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 #endif /* X86 */ 53 54 #define BAD_MADT_ENTRY(entry, end) ( \ 55 (!entry) || (unsigned long)entry + sizeof(*entry) > end || \ 56 ((struct acpi_subtable_header *)entry)->length < sizeof(*entry)) 57 58 #define PREFIX "ACPI: " 59 60 int acpi_noirq; /* skip ACPI IRQ initialization */ 61 int acpi_pci_disabled; /* skip ACPI PCI scan and IRQ initialization */ 62 EXPORT_SYMBOL(acpi_pci_disabled); 63 int acpi_ht __initdata = 1; /* enable HT */ 64 65 int acpi_lapic; 66 int acpi_ioapic; 67 int acpi_strict; 68 69 u8 acpi_sci_flags __initdata; 70 int acpi_sci_override_gsi __initdata; 71 int acpi_skip_timer_override __initdata; 72 int acpi_use_timer_override __initdata; 73 74 #ifdef CONFIG_X86_LOCAL_APIC 75 static u64 acpi_lapic_addr __initdata = APIC_DEFAULT_PHYS_BASE; 76 #endif 77 78 #ifndef __HAVE_ARCH_CMPXCHG 79 #warning ACPI uses CMPXCHG, i486 and later hardware 80 #endif 81 82 /* -------------------------------------------------------------------------- 83 Boot-time Configuration 84 -------------------------------------------------------------------------- */ 85 86 /* 87 * The default interrupt routing model is PIC (8259). This gets 88 * overridden if IOAPICs are enumerated (below). 89 */ 90 enum acpi_irq_model_id acpi_irq_model = ACPI_IRQ_MODEL_PIC; 91 92 93 /* 94 * Temporarily use the virtual area starting from FIX_IO_APIC_BASE_END, 95 * to map the target physical address. The problem is that set_fixmap() 96 * provides a single page, and it is possible that the page is not 97 * sufficient. 98 * By using this area, we can map up to MAX_IO_APICS pages temporarily, 99 * i.e. until the next __va_range() call. 100 * 101 * Important Safety Note: The fixed I/O APIC page numbers are *subtracted* 102 * from the fixed base. That's why we start at FIX_IO_APIC_BASE_END and 103 * count idx down while incrementing the phys address. 104 */ 105 char *__init __acpi_map_table(unsigned long phys, unsigned long size) 106 { 107 108 if (!phys || !size) 109 return NULL; 110 111 return early_ioremap(phys, size); 112 } 113 void __init __acpi_unmap_table(char *map, unsigned long size) 114 { 115 if (!map || !size) 116 return; 117 118 early_iounmap(map, size); 119 } 120 121 #ifdef CONFIG_X86_LOCAL_APIC 122 static int __init acpi_parse_madt(struct acpi_table_header *table) 123 { 124 struct acpi_table_madt *madt = NULL; 125 126 if (!cpu_has_apic) 127 return -EINVAL; 128 129 madt = (struct acpi_table_madt *)table; 130 if (!madt) { 131 printk(KERN_WARNING PREFIX "Unable to map MADT\n"); 132 return -ENODEV; 133 } 134 135 if (madt->address) { 136 acpi_lapic_addr = (u64) madt->address; 137 138 printk(KERN_DEBUG PREFIX "Local APIC address 0x%08x\n", 139 madt->address); 140 } 141 142 default_acpi_madt_oem_check(madt->header.oem_id, 143 madt->header.oem_table_id); 144 145 return 0; 146 } 147 148 static void __cpuinit acpi_register_lapic(int id, u8 enabled) 149 { 150 unsigned int ver = 0; 151 152 if (!enabled) { 153 ++disabled_cpus; 154 return; 155 } 156 157 if (boot_cpu_physical_apicid != -1U) 158 ver = apic_version[boot_cpu_physical_apicid]; 159 160 generic_processor_info(id, ver); 161 } 162 163 static int __init 164 acpi_parse_x2apic(struct acpi_subtable_header *header, const unsigned long end) 165 { 166 struct acpi_madt_local_x2apic *processor = NULL; 167 168 processor = (struct acpi_madt_local_x2apic *)header; 169 170 if (BAD_MADT_ENTRY(processor, end)) 171 return -EINVAL; 172 173 acpi_table_print_madt_entry(header); 174 175 #ifdef CONFIG_X86_X2APIC 176 /* 177 * We need to register disabled CPU as well to permit 178 * counting disabled CPUs. This allows us to size 179 * cpus_possible_map more accurately, to permit 180 * to not preallocating memory for all NR_CPUS 181 * when we use CPU hotplug. 182 */ 183 acpi_register_lapic(processor->local_apic_id, /* APIC ID */ 184 processor->lapic_flags & ACPI_MADT_ENABLED); 185 #else 186 printk(KERN_WARNING PREFIX "x2apic entry ignored\n"); 187 #endif 188 189 return 0; 190 } 191 192 static int __init 193 acpi_parse_lapic(struct acpi_subtable_header * header, const unsigned long end) 194 { 195 struct acpi_madt_local_apic *processor = NULL; 196 197 processor = (struct acpi_madt_local_apic *)header; 198 199 if (BAD_MADT_ENTRY(processor, end)) 200 return -EINVAL; 201 202 acpi_table_print_madt_entry(header); 203 204 /* 205 * We need to register disabled CPU as well to permit 206 * counting disabled CPUs. This allows us to size 207 * cpus_possible_map more accurately, to permit 208 * to not preallocating memory for all NR_CPUS 209 * when we use CPU hotplug. 210 */ 211 acpi_register_lapic(processor->id, /* APIC ID */ 212 processor->lapic_flags & ACPI_MADT_ENABLED); 213 214 return 0; 215 } 216 217 static int __init 218 acpi_parse_sapic(struct acpi_subtable_header *header, const unsigned long end) 219 { 220 struct acpi_madt_local_sapic *processor = NULL; 221 222 processor = (struct acpi_madt_local_sapic *)header; 223 224 if (BAD_MADT_ENTRY(processor, end)) 225 return -EINVAL; 226 227 acpi_table_print_madt_entry(header); 228 229 acpi_register_lapic((processor->id << 8) | processor->eid,/* APIC ID */ 230 processor->lapic_flags & ACPI_MADT_ENABLED); 231 232 return 0; 233 } 234 235 static int __init 236 acpi_parse_lapic_addr_ovr(struct acpi_subtable_header * header, 237 const unsigned long end) 238 { 239 struct acpi_madt_local_apic_override *lapic_addr_ovr = NULL; 240 241 lapic_addr_ovr = (struct acpi_madt_local_apic_override *)header; 242 243 if (BAD_MADT_ENTRY(lapic_addr_ovr, end)) 244 return -EINVAL; 245 246 acpi_lapic_addr = lapic_addr_ovr->address; 247 248 return 0; 249 } 250 251 static int __init 252 acpi_parse_x2apic_nmi(struct acpi_subtable_header *header, 253 const unsigned long end) 254 { 255 struct acpi_madt_local_x2apic_nmi *x2apic_nmi = NULL; 256 257 x2apic_nmi = (struct acpi_madt_local_x2apic_nmi *)header; 258 259 if (BAD_MADT_ENTRY(x2apic_nmi, end)) 260 return -EINVAL; 261 262 acpi_table_print_madt_entry(header); 263 264 if (x2apic_nmi->lint != 1) 265 printk(KERN_WARNING PREFIX "NMI not connected to LINT 1!\n"); 266 267 return 0; 268 } 269 270 static int __init 271 acpi_parse_lapic_nmi(struct acpi_subtable_header * header, const unsigned long end) 272 { 273 struct acpi_madt_local_apic_nmi *lapic_nmi = NULL; 274 275 lapic_nmi = (struct acpi_madt_local_apic_nmi *)header; 276 277 if (BAD_MADT_ENTRY(lapic_nmi, end)) 278 return -EINVAL; 279 280 acpi_table_print_madt_entry(header); 281 282 if (lapic_nmi->lint != 1) 283 printk(KERN_WARNING PREFIX "NMI not connected to LINT 1!\n"); 284 285 return 0; 286 } 287 288 #endif /*CONFIG_X86_LOCAL_APIC */ 289 290 #ifdef CONFIG_X86_IO_APIC 291 292 static int __init 293 acpi_parse_ioapic(struct acpi_subtable_header * header, const unsigned long end) 294 { 295 struct acpi_madt_io_apic *ioapic = NULL; 296 297 ioapic = (struct acpi_madt_io_apic *)header; 298 299 if (BAD_MADT_ENTRY(ioapic, end)) 300 return -EINVAL; 301 302 acpi_table_print_madt_entry(header); 303 304 mp_register_ioapic(ioapic->id, 305 ioapic->address, ioapic->global_irq_base); 306 307 return 0; 308 } 309 310 /* 311 * Parse Interrupt Source Override for the ACPI SCI 312 */ 313 static void __init acpi_sci_ioapic_setup(u32 gsi, u16 polarity, u16 trigger) 314 { 315 if (trigger == 0) /* compatible SCI trigger is level */ 316 trigger = 3; 317 318 if (polarity == 0) /* compatible SCI polarity is low */ 319 polarity = 3; 320 321 /* Command-line over-ride via acpi_sci= */ 322 if (acpi_sci_flags & ACPI_MADT_TRIGGER_MASK) 323 trigger = (acpi_sci_flags & ACPI_MADT_TRIGGER_MASK) >> 2; 324 325 if (acpi_sci_flags & ACPI_MADT_POLARITY_MASK) 326 polarity = acpi_sci_flags & ACPI_MADT_POLARITY_MASK; 327 328 /* 329 * mp_config_acpi_legacy_irqs() already setup IRQs < 16 330 * If GSI is < 16, this will update its flags, 331 * else it will create a new mp_irqs[] entry. 332 */ 333 mp_override_legacy_irq(gsi, polarity, trigger, gsi); 334 335 /* 336 * stash over-ride to indicate we've been here 337 * and for later update of acpi_gbl_FADT 338 */ 339 acpi_sci_override_gsi = gsi; 340 return; 341 } 342 343 static int __init 344 acpi_parse_int_src_ovr(struct acpi_subtable_header * header, 345 const unsigned long end) 346 { 347 struct acpi_madt_interrupt_override *intsrc = NULL; 348 349 intsrc = (struct acpi_madt_interrupt_override *)header; 350 351 if (BAD_MADT_ENTRY(intsrc, end)) 352 return -EINVAL; 353 354 acpi_table_print_madt_entry(header); 355 356 if (intsrc->source_irq == acpi_gbl_FADT.sci_interrupt) { 357 acpi_sci_ioapic_setup(intsrc->global_irq, 358 intsrc->inti_flags & ACPI_MADT_POLARITY_MASK, 359 (intsrc->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2); 360 return 0; 361 } 362 363 if (acpi_skip_timer_override && 364 intsrc->source_irq == 0 && intsrc->global_irq == 2) { 365 printk(PREFIX "BIOS IRQ0 pin2 override ignored.\n"); 366 return 0; 367 } 368 369 mp_override_legacy_irq(intsrc->source_irq, 370 intsrc->inti_flags & ACPI_MADT_POLARITY_MASK, 371 (intsrc->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2, 372 intsrc->global_irq); 373 374 return 0; 375 } 376 377 static int __init 378 acpi_parse_nmi_src(struct acpi_subtable_header * header, const unsigned long end) 379 { 380 struct acpi_madt_nmi_source *nmi_src = NULL; 381 382 nmi_src = (struct acpi_madt_nmi_source *)header; 383 384 if (BAD_MADT_ENTRY(nmi_src, end)) 385 return -EINVAL; 386 387 acpi_table_print_madt_entry(header); 388 389 /* TBD: Support nimsrc entries? */ 390 391 return 0; 392 } 393 394 #endif /* CONFIG_X86_IO_APIC */ 395 396 /* 397 * acpi_pic_sci_set_trigger() 398 * 399 * use ELCR to set PIC-mode trigger type for SCI 400 * 401 * If a PIC-mode SCI is not recognized or gives spurious IRQ7's 402 * it may require Edge Trigger -- use "acpi_sci=edge" 403 * 404 * Port 0x4d0-4d1 are ECLR1 and ECLR2, the Edge/Level Control Registers 405 * for the 8259 PIC. bit[n] = 1 means irq[n] is Level, otherwise Edge. 406 * ECLR1 is IRQs 0-7 (IRQ 0, 1, 2 must be 0) 407 * ECLR2 is IRQs 8-15 (IRQ 8, 13 must be 0) 408 */ 409 410 void __init acpi_pic_sci_set_trigger(unsigned int irq, u16 trigger) 411 { 412 unsigned int mask = 1 << irq; 413 unsigned int old, new; 414 415 /* Real old ELCR mask */ 416 old = inb(0x4d0) | (inb(0x4d1) << 8); 417 418 /* 419 * If we use ACPI to set PCI IRQs, then we should clear ELCR 420 * since we will set it correctly as we enable the PCI irq 421 * routing. 422 */ 423 new = acpi_noirq ? old : 0; 424 425 /* 426 * Update SCI information in the ELCR, it isn't in the PCI 427 * routing tables.. 428 */ 429 switch (trigger) { 430 case 1: /* Edge - clear */ 431 new &= ~mask; 432 break; 433 case 3: /* Level - set */ 434 new |= mask; 435 break; 436 } 437 438 if (old == new) 439 return; 440 441 printk(PREFIX "setting ELCR to %04x (from %04x)\n", new, old); 442 outb(new, 0x4d0); 443 outb(new >> 8, 0x4d1); 444 } 445 446 int acpi_gsi_to_irq(u32 gsi, unsigned int *irq) 447 { 448 *irq = gsi; 449 return 0; 450 } 451 452 /* 453 * success: return IRQ number (>=0) 454 * failure: return < 0 455 */ 456 int acpi_register_gsi(struct device *dev, u32 gsi, int trigger, int polarity) 457 { 458 unsigned int irq; 459 unsigned int plat_gsi = gsi; 460 461 #ifdef CONFIG_PCI 462 /* 463 * Make sure all (legacy) PCI IRQs are set as level-triggered. 464 */ 465 if (acpi_irq_model == ACPI_IRQ_MODEL_PIC) { 466 if (trigger == ACPI_LEVEL_SENSITIVE) 467 eisa_set_level_irq(gsi); 468 } 469 #endif 470 471 #ifdef CONFIG_X86_IO_APIC 472 if (acpi_irq_model == ACPI_IRQ_MODEL_IOAPIC) { 473 plat_gsi = mp_register_gsi(dev, gsi, trigger, polarity); 474 } 475 #endif 476 acpi_gsi_to_irq(plat_gsi, &irq); 477 return irq; 478 } 479 480 /* 481 * ACPI based hotplug support for CPU 482 */ 483 #ifdef CONFIG_ACPI_HOTPLUG_CPU 484 485 static int __cpuinit _acpi_map_lsapic(acpi_handle handle, int *pcpu) 486 { 487 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; 488 union acpi_object *obj; 489 struct acpi_madt_local_apic *lapic; 490 cpumask_var_t tmp_map, new_map; 491 u8 physid; 492 int cpu; 493 int retval = -ENOMEM; 494 495 if (ACPI_FAILURE(acpi_evaluate_object(handle, "_MAT", NULL, &buffer))) 496 return -EINVAL; 497 498 if (!buffer.length || !buffer.pointer) 499 return -EINVAL; 500 501 obj = buffer.pointer; 502 if (obj->type != ACPI_TYPE_BUFFER || 503 obj->buffer.length < sizeof(*lapic)) { 504 kfree(buffer.pointer); 505 return -EINVAL; 506 } 507 508 lapic = (struct acpi_madt_local_apic *)obj->buffer.pointer; 509 510 if (lapic->header.type != ACPI_MADT_TYPE_LOCAL_APIC || 511 !(lapic->lapic_flags & ACPI_MADT_ENABLED)) { 512 kfree(buffer.pointer); 513 return -EINVAL; 514 } 515 516 physid = lapic->id; 517 518 kfree(buffer.pointer); 519 buffer.length = ACPI_ALLOCATE_BUFFER; 520 buffer.pointer = NULL; 521 522 if (!alloc_cpumask_var(&tmp_map, GFP_KERNEL)) 523 goto out; 524 525 if (!alloc_cpumask_var(&new_map, GFP_KERNEL)) 526 goto free_tmp_map; 527 528 cpumask_copy(tmp_map, cpu_present_mask); 529 acpi_register_lapic(physid, lapic->lapic_flags & ACPI_MADT_ENABLED); 530 531 /* 532 * If mp_register_lapic successfully generates a new logical cpu 533 * number, then the following will get us exactly what was mapped 534 */ 535 cpumask_andnot(new_map, cpu_present_mask, tmp_map); 536 if (cpumask_empty(new_map)) { 537 printk ("Unable to map lapic to logical cpu number\n"); 538 retval = -EINVAL; 539 goto free_new_map; 540 } 541 542 cpu = cpumask_first(new_map); 543 544 *pcpu = cpu; 545 retval = 0; 546 547 free_new_map: 548 free_cpumask_var(new_map); 549 free_tmp_map: 550 free_cpumask_var(tmp_map); 551 out: 552 return retval; 553 } 554 555 /* wrapper to silence section mismatch warning */ 556 int __ref acpi_map_lsapic(acpi_handle handle, int *pcpu) 557 { 558 return _acpi_map_lsapic(handle, pcpu); 559 } 560 EXPORT_SYMBOL(acpi_map_lsapic); 561 562 int acpi_unmap_lsapic(int cpu) 563 { 564 per_cpu(x86_cpu_to_apicid, cpu) = -1; 565 set_cpu_present(cpu, false); 566 num_processors--; 567 568 return (0); 569 } 570 571 EXPORT_SYMBOL(acpi_unmap_lsapic); 572 #endif /* CONFIG_ACPI_HOTPLUG_CPU */ 573 574 int acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base) 575 { 576 /* TBD */ 577 return -EINVAL; 578 } 579 580 EXPORT_SYMBOL(acpi_register_ioapic); 581 582 int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base) 583 { 584 /* TBD */ 585 return -EINVAL; 586 } 587 588 EXPORT_SYMBOL(acpi_unregister_ioapic); 589 590 static int __init acpi_parse_sbf(struct acpi_table_header *table) 591 { 592 struct acpi_table_boot *sb; 593 594 sb = (struct acpi_table_boot *)table; 595 if (!sb) { 596 printk(KERN_WARNING PREFIX "Unable to map SBF\n"); 597 return -ENODEV; 598 } 599 600 sbf_port = sb->cmos_index; /* Save CMOS port */ 601 602 return 0; 603 } 604 605 #ifdef CONFIG_HPET_TIMER 606 #include <asm/hpet.h> 607 608 static struct __initdata resource *hpet_res; 609 610 static int __init acpi_parse_hpet(struct acpi_table_header *table) 611 { 612 struct acpi_table_hpet *hpet_tbl; 613 614 hpet_tbl = (struct acpi_table_hpet *)table; 615 if (!hpet_tbl) { 616 printk(KERN_WARNING PREFIX "Unable to map HPET\n"); 617 return -ENODEV; 618 } 619 620 if (hpet_tbl->address.space_id != ACPI_SPACE_MEM) { 621 printk(KERN_WARNING PREFIX "HPET timers must be located in " 622 "memory.\n"); 623 return -1; 624 } 625 626 hpet_address = hpet_tbl->address.address; 627 hpet_blockid = hpet_tbl->sequence; 628 629 /* 630 * Some broken BIOSes advertise HPET at 0x0. We really do not 631 * want to allocate a resource there. 632 */ 633 if (!hpet_address) { 634 printk(KERN_WARNING PREFIX 635 "HPET id: %#x base: %#lx is invalid\n", 636 hpet_tbl->id, hpet_address); 637 return 0; 638 } 639 #ifdef CONFIG_X86_64 640 /* 641 * Some even more broken BIOSes advertise HPET at 642 * 0xfed0000000000000 instead of 0xfed00000. Fix it up and add 643 * some noise: 644 */ 645 if (hpet_address == 0xfed0000000000000UL) { 646 if (!hpet_force_user) { 647 printk(KERN_WARNING PREFIX "HPET id: %#x " 648 "base: 0xfed0000000000000 is bogus\n " 649 "try hpet=force on the kernel command line to " 650 "fix it up to 0xfed00000.\n", hpet_tbl->id); 651 hpet_address = 0; 652 return 0; 653 } 654 printk(KERN_WARNING PREFIX 655 "HPET id: %#x base: 0xfed0000000000000 fixed up " 656 "to 0xfed00000.\n", hpet_tbl->id); 657 hpet_address >>= 32; 658 } 659 #endif 660 printk(KERN_INFO PREFIX "HPET id: %#x base: %#lx\n", 661 hpet_tbl->id, hpet_address); 662 663 /* 664 * Allocate and initialize the HPET firmware resource for adding into 665 * the resource tree during the lateinit timeframe. 666 */ 667 #define HPET_RESOURCE_NAME_SIZE 9 668 hpet_res = alloc_bootmem(sizeof(*hpet_res) + HPET_RESOURCE_NAME_SIZE); 669 670 hpet_res->name = (void *)&hpet_res[1]; 671 hpet_res->flags = IORESOURCE_MEM; 672 snprintf((char *)hpet_res->name, HPET_RESOURCE_NAME_SIZE, "HPET %u", 673 hpet_tbl->sequence); 674 675 hpet_res->start = hpet_address; 676 hpet_res->end = hpet_address + (1 * 1024) - 1; 677 678 return 0; 679 } 680 681 /* 682 * hpet_insert_resource inserts the HPET resources used into the resource 683 * tree. 684 */ 685 static __init int hpet_insert_resource(void) 686 { 687 if (!hpet_res) 688 return 1; 689 690 return insert_resource(&iomem_resource, hpet_res); 691 } 692 693 late_initcall(hpet_insert_resource); 694 695 #else 696 #define acpi_parse_hpet NULL 697 #endif 698 699 static int __init acpi_parse_fadt(struct acpi_table_header *table) 700 { 701 702 #ifdef CONFIG_X86_PM_TIMER 703 /* detect the location of the ACPI PM Timer */ 704 if (acpi_gbl_FADT.header.revision >= FADT2_REVISION_ID) { 705 /* FADT rev. 2 */ 706 if (acpi_gbl_FADT.xpm_timer_block.space_id != 707 ACPI_ADR_SPACE_SYSTEM_IO) 708 return 0; 709 710 pmtmr_ioport = acpi_gbl_FADT.xpm_timer_block.address; 711 /* 712 * "X" fields are optional extensions to the original V1.0 713 * fields, so we must selectively expand V1.0 fields if the 714 * corresponding X field is zero. 715 */ 716 if (!pmtmr_ioport) 717 pmtmr_ioport = acpi_gbl_FADT.pm_timer_block; 718 } else { 719 /* FADT rev. 1 */ 720 pmtmr_ioport = acpi_gbl_FADT.pm_timer_block; 721 } 722 if (pmtmr_ioport) 723 printk(KERN_INFO PREFIX "PM-Timer IO Port: %#x\n", 724 pmtmr_ioport); 725 #endif 726 return 0; 727 } 728 729 #ifdef CONFIG_X86_LOCAL_APIC 730 /* 731 * Parse LAPIC entries in MADT 732 * returns 0 on success, < 0 on error 733 */ 734 735 static void __init acpi_register_lapic_address(unsigned long address) 736 { 737 mp_lapic_addr = address; 738 739 set_fixmap_nocache(FIX_APIC_BASE, address); 740 if (boot_cpu_physical_apicid == -1U) { 741 boot_cpu_physical_apicid = read_apic_id(); 742 apic_version[boot_cpu_physical_apicid] = 743 GET_APIC_VERSION(apic_read(APIC_LVR)); 744 } 745 } 746 747 static int __init early_acpi_parse_madt_lapic_addr_ovr(void) 748 { 749 int count; 750 751 if (!cpu_has_apic) 752 return -ENODEV; 753 754 /* 755 * Note that the LAPIC address is obtained from the MADT (32-bit value) 756 * and (optionally) overriden by a LAPIC_ADDR_OVR entry (64-bit value). 757 */ 758 759 count = 760 acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE, 761 acpi_parse_lapic_addr_ovr, 0); 762 if (count < 0) { 763 printk(KERN_ERR PREFIX 764 "Error parsing LAPIC address override entry\n"); 765 return count; 766 } 767 768 acpi_register_lapic_address(acpi_lapic_addr); 769 770 return count; 771 } 772 773 static int __init acpi_parse_madt_lapic_entries(void) 774 { 775 int count; 776 int x2count = 0; 777 778 if (!cpu_has_apic) 779 return -ENODEV; 780 781 /* 782 * Note that the LAPIC address is obtained from the MADT (32-bit value) 783 * and (optionally) overriden by a LAPIC_ADDR_OVR entry (64-bit value). 784 */ 785 786 count = 787 acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE, 788 acpi_parse_lapic_addr_ovr, 0); 789 if (count < 0) { 790 printk(KERN_ERR PREFIX 791 "Error parsing LAPIC address override entry\n"); 792 return count; 793 } 794 795 acpi_register_lapic_address(acpi_lapic_addr); 796 797 count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_SAPIC, 798 acpi_parse_sapic, MAX_APICS); 799 800 if (!count) { 801 x2count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_X2APIC, 802 acpi_parse_x2apic, MAX_APICS); 803 count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC, 804 acpi_parse_lapic, MAX_APICS); 805 } 806 if (!count && !x2count) { 807 printk(KERN_ERR PREFIX "No LAPIC entries present\n"); 808 /* TBD: Cleanup to allow fallback to MPS */ 809 return -ENODEV; 810 } else if (count < 0 || x2count < 0) { 811 printk(KERN_ERR PREFIX "Error parsing LAPIC entry\n"); 812 /* TBD: Cleanup to allow fallback to MPS */ 813 return count; 814 } 815 816 x2count = 817 acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_X2APIC_NMI, 818 acpi_parse_x2apic_nmi, 0); 819 count = 820 acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_NMI, acpi_parse_lapic_nmi, 0); 821 if (count < 0 || x2count < 0) { 822 printk(KERN_ERR PREFIX "Error parsing LAPIC NMI entry\n"); 823 /* TBD: Cleanup to allow fallback to MPS */ 824 return count; 825 } 826 return 0; 827 } 828 #endif /* CONFIG_X86_LOCAL_APIC */ 829 830 #ifdef CONFIG_X86_IO_APIC 831 #define MP_ISA_BUS 0 832 833 #ifdef CONFIG_X86_ES7000 834 extern int es7000_plat; 835 #endif 836 837 int __init acpi_probe_gsi(void) 838 { 839 int idx; 840 int gsi; 841 int max_gsi = 0; 842 843 if (acpi_disabled) 844 return 0; 845 846 if (!acpi_ioapic) 847 return 0; 848 849 max_gsi = 0; 850 for (idx = 0; idx < nr_ioapics; idx++) { 851 gsi = mp_gsi_routing[idx].gsi_end; 852 853 if (gsi > max_gsi) 854 max_gsi = gsi; 855 } 856 857 return max_gsi + 1; 858 } 859 860 static void assign_to_mp_irq(struct mpc_intsrc *m, 861 struct mpc_intsrc *mp_irq) 862 { 863 memcpy(mp_irq, m, sizeof(struct mpc_intsrc)); 864 } 865 866 static int mp_irq_cmp(struct mpc_intsrc *mp_irq, 867 struct mpc_intsrc *m) 868 { 869 return memcmp(mp_irq, m, sizeof(struct mpc_intsrc)); 870 } 871 872 static void save_mp_irq(struct mpc_intsrc *m) 873 { 874 int i; 875 876 for (i = 0; i < mp_irq_entries; i++) { 877 if (!mp_irq_cmp(&mp_irqs[i], m)) 878 return; 879 } 880 881 assign_to_mp_irq(m, &mp_irqs[mp_irq_entries]); 882 if (++mp_irq_entries == MAX_IRQ_SOURCES) 883 panic("Max # of irq sources exceeded!!\n"); 884 } 885 886 void __init mp_override_legacy_irq(u8 bus_irq, u8 polarity, u8 trigger, u32 gsi) 887 { 888 int ioapic; 889 int pin; 890 struct mpc_intsrc mp_irq; 891 892 /* 893 * Convert 'gsi' to 'ioapic.pin'. 894 */ 895 ioapic = mp_find_ioapic(gsi); 896 if (ioapic < 0) 897 return; 898 pin = mp_find_ioapic_pin(ioapic, gsi); 899 900 /* 901 * TBD: This check is for faulty timer entries, where the override 902 * erroneously sets the trigger to level, resulting in a HUGE 903 * increase of timer interrupts! 904 */ 905 if ((bus_irq == 0) && (trigger == 3)) 906 trigger = 1; 907 908 mp_irq.type = MP_INTSRC; 909 mp_irq.irqtype = mp_INT; 910 mp_irq.irqflag = (trigger << 2) | polarity; 911 mp_irq.srcbus = MP_ISA_BUS; 912 mp_irq.srcbusirq = bus_irq; /* IRQ */ 913 mp_irq.dstapic = mp_ioapics[ioapic].apicid; /* APIC ID */ 914 mp_irq.dstirq = pin; /* INTIN# */ 915 916 save_mp_irq(&mp_irq); 917 } 918 919 void __init mp_config_acpi_legacy_irqs(void) 920 { 921 int i; 922 int ioapic; 923 unsigned int dstapic; 924 struct mpc_intsrc mp_irq; 925 926 #if defined (CONFIG_MCA) || defined (CONFIG_EISA) 927 /* 928 * Fabricate the legacy ISA bus (bus #31). 929 */ 930 mp_bus_id_to_type[MP_ISA_BUS] = MP_BUS_ISA; 931 #endif 932 set_bit(MP_ISA_BUS, mp_bus_not_pci); 933 pr_debug("Bus #%d is ISA\n", MP_ISA_BUS); 934 935 #ifdef CONFIG_X86_ES7000 936 /* 937 * Older generations of ES7000 have no legacy identity mappings 938 */ 939 if (es7000_plat == 1) 940 return; 941 #endif 942 943 /* 944 * Locate the IOAPIC that manages the ISA IRQs (0-15). 945 */ 946 ioapic = mp_find_ioapic(0); 947 if (ioapic < 0) 948 return; 949 dstapic = mp_ioapics[ioapic].apicid; 950 951 /* 952 * Use the default configuration for the IRQs 0-15. Unless 953 * overridden by (MADT) interrupt source override entries. 954 */ 955 for (i = 0; i < 16; i++) { 956 int idx; 957 958 for (idx = 0; idx < mp_irq_entries; idx++) { 959 struct mpc_intsrc *irq = mp_irqs + idx; 960 961 /* Do we already have a mapping for this ISA IRQ? */ 962 if (irq->srcbus == MP_ISA_BUS && irq->srcbusirq == i) 963 break; 964 965 /* Do we already have a mapping for this IOAPIC pin */ 966 if (irq->dstapic == dstapic && irq->dstirq == i) 967 break; 968 } 969 970 if (idx != mp_irq_entries) { 971 printk(KERN_DEBUG "ACPI: IRQ%d used by override.\n", i); 972 continue; /* IRQ already used */ 973 } 974 975 mp_irq.type = MP_INTSRC; 976 mp_irq.irqflag = 0; /* Conforming */ 977 mp_irq.srcbus = MP_ISA_BUS; 978 mp_irq.dstapic = dstapic; 979 mp_irq.irqtype = mp_INT; 980 mp_irq.srcbusirq = i; /* Identity mapped */ 981 mp_irq.dstirq = i; 982 983 save_mp_irq(&mp_irq); 984 } 985 } 986 987 static int mp_config_acpi_gsi(struct device *dev, u32 gsi, int trigger, 988 int polarity) 989 { 990 #ifdef CONFIG_X86_MPPARSE 991 struct mpc_intsrc mp_irq; 992 struct pci_dev *pdev; 993 unsigned char number; 994 unsigned int devfn; 995 int ioapic; 996 u8 pin; 997 998 if (!acpi_ioapic) 999 return 0; 1000 if (!dev) 1001 return 0; 1002 if (dev->bus != &pci_bus_type) 1003 return 0; 1004 1005 pdev = to_pci_dev(dev); 1006 number = pdev->bus->number; 1007 devfn = pdev->devfn; 1008 pin = pdev->pin; 1009 /* print the entry should happen on mptable identically */ 1010 mp_irq.type = MP_INTSRC; 1011 mp_irq.irqtype = mp_INT; 1012 mp_irq.irqflag = (trigger == ACPI_EDGE_SENSITIVE ? 4 : 0x0c) | 1013 (polarity == ACPI_ACTIVE_HIGH ? 1 : 3); 1014 mp_irq.srcbus = number; 1015 mp_irq.srcbusirq = (((devfn >> 3) & 0x1f) << 2) | ((pin - 1) & 3); 1016 ioapic = mp_find_ioapic(gsi); 1017 mp_irq.dstapic = mp_ioapics[ioapic].apicid; 1018 mp_irq.dstirq = mp_find_ioapic_pin(ioapic, gsi); 1019 1020 save_mp_irq(&mp_irq); 1021 #endif 1022 return 0; 1023 } 1024 1025 int mp_register_gsi(struct device *dev, u32 gsi, int trigger, int polarity) 1026 { 1027 int ioapic; 1028 int ioapic_pin; 1029 struct io_apic_irq_attr irq_attr; 1030 1031 if (acpi_irq_model != ACPI_IRQ_MODEL_IOAPIC) 1032 return gsi; 1033 1034 /* Don't set up the ACPI SCI because it's already set up */ 1035 if (acpi_gbl_FADT.sci_interrupt == gsi) 1036 return gsi; 1037 1038 ioapic = mp_find_ioapic(gsi); 1039 if (ioapic < 0) { 1040 printk(KERN_WARNING "No IOAPIC for GSI %u\n", gsi); 1041 return gsi; 1042 } 1043 1044 ioapic_pin = mp_find_ioapic_pin(ioapic, gsi); 1045 1046 #ifdef CONFIG_X86_32 1047 if (ioapic_renumber_irq) 1048 gsi = ioapic_renumber_irq(ioapic, gsi); 1049 #endif 1050 1051 if (ioapic_pin > MP_MAX_IOAPIC_PIN) { 1052 printk(KERN_ERR "Invalid reference to IOAPIC pin " 1053 "%d-%d\n", mp_ioapics[ioapic].apicid, 1054 ioapic_pin); 1055 return gsi; 1056 } 1057 1058 if (enable_update_mptable) 1059 mp_config_acpi_gsi(dev, gsi, trigger, polarity); 1060 1061 set_io_apic_irq_attr(&irq_attr, ioapic, ioapic_pin, 1062 trigger == ACPI_EDGE_SENSITIVE ? 0 : 1, 1063 polarity == ACPI_ACTIVE_HIGH ? 0 : 1); 1064 io_apic_set_pci_routing(dev, gsi, &irq_attr); 1065 1066 return gsi; 1067 } 1068 1069 /* 1070 * Parse IOAPIC related entries in MADT 1071 * returns 0 on success, < 0 on error 1072 */ 1073 static int __init acpi_parse_madt_ioapic_entries(void) 1074 { 1075 int count; 1076 1077 /* 1078 * ACPI interpreter is required to complete interrupt setup, 1079 * so if it is off, don't enumerate the io-apics with ACPI. 1080 * If MPS is present, it will handle them, 1081 * otherwise the system will stay in PIC mode 1082 */ 1083 if (acpi_disabled || acpi_noirq) 1084 return -ENODEV; 1085 1086 if (!cpu_has_apic) 1087 return -ENODEV; 1088 1089 /* 1090 * if "noapic" boot option, don't look for IO-APICs 1091 */ 1092 if (skip_ioapic_setup) { 1093 printk(KERN_INFO PREFIX "Skipping IOAPIC probe " 1094 "due to 'noapic' option.\n"); 1095 return -ENODEV; 1096 } 1097 1098 count = 1099 acpi_table_parse_madt(ACPI_MADT_TYPE_IO_APIC, acpi_parse_ioapic, 1100 MAX_IO_APICS); 1101 if (!count) { 1102 printk(KERN_ERR PREFIX "No IOAPIC entries present\n"); 1103 return -ENODEV; 1104 } else if (count < 0) { 1105 printk(KERN_ERR PREFIX "Error parsing IOAPIC entry\n"); 1106 return count; 1107 } 1108 1109 count = 1110 acpi_table_parse_madt(ACPI_MADT_TYPE_INTERRUPT_OVERRIDE, acpi_parse_int_src_ovr, 1111 nr_irqs); 1112 if (count < 0) { 1113 printk(KERN_ERR PREFIX 1114 "Error parsing interrupt source overrides entry\n"); 1115 /* TBD: Cleanup to allow fallback to MPS */ 1116 return count; 1117 } 1118 1119 /* 1120 * If BIOS did not supply an INT_SRC_OVR for the SCI 1121 * pretend we got one so we can set the SCI flags. 1122 */ 1123 if (!acpi_sci_override_gsi) 1124 acpi_sci_ioapic_setup(acpi_gbl_FADT.sci_interrupt, 0, 0); 1125 1126 /* Fill in identity legacy mappings where no override */ 1127 mp_config_acpi_legacy_irqs(); 1128 1129 count = 1130 acpi_table_parse_madt(ACPI_MADT_TYPE_NMI_SOURCE, acpi_parse_nmi_src, 1131 nr_irqs); 1132 if (count < 0) { 1133 printk(KERN_ERR PREFIX "Error parsing NMI SRC entry\n"); 1134 /* TBD: Cleanup to allow fallback to MPS */ 1135 return count; 1136 } 1137 1138 return 0; 1139 } 1140 #else 1141 static inline int acpi_parse_madt_ioapic_entries(void) 1142 { 1143 return -1; 1144 } 1145 #endif /* !CONFIG_X86_IO_APIC */ 1146 1147 static void __init early_acpi_process_madt(void) 1148 { 1149 #ifdef CONFIG_X86_LOCAL_APIC 1150 int error; 1151 1152 if (!acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) { 1153 1154 /* 1155 * Parse MADT LAPIC entries 1156 */ 1157 error = early_acpi_parse_madt_lapic_addr_ovr(); 1158 if (!error) { 1159 acpi_lapic = 1; 1160 smp_found_config = 1; 1161 } 1162 if (error == -EINVAL) { 1163 /* 1164 * Dell Precision Workstation 410, 610 come here. 1165 */ 1166 printk(KERN_ERR PREFIX 1167 "Invalid BIOS MADT, disabling ACPI\n"); 1168 disable_acpi(); 1169 } 1170 } 1171 #endif 1172 } 1173 1174 static void __init acpi_process_madt(void) 1175 { 1176 #ifdef CONFIG_X86_LOCAL_APIC 1177 int error; 1178 1179 if (!acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) { 1180 1181 /* 1182 * Parse MADT LAPIC entries 1183 */ 1184 error = acpi_parse_madt_lapic_entries(); 1185 if (!error) { 1186 acpi_lapic = 1; 1187 1188 #ifdef CONFIG_X86_BIGSMP 1189 generic_bigsmp_probe(); 1190 #endif 1191 /* 1192 * Parse MADT IO-APIC entries 1193 */ 1194 error = acpi_parse_madt_ioapic_entries(); 1195 if (!error) { 1196 acpi_irq_model = ACPI_IRQ_MODEL_IOAPIC; 1197 acpi_ioapic = 1; 1198 1199 smp_found_config = 1; 1200 if (apic->setup_apic_routing) 1201 apic->setup_apic_routing(); 1202 } 1203 } 1204 if (error == -EINVAL) { 1205 /* 1206 * Dell Precision Workstation 410, 610 come here. 1207 */ 1208 printk(KERN_ERR PREFIX 1209 "Invalid BIOS MADT, disabling ACPI\n"); 1210 disable_acpi(); 1211 } 1212 } else { 1213 /* 1214 * ACPI found no MADT, and so ACPI wants UP PIC mode. 1215 * In the event an MPS table was found, forget it. 1216 * Boot with "acpi=off" to use MPS on such a system. 1217 */ 1218 if (smp_found_config) { 1219 printk(KERN_WARNING PREFIX 1220 "No APIC-table, disabling MPS\n"); 1221 smp_found_config = 0; 1222 } 1223 } 1224 1225 /* 1226 * ACPI supports both logical (e.g. Hyper-Threading) and physical 1227 * processors, where MPS only supports physical. 1228 */ 1229 if (acpi_lapic && acpi_ioapic) 1230 printk(KERN_INFO "Using ACPI (MADT) for SMP configuration " 1231 "information\n"); 1232 else if (acpi_lapic) 1233 printk(KERN_INFO "Using ACPI for processor (LAPIC) " 1234 "configuration information\n"); 1235 #endif 1236 return; 1237 } 1238 1239 static int __init disable_acpi_irq(const struct dmi_system_id *d) 1240 { 1241 if (!acpi_force) { 1242 printk(KERN_NOTICE "%s detected: force use of acpi=noirq\n", 1243 d->ident); 1244 acpi_noirq_set(); 1245 } 1246 return 0; 1247 } 1248 1249 static int __init disable_acpi_pci(const struct dmi_system_id *d) 1250 { 1251 if (!acpi_force) { 1252 printk(KERN_NOTICE "%s detected: force use of pci=noacpi\n", 1253 d->ident); 1254 acpi_disable_pci(); 1255 } 1256 return 0; 1257 } 1258 1259 static int __init dmi_disable_acpi(const struct dmi_system_id *d) 1260 { 1261 if (!acpi_force) { 1262 printk(KERN_NOTICE "%s detected: acpi off\n", d->ident); 1263 disable_acpi(); 1264 } else { 1265 printk(KERN_NOTICE 1266 "Warning: DMI blacklist says broken, but acpi forced\n"); 1267 } 1268 return 0; 1269 } 1270 1271 /* 1272 * Limit ACPI to CPU enumeration for HT 1273 */ 1274 static int __init force_acpi_ht(const struct dmi_system_id *d) 1275 { 1276 if (!acpi_force) { 1277 printk(KERN_NOTICE "%s detected: force use of acpi=ht\n", 1278 d->ident); 1279 disable_acpi(); 1280 acpi_ht = 1; 1281 } else { 1282 printk(KERN_NOTICE 1283 "Warning: acpi=force overrules DMI blacklist: acpi=ht\n"); 1284 } 1285 return 0; 1286 } 1287 1288 /* 1289 * Force ignoring BIOS IRQ0 pin2 override 1290 */ 1291 static int __init dmi_ignore_irq0_timer_override(const struct dmi_system_id *d) 1292 { 1293 /* 1294 * The ati_ixp4x0_rev() early PCI quirk should have set 1295 * the acpi_skip_timer_override flag already: 1296 */ 1297 if (!acpi_skip_timer_override) { 1298 WARN(1, KERN_ERR "ati_ixp4x0 quirk not complete.\n"); 1299 pr_notice("%s detected: Ignoring BIOS IRQ0 pin2 override\n", 1300 d->ident); 1301 acpi_skip_timer_override = 1; 1302 } 1303 return 0; 1304 } 1305 1306 /* 1307 * If your system is blacklisted here, but you find that acpi=force 1308 * works for you, please contact linux-acpi@vger.kernel.org 1309 */ 1310 static struct dmi_system_id __initdata acpi_dmi_table[] = { 1311 /* 1312 * Boxes that need ACPI disabled 1313 */ 1314 { 1315 .callback = dmi_disable_acpi, 1316 .ident = "IBM Thinkpad", 1317 .matches = { 1318 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), 1319 DMI_MATCH(DMI_BOARD_NAME, "2629H1G"), 1320 }, 1321 }, 1322 1323 /* 1324 * Boxes that need acpi=ht 1325 */ 1326 { 1327 .callback = force_acpi_ht, 1328 .ident = "FSC Primergy T850", 1329 .matches = { 1330 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"), 1331 DMI_MATCH(DMI_PRODUCT_NAME, "PRIMERGY T850"), 1332 }, 1333 }, 1334 { 1335 .callback = force_acpi_ht, 1336 .ident = "HP VISUALIZE NT Workstation", 1337 .matches = { 1338 DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"), 1339 DMI_MATCH(DMI_PRODUCT_NAME, "HP VISUALIZE NT Workstation"), 1340 }, 1341 }, 1342 { 1343 .callback = force_acpi_ht, 1344 .ident = "Compaq Workstation W8000", 1345 .matches = { 1346 DMI_MATCH(DMI_SYS_VENDOR, "Compaq"), 1347 DMI_MATCH(DMI_PRODUCT_NAME, "Workstation W8000"), 1348 }, 1349 }, 1350 { 1351 .callback = force_acpi_ht, 1352 .ident = "ASUS P2B-DS", 1353 .matches = { 1354 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."), 1355 DMI_MATCH(DMI_BOARD_NAME, "P2B-DS"), 1356 }, 1357 }, 1358 { 1359 .callback = force_acpi_ht, 1360 .ident = "ASUS CUR-DLS", 1361 .matches = { 1362 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."), 1363 DMI_MATCH(DMI_BOARD_NAME, "CUR-DLS"), 1364 }, 1365 }, 1366 { 1367 .callback = force_acpi_ht, 1368 .ident = "ABIT i440BX-W83977", 1369 .matches = { 1370 DMI_MATCH(DMI_BOARD_VENDOR, "ABIT <http://www.abit.com>"), 1371 DMI_MATCH(DMI_BOARD_NAME, "i440BX-W83977 (BP6)"), 1372 }, 1373 }, 1374 { 1375 .callback = force_acpi_ht, 1376 .ident = "IBM Bladecenter", 1377 .matches = { 1378 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), 1379 DMI_MATCH(DMI_BOARD_NAME, "IBM eServer BladeCenter HS20"), 1380 }, 1381 }, 1382 { 1383 .callback = force_acpi_ht, 1384 .ident = "IBM eServer xSeries 360", 1385 .matches = { 1386 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), 1387 DMI_MATCH(DMI_BOARD_NAME, "eServer xSeries 360"), 1388 }, 1389 }, 1390 { 1391 .callback = force_acpi_ht, 1392 .ident = "IBM eserver xSeries 330", 1393 .matches = { 1394 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), 1395 DMI_MATCH(DMI_BOARD_NAME, "eserver xSeries 330"), 1396 }, 1397 }, 1398 { 1399 .callback = force_acpi_ht, 1400 .ident = "IBM eserver xSeries 440", 1401 .matches = { 1402 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), 1403 DMI_MATCH(DMI_PRODUCT_NAME, "eserver xSeries 440"), 1404 }, 1405 }, 1406 1407 /* 1408 * Boxes that need ACPI PCI IRQ routing disabled 1409 */ 1410 { 1411 .callback = disable_acpi_irq, 1412 .ident = "ASUS A7V", 1413 .matches = { 1414 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC"), 1415 DMI_MATCH(DMI_BOARD_NAME, "<A7V>"), 1416 /* newer BIOS, Revision 1011, does work */ 1417 DMI_MATCH(DMI_BIOS_VERSION, 1418 "ASUS A7V ACPI BIOS Revision 1007"), 1419 }, 1420 }, 1421 { 1422 /* 1423 * Latest BIOS for IBM 600E (1.16) has bad pcinum 1424 * for LPC bridge, which is needed for the PCI 1425 * interrupt links to work. DSDT fix is in bug 5966. 1426 * 2645, 2646 model numbers are shared with 600/600E/600X 1427 */ 1428 .callback = disable_acpi_irq, 1429 .ident = "IBM Thinkpad 600 Series 2645", 1430 .matches = { 1431 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), 1432 DMI_MATCH(DMI_BOARD_NAME, "2645"), 1433 }, 1434 }, 1435 { 1436 .callback = disable_acpi_irq, 1437 .ident = "IBM Thinkpad 600 Series 2646", 1438 .matches = { 1439 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), 1440 DMI_MATCH(DMI_BOARD_NAME, "2646"), 1441 }, 1442 }, 1443 /* 1444 * Boxes that need ACPI PCI IRQ routing and PCI scan disabled 1445 */ 1446 { /* _BBN 0 bug */ 1447 .callback = disable_acpi_pci, 1448 .ident = "ASUS PR-DLS", 1449 .matches = { 1450 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."), 1451 DMI_MATCH(DMI_BOARD_NAME, "PR-DLS"), 1452 DMI_MATCH(DMI_BIOS_VERSION, 1453 "ASUS PR-DLS ACPI BIOS Revision 1010"), 1454 DMI_MATCH(DMI_BIOS_DATE, "03/21/2003") 1455 }, 1456 }, 1457 { 1458 .callback = disable_acpi_pci, 1459 .ident = "Acer TravelMate 36x Laptop", 1460 .matches = { 1461 DMI_MATCH(DMI_SYS_VENDOR, "Acer"), 1462 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 360"), 1463 }, 1464 }, 1465 {} 1466 }; 1467 1468 /* second table for DMI checks that should run after early-quirks */ 1469 static struct dmi_system_id __initdata acpi_dmi_table_late[] = { 1470 /* 1471 * HP laptops which use a DSDT reporting as HP/SB400/10000, 1472 * which includes some code which overrides all temperature 1473 * trip points to 16C if the INTIN2 input of the I/O APIC 1474 * is enabled. This input is incorrectly designated the 1475 * ISA IRQ 0 via an interrupt source override even though 1476 * it is wired to the output of the master 8259A and INTIN0 1477 * is not connected at all. Force ignoring BIOS IRQ0 pin2 1478 * override in that cases. 1479 */ 1480 { 1481 .callback = dmi_ignore_irq0_timer_override, 1482 .ident = "HP nx6115 laptop", 1483 .matches = { 1484 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), 1485 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6115"), 1486 }, 1487 }, 1488 { 1489 .callback = dmi_ignore_irq0_timer_override, 1490 .ident = "HP NX6125 laptop", 1491 .matches = { 1492 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), 1493 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6125"), 1494 }, 1495 }, 1496 { 1497 .callback = dmi_ignore_irq0_timer_override, 1498 .ident = "HP NX6325 laptop", 1499 .matches = { 1500 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), 1501 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6325"), 1502 }, 1503 }, 1504 { 1505 .callback = dmi_ignore_irq0_timer_override, 1506 .ident = "HP 6715b laptop", 1507 .matches = { 1508 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), 1509 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq 6715b"), 1510 }, 1511 }, 1512 {} 1513 }; 1514 1515 /* 1516 * acpi_boot_table_init() and acpi_boot_init() 1517 * called from setup_arch(), always. 1518 * 1. checksums all tables 1519 * 2. enumerates lapics 1520 * 3. enumerates io-apics 1521 * 1522 * acpi_table_init() is separate to allow reading SRAT without 1523 * other side effects. 1524 * 1525 * side effects of acpi_boot_init: 1526 * acpi_lapic = 1 if LAPIC found 1527 * acpi_ioapic = 1 if IOAPIC found 1528 * if (acpi_lapic && acpi_ioapic) smp_found_config = 1; 1529 * if acpi_blacklisted() acpi_disabled = 1; 1530 * acpi_irq_model=... 1531 * ... 1532 * 1533 * return value: (currently ignored) 1534 * 0: success 1535 * !0: failure 1536 */ 1537 1538 int __init acpi_boot_table_init(void) 1539 { 1540 int error; 1541 1542 dmi_check_system(acpi_dmi_table); 1543 1544 /* 1545 * If acpi_disabled, bail out 1546 * One exception: acpi=ht continues far enough to enumerate LAPICs 1547 */ 1548 if (acpi_disabled && !acpi_ht) 1549 return 1; 1550 1551 /* 1552 * Initialize the ACPI boot-time table parser. 1553 */ 1554 error = acpi_table_init(); 1555 if (error) { 1556 disable_acpi(); 1557 return error; 1558 } 1559 1560 acpi_table_parse(ACPI_SIG_BOOT, acpi_parse_sbf); 1561 1562 /* 1563 * blacklist may disable ACPI entirely 1564 */ 1565 error = acpi_blacklisted(); 1566 if (error) { 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 error; 1573 } 1574 } 1575 1576 return 0; 1577 } 1578 1579 int __init early_acpi_boot_init(void) 1580 { 1581 /* 1582 * If acpi_disabled, bail out 1583 * One exception: acpi=ht continues far enough to enumerate LAPICs 1584 */ 1585 if (acpi_disabled && !acpi_ht) 1586 return 1; 1587 1588 /* 1589 * Process the Multiple APIC Description Table (MADT), if present 1590 */ 1591 early_acpi_process_madt(); 1592 1593 return 0; 1594 } 1595 1596 int __init acpi_boot_init(void) 1597 { 1598 /* those are executed after early-quirks are executed */ 1599 dmi_check_system(acpi_dmi_table_late); 1600 1601 /* 1602 * If acpi_disabled, bail out 1603 * One exception: acpi=ht continues far enough to enumerate LAPICs 1604 */ 1605 if (acpi_disabled && !acpi_ht) 1606 return 1; 1607 1608 acpi_table_parse(ACPI_SIG_BOOT, acpi_parse_sbf); 1609 1610 /* 1611 * set sci_int and PM timer address 1612 */ 1613 acpi_table_parse(ACPI_SIG_FADT, acpi_parse_fadt); 1614 1615 /* 1616 * Process the Multiple APIC Description Table (MADT), if present 1617 */ 1618 acpi_process_madt(); 1619 1620 acpi_table_parse(ACPI_SIG_HPET, acpi_parse_hpet); 1621 1622 return 0; 1623 } 1624 1625 static int __init parse_acpi(char *arg) 1626 { 1627 if (!arg) 1628 return -EINVAL; 1629 1630 /* "acpi=off" disables both ACPI table parsing and interpreter */ 1631 if (strcmp(arg, "off") == 0) { 1632 disable_acpi(); 1633 } 1634 /* acpi=force to over-ride black-list */ 1635 else if (strcmp(arg, "force") == 0) { 1636 acpi_force = 1; 1637 acpi_ht = 1; 1638 acpi_disabled = 0; 1639 } 1640 /* acpi=strict disables out-of-spec workarounds */ 1641 else if (strcmp(arg, "strict") == 0) { 1642 acpi_strict = 1; 1643 } 1644 /* Limit ACPI just to boot-time to enable HT */ 1645 else if (strcmp(arg, "ht") == 0) { 1646 if (!acpi_force) 1647 disable_acpi(); 1648 acpi_ht = 1; 1649 } 1650 /* acpi=rsdt use RSDT instead of XSDT */ 1651 else if (strcmp(arg, "rsdt") == 0) { 1652 acpi_rsdt_forced = 1; 1653 } 1654 /* "acpi=noirq" disables ACPI interrupt routing */ 1655 else if (strcmp(arg, "noirq") == 0) { 1656 acpi_noirq_set(); 1657 } else { 1658 /* Core will printk when we return error. */ 1659 return -EINVAL; 1660 } 1661 return 0; 1662 } 1663 early_param("acpi", parse_acpi); 1664 1665 /* FIXME: Using pci= for an ACPI parameter is a travesty. */ 1666 static int __init parse_pci(char *arg) 1667 { 1668 if (arg && strcmp(arg, "noacpi") == 0) 1669 acpi_disable_pci(); 1670 return 0; 1671 } 1672 early_param("pci", parse_pci); 1673 1674 int __init acpi_mps_check(void) 1675 { 1676 #if defined(CONFIG_X86_LOCAL_APIC) && !defined(CONFIG_X86_MPPARSE) 1677 /* mptable code is not built-in*/ 1678 if (acpi_disabled || acpi_noirq) { 1679 printk(KERN_WARNING "MPS support code is not built-in.\n" 1680 "Using acpi=off or acpi=noirq or pci=noacpi " 1681 "may have problem\n"); 1682 return 1; 1683 } 1684 #endif 1685 return 0; 1686 } 1687 1688 #ifdef CONFIG_X86_IO_APIC 1689 static int __init parse_acpi_skip_timer_override(char *arg) 1690 { 1691 acpi_skip_timer_override = 1; 1692 return 0; 1693 } 1694 early_param("acpi_skip_timer_override", parse_acpi_skip_timer_override); 1695 1696 static int __init parse_acpi_use_timer_override(char *arg) 1697 { 1698 acpi_use_timer_override = 1; 1699 return 0; 1700 } 1701 early_param("acpi_use_timer_override", parse_acpi_use_timer_override); 1702 #endif /* CONFIG_X86_IO_APIC */ 1703 1704 static int __init setup_acpi_sci(char *s) 1705 { 1706 if (!s) 1707 return -EINVAL; 1708 if (!strcmp(s, "edge")) 1709 acpi_sci_flags = ACPI_MADT_TRIGGER_EDGE | 1710 (acpi_sci_flags & ~ACPI_MADT_TRIGGER_MASK); 1711 else if (!strcmp(s, "level")) 1712 acpi_sci_flags = ACPI_MADT_TRIGGER_LEVEL | 1713 (acpi_sci_flags & ~ACPI_MADT_TRIGGER_MASK); 1714 else if (!strcmp(s, "high")) 1715 acpi_sci_flags = ACPI_MADT_POLARITY_ACTIVE_HIGH | 1716 (acpi_sci_flags & ~ACPI_MADT_POLARITY_MASK); 1717 else if (!strcmp(s, "low")) 1718 acpi_sci_flags = ACPI_MADT_POLARITY_ACTIVE_LOW | 1719 (acpi_sci_flags & ~ACPI_MADT_POLARITY_MASK); 1720 else 1721 return -EINVAL; 1722 return 0; 1723 } 1724 early_param("acpi_sci", setup_acpi_sci); 1725 1726 int __acpi_acquire_global_lock(unsigned int *lock) 1727 { 1728 unsigned int old, new, val; 1729 do { 1730 old = *lock; 1731 new = (((old & ~0x3) + 2) + ((old >> 1) & 0x1)); 1732 val = cmpxchg(lock, old, new); 1733 } while (unlikely (val != old)); 1734 return (new < 3) ? -1 : 0; 1735 } 1736 1737 int __acpi_release_global_lock(unsigned int *lock) 1738 { 1739 unsigned int old, new, val; 1740 do { 1741 old = *lock; 1742 new = old & ~0x3; 1743 val = cmpxchg(lock, old, new); 1744 } while (unlikely (val != old)); 1745 return old & 0x1; 1746 } 1747