mainbus.c revision 1.28 
1/*	$OpenBSD: mainbus.c,v 1.28 2015/03/14 03:38:46 jsg 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#include "mpbios.h"
51#include "vmt.h"
52
53#include <machine/cpuvar.h>
54#include <machine/i82093var.h>
55
56#include <dev/acpi/acpivar.h>
57
58#if NIPMI > 0
59#include <dev/ipmivar.h>
60#endif
61
62#if NVMT > 0
63#include <dev/vmtvar.h>
64#endif
65
66#if NBIOS > 0
67#include <machine/biosvar.h>
68#endif
69
70int	mainbus_match(struct device *, void *, void *);
71void	mainbus_attach(struct device *, struct device *, void *);
72
73struct cfattach mainbus_ca = {
74	sizeof(struct device), mainbus_match, mainbus_attach
75};
76
77struct cfdriver mainbus_cd = {
78	NULL, "mainbus", DV_DULL
79};
80
81int	mainbus_print(void *, const char *);
82
83union mainbus_attach_args {
84	const char *mba_busname;		/* first elem of all */
85	struct pcibus_attach_args mba_pba;
86	struct isabus_attach_args mba_iba;
87	struct cpu_attach_args mba_caa;
88	struct apic_attach_args aaa_caa;
89#if NIPMI > 0
90	struct ipmi_attach_args mba_iaa;
91#endif
92#if NBIOS > 0
93	struct bios_attach_args mba_bios;
94#endif
95};
96
97/*
98 * This is set when the ISA bus is attached.  If it's not set by the
99 * time it's checked below, then mainbus attempts to attach an ISA.
100 */
101int	isa_has_been_seen;
102#if NISA > 0
103struct isabus_attach_args mba_iba = {
104	"isa",
105	X86_BUS_SPACE_IO, X86_BUS_SPACE_MEM,
106#if NISADMA > 0
107	&isa_bus_dma_tag
108#else
109	NULL
110#endif
111};
112#endif
113
114#if NMPBIOS > 0 || NACPI > 0
115struct mp_bus *mp_busses;
116int mp_nbusses;
117struct mp_intr_map *mp_intrs;
118int mp_nintrs;
119
120struct mp_bus *mp_isa_bus;
121struct mp_bus *mp_eisa_bus;
122
123#ifdef MPVERBOSE
124int mp_verbose = 1;
125#else
126int mp_verbose = 0;
127#endif
128#endif
129
130
131/*
132 * Probe for the mainbus; always succeeds.
133 */
134int
135mainbus_match(struct device *parent, void *match, void *aux)
136{
137	return (1);
138}
139
140/*
141 * Attach the mainbus.
142 */
143void
144mainbus_attach(struct device *parent, struct device *self, void *aux)
145{
146#if NPCI > 0
147	union mainbus_attach_args	mba;
148#endif
149	extern void			(*setperf_setup)(struct cpu_info *);
150
151	printf("\n");
152
153#if NBIOS > 0
154	{
155		mba.mba_bios.ba_name = "bios";
156		mba.mba_bios.ba_iot = X86_BUS_SPACE_IO;
157		mba.mba_bios.ba_memt = X86_BUS_SPACE_MEM;
158		config_found(self, &mba.mba_bios, mainbus_print);
159	}
160#endif
161
162#if NIPMI > 0
163	{
164		memset(&mba.mba_iaa, 0, sizeof(mba.mba_iaa));
165		mba.mba_iaa.iaa_name = "ipmi";
166		mba.mba_iaa.iaa_iot  = X86_BUS_SPACE_IO;
167		mba.mba_iaa.iaa_memt = X86_BUS_SPACE_MEM;
168		if (ipmi_probe(&mba.mba_iaa))
169			config_found(self, &mba.mba_iaa, mainbus_print);
170	}
171#endif
172
173#if NVMT > 0
174	if (vmt_probe()) {
175		mba.mba_busname = "vmt";
176		config_found(self, &mba.mba_busname, mainbus_print);
177	}
178#endif
179
180	if ((cpu_info_primary.ci_flags & CPUF_PRESENT) == 0) {
181		struct cpu_attach_args caa;
182
183		memset(&caa, 0, sizeof(caa));
184		caa.caa_name = "cpu";
185		caa.cpu_number = 0;
186		caa.cpu_role = CPU_ROLE_SP;
187		caa.cpu_func = 0;
188
189		config_found(self, &caa, mainbus_print);
190	}
191
192#if NACPI > 0
193	if (!acpi_hasprocfvs)
194#endif
195	{
196		if (setperf_setup != NULL)
197			setperf_setup(&cpu_info_primary);
198	}
199
200#ifdef MULTIPROCESSOR
201	mp_setperf_init();
202#endif
203
204#if NPCI > 0
205	{
206		pci_init_extents();
207
208		bzero(&mba.mba_pba, sizeof(mba.mba_pba));
209		mba.mba_pba.pba_busname = "pci";
210		mba.mba_pba.pba_iot = X86_BUS_SPACE_IO;
211		mba.mba_pba.pba_memt = X86_BUS_SPACE_MEM;
212		mba.mba_pba.pba_dmat = &pci_bus_dma_tag;
213		mba.mba_pba.pba_ioex = pciio_ex;
214		mba.mba_pba.pba_memex = pcimem_ex;
215		mba.mba_pba.pba_busex = pcibus_ex;
216		mba.mba_pba.pba_domain = pci_ndomains++;
217		mba.mba_pba.pba_bus = 0;
218		config_found(self, &mba.mba_pba, mainbus_print);
219#if NACPI > 0
220		acpi_pciroots_attach(self, &mba.mba_pba, mainbus_print);
221#endif
222	}
223#endif
224
225#if NISA > 0
226	if (isa_has_been_seen == 0)
227		config_found(self, &mba_iba, mainbus_print);
228#endif
229
230}
231
232int
233mainbus_print(void *aux, const char *pnp)
234{
235	union mainbus_attach_args	*mba = aux;
236
237	if (pnp)
238		printf("%s at %s", mba->mba_busname, pnp);
239	if (strcmp(mba->mba_busname, "pci") == 0)
240		printf(" bus %d", mba->mba_pba.pba_bus);
241
242	return (UNCONF);
243}
244