sys/arch/evbarm/adi_brh/obio.c

   1 /*      $NetBSD: obio.c,v 1.5.2.4 2005/11/10 13:55:51 skrll 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 1.5.2.4 2005/11/10 13:55:51 skrll 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 int *, 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 int *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 }