1/*- 2 * Copyright (c) 2003 John Baldwin <jhb@FreeBSD.org> 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 16 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 23 * SUCH DAMAGE. 24 */ 25 26#include <sys/cdefs.h> 27__FBSDID("$FreeBSD: stable/11/sys/x86/acpica/madt.c 367457 2020-11-07 18:10:59Z dim $"); 28 29#include <sys/param.h> 30#include <sys/systm.h> 31#include <sys/bus.h> 32#include <sys/kernel.h> 33#include <sys/limits.h> 34#include <sys/malloc.h> 35#include <sys/smp.h> 36#include <vm/vm.h> 37#include <vm/pmap.h> 38 39#include <x86/apicreg.h> 40#include <machine/intr_machdep.h> 41#include <x86/apicvar.h> 42#include <machine/md_var.h> 43#include <x86/vmware.h> 44 45#include <contrib/dev/acpica/include/acpi.h> 46#include <contrib/dev/acpica/include/aclocal.h> 47#include <contrib/dev/acpica/include/actables.h> 48 49#include <dev/acpica/acpivar.h> 50#include <dev/pci/pcivar.h> 51 52/* These two arrays are indexed by APIC IDs. */ 53static struct { 54 void *io_apic; 55 UINT32 io_vector; 56} *ioapics; 57 58static struct lapic_info { 59 u_int la_enabled; 60 u_int la_acpi_id; 61} lapics[MAX_APIC_ID + 1]; 62 63int madt_found_sci_override; 64static ACPI_TABLE_MADT *madt; 65static vm_paddr_t madt_physaddr; 66static vm_offset_t madt_length; 67 68static MALLOC_DEFINE(M_MADT, "madt_table", "ACPI MADT Table Items"); 69 70static enum intr_polarity interrupt_polarity(UINT16 IntiFlags, UINT8 Source); 71static enum intr_trigger interrupt_trigger(UINT16 IntiFlags, UINT8 Source); 72static int madt_find_cpu(u_int acpi_id, u_int *apic_id); 73static int madt_find_interrupt(int intr, void **apic, u_int *pin); 74static void madt_parse_apics(ACPI_SUBTABLE_HEADER *entry, void *arg); 75static void madt_parse_interrupt_override( 76 ACPI_MADT_INTERRUPT_OVERRIDE *intr); 77static void madt_parse_ints(ACPI_SUBTABLE_HEADER *entry, 78 void *arg __unused); 79static void madt_parse_local_nmi(ACPI_MADT_LOCAL_APIC_NMI *nmi); 80static void madt_parse_nmi(ACPI_MADT_NMI_SOURCE *nmi); 81static int madt_probe(void); 82static int madt_probe_cpus(void); 83static void madt_probe_cpus_handler(ACPI_SUBTABLE_HEADER *entry, 84 void *arg __unused); 85static void madt_register(void *dummy); 86static int madt_setup_local(void); 87static int madt_setup_io(void); 88static void madt_walk_table(acpi_subtable_handler *handler, void *arg); 89 90static struct apic_enumerator madt_enumerator = { 91 "MADT", 92 madt_probe, 93 madt_probe_cpus, 94 madt_setup_local, 95 madt_setup_io 96}; 97 98/* 99 * Look for an ACPI Multiple APIC Description Table ("APIC") 100 */ 101static int 102madt_probe(void) 103{ 104 105 madt_physaddr = acpi_find_table(ACPI_SIG_MADT); 106 if (madt_physaddr == 0) 107 return (ENXIO); 108 return (-50); 109} 110 111/* 112 * Run through the MP table enumerating CPUs. 113 */ 114static int 115madt_probe_cpus(void) 116{ 117 118 madt = acpi_map_table(madt_physaddr, ACPI_SIG_MADT); 119 madt_length = madt->Header.Length; 120 KASSERT(madt != NULL, ("Unable to re-map MADT")); 121 madt_walk_table(madt_probe_cpus_handler, NULL); 122 acpi_unmap_table(madt); 123 madt = NULL; 124 return (0); 125} 126 127/* 128 * Initialize the local APIC on the BSP. 129 */ 130static int 131madt_setup_local(void) 132{ 133 ACPI_TABLE_DMAR *dmartbl; 134 vm_paddr_t dmartbl_physaddr; 135 const char *reason; 136 char *hw_vendor; 137 u_int p[4]; 138 int user_x2apic; 139 bool bios_x2apic; 140 141 madt = pmap_mapbios(madt_physaddr, madt_length); 142 if ((cpu_feature2 & CPUID2_X2APIC) != 0) { 143 reason = NULL; 144 145 /* 146 * Automatically detect several configurations where 147 * x2APIC mode is known to cause troubles. User can 148 * override the setting with hw.x2apic_enable tunable. 149 */ 150 dmartbl_physaddr = acpi_find_table(ACPI_SIG_DMAR); 151 if (dmartbl_physaddr != 0) { 152 dmartbl = acpi_map_table(dmartbl_physaddr, 153 ACPI_SIG_DMAR); 154 if ((dmartbl->Flags & ACPI_DMAR_X2APIC_OPT_OUT) != 0) 155 reason = "by DMAR table"; 156 acpi_unmap_table(dmartbl); 157 } 158 if (vm_guest == VM_GUEST_VMWARE) { 159 vmware_hvcall(VMW_HVCMD_GETVCPU_INFO, p); 160 if ((p[0] & VMW_VCPUINFO_VCPU_RESERVED) != 0 || 161 (p[0] & VMW_VCPUINFO_LEGACY_X2APIC) == 0) 162 reason = 163 "inside VMWare without intr redirection"; 164 } else if (vm_guest == VM_GUEST_XEN) { 165 reason = "due to running under XEN"; 166 } else if (vm_guest == VM_GUEST_NO && 167 CPUID_TO_FAMILY(cpu_id) == 0x6 && 168 CPUID_TO_MODEL(cpu_id) == 0x2a) { 169 hw_vendor = kern_getenv("smbios.planar.maker"); 170 /* 171 * It seems that some Lenovo and ASUS 172 * SandyBridge-based notebook BIOSes have a 173 * bug which prevents booting AP in x2APIC 174 * mode. Since the only way to detect mobile 175 * CPU is to check northbridge pci id, which 176 * cannot be done that early, disable x2APIC 177 * for all Lenovo and ASUS SandyBridge 178 * machines. 179 */ 180 if (hw_vendor != NULL) { 181 if (!strcmp(hw_vendor, "LENOVO") || 182 !strcmp(hw_vendor, 183 "ASUSTeK Computer Inc.")) { 184 reason = 185 "for a suspected SandyBridge BIOS bug"; 186 } 187 freeenv(hw_vendor); 188 } 189 } 190 bios_x2apic = lapic_is_x2apic(); 191 if (reason != NULL && bios_x2apic) { 192 if (bootverbose) 193 printf("x2APIC should be disabled %s but " 194 "already enabled by BIOS; enabling.\n", 195 reason); 196 reason = NULL; 197 } 198 if (reason == NULL) 199 x2apic_mode = 1; 200 else if (bootverbose) 201 printf("x2APIC available but disabled %s\n", reason); 202 user_x2apic = x2apic_mode; 203 TUNABLE_INT_FETCH("hw.x2apic_enable", &user_x2apic); 204 if (user_x2apic != x2apic_mode) { 205 if (bios_x2apic && !user_x2apic) 206 printf("x2APIC disabled by tunable and " 207 "enabled by BIOS; ignoring tunable."); 208 else 209 x2apic_mode = user_x2apic; 210 } 211 } 212 213 lapic_init(madt->Address); 214 printf("ACPI APIC Table: <%.*s %.*s>\n", 215 (int)sizeof(madt->Header.OemId), madt->Header.OemId, 216 (int)sizeof(madt->Header.OemTableId), madt->Header.OemTableId); 217 218 /* 219 * We ignore 64-bit local APIC override entries. Should we 220 * perhaps emit a warning here if we find one? 221 */ 222 return (0); 223} 224 225/* 226 * Enumerate I/O APICs and setup interrupt sources. 227 */ 228static int 229madt_setup_io(void) 230{ 231 void *ioapic; 232 u_int pin; 233 int i; 234 235 /* Try to initialize ACPI so that we can access the FADT. */ 236 i = acpi_Startup(); 237 if (ACPI_FAILURE(i)) { 238 printf("MADT: ACPI Startup failed with %s\n", 239 AcpiFormatException(i)); 240 printf("Try disabling either ACPI or apic support.\n"); 241 panic("Using MADT but ACPI doesn't work"); 242 } 243 244 ioapics = malloc(sizeof(*ioapics) * (MAX_APIC_ID + 1), M_MADT, 245 M_WAITOK | M_ZERO); 246 247 /* First, we run through adding I/O APIC's. */ 248 madt_walk_table(madt_parse_apics, NULL); 249 250 /* Second, we run through the table tweaking interrupt sources. */ 251 madt_walk_table(madt_parse_ints, NULL); 252 253 /* 254 * If there was not an explicit override entry for the SCI, 255 * force it to use level trigger and active-low polarity. 256 */ 257 if (!madt_found_sci_override) { 258 if (madt_find_interrupt(AcpiGbl_FADT.SciInterrupt, &ioapic, 259 &pin) != 0) 260 printf("MADT: Could not find APIC for SCI IRQ %u\n", 261 AcpiGbl_FADT.SciInterrupt); 262 else { 263 printf( 264 "MADT: Forcing active-low polarity and level trigger for SCI\n"); 265 ioapic_set_polarity(ioapic, pin, INTR_POLARITY_LOW); 266 ioapic_set_triggermode(ioapic, pin, INTR_TRIGGER_LEVEL); 267 } 268 } 269 270 /* Third, we register all the I/O APIC's. */ 271 for (i = 0; i <= MAX_APIC_ID; i++) 272 if (ioapics[i].io_apic != NULL) 273 ioapic_register(ioapics[i].io_apic); 274 275 /* Finally, we throw the switch to enable the I/O APIC's. */ 276 acpi_SetDefaultIntrModel(ACPI_INTR_APIC); 277 278 free(ioapics, M_MADT); 279 ioapics = NULL; 280 281 return (0); 282} 283 284static void 285madt_register(void *dummy __unused) 286{ 287 288 apic_register_enumerator(&madt_enumerator); 289} 290SYSINIT(madt_register, SI_SUB_TUNABLES - 1, SI_ORDER_FIRST, madt_register, NULL); 291 292/* 293 * Call the handler routine for each entry in the MADT table. 294 */ 295static void 296madt_walk_table(acpi_subtable_handler *handler, void *arg) 297{ 298 299 acpi_walk_subtables(madt + 1, (char *)madt + madt->Header.Length, 300 handler, arg); 301} 302 303static void 304madt_add_cpu(u_int acpi_id, u_int apic_id, u_int flags) 305{ 306 struct lapic_info *la; 307 308 /* 309 * The MADT does not include a BSP flag, so we have to let the 310 * MP code figure out which CPU is the BSP on its own. 311 */ 312 if (bootverbose) 313 printf("MADT: Found CPU APIC ID %u ACPI ID %u: %s\n", 314 apic_id, acpi_id, flags & ACPI_MADT_ENABLED ? 315 "enabled" : "disabled"); 316 if (!(flags & ACPI_MADT_ENABLED)) 317 return; 318 if (apic_id > MAX_APIC_ID) { 319 printf("MADT: Ignoring local APIC ID %u (too high)\n", 320 apic_id); 321 return; 322 } 323 324 la = &lapics[apic_id]; 325 KASSERT(la->la_enabled == 0, ("Duplicate local APIC ID %u", apic_id)); 326 la->la_enabled = 1; 327 la->la_acpi_id = acpi_id; 328 lapic_create(apic_id, 0); 329} 330 331static void 332madt_probe_cpus_handler(ACPI_SUBTABLE_HEADER *entry, void *arg) 333{ 334 ACPI_MADT_LOCAL_APIC *proc; 335 ACPI_MADT_LOCAL_X2APIC *x2apic; 336 337 switch (entry->Type) { 338 case ACPI_MADT_TYPE_LOCAL_APIC: 339 proc = (ACPI_MADT_LOCAL_APIC *)entry; 340 madt_add_cpu(proc->ProcessorId, proc->Id, proc->LapicFlags); 341 break; 342 case ACPI_MADT_TYPE_LOCAL_X2APIC: 343 x2apic = (ACPI_MADT_LOCAL_X2APIC *)entry; 344 madt_add_cpu(x2apic->Uid, x2apic->LocalApicId, 345 x2apic->LapicFlags); 346 break; 347 } 348} 349 350 351/* 352 * Add an I/O APIC from an entry in the table. 353 */ 354static void 355madt_parse_apics(ACPI_SUBTABLE_HEADER *entry, void *arg __unused) 356{ 357 ACPI_MADT_IO_APIC *apic; 358 359 switch (entry->Type) { 360 case ACPI_MADT_TYPE_IO_APIC: 361 apic = (ACPI_MADT_IO_APIC *)entry; 362 if (bootverbose) 363 printf( 364 "MADT: Found IO APIC ID %u, Interrupt %u at %p\n", 365 apic->Id, apic->GlobalIrqBase, 366 (void *)(uintptr_t)apic->Address); 367 if (apic->Id > MAX_APIC_ID) 368 panic("%s: I/O APIC ID %u too high", __func__, 369 apic->Id); 370 if (ioapics[apic->Id].io_apic != NULL) 371 panic("%s: Double APIC ID %u", __func__, apic->Id); 372 ioapics[apic->Id].io_apic = ioapic_create(apic->Address, 373 apic->Id, apic->GlobalIrqBase); 374 ioapics[apic->Id].io_vector = apic->GlobalIrqBase; 375 break; 376 default: 377 break; 378 } 379} 380 381/* 382 * Determine properties of an interrupt source. Note that for ACPI these 383 * functions are only used for ISA interrupts, so we assume ISA bus values 384 * (Active Hi, Edge Triggered) for conforming values except for the ACPI 385 * SCI for which we use Active Lo, Level Triggered. 386 */ 387static enum intr_polarity 388interrupt_polarity(UINT16 IntiFlags, UINT8 Source) 389{ 390 391 switch (IntiFlags & ACPI_MADT_POLARITY_MASK) { 392 default: 393 printf("WARNING: Bogus Interrupt Polarity. Assume CONFORMS\n"); 394 /* FALLTHROUGH*/ 395 case ACPI_MADT_POLARITY_CONFORMS: 396 if (Source == AcpiGbl_FADT.SciInterrupt) 397 return (INTR_POLARITY_LOW); 398 else 399 return (INTR_POLARITY_HIGH); 400 case ACPI_MADT_POLARITY_ACTIVE_HIGH: 401 return (INTR_POLARITY_HIGH); 402 case ACPI_MADT_POLARITY_ACTIVE_LOW: 403 return (INTR_POLARITY_LOW); 404 } 405} 406 407static enum intr_trigger 408interrupt_trigger(UINT16 IntiFlags, UINT8 Source) 409{ 410 411 switch (IntiFlags & ACPI_MADT_TRIGGER_MASK) { 412 default: 413 printf("WARNING: Bogus Interrupt Trigger Mode. Assume CONFORMS.\n"); 414 /*FALLTHROUGH*/ 415 case ACPI_MADT_TRIGGER_CONFORMS: 416 if (Source == AcpiGbl_FADT.SciInterrupt) 417 return (INTR_TRIGGER_LEVEL); 418 else 419 return (INTR_TRIGGER_EDGE); 420 case ACPI_MADT_TRIGGER_EDGE: 421 return (INTR_TRIGGER_EDGE); 422 case ACPI_MADT_TRIGGER_LEVEL: 423 return (INTR_TRIGGER_LEVEL); 424 } 425} 426 427/* 428 * Find the local APIC ID associated with a given ACPI Processor ID. 429 */ 430static int 431madt_find_cpu(u_int acpi_id, u_int *apic_id) 432{ 433 int i; 434 435 for (i = 0; i <= MAX_APIC_ID; i++) { 436 if (!lapics[i].la_enabled) 437 continue; 438 if (lapics[i].la_acpi_id != acpi_id) 439 continue; 440 *apic_id = i; 441 return (0); 442 } 443 return (ENOENT); 444} 445 446/* 447 * Find the IO APIC and pin on that APIC associated with a given global 448 * interrupt. 449 */ 450static int 451madt_find_interrupt(int intr, void **apic, u_int *pin) 452{ 453 int i, best; 454 455 best = -1; 456 for (i = 0; i <= MAX_APIC_ID; i++) { 457 if (ioapics[i].io_apic == NULL || 458 ioapics[i].io_vector > intr) 459 continue; 460 if (best == -1 || 461 ioapics[best].io_vector < ioapics[i].io_vector) 462 best = i; 463 } 464 if (best == -1) 465 return (ENOENT); 466 *apic = ioapics[best].io_apic; 467 *pin = intr - ioapics[best].io_vector; 468 if (*pin > 32) 469 printf("WARNING: Found intpin of %u for vector %d\n", *pin, 470 intr); 471 return (0); 472} 473 474void 475madt_parse_interrupt_values(void *entry, 476 enum intr_trigger *trig, enum intr_polarity *pol) 477{ 478 ACPI_MADT_INTERRUPT_OVERRIDE *intr; 479 char buf[64]; 480 481 intr = entry; 482 483 if (bootverbose) 484 printf("MADT: Interrupt override: source %u, irq %u\n", 485 intr->SourceIrq, intr->GlobalIrq); 486 KASSERT(intr->Bus == 0, ("bus for interrupt overrides must be zero")); 487 488 /* 489 * Lookup the appropriate trigger and polarity modes for this 490 * entry. 491 */ 492 *trig = interrupt_trigger(intr->IntiFlags, intr->SourceIrq); 493 *pol = interrupt_polarity(intr->IntiFlags, intr->SourceIrq); 494 495 /* 496 * If the SCI is identity mapped but has edge trigger and 497 * active-hi polarity or the force_sci_lo tunable is set, 498 * force it to use level/lo. 499 */ 500 if (intr->SourceIrq == AcpiGbl_FADT.SciInterrupt) { 501 madt_found_sci_override = 1; 502 if (getenv_string("hw.acpi.sci.trigger", buf, sizeof(buf))) { 503 if (tolower(buf[0]) == 'e') 504 *trig = INTR_TRIGGER_EDGE; 505 else if (tolower(buf[0]) == 'l') 506 *trig = INTR_TRIGGER_LEVEL; 507 else 508 panic( 509 "Invalid trigger %s: must be 'edge' or 'level'", 510 buf); 511 printf("MADT: Forcing SCI to %s trigger\n", 512 *trig == INTR_TRIGGER_EDGE ? "edge" : "level"); 513 } 514 if (getenv_string("hw.acpi.sci.polarity", buf, sizeof(buf))) { 515 if (tolower(buf[0]) == 'h') 516 *pol = INTR_POLARITY_HIGH; 517 else if (tolower(buf[0]) == 'l') 518 *pol = INTR_POLARITY_LOW; 519 else 520 panic( 521 "Invalid polarity %s: must be 'high' or 'low'", 522 buf); 523 printf("MADT: Forcing SCI to active %s polarity\n", 524 *pol == INTR_POLARITY_HIGH ? "high" : "low"); 525 } 526 } 527} 528 529/* 530 * Parse an interrupt source override for an ISA interrupt. 531 */ 532static void 533madt_parse_interrupt_override(ACPI_MADT_INTERRUPT_OVERRIDE *intr) 534{ 535 void *new_ioapic, *old_ioapic; 536 u_int new_pin, old_pin; 537 enum intr_trigger trig; 538 enum intr_polarity pol; 539 540 if (acpi_quirks & ACPI_Q_MADT_IRQ0 && intr->SourceIrq == 0 && 541 intr->GlobalIrq == 2) { 542 if (bootverbose) 543 printf("MADT: Skipping timer override\n"); 544 return; 545 } 546 547 if (madt_find_interrupt(intr->GlobalIrq, &new_ioapic, &new_pin) != 0) { 548 printf("MADT: Could not find APIC for vector %u (IRQ %u)\n", 549 intr->GlobalIrq, intr->SourceIrq); 550 return; 551 } 552 553 madt_parse_interrupt_values(intr, &trig, &pol); 554 555 /* Remap the IRQ if it is mapped to a different interrupt vector. */ 556 if (intr->SourceIrq != intr->GlobalIrq) { 557 /* 558 * If the SCI is remapped to a non-ISA global interrupt, 559 * then override the vector we use to setup and allocate 560 * the interrupt. 561 */ 562 if (intr->GlobalIrq > 15 && 563 intr->SourceIrq == AcpiGbl_FADT.SciInterrupt) 564 acpi_OverrideInterruptLevel(intr->GlobalIrq); 565 else 566 ioapic_remap_vector(new_ioapic, new_pin, 567 intr->SourceIrq); 568 if (madt_find_interrupt(intr->SourceIrq, &old_ioapic, 569 &old_pin) != 0) 570 printf("MADT: Could not find APIC for source IRQ %u\n", 571 intr->SourceIrq); 572 else if (ioapic_get_vector(old_ioapic, old_pin) == 573 intr->SourceIrq) 574 ioapic_disable_pin(old_ioapic, old_pin); 575 } 576 577 /* Program the polarity and trigger mode. */ 578 ioapic_set_triggermode(new_ioapic, new_pin, trig); 579 ioapic_set_polarity(new_ioapic, new_pin, pol); 580} 581 582/* 583 * Parse an entry for an NMI routed to an IO APIC. 584 */ 585static void 586madt_parse_nmi(ACPI_MADT_NMI_SOURCE *nmi) 587{ 588 void *ioapic; 589 u_int pin; 590 591 if (madt_find_interrupt(nmi->GlobalIrq, &ioapic, &pin) != 0) { 592 printf("MADT: Could not find APIC for vector %u\n", 593 nmi->GlobalIrq); 594 return; 595 } 596 597 ioapic_set_nmi(ioapic, pin); 598 if (!(nmi->IntiFlags & ACPI_MADT_TRIGGER_CONFORMS)) 599 ioapic_set_triggermode(ioapic, pin, 600 interrupt_trigger(nmi->IntiFlags, 0)); 601 if (!(nmi->IntiFlags & ACPI_MADT_POLARITY_CONFORMS)) 602 ioapic_set_polarity(ioapic, pin, 603 interrupt_polarity(nmi->IntiFlags, 0)); 604} 605 606/* 607 * Parse an entry for an NMI routed to a local APIC LVT pin. 608 */ 609static void 610madt_handle_local_nmi(u_int acpi_id, UINT8 Lint, UINT16 IntiFlags) 611{ 612 u_int apic_id, pin; 613 614 if (acpi_id == 0xffffffff) 615 apic_id = APIC_ID_ALL; 616 else if (madt_find_cpu(acpi_id, &apic_id) != 0) { 617 if (bootverbose) 618 printf("MADT: Ignoring local NMI routed to " 619 "ACPI CPU %u\n", acpi_id); 620 return; 621 } 622 if (Lint == 0) 623 pin = APIC_LVT_LINT0; 624 else 625 pin = APIC_LVT_LINT1; 626 lapic_set_lvt_mode(apic_id, pin, APIC_LVT_DM_NMI); 627 if (!(IntiFlags & ACPI_MADT_TRIGGER_CONFORMS)) 628 lapic_set_lvt_triggermode(apic_id, pin, 629 interrupt_trigger(IntiFlags, 0)); 630 if (!(IntiFlags & ACPI_MADT_POLARITY_CONFORMS)) 631 lapic_set_lvt_polarity(apic_id, pin, 632 interrupt_polarity(IntiFlags, 0)); 633} 634 635static void 636madt_parse_local_nmi(ACPI_MADT_LOCAL_APIC_NMI *nmi) 637{ 638 639 madt_handle_local_nmi(nmi->ProcessorId == 0xff ? 0xffffffff : 640 nmi->ProcessorId, nmi->Lint, nmi->IntiFlags); 641} 642 643static void 644madt_parse_local_x2apic_nmi(ACPI_MADT_LOCAL_X2APIC_NMI *nmi) 645{ 646 647 madt_handle_local_nmi(nmi->Uid, nmi->Lint, nmi->IntiFlags); 648} 649 650/* 651 * Parse interrupt entries. 652 */ 653static void 654madt_parse_ints(ACPI_SUBTABLE_HEADER *entry, void *arg __unused) 655{ 656 657 switch (entry->Type) { 658 case ACPI_MADT_TYPE_INTERRUPT_OVERRIDE: 659 madt_parse_interrupt_override( 660 (ACPI_MADT_INTERRUPT_OVERRIDE *)entry); 661 break; 662 case ACPI_MADT_TYPE_NMI_SOURCE: 663 madt_parse_nmi((ACPI_MADT_NMI_SOURCE *)entry); 664 break; 665 case ACPI_MADT_TYPE_LOCAL_APIC_NMI: 666 madt_parse_local_nmi((ACPI_MADT_LOCAL_APIC_NMI *)entry); 667 break; 668 case ACPI_MADT_TYPE_LOCAL_X2APIC_NMI: 669 madt_parse_local_x2apic_nmi( 670 (ACPI_MADT_LOCAL_X2APIC_NMI *)entry); 671 break; 672 } 673} 674 675/* 676 * Setup per-CPU ACPI IDs. 677 */ 678static void 679madt_set_ids(void *dummy) 680{ 681 struct lapic_info *la; 682 struct pcpu *pc; 683 u_int i; 684 685 if (madt == NULL) 686 return; 687 CPU_FOREACH(i) { 688 pc = pcpu_find(i); 689 KASSERT(pc != NULL, ("no pcpu data for CPU %u", i)); 690 la = &lapics[pc->pc_apic_id]; 691 if (!la->la_enabled) 692 panic("APIC: CPU with APIC ID %u is not enabled", 693 pc->pc_apic_id); 694 pc->pc_acpi_id = la->la_acpi_id; 695 if (bootverbose) 696 printf("APIC: CPU %u has ACPI ID %u\n", i, 697 la->la_acpi_id); 698 } 699} 700SYSINIT(madt_set_ids, SI_SUB_CPU, SI_ORDER_MIDDLE, madt_set_ids, NULL); 701