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 } 431