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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/6.2/sys/i386/acpica/madt.c 158448 2006-05-11 17:41:00Z njl $"); 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 #define NIOAPICS 32 /* Max number of I/O APICs */ 57 #define NLAPICS 32 /* Max number of local APICs */ 58 59 typedef void madt_entry_handler(APIC_HEADER *entry, void *arg); 60 61 /* These two arrays are indexed by APIC IDs. */ 62 struct ioapic_info { 63 void *io_apic; 64 UINT32 io_vector; 65 } ioapics[NIOAPICS]; 66 67 struct lapic_info { 68 u_int la_enabled:1; 69 u_int la_acpi_id:8; 70 } lapics[NLAPICS]; 71 72 static int madt_found_sci_override; 73 static MULTIPLE_APIC_TABLE *madt; 74 static vm_paddr_t madt_physaddr; 75 static vm_offset_t madt_length; 76 77 MALLOC_DEFINE(M_MADT, "MADT Table", "ACPI MADT Table Items"); 78 79 static enum intr_polarity interrupt_polarity(UINT16 Polarity, UINT8 Source); 80 static enum intr_trigger interrupt_trigger(UINT16 TriggerMode, UINT8 Source); 81 static int madt_find_cpu(u_int acpi_id, u_int *apic_id); 82 static int madt_find_interrupt(int intr, void **apic, u_int *pin); 83 static void *madt_map(vm_paddr_t pa, int offset, vm_offset_t length); 84 static void *madt_map_table(vm_paddr_t pa, int offset, const char *sig); 85 static void madt_parse_apics(APIC_HEADER *entry, void *arg); 86 static void madt_parse_interrupt_override(MADT_INTERRUPT_OVERRIDE *intr); 87 static void madt_parse_ints(APIC_HEADER *entry, void *arg __unused); 88 static void madt_parse_local_nmi(MADT_LOCAL_APIC_NMI *nmi); 89 static void madt_parse_nmi(MADT_NMI_SOURCE *nmi); 90 static int madt_probe(void); 91 static int madt_probe_cpus(void); 92 static void madt_probe_cpus_handler(APIC_HEADER *entry, void *arg __unused); 93 static int madt_probe_table(vm_paddr_t address); 94 static void madt_register(void *dummy); 95 static int madt_setup_local(void); 96 static int madt_setup_io(void); 97 static void madt_unmap(void *data, vm_offset_t length); 98 static void madt_unmap_table(void *table); 99 static void madt_walk_table(madt_entry_handler *handler, void *arg); 100 101 static struct apic_enumerator madt_enumerator = { 102 "MADT", 103 madt_probe, 104 madt_probe_cpus, 105 madt_setup_local, 106 madt_setup_io 107 }; 108 109 /* 110 * Code to abuse the crashdump map to map in the tables for the early 111 * probe. We cheat and make the following assumptions about how we 112 * use this KVA: page 0 is used to map in the first page of each table 113 * found via the RSDT or XSDT and pages 1 to n are used to map in the 114 * RSDT or XSDT. The offset is in pages; the length is in bytes. 115 */ 116 static void * 117 madt_map(vm_paddr_t pa, int offset, vm_offset_t length) 118 { 119 vm_offset_t va, off; 120 void *data; 121 122 off = pa & PAGE_MASK; 123 length = roundup(length + off, PAGE_SIZE); 124 pa = pa & PG_FRAME; 125 va = (vm_offset_t)pmap_kenter_temporary(pa, offset) + 126 (offset * PAGE_SIZE); 127 data = (void *)(va + off); 128 length -= PAGE_SIZE; 129 while (length > 0) { 130 va += PAGE_SIZE; 131 pa += PAGE_SIZE; 132 length -= PAGE_SIZE; 133 pmap_kenter(va, pa); 134 invlpg(va); 135 } 136 return (data); 137 } 138 139 static void 140 madt_unmap(void *data, vm_offset_t length) 141 { 142 vm_offset_t va, off; 143 144 va = (vm_offset_t)data; 145 off = va & PAGE_MASK; 146 length = roundup(length + off, PAGE_SIZE); 147 va &= ~PAGE_MASK; 148 while (length > 0) { 149 pmap_kremove(va); 150 invlpg(va); 151 va += PAGE_SIZE; 152 length -= PAGE_SIZE; 153 } 154 } 155 156 static void * 157 madt_map_table(vm_paddr_t pa, int offset, const char *sig) 158 { 159 ACPI_TABLE_HEADER *header; 160 vm_offset_t length; 161 void *table; 162 163 header = madt_map(pa, offset, sizeof(ACPI_TABLE_HEADER)); 164 if (strncmp(header->Signature, sig, 4) != 0) { 165 madt_unmap(header, sizeof(ACPI_TABLE_HEADER)); 166 return (NULL); 167 } 168 length = header->Length; 169 madt_unmap(header, sizeof(ACPI_TABLE_HEADER)); 170 table = madt_map(pa, offset, length); 171 if (ACPI_FAILURE(AcpiTbVerifyTableChecksum(table))) { 172 if (bootverbose) 173 printf("MADT: Failed checksum for table %s\n", sig); 174 madt_unmap(table, length); 175 return (NULL); 176 } 177 return (table); 178 } 179 180 static void 181 madt_unmap_table(void *table) 182 { 183 ACPI_TABLE_HEADER *header; 184 185 header = (ACPI_TABLE_HEADER *)table; 186 madt_unmap(table, header->Length); 187 } 188 189 /* 190 * Look for an ACPI Multiple APIC Description Table ("APIC") 191 */ 192 static int 193 madt_probe(void) 194 { 195 ACPI_POINTER rsdp_ptr; 196 RSDP_DESCRIPTOR *rsdp; 197 RSDT_DESCRIPTOR *rsdt; 198 XSDT_DESCRIPTOR *xsdt; 199 int i, count; 200 201 if (resource_disabled("acpi", 0)) 202 return (ENXIO); 203 204 /* 205 * Map in the RSDP. Since ACPI uses AcpiOsMapMemory() which in turn 206 * calls pmap_mapdev() to find the RSDP, we assume that we can use 207 * pmap_mapdev() to map the RSDP. 208 */ 209 if (AcpiOsGetRootPointer(ACPI_LOGICAL_ADDRESSING, &rsdp_ptr) != AE_OK) 210 return (ENXIO); 211 #ifdef __i386__ 212 KASSERT(rsdp_ptr.Pointer.Physical < KERNLOAD, ("RSDP too high")); 213 #endif 214 rsdp = pmap_mapdev(rsdp_ptr.Pointer.Physical, sizeof(RSDP_DESCRIPTOR)); 215 if (rsdp == NULL) { 216 if (bootverbose) 217 printf("MADT: Failed to map RSDP\n"); 218 return (ENXIO); 219 } 220 221 /* 222 * For ACPI >= 2.0, use the XSDT if it is available. 223 * Otherwise, use the RSDT. We map the XSDT or RSDT at page 1 224 * in the crashdump area. Page 0 is used to map in the 225 * headers of candidate ACPI tables. 226 */ 227 if (rsdp->Revision >= 2 && rsdp->XsdtPhysicalAddress != 0) { 228 /* 229 * AcpiOsGetRootPointer only verifies the checksum for 230 * the version 1.0 portion of the RSDP. Version 2.0 has 231 * an additional checksum that we verify first. 232 */ 233 if (AcpiTbChecksum(rsdp, ACPI_RSDP_XCHECKSUM_LENGTH) != 0) { 234 if (bootverbose) 235 printf("MADT: RSDP failed extended checksum\n"); 236 return (ENXIO); 237 } 238 xsdt = madt_map_table(rsdp->XsdtPhysicalAddress, 1, XSDT_SIG); 239 if (xsdt == NULL) { 240 if (bootverbose) 241 printf("MADT: Failed to map XSDT\n"); 242 return (ENXIO); 243 } 244 count = (xsdt->Length - sizeof(ACPI_TABLE_HEADER)) / 245 sizeof(UINT64); 246 for (i = 0; i < count; i++) 247 if (madt_probe_table(xsdt->TableOffsetEntry[i])) 248 break; 249 madt_unmap_table(xsdt); 250 } else { 251 rsdt = madt_map_table(rsdp->RsdtPhysicalAddress, 1, RSDT_SIG); 252 if (rsdt == NULL) { 253 if (bootverbose) 254 printf("MADT: Failed to map RSDT\n"); 255 return (ENXIO); 256 } 257 count = (rsdt->Length - sizeof(ACPI_TABLE_HEADER)) / 258 sizeof(UINT32); 259 for (i = 0; i < count; i++) 260 if (madt_probe_table(rsdt->TableOffsetEntry[i])) 261 break; 262 madt_unmap_table(rsdt); 263 } 264 pmap_unmapdev((vm_offset_t)rsdp, sizeof(RSDP_DESCRIPTOR)); 265 if (madt_physaddr == 0) { 266 if (bootverbose) 267 printf("MADT: No MADT table found\n"); 268 return (ENXIO); 269 } 270 if (bootverbose) 271 printf("MADT: Found table at 0x%jx\n", 272 (uintmax_t)madt_physaddr); 273 274 /* 275 * Verify that we can map the full table and that its checksum is 276 * correct, etc. 277 */ 278 madt = madt_map_table(madt_physaddr, 0, APIC_SIG); 279 if (madt == NULL) 280 return (ENXIO); 281 madt_unmap_table(madt); 282 madt = NULL; 283 284 return (0); 285 } 286 287 /* 288 * See if a given ACPI table is the MADT. 289 */ 290 static int 291 madt_probe_table(vm_paddr_t address) 292 { 293 ACPI_TABLE_HEADER *table; 294 295 table = madt_map(address, 0, sizeof(ACPI_TABLE_HEADER)); 296 if (table == NULL) { 297 if (bootverbose) 298 printf("MADT: Failed to map table at 0x%jx\n", 299 (uintmax_t)address); 300 return (0); 301 } 302 if (bootverbose) 303 printf("Table '%.4s' at 0x%jx\n", table->Signature, 304 (uintmax_t)address); 305 306 if (strncmp(table->Signature, APIC_SIG, 4) != 0) { 307 madt_unmap(table, sizeof(ACPI_TABLE_HEADER)); 308 return (0); 309 } 310 madt_physaddr = address; 311 madt_length = table->Length; 312 madt_unmap(table, sizeof(ACPI_TABLE_HEADER)); 313 return (1); 314 } 315 316 /* 317 * Run through the MP table enumerating CPUs. 318 */ 319 static int 320 madt_probe_cpus(void) 321 { 322 323 madt = madt_map_table(madt_physaddr, 0, APIC_SIG); 324 KASSERT(madt != NULL, ("Unable to re-map MADT")); 325 madt_walk_table(madt_probe_cpus_handler, NULL); 326 madt_unmap_table(madt); 327 madt = NULL; 328 return (0); 329 } 330 331 /* 332 * Initialize the local APIC on the BSP. 333 */ 334 static int 335 madt_setup_local(void) 336 { 337 338 madt = pmap_mapdev(madt_physaddr, madt_length); 339 lapic_init((uintptr_t)madt->LocalApicAddress); 340 printf("ACPI APIC Table: <%.*s %.*s>\n", 341 (int)sizeof(madt->OemId), madt->OemId, 342 (int)sizeof(madt->OemTableId), madt->OemTableId); 343 344 /* 345 * We ignore 64-bit local APIC override entries. Should we 346 * perhaps emit a warning here if we find one? 347 */ 348 return (0); 349 } 350 351 /* 352 * Enumerate I/O APICs and setup interrupt sources. 353 */ 354 static int 355 madt_setup_io(void) 356 { 357 void *ioapic; 358 u_int pin; 359 int i; 360 361 /* Try to initialize ACPI so that we can access the FADT. */ 362 i = acpi_Startup(); 363 if (ACPI_FAILURE(i)) { 364 printf("MADT: ACPI Startup failed with %s\n", 365 AcpiFormatException(i)); 366 printf("Try disabling either ACPI or apic support.\n"); 367 panic("Using MADT but ACPI doesn't work"); 368 } 369 370 /* First, we run through adding I/O APIC's. */ 371 madt_walk_table(madt_parse_apics, NULL); 372 373 /* Second, we run through the table tweaking interrupt sources. */ 374 madt_walk_table(madt_parse_ints, NULL); 375 376 /* 377 * If there was not an explicit override entry for the SCI, 378 * force it to use level trigger and active-low polarity. 379 */ 380 if (!madt_found_sci_override) { 381 if (madt_find_interrupt(AcpiGbl_FADT->SciInt, &ioapic, &pin) 382 != 0) 383 printf("MADT: Could not find APIC for SCI IRQ %d\n", 384 AcpiGbl_FADT->SciInt); 385 else { 386 printf( 387 "MADT: Forcing active-low polarity and level trigger for SCI\n"); 388 ioapic_set_polarity(ioapic, pin, INTR_POLARITY_LOW); 389 ioapic_set_triggermode(ioapic, pin, INTR_TRIGGER_LEVEL); 390 } 391 } 392 393 /* Third, we register all the I/O APIC's. */ 394 for (i = 0; i < NIOAPICS; i++) 395 if (ioapics[i].io_apic != NULL) 396 ioapic_register(ioapics[i].io_apic); 397 398 /* Finally, we throw the switch to enable the I/O APIC's. */ 399 acpi_SetDefaultIntrModel(ACPI_INTR_APIC); 400 401 return (0); 402 } 403 404 static void 405 madt_register(void *dummy __unused) 406 { 407 408 apic_register_enumerator(&madt_enumerator); 409 } 410 SYSINIT(madt_register, SI_SUB_CPU - 1, SI_ORDER_FIRST, madt_register, NULL) 411 412 /* 413 * Call the handler routine for each entry in the MADT table. 414 */ 415 static void 416 madt_walk_table(madt_entry_handler *handler, void *arg) 417 { 418 APIC_HEADER *entry; 419 u_char *p, *end; 420 421 end = (u_char *)(madt) + madt->Length; 422 for (p = (u_char *)(madt + 1); p < end; ) { 423 entry = (APIC_HEADER *)p; 424 handler(entry, arg); 425 p += entry->Length; 426 } 427 } 428 429 static void 430 madt_probe_cpus_handler(APIC_HEADER *entry, void *arg) 431 { 432 MADT_PROCESSOR_APIC *proc; 433 struct lapic_info *la; 434 435 switch (entry->Type) { 436 case APIC_PROCESSOR: 437 /* 438 * The MADT does not include a BSP flag, so we have to 439 * let the MP code figure out which CPU is the BSP on 440 * its own. 441 */ 442 proc = (MADT_PROCESSOR_APIC *)entry; 443 if (bootverbose) 444 printf("MADT: Found CPU APIC ID %d ACPI ID %d: %s\n", 445 proc->LocalApicId, proc->ProcessorId, 446 proc->ProcessorEnabled ? "enabled" : "disabled"); 447 if (!proc->ProcessorEnabled) 448 break; 449 if (proc->LocalApicId >= NLAPICS) 450 panic("%s: CPU ID %d too high", __func__, 451 proc->LocalApicId); 452 la = &lapics[proc->LocalApicId]; 453 KASSERT(la->la_enabled == 0, 454 ("Duplicate local APIC ID %d", proc->LocalApicId)); 455 la->la_enabled = 1; 456 la->la_acpi_id = proc->ProcessorId; 457 lapic_create(proc->LocalApicId, 0); 458 break; 459 } 460 } 461 462 463 /* 464 * Add an I/O APIC from an entry in the table. 465 */ 466 static void 467 madt_parse_apics(APIC_HEADER *entry, void *arg __unused) 468 { 469 MADT_IO_APIC *apic; 470 471 switch (entry->Type) { 472 case APIC_IO: 473 apic = (MADT_IO_APIC *)entry; 474 if (bootverbose) 475 printf("MADT: Found IO APIC ID %d, Interrupt %d at %p\n", 476 apic->IoApicId, apic->Interrupt, 477 (void *)(uintptr_t)apic->Address); 478 if (apic->IoApicId >= NIOAPICS) 479 panic("%s: I/O APIC ID %d too high", __func__, 480 apic->IoApicId); 481 if (ioapics[apic->IoApicId].io_apic != NULL) 482 panic("%s: Double APIC ID %d", __func__, 483 apic->IoApicId); 484 ioapics[apic->IoApicId].io_apic = ioapic_create( 485 (uintptr_t)apic->Address, apic->IoApicId, 486 apic->Interrupt); 487 ioapics[apic->IoApicId].io_vector = apic->Interrupt; 488 break; 489 default: 490 break; 491 } 492 } 493 494 /* 495 * Determine properties of an interrupt source. Note that for ACPI these 496 * functions are only used for ISA interrupts, so we assume ISA bus values 497 * (Active Hi, Edge Triggered) for conforming values except for the ACPI 498 * SCI for which we use Active Lo, Level Triggered. 499 */ 500 static enum intr_polarity 501 interrupt_polarity(UINT16 Polarity, UINT8 Source) 502 { 503 504 switch (Polarity) { 505 case POLARITY_CONFORMS: 506 if (Source == AcpiGbl_FADT->SciInt) 507 return (INTR_POLARITY_LOW); 508 else 509 return (INTR_POLARITY_HIGH); 510 case POLARITY_ACTIVE_HIGH: 511 return (INTR_POLARITY_HIGH); 512 case POLARITY_ACTIVE_LOW: 513 return (INTR_POLARITY_LOW); 514 default: 515 panic("Bogus Interrupt Polarity"); 516 } 517 } 518 519 static enum intr_trigger 520 interrupt_trigger(UINT16 TriggerMode, UINT8 Source) 521 { 522 523 switch (TriggerMode) { 524 case TRIGGER_CONFORMS: 525 if (Source == AcpiGbl_FADT->SciInt) 526 return (INTR_TRIGGER_LEVEL); 527 else 528 return (INTR_TRIGGER_EDGE); 529 case TRIGGER_EDGE: 530 return (INTR_TRIGGER_EDGE); 531 case TRIGGER_LEVEL: 532 return (INTR_TRIGGER_LEVEL); 533 default: 534 panic("Bogus Interrupt Trigger Mode"); 535 } 536 } 537 538 /* 539 * Find the local APIC ID associated with a given ACPI Processor ID. 540 */ 541 static int 542 madt_find_cpu(u_int acpi_id, u_int *apic_id) 543 { 544 int i; 545 546 for (i = 0; i < NLAPICS; i++) { 547 if (!lapics[i].la_enabled) 548 continue; 549 if (lapics[i].la_acpi_id != acpi_id) 550 continue; 551 *apic_id = i; 552 return (0); 553 } 554 return (ENOENT); 555 } 556 557 /* 558 * Find the IO APIC and pin on that APIC associated with a given global 559 * interrupt. 560 */ 561 static int 562 madt_find_interrupt(int intr, void **apic, u_int *pin) 563 { 564 int i, best; 565 566 best = -1; 567 for (i = 0; i < NIOAPICS; i++) { 568 if (ioapics[i].io_apic == NULL || 569 ioapics[i].io_vector > intr) 570 continue; 571 if (best == -1 || 572 ioapics[best].io_vector < ioapics[i].io_vector) 573 best = i; 574 } 575 if (best == -1) 576 return (ENOENT); 577 *apic = ioapics[best].io_apic; 578 *pin = intr - ioapics[best].io_vector; 579 if (*pin > 32) 580 printf("WARNING: Found intpin of %u for vector %d\n", *pin, 581 intr); 582 return (0); 583 } 584 585 /* 586 * Parse an interrupt source override for an ISA interrupt. 587 */ 588 static void 589 madt_parse_interrupt_override(MADT_INTERRUPT_OVERRIDE *intr) 590 { 591 void *new_ioapic, *old_ioapic; 592 u_int new_pin, old_pin; 593 enum intr_trigger trig; 594 enum intr_polarity pol; 595 char buf[64]; 596 597 if (acpi_quirks & ACPI_Q_MADT_IRQ0 && intr->Source == 0 && 598 intr->Interrupt == 2) { 599 if (bootverbose) 600 printf("MADT: Skipping timer override\n"); 601 return; 602 } 603 if (bootverbose) 604 printf("MADT: Interrupt override: source %u, irq %u\n", 605 intr->Source, intr->Interrupt); 606 KASSERT(intr->Bus == 0, ("bus for interrupt overrides must be zero")); 607 if (madt_find_interrupt(intr->Interrupt, &new_ioapic, 608 &new_pin) != 0) { 609 printf("MADT: Could not find APIC for vector %d (IRQ %d)\n", 610 intr->Interrupt, intr->Source); 611 return; 612 } 613 614 /* 615 * Lookup the appropriate trigger and polarity modes for this 616 * entry. 617 */ 618 trig = interrupt_trigger(intr->TriggerMode, intr->Source); 619 pol = interrupt_polarity(intr->Polarity, intr->Source); 620 621 /* 622 * If the SCI is identity mapped but has edge trigger and 623 * active-hi polarity or the force_sci_lo tunable is set, 624 * force it to use level/lo. 625 */ 626 if (intr->Source == AcpiGbl_FADT->SciInt) { 627 madt_found_sci_override = 1; 628 if (getenv_string("hw.acpi.sci.trigger", buf, sizeof(buf))) { 629 if (tolower(buf[0]) == 'e') 630 trig = INTR_TRIGGER_EDGE; 631 else if (tolower(buf[0]) == 'l') 632 trig = INTR_TRIGGER_LEVEL; 633 else 634 panic( 635 "Invalid trigger %s: must be 'edge' or 'level'", 636 buf); 637 printf("MADT: Forcing SCI to %s trigger\n", 638 trig == INTR_TRIGGER_EDGE ? "edge" : "level"); 639 } 640 if (getenv_string("hw.acpi.sci.polarity", buf, sizeof(buf))) { 641 if (tolower(buf[0]) == 'h') 642 pol = INTR_POLARITY_HIGH; 643 else if (tolower(buf[0]) == 'l') 644 pol = INTR_POLARITY_LOW; 645 else 646 panic( 647 "Invalid polarity %s: must be 'high' or 'low'", 648 buf); 649 printf("MADT: Forcing SCI to active %s polarity\n", 650 pol == INTR_POLARITY_HIGH ? "high" : "low"); 651 } 652 } 653 654 /* Remap the IRQ if it is mapped to a different interrupt vector. */ 655 if (intr->Source != intr->Interrupt) { 656 /* 657 * If the SCI is remapped to a non-ISA global interrupt, 658 * then override the vector we use to setup and allocate 659 * the interrupt. 660 */ 661 if (intr->Interrupt > 15 && 662 intr->Source == AcpiGbl_FADT->SciInt) 663 acpi_OverrideInterruptLevel(intr->Interrupt); 664 else 665 ioapic_remap_vector(new_ioapic, new_pin, intr->Source); 666 if (madt_find_interrupt(intr->Source, &old_ioapic, 667 &old_pin) != 0) 668 printf("MADT: Could not find APIC for source IRQ %d\n", 669 intr->Source); 670 else if (ioapic_get_vector(old_ioapic, old_pin) == 671 intr->Source) 672 ioapic_disable_pin(old_ioapic, old_pin); 673 } 674 675 /* Program the polarity and trigger mode. */ 676 ioapic_set_triggermode(new_ioapic, new_pin, trig); 677 ioapic_set_polarity(new_ioapic, new_pin, pol); 678 } 679 680 /* 681 * Parse an entry for an NMI routed to an IO APIC. 682 */ 683 static void 684 madt_parse_nmi(MADT_NMI_SOURCE *nmi) 685 { 686 void *ioapic; 687 u_int pin; 688 689 if (madt_find_interrupt(nmi->Interrupt, &ioapic, &pin) != 0) { 690 printf("MADT: Could not find APIC for vector %d\n", 691 nmi->Interrupt); 692 return; 693 } 694 695 ioapic_set_nmi(ioapic, pin); 696 if (nmi->TriggerMode != TRIGGER_CONFORMS) 697 ioapic_set_triggermode(ioapic, pin, 698 interrupt_trigger(nmi->TriggerMode, 0)); 699 if (nmi->Polarity != TRIGGER_CONFORMS) 700 ioapic_set_polarity(ioapic, pin, 701 interrupt_polarity(nmi->Polarity, 0)); 702 } 703 704 /* 705 * Parse an entry for an NMI routed to a local APIC LVT pin. 706 */ 707 static void 708 madt_parse_local_nmi(MADT_LOCAL_APIC_NMI *nmi) 709 { 710 u_int apic_id, pin; 711 712 if (nmi->ProcessorId == 0xff) 713 apic_id = APIC_ID_ALL; 714 else if (madt_find_cpu(nmi->ProcessorId, &apic_id) != 0) { 715 if (bootverbose) 716 printf("MADT: Ignoring local NMI routed to ACPI CPU %u\n", 717 nmi->ProcessorId); 718 return; 719 } 720 if (nmi->Lint == 0) 721 pin = LVT_LINT0; 722 else 723 pin = LVT_LINT1; 724 lapic_set_lvt_mode(apic_id, pin, APIC_LVT_DM_NMI); 725 if (nmi->TriggerMode != TRIGGER_CONFORMS) 726 lapic_set_lvt_triggermode(apic_id, pin, 727 interrupt_trigger(nmi->TriggerMode, 0)); 728 if (nmi->Polarity != POLARITY_CONFORMS) 729 lapic_set_lvt_polarity(apic_id, pin, 730 interrupt_polarity(nmi->Polarity, 0)); 731 } 732 733 /* 734 * Parse interrupt entries. 735 */ 736 static void 737 madt_parse_ints(APIC_HEADER *entry, void *arg __unused) 738 { 739 740 switch (entry->Type) { 741 case APIC_XRUPT_OVERRIDE: 742 madt_parse_interrupt_override( 743 (MADT_INTERRUPT_OVERRIDE *)entry); 744 break; 745 case APIC_NMI: 746 madt_parse_nmi((MADT_NMI_SOURCE *)entry); 747 break; 748 case APIC_LOCAL_NMI: 749 madt_parse_local_nmi((MADT_LOCAL_APIC_NMI *)entry); 750 break; 751 } 752 } 753 754 /* 755 * Setup per-CPU ACPI IDs. 756 */ 757 static void 758 madt_set_ids(void *dummy) 759 { 760 struct lapic_info *la; 761 struct pcpu *pc; 762 u_int i; 763 764 if (madt == NULL) 765 return; 766 for (i = 0; i <= mp_maxid; i++) { 767 if (CPU_ABSENT(i)) 768 continue; 769 pc = pcpu_find(i); 770 KASSERT(pc != NULL, ("no pcpu data for CPU %d", i)); 771 la = &lapics[pc->pc_apic_id]; 772 if (!la->la_enabled) 773 panic("APIC: CPU with APIC ID %u is not enabled", 774 pc->pc_apic_id); 775 pc->pc_acpi_id = la->la_acpi_id; 776 if (bootverbose) 777 printf("APIC: CPU %u has ACPI ID %u\n", i, 778 la->la_acpi_id); 779 } 780 } 781 SYSINIT(madt_set_ids, SI_SUB_CPU, SI_ORDER_ANY, madt_set_ids, NULL)
Cache object: 7120f66704f86bbe31ad042f80cb2f87
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