2 * linux/mdio.h: definitions for MDIO (clause 45) transceivers
3 * Copyright 2006-2009 Solarflare Communications Inc.
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.
9 #ifndef __LINUX_MDIO_H__
10 #define __LINUX_MDIO_H__
12 #include <uapi/linux/mdio.h>
15 static inline bool mdio_phy_id_is_c45(int phy_id
)
17 return (phy_id
& MDIO_PHY_ID_C45
) && !(phy_id
& ~MDIO_PHY_ID_C45_MASK
);
20 static inline __u16
mdio_phy_id_prtad(int phy_id
)
22 return (phy_id
& MDIO_PHY_ID_PRTAD
) >> 5;
25 static inline __u16
mdio_phy_id_devad(int phy_id
)
27 return phy_id
& MDIO_PHY_ID_DEVAD
;
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
47 unsigned mode_support
;
49 struct net_device
*dev
;
50 int (*mdio_read
)(struct net_device
*dev
, int prtad
, int devad
,
52 int (*mdio_write
)(struct net_device
*dev
, int prtad
, int devad
,
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
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
,
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
);
74 mdio45_ethtool_spauseparam_an(const struct mdio_if_info
*mdio
,
75 const struct ethtool_pauseparam
*ecmd
);
78 * mdio45_ethtool_gset - get settings for ETHTOOL_GSET
79 * @mdio: MDIO interface
80 * @ecmd: Ethtool request structure
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
87 static inline void mdio45_ethtool_gset(const struct mdio_if_info
*mdio
,
88 struct ethtool_cmd
*ecmd
)
90 mdio45_ethtool_gset_npage(mdio
, ecmd
, 0, 0);
93 extern int mdio_mii_ioctl(const struct mdio_if_info
*mdio
,
94 struct mii_ioctl_data
*mii_data
, int cmd
);
97 * mmd_eee_cap_to_ethtool_sup_t
98 * @eee_cap: value of the MMD EEE Capability register
100 * A small helper function that translates MMD EEE Capability (3.20) bits
101 * to ethtool supported settings.
103 static inline u32
mmd_eee_cap_to_ethtool_sup_t(u16 eee_cap
)
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
;
124 * mmd_eee_adv_to_ethtool_adv_t
125 * @eee_adv: value of the MMD EEE Advertisement/Link Partner Ability registers
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
131 static inline u32
mmd_eee_adv_to_ethtool_adv_t(u16 eee_adv
)
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
;
152 * ethtool_adv_to_mmd_eee_adv_t
153 * @adv: the ethtool advertisement settings
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.
159 static inline u16
ethtool_adv_to_mmd_eee_adv_t(u32 adv
)
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
;
179 #endif /* __LINUX_MDIO_H__ */