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obio.c revision 1.7 
      1 /*	$NetBSD: obio.c,v 1.7 2005/06/30 17:03:52 drochner Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 2001, 2002, 2003 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 ADI BRH
     40  * evaluation boards.
     41  */
     42 
     43 #include <sys/cdefs.h>
     44 __KERNEL_RCSID(0, "$NetBSD: obio.c,v 1.7 2005/06/30 17:03:52 drochner Exp $");
     45 
     46 #include <sys/param.h>
     47 #include <sys/systm.h>
     48 #include <sys/device.h>
     49 
     50 #include <machine/autoconf.h>
     51 #include <machine/bus.h>
     52 
     53 #include <arm/xscale/beccreg.h>
     54 #include <arm/xscale/beccvar.h>
     55 
     56 #include <evbarm/adi_brh/brhreg.h>
     57 #include <evbarm/adi_brh/obiovar.h>
     58 
     59 #include "locators.h"
     60 
     61 int	obio_match(struct device *, struct cfdata *, void *);
     62 void	obio_attach(struct device *, struct device *, void *);
     63 
     64 CFATTACH_DECL(obio, sizeof(struct device),
     65     obio_match, obio_attach, NULL, NULL);
     66 
     67 int	obio_print(void *, const char *);
     68 int	obio_search(struct device *, struct cfdata *,
     69 		    const locdesc_t *, void *);
     70 
     71 /* there can be only one */
     72 int	obio_found;
     73 
     74 int
     75 obio_match(struct device *parent, struct cfdata *cf, void *aux)
     76 {
     77 #if 0
     78 	struct mainbus_attach_args *ma = aux;
     79 #endif
     80 
     81 	if (obio_found)
     82 		return (0);
     83 
     84 #if 1
     85 	/* XXX Shoot arch/arm/mainbus in the head. */
     86 	return (1);
     87 #else
     88 	if (strcmp(cf->cf_name, ma->ma_name) == 0)
     89 		return (1);
     90 
     91 	return (0);
     92 #endif
     93 }
     94 
     95 void
     96 obio_attach(struct device *parent, struct device *self, void *aux)
     97 {
     98 
     99 	obio_found = 1;
    100 
    101 	aprint_naive("\n");
    102 	aprint_normal("\n");
    103 
    104 	/*
    105 	 * Attach all on-board devices as described in the kernel
    106 	 * configuration file.
    107 	 */
    108 	config_search_ia(obio_search, self, "obio", NULL);
    109 }
    110 
    111 int
    112 obio_print(void *aux, const char *pnp)
    113 {
    114 	struct obio_attach_args *oba = aux;
    115 
    116 	aprint_normal(" addr 0x%08lx", oba->oba_addr);
    117 	if (oba->oba_size != OBIOCF_SIZE_DEFAULT)
    118 		aprint_normal("-0x%08lx", oba->oba_addr + (oba->oba_size - 1));
    119 	if (oba->oba_width != OBIOCF_WIDTH_DEFAULT)
    120 		aprint_normal(" width %d", oba->oba_width);
    121 	if (oba->oba_irq != OBIOCF_IRQ_DEFAULT)
    122 		aprint_normal(" irq %d", oba->oba_irq);
    123 
    124 	return (UNCONF);
    125 }
    126 
    127 int
    128 obio_search(struct device *parent, struct cfdata *cf,
    129 	    const locdesc_t *ldesc, void *aux)
    130 {
    131 	struct obio_attach_args oba;
    132 
    133 	oba.oba_st = &obio_bs_tag;
    134 
    135 	oba.oba_addr = cf->cf_loc[OBIOCF_ADDR];
    136 	oba.oba_size = cf->cf_loc[OBIOCF_SIZE];
    137 	oba.oba_width = cf->cf_loc[OBIOCF_WIDTH];
    138 	oba.oba_irq = cf->cf_loc[OBIOCF_IRQ];
    139 
    140 	if (config_match(parent, cf, &oba) > 0)
    141 		config_attach(parent, cf, &oba, obio_print);
    142 
    143 	return (0);
    144 }
    145