netdev - [PATCH net-next 2/5] net: stmmac: move and rename dwmac_pcs

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Message-Id: <E1vevHm-00000002YoS-23RX@rmk-PC.armlinux.org.uk>
Date: Sun, 11 Jan 2026 13:15:14 +0000
From: "Russell King (Oracle)" <rmk+kernel@...linux.org.uk>
To: Andrew Lunn <andrew@...n.ch>,
	Heiner Kallweit <hkallweit1@...il.com>
Cc: Alexandre Torgue <alexandre.torgue@...s.st.com>,
	Andrew Lunn <andrew+netdev@...n.ch>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	linux-arm-kernel@...ts.infradead.org,
	linux-stm32@...md-mailman.stormreply.com,
	Maxime Coquelin <mcoquelin.stm32@...il.com>,
	netdev@...r.kernel.org,
	Paolo Abeni <pabeni@...hat.com>
Subject: [PATCH net-next 2/5] net: stmmac: move and rename dwmac_pcs_isr()

dwmac_pcs_isr() doesn't need to be inlined into the MAC's
host_irq_status method, as handling PCS interrupts isn't performance
critical. However, there is little point calling this function unless
an interrupt is pending for the PCS.

Rename it to stmmac_integrated_pcs_irq() while moving it.

Signed-off-by: Russell King (Oracle) <rmk+kernel@...linux.org.uk>
---
 .../ethernet/stmicro/stmmac/dwmac1000_core.c  |  4 ++-
 .../net/ethernet/stmicro/stmmac/dwmac4_core.c |  4 ++-
 .../net/ethernet/stmicro/stmmac/stmmac_pcs.c  | 30 +++++++++++++++++
 .../net/ethernet/stmicro/stmmac/stmmac_pcs.h  | 33 ++-----------------
 4 files changed, 39 insertions(+), 32 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c b/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c
index a2ae136d2c0e..9cc8f38e7e45 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c
@@ -304,7 +304,9 @@ static int dwmac1000_irq_status(struct mac_device_info *hw,
 			x->irq_rx_path_exit_lpi_mode_n++;
 	}
 
-	dwmac_pcs_isr(ioaddr, GMAC_PCS_BASE, intr_status, x);
+	if (intr_status & (PCS_ANE_IRQ | PCS_LINK_IRQ))
+		stmmac_integrated_pcs_irq(ioaddr, GMAC_PCS_BASE, intr_status,
+					  x);
 
 	return ret;
 }
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c b/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c
index a4282fd7c3c7..2a531c3c2e14 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c
@@ -658,7 +658,9 @@ static int dwmac4_irq_status(struct mac_device_info *hw,
 			x->irq_rx_path_exit_lpi_mode_n++;
 	}
 
-	dwmac_pcs_isr(ioaddr, GMAC_PCS_BASE, intr_status, x);
+	if (intr_status & (PCS_ANE_IRQ | PCS_LINK_IRQ))
+		stmmac_integrated_pcs_irq(ioaddr, GMAC_PCS_BASE, intr_status,
+					  x);
 
 	return ret;
 }
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_pcs.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_pcs.c
index e2f531c11986..90cdff30520b 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_pcs.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_pcs.c
@@ -45,6 +45,36 @@ static const struct phylink_pcs_ops dwmac_integrated_pcs_ops = {
 	.pcs_config = dwmac_integrated_pcs_config,
 };
 
+/**
+ * stmmac_integrated_pcs_irq - TBI, RTBI, or SGMII PHY ISR
+ * @ioaddr: IO registers pointer
+ * @reg: Base address of the AN Control Register.
+ * @intr_status: GMAC core interrupt status
+ * @x: pointer to log these events as stats
+ * Description: it is the ISR for PCS events: Auto-Negotiation Completed and
+ * Link status.
+ */
+void stmmac_integrated_pcs_irq(void __iomem *ioaddr, u32 reg,
+			       unsigned int intr_status,
+			       struct stmmac_extra_stats *x)
+{
+	u32 val = readl(ioaddr + GMAC_AN_STATUS(reg));
+
+	if (intr_status & PCS_ANE_IRQ) {
+		x->irq_pcs_ane_n++;
+		if (val & GMAC_AN_STATUS_ANC)
+			pr_info("stmmac_pcs: ANE process completed\n");
+	}
+
+	if (intr_status & PCS_LINK_IRQ) {
+		x->irq_pcs_link_n++;
+		if (val & GMAC_AN_STATUS_LS)
+			pr_info("stmmac_pcs: Link Up\n");
+		else
+			pr_info("stmmac_pcs: Link Down\n");
+	}
+}
+
 int stmmac_integrated_pcs_init(struct stmmac_priv *priv, unsigned int offset,
 			       u32 int_mask)
 {
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_pcs.h b/drivers/net/ethernet/stmicro/stmmac/stmmac_pcs.h
index fd2e2d7d5bd4..bfc3d665265c 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_pcs.h
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_pcs.h
@@ -62,39 +62,12 @@ phylink_pcs_to_stmmac_pcs(struct phylink_pcs *pcs)
 	return container_of(pcs, struct stmmac_pcs, pcs);
 }
 
+void stmmac_integrated_pcs_irq(void __iomem *ioaddr, u32 reg,
+			       unsigned int intr_status,
+			       struct stmmac_extra_stats *x);
 int stmmac_integrated_pcs_init(struct stmmac_priv *priv, unsigned int offset,
 			       u32 int_mask);
 
-/**
- * dwmac_pcs_isr - TBI, RTBI, or SGMII PHY ISR
- * @ioaddr: IO registers pointer
- * @reg: Base address of the AN Control Register.
- * @intr_status: GMAC core interrupt status
- * @x: pointer to log these events as stats
- * Description: it is the ISR for PCS events: Auto-Negotiation Completed and
- * Link status.
- */
-static inline void dwmac_pcs_isr(void __iomem *ioaddr, u32 reg,
-				 unsigned int intr_status,
-				 struct stmmac_extra_stats *x)
-{
-	u32 val = readl(ioaddr + GMAC_AN_STATUS(reg));
-
-	if (intr_status & PCS_ANE_IRQ) {
-		x->irq_pcs_ane_n++;
-		if (val & GMAC_AN_STATUS_ANC)
-			pr_info("stmmac_pcs: ANE process completed\n");
-	}
-
-	if (intr_status & PCS_LINK_IRQ) {
-		x->irq_pcs_link_n++;
-		if (val & GMAC_AN_STATUS_LS)
-			pr_info("stmmac_pcs: Link Up\n");
-		else
-			pr_info("stmmac_pcs: Link Down\n");
-	}
-}
-
 /**
  * dwmac_ctrl_ane - To program the AN Control Register.
  * @ioaddr: IO registers pointer
-- 
2.47.3