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