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855aed1220
Adds the spectral scan feature for ath10k. The spectral scan is triggered by configuring a mode through a debugfs control file. Samples can be gathered via another relay debugfs file. Essentially, to try it out: ip link set dev wlan0 up echo background > /sys/kernel/debug/ieee80211/phy0/ath10k/spectral_scan_ctl echo trigger > /sys/kernel/debug/ieee80211/phy0/ath10k/spectral_scan_ctl iw dev wlan0 scan echo disable > /sys/kernel/debug/ieee80211/phy0/ath10k/spectral_scan_ctl cat /sys/kernel/debug/ieee80211/phy0/ath10k/spectral_scan0 > samples This feature is still experimental. Based on the original RFC patch of Sven Eckelmann. Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de> Signed-off-by: Mathias Kretschmer <mathias.kretschmer@fokus.fraunhofer.de> Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
113 lines
2.4 KiB
C
113 lines
2.4 KiB
C
/*
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* Copyright (c) 2013 Qualcomm Atheros, Inc.
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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 SPECTRAL_COMMON_H
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#define SPECTRAL_COMMON_H
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#define SPECTRAL_HT20_NUM_BINS 56
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#define SPECTRAL_HT20_40_NUM_BINS 128
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/* TODO: could possibly be 512, but no samples this large
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* could be acquired so far.
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*/
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#define SPECTRAL_ATH10K_MAX_NUM_BINS 256
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/* FFT sample format given to userspace via debugfs.
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*
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* Please keep the type/length at the front position and change
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* other fields after adding another sample type
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*
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* TODO: this might need rework when switching to nl80211-based
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* interface.
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*/
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enum ath_fft_sample_type {
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ATH_FFT_SAMPLE_HT20 = 1,
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ATH_FFT_SAMPLE_HT20_40,
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ATH_FFT_SAMPLE_ATH10K,
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};
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struct fft_sample_tlv {
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u8 type; /* see ath_fft_sample */
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__be16 length;
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/* type dependent data follows */
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} __packed;
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struct fft_sample_ht20 {
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struct fft_sample_tlv tlv;
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u8 max_exp;
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__be16 freq;
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s8 rssi;
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s8 noise;
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__be16 max_magnitude;
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u8 max_index;
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u8 bitmap_weight;
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__be64 tsf;
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u8 data[SPECTRAL_HT20_NUM_BINS];
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} __packed;
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struct fft_sample_ht20_40 {
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struct fft_sample_tlv tlv;
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u8 channel_type;
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__be16 freq;
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s8 lower_rssi;
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s8 upper_rssi;
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__be64 tsf;
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s8 lower_noise;
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s8 upper_noise;
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__be16 lower_max_magnitude;
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__be16 upper_max_magnitude;
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u8 lower_max_index;
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u8 upper_max_index;
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u8 lower_bitmap_weight;
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u8 upper_bitmap_weight;
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u8 max_exp;
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u8 data[SPECTRAL_HT20_40_NUM_BINS];
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} __packed;
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struct fft_sample_ath10k {
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struct fft_sample_tlv tlv;
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u8 chan_width_mhz;
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__be16 freq1;
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__be16 freq2;
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__be16 noise;
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__be16 max_magnitude;
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__be16 total_gain_db;
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__be16 base_pwr_db;
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__be64 tsf;
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s8 max_index;
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u8 rssi;
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u8 relpwr_db;
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u8 avgpwr_db;
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u8 max_exp;
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u8 data[0];
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} __packed;
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#endif /* SPECTRAL_COMMON_H */
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