[linux-block.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;
}

/**
 * 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_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.
 */
static inline void mii_adv_to_linkmode_adv_t(unsigned long *advertising,
					     u32 adv)
{
	linkmode_zero(advertising);

	if (adv & ADVERTISE_10HALF)
		linkmode_set_bit(ETHTOOL_LINK_MODE_10baseT_Half_BIT,
				 advertising);
	if (adv & ADVERTISE_10FULL)
		linkmode_set_bit(ETHTOOL_LINK_MODE_10baseT_Full_BIT,
				 advertising);
	if (adv & ADVERTISE_100HALF)
		linkmode_set_bit(ETHTOOL_LINK_MODE_100baseT_Half_BIT,
				 advertising);
	if (adv & ADVERTISE_100FULL)
		linkmode_set_bit(ETHTOOL_LINK_MODE_100baseT_Full_BIT,
				 advertising);
	if (adv & ADVERTISE_PAUSE_CAP)
		linkmode_set_bit(ETHTOOL_LINK_MODE_Pause_BIT, advertising);
	if (adv & ADVERTISE_PAUSE_ASYM)
		linkmode_set_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT, advertising);
}

/**
 * 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_Pause_BIT,
			      advertising))
		lcl_adv |= ADVERTISE_PAUSE_ASYM;

	return lcl_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	/**
	211	* linkmode_adv_to_mii_ctrl1000_t
	212	* advertising: the linkmode advertisement settings
	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
	290	/**
37f07023	291	* ethtool_adv_to_mii_adv_x
28011cf1 MC	292	* @ethadv: the ethtool advertisement settings
	293	*
	294	* A small helper function that translates ethtool advertisement
	295	* settings to phy autonegotiation advertisements for the
	296	* MII_CTRL1000 register when in 1000Base-X mode.
	297	*/
37f07023	298	static inline u32 ethtool_adv_to_mii_adv_x(u32 ethadv)
28011cf1 MC	299	{
	300	u32 result = 0;
	301
	302	if (ethadv & ADVERTISED_1000baseT_Half)
	303	result \|= ADVERTISE_1000XHALF;
	304	if (ethadv & ADVERTISED_1000baseT_Full)
	305	result \|= ADVERTISE_1000XFULL;
	306	if (ethadv & ADVERTISED_Pause)
	307	result \|= ADVERTISE_1000XPAUSE;
	308	if (ethadv & ADVERTISED_Asym_Pause)
	309	result \|= ADVERTISE_1000XPSE_ASYM;
	310
	311	return result;
	312	}
	313
	314	/**
37f07023	315	* mii_adv_to_ethtool_adv_x
28011cf1 MC	316	* @adv: value of the MII_CTRL1000 register
	317	*
	318	* A small helper function that translates MII_CTRL1000
	319	* bits, when in 1000Base-X mode, to ethtool
	320	* advertisement settings.
	321	*/
37f07023	322	static inline u32 mii_adv_to_ethtool_adv_x(u32 adv)
28011cf1 MC	323	{
	324	u32 result = 0;
	325
	326	if (adv & ADVERTISE_1000XHALF)
	327	result \|= ADVERTISED_1000baseT_Half;
	328	if (adv & ADVERTISE_1000XFULL)
	329	result \|= ADVERTISED_1000baseT_Full;
	330	if (adv & ADVERTISE_1000XPAUSE)
	331	result \|= ADVERTISED_Pause;
	332	if (adv & ADVERTISE_1000XPSE_ASYM)
	333	result \|= ADVERTISED_Asym_Pause;
	334
	335	return result;
	336	}
	337
37f07023 MC	338	/**
	339	* mii_lpa_to_ethtool_lpa_x
	340	* @adv: value of the MII_LPA register
	341	*
	342	* A small helper function that translates MII_LPA
	343	* bits, when in 1000Base-X mode, to ethtool
	344	* LP advertisement settings.
	345	*/
	346	static inline u32 mii_lpa_to_ethtool_lpa_x(u32 lpa)
	347	{
	348	u32 result = 0;
	349
	350	if (lpa & LPA_LPACK)
	351	result \|= ADVERTISED_Autoneg;
	352
	353	return result \| mii_adv_to_ethtool_adv_x(lpa);
	354	}
	355
edc7ccbb AL	356	/**
	357	* mii_adv_to_linkmode_adv_t
	358	* @advertising:pointer to destination link mode.
	359	* @adv: value of the MII_ADVERTISE register
	360	*
	361	* A small helper function that translates MII_ADVERTISE bits
	362	* to linkmode advertisement settings.
	363	*/
	364	static inline void mii_adv_to_linkmode_adv_t(unsigned long *advertising,
	365	u32 adv)
	366	{
	367	linkmode_zero(advertising);
	368
	369	if (adv & ADVERTISE_10HALF)
	370	linkmode_set_bit(ETHTOOL_LINK_MODE_10baseT_Half_BIT,
	371	advertising);
	372	if (adv & ADVERTISE_10FULL)
	373	linkmode_set_bit(ETHTOOL_LINK_MODE_10baseT_Full_BIT,
	374	advertising);
	375	if (adv & ADVERTISE_100HALF)
	376	linkmode_set_bit(ETHTOOL_LINK_MODE_100baseT_Half_BIT,
	377	advertising);
	378	if (adv & ADVERTISE_100FULL)
	379	linkmode_set_bit(ETHTOOL_LINK_MODE_100baseT_Full_BIT,
	380	advertising);
	381	if (adv & ADVERTISE_PAUSE_CAP)
	382	linkmode_set_bit(ETHTOOL_LINK_MODE_Pause_BIT, advertising);
	383	if (adv & ADVERTISE_PAUSE_ASYM)
	384	linkmode_set_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT, advertising);
	385	}
	386
5f991f7b	387	/**
3c1bcc86 AL	388	* linkmode_adv_to_lcl_adv_t
3c1bcc86 AL	389	* @advertising:pointer to linkmode advertising
5f991f7b	390	*
3c1bcc86	391	* A small helper function that translates linkmode advertising to LVL
5f991f7b AL	392	* pause capabilities.
5f991f7b AL	393	*/
3c1bcc86	394	static inline u32 linkmode_adv_to_lcl_adv_t(unsigned long *advertising)
5f991f7b AL	395	{
	396	u32 lcl_adv = 0;
	397
3c1bcc86 AL	398	if (linkmode_test_bit(ETHTOOL_LINK_MODE_Pause_BIT,
3c1bcc86 AL	399	advertising))
5f991f7b	400	lcl_adv \|= ADVERTISE_PAUSE_CAP;
3c1bcc86 AL	401	if (linkmode_test_bit(ETHTOOL_LINK_MODE_Pause_BIT,
3c1bcc86 AL	402	advertising))
5f991f7b AL	403	lcl_adv \|= ADVERTISE_PAUSE_ASYM;
	404
	405	return lcl_adv;
	406	}
	407
a8c30832 BH	408	/**
	409	* mii_advertise_flowctrl - get flow control advertisement flags
	410	* @cap: Flow control capabilities (FLOW_CTRL_RX, FLOW_CTRL_TX or both)
	411	*/
	412	static inline u16 mii_advertise_flowctrl(int cap)
	413	{
	414	u16 adv = 0;
	415
	416	if (cap & FLOW_CTRL_RX)
	417	adv = ADVERTISE_PAUSE_CAP \| ADVERTISE_PAUSE_ASYM;
	418	if (cap & FLOW_CTRL_TX)
	419	adv ^= ADVERTISE_PAUSE_ASYM;
	420
	421	return adv;
	422	}
	423
bc02ff95 SG	424	/**
	425	* mii_resolve_flowctrl_fdx
	426	* @lcladv: value of MII ADVERTISE register
	427	* @rmtadv: value of MII LPA register
	428	*
	429	* Resolve full duplex flow control as per IEEE 802.3-2005 table 28B-3
	430	*/
	431	static inline u8 mii_resolve_flowctrl_fdx(u16 lcladv, u16 rmtadv)
	432	{
	433	u8 cap = 0;
	434
44c22ee9 BH	435	if (lcladv & rmtadv & ADVERTISE_PAUSE_CAP) {
	436	cap = FLOW_CTRL_TX \| FLOW_CTRL_RX;
	437	} else if (lcladv & rmtadv & ADVERTISE_PAUSE_ASYM) {
	438	if (lcladv & ADVERTISE_PAUSE_CAP)
	439	cap = FLOW_CTRL_RX;
	440	else if (rmtadv & ADVERTISE_PAUSE_CAP)
bc02ff95 SG	441	cap = FLOW_CTRL_TX;
	442	}
	443
	444	return cap;
	445	}
	446
1da177e4	447	#endif /* __LINUX_MII_H__ */