[PATCH v2 00/13] wifi: mt76: mt7925: add MT7927 (Filogic 380) support

[PATCH v2 00/13] wifi: mt76: mt7925: add MT7927 (Filogic 380) support

[Javier Tia]

This series adds support for the MediaTek MT7927 (Filogic 380) combo
WiFi 7 + BT 5.4 module to the mt7925 driver. The MT7927 uses PCI ID
14c3:7927 (some hardware reports 14c3:6639) and shares the mt7925
firmware interface but requires different DMA ring layout, IRQ mapping,
chip initialization, and power management handling.

Tested hardware:
- ASUS ROG Crosshair X870E Hero (BT 0489:e13a, WiFi 14c3:6639)
- ASUS ProArt X870E-Creator WiFi (BT 0489:e13a / 13d3:3588, WiFi 14c3:6639)
- ASUS ROG Strix X870E-E (BT 0489:e13a, WiFi 14c3:7927)
- Gigabyte X870E Aorus Master X3D (BT 0489:e10f, WiFi 14c3:7927)
- Gigabyte Z790 AORUS MASTER X (BT 0489:e10f, WiFi 14c3:7927)
- Lenovo Legion Pro 7 16ARX9 (BT 0489:e0fa, WiFi 14c3:7927)
- TP-Link Archer TBE550E PCIe (BT 0489:e116, WiFi 14c3:7927)
- EDUP EP-MT7927BE M.2 card (WiFi 14c3:7927)
- Foxconn/Azurewave M.2 modules (WiFi 14c3:6639)
- AMD RZ738 reference design (WiFi 14c3:0738)

Tested on Arch Linux, CachyOS, EndeavourOS, Fedora (Bazzite), NixOS,
openSUSE Tumbleweed, and Ubuntu across kernels 6.13-6.19.

What works:
- WiFi 7 with EHT 320MHz on 2.4/5/6 GHz bands
- 320MHz data path verified at 841 Mbps (iperf3 -t30 -P8)
- PCIe initialization with CBTOP remap and MT7927-specific DMA layout
- Runtime power management and suspend/resume (S3)
- DBDC (dual-band concurrent) mode
- Explicit band_idx assignment for stable 5GHz/6GHz operation
- ASPM disabled for MT7927 to prevent throughput collapse

Known limitations (planned as follow-up series):
- mac_reset returns -EOPNOTSUPP (DMA recovery not yet implemented)
- MLO (Multi-Link Operation): tested working on 5GHz+2.4GHz STR
  (776 Mbps) but requires additional patches for link lifetime
  and error handling. Sean Wang's series [1] addresses these;
  MLO support will be submitted as a follow-up on top of that.
- TX retransmissions: elevated retry rate on all bands, firmware-side
  rate adaptation issue not addressable in the driver.

[1] https://lore.kernel.org/linux-wireless/20260306232238.2039675-1-sean.wang@kernel.org/

Patches 1-5 add generic 320MHz EHT support (no MT7927 references).
Patches 6-7 introduce MT7927 chip ID helpers and firmware paths.
Patch 8 adds per-chip IRQ map handling.
Patch 9 introduces mt792x_dma_config struct for chip-specific DMA.
Patch 10 combines CBTOP remap, chip init, DBDC, CNM, and mac_reset.
Patch 11 adds mt7925_band_idx() helper for stable 5/6 GHz operation.
Patch 12 enables runtime PM and disables ASPM.
Patch 13 enables the MT7927 PCI device table entries.

The WiFi firmware path and filename in linux-firmware have not been
finalized yet. The driver currently requests mediatek/mt6639/ (the
mobile SoC codename), but this may change based on the linux-firmware
review.

Changes since v1 (suggested by Sean Wang):
- Reorganized from 18 patches into 13 across 8 logical groups
- Common 320MHz patches first, chip-specific changes later
- Introduced mt792x_dma_config struct to reuse mt7925_dma_init()
  instead of duplicating as mt7927_dma_init()
- Replaced is_mt7927() with is_320mhz_supported() in common patches
- Added mt7925_band_idx() helper replacing scattered if/else patterns
- Renamed MT7927-specific registers with MT7927_ prefix
- Added PCI ID 0x0738 for AMD RZ738 hardware
- Moved GLO_CFG_EXT1 register address into dma_config struct to
  eliminate is_mt7927() from shared mt792x_dma.c

Link to v1: https://lore.kernel.org/linux-wireless/20260306-mt7927-wifi-support-v1-0-c77e7445511d@jetm.me/

Assisted-by: Claude (Anthropic)
Signed-off-by: Javier Tia <floss@jetm.me>
---
Javier Tia (13):
      wifi: mt76: mt7925: fix stale pointer comparisons in change_vif_links
      wifi: mt76: mt7925: add 320MHz bandwidth to bss_rlm_tlv
      wifi: mt76: mt7925: handle 320MHz bandwidth in RXV and TXS
      wifi: mt76: mt7925: populate EHT 320MHz MCS map in sta_rec
      wifi: mt76: mt7925: advertise EHT 320MHz capabilities for 6GHz band
      wifi: mt76: mt7925: add MT7927 chip ID helpers
      wifi: mt76: mt7925: add MT7927 firmware paths
      wifi: mt76: mt7925: use irq_map for chip-specific interrupt handling
      wifi: mt76: mt7925: add chip-specific DMA configuration
      wifi: mt76: mt7925: add MT7927 hardware initialization
      wifi: mt76: mt7925: fix band_idx for stable 5GHz/6GHz operation
      wifi: mt76: mt7925: enable low power support for MT7927
      wifi: mt76: mt7925: enable MT7927 PCI device IDs

 drivers/net/wireless/mediatek/mt76/mt76_connac.h   |  13 +-
 drivers/net/wireless/mediatek/mt76/mt7925/init.c   |  13 +
 drivers/net/wireless/mediatek/mt76/mt7925/mac.c    |   9 +
 drivers/net/wireless/mediatek/mt76/mt7925/main.c   |  67 ++++-
 drivers/net/wireless/mediatek/mt76/mt7925/mcu.c    |  55 +++-
 drivers/net/wireless/mediatek/mt76/mt7925/mt7925.h |   7 +
 drivers/net/wireless/mediatek/mt76/mt7925/pci.c    | 277 +++++++++++++++++++--
 .../net/wireless/mediatek/mt76/mt7925/pci_mac.c    |  14 +-
 .../net/wireless/mediatek/mt76/mt7925/pci_mcu.c    |  20 +-
 drivers/net/wireless/mediatek/mt76/mt792x.h        |  27 ++
 drivers/net/wireless/mediatek/mt76/mt792x_dma.c    |  68 ++---
 drivers/net/wireless/mediatek/mt76/mt792x_regs.h   |  33 +++
 12 files changed, 529 insertions(+), 74 deletions(-)
---
base-commit: 9ac76f3d0bb2940db3a9684d596b9c8f301ef315
change-id: 20260319-mt7927-wifi-support-v2-e89d779b28f4

Best regards,
-- 
Javier Tia <floss@jetm.me>

[PATCH v2 01/13] wifi: mt76: mt7925: fix stale pointer comparisons in change_vif_links

[Javier Tia]

In the error path of mt7925_change_vif_links(), the free: label iterates
over link_ids to clean up, but compares against `mconf` and `mlink`
which hold stale values from the last loop iteration rather than the
current link_id being freed.

Use array-indexed access (mconfs[link_id] / mlinks[link_id]) to compare
against the correct per-link pointers.

Fixes: 69acd6d910b0 ("wifi: mt76: mt7925: add mt7925_change_vif_links")
Tested-by: Marcin FM <marcin@lgic.pl>
Tested-by: Cristian-Florin Radoi <radoi.chris@gmail.com>
Tested-by: George Salukvadze <giosal90@gmail.com>
Tested-by: Evgeny Kapusta <3193631@gmail.com>
Tested-by: Samu Toljamo <samu.toljamo@gmail.com>
Tested-by: Ariel Rosenfeld <ariel.rosenfeld.750@gmail.com>
Tested-by: Chapuis Dario <chapuisdario4@gmail.com>
Tested-by: Thibaut François <tibo@humeurlibre.fr>
Tested-by: 张旭涵 <Loong.0x00@gmail.com>
Signed-off-by: Javier Tia <floss@jetm.me>
---
 drivers/net/wireless/mediatek/mt76/mt7925/main.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/wireless/mediatek/mt76/mt7925/main.c b/drivers/net/wireless/mediatek/mt76/mt7925/main.c
index 2d358a96640c..f128a198f81d 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7925/main.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7925/main.c
@@ -2047,9 +2047,9 @@ mt7925_change_vif_links(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 		rcu_assign_pointer(mvif->link_conf[link_id], NULL);
 		rcu_assign_pointer(mvif->sta.link[link_id], NULL);
 
-		if (mconf != &mvif->bss_conf)
+		if (mconfs[link_id] != &mvif->bss_conf)
 			devm_kfree(dev->mt76.dev, mconfs[link_id]);
-		if (mlink != &mvif->sta.deflink)
+		if (mlinks[link_id] != &mvif->sta.deflink)
 			devm_kfree(dev->mt76.dev, mlinks[link_id]);
 	}
 

-- 
2.53.0

[PATCH v2 02/13] wifi: mt76: mt7925: add 320MHz bandwidth to bss_rlm_tlv

[Javier Tia]

bss_rlm_tlv() in mt7925_mcu_bss_rlm_tlv() has no case for
NL80211_CHAN_WIDTH_320. When associated to a 320MHz BSS, the switch
falls through to default and sends bw=0 (CMD_CBW_20MHZ) to firmware
via BSS_RLM TLV. Firmware then configures the RX radio for 20MHz
and cannot decode the AP's 320MHz frames, resulting in complete data
path failure at 320MHz.

Add the missing NL80211_CHAN_WIDTH_320 case with CMD_CBW_320MHZ and
center_chan2.

Tested on ASUS RT-BE92U: 320MHz throughput goes from 0 Mbps to
841 Mbps (iperf3 -t30 -P8), PHY 4803 Mbps EHT-MCS11.

Reported-by: 张旭涵 <Loong.0x00@gmail.com>
Closes: https://github.com/openwrt/mt76/issues/927
Tested-by: 张旭涵 <Loong.0x00@gmail.com>
Tested-by: Marcin FM <marcin@lgic.pl>
Tested-by: Cristian-Florin Radoi <radoi.chris@gmail.com>
Tested-by: George Salukvadze <giosal90@gmail.com>
Tested-by: Evgeny Kapusta <3193631@gmail.com>
Tested-by: Samu Toljamo <samu.toljamo@gmail.com>
Tested-by: Ariel Rosenfeld <ariel.rosenfeld.750@gmail.com>
Tested-by: Chapuis Dario <chapuisdario4@gmail.com>
Tested-by: Thibaut François <tibo@humeurlibre.fr>
Signed-off-by: Javier Tia <floss@jetm.me>
---
 drivers/net/wireless/mediatek/mt76/mt7925/mcu.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/net/wireless/mediatek/mt76/mt7925/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7925/mcu.c
index cf0fdea45cf7..dd5ecb07947b 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7925/mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7925/mcu.c
@@ -2331,6 +2331,10 @@ void mt7925_mcu_bss_rlm_tlv(struct sk_buff *skb, struct mt76_phy *phy,
 	case NL80211_CHAN_WIDTH_160:
 		req->bw = CMD_CBW_160MHZ;
 		break;
+	case NL80211_CHAN_WIDTH_320:
+		req->bw = CMD_CBW_320MHZ;
+		req->center_chan2 = ieee80211_frequency_to_channel(freq2);
+		break;
 	case NL80211_CHAN_WIDTH_5:
 		req->bw = CMD_CBW_5MHZ;
 		break;

-- 
2.53.0

[PATCH v2 03/13] wifi: mt76: mt7925: handle 320MHz bandwidth in RXV and TXS

[Javier Tia]

The RX vector (RXV) and TX status (TXS) parsing in mac.c lack handling
for 320MHz channel width. When the hardware reports 320MHz in the
bandwidth field, mt7925_mac_fill_rx_rate() returns -EINVAL and
mt7925_mac_add_txs_skb() records no bandwidth stats.

Add IEEE80211_STA_RX_BW_320 cases to both functions. The RXV parser
also handles BW_320+1 since the hardware can report 320MHz in two
adjacent encoding positions.

Tested-by: Marcin FM <marcin@lgic.pl>
Tested-by: Cristian-Florin Radoi <radoi.chris@gmail.com>
Tested-by: George Salukvadze <giosal90@gmail.com>
Tested-by: Evgeny Kapusta <3193631@gmail.com>
Tested-by: Samu Toljamo <samu.toljamo@gmail.com>
Tested-by: Ariel Rosenfeld <ariel.rosenfeld.750@gmail.com>
Tested-by: Chapuis Dario <chapuisdario4@gmail.com>
Tested-by: Thibaut François <tibo@humeurlibre.fr>
Tested-by: 张旭涵 <Loong.0x00@gmail.com>
Signed-off-by: Javier Tia <floss@jetm.me>
---
 drivers/net/wireless/mediatek/mt76/mt7925/mac.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/net/wireless/mediatek/mt76/mt7925/mac.c b/drivers/net/wireless/mediatek/mt76/mt7925/mac.c
index caaf71c31480..ad03fc554b69 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7925/mac.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7925/mac.c
@@ -339,6 +339,11 @@ mt7925_mac_fill_rx_rate(struct mt792x_dev *dev,
 	case IEEE80211_STA_RX_BW_160:
 		status->bw = RATE_INFO_BW_160;
 		break;
+	/* RXV can report 320 in two positions */
+	case IEEE80211_STA_RX_BW_320:
+	case IEEE80211_STA_RX_BW_320 + 1:
+		status->bw = RATE_INFO_BW_320;
+		break;
 	default:
 		return -EINVAL;
 	}
@@ -992,6 +997,10 @@ mt7925_mac_add_txs_skb(struct mt792x_dev *dev, struct mt76_wcid *wcid,
 	stats->tx_mode[mode]++;
 
 	switch (FIELD_GET(MT_TXS0_BW, txs)) {
+	case IEEE80211_STA_RX_BW_320:
+		rate.bw = RATE_INFO_BW_320;
+		stats->tx_bw[4]++;
+		break;
 	case IEEE80211_STA_RX_BW_160:
 		rate.bw = RATE_INFO_BW_160;
 		stats->tx_bw[3]++;

-- 
2.53.0

[PATCH v2 04/13] wifi: mt76: mt7925: populate EHT 320MHz MCS map in sta_rec

[Javier Tia]

The sta_rec_eht structure has a mcs_map_bw320 field, and the channel
width mapping includes NL80211_CHAN_WIDTH_320, but the 320MHz MCS/NSS
map was never copied from the station's EHT capabilities to the MCU TLV.
This prevents negotiation of 320MHz channel width even when both the
hardware and firmware advertise support for it.

Add the missing memcpy for the 320MHz MCS map, matching the existing
pattern for BW20, BW80, and BW160.

Tested-by: Marcin FM <marcin@lgic.pl>
Tested-by: Cristian-Florin Radoi <radoi.chris@gmail.com>
Tested-by: George Salukvadze <giosal90@gmail.com>
Tested-by: Evgeny Kapusta <3193631@gmail.com>
Tested-by: Samu Toljamo <samu.toljamo@gmail.com>
Tested-by: Ariel Rosenfeld <ariel.rosenfeld.750@gmail.com>
Tested-by: Chapuis Dario <chapuisdario4@gmail.com>
Tested-by: Thibaut François <tibo@humeurlibre.fr>
Tested-by: 张旭涵 <Loong.0x00@gmail.com>
Signed-off-by: Javier Tia <floss@jetm.me>
---
 drivers/net/wireless/mediatek/mt76/mt7925/mcu.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/wireless/mediatek/mt76/mt7925/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7925/mcu.c
index dd5ecb07947b..a7f27c5014d5 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7925/mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7925/mcu.c
@@ -1683,6 +1683,7 @@ mt7925_mcu_sta_eht_tlv(struct sk_buff *skb, struct ieee80211_link_sta *link_sta)
 		memcpy(eht->mcs_map_bw20, &mcs_map->only_20mhz, sizeof(eht->mcs_map_bw20));
 	memcpy(eht->mcs_map_bw80, &mcs_map->bw._80, sizeof(eht->mcs_map_bw80));
 	memcpy(eht->mcs_map_bw160, &mcs_map->bw._160, sizeof(eht->mcs_map_bw160));
+	memcpy(eht->mcs_map_bw320, &mcs_map->bw._320, sizeof(eht->mcs_map_bw320));
 }
 
 static void

-- 
2.53.0

[PATCH v2 05/13] wifi: mt76: mt7925: advertise EHT 320MHz capabilities for 6GHz band

[Javier Tia]

mt7925_init_eht_caps() only populates EHT MCS/NSS maps for BW <= 80
and BW = 160, but never sets BW = 320. This means iw phy shows no
320MHz MCS map entries even though the hardware supports 320MHz
operation in the 6GHz band.

Add the missing 320MHz capability bits for 6GHz, following the same
pattern as mt7996:
  - PHY_CAP0: IEEE80211_EHT_PHY_CAP0_320MHZ_IN_6GHZ
  - PHY_CAP1: beamformee SS for 320MHz
  - PHY_CAP2: sounding dimensions for 320MHz
  - PHY_CAP6: MCS15 support for 320MHz width
  - PHY_CAP7: non-OFDMA UL MU-MIMO and MU beamformer for 320MHz
  - MCS/NSS: populate bw._320 maps for 6GHz band

Introduce is_320mhz_supported() as a generic capability check using the
mt7925 family ID. This avoids chip-specific references in common code,
and automatically extends to new chips once they join the
is_mt7925() family via chip ID helpers.

Tested-by: Marcin FM <marcin@lgic.pl>
Tested-by: Cristian-Florin Radoi <radoi.chris@gmail.com>
Tested-by: George Salukvadze <giosal90@gmail.com>
Tested-by: Evgeny Kapusta <3193631@gmail.com>
Tested-by: Samu Toljamo <samu.toljamo@gmail.com>
Tested-by: Ariel Rosenfeld <ariel.rosenfeld.750@gmail.com>
Tested-by: Chapuis Dario <chapuisdario4@gmail.com>
Tested-by: Thibaut François <tibo@humeurlibre.fr>
Tested-by: 张旭涵 <Loong.0x00@gmail.com>
Signed-off-by: Javier Tia <floss@jetm.me>
---
 drivers/net/wireless/mediatek/mt76/mt76_connac.h |  5 +++++
 drivers/net/wireless/mediatek/mt76/mt7925/main.c | 28 +++++++++++++++++++++++-
 2 files changed, 32 insertions(+), 1 deletion(-)

diff --git a/drivers/net/wireless/mediatek/mt76/mt76_connac.h b/drivers/net/wireless/mediatek/mt76/mt76_connac.h
index 813d61bffc2c..554716e01ee6 100644
--- a/drivers/net/wireless/mediatek/mt76/mt76_connac.h
+++ b/drivers/net/wireless/mediatek/mt76/mt76_connac.h
@@ -177,6 +177,11 @@ static inline bool is_mt7925(struct mt76_dev *dev)
 	return mt76_chip(dev) == 0x7925;
 }
 
+static inline bool is_320mhz_supported(struct mt76_dev *dev)
+{
+	return is_mt7925(dev);
+}
+
 static inline bool is_mt7920(struct mt76_dev *dev)
 {
 	return mt76_chip(dev) == 0x7920;
diff --git a/drivers/net/wireless/mediatek/mt76/mt7925/main.c b/drivers/net/wireless/mediatek/mt76/mt7925/main.c
index f128a198f81d..cd043ac266fb 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7925/main.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7925/main.c
@@ -183,6 +183,10 @@ mt7925_init_eht_caps(struct mt792x_phy *phy, enum nl80211_band band,
 		IEEE80211_EHT_PHY_CAP0_SU_BEAMFORMER |
 		IEEE80211_EHT_PHY_CAP0_SU_BEAMFORMEE;
 
+	if (band == NL80211_BAND_6GHZ && is_320mhz_supported(&phy->dev->mt76))
+		eht_cap_elem->phy_cap_info[0] |=
+			IEEE80211_EHT_PHY_CAP0_320MHZ_IN_6GHZ;
+
 	eht_cap_elem->phy_cap_info[0] |=
 		u8_encode_bits(u8_get_bits(sts - 1, BIT(0)),
 			       IEEE80211_EHT_PHY_CAP0_BEAMFORMEE_SS_80MHZ_MASK);
@@ -193,10 +197,20 @@ mt7925_init_eht_caps(struct mt792x_phy *phy, enum nl80211_band band,
 		u8_encode_bits(sts - 1,
 			       IEEE80211_EHT_PHY_CAP1_BEAMFORMEE_SS_160MHZ_MASK);
 
+	if (band == NL80211_BAND_6GHZ && is_320mhz_supported(&phy->dev->mt76))
+		eht_cap_elem->phy_cap_info[1] |=
+			u8_encode_bits(sts - 1,
+				       IEEE80211_EHT_PHY_CAP1_BEAMFORMEE_SS_320MHZ_MASK);
+
 	eht_cap_elem->phy_cap_info[2] =
 		u8_encode_bits(sts - 1, IEEE80211_EHT_PHY_CAP2_SOUNDING_DIM_80MHZ_MASK) |
 		u8_encode_bits(sts - 1, IEEE80211_EHT_PHY_CAP2_SOUNDING_DIM_160MHZ_MASK);
 
+	if (band == NL80211_BAND_6GHZ && is_320mhz_supported(&phy->dev->mt76))
+		eht_cap_elem->phy_cap_info[2] |=
+			u8_encode_bits(sts - 1,
+				       IEEE80211_EHT_PHY_CAP2_SOUNDING_DIM_320MHZ_MASK);
+
 	eht_cap_elem->phy_cap_info[3] =
 		IEEE80211_EHT_PHY_CAP3_NG_16_SU_FEEDBACK |
 		IEEE80211_EHT_PHY_CAP3_NG_16_MU_FEEDBACK |
@@ -217,7 +231,8 @@ mt7925_init_eht_caps(struct mt792x_phy *phy, enum nl80211_band band,
 		u8_encode_bits(u8_get_bits(0x11, GENMASK(1, 0)),
 			       IEEE80211_EHT_PHY_CAP5_MAX_NUM_SUPP_EHT_LTF_MASK);
 
-	val = width == NL80211_CHAN_WIDTH_160 ? 0x7 :
+	val = width == NL80211_CHAN_WIDTH_320 ? 0xf :
+	      width == NL80211_CHAN_WIDTH_160 ? 0x7 :
 	      width == NL80211_CHAN_WIDTH_80 ? 0x3 : 0x1;
 	eht_cap_elem->phy_cap_info[6] =
 		u8_encode_bits(u8_get_bits(0x11, GENMASK(4, 2)),
@@ -230,6 +245,11 @@ mt7925_init_eht_caps(struct mt792x_phy *phy, enum nl80211_band band,
 		IEEE80211_EHT_PHY_CAP7_MU_BEAMFORMER_80MHZ |
 		IEEE80211_EHT_PHY_CAP7_MU_BEAMFORMER_160MHZ;
 
+	if (band == NL80211_BAND_6GHZ && is_320mhz_supported(&phy->dev->mt76))
+		eht_cap_elem->phy_cap_info[7] |=
+			IEEE80211_EHT_PHY_CAP7_NON_OFDMA_UL_MU_MIMO_320MHZ |
+			IEEE80211_EHT_PHY_CAP7_MU_BEAMFORMER_320MHZ;
+
 	val = u8_encode_bits(nss, IEEE80211_EHT_MCS_NSS_RX) |
 	      u8_encode_bits(nss, IEEE80211_EHT_MCS_NSS_TX);
 
@@ -239,6 +259,12 @@ mt7925_init_eht_caps(struct mt792x_phy *phy, enum nl80211_band band,
 	eht_nss->bw._160.rx_tx_mcs9_max_nss = val;
 	eht_nss->bw._160.rx_tx_mcs11_max_nss = val;
 	eht_nss->bw._160.rx_tx_mcs13_max_nss = val;
+
+	if (band == NL80211_BAND_6GHZ && is_320mhz_supported(&phy->dev->mt76)) {
+		eht_nss->bw._320.rx_tx_mcs9_max_nss = val;
+		eht_nss->bw._320.rx_tx_mcs11_max_nss = val;
+		eht_nss->bw._320.rx_tx_mcs13_max_nss = val;
+	}
 }
 
 int mt7925_init_mlo_caps(struct mt792x_phy *phy)

-- 
2.53.0

Re: [PATCH v2 05/13] wifi: mt76: mt7925: advertise EHT 320MHz capabilities for 6GHz band

[Sean Wang]

Hi,

On Thu, Mar 19, 2026 at 5:26 PM Javier Tia <floss@jetm.me> wrote:
>
> mt7925_init_eht_caps() only populates EHT MCS/NSS maps for BW <= 80
> and BW = 160, but never sets BW = 320. This means iw phy shows no
> 320MHz MCS map entries even though the hardware supports 320MHz
> operation in the 6GHz band.
>
> Add the missing 320MHz capability bits for 6GHz, following the same
> pattern as mt7996:
>   - PHY_CAP0: IEEE80211_EHT_PHY_CAP0_320MHZ_IN_6GHZ
>   - PHY_CAP1: beamformee SS for 320MHz
>   - PHY_CAP2: sounding dimensions for 320MHz
>   - PHY_CAP6: MCS15 support for 320MHz width
>   - PHY_CAP7: non-OFDMA UL MU-MIMO and MU beamformer for 320MHz
>   - MCS/NSS: populate bw._320 maps for 6GHz band
>
> Introduce is_320mhz_supported() as a generic capability check using the
> mt7925 family ID. This avoids chip-specific references in common code,
> and automatically extends to new chips once they join the
> is_mt7925() family via chip ID helpers.
>
> Tested-by: Marcin FM <marcin@lgic.pl>
> Tested-by: Cristian-Florin Radoi <radoi.chris@gmail.com>
> Tested-by: George Salukvadze <giosal90@gmail.com>
> Tested-by: Evgeny Kapusta <3193631@gmail.com>
> Tested-by: Samu Toljamo <samu.toljamo@gmail.com>
> Tested-by: Ariel Rosenfeld <ariel.rosenfeld.750@gmail.com>
> Tested-by: Chapuis Dario <chapuisdario4@gmail.com>
> Tested-by: Thibaut François <tibo@humeurlibre.fr>
> Tested-by: 张旭涵 <Loong.0x00@gmail.com>
> Signed-off-by: Javier Tia <floss@jetm.me>
> ---
>  drivers/net/wireless/mediatek/mt76/mt76_connac.h |  5 +++++
>  drivers/net/wireless/mediatek/mt76/mt7925/main.c | 28 +++++++++++++++++++++++-
>  2 files changed, 32 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/net/wireless/mediatek/mt76/mt76_connac.h b/drivers/net/wireless/mediatek/mt76/mt76_connac.h
> index 813d61bffc2c..554716e01ee6 100644
> --- a/drivers/net/wireless/mediatek/mt76/mt76_connac.h
> +++ b/drivers/net/wireless/mediatek/mt76/mt76_connac.h
> @@ -177,6 +177,11 @@ static inline bool is_mt7925(struct mt76_dev *dev)
>         return mt76_chip(dev) == 0x7925;
>  }
>
> +static inline bool is_320mhz_supported(struct mt76_dev *dev)
> +{
> +       return is_mt7925(dev);

I don't think this is correct for mt7925, and it will cause a
regression there. Was this tested on actual mt7925 hardware?

> +}
> +
>  static inline bool is_mt7920(struct mt76_dev *dev)
>  {
>         return mt76_chip(dev) == 0x7920;
> diff --git a/drivers/net/wireless/mediatek/mt76/mt7925/main.c b/drivers/net/wireless/mediatek/mt76/mt7925/main.c
> index f128a198f81d..cd043ac266fb 100644
> --- a/drivers/net/wireless/mediatek/mt76/mt7925/main.c
> +++ b/drivers/net/wireless/mediatek/mt76/mt7925/main.c
> @@ -183,6 +183,10 @@ mt7925_init_eht_caps(struct mt792x_phy *phy, enum nl80211_band band,
>                 IEEE80211_EHT_PHY_CAP0_SU_BEAMFORMER |
>                 IEEE80211_EHT_PHY_CAP0_SU_BEAMFORMEE;
>
> +       if (band == NL80211_BAND_6GHZ && is_320mhz_supported(&phy->dev->mt76))
> +               eht_cap_elem->phy_cap_info[0] |=
> +                       IEEE80211_EHT_PHY_CAP0_320MHZ_IN_6GHZ;
> +
>         eht_cap_elem->phy_cap_info[0] |=
>                 u8_encode_bits(u8_get_bits(sts - 1, BIT(0)),
>                                IEEE80211_EHT_PHY_CAP0_BEAMFORMEE_SS_80MHZ_MASK);
> @@ -193,10 +197,20 @@ mt7925_init_eht_caps(struct mt792x_phy *phy, enum nl80211_band band,
>                 u8_encode_bits(sts - 1,
>                                IEEE80211_EHT_PHY_CAP1_BEAMFORMEE_SS_160MHZ_MASK);
>
> +       if (band == NL80211_BAND_6GHZ && is_320mhz_supported(&phy->dev->mt76))
> +               eht_cap_elem->phy_cap_info[1] |=
> +                       u8_encode_bits(sts - 1,
> +                                      IEEE80211_EHT_PHY_CAP1_BEAMFORMEE_SS_320MHZ_MASK);
> +
>         eht_cap_elem->phy_cap_info[2] =
>                 u8_encode_bits(sts - 1, IEEE80211_EHT_PHY_CAP2_SOUNDING_DIM_80MHZ_MASK) |
>                 u8_encode_bits(sts - 1, IEEE80211_EHT_PHY_CAP2_SOUNDING_DIM_160MHZ_MASK);
>
> +       if (band == NL80211_BAND_6GHZ && is_320mhz_supported(&phy->dev->mt76))
> +               eht_cap_elem->phy_cap_info[2] |=
> +                       u8_encode_bits(sts - 1,
> +                                      IEEE80211_EHT_PHY_CAP2_SOUNDING_DIM_320MHZ_MASK);
> +
>         eht_cap_elem->phy_cap_info[3] =
>                 IEEE80211_EHT_PHY_CAP3_NG_16_SU_FEEDBACK |
>                 IEEE80211_EHT_PHY_CAP3_NG_16_MU_FEEDBACK |
> @@ -217,7 +231,8 @@ mt7925_init_eht_caps(struct mt792x_phy *phy, enum nl80211_band band,
>                 u8_encode_bits(u8_get_bits(0x11, GENMASK(1, 0)),
>                                IEEE80211_EHT_PHY_CAP5_MAX_NUM_SUPP_EHT_LTF_MASK);
>
> -       val = width == NL80211_CHAN_WIDTH_160 ? 0x7 :
> +       val = width == NL80211_CHAN_WIDTH_320 ? 0xf :
> +             width == NL80211_CHAN_WIDTH_160 ? 0x7 :
>               width == NL80211_CHAN_WIDTH_80 ? 0x3 : 0x1;
>         eht_cap_elem->phy_cap_info[6] =
>                 u8_encode_bits(u8_get_bits(0x11, GENMASK(4, 2)),
> @@ -230,6 +245,11 @@ mt7925_init_eht_caps(struct mt792x_phy *phy, enum nl80211_band band,
>                 IEEE80211_EHT_PHY_CAP7_MU_BEAMFORMER_80MHZ |
>                 IEEE80211_EHT_PHY_CAP7_MU_BEAMFORMER_160MHZ;
>
> +       if (band == NL80211_BAND_6GHZ && is_320mhz_supported(&phy->dev->mt76))
> +               eht_cap_elem->phy_cap_info[7] |=
> +                       IEEE80211_EHT_PHY_CAP7_NON_OFDMA_UL_MU_MIMO_320MHZ |
> +                       IEEE80211_EHT_PHY_CAP7_MU_BEAMFORMER_320MHZ;
> +

I don't think this should be copied from mt7996 as-is for mt7927. I'd
suggest dropping the eht_cap_elem->phy_cap_info[7] change and keeping
it conservative for now.

>         val = u8_encode_bits(nss, IEEE80211_EHT_MCS_NSS_RX) |
>               u8_encode_bits(nss, IEEE80211_EHT_MCS_NSS_TX);
>
> @@ -239,6 +259,12 @@ mt7925_init_eht_caps(struct mt792x_phy *phy, enum nl80211_band band,
>         eht_nss->bw._160.rx_tx_mcs9_max_nss = val;
>         eht_nss->bw._160.rx_tx_mcs11_max_nss = val;
>         eht_nss->bw._160.rx_tx_mcs13_max_nss = val;
> +
> +       if (band == NL80211_BAND_6GHZ && is_320mhz_supported(&phy->dev->mt76)) {
> +               eht_nss->bw._320.rx_tx_mcs9_max_nss = val;
> +               eht_nss->bw._320.rx_tx_mcs11_max_nss = val;
> +               eht_nss->bw._320.rx_tx_mcs13_max_nss = val;
> +       }
>  }
>
>  int mt7925_init_mlo_caps(struct mt792x_phy *phy)
>
> --
> 2.53.0
>
>

[PATCH v2 06/13] wifi: mt76: mt7925: add MT7927 chip ID helpers

[Javier Tia]

The MediaTek MT7927 (Filogic 380) combo chip uses MT7927 WiFi silicon
that is architecturally compatible with MT7925. Extend is_mt7925() to
match chip ID 0x7927, and add is_mt7927() for code paths that need
MT7927-specific handling.

Also add 0x7927 to is_mt76_fw_txp() to match MT7925's TXP format.

Tested-by: Marcin FM <marcin@lgic.pl>
Tested-by: Cristian-Florin Radoi <radoi.chris@gmail.com>
Tested-by: George Salukvadze <giosal90@gmail.com>
Tested-by: Evgeny Kapusta <3193631@gmail.com>
Tested-by: Samu Toljamo <samu.toljamo@gmail.com>
Tested-by: Ariel Rosenfeld <ariel.rosenfeld.750@gmail.com>
Tested-by: Chapuis Dario <chapuisdario4@gmail.com>
Tested-by: Thibaut François <tibo@humeurlibre.fr>
Tested-by: 张旭涵 <Loong.0x00@gmail.com>
Signed-off-by: Javier Tia <floss@jetm.me>
---
 drivers/net/wireless/mediatek/mt76/mt76_connac.h | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/net/wireless/mediatek/mt76/mt76_connac.h b/drivers/net/wireless/mediatek/mt76/mt76_connac.h
index 554716e01ee6..bf578bf467d5 100644
--- a/drivers/net/wireless/mediatek/mt76/mt76_connac.h
+++ b/drivers/net/wireless/mediatek/mt76/mt76_connac.h
@@ -174,7 +174,12 @@ extern const struct wiphy_wowlan_support mt76_connac_wowlan_support;
 
 static inline bool is_mt7925(struct mt76_dev *dev)
 {
-	return mt76_chip(dev) == 0x7925;
+	return mt76_chip(dev) == 0x7925 || mt76_chip(dev) == 0x7927;
+}
+
+static inline bool is_mt7927(struct mt76_dev *dev)
+{
+	return mt76_chip(dev) == 0x7927;
 }
 
 static inline bool is_320mhz_supported(struct mt76_dev *dev)
@@ -277,6 +282,7 @@ static inline bool is_mt76_fw_txp(struct mt76_dev *dev)
 	case 0x7920:
 	case 0x7922:
 	case 0x7925:
+	case 0x7927:
 	case 0x7663:
 	case 0x7622:
 		return false;

-- 
2.53.0

[PATCH v2 07/13] wifi: mt76: mt7925: add MT7927 firmware paths

[Javier Tia]

Add firmware path definitions for MT7927 WiFi firmware (WIFI_RAM_CODE
and PATCH_MCU) and the corresponding MODULE_FIRMWARE declarations. Add
MT7927 cases to mt792x_ram_name() and mt792x_patch_name() so the driver
loads the correct firmware for the 0x7927 chip ID.

PCI device table entries are deferred to a later patch to allow
infrastructure setup before device enablement.

Tested-by: Marcin FM <marcin@lgic.pl>
Tested-by: Cristian-Florin Radoi <radoi.chris@gmail.com>
Tested-by: George Salukvadze <giosal90@gmail.com>
Tested-by: Evgeny Kapusta <3193631@gmail.com>
Tested-by: Samu Toljamo <samu.toljamo@gmail.com>
Tested-by: Ariel Rosenfeld <ariel.rosenfeld.750@gmail.com>
Tested-by: Chapuis Dario <chapuisdario4@gmail.com>
Tested-by: Thibaut François <tibo@humeurlibre.fr>
Tested-by: 张旭涵 <Loong.0x00@gmail.com>
Signed-off-by: Javier Tia <floss@jetm.me>
---
 drivers/net/wireless/mediatek/mt76/mt7925/pci.c | 2 ++
 drivers/net/wireless/mediatek/mt76/mt792x.h     | 6 ++++++
 2 files changed, 8 insertions(+)

diff --git a/drivers/net/wireless/mediatek/mt76/mt7925/pci.c b/drivers/net/wireless/mediatek/mt76/mt7925/pci.c
index c4161754c01d..f820d5aeb723 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7925/pci.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7925/pci.c
@@ -633,6 +633,8 @@ module_pci_driver(mt7925_pci_driver);
 MODULE_DEVICE_TABLE(pci, mt7925_pci_device_table);
 MODULE_FIRMWARE(MT7925_FIRMWARE_WM);
 MODULE_FIRMWARE(MT7925_ROM_PATCH);
+MODULE_FIRMWARE(MT7927_FIRMWARE_WM);
+MODULE_FIRMWARE(MT7927_ROM_PATCH);
 MODULE_AUTHOR("Deren Wu <deren.wu@mediatek.com>");
 MODULE_AUTHOR("Lorenzo Bianconi <lorenzo@kernel.org>");
 MODULE_DESCRIPTION("MediaTek MT7925E (PCIe) wireless driver");
diff --git a/drivers/net/wireless/mediatek/mt76/mt792x.h b/drivers/net/wireless/mediatek/mt76/mt792x.h
index 8388638ed550..38790ef83e51 100644
--- a/drivers/net/wireless/mediatek/mt76/mt792x.h
+++ b/drivers/net/wireless/mediatek/mt76/mt792x.h
@@ -45,11 +45,13 @@
 #define MT7921_FIRMWARE_WM	"mediatek/WIFI_RAM_CODE_MT7961_1.bin"
 #define MT7922_FIRMWARE_WM	"mediatek/WIFI_RAM_CODE_MT7922_1.bin"
 #define MT7925_FIRMWARE_WM	"mediatek/mt7925/WIFI_RAM_CODE_MT7925_1_1.bin"
+#define MT7927_FIRMWARE_WM	"mediatek/mt7927/WIFI_RAM_CODE_MT6639_2_1.bin"
 
 #define MT7920_ROM_PATCH	"mediatek/WIFI_MT7961_patch_mcu_1a_2_hdr.bin"
 #define MT7921_ROM_PATCH	"mediatek/WIFI_MT7961_patch_mcu_1_2_hdr.bin"
 #define MT7922_ROM_PATCH	"mediatek/WIFI_MT7922_patch_mcu_1_1_hdr.bin"
 #define MT7925_ROM_PATCH	"mediatek/mt7925/WIFI_MT7925_PATCH_MCU_1_1_hdr.bin"
+#define MT7927_ROM_PATCH	"mediatek/mt7927/WIFI_MT6639_PATCH_MCU_2_1_hdr.bin"
 
 #define MT792x_SDIO_HDR_TX_BYTES	GENMASK(15, 0)
 #define MT792x_SDIO_HDR_PKT_TYPE	GENMASK(17, 16)
@@ -454,6 +456,8 @@ static inline char *mt792x_ram_name(struct mt792x_dev *dev)
 		return MT7922_FIRMWARE_WM;
 	case 0x7925:
 		return MT7925_FIRMWARE_WM;
+	case 0x7927:
+		return MT7927_FIRMWARE_WM;
 	default:
 		return MT7921_FIRMWARE_WM;
 	}
@@ -468,6 +472,8 @@ static inline char *mt792x_patch_name(struct mt792x_dev *dev)
 		return MT7922_ROM_PATCH;
 	case 0x7925:
 		return MT7925_ROM_PATCH;
+	case 0x7927:
+		return MT7927_ROM_PATCH;
 	default:
 		return MT7921_ROM_PATCH;
 	}

-- 
2.53.0

[PATCH v2 08/13] wifi: mt76: mt7925: use irq_map for chip-specific interrupt handling

[Javier Tia]

The mac_reset and resume paths use the hardcoded MT_INT_RX_DONE_ALL
constant (bits 0-2) to re-enable RX interrupts. This is correct for
MT7925 (RX rings 0, 1, 2) but wrong for chips using different ring
indices.

Define a per-chip irq_map with the correct RX interrupt enable bits and
replace hardcoded MT_INT_RX_DONE_ALL with irq_map field reads in the
resume and mac_reset paths. Add the MT7927 irq_map with interrupt bits
matching its RX ring layout (rings 4, 6, 7), selected at probe time
based on PCI device ID.

This ensures the correct interrupt bits are enabled regardless of the
chip variant.

Tested-by: Marcin FM <marcin@lgic.pl>
Tested-by: Cristian-Florin Radoi <radoi.chris@gmail.com>
Tested-by: George Salukvadze <giosal90@gmail.com>
Tested-by: Evgeny Kapusta <3193631@gmail.com>
Tested-by: Samu Toljamo <samu.toljamo@gmail.com>
Tested-by: Ariel Rosenfeld <ariel.rosenfeld.750@gmail.com>
Tested-by: Chapuis Dario <chapuisdario4@gmail.com>
Tested-by: Thibaut François <tibo@humeurlibre.fr>
Tested-by: 张旭涵 <Loong.0x00@gmail.com>
Signed-off-by: Javier Tia <floss@jetm.me>
---
 drivers/net/wireless/mediatek/mt76/mt7925/pci.c     | 21 +++++++++++++++++++--
 drivers/net/wireless/mediatek/mt76/mt7925/pci_mac.c |  5 ++++-
 drivers/net/wireless/mediatek/mt76/mt792x_regs.h    |  3 +++
 3 files changed, 26 insertions(+), 3 deletions(-)

diff --git a/drivers/net/wireless/mediatek/mt76/mt7925/pci.c b/drivers/net/wireless/mediatek/mt76/mt7925/pci.c
index f820d5aeb723..604c0e9ae7ba 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7925/pci.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7925/pci.c
@@ -266,6 +266,18 @@ static int mt7925_dma_init(struct mt792x_dev *dev)
 	return mt792x_dma_enable(dev);
 }
 
+static const struct mt792x_irq_map mt7927_irq_map = {
+	.host_irq_enable = MT_WFDMA0_HOST_INT_ENA,
+	.tx = {
+		.all_complete_mask = MT_INT_TX_DONE_ALL,
+		.mcu_complete_mask = MT_INT_TX_DONE_MCU,
+	},
+	.rx = {
+		.data_complete_mask = MT7927_RX_DONE_INT_ENA4,
+		.wm_complete_mask = MT7927_RX_DONE_INT_ENA6,
+		.wm2_complete_mask = MT7927_RX_DONE_INT_ENA7,
+	},
+};
 static int mt7925_pci_probe(struct pci_dev *pdev,
 			    const struct pci_device_id *id)
 {
@@ -310,6 +322,7 @@ static int mt7925_pci_probe(struct pci_dev *pdev,
 	struct mt76_bus_ops *bus_ops;
 	struct mt792x_dev *dev;
 	struct mt76_dev *mdev;
+	bool is_mt7927_hw;
 	u8 features;
 	int ret;
 	u16 cmd;
@@ -358,7 +371,8 @@ static int mt7925_pci_probe(struct pci_dev *pdev,
 	dev = container_of(mdev, struct mt792x_dev, mt76);
 	dev->fw_features = features;
 	dev->hif_ops = &mt7925_pcie_ops;
-	dev->irq_map = &irq_map;
+	is_mt7927_hw = (pdev->device == 0x6639 || pdev->device == 0x7927);
+	dev->irq_map = is_mt7927_hw ? &mt7927_irq_map : &irq_map;
 	mt76_mmio_init(&dev->mt76, pcim_iomap_table(pdev)[0]);
 	tasklet_init(&mdev->irq_tasklet, mt792x_irq_tasklet, (unsigned long)dev);
 
@@ -549,7 +563,10 @@ static int _mt7925_pci_resume(struct device *device, bool restore)
 	mt76_wr(dev, MT_PCIE_MAC_INT_ENABLE, 0xff);
 	mt76_connac_irq_enable(&dev->mt76,
 			       dev->irq_map->tx.all_complete_mask |
-			       MT_INT_RX_DONE_ALL | MT_INT_MCU_CMD);
+			       dev->irq_map->rx.data_complete_mask |
+			       dev->irq_map->rx.wm_complete_mask |
+			       dev->irq_map->rx.wm2_complete_mask |
+			       MT_INT_MCU_CMD);
 	mt76_set(dev, MT_MCU2HOST_SW_INT_ENA, MT_MCU_CMD_WAKE_RX_PCIE);
 
 	/* put dma enabled */
diff --git a/drivers/net/wireless/mediatek/mt76/mt7925/pci_mac.c b/drivers/net/wireless/mediatek/mt76/mt7925/pci_mac.c
index 3072850c2752..1626a3684082 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7925/pci_mac.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7925/pci_mac.c
@@ -118,7 +118,10 @@ int mt7925e_mac_reset(struct mt792x_dev *dev)
 
 	mt76_wr(dev, dev->irq_map->host_irq_enable,
 		dev->irq_map->tx.all_complete_mask |
-		MT_INT_RX_DONE_ALL | MT_INT_MCU_CMD);
+		dev->irq_map->rx.data_complete_mask |
+		dev->irq_map->rx.wm_complete_mask |
+		dev->irq_map->rx.wm2_complete_mask |
+		MT_INT_MCU_CMD);
 	mt76_wr(dev, MT_PCIE_MAC_INT_ENABLE, 0xff);
 
 	err = mt792xe_mcu_fw_pmctrl(dev);
diff --git a/drivers/net/wireless/mediatek/mt76/mt792x_regs.h b/drivers/net/wireless/mediatek/mt76/mt792x_regs.h
index acf627aed609..a8c8d7d6f565 100644
--- a/drivers/net/wireless/mediatek/mt76/mt792x_regs.h
+++ b/drivers/net/wireless/mediatek/mt76/mt792x_regs.h
@@ -308,6 +308,9 @@
 #define HOST_RX_DONE_INT_ENA1		BIT(1)
 #define HOST_RX_DONE_INT_ENA2		BIT(2)
 #define HOST_RX_DONE_INT_ENA3		BIT(3)
+#define MT7927_RX_DONE_INT_ENA4		BIT(12)
+#define MT7927_RX_DONE_INT_ENA6		BIT(14)
+#define MT7927_RX_DONE_INT_ENA7		BIT(15)
 #define HOST_TX_DONE_INT_ENA0		BIT(4)
 #define HOST_TX_DONE_INT_ENA1		BIT(5)
 #define HOST_TX_DONE_INT_ENA2		BIT(6)

-- 
2.53.0

[PATCH v2 09/13] wifi: mt76: mt7925: add chip-specific DMA configuration

[Javier Tia]

MT7927 uses different DMA ring indices (RX rings 4, 6, 7 vs MT7925's
0, 1, 2), a different prefetch register layout, and requires additional
GLO_CFG bits (ADDR_EXT_EN, FW_DWLD_BYPASS_DMASHDL) that must be
restored after every PM wake cycle.

Introduce struct mt792x_dma_config to parameterize per-chip DMA
differences:
  - RX ring indices for MCU events, data, and auxiliary queues
  - Prefetch configuration callback
  - GLO_CFG quirk bits (set/clear masks applied after DMA enable)
  - Pre-ring-setup hook for MT7927's SET_OWN/CLR_OWN sequence

Refactor mt7925_dma_init() to read ring indices from the config struct,
eliminating the need for a standalone mt7927_dma_init(). The single
init function handles both chips by dispatching through the config.

Update mt792x_dma_enable() to apply chip-specific GLO_CFG bits from the
config and select the correct GLO_CFG_EXT1 register address per chip.

Ring layout and prefetch values derived from Loong0x00's
reverse-engineered MT7927 driver.

Tested-by: Marcin FM <marcin@lgic.pl>
Tested-by: Cristian-Florin Radoi <radoi.chris@gmail.com>
Tested-by: George Salukvadze <giosal90@gmail.com>
Tested-by: Evgeny Kapusta <3193631@gmail.com>
Tested-by: Samu Toljamo <samu.toljamo@gmail.com>
Tested-by: Ariel Rosenfeld <ariel.rosenfeld.750@gmail.com>
Tested-by: Chapuis Dario <chapuisdario4@gmail.com>
Tested-by: Thibaut François <tibo@humeurlibre.fr>
Tested-by: 张旭涵 <Loong.0x00@gmail.com>
Signed-off-by: Javier Tia <floss@jetm.me>
---
 drivers/net/wireless/mediatek/mt76/mt7925/pci.c  | 137 +++++++++++++++++++++--
 drivers/net/wireless/mediatek/mt76/mt792x.h      |  21 ++++
 drivers/net/wireless/mediatek/mt76/mt792x_dma.c  |  68 +++++------
 drivers/net/wireless/mediatek/mt76/mt792x_regs.h |  12 ++
 4 files changed, 198 insertions(+), 40 deletions(-)

diff --git a/drivers/net/wireless/mediatek/mt76/mt7925/pci.c b/drivers/net/wireless/mediatek/mt76/mt7925/pci.c
index 604c0e9ae7ba..415194a440f8 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7925/pci.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7925/pci.c
@@ -210,17 +210,128 @@ static u32 mt7925_rmw(struct mt76_dev *mdev, u32 offset, u32 mask, u32 val)
 	return dev->bus_ops->rmw(mdev, addr, mask, val);
 }
 
+/* MT7927 uses different RX ring indices than MT7925 */
+enum mt7927_rxq_id {
+	MT7927_RXQ_BAND0 = 4,
+	MT7927_RXQ_MCU_WM = 6,
+	MT7927_RXQ_DATA2 = 7,
+};
+
+#define PREFETCH(base, depth)	((base) << 16 | (depth))
+
+static void mt7925_dma_prefetch(struct mt792x_dev *dev)
+{
+	/* rx ring */
+	mt76_wr(dev, MT_WFDMA0_RX_RING0_EXT_CTRL, PREFETCH(0x0000, 0x4));
+	mt76_wr(dev, MT_WFDMA0_RX_RING1_EXT_CTRL, PREFETCH(0x0040, 0x4));
+	mt76_wr(dev, MT_WFDMA0_RX_RING2_EXT_CTRL, PREFETCH(0x0080, 0x4));
+	mt76_wr(dev, MT_WFDMA0_RX_RING3_EXT_CTRL, PREFETCH(0x00c0, 0x4));
+	/* tx ring */
+	mt76_wr(dev, MT_WFDMA0_TX_RING0_EXT_CTRL, PREFETCH(0x0100, 0x10));
+	mt76_wr(dev, MT_WFDMA0_TX_RING1_EXT_CTRL, PREFETCH(0x0200, 0x10));
+	mt76_wr(dev, MT_WFDMA0_TX_RING2_EXT_CTRL, PREFETCH(0x0300, 0x10));
+	mt76_wr(dev, MT_WFDMA0_TX_RING3_EXT_CTRL, PREFETCH(0x0400, 0x10));
+	mt76_wr(dev, MT_WFDMA0_TX_RING15_EXT_CTRL, PREFETCH(0x0500, 0x4));
+	mt76_wr(dev, MT_WFDMA0_TX_RING16_EXT_CTRL, PREFETCH(0x0540, 0x4));
+}
+
+static void mt7927_dma_prefetch(struct mt792x_dev *dev)
+{
+	/* Trigger prefetch controller reset before reprogramming */
+	mt76_wr(dev, MT_WFDMA_PREFETCH_CTRL,
+		mt76_rr(dev, MT_WFDMA_PREFETCH_CTRL));
+	/* MT7927 uses packed prefetch registers */
+	mt76_wr(dev, MT_WFDMA_PREFETCH_CFG0, 0x660077);
+	mt76_wr(dev, MT_WFDMA_PREFETCH_CFG1, 0x1100);
+	mt76_wr(dev, MT_WFDMA_PREFETCH_CFG2, 0x30004f);
+	mt76_wr(dev, MT_WFDMA_PREFETCH_CFG3, 0x542200);
+	/* per-ring EXT_CTRL */
+	mt76_wr(dev, MT_WFDMA0_RX_RING4_EXT_CTRL, PREFETCH(0x0000, 0x8));
+	mt76_wr(dev, MT_WFDMA0_RX_RING6_EXT_CTRL, PREFETCH(0x0080, 0x8));
+	mt76_wr(dev, MT_WFDMA0_RX_RING7_EXT_CTRL, PREFETCH(0x0100, 0x4));
+	mt76_wr(dev, MT_WFDMA0_TX_RING16_EXT_CTRL, PREFETCH(0x0140, 0x4));
+	mt76_wr(dev, MT_WFDMA0_TX_RING15_EXT_CTRL, PREFETCH(0x0180, 0x10));
+	mt76_wr(dev, MT_WFDMA0_TX_RING0_EXT_CTRL, PREFETCH(0x0280, 0x4));
+}
+
+static int mt7927_pre_ring_setup(struct mt792x_dev *dev)
+{
+	int ret;
+
+	/* SET_OWN -> CLR_OWN: triggers ROM to initialize WFDMA */
+	ret = mt792xe_mcu_fw_pmctrl(dev);
+	if (ret)
+		return ret;
+
+	ret = __mt792xe_mcu_drv_pmctrl(dev);
+	if (ret)
+		return ret;
+
+	/* Clear pending interrupts from previous state */
+	mt76_wr(dev, MT_WFDMA0_HOST_INT_STA, ~0);
+
+	return 0;
+}
+
+static const struct mt792x_dma_config mt7925_dma_cfg = {
+	.rxq_band0 = MT7925_RXQ_BAND0,		/* 2 */
+	.rxq_mcu_wm = MT7925_RXQ_MCU_WM,	/* 0 */
+	.dma_prefetch = mt7925_dma_prefetch,
+	.glo_cfg_ext1 = MT_UWFDMA0_GLO_CFG_EXT1,
+};
+
+static const struct mt792x_dma_config mt7927_dma_cfg = {
+	.rxq_band0 = MT7927_RXQ_BAND0,		/* 4 */
+	.rxq_mcu_wm = MT7927_RXQ_MCU_WM,	/* 6 */
+	.rxq_data2 = MT7927_RXQ_DATA2,		/* 7 */
+	.dma_prefetch = mt7927_dma_prefetch,
+	.glo_cfg_set = MT_WFDMA0_GLO_CFG_ADDR_EXT_EN |
+		       MT_WFDMA0_GLO_CFG_FW_DWLD_BYPASS_DMASHDL,
+	.glo_cfg_clear = MT_WFDMA0_GLO_CFG_CSR_LBK_RX_Q_SEL_EN,
+	.glo_cfg_ext1 = MT_WFDMA0_GLO_CFG_EXT1,
+	.pre_ring_setup = mt7927_pre_ring_setup,
+};
+
 static int mt7925_dma_init(struct mt792x_dev *dev)
 {
+	const struct mt792x_dma_config *cfg = dev->dma_config;
 	int ret;
 
 	mt76_dma_attach(&dev->mt76);
 
-	ret = mt792x_dma_disable(dev, true);
-	if (ret)
-		return ret;
+	if (cfg->pre_ring_setup) {
+		ret = cfg->pre_ring_setup(dev);
+		if (ret)
+			return ret;
 
-	/* init tx queue */
+		/* Disable DMA before ring allocation */
+		mt76_clear(dev, MT_WFDMA0_GLO_CFG,
+			   MT_WFDMA0_GLO_CFG_TX_DMA_EN |
+			   MT_WFDMA0_GLO_CFG_RX_DMA_EN |
+			   MT_WFDMA0_GLO_CFG_CSR_DISP_BASE_PTR_CHAIN_EN |
+			   MT_WFDMA0_GLO_CFG_OMIT_TX_INFO |
+			   MT_WFDMA0_GLO_CFG_OMIT_RX_INFO_PFET2);
+		/* Ensure all DMA writes complete before polling status. */
+		wmb();
+
+		if (!mt76_poll_msec_tick(dev, MT_WFDMA0_GLO_CFG,
+					MT_WFDMA0_GLO_CFG_TX_DMA_BUSY |
+					MT_WFDMA0_GLO_CFG_RX_DMA_BUSY,
+					0, 100, 1))
+			return -ETIMEDOUT;
+
+		mt76_wr(dev, MT_WFDMA0_RST_DTX_PTR, ~0);
+		mt76_wr(dev, MT_WFDMA0_RST_DRX_PTR, ~0);
+		/* Ensure all DMA writes complete before polling status. */
+		wmb();
+		msleep(10);
+	} else {
+		ret = mt792x_dma_disable(dev, true);
+		if (ret)
+			return ret;
+	}
+
+	/* init tx queue - ring 0 */
 	ret = mt76_connac_init_tx_queues(dev->phy.mt76, MT7925_TXQ_BAND0,
 					 MT7925_TX_RING_SIZE,
 					 MT_TX_RING_BASE, NULL, 0);
@@ -241,20 +352,31 @@ static int mt7925_dma_init(struct mt792x_dev *dev)
 	if (ret)
 		return ret;
 
-	/* rx event */
+	/* rx MCU events */
 	ret = mt76_queue_alloc(dev, &dev->mt76.q_rx[MT_RXQ_MCU],
-			       MT7925_RXQ_MCU_WM, MT7925_RX_MCU_RING_SIZE,
+			       cfg->rxq_mcu_wm, MT7925_RX_MCU_RING_SIZE,
 			       MT_RX_BUF_SIZE, MT_RX_EVENT_RING_BASE);
 	if (ret)
 		return ret;
 
 	/* rx data */
 	ret = mt76_queue_alloc(dev, &dev->mt76.q_rx[MT_RXQ_MAIN],
-			       MT7925_RXQ_BAND0, MT7925_RX_RING_SIZE,
+			       cfg->rxq_band0, MT7925_RX_RING_SIZE,
 			       MT_RX_BUF_SIZE, MT_RX_DATA_RING_BASE);
 	if (ret)
 		return ret;
 
+	/* rx auxiliary data (MT7927: management frames on ring 7) */
+	if (cfg->rxq_data2) {
+		ret = mt76_queue_alloc(dev, &dev->mt76.q_rx[MT_RXQ_MCU_WA],
+				       cfg->rxq_data2,
+				       MT7925_RX_MCU_RING_SIZE,
+				       MT_RX_BUF_SIZE,
+				       MT_RX_DATA_RING_BASE);
+		if (ret)
+			return ret;
+	}
+
 	ret = mt76_init_queues(dev, mt792x_poll_rx);
 	if (ret < 0)
 		return ret;
@@ -373,6 +495,7 @@ static int mt7925_pci_probe(struct pci_dev *pdev,
 	dev->hif_ops = &mt7925_pcie_ops;
 	is_mt7927_hw = (pdev->device == 0x6639 || pdev->device == 0x7927);
 	dev->irq_map = is_mt7927_hw ? &mt7927_irq_map : &irq_map;
+	dev->dma_config = is_mt7927_hw ? &mt7927_dma_cfg : &mt7925_dma_cfg;
 	mt76_mmio_init(&dev->mt76, pcim_iomap_table(pdev)[0]);
 	tasklet_init(&mdev->irq_tasklet, mt792x_irq_tasklet, (unsigned long)dev);
 
diff --git a/drivers/net/wireless/mediatek/mt76/mt792x.h b/drivers/net/wireless/mediatek/mt76/mt792x.h
index 38790ef83e51..8a10438e26f9 100644
--- a/drivers/net/wireless/mediatek/mt76/mt792x.h
+++ b/drivers/net/wireless/mediatek/mt76/mt792x.h
@@ -203,6 +203,26 @@ struct mt792x_irq_map {
 	} rx;
 };
 
+struct mt792x_dma_config {
+	/* RX ring indices */
+	u8 rxq_band0;
+	u8 rxq_mcu_wm;
+	u8 rxq_data2;		/* 0 = not used */
+
+	/* Prefetch configuration */
+	void (*dma_prefetch)(struct mt792x_dev *dev);
+
+	/* GLO_CFG quirk bits to set/clear after DMA enable */
+	u32 glo_cfg_set;
+	u32 glo_cfg_clear;
+
+	/* GLO_CFG_EXT1 register address (chip-specific MMIO base) */
+	u32 glo_cfg_ext1;
+
+	/* Pre-ring-setup hook (NULL = not needed) */
+	int (*pre_ring_setup)(struct mt792x_dev *dev);
+};
+
 #define mt792x_init_reset(dev)		((dev)->hif_ops->init_reset(dev))
 #define mt792x_dev_reset(dev)		((dev)->hif_ops->reset(dev))
 #define mt792x_mcu_init(dev)		((dev)->hif_ops->mcu_init(dev))
@@ -250,6 +270,7 @@ struct mt792x_dev {
 	struct mt76_connac_coredump coredump;
 	const struct mt792x_hif_ops *hif_ops;
 	const struct mt792x_irq_map *irq_map;
+	const struct mt792x_dma_config *dma_config;
 
 	struct work_struct ipv6_ns_work;
 	struct delayed_work mlo_pm_work;
diff --git a/drivers/net/wireless/mediatek/mt76/mt792x_dma.c b/drivers/net/wireless/mediatek/mt76/mt792x_dma.c
index 1ddec7788b66..4a6794ca86b9 100644
--- a/drivers/net/wireless/mediatek/mt76/mt792x_dma.c
+++ b/drivers/net/wireless/mediatek/mt76/mt792x_dma.c
@@ -90,42 +90,36 @@ EXPORT_SYMBOL_GPL(mt792x_rx_poll_complete);
 #define PREFETCH(base, depth)	((base) << 16 | (depth))
 static void mt792x_dma_prefetch(struct mt792x_dev *dev)
 {
-	if (is_mt7925(&dev->mt76)) {
-		/* rx ring */
-		mt76_wr(dev, MT_WFDMA0_RX_RING0_EXT_CTRL, PREFETCH(0x0000, 0x4));
-		mt76_wr(dev, MT_WFDMA0_RX_RING1_EXT_CTRL, PREFETCH(0x0040, 0x4));
-		mt76_wr(dev, MT_WFDMA0_RX_RING2_EXT_CTRL, PREFETCH(0x0080, 0x4));
-		mt76_wr(dev, MT_WFDMA0_RX_RING3_EXT_CTRL, PREFETCH(0x00c0, 0x4));
-		/* tx ring */
-		mt76_wr(dev, MT_WFDMA0_TX_RING0_EXT_CTRL, PREFETCH(0x0100, 0x10));
-		mt76_wr(dev, MT_WFDMA0_TX_RING1_EXT_CTRL, PREFETCH(0x0200, 0x10));
-		mt76_wr(dev, MT_WFDMA0_TX_RING2_EXT_CTRL, PREFETCH(0x0300, 0x10));
-		mt76_wr(dev, MT_WFDMA0_TX_RING3_EXT_CTRL, PREFETCH(0x0400, 0x10));
-		mt76_wr(dev, MT_WFDMA0_TX_RING15_EXT_CTRL, PREFETCH(0x0500, 0x4));
-		mt76_wr(dev, MT_WFDMA0_TX_RING16_EXT_CTRL, PREFETCH(0x0540, 0x4));
-	} else {
-		/* rx ring */
-		mt76_wr(dev, MT_WFDMA0_RX_RING0_EXT_CTRL, PREFETCH(0x0, 0x4));
-		mt76_wr(dev, MT_WFDMA0_RX_RING2_EXT_CTRL, PREFETCH(0x40, 0x4));
-		mt76_wr(dev, MT_WFDMA0_RX_RING3_EXT_CTRL, PREFETCH(0x80, 0x4));
-		mt76_wr(dev, MT_WFDMA0_RX_RING4_EXT_CTRL, PREFETCH(0xc0, 0x4));
-		mt76_wr(dev, MT_WFDMA0_RX_RING5_EXT_CTRL, PREFETCH(0x100, 0x4));
-		/* tx ring */
-		mt76_wr(dev, MT_WFDMA0_TX_RING0_EXT_CTRL, PREFETCH(0x140, 0x4));
-		mt76_wr(dev, MT_WFDMA0_TX_RING1_EXT_CTRL, PREFETCH(0x180, 0x4));
-		mt76_wr(dev, MT_WFDMA0_TX_RING2_EXT_CTRL, PREFETCH(0x1c0, 0x4));
-		mt76_wr(dev, MT_WFDMA0_TX_RING3_EXT_CTRL, PREFETCH(0x200, 0x4));
-		mt76_wr(dev, MT_WFDMA0_TX_RING4_EXT_CTRL, PREFETCH(0x240, 0x4));
-		mt76_wr(dev, MT_WFDMA0_TX_RING5_EXT_CTRL, PREFETCH(0x280, 0x4));
-		mt76_wr(dev, MT_WFDMA0_TX_RING6_EXT_CTRL, PREFETCH(0x2c0, 0x4));
-		mt76_wr(dev, MT_WFDMA0_TX_RING16_EXT_CTRL, PREFETCH(0x340, 0x4));
-		mt76_wr(dev, MT_WFDMA0_TX_RING17_EXT_CTRL, PREFETCH(0x380, 0x4));
+	/* mt7925 family uses per-chip prefetch via dma_config callback */
+	if (dev->dma_config && dev->dma_config->dma_prefetch) {
+		dev->dma_config->dma_prefetch(dev);
+		return;
 	}
+
+	/* mt7921/mt7922 legacy prefetch */
+	/* rx ring */
+	mt76_wr(dev, MT_WFDMA0_RX_RING0_EXT_CTRL, PREFETCH(0x0, 0x4));
+	mt76_wr(dev, MT_WFDMA0_RX_RING2_EXT_CTRL, PREFETCH(0x40, 0x4));
+	mt76_wr(dev, MT_WFDMA0_RX_RING3_EXT_CTRL, PREFETCH(0x80, 0x4));
+	mt76_wr(dev, MT_WFDMA0_RX_RING4_EXT_CTRL, PREFETCH(0xc0, 0x4));
+	mt76_wr(dev, MT_WFDMA0_RX_RING5_EXT_CTRL, PREFETCH(0x100, 0x4));
+	/* tx ring */
+	mt76_wr(dev, MT_WFDMA0_TX_RING0_EXT_CTRL, PREFETCH(0x140, 0x4));
+	mt76_wr(dev, MT_WFDMA0_TX_RING1_EXT_CTRL, PREFETCH(0x180, 0x4));
+	mt76_wr(dev, MT_WFDMA0_TX_RING2_EXT_CTRL, PREFETCH(0x1c0, 0x4));
+	mt76_wr(dev, MT_WFDMA0_TX_RING3_EXT_CTRL, PREFETCH(0x200, 0x4));
+	mt76_wr(dev, MT_WFDMA0_TX_RING4_EXT_CTRL, PREFETCH(0x240, 0x4));
+	mt76_wr(dev, MT_WFDMA0_TX_RING5_EXT_CTRL, PREFETCH(0x280, 0x4));
+	mt76_wr(dev, MT_WFDMA0_TX_RING6_EXT_CTRL, PREFETCH(0x2c0, 0x4));
+	mt76_wr(dev, MT_WFDMA0_TX_RING16_EXT_CTRL, PREFETCH(0x340, 0x4));
+	mt76_wr(dev, MT_WFDMA0_TX_RING17_EXT_CTRL, PREFETCH(0x380, 0x4));
 }
 
 int mt792x_dma_enable(struct mt792x_dev *dev)
 {
-	/* configure perfetch settings */
+	const struct mt792x_dma_config *cfg = dev->dma_config;
+
+	/* configure prefetch settings */
 	mt792x_dma_prefetch(dev);
 
 	/* reset dma idx */
@@ -150,8 +144,16 @@ int mt792x_dma_enable(struct mt792x_dev *dev)
 	mt76_set(dev, MT_WFDMA0_GLO_CFG,
 		 MT_WFDMA0_GLO_CFG_TX_DMA_EN | MT_WFDMA0_GLO_CFG_RX_DMA_EN);
 
-	if (is_mt7925(&dev->mt76)) {
-		mt76_rmw(dev, MT_UWFDMA0_GLO_CFG_EXT1, BIT(28), BIT(28));
+	/* Apply chip-specific GLO_CFG quirk bits from DMA config */
+	if (cfg) {
+		if (cfg->glo_cfg_set)
+			mt76_set(dev, MT_WFDMA0_GLO_CFG, cfg->glo_cfg_set);
+		if (cfg->glo_cfg_clear)
+			mt76_clear(dev, MT_WFDMA0_GLO_CFG, cfg->glo_cfg_clear);
+	}
+
+	if (cfg && cfg->glo_cfg_ext1) {
+		mt76_rmw(dev, cfg->glo_cfg_ext1, BIT(28), BIT(28));
 		mt76_set(dev, MT_WFDMA0_INT_RX_PRI, 0x0F00);
 		mt76_set(dev, MT_WFDMA0_INT_TX_PRI, 0x7F00);
 	}
diff --git a/drivers/net/wireless/mediatek/mt76/mt792x_regs.h b/drivers/net/wireless/mediatek/mt76/mt792x_regs.h
index a8c8d7d6f565..1b9b51d43f79 100644
--- a/drivers/net/wireless/mediatek/mt76/mt792x_regs.h
+++ b/drivers/net/wireless/mediatek/mt76/mt792x_regs.h
@@ -299,7 +299,9 @@
 #define MT_WFDMA0_GLO_CFG_FIFO_LITTLE_ENDIAN	BIT(12)
 #define MT_WFDMA0_GLO_CFG_RX_WB_DDONE	BIT(13)
 #define MT_WFDMA0_GLO_CFG_CSR_DISP_BASE_PTR_CHAIN_EN BIT(15)
+#define MT_WFDMA0_GLO_CFG_CSR_LBK_RX_Q_SEL_EN	BIT(20)
 #define MT_WFDMA0_GLO_CFG_OMIT_RX_INFO_PFET2	BIT(21)
+#define MT_WFDMA0_GLO_CFG_ADDR_EXT_EN		BIT(26)
 #define MT_WFDMA0_GLO_CFG_OMIT_RX_INFO	BIT(27)
 #define MT_WFDMA0_GLO_CFG_OMIT_TX_INFO	BIT(28)
 #define MT_WFDMA0_GLO_CFG_CLK_GAT_DIS	BIT(30)
@@ -366,6 +368,16 @@
 #define MT_WFDMA_EXT_CSR_HIF_MISC	MT_WFDMA_EXT_CSR(0x44)
 #define MT_WFDMA_EXT_CSR_HIF_MISC_BUSY	BIT(0)
 
+/* MT7927 packed prefetch registers */
+#define MT_WFDMA_PREFETCH_CTRL		MT_WFDMA_EXT_CSR(0x30)
+#define MT_WFDMA_PREFETCH_CFG0		MT_WFDMA_EXT_CSR(0xf0)
+#define MT_WFDMA_PREFETCH_CFG1		MT_WFDMA_EXT_CSR(0xf4)
+#define MT_WFDMA_PREFETCH_CFG2		MT_WFDMA_EXT_CSR(0xf8)
+#define MT_WFDMA_PREFETCH_CFG3		MT_WFDMA_EXT_CSR(0xfc)
+
+/* MT7927 GLO_CFG extended register */
+#define MT_WFDMA0_GLO_CFG_EXT1		MT_WFDMA0(0x2b4)
+
 #define MT_SWDEF_BASE			0x41f200
 #define MT_SWDEF(ofs)			(MT_SWDEF_BASE + (ofs))
 #define MT_SWDEF_MODE			MT_SWDEF(0x3c)

-- 
2.53.0

[PATCH v2 10/13] wifi: mt76: mt7925: add MT7927 hardware initialization

[Javier Tia]

Add MT7927-specific hardware initialization for the Filogic 380 combo
chip, which has an additional CBInfra (ConnectaBus Infrastructure) bus
fabric between PCIe and the WiFi subsystem.

CBTOP remap: configure PCIe address mapping so MMIO reads to WiFi
registers return valid data instead of zero.

Chip initialization sequence:
  1. WF subsystem reset via CBInfra RGU
  2. MCU ownership acquisition
  3. Poll ROMCODE_INDEX for MCU idle (0x1D1E)
  4. MCIF remap for host DMA
  5. PCIe sleep disable

Probe flow changes for MT7927:
  - Skip early CLR_OWN (CBTOP not yet configured)
  - Force chip ID if CHIPID register returns stale value
  - Replace wfsys_reset with mt7927_chip_init

CLR_OWN skip in mt7925e_mcu_init(): every CLR_OWN triggers the ROM to
reinitialize WFDMA, destroying ring configuration set up by DMA init.
The controlled SET_OWN/CLR_OWN is already handled in the DMA pre-ring
setup hook.

DBDC enable: MT7927 firmware defaults to single-band (2.4GHz only).
Send explicit SET_DBDC_PARMS to enable dual-band operation.

CNM force: MT7927 firmware lacks the connac2 feature trailer, causing
channel context ops to be replaced with stubs. Force the CNM flag at
probe to preserve ROC support needed for authentication.

mac_reset guard: return -EOPNOTSUPP for MT7927 since the reset path
performs CLR_OWN and logic reset that destroy DMA configuration. Full
reset recovery is follow-up work.

Register values derived from Loong0x00's reverse-engineered MT7927
driver.

Reported-by: 张旭涵 <Loong.0x00@gmail.com>
Closes: https://github.com/openwrt/mt76/issues/927
Tested-by: Marcin FM <marcin@lgic.pl>
Tested-by: Cristian-Florin Radoi <radoi.chris@gmail.com>
Tested-by: George Salukvadze <giosal90@gmail.com>
Tested-by: Evgeny Kapusta <3193631@gmail.com>
Tested-by: Samu Toljamo <samu.toljamo@gmail.com>
Tested-by: Ariel Rosenfeld <ariel.rosenfeld.750@gmail.com>
Tested-by: Chapuis Dario <chapuisdario4@gmail.com>
Tested-by: Thibaut François <tibo@humeurlibre.fr>
Tested-by: 张旭涵 <Loong.0x00@gmail.com>
Signed-off-by: Javier Tia <floss@jetm.me>
---
 drivers/net/wireless/mediatek/mt76/mt7925/init.c   |  13 +++
 drivers/net/wireless/mediatek/mt76/mt7925/pci.c    | 103 +++++++++++++++++++--
 .../net/wireless/mediatek/mt76/mt7925/pci_mac.c    |   9 ++
 .../net/wireless/mediatek/mt76/mt7925/pci_mcu.c    |  20 ++--
 drivers/net/wireless/mediatek/mt76/mt792x_regs.h   |  18 ++++
 5 files changed, 149 insertions(+), 14 deletions(-)

diff --git a/drivers/net/wireless/mediatek/mt76/mt7925/init.c b/drivers/net/wireless/mediatek/mt76/mt7925/init.c
index 3ce5d6fcc69d..c4c99380f5b5 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7925/init.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7925/init.c
@@ -115,6 +115,19 @@ static int __mt7925_init_hardware(struct mt792x_dev *dev)
 	if (ret)
 		goto out;
 
+	/* MT7927: Enable DBDC (dual-band) mode. Without this, firmware
+	 * defaults to 2.4GHz only and ignores 5GHz scan requests.
+	 * MT7925 firmware handles DBDC automatically.
+	 */
+	if (is_mt7927(&dev->mt76)) {
+		ret = mt7925_mcu_set_dbdc(&dev->mphy, true);
+		if (ret) {
+			dev_warn(dev->mt76.dev,
+				 "MT7927 DBDC enable failed: %d\n", ret);
+			ret = 0;
+		}
+	}
+
 out:
 	return ret;
 }
diff --git a/drivers/net/wireless/mediatek/mt76/mt7925/pci.c b/drivers/net/wireless/mediatek/mt76/mt7925/pci.c
index 415194a440f8..393d9f408b84 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7925/pci.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7925/pci.c
@@ -400,6 +400,64 @@ static const struct mt792x_irq_map mt7927_irq_map = {
 		.wm2_complete_mask = MT7927_RX_DONE_INT_ENA7,
 	},
 };
+
+static int mt7927_chip_init(struct mt792x_dev *dev)
+{
+	struct mt76_dev *mdev = &dev->mt76;
+	u32 val;
+
+	/* EMI sleep protect */
+	mt76_rmw_field(dev, MT_HW_EMI_CTL, MT_HW_EMI_CTL_SLPPROT_EN, 1);
+
+	/* WF subsystem reset via CBInfra RGU */
+	mt76_set(dev, MT7927_CBINFRA_RGU_WF_RST,
+		 MT7927_CBINFRA_RGU_WF_RST_WF_SUBSYS);
+	msleep(1);
+	mt76_clear(dev, MT7927_CBINFRA_RGU_WF_RST,
+		   MT7927_CBINFRA_RGU_WF_RST_WF_SUBSYS);
+	msleep(5);
+
+	/* MCU ownership */
+	mt76_wr(dev, MT7927_CBINFRA_MCU_OWN_SET, BIT(0));
+
+	/* Poll ROMCODE_INDEX for MCU idle */
+	if (!__mt76_poll_msec(mdev, MT7927_ROMCODE_INDEX,
+			      0xffff, MT7927_MCU_IDLE_VALUE, 2000)) {
+		val = mt76_rr(dev, MT7927_ROMCODE_INDEX);
+		dev_err(mdev->dev,
+			"MT7927 MCU idle timeout (ROMCODE_INDEX=0x%04x)\n",
+			val & 0xffff);
+		return -ETIMEDOUT;
+	}
+
+	/* MCIF remap - MCU needs this to DMA to host memory */
+	mt76_wr(dev, MT7927_MCIF_REMAP_WF_1_BA,
+		MT7927_MCIF_REMAP_WF_1_BA_VAL);
+
+	/* Disable PCIe sleep */
+	mt76_wr(dev, MT7927_CBINFRA_SLP_CTRL, 0xffffffff);
+
+	/* Clear CONNINFRA wakeup */
+	mt76_wr(dev, MT7927_CBINFRA_WAKEPU_TOP, 0x0);
+
+	return 0;
+}
+
+static void mt7927_cbtop_remap(struct mt792x_dev *dev)
+{
+	/* CONNINFRA wakeup - required before CBInfra register access */
+	mt76_wr(dev, MT7927_CBINFRA_WAKEPU_TOP, 0x1);
+	usleep_range(1000, 2000);
+
+	/* Configure CBTOP PCIe address remap for WF and BT */
+	mt76_wr(dev, MT7927_CBINFRA_MISC0_REMAP_WF,
+		MT7927_CBINFRA_REMAP_WF_VAL);
+	mt76_wr(dev, MT7927_CBINFRA_MISC0_REMAP_BT,
+		MT7927_CBINFRA_REMAP_BT_VAL);
+
+	/* Readback to push writes */
+	mt76_rr(dev, MT7927_CBINFRA_MISC0_REMAP_WF);
+}
 static int mt7925_pci_probe(struct pci_dev *pdev,
 			    const struct pci_device_id *id)
 {
@@ -482,6 +540,17 @@ static int mt7925_pci_probe(struct pci_dev *pdev,
 		goto err_free_pci_vec;
 	}
 
+	/* MT7927 firmware lacks the connac2 feature trailer, so
+	 * mt792x_get_mac80211_ops() can't detect CNM support and
+	 * replaces chanctx/ROC/mgd_prepare_tx ops with stubs.
+	 * Force CNM and restore the original mt7925 ops.
+	 */
+	if ((pdev->device == 0x6639 || pdev->device == 0x7927) &&
+	    !(features & MT792x_FW_CAP_CNM)) {
+		features |= MT792x_FW_CAP_CNM;
+		memcpy(ops, &mt7925_ops, sizeof(*ops));
+	}
+
 	mdev = mt76_alloc_device(&pdev->dev, sizeof(*dev), ops, &drv_ops);
 	if (!mdev) {
 		ret = -ENOMEM;
@@ -517,25 +586,43 @@ static int mt7925_pci_probe(struct pci_dev *pdev,
 
 	if (!mt7925_disable_aspm && mt76_pci_aspm_supported(pdev))
 		dev->aspm_supported = true;
-
 	ret = __mt792x_mcu_fw_pmctrl(dev);
 	if (ret)
 		goto err_free_dev;
 
-	ret = __mt792xe_mcu_drv_pmctrl(dev);
-	if (ret)
-		goto err_free_dev;
+	if (!is_mt7927_hw) {
+		ret = __mt792xe_mcu_drv_pmctrl(dev);
+		if (ret)
+			goto err_free_dev;
+	}
+
+	if (is_mt7927_hw)
+		mt7927_cbtop_remap(dev);
 
 	mdev->rev = (mt76_rr(dev, MT_HW_CHIPID) << 16) |
 		    (mt76_rr(dev, MT_HW_REV) & 0xff);
 
 	dev_info(mdev->dev, "ASIC revision: %04x\n", mdev->rev);
 
-	mt76_rmw_field(dev, MT_HW_EMI_CTL, MT_HW_EMI_CTL_SLPPROT_EN, 1);
+	/* Force chip ID for MT7927 hardware if CHIPID read returns garbage */
+	if (is_mt7927_hw && (mdev->rev >> 16) != 0x7927) {
+		dev_info(mdev->dev,
+			 "MT7927 raw CHIPID=0x%04x, forcing chip=0x7927\n",
+			 (u16)(mdev->rev >> 16));
+		mdev->rev = (0x7927 << 16) | (mdev->rev & 0xff);
+	}
 
-	ret = mt792x_wfsys_reset(dev);
-	if (ret)
-		goto err_free_dev;
+	if (is_mt7927_hw) {
+		ret = mt7927_chip_init(dev);
+		if (ret)
+			goto err_free_dev;
+	} else {
+		mt76_rmw_field(dev, MT_HW_EMI_CTL,
+			       MT_HW_EMI_CTL_SLPPROT_EN, 1);
+		ret = mt792x_wfsys_reset(dev);
+		if (ret)
+			goto err_free_dev;
+	}
 
 	mt76_wr(dev, irq_map.host_irq_enable, 0);
 
diff --git a/drivers/net/wireless/mediatek/mt76/mt7925/pci_mac.c b/drivers/net/wireless/mediatek/mt76/mt7925/pci_mac.c
index 1626a3684082..9b3eeb1328f6 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7925/pci_mac.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7925/pci_mac.c
@@ -72,6 +72,15 @@ int mt7925e_mac_reset(struct mt792x_dev *dev)
 	const struct mt792x_irq_map *irq_map = dev->irq_map;
 	int i, err;
 
+	/* MT7927: CLR_OWN and WPDMA reset destroy DMA ring configuration.
+	 * A full reset requires re-running mt7927_dma_init() which is not
+	 * yet implemented in the recovery path.
+	 */
+	if (is_mt7927(&dev->mt76)) {
+		dev_warn(dev->mt76.dev, "MT7927 mac_reset not supported, reload module to recover\n");
+		return -EOPNOTSUPP;
+	}
+
 	mt792xe_mcu_drv_pmctrl(dev);
 
 	mt76_connac_free_pending_tx_skbs(&dev->pm, NULL);
diff --git a/drivers/net/wireless/mediatek/mt76/mt7925/pci_mcu.c b/drivers/net/wireless/mediatek/mt76/mt7925/pci_mcu.c
index 6cceff88c656..1f50d1ef6fb6 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7925/pci_mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7925/pci_mcu.c
@@ -35,13 +35,21 @@ int mt7925e_mcu_init(struct mt792x_dev *dev)
 
 	dev->mt76.mcu_ops = &mt7925_mcu_ops;
 
-	err = mt792xe_mcu_fw_pmctrl(dev);
-	if (err)
-		return err;
+	if (is_mt7927(&dev->mt76)) {
+		/* MT7927: CLR_OWN was already done in mt7927_dma_init().
+		 * The ROM re-initializes WFDMA on every CLR_OWN, wiping
+		 * ring and prefetch config. Skip SET_OWN/CLR_OWN here
+		 * to preserve DMA state.
+		 */
+	} else {
+		err = mt792xe_mcu_fw_pmctrl(dev);
+		if (err)
+			return err;
 
-	err = __mt792xe_mcu_drv_pmctrl(dev);
-	if (err)
-		return err;
+		err = __mt792xe_mcu_drv_pmctrl(dev);
+		if (err)
+			return err;
+	}
 
 	mt76_rmw_field(dev, MT_PCIE_MAC_PM, MT_PCIE_MAC_PM_L0S_DIS, 1);
 
diff --git a/drivers/net/wireless/mediatek/mt76/mt792x_regs.h b/drivers/net/wireless/mediatek/mt76/mt792x_regs.h
index 1b9b51d43f79..9c4bbbe898f3 100644
--- a/drivers/net/wireless/mediatek/mt76/mt792x_regs.h
+++ b/drivers/net/wireless/mediatek/mt76/mt792x_regs.h
@@ -499,4 +499,22 @@
 #define WFSYS_SW_RST_B			BIT(0)
 #define WFSYS_SW_INIT_DONE		BIT(4)
 
+/* CBInfra registers - MT7927 combo chip */
+#define MT7927_CBINFRA_WAKEPU_TOP		0xe01a0
+#define MT7927_CBINFRA_MISC0_REMAP_WF		0x1f6554
+#define MT7927_CBINFRA_MISC0_REMAP_BT		0x1f6558
+#define MT7927_CBINFRA_RGU_WF_RST		0x1f8600
+#define MT7927_CBINFRA_RGU_WF_RST_WF_SUBSYS	BIT(4)
+#define MT7927_CBINFRA_MCU_OWN_SET		0x1f5034
+#define MT7927_CBINFRA_SLP_CTRL			0x1f5018
+#define MT7927_ROMCODE_INDEX			0xc1604
+#define MT7927_MCU_IDLE_VALUE			0x1d1e
+#define MT7927_MCIF_REMAP_WF_1_BA		0xd1034
+
+/* CBInfra CBTOP remap values */
+#define MT7927_CBINFRA_REMAP_WF_VAL		0x74037001
+#define MT7927_CBINFRA_REMAP_BT_VAL		0x70007000
+
+#define MT7927_MCIF_REMAP_WF_1_BA_VAL		0x18051803
+
 #endif /* __MT792X_REGS_H */

-- 
2.53.0

[PATCH v2 11/13] wifi: mt76: mt7925: fix band_idx for stable 5GHz/6GHz operation

[Javier Tia]

The MT7927 firmware requires explicit band_idx assignment (0 for 2.4GHz,
1 for 5GHz/6GHz) instead of 0xff (auto-select) used by MT7925. Without
this, the firmware selects the wrong radio for 5GHz and 6GHz
connections, causing WPA 4-way handshake timeout and data plane failures
on those bands.

Introduce mt7925_band_idx(dev, band) helper that encapsulates the
chip check: returns the hardware band index for MT7927, or 0xff
(auto-select) for MT7925. Replace all scattered is_mt7927() + band
mapping patterns with the unified helper across BSS creation, channel
context assignment, ROC requests, and BSS info TLVs.

For ROC requests on MT7925, the helper returns 0xff which is then
refined to 0xfe (BAND_ALL with DBDC) for JOIN-type requests.

Also clamp invalid grant band_idx values using rfband as fallback, and
process grants for all MT7927 request types (not just JOIN).

Originally discovered and fixed by marcin-fm; Loong0x00 contributed
additional improvements based on marcin-fm's patch.

Co-developed-by: Marcin FM <marcin@lgic.pl>
Signed-off-by: Marcin FM <marcin@lgic.pl>
Co-developed-by: 张旭涵 <Loong.0x00@gmail.com>
Signed-off-by: 张旭涵 <Loong.0x00@gmail.com>
Tested-by: Marcin FM <marcin@lgic.pl>
Tested-by: Cristian-Florin Radoi <radoi.chris@gmail.com>
Tested-by: George Salukvadze <giosal90@gmail.com>
Tested-by: Evgeny Kapusta <3193631@gmail.com>
Tested-by: Samu Toljamo <samu.toljamo@gmail.com>
Tested-by: Ariel Rosenfeld <ariel.rosenfeld.750@gmail.com>
Tested-by: Chapuis Dario <chapuisdario4@gmail.com>
Tested-by: Thibaut François <tibo@humeurlibre.fr>
Tested-by: 张旭涵 <Loong.0x00@gmail.com>
Signed-off-by: Javier Tia <floss@jetm.me>
---
 drivers/net/wireless/mediatek/mt76/mt7925/main.c   | 35 ++++++++++++++-
 drivers/net/wireless/mediatek/mt76/mt7925/mcu.c    | 50 +++++++++++++++++-----
 drivers/net/wireless/mediatek/mt76/mt7925/mt7925.h |  7 +++
 3 files changed, 80 insertions(+), 12 deletions(-)

diff --git a/drivers/net/wireless/mediatek/mt76/mt7925/main.c b/drivers/net/wireless/mediatek/mt76/mt7925/main.c
index cd043ac266fb..25f8c5a28e5c 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7925/main.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7925/main.c
@@ -400,7 +400,19 @@ static int mt7925_mac_link_bss_add(struct mt792x_dev *dev,
 
 	mconf->mt76.omac_idx = ieee80211_vif_is_mld(vif) ?
 			       0 : mconf->mt76.idx;
-	mconf->mt76.band_idx = 0xff;
+
+	{
+		struct ieee80211_channel *chan = NULL;
+
+		if (link_conf->chanreq.oper.chan)
+			chan = link_conf->chanreq.oper.chan;
+		else if (mvif->phy->mt76->chandef.chan)
+			chan = mvif->phy->mt76->chandef.chan;
+
+		mconf->mt76.band_idx = chan ?
+			mt7925_band_idx(&dev->mt76, chan->band) : 0xff;
+	}
+
 	mconf->mt76.wmm_idx = ieee80211_vif_is_mld(vif) ?
 			      0 : mconf->mt76.idx % MT76_CONNAC_MAX_WMM_SETS;
 	mconf->mt76.link_idx = hweight16(mvif->valid_links);
@@ -417,7 +429,8 @@ static int mt7925_mac_link_bss_add(struct mt792x_dev *dev,
 
 	mlink->wcid.idx = idx;
 	mlink->wcid.tx_info |= MT_WCID_TX_INFO_SET;
-	mt76_wcid_init(&mlink->wcid, 0);
+	mt76_wcid_init(&mlink->wcid,
+		       mconf->mt76.band_idx == 0xff ? 0 : mconf->mt76.band_idx);
 
 	mt7925_mac_wtbl_update(dev, idx,
 			       MT_WTBL_UPDATE_ADM_COUNT_CLEAR);
@@ -2119,9 +2132,12 @@ static int mt7925_assign_vif_chanctx(struct ieee80211_hw *hw,
 {
 	struct mt792x_chanctx *mctx = (struct mt792x_chanctx *)ctx->drv_priv;
 	struct mt792x_vif *mvif = (struct mt792x_vif *)vif->drv_priv;
+	struct mt792x_link_sta *mlink;
 	struct mt792x_dev *dev = mt792x_hw_dev(hw);
 	struct ieee80211_bss_conf *pri_link_conf;
 	struct mt792x_bss_conf *mconf;
+	u8 band_idx;
+	u8 old_band;
 
 	mutex_lock(&dev->mt76.mutex);
 
@@ -2137,6 +2153,21 @@ static int mt7925_assign_vif_chanctx(struct ieee80211_hw *hw,
 		mconf = &mvif->bss_conf;
 	}
 
+	old_band = mconf->mt76.band_idx;
+	if (ctx->def.chan) {
+		band_idx = mt7925_band_idx(&dev->mt76, ctx->def.chan->band);
+		mconf->mt76.band_idx = band_idx;
+		mlink = mt792x_sta_to_link(&mvif->sta, mconf->link_id);
+		if (mlink)
+			mlink->wcid.phy_idx = band_idx;
+
+		if (old_band != band_idx && vif->type == NL80211_IFTYPE_STATION &&
+		    mlink)
+			mt76_connac_mcu_uni_add_dev(&dev->mphy, link_conf,
+						    &mconf->mt76, &mlink->wcid,
+						    true);
+	}
+
 	mconf->mt76.ctx = ctx;
 	mctx->bss_conf = mconf;
 	mutex_unlock(&dev->mt76.mutex);
diff --git a/drivers/net/wireless/mediatek/mt76/mt7925/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7925/mcu.c
index a7f27c5014d5..0755fee6cdff 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7925/mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7925/mcu.c
@@ -301,16 +301,36 @@ mt7925_mcu_connection_loss_event(struct mt792x_dev *dev, struct sk_buff *skb)
 static void
 mt7925_mcu_roc_iter(void *priv, u8 *mac, struct ieee80211_vif *vif)
 {
-	struct mt76_vif_link *mvif = (struct mt76_vif_link *)vif->drv_priv;
+	struct mt792x_vif *mvif = (struct mt792x_vif *)vif->drv_priv;
 	struct mt7925_roc_grant_tlv *grant = priv;
+	u8 band_idx = grant->dbdcband;
 
 	if (ieee80211_vif_is_mld(vif) && vif->type == NL80211_IFTYPE_STATION)
 		return;
 
-	if (mvif->idx != grant->bss_idx)
+	if (mvif->bss_conf.mt76.idx != grant->bss_idx)
 		return;
 
-	mvif->band_idx = grant->dbdcband;
+	/* MT7927 firmware requires band_idx 0 (2.4G) or 1 (5/6G).
+	 * Clamp invalid grant values using rfband as fallback.
+	 */
+	if (is_mt7927(&mvif->phy->dev->mt76) && band_idx > 1) {
+		switch (grant->rfband) {
+		case 1: /* 2.4 GHz */
+			band_idx = 0;
+			break;
+		case 2: /* 5 GHz */
+		case 3: /* 6 GHz */
+			band_idx = 1;
+			break;
+		default:
+			band_idx = mvif->bss_conf.mt76.band_idx <= 1 ?
+				   mvif->bss_conf.mt76.band_idx : 0;
+			break;
+		}
+	}
+
+	mvif->bss_conf.mt76.band_idx = band_idx;
 }
 
 static void mt7925_mcu_roc_handle_grant(struct mt792x_dev *dev,
@@ -327,10 +347,11 @@ static void mt7925_mcu_roc_handle_grant(struct mt792x_dev *dev,
 
 	if (grant->reqtype == MT7925_ROC_REQ_ROC)
 		ieee80211_ready_on_channel(hw);
-	else if (grant->reqtype == MT7925_ROC_REQ_JOIN)
+	else if (is_mt7927(&dev->mt76) || grant->reqtype == MT7925_ROC_REQ_JOIN)
 		ieee80211_iterate_active_interfaces_atomic(hw,
 						IEEE80211_IFACE_ITER_RESUME_ALL,
 						mt7925_mcu_roc_iter, grant);
+
 	dev->phy.roc_grant = true;
 	wake_up(&dev->phy.roc_wait);
 	duration = le32_to_cpu(grant->max_interval);
@@ -1378,10 +1399,14 @@ int mt7925_mcu_set_mlo_roc(struct mt792x_bss_conf *mconf, u16 sel_links,
 		req.roc[i].center_chan2 = 0;
 		req.roc[i].center_chan2_from_ap = 0;
 
-		/* STR : 0xfe indicates BAND_ALL with enabling DBDC
-		 * EMLSR : 0xff indicates (BAND_AUTO) without DBDC
-		 */
-		req.roc[i].dbdcband = type == MT7925_ROC_REQ_JOIN ? 0xfe : 0xff;
+		req.roc[i].dbdcband =
+			mt7925_band_idx(&mvif->phy->dev->mt76, chan->band);
+		if (req.roc[i].dbdcband == 0xff)
+			/* STR : 0xfe indicates BAND_ALL with enabling DBDC
+			 * EMLSR : 0xff indicates (BAND_AUTO) without DBDC
+			 */
+			req.roc[i].dbdcband = type == MT7925_ROC_REQ_JOIN ?
+					      0xfe : 0xff;
 
 		if (chan->hw_value < center_ch)
 			req.roc[i].sco = 1; /* SCA */
@@ -1419,7 +1444,8 @@ int mt7925_mcu_set_roc(struct mt792x_phy *phy, struct mt792x_bss_conf *mconf,
 			.bw_from_ap = CMD_CBW_20MHZ,
 			.center_chan = center_ch,
 			.center_chan_from_ap = center_ch,
-			.dbdcband = 0xff, /* auto */
+			.dbdcband = mt7925_band_idx(&dev->mt76,
+						    chan->band),
 		},
 	};
 
@@ -1466,7 +1492,9 @@ int mt7925_mcu_abort_roc(struct mt792x_phy *phy, struct mt792x_bss_conf *mconf,
 			.len = cpu_to_le16(sizeof(struct roc_abort_tlv)),
 			.tokenid = token_id,
 			.bss_idx = mconf->mt76.idx,
-			.dbdcband = 0xff, /* auto*/
+			.dbdcband = mconf->mt76.band_idx <= 1 ?
+					    mconf->mt76.band_idx :
+					    0xff, /* auto */
 		},
 	};
 
@@ -2499,6 +2527,8 @@ mt7925_mcu_bss_basic_tlv(struct sk_buff *skb,
 	basic_req->phymode_ext = mt7925_get_phy_mode_ext(phy, vif, band,
 							 link_sta);
 
+	mconf->mt76.band_idx = mt7925_band_idx(phy->dev, band);
+
 	if (band == NL80211_BAND_2GHZ)
 		basic_req->nonht_basic_phy = cpu_to_le16(PHY_TYPE_ERP_INDEX);
 	else
diff --git a/drivers/net/wireless/mediatek/mt76/mt7925/mt7925.h b/drivers/net/wireless/mediatek/mt76/mt7925/mt7925.h
index 6b9bf1b89032..2f908d159e30 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7925/mt7925.h
+++ b/drivers/net/wireless/mediatek/mt76/mt7925/mt7925.h
@@ -63,6 +63,13 @@ enum mt7925_roc_req {
 	MT7925_ROC_REQ_NUM
 };
 
+static inline u8 mt7925_band_idx(struct mt76_dev *dev, enum nl80211_band band)
+{
+	if (is_mt7927(dev))
+		return band == NL80211_BAND_2GHZ ? 0 : 1;
+	return 0xff; /* auto-select for mt7925 */
+}
+
 enum {
 	UNI_EVENT_ROC_GRANT = 0,
 	UNI_EVENT_ROC_GRANT_SUB_LINK = 4,

-- 
2.53.0

[PATCH v2 12/13] wifi: mt76: mt7925: enable low power support for MT7927

[Javier Tia]

Enable runtime PM and deep sleep for MT7927 now that the DMA wake path
properly restores all MT7927-specific GLO_CFG bits (ADDR_EXT_EN,
CSR_LBK_RX_Q_SEL_EN, FW_DWLD_BYPASS_DMASHDL) via the DMA config
struct on every PM wake cycle.

Disable PCIe ASPM unconditionally for MT7927. The CONNINFRA power
domain and WFDMA register access are unreliable with PCIe L1 active,
causing throughput to drop from 1+ Gbps to ~200 Mbps. L0s savings are
negligible for a PCIe WLAN card, and mt76_pci_disable_aspm() handles
both device and parent bridge in one call.

Tested-by: Marcin FM <marcin@lgic.pl>
Tested-by: Cristian-Florin Radoi <radoi.chris@gmail.com>
Tested-by: George Salukvadze <giosal90@gmail.com>
Tested-by: Evgeny Kapusta <3193631@gmail.com>
Tested-by: Samu Toljamo <samu.toljamo@gmail.com>
Tested-by: Ariel Rosenfeld <ariel.rosenfeld.750@gmail.com>
Tested-by: Chapuis Dario <chapuisdario4@gmail.com>
Tested-by: Thibaut François <tibo@humeurlibre.fr>
Tested-by: 张旭涵 <Loong.0x00@gmail.com>
Signed-off-by: Javier Tia <floss@jetm.me>
---
 drivers/net/wireless/mediatek/mt76/mt7925/pci.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/drivers/net/wireless/mediatek/mt76/mt7925/pci.c b/drivers/net/wireless/mediatek/mt76/mt7925/pci.c
index 393d9f408b84..693e08f35d68 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7925/pci.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7925/pci.c
@@ -530,7 +530,13 @@ static int mt7925_pci_probe(struct pci_dev *pdev,
 	if (ret)
 		goto err_free_pci_vec;
 
-	if (mt7925_disable_aspm)
+	is_mt7927_hw = (pdev->device == 0x6639 || pdev->device == 0x7927);
+
+	/* MT7927: CONNINFRA power domain and WFDMA register access are
+	 * unreliable with PCIe L1 active, causing throughput to drop
+	 * from 1+ Gbps to ~200 Mbps. Disable ASPM unconditionally.
+	 */
+	if (mt7925_disable_aspm || is_mt7927_hw)
 		mt76_pci_disable_aspm(pdev);
 
 	ops = mt792x_get_mac80211_ops(&pdev->dev, &mt7925_ops,
@@ -562,7 +568,6 @@ static int mt7925_pci_probe(struct pci_dev *pdev,
 	dev = container_of(mdev, struct mt792x_dev, mt76);
 	dev->fw_features = features;
 	dev->hif_ops = &mt7925_pcie_ops;
-	is_mt7927_hw = (pdev->device == 0x6639 || pdev->device == 0x7927);
 	dev->irq_map = is_mt7927_hw ? &mt7927_irq_map : &irq_map;
 	dev->dma_config = is_mt7927_hw ? &mt7927_dma_cfg : &mt7925_dma_cfg;
 	mt76_mmio_init(&dev->mt76, pcim_iomap_table(pdev)[0]);

-- 
2.53.0

[PATCH v2 13/13] wifi: mt76: mt7925: enable MT7927 PCI device IDs

[Javier Tia]

Add PCI device table entries for MT7927 hardware variants:
  - 14c3:7927 (ASUS ROG Crosshair X870E Hero, Lenovo Legion Pro 7)
  - 14c3:6639 (Foxconn/Azurewave modules)
  - 14c3:0738 (AMD RZ738 / MediaTek MT7927)

This is the final patch in the series, enabling MT7927 device
enumeration after all infrastructure (DMA, IRQ, HW init, band index,
power management) is in place.

Tested-by: Marcin FM <marcin@lgic.pl>
Tested-by: Cristian-Florin Radoi <radoi.chris@gmail.com>
Tested-by: George Salukvadze <giosal90@gmail.com>
Tested-by: Evgeny Kapusta <3193631@gmail.com>
Tested-by: Samu Toljamo <samu.toljamo@gmail.com>
Tested-by: Ariel Rosenfeld <ariel.rosenfeld.750@gmail.com>
Tested-by: Chapuis Dario <chapuisdario4@gmail.com>
Tested-by: Thibaut François <tibo@humeurlibre.fr>
Tested-by: 张旭涵 <Loong.0x00@gmail.com>
Signed-off-by: Javier Tia <floss@jetm.me>
---
 drivers/net/wireless/mediatek/mt76/mt7925/pci.c | 29 +++++++++++++++----------
 1 file changed, 18 insertions(+), 11 deletions(-)

diff --git a/drivers/net/wireless/mediatek/mt76/mt7925/pci.c b/drivers/net/wireless/mediatek/mt76/mt7925/pci.c
index 693e08f35d68..00c3601f14ff 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7925/pci.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7925/pci.c
@@ -16,6 +16,12 @@ static const struct pci_device_id mt7925_pci_device_table[] = {
 		.driver_data = (kernel_ulong_t)MT7925_FIRMWARE_WM },
 	{ PCI_DEVICE(PCI_VENDOR_ID_MEDIATEK, 0x0717),
 		.driver_data = (kernel_ulong_t)MT7925_FIRMWARE_WM },
+	{ PCI_DEVICE(PCI_VENDOR_ID_MEDIATEK, 0x7927),
+		.driver_data = (kernel_ulong_t)MT7927_FIRMWARE_WM },
+	{ PCI_DEVICE(PCI_VENDOR_ID_MEDIATEK, 0x6639),
+		.driver_data = (kernel_ulong_t)MT7927_FIRMWARE_WM },
+	{ PCI_DEVICE(PCI_VENDOR_ID_MEDIATEK, 0x0738),
+		.driver_data = (kernel_ulong_t)MT7927_FIRMWARE_WM },
 	{ },
 };
 
@@ -530,7 +536,8 @@ static int mt7925_pci_probe(struct pci_dev *pdev,
 	if (ret)
 		goto err_free_pci_vec;
 
-	is_mt7927_hw = (pdev->device == 0x6639 || pdev->device == 0x7927);
+	is_mt7927_hw = (pdev->device == 0x6639 || pdev->device == 0x7927 ||
+			pdev->device == 0x0738);
 
 	/* MT7927: CONNINFRA power domain and WFDMA register access are
 	 * unreliable with PCIe L1 active, causing throughput to drop
@@ -546,16 +553,16 @@ static int mt7925_pci_probe(struct pci_dev *pdev,
 		goto err_free_pci_vec;
 	}
 
-	/* MT7927 firmware lacks the connac2 feature trailer, so
-	 * mt792x_get_mac80211_ops() can't detect CNM support and
-	 * replaces chanctx/ROC/mgd_prepare_tx ops with stubs.
-	 * Force CNM and restore the original mt7925 ops.
-	 */
-	if ((pdev->device == 0x6639 || pdev->device == 0x7927) &&
-	    !(features & MT792x_FW_CAP_CNM)) {
-		features |= MT792x_FW_CAP_CNM;
-		memcpy(ops, &mt7925_ops, sizeof(*ops));
-	}
+		/* MT7927 firmware lacks the connac2 feature trailer, so
+		 * mt792x_get_mac80211_ops() can't detect CNM support and
+		 * replaces chanctx/ROC/mgd_prepare_tx ops with stubs.
+		 * Force CNM and restore the original mt7925 ops.
+		 */
+		if ((pdev->device == 0x6639 || pdev->device == 0x7927 ||
+		     pdev->device == 0x0738) && !(features & MT792x_FW_CAP_CNM)) {
+			features |= MT792x_FW_CAP_CNM;
+			memcpy(ops, &mt7925_ops, sizeof(*ops));
+		}
 
 	mdev = mt76_alloc_device(&pdev->dev, sizeof(*dev), ops, &drv_ops);
 	if (!mdev) {

-- 
2.53.0