[RFC mt76 v2 0/4] Add NPU offload support to MT7996 driver

[Lorenzo Bianconi <lorenzo@kernel.org>]

Introduce Airoha NPU support to MT7996 driver. NPU is used to enable
traffic forward offloading between the MT76 NIC and Airoha ethernet one
available on the Airoha EN7581 SoC using Netfilter Flowtable APIs.
This series is based on the following net-next series for airoha_npu driver:
https://lore.kernel.org/netdev/20250717-airoha-en7581-wlan-offlaod-v4-0-6db178391ed2@kernel.org/

Changes in RFCv2:
- Do not compile MT76 NPU codebase if NPU support is disabled in airoha-eth
  driver.
- Remove dev_warn() in mt7996_pci_probe() if NPU support is disabled.

Lorenzo Bianconi (4):
  wifi: mt76: Move Q_READ/Q_WRITE definitions in dma.h
  wifi: mt76: Add mt76_dev pointer in mt76_queue struct.
  wifi: mt76: Introduce the NPU generic layer
  wifi: mt76: mt7996: Add NPU offload support to MT7996 driver

 drivers/net/wireless/mediatek/mt76/Makefile   |   1 +
 drivers/net/wireless/mediatek/mt76/dma.c      |  71 ++--
 drivers/net/wireless/mediatek/mt76/dma.h      |  67 ++++
 drivers/net/wireless/mediatek/mt76/mac80211.c |   6 +-
 drivers/net/wireless/mediatek/mt76/mt76.h     |  91 +++++
 .../wireless/mediatek/mt76/mt7996/Makefile    |   1 +
 .../net/wireless/mediatek/mt76/mt7996/dma.c   |   9 +-
 .../net/wireless/mediatek/mt76/mt7996/init.c  |   4 +
 .../net/wireless/mediatek/mt76/mt7996/mac.c   |   3 +
 .../net/wireless/mediatek/mt76/mt7996/main.c  |  15 +-
 .../net/wireless/mediatek/mt76/mt7996/mmio.c  |  13 +-
 .../wireless/mediatek/mt76/mt7996/mt7996.h    |  21 +
 .../net/wireless/mediatek/mt76/mt7996/npu.c   | 284 +++++++++++++
 .../net/wireless/mediatek/mt76/mt7996/pci.c   |   3 +
 drivers/net/wireless/mediatek/mt76/npu.c      | 378 ++++++++++++++++++
 15 files changed, 921 insertions(+), 46 deletions(-)
 create mode 100644 drivers/net/wireless/mediatek/mt76/mt7996/npu.c
 create mode 100644 drivers/net/wireless/mediatek/mt76/npu.c

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2.50.1