sys/dev/ppc/ppc_puc.c

root/sys/dev/ppc/ppc_puc.c
/*-
 * SPDX-License-Identifier: BSD-2-Clause
 *
 * Copyright (c) 2006 Marcel Moolenaar
 * Copyright (c) 1997-2000 Nicolas Souchu
 * Copyright (c) 2001 Alcove - Nicolas Souchu
 * 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.
 * 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/kernel.h>
#include <sys/module.h>
#include <sys/bus.h>

#include <machine/bus.h>

#include <dev/puc/puc_bus.h>

#include <dev/ppbus/ppbconf.h>
#include <dev/ppbus/ppb_msq.h>
#include <dev/ppc/ppcvar.h>
#include <dev/ppc/ppcreg.h>

#include "ppbus_if.h"

static int ppc_puc_probe(device_t dev);

static device_method_t ppc_puc_methods[] = {
        /* device interface */
        DEVMETHOD(device_probe,         ppc_puc_probe),
        DEVMETHOD(device_attach,        ppc_attach),
        DEVMETHOD(device_detach,        ppc_detach),

        /* bus interface */
        DEVMETHOD(bus_read_ivar,        ppc_read_ivar),
        DEVMETHOD(bus_write_ivar,       ppc_write_ivar),
        DEVMETHOD(bus_alloc_resource,   ppc_alloc_resource),
        DEVMETHOD(bus_release_resource, ppc_release_resource),

        /* ppbus interface */
        DEVMETHOD(ppbus_io,             ppc_io),
        DEVMETHOD(ppbus_exec_microseq,  ppc_exec_microseq),
        DEVMETHOD(ppbus_reset_epp,      ppc_reset_epp),
        DEVMETHOD(ppbus_setmode,        ppc_setmode),
        DEVMETHOD(ppbus_ecp_sync,       ppc_ecp_sync),
        DEVMETHOD(ppbus_read,           ppc_read),
        DEVMETHOD(ppbus_write,          ppc_write),
        DEVMETHOD_END
};

static driver_t ppc_puc_driver = {
        ppc_driver_name,
        ppc_puc_methods,
        sizeof(struct ppc_data),
};

static int
ppc_puc_probe(device_t dev)
{
        device_t parent;
        uintptr_t type;

        parent = device_get_parent(dev);
        if (BUS_READ_IVAR(parent, dev, PUC_IVAR_TYPE, &type))
                return (ENXIO);
        if (type != PUC_TYPE_PARALLEL)
                return (ENXIO);

        device_set_desc(dev, "Parallel port");
        return (ppc_probe(dev, 0));
}

DRIVER_MODULE(ppc, puc, ppc_puc_driver, 0, 0);
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