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