1 // SPDX-License-Identifier: ISC 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 "mcu.h" 11 12 #define MT_WTBL_TXRX_CAP_RATE_OFFSET 7 13 #define MT_WTBL_TXRX_RATE_G2_HE 24 14 #define MT_WTBL_TXRX_RATE_G2 12 15 16 #define MT_WTBL_AC0_CTT_OFFSET 20 17 18 bool mt7921_mac_wtbl_update(struct mt792x_dev *dev, int idx, u32 mask) 19 { 20 mt76_rmw(dev, MT_WTBL_UPDATE, MT_WTBL_UPDATE_WLAN_IDX, 21 FIELD_PREP(MT_WTBL_UPDATE_WLAN_IDX, idx) | mask); 22 23 return mt76_poll(dev, MT_WTBL_UPDATE, MT_WTBL_UPDATE_BUSY, 24 0, 5000); 25 } 26 27 static u32 mt7921_mac_wtbl_lmac_addr(int idx, u8 offset) 28 { 29 return MT_WTBL_LMAC_OFFS(idx, 0) + offset * 4; 30 } 31 32 static void mt7921_mac_sta_poll(struct mt792x_dev *dev) 33 { 34 static const u8 ac_to_tid[] = { 35 [IEEE80211_AC_BE] = 0, 36 [IEEE80211_AC_BK] = 1, 37 [IEEE80211_AC_VI] = 4, 38 [IEEE80211_AC_VO] = 6 39 }; 40 struct ieee80211_sta *sta; 41 struct mt792x_sta *msta; 42 struct mt792x_link_sta *mlink; 43 u32 tx_time[IEEE80211_NUM_ACS], rx_time[IEEE80211_NUM_ACS]; 44 LIST_HEAD(sta_poll_list); 45 struct rate_info *rate; 46 s8 rssi[4]; 47 int i; 48 49 spin_lock_bh(&dev->mt76.sta_poll_lock); 50 list_splice_init(&dev->mt76.sta_poll_list, &sta_poll_list); 51 spin_unlock_bh(&dev->mt76.sta_poll_lock); 52 53 while (true) { 54 bool clear = false; 55 u32 addr, val; 56 u16 idx; 57 u8 bw; 58 59 spin_lock_bh(&dev->mt76.sta_poll_lock); 60 if (list_empty(&sta_poll_list)) { 61 spin_unlock_bh(&dev->mt76.sta_poll_lock); 62 break; 63 } 64 mlink = list_first_entry(&sta_poll_list, 65 struct mt792x_link_sta, 66 wcid.poll_list); 67 msta = container_of(mlink, struct mt792x_sta, deflink); 68 list_del_init(&mlink->wcid.poll_list); 69 spin_unlock_bh(&dev->mt76.sta_poll_lock); 70 71 idx = mlink->wcid.idx; 72 addr = mt7921_mac_wtbl_lmac_addr(idx, MT_WTBL_AC0_CTT_OFFSET); 73 74 for (i = 0; i < IEEE80211_NUM_ACS; i++) { 75 u32 tx_last = mlink->airtime_ac[i]; 76 u32 rx_last = mlink->airtime_ac[i + 4]; 77 78 mlink->airtime_ac[i] = mt76_rr(dev, addr); 79 mlink->airtime_ac[i + 4] = mt76_rr(dev, addr + 4); 80 81 tx_time[i] = mlink->airtime_ac[i] - tx_last; 82 rx_time[i] = mlink->airtime_ac[i + 4] - rx_last; 83 84 if ((tx_last | rx_last) & BIT(30)) 85 clear = true; 86 87 addr += 8; 88 } 89 90 if (clear) { 91 mt7921_mac_wtbl_update(dev, idx, 92 MT_WTBL_UPDATE_ADM_COUNT_CLEAR); 93 memset(mlink->airtime_ac, 0, sizeof(mlink->airtime_ac)); 94 } 95 96 if (!mlink->wcid.sta) 97 continue; 98 99 sta = container_of((void *)msta, struct ieee80211_sta, 100 drv_priv); 101 for (i = 0; i < IEEE80211_NUM_ACS; i++) { 102 u8 q = mt76_connac_lmac_mapping(i); 103 u32 tx_cur = tx_time[q]; 104 u32 rx_cur = rx_time[q]; 105 u8 tid = ac_to_tid[i]; 106 107 if (!tx_cur && !rx_cur) 108 continue; 109 110 ieee80211_sta_register_airtime(sta, tid, tx_cur, 111 rx_cur); 112 } 113 114 /* We don't support reading GI info from txs packets. 115 * For accurate tx status reporting and AQL improvement, 116 * we need to make sure that flags match so polling GI 117 * from per-sta counters directly. 118 */ 119 rate = &mlink->wcid.rate; 120 addr = mt7921_mac_wtbl_lmac_addr(idx, 121 MT_WTBL_TXRX_CAP_RATE_OFFSET); 122 val = mt76_rr(dev, addr); 123 124 switch (rate->bw) { 125 case RATE_INFO_BW_160: 126 bw = IEEE80211_STA_RX_BW_160; 127 break; 128 case RATE_INFO_BW_80: 129 bw = IEEE80211_STA_RX_BW_80; 130 break; 131 case RATE_INFO_BW_40: 132 bw = IEEE80211_STA_RX_BW_40; 133 break; 134 default: 135 bw = IEEE80211_STA_RX_BW_20; 136 break; 137 } 138 139 if (rate->flags & RATE_INFO_FLAGS_HE_MCS) { 140 u8 offs = MT_WTBL_TXRX_RATE_G2_HE + 2 * bw; 141 142 rate->he_gi = (val & (0x3 << offs)) >> offs; 143 } else if (rate->flags & 144 (RATE_INFO_FLAGS_VHT_MCS | RATE_INFO_FLAGS_MCS)) { 145 if (val & BIT(MT_WTBL_TXRX_RATE_G2 + bw)) 146 rate->flags |= RATE_INFO_FLAGS_SHORT_GI; 147 else 148 rate->flags &= ~RATE_INFO_FLAGS_SHORT_GI; 149 } 150 151 /* get signal strength of resp frames (CTS/BA/ACK) */ 152 addr = mt7921_mac_wtbl_lmac_addr(idx, 30); 153 val = mt76_rr(dev, addr); 154 155 rssi[0] = to_rssi(GENMASK(7, 0), val); 156 rssi[1] = to_rssi(GENMASK(15, 8), val); 157 rssi[2] = to_rssi(GENMASK(23, 16), val); 158 rssi[3] = to_rssi(GENMASK(31, 14), val); 159 160 mlink->ack_signal = 161 mt76_rx_signal(msta->vif->phy->mt76->antenna_mask, rssi); 162 163 ewma_avg_signal_add(&mlink->avg_ack_signal, -mlink->ack_signal); 164 } 165 } 166 167 static int 168 mt7921_mac_fill_rx(struct mt792x_dev *dev, struct sk_buff *skb) 169 { 170 u32 csum_mask = MT_RXD0_NORMAL_IP_SUM | MT_RXD0_NORMAL_UDP_TCP_SUM; 171 struct mt76_rx_status *status = (struct mt76_rx_status *)skb->cb; 172 bool hdr_trans, unicast, insert_ccmp_hdr = false; 173 u8 chfreq, qos_ctl = 0, remove_pad, amsdu_info; 174 u16 hdr_gap; 175 __le32 *rxv = NULL, *rxd = (__le32 *)skb->data; 176 struct mt76_phy *mphy = &dev->mt76.phy; 177 struct mt792x_phy *phy = &dev->phy; 178 struct ieee80211_supported_band *sband; 179 u32 csum_status = *(u32 *)skb->cb; 180 u32 rxd0 = le32_to_cpu(rxd[0]); 181 u32 rxd1 = le32_to_cpu(rxd[1]); 182 u32 rxd2 = le32_to_cpu(rxd[2]); 183 u32 rxd3 = le32_to_cpu(rxd[3]); 184 u32 rxd4 = le32_to_cpu(rxd[4]); 185 struct mt792x_sta *msta = NULL; 186 struct mt792x_link_sta *mlink; 187 u16 seq_ctrl = 0; 188 __le16 fc = 0; 189 u8 mode = 0; 190 int i, idx; 191 192 memset(status, 0, sizeof(*status)); 193 194 if (rxd1 & MT_RXD1_NORMAL_BAND_IDX) 195 return -EINVAL; 196 197 if (!test_bit(MT76_STATE_RUNNING, &mphy->state)) 198 return -EINVAL; 199 200 if (rxd2 & MT_RXD2_NORMAL_AMSDU_ERR) 201 return -EINVAL; 202 203 hdr_trans = rxd2 & MT_RXD2_NORMAL_HDR_TRANS; 204 if (hdr_trans && (rxd1 & MT_RXD1_NORMAL_CM)) 205 return -EINVAL; 206 207 /* ICV error or CCMP/BIP/WPI MIC error */ 208 if (rxd1 & MT_RXD1_NORMAL_ICV_ERR) 209 status->flag |= RX_FLAG_ONLY_MONITOR; 210 211 chfreq = FIELD_GET(MT_RXD3_NORMAL_CH_FREQ, rxd3); 212 unicast = FIELD_GET(MT_RXD3_NORMAL_ADDR_TYPE, rxd3) == MT_RXD3_NORMAL_U2M; 213 idx = FIELD_GET(MT_RXD1_NORMAL_WLAN_IDX, rxd1); 214 status->wcid = mt792x_rx_get_wcid(dev, idx, unicast); 215 216 if (status->wcid) { 217 mlink = container_of(status->wcid, struct mt792x_link_sta, wcid); 218 msta = container_of(mlink, struct mt792x_sta, deflink); 219 spin_lock_bh(&dev->mt76.sta_poll_lock); 220 if (list_empty(&mlink->wcid.poll_list)) 221 list_add_tail(&mlink->wcid.poll_list, 222 &dev->mt76.sta_poll_list); 223 spin_unlock_bh(&dev->mt76.sta_poll_lock); 224 } 225 226 mt792x_get_status_freq_info(status, chfreq); 227 228 switch (status->band) { 229 case NL80211_BAND_5GHZ: 230 sband = &mphy->sband_5g.sband; 231 break; 232 case NL80211_BAND_6GHZ: 233 sband = &mphy->sband_6g.sband; 234 break; 235 default: 236 sband = &mphy->sband_2g.sband; 237 break; 238 } 239 240 if (!sband->channels) 241 return -EINVAL; 242 243 if (mt76_is_mmio(&dev->mt76) && (rxd0 & csum_mask) == csum_mask && 244 !(csum_status & (BIT(0) | BIT(2) | BIT(3)))) 245 skb->ip_summed = CHECKSUM_UNNECESSARY; 246 247 if (rxd1 & MT_RXD1_NORMAL_FCS_ERR) 248 status->flag |= RX_FLAG_FAILED_FCS_CRC; 249 250 if (rxd1 & MT_RXD1_NORMAL_TKIP_MIC_ERR) 251 status->flag |= RX_FLAG_MMIC_ERROR; 252 253 if (FIELD_GET(MT_RXD1_NORMAL_SEC_MODE, rxd1) != 0 && 254 !(rxd1 & (MT_RXD1_NORMAL_CLM | MT_RXD1_NORMAL_CM))) { 255 status->flag |= RX_FLAG_DECRYPTED; 256 status->flag |= RX_FLAG_IV_STRIPPED; 257 status->flag |= RX_FLAG_MMIC_STRIPPED | RX_FLAG_MIC_STRIPPED; 258 } 259 260 remove_pad = FIELD_GET(MT_RXD2_NORMAL_HDR_OFFSET, rxd2); 261 262 if (rxd2 & MT_RXD2_NORMAL_MAX_LEN_ERROR) 263 return -EINVAL; 264 265 rxd += 6; 266 if (rxd1 & MT_RXD1_NORMAL_GROUP_4) { 267 u32 v0 = le32_to_cpu(rxd[0]); 268 u32 v2 = le32_to_cpu(rxd[2]); 269 270 fc = cpu_to_le16(FIELD_GET(MT_RXD6_FRAME_CONTROL, v0)); 271 seq_ctrl = FIELD_GET(MT_RXD8_SEQ_CTRL, v2); 272 qos_ctl = FIELD_GET(MT_RXD8_QOS_CTL, v2); 273 274 rxd += 4; 275 if ((u8 *)rxd - skb->data >= skb->len) 276 return -EINVAL; 277 } 278 279 if (rxd1 & MT_RXD1_NORMAL_GROUP_1) { 280 u8 *data = (u8 *)rxd; 281 282 if (status->flag & RX_FLAG_DECRYPTED) { 283 switch (FIELD_GET(MT_RXD1_NORMAL_SEC_MODE, rxd1)) { 284 case MT_CIPHER_AES_CCMP: 285 case MT_CIPHER_CCMP_CCX: 286 case MT_CIPHER_CCMP_256: 287 insert_ccmp_hdr = 288 FIELD_GET(MT_RXD2_NORMAL_FRAG, rxd2); 289 fallthrough; 290 case MT_CIPHER_TKIP: 291 case MT_CIPHER_TKIP_NO_MIC: 292 case MT_CIPHER_GCMP: 293 case MT_CIPHER_GCMP_256: 294 status->iv[0] = data[5]; 295 status->iv[1] = data[4]; 296 status->iv[2] = data[3]; 297 status->iv[3] = data[2]; 298 status->iv[4] = data[1]; 299 status->iv[5] = data[0]; 300 break; 301 default: 302 break; 303 } 304 } 305 rxd += 4; 306 if ((u8 *)rxd - skb->data >= skb->len) 307 return -EINVAL; 308 } 309 310 if (rxd1 & MT_RXD1_NORMAL_GROUP_2) { 311 status->timestamp = le32_to_cpu(rxd[0]); 312 status->flag |= RX_FLAG_MACTIME_START; 313 314 if (!(rxd2 & MT_RXD2_NORMAL_NON_AMPDU)) { 315 status->flag |= RX_FLAG_AMPDU_DETAILS; 316 317 /* all subframes of an A-MPDU have the same timestamp */ 318 if (phy->rx_ampdu_ts != status->timestamp) { 319 if (!++phy->ampdu_ref) 320 phy->ampdu_ref++; 321 } 322 phy->rx_ampdu_ts = status->timestamp; 323 324 status->ampdu_ref = phy->ampdu_ref; 325 } 326 327 rxd += 2; 328 if ((u8 *)rxd - skb->data >= skb->len) 329 return -EINVAL; 330 } 331 332 /* RXD Group 3 - P-RXV */ 333 if (rxd1 & MT_RXD1_NORMAL_GROUP_3) { 334 u32 v0, v1; 335 int ret; 336 337 rxv = rxd; 338 rxd += 2; 339 if ((u8 *)rxd - skb->data >= skb->len) 340 return -EINVAL; 341 342 v0 = le32_to_cpu(rxv[0]); 343 v1 = le32_to_cpu(rxv[1]); 344 345 if (v0 & MT_PRXV_HT_AD_CODE) 346 status->enc_flags |= RX_ENC_FLAG_LDPC; 347 348 ret = mt76_connac2_mac_fill_rx_rate(&dev->mt76, status, sband, 349 rxv, &mode); 350 if (ret < 0) 351 return ret; 352 353 if (rxd1 & MT_RXD1_NORMAL_GROUP_5) { 354 rxd += 6; 355 if ((u8 *)rxd - skb->data >= skb->len) 356 return -EINVAL; 357 358 rxv = rxd; 359 /* Monitor mode would use RCPI described in GROUP 5 360 * instead. 361 */ 362 v1 = le32_to_cpu(rxv[0]); 363 364 rxd += 12; 365 if ((u8 *)rxd - skb->data >= skb->len) 366 return -EINVAL; 367 } 368 369 status->chains = mphy->antenna_mask; 370 status->chain_signal[0] = to_rssi(MT_PRXV_RCPI0, v1); 371 status->chain_signal[1] = to_rssi(MT_PRXV_RCPI1, v1); 372 status->chain_signal[2] = to_rssi(MT_PRXV_RCPI2, v1); 373 status->chain_signal[3] = to_rssi(MT_PRXV_RCPI3, v1); 374 status->signal = -128; 375 for (i = 0; i < hweight8(mphy->antenna_mask); i++) { 376 if (!(status->chains & BIT(i)) || 377 status->chain_signal[i] >= 0) 378 continue; 379 380 status->signal = max(status->signal, 381 status->chain_signal[i]); 382 } 383 } 384 385 amsdu_info = FIELD_GET(MT_RXD4_NORMAL_PAYLOAD_FORMAT, rxd4); 386 status->amsdu = !!amsdu_info; 387 if (status->amsdu) { 388 status->first_amsdu = amsdu_info == MT_RXD4_FIRST_AMSDU_FRAME; 389 status->last_amsdu = amsdu_info == MT_RXD4_LAST_AMSDU_FRAME; 390 } 391 392 hdr_gap = (u8 *)rxd - skb->data + 2 * remove_pad; 393 if (hdr_trans && ieee80211_has_morefrags(fc)) { 394 struct ieee80211_vif *vif; 395 int err; 396 397 if (!msta || !msta->vif) 398 return -EINVAL; 399 400 vif = container_of((void *)msta->vif, struct ieee80211_vif, 401 drv_priv); 402 err = mt76_connac2_reverse_frag0_hdr_trans(vif, skb, hdr_gap); 403 if (err) 404 return err; 405 406 hdr_trans = false; 407 } else { 408 skb_pull(skb, hdr_gap); 409 if (!hdr_trans && status->amsdu) { 410 memmove(skb->data + 2, skb->data, 411 ieee80211_get_hdrlen_from_skb(skb)); 412 skb_pull(skb, 2); 413 } 414 } 415 416 if (!hdr_trans) { 417 struct ieee80211_hdr *hdr; 418 419 if (insert_ccmp_hdr) { 420 u8 key_id = FIELD_GET(MT_RXD1_NORMAL_KEY_ID, rxd1); 421 422 mt76_insert_ccmp_hdr(skb, key_id); 423 } 424 425 hdr = mt76_skb_get_hdr(skb); 426 fc = hdr->frame_control; 427 if (ieee80211_is_data_qos(fc)) { 428 seq_ctrl = le16_to_cpu(hdr->seq_ctrl); 429 qos_ctl = *ieee80211_get_qos_ctl(hdr); 430 } 431 } else { 432 status->flag |= RX_FLAG_8023; 433 } 434 435 mt792x_mac_assoc_rssi(dev, skb); 436 437 if (rxv && mode >= MT_PHY_TYPE_HE_SU && !(status->flag & RX_FLAG_8023)) 438 mt76_connac2_mac_decode_he_radiotap(&dev->mt76, skb, rxv, mode); 439 440 if (!status->wcid || !ieee80211_is_data_qos(fc)) 441 return 0; 442 443 status->aggr = unicast && !ieee80211_is_qos_nullfunc(fc); 444 status->seqno = IEEE80211_SEQ_TO_SN(seq_ctrl); 445 status->qos_ctl = qos_ctl; 446 447 return 0; 448 } 449 450 void mt7921_mac_add_txs(struct mt792x_dev *dev, void *data) 451 { 452 struct mt792x_link_sta *mlink; 453 struct mt76_wcid *wcid; 454 __le32 *txs_data = data; 455 u16 wcidx; 456 u8 pid; 457 458 if (le32_get_bits(txs_data[0], MT_TXS0_TXS_FORMAT) > 1) 459 return; 460 461 wcidx = le32_get_bits(txs_data[2], MT_TXS2_WCID); 462 pid = le32_get_bits(txs_data[3], MT_TXS3_PID); 463 464 if (pid < MT_PACKET_ID_FIRST) 465 return; 466 467 if (wcidx >= MT792x_WTBL_SIZE) 468 return; 469 470 rcu_read_lock(); 471 472 wcid = rcu_dereference(dev->mt76.wcid[wcidx]); 473 if (!wcid) 474 goto out; 475 476 mlink = container_of(wcid, struct mt792x_link_sta, wcid); 477 478 mt76_connac2_mac_add_txs_skb(&dev->mt76, wcid, pid, txs_data); 479 if (!wcid->sta) 480 goto out; 481 482 spin_lock_bh(&dev->mt76.sta_poll_lock); 483 if (list_empty(&mlink->wcid.poll_list)) 484 list_add_tail(&mlink->wcid.poll_list, &dev->mt76.sta_poll_list); 485 spin_unlock_bh(&dev->mt76.sta_poll_lock); 486 487 out: 488 rcu_read_unlock(); 489 } 490 491 static void mt7921_mac_tx_free(struct mt792x_dev *dev, void *data, int len) 492 { 493 struct mt76_connac_tx_free *free = data; 494 __le32 *tx_info = (__le32 *)(data + sizeof(*free)); 495 struct mt76_dev *mdev = &dev->mt76; 496 struct mt76_txwi_cache *txwi; 497 struct ieee80211_sta *sta = NULL; 498 struct mt76_wcid *wcid = NULL; 499 struct sk_buff *skb, *tmp; 500 void *end = data + len; 501 LIST_HEAD(free_list); 502 bool wake = false; 503 u8 i, count; 504 505 /* clean DMA queues and unmap buffers first */ 506 mt76_queue_tx_cleanup(dev, dev->mphy.q_tx[MT_TXQ_PSD], false); 507 mt76_queue_tx_cleanup(dev, dev->mphy.q_tx[MT_TXQ_BE], false); 508 509 count = le16_get_bits(free->ctrl, MT_TX_FREE_MSDU_CNT); 510 if (WARN_ON_ONCE((void *)&tx_info[count] > end)) 511 return; 512 513 for (i = 0; i < count; i++) { 514 u32 msdu, info = le32_to_cpu(tx_info[i]); 515 u8 stat; 516 517 /* 1'b1: new wcid pair. 518 * 1'b0: msdu_id with the same 'wcid pair' as above. 519 */ 520 if (info & MT_TX_FREE_PAIR) { 521 struct mt792x_link_sta *mlink; 522 u16 idx; 523 524 count++; 525 idx = FIELD_GET(MT_TX_FREE_WLAN_ID, info); 526 wcid = rcu_dereference(dev->mt76.wcid[idx]); 527 sta = wcid_to_sta(wcid); 528 if (!sta) 529 continue; 530 531 mlink = container_of(wcid, struct mt792x_link_sta, wcid); 532 spin_lock_bh(&mdev->sta_poll_lock); 533 if (list_empty(&mlink->wcid.poll_list)) 534 list_add_tail(&mlink->wcid.poll_list, 535 &mdev->sta_poll_list); 536 spin_unlock_bh(&mdev->sta_poll_lock); 537 continue; 538 } 539 540 msdu = FIELD_GET(MT_TX_FREE_MSDU_ID, info); 541 stat = FIELD_GET(MT_TX_FREE_STATUS, info); 542 543 if (wcid) { 544 wcid->stats.tx_retries += 545 FIELD_GET(MT_TX_FREE_COUNT, info) - 1; 546 wcid->stats.tx_failed += !!stat; 547 } 548 549 txwi = mt76_token_release(mdev, msdu, &wake); 550 if (!txwi) 551 continue; 552 553 mt76_connac2_txwi_free(mdev, txwi, sta, &free_list); 554 } 555 556 if (wake) 557 mt76_set_tx_blocked(&dev->mt76, false); 558 559 list_for_each_entry_safe(skb, tmp, &free_list, list) { 560 skb_list_del_init(skb); 561 napi_consume_skb(skb, 1); 562 } 563 564 rcu_read_lock(); 565 mt7921_mac_sta_poll(dev); 566 rcu_read_unlock(); 567 568 mt76_worker_schedule(&dev->mt76.tx_worker); 569 } 570 571 bool mt7921_rx_check(struct mt76_dev *mdev, void *data, int len) 572 { 573 struct mt792x_dev *dev = container_of(mdev, struct mt792x_dev, mt76); 574 __le32 *rxd = (__le32 *)data; 575 __le32 *end = (__le32 *)&rxd[len / 4]; 576 enum rx_pkt_type type; 577 578 type = le32_get_bits(rxd[0], MT_RXD0_PKT_TYPE); 579 580 switch (type) { 581 case PKT_TYPE_TXRX_NOTIFY: 582 /* PKT_TYPE_TXRX_NOTIFY can be received only by mmio devices */ 583 mt7921_mac_tx_free(dev, data, len); /* mmio */ 584 return false; 585 case PKT_TYPE_TXS: 586 for (rxd += 2; rxd + 8 <= end; rxd += 8) 587 mt7921_mac_add_txs(dev, rxd); 588 return false; 589 default: 590 return true; 591 } 592 } 593 EXPORT_SYMBOL_GPL(mt7921_rx_check); 594 595 void mt7921_queue_rx_skb(struct mt76_dev *mdev, enum mt76_rxq_id q, 596 struct sk_buff *skb, u32 *info) 597 { 598 struct mt792x_dev *dev = container_of(mdev, struct mt792x_dev, mt76); 599 __le32 *rxd = (__le32 *)skb->data; 600 __le32 *end = (__le32 *)&skb->data[skb->len]; 601 enum rx_pkt_type type; 602 u16 flag; 603 604 type = le32_get_bits(rxd[0], MT_RXD0_PKT_TYPE); 605 flag = le32_get_bits(rxd[0], MT_RXD0_PKT_FLAG); 606 607 if (type == PKT_TYPE_RX_EVENT && flag == 0x1) 608 type = PKT_TYPE_NORMAL_MCU; 609 610 switch (type) { 611 case PKT_TYPE_TXRX_NOTIFY: 612 /* PKT_TYPE_TXRX_NOTIFY can be received only by mmio devices */ 613 mt7921_mac_tx_free(dev, skb->data, skb->len); 614 napi_consume_skb(skb, 1); 615 break; 616 case PKT_TYPE_RX_EVENT: 617 mt7921_mcu_rx_event(dev, skb); 618 break; 619 case PKT_TYPE_TXS: 620 for (rxd += 2; rxd + 8 <= end; rxd += 8) 621 mt7921_mac_add_txs(dev, rxd); 622 dev_kfree_skb(skb); 623 break; 624 case PKT_TYPE_NORMAL_MCU: 625 case PKT_TYPE_NORMAL: 626 if (!mt7921_mac_fill_rx(dev, skb)) { 627 mt76_rx(&dev->mt76, q, skb); 628 return; 629 } 630 fallthrough; 631 default: 632 dev_kfree_skb(skb); 633 break; 634 } 635 } 636 EXPORT_SYMBOL_GPL(mt7921_queue_rx_skb); 637 638 static void 639 mt7921_vif_connect_iter(void *priv, u8 *mac, 640 struct ieee80211_vif *vif) 641 { 642 struct mt792x_vif *mvif = (struct mt792x_vif *)vif->drv_priv; 643 struct mt792x_dev *dev = mvif->phy->dev; 644 struct ieee80211_hw *hw = mt76_hw(dev); 645 646 if (vif->type == NL80211_IFTYPE_STATION) 647 ieee80211_disconnect(vif, true); 648 649 mt76_connac_mcu_uni_add_dev(&dev->mphy, &vif->bss_conf, 650 &mvif->sta.deflink.wcid, true); 651 mt7921_mcu_set_tx(dev, vif); 652 653 if (vif->type == NL80211_IFTYPE_AP) { 654 mt76_connac_mcu_uni_add_bss(dev->phy.mt76, vif, &mvif->sta.deflink.wcid, 655 true, NULL); 656 mt7921_mcu_sta_update(dev, NULL, vif, true, 657 MT76_STA_INFO_STATE_NONE); 658 mt7921_mcu_uni_add_beacon_offload(dev, hw, vif, true); 659 } 660 } 661 662 /* system error recovery */ 663 void mt7921_mac_reset_work(struct work_struct *work) 664 { 665 struct mt792x_dev *dev = container_of(work, struct mt792x_dev, 666 reset_work); 667 struct ieee80211_hw *hw = mt76_hw(dev); 668 struct mt76_connac_pm *pm = &dev->pm; 669 int i, ret; 670 671 dev_dbg(dev->mt76.dev, "chip reset\n"); 672 set_bit(MT76_RESET, &dev->mphy.state); 673 dev->hw_full_reset = true; 674 ieee80211_stop_queues(hw); 675 676 cancel_delayed_work_sync(&dev->mphy.mac_work); 677 cancel_delayed_work_sync(&pm->ps_work); 678 cancel_work_sync(&pm->wake_work); 679 680 for (i = 0; i < 10; i++) { 681 mutex_lock(&dev->mt76.mutex); 682 ret = mt792x_dev_reset(dev); 683 mutex_unlock(&dev->mt76.mutex); 684 685 if (!ret) 686 break; 687 } 688 689 if (i == 10) 690 dev_err(dev->mt76.dev, "chip reset failed\n"); 691 692 if (test_and_clear_bit(MT76_HW_SCANNING, &dev->mphy.state)) { 693 struct cfg80211_scan_info info = { 694 .aborted = true, 695 }; 696 697 ieee80211_scan_completed(dev->mphy.hw, &info); 698 } 699 700 dev->hw_full_reset = false; 701 clear_bit(MT76_RESET, &dev->mphy.state); 702 pm->suspended = false; 703 ieee80211_wake_queues(hw); 704 ieee80211_iterate_active_interfaces(hw, 705 IEEE80211_IFACE_ITER_RESUME_ALL, 706 mt7921_vif_connect_iter, NULL); 707 mt76_connac_power_save_sched(&dev->mt76.phy, pm); 708 } 709 710 void mt7921_coredump_work(struct work_struct *work) 711 { 712 struct mt792x_dev *dev; 713 char *dump, *data; 714 715 dev = (struct mt792x_dev *)container_of(work, struct mt792x_dev, 716 coredump.work.work); 717 718 if (time_is_after_jiffies(dev->coredump.last_activity + 719 4 * MT76_CONNAC_COREDUMP_TIMEOUT)) { 720 queue_delayed_work(dev->mt76.wq, &dev->coredump.work, 721 MT76_CONNAC_COREDUMP_TIMEOUT); 722 return; 723 } 724 725 dump = vzalloc(MT76_CONNAC_COREDUMP_SZ); 726 data = dump; 727 728 while (true) { 729 struct sk_buff *skb; 730 731 spin_lock_bh(&dev->mt76.lock); 732 skb = __skb_dequeue(&dev->coredump.msg_list); 733 spin_unlock_bh(&dev->mt76.lock); 734 735 if (!skb) 736 break; 737 738 skb_pull(skb, sizeof(struct mt76_connac2_mcu_rxd)); 739 if (!dump || data + skb->len - dump > MT76_CONNAC_COREDUMP_SZ) { 740 dev_kfree_skb(skb); 741 continue; 742 } 743 744 memcpy(data, skb->data, skb->len); 745 data += skb->len; 746 747 dev_kfree_skb(skb); 748 } 749 750 if (dump) 751 dev_coredumpv(dev->mt76.dev, dump, MT76_CONNAC_COREDUMP_SZ, 752 GFP_KERNEL); 753 754 mt792x_reset(&dev->mt76); 755 } 756 757 /* usb_sdio */ 758 static void 759 mt7921_usb_sdio_write_txwi(struct mt792x_dev *dev, struct mt76_wcid *wcid, 760 enum mt76_txq_id qid, struct ieee80211_sta *sta, 761 struct ieee80211_key_conf *key, int pid, 762 struct sk_buff *skb) 763 { 764 __le32 *txwi = (__le32 *)(skb->data - MT_SDIO_TXD_SIZE); 765 766 memset(txwi, 0, MT_SDIO_TXD_SIZE); 767 mt76_connac2_mac_write_txwi(&dev->mt76, txwi, skb, wcid, key, pid, qid, 0); 768 skb_push(skb, MT_SDIO_TXD_SIZE); 769 } 770 771 int mt7921_usb_sdio_tx_prepare_skb(struct mt76_dev *mdev, void *txwi_ptr, 772 enum mt76_txq_id qid, struct mt76_wcid *wcid, 773 struct ieee80211_sta *sta, 774 struct mt76_tx_info *tx_info) 775 { 776 struct mt792x_dev *dev = container_of(mdev, struct mt792x_dev, mt76); 777 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_info->skb); 778 struct ieee80211_key_conf *key = info->control.hw_key; 779 struct sk_buff *skb = tx_info->skb; 780 int err, pad, pktid, type; 781 782 if (unlikely(tx_info->skb->len <= ETH_HLEN)) 783 return -EINVAL; 784 785 err = skb_cow_head(skb, MT_SDIO_TXD_SIZE + MT_SDIO_HDR_SIZE); 786 if (err) 787 return err; 788 789 if (!wcid) 790 wcid = &dev->mt76.global_wcid; 791 792 if (sta) { 793 struct mt792x_sta *msta = (struct mt792x_sta *)sta->drv_priv; 794 795 if (time_after(jiffies, msta->deflink.last_txs + HZ / 4)) { 796 info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS; 797 msta->deflink.last_txs = jiffies; 798 } 799 } 800 801 pktid = mt76_tx_status_skb_add(&dev->mt76, wcid, skb); 802 mt7921_usb_sdio_write_txwi(dev, wcid, qid, sta, key, pktid, skb); 803 804 type = mt76_is_sdio(mdev) ? MT7921_SDIO_DATA : 0; 805 mt792x_skb_add_usb_sdio_hdr(dev, skb, type); 806 pad = round_up(skb->len, 4) - skb->len; 807 if (mt76_is_usb(mdev)) 808 pad += 4; 809 810 err = mt76_skb_adjust_pad(skb, pad); 811 if (err) 812 /* Release pktid in case of error. */ 813 idr_remove(&wcid->pktid, pktid); 814 815 return err; 816 } 817 EXPORT_SYMBOL_GPL(mt7921_usb_sdio_tx_prepare_skb); 818 819 void mt7921_usb_sdio_tx_complete_skb(struct mt76_dev *mdev, 820 struct mt76_queue_entry *e) 821 { 822 __le32 *txwi = (__le32 *)(e->skb->data + MT_SDIO_HDR_SIZE); 823 unsigned int headroom = MT_SDIO_TXD_SIZE + MT_SDIO_HDR_SIZE; 824 struct ieee80211_sta *sta; 825 struct mt76_wcid *wcid; 826 u16 idx; 827 828 idx = le32_get_bits(txwi[1], MT_TXD1_WLAN_IDX); 829 wcid = rcu_dereference(mdev->wcid[idx]); 830 sta = wcid_to_sta(wcid); 831 832 if (sta && likely(e->skb->protocol != cpu_to_be16(ETH_P_PAE))) 833 mt76_connac2_tx_check_aggr(sta, txwi); 834 835 skb_pull(e->skb, headroom); 836 mt76_tx_complete_skb(mdev, e->wcid, e->skb); 837 } 838 EXPORT_SYMBOL_GPL(mt7921_usb_sdio_tx_complete_skb); 839 840 bool mt7921_usb_sdio_tx_status_data(struct mt76_dev *mdev, u8 *update) 841 { 842 struct mt792x_dev *dev = container_of(mdev, struct mt792x_dev, mt76); 843 844 mt792x_mutex_acquire(dev); 845 mt7921_mac_sta_poll(dev); 846 mt792x_mutex_release(dev); 847 848 return false; 849 } 850 EXPORT_SYMBOL_GPL(mt7921_usb_sdio_tx_status_data); 851 852 #if IS_ENABLED(CONFIG_IPV6) 853 void mt7921_set_ipv6_ns_work(struct work_struct *work) 854 { 855 struct mt792x_dev *dev = container_of(work, struct mt792x_dev, 856 ipv6_ns_work); 857 struct sk_buff *skb; 858 int ret = 0; 859 860 do { 861 skb = skb_dequeue(&dev->ipv6_ns_list); 862 863 if (!skb) 864 break; 865 866 mt792x_mutex_acquire(dev); 867 ret = mt76_mcu_skb_send_msg(&dev->mt76, skb, 868 MCU_UNI_CMD(OFFLOAD), true); 869 mt792x_mutex_release(dev); 870 871 } while (!ret); 872 873 if (ret) 874 skb_queue_purge(&dev->ipv6_ns_list); 875 } 876 #endif 877