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include/linux/mii.h
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/* SPDX-License-Identifier: GPL-2.0 */ |
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/* * linux/mii.h: definitions for MII-compatible transceivers * Originally drivers/net/sunhme.h. * * Copyright (C) 1996, 1999, 2001 David S. Miller (davem@redhat.com) */ |
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#ifndef __LINUX_MII_H__ #define __LINUX_MII_H__ |
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#include <linux/if.h> |
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#include <linux/linkmode.h> |
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#include <uapi/linux/mii.h> |
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struct ethtool_cmd; |
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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); }; |
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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); |
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extern void mii_ethtool_get_link_ksettings( |
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struct mii_if_info *mii, struct ethtool_link_ksettings *cmd); |
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extern int mii_ethtool_sset(struct mii_if_info *mii, struct ethtool_cmd *ecmd); |
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extern int mii_ethtool_set_link_ksettings( struct mii_if_info *mii, const struct ethtool_link_ksettings *cmd); |
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extern int mii_check_gmii_support(struct mii_if_info *mii); |
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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, |
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struct mii_ioctl_data *mii_data, int cmd, |
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unsigned int *duplex_changed); |
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static inline struct mii_ioctl_data *if_mii(struct ifreq *rq) { return (struct mii_ioctl_data *) &rq->ifr_ifru; } |
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/** * 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; } |
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/** |
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* ethtool_adv_to_mii_adv_t |
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* @ethadv: the ethtool advertisement settings * * A small helper function that translates ethtool advertisement * settings to phy autonegotiation advertisements for the * MII_ADVERTISE register. */ |
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static inline u32 ethtool_adv_to_mii_adv_t(u32 ethadv) |
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{ 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; } /** |
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* 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) { 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; } /** |
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* mii_adv_to_ethtool_adv_t |
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* @adv: value of the MII_ADVERTISE register * * A small helper function that translates MII_ADVERTISE bits * to ethtool advertisement settings. */ |
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static inline u32 mii_adv_to_ethtool_adv_t(u32 adv) |
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{ 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; } /** |
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* ethtool_adv_to_mii_ctrl1000_t |
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* @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. */ |
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static inline u32 ethtool_adv_to_mii_ctrl1000_t(u32 ethadv) |
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{ u32 result = 0; if (ethadv & ADVERTISED_1000baseT_Half) result |= ADVERTISE_1000HALF; if (ethadv & ADVERTISED_1000baseT_Full) result |= ADVERTISE_1000FULL; return result; } /** |
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* linkmode_adv_to_mii_ctrl1000_t |
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* @advertising: the linkmode advertisement settings |
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* * 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) { 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; } /** |
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* mii_ctrl1000_to_ethtool_adv_t |
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* @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. */ |
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static inline u32 mii_ctrl1000_to_ethtool_adv_t(u32 adv) |
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{ u32 result = 0; if (adv & ADVERTISE_1000HALF) result |= ADVERTISED_1000baseT_Half; if (adv & ADVERTISE_1000FULL) result |= ADVERTISED_1000baseT_Full; return result; } |
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/** * 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); } |
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/** |
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* mii_stat1000_to_ethtool_lpa_t |
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* @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. */ |
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static inline u32 mii_stat1000_to_ethtool_lpa_t(u32 lpa) |
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{ u32 result = 0; if (lpa & LPA_1000HALF) result |= ADVERTISED_1000baseT_Half; if (lpa & LPA_1000FULL) result |= ADVERTISED_1000baseT_Full; return result; } /** |
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* mii_stat1000_mod_linkmode_lpa_t |
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* @advertising: target the linkmode advertisement settings * @adv: value of the MII_STAT1000 register * * A small helper function that translates MII_STAT1000 bits, when in |
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* 1000Base-T mode, to linkmode advertisement settings. Other bits in * advertising are not changes. |
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*/ |
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static inline void mii_stat1000_mod_linkmode_lpa_t(unsigned long *advertising, u32 lpa) |
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{ |
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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); |
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} /** |
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* ethtool_adv_to_mii_adv_x |
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* @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. */ |
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static inline u32 ethtool_adv_to_mii_adv_x(u32 ethadv) |
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{ 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; } /** |
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* mii_adv_to_ethtool_adv_x |
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* @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. */ |
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static inline u32 mii_adv_to_ethtool_adv_x(u32 adv) |
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{ 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; } /** |
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* mii_lpa_mod_linkmode_adv_sgmii * @lp_advertising: pointer to destination link mode. * @lpa: value of the MII_LPA register * * A small helper function that translates MII_LPA bits to * linkmode advertisement settings for SGMII. * Leaves other bits unchanged. */ static inline void mii_lpa_mod_linkmode_lpa_sgmii(unsigned long *lp_advertising, u32 lpa) { u32 speed_duplex = lpa & LPA_SGMII_DPX_SPD_MASK; linkmode_mod_bit(ETHTOOL_LINK_MODE_1000baseT_Half_BIT, lp_advertising, speed_duplex == LPA_SGMII_1000HALF); linkmode_mod_bit(ETHTOOL_LINK_MODE_1000baseT_Full_BIT, lp_advertising, speed_duplex == LPA_SGMII_1000FULL); linkmode_mod_bit(ETHTOOL_LINK_MODE_100baseT_Half_BIT, lp_advertising, speed_duplex == LPA_SGMII_100HALF); linkmode_mod_bit(ETHTOOL_LINK_MODE_100baseT_Full_BIT, lp_advertising, speed_duplex == LPA_SGMII_100FULL); linkmode_mod_bit(ETHTOOL_LINK_MODE_10baseT_Half_BIT, lp_advertising, speed_duplex == LPA_SGMII_10HALF); linkmode_mod_bit(ETHTOOL_LINK_MODE_10baseT_Full_BIT, lp_advertising, speed_duplex == LPA_SGMII_10FULL); } /** * mii_lpa_to_linkmode_adv_sgmii * @advertising: pointer to destination link mode. * @lpa: value of the MII_LPA register * * A small helper function that translates MII_ADVERTISE bits * to linkmode advertisement settings when in SGMII mode. * Clears the old value of advertising. */ static inline void mii_lpa_to_linkmode_lpa_sgmii(unsigned long *lp_advertising, u32 lpa) { linkmode_zero(lp_advertising); mii_lpa_mod_linkmode_lpa_sgmii(lp_advertising, lpa); } /** |
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* 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); } /** |
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* 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 |
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* to linkmode advertisement settings. Clears the old value * of advertising. |
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*/ static inline void mii_adv_to_linkmode_adv_t(unsigned long *advertising, u32 adv) { linkmode_zero(advertising); |
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mii_adv_mod_linkmode_adv_t(advertising, adv); |
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} /** |
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* mii_lpa_to_linkmode_lpa_t * @adv: value of the MII_LPA register * * A small helper function that translates MII_LPA bits, when in |
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* 1000Base-T mode, to linkmode LP advertisement settings. Clears the * old value of advertising |
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*/ static inline void mii_lpa_to_linkmode_lpa_t(unsigned long *lp_advertising, u32 lpa) { |
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mii_adv_to_linkmode_adv_t(lp_advertising, lpa); |
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if (lpa & LPA_LPACK) linkmode_set_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, lp_advertising); |
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} /** |
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* 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); |
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linkmode_mod_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, lp_advertising, lpa & LPA_LPACK); |
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} |
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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); } |
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/** |
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* linkmode_adv_to_lcl_adv_t * @advertising:pointer to linkmode advertising |
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* |
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* A small helper function that translates linkmode advertising to LVL |
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* pause capabilities. */ |
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static inline u32 linkmode_adv_to_lcl_adv_t(unsigned long *advertising) |
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{ u32 lcl_adv = 0; |
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if (linkmode_test_bit(ETHTOOL_LINK_MODE_Pause_BIT, advertising)) |
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lcl_adv |= ADVERTISE_PAUSE_CAP; |
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if (linkmode_test_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT, |
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advertising)) |
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lcl_adv |= ADVERTISE_PAUSE_ASYM; return lcl_adv; } /** |
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* 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); } /** |
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* 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; } /** |
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* 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; } /** |
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* 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; |
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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) |
bc02ff95f net: Refactor ful... |
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cap = FLOW_CTRL_TX; } return cap; } |
1da177e4c Linux-2.6.12-rc2 |
581 |
#endif /* __LINUX_MII_H__ */ |