mainbus.c revision 1.5 
1/*	$NetBSD: mainbus.c,v 1.5 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 1.5 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
60#include <evbmips/loongson/autoconf.h>
61#if defined(PCI_NETBSD_CONFIGURE)
62#include <evbmips/loongson/loongson_bus_defs.h>
63#endif
64
65#include "locators.h"
66#include "pci.h"
67
68static int	mainbus_match(device_t, cfdata_t, void *);
69static void	mainbus_attach(device_t, device_t, void *);
70static int	mainbus_print(void *, const char *);
71
72CFATTACH_DECL_NEW(mainbus, 0,
73    mainbus_match, mainbus_attach, NULL, NULL);
74
75/* There can be only one. */
76static bool mainbus_found;
77
78const char * const mainbusdevs[] = {
79	"cpu",
80	"bonito",
81#if 0
82	"i2c",
83	"gpio",
84#endif
85};
86
87#define	PCI_IO_START	0x00001000
88#define	PCI_IO_END	0x00003fff
89#define	PCI_IO_SIZE	((PCI_IO_END - PCI_IO_START) + 1)
90
91#define	PCI_MEM_START	0
92#define	PCI_MEM_SIZE	BONITO_PCILO_SIZE
93
94static int
95mainbus_match(device_t parent, cfdata_t match, void *aux)
96{
97	if (mainbus_found)
98		return (0);
99
100	return (1);
101}
102
103static void
104mainbus_attach(device_t parent, device_t self, void *aux)
105{
106	size_t i;
107
108	mainbus_found = true;
109	aprint_normal("\n");
110
111#if defined(PCI_NETBSD_CONFIGURE)
112	struct mips_cache_info * const mci = &mips_cache_info;
113	struct pciconf_resources *pcires = pciconf_resource_init();
114
115	pciconf_resource_add(pcires, PCICONF_RESOURCE_IO,
116	    PCI_IO_START, PCI_IO_SIZE);
117	pciconf_resource_add(pcires, PCICONF_RESOURCE_MEM,
118	    PCI_MEM_START, PCI_MEM_SIZE);
119
120	pci_configure_bus(&bonito_pc, pcires, 0, mci->mci_dcache_align);
121	pciconf_resource_fini(pcires);
122#endif /* PCI_NETBSD_CONFIGURE */
123
124	for (i = 0; i < __arraycount(mainbusdevs); i++) {
125		struct mainbus_attach_args maa;
126		maa.maa_name = mainbusdevs[i];
127		(void) config_found(self, &maa, mainbus_print, CFARG_EOL);
128	}
129}
130
131static int
132mainbus_print(void *aux, const char *pnp)
133{
134	struct mainbus_attach_args *maa = aux;
135
136	if (pnp)
137		aprint_normal("%s at %s", maa->maa_name, pnp);
138
139	return UNCONF;
140}
141