mainbus.c revision 1.10 
1/*	$NetBSD: mainbus.c,v 1.10 2023/12/20 14:12:25 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 1.10 2023/12/20 14:12:25 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
47#include <dev/pci/pcivar.h>
48#if defined(PCI_NETBSD_CONFIGURE)
49#include <dev/pci/pciconf.h>
50#endif
51
52#include <mips/cache.h>
53#include <mips/cpuregs.h>
54
55#include <mips/bonito/bonitoreg.h>
56#include <evbmips/gdium/gdiumvar.h>
57
58#include "locators.h"
59#include "pci.h"
60
61static int	mainbus_match(device_t, cfdata_t, void *);
62static void	mainbus_attach(device_t, device_t, void *);
63static int	mainbus_print(void *, const char *);
64
65CFATTACH_DECL_NEW(mainbus, 0,
66    mainbus_match, mainbus_attach, NULL, NULL);
67
68/* There can be only one. */
69static bool mainbus_found;
70
71const char * const mainbusdevs[] = {
72	"cpu",
73	"bonito",
74#if 0
75	"i2c",
76	"gpio",
77#endif
78};
79
80#define	PCI_IO_START	0x00001000
81#define	PCI_IO_END	0x00003fff
82#define	PCI_IO_SIZE	((PCI_IO_END - PCI_IO_START) + 1)
83
84#define	PCI_MEM_START	0
85#define	PCI_MEM_SIZE	BONITO_PCILO_SIZE
86
87static int
88mainbus_match(device_t parent, cfdata_t match, void *aux)
89{
90	if (mainbus_found)
91		return (0);
92
93	return (1);
94}
95
96static void
97mainbus_attach(device_t parent, device_t self, void *aux)
98{
99	size_t i;
100
101	mainbus_found = true;
102	aprint_normal("\n");
103
104#if defined(PCI_NETBSD_CONFIGURE)
105	struct mips_cache_info * const mci = &mips_cache_info;
106
107	struct pciconf_resources *pcires = pciconf_resource_init();
108	pciconf_resource_add(pcires, PCICONF_RESOURCE_IO,
109	    PCI_IO_START, PCI_IO_SIZE);
110	pciconf_resource_add(pcires, PCICONF_RESOURCE_MEM,
111	    PCI_MEM_START, PCI_MEM_SIZE);
112	pci_configure_bus(&gdium_configuration.gc_pc, pcires,
113	    0, mci->mci_dcache_align);
114	pciconf_resource_fini(pcires);
115#endif /* PCI_NETBSD_CONFIGURE */
116
117	for (i = 0; i < __arraycount(mainbusdevs); i++) {
118		struct mainbus_attach_args maa;
119		maa.maa_name = mainbusdevs[i];
120		(void) config_found(self, &maa, mainbus_print, CFARGS_NONE);
121	}
122}
123
124static int
125mainbus_print(void *aux, const char *pnp)
126{
127	struct mainbus_attach_args *maa = aux;
128
129	if (pnp)
130		aprint_normal("%s at %s", maa->maa_name, pnp);
131
132	return UNCONF;
133}
134