diff options
Diffstat (limited to 'drivers/net/wireless/mediatek/mt76/mt7615/mac.c')
| -rw-r--r-- | drivers/net/wireless/mediatek/mt76/mt7615/mac.c | 2371 |
1 files changed, 2371 insertions, 0 deletions
diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/mac.c b/drivers/net/wireless/mediatek/mt76/mt7615/mac.c new file mode 100644 index 0000000000..7ba789834e --- /dev/null +++ b/drivers/net/wireless/mediatek/mt76/mt7615/mac.c @@ -0,0 +1,2371 @@ +// SPDX-License-Identifier: ISC +/* Copyright (C) 2019 MediaTek Inc. + * + * Author: Ryder Lee <ryder.lee@mediatek.com> + * Roy Luo <royluo@google.com> + * Felix Fietkau <nbd@nbd.name> + * Lorenzo Bianconi <lorenzo@kernel.org> + */ + +#include <linux/devcoredump.h> +#include <linux/etherdevice.h> +#include <linux/timekeeping.h> +#include "mt7615.h" +#include "../trace.h" +#include "../dma.h" +#include "mt7615_trace.h" +#include "mac.h" +#include "mcu.h" + +#define to_rssi(field, rxv) ((FIELD_GET(field, rxv) - 220) / 2) + +static const struct mt7615_dfs_radar_spec etsi_radar_specs = { + .pulse_th = { 110, -10, -80, 40, 5200, 128, 5200 }, + .radar_pattern = { + [5] = { 1, 0, 6, 32, 28, 0, 17, 990, 5010, 1, 1 }, + [6] = { 1, 0, 9, 32, 28, 0, 27, 615, 5010, 1, 1 }, + [7] = { 1, 0, 15, 32, 28, 0, 27, 240, 445, 1, 1 }, + [8] = { 1, 0, 12, 32, 28, 0, 42, 240, 510, 1, 1 }, + [9] = { 1, 1, 0, 0, 0, 0, 14, 2490, 3343, 0, 0, 12, 32, 28 }, + [10] = { 1, 1, 0, 0, 0, 0, 14, 2490, 3343, 0, 0, 15, 32, 24 }, + [11] = { 1, 1, 0, 0, 0, 0, 14, 823, 2510, 0, 0, 18, 32, 28 }, + [12] = { 1, 1, 0, 0, 0, 0, 14, 823, 2510, 0, 0, 27, 32, 24 }, + }, +}; + +static const struct mt7615_dfs_radar_spec fcc_radar_specs = { + .pulse_th = { 110, -10, -80, 40, 5200, 128, 5200 }, + .radar_pattern = { + [0] = { 1, 0, 9, 32, 28, 0, 13, 508, 3076, 1, 1 }, + [1] = { 1, 0, 12, 32, 28, 0, 17, 140, 240, 1, 1 }, + [2] = { 1, 0, 8, 32, 28, 0, 22, 190, 510, 1, 1 }, + [3] = { 1, 0, 6, 32, 28, 0, 32, 190, 510, 1, 1 }, + [4] = { 1, 0, 9, 255, 28, 0, 13, 323, 343, 1, 32 }, + }, +}; + +static const struct mt7615_dfs_radar_spec jp_radar_specs = { + .pulse_th = { 110, -10, -80, 40, 5200, 128, 5200 }, + .radar_pattern = { + [0] = { 1, 0, 8, 32, 28, 0, 13, 508, 3076, 1, 1 }, + [1] = { 1, 0, 12, 32, 28, 0, 17, 140, 240, 1, 1 }, + [2] = { 1, 0, 8, 32, 28, 0, 22, 190, 510, 1, 1 }, + [3] = { 1, 0, 6, 32, 28, 0, 32, 190, 510, 1, 1 }, + [4] = { 1, 0, 9, 32, 28, 0, 13, 323, 343, 1, 32 }, + [13] = { 1, 0, 8, 32, 28, 0, 14, 3836, 3856, 1, 1 }, + [14] = { 1, 0, 8, 32, 28, 0, 14, 3990, 4010, 1, 1 }, + }, +}; + +static enum mt76_cipher_type +mt7615_mac_get_cipher(int cipher) +{ + switch (cipher) { + case WLAN_CIPHER_SUITE_WEP40: + return MT_CIPHER_WEP40; + case WLAN_CIPHER_SUITE_WEP104: + return MT_CIPHER_WEP104; + case WLAN_CIPHER_SUITE_TKIP: + return MT_CIPHER_TKIP; + case WLAN_CIPHER_SUITE_AES_CMAC: + return MT_CIPHER_BIP_CMAC_128; + case WLAN_CIPHER_SUITE_CCMP: + return MT_CIPHER_AES_CCMP; + case WLAN_CIPHER_SUITE_CCMP_256: + return MT_CIPHER_CCMP_256; + case WLAN_CIPHER_SUITE_GCMP: + return MT_CIPHER_GCMP; + case WLAN_CIPHER_SUITE_GCMP_256: + return MT_CIPHER_GCMP_256; + case WLAN_CIPHER_SUITE_SMS4: + return MT_CIPHER_WAPI; + default: + return MT_CIPHER_NONE; + } +} + +static struct mt76_wcid *mt7615_rx_get_wcid(struct mt7615_dev *dev, + u8 idx, bool unicast) +{ + struct mt7615_sta *sta; + struct mt76_wcid *wcid; + + if (idx >= MT7615_WTBL_SIZE) + return NULL; + + wcid = rcu_dereference(dev->mt76.wcid[idx]); + if (unicast || !wcid) + return wcid; + + if (!wcid->sta) + return NULL; + + sta = container_of(wcid, struct mt7615_sta, wcid); + if (!sta->vif) + return NULL; + + return &sta->vif->sta.wcid; +} + +void mt7615_mac_reset_counters(struct mt7615_phy *phy) +{ + struct mt7615_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_CNT(1, i)); + } + + memset(phy->mt76->aggr_stats, 0, sizeof(phy->mt76->aggr_stats)); + phy->mt76->survey_time = ktime_get_boottime(); + + /* reset airtime counters */ + mt76_rr(dev, MT_MIB_SDR9(0)); + mt76_rr(dev, MT_MIB_SDR9(1)); + + mt76_rr(dev, MT_MIB_SDR36(0)); + mt76_rr(dev, MT_MIB_SDR36(1)); + + mt76_rr(dev, MT_MIB_SDR37(0)); + mt76_rr(dev, MT_MIB_SDR37(1)); + + mt76_set(dev, MT_WF_RMAC_MIB_TIME0, MT_WF_RMAC_MIB_RXTIME_CLR); + mt76_set(dev, MT_WF_RMAC_MIB_AIRTIME0, MT_WF_RMAC_MIB_RXTIME_CLR); +} + +void mt7615_mac_set_timing(struct mt7615_phy *phy) +{ + s16 coverage_class = phy->coverage_class; + struct mt7615_dev *dev = phy->dev; + bool ext_phy = phy != &dev->phy; + 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; + + if (ext_phy) { + coverage_class = max_t(s16, dev->phy.coverage_class, + coverage_class); + mt76_set(dev, MT_ARB_SCR, + MT_ARB_SCR_TX1_DISABLE | MT_ARB_SCR_RX1_DISABLE); + } else { + struct mt7615_phy *phy_ext = mt7615_ext_phy(dev); + + if (phy_ext) + coverage_class = max_t(s16, phy_ext->coverage_class, + coverage_class); + mt76_set(dev, MT_ARB_SCR, + MT_ARB_SCR_TX0_DISABLE | MT_ARB_SCR_RX0_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, cck + reg_offset); + mt76_wr(dev, MT_TMAC_ODTR, ofdm + reg_offset); + + mt76_wr(dev, MT_TMAC_ICR(ext_phy), + 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 = MT7615_CFEND_RATE_DEFAULT; + else + val = MT7615_CFEND_RATE_11B; + + mt76_rmw_field(dev, MT_AGG_ACR(ext_phy), MT_AGG_ACR_CFEND_RATE, val); + if (ext_phy) + mt76_clear(dev, MT_ARB_SCR, + MT_ARB_SCR_TX1_DISABLE | MT_ARB_SCR_RX1_DISABLE); + else + mt76_clear(dev, MT_ARB_SCR, + MT_ARB_SCR_TX0_DISABLE | MT_ARB_SCR_RX0_DISABLE); + +} + +static void +mt7615_get_status_freq_info(struct mt7615_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); +} + +static void mt7615_mac_fill_tm_rx(struct mt7615_phy *phy, __le32 *rxv) +{ +#ifdef CONFIG_NL80211_TESTMODE + u32 rxv1 = le32_to_cpu(rxv[0]); + u32 rxv3 = le32_to_cpu(rxv[2]); + u32 rxv4 = le32_to_cpu(rxv[3]); + u32 rxv5 = le32_to_cpu(rxv[4]); + u8 cbw = FIELD_GET(MT_RXV1_FRAME_MODE, rxv1); + u8 mode = FIELD_GET(MT_RXV1_TX_MODE, rxv1); + s16 foe = FIELD_GET(MT_RXV5_FOE, rxv5); + u32 foe_const = (BIT(cbw + 1) & 0xf) * 10000; + + if (!mode) { + /* CCK */ + foe &= ~BIT(11); + foe *= 1000; + foe >>= 11; + } else { + if (foe > 2048) + foe -= 4096; + + foe = (foe * foe_const) >> 15; + } + + phy->test.last_freq_offset = foe; + phy->test.last_rcpi[0] = FIELD_GET(MT_RXV4_RCPI0, rxv4); + phy->test.last_rcpi[1] = FIELD_GET(MT_RXV4_RCPI1, rxv4); + phy->test.last_rcpi[2] = FIELD_GET(MT_RXV4_RCPI2, rxv4); + phy->test.last_rcpi[3] = FIELD_GET(MT_RXV4_RCPI3, rxv4); + phy->test.last_ib_rssi[0] = FIELD_GET(MT_RXV3_IB_RSSI, rxv3); + phy->test.last_wb_rssi[0] = FIELD_GET(MT_RXV3_WB_RSSI, rxv3); +#endif +} + +/* The HW does not translate the mac header to 802.3 for mesh point */ +static int mt7615_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 mt7615_sta *msta = (struct mt7615_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[1], MT_RXD1_NORMAL_ADDR_TYPE) != + MT_RXD1_NORMAL_U2M) + return -EINVAL; + + if (!(le32_to_cpu(rxd[0]) & MT_RXD0_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[4], MT_RXD4_FRAME_CONTROL); + hdr.frame_control = cpu_to_le16(frame_control); + hdr.seq_ctrl = cpu_to_le16(le32_get_bits(rxd[6], MT_RXD6_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: + break; + } + + 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[7], + IEEE80211_HT_CTL_LEN); + + if (ieee80211_is_data_qos(hdr.frame_control)) { + __le16 qos_ctrl; + + qos_ctrl = cpu_to_le16(le32_get_bits(rxd[6], MT_RXD6_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); + + status->flag &= ~(RX_FLAG_RADIOTAP_HE | RX_FLAG_RADIOTAP_HE_MU); + return 0; +} + +static int mt7615_mac_fill_rx(struct mt7615_dev *dev, struct sk_buff *skb) +{ + struct mt76_rx_status *status = (struct mt76_rx_status *)skb->cb; + struct mt76_phy *mphy = &dev->mt76.phy; + struct mt7615_phy *phy = &dev->phy; + struct ieee80211_supported_band *sband; + struct ieee80211_hdr *hdr; + struct mt7615_phy *phy2; + __le32 *rxd = (__le32 *)skb->data; + u32 rxd0 = le32_to_cpu(rxd[0]); + u32 rxd1 = le32_to_cpu(rxd[1]); + u32 rxd2 = le32_to_cpu(rxd[2]); + u32 csum_mask = MT_RXD0_NORMAL_IP_SUM | MT_RXD0_NORMAL_UDP_TCP_SUM; + u32 csum_status = *(u32 *)skb->cb; + bool unicast, hdr_trans, remove_pad, insert_ccmp_hdr = false; + u16 hdr_gap; + int phy_idx; + int i, idx; + u8 chfreq, amsdu_info, qos_ctl = 0; + u16 seq_ctrl = 0; + __le16 fc = 0; + + memset(status, 0, sizeof(*status)); + + chfreq = FIELD_GET(MT_RXD1_NORMAL_CH_FREQ, rxd1); + + phy2 = dev->mt76.phys[MT_BAND1] ? dev->mt76.phys[MT_BAND1]->priv : NULL; + if (!phy2) + phy_idx = 0; + else if (phy2->chfreq == phy->chfreq) + phy_idx = -1; + else if (phy->chfreq == chfreq) + phy_idx = 0; + else if (phy2->chfreq == chfreq) + phy_idx = 1; + else + phy_idx = -1; + + if (rxd2 & MT_RXD2_NORMAL_AMSDU_ERR) + return -EINVAL; + + hdr_trans = rxd1 & MT_RXD1_NORMAL_HDR_TRANS; + if (hdr_trans && (rxd2 & MT_RXD2_NORMAL_CM)) + return -EINVAL; + + /* ICV error or CCMP/BIP/WPI MIC error */ + if (rxd2 & MT_RXD2_NORMAL_ICV_ERR) + status->flag |= RX_FLAG_ONLY_MONITOR; + + unicast = (rxd1 & MT_RXD1_NORMAL_ADDR_TYPE) == MT_RXD1_NORMAL_U2M; + idx = FIELD_GET(MT_RXD2_NORMAL_WLAN_IDX, rxd2); + status->wcid = mt7615_rx_get_wcid(dev, idx, unicast); + + if (status->wcid) { + struct mt7615_sta *msta; + + msta = container_of(status->wcid, struct mt7615_sta, wcid); + spin_lock_bh(&dev->mt76.sta_poll_lock); + if (list_empty(&msta->wcid.poll_list)) + list_add_tail(&msta->wcid.poll_list, + &dev->mt76.sta_poll_list); + spin_unlock_bh(&dev->mt76.sta_poll_lock); + } + + if (mt76_is_mmio(&dev->mt76) && (rxd0 & csum_mask) == csum_mask && + !(csum_status & (BIT(0) | BIT(2) | BIT(3)))) + skb->ip_summed = CHECKSUM_UNNECESSARY; + + if (rxd2 & MT_RXD2_NORMAL_FCS_ERR) + status->flag |= RX_FLAG_FAILED_FCS_CRC; + + if (rxd2 & MT_RXD2_NORMAL_TKIP_MIC_ERR) + status->flag |= RX_FLAG_MMIC_ERROR; + + if (FIELD_GET(MT_RXD2_NORMAL_SEC_MODE, rxd2) != 0 && + !(rxd2 & (MT_RXD2_NORMAL_CLM | MT_RXD2_NORMAL_CM))) { + status->flag |= RX_FLAG_DECRYPTED; + status->flag |= RX_FLAG_IV_STRIPPED; + status->flag |= RX_FLAG_MMIC_STRIPPED | RX_FLAG_MIC_STRIPPED; + } + + remove_pad = rxd1 & MT_RXD1_NORMAL_HDR_OFFSET; + + if (rxd2 & MT_RXD2_NORMAL_MAX_LEN_ERROR) + return -EINVAL; + + rxd += 4; + if (rxd0 & MT_RXD0_NORMAL_GROUP_4) { + u32 v0 = le32_to_cpu(rxd[0]); + u32 v2 = le32_to_cpu(rxd[2]); + + fc = cpu_to_le16(FIELD_GET(MT_RXD4_FRAME_CONTROL, v0)); + qos_ctl = FIELD_GET(MT_RXD6_QOS_CTL, v2); + seq_ctrl = FIELD_GET(MT_RXD6_SEQ_CTRL, v2); + + rxd += 4; + if ((u8 *)rxd - skb->data >= skb->len) + return -EINVAL; + } + + if (rxd0 & MT_RXD0_NORMAL_GROUP_1) { + u8 *data = (u8 *)rxd; + + if (status->flag & RX_FLAG_DECRYPTED) { + 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 (rxd0 & MT_RXD0_NORMAL_GROUP_2) { + status->timestamp = le32_to_cpu(rxd[0]); + status->flag |= RX_FLAG_MACTIME_START; + + if (!(rxd2 & (MT_RXD2_NORMAL_NON_AMPDU_SUB | + 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; + } + + if (rxd0 & MT_RXD0_NORMAL_GROUP_3) { + u32 rxdg5 = le32_to_cpu(rxd[5]); + + /* + * If both PHYs are on the same channel and we don't have a WCID, + * we need to figure out which PHY this packet was received on. + * On the primary PHY, the noise value for the chains belonging to the + * second PHY will be set to the noise value of the last packet from + * that PHY. + */ + if (phy_idx < 0) { + int first_chain = ffs(phy2->mt76->chainmask) - 1; + + phy_idx = ((rxdg5 >> (first_chain * 8)) & 0xff) == 0; + } + } + + if (phy_idx == 1 && phy2) { + mphy = dev->mt76.phys[MT_BAND1]; + phy = phy2; + status->phy_idx = phy_idx; + } + + if (!mt7615_firmware_offload(dev) && chfreq != phy->chfreq) + return -EINVAL; + + mt7615_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 (!test_bit(MT76_STATE_RUNNING, &mphy->state)) + return -EINVAL; + + if (!sband->channels) + return -EINVAL; + + if (rxd0 & MT_RXD0_NORMAL_GROUP_3) { + u32 rxdg0 = le32_to_cpu(rxd[0]); + u32 rxdg1 = le32_to_cpu(rxd[1]); + u32 rxdg3 = le32_to_cpu(rxd[3]); + u8 stbc = FIELD_GET(MT_RXV1_HT_STBC, rxdg0); + bool cck = false; + + i = FIELD_GET(MT_RXV1_TX_RATE, rxdg0); + switch (FIELD_GET(MT_RXV1_TX_MODE, rxdg0)) { + case MT_PHY_TYPE_CCK: + cck = true; + 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_RXV2_NSTS, rxdg1) + 1; + status->encoding = RX_ENC_VHT; + break; + default: + return -EINVAL; + } + status->rate_idx = i; + + switch (FIELD_GET(MT_RXV1_FRAME_MODE, rxdg0)) { + case MT_PHY_BW_20: + break; + case MT_PHY_BW_40: + status->bw = RATE_INFO_BW_40; + break; + case MT_PHY_BW_80: + status->bw = RATE_INFO_BW_80; + break; + case MT_PHY_BW_160: + status->bw = RATE_INFO_BW_160; + break; + default: + return -EINVAL; + } + + if (rxdg0 & MT_RXV1_HT_SHORT_GI) + status->enc_flags |= RX_ENC_FLAG_SHORT_GI; + if (rxdg0 & MT_RXV1_HT_AD_CODE) + status->enc_flags |= RX_ENC_FLAG_LDPC; + + status->enc_flags |= RX_ENC_FLAG_STBC_MASK * stbc; + + status->chains = mphy->antenna_mask; + status->chain_signal[0] = to_rssi(MT_RXV4_RCPI0, rxdg3); + status->chain_signal[1] = to_rssi(MT_RXV4_RCPI1, rxdg3); + status->chain_signal[2] = to_rssi(MT_RXV4_RCPI2, rxdg3); + status->chain_signal[3] = to_rssi(MT_RXV4_RCPI3, rxdg3); + + mt7615_mac_fill_tm_rx(mphy->priv, rxd); + + rxd += 6; + if ((u8 *)rxd - skb->data >= skb->len) + return -EINVAL; + } + + amsdu_info = FIELD_GET(MT_RXD1_NORMAL_PAYLOAD_FORMAT, rxd1); + status->amsdu = !!amsdu_info; + if (status->amsdu) { + status->first_amsdu = amsdu_info == MT_RXD1_FIRST_AMSDU_FRAME; + status->last_amsdu = amsdu_info == MT_RXD1_LAST_AMSDU_FRAME; + } + + hdr_gap = (u8 *)rxd - skb->data + 2 * remove_pad; + if (hdr_trans && ieee80211_has_morefrags(fc)) { + if (mt7615_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. This happens either when the LLC-SNAP + * pattern did not match, or if a VLAN header was + * detected. + */ + pad_start = 12; + if (get_unaligned_be16(skb->data + pad_start) == ETH_P_8021Q) + pad_start += 4; + else + pad_start = 0; + } + + if (pad_start) { + memmove(skb->data + 2, skb->data, pad_start); + skb_pull(skb, 2); + } + } + + if (insert_ccmp_hdr && !hdr_trans) { + u8 key_id = FIELD_GET(MT_RXD1_NORMAL_KEY_ID, rxd1); + + mt76_insert_ccmp_hdr(skb, key_id); + } + + if (!hdr_trans) { + hdr = (struct ieee80211_hdr *)skb->data; + 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 (!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 u16 +mt7615_mac_tx_rate_val(struct mt7615_dev *dev, + struct mt76_phy *mphy, + const struct ieee80211_tx_rate *rate, + bool stbc, u8 *bw) +{ + u8 phy, nss, rate_idx; + u16 rateval = 0; + + *bw = 0; + + if (rate->flags & IEEE80211_TX_RC_VHT_MCS) { + rate_idx = ieee80211_rate_get_vht_mcs(rate); + nss = ieee80211_rate_get_vht_nss(rate); + phy = MT_PHY_TYPE_VHT; + if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH) + *bw = 1; + else if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH) + *bw = 2; + else if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH) + *bw = 3; + } else if (rate->flags & IEEE80211_TX_RC_MCS) { + rate_idx = rate->idx; + nss = 1 + (rate->idx >> 3); + phy = MT_PHY_TYPE_HT; + if (rate->flags & IEEE80211_TX_RC_GREEN_FIELD) + phy = MT_PHY_TYPE_HT_GF; + if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH) + *bw = 1; + } else { + const struct ieee80211_rate *r; + int band = mphy->chandef.chan->band; + u16 val; + + nss = 1; + r = &mphy->hw->wiphy->bands[band]->bitrates[rate->idx]; + if (rate->flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE) + val = r->hw_value_short; + else + val = r->hw_value; + + phy = val >> 8; + rate_idx = val & 0xff; + } + + if (stbc && nss == 1) { + nss++; + rateval |= MT_TX_RATE_STBC; + } + + rateval |= (FIELD_PREP(MT_TX_RATE_IDX, rate_idx) | + FIELD_PREP(MT_TX_RATE_MODE, phy) | + FIELD_PREP(MT_TX_RATE_NSS, nss - 1)); + + return rateval; +} + +int mt7615_mac_write_txwi(struct mt7615_dev *dev, __le32 *txwi, + struct sk_buff *skb, struct mt76_wcid *wcid, + struct ieee80211_sta *sta, int pid, + struct ieee80211_key_conf *key, + enum mt76_txq_id qid, bool beacon) +{ + struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; + u8 fc_type, fc_stype, p_fmt, q_idx, omac_idx = 0, wmm_idx = 0; + struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); + struct ieee80211_tx_rate *rate = &info->control.rates[0]; + u8 phy_idx = (info->hw_queue & MT_TX_HW_QUEUE_PHY) >> 2; + bool multicast = is_multicast_ether_addr(hdr->addr1); + struct ieee80211_vif *vif = info->control.vif; + bool is_mmio = mt76_is_mmio(&dev->mt76); + u32 val, sz_txd = is_mmio ? MT_TXD_SIZE : MT_USB_TXD_SIZE; + struct mt76_phy *mphy = &dev->mphy; + __le16 fc = hdr->frame_control; + int tx_count = 8; + u16 seqno = 0; + + if (vif) { + struct mt76_vif *mvif = (struct mt76_vif *)vif->drv_priv; + + omac_idx = mvif->omac_idx; + wmm_idx = mvif->wmm_idx; + } + + if (sta) { + struct mt7615_sta *msta = (struct mt7615_sta *)sta->drv_priv; + + tx_count = msta->rate_count; + } + + if (phy_idx && dev->mt76.phys[MT_BAND1]) + mphy = dev->mt76.phys[MT_BAND1]; + + fc_type = (le16_to_cpu(fc) & IEEE80211_FCTL_FTYPE) >> 2; + fc_stype = (le16_to_cpu(fc) & IEEE80211_FCTL_STYPE) >> 4; + + if (beacon) { + p_fmt = MT_TX_TYPE_FW; + q_idx = phy_idx ? MT_LMAC_BCN1 : MT_LMAC_BCN0; + } else if (qid >= MT_TXQ_PSD) { + p_fmt = is_mmio ? MT_TX_TYPE_CT : MT_TX_TYPE_SF; + q_idx = phy_idx ? MT_LMAC_ALTX1 : MT_LMAC_ALTX0; + } else { + p_fmt = is_mmio ? MT_TX_TYPE_CT : MT_TX_TYPE_SF; + q_idx = wmm_idx * MT7615_MAX_WMM_SETS + + mt7615_lmac_mapping(dev, skb_get_queue_mapping(skb)); + } + + val = FIELD_PREP(MT_TXD0_TX_BYTES, skb->len + sz_txd) | + FIELD_PREP(MT_TXD0_P_IDX, MT_TX_PORT_IDX_LMAC) | + FIELD_PREP(MT_TXD0_Q_IDX, q_idx); + txwi[0] = cpu_to_le32(val); + + val = MT_TXD1_LONG_FORMAT | + FIELD_PREP(MT_TXD1_WLAN_IDX, wcid->idx) | + FIELD_PREP(MT_TXD1_HDR_FORMAT, MT_HDR_FORMAT_802_11) | + FIELD_PREP(MT_TXD1_HDR_INFO, + ieee80211_get_hdrlen_from_skb(skb) / 2) | + FIELD_PREP(MT_TXD1_TID, + skb->priority & IEEE80211_QOS_CTL_TID_MASK) | + FIELD_PREP(MT_TXD1_PKT_FMT, p_fmt) | + FIELD_PREP(MT_TXD1_OWN_MAC, omac_idx); + txwi[1] = cpu_to_le32(val); + + val = FIELD_PREP(MT_TXD2_FRAME_TYPE, fc_type) | + FIELD_PREP(MT_TXD2_SUB_TYPE, fc_stype) | + FIELD_PREP(MT_TXD2_MULTICAST, multicast); + if (key) { + if (multicast && ieee80211_is_robust_mgmt_frame(skb) && + key->cipher == WLAN_CIPHER_SUITE_AES_CMAC) { + val |= MT_TXD2_BIP; + txwi[3] = 0; + } else { + txwi[3] = cpu_to_le32(MT_TXD3_PROTECT_FRAME); + } + } else { + txwi[3] = 0; + } + txwi[2] = cpu_to_le32(val); + + if (!(info->flags & IEEE80211_TX_CTL_AMPDU)) + txwi[2] |= cpu_to_le32(MT_TXD2_BA_DISABLE); + + txwi[4] = 0; + txwi[6] = 0; + + if (rate->idx >= 0 && rate->count && + !(info->flags & IEEE80211_TX_CTL_RATE_CTRL_PROBE)) { + bool stbc = info->flags & IEEE80211_TX_CTL_STBC; + u8 bw; + u16 rateval = mt7615_mac_tx_rate_val(dev, mphy, rate, stbc, + &bw); + + txwi[2] |= cpu_to_le32(MT_TXD2_FIX_RATE); + + val = MT_TXD6_FIXED_BW | + FIELD_PREP(MT_TXD6_BW, bw) | + FIELD_PREP(MT_TXD6_TX_RATE, rateval); + txwi[6] |= cpu_to_le32(val); + + if (rate->flags & IEEE80211_TX_RC_SHORT_GI) + txwi[6] |= cpu_to_le32(MT_TXD6_SGI); + + if (info->flags & IEEE80211_TX_CTL_LDPC) + txwi[6] |= cpu_to_le32(MT_TXD6_LDPC); + + if (!(rate->flags & (IEEE80211_TX_RC_MCS | + IEEE80211_TX_RC_VHT_MCS))) + txwi[2] |= cpu_to_le32(MT_TXD2_BA_DISABLE); + + tx_count = rate->count; + } + + if (!ieee80211_is_beacon(fc)) { + struct ieee80211_hw *hw = mt76_hw(dev); + + val = MT_TXD5_TX_STATUS_HOST | FIELD_PREP(MT_TXD5_PID, pid); + if (!ieee80211_hw_check(hw, SUPPORTS_PS)) + val |= MT_TXD5_SW_POWER_MGMT; + txwi[5] = cpu_to_le32(val); + } else { + txwi[5] = 0; + /* use maximum tx count for beacons */ + tx_count = 0x1f; + } + + val = FIELD_PREP(MT_TXD3_REM_TX_COUNT, tx_count); + if (info->flags & IEEE80211_TX_CTL_INJECTED) { + 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); + + if (info->flags & IEEE80211_TX_CTL_NO_ACK) + txwi[3] |= cpu_to_le32(MT_TXD3_NO_ACK); + + val = FIELD_PREP(MT_TXD7_TYPE, fc_type) | + FIELD_PREP(MT_TXD7_SUB_TYPE, fc_stype) | + FIELD_PREP(MT_TXD7_SPE_IDX, 0x18); + txwi[7] = cpu_to_le32(val); + if (!is_mmio) { + val = FIELD_PREP(MT_TXD8_L_TYPE, fc_type) | + FIELD_PREP(MT_TXD8_L_SUB_TYPE, fc_stype); + txwi[8] = cpu_to_le32(val); + } + + return 0; +} +EXPORT_SYMBOL_GPL(mt7615_mac_write_txwi); + +bool mt7615_mac_wtbl_update(struct mt7615_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); +} + +void mt7615_mac_sta_poll(struct mt7615_dev *dev) +{ + static const u8 ac_to_tid[4] = { + [IEEE80211_AC_BE] = 0, + [IEEE80211_AC_BK] = 1, + [IEEE80211_AC_VI] = 4, + [IEEE80211_AC_VO] = 6 + }; + static const u8 hw_queue_map[] = { + [IEEE80211_AC_BK] = 0, + [IEEE80211_AC_BE] = 1, + [IEEE80211_AC_VI] = 2, + [IEEE80211_AC_VO] = 3, + }; + struct ieee80211_sta *sta; + struct mt7615_sta *msta; + u32 addr, tx_time[4], rx_time[4]; + struct list_head sta_poll_list; + int i; + + INIT_LIST_HEAD(&sta_poll_list); + spin_lock_bh(&dev->mt76.sta_poll_lock); + list_splice_init(&dev->mt76.sta_poll_list, &sta_poll_list); + spin_unlock_bh(&dev->mt76.sta_poll_lock); + + while (!list_empty(&sta_poll_list)) { + bool clear = false; + + msta = list_first_entry(&sta_poll_list, struct mt7615_sta, + wcid.poll_list); + + spin_lock_bh(&dev->mt76.sta_poll_lock); + list_del_init(&msta->wcid.poll_list); + spin_unlock_bh(&dev->mt76.sta_poll_lock); + + addr = mt7615_mac_wtbl_addr(dev, msta->wcid.idx) + 19 * 4; + + for (i = 0; i < 4; i++, addr += 8) { + 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; + } + + if (clear) { + mt7615_mac_wtbl_update(dev, msta->wcid.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 < 4; i++) { + u32 tx_cur = tx_time[i]; + u32 rx_cur = rx_time[hw_queue_map[i]]; + u8 tid = ac_to_tid[i]; + + if (!tx_cur && !rx_cur) + continue; + + ieee80211_sta_register_airtime(sta, tid, tx_cur, + rx_cur); + } + } +} +EXPORT_SYMBOL_GPL(mt7615_mac_sta_poll); + +static void +mt7615_mac_update_rate_desc(struct mt7615_phy *phy, struct mt7615_sta *sta, + struct ieee80211_tx_rate *probe_rate, + struct ieee80211_tx_rate *rates, + struct mt7615_rate_desc *rd) +{ + struct mt7615_dev *dev = phy->dev; + struct mt76_phy *mphy = phy->mt76; + struct ieee80211_tx_rate *ref; + bool rateset, stbc = false; + int n_rates = sta->n_rates; + u8 bw, bw_prev; + int i, j; + + for (i = n_rates; i < 4; i++) + rates[i] = rates[n_rates - 1]; + + rateset = !(sta->rate_set_tsf & BIT(0)); + memcpy(sta->rateset[rateset].rates, rates, + sizeof(sta->rateset[rateset].rates)); + if (probe_rate) { + sta->rateset[rateset].probe_rate = *probe_rate; + ref = &sta->rateset[rateset].probe_rate; + } else { + sta->rateset[rateset].probe_rate.idx = -1; + ref = &sta->rateset[rateset].rates[0]; + } + + rates = sta->rateset[rateset].rates; + for (i = 0; i < ARRAY_SIZE(sta->rateset[rateset].rates); i++) { + /* + * We don't support switching between short and long GI + * within the rate set. For accurate tx status reporting, we + * need to make sure that flags match. + * For improved performance, avoid duplicate entries by + * decrementing the MCS index if necessary + */ + if ((ref->flags ^ rates[i].flags) & IEEE80211_TX_RC_SHORT_GI) + rates[i].flags ^= IEEE80211_TX_RC_SHORT_GI; + + for (j = 0; j < i; j++) { + if (rates[i].idx != rates[j].idx) + continue; + if ((rates[i].flags ^ rates[j].flags) & + (IEEE80211_TX_RC_40_MHZ_WIDTH | + IEEE80211_TX_RC_80_MHZ_WIDTH | + IEEE80211_TX_RC_160_MHZ_WIDTH)) + continue; + + if (!rates[i].idx) + continue; + + rates[i].idx--; + } + } + + rd->val[0] = mt7615_mac_tx_rate_val(dev, mphy, &rates[0], stbc, &bw); + bw_prev = bw; + + if (probe_rate) { + rd->probe_val = mt7615_mac_tx_rate_val(dev, mphy, probe_rate, + stbc, &bw); + if (bw) + rd->bw_idx = 1; + else + bw_prev = 0; + } else { + rd->probe_val = rd->val[0]; + } + + rd->val[1] = mt7615_mac_tx_rate_val(dev, mphy, &rates[1], stbc, &bw); + if (bw_prev) { + rd->bw_idx = 3; + bw_prev = bw; + } + + rd->val[2] = mt7615_mac_tx_rate_val(dev, mphy, &rates[2], stbc, &bw); + if (bw_prev) { + rd->bw_idx = 5; + bw_prev = bw; + } + + rd->val[3] = mt7615_mac_tx_rate_val(dev, mphy, &rates[3], stbc, &bw); + if (bw_prev) + rd->bw_idx = 7; + + rd->rateset = rateset; + rd->bw = bw; +} + +static int +mt7615_mac_queue_rate_update(struct mt7615_phy *phy, struct mt7615_sta *sta, + struct ieee80211_tx_rate *probe_rate, + struct ieee80211_tx_rate *rates) +{ + struct mt7615_dev *dev = phy->dev; + struct mt7615_wtbl_rate_desc *wrd; + + if (work_pending(&dev->rate_work)) + return -EBUSY; + + wrd = kzalloc(sizeof(*wrd), GFP_ATOMIC); + if (!wrd) + return -ENOMEM; + + wrd->sta = sta; + mt7615_mac_update_rate_desc(phy, sta, probe_rate, rates, + &wrd->rate); + list_add_tail(&wrd->node, &dev->wrd_head); + queue_work(dev->mt76.wq, &dev->rate_work); + + return 0; +} + +u32 mt7615_mac_get_sta_tid_sn(struct mt7615_dev *dev, int wcid, u8 tid) +{ + u32 addr, val, val2; + u8 offset; + + addr = mt7615_mac_wtbl_addr(dev, wcid) + 11 * 4; + + offset = tid * 12; + addr += 4 * (offset / 32); + offset %= 32; + + val = mt76_rr(dev, addr); + val >>= offset; + + if (offset > 20) { + addr += 4; + val2 = mt76_rr(dev, addr); + val |= val2 << (32 - offset); + } + + return val & GENMASK(11, 0); +} + +void mt7615_mac_set_rates(struct mt7615_phy *phy, struct mt7615_sta *sta, + struct ieee80211_tx_rate *probe_rate, + struct ieee80211_tx_rate *rates) +{ + int wcid = sta->wcid.idx, n_rates = sta->n_rates; + struct mt7615_dev *dev = phy->dev; + struct mt7615_rate_desc rd; + u32 w5, w27, addr; + u16 idx = sta->vif->mt76.omac_idx; + + if (!mt76_is_mmio(&dev->mt76)) { + mt7615_mac_queue_rate_update(phy, sta, probe_rate, rates); + return; + } + + if (!mt76_poll(dev, MT_WTBL_UPDATE, MT_WTBL_UPDATE_BUSY, 0, 5000)) + return; + + memset(&rd, 0, sizeof(struct mt7615_rate_desc)); + mt7615_mac_update_rate_desc(phy, sta, probe_rate, rates, &rd); + + addr = mt7615_mac_wtbl_addr(dev, wcid); + w27 = mt76_rr(dev, addr + 27 * 4); + w27 &= ~MT_WTBL_W27_CC_BW_SEL; + w27 |= FIELD_PREP(MT_WTBL_W27_CC_BW_SEL, rd.bw); + + w5 = mt76_rr(dev, addr + 5 * 4); + w5 &= ~(MT_WTBL_W5_BW_CAP | MT_WTBL_W5_CHANGE_BW_RATE | + MT_WTBL_W5_MPDU_OK_COUNT | + MT_WTBL_W5_MPDU_FAIL_COUNT | + MT_WTBL_W5_RATE_IDX); + w5 |= FIELD_PREP(MT_WTBL_W5_BW_CAP, rd.bw) | + FIELD_PREP(MT_WTBL_W5_CHANGE_BW_RATE, + rd.bw_idx ? rd.bw_idx - 1 : 7); + + mt76_wr(dev, MT_WTBL_RIUCR0, w5); + + mt76_wr(dev, MT_WTBL_RIUCR1, + FIELD_PREP(MT_WTBL_RIUCR1_RATE0, rd.probe_val) | + FIELD_PREP(MT_WTBL_RIUCR1_RATE1, rd.val[0]) | + FIELD_PREP(MT_WTBL_RIUCR1_RATE2_LO, rd.val[1])); + + mt76_wr(dev, MT_WTBL_RIUCR2, + FIELD_PREP(MT_WTBL_RIUCR2_RATE2_HI, rd.val[1] >> 8) | + FIELD_PREP(MT_WTBL_RIUCR2_RATE3, rd.val[1]) | + FIELD_PREP(MT_WTBL_RIUCR2_RATE4, rd.val[2]) | + FIELD_PREP(MT_WTBL_RIUCR2_RATE5_LO, rd.val[2])); + + mt76_wr(dev, MT_WTBL_RIUCR3, + FIELD_PREP(MT_WTBL_RIUCR3_RATE5_HI, rd.val[2] >> 4) | + FIELD_PREP(MT_WTBL_RIUCR3_RATE6, rd.val[3]) | + FIELD_PREP(MT_WTBL_RIUCR3_RATE7, rd.val[3])); + + mt76_wr(dev, MT_WTBL_UPDATE, + FIELD_PREP(MT_WTBL_UPDATE_WLAN_IDX, wcid) | + MT_WTBL_UPDATE_RATE_UPDATE | + MT_WTBL_UPDATE_TX_COUNT_CLEAR); + + mt76_wr(dev, addr + 27 * 4, w27); + + idx = idx > HW_BSSID_MAX ? HW_BSSID_0 : idx; + addr = idx > 1 ? MT_LPON_TCR2(idx): MT_LPON_TCR0(idx); + + mt76_rmw(dev, addr, MT_LPON_TCR_MODE, MT_LPON_TCR_READ); /* TSF read */ + sta->rate_set_tsf = mt76_rr(dev, MT_LPON_UTTR0) & ~BIT(0); + sta->rate_set_tsf |= rd.rateset; + + if (!(sta->wcid.tx_info & MT_WCID_TX_INFO_SET)) + mt76_poll(dev, MT_WTBL_UPDATE, MT_WTBL_UPDATE_BUSY, 0, 5000); + + sta->rate_count = 2 * MT7615_RATE_RETRY * n_rates; + sta->wcid.tx_info |= MT_WCID_TX_INFO_SET; + sta->rate_probe = !!probe_rate; +} +EXPORT_SYMBOL_GPL(mt7615_mac_set_rates); + +void mt7615_mac_enable_rtscts(struct mt7615_dev *dev, + struct ieee80211_vif *vif, bool enable) +{ + struct mt7615_vif *mvif = (struct mt7615_vif *)vif->drv_priv; + u32 addr; + + addr = mt7615_mac_wtbl_addr(dev, mvif->sta.wcid.idx) + 3 * 4; + + if (enable) + mt76_set(dev, addr, MT_WTBL_W3_RTS); + else + mt76_clear(dev, addr, MT_WTBL_W3_RTS); +} +EXPORT_SYMBOL_GPL(mt7615_mac_enable_rtscts); + +static int +mt7615_mac_wtbl_update_key(struct mt7615_dev *dev, struct mt76_wcid *wcid, + struct ieee80211_key_conf *key, + enum mt76_cipher_type cipher, u16 cipher_mask) +{ + u32 addr = mt7615_mac_wtbl_addr(dev, wcid->idx) + 30 * 4; + u8 data[32] = {}; + + if (key->keylen > sizeof(data)) + return -EINVAL; + + mt76_rr_copy(dev, addr, data, sizeof(data)); + if (cipher == MT_CIPHER_TKIP) { + /* Rx/Tx MIC keys are swapped */ + memcpy(data, key->key, 16); + memcpy(data + 16, key->key + 24, 8); + memcpy(data + 24, key->key + 16, 8); + } else { + if (cipher_mask == BIT(cipher)) + memcpy(data, key->key, key->keylen); + else if (cipher != MT_CIPHER_BIP_CMAC_128) + memcpy(data, key->key, 16); + if (cipher == MT_CIPHER_BIP_CMAC_128) + memcpy(data + 16, key->key, 16); + } + + mt76_wr_copy(dev, addr, data, sizeof(data)); + + return 0; +} + +static int +mt7615_mac_wtbl_update_pk(struct mt7615_dev *dev, struct mt76_wcid *wcid, + enum mt76_cipher_type cipher, u16 cipher_mask, + int keyidx) +{ + u32 addr = mt7615_mac_wtbl_addr(dev, wcid->idx), w0, w1; + + if (!mt76_poll(dev, MT_WTBL_UPDATE, MT_WTBL_UPDATE_BUSY, 0, 5000)) + return -ETIMEDOUT; + + w0 = mt76_rr(dev, addr); + w1 = mt76_rr(dev, addr + 4); + + if (cipher_mask) + w0 |= MT_WTBL_W0_RX_KEY_VALID; + else + w0 &= ~(MT_WTBL_W0_RX_KEY_VALID | MT_WTBL_W0_KEY_IDX); + if (cipher_mask & BIT(MT_CIPHER_BIP_CMAC_128)) + w0 |= MT_WTBL_W0_RX_IK_VALID; + else + w0 &= ~MT_WTBL_W0_RX_IK_VALID; + + if (cipher != MT_CIPHER_BIP_CMAC_128 || cipher_mask == BIT(cipher)) { + w0 &= ~MT_WTBL_W0_KEY_IDX; + w0 |= FIELD_PREP(MT_WTBL_W0_KEY_IDX, keyidx); + } + + mt76_wr(dev, MT_WTBL_RICR0, w0); + mt76_wr(dev, MT_WTBL_RICR1, w1); + + if (!mt7615_mac_wtbl_update(dev, wcid->idx, + MT_WTBL_UPDATE_RXINFO_UPDATE)) + return -ETIMEDOUT; + + return 0; +} + +static void +mt7615_mac_wtbl_update_cipher(struct mt7615_dev *dev, struct mt76_wcid *wcid, + enum mt76_cipher_type cipher, u16 cipher_mask) +{ + u32 addr = mt7615_mac_wtbl_addr(dev, wcid->idx); + + if (cipher == MT_CIPHER_BIP_CMAC_128 && + cipher_mask & ~BIT(MT_CIPHER_BIP_CMAC_128)) + return; + + mt76_rmw(dev, addr + 2 * 4, MT_WTBL_W2_KEY_TYPE, + FIELD_PREP(MT_WTBL_W2_KEY_TYPE, cipher)); +} + +int __mt7615_mac_wtbl_set_key(struct mt7615_dev *dev, + struct mt76_wcid *wcid, + struct ieee80211_key_conf *key) +{ + enum mt76_cipher_type cipher; + u16 cipher_mask = wcid->cipher; + int err; + + cipher = mt7615_mac_get_cipher(key->cipher); + if (cipher == MT_CIPHER_NONE) + return -EOPNOTSUPP; + + cipher_mask |= BIT(cipher); + mt7615_mac_wtbl_update_cipher(dev, wcid, cipher, cipher_mask); + err = mt7615_mac_wtbl_update_key(dev, wcid, key, cipher, cipher_mask); + if (err < 0) + return err; + + err = mt7615_mac_wtbl_update_pk(dev, wcid, cipher, cipher_mask, + key->keyidx); + if (err < 0) + return err; + + wcid->cipher = cipher_mask; + + return 0; +} + +int mt7615_mac_wtbl_set_key(struct mt7615_dev *dev, + struct mt76_wcid *wcid, + struct ieee80211_key_conf *key) +{ + int err; + + spin_lock_bh(&dev->mt76.lock); + err = __mt7615_mac_wtbl_set_key(dev, wcid, key); + spin_unlock_bh(&dev->mt76.lock); + + return err; +} + +static bool mt7615_fill_txs(struct mt7615_dev *dev, struct mt7615_sta *sta, + struct ieee80211_tx_info *info, __le32 *txs_data) +{ + struct ieee80211_supported_band *sband; + struct mt7615_rate_set *rs; + struct mt76_phy *mphy; + int first_idx = 0, last_idx; + int i, idx, count; + bool fixed_rate, ack_timeout; + bool ampdu, cck = false; + bool rs_idx; + u32 rate_set_tsf; + u32 final_rate, final_rate_flags, final_nss, txs; + + txs = le32_to_cpu(txs_data[1]); + ampdu = txs & MT_TXS1_AMPDU; + + txs = le32_to_cpu(txs_data[3]); + count = FIELD_GET(MT_TXS3_TX_COUNT, txs); + last_idx = FIELD_GET(MT_TXS3_LAST_TX_RATE, txs); + + txs = le32_to_cpu(txs_data[0]); + fixed_rate = txs & MT_TXS0_FIXED_RATE; + final_rate = FIELD_GET(MT_TXS0_TX_RATE, txs); + ack_timeout = txs & MT_TXS0_ACK_TIMEOUT; + + if (!ampdu && (txs & MT_TXS0_RTS_TIMEOUT)) + return false; + + if (txs & MT_TXS0_QUEUE_TIMEOUT) + return false; + + if (!ack_timeout) + info->flags |= IEEE80211_TX_STAT_ACK; + + info->status.ampdu_len = 1; + info->status.ampdu_ack_len = !!(info->flags & + IEEE80211_TX_STAT_ACK); + + if (ampdu || (info->flags & IEEE80211_TX_CTL_AMPDU)) + info->flags |= IEEE80211_TX_STAT_AMPDU | IEEE80211_TX_CTL_AMPDU; + + first_idx = max_t(int, 0, last_idx - (count - 1) / MT7615_RATE_RETRY); + + if (fixed_rate) { + info->status.rates[0].count = count; + i = 0; + goto out; + } + + rate_set_tsf = READ_ONCE(sta->rate_set_tsf); + rs_idx = !((u32)(le32_get_bits(txs_data[4], MT_TXS4_F0_TIMESTAMP) - + rate_set_tsf) < 1000000); + rs_idx ^= rate_set_tsf & BIT(0); + rs = &sta->rateset[rs_idx]; + + if (!first_idx && rs->probe_rate.idx >= 0) { + info->status.rates[0] = rs->probe_rate; + + spin_lock_bh(&dev->mt76.lock); + if (sta->rate_probe) { + struct mt7615_phy *phy = &dev->phy; + + if (sta->wcid.phy_idx && dev->mt76.phys[MT_BAND1]) + phy = dev->mt76.phys[MT_BAND1]->priv; + + mt7615_mac_set_rates(phy, sta, NULL, sta->rates); + } + spin_unlock_bh(&dev->mt76.lock); + } else { + info->status.rates[0] = rs->rates[first_idx / 2]; + } + info->status.rates[0].count = 0; + + for (i = 0, idx = first_idx; count && idx <= last_idx; idx++) { + struct ieee80211_tx_rate *cur_rate; + int cur_count; + + cur_rate = &rs->rates[idx / 2]; + cur_count = min_t(int, MT7615_RATE_RETRY, count); + count -= cur_count; + + if (idx && (cur_rate->idx != info->status.rates[i].idx || + cur_rate->flags != info->status.rates[i].flags)) { + i++; + if (i == ARRAY_SIZE(info->status.rates)) { + i--; + break; + } + + info->status.rates[i] = *cur_rate; + info->status.rates[i].count = 0; + } + + info->status.rates[i].count += cur_count; + } + +out: + final_rate_flags = info->status.rates[i].flags; + + switch (FIELD_GET(MT_TX_RATE_MODE, final_rate)) { + case MT_PHY_TYPE_CCK: + cck = true; + fallthrough; + case MT_PHY_TYPE_OFDM: + mphy = &dev->mphy; + if (sta->wcid.phy_idx && dev->mt76.phys[MT_BAND1]) + mphy = dev->mt76.phys[MT_BAND1]; + + if (mphy->chandef.chan->band == NL80211_BAND_5GHZ) + sband = &mphy->sband_5g.sband; + else + sband = &mphy->sband_2g.sband; + final_rate &= MT_TX_RATE_IDX; + final_rate = mt76_get_rate(&dev->mt76, sband, final_rate, + cck); + final_rate_flags = 0; + break; + case MT_PHY_TYPE_HT_GF: + case MT_PHY_TYPE_HT: + final_rate_flags |= IEEE80211_TX_RC_MCS; + final_rate &= MT_TX_RATE_IDX; + if (final_rate > 31) + return false; + break; + case MT_PHY_TYPE_VHT: + final_nss = FIELD_GET(MT_TX_RATE_NSS, final_rate); + + if ((final_rate & MT_TX_RATE_STBC) && final_nss) + final_nss--; + + final_rate_flags |= IEEE80211_TX_RC_VHT_MCS; + final_rate = (final_rate & MT_TX_RATE_IDX) | (final_nss << 4); + break; + default: + return false; + } + + info->status.rates[i].idx = final_rate; + info->status.rates[i].flags = final_rate_flags; + + return true; +} + +static bool mt7615_mac_add_txs_skb(struct mt7615_dev *dev, + struct mt7615_sta *sta, int pid, + __le32 *txs_data) +{ + struct mt76_dev *mdev = &dev->mt76; + struct sk_buff_head list; + struct sk_buff *skb; + + if (pid < MT_PACKET_ID_FIRST) + return false; + + trace_mac_txdone(mdev, sta->wcid.idx, pid); + + mt76_tx_status_lock(mdev, &list); + skb = mt76_tx_status_skb_get(mdev, &sta->wcid, pid, &list); + if (skb) { + struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); + + if (!mt7615_fill_txs(dev, sta, info, txs_data)) { + info->status.rates[0].count = 0; + info->status.rates[0].idx = -1; + } + + mt76_tx_status_skb_done(mdev, skb, &list); + } + mt76_tx_status_unlock(mdev, &list); + + return !!skb; +} + +static void mt7615_mac_add_txs(struct mt7615_dev *dev, void *data) +{ + struct ieee80211_tx_info info = {}; + struct ieee80211_sta *sta = NULL; + struct mt7615_sta *msta = NULL; + struct mt76_wcid *wcid; + struct mt76_phy *mphy = &dev->mt76.phy; + __le32 *txs_data = data; + u8 wcidx; + u8 pid; + + pid = le32_get_bits(txs_data[0], MT_TXS0_PID); + wcidx = le32_get_bits(txs_data[2], MT_TXS2_WCID); + + if (pid == MT_PACKET_ID_NO_ACK) + return; + + if (wcidx >= MT7615_WTBL_SIZE) + return; + + rcu_read_lock(); + + wcid = rcu_dereference(dev->mt76.wcid[wcidx]); + if (!wcid) + goto out; + + msta = container_of(wcid, struct mt7615_sta, wcid); + sta = wcid_to_sta(wcid); + + spin_lock_bh(&dev->mt76.sta_poll_lock); + if (list_empty(&msta->wcid.poll_list)) + list_add_tail(&msta->wcid.poll_list, &dev->mt76.sta_poll_list); + spin_unlock_bh(&dev->mt76.sta_poll_lock); + + if (mt7615_mac_add_txs_skb(dev, msta, pid, txs_data)) + goto out; + + if (wcidx >= MT7615_WTBL_STA || !sta) + goto out; + + if (wcid->phy_idx && dev->mt76.phys[MT_BAND1]) + mphy = dev->mt76.phys[MT_BAND1]; + + if (mt7615_fill_txs(dev, msta, &info, txs_data)) { + spin_lock_bh(&dev->mt76.rx_lock); + ieee80211_tx_status_noskb(mphy->hw, sta, &info); + spin_unlock_bh(&dev->mt76.rx_lock); + } + +out: + rcu_read_unlock(); +} + +static void +mt7615_txwi_free(struct mt7615_dev *dev, struct mt76_txwi_cache *txwi) +{ + struct mt76_dev *mdev = &dev->mt76; + __le32 *txwi_data; + u32 val; + u8 wcid; + + mt76_connac_txp_skb_unmap(mdev, txwi); + if (!txwi->skb) + goto out; + + txwi_data = (__le32 *)mt76_get_txwi_ptr(mdev, txwi); + val = le32_to_cpu(txwi_data[1]); + wcid = FIELD_GET(MT_TXD1_WLAN_IDX, val); + mt76_tx_complete_skb(mdev, wcid, txwi->skb); + +out: + txwi->skb = NULL; + mt76_put_txwi(mdev, txwi); +} + +static void +mt7615_mac_tx_free_token(struct mt7615_dev *dev, u16 token) +{ + struct mt76_dev *mdev = &dev->mt76; + struct mt76_txwi_cache *txwi; + + trace_mac_tx_free(dev, token); + txwi = mt76_token_put(mdev, token); + if (!txwi) + return; + + mt7615_txwi_free(dev, txwi); +} + +static void mt7615_mac_tx_free(struct mt7615_dev *dev, void *data, int len) +{ + struct mt76_connac_tx_free *free = data; + void *tx_token = data + sizeof(*free); + void *end = data + len; + u8 i, count; + + mt76_queue_tx_cleanup(dev, dev->mphy.q_tx[MT_TXQ_PSD], false); + if (is_mt7615(&dev->mt76)) { + mt76_queue_tx_cleanup(dev, dev->mphy.q_tx[MT_TXQ_BE], false); + } else { + for (i = 0; i < IEEE80211_NUM_ACS; i++) + mt76_queue_tx_cleanup(dev, dev->mphy.q_tx[i], false); + } + + count = le16_get_bits(free->ctrl, MT_TX_FREE_MSDU_ID_CNT); + if (is_mt7615(&dev->mt76)) { + __le16 *token = tx_token; + + if (WARN_ON_ONCE((void *)&token[count] > end)) + return; + + for (i = 0; i < count; i++) + mt7615_mac_tx_free_token(dev, le16_to_cpu(token[i])); + } else { + __le32 *token = tx_token; + + if (WARN_ON_ONCE((void *)&token[count] > end)) + return; + + for (i = 0; i < count; i++) + mt7615_mac_tx_free_token(dev, le32_to_cpu(token[i])); + } + + rcu_read_lock(); + mt7615_mac_sta_poll(dev); + rcu_read_unlock(); + + mt76_worker_schedule(&dev->mt76.tx_worker); +} + +bool mt7615_rx_check(struct mt76_dev *mdev, void *data, int len) +{ + struct mt7615_dev *dev = container_of(mdev, struct mt7615_dev, mt76); + __le32 *rxd = (__le32 *)data; + __le32 *end = (__le32 *)&rxd[len / 4]; + enum rx_pkt_type type; + + type = le32_get_bits(rxd[0], MT_RXD0_PKT_TYPE); + + switch (type) { + case PKT_TYPE_TXRX_NOTIFY: + mt7615_mac_tx_free(dev, data, len); + return false; + case PKT_TYPE_TXS: + for (rxd++; rxd + 7 <= end; rxd += 7) + mt7615_mac_add_txs(dev, rxd); + return false; + default: + return true; + } +} +EXPORT_SYMBOL_GPL(mt7615_rx_check); + +void mt7615_queue_rx_skb(struct mt76_dev *mdev, enum mt76_rxq_id q, + struct sk_buff *skb, u32 *info) +{ + struct mt7615_dev *dev = container_of(mdev, struct mt7615_dev, mt76); + __le32 *rxd = (__le32 *)skb->data; + __le32 *end = (__le32 *)&skb->data[skb->len]; + enum rx_pkt_type type; + u16 flag; + + type = le32_get_bits(rxd[0], MT_RXD0_PKT_TYPE); + flag = le32_get_bits(rxd[0], MT_RXD0_PKT_FLAG); + if (type == PKT_TYPE_RX_EVENT && flag == 0x1) + type = PKT_TYPE_NORMAL_MCU; + + switch (type) { + case PKT_TYPE_TXS: + for (rxd++; rxd + 7 <= end; rxd += 7) + mt7615_mac_add_txs(dev, rxd); + dev_kfree_skb(skb); + break; + case PKT_TYPE_TXRX_NOTIFY: + mt7615_mac_tx_free(dev, skb->data, skb->len); + dev_kfree_skb(skb); + break; + case PKT_TYPE_RX_EVENT: + mt7615_mcu_rx_event(dev, skb); + break; + case PKT_TYPE_NORMAL_MCU: + case PKT_TYPE_NORMAL: + if (!mt7615_mac_fill_rx(dev, skb)) { + mt76_rx(&dev->mt76, q, skb); + return; + } + fallthrough; + default: + dev_kfree_skb(skb); + break; + } +} +EXPORT_SYMBOL_GPL(mt7615_queue_rx_skb); + +static void +mt7615_mac_set_sensitivity(struct mt7615_phy *phy, int val, bool ofdm) +{ + struct mt7615_dev *dev = phy->dev; + bool ext_phy = phy != &dev->phy; + + if (is_mt7663(&dev->mt76)) { + if (ofdm) + mt76_rmw(dev, MT7663_WF_PHY_MIN_PRI_PWR(ext_phy), + MT_WF_PHY_PD_OFDM_MASK(0), + MT_WF_PHY_PD_OFDM(0, val)); + else + mt76_rmw(dev, MT7663_WF_PHY_RXTD_CCK_PD(ext_phy), + MT_WF_PHY_PD_CCK_MASK(ext_phy), + MT_WF_PHY_PD_CCK(ext_phy, val)); + return; + } + + if (ofdm) + mt76_rmw(dev, MT_WF_PHY_MIN_PRI_PWR(ext_phy), + MT_WF_PHY_PD_OFDM_MASK(ext_phy), + MT_WF_PHY_PD_OFDM(ext_phy, val)); + else + mt76_rmw(dev, MT_WF_PHY_RXTD_CCK_PD(ext_phy), + MT_WF_PHY_PD_CCK_MASK(ext_phy), + MT_WF_PHY_PD_CCK(ext_phy, val)); +} + +static void +mt7615_mac_set_default_sensitivity(struct mt7615_phy *phy) +{ + /* ofdm */ + mt7615_mac_set_sensitivity(phy, 0x13c, true); + /* cck */ + mt7615_mac_set_sensitivity(phy, 0x92, false); + + phy->ofdm_sensitivity = -98; + phy->cck_sensitivity = -110; + phy->last_cca_adj = jiffies; +} + +void mt7615_mac_set_scs(struct mt7615_phy *phy, bool enable) +{ + struct mt7615_dev *dev = phy->dev; + bool ext_phy = phy != &dev->phy; + u32 reg, mask; + + mt7615_mutex_acquire(dev); + + if (phy->scs_en == enable) + goto out; + + if (is_mt7663(&dev->mt76)) { + reg = MT7663_WF_PHY_MIN_PRI_PWR(ext_phy); + mask = MT_WF_PHY_PD_BLK(0); + } else { + reg = MT_WF_PHY_MIN_PRI_PWR(ext_phy); + mask = MT_WF_PHY_PD_BLK(ext_phy); + } + + if (enable) { + mt76_set(dev, reg, mask); + if (is_mt7622(&dev->mt76)) { + mt76_set(dev, MT_MIB_M0_MISC_CR(0), 0x7 << 8); + mt76_set(dev, MT_MIB_M0_MISC_CR(0), 0x7); + } + } else { + mt76_clear(dev, reg, mask); + } + + mt7615_mac_set_default_sensitivity(phy); + phy->scs_en = enable; + +out: + mt7615_mutex_release(dev); +} + +void mt7615_mac_enable_nf(struct mt7615_dev *dev, bool ext_phy) +{ + u32 rxtd, reg; + + if (is_mt7663(&dev->mt76)) + reg = MT7663_WF_PHY_R0_PHYMUX_5; + else + reg = MT_WF_PHY_R0_PHYMUX_5(ext_phy); + + if (ext_phy) + rxtd = MT_WF_PHY_RXTD2(10); + else + rxtd = MT_WF_PHY_RXTD(12); + + mt76_set(dev, rxtd, BIT(18) | BIT(29)); + mt76_set(dev, reg, 0x5 << 12); +} + +void mt7615_mac_cca_stats_reset(struct mt7615_phy *phy) +{ + struct mt7615_dev *dev = phy->dev; + bool ext_phy = phy != &dev->phy; + u32 reg; + + if (is_mt7663(&dev->mt76)) + reg = MT7663_WF_PHY_R0_PHYMUX_5; + else + reg = MT_WF_PHY_R0_PHYMUX_5(ext_phy); + + /* reset PD and MDRDY counters */ + mt76_clear(dev, reg, GENMASK(22, 20)); + mt76_set(dev, reg, BIT(22) | BIT(20)); +} + +static void +mt7615_mac_adjust_sensitivity(struct mt7615_phy *phy, + u32 rts_err_rate, bool ofdm) +{ + struct mt7615_dev *dev = phy->dev; + int false_cca = ofdm ? phy->false_cca_ofdm : phy->false_cca_cck; + bool ext_phy = phy != &dev->phy; + s16 def_th = ofdm ? -98 : -110; + bool update = false; + s8 *sensitivity; + int signal; + + sensitivity = ofdm ? &phy->ofdm_sensitivity : &phy->cck_sensitivity; + signal = mt76_get_min_avg_rssi(&dev->mt76, ext_phy); + if (!signal) { + mt7615_mac_set_default_sensitivity(phy); + return; + } + + signal = min(signal, -72); + if (false_cca > 500) { + if (rts_err_rate > MT_FRAC(40, 100)) + return; + + /* decrease coverage */ + if (*sensitivity == def_th && signal > -90) { + *sensitivity = -90; + update = true; + } else if (*sensitivity + 2 < signal) { + *sensitivity += 2; + update = true; + } + } else if ((false_cca > 0 && false_cca < 50) || + rts_err_rate > MT_FRAC(60, 100)) { + /* increase coverage */ + if (*sensitivity - 2 >= def_th) { + *sensitivity -= 2; + update = true; + } + } + + if (*sensitivity > signal) { + *sensitivity = signal; + update = true; + } + + if (update) { + u16 val = ofdm ? *sensitivity * 2 + 512 : *sensitivity + 256; + + mt7615_mac_set_sensitivity(phy, val, ofdm); + phy->last_cca_adj = jiffies; + } +} + +static void +mt7615_mac_scs_check(struct mt7615_phy *phy) +{ + struct mt7615_dev *dev = phy->dev; + struct mib_stats *mib = &phy->mib; + u32 val, rts_err_rate = 0; + u32 mdrdy_cck, mdrdy_ofdm, pd_cck, pd_ofdm; + bool ext_phy = phy != &dev->phy; + + if (!phy->scs_en) + return; + + if (is_mt7663(&dev->mt76)) + val = mt76_rr(dev, MT7663_WF_PHY_R0_PHYCTRL_STS0(ext_phy)); + else + val = mt76_rr(dev, MT_WF_PHY_R0_PHYCTRL_STS0(ext_phy)); + pd_cck = FIELD_GET(MT_WF_PHYCTRL_STAT_PD_CCK, val); + pd_ofdm = FIELD_GET(MT_WF_PHYCTRL_STAT_PD_OFDM, val); + + if (is_mt7663(&dev->mt76)) + val = mt76_rr(dev, MT7663_WF_PHY_R0_PHYCTRL_STS5(ext_phy)); + else + val = mt76_rr(dev, MT_WF_PHY_R0_PHYCTRL_STS5(ext_phy)); + mdrdy_cck = FIELD_GET(MT_WF_PHYCTRL_STAT_MDRDY_CCK, val); + mdrdy_ofdm = FIELD_GET(MT_WF_PHYCTRL_STAT_MDRDY_OFDM, val); + + phy->false_cca_ofdm = pd_ofdm - mdrdy_ofdm; + phy->false_cca_cck = pd_cck - mdrdy_cck; + mt7615_mac_cca_stats_reset(phy); + + if (mib->rts_cnt + mib->rts_retries_cnt) + rts_err_rate = MT_FRAC(mib->rts_retries_cnt, + mib->rts_cnt + mib->rts_retries_cnt); + + /* cck */ + mt7615_mac_adjust_sensitivity(phy, rts_err_rate, false); + /* ofdm */ + mt7615_mac_adjust_sensitivity(phy, rts_err_rate, true); + + if (time_after(jiffies, phy->last_cca_adj + 10 * HZ)) + mt7615_mac_set_default_sensitivity(phy); +} + +static u8 +mt7615_phy_get_nf(struct mt7615_dev *dev, int idx) +{ + static const u8 nf_power[] = { 92, 89, 86, 83, 80, 75, 70, 65, 60, 55, 52 }; + u32 reg, val, sum = 0, n = 0; + int i; + + if (is_mt7663(&dev->mt76)) + reg = MT7663_WF_PHY_RXTD(20); + else + reg = idx ? MT_WF_PHY_RXTD2(17) : MT_WF_PHY_RXTD(20); + + for (i = 0; i < ARRAY_SIZE(nf_power); i++, reg += 4) { + val = mt76_rr(dev, reg); + sum += val * nf_power[i]; + n += val; + } + + if (!n) + return 0; + + return sum / n; +} + +static void +mt7615_phy_update_channel(struct mt76_phy *mphy, int idx) +{ + struct mt7615_dev *dev = container_of(mphy->dev, struct mt7615_dev, mt76); + struct mt7615_phy *phy = mphy->priv; + struct mt76_channel_state *state; + u64 busy_time, tx_time, rx_time, obss_time; + u32 obss_reg = idx ? MT_WF_RMAC_MIB_TIME6 : MT_WF_RMAC_MIB_TIME5; + 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, obss_reg, MT_MIB_OBSSTIME_MASK); + + nf = mt7615_phy_get_nf(dev, 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); +} + +static void mt7615_update_survey(struct mt7615_dev *dev) +{ + struct mt76_dev *mdev = &dev->mt76; + struct mt76_phy *mphy_ext = mdev->phys[MT_BAND1]; + ktime_t cur_time; + + /* MT7615 can only update both phys simultaneously + * since some reisters are shared across bands. + */ + + mt7615_phy_update_channel(&mdev->phy, 0); + if (mphy_ext) + mt7615_phy_update_channel(mphy_ext, 1); + + cur_time = ktime_get_boottime(); + + mt76_update_survey_active_time(&mdev->phy, cur_time); + if (mphy_ext) + mt76_update_survey_active_time(mphy_ext, cur_time); + + /* reset obss airtime */ + mt76_set(dev, MT_WF_RMAC_MIB_TIME0, MT_WF_RMAC_MIB_RXTIME_CLR); +} + +void mt7615_update_channel(struct mt76_phy *mphy) +{ + struct mt7615_dev *dev = container_of(mphy->dev, struct mt7615_dev, mt76); + + if (mt76_connac_pm_wake(&dev->mphy, &dev->pm)) + return; + + mt7615_update_survey(dev); + mt76_connac_power_save_sched(&dev->mphy, &dev->pm); +} +EXPORT_SYMBOL_GPL(mt7615_update_channel); + +static void +mt7615_mac_update_mib_stats(struct mt7615_phy *phy) +{ + struct mt7615_dev *dev = phy->dev; + struct mib_stats *mib = &phy->mib; + bool ext_phy = phy != &dev->phy; + int i, aggr = 0; + u32 val, val2; + + mib->fcs_err_cnt += mt76_get_field(dev, MT_MIB_SDR3(ext_phy), + MT_MIB_SDR3_FCS_ERR_MASK); + + val = mt76_get_field(dev, MT_MIB_SDR14(ext_phy), + MT_MIB_AMPDU_MPDU_COUNT); + if (val) { + val2 = mt76_get_field(dev, MT_MIB_SDR15(ext_phy), + MT_MIB_AMPDU_ACK_COUNT); + mib->aggr_per = 1000 * (val - val2) / val; + } + + for (i = 0; i < 4; i++) { + val = mt76_rr(dev, MT_MIB_MB_SDR1(ext_phy, i)); + mib->ba_miss_cnt += FIELD_GET(MT_MIB_BA_MISS_COUNT_MASK, val); + mib->ack_fail_cnt += FIELD_GET(MT_MIB_ACK_FAIL_COUNT_MASK, + val); + + val = mt76_rr(dev, MT_MIB_MB_SDR0(ext_phy, i)); + mib->rts_cnt += FIELD_GET(MT_MIB_RTS_COUNT_MASK, val); + mib->rts_retries_cnt += FIELD_GET(MT_MIB_RTS_RETRIES_COUNT_MASK, + val); + + val = mt76_rr(dev, MT_TX_AGG_CNT(ext_phy, i)); + phy->mt76->aggr_stats[aggr++] += val & 0xffff; + phy->mt76->aggr_stats[aggr++] += val >> 16; + } +} + +void mt7615_pm_wake_work(struct work_struct *work) +{ + struct mt7615_dev *dev; + struct mt76_phy *mphy; + + dev = (struct mt7615_dev *)container_of(work, struct mt7615_dev, + pm.wake_work); + mphy = dev->phy.mt76; + + if (!mt7615_mcu_set_drv_ctrl(dev)) { + struct mt76_dev *mdev = &dev->mt76; + int i; + + if (mt76_is_sdio(mdev)) { + mt76_connac_pm_dequeue_skbs(mphy, &dev->pm); + mt76_worker_schedule(&mdev->sdio.txrx_worker); + } else { + local_bh_disable(); + mt76_for_each_q_rx(mdev, i) + napi_schedule(&mdev->napi[i]); + local_bh_enable(); + mt76_connac_pm_dequeue_skbs(mphy, &dev->pm); + mt76_queue_tx_cleanup(dev, mdev->q_mcu[MT_MCUQ_WM], + false); + } + + if (test_bit(MT76_STATE_RUNNING, &mphy->state)) { + unsigned long timeout; + + timeout = mt7615_get_macwork_timeout(dev); + ieee80211_queue_delayed_work(mphy->hw, &mphy->mac_work, + timeout); + } + } + + ieee80211_wake_queues(mphy->hw); + wake_up(&dev->pm.wait); +} + +void mt7615_pm_power_save_work(struct work_struct *work) +{ + struct mt7615_dev *dev; + unsigned long delta; + + dev = (struct mt7615_dev *)container_of(work, struct mt7615_dev, + pm.ps_work.work); + + delta = dev->pm.idle_timeout; + if (test_bit(MT76_HW_SCANNING, &dev->mphy.state) || + test_bit(MT76_HW_SCHED_SCANNING, &dev->mphy.state)) + goto out; + + if (mutex_is_locked(&dev->mt76.mutex)) + /* if mt76 mutex is held we should not put the device + * to sleep since we are currently accessing device + * register map. We need to wait for the next power_save + * trigger. + */ + goto out; + + if (time_is_after_jiffies(dev->pm.last_activity + delta)) { + delta = dev->pm.last_activity + delta - jiffies; + goto out; + } + + if (!mt7615_mcu_set_fw_ctrl(dev)) + return; +out: + queue_delayed_work(dev->mt76.wq, &dev->pm.ps_work, delta); +} + +void mt7615_mac_work(struct work_struct *work) +{ + struct mt7615_phy *phy; + struct mt76_phy *mphy; + unsigned long timeout; + + mphy = (struct mt76_phy *)container_of(work, struct mt76_phy, + mac_work.work); + phy = mphy->priv; + + mt7615_mutex_acquire(phy->dev); + + mt7615_update_survey(phy->dev); + if (++mphy->mac_work_count == 5) { + mphy->mac_work_count = 0; + + mt7615_mac_update_mib_stats(phy); + mt7615_mac_scs_check(phy); + } + + mt7615_mutex_release(phy->dev); + + mt76_tx_status_check(mphy->dev, false); + + timeout = mt7615_get_macwork_timeout(phy->dev); + ieee80211_queue_delayed_work(mphy->hw, &mphy->mac_work, timeout); +} + +void mt7615_tx_token_put(struct mt7615_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) + mt7615_txwi_free(dev, txwi); + spin_unlock_bh(&dev->mt76.token_lock); + idr_destroy(&dev->mt76.token); +} +EXPORT_SYMBOL_GPL(mt7615_tx_token_put); + +static void mt7615_dfs_stop_radar_detector(struct mt7615_phy *phy) +{ + struct mt7615_dev *dev = phy->dev; + + if (phy->rdd_state & BIT(0)) + mt76_connac_mcu_rdd_cmd(&dev->mt76, RDD_STOP, 0, + MT_RX_SEL0, 0); + if (phy->rdd_state & BIT(1)) + mt76_connac_mcu_rdd_cmd(&dev->mt76, RDD_STOP, 1, + MT_RX_SEL0, 0); +} + +static int mt7615_dfs_start_rdd(struct mt7615_dev *dev, int chain) +{ + int err; + + err = mt76_connac_mcu_rdd_cmd(&dev->mt76, RDD_START, chain, + MT_RX_SEL0, 0); + if (err < 0) + return err; + + return mt76_connac_mcu_rdd_cmd(&dev->mt76, RDD_DET_MODE, chain, + MT_RX_SEL0, 1); +} + +static int mt7615_dfs_start_radar_detector(struct mt7615_phy *phy) +{ + struct cfg80211_chan_def *chandef = &phy->mt76->chandef; + struct mt7615_dev *dev = phy->dev; + bool ext_phy = phy != &dev->phy; + int err; + + /* start CAC */ + err = mt76_connac_mcu_rdd_cmd(&dev->mt76, RDD_CAC_START, ext_phy, + MT_RX_SEL0, 0); + if (err < 0) + return err; + + err = mt7615_dfs_start_rdd(dev, ext_phy); + if (err < 0) + return err; + + phy->rdd_state |= BIT(ext_phy); + + if (chandef->width == NL80211_CHAN_WIDTH_160 || + chandef->width == NL80211_CHAN_WIDTH_80P80) { + err = mt7615_dfs_start_rdd(dev, 1); + if (err < 0) + return err; + + phy->rdd_state |= BIT(1); + } + + return 0; +} + +static int +mt7615_dfs_init_radar_specs(struct mt7615_phy *phy) +{ + const struct mt7615_dfs_radar_spec *radar_specs; + struct mt7615_dev *dev = phy->dev; + int err, i, lpn = 500; + + switch (dev->mt76.region) { + case NL80211_DFS_FCC: + radar_specs = &fcc_radar_specs; + lpn = 8; + break; + case NL80211_DFS_ETSI: + radar_specs = &etsi_radar_specs; + break; + case NL80211_DFS_JP: + radar_specs = &jp_radar_specs; + break; + default: + return -EINVAL; + } + + /* avoid FCC radar detection in non-FCC region */ + err = mt7615_mcu_set_fcc5_lpn(dev, lpn); + if (err < 0) + return err; + + for (i = 0; i < ARRAY_SIZE(radar_specs->radar_pattern); i++) { + err = mt7615_mcu_set_radar_th(dev, i, + &radar_specs->radar_pattern[i]); + if (err < 0) + return err; + } + + return mt7615_mcu_set_pulse_th(dev, &radar_specs->pulse_th); +} + +int mt7615_dfs_init_radar_detector(struct mt7615_phy *phy) +{ + struct cfg80211_chan_def *chandef = &phy->mt76->chandef; + struct mt7615_dev *dev = phy->dev; + bool ext_phy = phy != &dev->phy; + enum mt76_dfs_state dfs_state, prev_state; + int err; + + if (is_mt7663(&dev->mt76)) + return 0; + + prev_state = phy->mt76->dfs_state; + dfs_state = mt76_phy_dfs_state(phy->mt76); + if ((chandef->chan->flags & IEEE80211_CHAN_RADAR) && + dfs_state < MT_DFS_STATE_CAC) + dfs_state = MT_DFS_STATE_ACTIVE; + + if (prev_state == dfs_state) + return 0; + + if (dfs_state == MT_DFS_STATE_DISABLED) + goto stop; + + if (prev_state <= MT_DFS_STATE_DISABLED) { + err = mt7615_dfs_init_radar_specs(phy); + if (err < 0) + return err; + + err = mt7615_dfs_start_radar_detector(phy); + if (err < 0) + return err; + + phy->mt76->dfs_state = MT_DFS_STATE_CAC; + } + + if (dfs_state == MT_DFS_STATE_CAC) + return 0; + + err = mt76_connac_mcu_rdd_cmd(&dev->mt76, RDD_CAC_END, + ext_phy, MT_RX_SEL0, 0); + if (err < 0) { + phy->mt76->dfs_state = MT_DFS_STATE_UNKNOWN; + return err; + } + + phy->mt76->dfs_state = MT_DFS_STATE_ACTIVE; + return 0; + +stop: + err = mt76_connac_mcu_rdd_cmd(&dev->mt76, RDD_NORMAL_START, ext_phy, + MT_RX_SEL0, 0); + if (err < 0) + return err; + + mt7615_dfs_stop_radar_detector(phy); + phy->mt76->dfs_state = MT_DFS_STATE_DISABLED; + + return 0; +} + +int mt7615_mac_set_beacon_filter(struct mt7615_phy *phy, + struct ieee80211_vif *vif, + bool enable) +{ + struct mt7615_dev *dev = phy->dev; + bool ext_phy = phy != &dev->phy; + int err; + + if (!mt7615_firmware_offload(dev)) + return -EOPNOTSUPP; + + switch (vif->type) { + case NL80211_IFTYPE_MONITOR: + return 0; + case NL80211_IFTYPE_MESH_POINT: + case NL80211_IFTYPE_ADHOC: + case NL80211_IFTYPE_AP: + if (enable) + phy->n_beacon_vif++; + else + phy->n_beacon_vif--; + fallthrough; + default: + break; + } + + err = mt7615_mcu_set_bss_pm(dev, vif, !phy->n_beacon_vif); + if (err) + return err; + + if (phy->n_beacon_vif) { + vif->driver_flags &= ~IEEE80211_VIF_BEACON_FILTER; + mt76_clear(dev, MT_WF_RFCR(ext_phy), + MT_WF_RFCR_DROP_OTHER_BEACON); + } else { + vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER; + mt76_set(dev, MT_WF_RFCR(ext_phy), + MT_WF_RFCR_DROP_OTHER_BEACON); + } + + return 0; +} + +void mt7615_coredump_work(struct work_struct *work) +{ + struct mt7615_dev *dev; + char *dump, *data; + + dev = (struct mt7615_dev *)container_of(work, struct mt7615_dev, + coredump.work.work); + + if (time_is_after_jiffies(dev->coredump.last_activity + + 4 * MT76_CONNAC_COREDUMP_TIMEOUT)) { + queue_delayed_work(dev->mt76.wq, &dev->coredump.work, + MT76_CONNAC_COREDUMP_TIMEOUT); + return; + } + + dump = vzalloc(MT76_CONNAC_COREDUMP_SZ); + data = dump; + + while (true) { + struct sk_buff *skb; + + spin_lock_bh(&dev->mt76.lock); + skb = __skb_dequeue(&dev->coredump.msg_list); + spin_unlock_bh(&dev->mt76.lock); + + if (!skb) + break; + + skb_pull(skb, sizeof(struct mt7615_mcu_rxd)); + if (!dump || data + skb->len - dump > MT76_CONNAC_COREDUMP_SZ) { + dev_kfree_skb(skb); + continue; + } + + memcpy(data, skb->data, skb->len); + data += skb->len; + + dev_kfree_skb(skb); + } + + if (dump) + dev_coredumpv(dev->mt76.dev, dump, MT76_CONNAC_COREDUMP_SZ, + GFP_KERNEL); +} |