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122 lines
3.9 KiB
122 lines
3.9 KiB
/* |
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* Copyright (c) 2012 Neratec Solutions AG |
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* |
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* Permission to use, copy, modify, and/or distribute this software for any |
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* purpose with or without fee is hereby granted, provided that the above |
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* copyright notice and this permission notice appear in all copies. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
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*/ |
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#ifndef DFS_PATTERN_DETECTOR_H |
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#define DFS_PATTERN_DETECTOR_H |
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#include <linux/types.h> |
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#include <linux/list.h> |
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#include <linux/nl80211.h> |
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/* tolerated deviation of radar time stamp in usecs on both sides |
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* TODO: this might need to be HW-dependent |
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*/ |
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#define PRI_TOLERANCE 16 |
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/** |
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* struct ath_dfs_pool_stats - DFS Statistics for global pools |
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*/ |
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struct ath_dfs_pool_stats { |
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u32 pool_reference; |
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u32 pulse_allocated; |
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u32 pulse_alloc_error; |
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u32 pulse_used; |
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u32 pseq_allocated; |
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u32 pseq_alloc_error; |
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u32 pseq_used; |
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}; |
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/** |
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* struct pulse_event - describing pulses reported by PHY |
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* @ts: pulse time stamp in us |
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* @freq: channel frequency in MHz |
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* @width: pulse duration in us |
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* @rssi: rssi of radar event |
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* @chirp: chirp detected in pulse |
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*/ |
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struct pulse_event { |
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u64 ts; |
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u16 freq; |
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u8 width; |
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u8 rssi; |
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bool chirp; |
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}; |
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/** |
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* struct radar_detector_specs - detector specs for a radar pattern type |
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* @type_id: pattern type, as defined by regulatory |
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* @width_min: minimum radar pulse width in [us] |
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* @width_max: maximum radar pulse width in [us] |
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* @pri_min: minimum pulse repetition interval in [us] (including tolerance) |
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* @pri_max: minimum pri in [us] (including tolerance) |
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* @num_pri: maximum number of different pri for this type |
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* @ppb: pulses per bursts for this type |
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* @ppb_thresh: number of pulses required to trigger detection |
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* @max_pri_tolerance: pulse time stamp tolerance on both sides [us] |
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* @chirp: chirp required for the radar pattern |
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*/ |
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struct radar_detector_specs { |
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u8 type_id; |
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u8 width_min; |
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u8 width_max; |
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u16 pri_min; |
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u16 pri_max; |
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u8 num_pri; |
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u8 ppb; |
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u8 ppb_thresh; |
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u8 max_pri_tolerance; |
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bool chirp; |
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}; |
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/** |
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* struct dfs_pattern_detector - DFS pattern detector |
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* @exit(): destructor |
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* @set_dfs_domain(): set DFS domain, resets detector lines upon domain changes |
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* @add_pulse(): add radar pulse to detector, returns true on detection |
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* @region: active DFS region, NL80211_DFS_UNSET until set |
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* @num_radar_types: number of different radar types |
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* @last_pulse_ts: time stamp of last valid pulse in usecs |
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* @radar_detector_specs: array of radar detection specs |
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* @channel_detectors: list connecting channel_detector elements |
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*/ |
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struct dfs_pattern_detector { |
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void (*exit)(struct dfs_pattern_detector *dpd); |
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bool (*set_dfs_domain)(struct dfs_pattern_detector *dpd, |
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enum nl80211_dfs_regions region); |
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bool (*add_pulse)(struct dfs_pattern_detector *dpd, |
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struct pulse_event *pe, |
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struct radar_detector_specs *rs); |
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struct ath_dfs_pool_stats (*get_stats)(struct dfs_pattern_detector *dpd); |
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enum nl80211_dfs_regions region; |
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u8 num_radar_types; |
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u64 last_pulse_ts; |
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/* needed for ath_dbg() */ |
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struct ath_common *common; |
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const struct radar_detector_specs *radar_spec; |
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struct list_head channel_detectors; |
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}; |
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/** |
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* dfs_pattern_detector_init() - constructor for pattern detector class |
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* @param region: DFS domain to be used, can be NL80211_DFS_UNSET at creation |
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* @return instance pointer on success, NULL otherwise |
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*/ |
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extern struct dfs_pattern_detector * |
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dfs_pattern_detector_init(struct ath_common *common, |
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enum nl80211_dfs_regions region); |
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#endif /* DFS_PATTERN_DETECTOR_H */
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