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_10x *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_10x *)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                 if (test_bit(ATH10K_FW_FEATURE_WMI_10X,
 232                              ar->fw_features)) {
 233                         stats->ack_rx_bad = __le32_to_cpu(ps->ack_rx_bad);
 234                         stats->rts_bad = __le32_to_cpu(ps->rts_bad);
 235                         stats->rts_good = __le32_to_cpu(ps->rts_good);
 236                         stats->fcs_bad = __le32_to_cpu(ps->fcs_bad);
 237                         stats->no_beacons = __le32_to_cpu(ps->no_beacons);
 238                         stats->mib_int_count = __le32_to_cpu(ps->mib_int_count);
 239                         tmp += sizeof(struct wmi_pdev_stats_10x);
 240                 } else {
 241                         tmp += sizeof(struct wmi_pdev_stats_old);
 242                 }
 243         }
 244
 245         /* 0 or max vdevs */
 246         /* Currently firmware does not support VDEV stats */
 247         if (num_vdev_stats) {
 248                 struct wmi_vdev_stats *vdev_stats;
 249
 250                 for (i = 0; i < num_vdev_stats; i++) {
 251                         vdev_stats = (struct wmi_vdev_stats *)tmp;
 252                         tmp += sizeof(struct wmi_vdev_stats);
 253                 }
 254         }
 255
 256         if (num_peer_stats) {
 257                 struct wmi_peer_stats_10x *peer_stats;
 258                 struct ath10k_peer_stat *s;
 259
 260                 stats->peers = num_peer_stats;
 261
 262                 for (i = 0; i < num_peer_stats; i++) {
 263                         peer_stats = (struct wmi_peer_stats_10x *)tmp;
 264                         s = &stats->peer_stat[i];
 265
 266                         memcpy(s->peer_macaddr, &peer_stats->peer_macaddr.addr,
 267                                ETH_ALEN);
 268                         s->peer_rssi = __le32_to_cpu(peer_stats->peer_rssi);
 269                         s->peer_tx_rate =
 270                                 __le32_to_cpu(peer_stats->peer_tx_rate);
 271                         if (test_bit(ATH10K_FW_FEATURE_WMI_10X,
 272                                      ar->fw_features)) {
 273                                 s->peer_rx_rate =
 274                                         __le32_to_cpu(peer_stats->peer_rx_rate);
 275                                 tmp += sizeof(struct wmi_peer_stats_10x);
 276
 277                         } else {
 278                                 tmp += sizeof(struct wmi_peer_stats_old);
 279                         }
 280                 }
 281         }
 282
 283         spin_unlock_bh(&ar->data_lock);
 284         complete(&ar->debug.event_stats_compl);
 285 }
 286
 287 static ssize_t ath10k_read_fw_stats(struct file *file, char __user *user_buf,
 288                                     size_t count, loff_t *ppos)
 289 {
 290         struct ath10k *ar = file->private_data;
 291         struct ath10k_target_stats *fw_stats;
 292         char *buf = NULL;
 293         unsigned int len = 0, buf_len = 8000;
 294         ssize_t ret_cnt = 0;
 295         long left;
 296         int i;
 297         int ret;
 298
 299         fw_stats = &ar->debug.target_stats;
 300
 301         mutex_lock(&ar->conf_mutex);
 302
 303         if (ar->state != ATH10K_STATE_ON)
 304                 goto exit;
 305
 306         buf = kzalloc(buf_len, GFP_KERNEL);
 307         if (!buf)
 308                 goto exit;
 309
 310         ret = ath10k_wmi_request_stats(ar, WMI_REQUEST_PEER_STAT);
 311         if (ret) {
 312                 ath10k_warn("could not request stats (%d)\n", ret);
 313                 goto exit;
 314         }
 315
 316         left = wait_for_completion_timeout(&ar->debug.event_stats_compl, 1*HZ);
 317         if (left <= 0)
 318                 goto exit;
 319
 320         spin_lock_bh(&ar->data_lock);
 321         len += scnprintf(buf + len, buf_len - len, "\n");
 322         len += scnprintf(buf + len, buf_len - len, "%30s\n",
 323                          "ath10k PDEV stats");
 324         len += scnprintf(buf + len, buf_len - len, "%30s\n\n",
 325                                  "=================");
 326
 327         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 328                          "Channel noise floor", fw_stats->ch_noise_floor);
 329         len += scnprintf(buf + len, buf_len - len, "%30s %10u\n",
 330                          "Channel TX power", fw_stats->chan_tx_power);
 331         len += scnprintf(buf + len, buf_len - len, "%30s %10u\n",
 332                          "TX frame count", fw_stats->tx_frame_count);
 333         len += scnprintf(buf + len, buf_len - len, "%30s %10u\n",
 334                          "RX frame count", fw_stats->rx_frame_count);
 335         len += scnprintf(buf + len, buf_len - len, "%30s %10u\n",
 336                          "RX clear count", fw_stats->rx_clear_count);
 337         len += scnprintf(buf + len, buf_len - len, "%30s %10u\n",
 338                          "Cycle count", fw_stats->cycle_count);
 339         len += scnprintf(buf + len, buf_len - len, "%30s %10u\n",
 340                          "PHY error count", fw_stats->phy_err_count);
 341         len += scnprintf(buf + len, buf_len - len, "%30s %10u\n",
 342                          "RTS bad count", fw_stats->rts_bad);
 343         len += scnprintf(buf + len, buf_len - len, "%30s %10u\n",
 344                          "RTS good count", fw_stats->rts_good);
 345         len += scnprintf(buf + len, buf_len - len, "%30s %10u\n",
 346                          "FCS bad count", fw_stats->fcs_bad);
 347         len += scnprintf(buf + len, buf_len - len, "%30s %10u\n",
 348                          "No beacon count", fw_stats->no_beacons);
 349         len += scnprintf(buf + len, buf_len - len, "%30s %10u\n",
 350                          "MIB int count", fw_stats->mib_int_count);
 351
 352         len += scnprintf(buf + len, buf_len - len, "\n");
 353         len += scnprintf(buf + len, buf_len - len, "%30s\n",
 354                          "ath10k PDEV TX stats");
 355         len += scnprintf(buf + len, buf_len - len, "%30s\n\n",
 356                                  "=================");
 357
 358         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 359                          "HTT cookies queued", fw_stats->comp_queued);
 360         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 361                          "HTT cookies disp.", fw_stats->comp_delivered);
 362         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 363                          "MSDU queued", fw_stats->msdu_enqued);
 364         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 365                          "MPDU queued", fw_stats->mpdu_enqued);
 366         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 367                          "MSDUs dropped", fw_stats->wmm_drop);
 368         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 369                          "Local enqued", fw_stats->local_enqued);
 370         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 371                          "Local freed", fw_stats->local_freed);
 372         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 373                          "HW queued", fw_stats->hw_queued);
 374         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 375                          "PPDUs reaped", fw_stats->hw_reaped);
 376         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 377                          "Num underruns", fw_stats->underrun);
 378         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 379                          "PPDUs cleaned", fw_stats->tx_abort);
 380         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 381                          "MPDUs requed", fw_stats->mpdus_requed);
 382         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 383                          "Excessive retries", fw_stats->tx_ko);
 384         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 385                          "HW rate", fw_stats->data_rc);
 386         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 387                          "Sched self tiggers", fw_stats->self_triggers);
 388         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 389                          "Dropped due to SW retries",
 390                          fw_stats->sw_retry_failure);
 391         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 392                          "Illegal rate phy errors",
 393                          fw_stats->illgl_rate_phy_err);
 394         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 395                          "Pdev continous xretry", fw_stats->pdev_cont_xretry);
 396         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 397                          "TX timeout", fw_stats->pdev_tx_timeout);
 398         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 399                          "PDEV resets", fw_stats->pdev_resets);
 400         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 401                          "PHY underrun", fw_stats->phy_underrun);
 402         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 403                          "MPDU is more than txop limit", fw_stats->txop_ovf);
 404
 405         len += scnprintf(buf + len, buf_len - len, "\n");
 406         len += scnprintf(buf + len, buf_len - len, "%30s\n",
 407                          "ath10k PDEV RX stats");
 408         len += scnprintf(buf + len, buf_len - len, "%30s\n\n",
 409                                  "=================");
 410
 411         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 412                          "Mid PPDU route change",
 413                          fw_stats->mid_ppdu_route_change);
 414         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 415                          "Tot. number of statuses", fw_stats->status_rcvd);
 416         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 417                          "Extra frags on rings 0", fw_stats->r0_frags);
 418         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 419                          "Extra frags on rings 1", fw_stats->r1_frags);
 420         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 421                          "Extra frags on rings 2", fw_stats->r2_frags);
 422         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 423                          "Extra frags on rings 3", fw_stats->r3_frags);
 424         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 425                          "MSDUs delivered to HTT", fw_stats->htt_msdus);
 426         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 427                          "MPDUs delivered to HTT", fw_stats->htt_mpdus);
 428         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 429                          "MSDUs delivered to stack", fw_stats->loc_msdus);
 430         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 431                          "MPDUs delivered to stack", fw_stats->loc_mpdus);
 432         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 433                          "Oversized AMSUs", fw_stats->oversize_amsdu);
 434         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 435                          "PHY errors", fw_stats->phy_errs);
 436         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 437                          "PHY errors drops", fw_stats->phy_err_drop);
 438         len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
 439                          "MPDU errors (FCS, MIC, ENC)", fw_stats->mpdu_errs);
 440
 441         len += scnprintf(buf + len, buf_len - len, "\n");
 442         len += scnprintf(buf + len, buf_len - len, "%30s (%d)\n",
 443                          "ath10k PEER stats", fw_stats->peers);
 444         len += scnprintf(buf + len, buf_len - len, "%30s\n\n",
 445                                  "=================");
 446
 447         for (i = 0; i < fw_stats->peers; i++) {
 448                 len += scnprintf(buf + len, buf_len - len, "%30s %pM\n",
 449                                  "Peer MAC address",
 450                                  fw_stats->peer_stat[i].peer_macaddr);
 451                 len += scnprintf(buf + len, buf_len - len, "%30s %u\n",
 452                                  "Peer RSSI", fw_stats->peer_stat[i].peer_rssi);
 453                 len += scnprintf(buf + len, buf_len - len, "%30s %u\n",
 454                                  "Peer TX rate",
 455                                  fw_stats->peer_stat[i].peer_tx_rate);
 456                 len += scnprintf(buf + len, buf_len - len, "%30s %u\n",
 457                                  "Peer RX rate",
 458                                  fw_stats->peer_stat[i].peer_rx_rate);
 459                 len += scnprintf(buf + len, buf_len - len, "\n");
 460         }
 461         spin_unlock_bh(&ar->data_lock);
 462
 463         if (len > buf_len)
 464                 len = buf_len;
 465
 466         ret_cnt = simple_read_from_buffer(user_buf, count, ppos, buf, len);
 467
 468 exit:
 469         mutex_unlock(&ar->conf_mutex);
 470         kfree(buf);
 471         return ret_cnt;
 472 }
 473
 474 static const struct file_operations fops_fw_stats = {
 475         .read = ath10k_read_fw_stats,
 476         .open = simple_open,
 477         .owner = THIS_MODULE,
 478         .llseek = default_llseek,
 479 };
 480
 481 static ssize_t ath10k_read_simulate_fw_crash(struct file *file,
 482                                              char __user *user_buf,
 483                                              size_t count, loff_t *ppos)
 484 {
 485         const char buf[] = "To simulate firmware crash write one of the"
 486                            " keywords to this file:\n `soft` - this will send"
 487                            " WMI_FORCE_FW_HANG_ASSERT to firmware if FW"
 488                            " supports that command.\n `hard` - this will send"
 489                            " to firmware command with illegal parameters"
 490                            " causing firmware crash.\n";
 491
 492         return simple_read_from_buffer(user_buf, count, ppos, buf, strlen(buf));
 493 }
 494
 495 /* Simulate firmware crash:
 496  * 'soft': Call wmi command causing firmware hang. This firmware hang is
 497  * recoverable by warm firmware reset.
 498  * 'hard': Force firmware crash by setting any vdev parameter for not allowed
 499  * vdev id. This is hard firmware crash because it is recoverable only by cold
 500  * firmware reset.
 501  */
 502 static ssize_t ath10k_write_simulate_fw_crash(struct file *file,
 503                                               const char __user *user_buf,
 504                                               size_t count, loff_t *ppos)
 505 {
 506         struct ath10k *ar = file->private_data;
 507         char buf[32];
 508         int ret;
 509
 510         mutex_lock(&ar->conf_mutex);
 511
 512         simple_write_to_buffer(buf, sizeof(buf) - 1, ppos, user_buf, count);
 513
 514         /* make sure that buf is null terminated */
 515         buf[sizeof(buf) - 1] = 0;
 516
 517         if (ar->state != ATH10K_STATE_ON &&
 518             ar->state != ATH10K_STATE_RESTARTED) {
 519                 ret = -ENETDOWN;
 520                 goto exit;
 521         }
 522
 523         /* drop the possible '\n' from the end */
 524         if (buf[count - 1] == '\n') {
 525                 buf[count - 1] = 0;
 526                 count--;
 527         }
 528
 529         if (!strcmp(buf, "soft")) {
 530                 ath10k_info("simulating soft firmware crash\n");
 531                 ret = ath10k_wmi_force_fw_hang(ar, WMI_FORCE_FW_HANG_ASSERT, 0);
 532         } else if (!strcmp(buf, "hard")) {
 533                 ath10k_info("simulating hard firmware crash\n");
 534                 ret = ath10k_wmi_vdev_set_param(ar, TARGET_NUM_VDEVS + 1,
 535                                         ar->wmi.vdev_param->rts_threshold, 0);
 536         } else {
 537                 ret = -EINVAL;
 538                 goto exit;
 539         }
 540
 541         if (ret) {
 542                 ath10k_warn("failed to simulate firmware crash: %d\n", ret);
 543                 goto exit;
 544         }
 545
 546         ret = count;
 547
 548 exit:
 549         mutex_unlock(&ar->conf_mutex);
 550         return ret;
 551 }
 552
 553 static const struct file_operations fops_simulate_fw_crash = {
 554         .read = ath10k_read_simulate_fw_crash,
 555         .write = ath10k_write_simulate_fw_crash,
 556         .open = simple_open,
 557         .owner = THIS_MODULE,
 558         .llseek = default_llseek,
 559 };
 560
 561 static ssize_t ath10k_read_chip_id(struct file *file, char __user *user_buf,
 562                                    size_t count, loff_t *ppos)
 563 {
 564         struct ath10k *ar = file->private_data;
 565         unsigned int len;
 566         char buf[50];
 567
 568         len = scnprintf(buf, sizeof(buf), "0x%08x\n", ar->chip_id);
 569
 570         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
 571 }
 572
 573 static const struct file_operations fops_chip_id = {
 574         .read = ath10k_read_chip_id,
 575         .open = simple_open,
 576         .owner = THIS_MODULE,
 577         .llseek = default_llseek,
 578 };
 579
 580 static int ath10k_debug_htt_stats_req(struct ath10k *ar)
 581 {
 582         u64 cookie;
 583         int ret;
 584
 585         lockdep_assert_held(&ar->conf_mutex);
 586
 587         if (ar->debug.htt_stats_mask == 0)
 588                 /* htt stats are disabled */
 589                 return 0;
 590
 591         if (ar->state != ATH10K_STATE_ON)
 592                 return 0;
 593
 594         cookie = get_jiffies_64();
 595
 596         ret = ath10k_htt_h2t_stats_req(&ar->htt, ar->debug.htt_stats_mask,
 597                                        cookie);
 598         if (ret) {
 599                 ath10k_warn("failed to send htt stats request: %d\n", ret);
 600                 return ret;
 601         }
 602
 603         queue_delayed_work(ar->workqueue, &ar->debug.htt_stats_dwork,
 604                            msecs_to_jiffies(ATH10K_DEBUG_HTT_STATS_INTERVAL));
 605
 606         return 0;
 607 }
 608
 609 static void ath10k_debug_htt_stats_dwork(struct work_struct *work)
 610 {
 611         struct ath10k *ar = container_of(work, struct ath10k,
 612                                          debug.htt_stats_dwork.work);
 613
 614         mutex_lock(&ar->conf_mutex);
 615
 616         ath10k_debug_htt_stats_req(ar);
 617
 618         mutex_unlock(&ar->conf_mutex);
 619 }
 620
 621 static ssize_t ath10k_read_htt_stats_mask(struct file *file,
 622                                             char __user *user_buf,
 623                                             size_t count, loff_t *ppos)
 624 {
 625         struct ath10k *ar = file->private_data;
 626         char buf[32];
 627         unsigned int len;
 628
 629         len = scnprintf(buf, sizeof(buf), "%lu\n", ar->debug.htt_stats_mask);
 630
 631         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
 632 }
 633
 634 static ssize_t ath10k_write_htt_stats_mask(struct file *file,
 635                                              const char __user *user_buf,
 636                                              size_t count, loff_t *ppos)
 637 {
 638         struct ath10k *ar = file->private_data;
 639         unsigned long mask;
 640         int ret;
 641
 642         ret = kstrtoul_from_user(user_buf, count, 0, &mask);
 643         if (ret)
 644                 return ret;
 645
 646         /* max 8 bit masks (for now) */
 647         if (mask > 0xff)
 648                 return -E2BIG;
 649
 650         mutex_lock(&ar->conf_mutex);
 651
 652         ar->debug.htt_stats_mask = mask;
 653
 654         ret = ath10k_debug_htt_stats_req(ar);
 655         if (ret)
 656                 goto out;
 657
 658         ret = count;
 659
 660 out:
 661         mutex_unlock(&ar->conf_mutex);
 662
 663         return ret;
 664 }
 665
 666 static const struct file_operations fops_htt_stats_mask = {
 667         .read = ath10k_read_htt_stats_mask,
 668         .write = ath10k_write_htt_stats_mask,
 669         .open = simple_open,
 670         .owner = THIS_MODULE,
 671         .llseek = default_llseek,
 672 };
 673
 674 static ssize_t ath10k_read_fw_dbglog(struct file *file,
 675                                             char __user *user_buf,
 676                                             size_t count, loff_t *ppos)
 677 {
 678         struct ath10k *ar = file->private_data;
 679         unsigned int len;
 680         char buf[32];
 681
 682         len = scnprintf(buf, sizeof(buf), "0x%08x\n",
 683                         ar->debug.fw_dbglog_mask);
 684
 685         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
 686 }
 687
 688 static ssize_t ath10k_write_fw_dbglog(struct file *file,
 689                                       const char __user *user_buf,
 690                                       size_t count, loff_t *ppos)
 691 {
 692         struct ath10k *ar = file->private_data;
 693         unsigned long mask;
 694         int ret;
 695
 696         ret = kstrtoul_from_user(user_buf, count, 0, &mask);
 697         if (ret)
 698                 return ret;
 699
 700         mutex_lock(&ar->conf_mutex);
 701
 702         ar->debug.fw_dbglog_mask = mask;
 703
 704         if (ar->state == ATH10K_STATE_ON) {
 705                 ret = ath10k_wmi_dbglog_cfg(ar, ar->debug.fw_dbglog_mask);
 706                 if (ret) {
 707                         ath10k_warn("dbglog cfg failed from debugfs: %d\n",
 708                                     ret);
 709                         goto exit;
 710                 }
 711         }
 712
 713         ret = count;
 714
 715 exit:
 716         mutex_unlock(&ar->conf_mutex);
 717
 718         return ret;
 719 }
 720
 721 static const struct file_operations fops_fw_dbglog = {
 722         .read = ath10k_read_fw_dbglog,
 723         .write = ath10k_write_fw_dbglog,
 724         .open = simple_open,
 725         .owner = THIS_MODULE,
 726         .llseek = default_llseek,
 727 };
 728
 729 int ath10k_debug_start(struct ath10k *ar)
 730 {
 731         int ret;
 732
 733         lockdep_assert_held(&ar->conf_mutex);
 734
 735         ret = ath10k_debug_htt_stats_req(ar);
 736         if (ret)
 737                 /* continue normally anyway, this isn't serious */
 738                 ath10k_warn("failed to start htt stats workqueue: %d\n", ret);
 739
 740         if (ar->debug.fw_dbglog_mask) {
 741                 ret = ath10k_wmi_dbglog_cfg(ar, ar->debug.fw_dbglog_mask);
 742                 if (ret)
 743                         /* not serious */
 744                         ath10k_warn("failed to enable dbglog during start: %d",
 745                                     ret);
 746         }
 747
 748         return 0;
 749 }
 750
 751 void ath10k_debug_stop(struct ath10k *ar)
 752 {
 753         lockdep_assert_held(&ar->conf_mutex);
 754
 755         /* Must not use _sync to avoid deadlock, we do that in
 756          * ath10k_debug_destroy(). The check for htt_stats_mask is to avoid
 757          * warning from del_timer(). */
 758         if (ar->debug.htt_stats_mask != 0)
 759                 cancel_delayed_work(&ar->debug.htt_stats_dwork);
 760 }
 761
 762 static ssize_t ath10k_write_simulate_radar(struct file *file,
 763                                            const char __user *user_buf,
 764                                            size_t count, loff_t *ppos)
 765 {
 766         struct ath10k *ar = file->private_data;
 767
 768         ieee80211_radar_detected(ar->hw);
 769
 770         return count;
 771 }
 772
 773 static const struct file_operations fops_simulate_radar = {
 774         .write = ath10k_write_simulate_radar,
 775         .open = simple_open,
 776         .owner = THIS_MODULE,
 777         .llseek = default_llseek,
 778 };
 779
 780 #define ATH10K_DFS_STAT(s, p) (\
 781         len += scnprintf(buf + len, size - len, "%-28s : %10u\n", s, \
 782                          ar->debug.dfs_stats.p))
 783
 784 #define ATH10K_DFS_POOL_STAT(s, p) (\
 785         len += scnprintf(buf + len, size - len, "%-28s : %10u\n", s, \
 786                          ar->debug.dfs_pool_stats.p))
 787
 788 static ssize_t ath10k_read_dfs_stats(struct file *file, char __user *user_buf,
 789                                      size_t count, loff_t *ppos)
 790 {
 791         int retval = 0, len = 0;
 792         const int size = 8000;
 793         struct ath10k *ar = file->private_data;
 794         char *buf;
 795
 796         buf = kzalloc(size, GFP_KERNEL);
 797         if (buf == NULL)
 798                 return -ENOMEM;
 799
 800         if (!ar->dfs_detector) {
 801                 len += scnprintf(buf + len, size - len, "DFS not enabled\n");
 802                 goto exit;
 803         }
 804
 805         ar->debug.dfs_pool_stats =
 806                         ar->dfs_detector->get_stats(ar->dfs_detector);
 807
 808         len += scnprintf(buf + len, size - len, "Pulse detector statistics:\n");
 809
 810         ATH10K_DFS_STAT("reported phy errors", phy_errors);
 811         ATH10K_DFS_STAT("pulse events reported", pulses_total);
 812         ATH10K_DFS_STAT("DFS pulses detected", pulses_detected);
 813         ATH10K_DFS_STAT("DFS pulses discarded", pulses_discarded);
 814         ATH10K_DFS_STAT("Radars detected", radar_detected);
 815
 816         len += scnprintf(buf + len, size - len, "Global Pool statistics:\n");
 817         ATH10K_DFS_POOL_STAT("Pool references", pool_reference);
 818         ATH10K_DFS_POOL_STAT("Pulses allocated", pulse_allocated);
 819         ATH10K_DFS_POOL_STAT("Pulses alloc error", pulse_alloc_error);
 820         ATH10K_DFS_POOL_STAT("Pulses in use", pulse_used);
 821         ATH10K_DFS_POOL_STAT("Seqs. allocated", pseq_allocated);
 822         ATH10K_DFS_POOL_STAT("Seqs. alloc error", pseq_alloc_error);
 823         ATH10K_DFS_POOL_STAT("Seqs. in use", pseq_used);
 824
 825 exit:
 826         if (len > size)
 827                 len = size;
 828
 829         retval = simple_read_from_buffer(user_buf, count, ppos, buf, len);
 830         kfree(buf);
 831
 832         return retval;
 833 }
 834
 835 static const struct file_operations fops_dfs_stats = {
 836         .read = ath10k_read_dfs_stats,
 837         .open = simple_open,
 838         .owner = THIS_MODULE,
 839         .llseek = default_llseek,
 840 };
 841
 842 int ath10k_debug_create(struct ath10k *ar)
 843 {
 844         ar->debug.debugfs_phy = debugfs_create_dir("ath10k",
 845                                                    ar->hw->wiphy->debugfsdir);
 846
 847         if (!ar->debug.debugfs_phy)
 848                 return -ENOMEM;
 849
 850         INIT_DELAYED_WORK(&ar->debug.htt_stats_dwork,
 851                           ath10k_debug_htt_stats_dwork);
 852
 853         init_completion(&ar->debug.event_stats_compl);
 854
 855         debugfs_create_file("fw_stats", S_IRUSR, ar->debug.debugfs_phy, ar,
 856                             &fops_fw_stats);
 857
 858         debugfs_create_file("wmi_services", S_IRUSR, ar->debug.debugfs_phy, ar,
 859                             &fops_wmi_services);
 860
 861         debugfs_create_file("simulate_fw_crash", S_IRUSR, ar->debug.debugfs_phy,
 862                             ar, &fops_simulate_fw_crash);
 863
 864         debugfs_create_file("chip_id", S_IRUSR, ar->debug.debugfs_phy,
 865                             ar, &fops_chip_id);
 866
 867         debugfs_create_file("htt_stats_mask", S_IRUSR, ar->debug.debugfs_phy,
 868                             ar, &fops_htt_stats_mask);
 869
 870         debugfs_create_file("fw_dbglog", S_IRUSR, ar->debug.debugfs_phy,
 871                             ar, &fops_fw_dbglog);
 872
 873         if (config_enabled(CONFIG_ATH10K_DFS_CERTIFIED)) {
 874                 debugfs_create_file("dfs_simulate_radar", S_IWUSR,
 875                                     ar->debug.debugfs_phy, ar,
 876                                     &fops_simulate_radar);
 877
 878                 debugfs_create_bool("dfs_block_radar_events", S_IWUSR,
 879                                     ar->debug.debugfs_phy,
 880                                     &ar->dfs_block_radar_events);
 881
 882                 debugfs_create_file("dfs_stats", S_IRUSR,
 883                                     ar->debug.debugfs_phy, ar,
 884                                     &fops_dfs_stats);
 885         }
 886
 887         return 0;
 888 }
 889
 890 void ath10k_debug_destroy(struct ath10k *ar)
 891 {
 892         cancel_delayed_work_sync(&ar->debug.htt_stats_dwork);
 893 }
 894
 895 #endif /* CONFIG_ATH10K_DEBUGFS */
 896
 897 #ifdef CONFIG_ATH10K_DEBUG
 898 void ath10k_dbg(enum ath10k_debug_mask mask, const char *fmt, ...)
 899 {
 900         struct va_format vaf;
 901         va_list args;
 902
 903         va_start(args, fmt);
 904
 905         vaf.fmt = fmt;
 906         vaf.va = &args;
 907
 908         if (ath10k_debug_mask & mask)
 909                 ath10k_printk(KERN_DEBUG, "%pV", &vaf);
 910
 911         trace_ath10k_log_dbg(mask, &vaf);
 912
 913         va_end(args);
 914 }
 915 EXPORT_SYMBOL(ath10k_dbg);
 916
 917 void ath10k_dbg_dump(enum ath10k_debug_mask mask,
 918                      const char *msg, const char *prefix,
 919                      const void *buf, size_t len)
 920 {
 921         if (ath10k_debug_mask & mask) {
 922                 if (msg)
 923                         ath10k_dbg(mask, "%s\n", msg);
 924
 925                 print_hex_dump_bytes(prefix, DUMP_PREFIX_OFFSET, buf, len);
 926         }
 927
 928         /* tracing code doesn't like null strings :/ */
 929         trace_ath10k_log_dbg_dump(msg ? msg : "", prefix ? prefix : "",
 930                                   buf, len);
 931 }
 932 EXPORT_SYMBOL(ath10k_dbg_dump);
 933
 934 #endif /* CONFIG_ATH10K_DEBUG */