netdev - [PATCH v2 3/3] mlxbf_gige: Enable the GigE port in mlxbf_gige

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Message-ID: <20230920172609.11929-4-asmaa@nvidia.com>
Date: Wed, 20 Sep 2023 13:26:09 -0400
From: Asmaa Mnebhi <asmaa@...dia.com>
To: <davem@...emloft.net>, <edumazet@...gle.com>, <kuba@...nel.org>,
	<pabeni@...hat.com>, <olteanv@...il.com>
CC: Asmaa Mnebhi <asmaa@...dia.com>, <netdev@...r.kernel.org>,
	<davthompson@...dia.com>
Subject: [PATCH v2 3/3] mlxbf_gige: Enable the GigE port in mlxbf_gige_open

At the moment, the GigE port is enabled in the mlxbf_gige_probe
function. If the mlxbf_gige_open is not executed, this could cause
pause frames to increase in the case where there is high backgroud
traffic. This results in clogging the port.
So move enabling the OOB port to mlxbf_gige_open.

Fixes: f92e1869d74e ("Add Mellanox BlueField Gigabit Ethernet driver")
Signed-off-by: Asmaa Mnebhi <asmaa@...dia.com>
Reviewed-by: David Thompson <davthompson@...dia.com>
---
v1->v2:
- Fix typo: "base" to "priv->base"

 .../ethernet/mellanox/mlxbf_gige/mlxbf_gige_main.c   | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlxbf_gige/mlxbf_gige_main.c b/drivers/net/ethernet/mellanox/mlxbf_gige/mlxbf_gige_main.c
index f233c2c7b6c1..f46d94256e2c 100644
--- a/drivers/net/ethernet/mellanox/mlxbf_gige/mlxbf_gige_main.c
+++ b/drivers/net/ethernet/mellanox/mlxbf_gige/mlxbf_gige_main.c
@@ -130,9 +130,15 @@ static int mlxbf_gige_open(struct net_device *netdev)
 {
 	struct mlxbf_gige *priv = netdev_priv(netdev);
 	struct phy_device *phydev = netdev->phydev;
+	u64 control;
 	u64 int_en;
 	int err;
 
+	/* Perform general init of GigE block */
+	control = readq(priv->base + MLXBF_GIGE_CONTROL);
+	control |= MLXBF_GIGE_CONTROL_PORT_EN;
+	writeq(control, priv->base + MLXBF_GIGE_CONTROL);
+
 	err = mlxbf_gige_request_irqs(priv);
 	if (err)
 		return err;
@@ -365,7 +371,6 @@ static int mlxbf_gige_probe(struct platform_device *pdev)
 	void __iomem *plu_base;
 	void __iomem *base;
 	int addr, phy_irq;
-	u64 control;
 	int err;
 
 	base = devm_platform_ioremap_resource(pdev, MLXBF_GIGE_RES_MAC);
@@ -380,11 +385,6 @@ static int mlxbf_gige_probe(struct platform_device *pdev)
 	if (IS_ERR(plu_base))
 		return PTR_ERR(plu_base);
 
-	/* Perform general init of GigE block */
-	control = readq(base + MLXBF_GIGE_CONTROL);
-	control |= MLXBF_GIGE_CONTROL_PORT_EN;
-	writeq(control, base + MLXBF_GIGE_CONTROL);
-
 	netdev = devm_alloc_etherdev(&pdev->dev, sizeof(*priv));
 	if (!netdev)
 		return -ENOMEM;
-- 
2.30.1