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mac.c
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mac.c
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// SPDX-License-Identifier: ISC
/* Copyright (C) 2020 MediaTek Inc. */
#include <linux/etherdevice.h>
#include <linux/timekeeping.h>
#include "coredump.h"
#include "mt7915.h"
#include "../dma.h"
#include "mac.h"
#include "mcu.h"
#define to_rssi(field, rcpi) ((FIELD_GET(field, rcpi) - 220) / 2)
static const struct mt7915_dfs_radar_spec etsi_radar_specs = {
.pulse_th = { 110, -10, -80, 40, 5200, 128, 5200 },
.radar_pattern = {
[5] = { 1, 0, 6, 32, 28, 0, 990, 5010, 17, 1, 1 },
[6] = { 1, 0, 9, 32, 28, 0, 615, 5010, 27, 1, 1 },
[7] = { 1, 0, 15, 32, 28, 0, 240, 445, 27, 1, 1 },
[8] = { 1, 0, 12, 32, 28, 0, 240, 510, 42, 1, 1 },
[9] = { 1, 1, 0, 0, 0, 0, 2490, 3343, 14, 0, 0, 12, 32, 28, { }, 126 },
[10] = { 1, 1, 0, 0, 0, 0, 2490, 3343, 14, 0, 0, 15, 32, 24, { }, 126 },
[11] = { 1, 1, 0, 0, 0, 0, 823, 2510, 14, 0, 0, 18, 32, 28, { }, 54 },
[12] = { 1, 1, 0, 0, 0, 0, 823, 2510, 14, 0, 0, 27, 32, 24, { }, 54 },
},
};
static const struct mt7915_dfs_radar_spec fcc_radar_specs = {
.pulse_th = { 110, -10, -80, 40, 5200, 128, 5200 },
.radar_pattern = {
[0] = { 1, 0, 8, 32, 28, 0, 508, 3076, 13, 1, 1 },
[1] = { 1, 0, 12, 32, 28, 0, 140, 240, 17, 1, 1 },
[2] = { 1, 0, 8, 32, 28, 0, 190, 510, 22, 1, 1 },
[3] = { 1, 0, 6, 32, 28, 0, 190, 510, 32, 1, 1 },
[4] = { 1, 0, 9, 255, 28, 0, 323, 343, 13, 1, 32 },
},
};
static const struct mt7915_dfs_radar_spec jp_radar_specs = {
.pulse_th = { 110, -10, -80, 40, 5200, 128, 5200 },
.radar_pattern = {
[0] = { 1, 0, 8, 32, 28, 0, 508, 3076, 13, 1, 1 },
[1] = { 1, 0, 12, 32, 28, 0, 140, 240, 17, 1, 1 },
[2] = { 1, 0, 8, 32, 28, 0, 190, 510, 22, 1, 1 },
[3] = { 1, 0, 6, 32, 28, 0, 190, 510, 32, 1, 1 },
[4] = { 1, 0, 9, 255, 28, 0, 323, 343, 13, 1, 32 },
[13] = { 1, 0, 7, 32, 28, 0, 3836, 3856, 14, 1, 1 },
[14] = { 1, 0, 6, 32, 28, 0, 615, 5010, 110, 1, 1 },
[15] = { 1, 1, 0, 0, 0, 0, 15, 5010, 110, 0, 0, 12, 32, 28 },
},
};
static struct mt76_wcid *mt7915_rx_get_wcid(struct mt7915_dev *dev,
u16 idx, bool unicast)
{
struct mt7915_sta *sta;
struct mt76_wcid *wcid;
if (idx >= ARRAY_SIZE(dev->mt76.wcid))
return NULL;
wcid = rcu_dereference(dev->mt76.wcid[idx]);
if (unicast || !wcid)
return wcid;
if (!wcid->sta)
return NULL;
sta = container_of(wcid, struct mt7915_sta, wcid);
if (!sta->vif)
return NULL;
return &sta->vif->sta.wcid;
}
bool mt7915_mac_wtbl_update(struct mt7915_dev *dev, int idx, u32 mask)
{
mt76_rmw(dev, MT_WTBL_UPDATE, MT_WTBL_UPDATE_WLAN_IDX,
FIELD_PREP(MT_WTBL_UPDATE_WLAN_IDX, idx) | mask);
return mt76_poll(dev, MT_WTBL_UPDATE, MT_WTBL_UPDATE_BUSY,
0, 5000);
}
u32 mt7915_mac_wtbl_lmac_addr(struct mt7915_dev *dev, u16 wcid, u8 dw)
{
mt76_wr(dev, MT_WTBLON_TOP_WDUCR,
FIELD_PREP(MT_WTBLON_TOP_WDUCR_GROUP, (wcid >> 7)));
return MT_WTBL_LMAC_OFFS(wcid, dw);
}
static void mt7915_mac_sta_poll(struct mt7915_dev *dev)
{
static const u8 ac_to_tid[] = {
[IEEE80211_AC_BE] = 0,
[IEEE80211_AC_BK] = 1,
[IEEE80211_AC_VI] = 4,
[IEEE80211_AC_VO] = 6
};
struct ieee80211_sta *sta;
struct mt7915_sta *msta;
struct rate_info *rate;
u32 tx_time[IEEE80211_NUM_ACS], rx_time[IEEE80211_NUM_ACS];
LIST_HEAD(sta_poll_list);
int i;
spin_lock_bh(&dev->sta_poll_lock);
list_splice_init(&dev->sta_poll_list, &sta_poll_list);
spin_unlock_bh(&dev->sta_poll_lock);
rcu_read_lock();
while (true) {
bool clear = false;
u32 addr, val;
u16 idx;
s8 rssi[4];
u8 bw;
spin_lock_bh(&dev->sta_poll_lock);
if (list_empty(&sta_poll_list)) {
spin_unlock_bh(&dev->sta_poll_lock);
break;
}
msta = list_first_entry(&sta_poll_list,
struct mt7915_sta, poll_list);
list_del_init(&msta->poll_list);
spin_unlock_bh(&dev->sta_poll_lock);
idx = msta->wcid.idx;
/* refresh peer's airtime reporting */
addr = mt7915_mac_wtbl_lmac_addr(dev, idx, 20);
for (i = 0; i < IEEE80211_NUM_ACS; i++) {
u32 tx_last = msta->airtime_ac[i];
u32 rx_last = msta->airtime_ac[i + 4];
msta->airtime_ac[i] = mt76_rr(dev, addr);
msta->airtime_ac[i + 4] = mt76_rr(dev, addr + 4);
tx_time[i] = msta->airtime_ac[i] - tx_last;
rx_time[i] = msta->airtime_ac[i + 4] - rx_last;
if ((tx_last | rx_last) & BIT(30))
clear = true;
addr += 8;
}
if (clear) {
mt7915_mac_wtbl_update(dev, idx,
MT_WTBL_UPDATE_ADM_COUNT_CLEAR);
memset(msta->airtime_ac, 0, sizeof(msta->airtime_ac));
}
if (!msta->wcid.sta)
continue;
sta = container_of((void *)msta, struct ieee80211_sta,
drv_priv);
for (i = 0; i < IEEE80211_NUM_ACS; i++) {
u8 queue = mt76_connac_lmac_mapping(i);
u32 tx_cur = tx_time[queue];
u32 rx_cur = rx_time[queue];
u8 tid = ac_to_tid[i];
if (!tx_cur && !rx_cur)
continue;
ieee80211_sta_register_airtime(sta, tid, tx_cur,
rx_cur);
}
rate = &msta->wcid.rate;
switch (rate->bw) {
case RATE_INFO_BW_160:
bw = IEEE80211_STA_RX_BW_160;
break;
case RATE_INFO_BW_80:
bw = IEEE80211_STA_RX_BW_80;
break;
case RATE_INFO_BW_40:
bw = IEEE80211_STA_RX_BW_40;
break;
default:
bw = IEEE80211_STA_RX_BW_20;
break;
}
/* get signal strength of resp frames (CTS/BA/ACK) */
addr = mt7915_mac_wtbl_lmac_addr(dev, idx, 30);
val = mt76_rr(dev, addr);
rssi[0] = to_rssi(GENMASK(7, 0), val);
rssi[1] = to_rssi(GENMASK(15, 8), val);
rssi[2] = to_rssi(GENMASK(23, 16), val);
rssi[3] = to_rssi(GENMASK(31, 14), val);
msta->ack_signal =
mt76_rx_signal(msta->vif->phy->mt76->antenna_mask, rssi);
ewma_avg_signal_add(&msta->avg_ack_signal, -msta->ack_signal);
}
rcu_read_unlock();
}
void mt7915_mac_enable_rtscts(struct mt7915_dev *dev,
struct ieee80211_vif *vif, bool enable)
{
struct mt7915_vif *mvif = (struct mt7915_vif *)vif->drv_priv;
u32 addr;
addr = mt7915_mac_wtbl_lmac_addr(dev, mvif->sta.wcid.idx, 5);
if (enable)
mt76_set(dev, addr, BIT(5));
else
mt76_clear(dev, addr, BIT(5));
}
static void
mt7915_wed_check_ppe(struct mt7915_dev *dev, struct mt76_queue *q,
struct mt7915_sta *msta, struct sk_buff *skb,
u32 info)
{
struct ieee80211_vif *vif;
struct wireless_dev *wdev;
if (!msta || !msta->vif)
return;
if (!mt76_queue_is_wed_rx(q))
return;
if (!(info & MT_DMA_INFO_PPE_VLD))
return;
vif = container_of((void *)msta->vif, struct ieee80211_vif,
drv_priv);
wdev = ieee80211_vif_to_wdev(vif);
skb->dev = wdev->netdev;
mtk_wed_device_ppe_check(&dev->mt76.mmio.wed, skb,
FIELD_GET(MT_DMA_PPE_CPU_REASON, info),
FIELD_GET(MT_DMA_PPE_ENTRY, info));
}
static int
mt7915_mac_fill_rx(struct mt7915_dev *dev, struct sk_buff *skb,
enum mt76_rxq_id q, u32 *info)
{
struct mt76_rx_status *status = (struct mt76_rx_status *)skb->cb;
struct mt76_phy *mphy = &dev->mt76.phy;
struct mt7915_phy *phy = &dev->phy;
struct ieee80211_supported_band *sband;
__le32 *rxd = (__le32 *)skb->data;
__le32 *rxv = NULL;
u32 rxd0 = le32_to_cpu(rxd[0]);
u32 rxd1 = le32_to_cpu(rxd[1]);
u32 rxd2 = le32_to_cpu(rxd[2]);
u32 rxd3 = le32_to_cpu(rxd[3]);
u32 rxd4 = le32_to_cpu(rxd[4]);
u32 csum_mask = MT_RXD0_NORMAL_IP_SUM | MT_RXD0_NORMAL_UDP_TCP_SUM;
bool unicast, insert_ccmp_hdr = false;
u8 remove_pad, amsdu_info;
u8 mode = 0, qos_ctl = 0;
struct mt7915_sta *msta = NULL;
u32 csum_status = *(u32 *)skb->cb;
bool hdr_trans;
u16 hdr_gap;
u16 seq_ctrl = 0;
__le16 fc = 0;
int idx;
memset(status, 0, sizeof(*status));
if ((rxd1 & MT_RXD1_NORMAL_BAND_IDX) && !phy->mt76->band_idx) {
mphy = dev->mt76.phys[MT_BAND1];
if (!mphy)
return -EINVAL;
phy = mphy->priv;
status->phy_idx = 1;
}
if (!test_bit(MT76_STATE_RUNNING, &mphy->state))
return -EINVAL;
if (rxd2 & MT_RXD2_NORMAL_AMSDU_ERR)
return -EINVAL;
hdr_trans = rxd2 & MT_RXD2_NORMAL_HDR_TRANS;
if (hdr_trans && (rxd1 & MT_RXD1_NORMAL_CM))
return -EINVAL;
/* ICV error or CCMP/BIP/WPI MIC error */
if (rxd1 & MT_RXD1_NORMAL_ICV_ERR)
status->flag |= RX_FLAG_ONLY_MONITOR;
unicast = FIELD_GET(MT_RXD3_NORMAL_ADDR_TYPE, rxd3) == MT_RXD3_NORMAL_U2M;
idx = FIELD_GET(MT_RXD1_NORMAL_WLAN_IDX, rxd1);
status->wcid = mt7915_rx_get_wcid(dev, idx, unicast);
if (status->wcid) {
msta = container_of(status->wcid, struct mt7915_sta, wcid);
spin_lock_bh(&dev->sta_poll_lock);
if (list_empty(&msta->poll_list))
list_add_tail(&msta->poll_list, &dev->sta_poll_list);
spin_unlock_bh(&dev->sta_poll_lock);
}
status->freq = mphy->chandef.chan->center_freq;
status->band = mphy->chandef.chan->band;
if (status->band == NL80211_BAND_5GHZ)
sband = &mphy->sband_5g.sband;
else if (status->band == NL80211_BAND_6GHZ)
sband = &mphy->sband_6g.sband;
else
sband = &mphy->sband_2g.sband;
if (!sband->channels)
return -EINVAL;
if ((rxd0 & csum_mask) == csum_mask &&
!(csum_status & (BIT(0) | BIT(2) | BIT(3))))
skb->ip_summed = CHECKSUM_UNNECESSARY;
if (rxd1 & MT_RXD1_NORMAL_FCS_ERR)
status->flag |= RX_FLAG_FAILED_FCS_CRC;
if (rxd1 & MT_RXD1_NORMAL_TKIP_MIC_ERR)
status->flag |= RX_FLAG_MMIC_ERROR;
if (FIELD_GET(MT_RXD1_NORMAL_SEC_MODE, rxd1) != 0 &&
!(rxd1 & (MT_RXD1_NORMAL_CLM | MT_RXD1_NORMAL_CM))) {
status->flag |= RX_FLAG_DECRYPTED;
status->flag |= RX_FLAG_IV_STRIPPED;
status->flag |= RX_FLAG_MMIC_STRIPPED | RX_FLAG_MIC_STRIPPED;
}
remove_pad = FIELD_GET(MT_RXD2_NORMAL_HDR_OFFSET, rxd2);
if (rxd2 & MT_RXD2_NORMAL_MAX_LEN_ERROR)
return -EINVAL;
rxd += 6;
if (rxd1 & MT_RXD1_NORMAL_GROUP_4) {
u32 v0 = le32_to_cpu(rxd[0]);
u32 v2 = le32_to_cpu(rxd[2]);
fc = cpu_to_le16(FIELD_GET(MT_RXD6_FRAME_CONTROL, v0));
qos_ctl = FIELD_GET(MT_RXD8_QOS_CTL, v2);
seq_ctrl = FIELD_GET(MT_RXD8_SEQ_CTRL, v2);
rxd += 4;
if ((u8 *)rxd - skb->data >= skb->len)
return -EINVAL;
}
if (rxd1 & MT_RXD1_NORMAL_GROUP_1) {
u8 *data = (u8 *)rxd;
if (status->flag & RX_FLAG_DECRYPTED) {
switch (FIELD_GET(MT_RXD1_NORMAL_SEC_MODE, rxd1)) {
case MT_CIPHER_AES_CCMP:
case MT_CIPHER_CCMP_CCX:
case MT_CIPHER_CCMP_256:
insert_ccmp_hdr =
FIELD_GET(MT_RXD2_NORMAL_FRAG, rxd2);
fallthrough;
case MT_CIPHER_TKIP:
case MT_CIPHER_TKIP_NO_MIC:
case MT_CIPHER_GCMP:
case MT_CIPHER_GCMP_256:
status->iv[0] = data[5];
status->iv[1] = data[4];
status->iv[2] = data[3];
status->iv[3] = data[2];
status->iv[4] = data[1];
status->iv[5] = data[0];
break;
default:
break;
}
}
rxd += 4;
if ((u8 *)rxd - skb->data >= skb->len)
return -EINVAL;
}
if (rxd1 & MT_RXD1_NORMAL_GROUP_2) {
status->timestamp = le32_to_cpu(rxd[0]);
status->flag |= RX_FLAG_MACTIME_START;
if (!(rxd2 & MT_RXD2_NORMAL_NON_AMPDU)) {
status->flag |= RX_FLAG_AMPDU_DETAILS;
/* all subframes of an A-MPDU have the same timestamp */
if (phy->rx_ampdu_ts != status->timestamp) {
if (!++phy->ampdu_ref)
phy->ampdu_ref++;
}
phy->rx_ampdu_ts = status->timestamp;
status->ampdu_ref = phy->ampdu_ref;
}
rxd += 2;
if ((u8 *)rxd - skb->data >= skb->len)
return -EINVAL;
}
/* RXD Group 3 - P-RXV */
if (rxd1 & MT_RXD1_NORMAL_GROUP_3) {
u32 v0, v1;
int ret;
rxv = rxd;
rxd += 2;
if ((u8 *)rxd - skb->data >= skb->len)
return -EINVAL;
v0 = le32_to_cpu(rxv[0]);
v1 = le32_to_cpu(rxv[1]);
if (v0 & MT_PRXV_HT_AD_CODE)
status->enc_flags |= RX_ENC_FLAG_LDPC;
status->chains = mphy->antenna_mask;
status->chain_signal[0] = to_rssi(MT_PRXV_RCPI0, v1);
status->chain_signal[1] = to_rssi(MT_PRXV_RCPI1, v1);
status->chain_signal[2] = to_rssi(MT_PRXV_RCPI2, v1);
status->chain_signal[3] = to_rssi(MT_PRXV_RCPI3, v1);
/* RXD Group 5 - C-RXV */
if (rxd1 & MT_RXD1_NORMAL_GROUP_5) {
rxd += 18;
if ((u8 *)rxd - skb->data >= skb->len)
return -EINVAL;
}
if (!is_mt7915(&dev->mt76) || (rxd1 & MT_RXD1_NORMAL_GROUP_5)) {
ret = mt76_connac2_mac_fill_rx_rate(&dev->mt76, status,
sband, rxv, &mode);
if (ret < 0)
return ret;
}
}
amsdu_info = FIELD_GET(MT_RXD4_NORMAL_PAYLOAD_FORMAT, rxd4);
status->amsdu = !!amsdu_info;
if (status->amsdu) {
status->first_amsdu = amsdu_info == MT_RXD4_FIRST_AMSDU_FRAME;
status->last_amsdu = amsdu_info == MT_RXD4_LAST_AMSDU_FRAME;
}
hdr_gap = (u8 *)rxd - skb->data + 2 * remove_pad;
if (hdr_trans && ieee80211_has_morefrags(fc)) {
struct ieee80211_vif *vif;
int err;
if (!msta || !msta->vif)
return -EINVAL;
vif = container_of((void *)msta->vif, struct ieee80211_vif,
drv_priv);
err = mt76_connac2_reverse_frag0_hdr_trans(vif, skb, hdr_gap);
if (err)
return err;
hdr_trans = false;
} else {
int pad_start = 0;
skb_pull(skb, hdr_gap);
if (!hdr_trans && status->amsdu) {
pad_start = ieee80211_get_hdrlen_from_skb(skb);
} else if (hdr_trans && (rxd2 & MT_RXD2_NORMAL_HDR_TRANS_ERROR)) {
/*
* When header translation failure is indicated,
* the hardware will insert an extra 2-byte field
* containing the data length after the protocol
* type field. This happens either when the LLC-SNAP
* pattern did not match, or if a VLAN header was
* detected.
*/
pad_start = 12;
if (get_unaligned_be16(skb->data + pad_start) == ETH_P_8021Q)
pad_start += 4;
else
pad_start = 0;
}
if (pad_start) {
memmove(skb->data + 2, skb->data, pad_start);
skb_pull(skb, 2);
}
}
if (!hdr_trans) {
struct ieee80211_hdr *hdr;
if (insert_ccmp_hdr) {
u8 key_id = FIELD_GET(MT_RXD1_NORMAL_KEY_ID, rxd1);
mt76_insert_ccmp_hdr(skb, key_id);
}
hdr = mt76_skb_get_hdr(skb);
fc = hdr->frame_control;
if (ieee80211_is_data_qos(fc)) {
seq_ctrl = le16_to_cpu(hdr->seq_ctrl);
qos_ctl = *ieee80211_get_qos_ctl(hdr);
}
} else {
status->flag |= RX_FLAG_8023;
mt7915_wed_check_ppe(dev, &dev->mt76.q_rx[q], msta, skb,
*info);
}
if (rxv && mode >= MT_PHY_TYPE_HE_SU && !(status->flag & RX_FLAG_8023))
mt76_connac2_mac_decode_he_radiotap(&dev->mt76, skb, rxv, mode);
if (!status->wcid || !ieee80211_is_data_qos(fc))
return 0;
status->aggr = unicast &&
!ieee80211_is_qos_nullfunc(fc);
status->qos_ctl = qos_ctl;
status->seqno = IEEE80211_SEQ_TO_SN(seq_ctrl);
return 0;
}
static void
mt7915_mac_fill_rx_vector(struct mt7915_dev *dev, struct sk_buff *skb)
{
#ifdef CONFIG_NL80211_TESTMODE
struct mt7915_phy *phy = &dev->phy;
__le32 *rxd = (__le32 *)skb->data;
__le32 *rxv_hdr = rxd + 2;
__le32 *rxv = rxd + 4;
u32 rcpi, ib_rssi, wb_rssi, v20, v21;
u8 band_idx;
s32 foe;
u8 snr;
int i;
band_idx = le32_get_bits(rxv_hdr[1], MT_RXV_HDR_BAND_IDX);
if (band_idx && !phy->mt76->band_idx) {
phy = mt7915_ext_phy(dev);
if (!phy)
goto out;
}
rcpi = le32_to_cpu(rxv[6]);
ib_rssi = le32_to_cpu(rxv[7]);
wb_rssi = le32_to_cpu(rxv[8]) >> 5;
for (i = 0; i < 4; i++, rcpi >>= 8, ib_rssi >>= 8, wb_rssi >>= 9) {
if (i == 3)
wb_rssi = le32_to_cpu(rxv[9]);
phy->test.last_rcpi[i] = rcpi & 0xff;
phy->test.last_ib_rssi[i] = ib_rssi & 0xff;
phy->test.last_wb_rssi[i] = wb_rssi & 0xff;
}
v20 = le32_to_cpu(rxv[20]);
v21 = le32_to_cpu(rxv[21]);
foe = FIELD_GET(MT_CRXV_FOE_LO, v20) |
(FIELD_GET(MT_CRXV_FOE_HI, v21) << MT_CRXV_FOE_SHIFT);
snr = FIELD_GET(MT_CRXV_SNR, v20) - 16;
phy->test.last_freq_offset = foe;
phy->test.last_snr = snr;
out:
#endif
dev_kfree_skb(skb);
}
static void
mt7915_mac_write_txwi_tm(struct mt7915_phy *phy, __le32 *txwi,
struct sk_buff *skb)
{
#ifdef CONFIG_NL80211_TESTMODE
struct mt76_testmode_data *td = &phy->mt76->test;
const struct ieee80211_rate *r;
u8 bw, mode, nss = td->tx_rate_nss;
u8 rate_idx = td->tx_rate_idx;
u16 rateval = 0;
u32 val;
bool cck = false;
int band;
if (skb != phy->mt76->test.tx_skb)
return;
switch (td->tx_rate_mode) {
case MT76_TM_TX_MODE_HT:
nss = 1 + (rate_idx >> 3);
mode = MT_PHY_TYPE_HT;
break;
case MT76_TM_TX_MODE_VHT:
mode = MT_PHY_TYPE_VHT;
break;
case MT76_TM_TX_MODE_HE_SU:
mode = MT_PHY_TYPE_HE_SU;
break;
case MT76_TM_TX_MODE_HE_EXT_SU:
mode = MT_PHY_TYPE_HE_EXT_SU;
break;
case MT76_TM_TX_MODE_HE_TB:
mode = MT_PHY_TYPE_HE_TB;
break;
case MT76_TM_TX_MODE_HE_MU:
mode = MT_PHY_TYPE_HE_MU;
break;
case MT76_TM_TX_MODE_CCK:
cck = true;
fallthrough;
case MT76_TM_TX_MODE_OFDM:
band = phy->mt76->chandef.chan->band;
if (band == NL80211_BAND_2GHZ && !cck)
rate_idx += 4;
r = &phy->mt76->hw->wiphy->bands[band]->bitrates[rate_idx];
val = cck ? r->hw_value_short : r->hw_value;
mode = val >> 8;
rate_idx = val & 0xff;
break;
default:
mode = MT_PHY_TYPE_OFDM;
break;
}
switch (phy->mt76->chandef.width) {
case NL80211_CHAN_WIDTH_40:
bw = 1;
break;
case NL80211_CHAN_WIDTH_80:
bw = 2;
break;
case NL80211_CHAN_WIDTH_80P80:
case NL80211_CHAN_WIDTH_160:
bw = 3;
break;
default:
bw = 0;
break;
}
if (td->tx_rate_stbc && nss == 1) {
nss++;
rateval |= MT_TX_RATE_STBC;
}
rateval |= FIELD_PREP(MT_TX_RATE_IDX, rate_idx) |
FIELD_PREP(MT_TX_RATE_MODE, mode) |
FIELD_PREP(MT_TX_RATE_NSS, nss - 1);
txwi[2] |= cpu_to_le32(MT_TXD2_FIX_RATE);
le32p_replace_bits(&txwi[3], 1, MT_TXD3_REM_TX_COUNT);
if (td->tx_rate_mode < MT76_TM_TX_MODE_HT)
txwi[3] |= cpu_to_le32(MT_TXD3_BA_DISABLE);
val = MT_TXD6_FIXED_BW |
FIELD_PREP(MT_TXD6_BW, bw) |
FIELD_PREP(MT_TXD6_TX_RATE, rateval) |
FIELD_PREP(MT_TXD6_SGI, td->tx_rate_sgi);
/* for HE_SU/HE_EXT_SU PPDU
* - 1x, 2x, 4x LTF + 0.8us GI
* - 2x LTF + 1.6us GI, 4x LTF + 3.2us GI
* for HE_MU PPDU
* - 2x, 4x LTF + 0.8us GI
* - 2x LTF + 1.6us GI, 4x LTF + 3.2us GI
* for HE_TB PPDU
* - 1x, 2x LTF + 1.6us GI
* - 4x LTF + 3.2us GI
*/
if (mode >= MT_PHY_TYPE_HE_SU)
val |= FIELD_PREP(MT_TXD6_HELTF, td->tx_ltf);
if (td->tx_rate_ldpc || (bw > 0 && mode >= MT_PHY_TYPE_HE_SU))
val |= MT_TXD6_LDPC;
txwi[3] &= ~cpu_to_le32(MT_TXD3_SN_VALID);
txwi[6] |= cpu_to_le32(val);
txwi[7] |= cpu_to_le32(FIELD_PREP(MT_TXD7_SPE_IDX,
phy->test.spe_idx));
#endif
}
void mt7915_mac_write_txwi(struct mt76_dev *dev, __le32 *txwi,
struct sk_buff *skb, struct mt76_wcid *wcid, int pid,
struct ieee80211_key_conf *key,
enum mt76_txq_id qid, u32 changed)
{
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
u8 phy_idx = (info->hw_queue & MT_TX_HW_QUEUE_PHY) >> 2;
struct mt76_phy *mphy = &dev->phy;
if (phy_idx && dev->phys[MT_BAND1])
mphy = dev->phys[MT_BAND1];
mt76_connac2_mac_write_txwi(dev, txwi, skb, wcid, key, pid, qid, changed);
if (mt76_testmode_enabled(mphy))
mt7915_mac_write_txwi_tm(mphy->priv, txwi, skb);
}
int mt7915_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 ieee80211_hdr *hdr = (struct ieee80211_hdr *)tx_info->skb->data;
struct mt7915_dev *dev = container_of(mdev, struct mt7915_dev, mt76);
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_info->skb);
struct ieee80211_key_conf *key = info->control.hw_key;
struct ieee80211_vif *vif = info->control.vif;
struct mt76_connac_fw_txp *txp;
struct mt76_txwi_cache *t;
int id, i, nbuf = tx_info->nbuf - 1;
u8 *txwi = (u8 *)txwi_ptr;
int pid;
if (unlikely(tx_info->skb->len <= ETH_HLEN))
return -EINVAL;
if (!wcid)
wcid = &dev->mt76.global_wcid;
if (sta) {
struct mt7915_sta *msta;
msta = (struct mt7915_sta *)sta->drv_priv;
if (time_after(jiffies, msta->jiffies + HZ / 4)) {
info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS;
msta->jiffies = jiffies;
}
}
t = (struct mt76_txwi_cache *)(txwi + mdev->drv->txwi_size);
t->skb = tx_info->skb;
id = mt76_token_consume(mdev, &t);
if (id < 0)
return id;
pid = mt76_tx_status_skb_add(mdev, wcid, tx_info->skb);
mt7915_mac_write_txwi(mdev, txwi_ptr, tx_info->skb, wcid, pid, key,
qid, 0);
txp = (struct mt76_connac_fw_txp *)(txwi + MT_TXD_SIZE);
for (i = 0; i < nbuf; i++) {
txp->buf[i] = cpu_to_le32(tx_info->buf[i + 1].addr);
txp->len[i] = cpu_to_le16(tx_info->buf[i + 1].len);
}
txp->nbuf = nbuf;
txp->flags = cpu_to_le16(MT_CT_INFO_APPLY_TXD | MT_CT_INFO_FROM_HOST);
if (!key)
txp->flags |= cpu_to_le16(MT_CT_INFO_NONE_CIPHER_FRAME);
if (!(info->flags & IEEE80211_TX_CTL_HW_80211_ENCAP) &&
ieee80211_is_mgmt(hdr->frame_control))
txp->flags |= cpu_to_le16(MT_CT_INFO_MGMT_FRAME);
if (vif) {
struct mt7915_vif *mvif = (struct mt7915_vif *)vif->drv_priv;
txp->bss_idx = mvif->mt76.idx;
}
txp->token = cpu_to_le16(id);
if (test_bit(MT_WCID_FLAG_4ADDR, &wcid->flags))
txp->rept_wds_wcid = cpu_to_le16(wcid->idx);
else
txp->rept_wds_wcid = cpu_to_le16(0x3ff);
tx_info->skb = DMA_DUMMY_DATA;
/* pass partial skb header to fw */
tx_info->buf[1].len = MT_CT_PARSE_LEN;
tx_info->buf[1].skip_unmap = true;
tx_info->nbuf = MT_CT_DMA_BUF_NUM;
return 0;
}
u32 mt7915_wed_init_buf(void *ptr, dma_addr_t phys, int token_id)
{
struct mt76_connac_fw_txp *txp = ptr + MT_TXD_SIZE;
__le32 *txwi = ptr;
u32 val;
memset(ptr, 0, MT_TXD_SIZE + sizeof(*txp));
val = FIELD_PREP(MT_TXD0_TX_BYTES, MT_TXD_SIZE) |
FIELD_PREP(MT_TXD0_PKT_FMT, MT_TX_TYPE_CT);
txwi[0] = cpu_to_le32(val);
val = MT_TXD1_LONG_FORMAT |
FIELD_PREP(MT_TXD1_HDR_FORMAT, MT_HDR_FORMAT_802_3);
txwi[1] = cpu_to_le32(val);
txp->token = cpu_to_le16(token_id);
txp->nbuf = 1;
txp->buf[0] = cpu_to_le32(phys + MT_TXD_SIZE + sizeof(*txp));
return MT_TXD_SIZE + sizeof(*txp);
}
static void
mt7915_tx_check_aggr(struct ieee80211_sta *sta, __le32 *txwi)
{
struct mt7915_sta *msta;
u16 fc, tid;
u32 val;
if (!sta || !(sta->deflink.ht_cap.ht_supported || sta->deflink.he_cap.has_he))
return;
tid = le32_get_bits(txwi[1], MT_TXD1_TID);
if (tid >= 6) /* skip VO queue */
return;
val = le32_to_cpu(txwi[2]);
fc = FIELD_GET(MT_TXD2_FRAME_TYPE, val) << 2 |
FIELD_GET(MT_TXD2_SUB_TYPE, val) << 4;
if (unlikely(fc != (IEEE80211_FTYPE_DATA | IEEE80211_STYPE_QOS_DATA)))
return;
msta = (struct mt7915_sta *)sta->drv_priv;
if (!test_and_set_bit(tid, &msta->ampdu_state))
ieee80211_start_tx_ba_session(sta, tid, 0);
}
static void
mt7915_txwi_free(struct mt7915_dev *dev, struct mt76_txwi_cache *t,
struct ieee80211_sta *sta, struct list_head *free_list)
{
struct mt76_dev *mdev = &dev->mt76;
struct mt7915_sta *msta;
struct mt76_wcid *wcid;
__le32 *txwi;
u16 wcid_idx;
mt76_connac_txp_skb_unmap(mdev, t);
if (!t->skb)
goto out;
txwi = (__le32 *)mt76_get_txwi_ptr(mdev, t);
if (sta) {
wcid = (struct mt76_wcid *)sta->drv_priv;
wcid_idx = wcid->idx;
} else {
wcid_idx = le32_get_bits(txwi[1], MT_TXD1_WLAN_IDX);
wcid = rcu_dereference(dev->mt76.wcid[wcid_idx]);
if (wcid && wcid->sta) {
msta = container_of(wcid, struct mt7915_sta, wcid);
sta = container_of((void *)msta, struct ieee80211_sta,
drv_priv);
spin_lock_bh(&dev->sta_poll_lock);
if (list_empty(&msta->poll_list))
list_add_tail(&msta->poll_list, &dev->sta_poll_list);
spin_unlock_bh(&dev->sta_poll_lock);
}
}
if (sta && likely(t->skb->protocol != cpu_to_be16(ETH_P_PAE)))
mt7915_tx_check_aggr(sta, txwi);
__mt76_tx_complete_skb(mdev, wcid_idx, t->skb, free_list);
out:
t->skb = NULL;
mt76_put_txwi(mdev, t);
}
static void
mt7915_mac_tx_free_prepare(struct mt7915_dev *dev)
{
struct mt76_dev *mdev = &dev->mt76;
struct mt76_phy *mphy_ext = mdev->phys[MT_BAND1];
/* clean DMA queues and unmap buffers first */
mt76_queue_tx_cleanup(dev, dev->mphy.q_tx[MT_TXQ_PSD], false);
mt76_queue_tx_cleanup(dev, dev->mphy.q_tx[MT_TXQ_BE], false);
if (mphy_ext) {
mt76_queue_tx_cleanup(dev, mphy_ext->q_tx[MT_TXQ_PSD], false);
mt76_queue_tx_cleanup(dev, mphy_ext->q_tx[MT_TXQ_BE], false);
}
}
static void
mt7915_mac_tx_free_done(struct mt7915_dev *dev,
struct list_head *free_list, bool wake)
{
struct sk_buff *skb, *tmp;
mt7915_mac_sta_poll(dev);
if (wake)
mt76_set_tx_blocked(&dev->mt76, false);
mt76_worker_schedule(&dev->mt76.tx_worker);
list_for_each_entry_safe(skb, tmp, free_list, list) {
skb_list_del_init(skb);
napi_consume_skb(skb, 1);
}
}
static void
mt7915_mac_tx_free(struct mt7915_dev *dev, void *data, int len)
{
struct mt76_connac_tx_free *free = data;
__le32 *tx_info = (__le32 *)(data + sizeof(*free));
struct mt76_dev *mdev = &dev->mt76;
struct mt76_txwi_cache *txwi;
struct ieee80211_sta *sta = NULL;
LIST_HEAD(free_list);
void *end = data + len;
bool v3, wake = false;
u16 total, count = 0;
u32 txd = le32_to_cpu(free->txd);
__le32 *cur_info;
mt7915_mac_tx_free_prepare(dev);
total = le16_get_bits(free->ctrl, MT_TX_FREE_MSDU_CNT);
v3 = (FIELD_GET(MT_TX_FREE_VER, txd) == 0x4);
for (cur_info = tx_info; count < total; cur_info++) {
u32 msdu, info;
u8 i;
if (WARN_ON_ONCE((void *)cur_info >= end))
return;
/*
* 1'b1: new wcid pair.
* 1'b0: msdu_id with the same 'wcid pair' as above.
*/
info = le32_to_cpu(*cur_info);
if (info & MT_TX_FREE_PAIR) {
struct mt7915_sta *msta;
struct mt76_wcid *wcid;
struct mt7915_phy *phy;
u16 idx;
idx = FIELD_GET(MT_TX_FREE_WLAN_ID, info);
wcid = rcu_dereference(dev->mt76.wcid[idx]);
sta = wcid_to_sta(wcid);
if (!sta)
continue;
msta = container_of(wcid, struct mt7915_sta, wcid);
phy = msta->vif->phy;
spin_lock_bh(&dev->sta_poll_lock);
if (list_empty(&msta->poll_list))
list_add_tail(&msta->poll_list, &dev->sta_poll_list);
spin_unlock_bh(&dev->sta_poll_lock);
spin_lock_bh(&phy->stats_lock);
if (list_empty(&msta->stats_list))
list_add_tail(&msta->stats_list, &phy->stats_list);
spin_unlock_bh(&phy->stats_lock);
continue;
}
if (v3 && (info & MT_TX_FREE_MPDU_HEADER))
continue;
for (i = 0; i < 1 + v3; i++) {
if (v3) {
msdu = (info >> (15 * i)) & MT_TX_FREE_MSDU_ID_V3;
if (msdu == MT_TX_FREE_MSDU_ID_V3)
continue;
} else {
msdu = FIELD_GET(MT_TX_FREE_MSDU_ID, info);
}
count++;
txwi = mt76_token_release(mdev, msdu, &wake);
if (!txwi)
continue;