From 5f795590380476f1c9b7ed0ac945c9b0269dc23a Mon Sep 17 00:00:00 2001 From: Lorenzo Bianconi Date: Fri, 3 Jan 2025 13:17:02 +0100 Subject: [PATCH 1/4] net: airoha: Enable Tx drop capability for each Tx DMA ring This is a preliminary patch in order to enable hw Qdisc offloading. Signed-off-by: Lorenzo Bianconi Signed-off-by: Paolo Abeni --- drivers/net/ethernet/mediatek/airoha_eth.c | 4 ++++ 1 file changed, 4 insertions(+) --- a/drivers/net/ethernet/mediatek/airoha_eth.c +++ b/drivers/net/ethernet/mediatek/airoha_eth.c @@ -1790,6 +1790,10 @@ static int airoha_qdma_init_tx_queue(str 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));