1/* $NetBSD: mainbus.c,v 1.37 2016/06/21 11:33:32 nonaka Exp $ */
2
3/*
4 * Copyright (c) 1996 Christopher G. Demetriou. All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. All advertising materials mentioning features or use of this software
15 * must display the following acknowledgement:
16 * This product includes software developed by Christopher G. Demetriou
17 * for the NetBSD Project.
18 * 4. The name of the author may not be used to endorse or promote products
19 * derived from this software without specific prior written permission
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 */
32
33#include <sys/cdefs.h>
34__KERNEL_RCSID(0, "$NetBSD: mainbus.c,v 1.37 2016/06/21 11:33:32 nonaka Exp $");
35
36#include <sys/param.h>
37#include <sys/systm.h>
38#include <sys/device.h>
39#include <sys/reboot.h>
40#include <sys/bus.h>
41
42#include <dev/isa/isavar.h>
43#include <dev/pci/pcivar.h>
44
45#include <dev/isa/isareg.h>
46
47#include "pci.h"
48#include "isa.h"
49#include "isadma.h"
50#include "acpica.h"
51#include "ipmi.h"
52
53#include "opt_acpi.h"
54#include "opt_mpbios.h"
55#include "opt_pcifixup.h"
56
57#include <machine/cpuvar.h>
58#include <machine/i82093var.h>
59#include <machine/mpbiosvar.h>
60#include <machine/mpacpi.h>
61
62#if NACPICA > 0
63#include <dev/acpi/acpivar.h>
64#endif
65
66#if NIPMI > 0
67#include <x86/ipmivar.h>
68#endif
69
70#if NPCI > 0
71#if defined(PCI_BUS_FIXUP)
72#include <arch/x86/pci/pci_bus_fixup.h>
73#if defined(PCI_ADDR_FIXUP)
74#include <arch/x86/pci/pci_addr_fixup.h>
75#endif
76#endif
77#include <arch/x86/pci/msipic.h>
78#endif
79
80/*
81 * XXXfvdl ACPI
82 */
83
84int mainbus_match(device_t, cfdata_t, void *);
85void mainbus_attach(device_t, device_t, void *);
86
87CFATTACH_DECL_NEW(mainbus, 0,
88 mainbus_match, mainbus_attach, NULL, NULL);
89
90int mainbus_print(void *, const char *);
91
92union mainbus_attach_args {
93 const char *mba_busname; /* first elem of all */
94 struct pcibus_attach_args mba_pba;
95 struct isabus_attach_args mba_iba;
96 struct cpu_attach_args mba_caa;
97#if NACPICA > 0
98 struct acpibus_attach_args mba_acpi;
99#endif
100 struct apic_attach_args aaa_caa;
101#if NIPMI > 0
102 struct ipmi_attach_args mba_ipmi;
103#endif
104};
105
106/*
107 * This is set when the ISA bus is attached. If it's not set by the
108 * time it's checked below, then mainbus attempts to attach an ISA.
109 */
110int isa_has_been_seen;
111struct x86_isa_chipset x86_isa_chipset;
112#if NISA > 0
113static const struct isabus_attach_args mba_iba = {
114 ._iba_busname = "isa",
115 .iba_dmat = &isa_bus_dma_tag,
116 .iba_ic = &x86_isa_chipset
117};
118#endif
119
120#if defined(MPBIOS) || NACPICA > 0
121struct mp_bus *mp_busses;
122int mp_nbus;
123struct mp_intr_map *mp_intrs;
124int mp_nintr;
125
126int mp_isa_bus = -1;
127int mp_eisa_bus = -1;
128
129# ifdef MPVERBOSE
130# if MPVERBOSE > 0
131int mp_verbose = MPVERBOSE;
132# else
133int mp_verbose = 1;
134# endif
135# else
136int mp_verbose = 0;
137# endif
138#endif
139
140
141/*
142 * Probe for the mainbus; always succeeds.
143 */
144int
145mainbus_match(device_t parent, cfdata_t match, void *aux)
146{
147
148 return 1;
149}
150
151/*
152 * Attach the mainbus.
153 */
154void
155mainbus_attach(device_t parent, device_t self, void *aux)
156{
157#if NPCI > 0 || NACPICA > 0 || NIPMI > 0
158 union mainbus_attach_args mba;
159#endif
160#if NPCI > 0
161 int mode;
162#endif
163#if NACPICA > 0
164 int acpi_present = 0;
165#endif
166#ifdef MPBIOS
167 int mpbios_present = 0;
168#endif
169 int mpacpi_active = 0;
170 int numcpus = 0;
171#if defined(PCI_BUS_FIXUP)
172 int pci_maxbus = 0;
173#endif
174
175 aprint_naive("\n");
176 aprint_normal("\n");
177
178#ifdef MPBIOS
179 mpbios_present = mpbios_probe(self);
180#endif
181
182#if NPCI > 0
183 msipic_init();
184
185 /*
186 * ACPI needs to be able to access PCI configuration space.
187 */
188 mode = pci_mode_detect();
189#if defined(PCI_BUS_FIXUP)
190 if (mode != 0) {
191 pci_maxbus = pci_bus_fixup(NULL, 0);
192 aprint_debug("PCI bus max, after pci_bus_fixup: %i\n",
193 pci_maxbus);
194#if defined(PCI_ADDR_FIXUP)
195 pciaddr.extent_port = NULL;
196 pciaddr.extent_mem = NULL;
197 pci_addr_fixup(NULL, pci_maxbus);
198#endif
199 }
200#endif
201#endif
202
203#if NACPICA > 0
204 if ((boothowto & RB_MD2) == 0 && acpi_check(self, "acpibus"))
205 acpi_present = acpi_probe();
206 /*
207 * First, see if the MADT contains CPUs, and possibly I/O APICs.
208 * Building the interrupt routing structures can only
209 * be done later (via a callback).
210 */
211 if (acpi_present)
212 mpacpi_active = mpacpi_scan_apics(self, &numcpus);
213#endif
214
215 if (!mpacpi_active) {
216#ifdef MPBIOS
217 if (mpbios_present)
218 mpbios_scan(self, &numcpus);
219 else
220#endif
221 if (numcpus == 0) {
222 struct cpu_attach_args caa;
223
224 memset(&caa, 0, sizeof(caa));
225 caa.cpu_number = 0;
226 caa.cpu_role = CPU_ROLE_SP;
227 caa.cpu_func = 0;
228
229 config_found_ia(self, "cpubus", &caa, mainbus_print);
230 }
231 }
232
233#if NISADMA > 0 && NACPICA > 0
234 /*
235 * ACPI needs ISA DMA initialized before they start probing.
236 */
237 isa_dmainit(&x86_isa_chipset, x86_bus_space_io, &isa_bus_dma_tag,
238 self);
239#endif
240
241#if NACPICA > 0
242 if (acpi_present) {
243 mba.mba_acpi.aa_iot = x86_bus_space_io;
244 mba.mba_acpi.aa_memt = x86_bus_space_mem;
245 mba.mba_acpi.aa_pc = NULL;
246 mba.mba_acpi.aa_pciflags =
247 PCI_FLAGS_IO_OKAY | PCI_FLAGS_MEM_OKAY |
248 PCI_FLAGS_MRL_OKAY | PCI_FLAGS_MRM_OKAY |
249 PCI_FLAGS_MWI_OKAY;
250 mba.mba_acpi.aa_ic = &x86_isa_chipset;
251 mba.mba_acpi.aa_dmat = &pci_bus_dma_tag;
252 mba.mba_acpi.aa_dmat64 = &pci_bus_dma64_tag;
253 config_found_ia(self, "acpibus", &mba.mba_acpi, 0);
254 }
255#endif
256
257#if NIPMI > 0
258 memset(&mba.mba_ipmi, 0, sizeof(mba.mba_ipmi));
259 mba.mba_ipmi.iaa_iot = x86_bus_space_io;
260 mba.mba_ipmi.iaa_memt = x86_bus_space_mem;
261 if (ipmi_probe(&mba.mba_ipmi))
262 config_found_ia(self, "ipmibus", &mba.mba_ipmi, 0);
263#endif
264
265#if NPCI > 0
266 if (mode != 0) {
267 int npcibus = 0;
268
269 mba.mba_pba.pba_iot = x86_bus_space_io;
270 mba.mba_pba.pba_memt = x86_bus_space_mem;
271 mba.mba_pba.pba_dmat = &pci_bus_dma_tag;
272 mba.mba_pba.pba_dmat64 = &pci_bus_dma64_tag;
273 mba.mba_pba.pba_pc = NULL;
274 mba.mba_pba.pba_flags =
275 PCI_FLAGS_IO_OKAY | PCI_FLAGS_MEM_OKAY |
276 PCI_FLAGS_MRL_OKAY | PCI_FLAGS_MRM_OKAY |
277 PCI_FLAGS_MWI_OKAY;
278 mba.mba_pba.pba_bus = 0;
279 mba.mba_pba.pba_bridgetag = NULL;
280#if NACPICA > 0 && defined(ACPI_SCANPCI)
281 if (npcibus == 0 && mpacpi_active)
282 npcibus = mp_pci_scan(self, &mba.mba_pba, pcibusprint);
283#endif
284#if defined(MPBIOS) && defined(MPBIOS_SCANPCI)
285 if (npcibus == 0 && mpbios_scanned != 0)
286 npcibus = mp_pci_scan(self, &mba.mba_pba, pcibusprint);
287#endif
288 if (npcibus == 0)
289 config_found_ia(self, "pcibus", &mba.mba_pba,
290 pcibusprint);
291
292#if NACPICA > 0
293 if (mp_verbose)
294 acpi_pci_link_state();
295#endif
296
297 }
298#endif
299
300#if NISA > 0
301 if (isa_has_been_seen == 0) {
302 mba.mba_iba = mba_iba;
303 mba.mba_iba.iba_iot = x86_bus_space_io;
304 mba.mba_iba.iba_memt = x86_bus_space_mem;
305 config_found_ia(self, "isabus", &mba.mba_iba, isabusprint);
306 }
307#endif
308
309 if (!pmf_device_register(self, NULL, NULL))
310 aprint_error_dev(self, "couldn't establish power handler\n");
311}
312
313int
314mainbus_print(void *aux, const char *pnp)
315{
316 union mainbus_attach_args *mba = aux;
317
318 if (pnp)
319 aprint_normal("%s at %s", mba->mba_busname, pnp);
320 return (UNCONF);
321}
322