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1// SPDX-License-Identifier: ISC2/* 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 713#define MT_WTBL_TXRX_RATE_G2_HE 2414#define MT_WTBL_TXRX_RATE_G2 1215 16#define MT_WTBL_AC0_CTT_OFFSET 2017 18bool 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 27static u32 mt7921_mac_wtbl_lmac_addr(int idx, u8 offset)28{29 return MT_WTBL_LMAC_OFFS(idx, 0) + offset * 4;30}31 32static 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] = 639 };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 GI117 * 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 else148 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 167static int168mt7921_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 5360 * 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 450void 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 487out:488 rcu_read_unlock();489}490 491static 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 571bool 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}593EXPORT_SYMBOL_GPL(mt7921_rx_check);594 595void 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}636EXPORT_SYMBOL_GPL(mt7921_queue_rx_skb);637 638static void639mt7921_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 */663void 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 710void 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 */758static void759mt7921_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 771int 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}817EXPORT_SYMBOL_GPL(mt7921_usb_sdio_tx_prepare_skb);818 819void 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}838EXPORT_SYMBOL_GPL(mt7921_usb_sdio_tx_complete_skb);839 840bool 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}850EXPORT_SYMBOL_GPL(mt7921_usb_sdio_tx_status_data);851 852#if IS_ENABLED(CONFIG_IPV6)853void 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#endif877