Commit Graph

1428804 Commits

Author SHA1 Message Date
Sean Wang
ea757740dd wifi: mt76: mt7925: pass WCID indices to bss_basic_tlv()
Drop the mt792x_sta_to_link() lookup in mt7925_mcu_bss_basic_tlv() and
pass the resolved WCID indices from the caller instead. The link
context is already known, so the lookup is redundant.

This makes link ownership explicit and keeps the helper lookup-free.

No functional change intended.

Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Link: https://patch.msgid.link/20260306232238.2039675-3-sean.wang@kernel.org
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2026-03-24 15:49:31 +00:00
Sean Wang
a1353d994c wifi: mt76: mt7925: pass mlink to sta_amsdu_tlv()
Drop the mt792x_sta_to_link() lookup in mt7925_mcu_sta_amsdu_tlv() and
pass mlink from the caller instead. The link context is already known
so the lookup is redundant.

This makes link ownership explicit and keeps the helper lookup-free.

No functional change intended.

Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Link: https://patch.msgid.link/20260306232238.2039675-2-sean.wang@kernel.org
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2026-03-24 15:49:31 +00:00
StanleyYP Wang
fc4533b5db wifi: mt76: mt7996: fix issues with manually triggered radar detection
Disallow triggering radar detection on non-DFS channels to prevent paused
TX queues from failing to resume, as a channel switch is not performed in
this case.

Signed-off-by: StanleyYP Wang <StanleyYP.Wang@mediatek.com>
Signed-off-by: Shayne Chen <shayne.chen@mediatek.com>
Link: https://patch.msgid.link/20260312095724.2117448-6-shayne.chen@mediatek.com
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2026-03-24 15:49:31 +00:00
Rex Lu
9eeea2984c wifi: mt76: mt7996: adjust timeout value for boot-up calibration commands
Align the vendor driver by adjusting the timeout values for the
MCU_UNI_CMD_EFUSE_CTRL and MCU_UNI_CMD_EXT_EEPROM_CTRL commands.
Without this adjustment, false positive command timeout errors may occur,
especially on some iPA variants.

Signed-off-by: Rex Lu <rex.lu@mediatek.com>
Signed-off-by: Shayne Chen <shayne.chen@mediatek.com>
Link: https://patch.msgid.link/20260312095724.2117448-4-shayne.chen@mediatek.com
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2026-03-24 15:49:31 +00:00
Peter Chiu
22f9abaf36 wifi: mt76: mt7996: update WFSYS reset flow for MT7990 chipsets
Skip WFSYS reset during bootup for MT7990 chipsets; only reset if L0.5
recovery is triggered.
Without this fix, the following kernel error may occur:
Internal error: synchronous external abort.

Signed-off-by: Peter Chiu <chui-hao.chiu@mediatek.com>
Signed-off-by: Shayne Chen <shayne.chen@mediatek.com>
Link: https://patch.msgid.link/20260312095724.2117448-3-shayne.chen@mediatek.com
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2026-03-24 15:49:31 +00:00
Howard Hsu
cf909557c1 wifi: mt76: mt7996: support critical packet mode for MT7990 chipsets
For MT7990 chipsets, critical packet mode must be enabled. Without this,
some higher priority packets may be placed in the wrong AC queue.

Signed-off-by: Howard Hsu <howard-yh.hsu@mediatek.com>
Signed-off-by: Shayne Chen <shayne.chen@mediatek.com>
Link: https://patch.msgid.link/20260312095724.2117448-2-shayne.chen@mediatek.com
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2026-03-24 15:49:31 +00:00
Peter Chiu
73b46379e5 wifi: mt76: mt7996: fix RRO EMU configuration
Use the correct helper to update specific bitfields instead of
overwriting the entire register.

Fixes: eedb427eb2 ("wifi: mt76: mt7996: Enable HW RRO for MT7992 chipset")
Signed-off-by: Peter Chiu <chui-hao.chiu@mediatek.com>
Signed-off-by: Shayne Chen <shayne.chen@mediatek.com>
Acked-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://patch.msgid.link/20260312095724.2117448-1-shayne.chen@mediatek.com
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2026-03-24 15:49:31 +00:00
Sean Wang
56154fef47 wifi: mt76: mt792x: fix mt7925u USB WFSYS reset handling
mt7925u uses different reset/status registers from mt7921u. Reusing the
mt7921u register set causes the WFSYS reset to fail.

Add a chip-specific descriptor in mt792xu_wfsys_reset() to select the
correct registers and fix mt7925u failing to initialize after a warm
reboot.

Fixes: d28e1a4895 ("wifi: mt76: mt792x: introduce mt792x-usb module")
Cc: stable@vger.kernel.org
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Link: https://patch.msgid.link/20260311002825.15502-2-sean.wang@kernel.org
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2026-03-24 15:49:31 +00:00
Sean Wang
e6f48512c1 wifi: mt76: mt792x: describe USB WFSYS reset with a descriptor
Prepare mt792xu_wfsys_reset() for chips that share the same USB WFSYS
reset flow but use different register definitions.

This is a pure refactor of the current mt7921u path and keeps the reset
sequence unchanged.

Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Link: https://patch.msgid.link/20260311002825.15502-1-sean.wang@kernel.org
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2026-03-24 15:49:31 +00:00
Felix Fietkau
4df75606ec wifi: mt76: add per-link beacon monitoring for MLO
With chanctx drivers using hardware scan or remain-on-channel,
mac80211 does not know when the radio goes off-channel, which breaks
its software beacon loss detection.

Implement per-link beacon monitoring in the driver. Track the last
beacon timestamp per link and check for beacon loss periodically from
the mac_work handler.

Beacon monitoring is initialized on association and on late link
activation, and cleared on disassociation. The beacon_mon_last
timestamp is reset when returning from offchannel and after channel
switches to prevent false beacon loss detection.

Link: https://patch.msgid.link/20260309060730.87840-11-nbd@nbd.name
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2026-03-24 15:49:31 +00:00
Felix Fietkau
e765bd6708 wifi: mt76: wait for firmware TX completion of mgmt frames before channel switch
After flushing software-pending frames to DMA, mt76_has_tx_pending()
only checks DMA ring q->queued. For token-based drivers, q->queued is
decremented at DMA consumption, but firmware may not have transmitted
the frame yet. Waiting for all tokens is not feasible because data
frames may be stuck in firmware powersave/aggregation queues.

Track PSD queue tokens (firmware ALTX) per phy using an atomic counter.
These frames are sent by firmware immediately without PS buffering, so
the counter reliably reaches zero after transmission.

Increment the counter in mt76_token_consume() and decrement it in
mt76_token_release(), only for PSD queue tokens. Include the counter
in mt76_has_tx_pending() so channel switch waits for firmware TX
completion of management and nullfunc frames.

mt7615 (uses mt76_token_get/put) and non-token drivers are unaffected
as they never call mt76_token_consume/release.

Link: https://patch.msgid.link/20260309060730.87840-10-nbd@nbd.name
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2026-03-24 15:49:31 +00:00
Felix Fietkau
331e766e75 wifi: mt76: route nullfunc frames to PSD/ALTX queue
ieee80211_is_data() returns true for nullfunc/QoS-nullfunc frames, so
they bypass the PSD queue routing and go through the regular VO data
queue. This means firmware processes them through the normal TID queue
instead of the ALTX queue, which doesn't guarantee immediate
transmission.

Use ieee80211_is_data_present() instead, which returns false for both
management frames and nullfunc/QoS-nullfunc (no payload), routing them
to MT_TXQ_PSD. Firmware maps PSD to the ALTX queue, which transmits
immediately without PS buffering.

This only affects frames from the mt76_tx() pending path. Regular
mac80211 TXQ scheduling is unchanged.

Link: https://patch.msgid.link/20260309060730.87840-9-nbd@nbd.name
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2026-03-24 15:49:31 +00:00
Felix Fietkau
0dcef1cbae wifi: mt76: flush pending TX before channel switch
mt76_tx() queues frames on wcid->tx_pending for async processing by
tx_worker. In __mt76_set_channel(), the worker gets disabled before it
may have run, and the subsequent wait only checks DMA ring queues, not
the software pending list. This means frames like nullfunc PS frames
from mt76_offchannel_notify() may never be transmitted on the correct
channel.

Fix this by running mt76_txq_schedule_pending() synchronously after
disabling the tx_worker but before setting MT76_RESET, which would
otherwise cause mt76_txq_schedule_pending_wcid() to bail out.

Link: https://patch.msgid.link/20260309060730.87840-8-nbd@nbd.name
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2026-03-24 15:49:31 +00:00
Felix Fietkau
381733b3a1 wifi: mt76: send nullfunc PS frames on offchannel transitions
Since mt76 uses chanctx, mac80211 does not send nullfunc power save
notifications when the driver goes offchannel for scan or ROC.
Add mt76_offchannel_notify() to send nullfunc PM=1 before going
offchannel and PM=0 after returning, so that the AP can buffer
frames during the absence.

For MLO, iterate all vif links on the phy and set
IEEE80211_TX_CTRL_MLO_LINK so that the driver's tx_prepare_skb
resolves the correct per-link wcid.

Link: https://patch.msgid.link/20260309060730.87840-7-nbd@nbd.name
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2026-03-24 15:49:31 +00:00
Felix Fietkau
f72dd74dd0 wifi: mt76: optimize ROC for same-channel case
mt76_remain_on_channel() always creates an HT20 chandef and goes
offchannel, even when the ROC channel matches the operating channel.
This unnecessarily narrows bandwidth and triggers beacon stop/restart.

When the ROC channel matches the current operating channel, preserve
the full chandef and skip the offchannel transition, matching the
optimization already present in the scan code.

Extract the shared same-channel detection into mt76_offchannel_chandef()
and use it in both ROC and scan paths.

Link: https://patch.msgid.link/20260309060730.87840-6-nbd@nbd.name
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2026-03-24 15:49:31 +00:00
Felix Fietkau
de62b24224 wifi: mt76: abort ROC on chanctx changes
mt76_change_chanctx() calls mt76_phy_update_channel() which switches
the hardware channel. If ROC is active on the same phy, this switches
away from the ROC channel and clears offchannel, but leaves ROC state
intact. Mac80211 still thinks the phy is on the ROC channel.

Abort any active ROC before proceeding, matching the pattern already
used in add, remove, assign, unassign, and switch chanctx functions.

Link: https://patch.msgid.link/20260309060730.87840-5-nbd@nbd.name
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2026-03-24 15:49:31 +00:00
Felix Fietkau
f0fb9afb74 wifi: mt76: check chanctx before restoring channel after ROC
mt76_remove_chanctx() sets phy->chanctx to NULL but does not clear
phy->main_chandef. If ROC is later performed on that phy, completion
tries to restore the stale main_chandef channel, programming the
hardware to sit on a channel with no active context.

Add a chanctx check to avoid restoring a channel when no context is
active.

Link: https://patch.msgid.link/20260309060730.87840-4-nbd@nbd.name
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2026-03-24 15:49:31 +00:00
Felix Fietkau
ec0a9b01ef wifi: mt76: add offchannel check to mt76_roc_complete
mt76_roc_complete() unconditionally calls __mt76_set_channel() to
restore the operating channel. The scan equivalent mt76_scan_complete()
checks phy->offchannel first, skipping the restore if the phy is
already back on-channel.

Without this check, ROC completion performs a redundant full hardware
channel switch when something has already moved the phy back.

Link: https://patch.msgid.link/20260309060730.87840-3-nbd@nbd.name
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2026-03-24 15:49:31 +00:00
Chad Monroe
360552c859 wifi: mt76: support upgrading passive scans to active
On channels with NO_IR or RADAR flags, wait for beacon before sending
probe requests. Allows active scanning and WPS on restricted channels
if another AP is already present.

Fixes: c56d6edebc ("wifi: mt76: mt7996: use emulated hardware scan support")
Tested-by: Piotr Kubik <piotr.kubik@adtran.com>
Signed-off-by: Chad Monroe <chad@monroe.io>
Link: https://patch.msgid.link/20251118102723.47997-2-nbd@nbd.name
Link: https://patch.msgid.link/20260309060730.87840-2-nbd@nbd.name
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2026-03-24 15:49:30 +00:00
Chad Monroe
0420180df0 wifi: mt76: fix multi-radio on-channel scanning
avoid unnecessary channel switch when performing an on-channel scan
using a multi-radio device.

Fixes: c56d6edebc ("wifi: mt76: mt7996: use emulated hardware scan support")
Signed-off-by: Chad Monroe <chad@monroe.io>
Link: https://patch.msgid.link/20251118102723.47997-1-nbd@nbd.name
Link: https://patch.msgid.link/20260309060730.87840-1-nbd@nbd.name
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2026-03-24 15:49:30 +00:00
Lorenzo Bianconi
e648051d52 wifi: mt76: mt7996: Decrement sta counter removing the link in mt7996_mac_reset_sta_iter()
Fixes tracking per-phy stations for offchannel switching.

Fixes: ace5d3b6b4 ("wifi: mt76: mt7996: improve hardware restart reliability")
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://patch.msgid.link/20260308-mt7996_mac_reset_vif_iter-fix-v1-1-57f640aa2dcf@kernel.org
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2026-03-24 15:49:30 +00:00
Lorenzo Bianconi
5806c91a3f wifi: mt76: mt7996: Remove unnecessary phy filed in mt7996_vif_link struct
Remove unnecessary phy pointer in mt7996_vif_link struct and rely on
mt7996_vif_link_phy() utility routine.

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://patch.msgid.link/20260306-mt7996-deflink-lookup-link-remove-v1-4-7162b332873c@kernel.org
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2026-03-24 15:49:30 +00:00
Lorenzo Bianconi
569ce43402 wifi: mt76: mt7996: Remove link pointer dependency in mt7996_mac_sta_remove_links()
Remove link pointer dependency in mt7996_mac_sta_remove_links routine to
get the mt7996_phy pointer since the link can be already offchannel
running mt7996_mac_sta_remove_links(). Rely on __mt7996_phy routine
instead.

Fixes: 344dd6a4c9 ("wifi: mt76: mt7996: Move num_sta accounting in mt7996_mac_sta_{add,remove}_links")
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://patch.msgid.link/20260306-mt7996-deflink-lookup-link-remove-v1-1-7162b332873c@kernel.org
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2026-03-24 15:49:30 +00:00
Lorenzo Bianconi
c0a47ffc4c wifi: mt76: mt7996: Add missing CHANCTX_STA_CSA property
Enable missing CHANCTX_STA_CSA property required for MLO.

Fixes: f5160304d5 ("wifi: mt76: mt7996: Enable MLO support for client interfaces")
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://patch.msgid.link/20250928-mt7996_chanctx_sta_csa-v1-1-82e455185990@kernel.org
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2026-03-24 15:49:30 +00:00
Quan Zhou
62e037aa8c wifi: mt76: mt7925: fix incorrect TLV length in CLC command
The previous implementation of __mt7925_mcu_set_clc() set the TLV length
field (.len) incorrectly during CLC command construction. The length was
initialized as sizeof(req) - 4, regardless of the actual segment length.
This could cause the WiFi firmware to misinterpret the command payload,
resulting in command execution errors.

This patch moves the TLV length assignment to after the segment is
selected, and sets .len to sizeof(req) + seg->len - 4, matching the
actual command content. This ensures the firmware receives the
correct TLV length and parses the command properly.

Fixes: c948b5da6b ("wifi: mt76: mt7925: add Mediatek Wi-Fi7 driver for mt7925 chips")
Cc: stable@vger.kernel.org
Signed-off-by: Quan Zhou <quan.zhou@mediatek.com>
Acked-by: Sean Wang <sean.wang@mediatek.com>
Link: https://patch.msgid.link/f56ae0e705774dfa8aab3b99e5bbdc92cd93523e.1772011204.git.quan.zhou@mediatek.com
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2026-03-24 15:49:30 +00:00
Ziyi Guo
f0168f2f9a wifi: mt76: add missing lock protection in mt76_sta_state for sta_event callback
mt76_sta_state() calls the sta_event callback without holding dev->mutex.
However, mt7915_mac_sta_event() (MT7915 implementation of this callback)
calls mt7915_mac_twt_teardown_flow() which has
lockdep_assert_held(&dev->mt76.mutex) indicating that callers must
hold this lock.

The locking pattern in mt76_sta_state() is inconsistent:
- mt76_sta_add() acquires dev->mutex before calling dev->drv->sta_add
- mt76_sta_remove() acquires dev->mutex before calling __mt76_sta_remove
- But sta_event callback is called without acquiring the lock

Add mutex_lock()/mutex_unlock() around the mt7915_mac_twt_teardown_flow
invocation to fix the missing lock protection and maintain consistency
with the existing locking pattern.

Signed-off-by: Ziyi Guo <n7l8m4@u.northwestern.edu>
Link: https://patch.msgid.link/20260131035210.2198259-1-n7l8m4@u.northwestern.edu
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2026-03-24 15:49:30 +00:00
Michael Lo
3dc0c40d78 wifi: mt76: mt7921: fix 6GHz regulatory update on connection
Call mt7921_regd_update() instead of mt7921_mcu_set_clc() when setting
the 6GHz power type after connection, so that regulatory limits and SAR
power are also applied.

Fixes: 51ba0e3a15 ("wifi: mt76: mt7921: add 6GHz power type support for clc")
Signed-off-by: Michael Lo <michael.lo@mediatek.com>
Link: https://patch.msgid.link/20260211095025.2415624-1-leon.yen@mediatek.com
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2026-03-24 15:49:30 +00:00
Ryder Lee
947d63d8cd wifi: mt76: mt7996: Disable Rx hdr_trans in monitor mode
Ensure raw frames are captured without header modification.

Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
Link: https://patch.msgid.link/04008426d6cd5de3995beefb98f9d13f35526c25.1770969275.git.ryder.lee@mediatek.com
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2026-03-24 15:49:30 +00:00
MeiChia Chiu
c9ce833d78 wifi: mt76: mt7996: Add eMLSR support
Implement set_eml_op_mode mac80211 callback in order to introduce eMLSR
support.

Tested-by: Christian Marangi <ansuelsmth@gmail.com>
Signed-off-by: MeiChia Chiu <MeiChia.Chiu@mediatek.com>
Co-developed-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://patch.msgid.link/20260203-mt7996-emlsr-v1-1-38ffb3d5110c@kernel.org
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2026-03-24 15:49:30 +00:00
Duoming Zhou
c8f62f73bb wifi: mt76: mt7996: fix use-after-free bugs in mt7996_mac_dump_work()
When the mt7996 pci chip is detaching, the mt7996_crash_data is
released in mt7996_coredump_unregister(). However, the work item
dump_work may still be running or pending, leading to UAF bugs
when the already freed crash_data is dereferenced again in
mt7996_mac_dump_work().

The race condition can occur as follows:

CPU 0 (removal path)               | CPU 1 (workqueue)
mt7996_pci_remove()                | mt7996_sys_recovery_set()
 mt7996_unregister_device()        |  mt7996_reset()
  mt7996_coredump_unregister()     |   queue_work()
   vfree(dev->coredump.crash_data) | mt7996_mac_dump_work()
                                   |  crash_data-> // UAF

Fix this by ensuring dump_work is properly canceled before
the crash_data is deallocated. Add cancel_work_sync() in
mt7996_unregister_device() to synchronize with any pending
or executing dump work.

Fixes: 878161d5d4 ("wifi: mt76: mt7996: enable coredump support")
Signed-off-by: Duoming Zhou <duoming@zju.edu.cn>
Link: https://patch.msgid.link/20260131024731.18741-1-duoming@zju.edu.cn
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2026-03-24 15:49:30 +00:00
Duoming Zhou
1146d0946b wifi: mt76: mt7915: fix use-after-free bugs in mt7915_mac_dump_work()
When the mt7915 pci chip is detaching, the mt7915_crash_data is
released in mt7915_coredump_unregister(). However, the work item
dump_work may still be running or pending, leading to UAF bugs
when the already freed crash_data is dereferenced again in
mt7915_mac_dump_work().

The race condition can occur as follows:

CPU 0 (removal path)               | CPU 1 (workqueue)
mt7915_pci_remove()                | mt7915_sys_recovery_set()
 mt7915_unregister_device()        |  mt7915_reset()
  mt7915_coredump_unregister()     |   queue_work()
   vfree(dev->coredump.crash_data) | mt7915_mac_dump_work()
                                   |  crash_data-> // UAF

Fix this by ensuring dump_work is properly canceled before
the crash_data is deallocated. Add cancel_work_sync() in
mt7915_unregister_device() to synchronize with any pending
or executing dump work.

Fixes: 4dbcb9125c ("wifi: mt76: mt7915: enable coredump support")
Signed-off-by: Duoming Zhou <duoming@zju.edu.cn>
Link: https://patch.msgid.link/20260130145759.84272-1-duoming@zju.edu.cn
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2026-03-24 15:49:30 +00:00
David Bauer
964f870e09 wifi: mt76: don't return TXQ when exceeding max non-AQL packets
mt76_txq_send_burst does check if the number of non-AQL frames exceeds
the maximum. In this case the queue is returned to ieee80211_return_txq
when iterating over the scheduled TXQs in mt76_txq_schedule_list.

This has the effect of inserting said TXQ at the head of the list. This
means the loop will get the same TXQ again, which will terminate the
scheduling round. TXQs following in the list thus never get scheduled
for transmission.

This can manifest in high latency low throughput or broken connections
for said STAs.

Check if the non-AQL packet count exceeds the limit and not return the
TXQ in this case.
Schedule all TXQs for the STA in case the non-AQL limit can be satisfied
again.

Signed-off-by: David Bauer <mail@david-bauer.net>
Link: https://patch.msgid.link/20260129232321.276575-1-mail@david-bauer.net
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2026-03-24 15:49:30 +00:00
StanleyYP Wang
1f9017d19d wifi: mt76: mt7996: fix queue pause after scan due to wrong channel switch reason
Previously, we used the IEEE80211_CONF_IDLE flag to avoid setting the
parking channel with the CH_SWITCH_NORMAL reason, which could trigger TX
emission before bootup CAC.

However, we found that this flag can be set after triggering scanning on a
connected station interface, and the reason CH_SWITCH_SCAN_BYPASS_DPD will
be used when switching back to the operating channel, which makes the
firmware failed to resume paused AC queues.

Seems that we should avoid relying on this flag after switching to single
multi-radio architecture. Instead, use the existence of chanctx as the
condition.

Signed-off-by: StanleyYP Wang <StanleyYP.Wang@mediatek.com>
Signed-off-by: Shayne Chen <shayne.chen@mediatek.com>
Link: https://patch.msgid.link/20260203155532.1098290-4-shayne.chen@mediatek.com
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2026-03-24 15:49:30 +00:00
StanleyYP Wang
169c83d3df wifi: mt76: avoid to set ACK for MCU command if wait_resp is not set
When wait_resp is not set but the ACK option is enabled in the MCU TXD,
the ACK event is enqueued to the MCU event queue without being dequeued
by the original MCU command request.

Any orphaned ACK events will only be removed from the queue when another
MCU command requests a response. Due to sequence index mismatches, these
events are discarded one by one until a matching sequence index is found.

However, if several MCU commands that do not require a response continue
to fill up the event queue, there is a risk that when an MCU command with
wait_resp enabled is issued, it may dequeue the wrong event skb,
especially if the queue contains events with all possible sequence
indices.

Signed-off-by: StanleyYP Wang <StanleyYP.Wang@mediatek.com>
Signed-off-by: Shayne Chen <shayne.chen@mediatek.com>
Link: https://patch.msgid.link/20260203155532.1098290-3-shayne.chen@mediatek.com
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2026-03-24 15:49:30 +00:00
StanleyYP Wang
efbd5bf395 wifi: mt76: mt7996: fix struct mt7996_mcu_uni_event
The cid field is defined as a two-byte value in the firmware.

Fixes: 98686cd216 ("wifi: mt76: mt7996: add driver for MediaTek Wi-Fi 7 (802.11be) devices")
Signed-off-by: StanleyYP Wang <StanleyYP.Wang@mediatek.com>
Signed-off-by: Shayne Chen <shayne.chen@mediatek.com>
Link: https://patch.msgid.link/20260203155532.1098290-2-shayne.chen@mediatek.com
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2026-03-24 15:49:30 +00:00
Shayne Chen
97b9f9831b wifi: mt76: mt7996: fix wrong DMAD length when using MAC TXP
The struct mt76_connac_fw_txp is used for HIF TXP. Change to use the
struct mt76_connac_hw_txp to fix the wrong DMAD length for MAC TXP.

Fixes: cb6ebbdffe ("wifi: mt76: mt7996: support writing MAC TXD for AddBA Request")
Signed-off-by: Shayne Chen <shayne.chen@mediatek.com>
Link: https://patch.msgid.link/20260203155532.1098290-1-shayne.chen@mediatek.com
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2026-03-24 15:49:30 +00:00
Sean Wang
02b7a65719 wifi: mt76: mt7921: add MT7902 SDIO device support
Register the MT7902 SDIO device ID in the mt7921 driver and add its
corresponding firmware and ROM patch names.

Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Link: https://patch.msgid.link/20260219004007.19733-11-sean.wang@kernel.org
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2026-03-24 15:49:30 +00:00
Sean Wang
c26319afb5 wifi: mt76: mt7921: add MT7902 PCIe device support
Register the MT7902 PCI device ID in the mt7921 driver and add its
corresponding firmware and ROM patch names.

Co-developed-by: Xiong Huang <xiong.huang@mediatek.com>
Signed-off-by: Xiong Huang <xiong.huang@mediatek.com>
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Link: https://patch.msgid.link/20260219004007.19733-10-sean.wang@kernel.org
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2026-03-24 15:49:30 +00:00
Sean Wang
199443b401 wifi: mt76: mt792x: add MT7902 WFDMA prefetch configuration
Configure the RX/TX ring prefetch setting for MT7902 PCIe device.

This is a prerequisite patch before enabling MT7902 PCIe support.

Co-developed-by: Xiong Huang <xiong.huang@mediatek.com>
Signed-off-by: Xiong Huang <xiong.huang@mediatek.com>
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Link: https://patch.msgid.link/20260219004007.19733-9-sean.wang@kernel.org
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2026-03-24 15:49:30 +00:00
Sean Wang
6d32fb2576 wifi: mt76: mt7921: add MT7902 MCU support
Add MCU support for the MT7902 chipset.

runtime pm is not yet supported by the driver, but normal mac80211
operation is unaffected.

Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Link: https://patch.msgid.link/20260219004007.19733-8-sean.wang@kernel.org
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2026-03-24 15:49:29 +00:00
Sean Wang
9eef868b86 wifi: mt76: mt792x: ensure MCU ready before ROM patch download
Restart the MCU and poll FW state to ensure correct MCU status
before downloading the ROM patch.

This is a prerequisite for enabling MT7902 PCIe and has been
validated on MT7921 and MT7925 since they share the common code path.

Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Link: https://patch.msgid.link/20260219004007.19733-7-sean.wang@kernel.org
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2026-03-24 15:49:29 +00:00
Sean Wang
14a7ba034f wifi: mt76: mt792x: add PSE handling barrier for the large MCU cmd
Add a dummy register read in mt76_connac_mcu_rate_txpower_band() to act as
a PSE barrier. This would release PSE pages and prevents buffer underflow
issues when handling MCU commands with larger payloads without the response
in mt76_connac_mcu_set_rate_txpower().

This is a prerequisite patch before enabling MT7902 PCIe and SDIO support.

Co-developed-by: Xiong Huang <xiong.huang@mediatek.com>
Signed-off-by: Xiong Huang <xiong.huang@mediatek.com>
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Link: https://patch.msgid.link/20260219004007.19733-6-sean.wang@kernel.org
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2026-03-24 15:49:29 +00:00
Sean Wang
0a7d2fca06 wifi: mt76: connac: mark MT7902 as hw txp devices
Add MT7902 to is_mt76_fw_txp() so it follows the legacy TX descriptor
path like the other connac2 chips that return false.

This is a prerequisite patch before enabling MT7902 pcie support.

Co-developed-by: Xiong Huang <xiong.huang@mediatek.com>
Signed-off-by: Xiong Huang <xiong.huang@mediatek.com>
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Link: https://patch.msgid.link/20260219004007.19733-5-sean.wang@kernel.org
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2026-03-24 15:49:29 +00:00
Sean Wang
d3bb1ca228 wifi: mt76: mt7921: add MT7902e DMA layout support
Add MT7902 PCIe specific DMA layout overrides for MCU TXQ index, RX ring
size, and MCU_WA usage. Common layout remains the default for other chips.

This is a prerequisite patch before enabling MT7902 PCIe support.

Co-developed-by: Xiong Huang <xiong.huang@mediatek.com>
Signed-off-by: Xiong Huang <xiong.huang@mediatek.com>
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Link: https://patch.msgid.link/20260219004007.19733-4-sean.wang@kernel.org
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2026-03-24 15:49:29 +00:00
Sean Wang
222606f43b wifi: mt76: mt7921: handle MT7902 irq_map quirk with mutable copy
MT7902 PCIe requires a different wm2_complete_mask value, so introduce a
mutable per-device copy of the default irq_map and override the field
only for this chip. Other devices continue using the shared const
template.

This is a prerequisite patch before enabling MT7902 PCIe support.

Co-developed-by: Xiong Huang <xiong.huang@mediatek.com>
Signed-off-by: Xiong Huang <xiong.huang@mediatek.com>
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Link: https://patch.msgid.link/20260219004007.19733-3-sean.wang@kernel.org
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2026-03-24 15:49:29 +00:00
Sean Wang
918af1f87f wifi: mt76: mt7921: use mt76_for_each_q_rx() in reset path
Replace explicit napi_disable() calls for RX queues with
mt76_for_each_q_rx() in mt7921e_mac_reset().

This removes hardcoded queue indices and disables all configured
RX queues during reset.

Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Link: https://patch.msgid.link/20260219004007.19733-2-sean.wang@kernel.org
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2026-03-24 15:49:29 +00:00
Sean Wang
5c81a4f182 wifi: mt76: connac: use is_connac2() to replace is_mt7921() checks
Unify all per-chip conditionals under the new is_connac2() helper. This
avoids confusion caused by the previous is_mt7921() check, which
implicitly covered multiple connac2 chipsets and no longer reflected its
actual scope. This is a clean-up only change with no functional impact.

Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Link: https://patch.msgid.link/20260219004007.19733-1-sean.wang@kernel.org
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2026-03-24 15:49:29 +00:00
StanleyYP Wang
fa1063fc64 wifi: mt76: mt7996: apply calibration-free data from OTP
Before sending the current EEPROM data to the firmware, read the
calibration-free data (FT data) from the efuse and merge it with
the existing EEPROM data.

Co-developed-by: Shayne Chen <shayne.chen@mediatek.com>
Signed-off-by: Shayne Chen <shayne.chen@mediatek.com>
Signed-off-by: StanleyYP Wang <StanleyYP.Wang@mediatek.com>
Link: https://patch.msgid.link/20260212090310.3335392-3-shayne.chen@mediatek.com
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2026-03-24 15:49:29 +00:00
Shayne Chen
676d5d009b wifi: mt76: mt7996: add variant for MT7992 chipsets
Introduce VAR_TYPE_24 for the MT7992 chipsets, a dual-band variant
supporting 3T3R/2SS on the 2 GHz band and 5T5R/4SS on the 5GHz band.

Signed-off-by: Shayne Chen <shayne.chen@mediatek.com>
Link: https://patch.msgid.link/20260212090310.3335392-2-shayne.chen@mediatek.com
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2026-03-24 15:49:29 +00:00
StanleyYP Wang
f456e1f56c wifi: mt76: add external EEPROM support for mt799x chipsets
For the MT7992 and MT7990 chipsets, efuse mode is not supported because
there is insufficient space in the efuse to store the calibration data.
Therefore, an additional on-chip EEPROM is added to address this
limitation.

Co-developed-by: Elwin Huang <s09289728096@gmail.com>
Signed-off-by: Elwin Huang <s09289728096@gmail.com>
Co-developed-by: Shayne Chen <shayne.chen@mediatek.com>
Signed-off-by: Shayne Chen <shayne.chen@mediatek.com>
Signed-off-by: StanleyYP Wang <StanleyYP.Wang@mediatek.com>
Link: https://patch.msgid.link/20260212090310.3335392-1-shayne.chen@mediatek.com
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2026-03-24 15:49:29 +00:00