/* $NetBSD: mainbus.c,v 1.4 2021/08/07 16:18:51 thorpej Exp $ */

/*-
 * Copyright (c) 2021 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Simon Burge.
 *
 * 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: mainbus.c,v 1.4 2021/08/07 16:18:51 thorpej Exp $");

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

#include <evbmips/mipssim/autoconf.h>
#include <evbmips/mipssim/mipssimreg.h>
#include <evbmips/mipssim/mipssimvar.h>

static int      mainbus_match(device_t, cfdata_t, void *);
static void     mainbus_attach(device_t, device_t, void *);
static int      mainbus_print(void *, const char *);

CFATTACH_DECL_NEW(mainbus, 0,
    mainbus_match, mainbus_attach, NULL, NULL);

/* There can be only one. */
static int      mainbus_found;

struct mainbusdev {
        const char *md_name;
        paddr_t md_addr;
        int md_irq;
};

static struct mainbusdev mainbusdevs[] = {
        { "cpu",                                        },
        { "com",        MIPSSIM_UART0_ADDR,     2       },
#ifdef notyet
        { "mipsnet",    MIPSSIM_MIPSNET0_ADDR,  0       },
#endif
        { NULL,         }
};

static int
mainbus_match(device_t parent, cfdata_t match, void *aux)
{

        if (mainbus_found)
                return (0);

        return (1);
}

static void
mainbus_attach(device_t parent, device_t self, void *aux)
{
        struct mainbus_attach_args maa;
        struct mipssim_config *mcp = &mipssim_configuration;
        const struct mainbusdev *md;

        mainbus_found = 1;
        printf("\n");

        /* attach children */
        for (md = mainbusdevs; md->md_name != NULL; md++) {
                maa.ma_name = md->md_name;
                maa.ma_addr = md->md_addr;
                maa.ma_irq = md->md_irq;
                maa.ma_iot = &mcp->mc_iot;
                maa.ma_dmat = &mcp->mc_dmat;
                config_found(self, &maa, mainbus_print, CFARGS_NONE);
        }

        /* attach virtio children */
        for (int i = 0; i < VIRTIO_NUM_TRANSPORTS; i++) {
                maa.ma_name = "virtio";
                maa.ma_addr = MIPSSIM_VIRTIO_ADDR + VIRTIO_STRIDE * i;
                maa.ma_irq  = 1;
                maa.ma_iot  = &mcp->mc_iot;
                maa.ma_dmat = &mcp->mc_dmat;
                config_found(self, &maa, mainbus_print, CFARGS_NONE);
        }
}

static int
mainbus_print(void *aux, const char *pnp)
{

        return (QUIET);
}