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1/* SPDX-License-Identifier: GPL-2.0-or-later */2/*3 * drivers/net/ethernet/ibm/emac/phy.h4 *5 * Driver for PowerPC 4xx on-chip ethernet controller, PHY support6 *7 * Copyright 2007 Benjamin Herrenschmidt, IBM Corp.8 * <benh@kernel.crashing.org>9 *10 * Based on the arch/ppc version of the driver:11 *12 * Benjamin Herrenschmidt <benh@kernel.crashing.org>13 * February 200314 *15 * Minor additions by Eugene Surovegin <ebs@ebshome.net>, 200416 *17 * This file basically duplicates sungem_phy.{c,h} with different PHYs18 * supported. I'm looking into merging that in a single mii layer more19 * flexible than mii.c20 */21 22#ifndef __IBM_NEWEMAC_PHY_H23#define __IBM_NEWEMAC_PHY_H24 25struct mii_phy;26 27/* Operations supported by any kind of PHY */28struct mii_phy_ops {29 int (*init) (struct mii_phy * phy);30 int (*suspend) (struct mii_phy * phy, int wol_options);31 int (*setup_aneg) (struct mii_phy * phy, u32 advertise);32 int (*setup_forced) (struct mii_phy * phy, int speed, int fd);33 int (*poll_link) (struct mii_phy * phy);34 int (*read_link) (struct mii_phy * phy);35};36 37/* Structure used to statically define an mii/gii based PHY */38struct mii_phy_def {39 u32 phy_id; /* Concatenated ID1 << 16 | ID2 */40 u32 phy_id_mask; /* Significant bits */41 u32 features; /* Ethtool SUPPORTED_* defines or42 0 for autodetect */43 int magic_aneg; /* Autoneg does all speed test for us */44 const char *name;45 const struct mii_phy_ops *ops;46};47 48/* An instance of a PHY, partially borrowed from mii_if_info */49struct mii_phy {50 struct mii_phy_def *def;51 u32 advertising; /* Ethtool ADVERTISED_* defines */52 u32 features; /* Copied from mii_phy_def.features53 or determined automaticaly */54 int address; /* PHY address */55 int mode; /* PHY mode */56 int gpcs_address; /* GPCS PHY address */57 58 /* 1: autoneg enabled, 0: disabled */59 int autoneg;60 61 /* forced speed & duplex (no autoneg)62 * partner speed & duplex & pause (autoneg)63 */64 int speed;65 int duplex;66 int pause;67 int asym_pause;68 69 /* Provided by host chip */70 struct net_device *dev;71 int (*mdio_read) (struct net_device * dev, int addr, int reg);72 void (*mdio_write) (struct net_device * dev, int addr, int reg,73 int val);74};75 76/* Pass in a struct mii_phy with dev, mdio_read and mdio_write77 * filled, the remaining fields will be filled on return78 */79int emac_mii_phy_probe(struct mii_phy *phy, int address);80int emac_mii_reset_phy(struct mii_phy *phy);81int emac_mii_reset_gpcs(struct mii_phy *phy);82 83#endif /* __IBM_NEWEMAC_PHY_H */84