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 |
82 | struct mp_bus *mp_busses; |
83 | int mp_nbus; |
84 | struct mp_intr_map *mp_intrs; |
85 | int mp_nintr; |
86 | |
87 | int mp_isa_bus = -1; /* XXX */ |
88 | int mp_eisa_bus = -1; /* XXX */ |
89 | |
90 | int acpi_present = 0; |
91 | int mpacpi_active = 0; |
92 | #ifdef MPVERBOSE |
93 | int mp_verbose = 1; |
94 | #else /* MPVERBOSE */ |
95 | int mp_verbose = 0; |
96 | #endif /* MPVERBOSE */ |
97 | #endif /* defined(MPBIOS) || NACPICA > 0 */ |
98 | #endif /* NPCI > 0 */ |
99 | |
100 | |
101 | int mainbus_match(device_t, cfdata_t, void *); |
102 | void mainbus_attach(device_t, device_t, void *); |
103 | |
104 | CFATTACH_DECL_NEW(mainbus, 0, |
105 | mainbus_match, mainbus_attach, NULL, NULL); |
106 | |
107 | int mainbus_print(void *, const char *); |
108 | |
109 | union 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 | */ |
123 | int |
124 | mainbus_match(device_t parent, cfdata_t match, void *aux) |
125 | { |
126 | |
127 | return 1; |
128 | } |
129 | |
130 | /* |
131 | * Attach the mainbus. |
132 | */ |
133 | void |
134 | mainbus_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 | |
217 | int |
218 | mainbus_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 | |