/*-
 * Copyright (c) 1997-2001 Granch, Ltd. All rights reserved.
 * Author: Denis I.Timofeev <timofeev@granch.ru>
 *
 * Redistributon 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 unmodified, 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 AUTHOR 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 AUTHOR 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 NEIGENCE 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/systm.h>
#include <sys/socket.h>
#include <sys/bus.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <machine/bus.h>
#include <machine/resource.h>
#include <sys/rman.h>
#include <sys/malloc.h>

#include <net/if.h>
#include <net/ethernet.h>
#include <net/if_arp.h>

#include <dev/pci/pcivar.h>
#include <dev/pci/pcireg.h>

#include <dev/sbni/if_sbnireg.h>
#include <dev/sbni/if_sbnivar.h>

static int      sbni_pci_probe(device_t);
static int      sbni_pci_attach(device_t);
static int      sbni_pci_detach(device_t);

static device_method_t sbni_pci_methods[] = {
        /* Device interface */
        DEVMETHOD(device_probe, sbni_pci_probe),
        DEVMETHOD(device_attach, sbni_pci_attach),
        DEVMETHOD(device_detach, sbni_pci_detach),
        DEVMETHOD_END
};

static driver_t sbni_pci_driver = {
        "sbni",
        sbni_pci_methods,
        sizeof(struct sbni_softc)
};

DRIVER_MODULE(sbni, pci, sbni_pci_driver, 0, 0);
MODULE_DEPEND(sbni, pci, 1, 1, 1);

static int
sbni_pci_probe(device_t dev)
{
        struct sbni_softc  *sc;

        if (pci_get_vendor(dev) != SBNI_PCI_VENDOR ||
            pci_get_device(dev) != SBNI_PCI_DEVICE)
                return (ENXIO);

        sc = device_get_softc(dev);
        if (pci_get_subdevice(dev) == 2) {
                sc->slave_sc = malloc(sizeof(struct sbni_softc),
                                      M_DEVBUF, M_NOWAIT | M_ZERO);
                if (!sc->slave_sc)
                        return (ENOMEM);
                device_set_desc(dev, "Granch SBNI12/PCI Dual adapter");
        } else
                device_set_desc(dev, "Granch SBNI12/PCI adapter");

        sc->io_rid = PCIR_BAR(0);
        sc->io_res = bus_alloc_resource_any(dev, SYS_RES_IOPORT,
                                            &sc->io_rid, RF_ACTIVE);
        if (!sc->io_res) {
                device_printf(dev, "cannot allocate io ports!\n");
                if (sc->slave_sc)
                        free(sc->slave_sc, M_DEVBUF);
                return (ENOENT);
        }

        if (sc->slave_sc) {
                sc->slave_sc->io_res = sc->io_res;
                sc->slave_sc->io_off = 4;
        }
        if (sbni_probe(sc) != 0) {
                sbni_release_resources(sc);
                if (sc->slave_sc)
                        free(sc->slave_sc, M_DEVBUF);
                return (ENXIO);
        }

        return (0);
}

static int
sbni_pci_attach(device_t dev)
{
        struct sbni_softc *sc;
        struct sbni_flags flags;
        int error;

        sc = device_get_softc(dev);
        sc->dev = dev;

        sc->irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->irq_rid,
                                             RF_SHAREABLE);

        if (sc->irq_res == NULL) {
                device_printf(dev, "cannot claim irq!\n");
                error = ENOENT;
                goto attach_failed;
        }

        memset(&flags, 0, sizeof(flags));

        sbni_attach(sc, device_get_unit(dev) * 2, flags);
        if (sc->slave_sc)
                sbni_attach(sc->slave_sc, device_get_unit(dev) * 2 + 1, flags);

        if (sc->irq_res) {
                error = bus_setup_intr(dev, sc->irq_res, INTR_TYPE_NET |
                    INTR_MPSAFE, NULL, sbni_intr, sc, &sc->irq_handle);
                if (error) {
                        device_printf(dev, "bus_setup_intr\n");
                        sbni_detach(sc);
                        if (sc->slave_sc)
                                sbni_detach(sc);
                        goto attach_failed;
                }
        }
        return (0);

attach_failed:
        sbni_release_resources(sc);
        if (sc->slave_sc)
                free(sc->slave_sc, M_DEVBUF);
        return (error);
}

static int
sbni_pci_detach(device_t dev)
{
        struct sbni_softc *sc;

        sc = device_get_softc(dev);
        sbni_detach(sc);
        if (sc->slave_sc)
                sbni_detach(sc);

        sbni_release_resources(sc);
        if (sc->slave_sc)
                free(sc->slave_sc, M_DEVBUF);
        return (0);
}