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1/*
2 * Copyright (c) 2008-2011 Atheros Communications Inc.
3 * Copyright (c) 2011 Neratec Solutions AG
4 *
5 * Permission to use, copy, modify, and/or distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
8 *
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16 */
17
18#include <linux/debugfs.h>
19#include <linux/export.h>
20
21#include "ath9k.h"
22#include "dfs_debug.h"
23#include "../dfs_pattern_detector.h"
24
25static struct ath_dfs_pool_stats dfs_pool_stats = { 0 };
26
27#define ATH9K_DFS_STAT(s, p) \
28 len += scnprintf(buf + len, size - len, "%28s : %10u\n", s, \
29 sc->debug.stats.dfs_stats.p)
30#define ATH9K_DFS_POOL_STAT(s, p) \
31 len += scnprintf(buf + len, size - len, "%28s : %10u\n", s, \
32 dfs_pool_stats.p);
33
34static ssize_t read_file_dfs(struct file *file, char __user *user_buf,
35 size_t count, loff_t *ppos)
36{
37 struct ath_softc *sc = file->private_data;
38 struct ath9k_hw_version *hw_ver = &sc->sc_ah->hw_version;
39 char *buf;
40 unsigned int len = 0, size = 8000;
41 ssize_t retval = 0;
42
43 buf = kzalloc(size, GFP_KERNEL);
44 if (buf == NULL)
45 return -ENOMEM;
46
47 len += scnprintf(buf + len, size - len, "DFS support for "
48 "macVersion = 0x%x, macRev = 0x%x: %s\n",
49 hw_ver->macVersion, hw_ver->macRev,
50 (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_DFS) ?
51 "enabled" : "disabled");
52
53 if (!sc->dfs_detector) {
54 len += scnprintf(buf + len, size - len,
55 "DFS detector not enabled\n");
56 goto exit;
57 }
58
59 dfs_pool_stats = sc->dfs_detector->get_stats(sc->dfs_detector);
60
61 len += scnprintf(buf + len, size - len, "Pulse detector statistics:\n");
62 ATH9K_DFS_STAT("pulse events reported ", pulses_total);
63 ATH9K_DFS_STAT("invalid pulse events ", pulses_no_dfs);
64 ATH9K_DFS_STAT("DFS pulses detected ", pulses_detected);
65 ATH9K_DFS_STAT("Datalen discards ", datalen_discards);
66 ATH9K_DFS_STAT("RSSI discards ", rssi_discards);
67 ATH9K_DFS_STAT("BW info discards ", bwinfo_discards);
68 ATH9K_DFS_STAT("Primary channel pulses ", pri_phy_errors);
69 ATH9K_DFS_STAT("Secondary channel pulses", ext_phy_errors);
70 ATH9K_DFS_STAT("Dual channel pulses ", dc_phy_errors);
71 len += scnprintf(buf + len, size - len, "Radar detector statistics "
72 "(current DFS region: %d)\n",
73 sc->dfs_detector->region);
74 ATH9K_DFS_STAT("Pulse events processed ", pulses_processed);
75 ATH9K_DFS_STAT("Radars detected ", radar_detected);
76 len += scnprintf(buf + len, size - len, "Global Pool statistics:\n");
77 ATH9K_DFS_POOL_STAT("Pool references ", pool_reference);
78 ATH9K_DFS_POOL_STAT("Pulses allocated ", pulse_allocated);
79 ATH9K_DFS_POOL_STAT("Pulses alloc error ", pulse_alloc_error);
80 ATH9K_DFS_POOL_STAT("Pulses in use ", pulse_used);
81 ATH9K_DFS_POOL_STAT("Seqs. allocated ", pseq_allocated);
82 ATH9K_DFS_POOL_STAT("Seqs. alloc error ", pseq_alloc_error);
83 ATH9K_DFS_POOL_STAT("Seqs. in use ", pseq_used);
84
85exit:
86 if (len > size)
87 len = size;
88
89 retval = simple_read_from_buffer(user_buf, count, ppos, buf, len);
90 kfree(buf);
91
92 return retval;
93}
94
95/* magic number to prevent accidental reset of DFS statistics */
96#define DFS_STATS_RESET_MAGIC 0x80000000
97static ssize_t write_file_dfs(struct file *file, const char __user *user_buf,
98 size_t count, loff_t *ppos)
99{
100 struct ath_softc *sc = file->private_data;
101 unsigned long val;
102 ssize_t ret;
103
104 ret = kstrtoul_from_user(user_buf, count, 0, &val);
105 if (ret)
106 return ret;
107 if (val == DFS_STATS_RESET_MAGIC)
108 memset(&sc->debug.stats.dfs_stats, 0,
109 sizeof(sc->debug.stats.dfs_stats));
110 return count;
111}
112
113static ssize_t write_file_simulate_radar(struct file *file,
114 const char __user *user_buf,
115 size_t count, loff_t *ppos)
116{
117 struct ath_softc *sc = file->private_data;
118
119 ieee80211_radar_detected(sc->hw);
120
121 return count;
122}
123
124static const struct file_operations fops_simulate_radar = {
125 .write = write_file_simulate_radar,
126 .open = simple_open,
127 .owner = THIS_MODULE,
128 .llseek = default_llseek,
129};
130
131static const struct file_operations fops_dfs_stats = {
132 .read = read_file_dfs,
133 .write = write_file_dfs,
134 .open = simple_open,
135 .owner = THIS_MODULE,
136 .llseek = default_llseek,
137};
138
139void ath9k_dfs_init_debug(struct ath_softc *sc)
140{
141 debugfs_create_file("dfs_stats", 0400,
142 sc->debug.debugfs_phy, sc, &fops_dfs_stats);
143 debugfs_create_file("dfs_simulate_radar", 0200,
144 sc->debug.debugfs_phy, sc, &fops_simulate_radar);
145}
1/*
2 * Copyright (c) 2008-2011 Atheros Communications Inc.
3 * Copyright (c) 2011 Neratec Solutions AG
4 *
5 * Permission to use, copy, modify, and/or distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
8 *
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16 */
17
18#include <linux/debugfs.h>
19#include <linux/export.h>
20
21#include "ath9k.h"
22#include "dfs_debug.h"
23#include "../dfs_pattern_detector.h"
24
25static struct ath_dfs_pool_stats dfs_pool_stats = { 0 };
26
27#define ATH9K_DFS_STAT(s, p) \
28 len += scnprintf(buf + len, size - len, "%28s : %10u\n", s, \
29 sc->debug.stats.dfs_stats.p)
30#define ATH9K_DFS_POOL_STAT(s, p) \
31 len += scnprintf(buf + len, size - len, "%28s : %10u\n", s, \
32 dfs_pool_stats.p);
33
34static ssize_t read_file_dfs(struct file *file, char __user *user_buf,
35 size_t count, loff_t *ppos)
36{
37 struct ath_softc *sc = file->private_data;
38 struct ath9k_hw_version *hw_ver = &sc->sc_ah->hw_version;
39 char *buf;
40 unsigned int len = 0, size = 8000;
41 ssize_t retval = 0;
42
43 buf = kzalloc(size, GFP_KERNEL);
44 if (buf == NULL)
45 return -ENOMEM;
46
47 len += scnprintf(buf + len, size - len, "DFS support for "
48 "macVersion = 0x%x, macRev = 0x%x: %s\n",
49 hw_ver->macVersion, hw_ver->macRev,
50 (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_DFS) ?
51 "enabled" : "disabled");
52
53 if (!sc->dfs_detector) {
54 len += scnprintf(buf + len, size - len,
55 "DFS detector not enabled\n");
56 goto exit;
57 }
58
59 dfs_pool_stats = sc->dfs_detector->get_stats(sc->dfs_detector);
60
61 len += scnprintf(buf + len, size - len, "Pulse detector statistics:\n");
62 ATH9K_DFS_STAT("pulse events reported ", pulses_total);
63 ATH9K_DFS_STAT("invalid pulse events ", pulses_no_dfs);
64 ATH9K_DFS_STAT("DFS pulses detected ", pulses_detected);
65 ATH9K_DFS_STAT("Datalen discards ", datalen_discards);
66 ATH9K_DFS_STAT("RSSI discards ", rssi_discards);
67 ATH9K_DFS_STAT("BW info discards ", bwinfo_discards);
68 ATH9K_DFS_STAT("Primary channel pulses ", pri_phy_errors);
69 ATH9K_DFS_STAT("Secondary channel pulses", ext_phy_errors);
70 ATH9K_DFS_STAT("Dual channel pulses ", dc_phy_errors);
71 len += scnprintf(buf + len, size - len, "Radar detector statistics "
72 "(current DFS region: %d)\n",
73 sc->dfs_detector->region);
74 ATH9K_DFS_STAT("Pulse events processed ", pulses_processed);
75 ATH9K_DFS_STAT("Radars detected ", radar_detected);
76 len += scnprintf(buf + len, size - len, "Global Pool statistics:\n");
77 ATH9K_DFS_POOL_STAT("Pool references ", pool_reference);
78 ATH9K_DFS_POOL_STAT("Pulses allocated ", pulse_allocated);
79 ATH9K_DFS_POOL_STAT("Pulses alloc error ", pulse_alloc_error);
80 ATH9K_DFS_POOL_STAT("Pulses in use ", pulse_used);
81 ATH9K_DFS_POOL_STAT("Seqs. allocated ", pseq_allocated);
82 ATH9K_DFS_POOL_STAT("Seqs. alloc error ", pseq_alloc_error);
83 ATH9K_DFS_POOL_STAT("Seqs. in use ", pseq_used);
84
85exit:
86 if (len > size)
87 len = size;
88
89 retval = simple_read_from_buffer(user_buf, count, ppos, buf, len);
90 kfree(buf);
91
92 return retval;
93}
94
95/* magic number to prevent accidental reset of DFS statistics */
96#define DFS_STATS_RESET_MAGIC 0x80000000
97static ssize_t write_file_dfs(struct file *file, const char __user *user_buf,
98 size_t count, loff_t *ppos)
99{
100 struct ath_softc *sc = file->private_data;
101 unsigned long val;
102 ssize_t ret;
103
104 ret = kstrtoul_from_user(user_buf, count, 0, &val);
105 if (ret)
106 return ret;
107 if (val == DFS_STATS_RESET_MAGIC)
108 memset(&sc->debug.stats.dfs_stats, 0,
109 sizeof(sc->debug.stats.dfs_stats));
110 return count;
111}
112
113static ssize_t write_file_simulate_radar(struct file *file,
114 const char __user *user_buf,
115 size_t count, loff_t *ppos)
116{
117 struct ath_softc *sc = file->private_data;
118
119 ieee80211_radar_detected(sc->hw);
120
121 return count;
122}
123
124static const struct file_operations fops_simulate_radar = {
125 .write = write_file_simulate_radar,
126 .open = simple_open,
127 .owner = THIS_MODULE,
128 .llseek = default_llseek,
129};
130
131static const struct file_operations fops_dfs_stats = {
132 .read = read_file_dfs,
133 .write = write_file_dfs,
134 .open = simple_open,
135 .owner = THIS_MODULE,
136 .llseek = default_llseek,
137};
138
139void ath9k_dfs_init_debug(struct ath_softc *sc)
140{
141 debugfs_create_file("dfs_stats", 0400,
142 sc->debug.debugfs_phy, sc, &fops_dfs_stats);
143 debugfs_create_file("dfs_simulate_radar", 0200,
144 sc->debug.debugfs_phy, sc, &fops_simulate_radar);
145}