[PATCH net-next 0/2] net: airoha: Init Block Ack memory region for MT7996 NPU offloading

[PATCH net-next 0/2] net: airoha: Init Block Ack memory region for MT7996 NPU offloading

[Lorenzo Bianconi]

This is a preliminary series in order to enable NPU offloading for
MT7996 (Eagle) chipset.

---
Lorenzo Bianconi (2):
      dt-bindings: net: airoha: npu: Add BA memory region
      net: airoha: npu: Init BA memory region if provided via DTS

 Documentation/devicetree/bindings/net/airoha,en7581-npu.yaml | 11 +++++++++--
 drivers/net/ethernet/airoha/airoha_npu.c                     |  8 ++++++++
 2 files changed, 17 insertions(+), 2 deletions(-)
---
base-commit: dbf8fe85a16a33d6b6bd01f2bc606fc017771465
change-id: 20260102-airoha-ba-memory-region-58d924371382

Best regards,
-- 
Lorenzo Bianconi <lorenzo@kernel.org>

[PATCH net-next 1/2] dt-bindings: net: airoha: npu: Add BA memory region

[Lorenzo Bianconi]

Introduce Block Ack memory region used by NPU MT7996 (Eagle) offloading.

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
---
 Documentation/devicetree/bindings/net/airoha,en7581-npu.yaml | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/net/airoha,en7581-npu.yaml b/Documentation/devicetree/bindings/net/airoha,en7581-npu.yaml
index 59c57f58116b568092446e6cfb7b6bd3f4f47b82..b3a2b36f6a121f90acf88a07b0f1733fa6da08a8 100644
--- a/Documentation/devicetree/bindings/net/airoha,en7581-npu.yaml
+++ b/Documentation/devicetree/bindings/net/airoha,en7581-npu.yaml
@@ -50,6 +50,12 @@ properties:
           - description: NPU wlan offload RX buffers region
           - description: NPU wlan offload TX buffers region
           - description: NPU wlan offload TX packet identifiers region
+      - items:
+          - description: NPU firmware binary region
+          - description: NPU wlan offload RX buffers region
+          - description: NPU wlan offload TX buffers region
+          - description: NPU wlan offload TX packet identifiers region
+          - description: NPU wlan Block Ack buffers region
 
   memory-region-names:
     items:
@@ -57,6 +63,7 @@ properties:
       - const: pkt
       - const: tx-pkt
       - const: tx-bufid
+      - const: ba
 
 required:
   - compatible
@@ -93,7 +100,7 @@ examples:
                      <GIC_SPI 122 IRQ_TYPE_LEVEL_HIGH>,
                      <GIC_SPI 123 IRQ_TYPE_LEVEL_HIGH>;
         memory-region = <&npu_firmware>, <&npu_pkt>, <&npu_txpkt>,
-                        <&npu_txbufid>;
-        memory-region-names = "firmware", "pkt", "tx-pkt", "tx-bufid";
+                        <&npu_txbufid>, <&npu_ba>;
+        memory-region-names = "firmware", "pkt", "tx-pkt", "tx-bufid", "ba";
       };
     };

-- 
2.52.0

Re: [PATCH net-next 1/2] dt-bindings: net: airoha: npu: Add BA memory region

[Rob Herring]

On Mon, Jan 05, 2026 at 10:02:56AM +0100, Lorenzo Bianconi wrote:
> Introduce Block Ack memory region used by NPU MT7996 (Eagle) offloading.
> 
> Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
> ---
>  Documentation/devicetree/bindings/net/airoha,en7581-npu.yaml | 11 +++++++++--
>  1 file changed, 9 insertions(+), 2 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/net/airoha,en7581-npu.yaml b/Documentation/devicetree/bindings/net/airoha,en7581-npu.yaml
> index 59c57f58116b568092446e6cfb7b6bd3f4f47b82..b3a2b36f6a121f90acf88a07b0f1733fa6da08a8 100644
> --- a/Documentation/devicetree/bindings/net/airoha,en7581-npu.yaml
> +++ b/Documentation/devicetree/bindings/net/airoha,en7581-npu.yaml
> @@ -50,6 +50,12 @@ properties:
>            - description: NPU wlan offload RX buffers region
>            - description: NPU wlan offload TX buffers region
>            - description: NPU wlan offload TX packet identifiers region
> +      - items:
> +          - description: NPU firmware binary region
> +          - description: NPU wlan offload RX buffers region
> +          - description: NPU wlan offload TX buffers region
> +          - description: NPU wlan offload TX packet identifiers region
> +          - description: NPU wlan Block Ack buffers region

This oneOf can be simplified to just this last entry plus 'minItems: 1'. 
Sure that allows 2 or 3 entries, but nothing defines when 1, 4, or 5 
entries is valid or not.

>  
>    memory-region-names:
>      items:
> @@ -57,6 +63,7 @@ properties:
>        - const: pkt
>        - const: tx-pkt
>        - const: tx-bufid
> +      - const: ba
>  
>  required:
>    - compatible
> @@ -93,7 +100,7 @@ examples:
>                       <GIC_SPI 122 IRQ_TYPE_LEVEL_HIGH>,
>                       <GIC_SPI 123 IRQ_TYPE_LEVEL_HIGH>;
>          memory-region = <&npu_firmware>, <&npu_pkt>, <&npu_txpkt>,
> -                        <&npu_txbufid>;
> -        memory-region-names = "firmware", "pkt", "tx-pkt", "tx-bufid";
> +                        <&npu_txbufid>, <&npu_ba>;
> +        memory-region-names = "firmware", "pkt", "tx-pkt", "tx-bufid", "ba";
>        };
>      };
> 
> -- 
> 2.52.0
> 

[PATCH net-next 2/2] net: airoha: npu: Init BA memory region if provided via DTS

[Lorenzo Bianconi]

Initialize NPU Block Ack memory region if reserved via DTS.
Block Ack memory region is used by NPU MT7996 (Eagle) offloading.

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
---
 drivers/net/ethernet/airoha/airoha_npu.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/net/ethernet/airoha/airoha_npu.c b/drivers/net/ethernet/airoha/airoha_npu.c
index 68b7f9684dc7f3912493876ae937207f55b81330..00faca2a388aa4378b58560c14d8eec0cb6b0330 100644
--- a/drivers/net/ethernet/airoha/airoha_npu.c
+++ b/drivers/net/ethernet/airoha/airoha_npu.c
@@ -519,6 +519,14 @@ static int airoha_npu_wlan_init_memory(struct airoha_npu *npu)
 	if (err)
 		return err;
 
+	if (of_property_match_string(npu->dev->of_node, "memory-region-names",
+				     "ba") >= 0) {
+		cmd = WLAN_FUNC_SET_WAIT_DRAM_BA_NODE_ADDR;
+		err = airoha_npu_wlan_set_reserved_memory(npu, 0, "ba", cmd);
+		if (err)
+			return err;
+	}
+
 	cmd = WLAN_FUNC_SET_WAIT_IS_FORCE_TO_CPU;
 	return airoha_npu_wlan_msg_send(npu, 0, cmd, &val, sizeof(val),
 					GFP_KERNEL);

-- 
2.52.0