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/pci_x86.h> 40 #include <asm/pgtable.h> 41 #include <asm/io_apic.h> 42 #include <asm/apic.h> 43 #include <asm/io.h> 44 #include <asm/mpspec.h> 45 #include <asm/smp.h> 46 47 #include "sleep.h" /* To include x86_acpi_suspend_lowlevel */ 48 static int __initdata acpi_force = 0; 49 int acpi_disabled; 50 EXPORT_SYMBOL(acpi_disabled); 51 52 #ifdef CONFIG_X86_64 53 # include <asm/proto.h> 54 #endif /* X86 */ 55 56 #define BAD_MADT_ENTRY(entry, end) ( \ 57 (!entry) || (unsigned long)entry + sizeof(*entry) > end || \ 58 ((struct acpi_subtable_header *)entry)->length < sizeof(*entry)) 59 60 #define PREFIX "ACPI: " 61 62 int acpi_noirq; /* skip ACPI IRQ initialization */ 63 int acpi_pci_disabled; /* skip ACPI PCI scan and IRQ initialization */ 64 EXPORT_SYMBOL(acpi_pci_disabled); 65 66 int acpi_lapic; 67 int acpi_ioapic; 68 int acpi_strict; 69 int acpi_disable_cmcff; 70 71 u8 acpi_sci_flags __initdata; 72 int acpi_sci_override_gsi __initdata; 73 int acpi_skip_timer_override __initdata; 74 int acpi_use_timer_override __initdata; 75 int acpi_fix_pin2_polarity __initdata; 76 77 #ifdef CONFIG_X86_LOCAL_APIC 78 static u64 acpi_lapic_addr __initdata = APIC_DEFAULT_PHYS_BASE; 79 #endif 80 81 #ifndef __HAVE_ARCH_CMPXCHG 82 #warning ACPI uses CMPXCHG, i486 and later hardware 83 #endif 84 85 /* -------------------------------------------------------------------------- 86 Boot-time Configuration 87 -------------------------------------------------------------------------- */ 88 89 /* 90 * The default interrupt routing model is PIC (8259). This gets 91 * overridden if IOAPICs are enumerated (below). 92 */ 93 enum acpi_irq_model_id acpi_irq_model = ACPI_IRQ_MODEL_PIC; 94 95 96 /* 97 * ISA irqs by default are the first 16 gsis but can be 98 * any gsi as specified by an interrupt source override. 99 */ 100 static u32 isa_irq_to_gsi[NR_IRQS_LEGACY] __read_mostly = { 101 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 102 }; 103 104 static unsigned int gsi_to_irq(unsigned int gsi) 105 { 106 unsigned int irq = gsi + NR_IRQS_LEGACY; 107 unsigned int i; 108 109 for (i = 0; i < NR_IRQS_LEGACY; i++) { 110 if (isa_irq_to_gsi[i] == gsi) { 111 return i; 112 } 113 } 114 115 /* Provide an identity mapping of gsi == irq 116 * except on truly weird platforms that have 117 * non isa irqs in the first 16 gsis. 118 */ 119 if (gsi >= NR_IRQS_LEGACY) 120 irq = gsi; 121 else 122 irq = gsi_top + gsi; 123 124 return irq; 125 } 126 127 static u32 irq_to_gsi(int irq) 128 { 129 unsigned int gsi; 130 131 if (irq < NR_IRQS_LEGACY) 132 gsi = isa_irq_to_gsi[irq]; 133 else if (irq < gsi_top) 134 gsi = irq; 135 else if (irq < (gsi_top + NR_IRQS_LEGACY)) 136 gsi = irq - gsi_top; 137 else 138 gsi = 0xffffffff; 139 140 return gsi; 141 } 142 143 /* 144 * This is just a simple wrapper around early_ioremap(), 145 * with sanity checks for phys == 0 and size == 0. 146 */ 147 char *__init __acpi_map_table(unsigned long phys, unsigned long size) 148 { 149 150 if (!phys || !size) 151 return NULL; 152 153 return early_ioremap(phys, size); 154 } 155 156 void __init __acpi_unmap_table(char *map, unsigned long size) 157 { 158 if (!map || !size) 159 return; 160 161 early_iounmap(map, size); 162 } 163 164 #ifdef CONFIG_X86_LOCAL_APIC 165 static int __init acpi_parse_madt(struct acpi_table_header *table) 166 { 167 struct acpi_table_madt *madt = NULL; 168 169 if (!cpu_has_apic) 170 return -EINVAL; 171 172 madt = (struct acpi_table_madt *)table; 173 if (!madt) { 174 printk(KERN_WARNING PREFIX "Unable to map MADT\n"); 175 return -ENODEV; 176 } 177 178 if (madt->address) { 179 acpi_lapic_addr = (u64) madt->address; 180 181 printk(KERN_DEBUG PREFIX "Local APIC address 0x%08x\n", 182 madt->address); 183 } 184 185 default_acpi_madt_oem_check(madt->header.oem_id, 186 madt->header.oem_table_id); 187 188 return 0; 189 } 190 191 /** 192 * acpi_register_lapic - register a local apic and generates a logic cpu number 193 * @id: local apic id to register 194 * @enabled: this cpu is enabled or not 195 * 196 * Returns the logic cpu number which maps to the local apic 197 */ 198 static int acpi_register_lapic(int id, u8 enabled) 199 { 200 unsigned int ver = 0; 201 202 if (id >= MAX_LOCAL_APIC) { 203 printk(KERN_INFO PREFIX "skipped apicid that is too big\n"); 204 return -EINVAL; 205 } 206 207 if (!enabled) { 208 ++disabled_cpus; 209 return -EINVAL; 210 } 211 212 if (boot_cpu_physical_apicid != -1U) 213 ver = apic_version[boot_cpu_physical_apicid]; 214 215 return generic_processor_info(id, ver); 216 } 217 218 static int __init 219 acpi_parse_x2apic(struct acpi_subtable_header *header, const unsigned long end) 220 { 221 struct acpi_madt_local_x2apic *processor = NULL; 222 int apic_id; 223 u8 enabled; 224 225 processor = (struct acpi_madt_local_x2apic *)header; 226 227 if (BAD_MADT_ENTRY(processor, end)) 228 return -EINVAL; 229 230 acpi_table_print_madt_entry(header); 231 232 apic_id = processor->local_apic_id; 233 enabled = processor->lapic_flags & ACPI_MADT_ENABLED; 234 #ifdef CONFIG_X86_X2APIC 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 if (!apic->apic_id_valid(apic_id) && enabled) 243 printk(KERN_WARNING PREFIX "x2apic entry ignored\n"); 244 else 245 acpi_register_lapic(apic_id, enabled); 246 #else 247 printk(KERN_WARNING PREFIX "x2apic entry ignored\n"); 248 #endif 249 250 return 0; 251 } 252 253 static int __init 254 acpi_parse_lapic(struct acpi_subtable_header * header, const unsigned long end) 255 { 256 struct acpi_madt_local_apic *processor = NULL; 257 258 processor = (struct acpi_madt_local_apic *)header; 259 260 if (BAD_MADT_ENTRY(processor, end)) 261 return -EINVAL; 262 263 acpi_table_print_madt_entry(header); 264 265 /* 266 * We need to register disabled CPU as well to permit 267 * counting disabled CPUs. This allows us to size 268 * cpus_possible_map more accurately, to permit 269 * to not preallocating memory for all NR_CPUS 270 * when we use CPU hotplug. 271 */ 272 acpi_register_lapic(processor->id, /* APIC ID */ 273 processor->lapic_flags & ACPI_MADT_ENABLED); 274 275 return 0; 276 } 277 278 static int __init 279 acpi_parse_sapic(struct acpi_subtable_header *header, const unsigned long end) 280 { 281 struct acpi_madt_local_sapic *processor = NULL; 282 283 processor = (struct acpi_madt_local_sapic *)header; 284 285 if (BAD_MADT_ENTRY(processor, end)) 286 return -EINVAL; 287 288 acpi_table_print_madt_entry(header); 289 290 acpi_register_lapic((processor->id << 8) | processor->eid,/* APIC ID */ 291 processor->lapic_flags & ACPI_MADT_ENABLED); 292 293 return 0; 294 } 295 296 static int __init 297 acpi_parse_lapic_addr_ovr(struct acpi_subtable_header * header, 298 const unsigned long end) 299 { 300 struct acpi_madt_local_apic_override *lapic_addr_ovr = NULL; 301 302 lapic_addr_ovr = (struct acpi_madt_local_apic_override *)header; 303 304 if (BAD_MADT_ENTRY(lapic_addr_ovr, end)) 305 return -EINVAL; 306 307 acpi_lapic_addr = lapic_addr_ovr->address; 308 309 return 0; 310 } 311 312 static int __init 313 acpi_parse_x2apic_nmi(struct acpi_subtable_header *header, 314 const unsigned long end) 315 { 316 struct acpi_madt_local_x2apic_nmi *x2apic_nmi = NULL; 317 318 x2apic_nmi = (struct acpi_madt_local_x2apic_nmi *)header; 319 320 if (BAD_MADT_ENTRY(x2apic_nmi, end)) 321 return -EINVAL; 322 323 acpi_table_print_madt_entry(header); 324 325 if (x2apic_nmi->lint != 1) 326 printk(KERN_WARNING PREFIX "NMI not connected to LINT 1!\n"); 327 328 return 0; 329 } 330 331 static int __init 332 acpi_parse_lapic_nmi(struct acpi_subtable_header * header, const unsigned long end) 333 { 334 struct acpi_madt_local_apic_nmi *lapic_nmi = NULL; 335 336 lapic_nmi = (struct acpi_madt_local_apic_nmi *)header; 337 338 if (BAD_MADT_ENTRY(lapic_nmi, end)) 339 return -EINVAL; 340 341 acpi_table_print_madt_entry(header); 342 343 if (lapic_nmi->lint != 1) 344 printk(KERN_WARNING PREFIX "NMI not connected to LINT 1!\n"); 345 346 return 0; 347 } 348 349 #endif /*CONFIG_X86_LOCAL_APIC */ 350 351 #ifdef CONFIG_X86_IO_APIC 352 353 static int __init 354 acpi_parse_ioapic(struct acpi_subtable_header * header, const unsigned long end) 355 { 356 struct acpi_madt_io_apic *ioapic = NULL; 357 358 ioapic = (struct acpi_madt_io_apic *)header; 359 360 if (BAD_MADT_ENTRY(ioapic, end)) 361 return -EINVAL; 362 363 acpi_table_print_madt_entry(header); 364 365 mp_register_ioapic(ioapic->id, 366 ioapic->address, ioapic->global_irq_base); 367 368 return 0; 369 } 370 371 /* 372 * Parse Interrupt Source Override for the ACPI SCI 373 */ 374 static void __init acpi_sci_ioapic_setup(u8 bus_irq, u16 polarity, u16 trigger, u32 gsi) 375 { 376 if (trigger == 0) /* compatible SCI trigger is level */ 377 trigger = 3; 378 379 if (polarity == 0) /* compatible SCI polarity is low */ 380 polarity = 3; 381 382 /* Command-line over-ride via acpi_sci= */ 383 if (acpi_sci_flags & ACPI_MADT_TRIGGER_MASK) 384 trigger = (acpi_sci_flags & ACPI_MADT_TRIGGER_MASK) >> 2; 385 386 if (acpi_sci_flags & ACPI_MADT_POLARITY_MASK) 387 polarity = acpi_sci_flags & ACPI_MADT_POLARITY_MASK; 388 389 /* 390 * mp_config_acpi_legacy_irqs() already setup IRQs < 16 391 * If GSI is < 16, this will update its flags, 392 * else it will create a new mp_irqs[] entry. 393 */ 394 mp_override_legacy_irq(bus_irq, polarity, trigger, gsi); 395 396 /* 397 * stash over-ride to indicate we've been here 398 * and for later update of acpi_gbl_FADT 399 */ 400 acpi_sci_override_gsi = gsi; 401 return; 402 } 403 404 static int __init 405 acpi_parse_int_src_ovr(struct acpi_subtable_header * header, 406 const unsigned long end) 407 { 408 struct acpi_madt_interrupt_override *intsrc = NULL; 409 410 intsrc = (struct acpi_madt_interrupt_override *)header; 411 412 if (BAD_MADT_ENTRY(intsrc, end)) 413 return -EINVAL; 414 415 acpi_table_print_madt_entry(header); 416 417 if (intsrc->source_irq == acpi_gbl_FADT.sci_interrupt) { 418 acpi_sci_ioapic_setup(intsrc->source_irq, 419 intsrc->inti_flags & ACPI_MADT_POLARITY_MASK, 420 (intsrc->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2, 421 intsrc->global_irq); 422 return 0; 423 } 424 425 if (intsrc->source_irq == 0) { 426 if (acpi_skip_timer_override) { 427 printk(PREFIX "BIOS IRQ0 override ignored.\n"); 428 return 0; 429 } 430 431 if ((intsrc->global_irq == 2) && acpi_fix_pin2_polarity 432 && (intsrc->inti_flags & ACPI_MADT_POLARITY_MASK)) { 433 intsrc->inti_flags &= ~ACPI_MADT_POLARITY_MASK; 434 printk(PREFIX "BIOS IRQ0 pin2 override: forcing polarity to high active.\n"); 435 } 436 } 437 438 mp_override_legacy_irq(intsrc->source_irq, 439 intsrc->inti_flags & ACPI_MADT_POLARITY_MASK, 440 (intsrc->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2, 441 intsrc->global_irq); 442 443 return 0; 444 } 445 446 static int __init 447 acpi_parse_nmi_src(struct acpi_subtable_header * header, const unsigned long end) 448 { 449 struct acpi_madt_nmi_source *nmi_src = NULL; 450 451 nmi_src = (struct acpi_madt_nmi_source *)header; 452 453 if (BAD_MADT_ENTRY(nmi_src, end)) 454 return -EINVAL; 455 456 acpi_table_print_madt_entry(header); 457 458 /* TBD: Support nimsrc entries? */ 459 460 return 0; 461 } 462 463 #endif /* CONFIG_X86_IO_APIC */ 464 465 /* 466 * acpi_pic_sci_set_trigger() 467 * 468 * use ELCR to set PIC-mode trigger type for SCI 469 * 470 * If a PIC-mode SCI is not recognized or gives spurious IRQ7's 471 * it may require Edge Trigger -- use "acpi_sci=edge" 472 * 473 * Port 0x4d0-4d1 are ECLR1 and ECLR2, the Edge/Level Control Registers 474 * for the 8259 PIC. bit[n] = 1 means irq[n] is Level, otherwise Edge. 475 * ECLR1 is IRQs 0-7 (IRQ 0, 1, 2 must be 0) 476 * ECLR2 is IRQs 8-15 (IRQ 8, 13 must be 0) 477 */ 478 479 void __init acpi_pic_sci_set_trigger(unsigned int irq, u16 trigger) 480 { 481 unsigned int mask = 1 << irq; 482 unsigned int old, new; 483 484 /* Real old ELCR mask */ 485 old = inb(0x4d0) | (inb(0x4d1) << 8); 486 487 /* 488 * If we use ACPI to set PCI IRQs, then we should clear ELCR 489 * since we will set it correctly as we enable the PCI irq 490 * routing. 491 */ 492 new = acpi_noirq ? old : 0; 493 494 /* 495 * Update SCI information in the ELCR, it isn't in the PCI 496 * routing tables.. 497 */ 498 switch (trigger) { 499 case 1: /* Edge - clear */ 500 new &= ~mask; 501 break; 502 case 3: /* Level - set */ 503 new |= mask; 504 break; 505 } 506 507 if (old == new) 508 return; 509 510 printk(PREFIX "setting ELCR to %04x (from %04x)\n", new, old); 511 outb(new, 0x4d0); 512 outb(new >> 8, 0x4d1); 513 } 514 515 int acpi_gsi_to_irq(u32 gsi, unsigned int *irq) 516 { 517 *irq = gsi_to_irq(gsi); 518 519 #ifdef CONFIG_X86_IO_APIC 520 if (acpi_irq_model == ACPI_IRQ_MODEL_IOAPIC) 521 setup_IO_APIC_irq_extra(gsi); 522 #endif 523 524 return 0; 525 } 526 EXPORT_SYMBOL_GPL(acpi_gsi_to_irq); 527 528 int acpi_isa_irq_to_gsi(unsigned isa_irq, u32 *gsi) 529 { 530 if (isa_irq >= 16) 531 return -1; 532 *gsi = irq_to_gsi(isa_irq); 533 return 0; 534 } 535 536 static int acpi_register_gsi_pic(struct device *dev, u32 gsi, 537 int trigger, int polarity) 538 { 539 #ifdef CONFIG_PCI 540 /* 541 * Make sure all (legacy) PCI IRQs are set as level-triggered. 542 */ 543 if (trigger == ACPI_LEVEL_SENSITIVE) 544 eisa_set_level_irq(gsi); 545 #endif 546 547 return gsi; 548 } 549 550 static int acpi_register_gsi_ioapic(struct device *dev, u32 gsi, 551 int trigger, int polarity) 552 { 553 #ifdef CONFIG_X86_IO_APIC 554 gsi = mp_register_gsi(dev, gsi, trigger, polarity); 555 #endif 556 557 return gsi; 558 } 559 560 int (*__acpi_register_gsi)(struct device *dev, u32 gsi, 561 int trigger, int polarity) = acpi_register_gsi_pic; 562 563 #ifdef CONFIG_ACPI_SLEEP 564 int (*acpi_suspend_lowlevel)(void) = x86_acpi_suspend_lowlevel; 565 #else 566 int (*acpi_suspend_lowlevel)(void); 567 #endif 568 569 /* 570 * success: return IRQ number (>=0) 571 * failure: return < 0 572 */ 573 int acpi_register_gsi(struct device *dev, u32 gsi, int trigger, int polarity) 574 { 575 unsigned int irq; 576 unsigned int plat_gsi = gsi; 577 578 plat_gsi = (*__acpi_register_gsi)(dev, gsi, trigger, polarity); 579 irq = gsi_to_irq(plat_gsi); 580 581 return irq; 582 } 583 EXPORT_SYMBOL_GPL(acpi_register_gsi); 584 585 void acpi_unregister_gsi(u32 gsi) 586 { 587 } 588 EXPORT_SYMBOL_GPL(acpi_unregister_gsi); 589 590 void __init acpi_set_irq_model_pic(void) 591 { 592 acpi_irq_model = ACPI_IRQ_MODEL_PIC; 593 __acpi_register_gsi = acpi_register_gsi_pic; 594 acpi_ioapic = 0; 595 } 596 597 void __init acpi_set_irq_model_ioapic(void) 598 { 599 acpi_irq_model = ACPI_IRQ_MODEL_IOAPIC; 600 __acpi_register_gsi = acpi_register_gsi_ioapic; 601 acpi_ioapic = 1; 602 } 603 604 /* 605 * ACPI based hotplug support for CPU 606 */ 607 #ifdef CONFIG_ACPI_HOTPLUG_CPU 608 #include <acpi/processor.h> 609 610 static void acpi_map_cpu2node(acpi_handle handle, int cpu, int physid) 611 { 612 #ifdef CONFIG_ACPI_NUMA 613 int nid; 614 615 nid = acpi_get_node(handle); 616 if (nid == -1 || !node_online(nid)) 617 return; 618 set_apicid_to_node(physid, nid); 619 numa_set_node(cpu, nid); 620 #endif 621 } 622 623 static int _acpi_map_lsapic(acpi_handle handle, int physid, int *pcpu) 624 { 625 int cpu; 626 627 cpu = acpi_register_lapic(physid, ACPI_MADT_ENABLED); 628 if (cpu < 0) { 629 pr_info(PREFIX "Unable to map lapic to logical cpu number\n"); 630 return cpu; 631 } 632 633 acpi_processor_set_pdc(handle); 634 acpi_map_cpu2node(handle, cpu, physid); 635 636 *pcpu = cpu; 637 return 0; 638 } 639 640 /* wrapper to silence section mismatch warning */ 641 int __ref acpi_map_lsapic(acpi_handle handle, int physid, int *pcpu) 642 { 643 return _acpi_map_lsapic(handle, physid, pcpu); 644 } 645 EXPORT_SYMBOL(acpi_map_lsapic); 646 647 int acpi_unmap_lsapic(int cpu) 648 { 649 #ifdef CONFIG_ACPI_NUMA 650 set_apicid_to_node(per_cpu(x86_cpu_to_apicid, cpu), NUMA_NO_NODE); 651 #endif 652 653 per_cpu(x86_cpu_to_apicid, cpu) = -1; 654 set_cpu_present(cpu, false); 655 num_processors--; 656 657 return (0); 658 } 659 660 EXPORT_SYMBOL(acpi_unmap_lsapic); 661 #endif /* CONFIG_ACPI_HOTPLUG_CPU */ 662 663 int acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base) 664 { 665 /* TBD */ 666 return -EINVAL; 667 } 668 669 EXPORT_SYMBOL(acpi_register_ioapic); 670 671 int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base) 672 { 673 /* TBD */ 674 return -EINVAL; 675 } 676 677 EXPORT_SYMBOL(acpi_unregister_ioapic); 678 679 static int __init acpi_parse_sbf(struct acpi_table_header *table) 680 { 681 struct acpi_table_boot *sb; 682 683 sb = (struct acpi_table_boot *)table; 684 if (!sb) { 685 printk(KERN_WARNING PREFIX "Unable to map SBF\n"); 686 return -ENODEV; 687 } 688 689 sbf_port = sb->cmos_index; /* Save CMOS port */ 690 691 return 0; 692 } 693 694 #ifdef CONFIG_HPET_TIMER 695 #include <asm/hpet.h> 696 697 static struct resource *hpet_res __initdata; 698 699 static int __init acpi_parse_hpet(struct acpi_table_header *table) 700 { 701 struct acpi_table_hpet *hpet_tbl; 702 703 hpet_tbl = (struct acpi_table_hpet *)table; 704 if (!hpet_tbl) { 705 printk(KERN_WARNING PREFIX "Unable to map HPET\n"); 706 return -ENODEV; 707 } 708 709 if (hpet_tbl->address.space_id != ACPI_SPACE_MEM) { 710 printk(KERN_WARNING PREFIX "HPET timers must be located in " 711 "memory.\n"); 712 return -1; 713 } 714 715 hpet_address = hpet_tbl->address.address; 716 hpet_blockid = hpet_tbl->sequence; 717 718 /* 719 * Some broken BIOSes advertise HPET at 0x0. We really do not 720 * want to allocate a resource there. 721 */ 722 if (!hpet_address) { 723 printk(KERN_WARNING PREFIX 724 "HPET id: %#x base: %#lx is invalid\n", 725 hpet_tbl->id, hpet_address); 726 return 0; 727 } 728 #ifdef CONFIG_X86_64 729 /* 730 * Some even more broken BIOSes advertise HPET at 731 * 0xfed0000000000000 instead of 0xfed00000. Fix it up and add 732 * some noise: 733 */ 734 if (hpet_address == 0xfed0000000000000UL) { 735 if (!hpet_force_user) { 736 printk(KERN_WARNING PREFIX "HPET id: %#x " 737 "base: 0xfed0000000000000 is bogus\n " 738 "try hpet=force on the kernel command line to " 739 "fix it up to 0xfed00000.\n", hpet_tbl->id); 740 hpet_address = 0; 741 return 0; 742 } 743 printk(KERN_WARNING PREFIX 744 "HPET id: %#x base: 0xfed0000000000000 fixed up " 745 "to 0xfed00000.\n", hpet_tbl->id); 746 hpet_address >>= 32; 747 } 748 #endif 749 printk(KERN_INFO PREFIX "HPET id: %#x base: %#lx\n", 750 hpet_tbl->id, hpet_address); 751 752 /* 753 * Allocate and initialize the HPET firmware resource for adding into 754 * the resource tree during the lateinit timeframe. 755 */ 756 #define HPET_RESOURCE_NAME_SIZE 9 757 hpet_res = alloc_bootmem(sizeof(*hpet_res) + HPET_RESOURCE_NAME_SIZE); 758 759 hpet_res->name = (void *)&hpet_res[1]; 760 hpet_res->flags = IORESOURCE_MEM; 761 snprintf((char *)hpet_res->name, HPET_RESOURCE_NAME_SIZE, "HPET %u", 762 hpet_tbl->sequence); 763 764 hpet_res->start = hpet_address; 765 hpet_res->end = hpet_address + (1 * 1024) - 1; 766 767 return 0; 768 } 769 770 /* 771 * hpet_insert_resource inserts the HPET resources used into the resource 772 * tree. 773 */ 774 static __init int hpet_insert_resource(void) 775 { 776 if (!hpet_res) 777 return 1; 778 779 return insert_resource(&iomem_resource, hpet_res); 780 } 781 782 late_initcall(hpet_insert_resource); 783 784 #else 785 #define acpi_parse_hpet NULL 786 #endif 787 788 static int __init acpi_parse_fadt(struct acpi_table_header *table) 789 { 790 791 #ifdef CONFIG_X86_PM_TIMER 792 /* detect the location of the ACPI PM Timer */ 793 if (acpi_gbl_FADT.header.revision >= FADT2_REVISION_ID) { 794 /* FADT rev. 2 */ 795 if (acpi_gbl_FADT.xpm_timer_block.space_id != 796 ACPI_ADR_SPACE_SYSTEM_IO) 797 return 0; 798 799 pmtmr_ioport = acpi_gbl_FADT.xpm_timer_block.address; 800 /* 801 * "X" fields are optional extensions to the original V1.0 802 * fields, so we must selectively expand V1.0 fields if the 803 * corresponding X field is zero. 804 */ 805 if (!pmtmr_ioport) 806 pmtmr_ioport = acpi_gbl_FADT.pm_timer_block; 807 } else { 808 /* FADT rev. 1 */ 809 pmtmr_ioport = acpi_gbl_FADT.pm_timer_block; 810 } 811 if (pmtmr_ioport) 812 printk(KERN_INFO PREFIX "PM-Timer IO Port: %#x\n", 813 pmtmr_ioport); 814 #endif 815 return 0; 816 } 817 818 #ifdef CONFIG_X86_LOCAL_APIC 819 /* 820 * Parse LAPIC entries in MADT 821 * returns 0 on success, < 0 on error 822 */ 823 824 static int __init early_acpi_parse_madt_lapic_addr_ovr(void) 825 { 826 int count; 827 828 if (!cpu_has_apic) 829 return -ENODEV; 830 831 /* 832 * Note that the LAPIC address is obtained from the MADT (32-bit value) 833 * and (optionally) overriden by a LAPIC_ADDR_OVR entry (64-bit value). 834 */ 835 836 count = 837 acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE, 838 acpi_parse_lapic_addr_ovr, 0); 839 if (count < 0) { 840 printk(KERN_ERR PREFIX 841 "Error parsing LAPIC address override entry\n"); 842 return count; 843 } 844 845 register_lapic_address(acpi_lapic_addr); 846 847 return count; 848 } 849 850 static int __init acpi_parse_madt_lapic_entries(void) 851 { 852 int count; 853 int x2count = 0; 854 855 if (!cpu_has_apic) 856 return -ENODEV; 857 858 /* 859 * Note that the LAPIC address is obtained from the MADT (32-bit value) 860 * and (optionally) overriden by a LAPIC_ADDR_OVR entry (64-bit value). 861 */ 862 863 count = 864 acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE, 865 acpi_parse_lapic_addr_ovr, 0); 866 if (count < 0) { 867 printk(KERN_ERR PREFIX 868 "Error parsing LAPIC address override entry\n"); 869 return count; 870 } 871 872 register_lapic_address(acpi_lapic_addr); 873 874 count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_SAPIC, 875 acpi_parse_sapic, MAX_LOCAL_APIC); 876 877 if (!count) { 878 x2count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_X2APIC, 879 acpi_parse_x2apic, MAX_LOCAL_APIC); 880 count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC, 881 acpi_parse_lapic, MAX_LOCAL_APIC); 882 } 883 if (!count && !x2count) { 884 printk(KERN_ERR PREFIX "No LAPIC entries present\n"); 885 /* TBD: Cleanup to allow fallback to MPS */ 886 return -ENODEV; 887 } else if (count < 0 || x2count < 0) { 888 printk(KERN_ERR PREFIX "Error parsing LAPIC entry\n"); 889 /* TBD: Cleanup to allow fallback to MPS */ 890 return count; 891 } 892 893 x2count = 894 acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_X2APIC_NMI, 895 acpi_parse_x2apic_nmi, 0); 896 count = 897 acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_NMI, acpi_parse_lapic_nmi, 0); 898 if (count < 0 || x2count < 0) { 899 printk(KERN_ERR PREFIX "Error parsing LAPIC NMI entry\n"); 900 /* TBD: Cleanup to allow fallback to MPS */ 901 return count; 902 } 903 return 0; 904 } 905 #endif /* CONFIG_X86_LOCAL_APIC */ 906 907 #ifdef CONFIG_X86_IO_APIC 908 #define MP_ISA_BUS 0 909 910 #ifdef CONFIG_X86_ES7000 911 extern int es7000_plat; 912 #endif 913 914 void __init mp_override_legacy_irq(u8 bus_irq, u8 polarity, u8 trigger, u32 gsi) 915 { 916 int ioapic; 917 int pin; 918 struct mpc_intsrc mp_irq; 919 920 /* 921 * Convert 'gsi' to 'ioapic.pin'. 922 */ 923 ioapic = mp_find_ioapic(gsi); 924 if (ioapic < 0) 925 return; 926 pin = mp_find_ioapic_pin(ioapic, gsi); 927 928 /* 929 * TBD: This check is for faulty timer entries, where the override 930 * erroneously sets the trigger to level, resulting in a HUGE 931 * increase of timer interrupts! 932 */ 933 if ((bus_irq == 0) && (trigger == 3)) 934 trigger = 1; 935 936 mp_irq.type = MP_INTSRC; 937 mp_irq.irqtype = mp_INT; 938 mp_irq.irqflag = (trigger << 2) | polarity; 939 mp_irq.srcbus = MP_ISA_BUS; 940 mp_irq.srcbusirq = bus_irq; /* IRQ */ 941 mp_irq.dstapic = mpc_ioapic_id(ioapic); /* APIC ID */ 942 mp_irq.dstirq = pin; /* INTIN# */ 943 944 mp_save_irq(&mp_irq); 945 946 isa_irq_to_gsi[bus_irq] = gsi; 947 } 948 949 void __init mp_config_acpi_legacy_irqs(void) 950 { 951 int i; 952 struct mpc_intsrc mp_irq; 953 954 #ifdef CONFIG_EISA 955 /* 956 * Fabricate the legacy ISA bus (bus #31). 957 */ 958 mp_bus_id_to_type[MP_ISA_BUS] = MP_BUS_ISA; 959 #endif 960 set_bit(MP_ISA_BUS, mp_bus_not_pci); 961 pr_debug("Bus #%d is ISA\n", MP_ISA_BUS); 962 963 #ifdef CONFIG_X86_ES7000 964 /* 965 * Older generations of ES7000 have no legacy identity mappings 966 */ 967 if (es7000_plat == 1) 968 return; 969 #endif 970 971 /* 972 * Use the default configuration for the IRQs 0-15. Unless 973 * overridden by (MADT) interrupt source override entries. 974 */ 975 for (i = 0; i < 16; i++) { 976 int ioapic, pin; 977 unsigned int dstapic; 978 int idx; 979 u32 gsi; 980 981 /* Locate the gsi that irq i maps to. */ 982 if (acpi_isa_irq_to_gsi(i, &gsi)) 983 continue; 984 985 /* 986 * Locate the IOAPIC that manages the ISA IRQ. 987 */ 988 ioapic = mp_find_ioapic(gsi); 989 if (ioapic < 0) 990 continue; 991 pin = mp_find_ioapic_pin(ioapic, gsi); 992 dstapic = mpc_ioapic_id(ioapic); 993 994 for (idx = 0; idx < mp_irq_entries; idx++) { 995 struct mpc_intsrc *irq = mp_irqs + idx; 996 997 /* Do we already have a mapping for this ISA IRQ? */ 998 if (irq->srcbus == MP_ISA_BUS && irq->srcbusirq == i) 999 break; 1000 1001 /* Do we already have a mapping for this IOAPIC pin */ 1002 if (irq->dstapic == dstapic && irq->dstirq == pin) 1003 break; 1004 } 1005 1006 if (idx != mp_irq_entries) { 1007 printk(KERN_DEBUG "ACPI: IRQ%d used by override.\n", i); 1008 continue; /* IRQ already used */ 1009 } 1010 1011 mp_irq.type = MP_INTSRC; 1012 mp_irq.irqflag = 0; /* Conforming */ 1013 mp_irq.srcbus = MP_ISA_BUS; 1014 mp_irq.dstapic = dstapic; 1015 mp_irq.irqtype = mp_INT; 1016 mp_irq.srcbusirq = i; /* Identity mapped */ 1017 mp_irq.dstirq = pin; 1018 1019 mp_save_irq(&mp_irq); 1020 } 1021 } 1022 1023 static int mp_config_acpi_gsi(struct device *dev, u32 gsi, int trigger, 1024 int polarity) 1025 { 1026 #ifdef CONFIG_X86_MPPARSE 1027 struct mpc_intsrc mp_irq; 1028 struct pci_dev *pdev; 1029 unsigned char number; 1030 unsigned int devfn; 1031 int ioapic; 1032 u8 pin; 1033 1034 if (!acpi_ioapic) 1035 return 0; 1036 if (!dev || !dev_is_pci(dev)) 1037 return 0; 1038 1039 pdev = to_pci_dev(dev); 1040 number = pdev->bus->number; 1041 devfn = pdev->devfn; 1042 pin = pdev->pin; 1043 /* print the entry should happen on mptable identically */ 1044 mp_irq.type = MP_INTSRC; 1045 mp_irq.irqtype = mp_INT; 1046 mp_irq.irqflag = (trigger == ACPI_EDGE_SENSITIVE ? 4 : 0x0c) | 1047 (polarity == ACPI_ACTIVE_HIGH ? 1 : 3); 1048 mp_irq.srcbus = number; 1049 mp_irq.srcbusirq = (((devfn >> 3) & 0x1f) << 2) | ((pin - 1) & 3); 1050 ioapic = mp_find_ioapic(gsi); 1051 mp_irq.dstapic = mpc_ioapic_id(ioapic); 1052 mp_irq.dstirq = mp_find_ioapic_pin(ioapic, gsi); 1053 1054 mp_save_irq(&mp_irq); 1055 #endif 1056 return 0; 1057 } 1058 1059 int mp_register_gsi(struct device *dev, u32 gsi, int trigger, int polarity) 1060 { 1061 int ioapic; 1062 int ioapic_pin; 1063 struct io_apic_irq_attr irq_attr; 1064 int ret; 1065 1066 if (acpi_irq_model != ACPI_IRQ_MODEL_IOAPIC) 1067 return gsi; 1068 1069 /* Don't set up the ACPI SCI because it's already set up */ 1070 if (acpi_gbl_FADT.sci_interrupt == gsi) 1071 return gsi; 1072 1073 ioapic = mp_find_ioapic(gsi); 1074 if (ioapic < 0) { 1075 printk(KERN_WARNING "No IOAPIC for GSI %u\n", gsi); 1076 return gsi; 1077 } 1078 1079 ioapic_pin = mp_find_ioapic_pin(ioapic, gsi); 1080 1081 if (ioapic_pin > MP_MAX_IOAPIC_PIN) { 1082 printk(KERN_ERR "Invalid reference to IOAPIC pin " 1083 "%d-%d\n", mpc_ioapic_id(ioapic), 1084 ioapic_pin); 1085 return gsi; 1086 } 1087 1088 if (enable_update_mptable) 1089 mp_config_acpi_gsi(dev, gsi, trigger, polarity); 1090 1091 set_io_apic_irq_attr(&irq_attr, ioapic, ioapic_pin, 1092 trigger == ACPI_EDGE_SENSITIVE ? 0 : 1, 1093 polarity == ACPI_ACTIVE_HIGH ? 0 : 1); 1094 ret = io_apic_set_pci_routing(dev, gsi_to_irq(gsi), &irq_attr); 1095 if (ret < 0) 1096 gsi = INT_MIN; 1097 1098 return gsi; 1099 } 1100 1101 /* 1102 * Parse IOAPIC related entries in MADT 1103 * returns 0 on success, < 0 on error 1104 */ 1105 static int __init acpi_parse_madt_ioapic_entries(void) 1106 { 1107 int count; 1108 1109 /* 1110 * ACPI interpreter is required to complete interrupt setup, 1111 * so if it is off, don't enumerate the io-apics with ACPI. 1112 * If MPS is present, it will handle them, 1113 * otherwise the system will stay in PIC mode 1114 */ 1115 if (acpi_disabled || acpi_noirq) 1116 return -ENODEV; 1117 1118 if (!cpu_has_apic) 1119 return -ENODEV; 1120 1121 /* 1122 * if "noapic" boot option, don't look for IO-APICs 1123 */ 1124 if (skip_ioapic_setup) { 1125 printk(KERN_INFO PREFIX "Skipping IOAPIC probe " 1126 "due to 'noapic' option.\n"); 1127 return -ENODEV; 1128 } 1129 1130 count = 1131 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 = 1142 acpi_table_parse_madt(ACPI_MADT_TYPE_INTERRUPT_OVERRIDE, acpi_parse_int_src_ovr, 1143 nr_irqs); 1144 if (count < 0) { 1145 printk(KERN_ERR PREFIX 1146 "Error parsing interrupt source overrides entry\n"); 1147 /* TBD: Cleanup to allow fallback to MPS */ 1148 return count; 1149 } 1150 1151 /* 1152 * If BIOS did not supply an INT_SRC_OVR for the SCI 1153 * pretend we got one so we can set the SCI flags. 1154 */ 1155 if (!acpi_sci_override_gsi) 1156 acpi_sci_ioapic_setup(acpi_gbl_FADT.sci_interrupt, 0, 0, 1157 acpi_gbl_FADT.sci_interrupt); 1158 1159 /* Fill in identity legacy mappings where no override */ 1160 mp_config_acpi_legacy_irqs(); 1161 1162 count = 1163 acpi_table_parse_madt(ACPI_MADT_TYPE_NMI_SOURCE, acpi_parse_nmi_src, 1164 nr_irqs); 1165 if (count < 0) { 1166 printk(KERN_ERR PREFIX "Error parsing NMI SRC entry\n"); 1167 /* TBD: Cleanup to allow fallback to MPS */ 1168 return count; 1169 } 1170 1171 return 0; 1172 } 1173 #else 1174 static inline int acpi_parse_madt_ioapic_entries(void) 1175 { 1176 return -1; 1177 } 1178 #endif /* !CONFIG_X86_IO_APIC */ 1179 1180 static void __init early_acpi_process_madt(void) 1181 { 1182 #ifdef CONFIG_X86_LOCAL_APIC 1183 int error; 1184 1185 if (!acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) { 1186 1187 /* 1188 * Parse MADT LAPIC entries 1189 */ 1190 error = early_acpi_parse_madt_lapic_addr_ovr(); 1191 if (!error) { 1192 acpi_lapic = 1; 1193 smp_found_config = 1; 1194 } 1195 if (error == -EINVAL) { 1196 /* 1197 * Dell Precision Workstation 410, 610 come here. 1198 */ 1199 printk(KERN_ERR PREFIX 1200 "Invalid BIOS MADT, disabling ACPI\n"); 1201 disable_acpi(); 1202 } 1203 } 1204 #endif 1205 } 1206 1207 static void __init acpi_process_madt(void) 1208 { 1209 #ifdef CONFIG_X86_LOCAL_APIC 1210 int error; 1211 1212 if (!acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) { 1213 1214 /* 1215 * Parse MADT LAPIC entries 1216 */ 1217 error = acpi_parse_madt_lapic_entries(); 1218 if (!error) { 1219 acpi_lapic = 1; 1220 1221 /* 1222 * Parse MADT IO-APIC entries 1223 */ 1224 error = acpi_parse_madt_ioapic_entries(); 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 * If your system is blacklisted here, but you find that acpi=force 1313 * works for you, please contact linux-acpi@vger.kernel.org 1314 */ 1315 static struct dmi_system_id __initdata acpi_dmi_table[] = { 1316 /* 1317 * Boxes that need ACPI disabled 1318 */ 1319 { 1320 .callback = dmi_disable_acpi, 1321 .ident = "IBM Thinkpad", 1322 .matches = { 1323 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), 1324 DMI_MATCH(DMI_BOARD_NAME, "2629H1G"), 1325 }, 1326 }, 1327 1328 /* 1329 * Boxes that need ACPI PCI IRQ routing disabled 1330 */ 1331 { 1332 .callback = disable_acpi_irq, 1333 .ident = "ASUS A7V", 1334 .matches = { 1335 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC"), 1336 DMI_MATCH(DMI_BOARD_NAME, "<A7V>"), 1337 /* newer BIOS, Revision 1011, does work */ 1338 DMI_MATCH(DMI_BIOS_VERSION, 1339 "ASUS A7V ACPI BIOS Revision 1007"), 1340 }, 1341 }, 1342 { 1343 /* 1344 * Latest BIOS for IBM 600E (1.16) has bad pcinum 1345 * for LPC bridge, which is needed for the PCI 1346 * interrupt links to work. DSDT fix is in bug 5966. 1347 * 2645, 2646 model numbers are shared with 600/600E/600X 1348 */ 1349 .callback = disable_acpi_irq, 1350 .ident = "IBM Thinkpad 600 Series 2645", 1351 .matches = { 1352 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), 1353 DMI_MATCH(DMI_BOARD_NAME, "2645"), 1354 }, 1355 }, 1356 { 1357 .callback = disable_acpi_irq, 1358 .ident = "IBM Thinkpad 600 Series 2646", 1359 .matches = { 1360 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), 1361 DMI_MATCH(DMI_BOARD_NAME, "2646"), 1362 }, 1363 }, 1364 /* 1365 * Boxes that need ACPI PCI IRQ routing and PCI scan disabled 1366 */ 1367 { /* _BBN 0 bug */ 1368 .callback = disable_acpi_pci, 1369 .ident = "ASUS PR-DLS", 1370 .matches = { 1371 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."), 1372 DMI_MATCH(DMI_BOARD_NAME, "PR-DLS"), 1373 DMI_MATCH(DMI_BIOS_VERSION, 1374 "ASUS PR-DLS ACPI BIOS Revision 1010"), 1375 DMI_MATCH(DMI_BIOS_DATE, "03/21/2003") 1376 }, 1377 }, 1378 { 1379 .callback = disable_acpi_pci, 1380 .ident = "Acer TravelMate 36x Laptop", 1381 .matches = { 1382 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 1383 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 360"), 1384 }, 1385 }, 1386 {} 1387 }; 1388 1389 /* second table for DMI checks that should run after early-quirks */ 1390 static struct dmi_system_id __initdata acpi_dmi_table_late[] = { 1391 /* 1392 * HP laptops which use a DSDT reporting as HP/SB400/10000, 1393 * which includes some code which overrides all temperature 1394 * trip points to 16C if the INTIN2 input of the I/O APIC 1395 * is enabled. This input is incorrectly designated the 1396 * ISA IRQ 0 via an interrupt source override even though 1397 * it is wired to the output of the master 8259A and INTIN0 1398 * is not connected at all. Force ignoring BIOS IRQ0 1399 * override in that cases. 1400 */ 1401 { 1402 .callback = dmi_ignore_irq0_timer_override, 1403 .ident = "HP nx6115 laptop", 1404 .matches = { 1405 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), 1406 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6115"), 1407 }, 1408 }, 1409 { 1410 .callback = dmi_ignore_irq0_timer_override, 1411 .ident = "HP NX6125 laptop", 1412 .matches = { 1413 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), 1414 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6125"), 1415 }, 1416 }, 1417 { 1418 .callback = dmi_ignore_irq0_timer_override, 1419 .ident = "HP NX6325 laptop", 1420 .matches = { 1421 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), 1422 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6325"), 1423 }, 1424 }, 1425 { 1426 .callback = dmi_ignore_irq0_timer_override, 1427 .ident = "HP 6715b laptop", 1428 .matches = { 1429 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), 1430 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq 6715b"), 1431 }, 1432 }, 1433 { 1434 .callback = dmi_ignore_irq0_timer_override, 1435 .ident = "FUJITSU SIEMENS", 1436 .matches = { 1437 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"), 1438 DMI_MATCH(DMI_PRODUCT_NAME, "AMILO PRO V2030"), 1439 }, 1440 }, 1441 {} 1442 }; 1443 1444 /* 1445 * acpi_boot_table_init() and acpi_boot_init() 1446 * called from setup_arch(), always. 1447 * 1. checksums all tables 1448 * 2. enumerates lapics 1449 * 3. enumerates io-apics 1450 * 1451 * acpi_table_init() is separate to allow reading SRAT without 1452 * other side effects. 1453 * 1454 * side effects of acpi_boot_init: 1455 * acpi_lapic = 1 if LAPIC found 1456 * acpi_ioapic = 1 if IOAPIC found 1457 * if (acpi_lapic && acpi_ioapic) smp_found_config = 1; 1458 * if acpi_blacklisted() acpi_disabled = 1; 1459 * acpi_irq_model=... 1460 * ... 1461 */ 1462 1463 void __init acpi_boot_table_init(void) 1464 { 1465 dmi_check_system(acpi_dmi_table); 1466 1467 /* 1468 * If acpi_disabled, bail out 1469 */ 1470 if (acpi_disabled) 1471 return; 1472 1473 /* 1474 * Initialize the ACPI boot-time table parser. 1475 */ 1476 if (acpi_table_init()) { 1477 disable_acpi(); 1478 return; 1479 } 1480 1481 acpi_table_parse(ACPI_SIG_BOOT, acpi_parse_sbf); 1482 1483 /* 1484 * blacklist may disable ACPI entirely 1485 */ 1486 if (acpi_blacklisted()) { 1487 if (acpi_force) { 1488 printk(KERN_WARNING PREFIX "acpi=force override\n"); 1489 } else { 1490 printk(KERN_WARNING PREFIX "Disabling ACPI support\n"); 1491 disable_acpi(); 1492 return; 1493 } 1494 } 1495 } 1496 1497 int __init early_acpi_boot_init(void) 1498 { 1499 /* 1500 * If acpi_disabled, bail out 1501 */ 1502 if (acpi_disabled) 1503 return 1; 1504 1505 /* 1506 * Process the Multiple APIC Description Table (MADT), if present 1507 */ 1508 early_acpi_process_madt(); 1509 1510 return 0; 1511 } 1512 1513 int __init acpi_boot_init(void) 1514 { 1515 /* those are executed after early-quirks are executed */ 1516 dmi_check_system(acpi_dmi_table_late); 1517 1518 /* 1519 * If acpi_disabled, bail out 1520 */ 1521 if (acpi_disabled) 1522 return 1; 1523 1524 acpi_table_parse(ACPI_SIG_BOOT, acpi_parse_sbf); 1525 1526 /* 1527 * set sci_int and PM timer address 1528 */ 1529 acpi_table_parse(ACPI_SIG_FADT, acpi_parse_fadt); 1530 1531 /* 1532 * Process the Multiple APIC Description Table (MADT), if present 1533 */ 1534 acpi_process_madt(); 1535 1536 acpi_table_parse(ACPI_SIG_HPET, acpi_parse_hpet); 1537 1538 if (!acpi_noirq) 1539 x86_init.pci.init = pci_acpi_init; 1540 1541 return 0; 1542 } 1543 1544 static int __init parse_acpi(char *arg) 1545 { 1546 if (!arg) 1547 return -EINVAL; 1548 1549 /* "acpi=off" disables both ACPI table parsing and interpreter */ 1550 if (strcmp(arg, "off") == 0) { 1551 disable_acpi(); 1552 } 1553 /* acpi=force to over-ride black-list */ 1554 else if (strcmp(arg, "force") == 0) { 1555 acpi_force = 1; 1556 acpi_disabled = 0; 1557 } 1558 /* acpi=strict disables out-of-spec workarounds */ 1559 else if (strcmp(arg, "strict") == 0) { 1560 acpi_strict = 1; 1561 } 1562 /* acpi=rsdt use RSDT instead of XSDT */ 1563 else if (strcmp(arg, "rsdt") == 0) { 1564 acpi_gbl_do_not_use_xsdt = TRUE; 1565 } 1566 /* "acpi=noirq" disables ACPI interrupt routing */ 1567 else if (strcmp(arg, "noirq") == 0) { 1568 acpi_noirq_set(); 1569 } 1570 /* "acpi=copy_dsdt" copys DSDT */ 1571 else if (strcmp(arg, "copy_dsdt") == 0) { 1572 acpi_gbl_copy_dsdt_locally = 1; 1573 } 1574 /* "acpi=nocmcff" disables FF mode for corrected errors */ 1575 else if (strcmp(arg, "nocmcff") == 0) { 1576 acpi_disable_cmcff = 1; 1577 } else { 1578 /* Core will printk when we return error. */ 1579 return -EINVAL; 1580 } 1581 return 0; 1582 } 1583 early_param("acpi", parse_acpi); 1584 1585 /* FIXME: Using pci= for an ACPI parameter is a travesty. */ 1586 static int __init parse_pci(char *arg) 1587 { 1588 if (arg && strcmp(arg, "noacpi") == 0) 1589 acpi_disable_pci(); 1590 return 0; 1591 } 1592 early_param("pci", parse_pci); 1593 1594 int __init acpi_mps_check(void) 1595 { 1596 #if defined(CONFIG_X86_LOCAL_APIC) && !defined(CONFIG_X86_MPPARSE) 1597 /* mptable code is not built-in*/ 1598 if (acpi_disabled || acpi_noirq) { 1599 printk(KERN_WARNING "MPS support code is not built-in.\n" 1600 "Using acpi=off or acpi=noirq or pci=noacpi " 1601 "may have problem\n"); 1602 return 1; 1603 } 1604 #endif 1605 return 0; 1606 } 1607 1608 #ifdef CONFIG_X86_IO_APIC 1609 static int __init parse_acpi_skip_timer_override(char *arg) 1610 { 1611 acpi_skip_timer_override = 1; 1612 return 0; 1613 } 1614 early_param("acpi_skip_timer_override", parse_acpi_skip_timer_override); 1615 1616 static int __init parse_acpi_use_timer_override(char *arg) 1617 { 1618 acpi_use_timer_override = 1; 1619 return 0; 1620 } 1621 early_param("acpi_use_timer_override", parse_acpi_use_timer_override); 1622 #endif /* CONFIG_X86_IO_APIC */ 1623 1624 static int __init setup_acpi_sci(char *s) 1625 { 1626 if (!s) 1627 return -EINVAL; 1628 if (!strcmp(s, "edge")) 1629 acpi_sci_flags = ACPI_MADT_TRIGGER_EDGE | 1630 (acpi_sci_flags & ~ACPI_MADT_TRIGGER_MASK); 1631 else if (!strcmp(s, "level")) 1632 acpi_sci_flags = ACPI_MADT_TRIGGER_LEVEL | 1633 (acpi_sci_flags & ~ACPI_MADT_TRIGGER_MASK); 1634 else if (!strcmp(s, "high")) 1635 acpi_sci_flags = ACPI_MADT_POLARITY_ACTIVE_HIGH | 1636 (acpi_sci_flags & ~ACPI_MADT_POLARITY_MASK); 1637 else if (!strcmp(s, "low")) 1638 acpi_sci_flags = ACPI_MADT_POLARITY_ACTIVE_LOW | 1639 (acpi_sci_flags & ~ACPI_MADT_POLARITY_MASK); 1640 else 1641 return -EINVAL; 1642 return 0; 1643 } 1644 early_param("acpi_sci", setup_acpi_sci); 1645 1646 int __acpi_acquire_global_lock(unsigned int *lock) 1647 { 1648 unsigned int old, new, val; 1649 do { 1650 old = *lock; 1651 new = (((old & ~0x3) + 2) + ((old >> 1) & 0x1)); 1652 val = cmpxchg(lock, old, new); 1653 } while (unlikely (val != old)); 1654 return (new < 3) ? -1 : 0; 1655 } 1656 1657 int __acpi_release_global_lock(unsigned int *lock) 1658 { 1659 unsigned int old, new, val; 1660 do { 1661 old = *lock; 1662 new = old & ~0x3; 1663 val = cmpxchg(lock, old, new); 1664 } while (unlikely (val != old)); 1665 return old & 0x1; 1666 } 1667 1668 void __init arch_reserve_mem_area(acpi_physical_address addr, size_t size) 1669 { 1670 e820_add_region(addr, size, E820_ACPI); 1671 update_e820(); 1672 } 1673