/*      $OpenBSD: if_ne_isa.c,v 1.19 2023/09/11 08:41:26 mvs Exp $      */
/*      $NetBSD: if_ne_isa.c,v 1.6 1998/07/05 06:49:13 jonathan Exp $   */

/*-
 * Copyright (c) 1997 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
 * NASA Ames Research Center.
 *
 * 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.
 *
 * 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 "bpfilter.h"

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/mbuf.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <sys/errno.h>
#include <sys/syslog.h>
#include <sys/device.h>

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

#include <netinet/in.h>
#include <netinet/if_ether.h>

#if NBPFILTER > 0
#include <net/bpf.h>
#endif

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

#include <dev/ic/dp8390reg.h>
#include <dev/ic/dp8390var.h>

#include <dev/ic/ne2000reg.h>
#include <dev/ic/ne2000var.h>

#include <dev/ic/rtl80x9reg.h>
#include <dev/ic/rtl80x9var.h>          

#include <dev/isa/isavar.h>

int     ne_isa_match(struct device *, void *, void *);
void    ne_isa_attach(struct device *, struct device *, void *);

struct ne_isa_softc {
        struct  ne2000_softc sc_ne2000;         /* real "ne2000" softc */

        /* ISA-specific goo. */
        void    *sc_ih;                         /* interrupt cookie */
};

const struct cfattach ne_isa_ca = {
        sizeof(struct ne_isa_softc), ne_isa_match, ne_isa_attach
};

int
ne_isa_match(struct device *parent, void *match, void *aux)
{
        struct ne_isa_softc *isc = match;
        struct ne2000_softc *nsc = &isc->sc_ne2000;
        struct dp8390_softc *dsc = &nsc->sc_dp8390;
        struct isa_attach_args *ia = aux;
        bus_space_tag_t nict = ia->ia_iot;
        bus_space_handle_t nich;
        bus_space_tag_t asict;
        bus_space_handle_t asich;

        /* Disallow wildcarded values. */
        if (ia->ia_irq ==  -1 /* ISACF_IRQ_DEFAULT */)
                return (0);
        if (ia->ia_iobase == -1 /* ISACF_PORT_DEFAULT */)
                return (0);

        /* Make sure this is a valid NE[12]000 i/o address. */
        if ((ia->ia_iobase & 0x1f) != 0)
                return (0);

        /* Map i/o space. */
        if (bus_space_map(nict, ia->ia_iobase, NE2000_NPORTS, 0, &nich))
                return (0);

        asict = nict;
        if (bus_space_subregion(nict, nich, NE2000_ASIC_OFFSET,
            NE2000_ASIC_NPORTS, &asich))
                goto out;

        dsc->sc_regt = nict;
        dsc->sc_regh = nich;

        nsc->sc_asict = asict;
        nsc->sc_asich = asich;

        /* Look for an NE2000-compatible card. */
        nsc->sc_type = ne2000_detect(nsc);

        if (nsc->sc_type)
                ia->ia_iosize = NE2000_NPORTS;

 out:
        bus_space_unmap(nict, nich, NE2000_NPORTS);
        return (nsc->sc_type);
}

void
ne_isa_attach(struct device *parent, struct device *self, void *aux)
{
        struct ne_isa_softc *isc = (struct ne_isa_softc *)self;
        struct ne2000_softc *nsc = &isc->sc_ne2000;
        struct dp8390_softc *dsc = &nsc->sc_dp8390;
        struct isa_attach_args *ia = aux;
        bus_space_tag_t nict = ia->ia_iot;
        bus_space_handle_t nich;
        bus_space_tag_t asict = nict;
        bus_space_handle_t asich;
        const char *typestr;

        /* Map i/o space. */
        if (bus_space_map(nict, ia->ia_iobase, NE2000_NPORTS, 0, &nich)) {
                printf("%s: can't map i/o space\n", dsc->sc_dev.dv_xname);
                return;
        }

        if (bus_space_subregion(nict, nich, NE2000_ASIC_OFFSET,
            NE2000_ASIC_NPORTS, &asich)) {
                printf("%s: can't subregion i/o space\n", dsc->sc_dev.dv_xname);
                return;
        }

        dsc->sc_regt = nict;
        dsc->sc_regh = nich;

        nsc->sc_asict = asict;
        nsc->sc_asich = asich;

        switch (nsc->sc_type) {
        case NE2000_TYPE_NE1000:
                typestr = "NE1000";
                break;

        case NE2000_TYPE_NE2000:
                typestr = "NE2000";
                /*
                 * Check for a Realtek 8019.
                 */
                bus_space_write_1(nict, nich, ED_P0_CR,
                    ED_CR_PAGE_0 | ED_CR_STP);
                if (bus_space_read_1(nict, nich, NERTL_RTL0_8019ID0) ==
                                                                RTL0_8019ID0 &&
                    bus_space_read_1(nict, nich, NERTL_RTL0_8019ID1) ==
                                                                RTL0_8019ID1) {
                        typestr = "NE2000 (RTL8019)";
                        dsc->sc_mediachange = rtl80x9_mediachange;
                        dsc->sc_mediastatus = rtl80x9_mediastatus;
                        dsc->init_card = rtl80x9_init_card;
                        dsc->sc_media_init = rtl80x9_media_init;
                }
                break;

        default:
                printf(": where did the card go?!\n");
                return;
        }

        printf(", %s", typestr);

        /* This interface is always enabled. */
        dsc->sc_enabled = 1;

        /*
         * Do generic NE2000 attach.  This will read the station address
         * from the EEPROM.
         */
        ne2000_attach(nsc, NULL);

        /* Establish the interrupt handler. */
        isc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq, IST_EDGE,
            IPL_NET, dp8390_intr, dsc, dsc->sc_dev.dv_xname);
        if (isc->sc_ih == NULL)
                printf(": couldn't establish interrupt handler\n");
}