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61 lines
2.3 KiB
Diff
61 lines
2.3 KiB
Diff
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From 1a7aa058bc92f0edae7a0d1ef1a7b05aec0c643a Mon Sep 17 00:00:00 2001
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From: "Russell King (Oracle)" <rmk+kernel@armlinux.org.uk>
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Date: Fri, 24 Nov 2023 12:27:52 +0000
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Subject: [PATCH 1/7] net: phy: add possible interfaces
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Add a possible_interfaces member to struct phy_device to indicate which
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interfaces a clause 45 PHY may switch between depending on the media.
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This must be populated by the PHY driver by the time the .config_init()
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method completes according to the PHYs host-side configuration.
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For example, the Marvell 88x3310 PHY can switch between 10GBASE-R,
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5GBASE-R, 2500BASE-X, and SGMII on the host side depending on the media
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side speed, so all these interface modes are set in the
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possible_interfaces member.
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This allows phylib users (such as phylink) to know in advance which
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interface modes to expect, which allows them to appropriately restrict
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the advertised link modes according to the capabilities of other parts
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of the link.
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Tested-by: Luo Jie <quic_luoj@quicinc.com>
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Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
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Reviewed-by: Andrew Lunn <andrew@lunn.ch>
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Link: https://lore.kernel.org/r/E1r6VHk-00DDLN-I7@rmk-PC.armlinux.org.uk
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Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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---
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drivers/net/phy/phy_device.c | 2 ++
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include/linux/phy.h | 3 +++
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2 files changed, 5 insertions(+)
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--- a/drivers/net/phy/phy_device.c
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+++ b/drivers/net/phy/phy_device.c
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@@ -1215,6 +1215,8 @@ int phy_init_hw(struct phy_device *phyde
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if (ret < 0)
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return ret;
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+ phy_interface_zero(phydev->possible_interfaces);
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+
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if (phydev->drv->config_init) {
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ret = phydev->drv->config_init(phydev);
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if (ret < 0)
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--- a/include/linux/phy.h
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+++ b/include/linux/phy.h
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@@ -600,6 +600,8 @@ struct macsec_ops;
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* @irq_rerun: Flag indicating interrupts occurred while PHY was suspended,
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* requiring a rerun of the interrupt handler after resume
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* @interface: enum phy_interface_t value
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+ * @possible_interfaces: bitmap if interface modes that the attached PHY
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+ * will switch between depending on media speed.
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* @skb: Netlink message for cable diagnostics
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* @nest: Netlink nest used for cable diagnostics
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* @ehdr: nNtlink header for cable diagnostics
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@@ -665,6 +667,7 @@ struct phy_device {
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u32 dev_flags;
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phy_interface_t interface;
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+ DECLARE_PHY_INTERFACE_MASK(possible_interfaces);
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/*
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* forced speed & duplex (no autoneg)
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