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Linux 3.12.28
[linux/fpc-iii.git] / arch / x86 / kernel / acpi / boot.c
blob40c76604199f76e9263f94c10c249f2eee8e40dc
1 /*
2 * boot.c - Architecture-Specific Low-Level ACPI Boot Support
3 *
4 * Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
5 * Copyright (C) 2001 Jun Nakajima <jun.nakajima@intel.com>
6 *
7 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 *
23 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
24 */
25
26 #include <linux/init.h>
27 #include <linux/acpi.h>
28 #include <linux/acpi_pmtmr.h>
29 #include <linux/efi.h>
30 #include <linux/cpumask.h>
31 #include <linux/module.h>
32 #include <linux/dmi.h>
33 #include <linux/irq.h>
34 #include <linux/slab.h>
35 #include <linux/bootmem.h>
36 #include <linux/ioport.h>
37 #include <linux/pci.h>
38
39 #include <asm/pci_x86.h>
40 #include <asm/pgtable.h>
41 #include <asm/io_apic.h>
42 #include <asm/apic.h>
43 #include <asm/io.h>
44 #include <asm/mpspec.h>
45 #include <asm/smp.h>
46
47 #include "sleep.h" /* To include x86_acpi_suspend_lowlevel */
48 static int __initdata acpi_force = 0;
49 u32 acpi_rsdt_forced;
50 int acpi_disabled;
51 EXPORT_SYMBOL(acpi_disabled);
52
53 #ifdef CONFIG_X86_64
54 # include <asm/proto.h>
55 #endif /* X86 */
56
57 #define BAD_MADT_ENTRY(entry, end) ( \
58 (!entry) || (unsigned long)entry + sizeof(*entry) > end || \
59 ((struct acpi_subtable_header *)entry)->length < sizeof(*entry))
60
61 #define PREFIX "ACPI: "
62
63 int acpi_noirq; /* skip ACPI IRQ initialization */
64 int acpi_pci_disabled; /* skip ACPI PCI scan and IRQ initialization */
65 EXPORT_SYMBOL(acpi_pci_disabled);
66
67 int acpi_lapic;
68 int acpi_ioapic;
69 int acpi_strict;
70 int acpi_disable_cmcff;
71
72 u8 acpi_sci_flags __initdata;
73 int acpi_sci_override_gsi __initdata;
74 int acpi_skip_timer_override __initdata;
75 int acpi_use_timer_override __initdata;
76 int acpi_fix_pin2_polarity __initdata;
77
78 #ifdef CONFIG_X86_LOCAL_APIC
79 static u64 acpi_lapic_addr __initdata = APIC_DEFAULT_PHYS_BASE;
80 #endif
81
82 #ifndef __HAVE_ARCH_CMPXCHG
83 #warning ACPI uses CMPXCHG, i486 and later hardware
84 #endif
85
86 /* --------------------------------------------------------------------------
87 Boot-time Configuration
88 -------------------------------------------------------------------------- */
89
90 /*
91 * The default interrupt routing model is PIC (8259). This gets
92 * overridden if IOAPICs are enumerated (below).
93 */
94 enum acpi_irq_model_id acpi_irq_model = ACPI_IRQ_MODEL_PIC;
95
96
97 /*
98 * ISA irqs by default are the first 16 gsis but can be
99 * any gsi as specified by an interrupt source override.
100 */
101 static u32 isa_irq_to_gsi[NR_IRQS_LEGACY] __read_mostly = {
102 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15
103 };
104
105 static unsigned int gsi_to_irq(unsigned int gsi)
106 {
107 unsigned int irq = gsi + NR_IRQS_LEGACY;
108 unsigned int i;
109
110 for (i = 0; i < NR_IRQS_LEGACY; i++) {
111 if (isa_irq_to_gsi[i] == gsi) {
112 return i;
113 }
114 }
115
116 /* Provide an identity mapping of gsi == irq
117 * except on truly weird platforms that have
118 * non isa irqs in the first 16 gsis.
119 */
120 if (gsi >= NR_IRQS_LEGACY)
121 irq = gsi;
122 else
123 irq = gsi_top + gsi;
124
125 return irq;
126 }
127
128 static u32 irq_to_gsi(int irq)
129 {
130 unsigned int gsi;
131
132 if (irq < NR_IRQS_LEGACY)
133 gsi = isa_irq_to_gsi[irq];
134 else if (irq < gsi_top)
135 gsi = irq;
136 else if (irq < (gsi_top + NR_IRQS_LEGACY))
137 gsi = irq - gsi_top;
138 else
139 gsi = 0xffffffff;
140
141 return gsi;
142 }
143
144 /*
145 * This is just a simple wrapper around early_ioremap(),
146 * with sanity checks for phys == 0 and size == 0.
147 */
148 char *__init __acpi_map_table(unsigned long phys, unsigned long size)
149 {
150
151 if (!phys || !size)
152 return NULL;
153
154 return early_ioremap(phys, size);
155 }
156
157 void __init __acpi_unmap_table(char *map, unsigned long size)
158 {
159 if (!map || !size)
160 return;
161
162 early_iounmap(map, size);
163 }
164
165 #ifdef CONFIG_X86_LOCAL_APIC
166 static int __init acpi_parse_madt(struct acpi_table_header *table)
167 {
168 struct acpi_table_madt *madt = NULL;
169
170 if (!cpu_has_apic)
171 return -EINVAL;
172
173 madt = (struct acpi_table_madt *)table;
174 if (!madt) {
175 printk(KERN_WARNING PREFIX "Unable to map MADT\n");
176 return -ENODEV;
177 }
178
179 if (madt->address) {
180 acpi_lapic_addr = (u64) madt->address;
181
182 printk(KERN_DEBUG PREFIX "Local APIC address 0x%08x\n",
183 madt->address);
184 }
185
186 default_acpi_madt_oem_check(madt->header.oem_id,
187 madt->header.oem_table_id);
188
189 return 0;
190 }
191
192 static void acpi_register_lapic(int id, u8 enabled)
193 {
194 unsigned int ver = 0;
195
196 if (id >= MAX_LOCAL_APIC) {
197 printk(KERN_INFO PREFIX "skipped apicid that is too big\n");
198 return;
199 }
200
201 if (!enabled) {
202 ++disabled_cpus;
203 return;
204 }
205
206 if (boot_cpu_physical_apicid != -1U)
207 ver = apic_version[boot_cpu_physical_apicid];
208
209 generic_processor_info(id, ver);
210 }
211
212 static int __init
213 acpi_parse_x2apic(struct acpi_subtable_header *header, const unsigned long end)
214 {
215 struct acpi_madt_local_x2apic *processor = NULL;
216 int apic_id;
217 u8 enabled;
218
219 processor = (struct acpi_madt_local_x2apic *)header;
220
221 if (BAD_MADT_ENTRY(processor, end))
222 return -EINVAL;
223
224 acpi_table_print_madt_entry(header);
225
226 apic_id = processor->local_apic_id;
227 enabled = processor->lapic_flags & ACPI_MADT_ENABLED;
228 #ifdef CONFIG_X86_X2APIC
229 /*
230 * We need to register disabled CPU as well to permit
231 * counting disabled CPUs. This allows us to size
232 * cpus_possible_map more accurately, to permit
233 * to not preallocating memory for all NR_CPUS
234 * when we use CPU hotplug.
235 */
236 if (!apic->apic_id_valid(apic_id) && enabled)
237 printk(KERN_WARNING PREFIX "x2apic entry ignored\n");
238 else
239 acpi_register_lapic(apic_id, enabled);
240 #else
241 printk(KERN_WARNING PREFIX "x2apic entry ignored\n");
242 #endif
243
244 return 0;
245 }
246
247 static int __init
248 acpi_parse_lapic(struct acpi_subtable_header * header, const unsigned long end)
249 {
250 struct acpi_madt_local_apic *processor = NULL;
251
252 processor = (struct acpi_madt_local_apic *)header;
253
254 if (BAD_MADT_ENTRY(processor, end))
255 return -EINVAL;
256
257 acpi_table_print_madt_entry(header);
258
259 /*
260 * We need to register disabled CPU as well to permit
261 * counting disabled CPUs. This allows us to size
262 * cpus_possible_map more accurately, to permit
263 * to not preallocating memory for all NR_CPUS
264 * when we use CPU hotplug.
265 */
266 acpi_register_lapic(processor->id, /* APIC ID */
267 processor->lapic_flags & ACPI_MADT_ENABLED);
268
269 return 0;
270 }
271
272 static int __init
273 acpi_parse_sapic(struct acpi_subtable_header *header, const unsigned long end)
274 {
275 struct acpi_madt_local_sapic *processor = NULL;
276
277 processor = (struct acpi_madt_local_sapic *)header;
278
279 if (BAD_MADT_ENTRY(processor, end))
280 return -EINVAL;
281
282 acpi_table_print_madt_entry(header);
283
284 acpi_register_lapic((processor->id << 8) | processor->eid,/* APIC ID */
285 processor->lapic_flags & ACPI_MADT_ENABLED);
286
287 return 0;
288 }
289
290 static int __init
291 acpi_parse_lapic_addr_ovr(struct acpi_subtable_header * header,
292 const unsigned long end)
293 {
294 struct acpi_madt_local_apic_override *lapic_addr_ovr = NULL;
295
296 lapic_addr_ovr = (struct acpi_madt_local_apic_override *)header;
297
298 if (BAD_MADT_ENTRY(lapic_addr_ovr, end))
299 return -EINVAL;
300
301 acpi_lapic_addr = lapic_addr_ovr->address;
302
303 return 0;
304 }
305
306 static int __init
307 acpi_parse_x2apic_nmi(struct acpi_subtable_header *header,
308 const unsigned long end)
309 {
310 struct acpi_madt_local_x2apic_nmi *x2apic_nmi = NULL;
311
312 x2apic_nmi = (struct acpi_madt_local_x2apic_nmi *)header;
313
314 if (BAD_MADT_ENTRY(x2apic_nmi, end))
315 return -EINVAL;
316
317 acpi_table_print_madt_entry(header);
318
319 if (x2apic_nmi->lint != 1)
320 printk(KERN_WARNING PREFIX "NMI not connected to LINT 1!\n");
321
322 return 0;
323 }
324
325 static int __init
326 acpi_parse_lapic_nmi(struct acpi_subtable_header * header, const unsigned long end)
327 {
328 struct acpi_madt_local_apic_nmi *lapic_nmi = NULL;
329
330 lapic_nmi = (struct acpi_madt_local_apic_nmi *)header;
331
332 if (BAD_MADT_ENTRY(lapic_nmi, end))
333 return -EINVAL;
334
335 acpi_table_print_madt_entry(header);
336
337 if (lapic_nmi->lint != 1)
338 printk(KERN_WARNING PREFIX "NMI not connected to LINT 1!\n");
339
340 return 0;
341 }
342
343 #endif /*CONFIG_X86_LOCAL_APIC */
344
345 #ifdef CONFIG_X86_IO_APIC
346
347 static int __init
348 acpi_parse_ioapic(struct acpi_subtable_header * header, const unsigned long end)
349 {
350 struct acpi_madt_io_apic *ioapic = NULL;
351
352 ioapic = (struct acpi_madt_io_apic *)header;
353
354 if (BAD_MADT_ENTRY(ioapic, end))
355 return -EINVAL;
356
357 acpi_table_print_madt_entry(header);
358
359 mp_register_ioapic(ioapic->id,
360 ioapic->address, ioapic->global_irq_base);
361
362 return 0;
363 }
364
365 /*
366 * Parse Interrupt Source Override for the ACPI SCI
367 */
368 static void __init acpi_sci_ioapic_setup(u8 bus_irq, u16 polarity, u16 trigger, u32 gsi)
369 {
370 if (trigger == 0) /* compatible SCI trigger is level */
371 trigger = 3;
372
373 if (polarity == 0) /* compatible SCI polarity is low */
374 polarity = 3;
375
376 /* Command-line over-ride via acpi_sci= */
377 if (acpi_sci_flags & ACPI_MADT_TRIGGER_MASK)
378 trigger = (acpi_sci_flags & ACPI_MADT_TRIGGER_MASK) >> 2;
379
380 if (acpi_sci_flags & ACPI_MADT_POLARITY_MASK)
381 polarity = acpi_sci_flags & ACPI_MADT_POLARITY_MASK;
382
383 /*
384 * mp_config_acpi_legacy_irqs() already setup IRQs < 16
385 * If GSI is < 16, this will update its flags,
386 * else it will create a new mp_irqs[] entry.
387 */
388 mp_override_legacy_irq(bus_irq, polarity, trigger, gsi);
389
390 /*
391 * stash over-ride to indicate we've been here
392 * and for later update of acpi_gbl_FADT
393 */
394 acpi_sci_override_gsi = gsi;
395 return;
396 }
397
398 static int __init
399 acpi_parse_int_src_ovr(struct acpi_subtable_header * header,
400 const unsigned long end)
401 {
402 struct acpi_madt_interrupt_override *intsrc = NULL;
403
404 intsrc = (struct acpi_madt_interrupt_override *)header;
405
406 if (BAD_MADT_ENTRY(intsrc, end))
407 return -EINVAL;
408
409 acpi_table_print_madt_entry(header);
410
411 if (intsrc->source_irq == acpi_gbl_FADT.sci_interrupt) {
412 acpi_sci_ioapic_setup(intsrc->source_irq,
413 intsrc->inti_flags & ACPI_MADT_POLARITY_MASK,
414 (intsrc->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2,
415 intsrc->global_irq);
416 return 0;
417 }
418
419 if (intsrc->source_irq == 0) {
420 if (acpi_skip_timer_override) {
421 printk(PREFIX "BIOS IRQ0 override ignored.\n");
422 return 0;
423 }
424
425 if ((intsrc->global_irq == 2) && acpi_fix_pin2_polarity
426 && (intsrc->inti_flags & ACPI_MADT_POLARITY_MASK)) {
427 intsrc->inti_flags &= ~ACPI_MADT_POLARITY_MASK;
428 printk(PREFIX "BIOS IRQ0 pin2 override: forcing polarity to high active.\n");
429 }
430 }
431
432 mp_override_legacy_irq(intsrc->source_irq,
433 intsrc->inti_flags & ACPI_MADT_POLARITY_MASK,
434 (intsrc->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2,
435 intsrc->global_irq);
436
437 return 0;
438 }
439
440 static int __init
441 acpi_parse_nmi_src(struct acpi_subtable_header * header, const unsigned long end)
442 {
443 struct acpi_madt_nmi_source *nmi_src = NULL;
444
445 nmi_src = (struct acpi_madt_nmi_source *)header;
446
447 if (BAD_MADT_ENTRY(nmi_src, end))
448 return -EINVAL;
449
450 acpi_table_print_madt_entry(header);
451
452 /* TBD: Support nimsrc entries? */
453
454 return 0;
455 }
456
457 #endif /* CONFIG_X86_IO_APIC */
458
459 /*
460 * acpi_pic_sci_set_trigger()
461 *
462 * use ELCR to set PIC-mode trigger type for SCI
463 *
464 * If a PIC-mode SCI is not recognized or gives spurious IRQ7's
465 * it may require Edge Trigger -- use "acpi_sci=edge"
466 *
467 * Port 0x4d0-4d1 are ECLR1 and ECLR2, the Edge/Level Control Registers
468 * for the 8259 PIC. bit[n] = 1 means irq[n] is Level, otherwise Edge.
469 * ECLR1 is IRQs 0-7 (IRQ 0, 1, 2 must be 0)
470 * ECLR2 is IRQs 8-15 (IRQ 8, 13 must be 0)
471 */
472
473 void __init acpi_pic_sci_set_trigger(unsigned int irq, u16 trigger)
474 {
475 unsigned int mask = 1 << irq;
476 unsigned int old, new;
477
478 /* Real old ELCR mask */
479 old = inb(0x4d0) | (inb(0x4d1) << 8);
480
481 /*
482 * If we use ACPI to set PCI IRQs, then we should clear ELCR
483 * since we will set it correctly as we enable the PCI irq
484 * routing.
485 */
486 new = acpi_noirq ? old : 0;
487
488 /*
489 * Update SCI information in the ELCR, it isn't in the PCI
490 * routing tables..
491 */
492 switch (trigger) {
493 case 1: /* Edge - clear */
494 new &= ~mask;
495 break;
496 case 3: /* Level - set */
497 new |= mask;
498 break;
499 }
500
501 if (old == new)
502 return;
503
504 printk(PREFIX "setting ELCR to %04x (from %04x)\n", new, old);
505 outb(new, 0x4d0);
506 outb(new >> 8, 0x4d1);
507 }
508
509 int acpi_gsi_to_irq(u32 gsi, unsigned int *irq)
510 {
511 *irq = gsi_to_irq(gsi);
512
513 #ifdef CONFIG_X86_IO_APIC
514 if (acpi_irq_model == ACPI_IRQ_MODEL_IOAPIC)
515 setup_IO_APIC_irq_extra(gsi);
516 #endif
517
518 return 0;
519 }
520 EXPORT_SYMBOL_GPL(acpi_gsi_to_irq);
521
522 int acpi_isa_irq_to_gsi(unsigned isa_irq, u32 *gsi)
523 {
524 if (isa_irq >= 16)
525 return -1;
526 *gsi = irq_to_gsi(isa_irq);
527 return 0;
528 }
529
530 static int acpi_register_gsi_pic(struct device *dev, u32 gsi,
531 int trigger, int polarity)
532 {
533 #ifdef CONFIG_PCI
534 /*
535 * Make sure all (legacy) PCI IRQs are set as level-triggered.
536 */
537 if (trigger == ACPI_LEVEL_SENSITIVE)
538 eisa_set_level_irq(gsi);
539 #endif
540
541 return gsi;
542 }
543
544 static int acpi_register_gsi_ioapic(struct device *dev, u32 gsi,
545 int trigger, int polarity)
546 {
547 #ifdef CONFIG_X86_IO_APIC
548 gsi = mp_register_gsi(dev, gsi, trigger, polarity);
549 #endif
550
551 return gsi;
552 }
553
554 int (*__acpi_register_gsi)(struct device *dev, u32 gsi,
555 int trigger, int polarity) = acpi_register_gsi_pic;
556
557 #ifdef CONFIG_ACPI_SLEEP
558 int (*acpi_suspend_lowlevel)(void) = x86_acpi_suspend_lowlevel;
559 #else
560 int (*acpi_suspend_lowlevel)(void);
561 #endif
562
563 /*
564 * success: return IRQ number (>=0)
565 * failure: return < 0
566 */
567 int acpi_register_gsi(struct device *dev, u32 gsi, int trigger, int polarity)
568 {
569 unsigned int irq;
570 unsigned int plat_gsi = gsi;
571
572 plat_gsi = (*__acpi_register_gsi)(dev, gsi, trigger, polarity);
573 irq = gsi_to_irq(plat_gsi);
574
575 return irq;
576 }
577 EXPORT_SYMBOL_GPL(acpi_register_gsi);
578
579 void acpi_unregister_gsi(u32 gsi)
580 {
581 }
582 EXPORT_SYMBOL_GPL(acpi_unregister_gsi);
583
584 void __init acpi_set_irq_model_pic(void)
585 {
586 acpi_irq_model = ACPI_IRQ_MODEL_PIC;
587 __acpi_register_gsi = acpi_register_gsi_pic;
588 acpi_ioapic = 0;
589 }
590
591 void __init acpi_set_irq_model_ioapic(void)
592 {
593 acpi_irq_model = ACPI_IRQ_MODEL_IOAPIC;
594 __acpi_register_gsi = acpi_register_gsi_ioapic;
595 acpi_ioapic = 1;
596 }
597
598 /*
599 * ACPI based hotplug support for CPU
600 */
601 #ifdef CONFIG_ACPI_HOTPLUG_CPU
602 #include <acpi/processor.h>
603
604 static void acpi_map_cpu2node(acpi_handle handle, int cpu, int physid)
605 {
606 #ifdef CONFIG_ACPI_NUMA
607 int nid;
608
609 nid = acpi_get_node(handle);
610 if (nid == -1 || !node_online(nid))
611 return;
612 set_apicid_to_node(physid, nid);
613 numa_set_node(cpu, nid);
614 #endif
615 }
616
617 static int _acpi_map_lsapic(acpi_handle handle, int *pcpu)
618 {
619 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
620 union acpi_object *obj;
621 struct acpi_madt_local_apic *lapic;
622 cpumask_var_t tmp_map, new_map;
623 u8 physid;
624 int cpu;
625 int retval = -ENOMEM;
626
627 if (ACPI_FAILURE(acpi_evaluate_object(handle, "_MAT", NULL, &buffer)))
628 return -EINVAL;
629
630 if (!buffer.length || !buffer.pointer)
631 return -EINVAL;
632
633 obj = buffer.pointer;
634 if (obj->type != ACPI_TYPE_BUFFER ||
635 obj->buffer.length < sizeof(*lapic)) {
636 kfree(buffer.pointer);
637 return -EINVAL;
638 }
639
640 lapic = (struct acpi_madt_local_apic *)obj->buffer.pointer;
641
642 if (lapic->header.type != ACPI_MADT_TYPE_LOCAL_APIC ||
643 !(lapic->lapic_flags & ACPI_MADT_ENABLED)) {
644 kfree(buffer.pointer);
645 return -EINVAL;
646 }
647
648 physid = lapic->id;
649
650 kfree(buffer.pointer);
651 buffer.length = ACPI_ALLOCATE_BUFFER;
652 buffer.pointer = NULL;
653 lapic = NULL;
654
655 if (!alloc_cpumask_var(&tmp_map, GFP_KERNEL))
656 goto out;
657
658 if (!alloc_cpumask_var(&new_map, GFP_KERNEL))
659 goto free_tmp_map;
660
661 cpumask_copy(tmp_map, cpu_present_mask);
662 acpi_register_lapic(physid, ACPI_MADT_ENABLED);
663
664 /*
665 * If acpi_register_lapic successfully generates a new logical cpu
666 * number, then the following will get us exactly what was mapped
667 */
668 cpumask_andnot(new_map, cpu_present_mask, tmp_map);
669 if (cpumask_empty(new_map)) {
670 printk ("Unable to map lapic to logical cpu number\n");
671 retval = -EINVAL;
672 goto free_new_map;
673 }
674
675 acpi_processor_set_pdc(handle);
676
677 cpu = cpumask_first(new_map);
678 acpi_map_cpu2node(handle, cpu, physid);
679
680 *pcpu = cpu;
681 retval = 0;
682
683 free_new_map:
684 free_cpumask_var(new_map);
685 free_tmp_map:
686 free_cpumask_var(tmp_map);
687 out:
688 return retval;
689 }
690
691 /* wrapper to silence section mismatch warning */
692 int __ref acpi_map_lsapic(acpi_handle handle, int *pcpu)
693 {
694 return _acpi_map_lsapic(handle, pcpu);
695 }
696 EXPORT_SYMBOL(acpi_map_lsapic);
697
698 int acpi_unmap_lsapic(int cpu)
699 {
700 #ifdef CONFIG_ACPI_NUMA
701 set_apicid_to_node(per_cpu(x86_cpu_to_apicid, cpu), NUMA_NO_NODE);
702 #endif
703
704 per_cpu(x86_cpu_to_apicid, cpu) = -1;
705 set_cpu_present(cpu, false);
706 num_processors--;
707
708 return (0);
709 }
710
711 EXPORT_SYMBOL(acpi_unmap_lsapic);
712 #endif /* CONFIG_ACPI_HOTPLUG_CPU */
713
714 int acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base)
715 {
716 /* TBD */
717 return -EINVAL;
718 }
719
720 EXPORT_SYMBOL(acpi_register_ioapic);
721
722 int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base)
723 {
724 /* TBD */
725 return -EINVAL;
726 }
727
728 EXPORT_SYMBOL(acpi_unregister_ioapic);
729
730 static int __init acpi_parse_sbf(struct acpi_table_header *table)
731 {
732 struct acpi_table_boot *sb;
733
734 sb = (struct acpi_table_boot *)table;
735 if (!sb) {
736 printk(KERN_WARNING PREFIX "Unable to map SBF\n");
737 return -ENODEV;
738 }
739
740 sbf_port = sb->cmos_index; /* Save CMOS port */
741
742 return 0;
743 }
744
745 #ifdef CONFIG_HPET_TIMER
746 #include <asm/hpet.h>
747
748 static struct __initdata resource *hpet_res;
749
750 static int __init acpi_parse_hpet(struct acpi_table_header *table)
751 {
752 struct acpi_table_hpet *hpet_tbl;
753
754 hpet_tbl = (struct acpi_table_hpet *)table;
755 if (!hpet_tbl) {
756 printk(KERN_WARNING PREFIX "Unable to map HPET\n");
757 return -ENODEV;
758 }
759
760 if (hpet_tbl->address.space_id != ACPI_SPACE_MEM) {
761 printk(KERN_WARNING PREFIX "HPET timers must be located in "
762 "memory.\n");
763 return -1;
764 }
765
766 hpet_address = hpet_tbl->address.address;
767 hpet_blockid = hpet_tbl->sequence;
768
769 /*
770 * Some broken BIOSes advertise HPET at 0x0. We really do not
771 * want to allocate a resource there.
772 */
773 if (!hpet_address) {
774 printk(KERN_WARNING PREFIX
775 "HPET id: %#x base: %#lx is invalid\n",
776 hpet_tbl->id, hpet_address);
777 return 0;
778 }
779 #ifdef CONFIG_X86_64
780 /*
781 * Some even more broken BIOSes advertise HPET at
782 * 0xfed0000000000000 instead of 0xfed00000. Fix it up and add
783 * some noise:
784 */
785 if (hpet_address == 0xfed0000000000000UL) {
786 if (!hpet_force_user) {
787 printk(KERN_WARNING PREFIX "HPET id: %#x "
788 "base: 0xfed0000000000000 is bogus\n "
789 "try hpet=force on the kernel command line to "
790 "fix it up to 0xfed00000.\n", hpet_tbl->id);
791 hpet_address = 0;
792 return 0;
793 }
794 printk(KERN_WARNING PREFIX
795 "HPET id: %#x base: 0xfed0000000000000 fixed up "
796 "to 0xfed00000.\n", hpet_tbl->id);
797 hpet_address >>= 32;
798 }
799 #endif
800 printk(KERN_INFO PREFIX "HPET id: %#x base: %#lx\n",
801 hpet_tbl->id, hpet_address);
802
803 /*
804 * Allocate and initialize the HPET firmware resource for adding into
805 * the resource tree during the lateinit timeframe.
806 */
807 #define HPET_RESOURCE_NAME_SIZE 9
808 hpet_res = alloc_bootmem(sizeof(*hpet_res) + HPET_RESOURCE_NAME_SIZE);
809
810 hpet_res->name = (void *)&hpet_res[1];
811 hpet_res->flags = IORESOURCE_MEM;
812 snprintf((char *)hpet_res->name, HPET_RESOURCE_NAME_SIZE, "HPET %u",
813 hpet_tbl->sequence);
814
815 hpet_res->start = hpet_address;
816 hpet_res->end = hpet_address + (1 * 1024) - 1;
817
818 return 0;
819 }
820
821 /*
822 * hpet_insert_resource inserts the HPET resources used into the resource
823 * tree.
824 */
825 static __init int hpet_insert_resource(void)
826 {
827 if (!hpet_res)
828 return 1;
829
830 return insert_resource(&iomem_resource, hpet_res);
831 }
832
833 late_initcall(hpet_insert_resource);
834
835 #else
836 #define acpi_parse_hpet NULL
837 #endif
838
839 static int __init acpi_parse_fadt(struct acpi_table_header *table)
840 {
841
842 #ifdef CONFIG_X86_PM_TIMER
843 /* detect the location of the ACPI PM Timer */
844 if (acpi_gbl_FADT.header.revision >= FADT2_REVISION_ID) {
845 /* FADT rev. 2 */
846 if (acpi_gbl_FADT.xpm_timer_block.space_id !=
847 ACPI_ADR_SPACE_SYSTEM_IO)
848 return 0;
849
850 pmtmr_ioport = acpi_gbl_FADT.xpm_timer_block.address;
851 /*
852 * "X" fields are optional extensions to the original V1.0
853 * fields, so we must selectively expand V1.0 fields if the
854 * corresponding X field is zero.
855 */
856 if (!pmtmr_ioport)
857 pmtmr_ioport = acpi_gbl_FADT.pm_timer_block;
858 } else {
859 /* FADT rev. 1 */
860 pmtmr_ioport = acpi_gbl_FADT.pm_timer_block;
861 }
862 if (pmtmr_ioport)
863 printk(KERN_INFO PREFIX "PM-Timer IO Port: %#x\n",
864 pmtmr_ioport);
865 #endif
866 return 0;
867 }
868
869 #ifdef CONFIG_X86_LOCAL_APIC
870 /*
871 * Parse LAPIC entries in MADT
872 * returns 0 on success, < 0 on error
873 */
874
875 static int __init early_acpi_parse_madt_lapic_addr_ovr(void)
876 {
877 int count;
878
879 if (!cpu_has_apic)
880 return -ENODEV;
881
882 /*
883 * Note that the LAPIC address is obtained from the MADT (32-bit value)
884 * and (optionally) overriden by a LAPIC_ADDR_OVR entry (64-bit value).
885 */
886
887 count =
888 acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE,
889 acpi_parse_lapic_addr_ovr, 0);
890 if (count < 0) {
891 printk(KERN_ERR PREFIX
892 "Error parsing LAPIC address override entry\n");
893 return count;
894 }
895
896 register_lapic_address(acpi_lapic_addr);
897
898 return count;
899 }
900
901 static int __init acpi_parse_madt_lapic_entries(void)
902 {
903 int count;
904 int x2count = 0;
905
906 if (!cpu_has_apic)
907 return -ENODEV;
908
909 /*
910 * Note that the LAPIC address is obtained from the MADT (32-bit value)
911 * and (optionally) overriden by a LAPIC_ADDR_OVR entry (64-bit value).
912 */
913
914 count =
915 acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE,
916 acpi_parse_lapic_addr_ovr, 0);
917 if (count < 0) {
918 printk(KERN_ERR PREFIX
919 "Error parsing LAPIC address override entry\n");
920 return count;
921 }
922
923 register_lapic_address(acpi_lapic_addr);
924
925 count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_SAPIC,
926 acpi_parse_sapic, MAX_LOCAL_APIC);
927
928 if (!count) {
929 x2count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_X2APIC,
930 acpi_parse_x2apic, MAX_LOCAL_APIC);
931 count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC,
932 acpi_parse_lapic, MAX_LOCAL_APIC);
933 }
934 if (!count && !x2count) {
935 printk(KERN_ERR PREFIX "No LAPIC entries present\n");
936 /* TBD: Cleanup to allow fallback to MPS */
937 return -ENODEV;
938 } else if (count < 0 || x2count < 0) {
939 printk(KERN_ERR PREFIX "Error parsing LAPIC entry\n");
940 /* TBD: Cleanup to allow fallback to MPS */
941 return count;
942 }
943
944 x2count =
945 acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_X2APIC_NMI,
946 acpi_parse_x2apic_nmi, 0);
947 count =
948 acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_NMI, acpi_parse_lapic_nmi, 0);
949 if (count < 0 || x2count < 0) {
950 printk(KERN_ERR PREFIX "Error parsing LAPIC NMI entry\n");
951 /* TBD: Cleanup to allow fallback to MPS */
952 return count;
953 }
954 return 0;
955 }
956 #endif /* CONFIG_X86_LOCAL_APIC */
957
958 #ifdef CONFIG_X86_IO_APIC
959 #define MP_ISA_BUS 0
960
961 #ifdef CONFIG_X86_ES7000
962 extern int es7000_plat;
963 #endif
964
965 void __init mp_override_legacy_irq(u8 bus_irq, u8 polarity, u8 trigger, u32 gsi)
966 {
967 int ioapic;
968 int pin;
969 struct mpc_intsrc mp_irq;
970
971 /*
972 * Convert 'gsi' to 'ioapic.pin'.
973 */
974 ioapic = mp_find_ioapic(gsi);
975 if (ioapic < 0)
976 return;
977 pin = mp_find_ioapic_pin(ioapic, gsi);
978
979 /*
980 * TBD: This check is for faulty timer entries, where the override
981 * erroneously sets the trigger to level, resulting in a HUGE
982 * increase of timer interrupts!
983 */
984 if ((bus_irq == 0) && (trigger == 3))
985 trigger = 1;
986
987 mp_irq.type = MP_INTSRC;
988 mp_irq.irqtype = mp_INT;
989 mp_irq.irqflag = (trigger << 2) | polarity;
990 mp_irq.srcbus = MP_ISA_BUS;
991 mp_irq.srcbusirq = bus_irq; /* IRQ */
992 mp_irq.dstapic = mpc_ioapic_id(ioapic); /* APIC ID */
993 mp_irq.dstirq = pin; /* INTIN# */
994
995 mp_save_irq(&mp_irq);
996
997 isa_irq_to_gsi[bus_irq] = gsi;
998 }
999
1000 void __init mp_config_acpi_legacy_irqs(void)
1001 {
1002 int i;
1003 struct mpc_intsrc mp_irq;
1004
1005 #ifdef CONFIG_EISA
1006 /*
1007 * Fabricate the legacy ISA bus (bus #31).
1008 */
1009 mp_bus_id_to_type[MP_ISA_BUS] = MP_BUS_ISA;
1010 #endif
1011 set_bit(MP_ISA_BUS, mp_bus_not_pci);
1012 pr_debug("Bus #%d is ISA\n", MP_ISA_BUS);
1013
1014 #ifdef CONFIG_X86_ES7000
1015 /*
1016 * Older generations of ES7000 have no legacy identity mappings
1017 */
1018 if (es7000_plat == 1)
1019 return;
1020 #endif
1021
1022 /*
1023 * Use the default configuration for the IRQs 0-15. Unless
1024 * overridden by (MADT) interrupt source override entries.
1025 */
1026 for (i = 0; i < 16; i++) {
1027 int ioapic, pin;
1028 unsigned int dstapic;
1029 int idx;
1030 u32 gsi;
1031
1032 /* Locate the gsi that irq i maps to. */
1033 if (acpi_isa_irq_to_gsi(i, &gsi))
1034 continue;
1035
1036 /*
1037 * Locate the IOAPIC that manages the ISA IRQ.
1038 */
1039 ioapic = mp_find_ioapic(gsi);
1040 if (ioapic < 0)
1041 continue;
1042 pin = mp_find_ioapic_pin(ioapic, gsi);
1043 dstapic = mpc_ioapic_id(ioapic);
1044
1045 for (idx = 0; idx < mp_irq_entries; idx++) {
1046 struct mpc_intsrc *irq = mp_irqs + idx;
1047
1048 /* Do we already have a mapping for this ISA IRQ? */
1049 if (irq->srcbus == MP_ISA_BUS && irq->srcbusirq == i)
1050 break;
1051
1052 /* Do we already have a mapping for this IOAPIC pin */
1053 if (irq->dstapic == dstapic && irq->dstirq == pin)
1054 break;
1055 }
1056
1057 if (idx != mp_irq_entries) {
1058 printk(KERN_DEBUG "ACPI: IRQ%d used by override.\n", i);
1059 continue; /* IRQ already used */
1060 }
1061
1062 mp_irq.type = MP_INTSRC;
1063 mp_irq.irqflag = 0; /* Conforming */
1064 mp_irq.srcbus = MP_ISA_BUS;
1065 mp_irq.dstapic = dstapic;
1066 mp_irq.irqtype = mp_INT;
1067 mp_irq.srcbusirq = i; /* Identity mapped */
1068 mp_irq.dstirq = pin;
1069
1070 mp_save_irq(&mp_irq);
1071 }
1072 }
1073
1074 static int mp_config_acpi_gsi(struct device *dev, u32 gsi, int trigger,
1075 int polarity)
1076 {
1077 #ifdef CONFIG_X86_MPPARSE
1078 struct mpc_intsrc mp_irq;
1079 struct pci_dev *pdev;
1080 unsigned char number;
1081 unsigned int devfn;
1082 int ioapic;
1083 u8 pin;
1084
1085 if (!acpi_ioapic)
1086 return 0;
1087 if (!dev)
1088 return 0;
1089 if (dev->bus != &pci_bus_type)
1090 return 0;
1091
1092 pdev = to_pci_dev(dev);
1093 number = pdev->bus->number;
1094 devfn = pdev->devfn;
1095 pin = pdev->pin;
1096 /* print the entry should happen on mptable identically */
1097 mp_irq.type = MP_INTSRC;
1098 mp_irq.irqtype = mp_INT;
1099 mp_irq.irqflag = (trigger == ACPI_EDGE_SENSITIVE ? 4 : 0x0c) |
1100 (polarity == ACPI_ACTIVE_HIGH ? 1 : 3);
1101 mp_irq.srcbus = number;
1102 mp_irq.srcbusirq = (((devfn >> 3) & 0x1f) << 2) | ((pin - 1) & 3);
1103 ioapic = mp_find_ioapic(gsi);
1104 mp_irq.dstapic = mpc_ioapic_id(ioapic);
1105 mp_irq.dstirq = mp_find_ioapic_pin(ioapic, gsi);
1106
1107 mp_save_irq(&mp_irq);
1108 #endif
1109 return 0;
1110 }
1111
1112 int mp_register_gsi(struct device *dev, u32 gsi, int trigger, int polarity)
1113 {
1114 int ioapic;
1115 int ioapic_pin;
1116 struct io_apic_irq_attr irq_attr;
1117 int ret;
1118
1119 if (acpi_irq_model != ACPI_IRQ_MODEL_IOAPIC)
1120 return gsi;
1121
1122 /* Don't set up the ACPI SCI because it's already set up */
1123 if (acpi_gbl_FADT.sci_interrupt == gsi)
1124 return gsi;
1125
1126 ioapic = mp_find_ioapic(gsi);
1127 if (ioapic < 0) {
1128 printk(KERN_WARNING "No IOAPIC for GSI %u\n", gsi);
1129 return gsi;
1130 }
1131
1132 ioapic_pin = mp_find_ioapic_pin(ioapic, gsi);
1133
1134 if (ioapic_pin > MP_MAX_IOAPIC_PIN) {
1135 printk(KERN_ERR "Invalid reference to IOAPIC pin "
1136 "%d-%d\n", mpc_ioapic_id(ioapic),
1137 ioapic_pin);
1138 return gsi;
1139 }
1140
1141 if (enable_update_mptable)
1142 mp_config_acpi_gsi(dev, gsi, trigger, polarity);
1143
1144 set_io_apic_irq_attr(&irq_attr, ioapic, ioapic_pin,
1145 trigger == ACPI_EDGE_SENSITIVE ? 0 : 1,
1146 polarity == ACPI_ACTIVE_HIGH ? 0 : 1);
1147 ret = io_apic_set_pci_routing(dev, gsi_to_irq(gsi), &irq_attr);
1148 if (ret < 0)
1149 gsi = INT_MIN;
1150
1151 return gsi;
1152 }
1153
1154 /*
1155 * Parse IOAPIC related entries in MADT
1156 * returns 0 on success, < 0 on error
1157 */
1158 static int __init acpi_parse_madt_ioapic_entries(void)
1159 {
1160 int count;
1161
1162 /*
1163 * ACPI interpreter is required to complete interrupt setup,
1164 * so if it is off, don't enumerate the io-apics with ACPI.
1165 * If MPS is present, it will handle them,
1166 * otherwise the system will stay in PIC mode
1167 */
1168 if (acpi_disabled || acpi_noirq)
1169 return -ENODEV;
1170
1171 if (!cpu_has_apic)
1172 return -ENODEV;
1173
1174 /*
1175 * if "noapic" boot option, don't look for IO-APICs
1176 */
1177 if (skip_ioapic_setup) {
1178 printk(KERN_INFO PREFIX "Skipping IOAPIC probe "
1179 "due to 'noapic' option.\n");
1180 return -ENODEV;
1181 }
1182
1183 count =
1184 acpi_table_parse_madt(ACPI_MADT_TYPE_IO_APIC, acpi_parse_ioapic,
1185 MAX_IO_APICS);
1186 if (!count) {
1187 printk(KERN_ERR PREFIX "No IOAPIC entries present\n");
1188 return -ENODEV;
1189 } else if (count < 0) {
1190 printk(KERN_ERR PREFIX "Error parsing IOAPIC entry\n");
1191 return count;
1192 }
1193
1194 count =
1195 acpi_table_parse_madt(ACPI_MADT_TYPE_INTERRUPT_OVERRIDE, acpi_parse_int_src_ovr,
1196 nr_irqs);
1197 if (count < 0) {
1198 printk(KERN_ERR PREFIX
1199 "Error parsing interrupt source overrides entry\n");
1200 /* TBD: Cleanup to allow fallback to MPS */
1201 return count;
1202 }
1203
1204 /*
1205 * If BIOS did not supply an INT_SRC_OVR for the SCI
1206 * pretend we got one so we can set the SCI flags.
1207 */
1208 if (!acpi_sci_override_gsi)
1209 acpi_sci_ioapic_setup(acpi_gbl_FADT.sci_interrupt, 0, 0,
1210 acpi_gbl_FADT.sci_interrupt);
1211
1212 /* Fill in identity legacy mappings where no override */
1213 mp_config_acpi_legacy_irqs();
1214
1215 count =
1216 acpi_table_parse_madt(ACPI_MADT_TYPE_NMI_SOURCE, acpi_parse_nmi_src,
1217 nr_irqs);
1218 if (count < 0) {
1219 printk(KERN_ERR PREFIX "Error parsing NMI SRC entry\n");
1220 /* TBD: Cleanup to allow fallback to MPS */
1221 return count;
1222 }
1223
1224 return 0;
1225 }
1226 #else
1227 static inline int acpi_parse_madt_ioapic_entries(void)
1228 {
1229 return -1;
1230 }
1231 #endif /* !CONFIG_X86_IO_APIC */
1232
1233 static void __init early_acpi_process_madt(void)
1234 {
1235 #ifdef CONFIG_X86_LOCAL_APIC
1236 int error;
1237
1238 if (!acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) {
1239
1240 /*
1241 * Parse MADT LAPIC entries
1242 */
1243 error = early_acpi_parse_madt_lapic_addr_ovr();
1244 if (!error) {
1245 acpi_lapic = 1;
1246 smp_found_config = 1;
1247 }
1248 if (error == -EINVAL) {
1249 /*
1250 * Dell Precision Workstation 410, 610 come here.
1251 */
1252 printk(KERN_ERR PREFIX
1253 "Invalid BIOS MADT, disabling ACPI\n");
1254 disable_acpi();
1255 }
1256 }
1257 #endif
1258 }
1259
1260 static void __init acpi_process_madt(void)
1261 {
1262 #ifdef CONFIG_X86_LOCAL_APIC
1263 int error;
1264
1265 if (!acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) {
1266
1267 /*
1268 * Parse MADT LAPIC entries
1269 */
1270 error = acpi_parse_madt_lapic_entries();
1271 if (!error) {
1272 acpi_lapic = 1;
1273
1274 /*
1275 * Parse MADT IO-APIC entries
1276 */
1277 error = acpi_parse_madt_ioapic_entries();
1278 if (!error) {
1279 acpi_set_irq_model_ioapic();
1280
1281 smp_found_config = 1;
1282 }
1283 }
1284 if (error == -EINVAL) {
1285 /*
1286 * Dell Precision Workstation 410, 610 come here.
1287 */
1288 printk(KERN_ERR PREFIX
1289 "Invalid BIOS MADT, disabling ACPI\n");
1290 disable_acpi();
1291 }
1292 } else {
1293 /*
1294 * ACPI found no MADT, and so ACPI wants UP PIC mode.
1295 * In the event an MPS table was found, forget it.
1296 * Boot with "acpi=off" to use MPS on such a system.
1297 */
1298 if (smp_found_config) {
1299 printk(KERN_WARNING PREFIX
1300 "No APIC-table, disabling MPS\n");
1301 smp_found_config = 0;
1302 }
1303 }
1304
1305 /*
1306 * ACPI supports both logical (e.g. Hyper-Threading) and physical
1307 * processors, where MPS only supports physical.
1308 */
1309 if (acpi_lapic && acpi_ioapic)
1310 printk(KERN_INFO "Using ACPI (MADT) for SMP configuration "
1311 "information\n");
1312 else if (acpi_lapic)
1313 printk(KERN_INFO "Using ACPI for processor (LAPIC) "
1314 "configuration information\n");
1315 #endif
1316 return;
1317 }
1318
1319 static int __init disable_acpi_irq(const struct dmi_system_id *d)
1320 {
1321 if (!acpi_force) {
1322 printk(KERN_NOTICE "%s detected: force use of acpi=noirq\n",
1323 d->ident);
1324 acpi_noirq_set();
1325 }
1326 return 0;
1327 }
1328
1329 static int __init disable_acpi_pci(const struct dmi_system_id *d)
1330 {
1331 if (!acpi_force) {
1332 printk(KERN_NOTICE "%s detected: force use of pci=noacpi\n",
1333 d->ident);
1334 acpi_disable_pci();
1335 }
1336 return 0;
1337 }
1338
1339 static int __init dmi_disable_acpi(const struct dmi_system_id *d)
1340 {
1341 if (!acpi_force) {
1342 printk(KERN_NOTICE "%s detected: acpi off\n", d->ident);
1343 disable_acpi();
1344 } else {
1345 printk(KERN_NOTICE
1346 "Warning: DMI blacklist says broken, but acpi forced\n");
1347 }
1348 return 0;
1349 }
1350
1351 /*
1352 * Force ignoring BIOS IRQ0 override
1353 */
1354 static int __init dmi_ignore_irq0_timer_override(const struct dmi_system_id *d)
1355 {
1356 if (!acpi_skip_timer_override) {
1357 pr_notice("%s detected: Ignoring BIOS IRQ0 override\n",
1358 d->ident);
1359 acpi_skip_timer_override = 1;
1360 }
1361 return 0;
1362 }
1363
1364 /*
1365 * If your system is blacklisted here, but you find that acpi=force
1366 * works for you, please contact linux-acpi@vger.kernel.org
1367 */
1368 static struct dmi_system_id __initdata acpi_dmi_table[] = {
1369 /*
1370 * Boxes that need ACPI disabled
1371 */
1372 {
1373 .callback = dmi_disable_acpi,
1374 .ident = "IBM Thinkpad",
1375 .matches = {
1376 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
1377 DMI_MATCH(DMI_BOARD_NAME, "2629H1G"),
1378 },
1379 },
1380
1381 /*
1382 * Boxes that need ACPI PCI IRQ routing disabled
1383 */
1384 {
1385 .callback = disable_acpi_irq,
1386 .ident = "ASUS A7V",
1387 .matches = {
1388 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC"),
1389 DMI_MATCH(DMI_BOARD_NAME, "<A7V>"),
1390 /* newer BIOS, Revision 1011, does work */
1391 DMI_MATCH(DMI_BIOS_VERSION,
1392 "ASUS A7V ACPI BIOS Revision 1007"),
1393 },
1394 },
1395 {
1396 /*
1397 * Latest BIOS for IBM 600E (1.16) has bad pcinum
1398 * for LPC bridge, which is needed for the PCI
1399 * interrupt links to work. DSDT fix is in bug 5966.
1400 * 2645, 2646 model numbers are shared with 600/600E/600X
1401 */
1402 .callback = disable_acpi_irq,
1403 .ident = "IBM Thinkpad 600 Series 2645",
1404 .matches = {
1405 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
1406 DMI_MATCH(DMI_BOARD_NAME, "2645"),
1407 },
1408 },
1409 {
1410 .callback = disable_acpi_irq,
1411 .ident = "IBM Thinkpad 600 Series 2646",
1412 .matches = {
1413 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
1414 DMI_MATCH(DMI_BOARD_NAME, "2646"),
1415 },
1416 },
1417 /*
1418 * Boxes that need ACPI PCI IRQ routing and PCI scan disabled
1419 */
1420 { /* _BBN 0 bug */
1421 .callback = disable_acpi_pci,
1422 .ident = "ASUS PR-DLS",
1423 .matches = {
1424 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."),
1425 DMI_MATCH(DMI_BOARD_NAME, "PR-DLS"),
1426 DMI_MATCH(DMI_BIOS_VERSION,
1427 "ASUS PR-DLS ACPI BIOS Revision 1010"),
1428 DMI_MATCH(DMI_BIOS_DATE, "03/21/2003")
1429 },
1430 },
1431 {
1432 .callback = disable_acpi_pci,
1433 .ident = "Acer TravelMate 36x Laptop",
1434 .matches = {
1435 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
1436 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 360"),
1437 },
1438 },
1439 {}
1440 };
1441
1442 /* second table for DMI checks that should run after early-quirks */
1443 static struct dmi_system_id __initdata acpi_dmi_table_late[] = {
1444 /*
1445 * HP laptops which use a DSDT reporting as HP/SB400/10000,
1446 * which includes some code which overrides all temperature
1447 * trip points to 16C if the INTIN2 input of the I/O APIC
1448 * is enabled. This input is incorrectly designated the
1449 * ISA IRQ 0 via an interrupt source override even though
1450 * it is wired to the output of the master 8259A and INTIN0
1451 * is not connected at all. Force ignoring BIOS IRQ0
1452 * override in that cases.
1453 */
1454 {
1455 .callback = dmi_ignore_irq0_timer_override,
1456 .ident = "HP nx6115 laptop",
1457 .matches = {
1458 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1459 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6115"),
1460 },
1461 },
1462 {
1463 .callback = dmi_ignore_irq0_timer_override,
1464 .ident = "HP NX6125 laptop",
1465 .matches = {
1466 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1467 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6125"),
1468 },
1469 },
1470 {
1471 .callback = dmi_ignore_irq0_timer_override,
1472 .ident = "HP NX6325 laptop",
1473 .matches = {
1474 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1475 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6325"),
1476 },
1477 },
1478 {
1479 .callback = dmi_ignore_irq0_timer_override,
1480 .ident = "HP 6715b laptop",
1481 .matches = {
1482 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1483 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq 6715b"),
1484 },
1485 },
1486 {
1487 .callback = dmi_ignore_irq0_timer_override,
1488 .ident = "FUJITSU SIEMENS",
1489 .matches = {
1490 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
1491 DMI_MATCH(DMI_PRODUCT_NAME, "AMILO PRO V2030"),
1492 },
1493 },
1494 {}
1495 };
1496
1497 /*
1498 * acpi_boot_table_init() and acpi_boot_init()
1499 * called from setup_arch(), always.
1500 * 1. checksums all tables
1501 * 2. enumerates lapics
1502 * 3. enumerates io-apics
1503 *
1504 * acpi_table_init() is separate to allow reading SRAT without
1505 * other side effects.
1506 *
1507 * side effects of acpi_boot_init:
1508 * acpi_lapic = 1 if LAPIC found
1509 * acpi_ioapic = 1 if IOAPIC found
1510 * if (acpi_lapic && acpi_ioapic) smp_found_config = 1;
1511 * if acpi_blacklisted() acpi_disabled = 1;
1512 * acpi_irq_model=...
1513 * ...
1514 */
1515
1516 void __init acpi_boot_table_init(void)
1517 {
1518 dmi_check_system(acpi_dmi_table);
1519
1520 /*
1521 * If acpi_disabled, bail out
1522 */
1523 if (acpi_disabled)
1524 return;
1525
1526 /*
1527 * Initialize the ACPI boot-time table parser.
1528 */
1529 if (acpi_table_init()) {
1530 disable_acpi();
1531 return;
1532 }
1533
1534 acpi_table_parse(ACPI_SIG_BOOT, acpi_parse_sbf);
1535
1536 /*
1537 * blacklist may disable ACPI entirely
1538 */
1539 if (acpi_blacklisted()) {
1540 if (acpi_force) {
1541 printk(KERN_WARNING PREFIX "acpi=force override\n");
1542 } else {
1543 printk(KERN_WARNING PREFIX "Disabling ACPI support\n");
1544 disable_acpi();
1545 return;
1546 }
1547 }
1548 }
1549
1550 int __init early_acpi_boot_init(void)
1551 {
1552 /*
1553 * If acpi_disabled, bail out
1554 */
1555 if (acpi_disabled)
1556 return 1;
1557
1558 /*
1559 * Process the Multiple APIC Description Table (MADT), if present
1560 */
1561 early_acpi_process_madt();
1562
1563 return 0;
1564 }
1565
1566 int __init acpi_boot_init(void)
1567 {
1568 /* those are executed after early-quirks are executed */
1569 dmi_check_system(acpi_dmi_table_late);
1570
1571 /*
1572 * If acpi_disabled, bail out
1573 */
1574 if (acpi_disabled)
1575 return 1;
1576
1577 acpi_table_parse(ACPI_SIG_BOOT, acpi_parse_sbf);
1578
1579 /*
1580 * set sci_int and PM timer address
1581 */
1582 acpi_table_parse(ACPI_SIG_FADT, acpi_parse_fadt);
1583
1584 /*
1585 * Process the Multiple APIC Description Table (MADT), if present
1586 */
1587 acpi_process_madt();
1588
1589 acpi_table_parse(ACPI_SIG_HPET, acpi_parse_hpet);
1590
1591 if (!acpi_noirq)
1592 x86_init.pci.init = pci_acpi_init;
1593
1594 return 0;
1595 }
1596
1597 static int __init parse_acpi(char *arg)
1598 {
1599 if (!arg)
1600 return -EINVAL;
1601
1602 /* "acpi=off" disables both ACPI table parsing and interpreter */
1603 if (strcmp(arg, "off") == 0) {
1604 disable_acpi();
1605 }
1606 /* acpi=force to over-ride black-list */
1607 else if (strcmp(arg, "force") == 0) {
1608 acpi_force = 1;
1609 acpi_disabled = 0;
1610 }
1611 /* acpi=strict disables out-of-spec workarounds */
1612 else if (strcmp(arg, "strict") == 0) {
1613 acpi_strict = 1;
1614 }
1615 /* acpi=rsdt use RSDT instead of XSDT */
1616 else if (strcmp(arg, "rsdt") == 0) {
1617 acpi_rsdt_forced = 1;
1618 }
1619 /* "acpi=noirq" disables ACPI interrupt routing */
1620 else if (strcmp(arg, "noirq") == 0) {
1621 acpi_noirq_set();
1622 }
1623 /* "acpi=copy_dsdt" copys DSDT */
1624 else if (strcmp(arg, "copy_dsdt") == 0) {
1625 acpi_gbl_copy_dsdt_locally = 1;
1626 }
1627 /* "acpi=nocmcff" disables FF mode for corrected errors */
1628 else if (strcmp(arg, "nocmcff") == 0) {
1629 acpi_disable_cmcff = 1;
1630 } else {
1631 /* Core will printk when we return error. */
1632 return -EINVAL;
1633 }
1634 return 0;
1635 }
1636 early_param("acpi", parse_acpi);
1637
1638 /* FIXME: Using pci= for an ACPI parameter is a travesty. */
1639 static int __init parse_pci(char *arg)
1640 {
1641 if (arg && strcmp(arg, "noacpi") == 0)
1642 acpi_disable_pci();
1643 return 0;
1644 }
1645 early_param("pci", parse_pci);
1646
1647 int __init acpi_mps_check(void)
1648 {
1649 #if defined(CONFIG_X86_LOCAL_APIC) && !defined(CONFIG_X86_MPPARSE)
1650 /* mptable code is not built-in*/
1651 if (acpi_disabled || acpi_noirq) {
1652 printk(KERN_WARNING "MPS support code is not built-in.\n"
1653 "Using acpi=off or acpi=noirq or pci=noacpi "
1654 "may have problem\n");
1655 return 1;
1656 }
1657 #endif
1658 return 0;
1659 }
1660
1661 #ifdef CONFIG_X86_IO_APIC
1662 static int __init parse_acpi_skip_timer_override(char *arg)
1663 {
1664 acpi_skip_timer_override = 1;
1665 return 0;
1666 }
1667 early_param("acpi_skip_timer_override", parse_acpi_skip_timer_override);
1668
1669 static int __init parse_acpi_use_timer_override(char *arg)
1670 {
1671 acpi_use_timer_override = 1;
1672 return 0;
1673 }
1674 early_param("acpi_use_timer_override", parse_acpi_use_timer_override);
1675 #endif /* CONFIG_X86_IO_APIC */
1676
1677 static int __init setup_acpi_sci(char *s)
1678 {
1679 if (!s)
1680 return -EINVAL;
1681 if (!strcmp(s, "edge"))
1682 acpi_sci_flags = ACPI_MADT_TRIGGER_EDGE |
1683 (acpi_sci_flags & ~ACPI_MADT_TRIGGER_MASK);
1684 else if (!strcmp(s, "level"))
1685 acpi_sci_flags = ACPI_MADT_TRIGGER_LEVEL |
1686 (acpi_sci_flags & ~ACPI_MADT_TRIGGER_MASK);
1687 else if (!strcmp(s, "high"))
1688 acpi_sci_flags = ACPI_MADT_POLARITY_ACTIVE_HIGH |
1689 (acpi_sci_flags & ~ACPI_MADT_POLARITY_MASK);
1690 else if (!strcmp(s, "low"))
1691 acpi_sci_flags = ACPI_MADT_POLARITY_ACTIVE_LOW |
1692 (acpi_sci_flags & ~ACPI_MADT_POLARITY_MASK);
1693 else
1694 return -EINVAL;
1695 return 0;
1696 }
1697 early_param("acpi_sci", setup_acpi_sci);
1698
1699 int __acpi_acquire_global_lock(unsigned int *lock)
1700 {
1701 unsigned int old, new, val;
1702 do {
1703 old = *lock;
1704 new = (((old & ~0x3) + 2) + ((old >> 1) & 0x1));
1705 val = cmpxchg(lock, old, new);
1706 } while (unlikely (val != old));
1707 return (new < 3) ? -1 : 0;
1708 }
1709
1710 int __acpi_release_global_lock(unsigned int *lock)
1711 {
1712 unsigned int old, new, val;
1713 do {
1714 old = *lock;
1715 new = old & ~0x3;
1716 val = cmpxchg(lock, old, new);
1717 } while (unlikely (val != old));
1718 return old & 0x1;
1719 }
1720
1721 void __init arch_reserve_mem_area(acpi_physical_address addr, size_t size)
1722 {
1723 e820_add_region(addr, size, E820_ACPI);
1724 update_e820();
1725 }
Linux with added FPC-III support