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      1 /*	$NetBSD: mainbus.c,v 1.6 2021/08/07 16:18:57 thorpej Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2002 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     17  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     18  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     19  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     20  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     21  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     22  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     23  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     24  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     25  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     26  * POSSIBILITY OF SUCH DAMAGE.
     27  */
     28 
     29 #include <sys/cdefs.h>
     30 __KERNEL_RCSID(0, "$NetBSD: mainbus.c,v 1.6 2021/08/07 16:18:57 thorpej Exp $");
     31 
     32 #include "obio.h"
     33 #include "pci.h"
     34 
     35 #include <sys/param.h>
     36 #include <sys/systm.h>
     37 #include <sys/device.h>
     38 
     39 #include <machine/autoconf.h>
     40 #include <sys/bus.h>
     41 
     42 #include <landisk/dev/obiovar.h>
     43 
     44 static int mainbus_match(device_t, cfdata_t, void *);
     45 static void mainbus_attach(device_t, device_t, void *);
     46 
     47 CFATTACH_DECL_NEW(mainbus, 0,
     48     mainbus_match, mainbus_attach, NULL, NULL);
     49 
     50 static int mainbus_print(void *, const char *);
     51 
     52 /* There can be only one. */
     53 static int mainbus_found = 0;
     54 
     55 static int
     56 mainbus_match(device_t parent, cfdata_t cf, void *aux)
     57 {
     58 
     59 	if (mainbus_found)
     60 		return (0);
     61 
     62 	return (1);
     63 }
     64 
     65 static void
     66 mainbus_attach(device_t parent, device_t self, void *aux)
     67 {
     68 	union {
     69 		struct mainbus_attach_args mba_mba;
     70 		struct confargs mba_ca;
     71 		struct obiobus_attach_args mba_oba;
     72 	} mba;
     73 
     74 	mainbus_found = 1;
     75 
     76 	aprint_naive("\n");
     77 	aprint_normal("\n");
     78 
     79 	/* CPU */
     80 	memset(&mba, 0, sizeof(mba));
     81 	mba.mba_ca.ca_name = "cpu";
     82 	mba.mba_ca.ca_node = 0;
     83 	config_found(self, &mba, mainbus_print, CFARGS_NONE);
     84 
     85 #if NPCI > 0
     86 	/* SH PCIC */
     87 	memset(&mba, 0, sizeof(mba));
     88 	mba.mba_mba.ma_name = "shpcic";
     89 	config_found(self, &mba, mainbus_print, CFARGS_NONE);
     90 #endif
     91 
     92 	/* SH bus */
     93 	memset(&mba, 0, sizeof(mba));
     94 	mba.mba_mba.ma_name = "shb";
     95 	config_found(self, &mba, mainbus_print, CFARGS_NONE);
     96 
     97 #if NOBIO > 0
     98 	/* on-board I/O */
     99 	memset(&mba, 0, sizeof(mba));
    100 	mba.mba_oba.oba_busname = "obio";
    101 	mba.mba_oba.oba_iot = &obio_bus_io;
    102 	mba.mba_oba.oba_memt = &obio_bus_mem;
    103 	config_found(self, &mba, mainbus_print, CFARGS_NONE);
    104 #endif
    105 }
    106 
    107 static int
    108 mainbus_print(void *aux, const char *pnp)
    109 {
    110 
    111 	return (pnp ? QUIET : UNCONF);
    112 }
    113