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