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x86, acpi: Fix bug in associating hot-added CPUs with corresponding NUMA node
[deliverable/linux.git] / arch / x86 / kernel / acpi / boot.c
1 /*
2 * boot.c - Architecture-Specific Low-Level ACPI Boot Support
3 *
4 * Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
5 * Copyright (C) 2001 Jun Nakajima <jun.nakajima@intel.com>
6 *
7 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 *
23 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
24 */
25
26 #include <linux/init.h>
27 #include <linux/acpi.h>
28 #include <linux/acpi_pmtmr.h>
29 #include <linux/efi.h>
30 #include <linux/cpumask.h>
31 #include <linux/module.h>
32 #include <linux/dmi.h>
33 #include <linux/irq.h>
34 #include <linux/slab.h>
35 #include <linux/bootmem.h>
36 #include <linux/ioport.h>
37 #include <linux/pci.h>
38
39 #include <asm/pci_x86.h>
40 #include <asm/pgtable.h>
41 #include <asm/io_apic.h>
42 #include <asm/apic.h>
43 #include <asm/io.h>
44 #include <asm/mpspec.h>
45 #include <asm/smp.h>
46
47 #include "sleep.h" /* To include x86_acpi_suspend_lowlevel */
48 static int __initdata acpi_force = 0;
49 int acpi_disabled;
50 EXPORT_SYMBOL(acpi_disabled);
51
52 #ifdef CONFIG_X86_64
53 # include <asm/proto.h>
54 #endif /* X86 */
55
56 #define BAD_MADT_ENTRY(entry, end) ( \
57 (!entry) || (unsigned long)entry + sizeof(*entry) > end || \
58 ((struct acpi_subtable_header *)entry)->length < sizeof(*entry))
59
60 #define PREFIX "ACPI: "
61
62 int acpi_noirq; /* skip ACPI IRQ initialization */
63 int acpi_pci_disabled; /* skip ACPI PCI scan and IRQ initialization */
64 EXPORT_SYMBOL(acpi_pci_disabled);
65
66 int acpi_lapic;
67 int acpi_ioapic;
68 int acpi_strict;
69 int acpi_disable_cmcff;
70
71 u8 acpi_sci_flags __initdata;
72 int acpi_sci_override_gsi __initdata;
73 int acpi_skip_timer_override __initdata;
74 int acpi_use_timer_override __initdata;
75 int acpi_fix_pin2_polarity __initdata;
76
77 #ifdef CONFIG_X86_LOCAL_APIC
78 static u64 acpi_lapic_addr __initdata = APIC_DEFAULT_PHYS_BASE;
79 #endif
80
81 #ifndef __HAVE_ARCH_CMPXCHG
82 #warning ACPI uses CMPXCHG, i486 and later hardware
83 #endif
84
85 /* --------------------------------------------------------------------------
86 Boot-time Configuration
87 -------------------------------------------------------------------------- */
88
89 /*
90 * The default interrupt routing model is PIC (8259). This gets
91 * overridden if IOAPICs are enumerated (below).
92 */
93 enum acpi_irq_model_id acpi_irq_model = ACPI_IRQ_MODEL_PIC;
94
95
96 /*
97 * ISA irqs by default are the first 16 gsis but can be
98 * any gsi as specified by an interrupt source override.
99 */
100 static u32 isa_irq_to_gsi[NR_IRQS_LEGACY] __read_mostly = {
101 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15
102 };
103
104 static unsigned int gsi_to_irq(unsigned int gsi)
105 {
106 unsigned int irq = gsi + NR_IRQS_LEGACY;
107 unsigned int i;
108
109 for (i = 0; i < NR_IRQS_LEGACY; i++) {
110 if (isa_irq_to_gsi[i] == gsi) {
111 return i;
112 }
113 }
114
115 /* Provide an identity mapping of gsi == irq
116 * except on truly weird platforms that have
117 * non isa irqs in the first 16 gsis.
118 */
119 if (gsi >= NR_IRQS_LEGACY)
120 irq = gsi;
121 else
122 irq = gsi_top + gsi;
123
124 return irq;
125 }
126
127 static u32 irq_to_gsi(int irq)
128 {
129 unsigned int gsi;
130
131 if (irq < NR_IRQS_LEGACY)
132 gsi = isa_irq_to_gsi[irq];
133 else if (irq < gsi_top)
134 gsi = irq;
135 else if (irq < (gsi_top + NR_IRQS_LEGACY))
136 gsi = irq - gsi_top;
137 else
138 gsi = 0xffffffff;
139
140 return gsi;
141 }
142
143 /*
144 * This is just a simple wrapper around early_ioremap(),
145 * with sanity checks for phys == 0 and size == 0.
146 */
147 char *__init __acpi_map_table(unsigned long phys, unsigned long size)
148 {
149
150 if (!phys || !size)
151 return NULL;
152
153 return early_ioremap(phys, size);
154 }
155
156 void __init __acpi_unmap_table(char *map, unsigned long size)
157 {
158 if (!map || !size)
159 return;
160
161 early_iounmap(map, size);
162 }
163
164 #ifdef CONFIG_X86_LOCAL_APIC
165 static int __init acpi_parse_madt(struct acpi_table_header *table)
166 {
167 struct acpi_table_madt *madt = NULL;
168
169 if (!cpu_has_apic)
170 return -EINVAL;
171
172 madt = (struct acpi_table_madt *)table;
173 if (!madt) {
174 printk(KERN_WARNING PREFIX "Unable to map MADT\n");
175 return -ENODEV;
176 }
177
178 if (madt->address) {
179 acpi_lapic_addr = (u64) madt->address;
180
181 printk(KERN_DEBUG PREFIX "Local APIC address 0x%08x\n",
182 madt->address);
183 }
184
185 default_acpi_madt_oem_check(madt->header.oem_id,
186 madt->header.oem_table_id);
187
188 return 0;
189 }
190
191 /**
192 * acpi_register_lapic - register a local apic and generates a logic cpu number
193 * @id: local apic id to register
194 * @enabled: this cpu is enabled or not
195 *
196 * Returns the logic cpu number which maps to the local apic
197 */
198 static int acpi_register_lapic(int id, u8 enabled)
199 {
200 unsigned int ver = 0;
201
202 if (id >= MAX_LOCAL_APIC) {
203 printk(KERN_INFO PREFIX "skipped apicid that is too big\n");
204 return -EINVAL;
205 }
206
207 if (!enabled) {
208 ++disabled_cpus;
209 return -EINVAL;
210 }
211
212 if (boot_cpu_physical_apicid != -1U)
213 ver = apic_version[boot_cpu_physical_apicid];
214
215 return generic_processor_info(id, ver);
216 }
217
218 static int __init
219 acpi_parse_x2apic(struct acpi_subtable_header *header, const unsigned long end)
220 {
221 struct acpi_madt_local_x2apic *processor = NULL;
222 int apic_id;
223 u8 enabled;
224
225 processor = (struct acpi_madt_local_x2apic *)header;
226
227 if (BAD_MADT_ENTRY(processor, end))
228 return -EINVAL;
229
230 acpi_table_print_madt_entry(header);
231
232 apic_id = processor->local_apic_id;
233 enabled = processor->lapic_flags & ACPI_MADT_ENABLED;
234 #ifdef CONFIG_X86_X2APIC
235 /*
236 * We need to register disabled CPU as well to permit
237 * counting disabled CPUs. This allows us to size
238 * cpus_possible_map more accurately, to permit
239 * to not preallocating memory for all NR_CPUS
240 * when we use CPU hotplug.
241 */
242 if (!apic->apic_id_valid(apic_id) && enabled)
243 printk(KERN_WARNING PREFIX "x2apic entry ignored\n");
244 else
245 acpi_register_lapic(apic_id, enabled);
246 #else
247 printk(KERN_WARNING PREFIX "x2apic entry ignored\n");
248 #endif
249
250 return 0;
251 }
252
253 static int __init
254 acpi_parse_lapic(struct acpi_subtable_header * header, const unsigned long end)
255 {
256 struct acpi_madt_local_apic *processor = NULL;
257
258 processor = (struct acpi_madt_local_apic *)header;
259
260 if (BAD_MADT_ENTRY(processor, end))
261 return -EINVAL;
262
263 acpi_table_print_madt_entry(header);
264
265 /*
266 * We need to register disabled CPU as well to permit
267 * counting disabled CPUs. This allows us to size
268 * cpus_possible_map more accurately, to permit
269 * to not preallocating memory for all NR_CPUS
270 * when we use CPU hotplug.
271 */
272 acpi_register_lapic(processor->id, /* APIC ID */
273 processor->lapic_flags & ACPI_MADT_ENABLED);
274
275 return 0;
276 }
277
278 static int __init
279 acpi_parse_sapic(struct acpi_subtable_header *header, const unsigned long end)
280 {
281 struct acpi_madt_local_sapic *processor = NULL;
282
283 processor = (struct acpi_madt_local_sapic *)header;
284
285 if (BAD_MADT_ENTRY(processor, end))
286 return -EINVAL;
287
288 acpi_table_print_madt_entry(header);
289
290 acpi_register_lapic((processor->id << 8) | processor->eid,/* APIC ID */
291 processor->lapic_flags & ACPI_MADT_ENABLED);
292
293 return 0;
294 }
295
296 static int __init
297 acpi_parse_lapic_addr_ovr(struct acpi_subtable_header * header,
298 const unsigned long end)
299 {
300 struct acpi_madt_local_apic_override *lapic_addr_ovr = NULL;
301
302 lapic_addr_ovr = (struct acpi_madt_local_apic_override *)header;
303
304 if (BAD_MADT_ENTRY(lapic_addr_ovr, end))
305 return -EINVAL;
306
307 acpi_lapic_addr = lapic_addr_ovr->address;
308
309 return 0;
310 }
311
312 static int __init
313 acpi_parse_x2apic_nmi(struct acpi_subtable_header *header,
314 const unsigned long end)
315 {
316 struct acpi_madt_local_x2apic_nmi *x2apic_nmi = NULL;
317
318 x2apic_nmi = (struct acpi_madt_local_x2apic_nmi *)header;
319
320 if (BAD_MADT_ENTRY(x2apic_nmi, end))
321 return -EINVAL;
322
323 acpi_table_print_madt_entry(header);
324
325 if (x2apic_nmi->lint != 1)
326 printk(KERN_WARNING PREFIX "NMI not connected to LINT 1!\n");
327
328 return 0;
329 }
330
331 static int __init
332 acpi_parse_lapic_nmi(struct acpi_subtable_header * header, const unsigned long end)
333 {
334 struct acpi_madt_local_apic_nmi *lapic_nmi = NULL;
335
336 lapic_nmi = (struct acpi_madt_local_apic_nmi *)header;
337
338 if (BAD_MADT_ENTRY(lapic_nmi, end))
339 return -EINVAL;
340
341 acpi_table_print_madt_entry(header);
342
343 if (lapic_nmi->lint != 1)
344 printk(KERN_WARNING PREFIX "NMI not connected to LINT 1!\n");
345
346 return 0;
347 }
348
349 #endif /*CONFIG_X86_LOCAL_APIC */
350
351 #ifdef CONFIG_X86_IO_APIC
352
353 static int __init
354 acpi_parse_ioapic(struct acpi_subtable_header * header, const unsigned long end)
355 {
356 struct acpi_madt_io_apic *ioapic = NULL;
357
358 ioapic = (struct acpi_madt_io_apic *)header;
359
360 if (BAD_MADT_ENTRY(ioapic, end))
361 return -EINVAL;
362
363 acpi_table_print_madt_entry(header);
364
365 mp_register_ioapic(ioapic->id,
366 ioapic->address, ioapic->global_irq_base);
367
368 return 0;
369 }
370
371 /*
372 * Parse Interrupt Source Override for the ACPI SCI
373 */
374 static void __init acpi_sci_ioapic_setup(u8 bus_irq, u16 polarity, u16 trigger, u32 gsi)
375 {
376 if (trigger == 0) /* compatible SCI trigger is level */
377 trigger = 3;
378
379 if (polarity == 0) /* compatible SCI polarity is low */
380 polarity = 3;
381
382 /* Command-line over-ride via acpi_sci= */
383 if (acpi_sci_flags & ACPI_MADT_TRIGGER_MASK)
384 trigger = (acpi_sci_flags & ACPI_MADT_TRIGGER_MASK) >> 2;
385
386 if (acpi_sci_flags & ACPI_MADT_POLARITY_MASK)
387 polarity = acpi_sci_flags & ACPI_MADT_POLARITY_MASK;
388
389 /*
390 * mp_config_acpi_legacy_irqs() already setup IRQs < 16
391 * If GSI is < 16, this will update its flags,
392 * else it will create a new mp_irqs[] entry.
393 */
394 mp_override_legacy_irq(bus_irq, polarity, trigger, gsi);
395
396 /*
397 * stash over-ride to indicate we've been here
398 * and for later update of acpi_gbl_FADT
399 */
400 acpi_sci_override_gsi = gsi;
401 return;
402 }
403
404 static int __init
405 acpi_parse_int_src_ovr(struct acpi_subtable_header * header,
406 const unsigned long end)
407 {
408 struct acpi_madt_interrupt_override *intsrc = NULL;
409
410 intsrc = (struct acpi_madt_interrupt_override *)header;
411
412 if (BAD_MADT_ENTRY(intsrc, end))
413 return -EINVAL;
414
415 acpi_table_print_madt_entry(header);
416
417 if (intsrc->source_irq == acpi_gbl_FADT.sci_interrupt) {
418 acpi_sci_ioapic_setup(intsrc->source_irq,
419 intsrc->inti_flags & ACPI_MADT_POLARITY_MASK,
420 (intsrc->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2,
421 intsrc->global_irq);
422 return 0;
423 }
424
425 if (intsrc->source_irq == 0) {
426 if (acpi_skip_timer_override) {
427 printk(PREFIX "BIOS IRQ0 override ignored.\n");
428 return 0;
429 }
430
431 if ((intsrc->global_irq == 2) && acpi_fix_pin2_polarity
432 && (intsrc->inti_flags & ACPI_MADT_POLARITY_MASK)) {
433 intsrc->inti_flags &= ~ACPI_MADT_POLARITY_MASK;
434 printk(PREFIX "BIOS IRQ0 pin2 override: forcing polarity to high active.\n");
435 }
436 }
437
438 mp_override_legacy_irq(intsrc->source_irq,
439 intsrc->inti_flags & ACPI_MADT_POLARITY_MASK,
440 (intsrc->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2,
441 intsrc->global_irq);
442
443 return 0;
444 }
445
446 static int __init
447 acpi_parse_nmi_src(struct acpi_subtable_header * header, const unsigned long end)
448 {
449 struct acpi_madt_nmi_source *nmi_src = NULL;
450
451 nmi_src = (struct acpi_madt_nmi_source *)header;
452
453 if (BAD_MADT_ENTRY(nmi_src, end))
454 return -EINVAL;
455
456 acpi_table_print_madt_entry(header);
457
458 /* TBD: Support nimsrc entries? */
459
460 return 0;
461 }
462
463 #endif /* CONFIG_X86_IO_APIC */
464
465 /*
466 * acpi_pic_sci_set_trigger()
467 *
468 * use ELCR to set PIC-mode trigger type for SCI
469 *
470 * If a PIC-mode SCI is not recognized or gives spurious IRQ7's
471 * it may require Edge Trigger -- use "acpi_sci=edge"
472 *
473 * Port 0x4d0-4d1 are ECLR1 and ECLR2, the Edge/Level Control Registers
474 * for the 8259 PIC. bit[n] = 1 means irq[n] is Level, otherwise Edge.
475 * ECLR1 is IRQs 0-7 (IRQ 0, 1, 2 must be 0)
476 * ECLR2 is IRQs 8-15 (IRQ 8, 13 must be 0)
477 */
478
479 void __init acpi_pic_sci_set_trigger(unsigned int irq, u16 trigger)
480 {
481 unsigned int mask = 1 << irq;
482 unsigned int old, new;
483
484 /* Real old ELCR mask */
485 old = inb(0x4d0) | (inb(0x4d1) << 8);
486
487 /*
488 * If we use ACPI to set PCI IRQs, then we should clear ELCR
489 * since we will set it correctly as we enable the PCI irq
490 * routing.
491 */
492 new = acpi_noirq ? old : 0;
493
494 /*
495 * Update SCI information in the ELCR, it isn't in the PCI
496 * routing tables..
497 */
498 switch (trigger) {
499 case 1: /* Edge - clear */
500 new &= ~mask;
501 break;
502 case 3: /* Level - set */
503 new |= mask;
504 break;
505 }
506
507 if (old == new)
508 return;
509
510 printk(PREFIX "setting ELCR to %04x (from %04x)\n", new, old);
511 outb(new, 0x4d0);
512 outb(new >> 8, 0x4d1);
513 }
514
515 int acpi_gsi_to_irq(u32 gsi, unsigned int *irq)
516 {
517 *irq = gsi_to_irq(gsi);
518
519 #ifdef CONFIG_X86_IO_APIC
520 if (acpi_irq_model == ACPI_IRQ_MODEL_IOAPIC)
521 setup_IO_APIC_irq_extra(gsi);
522 #endif
523
524 return 0;
525 }
526 EXPORT_SYMBOL_GPL(acpi_gsi_to_irq);
527
528 int acpi_isa_irq_to_gsi(unsigned isa_irq, u32 *gsi)
529 {
530 if (isa_irq >= 16)
531 return -1;
532 *gsi = irq_to_gsi(isa_irq);
533 return 0;
534 }
535
536 static int acpi_register_gsi_pic(struct device *dev, u32 gsi,
537 int trigger, int polarity)
538 {
539 #ifdef CONFIG_PCI
540 /*
541 * Make sure all (legacy) PCI IRQs are set as level-triggered.
542 */
543 if (trigger == ACPI_LEVEL_SENSITIVE)
544 eisa_set_level_irq(gsi);
545 #endif
546
547 return gsi;
548 }
549
550 static int acpi_register_gsi_ioapic(struct device *dev, u32 gsi,
551 int trigger, int polarity)
552 {
553 #ifdef CONFIG_X86_IO_APIC
554 gsi = mp_register_gsi(dev, gsi, trigger, polarity);
555 #endif
556
557 return gsi;
558 }
559
560 int (*__acpi_register_gsi)(struct device *dev, u32 gsi,
561 int trigger, int polarity) = acpi_register_gsi_pic;
562
563 #ifdef CONFIG_ACPI_SLEEP
564 int (*acpi_suspend_lowlevel)(void) = x86_acpi_suspend_lowlevel;
565 #else
566 int (*acpi_suspend_lowlevel)(void);
567 #endif
568
569 /*
570 * success: return IRQ number (>=0)
571 * failure: return < 0
572 */
573 int acpi_register_gsi(struct device *dev, u32 gsi, int trigger, int polarity)
574 {
575 unsigned int irq;
576 unsigned int plat_gsi = gsi;
577
578 plat_gsi = (*__acpi_register_gsi)(dev, gsi, trigger, polarity);
579 irq = gsi_to_irq(plat_gsi);
580
581 return irq;
582 }
583 EXPORT_SYMBOL_GPL(acpi_register_gsi);
584
585 void acpi_unregister_gsi(u32 gsi)
586 {
587 }
588 EXPORT_SYMBOL_GPL(acpi_unregister_gsi);
589
590 void __init acpi_set_irq_model_pic(void)
591 {
592 acpi_irq_model = ACPI_IRQ_MODEL_PIC;
593 __acpi_register_gsi = acpi_register_gsi_pic;
594 acpi_ioapic = 0;
595 }
596
597 void __init acpi_set_irq_model_ioapic(void)
598 {
599 acpi_irq_model = ACPI_IRQ_MODEL_IOAPIC;
600 __acpi_register_gsi = acpi_register_gsi_ioapic;
601 acpi_ioapic = 1;
602 }
603
604 /*
605 * ACPI based hotplug support for CPU
606 */
607 #ifdef CONFIG_ACPI_HOTPLUG_CPU
608 #include <acpi/processor.h>
609
610 static void acpi_map_cpu2node(acpi_handle handle, int cpu, int physid)
611 {
612 #ifdef CONFIG_ACPI_NUMA
613 int nid;
614
615 nid = acpi_get_node(handle);
616 if (nid != -1) {
617 set_apicid_to_node(physid, nid);
618 numa_set_node(cpu, nid);
619 }
620 #endif
621 }
622
623 static int _acpi_map_lsapic(acpi_handle handle, int physid, int *pcpu)
624 {
625 int cpu;
626
627 cpu = acpi_register_lapic(physid, ACPI_MADT_ENABLED);
628 if (cpu < 0) {
629 pr_info(PREFIX "Unable to map lapic to logical cpu number\n");
630 return cpu;
631 }
632
633 acpi_processor_set_pdc(handle);
634 acpi_map_cpu2node(handle, cpu, physid);
635
636 *pcpu = cpu;
637 return 0;
638 }
639
640 /* wrapper to silence section mismatch warning */
641 int __ref acpi_map_lsapic(acpi_handle handle, int physid, int *pcpu)
642 {
643 return _acpi_map_lsapic(handle, physid, pcpu);
644 }
645 EXPORT_SYMBOL(acpi_map_lsapic);
646
647 int acpi_unmap_lsapic(int cpu)
648 {
649 #ifdef CONFIG_ACPI_NUMA
650 set_apicid_to_node(per_cpu(x86_cpu_to_apicid, cpu), NUMA_NO_NODE);
651 #endif
652
653 per_cpu(x86_cpu_to_apicid, cpu) = -1;
654 set_cpu_present(cpu, false);
655 num_processors--;
656
657 return (0);
658 }
659
660 EXPORT_SYMBOL(acpi_unmap_lsapic);
661 #endif /* CONFIG_ACPI_HOTPLUG_CPU */
662
663 int acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base)
664 {
665 /* TBD */
666 return -EINVAL;
667 }
668
669 EXPORT_SYMBOL(acpi_register_ioapic);
670
671 int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base)
672 {
673 /* TBD */
674 return -EINVAL;
675 }
676
677 EXPORT_SYMBOL(acpi_unregister_ioapic);
678
679 static int __init acpi_parse_sbf(struct acpi_table_header *table)
680 {
681 struct acpi_table_boot *sb;
682
683 sb = (struct acpi_table_boot *)table;
684 if (!sb) {
685 printk(KERN_WARNING PREFIX "Unable to map SBF\n");
686 return -ENODEV;
687 }
688
689 sbf_port = sb->cmos_index; /* Save CMOS port */
690
691 return 0;
692 }
693
694 #ifdef CONFIG_HPET_TIMER
695 #include <asm/hpet.h>
696
697 static struct resource *hpet_res __initdata;
698
699 static int __init acpi_parse_hpet(struct acpi_table_header *table)
700 {
701 struct acpi_table_hpet *hpet_tbl;
702
703 hpet_tbl = (struct acpi_table_hpet *)table;
704 if (!hpet_tbl) {
705 printk(KERN_WARNING PREFIX "Unable to map HPET\n");
706 return -ENODEV;
707 }
708
709 if (hpet_tbl->address.space_id != ACPI_SPACE_MEM) {
710 printk(KERN_WARNING PREFIX "HPET timers must be located in "
711 "memory.\n");
712 return -1;
713 }
714
715 hpet_address = hpet_tbl->address.address;
716 hpet_blockid = hpet_tbl->sequence;
717
718 /*
719 * Some broken BIOSes advertise HPET at 0x0. We really do not
720 * want to allocate a resource there.
721 */
722 if (!hpet_address) {
723 printk(KERN_WARNING PREFIX
724 "HPET id: %#x base: %#lx is invalid\n",
725 hpet_tbl->id, hpet_address);
726 return 0;
727 }
728 #ifdef CONFIG_X86_64
729 /*
730 * Some even more broken BIOSes advertise HPET at
731 * 0xfed0000000000000 instead of 0xfed00000. Fix it up and add
732 * some noise:
733 */
734 if (hpet_address == 0xfed0000000000000UL) {
735 if (!hpet_force_user) {
736 printk(KERN_WARNING PREFIX "HPET id: %#x "
737 "base: 0xfed0000000000000 is bogus\n "
738 "try hpet=force on the kernel command line to "
739 "fix it up to 0xfed00000.\n", hpet_tbl->id);
740 hpet_address = 0;
741 return 0;
742 }
743 printk(KERN_WARNING PREFIX
744 "HPET id: %#x base: 0xfed0000000000000 fixed up "
745 "to 0xfed00000.\n", hpet_tbl->id);
746 hpet_address >>= 32;
747 }
748 #endif
749 printk(KERN_INFO PREFIX "HPET id: %#x base: %#lx\n",
750 hpet_tbl->id, hpet_address);
751
752 /*
753 * Allocate and initialize the HPET firmware resource for adding into
754 * the resource tree during the lateinit timeframe.
755 */
756 #define HPET_RESOURCE_NAME_SIZE 9
757 hpet_res = alloc_bootmem(sizeof(*hpet_res) + HPET_RESOURCE_NAME_SIZE);
758
759 hpet_res->name = (void *)&hpet_res[1];
760 hpet_res->flags = IORESOURCE_MEM;
761 snprintf((char *)hpet_res->name, HPET_RESOURCE_NAME_SIZE, "HPET %u",
762 hpet_tbl->sequence);
763
764 hpet_res->start = hpet_address;
765 hpet_res->end = hpet_address + (1 * 1024) - 1;
766
767 return 0;
768 }
769
770 /*
771 * hpet_insert_resource inserts the HPET resources used into the resource
772 * tree.
773 */
774 static __init int hpet_insert_resource(void)
775 {
776 if (!hpet_res)
777 return 1;
778
779 return insert_resource(&iomem_resource, hpet_res);
780 }
781
782 late_initcall(hpet_insert_resource);
783
784 #else
785 #define acpi_parse_hpet NULL
786 #endif
787
788 static int __init acpi_parse_fadt(struct acpi_table_header *table)
789 {
790
791 #ifdef CONFIG_X86_PM_TIMER
792 /* detect the location of the ACPI PM Timer */
793 if (acpi_gbl_FADT.header.revision >= FADT2_REVISION_ID) {
794 /* FADT rev. 2 */
795 if (acpi_gbl_FADT.xpm_timer_block.space_id !=
796 ACPI_ADR_SPACE_SYSTEM_IO)
797 return 0;
798
799 pmtmr_ioport = acpi_gbl_FADT.xpm_timer_block.address;
800 /*
801 * "X" fields are optional extensions to the original V1.0
802 * fields, so we must selectively expand V1.0 fields if the
803 * corresponding X field is zero.
804 */
805 if (!pmtmr_ioport)
806 pmtmr_ioport = acpi_gbl_FADT.pm_timer_block;
807 } else {
808 /* FADT rev. 1 */
809 pmtmr_ioport = acpi_gbl_FADT.pm_timer_block;
810 }
811 if (pmtmr_ioport)
812 printk(KERN_INFO PREFIX "PM-Timer IO Port: %#x\n",
813 pmtmr_ioport);
814 #endif
815 return 0;
816 }
817
818 #ifdef CONFIG_X86_LOCAL_APIC
819 /*
820 * Parse LAPIC entries in MADT
821 * returns 0 on success, < 0 on error
822 */
823
824 static int __init early_acpi_parse_madt_lapic_addr_ovr(void)
825 {
826 int count;
827
828 if (!cpu_has_apic)
829 return -ENODEV;
830
831 /*
832 * Note that the LAPIC address is obtained from the MADT (32-bit value)
833 * and (optionally) overriden by a LAPIC_ADDR_OVR entry (64-bit value).
834 */
835
836 count =
837 acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE,
838 acpi_parse_lapic_addr_ovr, 0);
839 if (count < 0) {
840 printk(KERN_ERR PREFIX
841 "Error parsing LAPIC address override entry\n");
842 return count;
843 }
844
845 register_lapic_address(acpi_lapic_addr);
846
847 return count;
848 }
849
850 static int __init acpi_parse_madt_lapic_entries(void)
851 {
852 int count;
853 int x2count = 0;
854
855 if (!cpu_has_apic)
856 return -ENODEV;
857
858 /*
859 * Note that the LAPIC address is obtained from the MADT (32-bit value)
860 * and (optionally) overriden by a LAPIC_ADDR_OVR entry (64-bit value).
861 */
862
863 count =
864 acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE,
865 acpi_parse_lapic_addr_ovr, 0);
866 if (count < 0) {
867 printk(KERN_ERR PREFIX
868 "Error parsing LAPIC address override entry\n");
869 return count;
870 }
871
872 register_lapic_address(acpi_lapic_addr);
873
874 count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_SAPIC,
875 acpi_parse_sapic, MAX_LOCAL_APIC);
876
877 if (!count) {
878 x2count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_X2APIC,
879 acpi_parse_x2apic, MAX_LOCAL_APIC);
880 count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC,
881 acpi_parse_lapic, MAX_LOCAL_APIC);
882 }
883 if (!count && !x2count) {
884 printk(KERN_ERR PREFIX "No LAPIC entries present\n");
885 /* TBD: Cleanup to allow fallback to MPS */
886 return -ENODEV;
887 } else if (count < 0 || x2count < 0) {
888 printk(KERN_ERR PREFIX "Error parsing LAPIC entry\n");
889 /* TBD: Cleanup to allow fallback to MPS */
890 return count;
891 }
892
893 x2count =
894 acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_X2APIC_NMI,
895 acpi_parse_x2apic_nmi, 0);
896 count =
897 acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_NMI, acpi_parse_lapic_nmi, 0);
898 if (count < 0 || x2count < 0) {
899 printk(KERN_ERR PREFIX "Error parsing LAPIC NMI entry\n");
900 /* TBD: Cleanup to allow fallback to MPS */
901 return count;
902 }
903 return 0;
904 }
905 #endif /* CONFIG_X86_LOCAL_APIC */
906
907 #ifdef CONFIG_X86_IO_APIC
908 #define MP_ISA_BUS 0
909
910 #ifdef CONFIG_X86_ES7000
911 extern int es7000_plat;
912 #endif
913
914 void __init mp_override_legacy_irq(u8 bus_irq, u8 polarity, u8 trigger, u32 gsi)
915 {
916 int ioapic;
917 int pin;
918 struct mpc_intsrc mp_irq;
919
920 /*
921 * Convert 'gsi' to 'ioapic.pin'.
922 */
923 ioapic = mp_find_ioapic(gsi);
924 if (ioapic < 0)
925 return;
926 pin = mp_find_ioapic_pin(ioapic, gsi);
927
928 /*
929 * TBD: This check is for faulty timer entries, where the override
930 * erroneously sets the trigger to level, resulting in a HUGE
931 * increase of timer interrupts!
932 */
933 if ((bus_irq == 0) && (trigger == 3))
934 trigger = 1;
935
936 mp_irq.type = MP_INTSRC;
937 mp_irq.irqtype = mp_INT;
938 mp_irq.irqflag = (trigger << 2) | polarity;
939 mp_irq.srcbus = MP_ISA_BUS;
940 mp_irq.srcbusirq = bus_irq; /* IRQ */
941 mp_irq.dstapic = mpc_ioapic_id(ioapic); /* APIC ID */
942 mp_irq.dstirq = pin; /* INTIN# */
943
944 mp_save_irq(&mp_irq);
945
946 isa_irq_to_gsi[bus_irq] = gsi;
947 }
948
949 void __init mp_config_acpi_legacy_irqs(void)
950 {
951 int i;
952 struct mpc_intsrc mp_irq;
953
954 #ifdef CONFIG_EISA
955 /*
956 * Fabricate the legacy ISA bus (bus #31).
957 */
958 mp_bus_id_to_type[MP_ISA_BUS] = MP_BUS_ISA;
959 #endif
960 set_bit(MP_ISA_BUS, mp_bus_not_pci);
961 pr_debug("Bus #%d is ISA\n", MP_ISA_BUS);
962
963 #ifdef CONFIG_X86_ES7000
964 /*
965 * Older generations of ES7000 have no legacy identity mappings
966 */
967 if (es7000_plat == 1)
968 return;
969 #endif
970
971 /*
972 * Use the default configuration for the IRQs 0-15. Unless
973 * overridden by (MADT) interrupt source override entries.
974 */
975 for (i = 0; i < 16; i++) {
976 int ioapic, pin;
977 unsigned int dstapic;
978 int idx;
979 u32 gsi;
980
981 /* Locate the gsi that irq i maps to. */
982 if (acpi_isa_irq_to_gsi(i, &gsi))
983 continue;
984
985 /*
986 * Locate the IOAPIC that manages the ISA IRQ.
987 */
988 ioapic = mp_find_ioapic(gsi);
989 if (ioapic < 0)
990 continue;
991 pin = mp_find_ioapic_pin(ioapic, gsi);
992 dstapic = mpc_ioapic_id(ioapic);
993
994 for (idx = 0; idx < mp_irq_entries; idx++) {
995 struct mpc_intsrc *irq = mp_irqs + idx;
996
997 /* Do we already have a mapping for this ISA IRQ? */
998 if (irq->srcbus == MP_ISA_BUS && irq->srcbusirq == i)
999 break;
1000
1001 /* Do we already have a mapping for this IOAPIC pin */
1002 if (irq->dstapic == dstapic && irq->dstirq == pin)
1003 break;
1004 }
1005
1006 if (idx != mp_irq_entries) {
1007 printk(KERN_DEBUG "ACPI: IRQ%d used by override.\n", i);
1008 continue; /* IRQ already used */
1009 }
1010
1011 mp_irq.type = MP_INTSRC;
1012 mp_irq.irqflag = 0; /* Conforming */
1013 mp_irq.srcbus = MP_ISA_BUS;
1014 mp_irq.dstapic = dstapic;
1015 mp_irq.irqtype = mp_INT;
1016 mp_irq.srcbusirq = i; /* Identity mapped */
1017 mp_irq.dstirq = pin;
1018
1019 mp_save_irq(&mp_irq);
1020 }
1021 }
1022
1023 static int mp_config_acpi_gsi(struct device *dev, u32 gsi, int trigger,
1024 int polarity)
1025 {
1026 #ifdef CONFIG_X86_MPPARSE
1027 struct mpc_intsrc mp_irq;
1028 struct pci_dev *pdev;
1029 unsigned char number;
1030 unsigned int devfn;
1031 int ioapic;
1032 u8 pin;
1033
1034 if (!acpi_ioapic)
1035 return 0;
1036 if (!dev || !dev_is_pci(dev))
1037 return 0;
1038
1039 pdev = to_pci_dev(dev);
1040 number = pdev->bus->number;
1041 devfn = pdev->devfn;
1042 pin = pdev->pin;
1043 /* print the entry should happen on mptable identically */
1044 mp_irq.type = MP_INTSRC;
1045 mp_irq.irqtype = mp_INT;
1046 mp_irq.irqflag = (trigger == ACPI_EDGE_SENSITIVE ? 4 : 0x0c) |
1047 (polarity == ACPI_ACTIVE_HIGH ? 1 : 3);
1048 mp_irq.srcbus = number;
1049 mp_irq.srcbusirq = (((devfn >> 3) & 0x1f) << 2) | ((pin - 1) & 3);
1050 ioapic = mp_find_ioapic(gsi);
1051 mp_irq.dstapic = mpc_ioapic_id(ioapic);
1052 mp_irq.dstirq = mp_find_ioapic_pin(ioapic, gsi);
1053
1054 mp_save_irq(&mp_irq);
1055 #endif
1056 return 0;
1057 }
1058
1059 int mp_register_gsi(struct device *dev, u32 gsi, int trigger, int polarity)
1060 {
1061 int ioapic;
1062 int ioapic_pin;
1063 struct io_apic_irq_attr irq_attr;
1064 int ret;
1065
1066 if (acpi_irq_model != ACPI_IRQ_MODEL_IOAPIC)
1067 return gsi;
1068
1069 /* Don't set up the ACPI SCI because it's already set up */
1070 if (acpi_gbl_FADT.sci_interrupt == gsi)
1071 return gsi;
1072
1073 ioapic = mp_find_ioapic(gsi);
1074 if (ioapic < 0) {
1075 printk(KERN_WARNING "No IOAPIC for GSI %u\n", gsi);
1076 return gsi;
1077 }
1078
1079 ioapic_pin = mp_find_ioapic_pin(ioapic, gsi);
1080
1081 if (ioapic_pin > MP_MAX_IOAPIC_PIN) {
1082 printk(KERN_ERR "Invalid reference to IOAPIC pin "
1083 "%d-%d\n", mpc_ioapic_id(ioapic),
1084 ioapic_pin);
1085 return gsi;
1086 }
1087
1088 if (enable_update_mptable)
1089 mp_config_acpi_gsi(dev, gsi, trigger, polarity);
1090
1091 set_io_apic_irq_attr(&irq_attr, ioapic, ioapic_pin,
1092 trigger == ACPI_EDGE_SENSITIVE ? 0 : 1,
1093 polarity == ACPI_ACTIVE_HIGH ? 0 : 1);
1094 ret = io_apic_set_pci_routing(dev, gsi_to_irq(gsi), &irq_attr);
1095 if (ret < 0)
1096 gsi = INT_MIN;
1097
1098 return gsi;
1099 }
1100
1101 /*
1102 * Parse IOAPIC related entries in MADT
1103 * returns 0 on success, < 0 on error
1104 */
1105 static int __init acpi_parse_madt_ioapic_entries(void)
1106 {
1107 int count;
1108
1109 /*
1110 * ACPI interpreter is required to complete interrupt setup,
1111 * so if it is off, don't enumerate the io-apics with ACPI.
1112 * If MPS is present, it will handle them,
1113 * otherwise the system will stay in PIC mode
1114 */
1115 if (acpi_disabled || acpi_noirq)
1116 return -ENODEV;
1117
1118 if (!cpu_has_apic)
1119 return -ENODEV;
1120
1121 /*
1122 * if "noapic" boot option, don't look for IO-APICs
1123 */
1124 if (skip_ioapic_setup) {
1125 printk(KERN_INFO PREFIX "Skipping IOAPIC probe "
1126 "due to 'noapic' option.\n");
1127 return -ENODEV;
1128 }
1129
1130 count =
1131 acpi_table_parse_madt(ACPI_MADT_TYPE_IO_APIC, acpi_parse_ioapic,
1132 MAX_IO_APICS);
1133 if (!count) {
1134 printk(KERN_ERR PREFIX "No IOAPIC entries present\n");
1135 return -ENODEV;
1136 } else if (count < 0) {
1137 printk(KERN_ERR PREFIX "Error parsing IOAPIC entry\n");
1138 return count;
1139 }
1140
1141 count =
1142 acpi_table_parse_madt(ACPI_MADT_TYPE_INTERRUPT_OVERRIDE, acpi_parse_int_src_ovr,
1143 nr_irqs);
1144 if (count < 0) {
1145 printk(KERN_ERR PREFIX
1146 "Error parsing interrupt source overrides entry\n");
1147 /* TBD: Cleanup to allow fallback to MPS */
1148 return count;
1149 }
1150
1151 /*
1152 * If BIOS did not supply an INT_SRC_OVR for the SCI
1153 * pretend we got one so we can set the SCI flags.
1154 */
1155 if (!acpi_sci_override_gsi)
1156 acpi_sci_ioapic_setup(acpi_gbl_FADT.sci_interrupt, 0, 0,
1157 acpi_gbl_FADT.sci_interrupt);
1158
1159 /* Fill in identity legacy mappings where no override */
1160 mp_config_acpi_legacy_irqs();
1161
1162 count =
1163 acpi_table_parse_madt(ACPI_MADT_TYPE_NMI_SOURCE, acpi_parse_nmi_src,
1164 nr_irqs);
1165 if (count < 0) {
1166 printk(KERN_ERR PREFIX "Error parsing NMI SRC entry\n");
1167 /* TBD: Cleanup to allow fallback to MPS */
1168 return count;
1169 }
1170
1171 return 0;
1172 }
1173 #else
1174 static inline int acpi_parse_madt_ioapic_entries(void)
1175 {
1176 return -1;
1177 }
1178 #endif /* !CONFIG_X86_IO_APIC */
1179
1180 static void __init early_acpi_process_madt(void)
1181 {
1182 #ifdef CONFIG_X86_LOCAL_APIC
1183 int error;
1184
1185 if (!acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) {
1186
1187 /*
1188 * Parse MADT LAPIC entries
1189 */
1190 error = early_acpi_parse_madt_lapic_addr_ovr();
1191 if (!error) {
1192 acpi_lapic = 1;
1193 smp_found_config = 1;
1194 }
1195 if (error == -EINVAL) {
1196 /*
1197 * Dell Precision Workstation 410, 610 come here.
1198 */
1199 printk(KERN_ERR PREFIX
1200 "Invalid BIOS MADT, disabling ACPI\n");
1201 disable_acpi();
1202 }
1203 }
1204 #endif
1205 }
1206
1207 static void __init acpi_process_madt(void)
1208 {
1209 #ifdef CONFIG_X86_LOCAL_APIC
1210 int error;
1211
1212 if (!acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) {
1213
1214 /*
1215 * Parse MADT LAPIC entries
1216 */
1217 error = acpi_parse_madt_lapic_entries();
1218 if (!error) {
1219 acpi_lapic = 1;
1220
1221 /*
1222 * Parse MADT IO-APIC entries
1223 */
1224 error = acpi_parse_madt_ioapic_entries();
1225 if (!error) {
1226 acpi_set_irq_model_ioapic();
1227
1228 smp_found_config = 1;
1229 }
1230 }
1231 if (error == -EINVAL) {
1232 /*
1233 * Dell Precision Workstation 410, 610 come here.
1234 */
1235 printk(KERN_ERR PREFIX
1236 "Invalid BIOS MADT, disabling ACPI\n");
1237 disable_acpi();
1238 }
1239 } else {
1240 /*
1241 * ACPI found no MADT, and so ACPI wants UP PIC mode.
1242 * In the event an MPS table was found, forget it.
1243 * Boot with "acpi=off" to use MPS on such a system.
1244 */
1245 if (smp_found_config) {
1246 printk(KERN_WARNING PREFIX
1247 "No APIC-table, disabling MPS\n");
1248 smp_found_config = 0;
1249 }
1250 }
1251
1252 /*
1253 * ACPI supports both logical (e.g. Hyper-Threading) and physical
1254 * processors, where MPS only supports physical.
1255 */
1256 if (acpi_lapic && acpi_ioapic)
1257 printk(KERN_INFO "Using ACPI (MADT) for SMP configuration "
1258 "information\n");
1259 else if (acpi_lapic)
1260 printk(KERN_INFO "Using ACPI for processor (LAPIC) "
1261 "configuration information\n");
1262 #endif
1263 return;
1264 }
1265
1266 static int __init disable_acpi_irq(const struct dmi_system_id *d)
1267 {
1268 if (!acpi_force) {
1269 printk(KERN_NOTICE "%s detected: force use of acpi=noirq\n",
1270 d->ident);
1271 acpi_noirq_set();
1272 }
1273 return 0;
1274 }
1275
1276 static int __init disable_acpi_pci(const struct dmi_system_id *d)
1277 {
1278 if (!acpi_force) {
1279 printk(KERN_NOTICE "%s detected: force use of pci=noacpi\n",
1280 d->ident);
1281 acpi_disable_pci();
1282 }
1283 return 0;
1284 }
1285
1286 static int __init dmi_disable_acpi(const struct dmi_system_id *d)
1287 {
1288 if (!acpi_force) {
1289 printk(KERN_NOTICE "%s detected: acpi off\n", d->ident);
1290 disable_acpi();
1291 } else {
1292 printk(KERN_NOTICE
1293 "Warning: DMI blacklist says broken, but acpi forced\n");
1294 }
1295 return 0;
1296 }
1297
1298 /*
1299 * Force ignoring BIOS IRQ0 override
1300 */
1301 static int __init dmi_ignore_irq0_timer_override(const struct dmi_system_id *d)
1302 {
1303 if (!acpi_skip_timer_override) {
1304 pr_notice("%s detected: Ignoring BIOS IRQ0 override\n",
1305 d->ident);
1306 acpi_skip_timer_override = 1;
1307 }
1308 return 0;
1309 }
1310
1311 /*
1312 * If your system is blacklisted here, but you find that acpi=force
1313 * works for you, please contact linux-acpi@vger.kernel.org
1314 */
1315 static struct dmi_system_id __initdata acpi_dmi_table[] = {
1316 /*
1317 * Boxes that need ACPI disabled
1318 */
1319 {
1320 .callback = dmi_disable_acpi,
1321 .ident = "IBM Thinkpad",
1322 .matches = {
1323 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
1324 DMI_MATCH(DMI_BOARD_NAME, "2629H1G"),
1325 },
1326 },
1327
1328 /*
1329 * Boxes that need ACPI PCI IRQ routing disabled
1330 */
1331 {
1332 .callback = disable_acpi_irq,
1333 .ident = "ASUS A7V",
1334 .matches = {
1335 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC"),
1336 DMI_MATCH(DMI_BOARD_NAME, "<A7V>"),
1337 /* newer BIOS, Revision 1011, does work */
1338 DMI_MATCH(DMI_BIOS_VERSION,
1339 "ASUS A7V ACPI BIOS Revision 1007"),
1340 },
1341 },
1342 {
1343 /*
1344 * Latest BIOS for IBM 600E (1.16) has bad pcinum
1345 * for LPC bridge, which is needed for the PCI
1346 * interrupt links to work. DSDT fix is in bug 5966.
1347 * 2645, 2646 model numbers are shared with 600/600E/600X
1348 */
1349 .callback = disable_acpi_irq,
1350 .ident = "IBM Thinkpad 600 Series 2645",
1351 .matches = {
1352 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
1353 DMI_MATCH(DMI_BOARD_NAME, "2645"),
1354 },
1355 },
1356 {
1357 .callback = disable_acpi_irq,
1358 .ident = "IBM Thinkpad 600 Series 2646",
1359 .matches = {
1360 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
1361 DMI_MATCH(DMI_BOARD_NAME, "2646"),
1362 },
1363 },
1364 /*
1365 * Boxes that need ACPI PCI IRQ routing and PCI scan disabled
1366 */
1367 { /* _BBN 0 bug */
1368 .callback = disable_acpi_pci,
1369 .ident = "ASUS PR-DLS",
1370 .matches = {
1371 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."),
1372 DMI_MATCH(DMI_BOARD_NAME, "PR-DLS"),
1373 DMI_MATCH(DMI_BIOS_VERSION,
1374 "ASUS PR-DLS ACPI BIOS Revision 1010"),
1375 DMI_MATCH(DMI_BIOS_DATE, "03/21/2003")
1376 },
1377 },
1378 {
1379 .callback = disable_acpi_pci,
1380 .ident = "Acer TravelMate 36x Laptop",
1381 .matches = {
1382 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
1383 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 360"),
1384 },
1385 },
1386 {}
1387 };
1388
1389 /* second table for DMI checks that should run after early-quirks */
1390 static struct dmi_system_id __initdata acpi_dmi_table_late[] = {
1391 /*
1392 * HP laptops which use a DSDT reporting as HP/SB400/10000,
1393 * which includes some code which overrides all temperature
1394 * trip points to 16C if the INTIN2 input of the I/O APIC
1395 * is enabled. This input is incorrectly designated the
1396 * ISA IRQ 0 via an interrupt source override even though
1397 * it is wired to the output of the master 8259A and INTIN0
1398 * is not connected at all. Force ignoring BIOS IRQ0
1399 * override in that cases.
1400 */
1401 {
1402 .callback = dmi_ignore_irq0_timer_override,
1403 .ident = "HP nx6115 laptop",
1404 .matches = {
1405 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1406 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6115"),
1407 },
1408 },
1409 {
1410 .callback = dmi_ignore_irq0_timer_override,
1411 .ident = "HP NX6125 laptop",
1412 .matches = {
1413 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1414 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6125"),
1415 },
1416 },
1417 {
1418 .callback = dmi_ignore_irq0_timer_override,
1419 .ident = "HP NX6325 laptop",
1420 .matches = {
1421 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1422 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6325"),
1423 },
1424 },
1425 {
1426 .callback = dmi_ignore_irq0_timer_override,
1427 .ident = "HP 6715b laptop",
1428 .matches = {
1429 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1430 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq 6715b"),
1431 },
1432 },
1433 {
1434 .callback = dmi_ignore_irq0_timer_override,
1435 .ident = "FUJITSU SIEMENS",
1436 .matches = {
1437 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
1438 DMI_MATCH(DMI_PRODUCT_NAME, "AMILO PRO V2030"),
1439 },
1440 },
1441 {}
1442 };
1443
1444 /*
1445 * acpi_boot_table_init() and acpi_boot_init()
1446 * called from setup_arch(), always.
1447 * 1. checksums all tables
1448 * 2. enumerates lapics
1449 * 3. enumerates io-apics
1450 *
1451 * acpi_table_init() is separate to allow reading SRAT without
1452 * other side effects.
1453 *
1454 * side effects of acpi_boot_init:
1455 * acpi_lapic = 1 if LAPIC found
1456 * acpi_ioapic = 1 if IOAPIC found
1457 * if (acpi_lapic && acpi_ioapic) smp_found_config = 1;
1458 * if acpi_blacklisted() acpi_disabled = 1;
1459 * acpi_irq_model=...
1460 * ...
1461 */
1462
1463 void __init acpi_boot_table_init(void)
1464 {
1465 dmi_check_system(acpi_dmi_table);
1466
1467 /*
1468 * If acpi_disabled, bail out
1469 */
1470 if (acpi_disabled)
1471 return;
1472
1473 /*
1474 * Initialize the ACPI boot-time table parser.
1475 */
1476 if (acpi_table_init()) {
1477 disable_acpi();
1478 return;
1479 }
1480
1481 acpi_table_parse(ACPI_SIG_BOOT, acpi_parse_sbf);
1482
1483 /*
1484 * blacklist may disable ACPI entirely
1485 */
1486 if (acpi_blacklisted()) {
1487 if (acpi_force) {
1488 printk(KERN_WARNING PREFIX "acpi=force override\n");
1489 } else {
1490 printk(KERN_WARNING PREFIX "Disabling ACPI support\n");
1491 disable_acpi();
1492 return;
1493 }
1494 }
1495 }
1496
1497 int __init early_acpi_boot_init(void)
1498 {
1499 /*
1500 * If acpi_disabled, bail out
1501 */
1502 if (acpi_disabled)
1503 return 1;
1504
1505 /*
1506 * Process the Multiple APIC Description Table (MADT), if present
1507 */
1508 early_acpi_process_madt();
1509
1510 return 0;
1511 }
1512
1513 int __init acpi_boot_init(void)
1514 {
1515 /* those are executed after early-quirks are executed */
1516 dmi_check_system(acpi_dmi_table_late);
1517
1518 /*
1519 * If acpi_disabled, bail out
1520 */
1521 if (acpi_disabled)
1522 return 1;
1523
1524 acpi_table_parse(ACPI_SIG_BOOT, acpi_parse_sbf);
1525
1526 /*
1527 * set sci_int and PM timer address
1528 */
1529 acpi_table_parse(ACPI_SIG_FADT, acpi_parse_fadt);
1530
1531 /*
1532 * Process the Multiple APIC Description Table (MADT), if present
1533 */
1534 acpi_process_madt();
1535
1536 acpi_table_parse(ACPI_SIG_HPET, acpi_parse_hpet);
1537
1538 if (!acpi_noirq)
1539 x86_init.pci.init = pci_acpi_init;
1540
1541 return 0;
1542 }
1543
1544 static int __init parse_acpi(char *arg)
1545 {
1546 if (!arg)
1547 return -EINVAL;
1548
1549 /* "acpi=off" disables both ACPI table parsing and interpreter */
1550 if (strcmp(arg, "off") == 0) {
1551 disable_acpi();
1552 }
1553 /* acpi=force to over-ride black-list */
1554 else if (strcmp(arg, "force") == 0) {
1555 acpi_force = 1;
1556 acpi_disabled = 0;
1557 }
1558 /* acpi=strict disables out-of-spec workarounds */
1559 else if (strcmp(arg, "strict") == 0) {
1560 acpi_strict = 1;
1561 }
1562 /* acpi=rsdt use RSDT instead of XSDT */
1563 else if (strcmp(arg, "rsdt") == 0) {
1564 acpi_gbl_do_not_use_xsdt = TRUE;
1565 }
1566 /* "acpi=noirq" disables ACPI interrupt routing */
1567 else if (strcmp(arg, "noirq") == 0) {
1568 acpi_noirq_set();
1569 }
1570 /* "acpi=copy_dsdt" copys DSDT */
1571 else if (strcmp(arg, "copy_dsdt") == 0) {
1572 acpi_gbl_copy_dsdt_locally = 1;
1573 }
1574 /* "acpi=nocmcff" disables FF mode for corrected errors */
1575 else if (strcmp(arg, "nocmcff") == 0) {
1576 acpi_disable_cmcff = 1;
1577 } else {
1578 /* Core will printk when we return error. */
1579 return -EINVAL;
1580 }
1581 return 0;
1582 }
1583 early_param("acpi", parse_acpi);
1584
1585 /* FIXME: Using pci= for an ACPI parameter is a travesty. */
1586 static int __init parse_pci(char *arg)
1587 {
1588 if (arg && strcmp(arg, "noacpi") == 0)
1589 acpi_disable_pci();
1590 return 0;
1591 }
1592 early_param("pci", parse_pci);
1593
1594 int __init acpi_mps_check(void)
1595 {
1596 #if defined(CONFIG_X86_LOCAL_APIC) && !defined(CONFIG_X86_MPPARSE)
1597 /* mptable code is not built-in*/
1598 if (acpi_disabled || acpi_noirq) {
1599 printk(KERN_WARNING "MPS support code is not built-in.\n"
1600 "Using acpi=off or acpi=noirq or pci=noacpi "
1601 "may have problem\n");
1602 return 1;
1603 }
1604 #endif
1605 return 0;
1606 }
1607
1608 #ifdef CONFIG_X86_IO_APIC
1609 static int __init parse_acpi_skip_timer_override(char *arg)
1610 {
1611 acpi_skip_timer_override = 1;
1612 return 0;
1613 }
1614 early_param("acpi_skip_timer_override", parse_acpi_skip_timer_override);
1615
1616 static int __init parse_acpi_use_timer_override(char *arg)
1617 {
1618 acpi_use_timer_override = 1;
1619 return 0;
1620 }
1621 early_param("acpi_use_timer_override", parse_acpi_use_timer_override);
1622 #endif /* CONFIG_X86_IO_APIC */
1623
1624 static int __init setup_acpi_sci(char *s)
1625 {
1626 if (!s)
1627 return -EINVAL;
1628 if (!strcmp(s, "edge"))
1629 acpi_sci_flags = ACPI_MADT_TRIGGER_EDGE |
1630 (acpi_sci_flags & ~ACPI_MADT_TRIGGER_MASK);
1631 else if (!strcmp(s, "level"))
1632 acpi_sci_flags = ACPI_MADT_TRIGGER_LEVEL |
1633 (acpi_sci_flags & ~ACPI_MADT_TRIGGER_MASK);
1634 else if (!strcmp(s, "high"))
1635 acpi_sci_flags = ACPI_MADT_POLARITY_ACTIVE_HIGH |
1636 (acpi_sci_flags & ~ACPI_MADT_POLARITY_MASK);
1637 else if (!strcmp(s, "low"))
1638 acpi_sci_flags = ACPI_MADT_POLARITY_ACTIVE_LOW |
1639 (acpi_sci_flags & ~ACPI_MADT_POLARITY_MASK);
1640 else
1641 return -EINVAL;
1642 return 0;
1643 }
1644 early_param("acpi_sci", setup_acpi_sci);
1645
1646 int __acpi_acquire_global_lock(unsigned int *lock)
1647 {
1648 unsigned int old, new, val;
1649 do {
1650 old = *lock;
1651 new = (((old & ~0x3) + 2) + ((old >> 1) & 0x1));
1652 val = cmpxchg(lock, old, new);
1653 } while (unlikely (val != old));
1654 return (new < 3) ? -1 : 0;
1655 }
1656
1657 int __acpi_release_global_lock(unsigned int *lock)
1658 {
1659 unsigned int old, new, val;
1660 do {
1661 old = *lock;
1662 new = old & ~0x3;
1663 val = cmpxchg(lock, old, new);
1664 } while (unlikely (val != old));
1665 return old & 0x1;
1666 }
1667
1668 void __init arch_reserve_mem_area(acpi_physical_address addr, size_t size)
1669 {
1670 e820_add_region(addr, size, E820_ACPI);
1671 update_e820();
1672 }
Linux kernel - Deliverables
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