1 // SPDX-License-Identifier: BSD-3-Clause-Clear 2 /* Copyright (C) 2020 MediaTek Inc. */ 3 4 #include <linux/devcoredump.h> 5 #include <linux/etherdevice.h> 6 #include <linux/timekeeping.h> 7 #include "mt7921.h" 8 #include "../dma.h" 9 #include "../mt76_connac2_mac.h" 10 #include "regd.h" 11 #include "mcu.h" 12 13 #define MT_WTBL_TXRX_CAP_RATE_OFFSET 7 14 #define MT_WTBL_TXRX_RATE_G2_HE 24 15 #define MT_WTBL_TXRX_RATE_G2 12 16 17 #define MT_WTBL_AC0_CTT_OFFSET 20 18 19 bool mt7921_mac_wtbl_update(struct mt792x_dev *dev, int idx, u32 mask) 20 { 21 mt76_rmw(dev, MT_WTBL_UPDATE, MT_WTBL_UPDATE_WLAN_IDX, 22 FIELD_PREP(MT_WTBL_UPDATE_WLAN_IDX, idx) | mask); 23 24 return mt76_poll(dev, MT_WTBL_UPDATE, MT_WTBL_UPDATE_BUSY, 25 0, 5000); 26 } 27 28 static u32 mt7921_mac_wtbl_lmac_addr(int idx, u8 offset) 29 { 30 return MT_WTBL_LMAC_OFFS(idx, 0) + offset * 4; 31 } 32 33 static void mt7921_mac_sta_poll(struct mt792x_dev *dev) 34 { 35 static const u8 ac_to_tid[] = { 36 [IEEE80211_AC_BE] = 0, 37 [IEEE80211_AC_BK] = 1, 38 [IEEE80211_AC_VI] = 4, 39 [IEEE80211_AC_VO] = 6 40 }; 41 struct ieee80211_sta *sta; 42 struct mt792x_sta *msta; 43 struct mt792x_link_sta *mlink; 44 u32 tx_time[IEEE80211_NUM_ACS], rx_time[IEEE80211_NUM_ACS]; 45 LIST_HEAD(sta_poll_list); 46 struct rate_info *rate; 47 s8 rssi[4]; 48 int i; 49 50 spin_lock_bh(&dev->mt76.sta_poll_lock); 51 list_splice_init(&dev->mt76.sta_poll_list, &sta_poll_list); 52 spin_unlock_bh(&dev->mt76.sta_poll_lock); 53 54 while (true) { 55 bool clear = false; 56 u32 addr, val; 57 u16 idx; 58 u8 bw; 59 60 spin_lock_bh(&dev->mt76.sta_poll_lock); 61 if (list_empty(&sta_poll_list)) { 62 spin_unlock_bh(&dev->mt76.sta_poll_lock); 63 break; 64 } 65 mlink = list_first_entry(&sta_poll_list, 66 struct mt792x_link_sta, 67 wcid.poll_list); 68 msta = container_of(mlink, struct mt792x_sta, deflink); 69 list_del_init(&mlink->wcid.poll_list); 70 spin_unlock_bh(&dev->mt76.sta_poll_lock); 71 72 idx = mlink->wcid.idx; 73 addr = mt7921_mac_wtbl_lmac_addr(idx, MT_WTBL_AC0_CTT_OFFSET); 74 75 for (i = 0; i < IEEE80211_NUM_ACS; i++) { 76 u32 tx_last = mlink->airtime_ac[i]; 77 u32 rx_last = mlink->airtime_ac[i + 4]; 78 79 mlink->airtime_ac[i] = mt76_rr(dev, addr); 80 mlink->airtime_ac[i + 4] = mt76_rr(dev, addr + 4); 81 82 tx_time[i] = mlink->airtime_ac[i] - tx_last; 83 rx_time[i] = mlink->airtime_ac[i + 4] - rx_last; 84 85 if ((tx_last | rx_last) & BIT(30)) 86 clear = true; 87 88 addr += 8; 89 } 90 91 if (clear) { 92 mt7921_mac_wtbl_update(dev, idx, 93 MT_WTBL_UPDATE_ADM_COUNT_CLEAR); 94 memset(mlink->airtime_ac, 0, sizeof(mlink->airtime_ac)); 95 } 96 97 if (!mlink->wcid.sta) 98 continue; 99 100 sta = container_of((void *)msta, struct ieee80211_sta, 101 drv_priv); 102 for (i = 0; i < IEEE80211_NUM_ACS; i++) { 103 u8 q = mt76_connac_lmac_mapping(i); 104 u32 tx_cur = tx_time[q]; 105 u32 rx_cur = rx_time[q]; 106 u8 tid = ac_to_tid[i]; 107 108 if (!tx_cur && !rx_cur) 109 continue; 110 111 ieee80211_sta_register_airtime(sta, tid, tx_cur, 112 rx_cur); 113 } 114 115 /* We don't support reading GI info from txs packets. 116 * For accurate tx status reporting and AQL improvement, 117 * we need to make sure that flags match so polling GI 118 * from per-sta counters directly. 119 */ 120 rate = &mlink->wcid.rate; 121 addr = mt7921_mac_wtbl_lmac_addr(idx, 122 MT_WTBL_TXRX_CAP_RATE_OFFSET); 123 val = mt76_rr(dev, addr); 124 125 switch (rate->bw) { 126 case RATE_INFO_BW_160: 127 bw = IEEE80211_STA_RX_BW_160; 128 break; 129 case RATE_INFO_BW_80: 130 bw = IEEE80211_STA_RX_BW_80; 131 break; 132 case RATE_INFO_BW_40: 133 bw = IEEE80211_STA_RX_BW_40; 134 break; 135 default: 136 bw = IEEE80211_STA_RX_BW_20; 137 break; 138 } 139 140 if (rate->flags & RATE_INFO_FLAGS_HE_MCS) { 141 u8 offs = MT_WTBL_TXRX_RATE_G2_HE + 2 * bw; 142 143 rate->he_gi = (val & (0x3 << offs)) >> offs; 144 } else if (rate->flags & 145 (RATE_INFO_FLAGS_VHT_MCS | RATE_INFO_FLAGS_MCS)) { 146 if (val & BIT(MT_WTBL_TXRX_RATE_G2 + bw)) 147 rate->flags |= RATE_INFO_FLAGS_SHORT_GI; 148 else 149 rate->flags &= ~RATE_INFO_FLAGS_SHORT_GI; 150 } 151 152 /* get signal strength of resp frames (CTS/BA/ACK) */ 153 addr = mt7921_mac_wtbl_lmac_addr(idx, 30); 154 val = mt76_rr(dev, addr); 155 156 rssi[0] = to_rssi(GENMASK(7, 0), val); 157 rssi[1] = to_rssi(GENMASK(15, 8), val); 158 rssi[2] = to_rssi(GENMASK(23, 16), val); 159 rssi[3] = to_rssi(GENMASK(31, 14), val); 160 161 mlink->ack_signal = 162 mt76_rx_signal(msta->vif->phy->mt76->antenna_mask, rssi); 163 164 ewma_avg_signal_add(&mlink->avg_ack_signal, -mlink->ack_signal); 165 } 166 } 167 168 static int 169 mt7921_mac_fill_rx(struct mt792x_dev *dev, struct sk_buff *skb) 170 { 171 u32 csum_mask = MT_RXD0_NORMAL_IP_SUM | MT_RXD0_NORMAL_UDP_TCP_SUM; 172 struct mt76_rx_status *status = (struct mt76_rx_status *)skb->cb; 173 bool hdr_trans, unicast, insert_ccmp_hdr = false; 174 u8 chfreq, qos_ctl = 0, remove_pad, amsdu_info; 175 u16 hdr_gap; 176 __le32 *rxv = NULL, *rxd = (__le32 *)skb->data; 177 struct mt76_phy *mphy = &dev->mt76.phy; 178 struct mt792x_phy *phy = &dev->phy; 179 struct ieee80211_supported_band *sband; 180 u32 csum_status = *(u32 *)skb->cb; 181 u32 rxd0 = le32_to_cpu(rxd[0]); 182 u32 rxd1 = le32_to_cpu(rxd[1]); 183 u32 rxd2 = le32_to_cpu(rxd[2]); 184 u32 rxd3 = le32_to_cpu(rxd[3]); 185 u32 rxd4 = le32_to_cpu(rxd[4]); 186 struct mt792x_sta *msta = NULL; 187 struct mt792x_link_sta *mlink; 188 u16 seq_ctrl = 0; 189 __le16 fc = 0; 190 u8 mode = 0; 191 int i, idx; 192 193 memset(status, 0, sizeof(*status)); 194 195 if (rxd1 & MT_RXD1_NORMAL_BAND_IDX) 196 return -EINVAL; 197 198 if (!test_bit(MT76_STATE_RUNNING, &mphy->state)) 199 return -EINVAL; 200 201 if (rxd2 & MT_RXD2_NORMAL_AMSDU_ERR) 202 return -EINVAL; 203 204 hdr_trans = rxd2 & MT_RXD2_NORMAL_HDR_TRANS; 205 if (hdr_trans && (rxd1 & MT_RXD1_NORMAL_CM)) 206 return -EINVAL; 207 208 /* ICV error or CCMP/BIP/WPI MIC error */ 209 if (rxd1 & MT_RXD1_NORMAL_ICV_ERR) 210 status->flag |= RX_FLAG_ONLY_MONITOR; 211 212 chfreq = FIELD_GET(MT_RXD3_NORMAL_CH_FREQ, rxd3); 213 unicast = FIELD_GET(MT_RXD3_NORMAL_ADDR_TYPE, rxd3) == MT_RXD3_NORMAL_U2M; 214 idx = FIELD_GET(MT_RXD1_NORMAL_WLAN_IDX, rxd1); 215 status->wcid = mt792x_rx_get_wcid(dev, idx, unicast); 216 217 if (status->wcid) { 218 mlink = container_of(status->wcid, struct mt792x_link_sta, wcid); 219 msta = container_of(mlink, struct mt792x_sta, deflink); 220 mt76_wcid_add_poll(&dev->mt76, &mlink->wcid); 221 } 222 223 mt792x_get_status_freq_info(status, chfreq); 224 225 switch (status->band) { 226 case NL80211_BAND_5GHZ: 227 sband = &mphy->sband_5g.sband; 228 break; 229 case NL80211_BAND_6GHZ: 230 sband = &mphy->sband_6g.sband; 231 break; 232 default: 233 sband = &mphy->sband_2g.sband; 234 break; 235 } 236 237 if (!sband->channels) 238 return -EINVAL; 239 240 if (mt76_is_mmio(&dev->mt76) && (rxd0 & csum_mask) == csum_mask && 241 !(csum_status & (BIT(0) | BIT(2) | BIT(3)))) 242 skb->ip_summed = CHECKSUM_UNNECESSARY; 243 244 if (rxd1 & MT_RXD1_NORMAL_FCS_ERR) 245 status->flag |= RX_FLAG_FAILED_FCS_CRC; 246 247 if (rxd1 & MT_RXD1_NORMAL_TKIP_MIC_ERR) 248 status->flag |= RX_FLAG_MMIC_ERROR; 249 250 if (FIELD_GET(MT_RXD1_NORMAL_SEC_MODE, rxd1) != 0 && 251 !(rxd1 & (MT_RXD1_NORMAL_CLM | MT_RXD1_NORMAL_CM))) { 252 status->flag |= RX_FLAG_DECRYPTED; 253 status->flag |= RX_FLAG_IV_STRIPPED; 254 status->flag |= RX_FLAG_MMIC_STRIPPED | RX_FLAG_MIC_STRIPPED; 255 } 256 257 remove_pad = FIELD_GET(MT_RXD2_NORMAL_HDR_OFFSET, rxd2); 258 259 if (rxd2 & MT_RXD2_NORMAL_MAX_LEN_ERROR) 260 return -EINVAL; 261 262 rxd += 6; 263 if (rxd1 & MT_RXD1_NORMAL_GROUP_4) { 264 u32 v0 = le32_to_cpu(rxd[0]); 265 u32 v2 = le32_to_cpu(rxd[2]); 266 267 fc = cpu_to_le16(FIELD_GET(MT_RXD6_FRAME_CONTROL, v0)); 268 seq_ctrl = FIELD_GET(MT_RXD8_SEQ_CTRL, v2); 269 qos_ctl = FIELD_GET(MT_RXD8_QOS_CTL, v2); 270 271 rxd += 4; 272 if ((u8 *)rxd - skb->data >= skb->len) 273 return -EINVAL; 274 } 275 276 if (rxd1 & MT_RXD1_NORMAL_GROUP_1) { 277 u8 *data = (u8 *)rxd; 278 279 if (status->flag & RX_FLAG_DECRYPTED) { 280 switch (FIELD_GET(MT_RXD1_NORMAL_SEC_MODE, rxd1)) { 281 case MT_CIPHER_AES_CCMP: 282 case MT_CIPHER_CCMP_CCX: 283 case MT_CIPHER_CCMP_256: 284 insert_ccmp_hdr = 285 FIELD_GET(MT_RXD2_NORMAL_FRAG, rxd2); 286 fallthrough; 287 case MT_CIPHER_TKIP: 288 case MT_CIPHER_TKIP_NO_MIC: 289 case MT_CIPHER_GCMP: 290 case MT_CIPHER_GCMP_256: 291 status->iv[0] = data[5]; 292 status->iv[1] = data[4]; 293 status->iv[2] = data[3]; 294 status->iv[3] = data[2]; 295 status->iv[4] = data[1]; 296 status->iv[5] = data[0]; 297 break; 298 default: 299 break; 300 } 301 } 302 rxd += 4; 303 if ((u8 *)rxd - skb->data >= skb->len) 304 return -EINVAL; 305 } 306 307 if (rxd1 & MT_RXD1_NORMAL_GROUP_2) { 308 status->timestamp = le32_to_cpu(rxd[0]); 309 status->flag |= RX_FLAG_MACTIME_START; 310 311 if (!(rxd2 & MT_RXD2_NORMAL_NON_AMPDU)) { 312 status->flag |= RX_FLAG_AMPDU_DETAILS; 313 314 /* all subframes of an A-MPDU have the same timestamp */ 315 if (phy->rx_ampdu_ts != status->timestamp) { 316 if (!++phy->ampdu_ref) 317 phy->ampdu_ref++; 318 } 319 phy->rx_ampdu_ts = status->timestamp; 320 321 status->ampdu_ref = phy->ampdu_ref; 322 } 323 324 rxd += 2; 325 if ((u8 *)rxd - skb->data >= skb->len) 326 return -EINVAL; 327 } 328 329 /* RXD Group 3 - P-RXV */ 330 if (rxd1 & MT_RXD1_NORMAL_GROUP_3) { 331 u32 v0, v1; 332 int ret; 333 334 rxv = rxd; 335 rxd += 2; 336 if ((u8 *)rxd - skb->data >= skb->len) 337 return -EINVAL; 338 339 v0 = le32_to_cpu(rxv[0]); 340 v1 = le32_to_cpu(rxv[1]); 341 342 if (v0 & MT_PRXV_HT_AD_CODE) 343 status->enc_flags |= RX_ENC_FLAG_LDPC; 344 345 ret = mt76_connac2_mac_fill_rx_rate(&dev->mt76, status, sband, 346 rxv, &mode); 347 if (ret < 0) 348 return ret; 349 350 if (rxd1 & MT_RXD1_NORMAL_GROUP_5) { 351 rxd += 6; 352 if ((u8 *)rxd - skb->data >= skb->len) 353 return -EINVAL; 354 355 rxv = rxd; 356 /* Monitor mode would use RCPI described in GROUP 5 357 * instead. 358 */ 359 v1 = le32_to_cpu(rxv[0]); 360 361 rxd += 12; 362 if ((u8 *)rxd - skb->data >= skb->len) 363 return -EINVAL; 364 } 365 366 status->chains = mphy->antenna_mask; 367 status->chain_signal[0] = to_rssi(MT_PRXV_RCPI0, v1); 368 status->chain_signal[1] = to_rssi(MT_PRXV_RCPI1, v1); 369 status->chain_signal[2] = to_rssi(MT_PRXV_RCPI2, v1); 370 status->chain_signal[3] = to_rssi(MT_PRXV_RCPI3, v1); 371 status->signal = -128; 372 for (i = 0; i < hweight8(mphy->antenna_mask); i++) { 373 if (!(status->chains & BIT(i)) || 374 status->chain_signal[i] >= 0) 375 continue; 376 377 status->signal = max(status->signal, 378 status->chain_signal[i]); 379 } 380 } 381 382 amsdu_info = FIELD_GET(MT_RXD4_NORMAL_PAYLOAD_FORMAT, rxd4); 383 status->amsdu = !!amsdu_info; 384 if (status->amsdu) { 385 status->first_amsdu = amsdu_info == MT_RXD4_FIRST_AMSDU_FRAME; 386 status->last_amsdu = amsdu_info == MT_RXD4_LAST_AMSDU_FRAME; 387 } 388 389 hdr_gap = (u8 *)rxd - skb->data + 2 * remove_pad; 390 if (hdr_trans && ieee80211_has_morefrags(fc)) { 391 struct ieee80211_vif *vif; 392 int err; 393 394 if (!msta || !msta->vif) 395 return -EINVAL; 396 397 vif = container_of((void *)msta->vif, struct ieee80211_vif, 398 drv_priv); 399 err = mt76_connac2_reverse_frag0_hdr_trans(vif, skb, hdr_gap); 400 if (err) 401 return err; 402 403 hdr_trans = false; 404 } else { 405 skb_pull(skb, hdr_gap); 406 if (!hdr_trans && status->amsdu) { 407 memmove(skb->data + 2, skb->data, 408 ieee80211_get_hdrlen_from_skb(skb)); 409 skb_pull(skb, 2); 410 } 411 } 412 413 if (!hdr_trans) { 414 struct ieee80211_hdr *hdr; 415 416 if (insert_ccmp_hdr) { 417 u8 key_id = FIELD_GET(MT_RXD1_NORMAL_KEY_ID, rxd1); 418 419 mt76_insert_ccmp_hdr(skb, key_id); 420 } 421 422 hdr = mt76_skb_get_hdr(skb); 423 fc = hdr->frame_control; 424 if (ieee80211_is_data_qos(fc)) { 425 seq_ctrl = le16_to_cpu(hdr->seq_ctrl); 426 qos_ctl = *ieee80211_get_qos_ctl(hdr); 427 } 428 } else { 429 status->flag |= RX_FLAG_8023; 430 } 431 432 mt792x_mac_assoc_rssi(dev, skb); 433 434 if (rxv && mode >= MT_PHY_TYPE_HE_SU && !(status->flag & RX_FLAG_8023)) 435 mt76_connac2_mac_decode_he_radiotap(&dev->mt76, skb, rxv, mode); 436 437 if (!status->wcid || !ieee80211_is_data_qos(fc)) 438 return 0; 439 440 status->aggr = unicast && !ieee80211_is_qos_nullfunc(fc); 441 status->seqno = IEEE80211_SEQ_TO_SN(seq_ctrl); 442 status->qos_ctl = qos_ctl; 443 444 return 0; 445 } 446 447 void mt7921_mac_add_txs(struct mt792x_dev *dev, void *data) 448 { 449 struct mt792x_link_sta *mlink; 450 struct mt76_wcid *wcid; 451 __le32 *txs_data = data; 452 u16 wcidx; 453 u8 pid; 454 455 if (le32_get_bits(txs_data[0], MT_TXS0_TXS_FORMAT) > 1) 456 return; 457 458 wcidx = le32_get_bits(txs_data[2], MT_TXS2_WCID); 459 pid = le32_get_bits(txs_data[3], MT_TXS3_PID); 460 461 if (pid < MT_PACKET_ID_FIRST) 462 return; 463 464 if (wcidx >= MT792x_WTBL_SIZE) 465 return; 466 467 rcu_read_lock(); 468 469 wcid = mt76_wcid_ptr(dev, wcidx); 470 if (!wcid) 471 goto out; 472 473 mlink = container_of(wcid, struct mt792x_link_sta, wcid); 474 475 mt76_connac2_mac_add_txs_skb(&dev->mt76, wcid, pid, txs_data); 476 if (!wcid->sta) 477 goto out; 478 479 mt76_wcid_add_poll(&dev->mt76, &mlink->wcid); 480 481 out: 482 rcu_read_unlock(); 483 } 484 485 static void mt7921_mac_tx_free(struct mt792x_dev *dev, void *data, int len) 486 { 487 struct mt76_connac_tx_free *free = data; 488 __le32 *tx_info = (__le32 *)(data + sizeof(*free)); 489 struct mt76_dev *mdev = &dev->mt76; 490 struct mt76_txwi_cache *txwi; 491 struct ieee80211_sta *sta = NULL; 492 struct mt76_wcid *wcid = NULL; 493 struct sk_buff *skb, *tmp; 494 void *end = data + len; 495 LIST_HEAD(free_list); 496 bool wake = false; 497 u8 i, count; 498 499 /* clean DMA queues and unmap buffers first */ 500 mt76_queue_tx_cleanup(dev, dev->mphy.q_tx[MT_TXQ_PSD], false); 501 mt76_queue_tx_cleanup(dev, dev->mphy.q_tx[MT_TXQ_BE], false); 502 503 count = le16_get_bits(free->ctrl, MT_TX_FREE_MSDU_CNT); 504 if (WARN_ON_ONCE((void *)&tx_info[count] > end)) 505 return; 506 507 for (i = 0; i < count; i++) { 508 u32 msdu, info = le32_to_cpu(tx_info[i]); 509 u8 stat; 510 511 /* 1'b1: new wcid pair. 512 * 1'b0: msdu_id with the same 'wcid pair' as above. 513 */ 514 if (info & MT_TX_FREE_PAIR) { 515 struct mt792x_link_sta *mlink; 516 u16 idx; 517 518 count++; 519 idx = FIELD_GET(MT_TX_FREE_WLAN_ID, info); 520 wcid = mt76_wcid_ptr(dev, idx); 521 sta = wcid_to_sta(wcid); 522 if (!sta) 523 continue; 524 525 mlink = container_of(wcid, struct mt792x_link_sta, wcid); 526 mt76_wcid_add_poll(&dev->mt76, &mlink->wcid); 527 continue; 528 } 529 530 msdu = FIELD_GET(MT_TX_FREE_MSDU_ID, info); 531 stat = FIELD_GET(MT_TX_FREE_STATUS, info); 532 533 if (wcid) { 534 u32 count = FIELD_GET(MT_TX_FREE_COUNT, info); 535 536 wcid->stats.tx_retries += count ? count - 1 : 0; 537 wcid->stats.tx_failed += !!stat; 538 } 539 540 txwi = mt76_token_release(mdev, msdu, &wake); 541 if (!txwi) 542 continue; 543 544 mt76_connac2_txwi_free(mdev, txwi, sta, &free_list); 545 } 546 547 if (wake) 548 mt76_set_tx_blocked(&dev->mt76, false); 549 550 list_for_each_entry_safe(skb, tmp, &free_list, list) { 551 skb_list_del_init(skb); 552 napi_consume_skb(skb, 1); 553 } 554 555 rcu_read_lock(); 556 mt7921_mac_sta_poll(dev); 557 rcu_read_unlock(); 558 559 mt76_worker_schedule(&dev->mt76.tx_worker); 560 } 561 562 bool mt7921_rx_check(struct mt76_dev *mdev, void *data, int len) 563 { 564 struct mt792x_dev *dev = container_of(mdev, struct mt792x_dev, mt76); 565 __le32 *rxd = (__le32 *)data; 566 __le32 *end = (__le32 *)&rxd[len / 4]; 567 enum rx_pkt_type type; 568 569 type = le32_get_bits(rxd[0], MT_RXD0_PKT_TYPE); 570 571 switch (type) { 572 case PKT_TYPE_TXRX_NOTIFY: 573 /* PKT_TYPE_TXRX_NOTIFY can be received only by mmio devices */ 574 mt7921_mac_tx_free(dev, data, len); /* mmio */ 575 return false; 576 case PKT_TYPE_TXS: 577 for (rxd += 2; rxd + 8 <= end; rxd += 8) 578 mt7921_mac_add_txs(dev, rxd); 579 return false; 580 default: 581 return true; 582 } 583 } 584 EXPORT_SYMBOL_GPL(mt7921_rx_check); 585 586 void mt7921_queue_rx_skb(struct mt76_dev *mdev, enum mt76_rxq_id q, 587 struct sk_buff *skb, u32 *info) 588 { 589 struct mt792x_dev *dev = container_of(mdev, struct mt792x_dev, mt76); 590 __le32 *rxd = (__le32 *)skb->data; 591 __le32 *end = (__le32 *)&skb->data[skb->len]; 592 enum rx_pkt_type type; 593 u16 flag; 594 595 type = le32_get_bits(rxd[0], MT_RXD0_PKT_TYPE); 596 flag = le32_get_bits(rxd[0], MT_RXD0_PKT_FLAG); 597 598 if (type == PKT_TYPE_RX_EVENT && flag == 0x1) 599 type = PKT_TYPE_NORMAL_MCU; 600 601 switch (type) { 602 case PKT_TYPE_TXRX_NOTIFY: 603 /* PKT_TYPE_TXRX_NOTIFY can be received only by mmio devices */ 604 mt7921_mac_tx_free(dev, skb->data, skb->len); 605 napi_consume_skb(skb, 1); 606 break; 607 case PKT_TYPE_RX_EVENT: 608 mt7921_mcu_rx_event(dev, skb); 609 break; 610 case PKT_TYPE_TXS: 611 for (rxd += 2; rxd + 8 <= end; rxd += 8) 612 mt7921_mac_add_txs(dev, rxd); 613 dev_kfree_skb(skb); 614 break; 615 case PKT_TYPE_NORMAL_MCU: 616 case PKT_TYPE_NORMAL: 617 if (!mt7921_mac_fill_rx(dev, skb)) { 618 mt76_rx(&dev->mt76, q, skb); 619 return; 620 } 621 fallthrough; 622 default: 623 dev_kfree_skb(skb); 624 break; 625 } 626 } 627 EXPORT_SYMBOL_GPL(mt7921_queue_rx_skb); 628 629 static void 630 mt7921_vif_connect_iter(void *priv, u8 *mac, 631 struct ieee80211_vif *vif) 632 { 633 struct mt792x_vif *mvif = (struct mt792x_vif *)vif->drv_priv; 634 struct mt792x_dev *dev = mvif->phy->dev; 635 struct ieee80211_hw *hw = mt76_hw(dev); 636 637 if (vif->type == NL80211_IFTYPE_STATION) 638 ieee80211_disconnect(vif, true); 639 640 mt76_connac_mcu_uni_add_dev(&dev->mphy, &vif->bss_conf, 641 &mvif->bss_conf.mt76, 642 &mvif->sta.deflink.wcid, true); 643 mt7921_mcu_set_tx(dev, vif); 644 645 if (vif->type == NL80211_IFTYPE_AP) { 646 mt76_connac_mcu_uni_add_bss(dev->phy.mt76, vif, &mvif->sta.deflink.wcid, 647 true, NULL); 648 mt7921_mcu_sta_update(dev, NULL, vif, true, 649 MT76_STA_INFO_STATE_NONE); 650 mt7921_mcu_uni_add_beacon_offload(dev, hw, vif, true); 651 } 652 } 653 654 /* system error recovery */ 655 void mt7921_mac_reset_work(struct work_struct *work) 656 { 657 struct mt792x_dev *dev = container_of(work, struct mt792x_dev, 658 reset_work); 659 struct ieee80211_hw *hw = mt76_hw(dev); 660 struct mt76_connac_pm *pm = &dev->pm; 661 int i, ret; 662 663 dev_dbg(dev->mt76.dev, "chip reset\n"); 664 set_bit(MT76_RESET, &dev->mphy.state); 665 dev->hw_full_reset = true; 666 ieee80211_stop_queues(hw); 667 668 cancel_delayed_work_sync(&dev->mphy.mac_work); 669 cancel_delayed_work_sync(&pm->ps_work); 670 cancel_work_sync(&pm->wake_work); 671 672 for (i = 0; i < 10; i++) { 673 mutex_lock(&dev->mt76.mutex); 674 ret = mt792x_dev_reset(dev); 675 mutex_unlock(&dev->mt76.mutex); 676 677 if (!ret) 678 break; 679 } 680 681 if ((mt76_is_sdio(&dev->mt76) || mt76_is_usb(&dev->mt76)) && 682 atomic_read(&dev->mt76.bus_hung)) 683 return; 684 685 if (i == 10) 686 dev_err(dev->mt76.dev, "chip reset failed\n"); 687 688 if (test_and_clear_bit(MT76_HW_SCANNING, &dev->mphy.state)) { 689 struct cfg80211_scan_info info = { 690 .aborted = true, 691 }; 692 693 ieee80211_scan_completed(dev->mphy.hw, &info); 694 } 695 696 dev->hw_full_reset = false; 697 clear_bit(MT76_RESET, &dev->mphy.state); 698 pm->suspended = false; 699 ieee80211_wake_queues(hw); 700 ieee80211_iterate_active_interfaces(hw, 701 IEEE80211_IFACE_ITER_RESUME_ALL, 702 mt7921_vif_connect_iter, NULL); 703 mt76_connac_power_save_sched(&dev->mt76.phy, pm); 704 705 mt7921_regd_change(&dev->phy, "00"); 706 } 707 708 void mt7921_coredump_work(struct work_struct *work) 709 { 710 struct mt792x_dev *dev; 711 char *dump, *data; 712 713 dev = (struct mt792x_dev *)container_of(work, struct mt792x_dev, 714 coredump.work.work); 715 716 if (time_is_after_jiffies(dev->coredump.last_activity + 717 4 * MT76_CONNAC_COREDUMP_TIMEOUT)) { 718 queue_delayed_work(dev->mt76.wq, &dev->coredump.work, 719 MT76_CONNAC_COREDUMP_TIMEOUT); 720 return; 721 } 722 723 dump = vzalloc(MT76_CONNAC_COREDUMP_SZ); 724 data = dump; 725 726 while (true) { 727 struct sk_buff *skb; 728 729 spin_lock_bh(&dev->mt76.lock); 730 skb = __skb_dequeue(&dev->coredump.msg_list); 731 spin_unlock_bh(&dev->mt76.lock); 732 733 if (!skb) 734 break; 735 736 skb_pull(skb, sizeof(struct mt76_connac2_mcu_rxd)); 737 if (!dump || data + skb->len - dump > MT76_CONNAC_COREDUMP_SZ) { 738 dev_kfree_skb(skb); 739 continue; 740 } 741 742 memcpy(data, skb->data, skb->len); 743 data += skb->len; 744 745 dev_kfree_skb(skb); 746 } 747 748 if (dump) 749 dev_coredumpv(dev->mt76.dev, dump, MT76_CONNAC_COREDUMP_SZ, 750 GFP_KERNEL); 751 752 mt792x_reset(&dev->mt76); 753 } 754 755 /* usb_sdio */ 756 static void 757 mt7921_usb_sdio_write_txwi(struct mt792x_dev *dev, struct mt76_wcid *wcid, 758 enum mt76_txq_id qid, struct ieee80211_sta *sta, 759 struct ieee80211_key_conf *key, int pid, 760 struct sk_buff *skb) 761 { 762 __le32 *txwi = (__le32 *)(skb->data - MT_SDIO_TXD_SIZE); 763 764 memset(txwi, 0, MT_SDIO_TXD_SIZE); 765 mt76_connac2_mac_write_txwi(&dev->mt76, txwi, skb, wcid, key, pid, qid, 0); 766 skb_push(skb, MT_SDIO_TXD_SIZE); 767 } 768 769 int mt7921_usb_sdio_tx_prepare_skb(struct mt76_dev *mdev, void *txwi_ptr, 770 enum mt76_txq_id qid, struct mt76_wcid *wcid, 771 struct ieee80211_sta *sta, 772 struct mt76_tx_info *tx_info) 773 { 774 struct mt792x_dev *dev = container_of(mdev, struct mt792x_dev, mt76); 775 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_info->skb); 776 struct ieee80211_key_conf *key = info->control.hw_key; 777 struct sk_buff *skb = tx_info->skb; 778 int err, pad, pktid, type; 779 780 if (unlikely(tx_info->skb->len <= ETH_HLEN)) 781 return -EINVAL; 782 783 err = skb_cow_head(skb, MT_SDIO_TXD_SIZE + MT_SDIO_HDR_SIZE); 784 if (err) 785 return err; 786 787 if (!wcid) 788 wcid = &dev->mt76.global_wcid; 789 790 if (sta) { 791 struct mt792x_sta *msta = (struct mt792x_sta *)sta->drv_priv; 792 793 if (time_after(jiffies, msta->deflink.last_txs + HZ / 4)) { 794 info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS; 795 msta->deflink.last_txs = jiffies; 796 } 797 } 798 799 pktid = mt76_tx_status_skb_add(&dev->mt76, wcid, skb); 800 mt7921_usb_sdio_write_txwi(dev, wcid, qid, sta, key, pktid, skb); 801 802 type = mt76_is_sdio(mdev) ? MT7921_SDIO_DATA : 0; 803 mt792x_skb_add_usb_sdio_hdr(dev, skb, type); 804 pad = round_up(skb->len, 4) - skb->len; 805 if (mt76_is_usb(mdev)) 806 pad += 4; 807 808 err = mt76_skb_adjust_pad(skb, pad); 809 if (err) 810 /* Release pktid in case of error. */ 811 idr_remove(&wcid->pktid, pktid); 812 813 return err; 814 } 815 EXPORT_SYMBOL_GPL(mt7921_usb_sdio_tx_prepare_skb); 816 817 void mt7921_usb_sdio_tx_complete_skb(struct mt76_dev *mdev, 818 struct mt76_queue_entry *e) 819 { 820 __le32 *txwi = (__le32 *)(e->skb->data + MT_SDIO_HDR_SIZE); 821 unsigned int headroom = MT_SDIO_TXD_SIZE + MT_SDIO_HDR_SIZE; 822 struct ieee80211_sta *sta; 823 struct mt76_wcid *wcid; 824 u16 idx; 825 826 idx = le32_get_bits(txwi[1], MT_TXD1_WLAN_IDX); 827 wcid = __mt76_wcid_ptr(mdev, idx); 828 sta = wcid_to_sta(wcid); 829 830 if (sta && likely(e->skb->protocol != cpu_to_be16(ETH_P_PAE))) 831 mt76_connac2_tx_check_aggr(sta, txwi); 832 833 skb_pull(e->skb, headroom); 834 mt76_tx_complete_skb(mdev, e->wcid, e->skb); 835 } 836 EXPORT_SYMBOL_GPL(mt7921_usb_sdio_tx_complete_skb); 837 838 bool mt7921_usb_sdio_tx_status_data(struct mt76_dev *mdev, u8 *update) 839 { 840 struct mt792x_dev *dev = container_of(mdev, struct mt792x_dev, mt76); 841 842 mt792x_mutex_acquire(dev); 843 mt7921_mac_sta_poll(dev); 844 mt792x_mutex_release(dev); 845 846 return false; 847 } 848 EXPORT_SYMBOL_GPL(mt7921_usb_sdio_tx_status_data); 849 850 #if IS_ENABLED(CONFIG_IPV6) 851 void mt7921_set_ipv6_ns_work(struct work_struct *work) 852 { 853 struct mt792x_dev *dev = container_of(work, struct mt792x_dev, 854 ipv6_ns_work); 855 struct sk_buff *skb; 856 int ret = 0; 857 858 do { 859 skb = skb_dequeue(&dev->ipv6_ns_list); 860 861 if (!skb) 862 break; 863 864 mt792x_mutex_acquire(dev); 865 ret = mt76_mcu_skb_send_msg(&dev->mt76, skb, 866 MCU_UNI_CMD(OFFLOAD), true); 867 mt792x_mutex_release(dev); 868 869 } while (!ret); 870 871 if (ret) 872 skb_queue_purge(&dev->ipv6_ns_list); 873 } 874 #endif 875