Back to home page

OSCL-LXR
 
 

     

0001 // SPDX-License-Identifier: ISC
0002 /*
0003  * Copyright (C) 2016 Felix Fietkau <nbd@nbd.name>
0004  * Copyright (C) 2018 Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>
0005  */
0006 
0007 #include <linux/kernel.h>
0008 
0009 #include "mt76x02.h"
0010 
0011 void mt76x02_tx(struct ieee80211_hw *hw, struct ieee80211_tx_control *control,
0012         struct sk_buff *skb)
0013 {
0014     struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
0015     struct mt76x02_dev *dev = hw->priv;
0016     struct ieee80211_vif *vif = info->control.vif;
0017     struct mt76_wcid *wcid = &dev->mt76.global_wcid;
0018 
0019     if (control->sta) {
0020         struct mt76x02_sta *msta;
0021 
0022         msta = (struct mt76x02_sta *)control->sta->drv_priv;
0023         wcid = &msta->wcid;
0024     } else if (vif) {
0025         struct mt76x02_vif *mvif;
0026 
0027         mvif = (struct mt76x02_vif *)vif->drv_priv;
0028         wcid = &mvif->group_wcid;
0029     }
0030 
0031     mt76_tx(&dev->mphy, control->sta, wcid, skb);
0032 }
0033 EXPORT_SYMBOL_GPL(mt76x02_tx);
0034 
0035 void mt76x02_queue_rx_skb(struct mt76_dev *mdev, enum mt76_rxq_id q,
0036               struct sk_buff *skb)
0037 {
0038     struct mt76x02_dev *dev = container_of(mdev, struct mt76x02_dev, mt76);
0039     void *rxwi = skb->data;
0040 
0041     if (q == MT_RXQ_MCU) {
0042         mt76_mcu_rx_event(&dev->mt76, skb);
0043         return;
0044     }
0045 
0046     skb_pull(skb, sizeof(struct mt76x02_rxwi));
0047     if (mt76x02_mac_process_rx(dev, skb, rxwi)) {
0048         dev_kfree_skb(skb);
0049         return;
0050     }
0051 
0052     mt76_rx(mdev, q, skb);
0053 }
0054 EXPORT_SYMBOL_GPL(mt76x02_queue_rx_skb);
0055 
0056 s8 mt76x02_tx_get_max_txpwr_adj(struct mt76x02_dev *dev,
0057                 const struct ieee80211_tx_rate *rate)
0058 {
0059     s8 max_txpwr;
0060 
0061     if (rate->flags & IEEE80211_TX_RC_VHT_MCS) {
0062         u8 mcs = ieee80211_rate_get_vht_mcs(rate);
0063 
0064         if (mcs == 8 || mcs == 9) {
0065             max_txpwr = dev->mt76.rate_power.vht[8];
0066         } else {
0067             u8 nss, idx;
0068 
0069             nss = ieee80211_rate_get_vht_nss(rate);
0070             idx = ((nss - 1) << 3) + mcs;
0071             max_txpwr = dev->mt76.rate_power.ht[idx & 0xf];
0072         }
0073     } else if (rate->flags & IEEE80211_TX_RC_MCS) {
0074         max_txpwr = dev->mt76.rate_power.ht[rate->idx & 0xf];
0075     } else {
0076         enum nl80211_band band = dev->mphy.chandef.chan->band;
0077 
0078         if (band == NL80211_BAND_2GHZ) {
0079             const struct ieee80211_rate *r;
0080             struct wiphy *wiphy = dev->mt76.hw->wiphy;
0081             struct mt76_rate_power *rp = &dev->mt76.rate_power;
0082 
0083             r = &wiphy->bands[band]->bitrates[rate->idx];
0084             if (r->flags & IEEE80211_RATE_SHORT_PREAMBLE)
0085                 max_txpwr = rp->cck[r->hw_value & 0x3];
0086             else
0087                 max_txpwr = rp->ofdm[r->hw_value & 0x7];
0088         } else {
0089             max_txpwr = dev->mt76.rate_power.ofdm[rate->idx & 0x7];
0090         }
0091     }
0092 
0093     return max_txpwr;
0094 }
0095 
0096 s8 mt76x02_tx_get_txpwr_adj(struct mt76x02_dev *dev, s8 txpwr, s8 max_txpwr_adj)
0097 {
0098     txpwr = min_t(s8, txpwr, dev->txpower_conf);
0099     txpwr -= (dev->target_power + dev->target_power_delta[0]);
0100     txpwr = min_t(s8, txpwr, max_txpwr_adj);
0101 
0102     if (!dev->enable_tpc)
0103         return 0;
0104     else if (txpwr >= 0)
0105         return min_t(s8, txpwr, 7);
0106     else
0107         return (txpwr < -16) ? 8 : (txpwr + 32) / 2;
0108 }
0109 
0110 void mt76x02_tx_set_txpwr_auto(struct mt76x02_dev *dev, s8 txpwr)
0111 {
0112     s8 txpwr_adj;
0113 
0114     txpwr_adj = mt76x02_tx_get_txpwr_adj(dev, txpwr,
0115                          dev->mt76.rate_power.ofdm[4]);
0116     mt76_rmw_field(dev, MT_PROT_AUTO_TX_CFG,
0117                MT_PROT_AUTO_TX_CFG_PROT_PADJ, txpwr_adj);
0118     mt76_rmw_field(dev, MT_PROT_AUTO_TX_CFG,
0119                MT_PROT_AUTO_TX_CFG_AUTO_PADJ, txpwr_adj);
0120 }
0121 EXPORT_SYMBOL_GPL(mt76x02_tx_set_txpwr_auto);
0122 
0123 bool mt76x02_tx_status_data(struct mt76_dev *mdev, u8 *update)
0124 {
0125     struct mt76x02_dev *dev = container_of(mdev, struct mt76x02_dev, mt76);
0126     struct mt76x02_tx_status stat;
0127 
0128     if (!mt76x02_mac_load_tx_status(dev, &stat))
0129         return false;
0130 
0131     mt76x02_send_tx_status(dev, &stat, update);
0132 
0133     return true;
0134 }
0135 EXPORT_SYMBOL_GPL(mt76x02_tx_status_data);
0136 
0137 int mt76x02_tx_prepare_skb(struct mt76_dev *mdev, void *txwi_ptr,
0138                enum mt76_txq_id qid, struct mt76_wcid *wcid,
0139                struct ieee80211_sta *sta,
0140                struct mt76_tx_info *tx_info)
0141 {
0142     struct mt76x02_dev *dev = container_of(mdev, struct mt76x02_dev, mt76);
0143     struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)tx_info->skb->data;
0144     struct mt76x02_txwi *txwi = txwi_ptr;
0145     bool ampdu = IEEE80211_SKB_CB(tx_info->skb)->flags & IEEE80211_TX_CTL_AMPDU;
0146     int hdrlen, len, pid, qsel = MT_QSEL_EDCA;
0147 
0148     if (qid == MT_TXQ_PSD && wcid && wcid->idx < 128)
0149         mt76x02_mac_wcid_set_drop(dev, wcid->idx, false);
0150 
0151     hdrlen = ieee80211_hdrlen(hdr->frame_control);
0152     len = tx_info->skb->len - (hdrlen & 2);
0153     mt76x02_mac_write_txwi(dev, txwi, tx_info->skb, wcid, sta, len);
0154 
0155     pid = mt76_tx_status_skb_add(mdev, wcid, tx_info->skb);
0156 
0157     /* encode packet rate for no-skb packet id to fix up status reporting */
0158     if (pid == MT_PACKET_ID_NO_SKB)
0159         pid = MT_PACKET_ID_HAS_RATE |
0160               (le16_to_cpu(txwi->rate) & MT_RXWI_RATE_INDEX) |
0161               FIELD_PREP(MT_PKTID_AC,
0162                  skb_get_queue_mapping(tx_info->skb));
0163 
0164     txwi->pktid = pid;
0165 
0166     if (mt76_is_skb_pktid(pid) && ampdu)
0167         qsel = MT_QSEL_MGMT;
0168 
0169     tx_info->info = FIELD_PREP(MT_TXD_INFO_QSEL, qsel) |
0170             MT_TXD_INFO_80211;
0171 
0172     if (!wcid || wcid->hw_key_idx == 0xff || wcid->sw_iv)
0173         tx_info->info |= MT_TXD_INFO_WIV;
0174 
0175     if (sta) {
0176         struct mt76x02_sta *msta = (struct mt76x02_sta *)sta->drv_priv;
0177 
0178         ewma_pktlen_add(&msta->pktlen, tx_info->skb->len);
0179     }
0180 
0181     return 0;
0182 }
0183 EXPORT_SYMBOL_GPL(mt76x02_tx_prepare_skb);
[ Source navigation ] [ Diff markup ] [ Identifier search ] [ general search ]

This page was automatically generated by the 2.1.0 LXR engine.

The LXR team
Valid CSS 2.1! Valid HTML 4.01!