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      1 /*	$NetBSD: mainbus.c,v 1.22 2021/08/07 16:18:55 thorpej Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2001, 2004 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 1.22 2021/08/07 16:18:55 thorpej Exp $");
     31 
     32 #include <sys/param.h>
     33 #include <sys/systm.h>
     34 #include <sys/device.h>
     35 
     36 #include <machine/autoconf.h>
     37 #include <machine/platid.h>
     38 #include <machine/platid_mask.h>
     39 
     40 #include "locators.h"
     41 
     42 static int mainbus_match(device_t, cfdata_t, void *);
     43 static void mainbus_attach(device_t, device_t, void *);
     44 static int mainbus_search(device_t, cfdata_t, const int *, void *);
     45 static int mainbus_print(void *, const char *);
     46 
     47 CFATTACH_DECL_NEW(mainbus, 0,
     48     mainbus_match, mainbus_attach, NULL, NULL);
     49 
     50 static int
     51 mainbus_match(device_t parent, cfdata_t cf, void *aux)
     52 {
     53 
     54 	return (1);
     55 }
     56 
     57 static void
     58 mainbus_attach(device_t parent, device_t self, void *aux)
     59 {
     60 
     61 	aprint_naive("\n");
     62 	aprint_normal("\n");
     63 
     64 	/* CPU  */
     65 	config_found(self,
     66 	    &(struct mainbus_attach_args){.ma_name = "cpu"}, mainbus_print,
     67 	    CFARGS(.iattr = "mainbus"));
     68 
     69 	/* Devices */
     70 	config_search(self, NULL,
     71 	    CFARGS(.search = mainbus_search,
     72 		   .iattr = "mainbus"));
     73 
     74 	/* APM */
     75 	config_found(self, NULL, mainbus_print,
     76 	    CFARGS(.iattr = "hpcapmif"));
     77 
     78 	if (!pmf_device_register(self, NULL, NULL))
     79 		aprint_error_dev(self, "unable to establish power handler\n");
     80 }
     81 
     82 static int
     83 mainbus_search(device_t parent, cfdata_t cf, const int *ldesc, void *aux)
     84 {
     85 	struct mainbus_attach_args maa;
     86 	int locator = cf->cf_loc[MAINBUSCF_ID];
     87 
     88 	if (locator != MAINBUSCF_ID_DEFAULT &&
     89 	    !platid_match(&platid, PLATID_DEREFP(locator)))
     90 		return (0);
     91 
     92 	if (strcmp(cf->cf_name, "cpu") == 0)
     93 		return 0;
     94 
     95 	maa.ma_name = cf->cf_name;
     96 
     97 	if (config_probe(parent, cf, &maa))
     98 		config_attach(parent, cf, &maa, mainbus_print, CFARGS_NONE);
     99 
    100 	return (0);
    101 }
    102 
    103 static int
    104 mainbus_print(void *aux, const char *pnp)
    105 {
    106 
    107 	return (pnp ? QUIET : UNCONF);
    108 }
    109