/* $NetBSD: zbbus.c,v 1.4 2021/08/07 16:18:52 thorpej Exp $ */

/*
* Copyright 2000, 2001
* Broadcom Corporation. All rights reserved.
*
* This software is furnished under license and may be used and copied only
* in accordance with the following terms and conditions.  Subject to these
* conditions, you may download, copy, install, use, modify and distribute
* modified or unmodified copies of this software in source and/or binary
* form. No title or ownership is transferred hereby.
*
* 1) Any source code used, modified or distributed must reproduce and
*    retain this copyright notice and list of conditions as they appear in
*    the source file.
*
* 2) No right is granted to use any trade name, trademark, or logo of
*    Broadcom Corporation.  The "Broadcom Corporation" name may not be
*    used to endorse or promote products derived from this software
*    without the prior written permission of Broadcom Corporation.
*
* 3) THIS SOFTWARE IS PROVIDED "AS-IS" AND ANY EXPRESS OR IMPLIED
*    WARRANTIES, INCLUDING BUT NOT LIMITED TO, ANY IMPLIED WARRANTIES OF
*    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR
*    NON-INFRINGEMENT ARE DISCLAIMED. IN NO EVENT SHALL BROADCOM BE LIABLE
*    FOR ANY DAMAGES WHATSOEVER, AND IN PARTICULAR, BROADCOM SHALL NOT BE
*    LIABLE FOR 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), EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: zbbus.c,v 1.4 2021/08/07 16:18:52 thorpej Exp $");

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

#include <mips/sibyte/include/zbbusvar.h>

#include <evbmips/sbmips/systemsw.h>

#include "locators.h"

static int      zbbus_match(device_t, cfdata_t, void *);
static void     zbbus_attach(device_t, device_t, void *);

CFATTACH_DECL_NEW(zbbus, 0,
   zbbus_match, zbbus_attach, NULL, NULL);

static int      zbbus_print(void *, const char *);
static int      zbbus_submatch(device_t, cfdata_t, const int *, void *);
static const char *zbbus_entity_type_name(enum zbbus_entity_type type);

static int      zbbus_attached;

static const struct zbbus_attach_locs sb1250_zbbus_devs[] = {
       {       0,      ZBBUS_ENTTYPE_CPU       },
       {       1,      ZBBUS_ENTTYPE_CPU       },
       {       4,      ZBBUS_ENTTYPE_SCD       },
       {       2,      ZBBUS_ENTTYPE_BRZ       },
       {       3,      ZBBUS_ENTTYPE_OBIO      },
};
static const int sb1250_zbbus_dev_count =
   sizeof sb1250_zbbus_devs / sizeof sb1250_zbbus_devs[0];

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

       if (zbbus_attached)
               return (0);
       return 1;
}

static void
zbbus_attach(device_t parent, device_t self, void *aux)
{
       struct zbbus_attach_args za;
       int i;

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

       sb1250_icu_init();

       for (i = 0; i < sb1250_zbbus_dev_count; i++) {
               memset(&za, 0, sizeof za);
               za.za_locs = sb1250_zbbus_devs[i];
               config_found(self, &za, zbbus_print,
                   CFARGS(.submatch = zbbus_submatch));
       }

       return;
}

int
zbbus_print(void *aux, const char *pnp)
{
       struct zbbus_attach_args *zap = aux;

       if (pnp)
               aprint_normal("%s at %s",
                   zbbus_entity_type_name(zap->za_locs.za_type), pnp);
       aprint_normal(" busid %d", zap->za_locs.za_busid);
       return (UNCONF);
}

static int
zbbus_submatch(device_t parent, cfdata_t cf, const int *ldesc, void *aux)
{
       struct zbbus_attach_args *zap = aux;

       if (cf->cf_loc[ZBBUSCF_BUSID] != ZBBUSCF_BUSID_DEFAULT &&
           cf->cf_loc[ZBBUSCF_BUSID] != zap->za_locs.za_busid)
               return (0);

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

static const char *
zbbus_entity_type_name(enum zbbus_entity_type type)
{

       switch (type) {
       case ZBBUS_ENTTYPE_CPU:
               return ("cpu");
       case ZBBUS_ENTTYPE_SCD:
               return ("sbscd");
       case ZBBUS_ENTTYPE_BRZ:
               return ("sbbrz");
       case ZBBUS_ENTTYPE_OBIO:
               return ("sbobio");
       }
       panic("zbbus_entity_type_name");
       return ("panic");
}