acpi: Factor out SDT functions to locate specified SDT
[dragonfly.git] / sys / platform / pc32 / acpica5 / acpi_madt.c
CommitLineData
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1/*
2 * Copyright (c) 2009 The DragonFly Project. All rights reserved.
3 *
4 * This code is derived from software contributed to The DragonFly Project
5 * by Sepherosa Ziehau <sepherosa@gmail.com>
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 *
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in
15 * the documentation and/or other materials provided with the
16 * distribution.
17 * 3. Neither the name of The DragonFly Project nor the names of its
18 * contributors may be used to endorse or promote products derived
19 * from this software without specific, prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
24 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
25 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
26 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
27 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
28 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
29 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
30 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
31 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 */
34
35#include <sys/param.h>
ae80be10 36#include <sys/bus.h>
281d9482 37#include <sys/kernel.h>
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38#include <sys/systm.h>
39
40#include <machine/pmap.h>
41#include <machine/smp.h>
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42#include <machine/md_var.h>
43#include <machine/specialreg.h>
281d9482 44#include <machine_base/apic/mpapic.h>
85fd9f87 45
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46#include "acpi_sdt.h"
47#include "acpi_sdt_var.h"
48
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49#define MADT_VPRINTF(fmt, arg...) \
50do { \
51 if (bootverbose) \
52 kprintf("ACPI MADT: " fmt , ##arg); \
53} while (0)
54
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55/* Multiple APIC Description Table */
56struct acpi_madt {
57 struct acpi_sdth madt_hdr;
58 uint32_t madt_lapic_addr;
59 uint32_t madt_flags;
60 uint8_t madt_ents[1];
61} __packed;
62
63/* Common parts of MADT APIC structure */
64struct acpi_madt_ent {
65 uint8_t me_type; /* MADT_ENT_ */
66 uint8_t me_len;
67} __packed;
68
69#define MADT_ENT_LAPIC 0
030832e4 70#define MADT_ENT_IOAPIC 1
65b2387f 71#define MADT_ENT_INTSRC 2
e25b100a 72#define MADT_ENT_LAPIC_ADDR 5
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73
74/* MADT Processor Local APIC */
75struct acpi_madt_lapic {
76 struct acpi_madt_ent ml_hdr;
77 uint8_t ml_cpu_id;
78 uint8_t ml_apic_id;
79 uint32_t ml_flags; /* MADT_LAPIC_ */
80} __packed;
81
82#define MADT_LAPIC_ENABLED 0x1
83
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84/* MADT I/O APIC */
85struct acpi_madt_ioapic {
86 struct acpi_madt_ent mio_hdr;
87 uint8_t mio_apic_id;
88 uint8_t mio_reserved;
89 uint32_t mio_addr;
90 uint32_t mio_gsi_base;
91} __packed;
92
2bbbec42 93/* MADT Interrupt Source Override */
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94struct acpi_madt_intsrc {
95 struct acpi_madt_ent mint_hdr;
65b2387f 96 uint8_t mint_bus; /* MADT_INT_BUS_ */
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97 uint8_t mint_src;
98 uint32_t mint_gsi;
99 uint16_t mint_flags; /* MADT_INT_ */
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100} __packed;
101
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102#define MADT_INT_BUS_ISA 0
103
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104#define MADT_INT_POLA_MASK 0x3
105#define MADT_INT_POLA_SHIFT 0
106#define MADT_INT_POLA_CONFORM 0
107#define MADT_INT_POLA_HIGH 1
108#define MADT_INT_POLA_RSVD 2
109#define MADT_INT_POLA_LOW 3
110#define MADT_INT_TRIG_MASK 0xc
111#define MADT_INT_TRIG_SHIFT 2
112#define MADT_INT_TRIG_CONFORM 0
113#define MADT_INT_TRIG_EDGE 1
114#define MADT_INT_TRIG_RSVD 2
115#define MADT_INT_TRIG_LEVEL 3
2bbbec42 116
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117/* MADT Local APIC Address Override */
118struct acpi_madt_lapic_addr {
119 struct acpi_madt_ent mla_hdr;
120 uint16_t mla_reserved;
121 uint64_t mla_lapic_addr;
122} __packed;
123
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124typedef int (*madt_iter_t)(void *,
125 const struct acpi_madt_ent *);
85fd9f87 126
223bf214 127static int madt_check(vm_paddr_t);
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128static int madt_iterate_entries(struct acpi_madt *,
129 madt_iter_t, void *);
85fd9f87 130
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131static vm_offset_t madt_lapic_pass1(void);
132static int madt_lapic_pass2(int);
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133
134static void madt_lapic_enumerate(struct lapic_enumerator *);
135static int madt_lapic_probe(struct lapic_enumerator *);
136
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137static void madt_ioapic_enumerate(
138 struct ioapic_enumerator *);
139static int madt_ioapic_probe(struct ioapic_enumerator *);
140
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141static vm_paddr_t madt_phyaddr;
142
143static void
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144madt_probe(void)
145{
d6c62a5d 146 vm_paddr_t madt_paddr;
85fd9f87 147
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148 KKASSERT(madt_phyaddr == 0);
149
d6c62a5d 150 madt_paddr = sdt_search(ACPI_MADT_SIG);
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151 if (madt_paddr == 0) {
152 kprintf("madt_probe: can't locate MADT\n");
86120698 153 return;
85fd9f87 154 }
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155
156 /* Preliminary checks */
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157 if (madt_check(madt_paddr)) {
158 kprintf("madt_probe: madt_check failed\n");
159 return;
160 }
161
162 madt_phyaddr = madt_paddr;
85fd9f87 163}
d6c62a5d 164SYSINIT(madt_probe, SI_BOOT2_PRESMP, SI_ORDER_SECOND, madt_probe, 0);
85fd9f87 165
e25b100a 166static int
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167madt_check(vm_paddr_t madt_paddr)
168{
169 struct acpi_madt *madt;
170 int error = 0;
171
172 KKASSERT(madt_paddr != 0);
173
d6c62a5d 174 madt = sdt_sdth_map(madt_paddr);
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175 KKASSERT(madt != NULL);
176
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177 /*
178 * MADT in ACPI specification 1.0 - 4.0
179 */
180 if (madt->madt_hdr.sdth_rev < 1 || madt->madt_hdr.sdth_rev > 3) {
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181 kprintf("madt_check: unsupported MADT revision %d\n",
182 madt->madt_hdr.sdth_rev);
183 error = EOPNOTSUPP;
184 goto back;
185 }
186
187 if (madt->madt_hdr.sdth_len <
188 sizeof(*madt) - sizeof(madt->madt_ents)) {
189 kprintf("madt_check: invalid MADT length %u\n",
190 madt->madt_hdr.sdth_len);
191 error = EINVAL;
192 goto back;
193 }
194back:
d6c62a5d 195 sdt_sdth_unmap(&madt->madt_hdr);
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196 return error;
197}
198
199static int
200madt_iterate_entries(struct acpi_madt *madt, madt_iter_t func, void *arg)
201{
202 int size, cur, error;
203
204 size = madt->madt_hdr.sdth_len -
205 (sizeof(*madt) - sizeof(madt->madt_ents));
206 cur = 0;
207 error = 0;
208
209 while (size - cur > sizeof(struct acpi_madt_ent)) {
210 const struct acpi_madt_ent *ent;
211
212 ent = (const struct acpi_madt_ent *)&madt->madt_ents[cur];
213 if (ent->me_len < sizeof(*ent)) {
214 kprintf("madt_iterate_entries: invalid MADT "
215 "entry len %d\n", ent->me_len);
216 error = EINVAL;
217 break;
218 }
219 if (ent->me_len > (size - cur)) {
220 kprintf("madt_iterate_entries: invalid MADT "
221 "entry len %d, > table length\n", ent->me_len);
222 error = EINVAL;
223 break;
224 }
225
226 cur += ent->me_len;
227
228 /*
229 * Only Local APIC, I/O APIC and Interrupt Source Override
230 * are defined in ACPI specification 1.0 - 4.0
231 */
232 switch (ent->me_type) {
233 case MADT_ENT_LAPIC:
234 if (ent->me_len < sizeof(struct acpi_madt_lapic)) {
235 kprintf("madt_iterate_entries: invalid MADT "
236 "lapic entry len %d\n", ent->me_len);
237 error = EINVAL;
238 }
239 break;
240
241 case MADT_ENT_IOAPIC:
242 if (ent->me_len < sizeof(struct acpi_madt_ioapic)) {
243 kprintf("madt_iterate_entries: invalid MADT "
244 "ioapic entry len %d\n", ent->me_len);
245 error = EINVAL;
246 }
247 break;
248
65b2387f 249 case MADT_ENT_INTSRC:
922e4bcb 250 if (ent->me_len < sizeof(struct acpi_madt_intsrc)) {
27b59776 251 kprintf("madt_iterate_entries: invalid MADT "
922e4bcb 252 "intsrc entry len %d\n",
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253 ent->me_len);
254 error = EINVAL;
255 }
256 break;
257 }
258 if (error)
259 break;
260
261 error = func(arg, ent);
262 if (error)
263 break;
264 }
265 return error;
266}
267
268static int
269madt_lapic_pass1_callback(void *xarg, const struct acpi_madt_ent *ent)
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270{
271 const struct acpi_madt_lapic_addr *lapic_addr_ent;
272 uint64_t *addr64 = xarg;
273
274 if (ent->me_type != MADT_ENT_LAPIC_ADDR)
275 return 0;
276 if (ent->me_len < sizeof(*lapic_addr_ent)) {
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277 kprintf("madt_lapic_pass1: "
278 "invalid LAPIC address override length\n");
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279 return 0;
280 }
281 lapic_addr_ent = (const struct acpi_madt_lapic_addr *)ent;
282
283 *addr64 = lapic_addr_ent->mla_lapic_addr;
284 return 0;
285}
286
281d9482 287static vm_offset_t
27b59776 288madt_lapic_pass1(void)
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289{
290 struct acpi_madt *madt;
223bf214 291 vm_offset_t lapic_addr;
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292 uint64_t lapic_addr64;
293 int error;
85fd9f87 294
86120698 295 KKASSERT(madt_phyaddr != 0);
85fd9f87 296
d6c62a5d 297 madt = sdt_sdth_map(madt_phyaddr);
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298 KKASSERT(madt != NULL);
299
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300 MADT_VPRINTF("LAPIC address 0x%08x, flags %#x\n",
301 madt->madt_lapic_addr, madt->madt_flags);
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302 lapic_addr = madt->madt_lapic_addr;
303
e25b100a 304 lapic_addr64 = 0;
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305 error = madt_iterate_entries(madt, madt_lapic_pass1_callback,
306 &lapic_addr64);
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307 if (error)
308 panic("madt_iterate_entries(pass1) failed\n");
309
310 if (lapic_addr64 != 0) {
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311 kprintf("ACPI MADT: warning 64bits lapic address 0x%llx\n",
312 lapic_addr64);
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313 /* XXX vm_offset_t is 32bits on i386 */
314 lapic_addr = lapic_addr64;
315 }
316
d6c62a5d 317 sdt_sdth_unmap(&madt->madt_hdr);
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318
319 return lapic_addr;
320}
321
27b59776 322struct madt_lapic_pass2_cbarg {
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323 int cpu;
324 int bsp_found;
325 int bsp_apic_id;
326};
327
328static int
27b59776 329madt_lapic_pass2_callback(void *xarg, const struct acpi_madt_ent *ent)
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330{
331 const struct acpi_madt_lapic *lapic_ent;
27b59776 332 struct madt_lapic_pass2_cbarg *arg = xarg;
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333
334 if (ent->me_type != MADT_ENT_LAPIC)
335 return 0;
336
337 lapic_ent = (const struct acpi_madt_lapic *)ent;
338 if (lapic_ent->ml_flags & MADT_LAPIC_ENABLED) {
65b2387f 339 MADT_VPRINTF("cpu id %d, apic id %d\n",
e907d51d 340 lapic_ent->ml_cpu_id, lapic_ent->ml_apic_id);
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341 if (lapic_ent->ml_apic_id == arg->bsp_apic_id) {
342 mp_set_cpuids(0, lapic_ent->ml_apic_id);
343 arg->bsp_found = 1;
344 } else {
345 mp_set_cpuids(arg->cpu, lapic_ent->ml_apic_id);
346 arg->cpu++;
347 }
348 }
349 return 0;
350}
351
281d9482 352static int
27b59776 353madt_lapic_pass2(int bsp_apic_id)
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354{
355 struct acpi_madt *madt;
27b59776 356 struct madt_lapic_pass2_cbarg arg;
a11898be 357 int error;
223bf214 358
e907d51d 359 MADT_VPRINTF("BSP apic id %d\n", bsp_apic_id);
223bf214 360
86120698 361 KKASSERT(madt_phyaddr != 0);
223bf214 362
d6c62a5d 363 madt = sdt_sdth_map(madt_phyaddr);
223bf214 364 KKASSERT(madt != NULL);
85fd9f87 365
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366 bzero(&arg, sizeof(arg));
367 arg.cpu = 1;
368 arg.bsp_apic_id = bsp_apic_id;
85fd9f87 369
27b59776 370 error = madt_iterate_entries(madt, madt_lapic_pass2_callback, &arg);
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371 if (error)
372 panic("madt_iterate_entries(pass2) failed\n");
85fd9f87 373
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374 KKASSERT(arg.bsp_found);
375 KKASSERT(arg.cpu > 1);
376 mp_naps = arg.cpu - 1; /* exclude BSP */
223bf214 377
d6c62a5d 378 sdt_sdth_unmap(&madt->madt_hdr);
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379
380 return 0;
223bf214
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381}
382
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383struct madt_lapic_probe_cbarg {
384 int cpu_count;
385 vm_offset_t lapic_addr;
386};
387
388static int
389madt_lapic_probe_callback(void *xarg, const struct acpi_madt_ent *ent)
390{
391 struct madt_lapic_probe_cbarg *arg = xarg;
392
393 if (ent->me_type == MADT_ENT_LAPIC) {
394 const struct acpi_madt_lapic *lapic_ent;
395
396 lapic_ent = (const struct acpi_madt_lapic *)ent;
397 if (lapic_ent->ml_flags & MADT_LAPIC_ENABLED)
398 arg->cpu_count++;
399 } else if (ent->me_type == MADT_ENT_LAPIC_ADDR) {
400 const struct acpi_madt_lapic_addr *lapic_addr_ent;
401
402 if (ent->me_len < sizeof(*lapic_addr_ent)) {
403 kprintf("madt_lapic_probe: "
404 "invalid LAPIC address override length\n");
405 return 0;
406 }
407 lapic_addr_ent = (const struct acpi_madt_lapic_addr *)ent;
408
409 if (lapic_addr_ent->mla_lapic_addr != 0)
410 arg->lapic_addr = lapic_addr_ent->mla_lapic_addr;
411 }
412 return 0;
413}
414
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415static int
416madt_lapic_probe(struct lapic_enumerator *e)
417{
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418 struct madt_lapic_probe_cbarg arg;
419 struct acpi_madt *madt;
420 int error;
281d9482 421
86120698 422 if (madt_phyaddr == 0)
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423 return ENXIO;
424
d6c62a5d 425 madt = sdt_sdth_map(madt_phyaddr);
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426 KKASSERT(madt != NULL);
427
428 bzero(&arg, sizeof(arg));
429 arg.lapic_addr = madt->madt_lapic_addr;
430
431 error = madt_iterate_entries(madt, madt_lapic_probe_callback, &arg);
432 if (!error) {
433 if (arg.cpu_count <= 1) {
434 kprintf("madt_lapic_probe: "
435 "less than 2 CPUs is found\n");
436 error = EOPNOTSUPP;
437 }
438 if (arg.lapic_addr == 0) {
439 kprintf("madt_lapic_probe: zero LAPIC address\n");
440 error = EOPNOTSUPP;
441 }
442 }
443
d6c62a5d 444 sdt_sdth_unmap(&madt->madt_hdr);
86120698 445 return error;
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446}
447
448static void
449madt_lapic_enumerate(struct lapic_enumerator *e)
450{
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451 vm_offset_t lapic_addr;
452 int bsp_apic_id;
453
86120698 454 KKASSERT(madt_phyaddr != 0);
281d9482 455
27b59776 456 lapic_addr = madt_lapic_pass1();
281d9482 457 if (lapic_addr == 0)
86120698 458 panic("madt_lapic_enumerate: no local apic\n");
281d9482 459
84cc808b 460 lapic_map(lapic_addr);
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461
462 bsp_apic_id = APIC_ID(lapic.id);
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463 if (madt_lapic_pass2(bsp_apic_id))
464 panic("madt_lapic_enumerate: madt_lapic_pass2 failed\n");
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465}
466
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467static struct lapic_enumerator madt_lapic_enumerator = {
468 .lapic_prio = LAPIC_ENUM_PRIO_MADT,
469 .lapic_probe = madt_lapic_probe,
470 .lapic_enumerate = madt_lapic_enumerate
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471};
472
473static void
27b59776 474madt_lapic_enum_register(void)
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475{
476 int prio;
477
478 prio = LAPIC_ENUM_PRIO_MADT;
479 kgetenv_int("hw.madt_lapic_prio", &prio);
86120698 480 madt_lapic_enumerator.lapic_prio = prio;
281d9482 481
86120698 482 lapic_enumerator_register(&madt_lapic_enumerator);
281d9482 483}
27b59776 484SYSINIT(madt_lapic, SI_BOOT2_PRESMP, SI_ORDER_ANY, madt_lapic_enum_register, 0);
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485
486struct madt_ioapic_probe_cbarg {
487 int ioapic_cnt;
488 int gsi_base0;
489};
490
491static int
492madt_ioapic_probe_callback(void *xarg, const struct acpi_madt_ent *ent)
493{
494 struct madt_ioapic_probe_cbarg *arg = xarg;
495
496 if (ent->me_type == MADT_ENT_INTSRC) {
497 const struct acpi_madt_intsrc *intsrc_ent;
498 int trig, pola;
499
500 intsrc_ent = (const struct acpi_madt_intsrc *)ent;
501
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502 /* XXX magic number */
503 if (intsrc_ent->mint_src >= 16) {
504 kprintf("madt_ioapic_probe: invalid intsrc irq (%d)\n",
505 intsrc_ent->mint_src);
506 return EINVAL;
507 }
508
65b2387f 509 if (intsrc_ent->mint_bus != MADT_INT_BUS_ISA) {
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510 kprintf("ACPI MADT: warning intsrc irq %d "
511 "bus is not ISA (%d)\n",
512 intsrc_ent->mint_src, intsrc_ent->mint_bus);
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513 }
514
515 trig = (intsrc_ent->mint_flags & MADT_INT_TRIG_MASK) >>
516 MADT_INT_TRIG_SHIFT;
ae80be10 517 if (trig == MADT_INT_TRIG_RSVD) {
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518 kprintf("ACPI MADT: warning invalid intsrc irq %d "
519 "trig (%d)\n", intsrc_ent->mint_src, trig);
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520 }
521
522 pola = (intsrc_ent->mint_flags & MADT_INT_POLA_MASK) >>
523 MADT_INT_POLA_SHIFT;
ae80be10 524 if (pola == MADT_INT_POLA_RSVD) {
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525 kprintf("ACPI MADT: warning invalid intsrc irq %d "
526 "pola (%d)\n", intsrc_ent->mint_src, pola);
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527 }
528 } else if (ent->me_type == MADT_ENT_IOAPIC) {
529 const struct acpi_madt_ioapic *ioapic_ent;
530
531 ioapic_ent = (const struct acpi_madt_ioapic *)ent;
532 if (ioapic_ent->mio_addr == 0) {
533 kprintf("madt_ioapic_probe: zero IOAPIC address\n");
534 return EINVAL;
535 }
536
537 arg->ioapic_cnt++;
538 if (ioapic_ent->mio_gsi_base == 0)
539 arg->gsi_base0 = 1;
540 }
541 return 0;
542}
543
544static int
545madt_ioapic_probe(struct ioapic_enumerator *e)
546{
547 struct madt_ioapic_probe_cbarg arg;
548 struct acpi_madt *madt;
549 int error;
550
551 if (madt_phyaddr == 0)
552 return ENXIO;
553
d6c62a5d 554 madt = sdt_sdth_map(madt_phyaddr);
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555 KKASSERT(madt != NULL);
556
557 bzero(&arg, sizeof(arg));
558
559 error = madt_iterate_entries(madt, madt_ioapic_probe_callback, &arg);
560 if (!error) {
561 if (arg.ioapic_cnt == 0) {
562 kprintf("madt_ioapic_probe: no IOAPIC\n");
563 error = ENXIO;
564 }
565 if (!arg.gsi_base0) {
566 kprintf("madt_ioapic_probe: no GSI base 0\n");
567 error = EINVAL;
568 }
569 }
570
d6c62a5d 571 sdt_sdth_unmap(&madt->madt_hdr);
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572 return error;
573}
574
575static int
576madt_ioapic_enum_callback(void *xarg, const struct acpi_madt_ent *ent)
577{
578 if (ent->me_type == MADT_ENT_INTSRC) {
579 const struct acpi_madt_intsrc *intsrc_ent;
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580 enum intr_trigger trig;
581 enum intr_polarity pola;
582 int ent_trig;
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583
584 intsrc_ent = (const struct acpi_madt_intsrc *)ent;
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585
586 KKASSERT(intsrc_ent->mint_src < 16);
587 if (intsrc_ent->mint_bus != MADT_INT_BUS_ISA)
588 return 0;
589
590 ent_trig = (intsrc_ent->mint_flags & MADT_INT_TRIG_MASK) >>
591 MADT_INT_TRIG_SHIFT;
592 if (ent_trig == MADT_INT_TRIG_RSVD) {
1365d5cd 593 return 0;
ca4177e4 594#ifdef notyet
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595 } else if (ent_trig == MADT_INT_TRIG_LEVEL) {
596 trig = INTR_TRIGGER_LEVEL;
597 pola = INTR_POLARITY_LOW;
ca4177e4 598#endif
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599 } else {
600 trig = INTR_TRIGGER_EDGE;
601 pola = INTR_POLARITY_HIGH;
602 }
603
604 if (intsrc_ent->mint_src == intsrc_ent->mint_gsi &&
605 trig == INTR_TRIGGER_EDGE) {
606 /* Nothing changed */
607 return 0;
608 }
1365d5cd 609
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610 MADT_VPRINTF("INTSRC irq %d -> gsi %u %c\n",
611 intsrc_ent->mint_src, intsrc_ent->mint_gsi,
612 trig == INTR_TRIGGER_EDGE ? 'E' : 'L');
613 ioapic_intsrc(intsrc_ent->mint_src, intsrc_ent->mint_gsi,
614 trig, pola);
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615 } else if (ent->me_type == MADT_ENT_IOAPIC) {
616 const struct acpi_madt_ioapic *ioapic_ent;
617
618 ioapic_ent = (const struct acpi_madt_ioapic *)ent;
619 MADT_VPRINTF("IOAPIC addr 0x%08x, apic id %d, gsi base %u\n",
620 ioapic_ent->mio_addr, ioapic_ent->mio_apic_id,
621 ioapic_ent->mio_gsi_base);
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622
623 if (!ioapic_use_old) {
624 uint32_t ver;
625 void *addr;
626 int npin;
627
628 addr = ioapic_map(ioapic_ent->mio_addr);
629
630 ver = ioapic_read(addr, IOAPIC_VER);
631 npin = ((ver & IOART_VER_MAXREDIR) >>
632 MAXREDIRSHIFT) + 1;
633
634 ioapic_add(addr, ioapic_ent->mio_gsi_base, npin);
635 }
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636 }
637 return 0;
638}
639
640static void
641madt_ioapic_enumerate(struct ioapic_enumerator *e)
642{
643 struct acpi_madt *madt;
644 int error;
645
646 KKASSERT(madt_phyaddr != 0);
647
d6c62a5d 648 madt = sdt_sdth_map(madt_phyaddr);
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649 KKASSERT(madt != NULL);
650
651 error = madt_iterate_entries(madt, madt_ioapic_enum_callback, NULL);
652 if (error)
653 panic("madt_ioapic_enumerate failed\n");
654
d6c62a5d 655 sdt_sdth_unmap(&madt->madt_hdr);
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656}
657
658static struct ioapic_enumerator madt_ioapic_enumerator = {
659 .ioapic_prio = IOAPIC_ENUM_PRIO_MADT,
660 .ioapic_probe = madt_ioapic_probe,
661 .ioapic_enumerate = madt_ioapic_enumerate
662};
663
664static void
665madt_ioapic_enum_register(void)
666{
667 int prio;
668
669 prio = IOAPIC_ENUM_PRIO_MADT;
670 kgetenv_int("hw.madt_ioapic_prio", &prio);
671 madt_ioapic_enumerator.ioapic_prio = prio;
672
673 ioapic_enumerator_register(&madt_ioapic_enumerator);
674}
675SYSINIT(madt_ioapic, SI_BOOT2_PRESMP, SI_ORDER_ANY,
676 madt_ioapic_enum_register, 0);