Something went wrong. Try again.
(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
Something went wrong. Try again.
C
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473474475476477478479480481482483484485486487488489490491492493494495496497498499500501502503504505506507508509510511512513514515516517518519520521522523524525526527528529530531532533534535536537538539540541542543544545546547548549550551552553554555556557558559560561562563564565566567568569570571572573574575576577578579580581582583584585/* 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 (davem@redhat.com) */#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 { 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 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){ 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;}
/** * 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(const unsigned long *advertising){ u32 result = 0;
if (linkmode_test_bit(ETHTOOL_LINK_MODE_10baseT_Half_BIT, advertising)) result |= ADVERTISE_10HALF; if (linkmode_test_bit(ETHTOOL_LINK_MODE_10baseT_Full_BIT, advertising)) result |= ADVERTISE_10FULL; if (linkmode_test_bit(ETHTOOL_LINK_MODE_100baseT_Half_BIT, advertising)) result |= ADVERTISE_100HALF; if (linkmode_test_bit(ETHTOOL_LINK_MODE_100baseT_Full_BIT, advertising)) result |= ADVERTISE_100FULL; if (linkmode_test_bit(ETHTOOL_LINK_MODE_Pause_BIT, advertising)) result |= ADVERTISE_PAUSE_CAP; if (linkmode_test_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT, advertising)) 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;}
/** * 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 u32linkmode_adv_to_mii_ctrl1000_t(const unsigned long *advertising){ u32 result = 0;
if (linkmode_test_bit(ETHTOOL_LINK_MODE_1000baseT_Half_BIT, advertising)) result |= ADVERTISE_1000HALF; if (linkmode_test_bit(ETHTOOL_LINK_MODE_1000baseT_Full_BIT, advertising)) 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;}
/** * 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){ linkmode_mod_bit(ETHTOOL_LINK_MODE_1000baseT_Half_BIT, advertising, lpa & LPA_1000HALF);
linkmode_mod_bit(ETHTOOL_LINK_MODE_1000baseT_Full_BIT, advertising, lpa & LPA_1000FULL);}
/** * 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_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){ linkmode_mod_bit(ETHTOOL_LINK_MODE_10baseT_Half_BIT, advertising, adv & ADVERTISE_10HALF);
linkmode_mod_bit(ETHTOOL_LINK_MODE_10baseT_Full_BIT, advertising, adv & ADVERTISE_10FULL);
linkmode_mod_bit(ETHTOOL_LINK_MODE_100baseT_Half_BIT, advertising, adv & ADVERTISE_100HALF);
linkmode_mod_bit(ETHTOOL_LINK_MODE_100baseT_Full_BIT, advertising, adv & ADVERTISE_100FULL);
linkmode_mod_bit(ETHTOOL_LINK_MODE_Pause_BIT, advertising, adv & ADVERTISE_PAUSE_CAP);
linkmode_mod_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT, advertising, adv & ADVERTISE_PAUSE_ASYM);}
/** * 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){ linkmode_zero(advertising);
mii_adv_mod_linkmode_adv_t(advertising, 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_adv_to_linkmode_adv_t(lp_advertising, lpa);
if (lpa & LPA_LPACK) linkmode_set_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, lp_advertising);
}
/** * 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){ mii_adv_mod_linkmode_adv_t(lp_advertising, lpa);
linkmode_mod_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, lp_advertising, lpa & LPA_LPACK);}
static inline void mii_ctrl1000_mod_linkmode_adv_t(unsigned long *advertising, u32 ctrl1000){ linkmode_mod_bit(ETHTOOL_LINK_MODE_1000baseT_Half_BIT, advertising, ctrl1000 & ADVERTISE_1000HALF); linkmode_mod_bit(ETHTOOL_LINK_MODE_1000baseT_Full_BIT, advertising, ctrl1000 & ADVERTISE_1000FULL);}
/** * 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(const unsigned long *advertising){ u32 lcl_adv = 0;
if (linkmode_test_bit(ETHTOOL_LINK_MODE_Pause_BIT, advertising)) lcl_adv |= ADVERTISE_PAUSE_CAP; if (linkmode_test_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT, advertising)) lcl_adv |= ADVERTISE_PAUSE_ASYM;
return lcl_adv;}
/** * 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_mod_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, linkmodes, lpa & LPA_LPACK); linkmode_mod_bit(ETHTOOL_LINK_MODE_Pause_BIT, linkmodes, lpa & LPA_1000XPAUSE); linkmode_mod_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT, linkmodes, lpa & LPA_1000XPAUSE_ASYM); linkmode_mod_bit(fd_bit, linkmodes, lpa & LPA_1000XFULL);}
/** * 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){ u16 adv = 0;
if (linkmode_test_bit(fd_bit, linkmodes)) adv |= ADVERTISE_1000XFULL; if (linkmode_test_bit(ETHTOOL_LINK_MODE_Pause_BIT, linkmodes)) adv |= ADVERTISE_1000XPAUSE; if (linkmode_test_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT, linkmodes)) adv |= ADVERTISE_1000XPSE_ASYM;
return adv;}
/** * 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;}
/** * 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){ u16 bmcr;
switch (speed) { case SPEED_2500: case SPEED_1000: bmcr = BMCR_SPEED1000; break;
case SPEED_100: bmcr = BMCR_SPEED100; break;
case SPEED_10: default: bmcr = BMCR_SPEED10; break; }
if (duplex == DUPLEX_FULL) bmcr |= BMCR_FULLDPLX;
return bmcr;}
#endif /* __LINUX_MII_H__ */