diff options
Diffstat (limited to 'drivers/net/wireless/ath/dfs_pattern_detector.h')
| -rw-r--r-- | drivers/net/wireless/ath/dfs_pattern_detector.h | 122 |
1 files changed, 122 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/dfs_pattern_detector.h b/drivers/net/wireless/ath/dfs_pattern_detector.h new file mode 100644 index 000000000..18db6f4f3 --- /dev/null +++ b/drivers/net/wireless/ath/dfs_pattern_detector.h @@ -0,0 +1,122 @@ +/* + * 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 */ |