/* $NetBSD: obio.c,v 1.6 2021/08/07 16:18:51 thorpej Exp $ */

/*
* Copyright 2002 Wasabi Systems, Inc.
* All rights reserved.
*
* Written by Simon Burge for Wasabi Systems, Inc.
*
* 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.
* 3. All advertising materials mentioning features or use of this software
*    must display the following acknowledgement:
*      This product includes software developed for the NetBSD Project by
*      Wasabi Systems, Inc.
* 4. The name of Wasabi Systems, Inc. may not be used to endorse
*    or promote products derived from this software without specific prior
*    written permission.
*
* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``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 WASABI SYSTEMS, INC
* 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: obio.c,v 1.6 2021/08/07 16:18:51 thorpej Exp $");

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

#include <sys/bus.h>

#include <mips/cache.h>
#include <mips/cpuregs.h>

#include <evbmips/alchemy/board.h>
#include <evbmips/alchemy/obiovar.h>

#include "locators.h"

static int      obio_match(device_t, cfdata_t, void *);
static void     obio_attach(device_t, device_t, void *);
static int      obio_submatch(device_t, cfdata_t, const int *, void *);
static int      obio_print(void *, const char *);

CFATTACH_DECL_NEW(obio, 0,
   obio_match, obio_attach, NULL, NULL);

/* There can be only one. */
static int      obio_found = 0;

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

       if (obio_found)
               return (0);

       return (1);
}

static void
obio_attach(device_t parent, device_t self, void *aux)
{
       struct obio_attach_args oa;
       const struct obiodev *od;
       const struct alchemy_board *board;

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

       board = board_info();
       for (od = board->ab_devices; od->od_name != NULL; od++) {
               oa.oba_name = od->od_name;
               oa.oba_addr = od->od_addr;
               oa.oba_irq = od->od_irq;
               config_found(self, &oa, obio_print,
                   CFARGS(.submatch = obio_submatch));
       }
}

static int
obio_submatch(device_t parent, cfdata_t cf,
             const int *ldesc, void *aux)
{
       struct obio_attach_args *oa = aux;

       if (cf->cf_loc[OBIOCF_ADDR] != OBIOCF_ADDR_DEFAULT &&
           cf->cf_loc[OBIOCF_ADDR] != oa->oba_addr)
               return (0);

       return (config_match(parent, cf, aux));
}

static int
obio_print(void *aux, const char *pnp)
{
       struct obio_attach_args *oa = aux;

       if (pnp)
               aprint_normal("%s at %s", oa->oba_name, pnp);
       if (oa->oba_addr != OBIOCF_ADDR_DEFAULT)
               aprint_normal(" addr 0x%"PRIxBUSADDR, oa->oba_addr);

       return (UNCONF);
}