drivers/net/ethernet/ibm/emac/phy.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3  * drivers/net/ethernet/ibm/emac/phy.h
   4  *
   5  * Driver for PowerPC 4xx on-chip ethernet controller, PHY support
   6  *
   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 2003
  14  *
  15  * Minor additions by Eugene Surovegin <ebs@ebshome.net>, 2004
  16  *
  17  * This file basically duplicates sungem_phy.{c,h} with different PHYs
  18  * supported. I'm looking into merging that in a single mii layer more
  19  * flexible than mii.c
  20  */
  21
  22 #ifndef __IBM_NEWEMAC_PHY_H
  23 #define __IBM_NEWEMAC_PHY_H
  24
  25 struct mii_phy;
  26
  27 /* Operations supported by any kind of PHY */
  28 struct 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 */
  38 struct mii_phy_def {
  39         u32 phy_id;             /* Concatenated ID1 << 16 | ID2 */
  40         u32 phy_id_mask;        /* Significant bits */
  41         u32 features;           /* Ethtool SUPPORTED_* defines or
  42                                    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 */
  49 struct mii_phy {
  50         struct mii_phy_def *def;
  51         u32 advertising;        /* Ethtool ADVERTISED_* defines */
  52         u32 features;           /* Copied from mii_phy_def.features
  53                                    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_write
  77  * filled, the remaining fields will be filled on return
  78  */
  79 int emac_mii_phy_probe(struct mii_phy *phy, int address);
  80 int emac_mii_reset_phy(struct mii_phy *phy);
  81 int emac_mii_reset_gpcs(struct mii_phy *phy);
  82
  83 #endif /* __IBM_NEWEMAC_PHY_H */