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[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/export.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/irqdomain.h>
40 #include <asm/pci_x86.h>
41 #include <asm/pgtable.h>
42 #include <asm/io_apic.h>
43 #include <asm/apic.h>
44 #include <asm/io.h>
45 #include <asm/mpspec.h>
46 #include <asm/smp.h>
47 #include <asm/i8259.h>
48
49 #include "sleep.h" /* To include x86_acpi_suspend_lowlevel */
50 static int __initdata acpi_force = 0;
51 int acpi_disabled;
52 EXPORT_SYMBOL(acpi_disabled);
53
54 #ifdef CONFIG_X86_64
55 # include <asm/proto.h>
56 #endif /* X86 */
57
58 #define PREFIX "ACPI: "
59
60 int acpi_noirq; /* skip ACPI IRQ initialization */
61 int acpi_pci_disabled; /* skip ACPI PCI scan and IRQ initialization */
62 EXPORT_SYMBOL(acpi_pci_disabled);
63
64 int acpi_lapic;
65 int acpi_ioapic;
66 int acpi_strict;
67 int acpi_disable_cmcff;
68
69 u8 acpi_sci_flags __initdata;
70 int acpi_sci_override_gsi __initdata;
71 int acpi_skip_timer_override __initdata;
72 int acpi_use_timer_override __initdata;
73 int acpi_fix_pin2_polarity __initdata;
74
75 #ifdef CONFIG_X86_LOCAL_APIC
76 static u64 acpi_lapic_addr __initdata = APIC_DEFAULT_PHYS_BASE;
77 #endif
78
79 /*
80 * Locks related to IOAPIC hotplug
81 * Hotplug side:
82 * ->device_hotplug_lock
83 * ->acpi_ioapic_lock
84 * ->ioapic_lock
85 * Interrupt mapping side:
86 * ->acpi_ioapic_lock
87 * ->ioapic_mutex
88 * ->ioapic_lock
89 */
90 static DEFINE_MUTEX(acpi_ioapic_lock);
91
92 /* --------------------------------------------------------------------------
93 Boot-time Configuration
94 -------------------------------------------------------------------------- */
95
96 /*
97 * The default interrupt routing model is PIC (8259). This gets
98 * overridden if IOAPICs are enumerated (below).
99 */
100 enum acpi_irq_model_id acpi_irq_model = ACPI_IRQ_MODEL_PIC;
101
102
103 /*
104 * ISA irqs by default are the first 16 gsis but can be
105 * any gsi as specified by an interrupt source override.
106 */
107 static u32 isa_irq_to_gsi[NR_IRQS_LEGACY] __read_mostly = {
108 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15
109 };
110
111 #define ACPI_INVALID_GSI INT_MIN
112
113 /*
114 * This is just a simple wrapper around early_ioremap(),
115 * with sanity checks for phys == 0 and size == 0.
116 */
117 char *__init __acpi_map_table(unsigned long phys, unsigned long size)
118 {
119
120 if (!phys || !size)
121 return NULL;
122
123 return early_ioremap(phys, size);
124 }
125
126 void __init __acpi_unmap_table(char *map, unsigned long size)
127 {
128 if (!map || !size)
129 return;
130
131 early_iounmap(map, size);
132 }
133
134 #ifdef CONFIG_X86_LOCAL_APIC
135 static int __init acpi_parse_madt(struct acpi_table_header *table)
136 {
137 struct acpi_table_madt *madt = NULL;
138
139 if (!boot_cpu_has(X86_FEATURE_APIC))
140 return -EINVAL;
141
142 madt = (struct acpi_table_madt *)table;
143 if (!madt) {
144 printk(KERN_WARNING PREFIX "Unable to map MADT\n");
145 return -ENODEV;
146 }
147
148 if (madt->address) {
149 acpi_lapic_addr = (u64) madt->address;
150
151 printk(KERN_DEBUG PREFIX "Local APIC address 0x%08x\n",
152 madt->address);
153 }
154
155 default_acpi_madt_oem_check(madt->header.oem_id,
156 madt->header.oem_table_id);
157
158 return 0;
159 }
160
161 /**
162 * acpi_register_lapic - register a local apic and generates a logic cpu number
163 * @id: local apic id to register
164 * @acpiid: ACPI id to register
165 * @enabled: this cpu is enabled or not
166 *
167 * Returns the logic cpu number which maps to the local apic
168 */
169 static int acpi_register_lapic(int id, u32 acpiid, u8 enabled)
170 {
171 unsigned int ver = 0;
172 int cpu;
173
174 if (id >= MAX_LOCAL_APIC) {
175 printk(KERN_INFO PREFIX "skipped apicid that is too big\n");
176 return -EINVAL;
177 }
178
179 if (!enabled) {
180 ++disabled_cpus;
181 return -EINVAL;
182 }
183
184 if (boot_cpu_physical_apicid != -1U)
185 ver = apic_version[boot_cpu_physical_apicid];
186
187 cpu = generic_processor_info(id, ver);
188 if (cpu >= 0)
189 early_per_cpu(x86_cpu_to_acpiid, cpu) = acpiid;
190
191 return cpu;
192 }
193
194 static int __init
195 acpi_parse_x2apic(struct acpi_subtable_header *header, const unsigned long end)
196 {
197 struct acpi_madt_local_x2apic *processor = NULL;
198 int apic_id;
199 u8 enabled;
200
201 processor = (struct acpi_madt_local_x2apic *)header;
202
203 if (BAD_MADT_ENTRY(processor, end))
204 return -EINVAL;
205
206 acpi_table_print_madt_entry(header);
207
208 apic_id = processor->local_apic_id;
209 enabled = processor->lapic_flags & ACPI_MADT_ENABLED;
210 #ifdef CONFIG_X86_X2APIC
211 /*
212 * We need to register disabled CPU as well to permit
213 * counting disabled CPUs. This allows us to size
214 * cpus_possible_map more accurately, to permit
215 * to not preallocating memory for all NR_CPUS
216 * when we use CPU hotplug.
217 */
218 if (!apic->apic_id_valid(apic_id) && enabled)
219 printk(KERN_WARNING PREFIX "x2apic entry ignored\n");
220 else
221 acpi_register_lapic(apic_id, processor->uid, enabled);
222 #else
223 printk(KERN_WARNING PREFIX "x2apic entry ignored\n");
224 #endif
225
226 return 0;
227 }
228
229 static int __init
230 acpi_parse_lapic(struct acpi_subtable_header * header, const unsigned long end)
231 {
232 struct acpi_madt_local_apic *processor = NULL;
233
234 processor = (struct acpi_madt_local_apic *)header;
235
236 if (BAD_MADT_ENTRY(processor, end))
237 return -EINVAL;
238
239 acpi_table_print_madt_entry(header);
240
241 /*
242 * We need to register disabled CPU as well to permit
243 * counting disabled CPUs. This allows us to size
244 * cpus_possible_map more accurately, to permit
245 * to not preallocating memory for all NR_CPUS
246 * when we use CPU hotplug.
247 */
248 acpi_register_lapic(processor->id, /* APIC ID */
249 processor->processor_id, /* ACPI ID */
250 processor->lapic_flags & ACPI_MADT_ENABLED);
251
252 return 0;
253 }
254
255 static int __init
256 acpi_parse_sapic(struct acpi_subtable_header *header, const unsigned long end)
257 {
258 struct acpi_madt_local_sapic *processor = NULL;
259
260 processor = (struct acpi_madt_local_sapic *)header;
261
262 if (BAD_MADT_ENTRY(processor, end))
263 return -EINVAL;
264
265 acpi_table_print_madt_entry(header);
266
267 acpi_register_lapic((processor->id << 8) | processor->eid,/* APIC ID */
268 processor->processor_id, /* ACPI ID */
269 processor->lapic_flags & ACPI_MADT_ENABLED);
270
271 return 0;
272 }
273
274 static int __init
275 acpi_parse_lapic_addr_ovr(struct acpi_subtable_header * header,
276 const unsigned long end)
277 {
278 struct acpi_madt_local_apic_override *lapic_addr_ovr = NULL;
279
280 lapic_addr_ovr = (struct acpi_madt_local_apic_override *)header;
281
282 if (BAD_MADT_ENTRY(lapic_addr_ovr, end))
283 return -EINVAL;
284
285 acpi_table_print_madt_entry(header);
286
287 acpi_lapic_addr = lapic_addr_ovr->address;
288
289 return 0;
290 }
291
292 static int __init
293 acpi_parse_x2apic_nmi(struct acpi_subtable_header *header,
294 const unsigned long end)
295 {
296 struct acpi_madt_local_x2apic_nmi *x2apic_nmi = NULL;
297
298 x2apic_nmi = (struct acpi_madt_local_x2apic_nmi *)header;
299
300 if (BAD_MADT_ENTRY(x2apic_nmi, end))
301 return -EINVAL;
302
303 acpi_table_print_madt_entry(header);
304
305 if (x2apic_nmi->lint != 1)
306 printk(KERN_WARNING PREFIX "NMI not connected to LINT 1!\n");
307
308 return 0;
309 }
310
311 static int __init
312 acpi_parse_lapic_nmi(struct acpi_subtable_header * header, const unsigned long end)
313 {
314 struct acpi_madt_local_apic_nmi *lapic_nmi = NULL;
315
316 lapic_nmi = (struct acpi_madt_local_apic_nmi *)header;
317
318 if (BAD_MADT_ENTRY(lapic_nmi, end))
319 return -EINVAL;
320
321 acpi_table_print_madt_entry(header);
322
323 if (lapic_nmi->lint != 1)
324 printk(KERN_WARNING PREFIX "NMI not connected to LINT 1!\n");
325
326 return 0;
327 }
328
329 #endif /*CONFIG_X86_LOCAL_APIC */
330
331 #ifdef CONFIG_X86_IO_APIC
332 #define MP_ISA_BUS 0
333
334 static void __init mp_override_legacy_irq(u8 bus_irq, u8 polarity, u8 trigger,
335 u32 gsi)
336 {
337 int ioapic;
338 int pin;
339 struct mpc_intsrc mp_irq;
340
341 /*
342 * Convert 'gsi' to 'ioapic.pin'.
343 */
344 ioapic = mp_find_ioapic(gsi);
345 if (ioapic < 0)
346 return;
347 pin = mp_find_ioapic_pin(ioapic, gsi);
348
349 /*
350 * TBD: This check is for faulty timer entries, where the override
351 * erroneously sets the trigger to level, resulting in a HUGE
352 * increase of timer interrupts!
353 */
354 if ((bus_irq == 0) && (trigger == 3))
355 trigger = 1;
356
357 mp_irq.type = MP_INTSRC;
358 mp_irq.irqtype = mp_INT;
359 mp_irq.irqflag = (trigger << 2) | polarity;
360 mp_irq.srcbus = MP_ISA_BUS;
361 mp_irq.srcbusirq = bus_irq; /* IRQ */
362 mp_irq.dstapic = mpc_ioapic_id(ioapic); /* APIC ID */
363 mp_irq.dstirq = pin; /* INTIN# */
364
365 mp_save_irq(&mp_irq);
366
367 /*
368 * Reset default identity mapping if gsi is also an legacy IRQ,
369 * otherwise there will be more than one entry with the same GSI
370 * and acpi_isa_irq_to_gsi() may give wrong result.
371 */
372 if (gsi < nr_legacy_irqs() && isa_irq_to_gsi[gsi] == gsi)
373 isa_irq_to_gsi[gsi] = ACPI_INVALID_GSI;
374 isa_irq_to_gsi[bus_irq] = gsi;
375 }
376
377 static int mp_config_acpi_gsi(struct device *dev, u32 gsi, int trigger,
378 int polarity)
379 {
380 #ifdef CONFIG_X86_MPPARSE
381 struct mpc_intsrc mp_irq;
382 struct pci_dev *pdev;
383 unsigned char number;
384 unsigned int devfn;
385 int ioapic;
386 u8 pin;
387
388 if (!acpi_ioapic)
389 return 0;
390 if (!dev || !dev_is_pci(dev))
391 return 0;
392
393 pdev = to_pci_dev(dev);
394 number = pdev->bus->number;
395 devfn = pdev->devfn;
396 pin = pdev->pin;
397 /* print the entry should happen on mptable identically */
398 mp_irq.type = MP_INTSRC;
399 mp_irq.irqtype = mp_INT;
400 mp_irq.irqflag = (trigger == ACPI_EDGE_SENSITIVE ? 4 : 0x0c) |
401 (polarity == ACPI_ACTIVE_HIGH ? 1 : 3);
402 mp_irq.srcbus = number;
403 mp_irq.srcbusirq = (((devfn >> 3) & 0x1f) << 2) | ((pin - 1) & 3);
404 ioapic = mp_find_ioapic(gsi);
405 mp_irq.dstapic = mpc_ioapic_id(ioapic);
406 mp_irq.dstirq = mp_find_ioapic_pin(ioapic, gsi);
407
408 mp_save_irq(&mp_irq);
409 #endif
410 return 0;
411 }
412
413 static int __init
414 acpi_parse_ioapic(struct acpi_subtable_header * header, const unsigned long end)
415 {
416 struct acpi_madt_io_apic *ioapic = NULL;
417 struct ioapic_domain_cfg cfg = {
418 .type = IOAPIC_DOMAIN_DYNAMIC,
419 .ops = &mp_ioapic_irqdomain_ops,
420 };
421
422 ioapic = (struct acpi_madt_io_apic *)header;
423
424 if (BAD_MADT_ENTRY(ioapic, end))
425 return -EINVAL;
426
427 acpi_table_print_madt_entry(header);
428
429 /* Statically assign IRQ numbers for IOAPICs hosting legacy IRQs */
430 if (ioapic->global_irq_base < nr_legacy_irqs())
431 cfg.type = IOAPIC_DOMAIN_LEGACY;
432
433 mp_register_ioapic(ioapic->id, ioapic->address, ioapic->global_irq_base,
434 &cfg);
435
436 return 0;
437 }
438
439 /*
440 * Parse Interrupt Source Override for the ACPI SCI
441 */
442 static void __init acpi_sci_ioapic_setup(u8 bus_irq, u16 polarity, u16 trigger, u32 gsi)
443 {
444 if (trigger == 0) /* compatible SCI trigger is level */
445 trigger = 3;
446
447 if (polarity == 0) /* compatible SCI polarity is low */
448 polarity = 3;
449
450 /* Command-line over-ride via acpi_sci= */
451 if (acpi_sci_flags & ACPI_MADT_TRIGGER_MASK)
452 trigger = (acpi_sci_flags & ACPI_MADT_TRIGGER_MASK) >> 2;
453
454 if (acpi_sci_flags & ACPI_MADT_POLARITY_MASK)
455 polarity = acpi_sci_flags & ACPI_MADT_POLARITY_MASK;
456
457 mp_override_legacy_irq(bus_irq, polarity, trigger, gsi);
458
459 /*
460 * stash over-ride to indicate we've been here
461 * and for later update of acpi_gbl_FADT
462 */
463 acpi_sci_override_gsi = gsi;
464 return;
465 }
466
467 static int __init
468 acpi_parse_int_src_ovr(struct acpi_subtable_header * header,
469 const unsigned long end)
470 {
471 struct acpi_madt_interrupt_override *intsrc = NULL;
472
473 intsrc = (struct acpi_madt_interrupt_override *)header;
474
475 if (BAD_MADT_ENTRY(intsrc, end))
476 return -EINVAL;
477
478 acpi_table_print_madt_entry(header);
479
480 if (intsrc->source_irq == acpi_gbl_FADT.sci_interrupt) {
481 acpi_sci_ioapic_setup(intsrc->source_irq,
482 intsrc->inti_flags & ACPI_MADT_POLARITY_MASK,
483 (intsrc->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2,
484 intsrc->global_irq);
485 return 0;
486 }
487
488 if (intsrc->source_irq == 0) {
489 if (acpi_skip_timer_override) {
490 printk(PREFIX "BIOS IRQ0 override ignored.\n");
491 return 0;
492 }
493
494 if ((intsrc->global_irq == 2) && acpi_fix_pin2_polarity
495 && (intsrc->inti_flags & ACPI_MADT_POLARITY_MASK)) {
496 intsrc->inti_flags &= ~ACPI_MADT_POLARITY_MASK;
497 printk(PREFIX "BIOS IRQ0 pin2 override: forcing polarity to high active.\n");
498 }
499 }
500
501 mp_override_legacy_irq(intsrc->source_irq,
502 intsrc->inti_flags & ACPI_MADT_POLARITY_MASK,
503 (intsrc->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2,
504 intsrc->global_irq);
505
506 return 0;
507 }
508
509 static int __init
510 acpi_parse_nmi_src(struct acpi_subtable_header * header, const unsigned long end)
511 {
512 struct acpi_madt_nmi_source *nmi_src = NULL;
513
514 nmi_src = (struct acpi_madt_nmi_source *)header;
515
516 if (BAD_MADT_ENTRY(nmi_src, end))
517 return -EINVAL;
518
519 acpi_table_print_madt_entry(header);
520
521 /* TBD: Support nimsrc entries? */
522
523 return 0;
524 }
525
526 #endif /* CONFIG_X86_IO_APIC */
527
528 /*
529 * acpi_pic_sci_set_trigger()
530 *
531 * use ELCR to set PIC-mode trigger type for SCI
532 *
533 * If a PIC-mode SCI is not recognized or gives spurious IRQ7's
534 * it may require Edge Trigger -- use "acpi_sci=edge"
535 *
536 * Port 0x4d0-4d1 are ECLR1 and ECLR2, the Edge/Level Control Registers
537 * for the 8259 PIC. bit[n] = 1 means irq[n] is Level, otherwise Edge.
538 * ECLR1 is IRQs 0-7 (IRQ 0, 1, 2 must be 0)
539 * ECLR2 is IRQs 8-15 (IRQ 8, 13 must be 0)
540 */
541
542 void __init acpi_pic_sci_set_trigger(unsigned int irq, u16 trigger)
543 {
544 unsigned int mask = 1 << irq;
545 unsigned int old, new;
546
547 /* Real old ELCR mask */
548 old = inb(0x4d0) | (inb(0x4d1) << 8);
549
550 /*
551 * If we use ACPI to set PCI IRQs, then we should clear ELCR
552 * since we will set it correctly as we enable the PCI irq
553 * routing.
554 */
555 new = acpi_noirq ? old : 0;
556
557 /*
558 * Update SCI information in the ELCR, it isn't in the PCI
559 * routing tables..
560 */
561 switch (trigger) {
562 case 1: /* Edge - clear */
563 new &= ~mask;
564 break;
565 case 3: /* Level - set */
566 new |= mask;
567 break;
568 }
569
570 if (old == new)
571 return;
572
573 printk(PREFIX "setting ELCR to %04x (from %04x)\n", new, old);
574 outb(new, 0x4d0);
575 outb(new >> 8, 0x4d1);
576 }
577
578 int acpi_gsi_to_irq(u32 gsi, unsigned int *irqp)
579 {
580 int rc, irq, trigger, polarity;
581
582 if (acpi_irq_model == ACPI_IRQ_MODEL_PIC) {
583 *irqp = gsi;
584 return 0;
585 }
586
587 rc = acpi_get_override_irq(gsi, &trigger, &polarity);
588 if (rc == 0) {
589 trigger = trigger ? ACPI_LEVEL_SENSITIVE : ACPI_EDGE_SENSITIVE;
590 polarity = polarity ? ACPI_ACTIVE_LOW : ACPI_ACTIVE_HIGH;
591 irq = acpi_register_gsi(NULL, gsi, trigger, polarity);
592 if (irq >= 0) {
593 *irqp = irq;
594 return 0;
595 }
596 }
597
598 return -1;
599 }
600 EXPORT_SYMBOL_GPL(acpi_gsi_to_irq);
601
602 int acpi_isa_irq_to_gsi(unsigned isa_irq, u32 *gsi)
603 {
604 if (isa_irq < nr_legacy_irqs() &&
605 isa_irq_to_gsi[isa_irq] != ACPI_INVALID_GSI) {
606 *gsi = isa_irq_to_gsi[isa_irq];
607 return 0;
608 }
609
610 return -1;
611 }
612
613 static int acpi_register_gsi_pic(struct device *dev, u32 gsi,
614 int trigger, int polarity)
615 {
616 #ifdef CONFIG_PCI
617 /*
618 * Make sure all (legacy) PCI IRQs are set as level-triggered.
619 */
620 if (trigger == ACPI_LEVEL_SENSITIVE)
621 elcr_set_level_irq(gsi);
622 #endif
623
624 return gsi;
625 }
626
627 #ifdef CONFIG_X86_LOCAL_APIC
628 static int acpi_register_gsi_ioapic(struct device *dev, u32 gsi,
629 int trigger, int polarity)
630 {
631 int irq = gsi;
632 #ifdef CONFIG_X86_IO_APIC
633 int node;
634 struct irq_alloc_info info;
635
636 node = dev ? dev_to_node(dev) : NUMA_NO_NODE;
637 trigger = trigger == ACPI_EDGE_SENSITIVE ? 0 : 1;
638 polarity = polarity == ACPI_ACTIVE_HIGH ? 0 : 1;
639 ioapic_set_alloc_attr(&info, node, trigger, polarity);
640
641 mutex_lock(&acpi_ioapic_lock);
642 irq = mp_map_gsi_to_irq(gsi, IOAPIC_MAP_ALLOC, &info);
643 /* Don't set up the ACPI SCI because it's already set up */
644 if (irq >= 0 && enable_update_mptable &&
645 acpi_gbl_FADT.sci_interrupt != gsi)
646 mp_config_acpi_gsi(dev, gsi, trigger, polarity);
647 mutex_unlock(&acpi_ioapic_lock);
648 #endif
649
650 return irq;
651 }
652
653 static void acpi_unregister_gsi_ioapic(u32 gsi)
654 {
655 #ifdef CONFIG_X86_IO_APIC
656 int irq;
657
658 mutex_lock(&acpi_ioapic_lock);
659 irq = mp_map_gsi_to_irq(gsi, 0, NULL);
660 if (irq > 0)
661 mp_unmap_irq(irq);
662 mutex_unlock(&acpi_ioapic_lock);
663 #endif
664 }
665 #endif
666
667 int (*__acpi_register_gsi)(struct device *dev, u32 gsi,
668 int trigger, int polarity) = acpi_register_gsi_pic;
669 void (*__acpi_unregister_gsi)(u32 gsi) = NULL;
670
671 #ifdef CONFIG_ACPI_SLEEP
672 int (*acpi_suspend_lowlevel)(void) = x86_acpi_suspend_lowlevel;
673 #else
674 int (*acpi_suspend_lowlevel)(void);
675 #endif
676
677 /*
678 * success: return IRQ number (>=0)
679 * failure: return < 0
680 */
681 int acpi_register_gsi(struct device *dev, u32 gsi, int trigger, int polarity)
682 {
683 return __acpi_register_gsi(dev, gsi, trigger, polarity);
684 }
685 EXPORT_SYMBOL_GPL(acpi_register_gsi);
686
687 void acpi_unregister_gsi(u32 gsi)
688 {
689 if (__acpi_unregister_gsi)
690 __acpi_unregister_gsi(gsi);
691 }
692 EXPORT_SYMBOL_GPL(acpi_unregister_gsi);
693
694 #ifdef CONFIG_X86_LOCAL_APIC
695 static void __init acpi_set_irq_model_ioapic(void)
696 {
697 acpi_irq_model = ACPI_IRQ_MODEL_IOAPIC;
698 __acpi_register_gsi = acpi_register_gsi_ioapic;
699 __acpi_unregister_gsi = acpi_unregister_gsi_ioapic;
700 acpi_ioapic = 1;
701 }
702 #endif
703
704 /*
705 * ACPI based hotplug support for CPU
706 */
707 #ifdef CONFIG_ACPI_HOTPLUG_CPU
708 #include <acpi/processor.h>
709
710 static void acpi_map_cpu2node(acpi_handle handle, int cpu, int physid)
711 {
712 #ifdef CONFIG_ACPI_NUMA
713 int nid;
714
715 nid = acpi_get_node(handle);
716 if (nid != -1) {
717 set_apicid_to_node(physid, nid);
718 numa_set_node(cpu, nid);
719 }
720 #endif
721 }
722
723 int acpi_map_cpu(acpi_handle handle, phys_cpuid_t physid, int *pcpu)
724 {
725 int cpu;
726
727 cpu = acpi_register_lapic(physid, U32_MAX, ACPI_MADT_ENABLED);
728 if (cpu < 0) {
729 pr_info(PREFIX "Unable to map lapic to logical cpu number\n");
730 return cpu;
731 }
732
733 acpi_processor_set_pdc(handle);
734 acpi_map_cpu2node(handle, cpu, physid);
735
736 *pcpu = cpu;
737 return 0;
738 }
739 EXPORT_SYMBOL(acpi_map_cpu);
740
741 int acpi_unmap_cpu(int cpu)
742 {
743 #ifdef CONFIG_ACPI_NUMA
744 set_apicid_to_node(per_cpu(x86_cpu_to_apicid, cpu), NUMA_NO_NODE);
745 #endif
746
747 per_cpu(x86_cpu_to_apicid, cpu) = -1;
748 set_cpu_present(cpu, false);
749 num_processors--;
750
751 return (0);
752 }
753 EXPORT_SYMBOL(acpi_unmap_cpu);
754 #endif /* CONFIG_ACPI_HOTPLUG_CPU */
755
756 int acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base)
757 {
758 int ret = -ENOSYS;
759 #ifdef CONFIG_ACPI_HOTPLUG_IOAPIC
760 int ioapic_id;
761 u64 addr;
762 struct ioapic_domain_cfg cfg = {
763 .type = IOAPIC_DOMAIN_DYNAMIC,
764 .ops = &mp_ioapic_irqdomain_ops,
765 };
766
767 ioapic_id = acpi_get_ioapic_id(handle, gsi_base, &addr);
768 if (ioapic_id < 0) {
769 unsigned long long uid;
770 acpi_status status;
771
772 status = acpi_evaluate_integer(handle, METHOD_NAME__UID,
773 NULL, &uid);
774 if (ACPI_FAILURE(status)) {
775 acpi_handle_warn(handle, "failed to get IOAPIC ID.\n");
776 return -EINVAL;
777 }
778 ioapic_id = (int)uid;
779 }
780
781 mutex_lock(&acpi_ioapic_lock);
782 ret = mp_register_ioapic(ioapic_id, phys_addr, gsi_base, &cfg);
783 mutex_unlock(&acpi_ioapic_lock);
784 #endif
785
786 return ret;
787 }
788 EXPORT_SYMBOL(acpi_register_ioapic);
789
790 int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base)
791 {
792 int ret = -ENOSYS;
793
794 #ifdef CONFIG_ACPI_HOTPLUG_IOAPIC
795 mutex_lock(&acpi_ioapic_lock);
796 ret = mp_unregister_ioapic(gsi_base);
797 mutex_unlock(&acpi_ioapic_lock);
798 #endif
799
800 return ret;
801 }
802 EXPORT_SYMBOL(acpi_unregister_ioapic);
803
804 /**
805 * acpi_ioapic_registered - Check whether IOAPIC assoicatied with @gsi_base
806 * has been registered
807 * @handle: ACPI handle of the IOAPIC deivce
808 * @gsi_base: GSI base associated with the IOAPIC
809 *
810 * Assume caller holds some type of lock to serialize acpi_ioapic_registered()
811 * with acpi_register_ioapic()/acpi_unregister_ioapic().
812 */
813 int acpi_ioapic_registered(acpi_handle handle, u32 gsi_base)
814 {
815 int ret = 0;
816
817 #ifdef CONFIG_ACPI_HOTPLUG_IOAPIC
818 mutex_lock(&acpi_ioapic_lock);
819 ret = mp_ioapic_registered(gsi_base);
820 mutex_unlock(&acpi_ioapic_lock);
821 #endif
822
823 return ret;
824 }
825
826 static int __init acpi_parse_sbf(struct acpi_table_header *table)
827 {
828 struct acpi_table_boot *sb = (struct acpi_table_boot *)table;
829
830 sbf_port = sb->cmos_index; /* Save CMOS port */
831
832 return 0;
833 }
834
835 #ifdef CONFIG_HPET_TIMER
836 #include <asm/hpet.h>
837
838 static struct resource *hpet_res __initdata;
839
840 static int __init acpi_parse_hpet(struct acpi_table_header *table)
841 {
842 struct acpi_table_hpet *hpet_tbl = (struct acpi_table_hpet *)table;
843
844 if (hpet_tbl->address.space_id != ACPI_SPACE_MEM) {
845 printk(KERN_WARNING PREFIX "HPET timers must be located in "
846 "memory.\n");
847 return -1;
848 }
849
850 hpet_address = hpet_tbl->address.address;
851 hpet_blockid = hpet_tbl->sequence;
852
853 /*
854 * Some broken BIOSes advertise HPET at 0x0. We really do not
855 * want to allocate a resource there.
856 */
857 if (!hpet_address) {
858 printk(KERN_WARNING PREFIX
859 "HPET id: %#x base: %#lx is invalid\n",
860 hpet_tbl->id, hpet_address);
861 return 0;
862 }
863 #ifdef CONFIG_X86_64
864 /*
865 * Some even more broken BIOSes advertise HPET at
866 * 0xfed0000000000000 instead of 0xfed00000. Fix it up and add
867 * some noise:
868 */
869 if (hpet_address == 0xfed0000000000000UL) {
870 if (!hpet_force_user) {
871 printk(KERN_WARNING PREFIX "HPET id: %#x "
872 "base: 0xfed0000000000000 is bogus\n "
873 "try hpet=force on the kernel command line to "
874 "fix it up to 0xfed00000.\n", hpet_tbl->id);
875 hpet_address = 0;
876 return 0;
877 }
878 printk(KERN_WARNING PREFIX
879 "HPET id: %#x base: 0xfed0000000000000 fixed up "
880 "to 0xfed00000.\n", hpet_tbl->id);
881 hpet_address >>= 32;
882 }
883 #endif
884 printk(KERN_INFO PREFIX "HPET id: %#x base: %#lx\n",
885 hpet_tbl->id, hpet_address);
886
887 /*
888 * Allocate and initialize the HPET firmware resource for adding into
889 * the resource tree during the lateinit timeframe.
890 */
891 #define HPET_RESOURCE_NAME_SIZE 9
892 hpet_res = alloc_bootmem(sizeof(*hpet_res) + HPET_RESOURCE_NAME_SIZE);
893
894 hpet_res->name = (void *)&hpet_res[1];
895 hpet_res->flags = IORESOURCE_MEM;
896 snprintf((char *)hpet_res->name, HPET_RESOURCE_NAME_SIZE, "HPET %u",
897 hpet_tbl->sequence);
898
899 hpet_res->start = hpet_address;
900 hpet_res->end = hpet_address + (1 * 1024) - 1;
901
902 return 0;
903 }
904
905 /*
906 * hpet_insert_resource inserts the HPET resources used into the resource
907 * tree.
908 */
909 static __init int hpet_insert_resource(void)
910 {
911 if (!hpet_res)
912 return 1;
913
914 return insert_resource(&iomem_resource, hpet_res);
915 }
916
917 late_initcall(hpet_insert_resource);
918
919 #else
920 #define acpi_parse_hpet NULL
921 #endif
922
923 static int __init acpi_parse_fadt(struct acpi_table_header *table)
924 {
925 if (!(acpi_gbl_FADT.boot_flags & ACPI_FADT_LEGACY_DEVICES)) {
926 pr_debug("ACPI: no legacy devices present\n");
927 x86_platform.legacy.devices.pnpbios = 0;
928 }
929
930 if (acpi_gbl_FADT.boot_flags & ACPI_FADT_NO_CMOS_RTC) {
931 pr_debug("ACPI: not registering RTC platform device\n");
932 x86_platform.legacy.rtc = 0;
933 }
934
935 #ifdef CONFIG_X86_PM_TIMER
936 /* detect the location of the ACPI PM Timer */
937 if (acpi_gbl_FADT.header.revision >= FADT2_REVISION_ID) {
938 /* FADT rev. 2 */
939 if (acpi_gbl_FADT.xpm_timer_block.space_id !=
940 ACPI_ADR_SPACE_SYSTEM_IO)
941 return 0;
942
943 pmtmr_ioport = acpi_gbl_FADT.xpm_timer_block.address;
944 /*
945 * "X" fields are optional extensions to the original V1.0
946 * fields, so we must selectively expand V1.0 fields if the
947 * corresponding X field is zero.
948 */
949 if (!pmtmr_ioport)
950 pmtmr_ioport = acpi_gbl_FADT.pm_timer_block;
951 } else {
952 /* FADT rev. 1 */
953 pmtmr_ioport = acpi_gbl_FADT.pm_timer_block;
954 }
955 if (pmtmr_ioport)
956 printk(KERN_INFO PREFIX "PM-Timer IO Port: %#x\n",
957 pmtmr_ioport);
958 #endif
959 return 0;
960 }
961
962 #ifdef CONFIG_X86_LOCAL_APIC
963 /*
964 * Parse LAPIC entries in MADT
965 * returns 0 on success, < 0 on error
966 */
967
968 static int __init early_acpi_parse_madt_lapic_addr_ovr(void)
969 {
970 int count;
971
972 if (!boot_cpu_has(X86_FEATURE_APIC))
973 return -ENODEV;
974
975 /*
976 * Note that the LAPIC address is obtained from the MADT (32-bit value)
977 * and (optionally) overridden by a LAPIC_ADDR_OVR entry (64-bit value).
978 */
979
980 count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE,
981 acpi_parse_lapic_addr_ovr, 0);
982 if (count < 0) {
983 printk(KERN_ERR PREFIX
984 "Error parsing LAPIC address override entry\n");
985 return count;
986 }
987
988 register_lapic_address(acpi_lapic_addr);
989
990 return count;
991 }
992
993 static int __init acpi_parse_madt_lapic_entries(void)
994 {
995 int count;
996 int x2count = 0;
997 int ret;
998 struct acpi_subtable_proc madt_proc[2];
999
1000 if (!boot_cpu_has(X86_FEATURE_APIC))
1001 return -ENODEV;
1002
1003 count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_SAPIC,
1004 acpi_parse_sapic, MAX_LOCAL_APIC);
1005
1006 if (!count) {
1007 memset(madt_proc, 0, sizeof(madt_proc));
1008 madt_proc[0].id = ACPI_MADT_TYPE_LOCAL_APIC;
1009 madt_proc[0].handler = acpi_parse_lapic;
1010 madt_proc[1].id = ACPI_MADT_TYPE_LOCAL_X2APIC;
1011 madt_proc[1].handler = acpi_parse_x2apic;
1012 ret = acpi_table_parse_entries_array(ACPI_SIG_MADT,
1013 sizeof(struct acpi_table_madt),
1014 madt_proc, ARRAY_SIZE(madt_proc), MAX_LOCAL_APIC);
1015 if (ret < 0) {
1016 printk(KERN_ERR PREFIX
1017 "Error parsing LAPIC/X2APIC entries\n");
1018 return ret;
1019 }
1020
1021 count = madt_proc[0].count;
1022 x2count = madt_proc[1].count;
1023 }
1024 if (!count && !x2count) {
1025 printk(KERN_ERR PREFIX "No LAPIC entries present\n");
1026 /* TBD: Cleanup to allow fallback to MPS */
1027 return -ENODEV;
1028 } else if (count < 0 || x2count < 0) {
1029 printk(KERN_ERR PREFIX "Error parsing LAPIC entry\n");
1030 /* TBD: Cleanup to allow fallback to MPS */
1031 return count;
1032 }
1033
1034 x2count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_X2APIC_NMI,
1035 acpi_parse_x2apic_nmi, 0);
1036 count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_NMI,
1037 acpi_parse_lapic_nmi, 0);
1038 if (count < 0 || x2count < 0) {
1039 printk(KERN_ERR PREFIX "Error parsing LAPIC NMI entry\n");
1040 /* TBD: Cleanup to allow fallback to MPS */
1041 return count;
1042 }
1043 return 0;
1044 }
1045 #endif /* CONFIG_X86_LOCAL_APIC */
1046
1047 #ifdef CONFIG_X86_IO_APIC
1048 static void __init mp_config_acpi_legacy_irqs(void)
1049 {
1050 int i;
1051 struct mpc_intsrc mp_irq;
1052
1053 #ifdef CONFIG_EISA
1054 /*
1055 * Fabricate the legacy ISA bus (bus #31).
1056 */
1057 mp_bus_id_to_type[MP_ISA_BUS] = MP_BUS_ISA;
1058 #endif
1059 set_bit(MP_ISA_BUS, mp_bus_not_pci);
1060 pr_debug("Bus #%d is ISA\n", MP_ISA_BUS);
1061
1062 /*
1063 * Use the default configuration for the IRQs 0-15. Unless
1064 * overridden by (MADT) interrupt source override entries.
1065 */
1066 for (i = 0; i < nr_legacy_irqs(); i++) {
1067 int ioapic, pin;
1068 unsigned int dstapic;
1069 int idx;
1070 u32 gsi;
1071
1072 /* Locate the gsi that irq i maps to. */
1073 if (acpi_isa_irq_to_gsi(i, &gsi))
1074 continue;
1075
1076 /*
1077 * Locate the IOAPIC that manages the ISA IRQ.
1078 */
1079 ioapic = mp_find_ioapic(gsi);
1080 if (ioapic < 0)
1081 continue;
1082 pin = mp_find_ioapic_pin(ioapic, gsi);
1083 dstapic = mpc_ioapic_id(ioapic);
1084
1085 for (idx = 0; idx < mp_irq_entries; idx++) {
1086 struct mpc_intsrc *irq = mp_irqs + idx;
1087
1088 /* Do we already have a mapping for this ISA IRQ? */
1089 if (irq->srcbus == MP_ISA_BUS && irq->srcbusirq == i)
1090 break;
1091
1092 /* Do we already have a mapping for this IOAPIC pin */
1093 if (irq->dstapic == dstapic && irq->dstirq == pin)
1094 break;
1095 }
1096
1097 if (idx != mp_irq_entries) {
1098 printk(KERN_DEBUG "ACPI: IRQ%d used by override.\n", i);
1099 continue; /* IRQ already used */
1100 }
1101
1102 mp_irq.type = MP_INTSRC;
1103 mp_irq.irqflag = 0; /* Conforming */
1104 mp_irq.srcbus = MP_ISA_BUS;
1105 mp_irq.dstapic = dstapic;
1106 mp_irq.irqtype = mp_INT;
1107 mp_irq.srcbusirq = i; /* Identity mapped */
1108 mp_irq.dstirq = pin;
1109
1110 mp_save_irq(&mp_irq);
1111 }
1112 }
1113
1114 /*
1115 * Parse IOAPIC related entries in MADT
1116 * returns 0 on success, < 0 on error
1117 */
1118 static int __init acpi_parse_madt_ioapic_entries(void)
1119 {
1120 int count;
1121
1122 /*
1123 * ACPI interpreter is required to complete interrupt setup,
1124 * so if it is off, don't enumerate the io-apics with ACPI.
1125 * If MPS is present, it will handle them,
1126 * otherwise the system will stay in PIC mode
1127 */
1128 if (acpi_disabled || acpi_noirq)
1129 return -ENODEV;
1130
1131 if (!boot_cpu_has(X86_FEATURE_APIC))
1132 return -ENODEV;
1133
1134 /*
1135 * if "noapic" boot option, don't look for IO-APICs
1136 */
1137 if (skip_ioapic_setup) {
1138 printk(KERN_INFO PREFIX "Skipping IOAPIC probe "
1139 "due to 'noapic' option.\n");
1140 return -ENODEV;
1141 }
1142
1143 count = acpi_table_parse_madt(ACPI_MADT_TYPE_IO_APIC, acpi_parse_ioapic,
1144 MAX_IO_APICS);
1145 if (!count) {
1146 printk(KERN_ERR PREFIX "No IOAPIC entries present\n");
1147 return -ENODEV;
1148 } else if (count < 0) {
1149 printk(KERN_ERR PREFIX "Error parsing IOAPIC entry\n");
1150 return count;
1151 }
1152
1153 count = acpi_table_parse_madt(ACPI_MADT_TYPE_INTERRUPT_OVERRIDE,
1154 acpi_parse_int_src_ovr, nr_irqs);
1155 if (count < 0) {
1156 printk(KERN_ERR PREFIX
1157 "Error parsing interrupt source overrides entry\n");
1158 /* TBD: Cleanup to allow fallback to MPS */
1159 return count;
1160 }
1161
1162 /*
1163 * If BIOS did not supply an INT_SRC_OVR for the SCI
1164 * pretend we got one so we can set the SCI flags.
1165 */
1166 if (!acpi_sci_override_gsi)
1167 acpi_sci_ioapic_setup(acpi_gbl_FADT.sci_interrupt, 0, 0,
1168 acpi_gbl_FADT.sci_interrupt);
1169
1170 /* Fill in identity legacy mappings where no override */
1171 mp_config_acpi_legacy_irqs();
1172
1173 count = acpi_table_parse_madt(ACPI_MADT_TYPE_NMI_SOURCE,
1174 acpi_parse_nmi_src, nr_irqs);
1175 if (count < 0) {
1176 printk(KERN_ERR PREFIX "Error parsing NMI SRC entry\n");
1177 /* TBD: Cleanup to allow fallback to MPS */
1178 return count;
1179 }
1180
1181 return 0;
1182 }
1183 #else
1184 static inline int acpi_parse_madt_ioapic_entries(void)
1185 {
1186 return -1;
1187 }
1188 #endif /* !CONFIG_X86_IO_APIC */
1189
1190 static void __init early_acpi_process_madt(void)
1191 {
1192 #ifdef CONFIG_X86_LOCAL_APIC
1193 int error;
1194
1195 if (!acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) {
1196
1197 /*
1198 * Parse MADT LAPIC entries
1199 */
1200 error = early_acpi_parse_madt_lapic_addr_ovr();
1201 if (!error) {
1202 acpi_lapic = 1;
1203 smp_found_config = 1;
1204 }
1205 if (error == -EINVAL) {
1206 /*
1207 * Dell Precision Workstation 410, 610 come here.
1208 */
1209 printk(KERN_ERR PREFIX
1210 "Invalid BIOS MADT, disabling ACPI\n");
1211 disable_acpi();
1212 }
1213 }
1214 #endif
1215 }
1216
1217 static void __init acpi_process_madt(void)
1218 {
1219 #ifdef CONFIG_X86_LOCAL_APIC
1220 int error;
1221
1222 if (!acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) {
1223
1224 /*
1225 * Parse MADT LAPIC entries
1226 */
1227 error = acpi_parse_madt_lapic_entries();
1228 if (!error) {
1229 acpi_lapic = 1;
1230
1231 /*
1232 * Parse MADT IO-APIC entries
1233 */
1234 mutex_lock(&acpi_ioapic_lock);
1235 error = acpi_parse_madt_ioapic_entries();
1236 mutex_unlock(&acpi_ioapic_lock);
1237 if (!error) {
1238 acpi_set_irq_model_ioapic();
1239
1240 smp_found_config = 1;
1241 }
1242 }
1243 if (error == -EINVAL) {
1244 /*
1245 * Dell Precision Workstation 410, 610 come here.
1246 */
1247 printk(KERN_ERR PREFIX
1248 "Invalid BIOS MADT, disabling ACPI\n");
1249 disable_acpi();
1250 }
1251 } else {
1252 /*
1253 * ACPI found no MADT, and so ACPI wants UP PIC mode.
1254 * In the event an MPS table was found, forget it.
1255 * Boot with "acpi=off" to use MPS on such a system.
1256 */
1257 if (smp_found_config) {
1258 printk(KERN_WARNING PREFIX
1259 "No APIC-table, disabling MPS\n");
1260 smp_found_config = 0;
1261 }
1262 }
1263
1264 /*
1265 * ACPI supports both logical (e.g. Hyper-Threading) and physical
1266 * processors, where MPS only supports physical.
1267 */
1268 if (acpi_lapic && acpi_ioapic)
1269 printk(KERN_INFO "Using ACPI (MADT) for SMP configuration "
1270 "information\n");
1271 else if (acpi_lapic)
1272 printk(KERN_INFO "Using ACPI for processor (LAPIC) "
1273 "configuration information\n");
1274 #endif
1275 return;
1276 }
1277
1278 static int __init disable_acpi_irq(const struct dmi_system_id *d)
1279 {
1280 if (!acpi_force) {
1281 printk(KERN_NOTICE "%s detected: force use of acpi=noirq\n",
1282 d->ident);
1283 acpi_noirq_set();
1284 }
1285 return 0;
1286 }
1287
1288 static int __init disable_acpi_pci(const struct dmi_system_id *d)
1289 {
1290 if (!acpi_force) {
1291 printk(KERN_NOTICE "%s detected: force use of pci=noacpi\n",
1292 d->ident);
1293 acpi_disable_pci();
1294 }
1295 return 0;
1296 }
1297
1298 static int __init dmi_disable_acpi(const struct dmi_system_id *d)
1299 {
1300 if (!acpi_force) {
1301 printk(KERN_NOTICE "%s detected: acpi off\n", d->ident);
1302 disable_acpi();
1303 } else {
1304 printk(KERN_NOTICE
1305 "Warning: DMI blacklist says broken, but acpi forced\n");
1306 }
1307 return 0;
1308 }
1309
1310 /*
1311 * Force ignoring BIOS IRQ0 override
1312 */
1313 static int __init dmi_ignore_irq0_timer_override(const struct dmi_system_id *d)
1314 {
1315 if (!acpi_skip_timer_override) {
1316 pr_notice("%s detected: Ignoring BIOS IRQ0 override\n",
1317 d->ident);
1318 acpi_skip_timer_override = 1;
1319 }
1320 return 0;
1321 }
1322
1323 /*
1324 * ACPI offers an alternative platform interface model that removes
1325 * ACPI hardware requirements for platforms that do not implement
1326 * the PC Architecture.
1327 *
1328 * We initialize the Hardware-reduced ACPI model here:
1329 */
1330 static void __init acpi_reduced_hw_init(void)
1331 {
1332 if (acpi_gbl_reduced_hardware) {
1333 /*
1334 * Override x86_init functions and bypass legacy pic
1335 * in Hardware-reduced ACPI mode
1336 */
1337 x86_init.timers.timer_init = x86_init_noop;
1338 x86_init.irqs.pre_vector_init = x86_init_noop;
1339 legacy_pic = &null_legacy_pic;
1340 }
1341 }
1342
1343 /*
1344 * If your system is blacklisted here, but you find that acpi=force
1345 * works for you, please contact linux-acpi@vger.kernel.org
1346 */
1347 static struct dmi_system_id __initdata acpi_dmi_table[] = {
1348 /*
1349 * Boxes that need ACPI disabled
1350 */
1351 {
1352 .callback = dmi_disable_acpi,
1353 .ident = "IBM Thinkpad",
1354 .matches = {
1355 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
1356 DMI_MATCH(DMI_BOARD_NAME, "2629H1G"),
1357 },
1358 },
1359
1360 /*
1361 * Boxes that need ACPI PCI IRQ routing disabled
1362 */
1363 {
1364 .callback = disable_acpi_irq,
1365 .ident = "ASUS A7V",
1366 .matches = {
1367 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC"),
1368 DMI_MATCH(DMI_BOARD_NAME, "<A7V>"),
1369 /* newer BIOS, Revision 1011, does work */
1370 DMI_MATCH(DMI_BIOS_VERSION,
1371 "ASUS A7V ACPI BIOS Revision 1007"),
1372 },
1373 },
1374 {
1375 /*
1376 * Latest BIOS for IBM 600E (1.16) has bad pcinum
1377 * for LPC bridge, which is needed for the PCI
1378 * interrupt links to work. DSDT fix is in bug 5966.
1379 * 2645, 2646 model numbers are shared with 600/600E/600X
1380 */
1381 .callback = disable_acpi_irq,
1382 .ident = "IBM Thinkpad 600 Series 2645",
1383 .matches = {
1384 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
1385 DMI_MATCH(DMI_BOARD_NAME, "2645"),
1386 },
1387 },
1388 {
1389 .callback = disable_acpi_irq,
1390 .ident = "IBM Thinkpad 600 Series 2646",
1391 .matches = {
1392 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
1393 DMI_MATCH(DMI_BOARD_NAME, "2646"),
1394 },
1395 },
1396 /*
1397 * Boxes that need ACPI PCI IRQ routing and PCI scan disabled
1398 */
1399 { /* _BBN 0 bug */
1400 .callback = disable_acpi_pci,
1401 .ident = "ASUS PR-DLS",
1402 .matches = {
1403 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."),
1404 DMI_MATCH(DMI_BOARD_NAME, "PR-DLS"),
1405 DMI_MATCH(DMI_BIOS_VERSION,
1406 "ASUS PR-DLS ACPI BIOS Revision 1010"),
1407 DMI_MATCH(DMI_BIOS_DATE, "03/21/2003")
1408 },
1409 },
1410 {
1411 .callback = disable_acpi_pci,
1412 .ident = "Acer TravelMate 36x Laptop",
1413 .matches = {
1414 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
1415 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 360"),
1416 },
1417 },
1418 {}
1419 };
1420
1421 /* second table for DMI checks that should run after early-quirks */
1422 static struct dmi_system_id __initdata acpi_dmi_table_late[] = {
1423 /*
1424 * HP laptops which use a DSDT reporting as HP/SB400/10000,
1425 * which includes some code which overrides all temperature
1426 * trip points to 16C if the INTIN2 input of the I/O APIC
1427 * is enabled. This input is incorrectly designated the
1428 * ISA IRQ 0 via an interrupt source override even though
1429 * it is wired to the output of the master 8259A and INTIN0
1430 * is not connected at all. Force ignoring BIOS IRQ0
1431 * override in that cases.
1432 */
1433 {
1434 .callback = dmi_ignore_irq0_timer_override,
1435 .ident = "HP nx6115 laptop",
1436 .matches = {
1437 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1438 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6115"),
1439 },
1440 },
1441 {
1442 .callback = dmi_ignore_irq0_timer_override,
1443 .ident = "HP NX6125 laptop",
1444 .matches = {
1445 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1446 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6125"),
1447 },
1448 },
1449 {
1450 .callback = dmi_ignore_irq0_timer_override,
1451 .ident = "HP NX6325 laptop",
1452 .matches = {
1453 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1454 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6325"),
1455 },
1456 },
1457 {
1458 .callback = dmi_ignore_irq0_timer_override,
1459 .ident = "HP 6715b laptop",
1460 .matches = {
1461 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1462 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq 6715b"),
1463 },
1464 },
1465 {
1466 .callback = dmi_ignore_irq0_timer_override,
1467 .ident = "FUJITSU SIEMENS",
1468 .matches = {
1469 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
1470 DMI_MATCH(DMI_PRODUCT_NAME, "AMILO PRO V2030"),
1471 },
1472 },
1473 {}
1474 };
1475
1476 /*
1477 * acpi_boot_table_init() and acpi_boot_init()
1478 * called from setup_arch(), always.
1479 * 1. checksums all tables
1480 * 2. enumerates lapics
1481 * 3. enumerates io-apics
1482 *
1483 * acpi_table_init() is separate to allow reading SRAT without
1484 * other side effects.
1485 *
1486 * side effects of acpi_boot_init:
1487 * acpi_lapic = 1 if LAPIC found
1488 * acpi_ioapic = 1 if IOAPIC found
1489 * if (acpi_lapic && acpi_ioapic) smp_found_config = 1;
1490 * if acpi_blacklisted() acpi_disabled = 1;
1491 * acpi_irq_model=...
1492 * ...
1493 */
1494
1495 void __init acpi_boot_table_init(void)
1496 {
1497 dmi_check_system(acpi_dmi_table);
1498
1499 /*
1500 * If acpi_disabled, bail out
1501 */
1502 if (acpi_disabled)
1503 return;
1504
1505 /*
1506 * Initialize the ACPI boot-time table parser.
1507 */
1508 if (acpi_table_init()) {
1509 disable_acpi();
1510 return;
1511 }
1512
1513 acpi_table_parse(ACPI_SIG_BOOT, acpi_parse_sbf);
1514
1515 /*
1516 * blacklist may disable ACPI entirely
1517 */
1518 if (acpi_blacklisted()) {
1519 if (acpi_force) {
1520 printk(KERN_WARNING PREFIX "acpi=force override\n");
1521 } else {
1522 printk(KERN_WARNING PREFIX "Disabling ACPI support\n");
1523 disable_acpi();
1524 return;
1525 }
1526 }
1527 }
1528
1529 int __init early_acpi_boot_init(void)
1530 {
1531 /*
1532 * If acpi_disabled, bail out
1533 */
1534 if (acpi_disabled)
1535 return 1;
1536
1537 /*
1538 * Process the Multiple APIC Description Table (MADT), if present
1539 */
1540 early_acpi_process_madt();
1541
1542 /*
1543 * Hardware-reduced ACPI mode initialization:
1544 */
1545 acpi_reduced_hw_init();
1546
1547 return 0;
1548 }
1549
1550 int __init acpi_boot_init(void)
1551 {
1552 /* those are executed after early-quirks are executed */
1553 dmi_check_system(acpi_dmi_table_late);
1554
1555 /*
1556 * If acpi_disabled, bail out
1557 */
1558 if (acpi_disabled)
1559 return 1;
1560
1561 acpi_table_parse(ACPI_SIG_BOOT, acpi_parse_sbf);
1562
1563 /*
1564 * set sci_int and PM timer address
1565 */
1566 acpi_table_parse(ACPI_SIG_FADT, acpi_parse_fadt);
1567
1568 /*
1569 * Process the Multiple APIC Description Table (MADT), if present
1570 */
1571 acpi_process_madt();
1572
1573 acpi_table_parse(ACPI_SIG_HPET, acpi_parse_hpet);
1574
1575 if (!acpi_noirq)
1576 x86_init.pci.init = pci_acpi_init;
1577
1578 return 0;
1579 }
1580
1581 static int __init parse_acpi(char *arg)
1582 {
1583 if (!arg)
1584 return -EINVAL;
1585
1586 /* "acpi=off" disables both ACPI table parsing and interpreter */
1587 if (strcmp(arg, "off") == 0) {
1588 disable_acpi();
1589 }
1590 /* acpi=force to over-ride black-list */
1591 else if (strcmp(arg, "force") == 0) {
1592 acpi_force = 1;
1593 acpi_disabled = 0;
1594 }
1595 /* acpi=strict disables out-of-spec workarounds */
1596 else if (strcmp(arg, "strict") == 0) {
1597 acpi_strict = 1;
1598 }
1599 /* acpi=rsdt use RSDT instead of XSDT */
1600 else if (strcmp(arg, "rsdt") == 0) {
1601 acpi_gbl_do_not_use_xsdt = TRUE;
1602 }
1603 /* "acpi=noirq" disables ACPI interrupt routing */
1604 else if (strcmp(arg, "noirq") == 0) {
1605 acpi_noirq_set();
1606 }
1607 /* "acpi=copy_dsdt" copys DSDT */
1608 else if (strcmp(arg, "copy_dsdt") == 0) {
1609 acpi_gbl_copy_dsdt_locally = 1;
1610 }
1611 /* "acpi=nocmcff" disables FF mode for corrected errors */
1612 else if (strcmp(arg, "nocmcff") == 0) {
1613 acpi_disable_cmcff = 1;
1614 } else {
1615 /* Core will printk when we return error. */
1616 return -EINVAL;
1617 }
1618 return 0;
1619 }
1620 early_param("acpi", parse_acpi);
1621
1622 /* FIXME: Using pci= for an ACPI parameter is a travesty. */
1623 static int __init parse_pci(char *arg)
1624 {
1625 if (arg && strcmp(arg, "noacpi") == 0)
1626 acpi_disable_pci();
1627 return 0;
1628 }
1629 early_param("pci", parse_pci);
1630
1631 int __init acpi_mps_check(void)
1632 {
1633 #if defined(CONFIG_X86_LOCAL_APIC) && !defined(CONFIG_X86_MPPARSE)
1634 /* mptable code is not built-in*/
1635 if (acpi_disabled || acpi_noirq) {
1636 printk(KERN_WARNING "MPS support code is not built-in.\n"
1637 "Using acpi=off or acpi=noirq or pci=noacpi "
1638 "may have problem\n");
1639 return 1;
1640 }
1641 #endif
1642 return 0;
1643 }
1644
1645 #ifdef CONFIG_X86_IO_APIC
1646 static int __init parse_acpi_skip_timer_override(char *arg)
1647 {
1648 acpi_skip_timer_override = 1;
1649 return 0;
1650 }
1651 early_param("acpi_skip_timer_override", parse_acpi_skip_timer_override);
1652
1653 static int __init parse_acpi_use_timer_override(char *arg)
1654 {
1655 acpi_use_timer_override = 1;
1656 return 0;
1657 }
1658 early_param("acpi_use_timer_override", parse_acpi_use_timer_override);
1659 #endif /* CONFIG_X86_IO_APIC */
1660
1661 static int __init setup_acpi_sci(char *s)
1662 {
1663 if (!s)
1664 return -EINVAL;
1665 if (!strcmp(s, "edge"))
1666 acpi_sci_flags = ACPI_MADT_TRIGGER_EDGE |
1667 (acpi_sci_flags & ~ACPI_MADT_TRIGGER_MASK);
1668 else if (!strcmp(s, "level"))
1669 acpi_sci_flags = ACPI_MADT_TRIGGER_LEVEL |
1670 (acpi_sci_flags & ~ACPI_MADT_TRIGGER_MASK);
1671 else if (!strcmp(s, "high"))
1672 acpi_sci_flags = ACPI_MADT_POLARITY_ACTIVE_HIGH |
1673 (acpi_sci_flags & ~ACPI_MADT_POLARITY_MASK);
1674 else if (!strcmp(s, "low"))
1675 acpi_sci_flags = ACPI_MADT_POLARITY_ACTIVE_LOW |
1676 (acpi_sci_flags & ~ACPI_MADT_POLARITY_MASK);
1677 else
1678 return -EINVAL;
1679 return 0;
1680 }
1681 early_param("acpi_sci", setup_acpi_sci);
1682
1683 int __acpi_acquire_global_lock(unsigned int *lock)
1684 {
1685 unsigned int old, new, val;
1686 do {
1687 old = *lock;
1688 new = (((old & ~0x3) + 2) + ((old >> 1) & 0x1));
1689 val = cmpxchg(lock, old, new);
1690 } while (unlikely (val != old));
1691 return (new < 3) ? -1 : 0;
1692 }
1693
1694 int __acpi_release_global_lock(unsigned int *lock)
1695 {
1696 unsigned int old, new, val;
1697 do {
1698 old = *lock;
1699 new = old & ~0x3;
1700 val = cmpxchg(lock, old, new);
1701 } while (unlikely (val != old));
1702 return old & 0x1;
1703 }
1704
1705 void __init arch_reserve_mem_area(acpi_physical_address addr, size_t size)
1706 {
1707 e820_add_region(addr, size, E820_ACPI);
1708 update_e820();
1709 }
Linux kernel - Deliverables
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