[mirror_ubuntu-jammy-kernel.git] / include / linux / mii.h

/* 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 int 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(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 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;
}

/**
 * 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_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);
}

/**
 * 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(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;
}

#endif /* __LINUX_MII_H__ */
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
1da177e4 LT	2	/*
	3	* linux/mii.h: definitions for MII-compatible transceivers
	4	* Originally drivers/net/sunhme.h.
	5	*
	6	* Copyright (C) 1996, 1999, 2001 David S. Miller (davem@redhat.com)
	7	*/
1da177e4 LT	8	#ifndef __LINUX_MII_H__
	9	#define __LINUX_MII_H__
	10
c3ce7e20 DW	11
c3ce7e20 DW	12	#include <linux/if.h>
b31cdffa	13	#include <linux/linkmode.h>
607ca46e	14	#include <uapi/linux/mii.h>
c3ce7e20 DW	15
	16	struct ethtool_cmd;
	17
1da177e4 LT	18	struct mii_if_info {
	19	int phy_id;
	20	int advertising;
	21	int phy_id_mask;
	22	int reg_num_mask;
	23
	24	unsigned int full_duplex : 1; /* is full duplex? */
	25	unsigned int force_media : 1; /* is autoneg. disabled? */
	26	unsigned int supports_gmii : 1; /* are GMII registers supported? */
	27
	28	struct net_device *dev;
	29	int (mdio_read) (struct net_device dev, int phy_id, int location);
	30	void (mdio_write) (struct net_device dev, int phy_id, int location, int val);
	31	};
	32
1da177e4 LT	33	extern int mii_link_ok (struct mii_if_info *mii);
	34	extern int mii_nway_restart (struct mii_if_info *mii);
	35	extern int mii_ethtool_gset(struct mii_if_info mii, struct ethtool_cmd ecmd);
82c01a84	36	extern void mii_ethtool_get_link_ksettings(
bc8ee596	37	struct mii_if_info mii, struct ethtool_link_ksettings cmd);
1da177e4	38	extern int mii_ethtool_sset(struct mii_if_info mii, struct ethtool_cmd ecmd);
bc8ee596 PR	39	extern int mii_ethtool_set_link_ksettings(
bc8ee596 PR	40	struct mii_if_info mii, const struct ethtool_link_ksettings cmd);
43ec6e95	41	extern int mii_check_gmii_support(struct mii_if_info *mii);
1da177e4 LT	42	extern void mii_check_link (struct mii_if_info *mii);
	43	extern unsigned int mii_check_media (struct mii_if_info *mii,
	44	unsigned int ok_to_print,
	45	unsigned int init_media);
	46	extern int generic_mii_ioctl(struct mii_if_info *mii_if,
c44f7eb4	47	struct mii_ioctl_data *mii_data, int cmd,
1da177e4 LT	48	unsigned int *duplex_changed);
	49
	50
1da177e4 LT	51	static inline struct mii_ioctl_data if_mii(struct ifreq rq)
	52	{
	53	return (struct mii_ioctl_data *) &rq->ifr_ifru;
	54	}
	55
1da177e4 LT	56	/**
	57	* mii_nway_result
	58	* @negotiated: value of MII ANAR and'd with ANLPAR
	59	*
	60	* Given a set of MII abilities, check each bit and returns the
	61	* currently supported media, in the priority order defined by
	62	* IEEE 802.3u. We use LPA_xxx constants but note this is not the
	63	* value of LPA solely, as described above.
	64	*
	65	* The one exception to IEEE 802.3u is that 100baseT4 is placed
	66	* between 100T-full and 100T-half. If your phy does not support
	67	* 100T4 this is fine. If your phy places 100T4 elsewhere in the
	68	* priority order, you will need to roll your own function.
	69	*/
	70	static inline unsigned int mii_nway_result (unsigned int negotiated)
	71	{
	72	unsigned int ret;
	73
	74	if (negotiated & LPA_100FULL)
	75	ret = LPA_100FULL;
	76	else if (negotiated & LPA_100BASE4)
	77	ret = LPA_100BASE4;
	78	else if (negotiated & LPA_100HALF)
	79	ret = LPA_100HALF;
	80	else if (negotiated & LPA_10FULL)
	81	ret = LPA_10FULL;
	82	else
	83	ret = LPA_10HALF;
	84
	85	return ret;
	86	}
	87
	88	/**
	89	* mii_duplex
	90	* @duplex_lock: Non-zero if duplex is locked at full
	91	* @negotiated: value of MII ANAR and'd with ANLPAR
	92	*
	93	* A small helper function for a common case. Returns one
	94	* if the media is operating or locked at full duplex, and
	95	* returns zero otherwise.
	96	*/
	97	static inline unsigned int mii_duplex (unsigned int duplex_lock,
	98	unsigned int negotiated)
	99	{
	100	if (duplex_lock)
	101	return 1;
	102	if (mii_nway_result(negotiated) & LPA_DUPLEX)
	103	return 1;
	104	return 0;
	105	}
	106
28011cf1	107	/**
37f07023	108	* ethtool_adv_to_mii_adv_t
28011cf1 MC	109	* @ethadv: the ethtool advertisement settings
	110	*
	111	* A small helper function that translates ethtool advertisement
	112	* settings to phy autonegotiation advertisements for the
	113	* MII_ADVERTISE register.
	114	*/
37f07023	115	static inline u32 ethtool_adv_to_mii_adv_t(u32 ethadv)
28011cf1 MC	116	{
	117	u32 result = 0;
	118
	119	if (ethadv & ADVERTISED_10baseT_Half)
	120	result \|= ADVERTISE_10HALF;
	121	if (ethadv & ADVERTISED_10baseT_Full)
	122	result \|= ADVERTISE_10FULL;
	123	if (ethadv & ADVERTISED_100baseT_Half)
	124	result \|= ADVERTISE_100HALF;
	125	if (ethadv & ADVERTISED_100baseT_Full)
	126	result \|= ADVERTISE_100FULL;
	127	if (ethadv & ADVERTISED_Pause)
	128	result \|= ADVERTISE_PAUSE_CAP;
	129	if (ethadv & ADVERTISED_Asym_Pause)
	130	result \|= ADVERTISE_PAUSE_ASYM;
	131
	132	return result;
	133	}
	134
f954a04e AL	135	/**
	136	* linkmode_adv_to_mii_adv_t
	137	* @advertising: the linkmode advertisement settings
	138	*
	139	* A small helper function that translates linkmode advertisement
	140	* settings to phy autonegotiation advertisements for the
	141	* MII_ADVERTISE register.
	142	*/
	143	static inline u32 linkmode_adv_to_mii_adv_t(unsigned long *advertising)
	144	{
	145	u32 result = 0;
	146
	147	if (linkmode_test_bit(ETHTOOL_LINK_MODE_10baseT_Half_BIT, advertising))
	148	result \|= ADVERTISE_10HALF;
	149	if (linkmode_test_bit(ETHTOOL_LINK_MODE_10baseT_Full_BIT, advertising))
	150	result \|= ADVERTISE_10FULL;
	151	if (linkmode_test_bit(ETHTOOL_LINK_MODE_100baseT_Half_BIT, advertising))
	152	result \|= ADVERTISE_100HALF;
	153	if (linkmode_test_bit(ETHTOOL_LINK_MODE_100baseT_Full_BIT, advertising))
	154	result \|= ADVERTISE_100FULL;
	155	if (linkmode_test_bit(ETHTOOL_LINK_MODE_Pause_BIT, advertising))
	156	result \|= ADVERTISE_PAUSE_CAP;
	157	if (linkmode_test_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT, advertising))
	158	result \|= ADVERTISE_PAUSE_ASYM;
	159
	160	return result;
	161	}
	162
28011cf1	163	/**
37f07023	164	* mii_adv_to_ethtool_adv_t
28011cf1 MC	165	* @adv: value of the MII_ADVERTISE register
	166	*
	167	* A small helper function that translates MII_ADVERTISE bits
	168	* to ethtool advertisement settings.
	169	*/
37f07023	170	static inline u32 mii_adv_to_ethtool_adv_t(u32 adv)
28011cf1 MC	171	{
	172	u32 result = 0;
	173
	174	if (adv & ADVERTISE_10HALF)
	175	result \|= ADVERTISED_10baseT_Half;
	176	if (adv & ADVERTISE_10FULL)
	177	result \|= ADVERTISED_10baseT_Full;
	178	if (adv & ADVERTISE_100HALF)
	179	result \|= ADVERTISED_100baseT_Half;
	180	if (adv & ADVERTISE_100FULL)
	181	result \|= ADVERTISED_100baseT_Full;
	182	if (adv & ADVERTISE_PAUSE_CAP)
	183	result \|= ADVERTISED_Pause;
	184	if (adv & ADVERTISE_PAUSE_ASYM)
	185	result \|= ADVERTISED_Asym_Pause;
	186
	187	return result;
	188	}
	189
	190	/**
37f07023	191	* ethtool_adv_to_mii_ctrl1000_t
28011cf1 MC	192	* @ethadv: the ethtool advertisement settings
	193	*
	194	* A small helper function that translates ethtool advertisement
	195	* settings to phy autonegotiation advertisements for the
	196	* MII_CTRL1000 register when in 1000T mode.
	197	*/
37f07023	198	static inline u32 ethtool_adv_to_mii_ctrl1000_t(u32 ethadv)
28011cf1 MC	199	{
	200	u32 result = 0;
	201
	202	if (ethadv & ADVERTISED_1000baseT_Half)
	203	result \|= ADVERTISE_1000HALF;
	204	if (ethadv & ADVERTISED_1000baseT_Full)
	205	result \|= ADVERTISE_1000FULL;
	206
	207	return result;
	208	}
	209
f954a04e AL	210	/**
f954a04e AL	211	* linkmode_adv_to_mii_ctrl1000_t
fe191914	212	* @advertising: the linkmode advertisement settings
f954a04e AL	213	*
	214	* A small helper function that translates linkmode advertisement
	215	* settings to phy autonegotiation advertisements for the
	216	* MII_CTRL1000 register when in 1000T mode.
	217	*/
	218	static inline u32 linkmode_adv_to_mii_ctrl1000_t(unsigned long *advertising)
	219	{
	220	u32 result = 0;
	221
	222	if (linkmode_test_bit(ETHTOOL_LINK_MODE_1000baseT_Half_BIT,
	223	advertising))
	224	result \|= ADVERTISE_1000HALF;
	225	if (linkmode_test_bit(ETHTOOL_LINK_MODE_1000baseT_Full_BIT,
	226	advertising))
	227	result \|= ADVERTISE_1000FULL;
	228
	229	return result;
	230	}
	231
28011cf1	232	/**
37f07023	233	* mii_ctrl1000_to_ethtool_adv_t
28011cf1 MC	234	* @adv: value of the MII_CTRL1000 register
	235	*
	236	* A small helper function that translates MII_CTRL1000
	237	* bits, when in 1000Base-T mode, to ethtool
	238	* advertisement settings.
	239	*/
37f07023	240	static inline u32 mii_ctrl1000_to_ethtool_adv_t(u32 adv)
28011cf1 MC	241	{
	242	u32 result = 0;
	243
	244	if (adv & ADVERTISE_1000HALF)
	245	result \|= ADVERTISED_1000baseT_Half;
	246	if (adv & ADVERTISE_1000FULL)
	247	result \|= ADVERTISED_1000baseT_Full;
	248
	249	return result;
	250	}
	251
37f07023 MC	252	/**
	253	* mii_lpa_to_ethtool_lpa_t
	254	* @adv: value of the MII_LPA register
	255	*
	256	* A small helper function that translates MII_LPA
	257	* bits, when in 1000Base-T mode, to ethtool
	258	* LP advertisement settings.
	259	*/
	260	static inline u32 mii_lpa_to_ethtool_lpa_t(u32 lpa)
	261	{
	262	u32 result = 0;
	263
	264	if (lpa & LPA_LPACK)
	265	result \|= ADVERTISED_Autoneg;
	266
	267	return result \| mii_adv_to_ethtool_adv_t(lpa);
	268	}
28011cf1 MC	269
28011cf1 MC	270	/**
37f07023	271	* mii_stat1000_to_ethtool_lpa_t
28011cf1 MC	272	* @adv: value of the MII_STAT1000 register
	273	*
	274	* A small helper function that translates MII_STAT1000
	275	* bits, when in 1000Base-T mode, to ethtool
	276	* advertisement settings.
	277	*/
37f07023	278	static inline u32 mii_stat1000_to_ethtool_lpa_t(u32 lpa)
28011cf1 MC	279	{
	280	u32 result = 0;
	281
	282	if (lpa & LPA_1000HALF)
	283	result \|= ADVERTISED_1000baseT_Half;
	284	if (lpa & LPA_1000FULL)
	285	result \|= ADVERTISED_1000baseT_Full;
	286
	287	return result;
	288	}
	289
c0ec3c27	290	/**
78a24df3	291	* mii_stat1000_mod_linkmode_lpa_t
c0ec3c27 AL	292	* @advertising: target the linkmode advertisement settings
	293	* @adv: value of the MII_STAT1000 register
	294	*
	295	* A small helper function that translates MII_STAT1000 bits, when in
78a24df3 AL	296	* 1000Base-T mode, to linkmode advertisement settings. Other bits in
78a24df3 AL	297	* advertising are not changes.
c0ec3c27	298	*/
78a24df3 AL	299	static inline void mii_stat1000_mod_linkmode_lpa_t(unsigned long *advertising,
78a24df3 AL	300	u32 lpa)
c0ec3c27	301	{
78a24df3 AL	302	linkmode_mod_bit(ETHTOOL_LINK_MODE_1000baseT_Half_BIT,
	303	advertising, lpa & LPA_1000HALF);
	304
	305	linkmode_mod_bit(ETHTOOL_LINK_MODE_1000baseT_Full_BIT,
	306	advertising, lpa & LPA_1000FULL);
c0ec3c27 AL	307	}
c0ec3c27 AL	308
28011cf1	309	/**
37f07023	310	* ethtool_adv_to_mii_adv_x
28011cf1 MC	311	* @ethadv: the ethtool advertisement settings
	312	*
	313	* A small helper function that translates ethtool advertisement
	314	* settings to phy autonegotiation advertisements for the
	315	* MII_CTRL1000 register when in 1000Base-X mode.
	316	*/
37f07023	317	static inline u32 ethtool_adv_to_mii_adv_x(u32 ethadv)
28011cf1 MC	318	{
	319	u32 result = 0;
	320
	321	if (ethadv & ADVERTISED_1000baseT_Half)
	322	result \|= ADVERTISE_1000XHALF;
	323	if (ethadv & ADVERTISED_1000baseT_Full)
	324	result \|= ADVERTISE_1000XFULL;
	325	if (ethadv & ADVERTISED_Pause)
	326	result \|= ADVERTISE_1000XPAUSE;
	327	if (ethadv & ADVERTISED_Asym_Pause)
	328	result \|= ADVERTISE_1000XPSE_ASYM;
	329
	330	return result;
	331	}
	332
	333	/**
37f07023	334	* mii_adv_to_ethtool_adv_x
28011cf1 MC	335	* @adv: value of the MII_CTRL1000 register
	336	*
	337	* A small helper function that translates MII_CTRL1000
	338	* bits, when in 1000Base-X mode, to ethtool
	339	* advertisement settings.
	340	*/
37f07023	341	static inline u32 mii_adv_to_ethtool_adv_x(u32 adv)
28011cf1 MC	342	{
	343	u32 result = 0;
	344
	345	if (adv & ADVERTISE_1000XHALF)
	346	result \|= ADVERTISED_1000baseT_Half;
	347	if (adv & ADVERTISE_1000XFULL)
	348	result \|= ADVERTISED_1000baseT_Full;
	349	if (adv & ADVERTISE_1000XPAUSE)
	350	result \|= ADVERTISED_Pause;
	351	if (adv & ADVERTISE_1000XPSE_ASYM)
	352	result \|= ADVERTISED_Asym_Pause;
	353
	354	return result;
	355	}
	356
6c930994 VO	357	/**
	358	* mii_lpa_mod_linkmode_adv_sgmii
	359	* @lp_advertising: pointer to destination link mode.
	360	* @lpa: value of the MII_LPA register
	361	*
	362	* A small helper function that translates MII_LPA bits to
	363	* linkmode advertisement settings for SGMII.
	364	* Leaves other bits unchanged.
	365	*/
	366	static inline void
	367	mii_lpa_mod_linkmode_lpa_sgmii(unsigned long *lp_advertising, u32 lpa)
	368	{
	369	u32 speed_duplex = lpa & LPA_SGMII_DPX_SPD_MASK;
	370
	371	linkmode_mod_bit(ETHTOOL_LINK_MODE_1000baseT_Half_BIT, lp_advertising,
	372	speed_duplex == LPA_SGMII_1000HALF);
	373
	374	linkmode_mod_bit(ETHTOOL_LINK_MODE_1000baseT_Full_BIT, lp_advertising,
	375	speed_duplex == LPA_SGMII_1000FULL);
	376
	377	linkmode_mod_bit(ETHTOOL_LINK_MODE_100baseT_Half_BIT, lp_advertising,
	378	speed_duplex == LPA_SGMII_100HALF);
	379
	380	linkmode_mod_bit(ETHTOOL_LINK_MODE_100baseT_Full_BIT, lp_advertising,
	381	speed_duplex == LPA_SGMII_100FULL);
	382
	383	linkmode_mod_bit(ETHTOOL_LINK_MODE_10baseT_Half_BIT, lp_advertising,
	384	speed_duplex == LPA_SGMII_10HALF);
	385
	386	linkmode_mod_bit(ETHTOOL_LINK_MODE_10baseT_Full_BIT, lp_advertising,
	387	speed_duplex == LPA_SGMII_10FULL);
	388	}
	389
	390	/**
	391	* mii_lpa_to_linkmode_adv_sgmii
	392	* @advertising: pointer to destination link mode.
	393	* @lpa: value of the MII_LPA register
	394	*
	395	* A small helper function that translates MII_ADVERTISE bits
	396	* to linkmode advertisement settings when in SGMII mode.
	397	* Clears the old value of advertising.
	398	*/
	399	static inline void mii_lpa_to_linkmode_lpa_sgmii(unsigned long *lp_advertising,
	400	u32 lpa)
	401	{
	402	linkmode_zero(lp_advertising);
	403
	404	mii_lpa_mod_linkmode_lpa_sgmii(lp_advertising, lpa);
	405	}
	406
d3351931 AL	407	/**
	408	* mii_adv_mod_linkmode_adv_t
	409	* @advertising:pointer to destination link mode.
	410	* @adv: value of the MII_ADVERTISE register
	411	*
	412	* A small helper function that translates MII_ADVERTISE bits to
	413	* linkmode advertisement settings. Leaves other bits unchanged.
	414	*/
	415	static inline void mii_adv_mod_linkmode_adv_t(unsigned long *advertising,
	416	u32 adv)
	417	{
	418	linkmode_mod_bit(ETHTOOL_LINK_MODE_10baseT_Half_BIT,
	419	advertising, adv & ADVERTISE_10HALF);
	420
	421	linkmode_mod_bit(ETHTOOL_LINK_MODE_10baseT_Full_BIT,
	422	advertising, adv & ADVERTISE_10FULL);
	423
	424	linkmode_mod_bit(ETHTOOL_LINK_MODE_100baseT_Half_BIT,
	425	advertising, adv & ADVERTISE_100HALF);
	426
	427	linkmode_mod_bit(ETHTOOL_LINK_MODE_100baseT_Full_BIT,
	428	advertising, adv & ADVERTISE_100FULL);
	429
	430	linkmode_mod_bit(ETHTOOL_LINK_MODE_Pause_BIT, advertising,
	431	adv & ADVERTISE_PAUSE_CAP);
	432
	433	linkmode_mod_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT,
	434	advertising, adv & ADVERTISE_PAUSE_ASYM);
	435	}
	436
edc7ccbb AL	437	/**
	438	* mii_adv_to_linkmode_adv_t
	439	* @advertising:pointer to destination link mode.
	440	* @adv: value of the MII_ADVERTISE register
	441	*
	442	* A small helper function that translates MII_ADVERTISE bits
5f15eed2 AL	443	* to linkmode advertisement settings. Clears the old value
5f15eed2 AL	444	* of advertising.
edc7ccbb AL	445	*/
	446	static inline void mii_adv_to_linkmode_adv_t(unsigned long *advertising,
	447	u32 adv)
	448	{
	449	linkmode_zero(advertising);
	450
d3351931	451	mii_adv_mod_linkmode_adv_t(advertising, adv);
edc7ccbb AL	452	}
edc7ccbb AL	453
c0ec3c27 AL	454	/**
	455	* mii_lpa_to_linkmode_lpa_t
	456	* @adv: value of the MII_LPA register
	457	*
	458	* A small helper function that translates MII_LPA bits, when in
5f15eed2 AL	459	* 1000Base-T mode, to linkmode LP advertisement settings. Clears the
5f15eed2 AL	460	* old value of advertising
c0ec3c27 AL	461	*/
	462	static inline void mii_lpa_to_linkmode_lpa_t(unsigned long *lp_advertising,
	463	u32 lpa)
	464	{
5f15eed2 AL	465	mii_adv_to_linkmode_adv_t(lp_advertising, lpa);
5f15eed2 AL	466
c0ec3c27 AL	467	if (lpa & LPA_LPACK)
	468	linkmode_set_bit(ETHTOOL_LINK_MODE_Autoneg_BIT,
	469	lp_advertising);
	470
c0ec3c27 AL	471	}
c0ec3c27 AL	472
d3351931 AL	473	/**
	474	* mii_lpa_mod_linkmode_lpa_t
	475	* @adv: value of the MII_LPA register
	476	*
	477	* A small helper function that translates MII_LPA bits, when in
	478	* 1000Base-T mode, to linkmode LP advertisement settings. Leaves
	479	* other bits unchanged.
	480	*/
	481	static inline void mii_lpa_mod_linkmode_lpa_t(unsigned long *lp_advertising,
	482	u32 lpa)
	483	{
	484	mii_adv_mod_linkmode_adv_t(lp_advertising, lpa);
	485
6dbd0090 AL	486	linkmode_mod_bit(ETHTOOL_LINK_MODE_Autoneg_BIT,
6dbd0090 AL	487	lp_advertising, lpa & LPA_LPACK);
d3351931 AL	488	}
d3351931 AL	489
4cf6c57e RK	490	static inline void mii_ctrl1000_mod_linkmode_adv_t(unsigned long *advertising,
	491	u32 ctrl1000)
	492	{
	493	linkmode_mod_bit(ETHTOOL_LINK_MODE_1000baseT_Half_BIT, advertising,
	494	ctrl1000 & ADVERTISE_1000HALF);
	495	linkmode_mod_bit(ETHTOOL_LINK_MODE_1000baseT_Full_BIT, advertising,
	496	ctrl1000 & ADVERTISE_1000FULL);
	497	}
	498
5f991f7b	499	/**
3c1bcc86 AL	500	* linkmode_adv_to_lcl_adv_t
3c1bcc86 AL	501	* @advertising:pointer to linkmode advertising
5f991f7b	502	*
3c1bcc86	503	* A small helper function that translates linkmode advertising to LVL
5f991f7b AL	504	* pause capabilities.
5f991f7b AL	505	*/
3c1bcc86	506	static inline u32 linkmode_adv_to_lcl_adv_t(unsigned long *advertising)
5f991f7b AL	507	{
	508	u32 lcl_adv = 0;
	509
3c1bcc86 AL	510	if (linkmode_test_bit(ETHTOOL_LINK_MODE_Pause_BIT,
3c1bcc86 AL	511	advertising))
5f991f7b	512	lcl_adv \|= ADVERTISE_PAUSE_CAP;
7f07e5f1	513	if (linkmode_test_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT,
3c1bcc86	514	advertising))
5f991f7b AL	515	lcl_adv \|= ADVERTISE_PAUSE_ASYM;
	516
	517	return lcl_adv;
	518	}
	519
f6554187 RK	520	/**
	521	* mii_lpa_mod_linkmode_x - decode the link partner's config_reg to linkmodes
	522	* @linkmodes: link modes array
	523	* @lpa: config_reg word from link partner
	524	* @fd_bit: link mode for 1000XFULL bit
	525	*/
	526	static inline void mii_lpa_mod_linkmode_x(unsigned long *linkmodes, u16 lpa,
	527	int fd_bit)
	528	{
	529	linkmode_mod_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, linkmodes,
	530	lpa & LPA_LPACK);
	531	linkmode_mod_bit(ETHTOOL_LINK_MODE_Pause_BIT, linkmodes,
	532	lpa & LPA_1000XPAUSE);
	533	linkmode_mod_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT, linkmodes,
	534	lpa & LPA_1000XPAUSE_ASYM);
	535	linkmode_mod_bit(fd_bit, linkmodes,
	536	lpa & LPA_1000XFULL);
	537	}
	538
a9f28eba RK	539	/**
	540	* linkmode_adv_to_mii_adv_x - encode a linkmode to config_reg
	541	* @linkmodes: linkmodes
	542	* @fd_bit: full duplex bit
	543	*/
	544	static inline u16 linkmode_adv_to_mii_adv_x(const unsigned long *linkmodes,
	545	int fd_bit)
	546	{
	547	u16 adv = 0;
	548
	549	if (linkmode_test_bit(fd_bit, linkmodes))
	550	adv \|= ADVERTISE_1000XFULL;
	551	if (linkmode_test_bit(ETHTOOL_LINK_MODE_Pause_BIT, linkmodes))
	552	adv \|= ADVERTISE_1000XPAUSE;
	553	if (linkmode_test_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT, linkmodes))
	554	adv \|= ADVERTISE_1000XPSE_ASYM;
	555
	556	return adv;
	557	}
	558
a8c30832 BH	559	/**
	560	* mii_advertise_flowctrl - get flow control advertisement flags
	561	* @cap: Flow control capabilities (FLOW_CTRL_RX, FLOW_CTRL_TX or both)
	562	*/
	563	static inline u16 mii_advertise_flowctrl(int cap)
	564	{
	565	u16 adv = 0;
	566
	567	if (cap & FLOW_CTRL_RX)
	568	adv = ADVERTISE_PAUSE_CAP \| ADVERTISE_PAUSE_ASYM;
	569	if (cap & FLOW_CTRL_TX)
	570	adv ^= ADVERTISE_PAUSE_ASYM;
	571
	572	return adv;
	573	}
	574
bc02ff95 SG	575	/**
	576	* mii_resolve_flowctrl_fdx
	577	* @lcladv: value of MII ADVERTISE register
	578	* @rmtadv: value of MII LPA register
	579	*
	580	* Resolve full duplex flow control as per IEEE 802.3-2005 table 28B-3
	581	*/
	582	static inline u8 mii_resolve_flowctrl_fdx(u16 lcladv, u16 rmtadv)
	583	{
	584	u8 cap = 0;
	585
44c22ee9 BH	586	if (lcladv & rmtadv & ADVERTISE_PAUSE_CAP) {
	587	cap = FLOW_CTRL_TX \| FLOW_CTRL_RX;
	588	} else if (lcladv & rmtadv & ADVERTISE_PAUSE_ASYM) {
	589	if (lcladv & ADVERTISE_PAUSE_CAP)
	590	cap = FLOW_CTRL_RX;
	591	else if (rmtadv & ADVERTISE_PAUSE_CAP)
bc02ff95 SG	592	cap = FLOW_CTRL_TX;
	593	}
	594
	595	return cap;
	596	}
	597
1da177e4	598	#endif /* __LINUX_MII_H__ */