sys/arch/evbarm/hdl_g/obio.c

   1 /*      $NetBSD$        */
   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 #include <sys/cdefs.h>
  39 __KERNEL_RCSID(0, "$NetBSD$");
  40
  41 #include <sys/param.h>
  42 #include <sys/systm.h>
  43 #include <sys/device.h>
  44
  45 #include <machine/autoconf.h>
  46 #include <machine/bus.h>
  47
  48 #include <arm/xscale/i80321reg.h>
  49
  50 #include <evbarm/hdl_g/hdlgreg.h>
  51 #include <evbarm/hdl_g/obiovar.h>
  52
  53 #include "locators.h"
  54
  55 int     obio_match(struct device *, struct cfdata *, void *);
  56 void    obio_attach(struct device *, struct device *, void *);
  57
  58 CFATTACH_DECL(obio, sizeof(struct device),
  59     obio_match, obio_attach, NULL, NULL);
  60
  61 int     obio_print(void *, const char *);
  62 int     obio_search(struct device *, struct cfdata *,
  63                     const int *, void *);
  64
  65 /* there can be only one */
  66 int     obio_found;
  67
  68 int
  69 obio_match(struct device *parent, struct cfdata *cf, void *aux)
  70 {
  71
  72         if (obio_found)
  73                 return 0;
  74         return 1;
  75 }
  76
  77 void
  78 obio_attach(struct device *parent, struct device *self, void *aux)
  79 {
  80
  81         obio_found = 1;
  82
  83         aprint_naive("\n");
  84         aprint_normal("\n");
  85
  86         /*
  87          * Attach all on-board devices as described in the kernel
  88          * configuration file.
  89          */
  90         config_search_ia(obio_search, self, "obio", NULL);
  91 }
  92
  93 int
  94 obio_print(void *aux, const char *pnp)
  95 {
  96         struct obio_attach_args *oba = aux;
  97
  98         aprint_normal(" addr 0x%08lx", oba->oba_addr);
  99         if (oba->oba_size != OBIOCF_SIZE_DEFAULT)
 100                 aprint_normal("-0x%08lx", oba->oba_addr + (oba->oba_size - 1));
 101         if (oba->oba_width != OBIOCF_WIDTH_DEFAULT)
 102                 aprint_normal(" width %d", oba->oba_width);
 103         if (oba->oba_irq != -1)
 104                 aprint_normal(" xint %d", oba->oba_irq - ICU_INT_XINT0);
 105
 106         return UNCONF;
 107 }
 108
 109 int
 110 obio_search(struct device *parent, struct cfdata *cf,
 111             const int *ldesc, void *aux)
 112 {
 113         struct obio_attach_args oba;
 114
 115         oba.oba_st = &obio_bs_tag;
 116
 117         oba.oba_addr = cf->cf_loc[OBIOCF_ADDR];
 118         oba.oba_size = cf->cf_loc[OBIOCF_SIZE];
 119         oba.oba_width = cf->cf_loc[OBIOCF_WIDTH];
 120
 121         if (cf->cf_loc[OBIOCF_XINT] != OBIOCF_XINT_DEFAULT)
 122                 oba.oba_irq = ICU_INT_XINT(cf->cf_loc[OBIOCF_XINT]);
 123         else
 124                 oba.oba_irq = -1;
 125
 126         if (config_match(parent, cf, &oba) > 0)
 127                 config_attach(parent, cf, &oba, obio_print);
 128
 129         return 0;
 130 }