FreeBSD/Linux Kernel Cross Reference
sys/i386/acpica/madt.c
1 /*-
2 * Copyright (c) 2003 John Baldwin <jhb@FreeBSD.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of the author nor the names of any co-contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30 #include <sys/cdefs.h>
31 __FBSDID("$FreeBSD: src/sys/i386/acpica/madt.c,v 1.17.2.1 2005/02/27 21:28:18 obrien Exp $");
32
33 #include <sys/param.h>
34 #include <sys/systm.h>
35 #include <sys/bus.h>
36 #include <sys/kernel.h>
37 #include <sys/malloc.h>
38 #include <sys/smp.h>
39
40 #include <vm/vm.h>
41 #include <vm/vm_param.h>
42 #include <vm/pmap.h>
43
44 #include <machine/apicreg.h>
45 #include <machine/frame.h>
46 #include <machine/intr_machdep.h>
47 #include <machine/apicvar.h>
48 #include <machine/md_var.h>
49 #include <machine/specialreg.h>
50
51 #include "acpi.h"
52 #include <contrib/dev/acpica/actables.h>
53 #include <dev/acpica/acpivar.h>
54 #include <dev/pci/pcivar.h>
55
56 #define NIOAPICS 32 /* Max number of I/O APICs */
57 #define NLAPICS 32 /* Max number of local APICs */
58
59 typedef void madt_entry_handler(APIC_HEADER *entry, void *arg);
60
61 /* These two arrays are indexed by APIC IDs. */
62 struct ioapic_info {
63 void *io_apic;
64 UINT32 io_vector;
65 } ioapics[NIOAPICS];
66
67 struct lapic_info {
68 u_int la_enabled:1;
69 u_int la_acpi_id:8;
70 } lapics[NLAPICS];
71
72 static int madt_found_sci_override;
73 static MULTIPLE_APIC_TABLE *madt;
74 static vm_paddr_t madt_physaddr;
75 static vm_offset_t madt_length;
76
77 MALLOC_DEFINE(M_MADT, "MADT Table", "ACPI MADT Table Items");
78
79 static enum intr_polarity interrupt_polarity(UINT16 Polarity, UINT8 Source);
80 static enum intr_trigger interrupt_trigger(UINT16 TriggerMode, UINT8 Source);
81 static int madt_find_cpu(u_int acpi_id, u_int *apic_id);
82 static int madt_find_interrupt(int intr, void **apic, u_int *pin);
83 static void *madt_map(vm_paddr_t pa, int offset, vm_offset_t length);
84 static void *madt_map_table(vm_paddr_t pa, int offset, const char *sig);
85 static void madt_parse_apics(APIC_HEADER *entry, void *arg);
86 static void madt_parse_interrupt_override(MADT_INTERRUPT_OVERRIDE *intr);
87 static void madt_parse_ints(APIC_HEADER *entry, void *arg __unused);
88 static void madt_parse_local_nmi(MADT_LOCAL_APIC_NMI *nmi);
89 static void madt_parse_nmi(MADT_NMI_SOURCE *nmi);
90 static int madt_probe(void);
91 static int madt_probe_cpus(void);
92 static void madt_probe_cpus_handler(APIC_HEADER *entry, void *arg __unused);
93 static int madt_probe_table(vm_paddr_t address);
94 static void madt_register(void *dummy);
95 static int madt_setup_local(void);
96 static int madt_setup_io(void);
97 static void madt_unmap(void *data, vm_offset_t length);
98 static void madt_unmap_table(void *table);
99 static void madt_walk_table(madt_entry_handler *handler, void *arg);
100
101 static struct apic_enumerator madt_enumerator = {
102 "MADT",
103 madt_probe,
104 madt_probe_cpus,
105 madt_setup_local,
106 madt_setup_io
107 };
108
109 /*
110 * Code to abuse the crashdump map to map in the tables for the early
111 * probe. We cheat and make the following assumptions about how we
112 * use this KVA: page 0 is used to map in the first page of each table
113 * found via the RSDT or XSDT and pages 1 to n are used to map in the
114 * RSDT or XSDT. The offset is in pages; the length is in bytes.
115 */
116 static void *
117 madt_map(vm_paddr_t pa, int offset, vm_offset_t length)
118 {
119 vm_offset_t va, off;
120 void *data;
121
122 off = pa & PAGE_MASK;
123 length = roundup(length + off, PAGE_SIZE);
124 pa = pa & PG_FRAME;
125 va = (vm_offset_t)pmap_kenter_temporary(pa, offset) +
126 (offset * PAGE_SIZE);
127 data = (void *)(va + off);
128 length -= PAGE_SIZE;
129 while (length > 0) {
130 va += PAGE_SIZE;
131 pa += PAGE_SIZE;
132 length -= PAGE_SIZE;
133 pmap_kenter(va, pa);
134 invlpg(va);
135 }
136 return (data);
137 }
138
139 static void
140 madt_unmap(void *data, vm_offset_t length)
141 {
142 vm_offset_t va, off;
143
144 va = (vm_offset_t)data;
145 off = va & PAGE_MASK;
146 length = roundup(length + off, PAGE_SIZE);
147 va &= ~PAGE_MASK;
148 while (length > 0) {
149 pmap_kremove(va);
150 invlpg(va);
151 va += PAGE_SIZE;
152 length -= PAGE_SIZE;
153 }
154 }
155
156 static void *
157 madt_map_table(vm_paddr_t pa, int offset, const char *sig)
158 {
159 ACPI_TABLE_HEADER *header;
160 vm_offset_t length;
161 void *table;
162
163 header = madt_map(pa, offset, sizeof(ACPI_TABLE_HEADER));
164 if (strncmp(header->Signature, sig, 4) != 0) {
165 madt_unmap(header, sizeof(ACPI_TABLE_HEADER));
166 return (NULL);
167 }
168 length = header->Length;
169 madt_unmap(header, sizeof(ACPI_TABLE_HEADER));
170 table = madt_map(pa, offset, length);
171 if (ACPI_FAILURE(AcpiTbVerifyTableChecksum(table))) {
172 if (bootverbose)
173 printf("MADT: Failed checksum for table %s\n", sig);
174 madt_unmap(table, length);
175 return (NULL);
176 }
177 return (table);
178 }
179
180 static void
181 madt_unmap_table(void *table)
182 {
183 ACPI_TABLE_HEADER *header;
184
185 header = (ACPI_TABLE_HEADER *)table;
186 madt_unmap(table, header->Length);
187 }
188
189 /*
190 * Look for an ACPI Multiple APIC Description Table ("APIC")
191 */
192 static int
193 madt_probe(void)
194 {
195 ACPI_POINTER rsdp_ptr;
196 RSDP_DESCRIPTOR *rsdp;
197 RSDT_DESCRIPTOR *rsdt;
198 XSDT_DESCRIPTOR *xsdt;
199 int i, count;
200
201 if (resource_disabled("acpi", 0))
202 return (ENXIO);
203
204 /*
205 * Map in the RSDP. Since ACPI uses AcpiOsMapMemory() which in turn
206 * calls pmap_mapdev() to find the RSDP, we assume that we can use
207 * pmap_mapdev() to map the RSDP.
208 */
209 if (AcpiOsGetRootPointer(ACPI_LOGICAL_ADDRESSING, &rsdp_ptr) != AE_OK)
210 return (ENXIO);
211 #ifdef __i386__
212 KASSERT(rsdp_ptr.Pointer.Physical < KERNLOAD, ("RSDP too high"));
213 #endif
214 rsdp = pmap_mapdev(rsdp_ptr.Pointer.Physical, sizeof(RSDP_DESCRIPTOR));
215 if (rsdp == NULL) {
216 if (bootverbose)
217 printf("MADT: Failed to map RSDP\n");
218 return (ENXIO);
219 }
220
221 /*
222 * For ACPI < 2.0, use the RSDT. For ACPI >= 2.0, use the XSDT.
223 * We map the XSDT and RSDT at page 1 in the crashdump area.
224 * Page 0 is used to map in the headers of candidate ACPI tables.
225 */
226 if (rsdp->Revision >= 2) {
227 /*
228 * AcpiOsGetRootPointer only verifies the checksum for
229 * the version 1.0 portion of the RSDP. Version 2.0 has
230 * an additional checksum that we verify first.
231 */
232 if (AcpiTbChecksum(rsdp, ACPI_RSDP_XCHECKSUM_LENGTH) != 0) {
233 if (bootverbose)
234 printf("MADT: RSDP failed extended checksum\n");
235 return (ENXIO);
236 }
237 xsdt = madt_map_table(rsdp->XsdtPhysicalAddress, 1, XSDT_SIG);
238 if (xsdt == NULL) {
239 if (bootverbose)
240 printf("MADT: Failed to map XSDT\n");
241 return (ENXIO);
242 }
243 count = (xsdt->Length - sizeof(ACPI_TABLE_HEADER)) /
244 sizeof(UINT64);
245 for (i = 0; i < count; i++)
246 if (madt_probe_table(xsdt->TableOffsetEntry[i]))
247 break;
248 madt_unmap_table(xsdt);
249 } else {
250 rsdt = madt_map_table(rsdp->RsdtPhysicalAddress, 1, RSDT_SIG);
251 if (rsdt == NULL) {
252 if (bootverbose)
253 printf("MADT: Failed to map RSDT\n");
254 return (ENXIO);
255 }
256 count = (rsdt->Length - sizeof(ACPI_TABLE_HEADER)) /
257 sizeof(UINT32);
258 for (i = 0; i < count; i++)
259 if (madt_probe_table(rsdt->TableOffsetEntry[i]))
260 break;
261 madt_unmap_table(rsdt);
262 }
263 pmap_unmapdev((vm_offset_t)rsdp, sizeof(RSDP_DESCRIPTOR));
264 if (madt_physaddr == 0) {
265 if (bootverbose)
266 printf("MADT: No MADT table found\n");
267 return (ENXIO);
268 }
269 if (bootverbose)
270 printf("MADT: Found table at 0x%jx\n",
271 (uintmax_t)madt_physaddr);
272
273 /*
274 * Verify that we can map the full table and that its checksum is
275 * correct, etc.
276 */
277 madt = madt_map_table(madt_physaddr, 0, APIC_SIG);
278 if (madt == NULL)
279 return (ENXIO);
280 madt_unmap_table(madt);
281 madt = NULL;
282
283 return (0);
284 }
285
286 /*
287 * See if a given ACPI table is the MADT.
288 */
289 static int
290 madt_probe_table(vm_paddr_t address)
291 {
292 ACPI_TABLE_HEADER *table;
293
294 table = madt_map(address, 0, sizeof(ACPI_TABLE_HEADER));
295 if (table == NULL) {
296 if (bootverbose)
297 printf("MADT: Failed to map table at 0x%jx\n",
298 (uintmax_t)address);
299 return (0);
300 }
301 if (bootverbose)
302 printf("Table '%.4s' at 0x%jx\n", table->Signature,
303 (uintmax_t)address);
304
305 if (strncmp(table->Signature, APIC_SIG, 4) != 0) {
306 madt_unmap(table, sizeof(ACPI_TABLE_HEADER));
307 return (0);
308 }
309 madt_physaddr = address;
310 madt_length = table->Length;
311 madt_unmap(table, sizeof(ACPI_TABLE_HEADER));
312 return (1);
313 }
314
315 /*
316 * Run through the MP table enumerating CPUs.
317 */
318 static int
319 madt_probe_cpus(void)
320 {
321
322 madt = madt_map_table(madt_physaddr, 0, APIC_SIG);
323 KASSERT(madt != NULL, ("Unable to re-map MADT"));
324 madt_walk_table(madt_probe_cpus_handler, NULL);
325 madt_unmap_table(madt);
326 madt = NULL;
327 return (0);
328 }
329
330 /*
331 * Initialize the local APIC on the BSP.
332 */
333 static int
334 madt_setup_local(void)
335 {
336
337 madt = pmap_mapdev(madt_physaddr, madt_length);
338 lapic_init((uintptr_t)madt->LocalApicAddress);
339 printf("ACPI APIC Table: <%.*s %.*s>\n",
340 (int)sizeof(madt->OemId), madt->OemId,
341 (int)sizeof(madt->OemTableId), madt->OemTableId);
342
343 /*
344 * We ignore 64-bit local APIC override entries. Should we
345 * perhaps emit a warning here if we find one?
346 */
347 return (0);
348 }
349
350 /*
351 * Enumerate I/O APICs and setup interrupt sources.
352 */
353 static int
354 madt_setup_io(void)
355 {
356 void *ioapic;
357 u_int pin;
358 int i;
359
360 /* Try to initialize ACPI so that we can access the FADT. */
361 i = acpi_Startup();
362 if (ACPI_FAILURE(i)) {
363 printf("MADT: ACPI Startup failed with %s\n",
364 AcpiFormatException(i));
365 printf("Try disabling either ACPI or apic support.\n");
366 panic("Using MADT but ACPI doesn't work");
367 }
368
369 /* First, we run through adding I/O APIC's. */
370 if (madt->PCATCompat && !(acpi_quirks & ACPI_Q_MADT_IRQ0))
371 ioapic_enable_mixed_mode();
372 madt_walk_table(madt_parse_apics, NULL);
373
374 /* Second, we run through the table tweaking interrupt sources. */
375 madt_walk_table(madt_parse_ints, NULL);
376
377 /*
378 * If there was not an explicit override entry for the SCI,
379 * force it to use level trigger and active-low polarity.
380 */
381 if (!madt_found_sci_override) {
382 if (madt_find_interrupt(AcpiGbl_FADT->SciInt, &ioapic, &pin)
383 != 0)
384 printf("MADT: Could not find APIC for SCI IRQ %d\n",
385 AcpiGbl_FADT->SciInt);
386 else {
387 printf(
388 "MADT: Forcing active-low polarity and level trigger for SCI\n");
389 ioapic_set_polarity(ioapic, pin, INTR_POLARITY_LOW);
390 ioapic_set_triggermode(ioapic, pin, INTR_TRIGGER_LEVEL);
391 }
392 }
393
394 /* Third, we register all the I/O APIC's. */
395 for (i = 0; i < NIOAPICS; i++)
396 if (ioapics[i].io_apic != NULL)
397 ioapic_register(ioapics[i].io_apic);
398
399 /* Finally, we throw the switch to enable the I/O APIC's. */
400 acpi_SetDefaultIntrModel(ACPI_INTR_APIC);
401
402 return (0);
403 }
404
405 static void
406 madt_register(void *dummy __unused)
407 {
408
409 apic_register_enumerator(&madt_enumerator);
410 }
411 SYSINIT(madt_register, SI_SUB_CPU - 1, SI_ORDER_FIRST, madt_register, NULL)
412
413 /*
414 * Call the handler routine for each entry in the MADT table.
415 */
416 static void
417 madt_walk_table(madt_entry_handler *handler, void *arg)
418 {
419 APIC_HEADER *entry;
420 u_char *p, *end;
421
422 end = (u_char *)(madt) + madt->Length;
423 for (p = (u_char *)(madt + 1); p < end; ) {
424 entry = (APIC_HEADER *)p;
425 handler(entry, arg);
426 p += entry->Length;
427 }
428 }
429
430 static void
431 madt_probe_cpus_handler(APIC_HEADER *entry, void *arg)
432 {
433 MADT_PROCESSOR_APIC *proc;
434 struct lapic_info *la;
435
436 switch (entry->Type) {
437 case APIC_PROCESSOR:
438 /*
439 * The MADT does not include a BSP flag, so we have to
440 * let the MP code figure out which CPU is the BSP on
441 * its own.
442 */
443 proc = (MADT_PROCESSOR_APIC *)entry;
444 if (bootverbose)
445 printf("MADT: Found CPU APIC ID %d ACPI ID %d: %s\n",
446 proc->LocalApicId, proc->ProcessorId,
447 proc->ProcessorEnabled ? "enabled" : "disabled");
448 if (!proc->ProcessorEnabled)
449 break;
450 if (proc->LocalApicId >= NLAPICS)
451 panic("%s: CPU ID %d too high", __func__,
452 proc->LocalApicId);
453 la = &lapics[proc->LocalApicId];
454 KASSERT(la->la_enabled == 0,
455 ("Duplicate local APIC ID %d", proc->LocalApicId));
456 la->la_enabled = 1;
457 la->la_acpi_id = proc->ProcessorId;
458 lapic_create(proc->LocalApicId, 0);
459 break;
460 }
461 }
462
463
464 /*
465 * Add an I/O APIC from an entry in the table.
466 */
467 static void
468 madt_parse_apics(APIC_HEADER *entry, void *arg __unused)
469 {
470 MADT_IO_APIC *apic;
471
472 switch (entry->Type) {
473 case APIC_IO:
474 apic = (MADT_IO_APIC *)entry;
475 if (bootverbose)
476 printf("MADT: Found IO APIC ID %d, Interrupt %d at %p\n",
477 apic->IoApicId, apic->Interrupt,
478 (void *)(uintptr_t)apic->Address);
479 if (apic->IoApicId >= NIOAPICS)
480 panic("%s: I/O APIC ID %d too high", __func__,
481 apic->IoApicId);
482 if (ioapics[apic->IoApicId].io_apic != NULL)
483 panic("%s: Double APIC ID %d", __func__,
484 apic->IoApicId);
485 ioapics[apic->IoApicId].io_apic = ioapic_create(
486 (uintptr_t)apic->Address, apic->IoApicId,
487 apic->Interrupt);
488 ioapics[apic->IoApicId].io_vector = apic->Interrupt;
489 break;
490 default:
491 break;
492 }
493 }
494
495 /*
496 * Determine properties of an interrupt source. Note that for ACPI these
497 * functions are only used for ISA interrupts, so we assume ISA bus values
498 * (Active Hi, Edge Triggered) for conforming values except for the ACPI
499 * SCI for which we use Active Lo, Level Triggered.
500 */
501 static enum intr_polarity
502 interrupt_polarity(UINT16 Polarity, UINT8 Source)
503 {
504
505 switch (Polarity) {
506 case POLARITY_CONFORMS:
507 if (Source == AcpiGbl_FADT->SciInt)
508 return (INTR_POLARITY_LOW);
509 else
510 return (INTR_POLARITY_HIGH);
511 case POLARITY_ACTIVE_HIGH:
512 return (INTR_POLARITY_HIGH);
513 case POLARITY_ACTIVE_LOW:
514 return (INTR_POLARITY_LOW);
515 default:
516 panic("Bogus Interrupt Polarity");
517 }
518 }
519
520 static enum intr_trigger
521 interrupt_trigger(UINT16 TriggerMode, UINT8 Source)
522 {
523
524 switch (TriggerMode) {
525 case TRIGGER_CONFORMS:
526 if (Source == AcpiGbl_FADT->SciInt)
527 return (INTR_TRIGGER_LEVEL);
528 else
529 return (INTR_TRIGGER_EDGE);
530 case TRIGGER_EDGE:
531 return (INTR_TRIGGER_EDGE);
532 case TRIGGER_LEVEL:
533 return (INTR_TRIGGER_LEVEL);
534 default:
535 panic("Bogus Interrupt Trigger Mode");
536 }
537 }
538
539 /*
540 * Find the local APIC ID associated with a given ACPI Processor ID.
541 */
542 static int
543 madt_find_cpu(u_int acpi_id, u_int *apic_id)
544 {
545 int i;
546
547 for (i = 0; i < NLAPICS; i++) {
548 if (!lapics[i].la_enabled)
549 continue;
550 if (lapics[i].la_acpi_id != acpi_id)
551 continue;
552 *apic_id = i;
553 return (0);
554 }
555 return (ENOENT);
556 }
557
558 /*
559 * Find the IO APIC and pin on that APIC associated with a given global
560 * interrupt.
561 */
562 static int
563 madt_find_interrupt(int intr, void **apic, u_int *pin)
564 {
565 int i, best;
566
567 best = -1;
568 for (i = 0; i < NIOAPICS; i++) {
569 if (ioapics[i].io_apic == NULL ||
570 ioapics[i].io_vector > intr)
571 continue;
572 if (best == -1 ||
573 ioapics[best].io_vector < ioapics[i].io_vector)
574 best = i;
575 }
576 if (best == -1)
577 return (ENOENT);
578 *apic = ioapics[best].io_apic;
579 *pin = intr - ioapics[best].io_vector;
580 if (*pin > 32)
581 printf("WARNING: Found intpin of %u for vector %d\n", *pin,
582 intr);
583 return (0);
584 }
585
586 /*
587 * Parse an interrupt source override for an ISA interrupt.
588 */
589 static void
590 madt_parse_interrupt_override(MADT_INTERRUPT_OVERRIDE *intr)
591 {
592 void *new_ioapic, *old_ioapic;
593 u_int new_pin, old_pin;
594 enum intr_trigger trig;
595 enum intr_polarity pol;
596 char buf[64];
597
598 if (acpi_quirks & ACPI_Q_MADT_IRQ0 && intr->Source == 0 &&
599 intr->Interrupt == 2) {
600 if (bootverbose)
601 printf("MADT: Skipping timer override\n");
602 return;
603 }
604 if (bootverbose)
605 printf("MADT: Interrupt override: source %u, irq %u\n",
606 intr->Source, intr->Interrupt);
607 KASSERT(intr->Bus == 0, ("bus for interrupt overrides must be zero"));
608 if (madt_find_interrupt(intr->Interrupt, &new_ioapic,
609 &new_pin) != 0) {
610 printf("MADT: Could not find APIC for vector %d (IRQ %d)\n",
611 intr->Interrupt, intr->Source);
612 return;
613 }
614
615 /*
616 * Lookup the appropriate trigger and polarity modes for this
617 * entry.
618 */
619 trig = interrupt_trigger(intr->TriggerMode, intr->Source);
620 pol = interrupt_polarity(intr->Polarity, intr->Source);
621
622 /*
623 * If the SCI is identity mapped but has edge trigger and
624 * active-hi polarity or the force_sci_lo tunable is set,
625 * force it to use level/lo.
626 */
627 if (intr->Source == AcpiGbl_FADT->SciInt) {
628 madt_found_sci_override = 1;
629 if (getenv_string("hw.acpi.sci.trigger", buf, sizeof(buf))) {
630 if (tolower(buf[0]) == 'e')
631 trig = INTR_TRIGGER_EDGE;
632 else if (tolower(buf[0]) == 'l')
633 trig = INTR_TRIGGER_LEVEL;
634 else
635 panic(
636 "Invalid trigger %s: must be 'edge' or 'level'",
637 buf);
638 printf("MADT: Forcing SCI to %s trigger\n",
639 trig == INTR_TRIGGER_EDGE ? "edge" : "level");
640 }
641 if (getenv_string("hw.acpi.sci.polarity", buf, sizeof(buf))) {
642 if (tolower(buf[0]) == 'h')
643 pol = INTR_POLARITY_HIGH;
644 else if (tolower(buf[0]) == 'l')
645 pol = INTR_POLARITY_LOW;
646 else
647 panic(
648 "Invalid polarity %s: must be 'high' or 'low'",
649 buf);
650 printf("MADT: Forcing SCI to active %s polarity\n",
651 pol == INTR_POLARITY_HIGH ? "high" : "low");
652 }
653 }
654
655 /* Remap the IRQ if it is mapped to a different interrupt vector. */
656 if (intr->Source != intr->Interrupt) {
657 /*
658 * If the SCI is remapped to a non-ISA global interrupt,
659 * then override the vector we use to setup and allocate
660 * the interrupt.
661 */
662 if (intr->Interrupt > 15 &&
663 intr->Source == AcpiGbl_FADT->SciInt)
664 acpi_OverrideInterruptLevel(intr->Interrupt);
665 else
666 ioapic_remap_vector(new_ioapic, new_pin, intr->Source);
667 if (madt_find_interrupt(intr->Source, &old_ioapic,
668 &old_pin) != 0)
669 printf("MADT: Could not find APIC for source IRQ %d\n",
670 intr->Source);
671 else if (ioapic_get_vector(old_ioapic, old_pin) ==
672 intr->Source)
673 ioapic_disable_pin(old_ioapic, old_pin);
674 }
675
676 /* Program the polarity and trigger mode. */
677 ioapic_set_triggermode(new_ioapic, new_pin, trig);
678 ioapic_set_polarity(new_ioapic, new_pin, pol);
679 }
680
681 /*
682 * Parse an entry for an NMI routed to an IO APIC.
683 */
684 static void
685 madt_parse_nmi(MADT_NMI_SOURCE *nmi)
686 {
687 void *ioapic;
688 u_int pin;
689
690 if (madt_find_interrupt(nmi->Interrupt, &ioapic, &pin) != 0) {
691 printf("MADT: Could not find APIC for vector %d\n",
692 nmi->Interrupt);
693 return;
694 }
695
696 ioapic_set_nmi(ioapic, pin);
697 if (nmi->TriggerMode != TRIGGER_CONFORMS)
698 ioapic_set_triggermode(ioapic, pin,
699 interrupt_trigger(nmi->TriggerMode, 0));
700 if (nmi->Polarity != TRIGGER_CONFORMS)
701 ioapic_set_polarity(ioapic, pin,
702 interrupt_polarity(nmi->Polarity, 0));
703 }
704
705 /*
706 * Parse an entry for an NMI routed to a local APIC LVT pin.
707 */
708 static void
709 madt_parse_local_nmi(MADT_LOCAL_APIC_NMI *nmi)
710 {
711 u_int apic_id, pin;
712
713 if (nmi->ProcessorId == 0xff)
714 apic_id = APIC_ID_ALL;
715 else if (madt_find_cpu(nmi->ProcessorId, &apic_id) != 0) {
716 if (bootverbose)
717 printf("MADT: Ignoring local NMI routed to ACPI CPU %u\n",
718 nmi->ProcessorId);
719 return;
720 }
721 if (nmi->Lint == 0)
722 pin = LVT_LINT0;
723 else
724 pin = LVT_LINT1;
725 lapic_set_lvt_mode(apic_id, pin, APIC_LVT_DM_NMI);
726 if (nmi->TriggerMode != TRIGGER_CONFORMS)
727 lapic_set_lvt_triggermode(apic_id, pin,
728 interrupt_trigger(nmi->TriggerMode, 0));
729 if (nmi->Polarity != POLARITY_CONFORMS)
730 lapic_set_lvt_polarity(apic_id, pin,
731 interrupt_polarity(nmi->Polarity, 0));
732 }
733
734 /*
735 * Parse interrupt entries.
736 */
737 static void
738 madt_parse_ints(APIC_HEADER *entry, void *arg __unused)
739 {
740
741 switch (entry->Type) {
742 case APIC_XRUPT_OVERRIDE:
743 madt_parse_interrupt_override(
744 (MADT_INTERRUPT_OVERRIDE *)entry);
745 break;
746 case APIC_NMI:
747 madt_parse_nmi((MADT_NMI_SOURCE *)entry);
748 break;
749 case APIC_LOCAL_NMI:
750 madt_parse_local_nmi((MADT_LOCAL_APIC_NMI *)entry);
751 break;
752 }
753 }
754
755 /*
756 * Setup per-CPU ACPI IDs.
757 */
758 static void
759 madt_set_ids(void *dummy)
760 {
761 struct lapic_info *la;
762 struct pcpu *pc;
763 u_int i;
764
765 if (madt == NULL)
766 return;
767 for (i = 0; i <= mp_maxid; i++) {
768 if (CPU_ABSENT(i))
769 continue;
770 pc = pcpu_find(i);
771 KASSERT(pc != NULL, ("no pcpu data for CPU %d", i));
772 la = &lapics[pc->pc_apic_id];
773 if (!la->la_enabled)
774 panic("APIC: CPU with APIC ID %u is not enabled",
775 pc->pc_apic_id);
776 pc->pc_acpi_id = la->la_acpi_id;
777 if (bootverbose)
778 printf("APIC: CPU %u has ACPI ID %u\n", i,
779 la->la_acpi_id);
780 }
781 }
782 SYSINIT(madt_set_ids, SI_SUB_CPU, SI_ORDER_ANY, madt_set_ids, NULL)
Cache object: 9d4249ae2dde94726d0e45b1d3f0cdd4
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