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      1 /*	$NetBSD: mainbus.c,v 1.22 2021/08/07 16:18:47 thorpej Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 2000 Soren S. Jorvang.  All rights reserved.
      5  *
      6  * Redistribution and use in source and binary forms, with or without
      7  * modification, are permitted provided that the following conditions
      8  * are met:
      9  * 1. Redistributions of source code must retain the above copyright
     10  *    notice, this list of conditions, and the following disclaimer.
     11  * 2. Redistributions in binary form must reproduce the above copyright
     12  *    notice, this list of conditions and the following disclaimer in the
     13  *    documentation and/or other materials provided with the distribution.
     14  *
     15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     16  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     18  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     21  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     25  * SUCH DAMAGE.
     26  */
     27 
     28 #include <sys/cdefs.h>
     29 __KERNEL_RCSID(0, "$NetBSD: mainbus.c,v 1.22 2021/08/07 16:18:47 thorpej Exp $");
     30 
     31 #include <sys/param.h>
     32 #include <sys/systm.h>
     33 #include <sys/device.h>
     34 
     35 #include <mips/cpuregs.h>
     36 
     37 #include <machine/autoconf.h>
     38 
     39 #include "locators.h"
     40 
     41 static int	mainbus_match(device_t, cfdata_t, void *);
     42 static void	mainbus_attach(device_t, device_t, void *);
     43 static int	mainbus_search(device_t, cfdata_t,
     44 			       const int *, void *);
     45 int		mainbus_print(void *, const char *);
     46 
     47 CFATTACH_DECL_NEW(mainbus, 0,
     48     mainbus_match, mainbus_attach, NULL, NULL);
     49 
     50 extern struct mips_bus_space cobalt_bs;
     51 
     52 static int
     53 mainbus_match(device_t parent, cfdata_t cf, void *aux)
     54 {
     55 
     56 	return 1;
     57 }
     58 
     59 static void
     60 mainbus_attach(device_t parent, device_t self, void *aux)
     61 {
     62 	struct mainbus_attach_args ma;
     63 
     64 	aprint_normal("\n");
     65 
     66 	config_search(self, &ma,
     67 	    CFARGS(.search = mainbus_search));
     68 }
     69 
     70 static int
     71 mainbus_search(device_t parent, cfdata_t cf, const int *ldesc, void *aux)
     72 {
     73 	struct mainbus_attach_args *ma = aux;
     74 
     75 	do {
     76 		ma->ma_addr = cf->cf_loc[MAINBUSCF_ADDR];
     77 		ma->ma_iot = &cobalt_bs;
     78 		ma->ma_level = cf->cf_loc[MAINBUSCF_LEVEL];
     79 		ma->ma_irq = cf->cf_loc[MAINBUSCF_IRQ];
     80 		if (config_probe(parent, cf, ma))
     81 			config_attach(parent, cf, ma, mainbus_print, CFARGS_NONE);
     82 	} while (cf->cf_fstate == FSTATE_STAR);
     83 
     84 	return 0;
     85 }
     86 
     87 int
     88 mainbus_print(void *aux, const char *pnp)
     89 {
     90 	struct mainbus_attach_args *ma = aux;
     91 
     92 	if (pnp != 0)
     93 		return QUIET;
     94 
     95 	if (ma->ma_addr != MAINBUSCF_ADDR_DEFAULT)
     96 		aprint_normal(" addr 0x%"PRIxBUSADDR, ma->ma_addr);
     97 	if (ma->ma_level != MAINBUSCF_LEVEL_DEFAULT)
     98 		aprint_normal(" level %d", ma->ma_level);
     99 	if (ma->ma_irq != MAINBUSCF_IRQ_DEFAULT)
    100 		aprint_normal(" irq %d", ma->ma_irq);
    101 
    102 	return UNCONF;
    103 }
    104