kernel/drivers/net/wireless/cw1200/debug.c

   1 /*
   2  * mac80211 glue code for mac80211 ST-Ericsson CW1200 drivers
   3  * DebugFS code
   4  *
   5  * Copyright (c) 2010, ST-Ericsson
   6  * Author: Dmitry Tarnyagin <dmitry.tarnyagin@lockless.no>
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 as
  10  * published by the Free Software Foundation.
  11  */
  12
  13 #include <linux/module.h>
  14 #include <linux/debugfs.h>
  15 #include <linux/seq_file.h>
  16 #include "cw1200.h"
  17 #include "debug.h"
  18 #include "fwio.h"
  19
  20 /* join_status */
  21 static const char * const cw1200_debug_join_status[] = {
  22         "passive",
  23         "monitor",
  24         "station (joining)",
  25         "station (not authenticated yet)",
  26         "station",
  27         "adhoc",
  28         "access point",
  29 };
  30
  31 /* WSM_JOIN_PREAMBLE_... */
  32 static const char * const cw1200_debug_preamble[] = {
  33         "long",
  34         "short",
  35         "long on 1 and 2 Mbps",
  36 };
  37
  38
  39 static const char * const cw1200_debug_link_id[] = {
  40         "OFF",
  41         "REQ",
  42         "SOFT",
  43         "HARD",
  44         "RESET",
  45         "RESET_REMAP",
  46 };
  47
  48 static const char *cw1200_debug_mode(int mode)
  49 {
  50         switch (mode) {
  51         case NL80211_IFTYPE_UNSPECIFIED:
  52                 return "unspecified";
  53         case NL80211_IFTYPE_MONITOR:
  54                 return "monitor";
  55         case NL80211_IFTYPE_STATION:
  56                 return "station";
  57         case NL80211_IFTYPE_ADHOC:
  58                 return "adhoc";
  59         case NL80211_IFTYPE_MESH_POINT:
  60                 return "mesh point";
  61         case NL80211_IFTYPE_AP:
  62                 return "access point";
  63         case NL80211_IFTYPE_P2P_CLIENT:
  64                 return "p2p client";
  65         case NL80211_IFTYPE_P2P_GO:
  66                 return "p2p go";
  67         default:
  68                 return "unsupported";
  69         }
  70 }
  71
  72 static void cw1200_queue_status_show(struct seq_file *seq,
  73                                      struct cw1200_queue *q)
  74 {
  75         int i;
  76         seq_printf(seq, "Queue       %d:\n", q->queue_id);
  77         seq_printf(seq, "  capacity: %zu\n", q->capacity);
  78         seq_printf(seq, "  queued:   %zu\n", q->num_queued);
  79         seq_printf(seq, "  pending:  %zu\n", q->num_pending);
  80         seq_printf(seq, "  sent:     %zu\n", q->num_sent);
  81         seq_printf(seq, "  locked:   %s\n", q->tx_locked_cnt ? "yes" : "no");
  82         seq_printf(seq, "  overfull: %s\n", q->overfull ? "yes" : "no");
  83         seq_puts(seq,   "  link map: 0-> ");
  84         for (i = 0; i < q->stats->map_capacity; ++i)
  85                 seq_printf(seq, "%.2d ", q->link_map_cache[i]);
  86         seq_printf(seq, "<-%zu\n", q->stats->map_capacity);
  87 }
  88
  89 static void cw1200_debug_print_map(struct seq_file *seq,
  90                                    struct cw1200_common *priv,
  91                                    const char *label,
  92                                    u32 map)
  93 {
  94         int i;
  95         seq_printf(seq, "%s0-> ", label);
  96         for (i = 0; i < priv->tx_queue_stats.map_capacity; ++i)
  97                 seq_printf(seq, "%s ", (map & BIT(i)) ? "**" : "..");
  98         seq_printf(seq, "<-%zu\n", priv->tx_queue_stats.map_capacity - 1);
  99 }
 100
 101 static int cw1200_status_show(struct seq_file *seq, void *v)
 102 {
 103         int i;
 104         struct list_head *item;
 105         struct cw1200_common *priv = seq->private;
 106         struct cw1200_debug_priv *d = priv->debug;
 107
 108         seq_puts(seq,   "CW1200 Wireless LAN driver status\n");
 109         seq_printf(seq, "Hardware:   %d.%d\n",
 110                    priv->wsm_caps.hw_id,
 111                    priv->wsm_caps.hw_subid);
 112         seq_printf(seq, "Firmware:   %s %d.%d\n",
 113                    cw1200_fw_types[priv->wsm_caps.fw_type],
 114                    priv->wsm_caps.fw_ver,
 115                    priv->wsm_caps.fw_build);
 116         seq_printf(seq, "FW API:     %d\n",
 117                    priv->wsm_caps.fw_api);
 118         seq_printf(seq, "FW caps:    0x%.4X\n",
 119                    priv->wsm_caps.fw_cap);
 120         seq_printf(seq, "FW label:  '%s'\n",
 121                    priv->wsm_caps.fw_label);
 122         seq_printf(seq, "Mode:       %s%s\n",
 123                    cw1200_debug_mode(priv->mode),
 124                    priv->listening ? " (listening)" : "");
 125         seq_printf(seq, "Join state: %s\n",
 126                    cw1200_debug_join_status[priv->join_status]);
 127         if (priv->channel)
 128                 seq_printf(seq, "Channel:    %d%s\n",
 129                            priv->channel->hw_value,
 130                            priv->channel_switch_in_progress ?
 131                            " (switching)" : "");
 132         if (priv->rx_filter.promiscuous)
 133                 seq_puts(seq,   "Filter:     promisc\n");
 134         else if (priv->rx_filter.fcs)
 135                 seq_puts(seq,   "Filter:     fcs\n");
 136         if (priv->rx_filter.bssid)
 137                 seq_puts(seq,   "Filter:     bssid\n");
 138         if (!priv->disable_beacon_filter)
 139                 seq_puts(seq,   "Filter:     beacons\n");
 140
 141         if (priv->enable_beacon ||
 142             priv->mode == NL80211_IFTYPE_AP ||
 143             priv->mode == NL80211_IFTYPE_ADHOC ||
 144             priv->mode == NL80211_IFTYPE_MESH_POINT ||
 145             priv->mode == NL80211_IFTYPE_P2P_GO)
 146                 seq_printf(seq, "Beaconing:  %s\n",
 147                            priv->enable_beacon ?
 148                            "enabled" : "disabled");
 149
 150         for (i = 0; i < 4; ++i)
 151                 seq_printf(seq, "EDCA(%d):    %d, %d, %d, %d, %d\n", i,
 152                            priv->edca.params[i].cwmin,
 153                            priv->edca.params[i].cwmax,
 154                            priv->edca.params[i].aifns,
 155                            priv->edca.params[i].txop_limit,
 156                            priv->edca.params[i].max_rx_lifetime);
 157
 158         if (priv->join_status == CW1200_JOIN_STATUS_STA) {
 159                 static const char *pm_mode = "unknown";
 160                 switch (priv->powersave_mode.mode) {
 161                 case WSM_PSM_ACTIVE:
 162                         pm_mode = "off";
 163                         break;
 164                 case WSM_PSM_PS:
 165                         pm_mode = "on";
 166                         break;
 167                 case WSM_PSM_FAST_PS:
 168                         pm_mode = "dynamic";
 169                         break;
 170                 }
 171                 seq_printf(seq, "Preamble:   %s\n",
 172                            cw1200_debug_preamble[priv->association_mode.preamble]);
 173                 seq_printf(seq, "AMPDU spcn: %d\n",
 174                            priv->association_mode.mpdu_start_spacing);
 175                 seq_printf(seq, "Basic rate: 0x%.8X\n",
 176                            le32_to_cpu(priv->association_mode.basic_rate_set));
 177                 seq_printf(seq, "Bss lost:   %d beacons\n",
 178                            priv->bss_params.beacon_lost_count);
 179                 seq_printf(seq, "AID:        %d\n",
 180                            priv->bss_params.aid);
 181                 seq_printf(seq, "Rates:      0x%.8X\n",
 182                            priv->bss_params.operational_rate_set);
 183                 seq_printf(seq, "Powersave:  %s\n", pm_mode);
 184         }
 185         seq_printf(seq, "HT:         %s\n",
 186                    cw1200_is_ht(&priv->ht_info) ? "on" : "off");
 187         if (cw1200_is_ht(&priv->ht_info)) {
 188                 seq_printf(seq, "Greenfield: %s\n",
 189                            cw1200_ht_greenfield(&priv->ht_info) ? "yes" : "no");
 190                 seq_printf(seq, "AMPDU dens: %d\n",
 191                            cw1200_ht_ampdu_density(&priv->ht_info));
 192         }
 193         seq_printf(seq, "RSSI thold: %d\n",
 194                    priv->cqm_rssi_thold);
 195         seq_printf(seq, "RSSI hyst:  %d\n",
 196                    priv->cqm_rssi_hyst);
 197         seq_printf(seq, "Long retr:  %d\n",
 198                    priv->long_frame_max_tx_count);
 199         seq_printf(seq, "Short retr: %d\n",
 200                    priv->short_frame_max_tx_count);
 201         spin_lock_bh(&priv->tx_policy_cache.lock);
 202         i = 0;
 203         list_for_each(item, &priv->tx_policy_cache.used)
 204                 ++i;
 205         spin_unlock_bh(&priv->tx_policy_cache.lock);
 206         seq_printf(seq, "RC in use:  %d\n", i);
 207
 208         seq_puts(seq, "\n");
 209         for (i = 0; i < 4; ++i) {
 210                 cw1200_queue_status_show(seq, &priv->tx_queue[i]);
 211                 seq_puts(seq, "\n");
 212         }
 213
 214         cw1200_debug_print_map(seq, priv, "Link map:   ",
 215                                priv->link_id_map);
 216         cw1200_debug_print_map(seq, priv, "Asleep map: ",
 217                                priv->sta_asleep_mask);
 218         cw1200_debug_print_map(seq, priv, "PSPOLL map: ",
 219                                priv->pspoll_mask);
 220
 221         seq_puts(seq, "\n");
 222
 223         for (i = 0; i < CW1200_MAX_STA_IN_AP_MODE; ++i) {
 224                 if (priv->link_id_db[i].status) {
 225                         seq_printf(seq, "Link %d:     %s, %pM\n",
 226                                    i + 1,
 227                                    cw1200_debug_link_id[priv->link_id_db[i].status],
 228                                    priv->link_id_db[i].mac);
 229                 }
 230         }
 231
 232         seq_puts(seq, "\n");
 233
 234         seq_printf(seq, "BH status:  %s\n",
 235                    atomic_read(&priv->bh_term) ? "terminated" : "alive");
 236         seq_printf(seq, "Pending RX: %d\n",
 237                    atomic_read(&priv->bh_rx));
 238         seq_printf(seq, "Pending TX: %d\n",
 239                    atomic_read(&priv->bh_tx));
 240         if (priv->bh_error)
 241                 seq_printf(seq, "BH errcode: %d\n",
 242                            priv->bh_error);
 243         seq_printf(seq, "TX bufs:    %d x %d bytes\n",
 244                    priv->wsm_caps.input_buffers,
 245                    priv->wsm_caps.input_buffer_size);
 246         seq_printf(seq, "Used bufs:  %d\n",
 247                    priv->hw_bufs_used);
 248         seq_printf(seq, "Powermgmt:  %s\n",
 249                    priv->powersave_enabled ? "on" : "off");
 250         seq_printf(seq, "Device:     %s\n",
 251                    priv->device_can_sleep ? "asleep" : "awake");
 252
 253         spin_lock(&priv->wsm_cmd.lock);
 254         seq_printf(seq, "WSM status: %s\n",
 255                    priv->wsm_cmd.done ? "idle" : "active");
 256         seq_printf(seq, "WSM cmd:    0x%.4X (%td bytes)\n",
 257                    priv->wsm_cmd.cmd, priv->wsm_cmd.len);
 258         seq_printf(seq, "WSM retval: %d\n",
 259                    priv->wsm_cmd.ret);
 260         spin_unlock(&priv->wsm_cmd.lock);
 261
 262         seq_printf(seq, "Datapath:   %s\n",
 263                    atomic_read(&priv->tx_lock) ? "locked" : "unlocked");
 264         if (atomic_read(&priv->tx_lock))
 265                 seq_printf(seq, "TXlock cnt: %d\n",
 266                            atomic_read(&priv->tx_lock));
 267
 268         seq_printf(seq, "TXed:       %d\n",
 269                    d->tx);
 270         seq_printf(seq, "AGG TXed:   %d\n",
 271                    d->tx_agg);
 272         seq_printf(seq, "MULTI TXed: %d (%d)\n",
 273                    d->tx_multi, d->tx_multi_frames);
 274         seq_printf(seq, "RXed:       %d\n",
 275                    d->rx);
 276         seq_printf(seq, "AGG RXed:   %d\n",
 277                    d->rx_agg);
 278         seq_printf(seq, "TX miss:    %d\n",
 279                    d->tx_cache_miss);
 280         seq_printf(seq, "TX align:   %d\n",
 281                    d->tx_align);
 282         seq_printf(seq, "TX burst:   %d\n",
 283                    d->tx_burst);
 284         seq_printf(seq, "TX TTL:     %d\n",
 285                    d->tx_ttl);
 286         seq_printf(seq, "Scan:       %s\n",
 287                    atomic_read(&priv->scan.in_progress) ? "active" : "idle");
 288
 289         return 0;
 290 }
 291
 292 static int cw1200_status_open(struct inode *inode, struct file *file)
 293 {
 294         return single_open(file, &cw1200_status_show,
 295                 inode->i_private);
 296 }
 297
 298 static const struct file_operations fops_status = {
 299         .open = cw1200_status_open,
 300         .read = seq_read,
 301         .llseek = seq_lseek,
 302         .release = single_release,
 303         .owner = THIS_MODULE,
 304 };
 305
 306 static int cw1200_counters_show(struct seq_file *seq, void *v)
 307 {
 308         int ret;
 309         struct cw1200_common *priv = seq->private;
 310         struct wsm_mib_counters_table counters;
 311
 312         ret = wsm_get_counters_table(priv, &counters);
 313         if (ret)
 314                 return ret;
 315
 316 #define PUT_COUNTER(tab, name) \
 317         seq_printf(seq, "%s:" tab "%d\n", #name, \
 318                 __le32_to_cpu(counters.name))
 319
 320         PUT_COUNTER("\t\t", plcp_errors);
 321         PUT_COUNTER("\t\t", fcs_errors);
 322         PUT_COUNTER("\t\t", tx_packets);
 323         PUT_COUNTER("\t\t", rx_packets);
 324         PUT_COUNTER("\t\t", rx_packet_errors);
 325         PUT_COUNTER("\t",   rx_decryption_failures);
 326         PUT_COUNTER("\t\t", rx_mic_failures);
 327         PUT_COUNTER("\t",   rx_no_key_failures);
 328         PUT_COUNTER("\t",   tx_multicast_frames);
 329         PUT_COUNTER("\t",   tx_frames_success);
 330         PUT_COUNTER("\t",   tx_frame_failures);
 331         PUT_COUNTER("\t",   tx_frames_retried);
 332         PUT_COUNTER("\t",   tx_frames_multi_retried);
 333         PUT_COUNTER("\t",   rx_frame_duplicates);
 334         PUT_COUNTER("\t\t", rts_success);
 335         PUT_COUNTER("\t\t", rts_failures);
 336         PUT_COUNTER("\t\t", ack_failures);
 337         PUT_COUNTER("\t",   rx_multicast_frames);
 338         PUT_COUNTER("\t",   rx_frames_success);
 339         PUT_COUNTER("\t",   rx_cmac_icv_errors);
 340         PUT_COUNTER("\t\t", rx_cmac_replays);
 341         PUT_COUNTER("\t",   rx_mgmt_ccmp_replays);
 342
 343 #undef PUT_COUNTER
 344
 345         return 0;
 346 }
 347
 348 static int cw1200_counters_open(struct inode *inode, struct file *file)
 349 {
 350         return single_open(file, &cw1200_counters_show,
 351                 inode->i_private);
 352 }
 353
 354 static const struct file_operations fops_counters = {
 355         .open = cw1200_counters_open,
 356         .read = seq_read,
 357         .llseek = seq_lseek,
 358         .release = single_release,
 359         .owner = THIS_MODULE,
 360 };
 361
 362 static ssize_t cw1200_wsm_dumps(struct file *file,
 363         const char __user *user_buf, size_t count, loff_t *ppos)
 364 {
 365         struct cw1200_common *priv = file->private_data;
 366         char buf[1];
 367
 368         if (!count)
 369                 return -EINVAL;
 370         if (copy_from_user(buf, user_buf, 1))
 371                 return -EFAULT;
 372
 373         if (buf[0] == '1')
 374                 priv->wsm_enable_wsm_dumps = 1;
 375         else
 376                 priv->wsm_enable_wsm_dumps = 0;
 377
 378         return count;
 379 }
 380
 381 static const struct file_operations fops_wsm_dumps = {
 382         .open = simple_open,
 383         .write = cw1200_wsm_dumps,
 384         .llseek = default_llseek,
 385 };
 386
 387 int cw1200_debug_init(struct cw1200_common *priv)
 388 {
 389         int ret = -ENOMEM;
 390         struct cw1200_debug_priv *d = kzalloc(sizeof(struct cw1200_debug_priv),
 391                         GFP_KERNEL);
 392         priv->debug = d;
 393         if (!d)
 394                 return ret;
 395
 396         d->debugfs_phy = debugfs_create_dir("cw1200",
 397                                             priv->hw->wiphy->debugfsdir);
 398         if (!d->debugfs_phy)
 399                 goto err;
 400
 401         if (!debugfs_create_file("status", S_IRUSR, d->debugfs_phy,
 402                                  priv, &fops_status))
 403                 goto err;
 404
 405         if (!debugfs_create_file("counters", S_IRUSR, d->debugfs_phy,
 406                                  priv, &fops_counters))
 407                 goto err;
 408
 409         if (!debugfs_create_file("wsm_dumps", S_IWUSR, d->debugfs_phy,
 410                                  priv, &fops_wsm_dumps))
 411                 goto err;
 412
 413         return 0;
 414
 415 err:
 416         priv->debug = NULL;
 417         debugfs_remove_recursive(d->debugfs_phy);
 418         kfree(d);
 419         return ret;
 420 }
 421
 422 void cw1200_debug_release(struct cw1200_common *priv)
 423 {
 424         struct cw1200_debug_priv *d = priv->debug;
 425         if (d) {
 426                 debugfs_remove_recursive(d->debugfs_phy);
 427                 priv->debug = NULL;
 428                 kfree(d);
 429         }
 430 }