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1 : : /*
2 : : * linux/mdio.h: definitions for MDIO (clause 45) transceivers
3 : : * Copyright 2006-2009 Solarflare Communications Inc.
4 : : *
5 : : * This program is free software; you can redistribute it and/or modify it
6 : : * under the terms of the GNU General Public License version 2 as published
7 : : * by the Free Software Foundation, incorporated herein by reference.
8 : : */
9 : : #ifndef __LINUX_MDIO_H__
10 : : #define __LINUX_MDIO_H__
11 : :
12 : : #include <uapi/linux/mdio.h>
13 : :
14 : :
15 : : static inline bool mdio_phy_id_is_c45(int phy_id)
16 : : {
17 : : return (phy_id & MDIO_PHY_ID_C45) && !(phy_id & ~MDIO_PHY_ID_C45_MASK);
18 : : }
19 : :
20 : : static inline __u16 mdio_phy_id_prtad(int phy_id)
21 : : {
22 : : return (phy_id & MDIO_PHY_ID_PRTAD) >> 5;
23 : : }
24 : :
25 : : static inline __u16 mdio_phy_id_devad(int phy_id)
26 : : {
27 : : return phy_id & MDIO_PHY_ID_DEVAD;
28 : : }
29 : :
30 : : /**
31 : : * struct mdio_if_info - Ethernet controller MDIO interface
32 : : * @prtad: PRTAD of the PHY (%MDIO_PRTAD_NONE if not present/unknown)
33 : : * @mmds: Mask of MMDs expected to be present in the PHY. This must be
34 : : * non-zero unless @prtad = %MDIO_PRTAD_NONE.
35 : : * @mode_support: MDIO modes supported. If %MDIO_SUPPORTS_C22 is set then
36 : : * MII register access will be passed through with @devad =
37 : : * %MDIO_DEVAD_NONE. If %MDIO_EMULATE_C22 is set then access to
38 : : * commonly used clause 22 registers will be translated into
39 : : * clause 45 registers.
40 : : * @dev: Net device structure
41 : : * @mdio_read: Register read function; returns value or negative error code
42 : : * @mdio_write: Register write function; returns 0 or negative error code
43 : : */
44 : : struct mdio_if_info {
45 : : int prtad;
46 : : u32 mmds;
47 : : unsigned mode_support;
48 : :
49 : : struct net_device *dev;
50 : : int (*mdio_read)(struct net_device *dev, int prtad, int devad,
51 : : u16 addr);
52 : : int (*mdio_write)(struct net_device *dev, int prtad, int devad,
53 : : u16 addr, u16 val);
54 : : };
55 : :
56 : : #define MDIO_PRTAD_NONE (-1)
57 : : #define MDIO_DEVAD_NONE (-1)
58 : : #define MDIO_SUPPORTS_C22 1
59 : : #define MDIO_SUPPORTS_C45 2
60 : : #define MDIO_EMULATE_C22 4
61 : :
62 : : struct ethtool_cmd;
63 : : struct ethtool_pauseparam;
64 : : extern int mdio45_probe(struct mdio_if_info *mdio, int prtad);
65 : : extern int mdio_set_flag(const struct mdio_if_info *mdio,
66 : : int prtad, int devad, u16 addr, int mask,
67 : : bool sense);
68 : : extern int mdio45_links_ok(const struct mdio_if_info *mdio, u32 mmds);
69 : : extern int mdio45_nway_restart(const struct mdio_if_info *mdio);
70 : : extern void mdio45_ethtool_gset_npage(const struct mdio_if_info *mdio,
71 : : struct ethtool_cmd *ecmd,
72 : : u32 npage_adv, u32 npage_lpa);
73 : :
74 : : /**
75 : : * mdio45_ethtool_gset - get settings for ETHTOOL_GSET
76 : : * @mdio: MDIO interface
77 : : * @ecmd: Ethtool request structure
78 : : *
79 : : * Since the CSRs for auto-negotiation using next pages are not fully
80 : : * standardised, this function does not attempt to decode them. Use
81 : : * mdio45_ethtool_gset_npage() to specify advertisement bits from next
82 : : * pages.
83 : : */
84 : : static inline void mdio45_ethtool_gset(const struct mdio_if_info *mdio,
85 : : struct ethtool_cmd *ecmd)
86 : : {
87 : : mdio45_ethtool_gset_npage(mdio, ecmd, 0, 0);
88 : : }
89 : :
90 : : extern int mdio_mii_ioctl(const struct mdio_if_info *mdio,
91 : : struct mii_ioctl_data *mii_data, int cmd);
92 : :
93 : : /**
94 : : * mmd_eee_cap_to_ethtool_sup_t
95 : : * @eee_cap: value of the MMD EEE Capability register
96 : : *
97 : : * A small helper function that translates MMD EEE Capability (3.20) bits
98 : : * to ethtool supported settings.
99 : : */
100 : : static inline u32 mmd_eee_cap_to_ethtool_sup_t(u16 eee_cap)
101 : : {
102 : : u32 supported = 0;
103 : :
104 [ # # ][ # # ]: 0 : if (eee_cap & MDIO_EEE_100TX)
105 : : supported |= SUPPORTED_100baseT_Full;
106 [ # # ][ # # ]: 0 : if (eee_cap & MDIO_EEE_1000T)
107 : 0 : supported |= SUPPORTED_1000baseT_Full;
108 [ # # ][ # # ]: 0 : if (eee_cap & MDIO_EEE_10GT)
109 : 0 : supported |= SUPPORTED_10000baseT_Full;
110 [ # # ][ # # ]: 0 : if (eee_cap & MDIO_EEE_1000KX)
111 : 0 : supported |= SUPPORTED_1000baseKX_Full;
112 [ # # ][ # # ]: 0 : if (eee_cap & MDIO_EEE_10GKX4)
113 : 0 : supported |= SUPPORTED_10000baseKX4_Full;
114 [ # # ][ # # ]: 0 : if (eee_cap & MDIO_EEE_10GKR)
115 : 0 : supported |= SUPPORTED_10000baseKR_Full;
116 : :
117 : : return supported;
118 : : }
119 : :
120 : : /**
121 : : * mmd_eee_adv_to_ethtool_adv_t
122 : : * @eee_adv: value of the MMD EEE Advertisement/Link Partner Ability registers
123 : : *
124 : : * A small helper function that translates the MMD EEE Advertisment (7.60)
125 : : * and MMD EEE Link Partner Ability (7.61) bits to ethtool advertisement
126 : : * settings.
127 : : */
128 : : static inline u32 mmd_eee_adv_to_ethtool_adv_t(u16 eee_adv)
129 : : {
130 : : u32 adv = 0;
131 : :
132 [ # # ][ # # ]: 0 : if (eee_adv & MDIO_EEE_100TX)
[ # # ][ # # ]
133 : : adv |= ADVERTISED_100baseT_Full;
134 [ # # ][ # # ]: 0 : if (eee_adv & MDIO_EEE_1000T)
[ # # ][ # # ]
135 : 0 : adv |= ADVERTISED_1000baseT_Full;
136 [ # # ][ # # ]: 0 : if (eee_adv & MDIO_EEE_10GT)
[ # # ][ # # ]
137 : 0 : adv |= ADVERTISED_10000baseT_Full;
138 [ # # ][ # # ]: 0 : if (eee_adv & MDIO_EEE_1000KX)
[ # # ][ # # ]
139 : 0 : adv |= ADVERTISED_1000baseKX_Full;
140 [ # # ][ # # ]: 0 : if (eee_adv & MDIO_EEE_10GKX4)
[ # # ][ # # ]
141 : 0 : adv |= ADVERTISED_10000baseKX4_Full;
142 [ # # ][ # # ]: 0 : if (eee_adv & MDIO_EEE_10GKR)
[ # # ][ # # ]
143 : 0 : adv |= ADVERTISED_10000baseKR_Full;
144 : :
145 : : return adv;
146 : : }
147 : :
148 : : /**
149 : : * ethtool_adv_to_mmd_eee_adv_t
150 : : * @adv: the ethtool advertisement settings
151 : : *
152 : : * A small helper function that translates ethtool advertisement settings
153 : : * to EEE advertisements for the MMD EEE Advertisement (7.60) and
154 : : * MMD EEE Link Partner Ability (7.61) registers.
155 : : */
156 : : static inline u16 ethtool_adv_to_mmd_eee_adv_t(u32 adv)
157 : : {
158 : : u16 reg = 0;
159 : :
160 [ # # ]: 0 : if (adv & ADVERTISED_100baseT_Full)
161 : : reg |= MDIO_EEE_100TX;
162 [ # # ]: 0 : if (adv & ADVERTISED_1000baseT_Full)
163 : 0 : reg |= MDIO_EEE_1000T;
164 [ # # ]: 0 : if (adv & ADVERTISED_10000baseT_Full)
165 : 0 : reg |= MDIO_EEE_10GT;
166 [ # # ]: 0 : if (adv & ADVERTISED_1000baseKX_Full)
167 : 0 : reg |= MDIO_EEE_1000KX;
168 [ # # ]: 0 : if (adv & ADVERTISED_10000baseKX4_Full)
169 : 0 : reg |= MDIO_EEE_10GKX4;
170 [ # # ]: 0 : if (adv & ADVERTISED_10000baseKR_Full)
171 : 0 : reg |= MDIO_EEE_10GKR;
172 : :
173 : : return reg;
174 : : }
175 : :
176 : : #endif /* __LINUX_MDIO_H__ */
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