root/drivers/net/wireless/mediatek/mt76/mt76x02_mac.h
/* SPDX-License-Identifier: BSD-3-Clause-Clear */
/*
 * Copyright (C) 2016 Felix Fietkau <nbd@nbd.name>
 * Copyright (C) 2018 Stanislaw Gruszka <stf_xl@wp.pl>
 */

#ifndef __MT76X02_MAC_H
#define __MT76X02_MAC_H

struct mt76x02_dev;

struct mt76x02_tx_status {
        u8 valid:1;
        u8 success:1;
        u8 aggr:1;
        u8 ack_req:1;
        u8 wcid;
        u8 pktid;
        u8 retry;
        u16 rate;
} __packed __aligned(2);

#define MT_VIF_WCID(_n)         (254 - ((_n) & 7))
#define MT_MAX_VIFS             8

#define MT_PKTID_RATE           GENMASK(4, 0)
#define MT_PKTID_AC             GENMASK(6, 5)

struct mt76x02_vif {
        struct mt76_wcid group_wcid; /* must be first */
        u8 idx;
};

DECLARE_EWMA(pktlen, 8, 8);

struct mt76x02_sta {
        struct mt76_wcid wcid; /* must be first */

        struct mt76x02_vif *vif;
        struct mt76x02_tx_status status;
        int n_frames;

        struct ewma_pktlen pktlen;
};

#define MT_RXINFO_BA                    BIT(0)
#define MT_RXINFO_DATA                  BIT(1)
#define MT_RXINFO_NULL                  BIT(2)
#define MT_RXINFO_FRAG                  BIT(3)
#define MT_RXINFO_UNICAST               BIT(4)
#define MT_RXINFO_MULTICAST             BIT(5)
#define MT_RXINFO_BROADCAST             BIT(6)
#define MT_RXINFO_MYBSS                 BIT(7)
#define MT_RXINFO_CRCERR                BIT(8)
#define MT_RXINFO_ICVERR                BIT(9)
#define MT_RXINFO_MICERR                BIT(10)
#define MT_RXINFO_AMSDU                 BIT(11)
#define MT_RXINFO_HTC                   BIT(12)
#define MT_RXINFO_RSSI                  BIT(13)
#define MT_RXINFO_L2PAD                 BIT(14)
#define MT_RXINFO_AMPDU                 BIT(15)
#define MT_RXINFO_DECRYPT               BIT(16)
#define MT_RXINFO_BSSIDX3               BIT(17)
#define MT_RXINFO_WAPI_KEY              BIT(18)
#define MT_RXINFO_PN_LEN                GENMASK(21, 19)
#define MT_RXINFO_SW_FTYPE0             BIT(22)
#define MT_RXINFO_SW_FTYPE1             BIT(23)
#define MT_RXINFO_PROBE_RESP            BIT(24)
#define MT_RXINFO_BEACON                BIT(25)
#define MT_RXINFO_DISASSOC              BIT(26)
#define MT_RXINFO_DEAUTH                BIT(27)
#define MT_RXINFO_ACTION                BIT(28)
#define MT_RXINFO_TCP_SUM_ERR           BIT(30)
#define MT_RXINFO_IP_SUM_ERR            BIT(31)

#define MT_RXWI_CTL_WCID                GENMASK(7, 0)
#define MT_RXWI_CTL_KEY_IDX             GENMASK(9, 8)
#define MT_RXWI_CTL_BSS_IDX             GENMASK(12, 10)
#define MT_RXWI_CTL_UDF                 GENMASK(15, 13)
#define MT_RXWI_CTL_MPDU_LEN            GENMASK(29, 16)
#define MT_RXWI_CTL_EOF                 BIT(31)

#define MT_RXWI_TID                     GENMASK(3, 0)
#define MT_RXWI_SN                      GENMASK(15, 4)

#define MT_RXWI_RATE_INDEX              GENMASK(5, 0)
#define MT_RXWI_RATE_LDPC               BIT(6)
#define MT_RXWI_RATE_BW                 GENMASK(8, 7)
#define MT_RXWI_RATE_SGI                BIT(9)
#define MT_RXWI_RATE_STBC               BIT(10)
#define MT_RXWI_RATE_LDPC_EXSYM         BIT(11)
#define MT_RXWI_RATE_PHY                GENMASK(15, 13)

#define MT_RATE_INDEX_VHT_IDX           GENMASK(3, 0)
#define MT_RATE_INDEX_VHT_NSS           GENMASK(5, 4)

struct mt76x02_rxwi {
        __le32 rxinfo;

        __le32 ctl;

        __le16 tid_sn;
        __le16 rate;

        u8 rssi[4];

        __le32 bbp_rxinfo[4];
};

#define MT_TX_PWR_ADJ                   GENMASK(3, 0)

enum mt76x2_phy_bandwidth {
        MT_PHY_BW_20,
        MT_PHY_BW_40,
        MT_PHY_BW_80,
};

#define MT_TXWI_FLAGS_FRAG              BIT(0)
#define MT_TXWI_FLAGS_MMPS              BIT(1)
#define MT_TXWI_FLAGS_CFACK             BIT(2)
#define MT_TXWI_FLAGS_TS                BIT(3)
#define MT_TXWI_FLAGS_AMPDU             BIT(4)
#define MT_TXWI_FLAGS_MPDU_DENSITY      GENMASK(7, 5)
#define MT_TXWI_FLAGS_TXOP              GENMASK(9, 8)
#define MT_TXWI_FLAGS_NDPS              BIT(10)
#define MT_TXWI_FLAGS_RTSBWSIG          BIT(11)
#define MT_TXWI_FLAGS_NDP_BW            GENMASK(13, 12)
#define MT_TXWI_FLAGS_SOUND             BIT(14)
#define MT_TXWI_FLAGS_TX_RATE_LUT       BIT(15)

#define MT_TXWI_ACK_CTL_REQ             BIT(0)
#define MT_TXWI_ACK_CTL_NSEQ            BIT(1)
#define MT_TXWI_ACK_CTL_BA_WINDOW       GENMASK(7, 2)

struct mt76x02_txwi {
        __le16 flags;
        __le16 rate;
        u8 ack_ctl;
        u8 wcid;
        __le16 len_ctl;
        __le32 iv;
        __le32 eiv;
        u8 aid;
        u8 txstream;
        u8 ctl2;
        u8 pktid;
} __packed __aligned(4);

static inline bool mt76x02_wait_for_mac(struct mt76_dev *dev)
{
        const u32 MAC_CSR0 = 0x1000;
        int i;

        for (i = 0; i < 500; i++) {
                if (test_bit(MT76_REMOVED, &dev->phy.state))
                        return false;

                switch (dev->bus->rr(dev, MAC_CSR0)) {
                case 0:
                case ~0:
                        break;
                default:
                        return true;
                }
                usleep_range(5000, 10000);
        }
        return false;
}

void mt76x02_mac_reset_counters(struct mt76x02_dev *dev);
void mt76x02_mac_set_short_preamble(struct mt76x02_dev *dev, bool enable);
int mt76x02_mac_shared_key_setup(struct mt76x02_dev *dev, u8 vif_idx,
                                 u8 key_idx, struct ieee80211_key_conf *key);
int mt76x02_mac_wcid_set_key(struct mt76x02_dev *dev, u8 idx,
                             struct ieee80211_key_conf *key);
void mt76x02_mac_wcid_sync_pn(struct mt76x02_dev *dev, u8 idx,
                              struct ieee80211_key_conf *key);
void mt76x02_mac_wcid_setup(struct mt76x02_dev *dev, u8 idx, u8 vif_idx,
                            u8 *mac);
void mt76x02_mac_wcid_set_drop(struct mt76x02_dev *dev, u8 idx, bool drop);
void mt76x02_mac_wcid_set_rate(struct mt76x02_dev *dev, struct mt76_wcid *wcid,
                               const struct ieee80211_tx_rate *rate);
bool mt76x02_mac_load_tx_status(struct mt76x02_dev *dev,
                                struct mt76x02_tx_status *stat);
void mt76x02_send_tx_status(struct mt76x02_dev *dev,
                            struct mt76x02_tx_status *stat, u8 *update);
int mt76x02_mac_process_rx(struct mt76x02_dev *dev, struct sk_buff *skb,
                           void *rxi);
void mt76x02_mac_set_tx_protection(struct mt76x02_dev *dev, bool legacy_prot,
                                   int ht_mode);
void mt76x02_mac_set_rts_thresh(struct mt76x02_dev *dev, u32 val);
void mt76x02_mac_setaddr(struct mt76x02_dev *dev, const u8 *addr);
void mt76x02_mac_write_txwi(struct mt76x02_dev *dev, struct mt76x02_txwi *txwi,
                            struct sk_buff *skb, struct mt76_wcid *wcid,
                            struct ieee80211_sta *sta, int len);
void mt76x02_mac_poll_tx_status(struct mt76x02_dev *dev, bool irq);
void mt76x02_tx_complete_skb(struct mt76_dev *mdev, struct mt76_queue_entry *e);
void mt76x02_update_channel(struct mt76_phy *mphy);
void mt76x02_mac_work(struct work_struct *work);

void mt76x02_mac_cc_reset(struct mt76x02_dev *dev);
void mt76x02_mac_set_bssid(struct mt76x02_dev *dev, u8 idx, const u8 *addr);
void mt76x02_mac_set_beacon(struct mt76x02_dev *dev, struct sk_buff *skb);
void mt76x02_mac_set_beacon_enable(struct mt76x02_dev *dev,
                                   struct ieee80211_vif *vif, bool enable);

void mt76x02_edcca_init(struct mt76x02_dev *dev);
#endif