projects / deliverable / linux.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
Merge branch 'for-linus' of git://git.open-osd.org/linux-open-osd
[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 static int __initdata acpi_force = 0;
48 u32 acpi_rsdt_forced;
49 int acpi_disabled;
50 EXPORT_SYMBOL(acpi_disabled);
51
52 #ifdef CONFIG_X86_64
53 # include <asm/proto.h>
54 # include <asm/numa_64.h>
55 #endif /* X86 */
56
57 #define BAD_MADT_ENTRY(entry, end) ( \
58 (!entry) || (unsigned long)entry + sizeof(*entry) > end || \
59 ((struct acpi_subtable_header *)entry)->length < sizeof(*entry))
60
61 #define PREFIX "ACPI: "
62
63 int acpi_noirq; /* skip ACPI IRQ initialization */
64 int acpi_pci_disabled; /* skip ACPI PCI scan and IRQ initialization */
65 EXPORT_SYMBOL(acpi_pci_disabled);
66
67 int acpi_lapic;
68 int acpi_ioapic;
69 int acpi_strict;
70
71 u8 acpi_sci_flags __initdata;
72 int acpi_sci_override_gsi __initdata;
73 int acpi_skip_timer_override __initdata;
74 int acpi_use_timer_override __initdata;
75 int acpi_fix_pin2_polarity __initdata;
76
77 #ifdef CONFIG_X86_LOCAL_APIC
78 static u64 acpi_lapic_addr __initdata = APIC_DEFAULT_PHYS_BASE;
79 #endif
80
81 #ifndef __HAVE_ARCH_CMPXCHG
82 #warning ACPI uses CMPXCHG, i486 and later hardware
83 #endif
84
85 /* --------------------------------------------------------------------------
86 Boot-time Configuration
87 -------------------------------------------------------------------------- */
88
89 /*
90 * The default interrupt routing model is PIC (8259). This gets
91 * overridden if IOAPICs are enumerated (below).
92 */
93 enum acpi_irq_model_id acpi_irq_model = ACPI_IRQ_MODEL_PIC;
94
95
96 /*
97 * ISA irqs by default are the first 16 gsis but can be
98 * any gsi as specified by an interrupt source override.
99 */
100 static u32 isa_irq_to_gsi[NR_IRQS_LEGACY] __read_mostly = {
101 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15
102 };
103
104 static unsigned int gsi_to_irq(unsigned int gsi)
105 {
106 unsigned int irq = gsi + NR_IRQS_LEGACY;
107 unsigned int i;
108
109 for (i = 0; i < NR_IRQS_LEGACY; i++) {
110 if (isa_irq_to_gsi[i] == gsi) {
111 return i;
112 }
113 }
114
115 /* Provide an identity mapping of gsi == irq
116 * except on truly weird platforms that have
117 * non isa irqs in the first 16 gsis.
118 */
119 if (gsi >= NR_IRQS_LEGACY)
120 irq = gsi;
121 else
122 irq = gsi_top + gsi;
123
124 return irq;
125 }
126
127 static u32 irq_to_gsi(int irq)
128 {
129 unsigned int gsi;
130
131 if (irq < NR_IRQS_LEGACY)
132 gsi = isa_irq_to_gsi[irq];
133 else if (irq < gsi_top)
134 gsi = irq;
135 else if (irq < (gsi_top + NR_IRQS_LEGACY))
136 gsi = irq - gsi_top;
137 else
138 gsi = 0xffffffff;
139
140 return gsi;
141 }
142
143 /*
144 * Temporarily use the virtual area starting from FIX_IO_APIC_BASE_END,
145 * to map the target physical address. The problem is that set_fixmap()
146 * provides a single page, and it is possible that the page is not
147 * sufficient.
148 * By using this area, we can map up to MAX_IO_APICS pages temporarily,
149 * i.e. until the next __va_range() call.
150 *
151 * Important Safety Note: The fixed I/O APIC page numbers are *subtracted*
152 * from the fixed base. That's why we start at FIX_IO_APIC_BASE_END and
153 * count idx down while incrementing the phys address.
154 */
155 char *__init __acpi_map_table(unsigned long phys, unsigned long size)
156 {
157
158 if (!phys || !size)
159 return NULL;
160
161 return early_ioremap(phys, size);
162 }
163 void __init __acpi_unmap_table(char *map, unsigned long size)
164 {
165 if (!map || !size)
166 return;
167
168 early_iounmap(map, size);
169 }
170
171 #ifdef CONFIG_X86_LOCAL_APIC
172 static int __init acpi_parse_madt(struct acpi_table_header *table)
173 {
174 struct acpi_table_madt *madt = NULL;
175
176 if (!cpu_has_apic)
177 return -EINVAL;
178
179 madt = (struct acpi_table_madt *)table;
180 if (!madt) {
181 printk(KERN_WARNING PREFIX "Unable to map MADT\n");
182 return -ENODEV;
183 }
184
185 if (madt->address) {
186 acpi_lapic_addr = (u64) madt->address;
187
188 printk(KERN_DEBUG PREFIX "Local APIC address 0x%08x\n",
189 madt->address);
190 }
191
192 default_acpi_madt_oem_check(madt->header.oem_id,
193 madt->header.oem_table_id);
194
195 return 0;
196 }
197
198 static void __cpuinit acpi_register_lapic(int id, u8 enabled)
199 {
200 unsigned int ver = 0;
201
202 if (id >= (MAX_LOCAL_APIC-1)) {
203 printk(KERN_INFO PREFIX "skipped apicid that is too big\n");
204 return;
205 }
206
207 if (!enabled) {
208 ++disabled_cpus;
209 return;
210 }
211
212 if (boot_cpu_physical_apicid != -1U)
213 ver = apic_version[boot_cpu_physical_apicid];
214
215 generic_processor_info(id, ver);
216 }
217
218 static int __init
219 acpi_parse_x2apic(struct acpi_subtable_header *header, const unsigned long end)
220 {
221 struct acpi_madt_local_x2apic *processor = NULL;
222 int apic_id;
223 u8 enabled;
224
225 processor = (struct acpi_madt_local_x2apic *)header;
226
227 if (BAD_MADT_ENTRY(processor, end))
228 return -EINVAL;
229
230 acpi_table_print_madt_entry(header);
231
232 apic_id = processor->local_apic_id;
233 enabled = processor->lapic_flags & ACPI_MADT_ENABLED;
234 #ifdef CONFIG_X86_X2APIC
235 /*
236 * We need to register disabled CPU as well to permit
237 * counting disabled CPUs. This allows us to size
238 * cpus_possible_map more accurately, to permit
239 * to not preallocating memory for all NR_CPUS
240 * when we use CPU hotplug.
241 */
242 if (!apic->apic_id_valid(apic_id) && enabled)
243 printk(KERN_WARNING PREFIX "x2apic entry ignored\n");
244 else
245 acpi_register_lapic(apic_id, enabled);
246 #else
247 printk(KERN_WARNING PREFIX "x2apic entry ignored\n");
248 #endif
249
250 return 0;
251 }
252
253 static int __init
254 acpi_parse_lapic(struct acpi_subtable_header * header, const unsigned long end)
255 {
256 struct acpi_madt_local_apic *processor = NULL;
257
258 processor = (struct acpi_madt_local_apic *)header;
259
260 if (BAD_MADT_ENTRY(processor, end))
261 return -EINVAL;
262
263 acpi_table_print_madt_entry(header);
264
265 /*
266 * We need to register disabled CPU as well to permit
267 * counting disabled CPUs. This allows us to size
268 * cpus_possible_map more accurately, to permit
269 * to not preallocating memory for all NR_CPUS
270 * when we use CPU hotplug.
271 */
272 acpi_register_lapic(processor->id, /* APIC ID */
273 processor->lapic_flags & ACPI_MADT_ENABLED);
274
275 return 0;
276 }
277
278 static int __init
279 acpi_parse_sapic(struct acpi_subtable_header *header, const unsigned long end)
280 {
281 struct acpi_madt_local_sapic *processor = NULL;
282
283 processor = (struct acpi_madt_local_sapic *)header;
284
285 if (BAD_MADT_ENTRY(processor, end))
286 return -EINVAL;
287
288 acpi_table_print_madt_entry(header);
289
290 acpi_register_lapic((processor->id << 8) | processor->eid,/* APIC ID */
291 processor->lapic_flags & ACPI_MADT_ENABLED);
292
293 return 0;
294 }
295
296 static int __init
297 acpi_parse_lapic_addr_ovr(struct acpi_subtable_header * header,
298 const unsigned long end)
299 {
300 struct acpi_madt_local_apic_override *lapic_addr_ovr = NULL;
301
302 lapic_addr_ovr = (struct acpi_madt_local_apic_override *)header;
303
304 if (BAD_MADT_ENTRY(lapic_addr_ovr, end))
305 return -EINVAL;
306
307 acpi_lapic_addr = lapic_addr_ovr->address;
308
309 return 0;
310 }
311
312 static int __init
313 acpi_parse_x2apic_nmi(struct acpi_subtable_header *header,
314 const unsigned long end)
315 {
316 struct acpi_madt_local_x2apic_nmi *x2apic_nmi = NULL;
317
318 x2apic_nmi = (struct acpi_madt_local_x2apic_nmi *)header;
319
320 if (BAD_MADT_ENTRY(x2apic_nmi, end))
321 return -EINVAL;
322
323 acpi_table_print_madt_entry(header);
324
325 if (x2apic_nmi->lint != 1)
326 printk(KERN_WARNING PREFIX "NMI not connected to LINT 1!\n");
327
328 return 0;
329 }
330
331 static int __init
332 acpi_parse_lapic_nmi(struct acpi_subtable_header * header, const unsigned long end)
333 {
334 struct acpi_madt_local_apic_nmi *lapic_nmi = NULL;
335
336 lapic_nmi = (struct acpi_madt_local_apic_nmi *)header;
337
338 if (BAD_MADT_ENTRY(lapic_nmi, end))
339 return -EINVAL;
340
341 acpi_table_print_madt_entry(header);
342
343 if (lapic_nmi->lint != 1)
344 printk(KERN_WARNING PREFIX "NMI not connected to LINT 1!\n");
345
346 return 0;
347 }
348
349 #endif /*CONFIG_X86_LOCAL_APIC */
350
351 #ifdef CONFIG_X86_IO_APIC
352
353 static int __init
354 acpi_parse_ioapic(struct acpi_subtable_header * header, const unsigned long end)
355 {
356 struct acpi_madt_io_apic *ioapic = NULL;
357
358 ioapic = (struct acpi_madt_io_apic *)header;
359
360 if (BAD_MADT_ENTRY(ioapic, end))
361 return -EINVAL;
362
363 acpi_table_print_madt_entry(header);
364
365 mp_register_ioapic(ioapic->id,
366 ioapic->address, ioapic->global_irq_base);
367
368 return 0;
369 }
370
371 /*
372 * Parse Interrupt Source Override for the ACPI SCI
373 */
374 static void __init acpi_sci_ioapic_setup(u8 bus_irq, u16 polarity, u16 trigger, u32 gsi)
375 {
376 if (trigger == 0) /* compatible SCI trigger is level */
377 trigger = 3;
378
379 if (polarity == 0) /* compatible SCI polarity is low */
380 polarity = 3;
381
382 /* Command-line over-ride via acpi_sci= */
383 if (acpi_sci_flags & ACPI_MADT_TRIGGER_MASK)
384 trigger = (acpi_sci_flags & ACPI_MADT_TRIGGER_MASK) >> 2;
385
386 if (acpi_sci_flags & ACPI_MADT_POLARITY_MASK)
387 polarity = acpi_sci_flags & ACPI_MADT_POLARITY_MASK;
388
389 /*
390 * mp_config_acpi_legacy_irqs() already setup IRQs < 16
391 * If GSI is < 16, this will update its flags,
392 * else it will create a new mp_irqs[] entry.
393 */
394 mp_override_legacy_irq(bus_irq, polarity, trigger, gsi);
395
396 /*
397 * stash over-ride to indicate we've been here
398 * and for later update of acpi_gbl_FADT
399 */
400 acpi_sci_override_gsi = gsi;
401 return;
402 }
403
404 static int __init
405 acpi_parse_int_src_ovr(struct acpi_subtable_header * header,
406 const unsigned long end)
407 {
408 struct acpi_madt_interrupt_override *intsrc = NULL;
409
410 intsrc = (struct acpi_madt_interrupt_override *)header;
411
412 if (BAD_MADT_ENTRY(intsrc, end))
413 return -EINVAL;
414
415 acpi_table_print_madt_entry(header);
416
417 if (intsrc->source_irq == acpi_gbl_FADT.sci_interrupt) {
418 acpi_sci_ioapic_setup(intsrc->source_irq,
419 intsrc->inti_flags & ACPI_MADT_POLARITY_MASK,
420 (intsrc->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2,
421 intsrc->global_irq);
422 return 0;
423 }
424
425 if (intsrc->source_irq == 0) {
426 if (acpi_skip_timer_override) {
427 printk(PREFIX "BIOS IRQ0 override ignored.\n");
428 return 0;
429 }
430
431 if ((intsrc->global_irq == 2) && acpi_fix_pin2_polarity
432 && (intsrc->inti_flags & ACPI_MADT_POLARITY_MASK)) {
433 intsrc->inti_flags &= ~ACPI_MADT_POLARITY_MASK;
434 printk(PREFIX "BIOS IRQ0 pin2 override: forcing polarity to high active.\n");
435 }
436 }
437
438 mp_override_legacy_irq(intsrc->source_irq,
439 intsrc->inti_flags & ACPI_MADT_POLARITY_MASK,
440 (intsrc->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2,
441 intsrc->global_irq);
442
443 return 0;
444 }
445
446 static int __init
447 acpi_parse_nmi_src(struct acpi_subtable_header * header, const unsigned long end)
448 {
449 struct acpi_madt_nmi_source *nmi_src = NULL;
450
451 nmi_src = (struct acpi_madt_nmi_source *)header;
452
453 if (BAD_MADT_ENTRY(nmi_src, end))
454 return -EINVAL;
455
456 acpi_table_print_madt_entry(header);
457
458 /* TBD: Support nimsrc entries? */
459
460 return 0;
461 }
462
463 #endif /* CONFIG_X86_IO_APIC */
464
465 /*
466 * acpi_pic_sci_set_trigger()
467 *
468 * use ELCR to set PIC-mode trigger type for SCI
469 *
470 * If a PIC-mode SCI is not recognized or gives spurious IRQ7's
471 * it may require Edge Trigger -- use "acpi_sci=edge"
472 *
473 * Port 0x4d0-4d1 are ECLR1 and ECLR2, the Edge/Level Control Registers
474 * for the 8259 PIC. bit[n] = 1 means irq[n] is Level, otherwise Edge.
475 * ECLR1 is IRQs 0-7 (IRQ 0, 1, 2 must be 0)
476 * ECLR2 is IRQs 8-15 (IRQ 8, 13 must be 0)
477 */
478
479 void __init acpi_pic_sci_set_trigger(unsigned int irq, u16 trigger)
480 {
481 unsigned int mask = 1 << irq;
482 unsigned int old, new;
483
484 /* Real old ELCR mask */
485 old = inb(0x4d0) | (inb(0x4d1) << 8);
486
487 /*
488 * If we use ACPI to set PCI IRQs, then we should clear ELCR
489 * since we will set it correctly as we enable the PCI irq
490 * routing.
491 */
492 new = acpi_noirq ? old : 0;
493
494 /*
495 * Update SCI information in the ELCR, it isn't in the PCI
496 * routing tables..
497 */
498 switch (trigger) {
499 case 1: /* Edge - clear */
500 new &= ~mask;
501 break;
502 case 3: /* Level - set */
503 new |= mask;
504 break;
505 }
506
507 if (old == new)
508 return;
509
510 printk(PREFIX "setting ELCR to %04x (from %04x)\n", new, old);
511 outb(new, 0x4d0);
512 outb(new >> 8, 0x4d1);
513 }
514
515 int acpi_gsi_to_irq(u32 gsi, unsigned int *irq)
516 {
517 *irq = gsi_to_irq(gsi);
518
519 #ifdef CONFIG_X86_IO_APIC
520 if (acpi_irq_model == ACPI_IRQ_MODEL_IOAPIC)
521 setup_IO_APIC_irq_extra(gsi);
522 #endif
523
524 return 0;
525 }
526 EXPORT_SYMBOL_GPL(acpi_gsi_to_irq);
527
528 int acpi_isa_irq_to_gsi(unsigned isa_irq, u32 *gsi)
529 {
530 if (isa_irq >= 16)
531 return -1;
532 *gsi = irq_to_gsi(isa_irq);
533 return 0;
534 }
535
536 static int acpi_register_gsi_pic(struct device *dev, u32 gsi,
537 int trigger, int polarity)
538 {
539 #ifdef CONFIG_PCI
540 /*
541 * Make sure all (legacy) PCI IRQs are set as level-triggered.
542 */
543 if (trigger == ACPI_LEVEL_SENSITIVE)
544 eisa_set_level_irq(gsi);
545 #endif
546
547 return gsi;
548 }
549
550 static int acpi_register_gsi_ioapic(struct device *dev, u32 gsi,
551 int trigger, int polarity)
552 {
553 #ifdef CONFIG_X86_IO_APIC
554 gsi = mp_register_gsi(dev, gsi, trigger, polarity);
555 #endif
556
557 return gsi;
558 }
559
560 int (*__acpi_register_gsi)(struct device *dev, u32 gsi,
561 int trigger, int polarity) = acpi_register_gsi_pic;
562
563 /*
564 * success: return IRQ number (>=0)
565 * failure: return < 0
566 */
567 int acpi_register_gsi(struct device *dev, u32 gsi, int trigger, int polarity)
568 {
569 unsigned int irq;
570 unsigned int plat_gsi = gsi;
571
572 plat_gsi = (*__acpi_register_gsi)(dev, gsi, trigger, polarity);
573 irq = gsi_to_irq(plat_gsi);
574
575 return irq;
576 }
577 EXPORT_SYMBOL_GPL(acpi_register_gsi);
578
579 void acpi_unregister_gsi(u32 gsi)
580 {
581 }
582 EXPORT_SYMBOL_GPL(acpi_unregister_gsi);
583
584 void __init acpi_set_irq_model_pic(void)
585 {
586 acpi_irq_model = ACPI_IRQ_MODEL_PIC;
587 __acpi_register_gsi = acpi_register_gsi_pic;
588 acpi_ioapic = 0;
589 }
590
591 void __init acpi_set_irq_model_ioapic(void)
592 {
593 acpi_irq_model = ACPI_IRQ_MODEL_IOAPIC;
594 __acpi_register_gsi = acpi_register_gsi_ioapic;
595 acpi_ioapic = 1;
596 }
597
598 /*
599 * ACPI based hotplug support for CPU
600 */
601 #ifdef CONFIG_ACPI_HOTPLUG_CPU
602 #include <acpi/processor.h>
603
604 static void __cpuinit acpi_map_cpu2node(acpi_handle handle, int cpu, int physid)
605 {
606 #ifdef CONFIG_ACPI_NUMA
607 int nid;
608
609 nid = acpi_get_node(handle);
610 if (nid == -1 || !node_online(nid))
611 return;
612 set_apicid_to_node(physid, nid);
613 numa_set_node(cpu, nid);
614 #endif
615 }
616
617 static int __cpuinit _acpi_map_lsapic(acpi_handle handle, int *pcpu)
618 {
619 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
620 union acpi_object *obj;
621 struct acpi_madt_local_apic *lapic;
622 cpumask_var_t tmp_map, new_map;
623 u8 physid;
624 int cpu;
625 int retval = -ENOMEM;
626
627 if (ACPI_FAILURE(acpi_evaluate_object(handle, "_MAT", NULL, &buffer)))
628 return -EINVAL;
629
630 if (!buffer.length || !buffer.pointer)
631 return -EINVAL;
632
633 obj = buffer.pointer;
634 if (obj->type != ACPI_TYPE_BUFFER ||
635 obj->buffer.length < sizeof(*lapic)) {
636 kfree(buffer.pointer);
637 return -EINVAL;
638 }
639
640 lapic = (struct acpi_madt_local_apic *)obj->buffer.pointer;
641
642 if (lapic->header.type != ACPI_MADT_TYPE_LOCAL_APIC ||
643 !(lapic->lapic_flags & ACPI_MADT_ENABLED)) {
644 kfree(buffer.pointer);
645 return -EINVAL;
646 }
647
648 physid = lapic->id;
649
650 kfree(buffer.pointer);
651 buffer.length = ACPI_ALLOCATE_BUFFER;
652 buffer.pointer = NULL;
653 lapic = NULL;
654
655 if (!alloc_cpumask_var(&tmp_map, GFP_KERNEL))
656 goto out;
657
658 if (!alloc_cpumask_var(&new_map, GFP_KERNEL))
659 goto free_tmp_map;
660
661 cpumask_copy(tmp_map, cpu_present_mask);
662 acpi_register_lapic(physid, ACPI_MADT_ENABLED);
663
664 /*
665 * If acpi_register_lapic successfully generates a new logical cpu
666 * number, then the following will get us exactly what was mapped
667 */
668 cpumask_andnot(new_map, cpu_present_mask, tmp_map);
669 if (cpumask_empty(new_map)) {
670 printk ("Unable to map lapic to logical cpu number\n");
671 retval = -EINVAL;
672 goto free_new_map;
673 }
674
675 acpi_processor_set_pdc(handle);
676
677 cpu = cpumask_first(new_map);
678 acpi_map_cpu2node(handle, cpu, physid);
679
680 *pcpu = cpu;
681 retval = 0;
682
683 free_new_map:
684 free_cpumask_var(new_map);
685 free_tmp_map:
686 free_cpumask_var(tmp_map);
687 out:
688 return retval;
689 }
690
691 /* wrapper to silence section mismatch warning */
692 int __ref acpi_map_lsapic(acpi_handle handle, int *pcpu)
693 {
694 return _acpi_map_lsapic(handle, pcpu);
695 }
696 EXPORT_SYMBOL(acpi_map_lsapic);
697
698 int acpi_unmap_lsapic(int cpu)
699 {
700 per_cpu(x86_cpu_to_apicid, cpu) = -1;
701 set_cpu_present(cpu, false);
702 num_processors--;
703
704 return (0);
705 }
706
707 EXPORT_SYMBOL(acpi_unmap_lsapic);
708 #endif /* CONFIG_ACPI_HOTPLUG_CPU */
709
710 int acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base)
711 {
712 /* TBD */
713 return -EINVAL;
714 }
715
716 EXPORT_SYMBOL(acpi_register_ioapic);
717
718 int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base)
719 {
720 /* TBD */
721 return -EINVAL;
722 }
723
724 EXPORT_SYMBOL(acpi_unregister_ioapic);
725
726 static int __init acpi_parse_sbf(struct acpi_table_header *table)
727 {
728 struct acpi_table_boot *sb;
729
730 sb = (struct acpi_table_boot *)table;
731 if (!sb) {
732 printk(KERN_WARNING PREFIX "Unable to map SBF\n");
733 return -ENODEV;
734 }
735
736 sbf_port = sb->cmos_index; /* Save CMOS port */
737
738 return 0;
739 }
740
741 #ifdef CONFIG_HPET_TIMER
742 #include <asm/hpet.h>
743
744 static struct __initdata resource *hpet_res;
745
746 static int __init acpi_parse_hpet(struct acpi_table_header *table)
747 {
748 struct acpi_table_hpet *hpet_tbl;
749
750 hpet_tbl = (struct acpi_table_hpet *)table;
751 if (!hpet_tbl) {
752 printk(KERN_WARNING PREFIX "Unable to map HPET\n");
753 return -ENODEV;
754 }
755
756 if (hpet_tbl->address.space_id != ACPI_SPACE_MEM) {
757 printk(KERN_WARNING PREFIX "HPET timers must be located in "
758 "memory.\n");
759 return -1;
760 }
761
762 hpet_address = hpet_tbl->address.address;
763 hpet_blockid = hpet_tbl->sequence;
764
765 /*
766 * Some broken BIOSes advertise HPET at 0x0. We really do not
767 * want to allocate a resource there.
768 */
769 if (!hpet_address) {
770 printk(KERN_WARNING PREFIX
771 "HPET id: %#x base: %#lx is invalid\n",
772 hpet_tbl->id, hpet_address);
773 return 0;
774 }
775 #ifdef CONFIG_X86_64
776 /*
777 * Some even more broken BIOSes advertise HPET at
778 * 0xfed0000000000000 instead of 0xfed00000. Fix it up and add
779 * some noise:
780 */
781 if (hpet_address == 0xfed0000000000000UL) {
782 if (!hpet_force_user) {
783 printk(KERN_WARNING PREFIX "HPET id: %#x "
784 "base: 0xfed0000000000000 is bogus\n "
785 "try hpet=force on the kernel command line to "
786 "fix it up to 0xfed00000.\n", hpet_tbl->id);
787 hpet_address = 0;
788 return 0;
789 }
790 printk(KERN_WARNING PREFIX
791 "HPET id: %#x base: 0xfed0000000000000 fixed up "
792 "to 0xfed00000.\n", hpet_tbl->id);
793 hpet_address >>= 32;
794 }
795 #endif
796 printk(KERN_INFO PREFIX "HPET id: %#x base: %#lx\n",
797 hpet_tbl->id, hpet_address);
798
799 /*
800 * Allocate and initialize the HPET firmware resource for adding into
801 * the resource tree during the lateinit timeframe.
802 */
803 #define HPET_RESOURCE_NAME_SIZE 9
804 hpet_res = alloc_bootmem(sizeof(*hpet_res) + HPET_RESOURCE_NAME_SIZE);
805
806 hpet_res->name = (void *)&hpet_res[1];
807 hpet_res->flags = IORESOURCE_MEM;
808 snprintf((char *)hpet_res->name, HPET_RESOURCE_NAME_SIZE, "HPET %u",
809 hpet_tbl->sequence);
810
811 hpet_res->start = hpet_address;
812 hpet_res->end = hpet_address + (1 * 1024) - 1;
813
814 return 0;
815 }
816
817 /*
818 * hpet_insert_resource inserts the HPET resources used into the resource
819 * tree.
820 */
821 static __init int hpet_insert_resource(void)
822 {
823 if (!hpet_res)
824 return 1;
825
826 return insert_resource(&iomem_resource, hpet_res);
827 }
828
829 late_initcall(hpet_insert_resource);
830
831 #else
832 #define acpi_parse_hpet NULL
833 #endif
834
835 static int __init acpi_parse_fadt(struct acpi_table_header *table)
836 {
837
838 #ifdef CONFIG_X86_PM_TIMER
839 /* detect the location of the ACPI PM Timer */
840 if (acpi_gbl_FADT.header.revision >= FADT2_REVISION_ID) {
841 /* FADT rev. 2 */
842 if (acpi_gbl_FADT.xpm_timer_block.space_id !=
843 ACPI_ADR_SPACE_SYSTEM_IO)
844 return 0;
845
846 pmtmr_ioport = acpi_gbl_FADT.xpm_timer_block.address;
847 /*
848 * "X" fields are optional extensions to the original V1.0
849 * fields, so we must selectively expand V1.0 fields if the
850 * corresponding X field is zero.
851 */
852 if (!pmtmr_ioport)
853 pmtmr_ioport = acpi_gbl_FADT.pm_timer_block;
854 } else {
855 /* FADT rev. 1 */
856 pmtmr_ioport = acpi_gbl_FADT.pm_timer_block;
857 }
858 if (pmtmr_ioport)
859 printk(KERN_INFO PREFIX "PM-Timer IO Port: %#x\n",
860 pmtmr_ioport);
861 #endif
862 return 0;
863 }
864
865 #ifdef CONFIG_X86_LOCAL_APIC
866 /*
867 * Parse LAPIC entries in MADT
868 * returns 0 on success, < 0 on error
869 */
870
871 static int __init early_acpi_parse_madt_lapic_addr_ovr(void)
872 {
873 int count;
874
875 if (!cpu_has_apic)
876 return -ENODEV;
877
878 /*
879 * Note that the LAPIC address is obtained from the MADT (32-bit value)
880 * and (optionally) overriden by a LAPIC_ADDR_OVR entry (64-bit value).
881 */
882
883 count =
884 acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE,
885 acpi_parse_lapic_addr_ovr, 0);
886 if (count < 0) {
887 printk(KERN_ERR PREFIX
888 "Error parsing LAPIC address override entry\n");
889 return count;
890 }
891
892 register_lapic_address(acpi_lapic_addr);
893
894 return count;
895 }
896
897 static int __init acpi_parse_madt_lapic_entries(void)
898 {
899 int count;
900 int x2count = 0;
901
902 if (!cpu_has_apic)
903 return -ENODEV;
904
905 /*
906 * Note that the LAPIC address is obtained from the MADT (32-bit value)
907 * and (optionally) overriden by a LAPIC_ADDR_OVR entry (64-bit value).
908 */
909
910 count =
911 acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE,
912 acpi_parse_lapic_addr_ovr, 0);
913 if (count < 0) {
914 printk(KERN_ERR PREFIX
915 "Error parsing LAPIC address override entry\n");
916 return count;
917 }
918
919 register_lapic_address(acpi_lapic_addr);
920
921 count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_SAPIC,
922 acpi_parse_sapic, MAX_LOCAL_APIC);
923
924 if (!count) {
925 x2count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_X2APIC,
926 acpi_parse_x2apic, MAX_LOCAL_APIC);
927 count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC,
928 acpi_parse_lapic, MAX_LOCAL_APIC);
929 }
930 if (!count && !x2count) {
931 printk(KERN_ERR PREFIX "No LAPIC entries present\n");
932 /* TBD: Cleanup to allow fallback to MPS */
933 return -ENODEV;
934 } else if (count < 0 || x2count < 0) {
935 printk(KERN_ERR PREFIX "Error parsing LAPIC entry\n");
936 /* TBD: Cleanup to allow fallback to MPS */
937 return count;
938 }
939
940 x2count =
941 acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_X2APIC_NMI,
942 acpi_parse_x2apic_nmi, 0);
943 count =
944 acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_NMI, acpi_parse_lapic_nmi, 0);
945 if (count < 0 || x2count < 0) {
946 printk(KERN_ERR PREFIX "Error parsing LAPIC NMI entry\n");
947 /* TBD: Cleanup to allow fallback to MPS */
948 return count;
949 }
950 return 0;
951 }
952 #endif /* CONFIG_X86_LOCAL_APIC */
953
954 #ifdef CONFIG_X86_IO_APIC
955 #define MP_ISA_BUS 0
956
957 #ifdef CONFIG_X86_ES7000
958 extern int es7000_plat;
959 #endif
960
961 void __init mp_override_legacy_irq(u8 bus_irq, u8 polarity, u8 trigger, u32 gsi)
962 {
963 int ioapic;
964 int pin;
965 struct mpc_intsrc mp_irq;
966
967 /*
968 * Convert 'gsi' to 'ioapic.pin'.
969 */
970 ioapic = mp_find_ioapic(gsi);
971 if (ioapic < 0)
972 return;
973 pin = mp_find_ioapic_pin(ioapic, gsi);
974
975 /*
976 * TBD: This check is for faulty timer entries, where the override
977 * erroneously sets the trigger to level, resulting in a HUGE
978 * increase of timer interrupts!
979 */
980 if ((bus_irq == 0) && (trigger == 3))
981 trigger = 1;
982
983 mp_irq.type = MP_INTSRC;
984 mp_irq.irqtype = mp_INT;
985 mp_irq.irqflag = (trigger << 2) | polarity;
986 mp_irq.srcbus = MP_ISA_BUS;
987 mp_irq.srcbusirq = bus_irq; /* IRQ */
988 mp_irq.dstapic = mpc_ioapic_id(ioapic); /* APIC ID */
989 mp_irq.dstirq = pin; /* INTIN# */
990
991 mp_save_irq(&mp_irq);
992
993 isa_irq_to_gsi[bus_irq] = gsi;
994 }
995
996 void __init mp_config_acpi_legacy_irqs(void)
997 {
998 int i;
999 struct mpc_intsrc mp_irq;
1000
1001 #ifdef CONFIG_EISA
1002 /*
1003 * Fabricate the legacy ISA bus (bus #31).
1004 */
1005 mp_bus_id_to_type[MP_ISA_BUS] = MP_BUS_ISA;
1006 #endif
1007 set_bit(MP_ISA_BUS, mp_bus_not_pci);
1008 pr_debug("Bus #%d is ISA\n", MP_ISA_BUS);
1009
1010 #ifdef CONFIG_X86_ES7000
1011 /*
1012 * Older generations of ES7000 have no legacy identity mappings
1013 */
1014 if (es7000_plat == 1)
1015 return;
1016 #endif
1017
1018 /*
1019 * Use the default configuration for the IRQs 0-15. Unless
1020 * overridden by (MADT) interrupt source override entries.
1021 */
1022 for (i = 0; i < 16; i++) {
1023 int ioapic, pin;
1024 unsigned int dstapic;
1025 int idx;
1026 u32 gsi;
1027
1028 /* Locate the gsi that irq i maps to. */
1029 if (acpi_isa_irq_to_gsi(i, &gsi))
1030 continue;
1031
1032 /*
1033 * Locate the IOAPIC that manages the ISA IRQ.
1034 */
1035 ioapic = mp_find_ioapic(gsi);
1036 if (ioapic < 0)
1037 continue;
1038 pin = mp_find_ioapic_pin(ioapic, gsi);
1039 dstapic = mpc_ioapic_id(ioapic);
1040
1041 for (idx = 0; idx < mp_irq_entries; idx++) {
1042 struct mpc_intsrc *irq = mp_irqs + idx;
1043
1044 /* Do we already have a mapping for this ISA IRQ? */
1045 if (irq->srcbus == MP_ISA_BUS && irq->srcbusirq == i)
1046 break;
1047
1048 /* Do we already have a mapping for this IOAPIC pin */
1049 if (irq->dstapic == dstapic && irq->dstirq == pin)
1050 break;
1051 }
1052
1053 if (idx != mp_irq_entries) {
1054 printk(KERN_DEBUG "ACPI: IRQ%d used by override.\n", i);
1055 continue; /* IRQ already used */
1056 }
1057
1058 mp_irq.type = MP_INTSRC;
1059 mp_irq.irqflag = 0; /* Conforming */
1060 mp_irq.srcbus = MP_ISA_BUS;
1061 mp_irq.dstapic = dstapic;
1062 mp_irq.irqtype = mp_INT;
1063 mp_irq.srcbusirq = i; /* Identity mapped */
1064 mp_irq.dstirq = pin;
1065
1066 mp_save_irq(&mp_irq);
1067 }
1068 }
1069
1070 static int mp_config_acpi_gsi(struct device *dev, u32 gsi, int trigger,
1071 int polarity)
1072 {
1073 #ifdef CONFIG_X86_MPPARSE
1074 struct mpc_intsrc mp_irq;
1075 struct pci_dev *pdev;
1076 unsigned char number;
1077 unsigned int devfn;
1078 int ioapic;
1079 u8 pin;
1080
1081 if (!acpi_ioapic)
1082 return 0;
1083 if (!dev)
1084 return 0;
1085 if (dev->bus != &pci_bus_type)
1086 return 0;
1087
1088 pdev = to_pci_dev(dev);
1089 number = pdev->bus->number;
1090 devfn = pdev->devfn;
1091 pin = pdev->pin;
1092 /* print the entry should happen on mptable identically */
1093 mp_irq.type = MP_INTSRC;
1094 mp_irq.irqtype = mp_INT;
1095 mp_irq.irqflag = (trigger == ACPI_EDGE_SENSITIVE ? 4 : 0x0c) |
1096 (polarity == ACPI_ACTIVE_HIGH ? 1 : 3);
1097 mp_irq.srcbus = number;
1098 mp_irq.srcbusirq = (((devfn >> 3) & 0x1f) << 2) | ((pin - 1) & 3);
1099 ioapic = mp_find_ioapic(gsi);
1100 mp_irq.dstapic = mpc_ioapic_id(ioapic);
1101 mp_irq.dstirq = mp_find_ioapic_pin(ioapic, gsi);
1102
1103 mp_save_irq(&mp_irq);
1104 #endif
1105 return 0;
1106 }
1107
1108 int mp_register_gsi(struct device *dev, u32 gsi, int trigger, int polarity)
1109 {
1110 int ioapic;
1111 int ioapic_pin;
1112 struct io_apic_irq_attr irq_attr;
1113
1114 if (acpi_irq_model != ACPI_IRQ_MODEL_IOAPIC)
1115 return gsi;
1116
1117 /* Don't set up the ACPI SCI because it's already set up */
1118 if (acpi_gbl_FADT.sci_interrupt == gsi)
1119 return gsi;
1120
1121 ioapic = mp_find_ioapic(gsi);
1122 if (ioapic < 0) {
1123 printk(KERN_WARNING "No IOAPIC for GSI %u\n", gsi);
1124 return gsi;
1125 }
1126
1127 ioapic_pin = mp_find_ioapic_pin(ioapic, gsi);
1128
1129 if (ioapic_pin > MP_MAX_IOAPIC_PIN) {
1130 printk(KERN_ERR "Invalid reference to IOAPIC pin "
1131 "%d-%d\n", mpc_ioapic_id(ioapic),
1132 ioapic_pin);
1133 return gsi;
1134 }
1135
1136 if (enable_update_mptable)
1137 mp_config_acpi_gsi(dev, gsi, trigger, polarity);
1138
1139 set_io_apic_irq_attr(&irq_attr, ioapic, ioapic_pin,
1140 trigger == ACPI_EDGE_SENSITIVE ? 0 : 1,
1141 polarity == ACPI_ACTIVE_HIGH ? 0 : 1);
1142 io_apic_set_pci_routing(dev, gsi_to_irq(gsi), &irq_attr);
1143
1144 return gsi;
1145 }
1146
1147 /*
1148 * Parse IOAPIC related entries in MADT
1149 * returns 0 on success, < 0 on error
1150 */
1151 static int __init acpi_parse_madt_ioapic_entries(void)
1152 {
1153 int count;
1154
1155 /*
1156 * ACPI interpreter is required to complete interrupt setup,
1157 * so if it is off, don't enumerate the io-apics with ACPI.
1158 * If MPS is present, it will handle them,
1159 * otherwise the system will stay in PIC mode
1160 */
1161 if (acpi_disabled || acpi_noirq)
1162 return -ENODEV;
1163
1164 if (!cpu_has_apic)
1165 return -ENODEV;
1166
1167 /*
1168 * if "noapic" boot option, don't look for IO-APICs
1169 */
1170 if (skip_ioapic_setup) {
1171 printk(KERN_INFO PREFIX "Skipping IOAPIC probe "
1172 "due to 'noapic' option.\n");
1173 return -ENODEV;
1174 }
1175
1176 count =
1177 acpi_table_parse_madt(ACPI_MADT_TYPE_IO_APIC, acpi_parse_ioapic,
1178 MAX_IO_APICS);
1179 if (!count) {
1180 printk(KERN_ERR PREFIX "No IOAPIC entries present\n");
1181 return -ENODEV;
1182 } else if (count < 0) {
1183 printk(KERN_ERR PREFIX "Error parsing IOAPIC entry\n");
1184 return count;
1185 }
1186
1187 count =
1188 acpi_table_parse_madt(ACPI_MADT_TYPE_INTERRUPT_OVERRIDE, acpi_parse_int_src_ovr,
1189 nr_irqs);
1190 if (count < 0) {
1191 printk(KERN_ERR PREFIX
1192 "Error parsing interrupt source overrides entry\n");
1193 /* TBD: Cleanup to allow fallback to MPS */
1194 return count;
1195 }
1196
1197 /*
1198 * If BIOS did not supply an INT_SRC_OVR for the SCI
1199 * pretend we got one so we can set the SCI flags.
1200 */
1201 if (!acpi_sci_override_gsi)
1202 acpi_sci_ioapic_setup(acpi_gbl_FADT.sci_interrupt, 0, 0,
1203 acpi_gbl_FADT.sci_interrupt);
1204
1205 /* Fill in identity legacy mappings where no override */
1206 mp_config_acpi_legacy_irqs();
1207
1208 count =
1209 acpi_table_parse_madt(ACPI_MADT_TYPE_NMI_SOURCE, acpi_parse_nmi_src,
1210 nr_irqs);
1211 if (count < 0) {
1212 printk(KERN_ERR PREFIX "Error parsing NMI SRC entry\n");
1213 /* TBD: Cleanup to allow fallback to MPS */
1214 return count;
1215 }
1216
1217 return 0;
1218 }
1219 #else
1220 static inline int acpi_parse_madt_ioapic_entries(void)
1221 {
1222 return -1;
1223 }
1224 #endif /* !CONFIG_X86_IO_APIC */
1225
1226 static void __init early_acpi_process_madt(void)
1227 {
1228 #ifdef CONFIG_X86_LOCAL_APIC
1229 int error;
1230
1231 if (!acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) {
1232
1233 /*
1234 * Parse MADT LAPIC entries
1235 */
1236 error = early_acpi_parse_madt_lapic_addr_ovr();
1237 if (!error) {
1238 acpi_lapic = 1;
1239 smp_found_config = 1;
1240 }
1241 if (error == -EINVAL) {
1242 /*
1243 * Dell Precision Workstation 410, 610 come here.
1244 */
1245 printk(KERN_ERR PREFIX
1246 "Invalid BIOS MADT, disabling ACPI\n");
1247 disable_acpi();
1248 }
1249 }
1250 #endif
1251 }
1252
1253 static void __init acpi_process_madt(void)
1254 {
1255 #ifdef CONFIG_X86_LOCAL_APIC
1256 int error;
1257
1258 if (!acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) {
1259
1260 /*
1261 * Parse MADT LAPIC entries
1262 */
1263 error = acpi_parse_madt_lapic_entries();
1264 if (!error) {
1265 acpi_lapic = 1;
1266
1267 /*
1268 * Parse MADT IO-APIC entries
1269 */
1270 error = acpi_parse_madt_ioapic_entries();
1271 if (!error) {
1272 acpi_set_irq_model_ioapic();
1273
1274 smp_found_config = 1;
1275 }
1276 }
1277 if (error == -EINVAL) {
1278 /*
1279 * Dell Precision Workstation 410, 610 come here.
1280 */
1281 printk(KERN_ERR PREFIX
1282 "Invalid BIOS MADT, disabling ACPI\n");
1283 disable_acpi();
1284 }
1285 } else {
1286 /*
1287 * ACPI found no MADT, and so ACPI wants UP PIC mode.
1288 * In the event an MPS table was found, forget it.
1289 * Boot with "acpi=off" to use MPS on such a system.
1290 */
1291 if (smp_found_config) {
1292 printk(KERN_WARNING PREFIX
1293 "No APIC-table, disabling MPS\n");
1294 smp_found_config = 0;
1295 }
1296 }
1297
1298 /*
1299 * ACPI supports both logical (e.g. Hyper-Threading) and physical
1300 * processors, where MPS only supports physical.
1301 */
1302 if (acpi_lapic && acpi_ioapic)
1303 printk(KERN_INFO "Using ACPI (MADT) for SMP configuration "
1304 "information\n");
1305 else if (acpi_lapic)
1306 printk(KERN_INFO "Using ACPI for processor (LAPIC) "
1307 "configuration information\n");
1308 #endif
1309 return;
1310 }
1311
1312 static int __init disable_acpi_irq(const struct dmi_system_id *d)
1313 {
1314 if (!acpi_force) {
1315 printk(KERN_NOTICE "%s detected: force use of acpi=noirq\n",
1316 d->ident);
1317 acpi_noirq_set();
1318 }
1319 return 0;
1320 }
1321
1322 static int __init disable_acpi_pci(const struct dmi_system_id *d)
1323 {
1324 if (!acpi_force) {
1325 printk(KERN_NOTICE "%s detected: force use of pci=noacpi\n",
1326 d->ident);
1327 acpi_disable_pci();
1328 }
1329 return 0;
1330 }
1331
1332 static int __init dmi_disable_acpi(const struct dmi_system_id *d)
1333 {
1334 if (!acpi_force) {
1335 printk(KERN_NOTICE "%s detected: acpi off\n", d->ident);
1336 disable_acpi();
1337 } else {
1338 printk(KERN_NOTICE
1339 "Warning: DMI blacklist says broken, but acpi forced\n");
1340 }
1341 return 0;
1342 }
1343
1344 /*
1345 * Force ignoring BIOS IRQ0 override
1346 */
1347 static int __init dmi_ignore_irq0_timer_override(const struct dmi_system_id *d)
1348 {
1349 if (!acpi_skip_timer_override) {
1350 pr_notice("%s detected: Ignoring BIOS IRQ0 override\n",
1351 d->ident);
1352 acpi_skip_timer_override = 1;
1353 }
1354 return 0;
1355 }
1356
1357 /*
1358 * If your system is blacklisted here, but you find that acpi=force
1359 * works for you, please contact linux-acpi@vger.kernel.org
1360 */
1361 static struct dmi_system_id __initdata acpi_dmi_table[] = {
1362 /*
1363 * Boxes that need ACPI disabled
1364 */
1365 {
1366 .callback = dmi_disable_acpi,
1367 .ident = "IBM Thinkpad",
1368 .matches = {
1369 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
1370 DMI_MATCH(DMI_BOARD_NAME, "2629H1G"),
1371 },
1372 },
1373
1374 /*
1375 * Boxes that need ACPI PCI IRQ routing disabled
1376 */
1377 {
1378 .callback = disable_acpi_irq,
1379 .ident = "ASUS A7V",
1380 .matches = {
1381 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC"),
1382 DMI_MATCH(DMI_BOARD_NAME, "<A7V>"),
1383 /* newer BIOS, Revision 1011, does work */
1384 DMI_MATCH(DMI_BIOS_VERSION,
1385 "ASUS A7V ACPI BIOS Revision 1007"),
1386 },
1387 },
1388 {
1389 /*
1390 * Latest BIOS for IBM 600E (1.16) has bad pcinum
1391 * for LPC bridge, which is needed for the PCI
1392 * interrupt links to work. DSDT fix is in bug 5966.
1393 * 2645, 2646 model numbers are shared with 600/600E/600X
1394 */
1395 .callback = disable_acpi_irq,
1396 .ident = "IBM Thinkpad 600 Series 2645",
1397 .matches = {
1398 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
1399 DMI_MATCH(DMI_BOARD_NAME, "2645"),
1400 },
1401 },
1402 {
1403 .callback = disable_acpi_irq,
1404 .ident = "IBM Thinkpad 600 Series 2646",
1405 .matches = {
1406 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
1407 DMI_MATCH(DMI_BOARD_NAME, "2646"),
1408 },
1409 },
1410 /*
1411 * Boxes that need ACPI PCI IRQ routing and PCI scan disabled
1412 */
1413 { /* _BBN 0 bug */
1414 .callback = disable_acpi_pci,
1415 .ident = "ASUS PR-DLS",
1416 .matches = {
1417 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."),
1418 DMI_MATCH(DMI_BOARD_NAME, "PR-DLS"),
1419 DMI_MATCH(DMI_BIOS_VERSION,
1420 "ASUS PR-DLS ACPI BIOS Revision 1010"),
1421 DMI_MATCH(DMI_BIOS_DATE, "03/21/2003")
1422 },
1423 },
1424 {
1425 .callback = disable_acpi_pci,
1426 .ident = "Acer TravelMate 36x Laptop",
1427 .matches = {
1428 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
1429 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 360"),
1430 },
1431 },
1432 {}
1433 };
1434
1435 /* second table for DMI checks that should run after early-quirks */
1436 static struct dmi_system_id __initdata acpi_dmi_table_late[] = {
1437 /*
1438 * HP laptops which use a DSDT reporting as HP/SB400/10000,
1439 * which includes some code which overrides all temperature
1440 * trip points to 16C if the INTIN2 input of the I/O APIC
1441 * is enabled. This input is incorrectly designated the
1442 * ISA IRQ 0 via an interrupt source override even though
1443 * it is wired to the output of the master 8259A and INTIN0
1444 * is not connected at all. Force ignoring BIOS IRQ0
1445 * override in that cases.
1446 */
1447 {
1448 .callback = dmi_ignore_irq0_timer_override,
1449 .ident = "HP nx6115 laptop",
1450 .matches = {
1451 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1452 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6115"),
1453 },
1454 },
1455 {
1456 .callback = dmi_ignore_irq0_timer_override,
1457 .ident = "HP NX6125 laptop",
1458 .matches = {
1459 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1460 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6125"),
1461 },
1462 },
1463 {
1464 .callback = dmi_ignore_irq0_timer_override,
1465 .ident = "HP NX6325 laptop",
1466 .matches = {
1467 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1468 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6325"),
1469 },
1470 },
1471 {
1472 .callback = dmi_ignore_irq0_timer_override,
1473 .ident = "HP 6715b laptop",
1474 .matches = {
1475 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1476 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq 6715b"),
1477 },
1478 },
1479 {
1480 .callback = dmi_ignore_irq0_timer_override,
1481 .ident = "FUJITSU SIEMENS",
1482 .matches = {
1483 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
1484 DMI_MATCH(DMI_PRODUCT_NAME, "AMILO PRO V2030"),
1485 },
1486 },
1487 {}
1488 };
1489
1490 /*
1491 * acpi_boot_table_init() and acpi_boot_init()
1492 * called from setup_arch(), always.
1493 * 1. checksums all tables
1494 * 2. enumerates lapics
1495 * 3. enumerates io-apics
1496 *
1497 * acpi_table_init() is separate to allow reading SRAT without
1498 * other side effects.
1499 *
1500 * side effects of acpi_boot_init:
1501 * acpi_lapic = 1 if LAPIC found
1502 * acpi_ioapic = 1 if IOAPIC found
1503 * if (acpi_lapic && acpi_ioapic) smp_found_config = 1;
1504 * if acpi_blacklisted() acpi_disabled = 1;
1505 * acpi_irq_model=...
1506 * ...
1507 */
1508
1509 void __init acpi_boot_table_init(void)
1510 {
1511 dmi_check_system(acpi_dmi_table);
1512
1513 /*
1514 * If acpi_disabled, bail out
1515 */
1516 if (acpi_disabled)
1517 return;
1518
1519 /*
1520 * Initialize the ACPI boot-time table parser.
1521 */
1522 if (acpi_table_init()) {
1523 disable_acpi();
1524 return;
1525 }
1526
1527 acpi_table_parse(ACPI_SIG_BOOT, acpi_parse_sbf);
1528
1529 /*
1530 * blacklist may disable ACPI entirely
1531 */
1532 if (acpi_blacklisted()) {
1533 if (acpi_force) {
1534 printk(KERN_WARNING PREFIX "acpi=force override\n");
1535 } else {
1536 printk(KERN_WARNING PREFIX "Disabling ACPI support\n");
1537 disable_acpi();
1538 return;
1539 }
1540 }
1541 }
1542
1543 int __init early_acpi_boot_init(void)
1544 {
1545 /*
1546 * If acpi_disabled, bail out
1547 */
1548 if (acpi_disabled)
1549 return 1;
1550
1551 /*
1552 * Process the Multiple APIC Description Table (MADT), if present
1553 */
1554 early_acpi_process_madt();
1555
1556 return 0;
1557 }
1558
1559 int __init acpi_boot_init(void)
1560 {
1561 /* those are executed after early-quirks are executed */
1562 dmi_check_system(acpi_dmi_table_late);
1563
1564 /*
1565 * If acpi_disabled, bail out
1566 */
1567 if (acpi_disabled)
1568 return 1;
1569
1570 acpi_table_parse(ACPI_SIG_BOOT, acpi_parse_sbf);
1571
1572 /*
1573 * set sci_int and PM timer address
1574 */
1575 acpi_table_parse(ACPI_SIG_FADT, acpi_parse_fadt);
1576
1577 /*
1578 * Process the Multiple APIC Description Table (MADT), if present
1579 */
1580 acpi_process_madt();
1581
1582 acpi_table_parse(ACPI_SIG_HPET, acpi_parse_hpet);
1583
1584 if (!acpi_noirq)
1585 x86_init.pci.init = pci_acpi_init;
1586
1587 return 0;
1588 }
1589
1590 static int __init parse_acpi(char *arg)
1591 {
1592 if (!arg)
1593 return -EINVAL;
1594
1595 /* "acpi=off" disables both ACPI table parsing and interpreter */
1596 if (strcmp(arg, "off") == 0) {
1597 disable_acpi();
1598 }
1599 /* acpi=force to over-ride black-list */
1600 else if (strcmp(arg, "force") == 0) {
1601 acpi_force = 1;
1602 acpi_disabled = 0;
1603 }
1604 /* acpi=strict disables out-of-spec workarounds */
1605 else if (strcmp(arg, "strict") == 0) {
1606 acpi_strict = 1;
1607 }
1608 /* acpi=rsdt use RSDT instead of XSDT */
1609 else if (strcmp(arg, "rsdt") == 0) {
1610 acpi_rsdt_forced = 1;
1611 }
1612 /* "acpi=noirq" disables ACPI interrupt routing */
1613 else if (strcmp(arg, "noirq") == 0) {
1614 acpi_noirq_set();
1615 }
1616 /* "acpi=copy_dsdt" copys DSDT */
1617 else if (strcmp(arg, "copy_dsdt") == 0) {
1618 acpi_gbl_copy_dsdt_locally = 1;
1619 } else {
1620 /* Core will printk when we return error. */
1621 return -EINVAL;
1622 }
1623 return 0;
1624 }
1625 early_param("acpi", parse_acpi);
1626
1627 /* FIXME: Using pci= for an ACPI parameter is a travesty. */
1628 static int __init parse_pci(char *arg)
1629 {
1630 if (arg && strcmp(arg, "noacpi") == 0)
1631 acpi_disable_pci();
1632 return 0;
1633 }
1634 early_param("pci", parse_pci);
1635
1636 int __init acpi_mps_check(void)
1637 {
1638 #if defined(CONFIG_X86_LOCAL_APIC) && !defined(CONFIG_X86_MPPARSE)
1639 /* mptable code is not built-in*/
1640 if (acpi_disabled || acpi_noirq) {
1641 printk(KERN_WARNING "MPS support code is not built-in.\n"
1642 "Using acpi=off or acpi=noirq or pci=noacpi "
1643 "may have problem\n");
1644 return 1;
1645 }
1646 #endif
1647 return 0;
1648 }
1649
1650 #ifdef CONFIG_X86_IO_APIC
1651 static int __init parse_acpi_skip_timer_override(char *arg)
1652 {
1653 acpi_skip_timer_override = 1;
1654 return 0;
1655 }
1656 early_param("acpi_skip_timer_override", parse_acpi_skip_timer_override);
1657
1658 static int __init parse_acpi_use_timer_override(char *arg)
1659 {
1660 acpi_use_timer_override = 1;
1661 return 0;
1662 }
1663 early_param("acpi_use_timer_override", parse_acpi_use_timer_override);
1664 #endif /* CONFIG_X86_IO_APIC */
1665
1666 static int __init setup_acpi_sci(char *s)
1667 {
1668 if (!s)
1669 return -EINVAL;
1670 if (!strcmp(s, "edge"))
1671 acpi_sci_flags = ACPI_MADT_TRIGGER_EDGE |
1672 (acpi_sci_flags & ~ACPI_MADT_TRIGGER_MASK);
1673 else if (!strcmp(s, "level"))
1674 acpi_sci_flags = ACPI_MADT_TRIGGER_LEVEL |
1675 (acpi_sci_flags & ~ACPI_MADT_TRIGGER_MASK);
1676 else if (!strcmp(s, "high"))
1677 acpi_sci_flags = ACPI_MADT_POLARITY_ACTIVE_HIGH |
1678 (acpi_sci_flags & ~ACPI_MADT_POLARITY_MASK);
1679 else if (!strcmp(s, "low"))
1680 acpi_sci_flags = ACPI_MADT_POLARITY_ACTIVE_LOW |
1681 (acpi_sci_flags & ~ACPI_MADT_POLARITY_MASK);
1682 else
1683 return -EINVAL;
1684 return 0;
1685 }
1686 early_param("acpi_sci", setup_acpi_sci);
1687
1688 int __acpi_acquire_global_lock(unsigned int *lock)
1689 {
1690 unsigned int old, new, val;
1691 do {
1692 old = *lock;
1693 new = (((old & ~0x3) + 2) + ((old >> 1) & 0x1));
1694 val = cmpxchg(lock, old, new);
1695 } while (unlikely (val != old));
1696 return (new < 3) ? -1 : 0;
1697 }
1698
1699 int __acpi_release_global_lock(unsigned int *lock)
1700 {
1701 unsigned int old, new, val;
1702 do {
1703 old = *lock;
1704 new = old & ~0x3;
1705 val = cmpxchg(lock, old, new);
1706 } while (unlikely (val != old));
1707 return old & 0x1;
1708 }
1709
1710 void __init arch_reserve_mem_area(acpi_physical_address addr, size_t size)
1711 {
1712 e820_add_region(addr, size, E820_ACPI);
1713 update_e820();
1714 }
Linux kernel - Deliverables
This page took 0.064104 seconds and 6 git commands to generate.