/*	$NetBSD: elink3var.h,v 1.21 1998/11/18 18:34:52 thorpej Exp $	*/

/*
 * Copyright (c) 1994 Herb Peyerl <hpeyerl@beer.org>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed by Herb Peyerl.
 * 4. The name of Herb Peyerl may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include "rnd.h"

#if NRND > 0
#include <sys/rnd.h>
#endif

/*
 * Ethernet software status per interface.
 */
struct ep_softc {
	struct device sc_dev;
	void *sc_ih;

	struct ethercom sc_ethercom;	/* Ethernet common part		*/
	struct mii_data sc_mii;		/* MII/media control		*/
	bus_space_tag_t sc_iot;		/* bus cookie			*/
	bus_space_handle_t sc_ioh;	/* bus i/o handle		*/
	bus_space_tag_t sc_memt;	/* RoadRunner only		*/
	bus_space_handle_t sc_memh;	/* RoadRunner only		*/
#define MAX_MBS	8			/* # of mbufs we keep around	*/
	struct mbuf *mb[MAX_MBS];	/* spare mbuf storage.		*/
	int	next_mb;		/* Which mbuf to use next. 	*/
	int	last_mb;		/* Last mbuf.			*/
	int	tx_start_thresh;	/* Current TX_start_thresh.	*/
	int	tx_succ_ok;		/* # packets sent in sequence   */
					/* w/o underrun			*/

	u_int	ep_flags;		/* capabilities flag (from EELINKROM) */
#define ELINK_FLAGS_PNP			0x00001
#define ELINK_FLAGS_FULLDUPLEX		0x00002
#define ELINK_FLAGS_LARGELINKKT		0x00004	/* 4k packet support */
#define ELINK_FLAGS_SLAVEDMA		0x00008
#define ELINK_FLAGS_SECONDDMA		0x00010
#define ELINK_FLAGS_FULLDMA		0x00020
#define ELINK_FLAGS_FRAGMENTDMA		0x00040
#define ELINK_FLAGS_CRC_PASSTHRU		0x00080
#define ELINK_FLAGS_TXDONE			0x00100
#define ELINK_FLAGS_NO_TXLENGTH		0x00200
#define ELINK_FLAGS_RXRELINKEAT		0x00400
#define ELINK_FLAGS_SNOOPING		0x00800
#define ELINK_FLAGS_100MBIT		0x01000
#define ELINK_FLAGS_POWERMGMT		0x02000
#define	ELINK_FLAGS_MII			0x04000
#define	ELINK_FLAGS_USEFIFOBUFFER		0x08000	/* RoadRunner only */
#define	ELINK_FLAGS_USESHAREDMEM		0x10000	/* RoadRunner only */
#define	ELINK_FLAGS_FORCENOWAIT		0x20000	/* RoadRunner only */

	u_short ep_chipset;		/* Chipset family on this board */
#define ELINK_CHIPSET_3C509		0x00	/* PIO: 3c509, 3c589 */
#define ELINK_CHIPSET_VORTEX		0x01	/* 100mbit, single-pkt dma */
#define ELINK_CHIPSET_BOOMERANG		0x02	/* Saner dma plus PIO */
#define	ELINK_CHIPSET_ROADRUNNER		0x03	/* like Boomerang, but for
						   PCMCIA; has shared memory
						   plus FIFO buffer */
#define	ELINK_CHIPSET_CORKSCREW		0x04	/* like Boomerang, but DMA
						   hacked to work w/ ISA */

	u_char	bustype;		/* parent bus type */
#define ELINK_BUS_ISA	  	0x0
#define	ELINK_BUS_PCMCIA	  	0x1
#define	ELINK_BUS_EISA	  	0x2
#define ELINK_BUS_PCI	  	0x3

#define ELINK_IS_BUS_32(a)	((a) & 0x2)
	int ep_pktlenshift;		/* scale factor for pkt lengths */

#if NRND > 0
	rndsource_element_t rnd_source;
#endif

	/* power management hooks */
	int (*enable) __P((struct ep_softc *));
	void (*disable) __P((struct ep_softc *));
	int enabled;
};

u_int16_t epreadeeprom __P((bus_space_tag_t, bus_space_handle_t, int));
void	epconfig __P((struct ep_softc *, u_short, u_int8_t *));

int	epintr __P((void *));
void	epstop __P((struct ep_softc *));

int	epenable __P((struct ep_softc *));
void	epdisable __P((struct ep_softc *));

int	ep_activate __P((struct device *, enum devact));
