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obio.c revision 1.1 
      1 /*	$NetBSD: obio.c,v 1.1 2002/03/27 21:51:30 thorpej Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 2001, 2002 Wasabi Systems, Inc.
      5  * All rights reserved.
      6  *
      7  * Written by Jason R. Thorpe for Wasabi Systems, Inc.
      8  *
      9  * Redistribution and use in source and binary forms, with or without
     10  * modification, are permitted provided that the following conditions
     11  * are met:
     12  * 1. Redistributions of source code must retain the above copyright
     13  *    notice, this list of conditions and the following disclaimer.
     14  * 2. Redistributions in binary form must reproduce the above copyright
     15  *    notice, this list of conditions and the following disclaimer in the
     16  *    documentation and/or other materials provided with the distribution.
     17  * 3. All advertising materials mentioning features or use of this software
     18  *    must display the following acknowledgement:
     19  *	This product includes software developed for the NetBSD Project by
     20  *	Wasabi Systems, Inc.
     21  * 4. The name of Wasabi Systems, Inc. may not be used to endorse
     22  *    or promote products derived from this software without specific prior
     23  *    written permission.
     24  *
     25  * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
     26  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     27  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     28  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL WASABI SYSTEMS, INC
     29  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     30  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     31  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     32  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     33  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     34  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     35  * POSSIBILITY OF SUCH DAMAGE.
     36  */
     37 
     38 /*
     39  * On-board device autoconfiguration support for Intel IQ80321
     40  * evaluation boards.
     41  */
     42 
     43 #include <sys/param.h>
     44 #include <sys/systm.h>
     45 #include <sys/device.h>
     46 
     47 #include <machine/autoconf.h>
     48 #include <machine/bus.h>
     49 
     50 #include <arm/xscale/i80321reg.h>
     51 
     52 #include <evbarm/iq80321/iq80321reg.h>
     53 #include <evbarm/iq80321/obiovar.h>
     54 
     55 #include "locators.h"
     56 
     57 int	obio_match(struct device *, struct cfdata *, void *);
     58 void	obio_attach(struct device *, struct device *, void *);
     59 
     60 struct cfattach obio_ca = {
     61 	sizeof(struct device), obio_match, obio_attach,
     62 };
     63 
     64 int	obio_print(void *, const char *);
     65 int	obio_submatch(struct device *, struct cfdata *, void *);
     66 
     67 /* there can be only one */
     68 int	obio_found;
     69 
     70 struct {
     71 	const char *od_name;
     72 	bus_addr_t od_addr;
     73 	int od_irq;
     74 } obio_devices[] =
     75 {
     76 	{ "com",	IQ80321_UART1,		ICU_INT_XINT(1) },
     77 
     78 	{ NULL,		0,			0 },
     79 };
     80 
     81 int
     82 obio_match(struct device *parent, struct cfdata *cf, void *aux)
     83 {
     84 #if 0
     85 	struct mainbus_attach_args *ma = aux;
     86 #endif
     87 
     88 	if (obio_found)
     89 		return (0);
     90 
     91 #if 1
     92 	/* XXX Shoot arch/arm/mainbus in the head. */
     93 	return (1);
     94 #else
     95 	if (strcmp(cf->cf_driver->cd_name, ma->ma_name) == 0)
     96 		return (1);
     97 
     98 	return (0);
     99 #endif
    100 }
    101 
    102 void
    103 obio_attach(struct device *parent, struct device *self, void *aux)
    104 {
    105 	struct obio_attach_args oba;
    106 	int i;
    107 
    108 	obio_found = 1;
    109 
    110 	printf("\n");
    111 
    112 	for (i = 0; obio_devices[i].od_name != NULL; i++) {
    113 		oba.oba_name = obio_devices[i].od_name;
    114 		oba.oba_st = &obio_bs_tag;
    115 		oba.oba_addr = obio_devices[i].od_addr;
    116 		oba.oba_irq = obio_devices[i].od_irq;
    117 		(void) config_found_sm(self, &oba, obio_print, obio_submatch);
    118 	}
    119 }
    120 
    121 int
    122 obio_print(void *aux, const char *pnp)
    123 {
    124 	struct obio_attach_args *oba = aux;
    125 
    126 	if (pnp)
    127 		printf("%s at %s", oba->oba_name, pnp);
    128 
    129 	printf(" addr 0x%08lx", oba->oba_addr);
    130 
    131 	return (UNCONF);
    132 }
    133 
    134 int
    135 obio_submatch(struct device *parent, struct cfdata *cf, void *aux)
    136 {
    137 	struct obio_attach_args *oba = aux;
    138 
    139 	if (cf->cf_loc[OBIOCF_ADDR] != OBIOCF_ADDR_DEFAULT &&
    140 	    cf->cf_loc[OBIOCF_ADDR] != oba->oba_addr)
    141 		return (0);
    142 
    143 	return ((*cf->cf_attach->ca_match)(parent, cf, aux));
    144 }
    145