From 9aac2969fe5f8c3d7a827b73e4fe904e0abce9c2 Mon Sep 17 00:00:00 2001
From: Ryder Lee <ryder.lee@mediatek.com>
Date: Mon, 16 Aug 2021 08:32:26 +0800
Subject: [PATCH] mt76: mt7915: update mac timing settings
Git-commit: 9aac2969fe5f8c3d7a827b73e4fe904e0abce9c2
Patch-mainline: v5.16-rc1
References: bsc#1209980
1. EIFS has been divided into OFDM/CCK fields after 11ax generation.
2. For 5G/6G SIFS setting, hardware counts extra 6us for OFDM.
Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/net/wireless/mediatek/mt76/mt7915/mac.c | 14 ++++++--------
drivers/net/wireless/mediatek/mt76/mt7915/regs.h | 5 ++++-
2 files changed, 10 insertions(+), 9 deletions(-)
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mac.c b/drivers/net/wireless/mediatek/mt76/mt7915/mac.c
index dfc5ea2cf7d0..5439fa766182 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/mac.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/mac.c
@@ -1572,17 +1572,12 @@ 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 sifs, offset;
+ int offset;
bool is_5ghz = phy->mt76->chandef.chan->band == NL80211_BAND_5GHZ;
if (!test_bit(MT76_STATE_RUNNING, &phy->mt76->state))
return;
- if (is_5ghz)
- sifs = 16;
- else
- sifs = 10;
-
if (ext_phy) {
coverage_class = max_t(s16, dev->phy.coverage_class,
coverage_class);
@@ -1604,11 +1599,14 @@ void mt7915_mac_set_timing(struct mt7915_phy *phy)
mt76_wr(dev, MT_TMAC_CDTR(ext_phy), cck + reg_offset);
mt76_wr(dev, MT_TMAC_ODTR(ext_phy), ofdm + reg_offset);
mt76_wr(dev, MT_TMAC_ICR0(ext_phy),
- FIELD_PREP(MT_IFS_EIFS, 360) |
+ FIELD_PREP(MT_IFS_EIFS_OFDM, is_5ghz ? 84 : 78) |
FIELD_PREP(MT_IFS_RIFS, 2) |
- FIELD_PREP(MT_IFS_SIFS, sifs) |
+ FIELD_PREP(MT_IFS_SIFS, 10) |
FIELD_PREP(MT_IFS_SLOT, phy->slottime));
+ mt76_wr(dev, MT_TMAC_ICR1(ext_phy),
+ FIELD_PREP(MT_IFS_EIFS_CCK, 314));
+
if (phy->slottime < 20 || is_5ghz)
val = MT7915_CFEND_RATE_DEFAULT;
else
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/regs.h b/drivers/net/wireless/mediatek/mt76/mt7915/regs.h
index a213b5cb82f8..91c1fb56b0ed 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/regs.h
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/regs.h
@@ -72,11 +72,14 @@
#define MT_TMAC_TRCR0_I2T_CHK GENMASK(24, 16)
#define MT_TMAC_ICR0(_band) MT_WF_TMAC(_band, 0x0a4)
-#define MT_IFS_EIFS GENMASK(8, 0)
+#define MT_IFS_EIFS_OFDM GENMASK(8, 0)
#define MT_IFS_RIFS GENMASK(14, 10)
#define MT_IFS_SIFS GENMASK(22, 16)
#define MT_IFS_SLOT GENMASK(30, 24)
+#define MT_TMAC_ICR1(_band) MT_WF_TMAC(_band, 0x0b4)
+#define MT_IFS_EIFS_CCK GENMASK(8, 0)
+
#define MT_TMAC_CTCR0(_band) MT_WF_TMAC(_band, 0x0f4)
#define MT_TMAC_CTCR0_INS_DDLMT_REFTIME GENMASK(5, 0)
#define MT_TMAC_CTCR0_INS_DDLMT_EN BIT(17)
--
2.35.3