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 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 */ 228 static int 229 madt_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 } 283 284 static void 285 madt_register(void *dummy __unused) 286 { 287 288 apic_register_enumerator(&madt_enumerator); 289 } 290 SYSINIT(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 */ 295 static void 296 madt_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 } 302 303 static void 304 madt_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 } 330 331 static void 332 madt_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 */ 354 static void 355 madt_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 if (apic->GlobalIrqBase >= FIRST_MSI_INT) { 373 printf("MADT: Ignoring bogus I/O APIC ID %u", apic->Id); 374 break; 375 } 376 ioapics[apic->Id].io_apic = ioapic_create(apic->Address, 377 apic->Id, apic->GlobalIrqBase); 378 ioapics[apic->Id].io_vector = apic->GlobalIrqBase; 379 break; 380 default: 381 break; 382 } 383 } 384 385 /* 386 * Determine properties of an interrupt source. Note that for ACPI these 387 * functions are only used for ISA interrupts, so we assume ISA bus values 388 * (Active Hi, Edge Triggered) for conforming values except for the ACPI 389 * SCI for which we use Active Lo, Level Triggered. 390 */ 391 static enum intr_polarity 392 interrupt_polarity(UINT16 IntiFlags, UINT8 Source) 393 { 394 395 switch (IntiFlags & ACPI_MADT_POLARITY_MASK) { 396 default: 397 printf("WARNING: Bogus Interrupt Polarity. Assume CONFORMS\n"); 398 /* FALLTHROUGH*/ 399 case ACPI_MADT_POLARITY_CONFORMS: 400 if (Source == AcpiGbl_FADT.SciInterrupt) 401 return (INTR_POLARITY_LOW); 402 else 403 return (INTR_POLARITY_HIGH); 404 case ACPI_MADT_POLARITY_ACTIVE_HIGH: 405 return (INTR_POLARITY_HIGH); 406 case ACPI_MADT_POLARITY_ACTIVE_LOW: 407 return (INTR_POLARITY_LOW); 408 } 409 } 410 411 static enum intr_trigger 412 interrupt_trigger(UINT16 IntiFlags, UINT8 Source) 413 { 414 415 switch (IntiFlags & ACPI_MADT_TRIGGER_MASK) { 416 default: 417 printf("WARNING: Bogus Interrupt Trigger Mode. Assume CONFORMS.\n"); 418 /*FALLTHROUGH*/ 419 case ACPI_MADT_TRIGGER_CONFORMS: 420 if (Source == AcpiGbl_FADT.SciInterrupt) 421 return (INTR_TRIGGER_LEVEL); 422 else 423 return (INTR_TRIGGER_EDGE); 424 case ACPI_MADT_TRIGGER_EDGE: 425 return (INTR_TRIGGER_EDGE); 426 case ACPI_MADT_TRIGGER_LEVEL: 427 return (INTR_TRIGGER_LEVEL); 428 } 429 } 430 431 /* 432 * Find the local APIC ID associated with a given ACPI Processor ID. 433 */ 434 static int 435 madt_find_cpu(u_int acpi_id, u_int *apic_id) 436 { 437 int i; 438 439 for (i = 0; i <= MAX_APIC_ID; i++) { 440 if (!lapics[i].la_enabled) 441 continue; 442 if (lapics[i].la_acpi_id != acpi_id) 443 continue; 444 *apic_id = i; 445 return (0); 446 } 447 return (ENOENT); 448 } 449 450 /* 451 * Find the IO APIC and pin on that APIC associated with a given global 452 * interrupt. 453 */ 454 static int 455 madt_find_interrupt(int intr, void **apic, u_int *pin) 456 { 457 int i, best; 458 459 best = -1; 460 for (i = 0; i <= MAX_APIC_ID; i++) { 461 if (ioapics[i].io_apic == NULL || 462 ioapics[i].io_vector > intr) 463 continue; 464 if (best == -1 || 465 ioapics[best].io_vector < ioapics[i].io_vector) 466 best = i; 467 } 468 if (best == -1) 469 return (ENOENT); 470 *apic = ioapics[best].io_apic; 471 *pin = intr - ioapics[best].io_vector; 472 if (*pin > 32) 473 printf("WARNING: Found intpin of %u for vector %d\n", *pin, 474 intr); 475 return (0); 476 } 477 478 void 479 madt_parse_interrupt_values(void *entry, 480 enum intr_trigger *trig, enum intr_polarity *pol) 481 { 482 ACPI_MADT_INTERRUPT_OVERRIDE *intr; 483 char buf[64]; 484 485 intr = entry; 486 487 if (bootverbose) 488 printf("MADT: Interrupt override: source %u, irq %u\n", 489 intr->SourceIrq, intr->GlobalIrq); 490 KASSERT(intr->Bus == 0, ("bus for interrupt overrides must be zero")); 491 492 /* 493 * Lookup the appropriate trigger and polarity modes for this 494 * entry. 495 */ 496 *trig = interrupt_trigger(intr->IntiFlags, intr->SourceIrq); 497 *pol = interrupt_polarity(intr->IntiFlags, intr->SourceIrq); 498 499 /* 500 * If the SCI is identity mapped but has edge trigger and 501 * active-hi polarity or the force_sci_lo tunable is set, 502 * force it to use level/lo. 503 */ 504 if (intr->SourceIrq == AcpiGbl_FADT.SciInterrupt) { 505 madt_found_sci_override = 1; 506 if (getenv_string("hw.acpi.sci.trigger", buf, sizeof(buf))) { 507 if (tolower(buf[0]) == 'e') 508 *trig = INTR_TRIGGER_EDGE; 509 else if (tolower(buf[0]) == 'l') 510 *trig = INTR_TRIGGER_LEVEL; 511 else 512 panic( 513 "Invalid trigger %s: must be 'edge' or 'level'", 514 buf); 515 printf("MADT: Forcing SCI to %s trigger\n", 516 *trig == INTR_TRIGGER_EDGE ? "edge" : "level"); 517 } 518 if (getenv_string("hw.acpi.sci.polarity", buf, sizeof(buf))) { 519 if (tolower(buf[0]) == 'h') 520 *pol = INTR_POLARITY_HIGH; 521 else if (tolower(buf[0]) == 'l') 522 *pol = INTR_POLARITY_LOW; 523 else 524 panic( 525 "Invalid polarity %s: must be 'high' or 'low'", 526 buf); 527 printf("MADT: Forcing SCI to active %s polarity\n", 528 *pol == INTR_POLARITY_HIGH ? "high" : "low"); 529 } 530 } 531 } 532 533 /* 534 * Parse an interrupt source override for an ISA interrupt. 535 */ 536 static void 537 madt_parse_interrupt_override(ACPI_MADT_INTERRUPT_OVERRIDE *intr) 538 { 539 void *new_ioapic, *old_ioapic; 540 u_int new_pin, old_pin; 541 enum intr_trigger trig; 542 enum intr_polarity pol; 543 544 if (acpi_quirks & ACPI_Q_MADT_IRQ0 && intr->SourceIrq == 0 && 545 intr->GlobalIrq == 2) { 546 if (bootverbose) 547 printf("MADT: Skipping timer override\n"); 548 return; 549 } 550 551 if (madt_find_interrupt(intr->GlobalIrq, &new_ioapic, &new_pin) != 0) { 552 printf("MADT: Could not find APIC for vector %u (IRQ %u)\n", 553 intr->GlobalIrq, intr->SourceIrq); 554 return; 555 } 556 557 madt_parse_interrupt_values(intr, &trig, &pol); 558 559 /* Remap the IRQ if it is mapped to a different interrupt vector. */ 560 if (intr->SourceIrq != intr->GlobalIrq) { 561 /* 562 * If the SCI is remapped to a non-ISA global interrupt, 563 * then override the vector we use to setup and allocate 564 * the interrupt. 565 */ 566 if (intr->GlobalIrq > 15 && 567 intr->SourceIrq == AcpiGbl_FADT.SciInterrupt) 568 acpi_OverrideInterruptLevel(intr->GlobalIrq); 569 else 570 ioapic_remap_vector(new_ioapic, new_pin, 571 intr->SourceIrq); 572 if (madt_find_interrupt(intr->SourceIrq, &old_ioapic, 573 &old_pin) != 0) 574 printf("MADT: Could not find APIC for source IRQ %u\n", 575 intr->SourceIrq); 576 else if (ioapic_get_vector(old_ioapic, old_pin) == 577 intr->SourceIrq) 578 ioapic_disable_pin(old_ioapic, old_pin); 579 } 580 581 /* Program the polarity and trigger mode. */ 582 ioapic_set_triggermode(new_ioapic, new_pin, trig); 583 ioapic_set_polarity(new_ioapic, new_pin, pol); 584 } 585 586 /* 587 * Parse an entry for an NMI routed to an IO APIC. 588 */ 589 static void 590 madt_parse_nmi(ACPI_MADT_NMI_SOURCE *nmi) 591 { 592 void *ioapic; 593 u_int pin; 594 595 if (madt_find_interrupt(nmi->GlobalIrq, &ioapic, &pin) != 0) { 596 printf("MADT: Could not find APIC for vector %u\n", 597 nmi->GlobalIrq); 598 return; 599 } 600 601 ioapic_set_nmi(ioapic, pin); 602 if (!(nmi->IntiFlags & ACPI_MADT_TRIGGER_CONFORMS)) 603 ioapic_set_triggermode(ioapic, pin, 604 interrupt_trigger(nmi->IntiFlags, 0)); 605 if (!(nmi->IntiFlags & ACPI_MADT_POLARITY_CONFORMS)) 606 ioapic_set_polarity(ioapic, pin, 607 interrupt_polarity(nmi->IntiFlags, 0)); 608 } 609 610 /* 611 * Parse an entry for an NMI routed to a local APIC LVT pin. 612 */ 613 static void 614 madt_handle_local_nmi(u_int acpi_id, UINT8 Lint, UINT16 IntiFlags) 615 { 616 u_int apic_id, pin; 617 618 if (acpi_id == 0xffffffff) 619 apic_id = APIC_ID_ALL; 620 else if (madt_find_cpu(acpi_id, &apic_id) != 0) { 621 if (bootverbose) 622 printf("MADT: Ignoring local NMI routed to " 623 "ACPI CPU %u\n", acpi_id); 624 return; 625 } 626 if (Lint == 0) 627 pin = APIC_LVT_LINT0; 628 else 629 pin = APIC_LVT_LINT1; 630 lapic_set_lvt_mode(apic_id, pin, APIC_LVT_DM_NMI); 631 if (!(IntiFlags & ACPI_MADT_TRIGGER_CONFORMS)) 632 lapic_set_lvt_triggermode(apic_id, pin, 633 interrupt_trigger(IntiFlags, 0)); 634 if (!(IntiFlags & ACPI_MADT_POLARITY_CONFORMS)) 635 lapic_set_lvt_polarity(apic_id, pin, 636 interrupt_polarity(IntiFlags, 0)); 637 } 638 639 static void 640 madt_parse_local_nmi(ACPI_MADT_LOCAL_APIC_NMI *nmi) 641 { 642 643 madt_handle_local_nmi(nmi->ProcessorId == 0xff ? 0xffffffff : 644 nmi->ProcessorId, nmi->Lint, nmi->IntiFlags); 645 } 646 647 static void 648 madt_parse_local_x2apic_nmi(ACPI_MADT_LOCAL_X2APIC_NMI *nmi) 649 { 650 651 madt_handle_local_nmi(nmi->Uid, nmi->Lint, nmi->IntiFlags); 652 } 653 654 /* 655 * Parse interrupt entries. 656 */ 657 static void 658 madt_parse_ints(ACPI_SUBTABLE_HEADER *entry, void *arg __unused) 659 { 660 661 switch (entry->Type) { 662 case ACPI_MADT_TYPE_INTERRUPT_OVERRIDE: 663 madt_parse_interrupt_override( 664 (ACPI_MADT_INTERRUPT_OVERRIDE *)entry); 665 break; 666 case ACPI_MADT_TYPE_NMI_SOURCE: 667 madt_parse_nmi((ACPI_MADT_NMI_SOURCE *)entry); 668 break; 669 case ACPI_MADT_TYPE_LOCAL_APIC_NMI: 670 madt_parse_local_nmi((ACPI_MADT_LOCAL_APIC_NMI *)entry); 671 break; 672 case ACPI_MADT_TYPE_LOCAL_X2APIC_NMI: 673 madt_parse_local_x2apic_nmi( 674 (ACPI_MADT_LOCAL_X2APIC_NMI *)entry); 675 break; 676 } 677 } 678 679 /* 680 * Setup per-CPU ACPI IDs. 681 */ 682 static void 683 madt_set_ids(void *dummy) 684 { 685 struct lapic_info *la; 686 struct pcpu *pc; 687 u_int i; 688 689 if (madt == NULL) 690 return; 691 CPU_FOREACH(i) { 692 pc = pcpu_find(i); 693 KASSERT(pc != NULL, ("no pcpu data for CPU %u", i)); 694 la = &lapics[pc->pc_apic_id]; 695 if (!la->la_enabled) 696 panic("APIC: CPU with APIC ID %u is not enabled", 697 pc->pc_apic_id); 698 pc->pc_acpi_id = la->la_acpi_id; 699 if (bootverbose) 700 printf("APIC: CPU %u has ACPI ID %u\n", i, 701 la->la_acpi_id); 702 } 703 } 704 SYSINIT(madt_set_ids, SI_SUB_CPU, SI_ORDER_MIDDLE, madt_set_ids, NULL); 705