[u-boot.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 ([email protected])
 */

#ifndef __LINUX_MII_H__
#define __LINUX_MII_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_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	/* Disconnect DP83840 from MII */
#define BMCR_PDOWN		0x0800	/* Powerdown the DP83840       */
#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 the DP83840	       */

/* 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		0x07c0	/* Unused...		       */
#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_10FULL	0x0040	/* Try for 10mbps full-duplex  */
#define ADVERTISE_100HALF	0x0080	/* Try for 100mbps half-duplex */
#define ADVERTISE_100FULL	0x0100	/* Try for 100mbps full-duplex */
#define ADVERTISE_100BASE4	0x0200	/* Try for 100mbps 4k packets  */
#define ADVERTISE_RESV		0x1c00	/* 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_10FULL		0x0040	/* Can do 10mbps full-duplex   */
#define LPA_100HALF		0x0080	/* Can do 100mbps half-duplex  */
#define LPA_100FULL		0x0100	/* Can do 100mbps full-duplex  */
#define LPA_100BASE4		0x0200	/* Can do 100mbps 4k packets   */
#define LPA_RESV		0x1c00	/* 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...		       */

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


/**
 * 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;
}


#endif /* __LINUX_MII_H__ */
Commit	Line	Data
91975b0f HS	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 ([email protected])
	6	*/
	7
	8	#ifndef __LINUX_MII_H__
	9	#define __LINUX_MII_H__
	10
	11	/* Generic MII registers. */
	12
b99c1e6d WD	13	#define MII_BMCR 0x00 /* Basic mode control register */
	14	#define MII_BMSR 0x01 /* Basic mode status register */
	15	#define MII_PHYSID1 0x02 /* PHYS ID 1 */
	16	#define MII_PHYSID2 0x03 /* PHYS ID 2 */
	17	#define MII_ADVERTISE 0x04 /* Advertisement control reg */
	18	#define MII_LPA 0x05 /* Link partner ability reg */
	19	#define MII_EXPANSION 0x06 /* Expansion register */
	20	#define MII_DCOUNTER 0x12 /* Disconnect counter */
	21	#define MII_FCSCOUNTER 0x13 /* False carrier counter */
	22	#define MII_NWAYTEST 0x14 /* N-way auto-neg test reg */
	23	#define MII_RERRCOUNTER 0x15 /* Receive error counter */
	24	#define MII_SREVISION 0x16 /* Silicon revision */
	25	#define MII_RESV1 0x17 /* Reserved... */
	26	#define MII_LBRERROR 0x18 /* Lpback, rx, bypass error */
	27	#define MII_PHYADDR 0x19 /* PHY address */
	28	#define MII_RESV2 0x1a /* Reserved... */
	29	#define MII_TPISTATUS 0x1b /* TPI status for 10mbps */
	30	#define MII_NCONFIG 0x1c /* Network interface config */
91975b0f HS	31
91975b0f HS	32	/* Basic mode control register. */
b99c1e6d WD	33	#define BMCR_RESV 0x003f /* Unused... */
	34	#define BMCR_SPEED1000 0x0040 /* MSB of Speed (1000) */
	35	#define BMCR_CTST 0x0080 /* Collision test */
	36	#define BMCR_FULLDPLX 0x0100 /* Full duplex */
	37	#define BMCR_ANRESTART 0x0200 /* Auto negotiation restart */
	38	#define BMCR_ISOLATE 0x0400 /* Disconnect DP83840 from MII */
	39	#define BMCR_PDOWN 0x0800 /* Powerdown the DP83840 */
	40	#define BMCR_ANENABLE 0x1000 /* Enable auto negotiation */
	41	#define BMCR_SPEED100 0x2000 /* Select 100Mbps */
	42	#define BMCR_LOOPBACK 0x4000 /* TXD loopback bits */
	43	#define BMCR_RESET 0x8000 /* Reset the DP83840 */
91975b0f HS	44
91975b0f HS	45	/* Basic mode status register. */
b99c1e6d WD	46	#define BMSR_ERCAP 0x0001 /* Ext-reg capability */
	47	#define BMSR_JCD 0x0002 /* Jabber detected */
	48	#define BMSR_LSTATUS 0x0004 /* Link status */
	49	#define BMSR_ANEGCAPABLE 0x0008 /* Able to do auto-negotiation */
	50	#define BMSR_RFAULT 0x0010 /* Remote fault detected */
	51	#define BMSR_ANEGCOMPLETE 0x0020 /* Auto-negotiation complete */
	52	#define BMSR_RESV 0x07c0 /* Unused... */
	53	#define BMSR_10HALF 0x0800 /* Can do 10mbps, half-duplex */
	54	#define BMSR_10FULL 0x1000 /* Can do 10mbps, full-duplex */
	55	#define BMSR_100HALF 0x2000 /* Can do 100mbps, half-duplex */
	56	#define BMSR_100FULL 0x4000 /* Can do 100mbps, full-duplex */
	57	#define BMSR_100BASE4 0x8000 /* Can do 100mbps, 4k packets */
91975b0f HS	58
91975b0f HS	59	/* Advertisement control register. */
b99c1e6d WD	60	#define ADVERTISE_SLCT 0x001f /* Selector bits */
	61	#define ADVERTISE_CSMA 0x0001 /* Only selector supported */
	62	#define ADVERTISE_10HALF 0x0020 /* Try for 10mbps half-duplex */
	63	#define ADVERTISE_10FULL 0x0040 /* Try for 10mbps full-duplex */
	64	#define ADVERTISE_100HALF 0x0080 /* Try for 100mbps half-duplex */
	65	#define ADVERTISE_100FULL 0x0100 /* Try for 100mbps full-duplex */
	66	#define ADVERTISE_100BASE4 0x0200 /* Try for 100mbps 4k packets */
	67	#define ADVERTISE_RESV 0x1c00 /* Unused... */
	68	#define ADVERTISE_RFAULT 0x2000 /* Say we can detect faults */
	69	#define ADVERTISE_LPACK 0x4000 /* Ack link partners response */
	70	#define ADVERTISE_NPAGE 0x8000 /* Next page bit */
91975b0f HS	71
	72	#define ADVERTISE_FULL (ADVERTISE_100FULL \| ADVERTISE_10FULL \| \
	73	ADVERTISE_CSMA)
	74	#define ADVERTISE_ALL (ADVERTISE_10HALF \| ADVERTISE_10FULL \| \
b99c1e6d	75	ADVERTISE_100HALF \| ADVERTISE_100FULL)
91975b0f HS	76
91975b0f HS	77	/* Link partner ability register. */
b99c1e6d WD	78	#define LPA_SLCT 0x001f /* Same as advertise selector */
	79	#define LPA_10HALF 0x0020 /* Can do 10mbps half-duplex */
	80	#define LPA_10FULL 0x0040 /* Can do 10mbps full-duplex */
	81	#define LPA_100HALF 0x0080 /* Can do 100mbps half-duplex */
	82	#define LPA_100FULL 0x0100 /* Can do 100mbps full-duplex */
	83	#define LPA_100BASE4 0x0200 /* Can do 100mbps 4k packets */
	84	#define LPA_RESV 0x1c00 /* Unused... */
	85	#define LPA_RFAULT 0x2000 /* Link partner faulted */
	86	#define LPA_LPACK 0x4000 /* Link partner acked us */
	87	#define LPA_NPAGE 0x8000 /* Next page bit */
91975b0f HS	88
	89	#define LPA_DUPLEX (LPA_10FULL \| LPA_100FULL)
	90	#define LPA_100 (LPA_100FULL \| LPA_100HALF \| LPA_100BASE4)
	91
	92	/* Expansion register for auto-negotiation. */
b99c1e6d WD	93	#define EXPANSION_NWAY 0x0001 /* Can do N-way auto-nego */
	94	#define EXPANSION_LCWP 0x0002 /* Got new RX page code word */
	95	#define EXPANSION_ENABLENPAGE 0x0004 /* This enables npage words */
	96	#define EXPANSION_NPCAPABLE 0x0008 /* Link partner supports npage */
	97	#define EXPANSION_MFAULTS 0x0010 /* Multiple faults detected */
	98	#define EXPANSION_RESV 0xffe0 /* Unused... */
91975b0f HS	99
91975b0f HS	100	/* N-way test register. */
b99c1e6d WD	101	#define NWAYTEST_RESV1 0x00ff /* Unused... */
	102	#define NWAYTEST_LOOPBACK 0x0100 /* Enable loopback for N-way */
	103	#define NWAYTEST_RESV2 0xfe00 /* Unused... */
91975b0f HS	104
	105
	106	/**
	107	* mii_nway_result
	108	* @negotiated: value of MII ANAR and'd with ANLPAR
	109	*
	110	* Given a set of MII abilities, check each bit and returns the
	111	* currently supported media, in the priority order defined by
	112	* IEEE 802.3u. We use LPA_xxx constants but note this is not the
	113	* value of LPA solely, as described above.
	114	*
	115	* The one exception to IEEE 802.3u is that 100baseT4 is placed
	116	* between 100T-full and 100T-half. If your phy does not support
b99c1e6d	117	* 100T4 this is fine. If your phy places 100T4 elsewhere in the
91975b0f HS	118	* priority order, you will need to roll your own function.
	119	*/
	120	static inline unsigned int mii_nway_result (unsigned int negotiated)
	121	{
	122	unsigned int ret;
	123
	124	if (negotiated & LPA_100FULL)
	125	ret = LPA_100FULL;
	126	else if (negotiated & LPA_100BASE4)
	127	ret = LPA_100BASE4;
	128	else if (negotiated & LPA_100HALF)
	129	ret = LPA_100HALF;
	130	else if (negotiated & LPA_10FULL)
	131	ret = LPA_10FULL;
	132	else
	133	ret = LPA_10HALF;
	134
	135	return ret;
	136	}
	137
	138	/**
	139	* mii_duplex
	140	* @duplex_lock: Non-zero if duplex is locked at full
	141	* @negotiated: value of MII ANAR and'd with ANLPAR
	142	*
	143	* A small helper function for a common case. Returns one
	144	* if the media is operating or locked at full duplex, and
	145	* returns zero otherwise.
	146	*/
	147	static inline unsigned int mii_duplex (unsigned int duplex_lock,
	148	unsigned int negotiated)
	149	{
	150	if (duplex_lock)
	151	return 1;
	152	if (mii_nway_result(negotiated) & LPA_DUPLEX)
	153	return 1;
	154	return 0;
	155	}
	156
	157
	158	#endif /* __LINUX_MII_H__ */