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/bootmem.h> 35 #include <linux/ioport.h> 36 #include <linux/pci.h> 37 38 #include <asm/pgtable.h> 39 #include <asm/io_apic.h> 40 #include <asm/apic.h> 41 #include <asm/io.h> 42 #include <asm/mpspec.h> 43 #include <asm/smp.h> 44 45 static int __initdata acpi_force = 0; 46 u32 acpi_rsdt_forced; 47 int acpi_disabled; 48 EXPORT_SYMBOL(acpi_disabled); 49 50 #ifdef CONFIG_X86_64 51 # include <asm/proto.h> 52 # include <asm/numa_64.h> 53 #endif /* X86 */ 54 55 #define BAD_MADT_ENTRY(entry, end) ( \ 56 (!entry) || (unsigned long)entry + sizeof(*entry) > end || \ 57 ((struct acpi_subtable_header *)entry)->length < sizeof(*entry)) 58 59 #define PREFIX "ACPI: " 60 61 int acpi_noirq; /* skip ACPI IRQ initialization */ 62 int acpi_pci_disabled; /* skip ACPI PCI scan and IRQ initialization */ 63 EXPORT_SYMBOL(acpi_pci_disabled); 64 int acpi_ht __initdata = 1; /* enable HT */ 65 66 int acpi_lapic; 67 int acpi_ioapic; 68 int acpi_strict; 69 70 u8 acpi_sci_flags __initdata; 71 int acpi_sci_override_gsi __initdata; 72 int acpi_skip_timer_override __initdata; 73 int acpi_use_timer_override __initdata; 74 75 #ifdef CONFIG_X86_LOCAL_APIC 76 static u64 acpi_lapic_addr __initdata = APIC_DEFAULT_PHYS_BASE; 77 #endif 78 79 #ifndef __HAVE_ARCH_CMPXCHG 80 #warning ACPI uses CMPXCHG, i486 and later hardware 81 #endif 82 83 /* -------------------------------------------------------------------------- 84 Boot-time Configuration 85 -------------------------------------------------------------------------- */ 86 87 /* 88 * The default interrupt routing model is PIC (8259). This gets 89 * overridden if IOAPICs are enumerated (below). 90 */ 91 enum acpi_irq_model_id acpi_irq_model = ACPI_IRQ_MODEL_PIC; 92 93 94 /* 95 * Temporarily use the virtual area starting from FIX_IO_APIC_BASE_END, 96 * to map the target physical address. The problem is that set_fixmap() 97 * provides a single page, and it is possible that the page is not 98 * sufficient. 99 * By using this area, we can map up to MAX_IO_APICS pages temporarily, 100 * i.e. until the next __va_range() call. 101 * 102 * Important Safety Note: The fixed I/O APIC page numbers are *subtracted* 103 * from the fixed base. That's why we start at FIX_IO_APIC_BASE_END and 104 * count idx down while incrementing the phys address. 105 */ 106 char *__init __acpi_map_table(unsigned long phys, unsigned long size) 107 { 108 109 if (!phys || !size) 110 return NULL; 111 112 return early_ioremap(phys, size); 113 } 114 void __init __acpi_unmap_table(char *map, unsigned long size) 115 { 116 if (!map || !size) 117 return; 118 119 early_iounmap(map, size); 120 } 121 122 #ifdef CONFIG_X86_LOCAL_APIC 123 static int __init acpi_parse_madt(struct acpi_table_header *table) 124 { 125 struct acpi_table_madt *madt = NULL; 126 127 if (!cpu_has_apic) 128 return -EINVAL; 129 130 madt = (struct acpi_table_madt *)table; 131 if (!madt) { 132 printk(KERN_WARNING PREFIX "Unable to map MADT\n"); 133 return -ENODEV; 134 } 135 136 if (madt->address) { 137 acpi_lapic_addr = (u64) madt->address; 138 139 printk(KERN_DEBUG PREFIX "Local APIC address 0x%08x\n", 140 madt->address); 141 } 142 143 default_acpi_madt_oem_check(madt->header.oem_id, 144 madt->header.oem_table_id); 145 146 return 0; 147 } 148 149 static void __cpuinit acpi_register_lapic(int id, u8 enabled) 150 { 151 unsigned int ver = 0; 152 153 if (!enabled) { 154 ++disabled_cpus; 155 return; 156 } 157 158 if (boot_cpu_physical_apicid != -1U) 159 ver = apic_version[boot_cpu_physical_apicid]; 160 161 generic_processor_info(id, ver); 162 } 163 164 static int __init 165 acpi_parse_x2apic(struct acpi_subtable_header *header, const unsigned long end) 166 { 167 struct acpi_madt_local_x2apic *processor = NULL; 168 169 processor = (struct acpi_madt_local_x2apic *)header; 170 171 if (BAD_MADT_ENTRY(processor, end)) 172 return -EINVAL; 173 174 acpi_table_print_madt_entry(header); 175 176 #ifdef CONFIG_X86_X2APIC 177 /* 178 * We need to register disabled CPU as well to permit 179 * counting disabled CPUs. This allows us to size 180 * cpus_possible_map more accurately, to permit 181 * to not preallocating memory for all NR_CPUS 182 * when we use CPU hotplug. 183 */ 184 acpi_register_lapic(processor->local_apic_id, /* APIC ID */ 185 processor->lapic_flags & ACPI_MADT_ENABLED); 186 #else 187 printk(KERN_WARNING PREFIX "x2apic entry ignored\n"); 188 #endif 189 190 return 0; 191 } 192 193 static int __init 194 acpi_parse_lapic(struct acpi_subtable_header * header, const unsigned long end) 195 { 196 struct acpi_madt_local_apic *processor = NULL; 197 198 processor = (struct acpi_madt_local_apic *)header; 199 200 if (BAD_MADT_ENTRY(processor, end)) 201 return -EINVAL; 202 203 acpi_table_print_madt_entry(header); 204 205 /* 206 * We need to register disabled CPU as well to permit 207 * counting disabled CPUs. This allows us to size 208 * cpus_possible_map more accurately, to permit 209 * to not preallocating memory for all NR_CPUS 210 * when we use CPU hotplug. 211 */ 212 acpi_register_lapic(processor->id, /* APIC ID */ 213 processor->lapic_flags & ACPI_MADT_ENABLED); 214 215 return 0; 216 } 217 218 static int __init 219 acpi_parse_sapic(struct acpi_subtable_header *header, const unsigned long end) 220 { 221 struct acpi_madt_local_sapic *processor = NULL; 222 223 processor = (struct acpi_madt_local_sapic *)header; 224 225 if (BAD_MADT_ENTRY(processor, end)) 226 return -EINVAL; 227 228 acpi_table_print_madt_entry(header); 229 230 acpi_register_lapic((processor->id << 8) | processor->eid,/* APIC ID */ 231 processor->lapic_flags & ACPI_MADT_ENABLED); 232 233 return 0; 234 } 235 236 static int __init 237 acpi_parse_lapic_addr_ovr(struct acpi_subtable_header * header, 238 const unsigned long end) 239 { 240 struct acpi_madt_local_apic_override *lapic_addr_ovr = NULL; 241 242 lapic_addr_ovr = (struct acpi_madt_local_apic_override *)header; 243 244 if (BAD_MADT_ENTRY(lapic_addr_ovr, end)) 245 return -EINVAL; 246 247 acpi_lapic_addr = lapic_addr_ovr->address; 248 249 return 0; 250 } 251 252 static int __init 253 acpi_parse_x2apic_nmi(struct acpi_subtable_header *header, 254 const unsigned long end) 255 { 256 struct acpi_madt_local_x2apic_nmi *x2apic_nmi = NULL; 257 258 x2apic_nmi = (struct acpi_madt_local_x2apic_nmi *)header; 259 260 if (BAD_MADT_ENTRY(x2apic_nmi, end)) 261 return -EINVAL; 262 263 acpi_table_print_madt_entry(header); 264 265 if (x2apic_nmi->lint != 1) 266 printk(KERN_WARNING PREFIX "NMI not connected to LINT 1!\n"); 267 268 return 0; 269 } 270 271 static int __init 272 acpi_parse_lapic_nmi(struct acpi_subtable_header * header, const unsigned long end) 273 { 274 struct acpi_madt_local_apic_nmi *lapic_nmi = NULL; 275 276 lapic_nmi = (struct acpi_madt_local_apic_nmi *)header; 277 278 if (BAD_MADT_ENTRY(lapic_nmi, end)) 279 return -EINVAL; 280 281 acpi_table_print_madt_entry(header); 282 283 if (lapic_nmi->lint != 1) 284 printk(KERN_WARNING PREFIX "NMI not connected to LINT 1!\n"); 285 286 return 0; 287 } 288 289 #endif /*CONFIG_X86_LOCAL_APIC */ 290 291 #ifdef CONFIG_X86_IO_APIC 292 293 static int __init 294 acpi_parse_ioapic(struct acpi_subtable_header * header, const unsigned long end) 295 { 296 struct acpi_madt_io_apic *ioapic = NULL; 297 298 ioapic = (struct acpi_madt_io_apic *)header; 299 300 if (BAD_MADT_ENTRY(ioapic, end)) 301 return -EINVAL; 302 303 acpi_table_print_madt_entry(header); 304 305 mp_register_ioapic(ioapic->id, 306 ioapic->address, ioapic->global_irq_base); 307 308 return 0; 309 } 310 311 /* 312 * Parse Interrupt Source Override for the ACPI SCI 313 */ 314 static void __init acpi_sci_ioapic_setup(u32 gsi, u16 polarity, u16 trigger) 315 { 316 if (trigger == 0) /* compatible SCI trigger is level */ 317 trigger = 3; 318 319 if (polarity == 0) /* compatible SCI polarity is low */ 320 polarity = 3; 321 322 /* Command-line over-ride via acpi_sci= */ 323 if (acpi_sci_flags & ACPI_MADT_TRIGGER_MASK) 324 trigger = (acpi_sci_flags & ACPI_MADT_TRIGGER_MASK) >> 2; 325 326 if (acpi_sci_flags & ACPI_MADT_POLARITY_MASK) 327 polarity = acpi_sci_flags & ACPI_MADT_POLARITY_MASK; 328 329 /* 330 * mp_config_acpi_legacy_irqs() already setup IRQs < 16 331 * If GSI is < 16, this will update its flags, 332 * else it will create a new mp_irqs[] entry. 333 */ 334 mp_override_legacy_irq(gsi, polarity, trigger, gsi); 335 336 /* 337 * stash over-ride to indicate we've been here 338 * and for later update of acpi_gbl_FADT 339 */ 340 acpi_sci_override_gsi = gsi; 341 return; 342 } 343 344 static int __init 345 acpi_parse_int_src_ovr(struct acpi_subtable_header * header, 346 const unsigned long end) 347 { 348 struct acpi_madt_interrupt_override *intsrc = NULL; 349 350 intsrc = (struct acpi_madt_interrupt_override *)header; 351 352 if (BAD_MADT_ENTRY(intsrc, end)) 353 return -EINVAL; 354 355 acpi_table_print_madt_entry(header); 356 357 if (intsrc->source_irq == acpi_gbl_FADT.sci_interrupt) { 358 acpi_sci_ioapic_setup(intsrc->global_irq, 359 intsrc->inti_flags & ACPI_MADT_POLARITY_MASK, 360 (intsrc->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2); 361 return 0; 362 } 363 364 if (acpi_skip_timer_override && 365 intsrc->source_irq == 0 && intsrc->global_irq == 2) { 366 printk(PREFIX "BIOS IRQ0 pin2 override ignored.\n"); 367 return 0; 368 } 369 370 mp_override_legacy_irq(intsrc->source_irq, 371 intsrc->inti_flags & ACPI_MADT_POLARITY_MASK, 372 (intsrc->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2, 373 intsrc->global_irq); 374 375 return 0; 376 } 377 378 static int __init 379 acpi_parse_nmi_src(struct acpi_subtable_header * header, const unsigned long end) 380 { 381 struct acpi_madt_nmi_source *nmi_src = NULL; 382 383 nmi_src = (struct acpi_madt_nmi_source *)header; 384 385 if (BAD_MADT_ENTRY(nmi_src, end)) 386 return -EINVAL; 387 388 acpi_table_print_madt_entry(header); 389 390 /* TBD: Support nimsrc entries? */ 391 392 return 0; 393 } 394 395 #endif /* CONFIG_X86_IO_APIC */ 396 397 /* 398 * acpi_pic_sci_set_trigger() 399 * 400 * use ELCR to set PIC-mode trigger type for SCI 401 * 402 * If a PIC-mode SCI is not recognized or gives spurious IRQ7's 403 * it may require Edge Trigger -- use "acpi_sci=edge" 404 * 405 * Port 0x4d0-4d1 are ECLR1 and ECLR2, the Edge/Level Control Registers 406 * for the 8259 PIC. bit[n] = 1 means irq[n] is Level, otherwise Edge. 407 * ECLR1 is IRQs 0-7 (IRQ 0, 1, 2 must be 0) 408 * ECLR2 is IRQs 8-15 (IRQ 8, 13 must be 0) 409 */ 410 411 void __init acpi_pic_sci_set_trigger(unsigned int irq, u16 trigger) 412 { 413 unsigned int mask = 1 << irq; 414 unsigned int old, new; 415 416 /* Real old ELCR mask */ 417 old = inb(0x4d0) | (inb(0x4d1) << 8); 418 419 /* 420 * If we use ACPI to set PCI IRQs, then we should clear ELCR 421 * since we will set it correctly as we enable the PCI irq 422 * routing. 423 */ 424 new = acpi_noirq ? old : 0; 425 426 /* 427 * Update SCI information in the ELCR, it isn't in the PCI 428 * routing tables.. 429 */ 430 switch (trigger) { 431 case 1: /* Edge - clear */ 432 new &= ~mask; 433 break; 434 case 3: /* Level - set */ 435 new |= mask; 436 break; 437 } 438 439 if (old == new) 440 return; 441 442 printk(PREFIX "setting ELCR to %04x (from %04x)\n", new, old); 443 outb(new, 0x4d0); 444 outb(new >> 8, 0x4d1); 445 } 446 447 int acpi_gsi_to_irq(u32 gsi, unsigned int *irq) 448 { 449 *irq = gsi; 450 return 0; 451 } 452 453 /* 454 * success: return IRQ number (>=0) 455 * failure: return < 0 456 */ 457 int acpi_register_gsi(struct device *dev, u32 gsi, int trigger, int polarity) 458 { 459 unsigned int irq; 460 unsigned int plat_gsi = gsi; 461 462 #ifdef CONFIG_PCI 463 /* 464 * Make sure all (legacy) PCI IRQs are set as level-triggered. 465 */ 466 if (acpi_irq_model == ACPI_IRQ_MODEL_PIC) { 467 if (trigger == ACPI_LEVEL_SENSITIVE) 468 eisa_set_level_irq(gsi); 469 } 470 #endif 471 472 #ifdef CONFIG_X86_IO_APIC 473 if (acpi_irq_model == ACPI_IRQ_MODEL_IOAPIC) { 474 plat_gsi = mp_register_gsi(dev, gsi, trigger, polarity); 475 } 476 #endif 477 acpi_gsi_to_irq(plat_gsi, &irq); 478 return irq; 479 } 480 481 /* 482 * ACPI based hotplug support for CPU 483 */ 484 #ifdef CONFIG_ACPI_HOTPLUG_CPU 485 486 static void acpi_map_cpu2node(acpi_handle handle, int cpu, int physid) 487 { 488 #ifdef CONFIG_ACPI_NUMA 489 int nid; 490 491 nid = acpi_get_node(handle); 492 if (nid == -1 || !node_online(nid)) 493 return; 494 #ifdef CONFIG_X86_64 495 apicid_to_node[physid] = nid; 496 numa_set_node(cpu, nid); 497 #else /* CONFIG_X86_32 */ 498 apicid_2_node[physid] = nid; 499 cpu_to_node_map[cpu] = nid; 500 #endif 501 502 #endif 503 } 504 505 static int __cpuinit _acpi_map_lsapic(acpi_handle handle, int *pcpu) 506 { 507 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; 508 union acpi_object *obj; 509 struct acpi_madt_local_apic *lapic; 510 cpumask_var_t tmp_map, new_map; 511 u8 physid; 512 int cpu; 513 int retval = -ENOMEM; 514 515 if (ACPI_FAILURE(acpi_evaluate_object(handle, "_MAT", NULL, &buffer))) 516 return -EINVAL; 517 518 if (!buffer.length || !buffer.pointer) 519 return -EINVAL; 520 521 obj = buffer.pointer; 522 if (obj->type != ACPI_TYPE_BUFFER || 523 obj->buffer.length < sizeof(*lapic)) { 524 kfree(buffer.pointer); 525 return -EINVAL; 526 } 527 528 lapic = (struct acpi_madt_local_apic *)obj->buffer.pointer; 529 530 if (lapic->header.type != ACPI_MADT_TYPE_LOCAL_APIC || 531 !(lapic->lapic_flags & ACPI_MADT_ENABLED)) { 532 kfree(buffer.pointer); 533 return -EINVAL; 534 } 535 536 physid = lapic->id; 537 538 kfree(buffer.pointer); 539 buffer.length = ACPI_ALLOCATE_BUFFER; 540 buffer.pointer = NULL; 541 542 if (!alloc_cpumask_var(&tmp_map, GFP_KERNEL)) 543 goto out; 544 545 if (!alloc_cpumask_var(&new_map, GFP_KERNEL)) 546 goto free_tmp_map; 547 548 cpumask_copy(tmp_map, cpu_present_mask); 549 acpi_register_lapic(physid, lapic->lapic_flags & ACPI_MADT_ENABLED); 550 551 /* 552 * If mp_register_lapic successfully generates a new logical cpu 553 * number, then the following will get us exactly what was mapped 554 */ 555 cpumask_andnot(new_map, cpu_present_mask, tmp_map); 556 if (cpumask_empty(new_map)) { 557 printk ("Unable to map lapic to logical cpu number\n"); 558 retval = -EINVAL; 559 goto free_new_map; 560 } 561 562 cpu = cpumask_first(new_map); 563 acpi_map_cpu2node(handle, cpu, physid); 564 565 *pcpu = cpu; 566 retval = 0; 567 568 free_new_map: 569 free_cpumask_var(new_map); 570 free_tmp_map: 571 free_cpumask_var(tmp_map); 572 out: 573 return retval; 574 } 575 576 /* wrapper to silence section mismatch warning */ 577 int __ref acpi_map_lsapic(acpi_handle handle, int *pcpu) 578 { 579 return _acpi_map_lsapic(handle, pcpu); 580 } 581 EXPORT_SYMBOL(acpi_map_lsapic); 582 583 int acpi_unmap_lsapic(int cpu) 584 { 585 per_cpu(x86_cpu_to_apicid, cpu) = -1; 586 set_cpu_present(cpu, false); 587 num_processors--; 588 589 return (0); 590 } 591 592 EXPORT_SYMBOL(acpi_unmap_lsapic); 593 #endif /* CONFIG_ACPI_HOTPLUG_CPU */ 594 595 int acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base) 596 { 597 /* TBD */ 598 return -EINVAL; 599 } 600 601 EXPORT_SYMBOL(acpi_register_ioapic); 602 603 int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base) 604 { 605 /* TBD */ 606 return -EINVAL; 607 } 608 609 EXPORT_SYMBOL(acpi_unregister_ioapic); 610 611 static int __init acpi_parse_sbf(struct acpi_table_header *table) 612 { 613 struct acpi_table_boot *sb; 614 615 sb = (struct acpi_table_boot *)table; 616 if (!sb) { 617 printk(KERN_WARNING PREFIX "Unable to map SBF\n"); 618 return -ENODEV; 619 } 620 621 sbf_port = sb->cmos_index; /* Save CMOS port */ 622 623 return 0; 624 } 625 626 #ifdef CONFIG_HPET_TIMER 627 #include <asm/hpet.h> 628 629 static struct __initdata resource *hpet_res; 630 631 static int __init acpi_parse_hpet(struct acpi_table_header *table) 632 { 633 struct acpi_table_hpet *hpet_tbl; 634 635 hpet_tbl = (struct acpi_table_hpet *)table; 636 if (!hpet_tbl) { 637 printk(KERN_WARNING PREFIX "Unable to map HPET\n"); 638 return -ENODEV; 639 } 640 641 if (hpet_tbl->address.space_id != ACPI_SPACE_MEM) { 642 printk(KERN_WARNING PREFIX "HPET timers must be located in " 643 "memory.\n"); 644 return -1; 645 } 646 647 hpet_address = hpet_tbl->address.address; 648 hpet_blockid = hpet_tbl->sequence; 649 650 /* 651 * Some broken BIOSes advertise HPET at 0x0. We really do not 652 * want to allocate a resource there. 653 */ 654 if (!hpet_address) { 655 printk(KERN_WARNING PREFIX 656 "HPET id: %#x base: %#lx is invalid\n", 657 hpet_tbl->id, hpet_address); 658 return 0; 659 } 660 #ifdef CONFIG_X86_64 661 /* 662 * Some even more broken BIOSes advertise HPET at 663 * 0xfed0000000000000 instead of 0xfed00000. Fix it up and add 664 * some noise: 665 */ 666 if (hpet_address == 0xfed0000000000000UL) { 667 if (!hpet_force_user) { 668 printk(KERN_WARNING PREFIX "HPET id: %#x " 669 "base: 0xfed0000000000000 is bogus\n " 670 "try hpet=force on the kernel command line to " 671 "fix it up to 0xfed00000.\n", hpet_tbl->id); 672 hpet_address = 0; 673 return 0; 674 } 675 printk(KERN_WARNING PREFIX 676 "HPET id: %#x base: 0xfed0000000000000 fixed up " 677 "to 0xfed00000.\n", hpet_tbl->id); 678 hpet_address >>= 32; 679 } 680 #endif 681 printk(KERN_INFO PREFIX "HPET id: %#x base: %#lx\n", 682 hpet_tbl->id, hpet_address); 683 684 /* 685 * Allocate and initialize the HPET firmware resource for adding into 686 * the resource tree during the lateinit timeframe. 687 */ 688 #define HPET_RESOURCE_NAME_SIZE 9 689 hpet_res = alloc_bootmem(sizeof(*hpet_res) + HPET_RESOURCE_NAME_SIZE); 690 691 hpet_res->name = (void *)&hpet_res[1]; 692 hpet_res->flags = IORESOURCE_MEM; 693 snprintf((char *)hpet_res->name, HPET_RESOURCE_NAME_SIZE, "HPET %u", 694 hpet_tbl->sequence); 695 696 hpet_res->start = hpet_address; 697 hpet_res->end = hpet_address + (1 * 1024) - 1; 698 699 return 0; 700 } 701 702 /* 703 * hpet_insert_resource inserts the HPET resources used into the resource 704 * tree. 705 */ 706 static __init int hpet_insert_resource(void) 707 { 708 if (!hpet_res) 709 return 1; 710 711 return insert_resource(&iomem_resource, hpet_res); 712 } 713 714 late_initcall(hpet_insert_resource); 715 716 #else 717 #define acpi_parse_hpet NULL 718 #endif 719 720 static int __init acpi_parse_fadt(struct acpi_table_header *table) 721 { 722 723 #ifdef CONFIG_X86_PM_TIMER 724 /* detect the location of the ACPI PM Timer */ 725 if (acpi_gbl_FADT.header.revision >= FADT2_REVISION_ID) { 726 /* FADT rev. 2 */ 727 if (acpi_gbl_FADT.xpm_timer_block.space_id != 728 ACPI_ADR_SPACE_SYSTEM_IO) 729 return 0; 730 731 pmtmr_ioport = acpi_gbl_FADT.xpm_timer_block.address; 732 /* 733 * "X" fields are optional extensions to the original V1.0 734 * fields, so we must selectively expand V1.0 fields if the 735 * corresponding X field is zero. 736 */ 737 if (!pmtmr_ioport) 738 pmtmr_ioport = acpi_gbl_FADT.pm_timer_block; 739 } else { 740 /* FADT rev. 1 */ 741 pmtmr_ioport = acpi_gbl_FADT.pm_timer_block; 742 } 743 if (pmtmr_ioport) 744 printk(KERN_INFO PREFIX "PM-Timer IO Port: %#x\n", 745 pmtmr_ioport); 746 #endif 747 return 0; 748 } 749 750 #ifdef CONFIG_X86_LOCAL_APIC 751 /* 752 * Parse LAPIC entries in MADT 753 * returns 0 on success, < 0 on error 754 */ 755 756 static void __init acpi_register_lapic_address(unsigned long address) 757 { 758 mp_lapic_addr = address; 759 760 set_fixmap_nocache(FIX_APIC_BASE, address); 761 if (boot_cpu_physical_apicid == -1U) { 762 boot_cpu_physical_apicid = read_apic_id(); 763 apic_version[boot_cpu_physical_apicid] = 764 GET_APIC_VERSION(apic_read(APIC_LVR)); 765 } 766 } 767 768 static int __init early_acpi_parse_madt_lapic_addr_ovr(void) 769 { 770 int count; 771 772 if (!cpu_has_apic) 773 return -ENODEV; 774 775 /* 776 * Note that the LAPIC address is obtained from the MADT (32-bit value) 777 * and (optionally) overriden by a LAPIC_ADDR_OVR entry (64-bit value). 778 */ 779 780 count = 781 acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE, 782 acpi_parse_lapic_addr_ovr, 0); 783 if (count < 0) { 784 printk(KERN_ERR PREFIX 785 "Error parsing LAPIC address override entry\n"); 786 return count; 787 } 788 789 acpi_register_lapic_address(acpi_lapic_addr); 790 791 return count; 792 } 793 794 static int __init acpi_parse_madt_lapic_entries(void) 795 { 796 int count; 797 int x2count = 0; 798 799 if (!cpu_has_apic) 800 return -ENODEV; 801 802 /* 803 * Note that the LAPIC address is obtained from the MADT (32-bit value) 804 * and (optionally) overriden by a LAPIC_ADDR_OVR entry (64-bit value). 805 */ 806 807 count = 808 acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE, 809 acpi_parse_lapic_addr_ovr, 0); 810 if (count < 0) { 811 printk(KERN_ERR PREFIX 812 "Error parsing LAPIC address override entry\n"); 813 return count; 814 } 815 816 acpi_register_lapic_address(acpi_lapic_addr); 817 818 count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_SAPIC, 819 acpi_parse_sapic, MAX_APICS); 820 821 if (!count) { 822 x2count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_X2APIC, 823 acpi_parse_x2apic, MAX_APICS); 824 count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC, 825 acpi_parse_lapic, MAX_APICS); 826 } 827 if (!count && !x2count) { 828 printk(KERN_ERR PREFIX "No LAPIC entries present\n"); 829 /* TBD: Cleanup to allow fallback to MPS */ 830 return -ENODEV; 831 } else if (count < 0 || x2count < 0) { 832 printk(KERN_ERR PREFIX "Error parsing LAPIC entry\n"); 833 /* TBD: Cleanup to allow fallback to MPS */ 834 return count; 835 } 836 837 x2count = 838 acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_X2APIC_NMI, 839 acpi_parse_x2apic_nmi, 0); 840 count = 841 acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_NMI, acpi_parse_lapic_nmi, 0); 842 if (count < 0 || x2count < 0) { 843 printk(KERN_ERR PREFIX "Error parsing LAPIC NMI entry\n"); 844 /* TBD: Cleanup to allow fallback to MPS */ 845 return count; 846 } 847 return 0; 848 } 849 #endif /* CONFIG_X86_LOCAL_APIC */ 850 851 #ifdef CONFIG_X86_IO_APIC 852 #define MP_ISA_BUS 0 853 854 #ifdef CONFIG_X86_ES7000 855 extern int es7000_plat; 856 #endif 857 858 int __init acpi_probe_gsi(void) 859 { 860 int idx; 861 int gsi; 862 int max_gsi = 0; 863 864 if (acpi_disabled) 865 return 0; 866 867 if (!acpi_ioapic) 868 return 0; 869 870 max_gsi = 0; 871 for (idx = 0; idx < nr_ioapics; idx++) { 872 gsi = mp_gsi_routing[idx].gsi_end; 873 874 if (gsi > max_gsi) 875 max_gsi = gsi; 876 } 877 878 return max_gsi + 1; 879 } 880 881 static void assign_to_mp_irq(struct mpc_intsrc *m, 882 struct mpc_intsrc *mp_irq) 883 { 884 memcpy(mp_irq, m, sizeof(struct mpc_intsrc)); 885 } 886 887 static int mp_irq_cmp(struct mpc_intsrc *mp_irq, 888 struct mpc_intsrc *m) 889 { 890 return memcmp(mp_irq, m, sizeof(struct mpc_intsrc)); 891 } 892 893 static void save_mp_irq(struct mpc_intsrc *m) 894 { 895 int i; 896 897 for (i = 0; i < mp_irq_entries; i++) { 898 if (!mp_irq_cmp(&mp_irqs[i], m)) 899 return; 900 } 901 902 assign_to_mp_irq(m, &mp_irqs[mp_irq_entries]); 903 if (++mp_irq_entries == MAX_IRQ_SOURCES) 904 panic("Max # of irq sources exceeded!!\n"); 905 } 906 907 void __init mp_override_legacy_irq(u8 bus_irq, u8 polarity, u8 trigger, u32 gsi) 908 { 909 int ioapic; 910 int pin; 911 struct mpc_intsrc mp_irq; 912 913 /* 914 * Convert 'gsi' to 'ioapic.pin'. 915 */ 916 ioapic = mp_find_ioapic(gsi); 917 if (ioapic < 0) 918 return; 919 pin = mp_find_ioapic_pin(ioapic, gsi); 920 921 /* 922 * TBD: This check is for faulty timer entries, where the override 923 * erroneously sets the trigger to level, resulting in a HUGE 924 * increase of timer interrupts! 925 */ 926 if ((bus_irq == 0) && (trigger == 3)) 927 trigger = 1; 928 929 mp_irq.type = MP_INTSRC; 930 mp_irq.irqtype = mp_INT; 931 mp_irq.irqflag = (trigger << 2) | polarity; 932 mp_irq.srcbus = MP_ISA_BUS; 933 mp_irq.srcbusirq = bus_irq; /* IRQ */ 934 mp_irq.dstapic = mp_ioapics[ioapic].apicid; /* APIC ID */ 935 mp_irq.dstirq = pin; /* INTIN# */ 936 937 save_mp_irq(&mp_irq); 938 } 939 940 void __init mp_config_acpi_legacy_irqs(void) 941 { 942 int i; 943 int ioapic; 944 unsigned int dstapic; 945 struct mpc_intsrc mp_irq; 946 947 #if defined (CONFIG_MCA) || defined (CONFIG_EISA) 948 /* 949 * Fabricate the legacy ISA bus (bus #31). 950 */ 951 mp_bus_id_to_type[MP_ISA_BUS] = MP_BUS_ISA; 952 #endif 953 set_bit(MP_ISA_BUS, mp_bus_not_pci); 954 pr_debug("Bus #%d is ISA\n", MP_ISA_BUS); 955 956 #ifdef CONFIG_X86_ES7000 957 /* 958 * Older generations of ES7000 have no legacy identity mappings 959 */ 960 if (es7000_plat == 1) 961 return; 962 #endif 963 964 /* 965 * Locate the IOAPIC that manages the ISA IRQs (0-15). 966 */ 967 ioapic = mp_find_ioapic(0); 968 if (ioapic < 0) 969 return; 970 dstapic = mp_ioapics[ioapic].apicid; 971 972 /* 973 * Use the default configuration for the IRQs 0-15. Unless 974 * overridden by (MADT) interrupt source override entries. 975 */ 976 for (i = 0; i < 16; i++) { 977 int idx; 978 979 for (idx = 0; idx < mp_irq_entries; idx++) { 980 struct mpc_intsrc *irq = mp_irqs + idx; 981 982 /* Do we already have a mapping for this ISA IRQ? */ 983 if (irq->srcbus == MP_ISA_BUS && irq->srcbusirq == i) 984 break; 985 986 /* Do we already have a mapping for this IOAPIC pin */ 987 if (irq->dstapic == dstapic && irq->dstirq == i) 988 break; 989 } 990 991 if (idx != mp_irq_entries) { 992 printk(KERN_DEBUG "ACPI: IRQ%d used by override.\n", i); 993 continue; /* IRQ already used */ 994 } 995 996 mp_irq.type = MP_INTSRC; 997 mp_irq.irqflag = 0; /* Conforming */ 998 mp_irq.srcbus = MP_ISA_BUS; 999 mp_irq.dstapic = dstapic; 1000 mp_irq.irqtype = mp_INT; 1001 mp_irq.srcbusirq = i; /* Identity mapped */ 1002 mp_irq.dstirq = i; 1003 1004 save_mp_irq(&mp_irq); 1005 } 1006 } 1007 1008 static int mp_config_acpi_gsi(struct device *dev, u32 gsi, int trigger, 1009 int polarity) 1010 { 1011 #ifdef CONFIG_X86_MPPARSE 1012 struct mpc_intsrc mp_irq; 1013 struct pci_dev *pdev; 1014 unsigned char number; 1015 unsigned int devfn; 1016 int ioapic; 1017 u8 pin; 1018 1019 if (!acpi_ioapic) 1020 return 0; 1021 if (!dev) 1022 return 0; 1023 if (dev->bus != &pci_bus_type) 1024 return 0; 1025 1026 pdev = to_pci_dev(dev); 1027 number = pdev->bus->number; 1028 devfn = pdev->devfn; 1029 pin = pdev->pin; 1030 /* print the entry should happen on mptable identically */ 1031 mp_irq.type = MP_INTSRC; 1032 mp_irq.irqtype = mp_INT; 1033 mp_irq.irqflag = (trigger == ACPI_EDGE_SENSITIVE ? 4 : 0x0c) | 1034 (polarity == ACPI_ACTIVE_HIGH ? 1 : 3); 1035 mp_irq.srcbus = number; 1036 mp_irq.srcbusirq = (((devfn >> 3) & 0x1f) << 2) | ((pin - 1) & 3); 1037 ioapic = mp_find_ioapic(gsi); 1038 mp_irq.dstapic = mp_ioapics[ioapic].apicid; 1039 mp_irq.dstirq = mp_find_ioapic_pin(ioapic, gsi); 1040 1041 save_mp_irq(&mp_irq); 1042 #endif 1043 return 0; 1044 } 1045 1046 int mp_register_gsi(struct device *dev, u32 gsi, int trigger, int polarity) 1047 { 1048 int ioapic; 1049 int ioapic_pin; 1050 struct io_apic_irq_attr irq_attr; 1051 1052 if (acpi_irq_model != ACPI_IRQ_MODEL_IOAPIC) 1053 return gsi; 1054 1055 /* Don't set up the ACPI SCI because it's already set up */ 1056 if (acpi_gbl_FADT.sci_interrupt == gsi) 1057 return gsi; 1058 1059 ioapic = mp_find_ioapic(gsi); 1060 if (ioapic < 0) { 1061 printk(KERN_WARNING "No IOAPIC for GSI %u\n", gsi); 1062 return gsi; 1063 } 1064 1065 ioapic_pin = mp_find_ioapic_pin(ioapic, gsi); 1066 1067 #ifdef CONFIG_X86_32 1068 if (ioapic_renumber_irq) 1069 gsi = ioapic_renumber_irq(ioapic, gsi); 1070 #endif 1071 1072 if (ioapic_pin > MP_MAX_IOAPIC_PIN) { 1073 printk(KERN_ERR "Invalid reference to IOAPIC pin " 1074 "%d-%d\n", mp_ioapics[ioapic].apicid, 1075 ioapic_pin); 1076 return gsi; 1077 } 1078 1079 if (enable_update_mptable) 1080 mp_config_acpi_gsi(dev, gsi, trigger, polarity); 1081 1082 set_io_apic_irq_attr(&irq_attr, ioapic, ioapic_pin, 1083 trigger == ACPI_EDGE_SENSITIVE ? 0 : 1, 1084 polarity == ACPI_ACTIVE_HIGH ? 0 : 1); 1085 io_apic_set_pci_routing(dev, gsi, &irq_attr); 1086 1087 return gsi; 1088 } 1089 1090 /* 1091 * Parse IOAPIC related entries in MADT 1092 * returns 0 on success, < 0 on error 1093 */ 1094 static int __init acpi_parse_madt_ioapic_entries(void) 1095 { 1096 int count; 1097 1098 /* 1099 * ACPI interpreter is required to complete interrupt setup, 1100 * so if it is off, don't enumerate the io-apics with ACPI. 1101 * If MPS is present, it will handle them, 1102 * otherwise the system will stay in PIC mode 1103 */ 1104 if (acpi_disabled || acpi_noirq) 1105 return -ENODEV; 1106 1107 if (!cpu_has_apic) 1108 return -ENODEV; 1109 1110 /* 1111 * if "noapic" boot option, don't look for IO-APICs 1112 */ 1113 if (skip_ioapic_setup) { 1114 printk(KERN_INFO PREFIX "Skipping IOAPIC probe " 1115 "due to 'noapic' option.\n"); 1116 return -ENODEV; 1117 } 1118 1119 count = 1120 acpi_table_parse_madt(ACPI_MADT_TYPE_IO_APIC, acpi_parse_ioapic, 1121 MAX_IO_APICS); 1122 if (!count) { 1123 printk(KERN_ERR PREFIX "No IOAPIC entries present\n"); 1124 return -ENODEV; 1125 } else if (count < 0) { 1126 printk(KERN_ERR PREFIX "Error parsing IOAPIC entry\n"); 1127 return count; 1128 } 1129 1130 count = 1131 acpi_table_parse_madt(ACPI_MADT_TYPE_INTERRUPT_OVERRIDE, acpi_parse_int_src_ovr, 1132 nr_irqs); 1133 if (count < 0) { 1134 printk(KERN_ERR PREFIX 1135 "Error parsing interrupt source overrides entry\n"); 1136 /* TBD: Cleanup to allow fallback to MPS */ 1137 return count; 1138 } 1139 1140 /* 1141 * If BIOS did not supply an INT_SRC_OVR for the SCI 1142 * pretend we got one so we can set the SCI flags. 1143 */ 1144 if (!acpi_sci_override_gsi) 1145 acpi_sci_ioapic_setup(acpi_gbl_FADT.sci_interrupt, 0, 0); 1146 1147 /* Fill in identity legacy mappings where no override */ 1148 mp_config_acpi_legacy_irqs(); 1149 1150 count = 1151 acpi_table_parse_madt(ACPI_MADT_TYPE_NMI_SOURCE, acpi_parse_nmi_src, 1152 nr_irqs); 1153 if (count < 0) { 1154 printk(KERN_ERR PREFIX "Error parsing NMI SRC entry\n"); 1155 /* TBD: Cleanup to allow fallback to MPS */ 1156 return count; 1157 } 1158 1159 return 0; 1160 } 1161 #else 1162 static inline int acpi_parse_madt_ioapic_entries(void) 1163 { 1164 return -1; 1165 } 1166 #endif /* !CONFIG_X86_IO_APIC */ 1167 1168 static void __init early_acpi_process_madt(void) 1169 { 1170 #ifdef CONFIG_X86_LOCAL_APIC 1171 int error; 1172 1173 if (!acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) { 1174 1175 /* 1176 * Parse MADT LAPIC entries 1177 */ 1178 error = early_acpi_parse_madt_lapic_addr_ovr(); 1179 if (!error) { 1180 acpi_lapic = 1; 1181 smp_found_config = 1; 1182 } 1183 if (error == -EINVAL) { 1184 /* 1185 * Dell Precision Workstation 410, 610 come here. 1186 */ 1187 printk(KERN_ERR PREFIX 1188 "Invalid BIOS MADT, disabling ACPI\n"); 1189 disable_acpi(); 1190 } 1191 } 1192 #endif 1193 } 1194 1195 static void __init acpi_process_madt(void) 1196 { 1197 #ifdef CONFIG_X86_LOCAL_APIC 1198 int error; 1199 1200 if (!acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) { 1201 1202 /* 1203 * Parse MADT LAPIC entries 1204 */ 1205 error = acpi_parse_madt_lapic_entries(); 1206 if (!error) { 1207 acpi_lapic = 1; 1208 1209 /* 1210 * Parse MADT IO-APIC entries 1211 */ 1212 error = acpi_parse_madt_ioapic_entries(); 1213 if (!error) { 1214 acpi_irq_model = ACPI_IRQ_MODEL_IOAPIC; 1215 acpi_ioapic = 1; 1216 1217 smp_found_config = 1; 1218 } 1219 } 1220 if (error == -EINVAL) { 1221 /* 1222 * Dell Precision Workstation 410, 610 come here. 1223 */ 1224 printk(KERN_ERR PREFIX 1225 "Invalid BIOS MADT, disabling ACPI\n"); 1226 disable_acpi(); 1227 } 1228 } else { 1229 /* 1230 * ACPI found no MADT, and so ACPI wants UP PIC mode. 1231 * In the event an MPS table was found, forget it. 1232 * Boot with "acpi=off" to use MPS on such a system. 1233 */ 1234 if (smp_found_config) { 1235 printk(KERN_WARNING PREFIX 1236 "No APIC-table, disabling MPS\n"); 1237 smp_found_config = 0; 1238 } 1239 } 1240 1241 /* 1242 * ACPI supports both logical (e.g. Hyper-Threading) and physical 1243 * processors, where MPS only supports physical. 1244 */ 1245 if (acpi_lapic && acpi_ioapic) 1246 printk(KERN_INFO "Using ACPI (MADT) for SMP configuration " 1247 "information\n"); 1248 else if (acpi_lapic) 1249 printk(KERN_INFO "Using ACPI for processor (LAPIC) " 1250 "configuration information\n"); 1251 #endif 1252 return; 1253 } 1254 1255 static int __init disable_acpi_irq(const struct dmi_system_id *d) 1256 { 1257 if (!acpi_force) { 1258 printk(KERN_NOTICE "%s detected: force use of acpi=noirq\n", 1259 d->ident); 1260 acpi_noirq_set(); 1261 } 1262 return 0; 1263 } 1264 1265 static int __init disable_acpi_pci(const struct dmi_system_id *d) 1266 { 1267 if (!acpi_force) { 1268 printk(KERN_NOTICE "%s detected: force use of pci=noacpi\n", 1269 d->ident); 1270 acpi_disable_pci(); 1271 } 1272 return 0; 1273 } 1274 1275 static int __init dmi_disable_acpi(const struct dmi_system_id *d) 1276 { 1277 if (!acpi_force) { 1278 printk(KERN_NOTICE "%s detected: acpi off\n", d->ident); 1279 disable_acpi(); 1280 } else { 1281 printk(KERN_NOTICE 1282 "Warning: DMI blacklist says broken, but acpi forced\n"); 1283 } 1284 return 0; 1285 } 1286 1287 /* 1288 * Limit ACPI to CPU enumeration for HT 1289 */ 1290 static int __init force_acpi_ht(const struct dmi_system_id *d) 1291 { 1292 if (!acpi_force) { 1293 printk(KERN_NOTICE "%s detected: force use of acpi=ht\n", 1294 d->ident); 1295 disable_acpi(); 1296 acpi_ht = 1; 1297 } else { 1298 printk(KERN_NOTICE 1299 "Warning: acpi=force overrules DMI blacklist: acpi=ht\n"); 1300 } 1301 return 0; 1302 } 1303 1304 /* 1305 * Force ignoring BIOS IRQ0 pin2 override 1306 */ 1307 static int __init dmi_ignore_irq0_timer_override(const struct dmi_system_id *d) 1308 { 1309 /* 1310 * The ati_ixp4x0_rev() early PCI quirk should have set 1311 * the acpi_skip_timer_override flag already: 1312 */ 1313 if (!acpi_skip_timer_override) { 1314 WARN(1, KERN_ERR "ati_ixp4x0 quirk not complete.\n"); 1315 pr_notice("%s detected: Ignoring BIOS IRQ0 pin2 override\n", 1316 d->ident); 1317 acpi_skip_timer_override = 1; 1318 } 1319 return 0; 1320 } 1321 1322 /* 1323 * If your system is blacklisted here, but you find that acpi=force 1324 * works for you, please contact linux-acpi@vger.kernel.org 1325 */ 1326 static struct dmi_system_id __initdata acpi_dmi_table[] = { 1327 /* 1328 * Boxes that need ACPI disabled 1329 */ 1330 { 1331 .callback = dmi_disable_acpi, 1332 .ident = "IBM Thinkpad", 1333 .matches = { 1334 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), 1335 DMI_MATCH(DMI_BOARD_NAME, "2629H1G"), 1336 }, 1337 }, 1338 1339 /* 1340 * Boxes that need acpi=ht 1341 */ 1342 { 1343 .callback = force_acpi_ht, 1344 .ident = "FSC Primergy T850", 1345 .matches = { 1346 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"), 1347 DMI_MATCH(DMI_PRODUCT_NAME, "PRIMERGY T850"), 1348 }, 1349 }, 1350 { 1351 .callback = force_acpi_ht, 1352 .ident = "HP VISUALIZE NT Workstation", 1353 .matches = { 1354 DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"), 1355 DMI_MATCH(DMI_PRODUCT_NAME, "HP VISUALIZE NT Workstation"), 1356 }, 1357 }, 1358 { 1359 .callback = force_acpi_ht, 1360 .ident = "Compaq Workstation W8000", 1361 .matches = { 1362 DMI_MATCH(DMI_SYS_VENDOR, "Compaq"), 1363 DMI_MATCH(DMI_PRODUCT_NAME, "Workstation W8000"), 1364 }, 1365 }, 1366 { 1367 .callback = force_acpi_ht, 1368 .ident = "ASUS CUR-DLS", 1369 .matches = { 1370 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."), 1371 DMI_MATCH(DMI_BOARD_NAME, "CUR-DLS"), 1372 }, 1373 }, 1374 { 1375 .callback = force_acpi_ht, 1376 .ident = "ABIT i440BX-W83977", 1377 .matches = { 1378 DMI_MATCH(DMI_BOARD_VENDOR, "ABIT <http://www.abit.com>"), 1379 DMI_MATCH(DMI_BOARD_NAME, "i440BX-W83977 (BP6)"), 1380 }, 1381 }, 1382 { 1383 .callback = force_acpi_ht, 1384 .ident = "IBM Bladecenter", 1385 .matches = { 1386 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), 1387 DMI_MATCH(DMI_BOARD_NAME, "IBM eServer BladeCenter HS20"), 1388 }, 1389 }, 1390 { 1391 .callback = force_acpi_ht, 1392 .ident = "IBM eServer xSeries 360", 1393 .matches = { 1394 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), 1395 DMI_MATCH(DMI_BOARD_NAME, "eServer xSeries 360"), 1396 }, 1397 }, 1398 { 1399 .callback = force_acpi_ht, 1400 .ident = "IBM eserver xSeries 330", 1401 .matches = { 1402 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), 1403 DMI_MATCH(DMI_BOARD_NAME, "eserver xSeries 330"), 1404 }, 1405 }, 1406 { 1407 .callback = force_acpi_ht, 1408 .ident = "IBM eserver xSeries 440", 1409 .matches = { 1410 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), 1411 DMI_MATCH(DMI_PRODUCT_NAME, "eserver xSeries 440"), 1412 }, 1413 }, 1414 1415 /* 1416 * Boxes that need ACPI PCI IRQ routing disabled 1417 */ 1418 { 1419 .callback = disable_acpi_irq, 1420 .ident = "ASUS A7V", 1421 .matches = { 1422 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC"), 1423 DMI_MATCH(DMI_BOARD_NAME, "<A7V>"), 1424 /* newer BIOS, Revision 1011, does work */ 1425 DMI_MATCH(DMI_BIOS_VERSION, 1426 "ASUS A7V ACPI BIOS Revision 1007"), 1427 }, 1428 }, 1429 { 1430 /* 1431 * Latest BIOS for IBM 600E (1.16) has bad pcinum 1432 * for LPC bridge, which is needed for the PCI 1433 * interrupt links to work. DSDT fix is in bug 5966. 1434 * 2645, 2646 model numbers are shared with 600/600E/600X 1435 */ 1436 .callback = disable_acpi_irq, 1437 .ident = "IBM Thinkpad 600 Series 2645", 1438 .matches = { 1439 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), 1440 DMI_MATCH(DMI_BOARD_NAME, "2645"), 1441 }, 1442 }, 1443 { 1444 .callback = disable_acpi_irq, 1445 .ident = "IBM Thinkpad 600 Series 2646", 1446 .matches = { 1447 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), 1448 DMI_MATCH(DMI_BOARD_NAME, "2646"), 1449 }, 1450 }, 1451 /* 1452 * Boxes that need ACPI PCI IRQ routing and PCI scan disabled 1453 */ 1454 { /* _BBN 0 bug */ 1455 .callback = disable_acpi_pci, 1456 .ident = "ASUS PR-DLS", 1457 .matches = { 1458 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."), 1459 DMI_MATCH(DMI_BOARD_NAME, "PR-DLS"), 1460 DMI_MATCH(DMI_BIOS_VERSION, 1461 "ASUS PR-DLS ACPI BIOS Revision 1010"), 1462 DMI_MATCH(DMI_BIOS_DATE, "03/21/2003") 1463 }, 1464 }, 1465 { 1466 .callback = disable_acpi_pci, 1467 .ident = "Acer TravelMate 36x Laptop", 1468 .matches = { 1469 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 1470 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 360"), 1471 }, 1472 }, 1473 {} 1474 }; 1475 1476 /* second table for DMI checks that should run after early-quirks */ 1477 static struct dmi_system_id __initdata acpi_dmi_table_late[] = { 1478 /* 1479 * HP laptops which use a DSDT reporting as HP/SB400/10000, 1480 * which includes some code which overrides all temperature 1481 * trip points to 16C if the INTIN2 input of the I/O APIC 1482 * is enabled. This input is incorrectly designated the 1483 * ISA IRQ 0 via an interrupt source override even though 1484 * it is wired to the output of the master 8259A and INTIN0 1485 * is not connected at all. Force ignoring BIOS IRQ0 pin2 1486 * override in that cases. 1487 */ 1488 { 1489 .callback = dmi_ignore_irq0_timer_override, 1490 .ident = "HP nx6115 laptop", 1491 .matches = { 1492 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), 1493 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6115"), 1494 }, 1495 }, 1496 { 1497 .callback = dmi_ignore_irq0_timer_override, 1498 .ident = "HP NX6125 laptop", 1499 .matches = { 1500 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), 1501 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6125"), 1502 }, 1503 }, 1504 { 1505 .callback = dmi_ignore_irq0_timer_override, 1506 .ident = "HP NX6325 laptop", 1507 .matches = { 1508 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), 1509 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6325"), 1510 }, 1511 }, 1512 { 1513 .callback = dmi_ignore_irq0_timer_override, 1514 .ident = "HP 6715b laptop", 1515 .matches = { 1516 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), 1517 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq 6715b"), 1518 }, 1519 }, 1520 {} 1521 }; 1522 1523 /* 1524 * acpi_boot_table_init() and acpi_boot_init() 1525 * called from setup_arch(), always. 1526 * 1. checksums all tables 1527 * 2. enumerates lapics 1528 * 3. enumerates io-apics 1529 * 1530 * acpi_table_init() is separate to allow reading SRAT without 1531 * other side effects. 1532 * 1533 * side effects of acpi_boot_init: 1534 * acpi_lapic = 1 if LAPIC found 1535 * acpi_ioapic = 1 if IOAPIC found 1536 * if (acpi_lapic && acpi_ioapic) smp_found_config = 1; 1537 * if acpi_blacklisted() acpi_disabled = 1; 1538 * acpi_irq_model=... 1539 * ... 1540 */ 1541 1542 void __init acpi_boot_table_init(void) 1543 { 1544 dmi_check_system(acpi_dmi_table); 1545 1546 /* 1547 * If acpi_disabled, bail out 1548 * One exception: acpi=ht continues far enough to enumerate LAPICs 1549 */ 1550 if (acpi_disabled && !acpi_ht) 1551 return; 1552 1553 /* 1554 * Initialize the ACPI boot-time table parser. 1555 */ 1556 if (acpi_table_init()) { 1557 disable_acpi(); 1558 return; 1559 } 1560 1561 acpi_table_parse(ACPI_SIG_BOOT, acpi_parse_sbf); 1562 1563 /* 1564 * blacklist may disable ACPI entirely 1565 */ 1566 if (acpi_blacklisted()) { 1567 if (acpi_force) { 1568 printk(KERN_WARNING PREFIX "acpi=force override\n"); 1569 } else { 1570 printk(KERN_WARNING PREFIX "Disabling ACPI support\n"); 1571 disable_acpi(); 1572 return; 1573 } 1574 } 1575 } 1576 1577 int __init early_acpi_boot_init(void) 1578 { 1579 /* 1580 * If acpi_disabled, bail out 1581 * One exception: acpi=ht continues far enough to enumerate LAPICs 1582 */ 1583 if (acpi_disabled && !acpi_ht) 1584 return 1; 1585 1586 /* 1587 * Process the Multiple APIC Description Table (MADT), if present 1588 */ 1589 early_acpi_process_madt(); 1590 1591 return 0; 1592 } 1593 1594 int __init acpi_boot_init(void) 1595 { 1596 /* those are executed after early-quirks are executed */ 1597 dmi_check_system(acpi_dmi_table_late); 1598 1599 /* 1600 * If acpi_disabled, bail out 1601 * One exception: acpi=ht continues far enough to enumerate LAPICs 1602 */ 1603 if (acpi_disabled && !acpi_ht) 1604 return 1; 1605 1606 acpi_table_parse(ACPI_SIG_BOOT, acpi_parse_sbf); 1607 1608 /* 1609 * set sci_int and PM timer address 1610 */ 1611 acpi_table_parse(ACPI_SIG_FADT, acpi_parse_fadt); 1612 1613 /* 1614 * Process the Multiple APIC Description Table (MADT), if present 1615 */ 1616 acpi_process_madt(); 1617 1618 acpi_table_parse(ACPI_SIG_HPET, acpi_parse_hpet); 1619 1620 return 0; 1621 } 1622 1623 static int __init parse_acpi(char *arg) 1624 { 1625 if (!arg) 1626 return -EINVAL; 1627 1628 /* "acpi=off" disables both ACPI table parsing and interpreter */ 1629 if (strcmp(arg, "off") == 0) { 1630 disable_acpi(); 1631 } 1632 /* acpi=force to over-ride black-list */ 1633 else if (strcmp(arg, "force") == 0) { 1634 acpi_force = 1; 1635 acpi_ht = 1; 1636 acpi_disabled = 0; 1637 } 1638 /* acpi=strict disables out-of-spec workarounds */ 1639 else if (strcmp(arg, "strict") == 0) { 1640 acpi_strict = 1; 1641 } 1642 /* Limit ACPI just to boot-time to enable HT */ 1643 else if (strcmp(arg, "ht") == 0) { 1644 if (!acpi_force) 1645 disable_acpi(); 1646 acpi_ht = 1; 1647 } 1648 /* acpi=rsdt use RSDT instead of XSDT */ 1649 else if (strcmp(arg, "rsdt") == 0) { 1650 acpi_rsdt_forced = 1; 1651 } 1652 /* "acpi=noirq" disables ACPI interrupt routing */ 1653 else if (strcmp(arg, "noirq") == 0) { 1654 acpi_noirq_set(); 1655 } else { 1656 /* Core will printk when we return error. */ 1657 return -EINVAL; 1658 } 1659 return 0; 1660 } 1661 early_param("acpi", parse_acpi); 1662 1663 /* FIXME: Using pci= for an ACPI parameter is a travesty. */ 1664 static int __init parse_pci(char *arg) 1665 { 1666 if (arg && strcmp(arg, "noacpi") == 0) 1667 acpi_disable_pci(); 1668 return 0; 1669 } 1670 early_param("pci", parse_pci); 1671 1672 int __init acpi_mps_check(void) 1673 { 1674 #if defined(CONFIG_X86_LOCAL_APIC) && !defined(CONFIG_X86_MPPARSE) 1675 /* mptable code is not built-in*/ 1676 if (acpi_disabled || acpi_noirq) { 1677 printk(KERN_WARNING "MPS support code is not built-in.\n" 1678 "Using acpi=off or acpi=noirq or pci=noacpi " 1679 "may have problem\n"); 1680 return 1; 1681 } 1682 #endif 1683 return 0; 1684 } 1685 1686 #ifdef CONFIG_X86_IO_APIC 1687 static int __init parse_acpi_skip_timer_override(char *arg) 1688 { 1689 acpi_skip_timer_override = 1; 1690 return 0; 1691 } 1692 early_param("acpi_skip_timer_override", parse_acpi_skip_timer_override); 1693 1694 static int __init parse_acpi_use_timer_override(char *arg) 1695 { 1696 acpi_use_timer_override = 1; 1697 return 0; 1698 } 1699 early_param("acpi_use_timer_override", parse_acpi_use_timer_override); 1700 #endif /* CONFIG_X86_IO_APIC */ 1701 1702 static int __init setup_acpi_sci(char *s) 1703 { 1704 if (!s) 1705 return -EINVAL; 1706 if (!strcmp(s, "edge")) 1707 acpi_sci_flags = ACPI_MADT_TRIGGER_EDGE | 1708 (acpi_sci_flags & ~ACPI_MADT_TRIGGER_MASK); 1709 else if (!strcmp(s, "level")) 1710 acpi_sci_flags = ACPI_MADT_TRIGGER_LEVEL | 1711 (acpi_sci_flags & ~ACPI_MADT_TRIGGER_MASK); 1712 else if (!strcmp(s, "high")) 1713 acpi_sci_flags = ACPI_MADT_POLARITY_ACTIVE_HIGH | 1714 (acpi_sci_flags & ~ACPI_MADT_POLARITY_MASK); 1715 else if (!strcmp(s, "low")) 1716 acpi_sci_flags = ACPI_MADT_POLARITY_ACTIVE_LOW | 1717 (acpi_sci_flags & ~ACPI_MADT_POLARITY_MASK); 1718 else 1719 return -EINVAL; 1720 return 0; 1721 } 1722 early_param("acpi_sci", setup_acpi_sci); 1723 1724 int __acpi_acquire_global_lock(unsigned int *lock) 1725 { 1726 unsigned int old, new, val; 1727 do { 1728 old = *lock; 1729 new = (((old & ~0x3) + 2) + ((old >> 1) & 0x1)); 1730 val = cmpxchg(lock, old, new); 1731 } while (unlikely (val != old)); 1732 return (new < 3) ? -1 : 0; 1733 } 1734 1735 int __acpi_release_global_lock(unsigned int *lock) 1736 { 1737 unsigned int old, new, val; 1738 do { 1739 old = *lock; 1740 new = old & ~0x3; 1741 val = cmpxchg(lock, old, new); 1742 } while (unlikely (val != old)); 1743 return old & 0x1; 1744 } 1745