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

   1 /*
   2  * drivers/net/ethernet/ibm/emac/phy.h
   3  *
   4  * Driver for PowerPC 4xx on-chip ethernet controller, PHY support
   5  *
   6  * Copyright 2007 Benjamin Herrenschmidt, IBM Corp.
   7  *                <benh@kernel.crashing.org>
   8  *
   9  * Based on the arch/ppc version of the driver:
  10  *
  11  * Benjamin Herrenschmidt <benh@kernel.crashing.org>
  12  * February 2003
  13  *
  14  * Minor additions by Eugene Surovegin <ebs@ebshome.net>, 2004
  15  *
  16  * This program is free software; you can redistribute  it and/or modify it
  17  * under  the terms of  the GNU General  Public License as published by the
  18  * Free Software Foundation;  either version 2 of the  License, or (at your
  19  * option) any later version.
  20  *
  21  * This file basically duplicates sungem_phy.{c,h} with different PHYs
  22  * supported. I'm looking into merging that in a single mii layer more
  23  * flexible than mii.c
  24  */
  25
  26 #ifndef __IBM_NEWEMAC_PHY_H
  27 #define __IBM_NEWEMAC_PHY_H
  28
  29 struct mii_phy;
  30
  31 /* Operations supported by any kind of PHY */
  32 struct mii_phy_ops {
  33         int (*init) (struct mii_phy * phy);
  34         int (*suspend) (struct mii_phy * phy, int wol_options);
  35         int (*setup_aneg) (struct mii_phy * phy, u32 advertise);
  36         int (*setup_forced) (struct mii_phy * phy, int speed, int fd);
  37         int (*poll_link) (struct mii_phy * phy);
  38         int (*read_link) (struct mii_phy * phy);
  39 };
  40
  41 /* Structure used to statically define an mii/gii based PHY */
  42 struct mii_phy_def {
  43         u32 phy_id;             /* Concatenated ID1 << 16 | ID2 */
  44         u32 phy_id_mask;        /* Significant bits */
  45         u32 features;           /* Ethtool SUPPORTED_* defines or
  46                                    0 for autodetect */
  47         int magic_aneg;         /* Autoneg does all speed test for us */
  48         const char *name;
  49         const struct mii_phy_ops *ops;
  50 };
  51
  52 /* An instance of a PHY, partially borrowed from mii_if_info */
  53 struct mii_phy {
  54         struct mii_phy_def *def;
  55         u32 advertising;        /* Ethtool ADVERTISED_* defines */
  56         u32 features;           /* Copied from mii_phy_def.features
  57                                    or determined automaticaly */
  58         int address;            /* PHY address */
  59         int mode;               /* PHY mode */
  60         int gpcs_address;       /* GPCS PHY address */
  61
  62         /* 1: autoneg enabled, 0: disabled */
  63         int autoneg;
  64
  65         /* forced speed & duplex (no autoneg)
  66          * partner speed & duplex & pause (autoneg)
  67          */
  68         int speed;
  69         int duplex;
  70         int pause;
  71         int asym_pause;
  72
  73         /* Provided by host chip */
  74         struct net_device *dev;
  75         int (*mdio_read) (struct net_device * dev, int addr, int reg);
  76         void (*mdio_write) (struct net_device * dev, int addr, int reg,
  77                             int val);
  78 };
  79
  80 /* Pass in a struct mii_phy with dev, mdio_read and mdio_write
  81  * filled, the remaining fields will be filled on return
  82  */
  83 int emac_mii_phy_probe(struct mii_phy *phy, int address);
  84 int emac_mii_reset_phy(struct mii_phy *phy);
  85 int emac_mii_reset_gpcs(struct mii_phy *phy);
  86
  87 #endif /* __IBM_NEWEMAC_PHY_H */