/*    $OpenBSD: if_sn_nubus.c,v 1.18 2006/03/23 04:10:13 brad Exp $  */
/*    $NetBSD: if_sn_nubus.c,v 1.13 1997/05/11 19:11:34 scottr Exp $  */
/*
 * Copyright (C) 1997 Allen Briggs
 * 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 Allen Briggs
 * 4. The name of the author 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 <sys/param.h>
#include <sys/device.h>
#include <sys/errno.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <sys/syslog.h>
#include <sys/systm.h>

#include <net/if.h>

#ifdef INET
#include <netinet/in.h>
#include <netinet/if_ether.h>
#endif

#include <machine/bus.h>
#include <machine/viareg.h>

#include <mac68k/dev/nubus.h>
#include <mac68k/dev/if_snreg.h>
#include <mac68k/dev/if_snvar.h>

#define	INTERFACE_NAME_LEN	32

static int	sn_nubus_match(struct device *, void *, void *);
static void	sn_nubus_attach(struct device *, struct device *, void *);
static int	sn_nb_card_vendor(bus_space_tag_t, bus_space_handle_t,
		    struct nubus_attach_args *);

struct cfattach sn_nubus_ca = {
	sizeof(struct sn_softc), sn_nubus_match, sn_nubus_attach
};


static int
sn_nubus_match(struct device *parent, void *cf, void *aux)
{
	struct nubus_attach_args *na = (struct nubus_attach_args *) aux;
	bus_space_handle_t bsh;
	int rv;

	if (bus_space_map(na->na_tag,
	    NUBUS_SLOT2PA(na->slot), NBMEMSIZE, 0, &bsh))
		return (0);

	rv = 0;

	if (na->category == NUBUS_CATEGORY_NETWORK &&
	    na->type == NUBUS_TYPE_ETHERNET) {
		switch (sn_nb_card_vendor(na->na_tag, bsh, na)) {
		default:
			break;

		case SN_VENDOR_APPLE:
		case SN_VENDOR_APPLE16:
		case SN_VENDOR_ASANTELC:
		case SN_VENDOR_DAYNA:
			rv = 1;
			break;
		}
	}

	bus_space_unmap(na->na_tag, bsh, NBMEMSIZE);

	return (rv);
}

/*
 * Install interface into kernel networking data structures
 */
static void
sn_nubus_attach(struct device *parent, struct device *self, void *aux)
{
	struct sn_softc *sc = (void *)self;
	struct nubus_attach_args *na = (struct nubus_attach_args *)aux;
	int i, success, offset;
	bus_space_tag_t	bst;
	bus_space_handle_t bsh, tmp_bsh;
	u_int8_t myaddr[ETHER_ADDR_LEN];
	char cardtype[INTERFACE_NAME_LEN];	/* type string */

	(void)(&offset);	/* Work around lame gcc initialization bug */

	bst = na->na_tag;
	if (bus_space_map(bst, NUBUS_SLOT2PA(na->slot), NBMEMSIZE, 0, &bsh)) {
		printf(": failed to map memory space.\n");
		return;
	}

	sc->sc_regt = bst;

	strncpy(cardtype, nubus_get_card_name(bst, bsh, na->fmt),
	    INTERFACE_NAME_LEN);

	success = 0;

	sc->slotno = na->slot;

	switch (sn_nb_card_vendor(bst, bsh, na)) {
	case SN_VENDOR_DAYNA:
		sc->snr_dcr = DCR_ASYNC | DCR_WAIT0 |
		    DCR_DMABLOCK | DCR_RFT16 | DCR_TFT16;
		sc->snr_dcr2 = 0;
		sc->bitmode = 1;	/* 32 bit card */

		if (bus_space_subregion(bst, bsh,
		    0x00180000, SN_REGSIZE, &sc->sc_regh)) {
			printf(": failed to map register space.\n");
			break;
		}

		if (bus_space_subregion(bst, bsh,
		    0x00ffe004, ETHER_ADDR_LEN, &tmp_bsh)) {
			printf(": failed to map ROM space.\n");
			break;
		}

		sn_get_enaddr(bst, tmp_bsh, 0, myaddr);

		offset = 2;
		success = 1;
		break;

	case SN_VENDOR_APPLE:
		sc->snr_dcr = DCR_ASYNC | DCR_WAIT0 |
		    DCR_DMABLOCK | DCR_RFT16 | DCR_TFT16;
		sc->snr_dcr2 = 0;
		sc->bitmode = 1; /* 32 bit card */

		if (bus_space_subregion(bst, bsh,
		    0x0, SN_REGSIZE, &sc->sc_regh)) {
			printf(": failed to map register space.\n");
			break;
		}

		if (bus_space_subregion(bst, bsh,
		    0x40000, ETHER_ADDR_LEN, &tmp_bsh)) {
			printf(": failed to map ROM space.\n");
			break;
		}

		sn_get_enaddr(bst, tmp_bsh, 0, myaddr);

		offset = 0;
		success = 1;
		break;

	case SN_VENDOR_APPLE16:
		sc->snr_dcr = DCR_ASYNC | DCR_WAIT0 | DCR_EXBUS |
			DCR_DMABLOCK | DCR_PO1 | DCR_RFT16 | DCR_TFT16;
		sc->snr_dcr2 = 0;
		sc->bitmode = 0; /* 16 bit card */

		if (bus_space_subregion(bst, bsh,
		    0x0, SN_REGSIZE, &sc->sc_regh)) {
			printf(": failed to map register space.\n");
			break;
		}

		if (bus_space_subregion(bst, bsh,
		    0x40000, ETHER_ADDR_LEN, &tmp_bsh)) {
			printf(": failed to map ROM space.\n");
			break;
		}

		sn_get_enaddr(bst, tmp_bsh, 0, myaddr);

		offset = 0;
		success = 1;
		break;

	case SN_VENDOR_ASANTELC: /* Macintosh LC Ethernet Adapter */
		sc->snr_dcr = DCR_ASYNC | DCR_WAIT0 |
			DCR_DMABLOCK | DCR_PO1 | DCR_RFT16 | DCR_TFT16;
		sc->snr_dcr2 = 0;
		sc->bitmode = 0; /* 16 bit card */

		if (bus_space_subregion(bst, bsh,
		    0x0, SN_REGSIZE, &sc->sc_regh)) {
			printf(": failed to map register space.\n");
			break;
		}

		if (bus_space_subregion(bst, bsh,
		    0x400000, ETHER_ADDR_LEN, &tmp_bsh)) {
			printf(": failed to map ROM space.\n");
			break;
		}

		sn_get_enaddr(bst, tmp_bsh, 0, myaddr);

		offset = 0;
		success = 1;
		break;

	default:
		/*
		 * You can't actually get this default, the snmatch
		 * will fail for unknown hardware. If you're adding support
		 * for a new card, the following defaults are a
		 * good starting point.
		 */
		sc->snr_dcr = DCR_SYNC | DCR_WAIT0 | DCR_DW32 |
		    DCR_DMABLOCK | DCR_RFT16 | DCR_TFT16;
		sc->snr_dcr2 = 0;
		success = 0;
		printf(": unknown card: attachment incomplete.\n");
	}

	if (!success) {
		bus_space_unmap(bst, bsh, NBMEMSIZE);
		return;
	}

	/* Regs are addressed as words, big endian. */
	for (i = 0; i < SN_NREGS; i++) {
		sc->sc_reg_map[i] = (bus_size_t)((i * 4) + offset);
	}

	printf(": %s, ", cardtype);

	/* snsetup returns 1 if something fails */
	if (snsetup(sc, myaddr)) {
		bus_space_unmap(bst, bsh, NBMEMSIZE);
		return;
	}

	add_nubus_intr(sc->slotno, snintr, sc, sc->sc_dev.dv_xname);
}

static int
sn_nb_card_vendor(bus_space_tag_t bst, bus_space_handle_t bsh,
    struct nubus_attach_args *na)
{
	int vendor = SN_VENDOR_UNKNOWN;

	switch (na->drsw) {
	case NUBUS_DRSW_3COM:
		if (na->drhw == NUBUS_DRHW_APPLE_SNT)
			vendor = SN_VENDOR_APPLE;
		else if (na->drhw == NUBUS_DRHW_APPLE_SN)
			vendor = SN_VENDOR_APPLE16;
		break;
	case NUBUS_DRSW_APPLE:
		if (na->drhw == NUBUS_DRHW_ASANTE_LC)
			vendor = SN_VENDOR_ASANTELC;
		else
			vendor = SN_VENDOR_APPLE;
		break;
	case NUBUS_DRSW_TECHWORKS:
		vendor = SN_VENDOR_APPLE;
		break;
	case NUBUS_DRSW_GATOR:
		if (na->drhw == NUBUS_DRHW_KINETICS &&
		    strncmp(nubus_get_card_name(bst, bsh, na->fmt),
		    "EtherPort", 9) != 0)
			vendor = SN_VENDOR_DAYNA;
		break;
	case NUBUS_DRSW_DAYNA:
		vendor = SN_VENDOR_DAYNA;
		break;
	}

	return (vendor);
}