf + pos, bufsz - pos, fmt_header,
 603                          "Statistics_Rx - HT");
 604         PRINT_STATS_LE32("plcp_err", ht->plcp_err);
 605         PRINT_STATS_LE32("overrun_err", ht->overrun_err);
 606         PRINT_STATS_LE32("early_overrun_err", ht->early_overrun_err);
 607         PRINT_STATS_LE32("crc32_good", ht->crc32_good);
 608         PRINT_STATS_LE32("crc32_err", ht->crc32_err);
 609         PRINT_STATS_LE32("mh_format_err", ht->mh_format_err);
 610         PRINT_STATS_LE32("agg_crc32_good", ht->agg_crc32_good);
 611         PRINT_STATS_LE32("agg_mpdu_cnt", ht->agg_mpdu_cnt);
 612         PRINT_STATS_LE32("agg_cnt", ht->agg_cnt);
 613         PRINT_STATS_LE32("unsupport_mcs", ht->unsupport_mcs);
 614
 615         mutex_unlock(&mvm->mutex);
 616
 617         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 618         kfree(buf);
 619
 620         return ret;
 621 }
 622 #undef PRINT_STAT_LE32
 623
 624 static ssize_t iwl_dbgfs_frame_stats_read(struct iwl_mvm *mvm,
 625                                           char __user *user_buf, size_t count,
 626                                           loff_t *ppos,
 627                                           struct iwl_mvm_frame_stats *stats)
 628 {
 629         char *buff, *pos, *endpos;
 630         int idx, i;
 631         int ret;
 632         static const size_t bufsz = 1024;
 633
 634         buff = kmalloc(bufsz, GFP_KERNEL);
 635         if (!buff)
 636                 return -ENOMEM;
 637
 638         spin_lock_bh(&mvm->drv_stats_lock);
 639
 640         pos = buff;
 641         endpos = pos + bufsz;
 642
 643         pos += scnprintf(pos, endpos - pos,
 644                          "Legacy/HT/VHT\t:\t%d/%d/%d\n",
 645                          stats->legacy_frames,
 646                          stats->ht_frames,
 647                          stats->vht_frames);
 648         pos += scnprintf(pos, endpos - pos, "20/40/80\t:\t%d/%d/%d\n",
 649                          stats->bw_20_frames,
 650                          stats->bw_40_frames,
 651                          stats->bw_80_frames);
 652         pos += scnprintf(pos, endpos - pos, "NGI/SGI\t\t:\t%d/%d\n",
 653                          stats->ngi_frames,
 654                          stats->sgi_frames);
 655         pos += scnprintf(pos, endpos - pos, "SISO/MIMO2\t:\t%d/%d\n",
 656                          stats->siso_frames,
 657                          stats->mimo2_frames);
 658         pos += scnprintf(pos, endpos - pos, "FAIL/SCSS\t:\t%d/%d\n",
 659                          stats->fail_frames,
 660                          stats->success_frames);
 661         pos += scnprintf(pos, endpos - pos, "MPDUs agg\t:\t%d\n",
 662                          stats->agg_frames);
 663         pos += scnprintf(pos, endpos - pos, "A-MPDUs\t\t:\t%d\n",
 664                          stats->ampdu_count);
 665         pos += scnprintf(pos, endpos - pos, "Avg MPDUs/A-MPDU:\t%d\n",
 666                          stats->ampdu_count > 0 ?
 667                          (stats->agg_frames / stats->ampdu_count) : 0);
 668
 669         pos += scnprintf(pos, endpos - pos, "Last Rates\n");
 670
 671         idx = stats->last_frame_idx - 1;
 672         for (i = 0; i < ARRAY_SIZE(stats->last_rates); i++) {
 673                 idx = (idx + 1) % ARRAY_SIZE(stats->last_rates);
 674                 if (stats->last_rates[idx] == 0)
 675                         continue;
 676                 pos += scnprintf(pos, endpos - pos, "Rate[%d]: ",
 677                                  (int)(ARRAY_SIZE(stats->last_rates) - i));
 678                 pos += rs_pretty_print_rate(pos, stats->last_rates[idx]);
 679         }
 680         spin_unlock_bh(&mvm->drv_stats_lock);
 681
 682         ret = simple_read_from_buffer(user_buf, count, ppos, buff, pos - buff);
 683         kfree(buff);
 684
 685         return ret;
 686 }
 687
 688 static ssize_t iwl_dbgfs_drv_rx_stats_read(struct file *file,
 689                                            char __user *user_buf, size_t count,
 690                                            loff_t *ppos)
 691 {
 692         struct iwl_mvm *mvm = file->private_data;
 693
 694         return iwl_dbgfs_frame_stats_read(mvm, user_buf, count, ppos,
 695                                           &mvm->drv_rx_stats);
 696 }
 697
 698 static ssize_t iwl_dbgfs_fw_restart_write(struct iwl_mvm *mvm, char *buf,
 699                                           size_t count, loff_t *ppos)
 700 {
 701         int ret;
 702
 703         mutex_lock(&mvm->mutex);
 704
 705         /* allow one more restart that we're provoking here */
 706         if (mvm->restart_fw >= 0)
 707                 mvm->restart_fw++;
 708
 709         /* take the return value to make compiler happy - it will fail anyway */
 710         ret = iwl_mvm_send_cmd_pdu(mvm, REPLY_ERROR, 0, 0, NULL);
 711
 712         mutex_unlock(&mvm->mutex);
 713
 714         return count;
 715 }
 716
 717 static ssize_t iwl_dbgfs_fw_nmi_write(struct iwl_mvm *mvm, char *buf,
 718                                       size_t count, loff_t *ppos)
 719 {
 720         iwl_force_nmi(mvm->trans);
 721
 722         return count;
 723 }
 724
 725 static ssize_t
 726 iwl_dbgfs_scan_ant_rxchain_read(struct file *file,
 727                                 char __user *user_buf,
 728                                 size_t count, loff_t *ppos)
 729 {
 730         struct iwl_mvm *mvm = file->private_data;
 731         int pos = 0;
 732         char buf[32];
 733         const size_t bufsz = sizeof(buf);
 734
 735         /* print which antennas were set for the scan command by the user */
 736         pos += scnprintf(buf + pos, bufsz - pos, "Antennas for scan: ");
 737         if (mvm->scan_rx_ant & ANT_A)
 738                 pos += scnprintf(buf + pos, bufsz - pos, "A");
 739         if (mvm->scan_rx_ant & ANT_B)
 740                 pos += scnprintf(buf + pos, bufsz - pos, "B");
 741         if (mvm->scan_rx_ant & ANT_C)
 742                 pos += scnprintf(buf + pos, bufsz - pos, "C");
 743         pos += scnprintf(buf + pos, bufsz - pos, " (%hhx)\n", mvm->scan_rx_ant);
 744
 745         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 746 }
 747
 748 static ssize_t
 749 iwl_dbgfs_scan_ant_rxchain_write(struct iwl_mvm *mvm, char *buf,
 750                                  size_t count, loff_t *ppos)
 751 {
 752         u8 scan_rx_ant;
 753
 754         if (sscanf(buf, "%hhx", &scan_rx_ant) != 1)
 755                 return -EINVAL;
 756         if (scan_rx_ant > ANT_ABC)
 757                 return -EINVAL;
 758         if (scan_rx_ant & ~mvm->fw->valid_rx_ant)
 759                 return -EINVAL;
 760
 761         mvm->scan_rx_ant = scan_rx_ant;
 762
 763         return count;
 764 }
 765
 766 #define ADD_TEXT(...) pos += scnprintf(buf + pos, bufsz - pos, __VA_ARGS__)
 767 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
 768 static ssize_t iwl_dbgfs_bcast_filters_read(struct file *file,
 769                                             char __user *user_buf,
 770                                             size_t count, loff_t *ppos)
 771 {
 772         struct iwl_mvm *mvm = file->private_data;
 773         struct iwl_bcast_filter_cmd cmd;
 774         const struct iwl_fw_bcast_filter *filter;
 775         char *buf;
 776         int bufsz = 1024;
 777         int i, j, pos = 0;
 778         ssize_t ret;
 779
 780         buf = kzalloc(bufsz, GFP_KERNEL);
 781         if (!buf)
 782                 return -ENOMEM;
 783
 784         mutex_lock(&mvm->mutex);
 785         if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd)) {
 786                 ADD_TEXT("None\n");
 787                 mutex_unlock(&mvm->mutex);
 788                 goto out;
 789         }
 790         mutex_unlock(&mvm->mutex);
 791
 792         for (i = 0; cmd.filters[i].attrs[0].mask; i++) {
 793                 filter = &cmd.filters[i];
 794
 795                 ADD_TEXT("Filter [%d]:\n", i);
 796                 ADD_TEXT("\tDiscard=%d\n", filter->discard);
 797                 ADD_TEXT("\tFrame Type: %s\n",
 798                          filter->frame_type ? "IPv4" : "Generic");
 799
 800                 for (j = 0; j < ARRAY_SIZE(filter->attrs); j++) {
 801                         const struct iwl_fw_bcast_filter_attr *attr;
 802
 803                         attr = &filter->attrs[j];
 804                         if (!attr->mask)
 805                                 break;
 806
 807                         ADD_TEXT("\tAttr [%d]: offset=%d (from %s), mask=0x%x, value=0x%x reserved=0x%x\n",
 808                                  j, attr->offset,
 809                                  attr->offset_type ? "IP End" :
 810                                                      "Payload Start",
 811                                  be32_to_cpu(attr->mask),
 812                                  be32_to_cpu(attr->val),
 813                                  le16_to_cpu(attr->reserved1));
 814                 }
 815         }
 816 out:
 817         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 818         kfree(buf);
 819         return ret;
 820 }
 821
 822 static ssize_t iwl_dbgfs_bcast_filters_write(struct iwl_mvm *mvm, char *buf,
 823                                              size_t count, loff_t *ppos)
 824 {
 825         int pos, next_pos;
 826         struct iwl_fw_bcast_filter filter = {};
 827         struct iwl_bcast_filter_cmd cmd;
 828         u32 filter_id, attr_id, mask, value;
 829         int err = 0;
 830
 831         if (sscanf(buf, "%d %hhi %hhi %n", &filter_id, &filter.discard,
 832                    &filter.frame_type, &pos) != 3)
 833                 return -EINVAL;
 834
 835         if (filter_id >= ARRAY_SIZE(mvm->dbgfs_bcast_filtering.cmd.filters) ||
 836             filter.frame_type > BCAST_FILTER_FRAME_TYPE_IPV4)
 837                 return -EINVAL;
 838
 839         for (attr_id = 0; attr_id < ARRAY_SIZE(filter.attrs);
 840              attr_id++) {
 841                 struct iwl_fw_bcast_filter_attr *attr =
 842                                 &filter.attrs[attr_id];
 843
 844                 if (pos >= count)
 845                         break;
 846
 847                 if (sscanf(&buf[pos], "%hhi %hhi %i %i %n",
 848                            &attr->offset, &attr->offset_type,
 849                            &mask, &value, &next_pos) != 4)
 850                         return -EINVAL;
 851
 852                 attr->mask = cpu_to_be32(mask);
 853                 attr->val = cpu_to_be32(value);
 854                 if (mask)
 855                         filter.num_attrs++;
 856
 857                 pos += next_pos;
 858         }
 859
 860         mutex_lock(&mvm->mutex);
 861         memcpy(&mvm->dbgfs_bcast_filtering.cmd.filters[filter_id],
 862                &filter, sizeof(filter));
 863
 864         /* send updated bcast filtering configuration */
 865         if (mvm->dbgfs_bcast_filtering.override &&
 866             iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
 867                 err = iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0,
 868                                            sizeof(cmd), &cmd);
 869         mutex_unlock(&mvm->mutex);
 870
 871         return err ?: count;
 872 }
 873
 874 static ssize_t iwl_dbgfs_bcast_filters_macs_read(struct file *file,
 875                                                  char __user *user_buf,
 876                                                  size_t count, loff_t *ppos)
 877 {
 878         struct iwl_mvm *mvm = file->private_data;
 879         struct iwl_bcast_filter_cmd cmd;
 880         char *buf;
 881         int bufsz = 1024;
 882         int i, pos = 0;
 883         ssize_t ret;
 884
 885         buf = kzalloc(bufsz, GFP_KERNEL);
 886         if (!buf)
 887                 return -ENOMEM;
 888
 889         mutex_lock(&mvm->mutex);
 890         if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd)) {
 891                 ADD_TEXT("None\n");
 892                 mutex_unlock(&mvm->mutex);
 893                 goto out;
 894         }
 895         mutex_unlock(&mvm->mutex);
 896
 897         for (i = 0; i < ARRAY_SIZE(cmd.macs); i++) {
 898                 const struct iwl_fw_bcast_mac *mac = &cmd.macs[i];
 899
 900                 ADD_TEXT("Mac [%d]: discard=%d attached_filters=0x%x\n",
 901                          i, mac->default_discard, mac->attached_filters);
 902         }
 903 out:
 904         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 905         kfree(buf);
 906         return ret;
 907 }
 908
 909 static ssize_t iwl_dbgfs_bcast_filters_macs_write(struct iwl_mvm *mvm,
 910                                                   char *buf, size_t count,
 911                                                   loff_t *ppos)
 912 {
 913         struct iwl_bcast_filter_cmd cmd;
 914         struct iwl_fw_bcast_mac mac = {};
 915         u32 mac_id, attached_filters;
 916         int err = 0;
 917
 918         if (!mvm->bcast_filters)
 919                 return -ENOENT;
 920
 921         if (sscanf(buf, "%d %hhi %i", &mac_id, &mac.default_discard,
 922                    &attached_filters) != 3)
 923                 return -EINVAL;
 924
 925         if (mac_id >= ARRAY_SIZE(cmd.macs) ||
 926             mac.default_discard > 1 ||
 927             attached_filters >= BIT(ARRAY_SIZE(cmd.filters)))
 928                 return -EINVAL;
 929
 930         mac.attached_filters = cpu_to_le16(attached_filters);
 931
 932         mutex_lock(&mvm->mutex);
 933         memcpy(&mvm->dbgfs_bcast_filtering.cmd.macs[mac_id],
 934                &mac, sizeof(mac));
 935
 936         /* send updated bcast filtering configuration */
 937         if (mvm->dbgfs_bcast_filtering.override &&
 938             iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
 939                 err = iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0,
 940                                            sizeof(cmd), &cmd);
 941         mutex_unlock(&mvm->mutex);
 942
 943         return err ?: count;
 944 }
 945 #endif
 946
 947 #ifdef CONFIG_PM_SLEEP
 948 static ssize_t iwl_dbgfs_d3_sram_write(struct iwl_mvm *mvm, char *buf,
 949                                        size_t count, loff_t *ppos)
 950 {
 951         int store;
 952
 953         if (sscanf(buf, "%d", &store) != 1)
 954                 return -EINVAL;
 955
 956         mvm->store_d3_resume_sram = store;
 957
 958         return count;
 959 }
 960
 961 static ssize_t iwl_dbgfs_d3_sram_read(struct file *file, char __user *user_buf,
 962                                       size_t count, loff_t *ppos)
 963 {
 964         struct iwl_mvm *mvm = file->private_data;
 965         const struct fw_img *img;
 966         int ofs, len, pos = 0;
 967         size_t bufsz, ret;
 968         char *buf;
 969         u8 *ptr = mvm->d3_resume_sram;
 970
 971         img = &mvm->fw->img[IWL_UCODE_WOWLAN];
 972         len = img->sec[IWL_UCODE_SECTION_DATA].len;
 973
 974         bufsz = len * 4 + 256;
 975         buf = kzalloc(bufsz, GFP_KERNEL);
 976         if (!buf)
 977                 return -ENOMEM;
 978
 979         pos += scnprintf(buf, bufsz, "D3 SRAM capture: %sabled\n",
 980                          mvm->store_d3_resume_sram ? "en" : "dis");
 981
 982         if (ptr) {
 983                 for (ofs = 0; ofs < len; ofs += 16) {
 984                         pos += scnprintf(buf + pos, bufsz - pos,
 985                                          "0x%.4x ", ofs);
 986                         hex_dump_to_buffer(ptr + ofs, 16, 16, 1, buf + pos,
 987                                            bufsz - pos, false);
 988                         pos += strlen(buf + pos);
 989                         if (bufsz - pos > 0)
 990                                 buf[pos++] = '\n';
 991                 }
 992         } else {
 993                 pos += scnprintf(buf + pos, bufsz - pos,
 994                                  "(no data captured)\n");
 995         }
 996
 997         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 998
 999         kfree(buf);
1000
1001         return ret;
1002 }
1003 #endif
1004
1005 #define PRINT_MVM_REF(ref) do {                                 \
1006         if (test_bit(ref, mvm->ref_bitmap))                     \
1007                 pos += scnprintf(buf + pos, bufsz - pos,        \
1008                                  "\t(0x%lx) %s\n",              \
1009                                  BIT(ref), #ref);               \
1010 } while (0)
1011
1012 static ssize_t iwl_dbgfs_d0i3_refs_read(struct file *file,
1013                                         char __user *user_buf,
1014                                         size_t count, loff_t *ppos)
1015 {
1016         struct iwl_mvm *mvm = file->private_data;
1017         int pos = 0;
1018         char buf[256];
1019         const size_t bufsz = sizeof(buf);
1020
1021         pos += scnprintf(buf + pos, bufsz - pos, "taken mvm refs: 0x%lx\n",
1022                          mvm->ref_bitmap[0]);
1023
1024         PRINT_MVM_REF(IWL_MVM_REF_UCODE_DOWN);
1025         PRINT_MVM_REF(IWL_MVM_REF_SCAN);
1026         PRINT_MVM_REF(IWL_MVM_REF_ROC);
1027         PRINT_MVM_REF(IWL_MVM_REF_P2P_CLIENT);
1028         PRINT_MVM_REF(IWL_MVM_REF_AP_IBSS);
1029         PRINT_MVM_REF(IWL_MVM_REF_USER);
1030         PRINT_MVM_REF(IWL_MVM_REF_EXIT_WORK);
1031
1032         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
1033 }
1034
1035 static ssize_t iwl_dbgfs_d0i3_refs_write(struct iwl_mvm *mvm, char *buf,
1036                                          size_t count, loff_t *ppos)
1037 {
1038         unsigned long value;
1039         int ret;
1040         bool taken;
1041
1042         ret = kstrtoul(buf, 10, &value);
1043         if (ret < 0)
1044                 return ret;
1045
1046         mutex_lock(&mvm->mutex);
1047
1048         taken = test_bit(IWL_MVM_REF_USER, mvm->ref_bitmap);
1049         if (value == 1 && !taken)
1050                 iwl_mvm_ref(mvm, IWL_MVM_REF_USER);
1051         else if (value == 0 && taken)
1052                 iwl_mvm_unref(mvm, IWL_MVM_REF_USER);
1053         else
1054                 ret = -EINVAL;
1055
1056         mutex_unlock(&mvm->mutex);
1057
1058         if (ret < 0)
1059                 return ret;
1060         return count;
1061 }
1062
1063 #define MVM_DEBUGFS_WRITE_FILE_OPS(name, bufsz) \
1064         _MVM_DEBUGFS_WRITE_FILE_OPS(name, bufsz, struct iwl_mvm)
1065 #define MVM_DEBUGFS_READ_WRITE_FILE_OPS(name, bufsz) \
1066         _MVM_DEBUGFS_READ_WRITE_FILE_OPS(name, bufsz, struct iwl_mvm)
1067 #define MVM_DEBUGFS_ADD_FILE_ALIAS(alias, name, parent, mode) do {      \
1068                 if (!debugfs_create_file(alias, mode, parent, mvm,      \
1069                                          &iwl_dbgfs_##name##_ops))      \
1070                         goto err;                                       \
1071         } while (0)
1072 #define MVM_DEBUGFS_ADD_FILE(name, parent, mode) \
1073         MVM_DEBUGFS_ADD_FILE_ALIAS(#name, name, parent, mode)
1074
1075 static ssize_t
1076 iwl_dbgfs_prph_reg_read(struct file *file,
1077                         char __user *user_buf,
1078                         size_t count, loff_t *ppos)
1079 {
1080         struct iwl_mvm *mvm = file->private_data;
1081         int pos = 0;
1082         char buf[32];
1083         const size_t bufsz = sizeof(buf);
1084
1085         if (!mvm->dbgfs_prph_reg_addr)
1086                 return -EINVAL;
1087
1088         pos += scnprintf(buf + pos, bufsz - pos, "Reg 0x%x: (0x%x)\n",
1089                 mvm->dbgfs_prph_reg_addr,
1090                 iwl_read_prph(mvm->trans, mvm->dbgfs_prph_reg_addr));
1091
1092         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
1093 }
1094
1095 static ssize_t
1096 iwl_dbgfs_prph_reg_write(struct iwl_mvm *mvm, char *buf,
1097                          size_t count, loff_t *ppos)
1098 {
1099         u8 args;
1100         u32 value;
1101
1102         args = sscanf(buf, "%i %i", &mvm->dbgfs_prph_reg_addr, &value);
1103         /* if we only want to set the reg address - nothing more to do */
1104         if (args == 1)
1105                 goto out;
1106
1107         /* otherwise, make sure we have both address and value */
1108         if (args != 2)
1109                 return -EINVAL;
1110
1111         iwl_write_prph(mvm->trans, mvm->dbgfs_prph_reg_addr, value);
1112 out:
1113         return count;
1114 }
1115
1116 MVM_DEBUGFS_READ_WRITE_FILE_OPS(prph_reg, 64);
1117
1118 /* Device wide debugfs entries */
1119 MVM_DEBUGFS_WRITE_FILE_OPS(tx_flush, 16);
1120 MVM_DEBUGFS_WRITE_FILE_OPS(sta_drain, 8);
1121 MVM_DEBUGFS_READ_WRITE_FILE_OPS(sram, 64);
1122 MVM_DEBUGFS_READ_FILE_OPS(stations);
1123 MVM_DEBUGFS_READ_FILE_OPS(bt_notif);
1124 MVM_DEBUGFS_READ_FILE_OPS(bt_cmd);
1125 MVM_DEBUGFS_READ_WRITE_FILE_OPS(disable_power_off, 64);
1126 MVM_DEBUGFS_READ_FILE_OPS(fw_rx_stats);
1127 MVM_DEBUGFS_READ_FILE_OPS(drv_rx_stats);
1128 MVM_DEBUGFS_WRITE_FILE_OPS(fw_restart, 10);
1129 MVM_DEBUGFS_WRITE_FILE_OPS(fw_nmi, 10);
1130 MVM_DEBUGFS_WRITE_FILE_OPS(bt_tx_prio, 10);
1131 MVM_DEBUGFS_WRITE_FILE_OPS(bt_force_ant, 10);
1132 MVM_DEBUGFS_READ_WRITE_FILE_OPS(scan_ant_rxchain, 8);
1133 MVM_DEBUGFS_READ_WRITE_FILE_OPS(d0i3_refs, 8);
1134
1135 static const struct file_operations iwl_dbgfs_fw_error_dump_ops = {
1136         .open = iwl_dbgfs_fw_error_dump_open,
1137         .read = iwl_dbgfs_fw_error_dump_read,
1138         .release = iwl_dbgfs_fw_error_dump_release,
1139 };
1140
1141 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
1142 MVM_DEBUGFS_READ_WRITE_FILE_OPS(bcast_filters, 256);
1143 MVM_DEBUGFS_READ_WRITE_FILE_OPS(bcast_filters_macs, 256);
1144 #endif
1145
1146 #ifdef CONFIG_PM_SLEEP
1147 MVM_DEBUGFS_READ_WRITE_FILE_OPS(d3_sram, 8);
1148 #endif
1149
1150 int iwl_mvm_dbgfs_register(struct iwl_mvm *mvm, struct dentry *dbgfs_dir)
1151 {
1152         struct dentry *bcast_dir __maybe_unused;
1153         char buf[100];
1154
1155         spin_lock_init(&mvm->drv_stats_lock);
1156
1157         mvm->debugfs_dir = dbgfs_dir;
1158
1159         MVM_DEBUGFS_ADD_FILE(tx_flush, mvm->debugfs_dir, S_IWUSR);
1160         MVM_DEBUGFS_ADD_FILE(sta_drain, mvm->debugfs_dir, S_IWUSR);
1161         MVM_DEBUGFS_ADD_FILE(sram, mvm->debugfs_dir, S_IWUSR | S_IRUSR);
1162         MVM_DEBUGFS_ADD_FILE(stations, dbgfs_dir, S_IRUSR);
1163         MVM_DEBUGFS_ADD_FILE(fw_error_dump, dbgfs_dir, S_IRUSR);
1164         MVM_DEBUGFS_ADD_FILE(bt_notif, dbgfs_dir, S_IRUSR);
1165         MVM_DEBUGFS_ADD_FILE(bt_cmd, dbgfs_dir, S_IRUSR);
1166         MVM_DEBUGFS_ADD_FILE(disable_power_off, mvm->debugfs_dir,
1167                              S_IRUSR | S_IWUSR);
1168         MVM_DEBUGFS_ADD_FILE(fw_rx_stats, mvm->debugfs_dir, S_IRUSR);
1169         MVM_DEBUGFS_ADD_FILE(drv_rx_stats, mvm->debugfs_dir, S_IRUSR);
1170         MVM_DEBUGFS_ADD_FILE(fw_restart, mvm->debugfs_dir, S_IWUSR);
1171         MVM_DEBUGFS_ADD_FILE(fw_nmi, mvm->debugfs_dir, S_IWUSR);
1172         MVM_DEBUGFS_ADD_FILE(bt_tx_prio, mvm->debugfs_dir, S_IWUSR);
1173         MVM_DEBUGFS_ADD_FILE(bt_force_ant, mvm->debugfs_dir, S_IWUSR);
1174         MVM_DEBUGFS_ADD_FILE(scan_ant_rxchain, mvm->debugfs_dir,
1175                              S_IWUSR | S_IRUSR);
1176         MVM_DEBUGFS_ADD_FILE(prph_reg, mvm->debugfs_dir, S_IWUSR | S_IRUSR);
1177         MVM_DEBUGFS_ADD_FILE(d0i3_refs, mvm->debugfs_dir, S_IRUSR | S_IWUSR);
1178
1179 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
1180         if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING) {
1181                 bcast_dir = debugfs_create_dir("bcast_filtering",
1182                                                mvm->debugfs_dir);
1183                 if (!bcast_dir)
1184                         goto err;
1185
1186                 if (!debugfs_create_bool("override", S_IRUSR | S_IWUSR,
1187                                 bcast_dir,
1188                                 &mvm->dbgfs_bcast_filtering.override))
1189                         goto err;
1190
1191                 MVM_DEBUGFS_ADD_FILE_ALIAS("filters", bcast_filters,
1192                                            bcast_dir, S_IWUSR | S_IRUSR);
1193                 MVM_DEBUGFS_ADD_FILE_ALIAS("macs", bcast_filters_macs,
1194                                            bcast_dir, S_IWUSR | S_IRUSR);
1195         }
1196 #endif
1197
1198 #ifdef CONFIG_PM_SLEEP
1199         MVM_DEBUGFS_ADD_FILE(d3_sram, mvm->debugfs_dir, S_IRUSR | S_IWUSR);
1200         MVM_DEBUGFS_ADD_FILE(d3_test, mvm->debugfs_dir, S_IRUSR);
1201         if (!debugfs_create_bool("d3_wake_sysassert", S_IRUSR | S_IWUSR,
1202                                  mvm->debugfs_dir, &mvm->d3_wake_sysassert))
1203                 goto err;
1204 #endif
1205
1206         if (!debugfs_create_blob("nvm_hw", S_IRUSR,
1207                                   mvm->debugfs_dir, &mvm->nvm_hw_blob))
1208                 goto err;
1209         if (!debugfs_create_blob("nvm_sw", S_IRUSR,
1210                                   mvm->debugfs_dir, &mvm->nvm_sw_blob))
1211                 goto err;
1212         if (!debugfs_create_blob("nvm_calib", S_IRUSR,
1213                                   mvm->debugfs_dir, &mvm->nvm_calib_blob))
1214                 goto err;
1215         if (!debugfs_create_blob("nvm_prod", S_IRUSR,
1216                                   mvm->debugfs_dir, &mvm->nvm_prod_blob))
1217                 goto err;
1218
1219         /*
1220          * Create a symlink with mac80211. It will be removed when mac80211
1221          * exists (before the opmode exists which removes the target.)
1222          */
1223         snprintf(buf, 100, "../../%s/%s",
1224                  dbgfs_dir->d_parent->d_parent->d_name.name,
1225                  dbgfs_dir->d_parent->d_name.name);
1226         if (!debugfs_create_symlink("iwlwifi", mvm->hw->wiphy->debugfsdir, buf))
1227                 goto err;
1228
1229         return 0;
1230 err:
1231         IWL_ERR(mvm, "Can't create the mvm debugfs directory\n");
1232         return -ENOMEM;
1233 }