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 u32 acpi_rsdt_forced; 50 int acpi_disabled; 51 EXPORT_SYMBOL(acpi_disabled); 52 53 #ifdef CONFIG_X86_64 54 # include <asm/proto.h> 55 #endif /* X86 */ 56 57 #define BAD_MADT_ENTRY(entry, end) ( \ 58 (!entry) || (unsigned long)entry + sizeof(*entry) > end || \ 59 ((struct acpi_subtable_header *)entry)->length < sizeof(*entry)) 60 61 #define PREFIX "ACPI: " 62 63 int acpi_noirq; /* skip ACPI IRQ initialization */ 64 int acpi_pci_disabled; /* skip ACPI PCI scan and IRQ initialization */ 65 EXPORT_SYMBOL(acpi_pci_disabled); 66 67 int acpi_lapic; 68 int acpi_ioapic; 69 int acpi_strict; 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 * Temporarily use the virtual area starting from FIX_IO_APIC_BASE_END, 145 * to map the target physical address. The problem is that set_fixmap() 146 * provides a single page, and it is possible that the page is not 147 * sufficient. 148 * By using this area, we can map up to MAX_IO_APICS pages temporarily, 149 * i.e. until the next __va_range() call. 150 * 151 * Important Safety Note: The fixed I/O APIC page numbers are *subtracted* 152 * from the fixed base. That's why we start at FIX_IO_APIC_BASE_END and 153 * count idx down while incrementing the phys address. 154 */ 155 char *__init __acpi_map_table(unsigned long phys, unsigned long size) 156 { 157 158 if (!phys || !size) 159 return NULL; 160 161 return early_ioremap(phys, size); 162 } 163 void __init __acpi_unmap_table(char *map, unsigned long size) 164 { 165 if (!map || !size) 166 return; 167 168 early_iounmap(map, size); 169 } 170 171 #ifdef CONFIG_X86_LOCAL_APIC 172 static int __init acpi_parse_madt(struct acpi_table_header *table) 173 { 174 struct acpi_table_madt *madt = NULL; 175 176 if (!cpu_has_apic) 177 return -EINVAL; 178 179 madt = (struct acpi_table_madt *)table; 180 if (!madt) { 181 printk(KERN_WARNING PREFIX "Unable to map MADT\n"); 182 return -ENODEV; 183 } 184 185 if (madt->address) { 186 acpi_lapic_addr = (u64) madt->address; 187 188 printk(KERN_DEBUG PREFIX "Local APIC address 0x%08x\n", 189 madt->address); 190 } 191 192 default_acpi_madt_oem_check(madt->header.oem_id, 193 madt->header.oem_table_id); 194 195 return 0; 196 } 197 198 static void acpi_register_lapic(int id, u8 enabled) 199 { 200 unsigned int ver = 0; 201 202 if (id >= (MAX_LOCAL_APIC-1)) { 203 printk(KERN_INFO PREFIX "skipped apicid that is too big\n"); 204 return; 205 } 206 207 if (!enabled) { 208 ++disabled_cpus; 209 return; 210 } 211 212 if (boot_cpu_physical_apicid != -1U) 213 ver = apic_version[boot_cpu_physical_apicid]; 214 215 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 *pcpu) 624 { 625 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; 626 union acpi_object *obj; 627 struct acpi_madt_local_apic *lapic; 628 cpumask_var_t tmp_map, new_map; 629 u8 physid; 630 int cpu; 631 int retval = -ENOMEM; 632 633 if (ACPI_FAILURE(acpi_evaluate_object(handle, "_MAT", NULL, &buffer))) 634 return -EINVAL; 635 636 if (!buffer.length || !buffer.pointer) 637 return -EINVAL; 638 639 obj = buffer.pointer; 640 if (obj->type != ACPI_TYPE_BUFFER || 641 obj->buffer.length < sizeof(*lapic)) { 642 kfree(buffer.pointer); 643 return -EINVAL; 644 } 645 646 lapic = (struct acpi_madt_local_apic *)obj->buffer.pointer; 647 648 if (lapic->header.type != ACPI_MADT_TYPE_LOCAL_APIC || 649 !(lapic->lapic_flags & ACPI_MADT_ENABLED)) { 650 kfree(buffer.pointer); 651 return -EINVAL; 652 } 653 654 physid = lapic->id; 655 656 kfree(buffer.pointer); 657 buffer.length = ACPI_ALLOCATE_BUFFER; 658 buffer.pointer = NULL; 659 lapic = NULL; 660 661 if (!alloc_cpumask_var(&tmp_map, GFP_KERNEL)) 662 goto out; 663 664 if (!alloc_cpumask_var(&new_map, GFP_KERNEL)) 665 goto free_tmp_map; 666 667 cpumask_copy(tmp_map, cpu_present_mask); 668 acpi_register_lapic(physid, ACPI_MADT_ENABLED); 669 670 /* 671 * If acpi_register_lapic successfully generates a new logical cpu 672 * number, then the following will get us exactly what was mapped 673 */ 674 cpumask_andnot(new_map, cpu_present_mask, tmp_map); 675 if (cpumask_empty(new_map)) { 676 printk ("Unable to map lapic to logical cpu number\n"); 677 retval = -EINVAL; 678 goto free_new_map; 679 } 680 681 acpi_processor_set_pdc(handle); 682 683 cpu = cpumask_first(new_map); 684 acpi_map_cpu2node(handle, cpu, physid); 685 686 *pcpu = cpu; 687 retval = 0; 688 689 free_new_map: 690 free_cpumask_var(new_map); 691 free_tmp_map: 692 free_cpumask_var(tmp_map); 693 out: 694 return retval; 695 } 696 697 /* wrapper to silence section mismatch warning */ 698 int __ref acpi_map_lsapic(acpi_handle handle, int *pcpu) 699 { 700 return _acpi_map_lsapic(handle, pcpu); 701 } 702 EXPORT_SYMBOL(acpi_map_lsapic); 703 704 int acpi_unmap_lsapic(int cpu) 705 { 706 #ifdef CONFIG_ACPI_NUMA 707 set_apicid_to_node(per_cpu(x86_cpu_to_apicid, cpu), NUMA_NO_NODE); 708 #endif 709 710 per_cpu(x86_cpu_to_apicid, cpu) = -1; 711 set_cpu_present(cpu, false); 712 num_processors--; 713 714 return (0); 715 } 716 717 EXPORT_SYMBOL(acpi_unmap_lsapic); 718 #endif /* CONFIG_ACPI_HOTPLUG_CPU */ 719 720 int acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base) 721 { 722 /* TBD */ 723 return -EINVAL; 724 } 725 726 EXPORT_SYMBOL(acpi_register_ioapic); 727 728 int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base) 729 { 730 /* TBD */ 731 return -EINVAL; 732 } 733 734 EXPORT_SYMBOL(acpi_unregister_ioapic); 735 736 static int __init acpi_parse_sbf(struct acpi_table_header *table) 737 { 738 struct acpi_table_boot *sb; 739 740 sb = (struct acpi_table_boot *)table; 741 if (!sb) { 742 printk(KERN_WARNING PREFIX "Unable to map SBF\n"); 743 return -ENODEV; 744 } 745 746 sbf_port = sb->cmos_index; /* Save CMOS port */ 747 748 return 0; 749 } 750 751 #ifdef CONFIG_HPET_TIMER 752 #include <asm/hpet.h> 753 754 static struct __initdata resource *hpet_res; 755 756 static int __init acpi_parse_hpet(struct acpi_table_header *table) 757 { 758 struct acpi_table_hpet *hpet_tbl; 759 760 hpet_tbl = (struct acpi_table_hpet *)table; 761 if (!hpet_tbl) { 762 printk(KERN_WARNING PREFIX "Unable to map HPET\n"); 763 return -ENODEV; 764 } 765 766 if (hpet_tbl->address.space_id != ACPI_SPACE_MEM) { 767 printk(KERN_WARNING PREFIX "HPET timers must be located in " 768 "memory.\n"); 769 return -1; 770 } 771 772 hpet_address = hpet_tbl->address.address; 773 hpet_blockid = hpet_tbl->sequence; 774 775 /* 776 * Some broken BIOSes advertise HPET at 0x0. We really do not 777 * want to allocate a resource there. 778 */ 779 if (!hpet_address) { 780 printk(KERN_WARNING PREFIX 781 "HPET id: %#x base: %#lx is invalid\n", 782 hpet_tbl->id, hpet_address); 783 return 0; 784 } 785 #ifdef CONFIG_X86_64 786 /* 787 * Some even more broken BIOSes advertise HPET at 788 * 0xfed0000000000000 instead of 0xfed00000. Fix it up and add 789 * some noise: 790 */ 791 if (hpet_address == 0xfed0000000000000UL) { 792 if (!hpet_force_user) { 793 printk(KERN_WARNING PREFIX "HPET id: %#x " 794 "base: 0xfed0000000000000 is bogus\n " 795 "try hpet=force on the kernel command line to " 796 "fix it up to 0xfed00000.\n", hpet_tbl->id); 797 hpet_address = 0; 798 return 0; 799 } 800 printk(KERN_WARNING PREFIX 801 "HPET id: %#x base: 0xfed0000000000000 fixed up " 802 "to 0xfed00000.\n", hpet_tbl->id); 803 hpet_address >>= 32; 804 } 805 #endif 806 printk(KERN_INFO PREFIX "HPET id: %#x base: %#lx\n", 807 hpet_tbl->id, hpet_address); 808 809 /* 810 * Allocate and initialize the HPET firmware resource for adding into 811 * the resource tree during the lateinit timeframe. 812 */ 813 #define HPET_RESOURCE_NAME_SIZE 9 814 hpet_res = alloc_bootmem(sizeof(*hpet_res) + HPET_RESOURCE_NAME_SIZE); 815 816 hpet_res->name = (void *)&hpet_res[1]; 817 hpet_res->flags = IORESOURCE_MEM; 818 snprintf((char *)hpet_res->name, HPET_RESOURCE_NAME_SIZE, "HPET %u", 819 hpet_tbl->sequence); 820 821 hpet_res->start = hpet_address; 822 hpet_res->end = hpet_address + (1 * 1024) - 1; 823 824 return 0; 825 } 826 827 /* 828 * hpet_insert_resource inserts the HPET resources used into the resource 829 * tree. 830 */ 831 static __init int hpet_insert_resource(void) 832 { 833 if (!hpet_res) 834 return 1; 835 836 return insert_resource(&iomem_resource, hpet_res); 837 } 838 839 late_initcall(hpet_insert_resource); 840 841 #else 842 #define acpi_parse_hpet NULL 843 #endif 844 845 static int __init acpi_parse_fadt(struct acpi_table_header *table) 846 { 847 848 #ifdef CONFIG_X86_PM_TIMER 849 /* detect the location of the ACPI PM Timer */ 850 if (acpi_gbl_FADT.header.revision >= FADT2_REVISION_ID) { 851 /* FADT rev. 2 */ 852 if (acpi_gbl_FADT.xpm_timer_block.space_id != 853 ACPI_ADR_SPACE_SYSTEM_IO) 854 return 0; 855 856 pmtmr_ioport = acpi_gbl_FADT.xpm_timer_block.address; 857 /* 858 * "X" fields are optional extensions to the original V1.0 859 * fields, so we must selectively expand V1.0 fields if the 860 * corresponding X field is zero. 861 */ 862 if (!pmtmr_ioport) 863 pmtmr_ioport = acpi_gbl_FADT.pm_timer_block; 864 } else { 865 /* FADT rev. 1 */ 866 pmtmr_ioport = acpi_gbl_FADT.pm_timer_block; 867 } 868 if (pmtmr_ioport) 869 printk(KERN_INFO PREFIX "PM-Timer IO Port: %#x\n", 870 pmtmr_ioport); 871 #endif 872 return 0; 873 } 874 875 #ifdef CONFIG_X86_LOCAL_APIC 876 /* 877 * Parse LAPIC entries in MADT 878 * returns 0 on success, < 0 on error 879 */ 880 881 static int __init early_acpi_parse_madt_lapic_addr_ovr(void) 882 { 883 int count; 884 885 if (!cpu_has_apic) 886 return -ENODEV; 887 888 /* 889 * Note that the LAPIC address is obtained from the MADT (32-bit value) 890 * and (optionally) overriden by a LAPIC_ADDR_OVR entry (64-bit value). 891 */ 892 893 count = 894 acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE, 895 acpi_parse_lapic_addr_ovr, 0); 896 if (count < 0) { 897 printk(KERN_ERR PREFIX 898 "Error parsing LAPIC address override entry\n"); 899 return count; 900 } 901 902 register_lapic_address(acpi_lapic_addr); 903 904 return count; 905 } 906 907 static int __init acpi_parse_madt_lapic_entries(void) 908 { 909 int count; 910 int x2count = 0; 911 912 if (!cpu_has_apic) 913 return -ENODEV; 914 915 /* 916 * Note that the LAPIC address is obtained from the MADT (32-bit value) 917 * and (optionally) overriden by a LAPIC_ADDR_OVR entry (64-bit value). 918 */ 919 920 count = 921 acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE, 922 acpi_parse_lapic_addr_ovr, 0); 923 if (count < 0) { 924 printk(KERN_ERR PREFIX 925 "Error parsing LAPIC address override entry\n"); 926 return count; 927 } 928 929 register_lapic_address(acpi_lapic_addr); 930 931 count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_SAPIC, 932 acpi_parse_sapic, MAX_LOCAL_APIC); 933 934 if (!count) { 935 x2count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_X2APIC, 936 acpi_parse_x2apic, MAX_LOCAL_APIC); 937 count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC, 938 acpi_parse_lapic, MAX_LOCAL_APIC); 939 } 940 if (!count && !x2count) { 941 printk(KERN_ERR PREFIX "No LAPIC entries present\n"); 942 /* TBD: Cleanup to allow fallback to MPS */ 943 return -ENODEV; 944 } else if (count < 0 || x2count < 0) { 945 printk(KERN_ERR PREFIX "Error parsing LAPIC entry\n"); 946 /* TBD: Cleanup to allow fallback to MPS */ 947 return count; 948 } 949 950 x2count = 951 acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_X2APIC_NMI, 952 acpi_parse_x2apic_nmi, 0); 953 count = 954 acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_NMI, acpi_parse_lapic_nmi, 0); 955 if (count < 0 || x2count < 0) { 956 printk(KERN_ERR PREFIX "Error parsing LAPIC NMI entry\n"); 957 /* TBD: Cleanup to allow fallback to MPS */ 958 return count; 959 } 960 return 0; 961 } 962 #endif /* CONFIG_X86_LOCAL_APIC */ 963 964 #ifdef CONFIG_X86_IO_APIC 965 #define MP_ISA_BUS 0 966 967 #ifdef CONFIG_X86_ES7000 968 extern int es7000_plat; 969 #endif 970 971 void __init mp_override_legacy_irq(u8 bus_irq, u8 polarity, u8 trigger, u32 gsi) 972 { 973 int ioapic; 974 int pin; 975 struct mpc_intsrc mp_irq; 976 977 /* 978 * Convert 'gsi' to 'ioapic.pin'. 979 */ 980 ioapic = mp_find_ioapic(gsi); 981 if (ioapic < 0) 982 return; 983 pin = mp_find_ioapic_pin(ioapic, gsi); 984 985 /* 986 * TBD: This check is for faulty timer entries, where the override 987 * erroneously sets the trigger to level, resulting in a HUGE 988 * increase of timer interrupts! 989 */ 990 if ((bus_irq == 0) && (trigger == 3)) 991 trigger = 1; 992 993 mp_irq.type = MP_INTSRC; 994 mp_irq.irqtype = mp_INT; 995 mp_irq.irqflag = (trigger << 2) | polarity; 996 mp_irq.srcbus = MP_ISA_BUS; 997 mp_irq.srcbusirq = bus_irq; /* IRQ */ 998 mp_irq.dstapic = mpc_ioapic_id(ioapic); /* APIC ID */ 999 mp_irq.dstirq = pin; /* INTIN# */ 1000 1001 mp_save_irq(&mp_irq); 1002 1003 isa_irq_to_gsi[bus_irq] = gsi; 1004 } 1005 1006 void __init mp_config_acpi_legacy_irqs(void) 1007 { 1008 int i; 1009 struct mpc_intsrc mp_irq; 1010 1011 #ifdef CONFIG_EISA 1012 /* 1013 * Fabricate the legacy ISA bus (bus #31). 1014 */ 1015 mp_bus_id_to_type[MP_ISA_BUS] = MP_BUS_ISA; 1016 #endif 1017 set_bit(MP_ISA_BUS, mp_bus_not_pci); 1018 pr_debug("Bus #%d is ISA\n", MP_ISA_BUS); 1019 1020 #ifdef CONFIG_X86_ES7000 1021 /* 1022 * Older generations of ES7000 have no legacy identity mappings 1023 */ 1024 if (es7000_plat == 1) 1025 return; 1026 #endif 1027 1028 /* 1029 * Use the default configuration for the IRQs 0-15. Unless 1030 * overridden by (MADT) interrupt source override entries. 1031 */ 1032 for (i = 0; i < 16; i++) { 1033 int ioapic, pin; 1034 unsigned int dstapic; 1035 int idx; 1036 u32 gsi; 1037 1038 /* Locate the gsi that irq i maps to. */ 1039 if (acpi_isa_irq_to_gsi(i, &gsi)) 1040 continue; 1041 1042 /* 1043 * Locate the IOAPIC that manages the ISA IRQ. 1044 */ 1045 ioapic = mp_find_ioapic(gsi); 1046 if (ioapic < 0) 1047 continue; 1048 pin = mp_find_ioapic_pin(ioapic, gsi); 1049 dstapic = mpc_ioapic_id(ioapic); 1050 1051 for (idx = 0; idx < mp_irq_entries; idx++) { 1052 struct mpc_intsrc *irq = mp_irqs + idx; 1053 1054 /* Do we already have a mapping for this ISA IRQ? */ 1055 if (irq->srcbus == MP_ISA_BUS && irq->srcbusirq == i) 1056 break; 1057 1058 /* Do we already have a mapping for this IOAPIC pin */ 1059 if (irq->dstapic == dstapic && irq->dstirq == pin) 1060 break; 1061 } 1062 1063 if (idx != mp_irq_entries) { 1064 printk(KERN_DEBUG "ACPI: IRQ%d used by override.\n", i); 1065 continue; /* IRQ already used */ 1066 } 1067 1068 mp_irq.type = MP_INTSRC; 1069 mp_irq.irqflag = 0; /* Conforming */ 1070 mp_irq.srcbus = MP_ISA_BUS; 1071 mp_irq.dstapic = dstapic; 1072 mp_irq.irqtype = mp_INT; 1073 mp_irq.srcbusirq = i; /* Identity mapped */ 1074 mp_irq.dstirq = pin; 1075 1076 mp_save_irq(&mp_irq); 1077 } 1078 } 1079 1080 static int mp_config_acpi_gsi(struct device *dev, u32 gsi, int trigger, 1081 int polarity) 1082 { 1083 #ifdef CONFIG_X86_MPPARSE 1084 struct mpc_intsrc mp_irq; 1085 struct pci_dev *pdev; 1086 unsigned char number; 1087 unsigned int devfn; 1088 int ioapic; 1089 u8 pin; 1090 1091 if (!acpi_ioapic) 1092 return 0; 1093 if (!dev) 1094 return 0; 1095 if (dev->bus != &pci_bus_type) 1096 return 0; 1097 1098 pdev = to_pci_dev(dev); 1099 number = pdev->bus->number; 1100 devfn = pdev->devfn; 1101 pin = pdev->pin; 1102 /* print the entry should happen on mptable identically */ 1103 mp_irq.type = MP_INTSRC; 1104 mp_irq.irqtype = mp_INT; 1105 mp_irq.irqflag = (trigger == ACPI_EDGE_SENSITIVE ? 4 : 0x0c) | 1106 (polarity == ACPI_ACTIVE_HIGH ? 1 : 3); 1107 mp_irq.srcbus = number; 1108 mp_irq.srcbusirq = (((devfn >> 3) & 0x1f) << 2) | ((pin - 1) & 3); 1109 ioapic = mp_find_ioapic(gsi); 1110 mp_irq.dstapic = mpc_ioapic_id(ioapic); 1111 mp_irq.dstirq = mp_find_ioapic_pin(ioapic, gsi); 1112 1113 mp_save_irq(&mp_irq); 1114 #endif 1115 return 0; 1116 } 1117 1118 int mp_register_gsi(struct device *dev, u32 gsi, int trigger, int polarity) 1119 { 1120 int ioapic; 1121 int ioapic_pin; 1122 struct io_apic_irq_attr irq_attr; 1123 1124 if (acpi_irq_model != ACPI_IRQ_MODEL_IOAPIC) 1125 return gsi; 1126 1127 /* Don't set up the ACPI SCI because it's already set up */ 1128 if (acpi_gbl_FADT.sci_interrupt == gsi) 1129 return gsi; 1130 1131 ioapic = mp_find_ioapic(gsi); 1132 if (ioapic < 0) { 1133 printk(KERN_WARNING "No IOAPIC for GSI %u\n", gsi); 1134 return gsi; 1135 } 1136 1137 ioapic_pin = mp_find_ioapic_pin(ioapic, gsi); 1138 1139 if (ioapic_pin > MP_MAX_IOAPIC_PIN) { 1140 printk(KERN_ERR "Invalid reference to IOAPIC pin " 1141 "%d-%d\n", mpc_ioapic_id(ioapic), 1142 ioapic_pin); 1143 return gsi; 1144 } 1145 1146 if (enable_update_mptable) 1147 mp_config_acpi_gsi(dev, gsi, trigger, polarity); 1148 1149 set_io_apic_irq_attr(&irq_attr, ioapic, ioapic_pin, 1150 trigger == ACPI_EDGE_SENSITIVE ? 0 : 1, 1151 polarity == ACPI_ACTIVE_HIGH ? 0 : 1); 1152 io_apic_set_pci_routing(dev, gsi_to_irq(gsi), &irq_attr); 1153 1154 return gsi; 1155 } 1156 1157 /* 1158 * Parse IOAPIC related entries in MADT 1159 * returns 0 on success, < 0 on error 1160 */ 1161 static int __init acpi_parse_madt_ioapic_entries(void) 1162 { 1163 int count; 1164 1165 /* 1166 * ACPI interpreter is required to complete interrupt setup, 1167 * so if it is off, don't enumerate the io-apics with ACPI. 1168 * If MPS is present, it will handle them, 1169 * otherwise the system will stay in PIC mode 1170 */ 1171 if (acpi_disabled || acpi_noirq) 1172 return -ENODEV; 1173 1174 if (!cpu_has_apic) 1175 return -ENODEV; 1176 1177 /* 1178 * if "noapic" boot option, don't look for IO-APICs 1179 */ 1180 if (skip_ioapic_setup) { 1181 printk(KERN_INFO PREFIX "Skipping IOAPIC probe " 1182 "due to 'noapic' option.\n"); 1183 return -ENODEV; 1184 } 1185 1186 count = 1187 acpi_table_parse_madt(ACPI_MADT_TYPE_IO_APIC, acpi_parse_ioapic, 1188 MAX_IO_APICS); 1189 if (!count) { 1190 printk(KERN_ERR PREFIX "No IOAPIC entries present\n"); 1191 return -ENODEV; 1192 } else if (count < 0) { 1193 printk(KERN_ERR PREFIX "Error parsing IOAPIC entry\n"); 1194 return count; 1195 } 1196 1197 count = 1198 acpi_table_parse_madt(ACPI_MADT_TYPE_INTERRUPT_OVERRIDE, acpi_parse_int_src_ovr, 1199 nr_irqs); 1200 if (count < 0) { 1201 printk(KERN_ERR PREFIX 1202 "Error parsing interrupt source overrides entry\n"); 1203 /* TBD: Cleanup to allow fallback to MPS */ 1204 return count; 1205 } 1206 1207 /* 1208 * If BIOS did not supply an INT_SRC_OVR for the SCI 1209 * pretend we got one so we can set the SCI flags. 1210 */ 1211 if (!acpi_sci_override_gsi) 1212 acpi_sci_ioapic_setup(acpi_gbl_FADT.sci_interrupt, 0, 0, 1213 acpi_gbl_FADT.sci_interrupt); 1214 1215 /* Fill in identity legacy mappings where no override */ 1216 mp_config_acpi_legacy_irqs(); 1217 1218 count = 1219 acpi_table_parse_madt(ACPI_MADT_TYPE_NMI_SOURCE, acpi_parse_nmi_src, 1220 nr_irqs); 1221 if (count < 0) { 1222 printk(KERN_ERR PREFIX "Error parsing NMI SRC entry\n"); 1223 /* TBD: Cleanup to allow fallback to MPS */ 1224 return count; 1225 } 1226 1227 return 0; 1228 } 1229 #else 1230 static inline int acpi_parse_madt_ioapic_entries(void) 1231 { 1232 return -1; 1233 } 1234 #endif /* !CONFIG_X86_IO_APIC */ 1235 1236 static void __init early_acpi_process_madt(void) 1237 { 1238 #ifdef CONFIG_X86_LOCAL_APIC 1239 int error; 1240 1241 if (!acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) { 1242 1243 /* 1244 * Parse MADT LAPIC entries 1245 */ 1246 error = early_acpi_parse_madt_lapic_addr_ovr(); 1247 if (!error) { 1248 acpi_lapic = 1; 1249 smp_found_config = 1; 1250 } 1251 if (error == -EINVAL) { 1252 /* 1253 * Dell Precision Workstation 410, 610 come here. 1254 */ 1255 printk(KERN_ERR PREFIX 1256 "Invalid BIOS MADT, disabling ACPI\n"); 1257 disable_acpi(); 1258 } 1259 } 1260 #endif 1261 } 1262 1263 static void __init acpi_process_madt(void) 1264 { 1265 #ifdef CONFIG_X86_LOCAL_APIC 1266 int error; 1267 1268 if (!acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) { 1269 1270 /* 1271 * Parse MADT LAPIC entries 1272 */ 1273 error = acpi_parse_madt_lapic_entries(); 1274 if (!error) { 1275 acpi_lapic = 1; 1276 1277 /* 1278 * Parse MADT IO-APIC entries 1279 */ 1280 error = acpi_parse_madt_ioapic_entries(); 1281 if (!error) { 1282 acpi_set_irq_model_ioapic(); 1283 1284 smp_found_config = 1; 1285 } 1286 } 1287 if (error == -EINVAL) { 1288 /* 1289 * Dell Precision Workstation 410, 610 come here. 1290 */ 1291 printk(KERN_ERR PREFIX 1292 "Invalid BIOS MADT, disabling ACPI\n"); 1293 disable_acpi(); 1294 } 1295 } else { 1296 /* 1297 * ACPI found no MADT, and so ACPI wants UP PIC mode. 1298 * In the event an MPS table was found, forget it. 1299 * Boot with "acpi=off" to use MPS on such a system. 1300 */ 1301 if (smp_found_config) { 1302 printk(KERN_WARNING PREFIX 1303 "No APIC-table, disabling MPS\n"); 1304 smp_found_config = 0; 1305 } 1306 } 1307 1308 /* 1309 * ACPI supports both logical (e.g. Hyper-Threading) and physical 1310 * processors, where MPS only supports physical. 1311 */ 1312 if (acpi_lapic && acpi_ioapic) 1313 printk(KERN_INFO "Using ACPI (MADT) for SMP configuration " 1314 "information\n"); 1315 else if (acpi_lapic) 1316 printk(KERN_INFO "Using ACPI for processor (LAPIC) " 1317 "configuration information\n"); 1318 #endif 1319 return; 1320 } 1321 1322 static int __init disable_acpi_irq(const struct dmi_system_id *d) 1323 { 1324 if (!acpi_force) { 1325 printk(KERN_NOTICE "%s detected: force use of acpi=noirq\n", 1326 d->ident); 1327 acpi_noirq_set(); 1328 } 1329 return 0; 1330 } 1331 1332 static int __init disable_acpi_pci(const struct dmi_system_id *d) 1333 { 1334 if (!acpi_force) { 1335 printk(KERN_NOTICE "%s detected: force use of pci=noacpi\n", 1336 d->ident); 1337 acpi_disable_pci(); 1338 } 1339 return 0; 1340 } 1341 1342 static int __init dmi_disable_acpi(const struct dmi_system_id *d) 1343 { 1344 if (!acpi_force) { 1345 printk(KERN_NOTICE "%s detected: acpi off\n", d->ident); 1346 disable_acpi(); 1347 } else { 1348 printk(KERN_NOTICE 1349 "Warning: DMI blacklist says broken, but acpi forced\n"); 1350 } 1351 return 0; 1352 } 1353 1354 /* 1355 * Force ignoring BIOS IRQ0 override 1356 */ 1357 static int __init dmi_ignore_irq0_timer_override(const struct dmi_system_id *d) 1358 { 1359 if (!acpi_skip_timer_override) { 1360 pr_notice("%s detected: Ignoring BIOS IRQ0 override\n", 1361 d->ident); 1362 acpi_skip_timer_override = 1; 1363 } 1364 return 0; 1365 } 1366 1367 /* 1368 * If your system is blacklisted here, but you find that acpi=force 1369 * works for you, please contact linux-acpi@vger.kernel.org 1370 */ 1371 static struct dmi_system_id __initdata acpi_dmi_table[] = { 1372 /* 1373 * Boxes that need ACPI disabled 1374 */ 1375 { 1376 .callback = dmi_disable_acpi, 1377 .ident = "IBM Thinkpad", 1378 .matches = { 1379 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), 1380 DMI_MATCH(DMI_BOARD_NAME, "2629H1G"), 1381 }, 1382 }, 1383 1384 /* 1385 * Boxes that need ACPI PCI IRQ routing disabled 1386 */ 1387 { 1388 .callback = disable_acpi_irq, 1389 .ident = "ASUS A7V", 1390 .matches = { 1391 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC"), 1392 DMI_MATCH(DMI_BOARD_NAME, "<A7V>"), 1393 /* newer BIOS, Revision 1011, does work */ 1394 DMI_MATCH(DMI_BIOS_VERSION, 1395 "ASUS A7V ACPI BIOS Revision 1007"), 1396 }, 1397 }, 1398 { 1399 /* 1400 * Latest BIOS for IBM 600E (1.16) has bad pcinum 1401 * for LPC bridge, which is needed for the PCI 1402 * interrupt links to work. DSDT fix is in bug 5966. 1403 * 2645, 2646 model numbers are shared with 600/600E/600X 1404 */ 1405 .callback = disable_acpi_irq, 1406 .ident = "IBM Thinkpad 600 Series 2645", 1407 .matches = { 1408 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), 1409 DMI_MATCH(DMI_BOARD_NAME, "2645"), 1410 }, 1411 }, 1412 { 1413 .callback = disable_acpi_irq, 1414 .ident = "IBM Thinkpad 600 Series 2646", 1415 .matches = { 1416 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), 1417 DMI_MATCH(DMI_BOARD_NAME, "2646"), 1418 }, 1419 }, 1420 /* 1421 * Boxes that need ACPI PCI IRQ routing and PCI scan disabled 1422 */ 1423 { /* _BBN 0 bug */ 1424 .callback = disable_acpi_pci, 1425 .ident = "ASUS PR-DLS", 1426 .matches = { 1427 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."), 1428 DMI_MATCH(DMI_BOARD_NAME, "PR-DLS"), 1429 DMI_MATCH(DMI_BIOS_VERSION, 1430 "ASUS PR-DLS ACPI BIOS Revision 1010"), 1431 DMI_MATCH(DMI_BIOS_DATE, "03/21/2003") 1432 }, 1433 }, 1434 { 1435 .callback = disable_acpi_pci, 1436 .ident = "Acer TravelMate 36x Laptop", 1437 .matches = { 1438 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 1439 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 360"), 1440 }, 1441 }, 1442 {} 1443 }; 1444 1445 /* second table for DMI checks that should run after early-quirks */ 1446 static struct dmi_system_id __initdata acpi_dmi_table_late[] = { 1447 /* 1448 * HP laptops which use a DSDT reporting as HP/SB400/10000, 1449 * which includes some code which overrides all temperature 1450 * trip points to 16C if the INTIN2 input of the I/O APIC 1451 * is enabled. This input is incorrectly designated the 1452 * ISA IRQ 0 via an interrupt source override even though 1453 * it is wired to the output of the master 8259A and INTIN0 1454 * is not connected at all. Force ignoring BIOS IRQ0 1455 * override in that cases. 1456 */ 1457 { 1458 .callback = dmi_ignore_irq0_timer_override, 1459 .ident = "HP nx6115 laptop", 1460 .matches = { 1461 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), 1462 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6115"), 1463 }, 1464 }, 1465 { 1466 .callback = dmi_ignore_irq0_timer_override, 1467 .ident = "HP NX6125 laptop", 1468 .matches = { 1469 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), 1470 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6125"), 1471 }, 1472 }, 1473 { 1474 .callback = dmi_ignore_irq0_timer_override, 1475 .ident = "HP NX6325 laptop", 1476 .matches = { 1477 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), 1478 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6325"), 1479 }, 1480 }, 1481 { 1482 .callback = dmi_ignore_irq0_timer_override, 1483 .ident = "HP 6715b laptop", 1484 .matches = { 1485 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), 1486 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq 6715b"), 1487 }, 1488 }, 1489 { 1490 .callback = dmi_ignore_irq0_timer_override, 1491 .ident = "FUJITSU SIEMENS", 1492 .matches = { 1493 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"), 1494 DMI_MATCH(DMI_PRODUCT_NAME, "AMILO PRO V2030"), 1495 }, 1496 }, 1497 {} 1498 }; 1499 1500 /* 1501 * acpi_boot_table_init() and acpi_boot_init() 1502 * called from setup_arch(), always. 1503 * 1. checksums all tables 1504 * 2. enumerates lapics 1505 * 3. enumerates io-apics 1506 * 1507 * acpi_table_init() is separate to allow reading SRAT without 1508 * other side effects. 1509 * 1510 * side effects of acpi_boot_init: 1511 * acpi_lapic = 1 if LAPIC found 1512 * acpi_ioapic = 1 if IOAPIC found 1513 * if (acpi_lapic && acpi_ioapic) smp_found_config = 1; 1514 * if acpi_blacklisted() acpi_disabled = 1; 1515 * acpi_irq_model=... 1516 * ... 1517 */ 1518 1519 void __init acpi_boot_table_init(void) 1520 { 1521 dmi_check_system(acpi_dmi_table); 1522 1523 /* 1524 * If acpi_disabled, bail out 1525 */ 1526 if (acpi_disabled) 1527 return; 1528 1529 /* 1530 * Initialize the ACPI boot-time table parser. 1531 */ 1532 if (acpi_table_init()) { 1533 disable_acpi(); 1534 return; 1535 } 1536 1537 acpi_table_parse(ACPI_SIG_BOOT, acpi_parse_sbf); 1538 1539 /* 1540 * blacklist may disable ACPI entirely 1541 */ 1542 if (acpi_blacklisted()) { 1543 if (acpi_force) { 1544 printk(KERN_WARNING PREFIX "acpi=force override\n"); 1545 } else { 1546 printk(KERN_WARNING PREFIX "Disabling ACPI support\n"); 1547 disable_acpi(); 1548 return; 1549 } 1550 } 1551 } 1552 1553 int __init early_acpi_boot_init(void) 1554 { 1555 /* 1556 * If acpi_disabled, bail out 1557 */ 1558 if (acpi_disabled) 1559 return 1; 1560 1561 /* 1562 * Process the Multiple APIC Description Table (MADT), if present 1563 */ 1564 early_acpi_process_madt(); 1565 1566 return 0; 1567 } 1568 1569 int __init acpi_boot_init(void) 1570 { 1571 /* those are executed after early-quirks are executed */ 1572 dmi_check_system(acpi_dmi_table_late); 1573 1574 /* 1575 * If acpi_disabled, bail out 1576 */ 1577 if (acpi_disabled) 1578 return 1; 1579 1580 acpi_table_parse(ACPI_SIG_BOOT, acpi_parse_sbf); 1581 1582 /* 1583 * set sci_int and PM timer address 1584 */ 1585 acpi_table_parse(ACPI_SIG_FADT, acpi_parse_fadt); 1586 1587 /* 1588 * Process the Multiple APIC Description Table (MADT), if present 1589 */ 1590 acpi_process_madt(); 1591 1592 acpi_table_parse(ACPI_SIG_HPET, acpi_parse_hpet); 1593 1594 if (!acpi_noirq) 1595 x86_init.pci.init = pci_acpi_init; 1596 1597 return 0; 1598 } 1599 1600 static int __init parse_acpi(char *arg) 1601 { 1602 if (!arg) 1603 return -EINVAL; 1604 1605 /* "acpi=off" disables both ACPI table parsing and interpreter */ 1606 if (strcmp(arg, "off") == 0) { 1607 disable_acpi(); 1608 } 1609 /* acpi=force to over-ride black-list */ 1610 else if (strcmp(arg, "force") == 0) { 1611 acpi_force = 1; 1612 acpi_disabled = 0; 1613 } 1614 /* acpi=strict disables out-of-spec workarounds */ 1615 else if (strcmp(arg, "strict") == 0) { 1616 acpi_strict = 1; 1617 } 1618 /* acpi=rsdt use RSDT instead of XSDT */ 1619 else if (strcmp(arg, "rsdt") == 0) { 1620 acpi_rsdt_forced = 1; 1621 } 1622 /* "acpi=noirq" disables ACPI interrupt routing */ 1623 else if (strcmp(arg, "noirq") == 0) { 1624 acpi_noirq_set(); 1625 } 1626 /* "acpi=copy_dsdt" copys DSDT */ 1627 else if (strcmp(arg, "copy_dsdt") == 0) { 1628 acpi_gbl_copy_dsdt_locally = 1; 1629 } else { 1630 /* Core will printk when we return error. */ 1631 return -EINVAL; 1632 } 1633 return 0; 1634 } 1635 early_param("acpi", parse_acpi); 1636 1637 /* FIXME: Using pci= for an ACPI parameter is a travesty. */ 1638 static int __init parse_pci(char *arg) 1639 { 1640 if (arg && strcmp(arg, "noacpi") == 0) 1641 acpi_disable_pci(); 1642 return 0; 1643 } 1644 early_param("pci", parse_pci); 1645 1646 int __init acpi_mps_check(void) 1647 { 1648 #if defined(CONFIG_X86_LOCAL_APIC) && !defined(CONFIG_X86_MPPARSE) 1649 /* mptable code is not built-in*/ 1650 if (acpi_disabled || acpi_noirq) { 1651 printk(KERN_WARNING "MPS support code is not built-in.\n" 1652 "Using acpi=off or acpi=noirq or pci=noacpi " 1653 "may have problem\n"); 1654 return 1; 1655 } 1656 #endif 1657 return 0; 1658 } 1659 1660 #ifdef CONFIG_X86_IO_APIC 1661 static int __init parse_acpi_skip_timer_override(char *arg) 1662 { 1663 acpi_skip_timer_override = 1; 1664 return 0; 1665 } 1666 early_param("acpi_skip_timer_override", parse_acpi_skip_timer_override); 1667 1668 static int __init parse_acpi_use_timer_override(char *arg) 1669 { 1670 acpi_use_timer_override = 1; 1671 return 0; 1672 } 1673 early_param("acpi_use_timer_override", parse_acpi_use_timer_override); 1674 #endif /* CONFIG_X86_IO_APIC */ 1675 1676 static int __init setup_acpi_sci(char *s) 1677 { 1678 if (!s) 1679 return -EINVAL; 1680 if (!strcmp(s, "edge")) 1681 acpi_sci_flags = ACPI_MADT_TRIGGER_EDGE | 1682 (acpi_sci_flags & ~ACPI_MADT_TRIGGER_MASK); 1683 else if (!strcmp(s, "level")) 1684 acpi_sci_flags = ACPI_MADT_TRIGGER_LEVEL | 1685 (acpi_sci_flags & ~ACPI_MADT_TRIGGER_MASK); 1686 else if (!strcmp(s, "high")) 1687 acpi_sci_flags = ACPI_MADT_POLARITY_ACTIVE_HIGH | 1688 (acpi_sci_flags & ~ACPI_MADT_POLARITY_MASK); 1689 else if (!strcmp(s, "low")) 1690 acpi_sci_flags = ACPI_MADT_POLARITY_ACTIVE_LOW | 1691 (acpi_sci_flags & ~ACPI_MADT_POLARITY_MASK); 1692 else 1693 return -EINVAL; 1694 return 0; 1695 } 1696 early_param("acpi_sci", setup_acpi_sci); 1697 1698 int __acpi_acquire_global_lock(unsigned int *lock) 1699 { 1700 unsigned int old, new, val; 1701 do { 1702 old = *lock; 1703 new = (((old & ~0x3) + 2) + ((old >> 1) & 0x1)); 1704 val = cmpxchg(lock, old, new); 1705 } while (unlikely (val != old)); 1706 return (new < 3) ? -1 : 0; 1707 } 1708 1709 int __acpi_release_global_lock(unsigned int *lock) 1710 { 1711 unsigned int old, new, val; 1712 do { 1713 old = *lock; 1714 new = old & ~0x3; 1715 val = cmpxchg(lock, old, new); 1716 } while (unlikely (val != old)); 1717 return old & 0x1; 1718 } 1719 1720 void __init arch_reserve_mem_area(acpi_physical_address addr, size_t size) 1721 { 1722 e820_add_region(addr, size, E820_ACPI); 1723 update_e820(); 1724 } 1725