drivers/net/wireless/mediatek/mt76/mt7921/init.c

   1 // SPDX-License-Identifier: ISC
   2 /* Copyright (C) 2020 MediaTek Inc. */
   3
   4 #include <linux/etherdevice.h>
   5 #include "mt7921.h"
   6 #include "mac.h"
   7 #include "mcu.h"
   8 #include "eeprom.h"
   9
  10 #define CCK_RATE(_idx, _rate) {                                         \
  11         .bitrate = _rate,                                               \
  12         .flags = IEEE80211_RATE_SHORT_PREAMBLE,                         \
  13         .hw_value = (MT_PHY_TYPE_CCK << 8) | (_idx),                    \
  14         .hw_value_short = (MT_PHY_TYPE_CCK << 8) | (4 + (_idx)),        \
  15 }
  16
  17 #define OFDM_RATE(_idx, _rate) {                                        \
  18         .bitrate = _rate,                                               \
  19         .hw_value = (MT_PHY_TYPE_OFDM << 8) | (_idx),                   \
  20         .hw_value_short = (MT_PHY_TYPE_OFDM << 8) | (_idx),             \
  21 }
  22
  23 static struct ieee80211_rate mt7921_rates[] = {
  24         CCK_RATE(0, 10),
  25         CCK_RATE(1, 20),
  26         CCK_RATE(2, 55),
  27         CCK_RATE(3, 110),
  28         OFDM_RATE(11, 60),
  29         OFDM_RATE(15, 90),
  30         OFDM_RATE(10, 120),
  31         OFDM_RATE(14, 180),
  32         OFDM_RATE(9,  240),
  33         OFDM_RATE(13, 360),
  34         OFDM_RATE(8,  480),
  35         OFDM_RATE(12, 540),
  36 };
  37
  38 static const struct ieee80211_iface_limit if_limits[] = {
  39         {
  40                 .max = MT7921_MAX_INTERFACES,
  41                 .types = BIT(NL80211_IFTYPE_STATION)
  42         }
  43 };
  44
  45 static const struct ieee80211_iface_combination if_comb[] = {
  46         {
  47                 .limits = if_limits,
  48                 .n_limits = ARRAY_SIZE(if_limits),
  49                 .max_interfaces = MT7921_MAX_INTERFACES,
  50                 .num_different_channels = 1,
  51                 .beacon_int_infra_match = true,
  52         }
  53 };
  54
  55 static void
  56 mt7921_regd_notifier(struct wiphy *wiphy,
  57                      struct regulatory_request *request)
  58 {
  59         struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
  60         struct mt7921_dev *dev = mt7921_hw_dev(hw);
  61         struct mt7921_phy *phy = mt7921_hw_phy(hw);
  62
  63         memcpy(dev->mt76.alpha2, request->alpha2, sizeof(dev->mt76.alpha2));
  64         dev->mt76.region = request->dfs_region;
  65
  66         mt7921_mutex_acquire(dev);
  67         mt76_connac_mcu_set_channel_domain(hw->priv);
  68         mt76_connac_mcu_set_rate_txpower(phy->mt76);
  69         mt7921_mutex_release(dev);
  70 }
  71
  72 static void
  73 mt7921_init_wiphy(struct ieee80211_hw *hw)
  74 {
  75         struct mt7921_phy *phy = mt7921_hw_phy(hw);
  76         struct wiphy *wiphy = hw->wiphy;
  77
  78         hw->queues = 4;
  79         hw->max_rx_aggregation_subframes = 64;
  80         hw->max_tx_aggregation_subframes = 128;
  81
  82         hw->radiotap_timestamp.units_pos =
  83                 IEEE80211_RADIOTAP_TIMESTAMP_UNIT_US;
  84
  85         phy->slottime = 9;
  86
  87         hw->sta_data_size = sizeof(struct mt7921_sta);
  88         hw->vif_data_size = sizeof(struct mt7921_vif);
  89
  90         wiphy->iface_combinations = if_comb;
  91         wiphy->n_iface_combinations = ARRAY_SIZE(if_comb);
  92         wiphy->max_scan_ie_len = MT76_CONNAC_SCAN_IE_LEN;
  93         wiphy->max_scan_ssids = 4;
  94         wiphy->max_sched_scan_plan_interval =
  95                 MT76_CONNAC_MAX_SCHED_SCAN_INTERVAL;
  96         wiphy->max_sched_scan_ie_len = IEEE80211_MAX_DATA_LEN;
  97         wiphy->max_sched_scan_ssids = MT76_CONNAC_MAX_SCHED_SCAN_SSID;
  98         wiphy->max_match_sets = MT76_CONNAC_MAX_SCAN_MATCH;
  99         wiphy->max_sched_scan_reqs = 1;
 100         wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
 101         wiphy->reg_notifier = mt7921_regd_notifier;
 102
 103         wiphy->features |= NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
 104         wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_SET_SCAN_DWELL);
 105
 106         ieee80211_hw_set(hw, SINGLE_SCAN_ON_ALL_BANDS);
 107         ieee80211_hw_set(hw, HAS_RATE_CONTROL);
 108         ieee80211_hw_set(hw, SUPPORTS_TX_ENCAP_OFFLOAD);
 109         ieee80211_hw_set(hw, WANT_MONITOR_VIF);
 110         ieee80211_hw_set(hw, SUPPORTS_PS);
 111         ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS);
 112
 113         hw->max_tx_fragments = 4;
 114 }
 115
 116 static void
 117 mt7921_mac_init_band(struct mt7921_dev *dev, u8 band)
 118 {
 119         u32 mask, set;
 120
 121         mt76_rmw_field(dev, MT_TMAC_CTCR0(band),
 122                        MT_TMAC_CTCR0_INS_DDLMT_REFTIME, 0x3f);
 123         mt76_set(dev, MT_TMAC_CTCR0(band),
 124                  MT_TMAC_CTCR0_INS_DDLMT_VHT_SMPDU_EN |
 125                  MT_TMAC_CTCR0_INS_DDLMT_EN);
 126
 127         mask = MT_MDP_RCFR0_MCU_RX_MGMT |
 128                MT_MDP_RCFR0_MCU_RX_CTL_NON_BAR |
 129                MT_MDP_RCFR0_MCU_RX_CTL_BAR;
 130         set = FIELD_PREP(MT_MDP_RCFR0_MCU_RX_MGMT, MT_MDP_TO_HIF) |
 131               FIELD_PREP(MT_MDP_RCFR0_MCU_RX_CTL_NON_BAR, MT_MDP_TO_HIF) |
 132               FIELD_PREP(MT_MDP_RCFR0_MCU_RX_CTL_BAR, MT_MDP_TO_HIF);
 133         mt76_rmw(dev, MT_MDP_BNRCFR0(band), mask, set);
 134
 135         mask = MT_MDP_RCFR1_MCU_RX_BYPASS |
 136                MT_MDP_RCFR1_RX_DROPPED_UCAST |
 137                MT_MDP_RCFR1_RX_DROPPED_MCAST;
 138         set = FIELD_PREP(MT_MDP_RCFR1_MCU_RX_BYPASS, MT_MDP_TO_HIF) |
 139               FIELD_PREP(MT_MDP_RCFR1_RX_DROPPED_UCAST, MT_MDP_TO_HIF) |
 140               FIELD_PREP(MT_MDP_RCFR1_RX_DROPPED_MCAST, MT_MDP_TO_HIF);
 141         mt76_rmw(dev, MT_MDP_BNRCFR1(band), mask, set);
 142
 143         mt76_set(dev, MT_WF_RMAC_MIB_TIME0(band), MT_WF_RMAC_MIB_RXTIME_EN);
 144         mt76_set(dev, MT_WF_RMAC_MIB_AIRTIME0(band), MT_WF_RMAC_MIB_RXTIME_EN);
 145
 146         mt76_rmw_field(dev, MT_DMA_DCR0(band), MT_DMA_DCR0_MAX_RX_LEN, 1536);
 147         /* disable rx rate report by default due to hw issues */
 148         mt76_clear(dev, MT_DMA_DCR0(band), MT_DMA_DCR0_RXD_G5_EN);
 149 }
 150
 151 void mt7921_mac_init(struct mt7921_dev *dev)
 152 {
 153         int i;
 154
 155         mt76_rmw_field(dev, MT_MDP_DCR1, MT_MDP_DCR1_MAX_RX_LEN, 1536);
 156         /* disable hardware de-agg */
 157         mt76_clear(dev, MT_MDP_DCR0, MT_MDP_DCR0_DAMSDU_EN);
 158         mt76_clear(dev, MT_MDP_DCR0, MT_MDP_DCR0_RX_HDR_TRANS_EN);
 159
 160         for (i = 0; i < MT7921_WTBL_SIZE; i++)
 161                 mt7921_mac_wtbl_update(dev, i,
 162                                        MT_WTBL_UPDATE_ADM_COUNT_CLEAR);
 163         for (i = 0; i < 2; i++)
 164                 mt7921_mac_init_band(dev, i);
 165
 166         mt76_connac_mcu_set_rts_thresh(&dev->mt76, 0x92b, 0);
 167 }
 168
 169 static int mt7921_init_hardware(struct mt7921_dev *dev)
 170 {
 171         int ret, idx;
 172
 173         ret = mt7921_dma_init(dev);
 174         if (ret)
 175                 return ret;
 176
 177         set_bit(MT76_STATE_INITIALIZED, &dev->mphy.state);
 178
 179         /* force firmware operation mode into normal state,
 180          * which should be set before firmware download stage.
 181          */
 182         mt76_wr(dev, MT_SWDEF_MODE, MT_SWDEF_NORMAL_MODE);
 183
 184         ret = mt7921_mcu_init(dev);
 185         if (ret)
 186                 return ret;
 187
 188         ret = mt7921_eeprom_init(dev);
 189         if (ret < 0)
 190                 return ret;
 191
 192         ret = mt7921_mcu_set_eeprom(dev);
 193         if (ret)
 194                 return ret;
 195
 196         /* Beacon and mgmt frames should occupy wcid 0 */
 197         idx = mt76_wcid_alloc(dev->mt76.wcid_mask, MT7921_WTBL_STA - 1);
 198         if (idx)
 199                 return -ENOSPC;
 200
 201         dev->mt76.global_wcid.idx = idx;
 202         dev->mt76.global_wcid.hw_key_idx = -1;
 203         dev->mt76.global_wcid.tx_info |= MT_WCID_TX_INFO_SET;
 204         rcu_assign_pointer(dev->mt76.wcid[idx], &dev->mt76.global_wcid);
 205
 206         mt7921_mac_init(dev);
 207
 208         return 0;
 209 }
 210
 211 int mt7921_register_device(struct mt7921_dev *dev)
 212 {
 213         struct ieee80211_hw *hw = mt76_hw(dev);
 214         int ret;
 215
 216         dev->phy.dev = dev;
 217         dev->phy.mt76 = &dev->mt76.phy;
 218         dev->mt76.phy.priv = &dev->phy;
 219         dev->mt76.tx_worker.fn = mt7921_tx_worker;
 220
 221         INIT_DELAYED_WORK(&dev->pm.ps_work, mt7921_pm_power_save_work);
 222         INIT_WORK(&dev->pm.wake_work, mt7921_pm_wake_work);
 223         spin_lock_init(&dev->pm.wake.lock);
 224         mutex_init(&dev->pm.mutex);
 225         init_waitqueue_head(&dev->pm.wait);
 226         spin_lock_init(&dev->pm.txq_lock);
 227         set_bit(MT76_STATE_PM, &dev->mphy.state);
 228         INIT_LIST_HEAD(&dev->phy.stats_list);
 229         INIT_DELAYED_WORK(&dev->mphy.mac_work, mt7921_mac_work);
 230         INIT_DELAYED_WORK(&dev->phy.scan_work, mt7921_scan_work);
 231         INIT_DELAYED_WORK(&dev->coredump.work, mt7921_coredump_work);
 232         skb_queue_head_init(&dev->phy.scan_event_list);
 233         skb_queue_head_init(&dev->coredump.msg_list);
 234         INIT_LIST_HEAD(&dev->sta_poll_list);
 235         spin_lock_init(&dev->sta_poll_lock);
 236
 237         INIT_WORK(&dev->reset_work, mt7921_mac_reset_work);
 238
 239         dev->pm.idle_timeout = MT7921_PM_TIMEOUT;
 240         dev->pm.stats.last_wake_event = jiffies;
 241         dev->pm.stats.last_doze_event = jiffies;
 242
 243         ret = mt7921_init_hardware(dev);
 244         if (ret)
 245                 return ret;
 246
 247         mt7921_init_wiphy(hw);
 248         dev->mphy.sband_2g.sband.ht_cap.cap |=
 249                         IEEE80211_HT_CAP_LDPC_CODING |
 250                         IEEE80211_HT_CAP_MAX_AMSDU;
 251         dev->mphy.sband_5g.sband.ht_cap.cap |=
 252                         IEEE80211_HT_CAP_LDPC_CODING |
 253                         IEEE80211_HT_CAP_MAX_AMSDU;
 254         dev->mphy.sband_5g.sband.vht_cap.cap |=
 255                         IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991 |
 256                         IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
 257         dev->mphy.hw->wiphy->available_antennas_rx = dev->mphy.chainmask;
 258         dev->mphy.hw->wiphy->available_antennas_tx = dev->mphy.chainmask;
 259
 260         mt76_set_stream_caps(&dev->mphy, true);
 261         mt7921_set_stream_he_caps(&dev->phy);
 262
 263         ret = mt76_register_device(&dev->mt76, true, mt7921_rates,
 264                                    ARRAY_SIZE(mt7921_rates));
 265         if (ret)
 266                 return ret;
 267
 268         return mt7921_init_debugfs(dev);
 269 }
 270
 271 void mt7921_unregister_device(struct mt7921_dev *dev)
 272 {
 273         mt76_unregister_device(&dev->mt76);
 274         mt7921_tx_token_put(dev);
 275         mt7921_dma_cleanup(dev);
 276         mt7921_mcu_exit(dev);
 277
 278         tasklet_disable(&dev->irq_tasklet);
 279         mt76_free_device(&dev->mt76);
 280 }