netdev - [PATCH net-next 07/10] bnxt_en: Pass NQ ID to the FW when allocating RX/RX AGG rings

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Message-ID: <20250113063927.4017173-8-michael.chan@broadcom.com>
Date: Sun, 12 Jan 2025 22:39:24 -0800
From: Michael Chan <michael.chan@...adcom.com>
To: davem@...emloft.net
Cc: netdev@...r.kernel.org,
	edumazet@...gle.com,
	kuba@...nel.org,
	pabeni@...hat.com,
	andrew+netdev@...n.ch,
	pavan.chebbi@...adcom.com,
	andrew.gospodarek@...adcom.com,
	somnath.kotur@...adcom.com,
	Hongguang Gao <hongguang.gao@...adcom.com>,
	Ajit Khaparde <ajit.khaparde@...adcom.com>
Subject: [PATCH net-next 07/10] bnxt_en: Pass NQ ID to the FW when allocating RX/RX AGG rings

Newer firmware can use the NQ ring ID associated with each RX/RX AGG
ring to enable PCIe Steering Tags on P5_PLUS chips.  When allocating
RX/RX AGG rings, pass along NQ ring ID for the firmware to use.  This
information helps optimize DMA writes by directing them to the cache
closer to the CPU consuming the data, potentially improving the
processing speed.  This change is backward-compatible with older
firmware, which will simply disregard the information.

Reviewed-by: Hongguang Gao <hongguang.gao@...adcom.com>
Reviewed-by: Ajit Khaparde <ajit.khaparde@...adcom.com>
Signed-off-by: Andy Gospodarek <andrew.gospodarek@...adcom.com>
Signed-off-by: Michael Chan <michael.chan@...adcom.com>
---
 drivers/net/ethernet/broadcom/bnxt/bnxt.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index c862250d3b77..30a57bbc407c 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -6922,7 +6922,8 @@ static void bnxt_set_rx_ring_params_p5(struct bnxt *bp, u32 ring_type,
 				       struct bnxt_ring_struct *ring)
 {
 	struct bnxt_ring_grp_info *grp_info = &bp->grp_info[ring->grp_idx];
-	u32 enables = RING_ALLOC_REQ_ENABLES_RX_BUF_SIZE_VALID;
+	u32 enables = RING_ALLOC_REQ_ENABLES_RX_BUF_SIZE_VALID |
+		      RING_ALLOC_REQ_ENABLES_NQ_RING_ID_VALID;
 
 	if (ring_type == HWRM_RING_ALLOC_AGG) {
 		req->ring_type = RING_ALLOC_REQ_RING_TYPE_RX_AGG;
@@ -6936,6 +6937,7 @@ static void bnxt_set_rx_ring_params_p5(struct bnxt *bp, u32 ring_type,
 				cpu_to_le16(RING_ALLOC_REQ_FLAGS_RX_SOP_PAD);
 	}
 	req->stat_ctx_id = cpu_to_le32(grp_info->fw_stats_ctx);
+	req->nq_ring_id = cpu_to_le16(grp_info->cp_fw_ring_id);
 	req->enables |= cpu_to_le32(enables);
 }
 
-- 
2.30.1