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wifi: mt76: mt7915: fix mt7915_mac_set_timing()

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Correct mac timiing settings for different hardware generations.
This improves 40-60Mbps performance.

Fixes: 9aac2969fe ("mt76: mt7915: update mac timing settings")
Reported-By: Carson Vandegriffe <carson.vandegriffe@candelatech.com>
Tested-by: Chad Monroe <chad.monroe@smartrg.com>
Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
This commit is contained in:
Ryder Lee
2022-10-01 09:42:44 +08:00
committed by Felix Fietkau
parent 7a12e06dac
commit 0c881dc08f
1 changed files with 15 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files

21
drivers/net/wireless/mediatek/mt76/mt7915/mac.c
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@@ -1153,7 +1153,7 @@ void mt7915_mac_set_timing(struct mt7915_phy *phy)
FIELD_PREP(MT_TIMEOUT_VAL_CCA, 48);
u32 ofdm = FIELD_PREP(MT_TIMEOUT_VAL_PLCP, 60) |
FIELD_PREP(MT_TIMEOUT_VAL_CCA, 28);
int offset;
int eifs_ofdm = 360, sifs = 10, offset;
bool a_band = !(phy->mt76->chandef.chan->band == NL80211_BAND_2GHZ);
if (!test_bit(MT76_STATE_RUNNING, &phy->mt76->state))
@@ -1171,17 +1171,26 @@ void mt7915_mac_set_timing(struct mt7915_phy *phy)
reg_offset = FIELD_PREP(MT_TIMEOUT_VAL_PLCP, offset) |
FIELD_PREP(MT_TIMEOUT_VAL_CCA, offset);
if (!is_mt7915(&dev->mt76)) {
if (!a_band) {
mt76_wr(dev, MT_TMAC_ICR1(phy->band_idx),
FIELD_PREP(MT_IFS_EIFS_CCK, 314));
eifs_ofdm = 78;
} else {
eifs_ofdm = 84;
}
} else if (a_band) {
sifs = 16;
}
mt76_wr(dev, MT_TMAC_CDTR(phy->band_idx), cck + reg_offset);
mt76_wr(dev, MT_TMAC_ODTR(phy->band_idx), ofdm + reg_offset);
mt76_wr(dev, MT_TMAC_ICR0(phy->band_idx),
FIELD_PREP(MT_IFS_EIFS_OFDM, a_band ? 84 : 78) |
FIELD_PREP(MT_IFS_EIFS_OFDM, eifs_ofdm) |
FIELD_PREP(MT_IFS_RIFS, 2) |
FIELD_PREP(MT_IFS_SIFS, 10) |
FIELD_PREP(MT_IFS_SIFS, sifs) |
FIELD_PREP(MT_IFS_SLOT, phy->slottime));
mt76_wr(dev, MT_TMAC_ICR1(phy->band_idx),
FIELD_PREP(MT_IFS_EIFS_CCK, 314));
if (phy->slottime < 20 || a_band)
val = MT7915_CFEND_RATE_DEFAULT;
else