NetBSD/sys/arch/arm32/mainbus/mainbus.c

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/* $NetBSD: mainbus.c,v 1.13 1998/01/18 03:42:58 mark Exp $ */
/*
* Copyright (c) 1994,1995 Mark Brinicombe.
* Copyright (c) 1994 Brini.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Brini.
* 4. The name of the company nor the name of the author may be used to
* endorse or promote products derived from this software without specific
* prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY BRINI ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL BRINI OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* RiscBSD kernel project
*
* mainbus.c
*
* mainbus configuration
*
* Created : 15/12/94
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/conf.h>
#include <sys/malloc.h>
#include <sys/device.h>
#include <machine/io.h>
#include <machine/bus.h>
#include <arm32/mainbus/mainbus.h>
#include "locators.h"
/*
* mainbus is a root device so we a bus space tag to pass to children
*
* The tag is provided by mainbus_io.c and mainbus_io_asm.S
*/
extern struct bus_space mainbus_bs_tag;
/* Prototypes for functions provided */
static int mainbusmatch __P((struct device *, struct cfdata *, void *));
static void mainbusattach __P((struct device *, struct device *, void *));
static int mainbusprint __P((void *aux, const char *mainbus));
static int mainbussearch __P((struct device *, struct cfdata *, void *));
/* attach and device structures for the device */
struct cfattach mainbus_ca = {
sizeof(struct device), mainbusmatch, mainbusattach
};
/*
* int mainbusmatch(struct device *parent, struct cfdata *cf, void *aux)
*
* Always match for unit 0
*/
static int
mainbusmatch(parent, cf, aux)
struct device *parent;
struct cfdata *cf;
void *aux;
{
if (cf->cf_unit == 0)
return(1);
return (0);
}
/*
* int mainbusprint(void *aux, const char *mainbus)
*
* print routine used during config of children
*/
static int
mainbusprint(aux, mainbus)
void *aux;
const char *mainbus;
{
struct mainbus_attach_args *mb = aux;
if (mb->mb_iobase != MAINBUSCF_BASE_DEFAULT)
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printf(" base 0x%x", mb->mb_iobase);
if (mb->mb_iosize > 1)
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printf("-0x%x", mb->mb_iobase + mb->mb_iosize - 1);
if (mb->mb_irq != -1)
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printf(" irq %d", mb->mb_irq);
if (mb->mb_drq != -1)
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printf(" drq 0x%08x", mb->mb_drq);
/* XXXX print flags */
return (QUIET);
}
/*
* int mainbussearch(struct device *parent, struct device *self, void *aux)
*
* search routine used during the config of children
*/
static int
mainbussearch(parent, cf, aux)
struct device *parent;
struct cfdata *cf;
void *aux;
{
struct mainbus_attach_args mb;
int tryagain;
do {
if (cf->cf_loc[MAINBUSCF_BASE] == MAINBUSCF_BASE_DEFAULT) {
mb.mb_iobase = MAINBUSCF_BASE_DEFAULT;
mb.mb_iosize = 0;
mb.mb_drq = MAINBUSCF_DACK_DEFAULT;
mb.mb_irq = MAINBUSCF_IRQ_DEFAULT;
} else {
mb.mb_iobase = cf->cf_loc[MAINBUSCF_BASE] + IO_CONF_BASE;
mb.mb_iosize = 0;
mb.mb_drq = cf->cf_loc[MAINBUSCF_DACK];
mb.mb_irq = cf->cf_loc[MAINBUSCF_IRQ];
}
mb.mb_iot = &mainbus_bs_tag;
tryagain = 0;
if ((*cf->cf_attach->ca_match)(parent, cf, &mb) > 0) {
config_attach(parent, cf, &mb, mainbusprint);
/* tryagain = (cf->cf_fstate == FSTATE_STAR);*/
}
} while (tryagain);
return (0);
}
/*
* void mainbusattach(struct device *parent, struct device *self, void *aux)
*
* probe and attach all children
*/
static void
mainbusattach(parent, self, aux)
struct device *parent;
struct device *self;
void *aux;
{
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printf("\n");
config_search(mainbussearch, self, NULL);
}
/* End of mainbus.c */