include/linux/mii.h - filogic/uboot - Gitiles

 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
 /*
  * 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>

 /* 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_MMD_CTRL		0x0d	/* MMD Access Control Register */
 #define MII_MMD_DATA		0x0e	/* MMD Access Data Register */
 #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      */
 #define BMCR_SPEED10		0x0000	/* Select 10Mbps               */

 /* 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_XFULL	0x8000	/* Can do 1000BX Full */
 #define ESTATUS_1000_XHALF	0x4000	/* Can do 1000BX Half */
 #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

 /* MMD Access Control register fields */
 #define MII_MMD_CTRL_DEVAD_MASK	0x1f	/* Mask MMD DEVAD*/
 #define MII_MMD_CTRL_ADDR	0x0000	/* Address */
 #define MII_MMD_CTRL_NOINCR	0x4000	/* no post increment */
 #define MII_MMD_CTRL_INCR_RDWT	0x8000	/* post increment on reads & writes */
 #define MII_MMD_CTRL_INCR_ON_WT	0xC000	/* post increment on writes only */

 /**
  * 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;
 }

 /**
  * 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;
 }

 void mii_init(void);

 #endif /* __LINUX_MII_H__ */
	/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
	/*
	* 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>

	/* 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_MMD_CTRL 0x0d /* MMD Access Control Register */
	#define MII_MMD_DATA 0x0e /* MMD Access Data Register */
	#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 */
	#define BMCR_SPEED10 0x0000 /* Select 10Mbps */

	/* 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_XFULL 0x8000 /* Can do 1000BX Full */
	#define ESTATUS_1000_XHALF 0x4000 /* Can do 1000BX Half */
	#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

	/* MMD Access Control register fields */
	#define MII_MMD_CTRL_DEVAD_MASK 0x1f /* Mask MMD DEVAD*/
	#define MII_MMD_CTRL_ADDR 0x0000 /* Address */
	#define MII_MMD_CTRL_NOINCR 0x4000 /* no post increment */
	#define MII_MMD_CTRL_INCR_RDWT 0x8000 /* post increment on reads & writes */
	#define MII_MMD_CTRL_INCR_ON_WT 0xC000 /* post increment on writes only */

	/**
	* 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;
	}

	/**
	* 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;
	}

	void mii_init(void);

	#endif /* __LINUX_MII_H__ */