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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
24
25struct ath_dfs_pool_stats global_dfs_pool_stats = { 0 };
26
27#define ATH9K_DFS_STAT(s, p) \
28 len += snprintf(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 += snprintf(buf + len, size - len, "%28s : %10u\n", s, \
32 global_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 += snprintf(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 len += snprintf(buf + len, size - len, "Pulse detector statistics:\n");
53 ATH9K_DFS_STAT("pulse events reported ", pulses_total);
54 ATH9K_DFS_STAT("invalid pulse events ", pulses_no_dfs);
55 ATH9K_DFS_STAT("DFS pulses detected ", pulses_detected);
56 ATH9K_DFS_STAT("Datalen discards ", datalen_discards);
57 ATH9K_DFS_STAT("RSSI discards ", rssi_discards);
58 ATH9K_DFS_STAT("BW info discards ", bwinfo_discards);
59 ATH9K_DFS_STAT("Primary channel pulses ", pri_phy_errors);
60 ATH9K_DFS_STAT("Secondary channel pulses", ext_phy_errors);
61 ATH9K_DFS_STAT("Dual channel pulses ", dc_phy_errors);
62 len += snprintf(buf + len, size - len, "Radar detector statistics "
63 "(current DFS region: %d)\n", sc->dfs_detector->region);
64 ATH9K_DFS_STAT("Pulse events processed ", pulses_processed);
65 ATH9K_DFS_STAT("Radars detected ", radar_detected);
66 len += snprintf(buf + len, size - len, "Global Pool statistics:\n");
67 ATH9K_DFS_POOL_STAT("Pool references ", pool_reference);
68 ATH9K_DFS_POOL_STAT("Pulses allocated ", pulse_allocated);
69 ATH9K_DFS_POOL_STAT("Pulses alloc error ", pulse_alloc_error);
70 ATH9K_DFS_POOL_STAT("Pulses in use ", pulse_used);
71 ATH9K_DFS_POOL_STAT("Seqs. allocated ", pseq_allocated);
72 ATH9K_DFS_POOL_STAT("Seqs. alloc error ", pseq_alloc_error);
73 ATH9K_DFS_POOL_STAT("Seqs. in use ", pseq_used);
74
75 if (len > size)
76 len = size;
77
78 retval = simple_read_from_buffer(user_buf, count, ppos, buf, len);
79 kfree(buf);
80
81 return retval;
82}
83
84
85#define DFS_STATS_RESET_MAGIC 0x80000000
86static ssize_t write_file_dfs(struct file *file, const char __user *user_buf,
87 size_t count, loff_t *ppos)
88{
89 struct ath_softc *sc = file->private_data;
90 unsigned long val;
91 char buf[32];
92 ssize_t len;
93
94 len = min(count, sizeof(buf) - 1);
95 if (copy_from_user(buf, user_buf, len))
96 return -EFAULT;
97
98 buf[len] = '\0';
99 if (strict_strtoul(buf, 0, &val))
100 return -EINVAL;
101
102 if (val == DFS_STATS_RESET_MAGIC)
103 memset(&sc->debug.stats.dfs_stats, 0,
104 sizeof(sc->debug.stats.dfs_stats));
105 return count;
106}
107
108static ssize_t write_file_simulate_radar(struct file *file,
109 const char __user *user_buf,
110 size_t count, loff_t *ppos)
111{
112 struct ath_softc *sc = file->private_data;
113
114 ieee80211_radar_detected(sc->hw);
115
116 return count;
117}
118
119static const struct file_operations fops_simulate_radar = {
120 .write = write_file_simulate_radar,
121 .open = simple_open,
122 .owner = THIS_MODULE,
123 .llseek = default_llseek,
124};
125
126static const struct file_operations fops_dfs_stats = {
127 .read = read_file_dfs,
128 .write = write_file_dfs,
129 .open = simple_open,
130 .owner = THIS_MODULE,
131 .llseek = default_llseek,
132};
133
134void ath9k_dfs_init_debug(struct ath_softc *sc)
135{
136 debugfs_create_file("dfs_stats", S_IRUSR,
137 sc->debug.debugfs_phy, sc, &fops_dfs_stats);
138 debugfs_create_file("dfs_simulate_radar", S_IWUSR,
139 sc->debug.debugfs_phy, sc, &fops_simulate_radar);
140}
141
