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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 | /* * Copyright (c) 2012 Neratec Solutions AG * * Permission to use, copy, modify, and/or distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #ifndef DFS_PATTERN_DETECTOR_H #define DFS_PATTERN_DETECTOR_H #include <linux/types.h> #include <linux/list.h> #include <linux/nl80211.h> /* tolerated deviation of radar time stamp in usecs on both sides * TODO: this might need to be HW-dependent */ #define PRI_TOLERANCE 16 /** * struct ath_dfs_pool_stats - DFS Statistics for global pools */ struct ath_dfs_pool_stats { u32 pool_reference; u32 pulse_allocated; u32 pulse_alloc_error; u32 pulse_used; u32 pseq_allocated; u32 pseq_alloc_error; u32 pseq_used; }; /** * struct pulse_event - describing pulses reported by PHY * @ts: pulse time stamp in us * @freq: channel frequency in MHz * @width: pulse duration in us * @rssi: rssi of radar event * @chirp: chirp detected in pulse */ struct pulse_event { u64 ts; u16 freq; u8 width; u8 rssi; bool chirp; }; /** * struct radar_detector_specs - detector specs for a radar pattern type * @type_id: pattern type, as defined by regulatory * @width_min: minimum radar pulse width in [us] * @width_max: maximum radar pulse width in [us] * @pri_min: minimum pulse repetition interval in [us] (including tolerance) * @pri_max: minimum pri in [us] (including tolerance) * @num_pri: maximum number of different pri for this type * @ppb: pulses per bursts for this type * @ppb_thresh: number of pulses required to trigger detection * @max_pri_tolerance: pulse time stamp tolerance on both sides [us] * @chirp: chirp required for the radar pattern */ struct radar_detector_specs { u8 type_id; u8 width_min; u8 width_max; u16 pri_min; u16 pri_max; u8 num_pri; u8 ppb; u8 ppb_thresh; u8 max_pri_tolerance; bool chirp; }; /** * struct dfs_pattern_detector - DFS pattern detector * @exit(): destructor * @set_dfs_domain(): set DFS domain, resets detector lines upon domain changes * @add_pulse(): add radar pulse to detector, returns true on detection * @region: active DFS region, NL80211_DFS_UNSET until set * @num_radar_types: number of different radar types * @last_pulse_ts: time stamp of last valid pulse in usecs * @radar_detector_specs: array of radar detection specs * @channel_detectors: list connecting channel_detector elements */ struct dfs_pattern_detector { void (*exit)(struct dfs_pattern_detector *dpd); bool (*set_dfs_domain)(struct dfs_pattern_detector *dpd, enum nl80211_dfs_regions region); bool (*add_pulse)(struct dfs_pattern_detector *dpd, struct pulse_event *pe, struct radar_detector_specs *rs); struct ath_dfs_pool_stats (*get_stats)(struct dfs_pattern_detector *dpd); enum nl80211_dfs_regions region; u8 num_radar_types; u64 last_pulse_ts; /* needed for ath_dbg() */ struct ath_common *common; const struct radar_detector_specs *radar_spec; struct list_head channel_detectors; }; /** * dfs_pattern_detector_init() - constructor for pattern detector class * @param region: DFS domain to be used, can be NL80211_DFS_UNSET at creation * @return instance pointer on success, NULL otherwise */ extern struct dfs_pattern_detector * dfs_pattern_detector_init(struct ath_common *common, enum nl80211_dfs_regions region); #endif /* DFS_PATTERN_DETECTOR_H */ |