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linux/linux-5.4.31/drivers/net/wireless/mediatek/mt76/mt7615/mac.c

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// SPDX-License-Identifier: ISC
/* Copyright (C) 2019 MediaTek Inc.
*
* Author: Ryder Lee <ryder.lee@mediatek.com>
* Roy Luo <royluo@google.com>
* Felix Fietkau <nbd@nbd.name>
* Lorenzo Bianconi <lorenzo@kernel.org>
*/
#include <linux/etherdevice.h>
#include <linux/timekeeping.h>
#include "mt7615.h"
#include "../dma.h"
#include "mac.h"
static inline s8 to_rssi(u32 field, u32 rxv)
{
return (FIELD_GET(field, rxv) - 220) / 2;
}
static struct mt76_wcid *mt7615_rx_get_wcid(struct mt7615_dev *dev,
u8 idx, bool unicast)
{
struct mt7615_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 mt7615_sta, wcid);
if (!sta->vif)
return NULL;
return &sta->vif->sta.wcid;
}
int mt7615_mac_fill_rx(struct mt7615_dev *dev, struct sk_buff *skb)
{
struct mt76_rx_status *status = (struct mt76_rx_status *)skb->cb;
struct ieee80211_supported_band *sband;
struct ieee80211_hdr *hdr;
__le32 *rxd = (__le32 *)skb->data;
u32 rxd0 = le32_to_cpu(rxd[0]);
u32 rxd1 = le32_to_cpu(rxd[1]);
u32 rxd2 = le32_to_cpu(rxd[2]);
bool unicast, remove_pad, insert_ccmp_hdr = false;
int i, idx;
if (!test_bit(MT76_STATE_RUNNING, &dev->mt76.state))
return -EINVAL;
memset(status, 0, sizeof(*status));
unicast = (rxd1 & MT_RXD1_NORMAL_ADDR_TYPE) == MT_RXD1_NORMAL_U2M;
idx = FIELD_GET(MT_RXD2_NORMAL_WLAN_IDX, rxd2);
status->wcid = mt7615_rx_get_wcid(dev, idx, unicast);
/* TODO: properly support DBDC */
status->freq = dev->mt76.chandef.chan->center_freq;
status->band = dev->mt76.chandef.chan->band;
if (status->band == NL80211_BAND_5GHZ)
sband = &dev->mt76.sband_5g.sband;
else
sband = &dev->mt76.sband_2g.sband;
if (rxd2 & MT_RXD2_NORMAL_FCS_ERR)
status->flag |= RX_FLAG_FAILED_FCS_CRC;
if (rxd2 & MT_RXD2_NORMAL_TKIP_MIC_ERR)
status->flag |= RX_FLAG_MMIC_ERROR;
if (FIELD_GET(MT_RXD2_NORMAL_SEC_MODE, rxd2) != 0 &&
!(rxd2 & (MT_RXD2_NORMAL_CLM | MT_RXD2_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 = rxd1 & MT_RXD1_NORMAL_HDR_OFFSET;
if (rxd2 & MT_RXD2_NORMAL_MAX_LEN_ERROR)
return -EINVAL;
if (!sband->channels)
return -EINVAL;
rxd += 4;
if (rxd0 & MT_RXD0_NORMAL_GROUP_4) {
rxd += 4;
if ((u8 *)rxd - skb->data >= skb->len)
return -EINVAL;
}
if (rxd0 & MT_RXD0_NORMAL_GROUP_1) {
u8 *data = (u8 *)rxd;
if (status->flag & RX_FLAG_DECRYPTED) {
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];
insert_ccmp_hdr = FIELD_GET(MT_RXD2_NORMAL_FRAG, rxd2);
}
rxd += 4;
if ((u8 *)rxd - skb->data >= skb->len)
return -EINVAL;
}
if (rxd0 & MT_RXD0_NORMAL_GROUP_2) {
rxd += 2;
if ((u8 *)rxd - skb->data >= skb->len)
return -EINVAL;
}
if (rxd0 & MT_RXD0_NORMAL_GROUP_3) {
u32 rxdg0 = le32_to_cpu(rxd[0]);
u32 rxdg1 = le32_to_cpu(rxd[1]);
u32 rxdg3 = le32_to_cpu(rxd[3]);
u8 stbc = FIELD_GET(MT_RXV1_HT_STBC, rxdg0);
bool cck = false;
i = FIELD_GET(MT_RXV1_TX_RATE, rxdg0);
switch (FIELD_GET(MT_RXV1_TX_MODE, rxdg0)) {
case MT_PHY_TYPE_CCK:
cck = true;
/* fall through */
case MT_PHY_TYPE_OFDM:
i = mt76_get_rate(&dev->mt76, sband, i, cck);
break;
case MT_PHY_TYPE_HT_GF:
case MT_PHY_TYPE_HT:
status->encoding = RX_ENC_HT;
if (i > 31)
return -EINVAL;
break;
case MT_PHY_TYPE_VHT:
status->nss = FIELD_GET(MT_RXV2_NSTS, rxdg1) + 1;
status->encoding = RX_ENC_VHT;
break;
default:
return -EINVAL;
}
status->rate_idx = i;
switch (FIELD_GET(MT_RXV1_FRAME_MODE, rxdg0)) {
case MT_PHY_BW_20:
break;
case MT_PHY_BW_40:
status->bw = RATE_INFO_BW_40;
break;
case MT_PHY_BW_80:
status->bw = RATE_INFO_BW_80;
break;
case MT_PHY_BW_160:
status->bw = RATE_INFO_BW_160;
break;
default:
return -EINVAL;
}
if (rxdg0 & MT_RXV1_HT_SHORT_GI)
status->enc_flags |= RX_ENC_FLAG_SHORT_GI;
if (rxdg0 & MT_RXV1_HT_AD_CODE)
status->enc_flags |= RX_ENC_FLAG_LDPC;
status->enc_flags |= RX_ENC_FLAG_STBC_MASK * stbc;
status->chains = dev->mt76.antenna_mask;
status->chain_signal[0] = to_rssi(MT_RXV4_RCPI0, rxdg3);
status->chain_signal[1] = to_rssi(MT_RXV4_RCPI1, rxdg3);
status->chain_signal[2] = to_rssi(MT_RXV4_RCPI2, rxdg3);
status->chain_signal[3] = to_rssi(MT_RXV4_RCPI3, rxdg3);
status->signal = status->chain_signal[0];
for (i = 1; i < hweight8(dev->mt76.antenna_mask); i++) {
if (!(status->chains & BIT(i)))
continue;
status->signal = max(status->signal,
status->chain_signal[i]);
}
rxd += 6;
if ((u8 *)rxd - skb->data >= skb->len)
return -EINVAL;
}
skb_pull(skb, (u8 *)rxd - skb->data + 2 * remove_pad);
if (insert_ccmp_hdr) {
u8 key_id = FIELD_GET(MT_RXD1_NORMAL_KEY_ID, rxd1);
mt76_insert_ccmp_hdr(skb, key_id);
}
hdr = (struct ieee80211_hdr *)skb->data;
if (!status->wcid || !ieee80211_is_data_qos(hdr->frame_control))
return 0;
status->aggr = unicast &&
!ieee80211_is_qos_nullfunc(hdr->frame_control);
status->tid = *ieee80211_get_qos_ctl(hdr) & IEEE80211_QOS_CTL_TID_MASK;
status->seqno = IEEE80211_SEQ_TO_SN(le16_to_cpu(hdr->seq_ctrl));
return 0;
}
void mt7615_sta_ps(struct mt76_dev *mdev, struct ieee80211_sta *sta, bool ps)
{
}
void mt7615_tx_complete_skb(struct mt76_dev *mdev, enum mt76_txq_id qid,
struct mt76_queue_entry *e)
{
if (!e->txwi) {
dev_kfree_skb_any(e->skb);
return;
}
/* error path */
if (e->skb == DMA_DUMMY_DATA) {
struct mt76_txwi_cache *t;
struct mt7615_dev *dev;
struct mt7615_txp *txp;
dev = container_of(mdev, struct mt7615_dev, mt76);
txp = mt7615_txwi_to_txp(mdev, e->txwi);
spin_lock_bh(&dev->token_lock);
t = idr_remove(&dev->token, le16_to_cpu(txp->token));
spin_unlock_bh(&dev->token_lock);
e->skb = t ? t->skb : NULL;
}
if (e->skb)
mt76_tx_complete_skb(mdev, e->skb);
}
static u16
mt7615_mac_tx_rate_val(struct mt7615_dev *dev,
const struct ieee80211_tx_rate *rate,
bool stbc, u8 *bw)
{
u8 phy, nss, rate_idx;
u16 rateval = 0;
*bw = 0;
if (rate->flags & IEEE80211_TX_RC_VHT_MCS) {
rate_idx = ieee80211_rate_get_vht_mcs(rate);
nss = ieee80211_rate_get_vht_nss(rate);
phy = MT_PHY_TYPE_VHT;
if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
*bw = 1;
else if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
*bw = 2;
else if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
*bw = 3;
} else if (rate->flags & IEEE80211_TX_RC_MCS) {
rate_idx = rate->idx;
nss = 1 + (rate->idx >> 3);
phy = MT_PHY_TYPE_HT;
if (rate->flags & IEEE80211_TX_RC_GREEN_FIELD)
phy = MT_PHY_TYPE_HT_GF;
if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
*bw = 1;
} else {
const struct ieee80211_rate *r;
int band = dev->mt76.chandef.chan->band;
u16 val;
nss = 1;
r = &mt76_hw(dev)->wiphy->bands[band]->bitrates[rate->idx];
if (rate->flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE)
val = r->hw_value_short;
else
val = r->hw_value;
phy = val >> 8;
rate_idx = val & 0xff;
}
if (stbc && nss == 1) {
nss++;
rateval |= MT_TX_RATE_STBC;
}
rateval |= (FIELD_PREP(MT_TX_RATE_IDX, rate_idx) |
FIELD_PREP(MT_TX_RATE_MODE, phy) |
FIELD_PREP(MT_TX_RATE_NSS, nss - 1));
return rateval;
}
int mt7615_mac_write_txwi(struct mt7615_dev *dev, __le32 *txwi,
struct sk_buff *skb, struct mt76_wcid *wcid,
struct ieee80211_sta *sta, int pid,
struct ieee80211_key_conf *key)
{
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
struct ieee80211_tx_rate *rate = &info->control.rates[0];
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
bool multicast = is_multicast_ether_addr(hdr->addr1);
struct ieee80211_vif *vif = info->control.vif;
int tx_count = 8;
u8 fc_type, fc_stype, p_fmt, q_idx, omac_idx = 0, wmm_idx = 0;
__le16 fc = hdr->frame_control;
u16 seqno = 0;
u32 val;
if (vif) {
struct mt7615_vif *mvif = (struct mt7615_vif *)vif->drv_priv;
omac_idx = mvif->omac_idx;
wmm_idx = mvif->wmm_idx;
}
if (sta) {
struct mt7615_sta *msta = (struct mt7615_sta *)sta->drv_priv;
tx_count = msta->rate_count;
}
fc_type = (le16_to_cpu(fc) & IEEE80211_FCTL_FTYPE) >> 2;
fc_stype = (le16_to_cpu(fc) & IEEE80211_FCTL_STYPE) >> 4;
if (ieee80211_is_data(fc) || ieee80211_is_bufferable_mmpdu(fc)) {
q_idx = wmm_idx * MT7615_MAX_WMM_SETS +
skb_get_queue_mapping(skb);
p_fmt = MT_TX_TYPE_CT;
} else if (ieee80211_is_beacon(fc)) {
q_idx = MT_LMAC_BCN0;
p_fmt = MT_TX_TYPE_FW;
} else {
q_idx = MT_LMAC_ALTX0;
p_fmt = MT_TX_TYPE_CT;
}
val = FIELD_PREP(MT_TXD0_TX_BYTES, skb->len + MT_TXD_SIZE) |
FIELD_PREP(MT_TXD0_P_IDX, MT_TX_PORT_IDX_LMAC) |
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_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,
skb->priority & IEEE80211_QOS_CTL_TID_MASK) |
FIELD_PREP(MT_TXD1_PKT_FMT, p_fmt) |
FIELD_PREP(MT_TXD1_OWN_MAC, omac_idx);
txwi[1] = cpu_to_le32(val);
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) {
if (multicast && ieee80211_is_robust_mgmt_frame(skb) &&
key->cipher == WLAN_CIPHER_SUITE_AES_CMAC) {
val |= MT_TXD2_BIP;
txwi[3] = 0;
} else {
txwi[3] = cpu_to_le32(MT_TXD3_PROTECT_FRAME);
}
} else {
txwi[3] = 0;
}
txwi[2] = cpu_to_le32(val);
if (!(info->flags & IEEE80211_TX_CTL_AMPDU))
txwi[2] |= cpu_to_le32(MT_TXD2_BA_DISABLE);
txwi[4] = 0;
txwi[6] = 0;
if (rate->idx >= 0 && rate->count &&
!(info->flags & IEEE80211_TX_CTL_RATE_CTRL_PROBE)) {
bool stbc = info->flags & IEEE80211_TX_CTL_STBC;
u8 bw;
u16 rateval = mt7615_mac_tx_rate_val(dev, rate, stbc, &bw);
txwi[2] |= cpu_to_le32(MT_TXD2_FIX_RATE);
val = MT_TXD6_FIXED_BW |
FIELD_PREP(MT_TXD6_BW, bw) |
FIELD_PREP(MT_TXD6_TX_RATE, rateval);
txwi[6] |= cpu_to_le32(val);
if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
txwi[6] |= cpu_to_le32(MT_TXD6_SGI);
if (info->flags & IEEE80211_TX_CTL_LDPC)
txwi[6] |= cpu_to_le32(MT_TXD6_LDPC);
if (!(rate->flags & (IEEE80211_TX_RC_MCS |
IEEE80211_TX_RC_VHT_MCS)))
txwi[2] |= cpu_to_le32(MT_TXD2_BA_DISABLE);
tx_count = rate->count;
}
if (!ieee80211_is_beacon(fc)) {
val = MT_TXD5_TX_STATUS_HOST | MT_TXD5_SW_POWER_MGMT |
FIELD_PREP(MT_TXD5_PID, pid);
txwi[5] = cpu_to_le32(val);
} else {
txwi[5] = 0;
/* use maximum tx count for beacons */
tx_count = 0x1f;
}
val = FIELD_PREP(MT_TXD3_REM_TX_COUNT, tx_count);
if (ieee80211_is_data_qos(hdr->frame_control)) {
seqno = IEEE80211_SEQ_TO_SN(le16_to_cpu(hdr->seq_ctrl));
val |= MT_TXD3_SN_VALID;
} else if (ieee80211_is_back_req(hdr->frame_control)) {
struct ieee80211_bar *bar = (struct ieee80211_bar *)skb->data;
seqno = IEEE80211_SEQ_TO_SN(le16_to_cpu(bar->start_seq_num));
val |= MT_TXD3_SN_VALID;
}
val |= FIELD_PREP(MT_TXD3_SEQ, seqno);
txwi[3] |= cpu_to_le32(val);
if (info->flags & IEEE80211_TX_CTL_NO_ACK)
txwi[3] |= cpu_to_le32(MT_TXD3_NO_ACK);
txwi[7] = FIELD_PREP(MT_TXD7_TYPE, fc_type) |
FIELD_PREP(MT_TXD7_SUB_TYPE, fc_stype);
return 0;
}
void mt7615_txp_skb_unmap(struct mt76_dev *dev,
struct mt76_txwi_cache *t)
{
struct mt7615_txp *txp;
int i;
txp = mt7615_txwi_to_txp(dev, t);
for (i = 1; i < txp->nbuf; i++)
dma_unmap_single(dev->dev, le32_to_cpu(txp->buf[i]),
le16_to_cpu(txp->len[i]), DMA_TO_DEVICE);
}
static u32 mt7615_mac_wtbl_addr(int wcid)
{
return MT_WTBL_BASE + wcid * MT_WTBL_ENTRY_SIZE;
}
void mt7615_mac_set_rates(struct mt7615_dev *dev, struct mt7615_sta *sta,
struct ieee80211_tx_rate *probe_rate,
struct ieee80211_tx_rate *rates)
{
struct ieee80211_tx_rate *ref;
int wcid = sta->wcid.idx;
u32 addr = mt7615_mac_wtbl_addr(wcid);
bool stbc = false;
int n_rates = sta->n_rates;
u8 bw, bw_prev, bw_idx = 0;
u16 val[4];
u16 probe_val;
u32 w5, w27;
bool rateset;
int i, k;
if (!mt76_poll(dev, MT_WTBL_UPDATE, MT_WTBL_UPDATE_BUSY, 0, 5000))
return;
for (i = n_rates; i < 4; i++)
rates[i] = rates[n_rates - 1];
rateset = !(sta->rate_set_tsf & BIT(0));
memcpy(sta->rateset[rateset].rates, rates,
sizeof(sta->rateset[rateset].rates));
if (probe_rate) {
sta->rateset[rateset].probe_rate = *probe_rate;
ref = &sta->rateset[rateset].probe_rate;
} else {
sta->rateset[rateset].probe_rate.idx = -1;
ref = &sta->rateset[rateset].rates[0];
}
rates = sta->rateset[rateset].rates;
for (i = 0; i < ARRAY_SIZE(sta->rateset[rateset].rates); i++) {
/*
* We don't support switching between short and long GI
* within the rate set. For accurate tx status reporting, we
* need to make sure that flags match.
* For improved performance, avoid duplicate entries by
* decrementing the MCS index if necessary
*/
if ((ref->flags ^ rates[i].flags) & IEEE80211_TX_RC_SHORT_GI)
rates[i].flags ^= IEEE80211_TX_RC_SHORT_GI;
for (k = 0; k < i; k++) {
if (rates[i].idx != rates[k].idx)
continue;
if ((rates[i].flags ^ rates[k].flags) &
(IEEE80211_TX_RC_40_MHZ_WIDTH |
IEEE80211_TX_RC_80_MHZ_WIDTH |
IEEE80211_TX_RC_160_MHZ_WIDTH))
continue;
if (!rates[i].idx)
continue;
rates[i].idx--;
}
}
val[0] = mt7615_mac_tx_rate_val(dev, &rates[0], stbc, &bw);
bw_prev = bw;
if (probe_rate) {
probe_val = mt7615_mac_tx_rate_val(dev, probe_rate, stbc, &bw);
if (bw)
bw_idx = 1;
else
bw_prev = 0;
} else {
probe_val = val[0];
}
val[1] = mt7615_mac_tx_rate_val(dev, &rates[1], stbc, &bw);
if (bw_prev) {
bw_idx = 3;
bw_prev = bw;
}
val[2] = mt7615_mac_tx_rate_val(dev, &rates[2], stbc, &bw);
if (bw_prev) {
bw_idx = 5;
bw_prev = bw;
}
val[3] = mt7615_mac_tx_rate_val(dev, &rates[3], stbc, &bw);
if (bw_prev)
bw_idx = 7;
w27 = mt76_rr(dev, addr + 27 * 4);
w27 &= ~MT_WTBL_W27_CC_BW_SEL;
w27 |= FIELD_PREP(MT_WTBL_W27_CC_BW_SEL, bw);
w5 = mt76_rr(dev, addr + 5 * 4);
w5 &= ~(MT_WTBL_W5_BW_CAP | MT_WTBL_W5_CHANGE_BW_RATE |
MT_WTBL_W5_MPDU_OK_COUNT |
MT_WTBL_W5_MPDU_FAIL_COUNT |
MT_WTBL_W5_RATE_IDX);
w5 |= FIELD_PREP(MT_WTBL_W5_BW_CAP, bw) |
FIELD_PREP(MT_WTBL_W5_CHANGE_BW_RATE, bw_idx ? bw_idx - 1 : 7);
mt76_wr(dev, MT_WTBL_RIUCR0, w5);
mt76_wr(dev, MT_WTBL_RIUCR1,
FIELD_PREP(MT_WTBL_RIUCR1_RATE0, probe_val) |
FIELD_PREP(MT_WTBL_RIUCR1_RATE1, val[0]) |
FIELD_PREP(MT_WTBL_RIUCR1_RATE2_LO, val[1]));
mt76_wr(dev, MT_WTBL_RIUCR2,
FIELD_PREP(MT_WTBL_RIUCR2_RATE2_HI, val[1] >> 8) |
FIELD_PREP(MT_WTBL_RIUCR2_RATE3, val[1]) |
FIELD_PREP(MT_WTBL_RIUCR2_RATE4, val[2]) |
FIELD_PREP(MT_WTBL_RIUCR2_RATE5_LO, val[2]));
mt76_wr(dev, MT_WTBL_RIUCR3,
FIELD_PREP(MT_WTBL_RIUCR3_RATE5_HI, val[2] >> 4) |
FIELD_PREP(MT_WTBL_RIUCR3_RATE6, val[3]) |
FIELD_PREP(MT_WTBL_RIUCR3_RATE7, val[3]));
mt76_wr(dev, MT_WTBL_UPDATE,
FIELD_PREP(MT_WTBL_UPDATE_WLAN_IDX, wcid) |
MT_WTBL_UPDATE_RATE_UPDATE |
MT_WTBL_UPDATE_TX_COUNT_CLEAR);
mt76_wr(dev, addr + 27 * 4, w27);
mt76_set(dev, MT_LPON_T0CR, MT_LPON_T0CR_MODE); /* TSF read */
sta->rate_set_tsf = (mt76_rr(dev, MT_LPON_UTTR0) & ~BIT(0)) | rateset;
if (!(sta->wcid.tx_info & MT_WCID_TX_INFO_SET))
mt76_poll(dev, MT_WTBL_UPDATE, MT_WTBL_UPDATE_BUSY, 0, 5000);
sta->rate_count = 2 * MT7615_RATE_RETRY * n_rates;
sta->wcid.tx_info |= MT_WCID_TX_INFO_SET;
}
static enum mt7615_cipher_type
mt7615_mac_get_cipher(int cipher)
{
switch (cipher) {
case WLAN_CIPHER_SUITE_WEP40:
return MT_CIPHER_WEP40;
case WLAN_CIPHER_SUITE_WEP104:
return MT_CIPHER_WEP104;
case WLAN_CIPHER_SUITE_TKIP:
return MT_CIPHER_TKIP;
case WLAN_CIPHER_SUITE_AES_CMAC:
return MT_CIPHER_BIP_CMAC_128;
case WLAN_CIPHER_SUITE_CCMP:
return MT_CIPHER_AES_CCMP;
case WLAN_CIPHER_SUITE_CCMP_256:
return MT_CIPHER_CCMP_256;
case WLAN_CIPHER_SUITE_GCMP:
return MT_CIPHER_GCMP;
case WLAN_CIPHER_SUITE_GCMP_256:
return MT_CIPHER_GCMP_256;
case WLAN_CIPHER_SUITE_SMS4:
return MT_CIPHER_WAPI;
default:
return MT_CIPHER_NONE;
}
}
static int
mt7615_mac_wtbl_update_key(struct mt7615_dev *dev, struct mt76_wcid *wcid,
struct ieee80211_key_conf *key,
enum mt7615_cipher_type cipher,
enum set_key_cmd cmd)
{
u32 addr = mt7615_mac_wtbl_addr(wcid->idx) + 30 * 4;
u8 data[32] = {};
if (key->keylen > sizeof(data))
return -EINVAL;
mt76_rr_copy(dev, addr, data, sizeof(data));
if (cmd == SET_KEY) {
if (cipher == MT_CIPHER_TKIP) {
/* Rx/Tx MIC keys are swapped */
memcpy(data + 16, key->key + 24, 8);
memcpy(data + 24, key->key + 16, 8);
}
if (cipher != MT_CIPHER_BIP_CMAC_128 && wcid->cipher)
memmove(data + 16, data, 16);
if (cipher != MT_CIPHER_BIP_CMAC_128 || !wcid->cipher)
memcpy(data, key->key, key->keylen);
else if (cipher == MT_CIPHER_BIP_CMAC_128)
memcpy(data + 16, key->key, 16);
} else {
if (wcid->cipher & ~BIT(cipher)) {
if (cipher != MT_CIPHER_BIP_CMAC_128)
memmove(data, data + 16, 16);
memset(data + 16, 0, 16);
} else {
memset(data, 0, sizeof(data));
}
}
mt76_wr_copy(dev, addr, data, sizeof(data));
return 0;
}
static int
mt7615_mac_wtbl_update_pk(struct mt7615_dev *dev, struct mt76_wcid *wcid,
enum mt7615_cipher_type cipher, int keyidx,
enum set_key_cmd cmd)
{
u32 addr = mt7615_mac_wtbl_addr(wcid->idx), w0, w1;
if (!mt76_poll(dev, MT_WTBL_UPDATE, MT_WTBL_UPDATE_BUSY, 0, 5000))
return -ETIMEDOUT;
w0 = mt76_rr(dev, addr);
w1 = mt76_rr(dev, addr + 4);
if (cmd == SET_KEY) {
w0 |= MT_WTBL_W0_RX_KEY_VALID |
FIELD_PREP(MT_WTBL_W0_RX_IK_VALID,
cipher == MT_CIPHER_BIP_CMAC_128);
if (cipher != MT_CIPHER_BIP_CMAC_128 ||
!wcid->cipher)
w0 |= FIELD_PREP(MT_WTBL_W0_KEY_IDX, keyidx);
} else {
if (!(wcid->cipher & ~BIT(cipher)))
w0 &= ~(MT_WTBL_W0_RX_KEY_VALID |
MT_WTBL_W0_KEY_IDX);
if (cipher == MT_CIPHER_BIP_CMAC_128)
w0 &= ~MT_WTBL_W0_RX_IK_VALID;
}
mt76_wr(dev, MT_WTBL_RICR0, w0);
mt76_wr(dev, MT_WTBL_RICR1, w1);
mt76_wr(dev, MT_WTBL_UPDATE,
FIELD_PREP(MT_WTBL_UPDATE_WLAN_IDX, wcid->idx) |
MT_WTBL_UPDATE_RXINFO_UPDATE);
if (!mt76_poll(dev, MT_WTBL_UPDATE, MT_WTBL_UPDATE_BUSY, 0, 5000))
return -ETIMEDOUT;
return 0;
}
static void
mt7615_mac_wtbl_update_cipher(struct mt7615_dev *dev, struct mt76_wcid *wcid,
enum mt7615_cipher_type cipher,
enum set_key_cmd cmd)
{
u32 addr = mt7615_mac_wtbl_addr(wcid->idx);
if (cmd == SET_KEY) {
if (cipher != MT_CIPHER_BIP_CMAC_128 || !wcid->cipher)
mt76_rmw(dev, addr + 2 * 4, MT_WTBL_W2_KEY_TYPE,
FIELD_PREP(MT_WTBL_W2_KEY_TYPE, cipher));
} else {
if (cipher != MT_CIPHER_BIP_CMAC_128 &&
wcid->cipher & BIT(MT_CIPHER_BIP_CMAC_128))
mt76_rmw(dev, addr + 2 * 4, MT_WTBL_W2_KEY_TYPE,
FIELD_PREP(MT_WTBL_W2_KEY_TYPE,
MT_CIPHER_BIP_CMAC_128));
else if (!(wcid->cipher & ~BIT(cipher)))
mt76_clear(dev, addr + 2 * 4, MT_WTBL_W2_KEY_TYPE);
}
}
int mt7615_mac_wtbl_set_key(struct mt7615_dev *dev,
struct mt76_wcid *wcid,
struct ieee80211_key_conf *key,
enum set_key_cmd cmd)
{
enum mt7615_cipher_type cipher;
int err;
cipher = mt7615_mac_get_cipher(key->cipher);
if (cipher == MT_CIPHER_NONE)
return -EOPNOTSUPP;
spin_lock_bh(&dev->mt76.lock);
mt7615_mac_wtbl_update_cipher(dev, wcid, cipher, cmd);
err = mt7615_mac_wtbl_update_key(dev, wcid, key, cipher, cmd);
if (err < 0)
goto out;
err = mt7615_mac_wtbl_update_pk(dev, wcid, cipher, key->keyidx,
cmd);
if (err < 0)
goto out;
if (cmd == SET_KEY)
wcid->cipher |= BIT(cipher);
else
wcid->cipher &= ~BIT(cipher);
out:
spin_unlock_bh(&dev->mt76.lock);
return err;
}
int mt7615_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 mt7615_dev *dev = container_of(mdev, struct mt7615_dev, mt76);
struct mt7615_sta *msta = container_of(wcid, struct mt7615_sta, wcid);
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;
int i, pid, id, nbuf = tx_info->nbuf - 1;
u8 *txwi = (u8 *)txwi_ptr;
struct mt76_txwi_cache *t;
struct mt7615_txp *txp;
if (!wcid)
wcid = &dev->mt76.global_wcid;
pid = mt76_tx_status_skb_add(mdev, wcid, tx_info->skb);
if (info->flags & IEEE80211_TX_CTL_RATE_CTRL_PROBE) {
spin_lock_bh(&dev->mt76.lock);
mt7615_mac_set_rates(dev, msta, &info->control.rates[0],
msta->rates);
msta->rate_probe = true;
spin_unlock_bh(&dev->mt76.lock);
}
mt7615_mac_write_txwi(dev, txwi_ptr, tx_info->skb, wcid, sta,
pid, key);
txp = (struct mt7615_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;
/* pass partial skb header to fw */
tx_info->buf[1].len = MT_CT_PARSE_LEN;
tx_info->nbuf = MT_CT_DMA_BUF_NUM;
txp->flags = cpu_to_le16(MT_CT_INFO_APPLY_TXD);
if (!key)
txp->flags |= cpu_to_le16(MT_CT_INFO_NONE_CIPHER_FRAME);
if (ieee80211_is_mgmt(hdr->frame_control))
txp->flags |= cpu_to_le16(MT_CT_INFO_MGMT_FRAME);
if (vif) {
struct mt7615_vif *mvif = (struct mt7615_vif *)vif->drv_priv;
txp->bss_idx = mvif->idx;
}
t = (struct mt76_txwi_cache *)(txwi + mdev->drv->txwi_size);
t->skb = tx_info->skb;
spin_lock_bh(&dev->token_lock);
id = idr_alloc(&dev->token, t, 0, MT7615_TOKEN_SIZE, GFP_ATOMIC);
spin_unlock_bh(&dev->token_lock);
if (id < 0)
return id;
txp->token = cpu_to_le16(id);
txp->rept_wds_wcid = 0xff;
tx_info->skb = DMA_DUMMY_DATA;
return 0;
}
static bool mt7615_fill_txs(struct mt7615_dev *dev, struct mt7615_sta *sta,
struct ieee80211_tx_info *info, __le32 *txs_data)
{
struct ieee80211_supported_band *sband;
struct mt7615_rate_set *rs;
int first_idx = 0, last_idx;
int i, idx, count;
bool fixed_rate, ack_timeout;
bool probe, ampdu, cck = false;
bool rs_idx;
u32 rate_set_tsf;
u32 final_rate, final_rate_flags, final_nss, txs;
fixed_rate = info->status.rates[0].count;
probe = !!(info->flags & IEEE80211_TX_CTL_RATE_CTRL_PROBE);
txs = le32_to_cpu(txs_data[1]);
ampdu = !fixed_rate && (txs & MT_TXS1_AMPDU);
txs = le32_to_cpu(txs_data[3]);
count = FIELD_GET(MT_TXS3_TX_COUNT, txs);
last_idx = FIELD_GET(MT_TXS3_LAST_TX_RATE, txs);
txs = le32_to_cpu(txs_data[0]);
final_rate = FIELD_GET(MT_TXS0_TX_RATE, txs);
ack_timeout = txs & MT_TXS0_ACK_TIMEOUT;
if (!ampdu && (txs & MT_TXS0_RTS_TIMEOUT))
return false;
if (txs & MT_TXS0_QUEUE_TIMEOUT)
return false;
if (!ack_timeout)
info->flags |= IEEE80211_TX_STAT_ACK;
info->status.ampdu_len = 1;
info->status.ampdu_ack_len = !!(info->flags &
IEEE80211_TX_STAT_ACK);
if (ampdu || (info->flags & IEEE80211_TX_CTL_AMPDU))
info->flags |= IEEE80211_TX_STAT_AMPDU | IEEE80211_TX_CTL_AMPDU;
first_idx = max_t(int, 0, last_idx - (count + 1) / MT7615_RATE_RETRY);
if (fixed_rate && !probe) {
info->status.rates[0].count = count;
i = 0;
goto out;
}
rate_set_tsf = READ_ONCE(sta->rate_set_tsf);
rs_idx = !((u32)(FIELD_GET(MT_TXS4_F0_TIMESTAMP, le32_to_cpu(txs_data[4])) -
rate_set_tsf) < 1000000);
rs_idx ^= rate_set_tsf & BIT(0);
rs = &sta->rateset[rs_idx];
if (!first_idx && rs->probe_rate.idx >= 0) {
info->status.rates[0] = rs->probe_rate;
spin_lock_bh(&dev->mt76.lock);
if (sta->rate_probe) {
mt7615_mac_set_rates(dev, sta, NULL, sta->rates);
sta->rate_probe = false;
}
spin_unlock_bh(&dev->mt76.lock);
} else {
info->status.rates[0] = rs->rates[first_idx / 2];
}
info->status.rates[0].count = 0;
for (i = 0, idx = first_idx; count && idx <= last_idx; idx++) {
struct ieee80211_tx_rate *cur_rate;
int cur_count;
cur_rate = &rs->rates[idx / 2];
cur_count = min_t(int, MT7615_RATE_RETRY, count);
count -= cur_count;
if (idx && (cur_rate->idx != info->status.rates[i].idx ||
cur_rate->flags != info->status.rates[i].flags)) {
i++;
if (i == ARRAY_SIZE(info->status.rates)) {
i--;
break;
}
info->status.rates[i] = *cur_rate;
info->status.rates[i].count = 0;
}
info->status.rates[i].count += cur_count;
}
out:
final_rate_flags = info->status.rates[i].flags;
switch (FIELD_GET(MT_TX_RATE_MODE, final_rate)) {
case MT_PHY_TYPE_CCK:
cck = true;
/* fall through */
case MT_PHY_TYPE_OFDM:
if (dev->mt76.chandef.chan->band == NL80211_BAND_5GHZ)
sband = &dev->mt76.sband_5g.sband;
else
sband = &dev->mt76.sband_2g.sband;
final_rate &= MT_TX_RATE_IDX;
final_rate = mt76_get_rate(&dev->mt76, sband, final_rate,
cck);
final_rate_flags = 0;
break;
case MT_PHY_TYPE_HT_GF:
case MT_PHY_TYPE_HT:
final_rate_flags |= IEEE80211_TX_RC_MCS;
final_rate &= MT_TX_RATE_IDX;
if (final_rate > 31)
return false;
break;
case MT_PHY_TYPE_VHT:
final_nss = FIELD_GET(MT_TX_RATE_NSS, final_rate);
if ((final_rate & MT_TX_RATE_STBC) && final_nss)
final_nss--;
final_rate_flags |= IEEE80211_TX_RC_VHT_MCS;
final_rate = (final_rate & MT_TX_RATE_IDX) | (final_nss << 4);
break;
default:
return false;
}
info->status.rates[i].idx = final_rate;
info->status.rates[i].flags = final_rate_flags;
return true;
}
static bool mt7615_mac_add_txs_skb(struct mt7615_dev *dev,
struct mt7615_sta *sta, int pid,
__le32 *txs_data)
{
struct mt76_dev *mdev = &dev->mt76;
struct sk_buff_head list;
struct sk_buff *skb;
if (pid < MT_PACKET_ID_FIRST)
return false;
mt76_tx_status_lock(mdev, &list);
skb = mt76_tx_status_skb_get(mdev, &sta->wcid, pid, &list);
if (skb) {
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
if (!mt7615_fill_txs(dev, sta, info, txs_data)) {
ieee80211_tx_info_clear_status(info);
info->status.rates[0].idx = -1;
}
mt76_tx_status_skb_done(mdev, skb, &list);
}
mt76_tx_status_unlock(mdev, &list);
return !!skb;
}
void mt7615_mac_add_txs(struct mt7615_dev *dev, void *data)
{
struct ieee80211_tx_info info = {};
struct ieee80211_sta *sta = NULL;
struct mt7615_sta *msta = NULL;
struct mt76_wcid *wcid;
__le32 *txs_data = data;
u32 txs;
u8 wcidx;
u8 pid;
txs = le32_to_cpu(txs_data[0]);
pid = FIELD_GET(MT_TXS0_PID, txs);
txs = le32_to_cpu(txs_data[2]);
wcidx = FIELD_GET(MT_TXS2_WCID, txs);
if (pid == MT_PACKET_ID_NO_ACK)
return;
if (wcidx >= ARRAY_SIZE(dev->mt76.wcid))
return;
rcu_read_lock();
wcid = rcu_dereference(dev->mt76.wcid[wcidx]);
if (!wcid)
goto out;
msta = container_of(wcid, struct mt7615_sta, wcid);
sta = wcid_to_sta(wcid);
if (mt7615_mac_add_txs_skb(dev, msta, pid, txs_data))
goto out;
if (wcidx >= MT7615_WTBL_STA || !sta)
goto out;
if (mt7615_fill_txs(dev, msta, &info, txs_data))
ieee80211_tx_status_noskb(mt76_hw(dev), sta, &info);
out:
rcu_read_unlock();
}
void mt7615_mac_tx_free(struct mt7615_dev *dev, struct sk_buff *skb)
{
struct mt7615_tx_free *free = (struct mt7615_tx_free *)skb->data;
struct mt76_dev *mdev = &dev->mt76;
struct mt76_txwi_cache *txwi;
u8 i, count;
count = FIELD_GET(MT_TX_FREE_MSDU_ID_CNT, le16_to_cpu(free->ctrl));
for (i = 0; i < count; i++) {
spin_lock_bh(&dev->token_lock);
txwi = idr_remove(&dev->token, le16_to_cpu(free->token[i]));
spin_unlock_bh(&dev->token_lock);
if (!txwi)
continue;
mt7615_txp_skb_unmap(mdev, txwi);
if (txwi->skb) {
mt76_tx_complete_skb(mdev, txwi->skb);
txwi->skb = NULL;
}
mt76_put_txwi(mdev, txwi);
}
dev_kfree_skb(skb);
}
static void
mt7615_mac_set_default_sensitivity(struct mt7615_dev *dev)
{
mt76_rmw(dev, MT_WF_PHY_B0_MIN_PRI_PWR,
MT_WF_PHY_B0_PD_OFDM_MASK,
MT_WF_PHY_B0_PD_OFDM(0x13c));
mt76_rmw(dev, MT_WF_PHY_B1_MIN_PRI_PWR,
MT_WF_PHY_B1_PD_OFDM_MASK,
MT_WF_PHY_B1_PD_OFDM(0x13c));
mt76_rmw(dev, MT_WF_PHY_B0_RXTD_CCK_PD,
MT_WF_PHY_B0_PD_CCK_MASK,
MT_WF_PHY_B0_PD_CCK(0x92));
mt76_rmw(dev, MT_WF_PHY_B1_RXTD_CCK_PD,
MT_WF_PHY_B1_PD_CCK_MASK,
MT_WF_PHY_B1_PD_CCK(0x92));
dev->ofdm_sensitivity = -98;
dev->cck_sensitivity = -110;
dev->last_cca_adj = jiffies;
}
void mt7615_mac_set_scs(struct mt7615_dev *dev, bool enable)
{
mutex_lock(&dev->mt76.mutex);
if (dev->scs_en == enable)
goto out;
if (enable) {
/* DBDC not supported */
mt76_set(dev, MT_WF_PHY_B0_MIN_PRI_PWR,
MT_WF_PHY_B0_PD_BLK);
if (is_mt7622(&dev->mt76)) {
mt76_set(dev, MT_MIB_M0_MISC_CR, 0x7 << 8);
mt76_set(dev, MT_MIB_M0_MISC_CR, 0x7);
}
} else {
mt76_clear(dev, MT_WF_PHY_B0_MIN_PRI_PWR,
MT_WF_PHY_B0_PD_BLK);
mt76_clear(dev, MT_WF_PHY_B1_MIN_PRI_PWR,
MT_WF_PHY_B1_PD_BLK);
}
mt7615_mac_set_default_sensitivity(dev);
dev->scs_en = enable;
out:
mutex_unlock(&dev->mt76.mutex);
}
void mt7615_mac_cca_stats_reset(struct mt7615_dev *dev)
{
mt76_clear(dev, MT_WF_PHY_R0_B0_PHYMUX_5, GENMASK(22, 20));
mt76_set(dev, MT_WF_PHY_R0_B0_PHYMUX_5, BIT(22) | BIT(20));
}
static void
mt7615_mac_adjust_sensitivity(struct mt7615_dev *dev,
u32 rts_err_rate, bool ofdm)
{
int false_cca = ofdm ? dev->false_cca_ofdm : dev->false_cca_cck;
u16 def_th = ofdm ? -98 : -110;
bool update = false;
s8 *sensitivity;
int signal;
sensitivity = ofdm ? &dev->ofdm_sensitivity : &dev->cck_sensitivity;
signal = mt76_get_min_avg_rssi(&dev->mt76);
if (!signal) {
mt7615_mac_set_default_sensitivity(dev);
return;
}
signal = min(signal, -72);
if (false_cca > 500) {
if (rts_err_rate > MT_FRAC(40, 100))
return;
/* decrease coverage */
if (*sensitivity == def_th && signal > -90) {
*sensitivity = -90;
update = true;
} else if (*sensitivity + 2 < signal) {
*sensitivity += 2;
update = true;
}
} else if ((false_cca > 0 && false_cca < 50) ||
rts_err_rate > MT_FRAC(60, 100)) {
/* increase coverage */
if (*sensitivity - 2 >= def_th) {
*sensitivity -= 2;
update = true;
}
}
if (*sensitivity > signal) {
*sensitivity = signal;
update = true;
}
if (update) {
u16 val;
if (ofdm) {
/* DBDC not supported */
val = *sensitivity * 2 + 512;
mt76_rmw(dev, MT_WF_PHY_B0_MIN_PRI_PWR,
MT_WF_PHY_B0_PD_OFDM_MASK,
MT_WF_PHY_B0_PD_OFDM(val));
} else {
val = *sensitivity + 256;
mt76_rmw(dev, MT_WF_PHY_B0_RXTD_CCK_PD,
MT_WF_PHY_B0_PD_CCK_MASK,
MT_WF_PHY_B0_PD_CCK(val));
mt76_rmw(dev, MT_WF_PHY_B1_RXTD_CCK_PD,
MT_WF_PHY_B1_PD_CCK_MASK,
MT_WF_PHY_B1_PD_CCK(val));
}
dev->last_cca_adj = jiffies;
}
}
static void
mt7615_mac_scs_check(struct mt7615_dev *dev)
{
u32 val, rts_cnt = 0, rts_retries_cnt = 0, rts_err_rate = 0;
u32 mdrdy_cck, mdrdy_ofdm, pd_cck, pd_ofdm;
int i;
if (!dev->scs_en)
return;
for (i = 0; i < 4; i++) {
u32 data;
val = mt76_rr(dev, MT_MIB_MB_SDR0(i));
data = FIELD_GET(MT_MIB_RTS_RETRIES_COUNT_MASK, val);
if (data > rts_retries_cnt) {
rts_cnt = FIELD_GET(MT_MIB_RTS_COUNT_MASK, val);
rts_retries_cnt = data;
}
}
val = mt76_rr(dev, MT_WF_PHY_R0_B0_PHYCTRL_STS0);
pd_cck = FIELD_GET(MT_WF_PHYCTRL_STAT_PD_CCK, val);
pd_ofdm = FIELD_GET(MT_WF_PHYCTRL_STAT_PD_OFDM, val);
val = mt76_rr(dev, MT_WF_PHY_R0_B0_PHYCTRL_STS5);
mdrdy_cck = FIELD_GET(MT_WF_PHYCTRL_STAT_MDRDY_CCK, val);
mdrdy_ofdm = FIELD_GET(MT_WF_PHYCTRL_STAT_MDRDY_OFDM, val);
dev->false_cca_ofdm = pd_ofdm - mdrdy_ofdm;
dev->false_cca_cck = pd_cck - mdrdy_cck;
mt7615_mac_cca_stats_reset(dev);
if (rts_cnt + rts_retries_cnt)
rts_err_rate = MT_FRAC(rts_retries_cnt,
rts_cnt + rts_retries_cnt);
/* cck */
mt7615_mac_adjust_sensitivity(dev, rts_err_rate, false);
/* ofdm */
mt7615_mac_adjust_sensitivity(dev, rts_err_rate, true);
if (time_after(jiffies, dev->last_cca_adj + 10 * HZ))
mt7615_mac_set_default_sensitivity(dev);
}
void mt7615_update_channel(struct mt76_dev *mdev)
{
struct mt7615_dev *dev = container_of(mdev, struct mt7615_dev, mt76);
struct mt76_channel_state *state;
ktime_t cur_time;
u32 busy;
if (!test_bit(MT76_STATE_RUNNING, &mdev->state))
return;
state = mt76_channel_state(mdev, mdev->chandef.chan);
/* TODO: add DBDC support */
busy = mt76_get_field(dev, MT_MIB_SDR16(0), MT_MIB_BUSY_MASK);
spin_lock_bh(&mdev->cc_lock);
cur_time = ktime_get_boottime();
state->cc_busy += busy;
state->cc_active += ktime_to_us(ktime_sub(cur_time,
mdev->survey_time));
mdev->survey_time = cur_time;
spin_unlock_bh(&mdev->cc_lock);
}
void mt7615_mac_work(struct work_struct *work)
{
struct mt7615_dev *dev;
dev = (struct mt7615_dev *)container_of(work, struct mt76_dev,
mac_work.work);
mutex_lock(&dev->mt76.mutex);
mt7615_update_channel(&dev->mt76);
if (++dev->mac_work_count == 5) {
mt7615_mac_scs_check(dev);
dev->mac_work_count = 0;
}
mutex_unlock(&dev->mt76.mutex);
mt76_tx_status_check(&dev->mt76, NULL, false);
ieee80211_queue_delayed_work(mt76_hw(dev), &dev->mt76.mac_work,
MT7615_WATCHDOG_TIME);
}
int mt7615_dfs_stop_radar_detector(struct mt7615_dev *dev)
{
struct cfg80211_chan_def *chandef = &dev->mt76.chandef;
int err;
err = mt7615_mcu_rdd_cmd(dev, RDD_STOP, MT_HW_RDD0,
MT_RX_SEL0, 0);
if (err < 0)
return err;
if (chandef->width == NL80211_CHAN_WIDTH_160 ||
chandef->width == NL80211_CHAN_WIDTH_80P80)
err = mt7615_mcu_rdd_cmd(dev, RDD_STOP, MT_HW_RDD1,
MT_RX_SEL0, 0);
return err;
}
static int mt7615_dfs_start_rdd(struct mt7615_dev *dev, int chain)
{
int err;
err = mt7615_mcu_rdd_cmd(dev, RDD_START, chain, MT_RX_SEL0, 0);
if (err < 0)
return err;
return mt7615_mcu_rdd_cmd(dev, RDD_DET_MODE, chain,
MT_RX_SEL0, 1);
}
int mt7615_dfs_start_radar_detector(struct mt7615_dev *dev)
{
struct cfg80211_chan_def *chandef = &dev->mt76.chandef;
int err;
/* start CAC */
err = mt7615_mcu_rdd_cmd(dev, RDD_CAC_START, MT_HW_RDD0,
MT_RX_SEL0, 0);
if (err < 0)
return err;
/* TODO: DBDC support */
err = mt7615_dfs_start_rdd(dev, MT_HW_RDD0);
if (err < 0)
return err;
if (chandef->width == NL80211_CHAN_WIDTH_160 ||
chandef->width == NL80211_CHAN_WIDTH_80P80) {
err = mt7615_dfs_start_rdd(dev, MT_HW_RDD1);
if (err < 0)
return err;
}
return 0;
}
int mt7615_dfs_init_radar_detector(struct mt7615_dev *dev)
{
struct cfg80211_chan_def *chandef = &dev->mt76.chandef;
int err;
if (dev->mt76.region == NL80211_DFS_UNSET)
return 0;
if (test_bit(MT76_SCANNING, &dev->mt76.state))
return 0;
if (dev->dfs_state == chandef->chan->dfs_state)
return 0;
dev->dfs_state = chandef->chan->dfs_state;
if (chandef->chan->flags & IEEE80211_CHAN_RADAR) {
if (chandef->chan->dfs_state != NL80211_DFS_AVAILABLE)
return mt7615_dfs_start_radar_detector(dev);
else
return mt7615_mcu_rdd_cmd(dev, RDD_CAC_END, MT_HW_RDD0,
MT_RX_SEL0, 0);
} else {
err = mt7615_mcu_rdd_cmd(dev, RDD_NORMAL_START,
MT_HW_RDD0, MT_RX_SEL0, 0);
if (err < 0)
return err;
return mt7615_dfs_stop_radar_detector(dev);
}
}
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