drivers/net/wireless/ath/ath10k/debug.c

   1 /*
   2  * Copyright (c) 2005-2011 Atheros Communications Inc.
   3  * Copyright (c) 2011-2013 Qualcomm Atheros, Inc.
   4  *
   5  * Permission to use, copy, modify, and/or distribute this software for any
   6  * purpose with or without fee is hereby granted, provided that the above
   7  * copyright notice and this permission notice appear in all copies.
   8  *
   9  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  10  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  11  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  12  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  13  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  14  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  15  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  16  */
  17
  18 #include <linux/module.h>
  19 #include <linux/debugfs.h>
  20
  21 #include "core.h"
  22 #include "debug.h"
  23
  24 /* ms */
  25 #define ATH10K_DEBUG_HTT_STATS_INTERVAL 1000
  26
  27 static int ath10k_printk(const char *level, const char *fmt, ...)
  28 {
  29         struct va_format vaf;
  30         va_list args;
  31         int rtn;
  32
  33         va_start(args, fmt);
  34
  35         vaf.fmt = fmt;
  36         vaf.va = &args;
  37
  38         rtn = printk("%sath10k: %pV", level, &vaf);
  39
  40         va_end(args);
  41
  42         return rtn;
  43 }
  44
  45 int ath10k_info(const char *fmt, ...)
  46 {
  47         struct va_format vaf = {
  48                 .fmt = fmt,
  49         };
  50         va_list args;
  51         int ret;
  52
  53         va_start(args, fmt);
  54         vaf.va = &args;
  55         ret = ath10k_printk(KERN_INFO, "%pV", &vaf);
  56         trace_ath10k_log_info(&vaf);
  57         va_end(args);
  58
  59         return ret;
  60 }
  61 EXPORT_SYMBOL(ath10k_info);
  62
  63 int ath10k_err(const char *fmt, ...)
  64 {
  65         struct va_format vaf = {
  66                 .fmt = fmt,
  67         };
  68         va_list args;
  69         int ret;
  70
  71         va_start(args, fmt);
  72         vaf.va = &args;
  73         ret = ath10k_printk(KERN_ERR, "%pV", &vaf);
  74         trace_ath10k_log_err(&vaf);
  75         va_end(args);
  76
  77         return ret;
  78 }
  79 EXPORT_SYMBOL(ath10k_err);
  80
  81 int ath10k_warn(const char *fmt, ...)
  82 {
  83         struct va_format vaf = {
  84                 .fmt = fmt,
  85         };
  86         va_list args;
  87         int ret = 0;
  88
  89         va_start(args, fmt);
  90         vaf.va = &args;
  91
  92         if (net_ratelimit())
  93                 ret = ath10k_printk(KERN_WARNING, "%pV", &vaf);
  94
  95         trace_ath10k_log_warn(&vaf);
  96
  97         va_end(args);
  98
  99         return ret;
 100 }
 101 EXPORT_SYMBOL(ath10k_warn);
 102
 103 #ifdef CONFIG_ATH10K_DEBUGFS
 104
 105 void ath10k_debug_read_service_map(struct ath10k *ar,
 106                                    void *service_map,
 107                                    size_t map_size)
 108 {
 109         memcpy(ar->debug.wmi_service_bitmap, service_map, map_size);
 110 }
 111
 112 static ssize_t ath10k_read_wmi_services(struct file *file,
 113                                         char __user *user_buf,
 114                                         size_t count, loff_t *ppos)
 115 {
 116         struct ath10k *ar = file->private_data;
 117         char *buf;
 118         unsigned int len = 0, buf_len = 1500;
 119         const char *status;
 120         ssize_t ret_cnt;
 121         int i;
 122
 123         buf = kzalloc(buf_len, GFP_KERNEL);
 124         if (!buf)
 125                 return -ENOMEM;
 126
 127         mutex_lock(&ar->conf_mutex);
 128
 129         if (len > buf_len)
 130                 len = buf_len;
 131
 132         for (i = 0; i < WMI_SERVICE_LAST; i++) {
 133                 if (WMI_SERVICE_IS_ENABLED(ar->debug.wmi_service_bitmap, i))
 134                         status = "enabled";
 135                 else
 136                         status = "disabled";
 137
 138                 len += scnprintf(buf + len, buf_len - len,
 139                                  "0x%02x - %20s - %s\n",
 140                                  i, wmi_service_name(i), status);
 141         }
 142
 143         ret_cnt = simple_read_from_buffer(user_buf, count, ppos, buf, len);
 144
 145         mutex_unlock(&ar->conf_mutex);
 146
 147         kfree(buf);
 148         return ret_cnt;
 149 }
 150
 151 static const struct file_operations fops_wmi_services = {
 152         .read = ath10k_read_wmi_services,
 153         .open = simple_open,
 154         .owner = THIS_MODULE,
 155         .llseek = default_llseek,
 156 };
 157
 158 void ath10k_debug_read_target_stats(struct ath10k *ar,
 159                                     struct wmi_stats_event *ev)
 160 {
 161         u8 *tmp = ev->data;
 162         struct ath10k_target_stats *stats;
 163         int num_pdev_stats, num_vdev_stats, num_peer_stats;
 164         struct wmi_pdev_stats *ps;
 165         int i;
 166
 167         spin_lock_bh(&ar->data_lock);
 168
 169         stats = &ar->debug.target_stats;
 170
 171         num_pdev_stats = __le32_to_cpu(ev->num_pdev_stats); /* 0 or 1 */
 172         num_vdev_stats = __le32_to_cpu(ev->num_vdev_stats); /* 0 or max vdevs */
 173         num_peer_stats = __le32_to_cpu(ev->num_peer_stats); /* 0 or max peers */
 174
 175         if (num_pdev_stats) {
 176                 ps = (struct wmi_pdev_stats *)tmp;
 177
 178                 stats->ch_noise_floor = __le32_to_cpu(ps->chan_nf);
 179                 stats->tx_frame_count = __le32_to_cpu(ps->tx_frame_count);
 180                 stats->rx_frame_count = __le32_to_cpu(ps->rx_frame_count);
 181                 stats->rx_clear_count = __le32_to_cpu(ps->rx_clear_count);
 182                 stats->cycle_count = __le32_to_cpu(ps->cycle_count);
 183                 stats->phy_err_count = __le32_to_cpu(ps->phy_err_count);
 184                 stats->chan_tx_power = __le32_to_cpu(ps->chan_tx_pwr);
 185
 186                 stats->comp_queued = __le32_to_cpu(ps->wal.tx.comp_queued);
 187                 stats->comp_delivered =
 188                         __le32_to_cpu(ps->wal.tx.comp_delivered);
 189                 stats->msdu_enqued = __le32_to_cpu(ps->wal.tx.msdu_enqued);
 190                 stats->mpdu_enqued = __le32_to_cpu(ps->wal.tx.mpdu_enqued);
 191                 stats->wmm_drop = __le32_to_cpu(ps->wal.tx.wmm_drop);
 192                 stats->local_enqued = __le32_to_cpu(ps->wal.tx.local_enqued);
 193                 stats->local_freed = __le32_to_cpu(ps->wal.tx.local_freed);
 194                 stats->hw_queued = __le32_to_cpu(ps->wal.tx.hw_queued);
 195                 stats->hw_reaped = __le32_to_cpu(ps->wal.tx.hw_reaped);
 196                 stats->underrun = __le32_to_cpu(ps->wal.tx.underrun);
 197                 stats->tx_abort = __le32_to_cpu(ps->wal.tx.tx_abort);
 198                 stats->mpdus_requed = __le32_to_cpu(ps->wal.tx.mpdus_requed);
 199                 stats->tx_ko = __le32_to_cpu(ps->wal.tx.tx_ko);
 200                 stats->data_rc = __le32_to_cpu(ps->wal.tx.data_rc);
 201                 stats->self_triggers = __le32_to_cpu(ps->wal.tx.self_triggers);
 202                 stats->sw_retry_failure =
 203                         __le32_to_cpu(ps->wal.tx.sw_retry_failure);
 204                 stats->illgl_rate_phy_err =
 205                         __le32_to_cpu(ps->wal.tx.illgl_rate_phy_err);
 206                 stats->pdev_cont_xretry =
 207                         __le32_to_cpu(ps->wal.tx.pdev_cont_xretry);
 208                 stats->pdev_tx_timeout =
 209                         __le32_to_cpu(ps->wal.tx.pdev_tx_timeout);
 210                 stats->pdev_resets = __le32_to_cpu(ps->wal.tx.pdev_resets);
 211                 stats->phy_underrun = __le32_to_cpu(ps->wal.tx.phy_underrun);
 212                 stats->txop_ovf = __le32_to_cpu(ps->wal.tx.txop_ovf);
 213
 214                 stats->mid_ppdu_route_change =
 215                         __le32_to_cpu(ps->wal.rx.mid_ppdu_route_change);
 216                 stats->status_rcvd = __le32_to_cpu(ps->wal.rx.status_rcvd);
 217                 stats->r0_frags = __le32_to_cpu(ps->wal.rx.r0_frags);
 218                 stats->r1_frags = __le32_to_cpu(ps->wal.rx.r1_frags);
 219                 stats->r2_frags = __le32_to_cpu(ps->wal.rx.r2_frags);
 220                 stats->r3_frags = __le32_to_cpu(ps->wal.rx.r3_frags);
 221                 stats->htt_msdus = __le32_to_cpu(ps->wal.rx.htt_msdus);
 222                 stats->htt_mpdus = __le32_to_cpu(ps->wal.rx.htt_mpdus);
 223                 stats->loc_msdus = __le32_to_cpu(ps->wal.rx.loc_msdus);
 224                 stats->loc_mpdus = __le32_to_cpu(ps->wal.rx.loc_mpdus);
 225                 stats->oversize_amsdu =
 226                         __le32_to_cpu(ps->wal.rx.oversize_amsdu);
 227                 stats->phy_errs = __le32_to_cpu(ps->wal.rx.phy_errs);
 228                 stats->phy_err_drop = __le32_to_cpu(ps->wal.rx.phy_err_drop);
 229                 stats->mpdu_errs = __le32_to_cpu(ps->wal.rx.mpdu_errs);
 230
 231                 tmp += sizeof(struct wmi_pdev_stats);
 232         }
 233
 234         /* 0 or max vdevs */
 235         /* Currently firmware does not support VDEV stats */
 236         if (num_vdev_stats) {
 237                 struct wmi_vdev_stats *vdev_stats;
 238
 239                 for (i = 0; i < num_vdev_stats; i++) {
 240                         vdev_stats = (struct wmi_vdev_stats *)tmp;
 241                         tmp += sizeof(struct wmi_vdev_stats);
 242                 }
 243         }
 244
 245         if (num_peer_stats) {
 246                 struct wmi_peer_stats *peer_stats;
 247                 struct ath10k_peer_stat *s;
 248
 249                 stats->peers = num_peer_stats;
 250
 251                 for (i = 0; i < num_peer_stats; i++) {
 252                         peer_stats = (struct wmi_peer_stats *)tmp;
 253                         s = &stats->peer_stat[i];
 254
 255                         WMI_MAC_ADDR_TO_CHAR_ARRAY(&peer_stats->peer_macaddr,
 256                                                    s->peer_macaddr);
 257                         s->peer_rssi = __le32_to_cpu(peer_stats->peer_rssi);
 258                         s->peer_tx_rate =
 259                                 __le32_to_cpu(peer_stats->peer_tx_rate);
 260
 261                         tmp += sizeof(struct wmi_peer_stats);
 262                 }
 263         }
 264
 265         spin_unlock_bh(&ar->data_lock);
 266         complete(&ar->debug.event_stats_compl);
 267 }
 268
 269 static ssize_t ath10k_read_fw_stats(struct file *file, char __user *user_buf,
 270                                     size_t count, loff_t *ppos)
 271 {
 272         struct ath10k *ar = file->private_data;
 273         struct ath10k_target_stats *fw_stats;
 274         char *buf = NULL;
 275         unsigned int len = 0, buf_len = 2500;
 276         ssize_t ret_cnt = 0;
 277         long left;
 278         int i;
 279         int ret;
 280
 281         fw_stats = &ar->debug.target_stats;
 282
 283         mutex_lock(&ar->conf_mutex);
 284
 285         if (ar->state != ATH10K_STATE_ON)
 286                 goto exit;
 287
 288         buf = kzalloc(buf_len, GFP_KERNEL);
 289         if (!buf)
 290                 goto exit;
 291
 292         ret = ath10k_wmi_request_stats(ar, WMI_REQUEST_PEER_STAT);
 293         if (ret) {
 294                 ath10k_warn("could not request stats (%d)\n", ret);
 295                 goto exit;
 296         }
 297
 298         left = wait_for_completion_timeout(&ar->debug.event_stats_compl, 1*HZ);
 299         if (left <= 0)
 300                 goto exit;
 301
 302         spin_lock_bh(&ar->data_lock);
 303         len += scnprintf(buf + len, buf_len - len, "\n");
 304         len += scnprintf(buf + len, buf_len - len, "%30s\n",
 305                          "ath10k PDEV stats");
 306         len += scnprintf(buf + len, buf_len - len, "%30s\n\n",
 307                                  "=================");
 308
 309         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 310                          "Channel noise floor", fw_stats->ch_noise_floor);
 311         len += scnprintf(buf + len, buf_len - len, "%30s %10u\n",
 312                          "Channel TX power", fw_stats->chan_tx_power);
 313         len += scnprintf(buf + len, buf_len - len, "%30s %10u\n",
 314                          "TX frame count", fw_stats->tx_frame_count);
 315         len += scnprintf(buf + len, buf_len - len, "%30s %10u\n",
 316                          "RX frame count", fw_stats->rx_frame_count);
 317         len += scnprintf(buf + len, buf_len - len, "%30s %10u\n",
 318                          "RX clear count", fw_stats->rx_clear_count);
 319         len += scnprintf(buf + len, buf_len - len, "%30s %10u\n",
 320                          "Cycle count", fw_stats->cycle_count);
 321         len += scnprintf(buf + len, buf_len - len, "%30s %10u\n",
 322                          "PHY error count", fw_stats->phy_err_count);
 323
 324         len += scnprintf(buf + len, buf_len - len, "\n");
 325         len += scnprintf(buf + len, buf_len - len, "%30s\n",
 326                          "ath10k PDEV TX stats");
 327         len += scnprintf(buf + len, buf_len - len, "%30s\n\n",
 328                                  "=================");
 329
 330         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 331                          "HTT cookies queued", fw_stats->comp_queued);
 332         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 333                          "HTT cookies disp.", fw_stats->comp_delivered);
 334         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 335                          "MSDU queued", fw_stats->msdu_enqued);
 336         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 337                          "MPDU queued", fw_stats->mpdu_enqued);
 338         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 339                          "MSDUs dropped", fw_stats->wmm_drop);
 340         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 341                          "Local enqued", fw_stats->local_enqued);
 342         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 343                          "Local freed", fw_stats->local_freed);
 344         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 345                          "HW queued", fw_stats->hw_queued);
 346         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 347                          "PPDUs reaped", fw_stats->hw_reaped);
 348         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 349                          "Num underruns", fw_stats->underrun);
 350         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 351                          "PPDUs cleaned", fw_stats->tx_abort);
 352         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 353                          "MPDUs requed", fw_stats->mpdus_requed);
 354         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 355                          "Excessive retries", fw_stats->tx_ko);
 356         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 357                          "HW rate", fw_stats->data_rc);
 358         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 359                          "Sched self tiggers", fw_stats->self_triggers);
 360         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 361                          "Dropped due to SW retries",
 362                          fw_stats->sw_retry_failure);
 363         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 364                          "Illegal rate phy errors",
 365                          fw_stats->illgl_rate_phy_err);
 366         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 367                          "Pdev continous xretry", fw_stats->pdev_cont_xretry);
 368         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 369                          "TX timeout", fw_stats->pdev_tx_timeout);
 370         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 371                          "PDEV resets", fw_stats->pdev_resets);
 372         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 373                          "PHY underrun", fw_stats->phy_underrun);
 374         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 375                          "MPDU is more than txop limit", fw_stats->txop_ovf);
 376
 377         len += scnprintf(buf + len, buf_len - len, "\n");
 378         len += scnprintf(buf + len, buf_len - len, "%30s\n",
 379                          "ath10k PDEV RX stats");
 380         len += scnprintf(buf + len, buf_len - len, "%30s\n\n",
 381                                  "=================");
 382
 383         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 384                          "Mid PPDU route change",
 385                          fw_stats->mid_ppdu_route_change);
 386         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 387                          "Tot. number of statuses", fw_stats->status_rcvd);
 388         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 389                          "Extra frags on rings 0", fw_stats->r0_frags);
 390         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 391                          "Extra frags on rings 1", fw_stats->r1_frags);
 392         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 393                          "Extra frags on rings 2", fw_stats->r2_frags);
 394         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 395                          "Extra frags on rings 3", fw_stats->r3_frags);
 396         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 397                          "MSDUs delivered to HTT", fw_stats->htt_msdus);
 398         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 399                          "MPDUs delivered to HTT", fw_stats->htt_mpdus);
 400         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 401                          "MSDUs delivered to stack", fw_stats->loc_msdus);
 402         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 403                          "MPDUs delivered to stack", fw_stats->loc_mpdus);
 404         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 405                          "Oversized AMSUs", fw_stats->oversize_amsdu);
 406         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 407                          "PHY errors", fw_stats->phy_errs);
 408         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 409                          "PHY errors drops", fw_stats->phy_err_drop);
 410         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 411                          "MPDU errors (FCS, MIC, ENC)", fw_stats->mpdu_errs);
 412
 413         len += scnprintf(buf + len, buf_len - len, "\n");
 414         len += scnprintf(buf + len, buf_len - len, "%30s\n",
 415                          "ath10k PEER stats");
 416         len += scnprintf(buf + len, buf_len - len, "%30s\n\n",
 417                                  "=================");
 418
 419         for (i = 0; i < fw_stats->peers; i++) {
 420                 len += scnprintf(buf + len, buf_len - len, "%30s %pM\n",
 421                                  "Peer MAC address",
 422                                  fw_stats->peer_stat[i].peer_macaddr);
 423                 len += scnprintf(buf + len, buf_len - len, "%30s %u\n",
 424                                  "Peer RSSI", fw_stats->peer_stat[i].peer_rssi);
 425                 len += scnprintf(buf + len, buf_len - len, "%30s %u\n",
 426                                  "Peer TX rate",
 427                                  fw_stats->peer_stat[i].peer_tx_rate);
 428                 len += scnprintf(buf + len, buf_len - len, "\n");
 429         }
 430         spin_unlock_bh(&ar->data_lock);
 431
 432         if (len > buf_len)
 433                 len = buf_len;
 434
 435         ret_cnt = simple_read_from_buffer(user_buf, count, ppos, buf, len);
 436
 437 exit:
 438         mutex_unlock(&ar->conf_mutex);
 439         kfree(buf);
 440         return ret_cnt;
 441 }
 442
 443 static const struct file_operations fops_fw_stats = {
 444         .read = ath10k_read_fw_stats,
 445         .open = simple_open,
 446         .owner = THIS_MODULE,
 447         .llseek = default_llseek,
 448 };
 449
 450 static ssize_t ath10k_read_simulate_fw_crash(struct file *file,
 451                                              char __user *user_buf,
 452                                              size_t count, loff_t *ppos)
 453 {
 454         const char buf[] = "To simulate firmware crash write one of the"
 455                            " keywords to this file:\n `soft` - this will send"
 456                            " WMI_FORCE_FW_HANG_ASSERT to firmware if FW"
 457                            " supports that command.\n `hard` - this will send"
 458                            " to firmware command with illegal parameters"
 459                            " causing firmware crash.\n";
 460
 461         return simple_read_from_buffer(user_buf, count, ppos, buf, strlen(buf));
 462 }
 463
 464 /* Simulate firmware crash:
 465  * 'soft': Call wmi command causing firmware hang. This firmware hang is
 466  * recoverable by warm firmware reset.
 467  * 'hard': Force firmware crash by setting any vdev parameter for not allowed
 468  * vdev id. This is hard firmware crash because it is recoverable only by cold
 469  * firmware reset.
 470  */
 471 static ssize_t ath10k_write_simulate_fw_crash(struct file *file,
 472                                               const char __user *user_buf,
 473                                               size_t count, loff_t *ppos)
 474 {
 475         struct ath10k *ar = file->private_data;
 476         char buf[32];
 477         int ret;
 478
 479         mutex_lock(&ar->conf_mutex);
 480
 481         simple_write_to_buffer(buf, sizeof(buf) - 1, ppos, user_buf, count);
 482
 483         /* make sure that buf is null terminated */
 484         buf[sizeof(buf) - 1] = 0;
 485
 486         if (ar->state != ATH10K_STATE_ON &&
 487             ar->state != ATH10K_STATE_RESTARTED) {
 488                 ret = -ENETDOWN;
 489                 goto exit;
 490         }
 491
 492         /* drop the possible '\n' from the end */
 493         if (buf[count - 1] == '\n') {
 494                 buf[count - 1] = 0;
 495                 count--;
 496         }
 497
 498         if (!strcmp(buf, "soft")) {
 499                 ath10k_info("simulating soft firmware crash\n");
 500                 ret = ath10k_wmi_force_fw_hang(ar, WMI_FORCE_FW_HANG_ASSERT, 0);
 501         } else if (!strcmp(buf, "hard")) {
 502                 ath10k_info("simulating hard firmware crash\n");
 503                 ret = ath10k_wmi_vdev_set_param(ar, TARGET_NUM_VDEVS + 1,
 504                                         ar->wmi.vdev_param->rts_threshold, 0);
 505         } else {
 506                 ret = -EINVAL;
 507                 goto exit;
 508         }
 509
 510         if (ret) {
 511                 ath10k_warn("failed to simulate firmware crash: %d\n", ret);
 512                 goto exit;
 513         }
 514
 515         ret = count;
 516
 517 exit:
 518         mutex_unlock(&ar->conf_mutex);
 519         return ret;
 520 }
 521
 522 static const struct file_operations fops_simulate_fw_crash = {
 523         .read = ath10k_read_simulate_fw_crash,
 524         .write = ath10k_write_simulate_fw_crash,
 525         .open = simple_open,
 526         .owner = THIS_MODULE,
 527         .llseek = default_llseek,
 528 };
 529
 530 static ssize_t ath10k_read_chip_id(struct file *file, char __user *user_buf,
 531                                    size_t count, loff_t *ppos)
 532 {
 533         struct ath10k *ar = file->private_data;
 534         unsigned int len;
 535         char buf[50];
 536
 537         len = scnprintf(buf, sizeof(buf), "0x%08x\n", ar->chip_id);
 538
 539         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
 540 }
 541
 542 static const struct file_operations fops_chip_id = {
 543         .read = ath10k_read_chip_id,
 544         .open = simple_open,
 545         .owner = THIS_MODULE,
 546         .llseek = default_llseek,
 547 };
 548
 549 static int ath10k_debug_htt_stats_req(struct ath10k *ar)
 550 {
 551         u64 cookie;
 552         int ret;
 553
 554         lockdep_assert_held(&ar->conf_mutex);
 555
 556         if (ar->debug.htt_stats_mask == 0)
 557                 /* htt stats are disabled */
 558                 return 0;
 559
 560         if (ar->state != ATH10K_STATE_ON)
 561                 return 0;
 562
 563         cookie = get_jiffies_64();
 564
 565         ret = ath10k_htt_h2t_stats_req(&ar->htt, ar->debug.htt_stats_mask,
 566                                        cookie);
 567         if (ret) {
 568                 ath10k_warn("failed to send htt stats request: %d\n", ret);
 569                 return ret;
 570         }
 571
 572         queue_delayed_work(ar->workqueue, &ar->debug.htt_stats_dwork,
 573                            msecs_to_jiffies(ATH10K_DEBUG_HTT_STATS_INTERVAL));
 574
 575         return 0;
 576 }
 577
 578 static void ath10k_debug_htt_stats_dwork(struct work_struct *work)
 579 {
 580         struct ath10k *ar = container_of(work, struct ath10k,
 581                                          debug.htt_stats_dwork.work);
 582
 583         mutex_lock(&ar->conf_mutex);
 584
 585         ath10k_debug_htt_stats_req(ar);
 586
 587         mutex_unlock(&ar->conf_mutex);
 588 }
 589
 590 static ssize_t ath10k_read_htt_stats_mask(struct file *file,
 591                                             char __user *user_buf,
 592                                             size_t count, loff_t *ppos)
 593 {
 594         struct ath10k *ar = file->private_data;
 595         char buf[32];
 596         unsigned int len;
 597
 598         len = scnprintf(buf, sizeof(buf), "%lu\n", ar->debug.htt_stats_mask);
 599
 600         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
 601 }
 602
 603 static ssize_t ath10k_write_htt_stats_mask(struct file *file,
 604                                              const char __user *user_buf,
 605                                              size_t count, loff_t *ppos)
 606 {
 607         struct ath10k *ar = file->private_data;
 608         unsigned long mask;
 609         int ret;
 610
 611         ret = kstrtoul_from_user(user_buf, count, 0, &mask);
 612         if (ret)
 613                 return ret;
 614
 615         /* max 8 bit masks (for now) */
 616         if (mask > 0xff)
 617                 return -E2BIG;
 618
 619         mutex_lock(&ar->conf_mutex);
 620
 621         ar->debug.htt_stats_mask = mask;
 622
 623         ret = ath10k_debug_htt_stats_req(ar);
 624         if (ret)
 625                 goto out;
 626
 627         ret = count;
 628
 629 out:
 630         mutex_unlock(&ar->conf_mutex);
 631
 632         return ret;
 633 }
 634
 635 static const struct file_operations fops_htt_stats_mask = {
 636         .read = ath10k_read_htt_stats_mask,
 637         .write = ath10k_write_htt_stats_mask,
 638         .open = simple_open,
 639         .owner = THIS_MODULE,
 640         .llseek = default_llseek,
 641 };
 642
 643 static ssize_t ath10k_read_fw_dbglog(struct file *file,
 644                                             char __user *user_buf,
 645                                             size_t count, loff_t *ppos)
 646 {
 647         struct ath10k *ar = file->private_data;
 648         unsigned int len;
 649         char buf[32];
 650
 651         len = scnprintf(buf, sizeof(buf), "0x%08x\n",
 652                         ar->debug.fw_dbglog_mask);
 653
 654         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
 655 }
 656
 657 static ssize_t ath10k_write_fw_dbglog(struct file *file,
 658                                       const char __user *user_buf,
 659                                       size_t count, loff_t *ppos)
 660 {
 661         struct ath10k *ar = file->private_data;
 662         unsigned long mask;
 663         int ret;
 664
 665         ret = kstrtoul_from_user(user_buf, count, 0, &mask);
 666         if (ret)
 667                 return ret;
 668
 669         mutex_lock(&ar->conf_mutex);
 670
 671         ar->debug.fw_dbglog_mask = mask;
 672
 673         if (ar->state == ATH10K_STATE_ON) {
 674                 ret = ath10k_wmi_dbglog_cfg(ar, ar->debug.fw_dbglog_mask);
 675                 if (ret) {
 676                         ath10k_warn("dbglog cfg failed from debugfs: %d\n",
 677                                     ret);
 678                         goto exit;
 679                 }
 680         }
 681
 682         ret = count;
 683
 684 exit:
 685         mutex_unlock(&ar->conf_mutex);
 686
 687         return ret;
 688 }
 689
 690 static const struct file_operations fops_fw_dbglog = {
 691         .read = ath10k_read_fw_dbglog,
 692         .write = ath10k_write_fw_dbglog,
 693         .open = simple_open,
 694         .owner = THIS_MODULE,
 695         .llseek = default_llseek,
 696 };
 697
 698 int ath10k_debug_start(struct ath10k *ar)
 699 {
 700         int ret;
 701
 702         lockdep_assert_held(&ar->conf_mutex);
 703
 704         ret = ath10k_debug_htt_stats_req(ar);
 705         if (ret)
 706                 /* continue normally anyway, this isn't serious */
 707                 ath10k_warn("failed to start htt stats workqueue: %d\n", ret);
 708
 709         if (ar->debug.fw_dbglog_mask) {
 710                 ret = ath10k_wmi_dbglog_cfg(ar, ar->debug.fw_dbglog_mask);
 711                 if (ret)
 712                         /* not serious */
 713                         ath10k_warn("failed to enable dbglog during start: %d",
 714                                     ret);
 715         }
 716
 717         return 0;
 718 }
 719
 720 void ath10k_debug_stop(struct ath10k *ar)
 721 {
 722         lockdep_assert_held(&ar->conf_mutex);
 723
 724         /* Must not use _sync to avoid deadlock, we do that in
 725          * ath10k_debug_destroy(). The check for htt_stats_mask is to avoid
 726          * warning from del_timer(). */
 727         if (ar->debug.htt_stats_mask != 0)
 728                 cancel_delayed_work(&ar->debug.htt_stats_dwork);
 729 }
 730
 731 static ssize_t ath10k_write_simulate_radar(struct file *file,
 732                                            const char __user *user_buf,
 733                                            size_t count, loff_t *ppos)
 734 {
 735         struct ath10k *ar = file->private_data;
 736
 737         ieee80211_radar_detected(ar->hw);
 738
 739         return count;
 740 }
 741
 742 static const struct file_operations fops_simulate_radar = {
 743         .write = ath10k_write_simulate_radar,
 744         .open = simple_open,
 745         .owner = THIS_MODULE,
 746         .llseek = default_llseek,
 747 };
 748
 749 #define ATH10K_DFS_STAT(s, p) (\
 750         len += scnprintf(buf + len, size - len, "%-28s : %10u\n", s, \
 751                          ar->debug.dfs_stats.p))
 752
 753 #define ATH10K_DFS_POOL_STAT(s, p) (\
 754         len += scnprintf(buf + len, size - len, "%-28s : %10u\n", s, \
 755                          ar->debug.dfs_pool_stats.p))
 756
 757 static ssize_t ath10k_read_dfs_stats(struct file *file, char __user *user_buf,
 758                                      size_t count, loff_t *ppos)
 759 {
 760         int retval = 0, len = 0;
 761         const int size = 8000;
 762         struct ath10k *ar = file->private_data;
 763         char *buf;
 764
 765         buf = kzalloc(size, GFP_KERNEL);
 766         if (buf == NULL)
 767                 return -ENOMEM;
 768
 769         if (!ar->dfs_detector) {
 770                 len += scnprintf(buf + len, size - len, "DFS not enabled\n");
 771                 goto exit;
 772         }
 773
 774         ar->debug.dfs_pool_stats =
 775                         ar->dfs_detector->get_stats(ar->dfs_detector);
 776
 777         len += scnprintf(buf + len, size - len, "Pulse detector statistics:\n");
 778
 779         ATH10K_DFS_STAT("reported phy errors", phy_errors);
 780         ATH10K_DFS_STAT("pulse events reported", pulses_total);
 781         ATH10K_DFS_STAT("DFS pulses detected", pulses_detected);
 782         ATH10K_DFS_STAT("DFS pulses discarded", pulses_discarded);
 783         ATH10K_DFS_STAT("Radars detected", radar_detected);
 784
 785         len += scnprintf(buf + len, size - len, "Global Pool statistics:\n");
 786         ATH10K_DFS_POOL_STAT("Pool references", pool_reference);
 787         ATH10K_DFS_POOL_STAT("Pulses allocated", pulse_allocated);
 788         ATH10K_DFS_POOL_STAT("Pulses alloc error", pulse_alloc_error);
 789         ATH10K_DFS_POOL_STAT("Pulses in use", pulse_used);
 790         ATH10K_DFS_POOL_STAT("Seqs. allocated", pseq_allocated);
 791         ATH10K_DFS_POOL_STAT("Seqs. alloc error", pseq_alloc_error);
 792         ATH10K_DFS_POOL_STAT("Seqs. in use", pseq_used);
 793
 794 exit:
 795         if (len > size)
 796                 len = size;
 797
 798         retval = simple_read_from_buffer(user_buf, count, ppos, buf, len);
 799         kfree(buf);
 800
 801         return retval;
 802 }
 803
 804 static const struct file_operations fops_dfs_stats = {
 805         .read = ath10k_read_dfs_stats,
 806         .open = simple_open,
 807         .owner = THIS_MODULE,
 808         .llseek = default_llseek,
 809 };
 810
 811 int ath10k_debug_create(struct ath10k *ar)
 812 {
 813         ar->debug.debugfs_phy = debugfs_create_dir("ath10k",
 814                                                    ar->hw->wiphy->debugfsdir);
 815
 816         if (!ar->debug.debugfs_phy)
 817                 return -ENOMEM;
 818
 819         INIT_DELAYED_WORK(&ar->debug.htt_stats_dwork,
 820                           ath10k_debug_htt_stats_dwork);
 821
 822         init_completion(&ar->debug.event_stats_compl);
 823
 824         debugfs_create_file("fw_stats", S_IRUSR, ar->debug.debugfs_phy, ar,
 825                             &fops_fw_stats);
 826
 827         debugfs_create_file("wmi_services", S_IRUSR, ar->debug.debugfs_phy, ar,
 828                             &fops_wmi_services);
 829
 830         debugfs_create_file("simulate_fw_crash", S_IRUSR, ar->debug.debugfs_phy,
 831                             ar, &fops_simulate_fw_crash);
 832
 833         debugfs_create_file("chip_id", S_IRUSR, ar->debug.debugfs_phy,
 834                             ar, &fops_chip_id);
 835
 836         debugfs_create_file("htt_stats_mask", S_IRUSR, ar->debug.debugfs_phy,
 837                             ar, &fops_htt_stats_mask);
 838
 839         debugfs_create_file("fw_dbglog", S_IRUSR, ar->debug.debugfs_phy,
 840                             ar, &fops_fw_dbglog);
 841
 842         if (config_enabled(CONFIG_ATH10K_DFS_CERTIFIED)) {
 843                 debugfs_create_file("dfs_simulate_radar", S_IWUSR,
 844                                     ar->debug.debugfs_phy, ar,
 845                                     &fops_simulate_radar);
 846
 847                 debugfs_create_bool("dfs_block_radar_events", S_IWUSR,
 848                                     ar->debug.debugfs_phy,
 849                                     &ar->dfs_block_radar_events);
 850
 851                 debugfs_create_file("dfs_stats", S_IRUSR,
 852                                     ar->debug.debugfs_phy, ar,
 853                                     &fops_dfs_stats);
 854         }
 855
 856         return 0;
 857 }
 858
 859 void ath10k_debug_destroy(struct ath10k *ar)
 860 {
 861         cancel_delayed_work_sync(&ar->debug.htt_stats_dwork);
 862 }
 863
 864 #endif /* CONFIG_ATH10K_DEBUGFS */
 865
 866 #ifdef CONFIG_ATH10K_DEBUG
 867 void ath10k_dbg(enum ath10k_debug_mask mask, const char *fmt, ...)
 868 {
 869         struct va_format vaf;
 870         va_list args;
 871
 872         va_start(args, fmt);
 873
 874         vaf.fmt = fmt;
 875         vaf.va = &args;
 876
 877         if (ath10k_debug_mask & mask)
 878                 ath10k_printk(KERN_DEBUG, "%pV", &vaf);
 879
 880         trace_ath10k_log_dbg(mask, &vaf);
 881
 882         va_end(args);
 883 }
 884 EXPORT_SYMBOL(ath10k_dbg);
 885
 886 void ath10k_dbg_dump(enum ath10k_debug_mask mask,
 887                      const char *msg, const char *prefix,
 888                      const void *buf, size_t len)
 889 {
 890         if (ath10k_debug_mask & mask) {
 891                 if (msg)
 892                         ath10k_dbg(mask, "%s\n", msg);
 893
 894                 print_hex_dump_bytes(prefix, DUMP_PREFIX_OFFSET, buf, len);
 895         }
 896
 897         /* tracing code doesn't like null strings :/ */
 898         trace_ath10k_log_dbg_dump(msg ? msg : "", prefix ? prefix : "",
 899                                   buf, len);
 900 }
 901 EXPORT_SYMBOL(ath10k_dbg_dump);
 902
 903 #endif /* CONFIG_ATH10K_DEBUG */