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 15static 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 20static inline __u16 mdio_phy_id_prtad(int phy_id) 21{ 22 return (phy_id & MDIO_PHY_ID_PRTAD) >> 5; 23} 24 25static 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 */ 44struct 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 62struct ethtool_cmd; 63struct ethtool_pauseparam; 64extern int mdio45_probe(struct mdio_if_info *mdio, int prtad); 65extern int mdio_set_flag(const struct mdio_if_info *mdio, 66 int prtad, int devad, u16 addr, int mask, 67 bool sense); 68extern int mdio45_links_ok(const struct mdio_if_info *mdio, u32 mmds); 69extern int mdio45_nway_restart(const struct mdio_if_info *mdio); 70extern 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 */ 84static 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 90extern 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 */ 100static inline u32 mmd_eee_cap_to_ethtool_sup_t(u16 eee_cap) 101{ 102 u32 supported = 0; 103 104 if (eee_cap & MDIO_EEE_100TX) 105 supported |= SUPPORTED_100baseT_Full; 106 if (eee_cap & MDIO_EEE_1000T) 107 supported |= SUPPORTED_1000baseT_Full; 108 if (eee_cap & MDIO_EEE_10GT) 109 supported |= SUPPORTED_10000baseT_Full; 110 if (eee_cap & MDIO_EEE_1000KX) 111 supported |= SUPPORTED_1000baseKX_Full; 112 if (eee_cap & MDIO_EEE_10GKX4) 113 supported |= SUPPORTED_10000baseKX4_Full; 114 if (eee_cap & MDIO_EEE_10GKR) 115 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 */ 128static inline u32 mmd_eee_adv_to_ethtool_adv_t(u16 eee_adv) 129{ 130 u32 adv = 0; 131 132 if (eee_adv & MDIO_EEE_100TX) 133 adv |= ADVERTISED_100baseT_Full; 134 if (eee_adv & MDIO_EEE_1000T) 135 adv |= ADVERTISED_1000baseT_Full; 136 if (eee_adv & MDIO_EEE_10GT) 137 adv |= ADVERTISED_10000baseT_Full; 138 if (eee_adv & MDIO_EEE_1000KX) 139 adv |= ADVERTISED_1000baseKX_Full; 140 if (eee_adv & MDIO_EEE_10GKX4) 141 adv |= ADVERTISED_10000baseKX4_Full; 142 if (eee_adv & MDIO_EEE_10GKR) 143 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 */ 156static inline u16 ethtool_adv_to_mmd_eee_adv_t(u32 adv) 157{ 158 u16 reg = 0; 159 160 if (adv & ADVERTISED_100baseT_Full) 161 reg |= MDIO_EEE_100TX; 162 if (adv & ADVERTISED_1000baseT_Full) 163 reg |= MDIO_EEE_1000T; 164 if (adv & ADVERTISED_10000baseT_Full) 165 reg |= MDIO_EEE_10GT; 166 if (adv & ADVERTISED_1000baseKX_Full) 167 reg |= MDIO_EEE_1000KX; 168 if (adv & ADVERTISED_10000baseKX4_Full) 169 reg |= MDIO_EEE_10GKX4; 170 if (adv & ADVERTISED_10000baseKR_Full) 171 reg |= MDIO_EEE_10GKR; 172 173 return reg; 174} 175 176#endif /* __LINUX_MDIO_H__ */ 177