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:1; 60 u_int la_acpi_id:8; 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 u_int p[4]; 136 137 madt = pmap_mapbios(madt_physaddr, madt_length); 138 if ((cpu_feature2 & CPUID2_X2APIC) != 0) { 139 x2apic_mode = 1; 140 dmartbl_physaddr = acpi_find_table(ACPI_SIG_DMAR); 141 if (dmartbl_physaddr != 0) { 142 dmartbl = acpi_map_table(dmartbl_physaddr, 143 ACPI_SIG_DMAR); 144 if ((dmartbl->Flags & ACPI_DMAR_X2APIC_OPT_OUT) != 0) { 145 x2apic_mode = 0; 146 if (bootverbose) 147 printf( 148 "x2APIC available but disabled by DMAR table\n"); 149 } 150 acpi_unmap_table(dmartbl); 151 } 152 if (vm_guest == VM_GUEST_VMWARE) { 153 vmware_hvcall(VMW_HVCMD_GETVCPU_INFO, p); 154 if ((p[0] & VMW_VCPUINFO_VCPU_RESERVED) != 0 || 155 (p[0] & VMW_VCPUINFO_LEGACY_X2APIC) == 0) { 156 x2apic_mode = 0; 157 if (bootverbose) 158 printf( 159 "x2APIC available but disabled inside VMWare without intr redirection\n"); 160 } 161 } else if (vm_guest == VM_GUEST_XEN) { 162 x2apic_mode = 0; 163 } 164 TUNABLE_INT_FETCH("hw.x2apic_enable", &x2apic_mode); 165 } 166 167 lapic_init(madt->Address); 168 printf("ACPI APIC Table: <%.*s %.*s>\n", 169 (int)sizeof(madt->Header.OemId), madt->Header.OemId, 170 (int)sizeof(madt->Header.OemTableId), madt->Header.OemTableId); 171 172 /* 173 * We ignore 64-bit local APIC override entries. Should we 174 * perhaps emit a warning here if we find one? 175 */ 176 return (0); 177 } 178 179 /* 180 * Enumerate I/O APICs and setup interrupt sources. 181 */ 182 static int 183 madt_setup_io(void) 184 { 185 void *ioapic; 186 u_int pin; 187 int i; 188 189 /* Try to initialize ACPI so that we can access the FADT. */ 190 i = acpi_Startup(); 191 if (ACPI_FAILURE(i)) { 192 printf("MADT: ACPI Startup failed with %s\n", 193 AcpiFormatException(i)); 194 printf("Try disabling either ACPI or apic support.\n"); 195 panic("Using MADT but ACPI doesn't work"); 196 } 197 198 ioapics = malloc(sizeof(*ioapics) * (MAX_APIC_ID + 1), M_MADT, 199 M_WAITOK | M_ZERO); 200 201 /* First, we run through adding I/O APIC's. */ 202 madt_walk_table(madt_parse_apics, NULL); 203 204 /* Second, we run through the table tweaking interrupt sources. */ 205 madt_walk_table(madt_parse_ints, NULL); 206 207 /* 208 * If there was not an explicit override entry for the SCI, 209 * force it to use level trigger and active-low polarity. 210 */ 211 if (!madt_found_sci_override) { 212 if (madt_find_interrupt(AcpiGbl_FADT.SciInterrupt, &ioapic, 213 &pin) != 0) 214 printf("MADT: Could not find APIC for SCI IRQ %u\n", 215 AcpiGbl_FADT.SciInterrupt); 216 else { 217 printf( 218 "MADT: Forcing active-low polarity and level trigger for SCI\n"); 219 ioapic_set_polarity(ioapic, pin, INTR_POLARITY_LOW); 220 ioapic_set_triggermode(ioapic, pin, INTR_TRIGGER_LEVEL); 221 } 222 } 223 224 /* Third, we register all the I/O APIC's. */ 225 for (i = 0; i <= MAX_APIC_ID; i++) 226 if (ioapics[i].io_apic != NULL) 227 ioapic_register(ioapics[i].io_apic); 228 229 /* Finally, we throw the switch to enable the I/O APIC's. */ 230 acpi_SetDefaultIntrModel(ACPI_INTR_APIC); 231 232 free(ioapics, M_MADT); 233 ioapics = NULL; 234 235 return (0); 236 } 237 238 static void 239 madt_register(void *dummy __unused) 240 { 241 242 apic_register_enumerator(&madt_enumerator); 243 } 244 SYSINIT(madt_register, SI_SUB_TUNABLES - 1, SI_ORDER_FIRST, madt_register, NULL); 245 246 /* 247 * Call the handler routine for each entry in the MADT table. 248 */ 249 static void 250 madt_walk_table(acpi_subtable_handler *handler, void *arg) 251 { 252 253 acpi_walk_subtables(madt + 1, (char *)madt + madt->Header.Length, 254 handler, arg); 255 } 256 257 static void 258 madt_probe_cpus_handler(ACPI_SUBTABLE_HEADER *entry, void *arg) 259 { 260 ACPI_MADT_LOCAL_APIC *proc; 261 struct lapic_info *la; 262 263 switch (entry->Type) { 264 case ACPI_MADT_TYPE_LOCAL_APIC: 265 /* 266 * The MADT does not include a BSP flag, so we have to 267 * let the MP code figure out which CPU is the BSP on 268 * its own. 269 */ 270 proc = (ACPI_MADT_LOCAL_APIC *)entry; 271 if (bootverbose) 272 printf("MADT: Found CPU APIC ID %u ACPI ID %u: %s\n", 273 proc->Id, proc->ProcessorId, 274 (proc->LapicFlags & ACPI_MADT_ENABLED) ? 275 "enabled" : "disabled"); 276 if (!(proc->LapicFlags & ACPI_MADT_ENABLED)) 277 break; 278 if (proc->Id > MAX_APIC_ID) 279 panic("%s: CPU ID %u too high", __func__, proc->Id); 280 la = &lapics[proc->Id]; 281 KASSERT(la->la_enabled == 0, 282 ("Duplicate local APIC ID %u", proc->Id)); 283 la->la_enabled = 1; 284 la->la_acpi_id = proc->ProcessorId; 285 lapic_create(proc->Id, 0); 286 break; 287 } 288 } 289 290 291 /* 292 * Add an I/O APIC from an entry in the table. 293 */ 294 static void 295 madt_parse_apics(ACPI_SUBTABLE_HEADER *entry, void *arg __unused) 296 { 297 ACPI_MADT_IO_APIC *apic; 298 299 switch (entry->Type) { 300 case ACPI_MADT_TYPE_IO_APIC: 301 apic = (ACPI_MADT_IO_APIC *)entry; 302 if (bootverbose) 303 printf( 304 "MADT: Found IO APIC ID %u, Interrupt %u at %p\n", 305 apic->Id, apic->GlobalIrqBase, 306 (void *)(uintptr_t)apic->Address); 307 if (apic->Id > MAX_APIC_ID) 308 panic("%s: I/O APIC ID %u too high", __func__, 309 apic->Id); 310 if (ioapics[apic->Id].io_apic != NULL) 311 panic("%s: Double APIC ID %u", __func__, apic->Id); 312 if (apic->GlobalIrqBase >= FIRST_MSI_INT) { 313 printf("MADT: Ignoring bogus I/O APIC ID %u", apic->Id); 314 break; 315 } 316 ioapics[apic->Id].io_apic = ioapic_create(apic->Address, 317 apic->Id, apic->GlobalIrqBase); 318 ioapics[apic->Id].io_vector = apic->GlobalIrqBase; 319 break; 320 default: 321 break; 322 } 323 } 324 325 /* 326 * Determine properties of an interrupt source. Note that for ACPI these 327 * functions are only used for ISA interrupts, so we assume ISA bus values 328 * (Active Hi, Edge Triggered) for conforming values except for the ACPI 329 * SCI for which we use Active Lo, Level Triggered. 330 */ 331 static enum intr_polarity 332 interrupt_polarity(UINT16 IntiFlags, UINT8 Source) 333 { 334 335 switch (IntiFlags & ACPI_MADT_POLARITY_MASK) { 336 default: 337 printf("WARNING: Bogus Interrupt Polarity. Assume CONFORMS\n"); 338 /* FALLTHROUGH*/ 339 case ACPI_MADT_POLARITY_CONFORMS: 340 if (Source == AcpiGbl_FADT.SciInterrupt) 341 return (INTR_POLARITY_LOW); 342 else 343 return (INTR_POLARITY_HIGH); 344 case ACPI_MADT_POLARITY_ACTIVE_HIGH: 345 return (INTR_POLARITY_HIGH); 346 case ACPI_MADT_POLARITY_ACTIVE_LOW: 347 return (INTR_POLARITY_LOW); 348 } 349 } 350 351 static enum intr_trigger 352 interrupt_trigger(UINT16 IntiFlags, UINT8 Source) 353 { 354 355 switch (IntiFlags & ACPI_MADT_TRIGGER_MASK) { 356 default: 357 printf("WARNING: Bogus Interrupt Trigger Mode. Assume CONFORMS.\n"); 358 /*FALLTHROUGH*/ 359 case ACPI_MADT_TRIGGER_CONFORMS: 360 if (Source == AcpiGbl_FADT.SciInterrupt) 361 return (INTR_TRIGGER_LEVEL); 362 else 363 return (INTR_TRIGGER_EDGE); 364 case ACPI_MADT_TRIGGER_EDGE: 365 return (INTR_TRIGGER_EDGE); 366 case ACPI_MADT_TRIGGER_LEVEL: 367 return (INTR_TRIGGER_LEVEL); 368 } 369 } 370 371 /* 372 * Find the local APIC ID associated with a given ACPI Processor ID. 373 */ 374 static int 375 madt_find_cpu(u_int acpi_id, u_int *apic_id) 376 { 377 int i; 378 379 for (i = 0; i <= MAX_APIC_ID; i++) { 380 if (!lapics[i].la_enabled) 381 continue; 382 if (lapics[i].la_acpi_id != acpi_id) 383 continue; 384 *apic_id = i; 385 return (0); 386 } 387 return (ENOENT); 388 } 389 390 /* 391 * Find the IO APIC and pin on that APIC associated with a given global 392 * interrupt. 393 */ 394 static int 395 madt_find_interrupt(int intr, void **apic, u_int *pin) 396 { 397 int i, best; 398 399 best = -1; 400 for (i = 0; i <= MAX_APIC_ID; i++) { 401 if (ioapics[i].io_apic == NULL || 402 ioapics[i].io_vector > intr) 403 continue; 404 if (best == -1 || 405 ioapics[best].io_vector < ioapics[i].io_vector) 406 best = i; 407 } 408 if (best == -1) 409 return (ENOENT); 410 *apic = ioapics[best].io_apic; 411 *pin = intr - ioapics[best].io_vector; 412 if (*pin > 32) 413 printf("WARNING: Found intpin of %u for vector %d\n", *pin, 414 intr); 415 return (0); 416 } 417 418 void 419 madt_parse_interrupt_values(void *entry, 420 enum intr_trigger *trig, enum intr_polarity *pol) 421 { 422 ACPI_MADT_INTERRUPT_OVERRIDE *intr; 423 char buf[64]; 424 425 intr = entry; 426 427 if (bootverbose) 428 printf("MADT: Interrupt override: source %u, irq %u\n", 429 intr->SourceIrq, intr->GlobalIrq); 430 KASSERT(intr->Bus == 0, ("bus for interrupt overrides must be zero")); 431 432 /* 433 * Lookup the appropriate trigger and polarity modes for this 434 * entry. 435 */ 436 *trig = interrupt_trigger(intr->IntiFlags, intr->SourceIrq); 437 *pol = interrupt_polarity(intr->IntiFlags, intr->SourceIrq); 438 439 /* 440 * If the SCI is identity mapped but has edge trigger and 441 * active-hi polarity or the force_sci_lo tunable is set, 442 * force it to use level/lo. 443 */ 444 if (intr->SourceIrq == AcpiGbl_FADT.SciInterrupt) { 445 madt_found_sci_override = 1; 446 if (getenv_string("hw.acpi.sci.trigger", buf, sizeof(buf))) { 447 if (tolower(buf[0]) == 'e') 448 *trig = INTR_TRIGGER_EDGE; 449 else if (tolower(buf[0]) == 'l') 450 *trig = INTR_TRIGGER_LEVEL; 451 else 452 panic( 453 "Invalid trigger %s: must be 'edge' or 'level'", 454 buf); 455 printf("MADT: Forcing SCI to %s trigger\n", 456 *trig == INTR_TRIGGER_EDGE ? "edge" : "level"); 457 } 458 if (getenv_string("hw.acpi.sci.polarity", buf, sizeof(buf))) { 459 if (tolower(buf[0]) == 'h') 460 *pol = INTR_POLARITY_HIGH; 461 else if (tolower(buf[0]) == 'l') 462 *pol = INTR_POLARITY_LOW; 463 else 464 panic( 465 "Invalid polarity %s: must be 'high' or 'low'", 466 buf); 467 printf("MADT: Forcing SCI to active %s polarity\n", 468 *pol == INTR_POLARITY_HIGH ? "high" : "low"); 469 } 470 } 471 } 472 473 /* 474 * Parse an interrupt source override for an ISA interrupt. 475 */ 476 static void 477 madt_parse_interrupt_override(ACPI_MADT_INTERRUPT_OVERRIDE *intr) 478 { 479 void *new_ioapic, *old_ioapic; 480 u_int new_pin, old_pin; 481 enum intr_trigger trig; 482 enum intr_polarity pol; 483 484 if (acpi_quirks & ACPI_Q_MADT_IRQ0 && intr->SourceIrq == 0 && 485 intr->GlobalIrq == 2) { 486 if (bootverbose) 487 printf("MADT: Skipping timer override\n"); 488 return; 489 } 490 491 if (madt_find_interrupt(intr->GlobalIrq, &new_ioapic, &new_pin) != 0) { 492 printf("MADT: Could not find APIC for vector %u (IRQ %u)\n", 493 intr->GlobalIrq, intr->SourceIrq); 494 return; 495 } 496 497 madt_parse_interrupt_values(intr, &trig, &pol); 498 499 /* Remap the IRQ if it is mapped to a different interrupt vector. */ 500 if (intr->SourceIrq != intr->GlobalIrq) { 501 /* 502 * If the SCI is remapped to a non-ISA global interrupt, 503 * then override the vector we use to setup and allocate 504 * the interrupt. 505 */ 506 if (intr->GlobalIrq > 15 && 507 intr->SourceIrq == AcpiGbl_FADT.SciInterrupt) 508 acpi_OverrideInterruptLevel(intr->GlobalIrq); 509 else 510 ioapic_remap_vector(new_ioapic, new_pin, 511 intr->SourceIrq); 512 if (madt_find_interrupt(intr->SourceIrq, &old_ioapic, 513 &old_pin) != 0) 514 printf("MADT: Could not find APIC for source IRQ %u\n", 515 intr->SourceIrq); 516 else if (ioapic_get_vector(old_ioapic, old_pin) == 517 intr->SourceIrq) 518 ioapic_disable_pin(old_ioapic, old_pin); 519 } 520 521 /* Program the polarity and trigger mode. */ 522 ioapic_set_triggermode(new_ioapic, new_pin, trig); 523 ioapic_set_polarity(new_ioapic, new_pin, pol); 524 } 525 526 /* 527 * Parse an entry for an NMI routed to an IO APIC. 528 */ 529 static void 530 madt_parse_nmi(ACPI_MADT_NMI_SOURCE *nmi) 531 { 532 void *ioapic; 533 u_int pin; 534 535 if (madt_find_interrupt(nmi->GlobalIrq, &ioapic, &pin) != 0) { 536 printf("MADT: Could not find APIC for vector %u\n", 537 nmi->GlobalIrq); 538 return; 539 } 540 541 ioapic_set_nmi(ioapic, pin); 542 if (!(nmi->IntiFlags & ACPI_MADT_TRIGGER_CONFORMS)) 543 ioapic_set_triggermode(ioapic, pin, 544 interrupt_trigger(nmi->IntiFlags, 0)); 545 if (!(nmi->IntiFlags & ACPI_MADT_POLARITY_CONFORMS)) 546 ioapic_set_polarity(ioapic, pin, 547 interrupt_polarity(nmi->IntiFlags, 0)); 548 } 549 550 /* 551 * Parse an entry for an NMI routed to a local APIC LVT pin. 552 */ 553 static void 554 madt_parse_local_nmi(ACPI_MADT_LOCAL_APIC_NMI *nmi) 555 { 556 u_int apic_id, pin; 557 558 if (nmi->ProcessorId == 0xff) 559 apic_id = APIC_ID_ALL; 560 else if (madt_find_cpu(nmi->ProcessorId, &apic_id) != 0) { 561 if (bootverbose) 562 printf("MADT: Ignoring local NMI routed to " 563 "ACPI CPU %u\n", nmi->ProcessorId); 564 return; 565 } 566 if (nmi->Lint == 0) 567 pin = APIC_LVT_LINT0; 568 else 569 pin = APIC_LVT_LINT1; 570 lapic_set_lvt_mode(apic_id, pin, APIC_LVT_DM_NMI); 571 if (!(nmi->IntiFlags & ACPI_MADT_TRIGGER_CONFORMS)) 572 lapic_set_lvt_triggermode(apic_id, pin, 573 interrupt_trigger(nmi->IntiFlags, 0)); 574 if (!(nmi->IntiFlags & ACPI_MADT_POLARITY_CONFORMS)) 575 lapic_set_lvt_polarity(apic_id, pin, 576 interrupt_polarity(nmi->IntiFlags, 0)); 577 } 578 579 /* 580 * Parse interrupt entries. 581 */ 582 static void 583 madt_parse_ints(ACPI_SUBTABLE_HEADER *entry, void *arg __unused) 584 { 585 586 switch (entry->Type) { 587 case ACPI_MADT_TYPE_INTERRUPT_OVERRIDE: 588 madt_parse_interrupt_override( 589 (ACPI_MADT_INTERRUPT_OVERRIDE *)entry); 590 break; 591 case ACPI_MADT_TYPE_NMI_SOURCE: 592 madt_parse_nmi((ACPI_MADT_NMI_SOURCE *)entry); 593 break; 594 case ACPI_MADT_TYPE_LOCAL_APIC_NMI: 595 madt_parse_local_nmi((ACPI_MADT_LOCAL_APIC_NMI *)entry); 596 break; 597 } 598 } 599 600 /* 601 * Setup per-CPU ACPI IDs. 602 */ 603 static void 604 madt_set_ids(void *dummy) 605 { 606 struct lapic_info *la; 607 struct pcpu *pc; 608 u_int i; 609 610 if (madt == NULL) 611 return; 612 CPU_FOREACH(i) { 613 pc = pcpu_find(i); 614 KASSERT(pc != NULL, ("no pcpu data for CPU %u", i)); 615 la = &lapics[pc->pc_apic_id]; 616 if (!la->la_enabled) 617 panic("APIC: CPU with APIC ID %u is not enabled", 618 pc->pc_apic_id); 619 pc->pc_acpi_id = la->la_acpi_id; 620 if (bootverbose) 621 printf("APIC: CPU %u has ACPI ID %u\n", i, 622 la->la_acpi_id); 623 } 624 } 625 SYSINIT(madt_set_ids, SI_SUB_CPU, SI_ORDER_MIDDLE, madt_set_ids, NULL); 626