Zefir Kurtisi | 6ee159e | 2012-04-03 17:15:49 +0200 | [diff] [blame] | 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 | |
Janusz Dziedzic | d265214 | 2013-10-14 11:06:04 +0200 | [diff] [blame] | 22 | extern struct ath_dfs_pool_stats global_dfs_pool_stats; |
| 23 | |
Zefir Kurtisi | 6ee159e | 2012-04-03 17:15:49 +0200 | [diff] [blame] | 24 | /** |
Zefir Kurtisi | ca21cfd | 2013-04-15 11:29:06 +0200 | [diff] [blame] | 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 | |
| 46 | /** |
Zefir Kurtisi | 6ee159e | 2012-04-03 17:15:49 +0200 | [diff] [blame] | 47 | * struct pri_detector - PRI detector element for a dedicated radar type |
| 48 | * @exit(): destructor |
Zefir Kurtisi | ca21cfd | 2013-04-15 11:29:06 +0200 | [diff] [blame] | 49 | * @add_pulse(): add pulse event, returns pri_sequence if pattern was detected |
Zefir Kurtisi | 6ee159e | 2012-04-03 17:15:49 +0200 | [diff] [blame] | 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); |
Zefir Kurtisi | ca21cfd | 2013-04-15 11:29:06 +0200 | [diff] [blame] | 61 | struct pri_sequence * |
| 62 | (*add_pulse)(struct pri_detector *de, struct pulse_event *e); |
Zefir Kurtisi | 6ee159e | 2012-04-03 17:15:49 +0200 | [diff] [blame] | 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 */ |