madt.c revision 262192
1198092Srdivacky/*- 2198092Srdivacky * Copyright (c) 2003 John Baldwin <jhb@FreeBSD.org> 3198092Srdivacky * All rights reserved. 4198092Srdivacky * 5198092Srdivacky * Redistribution and use in source and binary forms, with or without 6198092Srdivacky * modification, are permitted provided that the following conditions 7198092Srdivacky * are met: 8198092Srdivacky * 1. Redistributions of source code must retain the above copyright 9198092Srdivacky * notice, this list of conditions and the following disclaimer. 10198092Srdivacky * 2. Redistributions in binary form must reproduce the above copyright 11198092Srdivacky * notice, this list of conditions and the following disclaimer in the 12198092Srdivacky * documentation and/or other materials provided with the distribution. 13198092Srdivacky * 14198112Srdivacky * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15198092Srdivacky * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16202379Srdivacky * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17202879Srdivacky * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18198092Srdivacky * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19198092Srdivacky * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20198092Srdivacky * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21198092Srdivacky * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22198092Srdivacky * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23198092Srdivacky * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24198092Srdivacky * SUCH DAMAGE. 25198398Srdivacky */ 26198398Srdivacky 27198398Srdivacky#include <sys/cdefs.h> 28198112Srdivacky__FBSDID("$FreeBSD: stable/10/sys/x86/acpica/madt.c 262192 2014-02-18 20:27:17Z jhb $"); 29198398Srdivacky 30208600Srdivacky#include <sys/param.h> 31198398Srdivacky#include <sys/systm.h> 32198092Srdivacky#include <sys/bus.h> 33198398Srdivacky#include <sys/kernel.h> 34198092Srdivacky#include <sys/malloc.h> 35198092Srdivacky#include <sys/smp.h> 36208600Srdivacky#include <vm/vm.h> 37198398Srdivacky#include <vm/pmap.h> 38198398Srdivacky 39198092Srdivacky#include <x86/apicreg.h> 40198092Srdivacky#include <machine/intr_machdep.h> 41198092Srdivacky#include <machine/apicvar.h> 42198398Srdivacky 43198398Srdivacky#include <contrib/dev/acpica/include/acpi.h> 44198398Srdivacky#include <contrib/dev/acpica/include/actables.h> 45198112Srdivacky 46198398Srdivacky#include <dev/acpica/acpivar.h> 47198398Srdivacky#include <dev/pci/pcivar.h> 48198398Srdivacky 49198092Srdivacky/* These two arrays are indexed by APIC IDs. */ 50198398Srdivackystatic struct { 51198092Srdivacky void *io_apic; 52198092Srdivacky UINT32 io_vector; 53198092Srdivacky} *ioapics; 54198112Srdivacky 55198112Srdivackystatic struct lapic_info { 56198112Srdivacky u_int la_enabled:1; 57198092Srdivacky u_int la_acpi_id:8; 58198092Srdivacky} lapics[MAX_APIC_ID + 1]; 59198092Srdivacky 60198398Srdivackystatic int madt_found_sci_override; 61198398Srdivackystatic ACPI_TABLE_MADT *madt; 62198398Srdivackystatic vm_paddr_t madt_physaddr; 63198398Srdivackystatic vm_offset_t madt_length; 64198398Srdivacky 65198398Srdivackystatic MALLOC_DEFINE(M_MADT, "madt_table", "ACPI MADT Table Items"); 66198398Srdivacky 67198092Srdivackystatic enum intr_polarity interrupt_polarity(UINT16 IntiFlags, UINT8 Source); 68198398Srdivackystatic enum intr_trigger interrupt_trigger(UINT16 IntiFlags, UINT8 Source); 69198092Srdivackystatic int madt_find_cpu(u_int acpi_id, u_int *apic_id); 70198092Srdivackystatic int madt_find_interrupt(int intr, void **apic, u_int *pin); 71198092Srdivackystatic void madt_parse_apics(ACPI_SUBTABLE_HEADER *entry, void *arg); 72198092Srdivackystatic void madt_parse_interrupt_override( 73198398Srdivacky ACPI_MADT_INTERRUPT_OVERRIDE *intr); 74198398Srdivackystatic void madt_parse_ints(ACPI_SUBTABLE_HEADER *entry, 75198092Srdivacky void *arg __unused); 76198092Srdivackystatic void madt_parse_local_nmi(ACPI_MADT_LOCAL_APIC_NMI *nmi); 77198398Srdivackystatic void madt_parse_nmi(ACPI_MADT_NMI_SOURCE *nmi); 78198398Srdivackystatic int madt_probe(void); 79198398Srdivackystatic int madt_probe_cpus(void); 80218893Sdimstatic void madt_probe_cpus_handler(ACPI_SUBTABLE_HEADER *entry, 81218893Sdim void *arg __unused); 82208600Srdivackystatic void madt_register(void *dummy); 83208600Srdivackystatic int madt_setup_local(void); 84208600Srdivackystatic int madt_setup_io(void); 85208600Srdivackystatic void madt_walk_table(acpi_subtable_handler *handler, void *arg); 86208600Srdivacky 87208600Srdivackystatic struct apic_enumerator madt_enumerator = { 88218893Sdim "MADT", 89208600Srdivacky madt_probe, 90208600Srdivacky madt_probe_cpus, 91208600Srdivacky madt_setup_local, 92208600Srdivacky madt_setup_io 93208600Srdivacky}; 94208600Srdivacky 95208600Srdivacky/* 96198092Srdivacky * Look for an ACPI Multiple APIC Description Table ("APIC") 97200583Srdivacky */ 98208600Srdivackystatic int 99208600Srdivackymadt_probe(void) 100208600Srdivacky{ 101208600Srdivacky 102208600Srdivacky madt_physaddr = acpi_find_table(ACPI_SIG_MADT); 103208600Srdivacky if (madt_physaddr == 0) 104208600Srdivacky return (ENXIO); 105221345Sdim return (0); 106221345Sdim} 107208600Srdivacky 108208600Srdivacky/* 109208600Srdivacky * Run through the MP table enumerating CPUs. 110208600Srdivacky */ 111208600Srdivackystatic int 112208600Srdivackymadt_probe_cpus(void) 113208600Srdivacky{ 114208600Srdivacky 115208600Srdivacky madt = acpi_map_table(madt_physaddr, ACPI_SIG_MADT); 116208600Srdivacky madt_length = madt->Header.Length; 117208600Srdivacky KASSERT(madt != NULL, ("Unable to re-map MADT")); 118208600Srdivacky madt_walk_table(madt_probe_cpus_handler, NULL); 119208600Srdivacky acpi_unmap_table(madt); 120208600Srdivacky madt = NULL; 121221345Sdim return (0); 122208600Srdivacky} 123208600Srdivacky 124208600Srdivacky/* 125221345Sdim * Initialize the local APIC on the BSP. 126221345Sdim */ 127221345Sdimstatic int 128221345Sdimmadt_setup_local(void) 129221345Sdim{ 130221345Sdim 131221345Sdim madt = pmap_mapbios(madt_physaddr, madt_length); 132221345Sdim lapic_init(madt->Address); 133221345Sdim printf("ACPI APIC Table: <%.*s %.*s>\n", 134221345Sdim (int)sizeof(madt->Header.OemId), madt->Header.OemId, 135221345Sdim (int)sizeof(madt->Header.OemTableId), madt->Header.OemTableId); 136208600Srdivacky 137221345Sdim /* 138221345Sdim * We ignore 64-bit local APIC override entries. Should we 139221345Sdim * perhaps emit a warning here if we find one? 140221345Sdim */ 141221345Sdim return (0); 142221345Sdim} 143221345Sdim 144221345Sdim/* 145221345Sdim * Enumerate I/O APICs and setup interrupt sources. 146208600Srdivacky */ 147208600Srdivackystatic int 148221345Sdimmadt_setup_io(void) 149208600Srdivacky{ 150221345Sdim void *ioapic; 151208600Srdivacky u_int pin; 152208600Srdivacky int i; 153208600Srdivacky 154208600Srdivacky /* Try to initialize ACPI so that we can access the FADT. */ 155200583Srdivacky i = acpi_Startup(); 156200583Srdivacky if (ACPI_FAILURE(i)) { 157200583Srdivacky printf("MADT: ACPI Startup failed with %s\n", 158200583Srdivacky AcpiFormatException(i)); 159200583Srdivacky printf("Try disabling either ACPI or apic support.\n"); 160200583Srdivacky panic("Using MADT but ACPI doesn't work"); 161200583Srdivacky } 162200583Srdivacky 163200583Srdivacky ioapics = malloc(sizeof(*ioapics) * (MAX_APIC_ID + 1), M_MADT, 164200583Srdivacky M_WAITOK | M_ZERO); 165200583Srdivacky 166200583Srdivacky /* First, we run through adding I/O APIC's. */ 167200583Srdivacky madt_walk_table(madt_parse_apics, NULL); 168200583Srdivacky 169200583Srdivacky /* Second, we run through the table tweaking interrupt sources. */ 170200583Srdivacky madt_walk_table(madt_parse_ints, NULL); 171200583Srdivacky 172200583Srdivacky /* 173200583Srdivacky * If there was not an explicit override entry for the SCI, 174200583Srdivacky * force it to use level trigger and active-low polarity. 175200583Srdivacky */ 176200583Srdivacky if (!madt_found_sci_override) { 177200583Srdivacky if (madt_find_interrupt(AcpiGbl_FADT.SciInterrupt, &ioapic, 178200583Srdivacky &pin) != 0) 179200583Srdivacky printf("MADT: Could not find APIC for SCI IRQ %u\n", 180200583Srdivacky AcpiGbl_FADT.SciInterrupt); 181200583Srdivacky else { 182200583Srdivacky printf( 183202379Srdivacky "MADT: Forcing active-low polarity and level trigger for SCI\n"); 184202379Srdivacky ioapic_set_polarity(ioapic, pin, INTR_POLARITY_LOW); 185202379Srdivacky ioapic_set_triggermode(ioapic, pin, INTR_TRIGGER_LEVEL); 186202379Srdivacky } 187208600Srdivacky } 188202379Srdivacky 189202379Srdivacky /* Third, we register all the I/O APIC's. */ 190202379Srdivacky for (i = 0; i <= MAX_APIC_ID; i++) 191202379Srdivacky if (ioapics[i].io_apic != NULL) 192202379Srdivacky ioapic_register(ioapics[i].io_apic); 193202379Srdivacky 194202879Srdivacky /* Finally, we throw the switch to enable the I/O APIC's. */ 195202879Srdivacky acpi_SetDefaultIntrModel(ACPI_INTR_APIC); 196202879Srdivacky 197202879Srdivacky free(ioapics, M_MADT); 198202879Srdivacky ioapics = NULL; 199235633Sdim 200235633Sdim return (0); 201235633Sdim} 202235633Sdim 203235633Sdimstatic void 204235633Sdimmadt_register(void *dummy __unused) 205235633Sdim{ 206235633Sdim 207235633Sdim apic_register_enumerator(&madt_enumerator); 208235633Sdim} 209235633SdimSYSINIT(madt_register, SI_SUB_TUNABLES - 1, SI_ORDER_FIRST, madt_register, NULL); 210235633Sdim 211235633Sdim/* 212235633Sdim * Call the handler routine for each entry in the MADT table. 213235633Sdim */ 214235633Sdimstatic void 215235633Sdimmadt_walk_table(acpi_subtable_handler *handler, void *arg) 216235633Sdim{ 217235633Sdim 218235633Sdim acpi_walk_subtables(madt + 1, (char *)madt + madt->Header.Length, 219235633Sdim handler, arg); 220235633Sdim} 221235633Sdim 222235633Sdimstatic void 223235633Sdimmadt_probe_cpus_handler(ACPI_SUBTABLE_HEADER *entry, void *arg) 224235633Sdim{ 225235633Sdim ACPI_MADT_LOCAL_APIC *proc; 226235633Sdim struct lapic_info *la; 227235633Sdim 228235633Sdim switch (entry->Type) { 229235633Sdim case ACPI_MADT_TYPE_LOCAL_APIC: 230235633Sdim /* 231235633Sdim * The MADT does not include a BSP flag, so we have to 232235633Sdim * let the MP code figure out which CPU is the BSP on 233235633Sdim * its own. 234235633Sdim */ 235235633Sdim proc = (ACPI_MADT_LOCAL_APIC *)entry; 236235633Sdim if (bootverbose) 237235633Sdim printf("MADT: Found CPU APIC ID %u ACPI ID %u: %s\n", 238235633Sdim proc->Id, proc->ProcessorId, 239235633Sdim (proc->LapicFlags & ACPI_MADT_ENABLED) ? 240235633Sdim "enabled" : "disabled"); 241235633Sdim if (!(proc->LapicFlags & ACPI_MADT_ENABLED)) 242235633Sdim break; 243235633Sdim if (proc->Id > MAX_APIC_ID) 244235633Sdim panic("%s: CPU ID %u too high", __func__, proc->Id); 245218893Sdim la = &lapics[proc->Id]; 246235633Sdim KASSERT(la->la_enabled == 0, 247202879Srdivacky ("Duplicate local APIC ID %u", proc->Id)); 248218893Sdim la->la_enabled = 1; 249218893Sdim la->la_acpi_id = proc->ProcessorId; 250218893Sdim lapic_create(proc->Id, 0); 251218893Sdim break; 252218893Sdim } 253218893Sdim} 254218893Sdim 255221345Sdim 256221345Sdim/* 257235633Sdim * Add an I/O APIC from an entry in the table. 258221345Sdim */ 259221345Sdimstatic void 260221345Sdimmadt_parse_apics(ACPI_SUBTABLE_HEADER *entry, void *arg __unused) 261221345Sdim{ 262221345Sdim ACPI_MADT_IO_APIC *apic; 263221345Sdim 264221345Sdim switch (entry->Type) { 265235633Sdim case ACPI_MADT_TYPE_IO_APIC: 266221345Sdim apic = (ACPI_MADT_IO_APIC *)entry; 267221345Sdim if (bootverbose) 268221345Sdim printf( 269221345Sdim "MADT: Found IO APIC ID %u, Interrupt %u at %p\n", 270221345Sdim apic->Id, apic->GlobalIrqBase, 271221345Sdim (void *)(uintptr_t)apic->Address); 272235633Sdim if (apic->Id > MAX_APIC_ID) 273235633Sdim panic("%s: I/O APIC ID %u too high", __func__, 274221345Sdim apic->Id); 275235633Sdim if (ioapics[apic->Id].io_apic != NULL) 276221345Sdim panic("%s: Double APIC ID %u", __func__, apic->Id); 277221345Sdim if (apic->GlobalIrqBase >= FIRST_MSI_INT) { 278221345Sdim printf("MADT: Ignoring bogus I/O APIC ID %u", apic->Id); 279221345Sdim break; 280221345Sdim } 281221345Sdim ioapics[apic->Id].io_apic = ioapic_create(apic->Address, 282221345Sdim apic->Id, apic->GlobalIrqBase); 283235633Sdim ioapics[apic->Id].io_vector = apic->GlobalIrqBase; 284235633Sdim break; 285221345Sdim default: 286221345Sdim break; 287221345Sdim } 288221345Sdim} 289221345Sdim 290221345Sdim/* 291221345Sdim * Determine properties of an interrupt source. Note that for ACPI these 292218893Sdim * functions are only used for ISA interrupts, so we assume ISA bus values 293218893Sdim * (Active Hi, Edge Triggered) for conforming values except for the ACPI 294218893Sdim * SCI for which we use Active Lo, Level Triggered. 295218893Sdim */ 296218893Sdimstatic enum intr_polarity 297218893Sdiminterrupt_polarity(UINT16 IntiFlags, UINT8 Source) 298218893Sdim{ 299218893Sdim 300218893Sdim switch (IntiFlags & ACPI_MADT_POLARITY_MASK) { 301218893Sdim case ACPI_MADT_POLARITY_CONFORMS: 302218893Sdim if (Source == AcpiGbl_FADT.SciInterrupt) 303218893Sdim return (INTR_POLARITY_LOW); 304235633Sdim else 305218893Sdim return (INTR_POLARITY_HIGH); 306218893Sdim case ACPI_MADT_POLARITY_ACTIVE_HIGH: 307218893Sdim return (INTR_POLARITY_HIGH); 308218893Sdim case ACPI_MADT_POLARITY_ACTIVE_LOW: 309218893Sdim return (INTR_POLARITY_LOW); 310218893Sdim default: 311218893Sdim panic("Bogus Interrupt Polarity"); 312218893Sdim } 313218893Sdim} 314221345Sdim 315221345Sdimstatic enum intr_trigger 316221345Sdiminterrupt_trigger(UINT16 IntiFlags, UINT8 Source) 317221345Sdim{ 318221345Sdim 319221345Sdim switch (IntiFlags & ACPI_MADT_TRIGGER_MASK) { 320221345Sdim case ACPI_MADT_TRIGGER_CONFORMS: 321218893Sdim if (Source == AcpiGbl_FADT.SciInterrupt) 322221345Sdim return (INTR_TRIGGER_LEVEL); 323221345Sdim else 324221345Sdim return (INTR_TRIGGER_EDGE); 325221345Sdim case ACPI_MADT_TRIGGER_EDGE: 326221345Sdim return (INTR_TRIGGER_EDGE); 327221345Sdim case ACPI_MADT_TRIGGER_LEVEL: 328218893Sdim return (INTR_TRIGGER_LEVEL); 329221345Sdim default: 330218893Sdim panic("Bogus Interrupt Trigger Mode"); 331218893Sdim } 332218893Sdim} 333 334/* 335 * Find the local APIC ID associated with a given ACPI Processor ID. 336 */ 337static int 338madt_find_cpu(u_int acpi_id, u_int *apic_id) 339{ 340 int i; 341 342 for (i = 0; i <= MAX_APIC_ID; i++) { 343 if (!lapics[i].la_enabled) 344 continue; 345 if (lapics[i].la_acpi_id != acpi_id) 346 continue; 347 *apic_id = i; 348 return (0); 349 } 350 return (ENOENT); 351} 352 353/* 354 * Find the IO APIC and pin on that APIC associated with a given global 355 * interrupt. 356 */ 357static int 358madt_find_interrupt(int intr, void **apic, u_int *pin) 359{ 360 int i, best; 361 362 best = -1; 363 for (i = 0; i <= MAX_APIC_ID; i++) { 364 if (ioapics[i].io_apic == NULL || 365 ioapics[i].io_vector > intr) 366 continue; 367 if (best == -1 || 368 ioapics[best].io_vector < ioapics[i].io_vector) 369 best = i; 370 } 371 if (best == -1) 372 return (ENOENT); 373 *apic = ioapics[best].io_apic; 374 *pin = intr - ioapics[best].io_vector; 375 if (*pin > 32) 376 printf("WARNING: Found intpin of %u for vector %d\n", *pin, 377 intr); 378 return (0); 379} 380 381/* 382 * Parse an interrupt source override for an ISA interrupt. 383 */ 384static void 385madt_parse_interrupt_override(ACPI_MADT_INTERRUPT_OVERRIDE *intr) 386{ 387 void *new_ioapic, *old_ioapic; 388 u_int new_pin, old_pin; 389 enum intr_trigger trig; 390 enum intr_polarity pol; 391 char buf[64]; 392 393 if (acpi_quirks & ACPI_Q_MADT_IRQ0 && intr->SourceIrq == 0 && 394 intr->GlobalIrq == 2) { 395 if (bootverbose) 396 printf("MADT: Skipping timer override\n"); 397 return; 398 } 399 if (bootverbose) 400 printf("MADT: Interrupt override: source %u, irq %u\n", 401 intr->SourceIrq, intr->GlobalIrq); 402 KASSERT(intr->Bus == 0, ("bus for interrupt overrides must be zero")); 403 if (madt_find_interrupt(intr->GlobalIrq, &new_ioapic, &new_pin) != 0) { 404 printf("MADT: Could not find APIC for vector %u (IRQ %u)\n", 405 intr->GlobalIrq, intr->SourceIrq); 406 return; 407 } 408 409 /* 410 * Lookup the appropriate trigger and polarity modes for this 411 * entry. 412 */ 413 trig = interrupt_trigger(intr->IntiFlags, intr->SourceIrq); 414 pol = interrupt_polarity(intr->IntiFlags, intr->SourceIrq); 415 416 /* 417 * If the SCI is identity mapped but has edge trigger and 418 * active-hi polarity or the force_sci_lo tunable is set, 419 * force it to use level/lo. 420 */ 421 if (intr->SourceIrq == AcpiGbl_FADT.SciInterrupt) { 422 madt_found_sci_override = 1; 423 if (getenv_string("hw.acpi.sci.trigger", buf, sizeof(buf))) { 424 if (tolower(buf[0]) == 'e') 425 trig = INTR_TRIGGER_EDGE; 426 else if (tolower(buf[0]) == 'l') 427 trig = INTR_TRIGGER_LEVEL; 428 else 429 panic( 430 "Invalid trigger %s: must be 'edge' or 'level'", 431 buf); 432 printf("MADT: Forcing SCI to %s trigger\n", 433 trig == INTR_TRIGGER_EDGE ? "edge" : "level"); 434 } 435 if (getenv_string("hw.acpi.sci.polarity", buf, sizeof(buf))) { 436 if (tolower(buf[0]) == 'h') 437 pol = INTR_POLARITY_HIGH; 438 else if (tolower(buf[0]) == 'l') 439 pol = INTR_POLARITY_LOW; 440 else 441 panic( 442 "Invalid polarity %s: must be 'high' or 'low'", 443 buf); 444 printf("MADT: Forcing SCI to active %s polarity\n", 445 pol == INTR_POLARITY_HIGH ? "high" : "low"); 446 } 447 } 448 449 /* Remap the IRQ if it is mapped to a different interrupt vector. */ 450 if (intr->SourceIrq != intr->GlobalIrq) { 451 /* 452 * If the SCI is remapped to a non-ISA global interrupt, 453 * then override the vector we use to setup and allocate 454 * the interrupt. 455 */ 456 if (intr->GlobalIrq > 15 && 457 intr->SourceIrq == AcpiGbl_FADT.SciInterrupt) 458 acpi_OverrideInterruptLevel(intr->GlobalIrq); 459 else 460 ioapic_remap_vector(new_ioapic, new_pin, 461 intr->SourceIrq); 462 if (madt_find_interrupt(intr->SourceIrq, &old_ioapic, 463 &old_pin) != 0) 464 printf("MADT: Could not find APIC for source IRQ %u\n", 465 intr->SourceIrq); 466 else if (ioapic_get_vector(old_ioapic, old_pin) == 467 intr->SourceIrq) 468 ioapic_disable_pin(old_ioapic, old_pin); 469 } 470 471 /* Program the polarity and trigger mode. */ 472 ioapic_set_triggermode(new_ioapic, new_pin, trig); 473 ioapic_set_polarity(new_ioapic, new_pin, pol); 474} 475 476/* 477 * Parse an entry for an NMI routed to an IO APIC. 478 */ 479static void 480madt_parse_nmi(ACPI_MADT_NMI_SOURCE *nmi) 481{ 482 void *ioapic; 483 u_int pin; 484 485 if (madt_find_interrupt(nmi->GlobalIrq, &ioapic, &pin) != 0) { 486 printf("MADT: Could not find APIC for vector %u\n", 487 nmi->GlobalIrq); 488 return; 489 } 490 491 ioapic_set_nmi(ioapic, pin); 492 if (!(nmi->IntiFlags & ACPI_MADT_TRIGGER_CONFORMS)) 493 ioapic_set_triggermode(ioapic, pin, 494 interrupt_trigger(nmi->IntiFlags, 0)); 495 if (!(nmi->IntiFlags & ACPI_MADT_TRIGGER_CONFORMS)) 496 ioapic_set_polarity(ioapic, pin, 497 interrupt_polarity(nmi->IntiFlags, 0)); 498} 499 500/* 501 * Parse an entry for an NMI routed to a local APIC LVT pin. 502 */ 503static void 504madt_parse_local_nmi(ACPI_MADT_LOCAL_APIC_NMI *nmi) 505{ 506 u_int apic_id, pin; 507 508 if (nmi->ProcessorId == 0xff) 509 apic_id = APIC_ID_ALL; 510 else if (madt_find_cpu(nmi->ProcessorId, &apic_id) != 0) { 511 if (bootverbose) 512 printf("MADT: Ignoring local NMI routed to " 513 "ACPI CPU %u\n", nmi->ProcessorId); 514 return; 515 } 516 if (nmi->Lint == 0) 517 pin = APIC_LVT_LINT0; 518 else 519 pin = APIC_LVT_LINT1; 520 lapic_set_lvt_mode(apic_id, pin, APIC_LVT_DM_NMI); 521 if (!(nmi->IntiFlags & ACPI_MADT_TRIGGER_CONFORMS)) 522 lapic_set_lvt_triggermode(apic_id, pin, 523 interrupt_trigger(nmi->IntiFlags, 0)); 524 if (!(nmi->IntiFlags & ACPI_MADT_POLARITY_CONFORMS)) 525 lapic_set_lvt_polarity(apic_id, pin, 526 interrupt_polarity(nmi->IntiFlags, 0)); 527} 528 529/* 530 * Parse interrupt entries. 531 */ 532static void 533madt_parse_ints(ACPI_SUBTABLE_HEADER *entry, void *arg __unused) 534{ 535 536 switch (entry->Type) { 537 case ACPI_MADT_TYPE_INTERRUPT_OVERRIDE: 538 madt_parse_interrupt_override( 539 (ACPI_MADT_INTERRUPT_OVERRIDE *)entry); 540 break; 541 case ACPI_MADT_TYPE_NMI_SOURCE: 542 madt_parse_nmi((ACPI_MADT_NMI_SOURCE *)entry); 543 break; 544 case ACPI_MADT_TYPE_LOCAL_APIC_NMI: 545 madt_parse_local_nmi((ACPI_MADT_LOCAL_APIC_NMI *)entry); 546 break; 547 } 548} 549 550/* 551 * Setup per-CPU ACPI IDs. 552 */ 553static void 554madt_set_ids(void *dummy) 555{ 556 struct lapic_info *la; 557 struct pcpu *pc; 558 u_int i; 559 560 if (madt == NULL) 561 return; 562 CPU_FOREACH(i) { 563 pc = pcpu_find(i); 564 KASSERT(pc != NULL, ("no pcpu data for CPU %u", i)); 565 la = &lapics[pc->pc_apic_id]; 566 if (!la->la_enabled) 567 panic("APIC: CPU with APIC ID %u is not enabled", 568 pc->pc_apic_id); 569 pc->pc_acpi_id = la->la_acpi_id; 570 if (bootverbose) 571 printf("APIC: CPU %u has ACPI ID %u\n", i, 572 la->la_acpi_id); 573 } 574} 575SYSINIT(madt_set_ids, SI_SUB_CPU, SI_ORDER_MIDDLE, madt_set_ids, NULL); 576