1 /* 2 * boot.c - Architecture-Specific Low-Level ACPI Boot Support 3 * 4 * Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com> 5 * Copyright (C) 2001 Jun Nakajima <jun.nakajima@intel.com> 6 * 7 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 8 * 9 * This program is free software; you can redistribute it and/or modify 10 * it under the terms of the GNU General Public License as published by 11 * the Free Software Foundation; either version 2 of the License, or 12 * (at your option) any later version. 13 * 14 * This program is distributed in the hope that it will be useful, 15 * but WITHOUT ANY WARRANTY; without even the implied warranty of 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 * GNU General Public License for more details. 18 * 19 * You should have received a copy of the GNU General Public License 20 * along with this program; if not, write to the Free Software 21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 22 * 23 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 24 */ 25 26 #include <linux/init.h> 27 #include <linux/acpi.h> 28 #include <linux/acpi_pmtmr.h> 29 #include <linux/efi.h> 30 #include <linux/cpumask.h> 31 #include <linux/module.h> 32 #include <linux/dmi.h> 33 #include <linux/irq.h> 34 #include <linux/slab.h> 35 #include <linux/bootmem.h> 36 #include <linux/ioport.h> 37 #include <linux/pci.h> 38 39 #include <asm/irqdomain.h> 40 #include <asm/pci_x86.h> 41 #include <asm/pgtable.h> 42 #include <asm/io_apic.h> 43 #include <asm/apic.h> 44 #include <asm/io.h> 45 #include <asm/mpspec.h> 46 #include <asm/smp.h> 47 #include <asm/i8259.h> 48 49 #include "sleep.h" /* To include x86_acpi_suspend_lowlevel */ 50 static int __initdata acpi_force = 0; 51 int acpi_disabled; 52 EXPORT_SYMBOL(acpi_disabled); 53 54 #ifdef CONFIG_X86_64 55 # include <asm/proto.h> 56 #endif /* X86 */ 57 58 #define PREFIX "ACPI: " 59 60 int acpi_noirq; /* skip ACPI IRQ initialization */ 61 int acpi_pci_disabled; /* skip ACPI PCI scan and IRQ initialization */ 62 EXPORT_SYMBOL(acpi_pci_disabled); 63 64 int acpi_lapic; 65 int acpi_ioapic; 66 int acpi_strict; 67 int acpi_disable_cmcff; 68 69 u8 acpi_sci_flags __initdata; 70 int acpi_sci_override_gsi __initdata; 71 int acpi_skip_timer_override __initdata; 72 int acpi_use_timer_override __initdata; 73 int acpi_fix_pin2_polarity __initdata; 74 75 #ifdef CONFIG_X86_LOCAL_APIC 76 static u64 acpi_lapic_addr __initdata = APIC_DEFAULT_PHYS_BASE; 77 #endif 78 79 /* 80 * Locks related to IOAPIC hotplug 81 * Hotplug side: 82 * ->device_hotplug_lock 83 * ->acpi_ioapic_lock 84 * ->ioapic_lock 85 * Interrupt mapping side: 86 * ->acpi_ioapic_lock 87 * ->ioapic_mutex 88 * ->ioapic_lock 89 */ 90 static DEFINE_MUTEX(acpi_ioapic_lock); 91 92 /* -------------------------------------------------------------------------- 93 Boot-time Configuration 94 -------------------------------------------------------------------------- */ 95 96 /* 97 * The default interrupt routing model is PIC (8259). This gets 98 * overridden if IOAPICs are enumerated (below). 99 */ 100 enum acpi_irq_model_id acpi_irq_model = ACPI_IRQ_MODEL_PIC; 101 102 103 /* 104 * ISA irqs by default are the first 16 gsis but can be 105 * any gsi as specified by an interrupt source override. 106 */ 107 static u32 isa_irq_to_gsi[NR_IRQS_LEGACY] __read_mostly = { 108 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 109 }; 110 111 #define ACPI_INVALID_GSI INT_MIN 112 113 /* 114 * This is just a simple wrapper around early_ioremap(), 115 * with sanity checks for phys == 0 and size == 0. 116 */ 117 char *__init __acpi_map_table(unsigned long phys, unsigned long size) 118 { 119 120 if (!phys || !size) 121 return NULL; 122 123 return early_ioremap(phys, size); 124 } 125 126 void __init __acpi_unmap_table(char *map, unsigned long size) 127 { 128 if (!map || !size) 129 return; 130 131 early_iounmap(map, size); 132 } 133 134 #ifdef CONFIG_X86_LOCAL_APIC 135 static int __init acpi_parse_madt(struct acpi_table_header *table) 136 { 137 struct acpi_table_madt *madt = NULL; 138 139 if (!cpu_has_apic) 140 return -EINVAL; 141 142 madt = (struct acpi_table_madt *)table; 143 if (!madt) { 144 printk(KERN_WARNING PREFIX "Unable to map MADT\n"); 145 return -ENODEV; 146 } 147 148 if (madt->address) { 149 acpi_lapic_addr = (u64) madt->address; 150 151 printk(KERN_DEBUG PREFIX "Local APIC address 0x%08x\n", 152 madt->address); 153 } 154 155 default_acpi_madt_oem_check(madt->header.oem_id, 156 madt->header.oem_table_id); 157 158 return 0; 159 } 160 161 /** 162 * acpi_register_lapic - register a local apic and generates a logic cpu number 163 * @id: local apic id to register 164 * @enabled: this cpu is enabled or not 165 * 166 * Returns the logic cpu number which maps to the local apic 167 */ 168 static int acpi_register_lapic(int id, u8 enabled) 169 { 170 unsigned int ver = 0; 171 172 if (id >= MAX_LOCAL_APIC) { 173 printk(KERN_INFO PREFIX "skipped apicid that is too big\n"); 174 return -EINVAL; 175 } 176 177 if (!enabled) { 178 ++disabled_cpus; 179 return -EINVAL; 180 } 181 182 if (boot_cpu_physical_apicid != -1U) 183 ver = apic_version[boot_cpu_physical_apicid]; 184 185 return generic_processor_info(id, ver); 186 } 187 188 static int __init 189 acpi_parse_x2apic(struct acpi_subtable_header *header, const unsigned long end) 190 { 191 struct acpi_madt_local_x2apic *processor = NULL; 192 int apic_id; 193 u8 enabled; 194 195 processor = (struct acpi_madt_local_x2apic *)header; 196 197 if (BAD_MADT_ENTRY(processor, end)) 198 return -EINVAL; 199 200 acpi_table_print_madt_entry(header); 201 202 apic_id = processor->local_apic_id; 203 enabled = processor->lapic_flags & ACPI_MADT_ENABLED; 204 #ifdef CONFIG_X86_X2APIC 205 /* 206 * We need to register disabled CPU as well to permit 207 * counting disabled CPUs. This allows us to size 208 * cpus_possible_map more accurately, to permit 209 * to not preallocating memory for all NR_CPUS 210 * when we use CPU hotplug. 211 */ 212 if (!apic->apic_id_valid(apic_id) && enabled) 213 printk(KERN_WARNING PREFIX "x2apic entry ignored\n"); 214 else 215 acpi_register_lapic(apic_id, enabled); 216 #else 217 printk(KERN_WARNING PREFIX "x2apic entry ignored\n"); 218 #endif 219 220 return 0; 221 } 222 223 static int __init 224 acpi_parse_lapic(struct acpi_subtable_header * header, const unsigned long end) 225 { 226 struct acpi_madt_local_apic *processor = NULL; 227 228 processor = (struct acpi_madt_local_apic *)header; 229 230 if (BAD_MADT_ENTRY(processor, end)) 231 return -EINVAL; 232 233 acpi_table_print_madt_entry(header); 234 235 /* 236 * We need to register disabled CPU as well to permit 237 * counting disabled CPUs. This allows us to size 238 * cpus_possible_map more accurately, to permit 239 * to not preallocating memory for all NR_CPUS 240 * when we use CPU hotplug. 241 */ 242 acpi_register_lapic(processor->id, /* APIC ID */ 243 processor->lapic_flags & ACPI_MADT_ENABLED); 244 245 return 0; 246 } 247 248 static int __init 249 acpi_parse_sapic(struct acpi_subtable_header *header, const unsigned long end) 250 { 251 struct acpi_madt_local_sapic *processor = NULL; 252 253 processor = (struct acpi_madt_local_sapic *)header; 254 255 if (BAD_MADT_ENTRY(processor, end)) 256 return -EINVAL; 257 258 acpi_table_print_madt_entry(header); 259 260 acpi_register_lapic((processor->id << 8) | processor->eid,/* APIC ID */ 261 processor->lapic_flags & ACPI_MADT_ENABLED); 262 263 return 0; 264 } 265 266 static int __init 267 acpi_parse_lapic_addr_ovr(struct acpi_subtable_header * header, 268 const unsigned long end) 269 { 270 struct acpi_madt_local_apic_override *lapic_addr_ovr = NULL; 271 272 lapic_addr_ovr = (struct acpi_madt_local_apic_override *)header; 273 274 if (BAD_MADT_ENTRY(lapic_addr_ovr, end)) 275 return -EINVAL; 276 277 acpi_lapic_addr = lapic_addr_ovr->address; 278 279 return 0; 280 } 281 282 static int __init 283 acpi_parse_x2apic_nmi(struct acpi_subtable_header *header, 284 const unsigned long end) 285 { 286 struct acpi_madt_local_x2apic_nmi *x2apic_nmi = NULL; 287 288 x2apic_nmi = (struct acpi_madt_local_x2apic_nmi *)header; 289 290 if (BAD_MADT_ENTRY(x2apic_nmi, end)) 291 return -EINVAL; 292 293 acpi_table_print_madt_entry(header); 294 295 if (x2apic_nmi->lint != 1) 296 printk(KERN_WARNING PREFIX "NMI not connected to LINT 1!\n"); 297 298 return 0; 299 } 300 301 static int __init 302 acpi_parse_lapic_nmi(struct acpi_subtable_header * header, const unsigned long end) 303 { 304 struct acpi_madt_local_apic_nmi *lapic_nmi = NULL; 305 306 lapic_nmi = (struct acpi_madt_local_apic_nmi *)header; 307 308 if (BAD_MADT_ENTRY(lapic_nmi, end)) 309 return -EINVAL; 310 311 acpi_table_print_madt_entry(header); 312 313 if (lapic_nmi->lint != 1) 314 printk(KERN_WARNING PREFIX "NMI not connected to LINT 1!\n"); 315 316 return 0; 317 } 318 319 #endif /*CONFIG_X86_LOCAL_APIC */ 320 321 #ifdef CONFIG_X86_IO_APIC 322 #define MP_ISA_BUS 0 323 324 static void __init mp_override_legacy_irq(u8 bus_irq, u8 polarity, u8 trigger, 325 u32 gsi) 326 { 327 int ioapic; 328 int pin; 329 struct mpc_intsrc mp_irq; 330 331 /* 332 * Convert 'gsi' to 'ioapic.pin'. 333 */ 334 ioapic = mp_find_ioapic(gsi); 335 if (ioapic < 0) 336 return; 337 pin = mp_find_ioapic_pin(ioapic, gsi); 338 339 /* 340 * TBD: This check is for faulty timer entries, where the override 341 * erroneously sets the trigger to level, resulting in a HUGE 342 * increase of timer interrupts! 343 */ 344 if ((bus_irq == 0) && (trigger == 3)) 345 trigger = 1; 346 347 mp_irq.type = MP_INTSRC; 348 mp_irq.irqtype = mp_INT; 349 mp_irq.irqflag = (trigger << 2) | polarity; 350 mp_irq.srcbus = MP_ISA_BUS; 351 mp_irq.srcbusirq = bus_irq; /* IRQ */ 352 mp_irq.dstapic = mpc_ioapic_id(ioapic); /* APIC ID */ 353 mp_irq.dstirq = pin; /* INTIN# */ 354 355 mp_save_irq(&mp_irq); 356 357 /* 358 * Reset default identity mapping if gsi is also an legacy IRQ, 359 * otherwise there will be more than one entry with the same GSI 360 * and acpi_isa_irq_to_gsi() may give wrong result. 361 */ 362 if (gsi < nr_legacy_irqs() && isa_irq_to_gsi[gsi] == gsi) 363 isa_irq_to_gsi[gsi] = ACPI_INVALID_GSI; 364 isa_irq_to_gsi[bus_irq] = gsi; 365 } 366 367 static int mp_config_acpi_gsi(struct device *dev, u32 gsi, int trigger, 368 int polarity) 369 { 370 #ifdef CONFIG_X86_MPPARSE 371 struct mpc_intsrc mp_irq; 372 struct pci_dev *pdev; 373 unsigned char number; 374 unsigned int devfn; 375 int ioapic; 376 u8 pin; 377 378 if (!acpi_ioapic) 379 return 0; 380 if (!dev || !dev_is_pci(dev)) 381 return 0; 382 383 pdev = to_pci_dev(dev); 384 number = pdev->bus->number; 385 devfn = pdev->devfn; 386 pin = pdev->pin; 387 /* print the entry should happen on mptable identically */ 388 mp_irq.type = MP_INTSRC; 389 mp_irq.irqtype = mp_INT; 390 mp_irq.irqflag = (trigger == ACPI_EDGE_SENSITIVE ? 4 : 0x0c) | 391 (polarity == ACPI_ACTIVE_HIGH ? 1 : 3); 392 mp_irq.srcbus = number; 393 mp_irq.srcbusirq = (((devfn >> 3) & 0x1f) << 2) | ((pin - 1) & 3); 394 ioapic = mp_find_ioapic(gsi); 395 mp_irq.dstapic = mpc_ioapic_id(ioapic); 396 mp_irq.dstirq = mp_find_ioapic_pin(ioapic, gsi); 397 398 mp_save_irq(&mp_irq); 399 #endif 400 return 0; 401 } 402 403 static int __init 404 acpi_parse_ioapic(struct acpi_subtable_header * header, const unsigned long end) 405 { 406 struct acpi_madt_io_apic *ioapic = NULL; 407 struct ioapic_domain_cfg cfg = { 408 .type = IOAPIC_DOMAIN_DYNAMIC, 409 .ops = &mp_ioapic_irqdomain_ops, 410 }; 411 412 ioapic = (struct acpi_madt_io_apic *)header; 413 414 if (BAD_MADT_ENTRY(ioapic, end)) 415 return -EINVAL; 416 417 acpi_table_print_madt_entry(header); 418 419 /* Statically assign IRQ numbers for IOAPICs hosting legacy IRQs */ 420 if (ioapic->global_irq_base < nr_legacy_irqs()) 421 cfg.type = IOAPIC_DOMAIN_LEGACY; 422 423 mp_register_ioapic(ioapic->id, ioapic->address, ioapic->global_irq_base, 424 &cfg); 425 426 return 0; 427 } 428 429 /* 430 * Parse Interrupt Source Override for the ACPI SCI 431 */ 432 static void __init acpi_sci_ioapic_setup(u8 bus_irq, u16 polarity, u16 trigger, u32 gsi) 433 { 434 if (trigger == 0) /* compatible SCI trigger is level */ 435 trigger = 3; 436 437 if (polarity == 0) /* compatible SCI polarity is low */ 438 polarity = 3; 439 440 /* Command-line over-ride via acpi_sci= */ 441 if (acpi_sci_flags & ACPI_MADT_TRIGGER_MASK) 442 trigger = (acpi_sci_flags & ACPI_MADT_TRIGGER_MASK) >> 2; 443 444 if (acpi_sci_flags & ACPI_MADT_POLARITY_MASK) 445 polarity = acpi_sci_flags & ACPI_MADT_POLARITY_MASK; 446 447 mp_override_legacy_irq(bus_irq, polarity, trigger, gsi); 448 449 /* 450 * stash over-ride to indicate we've been here 451 * and for later update of acpi_gbl_FADT 452 */ 453 acpi_sci_override_gsi = gsi; 454 return; 455 } 456 457 static int __init 458 acpi_parse_int_src_ovr(struct acpi_subtable_header * header, 459 const unsigned long end) 460 { 461 struct acpi_madt_interrupt_override *intsrc = NULL; 462 463 intsrc = (struct acpi_madt_interrupt_override *)header; 464 465 if (BAD_MADT_ENTRY(intsrc, end)) 466 return -EINVAL; 467 468 acpi_table_print_madt_entry(header); 469 470 if (intsrc->source_irq == acpi_gbl_FADT.sci_interrupt) { 471 acpi_sci_ioapic_setup(intsrc->source_irq, 472 intsrc->inti_flags & ACPI_MADT_POLARITY_MASK, 473 (intsrc->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2, 474 intsrc->global_irq); 475 return 0; 476 } 477 478 if (intsrc->source_irq == 0) { 479 if (acpi_skip_timer_override) { 480 printk(PREFIX "BIOS IRQ0 override ignored.\n"); 481 return 0; 482 } 483 484 if ((intsrc->global_irq == 2) && acpi_fix_pin2_polarity 485 && (intsrc->inti_flags & ACPI_MADT_POLARITY_MASK)) { 486 intsrc->inti_flags &= ~ACPI_MADT_POLARITY_MASK; 487 printk(PREFIX "BIOS IRQ0 pin2 override: forcing polarity to high active.\n"); 488 } 489 } 490 491 mp_override_legacy_irq(intsrc->source_irq, 492 intsrc->inti_flags & ACPI_MADT_POLARITY_MASK, 493 (intsrc->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2, 494 intsrc->global_irq); 495 496 return 0; 497 } 498 499 static int __init 500 acpi_parse_nmi_src(struct acpi_subtable_header * header, const unsigned long end) 501 { 502 struct acpi_madt_nmi_source *nmi_src = NULL; 503 504 nmi_src = (struct acpi_madt_nmi_source *)header; 505 506 if (BAD_MADT_ENTRY(nmi_src, end)) 507 return -EINVAL; 508 509 acpi_table_print_madt_entry(header); 510 511 /* TBD: Support nimsrc entries? */ 512 513 return 0; 514 } 515 516 #endif /* CONFIG_X86_IO_APIC */ 517 518 /* 519 * acpi_pic_sci_set_trigger() 520 * 521 * use ELCR to set PIC-mode trigger type for SCI 522 * 523 * If a PIC-mode SCI is not recognized or gives spurious IRQ7's 524 * it may require Edge Trigger -- use "acpi_sci=edge" 525 * 526 * Port 0x4d0-4d1 are ECLR1 and ECLR2, the Edge/Level Control Registers 527 * for the 8259 PIC. bit[n] = 1 means irq[n] is Level, otherwise Edge. 528 * ECLR1 is IRQs 0-7 (IRQ 0, 1, 2 must be 0) 529 * ECLR2 is IRQs 8-15 (IRQ 8, 13 must be 0) 530 */ 531 532 void __init acpi_pic_sci_set_trigger(unsigned int irq, u16 trigger) 533 { 534 unsigned int mask = 1 << irq; 535 unsigned int old, new; 536 537 /* Real old ELCR mask */ 538 old = inb(0x4d0) | (inb(0x4d1) << 8); 539 540 /* 541 * If we use ACPI to set PCI IRQs, then we should clear ELCR 542 * since we will set it correctly as we enable the PCI irq 543 * routing. 544 */ 545 new = acpi_noirq ? old : 0; 546 547 /* 548 * Update SCI information in the ELCR, it isn't in the PCI 549 * routing tables.. 550 */ 551 switch (trigger) { 552 case 1: /* Edge - clear */ 553 new &= ~mask; 554 break; 555 case 3: /* Level - set */ 556 new |= mask; 557 break; 558 } 559 560 if (old == new) 561 return; 562 563 printk(PREFIX "setting ELCR to %04x (from %04x)\n", new, old); 564 outb(new, 0x4d0); 565 outb(new >> 8, 0x4d1); 566 } 567 568 int acpi_gsi_to_irq(u32 gsi, unsigned int *irqp) 569 { 570 int rc, irq, trigger, polarity; 571 572 if (acpi_irq_model == ACPI_IRQ_MODEL_PIC) { 573 *irqp = gsi; 574 return 0; 575 } 576 577 rc = acpi_get_override_irq(gsi, &trigger, &polarity); 578 if (rc == 0) { 579 trigger = trigger ? ACPI_LEVEL_SENSITIVE : ACPI_EDGE_SENSITIVE; 580 polarity = polarity ? ACPI_ACTIVE_LOW : ACPI_ACTIVE_HIGH; 581 irq = acpi_register_gsi(NULL, gsi, trigger, polarity); 582 if (irq >= 0) { 583 *irqp = irq; 584 return 0; 585 } 586 } 587 588 return -1; 589 } 590 EXPORT_SYMBOL_GPL(acpi_gsi_to_irq); 591 592 int acpi_isa_irq_to_gsi(unsigned isa_irq, u32 *gsi) 593 { 594 if (isa_irq < nr_legacy_irqs() && 595 isa_irq_to_gsi[isa_irq] != ACPI_INVALID_GSI) { 596 *gsi = isa_irq_to_gsi[isa_irq]; 597 return 0; 598 } 599 600 return -1; 601 } 602 603 static int acpi_register_gsi_pic(struct device *dev, u32 gsi, 604 int trigger, int polarity) 605 { 606 #ifdef CONFIG_PCI 607 /* 608 * Make sure all (legacy) PCI IRQs are set as level-triggered. 609 */ 610 if (trigger == ACPI_LEVEL_SENSITIVE) 611 elcr_set_level_irq(gsi); 612 #endif 613 614 return gsi; 615 } 616 617 #ifdef CONFIG_X86_LOCAL_APIC 618 static int acpi_register_gsi_ioapic(struct device *dev, u32 gsi, 619 int trigger, int polarity) 620 { 621 int irq = gsi; 622 #ifdef CONFIG_X86_IO_APIC 623 int node; 624 struct irq_alloc_info info; 625 626 node = dev ? dev_to_node(dev) : NUMA_NO_NODE; 627 trigger = trigger == ACPI_EDGE_SENSITIVE ? 0 : 1; 628 polarity = polarity == ACPI_ACTIVE_HIGH ? 0 : 1; 629 ioapic_set_alloc_attr(&info, node, trigger, polarity); 630 631 mutex_lock(&acpi_ioapic_lock); 632 irq = mp_map_gsi_to_irq(gsi, IOAPIC_MAP_ALLOC, &info); 633 /* Don't set up the ACPI SCI because it's already set up */ 634 if (irq >= 0 && enable_update_mptable && 635 acpi_gbl_FADT.sci_interrupt != gsi) 636 mp_config_acpi_gsi(dev, gsi, trigger, polarity); 637 mutex_unlock(&acpi_ioapic_lock); 638 #endif 639 640 return irq; 641 } 642 643 static void acpi_unregister_gsi_ioapic(u32 gsi) 644 { 645 #ifdef CONFIG_X86_IO_APIC 646 int irq; 647 648 mutex_lock(&acpi_ioapic_lock); 649 irq = mp_map_gsi_to_irq(gsi, 0, NULL); 650 if (irq > 0) 651 mp_unmap_irq(irq); 652 mutex_unlock(&acpi_ioapic_lock); 653 #endif 654 } 655 #endif 656 657 int (*__acpi_register_gsi)(struct device *dev, u32 gsi, 658 int trigger, int polarity) = acpi_register_gsi_pic; 659 void (*__acpi_unregister_gsi)(u32 gsi) = NULL; 660 661 #ifdef CONFIG_ACPI_SLEEP 662 int (*acpi_suspend_lowlevel)(void) = x86_acpi_suspend_lowlevel; 663 #else 664 int (*acpi_suspend_lowlevel)(void); 665 #endif 666 667 /* 668 * success: return IRQ number (>=0) 669 * failure: return < 0 670 */ 671 int acpi_register_gsi(struct device *dev, u32 gsi, int trigger, int polarity) 672 { 673 return __acpi_register_gsi(dev, gsi, trigger, polarity); 674 } 675 EXPORT_SYMBOL_GPL(acpi_register_gsi); 676 677 void acpi_unregister_gsi(u32 gsi) 678 { 679 if (__acpi_unregister_gsi) 680 __acpi_unregister_gsi(gsi); 681 } 682 EXPORT_SYMBOL_GPL(acpi_unregister_gsi); 683 684 #ifdef CONFIG_X86_LOCAL_APIC 685 static void __init acpi_set_irq_model_ioapic(void) 686 { 687 acpi_irq_model = ACPI_IRQ_MODEL_IOAPIC; 688 __acpi_register_gsi = acpi_register_gsi_ioapic; 689 __acpi_unregister_gsi = acpi_unregister_gsi_ioapic; 690 acpi_ioapic = 1; 691 } 692 #endif 693 694 /* 695 * ACPI based hotplug support for CPU 696 */ 697 #ifdef CONFIG_ACPI_HOTPLUG_CPU 698 #include <acpi/processor.h> 699 700 static void acpi_map_cpu2node(acpi_handle handle, int cpu, int physid) 701 { 702 #ifdef CONFIG_ACPI_NUMA 703 int nid; 704 705 nid = acpi_get_node(handle); 706 if (nid != -1) { 707 set_apicid_to_node(physid, nid); 708 numa_set_node(cpu, nid); 709 } 710 #endif 711 } 712 713 static int _acpi_map_lsapic(acpi_handle handle, int physid, int *pcpu) 714 { 715 int cpu; 716 717 cpu = acpi_register_lapic(physid, ACPI_MADT_ENABLED); 718 if (cpu < 0) { 719 pr_info(PREFIX "Unable to map lapic to logical cpu number\n"); 720 return cpu; 721 } 722 723 acpi_processor_set_pdc(handle); 724 acpi_map_cpu2node(handle, cpu, physid); 725 726 *pcpu = cpu; 727 return 0; 728 } 729 730 /* wrapper to silence section mismatch warning */ 731 int __ref acpi_map_cpu(acpi_handle handle, phys_cpuid_t physid, int *pcpu) 732 { 733 return _acpi_map_lsapic(handle, physid, pcpu); 734 } 735 EXPORT_SYMBOL(acpi_map_cpu); 736 737 int acpi_unmap_cpu(int cpu) 738 { 739 #ifdef CONFIG_ACPI_NUMA 740 set_apicid_to_node(per_cpu(x86_cpu_to_apicid, cpu), NUMA_NO_NODE); 741 #endif 742 743 per_cpu(x86_cpu_to_apicid, cpu) = -1; 744 set_cpu_present(cpu, false); 745 num_processors--; 746 747 return (0); 748 } 749 EXPORT_SYMBOL(acpi_unmap_cpu); 750 #endif /* CONFIG_ACPI_HOTPLUG_CPU */ 751 752 int acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base) 753 { 754 int ret = -ENOSYS; 755 #ifdef CONFIG_ACPI_HOTPLUG_IOAPIC 756 int ioapic_id; 757 u64 addr; 758 struct ioapic_domain_cfg cfg = { 759 .type = IOAPIC_DOMAIN_DYNAMIC, 760 .ops = &mp_ioapic_irqdomain_ops, 761 }; 762 763 ioapic_id = acpi_get_ioapic_id(handle, gsi_base, &addr); 764 if (ioapic_id < 0) { 765 unsigned long long uid; 766 acpi_status status; 767 768 status = acpi_evaluate_integer(handle, METHOD_NAME__UID, 769 NULL, &uid); 770 if (ACPI_FAILURE(status)) { 771 acpi_handle_warn(handle, "failed to get IOAPIC ID.\n"); 772 return -EINVAL; 773 } 774 ioapic_id = (int)uid; 775 } 776 777 mutex_lock(&acpi_ioapic_lock); 778 ret = mp_register_ioapic(ioapic_id, phys_addr, gsi_base, &cfg); 779 mutex_unlock(&acpi_ioapic_lock); 780 #endif 781 782 return ret; 783 } 784 EXPORT_SYMBOL(acpi_register_ioapic); 785 786 int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base) 787 { 788 int ret = -ENOSYS; 789 790 #ifdef CONFIG_ACPI_HOTPLUG_IOAPIC 791 mutex_lock(&acpi_ioapic_lock); 792 ret = mp_unregister_ioapic(gsi_base); 793 mutex_unlock(&acpi_ioapic_lock); 794 #endif 795 796 return ret; 797 } 798 EXPORT_SYMBOL(acpi_unregister_ioapic); 799 800 /** 801 * acpi_ioapic_registered - Check whether IOAPIC assoicatied with @gsi_base 802 * has been registered 803 * @handle: ACPI handle of the IOAPIC deivce 804 * @gsi_base: GSI base associated with the IOAPIC 805 * 806 * Assume caller holds some type of lock to serialize acpi_ioapic_registered() 807 * with acpi_register_ioapic()/acpi_unregister_ioapic(). 808 */ 809 int acpi_ioapic_registered(acpi_handle handle, u32 gsi_base) 810 { 811 int ret = 0; 812 813 #ifdef CONFIG_ACPI_HOTPLUG_IOAPIC 814 mutex_lock(&acpi_ioapic_lock); 815 ret = mp_ioapic_registered(gsi_base); 816 mutex_unlock(&acpi_ioapic_lock); 817 #endif 818 819 return ret; 820 } 821 822 static int __init acpi_parse_sbf(struct acpi_table_header *table) 823 { 824 struct acpi_table_boot *sb = (struct acpi_table_boot *)table; 825 826 sbf_port = sb->cmos_index; /* Save CMOS port */ 827 828 return 0; 829 } 830 831 #ifdef CONFIG_HPET_TIMER 832 #include <asm/hpet.h> 833 834 static struct resource *hpet_res __initdata; 835 836 static int __init acpi_parse_hpet(struct acpi_table_header *table) 837 { 838 struct acpi_table_hpet *hpet_tbl = (struct acpi_table_hpet *)table; 839 840 if (hpet_tbl->address.space_id != ACPI_SPACE_MEM) { 841 printk(KERN_WARNING PREFIX "HPET timers must be located in " 842 "memory.\n"); 843 return -1; 844 } 845 846 hpet_address = hpet_tbl->address.address; 847 hpet_blockid = hpet_tbl->sequence; 848 849 /* 850 * Some broken BIOSes advertise HPET at 0x0. We really do not 851 * want to allocate a resource there. 852 */ 853 if (!hpet_address) { 854 printk(KERN_WARNING PREFIX 855 "HPET id: %#x base: %#lx is invalid\n", 856 hpet_tbl->id, hpet_address); 857 return 0; 858 } 859 #ifdef CONFIG_X86_64 860 /* 861 * Some even more broken BIOSes advertise HPET at 862 * 0xfed0000000000000 instead of 0xfed00000. Fix it up and add 863 * some noise: 864 */ 865 if (hpet_address == 0xfed0000000000000UL) { 866 if (!hpet_force_user) { 867 printk(KERN_WARNING PREFIX "HPET id: %#x " 868 "base: 0xfed0000000000000 is bogus\n " 869 "try hpet=force on the kernel command line to " 870 "fix it up to 0xfed00000.\n", hpet_tbl->id); 871 hpet_address = 0; 872 return 0; 873 } 874 printk(KERN_WARNING PREFIX 875 "HPET id: %#x base: 0xfed0000000000000 fixed up " 876 "to 0xfed00000.\n", hpet_tbl->id); 877 hpet_address >>= 32; 878 } 879 #endif 880 printk(KERN_INFO PREFIX "HPET id: %#x base: %#lx\n", 881 hpet_tbl->id, hpet_address); 882 883 /* 884 * Allocate and initialize the HPET firmware resource for adding into 885 * the resource tree during the lateinit timeframe. 886 */ 887 #define HPET_RESOURCE_NAME_SIZE 9 888 hpet_res = alloc_bootmem(sizeof(*hpet_res) + HPET_RESOURCE_NAME_SIZE); 889 890 hpet_res->name = (void *)&hpet_res[1]; 891 hpet_res->flags = IORESOURCE_MEM; 892 snprintf((char *)hpet_res->name, HPET_RESOURCE_NAME_SIZE, "HPET %u", 893 hpet_tbl->sequence); 894 895 hpet_res->start = hpet_address; 896 hpet_res->end = hpet_address + (1 * 1024) - 1; 897 898 return 0; 899 } 900 901 /* 902 * hpet_insert_resource inserts the HPET resources used into the resource 903 * tree. 904 */ 905 static __init int hpet_insert_resource(void) 906 { 907 if (!hpet_res) 908 return 1; 909 910 return insert_resource(&iomem_resource, hpet_res); 911 } 912 913 late_initcall(hpet_insert_resource); 914 915 #else 916 #define acpi_parse_hpet NULL 917 #endif 918 919 static int __init acpi_parse_fadt(struct acpi_table_header *table) 920 { 921 922 #ifdef CONFIG_X86_PM_TIMER 923 /* detect the location of the ACPI PM Timer */ 924 if (acpi_gbl_FADT.header.revision >= FADT2_REVISION_ID) { 925 /* FADT rev. 2 */ 926 if (acpi_gbl_FADT.xpm_timer_block.space_id != 927 ACPI_ADR_SPACE_SYSTEM_IO) 928 return 0; 929 930 pmtmr_ioport = acpi_gbl_FADT.xpm_timer_block.address; 931 /* 932 * "X" fields are optional extensions to the original V1.0 933 * fields, so we must selectively expand V1.0 fields if the 934 * corresponding X field is zero. 935 */ 936 if (!pmtmr_ioport) 937 pmtmr_ioport = acpi_gbl_FADT.pm_timer_block; 938 } else { 939 /* FADT rev. 1 */ 940 pmtmr_ioport = acpi_gbl_FADT.pm_timer_block; 941 } 942 if (pmtmr_ioport) 943 printk(KERN_INFO PREFIX "PM-Timer IO Port: %#x\n", 944 pmtmr_ioport); 945 #endif 946 return 0; 947 } 948 949 #ifdef CONFIG_X86_LOCAL_APIC 950 /* 951 * Parse LAPIC entries in MADT 952 * returns 0 on success, < 0 on error 953 */ 954 955 static int __init early_acpi_parse_madt_lapic_addr_ovr(void) 956 { 957 int count; 958 959 if (!cpu_has_apic) 960 return -ENODEV; 961 962 /* 963 * Note that the LAPIC address is obtained from the MADT (32-bit value) 964 * and (optionally) overriden by a LAPIC_ADDR_OVR entry (64-bit value). 965 */ 966 967 count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE, 968 acpi_parse_lapic_addr_ovr, 0); 969 if (count < 0) { 970 printk(KERN_ERR PREFIX 971 "Error parsing LAPIC address override entry\n"); 972 return count; 973 } 974 975 register_lapic_address(acpi_lapic_addr); 976 977 return count; 978 } 979 980 static int __init acpi_parse_madt_lapic_entries(void) 981 { 982 int count; 983 int x2count = 0; 984 985 if (!cpu_has_apic) 986 return -ENODEV; 987 988 /* 989 * Note that the LAPIC address is obtained from the MADT (32-bit value) 990 * and (optionally) overriden by a LAPIC_ADDR_OVR entry (64-bit value). 991 */ 992 993 count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE, 994 acpi_parse_lapic_addr_ovr, 0); 995 if (count < 0) { 996 printk(KERN_ERR PREFIX 997 "Error parsing LAPIC address override entry\n"); 998 return count; 999 } 1000 1001 register_lapic_address(acpi_lapic_addr); 1002 1003 count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_SAPIC, 1004 acpi_parse_sapic, MAX_LOCAL_APIC); 1005 1006 if (!count) { 1007 x2count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_X2APIC, 1008 acpi_parse_x2apic, MAX_LOCAL_APIC); 1009 count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC, 1010 acpi_parse_lapic, MAX_LOCAL_APIC); 1011 } 1012 if (!count && !x2count) { 1013 printk(KERN_ERR PREFIX "No LAPIC entries present\n"); 1014 /* TBD: Cleanup to allow fallback to MPS */ 1015 return -ENODEV; 1016 } else if (count < 0 || x2count < 0) { 1017 printk(KERN_ERR PREFIX "Error parsing LAPIC entry\n"); 1018 /* TBD: Cleanup to allow fallback to MPS */ 1019 return count; 1020 } 1021 1022 x2count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_X2APIC_NMI, 1023 acpi_parse_x2apic_nmi, 0); 1024 count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_NMI, 1025 acpi_parse_lapic_nmi, 0); 1026 if (count < 0 || x2count < 0) { 1027 printk(KERN_ERR PREFIX "Error parsing LAPIC NMI entry\n"); 1028 /* TBD: Cleanup to allow fallback to MPS */ 1029 return count; 1030 } 1031 return 0; 1032 } 1033 #endif /* CONFIG_X86_LOCAL_APIC */ 1034 1035 #ifdef CONFIG_X86_IO_APIC 1036 static void __init mp_config_acpi_legacy_irqs(void) 1037 { 1038 int i; 1039 struct mpc_intsrc mp_irq; 1040 1041 #ifdef CONFIG_EISA 1042 /* 1043 * Fabricate the legacy ISA bus (bus #31). 1044 */ 1045 mp_bus_id_to_type[MP_ISA_BUS] = MP_BUS_ISA; 1046 #endif 1047 set_bit(MP_ISA_BUS, mp_bus_not_pci); 1048 pr_debug("Bus #%d is ISA\n", MP_ISA_BUS); 1049 1050 /* 1051 * Use the default configuration for the IRQs 0-15. Unless 1052 * overridden by (MADT) interrupt source override entries. 1053 */ 1054 for (i = 0; i < nr_legacy_irqs(); i++) { 1055 int ioapic, pin; 1056 unsigned int dstapic; 1057 int idx; 1058 u32 gsi; 1059 1060 /* Locate the gsi that irq i maps to. */ 1061 if (acpi_isa_irq_to_gsi(i, &gsi)) 1062 continue; 1063 1064 /* 1065 * Locate the IOAPIC that manages the ISA IRQ. 1066 */ 1067 ioapic = mp_find_ioapic(gsi); 1068 if (ioapic < 0) 1069 continue; 1070 pin = mp_find_ioapic_pin(ioapic, gsi); 1071 dstapic = mpc_ioapic_id(ioapic); 1072 1073 for (idx = 0; idx < mp_irq_entries; idx++) { 1074 struct mpc_intsrc *irq = mp_irqs + idx; 1075 1076 /* Do we already have a mapping for this ISA IRQ? */ 1077 if (irq->srcbus == MP_ISA_BUS && irq->srcbusirq == i) 1078 break; 1079 1080 /* Do we already have a mapping for this IOAPIC pin */ 1081 if (irq->dstapic == dstapic && irq->dstirq == pin) 1082 break; 1083 } 1084 1085 if (idx != mp_irq_entries) { 1086 printk(KERN_DEBUG "ACPI: IRQ%d used by override.\n", i); 1087 continue; /* IRQ already used */ 1088 } 1089 1090 mp_irq.type = MP_INTSRC; 1091 mp_irq.irqflag = 0; /* Conforming */ 1092 mp_irq.srcbus = MP_ISA_BUS; 1093 mp_irq.dstapic = dstapic; 1094 mp_irq.irqtype = mp_INT; 1095 mp_irq.srcbusirq = i; /* Identity mapped */ 1096 mp_irq.dstirq = pin; 1097 1098 mp_save_irq(&mp_irq); 1099 } 1100 } 1101 1102 /* 1103 * Parse IOAPIC related entries in MADT 1104 * returns 0 on success, < 0 on error 1105 */ 1106 static int __init acpi_parse_madt_ioapic_entries(void) 1107 { 1108 int count; 1109 1110 /* 1111 * ACPI interpreter is required to complete interrupt setup, 1112 * so if it is off, don't enumerate the io-apics with ACPI. 1113 * If MPS is present, it will handle them, 1114 * otherwise the system will stay in PIC mode 1115 */ 1116 if (acpi_disabled || acpi_noirq) 1117 return -ENODEV; 1118 1119 if (!cpu_has_apic) 1120 return -ENODEV; 1121 1122 /* 1123 * if "noapic" boot option, don't look for IO-APICs 1124 */ 1125 if (skip_ioapic_setup) { 1126 printk(KERN_INFO PREFIX "Skipping IOAPIC probe " 1127 "due to 'noapic' option.\n"); 1128 return -ENODEV; 1129 } 1130 1131 count = acpi_table_parse_madt(ACPI_MADT_TYPE_IO_APIC, acpi_parse_ioapic, 1132 MAX_IO_APICS); 1133 if (!count) { 1134 printk(KERN_ERR PREFIX "No IOAPIC entries present\n"); 1135 return -ENODEV; 1136 } else if (count < 0) { 1137 printk(KERN_ERR PREFIX "Error parsing IOAPIC entry\n"); 1138 return count; 1139 } 1140 1141 count = acpi_table_parse_madt(ACPI_MADT_TYPE_INTERRUPT_OVERRIDE, 1142 acpi_parse_int_src_ovr, nr_irqs); 1143 if (count < 0) { 1144 printk(KERN_ERR PREFIX 1145 "Error parsing interrupt source overrides entry\n"); 1146 /* TBD: Cleanup to allow fallback to MPS */ 1147 return count; 1148 } 1149 1150 /* 1151 * If BIOS did not supply an INT_SRC_OVR for the SCI 1152 * pretend we got one so we can set the SCI flags. 1153 */ 1154 if (!acpi_sci_override_gsi) 1155 acpi_sci_ioapic_setup(acpi_gbl_FADT.sci_interrupt, 0, 0, 1156 acpi_gbl_FADT.sci_interrupt); 1157 1158 /* Fill in identity legacy mappings where no override */ 1159 mp_config_acpi_legacy_irqs(); 1160 1161 count = acpi_table_parse_madt(ACPI_MADT_TYPE_NMI_SOURCE, 1162 acpi_parse_nmi_src, nr_irqs); 1163 if (count < 0) { 1164 printk(KERN_ERR PREFIX "Error parsing NMI SRC entry\n"); 1165 /* TBD: Cleanup to allow fallback to MPS */ 1166 return count; 1167 } 1168 1169 return 0; 1170 } 1171 #else 1172 static inline int acpi_parse_madt_ioapic_entries(void) 1173 { 1174 return -1; 1175 } 1176 #endif /* !CONFIG_X86_IO_APIC */ 1177 1178 static void __init early_acpi_process_madt(void) 1179 { 1180 #ifdef CONFIG_X86_LOCAL_APIC 1181 int error; 1182 1183 if (!acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) { 1184 1185 /* 1186 * Parse MADT LAPIC entries 1187 */ 1188 error = early_acpi_parse_madt_lapic_addr_ovr(); 1189 if (!error) { 1190 acpi_lapic = 1; 1191 smp_found_config = 1; 1192 } 1193 if (error == -EINVAL) { 1194 /* 1195 * Dell Precision Workstation 410, 610 come here. 1196 */ 1197 printk(KERN_ERR PREFIX 1198 "Invalid BIOS MADT, disabling ACPI\n"); 1199 disable_acpi(); 1200 } 1201 } 1202 #endif 1203 } 1204 1205 static void __init acpi_process_madt(void) 1206 { 1207 #ifdef CONFIG_X86_LOCAL_APIC 1208 int error; 1209 1210 if (!acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) { 1211 1212 /* 1213 * Parse MADT LAPIC entries 1214 */ 1215 error = acpi_parse_madt_lapic_entries(); 1216 if (!error) { 1217 acpi_lapic = 1; 1218 1219 /* 1220 * Parse MADT IO-APIC entries 1221 */ 1222 mutex_lock(&acpi_ioapic_lock); 1223 error = acpi_parse_madt_ioapic_entries(); 1224 mutex_unlock(&acpi_ioapic_lock); 1225 if (!error) { 1226 acpi_set_irq_model_ioapic(); 1227 1228 smp_found_config = 1; 1229 } 1230 } 1231 if (error == -EINVAL) { 1232 /* 1233 * Dell Precision Workstation 410, 610 come here. 1234 */ 1235 printk(KERN_ERR PREFIX 1236 "Invalid BIOS MADT, disabling ACPI\n"); 1237 disable_acpi(); 1238 } 1239 } else { 1240 /* 1241 * ACPI found no MADT, and so ACPI wants UP PIC mode. 1242 * In the event an MPS table was found, forget it. 1243 * Boot with "acpi=off" to use MPS on such a system. 1244 */ 1245 if (smp_found_config) { 1246 printk(KERN_WARNING PREFIX 1247 "No APIC-table, disabling MPS\n"); 1248 smp_found_config = 0; 1249 } 1250 } 1251 1252 /* 1253 * ACPI supports both logical (e.g. Hyper-Threading) and physical 1254 * processors, where MPS only supports physical. 1255 */ 1256 if (acpi_lapic && acpi_ioapic) 1257 printk(KERN_INFO "Using ACPI (MADT) for SMP configuration " 1258 "information\n"); 1259 else if (acpi_lapic) 1260 printk(KERN_INFO "Using ACPI for processor (LAPIC) " 1261 "configuration information\n"); 1262 #endif 1263 return; 1264 } 1265 1266 static int __init disable_acpi_irq(const struct dmi_system_id *d) 1267 { 1268 if (!acpi_force) { 1269 printk(KERN_NOTICE "%s detected: force use of acpi=noirq\n", 1270 d->ident); 1271 acpi_noirq_set(); 1272 } 1273 return 0; 1274 } 1275 1276 static int __init disable_acpi_pci(const struct dmi_system_id *d) 1277 { 1278 if (!acpi_force) { 1279 printk(KERN_NOTICE "%s detected: force use of pci=noacpi\n", 1280 d->ident); 1281 acpi_disable_pci(); 1282 } 1283 return 0; 1284 } 1285 1286 static int __init dmi_disable_acpi(const struct dmi_system_id *d) 1287 { 1288 if (!acpi_force) { 1289 printk(KERN_NOTICE "%s detected: acpi off\n", d->ident); 1290 disable_acpi(); 1291 } else { 1292 printk(KERN_NOTICE 1293 "Warning: DMI blacklist says broken, but acpi forced\n"); 1294 } 1295 return 0; 1296 } 1297 1298 /* 1299 * Force ignoring BIOS IRQ0 override 1300 */ 1301 static int __init dmi_ignore_irq0_timer_override(const struct dmi_system_id *d) 1302 { 1303 if (!acpi_skip_timer_override) { 1304 pr_notice("%s detected: Ignoring BIOS IRQ0 override\n", 1305 d->ident); 1306 acpi_skip_timer_override = 1; 1307 } 1308 return 0; 1309 } 1310 1311 /* 1312 * ACPI offers an alternative platform interface model that removes 1313 * ACPI hardware requirements for platforms that do not implement 1314 * the PC Architecture. 1315 * 1316 * We initialize the Hardware-reduced ACPI model here: 1317 */ 1318 static void __init acpi_reduced_hw_init(void) 1319 { 1320 if (acpi_gbl_reduced_hardware) { 1321 /* 1322 * Override x86_init functions and bypass legacy pic 1323 * in Hardware-reduced ACPI mode 1324 */ 1325 x86_init.timers.timer_init = x86_init_noop; 1326 x86_init.irqs.pre_vector_init = x86_init_noop; 1327 legacy_pic = &null_legacy_pic; 1328 } 1329 } 1330 1331 /* 1332 * If your system is blacklisted here, but you find that acpi=force 1333 * works for you, please contact linux-acpi@vger.kernel.org 1334 */ 1335 static struct dmi_system_id __initdata acpi_dmi_table[] = { 1336 /* 1337 * Boxes that need ACPI disabled 1338 */ 1339 { 1340 .callback = dmi_disable_acpi, 1341 .ident = "IBM Thinkpad", 1342 .matches = { 1343 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), 1344 DMI_MATCH(DMI_BOARD_NAME, "2629H1G"), 1345 }, 1346 }, 1347 1348 /* 1349 * Boxes that need ACPI PCI IRQ routing disabled 1350 */ 1351 { 1352 .callback = disable_acpi_irq, 1353 .ident = "ASUS A7V", 1354 .matches = { 1355 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC"), 1356 DMI_MATCH(DMI_BOARD_NAME, "<A7V>"), 1357 /* newer BIOS, Revision 1011, does work */ 1358 DMI_MATCH(DMI_BIOS_VERSION, 1359 "ASUS A7V ACPI BIOS Revision 1007"), 1360 }, 1361 }, 1362 { 1363 /* 1364 * Latest BIOS for IBM 600E (1.16) has bad pcinum 1365 * for LPC bridge, which is needed for the PCI 1366 * interrupt links to work. DSDT fix is in bug 5966. 1367 * 2645, 2646 model numbers are shared with 600/600E/600X 1368 */ 1369 .callback = disable_acpi_irq, 1370 .ident = "IBM Thinkpad 600 Series 2645", 1371 .matches = { 1372 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), 1373 DMI_MATCH(DMI_BOARD_NAME, "2645"), 1374 }, 1375 }, 1376 { 1377 .callback = disable_acpi_irq, 1378 .ident = "IBM Thinkpad 600 Series 2646", 1379 .matches = { 1380 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), 1381 DMI_MATCH(DMI_BOARD_NAME, "2646"), 1382 }, 1383 }, 1384 /* 1385 * Boxes that need ACPI PCI IRQ routing and PCI scan disabled 1386 */ 1387 { /* _BBN 0 bug */ 1388 .callback = disable_acpi_pci, 1389 .ident = "ASUS PR-DLS", 1390 .matches = { 1391 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."), 1392 DMI_MATCH(DMI_BOARD_NAME, "PR-DLS"), 1393 DMI_MATCH(DMI_BIOS_VERSION, 1394 "ASUS PR-DLS ACPI BIOS Revision 1010"), 1395 DMI_MATCH(DMI_BIOS_DATE, "03/21/2003") 1396 }, 1397 }, 1398 { 1399 .callback = disable_acpi_pci, 1400 .ident = "Acer TravelMate 36x Laptop", 1401 .matches = { 1402 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 1403 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 360"), 1404 }, 1405 }, 1406 {} 1407 }; 1408 1409 /* second table for DMI checks that should run after early-quirks */ 1410 static struct dmi_system_id __initdata acpi_dmi_table_late[] = { 1411 /* 1412 * HP laptops which use a DSDT reporting as HP/SB400/10000, 1413 * which includes some code which overrides all temperature 1414 * trip points to 16C if the INTIN2 input of the I/O APIC 1415 * is enabled. This input is incorrectly designated the 1416 * ISA IRQ 0 via an interrupt source override even though 1417 * it is wired to the output of the master 8259A and INTIN0 1418 * is not connected at all. Force ignoring BIOS IRQ0 1419 * override in that cases. 1420 */ 1421 { 1422 .callback = dmi_ignore_irq0_timer_override, 1423 .ident = "HP nx6115 laptop", 1424 .matches = { 1425 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), 1426 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6115"), 1427 }, 1428 }, 1429 { 1430 .callback = dmi_ignore_irq0_timer_override, 1431 .ident = "HP NX6125 laptop", 1432 .matches = { 1433 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), 1434 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6125"), 1435 }, 1436 }, 1437 { 1438 .callback = dmi_ignore_irq0_timer_override, 1439 .ident = "HP NX6325 laptop", 1440 .matches = { 1441 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), 1442 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6325"), 1443 }, 1444 }, 1445 { 1446 .callback = dmi_ignore_irq0_timer_override, 1447 .ident = "HP 6715b laptop", 1448 .matches = { 1449 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), 1450 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq 6715b"), 1451 }, 1452 }, 1453 { 1454 .callback = dmi_ignore_irq0_timer_override, 1455 .ident = "FUJITSU SIEMENS", 1456 .matches = { 1457 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"), 1458 DMI_MATCH(DMI_PRODUCT_NAME, "AMILO PRO V2030"), 1459 }, 1460 }, 1461 {} 1462 }; 1463 1464 /* 1465 * acpi_boot_table_init() and acpi_boot_init() 1466 * called from setup_arch(), always. 1467 * 1. checksums all tables 1468 * 2. enumerates lapics 1469 * 3. enumerates io-apics 1470 * 1471 * acpi_table_init() is separate to allow reading SRAT without 1472 * other side effects. 1473 * 1474 * side effects of acpi_boot_init: 1475 * acpi_lapic = 1 if LAPIC found 1476 * acpi_ioapic = 1 if IOAPIC found 1477 * if (acpi_lapic && acpi_ioapic) smp_found_config = 1; 1478 * if acpi_blacklisted() acpi_disabled = 1; 1479 * acpi_irq_model=... 1480 * ... 1481 */ 1482 1483 void __init acpi_boot_table_init(void) 1484 { 1485 dmi_check_system(acpi_dmi_table); 1486 1487 /* 1488 * If acpi_disabled, bail out 1489 */ 1490 if (acpi_disabled) 1491 return; 1492 1493 /* 1494 * Initialize the ACPI boot-time table parser. 1495 */ 1496 if (acpi_table_init()) { 1497 disable_acpi(); 1498 return; 1499 } 1500 1501 acpi_table_parse(ACPI_SIG_BOOT, acpi_parse_sbf); 1502 1503 /* 1504 * blacklist may disable ACPI entirely 1505 */ 1506 if (acpi_blacklisted()) { 1507 if (acpi_force) { 1508 printk(KERN_WARNING PREFIX "acpi=force override\n"); 1509 } else { 1510 printk(KERN_WARNING PREFIX "Disabling ACPI support\n"); 1511 disable_acpi(); 1512 return; 1513 } 1514 } 1515 } 1516 1517 int __init early_acpi_boot_init(void) 1518 { 1519 /* 1520 * If acpi_disabled, bail out 1521 */ 1522 if (acpi_disabled) 1523 return 1; 1524 1525 /* 1526 * Process the Multiple APIC Description Table (MADT), if present 1527 */ 1528 early_acpi_process_madt(); 1529 1530 /* 1531 * Hardware-reduced ACPI mode initialization: 1532 */ 1533 acpi_reduced_hw_init(); 1534 1535 return 0; 1536 } 1537 1538 int __init acpi_boot_init(void) 1539 { 1540 /* those are executed after early-quirks are executed */ 1541 dmi_check_system(acpi_dmi_table_late); 1542 1543 /* 1544 * If acpi_disabled, bail out 1545 */ 1546 if (acpi_disabled) 1547 return 1; 1548 1549 acpi_table_parse(ACPI_SIG_BOOT, acpi_parse_sbf); 1550 1551 /* 1552 * set sci_int and PM timer address 1553 */ 1554 acpi_table_parse(ACPI_SIG_FADT, acpi_parse_fadt); 1555 1556 /* 1557 * Process the Multiple APIC Description Table (MADT), if present 1558 */ 1559 acpi_process_madt(); 1560 1561 acpi_table_parse(ACPI_SIG_HPET, acpi_parse_hpet); 1562 1563 if (!acpi_noirq) 1564 x86_init.pci.init = pci_acpi_init; 1565 1566 return 0; 1567 } 1568 1569 static int __init parse_acpi(char *arg) 1570 { 1571 if (!arg) 1572 return -EINVAL; 1573 1574 /* "acpi=off" disables both ACPI table parsing and interpreter */ 1575 if (strcmp(arg, "off") == 0) { 1576 disable_acpi(); 1577 } 1578 /* acpi=force to over-ride black-list */ 1579 else if (strcmp(arg, "force") == 0) { 1580 acpi_force = 1; 1581 acpi_disabled = 0; 1582 } 1583 /* acpi=strict disables out-of-spec workarounds */ 1584 else if (strcmp(arg, "strict") == 0) { 1585 acpi_strict = 1; 1586 } 1587 /* acpi=rsdt use RSDT instead of XSDT */ 1588 else if (strcmp(arg, "rsdt") == 0) { 1589 acpi_gbl_do_not_use_xsdt = TRUE; 1590 } 1591 /* "acpi=noirq" disables ACPI interrupt routing */ 1592 else if (strcmp(arg, "noirq") == 0) { 1593 acpi_noirq_set(); 1594 } 1595 /* "acpi=copy_dsdt" copys DSDT */ 1596 else if (strcmp(arg, "copy_dsdt") == 0) { 1597 acpi_gbl_copy_dsdt_locally = 1; 1598 } 1599 /* "acpi=nocmcff" disables FF mode for corrected errors */ 1600 else if (strcmp(arg, "nocmcff") == 0) { 1601 acpi_disable_cmcff = 1; 1602 } else { 1603 /* Core will printk when we return error. */ 1604 return -EINVAL; 1605 } 1606 return 0; 1607 } 1608 early_param("acpi", parse_acpi); 1609 1610 /* FIXME: Using pci= for an ACPI parameter is a travesty. */ 1611 static int __init parse_pci(char *arg) 1612 { 1613 if (arg && strcmp(arg, "noacpi") == 0) 1614 acpi_disable_pci(); 1615 return 0; 1616 } 1617 early_param("pci", parse_pci); 1618 1619 int __init acpi_mps_check(void) 1620 { 1621 #if defined(CONFIG_X86_LOCAL_APIC) && !defined(CONFIG_X86_MPPARSE) 1622 /* mptable code is not built-in*/ 1623 if (acpi_disabled || acpi_noirq) { 1624 printk(KERN_WARNING "MPS support code is not built-in.\n" 1625 "Using acpi=off or acpi=noirq or pci=noacpi " 1626 "may have problem\n"); 1627 return 1; 1628 } 1629 #endif 1630 return 0; 1631 } 1632 1633 #ifdef CONFIG_X86_IO_APIC 1634 static int __init parse_acpi_skip_timer_override(char *arg) 1635 { 1636 acpi_skip_timer_override = 1; 1637 return 0; 1638 } 1639 early_param("acpi_skip_timer_override", parse_acpi_skip_timer_override); 1640 1641 static int __init parse_acpi_use_timer_override(char *arg) 1642 { 1643 acpi_use_timer_override = 1; 1644 return 0; 1645 } 1646 early_param("acpi_use_timer_override", parse_acpi_use_timer_override); 1647 #endif /* CONFIG_X86_IO_APIC */ 1648 1649 static int __init setup_acpi_sci(char *s) 1650 { 1651 if (!s) 1652 return -EINVAL; 1653 if (!strcmp(s, "edge")) 1654 acpi_sci_flags = ACPI_MADT_TRIGGER_EDGE | 1655 (acpi_sci_flags & ~ACPI_MADT_TRIGGER_MASK); 1656 else if (!strcmp(s, "level")) 1657 acpi_sci_flags = ACPI_MADT_TRIGGER_LEVEL | 1658 (acpi_sci_flags & ~ACPI_MADT_TRIGGER_MASK); 1659 else if (!strcmp(s, "high")) 1660 acpi_sci_flags = ACPI_MADT_POLARITY_ACTIVE_HIGH | 1661 (acpi_sci_flags & ~ACPI_MADT_POLARITY_MASK); 1662 else if (!strcmp(s, "low")) 1663 acpi_sci_flags = ACPI_MADT_POLARITY_ACTIVE_LOW | 1664 (acpi_sci_flags & ~ACPI_MADT_POLARITY_MASK); 1665 else 1666 return -EINVAL; 1667 return 0; 1668 } 1669 early_param("acpi_sci", setup_acpi_sci); 1670 1671 int __acpi_acquire_global_lock(unsigned int *lock) 1672 { 1673 unsigned int old, new, val; 1674 do { 1675 old = *lock; 1676 new = (((old & ~0x3) + 2) + ((old >> 1) & 0x1)); 1677 val = cmpxchg(lock, old, new); 1678 } while (unlikely (val != old)); 1679 return (new < 3) ? -1 : 0; 1680 } 1681 1682 int __acpi_release_global_lock(unsigned int *lock) 1683 { 1684 unsigned int old, new, val; 1685 do { 1686 old = *lock; 1687 new = old & ~0x3; 1688 val = cmpxchg(lock, old, new); 1689 } while (unlikely (val != old)); 1690 return old & 0x1; 1691 } 1692 1693 void __init arch_reserve_mem_area(acpi_physical_address addr, size_t size) 1694 { 1695 e820_add_region(addr, size, E820_ACPI); 1696 update_e820(); 1697 } 1698