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 */
84