1 // SPDX-License-Identifier: ISC 2 /* Copyright (C) 2023 MediaTek Inc. */ 3 4 #include <linux/module.h> 5 6 #include "mt792x.h" 7 #include "mt792x_regs.h" 8 9 void mt792x_mac_work(struct work_struct *work) 10 { 11 struct mt792x_phy *phy; 12 struct mt76_phy *mphy; 13 14 mphy = (struct mt76_phy *)container_of(work, struct mt76_phy, 15 mac_work.work); 16 phy = mphy->priv; 17 18 mt792x_mutex_acquire(phy->dev); 19 20 mt76_update_survey(mphy); 21 if (++mphy->mac_work_count == 2) { 22 mphy->mac_work_count = 0; 23 24 mt792x_mac_update_mib_stats(phy); 25 } 26 27 mt792x_mutex_release(phy->dev); 28 29 mt76_tx_status_check(mphy->dev, false); 30 ieee80211_queue_delayed_work(phy->mt76->hw, &mphy->mac_work, 31 MT792x_WATCHDOG_TIME); 32 } 33 EXPORT_SYMBOL_GPL(mt792x_mac_work); 34 35 void mt792x_mac_set_timeing(struct mt792x_phy *phy) 36 { 37 s16 coverage_class = phy->coverage_class; 38 struct mt792x_dev *dev = phy->dev; 39 u32 val, reg_offset; 40 u32 cck = FIELD_PREP(MT_TIMEOUT_VAL_PLCP, 231) | 41 FIELD_PREP(MT_TIMEOUT_VAL_CCA, 48); 42 u32 ofdm = FIELD_PREP(MT_TIMEOUT_VAL_PLCP, 60) | 43 FIELD_PREP(MT_TIMEOUT_VAL_CCA, 28); 44 bool is_2ghz = phy->mt76->chandef.chan->band == NL80211_BAND_2GHZ; 45 int sifs = is_2ghz ? 10 : 16, offset; 46 47 if (!test_bit(MT76_STATE_RUNNING, &phy->mt76->state)) 48 return; 49 50 mt76_set(dev, MT_ARB_SCR(0), 51 MT_ARB_SCR_TX_DISABLE | MT_ARB_SCR_RX_DISABLE); 52 udelay(1); 53 54 offset = 3 * coverage_class; 55 reg_offset = FIELD_PREP(MT_TIMEOUT_VAL_PLCP, offset) | 56 FIELD_PREP(MT_TIMEOUT_VAL_CCA, offset); 57 58 mt76_wr(dev, MT_TMAC_CDTR(0), cck + reg_offset); 59 mt76_wr(dev, MT_TMAC_ODTR(0), ofdm + reg_offset); 60 mt76_wr(dev, MT_TMAC_ICR0(0), 61 FIELD_PREP(MT_IFS_EIFS, 360) | 62 FIELD_PREP(MT_IFS_RIFS, 2) | 63 FIELD_PREP(MT_IFS_SIFS, sifs) | 64 FIELD_PREP(MT_IFS_SLOT, phy->slottime)); 65 66 if (phy->slottime < 20 || !is_2ghz) 67 val = MT792x_CFEND_RATE_DEFAULT; 68 else 69 val = MT792x_CFEND_RATE_11B; 70 71 mt76_rmw_field(dev, MT_AGG_ACR0(0), MT_AGG_ACR_CFEND_RATE, val); 72 mt76_clear(dev, MT_ARB_SCR(0), 73 MT_ARB_SCR_TX_DISABLE | MT_ARB_SCR_RX_DISABLE); 74 } 75 EXPORT_SYMBOL_GPL(mt792x_mac_set_timeing); 76 77 void mt792x_mac_update_mib_stats(struct mt792x_phy *phy) 78 { 79 struct mt76_mib_stats *mib = &phy->mib; 80 struct mt792x_dev *dev = phy->dev; 81 int i, aggr0 = 0, aggr1; 82 u32 val; 83 84 mib->fcs_err_cnt += mt76_get_field(dev, MT_MIB_SDR3(0), 85 MT_MIB_SDR3_FCS_ERR_MASK); 86 mib->ack_fail_cnt += mt76_get_field(dev, MT_MIB_MB_BSDR3(0), 87 MT_MIB_ACK_FAIL_COUNT_MASK); 88 mib->ba_miss_cnt += mt76_get_field(dev, MT_MIB_MB_BSDR2(0), 89 MT_MIB_BA_FAIL_COUNT_MASK); 90 mib->rts_cnt += mt76_get_field(dev, MT_MIB_MB_BSDR0(0), 91 MT_MIB_RTS_COUNT_MASK); 92 mib->rts_retries_cnt += mt76_get_field(dev, MT_MIB_MB_BSDR1(0), 93 MT_MIB_RTS_FAIL_COUNT_MASK); 94 95 mib->tx_ampdu_cnt += mt76_rr(dev, MT_MIB_SDR12(0)); 96 mib->tx_mpdu_attempts_cnt += mt76_rr(dev, MT_MIB_SDR14(0)); 97 mib->tx_mpdu_success_cnt += mt76_rr(dev, MT_MIB_SDR15(0)); 98 99 val = mt76_rr(dev, MT_MIB_SDR32(0)); 100 mib->tx_pkt_ebf_cnt += FIELD_GET(MT_MIB_SDR9_EBF_CNT_MASK, val); 101 mib->tx_pkt_ibf_cnt += FIELD_GET(MT_MIB_SDR9_IBF_CNT_MASK, val); 102 103 val = mt76_rr(dev, MT_ETBF_TX_APP_CNT(0)); 104 mib->tx_bf_ibf_ppdu_cnt += FIELD_GET(MT_ETBF_TX_IBF_CNT, val); 105 mib->tx_bf_ebf_ppdu_cnt += FIELD_GET(MT_ETBF_TX_EBF_CNT, val); 106 107 val = mt76_rr(dev, MT_ETBF_RX_FB_CNT(0)); 108 mib->tx_bf_rx_fb_all_cnt += FIELD_GET(MT_ETBF_RX_FB_ALL, val); 109 mib->tx_bf_rx_fb_he_cnt += FIELD_GET(MT_ETBF_RX_FB_HE, val); 110 mib->tx_bf_rx_fb_vht_cnt += FIELD_GET(MT_ETBF_RX_FB_VHT, val); 111 mib->tx_bf_rx_fb_ht_cnt += FIELD_GET(MT_ETBF_RX_FB_HT, val); 112 113 mib->rx_mpdu_cnt += mt76_rr(dev, MT_MIB_SDR5(0)); 114 mib->rx_ampdu_cnt += mt76_rr(dev, MT_MIB_SDR22(0)); 115 mib->rx_ampdu_bytes_cnt += mt76_rr(dev, MT_MIB_SDR23(0)); 116 mib->rx_ba_cnt += mt76_rr(dev, MT_MIB_SDR31(0)); 117 118 for (i = 0; i < ARRAY_SIZE(mib->tx_amsdu); i++) { 119 val = mt76_rr(dev, MT_PLE_AMSDU_PACK_MSDU_CNT(i)); 120 mib->tx_amsdu[i] += val; 121 mib->tx_amsdu_cnt += val; 122 } 123 124 for (i = 0, aggr1 = aggr0 + 8; i < 4; i++) { 125 u32 val2; 126 127 val = mt76_rr(dev, MT_TX_AGG_CNT(0, i)); 128 val2 = mt76_rr(dev, MT_TX_AGG_CNT2(0, i)); 129 130 phy->mt76->aggr_stats[aggr0++] += val & 0xffff; 131 phy->mt76->aggr_stats[aggr0++] += val >> 16; 132 phy->mt76->aggr_stats[aggr1++] += val2 & 0xffff; 133 phy->mt76->aggr_stats[aggr1++] += val2 >> 16; 134 } 135 } 136 EXPORT_SYMBOL_GPL(mt792x_mac_update_mib_stats); 137 138 struct mt76_wcid *mt792x_rx_get_wcid(struct mt792x_dev *dev, u16 idx, 139 bool unicast) 140 { 141 struct mt792x_link_sta *link; 142 struct mt792x_sta *sta; 143 struct mt76_wcid *wcid; 144 145 if (idx >= ARRAY_SIZE(dev->mt76.wcid)) 146 return NULL; 147 148 wcid = rcu_dereference(dev->mt76.wcid[idx]); 149 if (unicast || !wcid) 150 return wcid; 151 152 if (!wcid->sta) 153 return NULL; 154 155 link = container_of(wcid, struct mt792x_link_sta, wcid); 156 sta = container_of(link, struct mt792x_sta, deflink); 157 if (!sta->vif) 158 return NULL; 159 160 return &sta->vif->sta.deflink.wcid; 161 } 162 EXPORT_SYMBOL_GPL(mt792x_rx_get_wcid); 163 164 static void 165 mt792x_mac_rssi_iter(void *priv, u8 *mac, struct ieee80211_vif *vif) 166 { 167 struct sk_buff *skb = priv; 168 struct mt76_rx_status *status = (struct mt76_rx_status *)skb->cb; 169 struct mt792x_vif *mvif = (struct mt792x_vif *)vif->drv_priv; 170 struct ieee80211_hdr *hdr = mt76_skb_get_hdr(skb); 171 172 if (status->signal > 0) 173 return; 174 175 if (!ether_addr_equal(vif->addr, hdr->addr1)) 176 return; 177 178 ewma_rssi_add(&mvif->bss_conf.rssi, -status->signal); 179 } 180 181 void mt792x_mac_assoc_rssi(struct mt792x_dev *dev, struct sk_buff *skb) 182 { 183 struct ieee80211_hdr *hdr = mt76_skb_get_hdr(skb); 184 185 if (!ieee80211_is_assoc_resp(hdr->frame_control) && 186 !ieee80211_is_auth(hdr->frame_control)) 187 return; 188 189 ieee80211_iterate_active_interfaces_atomic(mt76_hw(dev), 190 IEEE80211_IFACE_ITER_RESUME_ALL, 191 mt792x_mac_rssi_iter, skb); 192 } 193 EXPORT_SYMBOL_GPL(mt792x_mac_assoc_rssi); 194 195 void mt792x_mac_reset_counters(struct mt792x_phy *phy) 196 { 197 struct mt792x_dev *dev = phy->dev; 198 int i; 199 200 for (i = 0; i < 4; i++) { 201 mt76_rr(dev, MT_TX_AGG_CNT(0, i)); 202 mt76_rr(dev, MT_TX_AGG_CNT2(0, i)); 203 } 204 205 dev->mt76.phy.survey_time = ktime_get_boottime(); 206 memset(phy->mt76->aggr_stats, 0, sizeof(phy->mt76->aggr_stats)); 207 208 /* reset airtime counters */ 209 mt76_rr(dev, MT_MIB_SDR9(0)); 210 mt76_rr(dev, MT_MIB_SDR36(0)); 211 mt76_rr(dev, MT_MIB_SDR37(0)); 212 213 mt76_set(dev, MT_WF_RMAC_MIB_TIME0(0), MT_WF_RMAC_MIB_RXTIME_CLR); 214 mt76_set(dev, MT_WF_RMAC_MIB_AIRTIME0(0), MT_WF_RMAC_MIB_RXTIME_CLR); 215 } 216 EXPORT_SYMBOL_GPL(mt792x_mac_reset_counters); 217 218 static u8 219 mt792x_phy_get_nf(struct mt792x_phy *phy, int idx) 220 { 221 return 0; 222 } 223 224 static void 225 mt792x_phy_update_channel(struct mt76_phy *mphy, int idx) 226 { 227 struct mt792x_dev *dev = container_of(mphy->dev, struct mt792x_dev, mt76); 228 struct mt792x_phy *phy = mphy->priv; 229 struct mt76_channel_state *state; 230 u64 busy_time, tx_time, rx_time, obss_time; 231 int nf; 232 233 busy_time = mt76_get_field(dev, MT_MIB_SDR9(idx), 234 MT_MIB_SDR9_BUSY_MASK); 235 tx_time = mt76_get_field(dev, MT_MIB_SDR36(idx), 236 MT_MIB_SDR36_TXTIME_MASK); 237 rx_time = mt76_get_field(dev, MT_MIB_SDR37(idx), 238 MT_MIB_SDR37_RXTIME_MASK); 239 obss_time = mt76_get_field(dev, MT_WF_RMAC_MIB_AIRTIME14(idx), 240 MT_MIB_OBSSTIME_MASK); 241 242 nf = mt792x_phy_get_nf(phy, idx); 243 if (!phy->noise) 244 phy->noise = nf << 4; 245 else if (nf) 246 phy->noise += nf - (phy->noise >> 4); 247 248 state = mphy->chan_state; 249 state->cc_busy += busy_time; 250 state->cc_tx += tx_time; 251 state->cc_rx += rx_time + obss_time; 252 state->cc_bss_rx += rx_time; 253 state->noise = -(phy->noise >> 4); 254 } 255 256 void mt792x_update_channel(struct mt76_phy *mphy) 257 { 258 struct mt792x_dev *dev = container_of(mphy->dev, struct mt792x_dev, mt76); 259 260 if (mt76_connac_pm_wake(mphy, &dev->pm)) 261 return; 262 263 mt792x_phy_update_channel(mphy, 0); 264 /* reset obss airtime */ 265 mt76_set(dev, MT_WF_RMAC_MIB_TIME0(0), MT_WF_RMAC_MIB_RXTIME_CLR); 266 mt76_connac_power_save_sched(mphy, &dev->pm); 267 } 268 EXPORT_SYMBOL_GPL(mt792x_update_channel); 269 270 void mt792x_reset(struct mt76_dev *mdev) 271 { 272 struct mt792x_dev *dev = container_of(mdev, struct mt792x_dev, mt76); 273 struct mt76_connac_pm *pm = &dev->pm; 274 275 if (!dev->hw_init_done) 276 return; 277 278 if (dev->hw_full_reset) 279 return; 280 281 if (pm->suspended) 282 return; 283 284 queue_work(dev->mt76.wq, &dev->reset_work); 285 } 286 EXPORT_SYMBOL_GPL(mt792x_reset); 287 288 void mt792x_mac_init_band(struct mt792x_dev *dev, u8 band) 289 { 290 u32 mask, set; 291 292 mt76_rmw_field(dev, MT_TMAC_CTCR0(band), 293 MT_TMAC_CTCR0_INS_DDLMT_REFTIME, 0x3f); 294 mt76_set(dev, MT_TMAC_CTCR0(band), 295 MT_TMAC_CTCR0_INS_DDLMT_VHT_SMPDU_EN | 296 MT_TMAC_CTCR0_INS_DDLMT_EN); 297 298 mt76_set(dev, MT_WF_RMAC_MIB_TIME0(band), MT_WF_RMAC_MIB_RXTIME_EN); 299 mt76_set(dev, MT_WF_RMAC_MIB_AIRTIME0(band), MT_WF_RMAC_MIB_RXTIME_EN); 300 301 /* enable MIB tx-rx time reporting */ 302 mt76_set(dev, MT_MIB_SCR1(band), MT_MIB_TXDUR_EN); 303 mt76_set(dev, MT_MIB_SCR1(band), MT_MIB_RXDUR_EN); 304 305 mt76_rmw_field(dev, MT_DMA_DCR0(band), MT_DMA_DCR0_MAX_RX_LEN, 1536); 306 /* disable rx rate report by default due to hw issues */ 307 mt76_clear(dev, MT_DMA_DCR0(band), MT_DMA_DCR0_RXD_G5_EN); 308 309 /* filter out non-resp frames and get instantaneous signal reporting */ 310 mask = MT_WTBLOFF_TOP_RSCR_RCPI_MODE | MT_WTBLOFF_TOP_RSCR_RCPI_PARAM; 311 set = FIELD_PREP(MT_WTBLOFF_TOP_RSCR_RCPI_MODE, 0) | 312 FIELD_PREP(MT_WTBLOFF_TOP_RSCR_RCPI_PARAM, 0x3); 313 mt76_rmw(dev, MT_WTBLOFF_TOP_RSCR(band), mask, set); 314 } 315 EXPORT_SYMBOL_GPL(mt792x_mac_init_band); 316 317 void mt792x_pm_wake_work(struct work_struct *work) 318 { 319 struct mt792x_dev *dev; 320 struct mt76_phy *mphy; 321 322 dev = (struct mt792x_dev *)container_of(work, struct mt792x_dev, 323 pm.wake_work); 324 mphy = dev->phy.mt76; 325 326 if (!mt792x_mcu_drv_pmctrl(dev)) { 327 struct mt76_dev *mdev = &dev->mt76; 328 int i; 329 330 if (mt76_is_sdio(mdev)) { 331 mt76_connac_pm_dequeue_skbs(mphy, &dev->pm); 332 mt76_worker_schedule(&mdev->sdio.txrx_worker); 333 } else { 334 local_bh_disable(); 335 mt76_for_each_q_rx(mdev, i) 336 napi_schedule(&mdev->napi[i]); 337 local_bh_enable(); 338 mt76_connac_pm_dequeue_skbs(mphy, &dev->pm); 339 mt76_connac_tx_cleanup(mdev); 340 } 341 if (test_bit(MT76_STATE_RUNNING, &mphy->state)) 342 ieee80211_queue_delayed_work(mphy->hw, &mphy->mac_work, 343 MT792x_WATCHDOG_TIME); 344 } 345 346 ieee80211_wake_queues(mphy->hw); 347 wake_up(&dev->pm.wait); 348 } 349 EXPORT_SYMBOL_GPL(mt792x_pm_wake_work); 350 351 void mt792x_pm_power_save_work(struct work_struct *work) 352 { 353 struct mt792x_dev *dev; 354 unsigned long delta; 355 struct mt76_phy *mphy; 356 357 dev = (struct mt792x_dev *)container_of(work, struct mt792x_dev, 358 pm.ps_work.work); 359 mphy = dev->phy.mt76; 360 361 delta = dev->pm.idle_timeout; 362 if (test_bit(MT76_HW_SCANNING, &mphy->state) || 363 test_bit(MT76_HW_SCHED_SCANNING, &mphy->state) || 364 dev->fw_assert) 365 goto out; 366 367 if (mutex_is_locked(&dev->mt76.mutex)) 368 /* if mt76 mutex is held we should not put the device 369 * to sleep since we are currently accessing device 370 * register map. We need to wait for the next power_save 371 * trigger. 372 */ 373 goto out; 374 375 if (time_is_after_jiffies(dev->pm.last_activity + delta)) { 376 delta = dev->pm.last_activity + delta - jiffies; 377 goto out; 378 } 379 380 if (!mt792x_mcu_fw_pmctrl(dev)) { 381 cancel_delayed_work_sync(&mphy->mac_work); 382 return; 383 } 384 out: 385 queue_delayed_work(dev->mt76.wq, &dev->pm.ps_work, delta); 386 } 387 EXPORT_SYMBOL_GPL(mt792x_pm_power_save_work); 388