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 EHT_BITS(f) cpu_to_le32(IEEE80211_RADIOTAP_EHT_##f) 10 #define HE_PREP(f, m, v) le16_encode_bits(le32_get_bits(v, MT_CRXV_HE_##m),\ 11 IEEE80211_RADIOTAP_HE_##f) 12 #define EHT_PREP(f, m, v) le32_encode_bits(le32_get_bits(v, MT_CRXV_EHT_##m),\ 13 IEEE80211_RADIOTAP_EHT_##f) 14 15 static void 16 mt76_connac3_mac_decode_he_radiotap_ru(struct mt76_rx_status *status, 17 struct ieee80211_radiotap_he *he, 18 __le32 *rxv) 19 { 20 u32 ru = le32_get_bits(rxv[0], MT_PRXV_HE_RU_ALLOC), offs = 0; 21 22 status->bw = RATE_INFO_BW_HE_RU; 23 24 switch (ru) { 25 case 0 ... 36: 26 status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_26; 27 offs = ru; 28 break; 29 case 37 ... 52: 30 status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_52; 31 offs = ru - 37; 32 break; 33 case 53 ... 60: 34 status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_106; 35 offs = ru - 53; 36 break; 37 case 61 ... 64: 38 status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_242; 39 offs = ru - 61; 40 break; 41 case 65 ... 66: 42 status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_484; 43 offs = ru - 65; 44 break; 45 case 67: 46 status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_996; 47 break; 48 case 68: 49 status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_2x996; 50 break; 51 } 52 53 he->data1 |= HE_BITS(DATA1_BW_RU_ALLOC_KNOWN); 54 he->data2 |= HE_BITS(DATA2_RU_OFFSET_KNOWN) | 55 le16_encode_bits(offs, 56 IEEE80211_RADIOTAP_HE_DATA2_RU_OFFSET); 57 } 58 59 #define MU_PREP(f, v) le16_encode_bits(v, IEEE80211_RADIOTAP_HE_MU_##f) 60 static void 61 mt76_connac3_mac_decode_he_mu_radiotap(struct sk_buff *skb, __le32 *rxv) 62 { 63 struct mt76_rx_status *status = (struct mt76_rx_status *)skb->cb; 64 static const struct ieee80211_radiotap_he_mu mu_known = { 65 .flags1 = HE_BITS(MU_FLAGS1_SIG_B_MCS_KNOWN) | 66 HE_BITS(MU_FLAGS1_SIG_B_DCM_KNOWN) | 67 HE_BITS(MU_FLAGS1_CH1_RU_KNOWN) | 68 HE_BITS(MU_FLAGS1_SIG_B_SYMS_USERS_KNOWN), 69 .flags2 = HE_BITS(MU_FLAGS2_BW_FROM_SIG_A_BW_KNOWN), 70 }; 71 struct ieee80211_radiotap_he_mu *he_mu; 72 73 status->flag |= RX_FLAG_RADIOTAP_HE_MU; 74 75 he_mu = skb_push(skb, sizeof(mu_known)); 76 memcpy(he_mu, &mu_known, sizeof(mu_known)); 77 78 he_mu->flags1 |= MU_PREP(FLAGS1_SIG_B_MCS, status->rate_idx); 79 if (status->he_dcm) 80 he_mu->flags1 |= MU_PREP(FLAGS1_SIG_B_DCM, status->he_dcm); 81 82 he_mu->flags2 |= MU_PREP(FLAGS2_BW_FROM_SIG_A_BW, status->bw) | 83 MU_PREP(FLAGS2_SIG_B_SYMS_USERS, 84 le32_get_bits(rxv[4], MT_CRXV_HE_NUM_USER)); 85 86 he_mu->ru_ch1[0] = le32_get_bits(rxv[16], MT_CRXV_HE_RU0) & 0xff; 87 88 if (status->bw >= RATE_INFO_BW_40) { 89 he_mu->flags1 |= HE_BITS(MU_FLAGS1_CH2_RU_KNOWN); 90 he_mu->ru_ch2[0] = le32_get_bits(rxv[16], MT_CRXV_HE_RU1) & 0xff; 91 } 92 93 if (status->bw >= RATE_INFO_BW_80) { 94 u32 ru_h, ru_l; 95 96 he_mu->ru_ch1[1] = le32_get_bits(rxv[16], MT_CRXV_HE_RU2) & 0xff; 97 98 ru_l = le32_get_bits(rxv[16], MT_CRXV_HE_RU3_L); 99 ru_h = le32_get_bits(rxv[17], MT_CRXV_HE_RU3_H) & 0x7; 100 he_mu->ru_ch2[1] = (u8)(ru_l | ru_h << 4); 101 } 102 } 103 104 void mt76_connac3_mac_decode_he_radiotap(struct sk_buff *skb, __le32 *rxv, 105 u8 mode) 106 { 107 struct mt76_rx_status *status = (struct mt76_rx_status *)skb->cb; 108 static const struct ieee80211_radiotap_he known = { 109 .data1 = HE_BITS(DATA1_DATA_MCS_KNOWN) | 110 HE_BITS(DATA1_DATA_DCM_KNOWN) | 111 HE_BITS(DATA1_STBC_KNOWN) | 112 HE_BITS(DATA1_CODING_KNOWN) | 113 HE_BITS(DATA1_LDPC_XSYMSEG_KNOWN) | 114 HE_BITS(DATA1_DOPPLER_KNOWN) | 115 HE_BITS(DATA1_SPTL_REUSE_KNOWN) | 116 HE_BITS(DATA1_BSS_COLOR_KNOWN), 117 .data2 = HE_BITS(DATA2_GI_KNOWN) | 118 HE_BITS(DATA2_TXBF_KNOWN) | 119 HE_BITS(DATA2_PE_DISAMBIG_KNOWN) | 120 HE_BITS(DATA2_TXOP_KNOWN), 121 }; 122 u32 ltf_size = le32_get_bits(rxv[4], MT_CRXV_HE_LTF_SIZE) + 1; 123 struct ieee80211_radiotap_he *he; 124 125 status->flag |= RX_FLAG_RADIOTAP_HE; 126 127 he = skb_push(skb, sizeof(known)); 128 memcpy(he, &known, sizeof(known)); 129 130 he->data3 = HE_PREP(DATA3_BSS_COLOR, BSS_COLOR, rxv[9]) | 131 HE_PREP(DATA3_LDPC_XSYMSEG, LDPC_EXT_SYM, rxv[4]); 132 he->data4 = HE_PREP(DATA4_SU_MU_SPTL_REUSE, SR_MASK, rxv[13]); 133 he->data5 = HE_PREP(DATA5_PE_DISAMBIG, PE_DISAMBIG, rxv[5]) | 134 le16_encode_bits(ltf_size, 135 IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE); 136 if (le32_to_cpu(rxv[0]) & MT_PRXV_TXBF) 137 he->data5 |= HE_BITS(DATA5_TXBF); 138 he->data6 = HE_PREP(DATA6_TXOP, TXOP_DUR, rxv[9]) | 139 HE_PREP(DATA6_DOPPLER, DOPPLER, rxv[9]); 140 141 switch (mode) { 142 case MT_PHY_TYPE_HE_SU: 143 he->data1 |= HE_BITS(DATA1_FORMAT_SU) | 144 HE_BITS(DATA1_UL_DL_KNOWN) | 145 HE_BITS(DATA1_BEAM_CHANGE_KNOWN) | 146 HE_BITS(DATA1_BW_RU_ALLOC_KNOWN); 147 148 he->data3 |= HE_PREP(DATA3_BEAM_CHANGE, BEAM_CHNG, rxv[8]) | 149 HE_PREP(DATA3_UL_DL, UPLINK, rxv[5]); 150 break; 151 case MT_PHY_TYPE_HE_EXT_SU: 152 he->data1 |= HE_BITS(DATA1_FORMAT_EXT_SU) | 153 HE_BITS(DATA1_UL_DL_KNOWN) | 154 HE_BITS(DATA1_BW_RU_ALLOC_KNOWN); 155 156 he->data3 |= HE_PREP(DATA3_UL_DL, UPLINK, rxv[5]); 157 break; 158 case MT_PHY_TYPE_HE_MU: 159 he->data1 |= HE_BITS(DATA1_FORMAT_MU) | 160 HE_BITS(DATA1_UL_DL_KNOWN); 161 162 he->data3 |= HE_PREP(DATA3_UL_DL, UPLINK, rxv[5]); 163 he->data4 |= HE_PREP(DATA4_MU_STA_ID, MU_AID, rxv[8]); 164 165 mt76_connac3_mac_decode_he_radiotap_ru(status, he, rxv); 166 mt76_connac3_mac_decode_he_mu_radiotap(skb, rxv); 167 break; 168 case MT_PHY_TYPE_HE_TB: 169 he->data1 |= HE_BITS(DATA1_FORMAT_TRIG) | 170 HE_BITS(DATA1_SPTL_REUSE2_KNOWN) | 171 HE_BITS(DATA1_SPTL_REUSE3_KNOWN) | 172 HE_BITS(DATA1_SPTL_REUSE4_KNOWN); 173 174 he->data4 |= HE_PREP(DATA4_TB_SPTL_REUSE1, SR_MASK, rxv[13]) | 175 HE_PREP(DATA4_TB_SPTL_REUSE2, SR1_MASK, rxv[13]) | 176 HE_PREP(DATA4_TB_SPTL_REUSE3, SR2_MASK, rxv[13]) | 177 HE_PREP(DATA4_TB_SPTL_REUSE4, SR3_MASK, rxv[13]); 178 179 mt76_connac3_mac_decode_he_radiotap_ru(status, he, rxv); 180 break; 181 default: 182 break; 183 } 184 } 185 EXPORT_SYMBOL_GPL(mt76_connac3_mac_decode_he_radiotap); 186 187 static void * 188 mt76_connac3_mac_radiotap_push_tlv(struct sk_buff *skb, u16 type, u16 len) 189 { 190 struct ieee80211_radiotap_tlv *tlv; 191 192 tlv = skb_push(skb, sizeof(*tlv) + len); 193 tlv->type = cpu_to_le16(type); 194 tlv->len = cpu_to_le16(len); 195 memset(tlv->data, 0, len); 196 197 return tlv->data; 198 } 199 200 void mt76_connac3_mac_decode_eht_radiotap(struct sk_buff *skb, __le32 *rxv, 201 u8 mode) 202 { 203 struct mt76_rx_status *status = (struct mt76_rx_status *)skb->cb; 204 struct ieee80211_radiotap_eht_usig *usig; 205 struct ieee80211_radiotap_eht *eht; 206 u32 ltf_size = le32_get_bits(rxv[4], MT_CRXV_HE_LTF_SIZE) + 1; 207 u8 bw = FIELD_GET(MT_PRXV_FRAME_MODE, le32_to_cpu(rxv[2])); 208 209 if (WARN_ONCE(skb_mac_header(skb) != skb->data, 210 "Should push tlv at the top of mac hdr")) 211 return; 212 213 eht = mt76_connac3_mac_radiotap_push_tlv(skb, IEEE80211_RADIOTAP_EHT, 214 sizeof(*eht) + sizeof(u32)); 215 usig = mt76_connac3_mac_radiotap_push_tlv(skb, IEEE80211_RADIOTAP_EHT_USIG, 216 sizeof(*usig)); 217 218 status->flag |= RX_FLAG_RADIOTAP_TLV_AT_END; 219 220 eht->known |= EHT_BITS(KNOWN_SPATIAL_REUSE) | 221 EHT_BITS(KNOWN_GI) | 222 EHT_BITS(KNOWN_EHT_LTF) | 223 EHT_BITS(KNOWN_LDPC_EXTRA_SYM_OM) | 224 EHT_BITS(KNOWN_PE_DISAMBIGUITY_OM) | 225 EHT_BITS(KNOWN_NSS_S); 226 227 eht->data[0] |= 228 EHT_PREP(DATA0_SPATIAL_REUSE, SR_MASK, rxv[13]) | 229 cpu_to_le32(FIELD_PREP(IEEE80211_RADIOTAP_EHT_DATA0_GI, status->eht.gi) | 230 FIELD_PREP(IEEE80211_RADIOTAP_EHT_DATA0_LTF, ltf_size)) | 231 EHT_PREP(DATA0_PE_DISAMBIGUITY_OM, PE_DISAMBIG, rxv[5]) | 232 EHT_PREP(DATA0_LDPC_EXTRA_SYM_OM, LDPC_EXT_SYM, rxv[4]); 233 234 eht->data[7] |= le32_encode_bits(status->nss, IEEE80211_RADIOTAP_EHT_DATA7_NSS_S); 235 236 eht->user_info[0] |= 237 EHT_BITS(USER_INFO_MCS_KNOWN) | 238 EHT_BITS(USER_INFO_CODING_KNOWN) | 239 EHT_BITS(USER_INFO_NSS_KNOWN_O) | 240 EHT_BITS(USER_INFO_BEAMFORMING_KNOWN_O) | 241 EHT_BITS(USER_INFO_DATA_FOR_USER) | 242 le32_encode_bits(status->rate_idx, IEEE80211_RADIOTAP_EHT_USER_INFO_MCS) | 243 le32_encode_bits(status->nss, IEEE80211_RADIOTAP_EHT_USER_INFO_NSS_O); 244 245 if (le32_to_cpu(rxv[0]) & MT_PRXV_TXBF) 246 eht->user_info[0] |= EHT_BITS(USER_INFO_BEAMFORMING_O); 247 248 if (le32_to_cpu(rxv[0]) & MT_PRXV_HT_AD_CODE) 249 eht->user_info[0] |= EHT_BITS(USER_INFO_CODING); 250 251 if (mode == MT_PHY_TYPE_EHT_MU) 252 eht->user_info[0] |= EHT_BITS(USER_INFO_STA_ID_KNOWN) | 253 EHT_PREP(USER_INFO_STA_ID, MU_AID, rxv[8]); 254 255 usig->common |= 256 EHT_BITS(USIG_COMMON_PHY_VER_KNOWN) | 257 EHT_BITS(USIG_COMMON_BW_KNOWN) | 258 EHT_BITS(USIG_COMMON_UL_DL_KNOWN) | 259 EHT_BITS(USIG_COMMON_BSS_COLOR_KNOWN) | 260 EHT_BITS(USIG_COMMON_TXOP_KNOWN) | 261 le32_encode_bits(0, IEEE80211_RADIOTAP_EHT_USIG_COMMON_PHY_VER) | 262 le32_encode_bits(bw, IEEE80211_RADIOTAP_EHT_USIG_COMMON_BW) | 263 EHT_PREP(USIG_COMMON_UL_DL, UPLINK, rxv[5]) | 264 EHT_PREP(USIG_COMMON_BSS_COLOR, BSS_COLOR, rxv[9]) | 265 EHT_PREP(USIG_COMMON_TXOP, TXOP_DUR, rxv[9]); 266 } 267 EXPORT_SYMBOL_GPL(mt76_connac3_mac_decode_eht_radiotap); 268