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mac.c
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// SPDX-License-Identifier: ISC
/* Copyright (C) 2020 MediaTek Inc. */
#include <linux/etherdevice.h>
#include <linux/timekeeping.h>
#include "mt7915.h"
#include "../dma.h"
#include "mac.h"
#include "mcu.h"
#define to_rssi(field, rxv) ((FIELD_GET(field, rxv) - 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 mt7915_dfs_radar_spec etsi_radar_specs = {
.pulse_th = { 110, -10, -80, 40, 5200, 128, 5200 },
.radar_pattern = {
[5] = { 1, 0, 6, 32, 28, 0, 990, 5010, 17, 1, 1 },
[6] = { 1, 0, 9, 32, 28, 0, 615, 5010, 27, 1, 1 },
[7] = { 1, 0, 15, 32, 28, 0, 240, 445, 27, 1, 1 },
[8] = { 1, 0, 12, 32, 28, 0, 240, 510, 42, 1, 1 },
[9] = { 1, 1, 0, 0, 0, 0, 2490, 3343, 14, 0, 0, 12, 32, 28, { }, 126 },
[10] = { 1, 1, 0, 0, 0, 0, 2490, 3343, 14, 0, 0, 15, 32, 24, { }, 126 },
[11] = { 1, 1, 0, 0, 0, 0, 823, 2510, 14, 0, 0, 18, 32, 28, { }, 54 },
[12] = { 1, 1, 0, 0, 0, 0, 823, 2510, 14, 0, 0, 27, 32, 24, { }, 54 },
},
};
static const struct mt7915_dfs_radar_spec fcc_radar_specs = {
.pulse_th = { 110, -10, -80, 40, 5200, 128, 5200 },
.radar_pattern = {
[0] = { 1, 0, 8, 32, 28, 0, 508, 3076, 13, 1, 1 },
[1] = { 1, 0, 12, 32, 28, 0, 140, 240, 17, 1, 1 },
[2] = { 1, 0, 8, 32, 28, 0, 190, 510, 22, 1, 1 },
[3] = { 1, 0, 6, 32, 28, 0, 190, 510, 32, 1, 1 },
[4] = { 1, 0, 9, 255, 28, 0, 323, 343, 13, 1, 32 },
},
};
static const struct mt7915_dfs_radar_spec jp_radar_specs = {
.pulse_th = { 110, -10, -80, 40, 5200, 128, 5200 },
.radar_pattern = {
[0] = { 1, 0, 8, 32, 28, 0, 508, 3076, 13, 1, 1 },
[1] = { 1, 0, 12, 32, 28, 0, 140, 240, 17, 1, 1 },
[2] = { 1, 0, 8, 32, 28, 0, 190, 510, 22, 1, 1 },
[3] = { 1, 0, 6, 32, 28, 0, 190, 510, 32, 1, 1 },
[4] = { 1, 0, 9, 255, 28, 0, 323, 343, 13, 1, 32 },
[13] = { 1, 0, 7, 32, 28, 0, 3836, 3856, 14, 1, 1 },
[14] = { 1, 0, 6, 32, 28, 0, 615, 5010, 110, 1, 1 },
[15] = { 1, 1, 0, 0, 0, 0, 15, 5010, 110, 0, 0, 12, 32, 28 },
},
};
static struct mt76_wcid *mt7915_rx_get_wcid(struct mt7915_dev *dev,
u16 idx, bool unicast)
{
struct mt7915_sta *sta;
struct mt76_wcid *wcid;
if (idx >= ARRAY_SIZE(dev->mt76.wcid))
return NULL;
wcid = rcu_dereference(dev->mt76.wcid[idx]);
if (unicast || !wcid)
return wcid;
if (!wcid->sta)
return NULL;
sta = container_of(wcid, struct mt7915_sta, wcid);
if (!sta->vif)
return NULL;
return &sta->vif->sta.wcid;
}
void mt7915_sta_ps(struct mt76_dev *mdev, struct ieee80211_sta *sta, bool ps)
{
}
bool mt7915_mac_wtbl_update(struct mt7915_dev *dev, int idx, u32 mask)
{
mt76_rmw(dev, MT_WTBL_UPDATE, MT_WTBL_UPDATE_WLAN_IDX,
FIELD_PREP(MT_WTBL_UPDATE_WLAN_IDX, idx) | mask);
return mt76_poll(dev, MT_WTBL_UPDATE, MT_WTBL_UPDATE_BUSY,
0, 5000);
}
u32 mt7915_mac_wtbl_lmac_addr(struct mt7915_dev *dev, u16 wcid, u8 dw)
{
mt76_wr(dev, MT_WTBLON_TOP_WDUCR,
FIELD_PREP(MT_WTBLON_TOP_WDUCR_GROUP, (wcid >> 7)));
return MT_WTBL_LMAC_OFFS(wcid, dw);
}
static void mt7915_mac_sta_poll(struct mt7915_dev *dev)
{
static const u8 ac_to_tid[] = {
[IEEE80211_AC_BE] = 0,
[IEEE80211_AC_BK] = 1,
[IEEE80211_AC_VI] = 4,
[IEEE80211_AC_VO] = 6
};
struct ieee80211_sta *sta;
struct mt7915_sta *msta;
struct rate_info *rate;
u32 tx_time[IEEE80211_NUM_ACS], rx_time[IEEE80211_NUM_ACS];
LIST_HEAD(sta_poll_list);
int i;
spin_lock_bh(&dev->sta_poll_lock);
list_splice_init(&dev->sta_poll_list, &sta_poll_list);
spin_unlock_bh(&dev->sta_poll_lock);
rcu_read_lock();
while (true) {
bool clear = false;
u32 addr, val;
u16 idx;
u8 bw;
spin_lock_bh(&dev->sta_poll_lock);
if (list_empty(&sta_poll_list)) {
spin_unlock_bh(&dev->sta_poll_lock);
break;
}
msta = list_first_entry(&sta_poll_list,
struct mt7915_sta, poll_list);
list_del_init(&msta->poll_list);
spin_unlock_bh(&dev->sta_poll_lock);
idx = msta->wcid.idx;
addr = mt7915_mac_wtbl_lmac_addr(dev, idx, 20);
for (i = 0; i < IEEE80211_NUM_ACS; i++) {
u32 tx_last = msta->airtime_ac[i];
u32 rx_last = msta->airtime_ac[i + 4];
msta->airtime_ac[i] = mt76_rr(dev, addr);
msta->airtime_ac[i + 4] = mt76_rr(dev, addr + 4);
tx_time[i] = msta->airtime_ac[i] - tx_last;
rx_time[i] = msta->airtime_ac[i + 4] - rx_last;
if ((tx_last | rx_last) & BIT(30))
clear = true;
addr += 8;
}
if (clear) {
mt7915_mac_wtbl_update(dev, idx,
MT_WTBL_UPDATE_ADM_COUNT_CLEAR);
memset(msta->airtime_ac, 0, sizeof(msta->airtime_ac));
}
if (!msta->wcid.sta)
continue;
sta = container_of((void *)msta, struct ieee80211_sta,
drv_priv);
for (i = 0; i < IEEE80211_NUM_ACS; i++) {
u8 q = mt7915_lmac_mapping(dev, i);
u32 tx_cur = tx_time[q];
u32 rx_cur = rx_time[q];
u8 tid = ac_to_tid[i];
if (!tx_cur && !rx_cur)
continue;
ieee80211_sta_register_airtime(sta, tid, tx_cur,
rx_cur);
}
/*
* We don't support reading GI info from txs packets.
* For accurate tx status reporting and AQL improvement,
* we need to make sure that flags match so polling GI
* from per-sta counters directly.
*/
rate = &msta->wcid.rate;
addr = mt7915_mac_wtbl_lmac_addr(dev, idx, 7);
val = mt76_rr(dev, addr);
switch (rate->bw) {
case RATE_INFO_BW_160:
bw = IEEE80211_STA_RX_BW_160;
break;
case RATE_INFO_BW_80:
bw = IEEE80211_STA_RX_BW_80;
break;
case RATE_INFO_BW_40:
bw = IEEE80211_STA_RX_BW_40;
break;
default:
bw = IEEE80211_STA_RX_BW_20;
break;
}
if (rate->flags & RATE_INFO_FLAGS_HE_MCS) {
u8 offs = 24 + 2 * bw;
rate->he_gi = (val & (0x3 << offs)) >> offs;
} else if (rate->flags &
(RATE_INFO_FLAGS_VHT_MCS | RATE_INFO_FLAGS_MCS)) {
if (val & BIT(12 + bw))
rate->flags |= RATE_INFO_FLAGS_SHORT_GI;
else
rate->flags &= ~RATE_INFO_FLAGS_SHORT_GI;
}
}
rcu_read_unlock();
}
static void
mt7915_mac_decode_he_radiotap_ru(struct mt76_rx_status *status,
struct ieee80211_radiotap_he *he,
__le32 *rxv)
{
u32 ru_h, ru_l;
u8 ru, offs = 0;
ru_l = FIELD_GET(MT_PRXV_HE_RU_ALLOC_L, le32_to_cpu(rxv[0]));
ru_h = FIELD_GET(MT_PRXV_HE_RU_ALLOC_H, le32_to_cpu(rxv[1]));
ru = (u8)(ru_l | ru_h << 4);
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
mt7915_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[2], MT_CRXV_HE_NUM_USER));
he_mu->ru_ch1[0] = le32_get_bits(rxv[3], MT_CRXV_HE_RU0);
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[3], MT_CRXV_HE_RU1);
}
if (status->bw >= RATE_INFO_BW_80) {
he_mu->ru_ch1[1] = le32_get_bits(rxv[3], MT_CRXV_HE_RU2);
he_mu->ru_ch2[1] = le32_get_bits(rxv[3], MT_CRXV_HE_RU3);
}
}
static void
mt7915_mac_decode_he_radiotap(struct sk_buff *skb, __le32 *rxv, u32 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[2], 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[14]) |
HE_PREP(DATA3_LDPC_XSYMSEG, LDPC_EXT_SYM, rxv[2]);
he->data4 = HE_PREP(DATA4_SU_MU_SPTL_REUSE, SR_MASK, rxv[11]);
he->data5 = HE_PREP(DATA5_PE_DISAMBIG, PE_DISAMBIG, rxv[2]) |
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[14]) |
HE_PREP(DATA6_DOPPLER, DOPPLER, rxv[14]);
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->data3 |= HE_PREP(DATA3_BEAM_CHANGE, BEAM_CHNG, rxv[14]) |
HE_PREP(DATA3_UL_DL, UPLINK, rxv[2]);
break;
case MT_PHY_TYPE_HE_EXT_SU:
he->data1 |= HE_BITS(DATA1_FORMAT_EXT_SU) |
HE_BITS(DATA1_UL_DL_KNOWN);
he->data3 |= HE_PREP(DATA3_UL_DL, UPLINK, rxv[2]);
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[2]);
he->data4 |= HE_PREP(DATA4_MU_STA_ID, MU_AID, rxv[7]);
mt7915_mac_decode_he_radiotap_ru(status, he, rxv);
mt7915_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_REUSE2, SR1_MASK, rxv[11]) |
HE_PREP(DATA4_TB_SPTL_REUSE3, SR2_MASK, rxv[11]) |
HE_PREP(DATA4_TB_SPTL_REUSE4, SR3_MASK, rxv[11]);
mt7915_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 mt7915_reverse_frag0_hdr_trans(struct sk_buff *skb, u16 hdr_gap)
{
struct mt76_rx_status *status = (struct mt76_rx_status *)skb->cb;
struct mt7915_sta *msta = (struct mt7915_sta *)status->wcid;
struct ieee80211_sta *sta;
struct ieee80211_vif *vif;
struct ieee80211_hdr hdr;
struct ethhdr eth_hdr;
__le32 *rxd = (__le32 *)skb->data;
__le32 qos_ctrl, ht_ctrl;
if (FIELD_GET(MT_RXD3_NORMAL_ADDR_TYPE, le32_to_cpu(rxd[3])) !=
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 */
memcpy(ð_hdr, skb->data + hdr_gap, sizeof(eth_hdr));
hdr.frame_control = FIELD_GET(MT_RXD6_FRAME_CONTROL, rxd[6]);
hdr.seq_ctrl = FIELD_GET(MT_RXD8_SEQ_CTRL, rxd[8]);
qos_ctrl = FIELD_GET(MT_RXD8_QOS_CTL, rxd[8]);
ht_ctrl = FIELD_GET(MT_RXD9_HT_CONTROL, rxd[9]);
hdr.duration_id = 0;
ether_addr_copy(hdr.addr1, vif->addr);
ether_addr_copy(hdr.addr2, sta->addr);
switch (le16_to_cpu(hdr.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:
break;
}
skb_pull(skb, hdr_gap + sizeof(struct ethhdr) - 2);
if (eth_hdr.h_proto == htons(ETH_P_AARP) ||
eth_hdr.h_proto == htons(ETH_P_IPX))
ether_addr_copy(skb_push(skb, ETH_ALEN), bridge_tunnel_header);
else if (eth_hdr.h_proto >= htons(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, 2), &ht_ctrl, 2);
if (ieee80211_is_data_qos(hdr.frame_control))
memcpy(skb_push(skb, 2), &qos_ctrl, 2);
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
mt7915_mac_fill_rx(struct mt7915_dev *dev, struct sk_buff *skb)
{
struct mt76_rx_status *status = (struct mt76_rx_status *)skb->cb;
struct mt76_phy *mphy = &dev->mt76.phy;
struct mt7915_phy *phy = &dev->phy;
struct ieee80211_supported_band *sband;
__le32 *rxd = (__le32 *)skb->data;
__le32 *rxv = NULL;
u32 mode = 0;
u32 rxd0 = le32_to_cpu(rxd[0]);
u32 rxd1 = le32_to_cpu(rxd[1]);
u32 rxd2 = le32_to_cpu(rxd[2]);
u32 rxd3 = le32_to_cpu(rxd[3]);
u32 rxd4 = le32_to_cpu(rxd[4]);
u32 csum_mask = MT_RXD0_NORMAL_IP_SUM | MT_RXD0_NORMAL_UDP_TCP_SUM;
bool unicast, insert_ccmp_hdr = false;
u8 remove_pad, amsdu_info;
bool hdr_trans;
u16 hdr_gap;
u16 seq_ctrl = 0;
u8 qos_ctl = 0;
__le16 fc = 0;
int i, idx;
memset(status, 0, sizeof(*status));
if (rxd1 & MT_RXD1_NORMAL_BAND_IDX) {
mphy = dev->mt76.phy2;
if (!mphy)
return -EINVAL;
phy = mphy->priv;
status->ext_phy = true;
}
if (!test_bit(MT76_STATE_RUNNING, &mphy->state))
return -EINVAL;
if (rxd2 & MT_RXD2_NORMAL_AMSDU_ERR)
return -EINVAL;
hdr_trans = rxd2 & MT_RXD2_NORMAL_HDR_TRANS;
if (hdr_trans && (rxd1 & MT_RXD1_NORMAL_CM))
return -EINVAL;
/* ICV error or CCMP/BIP/WPI MIC error */
if (rxd1 & MT_RXD1_NORMAL_ICV_ERR)
status->flag |= RX_FLAG_ONLY_MONITOR;
unicast = FIELD_GET(MT_RXD3_NORMAL_ADDR_TYPE, rxd3) == MT_RXD3_NORMAL_U2M;
idx = FIELD_GET(MT_RXD1_NORMAL_WLAN_IDX, rxd1);
status->wcid = mt7915_rx_get_wcid(dev, idx, unicast);
if (status->wcid) {
struct mt7915_sta *msta;
msta = container_of(status->wcid, struct mt7915_sta, wcid);
spin_lock_bh(&dev->sta_poll_lock);
if (list_empty(&msta->poll_list))
list_add_tail(&msta->poll_list, &dev->sta_poll_list);
spin_unlock_bh(&dev->sta_poll_lock);
}
status->freq = mphy->chandef.chan->center_freq;
status->band = mphy->chandef.chan->band;
if (status->band == NL80211_BAND_5GHZ)
sband = &mphy->sband_5g.sband;
else
sband = &mphy->sband_2g.sband;
if (!sband->channels)
return -EINVAL;
if ((rxd0 & csum_mask) == csum_mask)
skb->ip_summed = CHECKSUM_UNNECESSARY;
if (rxd1 & MT_RXD1_NORMAL_FCS_ERR)
status->flag |= RX_FLAG_FAILED_FCS_CRC;
if (rxd1 & MT_RXD1_NORMAL_TKIP_MIC_ERR)
status->flag |= RX_FLAG_MMIC_ERROR;
if (FIELD_GET(MT_RXD1_NORMAL_SEC_MODE, rxd1) != 0 &&
!(rxd1 & (MT_RXD1_NORMAL_CLM | MT_RXD1_NORMAL_CM))) {
status->flag |= RX_FLAG_DECRYPTED;
status->flag |= RX_FLAG_IV_STRIPPED;
status->flag |= RX_FLAG_MMIC_STRIPPED | RX_FLAG_MIC_STRIPPED;
}
remove_pad = FIELD_GET(MT_RXD2_NORMAL_HDR_OFFSET, rxd2);
if (rxd2 & MT_RXD2_NORMAL_MAX_LEN_ERROR)
return -EINVAL;
rxd += 6;
if (rxd1 & MT_RXD1_NORMAL_GROUP_4) {
u32 v0 = le32_to_cpu(rxd[0]);
u32 v2 = le32_to_cpu(rxd[2]);
fc = cpu_to_le16(FIELD_GET(MT_RXD6_FRAME_CONTROL, v0));
qos_ctl = FIELD_GET(MT_RXD8_QOS_CTL, v2);
seq_ctrl = FIELD_GET(MT_RXD8_SEQ_CTRL, v2);
rxd += 4;
if ((u8 *)rxd - skb->data >= skb->len)
return -EINVAL;
}
if (rxd1 & MT_RXD1_NORMAL_GROUP_1) {
u8 *data = (u8 *)rxd;
if (status->flag & RX_FLAG_DECRYPTED) {
switch (FIELD_GET(MT_RXD1_NORMAL_SEC_MODE, rxd1)) {
case MT_CIPHER_AES_CCMP:
case MT_CIPHER_CCMP_CCX:
case MT_CIPHER_CCMP_256:
insert_ccmp_hdr =
FIELD_GET(MT_RXD2_NORMAL_FRAG, rxd2);
fallthrough;
case MT_CIPHER_TKIP:
case MT_CIPHER_TKIP_NO_MIC:
case MT_CIPHER_GCMP:
case MT_CIPHER_GCMP_256:
status->iv[0] = data[5];
status->iv[1] = data[4];
status->iv[2] = data[3];
status->iv[3] = data[2];
status->iv[4] = data[1];
status->iv[5] = data[0];
break;
default:
break;
}
}
rxd += 4;
if ((u8 *)rxd - skb->data >= skb->len)
return -EINVAL;
}
if (rxd1 & MT_RXD1_NORMAL_GROUP_2) {
status->timestamp = le32_to_cpu(rxd[0]);
status->flag |= RX_FLAG_MACTIME_START;
if (!(rxd2 & MT_RXD2_NORMAL_NON_AMPDU)) {
status->flag |= RX_FLAG_AMPDU_DETAILS;
/* all subframes of an A-MPDU have the same timestamp */
if (phy->rx_ampdu_ts != status->timestamp) {
if (!++phy->ampdu_ref)
phy->ampdu_ref++;
}
phy->rx_ampdu_ts = status->timestamp;
status->ampdu_ref = phy->ampdu_ref;
}
rxd += 2;
if ((u8 *)rxd - skb->data >= skb->len)
return -EINVAL;
}
/* RXD Group 3 - P-RXV */
if (rxd1 & MT_RXD1_NORMAL_GROUP_3) {
u32 v0, v1, v2;
rxv = rxd;
rxd += 2;
if ((u8 *)rxd - skb->data >= skb->len)
return -EINVAL;
v0 = le32_to_cpu(rxv[0]);
v1 = le32_to_cpu(rxv[1]);
v2 = le32_to_cpu(rxv[2]);
if (v0 & MT_PRXV_HT_AD_CODE)
status->enc_flags |= RX_ENC_FLAG_LDPC;
status->chains = mphy->antenna_mask;
status->chain_signal[0] = to_rssi(MT_PRXV_RCPI0, v1);
status->chain_signal[1] = to_rssi(MT_PRXV_RCPI1, v1);
status->chain_signal[2] = to_rssi(MT_PRXV_RCPI2, v1);
status->chain_signal[3] = to_rssi(MT_PRXV_RCPI3, v1);
status->signal = status->chain_signal[0];
for (i = 1; i < hweight8(mphy->antenna_mask); i++) {
if (!(status->chains & BIT(i)))
continue;
status->signal = max(status->signal,
status->chain_signal[i]);
}
/* RXD Group 5 - C-RXV */
if (rxd1 & MT_RXD1_NORMAL_GROUP_5) {
u8 stbc = FIELD_GET(MT_CRXV_HT_STBC, v2);
u8 gi = FIELD_GET(MT_CRXV_HT_SHORT_GI, v2);
bool cck = false;
rxd += 18;
if ((u8 *)rxd - skb->data >= skb->len)
return -EINVAL;
idx = i = FIELD_GET(MT_PRXV_TX_RATE, v0);
mode = FIELD_GET(MT_CRXV_TX_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 (i > 31)
return -EINVAL;
break;
case MT_PHY_TYPE_VHT:
status->nss =
FIELD_GET(MT_PRXV_NSTS, v0) + 1;
status->encoding = RX_ENC_VHT;
if (i > 9)
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 =
FIELD_GET(MT_PRXV_NSTS, v0) + 1;
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 = !!(idx & MT_PRXV_TX_DCM);
break;
default:
return -EINVAL;
}
status->rate_idx = i;
switch (FIELD_GET(MT_CRXV_FRAME_MODE, v2)) {
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;
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;
}
}
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 (mt7915_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) {
pad_start = ieee80211_get_hdrlen_from_skb(skb);
} else if (hdr_trans && (rxd2 & MT_RXD2_NORMAL_HDR_TRANS_ERROR)) {
/*
* When header translation failure is indicated,
* the hardware will insert an extra 2-byte field
* containing the data length after the protocol
* type field.
*/
pad_start = 12;
if (get_unaligned_be16(skb->data + pad_start) == ETH_P_8021Q)
pad_start += 4;
if (get_unaligned_be16(skb->data + pad_start) !=
skb->len - pad_start - 2)
pad_start = 0;
}
if (pad_start) {
memmove(skb->data + 2, skb->data, pad_start);
skb_pull(skb, 2);
}
}
if (!hdr_trans) {
struct ieee80211_hdr *hdr = mt76_skb_get_hdr(skb);
if (insert_ccmp_hdr) {
u8 key_id = FIELD_GET(MT_RXD1_NORMAL_KEY_ID, rxd1);
mt76_insert_ccmp_hdr(skb, key_id);
}
fc = hdr->frame_control;
if (ieee80211_is_data_qos(fc)) {
seq_ctrl = le16_to_cpu(hdr->seq_ctrl);
qos_ctl = *ieee80211_get_qos_ctl(hdr);
}
} else {
status->flag |= RX_FLAG_8023;
}
if (rxv && mode >= MT_PHY_TYPE_HE_SU)
mt7915_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
mt7915_mac_fill_rx_vector(struct mt7915_dev *dev, struct sk_buff *skb)
{
#ifdef CONFIG_NL80211_TESTMODE
struct mt7915_phy *phy = &dev->phy;
__le32 *rxd = (__le32 *)skb->data;
__le32 *rxv_hdr = rxd + 2;
__le32 *rxv = rxd + 4;
u32 rcpi, ib_rssi, wb_rssi, v20, v21;
bool ext_phy;
s32 foe;
u8 snr;
int i;
ext_phy = FIELD_GET(MT_RXV_HDR_BAND_IDX, le32_to_cpu(rxv_hdr[1]));
if (ext_phy)
phy = mt7915_ext_phy(dev);
rcpi = le32_to_cpu(rxv[6]);
ib_rssi = le32_to_cpu(rxv[7]);
wb_rssi = le32_to_cpu(rxv[8]) >> 5;
for (i = 0; i < 4; i++, rcpi >>= 8, ib_rssi >>= 8, wb_rssi >>= 9) {
if (i == 3)
wb_rssi = le32_to_cpu(rxv[9]);
phy->test.last_rcpi[i] = rcpi & 0xff;
phy->test.last_ib_rssi[i] = ib_rssi & 0xff;
phy->test.last_wb_rssi[i] = wb_rssi & 0xff;
}
v20 = le32_to_cpu(rxv[20]);
v21 = le32_to_cpu(rxv[21]);
foe = FIELD_GET(MT_CRXV_FOE_LO, v20) |
(FIELD_GET(MT_CRXV_FOE_HI, v21) << MT_CRXV_FOE_SHIFT);
snr = FIELD_GET(MT_CRXV_SNR, v20) - 16;
phy->test.last_freq_offset = foe;
phy->test.last_snr = snr;
#endif
dev_kfree_skb(skb);
}
static void
mt7915_mac_write_txwi_tm(struct mt7915_phy *phy, __le32 *txwi,
struct sk_buff *skb)
{
#ifdef CONFIG_NL80211_TESTMODE
struct mt76_testmode_data *td = &phy->mt76->test;
const struct ieee80211_rate *r;
u8 bw, mode, nss = td->tx_rate_nss;
u8 rate_idx = td->tx_rate_idx;
u16 rateval = 0;
u32 val;
bool cck = false;
int band;
if (skb != phy->mt76->test.tx_skb)
return;
switch (td->tx_rate_mode) {
case MT76_TM_TX_MODE_HT:
nss = 1 + (rate_idx >> 3);
mode = MT_PHY_TYPE_HT;
break;
case MT76_TM_TX_MODE_VHT:
mode = MT_PHY_TYPE_VHT;
break;
case MT76_TM_TX_MODE_HE_SU:
mode = MT_PHY_TYPE_HE_SU;
break;
case MT76_TM_TX_MODE_HE_EXT_SU:
mode = MT_PHY_TYPE_HE_EXT_SU;
break;
case MT76_TM_TX_MODE_HE_TB:
mode = MT_PHY_TYPE_HE_TB;
break;
case MT76_TM_TX_MODE_HE_MU:
mode = MT_PHY_TYPE_HE_MU;
break;
case MT76_TM_TX_MODE_CCK:
cck = true;
fallthrough;
case MT76_TM_TX_MODE_OFDM:
band = phy->mt76->chandef.chan->band;
if (band == NL80211_BAND_2GHZ && !cck)
rate_idx += 4;
r = &phy->mt76->hw->wiphy->bands[band]->bitrates[rate_idx];
val = cck ? r->hw_value_short : r->hw_value;
mode = val >> 8;
rate_idx = val & 0xff;
break;
default:
mode = MT_PHY_TYPE_OFDM;
break;
}
switch (phy->mt76->chandef.width) {
case NL80211_CHAN_WIDTH_40:
bw = 1;
break;
case NL80211_CHAN_WIDTH_80:
bw = 2;
break;
case NL80211_CHAN_WIDTH_80P80:
case NL80211_CHAN_WIDTH_160:
bw = 3;
break;
default:
bw = 0;
break;
}
if (td->tx_rate_stbc && nss == 1) {
nss++;
rateval |= MT_TX_RATE_STBC;
}
rateval |= FIELD_PREP(MT_TX_RATE_IDX, rate_idx) |
FIELD_PREP(MT_TX_RATE_MODE, mode) |
FIELD_PREP(MT_TX_RATE_NSS, nss - 1);
txwi[2] |= cpu_to_le32(MT_TXD2_FIX_RATE);
le32p_replace_bits(&txwi[3], 1, MT_TXD3_REM_TX_COUNT);
if (td->tx_rate_mode < MT76_TM_TX_MODE_HT)
txwi[3] |= cpu_to_le32(MT_TXD3_BA_DISABLE);
val = MT_TXD6_FIXED_BW |
FIELD_PREP(MT_TXD6_BW, bw) |
FIELD_PREP(MT_TXD6_TX_RATE, rateval) |
FIELD_PREP(MT_TXD6_SGI, td->tx_rate_sgi);
/* for HE_SU/HE_EXT_SU PPDU
* - 1x, 2x, 4x LTF + 0.8us GI
* - 2x LTF + 1.6us GI, 4x LTF + 3.2us GI
* for HE_MU PPDU
* - 2x, 4x LTF + 0.8us GI
* - 2x LTF + 1.6us GI, 4x LTF + 3.2us GI
* for HE_TB PPDU
* - 1x, 2x LTF + 1.6us GI
* - 4x LTF + 3.2us GI
*/
if (mode >= MT_PHY_TYPE_HE_SU)
val |= FIELD_PREP(MT_TXD6_HELTF, td->tx_ltf);
if (td->tx_rate_ldpc || (bw > 0 && mode >= MT_PHY_TYPE_HE_SU))
val |= MT_TXD6_LDPC;
txwi[3] &= ~cpu_to_le32(MT_TXD3_SN_VALID);
txwi[6] |= cpu_to_le32(val);
txwi[7] |= cpu_to_le32(FIELD_PREP(MT_TXD7_SPE_IDX,
phy->test.spe_idx));
#endif
}
static void
mt7915_mac_write_txwi_8023(struct mt7915_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;
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);
if (be16_to_cpu(skb->protocol) >= 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) |