netdev - [net-next PATCH 08/11] octeontx2-pf: Initialize new NIX SQ context for cn20k

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Message-ID: <1752420669-2908-9-git-send-email-sbhatta@marvell.com>
Date: Sun, 13 Jul 2025 21:01:06 +0530
From: Subbaraya Sundeep <sbhatta@...vell.com>
To: <andrew+netdev@...n.ch>, <davem@...emloft.net>, <edumazet@...gle.com>,
        <kuba@...nel.org>, <pabeni@...hat.com>, <horms@...nel.org>
CC: <gakula@...vell.com>, <hkelam@...vell.com>, <bbhushan2@...vell.com>,
        <jerinj@...vell.com>, <lcherian@...vell.com>, <sgoutham@...vell.com>,
        <netdev@...r.kernel.org>, Subbaraya Sundeep <sbhatta@...vell.com>
Subject: [net-next PATCH 08/11] octeontx2-pf: Initialize new NIX SQ context for cn20k

cn20k has different NIX context for send queue hence use
the new cn20k mailbox to init SQ context.

Signed-off-by: Subbaraya Sundeep <sbhatta@...vell.com>
---
 .../ethernet/marvell/octeontx2/nic/cn20k.c    | 36 ++++++++++++++++++-
 1 file changed, 35 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/cn20k.c b/drivers/net/ethernet/marvell/octeontx2/nic/cn20k.c
index 037548f36940..4f0afa5301b4 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/cn20k.c
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/cn20k.c
@@ -389,11 +389,45 @@ static int cn20k_pool_aq_init(struct otx2_nic *pfvf, u16 pool_id,
 	return 0;
 }
 
+static int cn20k_sq_aq_init(void *dev, u16 qidx, u8 chan_offset, u16 sqb_aura)
+{
+	struct nix_cn20k_aq_enq_req *aq;
+	struct otx2_nic *pfvf = dev;
+
+	/* Get memory to put this msg */
+	aq = otx2_mbox_alloc_msg_nix_cn20k_aq_enq(&pfvf->mbox);
+	if (!aq)
+		return -ENOMEM;
+
+	aq->sq.cq = pfvf->hw.rx_queues + qidx;
+	aq->sq.max_sqe_size = NIX_MAXSQESZ_W16; /* 128 byte */
+	aq->sq.cq_ena = 1;
+	aq->sq.ena = 1;
+	aq->sq.smq = otx2_get_smq_idx(pfvf, qidx);
+	aq->sq.smq_rr_weight = mtu_to_dwrr_weight(pfvf, pfvf->tx_max_pktlen);
+	aq->sq.default_chan = pfvf->hw.tx_chan_base + chan_offset;
+	aq->sq.sqe_stype = NIX_STYPE_STF; /* Cache SQB */
+	aq->sq.sqb_aura = sqb_aura;
+	aq->sq.sq_int_ena = NIX_SQINT_BITS;
+	aq->sq.qint_idx = 0;
+	/* Due pipelining impact minimum 2000 unused SQ CQE's
+	 * need to maintain to avoid CQ overflow.
+	 */
+	aq->sq.cq_limit = ((SEND_CQ_SKID * 256) / (pfvf->qset.sqe_cnt));
+
+	/* Fill AQ info */
+	aq->qidx = qidx;
+	aq->ctype = NIX_AQ_CTYPE_SQ;
+	aq->op = NIX_AQ_INSTOP_INIT;
+
+	return otx2_sync_mbox_msg(&pfvf->mbox);
+}
+
 static struct dev_hw_ops cn20k_hw_ops = {
 	.pfaf_mbox_intr_handler = cn20k_pfaf_mbox_intr_handler,
 	.vfaf_mbox_intr_handler = cn20k_vfaf_mbox_intr_handler,
 	.pfvf_mbox_intr_handler = cn20k_pfvf_mbox_intr_handler,
-	.sq_aq_init = cn10k_sq_aq_init,
+	.sq_aq_init = cn20k_sq_aq_init,
 	.sqe_flush = cn10k_sqe_flush,
 	.aura_freeptr = cn10k_aura_freeptr,
 	.refill_pool_ptrs = cn10k_refill_pool_ptrs,
-- 
2.34.1