[linux-2.6-block.git] / include / linux / mii.h

/*
 * 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/types.h>
#include <linux/ethtool.h>

/* Generic MII registers. */
#define MII_BMCR		0x00	/* Basic mode control register */
#define MII_BMSR		0x01	/* Basic mode status register  */
#define MII_PHYSID1		0x02	/* PHYS ID 1                   */
#define MII_PHYSID2		0x03	/* PHYS ID 2                   */
#define MII_ADVERTISE		0x04	/* Advertisement control reg   */
#define MII_LPA			0x05	/* Link partner ability reg    */
#define MII_EXPANSION		0x06	/* Expansion register          */
#define MII_CTRL1000		0x09	/* 1000BASE-T control          */
#define MII_STAT1000		0x0a	/* 1000BASE-T status           */
#define MII_ESTATUS		0x0f	/* Extended Status             */
#define MII_DCOUNTER		0x12	/* Disconnect counter          */
#define MII_FCSCOUNTER		0x13	/* False carrier counter       */
#define MII_NWAYTEST		0x14	/* N-way auto-neg test reg     */
#define MII_RERRCOUNTER		0x15	/* Receive error counter       */
#define MII_SREVISION		0x16	/* Silicon revision            */
#define MII_RESV1		0x17	/* Reserved...                 */
#define MII_LBRERROR		0x18	/* Lpback, rx, bypass error    */
#define MII_PHYADDR		0x19	/* PHY address                 */
#define MII_RESV2		0x1a	/* Reserved...                 */
#define MII_TPISTATUS		0x1b	/* TPI status for 10mbps       */
#define MII_NCONFIG		0x1c	/* Network interface config    */

/* Basic mode control register. */
#define BMCR_RESV		0x003f	/* Unused...                   */
#define BMCR_SPEED1000		0x0040	/* MSB of Speed (1000)         */
#define BMCR_CTST		0x0080	/* Collision test              */
#define BMCR_FULLDPLX		0x0100	/* Full duplex                 */
#define BMCR_ANRESTART		0x0200	/* Auto negotiation restart    */
#define BMCR_ISOLATE		0x0400	/* Isolate data paths from MII */
#define BMCR_PDOWN		0x0800	/* Enable low power state      */
#define BMCR_ANENABLE		0x1000	/* Enable auto negotiation     */
#define BMCR_SPEED100		0x2000	/* Select 100Mbps              */
#define BMCR_LOOPBACK		0x4000	/* TXD loopback bits           */
#define BMCR_RESET		0x8000	/* Reset to default state      */

/* Basic mode status register. */
#define BMSR_ERCAP		0x0001	/* Ext-reg capability          */
#define BMSR_JCD		0x0002	/* Jabber detected             */
#define BMSR_LSTATUS		0x0004	/* Link status                 */
#define BMSR_ANEGCAPABLE	0x0008	/* Able to do auto-negotiation */
#define BMSR_RFAULT		0x0010	/* Remote fault detected       */
#define BMSR_ANEGCOMPLETE	0x0020	/* Auto-negotiation complete   */
#define BMSR_RESV		0x00c0	/* Unused...                   */
#define BMSR_ESTATEN		0x0100	/* Extended Status in R15      */
#define BMSR_100HALF2		0x0200	/* Can do 100BASE-T2 HDX       */
#define BMSR_100FULL2		0x0400	/* Can do 100BASE-T2 FDX       */
#define BMSR_10HALF		0x0800	/* Can do 10mbps, half-duplex  */
#define BMSR_10FULL		0x1000	/* Can do 10mbps, full-duplex  */
#define BMSR_100HALF		0x2000	/* Can do 100mbps, half-duplex */
#define BMSR_100FULL		0x4000	/* Can do 100mbps, full-duplex */
#define BMSR_100BASE4		0x8000	/* Can do 100mbps, 4k packets  */

/* Advertisement control register. */
#define ADVERTISE_SLCT		0x001f	/* Selector bits               */
#define ADVERTISE_CSMA		0x0001	/* Only selector supported     */
#define ADVERTISE_10HALF	0x0020	/* Try for 10mbps half-duplex  */
#define ADVERTISE_1000XFULL	0x0020	/* Try for 1000BASE-X full-duplex */
#define ADVERTISE_10FULL	0x0040	/* Try for 10mbps full-duplex  */
#define ADVERTISE_1000XHALF	0x0040	/* Try for 1000BASE-X half-duplex */
#define ADVERTISE_100HALF	0x0080	/* Try for 100mbps half-duplex */
#define ADVERTISE_1000XPAUSE	0x0080	/* Try for 1000BASE-X pause    */
#define ADVERTISE_100FULL	0x0100	/* Try for 100mbps full-duplex */
#define ADVERTISE_1000XPSE_ASYM	0x0100	/* Try for 1000BASE-X asym pause */
#define ADVERTISE_100BASE4	0x0200	/* Try for 100mbps 4k packets  */
#define ADVERTISE_PAUSE_CAP	0x0400	/* Try for pause               */
#define ADVERTISE_PAUSE_ASYM	0x0800	/* Try for asymetric pause     */
#define ADVERTISE_RESV		0x1000	/* Unused...                   */
#define ADVERTISE_RFAULT	0x2000	/* Say we can detect faults    */
#define ADVERTISE_LPACK		0x4000	/* Ack link partners response  */
#define ADVERTISE_NPAGE		0x8000	/* Next page bit               */

#define ADVERTISE_FULL		(ADVERTISE_100FULL | ADVERTISE_10FULL | \
				  ADVERTISE_CSMA)
#define ADVERTISE_ALL		(ADVERTISE_10HALF | ADVERTISE_10FULL | \
				  ADVERTISE_100HALF | ADVERTISE_100FULL)

/* Link partner ability register. */
#define LPA_SLCT		0x001f	/* Same as advertise selector  */
#define LPA_10HALF		0x0020	/* Can do 10mbps half-duplex   */
#define LPA_1000XFULL		0x0020	/* Can do 1000BASE-X full-duplex */
#define LPA_10FULL		0x0040	/* Can do 10mbps full-duplex   */
#define LPA_1000XHALF		0x0040	/* Can do 1000BASE-X half-duplex */
#define LPA_100HALF		0x0080	/* Can do 100mbps half-duplex  */
#define LPA_1000XPAUSE		0x0080	/* Can do 1000BASE-X pause     */
#define LPA_100FULL		0x0100	/* Can do 100mbps full-duplex  */
#define LPA_1000XPAUSE_ASYM	0x0100	/* Can do 1000BASE-X pause asym*/
#define LPA_100BASE4		0x0200	/* Can do 100mbps 4k packets   */
#define LPA_PAUSE_CAP		0x0400	/* Can pause                   */
#define LPA_PAUSE_ASYM		0x0800	/* Can pause asymetrically     */
#define LPA_RESV		0x1000	/* Unused...                   */
#define LPA_RFAULT		0x2000	/* Link partner faulted        */
#define LPA_LPACK		0x4000	/* Link partner acked us       */
#define LPA_NPAGE		0x8000	/* Next page bit               */

#define LPA_DUPLEX		(LPA_10FULL | LPA_100FULL)
#define LPA_100			(LPA_100FULL | LPA_100HALF | LPA_100BASE4)

/* Expansion register for auto-negotiation. */
#define EXPANSION_NWAY		0x0001	/* Can do N-way auto-nego      */
#define EXPANSION_LCWP		0x0002	/* Got new RX page code word   */
#define EXPANSION_ENABLENPAGE	0x0004	/* This enables npage words    */
#define EXPANSION_NPCAPABLE	0x0008	/* Link partner supports npage */
#define EXPANSION_MFAULTS	0x0010	/* Multiple faults detected    */
#define EXPANSION_RESV		0xffe0	/* Unused...                   */

#define ESTATUS_1000_TFULL	0x2000	/* Can do 1000BT Full          */
#define ESTATUS_1000_THALF	0x1000	/* Can do 1000BT Half          */

/* N-way test register. */
#define NWAYTEST_RESV1		0x00ff	/* Unused...                   */
#define NWAYTEST_LOOPBACK	0x0100	/* Enable loopback for N-way   */
#define NWAYTEST_RESV2		0xfe00	/* Unused...                   */

/* 1000BASE-T Control register */
#define ADVERTISE_1000FULL	0x0200  /* Advertise 1000BASE-T full duplex */
#define ADVERTISE_1000HALF	0x0100  /* Advertise 1000BASE-T half duplex */
#define CTL1000_AS_MASTER	0x0800
#define CTL1000_ENABLE_MASTER	0x1000

/* 1000BASE-T Status register */
#define LPA_1000LOCALRXOK	0x2000	/* Link partner local receiver status */
#define LPA_1000REMRXOK		0x1000	/* Link partner remote receiver status */
#define LPA_1000FULL		0x0800	/* Link partner 1000BASE-T full duplex */
#define LPA_1000HALF		0x0400	/* Link partner 1000BASE-T half duplex */

/* Flow control flags */
#define FLOW_CTRL_TX		0x01
#define FLOW_CTRL_RX		0x02

/* This structure is used in all SIOCxMIIxxx ioctl calls */
struct mii_ioctl_data {
	__u16		phy_id;
	__u16		reg_num;
	__u16		val_in;
	__u16		val_out;
};

#ifdef __KERNEL__

#include <linux/if.h>

struct ethtool_cmd;

struct mii_if_info {
	int phy_id;
	int advertising;
	int phy_id_mask;
	int reg_num_mask;

	unsigned int full_duplex : 1;	/* is full duplex? */
	unsigned int force_media : 1;	/* is autoneg. disabled? */
	unsigned int supports_gmii : 1; /* are GMII registers supported? */

	struct net_device *dev;
	int (*mdio_read) (struct net_device *dev, int phy_id, int location);
	void (*mdio_write) (struct net_device *dev, int phy_id, int location, int val);
};

extern int mii_link_ok (struct mii_if_info *mii);
extern int mii_nway_restart (struct mii_if_info *mii);
extern int mii_ethtool_gset(struct mii_if_info *mii, struct ethtool_cmd *ecmd);
extern int mii_ethtool_sset(struct mii_if_info *mii, struct ethtool_cmd *ecmd);
extern int mii_check_gmii_support(struct mii_if_info *mii);
extern void mii_check_link (struct mii_if_info *mii);
extern unsigned int mii_check_media (struct mii_if_info *mii,
				     unsigned int ok_to_print,
				     unsigned int init_media);
extern int generic_mii_ioctl(struct mii_if_info *mii_if,
			     struct mii_ioctl_data *mii_data, int cmd,
			     unsigned int *duplex_changed);


static inline struct mii_ioctl_data *if_mii(struct ifreq *rq)
{
	return (struct mii_ioctl_data *) &rq->ifr_ifru;
}

/**
 * mii_nway_result
 * @negotiated: value of MII ANAR and'd with ANLPAR
 *
 * Given a set of MII abilities, check each bit and returns the
 * currently supported media, in the priority order defined by
 * IEEE 802.3u.  We use LPA_xxx constants but note this is not the
 * value of LPA solely, as described above.
 *
 * The one exception to IEEE 802.3u is that 100baseT4 is placed
 * between 100T-full and 100T-half.  If your phy does not support
 * 100T4 this is fine.  If your phy places 100T4 elsewhere in the
 * priority order, you will need to roll your own function.
 */
static inline unsigned int mii_nway_result (unsigned int negotiated)
{
	unsigned int ret;

	if (negotiated & LPA_100FULL)
		ret = LPA_100FULL;
	else if (negotiated & LPA_100BASE4)
		ret = LPA_100BASE4;
	else if (negotiated & LPA_100HALF)
		ret = LPA_100HALF;
	else if (negotiated & LPA_10FULL)
		ret = LPA_10FULL;
	else
		ret = LPA_10HALF;

	return ret;
}

/**
 * mii_duplex
 * @duplex_lock: Non-zero if duplex is locked at full
 * @negotiated: value of MII ANAR and'd with ANLPAR
 *
 * A small helper function for a common case.  Returns one
 * if the media is operating or locked at full duplex, and
 * returns zero otherwise.
 */
static inline unsigned int mii_duplex (unsigned int duplex_lock,
				       unsigned int negotiated)
{
	if (duplex_lock)
		return 1;
	if (mii_nway_result(negotiated) & LPA_DUPLEX)
		return 1;
	return 0;
}

/**
 * ethtool_adv_to_mii_adv_t
 * @ethadv: the ethtool advertisement settings
 *
 * A small helper function that translates ethtool advertisement
 * settings to phy autonegotiation advertisements for the
 * MII_ADVERTISE register.
 */
static inline u32 ethtool_adv_to_mii_adv_t(u32 ethadv)
{
	u32 result = 0;

	if (ethadv & ADVERTISED_10baseT_Half)
		result |= ADVERTISE_10HALF;
	if (ethadv & ADVERTISED_10baseT_Full)
		result |= ADVERTISE_10FULL;
	if (ethadv & ADVERTISED_100baseT_Half)
		result |= ADVERTISE_100HALF;
	if (ethadv & ADVERTISED_100baseT_Full)
		result |= ADVERTISE_100FULL;
	if (ethadv & ADVERTISED_Pause)
		result |= ADVERTISE_PAUSE_CAP;
	if (ethadv & ADVERTISED_Asym_Pause)
		result |= ADVERTISE_PAUSE_ASYM;

	return result;
}

/**
 * mii_adv_to_ethtool_adv_t
 * @adv: value of the MII_ADVERTISE register
 *
 * A small helper function that translates MII_ADVERTISE bits
 * to ethtool advertisement settings.
 */
static inline u32 mii_adv_to_ethtool_adv_t(u32 adv)
{
	u32 result = 0;

	if (adv & ADVERTISE_10HALF)
		result |= ADVERTISED_10baseT_Half;
	if (adv & ADVERTISE_10FULL)
		result |= ADVERTISED_10baseT_Full;
	if (adv & ADVERTISE_100HALF)
		result |= ADVERTISED_100baseT_Half;
	if (adv & ADVERTISE_100FULL)
		result |= ADVERTISED_100baseT_Full;
	if (adv & ADVERTISE_PAUSE_CAP)
		result |= ADVERTISED_Pause;
	if (adv & ADVERTISE_PAUSE_ASYM)
		result |= ADVERTISED_Asym_Pause;

	return result;
}

/**
 * ethtool_adv_to_mii_ctrl1000_t
 * @ethadv: the ethtool advertisement settings
 *
 * A small helper function that translates ethtool advertisement
 * settings to phy autonegotiation advertisements for the
 * MII_CTRL1000 register when in 1000T mode.
 */
static inline u32 ethtool_adv_to_mii_ctrl1000_t(u32 ethadv)
{
	u32 result = 0;

	if (ethadv & ADVERTISED_1000baseT_Half)
		result |= ADVERTISE_1000HALF;
	if (ethadv & ADVERTISED_1000baseT_Full)
		result |= ADVERTISE_1000FULL;

	return result;
}

/**
 * mii_ctrl1000_to_ethtool_adv_t
 * @adv: value of the MII_CTRL1000 register
 *
 * A small helper function that translates MII_CTRL1000
 * bits, when in 1000Base-T mode, to ethtool
 * advertisement settings.
 */
static inline u32 mii_ctrl1000_to_ethtool_adv_t(u32 adv)
{
	u32 result = 0;

	if (adv & ADVERTISE_1000HALF)
		result |= ADVERTISED_1000baseT_Half;
	if (adv & ADVERTISE_1000FULL)
		result |= ADVERTISED_1000baseT_Full;

	return result;
}

/**
 * mii_lpa_to_ethtool_lpa_t
 * @adv: value of the MII_LPA register
 *
 * A small helper function that translates MII_LPA
 * bits, when in 1000Base-T mode, to ethtool
 * LP advertisement settings.
 */
static inline u32 mii_lpa_to_ethtool_lpa_t(u32 lpa)
{
	u32 result = 0;

	if (lpa & LPA_LPACK)
		result |= ADVERTISED_Autoneg;

	return result | mii_adv_to_ethtool_adv_t(lpa);
}

/**
 * mii_stat1000_to_ethtool_lpa_t
 * @adv: value of the MII_STAT1000 register
 *
 * A small helper function that translates MII_STAT1000
 * bits, when in 1000Base-T mode, to ethtool
 * advertisement settings.
 */
static inline u32 mii_stat1000_to_ethtool_lpa_t(u32 lpa)
{
	u32 result = 0;

	if (lpa & LPA_1000HALF)
		result |= ADVERTISED_1000baseT_Half;
	if (lpa & LPA_1000FULL)
		result |= ADVERTISED_1000baseT_Full;

	return result;
}

/**
 * ethtool_adv_to_mii_adv_x
 * @ethadv: the ethtool advertisement settings
 *
 * A small helper function that translates ethtool advertisement
 * settings to phy autonegotiation advertisements for the
 * MII_CTRL1000 register when in 1000Base-X mode.
 */
static inline u32 ethtool_adv_to_mii_adv_x(u32 ethadv)
{
	u32 result = 0;

	if (ethadv & ADVERTISED_1000baseT_Half)
		result |= ADVERTISE_1000XHALF;
	if (ethadv & ADVERTISED_1000baseT_Full)
		result |= ADVERTISE_1000XFULL;
	if (ethadv & ADVERTISED_Pause)
		result |= ADVERTISE_1000XPAUSE;
	if (ethadv & ADVERTISED_Asym_Pause)
		result |= ADVERTISE_1000XPSE_ASYM;

	return result;
}

/**
 * mii_adv_to_ethtool_adv_x
 * @adv: value of the MII_CTRL1000 register
 *
 * A small helper function that translates MII_CTRL1000
 * bits, when in 1000Base-X mode, to ethtool
 * advertisement settings.
 */
static inline u32 mii_adv_to_ethtool_adv_x(u32 adv)
{
	u32 result = 0;

	if (adv & ADVERTISE_1000XHALF)
		result |= ADVERTISED_1000baseT_Half;
	if (adv & ADVERTISE_1000XFULL)
		result |= ADVERTISED_1000baseT_Full;
	if (adv & ADVERTISE_1000XPAUSE)
		result |= ADVERTISED_Pause;
	if (adv & ADVERTISE_1000XPSE_ASYM)
		result |= ADVERTISED_Asym_Pause;

	return result;
}

/**
 * mii_lpa_to_ethtool_lpa_x
 * @adv: value of the MII_LPA register
 *
 * A small helper function that translates MII_LPA
 * bits, when in 1000Base-X mode, to ethtool
 * LP advertisement settings.
 */
static inline u32 mii_lpa_to_ethtool_lpa_x(u32 lpa)
{
	u32 result = 0;

	if (lpa & LPA_LPACK)
		result |= ADVERTISED_Autoneg;

	return result | mii_adv_to_ethtool_adv_x(lpa);
}

/**
 * mii_advertise_flowctrl - get flow control advertisement flags
 * @cap: Flow control capabilities (FLOW_CTRL_RX, FLOW_CTRL_TX or both)
 */
static inline u16 mii_advertise_flowctrl(int cap)
{
	u16 adv = 0;

	if (cap & FLOW_CTRL_RX)
		adv = ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
	if (cap & FLOW_CTRL_TX)
		adv ^= ADVERTISE_PAUSE_ASYM;

	return adv;
}

/**
 * mii_resolve_flowctrl_fdx
 * @lcladv: value of MII ADVERTISE register
 * @rmtadv: value of MII LPA register
 *
 * Resolve full duplex flow control as per IEEE 802.3-2005 table 28B-3
 */
static inline u8 mii_resolve_flowctrl_fdx(u16 lcladv, u16 rmtadv)
{
	u8 cap = 0;

	if (lcladv & rmtadv & ADVERTISE_PAUSE_CAP) {
		cap = FLOW_CTRL_TX | FLOW_CTRL_RX;
	} else if (lcladv & rmtadv & ADVERTISE_PAUSE_ASYM) {
		if (lcladv & ADVERTISE_PAUSE_CAP)
			cap = FLOW_CTRL_RX;
		else if (rmtadv & ADVERTISE_PAUSE_CAP)
			cap = FLOW_CTRL_TX;
	}

	return cap;
}

#endif /* __KERNEL__ */
#endif /* __LINUX_MII_H__ */
Commit	Line	Data
1da177e4 LT	1	/*
	2	* linux/mii.h: definitions for MII-compatible transceivers
	3	* Originally drivers/net/sunhme.h.
	4	*
	5	* Copyright (C) 1996, 1999, 2001 David S. Miller (davem@redhat.com)
	6	*/
	7
	8	#ifndef __LINUX_MII_H__
	9	#define __LINUX_MII_H__
	10
	11	#include <linux/types.h>
28011cf1	12	#include <linux/ethtool.h>
1da177e4 LT	13
1da177e4 LT	14	/* Generic MII registers. */
c44f7eb4 ME	15	#define MII_BMCR 0x00 /* Basic mode control register */
	16	#define MII_BMSR 0x01 /* Basic mode status register */
	17	#define MII_PHYSID1 0x02 /* PHYS ID 1 */
	18	#define MII_PHYSID2 0x03 /* PHYS ID 2 */
	19	#define MII_ADVERTISE 0x04 /* Advertisement control reg */
	20	#define MII_LPA 0x05 /* Link partner ability reg */
	21	#define MII_EXPANSION 0x06 /* Expansion register */
	22	#define MII_CTRL1000 0x09 /* 1000BASE-T control */
	23	#define MII_STAT1000 0x0a /* 1000BASE-T status */
	24	#define MII_ESTATUS 0x0f /* Extended Status */
	25	#define MII_DCOUNTER 0x12 /* Disconnect counter */
	26	#define MII_FCSCOUNTER 0x13 /* False carrier counter */
	27	#define MII_NWAYTEST 0x14 /* N-way auto-neg test reg */
	28	#define MII_RERRCOUNTER 0x15 /* Receive error counter */
	29	#define MII_SREVISION 0x16 /* Silicon revision */
	30	#define MII_RESV1 0x17 /* Reserved... */
	31	#define MII_LBRERROR 0x18 /* Lpback, rx, bypass error */
	32	#define MII_PHYADDR 0x19 /* PHY address */
	33	#define MII_RESV2 0x1a /* Reserved... */
	34	#define MII_TPISTATUS 0x1b /* TPI status for 10mbps */
	35	#define MII_NCONFIG 0x1c /* Network interface config */
1da177e4 LT	36
1da177e4 LT	37	/* Basic mode control register. */
c44f7eb4 ME	38	#define BMCR_RESV 0x003f /* Unused... */
	39	#define BMCR_SPEED1000 0x0040 /* MSB of Speed (1000) */
	40	#define BMCR_CTST 0x0080 /* Collision test */
	41	#define BMCR_FULLDPLX 0x0100 /* Full duplex */
	42	#define BMCR_ANRESTART 0x0200 /* Auto negotiation restart */
e8aaebc6 ME	43	#define BMCR_ISOLATE 0x0400 /* Isolate data paths from MII */
e8aaebc6 ME	44	#define BMCR_PDOWN 0x0800 /* Enable low power state */
c44f7eb4 ME	45	#define BMCR_ANENABLE 0x1000 /* Enable auto negotiation */
	46	#define BMCR_SPEED100 0x2000 /* Select 100Mbps */
	47	#define BMCR_LOOPBACK 0x4000 /* TXD loopback bits */
e8aaebc6	48	#define BMCR_RESET 0x8000 /* Reset to default state */
1da177e4 LT	49
1da177e4 LT	50	/* Basic mode status register. */
c44f7eb4 ME	51	#define BMSR_ERCAP 0x0001 /* Ext-reg capability */
	52	#define BMSR_JCD 0x0002 /* Jabber detected */
	53	#define BMSR_LSTATUS 0x0004 /* Link status */
	54	#define BMSR_ANEGCAPABLE 0x0008 /* Able to do auto-negotiation */
	55	#define BMSR_RFAULT 0x0010 /* Remote fault detected */
	56	#define BMSR_ANEGCOMPLETE 0x0020 /* Auto-negotiation complete */
	57	#define BMSR_RESV 0x00c0 /* Unused... */
	58	#define BMSR_ESTATEN 0x0100 /* Extended Status in R15 */
	59	#define BMSR_100HALF2 0x0200 /* Can do 100BASE-T2 HDX */
	60	#define BMSR_100FULL2 0x0400 /* Can do 100BASE-T2 FDX */
	61	#define BMSR_10HALF 0x0800 /* Can do 10mbps, half-duplex */
	62	#define BMSR_10FULL 0x1000 /* Can do 10mbps, full-duplex */
	63	#define BMSR_100HALF 0x2000 /* Can do 100mbps, half-duplex */
	64	#define BMSR_100FULL 0x4000 /* Can do 100mbps, full-duplex */
	65	#define BMSR_100BASE4 0x8000 /* Can do 100mbps, 4k packets */
1da177e4 LT	66
1da177e4 LT	67	/* Advertisement control register. */
c44f7eb4 ME	68	#define ADVERTISE_SLCT 0x001f /* Selector bits */
	69	#define ADVERTISE_CSMA 0x0001 /* Only selector supported */
	70	#define ADVERTISE_10HALF 0x0020 /* Try for 10mbps half-duplex */
	71	#define ADVERTISE_1000XFULL 0x0020 /* Try for 1000BASE-X full-duplex */
	72	#define ADVERTISE_10FULL 0x0040 /* Try for 10mbps full-duplex */
	73	#define ADVERTISE_1000XHALF 0x0040 /* Try for 1000BASE-X half-duplex */
	74	#define ADVERTISE_100HALF 0x0080 /* Try for 100mbps half-duplex */
	75	#define ADVERTISE_1000XPAUSE 0x0080 /* Try for 1000BASE-X pause */
	76	#define ADVERTISE_100FULL 0x0100 /* Try for 100mbps full-duplex */
	77	#define ADVERTISE_1000XPSE_ASYM 0x0100 /* Try for 1000BASE-X asym pause */
	78	#define ADVERTISE_100BASE4 0x0200 /* Try for 100mbps 4k packets */
	79	#define ADVERTISE_PAUSE_CAP 0x0400 /* Try for pause */
	80	#define ADVERTISE_PAUSE_ASYM 0x0800 /* Try for asymetric pause */
	81	#define ADVERTISE_RESV 0x1000 /* Unused... */
	82	#define ADVERTISE_RFAULT 0x2000 /* Say we can detect faults */
	83	#define ADVERTISE_LPACK 0x4000 /* Ack link partners response */
	84	#define ADVERTISE_NPAGE 0x8000 /* Next page bit */
	85
	86	#define ADVERTISE_FULL (ADVERTISE_100FULL \| ADVERTISE_10FULL \| \
	87	ADVERTISE_CSMA)
	88	#define ADVERTISE_ALL (ADVERTISE_10HALF \| ADVERTISE_10FULL \| \
	89	ADVERTISE_100HALF \| ADVERTISE_100FULL)
1da177e4 LT	90
1da177e4 LT	91	/* Link partner ability register. */
c44f7eb4 ME	92	#define LPA_SLCT 0x001f /* Same as advertise selector */
	93	#define LPA_10HALF 0x0020 /* Can do 10mbps half-duplex */
	94	#define LPA_1000XFULL 0x0020 /* Can do 1000BASE-X full-duplex */
	95	#define LPA_10FULL 0x0040 /* Can do 10mbps full-duplex */
	96	#define LPA_1000XHALF 0x0040 /* Can do 1000BASE-X half-duplex */
	97	#define LPA_100HALF 0x0080 /* Can do 100mbps half-duplex */
	98	#define LPA_1000XPAUSE 0x0080 /* Can do 1000BASE-X pause */
	99	#define LPA_100FULL 0x0100 /* Can do 100mbps full-duplex */
	100	#define LPA_1000XPAUSE_ASYM 0x0100 /* Can do 1000BASE-X pause asym*/
	101	#define LPA_100BASE4 0x0200 /* Can do 100mbps 4k packets */
	102	#define LPA_PAUSE_CAP 0x0400 /* Can pause */
	103	#define LPA_PAUSE_ASYM 0x0800 /* Can pause asymetrically */
	104	#define LPA_RESV 0x1000 /* Unused... */
	105	#define LPA_RFAULT 0x2000 /* Link partner faulted */
	106	#define LPA_LPACK 0x4000 /* Link partner acked us */
	107	#define LPA_NPAGE 0x8000 /* Next page bit */
1da177e4 LT	108
	109	#define LPA_DUPLEX (LPA_10FULL \| LPA_100FULL)
	110	#define LPA_100 (LPA_100FULL \| LPA_100HALF \| LPA_100BASE4)
	111
	112	/* Expansion register for auto-negotiation. */
c44f7eb4 ME	113	#define EXPANSION_NWAY 0x0001 /* Can do N-way auto-nego */
	114	#define EXPANSION_LCWP 0x0002 /* Got new RX page code word */
	115	#define EXPANSION_ENABLENPAGE 0x0004 /* This enables npage words */
	116	#define EXPANSION_NPCAPABLE 0x0008 /* Link partner supports npage */
	117	#define EXPANSION_MFAULTS 0x0010 /* Multiple faults detected */
	118	#define EXPANSION_RESV 0xffe0 /* Unused... */
1da177e4	119
c44f7eb4 ME	120	#define ESTATUS_1000_TFULL 0x2000 /* Can do 1000BT Full */
c44f7eb4 ME	121	#define ESTATUS_1000_THALF 0x1000 /* Can do 1000BT Half */
00db8189	122
1da177e4	123	/* N-way test register. */
c44f7eb4 ME	124	#define NWAYTEST_RESV1 0x00ff /* Unused... */
	125	#define NWAYTEST_LOOPBACK 0x0100 /* Enable loopback for N-way */
	126	#define NWAYTEST_RESV2 0xfe00 /* Unused... */
1da177e4 LT	127
1da177e4 LT	128	/* 1000BASE-T Control register */
c44f7eb4 ME	129	#define ADVERTISE_1000FULL 0x0200 /* Advertise 1000BASE-T full duplex */
c44f7eb4 ME	130	#define ADVERTISE_1000HALF 0x0100 /* Advertise 1000BASE-T half duplex */
221c5637 MC	131	#define CTL1000_AS_MASTER 0x0800
221c5637 MC	132	#define CTL1000_ENABLE_MASTER 0x1000
1da177e4 LT	133
1da177e4 LT	134	/* 1000BASE-T Status register */
c44f7eb4 ME	135	#define LPA_1000LOCALRXOK 0x2000 /* Link partner local receiver status */
	136	#define LPA_1000REMRXOK 0x1000 /* Link partner remote receiver status */
	137	#define LPA_1000FULL 0x0800 /* Link partner 1000BASE-T full duplex */
	138	#define LPA_1000HALF 0x0400 /* Link partner 1000BASE-T half duplex */
1da177e4	139
e18ce346 SG	140	/* Flow control flags */
	141	#define FLOW_CTRL_TX 0x01
	142	#define FLOW_CTRL_RX 0x02
	143
c3ce7e20 DW	144	/* This structure is used in all SIOCxMIIxxx ioctl calls */
	145	struct mii_ioctl_data {
	146	__u16 phy_id;
	147	__u16 reg_num;
	148	__u16 val_in;
	149	__u16 val_out;
	150	};
	151
c44f7eb4	152	#ifdef __KERNEL__
c3ce7e20 DW	153
	154	#include <linux/if.h>
	155
	156	struct ethtool_cmd;
	157
1da177e4 LT	158	struct mii_if_info {
	159	int phy_id;
	160	int advertising;
	161	int phy_id_mask;
	162	int reg_num_mask;
	163
	164	unsigned int full_duplex : 1; /* is full duplex? */
	165	unsigned int force_media : 1; /* is autoneg. disabled? */
	166	unsigned int supports_gmii : 1; /* are GMII registers supported? */
	167
	168	struct net_device *dev;
	169	int (mdio_read) (struct net_device dev, int phy_id, int location);
	170	void (mdio_write) (struct net_device dev, int phy_id, int location, int val);
	171	};
	172
1da177e4 LT	173	extern int mii_link_ok (struct mii_if_info *mii);
	174	extern int mii_nway_restart (struct mii_if_info *mii);
	175	extern int mii_ethtool_gset(struct mii_if_info mii, struct ethtool_cmd ecmd);
	176	extern int mii_ethtool_sset(struct mii_if_info mii, struct ethtool_cmd ecmd);
43ec6e95	177	extern int mii_check_gmii_support(struct mii_if_info *mii);
1da177e4 LT	178	extern void mii_check_link (struct mii_if_info *mii);
	179	extern unsigned int mii_check_media (struct mii_if_info *mii,
	180	unsigned int ok_to_print,
	181	unsigned int init_media);
	182	extern int generic_mii_ioctl(struct mii_if_info *mii_if,
c44f7eb4	183	struct mii_ioctl_data *mii_data, int cmd,
1da177e4 LT	184	unsigned int *duplex_changed);
	185
	186
1da177e4 LT	187	static inline struct mii_ioctl_data if_mii(struct ifreq rq)
	188	{
	189	return (struct mii_ioctl_data *) &rq->ifr_ifru;
	190	}
	191
1da177e4 LT	192	/**
	193	* mii_nway_result
	194	* @negotiated: value of MII ANAR and'd with ANLPAR
	195	*
	196	* Given a set of MII abilities, check each bit and returns the
	197	* currently supported media, in the priority order defined by
	198	* IEEE 802.3u. We use LPA_xxx constants but note this is not the
	199	* value of LPA solely, as described above.
	200	*
	201	* The one exception to IEEE 802.3u is that 100baseT4 is placed
	202	* between 100T-full and 100T-half. If your phy does not support
	203	* 100T4 this is fine. If your phy places 100T4 elsewhere in the
	204	* priority order, you will need to roll your own function.
	205	*/
	206	static inline unsigned int mii_nway_result (unsigned int negotiated)
	207	{
	208	unsigned int ret;
	209
	210	if (negotiated & LPA_100FULL)
	211	ret = LPA_100FULL;
	212	else if (negotiated & LPA_100BASE4)
	213	ret = LPA_100BASE4;
	214	else if (negotiated & LPA_100HALF)
	215	ret = LPA_100HALF;
	216	else if (negotiated & LPA_10FULL)
	217	ret = LPA_10FULL;
	218	else
	219	ret = LPA_10HALF;
	220
	221	return ret;
	222	}
	223
	224	/**
	225	* mii_duplex
	226	* @duplex_lock: Non-zero if duplex is locked at full
	227	* @negotiated: value of MII ANAR and'd with ANLPAR
	228	*
	229	* A small helper function for a common case. Returns one
	230	* if the media is operating or locked at full duplex, and
	231	* returns zero otherwise.
	232	*/
	233	static inline unsigned int mii_duplex (unsigned int duplex_lock,
	234	unsigned int negotiated)
	235	{
	236	if (duplex_lock)
	237	return 1;
	238	if (mii_nway_result(negotiated) & LPA_DUPLEX)
	239	return 1;
	240	return 0;
	241	}
	242
28011cf1	243	/**
37f07023	244	* ethtool_adv_to_mii_adv_t
28011cf1 MC	245	* @ethadv: the ethtool advertisement settings
	246	*
	247	* A small helper function that translates ethtool advertisement
	248	* settings to phy autonegotiation advertisements for the
	249	* MII_ADVERTISE register.
	250	*/
37f07023	251	static inline u32 ethtool_adv_to_mii_adv_t(u32 ethadv)
28011cf1 MC	252	{
	253	u32 result = 0;
	254
	255	if (ethadv & ADVERTISED_10baseT_Half)
	256	result \|= ADVERTISE_10HALF;
	257	if (ethadv & ADVERTISED_10baseT_Full)
	258	result \|= ADVERTISE_10FULL;
	259	if (ethadv & ADVERTISED_100baseT_Half)
	260	result \|= ADVERTISE_100HALF;
	261	if (ethadv & ADVERTISED_100baseT_Full)
	262	result \|= ADVERTISE_100FULL;
	263	if (ethadv & ADVERTISED_Pause)
	264	result \|= ADVERTISE_PAUSE_CAP;
	265	if (ethadv & ADVERTISED_Asym_Pause)
	266	result \|= ADVERTISE_PAUSE_ASYM;
	267
	268	return result;
	269	}
	270
	271	/**
37f07023	272	* mii_adv_to_ethtool_adv_t
28011cf1 MC	273	* @adv: value of the MII_ADVERTISE register
	274	*
	275	* A small helper function that translates MII_ADVERTISE bits
	276	* to ethtool advertisement settings.
	277	*/
37f07023	278	static inline u32 mii_adv_to_ethtool_adv_t(u32 adv)
28011cf1 MC	279	{
	280	u32 result = 0;
	281
	282	if (adv & ADVERTISE_10HALF)
	283	result \|= ADVERTISED_10baseT_Half;
	284	if (adv & ADVERTISE_10FULL)
	285	result \|= ADVERTISED_10baseT_Full;
	286	if (adv & ADVERTISE_100HALF)
	287	result \|= ADVERTISED_100baseT_Half;
	288	if (adv & ADVERTISE_100FULL)
	289	result \|= ADVERTISED_100baseT_Full;
	290	if (adv & ADVERTISE_PAUSE_CAP)
	291	result \|= ADVERTISED_Pause;
	292	if (adv & ADVERTISE_PAUSE_ASYM)
	293	result \|= ADVERTISED_Asym_Pause;
	294
	295	return result;
	296	}
	297
	298	/**
37f07023	299	* ethtool_adv_to_mii_ctrl1000_t
28011cf1 MC	300	* @ethadv: the ethtool advertisement settings
	301	*
	302	* A small helper function that translates ethtool advertisement
	303	* settings to phy autonegotiation advertisements for the
	304	* MII_CTRL1000 register when in 1000T mode.
	305	*/
37f07023	306	static inline u32 ethtool_adv_to_mii_ctrl1000_t(u32 ethadv)
28011cf1 MC	307	{
	308	u32 result = 0;
	309
	310	if (ethadv & ADVERTISED_1000baseT_Half)
	311	result \|= ADVERTISE_1000HALF;
	312	if (ethadv & ADVERTISED_1000baseT_Full)
	313	result \|= ADVERTISE_1000FULL;
	314
	315	return result;
	316	}
	317
	318	/**
37f07023	319	* mii_ctrl1000_to_ethtool_adv_t
28011cf1 MC	320	* @adv: value of the MII_CTRL1000 register
	321	*
	322	* A small helper function that translates MII_CTRL1000
	323	* bits, when in 1000Base-T mode, to ethtool
	324	* advertisement settings.
	325	*/
37f07023	326	static inline u32 mii_ctrl1000_to_ethtool_adv_t(u32 adv)
28011cf1 MC	327	{
	328	u32 result = 0;
	329
	330	if (adv & ADVERTISE_1000HALF)
	331	result \|= ADVERTISED_1000baseT_Half;
	332	if (adv & ADVERTISE_1000FULL)
	333	result \|= ADVERTISED_1000baseT_Full;
	334
	335	return result;
	336	}
	337
37f07023 MC	338	/**
	339	* mii_lpa_to_ethtool_lpa_t
	340	* @adv: value of the MII_LPA register
	341	*
	342	* A small helper function that translates MII_LPA
	343	* bits, when in 1000Base-T mode, to ethtool
	344	* LP advertisement settings.
	345	*/
	346	static inline u32 mii_lpa_to_ethtool_lpa_t(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_t(lpa);
	354	}
28011cf1 MC	355
28011cf1 MC	356	/**
37f07023	357	* mii_stat1000_to_ethtool_lpa_t
28011cf1 MC	358	* @adv: value of the MII_STAT1000 register
	359	*
	360	* A small helper function that translates MII_STAT1000
	361	* bits, when in 1000Base-T mode, to ethtool
	362	* advertisement settings.
	363	*/
37f07023	364	static inline u32 mii_stat1000_to_ethtool_lpa_t(u32 lpa)
28011cf1 MC	365	{
	366	u32 result = 0;
	367
	368	if (lpa & LPA_1000HALF)
	369	result \|= ADVERTISED_1000baseT_Half;
	370	if (lpa & LPA_1000FULL)
	371	result \|= ADVERTISED_1000baseT_Full;
	372
	373	return result;
	374	}
	375
	376	/**
37f07023	377	* ethtool_adv_to_mii_adv_x
28011cf1 MC	378	* @ethadv: the ethtool advertisement settings
	379	*
	380	* A small helper function that translates ethtool advertisement
	381	* settings to phy autonegotiation advertisements for the
	382	* MII_CTRL1000 register when in 1000Base-X mode.
	383	*/
37f07023	384	static inline u32 ethtool_adv_to_mii_adv_x(u32 ethadv)
28011cf1 MC	385	{
	386	u32 result = 0;
	387
	388	if (ethadv & ADVERTISED_1000baseT_Half)
	389	result \|= ADVERTISE_1000XHALF;
	390	if (ethadv & ADVERTISED_1000baseT_Full)
	391	result \|= ADVERTISE_1000XFULL;
	392	if (ethadv & ADVERTISED_Pause)
	393	result \|= ADVERTISE_1000XPAUSE;
	394	if (ethadv & ADVERTISED_Asym_Pause)
	395	result \|= ADVERTISE_1000XPSE_ASYM;
	396
	397	return result;
	398	}
	399
	400	/**
37f07023	401	* mii_adv_to_ethtool_adv_x
28011cf1 MC	402	* @adv: value of the MII_CTRL1000 register
	403	*
	404	* A small helper function that translates MII_CTRL1000
	405	* bits, when in 1000Base-X mode, to ethtool
	406	* advertisement settings.
	407	*/
37f07023	408	static inline u32 mii_adv_to_ethtool_adv_x(u32 adv)
28011cf1 MC	409	{
	410	u32 result = 0;
	411
	412	if (adv & ADVERTISE_1000XHALF)
	413	result \|= ADVERTISED_1000baseT_Half;
	414	if (adv & ADVERTISE_1000XFULL)
	415	result \|= ADVERTISED_1000baseT_Full;
	416	if (adv & ADVERTISE_1000XPAUSE)
	417	result \|= ADVERTISED_Pause;
	418	if (adv & ADVERTISE_1000XPSE_ASYM)
	419	result \|= ADVERTISED_Asym_Pause;
	420
	421	return result;
	422	}
	423
37f07023 MC	424	/**
	425	* mii_lpa_to_ethtool_lpa_x
	426	* @adv: value of the MII_LPA register
	427	*
	428	* A small helper function that translates MII_LPA
	429	* bits, when in 1000Base-X mode, to ethtool
	430	* LP advertisement settings.
	431	*/
	432	static inline u32 mii_lpa_to_ethtool_lpa_x(u32 lpa)
	433	{
	434	u32 result = 0;
	435
	436	if (lpa & LPA_LPACK)
	437	result \|= ADVERTISED_Autoneg;
	438
	439	return result \| mii_adv_to_ethtool_adv_x(lpa);
	440	}
	441
a8c30832 BH	442	/**
	443	* mii_advertise_flowctrl - get flow control advertisement flags
	444	* @cap: Flow control capabilities (FLOW_CTRL_RX, FLOW_CTRL_TX or both)
	445	*/
	446	static inline u16 mii_advertise_flowctrl(int cap)
	447	{
	448	u16 adv = 0;
	449
	450	if (cap & FLOW_CTRL_RX)
	451	adv = ADVERTISE_PAUSE_CAP \| ADVERTISE_PAUSE_ASYM;
	452	if (cap & FLOW_CTRL_TX)
	453	adv ^= ADVERTISE_PAUSE_ASYM;
	454
	455	return adv;
	456	}
	457
bc02ff95 SG	458	/**
	459	* mii_resolve_flowctrl_fdx
	460	* @lcladv: value of MII ADVERTISE register
	461	* @rmtadv: value of MII LPA register
	462	*
	463	* Resolve full duplex flow control as per IEEE 802.3-2005 table 28B-3
	464	*/
	465	static inline u8 mii_resolve_flowctrl_fdx(u16 lcladv, u16 rmtadv)
	466	{
	467	u8 cap = 0;
	468
44c22ee9 BH	469	if (lcladv & rmtadv & ADVERTISE_PAUSE_CAP) {
	470	cap = FLOW_CTRL_TX \| FLOW_CTRL_RX;
	471	} else if (lcladv & rmtadv & ADVERTISE_PAUSE_ASYM) {
	472	if (lcladv & ADVERTISE_PAUSE_CAP)
	473	cap = FLOW_CTRL_RX;
	474	else if (rmtadv & ADVERTISE_PAUSE_CAP)
bc02ff95 SG	475	cap = FLOW_CTRL_TX;
	476	}
	477
	478	return cap;
	479	}
	480
c3ce7e20	481	#endif /* __KERNEL__ */
1da177e4	482	#endif /* __LINUX_MII_H__ */