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/*
* Copyright (C) 2016 Felix Fietkau <nbd@nbd.name>
* Copyright (C) 2018 Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <linux/kernel.h>
#include "mt76x02.h"
void mt76x02_tx(struct ieee80211_hw *hw, struct ieee80211_tx_control *control,
struct sk_buff *skb)
{
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
struct mt76x02_dev *dev = hw->priv;
struct ieee80211_vif *vif = info->control.vif;
struct mt76_wcid *wcid = &dev->mt76.global_wcid;
if (control->sta) {
struct mt76x02_sta *msta;
msta = (struct mt76x02_sta *)control->sta->drv_priv;
wcid = &msta->wcid;
} else if (vif) {
struct mt76x02_vif *mvif;
mvif = (struct mt76x02_vif *)vif->drv_priv;
wcid = &mvif->group_wcid;
}
mt76_tx(&dev->mt76, control->sta, wcid, skb);
}
EXPORT_SYMBOL_GPL(mt76x02_tx);
void mt76x02_queue_rx_skb(struct mt76_dev *mdev, enum mt76_rxq_id q,
struct sk_buff *skb)
{
struct mt76x02_dev *dev = container_of(mdev, struct mt76x02_dev, mt76);
void *rxwi = skb->data;
if (q == MT_RXQ_MCU) {
/* this is used just by mmio code */
mt76_mcu_rx_event(&dev->mt76, skb);
return;
}
skb_pull(skb, sizeof(struct mt76x02_rxwi));
if (mt76x02_mac_process_rx(dev, skb, rxwi)) {
dev_kfree_skb(skb);
return;
}
mt76_rx(mdev, q, skb);
}
EXPORT_SYMBOL_GPL(mt76x02_queue_rx_skb);
s8 mt76x02_tx_get_max_txpwr_adj(struct mt76x02_dev *dev,
const struct ieee80211_tx_rate *rate)
{
s8 max_txpwr;
if (rate->flags & IEEE80211_TX_RC_VHT_MCS) {
u8 mcs = ieee80211_rate_get_vht_mcs(rate);
if (mcs == 8 || mcs == 9) {
max_txpwr = dev->mt76.rate_power.vht[8];
} else {
u8 nss, idx;
nss = ieee80211_rate_get_vht_nss(rate);
idx = ((nss - 1) << 3) + mcs;
max_txpwr = dev->mt76.rate_power.ht[idx & 0xf];
}
} else if (rate->flags & IEEE80211_TX_RC_MCS) {
max_txpwr = dev->mt76.rate_power.ht[rate->idx & 0xf];
} else {
enum nl80211_band band = dev->mt76.chandef.chan->band;
if (band == NL80211_BAND_2GHZ) {
const struct ieee80211_rate *r;
struct wiphy *wiphy = dev->mt76.hw->wiphy;
struct mt76_rate_power *rp = &dev->mt76.rate_power;
r = &wiphy->bands[band]->bitrates[rate->idx];
if (r->flags & IEEE80211_RATE_SHORT_PREAMBLE)
max_txpwr = rp->cck[r->hw_value & 0x3];
else
max_txpwr = rp->ofdm[r->hw_value & 0x7];
} else {
max_txpwr = dev->mt76.rate_power.ofdm[rate->idx & 0x7];
}
}
return max_txpwr;
}
s8 mt76x02_tx_get_txpwr_adj(struct mt76x02_dev *dev, s8 txpwr, s8 max_txpwr_adj)
{
txpwr = min_t(s8, txpwr, dev->mt76.txpower_conf);
txpwr -= (dev->target_power + dev->target_power_delta[0]);
txpwr = min_t(s8, txpwr, max_txpwr_adj);
if (!dev->enable_tpc)
return 0;
else if (txpwr >= 0)
return min_t(s8, txpwr, 7);
else
return (txpwr < -16) ? 8 : (txpwr + 32) / 2;
}
void mt76x02_tx_set_txpwr_auto(struct mt76x02_dev *dev, s8 txpwr)
{
s8 txpwr_adj;
txpwr_adj = mt76x02_tx_get_txpwr_adj(dev, txpwr,
dev->mt76.rate_power.ofdm[4]);
mt76_rmw_field(dev, MT_PROT_AUTO_TX_CFG,
MT_PROT_AUTO_TX_CFG_PROT_PADJ, txpwr_adj);
mt76_rmw_field(dev, MT_PROT_AUTO_TX_CFG,
MT_PROT_AUTO_TX_CFG_AUTO_PADJ, txpwr_adj);
}
EXPORT_SYMBOL_GPL(mt76x02_tx_set_txpwr_auto);
bool mt76x02_tx_status_data(struct mt76_dev *mdev, u8 *update)
{
struct mt76x02_dev *dev = container_of(mdev, struct mt76x02_dev, mt76);
struct mt76x02_tx_status stat;
if (!mt76x02_mac_load_tx_status(dev, &stat))
return false;
mt76x02_send_tx_status(dev, &stat, update);
return true;
}
EXPORT_SYMBOL_GPL(mt76x02_tx_status_data);
int mt76x02_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 mt76x02_dev *dev = container_of(mdev, struct mt76x02_dev, mt76);
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)tx_info->skb->data;
struct mt76x02_txwi *txwi = txwi_ptr;
bool ampdu = IEEE80211_SKB_CB(tx_info->skb)->flags & IEEE80211_TX_CTL_AMPDU;
int hdrlen, len, pid, qsel = MT_QSEL_EDCA;
if (qid == MT_TXQ_PSD && wcid && wcid->idx < 128)
mt76x02_mac_wcid_set_drop(dev, wcid->idx, false);
hdrlen = ieee80211_hdrlen(hdr->frame_control);
len = tx_info->skb->len - (hdrlen & 2);
mt76x02_mac_write_txwi(dev, txwi, tx_info->skb, wcid, sta, len);
pid = mt76_tx_status_skb_add(mdev, wcid, tx_info->skb);
/* encode packet rate for no-skb packet id to fix up status reporting */
if (pid == MT_PACKET_ID_NO_SKB)
pid = MT_PACKET_ID_HAS_RATE |
(le16_to_cpu(txwi->rate) & MT_RXWI_RATE_INDEX);
txwi->pktid = pid;
if (mt76_is_skb_pktid(pid) && ampdu)
qsel = MT_QSEL_MGMT;
tx_info->info = FIELD_PREP(MT_TXD_INFO_QSEL, qsel) |
MT_TXD_INFO_80211;
if (!wcid || wcid->hw_key_idx == 0xff || wcid->sw_iv)
tx_info->info |= MT_TXD_INFO_WIV;
return 0;
}
EXPORT_SYMBOL_GPL(mt76x02_tx_prepare_skb);
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