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 */
114