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
cw1200_debug_mode(int mode)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
cw1200_queue_status_show(struct seq_file * seq,struct cw1200_queue * q)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
cw1200_debug_print_map(struct seq_file * seq,struct cw1200_common * priv,const char * label,u32 map)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
cw1200_status_show(struct seq_file * seq,void * v)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
cw1200_counters_show(struct seq_file * seq,void * v)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
cw1200_wsm_dumps(struct file * file,const char __user * user_buf,size_t count,loff_t * ppos)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
cw1200_debug_init(struct cw1200_common * priv)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
cw1200_debug_release(struct cw1200_common * priv)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 }
390