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TOMOYO Linux Cross Reference
Linux/include/linux/mdio.h

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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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