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      1 /* $NetBSD: rsbus.c,v 1.12 2021/08/07 16:18:40 thorpej Exp $ */
      2 
      3 /*
      4  * Copyright (c) 2002
      5  *	Ichiro FUKUHARA <ichiro (at) ichiro.org>.
      6  * All rights reserved.
      7  *
      8  * Redistribution and use in source and binary forms, with or without
      9  * modification, are permitted provided that the following conditions
     10  * are met:
     11  * 1. Redistributions of source code must retain the above copyright
     12  *    notice, this list of conditions and the following disclaimer.
     13  * 2. Redistributions in binary form must reproduce the above copyright
     14  *    notice, this list of conditions and the following disclaimer in the
     15  *    documentation and/or other materials provided with the distribution.
     16  *
     17  * THIS SOFTWARE IS PROVIDED BY ICHIRO FUKUHARA ``AS IS'' AND ANY EXPRESS OR
     18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     20  * IN NO EVENT SHALL ICHIRO FUKUHARA OR THE VOICES IN HIS HEAD BE LIABLE FOR
     21  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     27  * SUCH DAMAGE.
     28  */
     29 
     30 #include <sys/cdefs.h>
     31 
     32 __KERNEL_RCSID(0, "$NetBSD: rsbus.c,v 1.12 2021/08/07 16:18:40 thorpej Exp $");
     33 
     34 #include <sys/param.h>
     35 #include <sys/systm.h>
     36 #include <sys/device.h>
     37 #include <sys/bus.h>
     38 
     39 #include <acorn32/eb7500atx/rsbus.h>
     40 
     41 #include "locators.h"
     42 
     43 extern struct bus_space rsbus_bs_tag;
     44 
     45 /* Declare prototypes */
     46 
     47 static int	rsbus_match(device_t, cfdata_t, void *);
     48 static void	rsbus_attach(device_t, device_t, void *);
     49 static int	rsbus_print(void *, const char *);
     50 static int	rsbus_search(device_t, cfdata_t,
     51 			     const int *, void *);
     52 
     53 CFATTACH_DECL_NEW(rsbus, sizeof(struct rsbus_softc),
     54     rsbus_match, rsbus_attach, NULL, NULL);
     55 
     56 static int
     57 rsbus_match(device_t parent, cfdata_t cf, void *aux)
     58 {
     59 	return(1);
     60 }
     61 
     62 static void
     63 rsbus_attach(device_t parent, device_t self, void *aux)
     64 {
     65 	struct rsbus_softc *sc = device_private(self);
     66 	sc->sc_iot = &rsbus_bs_tag;
     67 
     68 	printf("\n");
     69 
     70 	/*
     71 	 *  Attach each devices
     72 	 */
     73 	config_search(self, NULL,
     74 	    CFARGS(.search = rsbus_search));
     75 }
     76 
     77 static int
     78 rsbus_search(device_t parent, cfdata_t cf, const int *ldesc, void *aux)
     79 {
     80 	struct rsbus_softc *sc = device_private(parent);
     81 	struct rsbus_attach_args sa;
     82 
     83 	sa.sa_iot = sc->sc_iot;
     84 	sa.sa_addr = cf->cf_loc[RSBUSCF_ADDR];
     85 	sa.sa_size = cf->cf_loc[RSBUSCF_SIZE];
     86 	sa.sa_intr = cf->cf_loc[RSBUSCF_IRQ];
     87 
     88 	if (config_probe(parent, cf, &sa))
     89 		config_attach(parent, cf, &sa, rsbus_print, CFARGS_NONE);
     90 
     91 	return (0);
     92 }
     93 
     94 static int
     95 rsbus_print(void *aux, const char *name)
     96 {
     97         struct rsbus_attach_args *sa = aux;
     98 
     99 	if (sa->sa_size)
    100 		aprint_normal(" addr 0x%lx", sa->sa_addr);
    101 	if (sa->sa_size > 1)
    102 		aprint_normal("-0x%lx", sa->sa_addr + sa->sa_size - 1);
    103 	if (sa->sa_intr > 1)
    104 		aprint_normal(" irq %d", sa->sa_intr);
    105 
    106 	return (UNCONF);
    107 }
    108