/*      $NetBSD: com_mainbus.c,v 1.15 2018/12/08 17:46:09 thorpej Exp $ */

/*-
 * Copyright (c) 2001 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Jason R. Thorpe.
 *
 * 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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 "opt_algor_p4032.h"

#include <sys/cdefs.h>                  /* RCS ID & Copyright macro defns */

__KERNEL_RCSID(0, "$NetBSD: com_mainbus.c,v 1.15 2018/12/08 17:46:09 thorpej Exp $");

#include <sys/param.h>
#include <sys/bus.h>
#include <sys/conf.h>
#include <sys/device.h>
#include <sys/file.h>
#include <sys/intr.h>
#include <sys/ioctl.h>
#include <sys/kernel.h>
#include <sys/proc.h>
#include <sys/select.h>
#include <sys/syslog.h>
#include <sys/systm.h>
#include <sys/tty.h>
#include <sys/uio.h>

#include <algor/autoconf.h>

#include <dev/ic/comreg.h>
#include <dev/ic/comvar.h>

struct com_mainbus_softc {
        struct  com_softc sc_com;       /* real "com" softc */

        /* mainbus-specific goo. */
        void    *sc_ih;                 /* interrupt handler */
};

static int      com_mainbus_match(device_t, cfdata_t , void *);
static void     com_mainbus_attach(device_t, device_t, void *);

CFATTACH_DECL_NEW(com_mainbus, sizeof(struct com_mainbus_softc),
    com_mainbus_match, com_mainbus_attach, NULL, NULL);

int
com_mainbus_match(device_t parent, cfdata_t match, void *aux)
{
        struct mainbus_attach_args *ma = aux;

        /* Always present. */
        if (strcmp(ma->ma_name, match->cf_name) == 0)
                return (1);

        return (0);
}

void
com_mainbus_attach(device_t parent, device_t self, void *aux)
{
        struct com_mainbus_softc *msc = device_private(self);
        struct com_softc *sc = &msc->sc_com;
        struct mainbus_attach_args *ma = aux;
        bus_space_handle_t ioh;

        sc->sc_dev = self;
        if (com_is_console(ma->ma_st, ma->ma_addr, &ioh) == 0 &&
            bus_space_map(ma->ma_st, ma->ma_addr, COM_NPORTS, 0, &ioh) != 0) {
                aprint_error(": can't map i/o space\n");
                return;
        }
        com_init_regs(&sc->sc_regs, ma->ma_st, ioh, ma->ma_addr);
        sc->sc_frequency = COM_FREQ;

        com_attach_subr(sc);

        msc->sc_ih = (*algor_intr_establish)(ma->ma_irq, comintr, sc);
        if (msc->sc_ih == NULL) {
                aprint_error_dev(self, "unable to establish interrupt\n");
                return;
        }

        if (!pmf_device_register1(self, com_suspend, com_resume, com_cleanup)) {
                aprint_error_dev(self, "could not establish shutdown hook");
        }

}