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 int acpi_disable_cmcff; 71 72 u8 acpi_sci_flags __initdata; 73 int acpi_sci_override_gsi __initdata; 74 int acpi_skip_timer_override __initdata; 75 int acpi_use_timer_override __initdata; 76 int acpi_fix_pin2_polarity __initdata; 77 78 #ifdef CONFIG_X86_LOCAL_APIC 79 static u64 acpi_lapic_addr __initdata = APIC_DEFAULT_PHYS_BASE; 80 #endif 81 82 #ifndef __HAVE_ARCH_CMPXCHG 83 #warning ACPI uses CMPXCHG, i486 and later hardware 84 #endif 85 86 /* -------------------------------------------------------------------------- 87 Boot-time Configuration 88 -------------------------------------------------------------------------- */ 89 90 /* 91 * The default interrupt routing model is PIC (8259). This gets 92 * overridden if IOAPICs are enumerated (below). 93 */ 94 enum acpi_irq_model_id acpi_irq_model = ACPI_IRQ_MODEL_PIC; 95 96 97 /* 98 * ISA irqs by default are the first 16 gsis but can be 99 * any gsi as specified by an interrupt source override. 100 */ 101 static u32 isa_irq_to_gsi[NR_IRQS_LEGACY] __read_mostly = { 102 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 103 }; 104 105 static unsigned int gsi_to_irq(unsigned int gsi) 106 { 107 unsigned int irq = gsi + NR_IRQS_LEGACY; 108 unsigned int i; 109 110 for (i = 0; i < NR_IRQS_LEGACY; i++) { 111 if (isa_irq_to_gsi[i] == gsi) { 112 return i; 113 } 114 } 115 116 /* Provide an identity mapping of gsi == irq 117 * except on truly weird platforms that have 118 * non isa irqs in the first 16 gsis. 119 */ 120 if (gsi >= NR_IRQS_LEGACY) 121 irq = gsi; 122 else 123 irq = gsi_top + gsi; 124 125 return irq; 126 } 127 128 static u32 irq_to_gsi(int irq) 129 { 130 unsigned int gsi; 131 132 if (irq < NR_IRQS_LEGACY) 133 gsi = isa_irq_to_gsi[irq]; 134 else if (irq < gsi_top) 135 gsi = irq; 136 else if (irq < (gsi_top + NR_IRQS_LEGACY)) 137 gsi = irq - gsi_top; 138 else 139 gsi = 0xffffffff; 140 141 return gsi; 142 } 143 144 /* 145 * This is just a simple wrapper around early_ioremap(), 146 * with sanity checks for phys == 0 and size == 0. 147 */ 148 char *__init __acpi_map_table(unsigned long phys, unsigned long size) 149 { 150 151 if (!phys || !size) 152 return NULL; 153 154 return early_ioremap(phys, size); 155 } 156 157 void __init __acpi_unmap_table(char *map, unsigned long size) 158 { 159 if (!map || !size) 160 return; 161 162 early_iounmap(map, size); 163 } 164 165 #ifdef CONFIG_X86_LOCAL_APIC 166 static int __init acpi_parse_madt(struct acpi_table_header *table) 167 { 168 struct acpi_table_madt *madt = NULL; 169 170 if (!cpu_has_apic) 171 return -EINVAL; 172 173 madt = (struct acpi_table_madt *)table; 174 if (!madt) { 175 printk(KERN_WARNING PREFIX "Unable to map MADT\n"); 176 return -ENODEV; 177 } 178 179 if (madt->address) { 180 acpi_lapic_addr = (u64) madt->address; 181 182 printk(KERN_DEBUG PREFIX "Local APIC address 0x%08x\n", 183 madt->address); 184 } 185 186 default_acpi_madt_oem_check(madt->header.oem_id, 187 madt->header.oem_table_id); 188 189 return 0; 190 } 191 192 static void acpi_register_lapic(int id, u8 enabled) 193 { 194 unsigned int ver = 0; 195 196 if (id >= MAX_LOCAL_APIC) { 197 printk(KERN_INFO PREFIX "skipped apicid that is too big\n"); 198 return; 199 } 200 201 if (!enabled) { 202 ++disabled_cpus; 203 return; 204 } 205 206 if (boot_cpu_physical_apicid != -1U) 207 ver = apic_version[boot_cpu_physical_apicid]; 208 209 generic_processor_info(id, ver); 210 } 211 212 static int __init 213 acpi_parse_x2apic(struct acpi_subtable_header *header, const unsigned long end) 214 { 215 struct acpi_madt_local_x2apic *processor = NULL; 216 int apic_id; 217 u8 enabled; 218 219 processor = (struct acpi_madt_local_x2apic *)header; 220 221 if (BAD_MADT_ENTRY(processor, end)) 222 return -EINVAL; 223 224 acpi_table_print_madt_entry(header); 225 226 apic_id = processor->local_apic_id; 227 enabled = processor->lapic_flags & ACPI_MADT_ENABLED; 228 #ifdef CONFIG_X86_X2APIC 229 /* 230 * We need to register disabled CPU as well to permit 231 * counting disabled CPUs. This allows us to size 232 * cpus_possible_map more accurately, to permit 233 * to not preallocating memory for all NR_CPUS 234 * when we use CPU hotplug. 235 */ 236 if (!apic->apic_id_valid(apic_id) && enabled) 237 printk(KERN_WARNING PREFIX "x2apic entry ignored\n"); 238 else 239 acpi_register_lapic(apic_id, enabled); 240 #else 241 printk(KERN_WARNING PREFIX "x2apic entry ignored\n"); 242 #endif 243 244 return 0; 245 } 246 247 static int __init 248 acpi_parse_lapic(struct acpi_subtable_header * header, const unsigned long end) 249 { 250 struct acpi_madt_local_apic *processor = NULL; 251 252 processor = (struct acpi_madt_local_apic *)header; 253 254 if (BAD_MADT_ENTRY(processor, end)) 255 return -EINVAL; 256 257 acpi_table_print_madt_entry(header); 258 259 /* 260 * We need to register disabled CPU as well to permit 261 * counting disabled CPUs. This allows us to size 262 * cpus_possible_map more accurately, to permit 263 * to not preallocating memory for all NR_CPUS 264 * when we use CPU hotplug. 265 */ 266 acpi_register_lapic(processor->id, /* APIC ID */ 267 processor->lapic_flags & ACPI_MADT_ENABLED); 268 269 return 0; 270 } 271 272 static int __init 273 acpi_parse_sapic(struct acpi_subtable_header *header, const unsigned long end) 274 { 275 struct acpi_madt_local_sapic *processor = NULL; 276 277 processor = (struct acpi_madt_local_sapic *)header; 278 279 if (BAD_MADT_ENTRY(processor, end)) 280 return -EINVAL; 281 282 acpi_table_print_madt_entry(header); 283 284 acpi_register_lapic((processor->id << 8) | processor->eid,/* APIC ID */ 285 processor->lapic_flags & ACPI_MADT_ENABLED); 286 287 return 0; 288 } 289 290 static int __init 291 acpi_parse_lapic_addr_ovr(struct acpi_subtable_header * header, 292 const unsigned long end) 293 { 294 struct acpi_madt_local_apic_override *lapic_addr_ovr = NULL; 295 296 lapic_addr_ovr = (struct acpi_madt_local_apic_override *)header; 297 298 if (BAD_MADT_ENTRY(lapic_addr_ovr, end)) 299 return -EINVAL; 300 301 acpi_lapic_addr = lapic_addr_ovr->address; 302 303 return 0; 304 } 305 306 static int __init 307 acpi_parse_x2apic_nmi(struct acpi_subtable_header *header, 308 const unsigned long end) 309 { 310 struct acpi_madt_local_x2apic_nmi *x2apic_nmi = NULL; 311 312 x2apic_nmi = (struct acpi_madt_local_x2apic_nmi *)header; 313 314 if (BAD_MADT_ENTRY(x2apic_nmi, end)) 315 return -EINVAL; 316 317 acpi_table_print_madt_entry(header); 318 319 if (x2apic_nmi->lint != 1) 320 printk(KERN_WARNING PREFIX "NMI not connected to LINT 1!\n"); 321 322 return 0; 323 } 324 325 static int __init 326 acpi_parse_lapic_nmi(struct acpi_subtable_header * header, const unsigned long end) 327 { 328 struct acpi_madt_local_apic_nmi *lapic_nmi = NULL; 329 330 lapic_nmi = (struct acpi_madt_local_apic_nmi *)header; 331 332 if (BAD_MADT_ENTRY(lapic_nmi, end)) 333 return -EINVAL; 334 335 acpi_table_print_madt_entry(header); 336 337 if (lapic_nmi->lint != 1) 338 printk(KERN_WARNING PREFIX "NMI not connected to LINT 1!\n"); 339 340 return 0; 341 } 342 343 #endif /*CONFIG_X86_LOCAL_APIC */ 344 345 #ifdef CONFIG_X86_IO_APIC 346 347 static int __init 348 acpi_parse_ioapic(struct acpi_subtable_header * header, const unsigned long end) 349 { 350 struct acpi_madt_io_apic *ioapic = NULL; 351 352 ioapic = (struct acpi_madt_io_apic *)header; 353 354 if (BAD_MADT_ENTRY(ioapic, end)) 355 return -EINVAL; 356 357 acpi_table_print_madt_entry(header); 358 359 mp_register_ioapic(ioapic->id, 360 ioapic->address, ioapic->global_irq_base); 361 362 return 0; 363 } 364 365 /* 366 * Parse Interrupt Source Override for the ACPI SCI 367 */ 368 static void __init acpi_sci_ioapic_setup(u8 bus_irq, u16 polarity, u16 trigger, u32 gsi) 369 { 370 if (trigger == 0) /* compatible SCI trigger is level */ 371 trigger = 3; 372 373 if (polarity == 0) /* compatible SCI polarity is low */ 374 polarity = 3; 375 376 /* Command-line over-ride via acpi_sci= */ 377 if (acpi_sci_flags & ACPI_MADT_TRIGGER_MASK) 378 trigger = (acpi_sci_flags & ACPI_MADT_TRIGGER_MASK) >> 2; 379 380 if (acpi_sci_flags & ACPI_MADT_POLARITY_MASK) 381 polarity = acpi_sci_flags & ACPI_MADT_POLARITY_MASK; 382 383 /* 384 * mp_config_acpi_legacy_irqs() already setup IRQs < 16 385 * If GSI is < 16, this will update its flags, 386 * else it will create a new mp_irqs[] entry. 387 */ 388 mp_override_legacy_irq(bus_irq, polarity, trigger, gsi); 389 390 /* 391 * stash over-ride to indicate we've been here 392 * and for later update of acpi_gbl_FADT 393 */ 394 acpi_sci_override_gsi = gsi; 395 return; 396 } 397 398 static int __init 399 acpi_parse_int_src_ovr(struct acpi_subtable_header * header, 400 const unsigned long end) 401 { 402 struct acpi_madt_interrupt_override *intsrc = NULL; 403 404 intsrc = (struct acpi_madt_interrupt_override *)header; 405 406 if (BAD_MADT_ENTRY(intsrc, end)) 407 return -EINVAL; 408 409 acpi_table_print_madt_entry(header); 410 411 if (intsrc->source_irq == acpi_gbl_FADT.sci_interrupt) { 412 acpi_sci_ioapic_setup(intsrc->source_irq, 413 intsrc->inti_flags & ACPI_MADT_POLARITY_MASK, 414 (intsrc->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2, 415 intsrc->global_irq); 416 return 0; 417 } 418 419 if (intsrc->source_irq == 0) { 420 if (acpi_skip_timer_override) { 421 printk(PREFIX "BIOS IRQ0 override ignored.\n"); 422 return 0; 423 } 424 425 if ((intsrc->global_irq == 2) && acpi_fix_pin2_polarity 426 && (intsrc->inti_flags & ACPI_MADT_POLARITY_MASK)) { 427 intsrc->inti_flags &= ~ACPI_MADT_POLARITY_MASK; 428 printk(PREFIX "BIOS IRQ0 pin2 override: forcing polarity to high active.\n"); 429 } 430 } 431 432 mp_override_legacy_irq(intsrc->source_irq, 433 intsrc->inti_flags & ACPI_MADT_POLARITY_MASK, 434 (intsrc->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2, 435 intsrc->global_irq); 436 437 return 0; 438 } 439 440 static int __init 441 acpi_parse_nmi_src(struct acpi_subtable_header * header, const unsigned long end) 442 { 443 struct acpi_madt_nmi_source *nmi_src = NULL; 444 445 nmi_src = (struct acpi_madt_nmi_source *)header; 446 447 if (BAD_MADT_ENTRY(nmi_src, end)) 448 return -EINVAL; 449 450 acpi_table_print_madt_entry(header); 451 452 /* TBD: Support nimsrc entries? */ 453 454 return 0; 455 } 456 457 #endif /* CONFIG_X86_IO_APIC */ 458 459 /* 460 * acpi_pic_sci_set_trigger() 461 * 462 * use ELCR to set PIC-mode trigger type for SCI 463 * 464 * If a PIC-mode SCI is not recognized or gives spurious IRQ7's 465 * it may require Edge Trigger -- use "acpi_sci=edge" 466 * 467 * Port 0x4d0-4d1 are ECLR1 and ECLR2, the Edge/Level Control Registers 468 * for the 8259 PIC. bit[n] = 1 means irq[n] is Level, otherwise Edge. 469 * ECLR1 is IRQs 0-7 (IRQ 0, 1, 2 must be 0) 470 * ECLR2 is IRQs 8-15 (IRQ 8, 13 must be 0) 471 */ 472 473 void __init acpi_pic_sci_set_trigger(unsigned int irq, u16 trigger) 474 { 475 unsigned int mask = 1 << irq; 476 unsigned int old, new; 477 478 /* Real old ELCR mask */ 479 old = inb(0x4d0) | (inb(0x4d1) << 8); 480 481 /* 482 * If we use ACPI to set PCI IRQs, then we should clear ELCR 483 * since we will set it correctly as we enable the PCI irq 484 * routing. 485 */ 486 new = acpi_noirq ? old : 0; 487 488 /* 489 * Update SCI information in the ELCR, it isn't in the PCI 490 * routing tables.. 491 */ 492 switch (trigger) { 493 case 1: /* Edge - clear */ 494 new &= ~mask; 495 break; 496 case 3: /* Level - set */ 497 new |= mask; 498 break; 499 } 500 501 if (old == new) 502 return; 503 504 printk(PREFIX "setting ELCR to %04x (from %04x)\n", new, old); 505 outb(new, 0x4d0); 506 outb(new >> 8, 0x4d1); 507 } 508 509 int acpi_gsi_to_irq(u32 gsi, unsigned int *irq) 510 { 511 *irq = gsi_to_irq(gsi); 512 513 #ifdef CONFIG_X86_IO_APIC 514 if (acpi_irq_model == ACPI_IRQ_MODEL_IOAPIC) 515 setup_IO_APIC_irq_extra(gsi); 516 #endif 517 518 return 0; 519 } 520 EXPORT_SYMBOL_GPL(acpi_gsi_to_irq); 521 522 int acpi_isa_irq_to_gsi(unsigned isa_irq, u32 *gsi) 523 { 524 if (isa_irq >= 16) 525 return -1; 526 *gsi = irq_to_gsi(isa_irq); 527 return 0; 528 } 529 530 static int acpi_register_gsi_pic(struct device *dev, u32 gsi, 531 int trigger, int polarity) 532 { 533 #ifdef CONFIG_PCI 534 /* 535 * Make sure all (legacy) PCI IRQs are set as level-triggered. 536 */ 537 if (trigger == ACPI_LEVEL_SENSITIVE) 538 eisa_set_level_irq(gsi); 539 #endif 540 541 return gsi; 542 } 543 544 static int acpi_register_gsi_ioapic(struct device *dev, u32 gsi, 545 int trigger, int polarity) 546 { 547 #ifdef CONFIG_X86_IO_APIC 548 gsi = mp_register_gsi(dev, gsi, trigger, polarity); 549 #endif 550 551 return gsi; 552 } 553 554 int (*__acpi_register_gsi)(struct device *dev, u32 gsi, 555 int trigger, int polarity) = acpi_register_gsi_pic; 556 557 #ifdef CONFIG_ACPI_SLEEP 558 int (*acpi_suspend_lowlevel)(void) = x86_acpi_suspend_lowlevel; 559 #else 560 int (*acpi_suspend_lowlevel)(void); 561 #endif 562 563 /* 564 * success: return IRQ number (>=0) 565 * failure: return < 0 566 */ 567 int acpi_register_gsi(struct device *dev, u32 gsi, int trigger, int polarity) 568 { 569 unsigned int irq; 570 unsigned int plat_gsi = gsi; 571 572 plat_gsi = (*__acpi_register_gsi)(dev, gsi, trigger, polarity); 573 irq = gsi_to_irq(plat_gsi); 574 575 return irq; 576 } 577 EXPORT_SYMBOL_GPL(acpi_register_gsi); 578 579 void acpi_unregister_gsi(u32 gsi) 580 { 581 } 582 EXPORT_SYMBOL_GPL(acpi_unregister_gsi); 583 584 void __init acpi_set_irq_model_pic(void) 585 { 586 acpi_irq_model = ACPI_IRQ_MODEL_PIC; 587 __acpi_register_gsi = acpi_register_gsi_pic; 588 acpi_ioapic = 0; 589 } 590 591 void __init acpi_set_irq_model_ioapic(void) 592 { 593 acpi_irq_model = ACPI_IRQ_MODEL_IOAPIC; 594 __acpi_register_gsi = acpi_register_gsi_ioapic; 595 acpi_ioapic = 1; 596 } 597 598 /* 599 * ACPI based hotplug support for CPU 600 */ 601 #ifdef CONFIG_ACPI_HOTPLUG_CPU 602 #include <acpi/processor.h> 603 604 static void acpi_map_cpu2node(acpi_handle handle, int cpu, int physid) 605 { 606 #ifdef CONFIG_ACPI_NUMA 607 int nid; 608 609 nid = acpi_get_node(handle); 610 if (nid == -1 || !node_online(nid)) 611 return; 612 set_apicid_to_node(physid, nid); 613 numa_set_node(cpu, nid); 614 #endif 615 } 616 617 static int _acpi_map_lsapic(acpi_handle handle, int *pcpu) 618 { 619 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; 620 union acpi_object *obj; 621 struct acpi_madt_local_apic *lapic; 622 cpumask_var_t tmp_map, new_map; 623 u8 physid; 624 int cpu; 625 int retval = -ENOMEM; 626 627 if (ACPI_FAILURE(acpi_evaluate_object(handle, "_MAT", NULL, &buffer))) 628 return -EINVAL; 629 630 if (!buffer.length || !buffer.pointer) 631 return -EINVAL; 632 633 obj = buffer.pointer; 634 if (obj->type != ACPI_TYPE_BUFFER || 635 obj->buffer.length < sizeof(*lapic)) { 636 kfree(buffer.pointer); 637 return -EINVAL; 638 } 639 640 lapic = (struct acpi_madt_local_apic *)obj->buffer.pointer; 641 642 if (lapic->header.type != ACPI_MADT_TYPE_LOCAL_APIC || 643 !(lapic->lapic_flags & ACPI_MADT_ENABLED)) { 644 kfree(buffer.pointer); 645 return -EINVAL; 646 } 647 648 physid = lapic->id; 649 650 kfree(buffer.pointer); 651 buffer.length = ACPI_ALLOCATE_BUFFER; 652 buffer.pointer = NULL; 653 lapic = NULL; 654 655 if (!alloc_cpumask_var(&tmp_map, GFP_KERNEL)) 656 goto out; 657 658 if (!alloc_cpumask_var(&new_map, GFP_KERNEL)) 659 goto free_tmp_map; 660 661 cpumask_copy(tmp_map, cpu_present_mask); 662 acpi_register_lapic(physid, ACPI_MADT_ENABLED); 663 664 /* 665 * If acpi_register_lapic successfully generates a new logical cpu 666 * number, then the following will get us exactly what was mapped 667 */ 668 cpumask_andnot(new_map, cpu_present_mask, tmp_map); 669 if (cpumask_empty(new_map)) { 670 printk ("Unable to map lapic to logical cpu number\n"); 671 retval = -EINVAL; 672 goto free_new_map; 673 } 674 675 acpi_processor_set_pdc(handle); 676 677 cpu = cpumask_first(new_map); 678 acpi_map_cpu2node(handle, cpu, physid); 679 680 *pcpu = cpu; 681 retval = 0; 682 683 free_new_map: 684 free_cpumask_var(new_map); 685 free_tmp_map: 686 free_cpumask_var(tmp_map); 687 out: 688 return retval; 689 } 690 691 /* wrapper to silence section mismatch warning */ 692 int __ref acpi_map_lsapic(acpi_handle handle, int *pcpu) 693 { 694 return _acpi_map_lsapic(handle, pcpu); 695 } 696 EXPORT_SYMBOL(acpi_map_lsapic); 697 698 int acpi_unmap_lsapic(int cpu) 699 { 700 #ifdef CONFIG_ACPI_NUMA 701 set_apicid_to_node(per_cpu(x86_cpu_to_apicid, cpu), NUMA_NO_NODE); 702 #endif 703 704 per_cpu(x86_cpu_to_apicid, cpu) = -1; 705 set_cpu_present(cpu, false); 706 num_processors--; 707 708 return (0); 709 } 710 711 EXPORT_SYMBOL(acpi_unmap_lsapic); 712 #endif /* CONFIG_ACPI_HOTPLUG_CPU */ 713 714 int acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base) 715 { 716 /* TBD */ 717 return -EINVAL; 718 } 719 720 EXPORT_SYMBOL(acpi_register_ioapic); 721 722 int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base) 723 { 724 /* TBD */ 725 return -EINVAL; 726 } 727 728 EXPORT_SYMBOL(acpi_unregister_ioapic); 729 730 static int __init acpi_parse_sbf(struct acpi_table_header *table) 731 { 732 struct acpi_table_boot *sb; 733 734 sb = (struct acpi_table_boot *)table; 735 if (!sb) { 736 printk(KERN_WARNING PREFIX "Unable to map SBF\n"); 737 return -ENODEV; 738 } 739 740 sbf_port = sb->cmos_index; /* Save CMOS port */ 741 742 return 0; 743 } 744 745 #ifdef CONFIG_HPET_TIMER 746 #include <asm/hpet.h> 747 748 static struct __initdata resource *hpet_res; 749 750 static int __init acpi_parse_hpet(struct acpi_table_header *table) 751 { 752 struct acpi_table_hpet *hpet_tbl; 753 754 hpet_tbl = (struct acpi_table_hpet *)table; 755 if (!hpet_tbl) { 756 printk(KERN_WARNING PREFIX "Unable to map HPET\n"); 757 return -ENODEV; 758 } 759 760 if (hpet_tbl->address.space_id != ACPI_SPACE_MEM) { 761 printk(KERN_WARNING PREFIX "HPET timers must be located in " 762 "memory.\n"); 763 return -1; 764 } 765 766 hpet_address = hpet_tbl->address.address; 767 hpet_blockid = hpet_tbl->sequence; 768 769 /* 770 * Some broken BIOSes advertise HPET at 0x0. We really do not 771 * want to allocate a resource there. 772 */ 773 if (!hpet_address) { 774 printk(KERN_WARNING PREFIX 775 "HPET id: %#x base: %#lx is invalid\n", 776 hpet_tbl->id, hpet_address); 777 return 0; 778 } 779 #ifdef CONFIG_X86_64 780 /* 781 * Some even more broken BIOSes advertise HPET at 782 * 0xfed0000000000000 instead of 0xfed00000. Fix it up and add 783 * some noise: 784 */ 785 if (hpet_address == 0xfed0000000000000UL) { 786 if (!hpet_force_user) { 787 printk(KERN_WARNING PREFIX "HPET id: %#x " 788 "base: 0xfed0000000000000 is bogus\n " 789 "try hpet=force on the kernel command line to " 790 "fix it up to 0xfed00000.\n", hpet_tbl->id); 791 hpet_address = 0; 792 return 0; 793 } 794 printk(KERN_WARNING PREFIX 795 "HPET id: %#x base: 0xfed0000000000000 fixed up " 796 "to 0xfed00000.\n", hpet_tbl->id); 797 hpet_address >>= 32; 798 } 799 #endif 800 printk(KERN_INFO PREFIX "HPET id: %#x base: %#lx\n", 801 hpet_tbl->id, hpet_address); 802 803 /* 804 * Allocate and initialize the HPET firmware resource for adding into 805 * the resource tree during the lateinit timeframe. 806 */ 807 #define HPET_RESOURCE_NAME_SIZE 9 808 hpet_res = alloc_bootmem(sizeof(*hpet_res) + HPET_RESOURCE_NAME_SIZE); 809 810 hpet_res->name = (void *)&hpet_res[1]; 811 hpet_res->flags = IORESOURCE_MEM; 812 snprintf((char *)hpet_res->name, HPET_RESOURCE_NAME_SIZE, "HPET %u", 813 hpet_tbl->sequence); 814 815 hpet_res->start = hpet_address; 816 hpet_res->end = hpet_address + (1 * 1024) - 1; 817 818 return 0; 819 } 820 821 /* 822 * hpet_insert_resource inserts the HPET resources used into the resource 823 * tree. 824 */ 825 static __init int hpet_insert_resource(void) 826 { 827 if (!hpet_res) 828 return 1; 829 830 return insert_resource(&iomem_resource, hpet_res); 831 } 832 833 late_initcall(hpet_insert_resource); 834 835 #else 836 #define acpi_parse_hpet NULL 837 #endif 838 839 static int __init acpi_parse_fadt(struct acpi_table_header *table) 840 { 841 842 #ifdef CONFIG_X86_PM_TIMER 843 /* detect the location of the ACPI PM Timer */ 844 if (acpi_gbl_FADT.header.revision >= FADT2_REVISION_ID) { 845 /* FADT rev. 2 */ 846 if (acpi_gbl_FADT.xpm_timer_block.space_id != 847 ACPI_ADR_SPACE_SYSTEM_IO) 848 return 0; 849 850 pmtmr_ioport = acpi_gbl_FADT.xpm_timer_block.address; 851 /* 852 * "X" fields are optional extensions to the original V1.0 853 * fields, so we must selectively expand V1.0 fields if the 854 * corresponding X field is zero. 855 */ 856 if (!pmtmr_ioport) 857 pmtmr_ioport = acpi_gbl_FADT.pm_timer_block; 858 } else { 859 /* FADT rev. 1 */ 860 pmtmr_ioport = acpi_gbl_FADT.pm_timer_block; 861 } 862 if (pmtmr_ioport) 863 printk(KERN_INFO PREFIX "PM-Timer IO Port: %#x\n", 864 pmtmr_ioport); 865 #endif 866 return 0; 867 } 868 869 #ifdef CONFIG_X86_LOCAL_APIC 870 /* 871 * Parse LAPIC entries in MADT 872 * returns 0 on success, < 0 on error 873 */ 874 875 static int __init early_acpi_parse_madt_lapic_addr_ovr(void) 876 { 877 int count; 878 879 if (!cpu_has_apic) 880 return -ENODEV; 881 882 /* 883 * Note that the LAPIC address is obtained from the MADT (32-bit value) 884 * and (optionally) overriden by a LAPIC_ADDR_OVR entry (64-bit value). 885 */ 886 887 count = 888 acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE, 889 acpi_parse_lapic_addr_ovr, 0); 890 if (count < 0) { 891 printk(KERN_ERR PREFIX 892 "Error parsing LAPIC address override entry\n"); 893 return count; 894 } 895 896 register_lapic_address(acpi_lapic_addr); 897 898 return count; 899 } 900 901 static int __init acpi_parse_madt_lapic_entries(void) 902 { 903 int count; 904 int x2count = 0; 905 906 if (!cpu_has_apic) 907 return -ENODEV; 908 909 /* 910 * Note that the LAPIC address is obtained from the MADT (32-bit value) 911 * and (optionally) overriden by a LAPIC_ADDR_OVR entry (64-bit value). 912 */ 913 914 count = 915 acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE, 916 acpi_parse_lapic_addr_ovr, 0); 917 if (count < 0) { 918 printk(KERN_ERR PREFIX 919 "Error parsing LAPIC address override entry\n"); 920 return count; 921 } 922 923 register_lapic_address(acpi_lapic_addr); 924 925 count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_SAPIC, 926 acpi_parse_sapic, MAX_LOCAL_APIC); 927 928 if (!count) { 929 x2count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_X2APIC, 930 acpi_parse_x2apic, MAX_LOCAL_APIC); 931 count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC, 932 acpi_parse_lapic, MAX_LOCAL_APIC); 933 } 934 if (!count && !x2count) { 935 printk(KERN_ERR PREFIX "No LAPIC entries present\n"); 936 /* TBD: Cleanup to allow fallback to MPS */ 937 return -ENODEV; 938 } else if (count < 0 || x2count < 0) { 939 printk(KERN_ERR PREFIX "Error parsing LAPIC entry\n"); 940 /* TBD: Cleanup to allow fallback to MPS */ 941 return count; 942 } 943 944 x2count = 945 acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_X2APIC_NMI, 946 acpi_parse_x2apic_nmi, 0); 947 count = 948 acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_NMI, acpi_parse_lapic_nmi, 0); 949 if (count < 0 || x2count < 0) { 950 printk(KERN_ERR PREFIX "Error parsing LAPIC NMI entry\n"); 951 /* TBD: Cleanup to allow fallback to MPS */ 952 return count; 953 } 954 return 0; 955 } 956 #endif /* CONFIG_X86_LOCAL_APIC */ 957 958 #ifdef CONFIG_X86_IO_APIC 959 #define MP_ISA_BUS 0 960 961 #ifdef CONFIG_X86_ES7000 962 extern int es7000_plat; 963 #endif 964 965 void __init mp_override_legacy_irq(u8 bus_irq, u8 polarity, u8 trigger, u32 gsi) 966 { 967 int ioapic; 968 int pin; 969 struct mpc_intsrc mp_irq; 970 971 /* 972 * Convert 'gsi' to 'ioapic.pin'. 973 */ 974 ioapic = mp_find_ioapic(gsi); 975 if (ioapic < 0) 976 return; 977 pin = mp_find_ioapic_pin(ioapic, gsi); 978 979 /* 980 * TBD: This check is for faulty timer entries, where the override 981 * erroneously sets the trigger to level, resulting in a HUGE 982 * increase of timer interrupts! 983 */ 984 if ((bus_irq == 0) && (trigger == 3)) 985 trigger = 1; 986 987 mp_irq.type = MP_INTSRC; 988 mp_irq.irqtype = mp_INT; 989 mp_irq.irqflag = (trigger << 2) | polarity; 990 mp_irq.srcbus = MP_ISA_BUS; 991 mp_irq.srcbusirq = bus_irq; /* IRQ */ 992 mp_irq.dstapic = mpc_ioapic_id(ioapic); /* APIC ID */ 993 mp_irq.dstirq = pin; /* INTIN# */ 994 995 mp_save_irq(&mp_irq); 996 997 isa_irq_to_gsi[bus_irq] = gsi; 998 } 999 1000 void __init mp_config_acpi_legacy_irqs(void) 1001 { 1002 int i; 1003 struct mpc_intsrc mp_irq; 1004 1005 #ifdef CONFIG_EISA 1006 /* 1007 * Fabricate the legacy ISA bus (bus #31). 1008 */ 1009 mp_bus_id_to_type[MP_ISA_BUS] = MP_BUS_ISA; 1010 #endif 1011 set_bit(MP_ISA_BUS, mp_bus_not_pci); 1012 pr_debug("Bus #%d is ISA\n", MP_ISA_BUS); 1013 1014 #ifdef CONFIG_X86_ES7000 1015 /* 1016 * Older generations of ES7000 have no legacy identity mappings 1017 */ 1018 if (es7000_plat == 1) 1019 return; 1020 #endif 1021 1022 /* 1023 * Use the default configuration for the IRQs 0-15. Unless 1024 * overridden by (MADT) interrupt source override entries. 1025 */ 1026 for (i = 0; i < 16; i++) { 1027 int ioapic, pin; 1028 unsigned int dstapic; 1029 int idx; 1030 u32 gsi; 1031 1032 /* Locate the gsi that irq i maps to. */ 1033 if (acpi_isa_irq_to_gsi(i, &gsi)) 1034 continue; 1035 1036 /* 1037 * Locate the IOAPIC that manages the ISA IRQ. 1038 */ 1039 ioapic = mp_find_ioapic(gsi); 1040 if (ioapic < 0) 1041 continue; 1042 pin = mp_find_ioapic_pin(ioapic, gsi); 1043 dstapic = mpc_ioapic_id(ioapic); 1044 1045 for (idx = 0; idx < mp_irq_entries; idx++) { 1046 struct mpc_intsrc *irq = mp_irqs + idx; 1047 1048 /* Do we already have a mapping for this ISA IRQ? */ 1049 if (irq->srcbus == MP_ISA_BUS && irq->srcbusirq == i) 1050 break; 1051 1052 /* Do we already have a mapping for this IOAPIC pin */ 1053 if (irq->dstapic == dstapic && irq->dstirq == pin) 1054 break; 1055 } 1056 1057 if (idx != mp_irq_entries) { 1058 printk(KERN_DEBUG "ACPI: IRQ%d used by override.\n", i); 1059 continue; /* IRQ already used */ 1060 } 1061 1062 mp_irq.type = MP_INTSRC; 1063 mp_irq.irqflag = 0; /* Conforming */ 1064 mp_irq.srcbus = MP_ISA_BUS; 1065 mp_irq.dstapic = dstapic; 1066 mp_irq.irqtype = mp_INT; 1067 mp_irq.srcbusirq = i; /* Identity mapped */ 1068 mp_irq.dstirq = pin; 1069 1070 mp_save_irq(&mp_irq); 1071 } 1072 } 1073 1074 static int mp_config_acpi_gsi(struct device *dev, u32 gsi, int trigger, 1075 int polarity) 1076 { 1077 #ifdef CONFIG_X86_MPPARSE 1078 struct mpc_intsrc mp_irq; 1079 struct pci_dev *pdev; 1080 unsigned char number; 1081 unsigned int devfn; 1082 int ioapic; 1083 u8 pin; 1084 1085 if (!acpi_ioapic) 1086 return 0; 1087 if (!dev) 1088 return 0; 1089 if (dev->bus != &pci_bus_type) 1090 return 0; 1091 1092 pdev = to_pci_dev(dev); 1093 number = pdev->bus->number; 1094 devfn = pdev->devfn; 1095 pin = pdev->pin; 1096 /* print the entry should happen on mptable identically */ 1097 mp_irq.type = MP_INTSRC; 1098 mp_irq.irqtype = mp_INT; 1099 mp_irq.irqflag = (trigger == ACPI_EDGE_SENSITIVE ? 4 : 0x0c) | 1100 (polarity == ACPI_ACTIVE_HIGH ? 1 : 3); 1101 mp_irq.srcbus = number; 1102 mp_irq.srcbusirq = (((devfn >> 3) & 0x1f) << 2) | ((pin - 1) & 3); 1103 ioapic = mp_find_ioapic(gsi); 1104 mp_irq.dstapic = mpc_ioapic_id(ioapic); 1105 mp_irq.dstirq = mp_find_ioapic_pin(ioapic, gsi); 1106 1107 mp_save_irq(&mp_irq); 1108 #endif 1109 return 0; 1110 } 1111 1112 int mp_register_gsi(struct device *dev, u32 gsi, int trigger, int polarity) 1113 { 1114 int ioapic; 1115 int ioapic_pin; 1116 struct io_apic_irq_attr irq_attr; 1117 int ret; 1118 1119 if (acpi_irq_model != ACPI_IRQ_MODEL_IOAPIC) 1120 return gsi; 1121 1122 /* Don't set up the ACPI SCI because it's already set up */ 1123 if (acpi_gbl_FADT.sci_interrupt == gsi) 1124 return gsi; 1125 1126 ioapic = mp_find_ioapic(gsi); 1127 if (ioapic < 0) { 1128 printk(KERN_WARNING "No IOAPIC for GSI %u\n", gsi); 1129 return gsi; 1130 } 1131 1132 ioapic_pin = mp_find_ioapic_pin(ioapic, gsi); 1133 1134 if (ioapic_pin > MP_MAX_IOAPIC_PIN) { 1135 printk(KERN_ERR "Invalid reference to IOAPIC pin " 1136 "%d-%d\n", mpc_ioapic_id(ioapic), 1137 ioapic_pin); 1138 return gsi; 1139 } 1140 1141 if (enable_update_mptable) 1142 mp_config_acpi_gsi(dev, gsi, trigger, polarity); 1143 1144 set_io_apic_irq_attr(&irq_attr, ioapic, ioapic_pin, 1145 trigger == ACPI_EDGE_SENSITIVE ? 0 : 1, 1146 polarity == ACPI_ACTIVE_HIGH ? 0 : 1); 1147 ret = io_apic_set_pci_routing(dev, gsi_to_irq(gsi), &irq_attr); 1148 if (ret < 0) 1149 gsi = INT_MIN; 1150 1151 return gsi; 1152 } 1153 1154 /* 1155 * Parse IOAPIC related entries in MADT 1156 * returns 0 on success, < 0 on error 1157 */ 1158 static int __init acpi_parse_madt_ioapic_entries(void) 1159 { 1160 int count; 1161 1162 /* 1163 * ACPI interpreter is required to complete interrupt setup, 1164 * so if it is off, don't enumerate the io-apics with ACPI. 1165 * If MPS is present, it will handle them, 1166 * otherwise the system will stay in PIC mode 1167 */ 1168 if (acpi_disabled || acpi_noirq) 1169 return -ENODEV; 1170 1171 if (!cpu_has_apic) 1172 return -ENODEV; 1173 1174 /* 1175 * if "noapic" boot option, don't look for IO-APICs 1176 */ 1177 if (skip_ioapic_setup) { 1178 printk(KERN_INFO PREFIX "Skipping IOAPIC probe " 1179 "due to 'noapic' option.\n"); 1180 return -ENODEV; 1181 } 1182 1183 count = 1184 acpi_table_parse_madt(ACPI_MADT_TYPE_IO_APIC, acpi_parse_ioapic, 1185 MAX_IO_APICS); 1186 if (!count) { 1187 printk(KERN_ERR PREFIX "No IOAPIC entries present\n"); 1188 return -ENODEV; 1189 } else if (count < 0) { 1190 printk(KERN_ERR PREFIX "Error parsing IOAPIC entry\n"); 1191 return count; 1192 } 1193 1194 count = 1195 acpi_table_parse_madt(ACPI_MADT_TYPE_INTERRUPT_OVERRIDE, acpi_parse_int_src_ovr, 1196 nr_irqs); 1197 if (count < 0) { 1198 printk(KERN_ERR PREFIX 1199 "Error parsing interrupt source overrides entry\n"); 1200 /* TBD: Cleanup to allow fallback to MPS */ 1201 return count; 1202 } 1203 1204 /* 1205 * If BIOS did not supply an INT_SRC_OVR for the SCI 1206 * pretend we got one so we can set the SCI flags. 1207 */ 1208 if (!acpi_sci_override_gsi) 1209 acpi_sci_ioapic_setup(acpi_gbl_FADT.sci_interrupt, 0, 0, 1210 acpi_gbl_FADT.sci_interrupt); 1211 1212 /* Fill in identity legacy mappings where no override */ 1213 mp_config_acpi_legacy_irqs(); 1214 1215 count = 1216 acpi_table_parse_madt(ACPI_MADT_TYPE_NMI_SOURCE, acpi_parse_nmi_src, 1217 nr_irqs); 1218 if (count < 0) { 1219 printk(KERN_ERR PREFIX "Error parsing NMI SRC entry\n"); 1220 /* TBD: Cleanup to allow fallback to MPS */ 1221 return count; 1222 } 1223 1224 return 0; 1225 } 1226 #else 1227 static inline int acpi_parse_madt_ioapic_entries(void) 1228 { 1229 return -1; 1230 } 1231 #endif /* !CONFIG_X86_IO_APIC */ 1232 1233 static void __init early_acpi_process_madt(void) 1234 { 1235 #ifdef CONFIG_X86_LOCAL_APIC 1236 int error; 1237 1238 if (!acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) { 1239 1240 /* 1241 * Parse MADT LAPIC entries 1242 */ 1243 error = early_acpi_parse_madt_lapic_addr_ovr(); 1244 if (!error) { 1245 acpi_lapic = 1; 1246 smp_found_config = 1; 1247 } 1248 if (error == -EINVAL) { 1249 /* 1250 * Dell Precision Workstation 410, 610 come here. 1251 */ 1252 printk(KERN_ERR PREFIX 1253 "Invalid BIOS MADT, disabling ACPI\n"); 1254 disable_acpi(); 1255 } 1256 } 1257 #endif 1258 } 1259 1260 static void __init acpi_process_madt(void) 1261 { 1262 #ifdef CONFIG_X86_LOCAL_APIC 1263 int error; 1264 1265 if (!acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) { 1266 1267 /* 1268 * Parse MADT LAPIC entries 1269 */ 1270 error = acpi_parse_madt_lapic_entries(); 1271 if (!error) { 1272 acpi_lapic = 1; 1273 1274 /* 1275 * Parse MADT IO-APIC entries 1276 */ 1277 error = acpi_parse_madt_ioapic_entries(); 1278 if (!error) { 1279 acpi_set_irq_model_ioapic(); 1280 1281 smp_found_config = 1; 1282 } 1283 } 1284 if (error == -EINVAL) { 1285 /* 1286 * Dell Precision Workstation 410, 610 come here. 1287 */ 1288 printk(KERN_ERR PREFIX 1289 "Invalid BIOS MADT, disabling ACPI\n"); 1290 disable_acpi(); 1291 } 1292 } else { 1293 /* 1294 * ACPI found no MADT, and so ACPI wants UP PIC mode. 1295 * In the event an MPS table was found, forget it. 1296 * Boot with "acpi=off" to use MPS on such a system. 1297 */ 1298 if (smp_found_config) { 1299 printk(KERN_WARNING PREFIX 1300 "No APIC-table, disabling MPS\n"); 1301 smp_found_config = 0; 1302 } 1303 } 1304 1305 /* 1306 * ACPI supports both logical (e.g. Hyper-Threading) and physical 1307 * processors, where MPS only supports physical. 1308 */ 1309 if (acpi_lapic && acpi_ioapic) 1310 printk(KERN_INFO "Using ACPI (MADT) for SMP configuration " 1311 "information\n"); 1312 else if (acpi_lapic) 1313 printk(KERN_INFO "Using ACPI for processor (LAPIC) " 1314 "configuration information\n"); 1315 #endif 1316 return; 1317 } 1318 1319 static int __init disable_acpi_irq(const struct dmi_system_id *d) 1320 { 1321 if (!acpi_force) { 1322 printk(KERN_NOTICE "%s detected: force use of acpi=noirq\n", 1323 d->ident); 1324 acpi_noirq_set(); 1325 } 1326 return 0; 1327 } 1328 1329 static int __init disable_acpi_pci(const struct dmi_system_id *d) 1330 { 1331 if (!acpi_force) { 1332 printk(KERN_NOTICE "%s detected: force use of pci=noacpi\n", 1333 d->ident); 1334 acpi_disable_pci(); 1335 } 1336 return 0; 1337 } 1338 1339 static int __init dmi_disable_acpi(const struct dmi_system_id *d) 1340 { 1341 if (!acpi_force) { 1342 printk(KERN_NOTICE "%s detected: acpi off\n", d->ident); 1343 disable_acpi(); 1344 } else { 1345 printk(KERN_NOTICE 1346 "Warning: DMI blacklist says broken, but acpi forced\n"); 1347 } 1348 return 0; 1349 } 1350 1351 /* 1352 * Force ignoring BIOS IRQ0 override 1353 */ 1354 static int __init dmi_ignore_irq0_timer_override(const struct dmi_system_id *d) 1355 { 1356 if (!acpi_skip_timer_override) { 1357 pr_notice("%s detected: Ignoring BIOS IRQ0 override\n", 1358 d->ident); 1359 acpi_skip_timer_override = 1; 1360 } 1361 return 0; 1362 } 1363 1364 /* 1365 * If your system is blacklisted here, but you find that acpi=force 1366 * works for you, please contact linux-acpi@vger.kernel.org 1367 */ 1368 static struct dmi_system_id __initdata acpi_dmi_table[] = { 1369 /* 1370 * Boxes that need ACPI disabled 1371 */ 1372 { 1373 .callback = dmi_disable_acpi, 1374 .ident = "IBM Thinkpad", 1375 .matches = { 1376 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), 1377 DMI_MATCH(DMI_BOARD_NAME, "2629H1G"), 1378 }, 1379 }, 1380 1381 /* 1382 * Boxes that need ACPI PCI IRQ routing disabled 1383 */ 1384 { 1385 .callback = disable_acpi_irq, 1386 .ident = "ASUS A7V", 1387 .matches = { 1388 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC"), 1389 DMI_MATCH(DMI_BOARD_NAME, "<A7V>"), 1390 /* newer BIOS, Revision 1011, does work */ 1391 DMI_MATCH(DMI_BIOS_VERSION, 1392 "ASUS A7V ACPI BIOS Revision 1007"), 1393 }, 1394 }, 1395 { 1396 /* 1397 * Latest BIOS for IBM 600E (1.16) has bad pcinum 1398 * for LPC bridge, which is needed for the PCI 1399 * interrupt links to work. DSDT fix is in bug 5966. 1400 * 2645, 2646 model numbers are shared with 600/600E/600X 1401 */ 1402 .callback = disable_acpi_irq, 1403 .ident = "IBM Thinkpad 600 Series 2645", 1404 .matches = { 1405 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), 1406 DMI_MATCH(DMI_BOARD_NAME, "2645"), 1407 }, 1408 }, 1409 { 1410 .callback = disable_acpi_irq, 1411 .ident = "IBM Thinkpad 600 Series 2646", 1412 .matches = { 1413 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), 1414 DMI_MATCH(DMI_BOARD_NAME, "2646"), 1415 }, 1416 }, 1417 /* 1418 * Boxes that need ACPI PCI IRQ routing and PCI scan disabled 1419 */ 1420 { /* _BBN 0 bug */ 1421 .callback = disable_acpi_pci, 1422 .ident = "ASUS PR-DLS", 1423 .matches = { 1424 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."), 1425 DMI_MATCH(DMI_BOARD_NAME, "PR-DLS"), 1426 DMI_MATCH(DMI_BIOS_VERSION, 1427 "ASUS PR-DLS ACPI BIOS Revision 1010"), 1428 DMI_MATCH(DMI_BIOS_DATE, "03/21/2003") 1429 }, 1430 }, 1431 { 1432 .callback = disable_acpi_pci, 1433 .ident = "Acer TravelMate 36x Laptop", 1434 .matches = { 1435 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 1436 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 360"), 1437 }, 1438 }, 1439 {} 1440 }; 1441 1442 /* second table for DMI checks that should run after early-quirks */ 1443 static struct dmi_system_id __initdata acpi_dmi_table_late[] = { 1444 /* 1445 * HP laptops which use a DSDT reporting as HP/SB400/10000, 1446 * which includes some code which overrides all temperature 1447 * trip points to 16C if the INTIN2 input of the I/O APIC 1448 * is enabled. This input is incorrectly designated the 1449 * ISA IRQ 0 via an interrupt source override even though 1450 * it is wired to the output of the master 8259A and INTIN0 1451 * is not connected at all. Force ignoring BIOS IRQ0 1452 * override in that cases. 1453 */ 1454 { 1455 .callback = dmi_ignore_irq0_timer_override, 1456 .ident = "HP nx6115 laptop", 1457 .matches = { 1458 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), 1459 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6115"), 1460 }, 1461 }, 1462 { 1463 .callback = dmi_ignore_irq0_timer_override, 1464 .ident = "HP NX6125 laptop", 1465 .matches = { 1466 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), 1467 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6125"), 1468 }, 1469 }, 1470 { 1471 .callback = dmi_ignore_irq0_timer_override, 1472 .ident = "HP NX6325 laptop", 1473 .matches = { 1474 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), 1475 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6325"), 1476 }, 1477 }, 1478 { 1479 .callback = dmi_ignore_irq0_timer_override, 1480 .ident = "HP 6715b laptop", 1481 .matches = { 1482 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), 1483 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq 6715b"), 1484 }, 1485 }, 1486 { 1487 .callback = dmi_ignore_irq0_timer_override, 1488 .ident = "FUJITSU SIEMENS", 1489 .matches = { 1490 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"), 1491 DMI_MATCH(DMI_PRODUCT_NAME, "AMILO PRO V2030"), 1492 }, 1493 }, 1494 {} 1495 }; 1496 1497 /* 1498 * acpi_boot_table_init() and acpi_boot_init() 1499 * called from setup_arch(), always. 1500 * 1. checksums all tables 1501 * 2. enumerates lapics 1502 * 3. enumerates io-apics 1503 * 1504 * acpi_table_init() is separate to allow reading SRAT without 1505 * other side effects. 1506 * 1507 * side effects of acpi_boot_init: 1508 * acpi_lapic = 1 if LAPIC found 1509 * acpi_ioapic = 1 if IOAPIC found 1510 * if (acpi_lapic && acpi_ioapic) smp_found_config = 1; 1511 * if acpi_blacklisted() acpi_disabled = 1; 1512 * acpi_irq_model=... 1513 * ... 1514 */ 1515 1516 void __init acpi_boot_table_init(void) 1517 { 1518 dmi_check_system(acpi_dmi_table); 1519 1520 /* 1521 * If acpi_disabled, bail out 1522 */ 1523 if (acpi_disabled) 1524 return; 1525 1526 /* 1527 * Initialize the ACPI boot-time table parser. 1528 */ 1529 if (acpi_table_init()) { 1530 disable_acpi(); 1531 return; 1532 } 1533 1534 acpi_table_parse(ACPI_SIG_BOOT, acpi_parse_sbf); 1535 1536 /* 1537 * blacklist may disable ACPI entirely 1538 */ 1539 if (acpi_blacklisted()) { 1540 if (acpi_force) { 1541 printk(KERN_WARNING PREFIX "acpi=force override\n"); 1542 } else { 1543 printk(KERN_WARNING PREFIX "Disabling ACPI support\n"); 1544 disable_acpi(); 1545 return; 1546 } 1547 } 1548 } 1549 1550 int __init early_acpi_boot_init(void) 1551 { 1552 /* 1553 * If acpi_disabled, bail out 1554 */ 1555 if (acpi_disabled) 1556 return 1; 1557 1558 /* 1559 * Process the Multiple APIC Description Table (MADT), if present 1560 */ 1561 early_acpi_process_madt(); 1562 1563 return 0; 1564 } 1565 1566 int __init acpi_boot_init(void) 1567 { 1568 /* those are executed after early-quirks are executed */ 1569 dmi_check_system(acpi_dmi_table_late); 1570 1571 /* 1572 * If acpi_disabled, bail out 1573 */ 1574 if (acpi_disabled) 1575 return 1; 1576 1577 acpi_table_parse(ACPI_SIG_BOOT, acpi_parse_sbf); 1578 1579 /* 1580 * set sci_int and PM timer address 1581 */ 1582 acpi_table_parse(ACPI_SIG_FADT, acpi_parse_fadt); 1583 1584 /* 1585 * Process the Multiple APIC Description Table (MADT), if present 1586 */ 1587 acpi_process_madt(); 1588 1589 acpi_table_parse(ACPI_SIG_HPET, acpi_parse_hpet); 1590 1591 if (!acpi_noirq) 1592 x86_init.pci.init = pci_acpi_init; 1593 1594 return 0; 1595 } 1596 1597 static int __init parse_acpi(char *arg) 1598 { 1599 if (!arg) 1600 return -EINVAL; 1601 1602 /* "acpi=off" disables both ACPI table parsing and interpreter */ 1603 if (strcmp(arg, "off") == 0) { 1604 disable_acpi(); 1605 } 1606 /* acpi=force to over-ride black-list */ 1607 else if (strcmp(arg, "force") == 0) { 1608 acpi_force = 1; 1609 acpi_disabled = 0; 1610 } 1611 /* acpi=strict disables out-of-spec workarounds */ 1612 else if (strcmp(arg, "strict") == 0) { 1613 acpi_strict = 1; 1614 } 1615 /* acpi=rsdt use RSDT instead of XSDT */ 1616 else if (strcmp(arg, "rsdt") == 0) { 1617 acpi_rsdt_forced = 1; 1618 } 1619 /* "acpi=noirq" disables ACPI interrupt routing */ 1620 else if (strcmp(arg, "noirq") == 0) { 1621 acpi_noirq_set(); 1622 } 1623 /* "acpi=copy_dsdt" copys DSDT */ 1624 else if (strcmp(arg, "copy_dsdt") == 0) { 1625 acpi_gbl_copy_dsdt_locally = 1; 1626 } 1627 /* "acpi=nocmcff" disables FF mode for corrected errors */ 1628 else if (strcmp(arg, "nocmcff") == 0) { 1629 acpi_disable_cmcff = 1; 1630 } else { 1631 /* Core will printk when we return error. */ 1632 return -EINVAL; 1633 } 1634 return 0; 1635 } 1636 early_param("acpi", parse_acpi); 1637 1638 /* FIXME: Using pci= for an ACPI parameter is a travesty. */ 1639 static int __init parse_pci(char *arg) 1640 { 1641 if (arg && strcmp(arg, "noacpi") == 0) 1642 acpi_disable_pci(); 1643 return 0; 1644 } 1645 early_param("pci", parse_pci); 1646 1647 int __init acpi_mps_check(void) 1648 { 1649 #if defined(CONFIG_X86_LOCAL_APIC) && !defined(CONFIG_X86_MPPARSE) 1650 /* mptable code is not built-in*/ 1651 if (acpi_disabled || acpi_noirq) { 1652 printk(KERN_WARNING "MPS support code is not built-in.\n" 1653 "Using acpi=off or acpi=noirq or pci=noacpi " 1654 "may have problem\n"); 1655 return 1; 1656 } 1657 #endif 1658 return 0; 1659 } 1660 1661 #ifdef CONFIG_X86_IO_APIC 1662 static int __init parse_acpi_skip_timer_override(char *arg) 1663 { 1664 acpi_skip_timer_override = 1; 1665 return 0; 1666 } 1667 early_param("acpi_skip_timer_override", parse_acpi_skip_timer_override); 1668 1669 static int __init parse_acpi_use_timer_override(char *arg) 1670 { 1671 acpi_use_timer_override = 1; 1672 return 0; 1673 } 1674 early_param("acpi_use_timer_override", parse_acpi_use_timer_override); 1675 #endif /* CONFIG_X86_IO_APIC */ 1676 1677 static int __init setup_acpi_sci(char *s) 1678 { 1679 if (!s) 1680 return -EINVAL; 1681 if (!strcmp(s, "edge")) 1682 acpi_sci_flags = ACPI_MADT_TRIGGER_EDGE | 1683 (acpi_sci_flags & ~ACPI_MADT_TRIGGER_MASK); 1684 else if (!strcmp(s, "level")) 1685 acpi_sci_flags = ACPI_MADT_TRIGGER_LEVEL | 1686 (acpi_sci_flags & ~ACPI_MADT_TRIGGER_MASK); 1687 else if (!strcmp(s, "high")) 1688 acpi_sci_flags = ACPI_MADT_POLARITY_ACTIVE_HIGH | 1689 (acpi_sci_flags & ~ACPI_MADT_POLARITY_MASK); 1690 else if (!strcmp(s, "low")) 1691 acpi_sci_flags = ACPI_MADT_POLARITY_ACTIVE_LOW | 1692 (acpi_sci_flags & ~ACPI_MADT_POLARITY_MASK); 1693 else 1694 return -EINVAL; 1695 return 0; 1696 } 1697 early_param("acpi_sci", setup_acpi_sci); 1698 1699 int __acpi_acquire_global_lock(unsigned int *lock) 1700 { 1701 unsigned int old, new, val; 1702 do { 1703 old = *lock; 1704 new = (((old & ~0x3) + 2) + ((old >> 1) & 0x1)); 1705 val = cmpxchg(lock, old, new); 1706 } while (unlikely (val != old)); 1707 return (new < 3) ? -1 : 0; 1708 } 1709 1710 int __acpi_release_global_lock(unsigned int *lock) 1711 { 1712 unsigned int old, new, val; 1713 do { 1714 old = *lock; 1715 new = old & ~0x3; 1716 val = cmpxchg(lock, old, new); 1717 } while (unlikely (val != old)); 1718 return old & 0x1; 1719 } 1720 1721 void __init arch_reserve_mem_area(acpi_physical_address addr, size_t size) 1722 { 1723 e820_add_region(addr, size, E820_ACPI); 1724 update_e820(); 1725 } 1726