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68 lines
2.1 KiB
Diff
68 lines
2.1 KiB
Diff
From 853e80369cfceb2331bf34f251ba11c6602cc67f Mon Sep 17 00:00:00 2001
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From: Heiner Kallweit <hkallweit1@gmail.com>
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Date: Thu, 13 Feb 2025 20:15:42 +0100
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Subject: [PATCH] r8169: add PHY c45 ops for MDIO_MMD_VENDOR2 registers
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The integrated PHYs on chip versions from RTL8168g allow to address
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MDIO_MMD_VEND2 registers. All c22 standard registers are mapped to
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MDIO_MMD_VEND2 registers. So far the paging mechanism is used to
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address PHY registers. Add support for c45 ops to address MDIO_MMD_VEND2
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registers directly, w/o the paging.
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Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
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Reviewed-by: Andrew Lunn <andrew@lunn.ch>
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Link: https://patch.msgid.link/d6f97eaa-0f13-468f-89cb-75a41087bc4a@gmail.com
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Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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---
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drivers/net/ethernet/realtek/r8169_main.c | 32 +++++++++++++++++++++++
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1 file changed, 32 insertions(+)
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--- a/drivers/net/ethernet/realtek/r8169_main.c
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+++ b/drivers/net/ethernet/realtek/r8169_main.c
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@@ -5227,6 +5227,33 @@ static int r8169_mdio_write_reg(struct m
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return 0;
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}
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+static int r8169_mdio_read_reg_c45(struct mii_bus *mii_bus, int addr,
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+ int devnum, int regnum)
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+{
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+ struct rtl8169_private *tp = mii_bus->priv;
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+
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+ if (addr > 0)
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+ return -ENODEV;
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+
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+ if (devnum == MDIO_MMD_VEND2 && regnum > MDIO_STAT2)
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+ return r8168_phy_ocp_read(tp, regnum);
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+
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+ return 0;
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+}
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+
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+static int r8169_mdio_write_reg_c45(struct mii_bus *mii_bus, int addr,
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+ int devnum, int regnum, u16 val)
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+{
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+ struct rtl8169_private *tp = mii_bus->priv;
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+
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+ if (addr > 0 || devnum != MDIO_MMD_VEND2 || regnum <= MDIO_STAT2)
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+ return -ENODEV;
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+
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+ r8168_phy_ocp_write(tp, regnum, val);
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+
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+ return 0;
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+}
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+
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static int r8169_mdio_register(struct rtl8169_private *tp)
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{
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struct pci_dev *pdev = tp->pci_dev;
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@@ -5257,6 +5284,11 @@ static int r8169_mdio_register(struct rt
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new_bus->read = r8169_mdio_read_reg;
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new_bus->write = r8169_mdio_write_reg;
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+ if (tp->mac_version >= RTL_GIGA_MAC_VER_40) {
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+ new_bus->read_c45 = r8169_mdio_read_reg_c45;
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+ new_bus->write_c45 = r8169_mdio_write_reg_c45;
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+ }
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+
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ret = devm_mdiobus_register(&pdev->dev, new_bus);
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if (ret)
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return ret;
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