1 // SPDX-License-Identifier: ISC 2 /* Copyright (C) 2023 MediaTek Inc. */ 3 4 #include <linux/devcoredump.h> 5 #include <linux/etherdevice.h> 6 #include <linux/timekeeping.h> 7 #include "mt7925.h" 8 #include "../dma.h" 9 #include "mac.h" 10 #include "mcu.h" 11 12 bool mt7925_mac_wtbl_update(struct mt792x_dev *dev, int idx, u32 mask) 13 { 14 mt76_rmw(dev, MT_WTBL_UPDATE, MT_WTBL_UPDATE_WLAN_IDX, 15 FIELD_PREP(MT_WTBL_UPDATE_WLAN_IDX, idx) | mask); 16 17 return mt76_poll(dev, MT_WTBL_UPDATE, MT_WTBL_UPDATE_BUSY, 18 0, 5000); 19 } 20 21 static void mt7925_mac_sta_poll(struct mt792x_dev *dev) 22 { 23 static const u8 ac_to_tid[] = { 24 [IEEE80211_AC_BE] = 0, 25 [IEEE80211_AC_BK] = 1, 26 [IEEE80211_AC_VI] = 4, 27 [IEEE80211_AC_VO] = 6 28 }; 29 struct ieee80211_sta *sta; 30 struct mt792x_sta *msta; 31 u32 tx_time[IEEE80211_NUM_ACS], rx_time[IEEE80211_NUM_ACS]; 32 LIST_HEAD(sta_poll_list); 33 struct rate_info *rate; 34 s8 rssi[4]; 35 int i; 36 37 spin_lock_bh(&dev->mt76.sta_poll_lock); 38 list_splice_init(&dev->mt76.sta_poll_list, &sta_poll_list); 39 spin_unlock_bh(&dev->mt76.sta_poll_lock); 40 41 while (true) { 42 bool clear = false; 43 u32 addr, val; 44 u16 idx; 45 u8 bw; 46 47 if (list_empty(&sta_poll_list)) 48 break; 49 msta = list_first_entry(&sta_poll_list, 50 struct mt792x_sta, wcid.poll_list); 51 spin_lock_bh(&dev->mt76.sta_poll_lock); 52 list_del_init(&msta->wcid.poll_list); 53 spin_unlock_bh(&dev->mt76.sta_poll_lock); 54 55 idx = msta->wcid.idx; 56 addr = mt7925_mac_wtbl_lmac_addr(dev, idx, MT_WTBL_AC0_CTT_OFFSET); 57 58 for (i = 0; i < IEEE80211_NUM_ACS; i++) { 59 u32 tx_last = msta->airtime_ac[i]; 60 u32 rx_last = msta->airtime_ac[i + 4]; 61 62 msta->airtime_ac[i] = mt76_rr(dev, addr); 63 msta->airtime_ac[i + 4] = mt76_rr(dev, addr + 4); 64 65 tx_time[i] = msta->airtime_ac[i] - tx_last; 66 rx_time[i] = msta->airtime_ac[i + 4] - rx_last; 67 68 if ((tx_last | rx_last) & BIT(30)) 69 clear = true; 70 71 addr += 8; 72 } 73 74 if (clear) { 75 mt7925_mac_wtbl_update(dev, idx, 76 MT_WTBL_UPDATE_ADM_COUNT_CLEAR); 77 memset(msta->airtime_ac, 0, sizeof(msta->airtime_ac)); 78 } 79 80 if (!msta->wcid.sta) 81 continue; 82 83 sta = container_of((void *)msta, struct ieee80211_sta, 84 drv_priv); 85 for (i = 0; i < IEEE80211_NUM_ACS; i++) { 86 u8 q = mt76_connac_lmac_mapping(i); 87 u32 tx_cur = tx_time[q]; 88 u32 rx_cur = rx_time[q]; 89 u8 tid = ac_to_tid[i]; 90 91 if (!tx_cur && !rx_cur) 92 continue; 93 94 ieee80211_sta_register_airtime(sta, tid, tx_cur, 95 rx_cur); 96 } 97 98 /* We don't support reading GI info from txs packets. 99 * For accurate tx status reporting and AQL improvement, 100 * we need to make sure that flags match so polling GI 101 * from per-sta counters directly. 102 */ 103 rate = &msta->wcid.rate; 104 105 switch (rate->bw) { 106 case RATE_INFO_BW_160: 107 bw = IEEE80211_STA_RX_BW_160; 108 break; 109 case RATE_INFO_BW_80: 110 bw = IEEE80211_STA_RX_BW_80; 111 break; 112 case RATE_INFO_BW_40: 113 bw = IEEE80211_STA_RX_BW_40; 114 break; 115 default: 116 bw = IEEE80211_STA_RX_BW_20; 117 break; 118 } 119 120 addr = mt7925_mac_wtbl_lmac_addr(dev, idx, 6); 121 val = mt76_rr(dev, addr); 122 if (rate->flags & RATE_INFO_FLAGS_EHT_MCS) { 123 addr = mt7925_mac_wtbl_lmac_addr(dev, idx, 5); 124 val = mt76_rr(dev, addr); 125 rate->eht_gi = FIELD_GET(GENMASK(25, 24), val); 126 } else if (rate->flags & RATE_INFO_FLAGS_HE_MCS) { 127 u8 offs = MT_WTBL_TXRX_RATE_G2_HE + 2 * bw; 128 129 rate->he_gi = (val & (0x3 << offs)) >> offs; 130 } else if (rate->flags & 131 (RATE_INFO_FLAGS_VHT_MCS | RATE_INFO_FLAGS_MCS)) { 132 if (val & BIT(MT_WTBL_TXRX_RATE_G2 + bw)) 133 rate->flags |= RATE_INFO_FLAGS_SHORT_GI; 134 else 135 rate->flags &= ~RATE_INFO_FLAGS_SHORT_GI; 136 } 137 138 /* get signal strength of resp frames (CTS/BA/ACK) */ 139 addr = mt7925_mac_wtbl_lmac_addr(dev, idx, 34); 140 val = mt76_rr(dev, addr); 141 142 rssi[0] = to_rssi(GENMASK(7, 0), val); 143 rssi[1] = to_rssi(GENMASK(15, 8), val); 144 rssi[2] = to_rssi(GENMASK(23, 16), val); 145 rssi[3] = to_rssi(GENMASK(31, 14), val); 146 147 msta->ack_signal = 148 mt76_rx_signal(msta->vif->phy->mt76->antenna_mask, rssi); 149 150 ewma_avg_signal_add(&msta->avg_ack_signal, -msta->ack_signal); 151 } 152 } 153 154 void mt7925_mac_set_fixed_rate_table(struct mt792x_dev *dev, 155 u8 tbl_idx, u16 rate_idx) 156 { 157 u32 ctrl = MT_WTBL_ITCR_WR | MT_WTBL_ITCR_EXEC | tbl_idx; 158 159 mt76_wr(dev, MT_WTBL_ITDR0, rate_idx); 160 /* use wtbl spe idx */ 161 mt76_wr(dev, MT_WTBL_ITDR1, MT_WTBL_SPE_IDX_SEL); 162 mt76_wr(dev, MT_WTBL_ITCR, ctrl); 163 } 164 165 /* The HW does not translate the mac header to 802.3 for mesh point */ 166 static int mt7925_reverse_frag0_hdr_trans(struct sk_buff *skb, u16 hdr_gap) 167 { 168 struct mt76_rx_status *status = (struct mt76_rx_status *)skb->cb; 169 struct ethhdr *eth_hdr = (struct ethhdr *)(skb->data + hdr_gap); 170 struct mt792x_sta *msta = (struct mt792x_sta *)status->wcid; 171 __le32 *rxd = (__le32 *)skb->data; 172 struct ieee80211_sta *sta; 173 struct ieee80211_vif *vif; 174 struct ieee80211_hdr hdr; 175 u16 frame_control; 176 177 if (le32_get_bits(rxd[3], MT_RXD3_NORMAL_ADDR_TYPE) != 178 MT_RXD3_NORMAL_U2M) 179 return -EINVAL; 180 181 if (!(le32_to_cpu(rxd[1]) & MT_RXD1_NORMAL_GROUP_4)) 182 return -EINVAL; 183 184 if (!msta || !msta->vif) 185 return -EINVAL; 186 187 sta = container_of((void *)msta, struct ieee80211_sta, drv_priv); 188 vif = container_of((void *)msta->vif, struct ieee80211_vif, drv_priv); 189 190 /* store the info from RXD and ethhdr to avoid being overridden */ 191 frame_control = le32_get_bits(rxd[8], MT_RXD8_FRAME_CONTROL); 192 hdr.frame_control = cpu_to_le16(frame_control); 193 hdr.seq_ctrl = cpu_to_le16(le32_get_bits(rxd[10], MT_RXD10_SEQ_CTRL)); 194 hdr.duration_id = 0; 195 196 ether_addr_copy(hdr.addr1, vif->addr); 197 ether_addr_copy(hdr.addr2, sta->addr); 198 switch (frame_control & (IEEE80211_FCTL_TODS | 199 IEEE80211_FCTL_FROMDS)) { 200 case 0: 201 ether_addr_copy(hdr.addr3, vif->bss_conf.bssid); 202 break; 203 case IEEE80211_FCTL_FROMDS: 204 ether_addr_copy(hdr.addr3, eth_hdr->h_source); 205 break; 206 case IEEE80211_FCTL_TODS: 207 ether_addr_copy(hdr.addr3, eth_hdr->h_dest); 208 break; 209 case IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS: 210 ether_addr_copy(hdr.addr3, eth_hdr->h_dest); 211 ether_addr_copy(hdr.addr4, eth_hdr->h_source); 212 break; 213 default: 214 break; 215 } 216 217 skb_pull(skb, hdr_gap + sizeof(struct ethhdr) - 2); 218 if (eth_hdr->h_proto == cpu_to_be16(ETH_P_AARP) || 219 eth_hdr->h_proto == cpu_to_be16(ETH_P_IPX)) 220 ether_addr_copy(skb_push(skb, ETH_ALEN), bridge_tunnel_header); 221 else if (be16_to_cpu(eth_hdr->h_proto) >= ETH_P_802_3_MIN) 222 ether_addr_copy(skb_push(skb, ETH_ALEN), rfc1042_header); 223 else 224 skb_pull(skb, 2); 225 226 if (ieee80211_has_order(hdr.frame_control)) 227 memcpy(skb_push(skb, IEEE80211_HT_CTL_LEN), &rxd[11], 228 IEEE80211_HT_CTL_LEN); 229 if (ieee80211_is_data_qos(hdr.frame_control)) { 230 __le16 qos_ctrl; 231 232 qos_ctrl = cpu_to_le16(le32_get_bits(rxd[10], MT_RXD10_QOS_CTL)); 233 memcpy(skb_push(skb, IEEE80211_QOS_CTL_LEN), &qos_ctrl, 234 IEEE80211_QOS_CTL_LEN); 235 } 236 237 if (ieee80211_has_a4(hdr.frame_control)) 238 memcpy(skb_push(skb, sizeof(hdr)), &hdr, sizeof(hdr)); 239 else 240 memcpy(skb_push(skb, sizeof(hdr) - 6), &hdr, sizeof(hdr) - 6); 241 242 return 0; 243 } 244 245 static int 246 mt7925_mac_fill_rx_rate(struct mt792x_dev *dev, 247 struct mt76_rx_status *status, 248 struct ieee80211_supported_band *sband, 249 __le32 *rxv, u8 *mode) 250 { 251 u32 v0, v2; 252 u8 stbc, gi, bw, dcm, nss; 253 int i, idx; 254 bool cck = false; 255 256 v0 = le32_to_cpu(rxv[0]); 257 v2 = le32_to_cpu(rxv[2]); 258 259 idx = FIELD_GET(MT_PRXV_TX_RATE, v0); 260 i = idx; 261 nss = FIELD_GET(MT_PRXV_NSTS, v0) + 1; 262 263 stbc = FIELD_GET(MT_PRXV_HT_STBC, v2); 264 gi = FIELD_GET(MT_PRXV_HT_SHORT_GI, v2); 265 *mode = FIELD_GET(MT_PRXV_TX_MODE, v2); 266 dcm = FIELD_GET(MT_PRXV_DCM, v2); 267 bw = FIELD_GET(MT_PRXV_FRAME_MODE, v2); 268 269 switch (*mode) { 270 case MT_PHY_TYPE_CCK: 271 cck = true; 272 fallthrough; 273 case MT_PHY_TYPE_OFDM: 274 i = mt76_get_rate(&dev->mt76, sband, i, cck); 275 break; 276 case MT_PHY_TYPE_HT_GF: 277 case MT_PHY_TYPE_HT: 278 status->encoding = RX_ENC_HT; 279 if (gi) 280 status->enc_flags |= RX_ENC_FLAG_SHORT_GI; 281 if (i > 31) 282 return -EINVAL; 283 break; 284 case MT_PHY_TYPE_VHT: 285 status->nss = nss; 286 status->encoding = RX_ENC_VHT; 287 if (gi) 288 status->enc_flags |= RX_ENC_FLAG_SHORT_GI; 289 if (i > 11) 290 return -EINVAL; 291 break; 292 case MT_PHY_TYPE_HE_MU: 293 case MT_PHY_TYPE_HE_SU: 294 case MT_PHY_TYPE_HE_EXT_SU: 295 case MT_PHY_TYPE_HE_TB: 296 status->nss = nss; 297 status->encoding = RX_ENC_HE; 298 i &= GENMASK(3, 0); 299 300 if (gi <= NL80211_RATE_INFO_HE_GI_3_2) 301 status->he_gi = gi; 302 303 status->he_dcm = dcm; 304 break; 305 case MT_PHY_TYPE_EHT_SU: 306 case MT_PHY_TYPE_EHT_TRIG: 307 case MT_PHY_TYPE_EHT_MU: 308 status->nss = nss; 309 status->encoding = RX_ENC_EHT; 310 i &= GENMASK(3, 0); 311 312 if (gi <= NL80211_RATE_INFO_EHT_GI_3_2) 313 status->eht.gi = gi; 314 break; 315 default: 316 return -EINVAL; 317 } 318 status->rate_idx = i; 319 320 switch (bw) { 321 case IEEE80211_STA_RX_BW_20: 322 break; 323 case IEEE80211_STA_RX_BW_40: 324 if (*mode & MT_PHY_TYPE_HE_EXT_SU && 325 (idx & MT_PRXV_TX_ER_SU_106T)) { 326 status->bw = RATE_INFO_BW_HE_RU; 327 status->he_ru = 328 NL80211_RATE_INFO_HE_RU_ALLOC_106; 329 } else { 330 status->bw = RATE_INFO_BW_40; 331 } 332 break; 333 case IEEE80211_STA_RX_BW_80: 334 status->bw = RATE_INFO_BW_80; 335 break; 336 case IEEE80211_STA_RX_BW_160: 337 status->bw = RATE_INFO_BW_160; 338 break; 339 default: 340 return -EINVAL; 341 } 342 343 status->enc_flags |= RX_ENC_FLAG_STBC_MASK * stbc; 344 if (*mode < MT_PHY_TYPE_HE_SU && gi) 345 status->enc_flags |= RX_ENC_FLAG_SHORT_GI; 346 347 return 0; 348 } 349 350 static int 351 mt7925_mac_fill_rx(struct mt792x_dev *dev, struct sk_buff *skb) 352 { 353 u32 csum_mask = MT_RXD0_NORMAL_IP_SUM | MT_RXD0_NORMAL_UDP_TCP_SUM; 354 struct mt76_rx_status *status = (struct mt76_rx_status *)skb->cb; 355 bool hdr_trans, unicast, insert_ccmp_hdr = false; 356 u8 chfreq, qos_ctl = 0, remove_pad, amsdu_info; 357 u16 hdr_gap; 358 __le32 *rxv = NULL, *rxd = (__le32 *)skb->data; 359 struct mt76_phy *mphy = &dev->mt76.phy; 360 struct mt792x_phy *phy = &dev->phy; 361 struct ieee80211_supported_band *sband; 362 u32 csum_status = *(u32 *)skb->cb; 363 u32 rxd0 = le32_to_cpu(rxd[0]); 364 u32 rxd1 = le32_to_cpu(rxd[1]); 365 u32 rxd2 = le32_to_cpu(rxd[2]); 366 u32 rxd3 = le32_to_cpu(rxd[3]); 367 u32 rxd4 = le32_to_cpu(rxd[4]); 368 struct mt792x_sta *msta = NULL; 369 u8 mode = 0; /* , band_idx; */ 370 u16 seq_ctrl = 0; 371 __le16 fc = 0; 372 int idx; 373 374 memset(status, 0, sizeof(*status)); 375 376 if (!test_bit(MT76_STATE_RUNNING, &mphy->state)) 377 return -EINVAL; 378 379 if (rxd2 & MT_RXD2_NORMAL_AMSDU_ERR) 380 return -EINVAL; 381 382 hdr_trans = rxd2 & MT_RXD2_NORMAL_HDR_TRANS; 383 if (hdr_trans && (rxd1 & MT_RXD1_NORMAL_CM)) 384 return -EINVAL; 385 386 /* ICV error or CCMP/BIP/WPI MIC error */ 387 if (rxd1 & MT_RXD1_NORMAL_ICV_ERR) 388 status->flag |= RX_FLAG_ONLY_MONITOR; 389 390 chfreq = FIELD_GET(MT_RXD3_NORMAL_CH_FREQ, rxd3); 391 unicast = FIELD_GET(MT_RXD3_NORMAL_ADDR_TYPE, rxd3) == MT_RXD3_NORMAL_U2M; 392 idx = FIELD_GET(MT_RXD1_NORMAL_WLAN_IDX, rxd1); 393 status->wcid = mt792x_rx_get_wcid(dev, idx, unicast); 394 395 if (status->wcid) { 396 msta = container_of(status->wcid, struct mt792x_sta, wcid); 397 spin_lock_bh(&dev->mt76.sta_poll_lock); 398 if (list_empty(&msta->wcid.poll_list)) 399 list_add_tail(&msta->wcid.poll_list, 400 &dev->mt76.sta_poll_list); 401 spin_unlock_bh(&dev->mt76.sta_poll_lock); 402 } 403 404 mt792x_get_status_freq_info(status, chfreq); 405 406 switch (status->band) { 407 case NL80211_BAND_5GHZ: 408 sband = &mphy->sband_5g.sband; 409 break; 410 case NL80211_BAND_6GHZ: 411 sband = &mphy->sband_6g.sband; 412 break; 413 default: 414 sband = &mphy->sband_2g.sband; 415 break; 416 } 417 418 if (!sband->channels) 419 return -EINVAL; 420 421 if (mt76_is_mmio(&dev->mt76) && (rxd0 & csum_mask) == csum_mask && 422 !(csum_status & (BIT(0) | BIT(2) | BIT(3)))) 423 skb->ip_summed = CHECKSUM_UNNECESSARY; 424 425 if (rxd3 & MT_RXD3_NORMAL_FCS_ERR) 426 status->flag |= RX_FLAG_FAILED_FCS_CRC; 427 428 if (rxd1 & MT_RXD1_NORMAL_TKIP_MIC_ERR) 429 status->flag |= RX_FLAG_MMIC_ERROR; 430 431 if (FIELD_GET(MT_RXD2_NORMAL_SEC_MODE, rxd2) != 0 && 432 !(rxd1 & (MT_RXD1_NORMAL_CLM | MT_RXD1_NORMAL_CM))) { 433 status->flag |= RX_FLAG_DECRYPTED; 434 status->flag |= RX_FLAG_IV_STRIPPED; 435 status->flag |= RX_FLAG_MMIC_STRIPPED | RX_FLAG_MIC_STRIPPED; 436 } 437 438 remove_pad = FIELD_GET(MT_RXD2_NORMAL_HDR_OFFSET, rxd2); 439 440 if (rxd2 & MT_RXD2_NORMAL_MAX_LEN_ERROR) 441 return -EINVAL; 442 443 rxd += 8; 444 if (rxd1 & MT_RXD1_NORMAL_GROUP_4) { 445 u32 v0 = le32_to_cpu(rxd[0]); 446 u32 v2 = le32_to_cpu(rxd[2]); 447 448 /* TODO: need to map rxd address */ 449 fc = cpu_to_le16(FIELD_GET(MT_RXD8_FRAME_CONTROL, v0)); 450 seq_ctrl = FIELD_GET(MT_RXD10_SEQ_CTRL, v2); 451 qos_ctl = FIELD_GET(MT_RXD10_QOS_CTL, v2); 452 453 rxd += 4; 454 if ((u8 *)rxd - skb->data >= skb->len) 455 return -EINVAL; 456 } 457 458 if (rxd1 & MT_RXD1_NORMAL_GROUP_1) { 459 u8 *data = (u8 *)rxd; 460 461 if (status->flag & RX_FLAG_DECRYPTED) { 462 switch (FIELD_GET(MT_RXD2_NORMAL_SEC_MODE, rxd2)) { 463 case MT_CIPHER_AES_CCMP: 464 case MT_CIPHER_CCMP_CCX: 465 case MT_CIPHER_CCMP_256: 466 insert_ccmp_hdr = 467 FIELD_GET(MT_RXD2_NORMAL_FRAG, rxd2); 468 fallthrough; 469 case MT_CIPHER_TKIP: 470 case MT_CIPHER_TKIP_NO_MIC: 471 case MT_CIPHER_GCMP: 472 case MT_CIPHER_GCMP_256: 473 status->iv[0] = data[5]; 474 status->iv[1] = data[4]; 475 status->iv[2] = data[3]; 476 status->iv[3] = data[2]; 477 status->iv[4] = data[1]; 478 status->iv[5] = data[0]; 479 break; 480 default: 481 break; 482 } 483 } 484 rxd += 4; 485 if ((u8 *)rxd - skb->data >= skb->len) 486 return -EINVAL; 487 } 488 489 if (rxd1 & MT_RXD1_NORMAL_GROUP_2) { 490 status->timestamp = le32_to_cpu(rxd[0]); 491 status->flag |= RX_FLAG_MACTIME_START; 492 493 if (!(rxd2 & MT_RXD2_NORMAL_NON_AMPDU)) { 494 status->flag |= RX_FLAG_AMPDU_DETAILS; 495 496 /* all subframes of an A-MPDU have the same timestamp */ 497 if (phy->rx_ampdu_ts != status->timestamp) { 498 if (!++phy->ampdu_ref) 499 phy->ampdu_ref++; 500 } 501 phy->rx_ampdu_ts = status->timestamp; 502 503 status->ampdu_ref = phy->ampdu_ref; 504 } 505 506 rxd += 4; 507 if ((u8 *)rxd - skb->data >= skb->len) 508 return -EINVAL; 509 } 510 511 /* RXD Group 3 - P-RXV */ 512 if (rxd1 & MT_RXD1_NORMAL_GROUP_3) { 513 u32 v3; 514 int ret; 515 516 rxv = rxd; 517 rxd += 4; 518 if ((u8 *)rxd - skb->data >= skb->len) 519 return -EINVAL; 520 521 v3 = le32_to_cpu(rxv[3]); 522 523 status->chains = mphy->antenna_mask; 524 status->chain_signal[0] = to_rssi(MT_PRXV_RCPI0, v3); 525 status->chain_signal[1] = to_rssi(MT_PRXV_RCPI1, v3); 526 status->chain_signal[2] = to_rssi(MT_PRXV_RCPI2, v3); 527 status->chain_signal[3] = to_rssi(MT_PRXV_RCPI3, v3); 528 529 /* RXD Group 5 - C-RXV */ 530 if (rxd1 & MT_RXD1_NORMAL_GROUP_5) { 531 rxd += 24; 532 if ((u8 *)rxd - skb->data >= skb->len) 533 return -EINVAL; 534 } 535 536 ret = mt7925_mac_fill_rx_rate(dev, status, sband, rxv, &mode); 537 if (ret < 0) 538 return ret; 539 } 540 541 amsdu_info = FIELD_GET(MT_RXD4_NORMAL_PAYLOAD_FORMAT, rxd4); 542 status->amsdu = !!amsdu_info; 543 if (status->amsdu) { 544 status->first_amsdu = amsdu_info == MT_RXD4_FIRST_AMSDU_FRAME; 545 status->last_amsdu = amsdu_info == MT_RXD4_LAST_AMSDU_FRAME; 546 } 547 548 hdr_gap = (u8 *)rxd - skb->data + 2 * remove_pad; 549 if (hdr_trans && ieee80211_has_morefrags(fc)) { 550 if (mt7925_reverse_frag0_hdr_trans(skb, hdr_gap)) 551 return -EINVAL; 552 hdr_trans = false; 553 } else { 554 int pad_start = 0; 555 556 skb_pull(skb, hdr_gap); 557 if (!hdr_trans && status->amsdu) { 558 pad_start = ieee80211_get_hdrlen_from_skb(skb); 559 } else if (hdr_trans && (rxd2 & MT_RXD2_NORMAL_HDR_TRANS_ERROR)) { 560 /* When header translation failure is indicated, 561 * the hardware will insert an extra 2-byte field 562 * containing the data length after the protocol 563 * type field. 564 */ 565 pad_start = 12; 566 if (get_unaligned_be16(skb->data + pad_start) == ETH_P_8021Q) 567 pad_start += 4; 568 else 569 pad_start = 0; 570 } 571 572 if (pad_start) { 573 memmove(skb->data + 2, skb->data, pad_start); 574 skb_pull(skb, 2); 575 } 576 } 577 578 if (!hdr_trans) { 579 struct ieee80211_hdr *hdr; 580 581 if (insert_ccmp_hdr) { 582 u8 key_id = FIELD_GET(MT_RXD1_NORMAL_KEY_ID, rxd1); 583 584 mt76_insert_ccmp_hdr(skb, key_id); 585 } 586 587 hdr = mt76_skb_get_hdr(skb); 588 fc = hdr->frame_control; 589 if (ieee80211_is_data_qos(fc)) { 590 seq_ctrl = le16_to_cpu(hdr->seq_ctrl); 591 qos_ctl = *ieee80211_get_qos_ctl(hdr); 592 } 593 } else { 594 status->flag |= RX_FLAG_8023; 595 } 596 597 mt792x_mac_assoc_rssi(dev, skb); 598 599 if (rxv && mode >= MT_PHY_TYPE_HE_SU && !(status->flag & RX_FLAG_8023)) 600 mt76_connac3_mac_decode_he_radiotap(skb, rxv, mode); 601 602 if (!status->wcid || !ieee80211_is_data_qos(fc)) 603 return 0; 604 605 status->aggr = unicast && !ieee80211_is_qos_nullfunc(fc); 606 status->seqno = IEEE80211_SEQ_TO_SN(seq_ctrl); 607 status->qos_ctl = qos_ctl; 608 609 return 0; 610 } 611 612 static void 613 mt7925_mac_write_txwi_8023(__le32 *txwi, struct sk_buff *skb, 614 struct mt76_wcid *wcid) 615 { 616 u8 tid = skb->priority & IEEE80211_QOS_CTL_TID_MASK; 617 u8 fc_type, fc_stype; 618 u16 ethertype; 619 bool wmm = false; 620 u32 val; 621 622 if (wcid->sta) { 623 struct ieee80211_sta *sta; 624 625 sta = container_of((void *)wcid, struct ieee80211_sta, drv_priv); 626 wmm = sta->wme; 627 } 628 629 val = FIELD_PREP(MT_TXD1_HDR_FORMAT, MT_HDR_FORMAT_802_3) | 630 FIELD_PREP(MT_TXD1_TID, tid); 631 632 ethertype = get_unaligned_be16(&skb->data[12]); 633 if (ethertype >= ETH_P_802_3_MIN) 634 val |= MT_TXD1_ETH_802_3; 635 636 txwi[1] |= cpu_to_le32(val); 637 638 fc_type = IEEE80211_FTYPE_DATA >> 2; 639 fc_stype = wmm ? IEEE80211_STYPE_QOS_DATA >> 4 : 0; 640 641 val = FIELD_PREP(MT_TXD2_FRAME_TYPE, fc_type) | 642 FIELD_PREP(MT_TXD2_SUB_TYPE, fc_stype); 643 644 txwi[2] |= cpu_to_le32(val); 645 } 646 647 static void 648 mt7925_mac_write_txwi_80211(struct mt76_dev *dev, __le32 *txwi, 649 struct sk_buff *skb, 650 struct ieee80211_key_conf *key) 651 { 652 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; 653 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data; 654 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 655 bool multicast = is_multicast_ether_addr(hdr->addr1); 656 u8 tid = skb->priority & IEEE80211_QOS_CTL_TID_MASK; 657 __le16 fc = hdr->frame_control; 658 u8 fc_type, fc_stype; 659 u32 val; 660 661 if (ieee80211_is_action(fc) && 662 mgmt->u.action.category == WLAN_CATEGORY_BACK && 663 mgmt->u.action.u.addba_req.action_code == WLAN_ACTION_ADDBA_REQ) 664 tid = MT_TX_ADDBA; 665 else if (ieee80211_is_mgmt(hdr->frame_control)) 666 tid = MT_TX_NORMAL; 667 668 val = FIELD_PREP(MT_TXD1_HDR_FORMAT, MT_HDR_FORMAT_802_11) | 669 FIELD_PREP(MT_TXD1_HDR_INFO, 670 ieee80211_get_hdrlen_from_skb(skb) / 2) | 671 FIELD_PREP(MT_TXD1_TID, tid); 672 673 if (!ieee80211_is_data(fc) || multicast || 674 info->flags & IEEE80211_TX_CTL_USE_MINRATE) 675 val |= MT_TXD1_FIXED_RATE; 676 677 if (key && multicast && ieee80211_is_robust_mgmt_frame(skb) && 678 key->cipher == WLAN_CIPHER_SUITE_AES_CMAC) { 679 val |= MT_TXD1_BIP; 680 txwi[3] &= ~cpu_to_le32(MT_TXD3_PROTECT_FRAME); 681 } 682 683 txwi[1] |= cpu_to_le32(val); 684 685 fc_type = (le16_to_cpu(fc) & IEEE80211_FCTL_FTYPE) >> 2; 686 fc_stype = (le16_to_cpu(fc) & IEEE80211_FCTL_STYPE) >> 4; 687 688 val = FIELD_PREP(MT_TXD2_FRAME_TYPE, fc_type) | 689 FIELD_PREP(MT_TXD2_SUB_TYPE, fc_stype); 690 691 txwi[2] |= cpu_to_le32(val); 692 693 txwi[3] |= cpu_to_le32(FIELD_PREP(MT_TXD3_BCM, multicast)); 694 if (ieee80211_is_beacon(fc)) 695 txwi[3] |= cpu_to_le32(MT_TXD3_REM_TX_COUNT); 696 697 if (info->flags & IEEE80211_TX_CTL_INJECTED) { 698 u16 seqno = le16_to_cpu(hdr->seq_ctrl); 699 700 if (ieee80211_is_back_req(hdr->frame_control)) { 701 struct ieee80211_bar *bar; 702 703 bar = (struct ieee80211_bar *)skb->data; 704 seqno = le16_to_cpu(bar->start_seq_num); 705 } 706 707 val = MT_TXD3_SN_VALID | 708 FIELD_PREP(MT_TXD3_SEQ, IEEE80211_SEQ_TO_SN(seqno)); 709 txwi[3] |= cpu_to_le32(val); 710 txwi[3] &= ~cpu_to_le32(MT_TXD3_HW_AMSDU); 711 } 712 } 713 714 void 715 mt7925_mac_write_txwi(struct mt76_dev *dev, __le32 *txwi, 716 struct sk_buff *skb, struct mt76_wcid *wcid, 717 struct ieee80211_key_conf *key, int pid, 718 enum mt76_txq_id qid, u32 changed) 719 { 720 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 721 struct ieee80211_vif *vif = info->control.vif; 722 u8 p_fmt, q_idx, omac_idx = 0, wmm_idx = 0, band_idx = 0; 723 u32 val, sz_txd = mt76_is_mmio(dev) ? MT_TXD_SIZE : MT_SDIO_TXD_SIZE; 724 bool is_8023 = info->flags & IEEE80211_TX_CTL_HW_80211_ENCAP; 725 struct mt76_vif *mvif; 726 bool beacon = !!(changed & (BSS_CHANGED_BEACON | 727 BSS_CHANGED_BEACON_ENABLED)); 728 bool inband_disc = !!(changed & (BSS_CHANGED_UNSOL_BCAST_PROBE_RESP | 729 BSS_CHANGED_FILS_DISCOVERY)); 730 731 mvif = vif ? (struct mt76_vif *)vif->drv_priv : NULL; 732 if (mvif) { 733 omac_idx = mvif->omac_idx; 734 wmm_idx = mvif->wmm_idx; 735 band_idx = mvif->band_idx; 736 } 737 738 if (inband_disc) { 739 p_fmt = MT_TX_TYPE_FW; 740 q_idx = MT_LMAC_ALTX0; 741 } else if (beacon) { 742 p_fmt = MT_TX_TYPE_FW; 743 q_idx = MT_LMAC_BCN0; 744 } else if (qid >= MT_TXQ_PSD) { 745 p_fmt = mt76_is_mmio(dev) ? MT_TX_TYPE_CT : MT_TX_TYPE_SF; 746 q_idx = MT_LMAC_ALTX0; 747 } else { 748 p_fmt = mt76_is_mmio(dev) ? MT_TX_TYPE_CT : MT_TX_TYPE_SF; 749 q_idx = wmm_idx * MT76_CONNAC_MAX_WMM_SETS + 750 mt76_connac_lmac_mapping(skb_get_queue_mapping(skb)); 751 752 /* counting non-offloading skbs */ 753 wcid->stats.tx_bytes += skb->len; 754 wcid->stats.tx_packets++; 755 } 756 757 val = FIELD_PREP(MT_TXD0_TX_BYTES, skb->len + sz_txd) | 758 FIELD_PREP(MT_TXD0_PKT_FMT, p_fmt) | 759 FIELD_PREP(MT_TXD0_Q_IDX, q_idx); 760 txwi[0] = cpu_to_le32(val); 761 762 val = FIELD_PREP(MT_TXD1_WLAN_IDX, wcid->idx) | 763 FIELD_PREP(MT_TXD1_OWN_MAC, omac_idx); 764 765 if (band_idx) 766 val |= FIELD_PREP(MT_TXD1_TGID, band_idx); 767 768 txwi[1] = cpu_to_le32(val); 769 txwi[2] = 0; 770 771 val = FIELD_PREP(MT_TXD3_REM_TX_COUNT, 15); 772 773 if (key) 774 val |= MT_TXD3_PROTECT_FRAME; 775 if (info->flags & IEEE80211_TX_CTL_NO_ACK) 776 val |= MT_TXD3_NO_ACK; 777 if (wcid->amsdu) 778 val |= MT_TXD3_HW_AMSDU; 779 780 txwi[3] = cpu_to_le32(val); 781 txwi[4] = 0; 782 783 val = FIELD_PREP(MT_TXD5_PID, pid); 784 if (pid >= MT_PACKET_ID_FIRST) { 785 val |= MT_TXD5_TX_STATUS_HOST; 786 txwi[3] |= cpu_to_le32(MT_TXD3_BA_DISABLE); 787 txwi[3] &= ~cpu_to_le32(MT_TXD3_HW_AMSDU); 788 } 789 790 txwi[5] = cpu_to_le32(val); 791 792 val = MT_TXD6_DIS_MAT | MT_TXD6_DAS | 793 FIELD_PREP(MT_TXD6_MSDU_CNT, 1); 794 txwi[6] = cpu_to_le32(val); 795 txwi[7] = 0; 796 797 if (is_8023) 798 mt7925_mac_write_txwi_8023(txwi, skb, wcid); 799 else 800 mt7925_mac_write_txwi_80211(dev, txwi, skb, key); 801 802 if (txwi[1] & cpu_to_le32(MT_TXD1_FIXED_RATE)) { 803 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; 804 bool mcast = ieee80211_is_data(hdr->frame_control) && 805 is_multicast_ether_addr(hdr->addr1); 806 u8 idx = MT792x_BASIC_RATES_TBL; 807 808 if (mvif) { 809 if (mcast && mvif->mcast_rates_idx) 810 idx = mvif->mcast_rates_idx; 811 else if (beacon && mvif->beacon_rates_idx) 812 idx = mvif->beacon_rates_idx; 813 else 814 idx = mvif->basic_rates_idx; 815 } 816 817 txwi[6] |= cpu_to_le32(FIELD_PREP(MT_TXD6_TX_RATE, idx)); 818 txwi[3] |= cpu_to_le32(MT_TXD3_BA_DISABLE); 819 } 820 } 821 EXPORT_SYMBOL_GPL(mt7925_mac_write_txwi); 822 823 static void mt7925_tx_check_aggr(struct ieee80211_sta *sta, __le32 *txwi) 824 { 825 struct mt792x_sta *msta; 826 u16 fc, tid; 827 u32 val; 828 829 if (!sta || !(sta->deflink.ht_cap.ht_supported || sta->deflink.he_cap.has_he)) 830 return; 831 832 tid = le32_get_bits(txwi[1], MT_TXD1_TID); 833 if (tid >= 6) /* skip VO queue */ 834 return; 835 836 val = le32_to_cpu(txwi[2]); 837 fc = FIELD_GET(MT_TXD2_FRAME_TYPE, val) << 2 | 838 FIELD_GET(MT_TXD2_SUB_TYPE, val) << 4; 839 if (unlikely(fc != (IEEE80211_FTYPE_DATA | IEEE80211_STYPE_QOS_DATA))) 840 return; 841 842 msta = (struct mt792x_sta *)sta->drv_priv; 843 if (!test_and_set_bit(tid, &msta->wcid.ampdu_state)) 844 ieee80211_start_tx_ba_session(sta, tid, 0); 845 } 846 847 static bool 848 mt7925_mac_add_txs_skb(struct mt792x_dev *dev, struct mt76_wcid *wcid, 849 int pid, __le32 *txs_data) 850 { 851 struct mt76_sta_stats *stats = &wcid->stats; 852 struct ieee80211_supported_band *sband; 853 struct mt76_dev *mdev = &dev->mt76; 854 struct mt76_phy *mphy; 855 struct ieee80211_tx_info *info; 856 struct sk_buff_head list; 857 struct rate_info rate = {}; 858 struct sk_buff *skb; 859 bool cck = false; 860 u32 txrate, txs, mode, stbc; 861 862 mt76_tx_status_lock(mdev, &list); 863 skb = mt76_tx_status_skb_get(mdev, wcid, pid, &list); 864 if (!skb) 865 goto out_no_skb; 866 867 txs = le32_to_cpu(txs_data[0]); 868 869 info = IEEE80211_SKB_CB(skb); 870 if (!(txs & MT_TXS0_ACK_ERROR_MASK)) 871 info->flags |= IEEE80211_TX_STAT_ACK; 872 873 info->status.ampdu_len = 1; 874 info->status.ampdu_ack_len = !!(info->flags & 875 IEEE80211_TX_STAT_ACK); 876 877 info->status.rates[0].idx = -1; 878 879 txrate = FIELD_GET(MT_TXS0_TX_RATE, txs); 880 881 rate.mcs = FIELD_GET(MT_TX_RATE_IDX, txrate); 882 rate.nss = FIELD_GET(MT_TX_RATE_NSS, txrate) + 1; 883 stbc = le32_get_bits(txs_data[3], MT_TXS3_RATE_STBC); 884 885 if (stbc && rate.nss > 1) 886 rate.nss >>= 1; 887 888 if (rate.nss - 1 < ARRAY_SIZE(stats->tx_nss)) 889 stats->tx_nss[rate.nss - 1]++; 890 if (rate.mcs < ARRAY_SIZE(stats->tx_mcs)) 891 stats->tx_mcs[rate.mcs]++; 892 893 mode = FIELD_GET(MT_TX_RATE_MODE, txrate); 894 switch (mode) { 895 case MT_PHY_TYPE_CCK: 896 cck = true; 897 fallthrough; 898 case MT_PHY_TYPE_OFDM: 899 mphy = mt76_dev_phy(mdev, wcid->phy_idx); 900 901 if (mphy->chandef.chan->band == NL80211_BAND_5GHZ) 902 sband = &mphy->sband_5g.sband; 903 else if (mphy->chandef.chan->band == NL80211_BAND_6GHZ) 904 sband = &mphy->sband_6g.sband; 905 else 906 sband = &mphy->sband_2g.sband; 907 908 rate.mcs = mt76_get_rate(mphy->dev, sband, rate.mcs, cck); 909 rate.legacy = sband->bitrates[rate.mcs].bitrate; 910 break; 911 case MT_PHY_TYPE_HT: 912 case MT_PHY_TYPE_HT_GF: 913 if (rate.mcs > 31) 914 goto out; 915 916 rate.flags = RATE_INFO_FLAGS_MCS; 917 if (wcid->rate.flags & RATE_INFO_FLAGS_SHORT_GI) 918 rate.flags |= RATE_INFO_FLAGS_SHORT_GI; 919 break; 920 case MT_PHY_TYPE_VHT: 921 if (rate.mcs > 9) 922 goto out; 923 924 rate.flags = RATE_INFO_FLAGS_VHT_MCS; 925 break; 926 case MT_PHY_TYPE_HE_SU: 927 case MT_PHY_TYPE_HE_EXT_SU: 928 case MT_PHY_TYPE_HE_TB: 929 case MT_PHY_TYPE_HE_MU: 930 if (rate.mcs > 11) 931 goto out; 932 933 rate.he_gi = wcid->rate.he_gi; 934 rate.he_dcm = FIELD_GET(MT_TX_RATE_DCM, txrate); 935 rate.flags = RATE_INFO_FLAGS_HE_MCS; 936 break; 937 case MT_PHY_TYPE_EHT_SU: 938 case MT_PHY_TYPE_EHT_TRIG: 939 case MT_PHY_TYPE_EHT_MU: 940 if (rate.mcs > 13) 941 goto out; 942 943 rate.eht_gi = wcid->rate.eht_gi; 944 rate.flags = RATE_INFO_FLAGS_EHT_MCS; 945 break; 946 default: 947 goto out; 948 } 949 950 stats->tx_mode[mode]++; 951 952 switch (FIELD_GET(MT_TXS0_BW, txs)) { 953 case IEEE80211_STA_RX_BW_160: 954 rate.bw = RATE_INFO_BW_160; 955 stats->tx_bw[3]++; 956 break; 957 case IEEE80211_STA_RX_BW_80: 958 rate.bw = RATE_INFO_BW_80; 959 stats->tx_bw[2]++; 960 break; 961 case IEEE80211_STA_RX_BW_40: 962 rate.bw = RATE_INFO_BW_40; 963 stats->tx_bw[1]++; 964 break; 965 default: 966 rate.bw = RATE_INFO_BW_20; 967 stats->tx_bw[0]++; 968 break; 969 } 970 wcid->rate = rate; 971 972 out: 973 mt76_tx_status_skb_done(mdev, skb, &list); 974 975 out_no_skb: 976 mt76_tx_status_unlock(mdev, &list); 977 978 return !!skb; 979 } 980 981 void mt7925_mac_add_txs(struct mt792x_dev *dev, void *data) 982 { 983 struct mt792x_sta *msta = NULL; 984 struct mt76_wcid *wcid; 985 __le32 *txs_data = data; 986 u16 wcidx; 987 u8 pid; 988 989 if (le32_get_bits(txs_data[0], MT_TXS0_TXS_FORMAT) > 1) 990 return; 991 992 wcidx = le32_get_bits(txs_data[2], MT_TXS2_WCID); 993 pid = le32_get_bits(txs_data[3], MT_TXS3_PID); 994 995 if (pid < MT_PACKET_ID_FIRST) 996 return; 997 998 if (wcidx >= MT792x_WTBL_SIZE) 999 return; 1000 1001 rcu_read_lock(); 1002 1003 wcid = rcu_dereference(dev->mt76.wcid[wcidx]); 1004 if (!wcid) 1005 goto out; 1006 1007 msta = container_of(wcid, struct mt792x_sta, wcid); 1008 1009 mt7925_mac_add_txs_skb(dev, wcid, pid, txs_data); 1010 if (!wcid->sta) 1011 goto out; 1012 1013 spin_lock_bh(&dev->mt76.sta_poll_lock); 1014 if (list_empty(&msta->wcid.poll_list)) 1015 list_add_tail(&msta->wcid.poll_list, &dev->mt76.sta_poll_list); 1016 spin_unlock_bh(&dev->mt76.sta_poll_lock); 1017 1018 out: 1019 rcu_read_unlock(); 1020 } 1021 1022 void mt7925_txwi_free(struct mt792x_dev *dev, struct mt76_txwi_cache *t, 1023 struct ieee80211_sta *sta, bool clear_status, 1024 struct list_head *free_list) 1025 { 1026 struct mt76_dev *mdev = &dev->mt76; 1027 __le32 *txwi; 1028 u16 wcid_idx; 1029 1030 mt76_connac_txp_skb_unmap(mdev, t); 1031 if (!t->skb) 1032 goto out; 1033 1034 txwi = (__le32 *)mt76_get_txwi_ptr(mdev, t); 1035 if (sta) { 1036 struct mt76_wcid *wcid = (struct mt76_wcid *)sta->drv_priv; 1037 1038 if (likely(t->skb->protocol != cpu_to_be16(ETH_P_PAE))) 1039 mt7925_tx_check_aggr(sta, txwi); 1040 1041 wcid_idx = wcid->idx; 1042 } else { 1043 wcid_idx = le32_get_bits(txwi[1], MT_TXD1_WLAN_IDX); 1044 } 1045 1046 __mt76_tx_complete_skb(mdev, wcid_idx, t->skb, free_list); 1047 out: 1048 t->skb = NULL; 1049 mt76_put_txwi(mdev, t); 1050 } 1051 EXPORT_SYMBOL_GPL(mt7925_txwi_free); 1052 1053 static void 1054 mt7925_mac_tx_free(struct mt792x_dev *dev, void *data, int len) 1055 { 1056 __le32 *tx_free = (__le32 *)data, *cur_info; 1057 struct mt76_dev *mdev = &dev->mt76; 1058 struct mt76_txwi_cache *txwi; 1059 struct ieee80211_sta *sta = NULL; 1060 struct mt76_wcid *wcid = NULL; 1061 LIST_HEAD(free_list); 1062 struct sk_buff *skb, *tmp; 1063 void *end = data + len; 1064 bool wake = false; 1065 u16 total, count = 0; 1066 1067 /* clean DMA queues and unmap buffers first */ 1068 mt76_queue_tx_cleanup(dev, dev->mphy.q_tx[MT_TXQ_PSD], false); 1069 mt76_queue_tx_cleanup(dev, dev->mphy.q_tx[MT_TXQ_BE], false); 1070 1071 if (WARN_ON_ONCE(le32_get_bits(tx_free[1], MT_TXFREE1_VER) < 4)) 1072 return; 1073 1074 total = le32_get_bits(tx_free[0], MT_TXFREE0_MSDU_CNT); 1075 for (cur_info = &tx_free[2]; count < total; cur_info++) { 1076 u32 msdu, info; 1077 u8 i; 1078 1079 if (WARN_ON_ONCE((void *)cur_info >= end)) 1080 return; 1081 /* 1'b1: new wcid pair. 1082 * 1'b0: msdu_id with the same 'wcid pair' as above. 1083 */ 1084 info = le32_to_cpu(*cur_info); 1085 if (info & MT_TXFREE_INFO_PAIR) { 1086 struct mt792x_sta *msta; 1087 u16 idx; 1088 1089 idx = FIELD_GET(MT_TXFREE_INFO_WLAN_ID, info); 1090 wcid = rcu_dereference(dev->mt76.wcid[idx]); 1091 sta = wcid_to_sta(wcid); 1092 if (!sta) 1093 continue; 1094 1095 msta = container_of(wcid, struct mt792x_sta, wcid); 1096 spin_lock_bh(&mdev->sta_poll_lock); 1097 if (list_empty(&msta->wcid.poll_list)) 1098 list_add_tail(&msta->wcid.poll_list, 1099 &mdev->sta_poll_list); 1100 spin_unlock_bh(&mdev->sta_poll_lock); 1101 continue; 1102 } 1103 1104 if (info & MT_TXFREE_INFO_HEADER) { 1105 if (wcid) { 1106 wcid->stats.tx_retries += 1107 FIELD_GET(MT_TXFREE_INFO_COUNT, info) - 1; 1108 wcid->stats.tx_failed += 1109 !!FIELD_GET(MT_TXFREE_INFO_STAT, info); 1110 } 1111 continue; 1112 } 1113 1114 for (i = 0; i < 2; i++) { 1115 msdu = (info >> (15 * i)) & MT_TXFREE_INFO_MSDU_ID; 1116 if (msdu == MT_TXFREE_INFO_MSDU_ID) 1117 continue; 1118 1119 count++; 1120 txwi = mt76_token_release(mdev, msdu, &wake); 1121 if (!txwi) 1122 continue; 1123 1124 mt7925_txwi_free(dev, txwi, sta, 0, &free_list); 1125 } 1126 } 1127 1128 mt7925_mac_sta_poll(dev); 1129 1130 if (wake) 1131 mt76_set_tx_blocked(&dev->mt76, false); 1132 1133 mt76_worker_schedule(&dev->mt76.tx_worker); 1134 1135 list_for_each_entry_safe(skb, tmp, &free_list, list) { 1136 skb_list_del_init(skb); 1137 napi_consume_skb(skb, 1); 1138 } 1139 } 1140 1141 bool mt7925_rx_check(struct mt76_dev *mdev, void *data, int len) 1142 { 1143 struct mt792x_dev *dev = container_of(mdev, struct mt792x_dev, mt76); 1144 __le32 *rxd = (__le32 *)data; 1145 __le32 *end = (__le32 *)&rxd[len / 4]; 1146 enum rx_pkt_type type; 1147 1148 type = le32_get_bits(rxd[0], MT_RXD0_PKT_TYPE); 1149 if (type != PKT_TYPE_NORMAL) { 1150 u32 sw_type = le32_get_bits(rxd[0], MT_RXD0_SW_PKT_TYPE_MASK); 1151 1152 if (unlikely((sw_type & MT_RXD0_SW_PKT_TYPE_MAP) == 1153 MT_RXD0_SW_PKT_TYPE_FRAME)) 1154 return true; 1155 } 1156 1157 switch (type) { 1158 case PKT_TYPE_TXRX_NOTIFY: 1159 /* PKT_TYPE_TXRX_NOTIFY can be received only by mmio devices */ 1160 mt7925_mac_tx_free(dev, data, len); /* mmio */ 1161 return false; 1162 case PKT_TYPE_TXS: 1163 for (rxd += 4; rxd + 12 <= end; rxd += 12) 1164 mt7925_mac_add_txs(dev, rxd); 1165 return false; 1166 default: 1167 return true; 1168 } 1169 } 1170 EXPORT_SYMBOL_GPL(mt7925_rx_check); 1171 1172 void mt7925_queue_rx_skb(struct mt76_dev *mdev, enum mt76_rxq_id q, 1173 struct sk_buff *skb, u32 *info) 1174 { 1175 struct mt792x_dev *dev = container_of(mdev, struct mt792x_dev, mt76); 1176 __le32 *rxd = (__le32 *)skb->data; 1177 __le32 *end = (__le32 *)&skb->data[skb->len]; 1178 enum rx_pkt_type type; 1179 u16 flag; 1180 1181 type = le32_get_bits(rxd[0], MT_RXD0_PKT_TYPE); 1182 flag = le32_get_bits(rxd[0], MT_RXD0_PKT_FLAG); 1183 if (type != PKT_TYPE_NORMAL) { 1184 u32 sw_type = le32_get_bits(rxd[0], MT_RXD0_SW_PKT_TYPE_MASK); 1185 1186 if (unlikely((sw_type & MT_RXD0_SW_PKT_TYPE_MAP) == 1187 MT_RXD0_SW_PKT_TYPE_FRAME)) 1188 type = PKT_TYPE_NORMAL; 1189 } 1190 1191 if (type == PKT_TYPE_RX_EVENT && flag == 0x1) 1192 type = PKT_TYPE_NORMAL_MCU; 1193 1194 switch (type) { 1195 case PKT_TYPE_TXRX_NOTIFY: 1196 /* PKT_TYPE_TXRX_NOTIFY can be received only by mmio devices */ 1197 mt7925_mac_tx_free(dev, skb->data, skb->len); 1198 napi_consume_skb(skb, 1); 1199 break; 1200 case PKT_TYPE_RX_EVENT: 1201 mt7925_mcu_rx_event(dev, skb); 1202 break; 1203 case PKT_TYPE_TXS: 1204 for (rxd += 2; rxd + 8 <= end; rxd += 8) 1205 mt7925_mac_add_txs(dev, rxd); 1206 dev_kfree_skb(skb); 1207 break; 1208 case PKT_TYPE_NORMAL_MCU: 1209 case PKT_TYPE_NORMAL: 1210 if (!mt7925_mac_fill_rx(dev, skb)) { 1211 mt76_rx(&dev->mt76, q, skb); 1212 return; 1213 } 1214 fallthrough; 1215 default: 1216 dev_kfree_skb(skb); 1217 break; 1218 } 1219 } 1220 EXPORT_SYMBOL_GPL(mt7925_queue_rx_skb); 1221 1222 static void 1223 mt7925_vif_connect_iter(void *priv, u8 *mac, 1224 struct ieee80211_vif *vif) 1225 { 1226 struct mt792x_vif *mvif = (struct mt792x_vif *)vif->drv_priv; 1227 struct mt792x_dev *dev = mvif->phy->dev; 1228 struct ieee80211_hw *hw = mt76_hw(dev); 1229 1230 if (vif->type == NL80211_IFTYPE_STATION) 1231 ieee80211_disconnect(vif, true); 1232 1233 mt76_connac_mcu_uni_add_dev(&dev->mphy, vif, &mvif->sta.wcid, true); 1234 mt7925_mcu_set_tx(dev, vif); 1235 1236 if (vif->type == NL80211_IFTYPE_AP) { 1237 mt76_connac_mcu_uni_add_bss(dev->phy.mt76, vif, &mvif->sta.wcid, 1238 true, NULL); 1239 mt7925_mcu_sta_update(dev, NULL, vif, true, 1240 MT76_STA_INFO_STATE_NONE); 1241 mt7925_mcu_uni_add_beacon_offload(dev, hw, vif, true); 1242 } 1243 } 1244 1245 /* system error recovery */ 1246 void mt7925_mac_reset_work(struct work_struct *work) 1247 { 1248 struct mt792x_dev *dev = container_of(work, struct mt792x_dev, 1249 reset_work); 1250 struct ieee80211_hw *hw = mt76_hw(dev); 1251 struct mt76_connac_pm *pm = &dev->pm; 1252 int i, ret; 1253 1254 dev_dbg(dev->mt76.dev, "chip reset\n"); 1255 dev->hw_full_reset = true; 1256 ieee80211_stop_queues(hw); 1257 1258 cancel_delayed_work_sync(&dev->mphy.mac_work); 1259 cancel_delayed_work_sync(&pm->ps_work); 1260 cancel_work_sync(&pm->wake_work); 1261 1262 for (i = 0; i < 10; i++) { 1263 mutex_lock(&dev->mt76.mutex); 1264 ret = mt792x_dev_reset(dev); 1265 mutex_unlock(&dev->mt76.mutex); 1266 1267 if (!ret) 1268 break; 1269 } 1270 1271 if (i == 10) 1272 dev_err(dev->mt76.dev, "chip reset failed\n"); 1273 1274 if (test_and_clear_bit(MT76_HW_SCANNING, &dev->mphy.state)) { 1275 struct cfg80211_scan_info info = { 1276 .aborted = true, 1277 }; 1278 1279 ieee80211_scan_completed(dev->mphy.hw, &info); 1280 } 1281 1282 dev->hw_full_reset = false; 1283 pm->suspended = false; 1284 ieee80211_wake_queues(hw); 1285 ieee80211_iterate_active_interfaces(hw, 1286 IEEE80211_IFACE_ITER_RESUME_ALL, 1287 mt7925_vif_connect_iter, NULL); 1288 mt76_connac_power_save_sched(&dev->mt76.phy, pm); 1289 } 1290 1291 void mt7925_coredump_work(struct work_struct *work) 1292 { 1293 struct mt792x_dev *dev; 1294 char *dump, *data; 1295 1296 dev = (struct mt792x_dev *)container_of(work, struct mt792x_dev, 1297 coredump.work.work); 1298 1299 if (time_is_after_jiffies(dev->coredump.last_activity + 1300 4 * MT76_CONNAC_COREDUMP_TIMEOUT)) { 1301 queue_delayed_work(dev->mt76.wq, &dev->coredump.work, 1302 MT76_CONNAC_COREDUMP_TIMEOUT); 1303 return; 1304 } 1305 1306 dump = vzalloc(MT76_CONNAC_COREDUMP_SZ); 1307 data = dump; 1308 1309 while (true) { 1310 struct sk_buff *skb; 1311 1312 spin_lock_bh(&dev->mt76.lock); 1313 skb = __skb_dequeue(&dev->coredump.msg_list); 1314 spin_unlock_bh(&dev->mt76.lock); 1315 1316 if (!skb) 1317 break; 1318 1319 skb_pull(skb, sizeof(struct mt7925_mcu_rxd) + 8); 1320 if (!dump || data + skb->len - dump > MT76_CONNAC_COREDUMP_SZ) { 1321 dev_kfree_skb(skb); 1322 continue; 1323 } 1324 1325 memcpy(data, skb->data, skb->len); 1326 data += skb->len; 1327 1328 dev_kfree_skb(skb); 1329 } 1330 1331 if (dump) 1332 dev_coredumpv(dev->mt76.dev, dump, MT76_CONNAC_COREDUMP_SZ, 1333 GFP_KERNEL); 1334 1335 mt792x_reset(&dev->mt76); 1336 } 1337 1338 /* usb_sdio */ 1339 static void 1340 mt7925_usb_sdio_write_txwi(struct mt792x_dev *dev, struct mt76_wcid *wcid, 1341 enum mt76_txq_id qid, struct ieee80211_sta *sta, 1342 struct ieee80211_key_conf *key, int pid, 1343 struct sk_buff *skb) 1344 { 1345 __le32 *txwi = (__le32 *)(skb->data - MT_SDIO_TXD_SIZE); 1346 1347 memset(txwi, 0, MT_SDIO_TXD_SIZE); 1348 mt7925_mac_write_txwi(&dev->mt76, txwi, skb, wcid, key, pid, qid, 0); 1349 skb_push(skb, MT_SDIO_TXD_SIZE); 1350 } 1351 1352 int mt7925_usb_sdio_tx_prepare_skb(struct mt76_dev *mdev, void *txwi_ptr, 1353 enum mt76_txq_id qid, struct mt76_wcid *wcid, 1354 struct ieee80211_sta *sta, 1355 struct mt76_tx_info *tx_info) 1356 { 1357 struct mt792x_dev *dev = container_of(mdev, struct mt792x_dev, mt76); 1358 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_info->skb); 1359 struct ieee80211_key_conf *key = info->control.hw_key; 1360 struct sk_buff *skb = tx_info->skb; 1361 int err, pad, pktid; 1362 1363 if (unlikely(tx_info->skb->len <= ETH_HLEN)) 1364 return -EINVAL; 1365 1366 if (!wcid) 1367 wcid = &dev->mt76.global_wcid; 1368 1369 if (sta) { 1370 struct mt792x_sta *msta = (struct mt792x_sta *)sta->drv_priv; 1371 1372 if (time_after(jiffies, msta->last_txs + HZ / 4)) { 1373 info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS; 1374 msta->last_txs = jiffies; 1375 } 1376 } 1377 1378 pktid = mt76_tx_status_skb_add(&dev->mt76, wcid, skb); 1379 mt7925_usb_sdio_write_txwi(dev, wcid, qid, sta, key, pktid, skb); 1380 1381 mt792x_skb_add_usb_sdio_hdr(dev, skb, 0); 1382 pad = round_up(skb->len, 4) - skb->len; 1383 if (mt76_is_usb(mdev)) 1384 pad += 4; 1385 1386 err = mt76_skb_adjust_pad(skb, pad); 1387 if (err) 1388 /* Release pktid in case of error. */ 1389 idr_remove(&wcid->pktid, pktid); 1390 1391 return err; 1392 } 1393 EXPORT_SYMBOL_GPL(mt7925_usb_sdio_tx_prepare_skb); 1394 1395 void mt7925_usb_sdio_tx_complete_skb(struct mt76_dev *mdev, 1396 struct mt76_queue_entry *e) 1397 { 1398 __le32 *txwi = (__le32 *)(e->skb->data + MT_SDIO_HDR_SIZE); 1399 unsigned int headroom = MT_SDIO_TXD_SIZE + MT_SDIO_HDR_SIZE; 1400 struct ieee80211_sta *sta; 1401 struct mt76_wcid *wcid; 1402 u16 idx; 1403 1404 idx = le32_get_bits(txwi[1], MT_TXD1_WLAN_IDX); 1405 wcid = rcu_dereference(mdev->wcid[idx]); 1406 sta = wcid_to_sta(wcid); 1407 1408 if (sta && likely(e->skb->protocol != cpu_to_be16(ETH_P_PAE))) 1409 mt7925_tx_check_aggr(sta, txwi); 1410 1411 skb_pull(e->skb, headroom); 1412 mt76_tx_complete_skb(mdev, e->wcid, e->skb); 1413 } 1414 EXPORT_SYMBOL_GPL(mt7925_usb_sdio_tx_complete_skb); 1415 1416 bool mt7925_usb_sdio_tx_status_data(struct mt76_dev *mdev, u8 *update) 1417 { 1418 struct mt792x_dev *dev = container_of(mdev, struct mt792x_dev, mt76); 1419 1420 mt792x_mutex_acquire(dev); 1421 mt7925_mac_sta_poll(dev); 1422 mt792x_mutex_release(dev); 1423 1424 return false; 1425 } 1426 EXPORT_SYMBOL_GPL(mt7925_usb_sdio_tx_status_data); 1427 1428 #if IS_ENABLED(CONFIG_IPV6) 1429 void mt7925_set_ipv6_ns_work(struct work_struct *work) 1430 { 1431 struct mt792x_dev *dev = container_of(work, struct mt792x_dev, 1432 ipv6_ns_work); 1433 struct sk_buff *skb; 1434 int ret = 0; 1435 1436 do { 1437 skb = skb_dequeue(&dev->ipv6_ns_list); 1438 1439 if (!skb) 1440 break; 1441 1442 mt792x_mutex_acquire(dev); 1443 ret = mt76_mcu_skb_send_msg(&dev->mt76, skb, 1444 MCU_UNI_CMD(OFFLOAD), true); 1445 mt792x_mutex_release(dev); 1446 1447 } while (!ret); 1448 1449 if (ret) 1450 skb_queue_purge(&dev->ipv6_ns_list); 1451 } 1452 #endif 1453