drivers/net/wireless/ath/spectral_common.h

   1 /*
   2  * Copyright (c) 2013 Qualcomm Atheros, Inc.
   3  *
   4  * Permission to use, copy, modify, and/or distribute this software for any
   5  * purpose with or without fee is hereby granted, provided that the above
   6  * copyright notice and this permission notice appear in all copies.
   7  *
   8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  11  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  13  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  14  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  15  */
  16
  17 #ifndef SPECTRAL_COMMON_H
  18 #define SPECTRAL_COMMON_H
  19
  20 #define SPECTRAL_HT20_NUM_BINS          56
  21 #define SPECTRAL_HT20_40_NUM_BINS               128
  22
  23 /* TODO: could possibly be 512, but no samples this large
  24  * could be acquired so far.
  25  */
  26 #define SPECTRAL_ATH10K_MAX_NUM_BINS            256
  27 #define SPECTRAL_ATH11K_MAX_NUM_BINS            512
  28
  29 /* FFT sample format given to userspace via debugfs.
  30  *
  31  * Please keep the type/length at the front position and change
  32  * other fields after adding another sample type
  33  *
  34  * TODO: this might need rework when switching to nl80211-based
  35  * interface.
  36  */
  37 enum ath_fft_sample_type {
  38         ATH_FFT_SAMPLE_HT20 = 1,
  39         ATH_FFT_SAMPLE_HT20_40,
  40         ATH_FFT_SAMPLE_ATH10K,
  41         ATH_FFT_SAMPLE_ATH11K
  42 };
  43
  44 struct fft_sample_tlv {
  45         u8 type;        /* see ath_fft_sample */
  46         __be16 length;
  47         /* type dependent data follows */
  48 } __packed;
  49
  50 struct fft_sample_ht20 {
  51         struct fft_sample_tlv tlv;
  52
  53         u8 max_exp;
  54
  55         __be16 freq;
  56         s8 rssi;
  57         s8 noise;
  58
  59         __be16 max_magnitude;
  60         u8 max_index;
  61         u8 bitmap_weight;
  62
  63         __be64 tsf;
  64
  65         u8 data[SPECTRAL_HT20_NUM_BINS];
  66 } __packed;
  67
  68 struct fft_sample_ht20_40 {
  69         struct fft_sample_tlv tlv;
  70
  71         u8 channel_type;
  72         __be16 freq;
  73
  74         s8 lower_rssi;
  75         s8 upper_rssi;
  76
  77         __be64 tsf;
  78
  79         s8 lower_noise;
  80         s8 upper_noise;
  81
  82         __be16 lower_max_magnitude;
  83         __be16 upper_max_magnitude;
  84
  85         u8 lower_max_index;
  86         u8 upper_max_index;
  87
  88         u8 lower_bitmap_weight;
  89         u8 upper_bitmap_weight;
  90
  91         u8 max_exp;
  92
  93         u8 data[SPECTRAL_HT20_40_NUM_BINS];
  94 } __packed;
  95
  96 struct fft_sample_ath10k {
  97         struct fft_sample_tlv tlv;
  98         u8 chan_width_mhz;
  99         __be16 freq1;
 100         __be16 freq2;
 101         __be16 noise;
 102         __be16 max_magnitude;
 103         __be16 total_gain_db;
 104         __be16 base_pwr_db;
 105         __be64 tsf;
 106         s8 max_index;
 107         u8 rssi;
 108         u8 relpwr_db;
 109         u8 avgpwr_db;
 110         u8 max_exp;
 111
 112         u8 data[0];
 113 } __packed;
 114
 115 struct fft_sample_ath11k {
 116         struct fft_sample_tlv tlv;
 117         u8 chan_width_mhz;
 118         s8 max_index;
 119         u8 max_exp;
 120         __be16 freq1;
 121         __be16 freq2;
 122         __be16 max_magnitude;
 123         __be16 rssi;
 124         __be32 tsf;
 125         __be32 noise;
 126
 127         u8 data[0];
 128 } __packed;
 129
 130 #endif /* SPECTRAL_COMMON_H */