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Linux 4.1.18
[linux/fpc-iii.git] / arch / x86 / kernel / acpi / boot.c
blob07bea80223f69d60b0f66b45bef6018e2f3f07a1
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/irqdomain.h>
35 #include <linux/slab.h>
36 #include <linux/bootmem.h>
37 #include <linux/ioport.h>
38 #include <linux/pci.h>
39
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 (!cpu_has_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 * @enabled: this cpu is enabled or not
165 *
166 * Returns the logic cpu number which maps to the local apic
167 */
168 static int acpi_register_lapic(int id, u8 enabled)
169 {
170 unsigned int ver = 0;
171
172 if (id >= MAX_LOCAL_APIC) {
173 printk(KERN_INFO PREFIX "skipped apicid that is too big\n");
174 return -EINVAL;
175 }
176
177 if (!enabled) {
178 ++disabled_cpus;
179 return -EINVAL;
180 }
181
182 if (boot_cpu_physical_apicid != -1U)
183 ver = apic_version[boot_cpu_physical_apicid];
184
185 return generic_processor_info(id, ver);
186 }
187
188 static int __init
189 acpi_parse_x2apic(struct acpi_subtable_header *header, const unsigned long end)
190 {
191 struct acpi_madt_local_x2apic *processor = NULL;
192 int apic_id;
193 u8 enabled;
194
195 processor = (struct acpi_madt_local_x2apic *)header;
196
197 if (BAD_MADT_ENTRY(processor, end))
198 return -EINVAL;
199
200 acpi_table_print_madt_entry(header);
201
202 apic_id = processor->local_apic_id;
203 enabled = processor->lapic_flags & ACPI_MADT_ENABLED;
204 #ifdef CONFIG_X86_X2APIC
205 /*
206 * We need to register disabled CPU as well to permit
207 * counting disabled CPUs. This allows us to size
208 * cpus_possible_map more accurately, to permit
209 * to not preallocating memory for all NR_CPUS
210 * when we use CPU hotplug.
211 */
212 if (!apic->apic_id_valid(apic_id) && enabled)
213 printk(KERN_WARNING PREFIX "x2apic entry ignored\n");
214 else
215 acpi_register_lapic(apic_id, enabled);
216 #else
217 printk(KERN_WARNING PREFIX "x2apic entry ignored\n");
218 #endif
219
220 return 0;
221 }
222
223 static int __init
224 acpi_parse_lapic(struct acpi_subtable_header * header, const unsigned long end)
225 {
226 struct acpi_madt_local_apic *processor = NULL;
227
228 processor = (struct acpi_madt_local_apic *)header;
229
230 if (BAD_MADT_ENTRY(processor, end))
231 return -EINVAL;
232
233 acpi_table_print_madt_entry(header);
234
235 /*
236 * We need to register disabled CPU as well to permit
237 * counting disabled CPUs. This allows us to size
238 * cpus_possible_map more accurately, to permit
239 * to not preallocating memory for all NR_CPUS
240 * when we use CPU hotplug.
241 */
242 acpi_register_lapic(processor->id, /* APIC ID */
243 processor->lapic_flags & ACPI_MADT_ENABLED);
244
245 return 0;
246 }
247
248 static int __init
249 acpi_parse_sapic(struct acpi_subtable_header *header, const unsigned long end)
250 {
251 struct acpi_madt_local_sapic *processor = NULL;
252
253 processor = (struct acpi_madt_local_sapic *)header;
254
255 if (BAD_MADT_ENTRY(processor, end))
256 return -EINVAL;
257
258 acpi_table_print_madt_entry(header);
259
260 acpi_register_lapic((processor->id << 8) | processor->eid,/* APIC ID */
261 processor->lapic_flags & ACPI_MADT_ENABLED);
262
263 return 0;
264 }
265
266 static int __init
267 acpi_parse_lapic_addr_ovr(struct acpi_subtable_header * header,
268 const unsigned long end)
269 {
270 struct acpi_madt_local_apic_override *lapic_addr_ovr = NULL;
271
272 lapic_addr_ovr = (struct acpi_madt_local_apic_override *)header;
273
274 if (BAD_MADT_ENTRY(lapic_addr_ovr, end))
275 return -EINVAL;
276
277 acpi_lapic_addr = lapic_addr_ovr->address;
278
279 return 0;
280 }
281
282 static int __init
283 acpi_parse_x2apic_nmi(struct acpi_subtable_header *header,
284 const unsigned long end)
285 {
286 struct acpi_madt_local_x2apic_nmi *x2apic_nmi = NULL;
287
288 x2apic_nmi = (struct acpi_madt_local_x2apic_nmi *)header;
289
290 if (BAD_MADT_ENTRY(x2apic_nmi, end))
291 return -EINVAL;
292
293 acpi_table_print_madt_entry(header);
294
295 if (x2apic_nmi->lint != 1)
296 printk(KERN_WARNING PREFIX "NMI not connected to LINT 1!\n");
297
298 return 0;
299 }
300
301 static int __init
302 acpi_parse_lapic_nmi(struct acpi_subtable_header * header, const unsigned long end)
303 {
304 struct acpi_madt_local_apic_nmi *lapic_nmi = NULL;
305
306 lapic_nmi = (struct acpi_madt_local_apic_nmi *)header;
307
308 if (BAD_MADT_ENTRY(lapic_nmi, end))
309 return -EINVAL;
310
311 acpi_table_print_madt_entry(header);
312
313 if (lapic_nmi->lint != 1)
314 printk(KERN_WARNING PREFIX "NMI not connected to LINT 1!\n");
315
316 return 0;
317 }
318
319 #endif /*CONFIG_X86_LOCAL_APIC */
320
321 #ifdef CONFIG_X86_IO_APIC
322 #define MP_ISA_BUS 0
323
324 static void __init mp_override_legacy_irq(u8 bus_irq, u8 polarity, u8 trigger,
325 u32 gsi)
326 {
327 int ioapic;
328 int pin;
329 struct mpc_intsrc mp_irq;
330
331 /*
332 * Convert 'gsi' to 'ioapic.pin'.
333 */
334 ioapic = mp_find_ioapic(gsi);
335 if (ioapic < 0)
336 return;
337 pin = mp_find_ioapic_pin(ioapic, gsi);
338
339 /*
340 * TBD: This check is for faulty timer entries, where the override
341 * erroneously sets the trigger to level, resulting in a HUGE
342 * increase of timer interrupts!
343 */
344 if ((bus_irq == 0) && (trigger == 3))
345 trigger = 1;
346
347 mp_irq.type = MP_INTSRC;
348 mp_irq.irqtype = mp_INT;
349 mp_irq.irqflag = (trigger << 2) | polarity;
350 mp_irq.srcbus = MP_ISA_BUS;
351 mp_irq.srcbusirq = bus_irq; /* IRQ */
352 mp_irq.dstapic = mpc_ioapic_id(ioapic); /* APIC ID */
353 mp_irq.dstirq = pin; /* INTIN# */
354
355 mp_save_irq(&mp_irq);
356
357 /*
358 * Reset default identity mapping if gsi is also an legacy IRQ,
359 * otherwise there will be more than one entry with the same GSI
360 * and acpi_isa_irq_to_gsi() may give wrong result.
361 */
362 if (gsi < nr_legacy_irqs() && isa_irq_to_gsi[gsi] == gsi)
363 isa_irq_to_gsi[gsi] = ACPI_INVALID_GSI;
364 isa_irq_to_gsi[bus_irq] = gsi;
365 }
366
367 static int mp_config_acpi_gsi(struct device *dev, u32 gsi, int trigger,
368 int polarity)
369 {
370 #ifdef CONFIG_X86_MPPARSE
371 struct mpc_intsrc mp_irq;
372 struct pci_dev *pdev;
373 unsigned char number;
374 unsigned int devfn;
375 int ioapic;
376 u8 pin;
377
378 if (!acpi_ioapic)
379 return 0;
380 if (!dev || !dev_is_pci(dev))
381 return 0;
382
383 pdev = to_pci_dev(dev);
384 number = pdev->bus->number;
385 devfn = pdev->devfn;
386 pin = pdev->pin;
387 /* print the entry should happen on mptable identically */
388 mp_irq.type = MP_INTSRC;
389 mp_irq.irqtype = mp_INT;
390 mp_irq.irqflag = (trigger == ACPI_EDGE_SENSITIVE ? 4 : 0x0c) |
391 (polarity == ACPI_ACTIVE_HIGH ? 1 : 3);
392 mp_irq.srcbus = number;
393 mp_irq.srcbusirq = (((devfn >> 3) & 0x1f) << 2) | ((pin - 1) & 3);
394 ioapic = mp_find_ioapic(gsi);
395 mp_irq.dstapic = mpc_ioapic_id(ioapic);
396 mp_irq.dstirq = mp_find_ioapic_pin(ioapic, gsi);
397
398 mp_save_irq(&mp_irq);
399 #endif
400 return 0;
401 }
402
403 static int mp_register_gsi(struct device *dev, u32 gsi, int trigger,
404 int polarity)
405 {
406 int irq, node;
407
408 if (acpi_irq_model != ACPI_IRQ_MODEL_IOAPIC)
409 return gsi;
410
411 trigger = trigger == ACPI_EDGE_SENSITIVE ? 0 : 1;
412 polarity = polarity == ACPI_ACTIVE_HIGH ? 0 : 1;
413 node = dev ? dev_to_node(dev) : NUMA_NO_NODE;
414 if (mp_set_gsi_attr(gsi, trigger, polarity, node)) {
415 pr_warn("Failed to set pin attr for GSI%d\n", gsi);
416 return -1;
417 }
418
419 irq = mp_map_gsi_to_irq(gsi, IOAPIC_MAP_ALLOC);
420 if (irq < 0)
421 return irq;
422
423 /* Don't set up the ACPI SCI because it's already set up */
424 if (enable_update_mptable && acpi_gbl_FADT.sci_interrupt != gsi)
425 mp_config_acpi_gsi(dev, gsi, trigger, polarity);
426
427 return irq;
428 }
429
430 static void mp_unregister_gsi(u32 gsi)
431 {
432 int irq;
433
434 if (acpi_irq_model != ACPI_IRQ_MODEL_IOAPIC)
435 return;
436
437 irq = mp_map_gsi_to_irq(gsi, 0);
438 if (irq > 0)
439 mp_unmap_irq(irq);
440 }
441
442 static struct irq_domain_ops acpi_irqdomain_ops = {
443 .map = mp_irqdomain_map,
444 .unmap = mp_irqdomain_unmap,
445 };
446
447 static int __init
448 acpi_parse_ioapic(struct acpi_subtable_header * header, const unsigned long end)
449 {
450 struct acpi_madt_io_apic *ioapic = NULL;
451 struct ioapic_domain_cfg cfg = {
452 .type = IOAPIC_DOMAIN_DYNAMIC,
453 .ops = &acpi_irqdomain_ops,
454 };
455
456 ioapic = (struct acpi_madt_io_apic *)header;
457
458 if (BAD_MADT_ENTRY(ioapic, end))
459 return -EINVAL;
460
461 acpi_table_print_madt_entry(header);
462
463 /* Statically assign IRQ numbers for IOAPICs hosting legacy IRQs */
464 if (ioapic->global_irq_base < nr_legacy_irqs())
465 cfg.type = IOAPIC_DOMAIN_LEGACY;
466
467 mp_register_ioapic(ioapic->id, ioapic->address, ioapic->global_irq_base,
468 &cfg);
469
470 return 0;
471 }
472
473 /*
474 * Parse Interrupt Source Override for the ACPI SCI
475 */
476 static void __init acpi_sci_ioapic_setup(u8 bus_irq, u16 polarity, u16 trigger, u32 gsi)
477 {
478 if (trigger == 0) /* compatible SCI trigger is level */
479 trigger = 3;
480
481 if (polarity == 0) /* compatible SCI polarity is low */
482 polarity = 3;
483
484 /* Command-line over-ride via acpi_sci= */
485 if (acpi_sci_flags & ACPI_MADT_TRIGGER_MASK)
486 trigger = (acpi_sci_flags & ACPI_MADT_TRIGGER_MASK) >> 2;
487
488 if (acpi_sci_flags & ACPI_MADT_POLARITY_MASK)
489 polarity = acpi_sci_flags & ACPI_MADT_POLARITY_MASK;
490
491 mp_override_legacy_irq(bus_irq, polarity, trigger, gsi);
492 acpi_penalize_sci_irq(bus_irq, trigger, polarity);
493
494 /*
495 * stash over-ride to indicate we've been here
496 * and for later update of acpi_gbl_FADT
497 */
498 acpi_sci_override_gsi = gsi;
499 return;
500 }
501
502 static int __init
503 acpi_parse_int_src_ovr(struct acpi_subtable_header * header,
504 const unsigned long end)
505 {
506 struct acpi_madt_interrupt_override *intsrc = NULL;
507
508 intsrc = (struct acpi_madt_interrupt_override *)header;
509
510 if (BAD_MADT_ENTRY(intsrc, end))
511 return -EINVAL;
512
513 acpi_table_print_madt_entry(header);
514
515 if (intsrc->source_irq == acpi_gbl_FADT.sci_interrupt) {
516 acpi_sci_ioapic_setup(intsrc->source_irq,
517 intsrc->inti_flags & ACPI_MADT_POLARITY_MASK,
518 (intsrc->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2,
519 intsrc->global_irq);
520 return 0;
521 }
522
523 if (intsrc->source_irq == 0) {
524 if (acpi_skip_timer_override) {
525 printk(PREFIX "BIOS IRQ0 override ignored.\n");
526 return 0;
527 }
528
529 if ((intsrc->global_irq == 2) && acpi_fix_pin2_polarity
530 && (intsrc->inti_flags & ACPI_MADT_POLARITY_MASK)) {
531 intsrc->inti_flags &= ~ACPI_MADT_POLARITY_MASK;
532 printk(PREFIX "BIOS IRQ0 pin2 override: forcing polarity to high active.\n");
533 }
534 }
535
536 mp_override_legacy_irq(intsrc->source_irq,
537 intsrc->inti_flags & ACPI_MADT_POLARITY_MASK,
538 (intsrc->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2,
539 intsrc->global_irq);
540
541 return 0;
542 }
543
544 static int __init
545 acpi_parse_nmi_src(struct acpi_subtable_header * header, const unsigned long end)
546 {
547 struct acpi_madt_nmi_source *nmi_src = NULL;
548
549 nmi_src = (struct acpi_madt_nmi_source *)header;
550
551 if (BAD_MADT_ENTRY(nmi_src, end))
552 return -EINVAL;
553
554 acpi_table_print_madt_entry(header);
555
556 /* TBD: Support nimsrc entries? */
557
558 return 0;
559 }
560
561 #endif /* CONFIG_X86_IO_APIC */
562
563 /*
564 * acpi_pic_sci_set_trigger()
565 *
566 * use ELCR to set PIC-mode trigger type for SCI
567 *
568 * If a PIC-mode SCI is not recognized or gives spurious IRQ7's
569 * it may require Edge Trigger -- use "acpi_sci=edge"
570 *
571 * Port 0x4d0-4d1 are ECLR1 and ECLR2, the Edge/Level Control Registers
572 * for the 8259 PIC. bit[n] = 1 means irq[n] is Level, otherwise Edge.
573 * ECLR1 is IRQs 0-7 (IRQ 0, 1, 2 must be 0)
574 * ECLR2 is IRQs 8-15 (IRQ 8, 13 must be 0)
575 */
576
577 void __init acpi_pic_sci_set_trigger(unsigned int irq, u16 trigger)
578 {
579 unsigned int mask = 1 << irq;
580 unsigned int old, new;
581
582 /* Real old ELCR mask */
583 old = inb(0x4d0) | (inb(0x4d1) << 8);
584
585 /*
586 * If we use ACPI to set PCI IRQs, then we should clear ELCR
587 * since we will set it correctly as we enable the PCI irq
588 * routing.
589 */
590 new = acpi_noirq ? old : 0;
591
592 /*
593 * Update SCI information in the ELCR, it isn't in the PCI
594 * routing tables..
595 */
596 switch (trigger) {
597 case 1: /* Edge - clear */
598 new &= ~mask;
599 break;
600 case 3: /* Level - set */
601 new |= mask;
602 break;
603 }
604
605 if (old == new)
606 return;
607
608 printk(PREFIX "setting ELCR to %04x (from %04x)\n", new, old);
609 outb(new, 0x4d0);
610 outb(new >> 8, 0x4d1);
611 }
612
613 int acpi_gsi_to_irq(u32 gsi, unsigned int *irqp)
614 {
615 int rc, irq, trigger, polarity;
616
617 if (acpi_irq_model == ACPI_IRQ_MODEL_PIC) {
618 *irqp = gsi;
619 return 0;
620 }
621
622 rc = acpi_get_override_irq(gsi, &trigger, &polarity);
623 if (rc == 0) {
624 trigger = trigger ? ACPI_LEVEL_SENSITIVE : ACPI_EDGE_SENSITIVE;
625 polarity = polarity ? ACPI_ACTIVE_LOW : ACPI_ACTIVE_HIGH;
626 irq = acpi_register_gsi(NULL, gsi, trigger, polarity);
627 if (irq >= 0) {
628 *irqp = irq;
629 return 0;
630 }
631 }
632
633 return -1;
634 }
635 EXPORT_SYMBOL_GPL(acpi_gsi_to_irq);
636
637 int acpi_isa_irq_to_gsi(unsigned isa_irq, u32 *gsi)
638 {
639 if (isa_irq < nr_legacy_irqs() &&
640 isa_irq_to_gsi[isa_irq] != ACPI_INVALID_GSI) {
641 *gsi = isa_irq_to_gsi[isa_irq];
642 return 0;
643 }
644
645 return -1;
646 }
647
648 static int acpi_register_gsi_pic(struct device *dev, u32 gsi,
649 int trigger, int polarity)
650 {
651 #ifdef CONFIG_PCI
652 /*
653 * Make sure all (legacy) PCI IRQs are set as level-triggered.
654 */
655 if (trigger == ACPI_LEVEL_SENSITIVE)
656 eisa_set_level_irq(gsi);
657 #endif
658
659 return gsi;
660 }
661
662 #ifdef CONFIG_X86_LOCAL_APIC
663 static int acpi_register_gsi_ioapic(struct device *dev, u32 gsi,
664 int trigger, int polarity)
665 {
666 int irq = gsi;
667
668 #ifdef CONFIG_X86_IO_APIC
669 mutex_lock(&acpi_ioapic_lock);
670 irq = mp_register_gsi(dev, gsi, trigger, polarity);
671 mutex_unlock(&acpi_ioapic_lock);
672 #endif
673
674 return irq;
675 }
676
677 static void acpi_unregister_gsi_ioapic(u32 gsi)
678 {
679 #ifdef CONFIG_X86_IO_APIC
680 mutex_lock(&acpi_ioapic_lock);
681 mp_unregister_gsi(gsi);
682 mutex_unlock(&acpi_ioapic_lock);
683 #endif
684 }
685 #endif
686
687 int (*__acpi_register_gsi)(struct device *dev, u32 gsi,
688 int trigger, int polarity) = acpi_register_gsi_pic;
689 void (*__acpi_unregister_gsi)(u32 gsi) = NULL;
690
691 #ifdef CONFIG_ACPI_SLEEP
692 int (*acpi_suspend_lowlevel)(void) = x86_acpi_suspend_lowlevel;
693 #else
694 int (*acpi_suspend_lowlevel)(void);
695 #endif
696
697 /*
698 * success: return IRQ number (>=0)
699 * failure: return < 0
700 */
701 int acpi_register_gsi(struct device *dev, u32 gsi, int trigger, int polarity)
702 {
703 return __acpi_register_gsi(dev, gsi, trigger, polarity);
704 }
705 EXPORT_SYMBOL_GPL(acpi_register_gsi);
706
707 void acpi_unregister_gsi(u32 gsi)
708 {
709 if (__acpi_unregister_gsi)
710 __acpi_unregister_gsi(gsi);
711 }
712 EXPORT_SYMBOL_GPL(acpi_unregister_gsi);
713
714 #ifdef CONFIG_X86_LOCAL_APIC
715 static void __init acpi_set_irq_model_ioapic(void)
716 {
717 acpi_irq_model = ACPI_IRQ_MODEL_IOAPIC;
718 __acpi_register_gsi = acpi_register_gsi_ioapic;
719 __acpi_unregister_gsi = acpi_unregister_gsi_ioapic;
720 acpi_ioapic = 1;
721 }
722 #endif
723
724 /*
725 * ACPI based hotplug support for CPU
726 */
727 #ifdef CONFIG_ACPI_HOTPLUG_CPU
728 #include <acpi/processor.h>
729
730 static void acpi_map_cpu2node(acpi_handle handle, int cpu, int physid)
731 {
732 #ifdef CONFIG_ACPI_NUMA
733 int nid;
734
735 nid = acpi_get_node(handle);
736 if (nid != -1) {
737 set_apicid_to_node(physid, nid);
738 numa_set_node(cpu, nid);
739 }
740 #endif
741 }
742
743 static int _acpi_map_lsapic(acpi_handle handle, int physid, int *pcpu)
744 {
745 int cpu;
746
747 cpu = acpi_register_lapic(physid, ACPI_MADT_ENABLED);
748 if (cpu < 0) {
749 pr_info(PREFIX "Unable to map lapic to logical cpu number\n");
750 return cpu;
751 }
752
753 acpi_processor_set_pdc(handle);
754 acpi_map_cpu2node(handle, cpu, physid);
755
756 *pcpu = cpu;
757 return 0;
758 }
759
760 /* wrapper to silence section mismatch warning */
761 int __ref acpi_map_cpu(acpi_handle handle, phys_cpuid_t physid, int *pcpu)
762 {
763 return _acpi_map_lsapic(handle, physid, pcpu);
764 }
765 EXPORT_SYMBOL(acpi_map_cpu);
766
767 int acpi_unmap_cpu(int cpu)
768 {
769 #ifdef CONFIG_ACPI_NUMA
770 set_apicid_to_node(per_cpu(x86_cpu_to_apicid, cpu), NUMA_NO_NODE);
771 #endif
772
773 per_cpu(x86_cpu_to_apicid, cpu) = -1;
774 set_cpu_present(cpu, false);
775 num_processors--;
776
777 return (0);
778 }
779 EXPORT_SYMBOL(acpi_unmap_cpu);
780 #endif /* CONFIG_ACPI_HOTPLUG_CPU */
781
782 int acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base)
783 {
784 int ret = -ENOSYS;
785 #ifdef CONFIG_ACPI_HOTPLUG_IOAPIC
786 int ioapic_id;
787 u64 addr;
788 struct ioapic_domain_cfg cfg = {
789 .type = IOAPIC_DOMAIN_DYNAMIC,
790 .ops = &acpi_irqdomain_ops,
791 };
792
793 ioapic_id = acpi_get_ioapic_id(handle, gsi_base, &addr);
794 if (ioapic_id < 0) {
795 unsigned long long uid;
796 acpi_status status;
797
798 status = acpi_evaluate_integer(handle, METHOD_NAME__UID,
799 NULL, &uid);
800 if (ACPI_FAILURE(status)) {
801 acpi_handle_warn(handle, "failed to get IOAPIC ID.\n");
802 return -EINVAL;
803 }
804 ioapic_id = (int)uid;
805 }
806
807 mutex_lock(&acpi_ioapic_lock);
808 ret = mp_register_ioapic(ioapic_id, phys_addr, gsi_base, &cfg);
809 mutex_unlock(&acpi_ioapic_lock);
810 #endif
811
812 return ret;
813 }
814 EXPORT_SYMBOL(acpi_register_ioapic);
815
816 int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base)
817 {
818 int ret = -ENOSYS;
819
820 #ifdef CONFIG_ACPI_HOTPLUG_IOAPIC
821 mutex_lock(&acpi_ioapic_lock);
822 ret = mp_unregister_ioapic(gsi_base);
823 mutex_unlock(&acpi_ioapic_lock);
824 #endif
825
826 return ret;
827 }
828 EXPORT_SYMBOL(acpi_unregister_ioapic);
829
830 /**
831 * acpi_ioapic_registered - Check whether IOAPIC assoicatied with @gsi_base
832 * has been registered
833 * @handle: ACPI handle of the IOAPIC deivce
834 * @gsi_base: GSI base associated with the IOAPIC
835 *
836 * Assume caller holds some type of lock to serialize acpi_ioapic_registered()
837 * with acpi_register_ioapic()/acpi_unregister_ioapic().
838 */
839 int acpi_ioapic_registered(acpi_handle handle, u32 gsi_base)
840 {
841 int ret = 0;
842
843 #ifdef CONFIG_ACPI_HOTPLUG_IOAPIC
844 mutex_lock(&acpi_ioapic_lock);
845 ret = mp_ioapic_registered(gsi_base);
846 mutex_unlock(&acpi_ioapic_lock);
847 #endif
848
849 return ret;
850 }
851
852 static int __init acpi_parse_sbf(struct acpi_table_header *table)
853 {
854 struct acpi_table_boot *sb = (struct acpi_table_boot *)table;
855
856 sbf_port = sb->cmos_index; /* Save CMOS port */
857
858 return 0;
859 }
860
861 #ifdef CONFIG_HPET_TIMER
862 #include <asm/hpet.h>
863
864 static struct resource *hpet_res __initdata;
865
866 static int __init acpi_parse_hpet(struct acpi_table_header *table)
867 {
868 struct acpi_table_hpet *hpet_tbl = (struct acpi_table_hpet *)table;
869
870 if (hpet_tbl->address.space_id != ACPI_SPACE_MEM) {
871 printk(KERN_WARNING PREFIX "HPET timers must be located in "
872 "memory.\n");
873 return -1;
874 }
875
876 hpet_address = hpet_tbl->address.address;
877 hpet_blockid = hpet_tbl->sequence;
878
879 /*
880 * Some broken BIOSes advertise HPET at 0x0. We really do not
881 * want to allocate a resource there.
882 */
883 if (!hpet_address) {
884 printk(KERN_WARNING PREFIX
885 "HPET id: %#x base: %#lx is invalid\n",
886 hpet_tbl->id, hpet_address);
887 return 0;
888 }
889 #ifdef CONFIG_X86_64
890 /*
891 * Some even more broken BIOSes advertise HPET at
892 * 0xfed0000000000000 instead of 0xfed00000. Fix it up and add
893 * some noise:
894 */
895 if (hpet_address == 0xfed0000000000000UL) {
896 if (!hpet_force_user) {
897 printk(KERN_WARNING PREFIX "HPET id: %#x "
898 "base: 0xfed0000000000000 is bogus\n "
899 "try hpet=force on the kernel command line to "
900 "fix it up to 0xfed00000.\n", hpet_tbl->id);
901 hpet_address = 0;
902 return 0;
903 }
904 printk(KERN_WARNING PREFIX
905 "HPET id: %#x base: 0xfed0000000000000 fixed up "
906 "to 0xfed00000.\n", hpet_tbl->id);
907 hpet_address >>= 32;
908 }
909 #endif
910 printk(KERN_INFO PREFIX "HPET id: %#x base: %#lx\n",
911 hpet_tbl->id, hpet_address);
912
913 /*
914 * Allocate and initialize the HPET firmware resource for adding into
915 * the resource tree during the lateinit timeframe.
916 */
917 #define HPET_RESOURCE_NAME_SIZE 9
918 hpet_res = alloc_bootmem(sizeof(*hpet_res) + HPET_RESOURCE_NAME_SIZE);
919
920 hpet_res->name = (void *)&hpet_res[1];
921 hpet_res->flags = IORESOURCE_MEM;
922 snprintf((char *)hpet_res->name, HPET_RESOURCE_NAME_SIZE, "HPET %u",
923 hpet_tbl->sequence);
924
925 hpet_res->start = hpet_address;
926 hpet_res->end = hpet_address + (1 * 1024) - 1;
927
928 return 0;
929 }
930
931 /*
932 * hpet_insert_resource inserts the HPET resources used into the resource
933 * tree.
934 */
935 static __init int hpet_insert_resource(void)
936 {
937 if (!hpet_res)
938 return 1;
939
940 return insert_resource(&iomem_resource, hpet_res);
941 }
942
943 late_initcall(hpet_insert_resource);
944
945 #else
946 #define acpi_parse_hpet NULL
947 #endif
948
949 static int __init acpi_parse_fadt(struct acpi_table_header *table)
950 {
951
952 #ifdef CONFIG_X86_PM_TIMER
953 /* detect the location of the ACPI PM Timer */
954 if (acpi_gbl_FADT.header.revision >= FADT2_REVISION_ID) {
955 /* FADT rev. 2 */
956 if (acpi_gbl_FADT.xpm_timer_block.space_id !=
957 ACPI_ADR_SPACE_SYSTEM_IO)
958 return 0;
959
960 pmtmr_ioport = acpi_gbl_FADT.xpm_timer_block.address;
961 /*
962 * "X" fields are optional extensions to the original V1.0
963 * fields, so we must selectively expand V1.0 fields if the
964 * corresponding X field is zero.
965 */
966 if (!pmtmr_ioport)
967 pmtmr_ioport = acpi_gbl_FADT.pm_timer_block;
968 } else {
969 /* FADT rev. 1 */
970 pmtmr_ioport = acpi_gbl_FADT.pm_timer_block;
971 }
972 if (pmtmr_ioport)
973 printk(KERN_INFO PREFIX "PM-Timer IO Port: %#x\n",
974 pmtmr_ioport);
975 #endif
976 return 0;
977 }
978
979 #ifdef CONFIG_X86_LOCAL_APIC
980 /*
981 * Parse LAPIC entries in MADT
982 * returns 0 on success, < 0 on error
983 */
984
985 static int __init early_acpi_parse_madt_lapic_addr_ovr(void)
986 {
987 int count;
988
989 if (!cpu_has_apic)
990 return -ENODEV;
991
992 /*
993 * Note that the LAPIC address is obtained from the MADT (32-bit value)
994 * and (optionally) overriden by a LAPIC_ADDR_OVR entry (64-bit value).
995 */
996
997 count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE,
998 acpi_parse_lapic_addr_ovr, 0);
999 if (count < 0) {
1000 printk(KERN_ERR PREFIX
1001 "Error parsing LAPIC address override entry\n");
1002 return count;
1003 }
1004
1005 register_lapic_address(acpi_lapic_addr);
1006
1007 return count;
1008 }
1009
1010 static int __init acpi_parse_madt_lapic_entries(void)
1011 {
1012 int count;
1013 int x2count = 0;
1014
1015 if (!cpu_has_apic)
1016 return -ENODEV;
1017
1018 /*
1019 * Note that the LAPIC address is obtained from the MADT (32-bit value)
1020 * and (optionally) overriden by a LAPIC_ADDR_OVR entry (64-bit value).
1021 */
1022
1023 count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE,
1024 acpi_parse_lapic_addr_ovr, 0);
1025 if (count < 0) {
1026 printk(KERN_ERR PREFIX
1027 "Error parsing LAPIC address override entry\n");
1028 return count;
1029 }
1030
1031 register_lapic_address(acpi_lapic_addr);
1032
1033 count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_SAPIC,
1034 acpi_parse_sapic, MAX_LOCAL_APIC);
1035
1036 if (!count) {
1037 x2count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_X2APIC,
1038 acpi_parse_x2apic, MAX_LOCAL_APIC);
1039 count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC,
1040 acpi_parse_lapic, MAX_LOCAL_APIC);
1041 }
1042 if (!count && !x2count) {
1043 printk(KERN_ERR PREFIX "No LAPIC entries present\n");
1044 /* TBD: Cleanup to allow fallback to MPS */
1045 return -ENODEV;
1046 } else if (count < 0 || x2count < 0) {
1047 printk(KERN_ERR PREFIX "Error parsing LAPIC entry\n");
1048 /* TBD: Cleanup to allow fallback to MPS */
1049 return count;
1050 }
1051
1052 x2count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_X2APIC_NMI,
1053 acpi_parse_x2apic_nmi, 0);
1054 count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_NMI,
1055 acpi_parse_lapic_nmi, 0);
1056 if (count < 0 || x2count < 0) {
1057 printk(KERN_ERR PREFIX "Error parsing LAPIC NMI entry\n");
1058 /* TBD: Cleanup to allow fallback to MPS */
1059 return count;
1060 }
1061 return 0;
1062 }
1063 #endif /* CONFIG_X86_LOCAL_APIC */
1064
1065 #ifdef CONFIG_X86_IO_APIC
1066 static void __init mp_config_acpi_legacy_irqs(void)
1067 {
1068 int i;
1069 struct mpc_intsrc mp_irq;
1070
1071 #ifdef CONFIG_EISA
1072 /*
1073 * Fabricate the legacy ISA bus (bus #31).
1074 */
1075 mp_bus_id_to_type[MP_ISA_BUS] = MP_BUS_ISA;
1076 #endif
1077 set_bit(MP_ISA_BUS, mp_bus_not_pci);
1078 pr_debug("Bus #%d is ISA\n", MP_ISA_BUS);
1079
1080 /*
1081 * Use the default configuration for the IRQs 0-15. Unless
1082 * overridden by (MADT) interrupt source override entries.
1083 */
1084 for (i = 0; i < nr_legacy_irqs(); i++) {
1085 int ioapic, pin;
1086 unsigned int dstapic;
1087 int idx;
1088 u32 gsi;
1089
1090 /* Locate the gsi that irq i maps to. */
1091 if (acpi_isa_irq_to_gsi(i, &gsi))
1092 continue;
1093
1094 /*
1095 * Locate the IOAPIC that manages the ISA IRQ.
1096 */
1097 ioapic = mp_find_ioapic(gsi);
1098 if (ioapic < 0)
1099 continue;
1100 pin = mp_find_ioapic_pin(ioapic, gsi);
1101 dstapic = mpc_ioapic_id(ioapic);
1102
1103 for (idx = 0; idx < mp_irq_entries; idx++) {
1104 struct mpc_intsrc *irq = mp_irqs + idx;
1105
1106 /* Do we already have a mapping for this ISA IRQ? */
1107 if (irq->srcbus == MP_ISA_BUS && irq->srcbusirq == i)
1108 break;
1109
1110 /* Do we already have a mapping for this IOAPIC pin */
1111 if (irq->dstapic == dstapic && irq->dstirq == pin)
1112 break;
1113 }
1114
1115 if (idx != mp_irq_entries) {
1116 printk(KERN_DEBUG "ACPI: IRQ%d used by override.\n", i);
1117 continue; /* IRQ already used */
1118 }
1119
1120 mp_irq.type = MP_INTSRC;
1121 mp_irq.irqflag = 0; /* Conforming */
1122 mp_irq.srcbus = MP_ISA_BUS;
1123 mp_irq.dstapic = dstapic;
1124 mp_irq.irqtype = mp_INT;
1125 mp_irq.srcbusirq = i; /* Identity mapped */
1126 mp_irq.dstirq = pin;
1127
1128 mp_save_irq(&mp_irq);
1129 }
1130 }
1131
1132 /*
1133 * Parse IOAPIC related entries in MADT
1134 * returns 0 on success, < 0 on error
1135 */
1136 static int __init acpi_parse_madt_ioapic_entries(void)
1137 {
1138 int count;
1139
1140 /*
1141 * ACPI interpreter is required to complete interrupt setup,
1142 * so if it is off, don't enumerate the io-apics with ACPI.
1143 * If MPS is present, it will handle them,
1144 * otherwise the system will stay in PIC mode
1145 */
1146 if (acpi_disabled || acpi_noirq)
1147 return -ENODEV;
1148
1149 if (!cpu_has_apic)
1150 return -ENODEV;
1151
1152 /*
1153 * if "noapic" boot option, don't look for IO-APICs
1154 */
1155 if (skip_ioapic_setup) {
1156 printk(KERN_INFO PREFIX "Skipping IOAPIC probe "
1157 "due to 'noapic' option.\n");
1158 return -ENODEV;
1159 }
1160
1161 count = acpi_table_parse_madt(ACPI_MADT_TYPE_IO_APIC, acpi_parse_ioapic,
1162 MAX_IO_APICS);
1163 if (!count) {
1164 printk(KERN_ERR PREFIX "No IOAPIC entries present\n");
1165 return -ENODEV;
1166 } else if (count < 0) {
1167 printk(KERN_ERR PREFIX "Error parsing IOAPIC entry\n");
1168 return count;
1169 }
1170
1171 count = acpi_table_parse_madt(ACPI_MADT_TYPE_INTERRUPT_OVERRIDE,
1172 acpi_parse_int_src_ovr, nr_irqs);
1173 if (count < 0) {
1174 printk(KERN_ERR PREFIX
1175 "Error parsing interrupt source overrides entry\n");
1176 /* TBD: Cleanup to allow fallback to MPS */
1177 return count;
1178 }
1179
1180 /*
1181 * If BIOS did not supply an INT_SRC_OVR for the SCI
1182 * pretend we got one so we can set the SCI flags.
1183 */
1184 if (!acpi_sci_override_gsi)
1185 acpi_sci_ioapic_setup(acpi_gbl_FADT.sci_interrupt, 0, 0,
1186 acpi_gbl_FADT.sci_interrupt);
1187
1188 /* Fill in identity legacy mappings where no override */
1189 mp_config_acpi_legacy_irqs();
1190
1191 count = acpi_table_parse_madt(ACPI_MADT_TYPE_NMI_SOURCE,
1192 acpi_parse_nmi_src, nr_irqs);
1193 if (count < 0) {
1194 printk(KERN_ERR PREFIX "Error parsing NMI SRC entry\n");
1195 /* TBD: Cleanup to allow fallback to MPS */
1196 return count;
1197 }
1198
1199 return 0;
1200 }
1201 #else
1202 static inline int acpi_parse_madt_ioapic_entries(void)
1203 {
1204 return -1;
1205 }
1206 #endif /* !CONFIG_X86_IO_APIC */
1207
1208 static void __init early_acpi_process_madt(void)
1209 {
1210 #ifdef CONFIG_X86_LOCAL_APIC
1211 int error;
1212
1213 if (!acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) {
1214
1215 /*
1216 * Parse MADT LAPIC entries
1217 */
1218 error = early_acpi_parse_madt_lapic_addr_ovr();
1219 if (!error) {
1220 acpi_lapic = 1;
1221 smp_found_config = 1;
1222 }
1223 if (error == -EINVAL) {
1224 /*
1225 * Dell Precision Workstation 410, 610 come here.
1226 */
1227 printk(KERN_ERR PREFIX
1228 "Invalid BIOS MADT, disabling ACPI\n");
1229 disable_acpi();
1230 }
1231 }
1232 #endif
1233 }
1234
1235 static void __init acpi_process_madt(void)
1236 {
1237 #ifdef CONFIG_X86_LOCAL_APIC
1238 int error;
1239
1240 if (!acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) {
1241
1242 /*
1243 * Parse MADT LAPIC entries
1244 */
1245 error = acpi_parse_madt_lapic_entries();
1246 if (!error) {
1247 acpi_lapic = 1;
1248
1249 /*
1250 * Parse MADT IO-APIC entries
1251 */
1252 mutex_lock(&acpi_ioapic_lock);
1253 error = acpi_parse_madt_ioapic_entries();
1254 mutex_unlock(&acpi_ioapic_lock);
1255 if (!error) {
1256 acpi_set_irq_model_ioapic();
1257
1258 smp_found_config = 1;
1259 }
1260 }
1261 if (error == -EINVAL) {
1262 /*
1263 * Dell Precision Workstation 410, 610 come here.
1264 */
1265 printk(KERN_ERR PREFIX
1266 "Invalid BIOS MADT, disabling ACPI\n");
1267 disable_acpi();
1268 }
1269 } else {
1270 /*
1271 * ACPI found no MADT, and so ACPI wants UP PIC mode.
1272 * In the event an MPS table was found, forget it.
1273 * Boot with "acpi=off" to use MPS on such a system.
1274 */
1275 if (smp_found_config) {
1276 printk(KERN_WARNING PREFIX
1277 "No APIC-table, disabling MPS\n");
1278 smp_found_config = 0;
1279 }
1280 }
1281
1282 /*
1283 * ACPI supports both logical (e.g. Hyper-Threading) and physical
1284 * processors, where MPS only supports physical.
1285 */
1286 if (acpi_lapic && acpi_ioapic)
1287 printk(KERN_INFO "Using ACPI (MADT) for SMP configuration "
1288 "information\n");
1289 else if (acpi_lapic)
1290 printk(KERN_INFO "Using ACPI for processor (LAPIC) "
1291 "configuration information\n");
1292 #endif
1293 return;
1294 }
1295
1296 static int __init disable_acpi_irq(const struct dmi_system_id *d)
1297 {
1298 if (!acpi_force) {
1299 printk(KERN_NOTICE "%s detected: force use of acpi=noirq\n",
1300 d->ident);
1301 acpi_noirq_set();
1302 }
1303 return 0;
1304 }
1305
1306 static int __init disable_acpi_pci(const struct dmi_system_id *d)
1307 {
1308 if (!acpi_force) {
1309 printk(KERN_NOTICE "%s detected: force use of pci=noacpi\n",
1310 d->ident);
1311 acpi_disable_pci();
1312 }
1313 return 0;
1314 }
1315
1316 static int __init dmi_disable_acpi(const struct dmi_system_id *d)
1317 {
1318 if (!acpi_force) {
1319 printk(KERN_NOTICE "%s detected: acpi off\n", d->ident);
1320 disable_acpi();
1321 } else {
1322 printk(KERN_NOTICE
1323 "Warning: DMI blacklist says broken, but acpi forced\n");
1324 }
1325 return 0;
1326 }
1327
1328 /*
1329 * Force ignoring BIOS IRQ0 override
1330 */
1331 static int __init dmi_ignore_irq0_timer_override(const struct dmi_system_id *d)
1332 {
1333 if (!acpi_skip_timer_override) {
1334 pr_notice("%s detected: Ignoring BIOS IRQ0 override\n",
1335 d->ident);
1336 acpi_skip_timer_override = 1;
1337 }
1338 return 0;
1339 }
1340
1341 /*
1342 * ACPI offers an alternative platform interface model that removes
1343 * ACPI hardware requirements for platforms that do not implement
1344 * the PC Architecture.
1345 *
1346 * We initialize the Hardware-reduced ACPI model here:
1347 */
1348 static void __init acpi_reduced_hw_init(void)
1349 {
1350 if (acpi_gbl_reduced_hardware) {
1351 /*
1352 * Override x86_init functions and bypass legacy pic
1353 * in Hardware-reduced ACPI mode
1354 */
1355 x86_init.timers.timer_init = x86_init_noop;
1356 x86_init.irqs.pre_vector_init = x86_init_noop;
1357 legacy_pic = &null_legacy_pic;
1358 }
1359 }
1360
1361 /*
1362 * If your system is blacklisted here, but you find that acpi=force
1363 * works for you, please contact linux-acpi@vger.kernel.org
1364 */
1365 static struct dmi_system_id __initdata acpi_dmi_table[] = {
1366 /*
1367 * Boxes that need ACPI disabled
1368 */
1369 {
1370 .callback = dmi_disable_acpi,
1371 .ident = "IBM Thinkpad",
1372 .matches = {
1373 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
1374 DMI_MATCH(DMI_BOARD_NAME, "2629H1G"),
1375 },
1376 },
1377
1378 /*
1379 * Boxes that need ACPI PCI IRQ routing disabled
1380 */
1381 {
1382 .callback = disable_acpi_irq,
1383 .ident = "ASUS A7V",
1384 .matches = {
1385 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC"),
1386 DMI_MATCH(DMI_BOARD_NAME, "<A7V>"),
1387 /* newer BIOS, Revision 1011, does work */
1388 DMI_MATCH(DMI_BIOS_VERSION,
1389 "ASUS A7V ACPI BIOS Revision 1007"),
1390 },
1391 },
1392 {
1393 /*
1394 * Latest BIOS for IBM 600E (1.16) has bad pcinum
1395 * for LPC bridge, which is needed for the PCI
1396 * interrupt links to work. DSDT fix is in bug 5966.
1397 * 2645, 2646 model numbers are shared with 600/600E/600X
1398 */
1399 .callback = disable_acpi_irq,
1400 .ident = "IBM Thinkpad 600 Series 2645",
1401 .matches = {
1402 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
1403 DMI_MATCH(DMI_BOARD_NAME, "2645"),
1404 },
1405 },
1406 {
1407 .callback = disable_acpi_irq,
1408 .ident = "IBM Thinkpad 600 Series 2646",
1409 .matches = {
1410 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
1411 DMI_MATCH(DMI_BOARD_NAME, "2646"),
1412 },
1413 },
1414 /*
1415 * Boxes that need ACPI PCI IRQ routing and PCI scan disabled
1416 */
1417 { /* _BBN 0 bug */
1418 .callback = disable_acpi_pci,
1419 .ident = "ASUS PR-DLS",
1420 .matches = {
1421 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."),
1422 DMI_MATCH(DMI_BOARD_NAME, "PR-DLS"),
1423 DMI_MATCH(DMI_BIOS_VERSION,
1424 "ASUS PR-DLS ACPI BIOS Revision 1010"),
1425 DMI_MATCH(DMI_BIOS_DATE, "03/21/2003")
1426 },
1427 },
1428 {
1429 .callback = disable_acpi_pci,
1430 .ident = "Acer TravelMate 36x Laptop",
1431 .matches = {
1432 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
1433 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 360"),
1434 },
1435 },
1436 {}
1437 };
1438
1439 /* second table for DMI checks that should run after early-quirks */
1440 static struct dmi_system_id __initdata acpi_dmi_table_late[] = {
1441 /*
1442 * HP laptops which use a DSDT reporting as HP/SB400/10000,
1443 * which includes some code which overrides all temperature
1444 * trip points to 16C if the INTIN2 input of the I/O APIC
1445 * is enabled. This input is incorrectly designated the
1446 * ISA IRQ 0 via an interrupt source override even though
1447 * it is wired to the output of the master 8259A and INTIN0
1448 * is not connected at all. Force ignoring BIOS IRQ0
1449 * override in that cases.
1450 */
1451 {
1452 .callback = dmi_ignore_irq0_timer_override,
1453 .ident = "HP nx6115 laptop",
1454 .matches = {
1455 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1456 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6115"),
1457 },
1458 },
1459 {
1460 .callback = dmi_ignore_irq0_timer_override,
1461 .ident = "HP NX6125 laptop",
1462 .matches = {
1463 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1464 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6125"),
1465 },
1466 },
1467 {
1468 .callback = dmi_ignore_irq0_timer_override,
1469 .ident = "HP NX6325 laptop",
1470 .matches = {
1471 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1472 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6325"),
1473 },
1474 },
1475 {
1476 .callback = dmi_ignore_irq0_timer_override,
1477 .ident = "HP 6715b laptop",
1478 .matches = {
1479 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1480 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq 6715b"),
1481 },
1482 },
1483 {
1484 .callback = dmi_ignore_irq0_timer_override,
1485 .ident = "FUJITSU SIEMENS",
1486 .matches = {
1487 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
1488 DMI_MATCH(DMI_PRODUCT_NAME, "AMILO PRO V2030"),
1489 },
1490 },
1491 {}
1492 };
1493
1494 /*
1495 * acpi_boot_table_init() and acpi_boot_init()
1496 * called from setup_arch(), always.
1497 * 1. checksums all tables
1498 * 2. enumerates lapics
1499 * 3. enumerates io-apics
1500 *
1501 * acpi_table_init() is separate to allow reading SRAT without
1502 * other side effects.
1503 *
1504 * side effects of acpi_boot_init:
1505 * acpi_lapic = 1 if LAPIC found
1506 * acpi_ioapic = 1 if IOAPIC found
1507 * if (acpi_lapic && acpi_ioapic) smp_found_config = 1;
1508 * if acpi_blacklisted() acpi_disabled = 1;
1509 * acpi_irq_model=...
1510 * ...
1511 */
1512
1513 void __init acpi_boot_table_init(void)
1514 {
1515 dmi_check_system(acpi_dmi_table);
1516
1517 /*
1518 * If acpi_disabled, bail out
1519 */
1520 if (acpi_disabled)
1521 return;
1522
1523 /*
1524 * Initialize the ACPI boot-time table parser.
1525 */
1526 if (acpi_table_init()) {
1527 disable_acpi();
1528 return;
1529 }
1530
1531 acpi_table_parse(ACPI_SIG_BOOT, acpi_parse_sbf);
1532
1533 /*
1534 * blacklist may disable ACPI entirely
1535 */
1536 if (acpi_blacklisted()) {
1537 if (acpi_force) {
1538 printk(KERN_WARNING PREFIX "acpi=force override\n");
1539 } else {
1540 printk(KERN_WARNING PREFIX "Disabling ACPI support\n");
1541 disable_acpi();
1542 return;
1543 }
1544 }
1545 }
1546
1547 int __init early_acpi_boot_init(void)
1548 {
1549 /*
1550 * If acpi_disabled, bail out
1551 */
1552 if (acpi_disabled)
1553 return 1;
1554
1555 /*
1556 * Process the Multiple APIC Description Table (MADT), if present
1557 */
1558 early_acpi_process_madt();
1559
1560 /*
1561 * Hardware-reduced ACPI mode initialization:
1562 */
1563 acpi_reduced_hw_init();
1564
1565 return 0;
1566 }
1567
1568 int __init acpi_boot_init(void)
1569 {
1570 /* those are executed after early-quirks are executed */
1571 dmi_check_system(acpi_dmi_table_late);
1572
1573 /*
1574 * If acpi_disabled, bail out
1575 */
1576 if (acpi_disabled)
1577 return 1;
1578
1579 acpi_table_parse(ACPI_SIG_BOOT, acpi_parse_sbf);
1580
1581 /*
1582 * set sci_int and PM timer address
1583 */
1584 acpi_table_parse(ACPI_SIG_FADT, acpi_parse_fadt);
1585
1586 /*
1587 * Process the Multiple APIC Description Table (MADT), if present
1588 */
1589 acpi_process_madt();
1590
1591 acpi_table_parse(ACPI_SIG_HPET, acpi_parse_hpet);
1592
1593 if (!acpi_noirq)
1594 x86_init.pci.init = pci_acpi_init;
1595
1596 return 0;
1597 }
1598
1599 static int __init parse_acpi(char *arg)
1600 {
1601 if (!arg)
1602 return -EINVAL;
1603
1604 /* "acpi=off" disables both ACPI table parsing and interpreter */
1605 if (strcmp(arg, "off") == 0) {
1606 disable_acpi();
1607 }
1608 /* acpi=force to over-ride black-list */
1609 else if (strcmp(arg, "force") == 0) {
1610 acpi_force = 1;
1611 acpi_disabled = 0;
1612 }
1613 /* acpi=strict disables out-of-spec workarounds */
1614 else if (strcmp(arg, "strict") == 0) {
1615 acpi_strict = 1;
1616 }
1617 /* acpi=rsdt use RSDT instead of XSDT */
1618 else if (strcmp(arg, "rsdt") == 0) {
1619 acpi_gbl_do_not_use_xsdt = TRUE;
1620 }
1621 /* "acpi=noirq" disables ACPI interrupt routing */
1622 else if (strcmp(arg, "noirq") == 0) {
1623 acpi_noirq_set();
1624 }
1625 /* "acpi=copy_dsdt" copys DSDT */
1626 else if (strcmp(arg, "copy_dsdt") == 0) {
1627 acpi_gbl_copy_dsdt_locally = 1;
1628 }
1629 /* "acpi=nocmcff" disables FF mode for corrected errors */
1630 else if (strcmp(arg, "nocmcff") == 0) {
1631 acpi_disable_cmcff = 1;
1632 } else {
1633 /* Core will printk when we return error. */
1634 return -EINVAL;
1635 }
1636 return 0;
1637 }
1638 early_param("acpi", parse_acpi);
1639
1640 /* FIXME: Using pci= for an ACPI parameter is a travesty. */
1641 static int __init parse_pci(char *arg)
1642 {
1643 if (arg && strcmp(arg, "noacpi") == 0)
1644 acpi_disable_pci();
1645 return 0;
1646 }
1647 early_param("pci", parse_pci);
1648
1649 int __init acpi_mps_check(void)
1650 {
1651 #if defined(CONFIG_X86_LOCAL_APIC) && !defined(CONFIG_X86_MPPARSE)
1652 /* mptable code is not built-in*/
1653 if (acpi_disabled || acpi_noirq) {
1654 printk(KERN_WARNING "MPS support code is not built-in.\n"
1655 "Using acpi=off or acpi=noirq or pci=noacpi "
1656 "may have problem\n");
1657 return 1;
1658 }
1659 #endif
1660 return 0;
1661 }
1662
1663 #ifdef CONFIG_X86_IO_APIC
1664 static int __init parse_acpi_skip_timer_override(char *arg)
1665 {
1666 acpi_skip_timer_override = 1;
1667 return 0;
1668 }
1669 early_param("acpi_skip_timer_override", parse_acpi_skip_timer_override);
1670
1671 static int __init parse_acpi_use_timer_override(char *arg)
1672 {
1673 acpi_use_timer_override = 1;
1674 return 0;
1675 }
1676 early_param("acpi_use_timer_override", parse_acpi_use_timer_override);
1677 #endif /* CONFIG_X86_IO_APIC */
1678
1679 static int __init setup_acpi_sci(char *s)
1680 {
1681 if (!s)
1682 return -EINVAL;
1683 if (!strcmp(s, "edge"))
1684 acpi_sci_flags = ACPI_MADT_TRIGGER_EDGE |
1685 (acpi_sci_flags & ~ACPI_MADT_TRIGGER_MASK);
1686 else if (!strcmp(s, "level"))
1687 acpi_sci_flags = ACPI_MADT_TRIGGER_LEVEL |
1688 (acpi_sci_flags & ~ACPI_MADT_TRIGGER_MASK);
1689 else if (!strcmp(s, "high"))
1690 acpi_sci_flags = ACPI_MADT_POLARITY_ACTIVE_HIGH |
1691 (acpi_sci_flags & ~ACPI_MADT_POLARITY_MASK);
1692 else if (!strcmp(s, "low"))
1693 acpi_sci_flags = ACPI_MADT_POLARITY_ACTIVE_LOW |
1694 (acpi_sci_flags & ~ACPI_MADT_POLARITY_MASK);
1695 else
1696 return -EINVAL;
1697 return 0;
1698 }
1699 early_param("acpi_sci", setup_acpi_sci);
1700
1701 int __acpi_acquire_global_lock(unsigned int *lock)
1702 {
1703 unsigned int old, new, val;
1704 do {
1705 old = *lock;
1706 new = (((old & ~0x3) + 2) + ((old >> 1) & 0x1));
1707 val = cmpxchg(lock, old, new);
1708 } while (unlikely (val != old));
1709 return (new < 3) ? -1 : 0;
1710 }
1711
1712 int __acpi_release_global_lock(unsigned int *lock)
1713 {
1714 unsigned int old, new, val;
1715 do {
1716 old = *lock;
1717 new = old & ~0x3;
1718 val = cmpxchg(lock, old, new);
1719 } while (unlikely (val != old));
1720 return old & 0x1;
1721 }
1722
1723 void __init arch_reserve_mem_area(acpi_physical_address addr, size_t size)
1724 {
1725 e820_add_region(addr, size, E820_ACPI);
1726 update_e820();
1727 }
Linux with added FPC-III support