madt.c revision 142257
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: head/sys/i386/acpica/madt.c 142257 2005-02-22 21:52:52Z jhb $"); 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 59typedef void madt_entry_handler(APIC_HEADER *entry, void *arg); 60 61/* These two arrays are indexed by APIC IDs. */ 62struct ioapic_info { 63 void *io_apic; 64 UINT32 io_vector; 65} ioapics[NIOAPICS]; 66 67struct lapic_info { 68 u_int la_enabled:1; 69 u_int la_acpi_id:8; 70} lapics[NLAPICS]; 71 72static int madt_found_sci_override; 73static MULTIPLE_APIC_TABLE *madt; 74static vm_paddr_t madt_physaddr; 75static vm_offset_t madt_length; 76 77MALLOC_DEFINE(M_MADT, "MADT Table", "ACPI MADT Table Items"); 78 79static enum intr_polarity interrupt_polarity(UINT16 Polarity, UINT8 Source); 80static enum intr_trigger interrupt_trigger(UINT16 TriggerMode, UINT8 Source); 81static int madt_find_cpu(u_int acpi_id, u_int *apic_id); 82static int madt_find_interrupt(int intr, void **apic, u_int *pin); 83static void *madt_map(vm_paddr_t pa, int offset, vm_offset_t length); 84static void *madt_map_table(vm_paddr_t pa, int offset, const char *sig); 85static void madt_parse_apics(APIC_HEADER *entry, void *arg); 86static void madt_parse_interrupt_override(MADT_INTERRUPT_OVERRIDE *intr); 87static void madt_parse_ints(APIC_HEADER *entry, void *arg __unused); 88static void madt_parse_local_nmi(MADT_LOCAL_APIC_NMI *nmi); 89static void madt_parse_nmi(MADT_NMI_SOURCE *nmi); 90static int madt_probe(void); 91static int madt_probe_cpus(void); 92static void madt_probe_cpus_handler(APIC_HEADER *entry, void *arg __unused); 93static int madt_probe_table(vm_paddr_t address); 94static void madt_register(void *dummy); 95static int madt_setup_local(void); 96static int madt_setup_io(void); 97static void madt_unmap(void *data, vm_offset_t length); 98static void madt_unmap_table(void *table); 99static void madt_walk_table(madt_entry_handler *handler, void *arg); 100 101static 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 */ 116static void * 117madt_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 139static void 140madt_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 156static void * 157madt_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 180static void 181madt_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 */ 192static int 193madt_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 */ 289static int 290madt_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 */ 318static int 319madt_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 */ 333static int 334madt_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 */ 353static int 354madt_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 405static void 406madt_register(void *dummy __unused) 407{ 408 409 apic_register_enumerator(&madt_enumerator); 410} 411SYSINIT(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 */ 416static void 417madt_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 430static void 431madt_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 */ 467static void 468madt_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 */ 501static enum intr_polarity 502interrupt_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 520static enum intr_trigger 521interrupt_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 */ 542static int 543madt_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 */ 562static int 563madt_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 */ 589static void 590madt_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 */ 684static void 685madt_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 */ 708static void 709madt_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 */ 737static void 738madt_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 */ 758static void 759madt_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} 782SYSINIT(madt_set_ids, SI_SUB_CPU, SI_ORDER_ANY, madt_set_ids, NULL) 783