drivers/net/wireless/mediatek/mt76/mt76x02_mac.h

   1 /*
   2  * Copyright (C) 2016 Felix Fietkau <nbd@nbd.name>
   3  * Copyright (C) 2018 Stanislaw Gruszka <stf_xl@wp.pl>
   4  *
   5  * Permission to use, copy, modify, and/or distribute this software for any
   6  * purpose with or without fee is hereby granted, provided that the above
   7  * copyright notice and this permission notice appear in all copies.
   8  *
   9  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  10  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  11  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  12  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  13  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  14  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  15  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  16  */
  17
  18 #ifndef __MT76X02_MAC_H
  19 #define __MT76X02_MAC_H
  20
  21 struct mt76x02_dev;
  22
  23 struct mt76x02_tx_status {
  24         u8 valid:1;
  25         u8 success:1;
  26         u8 aggr:1;
  27         u8 ack_req:1;
  28         u8 wcid;
  29         u8 pktid;
  30         u8 retry;
  31         u16 rate;
  32 } __packed __aligned(2);
  33
  34 #define MT_VIF_WCID(_n)         (254 - ((_n) & 7))
  35 #define MT_MAX_VIFS             8
  36
  37 struct mt76x02_vif {
  38         struct mt76_wcid group_wcid; /* must be first */
  39         u8 idx;
  40 };
  41
  42 struct mt76x02_sta {
  43         struct mt76_wcid wcid; /* must be first */
  44
  45         struct mt76x02_vif *vif;
  46         struct mt76x02_tx_status status;
  47         int n_frames;
  48
  49 };
  50
  51 #define MT_RXINFO_BA                    BIT(0)
  52 #define MT_RXINFO_DATA                  BIT(1)
  53 #define MT_RXINFO_NULL                  BIT(2)
  54 #define MT_RXINFO_FRAG                  BIT(3)
  55 #define MT_RXINFO_UNICAST               BIT(4)
  56 #define MT_RXINFO_MULTICAST             BIT(5)
  57 #define MT_RXINFO_BROADCAST             BIT(6)
  58 #define MT_RXINFO_MYBSS                 BIT(7)
  59 #define MT_RXINFO_CRCERR                BIT(8)
  60 #define MT_RXINFO_ICVERR                BIT(9)
  61 #define MT_RXINFO_MICERR                BIT(10)
  62 #define MT_RXINFO_AMSDU                 BIT(11)
  63 #define MT_RXINFO_HTC                   BIT(12)
  64 #define MT_RXINFO_RSSI                  BIT(13)
  65 #define MT_RXINFO_L2PAD                 BIT(14)
  66 #define MT_RXINFO_AMPDU                 BIT(15)
  67 #define MT_RXINFO_DECRYPT               BIT(16)
  68 #define MT_RXINFO_BSSIDX3               BIT(17)
  69 #define MT_RXINFO_WAPI_KEY              BIT(18)
  70 #define MT_RXINFO_PN_LEN                GENMASK(21, 19)
  71 #define MT_RXINFO_SW_FTYPE0             BIT(22)
  72 #define MT_RXINFO_SW_FTYPE1             BIT(23)
  73 #define MT_RXINFO_PROBE_RESP            BIT(24)
  74 #define MT_RXINFO_BEACON                BIT(25)
  75 #define MT_RXINFO_DISASSOC              BIT(26)
  76 #define MT_RXINFO_DEAUTH                BIT(27)
  77 #define MT_RXINFO_ACTION                BIT(28)
  78 #define MT_RXINFO_TCP_SUM_ERR           BIT(30)
  79 #define MT_RXINFO_IP_SUM_ERR            BIT(31)
  80
  81 #define MT_RXWI_CTL_WCID                GENMASK(7, 0)
  82 #define MT_RXWI_CTL_KEY_IDX             GENMASK(9, 8)
  83 #define MT_RXWI_CTL_BSS_IDX             GENMASK(12, 10)
  84 #define MT_RXWI_CTL_UDF                 GENMASK(15, 13)
  85 #define MT_RXWI_CTL_MPDU_LEN            GENMASK(29, 16)
  86 #define MT_RXWI_CTL_EOF                 BIT(31)
  87
  88 #define MT_RXWI_TID                     GENMASK(3, 0)
  89 #define MT_RXWI_SN                      GENMASK(15, 4)
  90
  91 #define MT_RXWI_RATE_INDEX              GENMASK(5, 0)
  92 #define MT_RXWI_RATE_LDPC               BIT(6)
  93 #define MT_RXWI_RATE_BW                 GENMASK(8, 7)
  94 #define MT_RXWI_RATE_SGI                BIT(9)
  95 #define MT_RXWI_RATE_STBC               BIT(10)
  96 #define MT_RXWI_RATE_LDPC_EXSYM         BIT(11)
  97 #define MT_RXWI_RATE_PHY                GENMASK(15, 13)
  98
  99 #define MT_RATE_INDEX_VHT_IDX           GENMASK(3, 0)
 100 #define MT_RATE_INDEX_VHT_NSS           GENMASK(5, 4)
 101
 102 struct mt76x02_rxwi {
 103         __le32 rxinfo;
 104
 105         __le32 ctl;
 106
 107         __le16 tid_sn;
 108         __le16 rate;
 109
 110         u8 rssi[4];
 111
 112         __le32 bbp_rxinfo[4];
 113 };
 114
 115 #define MT_TX_PWR_ADJ                   GENMASK(3, 0)
 116
 117 enum mt76x2_phy_bandwidth {
 118         MT_PHY_BW_20,
 119         MT_PHY_BW_40,
 120         MT_PHY_BW_80,
 121 };
 122
 123 #define MT_TXWI_FLAGS_FRAG              BIT(0)
 124 #define MT_TXWI_FLAGS_MMPS              BIT(1)
 125 #define MT_TXWI_FLAGS_CFACK             BIT(2)
 126 #define MT_TXWI_FLAGS_TS                BIT(3)
 127 #define MT_TXWI_FLAGS_AMPDU             BIT(4)
 128 #define MT_TXWI_FLAGS_MPDU_DENSITY      GENMASK(7, 5)
 129 #define MT_TXWI_FLAGS_TXOP              GENMASK(9, 8)
 130 #define MT_TXWI_FLAGS_NDPS              BIT(10)
 131 #define MT_TXWI_FLAGS_RTSBWSIG          BIT(11)
 132 #define MT_TXWI_FLAGS_NDP_BW            GENMASK(13, 12)
 133 #define MT_TXWI_FLAGS_SOUND             BIT(14)
 134 #define MT_TXWI_FLAGS_TX_RATE_LUT       BIT(15)
 135
 136 #define MT_TXWI_ACK_CTL_REQ             BIT(0)
 137 #define MT_TXWI_ACK_CTL_NSEQ            BIT(1)
 138 #define MT_TXWI_ACK_CTL_BA_WINDOW       GENMASK(7, 2)
 139
 140 struct mt76x02_txwi {
 141         __le16 flags;
 142         __le16 rate;
 143         u8 ack_ctl;
 144         u8 wcid;
 145         __le16 len_ctl;
 146         __le32 iv;
 147         __le32 eiv;
 148         u8 aid;
 149         u8 txstream;
 150         u8 ctl2;
 151         u8 pktid;
 152 } __packed __aligned(4);
 153
 154 static inline bool mt76x02_wait_for_mac(struct mt76_dev *dev)
 155 {
 156         const u32 MAC_CSR0 = 0x1000;
 157         int i;
 158
 159         for (i = 0; i < 500; i++) {
 160                 if (test_bit(MT76_REMOVED, &dev->state))
 161                         return false;
 162
 163                 switch (dev->bus->rr(dev, MAC_CSR0)) {
 164                 case 0:
 165                 case ~0:
 166                         break;
 167                 default:
 168                         return true;
 169                 }
 170                 usleep_range(5000, 10000);
 171         }
 172         return false;
 173 }
 174
 175 void mt76x02_mac_set_short_preamble(struct mt76x02_dev *dev, bool enable);
 176 int mt76x02_mac_shared_key_setup(struct mt76x02_dev *dev, u8 vif_idx,
 177                                  u8 key_idx, struct ieee80211_key_conf *key);
 178 int mt76x02_mac_wcid_set_key(struct mt76x02_dev *dev, u8 idx,
 179                              struct ieee80211_key_conf *key);
 180 void mt76x02_mac_wcid_sync_pn(struct mt76x02_dev *dev, u8 idx,
 181                               struct ieee80211_key_conf *key);
 182 void mt76x02_mac_wcid_setup(struct mt76x02_dev *dev, u8 idx, u8 vif_idx,
 183                             u8 *mac);
 184 void mt76x02_mac_wcid_set_drop(struct mt76x02_dev *dev, u8 idx, bool drop);
 185 void mt76x02_mac_wcid_set_rate(struct mt76x02_dev *dev, struct mt76_wcid *wcid,
 186                                const struct ieee80211_tx_rate *rate);
 187 bool mt76x02_mac_load_tx_status(struct mt76x02_dev *dev,
 188                                 struct mt76x02_tx_status *stat);
 189 void mt76x02_send_tx_status(struct mt76x02_dev *dev,
 190                             struct mt76x02_tx_status *stat, u8 *update);
 191 int mt76x02_mac_process_rx(struct mt76x02_dev *dev, struct sk_buff *skb,
 192                            void *rxi);
 193 void mt76x02_mac_set_tx_protection(struct mt76x02_dev *dev, bool legacy_prot,
 194                                    int ht_mode);
 195 void mt76x02_mac_set_rts_thresh(struct mt76x02_dev *dev, u32 val);
 196 void mt76x02_mac_setaddr(struct mt76x02_dev *dev, const u8 *addr);
 197 void mt76x02_mac_write_txwi(struct mt76x02_dev *dev, struct mt76x02_txwi *txwi,
 198                             struct sk_buff *skb, struct mt76_wcid *wcid,
 199                             struct ieee80211_sta *sta, int len);
 200 void mt76x02_mac_poll_tx_status(struct mt76x02_dev *dev, bool irq);
 201 void mt76x02_tx_complete_skb(struct mt76_dev *mdev, enum mt76_txq_id qid,
 202                              struct mt76_queue_entry *e);
 203 void mt76x02_update_channel(struct mt76_dev *mdev);
 204 void mt76x02_mac_work(struct work_struct *work);
 205
 206 void mt76x02_mac_set_bssid(struct mt76x02_dev *dev, u8 idx, const u8 *addr);
 207 int mt76x02_mac_set_beacon(struct mt76x02_dev *dev, u8 vif_idx,
 208                            struct sk_buff *skb);
 209 void mt76x02_mac_set_beacon_enable(struct mt76x02_dev *dev,
 210                                    struct ieee80211_vif *vif, bool val);
 211
 212 void mt76x02_edcca_init(struct mt76x02_dev *dev, bool enable);
 213 #endif