1 | // SPDX-License-Identifier: ISC |
2 | /* Copyright (C) 2023 MediaTek Inc. */ |
3 | |
4 | #include "mt76_connac.h" |
5 | #include "mt76_connac3_mac.h" |
6 | #include "dma.h" |
7 | |
8 | #define HE_BITS(f) cpu_to_le16(IEEE80211_RADIOTAP_HE_##f) |
9 | #define HE_PREP(f, m, v) le16_encode_bits(le32_get_bits(v, MT_CRXV_HE_##m),\ |
10 | IEEE80211_RADIOTAP_HE_##f) |
11 | |
12 | static void |
13 | mt76_connac3_mac_decode_he_radiotap_ru(struct mt76_rx_status *status, |
14 | struct ieee80211_radiotap_he *he, |
15 | __le32 *rxv) |
16 | { |
17 | u32 ru = le32_get_bits(v: rxv[0], MT_PRXV_HE_RU_ALLOC), offs = 0; |
18 | |
19 | status->bw = RATE_INFO_BW_HE_RU; |
20 | |
21 | switch (ru) { |
22 | case 0 ... 36: |
23 | status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_26; |
24 | offs = ru; |
25 | break; |
26 | case 37 ... 52: |
27 | status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_52; |
28 | offs = ru - 37; |
29 | break; |
30 | case 53 ... 60: |
31 | status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_106; |
32 | offs = ru - 53; |
33 | break; |
34 | case 61 ... 64: |
35 | status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_242; |
36 | offs = ru - 61; |
37 | break; |
38 | case 65 ... 66: |
39 | status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_484; |
40 | offs = ru - 65; |
41 | break; |
42 | case 67: |
43 | status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_996; |
44 | break; |
45 | case 68: |
46 | status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_2x996; |
47 | break; |
48 | } |
49 | |
50 | he->data1 |= HE_BITS(DATA1_BW_RU_ALLOC_KNOWN); |
51 | he->data2 |= HE_BITS(DATA2_RU_OFFSET_KNOWN) | |
52 | le16_encode_bits(v: offs, |
53 | field: IEEE80211_RADIOTAP_HE_DATA2_RU_OFFSET); |
54 | } |
55 | |
56 | #define MU_PREP(f, v) le16_encode_bits(v, IEEE80211_RADIOTAP_HE_MU_##f) |
57 | static void |
58 | mt76_connac3_mac_decode_he_mu_radiotap(struct sk_buff *skb, __le32 *rxv) |
59 | { |
60 | struct mt76_rx_status *status = (struct mt76_rx_status *)skb->cb; |
61 | static const struct ieee80211_radiotap_he_mu mu_known = { |
62 | .flags1 = HE_BITS(MU_FLAGS1_SIG_B_MCS_KNOWN) | |
63 | HE_BITS(MU_FLAGS1_SIG_B_DCM_KNOWN) | |
64 | HE_BITS(MU_FLAGS1_CH1_RU_KNOWN) | |
65 | HE_BITS(MU_FLAGS1_SIG_B_SYMS_USERS_KNOWN), |
66 | .flags2 = HE_BITS(MU_FLAGS2_BW_FROM_SIG_A_BW_KNOWN), |
67 | }; |
68 | struct ieee80211_radiotap_he_mu *he_mu; |
69 | |
70 | status->flag |= RX_FLAG_RADIOTAP_HE_MU; |
71 | |
72 | he_mu = skb_push(skb, len: sizeof(mu_known)); |
73 | memcpy(he_mu, &mu_known, sizeof(mu_known)); |
74 | |
75 | he_mu->flags1 |= MU_PREP(FLAGS1_SIG_B_MCS, status->rate_idx); |
76 | if (status->he_dcm) |
77 | he_mu->flags1 |= MU_PREP(FLAGS1_SIG_B_DCM, status->he_dcm); |
78 | |
79 | he_mu->flags2 |= MU_PREP(FLAGS2_BW_FROM_SIG_A_BW, status->bw) | |
80 | MU_PREP(FLAGS2_SIG_B_SYMS_USERS, |
81 | le32_get_bits(rxv[4], MT_CRXV_HE_NUM_USER)); |
82 | |
83 | he_mu->ru_ch1[0] = le32_get_bits(v: rxv[16], MT_CRXV_HE_RU0) & 0xff; |
84 | |
85 | if (status->bw >= RATE_INFO_BW_40) { |
86 | he_mu->flags1 |= HE_BITS(MU_FLAGS1_CH2_RU_KNOWN); |
87 | he_mu->ru_ch2[0] = le32_get_bits(v: rxv[16], MT_CRXV_HE_RU1) & 0xff; |
88 | } |
89 | |
90 | if (status->bw >= RATE_INFO_BW_80) { |
91 | u32 ru_h, ru_l; |
92 | |
93 | he_mu->ru_ch1[1] = le32_get_bits(v: rxv[16], MT_CRXV_HE_RU2) & 0xff; |
94 | |
95 | ru_l = le32_get_bits(v: rxv[16], MT_CRXV_HE_RU3_L); |
96 | ru_h = le32_get_bits(v: rxv[17], MT_CRXV_HE_RU3_H) & 0x7; |
97 | he_mu->ru_ch2[1] = (u8)(ru_l | ru_h << 4); |
98 | } |
99 | } |
100 | |
101 | void mt76_connac3_mac_decode_he_radiotap(struct sk_buff *skb, __le32 *rxv, |
102 | u8 mode) |
103 | { |
104 | struct mt76_rx_status *status = (struct mt76_rx_status *)skb->cb; |
105 | static const struct ieee80211_radiotap_he known = { |
106 | .data1 = HE_BITS(DATA1_DATA_MCS_KNOWN) | |
107 | HE_BITS(DATA1_DATA_DCM_KNOWN) | |
108 | HE_BITS(DATA1_STBC_KNOWN) | |
109 | HE_BITS(DATA1_CODING_KNOWN) | |
110 | HE_BITS(DATA1_LDPC_XSYMSEG_KNOWN) | |
111 | HE_BITS(DATA1_DOPPLER_KNOWN) | |
112 | HE_BITS(DATA1_SPTL_REUSE_KNOWN) | |
113 | HE_BITS(DATA1_BSS_COLOR_KNOWN), |
114 | .data2 = HE_BITS(DATA2_GI_KNOWN) | |
115 | HE_BITS(DATA2_TXBF_KNOWN) | |
116 | HE_BITS(DATA2_PE_DISAMBIG_KNOWN) | |
117 | HE_BITS(DATA2_TXOP_KNOWN), |
118 | }; |
119 | u32 ltf_size = le32_get_bits(v: rxv[4], MT_CRXV_HE_LTF_SIZE) + 1; |
120 | struct ieee80211_radiotap_he *he; |
121 | |
122 | status->flag |= RX_FLAG_RADIOTAP_HE; |
123 | |
124 | he = skb_push(skb, len: sizeof(known)); |
125 | memcpy(he, &known, sizeof(known)); |
126 | |
127 | he->data3 = HE_PREP(DATA3_BSS_COLOR, BSS_COLOR, rxv[9]) | |
128 | HE_PREP(DATA3_LDPC_XSYMSEG, LDPC_EXT_SYM, rxv[4]); |
129 | he->data4 = HE_PREP(DATA4_SU_MU_SPTL_REUSE, SR_MASK, rxv[13]); |
130 | he->data5 = HE_PREP(DATA5_PE_DISAMBIG, PE_DISAMBIG, rxv[5]) | |
131 | le16_encode_bits(v: ltf_size, |
132 | field: IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE); |
133 | if (le32_to_cpu(rxv[0]) & MT_PRXV_TXBF) |
134 | he->data5 |= HE_BITS(DATA5_TXBF); |
135 | he->data6 = HE_PREP(DATA6_TXOP, TXOP_DUR, rxv[9]) | |
136 | HE_PREP(DATA6_DOPPLER, DOPPLER, rxv[9]); |
137 | |
138 | switch (mode) { |
139 | case MT_PHY_TYPE_HE_SU: |
140 | he->data1 |= HE_BITS(DATA1_FORMAT_SU) | |
141 | HE_BITS(DATA1_UL_DL_KNOWN) | |
142 | HE_BITS(DATA1_BEAM_CHANGE_KNOWN) | |
143 | HE_BITS(DATA1_BW_RU_ALLOC_KNOWN); |
144 | |
145 | he->data3 |= HE_PREP(DATA3_BEAM_CHANGE, BEAM_CHNG, rxv[8]) | |
146 | HE_PREP(DATA3_UL_DL, UPLINK, rxv[5]); |
147 | break; |
148 | case MT_PHY_TYPE_HE_EXT_SU: |
149 | he->data1 |= HE_BITS(DATA1_FORMAT_EXT_SU) | |
150 | HE_BITS(DATA1_UL_DL_KNOWN) | |
151 | HE_BITS(DATA1_BW_RU_ALLOC_KNOWN); |
152 | |
153 | he->data3 |= HE_PREP(DATA3_UL_DL, UPLINK, rxv[5]); |
154 | break; |
155 | case MT_PHY_TYPE_HE_MU: |
156 | he->data1 |= HE_BITS(DATA1_FORMAT_MU) | |
157 | HE_BITS(DATA1_UL_DL_KNOWN); |
158 | |
159 | he->data3 |= HE_PREP(DATA3_UL_DL, UPLINK, rxv[5]); |
160 | he->data4 |= HE_PREP(DATA4_MU_STA_ID, MU_AID, rxv[8]); |
161 | |
162 | mt76_connac3_mac_decode_he_radiotap_ru(status, he, rxv); |
163 | mt76_connac3_mac_decode_he_mu_radiotap(skb, rxv); |
164 | break; |
165 | case MT_PHY_TYPE_HE_TB: |
166 | he->data1 |= HE_BITS(DATA1_FORMAT_TRIG) | |
167 | HE_BITS(DATA1_SPTL_REUSE2_KNOWN) | |
168 | HE_BITS(DATA1_SPTL_REUSE3_KNOWN) | |
169 | HE_BITS(DATA1_SPTL_REUSE4_KNOWN); |
170 | |
171 | he->data4 |= HE_PREP(DATA4_TB_SPTL_REUSE1, SR_MASK, rxv[13]) | |
172 | HE_PREP(DATA4_TB_SPTL_REUSE2, SR1_MASK, rxv[13]) | |
173 | HE_PREP(DATA4_TB_SPTL_REUSE3, SR2_MASK, rxv[13]) | |
174 | HE_PREP(DATA4_TB_SPTL_REUSE4, SR3_MASK, rxv[13]); |
175 | |
176 | mt76_connac3_mac_decode_he_radiotap_ru(status, he, rxv); |
177 | break; |
178 | default: |
179 | break; |
180 | } |
181 | } |
182 | EXPORT_SYMBOL_GPL(mt76_connac3_mac_decode_he_radiotap); |
183 | |