mainbus.c revision 1.8 
1/*	$NetBSD: mainbus.c,v 1.8 2021/04/24 23:36:35 thorpej Exp $	*/
2
3/*
4 * Copyright 2002 Wasabi Systems, Inc.
5 * All rights reserved.
6 *
7 * Written by Simon Burge 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: mainbus.c,v 1.8 2021/04/24 23:36:35 thorpej Exp $");
40
41#include "opt_pci.h"
42
43#include <sys/param.h>
44#include <sys/systm.h>
45#include <sys/device.h>
46#if defined(PCI_NETBSD_CONFIGURE)
47#include <sys/malloc.h>
48#endif
49
50#include <dev/pci/pcivar.h>
51#if defined(PCI_NETBSD_CONFIGURE)
52#include <dev/pci/pciconf.h>
53#endif
54
55#include <mips/cache.h>
56#include <mips/cpuregs.h>
57
58#include <mips/bonito/bonitoreg.h>
59#include <evbmips/gdium/gdiumvar.h>
60
61#include "locators.h"
62#include "pci.h"
63
64static int	mainbus_match(device_t, cfdata_t, void *);
65static void	mainbus_attach(device_t, device_t, void *);
66static int	mainbus_print(void *, const char *);
67
68CFATTACH_DECL_NEW(mainbus, 0,
69    mainbus_match, mainbus_attach, NULL, NULL);
70
71/* There can be only one. */
72static bool mainbus_found;
73
74const char * const mainbusdevs[] = {
75	"cpu",
76	"bonito",
77#if 0
78	"i2c",
79	"gpio",
80#endif
81};
82
83#define	PCI_IO_START	0x00001000
84#define	PCI_IO_END	0x00003fff
85#define	PCI_IO_SIZE	((PCI_IO_END - PCI_IO_START) + 1)
86
87#define	PCI_MEM_START	0
88#define	PCI_MEM_SIZE	BONITO_PCILO_SIZE
89
90static int
91mainbus_match(device_t parent, cfdata_t match, void *aux)
92{
93	if (mainbus_found)
94		return (0);
95
96	return (1);
97}
98
99static void
100mainbus_attach(device_t parent, device_t self, void *aux)
101{
102	size_t i;
103
104	mainbus_found = true;
105	aprint_normal("\n");
106
107#if defined(PCI_NETBSD_CONFIGURE)
108	struct mips_cache_info * const mci = &mips_cache_info;
109
110	struct pciconf_resources *pcires = pciconf_resource_init();
111	pciconf_resource_add(pcires, PCICONF_RESOURCE_IO,
112	    PCI_IO_START, PCI_IO_SIZE);
113	pciconf_resource_add(pcires, PCICONF_RESOURCE_MEM,
114	    PCI_MEM_START, PCI_MEM_SIZE);
115	pci_configure_bus(&gdium_configuration.gc_pc, pcires,
116	    0, mci->mci_dcache_align);
117	pciconf_resource_fini(pcires);
118#endif /* PCI_NETBSD_CONFIGURE */
119
120	for (i = 0; i < __arraycount(mainbusdevs); i++) {
121		struct mainbus_attach_args maa;
122		maa.maa_name = mainbusdevs[i];
123		(void) config_found(self, &maa, mainbus_print, CFARG_EOL);
124	}
125}
126
127static int
128mainbus_print(void *aux, const char *pnp)
129{
130	struct mainbus_attach_args *maa = aux;
131
132	if (pnp)
133		aprint_normal("%s at %s", maa->maa_name, pnp);
134
135	return UNCONF;
136}
137