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sys/i386/acpica/madt.c
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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 * 3. Neither the name of the author nor the names of any co-contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 #include <sys/cdefs.h> 31 __FBSDID("$FreeBSD: releng/6.3/sys/i386/acpica/madt.c 172452 2007-10-05 15:22:37Z jhb $"); 32 33 #include <sys/param.h> 34 #include <sys/systm.h> 35 #include <sys/bus.h> 36 #include <sys/kernel.h> 37 #include <sys/malloc.h> 38 #include <sys/smp.h> 39 40 #include <vm/vm.h> 41 #include <vm/vm_param.h> 42 #include <vm/pmap.h> 43 44 #include <machine/apicreg.h> 45 #include <machine/frame.h> 46 #include <machine/intr_machdep.h> 47 #include <machine/apicvar.h> 48 #include <machine/md_var.h> 49 #include <machine/specialreg.h> 50 51 #include <contrib/dev/acpica/acpi.h> 52 #include <contrib/dev/acpica/actables.h> 53 #include <dev/acpica/acpivar.h> 54 #include <dev/pci/pcivar.h> 55 56 typedef void madt_entry_handler(APIC_HEADER *entry, void *arg); 57 58 /* These two arrays are indexed by APIC IDs. */ 59 struct ioapic_info { 60 void *io_apic; 61 UINT32 io_vector; 62 } ioapics[MAX_APIC_ID + 1]; 63 64 struct lapic_info { 65 u_int la_enabled:1; 66 u_int la_acpi_id:8; 67 } lapics[MAX_APIC_ID + 1]; 68 69 static int madt_found_sci_override; 70 static MULTIPLE_APIC_TABLE *madt; 71 static vm_paddr_t madt_physaddr; 72 static vm_offset_t madt_length; 73 74 MALLOC_DEFINE(M_MADT, "MADT Table", "ACPI MADT Table Items"); 75 76 static enum intr_polarity interrupt_polarity(UINT16 Polarity, UINT8 Source); 77 static enum intr_trigger interrupt_trigger(UINT16 TriggerMode, UINT8 Source); 78 static int madt_find_cpu(u_int acpi_id, u_int *apic_id); 79 static int madt_find_interrupt(int intr, void **apic, u_int *pin); 80 static void *madt_map(vm_paddr_t pa, int offset, vm_offset_t length); 81 static void *madt_map_table(vm_paddr_t pa, int offset, const char *sig); 82 static void madt_parse_apics(APIC_HEADER *entry, void *arg); 83 static void madt_parse_interrupt_override(MADT_INTERRUPT_OVERRIDE *intr); 84 static void madt_parse_ints(APIC_HEADER *entry, void *arg __unused); 85 static void madt_parse_local_nmi(MADT_LOCAL_APIC_NMI *nmi); 86 static void madt_parse_nmi(MADT_NMI_SOURCE *nmi); 87 static int madt_probe(void); 88 static int madt_probe_cpus(void); 89 static void madt_probe_cpus_handler(APIC_HEADER *entry, void *arg __unused); 90 static int madt_probe_table(vm_paddr_t address); 91 static void madt_register(void *dummy); 92 static int madt_setup_local(void); 93 static int madt_setup_io(void); 94 static void madt_unmap(void *data, vm_offset_t length); 95 static void madt_unmap_table(void *table); 96 static void madt_walk_table(madt_entry_handler *handler, void *arg); 97 98 static struct apic_enumerator madt_enumerator = { 99 "MADT", 100 madt_probe, 101 madt_probe_cpus, 102 madt_setup_local, 103 madt_setup_io 104 }; 105 106 /* 107 * Code to abuse the crashdump map to map in the tables for the early 108 * probe. We cheat and make the following assumptions about how we 109 * use this KVA: page 0 is used to map in the first page of each table 110 * found via the RSDT or XSDT and pages 1 to n are used to map in the 111 * RSDT or XSDT. The offset is in pages; the length is in bytes. 112 */ 113 static void * 114 madt_map(vm_paddr_t pa, int offset, vm_offset_t length) 115 { 116 vm_offset_t va, off; 117 void *data; 118 119 off = pa & PAGE_MASK; 120 length = roundup(length + off, PAGE_SIZE); 121 pa = pa & PG_FRAME; 122 va = (vm_offset_t)pmap_kenter_temporary(pa, offset) + 123 (offset * PAGE_SIZE); 124 data = (void *)(va + off); 125 length -= PAGE_SIZE; 126 while (length > 0) { 127 va += PAGE_SIZE; 128 pa += PAGE_SIZE; 129 length -= PAGE_SIZE; 130 pmap_kenter(va, pa); 131 invlpg(va); 132 } 133 return (data); 134 } 135 136 static void 137 madt_unmap(void *data, vm_offset_t length) 138 { 139 vm_offset_t va, off; 140 141 va = (vm_offset_t)data; 142 off = va & PAGE_MASK; 143 length = roundup(length + off, PAGE_SIZE); 144 va &= ~PAGE_MASK; 145 while (length > 0) { 146 pmap_kremove(va); 147 invlpg(va); 148 va += PAGE_SIZE; 149 length -= PAGE_SIZE; 150 } 151 } 152 153 static void * 154 madt_map_table(vm_paddr_t pa, int offset, const char *sig) 155 { 156 ACPI_TABLE_HEADER *header; 157 vm_offset_t length; 158 void *table; 159 160 header = madt_map(pa, offset, sizeof(ACPI_TABLE_HEADER)); 161 if (strncmp(header->Signature, sig, 4) != 0) { 162 madt_unmap(header, sizeof(ACPI_TABLE_HEADER)); 163 return (NULL); 164 } 165 length = header->Length; 166 madt_unmap(header, sizeof(ACPI_TABLE_HEADER)); 167 table = madt_map(pa, offset, length); 168 if (ACPI_FAILURE(AcpiTbVerifyTableChecksum(table))) { 169 if (bootverbose) 170 printf("MADT: Failed checksum for table %s\n", sig); 171 madt_unmap(table, length); 172 return (NULL); 173 } 174 return (table); 175 } 176 177 static void 178 madt_unmap_table(void *table) 179 { 180 ACPI_TABLE_HEADER *header; 181 182 header = (ACPI_TABLE_HEADER *)table; 183 madt_unmap(table, header->Length); 184 } 185 186 /* 187 * Look for an ACPI Multiple APIC Description Table ("APIC") 188 */ 189 static int 190 madt_probe(void) 191 { 192 ACPI_POINTER rsdp_ptr; 193 RSDP_DESCRIPTOR *rsdp; 194 RSDT_DESCRIPTOR *rsdt; 195 XSDT_DESCRIPTOR *xsdt; 196 int i, count; 197 198 if (resource_disabled("acpi", 0)) 199 return (ENXIO); 200 201 /* 202 * Map in the RSDP. Since ACPI uses AcpiOsMapMemory() which in turn 203 * calls pmap_mapbios() to find the RSDP, we assume that we can use 204 * pmap_mapbios() to map the RSDP. 205 */ 206 if (AcpiOsGetRootPointer(ACPI_LOGICAL_ADDRESSING, &rsdp_ptr) != AE_OK) 207 return (ENXIO); 208 #ifdef __i386__ 209 KASSERT(rsdp_ptr.Pointer.Physical < KERNLOAD, ("RSDP too high")); 210 #endif 211 rsdp = pmap_mapbios(rsdp_ptr.Pointer.Physical, sizeof(RSDP_DESCRIPTOR)); 212 if (rsdp == NULL) { 213 if (bootverbose) 214 printf("MADT: Failed to map RSDP\n"); 215 return (ENXIO); 216 } 217 218 /* 219 * For ACPI >= 2.0, use the XSDT if it is available. 220 * Otherwise, use the RSDT. We map the XSDT or RSDT at page 1 221 * in the crashdump area. Page 0 is used to map in the 222 * headers of candidate ACPI tables. 223 */ 224 if (rsdp->Revision >= 2 && rsdp->XsdtPhysicalAddress != 0) { 225 /* 226 * AcpiOsGetRootPointer only verifies the checksum for 227 * the version 1.0 portion of the RSDP. Version 2.0 has 228 * an additional checksum that we verify first. 229 */ 230 if (AcpiTbChecksum(rsdp, ACPI_RSDP_XCHECKSUM_LENGTH) != 0) { 231 if (bootverbose) 232 printf("MADT: RSDP failed extended checksum\n"); 233 return (ENXIO); 234 } 235 xsdt = madt_map_table(rsdp->XsdtPhysicalAddress, 1, XSDT_SIG); 236 if (xsdt == NULL) { 237 if (bootverbose) 238 printf("MADT: Failed to map XSDT\n"); 239 return (ENXIO); 240 } 241 count = (xsdt->Length - sizeof(ACPI_TABLE_HEADER)) / 242 sizeof(UINT64); 243 for (i = 0; i < count; i++) 244 if (madt_probe_table(xsdt->TableOffsetEntry[i])) 245 break; 246 madt_unmap_table(xsdt); 247 } else { 248 rsdt = madt_map_table(rsdp->RsdtPhysicalAddress, 1, RSDT_SIG); 249 if (rsdt == NULL) { 250 if (bootverbose) 251 printf("MADT: Failed to map RSDT\n"); 252 return (ENXIO); 253 } 254 count = (rsdt->Length - sizeof(ACPI_TABLE_HEADER)) / 255 sizeof(UINT32); 256 for (i = 0; i < count; i++) 257 if (madt_probe_table(rsdt->TableOffsetEntry[i])) 258 break; 259 madt_unmap_table(rsdt); 260 } 261 pmap_unmapbios((vm_offset_t)rsdp, sizeof(RSDP_DESCRIPTOR)); 262 if (madt_physaddr == 0) { 263 if (bootverbose) 264 printf("MADT: No MADT table found\n"); 265 return (ENXIO); 266 } 267 if (bootverbose) 268 printf("MADT: Found table at 0x%jx\n", 269 (uintmax_t)madt_physaddr); 270 271 /* 272 * Verify that we can map the full table and that its checksum is 273 * correct, etc. 274 */ 275 madt = madt_map_table(madt_physaddr, 0, APIC_SIG); 276 if (madt == NULL) 277 return (ENXIO); 278 madt_unmap_table(madt); 279 madt = NULL; 280 281 return (0); 282 } 283 284 /* 285 * See if a given ACPI table is the MADT. 286 */ 287 static int 288 madt_probe_table(vm_paddr_t address) 289 { 290 ACPI_TABLE_HEADER *table; 291 292 table = madt_map(address, 0, sizeof(ACPI_TABLE_HEADER)); 293 if (table == NULL) { 294 if (bootverbose) 295 printf("MADT: Failed to map table at 0x%jx\n", 296 (uintmax_t)address); 297 return (0); 298 } 299 if (bootverbose) 300 printf("Table '%.4s' at 0x%jx\n", table->Signature, 301 (uintmax_t)address); 302 303 if (strncmp(table->Signature, APIC_SIG, 4) != 0) { 304 madt_unmap(table, sizeof(ACPI_TABLE_HEADER)); 305 return (0); 306 } 307 madt_physaddr = address; 308 madt_length = table->Length; 309 madt_unmap(table, sizeof(ACPI_TABLE_HEADER)); 310 return (1); 311 } 312 313 /* 314 * Run through the MP table enumerating CPUs. 315 */ 316 static int 317 madt_probe_cpus(void) 318 { 319 320 madt = madt_map_table(madt_physaddr, 0, APIC_SIG); 321 KASSERT(madt != NULL, ("Unable to re-map MADT")); 322 madt_walk_table(madt_probe_cpus_handler, NULL); 323 madt_unmap_table(madt); 324 madt = NULL; 325 return (0); 326 } 327 328 /* 329 * Initialize the local APIC on the BSP. 330 */ 331 static int 332 madt_setup_local(void) 333 { 334 335 madt = pmap_mapbios(madt_physaddr, madt_length); 336 lapic_init((uintptr_t)madt->LocalApicAddress); 337 printf("ACPI APIC Table: <%.*s %.*s>\n", 338 (int)sizeof(madt->OemId), madt->OemId, 339 (int)sizeof(madt->OemTableId), madt->OemTableId); 340 341 /* 342 * We ignore 64-bit local APIC override entries. Should we 343 * perhaps emit a warning here if we find one? 344 */ 345 return (0); 346 } 347 348 /* 349 * Enumerate I/O APICs and setup interrupt sources. 350 */ 351 static int 352 madt_setup_io(void) 353 { 354 void *ioapic; 355 u_int pin; 356 int i; 357 358 /* Try to initialize ACPI so that we can access the FADT. */ 359 i = acpi_Startup(); 360 if (ACPI_FAILURE(i)) { 361 printf("MADT: ACPI Startup failed with %s\n", 362 AcpiFormatException(i)); 363 printf("Try disabling either ACPI or apic support.\n"); 364 panic("Using MADT but ACPI doesn't work"); 365 } 366 367 /* First, we run through adding I/O APIC's. */ 368 madt_walk_table(madt_parse_apics, NULL); 369 370 /* Second, we run through the table tweaking interrupt sources. */ 371 madt_walk_table(madt_parse_ints, NULL); 372 373 /* 374 * If there was not an explicit override entry for the SCI, 375 * force it to use level trigger and active-low polarity. 376 */ 377 if (!madt_found_sci_override) { 378 if (madt_find_interrupt(AcpiGbl_FADT->SciInt, &ioapic, &pin) 379 != 0) 380 printf("MADT: Could not find APIC for SCI IRQ %d\n", 381 AcpiGbl_FADT->SciInt); 382 else { 383 printf( 384 "MADT: Forcing active-low polarity and level trigger for SCI\n"); 385 ioapic_set_polarity(ioapic, pin, INTR_POLARITY_LOW); 386 ioapic_set_triggermode(ioapic, pin, INTR_TRIGGER_LEVEL); 387 } 388 } 389 390 /* Third, we register all the I/O APIC's. */ 391 for (i = 0; i <= MAX_APIC_ID; i++) 392 if (ioapics[i].io_apic != NULL) 393 ioapic_register(ioapics[i].io_apic); 394 395 /* Finally, we throw the switch to enable the I/O APIC's. */ 396 acpi_SetDefaultIntrModel(ACPI_INTR_APIC); 397 398 return (0); 399 } 400 401 static void 402 madt_register(void *dummy __unused) 403 { 404 405 apic_register_enumerator(&madt_enumerator); 406 } 407 SYSINIT(madt_register, SI_SUB_CPU - 1, SI_ORDER_FIRST, madt_register, NULL) 408 409 /* 410 * Call the handler routine for each entry in the MADT table. 411 */ 412 static void 413 madt_walk_table(madt_entry_handler *handler, void *arg) 414 { 415 APIC_HEADER *entry; 416 u_char *p, *end; 417 418 end = (u_char *)(madt) + madt->Length; 419 for (p = (u_char *)(madt + 1); p < end; ) { 420 entry = (APIC_HEADER *)p; 421 handler(entry, arg); 422 p += entry->Length; 423 } 424 } 425 426 static void 427 madt_probe_cpus_handler(APIC_HEADER *entry, void *arg) 428 { 429 MADT_PROCESSOR_APIC *proc; 430 struct lapic_info *la; 431 432 switch (entry->Type) { 433 case APIC_PROCESSOR: 434 /* 435 * The MADT does not include a BSP flag, so we have to 436 * let the MP code figure out which CPU is the BSP on 437 * its own. 438 */ 439 proc = (MADT_PROCESSOR_APIC *)entry; 440 if (bootverbose) 441 printf("MADT: Found CPU APIC ID %d ACPI ID %d: %s\n", 442 proc->LocalApicId, proc->ProcessorId, 443 proc->ProcessorEnabled ? "enabled" : "disabled"); 444 if (!proc->ProcessorEnabled) 445 break; 446 if (proc->LocalApicId > MAX_APIC_ID) 447 panic("%s: CPU ID %d too high", __func__, 448 proc->LocalApicId); 449 la = &lapics[proc->LocalApicId]; 450 KASSERT(la->la_enabled == 0, 451 ("Duplicate local APIC ID %d", proc->LocalApicId)); 452 la->la_enabled = 1; 453 la->la_acpi_id = proc->ProcessorId; 454 lapic_create(proc->LocalApicId, 0); 455 break; 456 } 457 } 458 459 460 /* 461 * Add an I/O APIC from an entry in the table. 462 */ 463 static void 464 madt_parse_apics(APIC_HEADER *entry, void *arg __unused) 465 { 466 MADT_IO_APIC *apic; 467 468 switch (entry->Type) { 469 case APIC_IO: 470 apic = (MADT_IO_APIC *)entry; 471 if (bootverbose) 472 printf("MADT: Found IO APIC ID %d, Interrupt %d at %p\n", 473 apic->IoApicId, apic->Interrupt, 474 (void *)(uintptr_t)apic->Address); 475 if (apic->IoApicId > MAX_APIC_ID) 476 panic("%s: I/O APIC ID %d too high", __func__, 477 apic->IoApicId); 478 if (ioapics[apic->IoApicId].io_apic != NULL) 479 panic("%s: Double APIC ID %d", __func__, 480 apic->IoApicId); 481 ioapics[apic->IoApicId].io_apic = ioapic_create( 482 (uintptr_t)apic->Address, apic->IoApicId, 483 apic->Interrupt); 484 ioapics[apic->IoApicId].io_vector = apic->Interrupt; 485 break; 486 default: 487 break; 488 } 489 } 490 491 /* 492 * Determine properties of an interrupt source. Note that for ACPI these 493 * functions are only used for ISA interrupts, so we assume ISA bus values 494 * (Active Hi, Edge Triggered) for conforming values except for the ACPI 495 * SCI for which we use Active Lo, Level Triggered. 496 */ 497 static enum intr_polarity 498 interrupt_polarity(UINT16 Polarity, UINT8 Source) 499 { 500 501 switch (Polarity) { 502 case POLARITY_CONFORMS: 503 if (Source == AcpiGbl_FADT->SciInt) 504 return (INTR_POLARITY_LOW); 505 else 506 return (INTR_POLARITY_HIGH); 507 case POLARITY_ACTIVE_HIGH: 508 return (INTR_POLARITY_HIGH); 509 case POLARITY_ACTIVE_LOW: 510 return (INTR_POLARITY_LOW); 511 default: 512 panic("Bogus Interrupt Polarity"); 513 } 514 } 515 516 static enum intr_trigger 517 interrupt_trigger(UINT16 TriggerMode, UINT8 Source) 518 { 519 520 switch (TriggerMode) { 521 case TRIGGER_CONFORMS: 522 if (Source == AcpiGbl_FADT->SciInt) 523 return (INTR_TRIGGER_LEVEL); 524 else 525 return (INTR_TRIGGER_EDGE); 526 case TRIGGER_EDGE: 527 return (INTR_TRIGGER_EDGE); 528 case TRIGGER_LEVEL: 529 return (INTR_TRIGGER_LEVEL); 530 default: 531 panic("Bogus Interrupt Trigger Mode"); 532 } 533 } 534 535 /* 536 * Find the local APIC ID associated with a given ACPI Processor ID. 537 */ 538 static int 539 madt_find_cpu(u_int acpi_id, u_int *apic_id) 540 { 541 int i; 542 543 for (i = 0; i <= MAX_APIC_ID; i++) { 544 if (!lapics[i].la_enabled) 545 continue; 546 if (lapics[i].la_acpi_id != acpi_id) 547 continue; 548 *apic_id = i; 549 return (0); 550 } 551 return (ENOENT); 552 } 553 554 /* 555 * Find the IO APIC and pin on that APIC associated with a given global 556 * interrupt. 557 */ 558 static int 559 madt_find_interrupt(int intr, void **apic, u_int *pin) 560 { 561 int i, best; 562 563 best = -1; 564 for (i = 0; i <= MAX_APIC_ID; i++) { 565 if (ioapics[i].io_apic == NULL || 566 ioapics[i].io_vector > intr) 567 continue; 568 if (best == -1 || 569 ioapics[best].io_vector < ioapics[i].io_vector) 570 best = i; 571 } 572 if (best == -1) 573 return (ENOENT); 574 *apic = ioapics[best].io_apic; 575 *pin = intr - ioapics[best].io_vector; 576 if (*pin > 32) 577 printf("WARNING: Found intpin of %u for vector %d\n", *pin, 578 intr); 579 return (0); 580 } 581 582 /* 583 * Parse an interrupt source override for an ISA interrupt. 584 */ 585 static void 586 madt_parse_interrupt_override(MADT_INTERRUPT_OVERRIDE *intr) 587 { 588 void *new_ioapic, *old_ioapic; 589 u_int new_pin, old_pin; 590 enum intr_trigger trig; 591 enum intr_polarity pol; 592 char buf[64]; 593 594 if (acpi_quirks & ACPI_Q_MADT_IRQ0 && intr->Source == 0 && 595 intr->Interrupt == 2) { 596 if (bootverbose) 597 printf("MADT: Skipping timer override\n"); 598 return; 599 } 600 if (bootverbose) 601 printf("MADT: Interrupt override: source %u, irq %u\n", 602 intr->Source, intr->Interrupt); 603 KASSERT(intr->Bus == 0, ("bus for interrupt overrides must be zero")); 604 if (madt_find_interrupt(intr->Interrupt, &new_ioapic, 605 &new_pin) != 0) { 606 printf("MADT: Could not find APIC for vector %d (IRQ %d)\n", 607 intr->Interrupt, intr->Source); 608 return; 609 } 610 611 /* 612 * Lookup the appropriate trigger and polarity modes for this 613 * entry. 614 */ 615 trig = interrupt_trigger(intr->TriggerMode, intr->Source); 616 pol = interrupt_polarity(intr->Polarity, intr->Source); 617 618 /* 619 * If the SCI is identity mapped but has edge trigger and 620 * active-hi polarity or the force_sci_lo tunable is set, 621 * force it to use level/lo. 622 */ 623 if (intr->Source == AcpiGbl_FADT->SciInt) { 624 madt_found_sci_override = 1; 625 if (getenv_string("hw.acpi.sci.trigger", buf, sizeof(buf))) { 626 if (tolower(buf[0]) == 'e') 627 trig = INTR_TRIGGER_EDGE; 628 else if (tolower(buf[0]) == 'l') 629 trig = INTR_TRIGGER_LEVEL; 630 else 631 panic( 632 "Invalid trigger %s: must be 'edge' or 'level'", 633 buf); 634 printf("MADT: Forcing SCI to %s trigger\n", 635 trig == INTR_TRIGGER_EDGE ? "edge" : "level"); 636 } 637 if (getenv_string("hw.acpi.sci.polarity", buf, sizeof(buf))) { 638 if (tolower(buf[0]) == 'h') 639 pol = INTR_POLARITY_HIGH; 640 else if (tolower(buf[0]) == 'l') 641 pol = INTR_POLARITY_LOW; 642 else 643 panic( 644 "Invalid polarity %s: must be 'high' or 'low'", 645 buf); 646 printf("MADT: Forcing SCI to active %s polarity\n", 647 pol == INTR_POLARITY_HIGH ? "high" : "low"); 648 } 649 } 650 651 /* Remap the IRQ if it is mapped to a different interrupt vector. */ 652 if (intr->Source != intr->Interrupt) { 653 /* 654 * If the SCI is remapped to a non-ISA global interrupt, 655 * then override the vector we use to setup and allocate 656 * the interrupt. 657 */ 658 if (intr->Interrupt > 15 && 659 intr->Source == AcpiGbl_FADT->SciInt) 660 acpi_OverrideInterruptLevel(intr->Interrupt); 661 else 662 ioapic_remap_vector(new_ioapic, new_pin, intr->Source); 663 if (madt_find_interrupt(intr->Source, &old_ioapic, 664 &old_pin) != 0) 665 printf("MADT: Could not find APIC for source IRQ %d\n", 666 intr->Source); 667 else if (ioapic_get_vector(old_ioapic, old_pin) == 668 intr->Source) 669 ioapic_disable_pin(old_ioapic, old_pin); 670 } 671 672 /* Program the polarity and trigger mode. */ 673 ioapic_set_triggermode(new_ioapic, new_pin, trig); 674 ioapic_set_polarity(new_ioapic, new_pin, pol); 675 } 676 677 /* 678 * Parse an entry for an NMI routed to an IO APIC. 679 */ 680 static void 681 madt_parse_nmi(MADT_NMI_SOURCE *nmi) 682 { 683 void *ioapic; 684 u_int pin; 685 686 if (madt_find_interrupt(nmi->Interrupt, &ioapic, &pin) != 0) { 687 printf("MADT: Could not find APIC for vector %d\n", 688 nmi->Interrupt); 689 return; 690 } 691 692 ioapic_set_nmi(ioapic, pin); 693 if (nmi->TriggerMode != TRIGGER_CONFORMS) 694 ioapic_set_triggermode(ioapic, pin, 695 interrupt_trigger(nmi->TriggerMode, 0)); 696 if (nmi->Polarity != TRIGGER_CONFORMS) 697 ioapic_set_polarity(ioapic, pin, 698 interrupt_polarity(nmi->Polarity, 0)); 699 } 700 701 /* 702 * Parse an entry for an NMI routed to a local APIC LVT pin. 703 */ 704 static void 705 madt_parse_local_nmi(MADT_LOCAL_APIC_NMI *nmi) 706 { 707 u_int apic_id, pin; 708 709 if (nmi->ProcessorId == 0xff) 710 apic_id = APIC_ID_ALL; 711 else if (madt_find_cpu(nmi->ProcessorId, &apic_id) != 0) { 712 if (bootverbose) 713 printf("MADT: Ignoring local NMI routed to ACPI CPU %u\n", 714 nmi->ProcessorId); 715 return; 716 } 717 if (nmi->Lint == 0) 718 pin = LVT_LINT0; 719 else 720 pin = LVT_LINT1; 721 lapic_set_lvt_mode(apic_id, pin, APIC_LVT_DM_NMI); 722 if (nmi->TriggerMode != TRIGGER_CONFORMS) 723 lapic_set_lvt_triggermode(apic_id, pin, 724 interrupt_trigger(nmi->TriggerMode, 0)); 725 if (nmi->Polarity != POLARITY_CONFORMS) 726 lapic_set_lvt_polarity(apic_id, pin, 727 interrupt_polarity(nmi->Polarity, 0)); 728 } 729 730 /* 731 * Parse interrupt entries. 732 */ 733 static void 734 madt_parse_ints(APIC_HEADER *entry, void *arg __unused) 735 { 736 737 switch (entry->Type) { 738 case APIC_XRUPT_OVERRIDE: 739 madt_parse_interrupt_override( 740 (MADT_INTERRUPT_OVERRIDE *)entry); 741 break; 742 case APIC_NMI: 743 madt_parse_nmi((MADT_NMI_SOURCE *)entry); 744 break; 745 case APIC_LOCAL_NMI: 746 madt_parse_local_nmi((MADT_LOCAL_APIC_NMI *)entry); 747 break; 748 } 749 } 750 751 /* 752 * Setup per-CPU ACPI IDs. 753 */ 754 static void 755 madt_set_ids(void *dummy) 756 { 757 struct lapic_info *la; 758 struct pcpu *pc; 759 u_int i; 760 761 if (madt == NULL) 762 return; 763 for (i = 0; i <= mp_maxid; i++) { 764 if (CPU_ABSENT(i)) 765 continue; 766 pc = pcpu_find(i); 767 KASSERT(pc != NULL, ("no pcpu data for CPU %d", i)); 768 la = &lapics[pc->pc_apic_id]; 769 if (!la->la_enabled) 770 panic("APIC: CPU with APIC ID %u is not enabled", 771 pc->pc_apic_id); 772 pc->pc_acpi_id = la->la_acpi_id; 773 if (bootverbose) 774 printf("APIC: CPU %u has ACPI ID %u\n", i, 775 la->la_acpi_id); 776 } 777 } 778 SYSINIT(madt_set_ids, SI_SUB_CPU, SI_ORDER_ANY, madt_set_ids, NULL)
Cache object: fda0ac098811bef820ed16065c4c5fee
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