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

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * mac80211 glue code for mac80211 ST-Ericsson CW1200 drivers
   4  * DebugFS code
   5  *
   6  * Copyright (c) 2010, ST-Ericsson
   7  * Author: Dmitry Tarnyagin <dmitry.tarnyagin@lockless.no>
   8  */
   9
  10 #include <linux/module.h>
  11 #include <linux/debugfs.h>
  12 #include <linux/seq_file.h>
  13 #include "cw1200.h"
  14 #include "debug.h"
  15 #include "fwio.h"
  16
  17 /* join_status */
  18 static const char * const cw1200_debug_join_status[] = {
  19         "passive",
  20         "monitor",
  21         "station (joining)",
  22         "station (not authenticated yet)",
  23         "station",
  24         "adhoc",
  25         "access point",
  26 };
  27
  28 /* WSM_JOIN_PREAMBLE_... */
  29 static const char * const cw1200_debug_preamble[] = {
  30         "long",
  31         "short",
  32         "long on 1 and 2 Mbps",
  33 };
  34
  35
  36 static const char * const cw1200_debug_link_id[] = {
  37         "OFF",
  38         "REQ",
  39         "SOFT",
  40         "HARD",
  41         "RESET",
  42         "RESET_REMAP",
  43 };
  44
  45 static const char *cw1200_debug_mode(int mode)
  46 {
  47         switch (mode) {
  48         case NL80211_IFTYPE_UNSPECIFIED:
  49                 return "unspecified";
  50         case NL80211_IFTYPE_MONITOR:
  51                 return "monitor";
  52         case NL80211_IFTYPE_STATION:
  53                 return "station";
  54         case NL80211_IFTYPE_ADHOC:
  55                 return "adhoc";
  56         case NL80211_IFTYPE_MESH_POINT:
  57                 return "mesh point";
  58         case NL80211_IFTYPE_AP:
  59                 return "access point";
  60         case NL80211_IFTYPE_P2P_CLIENT:
  61                 return "p2p client";
  62         case NL80211_IFTYPE_P2P_GO:
  63                 return "p2p go";
  64         default:
  65                 return "unsupported";
  66         }
  67 }
  68
  69 static void cw1200_queue_status_show(struct seq_file *seq,
  70                                      struct cw1200_queue *q)
  71 {
  72         int i;
  73         seq_printf(seq, "Queue       %d:\n", q->queue_id);
  74         seq_printf(seq, "  capacity: %zu\n", q->capacity);
  75         seq_printf(seq, "  queued:   %zu\n", q->num_queued);
  76         seq_printf(seq, "  pending:  %zu\n", q->num_pending);
  77         seq_printf(seq, "  sent:     %zu\n", q->num_sent);
  78         seq_printf(seq, "  locked:   %s\n", q->tx_locked_cnt ? "yes" : "no");
  79         seq_printf(seq, "  overfull: %s\n", q->overfull ? "yes" : "no");
  80         seq_puts(seq,   "  link map: 0-> ");
  81         for (i = 0; i < q->stats->map_capacity; ++i)
  82                 seq_printf(seq, "%.2d ", q->link_map_cache[i]);
  83         seq_printf(seq, "<-%zu\n", q->stats->map_capacity);
  84 }
  85
  86 static void cw1200_debug_print_map(struct seq_file *seq,
  87                                    struct cw1200_common *priv,
  88                                    const char *label,
  89                                    u32 map)
  90 {
  91         int i;
  92         seq_printf(seq, "%s0-> ", label);
  93         for (i = 0; i < priv->tx_queue_stats.map_capacity; ++i)
  94                 seq_printf(seq, "%s ", (map & BIT(i)) ? "**" : "..");
  95         seq_printf(seq, "<-%zu\n", priv->tx_queue_stats.map_capacity - 1);
  96 }
  97
  98 static int cw1200_status_show(struct seq_file *seq, void *v)
  99 {
 100         int i;
 101         struct list_head *item;
 102         struct cw1200_common *priv = seq->private;
 103         struct cw1200_debug_priv *d = priv->debug;
 104
 105         seq_puts(seq,   "CW1200 Wireless LAN driver status\n");
 106         seq_printf(seq, "Hardware:   %d.%d\n",
 107                    priv->wsm_caps.hw_id,
 108                    priv->wsm_caps.hw_subid);
 109         seq_printf(seq, "Firmware:   %s %d.%d\n",
 110                    cw1200_fw_types[priv->wsm_caps.fw_type],
 111                    priv->wsm_caps.fw_ver,
 112                    priv->wsm_caps.fw_build);
 113         seq_printf(seq, "FW API:     %d\n",
 114                    priv->wsm_caps.fw_api);
 115         seq_printf(seq, "FW caps:    0x%.4X\n",
 116                    priv->wsm_caps.fw_cap);
 117         seq_printf(seq, "FW label:  '%s'\n",
 118                    priv->wsm_caps.fw_label);
 119         seq_printf(seq, "Mode:       %s%s\n",
 120                    cw1200_debug_mode(priv->mode),
 121                    priv->listening ? " (listening)" : "");
 122         seq_printf(seq, "Join state: %s\n",
 123                    cw1200_debug_join_status[priv->join_status]);
 124         if (priv->channel)
 125                 seq_printf(seq, "Channel:    %d%s\n",
 126                            priv->channel->hw_value,
 127                            priv->channel_switch_in_progress ?
 128                            " (switching)" : "");
 129         if (priv->rx_filter.promiscuous)
 130                 seq_puts(seq,   "Filter:     promisc\n");
 131         else if (priv->rx_filter.fcs)
 132                 seq_puts(seq,   "Filter:     fcs\n");
 133         if (priv->rx_filter.bssid)
 134                 seq_puts(seq,   "Filter:     bssid\n");
 135         if (!priv->disable_beacon_filter)
 136                 seq_puts(seq,   "Filter:     beacons\n");
 137
 138         if (priv->enable_beacon ||
 139             priv->mode == NL80211_IFTYPE_AP ||
 140             priv->mode == NL80211_IFTYPE_ADHOC ||
 141             priv->mode == NL80211_IFTYPE_MESH_POINT ||
 142             priv->mode == NL80211_IFTYPE_P2P_GO)
 143                 seq_printf(seq, "Beaconing:  %s\n",
 144                            priv->enable_beacon ?
 145                            "enabled" : "disabled");
 146
 147         for (i = 0; i < 4; ++i)
 148                 seq_printf(seq, "EDCA(%d):    %d, %d, %d, %d, %d\n", i,
 149                            priv->edca.params[i].cwmin,
 150                            priv->edca.params[i].cwmax,
 151                            priv->edca.params[i].aifns,
 152                            priv->edca.params[i].txop_limit,
 153                            priv->edca.params[i].max_rx_lifetime);
 154
 155         if (priv->join_status == CW1200_JOIN_STATUS_STA) {
 156                 static const char *pm_mode = "unknown";
 157                 switch (priv->powersave_mode.mode) {
 158                 case WSM_PSM_ACTIVE:
 159                         pm_mode = "off";
 160                         break;
 161                 case WSM_PSM_PS:
 162                         pm_mode = "on";
 163                         break;
 164                 case WSM_PSM_FAST_PS:
 165                         pm_mode = "dynamic";
 166                         break;
 167                 }
 168                 seq_printf(seq, "Preamble:   %s\n",
 169                            cw1200_debug_preamble[priv->association_mode.preamble]);
 170                 seq_printf(seq, "AMPDU spcn: %d\n",
 171                            priv->association_mode.mpdu_start_spacing);
 172                 seq_printf(seq, "Basic rate: 0x%.8X\n",
 173                            le32_to_cpu(priv->association_mode.basic_rate_set));
 174                 seq_printf(seq, "Bss lost:   %d beacons\n",
 175                            priv->bss_params.beacon_lost_count);
 176                 seq_printf(seq, "AID:        %d\n",
 177                            priv->bss_params.aid);
 178                 seq_printf(seq, "Rates:      0x%.8X\n",
 179                            priv->bss_params.operational_rate_set);
 180                 seq_printf(seq, "Powersave:  %s\n", pm_mode);
 181         }
 182         seq_printf(seq, "HT:         %s\n",
 183                    cw1200_is_ht(&priv->ht_info) ? "on" : "off");
 184         if (cw1200_is_ht(&priv->ht_info)) {
 185                 seq_printf(seq, "Greenfield: %s\n",
 186                            cw1200_ht_greenfield(&priv->ht_info) ? "yes" : "no");
 187                 seq_printf(seq, "AMPDU dens: %d\n",
 188                            cw1200_ht_ampdu_density(&priv->ht_info));
 189         }
 190         seq_printf(seq, "RSSI thold: %d\n",
 191                    priv->cqm_rssi_thold);
 192         seq_printf(seq, "RSSI hyst:  %d\n",
 193                    priv->cqm_rssi_hyst);
 194         seq_printf(seq, "Long retr:  %d\n",
 195                    priv->long_frame_max_tx_count);
 196         seq_printf(seq, "Short retr: %d\n",
 197                    priv->short_frame_max_tx_count);
 198         spin_lock_bh(&priv->tx_policy_cache.lock);
 199         i = 0;
 200         list_for_each(item, &priv->tx_policy_cache.used)
 201                 ++i;
 202         spin_unlock_bh(&priv->tx_policy_cache.lock);
 203         seq_printf(seq, "RC in use:  %d\n", i);
 204
 205         seq_puts(seq, "\n");
 206         for (i = 0; i < 4; ++i) {
 207                 cw1200_queue_status_show(seq, &priv->tx_queue[i]);
 208                 seq_puts(seq, "\n");
 209         }
 210
 211         cw1200_debug_print_map(seq, priv, "Link map:   ",
 212                                priv->link_id_map);
 213         cw1200_debug_print_map(seq, priv, "Asleep map: ",
 214                                priv->sta_asleep_mask);
 215         cw1200_debug_print_map(seq, priv, "PSPOLL map: ",
 216                                priv->pspoll_mask);
 217
 218         seq_puts(seq, "\n");
 219
 220         for (i = 0; i < CW1200_MAX_STA_IN_AP_MODE; ++i) {
 221                 if (priv->link_id_db[i].status) {
 222                         seq_printf(seq, "Link %d:     %s, %pM\n",
 223                                    i + 1,
 224                                    cw1200_debug_link_id[priv->link_id_db[i].status],
 225                                    priv->link_id_db[i].mac);
 226                 }
 227         }
 228
 229         seq_puts(seq, "\n");
 230
 231         seq_printf(seq, "BH status:  %s\n",
 232                    atomic_read(&priv->bh_term) ? "terminated" : "alive");
 233         seq_printf(seq, "Pending RX: %d\n",
 234                    atomic_read(&priv->bh_rx));
 235         seq_printf(seq, "Pending TX: %d\n",
 236                    atomic_read(&priv->bh_tx));
 237         if (priv->bh_error)
 238                 seq_printf(seq, "BH errcode: %d\n",
 239                            priv->bh_error);
 240         seq_printf(seq, "TX bufs:    %d x %d bytes\n",
 241                    priv->wsm_caps.input_buffers,
 242                    priv->wsm_caps.input_buffer_size);
 243         seq_printf(seq, "Used bufs:  %d\n",
 244                    priv->hw_bufs_used);
 245         seq_printf(seq, "Powermgmt:  %s\n",
 246                    priv->powersave_enabled ? "on" : "off");
 247         seq_printf(seq, "Device:     %s\n",
 248                    priv->device_can_sleep ? "asleep" : "awake");
 249
 250         spin_lock(&priv->wsm_cmd.lock);
 251         seq_printf(seq, "WSM status: %s\n",
 252                    priv->wsm_cmd.done ? "idle" : "active");
 253         seq_printf(seq, "WSM cmd:    0x%.4X (%td bytes)\n",
 254                    priv->wsm_cmd.cmd, priv->wsm_cmd.len);
 255         seq_printf(seq, "WSM retval: %d\n",
 256                    priv->wsm_cmd.ret);
 257         spin_unlock(&priv->wsm_cmd.lock);
 258
 259         seq_printf(seq, "Datapath:   %s\n",
 260                    atomic_read(&priv->tx_lock) ? "locked" : "unlocked");
 261         if (atomic_read(&priv->tx_lock))
 262                 seq_printf(seq, "TXlock cnt: %d\n",
 263                            atomic_read(&priv->tx_lock));
 264
 265         seq_printf(seq, "TXed:       %d\n",
 266                    d->tx);
 267         seq_printf(seq, "AGG TXed:   %d\n",
 268                    d->tx_agg);
 269         seq_printf(seq, "MULTI TXed: %d (%d)\n",
 270                    d->tx_multi, d->tx_multi_frames);
 271         seq_printf(seq, "RXed:       %d\n",
 272                    d->rx);
 273         seq_printf(seq, "AGG RXed:   %d\n",
 274                    d->rx_agg);
 275         seq_printf(seq, "TX miss:    %d\n",
 276                    d->tx_cache_miss);
 277         seq_printf(seq, "TX align:   %d\n",
 278                    d->tx_align);
 279         seq_printf(seq, "TX burst:   %d\n",
 280                    d->tx_burst);
 281         seq_printf(seq, "TX TTL:     %d\n",
 282                    d->tx_ttl);
 283         seq_printf(seq, "Scan:       %s\n",
 284                    atomic_read(&priv->scan.in_progress) ? "active" : "idle");
 285
 286         return 0;
 287 }
 288
 289 DEFINE_SHOW_ATTRIBUTE(cw1200_status);
 290
 291 static int cw1200_counters_show(struct seq_file *seq, void *v)
 292 {
 293         int ret;
 294         struct cw1200_common *priv = seq->private;
 295         struct wsm_mib_counters_table counters;
 296
 297         ret = wsm_get_counters_table(priv, &counters);
 298         if (ret)
 299                 return ret;
 300
 301 #define PUT_COUNTER(tab, name) \
 302         seq_printf(seq, "%s:" tab "%d\n", #name, \
 303                 __le32_to_cpu(counters.name))
 304
 305         PUT_COUNTER("\t\t", plcp_errors);
 306         PUT_COUNTER("\t\t", fcs_errors);
 307         PUT_COUNTER("\t\t", tx_packets);
 308         PUT_COUNTER("\t\t", rx_packets);
 309         PUT_COUNTER("\t\t", rx_packet_errors);
 310         PUT_COUNTER("\t",   rx_decryption_failures);
 311         PUT_COUNTER("\t\t", rx_mic_failures);
 312         PUT_COUNTER("\t",   rx_no_key_failures);
 313         PUT_COUNTER("\t",   tx_multicast_frames);
 314         PUT_COUNTER("\t",   tx_frames_success);
 315         PUT_COUNTER("\t",   tx_frame_failures);
 316         PUT_COUNTER("\t",   tx_frames_retried);
 317         PUT_COUNTER("\t",   tx_frames_multi_retried);
 318         PUT_COUNTER("\t",   rx_frame_duplicates);
 319         PUT_COUNTER("\t\t", rts_success);
 320         PUT_COUNTER("\t\t", rts_failures);
 321         PUT_COUNTER("\t\t", ack_failures);
 322         PUT_COUNTER("\t",   rx_multicast_frames);
 323         PUT_COUNTER("\t",   rx_frames_success);
 324         PUT_COUNTER("\t",   rx_cmac_icv_errors);
 325         PUT_COUNTER("\t\t", rx_cmac_replays);
 326         PUT_COUNTER("\t",   rx_mgmt_ccmp_replays);
 327
 328 #undef PUT_COUNTER
 329
 330         return 0;
 331 }
 332
 333 DEFINE_SHOW_ATTRIBUTE(cw1200_counters);
 334
 335 static ssize_t cw1200_wsm_dumps(struct file *file,
 336         const char __user *user_buf, size_t count, loff_t *ppos)
 337 {
 338         struct cw1200_common *priv = file->private_data;
 339         char buf[1];
 340
 341         if (!count)
 342                 return -EINVAL;
 343         if (copy_from_user(buf, user_buf, 1))
 344                 return -EFAULT;
 345
 346         if (buf[0] == '1')
 347                 priv->wsm_enable_wsm_dumps = 1;
 348         else
 349                 priv->wsm_enable_wsm_dumps = 0;
 350
 351         return count;
 352 }
 353
 354 static const struct file_operations fops_wsm_dumps = {
 355         .open = simple_open,
 356         .write = cw1200_wsm_dumps,
 357         .llseek = default_llseek,
 358 };
 359
 360 int cw1200_debug_init(struct cw1200_common *priv)
 361 {
 362         int ret = -ENOMEM;
 363         struct cw1200_debug_priv *d = kzalloc(sizeof(struct cw1200_debug_priv),
 364                         GFP_KERNEL);
 365         priv->debug = d;
 366         if (!d)
 367                 return ret;
 368
 369         d->debugfs_phy = debugfs_create_dir("cw1200",
 370                                             priv->hw->wiphy->debugfsdir);
 371         debugfs_create_file("status", 0400, d->debugfs_phy, priv,
 372                             &cw1200_status_fops);
 373         debugfs_create_file("counters", 0400, d->debugfs_phy, priv,
 374                             &cw1200_counters_fops);
 375         debugfs_create_file("wsm_dumps", 0200, d->debugfs_phy, priv,
 376                             &fops_wsm_dumps);
 377
 378         return 0;
 379 }
 380
 381 void cw1200_debug_release(struct cw1200_common *priv)
 382 {
 383         struct cw1200_debug_priv *d = priv->debug;
 384         if (d) {
 385                 debugfs_remove_recursive(d->debugfs_phy);
 386                 priv->debug = NULL;
 387                 kfree(d);
 388         }
 389 }