/*	$NetBSD: if_tr_isa.c,v 1.7 2001/11/13 08:01:21 lukem Exp $	*/

/*
 * Copyright (c) 1999 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Onno van der Linden.
 *
 * 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 The NetBSD
 *        Foundation, Inc. and its contributors.
 * 4. Neither the name of The NetBSD Foundation nor the names of its 
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
 * ``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 FOUNDATION OR CONTRIBUTORS
 * 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/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: if_tr_isa.c,v 1.7 2001/11/13 08:01:21 lukem Exp $");

#undef TRISADEBUG

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/socket.h>
#include <sys/device.h>

#include <net/if.h>
#include <net/if_ether.h>
#include <net/if_media.h>

#include <machine/cpu.h>
#include <machine/bus.h>
#include <machine/intr.h>

#include <dev/isa/isavar.h>

#include <dev/ic/tropicreg.h>
#include <dev/ic/tropicvar.h>


int	tr_isa_probe __P((struct device *, struct cfdata *, void *));
int	trtcm_isa_probe __P((struct device *, struct cfdata *, void *));
int	tribm_isa_probe __P((struct device *, struct cfdata *, void *));
void	tr_isa_attach __P((struct device *, struct device *, void *));
int	tr_isa_map_io __P((struct isa_attach_args *, bus_space_handle_t *,
	    bus_space_handle_t *));
void	tr_isa_unmap_io __P((struct isa_attach_args *, bus_space_handle_t,
	    bus_space_handle_t));
int	trtcm_isa_mediachange __P((struct tr_softc *));
void	trtcm_isa_mediastatus __P((struct tr_softc *, struct ifmediareq *));
#ifdef TRISADEBUG
void	tr_isa_dumpaip __P((bus_space_tag_t, bus_space_handle_t));
#endif

/*
 * List of manufacturer specific probe routines.  Order is important.
 */
int	(*tr_isa_probe_list[])(struct device *, struct cfdata *, void *) = {
		trtcm_isa_probe,
		tribm_isa_probe,
		0
	};

struct cfattach tr_isa_ca = {
	sizeof(struct tr_softc), tr_isa_probe, tr_isa_attach
};

int
tr_isa_map_io(ia, pioh, mmioh)
struct isa_attach_args *ia;
bus_space_handle_t *pioh, *mmioh;
{
	bus_size_t mmio;
	u_int8_t s;

	if (bus_space_map(ia->ia_iot, ia->ia_iobase, ia->ia_iosize, 0, pioh)) {
		printf("tr_isa_map_io: can't map PIO ports\n");
		return 1;
	}

	/* Read adapter switches and calculate addresses of MMIO. */
	s = bus_space_read_1(ia->ia_iot, *pioh, TR_SWITCH);

	if ((s & 0xfc) < ((TR_MMIO_MINADDR - TR_MMIO_OFFSET) >> 11) ||
	    (s & 0xfc) > ((TR_MMIO_MAXADDR - TR_MMIO_OFFSET) >> 11)) {
		bus_space_unmap(ia->ia_iot, *pioh, ia->ia_iosize);
		return 1;
	}

	mmio = ((s & 0xfc) << 11) + TR_MMIO_OFFSET;
	if (bus_space_map(ia->ia_memt, mmio, TR_MMIO_SIZE, 0, mmioh)) {
		printf("tr_isa_map_io: can't map MMIO region 0x%05lx/%d\n",
			mmio, TR_MMIO_SIZE);
		bus_space_unmap(ia->ia_iot, *pioh, ia->ia_iosize);
		return 1;
	}
	return 0;
}

void
tr_isa_unmap_io(ia, pioh, mmioh)
struct isa_attach_args *ia;
bus_space_handle_t pioh, mmioh;
{
	bus_space_unmap(ia->ia_memt, mmioh, TR_MMIO_SIZE);
	bus_space_unmap(ia->ia_iot, pioh, ia->ia_iosize);
}

static u_char tr_isa_id[] = {
	5, 0, 4, 9, 4, 3, 4, 15, 3, 6, 3, 1, 3, 1, 3, 0, 3, 9, 3, 9, 3, 0, 2, 0
};

/*
 * XXX handle multiple IBM TR cards (sram mapping !!)
 */

int
tr_isa_probe(parent, match, aux)
	struct device *parent;
	struct cfdata *match;
	void *aux;
{
	struct isa_attach_args *ia = aux;
	int	i;
	bus_size_t	tr_id;
	bus_space_handle_t sramh, pioh, mmioh;
	int probecode;
	int matched = 0;

	for (i = 0; tr_isa_probe_list[i] != 0; i++) {
		probecode = tr_isa_probe_list[i](parent, match, aux);
		if (probecode < 0)
			return 0;	/* Fail instantly. */
		if (probecode > 0)
			break;		/* We have a match. */
	}
	if (tr_isa_probe_list[i] == 0)
		return 0;		/* Nothing matched. */
	if (tr_isa_map_io(ia, &pioh, &mmioh))
		return 0;
	tr_id = TR_ID_OFFSET;
	matched = 1;
	for (i = 0; i < sizeof(tr_isa_id); i++) {
		if (bus_space_read_1(ia->ia_memt, mmioh, tr_id) !=
		    tr_isa_id[i])
			matched = 0;
		tr_id += 2;
	}
#ifdef TRISADEBUG
	tr_isa_dumpaip(ia->ia_memt, mmioh);
#endif
	tr_isa_unmap_io(ia, pioh, mmioh);
	if (!matched) {
		return 0;
	}
	if (bus_space_map(ia->ia_memt, ia->ia_maddr, ia->ia_msize, 0, &sramh)) {
		printf("tr_isa_probe: can't map shared ram\n");
		return 0;
	}
	bus_space_unmap(ia->ia_memt, sramh, ia->ia_msize);
	return 1;
}

int trtcm_setspeed(struct tr_softc *, int);

void
tr_isa_attach(parent, self, aux)
	struct device *parent, *self;
	void	*aux;
{
	struct tr_softc *sc = (void *) self;
	struct isa_attach_args *ia = aux;

	printf("\n");

	sc->sc_piot = ia->ia_iot;
	sc->sc_memt = ia->ia_memt;
	if (tr_isa_map_io(ia, &sc->sc_pioh, &sc->sc_mmioh)) {
		printf("tr_isa_attach: IO space vanished\n");
		return;
	}
	if (bus_space_map(sc->sc_memt, ia->ia_maddr, ia->ia_msize, 0,
	    &sc->sc_sramh)) {
		printf("tr_isa_attach: shared ram space vanished\n");
		return;
	}
	/* set ACA offset */
	sc->sc_aca = TR_ACA_OFFSET;
	sc->sc_memwinsz = ia->ia_msize;
	sc->sc_maddr = ia->ia_maddr;
	/*
	 * Determine total RAM on adapter and decide how much to use.
	 * XXX Since we don't use RAM paging, use sc_memwinsz for now.
	 */
	sc->sc_memsize = sc->sc_memwinsz;
	sc->sc_memreserved = 0;

	if (tr_reset(sc) != 0)
		return;

	if (ia->ia_aux != NULL) {
		sc->sc_mediastatus = trtcm_isa_mediastatus;
		sc->sc_mediachange = trtcm_isa_mediachange;
	}
	else {
		sc->sc_mediastatus = NULL;
		sc->sc_mediachange = NULL;
	}

	if (tr_attach(sc) != 0)
		return;

/*
 * XXX 3Com 619 can use LEVEL intr
 */
	sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq, IST_EDGE,
					IPL_NET, tr_intr, sc);
}

#ifdef TRISADEBUG
/*
 * Dump the adapters AIP
 */
void
tr_isa_dumpaip(memt, mmioh)
	bus_space_tag_t memt;
	bus_space_handle_t mmioh;
{
	unsigned int off, val;
	printf("AIP contents:");
	for (off=0; off < 256; off++) {
		val = bus_space_read_1(memt, mmioh, TR_MAC_OFFSET + off);
		if ((off % 16) == 0)
			printf("\n");
		printf("%02x ", val);
	}
	printf("\n");
}
#endif