[PATCH net-next 1/4] net: airoha: Enable Tx drop capability for each Tx DMA ring

[Lorenzo Bianconi]

This is a preliminary patch in order to enable hw Qdisc offloading.

Signed-off-by: Lorenzo Bianconi <lorenzo at kernel.org>
---
 drivers/net/ethernet/mediatek/airoha_eth.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/net/ethernet/mediatek/airoha_eth.c b/drivers/net/ethernet/mediatek/airoha_eth.c
index d8bfc21a5b194478e18201ee3beca7494c223e24..59e889cf08e49b89d20fa630f83a1c1322bae6b4 100644
--- a/drivers/net/ethernet/mediatek/airoha_eth.c
+++ b/drivers/net/ethernet/mediatek/airoha_eth.c
@@ -1789,6 +1789,10 @@ static int airoha_qdma_init_tx_queue(struct airoha_queue *q,
 		WRITE_ONCE(q->desc[i].ctrl, cpu_to_le32(val));
 	}
 
+	/* xmit ring drop default setting */
+	airoha_qdma_set(qdma, REG_TX_RING_BLOCKING(qid),
+			TX_RING_IRQ_BLOCKING_TX_DROP_EN_MASK);
+
 	airoha_qdma_wr(qdma, REG_TX_RING_BASE(qid), dma_addr);
 	airoha_qdma_rmw(qdma, REG_TX_CPU_IDX(qid), TX_RING_CPU_IDX_MASK,
 			FIELD_PREP(TX_RING_CPU_IDX_MASK, q->head));

-- 
2.47.1