/* This file is part of the UCB release of Plan 9. It is subject to the license
 * terms in the LICENSE file found in the top-level directory of this
 * distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No
 * part of the UCB release of Plan 9, including this file, may be copied,
 * modified, propagated, or distributed except according to the terms contained
 * in the LICENSE file. */

enum {					/* registers */
	Bmcr		= 0x00,		/* Basic Mode Control */
	Bmsr		= 0x01,		/* Basic Mode Status */
	Phyidr1		= 0x02,		/* PHY Identifier #1 */
	Phyidr2		= 0x03,		/* PHY Identifier #2 */
	Anar		= 0x04,		/* Auto-Negotiation Advertisement */
	Anlpar		= 0x05,		/* AN Link Partner Ability */
	Aner		= 0x06,		/* AN Expansion */
	Annptr		= 0x07,		/* AN Next Page TX */
	Annprr		= 0x08,		/* AN Next Page RX */
	Mscr		= 0x09,		/* MASTER-SLAVE Control */
	Mssr		= 0x0a,		/* MASTER-SLAVE Status */
	Esr		= 0x0f,		/* Extended Status */

	NMiiPhyr	= 32,
	NMiiPhy		= 32,
};

enum {					/* Bmcr */
	BmcrSs1		= 0x0040,	/* Speed Select[1] */
	BmcrCte		= 0x0080,	/* Collision Test Enable */
	BmcrDm		= 0x0100,	/* Duplex Mode */
	BmcrRan		= 0x0200,	/* Restart Auto-Negotiation */
	BmcrI		= 0x0400,	/* Isolate */
	BmcrPd		= 0x0800,	/* Power Down */
	BmcrAne		= 0x1000,	/* Auto-Negotiation Enable */
	BmcrSs0		= 0x2000,	/* Speed Select[0] */
	BmcrLe		= 0x4000,	/* Loopback Enable */
	BmcrR		= 0x8000,	/* Reset */
};

enum {					/* Bmsr */
	BmsrEc		= 0x0001,	/* Extended Capability */
	BmsrJd		= 0x0002,	/* Jabber Detect */
	BmsrLs		= 0x0004,	/* Link Status */
	BmsrAna		= 0x0008,	/* Auto-Negotiation Ability */
	BmsrRf		= 0x0010,	/* Remote Fault */
	BmsrAnc		= 0x0020,	/* Auto-Negotiation Complete */
	BmsrPs		= 0x0040,	/* Preamble Suppression Capable */
	BmsrEs		= 0x0100,	/* Extended Status */
	Bmsr100T2HD	= 0x0200,	/* 100BASE-T2 HD Capable */
	Bmsr100T2FD	= 0x0400,	/* 100BASE-T2 FD Capable */
	Bmsr10THD	= 0x0800,	/* 10BASE-T HD Capable */
	Bmsr10TFD	= 0x1000,	/* 10BASE-T FD Capable */
	Bmsr100TXHD	= 0x2000,	/* 100BASE-TX HD Capable */
	Bmsr100TXFD	= 0x4000,	/* 100BASE-TX FD Capable */
	Bmsr100T4	= 0x8000,	/* 100BASE-T4 Capable */
};

enum {					/* Anar/Anlpar */
	Ana10G		= 0x0001,

	Ana10HD		= 0x0020,	/* Advertise 10BASE-T */
	Ana10FD		= 0x0040,	/* Advertise 10BASE-T FD */
	AnaTXHD		= 0x0080,	/* Advertise 100BASE-TX */
	AnaTXFD		= 0x0100,	/* Advertise 100BASE-TX FD */
	AnaT4		= 0x0200,	/* Advertise 100BASE-T4 */
	AnaP		= 0x0400,	/* Pause */
	AnaAP		= 0x0800,	/* Asymmetrical Pause */
	AnaRf		= 0x2000,	/* Remote Fault */
	AnaAck		= 0x4000,	/* Acknowledge */
	AnaNp		= 0x8000,	/* Next Page Indication */
};

enum {					/* Mscr */
	Mscr1000THD	= 0x0100,	/* Advertise 1000BASE-T HD */
	Mscr1000TFD	= 0x0200,	/* Advertise 1000BASE-T FD */
};

enum {					/* Mssr */
	Mssr1000THD	= 0x0400,	/* Link Partner 1000BASE-T HD able */
	Mssr1000TFD	= 0x0800,	/* Link Partner 1000BASE-T FD able */
};

enum {					/* Esr */
	Esr1000THD	= 0x1000,	/* 1000BASE-T HD Capable */
	Esr1000TFD	= 0x2000,	/* 1000BASE-T FD Capable */
	Esr1000XHD	= 0x4000,	/* 1000BASE-X HD Capable */
	Esr1000XFD	= 0x8000,	/* 1000BASE-X FD Capable */
};

struct mii {
	spinlock_t lock;
	int	nphy;
	int	mask;
	struct miiphy*	phy[NMiiPhy];
	struct miiphy*	curphy;

	void*	ctlr;
	int	(*rw)(struct mii*, int unused_int, int, int, int);
};

struct miiphy {
	struct mii*	mii;
	int	phyno;
	int	phyid;
	int	oui;

	int	anar;
	int	fc;
	int	mscr;

	int	link;
	int	speed;
	int	fd;
	int	rfc;
	int	tfc;
};

int miimir(struct mii *mii, int r);
int miimiw(struct mii *mii, int r, int data);
int miireset(struct mii *mii);
int miiane(struct mii *mii, int a, int p, int e);
int miistatus(struct mii *mii);
char *miidumpphy(struct mii *mii, char *p, char *e);
void miidetach(struct mii *mii);
struct mii *miiattach(void *ctlr, int mask, int (*rw)(struct mii *,
						      int unused_int,
						      int unused2, int unused3,
						      int unused4));