| /* | |
| * linux/mii.h: definitions for MII-compatible transceivers | |
| * Originally drivers/net/sunhme.h. | |
| * | |
| * Copyright (C) 1996, 1999, 2001 David S. Miller (davem@redhat.com) | |
| */ | |
| #ifndef __LINUX_MII_H__ | |
| #define __LINUX_MII_H__ | |
| #include <linux/if.h> | |
| #include <uapi/linux/mii.h> | |
| struct ethtool_cmd; | |
| struct mii_if_info { | |
| int phy_id; | |
| int advertising; | |
| int phy_id_mask; | |
| int reg_num_mask; | |
| unsigned int full_duplex : 1; /* is full duplex? */ | |
| unsigned int force_media : 1; /* is autoneg. disabled? */ | |
| unsigned int supports_gmii : 1; /* are GMII registers supported? */ | |
| struct net_device *dev; | |
| int (*mdio_read) (struct net_device *dev, int phy_id, int location); | |
| void (*mdio_write) (struct net_device *dev, int phy_id, int location, int val); | |
| }; | |
| extern int mii_link_ok (struct mii_if_info *mii); | |
| extern int mii_nway_restart (struct mii_if_info *mii); | |
| extern int mii_ethtool_gset(struct mii_if_info *mii, struct ethtool_cmd *ecmd); | |
| extern int mii_ethtool_sset(struct mii_if_info *mii, struct ethtool_cmd *ecmd); | |
| 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) | |
| { | |
| return (struct mii_ioctl_data *) &rq->ifr_ifru; | |
| } | |
| /** | |
| * 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) | |
| { | |
| unsigned int ret; | |
| if (negotiated & LPA_100FULL) | |
| ret = LPA_100FULL; | |
| else if (negotiated & LPA_100BASE4) | |
| ret = LPA_100BASE4; | |
| else if (negotiated & LPA_100HALF) | |
| ret = LPA_100HALF; | |
| else if (negotiated & LPA_10FULL) | |
| ret = LPA_10FULL; | |
| else | |
| ret = LPA_10HALF; | |
| return ret; | |
| } | |
| /** | |
| * 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) | |
| { | |
| if (duplex_lock) | |
| return 1; | |
| if (mii_nway_result(negotiated) & LPA_DUPLEX) | |
| return 1; | |
| return 0; | |
| } | |
| /** | |
| * 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) | |
| { | |
| u32 result = 0; | |
| if (ethadv & ADVERTISED_10baseT_Half) | |
| result |= ADVERTISE_10HALF; | |
| if (ethadv & ADVERTISED_10baseT_Full) | |
| result |= ADVERTISE_10FULL; | |
| if (ethadv & ADVERTISED_100baseT_Half) | |
| result |= ADVERTISE_100HALF; | |
| if (ethadv & ADVERTISED_100baseT_Full) | |
| result |= ADVERTISE_100FULL; | |
| if (ethadv & ADVERTISED_Pause) | |
| result |= ADVERTISE_PAUSE_CAP; | |
| if (ethadv & ADVERTISED_Asym_Pause) | |
| result |= ADVERTISE_PAUSE_ASYM; | |
| return result; | |
| } | |
| /** | |
| * 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) | |
| { | |
| u32 result = 0; | |
| if (adv & ADVERTISE_10HALF) | |
| result |= ADVERTISED_10baseT_Half; | |
| if (adv & ADVERTISE_10FULL) | |
| result |= ADVERTISED_10baseT_Full; | |
| if (adv & ADVERTISE_100HALF) | |
| result |= ADVERTISED_100baseT_Half; | |
| if (adv & ADVERTISE_100FULL) | |
| result |= ADVERTISED_100baseT_Full; | |
| if (adv & ADVERTISE_PAUSE_CAP) | |
| result |= ADVERTISED_Pause; | |
| if (adv & ADVERTISE_PAUSE_ASYM) | |
| result |= ADVERTISED_Asym_Pause; | |
| return result; | |
| } | |
| /** | |
| * 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) | |
| { | |
| u32 result = 0; | |
| if (ethadv & ADVERTISED_1000baseT_Half) | |
| result |= ADVERTISE_1000HALF; | |
| if (ethadv & ADVERTISED_1000baseT_Full) | |
| result |= ADVERTISE_1000FULL; | |
| return result; | |
| } | |
| /** | |
| * 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) | |
| { | |
| u32 result = 0; | |
| if (adv & ADVERTISE_1000HALF) | |
| result |= ADVERTISED_1000baseT_Half; | |
| if (adv & ADVERTISE_1000FULL) | |
| result |= ADVERTISED_1000baseT_Full; | |
| return result; | |
| } | |
| /** | |
| * 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) | |
| { | |
| u32 result = 0; | |
| if (lpa & LPA_LPACK) | |
| result |= ADVERTISED_Autoneg; | |
| return result | mii_adv_to_ethtool_adv_t(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) | |
| { | |
| u32 result = 0; | |
| if (lpa & LPA_1000HALF) | |
| result |= ADVERTISED_1000baseT_Half; | |
| if (lpa & LPA_1000FULL) | |
| result |= ADVERTISED_1000baseT_Full; | |
| return result; | |
| } | |
| /** | |
| * 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) | |
| { | |
| u32 result = 0; | |
| if (ethadv & ADVERTISED_1000baseT_Half) | |
| result |= ADVERTISE_1000XHALF; | |
| if (ethadv & ADVERTISED_1000baseT_Full) | |
| result |= ADVERTISE_1000XFULL; | |
| if (ethadv & ADVERTISED_Pause) | |
| result |= ADVERTISE_1000XPAUSE; | |
| if (ethadv & ADVERTISED_Asym_Pause) | |
| result |= ADVERTISE_1000XPSE_ASYM; | |
| return result; | |
| } | |
| /** | |
| * 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) | |
| { | |
| u32 result = 0; | |
| if (adv & ADVERTISE_1000XHALF) | |
| result |= ADVERTISED_1000baseT_Half; | |
| if (adv & ADVERTISE_1000XFULL) | |
| result |= ADVERTISED_1000baseT_Full; | |
| if (adv & ADVERTISE_1000XPAUSE) | |
| result |= ADVERTISED_Pause; | |
| if (adv & ADVERTISE_1000XPSE_ASYM) | |
| result |= ADVERTISED_Asym_Pause; | |
| return result; | |
| } | |
| /** | |
| * mii_lpa_to_ethtool_lpa_x | |
| * @adv: value of the MII_LPA register | |
| * | |
| * A small helper function that translates MII_LPA | |
| * bits, when in 1000Base-X mode, to ethtool | |
| * LP advertisement settings. | |
| */ | |
| static inline u32 mii_lpa_to_ethtool_lpa_x(u32 lpa) | |
| { | |
| u32 result = 0; | |
| if (lpa & LPA_LPACK) | |
| result |= ADVERTISED_Autoneg; | |
| return result | mii_adv_to_ethtool_adv_x(lpa); | |
| } | |
| /** | |
| * 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) | |
| { | |
| u16 adv = 0; | |
| if (cap & FLOW_CTRL_RX) | |
| adv = ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM; | |
| if (cap & FLOW_CTRL_TX) | |
| adv ^= ADVERTISE_PAUSE_ASYM; | |
| return adv; | |
| } | |
| /** | |
| * 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) | |
| { | |
| u8 cap = 0; | |
| if (lcladv & rmtadv & ADVERTISE_PAUSE_CAP) { | |
| cap = FLOW_CTRL_TX | FLOW_CTRL_RX; | |
| } else if (lcladv & rmtadv & ADVERTISE_PAUSE_ASYM) { | |
| if (lcladv & ADVERTISE_PAUSE_CAP) | |
| cap = FLOW_CTRL_RX; | |
| else if (rmtadv & ADVERTISE_PAUSE_CAP) | |
| cap = FLOW_CTRL_TX; | |
| } | |
| return cap; | |
| } | |
| #endif /* __LINUX_MII_H__ */ |