LXR linux/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
  29struct mii_phy;
  30
  31/* Operations supported by any kind of PHY */
  32struct 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 */
  42struct 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 */
  53struct 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 */
  83int emac_mii_phy_probe(struct mii_phy *phy, int address);
  84int emac_mii_reset_phy(struct mii_phy *phy);
  85int emac_mii_reset_gpcs(struct mii_phy *phy);
  86
  87#endif /* __IBM_NEWEMAC_PHY_H */
  88