1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
|
// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
/*
* Copyright (C) 2021 Intel Corporation
*/
#include <net/mac80211.h>
#include "fw/api/rs.h"
#include "iwl-drv.h"
#include "iwl-config.h"
#define IWL_DECLARE_RATE_INFO(r) \
[IWL_RATE_##r##M_INDEX] = IWL_RATE_##r##M_PLCP
/*
* Translate from fw_rate_index (IWL_RATE_XXM_INDEX) to PLCP
* */
static const u8 fw_rate_idx_to_plcp[IWL_RATE_COUNT] = {
IWL_DECLARE_RATE_INFO(1),
IWL_DECLARE_RATE_INFO(2),
IWL_DECLARE_RATE_INFO(5),
IWL_DECLARE_RATE_INFO(11),
IWL_DECLARE_RATE_INFO(6),
IWL_DECLARE_RATE_INFO(9),
IWL_DECLARE_RATE_INFO(12),
IWL_DECLARE_RATE_INFO(18),
IWL_DECLARE_RATE_INFO(24),
IWL_DECLARE_RATE_INFO(36),
IWL_DECLARE_RATE_INFO(48),
IWL_DECLARE_RATE_INFO(54),
};
/* mbps, mcs */
static const struct iwl_rate_mcs_info rate_mcs[IWL_RATE_COUNT] = {
{ "1", "BPSK DSSS"},
{ "2", "QPSK DSSS"},
{"5.5", "BPSK CCK"},
{ "11", "QPSK CCK"},
{ "6", "BPSK 1/2"},
{ "9", "BPSK 1/2"},
{ "12", "QPSK 1/2"},
{ "18", "QPSK 3/4"},
{ "24", "16QAM 1/2"},
{ "36", "16QAM 3/4"},
{ "48", "64QAM 2/3"},
{ "54", "64QAM 3/4"},
{ "60", "64QAM 5/6"},
};
static const char * const ant_name[] = {
[ANT_NONE] = "None",
[ANT_A] = "A",
[ANT_B] = "B",
[ANT_AB] = "AB",
};
static const char * const pretty_bw[] = {
"20Mhz",
"40Mhz",
"80Mhz",
"160 Mhz",
"320Mhz",
};
u8 iwl_fw_rate_idx_to_plcp(int idx)
{
return fw_rate_idx_to_plcp[idx];
}
IWL_EXPORT_SYMBOL(iwl_fw_rate_idx_to_plcp);
const struct iwl_rate_mcs_info *iwl_rate_mcs(int idx)
{
return &rate_mcs[idx];
}
IWL_EXPORT_SYMBOL(iwl_rate_mcs);
const char *iwl_rs_pretty_ant(u8 ant)
{
if (ant >= ARRAY_SIZE(ant_name))
return "UNKNOWN";
return ant_name[ant];
}
IWL_EXPORT_SYMBOL(iwl_rs_pretty_ant);
const char *iwl_rs_pretty_bw(int bw)
{
if (bw >= ARRAY_SIZE(pretty_bw))
return "unknown bw";
return pretty_bw[bw];
}
IWL_EXPORT_SYMBOL(iwl_rs_pretty_bw);
static u32 iwl_legacy_rate_to_fw_idx(u32 rate_n_flags)
{
int rate = rate_n_flags & RATE_LEGACY_RATE_MSK_V1;
int idx;
bool ofdm = !(rate_n_flags & RATE_MCS_CCK_MSK_V1);
int offset = ofdm ? IWL_FIRST_OFDM_RATE : 0;
int last = ofdm ? IWL_RATE_COUNT_LEGACY : IWL_FIRST_OFDM_RATE;
for (idx = offset; idx < last; idx++)
if (iwl_fw_rate_idx_to_plcp(idx) == rate)
return idx - offset;
return IWL_RATE_INVALID;
}
u32 iwl_new_rate_from_v1(u32 rate_v1)
{
u32 rate_v2 = 0;
u32 dup = 0;
if (rate_v1 == 0)
return rate_v1;
/* convert rate */
if (rate_v1 & RATE_MCS_HT_MSK_V1) {
u32 nss = 0;
rate_v2 |= RATE_MCS_HT_MSK;
rate_v2 |=
rate_v1 & RATE_HT_MCS_RATE_CODE_MSK_V1;
nss = (rate_v1 & RATE_HT_MCS_MIMO2_MSK) >>
RATE_HT_MCS_NSS_POS_V1;
rate_v2 |= nss << RATE_MCS_NSS_POS;
} else if (rate_v1 & RATE_MCS_VHT_MSK_V1 ||
rate_v1 & RATE_MCS_HE_MSK_V1) {
rate_v2 |= rate_v1 & RATE_VHT_MCS_RATE_CODE_MSK;
rate_v2 |= rate_v1 & RATE_VHT_MCS_MIMO2_MSK;
if (rate_v1 & RATE_MCS_HE_MSK_V1) {
u32 he_type_bits = rate_v1 & RATE_MCS_HE_TYPE_MSK_V1;
u32 he_type = he_type_bits >> RATE_MCS_HE_TYPE_POS_V1;
u32 he_106t = (rate_v1 & RATE_MCS_HE_106T_MSK_V1) >>
RATE_MCS_HE_106T_POS_V1;
u32 he_gi_ltf = (rate_v1 & RATE_MCS_HE_GI_LTF_MSK_V1) >>
RATE_MCS_HE_GI_LTF_POS;
if ((he_type_bits == RATE_MCS_HE_TYPE_SU ||
he_type_bits == RATE_MCS_HE_TYPE_EXT_SU) &&
he_gi_ltf == RATE_MCS_HE_SU_4_LTF)
/* the new rate have an additional bit to
* represent the value 4 rather then using SGI
* bit for this purpose - as it was done in the old
* rate */
he_gi_ltf += (rate_v1 & RATE_MCS_SGI_MSK_V1) >>
RATE_MCS_SGI_POS_V1;
rate_v2 |= he_gi_ltf << RATE_MCS_HE_GI_LTF_POS;
rate_v2 |= he_type << RATE_MCS_HE_TYPE_POS;
rate_v2 |= he_106t << RATE_MCS_HE_106T_POS;
rate_v2 |= rate_v1 & RATE_HE_DUAL_CARRIER_MODE_MSK;
rate_v2 |= RATE_MCS_HE_MSK;
} else {
rate_v2 |= RATE_MCS_VHT_MSK;
}
/* if legacy format */
} else {
u32 legacy_rate = iwl_legacy_rate_to_fw_idx(rate_v1);
if (WARN_ON_ONCE(legacy_rate == IWL_RATE_INVALID))
legacy_rate = (rate_v1 & RATE_MCS_CCK_MSK_V1) ?
IWL_FIRST_CCK_RATE : IWL_FIRST_OFDM_RATE;
rate_v2 |= legacy_rate;
if (!(rate_v1 & RATE_MCS_CCK_MSK_V1))
rate_v2 |= RATE_MCS_LEGACY_OFDM_MSK;
}
/* convert flags */
if (rate_v1 & RATE_MCS_LDPC_MSK_V1)
rate_v2 |= RATE_MCS_LDPC_MSK;
rate_v2 |= (rate_v1 & RATE_MCS_CHAN_WIDTH_MSK_V1) |
(rate_v1 & RATE_MCS_ANT_AB_MSK) |
(rate_v1 & RATE_MCS_STBC_MSK) |
(rate_v1 & RATE_MCS_BF_MSK);
dup = (rate_v1 & RATE_MCS_DUP_MSK_V1) >> RATE_MCS_DUP_POS_V1;
if (dup) {
rate_v2 |= RATE_MCS_DUP_MSK;
rate_v2 |= dup << RATE_MCS_CHAN_WIDTH_POS;
}
if ((!(rate_v1 & RATE_MCS_HE_MSK_V1)) &&
(rate_v1 & RATE_MCS_SGI_MSK_V1))
rate_v2 |= RATE_MCS_SGI_MSK;
return rate_v2;
}
IWL_EXPORT_SYMBOL(iwl_new_rate_from_v1);
int rs_pretty_print_rate(char *buf, int bufsz, const u32 rate)
{
char *type;
u8 mcs = 0, nss = 0;
u8 ant = (rate & RATE_MCS_ANT_AB_MSK) >> RATE_MCS_ANT_POS;
u32 bw = (rate & RATE_MCS_CHAN_WIDTH_MSK) >>
RATE_MCS_CHAN_WIDTH_POS;
u32 format = rate & RATE_MCS_MOD_TYPE_MSK;
bool sgi;
if (format == RATE_MCS_CCK_MSK ||
format == RATE_MCS_LEGACY_OFDM_MSK) {
int legacy_rate = rate & RATE_LEGACY_RATE_MSK;
int index = format == RATE_MCS_CCK_MSK ?
legacy_rate :
legacy_rate + IWL_FIRST_OFDM_RATE;
return scnprintf(buf, bufsz, "Legacy | ANT: %s Rate: %s Mbps",
iwl_rs_pretty_ant(ant),
index == IWL_RATE_INVALID ? "BAD" :
iwl_rate_mcs(index)->mbps);
}
if (format == RATE_MCS_VHT_MSK)
type = "VHT";
else if (format == RATE_MCS_HT_MSK)
type = "HT";
else if (format == RATE_MCS_HE_MSK)
type = "HE";
else if (format == RATE_MCS_EHT_MSK)
type = "EHT";
else
type = "Unknown"; /* shouldn't happen */
mcs = format == RATE_MCS_HT_MSK ?
RATE_HT_MCS_INDEX(rate) :
rate & RATE_MCS_CODE_MSK;
nss = ((rate & RATE_MCS_NSS_MSK)
>> RATE_MCS_NSS_POS) + 1;
sgi = format == RATE_MCS_HE_MSK ?
iwl_he_is_sgi(rate) :
rate & RATE_MCS_SGI_MSK;
return scnprintf(buf, bufsz,
"0x%x: %s | ANT: %s BW: %s MCS: %d NSS: %d %s%s%s%s%s",
rate, type, iwl_rs_pretty_ant(ant), iwl_rs_pretty_bw(bw), mcs, nss,
(sgi) ? "SGI " : "NGI ",
(rate & RATE_MCS_STBC_MSK) ? "STBC " : "",
(rate & RATE_MCS_LDPC_MSK) ? "LDPC " : "",
(rate & RATE_HE_DUAL_CARRIER_MODE_MSK) ? "DCM " : "",
(rate & RATE_MCS_BF_MSK) ? "BF " : "");
}
IWL_EXPORT_SYMBOL(rs_pretty_print_rate);
bool iwl_he_is_sgi(u32 rate_n_flags)
{
u32 type = rate_n_flags & RATE_MCS_HE_TYPE_MSK;
u32 ltf_gi = rate_n_flags & RATE_MCS_HE_GI_LTF_MSK;
if (type == RATE_MCS_HE_TYPE_SU ||
type == RATE_MCS_HE_TYPE_EXT_SU)
return ltf_gi == RATE_MCS_HE_SU_4_LTF_08_GI;
return false;
}
IWL_EXPORT_SYMBOL(iwl_he_is_sgi);
|
