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android-kvm / linux / d635f6cc934bcd467c5d67148ece74632fd96abf / . / drivers / net / wireless / mediatek / mt76 / mt7996 / mac.c
blob: 39a4a73ef8e6a10bcdaafce6bbc96ba25705b7a9 [file] [log] [blame]
// SPDX-License-Identifier: ISC
/*
* Copyright (C) 2022 MediaTek Inc.
*/
#include <linux/etherdevice.h>
#include <linux/timekeeping.h>
#include "coredump.h"
#include "mt7996.h"
#include "../dma.h"
#include "mac.h"
#include "mcu.h"
#define to_rssi(field, rcpi) ((FIELD_GET(field, rcpi) - 220) / 2)
#define HE_BITS(f) cpu_to_le16(IEEE80211_RADIOTAP_HE_##f)
#define HE_PREP(f, m, v) le16_encode_bits(le32_get_bits(v, MT_CRXV_HE_##m),\
IEEE80211_RADIOTAP_HE_##f)
static const struct mt7996_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 mt7996_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 mt7996_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 *mt7996_rx_get_wcid(struct mt7996_dev *dev,
u16 idx, bool unicast)
{
struct mt7996_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 mt7996_sta, wcid);
if (!sta->vif)
return NULL;
return &sta->vif->sta.wcid;
}
bool mt7996_mac_wtbl_update(struct mt7996_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 mt7996_mac_wtbl_lmac_addr(struct mt7996_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 mt7996_mac_sta_poll(struct mt7996_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 mt7996_sta *msta;
struct rate_info *rate;
u32 tx_time[IEEE80211_NUM_ACS], rx_time[IEEE80211_NUM_ACS];
LIST_HEAD(sta_poll_list);
int i;
spin_lock_bh(&dev->sta_poll_lock);
list_splice_init(&dev->sta_poll_list, &sta_poll_list);
spin_unlock_bh(&dev->sta_poll_lock);
rcu_read_lock();
while (true) {
bool clear = false;
u32 addr, val;
u16 idx;
s8 rssi[4];
u8 bw;
spin_lock_bh(&dev->sta_poll_lock);
if (list_empty(&sta_poll_list)) {
spin_unlock_bh(&dev->sta_poll_lock);
break;
}
msta = list_first_entry(&sta_poll_list,
struct mt7996_sta, poll_list);
list_del_init(&msta->poll_list);
spin_unlock_bh(&dev->sta_poll_lock);
idx = msta->wcid.idx;
/* refresh peer's airtime reporting */
addr = mt7996_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) {
mt7996_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;
switch (rate->bw) {
case RATE_INFO_BW_320:
bw = IEEE80211_STA_RX_BW_320;
break;
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;
}
addr = mt7996_mac_wtbl_lmac_addr(dev, idx, 6);
val = mt76_rr(dev, addr);
if (rate->flags & RATE_INFO_FLAGS_EHT_MCS) {
addr = mt7996_mac_wtbl_lmac_addr(dev, idx, 5);
val = mt76_rr(dev, addr);
rate->eht_gi = FIELD_GET(GENMASK(25, 24), val);
} else 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;
}
/* get signal strength of resp frames (CTS/BA/ACK) */
addr = mt7996_mac_wtbl_lmac_addr(dev, idx, 34);
val = mt76_rr(dev, addr);
rssi[0] = to_rssi(GENMASK(7, 0), val);
rssi[1] = to_rssi(GENMASK(15, 8), val);
rssi[2] = to_rssi(GENMASK(23, 16), val);
rssi[3] = to_rssi(GENMASK(31, 14), val);
msta->ack_signal =
mt76_rx_signal(msta->vif->phy->mt76->antenna_mask, rssi);
ewma_avg_signal_add(&msta->avg_ack_signal, -msta->ack_signal);
}
rcu_read_unlock();
}
void mt7996_mac_enable_rtscts(struct mt7996_dev *dev,
struct ieee80211_vif *vif, bool enable)
{
struct mt7996_vif *mvif = (struct mt7996_vif *)vif->drv_priv;
u32 addr;
addr = mt7996_mac_wtbl_lmac_addr(dev, mvif->sta.wcid.idx, 5);
if (enable)
mt76_set(dev, addr, BIT(5));
else
mt76_clear(dev, addr, BIT(5));
}
void mt7996_mac_set_fixed_rate_table(struct mt7996_dev *dev,
u8 tbl_idx, u16 rate_idx)
{
u32 ctrl = MT_WTBL_ITCR_WR | MT_WTBL_ITCR_EXEC | tbl_idx;
mt76_wr(dev, MT_WTBL_ITDR0, rate_idx);
/* use wtbl spe idx */
mt76_wr(dev, MT_WTBL_ITDR1, MT_WTBL_SPE_IDX_SEL);
mt76_wr(dev, MT_WTBL_ITCR, ctrl);
}
static void
mt7996_mac_decode_he_radiotap_ru(struct mt76_rx_status *status,
struct ieee80211_radiotap_he *he,
__le32 *rxv)
{
u32 ru, offs = 0;
ru = le32_get_bits(rxv[0], MT_PRXV_HE_RU_ALLOC);
status->bw = RATE_INFO_BW_HE_RU;
switch (ru) {
case 0 ... 36:
status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_26;
offs = ru;
break;
case 37 ... 52:
status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_52;
offs = ru - 37;
break;
case 53 ... 60:
status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_106;
offs = ru - 53;
break;
case 61 ... 64:
status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_242;
offs = ru - 61;
break;
case 65 ... 66:
status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_484;
offs = ru - 65;
break;
case 67:
status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_996;
break;
case 68:
status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_2x996;
break;
}
he->data1 |= HE_BITS(DATA1_BW_RU_ALLOC_KNOWN);
he->data2 |= HE_BITS(DATA2_RU_OFFSET_KNOWN) |
le16_encode_bits(offs,
IEEE80211_RADIOTAP_HE_DATA2_RU_OFFSET);
}
static void
mt7996_mac_decode_he_mu_radiotap(struct sk_buff *skb, __le32 *rxv)
{
struct mt76_rx_status *status = (struct mt76_rx_status *)skb->cb;
static const struct ieee80211_radiotap_he_mu mu_known = {
.flags1 = HE_BITS(MU_FLAGS1_SIG_B_MCS_KNOWN) |
HE_BITS(MU_FLAGS1_SIG_B_DCM_KNOWN) |
HE_BITS(MU_FLAGS1_CH1_RU_KNOWN) |
HE_BITS(MU_FLAGS1_SIG_B_SYMS_USERS_KNOWN),
.flags2 = HE_BITS(MU_FLAGS2_BW_FROM_SIG_A_BW_KNOWN),
};
struct ieee80211_radiotap_he_mu *he_mu = NULL;
status->flag |= RX_FLAG_RADIOTAP_HE_MU;
he_mu = skb_push(skb, sizeof(mu_known));
memcpy(he_mu, &mu_known, sizeof(mu_known));
#define MU_PREP(f, v) le16_encode_bits(v, IEEE80211_RADIOTAP_HE_MU_##f)
he_mu->flags1 |= MU_PREP(FLAGS1_SIG_B_MCS, status->rate_idx);
if (status->he_dcm)
he_mu->flags1 |= MU_PREP(FLAGS1_SIG_B_DCM, status->he_dcm);
he_mu->flags2 |= MU_PREP(FLAGS2_BW_FROM_SIG_A_BW, status->bw) |
MU_PREP(FLAGS2_SIG_B_SYMS_USERS,
le32_get_bits(rxv[4], MT_CRXV_HE_NUM_USER));
he_mu->ru_ch1[0] = le32_get_bits(rxv[16], MT_CRXV_HE_RU0) & 0xff;
if (status->bw >= RATE_INFO_BW_40) {
he_mu->flags1 |= HE_BITS(MU_FLAGS1_CH2_RU_KNOWN);
he_mu->ru_ch2[0] = le32_get_bits(rxv[16], MT_CRXV_HE_RU1) & 0xff;
}
if (status->bw >= RATE_INFO_BW_80) {
u32 ru_h, ru_l;
he_mu->ru_ch1[1] = le32_get_bits(rxv[16], MT_CRXV_HE_RU2) & 0xff;
ru_l = le32_get_bits(rxv[16], MT_CRXV_HE_RU3_L);
ru_h = le32_get_bits(rxv[17], MT_CRXV_HE_RU3_H) & 0x7;
he_mu->ru_ch2[1] = (u8)(ru_l | ru_h << 4);
}
}
static void
mt7996_mac_decode_he_radiotap(struct sk_buff *skb, __le32 *rxv, u8 mode)
{
struct mt76_rx_status *status = (struct mt76_rx_status *)skb->cb;
static const struct ieee80211_radiotap_he known = {
.data1 = HE_BITS(DATA1_DATA_MCS_KNOWN) |
HE_BITS(DATA1_DATA_DCM_KNOWN) |
HE_BITS(DATA1_STBC_KNOWN) |
HE_BITS(DATA1_CODING_KNOWN) |
HE_BITS(DATA1_LDPC_XSYMSEG_KNOWN) |
HE_BITS(DATA1_DOPPLER_KNOWN) |
HE_BITS(DATA1_SPTL_REUSE_KNOWN) |
HE_BITS(DATA1_BSS_COLOR_KNOWN),
.data2 = HE_BITS(DATA2_GI_KNOWN) |
HE_BITS(DATA2_TXBF_KNOWN) |
HE_BITS(DATA2_PE_DISAMBIG_KNOWN) |
HE_BITS(DATA2_TXOP_KNOWN),
};
struct ieee80211_radiotap_he *he = NULL;
u32 ltf_size = le32_get_bits(rxv[4], MT_CRXV_HE_LTF_SIZE) + 1;
status->flag |= RX_FLAG_RADIOTAP_HE;
he = skb_push(skb, sizeof(known));
memcpy(he, &known, sizeof(known));
he->data3 = HE_PREP(DATA3_BSS_COLOR, BSS_COLOR, rxv[9]) |
HE_PREP(DATA3_LDPC_XSYMSEG, LDPC_EXT_SYM, rxv[4]);
he->data4 = HE_PREP(DATA4_SU_MU_SPTL_REUSE, SR_MASK, rxv[13]);
he->data5 = HE_PREP(DATA5_PE_DISAMBIG, PE_DISAMBIG, rxv[5]) |
le16_encode_bits(ltf_size,
IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE);
if (le32_to_cpu(rxv[0]) & MT_PRXV_TXBF)
he->data5 |= HE_BITS(DATA5_TXBF);
he->data6 = HE_PREP(DATA6_TXOP, TXOP_DUR, rxv[9]) |
HE_PREP(DATA6_DOPPLER, DOPPLER, rxv[9]);
switch (mode) {
case MT_PHY_TYPE_HE_SU:
he->data1 |= HE_BITS(DATA1_FORMAT_SU) |
HE_BITS(DATA1_UL_DL_KNOWN) |
HE_BITS(DATA1_BEAM_CHANGE_KNOWN) |
HE_BITS(DATA1_BW_RU_ALLOC_KNOWN);
he->data3 |= HE_PREP(DATA3_BEAM_CHANGE, BEAM_CHNG, rxv[8]) |
HE_PREP(DATA3_UL_DL, UPLINK, rxv[5]);
break;
case MT_PHY_TYPE_HE_EXT_SU:
he->data1 |= HE_BITS(DATA1_FORMAT_EXT_SU) |
HE_BITS(DATA1_UL_DL_KNOWN) |
HE_BITS(DATA1_BW_RU_ALLOC_KNOWN);
he->data3 |= HE_PREP(DATA3_UL_DL, UPLINK, rxv[5]);
break;
case MT_PHY_TYPE_HE_MU:
he->data1 |= HE_BITS(DATA1_FORMAT_MU) |
HE_BITS(DATA1_UL_DL_KNOWN);
he->data3 |= HE_PREP(DATA3_UL_DL, UPLINK, rxv[5]);
he->data4 |= HE_PREP(DATA4_MU_STA_ID, MU_AID, rxv[8]);
mt7996_mac_decode_he_radiotap_ru(status, he, rxv);
mt7996_mac_decode_he_mu_radiotap(skb, rxv);
break;
case MT_PHY_TYPE_HE_TB:
he->data1 |= HE_BITS(DATA1_FORMAT_TRIG) |
HE_BITS(DATA1_SPTL_REUSE2_KNOWN) |
HE_BITS(DATA1_SPTL_REUSE3_KNOWN) |
HE_BITS(DATA1_SPTL_REUSE4_KNOWN);
he->data4 |= HE_PREP(DATA4_TB_SPTL_REUSE1, SR_MASK, rxv[13]) |
HE_PREP(DATA4_TB_SPTL_REUSE2, SR1_MASK, rxv[13]) |
HE_PREP(DATA4_TB_SPTL_REUSE3, SR2_MASK, rxv[13]) |
HE_PREP(DATA4_TB_SPTL_REUSE4, SR3_MASK, rxv[13]);
mt7996_mac_decode_he_radiotap_ru(status, he, rxv);
break;
default:
break;
}
}
/* The HW does not translate the mac header to 802.3 for mesh point */
static int mt7996_reverse_frag0_hdr_trans(struct sk_buff *skb, u16 hdr_gap)
{
struct mt76_rx_status *status = (struct mt76_rx_status *)skb->cb;
struct ethhdr *eth_hdr = (struct ethhdr *)(skb->data + hdr_gap);
struct mt7996_sta *msta = (struct mt7996_sta *)status->wcid;
__le32 *rxd = (__le32 *)skb->data;
struct ieee80211_sta *sta;
struct ieee80211_vif *vif;
struct ieee80211_hdr hdr;
u16 frame_control;
if (le32_get_bits(rxd[3], MT_RXD3_NORMAL_ADDR_TYPE) !=
MT_RXD3_NORMAL_U2M)
return -EINVAL;
if (!(le32_to_cpu(rxd[1]) & MT_RXD1_NORMAL_GROUP_4))
return -EINVAL;
if (!msta || !msta->vif)
return -EINVAL;
sta = container_of((void *)msta, struct ieee80211_sta, drv_priv);
vif = container_of((void *)msta->vif, struct ieee80211_vif, drv_priv);
/* store the info from RXD and ethhdr to avoid being overridden */
frame_control = le32_get_bits(rxd[8], MT_RXD8_FRAME_CONTROL);
hdr.frame_control = cpu_to_le16(frame_control);
hdr.seq_ctrl = cpu_to_le16(le32_get_bits(rxd[10], MT_RXD10_SEQ_CTRL));
hdr.duration_id = 0;
ether_addr_copy(hdr.addr1, vif->addr);
ether_addr_copy(hdr.addr2, sta->addr);
switch (frame_control & (IEEE80211_FCTL_TODS |
IEEE80211_FCTL_FROMDS)) {
case 0:
ether_addr_copy(hdr.addr3, vif->bss_conf.bssid);
break;
case IEEE80211_FCTL_FROMDS:
ether_addr_copy(hdr.addr3, eth_hdr->h_source);
break;
case IEEE80211_FCTL_TODS:
ether_addr_copy(hdr.addr3, eth_hdr->h_dest);
break;
case IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS:
ether_addr_copy(hdr.addr3, eth_hdr->h_dest);
ether_addr_copy(hdr.addr4, eth_hdr->h_source);
break;
default:
return -EINVAL;
}
skb_pull(skb, hdr_gap + sizeof(struct ethhdr) - 2);
if (eth_hdr->h_proto == cpu_to_be16(ETH_P_AARP) ||
eth_hdr->h_proto == cpu_to_be16(ETH_P_IPX))
ether_addr_copy(skb_push(skb, ETH_ALEN), bridge_tunnel_header);
else if (be16_to_cpu(eth_hdr->h_proto) >= ETH_P_802_3_MIN)
ether_addr_copy(skb_push(skb, ETH_ALEN), rfc1042_header);
else
skb_pull(skb, 2);
if (ieee80211_has_order(hdr.frame_control))
memcpy(skb_push(skb, IEEE80211_HT_CTL_LEN), &rxd[11],
IEEE80211_HT_CTL_LEN);
if (ieee80211_is_data_qos(hdr.frame_control)) {
__le16 qos_ctrl;
qos_ctrl = cpu_to_le16(le32_get_bits(rxd[10], MT_RXD10_QOS_CTL));
memcpy(skb_push(skb, IEEE80211_QOS_CTL_LEN), &qos_ctrl,
IEEE80211_QOS_CTL_LEN);
}
if (ieee80211_has_a4(hdr.frame_control))
memcpy(skb_push(skb, sizeof(hdr)), &hdr, sizeof(hdr));
else
memcpy(skb_push(skb, sizeof(hdr) - 6), &hdr, sizeof(hdr) - 6);
return 0;
}
static int
mt7996_mac_fill_rx_rate(struct mt7996_dev *dev,
struct mt76_rx_status *status,
struct ieee80211_supported_band *sband,
__le32 *rxv, u8 *mode)
{
u32 v0, v2;
u8 stbc, gi, bw, dcm, nss;
int i, idx;
bool cck = false;
v0 = le32_to_cpu(rxv[0]);
v2 = le32_to_cpu(rxv[2]);
idx = FIELD_GET(MT_PRXV_TX_RATE, v0);
i = idx;
nss = FIELD_GET(MT_PRXV_NSTS, v0) + 1;
stbc = FIELD_GET(MT_PRXV_HT_STBC, v2);
gi = FIELD_GET(MT_PRXV_HT_SHORT_GI, v2);
*mode = FIELD_GET(MT_PRXV_TX_MODE, v2);
dcm = FIELD_GET(MT_PRXV_DCM, v2);
bw = FIELD_GET(MT_PRXV_FRAME_MODE, v2);
switch (*mode) {
case MT_PHY_TYPE_CCK:
cck = true;
fallthrough;
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 (gi)
status->enc_flags |= RX_ENC_FLAG_SHORT_GI;
if (i > 31)
return -EINVAL;
break;
case MT_PHY_TYPE_VHT:
status->nss = nss;
status->encoding = RX_ENC_VHT;
if (gi)
status->enc_flags |= RX_ENC_FLAG_SHORT_GI;
if (i > 11)
return -EINVAL;
break;
case MT_PHY_TYPE_HE_MU:
case MT_PHY_TYPE_HE_SU:
case MT_PHY_TYPE_HE_EXT_SU:
case MT_PHY_TYPE_HE_TB:
status->nss = nss;
status->encoding = RX_ENC_HE;
i &= GENMASK(3, 0);
if (gi <= NL80211_RATE_INFO_HE_GI_3_2)
status->he_gi = gi;
status->he_dcm = dcm;
break;
case MT_PHY_TYPE_EHT_SU:
case MT_PHY_TYPE_EHT_TRIG:
case MT_PHY_TYPE_EHT_MU:
status->nss = nss;
status->encoding = RX_ENC_EHT;
i &= GENMASK(3, 0);
if (gi <= NL80211_RATE_INFO_EHT_GI_3_2)
status->eht.gi = gi;
break;
default:
return -EINVAL;
}
status->rate_idx = i;
switch (bw) {
case IEEE80211_STA_RX_BW_20:
break;
case IEEE80211_STA_RX_BW_40:
if (*mode & MT_PHY_TYPE_HE_EXT_SU &&
(idx & MT_PRXV_TX_ER_SU_106T)) {
status->bw = RATE_INFO_BW_HE_RU;
status->he_ru =
NL80211_RATE_INFO_HE_RU_ALLOC_106;
} else {
status->bw = RATE_INFO_BW_40;
}
break;
case IEEE80211_STA_RX_BW_80:
status->bw = RATE_INFO_BW_80;
break;
case IEEE80211_STA_RX_BW_160:
status->bw = RATE_INFO_BW_160;
break;
case IEEE80211_STA_RX_BW_320:
status->bw = RATE_INFO_BW_320;
break;
default:
return -EINVAL;
}
status->enc_flags |= RX_ENC_FLAG_STBC_MASK * stbc;
if (*mode < MT_PHY_TYPE_HE_SU && gi)
status->enc_flags |= RX_ENC_FLAG_SHORT_GI;
return 0;
}
static int
mt7996_mac_fill_rx(struct mt7996_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 mt7996_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;
u32 csum_status = *(u32 *)skb->cb;
u32 mesh_mask = MT_RXD0_MESH | MT_RXD0_MHCP;
bool is_mesh = (rxd0 & mesh_mask) == mesh_mask;
bool unicast, insert_ccmp_hdr = false;
u8 remove_pad, amsdu_info, band_idx;
u8 mode = 0, qos_ctl = 0;
bool hdr_trans;
u16 hdr_gap;
u16 seq_ctrl = 0;
__le16 fc = 0;
int idx;
memset(status, 0, sizeof(*status));
band_idx = FIELD_GET(MT_RXD1_NORMAL_BAND_IDX, rxd1);
mphy = dev->mt76.phys[band_idx];
phy = mphy->priv;
status->phy_idx = mphy->band_idx;
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 = mt7996_rx_get_wcid(dev, idx, unicast);
if (status->wcid) {
struct mt7996_sta *msta;
msta = container_of(status->wcid, struct mt7996_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_RXD3_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_RXD2_NORMAL_SEC_MODE, rxd2) != 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 += 8;
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_RXD8_FRAME_CONTROL, v0));
qos_ctl = FIELD_GET(MT_RXD10_QOS_CTL, v2);
seq_ctrl = FIELD_GET(MT_RXD10_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_RXD2_NORMAL_SEC_MODE, rxd2)) {
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 += 4;
if ((u8 *)rxd - skb->data >= skb->len)
return -EINVAL;
}
/* RXD Group 3 - P-RXV */
if (rxd1 & MT_RXD1_NORMAL_GROUP_3) {
u32 v3;
int ret;
rxv = rxd;
rxd += 4;
if ((u8 *)rxd - skb->data >= skb->len)
return -EINVAL;
v3 = le32_to_cpu(rxv[3]);
status->chains = mphy->antenna_mask;
status->chain_signal[0] = to_rssi(MT_PRXV_RCPI0, v3);
status->chain_signal[1] = to_rssi(MT_PRXV_RCPI1, v3);
status->chain_signal[2] = to_rssi(MT_PRXV_RCPI2, v3);
status->chain_signal[3] = to_rssi(MT_PRXV_RCPI3, v3);
/* RXD Group 5 - C-RXV */
if (rxd1 & MT_RXD1_NORMAL_GROUP_5) {
rxd += 24;
if ((u8 *)rxd - skb->data >= skb->len)
return -EINVAL;
}
ret = mt7996_mac_fill_rx_rate(dev, 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)) {
if (mt7996_reverse_frag0_hdr_trans(skb, hdr_gap))
return -EINVAL;
hdr_trans = false;
} else {
int pad_start = 0;
skb_pull(skb, hdr_gap);
if (!hdr_trans && status->amsdu && !(ieee80211_has_a4(fc) && is_mesh)) {
pad_start = ieee80211_get_hdrlen_from_skb(skb);
} else if (hdr_trans && (rxd2 & MT_RXD2_NORMAL_HDR_TRANS_ERROR) &&
get_unaligned_be16(skb->data + pad_start) == ETH_P_8021Q) {
/* When header translation failure is indicated,
* the hardware will insert an extra 2-byte field
* containing the data length after the protocol
* type field.
*/
pad_start = 16;
}
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)) {
u8 *qos = ieee80211_get_qos_ctl(hdr);
seq_ctrl = le16_to_cpu(hdr->seq_ctrl);
qos_ctl = *qos;
/* Mesh DA/SA/Length will be stripped after hardware
* de-amsdu, so here needs to clear amsdu present bit
* to mark it as a normal mesh frame.
*/
if (ieee80211_has_a4(fc) && is_mesh && status->amsdu)
*qos &= ~IEEE80211_QOS_CTL_A_MSDU_PRESENT;
}
} else {
status->flag |= RX_FLAG_8023;
}
if (rxv && mode >= MT_PHY_TYPE_HE_SU && !(status->flag & RX_FLAG_8023))
mt7996_mac_decode_he_radiotap(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
mt7996_mac_write_txwi_8023(struct mt7996_dev *dev, __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);
}
static void
mt7996_mac_write_txwi_80211(struct mt7996_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)
tid = MT_TX_ADDBA;
else if (ieee80211_is_mgmt(hdr->frame_control))
tid = MT_TX_NORMAL;
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);
if (!ieee80211_is_data(fc) || multicast ||
info->flags & IEEE80211_TX_CTL_USE_MINRATE)
val |= MT_TXD1_FIXED_RATE;
if (key && multicast && ieee80211_is_robust_mgmt_frame(skb) &&
key->cipher == WLAN_CIPHER_SUITE_AES_CMAC) {
val |= MT_TXD1_BIP;
txwi[3] &= ~cpu_to_le32(MT_TXD3_PROTECT_FRAME);
}
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);
txwi[2] |= cpu_to_le32(val);
txwi[3] |= cpu_to_le32(FIELD_PREP(MT_TXD3_BCM, multicast));
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 (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[3] &= ~cpu_to_le32(MT_TXD3_HW_AMSDU);
}
}
void mt7996_mac_write_txwi(struct mt7996_dev *dev, __le32 *txwi,
struct sk_buff *skb, struct mt76_wcid *wcid,
struct ieee80211_key_conf *key, int pid,
enum mt76_txq_id qid, u32 changed)
{
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
struct ieee80211_vif *vif = info->control.vif;
struct mt7996_vif *mvif = (struct mt7996_vif *)vif->drv_priv;
u8 band_idx = (info->hw_queue & MT_TX_HW_QUEUE_PHY) >> 2;
u8 p_fmt, q_idx, omac_idx = 0, wmm_idx = 0;
bool is_8023 = info->flags & IEEE80211_TX_CTL_HW_80211_ENCAP;
u16 tx_count = 15;
u32 val;
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) {
omac_idx = mvif->mt76.omac_idx;
wmm_idx = mvif->mt76.wmm_idx;
band_idx = mvif->mt76.band_idx;
}
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 (qid >= MT_TXQ_PSD) {
p_fmt = MT_TX_TYPE_CT;
q_idx = MT_LMAC_ALTX0;
} else {
p_fmt = MT_TX_TYPE_CT;
q_idx = wmm_idx * MT7996_MAX_WMM_SETS +
mt76_connac_lmac_mapping(skb_get_queue_mapping(skb));
}
val = FIELD_PREP(MT_TXD0_TX_BYTES, skb->len + MT_TXD_SIZE) |
FIELD_PREP(MT_TXD0_PKT_FMT, p_fmt) |
FIELD_PREP(MT_TXD0_Q_IDX, q_idx);
txwi[0] = cpu_to_le32(val);
val = FIELD_PREP(MT_TXD1_WLAN_IDX, wcid->idx) |
FIELD_PREP(MT_TXD1_OWN_MAC, omac_idx);
if (band_idx)
val |= FIELD_PREP(MT_TXD1_TGID, band_idx);
txwi[1] = cpu_to_le32(val);
txwi[2] = 0;
val = MT_TXD3_SW_POWER_MGMT |
FIELD_PREP(MT_TXD3_REM_TX_COUNT, tx_count);
if (key)
val |= MT_TXD3_PROTECT_FRAME;
if (info->flags & IEEE80211_TX_CTL_NO_ACK)
val |= MT_TXD3_NO_ACK;
if (wcid->amsdu)
val |= MT_TXD3_HW_AMSDU;
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);
val = MT_TXD6_DIS_MAT | MT_TXD6_DAS |
FIELD_PREP(MT_TXD6_MSDU_CNT, 1);
txwi[6] = cpu_to_le32(val);
txwi[7] = 0;
if (is_8023)
mt7996_mac_write_txwi_8023(dev, txwi, skb, wcid);
else
mt7996_mac_write_txwi_80211(dev, txwi, skb, key);
if (txwi[1] & cpu_to_le32(MT_TXD1_FIXED_RATE)) {
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
bool mcast = ieee80211_is_data(hdr->frame_control) &&
is_multicast_ether_addr(hdr->addr1);
u8 idx = mvif->basic_rates_idx;
if (mcast && mvif->mcast_rates_idx)
idx = mvif->mcast_rates_idx;
else if (beacon && mvif->beacon_rates_idx)
idx = mvif->beacon_rates_idx;
txwi[6] |= cpu_to_le32(FIELD_PREP(MT_TXD6_TX_RATE, idx));
txwi[3] |= cpu_to_le32(MT_TXD3_BA_DISABLE);
}
}
int mt7996_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 mt7996_dev *dev = container_of(mdev, struct mt7996_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_txp_common *txp;
struct mt76_txwi_cache *t;
int id, i, pid, nbuf = tx_info->nbuf - 1;
bool is_8023 = info->flags & IEEE80211_TX_CTL_HW_80211_ENCAP;
u8 *txwi = (u8 *)txwi_ptr;
if (unlikely(tx_info->skb->len <= ETH_HLEN))
return -EINVAL;
if (!wcid)
wcid = &dev->mt76.global_wcid;
if (sta) {
struct mt7996_sta *msta = (struct mt7996_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);
mt7996_mac_write_txwi(dev, txwi_ptr, tx_info->skb, wcid, key,
pid, qid, 0);
txp = (struct mt76_connac_txp_common *)(txwi + MT_TXD_SIZE);
for (i = 0; i < nbuf; i++) {
txp->fw.buf[i] = cpu_to_le32(tx_info->buf[i + 1].addr);
txp->fw.len[i] = cpu_to_le16(tx_info->buf[i + 1].len);
}
txp->fw.nbuf = nbuf;
txp->fw.flags =
cpu_to_le16(MT_CT_INFO_FROM_HOST | MT_CT_INFO_APPLY_TXD);
if (!key)
txp->fw.flags |= cpu_to_le16(MT_CT_INFO_NONE_CIPHER_FRAME);
if (!is_8023 && ieee80211_is_mgmt(hdr->frame_control))
txp->fw.flags |= cpu_to_le16(MT_CT_INFO_MGMT_FRAME);
if (vif) {
struct mt7996_vif *mvif = (struct mt7996_vif *)vif->drv_priv;
txp->fw.bss_idx = mvif->mt76.idx;
}
txp->fw.token = cpu_to_le16(id);
if (test_bit(MT_WCID_FLAG_4ADDR, &wcid->flags))
txp->fw.rept_wds_wcid = cpu_to_le16(wcid->idx);
else
txp->fw.rept_wds_wcid = cpu_to_le16(0xfff);
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;
}
static void
mt7996_tx_check_aggr(struct ieee80211_sta *sta, __le32 *txwi)
{
struct mt7996_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 mt7996_sta *)sta->drv_priv;
if (!test_and_set_bit(tid, &msta->ampdu_state))
ieee80211_start_tx_ba_session(sta, tid, 0);
}
static void
mt7996_txwi_free(struct mt7996_dev *dev, struct mt76_txwi_cache *t,
struct ieee80211_sta *sta, struct list_head *free_list)
{
struct mt76_dev *mdev = &dev->mt76;
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;
if (likely(t->skb->protocol != cpu_to_be16(ETH_P_PAE)))
mt7996_tx_check_aggr(sta, txwi);
} else {
wcid_idx = le32_get_bits(txwi[1], MT_TXD1_WLAN_IDX);
}
__mt76_tx_complete_skb(mdev, wcid_idx, t->skb, free_list);
out:
t->skb = NULL;
mt76_put_txwi(mdev, t);
}
static void
mt7996_mac_tx_free(struct mt7996_dev *dev, void *data, int len)
{
__le32 *tx_free = (__le32 *)data, *cur_info;
struct mt76_dev *mdev = &dev->mt76;
struct mt76_phy *phy2 = mdev->phys[MT_BAND1];
struct mt76_phy *phy3 = mdev->phys[MT_BAND2];
struct mt76_txwi_cache *txwi;
struct ieee80211_sta *sta = NULL;
LIST_HEAD(free_list);
struct sk_buff *skb, *tmp;
void *end = data + len;
bool wake = false;
u16 total, count = 0;
/* 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 (phy2) {
mt76_queue_tx_cleanup(dev, phy2->q_tx[MT_TXQ_PSD], false);
mt76_queue_tx_cleanup(dev, phy2->q_tx[MT_TXQ_BE], false);
}
if (phy3) {
mt76_queue_tx_cleanup(dev, phy3->q_tx[MT_TXQ_PSD], false);
mt76_queue_tx_cleanup(dev, phy3->q_tx[MT_TXQ_BE], false);
}
if (WARN_ON_ONCE(le32_get_bits(tx_free[1], MT_TXFREE1_VER) < 4))
return;
total = le32_get_bits(tx_free[0], MT_TXFREE0_MSDU_CNT);
for (cur_info = &tx_free[2]; count < total; cur_info++) {
u32 msdu, info;
u8 i;
if (WARN_ON_ONCE((void *)cur_info >= end))
return;
/* 1'b1: new wcid pair.
* 1'b0: msdu_id with the same 'wcid pair' as above.
*/
info = le32_to_cpu(*cur_info);
if (info & MT_TXFREE_INFO_PAIR) {
struct mt7996_sta *msta;
struct mt76_wcid *wcid;
u16 idx;
idx = FIELD_GET(MT_TXFREE_INFO_WLAN_ID, info);
wcid = rcu_dereference(dev->mt76.wcid[idx]);
sta = wcid_to_sta(wcid);
if (!sta)
continue;
msta = container_of(wcid, struct mt7996_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 (info & MT_TXFREE_INFO_HEADER)
continue;
for (i = 0; i < 2; i++) {
msdu = (info >> (15 * i)) & MT_TXFREE_INFO_MSDU_ID;
if (msdu == MT_TXFREE_INFO_MSDU_ID)
continue;
count++;
txwi = mt76_token_release(mdev, msdu, &wake);
if (!txwi)
continue;
mt7996_txwi_free(dev, txwi, sta, &free_list);
}
}
mt7996_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 bool
mt7996_mac_add_txs_skb(struct mt7996_dev *dev, struct mt76_wcid *wcid, int pid,
__le32 *txs_data, struct mt76_sta_stats *stats)
{
struct ieee80211_supported_band *sband;
struct mt76_dev *mdev = &dev->mt76;
struct mt76_phy *mphy;
struct ieee80211_tx_info *info;
struct sk_buff_head list;
struct rate_info rate = {};
struct sk_buff *skb;
bool cck = false;
u32 txrate, txs, mode, stbc;
mt76_tx_status_lock(mdev, &list);
skb = mt76_tx_status_skb_get(mdev, wcid, pid, &list);
if (!skb)
goto out_no_skb;
txs = le32_to_cpu(txs_data[0]);
info = IEEE80211_SKB_CB(skb);
if (!(txs & MT_TXS0_ACK_ERROR_MASK))
info->flags |= IEEE80211_TX_STAT_ACK;
info->status.ampdu_len = 1;
info->status.ampdu_ack_len = !!(info->flags &
IEEE80211_TX_STAT_ACK);
info->status.rates[0].idx = -1;
txrate = FIELD_GET(MT_TXS0_TX_RATE, txs);
rate.mcs = FIELD_GET(MT_TX_RATE_IDX, txrate);
rate.nss = FIELD_GET(MT_TX_RATE_NSS, txrate) + 1;
stbc = le32_get_bits(txs_data[3], MT_TXS3_RATE_STBC);
if (stbc && rate.nss > 1)
rate.nss >>= 1;
if (rate.nss - 1 < ARRAY_SIZE(stats->tx_nss))
stats->tx_nss[rate.nss - 1]++;
if (rate.mcs < ARRAY_SIZE(stats->tx_mcs))
stats->tx_mcs[rate.mcs]++;
mode = FIELD_GET(MT_TX_RATE_MODE, txrate);
switch (mode) {
case MT_PHY_TYPE_CCK:
cck = true;
fallthrough;
case MT_PHY_TYPE_OFDM:
mphy = mt76_dev_phy(mdev, wcid->phy_idx);
if (mphy->chandef.chan->band == NL80211_BAND_5GHZ)
sband = &mphy->sband_5g.sband;
else if (mphy->chandef.chan->band == NL80211_BAND_6GHZ)
sband = &mphy->sband_6g.sband;
else
sband = &mphy->sband_2g.sband;
rate.mcs = mt76_get_rate(mphy->dev, sband, rate.mcs, cck);
rate.legacy = sband->bitrates[rate.mcs].bitrate;
break;
case MT_PHY_TYPE_HT:
case MT_PHY_TYPE_HT_GF:
if (rate.mcs > 31)
goto out;
rate.flags = RATE_INFO_FLAGS_MCS;
if (wcid->rate.flags & RATE_INFO_FLAGS_SHORT_GI)
rate.flags |= RATE_INFO_FLAGS_SHORT_GI;
break;
case MT_PHY_TYPE_VHT:
if (rate.mcs > 9)
goto out;
rate.flags = RATE_INFO_FLAGS_VHT_MCS;
break;
case MT_PHY_TYPE_HE_SU:
case MT_PHY_TYPE_HE_EXT_SU:
case MT_PHY_TYPE_HE_TB:
case MT_PHY_TYPE_HE_MU:
if (rate.mcs > 11)
goto out;
rate.he_gi = wcid->rate.he_gi;
rate.he_dcm = FIELD_GET(MT_TX_RATE_DCM, txrate);
rate.flags = RATE_INFO_FLAGS_HE_MCS;
break;
case MT_PHY_TYPE_EHT_SU:
case MT_PHY_TYPE_EHT_TRIG:
case MT_PHY_TYPE_EHT_MU:
if (rate.mcs > 13)
goto out;
rate.eht_gi = wcid->rate.eht_gi;
rate.flags = RATE_INFO_FLAGS_EHT_MCS;
break;
default:
goto out;
}
stats->tx_mode[mode]++;
switch (FIELD_GET(MT_TXS0_BW, txs)) {
case IEEE80211_STA_RX_BW_320:
rate.bw = RATE_INFO_BW_320;
stats->tx_bw[4]++;
break;
case IEEE80211_STA_RX_BW_160:
rate.bw = RATE_INFO_BW_160;
stats->tx_bw[3]++;
break;
case IEEE80211_STA_RX_BW_80:
rate.bw = RATE_INFO_BW_80;
stats->tx_bw[2]++;
break;
case IEEE80211_STA_RX_BW_40:
rate.bw = RATE_INFO_BW_40;
stats->tx_bw[1]++;
break;
default:
rate.bw = RATE_INFO_BW_20;
stats->tx_bw[0]++;
break;
}
wcid->rate = rate;
out:
mt76_tx_status_skb_done(mdev, skb, &list);
out_no_skb:
mt76_tx_status_unlock(mdev, &list);
return !!skb;
}
static void mt7996_mac_add_txs(struct mt7996_dev *dev, void *data)
{
struct mt7996_sta *msta = NULL;
struct mt76_wcid *wcid;
__le32 *txs_data = data;
u16 wcidx;
u8 pid;
if (le32_get_bits(txs_data[0], MT_TXS0_TXS_FORMAT) > 1)
return;
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_FIRST)
return;
if (wcidx >= mt7996_wtbl_size(dev))
return;
rcu_read_lock();
wcid = rcu_dereference(dev->mt76.wcid[wcidx]);
if (!wcid)
goto out;
msta = container_of(wcid, struct mt7996_sta, wcid);
mt7996_mac_add_txs_skb(dev, wcid, pid, txs_data, &msta->stats);
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 mt7996_rx_check(struct mt76_dev *mdev, void *data, int len)
{
struct mt7996_dev *dev = container_of(mdev, struct mt7996_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);
if (type != PKT_TYPE_NORMAL) {
u32 sw_type = le32_get_bits(rxd[0], MT_RXD0_SW_PKT_TYPE_MASK);
if (unlikely((sw_type & MT_RXD0_SW_PKT_TYPE_MAP) ==
MT_RXD0_SW_PKT_TYPE_FRAME))
return true;
}
switch (type) {
case PKT_TYPE_TXRX_NOTIFY:
mt7996_mac_tx_free(dev, data, len);
return false;
case PKT_TYPE_TXS:
for (rxd += 4; rxd + 8 <= end; rxd += 8)
mt7996_mac_add_txs(dev, rxd);
return false;
case PKT_TYPE_RX_FW_MONITOR:
mt7996_debugfs_rx_fw_monitor(dev, data, len);
return false;
default:
return true;
}
}
void mt7996_queue_rx_skb(struct mt76_dev *mdev, enum mt76_rxq_id q,
struct sk_buff *skb, u32 *info)
{
struct mt7996_dev *dev = container_of(mdev, struct mt7996_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);
if (type != PKT_TYPE_NORMAL) {
u32 sw_type = le32_get_bits(rxd[0], MT_RXD0_SW_PKT_TYPE_MASK);
if (unlikely((sw_type & MT_RXD0_SW_PKT_TYPE_MAP) ==
MT_RXD0_SW_PKT_TYPE_FRAME))
type = PKT_TYPE_NORMAL;
}
switch (type) {
case PKT_TYPE_TXRX_NOTIFY:
mt7996_mac_tx_free(dev, skb->data, skb->len);
napi_consume_skb(skb, 1);
break;
case PKT_TYPE_RX_EVENT:
mt7996_mcu_rx_event(dev, skb);
break;
case PKT_TYPE_TXS:
for (rxd += 4; rxd + 8 <= end; rxd += 8)
mt7996_mac_add_txs(dev, rxd);
dev_kfree_skb(skb);
break;
case PKT_TYPE_RX_FW_MONITOR:
mt7996_debugfs_rx_fw_monitor(dev, skb->data, skb->len);
dev_kfree_skb(skb);
break;
case PKT_TYPE_NORMAL:
if (!mt7996_mac_fill_rx(dev, skb)) {
mt76_rx(&dev->mt76, q, skb);
return;
}
fallthrough;
default:
dev_kfree_skb(skb);
break;
}
}
void mt7996_mac_cca_stats_reset(struct mt7996_phy *phy)
{
struct mt7996_dev *dev = phy->dev;
u32 reg = MT_WF_PHYRX_BAND_RX_CTRL1(phy->mt76->band_idx);
mt76_clear(dev, reg, MT_WF_PHYRX_BAND_RX_CTRL1_STSCNT_EN);
mt76_set(dev, reg, BIT(11) | BIT(9));
}
void mt7996_mac_reset_counters(struct mt7996_phy *phy)
{
struct mt7996_dev *dev = phy->dev;
u8 band_idx = phy->mt76->band_idx;
int i;
for (i = 0; i < 16; i++)
mt76_rr(dev, MT_TX_AGG_CNT(band_idx, i));
phy->mt76->survey_time = ktime_get_boottime();
memset(phy->mt76->aggr_stats, 0, sizeof(phy->mt76->aggr_stats));
/* reset airtime counters */
mt76_set(dev, MT_WF_RMAC_MIB_AIRTIME0(band_idx),
MT_WF_RMAC_MIB_RXTIME_CLR);
mt7996_mcu_get_chan_mib_info(phy, true);
}
void mt7996_mac_set_timing(struct mt7996_phy *phy)
{
s16 coverage_class = phy->coverage_class;
struct mt7996_dev *dev = phy->dev;
struct mt7996_phy *phy2 = mt7996_phy2(dev);
struct mt7996_phy *phy3 = mt7996_phy3(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);
u8 band_idx = phy->mt76->band_idx;
int offset;
bool a_band = !(phy->mt76->chandef.chan->band == NL80211_BAND_2GHZ);
if (!test_bit(MT76_STATE_RUNNING, &phy->mt76->state))
return;
if (phy2)
coverage_class = max_t(s16, dev->phy.coverage_class,
phy2->coverage_class);
if (phy3)
coverage_class = max_t(s16, coverage_class,
phy3->coverage_class);
mt76_set(dev, MT_ARB_SCR(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);
mt76_wr(dev, MT_TMAC_CDTR(band_idx), cck + reg_offset);
mt76_wr(dev, MT_TMAC_ODTR(band_idx), ofdm + reg_offset);
mt76_wr(dev, MT_TMAC_ICR0(band_idx),
FIELD_PREP(MT_IFS_EIFS_OFDM, a_band ? 84 : 78) |
FIELD_PREP(MT_IFS_RIFS, 2) |
FIELD_PREP(MT_IFS_SIFS, 10) |
FIELD_PREP(MT_IFS_SLOT, phy->slottime));
if (!a_band)
mt76_wr(dev, MT_TMAC_ICR1(band_idx),
FIELD_PREP(MT_IFS_EIFS_CCK, 314));
if (phy->slottime < 20 || a_band)
val = MT7996_CFEND_RATE_DEFAULT;
else
val = MT7996_CFEND_RATE_11B;
mt76_rmw_field(dev, MT_RATE_HRCR0(band_idx), MT_RATE_HRCR0_CFEND_RATE, val);
mt76_clear(dev, MT_ARB_SCR(band_idx),
MT_ARB_SCR_TX_DISABLE | MT_ARB_SCR_RX_DISABLE);
}
void mt7996_mac_enable_nf(struct mt7996_dev *dev, u8 band)
{
mt76_set(dev, MT_WF_PHYRX_CSD_BAND_RXTD12(band),
MT_WF_PHYRX_CSD_BAND_RXTD12_IRPI_SW_CLR_ONLY |
MT_WF_PHYRX_CSD_BAND_RXTD12_IRPI_SW_CLR);
mt76_set(dev, MT_WF_PHYRX_BAND_RX_CTRL1(band),
FIELD_PREP(MT_WF_PHYRX_BAND_RX_CTRL1_IPI_EN, 0x5));
}
static u8
mt7996_phy_get_nf(struct mt7996_phy *phy, u8 band_idx)
{
static const u8 nf_power[] = { 92, 89, 86, 83, 80, 75, 70, 65, 60, 55, 52 };
struct mt7996_dev *dev = phy->dev;
u32 val, sum = 0, n = 0;
int ant, i;
for (ant = 0; ant < hweight8(phy->mt76->antenna_mask); ant++) {
u32 reg = MT_WF_PHYRX_CSD_IRPI(band_idx, ant);
for (i = 0; i < ARRAY_SIZE(nf_power); i++, reg += 4) {
val = mt76_rr(dev, reg);
sum += val * nf_power[i];
n += val;
}
}
return n ? sum / n : 0;
}
void mt7996_update_channel(struct mt76_phy *mphy)
{
struct mt7996_phy *phy = (struct mt7996_phy *)mphy->priv;
struct mt76_channel_state *state = mphy->chan_state;
int nf;
mt7996_mcu_get_chan_mib_info(phy, false);
nf = mt7996_phy_get_nf(phy, mphy->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
mt7996_wait_reset_state(struct mt7996_dev *dev, u32 state)
{
bool ret;
ret = wait_event_timeout(dev->reset_wait,
(READ_ONCE(dev->recovery.state) & state),
MT7996_RESET_TIMEOUT);
WARN(!ret, "Timeout waiting for MCU reset state %x\n", state);
return ret;
}
static void
mt7996_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:
mt7996_mcu_add_beacon(hw, vif, vif->bss_conf.enable_beacon);
break;
default:
break;
}
}
static void
mt7996_update_beacons(struct mt7996_dev *dev)
{
struct mt76_phy *phy2, *phy3;
ieee80211_iterate_active_interfaces(dev->mt76.hw,
IEEE80211_IFACE_ITER_RESUME_ALL,
mt7996_update_vif_beacon, dev->mt76.hw);
phy2 = dev->mt76.phys[MT_BAND1];
if (!phy2)
return;
ieee80211_iterate_active_interfaces(phy2->hw,
IEEE80211_IFACE_ITER_RESUME_ALL,
mt7996_update_vif_beacon, phy2->hw);
phy3 = dev->mt76.phys[MT_BAND2];
if (!phy3)
return;
ieee80211_iterate_active_interfaces(phy3->hw,
IEEE80211_IFACE_ITER_RESUME_ALL,
mt7996_update_vif_beacon, phy3->hw);
}
void mt7996_tx_token_put(struct mt7996_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) {
mt7996_txwi_free(dev, txwi, NULL, NULL);
dev->mt76.token_count--;
}
spin_unlock_bh(&dev->mt76.token_lock);
idr_destroy(&dev->mt76.token);
}
static int
mt7996_mac_restart(struct mt7996_dev *dev)
{
struct mt7996_phy *phy2, *phy3;
struct mt76_dev *mdev = &dev->mt76;
int i, ret;
phy2 = mt7996_phy2(dev);
phy3 = mt7996_phy3(dev);
if (dev->hif2) {
mt76_wr(dev, MT_INT1_MASK_CSR, 0x0);
mt76_wr(dev, MT_INT1_SOURCE_CSR, ~0);
}
if (dev_is_pci(mdev->dev)) {
mt76_wr(dev, MT_PCIE_MAC_INT_ENABLE, 0x0);
if (dev->hif2)
mt76_wr(dev, MT_PCIE1_MAC_INT_ENABLE, 0x0);
}
set_bit(MT76_RESET, &dev->mphy.state);
set_bit(MT76_MCU_RESET, &dev->mphy.state);
wake_up(&dev->mt76.mcu.wait);
if (phy2) {
set_bit(MT76_RESET, &phy2->mt76->state);
set_bit(MT76_MCU_RESET, &phy2->mt76->state);
}
if (phy3) {
set_bit(MT76_RESET, &phy3->mt76->state);
set_bit(MT76_MCU_RESET, &phy3->mt76->state);
}
/* lock/unlock all queues to ensure that no tx is pending */
mt76_txq_schedule_all(&dev->mphy);
if (phy2)
mt76_txq_schedule_all(phy2->mt76);
if (phy3)
mt76_txq_schedule_all(phy3->mt76);
/* disable all tx/rx napi */
mt76_worker_disable(&dev->mt76.tx_worker);
mt76_for_each_q_rx(mdev, i) {
if (mdev->q_rx[i].ndesc)
napi_disable(&dev->mt76.napi[i]);
}
napi_disable(&dev->mt76.tx_napi);
/* token reinit */
mt7996_tx_token_put(dev);
idr_init(&dev->mt76.token);
mt7996_dma_reset(dev, true);
local_bh_disable();
mt76_for_each_q_rx(mdev, i) {
if (mdev->q_rx[i].ndesc) {
napi_enable(&dev->mt76.napi[i]);
napi_schedule(&dev->mt76.napi[i]);
}
}
local_bh_enable();
clear_bit(MT76_MCU_RESET, &dev->mphy.state);
clear_bit(MT76_STATE_MCU_RUNNING, &dev->mphy.state);
mt76_wr(dev, MT_INT_MASK_CSR, dev->mt76.mmio.irqmask);
mt76_wr(dev, MT_INT_SOURCE_CSR, ~0);
if (dev->hif2) {
mt76_wr(dev, MT_INT1_MASK_CSR, dev->mt76.mmio.irqmask);
mt76_wr(dev, MT_INT1_SOURCE_CSR, ~0);
}
if (dev_is_pci(mdev->dev)) {
mt76_wr(dev, MT_PCIE_MAC_INT_ENABLE, 0xff);
if (dev->hif2)
mt76_wr(dev, MT_PCIE1_MAC_INT_ENABLE, 0xff);
}
/* load firmware */
ret = mt7996_mcu_init_firmware(dev);
if (ret)
goto out;
/* set the necessary init items */
ret = mt7996_mcu_set_eeprom(dev);
if (ret)
goto out;
mt7996_mac_init(dev);
mt7996_init_txpower(dev, &dev->mphy.sband_2g.sband);
mt7996_init_txpower(dev, &dev->mphy.sband_5g.sband);
mt7996_init_txpower(dev, &dev->mphy.sband_6g.sband);
ret = mt7996_txbf_init(dev);
if (test_bit(MT76_STATE_RUNNING, &dev->mphy.state)) {
ret = mt7996_run(dev->mphy.hw);
if (ret)
goto out;
}
if (phy2 && test_bit(MT76_STATE_RUNNING, &phy2->mt76->state)) {
ret = mt7996_run(phy2->mt76->hw);
if (ret)
goto out;
}
if (phy3 && test_bit(MT76_STATE_RUNNING, &phy3->mt76->state)) {
ret = mt7996_run(phy3->mt76->hw);
if (ret)
goto out;
}
out:
/* reset done */
clear_bit(MT76_RESET, &dev->mphy.state);
if (phy2)
clear_bit(MT76_RESET, &phy2->mt76->state);
if (phy3)
clear_bit(MT76_RESET, &phy3->mt76->state);
local_bh_disable();
napi_enable(&dev->mt76.tx_napi);
napi_schedule(&dev->mt76.tx_napi);
local_bh_enable();
mt76_worker_enable(&dev->mt76.tx_worker);
return ret;
}
static void
mt7996_mac_full_reset(struct mt7996_dev *dev)
{
struct mt7996_phy *phy2, *phy3;
int i;
phy2 = mt7996_phy2(dev);
phy3 = mt7996_phy3(dev);
dev->recovery.hw_full_reset = true;
wake_up(&dev->mt76.mcu.wait);
ieee80211_stop_queues(mt76_hw(dev));
if (phy2)
ieee80211_stop_queues(phy2->mt76->hw);
if (phy3)
ieee80211_stop_queues(phy3->mt76->hw);
cancel_delayed_work_sync(&dev->mphy.mac_work);
if (phy2)
cancel_delayed_work_sync(&phy2->mt76->mac_work);
if (phy3)
cancel_delayed_work_sync(&phy3->mt76->mac_work);
mutex_lock(&dev->mt76.mutex);
for (i = 0; i < 10; i++) {
if (!mt7996_mac_restart(dev))
break;
}
mutex_unlock(&dev->mt76.mutex);
if (i == 10)
dev_err(dev->mt76.dev, "chip full reset failed\n");
ieee80211_restart_hw(mt76_hw(dev));
if (phy2)
ieee80211_restart_hw(phy2->mt76->hw);
if (phy3)
ieee80211_restart_hw(phy3->mt76->hw);
ieee80211_wake_queues(mt76_hw(dev));
if (phy2)
ieee80211_wake_queues(phy2->mt76->hw);
if (phy3)
ieee80211_wake_queues(phy3->mt76->hw);
dev->recovery.hw_full_reset = false;
ieee80211_queue_delayed_work(mt76_hw(dev),
&dev->mphy.mac_work,
MT7996_WATCHDOG_TIME);
if (phy2)
ieee80211_queue_delayed_work(phy2->mt76->hw,
&phy2->mt76->mac_work,
MT7996_WATCHDOG_TIME);
if (phy3)
ieee80211_queue_delayed_work(phy3->mt76->hw,
&phy3->mt76->mac_work,
MT7996_WATCHDOG_TIME);
}
void mt7996_mac_reset_work(struct work_struct *work)
{
struct mt7996_phy *phy2, *phy3;
struct mt7996_dev *dev;
int i;
dev = container_of(work, struct mt7996_dev, reset_work);
phy2 = mt7996_phy2(dev);
phy3 = mt7996_phy3(dev);
/* chip full reset */
if (dev->recovery.restart) {
/* disable WA/WM WDT */
mt76_clear(dev, MT_WFDMA0_MCU_HOST_INT_ENA,
MT_MCU_CMD_WDT_MASK);
if (READ_ONCE(dev->recovery.state) & MT_MCU_CMD_WA_WDT)
dev->recovery.wa_reset_count++;
else
dev->recovery.wm_reset_count++;
mt7996_mac_full_reset(dev);
/* enable mcu irq */
mt7996_irq_enable(dev, MT_INT_MCU_CMD);
mt7996_irq_disable(dev, 0);
/* enable WA/WM WDT */
mt76_set(dev, MT_WFDMA0_MCU_HOST_INT_ENA, MT_MCU_CMD_WDT_MASK);
dev->recovery.state = MT_MCU_CMD_NORMAL_STATE;
dev->recovery.restart = false;
return;
}
if (!(READ_ONCE(dev->recovery.state) & MT_MCU_CMD_STOP_DMA))
return;
dev_info(dev->mt76.dev,"\n%s L1 SER recovery start.",
wiphy_name(dev->mt76.hw->wiphy));
ieee80211_stop_queues(mt76_hw(dev));
if (phy2)
ieee80211_stop_queues(phy2->mt76->hw);
if (phy3)
ieee80211_stop_queues(phy3->mt76->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);
}
if (phy3) {
set_bit(MT76_RESET, &phy3->mt76->state);
cancel_delayed_work_sync(&phy3->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 (mt7996_wait_reset_state(dev, MT_MCU_CMD_RESET_DONE)) {
mt7996_dma_reset(dev, false);
mt7996_tx_token_put(dev);
idr_init(&dev->mt76.token);
mt76_wr(dev, MT_MCU_INT_EVENT, MT_MCU_INT_EVENT_DMA_INIT);
mt7996_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);
if (phy3)
clear_bit(MT76_RESET, &phy3->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->mt76.irq_tasklet);
mt76_wr(dev, MT_MCU_INT_EVENT, MT_MCU_INT_EVENT_RESET_DONE);
mt7996_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 (phy2)
ieee80211_wake_queues(phy2->mt76->hw);
if (phy3)
ieee80211_wake_queues(phy3->mt76->hw);
mutex_unlock(&dev->mt76.mutex);
mt7996_update_beacons(dev);
ieee80211_queue_delayed_work(mt76_hw(dev), &dev->mphy.mac_work,
MT7996_WATCHDOG_TIME);
if (phy2)
ieee80211_queue_delayed_work(phy2->mt76->hw,
&phy2->mt76->mac_work,
MT7996_WATCHDOG_TIME);
if (phy3)
ieee80211_queue_delayed_work(phy3->mt76->hw,
&phy3->mt76->mac_work,
MT7996_WATCHDOG_TIME);
dev_info(dev->mt76.dev,"\n%s L1 SER recovery completed.",
wiphy_name(dev->mt76.hw->wiphy));
}
/* firmware coredump */
void mt7996_mac_dump_work(struct work_struct *work)
{
const struct mt7996_mem_region *mem_region;
struct mt7996_crash_data *crash_data;
struct mt7996_dev *dev;
struct mt7996_mem_hdr *hdr;
size_t buf_len;
int i;
u32 num;
u8 *buf;
dev = container_of(work, struct mt7996_dev, dump_work);
mutex_lock(&dev->dump_mutex);
crash_data = mt7996_coredump_new(dev);
if (!crash_data) {
mutex_unlock(&dev->dump_mutex);
goto skip_coredump;
}
mem_region = mt7996_coredump_get_mem_layout(dev, &num);
if (!mem_region || !crash_data->memdump_buf_len) {
mutex_unlock(&dev->dump_mutex);
goto skip_memdump;
}
buf = crash_data->memdump_buf;
buf_len = crash_data->memdump_buf_len;
/* dumping memory content... */
memset(buf, 0, buf_len);
for (i = 0; i < num; i++) {
if (mem_region->len > buf_len) {
dev_warn(dev->mt76.dev, "%s len %zu is too large\n",
mem_region->name, mem_region->len);
break;
}
/* reserve space for the header */
hdr = (void *)buf;
buf += sizeof(*hdr);
buf_len -= sizeof(*hdr);
mt7996_memcpy_fromio(dev, buf, mem_region->start,
mem_region->len);
hdr->start = mem_region->start;
hdr->len = mem_region->len;
if (!mem_region->len)
/* note: the header remains, just with zero length */
break;
buf += mem_region->len;
buf_len -= mem_region->len;
mem_region++;
}
mutex_unlock(&dev->dump_mutex);
skip_memdump:
mt7996_coredump_submit(dev);
skip_coredump:
queue_work(dev->mt76.wq, &dev->reset_work);
}
void mt7996_reset(struct mt7996_dev *dev)
{
if (!dev->recovery.hw_init_done)
return;
if (dev->recovery.hw_full_reset)
return;
/* wm/wa exception: do full recovery */
if (READ_ONCE(dev->recovery.state) & MT_MCU_CMD_WDT_MASK) {
dev->recovery.restart = true;
dev_info(dev->mt76.dev,
"%s indicated firmware crash, attempting recovery\n",
wiphy_name(dev->mt76.hw->wiphy));
mt7996_irq_disable(dev, MT_INT_MCU_CMD);
queue_work(dev->mt76.wq, &dev->dump_work);
return;
}
queue_work(dev->mt76.wq, &dev->reset_work);
wake_up(&dev->reset_wait);
}
void mt7996_mac_update_stats(struct mt7996_phy *phy)
{
struct mt7996_dev *dev = phy->dev;
struct mib_stats *mib = &phy->mib;
u8 band_idx = phy->mt76->band_idx;
u32 cnt;
int i;
cnt = mt76_rr(dev, MT_MIB_RSCR1(band_idx));
mib->fcs_err_cnt += cnt;
cnt = mt76_rr(dev, MT_MIB_RSCR33(band_idx));
mib->rx_fifo_full_cnt += cnt;
cnt = mt76_rr(dev, MT_MIB_RSCR31(band_idx));
mib->rx_mpdu_cnt += cnt;
cnt = mt76_rr(dev, MT_MIB_SDR6(band_idx));
mib->channel_idle_cnt += FIELD_GET(MT_MIB_SDR6_CHANNEL_IDL_CNT_MASK, cnt);
cnt = mt76_rr(dev, MT_MIB_RVSR0(band_idx));
mib->rx_vector_mismatch_cnt += cnt;
cnt = mt76_rr(dev, MT_MIB_RSCR35(band_idx));
mib->rx_delimiter_fail_cnt += cnt;
cnt = mt76_rr(dev, MT_MIB_RSCR36(band_idx));
mib->rx_len_mismatch_cnt += cnt;
cnt = mt76_rr(dev, MT_MIB_TSCR0(band_idx));
mib->tx_ampdu_cnt += cnt;
cnt = mt76_rr(dev, MT_MIB_TSCR2(band_idx));
mib->tx_stop_q_empty_cnt += cnt;
cnt = mt76_rr(dev, MT_MIB_TSCR3(band_idx));
mib->tx_mpdu_attempts_cnt += cnt;
cnt = mt76_rr(dev, MT_MIB_TSCR4(band_idx));
mib->tx_mpdu_success_cnt += cnt;
cnt = mt76_rr(dev, MT_MIB_RSCR27(band_idx));
mib->rx_ampdu_cnt += cnt;
cnt = mt76_rr(dev, MT_MIB_RSCR28(band_idx));
mib->rx_ampdu_bytes_cnt += cnt;
cnt = mt76_rr(dev, MT_MIB_RSCR29(band_idx));
mib->rx_ampdu_valid_subframe_cnt += cnt;
cnt = mt76_rr(dev, MT_MIB_RSCR30(band_idx));
mib->rx_ampdu_valid_subframe_bytes_cnt += cnt;
cnt = mt76_rr(dev, MT_MIB_SDR27(band_idx));
mib->tx_rwp_fail_cnt += FIELD_GET(MT_MIB_SDR27_TX_RWP_FAIL_CNT, cnt);
cnt = mt76_rr(dev, MT_MIB_SDR28(band_idx));
mib->tx_rwp_need_cnt += FIELD_GET(MT_MIB_SDR28_TX_RWP_NEED_CNT, cnt);
cnt = mt76_rr(dev, MT_UMIB_RPDCR(band_idx));
mib->rx_pfdrop_cnt += cnt;
cnt = mt76_rr(dev, MT_MIB_RVSR1(band_idx));
mib->rx_vec_queue_overflow_drop_cnt += cnt;
cnt = mt76_rr(dev, MT_MIB_TSCR1(band_idx));
mib->rx_ba_cnt += cnt;
cnt = mt76_rr(dev, MT_MIB_BSCR0(band_idx));
mib->tx_bf_ebf_ppdu_cnt += cnt;
cnt = mt76_rr(dev, MT_MIB_BSCR1(band_idx));
mib->tx_bf_ibf_ppdu_cnt += cnt;
cnt = mt76_rr(dev, MT_MIB_BSCR2(band_idx));
mib->tx_mu_bf_cnt += cnt;
cnt = mt76_rr(dev, MT_MIB_TSCR5(band_idx));
mib->tx_mu_mpdu_cnt += cnt;
cnt = mt76_rr(dev, MT_MIB_TSCR6(band_idx));
mib->tx_mu_acked_mpdu_cnt += cnt;
cnt = mt76_rr(dev, MT_MIB_TSCR7(band_idx));
mib->tx_su_acked_mpdu_cnt += cnt;
cnt = mt76_rr(dev, MT_MIB_BSCR3(band_idx));
mib->tx_bf_rx_fb_ht_cnt += cnt;
mib->tx_bf_rx_fb_all_cnt += cnt;
cnt = mt76_rr(dev, MT_MIB_BSCR4(band_idx));
mib->tx_bf_rx_fb_vht_cnt += cnt;
mib->tx_bf_rx_fb_all_cnt += cnt;
cnt = mt76_rr(dev, MT_MIB_BSCR5(band_idx));
mib->tx_bf_rx_fb_he_cnt += cnt;
mib->tx_bf_rx_fb_all_cnt += cnt;
cnt = mt76_rr(dev, MT_MIB_BSCR6(band_idx));
mib->tx_bf_rx_fb_eht_cnt += cnt;
mib->tx_bf_rx_fb_all_cnt += cnt;
cnt = mt76_rr(dev, MT_ETBF_RX_FB_CONT(band_idx));
mib->tx_bf_rx_fb_bw = FIELD_GET(MT_ETBF_RX_FB_BW, cnt);
mib->tx_bf_rx_fb_nc_cnt += FIELD_GET(MT_ETBF_RX_FB_NC, cnt);
mib->tx_bf_rx_fb_nr_cnt += FIELD_GET(MT_ETBF_RX_FB_NR, cnt);
cnt = mt76_rr(dev, MT_MIB_BSCR7(band_idx));
mib->tx_bf_fb_trig_cnt += cnt;
cnt = mt76_rr(dev, MT_MIB_BSCR17(band_idx));
mib->tx_bf_fb_cpl_cnt += 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;
}
/* rts count */
cnt = mt76_rr(dev, MT_MIB_BTSCR5(band_idx));
mib->rts_cnt += cnt;
/* rts retry count */
cnt = mt76_rr(dev, MT_MIB_BTSCR6(band_idx));
mib->rts_retries_cnt += cnt;
/* ba miss count */
cnt = mt76_rr(dev, MT_MIB_BTSCR0(band_idx));
mib->ba_miss_cnt += cnt;
/* ack fail count */
cnt = mt76_rr(dev, MT_MIB_BFTFCR(band_idx));
mib->ack_fail_cnt += cnt;
for (i = 0; i < 16; i++) {
cnt = mt76_rr(dev, MT_TX_AGG_CNT(band_idx, i));
phy->mt76->aggr_stats[i] += cnt;
}
}
void mt7996_mac_sta_rc_work(struct work_struct *work)
{
struct mt7996_dev *dev = container_of(work, struct mt7996_dev, rc_work);
struct ieee80211_sta *sta;
struct ieee80211_vif *vif;
struct mt7996_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 mt7996_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))
mt7996_mcu_add_rate_ctrl(dev, vif, sta, true);
/* TODO: smps change */
spin_lock_bh(&dev->sta_poll_lock);
}
spin_unlock_bh(&dev->sta_poll_lock);
}
void mt7996_mac_work(struct work_struct *work)
{
struct mt7996_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;
mt7996_mac_update_stats(phy);
}
mutex_unlock(&mphy->dev->mutex);
mt76_tx_status_check(mphy->dev, false);
ieee80211_queue_delayed_work(mphy->hw, &mphy->mac_work,
MT7996_WATCHDOG_TIME);
}
static void mt7996_dfs_stop_radar_detector(struct mt7996_phy *phy)
{
struct mt7996_dev *dev = phy->dev;
if (phy->rdd_state & BIT(0))
mt7996_mcu_rdd_cmd(dev, RDD_STOP, 0,
MT_RX_SEL0, 0);
if (phy->rdd_state & BIT(1))
mt7996_mcu_rdd_cmd(dev, RDD_STOP, 1,
MT_RX_SEL0, 0);
}
static int mt7996_dfs_start_rdd(struct mt7996_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 = mt7996_mcu_rdd_cmd(dev, RDD_START, chain,
MT_RX_SEL0, region);
if (err < 0)
return err;
return mt7996_mcu_rdd_cmd(dev, RDD_DET_MODE, chain,
MT_RX_SEL0, 1);
}
static int mt7996_dfs_start_radar_detector(struct mt7996_phy *phy)
{
struct cfg80211_chan_def *chandef = &phy->mt76->chandef;
struct mt7996_dev *dev = phy->dev;
u8 band_idx = phy->mt76->band_idx;
int err;
/* start CAC */
err = mt7996_mcu_rdd_cmd(dev, RDD_CAC_START, band_idx,
MT_RX_SEL0, 0);
if (err < 0)
return err;
err = mt7996_dfs_start_rdd(dev, band_idx);
if (err < 0)
return err;
phy->rdd_state |= BIT(band_idx);
if (chandef->width == NL80211_CHAN_WIDTH_160 ||
chandef->width == NL80211_CHAN_WIDTH_80P80) {
err = mt7996_dfs_start_rdd(dev, 1);
if (err < 0)
return err;
phy->rdd_state |= BIT(1);
}
return 0;
}
static int
mt7996_dfs_init_radar_specs(struct mt7996_phy *phy)
{
const struct mt7996_dfs_radar_spec *radar_specs;
struct mt7996_dev *dev = phy->dev;
int err, i;
switch (dev->mt76.region) {
case NL80211_DFS_FCC:
radar_specs = &fcc_radar_specs;
err = mt7996_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 = mt7996_mcu_set_radar_th(dev, i,
&radar_specs->radar_pattern[i]);
if (err < 0)
return err;
}
return mt7996_mcu_set_pulse_th(dev, &radar_specs->pulse_th);
}
int mt7996_dfs_init_radar_detector(struct mt7996_phy *phy)
{
struct mt7996_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)
mt7996_dfs_stop_radar_detector(phy);
if (dfs_state == MT_DFS_STATE_DISABLED)
goto stop;
if (prev_state <= MT_DFS_STATE_DISABLED) {
err = mt7996_dfs_init_radar_specs(phy);
if (err < 0)
return err;
err = mt7996_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 = mt7996_mcu_rdd_cmd(dev, RDD_CAC_END,
phy->mt76->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 = mt7996_mcu_rdd_cmd(dev, RDD_NORMAL_START,
phy->mt76->band_idx, MT_RX_SEL0, 0);
if (err < 0)
return err;
mt7996_dfs_stop_radar_detector(phy);
phy->mt76->dfs_state = MT_DFS_STATE_DISABLED;
return 0;
}
static int
mt7996_mac_twt_duration_align(int duration)
{
return duration << 8;
}
static u64
mt7996_mac_twt_sched_list_add(struct mt7996_dev *dev,
struct mt7996_twt_flow *flow)
{
struct mt7996_twt_flow *iter, *iter_next;
u32 duration = flow->duration << 8;
u64 start_tsf;
iter = list_first_entry_or_null(&dev->twt_list,
struct mt7996_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 +
mt7996_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 mt7996_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;
}
void mt7996_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 mt7996_sta *msta = (struct mt7996_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 mt7996_dev *dev = mt7996_hw_dev(hw);
struct mt7996_twt_flow *flow;
int flowid, table_id;
u8 exp;
if (mt7996_mac_check_twt_req(twt))
goto out;
mutex_lock(&dev->mt76.mutex);
if (dev->twt.n_agrt == MT7996_MAX_TWT_AGRT)
goto unlock;
if (hweight8(msta->twt.flowid_mask) == ARRAY_SIZE(msta->twt.flow))
goto unlock;
flowid = ffs(~msta->twt.flowid_mask) - 1;
le16p_replace_bits(&twt_agrt->req_type, 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);
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 = mt7996_mac_twt_sched_list_add(dev, flow);
curr_tsf = __mt7996_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 (mt7996_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:
le16p_replace_bits(&twt_agrt->req_type, 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 mt7996_mac_twt_teardown_flow(struct mt7996_dev *dev,
struct mt7996_sta *msta,
u8 flowid)
{
struct mt7996_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 (mt7996_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--;
}