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
|
// SPDX-License-Identifier: ISC
/* Copyright (C) 2020 MediaTek Inc. */
#include "mt7915.h"
#include "eeprom.h"
static u32 mt7915_eeprom_read(struct mt7915_dev *dev, u32 offset)
{
u8 *data = dev->mt76.eeprom.data;
if (data[offset] == 0xff)
mt7915_mcu_get_eeprom(dev, offset);
return data[offset];
}
static int mt7915_eeprom_load(struct mt7915_dev *dev)
{
int ret;
ret = mt76_eeprom_init(&dev->mt76, MT7915_EEPROM_SIZE);
if (ret < 0)
return ret;
memset(dev->mt76.eeprom.data, -1, MT7915_EEPROM_SIZE);
return 0;
}
static int mt7915_check_eeprom(struct mt7915_dev *dev)
{
u8 *eeprom = dev->mt76.eeprom.data;
u16 val;
mt7915_eeprom_read(dev, MT_EE_CHIP_ID);
val = get_unaligned_le16(eeprom);
switch (val) {
case 0x7915:
return 0;
default:
return -EINVAL;
}
}
void mt7915_eeprom_parse_band_config(struct mt7915_phy *phy)
{
struct mt7915_dev *dev = phy->dev;
bool ext_phy = phy != &dev->phy;
u32 val;
val = mt7915_eeprom_read(dev, MT_EE_WIFI_CONF + ext_phy);
val = FIELD_GET(MT_EE_WIFI_CONF_BAND_SEL, val);
switch (val) {
case MT_EE_5GHZ:
phy->mt76->cap.has_5ghz = true;
break;
case MT_EE_2GHZ:
phy->mt76->cap.has_2ghz = true;
break;
default:
phy->mt76->cap.has_2ghz = true;
phy->mt76->cap.has_5ghz = true;
break;
}
}
static void mt7915_eeprom_parse_hw_cap(struct mt7915_dev *dev)
{
u8 nss, tx_mask[2] = {}, *eeprom = dev->mt76.eeprom.data;
mt7915_eeprom_parse_band_config(&dev->phy);
/* read tx mask from eeprom */
tx_mask[0] = FIELD_GET(MT_EE_WIFI_CONF_TX_MASK,
eeprom[MT_EE_WIFI_CONF]);
if (dev->dbdc_support)
tx_mask[1] = FIELD_GET(MT_EE_WIFI_CONF_TX_MASK,
eeprom[MT_EE_WIFI_CONF + 1]);
nss = tx_mask[0] + tx_mask[1];
if (!nss || nss > 4) {
tx_mask[0] = 4;
nss = 4;
}
dev->chainmask = BIT(nss) - 1;
dev->mphy.antenna_mask = BIT(tx_mask[0]) - 1;
dev->phy.chainmask = dev->mphy.antenna_mask;
}
int mt7915_eeprom_init(struct mt7915_dev *dev)
{
int ret;
ret = mt7915_eeprom_load(dev);
if (ret < 0)
return ret;
ret = mt7915_check_eeprom(dev);
if (ret)
return ret;
mt7915_eeprom_parse_hw_cap(dev);
memcpy(dev->mphy.macaddr, dev->mt76.eeprom.data + MT_EE_MAC_ADDR,
ETH_ALEN);
mt76_eeprom_override(&dev->mphy);
return 0;
}
int mt7915_eeprom_get_target_power(struct mt7915_dev *dev,
struct ieee80211_channel *chan,
u8 chain_idx)
{
int index;
bool tssi_on;
if (chain_idx > 3)
return -EINVAL;
tssi_on = mt7915_tssi_enabled(dev, chan->band);
if (chan->band == NL80211_BAND_2GHZ) {
index = MT_EE_TX0_POWER_2G + chain_idx * 3 + !tssi_on;
} else {
int group = tssi_on ?
mt7915_get_channel_group(chan->hw_value) : 8;
index = MT_EE_TX0_POWER_5G + chain_idx * 12 + group;
}
return mt7915_eeprom_read(dev, index);
}
static const u8 sku_cck_delta_map[] = {
SKU_CCK_GROUP0,
SKU_CCK_GROUP0,
SKU_CCK_GROUP1,
SKU_CCK_GROUP1,
};
static const u8 sku_ofdm_delta_map[] = {
SKU_OFDM_GROUP0,
SKU_OFDM_GROUP0,
SKU_OFDM_GROUP1,
SKU_OFDM_GROUP1,
SKU_OFDM_GROUP2,
SKU_OFDM_GROUP2,
SKU_OFDM_GROUP3,
SKU_OFDM_GROUP4,
};
static const u8 sku_mcs_delta_map[] = {
SKU_MCS_GROUP0,
SKU_MCS_GROUP1,
SKU_MCS_GROUP1,
SKU_MCS_GROUP2,
SKU_MCS_GROUP2,
SKU_MCS_GROUP3,
SKU_MCS_GROUP4,
SKU_MCS_GROUP5,
SKU_MCS_GROUP6,
SKU_MCS_GROUP7,
SKU_MCS_GROUP8,
SKU_MCS_GROUP9,
};
#define SKU_GROUP(_mode, _len, _ofs_2g, _ofs_5g, _map) \
[_mode] = { \
.len = _len, \
.offset = { \
_ofs_2g, \
_ofs_5g, \
}, \
.delta_map = _map \
}
const struct sku_group mt7915_sku_groups[] = {
SKU_GROUP(SKU_CCK, 4, 0x252, 0, sku_cck_delta_map),
SKU_GROUP(SKU_OFDM, 8, 0x254, 0x29d, sku_ofdm_delta_map),
SKU_GROUP(SKU_HT_BW20, 8, 0x259, 0x2a2, sku_mcs_delta_map),
SKU_GROUP(SKU_HT_BW40, 9, 0x262, 0x2ab, sku_mcs_delta_map),
SKU_GROUP(SKU_VHT_BW20, 12, 0x259, 0x2a2, sku_mcs_delta_map),
SKU_GROUP(SKU_VHT_BW40, 12, 0x262, 0x2ab, sku_mcs_delta_map),
SKU_GROUP(SKU_VHT_BW80, 12, 0, 0x2b4, sku_mcs_delta_map),
SKU_GROUP(SKU_VHT_BW160, 12, 0, 0, sku_mcs_delta_map),
SKU_GROUP(SKU_HE_RU26, 12, 0x27f, 0x2dd, sku_mcs_delta_map),
SKU_GROUP(SKU_HE_RU52, 12, 0x289, 0x2e7, sku_mcs_delta_map),
SKU_GROUP(SKU_HE_RU106, 12, 0x293, 0x2f1, sku_mcs_delta_map),
SKU_GROUP(SKU_HE_RU242, 12, 0x26b, 0x2bf, sku_mcs_delta_map),
SKU_GROUP(SKU_HE_RU484, 12, 0x275, 0x2c9, sku_mcs_delta_map),
SKU_GROUP(SKU_HE_RU996, 12, 0, 0x2d3, sku_mcs_delta_map),
SKU_GROUP(SKU_HE_RU2x996, 12, 0, 0, sku_mcs_delta_map),
};
static s8
mt7915_get_sku_delta(struct mt7915_dev *dev, u32 addr)
{
u32 val = mt7915_eeprom_read(dev, addr);
s8 delta = FIELD_GET(SKU_DELTA_VAL, val);
if (!(val & SKU_DELTA_EN))
return 0;
return val & SKU_DELTA_ADD ? delta : -delta;
}
static void
mt7915_eeprom_init_sku_band(struct mt7915_dev *dev,
struct ieee80211_supported_band *sband)
{
int i, band = sband->band;
s8 *rate_power = dev->rate_power[band], max_delta = 0;
u8 idx = 0;
for (i = 0; i < ARRAY_SIZE(mt7915_sku_groups); i++) {
const struct sku_group *sku = &mt7915_sku_groups[i];
u32 offset = sku->offset[band];
int j;
if (!offset) {
idx += sku->len;
continue;
}
rate_power[idx++] = mt7915_get_sku_delta(dev, offset);
if (rate_power[idx - 1] > max_delta)
max_delta = rate_power[idx - 1];
if (i == SKU_HT_BW20 || i == SKU_VHT_BW20)
offset += 1;
for (j = 1; j < sku->len; j++) {
u32 addr = offset + sku->delta_map[j];
rate_power[idx++] = mt7915_get_sku_delta(dev, addr);
if (rate_power[idx - 1] > max_delta)
max_delta = rate_power[idx - 1];
}
}
rate_power[idx] = max_delta;
}
void mt7915_eeprom_init_sku(struct mt7915_dev *dev)
{
mt7915_eeprom_init_sku_band(dev, &dev->mphy.sband_2g.sband);
mt7915_eeprom_init_sku_band(dev, &dev->mphy.sband_5g.sband);
}
|
