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phy.h
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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  * <[email protected]>
8  *
9  * Based on the arch/ppc version of the driver:
10  *
11  * Benjamin Herrenschmidt <[email protected]>
12  * February 2003
13  *
14  * Minor additions by Eugene Surovegin <[email protected]>, 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 */
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