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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
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 char buf[32];
103 ssize_t len;
104
105 len = min(count, sizeof(buf) - 1);
106 if (copy_from_user(buf, user_buf, len))
107 return -EFAULT;
108
109 buf[len] = '\0';
110 if (kstrtoul(buf, 0, &val))
111 return -EINVAL;
112
113 if (val == DFS_STATS_RESET_MAGIC)
114 memset(&sc->debug.stats.dfs_stats, 0,
115 sizeof(sc->debug.stats.dfs_stats));
116 return count;
117}
118
119static ssize_t write_file_simulate_radar(struct file *file,
120 const char __user *user_buf,
121 size_t count, loff_t *ppos)
122{
123 struct ath_softc *sc = file->private_data;
124
125 ieee80211_radar_detected(sc->hw);
126
127 return count;
128}
129
130static const struct file_operations fops_simulate_radar = {
131 .write = write_file_simulate_radar,
132 .open = simple_open,
133 .owner = THIS_MODULE,
134 .llseek = default_llseek,
135};
136
137static const struct file_operations fops_dfs_stats = {
138 .read = read_file_dfs,
139 .write = write_file_dfs,
140 .open = simple_open,
141 .owner = THIS_MODULE,
142 .llseek = default_llseek,
143};
144
145void ath9k_dfs_init_debug(struct ath_softc *sc)
146{
147 debugfs_create_file("dfs_stats", S_IRUSR,
148 sc->debug.debugfs_phy, sc, &fops_dfs_stats);
149 debugfs_create_file("dfs_simulate_radar", S_IWUSR,
150 sc->debug.debugfs_phy, sc, &fops_simulate_radar);
151}
152
