[PATCH net-next v2 0/2] net: airoha: Init Block Ack memory region for MT7996 NPU offloading

[PATCH net-next v2 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.

---
Changes in v2:
- Remork memory-region entry in airoha,en7581-npu.yaml
- Link to v1: https://lore.kernel.org/r/20260105-airoha-ba-memory-region-v1-0-5b07a737c7a7@kernel.org

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

 .../devicetree/bindings/net/airoha,en7581-npu.yaml   | 20 ++++++++++----------
 drivers/net/ethernet/airoha/airoha_npu.c             |  8 ++++++++
 2 files changed, 18 insertions(+), 10 deletions(-)
---
base-commit: 8e7148b5602321be48614bcde048cbe1c738ce3e
change-id: 20260102-airoha-ba-memory-region-58d924371382

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

[PATCH net-next v2 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>
---
 .../devicetree/bindings/net/airoha,en7581-npu.yaml   | 20 ++++++++++----------
 1 file changed, 10 insertions(+), 10 deletions(-)

diff --git a/Documentation/devicetree/bindings/net/airoha,en7581-npu.yaml b/Documentation/devicetree/bindings/net/airoha,en7581-npu.yaml
index 59c57f58116b568092446e6cfb7b6bd3f4f47b82..42bc0f2a42a91236c858241ca76aa0b0ddac8d54 100644
--- a/Documentation/devicetree/bindings/net/airoha,en7581-npu.yaml
+++ b/Documentation/devicetree/bindings/net/airoha,en7581-npu.yaml
@@ -42,14 +42,13 @@ properties:
       - description: wlan irq line5
 
   memory-region:
-    oneOf:
-      - items:
-          - description: NPU firmware binary 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
+    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
+    minItems: 1
 
   memory-region-names:
     items:
@@ -57,6 +56,7 @@ properties:
       - const: pkt
       - const: tx-pkt
       - const: tx-bufid
+      - const: ba
 
 required:
   - compatible
@@ -93,7 +93,7 @@ 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 v2 1/2] dt-bindings: net: airoha: npu: Add BA memory region

[Krzysztof Kozlowski]

On Wed, Jan 07, 2026 at 09:29:34AM +0100, Lorenzo Bianconi wrote:
> Introduce Block Ack memory region used by NPU MT7996 (Eagle) offloading.
> 
> Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
> ---
>  .../devicetree/bindings/net/airoha,en7581-npu.yaml   | 20 ++++++++++----------
>  1 file changed, 10 insertions(+), 10 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/net/airoha,en7581-npu.yaml b/Documentation/devicetree/bindings/net/airoha,en7581-npu.yaml
> index 59c57f58116b568092446e6cfb7b6bd3f4f47b82..42bc0f2a42a91236c858241ca76aa0b0ddac8d54 100644
> --- a/Documentation/devicetree/bindings/net/airoha,en7581-npu.yaml
> +++ b/Documentation/devicetree/bindings/net/airoha,en7581-npu.yaml
> @@ -42,14 +42,13 @@ properties:
>        - description: wlan irq line5
>  
>    memory-region:
> -    oneOf:
> -      - items:
> -          - description: NPU firmware binary 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
> +    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
> +    minItems: 1
>  
>    memory-region-names:

missing minItems here.

Best regards,
Krzysztof

Re: [PATCH net-next v2 1/2] dt-bindings: net: airoha: npu: Add BA memory region

[Lorenzo Bianconi]

[-- Attachment #1: Type: text/plain, Size: 1748 bytes --]

> On Wed, Jan 07, 2026 at 09:29:34AM +0100, Lorenzo Bianconi wrote:
> > Introduce Block Ack memory region used by NPU MT7996 (Eagle) offloading.
> > 
> > Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
> > ---
> >  .../devicetree/bindings/net/airoha,en7581-npu.yaml   | 20 ++++++++++----------
> >  1 file changed, 10 insertions(+), 10 deletions(-)
> > 
> > diff --git a/Documentation/devicetree/bindings/net/airoha,en7581-npu.yaml b/Documentation/devicetree/bindings/net/airoha,en7581-npu.yaml
> > index 59c57f58116b568092446e6cfb7b6bd3f4f47b82..42bc0f2a42a91236c858241ca76aa0b0ddac8d54 100644
> > --- a/Documentation/devicetree/bindings/net/airoha,en7581-npu.yaml
> > +++ b/Documentation/devicetree/bindings/net/airoha,en7581-npu.yaml
> > @@ -42,14 +42,13 @@ properties:
> >        - description: wlan irq line5
> >  
> >    memory-region:
> > -    oneOf:
> > -      - items:
> > -          - description: NPU firmware binary 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
> > +    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
> > +    minItems: 1
> >  
> >    memory-region-names:
> 
> missing minItems here.

ack, I will fix it.

Regards,
Lorenzo

> 
> Best regards,
> Krzysztof
> 

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[PATCH net-next v2 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 22f72c146065998d5450477f664ed308b1569aa3..a56b3780bb627cc393b94210b6b5c72cc95baea3 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