/*      $NetBSD: com_mainbus.c,v 1.13 2018/12/08 17:46:12 thorpej Exp $ */

/*-
 * Copyright (c) 2002 The NetBSD Foundation, Inc.
 * 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 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 <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: com_mainbus.c,v 1.13 2018/12/08 17:46:12 thorpej Exp $");

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>

#include <sys/termios.h>
#include <dev/cons.h>
#include <sys/conf.h>
#include <sys/bus.h>

#include <machine/intr.h>
#include <machine/autoconf.h>
#include <machine/mmeye.h>

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

#ifndef COMCN_SPEED
#define COMCN_SPEED     19200
#endif
#ifndef CONADDR
#define CONADDR         0xa4000000
#endif
#ifndef CONMODE
#define CONMODE ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8) /* 8N1 */
#endif

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

int com_mainbus_match(device_t, cfdata_t , void *);
void com_mainbus_attach(device_t, device_t, void *);
void comcnprobe(struct consdev *);
void comcninit(struct consdev *);

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;

        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 mainbus_attach_args *ma = aux;
        struct com_mainbus_softc *sc = device_private(self);
        struct com_softc *csc = &sc->sc_com;
#if defined(SH7750R)
        const bus_space_tag_t iot = SH3_BUS_SPACE_PCMCIA_IO8;
#else
        const bus_space_tag_t iot = 0;
#endif
        bus_space_handle_t ioh;

        if (!com_is_console(iot, ma->ma_addr1, &ioh))
                if (bus_space_map(iot, ma->ma_addr1, COM_NPORTS, 0, &ioh)) {
                        aprint_error(": can't map i/o space\n");
                        return;
                }
        csc->sc_dev = self;
        csc->sc_frequency = COM_FREQ;
        com_init_regs(&csc->sc_regs, iot, ioh, ma->ma_addr1);

        /* sanity check */
        if (!comprobe1(iot, ioh)) {
                aprint_error(": device problem. don't attach.\n");
                return;
        }

        com_attach_subr(csc);

        mmeye_intr_establish(ma->ma_irq1, IST_LEVEL, IPL_SERIAL, comintr, sc);
}

void
comcnprobe(struct consdev *cp)
{

#ifdef  COMCONSOLE
        cp->cn_pri = CN_REMOTE; /* Force a serial port console */
#else
        cp->cn_pri = CN_NORMAL;
#endif
}

void
comcninit(struct consdev *cp)
{
#if defined(SH7750R)
        const bus_space_tag_t iot = SH3_BUS_SPACE_PCMCIA_IO8;
#else
        const bus_space_tag_t iot = 0;
#endif

        comcnattach(iot, CONADDR, COMCN_SPEED, COM_FREQ, COM_TYPE_NORMAL,
            CONMODE);
}