sys/arch/evbppc/ev64260/mainbus.c

   1 /*      $NetBSD: mainbus.c,v 1.3.2.3 2004/09/21 13:15:01 skrll Exp $    */
   2
   3 /*
   4  * Copyright (c) 1996 Christopher G. Demetriou.  All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  * 3. All advertising materials mentioning features or use of this software
  15  *    must display the following acknowledgement:
  16  *      This product includes software developed by Christopher G. Demetriou
  17  *      for the NetBSD Project.
  18  * 4. The name of the author may not be used to endorse or promote products
  19  *    derived from this software without specific prior written permission
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  22  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  23  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  24  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  25  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  26  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  27  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  28  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  29  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  30  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  31  */
  32
  33 #include <sys/cdefs.h>
  34 __KERNEL_RCSID(0, "$NetBSD: mainbus.c,v 1.3.2.3 2004/09/21 13:15:01 skrll Exp $");
  35
  36 #include "mainbus.h"
  37 #include "pci.h"
  38 #include "opt_multiprocessor.h"
  39 #include "opt_pci.h"
  40
  41 #include <sys/param.h>
  42 #include <sys/extent.h>
  43 #include <sys/device.h>
  44 #include <sys/malloc.h>
  45 #include <sys/systm.h>
  46
  47 #include <machine/bus.h>
  48
  49 #include <dev/pci/pcivar.h>
  50 #include <dev/pci/pciconf.h>
  51
  52 #include <dev/marvell/gtvar.h>
  53
  54 #if NCPU == 0
  55 #error  A cpu device is now required
  56 #endif
  57
  58 struct  mainbus_attach_args {
  59         const char *mba_busname;
  60         int mba_unit;
  61 };
  62
  63 int     mainbus_cfprint(void *, const char *);
  64 int     mainbus_match(struct device *, struct cfdata *, void *);
  65 void    mainbus_attach(struct device *, struct device *, void *);
  66
  67 CFATTACH_DECL(mainbus, sizeof(struct device),
  68         mainbus_match, mainbus_attach, NULL, NULL);
  69
  70 int
  71 mainbus_cfprint(void *aux, const char *pnp)
  72 {
  73         struct mainbus_attach_args *mba = aux;
  74
  75         if (pnp)
  76                 aprint_normal("%s at %s", mba->mba_busname, pnp);
  77         aprint_normal(" unit %d", mba->mba_unit);
  78         return (UNCONF);
  79 }
  80
  81
  82 /*
  83  * Probe for the mainbus; always succeeds.
  84  */
  85 int
  86 mainbus_match(struct device *parent, struct cfdata *match, void *aux)
  87 {
  88         return 1;
  89 }
  90
  91 /*
  92  * Attach the mainbus.
  93  */
  94 void
  95 mainbus_attach(struct device *parent, struct device *self, void *aux)
  96 {
  97         struct mainbus_attach_args mba;
  98
  99         printf("\n");
 100
 101         memset(&mba, 0, sizeof(mba));
 102
 103         /*
 104          * Always find the CPU
 105          */
 106         mba.mba_busname = "cpu";
 107         mba.mba_unit = 0;
 108         config_found(self, &mba, mainbus_cfprint);
 109
 110 #ifdef MULTIPROCESSOR
 111         /*
 112          * Try for a second one...
 113          */
 114         mba.mba_busname = "cpu";
 115         mba.mba_unit = 1;
 116         config_found(self, &mba, mainbus_cfprint);
 117 #endif
 118
 119         /*
 120          * Now try to configure the Discovery
 121          */
 122         mba.mba_busname = "gt";
 123         mba.mba_unit = 0;
 124         config_found(self, &mba, mainbus_cfprint);
 125 }
 126
 127 static int      cpu_match(struct device *, struct cfdata *, void *);
 128 static void     cpu_attach(struct device *, struct device *, void *);
 129
 130 CFATTACH_DECL(cpu, sizeof(struct device), cpu_match, cpu_attach, NULL, NULL);
 131
 132 extern struct cfdriver cpu_cd;
 133
 134 int
 135 cpu_match(struct device *parent, struct cfdata *cf, void *aux)
 136 {
 137         struct mainbus_attach_args *mba = aux;
 138
 139         if (strcmp(mba->mba_busname, cpu_cd.cd_name) != 0)
 140                 return 0;
 141
 142         if (cpu_info[0].ci_dev != NULL)
 143                 return 0;
 144
 145         return 1;
 146 }
 147
 148 void
 149 cpu_attach(struct device *parent, struct device *self, void *aux)
 150 {
 151         (void) cpu_attach_common(self, 0);
 152 }