/* SPDX-License-Identifier: GPL-2.0 */ /* * linux/mii.h: definitions for MII-compatible transceivers * Originally drivers/net/sunhme.h. * * Copyright (C) 1996, 1999, 2001 David S. Miller ([email protected]) */ #ifndef __LINUX_MII_H__ #define __LINUX_MII_H__ #include <linux/if.h> #include <linux/linkmode.h> #include <uapi/linux/mii.h> struct ethtool_cmd; struct mii_if_info { … }; extern int mii_link_ok (struct mii_if_info *mii); extern int mii_nway_restart (struct mii_if_info *mii); extern void mii_ethtool_gset(struct mii_if_info *mii, struct ethtool_cmd *ecmd); extern void mii_ethtool_get_link_ksettings( struct mii_if_info *mii, struct ethtool_link_ksettings *cmd); extern int mii_ethtool_sset(struct mii_if_info *mii, struct ethtool_cmd *ecmd); extern int mii_ethtool_set_link_ksettings( struct mii_if_info *mii, const struct ethtool_link_ksettings *cmd); extern int mii_check_gmii_support(struct mii_if_info *mii); extern void mii_check_link (struct mii_if_info *mii); extern unsigned int mii_check_media (struct mii_if_info *mii, unsigned int ok_to_print, unsigned int init_media); extern int generic_mii_ioctl(struct mii_if_info *mii_if, struct mii_ioctl_data *mii_data, int cmd, unsigned int *duplex_changed); static inline struct mii_ioctl_data *if_mii(struct ifreq *rq) { … } /** * mii_nway_result * @negotiated: value of MII ANAR and'd with ANLPAR * * Given a set of MII abilities, check each bit and returns the * currently supported media, in the priority order defined by * IEEE 802.3u. We use LPA_xxx constants but note this is not the * value of LPA solely, as described above. * * The one exception to IEEE 802.3u is that 100baseT4 is placed * between 100T-full and 100T-half. If your phy does not support * 100T4 this is fine. If your phy places 100T4 elsewhere in the * priority order, you will need to roll your own function. */ static inline unsigned int mii_nway_result (unsigned int negotiated) { … } /** * mii_duplex * @duplex_lock: Non-zero if duplex is locked at full * @negotiated: value of MII ANAR and'd with ANLPAR * * A small helper function for a common case. Returns one * if the media is operating or locked at full duplex, and * returns zero otherwise. */ static inline unsigned int mii_duplex (unsigned int duplex_lock, unsigned int negotiated) { … } /** * ethtool_adv_to_mii_adv_t * @ethadv: the ethtool advertisement settings * * A small helper function that translates ethtool advertisement * settings to phy autonegotiation advertisements for the * MII_ADVERTISE register. */ static inline u32 ethtool_adv_to_mii_adv_t(u32 ethadv) { … } /** * linkmode_adv_to_mii_adv_t * @advertising: the linkmode advertisement settings * * A small helper function that translates linkmode advertisement * settings to phy autonegotiation advertisements for the * MII_ADVERTISE register. */ static inline u32 linkmode_adv_to_mii_adv_t(unsigned long *advertising) { … } /** * mii_adv_to_ethtool_adv_t * @adv: value of the MII_ADVERTISE register * * A small helper function that translates MII_ADVERTISE bits * to ethtool advertisement settings. */ static inline u32 mii_adv_to_ethtool_adv_t(u32 adv) { … } /** * ethtool_adv_to_mii_ctrl1000_t * @ethadv: the ethtool advertisement settings * * A small helper function that translates ethtool advertisement * settings to phy autonegotiation advertisements for the * MII_CTRL1000 register when in 1000T mode. */ static inline u32 ethtool_adv_to_mii_ctrl1000_t(u32 ethadv) { … } /** * linkmode_adv_to_mii_ctrl1000_t * @advertising: the linkmode advertisement settings * * A small helper function that translates linkmode advertisement * settings to phy autonegotiation advertisements for the * MII_CTRL1000 register when in 1000T mode. */ static inline u32 linkmode_adv_to_mii_ctrl1000_t(unsigned long *advertising) { … } /** * mii_ctrl1000_to_ethtool_adv_t * @adv: value of the MII_CTRL1000 register * * A small helper function that translates MII_CTRL1000 * bits, when in 1000Base-T mode, to ethtool * advertisement settings. */ static inline u32 mii_ctrl1000_to_ethtool_adv_t(u32 adv) { … } /** * mii_lpa_to_ethtool_lpa_t * @adv: value of the MII_LPA register * * A small helper function that translates MII_LPA * bits, when in 1000Base-T mode, to ethtool * LP advertisement settings. */ static inline u32 mii_lpa_to_ethtool_lpa_t(u32 lpa) { … } /** * mii_stat1000_to_ethtool_lpa_t * @adv: value of the MII_STAT1000 register * * A small helper function that translates MII_STAT1000 * bits, when in 1000Base-T mode, to ethtool * advertisement settings. */ static inline u32 mii_stat1000_to_ethtool_lpa_t(u32 lpa) { … } /** * mii_stat1000_mod_linkmode_lpa_t * @advertising: target the linkmode advertisement settings * @adv: value of the MII_STAT1000 register * * A small helper function that translates MII_STAT1000 bits, when in * 1000Base-T mode, to linkmode advertisement settings. Other bits in * advertising are not changes. */ static inline void mii_stat1000_mod_linkmode_lpa_t(unsigned long *advertising, u32 lpa) { … } /** * ethtool_adv_to_mii_adv_x * @ethadv: the ethtool advertisement settings * * A small helper function that translates ethtool advertisement * settings to phy autonegotiation advertisements for the * MII_CTRL1000 register when in 1000Base-X mode. */ static inline u32 ethtool_adv_to_mii_adv_x(u32 ethadv) { … } /** * mii_adv_to_ethtool_adv_x * @adv: value of the MII_CTRL1000 register * * A small helper function that translates MII_CTRL1000 * bits, when in 1000Base-X mode, to ethtool * advertisement settings. */ static inline u32 mii_adv_to_ethtool_adv_x(u32 adv) { … } /** * mii_adv_mod_linkmode_adv_t * @advertising:pointer to destination link mode. * @adv: value of the MII_ADVERTISE register * * A small helper function that translates MII_ADVERTISE bits to * linkmode advertisement settings. Leaves other bits unchanged. */ static inline void mii_adv_mod_linkmode_adv_t(unsigned long *advertising, u32 adv) { … } /** * mii_adv_to_linkmode_adv_t * @advertising:pointer to destination link mode. * @adv: value of the MII_ADVERTISE register * * A small helper function that translates MII_ADVERTISE bits * to linkmode advertisement settings. Clears the old value * of advertising. */ static inline void mii_adv_to_linkmode_adv_t(unsigned long *advertising, u32 adv) { … } /** * mii_lpa_to_linkmode_lpa_t * @adv: value of the MII_LPA register * * A small helper function that translates MII_LPA bits, when in * 1000Base-T mode, to linkmode LP advertisement settings. Clears the * old value of advertising */ static inline void mii_lpa_to_linkmode_lpa_t(unsigned long *lp_advertising, u32 lpa) { … } /** * mii_lpa_mod_linkmode_lpa_t * @adv: value of the MII_LPA register * * A small helper function that translates MII_LPA bits, when in * 1000Base-T mode, to linkmode LP advertisement settings. Leaves * other bits unchanged. */ static inline void mii_lpa_mod_linkmode_lpa_t(unsigned long *lp_advertising, u32 lpa) { … } static inline void mii_ctrl1000_mod_linkmode_adv_t(unsigned long *advertising, u32 ctrl1000) { … } /** * linkmode_adv_to_lcl_adv_t * @advertising:pointer to linkmode advertising * * A small helper function that translates linkmode advertising to LVL * pause capabilities. */ static inline u32 linkmode_adv_to_lcl_adv_t(unsigned long *advertising) { … } /** * mii_lpa_mod_linkmode_x - decode the link partner's config_reg to linkmodes * @linkmodes: link modes array * @lpa: config_reg word from link partner * @fd_bit: link mode for 1000XFULL bit */ static inline void mii_lpa_mod_linkmode_x(unsigned long *linkmodes, u16 lpa, int fd_bit) { … } /** * linkmode_adv_to_mii_adv_x - encode a linkmode to config_reg * @linkmodes: linkmodes * @fd_bit: full duplex bit */ static inline u16 linkmode_adv_to_mii_adv_x(const unsigned long *linkmodes, int fd_bit) { … } /** * mii_advertise_flowctrl - get flow control advertisement flags * @cap: Flow control capabilities (FLOW_CTRL_RX, FLOW_CTRL_TX or both) */ static inline u16 mii_advertise_flowctrl(int cap) { … } /** * mii_resolve_flowctrl_fdx * @lcladv: value of MII ADVERTISE register * @rmtadv: value of MII LPA register * * Resolve full duplex flow control as per IEEE 802.3-2005 table 28B-3 */ static inline u8 mii_resolve_flowctrl_fdx(u16 lcladv, u16 rmtadv) { … } /** * mii_bmcr_encode_fixed - encode fixed speed/duplex settings to a BMCR value * @speed: a SPEED_* value * @duplex: a DUPLEX_* value * * Encode the speed and duplex to a BMCR value. 2500, 1000, 100 and 10 Mbps are * supported. 2500Mbps is encoded to 1000Mbps. Other speeds are encoded as 10 * Mbps. Unknown duplex values are encoded to half-duplex. */ static inline u16 mii_bmcr_encode_fixed(int speed, int duplex) { … } #endif /* __LINUX_MII_H__ */
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