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 acpi_penalize_sci_irq(bus_irq, trigger, polarity); 449 450 /* 451 * stash over-ride to indicate we've been here 452 * and for later update of acpi_gbl_FADT 453 */ 454 acpi_sci_override_gsi = gsi; 455 return; 456 } 457 458 static int __init 459 acpi_parse_int_src_ovr(struct acpi_subtable_header * header, 460 const unsigned long end) 461 { 462 struct acpi_madt_interrupt_override *intsrc = NULL; 463 464 intsrc = (struct acpi_madt_interrupt_override *)header; 465 466 if (BAD_MADT_ENTRY(intsrc, end)) 467 return -EINVAL; 468 469 acpi_table_print_madt_entry(header); 470 471 if (intsrc->source_irq == acpi_gbl_FADT.sci_interrupt) { 472 acpi_sci_ioapic_setup(intsrc->source_irq, 473 intsrc->inti_flags & ACPI_MADT_POLARITY_MASK, 474 (intsrc->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2, 475 intsrc->global_irq); 476 return 0; 477 } 478 479 if (intsrc->source_irq == 0) { 480 if (acpi_skip_timer_override) { 481 printk(PREFIX "BIOS IRQ0 override ignored.\n"); 482 return 0; 483 } 484 485 if ((intsrc->global_irq == 2) && acpi_fix_pin2_polarity 486 && (intsrc->inti_flags & ACPI_MADT_POLARITY_MASK)) { 487 intsrc->inti_flags &= ~ACPI_MADT_POLARITY_MASK; 488 printk(PREFIX "BIOS IRQ0 pin2 override: forcing polarity to high active.\n"); 489 } 490 } 491 492 mp_override_legacy_irq(intsrc->source_irq, 493 intsrc->inti_flags & ACPI_MADT_POLARITY_MASK, 494 (intsrc->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2, 495 intsrc->global_irq); 496 497 return 0; 498 } 499 500 static int __init 501 acpi_parse_nmi_src(struct acpi_subtable_header * header, const unsigned long end) 502 { 503 struct acpi_madt_nmi_source *nmi_src = NULL; 504 505 nmi_src = (struct acpi_madt_nmi_source *)header; 506 507 if (BAD_MADT_ENTRY(nmi_src, end)) 508 return -EINVAL; 509 510 acpi_table_print_madt_entry(header); 511 512 /* TBD: Support nimsrc entries? */ 513 514 return 0; 515 } 516 517 #endif /* CONFIG_X86_IO_APIC */ 518 519 /* 520 * acpi_pic_sci_set_trigger() 521 * 522 * use ELCR to set PIC-mode trigger type for SCI 523 * 524 * If a PIC-mode SCI is not recognized or gives spurious IRQ7's 525 * it may require Edge Trigger -- use "acpi_sci=edge" 526 * 527 * Port 0x4d0-4d1 are ECLR1 and ECLR2, the Edge/Level Control Registers 528 * for the 8259 PIC. bit[n] = 1 means irq[n] is Level, otherwise Edge. 529 * ECLR1 is IRQs 0-7 (IRQ 0, 1, 2 must be 0) 530 * ECLR2 is IRQs 8-15 (IRQ 8, 13 must be 0) 531 */ 532 533 void __init acpi_pic_sci_set_trigger(unsigned int irq, u16 trigger) 534 { 535 unsigned int mask = 1 << irq; 536 unsigned int old, new; 537 538 /* Real old ELCR mask */ 539 old = inb(0x4d0) | (inb(0x4d1) << 8); 540 541 /* 542 * If we use ACPI to set PCI IRQs, then we should clear ELCR 543 * since we will set it correctly as we enable the PCI irq 544 * routing. 545 */ 546 new = acpi_noirq ? old : 0; 547 548 /* 549 * Update SCI information in the ELCR, it isn't in the PCI 550 * routing tables.. 551 */ 552 switch (trigger) { 553 case 1: /* Edge - clear */ 554 new &= ~mask; 555 break; 556 case 3: /* Level - set */ 557 new |= mask; 558 break; 559 } 560 561 if (old == new) 562 return; 563 564 printk(PREFIX "setting ELCR to %04x (from %04x)\n", new, old); 565 outb(new, 0x4d0); 566 outb(new >> 8, 0x4d1); 567 } 568 569 int acpi_gsi_to_irq(u32 gsi, unsigned int *irqp) 570 { 571 int rc, irq, trigger, polarity; 572 573 if (acpi_irq_model == ACPI_IRQ_MODEL_PIC) { 574 *irqp = gsi; 575 return 0; 576 } 577 578 rc = acpi_get_override_irq(gsi, &trigger, &polarity); 579 if (rc == 0) { 580 trigger = trigger ? ACPI_LEVEL_SENSITIVE : ACPI_EDGE_SENSITIVE; 581 polarity = polarity ? ACPI_ACTIVE_LOW : ACPI_ACTIVE_HIGH; 582 irq = acpi_register_gsi(NULL, gsi, trigger, polarity); 583 if (irq >= 0) { 584 *irqp = irq; 585 return 0; 586 } 587 } 588 589 return -1; 590 } 591 EXPORT_SYMBOL_GPL(acpi_gsi_to_irq); 592 593 int acpi_isa_irq_to_gsi(unsigned isa_irq, u32 *gsi) 594 { 595 if (isa_irq < nr_legacy_irqs() && 596 isa_irq_to_gsi[isa_irq] != ACPI_INVALID_GSI) { 597 *gsi = isa_irq_to_gsi[isa_irq]; 598 return 0; 599 } 600 601 return -1; 602 } 603 604 static int acpi_register_gsi_pic(struct device *dev, u32 gsi, 605 int trigger, int polarity) 606 { 607 #ifdef CONFIG_PCI 608 /* 609 * Make sure all (legacy) PCI IRQs are set as level-triggered. 610 */ 611 if (trigger == ACPI_LEVEL_SENSITIVE) 612 elcr_set_level_irq(gsi); 613 #endif 614 615 return gsi; 616 } 617 618 #ifdef CONFIG_X86_LOCAL_APIC 619 static int acpi_register_gsi_ioapic(struct device *dev, u32 gsi, 620 int trigger, int polarity) 621 { 622 int irq = gsi; 623 #ifdef CONFIG_X86_IO_APIC 624 int node; 625 struct irq_alloc_info info; 626 627 node = dev ? dev_to_node(dev) : NUMA_NO_NODE; 628 trigger = trigger == ACPI_EDGE_SENSITIVE ? 0 : 1; 629 polarity = polarity == ACPI_ACTIVE_HIGH ? 0 : 1; 630 ioapic_set_alloc_attr(&info, node, trigger, polarity); 631 632 mutex_lock(&acpi_ioapic_lock); 633 irq = mp_map_gsi_to_irq(gsi, IOAPIC_MAP_ALLOC, &info); 634 /* Don't set up the ACPI SCI because it's already set up */ 635 if (irq >= 0 && enable_update_mptable && 636 acpi_gbl_FADT.sci_interrupt != gsi) 637 mp_config_acpi_gsi(dev, gsi, trigger, polarity); 638 mutex_unlock(&acpi_ioapic_lock); 639 #endif 640 641 return irq; 642 } 643 644 static void acpi_unregister_gsi_ioapic(u32 gsi) 645 { 646 #ifdef CONFIG_X86_IO_APIC 647 int irq; 648 649 mutex_lock(&acpi_ioapic_lock); 650 irq = mp_map_gsi_to_irq(gsi, 0, NULL); 651 if (irq > 0) 652 mp_unmap_irq(irq); 653 mutex_unlock(&acpi_ioapic_lock); 654 #endif 655 } 656 #endif 657 658 int (*__acpi_register_gsi)(struct device *dev, u32 gsi, 659 int trigger, int polarity) = acpi_register_gsi_pic; 660 void (*__acpi_unregister_gsi)(u32 gsi) = NULL; 661 662 #ifdef CONFIG_ACPI_SLEEP 663 int (*acpi_suspend_lowlevel)(void) = x86_acpi_suspend_lowlevel; 664 #else 665 int (*acpi_suspend_lowlevel)(void); 666 #endif 667 668 /* 669 * success: return IRQ number (>=0) 670 * failure: return < 0 671 */ 672 int acpi_register_gsi(struct device *dev, u32 gsi, int trigger, int polarity) 673 { 674 return __acpi_register_gsi(dev, gsi, trigger, polarity); 675 } 676 EXPORT_SYMBOL_GPL(acpi_register_gsi); 677 678 void acpi_unregister_gsi(u32 gsi) 679 { 680 if (__acpi_unregister_gsi) 681 __acpi_unregister_gsi(gsi); 682 } 683 EXPORT_SYMBOL_GPL(acpi_unregister_gsi); 684 685 #ifdef CONFIG_X86_LOCAL_APIC 686 static void __init acpi_set_irq_model_ioapic(void) 687 { 688 acpi_irq_model = ACPI_IRQ_MODEL_IOAPIC; 689 __acpi_register_gsi = acpi_register_gsi_ioapic; 690 __acpi_unregister_gsi = acpi_unregister_gsi_ioapic; 691 acpi_ioapic = 1; 692 } 693 #endif 694 695 /* 696 * ACPI based hotplug support for CPU 697 */ 698 #ifdef CONFIG_ACPI_HOTPLUG_CPU 699 #include <acpi/processor.h> 700 701 static void acpi_map_cpu2node(acpi_handle handle, int cpu, int physid) 702 { 703 #ifdef CONFIG_ACPI_NUMA 704 int nid; 705 706 nid = acpi_get_node(handle); 707 if (nid != -1) { 708 set_apicid_to_node(physid, nid); 709 numa_set_node(cpu, nid); 710 } 711 #endif 712 } 713 714 int acpi_map_cpu(acpi_handle handle, phys_cpuid_t physid, int *pcpu) 715 { 716 int cpu; 717 718 cpu = acpi_register_lapic(physid, ACPI_MADT_ENABLED); 719 if (cpu < 0) { 720 pr_info(PREFIX "Unable to map lapic to logical cpu number\n"); 721 return cpu; 722 } 723 724 acpi_processor_set_pdc(handle); 725 acpi_map_cpu2node(handle, cpu, physid); 726 727 *pcpu = cpu; 728 return 0; 729 } 730 EXPORT_SYMBOL(acpi_map_cpu); 731 732 int acpi_unmap_cpu(int cpu) 733 { 734 #ifdef CONFIG_ACPI_NUMA 735 set_apicid_to_node(per_cpu(x86_cpu_to_apicid, cpu), NUMA_NO_NODE); 736 #endif 737 738 per_cpu(x86_cpu_to_apicid, cpu) = -1; 739 set_cpu_present(cpu, false); 740 num_processors--; 741 742 return (0); 743 } 744 EXPORT_SYMBOL(acpi_unmap_cpu); 745 #endif /* CONFIG_ACPI_HOTPLUG_CPU */ 746 747 int acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base) 748 { 749 int ret = -ENOSYS; 750 #ifdef CONFIG_ACPI_HOTPLUG_IOAPIC 751 int ioapic_id; 752 u64 addr; 753 struct ioapic_domain_cfg cfg = { 754 .type = IOAPIC_DOMAIN_DYNAMIC, 755 .ops = &mp_ioapic_irqdomain_ops, 756 }; 757 758 ioapic_id = acpi_get_ioapic_id(handle, gsi_base, &addr); 759 if (ioapic_id < 0) { 760 unsigned long long uid; 761 acpi_status status; 762 763 status = acpi_evaluate_integer(handle, METHOD_NAME__UID, 764 NULL, &uid); 765 if (ACPI_FAILURE(status)) { 766 acpi_handle_warn(handle, "failed to get IOAPIC ID.\n"); 767 return -EINVAL; 768 } 769 ioapic_id = (int)uid; 770 } 771 772 mutex_lock(&acpi_ioapic_lock); 773 ret = mp_register_ioapic(ioapic_id, phys_addr, gsi_base, &cfg); 774 mutex_unlock(&acpi_ioapic_lock); 775 #endif 776 777 return ret; 778 } 779 EXPORT_SYMBOL(acpi_register_ioapic); 780 781 int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base) 782 { 783 int ret = -ENOSYS; 784 785 #ifdef CONFIG_ACPI_HOTPLUG_IOAPIC 786 mutex_lock(&acpi_ioapic_lock); 787 ret = mp_unregister_ioapic(gsi_base); 788 mutex_unlock(&acpi_ioapic_lock); 789 #endif 790 791 return ret; 792 } 793 EXPORT_SYMBOL(acpi_unregister_ioapic); 794 795 /** 796 * acpi_ioapic_registered - Check whether IOAPIC assoicatied with @gsi_base 797 * has been registered 798 * @handle: ACPI handle of the IOAPIC deivce 799 * @gsi_base: GSI base associated with the IOAPIC 800 * 801 * Assume caller holds some type of lock to serialize acpi_ioapic_registered() 802 * with acpi_register_ioapic()/acpi_unregister_ioapic(). 803 */ 804 int acpi_ioapic_registered(acpi_handle handle, u32 gsi_base) 805 { 806 int ret = 0; 807 808 #ifdef CONFIG_ACPI_HOTPLUG_IOAPIC 809 mutex_lock(&acpi_ioapic_lock); 810 ret = mp_ioapic_registered(gsi_base); 811 mutex_unlock(&acpi_ioapic_lock); 812 #endif 813 814 return ret; 815 } 816 817 static int __init acpi_parse_sbf(struct acpi_table_header *table) 818 { 819 struct acpi_table_boot *sb = (struct acpi_table_boot *)table; 820 821 sbf_port = sb->cmos_index; /* Save CMOS port */ 822 823 return 0; 824 } 825 826 #ifdef CONFIG_HPET_TIMER 827 #include <asm/hpet.h> 828 829 static struct resource *hpet_res __initdata; 830 831 static int __init acpi_parse_hpet(struct acpi_table_header *table) 832 { 833 struct acpi_table_hpet *hpet_tbl = (struct acpi_table_hpet *)table; 834 835 if (hpet_tbl->address.space_id != ACPI_SPACE_MEM) { 836 printk(KERN_WARNING PREFIX "HPET timers must be located in " 837 "memory.\n"); 838 return -1; 839 } 840 841 hpet_address = hpet_tbl->address.address; 842 hpet_blockid = hpet_tbl->sequence; 843 844 /* 845 * Some broken BIOSes advertise HPET at 0x0. We really do not 846 * want to allocate a resource there. 847 */ 848 if (!hpet_address) { 849 printk(KERN_WARNING PREFIX 850 "HPET id: %#x base: %#lx is invalid\n", 851 hpet_tbl->id, hpet_address); 852 return 0; 853 } 854 #ifdef CONFIG_X86_64 855 /* 856 * Some even more broken BIOSes advertise HPET at 857 * 0xfed0000000000000 instead of 0xfed00000. Fix it up and add 858 * some noise: 859 */ 860 if (hpet_address == 0xfed0000000000000UL) { 861 if (!hpet_force_user) { 862 printk(KERN_WARNING PREFIX "HPET id: %#x " 863 "base: 0xfed0000000000000 is bogus\n " 864 "try hpet=force on the kernel command line to " 865 "fix it up to 0xfed00000.\n", hpet_tbl->id); 866 hpet_address = 0; 867 return 0; 868 } 869 printk(KERN_WARNING PREFIX 870 "HPET id: %#x base: 0xfed0000000000000 fixed up " 871 "to 0xfed00000.\n", hpet_tbl->id); 872 hpet_address >>= 32; 873 } 874 #endif 875 printk(KERN_INFO PREFIX "HPET id: %#x base: %#lx\n", 876 hpet_tbl->id, hpet_address); 877 878 /* 879 * Allocate and initialize the HPET firmware resource for adding into 880 * the resource tree during the lateinit timeframe. 881 */ 882 #define HPET_RESOURCE_NAME_SIZE 9 883 hpet_res = alloc_bootmem(sizeof(*hpet_res) + HPET_RESOURCE_NAME_SIZE); 884 885 hpet_res->name = (void *)&hpet_res[1]; 886 hpet_res->flags = IORESOURCE_MEM; 887 snprintf((char *)hpet_res->name, HPET_RESOURCE_NAME_SIZE, "HPET %u", 888 hpet_tbl->sequence); 889 890 hpet_res->start = hpet_address; 891 hpet_res->end = hpet_address + (1 * 1024) - 1; 892 893 return 0; 894 } 895 896 /* 897 * hpet_insert_resource inserts the HPET resources used into the resource 898 * tree. 899 */ 900 static __init int hpet_insert_resource(void) 901 { 902 if (!hpet_res) 903 return 1; 904 905 return insert_resource(&iomem_resource, hpet_res); 906 } 907 908 late_initcall(hpet_insert_resource); 909 910 #else 911 #define acpi_parse_hpet NULL 912 #endif 913 914 static int __init acpi_parse_fadt(struct acpi_table_header *table) 915 { 916 917 #ifdef CONFIG_X86_PM_TIMER 918 /* detect the location of the ACPI PM Timer */ 919 if (acpi_gbl_FADT.header.revision >= FADT2_REVISION_ID) { 920 /* FADT rev. 2 */ 921 if (acpi_gbl_FADT.xpm_timer_block.space_id != 922 ACPI_ADR_SPACE_SYSTEM_IO) 923 return 0; 924 925 pmtmr_ioport = acpi_gbl_FADT.xpm_timer_block.address; 926 /* 927 * "X" fields are optional extensions to the original V1.0 928 * fields, so we must selectively expand V1.0 fields if the 929 * corresponding X field is zero. 930 */ 931 if (!pmtmr_ioport) 932 pmtmr_ioport = acpi_gbl_FADT.pm_timer_block; 933 } else { 934 /* FADT rev. 1 */ 935 pmtmr_ioport = acpi_gbl_FADT.pm_timer_block; 936 } 937 if (pmtmr_ioport) 938 printk(KERN_INFO PREFIX "PM-Timer IO Port: %#x\n", 939 pmtmr_ioport); 940 #endif 941 return 0; 942 } 943 944 #ifdef CONFIG_X86_LOCAL_APIC 945 /* 946 * Parse LAPIC entries in MADT 947 * returns 0 on success, < 0 on error 948 */ 949 950 static int __init early_acpi_parse_madt_lapic_addr_ovr(void) 951 { 952 int count; 953 954 if (!cpu_has_apic) 955 return -ENODEV; 956 957 /* 958 * Note that the LAPIC address is obtained from the MADT (32-bit value) 959 * and (optionally) overriden by a LAPIC_ADDR_OVR entry (64-bit value). 960 */ 961 962 count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE, 963 acpi_parse_lapic_addr_ovr, 0); 964 if (count < 0) { 965 printk(KERN_ERR PREFIX 966 "Error parsing LAPIC address override entry\n"); 967 return count; 968 } 969 970 register_lapic_address(acpi_lapic_addr); 971 972 return count; 973 } 974 975 static int __init acpi_parse_madt_lapic_entries(void) 976 { 977 int count; 978 int x2count = 0; 979 980 if (!cpu_has_apic) 981 return -ENODEV; 982 983 /* 984 * Note that the LAPIC address is obtained from the MADT (32-bit value) 985 * and (optionally) overriden by a LAPIC_ADDR_OVR entry (64-bit value). 986 */ 987 988 count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE, 989 acpi_parse_lapic_addr_ovr, 0); 990 if (count < 0) { 991 printk(KERN_ERR PREFIX 992 "Error parsing LAPIC address override entry\n"); 993 return count; 994 } 995 996 register_lapic_address(acpi_lapic_addr); 997 998 count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_SAPIC, 999 acpi_parse_sapic, MAX_LOCAL_APIC); 1000 1001 if (!count) { 1002 x2count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_X2APIC, 1003 acpi_parse_x2apic, MAX_LOCAL_APIC); 1004 count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC, 1005 acpi_parse_lapic, MAX_LOCAL_APIC); 1006 } 1007 if (!count && !x2count) { 1008 printk(KERN_ERR PREFIX "No LAPIC entries present\n"); 1009 /* TBD: Cleanup to allow fallback to MPS */ 1010 return -ENODEV; 1011 } else if (count < 0 || x2count < 0) { 1012 printk(KERN_ERR PREFIX "Error parsing LAPIC entry\n"); 1013 /* TBD: Cleanup to allow fallback to MPS */ 1014 return count; 1015 } 1016 1017 x2count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_X2APIC_NMI, 1018 acpi_parse_x2apic_nmi, 0); 1019 count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_NMI, 1020 acpi_parse_lapic_nmi, 0); 1021 if (count < 0 || x2count < 0) { 1022 printk(KERN_ERR PREFIX "Error parsing LAPIC NMI entry\n"); 1023 /* TBD: Cleanup to allow fallback to MPS */ 1024 return count; 1025 } 1026 return 0; 1027 } 1028 #endif /* CONFIG_X86_LOCAL_APIC */ 1029 1030 #ifdef CONFIG_X86_IO_APIC 1031 static void __init mp_config_acpi_legacy_irqs(void) 1032 { 1033 int i; 1034 struct mpc_intsrc mp_irq; 1035 1036 #ifdef CONFIG_EISA 1037 /* 1038 * Fabricate the legacy ISA bus (bus #31). 1039 */ 1040 mp_bus_id_to_type[MP_ISA_BUS] = MP_BUS_ISA; 1041 #endif 1042 set_bit(MP_ISA_BUS, mp_bus_not_pci); 1043 pr_debug("Bus #%d is ISA\n", MP_ISA_BUS); 1044 1045 /* 1046 * Use the default configuration for the IRQs 0-15. Unless 1047 * overridden by (MADT) interrupt source override entries. 1048 */ 1049 for (i = 0; i < nr_legacy_irqs(); i++) { 1050 int ioapic, pin; 1051 unsigned int dstapic; 1052 int idx; 1053 u32 gsi; 1054 1055 /* Locate the gsi that irq i maps to. */ 1056 if (acpi_isa_irq_to_gsi(i, &gsi)) 1057 continue; 1058 1059 /* 1060 * Locate the IOAPIC that manages the ISA IRQ. 1061 */ 1062 ioapic = mp_find_ioapic(gsi); 1063 if (ioapic < 0) 1064 continue; 1065 pin = mp_find_ioapic_pin(ioapic, gsi); 1066 dstapic = mpc_ioapic_id(ioapic); 1067 1068 for (idx = 0; idx < mp_irq_entries; idx++) { 1069 struct mpc_intsrc *irq = mp_irqs + idx; 1070 1071 /* Do we already have a mapping for this ISA IRQ? */ 1072 if (irq->srcbus == MP_ISA_BUS && irq->srcbusirq == i) 1073 break; 1074 1075 /* Do we already have a mapping for this IOAPIC pin */ 1076 if (irq->dstapic == dstapic && irq->dstirq == pin) 1077 break; 1078 } 1079 1080 if (idx != mp_irq_entries) { 1081 printk(KERN_DEBUG "ACPI: IRQ%d used by override.\n", i); 1082 continue; /* IRQ already used */ 1083 } 1084 1085 mp_irq.type = MP_INTSRC; 1086 mp_irq.irqflag = 0; /* Conforming */ 1087 mp_irq.srcbus = MP_ISA_BUS; 1088 mp_irq.dstapic = dstapic; 1089 mp_irq.irqtype = mp_INT; 1090 mp_irq.srcbusirq = i; /* Identity mapped */ 1091 mp_irq.dstirq = pin; 1092 1093 mp_save_irq(&mp_irq); 1094 } 1095 } 1096 1097 /* 1098 * Parse IOAPIC related entries in MADT 1099 * returns 0 on success, < 0 on error 1100 */ 1101 static int __init acpi_parse_madt_ioapic_entries(void) 1102 { 1103 int count; 1104 1105 /* 1106 * ACPI interpreter is required to complete interrupt setup, 1107 * so if it is off, don't enumerate the io-apics with ACPI. 1108 * If MPS is present, it will handle them, 1109 * otherwise the system will stay in PIC mode 1110 */ 1111 if (acpi_disabled || acpi_noirq) 1112 return -ENODEV; 1113 1114 if (!cpu_has_apic) 1115 return -ENODEV; 1116 1117 /* 1118 * if "noapic" boot option, don't look for IO-APICs 1119 */ 1120 if (skip_ioapic_setup) { 1121 printk(KERN_INFO PREFIX "Skipping IOAPIC probe " 1122 "due to 'noapic' option.\n"); 1123 return -ENODEV; 1124 } 1125 1126 count = acpi_table_parse_madt(ACPI_MADT_TYPE_IO_APIC, acpi_parse_ioapic, 1127 MAX_IO_APICS); 1128 if (!count) { 1129 printk(KERN_ERR PREFIX "No IOAPIC entries present\n"); 1130 return -ENODEV; 1131 } else if (count < 0) { 1132 printk(KERN_ERR PREFIX "Error parsing IOAPIC entry\n"); 1133 return count; 1134 } 1135 1136 count = acpi_table_parse_madt(ACPI_MADT_TYPE_INTERRUPT_OVERRIDE, 1137 acpi_parse_int_src_ovr, nr_irqs); 1138 if (count < 0) { 1139 printk(KERN_ERR PREFIX 1140 "Error parsing interrupt source overrides entry\n"); 1141 /* TBD: Cleanup to allow fallback to MPS */ 1142 return count; 1143 } 1144 1145 /* 1146 * If BIOS did not supply an INT_SRC_OVR for the SCI 1147 * pretend we got one so we can set the SCI flags. 1148 */ 1149 if (!acpi_sci_override_gsi) 1150 acpi_sci_ioapic_setup(acpi_gbl_FADT.sci_interrupt, 0, 0, 1151 acpi_gbl_FADT.sci_interrupt); 1152 1153 /* Fill in identity legacy mappings where no override */ 1154 mp_config_acpi_legacy_irqs(); 1155 1156 count = acpi_table_parse_madt(ACPI_MADT_TYPE_NMI_SOURCE, 1157 acpi_parse_nmi_src, nr_irqs); 1158 if (count < 0) { 1159 printk(KERN_ERR PREFIX "Error parsing NMI SRC entry\n"); 1160 /* TBD: Cleanup to allow fallback to MPS */ 1161 return count; 1162 } 1163 1164 return 0; 1165 } 1166 #else 1167 static inline int acpi_parse_madt_ioapic_entries(void) 1168 { 1169 return -1; 1170 } 1171 #endif /* !CONFIG_X86_IO_APIC */ 1172 1173 static void __init early_acpi_process_madt(void) 1174 { 1175 #ifdef CONFIG_X86_LOCAL_APIC 1176 int error; 1177 1178 if (!acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) { 1179 1180 /* 1181 * Parse MADT LAPIC entries 1182 */ 1183 error = early_acpi_parse_madt_lapic_addr_ovr(); 1184 if (!error) { 1185 acpi_lapic = 1; 1186 smp_found_config = 1; 1187 } 1188 if (error == -EINVAL) { 1189 /* 1190 * Dell Precision Workstation 410, 610 come here. 1191 */ 1192 printk(KERN_ERR PREFIX 1193 "Invalid BIOS MADT, disabling ACPI\n"); 1194 disable_acpi(); 1195 } 1196 } 1197 #endif 1198 } 1199 1200 static void __init acpi_process_madt(void) 1201 { 1202 #ifdef CONFIG_X86_LOCAL_APIC 1203 int error; 1204 1205 if (!acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) { 1206 1207 /* 1208 * Parse MADT LAPIC entries 1209 */ 1210 error = acpi_parse_madt_lapic_entries(); 1211 if (!error) { 1212 acpi_lapic = 1; 1213 1214 /* 1215 * Parse MADT IO-APIC entries 1216 */ 1217 mutex_lock(&acpi_ioapic_lock); 1218 error = acpi_parse_madt_ioapic_entries(); 1219 mutex_unlock(&acpi_ioapic_lock); 1220 if (!error) { 1221 acpi_set_irq_model_ioapic(); 1222 1223 smp_found_config = 1; 1224 } 1225 } 1226 if (error == -EINVAL) { 1227 /* 1228 * Dell Precision Workstation 410, 610 come here. 1229 */ 1230 printk(KERN_ERR PREFIX 1231 "Invalid BIOS MADT, disabling ACPI\n"); 1232 disable_acpi(); 1233 } 1234 } else { 1235 /* 1236 * ACPI found no MADT, and so ACPI wants UP PIC mode. 1237 * In the event an MPS table was found, forget it. 1238 * Boot with "acpi=off" to use MPS on such a system. 1239 */ 1240 if (smp_found_config) { 1241 printk(KERN_WARNING PREFIX 1242 "No APIC-table, disabling MPS\n"); 1243 smp_found_config = 0; 1244 } 1245 } 1246 1247 /* 1248 * ACPI supports both logical (e.g. Hyper-Threading) and physical 1249 * processors, where MPS only supports physical. 1250 */ 1251 if (acpi_lapic && acpi_ioapic) 1252 printk(KERN_INFO "Using ACPI (MADT) for SMP configuration " 1253 "information\n"); 1254 else if (acpi_lapic) 1255 printk(KERN_INFO "Using ACPI for processor (LAPIC) " 1256 "configuration information\n"); 1257 #endif 1258 return; 1259 } 1260 1261 static int __init disable_acpi_irq(const struct dmi_system_id *d) 1262 { 1263 if (!acpi_force) { 1264 printk(KERN_NOTICE "%s detected: force use of acpi=noirq\n", 1265 d->ident); 1266 acpi_noirq_set(); 1267 } 1268 return 0; 1269 } 1270 1271 static int __init disable_acpi_pci(const struct dmi_system_id *d) 1272 { 1273 if (!acpi_force) { 1274 printk(KERN_NOTICE "%s detected: force use of pci=noacpi\n", 1275 d->ident); 1276 acpi_disable_pci(); 1277 } 1278 return 0; 1279 } 1280 1281 static int __init dmi_disable_acpi(const struct dmi_system_id *d) 1282 { 1283 if (!acpi_force) { 1284 printk(KERN_NOTICE "%s detected: acpi off\n", d->ident); 1285 disable_acpi(); 1286 } else { 1287 printk(KERN_NOTICE 1288 "Warning: DMI blacklist says broken, but acpi forced\n"); 1289 } 1290 return 0; 1291 } 1292 1293 /* 1294 * Force ignoring BIOS IRQ0 override 1295 */ 1296 static int __init dmi_ignore_irq0_timer_override(const struct dmi_system_id *d) 1297 { 1298 if (!acpi_skip_timer_override) { 1299 pr_notice("%s detected: Ignoring BIOS IRQ0 override\n", 1300 d->ident); 1301 acpi_skip_timer_override = 1; 1302 } 1303 return 0; 1304 } 1305 1306 /* 1307 * ACPI offers an alternative platform interface model that removes 1308 * ACPI hardware requirements for platforms that do not implement 1309 * the PC Architecture. 1310 * 1311 * We initialize the Hardware-reduced ACPI model here: 1312 */ 1313 static void __init acpi_reduced_hw_init(void) 1314 { 1315 if (acpi_gbl_reduced_hardware) { 1316 /* 1317 * Override x86_init functions and bypass legacy pic 1318 * in Hardware-reduced ACPI mode 1319 */ 1320 x86_init.timers.timer_init = x86_init_noop; 1321 x86_init.irqs.pre_vector_init = x86_init_noop; 1322 legacy_pic = &null_legacy_pic; 1323 } 1324 } 1325 1326 /* 1327 * If your system is blacklisted here, but you find that acpi=force 1328 * works for you, please contact linux-acpi@vger.kernel.org 1329 */ 1330 static struct dmi_system_id __initdata acpi_dmi_table[] = { 1331 /* 1332 * Boxes that need ACPI disabled 1333 */ 1334 { 1335 .callback = dmi_disable_acpi, 1336 .ident = "IBM Thinkpad", 1337 .matches = { 1338 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), 1339 DMI_MATCH(DMI_BOARD_NAME, "2629H1G"), 1340 }, 1341 }, 1342 1343 /* 1344 * Boxes that need ACPI PCI IRQ routing disabled 1345 */ 1346 { 1347 .callback = disable_acpi_irq, 1348 .ident = "ASUS A7V", 1349 .matches = { 1350 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC"), 1351 DMI_MATCH(DMI_BOARD_NAME, "<A7V>"), 1352 /* newer BIOS, Revision 1011, does work */ 1353 DMI_MATCH(DMI_BIOS_VERSION, 1354 "ASUS A7V ACPI BIOS Revision 1007"), 1355 }, 1356 }, 1357 { 1358 /* 1359 * Latest BIOS for IBM 600E (1.16) has bad pcinum 1360 * for LPC bridge, which is needed for the PCI 1361 * interrupt links to work. DSDT fix is in bug 5966. 1362 * 2645, 2646 model numbers are shared with 600/600E/600X 1363 */ 1364 .callback = disable_acpi_irq, 1365 .ident = "IBM Thinkpad 600 Series 2645", 1366 .matches = { 1367 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), 1368 DMI_MATCH(DMI_BOARD_NAME, "2645"), 1369 }, 1370 }, 1371 { 1372 .callback = disable_acpi_irq, 1373 .ident = "IBM Thinkpad 600 Series 2646", 1374 .matches = { 1375 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), 1376 DMI_MATCH(DMI_BOARD_NAME, "2646"), 1377 }, 1378 }, 1379 /* 1380 * Boxes that need ACPI PCI IRQ routing and PCI scan disabled 1381 */ 1382 { /* _BBN 0 bug */ 1383 .callback = disable_acpi_pci, 1384 .ident = "ASUS PR-DLS", 1385 .matches = { 1386 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."), 1387 DMI_MATCH(DMI_BOARD_NAME, "PR-DLS"), 1388 DMI_MATCH(DMI_BIOS_VERSION, 1389 "ASUS PR-DLS ACPI BIOS Revision 1010"), 1390 DMI_MATCH(DMI_BIOS_DATE, "03/21/2003") 1391 }, 1392 }, 1393 { 1394 .callback = disable_acpi_pci, 1395 .ident = "Acer TravelMate 36x Laptop", 1396 .matches = { 1397 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 1398 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 360"), 1399 }, 1400 }, 1401 {} 1402 }; 1403 1404 /* second table for DMI checks that should run after early-quirks */ 1405 static struct dmi_system_id __initdata acpi_dmi_table_late[] = { 1406 /* 1407 * HP laptops which use a DSDT reporting as HP/SB400/10000, 1408 * which includes some code which overrides all temperature 1409 * trip points to 16C if the INTIN2 input of the I/O APIC 1410 * is enabled. This input is incorrectly designated the 1411 * ISA IRQ 0 via an interrupt source override even though 1412 * it is wired to the output of the master 8259A and INTIN0 1413 * is not connected at all. Force ignoring BIOS IRQ0 1414 * override in that cases. 1415 */ 1416 { 1417 .callback = dmi_ignore_irq0_timer_override, 1418 .ident = "HP nx6115 laptop", 1419 .matches = { 1420 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), 1421 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6115"), 1422 }, 1423 }, 1424 { 1425 .callback = dmi_ignore_irq0_timer_override, 1426 .ident = "HP NX6125 laptop", 1427 .matches = { 1428 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), 1429 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6125"), 1430 }, 1431 }, 1432 { 1433 .callback = dmi_ignore_irq0_timer_override, 1434 .ident = "HP NX6325 laptop", 1435 .matches = { 1436 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), 1437 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6325"), 1438 }, 1439 }, 1440 { 1441 .callback = dmi_ignore_irq0_timer_override, 1442 .ident = "HP 6715b laptop", 1443 .matches = { 1444 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), 1445 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq 6715b"), 1446 }, 1447 }, 1448 { 1449 .callback = dmi_ignore_irq0_timer_override, 1450 .ident = "FUJITSU SIEMENS", 1451 .matches = { 1452 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"), 1453 DMI_MATCH(DMI_PRODUCT_NAME, "AMILO PRO V2030"), 1454 }, 1455 }, 1456 {} 1457 }; 1458 1459 /* 1460 * acpi_boot_table_init() and acpi_boot_init() 1461 * called from setup_arch(), always. 1462 * 1. checksums all tables 1463 * 2. enumerates lapics 1464 * 3. enumerates io-apics 1465 * 1466 * acpi_table_init() is separate to allow reading SRAT without 1467 * other side effects. 1468 * 1469 * side effects of acpi_boot_init: 1470 * acpi_lapic = 1 if LAPIC found 1471 * acpi_ioapic = 1 if IOAPIC found 1472 * if (acpi_lapic && acpi_ioapic) smp_found_config = 1; 1473 * if acpi_blacklisted() acpi_disabled = 1; 1474 * acpi_irq_model=... 1475 * ... 1476 */ 1477 1478 void __init acpi_boot_table_init(void) 1479 { 1480 dmi_check_system(acpi_dmi_table); 1481 1482 /* 1483 * If acpi_disabled, bail out 1484 */ 1485 if (acpi_disabled) 1486 return; 1487 1488 /* 1489 * Initialize the ACPI boot-time table parser. 1490 */ 1491 if (acpi_table_init()) { 1492 disable_acpi(); 1493 return; 1494 } 1495 1496 acpi_table_parse(ACPI_SIG_BOOT, acpi_parse_sbf); 1497 1498 /* 1499 * blacklist may disable ACPI entirely 1500 */ 1501 if (acpi_blacklisted()) { 1502 if (acpi_force) { 1503 printk(KERN_WARNING PREFIX "acpi=force override\n"); 1504 } else { 1505 printk(KERN_WARNING PREFIX "Disabling ACPI support\n"); 1506 disable_acpi(); 1507 return; 1508 } 1509 } 1510 } 1511 1512 int __init early_acpi_boot_init(void) 1513 { 1514 /* 1515 * If acpi_disabled, bail out 1516 */ 1517 if (acpi_disabled) 1518 return 1; 1519 1520 /* 1521 * Process the Multiple APIC Description Table (MADT), if present 1522 */ 1523 early_acpi_process_madt(); 1524 1525 /* 1526 * Hardware-reduced ACPI mode initialization: 1527 */ 1528 acpi_reduced_hw_init(); 1529 1530 return 0; 1531 } 1532 1533 int __init acpi_boot_init(void) 1534 { 1535 /* those are executed after early-quirks are executed */ 1536 dmi_check_system(acpi_dmi_table_late); 1537 1538 /* 1539 * If acpi_disabled, bail out 1540 */ 1541 if (acpi_disabled) 1542 return 1; 1543 1544 acpi_table_parse(ACPI_SIG_BOOT, acpi_parse_sbf); 1545 1546 /* 1547 * set sci_int and PM timer address 1548 */ 1549 acpi_table_parse(ACPI_SIG_FADT, acpi_parse_fadt); 1550 1551 /* 1552 * Process the Multiple APIC Description Table (MADT), if present 1553 */ 1554 acpi_process_madt(); 1555 1556 acpi_table_parse(ACPI_SIG_HPET, acpi_parse_hpet); 1557 1558 if (!acpi_noirq) 1559 x86_init.pci.init = pci_acpi_init; 1560 1561 return 0; 1562 } 1563 1564 static int __init parse_acpi(char *arg) 1565 { 1566 if (!arg) 1567 return -EINVAL; 1568 1569 /* "acpi=off" disables both ACPI table parsing and interpreter */ 1570 if (strcmp(arg, "off") == 0) { 1571 disable_acpi(); 1572 } 1573 /* acpi=force to over-ride black-list */ 1574 else if (strcmp(arg, "force") == 0) { 1575 acpi_force = 1; 1576 acpi_disabled = 0; 1577 } 1578 /* acpi=strict disables out-of-spec workarounds */ 1579 else if (strcmp(arg, "strict") == 0) { 1580 acpi_strict = 1; 1581 } 1582 /* acpi=rsdt use RSDT instead of XSDT */ 1583 else if (strcmp(arg, "rsdt") == 0) { 1584 acpi_gbl_do_not_use_xsdt = TRUE; 1585 } 1586 /* "acpi=noirq" disables ACPI interrupt routing */ 1587 else if (strcmp(arg, "noirq") == 0) { 1588 acpi_noirq_set(); 1589 } 1590 /* "acpi=copy_dsdt" copys DSDT */ 1591 else if (strcmp(arg, "copy_dsdt") == 0) { 1592 acpi_gbl_copy_dsdt_locally = 1; 1593 } 1594 /* "acpi=nocmcff" disables FF mode for corrected errors */ 1595 else if (strcmp(arg, "nocmcff") == 0) { 1596 acpi_disable_cmcff = 1; 1597 } else { 1598 /* Core will printk when we return error. */ 1599 return -EINVAL; 1600 } 1601 return 0; 1602 } 1603 early_param("acpi", parse_acpi); 1604 1605 /* FIXME: Using pci= for an ACPI parameter is a travesty. */ 1606 static int __init parse_pci(char *arg) 1607 { 1608 if (arg && strcmp(arg, "noacpi") == 0) 1609 acpi_disable_pci(); 1610 return 0; 1611 } 1612 early_param("pci", parse_pci); 1613 1614 int __init acpi_mps_check(void) 1615 { 1616 #if defined(CONFIG_X86_LOCAL_APIC) && !defined(CONFIG_X86_MPPARSE) 1617 /* mptable code is not built-in*/ 1618 if (acpi_disabled || acpi_noirq) { 1619 printk(KERN_WARNING "MPS support code is not built-in.\n" 1620 "Using acpi=off or acpi=noirq or pci=noacpi " 1621 "may have problem\n"); 1622 return 1; 1623 } 1624 #endif 1625 return 0; 1626 } 1627 1628 #ifdef CONFIG_X86_IO_APIC 1629 static int __init parse_acpi_skip_timer_override(char *arg) 1630 { 1631 acpi_skip_timer_override = 1; 1632 return 0; 1633 } 1634 early_param("acpi_skip_timer_override", parse_acpi_skip_timer_override); 1635 1636 static int __init parse_acpi_use_timer_override(char *arg) 1637 { 1638 acpi_use_timer_override = 1; 1639 return 0; 1640 } 1641 early_param("acpi_use_timer_override", parse_acpi_use_timer_override); 1642 #endif /* CONFIG_X86_IO_APIC */ 1643 1644 static int __init setup_acpi_sci(char *s) 1645 { 1646 if (!s) 1647 return -EINVAL; 1648 if (!strcmp(s, "edge")) 1649 acpi_sci_flags = ACPI_MADT_TRIGGER_EDGE | 1650 (acpi_sci_flags & ~ACPI_MADT_TRIGGER_MASK); 1651 else if (!strcmp(s, "level")) 1652 acpi_sci_flags = ACPI_MADT_TRIGGER_LEVEL | 1653 (acpi_sci_flags & ~ACPI_MADT_TRIGGER_MASK); 1654 else if (!strcmp(s, "high")) 1655 acpi_sci_flags = ACPI_MADT_POLARITY_ACTIVE_HIGH | 1656 (acpi_sci_flags & ~ACPI_MADT_POLARITY_MASK); 1657 else if (!strcmp(s, "low")) 1658 acpi_sci_flags = ACPI_MADT_POLARITY_ACTIVE_LOW | 1659 (acpi_sci_flags & ~ACPI_MADT_POLARITY_MASK); 1660 else 1661 return -EINVAL; 1662 return 0; 1663 } 1664 early_param("acpi_sci", setup_acpi_sci); 1665 1666 int __acpi_acquire_global_lock(unsigned int *lock) 1667 { 1668 unsigned int old, new, val; 1669 do { 1670 old = *lock; 1671 new = (((old & ~0x3) + 2) + ((old >> 1) & 0x1)); 1672 val = cmpxchg(lock, old, new); 1673 } while (unlikely (val != old)); 1674 return (new < 3) ? -1 : 0; 1675 } 1676 1677 int __acpi_release_global_lock(unsigned int *lock) 1678 { 1679 unsigned int old, new, val; 1680 do { 1681 old = *lock; 1682 new = old & ~0x3; 1683 val = cmpxchg(lock, old, new); 1684 } while (unlikely (val != old)); 1685 return old & 0x1; 1686 } 1687 1688 void __init arch_reserve_mem_area(acpi_physical_address addr, size_t size) 1689 { 1690 e820_add_region(addr, size, E820_ACPI); 1691 update_e820(); 1692 } 1693