tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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 */
21static 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_... */
32static const char * const cw1200_debug_preamble[] = {
33 "long",
34 "short",
35 "long on 1 and 2 Mbps",
36};
37
38
39static const char * const cw1200_debug_link_id[] = {
40 "OFF",
41 "REQ",
42 "SOFT",
43 "HARD",
44};
45
46static 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
70static 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
87static 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
99static 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
290static 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
296static 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
304static 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
346static 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
352static 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
360static 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
379static const struct file_operations fops_wsm_dumps = {
380 .open = simple_open,
381 .write = cw1200_wsm_dumps,
382 .llseek = default_llseek,
383};
384
385int 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
413err:
414 priv->debug = NULL;
415 debugfs_remove_recursive(d->debugfs_phy);
416 kfree(d);
417 return ret;
418}
419
420void 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}