diff options
| author | Chad Monroe <chad@monroe.io> | 2024-11-26 04:52:58 +0000 |
|---|---|---|
| committer | Felix Fietkau <nbd@nbd.name> | 2025-01-14 13:34:34 +0100 |
| commit | c693723bb5dba0f04c3e75703c91f733a0a637c8 (patch) | |
| tree | ec73f2f3ccd1f9ed45471b02f9514717f6de64c6 | |
| parent | 64d571742b0ae44eee5efd51e2d4a09d7f6782fc (diff) | |
wifi: mt76: mt7915: exclude tx backoff time from airtime
This helps to make STA airtime counters more accurate.
Signed-off-by: Chad Monroe <chad@monroe.io>
Suggested-by: Ryder Lee <ryder.lee@mediatek.com>
Link: https://patch.msgid.link/026380cec180261956b983cbdb009605867bcd8d.1732596478.git.chad@monroe.io
Signed-off-by: Felix Fietkau <nbd@nbd.name>
4 files changed, 25 insertions, 2 deletions
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/init.c b/drivers/net/wireless/mediatek/mt76/mt7915/init.c index bc983ab10b0c..4282857d8ce9 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7915/init.c +++ b/drivers/net/wireless/mediatek/mt76/mt7915/init.c @@ -512,6 +512,15 @@ mt7915_mac_init_band(struct mt7915_dev *dev, u8 band) mt76_clear(dev, MT_WF_RMAC_MIB_AIRTIME4(band), MT_WF_RMAC_MIB_QOS23_BACKOFF); + /* clear backoff time for Tx duration */ + mt76_clear(dev, MT_WTBLOFF_TOP_ACR(band), + MT_WTBLOFF_TOP_ADM_BACKOFFTIME); + + /* exclude estimated backoff time for Tx duration on MT7915 */ + if (is_mt7915(&dev->mt76)) + mt76_set(dev, MT_AGG_ATCR0(band), + MT_AGG_ATCR_MAC_BFF_TIME_EN); + /* clear backoff time and set software compensation for OBSS time */ mask = MT_WF_RMAC_MIB_OBSS_BACKOFF | MT_WF_RMAC_MIB_ED_OFFSET; set = FIELD_PREP(MT_WF_RMAC_MIB_OBSS_BACKOFF, 0) | diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c index 87d0dd040001..35af41b5bad6 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c +++ b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c @@ -3150,8 +3150,13 @@ int mt7915_mcu_get_chan_mib_info(struct mt7915_phy *phy, bool chan_switch) res = (struct mt7915_mcu_mib *)(skb->data + offs_cc); #define __res_u64(s) le64_to_cpu(res[s].data) - /* subtract Tx backoff time from Tx duration */ - cc_tx = is_mt7915(&dev->mt76) ? __res_u64(1) - __res_u64(4) : __res_u64(1); + /* subtract Tx backoff time from Tx duration for MT7915 */ + if (is_mt7915(&dev->mt76)) { + u64 backoff = (__res_u64(4) & 0xffff) * 79; /* 16us + 9us * 7 */ + cc_tx = __res_u64(1) - backoff; + } else { + cc_tx = __res_u64(1); + } if (chan_switch) goto out; diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mmio.c b/drivers/net/wireless/mediatek/mt76/mt7915/mmio.c index 44e112b8b5b3..530182e20ce2 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7915/mmio.c +++ b/drivers/net/wireless/mediatek/mt76/mt7915/mmio.c @@ -138,6 +138,7 @@ static const u32 mt7915_offs[] = { [AGG_ACR0] = 0x084, [AGG_ACR4] = 0x08c, [AGG_MRCR] = 0x098, + [AGG_ATCR0] = 0x0ec, [AGG_ATCR1] = 0x0f0, [AGG_ATCR3] = 0x0f4, [LPON_UTTR0] = 0x080, @@ -212,6 +213,7 @@ static const u32 mt7916_offs[] = { [AGG_ACR0] = 0x054, [AGG_ACR4] = 0x05c, [AGG_MRCR] = 0x068, + [AGG_ATCR0] = 0x1a4, [AGG_ATCR1] = 0x1a8, [AGG_ATCR3] = 0x080, [LPON_UTTR0] = 0x360, diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/regs.h b/drivers/net/wireless/mediatek/mt76/mt7915/regs.h index 89ac8e6707b8..c5ec63a25a42 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7915/regs.h +++ b/drivers/net/wireless/mediatek/mt76/mt7915/regs.h @@ -66,6 +66,7 @@ enum offs_rev { AGG_ACR0, AGG_ACR4, AGG_MRCR, + AGG_ATCR0, AGG_ATCR1, AGG_ATCR3, LPON_UTTR0, @@ -254,6 +255,9 @@ enum offs_rev { #define MT_WTBLOFF_TOP_RSCR_RCPI_MODE GENMASK(31, 30) #define MT_WTBLOFF_TOP_RSCR_RCPI_PARAM GENMASK(25, 24) +#define MT_WTBLOFF_TOP_ACR(_band) MT_WTBLOFF_TOP(_band, 0x010) +#define MT_WTBLOFF_TOP_ADM_BACKOFFTIME BIT(29) + /* ETBF: band 0(0x820ea000), band 1(0x820fa000) */ #define MT_WF_ETBF_BASE(_band) ((_band) ? 0x820fa000 : 0x820ea000) #define MT_WF_ETBF(_band, ofs) (MT_WF_ETBF_BASE(_band) + (ofs)) @@ -505,6 +509,9 @@ enum offs_rev { #define MT_AGG_MRCR_RTS_FAIL_LIMIT GENMASK(11, 7) #define MT_AGG_MRCR_TXCMD_RTS_FAIL_LIMIT GENMASK(28, 24) +#define MT_AGG_ATCR0(_band) MT_WF_AGG(_band, __OFFS(AGG_ATCR0)) +#define MT_AGG_ATCR_MAC_BFF_TIME_EN BIT(30) + #define MT_AGG_ATCR1(_band) MT_WF_AGG(_band, __OFFS(AGG_ATCR1)) #define MT_AGG_ATCR3(_band) MT_WF_AGG(_band, __OFFS(AGG_ATCR3)) |