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 */