/*      $OpenBSD: if_ti_sbus.c,v 1.5 2022/03/13 13:34:54 mpi Exp $      */
/*
 * Copyright (c) 2009 Mark Kettenis
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

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

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

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

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

#include <dev/sbus/sbusvar.h>

#include <dev/pci/pcireg.h>

#include <dev/ic/tireg.h>
#include <dev/ic/tivar.h>

struct ti_sbus_softc {
        struct ti_softc         tsc_sc;
};

int     ti_sbus_match(struct device *, void *, void *);
void    ti_sbus_attach(struct device *, struct device *, void *);

const struct cfattach ti_sbus_ca = {
        sizeof(struct ti_sbus_softc), ti_sbus_match, ti_sbus_attach
};

int
ti_sbus_match(struct device *parent, void *match, void *aux)
{
        struct sbus_attach_args *sa = aux;

        return (strcmp("SUNW,vge", sa->sa_name) == 0);
}

void
ti_sbus_attach(struct device *parent, struct device *self, void *aux)
{
        struct sbus_attach_args *sa = aux;
        struct ti_sbus_softc *tsc = (void *)self;
        struct ti_softc *sc = &tsc->tsc_sc;
        bus_space_handle_t ioh;

        /* Pass on the bus tags */
        sc->ti_btag = sa->sa_bustag;
        sc->sc_dmatag = sa->sa_dmatag;

        if (sa->sa_nintr < 1) {
                printf(": no interrupt\n");
                return;
        }

        if (sa->sa_nreg < 2) {
                printf(": only %d register sets\n", sa->sa_nreg);
                return;
        }

        if (sbus_bus_map(sa->sa_bustag, sa->sa_reg[1].sbr_slot,
            sa->sa_reg[1].sbr_offset, sa->sa_reg[1].sbr_size,
            0, 0, &sc->ti_bhandle)) {
                printf(": can't map registers\n");
                return;
        }

        if (sbus_bus_map(sa->sa_bustag, sa->sa_reg[0].sbr_slot,
            sa->sa_reg[0].sbr_offset, sa->sa_reg[0].sbr_size,
            0, 0, &ioh)) {
                printf(": can't map registers\n");
                goto unmap;
        }

        bus_intr_establish(sa->sa_bustag, sa->sa_pri, IPL_NET, 0, ti_intr,
            sc, self->dv_xname);

        bus_space_write_4(sa->sa_bustag, ioh, TI_PCI_CMDSTAT, 0x02000006);
        bus_space_write_4(sa->sa_bustag, ioh, TI_PCI_BIST, 0xffffffff);
        bus_space_write_4(sa->sa_bustag, ioh, TI_PCI_LOMEM, 0x00000400);

        bus_space_unmap(sa->sa_bustag, ioh, sa->sa_reg[0].sbr_size);

        sc->ti_sbus = 1;
        if (ti_attach(sc) == 0)
                return;

unmap:
            bus_space_unmap(sa->sa_bustag, sc->ti_bhandle,
                sa->sa_reg[1].sbr_size);
}