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 	ATH_FFT_SAMPLE_ATH11K
41 };
42 
43 struct fft_sample_tlv {
44 	u8 type;	/* see ath_fft_sample */
45 	__be16 length;
46 	/* type dependent data follows */
47 } __packed;
48 
49 struct fft_sample_ht20 {
50 	struct fft_sample_tlv tlv;
51 
52 	u8 max_exp;
53 
54 	__be16 freq;
55 	s8 rssi;
56 	s8 noise;
57 
58 	__be16 max_magnitude;
59 	u8 max_index;
60 	u8 bitmap_weight;
61 
62 	__be64 tsf;
63 
64 	u8 data[SPECTRAL_HT20_NUM_BINS];
65 } __packed;
66 
67 struct fft_sample_ht20_40 {
68 	struct fft_sample_tlv tlv;
69 
70 	u8 channel_type;
71 	__be16 freq;
72 
73 	s8 lower_rssi;
74 	s8 upper_rssi;
75 
76 	__be64 tsf;
77 
78 	s8 lower_noise;
79 	s8 upper_noise;
80 
81 	__be16 lower_max_magnitude;
82 	__be16 upper_max_magnitude;
83 
84 	u8 lower_max_index;
85 	u8 upper_max_index;
86 
87 	u8 lower_bitmap_weight;
88 	u8 upper_bitmap_weight;
89 
90 	u8 max_exp;
91 
92 	u8 data[SPECTRAL_HT20_40_NUM_BINS];
93 } __packed;
94 
95 struct fft_sample_ath10k {
96 	struct fft_sample_tlv tlv;
97 	u8 chan_width_mhz;
98 	__be16 freq1;
99 	__be16 freq2;
100 	__be16 noise;
101 	__be16 max_magnitude;
102 	__be16 total_gain_db;
103 	__be16 base_pwr_db;
104 	__be64 tsf;
105 	s8 max_index;
106 	u8 rssi;
107 	u8 relpwr_db;
108 	u8 avgpwr_db;
109 	u8 max_exp;
110 
111 	u8 data[];
112 } __packed;
113 
114 struct fft_sample_ath11k {
115 	struct fft_sample_tlv tlv;
116 	u8 chan_width_mhz;
117 	s8 max_index;
118 	u8 max_exp;
119 	__be16 freq1;
120 	__be16 freq2;
121 	__be16 max_magnitude;
122 	__be16 rssi;
123 	__be32 tsf;
124 	__be32 noise;
125 
126 	u8 data[];
127 } __packed;
128 
129 #endif /* SPECTRAL_COMMON_H */
130