/**
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******************************************************************************
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*
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* @file rwnx_radar.h
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*
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* @brief Functions to handle radar detection
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*
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*
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* Copyright (C) RivieraWaves 2012-2019
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*
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******************************************************************************
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*/
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#ifndef _RWNX_RADAR_H_
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#define _RWNX_RADAR_H_
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#include <linux/nl80211.h>
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struct rwnx_vif;
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struct rwnx_hw;
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enum rwnx_radar_chain {
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RWNX_RADAR_RIU = 0,
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RWNX_RADAR_FCU,
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RWNX_RADAR_LAST
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};
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enum rwnx_radar_detector {
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RWNX_RADAR_DETECT_DISABLE = 0, /* Ignore radar pulses */
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RWNX_RADAR_DETECT_ENABLE = 1, /* Process pattern detection but do not
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report radar to upper layer (for test) */
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RWNX_RADAR_DETECT_REPORT = 2 /* Process pattern detection and report
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radar to upper layer. */
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};
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#ifdef CONFIG_RWNX_RADAR
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#include <linux/workqueue.h>
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#include <linux/spinlock.h>
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#define RWNX_RADAR_PULSE_MAX 32
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/**
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* struct rwnx_radar_pulses - List of pulses reported by HW
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* @index: write index
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* @count: number of valid pulses
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* @buffer: buffer of pulses
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*/
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struct rwnx_radar_pulses {
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/* Last radar pulses received */
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int index;
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int count;
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u32 buffer[RWNX_RADAR_PULSE_MAX];
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};
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/**
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* struct dfs_pattern_detector - DFS pattern detector
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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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* @prev_jiffies:
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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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u8 enabled;
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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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u32 prev_jiffies;
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const struct radar_detector_specs *radar_spec;
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struct list_head detectors[];
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};
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#define NX_NB_RADAR_DETECTED 4
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/**
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* struct rwnx_radar_detected - List of radar detected
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*/
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struct rwnx_radar_detected {
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u16 index;
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u16 count;
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s64 time[NX_NB_RADAR_DETECTED];
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s16 freq[NX_NB_RADAR_DETECTED];
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};
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struct rwnx_radar {
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struct rwnx_radar_pulses pulses[RWNX_RADAR_LAST];
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struct dfs_pattern_detector *dpd[RWNX_RADAR_LAST];
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struct rwnx_radar_detected detected[RWNX_RADAR_LAST];
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struct work_struct detection_work; /* Work used to process radar pulses */
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spinlock_t lock; /* lock for pulses processing */
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/* In softmac cac is handled by mac80211 */
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#ifdef CONFIG_RWNX_FULLMAC
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struct delayed_work cac_work; /* Work used to handle CAC */
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struct rwnx_vif *cac_vif; /* vif on which we started CAC */
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#endif
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};
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bool rwnx_radar_detection_init(struct rwnx_radar *radar);
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void rwnx_radar_detection_deinit(struct rwnx_radar *radar);
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bool rwnx_radar_set_domain(struct rwnx_radar *radar,
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enum nl80211_dfs_regions region);
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void rwnx_radar_detection_enable(struct rwnx_radar *radar, u8 enable, u8 chain);
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bool rwnx_radar_detection_is_enable(struct rwnx_radar *radar, u8 chain);
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void rwnx_radar_start_cac(struct rwnx_radar *radar, u32 cac_time_ms,
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struct rwnx_vif *vif);
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void rwnx_radar_cancel_cac(struct rwnx_radar *radar);
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void rwnx_radar_detection_enable_on_cur_channel(struct rwnx_hw *rwnx_hw);
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int rwnx_radar_dump_pattern_detector(char *buf, size_t len,
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struct rwnx_radar *radar, u8 chain);
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int rwnx_radar_dump_radar_detected(char *buf, size_t len,
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struct rwnx_radar *radar, u8 chain);
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#else
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struct rwnx_radar {
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};
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static inline bool rwnx_radar_detection_init(struct rwnx_radar *radar)
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{return true; }
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static inline void rwnx_radar_detection_deinit(struct rwnx_radar *radar)
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{}
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static inline bool rwnx_radar_set_domain(struct rwnx_radar *radar,
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enum nl80211_dfs_regions region)
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{return true; }
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static inline void rwnx_radar_detection_enable(struct rwnx_radar *radar,
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u8 enable, u8 chain)
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{}
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static inline bool rwnx_radar_detection_is_enable(struct rwnx_radar *radar,
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u8 chain)
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{return false; }
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static inline void rwnx_radar_start_cac(struct rwnx_radar *radar,
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u32 cac_time_ms, struct rwnx_vif *vif)
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{}
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static inline void rwnx_radar_cancel_cac(struct rwnx_radar *radar)
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{}
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static inline void rwnx_radar_detection_enable_on_cur_channel(struct rwnx_hw *rwnx_hw)
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{}
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static inline int rwnx_radar_dump_pattern_detector(char *buf, size_t len,
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struct rwnx_radar *radar,
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u8 chain)
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{return 0; }
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static inline int rwnx_radar_dump_radar_detected(char *buf, size_t len,
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struct rwnx_radar *radar,
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u8 chain)
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{return 0; }
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#endif /* CONFIG_RWNX_RADAR */
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#endif // _RWNX_RADAR_H_
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