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
  28 /* FFT sample format given to userspace via debugfs.
  29  *
  30  * Please keep the type/length at the front position and change
  31  * other fields after adding another sample type
  32  *
  33  * TODO: this might need rework when switching to nl80211-based
  34  * interface.
  35  */
  36 enum ath_fft_sample_type {
  37         ATH_FFT_SAMPLE_HT20 = 1,
  38         ATH_FFT_SAMPLE_HT20_40,
  39         ATH_FFT_SAMPLE_ATH10K,
  40 };
  41
  42 struct fft_sample_tlv {
  43         u8 type;        /* see ath_fft_sample */
  44         __be16 length;
  45         /* type dependent data follows */
  46 } __packed;
  47
  48 struct fft_sample_ht20 {
  49         struct fft_sample_tlv tlv;
  50
  51         u8 max_exp;
  52
  53         __be16 freq;
  54         s8 rssi;
  55         s8 noise;
  56
  57         __be16 max_magnitude;
  58         u8 max_index;
  59         u8 bitmap_weight;
  60
  61         __be64 tsf;
  62
  63         u8 data[SPECTRAL_HT20_NUM_BINS];
  64 } __packed;
  65
  66 struct fft_sample_ht20_40 {
  67         struct fft_sample_tlv tlv;
  68
  69         u8 channel_type;
  70         __be16 freq;
  71
  72         s8 lower_rssi;
  73         s8 upper_rssi;
  74
  75         __be64 tsf;
  76
  77         s8 lower_noise;
  78         s8 upper_noise;
  79
  80         __be16 lower_max_magnitude;
  81         __be16 upper_max_magnitude;
  82
  83         u8 lower_max_index;
  84         u8 upper_max_index;
  85
  86         u8 lower_bitmap_weight;
  87         u8 upper_bitmap_weight;
  88
  89         u8 max_exp;
  90
  91         u8 data[SPECTRAL_HT20_40_NUM_BINS];
  92 } __packed;
  93
  94 struct fft_sample_ath10k {
  95         struct fft_sample_tlv tlv;
  96         u8 chan_width_mhz;
  97         __be16 freq1;
  98         __be16 freq2;
  99         __be16 noise;
 100         __be16 max_magnitude;
 101         __be16 total_gain_db;
 102         __be16 base_pwr_db;
 103         __be64 tsf;
 104         s8 max_index;
 105         u8 rssi;
 106         u8 relpwr_db;
 107         u8 avgpwr_db;
 108         u8 max_exp;
 109
 110         u8 data[0];
 111 } __packed;
 112
 113 #endif /* SPECTRAL_COMMON_H */