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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
11void 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}
33EXPORT_SYMBOL_GPL(mt76x02_tx);
34
35void mt76x02_queue_rx_skb(struct mt76_dev *mdev, enum mt76_rxq_id q,
36 struct sk_buff *skb, u32 *info)
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}
54EXPORT_SYMBOL_GPL(mt76x02_queue_rx_skb);
55
56s8 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
96s8 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
110void 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}
121EXPORT_SYMBOL_GPL(mt76x02_tx_set_txpwr_auto);
122
123bool 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}
135EXPORT_SYMBOL_GPL(mt76x02_tx_status_data);
136
137int 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}
183EXPORT_SYMBOL_GPL(mt76x02_tx_prepare_skb);
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
11void 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}
33EXPORT_SYMBOL_GPL(mt76x02_tx);
34
35void mt76x02_queue_rx_skb(struct mt76_dev *mdev, enum mt76_rxq_id q,
36 struct sk_buff *skb, u32 *info)
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}
54EXPORT_SYMBOL_GPL(mt76x02_queue_rx_skb);
55
56s8 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
96s8 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
110void 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}
121EXPORT_SYMBOL_GPL(mt76x02_tx_set_txpwr_auto);
122
123bool 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}
135EXPORT_SYMBOL_GPL(mt76x02_tx_status_data);
136
137int 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}
183EXPORT_SYMBOL_GPL(mt76x02_tx_prepare_skb);