/*      $OpenBSD: if_mtd_pci.c,v 1.14 2024/05/24 06:02:56 jsg Exp $     */

/*
 * Copyright (c) 2003 Oleg Safiullin <form@pdp11.org.ru>
 * 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 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 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/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 <dev/mii/miivar.h>

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

#include <dev/ic/mtd8xxreg.h>
#include <dev/ic/mtd8xxvar.h>

static int mtd_pci_match(struct device *, void *, void *);
static void mtd_pci_attach(struct device *, struct device *, void *);


const struct cfattach mtd_pci_ca = {
        sizeof(struct mtd_softc), mtd_pci_match, mtd_pci_attach
};

static const struct pci_matchid mtd_pci_devices[] = {
        { PCI_VENDOR_MYSON, PCI_PRODUCT_MYSON_MTD800 },
        { PCI_VENDOR_MYSON, PCI_PRODUCT_MYSON_MTD803 },
        { PCI_VENDOR_MYSON, PCI_PRODUCT_MYSON_MTD891 },
};


static int
mtd_pci_match(struct device *parent, void *match, void *aux)
{
        return (pci_matchbyid((struct pci_attach_args *)aux, mtd_pci_devices,
            sizeof(mtd_pci_devices) / sizeof(mtd_pci_devices[0])));
}


static void
mtd_pci_attach(struct device *parent, struct device *self, void *aux)
{
        struct mtd_softc *sc = (void *)self;
        struct pci_attach_args *pa = aux;
        pci_intr_handle_t ih;
        const char *intrstr = NULL;
        u_int32_t command;
        bus_size_t iosize;

        sc->sc_devid = PCI_PRODUCT(pa->pa_id);
        command = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG);
        if (sc->sc_devid == PCI_PRODUCT_MYSON_MTD800 &&
            pci_conf_read(pa->pa_pc, pa->pa_tag, MTD_PCI_LOIO) & 0x300) {
                pa->pa_flags &= ~PCI_FLAGS_IO_ENABLED;
                command &= ~PCI_COMMAND_IO_ENABLE;
        }
        pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, command);

        command = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG);
        if (command & PCI_COMMAND_MEM_ENABLE) {
                if (pci_mapreg_map(pa, MTD_PCI_LOMEM, PCI_MAPREG_TYPE_MEM, 0,
                    &sc->sc_bust, &sc->sc_bush, NULL, &iosize, 0)) {
                        printf(": can't map mem space\n");
                        return;
                }
        } else {
                if (pci_mapreg_map(pa, MTD_PCI_LOIO, PCI_MAPREG_TYPE_IO, 0,
                    &sc->sc_bust, &sc->sc_bush, NULL, &iosize, 0)) {
                        printf(": can't map io space\n");
                        return;
                }
        }

        /*
         * Allocate our interrupt.
         */
        if (pci_intr_map(pa, &ih)) {
                printf(": couldn't map interrupt\n");
                bus_space_unmap(sc->sc_bust, sc->sc_bush, iosize);
                return;
        }

        intrstr = pci_intr_string(pa->pa_pc, ih);
        if (pci_intr_establish(pa->pa_pc, ih, IPL_NET, mtd_intr, sc,
            self->dv_xname) == NULL) {
                printf(": couldn't establish interrupt");
                if (intrstr != NULL)
                        printf(" at %s", intrstr);
                printf("\n");
                bus_space_unmap(sc->sc_bust, sc->sc_bush, iosize);
                return;
        }
        printf(": %s", intrstr);

        sc->sc_dmat = pa->pa_dmat;
        mtd_attach(sc);
}