netdev - [PATCH RFC net-next v2 4/8] net: stmmac: dwmac1000: move PCS interrupt control

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Date: Fri, 31 May 2024 12:26:30 +0100
From: "Russell King (Oracle)" <rmk+kernel@...linux.org.uk>
To: Serge Semin <fancer.lancer@...il.com>
Cc: Andrew Halaney <ahalaney@...hat.com>,
	Alexandre Torgue <alexandre.torgue@...s.st.com>,
	Jose Abreu <joabreu@...opsys.com>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>,
	Maxime Coquelin <mcoquelin.stm32@...il.com>,
	netdev@...r.kernel.org,
	linux-stm32@...md-mailman.stormreply.com,
	linux-arm-kernel@...ts.infradead.org
Subject: [PATCH RFC net-next v2 4/8] net: stmmac: dwmac1000: move PCS
 interrupt control

Control the PCS interrupt mask from phylink's pcs_enable() and
pcs_disable() methods rather than relying on driver variables.

This assumes that GMAC_INT_DISABLE_RGMII, GMAC_INT_DISABLE_PCSLINK
and GMAC_INT_DISABLE_PCSAN are all relevant to the PCS.

Signed-off-by: Russell King (Oracle) <rmk+kernel@...linux.org.uk>
---
 .../ethernet/stmicro/stmmac/dwmac1000_core.c  | 33 +++++++++++++++----
 1 file changed, 27 insertions(+), 6 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c b/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c
index 4a0572d5f865..3ba65ea3e46f 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c
@@ -56,12 +56,7 @@ static void dwmac1000_core_init(struct mac_device_info *hw,
 	writel(value, ioaddr + GMAC_CONTROL);
 
 	/* Mask GMAC interrupts */
-	value = GMAC_INT_DEFAULT_MASK;
-
-	if (hw->pcs)
-		value &= ~GMAC_INT_DISABLE_PCS;
-
-	writel(value, ioaddr + GMAC_INT_MASK);
+	writel(GMAC_INT_DEFAULT_MASK, ioaddr + GMAC_INT_MASK);
 
 #ifdef STMMAC_VLAN_TAG_USED
 	/* Tag detection without filtering */
@@ -387,6 +382,30 @@ static int dwmac1000_mii_pcs_validate(struct phylink_pcs *pcs,
 	return 0;
 }
 
+static int dwmac1000_mii_pcs_enable(struct phylink_pcs *pcs)
+{
+	struct mac_device_info *hw = phylink_pcs_to_mac_dev_info(pcs);
+	void __iomem *ioaddr = hw->pcsr;
+	u32 intr_mask;
+
+	intr_mask = readl(ioaddr + GMAC_INT_MASK);
+	intr_mask &= ~GMAC_INT_DISABLE_PCS;
+	writel(intr_mask, ioaddr + GMAC_INT_MASK);
+
+	return 0;
+}
+
+static void dwmac1000_mii_pcs_disable(struct phylink_pcs *pcs)
+{
+	struct mac_device_info *hw = phylink_pcs_to_mac_dev_info(pcs);
+	void __iomem *ioaddr = hw->pcsr;
+	u32 intr_mask;
+
+	intr_mask = readl(ioaddr + GMAC_INT_MASK);
+	intr_mask |= GMAC_INT_DISABLE_PCS;
+	writel(intr_mask, ioaddr + GMAC_INT_MASK);
+}
+
 static int dwmac1000_mii_pcs_config(struct phylink_pcs *pcs,
 				    unsigned int neg_mode,
 				    phy_interface_t interface,
@@ -428,6 +447,8 @@ static void dwmac1000_mii_pcs_get_state(struct phylink_pcs *pcs,
 
 static const struct phylink_pcs_ops dwmac1000_mii_pcs_ops = {
 	.pcs_validate = dwmac1000_mii_pcs_validate,
+	.pcs_enable = dwmac1000_mii_pcs_enable,
+	.pcs_disable = dwmac1000_mii_pcs_disable,
 	.pcs_config = dwmac1000_mii_pcs_config,
 	.pcs_get_state = dwmac1000_mii_pcs_get_state,
 };
-- 
2.30.2