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 */
18static 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_... */
29static const char * const cw1200_debug_preamble[] = {
30	"long",
31	"short",
32	"long on 1 and 2 Mbps",
33};
34
35
36static const char * const cw1200_debug_link_id[] = {
37	"OFF",
38	"REQ",
39	"SOFT",
40	"HARD",
41	"RESET",
42	"RESET_REMAP",
43};
44
45static 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
69static 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
86static 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
98static 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
289DEFINE_SHOW_ATTRIBUTE(cw1200_status);
290
291static 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
333DEFINE_SHOW_ATTRIBUTE(cw1200_counters);
334
335static 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
354static const struct file_operations fops_wsm_dumps = {
355	.open = simple_open,
356	.write = cw1200_wsm_dumps,
357	.llseek = default_llseek,
358};
359
360int 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
381void 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