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linuxdebug/drivers/net/wireless/mediatek/mt76/mt7915/mac.c

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null pointer error
2024-07-16 15:50:57 +02:00
// SPDX-License-Identifier: ISC
/* Copyright (C) 2020 MediaTek Inc. */
#include <linux/etherdevice.h>
#include <linux/timekeeping.h>
#include "mt7915.h"
#include "../dma.h"
#include "mac.h"
#include "mcu.h"
#define to_rssi(field, rxv) ((FIELD_GET(field, rxv) - 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;
}
void mt7915_sta_ps(struct mt76_dev *mdev, struct ieee80211_sta *sta, bool ps)
{
}
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;
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;
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 q = mt76_connac_lmac_mapping(i);
u32 tx_cur = tx_time[q];
u32 rx_cur = rx_time[q];
u8 tid = ac_to_tid[i];
if (!tx_cur && !rx_cur)
continue;
ieee80211_sta_register_airtime(sta, tid, tx_cur,
rx_cur);
}
/*
* We don't support reading GI info from txs packets.
* For accurate tx status reporting and AQL improvement,
* we need to make sure that flags match so polling GI
* from per-sta counters directly.
*/
rate = &msta->wcid.rate;
addr = mt7915_mac_wtbl_lmac_addr(dev, idx, 7);
val = mt76_rr(dev, addr);
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;
}
if (rate->flags & RATE_INFO_FLAGS_HE_MCS) {
u8 offs = 24 + 2 * bw;
rate->he_gi = (val & (0x3 << offs)) >> offs;
} else if (rate->flags &
(RATE_INFO_FLAGS_VHT_MCS | RATE_INFO_FLAGS_MCS)) {
if (val & BIT(12 + bw))
rate->flags |= RATE_INFO_FLAGS_SHORT_GI;
else
rate->flags &= ~RATE_INFO_FLAGS_SHORT_GI;
}
}
rcu_read_unlock();
}
static int
mt7915_mac_fill_rx(struct mt7915_dev *dev, struct sk_buff *skb)
{
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->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;
}
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->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);
if (WARN_ON_ONCE((void *)&tx_info[total >> v3] > end))
return;
for (cur_info = tx_info; count < total; cur_info++) {
u32 msdu, info = le32_to_cpu(*cur_info);
u8 i;
/*
* 1'b1: new wcid pair.
* 1'b0: msdu_id with the same 'wcid pair' as above.
*/
if (info & MT_TX_FREE_PAIR) {
struct mt7915_sta *msta;
struct mt76_wcid *wcid;
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);
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);
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;
mt7915_txwi_free(dev, txwi, sta, &free_list);
}
}
mt7915_mac_tx_free_done(dev, &free_list, wake);
}
static void
mt7915_mac_tx_free_v0(struct mt7915_dev *dev, void *data, int len)
{
struct mt76_connac_tx_free *free = data;
__le16 *info = (__le16 *)(data + sizeof(*free));
struct mt76_dev *mdev = &dev->mt76;
void *end = data + len;
LIST_HEAD(free_list);
bool wake = false;
u8 i, count;
mt7915_mac_tx_free_prepare(dev);
count = FIELD_GET(MT_TX_FREE_MSDU_CNT_V0, le16_to_cpu(free->ctrl));
if (WARN_ON_ONCE((void *)&info[count] > end))
return;
for (i = 0; i < count; i++) {
struct mt76_txwi_cache *txwi;
u16 msdu = le16_to_cpu(info[i]);
txwi = mt76_token_release(mdev, msdu, &wake);
if (!txwi)
continue;
mt7915_txwi_free(dev, txwi, NULL, &free_list);
}
mt7915_mac_tx_free_done(dev, &free_list, wake);
}
static void mt7915_mac_add_txs(struct mt7915_dev *dev, void *data)
{
struct mt7915_sta *msta = NULL;
struct mt76_wcid *wcid;
__le32 *txs_data = data;
u16 wcidx;
u8 pid;
wcidx = le32_get_bits(txs_data[2], MT_TXS2_WCID);
pid = le32_get_bits(txs_data[3], MT_TXS3_PID);
if (pid < MT_PACKET_ID_WED)
return;
if (wcidx >= mt7915_wtbl_size(dev))
return;
rcu_read_lock();
wcid = rcu_dereference(dev->mt76.wcid[wcidx]);
if (!wcid)
goto out;
msta = container_of(wcid, struct mt7915_sta, wcid);
if (pid == MT_PACKET_ID_WED)
mt76_connac2_mac_fill_txs(&dev->mt76, wcid, txs_data);
else
mt76_connac2_mac_add_txs_skb(&dev->mt76, wcid, pid, txs_data);
if (!wcid->sta)
goto out;
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);
out:
rcu_read_unlock();
}
bool mt7915_rx_check(struct mt76_dev *mdev, void *data, int len)
{
struct mt7915_dev *dev = container_of(mdev, struct mt7915_dev, mt76);
__le32 *rxd = (__le32 *)data;
__le32 *end = (__le32 *)&rxd[len / 4];
enum rx_pkt_type type;
type = le32_get_bits(rxd[0], MT_RXD0_PKT_TYPE);
switch (type) {
case PKT_TYPE_TXRX_NOTIFY:
mt7915_mac_tx_free(dev, data, len);
return false;
case PKT_TYPE_TXRX_NOTIFY_V0:
mt7915_mac_tx_free_v0(dev, data, len);
return false;
case PKT_TYPE_TXS:
for (rxd += 2; rxd + 8 <= end; rxd += 8)
mt7915_mac_add_txs(dev, rxd);
return false;
case PKT_TYPE_RX_FW_MONITOR:
mt7915_debugfs_rx_fw_monitor(dev, data, len);
return false;
default:
return true;
}
}
void mt7915_queue_rx_skb(struct mt76_dev *mdev, enum mt76_rxq_id q,
struct sk_buff *skb)
{
struct mt7915_dev *dev = container_of(mdev, struct mt7915_dev, mt76);
__le32 *rxd = (__le32 *)skb->data;
__le32 *end = (__le32 *)&skb->data[skb->len];
enum rx_pkt_type type;
type = le32_get_bits(rxd[0], MT_RXD0_PKT_TYPE);
switch (type) {
case PKT_TYPE_TXRX_NOTIFY:
mt7915_mac_tx_free(dev, skb->data, skb->len);
napi_consume_skb(skb, 1);
break;
case PKT_TYPE_TXRX_NOTIFY_V0:
mt7915_mac_tx_free_v0(dev, skb->data, skb->len);
napi_consume_skb(skb, 1);
break;
case PKT_TYPE_RX_EVENT:
mt7915_mcu_rx_event(dev, skb);
break;
case PKT_TYPE_TXRXV:
mt7915_mac_fill_rx_vector(dev, skb);
break;
case PKT_TYPE_TXS:
for (rxd += 2; rxd + 8 <= end; rxd += 8)
mt7915_mac_add_txs(dev, rxd);
dev_kfree_skb(skb);
break;
case PKT_TYPE_RX_FW_MONITOR:
mt7915_debugfs_rx_fw_monitor(dev, skb->data, skb->len);
dev_kfree_skb(skb);
break;
case PKT_TYPE_NORMAL:
if (!mt7915_mac_fill_rx(dev, skb)) {
mt76_rx(&dev->mt76, q, skb);
return;
}
fallthrough;
default:
dev_kfree_skb(skb);
break;
}
}
void mt7915_mac_cca_stats_reset(struct mt7915_phy *phy)
{
struct mt7915_dev *dev = phy->dev;
u32 reg = MT_WF_PHY_RX_CTRL1(phy->band_idx);
mt76_clear(dev, reg, MT_WF_PHY_RX_CTRL1_STSCNT_EN);
mt76_set(dev, reg, BIT(11) | BIT(9));
}
void mt7915_mac_reset_counters(struct mt7915_phy *phy)
{
struct mt7915_dev *dev = phy->dev;
int i;
for (i = 0; i < 4; i++) {
mt76_rr(dev, MT_TX_AGG_CNT(phy->band_idx, i));
mt76_rr(dev, MT_TX_AGG_CNT2(phy->band_idx, i));
}
i = 0;
phy->mt76->survey_time = ktime_get_boottime();
if (phy->band_idx)
i = ARRAY_SIZE(dev->mt76.aggr_stats) / 2;
memset(&dev->mt76.aggr_stats[i], 0, sizeof(dev->mt76.aggr_stats) / 2);
/* reset airtime counters */
mt76_set(dev, MT_WF_RMAC_MIB_AIRTIME0(phy->band_idx),
MT_WF_RMAC_MIB_RXTIME_CLR);
mt7915_mcu_get_chan_mib_info(phy, true);
}
void mt7915_mac_set_timing(struct mt7915_phy *phy)
{
s16 coverage_class = phy->coverage_class;
struct mt7915_dev *dev = phy->dev;
struct mt7915_phy *ext_phy = mt7915_ext_phy(dev);
u32 val, reg_offset;
u32 cck = FIELD_PREP(MT_TIMEOUT_VAL_PLCP, 231) |
FIELD_PREP(MT_TIMEOUT_VAL_CCA, 48);
u32 ofdm = FIELD_PREP(MT_TIMEOUT_VAL_PLCP, 60) |
FIELD_PREP(MT_TIMEOUT_VAL_CCA, 28);
int eifs_ofdm = 360, sifs = 10, offset;
bool a_band = !(phy->mt76->chandef.chan->band == NL80211_BAND_2GHZ);
if (!test_bit(MT76_STATE_RUNNING, &phy->mt76->state))
return;
if (ext_phy)
coverage_class = max_t(s16, dev->phy.coverage_class,
ext_phy->coverage_class);
mt76_set(dev, MT_ARB_SCR(phy->band_idx),
MT_ARB_SCR_TX_DISABLE | MT_ARB_SCR_RX_DISABLE);
udelay(1);
offset = 3 * coverage_class;
reg_offset = FIELD_PREP(MT_TIMEOUT_VAL_PLCP, offset) |
FIELD_PREP(MT_TIMEOUT_VAL_CCA, offset);
if (!is_mt7915(&dev->mt76)) {
if (!a_band) {
mt76_wr(dev, MT_TMAC_ICR1(phy->band_idx),
FIELD_PREP(MT_IFS_EIFS_CCK, 314));
eifs_ofdm = 78;
} else {
eifs_ofdm = 84;
}
} else if (a_band) {
sifs = 16;
}
mt76_wr(dev, MT_TMAC_CDTR(phy->band_idx), cck + reg_offset);
mt76_wr(dev, MT_TMAC_ODTR(phy->band_idx), ofdm + reg_offset);
mt76_wr(dev, MT_TMAC_ICR0(phy->band_idx),
FIELD_PREP(MT_IFS_EIFS_OFDM, eifs_ofdm) |
FIELD_PREP(MT_IFS_RIFS, 2) |
FIELD_PREP(MT_IFS_SIFS, sifs) |
FIELD_PREP(MT_IFS_SLOT, phy->slottime));
if (phy->slottime < 20 || a_band)
val = MT7915_CFEND_RATE_DEFAULT;
else
val = MT7915_CFEND_RATE_11B;
mt76_rmw_field(dev, MT_AGG_ACR0(phy->band_idx), MT_AGG_ACR_CFEND_RATE, val);
mt76_clear(dev, MT_ARB_SCR(phy->band_idx),
MT_ARB_SCR_TX_DISABLE | MT_ARB_SCR_RX_DISABLE);
}
void mt7915_mac_enable_nf(struct mt7915_dev *dev, bool ext_phy)
{
u32 reg;
reg = is_mt7915(&dev->mt76) ? MT_WF_PHY_RXTD12(ext_phy) :
MT_WF_PHY_RXTD12_MT7916(ext_phy);
mt76_set(dev, reg,
MT_WF_PHY_RXTD12_IRPI_SW_CLR_ONLY |
MT_WF_PHY_RXTD12_IRPI_SW_CLR);
reg = is_mt7915(&dev->mt76) ? MT_WF_PHY_RX_CTRL1(ext_phy) :
MT_WF_PHY_RX_CTRL1_MT7916(ext_phy);
mt76_set(dev, reg, FIELD_PREP(MT_WF_PHY_RX_CTRL1_IPI_EN, 0x5));
}
static u8
mt7915_phy_get_nf(struct mt7915_phy *phy, int idx)
{
static const u8 nf_power[] = { 92, 89, 86, 83, 80, 75, 70, 65, 60, 55, 52 };
struct mt7915_dev *dev = phy->dev;
u32 val, sum = 0, n = 0;
int nss, i;
for (nss = 0; nss < hweight8(phy->mt76->chainmask); nss++) {
u32 reg = is_mt7915(&dev->mt76) ?
MT_WF_IRPI_NSS(0, nss + (idx << dev->dbdc_support)) :
MT_WF_IRPI_NSS_MT7916(idx, nss);
for (i = 0; i < ARRAY_SIZE(nf_power); i++, reg += 4) {
val = mt76_rr(dev, reg);
sum += val * nf_power[i];
n += val;
}
}
if (!n)
return 0;
return sum / n;
}
void mt7915_update_channel(struct mt76_phy *mphy)
{
struct mt7915_phy *phy = (struct mt7915_phy *)mphy->priv;
struct mt76_channel_state *state = mphy->chan_state;
int nf;
mt7915_mcu_get_chan_mib_info(phy, false);
nf = mt7915_phy_get_nf(phy, phy->band_idx);
if (!phy->noise)
phy->noise = nf << 4;
else if (nf)
phy->noise += nf - (phy->noise >> 4);
state->noise = -(phy->noise >> 4);
}
static bool
mt7915_wait_reset_state(struct mt7915_dev *dev, u32 state)
{
bool ret;
ret = wait_event_timeout(dev->reset_wait,
(READ_ONCE(dev->reset_state) & state),
MT7915_RESET_TIMEOUT);
WARN(!ret, "Timeout waiting for MCU reset state %x\n", state);
return ret;
}
static void
mt7915_update_vif_beacon(void *priv, u8 *mac, struct ieee80211_vif *vif)
{
struct ieee80211_hw *hw = priv;
switch (vif->type) {
case NL80211_IFTYPE_MESH_POINT:
case NL80211_IFTYPE_ADHOC:
case NL80211_IFTYPE_AP:
mt7915_mcu_add_beacon(hw, vif, vif->bss_conf.enable_beacon,
BSS_CHANGED_BEACON_ENABLED);
break;
default:
break;
}
}
static void
mt7915_update_beacons(struct mt7915_dev *dev)
{
struct mt76_phy *mphy_ext = dev->mt76.phys[MT_BAND1];
ieee80211_iterate_active_interfaces(dev->mt76.hw,
IEEE80211_IFACE_ITER_RESUME_ALL,
mt7915_update_vif_beacon, dev->mt76.hw);
if (!mphy_ext)
return;
ieee80211_iterate_active_interfaces(mphy_ext->hw,
IEEE80211_IFACE_ITER_RESUME_ALL,
mt7915_update_vif_beacon, mphy_ext->hw);
}
static void
mt7915_dma_reset(struct mt7915_dev *dev)
{
struct mt76_phy *mphy_ext = dev->mt76.phys[MT_BAND1];
u32 hif1_ofs = MT_WFDMA0_PCIE1(0) - MT_WFDMA0(0);
int i;
mt76_clear(dev, MT_WFDMA0_GLO_CFG,
MT_WFDMA0_GLO_CFG_TX_DMA_EN |
MT_WFDMA0_GLO_CFG_RX_DMA_EN);
if (is_mt7915(&dev->mt76))
mt76_clear(dev, MT_WFDMA1_GLO_CFG,
MT_WFDMA1_GLO_CFG_TX_DMA_EN |
MT_WFDMA1_GLO_CFG_RX_DMA_EN);
if (dev->hif2) {
mt76_clear(dev, MT_WFDMA0_GLO_CFG + hif1_ofs,
MT_WFDMA0_GLO_CFG_TX_DMA_EN |
MT_WFDMA0_GLO_CFG_RX_DMA_EN);
if (is_mt7915(&dev->mt76))
mt76_clear(dev, MT_WFDMA1_GLO_CFG + hif1_ofs,
MT_WFDMA1_GLO_CFG_TX_DMA_EN |
MT_WFDMA1_GLO_CFG_RX_DMA_EN);
}
usleep_range(1000, 2000);
for (i = 0; i < __MT_TXQ_MAX; i++) {
mt76_queue_tx_cleanup(dev, dev->mphy.q_tx[i], true);
if (mphy_ext)
mt76_queue_tx_cleanup(dev, mphy_ext->q_tx[i], true);
}
for (i = 0; i < __MT_MCUQ_MAX; i++)
mt76_queue_tx_cleanup(dev, dev->mt76.q_mcu[i], true);
mt76_for_each_q_rx(&dev->mt76, i)
mt76_queue_rx_reset(dev, i);
mt76_tx_status_check(&dev->mt76, true);
/* re-init prefetch settings after reset */
mt7915_dma_prefetch(dev);
mt76_set(dev, MT_WFDMA0_GLO_CFG,
MT_WFDMA0_GLO_CFG_TX_DMA_EN | MT_WFDMA0_GLO_CFG_RX_DMA_EN);
if (is_mt7915(&dev->mt76))
mt76_set(dev, MT_WFDMA1_GLO_CFG,
MT_WFDMA1_GLO_CFG_TX_DMA_EN |
MT_WFDMA1_GLO_CFG_RX_DMA_EN |
MT_WFDMA1_GLO_CFG_OMIT_TX_INFO |
MT_WFDMA1_GLO_CFG_OMIT_RX_INFO);
if (dev->hif2) {
mt76_set(dev, MT_WFDMA0_GLO_CFG + hif1_ofs,
MT_WFDMA0_GLO_CFG_TX_DMA_EN |
MT_WFDMA0_GLO_CFG_RX_DMA_EN);
if (is_mt7915(&dev->mt76))
mt76_set(dev, MT_WFDMA1_GLO_CFG + hif1_ofs,
MT_WFDMA1_GLO_CFG_TX_DMA_EN |
MT_WFDMA1_GLO_CFG_RX_DMA_EN |
MT_WFDMA1_GLO_CFG_OMIT_TX_INFO |
MT_WFDMA1_GLO_CFG_OMIT_RX_INFO);
}
}
void mt7915_tx_token_put(struct mt7915_dev *dev)
{
struct mt76_txwi_cache *txwi;
int id;
spin_lock_bh(&dev->mt76.token_lock);
idr_for_each_entry(&dev->mt76.token, txwi, id) {
mt7915_txwi_free(dev, txwi, NULL, NULL);
dev->mt76.token_count--;
}
spin_unlock_bh(&dev->mt76.token_lock);
idr_destroy(&dev->mt76.token);
}
/* system error recovery */
void mt7915_mac_reset_work(struct work_struct *work)
{
struct mt7915_phy *phy2;
struct mt76_phy *ext_phy;
struct mt7915_dev *dev;
int i;
dev = container_of(work, struct mt7915_dev, reset_work);
ext_phy = dev->mt76.phys[MT_BAND1];
phy2 = ext_phy ? ext_phy->priv : NULL;
if (!(READ_ONCE(dev->reset_state) & MT_MCU_CMD_STOP_DMA))
return;
ieee80211_stop_queues(mt76_hw(dev));
if (ext_phy)
ieee80211_stop_queues(ext_phy->hw);
set_bit(MT76_RESET, &dev->mphy.state);
set_bit(MT76_MCU_RESET, &dev->mphy.state);
wake_up(&dev->mt76.mcu.wait);
cancel_delayed_work_sync(&dev->mphy.mac_work);
if (phy2) {
set_bit(MT76_RESET, &phy2->mt76->state);
cancel_delayed_work_sync(&phy2->mt76->mac_work);
}
mt76_worker_disable(&dev->mt76.tx_worker);
mt76_for_each_q_rx(&dev->mt76, i)
napi_disable(&dev->mt76.napi[i]);
napi_disable(&dev->mt76.tx_napi);
mutex_lock(&dev->mt76.mutex);
mt76_wr(dev, MT_MCU_INT_EVENT, MT_MCU_INT_EVENT_DMA_STOPPED);
if (mt7915_wait_reset_state(dev, MT_MCU_CMD_RESET_DONE)) {
mt7915_dma_reset(dev);
mt7915_tx_token_put(dev);
idr_init(&dev->mt76.token);
mt76_wr(dev, MT_MCU_INT_EVENT, MT_MCU_INT_EVENT_DMA_INIT);
mt7915_wait_reset_state(dev, MT_MCU_CMD_RECOVERY_DONE);
}
clear_bit(MT76_MCU_RESET, &dev->mphy.state);
clear_bit(MT76_RESET, &dev->mphy.state);
if (phy2)
clear_bit(MT76_RESET, &phy2->mt76->state);
local_bh_disable();
mt76_for_each_q_rx(&dev->mt76, i) {
napi_enable(&dev->mt76.napi[i]);
napi_schedule(&dev->mt76.napi[i]);
}
local_bh_enable();
tasklet_schedule(&dev->irq_tasklet);
mt76_wr(dev, MT_MCU_INT_EVENT, MT_MCU_INT_EVENT_RESET_DONE);
mt7915_wait_reset_state(dev, MT_MCU_CMD_NORMAL_STATE);
mt76_worker_enable(&dev->mt76.tx_worker);
local_bh_disable();
napi_enable(&dev->mt76.tx_napi);
napi_schedule(&dev->mt76.tx_napi);
local_bh_enable();
ieee80211_wake_queues(mt76_hw(dev));
if (ext_phy)
ieee80211_wake_queues(ext_phy->hw);
mutex_unlock(&dev->mt76.mutex);
mt7915_update_beacons(dev);
ieee80211_queue_delayed_work(mt76_hw(dev), &dev->mphy.mac_work,
MT7915_WATCHDOG_TIME);
if (phy2)
ieee80211_queue_delayed_work(ext_phy->hw,
&phy2->mt76->mac_work,
MT7915_WATCHDOG_TIME);
}
void mt7915_mac_update_stats(struct mt7915_phy *phy)
{
struct mt7915_dev *dev = phy->dev;
struct mib_stats *mib = &phy->mib;
int i, aggr0, aggr1, cnt;
u32 val;
cnt = mt76_rr(dev, MT_MIB_SDR3(phy->band_idx));
mib->fcs_err_cnt += is_mt7915(&dev->mt76) ?
FIELD_GET(MT_MIB_SDR3_FCS_ERR_MASK, cnt) :
FIELD_GET(MT_MIB_SDR3_FCS_ERR_MASK_MT7916, cnt);
cnt = mt76_rr(dev, MT_MIB_SDR4(phy->band_idx));
mib->rx_fifo_full_cnt += FIELD_GET(MT_MIB_SDR4_RX_FIFO_FULL_MASK, cnt);
cnt = mt76_rr(dev, MT_MIB_SDR5(phy->band_idx));
mib->rx_mpdu_cnt += cnt;
cnt = mt76_rr(dev, MT_MIB_SDR6(phy->band_idx));
mib->channel_idle_cnt += FIELD_GET(MT_MIB_SDR6_CHANNEL_IDL_CNT_MASK, cnt);
cnt = mt76_rr(dev, MT_MIB_SDR7(phy->band_idx));
mib->rx_vector_mismatch_cnt +=
FIELD_GET(MT_MIB_SDR7_RX_VECTOR_MISMATCH_CNT_MASK, cnt);
cnt = mt76_rr(dev, MT_MIB_SDR8(phy->band_idx));
mib->rx_delimiter_fail_cnt +=
FIELD_GET(MT_MIB_SDR8_RX_DELIMITER_FAIL_CNT_MASK, cnt);
cnt = mt76_rr(dev, MT_MIB_SDR10(phy->band_idx));
mib->rx_mrdy_cnt += is_mt7915(&dev->mt76) ?
FIELD_GET(MT_MIB_SDR10_MRDY_COUNT_MASK, cnt) :
FIELD_GET(MT_MIB_SDR10_MRDY_COUNT_MASK_MT7916, cnt);
cnt = mt76_rr(dev, MT_MIB_SDR11(phy->band_idx));
mib->rx_len_mismatch_cnt +=
FIELD_GET(MT_MIB_SDR11_RX_LEN_MISMATCH_CNT_MASK, cnt);
cnt = mt76_rr(dev, MT_MIB_SDR12(phy->band_idx));
mib->tx_ampdu_cnt += cnt;
cnt = mt76_rr(dev, MT_MIB_SDR13(phy->band_idx));
mib->tx_stop_q_empty_cnt +=
FIELD_GET(MT_MIB_SDR13_TX_STOP_Q_EMPTY_CNT_MASK, cnt);
cnt = mt76_rr(dev, MT_MIB_SDR14(phy->band_idx));
mib->tx_mpdu_attempts_cnt += is_mt7915(&dev->mt76) ?
FIELD_GET(MT_MIB_SDR14_TX_MPDU_ATTEMPTS_CNT_MASK, cnt) :
FIELD_GET(MT_MIB_SDR14_TX_MPDU_ATTEMPTS_CNT_MASK_MT7916, cnt);
cnt = mt76_rr(dev, MT_MIB_SDR15(phy->band_idx));
mib->tx_mpdu_success_cnt += is_mt7915(&dev->mt76) ?
FIELD_GET(MT_MIB_SDR15_TX_MPDU_SUCCESS_CNT_MASK, cnt) :
FIELD_GET(MT_MIB_SDR15_TX_MPDU_SUCCESS_CNT_MASK_MT7916, cnt);
cnt = mt76_rr(dev, MT_MIB_SDR16(phy->band_idx));
mib->primary_cca_busy_time +=
FIELD_GET(MT_MIB_SDR16_PRIMARY_CCA_BUSY_TIME_MASK, cnt);
cnt = mt76_rr(dev, MT_MIB_SDR17(phy->band_idx));
mib->secondary_cca_busy_time +=
FIELD_GET(MT_MIB_SDR17_SECONDARY_CCA_BUSY_TIME_MASK, cnt);
cnt = mt76_rr(dev, MT_MIB_SDR18(phy->band_idx));
mib->primary_energy_detect_time +=
FIELD_GET(MT_MIB_SDR18_PRIMARY_ENERGY_DETECT_TIME_MASK, cnt);
cnt = mt76_rr(dev, MT_MIB_SDR19(phy->band_idx));
mib->cck_mdrdy_time += FIELD_GET(MT_MIB_SDR19_CCK_MDRDY_TIME_MASK, cnt);
cnt = mt76_rr(dev, MT_MIB_SDR20(phy->band_idx));
mib->ofdm_mdrdy_time +=
FIELD_GET(MT_MIB_SDR20_OFDM_VHT_MDRDY_TIME_MASK, cnt);
cnt = mt76_rr(dev, MT_MIB_SDR21(phy->band_idx));
mib->green_mdrdy_time +=
FIELD_GET(MT_MIB_SDR21_GREEN_MDRDY_TIME_MASK, cnt);
cnt = mt76_rr(dev, MT_MIB_SDR22(phy->band_idx));
mib->rx_ampdu_cnt += cnt;
cnt = mt76_rr(dev, MT_MIB_SDR23(phy->band_idx));
mib->rx_ampdu_bytes_cnt += cnt;
cnt = mt76_rr(dev, MT_MIB_SDR24(phy->band_idx));
mib->rx_ampdu_valid_subframe_cnt += is_mt7915(&dev->mt76) ?
FIELD_GET(MT_MIB_SDR24_RX_AMPDU_SF_CNT_MASK, cnt) :
FIELD_GET(MT_MIB_SDR24_RX_AMPDU_SF_CNT_MASK_MT7916, cnt);
cnt = mt76_rr(dev, MT_MIB_SDR25(phy->band_idx));
mib->rx_ampdu_valid_subframe_bytes_cnt += cnt;
cnt = mt76_rr(dev, MT_MIB_SDR27(phy->band_idx));
mib->tx_rwp_fail_cnt +=
FIELD_GET(MT_MIB_SDR27_TX_RWP_FAIL_CNT_MASK, cnt);
cnt = mt76_rr(dev, MT_MIB_SDR28(phy->band_idx));
mib->tx_rwp_need_cnt +=
FIELD_GET(MT_MIB_SDR28_TX_RWP_NEED_CNT_MASK, cnt);
cnt = mt76_rr(dev, MT_MIB_SDR29(phy->band_idx));
mib->rx_pfdrop_cnt += is_mt7915(&dev->mt76) ?
FIELD_GET(MT_MIB_SDR29_RX_PFDROP_CNT_MASK, cnt) :
FIELD_GET(MT_MIB_SDR29_RX_PFDROP_CNT_MASK_MT7916, cnt);
cnt = mt76_rr(dev, MT_MIB_SDRVEC(phy->band_idx));
mib->rx_vec_queue_overflow_drop_cnt += is_mt7915(&dev->mt76) ?
FIELD_GET(MT_MIB_SDR30_RX_VEC_QUEUE_OVERFLOW_DROP_CNT_MASK, cnt) :
FIELD_GET(MT_MIB_SDR30_RX_VEC_QUEUE_OVERFLOW_DROP_CNT_MASK_MT7916, cnt);
cnt = mt76_rr(dev, MT_MIB_SDR31(phy->band_idx));
mib->rx_ba_cnt += cnt;
cnt = mt76_rr(dev, MT_MIB_SDRMUBF(phy->band_idx));
mib->tx_bf_cnt += FIELD_GET(MT_MIB_MU_BF_TX_CNT, cnt);
cnt = mt76_rr(dev, MT_MIB_DR8(phy->band_idx));
mib->tx_mu_mpdu_cnt += cnt;
cnt = mt76_rr(dev, MT_MIB_DR9(phy->band_idx));
mib->tx_mu_acked_mpdu_cnt += cnt;
cnt = mt76_rr(dev, MT_MIB_DR11(phy->band_idx));
mib->tx_su_acked_mpdu_cnt += cnt;
cnt = mt76_rr(dev, MT_ETBF_PAR_RPT0(phy->band_idx));
mib->tx_bf_rx_fb_bw = FIELD_GET(MT_ETBF_PAR_RPT0_FB_BW, cnt);
mib->tx_bf_rx_fb_nc_cnt += FIELD_GET(MT_ETBF_PAR_RPT0_FB_NC, cnt);
mib->tx_bf_rx_fb_nr_cnt += FIELD_GET(MT_ETBF_PAR_RPT0_FB_NR, cnt);
for (i = 0; i < ARRAY_SIZE(mib->tx_amsdu); i++) {
cnt = mt76_rr(dev, MT_PLE_AMSDU_PACK_MSDU_CNT(i));
mib->tx_amsdu[i] += cnt;
mib->tx_amsdu_cnt += cnt;
}
aggr0 = phy->band_idx ? ARRAY_SIZE(dev->mt76.aggr_stats) / 2 : 0;
if (is_mt7915(&dev->mt76)) {
for (i = 0, aggr1 = aggr0 + 8; i < 4; i++) {
val = mt76_rr(dev, MT_MIB_MB_SDR1(phy->band_idx, (i << 4)));
mib->ba_miss_cnt +=
FIELD_GET(MT_MIB_BA_MISS_COUNT_MASK, val);
mib->ack_fail_cnt +=
FIELD_GET(MT_MIB_ACK_FAIL_COUNT_MASK, val);
val = mt76_rr(dev, MT_MIB_MB_SDR0(phy->band_idx, (i << 4)));
mib->rts_cnt += FIELD_GET(MT_MIB_RTS_COUNT_MASK, val);
mib->rts_retries_cnt +=
FIELD_GET(MT_MIB_RTS_RETRIES_COUNT_MASK, val);
val = mt76_rr(dev, MT_TX_AGG_CNT(phy->band_idx, i));
dev->mt76.aggr_stats[aggr0++] += val & 0xffff;
dev->mt76.aggr_stats[aggr0++] += val >> 16;
val = mt76_rr(dev, MT_TX_AGG_CNT2(phy->band_idx, i));
dev->mt76.aggr_stats[aggr1++] += val & 0xffff;
dev->mt76.aggr_stats[aggr1++] += val >> 16;
}
cnt = mt76_rr(dev, MT_MIB_SDR32(phy->band_idx));
mib->tx_pkt_ebf_cnt += FIELD_GET(MT_MIB_SDR32_TX_PKT_EBF_CNT, cnt);
cnt = mt76_rr(dev, MT_MIB_SDR33(phy->band_idx));
mib->tx_pkt_ibf_cnt += FIELD_GET(MT_MIB_SDR33_TX_PKT_IBF_CNT, cnt);
cnt = mt76_rr(dev, MT_ETBF_TX_APP_CNT(phy->band_idx));
mib->tx_bf_ibf_ppdu_cnt += FIELD_GET(MT_ETBF_TX_IBF_CNT, cnt);
mib->tx_bf_ebf_ppdu_cnt += FIELD_GET(MT_ETBF_TX_EBF_CNT, cnt);
cnt = mt76_rr(dev, MT_ETBF_TX_NDP_BFRP(phy->band_idx));
mib->tx_bf_fb_cpl_cnt += FIELD_GET(MT_ETBF_TX_FB_CPL, cnt);
mib->tx_bf_fb_trig_cnt += FIELD_GET(MT_ETBF_TX_FB_TRI, cnt);
cnt = mt76_rr(dev, MT_ETBF_RX_FB_CNT(phy->band_idx));
mib->tx_bf_rx_fb_all_cnt += FIELD_GET(MT_ETBF_RX_FB_ALL, cnt);
mib->tx_bf_rx_fb_he_cnt += FIELD_GET(MT_ETBF_RX_FB_HE, cnt);
mib->tx_bf_rx_fb_vht_cnt += FIELD_GET(MT_ETBF_RX_FB_VHT, cnt);
mib->tx_bf_rx_fb_ht_cnt += FIELD_GET(MT_ETBF_RX_FB_HT, cnt);
} else {
for (i = 0; i < 2; i++) {
/* rts count */
val = mt76_rr(dev, MT_MIB_MB_SDR0(phy->band_idx, (i << 2)));
mib->rts_cnt += FIELD_GET(GENMASK(15, 0), val);
mib->rts_cnt += FIELD_GET(GENMASK(31, 16), val);
/* rts retry count */
val = mt76_rr(dev, MT_MIB_MB_SDR1(phy->band_idx, (i << 2)));
mib->rts_retries_cnt += FIELD_GET(GENMASK(15, 0), val);
mib->rts_retries_cnt += FIELD_GET(GENMASK(31, 16), val);
/* ba miss count */
val = mt76_rr(dev, MT_MIB_MB_SDR2(phy->band_idx, (i << 2)));
mib->ba_miss_cnt += FIELD_GET(GENMASK(15, 0), val);
mib->ba_miss_cnt += FIELD_GET(GENMASK(31, 16), val);
/* ack fail count */
val = mt76_rr(dev, MT_MIB_MB_BFTF(phy->band_idx, (i << 2)));
mib->ack_fail_cnt += FIELD_GET(GENMASK(15, 0), val);
mib->ack_fail_cnt += FIELD_GET(GENMASK(31, 16), val);
}
for (i = 0; i < 8; i++) {
val = mt76_rr(dev, MT_TX_AGG_CNT(phy->band_idx, i));
dev->mt76.aggr_stats[aggr0++] += FIELD_GET(GENMASK(15, 0), val);
dev->mt76.aggr_stats[aggr0++] += FIELD_GET(GENMASK(31, 16), val);
}
cnt = mt76_rr(dev, MT_MIB_SDR32(phy->band_idx));
mib->tx_pkt_ibf_cnt += FIELD_GET(MT_MIB_SDR32_TX_PKT_IBF_CNT, cnt);
mib->tx_bf_ibf_ppdu_cnt += FIELD_GET(MT_MIB_SDR32_TX_PKT_IBF_CNT, cnt);
mib->tx_pkt_ebf_cnt += FIELD_GET(MT_MIB_SDR32_TX_PKT_EBF_CNT, cnt);
mib->tx_bf_ebf_ppdu_cnt += FIELD_GET(MT_MIB_SDR32_TX_PKT_EBF_CNT, cnt);
cnt = mt76_rr(dev, MT_MIB_BFCR7(phy->band_idx));
mib->tx_bf_fb_cpl_cnt += FIELD_GET(MT_MIB_BFCR7_BFEE_TX_FB_CPL, cnt);
cnt = mt76_rr(dev, MT_MIB_BFCR2(phy->band_idx));
mib->tx_bf_fb_trig_cnt += FIELD_GET(MT_MIB_BFCR2_BFEE_TX_FB_TRIG, cnt);
cnt = mt76_rr(dev, MT_MIB_BFCR0(phy->band_idx));
mib->tx_bf_rx_fb_vht_cnt += FIELD_GET(MT_MIB_BFCR0_RX_FB_VHT, cnt);
mib->tx_bf_rx_fb_all_cnt += FIELD_GET(MT_MIB_BFCR0_RX_FB_VHT, cnt);
mib->tx_bf_rx_fb_ht_cnt += FIELD_GET(MT_MIB_BFCR0_RX_FB_HT, cnt);
mib->tx_bf_rx_fb_all_cnt += FIELD_GET(MT_MIB_BFCR0_RX_FB_HT, cnt);
cnt = mt76_rr(dev, MT_MIB_BFCR1(phy->band_idx));
mib->tx_bf_rx_fb_he_cnt += FIELD_GET(MT_MIB_BFCR1_RX_FB_HE, cnt);
mib->tx_bf_rx_fb_all_cnt += FIELD_GET(MT_MIB_BFCR1_RX_FB_HE, cnt);
}
}
static void mt7915_mac_severe_check(struct mt7915_phy *phy)
{
struct mt7915_dev *dev = phy->dev;
bool ext_phy = phy != &dev->phy;
u32 trb;
if (!phy->omac_mask)
return;
/* In rare cases, TRB pointers might be out of sync leads to RMAC
* stopping Rx, so check status periodically to see if TRB hardware
* requires minimal recovery.
*/
trb = mt76_rr(dev, MT_TRB_RXPSR0(phy->band_idx));
if ((FIELD_GET(MT_TRB_RXPSR0_RX_RMAC_PTR, trb) !=
FIELD_GET(MT_TRB_RXPSR0_RX_WTBL_PTR, trb)) &&
(FIELD_GET(MT_TRB_RXPSR0_RX_RMAC_PTR, phy->trb_ts) !=
FIELD_GET(MT_TRB_RXPSR0_RX_WTBL_PTR, phy->trb_ts)) &&
trb == phy->trb_ts)
mt7915_mcu_set_ser(dev, SER_RECOVER, SER_SET_RECOVER_L3_RX_ABORT,
ext_phy);
phy->trb_ts = trb;
}
void mt7915_mac_sta_rc_work(struct work_struct *work)
{
struct mt7915_dev *dev = container_of(work, struct mt7915_dev, rc_work);
struct ieee80211_sta *sta;
struct ieee80211_vif *vif;
struct mt7915_sta *msta;
u32 changed;
LIST_HEAD(list);
spin_lock_bh(&dev->sta_poll_lock);
list_splice_init(&dev->sta_rc_list, &list);
while (!list_empty(&list)) {
msta = list_first_entry(&list, struct mt7915_sta, rc_list);
list_del_init(&msta->rc_list);
changed = msta->changed;
msta->changed = 0;
spin_unlock_bh(&dev->sta_poll_lock);
sta = container_of((void *)msta, struct ieee80211_sta, drv_priv);
vif = container_of((void *)msta->vif, struct ieee80211_vif, drv_priv);
if (changed & (IEEE80211_RC_SUPP_RATES_CHANGED |
IEEE80211_RC_NSS_CHANGED |
IEEE80211_RC_BW_CHANGED))
mt7915_mcu_add_rate_ctrl(dev, vif, sta, true);
if (changed & IEEE80211_RC_SMPS_CHANGED)
mt7915_mcu_add_smps(dev, vif, sta);
spin_lock_bh(&dev->sta_poll_lock);
}
spin_unlock_bh(&dev->sta_poll_lock);
}
void mt7915_mac_work(struct work_struct *work)
{
struct mt7915_phy *phy;
struct mt76_phy *mphy;
mphy = (struct mt76_phy *)container_of(work, struct mt76_phy,
mac_work.work);
phy = mphy->priv;
mutex_lock(&mphy->dev->mutex);
mt76_update_survey(mphy);
if (++mphy->mac_work_count == 5) {
mphy->mac_work_count = 0;
mt7915_mac_update_stats(phy);
mt7915_mac_severe_check(phy);
}
mutex_unlock(&mphy->dev->mutex);
mt76_tx_status_check(mphy->dev, false);
ieee80211_queue_delayed_work(mphy->hw, &mphy->mac_work,
MT7915_WATCHDOG_TIME);
}
static void mt7915_dfs_stop_radar_detector(struct mt7915_phy *phy)
{
struct mt7915_dev *dev = phy->dev;
if (phy->rdd_state & BIT(0))
mt76_connac_mcu_rdd_cmd(&dev->mt76, RDD_STOP, 0,
MT_RX_SEL0, 0);
if (phy->rdd_state & BIT(1))
mt76_connac_mcu_rdd_cmd(&dev->mt76, RDD_STOP, 1,
MT_RX_SEL0, 0);
}
static int mt7915_dfs_start_rdd(struct mt7915_dev *dev, int chain)
{
int err, region;
switch (dev->mt76.region) {
case NL80211_DFS_ETSI:
region = 0;
break;
case NL80211_DFS_JP:
region = 2;
break;
case NL80211_DFS_FCC:
default:
region = 1;
break;
}
err = mt76_connac_mcu_rdd_cmd(&dev->mt76, RDD_START, chain,
MT_RX_SEL0, region);
if (err < 0)
return err;
return mt76_connac_mcu_rdd_cmd(&dev->mt76, RDD_DET_MODE, chain,
MT_RX_SEL0, 1);
}
static int mt7915_dfs_start_radar_detector(struct mt7915_phy *phy)
{
struct cfg80211_chan_def *chandef = &phy->mt76->chandef;
struct mt7915_dev *dev = phy->dev;
int err;
/* start CAC */
err = mt76_connac_mcu_rdd_cmd(&dev->mt76, RDD_CAC_START, phy->band_idx,
MT_RX_SEL0, 0);
if (err < 0)
return err;
err = mt7915_dfs_start_rdd(dev, phy->band_idx);
if (err < 0)
return err;
phy->rdd_state |= BIT(phy->band_idx);
if (!is_mt7915(&dev->mt76))
return 0;
if (chandef->width == NL80211_CHAN_WIDTH_160 ||
chandef->width == NL80211_CHAN_WIDTH_80P80) {
err = mt7915_dfs_start_rdd(dev, 1);
if (err < 0)
return err;
phy->rdd_state |= BIT(1);
}
return 0;
}
static int
mt7915_dfs_init_radar_specs(struct mt7915_phy *phy)
{
const struct mt7915_dfs_radar_spec *radar_specs;
struct mt7915_dev *dev = phy->dev;
int err, i;
switch (dev->mt76.region) {
case NL80211_DFS_FCC:
radar_specs = &fcc_radar_specs;
err = mt7915_mcu_set_fcc5_lpn(dev, 8);
if (err < 0)
return err;
break;
case NL80211_DFS_ETSI:
radar_specs = &etsi_radar_specs;
break;
case NL80211_DFS_JP:
radar_specs = &jp_radar_specs;
break;
default:
return -EINVAL;
}
for (i = 0; i < ARRAY_SIZE(radar_specs->radar_pattern); i++) {
err = mt7915_mcu_set_radar_th(dev, i,
&radar_specs->radar_pattern[i]);
if (err < 0)
return err;
}
return mt7915_mcu_set_pulse_th(dev, &radar_specs->pulse_th);
}
int mt7915_dfs_init_radar_detector(struct mt7915_phy *phy)
{
struct mt7915_dev *dev = phy->dev;
enum mt76_dfs_state dfs_state, prev_state;
int err;
prev_state = phy->mt76->dfs_state;
dfs_state = mt76_phy_dfs_state(phy->mt76);
if (prev_state == dfs_state)
return 0;
if (prev_state == MT_DFS_STATE_UNKNOWN)
mt7915_dfs_stop_radar_detector(phy);
if (dfs_state == MT_DFS_STATE_DISABLED)
goto stop;
if (prev_state <= MT_DFS_STATE_DISABLED) {
err = mt7915_dfs_init_radar_specs(phy);
if (err < 0)
return err;
err = mt7915_dfs_start_radar_detector(phy);
if (err < 0)
return err;
phy->mt76->dfs_state = MT_DFS_STATE_CAC;
}
if (dfs_state == MT_DFS_STATE_CAC)
return 0;
err = mt76_connac_mcu_rdd_cmd(&dev->mt76, RDD_CAC_END,
phy->band_idx, MT_RX_SEL0, 0);
if (err < 0) {
phy->mt76->dfs_state = MT_DFS_STATE_UNKNOWN;
return err;
}
phy->mt76->dfs_state = MT_DFS_STATE_ACTIVE;
return 0;
stop:
err = mt76_connac_mcu_rdd_cmd(&dev->mt76, RDD_NORMAL_START,
phy->band_idx, MT_RX_SEL0, 0);
if (err < 0)
return err;
mt7915_dfs_stop_radar_detector(phy);
phy->mt76->dfs_state = MT_DFS_STATE_DISABLED;
return 0;
}
static int
mt7915_mac_twt_duration_align(int duration)
{
return duration << 8;
}
static u64
mt7915_mac_twt_sched_list_add(struct mt7915_dev *dev,
struct mt7915_twt_flow *flow)
{
struct mt7915_twt_flow *iter, *iter_next;
u32 duration = flow->duration << 8;
u64 start_tsf;
iter = list_first_entry_or_null(&dev->twt_list,
struct mt7915_twt_flow, list);
if (!iter || !iter->sched || iter->start_tsf > duration) {
/* add flow as first entry in the list */
list_add(&flow->list, &dev->twt_list);
return 0;
}
list_for_each_entry_safe(iter, iter_next, &dev->twt_list, list) {
start_tsf = iter->start_tsf +
mt7915_mac_twt_duration_align(iter->duration);
if (list_is_last(&iter->list, &dev->twt_list))
break;
if (!iter_next->sched ||
iter_next->start_tsf > start_tsf + duration) {
list_add(&flow->list, &iter->list);
goto out;
}
}
/* add flow as last entry in the list */
list_add_tail(&flow->list, &dev->twt_list);
out:
return start_tsf;
}
static int mt7915_mac_check_twt_req(struct ieee80211_twt_setup *twt)
{
struct ieee80211_twt_params *twt_agrt;
u64 interval, duration;
u16 mantissa;
u8 exp;
/* only individual agreement supported */
if (twt->control & IEEE80211_TWT_CONTROL_NEG_TYPE_BROADCAST)
return -EOPNOTSUPP;
/* only 256us unit supported */
if (twt->control & IEEE80211_TWT_CONTROL_WAKE_DUR_UNIT)
return -EOPNOTSUPP;
twt_agrt = (struct ieee80211_twt_params *)twt->params;
/* explicit agreement not supported */
if (!(twt_agrt->req_type & cpu_to_le16(IEEE80211_TWT_REQTYPE_IMPLICIT)))
return -EOPNOTSUPP;
exp = FIELD_GET(IEEE80211_TWT_REQTYPE_WAKE_INT_EXP,
le16_to_cpu(twt_agrt->req_type));
mantissa = le16_to_cpu(twt_agrt->mantissa);
duration = twt_agrt->min_twt_dur << 8;
interval = (u64)mantissa << exp;
if (interval < duration)
return -EOPNOTSUPP;
return 0;
}
static bool
mt7915_mac_twt_param_equal(struct mt7915_sta *msta,
struct ieee80211_twt_params *twt_agrt)
{
u16 type = le16_to_cpu(twt_agrt->req_type);
u8 exp;
int i;
exp = FIELD_GET(IEEE80211_TWT_REQTYPE_WAKE_INT_EXP, type);
for (i = 0; i < MT7915_MAX_STA_TWT_AGRT; i++) {
struct mt7915_twt_flow *f;
if (!(msta->twt.flowid_mask & BIT(i)))
continue;
f = &msta->twt.flow[i];
if (f->duration == twt_agrt->min_twt_dur &&
f->mantissa == twt_agrt->mantissa &&
f->exp == exp &&
f->protection == !!(type & IEEE80211_TWT_REQTYPE_PROTECTION) &&
f->flowtype == !!(type & IEEE80211_TWT_REQTYPE_FLOWTYPE) &&
f->trigger == !!(type & IEEE80211_TWT_REQTYPE_TRIGGER))
return true;
}
return false;
}
void mt7915_mac_add_twt_setup(struct ieee80211_hw *hw,
struct ieee80211_sta *sta,
struct ieee80211_twt_setup *twt)
{
enum ieee80211_twt_setup_cmd setup_cmd = TWT_SETUP_CMD_REJECT;
struct mt7915_sta *msta = (struct mt7915_sta *)sta->drv_priv;
struct ieee80211_twt_params *twt_agrt = (void *)twt->params;
u16 req_type = le16_to_cpu(twt_agrt->req_type);
enum ieee80211_twt_setup_cmd sta_setup_cmd;
struct mt7915_dev *dev = mt7915_hw_dev(hw);
struct mt7915_twt_flow *flow;
int flowid, table_id;
u8 exp;
if (mt7915_mac_check_twt_req(twt))
goto out;
mutex_lock(&dev->mt76.mutex);
if (dev->twt.n_agrt == MT7915_MAX_TWT_AGRT)
goto unlock;
if (hweight8(msta->twt.flowid_mask) == ARRAY_SIZE(msta->twt.flow))
goto unlock;
if (twt_agrt->min_twt_dur < MT7915_MIN_TWT_DUR) {
setup_cmd = TWT_SETUP_CMD_DICTATE;
twt_agrt->min_twt_dur = MT7915_MIN_TWT_DUR;
goto unlock;
}
flowid = ffs(~msta->twt.flowid_mask) - 1;
twt_agrt->req_type &= ~cpu_to_le16(IEEE80211_TWT_REQTYPE_FLOWID);
twt_agrt->req_type |= le16_encode_bits(flowid,
IEEE80211_TWT_REQTYPE_FLOWID);
table_id = ffs(~dev->twt.table_mask) - 1;
exp = FIELD_GET(IEEE80211_TWT_REQTYPE_WAKE_INT_EXP, req_type);
sta_setup_cmd = FIELD_GET(IEEE80211_TWT_REQTYPE_SETUP_CMD, req_type);
if (mt7915_mac_twt_param_equal(msta, twt_agrt))
goto unlock;
flow = &msta->twt.flow[flowid];
memset(flow, 0, sizeof(*flow));
INIT_LIST_HEAD(&flow->list);
flow->wcid = msta->wcid.idx;
flow->table_id = table_id;
flow->id = flowid;
flow->duration = twt_agrt->min_twt_dur;
flow->mantissa = twt_agrt->mantissa;
flow->exp = exp;
flow->protection = !!(req_type & IEEE80211_TWT_REQTYPE_PROTECTION);
flow->flowtype = !!(req_type & IEEE80211_TWT_REQTYPE_FLOWTYPE);
flow->trigger = !!(req_type & IEEE80211_TWT_REQTYPE_TRIGGER);
if (sta_setup_cmd == TWT_SETUP_CMD_REQUEST ||
sta_setup_cmd == TWT_SETUP_CMD_SUGGEST) {
u64 interval = (u64)le16_to_cpu(twt_agrt->mantissa) << exp;
u64 flow_tsf, curr_tsf;
u32 rem;
flow->sched = true;
flow->start_tsf = mt7915_mac_twt_sched_list_add(dev, flow);
curr_tsf = __mt7915_get_tsf(hw, msta->vif);
div_u64_rem(curr_tsf - flow->start_tsf, interval, &rem);
flow_tsf = curr_tsf + interval - rem;
twt_agrt->twt = cpu_to_le64(flow_tsf);
} else {
list_add_tail(&flow->list, &dev->twt_list);
}
flow->tsf = le64_to_cpu(twt_agrt->twt);
if (mt7915_mcu_twt_agrt_update(dev, msta->vif, flow, MCU_TWT_AGRT_ADD))
goto unlock;
setup_cmd = TWT_SETUP_CMD_ACCEPT;
dev->twt.table_mask |= BIT(table_id);
msta->twt.flowid_mask |= BIT(flowid);
dev->twt.n_agrt++;
unlock:
mutex_unlock(&dev->mt76.mutex);
out:
twt_agrt->req_type &= ~cpu_to_le16(IEEE80211_TWT_REQTYPE_SETUP_CMD);
twt_agrt->req_type |=
le16_encode_bits(setup_cmd, IEEE80211_TWT_REQTYPE_SETUP_CMD);
twt->control = (twt->control & IEEE80211_TWT_CONTROL_WAKE_DUR_UNIT) |
(twt->control & IEEE80211_TWT_CONTROL_RX_DISABLED);
}
void mt7915_mac_twt_teardown_flow(struct mt7915_dev *dev,
struct mt7915_sta *msta,
u8 flowid)
{
struct mt7915_twt_flow *flow;
lockdep_assert_held(&dev->mt76.mutex);
if (flowid >= ARRAY_SIZE(msta->twt.flow))
return;
if (!(msta->twt.flowid_mask & BIT(flowid)))
return;
flow = &msta->twt.flow[flowid];
if (mt7915_mcu_twt_agrt_update(dev, msta->vif, flow,
MCU_TWT_AGRT_DELETE))
return;
list_del_init(&flow->list);
msta->twt.flowid_mask &= ~BIT(flowid);
dev->twt.table_mask &= ~BIT(flow->table_id);
dev->twt.n_agrt--;
}