/* SPDX-License-Identifier: GPL-2.0 */
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/******************************************************************************
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*
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* Copyright (C) 2020 SeekWave Technology Co.,Ltd.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation;
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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******************************************************************************/
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#ifndef __SKW_DFS_H__
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#define __SKW_DFS_H__
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#include <linux/ieee80211.h>
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#include <net/cfg80211.h>
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#include <linux/inetdevice.h>
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#define SKW_PRI_TOLERANCE 16
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#define SKW_DFS_FLAG_CAC_MODE 1
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#define SKW_DFS_FLAG_MONITOR_MODE 2
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struct skw_pri_detector {
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u64 last_ts;
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u32 window_size;
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u32 count, max_count;
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struct list_head sequences;
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struct list_head pulses;
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};
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struct skw_radar_rule {
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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 nr_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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struct skw_radar_cfg {
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const struct skw_radar_rule rule;
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struct skw_pri_detector pri;
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};
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struct skw_radar_info {
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int nr_cfg;
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struct skw_radar_cfg *cfgs;
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};
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enum SKW_DFS_ACTION {
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SKW_DFS_START_CAC = 1,
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SKW_DFS_STOP_CAC,
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SKW_DFS_START_MONITOR,
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SKW_DFS_STOP_MONITOR,
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};
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struct skw_cac_params {
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u8 chn;
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u8 center_chn1;
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u8 center_chn2;
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u8 band_width;
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u32 time_ms;
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u8 region;
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} __packed;
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struct skw_dfs_cac {
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u16 type;
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u16 len;
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struct skw_cac_params params;
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};
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struct skw_pulse_data {
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u64 chirp: 1;
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u64 rssi: 5;
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u64 width: 8;
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u64 ts: 24;
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u64 resv:26;
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};
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struct skw_radar_pulse {
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u8 nr_pulse;
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u8 resv;
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struct skw_pulse_data data[0];
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} __packed;
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struct skw_pulse_info {
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u64 ts;
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u16 freq;
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u8 width;
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s8 rssi;
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bool chirp;
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};
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struct skw_pulse_elem {
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struct list_head head;
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u64 ts;
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};
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struct skw_pri_sequence {
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struct list_head head;
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u32 pri;
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u32 dur;
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u32 count;
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u32 count_falses;
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u64 first_ts;
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u64 last_ts;
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u64 deadline_ts;
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};
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#ifdef CONFIG_SWT6621S_DFS_MASTER
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int skw_dfs_chan_init(struct wiphy *wiphy, struct net_device *dev,
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struct cfg80211_chan_def *chandef, u32 cac_time_ms);
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int skw_dfs_add_pulse(struct wiphy *wiphy, struct net_device *dev,
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struct skw_pulse_info *pulse);
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int skw_dfs_start_cac(struct wiphy *wiphy, struct net_device *dev);
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int skw_dfs_stop_cac(struct wiphy *wiphy, struct net_device *ndev);
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int skw_dfs_start_monitor(struct wiphy *wiphy, struct net_device *dev);
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int skw_dfs_stop_monitor(struct wiphy *wiphy, struct net_device *dev);
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int skw_dfs_init(struct wiphy *wiphy, struct net_device *dev);
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int skw_dfs_deinit(struct wiphy *wiphy, struct net_device *dev);
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#else
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static inline int skw_dfs_chan_init(struct wiphy *wiphy, struct net_device *dev,
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struct cfg80211_chan_def *chandef, u32 cac_time_ms)
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{
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return -ENOTSUPP;
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}
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static inline int skw_dfs_add_pulse(struct wiphy *wiphy, struct net_device *dev,
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struct skw_pulse_info *pulse)
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{
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return 0;
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}
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static inline int skw_dfs_start_cac(struct wiphy *wiphy, struct net_device *dev)
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{
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return -ENOTSUPP;
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}
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static inline int skw_dfs_stop_cac(struct wiphy *wiphy, struct net_device *ndev)
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{
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return 0;
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}
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static inline int skw_dfs_start_monitor(struct wiphy *wiphy, struct net_device *dev)
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{
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return -ENOTSUPP;
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}
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static inline int skw_dfs_stop_monitor(struct wiphy *wiphy, struct net_device *dev)
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{
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return 0;
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}
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static inline int skw_dfs_init(struct wiphy *wiphy, struct net_device *dev)
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{
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return 0;
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}
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static inline int skw_dfs_deinit(struct wiphy *wiphy, struct net_device *dev)
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{
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return 0;
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}
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#endif
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#endif
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