madt: Function renaming
[dragonfly.git] / sys / platform / pc64 / x86_64 / mp_madt.c
CommitLineData
8e4c6923
MN
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>
91903a05 36#include <sys/kernel.h>
8e4c6923
MN
37#include <sys/systm.h>
38
39#include <machine/pmap.h>
40#include <machine/smp.h>
ee5932ac
MN
41#include <machine/md_var.h>
42#include <machine/specialreg.h>
91903a05 43#include <machine_base/apic/mpapic.h>
8e4c6923 44
c87b587d
MN
45#define MADT_VPRINTF(fmt, arg...) \
46do { \
47 if (bootverbose) \
48 kprintf("ACPI MADT: " fmt , ##arg); \
49} while (0)
50
8e4c6923
MN
51#define ACPI_RSDP_EBDA_MAPSZ 1024
52#define ACPI_RSDP_BIOS_MAPSZ 0x20000
53#define ACPI_RSDP_BIOS_MAPADDR 0xe0000
54
55#define ACPI_RSDP_ALIGN 16
56
57#define ACPI_RSDP_SIGLEN 8
58#define ACPI_RSDP_SIG "RSD PTR "
59
60#define ACPI_SDTH_SIGLEN 4
61#define ACPI_RSDT_SIG "RSDT"
62#define ACPI_XSDT_SIG "XSDT"
63#define ACPI_MADT_SIG "APIC"
64
65/* Root System Description Pointer */
66struct acpi_rsdp {
67 uint8_t rsdp_sig[ACPI_RSDP_SIGLEN];
68 uint8_t rsdp_cksum;
69 uint8_t rsdp_oem_id[6];
70 uint8_t rsdp_rev;
71 uint32_t rsdp_rsdt;
72 uint32_t rsdp_len;
73 uint64_t rsdp_xsdt;
74 uint8_t rsdp_ext_cksum;
75 uint8_t rsdp_rsvd[3];
76} __packed;
77
78/* System Description Table Header */
79struct acpi_sdth {
80 uint8_t sdth_sig[ACPI_SDTH_SIGLEN];
81 uint32_t sdth_len;
82 uint8_t sdth_rev;
83 uint8_t sdth_cksum;
84 uint8_t sdth_oem_id[6];
85 uint8_t sdth_oem_tbid[8];
86 uint32_t sdth_oem_rev;
87 uint32_t sdth_crt_id;
88 uint32_t sdth_crt_rev;
89} __packed;
90
91/* Extended System Description Table */
92struct acpi_xsdt {
93 struct acpi_sdth xsdt_hdr;
94 uint64_t xsdt_ents[1];
95} __packed;
96
97/* Root System Description Table */
98struct acpi_rsdt {
99 struct acpi_sdth rsdt_hdr;
100 uint32_t rsdt_ents[1];
101} __packed;
102
103/* Multiple APIC Description Table */
104struct acpi_madt {
105 struct acpi_sdth madt_hdr;
106 uint32_t madt_lapic_addr;
107 uint32_t madt_flags;
108 uint8_t madt_ents[1];
109} __packed;
110
111/* Common parts of MADT APIC structure */
112struct acpi_madt_ent {
113 uint8_t me_type; /* MADT_ENT_ */
114 uint8_t me_len;
115} __packed;
116
117#define MADT_ENT_LAPIC 0
0492bd82 118#define MADT_ENT_IOAPIC 1
2bbbec42 119#define MADT_ENT_INTSRC_OVR 2
ebbde674 120#define MADT_ENT_LAPIC_ADDR 5
8e4c6923
MN
121
122/* MADT Processor Local APIC */
123struct acpi_madt_lapic {
124 struct acpi_madt_ent ml_hdr;
125 uint8_t ml_cpu_id;
126 uint8_t ml_apic_id;
127 uint32_t ml_flags; /* MADT_LAPIC_ */
128} __packed;
129
130#define MADT_LAPIC_ENABLED 0x1
131
0492bd82
MN
132/* MADT I/O APIC */
133struct acpi_madt_ioapic {
134 struct acpi_madt_ent mio_hdr;
135 uint8_t mio_apic_id;
136 uint8_t mio_reserved;
137 uint32_t mio_addr;
138 uint32_t mio_gsi_base;
139} __packed;
140
2bbbec42
SZ
141/* MADT Interrupt Source Override */
142struct acpi_madt_intsrc_ovr {
143 struct acpi_madt_ent miso_hdr;
144 uint8_t miso_bus;
145 uint8_t miso_src;
146 uint32_t miso_gsi;
147 uint16_t miso_flags; /* MADT_ISO_ */
148} __packed;
149
150#define MADT_ISO_POLA_MASK 0x3
151#define MADT_ISO_POLA_SHIFT 0
152#define MADT_ISO_POLA_CONFORM 0
153#define MADT_ISO_POLA_HIGH 1
154#define MADT_ISO_POLA_RSVD 2
155#define MADT_ISO_POLA_LOW 3
156#define MADT_ISO_TRIG_MASK 0xc
157#define MADT_ISO_TRIG_SHIFT 2
158#define MADT_ISO_TRIG_CONFORM 0
159#define MADT_ISO_TRIG_EDGE 1
160#define MADT_ISO_TRIG_RSVD 2
161#define MADT_ISO_TRIG_LEVEL 3
162
ebbde674
MN
163/* MADT Local APIC Address Override */
164struct acpi_madt_lapic_addr {
165 struct acpi_madt_ent mla_hdr;
166 uint16_t mla_reserved;
167 uint64_t mla_lapic_addr;
168} __packed;
169
91903a05
MN
170struct madt_lapic_enumerator {
171 struct lapic_enumerator enumerator;
172 vm_paddr_t madt_paddr;
173};
174
8e4c6923 175typedef vm_paddr_t (*madt_search_t)(vm_paddr_t);
0492bd82
MN
176typedef int (*madt_iter_t)(void *,
177 const struct acpi_madt_ent *);
8e4c6923
MN
178
179static const struct acpi_rsdp *madt_rsdp_search(const uint8_t *, int);
180static void *madt_sdth_map(vm_paddr_t);
181static void madt_sdth_unmap(struct acpi_sdth *);
182static vm_paddr_t madt_search_xsdt(vm_paddr_t);
183static vm_paddr_t madt_search_rsdt(vm_paddr_t);
4ad5917f 184static int madt_check(vm_paddr_t);
0492bd82
MN
185static int madt_iterate_entries(struct acpi_madt *,
186 madt_iter_t, void *);
8e4c6923 187
91903a05
MN
188static vm_paddr_t madt_probe(void);
189static vm_offset_t madt_pass1(vm_paddr_t);
190static int madt_pass2(vm_paddr_t, int);
191
192static void madt_lapic_enumerate(struct lapic_enumerator *);
193static int madt_lapic_probe(struct lapic_enumerator *);
194
8e4c6923
MN
195extern u_long ebda_addr;
196
91903a05 197static vm_paddr_t
8e4c6923
MN
198madt_probe(void)
199{
200 const struct acpi_rsdp *rsdp;
201 madt_search_t search;
202 vm_paddr_t search_paddr, madt_paddr;
203 vm_size_t mapsz;
204 uint8_t *ptr;
205
206 if (ebda_addr != 0) {
207 mapsz = ACPI_RSDP_EBDA_MAPSZ;
208 ptr = pmap_mapdev(ebda_addr, mapsz);
209
210 rsdp = madt_rsdp_search(ptr, mapsz);
211 if (rsdp == NULL) {
c87b587d 212 MADT_VPRINTF("RSDP not in EBDA\n");
8e4c6923
MN
213 pmap_unmapdev((vm_offset_t)ptr, mapsz);
214
215 ptr = NULL;
216 mapsz = 0;
217 } else {
c87b587d 218 MADT_VPRINTF("RSDP in EBDA\n");
8e4c6923
MN
219 goto found_rsdp;
220 }
221 }
222
223 mapsz = ACPI_RSDP_BIOS_MAPSZ;
224 ptr = pmap_mapdev(ACPI_RSDP_BIOS_MAPADDR, mapsz);
225
226 rsdp = madt_rsdp_search(ptr, mapsz);
227 if (rsdp == NULL) {
228 kprintf("madt_probe: no RSDP\n");
229 pmap_unmapdev((vm_offset_t)ptr, mapsz);
4ad5917f 230 return 0;
8e4c6923 231 } else {
c87b587d 232 MADT_VPRINTF("RSDP in BIOS mem\n");
8e4c6923
MN
233 }
234
235found_rsdp:
236 if (rsdp->rsdp_rev != 2) {
237 search_paddr = rsdp->rsdp_rsdt;
238 search = madt_search_rsdt;
239 } else {
240 search_paddr = rsdp->rsdp_xsdt;
241 search = madt_search_xsdt;
242 }
243 pmap_unmapdev((vm_offset_t)ptr, mapsz);
244
245 madt_paddr = search(search_paddr);
246 if (madt_paddr == 0) {
247 kprintf("madt_probe: can't locate MADT\n");
4ad5917f 248 return 0;
8e4c6923 249 }
4ad5917f
MN
250
251 /* Preliminary checks */
252 if (madt_check(madt_paddr))
253 return 0;
254 return madt_paddr;
8e4c6923
MN
255}
256
257static const struct acpi_rsdp *
258madt_rsdp_search(const uint8_t *target, int size)
259{
260 const struct acpi_rsdp *rsdp;
261 int i;
262
263 KKASSERT(size > sizeof(*rsdp));
264
265 for (i = 0; i < size - sizeof(*rsdp); i += ACPI_RSDP_ALIGN) {
266 rsdp = (const struct acpi_rsdp *)&target[i];
267 if (memcmp(rsdp->rsdp_sig, ACPI_RSDP_SIG,
268 ACPI_RSDP_SIGLEN) == 0)
269 return rsdp;
270 }
271 return NULL;
272}
273
274static void *
275madt_sdth_map(vm_paddr_t paddr)
276{
277 struct acpi_sdth *sdth;
278 vm_size_t mapsz;
279
280 sdth = pmap_mapdev(paddr, sizeof(*sdth));
281 mapsz = sdth->sdth_len;
282 pmap_unmapdev((vm_offset_t)sdth, sizeof(*sdth));
283
284 if (mapsz < sizeof(*sdth))
285 return NULL;
286
287 return pmap_mapdev(paddr, mapsz);
288}
289
290static void
291madt_sdth_unmap(struct acpi_sdth *sdth)
292{
293 pmap_unmapdev((vm_offset_t)sdth, sdth->sdth_len);
294}
295
296static vm_paddr_t
297madt_search_xsdt(vm_paddr_t xsdt_paddr)
298{
299 struct acpi_xsdt *xsdt;
300 vm_paddr_t madt_paddr = 0;
301 int i, nent;
302
303 if (xsdt_paddr == 0) {
304 kprintf("madt_search_xsdt: XSDT paddr == 0\n");
305 return 0;
306 }
307
308 xsdt = madt_sdth_map(xsdt_paddr);
309 if (xsdt == NULL) {
310 kprintf("madt_search_xsdt: can't map XSDT\n");
311 return 0;
312 }
313
314 if (memcmp(xsdt->xsdt_hdr.sdth_sig, ACPI_XSDT_SIG,
315 ACPI_SDTH_SIGLEN) != 0) {
316 kprintf("madt_search_xsdt: not XSDT\n");
317 goto back;
318 }
319
320 if (xsdt->xsdt_hdr.sdth_rev != 1) {
321 kprintf("madt_search_xsdt: unsupported XSDT revision %d\n",
322 xsdt->xsdt_hdr.sdth_rev);
323 goto back;
324 }
325
326 nent = (xsdt->xsdt_hdr.sdth_len - sizeof(xsdt->xsdt_hdr)) /
327 sizeof(xsdt->xsdt_ents[0]);
328 for (i = 0; i < nent; ++i) {
329 struct acpi_sdth *sdth;
330
331 if (xsdt->xsdt_ents[i] == 0)
332 continue;
333
334 sdth = madt_sdth_map(xsdt->xsdt_ents[i]);
335 if (sdth != NULL) {
336 int ret;
337
338 ret = memcmp(sdth->sdth_sig, ACPI_MADT_SIG,
339 ACPI_SDTH_SIGLEN);
340 madt_sdth_unmap(sdth);
341
342 if (ret == 0) {
c87b587d 343 MADT_VPRINTF("MADT in XSDT\n");
8e4c6923
MN
344 madt_paddr = xsdt->xsdt_ents[i];
345 break;
346 }
347 }
348 }
349back:
350 madt_sdth_unmap(&xsdt->xsdt_hdr);
351 return madt_paddr;
352}
353
354static vm_paddr_t
355madt_search_rsdt(vm_paddr_t rsdt_paddr)
356{
357 struct acpi_rsdt *rsdt;
358 vm_paddr_t madt_paddr = 0;
359 int i, nent;
360
361 if (rsdt_paddr == 0) {
362 kprintf("madt_search_rsdt: RSDT paddr == 0\n");
363 return 0;
364 }
365
366 rsdt = madt_sdth_map(rsdt_paddr);
367 if (rsdt == NULL) {
368 kprintf("madt_search_rsdt: can't map RSDT\n");
369 return 0;
370 }
371
372 if (memcmp(rsdt->rsdt_hdr.sdth_sig, ACPI_RSDT_SIG,
373 ACPI_SDTH_SIGLEN) != 0) {
374 kprintf("madt_search_rsdt: not RSDT\n");
375 goto back;
376 }
377
378 if (rsdt->rsdt_hdr.sdth_rev != 1) {
379 kprintf("madt_search_rsdt: unsupported RSDT revision %d\n",
380 rsdt->rsdt_hdr.sdth_rev);
381 goto back;
382 }
383
384 nent = (rsdt->rsdt_hdr.sdth_len - sizeof(rsdt->rsdt_hdr)) /
385 sizeof(rsdt->rsdt_ents[0]);
386 for (i = 0; i < nent; ++i) {
387 struct acpi_sdth *sdth;
388
389 if (rsdt->rsdt_ents[i] == 0)
390 continue;
391
392 sdth = madt_sdth_map(rsdt->rsdt_ents[i]);
393 if (sdth != NULL) {
394 int ret;
395
396 ret = memcmp(sdth->sdth_sig, ACPI_MADT_SIG,
397 ACPI_SDTH_SIGLEN);
398 madt_sdth_unmap(sdth);
399
400 if (ret == 0) {
c87b587d 401 MADT_VPRINTF("MADT in RSDT\n");
8e4c6923
MN
402 madt_paddr = rsdt->rsdt_ents[i];
403 break;
404 }
405 }
406 }
407back:
408 madt_sdth_unmap(&rsdt->rsdt_hdr);
409 return madt_paddr;
410}
411
ebbde674
MN
412static int
413madt_pass1_callback(void *xarg, const struct acpi_madt_ent *ent)
414{
415 const struct acpi_madt_lapic_addr *lapic_addr_ent;
416 uint64_t *addr64 = xarg;
417
418 if (ent->me_type != MADT_ENT_LAPIC_ADDR)
419 return 0;
420 if (ent->me_len < sizeof(*lapic_addr_ent)) {
421 kprintf("madt_pass1: invalid LAPIC address override length\n");
422 return 0;
423 }
424 lapic_addr_ent = (const struct acpi_madt_lapic_addr *)ent;
425
426 *addr64 = lapic_addr_ent->mla_lapic_addr;
427 return 0;
428}
429
91903a05 430static vm_offset_t
4ad5917f 431madt_pass1(vm_paddr_t madt_paddr)
8e4c6923
MN
432{
433 struct acpi_madt *madt;
4ad5917f 434 vm_offset_t lapic_addr;
ebbde674
MN
435 uint64_t lapic_addr64;
436 int error;
8e4c6923
MN
437
438 KKASSERT(madt_paddr != 0);
439
440 madt = madt_sdth_map(madt_paddr);
441 KKASSERT(madt != NULL);
442
c87b587d
MN
443 MADT_VPRINTF("LAPIC address 0x%08x, flags %#x\n",
444 madt->madt_lapic_addr, madt->madt_flags);
4ad5917f
MN
445 lapic_addr = madt->madt_lapic_addr;
446
ebbde674
MN
447 lapic_addr64 = 0;
448 error = madt_iterate_entries(madt, madt_pass1_callback, &lapic_addr64);
449 if (error)
450 panic("madt_iterate_entries(pass1) failed\n");
451
452 if (lapic_addr64 != 0) {
cb31590d
SZ
453 kprintf("ACPI MADT: 64bits lapic address 0x%lx\n",
454 lapic_addr64);
ebbde674
MN
455 lapic_addr = lapic_addr64;
456 }
457
4ad5917f
MN
458 madt_sdth_unmap(&madt->madt_hdr);
459
460 return lapic_addr;
461}
462
2c394345
MN
463struct madt_pass2_cbarg {
464 int cpu;
465 int bsp_found;
466 int bsp_apic_id;
467};
468
469static int
470madt_pass2_callback(void *xarg, const struct acpi_madt_ent *ent)
471{
472 const struct acpi_madt_lapic *lapic_ent;
473 struct madt_pass2_cbarg *arg = xarg;
474
475 if (ent->me_type != MADT_ENT_LAPIC)
476 return 0;
477
478 lapic_ent = (const struct acpi_madt_lapic *)ent;
479 if (lapic_ent->ml_flags & MADT_LAPIC_ENABLED) {
c87b587d
MN
480 MADT_VPRINTF("cpu_id %d, apic_id %d\n",
481 lapic_ent->ml_cpu_id, lapic_ent->ml_apic_id);
2c394345
MN
482 if (lapic_ent->ml_apic_id == arg->bsp_apic_id) {
483 mp_set_cpuids(0, lapic_ent->ml_apic_id);
484 arg->bsp_found = 1;
485 } else {
486 mp_set_cpuids(arg->cpu, lapic_ent->ml_apic_id);
487 arg->cpu++;
488 }
489 }
490 return 0;
491}
492
91903a05 493static int
4ad5917f
MN
494madt_pass2(vm_paddr_t madt_paddr, int bsp_apic_id)
495{
496 struct acpi_madt *madt;
2c394345
MN
497 struct madt_pass2_cbarg arg;
498 int error;
4ad5917f 499
c87b587d 500 MADT_VPRINTF("BSP apic id %d\n", bsp_apic_id);
4ad5917f
MN
501
502 KKASSERT(madt_paddr != 0);
503
504 madt = madt_sdth_map(madt_paddr);
505 KKASSERT(madt != NULL);
8e4c6923 506
2c394345
MN
507 bzero(&arg, sizeof(arg));
508 arg.cpu = 1;
509 arg.bsp_apic_id = bsp_apic_id;
8e4c6923 510
2c394345
MN
511 error = madt_iterate_entries(madt, madt_pass2_callback, &arg);
512 if (error)
513 panic("madt_iterate_entries(pass2) failed\n");
8e4c6923 514
2c394345
MN
515 KKASSERT(arg.bsp_found);
516 KKASSERT(arg.cpu > 1);
517 mp_naps = arg.cpu - 1; /* exclude BSP */
4ad5917f
MN
518
519 madt_sdth_unmap(&madt->madt_hdr);
2c394345
MN
520
521 return 0;
4ad5917f
MN
522}
523
0492bd82
MN
524struct madt_check_cbarg {
525 int cpu_count;
526};
527
528static int
529madt_check_callback(void *xarg, const struct acpi_madt_ent *ent)
530{
531 struct madt_check_cbarg *arg = xarg;
532 const struct acpi_madt_lapic *lapic_ent;
533
534 if (ent->me_type != MADT_ENT_LAPIC)
535 return 0;
536 lapic_ent = (const struct acpi_madt_lapic *)ent;
537
1c1f402e 538 if (lapic_ent->ml_flags & MADT_LAPIC_ENABLED)
0492bd82
MN
539 arg->cpu_count++;
540 return 0;
541}
542
4ad5917f
MN
543static int
544madt_check(vm_paddr_t madt_paddr)
545{
0492bd82 546 struct madt_check_cbarg arg;
4ad5917f
MN
547 struct acpi_madt *madt;
548 int error = 0;
549
550 KKASSERT(madt_paddr != 0);
551
552 madt = madt_sdth_map(madt_paddr);
553 KKASSERT(madt != NULL);
554
555 if (madt->madt_hdr.sdth_rev != 1 && madt->madt_hdr.sdth_rev != 2) {
556 kprintf("madt_check: unsupported MADT revision %d\n",
557 madt->madt_hdr.sdth_rev);
558 error = EOPNOTSUPP;
559 goto back;
560 }
561
562 if (madt->madt_hdr.sdth_len <
563 sizeof(*madt) - sizeof(madt->madt_ents)) {
564 kprintf("madt_check: invalid MADT length %u\n",
565 madt->madt_hdr.sdth_len);
566 error = EINVAL;
0492bd82
MN
567 goto back;
568 }
569
570 bzero(&arg, sizeof(arg));
ee5932ac 571
0492bd82
MN
572 error = madt_iterate_entries(madt, madt_check_callback, &arg);
573 if (!error) {
ee5932ac
MN
574 if (arg.cpu_count <= 1) {
575 kprintf("madt_check: less than 2 CPUs is found\n");
0492bd82 576 error = EOPNOTSUPP;
ee5932ac 577 }
4ad5917f 578 }
8e4c6923
MN
579back:
580 madt_sdth_unmap(&madt->madt_hdr);
581 return error;
582}
4ad5917f 583
0492bd82
MN
584static int
585madt_iterate_entries(struct acpi_madt *madt, madt_iter_t func, void *arg)
586{
587 int size, cur, error;
588
589 size = madt->madt_hdr.sdth_len -
590 (sizeof(*madt) - sizeof(madt->madt_ents));
591 cur = 0;
592 error = 0;
593
594 while (size - cur > sizeof(struct acpi_madt_ent)) {
595 const struct acpi_madt_ent *ent;
596
597 ent = (const struct acpi_madt_ent *)&madt->madt_ents[cur];
598 if (ent->me_len < sizeof(*ent)) {
599 kprintf("madt_iterate_entries: invalid MADT "
600 "entry len %d\n", ent->me_len);
601 error = EINVAL;
602 break;
603 }
604 if (ent->me_len > (size - cur)) {
605 kprintf("madt_iterate_entries: invalid MADT "
606 "entry len %d, > table length\n", ent->me_len);
607 error = EINVAL;
608 break;
609 }
610
611 cur += ent->me_len;
612
613 /*
2bbbec42
SZ
614 * Only Local APIC, I/O APIC and Interrupt Source Override
615 * are defined in ACPI specification 1.0 - 4.0
0492bd82
MN
616 */
617 switch (ent->me_type) {
618 case MADT_ENT_LAPIC:
619 if (ent->me_len < sizeof(struct acpi_madt_lapic)) {
620 kprintf("madt_iterate_entries: invalid MADT "
621 "lapic entry len %d\n", ent->me_len);
622 error = EINVAL;
623 }
624 break;
625
626 case MADT_ENT_IOAPIC:
627 if (ent->me_len < sizeof(struct acpi_madt_ioapic)) {
628 kprintf("madt_iterate_entries: invalid MADT "
629 "ioapic entry len %d\n", ent->me_len);
630 error = EINVAL;
631 }
632 break;
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SZ
633
634 case MADT_ENT_INTSRC_OVR:
635 if (ent->me_len < sizeof(struct acpi_madt_intsrc_ovr)) {
636 kprintf("madt_iterate_entries: invalid MADT "
637 "intsrc_ovr entry len %d\n",
638 ent->me_len);
639 error = EINVAL;
640 }
641 break;
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642 }
643 if (error)
644 break;
645
646 error = func(arg, ent);
647 if (error)
648 break;
649 }
650 return error;
651}
652
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653static int
654madt_lapic_probe(struct lapic_enumerator *e)
655{
656 vm_paddr_t madt_paddr;
657
658 madt_paddr = madt_probe();
659 if (madt_paddr == 0)
660 return ENXIO;
661
662 ((struct madt_lapic_enumerator *)e)->madt_paddr = madt_paddr;
663 return 0;
664}
665
666static void
667madt_lapic_enumerate(struct lapic_enumerator *e)
668{
669 vm_paddr_t madt_paddr;
670 vm_offset_t lapic_addr;
671 int bsp_apic_id;
672
673 madt_paddr = ((struct madt_lapic_enumerator *)e)->madt_paddr;
674 KKASSERT(madt_paddr != 0);
675
676 lapic_addr = madt_pass1(madt_paddr);
677 if (lapic_addr == 0)
678 panic("madt_lapic_enumerate no local apic\n");
679
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680 lapic_init(lapic_addr);
681
682 bsp_apic_id = APIC_ID(lapic->id);
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683 if (madt_pass2(madt_paddr, bsp_apic_id))
684 panic("mp_enable: madt_pass2 failed\n");
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685}
686
687static struct madt_lapic_enumerator madt_lapic_enumerator = {
688 .enumerator = {
689 .lapic_prio = LAPIC_ENUM_PRIO_MADT,
690 .lapic_probe = madt_lapic_probe,
691 .lapic_enumerate = madt_lapic_enumerate
692 }
693};
694
695static void
94b7f5c1 696madt_lapic_register(void)
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697{
698 int prio;
699
700 prio = LAPIC_ENUM_PRIO_MADT;
701 kgetenv_int("hw.madt_lapic_prio", &prio);
702 madt_lapic_enumerator.enumerator.lapic_prio = prio;
703
704 lapic_enumerator_register(&madt_lapic_enumerator.enumerator);
705}
94b7f5c1 706SYSINIT(madt, SI_BOOT2_PRESMP, SI_ORDER_ANY, madt_lapic_register, 0);