mainbus.c revision 1.13 
1/*	$OpenBSD: mainbus.c,v 1.13 2007/11/16 16:16:07 deraadt Exp $	*/
2/*	$NetBSD: mainbus.c,v 1.1 2003/04/26 18:39:29 fvdl Exp $	*/
3
4/*
5 * Copyright (c) 1996 Christopher G. Demetriou.  All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 * 3. All advertising materials mentioning features or use of this software
16 *    must display the following acknowledgement:
17 *      This product includes software developed by Christopher G. Demetriou
18 *	for the NetBSD Project.
19 * 4. The name of the author may not be used to endorse or promote products
20 *    derived from this software without specific prior written permission
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32 */
33
34#include <sys/param.h>
35#include <sys/systm.h>
36#include <sys/device.h>
37
38#include <machine/bus.h>
39
40#include <dev/isa/isavar.h>
41#include <dev/pci/pcivar.h>
42
43#include <dev/isa/isareg.h>
44
45#include "pci.h"
46#include "isa.h"
47#include "acpi.h"
48#include "ipmi.h"
49#include "bios.h"
50
51#include <machine/cpuvar.h>
52#include <machine/i82093var.h>
53#include <machine/mpbiosvar.h>
54
55#if NACPI > 0
56#include <dev/acpi/acpireg.h>
57#include <dev/acpi/acpivar.h>
58#endif
59
60#if NIPMI > 0
61#include <dev/ipmivar.h>
62#endif
63
64#if NBIOS > 0
65#include <machine/biosvar.h>
66#endif
67
68int	mainbus_match(struct device *, void *, void *);
69void	mainbus_attach(struct device *, struct device *, void *);
70
71struct cfattach mainbus_ca = {
72	sizeof(struct device), mainbus_match, mainbus_attach
73};
74
75struct cfdriver mainbus_cd = {
76	NULL, "mainbus", DV_DULL
77};
78
79int	mainbus_print(void *, const char *);
80
81union mainbus_attach_args {
82	const char *mba_busname;		/* first elem of all */
83	struct pcibus_attach_args mba_pba;
84	struct isabus_attach_args mba_iba;
85	struct cpu_attach_args mba_caa;
86	struct apic_attach_args aaa_caa;
87#if NACPI > 0
88	struct acpi_attach_args mba_aaa;
89#endif
90#if NIPMI > 0
91	struct ipmi_attach_args mba_iaa;
92#endif
93#if NBIOS > 0
94	struct bios_attach_args mba_bios;
95#endif
96};
97
98/*
99 * This is set when the ISA bus is attached.  If it's not set by the
100 * time it's checked below, then mainbus attempts to attach an ISA.
101 */
102int	isa_has_been_seen;
103#if NISA > 0
104struct isabus_attach_args mba_iba = {
105	"isa",
106	X86_BUS_SPACE_IO, X86_BUS_SPACE_MEM,
107#if NISADMA > 0
108	&isa_bus_dma_tag
109#else
110	NULL
111#endif
112};
113#endif
114
115#if defined(MPBIOS) || defined(MPACPI)
116struct mp_bus *mp_busses;
117int mp_nbus;
118struct mp_intr_map *mp_intrs;
119int mp_nintrs;
120
121struct mp_bus *mp_isa_bus;
122struct mp_bus *mp_eisa_bus;
123
124#ifdef MPVERBOSE
125int mp_verbose = 1;
126#else
127int mp_verbose = 0;
128#endif
129#endif
130
131
132/*
133 * Probe for the mainbus; always succeeds.
134 */
135int
136mainbus_match(struct device *parent, void *match, void *aux)
137{
138	return (1);
139}
140
141/*
142 * Attach the mainbus.
143 */
144void
145mainbus_attach(struct device *parent, struct device *self, void *aux)
146{
147#if NPCI > 0
148	union mainbus_attach_args	mba;
149#endif
150#ifdef MPBIOS
151	int				mpbios_present = 0;
152#endif
153	extern void			(*setperf_setup)(struct cpu_info *);
154
155	printf("\n");
156
157#if NPCI > 0
158	pci_mode = pci_mode_detect();
159#endif
160
161#if NBIOS > 0
162	{
163		mba.mba_bios.bios_dev = "bios";
164		mba.mba_bios.bios_iot = X86_BUS_SPACE_IO;
165		mba.mba_bios.bios_memt = X86_BUS_SPACE_MEM;
166		config_found(self, &mba.mba_bios, mainbus_print);
167	}
168#endif
169
170#if NACPI > 0
171#if NPCI > 0
172	if (pci_mode != 0)
173#endif
174	{
175		memset(&mba.mba_aaa, 0, sizeof(mba.mba_aaa));
176		mba.mba_aaa.aaa_name = "acpi";
177		mba.mba_aaa.aaa_iot = X86_BUS_SPACE_IO;
178		mba.mba_aaa.aaa_memt = X86_BUS_SPACE_MEM;
179
180		config_found(self, &mba.mba_aaa, mainbus_print);
181	}
182#endif
183
184#if NIPMI > 0
185	{
186		memset(&mba.mba_iaa, 0, sizeof(mba.mba_iaa));
187		mba.mba_iaa.iaa_name = "ipmi";
188		mba.mba_iaa.iaa_iot  = X86_BUS_SPACE_IO;
189		mba.mba_iaa.iaa_memt = X86_BUS_SPACE_MEM;
190		if (ipmi_probe(&mba.mba_iaa))
191			config_found(self, &mba.mba_iaa, mainbus_print);
192	}
193#endif
194
195#ifdef MPBIOS
196	mpbios_present = mpbios_probe(self);
197#endif
198
199#ifdef MPBIOS
200	if (mpbios_present)
201		mpbios_scan(self);
202	else
203#endif
204
205	if ((cpu_info_primary.ci_flags & CPUF_PRESENT) == 0) {
206		struct cpu_attach_args caa;
207
208		memset(&caa, 0, sizeof(caa));
209		caa.caa_name = "cpu";
210		caa.cpu_number = 0;
211		caa.cpu_role = CPU_ROLE_SP;
212		caa.cpu_func = 0;
213
214		config_found(self, &caa, mainbus_print);
215	}
216
217#if NACPI > 0
218	if (!acpi_hasprocfvs)
219#endif
220	{
221		if (setperf_setup != NULL)
222			setperf_setup(&cpu_info_primary);
223	}
224
225#ifdef MULTIPROCESSOR
226	mp_setperf_init();
227#endif
228
229#if NPCI > 0
230	if (pci_mode != 0) {
231		mba.mba_pba.pba_busname = "pci";
232		mba.mba_pba.pba_iot = X86_BUS_SPACE_IO;
233		mba.mba_pba.pba_memt = X86_BUS_SPACE_MEM;
234		mba.mba_pba.pba_dmat = &pci_bus_dma_tag;
235		mba.mba_pba.pba_domain = pci_ndomains++;
236		mba.mba_pba.pba_bus = 0;
237		mba.mba_pba.pba_bridgetag = NULL;
238		mba.mba_pba.pba_pc = NULL;
239		config_found(self, &mba.mba_pba, mainbus_print);
240	}
241#endif
242
243#if NISA > 0
244	if (isa_has_been_seen == 0)
245		config_found(self, &mba_iba, mainbus_print);
246#endif
247
248}
249
250int
251mainbus_print(void *aux, const char *pnp)
252{
253	union mainbus_attach_args	*mba = aux;
254
255	if (pnp)
256		printf("%s at %s", mba->mba_busname, pnp);
257	if (strcmp(mba->mba_busname, "pci") == 0)
258		printf(" bus %d", mba->mba_pba.pba_bus);
259
260	return (UNCONF);
261}
262