@@ -2,4 +2,4 @@
obj-$(CONFIG_MT7921E) += mt7921e.o
-mt7921e-y := pci.o mcu.o
+mt7921e-y := pci.o mcu.o mac.o
new file mode 100644
@@ -0,0 +1,1364 @@
+// SPDX-License-Identifier: ISC
+/* Copyright (C) 2020 MediaTek Inc. */
+
+#include <linux/etherdevice.h>
+#include <linux/timekeeping.h>
+#include "mt7921.h"
+#include "../dma.h"
+#include "mac.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 struct mt76_wcid *mt7921_rx_get_wcid(struct mt7921_dev *dev,
+ u16 idx, bool unicast)
+{
+ struct mt7921_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 mt7921_sta, wcid);
+ if (!sta->vif)
+ return NULL;
+
+ return &sta->vif->sta.wcid;
+}
+
+void mt7921_sta_ps(struct mt76_dev *mdev, struct ieee80211_sta *sta, bool ps)
+{
+}
+
+bool mt7921_mac_wtbl_update(struct mt7921_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);
+}
+
+static u32 mt7921_mac_wtbl_lmac_addr(struct mt7921_dev *dev, u16 wcid)
+{
+ mt76_wr(dev, MT_WTBLON_TOP_WDUCR,
+ FIELD_PREP(MT_WTBLON_TOP_WDUCR_GROUP, (wcid >> 7)));
+
+ return MT_WTBL_LMAC_OFFS(wcid, 0);
+}
+
+static void mt7921_mac_sta_poll(struct mt7921_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 mt7921_sta *msta;
+ 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;
+ u16 idx;
+
+ 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 mt7921_sta, poll_list);
+ list_del_init(&msta->poll_list);
+ spin_unlock_bh(&dev->sta_poll_lock);
+
+ idx = msta->wcid.idx;
+ addr = mt7921_mac_wtbl_lmac_addr(dev, idx) + 20 * 4;
+
+ 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) {
+ mt7921_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 = mt7921_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);
+ }
+ }
+
+ rcu_read_unlock();
+}
+
+static void
+mt7921_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
+mt7921_mac_decode_he_radiotap(struct sk_buff *skb,
+ struct mt76_rx_status *status,
+ __le32 *rxv, u32 phy)
+{
+ /* TODO: struct ieee80211_radiotap_he_mu */
+ 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_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;
+
+ 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->data5 = HE_PREP(DATA5_PE_DISAMBIG, PE_DISAMBIG, rxv[2]) |
+ le16_encode_bits(ltf_size,
+ IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE);
+ he->data6 = HE_PREP(DATA6_TXOP, TXOP_DUR, rxv[14]) |
+ HE_PREP(DATA6_DOPPLER, DOPPLER, rxv[14]);
+
+ switch (phy) {
+ 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_SPTL_REUSE_KNOWN);
+
+ he->data3 |= HE_PREP(DATA3_BEAM_CHANGE, BEAM_CHNG, rxv[14]) |
+ HE_PREP(DATA3_UL_DL, UPLINK, rxv[2]);
+ he->data4 |= HE_PREP(DATA4_SU_MU_SPTL_REUSE, SR_MASK, rxv[11]);
+ 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_BITS(DATA1_SPTL_REUSE_KNOWN);
+
+ he->data3 |= HE_PREP(DATA3_UL_DL, UPLINK, rxv[2]);
+ he->data4 |= HE_PREP(DATA4_SU_MU_SPTL_REUSE, SR_MASK, rxv[11]);
+
+ mt7921_mac_decode_he_radiotap_ru(status, he, rxv);
+ break;
+ case MT_PHY_TYPE_HE_TB:
+ he->data1 |= HE_BITS(DATA1_FORMAT_TRIG) |
+ HE_BITS(DATA1_SPTL_REUSE_KNOWN) |
+ 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[11]) |
+ 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]);
+
+ mt7921_mac_decode_he_radiotap_ru(status, he, rxv);
+ break;
+ default:
+ break;
+ }
+}
+
+static void
+mt7921_get_status_freq_info(struct mt7921_dev *dev, struct mt76_phy *mphy,
+ struct mt76_rx_status *status, u8 chfreq)
+{
+ if (!test_bit(MT76_HW_SCANNING, &mphy->state) &&
+ !test_bit(MT76_HW_SCHED_SCANNING, &mphy->state) &&
+ !test_bit(MT76_STATE_ROC, &mphy->state)) {
+ status->freq = mphy->chandef.chan->center_freq;
+ status->band = mphy->chandef.chan->band;
+ return;
+ }
+
+ status->band = chfreq <= 14 ? NL80211_BAND_2GHZ : NL80211_BAND_5GHZ;
+ status->freq = ieee80211_channel_to_frequency(chfreq, status->band);
+}
+
+int mt7921_mac_fill_rx(struct mt7921_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 mt7921_phy *phy = &dev->phy;
+ struct ieee80211_supported_band *sband;
+ struct ieee80211_hdr *hdr;
+ __le32 *rxd = (__le32 *)skb->data;
+ __le32 *rxv = NULL;
+ u32 mode = 0;
+ u32 rxd1 = le32_to_cpu(rxd[1]);
+ u32 rxd2 = le32_to_cpu(rxd[2]);
+ u32 rxd3 = le32_to_cpu(rxd[3]);
+ bool unicast, insert_ccmp_hdr = false;
+ u8 remove_pad;
+ int i, idx;
+ u8 chfreq;
+
+ memset(status, 0, sizeof(*status));
+
+ if (rxd1 & MT_RXD1_NORMAL_BAND_IDX)
+ return -EINVAL;
+
+ if (!test_bit(MT76_STATE_RUNNING, &mphy->state))
+ return -EINVAL;
+
+ chfreq = FIELD_GET(MT_RXD3_NORMAL_CH_FREQ, rxd3);
+ unicast = FIELD_GET(MT_RXD3_NORMAL_ADDR_TYPE, rxd3) == MT_RXD3_NORMAL_U2M;
+ idx = FIELD_GET(MT_RXD1_NORMAL_WLAN_IDX, rxd1);
+ status->wcid = mt7921_rx_get_wcid(dev, idx, unicast);
+
+ if (status->wcid) {
+ struct mt7921_sta *msta;
+
+ msta = container_of(status->wcid, struct mt7921_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);
+ }
+
+ mt7921_get_status_freq_info(dev, mphy, status, chfreq);
+
+ if (status->band == NL80211_BAND_5GHZ)
+ sband = &mphy->sband_5g.sband;
+ else
+ sband = &mphy->sband_2g.sband;
+
+ if (!sband->channels)
+ return -EINVAL;
+
+ 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;
+ }
+
+ 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 != rxd[14]) {
+ if (!++phy->ampdu_ref)
+ phy->ampdu_ref++;
+ }
+ phy->rx_ampdu_ts = rxd[14];
+
+ status->ampdu_ref = phy->ampdu_ref;
+ }
+
+ 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) {
+ 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) {
+ status->iv[0] = data[5];
+ status->iv[1] = data[4];
+ status->iv[2] = data[3];
+ status->iv[3] = data[2];
+ status->iv[4] = data[1];
+ status->iv[5] = data[0];
+
+ insert_ccmp_hdr = FIELD_GET(MT_RXD2_NORMAL_FRAG, rxd2);
+ }
+ rxd += 4;
+ if ((u8 *)rxd - skb->data >= skb->len)
+ return -EINVAL;
+ }
+
+ if (rxd1 & MT_RXD1_NORMAL_GROUP_2) {
+ 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:
+ status->flag |= RX_FLAG_RADIOTAP_HE_MU;
+ fallthrough;
+ 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;
+ status->flag |= RX_FLAG_RADIOTAP_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;
+ }
+ }
+
+ skb_pull(skb, (u8 *)rxd - skb->data + 2 * remove_pad);
+
+ if (insert_ccmp_hdr) {
+ u8 key_id = FIELD_GET(MT_RXD1_NORMAL_KEY_ID, rxd1);
+
+ mt76_insert_ccmp_hdr(skb, key_id);
+ }
+
+ if (rxv && status->flag & RX_FLAG_RADIOTAP_HE)
+ mt7921_mac_decode_he_radiotap(skb, status, rxv, mode);
+
+ hdr = mt76_skb_get_hdr(skb);
+ if (!status->wcid || !ieee80211_is_data_qos(hdr->frame_control))
+ return 0;
+
+ status->aggr = unicast &&
+ !ieee80211_is_qos_nullfunc(hdr->frame_control);
+ status->tid = *ieee80211_get_qos_ctl(hdr) & IEEE80211_QOS_CTL_TID_MASK;
+ status->seqno = IEEE80211_SEQ_TO_SN(le16_to_cpu(hdr->seq_ctrl));
+
+ return 0;
+}
+
+static void
+mt7921_mac_write_txwi_8023(struct mt7921_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) |
+ FIELD_PREP(MT_TXD2_SUB_TYPE, fc_stype);
+
+ txwi[2] |= cpu_to_le32(val);
+
+ val = FIELD_PREP(MT_TXD7_TYPE, fc_type) |
+ FIELD_PREP(MT_TXD7_SUB_TYPE, fc_stype);
+ txwi[7] |= cpu_to_le32(val);
+}
+
+static void
+mt7921_mac_write_txwi_80211(struct mt7921_dev *dev, __le32 *txwi,
+ struct sk_buff *skb, struct ieee80211_key_conf *key)
+{
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
+ struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data;
+ struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+ bool multicast = is_multicast_ether_addr(hdr->addr1);
+ u8 tid = skb->priority & IEEE80211_QOS_CTL_TID_MASK;
+ __le16 fc = hdr->frame_control;
+ u8 fc_type, fc_stype;
+ u32 val;
+
+ if (ieee80211_is_action(fc) &&
+ mgmt->u.action.category == WLAN_CATEGORY_BACK &&
+ mgmt->u.action.u.addba_req.action_code == WLAN_ACTION_ADDBA_REQ) {
+ u16 capab = le16_to_cpu(mgmt->u.action.u.addba_req.capab);
+
+ txwi[5] |= cpu_to_le32(MT_TXD5_ADD_BA);
+ tid = (capab >> 2) & IEEE80211_QOS_CTL_TID_MASK;
+ } else if (ieee80211_is_back_req(hdr->frame_control)) {
+ struct ieee80211_bar *bar = (struct ieee80211_bar *)hdr;
+ u16 control = le16_to_cpu(bar->control);
+
+ tid = FIELD_GET(IEEE80211_BAR_CTRL_TID_INFO_MASK, control);
+ }
+
+ val = FIELD_PREP(MT_TXD1_HDR_FORMAT, MT_HDR_FORMAT_802_11) |
+ FIELD_PREP(MT_TXD1_HDR_INFO,
+ ieee80211_get_hdrlen_from_skb(skb) / 2) |
+ FIELD_PREP(MT_TXD1_TID, tid);
+ txwi[1] |= cpu_to_le32(val);
+
+ fc_type = (le16_to_cpu(fc) & IEEE80211_FCTL_FTYPE) >> 2;
+ fc_stype = (le16_to_cpu(fc) & IEEE80211_FCTL_STYPE) >> 4;
+
+ val = FIELD_PREP(MT_TXD2_FRAME_TYPE, fc_type) |
+ FIELD_PREP(MT_TXD2_SUB_TYPE, fc_stype) |
+ FIELD_PREP(MT_TXD2_MULTICAST, multicast);
+
+ if (key && multicast && ieee80211_is_robust_mgmt_frame(skb) &&
+ key->cipher == WLAN_CIPHER_SUITE_AES_CMAC) {
+ val |= MT_TXD2_BIP;
+ txwi[3] &= ~cpu_to_le32(MT_TXD3_PROTECT_FRAME);
+ }
+
+ if (!ieee80211_is_data(fc) || multicast)
+ val |= MT_TXD2_FIX_RATE;
+
+ txwi[2] |= cpu_to_le32(val);
+
+ if (ieee80211_is_beacon(fc)) {
+ txwi[3] &= ~cpu_to_le32(MT_TXD3_SW_POWER_MGMT);
+ txwi[3] |= cpu_to_le32(MT_TXD3_REM_TX_COUNT);
+ }
+
+ if (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);
+ }
+
+ val = FIELD_PREP(MT_TXD7_TYPE, fc_type) |
+ FIELD_PREP(MT_TXD7_SUB_TYPE, fc_stype);
+ txwi[7] |= cpu_to_le32(val);
+}
+
+void mt7921_mac_write_txwi(struct mt7921_dev *dev, __le32 *txwi,
+ struct sk_buff *skb, struct mt76_wcid *wcid,
+ struct ieee80211_key_conf *key, bool beacon)
+{
+ struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+ struct ieee80211_vif *vif = info->control.vif;
+ struct mt76_phy *mphy = &dev->mphy;
+ 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;
+
+ if (vif) {
+ struct mt7921_vif *mvif = (struct mt7921_vif *)vif->drv_priv;
+
+ omac_idx = mvif->omac_idx;
+ wmm_idx = mvif->wmm_idx;
+ }
+
+ if (beacon) {
+ p_fmt = MT_TX_TYPE_FW;
+ q_idx = MT_LMAC_BCN0;
+ } else if (skb_get_queue_mapping(skb) >= MT_TXQ_PSD) {
+ p_fmt = MT_TX_TYPE_CT;
+ q_idx = MT_LMAC_ALTX0;
+ } else {
+ p_fmt = MT_TX_TYPE_CT;
+ q_idx = wmm_idx * MT7921_MAX_WMM_SETS +
+ mt7921_lmac_mapping(dev, 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 = MT_TXD1_LONG_FORMAT |
+ FIELD_PREP(MT_TXD1_WLAN_IDX, wcid->idx) |
+ FIELD_PREP(MT_TXD1_OWN_MAC, omac_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;
+
+ txwi[3] = cpu_to_le32(val);
+ txwi[4] = 0;
+ txwi[5] = 0;
+ txwi[6] = 0;
+ txwi[7] = wcid->amsdu ? cpu_to_le32(MT_TXD7_HW_AMSDU) : 0;
+
+ if (is_8023)
+ mt7921_mac_write_txwi_8023(dev, txwi, skb, wcid);
+ else
+ mt7921_mac_write_txwi_80211(dev, txwi, skb, key);
+
+ if (txwi[2] & cpu_to_le32(MT_TXD2_FIX_RATE)) {
+ u16 rate;
+
+ /* hardware won't add HTC for mgmt/ctrl frame */
+ txwi[2] |= cpu_to_le32(MT_TXD2_HTC_VLD);
+
+ if (mphy->chandef.chan->band == NL80211_BAND_5GHZ)
+ rate = MT7921_5G_RATE_DEFAULT;
+ else
+ rate = MT7921_2G_RATE_DEFAULT;
+
+ val = MT_TXD6_FIXED_BW |
+ FIELD_PREP(MT_TXD6_TX_RATE, rate);
+ txwi[6] |= cpu_to_le32(val);
+ txwi[3] |= cpu_to_le32(MT_TXD3_BA_DISABLE);
+ }
+}
+
+static void
+mt7921_write_hw_txp(struct mt7921_dev *dev, struct mt76_tx_info *tx_info,
+ void *txp_ptr, u32 id)
+{
+ struct mt7921_hw_txp *txp = txp_ptr;
+ struct mt7921_txp_ptr *ptr = &txp->ptr[0];
+ int i, nbuf = tx_info->nbuf - 1;
+
+ tx_info->buf[0].len = MT_TXD_SIZE + sizeof(*txp);
+ tx_info->nbuf = 1;
+
+ txp->msdu_id[0] = cpu_to_le16(id | MT_MSDU_ID_VALID);
+
+ for (i = 0; i < nbuf; i++) {
+ u16 len = tx_info->buf[i + 1].len & MT_TXD_LEN_MASK;
+ u32 addr = tx_info->buf[i + 1].addr;
+
+ if (i == nbuf - 1)
+ len |= MT_TXD_LEN_LAST;
+
+ if (i & 1) {
+ ptr->buf1 = cpu_to_le32(addr);
+ ptr->len1 = cpu_to_le16(len);
+ ptr++;
+ } else {
+ ptr->buf0 = cpu_to_le32(addr);
+ ptr->len0 = cpu_to_le16(len);
+ }
+ }
+}
+
+static void mt7921_set_tx_blocked(struct mt7921_dev *dev, bool blocked)
+{
+ struct mt76_phy *mphy = &dev->mphy;
+ struct mt76_queue *q;
+
+ q = mphy->q_tx[0];
+ if (blocked == q->blocked)
+ return;
+
+ q->blocked = blocked;
+ if (!blocked)
+ mt76_worker_schedule(&dev->mt76.tx_worker);
+}
+
+int mt7921_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 mt7921_dev *dev = container_of(mdev, struct mt7921_dev, mt76);
+ struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_info->skb);
+ struct ieee80211_key_conf *key = info->control.hw_key;
+ struct mt76_tx_cb *cb = mt76_tx_skb_cb(tx_info->skb);
+ struct mt76_txwi_cache *t;
+ struct mt7921_txp_common *txp;
+ int id;
+ u8 *txwi = (u8 *)txwi_ptr;
+
+ if (!wcid)
+ wcid = &dev->mt76.global_wcid;
+
+ cb->wcid = wcid->idx;
+
+ t = (struct mt76_txwi_cache *)(txwi + mdev->drv->txwi_size);
+ t->skb = tx_info->skb;
+
+ spin_lock_bh(&dev->token_lock);
+ id = idr_alloc(&dev->token, t, 0, MT7921_TOKEN_SIZE, GFP_ATOMIC);
+ if (id >= 0)
+ dev->token_count++;
+
+ if (dev->token_count >= MT7921_TOKEN_SIZE - MT7921_TOKEN_FREE_THR)
+ mt7921_set_tx_blocked(dev, true);
+ spin_unlock_bh(&dev->token_lock);
+
+ if (id < 0)
+ return id;
+
+ mt7921_mac_write_txwi(dev, txwi_ptr, tx_info->skb, wcid, key,
+ false);
+
+ txp = (struct mt7921_txp_common *)(txwi + MT_TXD_SIZE);
+ memset(txp, 0, sizeof(struct mt7921_txp_common));
+ mt7921_write_hw_txp(dev, tx_info, txp, id);
+
+ tx_info->skb = DMA_DUMMY_DATA;
+
+ return 0;
+}
+
+static void
+mt7921_tx_check_aggr(struct ieee80211_sta *sta, __le32 *txwi)
+{
+ struct mt7921_sta *msta;
+ u16 fc, tid;
+ u32 val;
+
+ if (!sta || !sta->ht_cap.ht_supported)
+ return;
+
+ tid = FIELD_GET(MT_TXD1_TID, le32_to_cpu(txwi[1]));
+ 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 mt7921_sta *)sta->drv_priv;
+ if (!test_and_set_bit(tid, &msta->ampdu_state))
+ ieee80211_start_tx_ba_session(sta, tid, 0);
+}
+
+static void
+mt7921_tx_complete_status(struct mt76_dev *mdev, struct sk_buff *skb,
+ struct ieee80211_sta *sta, u8 stat,
+ struct list_head *free_list)
+{
+ struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+ struct ieee80211_tx_status status = {
+ .sta = sta,
+ .info = info,
+ .skb = skb,
+ .free_list = free_list,
+ };
+ struct ieee80211_hw *hw;
+
+ if (sta) {
+ struct mt7921_sta *msta;
+
+ msta = (struct mt7921_sta *)sta->drv_priv;
+ status.rate = &msta->stats.tx_rate;
+ }
+
+ hw = mt76_tx_status_get_hw(mdev, skb);
+
+ if (info->flags & IEEE80211_TX_CTL_AMPDU)
+ info->flags |= IEEE80211_TX_STAT_AMPDU;
+
+ if (stat)
+ ieee80211_tx_info_clear_status(info);
+
+ if (!(info->flags & IEEE80211_TX_CTL_NO_ACK))
+ info->flags |= IEEE80211_TX_STAT_ACK;
+
+ info->status.tx_time = 0;
+ ieee80211_tx_status_ext(hw, &status);
+}
+
+void mt7921_txp_skb_unmap(struct mt76_dev *dev,
+ struct mt76_txwi_cache *t)
+{
+ struct mt7921_txp_common *txp;
+ int i;
+
+ txp = mt7921_txwi_to_txp(dev, t);
+
+ for (i = 0; i < ARRAY_SIZE(txp->hw.ptr); i++) {
+ struct mt7921_txp_ptr *ptr = &txp->hw.ptr[i];
+ bool last;
+ u16 len;
+
+ len = le16_to_cpu(ptr->len0);
+ last = len & MT_TXD_LEN_LAST;
+ len &= MT_TXD_LEN_MASK;
+ dma_unmap_single(dev->dev, le32_to_cpu(ptr->buf0), len,
+ DMA_TO_DEVICE);
+ if (last)
+ break;
+
+ len = le16_to_cpu(ptr->len1);
+ last = len & MT_TXD_LEN_LAST;
+ len &= MT_TXD_LEN_MASK;
+ dma_unmap_single(dev->dev, le32_to_cpu(ptr->buf1), len,
+ DMA_TO_DEVICE);
+ if (last)
+ break;
+ }
+}
+
+void mt7921_mac_tx_free(struct mt7921_dev *dev, struct sk_buff *skb)
+{
+ struct mt7921_tx_free *free = (struct mt7921_tx_free *)skb->data;
+ struct mt76_dev *mdev = &dev->mt76;
+ struct mt76_txwi_cache *txwi;
+ struct ieee80211_sta *sta = NULL;
+ LIST_HEAD(free_list);
+ struct sk_buff *tmp;
+ bool wake = false;
+ u8 i, count;
+
+ /* 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);
+
+ /* TODO: MT_TX_FREE_LATENCY is msdu time from the TXD is queued into PLE,
+ * to the time ack is received or dropped by hw (air + hw queue time).
+ * Should avoid accessing WTBL to get Tx airtime, and use it instead.
+ */
+ count = FIELD_GET(MT_TX_FREE_MSDU_CNT, le16_to_cpu(free->ctrl));
+ for (i = 0; i < count; i++) {
+ u32 msdu, info = le32_to_cpu(free->info[i]);
+ u8 stat;
+
+ /* 1'b1: new wcid pair.
+ * 1'b0: msdu_id with the same 'wcid pair' as above.
+ */
+ if (info & MT_TX_FREE_PAIR) {
+ struct mt7921_sta *msta;
+ struct mt7921_phy *phy;
+ struct mt76_wcid *wcid;
+ u16 idx;
+
+ count++;
+ idx = FIELD_GET(MT_TX_FREE_WLAN_ID, info);
+ wcid = rcu_dereference(dev->mt76.wcid[idx]);
+ sta = wcid_to_sta(wcid);
+ if (!sta)
+ continue;
+
+ msta = container_of(wcid, struct mt7921_sta, wcid);
+ phy = msta->vif->phy;
+ spin_lock_bh(&dev->sta_poll_lock);
+ if (list_empty(&msta->stats_list))
+ list_add_tail(&msta->stats_list, &phy->stats_list);
+ if (list_empty(&msta->poll_list))
+ list_add_tail(&msta->poll_list, &dev->sta_poll_list);
+ spin_unlock_bh(&dev->sta_poll_lock);
+ continue;
+ }
+
+ msdu = FIELD_GET(MT_TX_FREE_MSDU_ID, info);
+ stat = FIELD_GET(MT_TX_FREE_STATUS, info);
+
+ spin_lock_bh(&dev->token_lock);
+ txwi = idr_remove(&dev->token, msdu);
+ if (txwi)
+ dev->token_count--;
+ if (dev->token_count < MT7921_TOKEN_SIZE - MT7921_TOKEN_FREE_THR &&
+ dev->mphy.q_tx[0]->blocked)
+ wake = true;
+ spin_unlock_bh(&dev->token_lock);
+
+ if (!txwi)
+ continue;
+
+ mt7921_txp_skb_unmap(mdev, txwi);
+ if (txwi->skb) {
+ struct ieee80211_tx_info *info = IEEE80211_SKB_CB(txwi->skb);
+ void *txwi_ptr = mt76_get_txwi_ptr(mdev, txwi);
+
+ if (likely(txwi->skb->protocol != cpu_to_be16(ETH_P_PAE)))
+ mt7921_tx_check_aggr(sta, txwi_ptr);
+
+ if (sta && !info->tx_time_est) {
+ struct mt76_wcid *wcid = (struct mt76_wcid *)sta->drv_priv;
+ int pending;
+
+ pending = atomic_dec_return(&wcid->non_aql_packets);
+ if (pending < 0)
+ atomic_cmpxchg(&wcid->non_aql_packets, pending, 0);
+ }
+
+ mt7921_tx_complete_status(mdev, txwi->skb, sta, stat, &free_list);
+ txwi->skb = NULL;
+ }
+
+ mt76_put_txwi(mdev, txwi);
+ }
+
+ mt7921_mac_sta_poll(dev);
+
+ if (wake) {
+ spin_lock_bh(&dev->token_lock);
+ mt7921_set_tx_blocked(dev, false);
+ spin_unlock_bh(&dev->token_lock);
+ }
+
+ mt76_worker_schedule(&dev->mt76.tx_worker);
+
+ napi_consume_skb(skb, 1);
+
+ list_for_each_entry_safe(skb, tmp, &free_list, list) {
+ skb_list_del_init(skb);
+ napi_consume_skb(skb, 1);
+ }
+}
+
+void mt7921_tx_complete_skb(struct mt76_dev *mdev, struct mt76_queue_entry *e)
+{
+ struct mt7921_dev *dev;
+
+ if (!e->txwi) {
+ dev_kfree_skb_any(e->skb);
+ return;
+ }
+
+ dev = container_of(mdev, struct mt7921_dev, mt76);
+
+ /* error path */
+ if (e->skb == DMA_DUMMY_DATA) {
+ struct mt76_txwi_cache *t;
+ struct mt7921_txp_common *txp;
+ u16 token;
+
+ txp = mt7921_txwi_to_txp(mdev, e->txwi);
+
+ token = le16_to_cpu(txp->hw.msdu_id[0]) & ~MT_MSDU_ID_VALID;
+ spin_lock_bh(&dev->token_lock);
+ t = idr_remove(&dev->token, token);
+ spin_unlock_bh(&dev->token_lock);
+ e->skb = t ? t->skb : NULL;
+ }
+
+ if (e->skb) {
+ struct mt76_tx_cb *cb = mt76_tx_skb_cb(e->skb);
+ struct mt76_wcid *wcid;
+
+ wcid = rcu_dereference(dev->mt76.wcid[cb->wcid]);
+
+ mt7921_tx_complete_status(mdev, e->skb, wcid_to_sta(wcid), 0,
+ NULL);
+ }
+}
+
+void mt7921_mac_reset_counters(struct mt7921_phy *phy)
+{
+ struct mt7921_dev *dev = phy->dev;
+ int i;
+
+ for (i = 0; i < 4; i++) {
+ mt76_rr(dev, MT_TX_AGG_CNT(0, i));
+ mt76_rr(dev, MT_TX_AGG_CNT2(0, i));
+ }
+
+ dev->mt76.phy.survey_time = ktime_get_boottime();
+ memset(&dev->mt76.aggr_stats[0], 0, sizeof(dev->mt76.aggr_stats) / 2);
+
+ /* reset airtime counters */
+ mt76_rr(dev, MT_MIB_SDR9(0));
+ mt76_rr(dev, MT_MIB_SDR36(0));
+ mt76_rr(dev, MT_MIB_SDR37(0));
+
+ mt76_set(dev, MT_WF_RMAC_MIB_TIME0(0), MT_WF_RMAC_MIB_RXTIME_CLR);
+ mt76_set(dev, MT_WF_RMAC_MIB_AIRTIME0(0), MT_WF_RMAC_MIB_RXTIME_CLR);
+}
+
+void mt7921_mac_set_timing(struct mt7921_phy *phy)
+{
+ s16 coverage_class = phy->coverage_class;
+ struct mt7921_dev *dev = phy->dev;
+ u32 val, reg_offset;
+ u32 cck = FIELD_PREP(MT_TIMEOUT_VAL_PLCP, 231) |
+ FIELD_PREP(MT_TIMEOUT_VAL_CCA, 48);
+ u32 ofdm = FIELD_PREP(MT_TIMEOUT_VAL_PLCP, 60) |
+ FIELD_PREP(MT_TIMEOUT_VAL_CCA, 28);
+ int sifs, offset;
+ bool is_5ghz = phy->mt76->chandef.chan->band == NL80211_BAND_5GHZ;
+
+ if (!test_bit(MT76_STATE_RUNNING, &phy->mt76->state))
+ return;
+
+ if (is_5ghz)
+ sifs = 16;
+ else
+ sifs = 10;
+
+ mt76_set(dev, MT_ARB_SCR(0),
+ 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(0), cck + reg_offset);
+ mt76_wr(dev, MT_TMAC_ODTR(0), ofdm + reg_offset);
+ mt76_wr(dev, MT_TMAC_ICR0(0),
+ FIELD_PREP(MT_IFS_EIFS, 360) |
+ FIELD_PREP(MT_IFS_RIFS, 2) |
+ FIELD_PREP(MT_IFS_SIFS, sifs) |
+ FIELD_PREP(MT_IFS_SLOT, phy->slottime));
+
+ if (phy->slottime < 20 || is_5ghz)
+ val = MT7921_CFEND_RATE_DEFAULT;
+ else
+ val = MT7921_CFEND_RATE_11B;
+
+ mt76_rmw_field(dev, MT_AGG_ACR0(0), MT_AGG_ACR_CFEND_RATE, val);
+ mt76_clear(dev, MT_ARB_SCR(0),
+ MT_ARB_SCR_TX_DISABLE | MT_ARB_SCR_RX_DISABLE);
+}
+
+static u8
+mt7921_phy_get_nf(struct mt7921_phy *phy, int idx)
+{
+ return 0;
+}
+
+static void
+mt7921_phy_update_channel(struct mt76_phy *mphy, int idx)
+{
+ struct mt7921_dev *dev = container_of(mphy->dev, struct mt7921_dev, mt76);
+ struct mt7921_phy *phy = (struct mt7921_phy *)mphy->priv;
+ struct mt76_channel_state *state;
+ u64 busy_time, tx_time, rx_time, obss_time;
+ int nf;
+
+ busy_time = mt76_get_field(dev, MT_MIB_SDR9(idx),
+ MT_MIB_SDR9_BUSY_MASK);
+ tx_time = mt76_get_field(dev, MT_MIB_SDR36(idx),
+ MT_MIB_SDR36_TXTIME_MASK);
+ rx_time = mt76_get_field(dev, MT_MIB_SDR37(idx),
+ MT_MIB_SDR37_RXTIME_MASK);
+ obss_time = mt76_get_field(dev, MT_WF_RMAC_MIB_AIRTIME14(idx),
+ MT_MIB_OBSSTIME_MASK);
+
+ nf = mt7921_phy_get_nf(phy, idx);
+ if (!phy->noise)
+ phy->noise = nf << 4;
+ else if (nf)
+ phy->noise += nf - (phy->noise >> 4);
+
+ state = mphy->chan_state;
+ state->cc_busy += busy_time;
+ state->cc_tx += tx_time;
+ state->cc_rx += rx_time + obss_time;
+ state->cc_bss_rx += rx_time;
+ state->noise = -(phy->noise >> 4);
+}
+
+void mt7921_update_channel(struct mt76_dev *mdev)
+{
+ struct mt7921_dev *dev = container_of(mdev, struct mt7921_dev, mt76);
+
+ mt7921_phy_update_channel(&mdev->phy, 0);
+ /* reset obss airtime */
+ mt76_set(dev, MT_WF_RMAC_MIB_TIME0(0), MT_WF_RMAC_MIB_RXTIME_CLR);
+}
+
+static bool
+mt7921_wait_reset_state(struct mt7921_dev *dev, u32 state)
+{
+ bool ret;
+
+ ret = wait_event_timeout(dev->reset_wait,
+ (READ_ONCE(dev->reset_state) & state),
+ MT7921_RESET_TIMEOUT);
+
+ WARN(!ret, "Timeout waiting for MCU reset state %x\n", state);
+ return ret;
+}
+
+static void
+mt7921_dma_reset(struct mt7921_phy *phy)
+{
+ struct mt7921_dev *dev = phy->dev;
+ int i;
+
+ mt76_clear(dev, MT_WFDMA0_GLO_CFG,
+ MT_WFDMA0_GLO_CFG_TX_DMA_EN | MT_WFDMA0_GLO_CFG_RX_DMA_EN);
+
+ usleep_range(1000, 2000);
+
+ mt76_queue_tx_cleanup(dev, dev->mt76.q_mcu[MT_MCUQ_WA], true);
+ for (i = 0; i < __MT_TXQ_MAX; i++)
+ mt76_queue_tx_cleanup(dev, phy->mt76->q_tx[i], true);
+
+ mt76_for_each_q_rx(&dev->mt76, i) {
+ mt76_queue_rx_reset(dev, i);
+ }
+
+ mt76_set(dev, MT_WFDMA0_GLO_CFG,
+ MT_WFDMA0_GLO_CFG_TX_DMA_EN | MT_WFDMA0_GLO_CFG_RX_DMA_EN);
+}
+
+/* system error recovery */
+void mt7921_mac_reset_work(struct work_struct *work)
+{
+ struct mt7921_dev *dev;
+
+ dev = container_of(work, struct mt7921_dev, reset_work);
+
+ if (!(READ_ONCE(dev->reset_state) & MT_MCU_CMD_STOP_DMA))
+ return;
+
+ ieee80211_stop_queues(mt76_hw(dev));
+
+ 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->phy.mac_work);
+
+ /* lock/unlock all queues to ensure that no tx is pending */
+ mt76_txq_schedule_all(&dev->mphy);
+
+ mt76_worker_disable(&dev->mt76.tx_worker);
+ napi_disable(&dev->mt76.napi[0]);
+ napi_disable(&dev->mt76.napi[1]);
+ napi_disable(&dev->mt76.napi[2]);
+ 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 (mt7921_wait_reset_state(dev, MT_MCU_CMD_RESET_DONE)) {
+ mt7921_dma_reset(&dev->phy);
+
+ mt76_wr(dev, MT_MCU_INT_EVENT, MT_MCU_INT_EVENT_DMA_INIT);
+ mt7921_wait_reset_state(dev, MT_MCU_CMD_RECOVERY_DONE);
+ }
+
+ clear_bit(MT76_MCU_RESET, &dev->mphy.state);
+ clear_bit(MT76_RESET, &dev->mphy.state);
+
+ mt76_worker_enable(&dev->mt76.tx_worker);
+ napi_enable(&dev->mt76.tx_napi);
+ napi_schedule(&dev->mt76.tx_napi);
+
+ napi_enable(&dev->mt76.napi[0]);
+ napi_schedule(&dev->mt76.napi[0]);
+
+ napi_enable(&dev->mt76.napi[1]);
+ napi_schedule(&dev->mt76.napi[1]);
+
+ napi_enable(&dev->mt76.napi[2]);
+ napi_schedule(&dev->mt76.napi[2]);
+
+ ieee80211_wake_queues(mt76_hw(dev));
+
+ mt76_wr(dev, MT_MCU_INT_EVENT, MT_MCU_INT_EVENT_RESET_DONE);
+ mt7921_wait_reset_state(dev, MT_MCU_CMD_NORMAL_STATE);
+
+ mutex_unlock(&dev->mt76.mutex);
+
+ ieee80211_queue_delayed_work(mt76_hw(dev), &dev->phy.mac_work,
+ MT7921_WATCHDOG_TIME);
+}
+
+static void
+mt7921_mac_update_mib_stats(struct mt7921_phy *phy)
+{
+ struct mt7921_dev *dev = phy->dev;
+ struct mib_stats *mib = &phy->mib;
+ int i, aggr0 = 0, aggr1;
+
+ memset(mib, 0, sizeof(*mib));
+
+ mib->fcs_err_cnt = mt76_get_field(dev, MT_MIB_SDR3(0),
+ MT_MIB_SDR3_FCS_ERR_MASK);
+
+ for (i = 0, aggr1 = aggr0 + 4; i < 4; i++) {
+ u32 val, val2;
+
+ val = mt76_rr(dev, MT_MIB_MB_SDR1(0, i));
+
+ val2 = FIELD_GET(MT_MIB_ACK_FAIL_COUNT_MASK, val);
+ if (val2 > mib->ack_fail_cnt)
+ mib->ack_fail_cnt = val2;
+
+ val2 = FIELD_GET(MT_MIB_BA_MISS_COUNT_MASK, val);
+ if (val2 > mib->ba_miss_cnt)
+ mib->ba_miss_cnt = val2;
+
+ val = mt76_rr(dev, MT_MIB_MB_SDR0(0, i));
+ val2 = FIELD_GET(MT_MIB_RTS_RETRIES_COUNT_MASK, val);
+ if (val2 > mib->rts_retries_cnt) {
+ mib->rts_cnt = FIELD_GET(MT_MIB_RTS_COUNT_MASK, val);
+ mib->rts_retries_cnt = val2;
+ }
+
+ val = mt76_rr(dev, MT_TX_AGG_CNT(0, i));
+ val2 = mt76_rr(dev, MT_TX_AGG_CNT2(0, i));
+
+ dev->mt76.aggr_stats[aggr0++] += val & 0xffff;
+ dev->mt76.aggr_stats[aggr0++] += val >> 16;
+ dev->mt76.aggr_stats[aggr1++] += val2 & 0xffff;
+ dev->mt76.aggr_stats[aggr1++] += val2 >> 16;
+ }
+}
+
+static void
+mt7921_mac_sta_stats_work(struct mt7921_phy *phy)
+{
+ struct mt7921_dev *dev = phy->dev;
+ struct mt7921_sta *msta;
+ LIST_HEAD(list);
+
+ spin_lock_bh(&dev->sta_poll_lock);
+ list_splice_init(&phy->stats_list, &list);
+
+ while (!list_empty(&list)) {
+ msta = list_first_entry(&list, struct mt7921_sta, stats_list);
+ list_del_init(&msta->stats_list);
+ spin_unlock_bh(&dev->sta_poll_lock);
+
+ /* query wtbl info to report tx rate for further devices */
+ mt7921_get_wtbl_info(dev, msta->wcid.idx);
+
+ spin_lock_bh(&dev->sta_poll_lock);
+ }
+
+ spin_unlock_bh(&dev->sta_poll_lock);
+}
+
+void mt7921_mac_work(struct work_struct *work)
+{
+ struct mt7921_phy *phy;
+ struct mt76_dev *mdev;
+
+ phy = (struct mt7921_phy *)container_of(work, struct mt7921_phy,
+ mac_work.work);
+ mdev = &phy->dev->mt76;
+
+ mutex_lock(&mdev->mutex);
+
+ mt76_update_survey(mdev);
+ if (++phy->mac_work_count == 5) {
+ phy->mac_work_count = 0;
+
+ mt7921_mac_update_mib_stats(phy);
+ }
+ if (++phy->sta_work_count == 10) {
+ phy->sta_work_count = 0;
+ mt7921_mac_sta_stats_work(phy);
+ };
+
+ mutex_unlock(&mdev->mutex);
+
+ ieee80211_queue_delayed_work(phy->mt76->hw, &phy->mac_work,
+ MT7921_WATCHDOG_TIME);
+}