// SPDX-License-Identifier: ISC /* Copyright (C) 2020 MediaTek Inc. */ #include #include #include #include "mt7921.h" #include "../dma.h" #include "mac.h" #include "mcu.h" #define HE_BITS(f) cpu_to_le16(IEEE80211_RADIOTAP_HE_##f) #define HE_PREP(f, m, v) le16_encode_bits(le32_get_bits(v, MT_CRXV_HE_##m),\ IEEE80211_RADIOTAP_HE_##f) static struct mt76_wcid *mt7921_rx_get_wcid(struct mt7921_dev *dev, u16 idx, bool unicast) { struct mt7921_sta *sta; struct mt76_wcid *wcid; if (idx >= ARRAY_SIZE(dev->mt76.wcid)) return NULL; wcid = rcu_dereference(dev->mt76.wcid[idx]); if (unicast || !wcid) return wcid; if (!wcid->sta) return NULL; sta = container_of(wcid, struct mt7921_sta, wcid); if (!sta->vif) return NULL; return &sta->vif->sta.wcid; } void mt7921_sta_ps(struct mt76_dev *mdev, struct ieee80211_sta *sta, bool ps) { } EXPORT_SYMBOL_GPL(mt7921_sta_ps); bool mt7921_mac_wtbl_update(struct mt7921_dev *dev, int idx, u32 mask) { mt76_rmw(dev, MT_WTBL_UPDATE, MT_WTBL_UPDATE_WLAN_IDX, FIELD_PREP(MT_WTBL_UPDATE_WLAN_IDX, idx) | mask); return mt76_poll(dev, MT_WTBL_UPDATE, MT_WTBL_UPDATE_BUSY, 0, 5000); } void mt7921_mac_sta_poll(struct mt7921_dev *dev) { static const u8 ac_to_tid[] = { [IEEE80211_AC_BE] = 0, [IEEE80211_AC_BK] = 1, [IEEE80211_AC_VI] = 4, [IEEE80211_AC_VO] = 6 }; struct ieee80211_sta *sta; struct mt7921_sta *msta; u32 tx_time[IEEE80211_NUM_ACS], rx_time[IEEE80211_NUM_ACS]; LIST_HEAD(sta_poll_list); struct rate_info *rate; int i; spin_lock_bh(&dev->sta_poll_lock); list_splice_init(&dev->sta_poll_list, &sta_poll_list); spin_unlock_bh(&dev->sta_poll_lock); while (true) { bool clear = false; u32 addr, val; u16 idx; u8 bw; spin_lock_bh(&dev->sta_poll_lock); if (list_empty(&sta_poll_list)) { spin_unlock_bh(&dev->sta_poll_lock); break; } msta = list_first_entry(&sta_poll_list, struct mt7921_sta, poll_list); list_del_init(&msta->poll_list); spin_unlock_bh(&dev->sta_poll_lock); idx = msta->wcid.idx; addr = mt7921_mac_wtbl_lmac_addr(idx, MT_WTBL_AC0_CTT_OFFSET); for (i = 0; i < IEEE80211_NUM_ACS; i++) { u32 tx_last = msta->airtime_ac[i]; u32 rx_last = msta->airtime_ac[i + 4]; msta->airtime_ac[i] = mt76_rr(dev, addr); msta->airtime_ac[i + 4] = mt76_rr(dev, addr + 4); tx_time[i] = msta->airtime_ac[i] - tx_last; rx_time[i] = msta->airtime_ac[i + 4] - rx_last; if ((tx_last | rx_last) & BIT(30)) clear = true; addr += 8; } if (clear) { mt7921_mac_wtbl_update(dev, idx, MT_WTBL_UPDATE_ADM_COUNT_CLEAR); memset(msta->airtime_ac, 0, sizeof(msta->airtime_ac)); } if (!msta->wcid.sta) continue; sta = container_of((void *)msta, struct ieee80211_sta, drv_priv); for (i = 0; i < IEEE80211_NUM_ACS; i++) { u8 q = mt76_connac_lmac_mapping(i); u32 tx_cur = tx_time[q]; u32 rx_cur = rx_time[q]; u8 tid = ac_to_tid[i]; if (!tx_cur && !rx_cur) continue; ieee80211_sta_register_airtime(sta, tid, tx_cur, rx_cur); } /* We don't support reading GI info from txs packets. * For accurate tx status reporting and AQL improvement, * we need to make sure that flags match so polling GI * from per-sta counters directly. */ rate = &msta->wcid.rate; addr = mt7921_mac_wtbl_lmac_addr(idx, MT_WTBL_TXRX_CAP_RATE_OFFSET); val = mt76_rr(dev, addr); switch (rate->bw) { case RATE_INFO_BW_160: bw = IEEE80211_STA_RX_BW_160; break; case RATE_INFO_BW_80: bw = IEEE80211_STA_RX_BW_80; break; case RATE_INFO_BW_40: bw = IEEE80211_STA_RX_BW_40; break; default: bw = IEEE80211_STA_RX_BW_20; break; } if (rate->flags & RATE_INFO_FLAGS_HE_MCS) { u8 offs = MT_WTBL_TXRX_RATE_G2_HE + 2 * bw; rate->he_gi = (val & (0x3 << offs)) >> offs; } else if (rate->flags & (RATE_INFO_FLAGS_VHT_MCS | RATE_INFO_FLAGS_MCS)) { if (val & BIT(MT_WTBL_TXRX_RATE_G2 + bw)) rate->flags |= RATE_INFO_FLAGS_SHORT_GI; else rate->flags &= ~RATE_INFO_FLAGS_SHORT_GI; } } } EXPORT_SYMBOL_GPL(mt7921_mac_sta_poll); static void mt7921_mac_decode_he_radiotap_ru(struct mt76_rx_status *status, struct ieee80211_radiotap_he *he, __le32 *rxv) { u32 ru_h, ru_l; u8 ru, offs = 0; ru_l = le32_get_bits(rxv[0], MT_PRXV_HE_RU_ALLOC_L); ru_h = le32_get_bits(rxv[1], MT_PRXV_HE_RU_ALLOC_H); ru = (u8)(ru_l | ru_h << 4); status->bw = RATE_INFO_BW_HE_RU; switch (ru) { case 0 ... 36: status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_26; offs = ru; break; case 37 ... 52: status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_52; offs = ru - 37; break; case 53 ... 60: status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_106; offs = ru - 53; break; case 61 ... 64: status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_242; offs = ru - 61; break; case 65 ... 66: status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_484; offs = ru - 65; break; case 67: status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_996; break; case 68: status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_2x996; break; } he->data1 |= HE_BITS(DATA1_BW_RU_ALLOC_KNOWN); he->data2 |= HE_BITS(DATA2_RU_OFFSET_KNOWN) | le16_encode_bits(offs, IEEE80211_RADIOTAP_HE_DATA2_RU_OFFSET); } static void mt7921_mac_decode_he_mu_radiotap(struct sk_buff *skb, __le32 *rxv) { struct mt76_rx_status *status = (struct mt76_rx_status *)skb->cb; static const struct ieee80211_radiotap_he_mu mu_known = { .flags1 = HE_BITS(MU_FLAGS1_SIG_B_MCS_KNOWN) | HE_BITS(MU_FLAGS1_SIG_B_DCM_KNOWN) | HE_BITS(MU_FLAGS1_CH1_RU_KNOWN) | HE_BITS(MU_FLAGS1_SIG_B_SYMS_USERS_KNOWN) | HE_BITS(MU_FLAGS1_SIG_B_COMP_KNOWN), .flags2 = HE_BITS(MU_FLAGS2_BW_FROM_SIG_A_BW_KNOWN) | HE_BITS(MU_FLAGS2_PUNC_FROM_SIG_A_BW_KNOWN), }; struct ieee80211_radiotap_he_mu *he_mu; status->flag |= RX_FLAG_RADIOTAP_HE_MU; he_mu = skb_push(skb, sizeof(mu_known)); memcpy(he_mu, &mu_known, sizeof(mu_known)); #define MU_PREP(f, v) le16_encode_bits(v, IEEE80211_RADIOTAP_HE_MU_##f) he_mu->flags1 |= MU_PREP(FLAGS1_SIG_B_MCS, status->rate_idx); if (status->he_dcm) he_mu->flags1 |= MU_PREP(FLAGS1_SIG_B_DCM, status->he_dcm); he_mu->flags2 |= MU_PREP(FLAGS2_BW_FROM_SIG_A_BW, status->bw) | MU_PREP(FLAGS2_SIG_B_SYMS_USERS, le32_get_bits(rxv[2], MT_CRXV_HE_NUM_USER)); he_mu->ru_ch1[0] = le32_get_bits(rxv[3], MT_CRXV_HE_RU0); if (status->bw >= RATE_INFO_BW_40) { he_mu->flags1 |= HE_BITS(MU_FLAGS1_CH2_RU_KNOWN); he_mu->ru_ch2[0] = le32_get_bits(rxv[3], MT_CRXV_HE_RU1); } if (status->bw >= RATE_INFO_BW_80) { he_mu->ru_ch1[1] = le32_get_bits(rxv[3], MT_CRXV_HE_RU2); he_mu->ru_ch2[1] = le32_get_bits(rxv[3], MT_CRXV_HE_RU3); } } static void mt7921_mac_decode_he_radiotap(struct sk_buff *skb, __le32 *rxv, u32 mode) { struct mt76_rx_status *status = (struct mt76_rx_status *)skb->cb; static const struct ieee80211_radiotap_he known = { .data1 = HE_BITS(DATA1_DATA_MCS_KNOWN) | HE_BITS(DATA1_DATA_DCM_KNOWN) | HE_BITS(DATA1_STBC_KNOWN) | HE_BITS(DATA1_CODING_KNOWN) | HE_BITS(DATA1_LDPC_XSYMSEG_KNOWN) | HE_BITS(DATA1_DOPPLER_KNOWN) | HE_BITS(DATA1_SPTL_REUSE_KNOWN) | HE_BITS(DATA1_BSS_COLOR_KNOWN), .data2 = HE_BITS(DATA2_GI_KNOWN) | HE_BITS(DATA2_TXBF_KNOWN) | HE_BITS(DATA2_PE_DISAMBIG_KNOWN) | HE_BITS(DATA2_TXOP_KNOWN), }; struct ieee80211_radiotap_he *he = NULL; u32 ltf_size = le32_get_bits(rxv[2], MT_CRXV_HE_LTF_SIZE) + 1; status->flag |= RX_FLAG_RADIOTAP_HE; he = skb_push(skb, sizeof(known)); memcpy(he, &known, sizeof(known)); he->data3 = HE_PREP(DATA3_BSS_COLOR, BSS_COLOR, rxv[14]) | HE_PREP(DATA3_LDPC_XSYMSEG, LDPC_EXT_SYM, rxv[2]); he->data4 = HE_PREP(DATA4_SU_MU_SPTL_REUSE, SR_MASK, rxv[11]); he->data5 = HE_PREP(DATA5_PE_DISAMBIG, PE_DISAMBIG, rxv[2]) | le16_encode_bits(ltf_size, IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE); if (le32_to_cpu(rxv[0]) & MT_PRXV_TXBF) he->data5 |= HE_BITS(DATA5_TXBF); he->data6 = HE_PREP(DATA6_TXOP, TXOP_DUR, rxv[14]) | HE_PREP(DATA6_DOPPLER, DOPPLER, rxv[14]); switch (mode) { case MT_PHY_TYPE_HE_SU: he->data1 |= HE_BITS(DATA1_FORMAT_SU) | HE_BITS(DATA1_UL_DL_KNOWN) | HE_BITS(DATA1_BEAM_CHANGE_KNOWN) | HE_BITS(DATA1_BW_RU_ALLOC_KNOWN); he->data3 |= HE_PREP(DATA3_BEAM_CHANGE, BEAM_CHNG, rxv[14]) | HE_PREP(DATA3_UL_DL, UPLINK, rxv[2]); break; case MT_PHY_TYPE_HE_EXT_SU: he->data1 |= HE_BITS(DATA1_FORMAT_EXT_SU) | HE_BITS(DATA1_UL_DL_KNOWN) | HE_BITS(DATA1_BW_RU_ALLOC_KNOWN); he->data3 |= HE_PREP(DATA3_UL_DL, UPLINK, rxv[2]); break; case MT_PHY_TYPE_HE_MU: he->data1 |= HE_BITS(DATA1_FORMAT_MU) | HE_BITS(DATA1_UL_DL_KNOWN); he->data3 |= HE_PREP(DATA3_UL_DL, UPLINK, rxv[2]); he->data4 |= HE_PREP(DATA4_MU_STA_ID, MU_AID, rxv[7]); mt7921_mac_decode_he_radiotap_ru(status, he, rxv); mt7921_mac_decode_he_mu_radiotap(skb, rxv); break; case MT_PHY_TYPE_HE_TB: he->data1 |= HE_BITS(DATA1_FORMAT_TRIG) | HE_BITS(DATA1_SPTL_REUSE2_KNOWN) | HE_BITS(DATA1_SPTL_REUSE3_KNOWN) | HE_BITS(DATA1_SPTL_REUSE4_KNOWN); he->data4 |= HE_PREP(DATA4_TB_SPTL_REUSE1, SR_MASK, rxv[11]) | HE_PREP(DATA4_TB_SPTL_REUSE2, SR1_MASK, rxv[11]) | HE_PREP(DATA4_TB_SPTL_REUSE3, SR2_MASK, rxv[11]) | HE_PREP(DATA4_TB_SPTL_REUSE4, SR3_MASK, rxv[11]); mt7921_mac_decode_he_radiotap_ru(status, he, rxv); break; default: break; } } static void mt7921_get_status_freq_info(struct mt7921_dev *dev, struct mt76_phy *mphy, struct mt76_rx_status *status, u8 chfreq) { if (!test_bit(MT76_HW_SCANNING, &mphy->state) && !test_bit(MT76_HW_SCHED_SCANNING, &mphy->state) && !test_bit(MT76_STATE_ROC, &mphy->state)) { status->freq = mphy->chandef.chan->center_freq; status->band = mphy->chandef.chan->band; return; } if (chfreq > 180) { status->band = NL80211_BAND_6GHZ; chfreq = (chfreq - 181) * 4 + 1; } else if (chfreq > 14) { status->band = NL80211_BAND_5GHZ; } else { status->band = NL80211_BAND_2GHZ; } status->freq = ieee80211_channel_to_frequency(chfreq, status->band); } static void mt7921_mac_rssi_iter(void *priv, u8 *mac, struct ieee80211_vif *vif) { struct sk_buff *skb = priv; struct mt76_rx_status *status = (struct mt76_rx_status *)skb->cb; struct mt7921_vif *mvif = (struct mt7921_vif *)vif->drv_priv; struct ieee80211_hdr *hdr = mt76_skb_get_hdr(skb); if (status->signal > 0) return; if (!ether_addr_equal(vif->addr, hdr->addr1)) return; ewma_rssi_add(&mvif->rssi, -status->signal); } static void mt7921_mac_assoc_rssi(struct mt7921_dev *dev, struct sk_buff *skb) { struct ieee80211_hdr *hdr = mt76_skb_get_hdr(skb); if (!ieee80211_is_assoc_resp(hdr->frame_control) && !ieee80211_is_auth(hdr->frame_control)) return; ieee80211_iterate_active_interfaces_atomic(mt76_hw(dev), IEEE80211_IFACE_ITER_RESUME_ALL, mt7921_mac_rssi_iter, skb); } /* The HW does not translate the mac header to 802.3 for mesh point */ static int mt7921_reverse_frag0_hdr_trans(struct sk_buff *skb, u16 hdr_gap) { struct mt76_rx_status *status = (struct mt76_rx_status *)skb->cb; struct ethhdr *eth_hdr = (struct ethhdr *)(skb->data + hdr_gap); struct mt7921_sta *msta = (struct mt7921_sta *)status->wcid; __le32 *rxd = (__le32 *)skb->data; struct ieee80211_sta *sta; struct ieee80211_vif *vif; struct ieee80211_hdr hdr; u16 frame_control; if (le32_get_bits(rxd[3], MT_RXD3_NORMAL_ADDR_TYPE) != MT_RXD3_NORMAL_U2M) return -EINVAL; if (!(le32_to_cpu(rxd[1]) & MT_RXD1_NORMAL_GROUP_4)) return -EINVAL; if (!msta || !msta->vif) return -EINVAL; sta = container_of((void *)msta, struct ieee80211_sta, drv_priv); vif = container_of((void *)msta->vif, struct ieee80211_vif, drv_priv); /* store the info from RXD and ethhdr to avoid being overridden */ frame_control = le32_get_bits(rxd[6], MT_RXD6_FRAME_CONTROL); hdr.frame_control = cpu_to_le16(frame_control); hdr.seq_ctrl = cpu_to_le16(le32_get_bits(rxd[8], MT_RXD8_SEQ_CTRL)); hdr.duration_id = 0; ether_addr_copy(hdr.addr1, vif->addr); ether_addr_copy(hdr.addr2, sta->addr); switch (frame_control & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) { case 0: ether_addr_copy(hdr.addr3, vif->bss_conf.bssid); break; case IEEE80211_FCTL_FROMDS: ether_addr_copy(hdr.addr3, eth_hdr->h_source); break; case IEEE80211_FCTL_TODS: ether_addr_copy(hdr.addr3, eth_hdr->h_dest); break; case IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS: ether_addr_copy(hdr.addr3, eth_hdr->h_dest); ether_addr_copy(hdr.addr4, eth_hdr->h_source); break; default: break; } skb_pull(skb, hdr_gap + sizeof(struct ethhdr) - 2); if (eth_hdr->h_proto == cpu_to_be16(ETH_P_AARP) || eth_hdr->h_proto == cpu_to_be16(ETH_P_IPX)) ether_addr_copy(skb_push(skb, ETH_ALEN), bridge_tunnel_header); else if (be16_to_cpu(eth_hdr->h_proto) >= ETH_P_802_3_MIN) ether_addr_copy(skb_push(skb, ETH_ALEN), rfc1042_header); else skb_pull(skb, 2); if (ieee80211_has_order(hdr.frame_control)) memcpy(skb_push(skb, IEEE80211_HT_CTL_LEN), &rxd[9], IEEE80211_HT_CTL_LEN); if (ieee80211_is_data_qos(hdr.frame_control)) { __le16 qos_ctrl; qos_ctrl = cpu_to_le16(le32_get_bits(rxd[8], MT_RXD8_QOS_CTL)); memcpy(skb_push(skb, IEEE80211_QOS_CTL_LEN), &qos_ctrl, IEEE80211_QOS_CTL_LEN); } if (ieee80211_has_a4(hdr.frame_control)) memcpy(skb_push(skb, sizeof(hdr)), &hdr, sizeof(hdr)); else memcpy(skb_push(skb, sizeof(hdr) - 6), &hdr, sizeof(hdr) - 6); return 0; } static int mt7921_mac_fill_rx(struct mt7921_dev *dev, struct sk_buff *skb) { u32 csum_mask = MT_RXD0_NORMAL_IP_SUM | MT_RXD0_NORMAL_UDP_TCP_SUM; struct mt76_rx_status *status = (struct mt76_rx_status *)skb->cb; bool hdr_trans, unicast, insert_ccmp_hdr = false; u8 chfreq, qos_ctl = 0, remove_pad, amsdu_info; u16 hdr_gap; __le32 *rxv = NULL, *rxd = (__le32 *)skb->data; struct mt76_phy *mphy = &dev->mt76.phy; struct mt7921_phy *phy = &dev->phy; struct ieee80211_supported_band *sband; u32 rxd0 = le32_to_cpu(rxd[0]); u32 rxd1 = le32_to_cpu(rxd[1]); u32 rxd2 = le32_to_cpu(rxd[2]); u32 rxd3 = le32_to_cpu(rxd[3]); u32 rxd4 = le32_to_cpu(rxd[4]); u16 seq_ctrl = 0; __le16 fc = 0; u32 mode = 0; int i, idx; memset(status, 0, sizeof(*status)); if (rxd1 & MT_RXD1_NORMAL_BAND_IDX) return -EINVAL; if (!test_bit(MT76_STATE_RUNNING, &mphy->state)) return -EINVAL; if (rxd2 & MT_RXD2_NORMAL_AMSDU_ERR) return -EINVAL; hdr_trans = rxd2 & MT_RXD2_NORMAL_HDR_TRANS; if (hdr_trans && (rxd1 & MT_RXD1_NORMAL_CM)) return -EINVAL; /* ICV error or CCMP/BIP/WPI MIC error */ if (rxd1 & MT_RXD1_NORMAL_ICV_ERR) status->flag |= RX_FLAG_ONLY_MONITOR; chfreq = FIELD_GET(MT_RXD3_NORMAL_CH_FREQ, rxd3); unicast = FIELD_GET(MT_RXD3_NORMAL_ADDR_TYPE, rxd3) == MT_RXD3_NORMAL_U2M; idx = FIELD_GET(MT_RXD1_NORMAL_WLAN_IDX, rxd1); status->wcid = mt7921_rx_get_wcid(dev, idx, unicast); if (status->wcid) { struct mt7921_sta *msta; msta = container_of(status->wcid, struct mt7921_sta, wcid); spin_lock_bh(&dev->sta_poll_lock); if (list_empty(&msta->poll_list)) list_add_tail(&msta->poll_list, &dev->sta_poll_list); spin_unlock_bh(&dev->sta_poll_lock); } mt7921_get_status_freq_info(dev, mphy, status, chfreq); switch (status->band) { case NL80211_BAND_5GHZ: sband = &mphy->sband_5g.sband; break; case NL80211_BAND_6GHZ: sband = &mphy->sband_6g.sband; break; default: sband = &mphy->sband_2g.sband; break; } if (!sband->channels) return -EINVAL; if ((rxd0 & csum_mask) == csum_mask) skb->ip_summed = CHECKSUM_UNNECESSARY; if (rxd1 & MT_RXD1_NORMAL_FCS_ERR) status->flag |= RX_FLAG_FAILED_FCS_CRC; if (rxd1 & MT_RXD1_NORMAL_TKIP_MIC_ERR) status->flag |= RX_FLAG_MMIC_ERROR; if (FIELD_GET(MT_RXD1_NORMAL_SEC_MODE, rxd1) != 0 && !(rxd1 & (MT_RXD1_NORMAL_CLM | MT_RXD1_NORMAL_CM))) { status->flag |= RX_FLAG_DECRYPTED; status->flag |= RX_FLAG_IV_STRIPPED; status->flag |= RX_FLAG_MMIC_STRIPPED | RX_FLAG_MIC_STRIPPED; } remove_pad = FIELD_GET(MT_RXD2_NORMAL_HDR_OFFSET, rxd2); if (rxd2 & MT_RXD2_NORMAL_MAX_LEN_ERROR) return -EINVAL; rxd += 6; if (rxd1 & MT_RXD1_NORMAL_GROUP_4) { u32 v0 = le32_to_cpu(rxd[0]); u32 v2 = le32_to_cpu(rxd[2]); fc = cpu_to_le16(FIELD_GET(MT_RXD6_FRAME_CONTROL, v0)); seq_ctrl = FIELD_GET(MT_RXD8_SEQ_CTRL, v2); qos_ctl = FIELD_GET(MT_RXD8_QOS_CTL, v2); rxd += 4; if ((u8 *)rxd - skb->data >= skb->len) return -EINVAL; } if (rxd1 & MT_RXD1_NORMAL_GROUP_1) { u8 *data = (u8 *)rxd; if (status->flag & RX_FLAG_DECRYPTED) { switch (FIELD_GET(MT_RXD1_NORMAL_SEC_MODE, rxd1)) { case MT_CIPHER_AES_CCMP: case MT_CIPHER_CCMP_CCX: case MT_CIPHER_CCMP_256: insert_ccmp_hdr = FIELD_GET(MT_RXD2_NORMAL_FRAG, rxd2); fallthrough; case MT_CIPHER_TKIP: case MT_CIPHER_TKIP_NO_MIC: case MT_CIPHER_GCMP: case MT_CIPHER_GCMP_256: status->iv[0] = data[5]; status->iv[1] = data[4]; status->iv[2] = data[3]; status->iv[3] = data[2]; status->iv[4] = data[1]; status->iv[5] = data[0]; break; default: break; } } rxd += 4; if ((u8 *)rxd - skb->data >= skb->len) return -EINVAL; } if (rxd1 & MT_RXD1_NORMAL_GROUP_2) { status->timestamp = le32_to_cpu(rxd[0]); status->flag |= RX_FLAG_MACTIME_START; if (!(rxd2 & MT_RXD2_NORMAL_NON_AMPDU)) { status->flag |= RX_FLAG_AMPDU_DETAILS; /* all subframes of an A-MPDU have the same timestamp */ if (phy->rx_ampdu_ts != status->timestamp) { if (!++phy->ampdu_ref) phy->ampdu_ref++; } phy->rx_ampdu_ts = status->timestamp; status->ampdu_ref = phy->ampdu_ref; } rxd += 2; if ((u8 *)rxd - skb->data >= skb->len) return -EINVAL; } /* RXD Group 3 - P-RXV */ if (rxd1 & MT_RXD1_NORMAL_GROUP_3) { u8 stbc, gi; u32 v0, v1; bool cck; rxv = rxd; rxd += 2; if ((u8 *)rxd - skb->data >= skb->len) return -EINVAL; v0 = le32_to_cpu(rxv[0]); v1 = le32_to_cpu(rxv[1]); if (v0 & MT_PRXV_HT_AD_CODE) status->enc_flags |= RX_ENC_FLAG_LDPC; status->chains = mphy->antenna_mask; status->chain_signal[0] = to_rssi(MT_PRXV_RCPI0, v1); status->chain_signal[1] = to_rssi(MT_PRXV_RCPI1, v1); status->chain_signal[2] = to_rssi(MT_PRXV_RCPI2, v1); status->chain_signal[3] = to_rssi(MT_PRXV_RCPI3, v1); status->signal = -128; for (i = 0; i < hweight8(mphy->antenna_mask); i++) { if (!(status->chains & BIT(i)) || status->chain_signal[i] >= 0) continue; status->signal = max(status->signal, status->chain_signal[i]); } stbc = FIELD_GET(MT_PRXV_STBC, v0); gi = FIELD_GET(MT_PRXV_SGI, v0); cck = false; idx = i = FIELD_GET(MT_PRXV_TX_RATE, v0); mode = FIELD_GET(MT_PRXV_TX_MODE, v0); switch (mode) { case MT_PHY_TYPE_CCK: cck = true; fallthrough; case MT_PHY_TYPE_OFDM: i = mt76_get_rate(&dev->mt76, sband, i, cck); break; case MT_PHY_TYPE_HT_GF: case MT_PHY_TYPE_HT: status->encoding = RX_ENC_HT; if (i > 31) return -EINVAL; break; case MT_PHY_TYPE_VHT: status->nss = FIELD_GET(MT_PRXV_NSTS, v0) + 1; status->encoding = RX_ENC_VHT; if (i > 9) return -EINVAL; break; case MT_PHY_TYPE_HE_MU: case MT_PHY_TYPE_HE_SU: case MT_PHY_TYPE_HE_EXT_SU: case MT_PHY_TYPE_HE_TB: status->nss = FIELD_GET(MT_PRXV_NSTS, v0) + 1; status->encoding = RX_ENC_HE; i &= GENMASK(3, 0); if (gi <= NL80211_RATE_INFO_HE_GI_3_2) status->he_gi = gi; status->he_dcm = !!(idx & MT_PRXV_TX_DCM); break; default: return -EINVAL; } status->rate_idx = i; switch (FIELD_GET(MT_PRXV_FRAME_MODE, v0)) { case IEEE80211_STA_RX_BW_20: break; case IEEE80211_STA_RX_BW_40: if (mode & MT_PHY_TYPE_HE_EXT_SU && (idx & MT_PRXV_TX_ER_SU_106T)) { status->bw = RATE_INFO_BW_HE_RU; status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_106; } else { status->bw = RATE_INFO_BW_40; } break; case IEEE80211_STA_RX_BW_80: status->bw = RATE_INFO_BW_80; break; case IEEE80211_STA_RX_BW_160: status->bw = RATE_INFO_BW_160; break; default: return -EINVAL; } status->enc_flags |= RX_ENC_FLAG_STBC_MASK * stbc; if (mode < MT_PHY_TYPE_HE_SU && gi) status->enc_flags |= RX_ENC_FLAG_SHORT_GI; if (rxd1 & MT_RXD1_NORMAL_GROUP_5) { rxd += 18; if ((u8 *)rxd - skb->data >= skb->len) return -EINVAL; } } amsdu_info = FIELD_GET(MT_RXD4_NORMAL_PAYLOAD_FORMAT, rxd4); status->amsdu = !!amsdu_info; if (status->amsdu) { status->first_amsdu = amsdu_info == MT_RXD4_FIRST_AMSDU_FRAME; status->last_amsdu = amsdu_info == MT_RXD4_LAST_AMSDU_FRAME; } hdr_gap = (u8 *)rxd - skb->data + 2 * remove_pad; if (hdr_trans && ieee80211_has_morefrags(fc)) { if (mt7921_reverse_frag0_hdr_trans(skb, hdr_gap)) return -EINVAL; hdr_trans = false; } else { skb_pull(skb, hdr_gap); if (!hdr_trans && status->amsdu) { memmove(skb->data + 2, skb->data, ieee80211_get_hdrlen_from_skb(skb)); skb_pull(skb, 2); } } if (!hdr_trans) { struct ieee80211_hdr *hdr; if (insert_ccmp_hdr) { u8 key_id = FIELD_GET(MT_RXD1_NORMAL_KEY_ID, rxd1); mt76_insert_ccmp_hdr(skb, key_id); } hdr = mt76_skb_get_hdr(skb); fc = hdr->frame_control; if (ieee80211_is_data_qos(fc)) { seq_ctrl = le16_to_cpu(hdr->seq_ctrl); qos_ctl = *ieee80211_get_qos_ctl(hdr); } } else { status->flag |= RX_FLAG_8023; } mt7921_mac_assoc_rssi(dev, skb); if (rxv && mode >= MT_PHY_TYPE_HE_SU && !(status->flag & RX_FLAG_8023)) mt7921_mac_decode_he_radiotap(skb, rxv, mode); if (!status->wcid || !ieee80211_is_data_qos(fc)) return 0; status->aggr = unicast && !ieee80211_is_qos_nullfunc(fc); status->seqno = IEEE80211_SEQ_TO_SN(seq_ctrl); status->qos_ctl = qos_ctl; return 0; } static void mt7921_mac_write_txwi_8023(struct mt7921_dev *dev, __le32 *txwi, struct sk_buff *skb, struct mt76_wcid *wcid) { u8 tid = skb->priority & IEEE80211_QOS_CTL_TID_MASK; u8 fc_type, fc_stype; bool wmm = false; u32 val; if (wcid->sta) { struct ieee80211_sta *sta; sta = container_of((void *)wcid, struct ieee80211_sta, drv_priv); wmm = sta->wme; } val = FIELD_PREP(MT_TXD1_HDR_FORMAT, MT_HDR_FORMAT_802_3) | FIELD_PREP(MT_TXD1_TID, tid); if (be16_to_cpu(skb->protocol) >= ETH_P_802_3_MIN) val |= MT_TXD1_ETH_802_3; txwi[1] |= cpu_to_le32(val); fc_type = IEEE80211_FTYPE_DATA >> 2; fc_stype = wmm ? IEEE80211_STYPE_QOS_DATA >> 4 : 0; val = FIELD_PREP(MT_TXD2_FRAME_TYPE, fc_type) | FIELD_PREP(MT_TXD2_SUB_TYPE, fc_stype); txwi[2] |= cpu_to_le32(val); val = FIELD_PREP(MT_TXD7_TYPE, fc_type) | FIELD_PREP(MT_TXD7_SUB_TYPE, fc_stype); txwi[7] |= cpu_to_le32(val); } static void mt7921_mac_write_txwi_80211(struct mt7921_dev *dev, __le32 *txwi, struct sk_buff *skb, struct ieee80211_key_conf *key) { struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data; struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); bool multicast = is_multicast_ether_addr(hdr->addr1); u8 tid = skb->priority & IEEE80211_QOS_CTL_TID_MASK; __le16 fc = hdr->frame_control; u8 fc_type, fc_stype; u32 val; if (ieee80211_is_action(fc) && mgmt->u.action.category == WLAN_CATEGORY_BACK && mgmt->u.action.u.addba_req.action_code == WLAN_ACTION_ADDBA_REQ) { u16 capab = le16_to_cpu(mgmt->u.action.u.addba_req.capab); txwi[5] |= cpu_to_le32(MT_TXD5_ADD_BA); tid = (capab >> 2) & IEEE80211_QOS_CTL_TID_MASK; } else if (ieee80211_is_back_req(hdr->frame_control)) { struct ieee80211_bar *bar = (struct ieee80211_bar *)hdr; u16 control = le16_to_cpu(bar->control); tid = FIELD_GET(IEEE80211_BAR_CTRL_TID_INFO_MASK, control); } val = FIELD_PREP(MT_TXD1_HDR_FORMAT, MT_HDR_FORMAT_802_11) | FIELD_PREP(MT_TXD1_HDR_INFO, ieee80211_get_hdrlen_from_skb(skb) / 2) | FIELD_PREP(MT_TXD1_TID, tid); txwi[1] |= cpu_to_le32(val); fc_type = (le16_to_cpu(fc) & IEEE80211_FCTL_FTYPE) >> 2; fc_stype = (le16_to_cpu(fc) & IEEE80211_FCTL_STYPE) >> 4; val = FIELD_PREP(MT_TXD2_FRAME_TYPE, fc_type) | FIELD_PREP(MT_TXD2_SUB_TYPE, fc_stype) | FIELD_PREP(MT_TXD2_MULTICAST, multicast); if (key && multicast && ieee80211_is_robust_mgmt_frame(skb) && key->cipher == WLAN_CIPHER_SUITE_AES_CMAC) { val |= MT_TXD2_BIP; txwi[3] &= ~cpu_to_le32(MT_TXD3_PROTECT_FRAME); } if (!ieee80211_is_data(fc) || multicast || info->flags & IEEE80211_TX_CTL_USE_MINRATE) val |= MT_TXD2_FIX_RATE; txwi[2] |= cpu_to_le32(val); if (ieee80211_is_beacon(fc)) { txwi[3] &= ~cpu_to_le32(MT_TXD3_SW_POWER_MGMT); txwi[3] |= cpu_to_le32(MT_TXD3_REM_TX_COUNT); } if (info->flags & IEEE80211_TX_CTL_INJECTED) { u16 seqno = le16_to_cpu(hdr->seq_ctrl); if (ieee80211_is_back_req(hdr->frame_control)) { struct ieee80211_bar *bar; bar = (struct ieee80211_bar *)skb->data; seqno = le16_to_cpu(bar->start_seq_num); } val = MT_TXD3_SN_VALID | FIELD_PREP(MT_TXD3_SEQ, IEEE80211_SEQ_TO_SN(seqno)); txwi[3] |= cpu_to_le32(val); txwi[7] &= ~cpu_to_le32(MT_TXD7_HW_AMSDU); } if (mt76_is_mmio(&dev->mt76)) { val = FIELD_PREP(MT_TXD7_TYPE, fc_type) | FIELD_PREP(MT_TXD7_SUB_TYPE, fc_stype); txwi[7] |= cpu_to_le32(val); } else { val = FIELD_PREP(MT_TXD8_L_TYPE, fc_type) | FIELD_PREP(MT_TXD8_L_SUB_TYPE, fc_stype); txwi[8] |= cpu_to_le32(val); } } void mt7921_mac_write_txwi(struct mt7921_dev *dev, __le32 *txwi, struct sk_buff *skb, struct mt76_wcid *wcid, struct ieee80211_key_conf *key, int pid, bool beacon) { struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); struct ieee80211_vif *vif = info->control.vif; struct mt76_phy *mphy = &dev->mphy; u8 p_fmt, q_idx, omac_idx = 0, wmm_idx = 0; bool is_mmio = mt76_is_mmio(&dev->mt76); u32 sz_txd = is_mmio ? MT_TXD_SIZE : MT_SDIO_TXD_SIZE; bool is_8023 = info->flags & IEEE80211_TX_CTL_HW_80211_ENCAP; u16 tx_count = 15; u32 val; if (vif) { struct mt76_vif *mvif = (struct mt76_vif *)vif->drv_priv; omac_idx = mvif->omac_idx; wmm_idx = mvif->wmm_idx; } if (beacon) { p_fmt = MT_TX_TYPE_FW; q_idx = MT_LMAC_BCN0; } else if (skb_get_queue_mapping(skb) >= MT_TXQ_PSD) { p_fmt = is_mmio ? MT_TX_TYPE_CT : MT_TX_TYPE_SF; q_idx = MT_LMAC_ALTX0; } else { p_fmt = is_mmio ? MT_TX_TYPE_CT : MT_TX_TYPE_SF; q_idx = wmm_idx * MT7921_MAX_WMM_SETS + mt76_connac_lmac_mapping(skb_get_queue_mapping(skb)); } val = FIELD_PREP(MT_TXD0_TX_BYTES, skb->len + sz_txd) | FIELD_PREP(MT_TXD0_PKT_FMT, p_fmt) | FIELD_PREP(MT_TXD0_Q_IDX, q_idx); txwi[0] = cpu_to_le32(val); val = MT_TXD1_LONG_FORMAT | FIELD_PREP(MT_TXD1_WLAN_IDX, wcid->idx) | FIELD_PREP(MT_TXD1_OWN_MAC, omac_idx); txwi[1] = cpu_to_le32(val); txwi[2] = 0; val = FIELD_PREP(MT_TXD3_REM_TX_COUNT, tx_count); if (key) val |= MT_TXD3_PROTECT_FRAME; if (info->flags & IEEE80211_TX_CTL_NO_ACK) val |= MT_TXD3_NO_ACK; txwi[3] = cpu_to_le32(val); txwi[4] = 0; val = FIELD_PREP(MT_TXD5_PID, pid); if (pid >= MT_PACKET_ID_FIRST) val |= MT_TXD5_TX_STATUS_HOST; txwi[5] = cpu_to_le32(val); txwi[6] = 0; txwi[7] = wcid->amsdu ? cpu_to_le32(MT_TXD7_HW_AMSDU) : 0; if (is_8023) mt7921_mac_write_txwi_8023(dev, txwi, skb, wcid); else mt7921_mac_write_txwi_80211(dev, txwi, skb, key); if (txwi[2] & cpu_to_le32(MT_TXD2_FIX_RATE)) { int rateidx = vif ? ffs(vif->bss_conf.basic_rates) - 1 : 0; u16 rate, mode; /* hardware won't add HTC for mgmt/ctrl frame */ txwi[2] |= cpu_to_le32(MT_TXD2_HTC_VLD); rate = mt76_calculate_default_rate(mphy, rateidx); mode = rate >> 8; rate &= GENMASK(7, 0); rate |= FIELD_PREP(MT_TX_RATE_MODE, mode); val = MT_TXD6_FIXED_BW | FIELD_PREP(MT_TXD6_TX_RATE, rate); txwi[6] |= cpu_to_le32(val); txwi[3] |= cpu_to_le32(MT_TXD3_BA_DISABLE); } } EXPORT_SYMBOL_GPL(mt7921_mac_write_txwi); void mt7921_tx_check_aggr(struct ieee80211_sta *sta, __le32 *txwi) { struct mt7921_sta *msta; u16 fc, tid; u32 val; if (!sta || !(sta->ht_cap.ht_supported || sta->he_cap.has_he)) return; tid = le32_get_bits(txwi[1], MT_TXD1_TID); if (tid >= 6) /* skip VO queue */ return; val = le32_to_cpu(txwi[2]); fc = FIELD_GET(MT_TXD2_FRAME_TYPE, val) << 2 | FIELD_GET(MT_TXD2_SUB_TYPE, val) << 4; if (unlikely(fc != (IEEE80211_FTYPE_DATA | IEEE80211_STYPE_QOS_DATA))) return; msta = (struct mt7921_sta *)sta->drv_priv; if (!test_and_set_bit(tid, &msta->ampdu_state)) ieee80211_start_tx_ba_session(sta, tid, 0); } EXPORT_SYMBOL_GPL(mt7921_tx_check_aggr); static bool mt7921_mac_add_txs_skb(struct mt7921_dev *dev, struct mt76_wcid *wcid, int pid, __le32 *txs_data) { struct mt7921_sta *msta = container_of(wcid, struct mt7921_sta, wcid); struct mt76_sta_stats *stats = &msta->stats; struct ieee80211_supported_band *sband; struct mt76_dev *mdev = &dev->mt76; struct ieee80211_tx_info *info; struct rate_info rate = {}; struct sk_buff_head list; u32 txrate, txs, mode; struct sk_buff *skb; bool cck = false; mt76_tx_status_lock(mdev, &list); skb = mt76_tx_status_skb_get(mdev, wcid, pid, &list); if (!skb) goto out; info = IEEE80211_SKB_CB(skb); txs = le32_to_cpu(txs_data[0]); if (!(txs & MT_TXS0_ACK_ERROR_MASK)) info->flags |= IEEE80211_TX_STAT_ACK; info->status.ampdu_len = 1; info->status.ampdu_ack_len = !!(info->flags & IEEE80211_TX_STAT_ACK); info->status.rates[0].idx = -1; if (!wcid->sta) goto out; txrate = FIELD_GET(MT_TXS0_TX_RATE, txs); rate.mcs = FIELD_GET(MT_TX_RATE_IDX, txrate); rate.nss = FIELD_GET(MT_TX_RATE_NSS, txrate) + 1; if (rate.nss - 1 < ARRAY_SIZE(stats->tx_nss)) stats->tx_nss[rate.nss - 1]++; if (rate.mcs < ARRAY_SIZE(stats->tx_mcs)) stats->tx_mcs[rate.mcs]++; mode = FIELD_GET(MT_TX_RATE_MODE, txrate); switch (mode) { case MT_PHY_TYPE_CCK: cck = true; fallthrough; case MT_PHY_TYPE_OFDM: if (dev->mphy.chandef.chan->band == NL80211_BAND_5GHZ) sband = &dev->mphy.sband_5g.sband; else sband = &dev->mphy.sband_2g.sband; rate.mcs = mt76_get_rate(dev->mphy.dev, sband, rate.mcs, cck); rate.legacy = sband->bitrates[rate.mcs].bitrate; break; case MT_PHY_TYPE_HT: case MT_PHY_TYPE_HT_GF: if (rate.mcs > 31) goto out; rate.flags = RATE_INFO_FLAGS_MCS; if (wcid->rate.flags & RATE_INFO_FLAGS_SHORT_GI) rate.flags |= RATE_INFO_FLAGS_SHORT_GI; break; case MT_PHY_TYPE_VHT: if (rate.mcs > 9) goto out; rate.flags = RATE_INFO_FLAGS_VHT_MCS; break; case MT_PHY_TYPE_HE_SU: case MT_PHY_TYPE_HE_EXT_SU: case MT_PHY_TYPE_HE_TB: case MT_PHY_TYPE_HE_MU: if (rate.mcs > 11) goto out; rate.he_gi = wcid->rate.he_gi; rate.he_dcm = FIELD_GET(MT_TX_RATE_DCM, txrate); rate.flags = RATE_INFO_FLAGS_HE_MCS; break; default: goto out; } stats->tx_mode[mode]++; switch (FIELD_GET(MT_TXS0_BW, txs)) { case IEEE80211_STA_RX_BW_160: rate.bw = RATE_INFO_BW_160; stats->tx_bw[3]++; break; case IEEE80211_STA_RX_BW_80: rate.bw = RATE_INFO_BW_80; stats->tx_bw[2]++; break; case IEEE80211_STA_RX_BW_40: rate.bw = RATE_INFO_BW_40; stats->tx_bw[1]++; break; default: rate.bw = RATE_INFO_BW_20; stats->tx_bw[0]++; break; } wcid->rate = rate; out: if (skb) mt76_tx_status_skb_done(mdev, skb, &list); mt76_tx_status_unlock(mdev, &list); return !!skb; } void mt7921_mac_add_txs(struct mt7921_dev *dev, void *data) { struct mt7921_sta *msta = NULL; struct mt76_wcid *wcid; __le32 *txs_data = data; u16 wcidx; u8 pid; if (le32_get_bits(txs_data[0], MT_TXS0_TXS_FORMAT) > 1) return; wcidx = le32_get_bits(txs_data[2], MT_TXS2_WCID); pid = le32_get_bits(txs_data[3], MT_TXS3_PID); if (pid < MT_PACKET_ID_FIRST) return; if (wcidx >= MT7921_WTBL_SIZE) return; rcu_read_lock(); wcid = rcu_dereference(dev->mt76.wcid[wcidx]); if (!wcid) goto out; mt7921_mac_add_txs_skb(dev, wcid, pid, txs_data); if (!wcid->sta) goto out; msta = container_of(wcid, struct mt7921_sta, wcid); spin_lock_bh(&dev->sta_poll_lock); if (list_empty(&msta->poll_list)) list_add_tail(&msta->poll_list, &dev->sta_poll_list); spin_unlock_bh(&dev->sta_poll_lock); out: rcu_read_unlock(); } EXPORT_SYMBOL_GPL(mt7921_mac_add_txs); void mt7921_queue_rx_skb(struct mt76_dev *mdev, enum mt76_rxq_id q, struct sk_buff *skb) { struct mt7921_dev *dev = container_of(mdev, struct mt7921_dev, mt76); __le32 *rxd = (__le32 *)skb->data; __le32 *end = (__le32 *)&skb->data[skb->len]; enum rx_pkt_type type; u16 flag; type = le32_get_bits(rxd[0], MT_RXD0_PKT_TYPE); flag = le32_get_bits(rxd[0], MT_RXD0_PKT_FLAG); if (type == PKT_TYPE_RX_EVENT && flag == 0x1) type = PKT_TYPE_NORMAL_MCU; switch (type) { case PKT_TYPE_RX_EVENT: mt7921_mcu_rx_event(dev, skb); break; case PKT_TYPE_TXS: for (rxd += 2; rxd + 8 <= end; rxd += 8) mt7921_mac_add_txs(dev, rxd); dev_kfree_skb(skb); break; case PKT_TYPE_NORMAL_MCU: case PKT_TYPE_NORMAL: if (!mt7921_mac_fill_rx(dev, skb)) { mt76_rx(&dev->mt76, q, skb); return; } fallthrough; default: dev_kfree_skb(skb); break; } } EXPORT_SYMBOL_GPL(mt7921_queue_rx_skb); void mt7921_mac_reset_counters(struct mt7921_phy *phy) { struct mt7921_dev *dev = phy->dev; int i; for (i = 0; i < 4; i++) { mt76_rr(dev, MT_TX_AGG_CNT(0, i)); mt76_rr(dev, MT_TX_AGG_CNT2(0, i)); } dev->mt76.phy.survey_time = ktime_get_boottime(); memset(&dev->mt76.aggr_stats[0], 0, sizeof(dev->mt76.aggr_stats) / 2); /* reset airtime counters */ mt76_rr(dev, MT_MIB_SDR9(0)); mt76_rr(dev, MT_MIB_SDR36(0)); mt76_rr(dev, MT_MIB_SDR37(0)); mt76_set(dev, MT_WF_RMAC_MIB_TIME0(0), MT_WF_RMAC_MIB_RXTIME_CLR); mt76_set(dev, MT_WF_RMAC_MIB_AIRTIME0(0), MT_WF_RMAC_MIB_RXTIME_CLR); } void mt7921_mac_set_timing(struct mt7921_phy *phy) { s16 coverage_class = phy->coverage_class; struct mt7921_dev *dev = phy->dev; u32 val, reg_offset; u32 cck = FIELD_PREP(MT_TIMEOUT_VAL_PLCP, 231) | FIELD_PREP(MT_TIMEOUT_VAL_CCA, 48); u32 ofdm = FIELD_PREP(MT_TIMEOUT_VAL_PLCP, 60) | FIELD_PREP(MT_TIMEOUT_VAL_CCA, 28); bool is_2ghz = phy->mt76->chandef.chan->band == NL80211_BAND_2GHZ; int sifs = is_2ghz ? 10 : 16, offset; if (!test_bit(MT76_STATE_RUNNING, &phy->mt76->state)) return; mt76_set(dev, MT_ARB_SCR(0), MT_ARB_SCR_TX_DISABLE | MT_ARB_SCR_RX_DISABLE); udelay(1); offset = 3 * coverage_class; reg_offset = FIELD_PREP(MT_TIMEOUT_VAL_PLCP, offset) | FIELD_PREP(MT_TIMEOUT_VAL_CCA, offset); mt76_wr(dev, MT_TMAC_CDTR(0), cck + reg_offset); mt76_wr(dev, MT_TMAC_ODTR(0), ofdm + reg_offset); mt76_wr(dev, MT_TMAC_ICR0(0), FIELD_PREP(MT_IFS_EIFS, 360) | FIELD_PREP(MT_IFS_RIFS, 2) | FIELD_PREP(MT_IFS_SIFS, sifs) | FIELD_PREP(MT_IFS_SLOT, phy->slottime)); if (phy->slottime < 20 || !is_2ghz) val = MT7921_CFEND_RATE_DEFAULT; else val = MT7921_CFEND_RATE_11B; mt76_rmw_field(dev, MT_AGG_ACR0(0), MT_AGG_ACR_CFEND_RATE, val); mt76_clear(dev, MT_ARB_SCR(0), MT_ARB_SCR_TX_DISABLE | MT_ARB_SCR_RX_DISABLE); } static u8 mt7921_phy_get_nf(struct mt7921_phy *phy, int idx) { return 0; } static void mt7921_phy_update_channel(struct mt76_phy *mphy, int idx) { struct mt7921_dev *dev = container_of(mphy->dev, struct mt7921_dev, mt76); struct mt7921_phy *phy = (struct mt7921_phy *)mphy->priv; struct mt76_channel_state *state; u64 busy_time, tx_time, rx_time, obss_time; int nf; busy_time = mt76_get_field(dev, MT_MIB_SDR9(idx), MT_MIB_SDR9_BUSY_MASK); tx_time = mt76_get_field(dev, MT_MIB_SDR36(idx), MT_MIB_SDR36_TXTIME_MASK); rx_time = mt76_get_field(dev, MT_MIB_SDR37(idx), MT_MIB_SDR37_RXTIME_MASK); obss_time = mt76_get_field(dev, MT_WF_RMAC_MIB_AIRTIME14(idx), MT_MIB_OBSSTIME_MASK); nf = mt7921_phy_get_nf(phy, idx); if (!phy->noise) phy->noise = nf << 4; else if (nf) phy->noise += nf - (phy->noise >> 4); state = mphy->chan_state; state->cc_busy += busy_time; state->cc_tx += tx_time; state->cc_rx += rx_time + obss_time; state->cc_bss_rx += rx_time; state->noise = -(phy->noise >> 4); } void mt7921_update_channel(struct mt76_phy *mphy) { struct mt7921_dev *dev = container_of(mphy->dev, struct mt7921_dev, mt76); if (mt76_connac_pm_wake(mphy, &dev->pm)) return; mt7921_phy_update_channel(mphy, 0); /* reset obss airtime */ mt76_set(dev, MT_WF_RMAC_MIB_TIME0(0), MT_WF_RMAC_MIB_RXTIME_CLR); mt76_connac_power_save_sched(mphy, &dev->pm); } EXPORT_SYMBOL_GPL(mt7921_update_channel); static void mt7921_vif_connect_iter(void *priv, u8 *mac, struct ieee80211_vif *vif) { struct mt7921_vif *mvif = (struct mt7921_vif *)vif->drv_priv; struct mt7921_dev *dev = mvif->phy->dev; if (vif->type == NL80211_IFTYPE_STATION) ieee80211_disconnect(vif, true); mt76_connac_mcu_uni_add_dev(&dev->mphy, vif, &mvif->sta.wcid, true); mt7921_mcu_set_tx(dev, vif); } /* system error recovery */ void mt7921_mac_reset_work(struct work_struct *work) { struct mt7921_dev *dev = container_of(work, struct mt7921_dev, reset_work); struct ieee80211_hw *hw = mt76_hw(dev); struct mt76_connac_pm *pm = &dev->pm; int i; dev_err(dev->mt76.dev, "chip reset\n"); dev->hw_full_reset = true; ieee80211_stop_queues(hw); cancel_delayed_work_sync(&dev->mphy.mac_work); cancel_delayed_work_sync(&pm->ps_work); cancel_work_sync(&pm->wake_work); mutex_lock(&dev->mt76.mutex); for (i = 0; i < 10; i++) if (!mt7921_dev_reset(dev)) break; mutex_unlock(&dev->mt76.mutex); if (i == 10) dev_err(dev->mt76.dev, "chip reset failed\n"); if (test_and_clear_bit(MT76_HW_SCANNING, &dev->mphy.state)) { struct cfg80211_scan_info info = { .aborted = true, }; ieee80211_scan_completed(dev->mphy.hw, &info); } dev->hw_full_reset = false; pm->suspended = false; ieee80211_wake_queues(hw); ieee80211_iterate_active_interfaces(hw, IEEE80211_IFACE_ITER_RESUME_ALL, mt7921_vif_connect_iter, NULL); mt76_connac_power_save_sched(&dev->mt76.phy, pm); } void mt7921_reset(struct mt76_dev *mdev) { struct mt7921_dev *dev = container_of(mdev, struct mt7921_dev, mt76); if (!dev->hw_init_done) return; if (dev->hw_full_reset) return; queue_work(dev->mt76.wq, &dev->reset_work); } void mt7921_mac_update_mib_stats(struct mt7921_phy *phy) { struct mt7921_dev *dev = phy->dev; struct mib_stats *mib = &phy->mib; int i, aggr0 = 0, aggr1; u32 val; mib->fcs_err_cnt += mt76_get_field(dev, MT_MIB_SDR3(0), MT_MIB_SDR3_FCS_ERR_MASK); mib->ack_fail_cnt += mt76_get_field(dev, MT_MIB_MB_BSDR3(0), MT_MIB_ACK_FAIL_COUNT_MASK); mib->ba_miss_cnt += mt76_get_field(dev, MT_MIB_MB_BSDR2(0), MT_MIB_BA_FAIL_COUNT_MASK); mib->rts_cnt += mt76_get_field(dev, MT_MIB_MB_BSDR0(0), MT_MIB_RTS_COUNT_MASK); mib->rts_retries_cnt += mt76_get_field(dev, MT_MIB_MB_BSDR1(0), MT_MIB_RTS_FAIL_COUNT_MASK); mib->tx_ampdu_cnt += mt76_rr(dev, MT_MIB_SDR12(0)); mib->tx_mpdu_attempts_cnt += mt76_rr(dev, MT_MIB_SDR14(0)); mib->tx_mpdu_success_cnt += mt76_rr(dev, MT_MIB_SDR15(0)); val = mt76_rr(dev, MT_MIB_SDR32(0)); mib->tx_pkt_ebf_cnt += FIELD_GET(MT_MIB_SDR9_EBF_CNT_MASK, val); mib->tx_pkt_ibf_cnt += FIELD_GET(MT_MIB_SDR9_IBF_CNT_MASK, val); val = mt76_rr(dev, MT_ETBF_TX_APP_CNT(0)); mib->tx_bf_ibf_ppdu_cnt += FIELD_GET(MT_ETBF_TX_IBF_CNT, val); mib->tx_bf_ebf_ppdu_cnt += FIELD_GET(MT_ETBF_TX_EBF_CNT, val); val = mt76_rr(dev, MT_ETBF_RX_FB_CNT(0)); mib->tx_bf_rx_fb_all_cnt += FIELD_GET(MT_ETBF_RX_FB_ALL, val); mib->tx_bf_rx_fb_he_cnt += FIELD_GET(MT_ETBF_RX_FB_HE, val); mib->tx_bf_rx_fb_vht_cnt += FIELD_GET(MT_ETBF_RX_FB_VHT, val); mib->tx_bf_rx_fb_ht_cnt += FIELD_GET(MT_ETBF_RX_FB_HT, val); mib->rx_mpdu_cnt += mt76_rr(dev, MT_MIB_SDR5(0)); mib->rx_ampdu_cnt += mt76_rr(dev, MT_MIB_SDR22(0)); mib->rx_ampdu_bytes_cnt += mt76_rr(dev, MT_MIB_SDR23(0)); mib->rx_ba_cnt += mt76_rr(dev, MT_MIB_SDR31(0)); for (i = 0; i < ARRAY_SIZE(mib->tx_amsdu); i++) { val = mt76_rr(dev, MT_PLE_AMSDU_PACK_MSDU_CNT(i)); mib->tx_amsdu[i] += val; mib->tx_amsdu_cnt += val; } for (i = 0, aggr1 = aggr0 + 4; i < 4; i++) { u32 val2; val = mt76_rr(dev, MT_TX_AGG_CNT(0, i)); val2 = mt76_rr(dev, MT_TX_AGG_CNT2(0, i)); dev->mt76.aggr_stats[aggr0++] += val & 0xffff; dev->mt76.aggr_stats[aggr0++] += val >> 16; dev->mt76.aggr_stats[aggr1++] += val2 & 0xffff; dev->mt76.aggr_stats[aggr1++] += val2 >> 16; } } void mt7921_mac_work(struct work_struct *work) { struct mt7921_phy *phy; struct mt76_phy *mphy; mphy = (struct mt76_phy *)container_of(work, struct mt76_phy, mac_work.work); phy = mphy->priv; mt7921_mutex_acquire(phy->dev); mt76_update_survey(mphy); if (++mphy->mac_work_count == 2) { mphy->mac_work_count = 0; mt7921_mac_update_mib_stats(phy); } mt7921_mutex_release(phy->dev); mt76_tx_status_check(mphy->dev, false); ieee80211_queue_delayed_work(phy->mt76->hw, &mphy->mac_work, MT7921_WATCHDOG_TIME); } void mt7921_pm_wake_work(struct work_struct *work) { struct mt7921_dev *dev; struct mt76_phy *mphy; dev = (struct mt7921_dev *)container_of(work, struct mt7921_dev, pm.wake_work); mphy = dev->phy.mt76; if (!mt7921_mcu_drv_pmctrl(dev)) { struct mt76_dev *mdev = &dev->mt76; int i; if (mt76_is_sdio(mdev)) { mt76_connac_pm_dequeue_skbs(mphy, &dev->pm); mt76_worker_schedule(&mdev->sdio.txrx_worker); } else { mt76_for_each_q_rx(mdev, i) napi_schedule(&mdev->napi[i]); mt76_connac_pm_dequeue_skbs(mphy, &dev->pm); mt7921_mcu_tx_cleanup(dev); } if (test_bit(MT76_STATE_RUNNING, &mphy->state)) ieee80211_queue_delayed_work(mphy->hw, &mphy->mac_work, MT7921_WATCHDOG_TIME); } ieee80211_wake_queues(mphy->hw); wake_up(&dev->pm.wait); } void mt7921_pm_power_save_work(struct work_struct *work) { struct mt7921_dev *dev; unsigned long delta; struct mt76_phy *mphy; dev = (struct mt7921_dev *)container_of(work, struct mt7921_dev, pm.ps_work.work); mphy = dev->phy.mt76; delta = dev->pm.idle_timeout; if (test_bit(MT76_HW_SCANNING, &mphy->state) || test_bit(MT76_HW_SCHED_SCANNING, &mphy->state) || dev->fw_assert) goto out; if (mutex_is_locked(&dev->mt76.mutex)) /* if mt76 mutex is held we should not put the device * to sleep since we are currently accessing device * register map. We need to wait for the next power_save * trigger. */ goto out; if (time_is_after_jiffies(dev->pm.last_activity + delta)) { delta = dev->pm.last_activity + delta - jiffies; goto out; } if (!mt7921_mcu_fw_pmctrl(dev)) { cancel_delayed_work_sync(&mphy->mac_work); return; } out: queue_delayed_work(dev->mt76.wq, &dev->pm.ps_work, delta); } void mt7921_coredump_work(struct work_struct *work) { struct mt7921_dev *dev; char *dump, *data; dev = (struct mt7921_dev *)container_of(work, struct mt7921_dev, coredump.work.work); if (time_is_after_jiffies(dev->coredump.last_activity + 4 * MT76_CONNAC_COREDUMP_TIMEOUT)) { queue_delayed_work(dev->mt76.wq, &dev->coredump.work, MT76_CONNAC_COREDUMP_TIMEOUT); return; } dump = vzalloc(MT76_CONNAC_COREDUMP_SZ); data = dump; while (true) { struct sk_buff *skb; spin_lock_bh(&dev->mt76.lock); skb = __skb_dequeue(&dev->coredump.msg_list); spin_unlock_bh(&dev->mt76.lock); if (!skb) break; skb_pull(skb, sizeof(struct mt7921_mcu_rxd)); if (!dump || data + skb->len - dump > MT76_CONNAC_COREDUMP_SZ) { dev_kfree_skb(skb); continue; } memcpy(data, skb->data, skb->len); data += skb->len; dev_kfree_skb(skb); } if (dump) dev_coredumpv(dev->mt76.dev, dump, MT76_CONNAC_COREDUMP_SZ, GFP_KERNEL); mt7921_reset(&dev->mt76); } /* usb_sdio */ static void mt7921_usb_sdio_write_txwi(struct mt7921_dev *dev, struct mt76_wcid *wcid, enum mt76_txq_id qid, struct ieee80211_sta *sta, struct ieee80211_key_conf *key, int pid, struct sk_buff *skb) { __le32 *txwi = (__le32 *)(skb->data - MT_SDIO_TXD_SIZE); memset(txwi, 0, MT_SDIO_TXD_SIZE); mt7921_mac_write_txwi(dev, txwi, skb, wcid, key, pid, false); skb_push(skb, MT_SDIO_TXD_SIZE); } int mt7921_usb_sdio_tx_prepare_skb(struct mt76_dev *mdev, void *txwi_ptr, enum mt76_txq_id qid, struct mt76_wcid *wcid, struct ieee80211_sta *sta, struct mt76_tx_info *tx_info) { struct mt7921_dev *dev = container_of(mdev, struct mt7921_dev, mt76); struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_info->skb); struct ieee80211_key_conf *key = info->control.hw_key; struct sk_buff *skb = tx_info->skb; int err, pad, pktid, type; if (unlikely(tx_info->skb->len <= ETH_HLEN)) return -EINVAL; if (!wcid) wcid = &dev->mt76.global_wcid; if (sta) { struct mt7921_sta *msta = (struct mt7921_sta *)sta->drv_priv; if (time_after(jiffies, msta->last_txs + HZ / 4)) { info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS; msta->last_txs = jiffies; } } pktid = mt76_tx_status_skb_add(&dev->mt76, wcid, skb); mt7921_usb_sdio_write_txwi(dev, wcid, qid, sta, key, pktid, skb); type = mt76_is_sdio(mdev) ? MT7921_SDIO_DATA : 0; mt7921_skb_add_usb_sdio_hdr(dev, skb, type); pad = round_up(skb->len, 4) - skb->len; if (mt76_is_usb(mdev)) pad += 4; err = mt76_skb_adjust_pad(skb, pad); if (err) /* Release pktid in case of error. */ idr_remove(&wcid->pktid, pktid); return err; } EXPORT_SYMBOL_GPL(mt7921_usb_sdio_tx_prepare_skb); void mt7921_usb_sdio_tx_complete_skb(struct mt76_dev *mdev, struct mt76_queue_entry *e) { __le32 *txwi = (__le32 *)(e->skb->data + MT_SDIO_HDR_SIZE); unsigned int headroom = MT_SDIO_TXD_SIZE + MT_SDIO_HDR_SIZE; struct ieee80211_sta *sta; struct mt76_wcid *wcid; u16 idx; idx = le32_get_bits(txwi[1], MT_TXD1_WLAN_IDX); wcid = rcu_dereference(mdev->wcid[idx]); sta = wcid_to_sta(wcid); if (sta && likely(e->skb->protocol != cpu_to_be16(ETH_P_PAE))) mt7921_tx_check_aggr(sta, txwi); skb_pull(e->skb, headroom); mt76_tx_complete_skb(mdev, e->wcid, e->skb); } EXPORT_SYMBOL_GPL(mt7921_usb_sdio_tx_complete_skb); bool mt7921_usb_sdio_tx_status_data(struct mt76_dev *mdev, u8 *update) { struct mt7921_dev *dev = container_of(mdev, struct mt7921_dev, mt76); mt7921_mutex_acquire(dev); mt7921_mac_sta_poll(dev); mt7921_mutex_release(dev); return false; } EXPORT_SYMBOL_GPL(mt7921_usb_sdio_tx_status_data);