developer | 0f312e8 | 2022-11-01 12:31:52 +0800 | [diff] [blame] | 1 | // SPDX-License-Identifier: ISC |
| 2 | /* |
| 3 | * Copyright (C) 2016 Felix Fietkau <nbd@nbd.name> |
| 4 | * Copyright (C) 2018 Lorenzo Bianconi <lorenzo.bianconi83@gmail.com> |
| 5 | */ |
| 6 | |
| 7 | #include <linux/kernel.h> |
| 8 | |
| 9 | #include "mt76x02.h" |
| 10 | |
| 11 | void mt76x02_tx(struct ieee80211_hw *hw, struct ieee80211_tx_control *control, |
| 12 | struct sk_buff *skb) |
| 13 | { |
| 14 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
| 15 | struct mt76x02_dev *dev = hw->priv; |
| 16 | struct ieee80211_vif *vif = info->control.vif; |
| 17 | struct mt76_wcid *wcid = &dev->mt76.global_wcid; |
| 18 | |
| 19 | if (control->sta) { |
| 20 | struct mt76x02_sta *msta; |
| 21 | |
| 22 | msta = (struct mt76x02_sta *)control->sta->drv_priv; |
| 23 | wcid = &msta->wcid; |
| 24 | } else if (vif) { |
| 25 | struct mt76x02_vif *mvif; |
| 26 | |
| 27 | mvif = (struct mt76x02_vif *)vif->drv_priv; |
| 28 | wcid = &mvif->group_wcid; |
| 29 | } |
| 30 | |
| 31 | mt76_tx(&dev->mphy, control->sta, wcid, skb); |
| 32 | } |
| 33 | EXPORT_SYMBOL_GPL(mt76x02_tx); |
| 34 | |
| 35 | void mt76x02_queue_rx_skb(struct mt76_dev *mdev, enum mt76_rxq_id q, |
| 36 | struct sk_buff *skb) |
| 37 | { |
| 38 | struct mt76x02_dev *dev = container_of(mdev, struct mt76x02_dev, mt76); |
| 39 | void *rxwi = skb->data; |
| 40 | |
| 41 | if (q == MT_RXQ_MCU) { |
| 42 | mt76_mcu_rx_event(&dev->mt76, skb); |
| 43 | return; |
| 44 | } |
| 45 | |
| 46 | skb_pull(skb, sizeof(struct mt76x02_rxwi)); |
| 47 | if (mt76x02_mac_process_rx(dev, skb, rxwi)) { |
| 48 | dev_kfree_skb(skb); |
| 49 | return; |
| 50 | } |
| 51 | |
| 52 | mt76_rx(mdev, q, skb); |
| 53 | } |
| 54 | EXPORT_SYMBOL_GPL(mt76x02_queue_rx_skb); |
| 55 | |
| 56 | s8 mt76x02_tx_get_max_txpwr_adj(struct mt76x02_dev *dev, |
| 57 | const struct ieee80211_tx_rate *rate) |
| 58 | { |
| 59 | s8 max_txpwr; |
| 60 | |
| 61 | if (rate->flags & IEEE80211_TX_RC_VHT_MCS) { |
| 62 | u8 mcs = ieee80211_rate_get_vht_mcs(rate); |
| 63 | |
| 64 | if (mcs == 8 || mcs == 9) { |
| 65 | max_txpwr = dev->rate_power.vht[0]; |
| 66 | } else { |
| 67 | u8 nss, idx; |
| 68 | |
| 69 | nss = ieee80211_rate_get_vht_nss(rate); |
| 70 | idx = ((nss - 1) << 3) + mcs; |
| 71 | max_txpwr = dev->rate_power.ht[idx & 0xf]; |
| 72 | } |
| 73 | } else if (rate->flags & IEEE80211_TX_RC_MCS) { |
| 74 | max_txpwr = dev->rate_power.ht[rate->idx & 0xf]; |
| 75 | } else { |
| 76 | enum nl80211_band band = dev->mphy.chandef.chan->band; |
| 77 | |
| 78 | if (band == NL80211_BAND_2GHZ) { |
| 79 | const struct ieee80211_rate *r; |
| 80 | struct wiphy *wiphy = dev->mt76.hw->wiphy; |
| 81 | struct mt76x02_rate_power *rp = &dev->rate_power; |
| 82 | |
| 83 | r = &wiphy->bands[band]->bitrates[rate->idx]; |
| 84 | if (r->flags & IEEE80211_RATE_SHORT_PREAMBLE) |
| 85 | max_txpwr = rp->cck[r->hw_value & 0x3]; |
| 86 | else |
| 87 | max_txpwr = rp->ofdm[r->hw_value & 0x7]; |
| 88 | } else { |
| 89 | max_txpwr = dev->rate_power.ofdm[rate->idx & 0x7]; |
| 90 | } |
| 91 | } |
| 92 | |
| 93 | return max_txpwr; |
| 94 | } |
| 95 | |
| 96 | s8 mt76x02_tx_get_txpwr_adj(struct mt76x02_dev *dev, s8 txpwr, s8 max_txpwr_adj) |
| 97 | { |
| 98 | txpwr = min_t(s8, txpwr, dev->txpower_conf); |
| 99 | txpwr -= (dev->target_power + dev->target_power_delta[0]); |
| 100 | txpwr = min_t(s8, txpwr, max_txpwr_adj); |
| 101 | |
| 102 | if (!dev->enable_tpc) |
| 103 | return 0; |
| 104 | else if (txpwr >= 0) |
| 105 | return min_t(s8, txpwr, 7); |
| 106 | else |
| 107 | return (txpwr < -16) ? 8 : (txpwr + 32) / 2; |
| 108 | } |
| 109 | |
| 110 | void mt76x02_tx_set_txpwr_auto(struct mt76x02_dev *dev, s8 txpwr) |
| 111 | { |
| 112 | s8 txpwr_adj; |
| 113 | |
| 114 | txpwr_adj = mt76x02_tx_get_txpwr_adj(dev, txpwr, |
| 115 | dev->rate_power.ofdm[4]); |
| 116 | mt76_rmw_field(dev, MT_PROT_AUTO_TX_CFG, |
| 117 | MT_PROT_AUTO_TX_CFG_PROT_PADJ, txpwr_adj); |
| 118 | mt76_rmw_field(dev, MT_PROT_AUTO_TX_CFG, |
| 119 | MT_PROT_AUTO_TX_CFG_AUTO_PADJ, txpwr_adj); |
| 120 | } |
| 121 | EXPORT_SYMBOL_GPL(mt76x02_tx_set_txpwr_auto); |
| 122 | |
| 123 | bool mt76x02_tx_status_data(struct mt76_dev *mdev, u8 *update) |
| 124 | { |
| 125 | struct mt76x02_dev *dev = container_of(mdev, struct mt76x02_dev, mt76); |
| 126 | struct mt76x02_tx_status stat; |
| 127 | |
| 128 | if (!mt76x02_mac_load_tx_status(dev, &stat)) |
| 129 | return false; |
| 130 | |
| 131 | mt76x02_send_tx_status(dev, &stat, update); |
| 132 | |
| 133 | return true; |
| 134 | } |
| 135 | EXPORT_SYMBOL_GPL(mt76x02_tx_status_data); |
| 136 | |
| 137 | int mt76x02_tx_prepare_skb(struct mt76_dev *mdev, void *txwi_ptr, |
| 138 | enum mt76_txq_id qid, struct mt76_wcid *wcid, |
| 139 | struct ieee80211_sta *sta, |
| 140 | struct mt76_tx_info *tx_info) |
| 141 | { |
| 142 | struct mt76x02_dev *dev = container_of(mdev, struct mt76x02_dev, mt76); |
| 143 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)tx_info->skb->data; |
| 144 | struct mt76x02_txwi *txwi = txwi_ptr; |
| 145 | bool ampdu = IEEE80211_SKB_CB(tx_info->skb)->flags & IEEE80211_TX_CTL_AMPDU; |
| 146 | int hdrlen, len, pid, qsel = MT_QSEL_EDCA; |
| 147 | |
| 148 | if (qid == MT_TXQ_PSD && wcid && wcid->idx < 128) |
| 149 | mt76x02_mac_wcid_set_drop(dev, wcid->idx, false); |
| 150 | |
| 151 | hdrlen = ieee80211_hdrlen(hdr->frame_control); |
| 152 | len = tx_info->skb->len - (hdrlen & 2); |
| 153 | mt76x02_mac_write_txwi(dev, txwi, tx_info->skb, wcid, sta, len); |
| 154 | |
| 155 | pid = mt76_tx_status_skb_add(mdev, wcid, tx_info->skb); |
| 156 | |
| 157 | /* encode packet rate for no-skb packet id to fix up status reporting */ |
| 158 | if (pid == MT_PACKET_ID_NO_SKB) |
| 159 | pid = MT_PACKET_ID_HAS_RATE | |
| 160 | (le16_to_cpu(txwi->rate) & MT_RXWI_RATE_INDEX) | |
| 161 | FIELD_PREP(MT_PKTID_AC, |
| 162 | skb_get_queue_mapping(tx_info->skb)); |
| 163 | |
| 164 | txwi->pktid = pid; |
| 165 | |
| 166 | if (mt76_is_skb_pktid(pid) && ampdu) |
| 167 | qsel = MT_QSEL_MGMT; |
| 168 | |
| 169 | tx_info->info = FIELD_PREP(MT_TXD_INFO_QSEL, qsel) | |
| 170 | MT_TXD_INFO_80211; |
| 171 | |
| 172 | if (!wcid || wcid->hw_key_idx == 0xff || wcid->sw_iv) |
| 173 | tx_info->info |= MT_TXD_INFO_WIV; |
| 174 | |
| 175 | if (sta) { |
| 176 | struct mt76x02_sta *msta = (struct mt76x02_sta *)sta->drv_priv; |
| 177 | |
| 178 | ewma_pktlen_add(&msta->pktlen, tx_info->skb->len); |
| 179 | } |
| 180 | |
| 181 | return 0; |
| 182 | } |
| 183 | EXPORT_SYMBOL_GPL(mt76x02_tx_prepare_skb); |