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      1 /*	$NetBSD: obio.c,v 1.13 2021/08/07 16:18:49 thorpej 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 1.13 2021/08/07 16:18:49 thorpej 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 <sys/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(device_t, cfdata_t, void *);
     62 void	obio_attach(device_t, device_t, void *);
     63 
     64 CFATTACH_DECL_NEW(obio, 0,
     65     obio_match, obio_attach, NULL, NULL);
     66 
     67 int	obio_print(void *, const char *);
     68 int	obio_search(device_t, cfdata_t, const int *, void *);
     69 
     70 /* there can be only one */
     71 bool	obio_found;
     72 
     73 int
     74 obio_match(device_t parent, cfdata_t cf, void *aux)
     75 {
     76 #if 0
     77 	struct mainbus_attach_args *ma = aux;
     78 #endif
     79 
     80 	if (obio_found)
     81 		return (0);
     82 
     83 #if 1
     84 	/* XXX Shoot arch/arm/mainbus in the head. */
     85 	return (1);
     86 #else
     87 	if (strcmp(cf->cf_name, ma->ma_name) == 0)
     88 		return (1);
     89 
     90 	return (0);
     91 #endif
     92 }
     93 
     94 void
     95 obio_attach(device_t parent, device_t self, void *aux)
     96 {
     97 
     98 	obio_found = true;
     99 
    100 	aprint_naive("\n");
    101 	aprint_normal("\n");
    102 
    103 	/*
    104 	 * Attach all on-board devices as described in the kernel
    105 	 * configuration file.
    106 	 */
    107 	config_search(self, NULL,
    108 	    CFARGS(.search = obio_search));
    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(device_t parent, cfdata_t cf, const int *ldesc, void *aux)
    129 {
    130 	struct obio_attach_args oba;
    131 
    132 	oba.oba_st = &obio_bs_tag;
    133 
    134 	oba.oba_addr = cf->cf_loc[OBIOCF_ADDR];
    135 	oba.oba_size = cf->cf_loc[OBIOCF_SIZE];
    136 	oba.oba_width = cf->cf_loc[OBIOCF_WIDTH];
    137 	oba.oba_irq = cf->cf_loc[OBIOCF_IRQ];
    138 
    139 	if (config_probe(parent, cf, &oba))
    140 		config_attach(parent, cf, &oba, obio_print, CFARGS_NONE);
    141 
    142 	return (0);
    143 }
    144