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mainbus.c revision 1.2 
      1 /*	$NetBSD: mainbus.c,v 1.2 2003/03/07 18:24:01 matt 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 "mainbus.h"
     34 #include "pci.h"
     35 #include "opt_multiprocessor.h"
     36 #include "opt_pci.h"
     37 
     38 #include <sys/param.h>
     39 #include <sys/extent.h>
     40 #include <sys/device.h>
     41 #include <sys/malloc.h>
     42 #include <sys/systm.h>
     43 
     44 #include <machine/bus.h>
     45 
     46 #include <dev/pci/pcivar.h>
     47 #include <dev/pci/pciconf.h>
     48 
     49 #include <dev/marvell/gtvar.h>
     50 
     51 #if NCPU == 0
     52 #error	A cpu device is now required
     53 #endif
     54 
     55 struct	mainbus_attach_args {
     56 	const char *mba_busname;
     57 	int mba_unit;
     58 };
     59 
     60 int	mainbus_cfprint(void *, const char *);
     61 int	mainbus_match(struct device *, struct cfdata *, void *);
     62 void	mainbus_attach(struct device *, struct device *, void *);
     63 
     64 CFATTACH_DECL(mainbus, sizeof(struct device),
     65 	mainbus_match, mainbus_attach, NULL, NULL);
     66 
     67 int
     68 mainbus_cfprint(void *aux, const char *pnp)
     69 {
     70 	struct mainbus_attach_args *mba = aux;
     71 
     72 	if (pnp)
     73 		printf("%s at %s", mba->mba_busname, pnp);
     74 	return (UNCONF);
     75 }
     76 
     77 
     78 /*
     79  * Probe for the mainbus; always succeeds.
     80  */
     81 int
     82 mainbus_match(struct device *parent, struct cfdata *match, void *aux)
     83 {
     84 	return 1;
     85 }
     86 
     87 /*
     88  * Attach the mainbus.
     89  */
     90 void
     91 mainbus_attach(struct device *parent, struct device *self, void *aux)
     92 {
     93 	struct mainbus_attach_args mba;
     94 
     95 	printf("\n");
     96 
     97 	memset(&mba, 0, sizeof(mba));
     98 
     99 	/*
    100 	 * Always find the CPU
    101 	 */
    102 	mba.mba_busname = "cpu";
    103 	mba.mba_unit = 0;
    104 	config_found(self, &mba, mainbus_cfprint);
    105 
    106 #ifdef MULTIPROCESSOR
    107 	/*
    108 	 * Try for a second one...
    109 	 */
    110 	mba.mba_busname = "cpu";
    111 	mba.mba_unit = 1;
    112 	config_found(self, &mba, mainbus_cfprint);
    113 #endif
    114 
    115 	/*
    116 	 * Now try to configure the Discovery
    117 	 */
    118 	mba.mba_busname = "gt";
    119 	mba.mba_unit = 1;
    120 	config_found(self, &mba, mainbus_cfprint);
    121 }
    122 
    123 static int	cpu_match(struct device *, struct cfdata *, void *);
    124 static void	cpu_attach(struct device *, struct device *, void *);
    125 
    126 CFATTACH_DECL(cpu, sizeof(struct device), cpu_match, cpu_attach, NULL, NULL);
    127 
    128 extern struct cfdriver cpu_cd;
    129 
    130 int
    131 cpu_match(struct device *parent, struct cfdata *cf, void *aux)
    132 {
    133 	struct mainbus_attach_args *mba = aux;
    134 
    135 	if (strcmp(mba->mba_busname, cpu_cd.cd_name) != 0)
    136 		return 0;
    137 
    138 	if (cpu_info[0].ci_dev != NULL)
    139 		return 0;
    140 
    141 	return 1;
    142 }
    143 
    144 void
    145 cpu_attach(struct device *parent, struct device *self, void *aux)
    146 {
    147 	(void) cpu_attach_common(self, 0);
    148 }
    149