/*-
 * SPDX-License-Identifier: BSD-3-Clause
 *
 * Copyright (c) 2001,2002,2003 Søren Schmidt <sos@FreeBSD.org>
 * 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, this list of conditions and the following disclaimer,
 *    without modification, immediately at the beginning of the file.
 * 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. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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/systm.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/bus.h>
#include <sys/bio.h>
#include <sys/malloc.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/stdarg.h>
#include <vm/vm.h>
#include <vm/pmap.h>
#include <machine/resource.h>
#include <machine/bus.h>
#include <sys/rman.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcireg.h>

#include "dev/pst/pst-iop.h"

static int
iop_pci_probe(device_t dev)
{
    /* tested with actual hardware kindly donated by Promise */
    if (pci_get_devid(dev) == 0x19628086 && pci_get_subvendor(dev) == 0x105a) {
        device_set_desc(dev, "Promise SuperTrak SX6000 ATA RAID controller");
        return BUS_PROBE_DEFAULT;
    } 

    /* support the older SuperTrak 100 as well */
    if (pci_get_devid(dev) == 0x19608086 && pci_get_subvendor(dev) == 0x105a) {
        device_set_desc(dev, "Promise SuperTrak 100 ATA RAID controller");
        return BUS_PROBE_DEFAULT;
    } 

    return ENXIO;
}

static int
iop_pci_attach(device_t dev)
{
    struct iop_softc *sc = device_get_softc(dev);
    int rid;

    /* get resources */
    rid = PCIR_BAR(0);
    sc->r_mem = 
        bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE);

    if (!sc->r_mem)
        return ENXIO;

    rid = 0x00;
    sc->r_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
                                       RF_SHAREABLE | RF_ACTIVE);

    /* now setup the infrastructure to talk to the device */
    pci_enable_busmaster(dev);

    sc->ibase = rman_get_virtual(sc->r_mem);
    sc->reg = (struct i2o_registers *)sc->ibase;
    sc->dev = dev;
    mtx_init(&sc->mtx, "pst lock", NULL, MTX_DEF);

    if (!iop_init(sc))
        return 0;
    bus_attach_children(dev);
    return (0);
}

static int
iop_pci_detach(device_t dev)
{
    struct iop_softc *sc = device_get_softc(dev);
    int error;

    error = bus_generic_detach(dev);
    if (error)
            return (error);
    bus_teardown_intr(dev, sc->r_irq, sc->handle);
    bus_release_resource(dev, SYS_RES_IRQ, 0x00, sc->r_irq);
    bus_release_resource(dev, SYS_RES_MEMORY, PCIR_BAR(0), sc->r_mem);
    mtx_destroy(&sc->mtx);
    return (0);
}

static device_method_t pst_pci_methods[] = {
    DEVMETHOD(device_probe,             iop_pci_probe),
    DEVMETHOD(device_attach,            iop_pci_attach),
    DEVMETHOD(device_detach,            iop_pci_detach),
    DEVMETHOD_END
};

static driver_t pst_pci_driver = {
    "pstpci",
    pst_pci_methods,
    sizeof(struct iop_softc),
};

DRIVER_MODULE(pstpci, pci, pst_pci_driver, 0, 0);