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->mt76, 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 /* this is used just by mmio code */ 43 mt76_mcu_rx_event(&dev->mt76, skb); 44 return; 45 } 46 47 skb_pull(skb, sizeof(struct mt76x02_rxwi)); 48 if (mt76x02_mac_process_rx(dev, skb, rxwi)) { 49 dev_kfree_skb(skb); 50 return; 51 } 52 53 mt76_rx(mdev, q, skb); 54 } 55 EXPORT_SYMBOL_GPL(mt76x02_queue_rx_skb); 56 57 s8 mt76x02_tx_get_max_txpwr_adj(struct mt76x02_dev *dev, 58 const struct ieee80211_tx_rate *rate) 59 { 60 s8 max_txpwr; 61 62 if (rate->flags & IEEE80211_TX_RC_VHT_MCS) { 63 u8 mcs = ieee80211_rate_get_vht_mcs(rate); 64 65 if (mcs == 8 || mcs == 9) { 66 max_txpwr = dev->mt76.rate_power.vht[8]; 67 } else { 68 u8 nss, idx; 69 70 nss = ieee80211_rate_get_vht_nss(rate); 71 idx = ((nss - 1) << 3) + mcs; 72 max_txpwr = dev->mt76.rate_power.ht[idx & 0xf]; 73 } 74 } else if (rate->flags & IEEE80211_TX_RC_MCS) { 75 max_txpwr = dev->mt76.rate_power.ht[rate->idx & 0xf]; 76 } else { 77 enum nl80211_band band = dev->mt76.chandef.chan->band; 78 79 if (band == NL80211_BAND_2GHZ) { 80 const struct ieee80211_rate *r; 81 struct wiphy *wiphy = dev->mt76.hw->wiphy; 82 struct mt76_rate_power *rp = &dev->mt76.rate_power; 83 84 r = &wiphy->bands[band]->bitrates[rate->idx]; 85 if (r->flags & IEEE80211_RATE_SHORT_PREAMBLE) 86 max_txpwr = rp->cck[r->hw_value & 0x3]; 87 else 88 max_txpwr = rp->ofdm[r->hw_value & 0x7]; 89 } else { 90 max_txpwr = dev->mt76.rate_power.ofdm[rate->idx & 0x7]; 91 } 92 } 93 94 return max_txpwr; 95 } 96 97 s8 mt76x02_tx_get_txpwr_adj(struct mt76x02_dev *dev, s8 txpwr, s8 max_txpwr_adj) 98 { 99 txpwr = min_t(s8, txpwr, dev->mt76.txpower_conf); 100 txpwr -= (dev->target_power + dev->target_power_delta[0]); 101 txpwr = min_t(s8, txpwr, max_txpwr_adj); 102 103 if (!dev->enable_tpc) 104 return 0; 105 else if (txpwr >= 0) 106 return min_t(s8, txpwr, 7); 107 else 108 return (txpwr < -16) ? 8 : (txpwr + 32) / 2; 109 } 110 111 void mt76x02_tx_set_txpwr_auto(struct mt76x02_dev *dev, s8 txpwr) 112 { 113 s8 txpwr_adj; 114 115 txpwr_adj = mt76x02_tx_get_txpwr_adj(dev, txpwr, 116 dev->mt76.rate_power.ofdm[4]); 117 mt76_rmw_field(dev, MT_PROT_AUTO_TX_CFG, 118 MT_PROT_AUTO_TX_CFG_PROT_PADJ, txpwr_adj); 119 mt76_rmw_field(dev, MT_PROT_AUTO_TX_CFG, 120 MT_PROT_AUTO_TX_CFG_AUTO_PADJ, txpwr_adj); 121 } 122 EXPORT_SYMBOL_GPL(mt76x02_tx_set_txpwr_auto); 123 124 bool mt76x02_tx_status_data(struct mt76_dev *mdev, u8 *update) 125 { 126 struct mt76x02_dev *dev = container_of(mdev, struct mt76x02_dev, mt76); 127 struct mt76x02_tx_status stat; 128 129 if (!mt76x02_mac_load_tx_status(dev, &stat)) 130 return false; 131 132 mt76x02_send_tx_status(dev, &stat, update); 133 134 return true; 135 } 136 EXPORT_SYMBOL_GPL(mt76x02_tx_status_data); 137 138 int mt76x02_tx_prepare_skb(struct mt76_dev *mdev, void *txwi_ptr, 139 enum mt76_txq_id qid, struct mt76_wcid *wcid, 140 struct ieee80211_sta *sta, 141 struct mt76_tx_info *tx_info) 142 { 143 struct mt76x02_dev *dev = container_of(mdev, struct mt76x02_dev, mt76); 144 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)tx_info->skb->data; 145 struct mt76x02_txwi *txwi = txwi_ptr; 146 bool ampdu = IEEE80211_SKB_CB(tx_info->skb)->flags & IEEE80211_TX_CTL_AMPDU; 147 int hdrlen, len, pid, qsel = MT_QSEL_EDCA; 148 149 if (qid == MT_TXQ_PSD && wcid && wcid->idx < 128) 150 mt76x02_mac_wcid_set_drop(dev, wcid->idx, false); 151 152 hdrlen = ieee80211_hdrlen(hdr->frame_control); 153 len = tx_info->skb->len - (hdrlen & 2); 154 mt76x02_mac_write_txwi(dev, txwi, tx_info->skb, wcid, sta, len); 155 156 pid = mt76_tx_status_skb_add(mdev, wcid, tx_info->skb); 157 158 /* encode packet rate for no-skb packet id to fix up status reporting */ 159 if (pid == MT_PACKET_ID_NO_SKB) 160 pid = MT_PACKET_ID_HAS_RATE | 161 (le16_to_cpu(txwi->rate) & MT_RXWI_RATE_INDEX) | 162 FIELD_PREP(MT_PKTID_AC, 163 skb_get_queue_mapping(tx_info->skb)); 164 165 txwi->pktid = pid; 166 167 if (mt76_is_skb_pktid(pid) && ampdu) 168 qsel = MT_QSEL_MGMT; 169 170 tx_info->info = FIELD_PREP(MT_TXD_INFO_QSEL, qsel) | 171 MT_TXD_INFO_80211; 172 173 if (!wcid || wcid->hw_key_idx == 0xff || wcid->sw_iv) 174 tx_info->info |= MT_TXD_INFO_WIV; 175 176 if (sta) { 177 struct mt76x02_sta *msta = (struct mt76x02_sta *)sta->drv_priv; 178 179 ewma_pktlen_add(&msta->pktlen, tx_info->skb->len); 180 } 181 182 return 0; 183 } 184 EXPORT_SYMBOL_GPL(mt76x02_tx_prepare_skb); 185