1/* $NetBSD: mainbus.c,v 1.18 2014/03/03 22:09:32 dsl Exp $ */
2/* NetBSD: mainbus.c,v 1.53 2003/10/27 14:11:47 junyoung 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/cdefs.h>
35__KERNEL_RCSID(0, "$NetBSD: mainbus.c,v 1.18 2014/03/03 22:09:32 dsl Exp $");
36
37#include <sys/param.h>
38#include <sys/systm.h>
39#include <sys/device.h>
40
41#include <sys/bus.h>
42
43#include "hypervisor.h"
44#include "pci.h"
45
46#include "opt_xen.h"
47#include "opt_mpbios.h"
48#include "opt_pcifixup.h"
49
50#include "acpica.h"
51#include "ioapic.h"
52
53#include "ipmi.h"
54
55#include <machine/cpuvar.h>
56#include <machine/i82093var.h>
57
58#include <xen/xen.h>
59#include <xen/hypervisor.h>
60
61#if NIPMI > 0
62#include <x86/ipmivar.h>
63#endif
64
65#if NPCI > 0
66#include <dev/pci/pcivar.h>
67#if NACPICA > 0
68#include <dev/acpi/acpivar.h>
69#include <xen/mpacpi.h>
70#endif /* NACPICA > 0 */
71#ifdef MPBIOS
72#include <machine/mpbiosvar.h>
73#endif /* MPBIOS */
74#ifdef PCI_BUS_FIXUP
75#include <arch/x86/pci/pci_bus_fixup.h>
76#ifdef PCI_ADDR_FIXUP
77#include <arch/x86/pci/pci_addr_fixup.h>
78#endif
79#endif
80
81#if defined(MPBIOS) || NACPICA > 0
82struct mp_bus *mp_busses;
83int mp_nbus;
84struct mp_intr_map *mp_intrs;
85int mp_nintr;
86
87int mp_isa_bus = -1; /* XXX */
88int mp_eisa_bus = -1; /* XXX */
89
90int acpi_present = 0;
91int mpacpi_active = 0;
92#ifdef MPVERBOSE
93int mp_verbose = 1;
94#else /* MPVERBOSE */
95int mp_verbose = 0;
96#endif /* MPVERBOSE */
97#endif /* defined(MPBIOS) || NACPICA > 0 */
98#endif /* NPCI > 0 */
99
100
101int mainbus_match(device_t, cfdata_t, void *);
102void mainbus_attach(device_t, device_t, void *);
103
104CFATTACH_DECL_NEW(mainbus, 0,
105 mainbus_match, mainbus_attach, NULL, NULL);
106
107int mainbus_print(void *, const char *);
108
109union mainbus_attach_args {
110 const char *mba_busname; /* first elem of all */
111 struct cpu_attach_args mba_caa;
112#if NHYPERVISOR > 0
113 struct hypervisor_attach_args mba_haa;
114#endif
115#if NIPMI > 0
116 struct ipmi_attach_args mba_ipmi;
117#endif
118};
119
120/*
121 * Probe for the mainbus; always succeeds.
122 */
123int
124mainbus_match(device_t parent, cfdata_t match, void *aux)
125{
126
127 return 1;
128}
129
130/*
131 * Attach the mainbus.
132 */
133void
134mainbus_attach(device_t parent, device_t self, void *aux)
135{
136 union mainbus_attach_args mba;
137#if defined(DOM0OPS)
138 int numcpus = 0;
139#ifdef MPBIOS
140 int mpbios_present = 0;
141#endif
142#ifdef PCI_BUS_FIXUP
143 int pci_maxbus = 0;
144#endif
145#endif /* defined(DOM0OPS) */
146
147 aprint_naive("\n");
148 aprint_normal("\n");
149
150#ifdef DOM0OPS
151 if (xendomain_is_dom0()) {
152#ifdef MPBIOS
153 mpbios_present = mpbios_probe(self);
154#endif
155#if NPCI > 0
156 /* ACPI needs to be able to access PCI configuration space. */
157 pci_mode_detect();
158#ifdef PCI_BUS_FIXUP
159 if (pci_mode != 0) {
160 pci_maxbus = pci_bus_fixup(NULL, 0);
161 aprint_debug_dev(self, "PCI bus max, after "
162 "pci_bus_fixup: %i\n", pci_maxbus);
163#ifdef PCI_ADDR_FIXUP
164 pciaddr.extent_port = NULL;
165 pciaddr.extent_mem = NULL;
166 pci_addr_fixup(NULL, pci_maxbus);
167#endif /* PCI_ADDR_FIXUP */
168 }
169#endif /* PCI_BUS_FIXUP */
170#if NACPICA > 0
171 acpi_present = acpi_probe();
172 if (acpi_present)
173 mpacpi_active = mpacpi_scan_apics(self, &numcpus);
174 if (!mpacpi_active)
175#endif
176 {
177#ifdef MPBIOS
178 if (mpbios_present)
179 mpbios_scan(self, &numcpus);
180 else
181#endif
182 if (numcpus == 0) {
183 memset(&mba.mba_caa, 0, sizeof(mba.mba_caa));
184 mba.mba_caa.cpu_number = 0;
185 mba.mba_caa.cpu_role = CPU_ROLE_SP;
186 mba.mba_caa.cpu_func = 0;
187 config_found_ia(self, "cpubus",
188 &mba.mba_caa, mainbus_print);
189 }
190 }
191#if NIOAPIC > 0
192 ioapic_enable();
193#endif
194#endif /* NPCI */
195 }
196#endif /* DOM0OPS */
197
198#if NIPMI > 0
199 memset(&mba.mba_ipmi, 0, sizeof(mba.mba_ipmi));
200 mba.mba_ipmi.iaa_iot = x86_bus_space_io;
201 mba.mba_ipmi.iaa_memt = x86_bus_space_mem;
202 if (ipmi_probe(&mba.mba_ipmi))
203 config_found_ia(self, "ipmibus", &mba.mba_ipmi, 0);
204#endif
205
206#if NHYPERVISOR > 0
207 mba.mba_haa.haa_busname = "hypervisor";
208 config_found_ia(self, "hypervisorbus", &mba.mba_haa, mainbus_print);
209#endif
210
211 /* save/restore for Xen */
212 if (!pmf_device_register(self, NULL, NULL))
213 aprint_error_dev(self, "couldn't establish power handler\n");
214
215}
216
217int
218mainbus_print(void *aux, const char *pnp)
219{
220 union mainbus_attach_args *mba = aux;
221
222 if (pnp)
223 aprint_normal("%s at %s", mba->mba_busname, pnp);
224 return (UNCONF);
225}
226