LXR linux/drivers/net/wireless/ath/spectral

   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 */
  37enum 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
  44struct fft_sample_tlv {
  45        u8 type;        /* see ath_fft_sample */
  46        __be16 length;
  47        /* type dependent data follows */
  48} __packed;
  49
  50struct 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
  68struct 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
  96struct 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
 115struct 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 */
 131