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mainbus.c revision 1.4 
      1 /* $NetBSD: mainbus.c,v 1.4 2002/09/27 03:17:45 thorpej Exp $ */
      2 
      3 /*
      4  * Copyright (c) 1994,1995 Mark Brinicombe.
      5  * Copyright (c) 1994 Brini.
      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  * 3. All advertising materials mentioning features or use of this software
     17  *    must display the following acknowledgement:
     18  *	This product includes software developed by Brini.
     19  * 4. The name of the company nor the name of the author may be used to
     20  *    endorse or promote products derived from this software without specific
     21  *    prior written permission.
     22  *
     23  * THIS SOFTWARE IS PROVIDED BY BRINI ``AS IS'' AND ANY EXPRESS OR IMPLIED
     24  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
     25  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     26  * IN NO EVENT SHALL BRINI OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
     27  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     28  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
     29  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     33  * SUCH DAMAGE.
     34  *
     35  * RiscBSD kernel project
     36  *
     37  * mainbus.c
     38  *
     39  * mainbus configuration
     40  *
     41  * Created      : 15/12/94
     42  */
     43 
     44 #include <sys/param.h>
     45 #include <sys/systm.h>
     46 #include <sys/kernel.h>
     47 #include <sys/conf.h>
     48 #include <sys/malloc.h>
     49 #include <sys/device.h>
     50 
     51 #if defined(arm32)		/* XXX */
     52 #include <machine/io.h>
     53 #endif
     54 #include <machine/bus.h>
     55 #include <arm/mainbus/mainbus.h>
     56 #include "locators.h"
     57 
     58 /*
     59  * mainbus is a root device so we a bus space tag to pass to children
     60  *
     61  * The tag is provided by mainbus_io.c and mainbus_io_asm.S
     62  */
     63 
     64 extern struct bus_space mainbus_bs_tag;
     65 
     66 /* Prototypes for functions provided */
     67 
     68 static int  mainbusmatch  __P((struct device *, struct cfdata *, void *));
     69 static void mainbusattach __P((struct device *, struct device *, void *));
     70 static int  mainbusprint  __P((void *aux, const char *mainbus));
     71 static int  mainbussearch __P((struct device *, struct cfdata *, void *));
     72 
     73 /* attach and device structures for the device */
     74 
     75 struct cfattach mainbus_ca = {
     76 	sizeof(struct device), mainbusmatch, mainbusattach
     77 };
     78 
     79 /*
     80  * int mainbusmatch(struct device *parent, struct cfdata *cf, void *aux)
     81  *
     82  * Always match for unit 0
     83  */
     84 
     85 static int
     86 mainbusmatch(parent, cf, aux)
     87 	struct device *parent;
     88 	struct cfdata *cf;
     89 	void *aux;
     90 {
     91 	return (1);
     92 }
     93 
     94 /*
     95  * int mainbusprint(void *aux, const char *mainbus)
     96  *
     97  * print routine used during config of children
     98  */
     99 
    100 static int
    101 mainbusprint(aux, mainbus)
    102 	void *aux;
    103 	const char *mainbus;
    104 {
    105 	struct mainbus_attach_args *mb = aux;
    106 
    107 	if (mb->mb_iobase != MAINBUSCF_BASE_DEFAULT)
    108 		printf(" base 0x%x", mb->mb_iobase);
    109 	if (mb->mb_iosize > 1)
    110 		printf("-0x%x", mb->mb_iobase + mb->mb_iosize - 1);
    111 	if (mb->mb_irq != -1)
    112 		printf(" irq %d", mb->mb_irq);
    113 	if (mb->mb_drq != -1)
    114 		printf(" drq 0x%08x", mb->mb_drq);
    115 
    116 /* XXXX print flags */
    117 	return (QUIET);
    118 }
    119 
    120 /*
    121  * int mainbussearch(struct device *parent, struct device *self, void *aux)
    122  *
    123  * search routine used during the config of children
    124  */
    125 
    126 static int
    127 mainbussearch(parent, cf, aux)
    128 	struct device *parent;
    129 	struct cfdata *cf;
    130 	void *aux;
    131 {
    132 	struct mainbus_attach_args mb;
    133 	int tryagain;
    134 
    135 	do {
    136 		if (cf->cf_loc[MAINBUSCF_BASE] == MAINBUSCF_BASE_DEFAULT) {
    137 			mb.mb_iobase = MAINBUSCF_BASE_DEFAULT;
    138 			mb.mb_iosize = 0;
    139 			mb.mb_drq = MAINBUSCF_DACK_DEFAULT;
    140 			mb.mb_irq = MAINBUSCF_IRQ_DEFAULT;
    141 		} else {
    142 			mb.mb_iobase = cf->cf_loc[MAINBUSCF_BASE];
    143 #if defined(arm32) /* XXX */
    144 			mb.mb_iobase += IO_CONF_BASE;
    145 #endif
    146 			mb.mb_iosize = 0;
    147 			mb.mb_drq = cf->cf_loc[MAINBUSCF_DACK];
    148 			mb.mb_irq = cf->cf_loc[MAINBUSCF_IRQ];
    149 		}
    150 		mb.mb_iot = &mainbus_bs_tag;
    151 
    152 		tryagain = 0;
    153 		if (config_match(parent, cf, &mb) > 0) {
    154 			config_attach(parent, cf, &mb, mainbusprint);
    155 /*			tryagain = (cf->cf_fstate == FSTATE_STAR);*/
    156 		}
    157 	} while (tryagain);
    158 
    159 	return (0);
    160 }
    161 
    162 /*
    163  * void mainbusattach(struct device *parent, struct device *self, void *aux)
    164  *
    165  * probe and attach all children
    166  */
    167 
    168 static void
    169 mainbusattach(parent, self, aux)
    170 	struct device *parent;
    171 	struct device *self;
    172 	void *aux;
    173 {
    174 	printf("\n");
    175 
    176 	config_search(mainbussearch, self, NULL);
    177 }
    178 
    179 /* End of mainbus.c */
    180