1 files changed, 112 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 000000000000..dde2652b787c
--- /dev/null
+++ b/drivers/net/wireless/ath/dfs_pattern_detector.h
@@ -0,0 +1,112 @@
+/*
+ * 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>
+
+/**
+ * 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
+ */
+struct pulse_event {
+        u64 ts;
+        u16 freq;
+        u8 width;
+        u8 rssi;
+};
+
+/**
+ * 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]
+ */
+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;
+};
+
+/**
+ * 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 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 */