From ea5d99d07fbff328f2ed56733178608fa1add793 Mon Sep 17 00:00:00 2001 From: Ryder Lee Date: Thu, 1 Dec 2022 11:44:43 +0800 Subject: [PATCH] wifi: mt76: mt7996: enable ack signal support This reports signal strength of ACK packets from the peer as measured at each interface. Signed-off-by: Ryder Lee Signed-off-by: Felix Fietkau --- .../net/wireless/mediatek/mt76/mt7996/init.c | 7 +++++++ .../net/wireless/mediatek/mt76/mt7996/mac.c | 19 ++++++++++++++++++- .../net/wireless/mediatek/mt76/mt7996/main.c | 8 ++++++++ .../net/wireless/mediatek/mt76/mt7996/mmio.c | 17 +++++++++-------- .../wireless/mediatek/mt76/mt7996/mt7996.h | 5 +++++ .../net/wireless/mediatek/mt76/mt7996/regs.h | 17 +++++++++++++---- 6 files changed, 60 insertions(+), 13 deletions(-) diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/init.c b/drivers/net/wireless/mediatek/mt76/mt7996/init.c index cd1657e3585d..46b290526092 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7996/init.c +++ b/drivers/net/wireless/mediatek/mt76/mt7996/init.c @@ -180,6 +180,7 @@ mt7996_init_wiphy(struct ieee80211_hw *hw) wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_BEACON_RATE_HE); wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_UNSOL_BCAST_PROBE_RESP); wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_FILS_DISCOVERY); + wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_ACK_SIGNAL_SUPPORT); if (!mdev->dev->of_node || !of_property_read_bool(mdev->dev->of_node, @@ -240,6 +241,12 @@ mt7996_mac_init_band(struct mt7996_dev *dev, u8 band) set = FIELD_PREP(MT_WF_RMAC_MIB_OBSS_BACKOFF, 0) | FIELD_PREP(MT_WF_RMAC_MIB_ED_OFFSET, 4); mt76_rmw(dev, MT_WF_RMAC_MIB_AIRTIME0(band), mask, set); + + /* filter out non-resp frames and get instanstaeous signal reporting */ + mask = MT_WTBLOFF_RSCR_RCPI_MODE | MT_WTBLOFF_RSCR_RCPI_PARAM; + set = FIELD_PREP(MT_WTBLOFF_RSCR_RCPI_MODE, 0) | + FIELD_PREP(MT_WTBLOFF_RSCR_RCPI_PARAM, 0x3); + mt76_rmw(dev, MT_WTBLOFF_RSCR(band), mask, set); } static void mt7996_mac_init(struct mt7996_dev *dev) diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/mac.c b/drivers/net/wireless/mediatek/mt76/mt7996/mac.c index 9e6aa9c3e566..0b3e28748e76 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7996/mac.c +++ b/drivers/net/wireless/mediatek/mt76/mt7996/mac.c @@ -10,7 +10,7 @@ #include "mac.h" #include "mcu.h" -#define to_rssi(field, rxv) ((FIELD_GET(field, rxv) - 220) / 2) +#define to_rssi(field, rcpi) ((FIELD_GET(field, rcpi) - 220) / 2) #define HE_BITS(f) cpu_to_le16(IEEE80211_RADIOTAP_HE_##f) #define HE_PREP(f, m, v) le16_encode_bits(le32_get_bits(v, MT_CRXV_HE_##m),\ @@ -124,6 +124,7 @@ static void mt7996_mac_sta_poll(struct mt7996_dev *dev) bool clear = false; u32 addr, val; u16 idx; + s8 rssi[4]; u8 bw; spin_lock_bh(&dev->sta_poll_lock); @@ -137,6 +138,8 @@ static void mt7996_mac_sta_poll(struct mt7996_dev *dev) spin_unlock_bh(&dev->sta_poll_lock); idx = msta->wcid.idx; + + /* refresh peer's airtime reporting */ addr = mt7996_mac_wtbl_lmac_addr(dev, idx, 20); for (i = 0; i < IEEE80211_NUM_ACS; i++) { @@ -213,6 +216,20 @@ static void mt7996_mac_sta_poll(struct mt7996_dev *dev) else rate->flags &= ~RATE_INFO_FLAGS_SHORT_GI; } + + /* get signal strength of resp frames (CTS/BA/ACK) */ + addr = mt7996_mac_wtbl_lmac_addr(dev, idx, 34); + val = mt76_rr(dev, addr); + + rssi[0] = to_rssi(GENMASK(7, 0), val); + rssi[1] = to_rssi(GENMASK(15, 8), val); + rssi[2] = to_rssi(GENMASK(23, 16), val); + rssi[3] = to_rssi(GENMASK(31, 14), val); + + msta->ack_signal = + mt76_rx_signal(msta->vif->phy->mt76->antenna_mask, rssi); + + ewma_avg_signal_add(&msta->avg_ack_signal, -msta->ack_signal); } rcu_read_unlock(); diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/main.c b/drivers/net/wireless/mediatek/mt76/mt7996/main.c index d43530a9786b..f2129be25d99 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7996/main.c +++ b/drivers/net/wireless/mediatek/mt76/mt7996/main.c @@ -595,6 +595,8 @@ int mt7996_mac_sta_add(struct mt76_dev *mdev, struct ieee80211_vif *vif, msta->wcid.tx_info |= MT_WCID_TX_INFO_SET; msta->jiffies = jiffies; + ewma_avg_signal_init(&msta->avg_ack_signal); + mt7996_mac_wtbl_update(dev, idx, MT_WTBL_UPDATE_ADM_COUNT_CLEAR); @@ -917,6 +919,12 @@ static void mt7996_sta_statistics(struct ieee80211_hw *hw, } sinfo->txrate.flags = txrate->flags; sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_BITRATE); + + sinfo->ack_signal = (s8)msta->ack_signal; + sinfo->filled |= BIT_ULL(NL80211_STA_INFO_ACK_SIGNAL); + + sinfo->avg_ack_signal = -(s8)ewma_avg_signal_read(&msta->avg_ack_signal); + sinfo->filled |= BIT_ULL(NL80211_STA_INFO_ACK_SIGNAL_AVG); } static void mt7996_sta_rc_work(void *data, struct ieee80211_sta *sta) diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/mmio.c b/drivers/net/wireless/mediatek/mt76/mt7996/mmio.c index 0d097cda4da7..521769eb6b0e 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7996/mmio.c +++ b/drivers/net/wireless/mediatek/mt76/mt7996/mmio.c @@ -12,14 +12,15 @@ #include "../trace.h" static const struct __base mt7996_reg_base[] = { - [WF_AGG_BASE] = { { 0x820e2000, 0x820f2000, 0x830e2000 } }, - [WF_MIB_BASE] = { { 0x820ed000, 0x820fd000, 0x830ed000 } }, - [WF_TMAC_BASE] = { { 0x820e4000, 0x820f4000, 0x830e4000 } }, - [WF_RMAC_BASE] = { { 0x820e5000, 0x820f5000, 0x830e5000 } }, - [WF_ARB_BASE] = { { 0x820e3000, 0x820f3000, 0x830e3000 } }, - [WF_LPON_BASE] = { { 0x820eb000, 0x820fb000, 0x830eb000 } }, - [WF_ETBF_BASE] = { { 0x820ea000, 0x820fa000, 0x830ea000 } }, - [WF_DMA_BASE] = { { 0x820e7000, 0x820f7000, 0x830e7000 } }, + [WF_AGG_BASE] = { { 0x820e2000, 0x820f2000, 0x830e2000 } }, + [WF_ARB_BASE] = { { 0x820e3000, 0x820f3000, 0x830e3000 } }, + [WF_TMAC_BASE] = { { 0x820e4000, 0x820f4000, 0x830e4000 } }, + [WF_RMAC_BASE] = { { 0x820e5000, 0x820f5000, 0x830e5000 } }, + [WF_DMA_BASE] = { { 0x820e7000, 0x820f7000, 0x830e7000 } }, + [WF_WTBLOFF_BASE] = { { 0x820e9000, 0x820f9000, 0x830e9000 } }, + [WF_ETBF_BASE] = { { 0x820ea000, 0x820fa000, 0x830ea000 } }, + [WF_LPON_BASE] = { { 0x820eb000, 0x820fb000, 0x830eb000 } }, + [WF_MIB_BASE] = { { 0x820ed000, 0x820fd000, 0x830ed000 } }, }; static const struct __map mt7996_reg_map[] = { diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/mt7996.h b/drivers/net/wireless/mediatek/mt76/mt7996/mt7996.h index 00c58878524e..17dcd05d3459 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7996/mt7996.h +++ b/drivers/net/wireless/mediatek/mt76/mt7996/mt7996.h @@ -85,6 +85,8 @@ struct mt7996_twt_flow { u8 sched:1; }; +DECLARE_EWMA(avg_signal, 10, 8) + struct mt7996_sta { struct mt76_wcid wcid; /* must be first */ @@ -94,6 +96,9 @@ struct mt7996_sta { struct list_head rc_list; u32 airtime_ac[8]; + int ack_signal; + struct ewma_avg_signal avg_ack_signal; + unsigned long changed; unsigned long jiffies; unsigned long ampdu_state; diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/regs.h b/drivers/net/wireless/mediatek/mt76/mt7996/regs.h index 1d53611da4d8..794f61b93a46 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7996/regs.h +++ b/drivers/net/wireless/mediatek/mt76/mt7996/regs.h @@ -25,13 +25,14 @@ struct mt7996_reg_desc { enum base_rev { WF_AGG_BASE, - WF_MIB_BASE, + WF_ARB_BASE, WF_TMAC_BASE, WF_RMAC_BASE, - WF_ARB_BASE, - WF_LPON_BASE, - WF_ETBF_BASE, WF_DMA_BASE, + WF_WTBLOFF_BASE, + WF_ETBF_BASE, + WF_LPON_BASE, + WF_MIB_BASE, __MT_REG_BASE_MAX, }; @@ -97,6 +98,14 @@ enum base_rev { #define MT_DMA_TCRF1(_band) MT_WF_DMA(_band, 0x054) #define MT_DMA_TCRF1_QIDX GENMASK(15, 13) +/* WTBLOFF TOP: band 0(0x820e9000), band 1(0x820f9000), band 2(0x830e9000) */ +#define MT_WTBLOFF_BASE(_band) __BASE(WF_WTBLOFF_BASE, (_band)) +#define MT_WTBLOFF(_band, ofs) (MT_WTBLOFF_BASE(_band) + (ofs)) + +#define MT_WTBLOFF_RSCR(_band) MT_WTBLOFF(_band, 0x008) +#define MT_WTBLOFF_RSCR_RCPI_MODE GENMASK(31, 30) +#define MT_WTBLOFF_RSCR_RCPI_PARAM GENMASK(25, 24) + /* ETBF: band 0(0x820ea000), band 1(0x820fa000), band 2(0x830ea000) */ #define MT_WF_ETBF_BASE(_band) __BASE(WF_ETBF_BASE, (_band)) #define MT_WF_ETBF(_band, ofs) (MT_WF_ETBF_BASE(_band) + (ofs)) -- 2.39.5