1 files changed, 385 insertions, 0 deletions

diff --git a/drivers/net/wireless/mediatek/mt76/mt792x_mac.c b/drivers/net/wireless/mediatek/mt76/mt792x_mac.c
new file mode 100644
index 000000000000..5d1f8229fdc1
--- /dev/null
+++ b/drivers/net/wireless/mediatek/mt76/mt792x_mac.c
@@ -0,0 +1,385 @@
+// SPDX-License-Identifier: ISC
+/* Copyright (C) 2023 MediaTek Inc. */
+
+#include <linux/module.h>
+
+#include "mt792x.h"
+#include "mt792x_regs.h"
+
+void mt792x_mac_work(struct work_struct *work)
+{
+	struct mt792x_phy *phy;
+	struct mt76_phy *mphy;
+
+	mphy = (struct mt76_phy *)container_of(work, struct mt76_phy,
+					       mac_work.work);
+	phy = mphy->priv;
+
+	mt792x_mutex_acquire(phy->dev);
+
+	mt76_update_survey(mphy);
+	if (++mphy->mac_work_count == 2) {
+		mphy->mac_work_count = 0;
+
+		mt792x_mac_update_mib_stats(phy);
+	}
+
+	mt792x_mutex_release(phy->dev);
+
+	mt76_tx_status_check(mphy->dev, false);
+	ieee80211_queue_delayed_work(phy->mt76->hw, &mphy->mac_work,
+				     MT792x_WATCHDOG_TIME);
+}
+EXPORT_SYMBOL_GPL(mt792x_mac_work);
+
+void mt792x_mac_set_timeing(struct mt792x_phy *phy)
+{
+	s16 coverage_class = phy->coverage_class;
+	struct mt792x_dev *dev = phy->dev;
+	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);
+	bool is_2ghz = phy->mt76->chandef.chan->band == NL80211_BAND_2GHZ;
+	int sifs = is_2ghz ? 10 : 16, offset;
+
+	if (!test_bit(MT76_STATE_RUNNING, &phy->mt76->state))
+		return;
+
+	mt76_set(dev, MT_ARB_SCR(0),
+		 MT_ARB_SCR_TX_DISABLE | MT_ARB_SCR_RX_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(0), cck + reg_offset);
+	mt76_wr(dev, MT_TMAC_ODTR(0), ofdm + reg_offset);
+	mt76_wr(dev, MT_TMAC_ICR0(0),
+		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_2ghz)
+		val = MT792x_CFEND_RATE_DEFAULT;
+	else
+		val = MT792x_CFEND_RATE_11B;
+
+	mt76_rmw_field(dev, MT_AGG_ACR0(0), MT_AGG_ACR_CFEND_RATE, val);
+	mt76_clear(dev, MT_ARB_SCR(0),
+		   MT_ARB_SCR_TX_DISABLE | MT_ARB_SCR_RX_DISABLE);
+}
+EXPORT_SYMBOL_GPL(mt792x_mac_set_timeing);
+
+void mt792x_mac_update_mib_stats(struct mt792x_phy *phy)
+{
+	struct mt76_mib_stats *mib = &phy->mib;
+	struct mt792x_dev *dev = phy->dev;
+	int i, aggr0 = 0, aggr1;
+	u32 val;
+
+	mib->fcs_err_cnt += mt76_get_field(dev, MT_MIB_SDR3(0),
+					   MT_MIB_SDR3_FCS_ERR_MASK);
+	mib->ack_fail_cnt += mt76_get_field(dev, MT_MIB_MB_BSDR3(0),
+					    MT_MIB_ACK_FAIL_COUNT_MASK);
+	mib->ba_miss_cnt += mt76_get_field(dev, MT_MIB_MB_BSDR2(0),
+					   MT_MIB_BA_FAIL_COUNT_MASK);
+	mib->rts_cnt += mt76_get_field(dev, MT_MIB_MB_BSDR0(0),
+				       MT_MIB_RTS_COUNT_MASK);
+	mib->rts_retries_cnt += mt76_get_field(dev, MT_MIB_MB_BSDR1(0),
+					       MT_MIB_RTS_FAIL_COUNT_MASK);
+
+	mib->tx_ampdu_cnt += mt76_rr(dev, MT_MIB_SDR12(0));
+	mib->tx_mpdu_attempts_cnt += mt76_rr(dev, MT_MIB_SDR14(0));
+	mib->tx_mpdu_success_cnt += mt76_rr(dev, MT_MIB_SDR15(0));
+
+	val = mt76_rr(dev, MT_MIB_SDR32(0));
+	mib->tx_pkt_ebf_cnt += FIELD_GET(MT_MIB_SDR9_EBF_CNT_MASK, val);
+	mib->tx_pkt_ibf_cnt += FIELD_GET(MT_MIB_SDR9_IBF_CNT_MASK, val);
+
+	val = mt76_rr(dev, MT_ETBF_TX_APP_CNT(0));
+	mib->tx_bf_ibf_ppdu_cnt += FIELD_GET(MT_ETBF_TX_IBF_CNT, val);
+	mib->tx_bf_ebf_ppdu_cnt += FIELD_GET(MT_ETBF_TX_EBF_CNT, val);
+
+	val = mt76_rr(dev, MT_ETBF_RX_FB_CNT(0));
+	mib->tx_bf_rx_fb_all_cnt += FIELD_GET(MT_ETBF_RX_FB_ALL, val);
+	mib->tx_bf_rx_fb_he_cnt += FIELD_GET(MT_ETBF_RX_FB_HE, val);
+	mib->tx_bf_rx_fb_vht_cnt += FIELD_GET(MT_ETBF_RX_FB_VHT, val);
+	mib->tx_bf_rx_fb_ht_cnt += FIELD_GET(MT_ETBF_RX_FB_HT, val);
+
+	mib->rx_mpdu_cnt += mt76_rr(dev, MT_MIB_SDR5(0));
+	mib->rx_ampdu_cnt += mt76_rr(dev, MT_MIB_SDR22(0));
+	mib->rx_ampdu_bytes_cnt += mt76_rr(dev, MT_MIB_SDR23(0));
+	mib->rx_ba_cnt += mt76_rr(dev, MT_MIB_SDR31(0));
+
+	for (i = 0; i < ARRAY_SIZE(mib->tx_amsdu); i++) {
+		val = mt76_rr(dev, MT_PLE_AMSDU_PACK_MSDU_CNT(i));
+		mib->tx_amsdu[i] += val;
+		mib->tx_amsdu_cnt += val;
+	}
+
+	for (i = 0, aggr1 = aggr0 + 8; i < 4; i++) {
+		u32 val2;
+
+		val = mt76_rr(dev, MT_TX_AGG_CNT(0, i));
+		val2 = mt76_rr(dev, MT_TX_AGG_CNT2(0, i));
+
+		phy->mt76->aggr_stats[aggr0++] += val & 0xffff;
+		phy->mt76->aggr_stats[aggr0++] += val >> 16;
+		phy->mt76->aggr_stats[aggr1++] += val2 & 0xffff;
+		phy->mt76->aggr_stats[aggr1++] += val2 >> 16;
+	}
+}
+EXPORT_SYMBOL_GPL(mt792x_mac_update_mib_stats);
+
+struct mt76_wcid *mt792x_rx_get_wcid(struct mt792x_dev *dev, u16 idx,
+				     bool unicast)
+{
+	struct mt792x_sta *sta;
+	struct mt76_wcid *wcid;
+
+	if (idx >= ARRAY_SIZE(dev->mt76.wcid))
+		return NULL;
+
+	wcid = rcu_dereference(dev->mt76.wcid[idx]);
+	if (unicast || !wcid)
+		return wcid;
+
+	if (!wcid->sta)
+		return NULL;
+
+	sta = container_of(wcid, struct mt792x_sta, wcid);
+	if (!sta->vif)
+		return NULL;
+
+	return &sta->vif->sta.wcid;
+}
+EXPORT_SYMBOL_GPL(mt792x_rx_get_wcid);
+
+static void
+mt792x_mac_rssi_iter(void *priv, u8 *mac, struct ieee80211_vif *vif)
+{
+	struct sk_buff *skb = priv;
+	struct mt76_rx_status *status = (struct mt76_rx_status *)skb->cb;
+	struct mt792x_vif *mvif = (struct mt792x_vif *)vif->drv_priv;
+	struct ieee80211_hdr *hdr = mt76_skb_get_hdr(skb);
+
+	if (status->signal > 0)
+		return;
+
+	if (!ether_addr_equal(vif->addr, hdr->addr1))
+		return;
+
+	ewma_rssi_add(&mvif->rssi, -status->signal);
+}
+
+void mt792x_mac_assoc_rssi(struct mt792x_dev *dev, struct sk_buff *skb)
+{
+	struct ieee80211_hdr *hdr = mt76_skb_get_hdr(skb);
+
+	if (!ieee80211_is_assoc_resp(hdr->frame_control) &&
+	    !ieee80211_is_auth(hdr->frame_control))
+		return;
+
+	ieee80211_iterate_active_interfaces_atomic(mt76_hw(dev),
+		IEEE80211_IFACE_ITER_RESUME_ALL,
+		mt792x_mac_rssi_iter, skb);
+}
+EXPORT_SYMBOL_GPL(mt792x_mac_assoc_rssi);
+
+void mt792x_mac_reset_counters(struct mt792x_phy *phy)
+{
+	struct mt792x_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_CNT2(0, i));
+	}
+
+	dev->mt76.phy.survey_time = ktime_get_boottime();
+	memset(phy->mt76->aggr_stats, 0, sizeof(phy->mt76->aggr_stats));
+
+	/* reset airtime counters */
+	mt76_rr(dev, MT_MIB_SDR9(0));
+	mt76_rr(dev, MT_MIB_SDR36(0));
+	mt76_rr(dev, MT_MIB_SDR37(0));
+
+	mt76_set(dev, MT_WF_RMAC_MIB_TIME0(0), MT_WF_RMAC_MIB_RXTIME_CLR);
+	mt76_set(dev, MT_WF_RMAC_MIB_AIRTIME0(0), MT_WF_RMAC_MIB_RXTIME_CLR);
+}
+EXPORT_SYMBOL_GPL(mt792x_mac_reset_counters);
+
+static u8
+mt792x_phy_get_nf(struct mt792x_phy *phy, int idx)
+{
+	return 0;
+}
+
+static void
+mt792x_phy_update_channel(struct mt76_phy *mphy, int idx)
+{
+	struct mt792x_dev *dev = container_of(mphy->dev, struct mt792x_dev, mt76);
+	struct mt792x_phy *phy = (struct mt792x_phy *)mphy->priv;
+	struct mt76_channel_state *state;
+	u64 busy_time, tx_time, rx_time, obss_time;
+	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, MT_WF_RMAC_MIB_AIRTIME14(idx),
+				   MT_MIB_OBSSTIME_MASK);
+
+	nf = mt792x_phy_get_nf(phy, 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);
+}
+
+void mt792x_update_channel(struct mt76_phy *mphy)
+{
+	struct mt792x_dev *dev = container_of(mphy->dev, struct mt792x_dev, mt76);
+
+	if (mt76_connac_pm_wake(mphy, &dev->pm))
+		return;
+
+	mt792x_phy_update_channel(mphy, 0);
+	/* reset obss airtime */
+	mt76_set(dev, MT_WF_RMAC_MIB_TIME0(0), MT_WF_RMAC_MIB_RXTIME_CLR);
+	mt76_connac_power_save_sched(mphy, &dev->pm);
+}
+EXPORT_SYMBOL_GPL(mt792x_update_channel);
+
+void mt792x_reset(struct mt76_dev *mdev)
+{
+	struct mt792x_dev *dev = container_of(mdev, struct mt792x_dev, mt76);
+	struct mt76_connac_pm *pm = &dev->pm;
+
+	if (!dev->hw_init_done)
+		return;
+
+	if (dev->hw_full_reset)
+		return;
+
+	if (pm->suspended)
+		return;
+
+	queue_work(dev->mt76.wq, &dev->reset_work);
+}
+EXPORT_SYMBOL_GPL(mt792x_reset);
+
+void mt792x_mac_init_band(struct mt792x_dev *dev, u8 band)
+{
+	u32 mask, set;
+
+	mt76_rmw_field(dev, MT_TMAC_CTCR0(band),
+		       MT_TMAC_CTCR0_INS_DDLMT_REFTIME, 0x3f);
+	mt76_set(dev, MT_TMAC_CTCR0(band),
+		 MT_TMAC_CTCR0_INS_DDLMT_VHT_SMPDU_EN |
+		 MT_TMAC_CTCR0_INS_DDLMT_EN);
+
+	mt76_set(dev, MT_WF_RMAC_MIB_TIME0(band), MT_WF_RMAC_MIB_RXTIME_EN);
+	mt76_set(dev, MT_WF_RMAC_MIB_AIRTIME0(band), MT_WF_RMAC_MIB_RXTIME_EN);
+
+	/* enable MIB tx-rx time reporting */
+	mt76_set(dev, MT_MIB_SCR1(band), MT_MIB_TXDUR_EN);
+	mt76_set(dev, MT_MIB_SCR1(band), MT_MIB_RXDUR_EN);
+
+	mt76_rmw_field(dev, MT_DMA_DCR0(band), MT_DMA_DCR0_MAX_RX_LEN, 1536);
+	/* disable rx rate report by default due to hw issues */
+	mt76_clear(dev, MT_DMA_DCR0(band), MT_DMA_DCR0_RXD_G5_EN);
+
+	/* filter out non-resp frames and get instantaneous signal reporting */
+	mask = MT_WTBLOFF_TOP_RSCR_RCPI_MODE | MT_WTBLOFF_TOP_RSCR_RCPI_PARAM;
+	set = FIELD_PREP(MT_WTBLOFF_TOP_RSCR_RCPI_MODE, 0) |
+	      FIELD_PREP(MT_WTBLOFF_TOP_RSCR_RCPI_PARAM, 0x3);
+	mt76_rmw(dev, MT_WTBLOFF_TOP_RSCR(band), mask, set);
+}
+EXPORT_SYMBOL_GPL(mt792x_mac_init_band);
+
+void mt792x_pm_wake_work(struct work_struct *work)
+{
+	struct mt792x_dev *dev;
+	struct mt76_phy *mphy;
+
+	dev = (struct mt792x_dev *)container_of(work, struct mt792x_dev,
+						pm.wake_work);
+	mphy = dev->phy.mt76;
+
+	if (!mt792x_mcu_drv_pmctrl(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_connac_tx_cleanup(mdev);
+		}
+		if (test_bit(MT76_STATE_RUNNING, &mphy->state))
+			ieee80211_queue_delayed_work(mphy->hw, &mphy->mac_work,
+						     MT792x_WATCHDOG_TIME);
+	}
+
+	ieee80211_wake_queues(mphy->hw);
+	wake_up(&dev->pm.wait);
+}
+EXPORT_SYMBOL_GPL(mt792x_pm_wake_work);
+
+void mt792x_pm_power_save_work(struct work_struct *work)
+{
+	struct mt792x_dev *dev;
+	unsigned long delta;
+	struct mt76_phy *mphy;
+
+	dev = (struct mt792x_dev *)container_of(work, struct mt792x_dev,
+						pm.ps_work.work);
+	mphy = dev->phy.mt76;
+
+	delta = dev->pm.idle_timeout;
+	if (test_bit(MT76_HW_SCANNING, &mphy->state) ||
+	    test_bit(MT76_HW_SCHED_SCANNING, &mphy->state) ||
+	    dev->fw_assert)
+		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 (!mt792x_mcu_fw_pmctrl(dev)) {
+		cancel_delayed_work_sync(&mphy->mac_work);
+		return;
+	}
+out:
+	queue_delayed_work(dev->mt76.wq, &dev->pm.ps_work, delta);
+}
+EXPORT_SYMBOL_GPL(mt792x_pm_power_save_work);