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1/*2 * Copyright (c) 2012 Neratec Solutions AG3 *4 * Permission to use, copy, modify, and/or distribute this software for any5 * purpose with or without fee is hereby granted, provided that the above6 * copyright notice and this permission notice appear in all copies.7 *8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.15 */16 17#ifndef DFS_PRI_DETECTOR_H18#define DFS_PRI_DETECTOR_H19 20#include <linux/list.h>21 22extern struct ath_dfs_pool_stats global_dfs_pool_stats;23 24/**25 * struct pri_sequence - sequence of pulses matching one PRI26 * @head: list_head27 * @pri: pulse repetition interval (PRI) in usecs28 * @dur: duration of sequence in usecs29 * @count: number of pulses in this sequence30 * @count_falses: number of not matching pulses in this sequence31 * @first_ts: time stamp of first pulse in usecs32 * @last_ts: time stamp of last pulse in usecs33 * @deadline_ts: deadline when this sequence becomes invalid (first_ts + dur)34 */35struct 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/**47 * struct pri_detector - PRI detector element for a dedicated radar type48 * @exit(): destructor49 * @add_pulse(): add pulse event, returns pri_sequence if pattern was detected50 * @reset(): clear states and reset to given time stamp51 * @rs: detector specs for this detector element52 * @last_ts: last pulse time stamp considered for this element in usecs53 * @sequences: list_head holding potential pulse sequences54 * @pulses: list connecting pulse_elem objects55 * @count: number of pulses in queue56 * @max_count: maximum number of pulses to be queued57 * @window_size: window size back from newest pulse time stamp in usecs58 */59struct pri_detector {60 void (*exit) (struct pri_detector *de);61 struct pri_sequence *62 (*add_pulse)(struct pri_detector *de, struct pulse_event *e);63 void (*reset) (struct pri_detector *de, u64 ts);64 65 const struct radar_detector_specs *rs;66 67/* private: internal use only */68 u64 last_ts;69 struct list_head sequences;70 struct list_head pulses;71 u32 count;72 u32 max_count;73 u32 window_size;74};75 76struct pri_detector *pri_detector_init(const struct radar_detector_specs *rs);77 78#endif /* DFS_PRI_DETECTOR_H */79