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52c94dfa BH |
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 | */ | |
52c94dfa BH |
9 | #ifndef __LINUX_MDIO_H__ |
10 | #define __LINUX_MDIO_H__ | |
11 | ||
607ca46e | 12 | #include <uapi/linux/mdio.h> |
52c94dfa | 13 | |
bac83c65 | 14 | struct mii_bus; |
9c717758 | 15 | |
52c94dfa BH |
16 | static inline bool mdio_phy_id_is_c45(int phy_id) |
17 | { | |
18 | return (phy_id & MDIO_PHY_ID_C45) && !(phy_id & ~MDIO_PHY_ID_C45_MASK); | |
19 | } | |
20 | ||
21 | static inline __u16 mdio_phy_id_prtad(int phy_id) | |
22 | { | |
23 | return (phy_id & MDIO_PHY_ID_PRTAD) >> 5; | |
24 | } | |
25 | ||
26 | static inline __u16 mdio_phy_id_devad(int phy_id) | |
27 | { | |
28 | return phy_id & MDIO_PHY_ID_DEVAD; | |
29 | } | |
30 | ||
1b1c2e95 BH |
31 | /** |
32 | * struct mdio_if_info - Ethernet controller MDIO interface | |
33 | * @prtad: PRTAD of the PHY (%MDIO_PRTAD_NONE if not present/unknown) | |
34 | * @mmds: Mask of MMDs expected to be present in the PHY. This must be | |
35 | * non-zero unless @prtad = %MDIO_PRTAD_NONE. | |
36 | * @mode_support: MDIO modes supported. If %MDIO_SUPPORTS_C22 is set then | |
37 | * MII register access will be passed through with @devad = | |
38 | * %MDIO_DEVAD_NONE. If %MDIO_EMULATE_C22 is set then access to | |
39 | * commonly used clause 22 registers will be translated into | |
40 | * clause 45 registers. | |
41 | * @dev: Net device structure | |
42 | * @mdio_read: Register read function; returns value or negative error code | |
43 | * @mdio_write: Register write function; returns 0 or negative error code | |
44 | */ | |
45 | struct mdio_if_info { | |
46 | int prtad; | |
23428e6b | 47 | u32 mmds; |
1b1c2e95 BH |
48 | unsigned mode_support; |
49 | ||
50 | struct net_device *dev; | |
51 | int (*mdio_read)(struct net_device *dev, int prtad, int devad, | |
52 | u16 addr); | |
53 | int (*mdio_write)(struct net_device *dev, int prtad, int devad, | |
54 | u16 addr, u16 val); | |
55 | }; | |
56 | ||
57 | #define MDIO_PRTAD_NONE (-1) | |
58 | #define MDIO_DEVAD_NONE (-1) | |
9c717758 BH |
59 | #define MDIO_SUPPORTS_C22 1 |
60 | #define MDIO_SUPPORTS_C45 2 | |
1b1c2e95 BH |
61 | #define MDIO_EMULATE_C22 4 |
62 | ||
63 | struct ethtool_cmd; | |
64 | struct ethtool_pauseparam; | |
65 | extern int mdio45_probe(struct mdio_if_info *mdio, int prtad); | |
66 | extern int mdio_set_flag(const struct mdio_if_info *mdio, | |
67 | int prtad, int devad, u16 addr, int mask, | |
68 | bool sense); | |
69 | extern int mdio45_links_ok(const struct mdio_if_info *mdio, u32 mmds); | |
70 | extern int mdio45_nway_restart(const struct mdio_if_info *mdio); | |
71 | extern void mdio45_ethtool_gset_npage(const struct mdio_if_info *mdio, | |
72 | struct ethtool_cmd *ecmd, | |
73 | u32 npage_adv, u32 npage_lpa); | |
74 | ||
75 | /** | |
76 | * mdio45_ethtool_gset - get settings for ETHTOOL_GSET | |
77 | * @mdio: MDIO interface | |
78 | * @ecmd: Ethtool request structure | |
79 | * | |
80 | * Since the CSRs for auto-negotiation using next pages are not fully | |
81 | * standardised, this function does not attempt to decode them. Use | |
82 | * mdio45_ethtool_gset_npage() to specify advertisement bits from next | |
83 | * pages. | |
84 | */ | |
85 | static inline void mdio45_ethtool_gset(const struct mdio_if_info *mdio, | |
86 | struct ethtool_cmd *ecmd) | |
87 | { | |
88 | mdio45_ethtool_gset_npage(mdio, ecmd, 0, 0); | |
89 | } | |
90 | ||
91 | extern int mdio_mii_ioctl(const struct mdio_if_info *mdio, | |
92 | struct mii_ioctl_data *mii_data, int cmd); | |
93 | ||
b32607dd AB |
94 | /** |
95 | * mmd_eee_cap_to_ethtool_sup_t | |
96 | * @eee_cap: value of the MMD EEE Capability register | |
97 | * | |
98 | * A small helper function that translates MMD EEE Capability (3.20) bits | |
99 | * to ethtool supported settings. | |
100 | */ | |
101 | static inline u32 mmd_eee_cap_to_ethtool_sup_t(u16 eee_cap) | |
102 | { | |
103 | u32 supported = 0; | |
104 | ||
105 | if (eee_cap & MDIO_EEE_100TX) | |
106 | supported |= SUPPORTED_100baseT_Full; | |
107 | if (eee_cap & MDIO_EEE_1000T) | |
108 | supported |= SUPPORTED_1000baseT_Full; | |
109 | if (eee_cap & MDIO_EEE_10GT) | |
110 | supported |= SUPPORTED_10000baseT_Full; | |
111 | if (eee_cap & MDIO_EEE_1000KX) | |
112 | supported |= SUPPORTED_1000baseKX_Full; | |
113 | if (eee_cap & MDIO_EEE_10GKX4) | |
114 | supported |= SUPPORTED_10000baseKX4_Full; | |
115 | if (eee_cap & MDIO_EEE_10GKR) | |
116 | supported |= SUPPORTED_10000baseKR_Full; | |
117 | ||
118 | return supported; | |
119 | } | |
120 | ||
121 | /** | |
122 | * mmd_eee_adv_to_ethtool_adv_t | |
123 | * @eee_adv: value of the MMD EEE Advertisement/Link Partner Ability registers | |
124 | * | |
125 | * A small helper function that translates the MMD EEE Advertisment (7.60) | |
126 | * and MMD EEE Link Partner Ability (7.61) bits to ethtool advertisement | |
127 | * settings. | |
128 | */ | |
129 | static inline u32 mmd_eee_adv_to_ethtool_adv_t(u16 eee_adv) | |
130 | { | |
131 | u32 adv = 0; | |
132 | ||
133 | if (eee_adv & MDIO_EEE_100TX) | |
134 | adv |= ADVERTISED_100baseT_Full; | |
135 | if (eee_adv & MDIO_EEE_1000T) | |
136 | adv |= ADVERTISED_1000baseT_Full; | |
137 | if (eee_adv & MDIO_EEE_10GT) | |
138 | adv |= ADVERTISED_10000baseT_Full; | |
139 | if (eee_adv & MDIO_EEE_1000KX) | |
140 | adv |= ADVERTISED_1000baseKX_Full; | |
141 | if (eee_adv & MDIO_EEE_10GKX4) | |
142 | adv |= ADVERTISED_10000baseKX4_Full; | |
143 | if (eee_adv & MDIO_EEE_10GKR) | |
144 | adv |= ADVERTISED_10000baseKR_Full; | |
145 | ||
146 | return adv; | |
147 | } | |
148 | ||
149 | /** | |
150 | * ethtool_adv_to_mmd_eee_adv_t | |
151 | * @adv: the ethtool advertisement settings | |
152 | * | |
153 | * A small helper function that translates ethtool advertisement settings | |
154 | * to EEE advertisements for the MMD EEE Advertisement (7.60) and | |
155 | * MMD EEE Link Partner Ability (7.61) registers. | |
156 | */ | |
157 | static inline u16 ethtool_adv_to_mmd_eee_adv_t(u32 adv) | |
158 | { | |
159 | u16 reg = 0; | |
160 | ||
161 | if (adv & ADVERTISED_100baseT_Full) | |
162 | reg |= MDIO_EEE_100TX; | |
163 | if (adv & ADVERTISED_1000baseT_Full) | |
164 | reg |= MDIO_EEE_1000T; | |
165 | if (adv & ADVERTISED_10000baseT_Full) | |
166 | reg |= MDIO_EEE_10GT; | |
167 | if (adv & ADVERTISED_1000baseKX_Full) | |
168 | reg |= MDIO_EEE_1000KX; | |
169 | if (adv & ADVERTISED_10000baseKX4_Full) | |
170 | reg |= MDIO_EEE_10GKX4; | |
171 | if (adv & ADVERTISED_10000baseKR_Full) | |
172 | reg |= MDIO_EEE_10GKR; | |
173 | ||
174 | return reg; | |
175 | } | |
176 | ||
bac83c65 AL |
177 | int mdiobus_read(struct mii_bus *bus, int addr, u32 regnum); |
178 | int mdiobus_read_nested(struct mii_bus *bus, int addr, u32 regnum); | |
179 | int mdiobus_write(struct mii_bus *bus, int addr, u32 regnum, u16 val); | |
180 | int mdiobus_write_nested(struct mii_bus *bus, int addr, u32 regnum, u16 val); | |
181 | ||
52c94dfa | 182 | #endif /* __LINUX_MDIO_H__ */ |