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mt76: connac: move connac2_mac_write_txwi in mt76_connac module
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mac_write_txwi code is shared between connac2 devices (mt7915 and
mt7921). Move it in connac module.

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
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Lorenzo Bianconi authored and Felix Fietkau committed Jul 11, 2022
1 parent 9021195 commit 182071c
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Showing 10 changed files with 299 additions and 472 deletions.
6 changes: 6 additions & 0 deletions drivers/net/wireless/mediatek/mt76/mt76_connac.h
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Original file line number Diff line number Diff line change
Expand Up @@ -12,6 +12,8 @@
#define MT76_CONNAC_MAX_SCHED_SCAN_SSID 10
#define MT76_CONNAC_MAX_SCAN_MATCH 16

#define MT76_CONNAC_MAX_WMM_SETS 4

#define MT76_CONNAC_COREDUMP_TIMEOUT (HZ / 20)
#define MT76_CONNAC_COREDUMP_SZ (1300 * 1024)

Expand Down Expand Up @@ -244,5 +246,9 @@ void mt76_connac_pm_queue_skb(struct ieee80211_hw *hw,
struct sk_buff *skb);
void mt76_connac_pm_dequeue_skbs(struct mt76_phy *phy,
struct mt76_connac_pm *pm);
void mt76_connac2_mac_write_txwi(struct mt76_dev *dev, __le32 *txwi,
struct sk_buff *skb, struct mt76_wcid *wcid,
struct ieee80211_key_conf *key, int pid,
u32 changed);

#endif /* __MT76_CONNAC_H */
284 changes: 284 additions & 0 deletions drivers/net/wireless/mediatek/mt76/mt76_connac_mac.c
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Original file line number Diff line number Diff line change
Expand Up @@ -2,6 +2,7 @@
/* Copyright (C) 2020 MediaTek Inc. */

#include "mt76_connac.h"
#include "mt76_connac2_mac.h"

int mt76_connac_pm_wake(struct mt76_phy *phy, struct mt76_connac_pm *pm)
{
Expand Down Expand Up @@ -115,3 +116,286 @@ void mt76_connac_pm_dequeue_skbs(struct mt76_phy *phy,
mt76_worker_schedule(&phy->dev->tx_worker);
}
EXPORT_SYMBOL_GPL(mt76_connac_pm_dequeue_skbs);

static u16
mt76_connac2_mac_tx_rate_val(struct mt76_phy *mphy, struct ieee80211_vif *vif,
bool beacon, bool mcast)
{
u8 mode = 0, band = mphy->chandef.chan->band;
int rateidx = 0, mcast_rate;

if (!vif)
goto legacy;

if (is_mt7921(mphy->dev)) {
rateidx = ffs(vif->bss_conf.basic_rates) - 1;
goto legacy;
}

if (beacon) {
struct cfg80211_bitrate_mask *mask;

mask = &vif->bss_conf.beacon_tx_rate;
if (hweight16(mask->control[band].he_mcs[0]) == 1) {
rateidx = ffs(mask->control[band].he_mcs[0]) - 1;
mode = MT_PHY_TYPE_HE_SU;
goto out;
} else if (hweight16(mask->control[band].vht_mcs[0]) == 1) {
rateidx = ffs(mask->control[band].vht_mcs[0]) - 1;
mode = MT_PHY_TYPE_VHT;
goto out;
} else if (hweight8(mask->control[band].ht_mcs[0]) == 1) {
rateidx = ffs(mask->control[band].ht_mcs[0]) - 1;
mode = MT_PHY_TYPE_HT;
goto out;
} else if (hweight32(mask->control[band].legacy) == 1) {
rateidx = ffs(mask->control[band].legacy) - 1;
goto legacy;
}
}

mcast_rate = vif->bss_conf.mcast_rate[band];
if (mcast && mcast_rate > 0)
rateidx = mcast_rate - 1;
else
rateidx = ffs(vif->bss_conf.basic_rates) - 1;

legacy:
rateidx = mt76_calculate_default_rate(mphy, rateidx);
mode = rateidx >> 8;
rateidx &= GENMASK(7, 0);

out:
return FIELD_PREP(MT_TX_RATE_IDX, rateidx) |
FIELD_PREP(MT_TX_RATE_MODE, mode);
}

static void
mt76_connac2_mac_write_txwi_8023(__le32 *txwi, struct sk_buff *skb,
struct mt76_wcid *wcid)
{
u8 tid = skb->priority & IEEE80211_QOS_CTL_TID_MASK;
u8 fc_type, fc_stype;
u16 ethertype;
bool wmm = false;
u32 val;

if (wcid->sta) {
struct ieee80211_sta *sta;

sta = container_of((void *)wcid, struct ieee80211_sta, drv_priv);
wmm = sta->wme;
}

val = FIELD_PREP(MT_TXD1_HDR_FORMAT, MT_HDR_FORMAT_802_3) |
FIELD_PREP(MT_TXD1_TID, tid);

ethertype = get_unaligned_be16(&skb->data[12]);
if (ethertype >= ETH_P_802_3_MIN)
val |= MT_TXD1_ETH_802_3;

txwi[1] |= cpu_to_le32(val);

fc_type = IEEE80211_FTYPE_DATA >> 2;
fc_stype = wmm ? IEEE80211_STYPE_QOS_DATA >> 4 : 0;

val = FIELD_PREP(MT_TXD2_FRAME_TYPE, fc_type) |
FIELD_PREP(MT_TXD2_SUB_TYPE, fc_stype);

txwi[2] |= cpu_to_le32(val);

val = FIELD_PREP(MT_TXD7_TYPE, fc_type) |
FIELD_PREP(MT_TXD7_SUB_TYPE, fc_stype);

txwi[7] |= cpu_to_le32(val);
}

static void
mt76_connac2_mac_write_txwi_80211(struct mt76_dev *dev, __le32 *txwi,
struct sk_buff *skb,
struct ieee80211_key_conf *key)
{
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data;
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
bool multicast = is_multicast_ether_addr(hdr->addr1);
u8 tid = skb->priority & IEEE80211_QOS_CTL_TID_MASK;
__le16 fc = hdr->frame_control;
u8 fc_type, fc_stype;
u32 val;

if (ieee80211_is_action(fc) &&
mgmt->u.action.category == WLAN_CATEGORY_BACK &&
mgmt->u.action.u.addba_req.action_code == WLAN_ACTION_ADDBA_REQ) {
u16 capab = le16_to_cpu(mgmt->u.action.u.addba_req.capab);

txwi[5] |= cpu_to_le32(MT_TXD5_ADD_BA);
tid = (capab >> 2) & IEEE80211_QOS_CTL_TID_MASK;
} else if (ieee80211_is_back_req(hdr->frame_control)) {
struct ieee80211_bar *bar = (struct ieee80211_bar *)hdr;
u16 control = le16_to_cpu(bar->control);

tid = FIELD_GET(IEEE80211_BAR_CTRL_TID_INFO_MASK, control);
}

val = FIELD_PREP(MT_TXD1_HDR_FORMAT, MT_HDR_FORMAT_802_11) |
FIELD_PREP(MT_TXD1_HDR_INFO,
ieee80211_get_hdrlen_from_skb(skb) / 2) |
FIELD_PREP(MT_TXD1_TID, tid);

txwi[1] |= cpu_to_le32(val);

fc_type = (le16_to_cpu(fc) & IEEE80211_FCTL_FTYPE) >> 2;
fc_stype = (le16_to_cpu(fc) & IEEE80211_FCTL_STYPE) >> 4;

val = FIELD_PREP(MT_TXD2_FRAME_TYPE, fc_type) |
FIELD_PREP(MT_TXD2_SUB_TYPE, fc_stype) |
FIELD_PREP(MT_TXD2_MULTICAST, multicast);

if (key && multicast && ieee80211_is_robust_mgmt_frame(skb) &&
key->cipher == WLAN_CIPHER_SUITE_AES_CMAC) {
val |= MT_TXD2_BIP;
txwi[3] &= ~cpu_to_le32(MT_TXD3_PROTECT_FRAME);
}

if (!ieee80211_is_data(fc) || multicast ||
info->flags & IEEE80211_TX_CTL_USE_MINRATE)
val |= MT_TXD2_FIX_RATE;

txwi[2] |= cpu_to_le32(val);

if (ieee80211_is_beacon(fc)) {
txwi[3] &= ~cpu_to_le32(MT_TXD3_SW_POWER_MGMT);
txwi[3] |= cpu_to_le32(MT_TXD3_REM_TX_COUNT);
if (!is_mt7921(dev))
txwi[7] |= cpu_to_le32(FIELD_PREP(MT_TXD7_SPE_IDX,
0x18));
}

if (info->flags & IEEE80211_TX_CTL_INJECTED) {
u16 seqno = le16_to_cpu(hdr->seq_ctrl);

if (ieee80211_is_back_req(hdr->frame_control)) {
struct ieee80211_bar *bar;

bar = (struct ieee80211_bar *)skb->data;
seqno = le16_to_cpu(bar->start_seq_num);
}

val = MT_TXD3_SN_VALID |
FIELD_PREP(MT_TXD3_SEQ, IEEE80211_SEQ_TO_SN(seqno));
txwi[3] |= cpu_to_le32(val);
txwi[7] &= ~cpu_to_le32(MT_TXD7_HW_AMSDU);
}

if (mt76_is_mmio(dev)) {
val = FIELD_PREP(MT_TXD7_TYPE, fc_type) |
FIELD_PREP(MT_TXD7_SUB_TYPE, fc_stype);
txwi[7] |= cpu_to_le32(val);
} else {
val = FIELD_PREP(MT_TXD8_L_TYPE, fc_type) |
FIELD_PREP(MT_TXD8_L_SUB_TYPE, fc_stype);
txwi[8] |= cpu_to_le32(val);
}
}

void mt76_connac2_mac_write_txwi(struct mt76_dev *dev, __le32 *txwi,
struct sk_buff *skb, struct mt76_wcid *wcid,
struct ieee80211_key_conf *key, int pid,
u32 changed)
{
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
bool ext_phy = info->hw_queue & MT_TX_HW_QUEUE_EXT_PHY;
struct ieee80211_vif *vif = info->control.vif;
struct mt76_phy *mphy = &dev->phy;
u8 p_fmt, q_idx, omac_idx = 0, wmm_idx = 0, band_idx = 0;
u32 val, sz_txd = mt76_is_mmio(dev) ? MT_TXD_SIZE : MT_SDIO_TXD_SIZE;
bool is_8023 = info->flags & IEEE80211_TX_CTL_HW_80211_ENCAP;
bool beacon = !!(changed & (BSS_CHANGED_BEACON |
BSS_CHANGED_BEACON_ENABLED));
bool inband_disc = !!(changed & (BSS_CHANGED_UNSOL_BCAST_PROBE_RESP |
BSS_CHANGED_FILS_DISCOVERY));

if (vif) {
struct mt76_vif *mvif = (struct mt76_vif *)vif->drv_priv;

omac_idx = mvif->omac_idx;
wmm_idx = mvif->wmm_idx;
band_idx = mvif->band_idx;
}

if (ext_phy && dev->phy2)
mphy = dev->phy2;

if (inband_disc) {
p_fmt = MT_TX_TYPE_FW;
q_idx = MT_LMAC_ALTX0;
} else if (beacon) {
p_fmt = MT_TX_TYPE_FW;
q_idx = MT_LMAC_BCN0;
} else if (skb_get_queue_mapping(skb) >= MT_TXQ_PSD) {
p_fmt = mt76_is_mmio(dev) ? MT_TX_TYPE_CT : MT_TX_TYPE_SF;
q_idx = MT_LMAC_ALTX0;
} else {
p_fmt = mt76_is_mmio(dev) ? MT_TX_TYPE_CT : MT_TX_TYPE_SF;
q_idx = wmm_idx * MT76_CONNAC_MAX_WMM_SETS +
mt76_connac_lmac_mapping(skb_get_queue_mapping(skb));
}

val = FIELD_PREP(MT_TXD0_TX_BYTES, skb->len + sz_txd) |
FIELD_PREP(MT_TXD0_PKT_FMT, p_fmt) |
FIELD_PREP(MT_TXD0_Q_IDX, q_idx);
txwi[0] = cpu_to_le32(val);

val = MT_TXD1_LONG_FORMAT |
FIELD_PREP(MT_TXD1_WLAN_IDX, wcid->idx) |
FIELD_PREP(MT_TXD1_OWN_MAC, omac_idx);
if (!is_mt7921(dev))
val |= MT_TXD1_VTA;
if (ext_phy || band_idx)
val |= MT_TXD1_TGID;

txwi[1] = cpu_to_le32(val);
txwi[2] = 0;

val = FIELD_PREP(MT_TXD3_REM_TX_COUNT, 15);
if (!is_mt7921(dev))
val |= MT_TXD3_SW_POWER_MGMT;
if (key)
val |= MT_TXD3_PROTECT_FRAME;
if (info->flags & IEEE80211_TX_CTL_NO_ACK)
val |= MT_TXD3_NO_ACK;

txwi[3] = cpu_to_le32(val);
txwi[4] = 0;

val = FIELD_PREP(MT_TXD5_PID, pid);
if (pid >= MT_PACKET_ID_FIRST)
val |= MT_TXD5_TX_STATUS_HOST;

txwi[5] = cpu_to_le32(val);
txwi[6] = 0;
txwi[7] = wcid->amsdu ? cpu_to_le32(MT_TXD7_HW_AMSDU) : 0;

if (is_8023)
mt76_connac2_mac_write_txwi_8023(txwi, skb, wcid);
else
mt76_connac2_mac_write_txwi_80211(dev, txwi, skb, key);

if (txwi[2] & cpu_to_le32(MT_TXD2_FIX_RATE)) {
/* Fixed rata is available just for 802.11 txd */
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
bool multicast = is_multicast_ether_addr(hdr->addr1);
u16 rate = mt76_connac2_mac_tx_rate_val(mphy, vif, beacon,
multicast);
u32 val = MT_TXD6_FIXED_BW;

/* hardware won't add HTC for mgmt/ctrl frame */
txwi[2] |= cpu_to_le32(MT_TXD2_HTC_VLD);

val |= FIELD_PREP(MT_TXD6_TX_RATE, rate);
txwi[6] |= cpu_to_le32(val);
txwi[3] |= cpu_to_le32(MT_TXD3_BA_DISABLE);
}
}
EXPORT_SYMBOL_GPL(mt76_connac2_mac_write_txwi);
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