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6ee159e2 ZK |
1 | /* |
2 | * Copyright (c) 2012 Neratec Solutions AG | |
3 | * | |
4 | * Permission to use, copy, modify, and/or distribute this software for any | |
5 | * purpose with or without fee is hereby granted, provided that the above | |
6 | * copyright notice and this permission notice appear in all copies. | |
7 | * | |
8 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES | |
9 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF | |
10 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR | |
11 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES | |
12 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
13 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | |
14 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. | |
15 | */ | |
16 | ||
17 | #ifndef DFS_PRI_DETECTOR_H | |
18 | #define DFS_PRI_DETECTOR_H | |
19 | ||
20 | #include <linux/list.h> | |
21 | ||
d265214b JD |
22 | extern struct ath_dfs_pool_stats global_dfs_pool_stats; |
23 | ||
ca21cfde ZK |
24 | /** |
25 | * struct pri_sequence - sequence of pulses matching one PRI | |
26 | * @head: list_head | |
27 | * @pri: pulse repetition interval (PRI) in usecs | |
28 | * @dur: duration of sequence in usecs | |
29 | * @count: number of pulses in this sequence | |
30 | * @count_falses: number of not matching pulses in this sequence | |
31 | * @first_ts: time stamp of first pulse in usecs | |
32 | * @last_ts: time stamp of last pulse in usecs | |
33 | * @deadline_ts: deadline when this sequence becomes invalid (first_ts + dur) | |
34 | */ | |
35 | struct pri_sequence { | |
36 | struct list_head head; | |
37 | u32 pri; | |
38 | u32 dur; | |
39 | u32 count; | |
40 | u32 count_falses; | |
41 | u64 first_ts; | |
42 | u64 last_ts; | |
43 | u64 deadline_ts; | |
44 | }; | |
45 | ||
6ee159e2 ZK |
46 | /** |
47 | * struct pri_detector - PRI detector element for a dedicated radar type | |
48 | * @exit(): destructor | |
ca21cfde | 49 | * @add_pulse(): add pulse event, returns pri_sequence if pattern was detected |
6ee159e2 ZK |
50 | * @reset(): clear states and reset to given time stamp |
51 | * @rs: detector specs for this detector element | |
52 | * @last_ts: last pulse time stamp considered for this element in usecs | |
53 | * @sequences: list_head holding potential pulse sequences | |
54 | * @pulses: list connecting pulse_elem objects | |
55 | * @count: number of pulses in queue | |
56 | * @max_count: maximum number of pulses to be queued | |
57 | * @window_size: window size back from newest pulse time stamp in usecs | |
58 | */ | |
59 | struct pri_detector { | |
60 | void (*exit) (struct pri_detector *de); | |
ca21cfde ZK |
61 | struct pri_sequence * |
62 | (*add_pulse)(struct pri_detector *de, struct pulse_event *e); | |
6ee159e2 ZK |
63 | void (*reset) (struct pri_detector *de, u64 ts); |
64 | ||
65 | /* private: internal use only */ | |
66 | const struct radar_detector_specs *rs; | |
67 | u64 last_ts; | |
68 | struct list_head sequences; | |
69 | struct list_head pulses; | |
70 | u32 count; | |
71 | u32 max_count; | |
72 | u32 window_size; | |
73 | }; | |
74 | ||
75 | struct pri_detector *pri_detector_init(const struct radar_detector_specs *rs); | |
76 | ||
77 | #endif /* DFS_PRI_DETECTOR_H */ |