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      1 /*	$NetBSD: shb.c,v 1.16 2021/08/07 16:19:05 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: shb.c,v 1.16 2021/08/07 16:19:05 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 
     38 extern struct cfdriver shb_cd;
     39 
     40 static int shb_match(device_t, cfdata_t, void *);
     41 static void shb_attach(device_t, device_t, void *);
     42 static int shb_print(void *, const char *);
     43 static int shb_search(device_t, cfdata_t, const int *, void *);
     44 
     45 CFATTACH_DECL_NEW(shb, 0,
     46     shb_match, shb_attach, NULL, NULL);
     47 
     48 
     49 static int
     50 shb_match(device_t parent, cfdata_t cf, void *aux)
     51 {
     52 	struct mainbus_attach_args *ma = aux;
     53 
     54 	if (strcmp(ma->ma_name, shb_cd.cd_name) != 0)
     55 		return (0);
     56 
     57 	return (1);
     58 }
     59 
     60 static void
     61 shb_attach(device_t parent, device_t self, void *aux)
     62 {
     63 
     64 	aprint_naive("\n");
     65 	aprint_normal("\n");
     66 
     67 	config_search(self, NULL,
     68 	    CFARGS(.search = shb_search));
     69 
     70 	/*
     71 	 * XXX: TODO: provide hooks to manage on-chip modules.  For
     72 	 * now register null hooks which is no worse than before.
     73 	 */
     74 	if (!pmf_device_register(self, NULL, NULL))
     75 		aprint_error_dev(self, "unable to establish power handler\n");
     76 }
     77 
     78 static int
     79 shb_search(device_t parent, cfdata_t cf, const int *ldesc, void *aux)
     80 {
     81 
     82 	if (config_probe(parent, cf, NULL))
     83 		config_attach(parent, cf, NULL, shb_print, CFARGS_NONE);
     84 
     85 	return (0);
     86 }
     87 
     88 static int
     89 shb_print(void *aux, const char *pnp)
     90 {
     91 
     92 	return (pnp ? QUIET : UNCONF);
     93 }
     94