1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2003 John Baldwin <jhb@FreeBSD.org> 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 28 #include <sys/cdefs.h> 29 __FBSDID("$FreeBSD$"); 30 31 #include <sys/param.h> 32 #include <sys/systm.h> 33 #include <sys/bus.h> 34 #include <sys/kernel.h> 35 #include <sys/limits.h> 36 #include <sys/malloc.h> 37 #include <sys/smp.h> 38 #include <vm/vm.h> 39 #include <vm/pmap.h> 40 41 #include <x86/apicreg.h> 42 #include <machine/intr_machdep.h> 43 #include <x86/apicvar.h> 44 #include <machine/md_var.h> 45 #include <x86/vmware.h> 46 47 #include <contrib/dev/acpica/include/acpi.h> 48 #include <contrib/dev/acpica/include/aclocal.h> 49 #include <contrib/dev/acpica/include/actables.h> 50 51 #include <dev/acpica/acpivar.h> 52 #include <dev/pci/pcivar.h> 53 54 /* These two arrays are indexed by APIC IDs. */ 55 static struct { 56 void *io_apic; 57 UINT32 io_vector; 58 } *ioapics; 59 60 static struct lapic_info { 61 u_int la_enabled; 62 u_int la_acpi_id; 63 } *lapics; 64 65 int madt_found_sci_override; 66 static ACPI_TABLE_MADT *madt; 67 static vm_paddr_t madt_physaddr; 68 static vm_offset_t madt_length; 69 70 static MALLOC_DEFINE(M_MADT, "madt_table", "ACPI MADT Table Items"); 71 72 static enum intr_polarity interrupt_polarity(UINT16 IntiFlags, UINT8 Source); 73 static enum intr_trigger interrupt_trigger(UINT16 IntiFlags, UINT8 Source); 74 static int madt_find_cpu(u_int acpi_id, u_int *apic_id); 75 static int madt_find_interrupt(int intr, void **apic, u_int *pin); 76 static void madt_parse_apics(ACPI_SUBTABLE_HEADER *entry, void *arg); 77 static void madt_parse_interrupt_override( 78 ACPI_MADT_INTERRUPT_OVERRIDE *intr); 79 static void madt_parse_ints(ACPI_SUBTABLE_HEADER *entry, 80 void *arg __unused); 81 static void madt_parse_local_nmi(ACPI_MADT_LOCAL_APIC_NMI *nmi); 82 static void madt_parse_nmi(ACPI_MADT_NMI_SOURCE *nmi); 83 static int madt_probe(void); 84 static int madt_probe_cpus(void); 85 static void madt_probe_cpus_handler(ACPI_SUBTABLE_HEADER *entry, 86 void *arg __unused); 87 static void madt_setup_cpus_handler(ACPI_SUBTABLE_HEADER *entry, 88 void *arg __unused); 89 static void madt_register(void *dummy); 90 static int madt_setup_local(void); 91 static int madt_setup_io(void); 92 static void madt_walk_table(acpi_subtable_handler *handler, void *arg); 93 94 static struct apic_enumerator madt_enumerator = { 95 .apic_name = "MADT", 96 .apic_probe = madt_probe, 97 .apic_probe_cpus = madt_probe_cpus, 98 .apic_setup_local = madt_setup_local, 99 .apic_setup_io = madt_setup_io 100 }; 101 102 /* 103 * Look for an ACPI Multiple APIC Description Table ("APIC") 104 */ 105 static int 106 madt_probe(void) 107 { 108 109 madt_physaddr = acpi_find_table(ACPI_SIG_MADT); 110 if (madt_physaddr == 0) 111 return (ENXIO); 112 return (-50); 113 } 114 115 /* 116 * Run through the MP table enumerating CPUs. 117 */ 118 static int 119 madt_probe_cpus(void) 120 { 121 122 madt = acpi_map_table(madt_physaddr, ACPI_SIG_MADT); 123 madt_length = madt->Header.Length; 124 KASSERT(madt != NULL, ("Unable to re-map MADT")); 125 madt_walk_table(madt_probe_cpus_handler, NULL); 126 acpi_unmap_table(madt); 127 madt = NULL; 128 return (0); 129 } 130 131 static const char *x2apic_sandy_dis[] = { 132 "LENOVO", 133 "ASUSTeK Computer Inc.", 134 "SAMSUNG ELECTRONICS CO., LTD.", 135 }; 136 137 /* 138 * Automatically detect several configurations where x2APIC mode is 139 * known to cause troubles. User can override the setting with 140 * hw.x2apic_enable tunable. 141 */ 142 static const char * 143 madt_x2apic_disable_reason(void) 144 { 145 ACPI_TABLE_DMAR *dmartbl; 146 vm_paddr_t dmartbl_physaddr; 147 const char *reason; 148 char *hw_vendor; 149 u_int p[4]; 150 int i; 151 152 reason = NULL; 153 154 dmartbl_physaddr = acpi_find_table(ACPI_SIG_DMAR); 155 if (dmartbl_physaddr != 0) { 156 dmartbl = acpi_map_table(dmartbl_physaddr, ACPI_SIG_DMAR); 157 if ((dmartbl->Flags & ACPI_DMAR_X2APIC_OPT_OUT) != 0) 158 reason = "by DMAR table"; 159 acpi_unmap_table(dmartbl); 160 if (reason != NULL) 161 return (reason); 162 } 163 164 if (vm_guest == VM_GUEST_VMWARE) { 165 vmware_hvcall(VMW_HVCMD_GETVCPU_INFO, p); 166 if ((p[0] & VMW_VCPUINFO_VCPU_RESERVED) != 0 || 167 (p[0] & VMW_VCPUINFO_LEGACY_X2APIC) == 0) 168 return ("inside VMWare without intr redirection"); 169 } 170 171 if (vm_guest == VM_GUEST_XEN) 172 return ("due to running under XEN"); 173 174 if (vm_guest == VM_GUEST_NO && 175 CPUID_TO_FAMILY(cpu_id) == 0x6 && 176 CPUID_TO_MODEL(cpu_id) == 0x2a) { 177 hw_vendor = kern_getenv("smbios.planar.maker"); 178 /* 179 * It seems that some SandyBridge-based notebook 180 * BIOSes have a bug which prevents booting AP in 181 * x2APIC mode. Since the only way to detect mobile 182 * CPU is to check northbridge pci id, which cannot be 183 * done that early, disable x2APIC for all such 184 * machines. 185 */ 186 if (hw_vendor != NULL) { 187 for (i = 0; i < nitems(x2apic_sandy_dis); i++) { 188 if (strcmp(hw_vendor, x2apic_sandy_dis[i]) == 189 0) { 190 reason = 191 "for a suspected SandyBridge BIOS bug"; 192 break; 193 } 194 } 195 freeenv(hw_vendor); 196 } 197 if (reason != NULL) 198 return (reason); 199 } 200 201 return (NULL); 202 } 203 204 /* 205 * Initialize the local APIC on the BSP. 206 */ 207 static int 208 madt_setup_local(void) 209 { 210 const char *reason; 211 int user_x2apic; 212 bool bios_x2apic; 213 214 if ((cpu_feature2 & CPUID2_X2APIC) != 0) { 215 reason = madt_x2apic_disable_reason(); 216 bios_x2apic = lapic_is_x2apic(); 217 if (reason != NULL && bios_x2apic) { 218 if (bootverbose) 219 printf("x2APIC should be disabled %s but " 220 "already enabled by BIOS; enabling.\n", 221 reason); 222 reason = NULL; 223 } 224 if (reason == NULL) 225 x2apic_mode = 1; 226 else if (bootverbose) 227 printf("x2APIC available but disabled %s\n", reason); 228 user_x2apic = x2apic_mode; 229 TUNABLE_INT_FETCH("hw.x2apic_enable", &user_x2apic); 230 if (user_x2apic != x2apic_mode) { 231 if (bios_x2apic && !user_x2apic) 232 printf("x2APIC disabled by tunable and " 233 "enabled by BIOS; ignoring tunable."); 234 else 235 x2apic_mode = user_x2apic; 236 } 237 } 238 239 /* 240 * Truncate max_apic_id if not in x2APIC mode. Some structures 241 * will already be allocated with the previous max_apic_id, but 242 * at least we can prevent wasting more memory elsewhere. 243 */ 244 if (!x2apic_mode) 245 max_apic_id = min(max_apic_id, xAPIC_MAX_APIC_ID); 246 247 madt = pmap_mapbios(madt_physaddr, madt_length); 248 lapics = malloc(sizeof(*lapics) * (max_apic_id + 1), M_MADT, 249 M_WAITOK | M_ZERO); 250 madt_walk_table(madt_setup_cpus_handler, NULL); 251 252 lapic_init(madt->Address); 253 printf("ACPI APIC Table: <%.*s %.*s>\n", 254 (int)sizeof(madt->Header.OemId), madt->Header.OemId, 255 (int)sizeof(madt->Header.OemTableId), madt->Header.OemTableId); 256 257 /* 258 * We ignore 64-bit local APIC override entries. Should we 259 * perhaps emit a warning here if we find one? 260 */ 261 return (0); 262 } 263 264 /* 265 * Enumerate I/O APICs and setup interrupt sources. 266 */ 267 static int 268 madt_setup_io(void) 269 { 270 void *ioapic; 271 u_int pin; 272 int i; 273 274 KASSERT(lapics != NULL, ("local APICs not initialized")); 275 276 /* Try to initialize ACPI so that we can access the FADT. */ 277 i = acpi_Startup(); 278 if (ACPI_FAILURE(i)) { 279 printf("MADT: ACPI Startup failed with %s\n", 280 AcpiFormatException(i)); 281 printf("Try disabling either ACPI or apic support.\n"); 282 panic("Using MADT but ACPI doesn't work"); 283 } 284 285 ioapics = malloc(sizeof(*ioapics) * (IOAPIC_MAX_ID + 1), M_MADT, 286 M_WAITOK | M_ZERO); 287 288 /* First, we run through adding I/O APIC's. */ 289 madt_walk_table(madt_parse_apics, NULL); 290 291 /* Second, we run through the table tweaking interrupt sources. */ 292 madt_walk_table(madt_parse_ints, NULL); 293 294 /* 295 * If there was not an explicit override entry for the SCI, 296 * force it to use level trigger and active-low polarity. 297 */ 298 if (!madt_found_sci_override) { 299 if (madt_find_interrupt(AcpiGbl_FADT.SciInterrupt, &ioapic, 300 &pin) != 0) 301 printf("MADT: Could not find APIC for SCI IRQ %u\n", 302 AcpiGbl_FADT.SciInterrupt); 303 else { 304 printf( 305 "MADT: Forcing active-low polarity and level trigger for SCI\n"); 306 ioapic_set_polarity(ioapic, pin, INTR_POLARITY_LOW); 307 ioapic_set_triggermode(ioapic, pin, INTR_TRIGGER_LEVEL); 308 } 309 } 310 311 /* Third, we register all the I/O APIC's. */ 312 for (i = 0; i <= IOAPIC_MAX_ID; i++) 313 if (ioapics[i].io_apic != NULL) 314 ioapic_register(ioapics[i].io_apic); 315 316 /* Finally, we throw the switch to enable the I/O APIC's. */ 317 acpi_SetDefaultIntrModel(ACPI_INTR_APIC); 318 319 free(ioapics, M_MADT); 320 ioapics = NULL; 321 322 /* NB: this is the last use of the lapics array. */ 323 free(lapics, M_MADT); 324 lapics = NULL; 325 326 return (0); 327 } 328 329 static void 330 madt_register(void *dummy __unused) 331 { 332 333 apic_register_enumerator(&madt_enumerator); 334 } 335 SYSINIT(madt_register, SI_SUB_TUNABLES - 1, SI_ORDER_FIRST, madt_register, NULL); 336 337 /* 338 * Call the handler routine for each entry in the MADT table. 339 */ 340 static void 341 madt_walk_table(acpi_subtable_handler *handler, void *arg) 342 { 343 344 acpi_walk_subtables(madt + 1, (char *)madt + madt->Header.Length, 345 handler, arg); 346 } 347 348 static void 349 madt_parse_cpu(unsigned int apic_id, unsigned int flags) 350 { 351 352 if (!(flags & ACPI_MADT_ENABLED) || 353 #ifdef SMP 354 mp_ncpus == MAXCPU || 355 #endif 356 apic_id > MAX_APIC_ID) 357 return; 358 359 #ifdef SMP 360 mp_ncpus++; 361 mp_maxid = mp_ncpus - 1; 362 #endif 363 max_apic_id = max(apic_id, max_apic_id); 364 } 365 366 static void 367 madt_add_cpu(u_int acpi_id, u_int apic_id, u_int flags) 368 { 369 struct lapic_info *la; 370 371 /* 372 * The MADT does not include a BSP flag, so we have to let the 373 * MP code figure out which CPU is the BSP on its own. 374 */ 375 if (bootverbose) 376 printf("MADT: Found CPU APIC ID %u ACPI ID %u: %s\n", 377 apic_id, acpi_id, flags & ACPI_MADT_ENABLED ? 378 "enabled" : "disabled"); 379 if (!(flags & ACPI_MADT_ENABLED)) 380 return; 381 if (apic_id > max_apic_id) { 382 printf("MADT: Ignoring local APIC ID %u (too high)\n", 383 apic_id); 384 return; 385 } 386 387 la = &lapics[apic_id]; 388 KASSERT(la->la_enabled == 0, ("Duplicate local APIC ID %u", apic_id)); 389 la->la_enabled = 1; 390 la->la_acpi_id = acpi_id; 391 lapic_create(apic_id, 0); 392 } 393 394 static void 395 madt_probe_cpus_handler(ACPI_SUBTABLE_HEADER *entry, void *arg) 396 { 397 ACPI_MADT_LOCAL_APIC *proc; 398 ACPI_MADT_LOCAL_X2APIC *x2apic; 399 400 switch (entry->Type) { 401 case ACPI_MADT_TYPE_LOCAL_APIC: 402 proc = (ACPI_MADT_LOCAL_APIC *)entry; 403 madt_parse_cpu(proc->Id, proc->LapicFlags); 404 break; 405 case ACPI_MADT_TYPE_LOCAL_X2APIC: 406 x2apic = (ACPI_MADT_LOCAL_X2APIC *)entry; 407 madt_parse_cpu(x2apic->LocalApicId, x2apic->LapicFlags); 408 break; 409 } 410 } 411 412 static void 413 madt_setup_cpus_handler(ACPI_SUBTABLE_HEADER *entry, void *arg) 414 { 415 ACPI_MADT_LOCAL_APIC *proc; 416 ACPI_MADT_LOCAL_X2APIC *x2apic; 417 418 switch (entry->Type) { 419 case ACPI_MADT_TYPE_LOCAL_APIC: 420 proc = (ACPI_MADT_LOCAL_APIC *)entry; 421 madt_add_cpu(proc->ProcessorId, proc->Id, proc->LapicFlags); 422 break; 423 case ACPI_MADT_TYPE_LOCAL_X2APIC: 424 x2apic = (ACPI_MADT_LOCAL_X2APIC *)entry; 425 madt_add_cpu(x2apic->Uid, x2apic->LocalApicId, 426 x2apic->LapicFlags); 427 break; 428 } 429 } 430 431 /* 432 * Add an I/O APIC from an entry in the table. 433 */ 434 static void 435 madt_parse_apics(ACPI_SUBTABLE_HEADER *entry, void *arg __unused) 436 { 437 ACPI_MADT_IO_APIC *apic; 438 439 switch (entry->Type) { 440 case ACPI_MADT_TYPE_IO_APIC: 441 apic = (ACPI_MADT_IO_APIC *)entry; 442 if (bootverbose) 443 printf( 444 "MADT: Found IO APIC ID %u, Interrupt %u at %p\n", 445 apic->Id, apic->GlobalIrqBase, 446 (void *)(uintptr_t)apic->Address); 447 if (apic->Id > IOAPIC_MAX_ID) 448 panic("%s: I/O APIC ID %u too high", __func__, 449 apic->Id); 450 if (ioapics[apic->Id].io_apic != NULL) 451 panic("%s: Double APIC ID %u", __func__, apic->Id); 452 ioapics[apic->Id].io_apic = ioapic_create(apic->Address, 453 apic->Id, apic->GlobalIrqBase); 454 ioapics[apic->Id].io_vector = apic->GlobalIrqBase; 455 break; 456 default: 457 break; 458 } 459 } 460 461 /* 462 * Determine properties of an interrupt source. Note that for ACPI these 463 * functions are only used for ISA interrupts, so we assume ISA bus values 464 * (Active Hi, Edge Triggered) for conforming values except for the ACPI 465 * SCI for which we use Active Lo, Level Triggered. 466 */ 467 static enum intr_polarity 468 interrupt_polarity(UINT16 IntiFlags, UINT8 Source) 469 { 470 471 switch (IntiFlags & ACPI_MADT_POLARITY_MASK) { 472 default: 473 printf("WARNING: Bogus Interrupt Polarity. Assume CONFORMS\n"); 474 /* FALLTHROUGH*/ 475 case ACPI_MADT_POLARITY_CONFORMS: 476 if (Source == AcpiGbl_FADT.SciInterrupt) 477 return (INTR_POLARITY_LOW); 478 else 479 return (INTR_POLARITY_HIGH); 480 case ACPI_MADT_POLARITY_ACTIVE_HIGH: 481 return (INTR_POLARITY_HIGH); 482 case ACPI_MADT_POLARITY_ACTIVE_LOW: 483 return (INTR_POLARITY_LOW); 484 } 485 } 486 487 static enum intr_trigger 488 interrupt_trigger(UINT16 IntiFlags, UINT8 Source) 489 { 490 491 switch (IntiFlags & ACPI_MADT_TRIGGER_MASK) { 492 default: 493 printf("WARNING: Bogus Interrupt Trigger Mode. Assume CONFORMS.\n"); 494 /*FALLTHROUGH*/ 495 case ACPI_MADT_TRIGGER_CONFORMS: 496 if (Source == AcpiGbl_FADT.SciInterrupt) 497 return (INTR_TRIGGER_LEVEL); 498 else 499 return (INTR_TRIGGER_EDGE); 500 case ACPI_MADT_TRIGGER_EDGE: 501 return (INTR_TRIGGER_EDGE); 502 case ACPI_MADT_TRIGGER_LEVEL: 503 return (INTR_TRIGGER_LEVEL); 504 } 505 } 506 507 /* 508 * Find the local APIC ID associated with a given ACPI Processor ID. 509 */ 510 static int 511 madt_find_cpu(u_int acpi_id, u_int *apic_id) 512 { 513 int i; 514 515 for (i = 0; i <= max_apic_id; i++) { 516 if (!lapics[i].la_enabled) 517 continue; 518 if (lapics[i].la_acpi_id != acpi_id) 519 continue; 520 *apic_id = i; 521 return (0); 522 } 523 return (ENOENT); 524 } 525 526 /* 527 * Find the IO APIC and pin on that APIC associated with a given global 528 * interrupt. 529 */ 530 static int 531 madt_find_interrupt(int intr, void **apic, u_int *pin) 532 { 533 int i, best; 534 535 best = -1; 536 for (i = 0; i <= IOAPIC_MAX_ID; i++) { 537 if (ioapics[i].io_apic == NULL || 538 ioapics[i].io_vector > intr) 539 continue; 540 if (best == -1 || 541 ioapics[best].io_vector < ioapics[i].io_vector) 542 best = i; 543 } 544 if (best == -1) 545 return (ENOENT); 546 *apic = ioapics[best].io_apic; 547 *pin = intr - ioapics[best].io_vector; 548 if (*pin > 32) 549 printf("WARNING: Found intpin of %u for vector %d\n", *pin, 550 intr); 551 return (0); 552 } 553 554 void 555 madt_parse_interrupt_values(void *entry, 556 enum intr_trigger *trig, enum intr_polarity *pol) 557 { 558 ACPI_MADT_INTERRUPT_OVERRIDE *intr; 559 char buf[64]; 560 561 intr = entry; 562 563 if (bootverbose) 564 printf("MADT: Interrupt override: source %u, irq %u\n", 565 intr->SourceIrq, intr->GlobalIrq); 566 KASSERT(intr->Bus == 0, ("bus for interrupt overrides must be zero")); 567 568 /* 569 * Lookup the appropriate trigger and polarity modes for this 570 * entry. 571 */ 572 *trig = interrupt_trigger(intr->IntiFlags, intr->SourceIrq); 573 *pol = interrupt_polarity(intr->IntiFlags, intr->SourceIrq); 574 575 /* 576 * If the SCI is identity mapped but has edge trigger and 577 * active-hi polarity or the force_sci_lo tunable is set, 578 * force it to use level/lo. 579 */ 580 if (intr->SourceIrq == AcpiGbl_FADT.SciInterrupt) { 581 madt_found_sci_override = 1; 582 if (getenv_string("hw.acpi.sci.trigger", buf, sizeof(buf))) { 583 if (tolower(buf[0]) == 'e') 584 *trig = INTR_TRIGGER_EDGE; 585 else if (tolower(buf[0]) == 'l') 586 *trig = INTR_TRIGGER_LEVEL; 587 else 588 panic( 589 "Invalid trigger %s: must be 'edge' or 'level'", 590 buf); 591 printf("MADT: Forcing SCI to %s trigger\n", 592 *trig == INTR_TRIGGER_EDGE ? "edge" : "level"); 593 } 594 if (getenv_string("hw.acpi.sci.polarity", buf, sizeof(buf))) { 595 if (tolower(buf[0]) == 'h') 596 *pol = INTR_POLARITY_HIGH; 597 else if (tolower(buf[0]) == 'l') 598 *pol = INTR_POLARITY_LOW; 599 else 600 panic( 601 "Invalid polarity %s: must be 'high' or 'low'", 602 buf); 603 printf("MADT: Forcing SCI to active %s polarity\n", 604 *pol == INTR_POLARITY_HIGH ? "high" : "low"); 605 } 606 } 607 } 608 609 /* 610 * Parse an interrupt source override for an ISA interrupt. 611 */ 612 static void 613 madt_parse_interrupt_override(ACPI_MADT_INTERRUPT_OVERRIDE *intr) 614 { 615 void *new_ioapic, *old_ioapic; 616 u_int new_pin, old_pin; 617 enum intr_trigger trig; 618 enum intr_polarity pol; 619 620 if (acpi_quirks & ACPI_Q_MADT_IRQ0 && intr->SourceIrq == 0 && 621 intr->GlobalIrq == 2) { 622 if (bootverbose) 623 printf("MADT: Skipping timer override\n"); 624 return; 625 } 626 627 if (madt_find_interrupt(intr->GlobalIrq, &new_ioapic, &new_pin) != 0) { 628 printf("MADT: Could not find APIC for vector %u (IRQ %u)\n", 629 intr->GlobalIrq, intr->SourceIrq); 630 return; 631 } 632 633 madt_parse_interrupt_values(intr, &trig, &pol); 634 635 /* Remap the IRQ if it is mapped to a different interrupt vector. */ 636 if (intr->SourceIrq != intr->GlobalIrq) { 637 /* 638 * If the SCI is remapped to a non-ISA global interrupt, 639 * then override the vector we use to setup and allocate 640 * the interrupt. 641 */ 642 if (intr->GlobalIrq > 15 && 643 intr->SourceIrq == AcpiGbl_FADT.SciInterrupt) 644 acpi_OverrideInterruptLevel(intr->GlobalIrq); 645 else 646 ioapic_remap_vector(new_ioapic, new_pin, 647 intr->SourceIrq); 648 if (madt_find_interrupt(intr->SourceIrq, &old_ioapic, 649 &old_pin) != 0) 650 printf("MADT: Could not find APIC for source IRQ %u\n", 651 intr->SourceIrq); 652 else if (ioapic_get_vector(old_ioapic, old_pin) == 653 intr->SourceIrq) 654 ioapic_disable_pin(old_ioapic, old_pin); 655 } 656 657 /* Program the polarity and trigger mode. */ 658 ioapic_set_triggermode(new_ioapic, new_pin, trig); 659 ioapic_set_polarity(new_ioapic, new_pin, pol); 660 } 661 662 /* 663 * Parse an entry for an NMI routed to an IO APIC. 664 */ 665 static void 666 madt_parse_nmi(ACPI_MADT_NMI_SOURCE *nmi) 667 { 668 void *ioapic; 669 u_int pin; 670 671 if (madt_find_interrupt(nmi->GlobalIrq, &ioapic, &pin) != 0) { 672 printf("MADT: Could not find APIC for vector %u\n", 673 nmi->GlobalIrq); 674 return; 675 } 676 677 ioapic_set_nmi(ioapic, pin); 678 if (!(nmi->IntiFlags & ACPI_MADT_TRIGGER_CONFORMS)) 679 ioapic_set_triggermode(ioapic, pin, 680 interrupt_trigger(nmi->IntiFlags, 0)); 681 if (!(nmi->IntiFlags & ACPI_MADT_POLARITY_CONFORMS)) 682 ioapic_set_polarity(ioapic, pin, 683 interrupt_polarity(nmi->IntiFlags, 0)); 684 } 685 686 /* 687 * Parse an entry for an NMI routed to a local APIC LVT pin. 688 */ 689 static void 690 madt_handle_local_nmi(u_int acpi_id, UINT8 Lint, UINT16 IntiFlags) 691 { 692 u_int apic_id, pin; 693 694 if (acpi_id == 0xffffffff) 695 apic_id = APIC_ID_ALL; 696 else if (madt_find_cpu(acpi_id, &apic_id) != 0) { 697 if (bootverbose) 698 printf("MADT: Ignoring local NMI routed to " 699 "ACPI CPU %u\n", acpi_id); 700 return; 701 } 702 if (Lint == 0) 703 pin = APIC_LVT_LINT0; 704 else 705 pin = APIC_LVT_LINT1; 706 lapic_set_lvt_mode(apic_id, pin, APIC_LVT_DM_NMI); 707 if (!(IntiFlags & ACPI_MADT_TRIGGER_CONFORMS)) 708 lapic_set_lvt_triggermode(apic_id, pin, 709 interrupt_trigger(IntiFlags, 0)); 710 if (!(IntiFlags & ACPI_MADT_POLARITY_CONFORMS)) 711 lapic_set_lvt_polarity(apic_id, pin, 712 interrupt_polarity(IntiFlags, 0)); 713 } 714 715 static void 716 madt_parse_local_nmi(ACPI_MADT_LOCAL_APIC_NMI *nmi) 717 { 718 719 madt_handle_local_nmi(nmi->ProcessorId == 0xff ? 0xffffffff : 720 nmi->ProcessorId, nmi->Lint, nmi->IntiFlags); 721 } 722 723 static void 724 madt_parse_local_x2apic_nmi(ACPI_MADT_LOCAL_X2APIC_NMI *nmi) 725 { 726 727 madt_handle_local_nmi(nmi->Uid, nmi->Lint, nmi->IntiFlags); 728 } 729 730 /* 731 * Parse interrupt entries. 732 */ 733 static void 734 madt_parse_ints(ACPI_SUBTABLE_HEADER *entry, void *arg __unused) 735 { 736 737 switch (entry->Type) { 738 case ACPI_MADT_TYPE_INTERRUPT_OVERRIDE: 739 madt_parse_interrupt_override( 740 (ACPI_MADT_INTERRUPT_OVERRIDE *)entry); 741 break; 742 case ACPI_MADT_TYPE_NMI_SOURCE: 743 madt_parse_nmi((ACPI_MADT_NMI_SOURCE *)entry); 744 break; 745 case ACPI_MADT_TYPE_LOCAL_APIC_NMI: 746 madt_parse_local_nmi((ACPI_MADT_LOCAL_APIC_NMI *)entry); 747 break; 748 case ACPI_MADT_TYPE_LOCAL_X2APIC_NMI: 749 madt_parse_local_x2apic_nmi( 750 (ACPI_MADT_LOCAL_X2APIC_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; 767 768 KASSERT(lapics != NULL, ("local APICs not initialized")); 769 770 CPU_FOREACH(i) { 771 pc = pcpu_find(i); 772 KASSERT(pc != NULL, ("no pcpu data for CPU %u", i)); 773 la = &lapics[pc->pc_apic_id]; 774 if (!la->la_enabled) 775 panic("APIC: CPU with APIC ID %u is not enabled", 776 pc->pc_apic_id); 777 pc->pc_acpi_id = la->la_acpi_id; 778 if (bootverbose) 779 printf("APIC: CPU %u has ACPI ID %u\n", i, 780 la->la_acpi_id); 781 } 782 } 783 SYSINIT(madt_set_ids, SI_SUB_CPU, SI_ORDER_MIDDLE, madt_set_ids, NULL); 784