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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 | extern void |
74 | mdio45_ethtool_spauseparam_an(const struct mdio_if_info *mdio, |
75 | const struct ethtool_pauseparam *ecmd); |
76 | |
77 | /** |
78 | * mdio45_ethtool_gset - get settings for ETHTOOL_GSET |
79 | * @mdio: MDIO interface |
80 | * @ecmd: Ethtool request structure |
81 | * |
82 | * Since the CSRs for auto-negotiation using next pages are not fully |
83 | * standardised, this function does not attempt to decode them. Use |
84 | * mdio45_ethtool_gset_npage() to specify advertisement bits from next |
85 | * pages. |
86 | */ |
87 | static inline void mdio45_ethtool_gset(const struct mdio_if_info *mdio, |
88 | struct ethtool_cmd *ecmd) |
89 | { |
90 | mdio45_ethtool_gset_npage(mdio, ecmd, 0, 0); |
91 | } |
92 | |
93 | extern int mdio_mii_ioctl(const struct mdio_if_info *mdio, |
94 | struct mii_ioctl_data *mii_data, int cmd); |
95 | |
96 | /** |
97 | * mmd_eee_cap_to_ethtool_sup_t |
98 | * @eee_cap: value of the MMD EEE Capability register |
99 | * |
100 | * A small helper function that translates MMD EEE Capability (3.20) bits |
101 | * to ethtool supported settings. |
102 | */ |
103 | static inline u32 mmd_eee_cap_to_ethtool_sup_t(u16 eee_cap) |
104 | { |
105 | u32 supported = 0; |
106 | |
107 | if (eee_cap & MDIO_EEE_100TX) |
108 | supported |= SUPPORTED_100baseT_Full; |
109 | if (eee_cap & MDIO_EEE_1000T) |
110 | supported |= SUPPORTED_1000baseT_Full; |
111 | if (eee_cap & MDIO_EEE_10GT) |
112 | supported |= SUPPORTED_10000baseT_Full; |
113 | if (eee_cap & MDIO_EEE_1000KX) |
114 | supported |= SUPPORTED_1000baseKX_Full; |
115 | if (eee_cap & MDIO_EEE_10GKX4) |
116 | supported |= SUPPORTED_10000baseKX4_Full; |
117 | if (eee_cap & MDIO_EEE_10GKR) |
118 | supported |= SUPPORTED_10000baseKR_Full; |
119 | |
120 | return supported; |
121 | } |
122 | |
123 | /** |
124 | * mmd_eee_adv_to_ethtool_adv_t |
125 | * @eee_adv: value of the MMD EEE Advertisement/Link Partner Ability registers |
126 | * |
127 | * A small helper function that translates the MMD EEE Advertisment (7.60) |
128 | * and MMD EEE Link Partner Ability (7.61) bits to ethtool advertisement |
129 | * settings. |
130 | */ |
131 | static inline u32 mmd_eee_adv_to_ethtool_adv_t(u16 eee_adv) |
132 | { |
133 | u32 adv = 0; |
134 | |
135 | if (eee_adv & MDIO_EEE_100TX) |
136 | adv |= ADVERTISED_100baseT_Full; |
137 | if (eee_adv & MDIO_EEE_1000T) |
138 | adv |= ADVERTISED_1000baseT_Full; |
139 | if (eee_adv & MDIO_EEE_10GT) |
140 | adv |= ADVERTISED_10000baseT_Full; |
141 | if (eee_adv & MDIO_EEE_1000KX) |
142 | adv |= ADVERTISED_1000baseKX_Full; |
143 | if (eee_adv & MDIO_EEE_10GKX4) |
144 | adv |= ADVERTISED_10000baseKX4_Full; |
145 | if (eee_adv & MDIO_EEE_10GKR) |
146 | adv |= ADVERTISED_10000baseKR_Full; |
147 | |
148 | return adv; |
149 | } |
150 | |
151 | /** |
152 | * ethtool_adv_to_mmd_eee_adv_t |
153 | * @adv: the ethtool advertisement settings |
154 | * |
155 | * A small helper function that translates ethtool advertisement settings |
156 | * to EEE advertisements for the MMD EEE Advertisement (7.60) and |
157 | * MMD EEE Link Partner Ability (7.61) registers. |
158 | */ |
159 | static inline u16 ethtool_adv_to_mmd_eee_adv_t(u32 adv) |
160 | { |
161 | u16 reg = 0; |
162 | |
163 | if (adv & ADVERTISED_100baseT_Full) |
164 | reg |= MDIO_EEE_100TX; |
165 | if (adv & ADVERTISED_1000baseT_Full) |
166 | reg |= MDIO_EEE_1000T; |
167 | if (adv & ADVERTISED_10000baseT_Full) |
168 | reg |= MDIO_EEE_10GT; |
169 | if (adv & ADVERTISED_1000baseKX_Full) |
170 | reg |= MDIO_EEE_1000KX; |
171 | if (adv & ADVERTISED_10000baseKX4_Full) |
172 | reg |= MDIO_EEE_10GKX4; |
173 | if (adv & ADVERTISED_10000baseKR_Full) |
174 | reg |= MDIO_EEE_10GKR; |
175 | |
176 | return reg; |
177 | } |
178 | |
179 | #endif /* __LINUX_MDIO_H__ */ |
180 |
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